WifiStateMachine.java revision 398823d45a240ff90ff2ffab3ff4a8b8646f24c9
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.WifiSsid; 77import android.net.wifi.WpsInfo; 78import android.net.wifi.WpsResult; 79import android.net.wifi.WpsResult.Status; 80import android.net.wifi.p2p.IWifiP2pManager; 81import android.os.BatteryStats; 82import android.os.Bundle; 83import android.os.IBinder; 84import android.os.INetworkManagementService; 85import android.os.Looper; 86import android.os.Message; 87import android.os.Messenger; 88import android.os.PowerManager; 89import android.os.Process; 90import android.os.RemoteException; 91import android.os.ServiceManager; 92import android.os.SystemClock; 93import android.os.SystemProperties; 94import android.os.UserHandle; 95import android.os.WorkSource; 96import android.provider.Settings; 97import android.telephony.TelephonyManager; 98import android.text.TextUtils; 99import android.util.Log; 100import android.util.LruCache; 101 102import com.android.internal.R; 103import com.android.internal.app.IBatteryStats; 104import com.android.internal.util.AsyncChannel; 105import com.android.internal.util.Protocol; 106import com.android.internal.util.State; 107import com.android.internal.util.StateMachine; 108import com.android.server.net.NetlinkTracker; 109import com.android.server.wifi.hotspot2.NetworkDetail; 110import com.android.server.wifi.hotspot2.SupplicantBridge; 111import com.android.server.wifi.p2p.WifiP2pServiceImpl; 112 113import java.io.BufferedReader; 114import java.io.FileDescriptor; 115import java.io.FileNotFoundException; 116import java.io.FileReader; 117import java.io.IOException; 118import java.io.PrintWriter; 119import java.net.Inet4Address; 120import java.net.InetAddress; 121import java.net.SocketException; 122import java.util.ArrayList; 123import java.util.Calendar; 124import java.util.HashSet; 125import java.util.LinkedList; 126import java.util.List; 127import java.util.Locale; 128import java.util.Queue; 129import java.util.Random; 130import java.util.concurrent.atomic.AtomicBoolean; 131import java.util.concurrent.atomic.AtomicInteger; 132import java.util.regex.Matcher; 133import java.util.regex.Pattern; 134 135/** 136 * Track the state of Wifi connectivity. All event handling is done here, 137 * and all changes in connectivity state are initiated here. 138 * 139 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 140 * In the current implementation, we support concurrent wifi p2p and wifi operation. 141 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 142 * handles p2p operation. 143 * 144 * @hide 145 */ 146public class WifiStateMachine extends StateMachine { 147 148 private static final String NETWORKTYPE = "WIFI"; 149 private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT"; 150 private static boolean DBG = false; 151 private static boolean VDBG = false; 152 private static boolean VVDBG = false; 153 private static boolean mLogMessages = false; 154 private static final String TAG = "WifiStateMachine"; 155 156 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 157 158 private static final String GOOGLE_OUI = "DA-A1-19"; 159 160 /* temporary debug flag - best network selection development */ 161 private static boolean PDBG = false; 162 163 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 164 * the corresponding BSSID. 165 */ 166 private boolean didBlackListBSSID = false; 167 168 /** 169 * Log with error attribute 170 * 171 * @param s is string log 172 */ 173 protected void loge(String s) { 174 Log.e(getName(), s); 175 } 176 protected void log(String s) {; 177 Log.e(getName(), s); 178 } 179 180 private WifiMonitor mWifiMonitor; 181 private WifiNative mWifiNative; 182 private WifiConfigStore mWifiConfigStore; 183 private WifiAutoJoinController mWifiAutoJoinController; 184 private INetworkManagementService mNwService; 185 private ConnectivityManager mCm; 186 187 private final boolean mP2pSupported; 188 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 189 private boolean mTemporarilyDisconnectWifi = false; 190 private final String mPrimaryDeviceType; 191 192 /* Scan results handling */ 193 private List<ScanDetail> mScanResults = new ArrayList<>(); 194 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 195 private static final int SCAN_RESULT_CACHE_SIZE = 160; 196 private final LruCache<NetworkDetail, ScanDetail> mScanResultCache; 197 // For debug, number of known scan results that were found as part of last scan result event, 198 // as well the number of scans results returned by the supplicant with that message 199 private int mNumScanResultsKnown; 200 private int mNumScanResultsReturned; 201 202 /* Batch scan results */ 203 private final List<BatchedScanResult> mBatchedScanResults = 204 new ArrayList<BatchedScanResult>(); 205 private int mBatchedScanOwnerUid = UNKNOWN_SCAN_SOURCE; 206 private int mExpectedBatchedScans = 0; 207 private long mBatchedScanMinPollTime = 0; 208 209 private boolean mScreenOn = false; 210 211 /* Chipset supports background scan */ 212 private final boolean mBackgroundScanSupported; 213 214 private String mInterfaceName; 215 /* Tethering interface could be separate from wlan interface */ 216 private String mTetherInterfaceName; 217 218 private int mLastSignalLevel = -1; 219 private String mLastBssid; 220 private int mLastNetworkId; // The network Id we successfully joined 221 private boolean linkDebouncing = false; 222 223 // Testing various network disconnect cases by sending lots of spurious 224 // disconnect to supplicant 225 private boolean testNetworkDisconnect = false; 226 227 private boolean mEnableRssiPolling = false; 228 private boolean mEnableBackgroundScan = false; 229 private int mRssiPollToken = 0; 230 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 231 * In CONNECT_MODE, the STA can scan and connect to an access point 232 * In SCAN_ONLY_MODE, the STA can only scan for access points 233 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 234 */ 235 private int mOperationalMode = CONNECT_MODE; 236 private boolean mIsScanOngoing = false; 237 private boolean mIsFullScanOngoing = false; 238 private boolean mSendScanResultsBroadcast = false; 239 240 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 241 private WorkSource mScanWorkSource = null; 242 private static final int UNKNOWN_SCAN_SOURCE = -1; 243 private static final int SCAN_ALARM_SOURCE = -2; 244 private static final int ADD_OR_UPDATE_SOURCE = -3; 245 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 246 private static final int ENABLE_WIFI = -5; 247 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 248 249 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 250 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 251 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 252 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 253 254 private static final String BATCHED_SETTING = "batched_settings"; 255 private static final String BATCHED_WORKSOURCE = "batched_worksource"; 256 257 /* Tracks if state machine has received any screen state change broadcast yet. 258 * We can miss one of these at boot. 259 */ 260 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 261 262 private boolean mBluetoothConnectionActive = false; 263 264 private PowerManager.WakeLock mSuspendWakeLock; 265 266 /** 267 * Interval in milliseconds between polling for RSSI 268 * and linkspeed information 269 */ 270 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 271 272 /** 273 * Interval in milliseconds between receiving a disconnect event 274 * while connected to a good AP, and handling the disconnect proper 275 */ 276 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 277 278 /** 279 * Delay between supplicant restarts upon failure to establish connection 280 */ 281 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 282 283 /** 284 * Number of times we attempt to restart supplicant 285 */ 286 private static final int SUPPLICANT_RESTART_TRIES = 5; 287 288 private int mSupplicantRestartCount = 0; 289 /* Tracks sequence number on stop failure message */ 290 private int mSupplicantStopFailureToken = 0; 291 292 /** 293 * Tether state change notification time out 294 */ 295 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 296 297 /* Tracks sequence number on a tether notification time out */ 298 private int mTetherToken = 0; 299 300 /** 301 * Driver start time out. 302 */ 303 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 304 305 /* Tracks sequence number on a driver time out */ 306 private int mDriverStartToken = 0; 307 308 /** 309 * The link properties of the wifi interface. 310 * Do not modify this directly; use updateLinkProperties instead. 311 */ 312 private LinkProperties mLinkProperties; 313 314 /* Tracks sequence number on a periodic scan message */ 315 private int mPeriodicScanToken = 0; 316 317 // Wakelock held during wifi start/stop and driver load/unload 318 private PowerManager.WakeLock mWakeLock; 319 320 private Context mContext; 321 322 private final Object mDhcpResultsLock = new Object(); 323 private DhcpResults mDhcpResults; 324 private WifiInfo mWifiInfo; 325 private NetworkInfo mNetworkInfo; 326 private NetworkCapabilities mNetworkCapabilities; 327 private SupplicantStateTracker mSupplicantStateTracker; 328 private BaseDhcpStateMachine mDhcpStateMachine; 329 private boolean mDhcpActive = false; 330 331 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 332 333 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 334 335 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 336 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 337 338 // Roaming failure count 339 private int mRoamFailCount = 0; 340 341 // This is the BSSID we are trying to associate to, it can be set to "any" 342 // if we havent selected a BSSID for joining. 343 // if we havent selected a BSSID for joining. 344 // The BSSID we are associated to is found in mWifiInfo 345 private String mTargetRoamBSSID = "any"; 346 347 private long mLastDriverRoamAttempt = 0; 348 349 private WifiConfiguration targetWificonfiguration = null; 350 351 // Used as debug to indicate which configuration last was saved 352 private WifiConfiguration lastSavedConfigurationAttempt = null; 353 354 // Used as debug to indicate which configuration last was removed 355 private WifiConfiguration lastForgetConfigurationAttempt = null; 356 357 //Random used by softAP channel Selection 358 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 359 boolean isRoaming() { 360 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 361 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 362 } 363 364 public void autoRoamSetBSSID(int netId, String bssid) { 365 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 366 } 367 368 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 369 boolean ret = true; 370 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 371 if (bssid == null) bssid = "any"; 372 if (config == null) return false; // Nothing to do 373 374 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 375 return false; // We didnt change anything 376 } 377 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 378 // Changing to ANY 379 if (!mWifiConfigStore.roamOnAny) { 380 ret = false; // Nothing to do 381 } 382 } 383 if (VDBG) { 384 loge("autoRoamSetBSSID " + bssid 385 + " key=" + config.configKey()); 386 } 387 config.autoJoinBSSID = bssid; 388 mTargetRoamBSSID = bssid; 389 mWifiConfigStore.saveWifiConfigBSSID(config); 390 return ret; 391 } 392 393 /** 394 * Subset of link properties coming from netlink. 395 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 396 * and domains obtained from router advertisements (RFC 6106). 397 */ 398 private NetlinkTracker mNetlinkTracker; 399 400 private AlarmManager mAlarmManager; 401 private PendingIntent mScanIntent; 402 private PendingIntent mDriverStopIntent; 403 private PendingIntent mBatchedScanIntervalIntent; 404 405 /* Tracks current frequency mode */ 406 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 407 408 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 409 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 410 411 // Channel for sending replies. 412 private AsyncChannel mReplyChannel = new AsyncChannel(); 413 414 private WifiP2pServiceImpl mWifiP2pServiceImpl; 415 416 // Used to initiate a connection with WifiP2pService 417 private AsyncChannel mWifiP2pChannel; 418 private AsyncChannel mWifiApConfigChannel; 419 420 private int mConnectionRequests = 0; 421 private WifiNetworkFactory mNetworkFactory; 422 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 423 private WifiNetworkAgent mNetworkAgent; 424 425 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 426 // We should really persist that into the networkHistory.txt file, and read it back when 427 // WifiStateMachine starts up 428 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 429 430 // Used to filter out requests we couldn't possibly satisfy. 431 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 432 433 /* The base for wifi message types */ 434 static final int BASE = Protocol.BASE_WIFI; 435 /* Start the supplicant */ 436 static final int CMD_START_SUPPLICANT = BASE + 11; 437 /* Stop the supplicant */ 438 static final int CMD_STOP_SUPPLICANT = BASE + 12; 439 /* Start the driver */ 440 static final int CMD_START_DRIVER = BASE + 13; 441 /* Stop the driver */ 442 static final int CMD_STOP_DRIVER = BASE + 14; 443 /* Indicates Static IP succeeded */ 444 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 445 /* Indicates Static IP failed */ 446 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 447 /* Indicates supplicant stop failed */ 448 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 449 /* Delayed stop to avoid shutting down driver too quick*/ 450 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 451 /* A delayed message sent to start driver when it fail to come up */ 452 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 453 454 /* Start the soft access point */ 455 static final int CMD_START_AP = BASE + 21; 456 /* Indicates soft ap start succeeded */ 457 static final int CMD_START_AP_SUCCESS = BASE + 22; 458 /* Indicates soft ap start failed */ 459 static final int CMD_START_AP_FAILURE = BASE + 23; 460 /* Stop the soft access point */ 461 static final int CMD_STOP_AP = BASE + 24; 462 /* Set the soft access point configuration */ 463 static final int CMD_SET_AP_CONFIG = BASE + 25; 464 /* Soft access point configuration set completed */ 465 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 466 /* Request the soft access point configuration */ 467 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 468 /* Response to access point configuration request */ 469 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 470 /* Invoked when getting a tether state change notification */ 471 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 472 /* A delayed message sent to indicate tether state change failed to arrive */ 473 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 474 475 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 476 477 /* Supplicant commands */ 478 /* Is supplicant alive ? */ 479 static final int CMD_PING_SUPPLICANT = BASE + 51; 480 /* Add/update a network configuration */ 481 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 482 /* Delete a network */ 483 static final int CMD_REMOVE_NETWORK = BASE + 53; 484 /* Enable a network. The device will attempt a connection to the given network. */ 485 static final int CMD_ENABLE_NETWORK = BASE + 54; 486 /* Enable all networks */ 487 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 488 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 489 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 490 /* Clear the blacklist network list */ 491 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 492 /* Save configuration */ 493 static final int CMD_SAVE_CONFIG = BASE + 58; 494 /* Get configured networks */ 495 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 496 /* Get available frequencies */ 497 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 498 /* Get adaptors */ 499 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 500 /* Get configured networks with real preSharedKey */ 501 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 502 /* Get Link Layer Stats thru HAL */ 503 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 504 /* Supplicant commands after driver start*/ 505 /* Initiate a scan */ 506 static final int CMD_START_SCAN = BASE + 71; 507 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 508 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 509 /* Disconnect from a network */ 510 static final int CMD_DISCONNECT = BASE + 73; 511 /* Reconnect to a network */ 512 static final int CMD_RECONNECT = BASE + 74; 513 /* Reassociate to a network */ 514 static final int CMD_REASSOCIATE = BASE + 75; 515 /* Get Connection Statistis */ 516 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 517 518 /* Controls suspend mode optimizations 519 * 520 * When high perf mode is enabled, suspend mode optimizations are disabled 521 * 522 * When high perf mode is disabled, suspend mode optimizations are enabled 523 * 524 * Suspend mode optimizations include: 525 * - packet filtering 526 * - turn off roaming 527 * - DTIM wake up settings 528 */ 529 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 530 /* Set the country code */ 531 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 532 /* Enables RSSI poll */ 533 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 534 /* RSSI poll */ 535 static final int CMD_RSSI_POLL = BASE + 83; 536 /* Set up packet filtering */ 537 static final int CMD_START_PACKET_FILTERING = BASE + 84; 538 /* Clear packet filter */ 539 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 540 /* Enable suspend mode optimizations in the driver */ 541 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 542 /* Delayed NETWORK_DISCONNECT */ 543 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 544 /* When there are no saved networks, we do a periodic scan to notify user of 545 * an open network */ 546 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 547 /* Test network Disconnection NETWORK_DISCONNECT */ 548 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 549 private int testNetworkDisconnectCounter = 0; 550 551 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 552 static final int MULTICAST_V6 = 1; 553 static final int MULTICAST_V4 = 0; 554 555 /* Set the frequency band */ 556 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 557 /* Enable TDLS on a specific MAC address */ 558 static final int CMD_ENABLE_TDLS = BASE + 92; 559 /* DHCP/IP configuration watchdog */ 560 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 561 562 /** 563 * Make this timer 40 seconds, which is about the normal DHCP timeout. 564 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 565 * for more than 30 seconds. 566 */ 567 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 568 569 int obtainingIpWatchdogCount = 0; 570 571 /* Commands from/to the SupplicantStateTracker */ 572 /* Reset the supplicant state tracker */ 573 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 574 575 576 /** 577 * Watchdog for protecting against b/16823537 578 * Leave time for 4-ways handshake to succeed 579 */ 580 static final int ROAM_GUARD_TIMER_MSEC = 15000; 581 582 int roamWatchdogCount = 0; 583 /* Roam state watchdog */ 584 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 585 /* Screen change intent handling */ 586 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 587 588 int disconnectingWatchdogCount = 0; 589 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 590 591 /* Disconnecting state watchdog */ 592 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 593 594 /* Disable an ephemeral network */ 595 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 596 597 /* P2p commands */ 598 /* We are ok with no response here since we wont do much with it anyway */ 599 public static final int CMD_ENABLE_P2P = BASE + 131; 600 /* In order to shut down supplicant cleanly, we wait till p2p has 601 * been disabled */ 602 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 603 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 604 605 public static final int CMD_BOOT_COMPLETED = BASE + 134; 606 607 /* change the batch scan settings. 608 * arg1 = responsible UID 609 * arg2 = csph (channel scans per hour) 610 * obj = bundle with the new settings and the optional worksource 611 */ 612 public static final int CMD_SET_BATCHED_SCAN = BASE + 135; 613 public static final int CMD_START_NEXT_BATCHED_SCAN = BASE + 136; 614 public static final int CMD_POLL_BATCHED_SCAN = BASE + 137; 615 616 /* We now have a valid IP configuration. */ 617 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 618 /* We no longer have a valid IP configuration. */ 619 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 620 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 621 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 622 623 /* Supplicant is trying to associate to a given BSSID */ 624 static final int CMD_TARGET_BSSID = BASE + 141; 625 626 /* Reload all networks and reconnect */ 627 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 628 629 static final int CMD_AUTO_CONNECT = BASE + 143; 630 631 static final int network_status_unwanted_disconnect = 0; 632 static final int network_status_unwanted_disable_autojoin = 1; 633 634 static final int CMD_UNWANTED_NETWORK = BASE + 144; 635 636 static final int CMD_AUTO_ROAM = BASE + 145; 637 638 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 639 640 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 641 642 static final int CMD_NETWORK_STATUS = BASE + 148; 643 644 /* Wifi state machine modes of operation */ 645 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 646 public static final int CONNECT_MODE = 1; 647 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 648 public static final int SCAN_ONLY_MODE = 2; 649 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 650 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 651 652 private static final int SUCCESS = 1; 653 private static final int FAILURE = -1; 654 655 /* Tracks if suspend optimizations need to be disabled by DHCP, 656 * screen or due to high perf mode. 657 * When any of them needs to disable it, we keep the suspend optimizations 658 * disabled 659 */ 660 private int mSuspendOptNeedsDisabled = 0; 661 662 private static final int SUSPEND_DUE_TO_DHCP = 1; 663 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1<<1; 664 private static final int SUSPEND_DUE_TO_SCREEN = 1<<2; 665 666 /* Tracks if user has enabled suspend optimizations through settings */ 667 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 668 669 /** 670 * Default framework scan interval in milliseconds. This is used in the scenario in which 671 * wifi chipset does not support background scanning to set up a 672 * periodic wake up scan so that the device can connect to a new access 673 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 674 * override this. 675 */ 676 private final int mDefaultFrameworkScanIntervalMs; 677 678 private int mDisconnectedScanPeriodMs = 10000; 679 680 /** 681 * Supplicant scan interval in milliseconds. 682 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 683 * from the default config if the setting is not set 684 */ 685 private long mSupplicantScanIntervalMs; 686 687 /** 688 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 689 */ 690 private long lastFullBandConnectedTimeMilli; 691 692 /** 693 * time interval to the next full band scan we will perform for 694 * autojoin while connected with screen lit 695 */ 696 private long fullBandConnectedTimeIntervalMilli; 697 698 /** 699 * max time interval to the next full band scan we will perform for 700 * autojoin while connected with screen lit 701 * Max time is 5 minutes 702 */ 703 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 704 705 /** 706 * Minimum time interval between enabling all networks. 707 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 708 * due to enabling every time. We add a threshold to avoid this. 709 */ 710 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 711 private long mLastEnableAllNetworksTime; 712 713 int mRunningBeaconCount = 0; 714 715 /** 716 * Starting and shutting down driver too quick causes problems leading to driver 717 * being in a bad state. Delay driver stop. 718 */ 719 private final int mDriverStopDelayMs; 720 private int mDelayedStopCounter; 721 private boolean mInDelayedStop = false; 722 723 // there is a delay between StateMachine change country code and Supplicant change country code 724 // here save the current WifiStateMachine set country code 725 private volatile String mSetCountryCode = null; 726 727 // Supplicant doesn't like setting the same country code multiple times (it may drop 728 // currently connected network), so we save the current device set country code here to avoid 729 // redundency 730 private String mDriverSetCountryCode = null; 731 732 /* Default parent state */ 733 private State mDefaultState = new DefaultState(); 734 /* Temporary initial state */ 735 private State mInitialState = new InitialState(); 736 /* Driver loaded, waiting for supplicant to start */ 737 private State mSupplicantStartingState = new SupplicantStartingState(); 738 /* Driver loaded and supplicant ready */ 739 private State mSupplicantStartedState = new SupplicantStartedState(); 740 /* Waiting for supplicant to stop and monitor to exit */ 741 private State mSupplicantStoppingState = new SupplicantStoppingState(); 742 /* Driver start issued, waiting for completed event */ 743 private State mDriverStartingState = new DriverStartingState(); 744 /* Driver started */ 745 private State mDriverStartedState = new DriverStartedState(); 746 /* Wait until p2p is disabled 747 * This is a special state which is entered right after we exit out of DriverStartedState 748 * before transitioning to another state. 749 */ 750 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 751 /* Driver stopping */ 752 private State mDriverStoppingState = new DriverStoppingState(); 753 /* Driver stopped */ 754 private State mDriverStoppedState = new DriverStoppedState(); 755 /* Scan for networks, no connection will be established */ 756 private State mScanModeState = new ScanModeState(); 757 /* Connecting to an access point */ 758 private State mConnectModeState = new ConnectModeState(); 759 /* Connected at 802.11 (L2) level */ 760 private State mL2ConnectedState = new L2ConnectedState(); 761 /* fetching IP after connection to access point (assoc+auth complete) */ 762 private State mObtainingIpState = new ObtainingIpState(); 763 /* Waiting for link quality verification to be complete */ 764 private State mVerifyingLinkState = new VerifyingLinkState(); 765 /* Connected with IP addr */ 766 private State mConnectedState = new ConnectedState(); 767 /* Roaming */ 768 private State mRoamingState = new RoamingState(); 769 /* disconnect issued, waiting for network disconnect confirmation */ 770 private State mDisconnectingState = new DisconnectingState(); 771 /* Network is not connected, supplicant assoc+auth is not complete */ 772 private State mDisconnectedState = new DisconnectedState(); 773 /* Waiting for WPS to be completed*/ 774 private State mWpsRunningState = new WpsRunningState(); 775 776 /* Soft ap is starting up */ 777 private State mSoftApStartingState = new SoftApStartingState(); 778 /* Soft ap is running */ 779 private State mSoftApStartedState = new SoftApStartedState(); 780 /* Soft ap is running and we are waiting for tether notification */ 781 private State mTetheringState = new TetheringState(); 782 /* Soft ap is running and we are tethered through connectivity service */ 783 private State mTetheredState = new TetheredState(); 784 /* Waiting for untether confirmation before stopping soft Ap */ 785 private State mUntetheringState = new UntetheringState(); 786 787 private class TetherStateChange { 788 ArrayList<String> available; 789 ArrayList<String> active; 790 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 791 available = av; 792 active = ac; 793 } 794 } 795 796 public static class SimAuthRequestData { 797 int networkId; 798 int protocol; 799 String ssid; 800 String[] challenges; 801 } 802 803 public static class SimAuthResponseData { 804 int id; 805 String Kc1; 806 String SRES1; 807 String Kc2; 808 String SRES2; 809 String Kc3; 810 String SRES3; 811 } 812 813 /** 814 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 815 * {@link WifiManager#WIFI_STATE_DISABLING}, 816 * {@link WifiManager#WIFI_STATE_ENABLED}, 817 * {@link WifiManager#WIFI_STATE_ENABLING}, 818 * {@link WifiManager#WIFI_STATE_UNKNOWN} 819 * 820 */ 821 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 822 823 /** 824 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 825 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 826 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 827 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 828 * {@link WifiManager#WIFI_AP_STATE_FAILED} 829 * 830 */ 831 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 832 833 private static final int SCAN_REQUEST = 0; 834 private static final String ACTION_START_SCAN = 835 "com.android.server.WifiManager.action.START_SCAN"; 836 837 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 838 private static final int DRIVER_STOP_REQUEST = 0; 839 private static final String ACTION_DELAYED_DRIVER_STOP = 840 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 841 842 private static final String ACTION_REFRESH_BATCHED_SCAN = 843 "com.android.server.WifiManager.action.REFRESH_BATCHED_SCAN"; 844 /** 845 * Keep track of whether WIFI is running. 846 */ 847 private boolean mIsRunning = false; 848 849 /** 850 * Keep track of whether we last told the battery stats we had started. 851 */ 852 private boolean mReportedRunning = false; 853 854 /** 855 * Most recently set source of starting WIFI. 856 */ 857 private final WorkSource mRunningWifiUids = new WorkSource(); 858 859 /** 860 * The last reported UIDs that were responsible for starting WIFI. 861 */ 862 private final WorkSource mLastRunningWifiUids = new WorkSource(); 863 864 private final IBatteryStats mBatteryStats; 865 866 private BatchedScanSettings mBatchedScanSettings = null; 867 868 /** 869 * Track the worksource/cost of the current settings and track what's been noted 870 * to the battery stats, so we can mark the end of the previous when changing. 871 */ 872 private WorkSource mBatchedScanWorkSource = null; 873 private int mBatchedScanCsph = 0; 874 private WorkSource mNotedBatchedScanWorkSource = null; 875 private int mNotedBatchedScanCsph = 0; 876 877 private String mTcpBufferSizes = null; 878 879 // Used for debug and stats gathering 880 private static int sScanAlarmIntentCount = 0; 881 882 final static int frameworkMinScanIntervalSaneValue = 10000; 883 884 public WifiStateMachine(Context context, String wlanInterface, 885 WifiTrafficPoller trafficPoller){ 886 super("WifiStateMachine"); 887 mContext = context; 888 mSetCountryCode = Settings.Global.getString( 889 mContext.getContentResolver(), Settings.Global.WIFI_COUNTRY_CODE); 890 mInterfaceName = wlanInterface; 891 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 892 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 893 BatteryStats.SERVICE_NAME)); 894 895 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 896 mNwService = INetworkManagementService.Stub.asInterface(b); 897 898 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 899 PackageManager.FEATURE_WIFI_DIRECT); 900 901 mWifiNative = new WifiNative(mInterfaceName); 902 mWifiConfigStore = new WifiConfigStore(context, mWifiNative); 903 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 904 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 905 mWifiMonitor = new WifiMonitor(this, mWifiNative); 906 mWifiInfo = new WifiInfo(); 907 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 908 getHandler()); 909 mLinkProperties = new LinkProperties(); 910 911 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 912 mWifiP2pServiceImpl = (WifiP2pServiceImpl)IWifiP2pManager.Stub.asInterface(s1); 913 914 mNetworkInfo.setIsAvailable(false); 915 mLastBssid = null; 916 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 917 mLastSignalLevel = -1; 918 919 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 920 public void update() { 921 sendMessage(CMD_UPDATE_LINKPROPERTIES); 922 } 923 }); 924 try { 925 mNwService.registerObserver(mNetlinkTracker); 926 } catch (RemoteException e) { 927 loge("Couldn't register netlink tracker: " + e.toString()); 928 } 929 930 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 931 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 932 mBatchedScanIntervalIntent = getPrivateBroadcast(ACTION_REFRESH_BATCHED_SCAN, 0); 933 934 // Make sure the interval is not configured less than 10 seconds 935 int period = mContext.getResources().getInteger( 936 R.integer.config_wifi_framework_scan_interval); 937 if (period < frameworkMinScanIntervalSaneValue) { 938 period = frameworkMinScanIntervalSaneValue; 939 } 940 mDefaultFrameworkScanIntervalMs = period; 941 mDriverStopDelayMs = mContext.getResources().getInteger( 942 R.integer.config_wifi_driver_stop_delay); 943 944 mBackgroundScanSupported = mContext.getResources().getBoolean( 945 R.bool.config_wifi_background_scan_support); 946 947 mPrimaryDeviceType = mContext.getResources().getString( 948 R.string.config_wifi_p2p_device_type); 949 950 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 951 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 952 953 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 954 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 955 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 956 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 957 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 958 // TODO - needs to be a bit more dynamic 959 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 960 961 mContext.registerReceiver( 962 new BroadcastReceiver() { 963 @Override 964 public void onReceive(Context context, Intent intent) { 965 ArrayList<String> available = intent.getStringArrayListExtra( 966 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 967 ArrayList<String> active = intent.getStringArrayListExtra( 968 ConnectivityManager.EXTRA_ACTIVE_TETHER); 969 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 970 } 971 },new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 972 973 mContext.registerReceiver( 974 new BroadcastReceiver() { 975 @Override 976 public void onReceive(Context context, Intent intent) { 977 sScanAlarmIntentCount++; // Used for debug only 978 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 979 if (VDBG) 980 loge("WiFiStateMachine SCAN ALARM -> " + mDelayedScanCounter.get()); 981 } 982 }, 983 new IntentFilter(ACTION_START_SCAN)); 984 985 IntentFilter filter = new IntentFilter(); 986 filter.addAction(Intent.ACTION_SCREEN_ON); 987 filter.addAction(Intent.ACTION_SCREEN_OFF); 988 filter.addAction(ACTION_REFRESH_BATCHED_SCAN); 989 mContext.registerReceiver( 990 new BroadcastReceiver() { 991 @Override 992 public void onReceive(Context context, Intent intent) { 993 String action = intent.getAction(); 994 995 if (action.equals(Intent.ACTION_SCREEN_ON)) { 996 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 997 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 998 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 999 } else if (action.equals(ACTION_REFRESH_BATCHED_SCAN)) { 1000 startNextBatchedScanAsync(); 1001 } 1002 } 1003 }, filter); 1004 1005 mContext.registerReceiver( 1006 new BroadcastReceiver() { 1007 @Override 1008 public void onReceive(Context context, Intent intent) { 1009 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 1010 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 1011 } 1012 }, 1013 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1014 1015 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1016 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1017 new ContentObserver(getHandler()) { 1018 @Override 1019 public void onChange(boolean selfChange) { 1020 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1021 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1022 } 1023 }); 1024 1025 mContext.registerReceiver( 1026 new BroadcastReceiver() { 1027 @Override 1028 public void onReceive(Context context, Intent intent) { 1029 sendMessage(CMD_BOOT_COMPLETED); 1030 } 1031 }, 1032 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1033 1034 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1035 1036 PowerManager powerManager = (PowerManager)mContext.getSystemService(Context.POWER_SERVICE); 1037 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1038 1039 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1040 mSuspendWakeLock.setReferenceCounted(false); 1041 1042 mTcpBufferSizes = mContext.getResources().getString( 1043 com.android.internal.R.string.config_wifi_tcp_buffers); 1044 1045 addState(mDefaultState); 1046 addState(mInitialState, mDefaultState); 1047 addState(mSupplicantStartingState, mDefaultState); 1048 addState(mSupplicantStartedState, mDefaultState); 1049 addState(mDriverStartingState, mSupplicantStartedState); 1050 addState(mDriverStartedState, mSupplicantStartedState); 1051 addState(mScanModeState, mDriverStartedState); 1052 addState(mConnectModeState, mDriverStartedState); 1053 addState(mL2ConnectedState, mConnectModeState); 1054 addState(mObtainingIpState, mL2ConnectedState); 1055 addState(mVerifyingLinkState, mL2ConnectedState); 1056 addState(mConnectedState, mL2ConnectedState); 1057 addState(mRoamingState, mL2ConnectedState); 1058 addState(mDisconnectingState, mConnectModeState); 1059 addState(mDisconnectedState, mConnectModeState); 1060 addState(mWpsRunningState, mConnectModeState); 1061 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1062 addState(mDriverStoppingState, mSupplicantStartedState); 1063 addState(mDriverStoppedState, mSupplicantStartedState); 1064 addState(mSupplicantStoppingState, mDefaultState); 1065 addState(mSoftApStartingState, mDefaultState); 1066 addState(mSoftApStartedState, mDefaultState); 1067 addState(mTetheringState, mSoftApStartedState); 1068 addState(mTetheredState, mSoftApStartedState); 1069 addState(mUntetheringState, mSoftApStartedState); 1070 1071 setInitialState(mInitialState); 1072 1073 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1074 setLogOnlyTransitions(false); 1075 if (VDBG) setDbg(true); 1076 1077 //start the state machine 1078 start(); 1079 1080 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1081 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1082 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1083 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1084 } 1085 1086 1087 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1088 Intent intent = new Intent(action, null); 1089 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1090 intent.setPackage(this.getClass().getPackage().getName()); 1091 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1092 } 1093 1094 private int mVerboseLoggingLevel = 0; 1095 1096 int getVerboseLoggingLevel() { 1097 return mVerboseLoggingLevel; 1098 } 1099 1100 void enableVerboseLogging(int verbose) { 1101 mVerboseLoggingLevel = verbose; 1102 if (verbose > 0) { 1103 DBG = true; 1104 VDBG = true; 1105 PDBG = true; 1106 mLogMessages = true; 1107 mWifiNative.setSupplicantLogLevel("DEBUG"); 1108 } else { 1109 DBG = false; 1110 VDBG = false; 1111 PDBG = false; 1112 mLogMessages = false; 1113 mWifiNative.setSupplicantLogLevel("INFO"); 1114 } 1115 mWifiAutoJoinController.enableVerboseLogging(verbose); 1116 mWifiMonitor.enableVerboseLogging(verbose); 1117 mWifiNative.enableVerboseLogging(verbose); 1118 mWifiConfigStore.enableVerboseLogging(verbose); 1119 mSupplicantStateTracker.enableVerboseLogging(verbose); 1120 } 1121 1122 private int mAggressiveHandover = 0; 1123 1124 int getAggressiveHandover() { 1125 return mAggressiveHandover; 1126 } 1127 1128 void enableAggressiveHandover(int enabled) { 1129 mAggressiveHandover = enabled; 1130 } 1131 1132 public void setAllowScansWithTraffic(int enabled) { 1133 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1134 } 1135 1136 public int getAllowScansWithTraffic() { 1137 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1138 } 1139 1140 public void setAllowScansWhileAssociated(boolean enabled) { 1141 mWifiConfigStore.enableAutoJoinScanWhenAssociated.set(enabled); 1142 } 1143 1144 public boolean getAllowScansWhileAssociated() { 1145 return mWifiConfigStore.enableAutoJoinScanWhenAssociated.get(); 1146 } 1147 1148 /* 1149 * 1150 * Framework scan control 1151 */ 1152 1153 private boolean mAlarmEnabled = false; 1154 /* This is set from the overlay config file or from a secure setting. 1155 * A value of 0 disables scanning in the framework. 1156 */ 1157 private long mFrameworkScanIntervalMs = 10000; 1158 1159 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1160 1161 private void setScanAlarm(boolean enabled) { 1162 if (PDBG) { 1163 loge("setScanAlarm " + enabled 1164 + " period " + mDefaultFrameworkScanIntervalMs 1165 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1166 } 1167 if (mBackgroundScanSupported == false) { 1168 // Scan alarm is only used for background scans if they are not 1169 // offloaded to the wifi chipset, hence enable the scan alarm 1170 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1171 enabled = true; 1172 } 1173 1174 if (enabled == mAlarmEnabled) return; 1175 if (enabled) { 1176 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1177 /* going to wake up the host processor to look for access points */ 1178 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1179 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1180 mScanIntent); 1181 mAlarmEnabled = true; 1182 } else { 1183 mAlarmManager.cancel(mScanIntent); 1184 mAlarmEnabled = false; 1185 } 1186 } 1187 1188 private void cancelDelayedScan() { 1189 mDelayedScanCounter.incrementAndGet(); 1190 loge("cancelDelayedScan -> " + mDelayedScanCounter); 1191 } 1192 1193 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1194 ScanSettings settings, WorkSource workSource) { 1195 if (counter != mDelayedScanCounter.get()) { 1196 return false; 1197 } 1198 if (restart) 1199 startDelayedScan(milli, settings, workSource); 1200 return true; 1201 } 1202 1203 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1204 if (milli <= 0) return; 1205 /** 1206 * The cases where the scan alarm should be run are : 1207 * - DisconnectedState && screenOn => used delayed timer 1208 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1209 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1210 * - ConnectedState && screenOn => used delayed timer 1211 */ 1212 1213 mDelayedScanCounter.incrementAndGet(); 1214 if (mScreenOn && 1215 (getCurrentState() == mDisconnectedState 1216 || getCurrentState() == mConnectedState)) { 1217 Bundle bundle = new Bundle(); 1218 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1219 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1220 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1221 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1222 mDelayedScanCounter.get(), bundle, milli); 1223 if (DBG) loge("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1224 } else if (mBackgroundScanSupported == false 1225 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1226 setScanAlarm(true); 1227 if (DBG) loge("startDelayedScan start scan alarm -> " 1228 + mDelayedScanCounter + " milli " + milli); 1229 } else { 1230 if (DBG) loge("startDelayedScan unhandled -> " 1231 + mDelayedScanCounter + " milli " + milli); 1232 } 1233 } 1234 1235 private boolean setRandomMacOui() { 1236 String oui = mContext.getResources().getString( 1237 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1238 String[] ouiParts = oui.split("-"); 1239 byte[] ouiBytes = new byte[3]; 1240 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1241 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1242 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1243 1244 logd("Setting OUI to " + oui); 1245 return mWifiNative.setScanningMacOui(ouiBytes); 1246 } 1247 1248 /********************************************************* 1249 * Methods exposed for public use 1250 ********************************************************/ 1251 1252 public Messenger getMessenger() { 1253 return new Messenger(getHandler()); 1254 } 1255 1256 public WifiMonitor getWifiMonitor() { 1257 return mWifiMonitor; 1258 } 1259 1260 /** 1261 * TODO: doc 1262 */ 1263 public boolean syncPingSupplicant(AsyncChannel channel) { 1264 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1265 boolean result = (resultMsg.arg1 != FAILURE); 1266 resultMsg.recycle(); 1267 return result; 1268 } 1269 1270 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1271 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1272 List<WifiChannel> list = null; 1273 if (resultMsg.obj != null) { 1274 list = new ArrayList<WifiChannel>(); 1275 String freqs = (String) resultMsg.obj; 1276 String[] lines = freqs.split("\n"); 1277 for (String line : lines) 1278 if (line.contains("MHz")) { 1279 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1280 WifiChannel c = new WifiChannel(); 1281 String[] prop = line.split(" "); 1282 if (prop.length < 5) continue; 1283 try { 1284 c.channelNum = Integer.parseInt(prop[1]); 1285 c.freqMHz = Integer.parseInt(prop[3]); 1286 } catch (NumberFormatException e) { } 1287 c.isDFS = line.contains("(DFS)"); 1288 list.add(c); 1289 } else if (line.contains("Mode[B] Channels:")) { 1290 // B channels are the same as G channels, skipped 1291 break; 1292 } 1293 } 1294 resultMsg.recycle(); 1295 return (list != null && list.size() > 0) ? list : null; 1296 } 1297 1298 /** 1299 * When settings allowing making use of untrusted networks change, trigger a scan 1300 * so as to kick of autojoin. 1301 */ 1302 public void startScanForUntrustedSettingChange() { 1303 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1304 } 1305 1306 /** 1307 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1308 * given to callingUid. 1309 * 1310 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1311 * workSource is specified. 1312 * @param workSource If not null, blame is given to workSource. 1313 * @param settings Scan settings, see {@link ScanSettings}. 1314 */ 1315 public void startScan(int callingUid, int scanCounter, 1316 ScanSettings settings, WorkSource workSource) { 1317 Bundle bundle = new Bundle(); 1318 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1319 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1320 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1321 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1322 } 1323 1324 /** 1325 * start or stop batched scanning using the given settings 1326 */ 1327 public void setBatchedScanSettings(BatchedScanSettings settings, int callingUid, int csph, 1328 WorkSource workSource) { 1329 Bundle bundle = new Bundle(); 1330 bundle.putParcelable(BATCHED_SETTING, settings); 1331 bundle.putParcelable(BATCHED_WORKSOURCE, workSource); 1332 sendMessage(CMD_SET_BATCHED_SCAN, callingUid, csph, bundle); 1333 } 1334 1335 public List<BatchedScanResult> syncGetBatchedScanResultsList() { 1336 synchronized (mBatchedScanResults) { 1337 List<BatchedScanResult> batchedScanList = 1338 new ArrayList<BatchedScanResult>(mBatchedScanResults.size()); 1339 for(BatchedScanResult result: mBatchedScanResults) { 1340 batchedScanList.add(new BatchedScanResult(result)); 1341 } 1342 return batchedScanList; 1343 } 1344 } 1345 1346 public void requestBatchedScanPoll() { 1347 sendMessage(CMD_POLL_BATCHED_SCAN); 1348 } 1349 1350 private void startBatchedScan() { 1351 if (mBatchedScanSettings == null) return; 1352 1353 if (mDhcpActive) { 1354 if (DBG) log("not starting Batched Scans due to DHCP"); 1355 return; 1356 } 1357 1358 // first grab any existing data 1359 retrieveBatchedScanData(); 1360 1361 if (PDBG) loge("try starting Batched Scans due to DHCP"); 1362 1363 1364 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1365 1366 String scansExpected = mWifiNative.setBatchedScanSettings(mBatchedScanSettings); 1367 try { 1368 mExpectedBatchedScans = Integer.parseInt(scansExpected); 1369 setNextBatchedAlarm(mExpectedBatchedScans); 1370 if (mExpectedBatchedScans > 0) noteBatchedScanStart(); 1371 } catch (NumberFormatException e) { 1372 stopBatchedScan(); 1373 loge("Exception parsing WifiNative.setBatchedScanSettings response " + e); 1374 } 1375 } 1376 1377 // called from BroadcastListener 1378 private void startNextBatchedScanAsync() { 1379 sendMessage(CMD_START_NEXT_BATCHED_SCAN); 1380 } 1381 1382 private void startNextBatchedScan() { 1383 // first grab any existing data 1384 retrieveBatchedScanData(); 1385 1386 setNextBatchedAlarm(mExpectedBatchedScans); 1387 } 1388 1389 private void handleBatchedScanPollRequest() { 1390 if (DBG) { 1391 log("handleBatchedScanPoll Request - mBatchedScanMinPollTime=" + 1392 mBatchedScanMinPollTime + " , mBatchedScanSettings=" + 1393 mBatchedScanSettings); 1394 } 1395 // if there is no appropriate PollTime that's because we either aren't 1396 // batching or we've already set a time for a poll request 1397 if (mBatchedScanMinPollTime == 0) return; 1398 if (mBatchedScanSettings == null) return; 1399 1400 long now = System.currentTimeMillis(); 1401 1402 if (now > mBatchedScanMinPollTime) { 1403 // do the poll and reset our timers 1404 startNextBatchedScan(); 1405 } else { 1406 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, mBatchedScanMinPollTime, 1407 mBatchedScanIntervalIntent); 1408 mBatchedScanMinPollTime = 0; 1409 } 1410 } 1411 1412 // return true if new/different 1413 private boolean recordBatchedScanSettings(int responsibleUid, int csph, Bundle bundle) { 1414 BatchedScanSettings settings = bundle.getParcelable(BATCHED_SETTING); 1415 WorkSource responsibleWorkSource = bundle.getParcelable(BATCHED_WORKSOURCE); 1416 1417 if (DBG) { 1418 log("set batched scan to " + settings + " for uid=" + responsibleUid + 1419 ", worksource=" + responsibleWorkSource); 1420 } 1421 if (settings != null) { 1422 if (settings.equals(mBatchedScanSettings)) return false; 1423 } else { 1424 if (mBatchedScanSettings == null) return false; 1425 } 1426 mBatchedScanSettings = settings; 1427 if (responsibleWorkSource == null) responsibleWorkSource = new WorkSource(responsibleUid); 1428 mBatchedScanWorkSource = responsibleWorkSource; 1429 mBatchedScanCsph = csph; 1430 return true; 1431 } 1432 1433 private void stopBatchedScan() { 1434 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1435 retrieveBatchedScanData(); 1436 mWifiNative.setBatchedScanSettings(null); 1437 noteBatchedScanStop(); 1438 } 1439 1440 private void setNextBatchedAlarm(int scansExpected) { 1441 1442 if (mBatchedScanSettings == null || scansExpected < 1) return; 1443 1444 mBatchedScanMinPollTime = System.currentTimeMillis() + 1445 mBatchedScanSettings.scanIntervalSec * 1000; 1446 1447 if (mBatchedScanSettings.maxScansPerBatch < scansExpected) { 1448 scansExpected = mBatchedScanSettings.maxScansPerBatch; 1449 } 1450 1451 int secToFull = mBatchedScanSettings.scanIntervalSec; 1452 secToFull *= scansExpected; 1453 1454 int debugPeriod = SystemProperties.getInt("wifi.batchedScan.pollPeriod", 0); 1455 if (debugPeriod > 0) secToFull = debugPeriod; 1456 1457 // set the alarm to do the next poll. We set it a little short as we'd rather 1458 // wake up wearly than miss a scan due to buffer overflow 1459 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 1460 + ((secToFull - (mBatchedScanSettings.scanIntervalSec / 2)) * 1000), 1461 mBatchedScanIntervalIntent); 1462 } 1463 1464 /** 1465 * Start reading new scan data 1466 * Data comes in as: 1467 * "scancount=5\n" 1468 * "nextcount=5\n" 1469 * "apcount=3\n" 1470 * "trunc\n" (optional) 1471 * "bssid=...\n" 1472 * "ssid=...\n" 1473 * "freq=...\n" (in Mhz) 1474 * "level=...\n" 1475 * "dist=...\n" (in cm) 1476 * "distsd=...\n" (standard deviation, in cm) 1477 * "====" 1478 * "bssid=...\n" 1479 * etc 1480 * "====" 1481 * "bssid=...\n" 1482 * etc 1483 * "%%%%" 1484 * "apcount=2\n" 1485 * "bssid=...\n" 1486 * etc 1487 * "%%%% 1488 * etc 1489 * "----" 1490 */ 1491 private final static boolean DEBUG_PARSE = false; 1492 private void retrieveBatchedScanData() { 1493 String rawData = mWifiNative.getBatchedScanResults(); 1494 if (DEBUG_PARSE) log("rawData = " + rawData); 1495 mBatchedScanMinPollTime = 0; 1496 if (rawData == null || rawData.equalsIgnoreCase("OK")) { 1497 loge("Unexpected BatchedScanResults :" + rawData); 1498 return; 1499 } 1500 1501 int scanCount = 0; 1502 final String END_OF_BATCHES = "----"; 1503 final String SCANCOUNT = "scancount="; 1504 final String TRUNCATED = "trunc"; 1505 final String AGE = "age="; 1506 final String DIST = "dist="; 1507 final String DISTSD = "distSd="; 1508 1509 String splitData[] = rawData.split("\n"); 1510 int n = 0; 1511 if (splitData[n].startsWith(SCANCOUNT)) { 1512 try { 1513 scanCount = Integer.parseInt(splitData[n++].substring(SCANCOUNT.length())); 1514 } catch (NumberFormatException e) { 1515 loge("scancount parseInt Exception from " + splitData[n]); 1516 } 1517 } else log("scancount not found"); 1518 if (scanCount == 0) { 1519 loge("scanCount==0 - aborting"); 1520 return; 1521 } 1522 1523 final Intent intent = new Intent(WifiManager.BATCHED_SCAN_RESULTS_AVAILABLE_ACTION); 1524 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1525 1526 synchronized (mBatchedScanResults) { 1527 mBatchedScanResults.clear(); 1528 BatchedScanResult batchedScanResult = new BatchedScanResult(); 1529 1530 String bssid = null; 1531 WifiSsid wifiSsid = null; 1532 int level = 0; 1533 int freq = 0; 1534 int dist, distSd; 1535 long tsf = 0; 1536 dist = distSd = ScanResult.UNSPECIFIED; 1537 final long now = SystemClock.elapsedRealtime(); 1538 final int bssidStrLen = BSSID_STR.length(); 1539 1540 while (true) { 1541 while (n < splitData.length) { 1542 if (DEBUG_PARSE) logd("parsing " + splitData[n]); 1543 if (splitData[n].equals(END_OF_BATCHES)) { 1544 if (n+1 != splitData.length) { 1545 loge("didn't consume " + (splitData.length-n)); 1546 } 1547 if (mBatchedScanResults.size() > 0) { 1548 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1549 } 1550 logd("retrieveBatchedScanResults X"); 1551 return; 1552 } 1553 if ((splitData[n].equals(END_STR)) || splitData[n].equals(DELIMITER_STR)) { 1554 if (bssid != null) { 1555 batchedScanResult.scanResults.add(new ScanResult( 1556 wifiSsid, bssid, null, 1557 level, freq, tsf, dist, distSd)); 1558 wifiSsid = null; 1559 bssid = null; 1560 level = 0; 1561 freq = 0; 1562 tsf = 0; 1563 dist = distSd = ScanResult.UNSPECIFIED; 1564 } 1565 if (splitData[n].equals(END_STR)) { 1566 if (batchedScanResult.scanResults.size() != 0) { 1567 mBatchedScanResults.add(batchedScanResult); 1568 batchedScanResult = new BatchedScanResult(); 1569 } else { 1570 logd("Found empty batch"); 1571 } 1572 } 1573 } else if (splitData[n].equals(TRUNCATED)) { 1574 batchedScanResult.truncated = true; 1575 } else if (splitData[n].startsWith(BSSID_STR)) { 1576 bssid = new String(splitData[n].getBytes(), bssidStrLen, 1577 splitData[n].length() - bssidStrLen); 1578 } else if (splitData[n].startsWith(FREQ_STR)) { 1579 try { 1580 freq = Integer.parseInt(splitData[n].substring(FREQ_STR.length())); 1581 } catch (NumberFormatException e) { 1582 loge("Invalid freqency: " + splitData[n]); 1583 freq = 0; 1584 } 1585 } else if (splitData[n].startsWith(AGE)) { 1586 try { 1587 tsf = now - Long.parseLong(splitData[n].substring(AGE.length())); 1588 tsf *= 1000; // convert mS -> uS 1589 } catch (NumberFormatException e) { 1590 loge("Invalid timestamp: " + splitData[n]); 1591 tsf = 0; 1592 } 1593 } else if (splitData[n].startsWith(SSID_STR)) { 1594 wifiSsid = WifiSsid.createFromAsciiEncoded( 1595 splitData[n].substring(SSID_STR.length())); 1596 } else if (splitData[n].startsWith(LEVEL_STR)) { 1597 try { 1598 level = Integer.parseInt(splitData[n].substring(LEVEL_STR.length())); 1599 if (level > 0) level -= 256; 1600 } catch (NumberFormatException e) { 1601 loge("Invalid level: " + splitData[n]); 1602 level = 0; 1603 } 1604 } else if (splitData[n].startsWith(DIST)) { 1605 try { 1606 dist = Integer.parseInt(splitData[n].substring(DIST.length())); 1607 } catch (NumberFormatException e) { 1608 loge("Invalid distance: " + splitData[n]); 1609 dist = ScanResult.UNSPECIFIED; 1610 } 1611 } else if (splitData[n].startsWith(DISTSD)) { 1612 try { 1613 distSd = Integer.parseInt(splitData[n].substring(DISTSD.length())); 1614 } catch (NumberFormatException e) { 1615 loge("Invalid distanceSd: " + splitData[n]); 1616 distSd = ScanResult.UNSPECIFIED; 1617 } 1618 } else { 1619 loge("Unable to parse batched scan result line: " + splitData[n]); 1620 } 1621 n++; 1622 } 1623 rawData = mWifiNative.getBatchedScanResults(); 1624 if (DEBUG_PARSE) log("reading more data:\n" + rawData); 1625 if (rawData == null) { 1626 loge("Unexpected null BatchedScanResults"); 1627 return; 1628 } 1629 splitData = rawData.split("\n"); 1630 if (splitData.length == 0 || splitData[0].equals("ok")) { 1631 loge("batch scan results just ended!"); 1632 if (mBatchedScanResults.size() > 0) { 1633 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1634 } 1635 return; 1636 } 1637 n = 0; 1638 } 1639 } 1640 } 1641 1642 private long mDisconnectedTimeStamp = 0; 1643 1644 public long getDisconnectedTimeMilli() { 1645 if (getCurrentState() == mDisconnectedState 1646 && mDisconnectedTimeStamp != 0) { 1647 long now_ms = System.currentTimeMillis(); 1648 return now_ms - mDisconnectedTimeStamp; 1649 } 1650 return 0; 1651 } 1652 1653 // Keeping track of scan requests 1654 private long lastStartScanTimeStamp = 0; 1655 private long lastScanDuration = 0; 1656 // Last connect attempt is used to prevent scan requests: 1657 // - for a period of 10 seconds after attempting to connect 1658 private long lastConnectAttempt = 0; 1659 private String lastScanFreqs = null; 1660 1661 // For debugging, keep track of last message status handling 1662 // TODO, find an equivalent mechanism as part of parent class 1663 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1664 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1665 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1666 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1667 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1668 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1669 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1670 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1671 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1672 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1673 1674 private int messageHandlingStatus = 0; 1675 1676 //TODO: this is used only to track connection attempts, however the link state and packet per 1677 //TODO: second logic should be folded into that 1678 private boolean checkOrDeferScanAllowed(Message msg) { 1679 long now = System.currentTimeMillis(); 1680 if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { 1681 Message dmsg = Message.obtain(msg); 1682 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttempt)); 1683 return false; 1684 } 1685 return true; 1686 } 1687 1688 private int mOnTime = 0; 1689 private int mTxTime = 0; 1690 private int mRxTime = 0; 1691 private int mOnTimeStartScan = 0; 1692 private int mTxTimeStartScan = 0; 1693 private int mRxTimeStartScan = 0; 1694 private int mOnTimeScan = 0; 1695 private int mTxTimeScan = 0; 1696 private int mRxTimeScan = 0; 1697 private int mOnTimeThisScan = 0; 1698 private int mTxTimeThisScan = 0; 1699 private int mRxTimeThisScan = 0; 1700 1701 private int mOnTimeScreenStateChange = 0; 1702 private int mOnTimeAtLastReport = 0; 1703 private long lastOntimeReportTimeStamp = 0; 1704 private long lastScreenStateChangeTimeStamp = 0; 1705 private int mOnTimeLastReport = 0; 1706 private int mTxTimeLastReport = 0; 1707 private int mRxTimeLastReport = 0; 1708 1709 private long lastLinkLayerStatsUpdate = 0; 1710 1711 String reportOnTime() { 1712 long now = System.currentTimeMillis(); 1713 StringBuilder sb = new StringBuilder(); 1714 // Report stats since last report 1715 int on = mOnTime - mOnTimeLastReport; 1716 mOnTimeLastReport = mOnTime; 1717 int tx = mTxTime - mTxTimeLastReport; 1718 mTxTimeLastReport = mTxTime; 1719 int rx = mRxTime - mRxTimeLastReport; 1720 mRxTimeLastReport = mRxTime; 1721 int period = (int)(now - lastOntimeReportTimeStamp); 1722 lastOntimeReportTimeStamp = now; 1723 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1724 // Report stats since Screen State Changed 1725 on = mOnTime - mOnTimeScreenStateChange; 1726 period = (int)(now - lastScreenStateChangeTimeStamp); 1727 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1728 return sb.toString(); 1729 } 1730 1731 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1732 WifiLinkLayerStats stats = null; 1733 if (mWifiLinkLayerStatsSupported > 0) { 1734 String name = "wlan0"; 1735 stats = mWifiNative.getWifiLinkLayerStats(name); 1736 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1737 mWifiLinkLayerStatsSupported -= 1; 1738 } else if (stats != null) { 1739 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1740 mOnTime = stats.on_time; 1741 mTxTime = stats.tx_time; 1742 mRxTime = stats.rx_time; 1743 mRunningBeaconCount = stats.beacon_rx; 1744 if (dbg) { 1745 loge(stats.toString()); 1746 } 1747 } 1748 } 1749 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1750 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1751 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1752 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1753 } else { 1754 mWifiInfo.updatePacketRates(stats); 1755 } 1756 return stats; 1757 } 1758 1759 void startRadioScanStats() { 1760 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1761 if (stats != null) { 1762 mOnTimeStartScan = stats.on_time; 1763 mTxTimeStartScan = stats.tx_time; 1764 mRxTimeStartScan = stats.rx_time; 1765 mOnTime = stats.on_time; 1766 mTxTime = stats.tx_time; 1767 mRxTime = stats.rx_time; 1768 } 1769 } 1770 1771 void closeRadioScanStats() { 1772 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1773 if (stats != null) { 1774 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1775 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1776 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1777 mOnTimeScan += mOnTimeThisScan; 1778 mTxTimeScan += mTxTimeThisScan; 1779 mRxTimeScan += mRxTimeThisScan; 1780 } 1781 } 1782 1783 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1784 private void noteScanStart(int callingUid, WorkSource workSource) { 1785 long now = System.currentTimeMillis(); 1786 lastStartScanTimeStamp = now; 1787 lastScanDuration = 0; 1788 if (DBG) { 1789 String ts = String.format("[%,d ms]", now); 1790 if (workSource != null) { 1791 loge(ts + " noteScanStart" + workSource.toString() 1792 + " uid " + Integer.toString(callingUid)); 1793 } else { 1794 loge(ts + " noteScanstart no scan source" 1795 + " uid " + Integer.toString(callingUid)); 1796 } 1797 } 1798 startRadioScanStats(); 1799 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1800 && callingUid != SCAN_ALARM_SOURCE) 1801 || workSource != null)) { 1802 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1803 try { 1804 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 1805 } catch (RemoteException e) { 1806 log(e.toString()); 1807 } 1808 } 1809 } 1810 1811 private void noteScanEnd() { 1812 long now = System.currentTimeMillis(); 1813 if (lastStartScanTimeStamp != 0) { 1814 lastScanDuration = now - lastStartScanTimeStamp; 1815 } 1816 lastStartScanTimeStamp = 0; 1817 if (DBG) { 1818 String ts = String.format("[%,d ms]", now); 1819 if (mScanWorkSource != null) 1820 loge(ts + " noteScanEnd " + mScanWorkSource.toString() 1821 + " onTime=" + mOnTimeThisScan); 1822 else 1823 loge(ts + " noteScanEnd no scan source" 1824 + " onTime=" + mOnTimeThisScan); 1825 } 1826 if (mScanWorkSource != null) { 1827 try { 1828 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1829 } catch (RemoteException e) { 1830 log(e.toString()); 1831 } finally { 1832 mScanWorkSource = null; 1833 } 1834 } 1835 } 1836 1837 private void noteBatchedScanStart() { 1838 if (PDBG) loge("noteBatchedScanstart()"); 1839 // note the end of a previous scan set 1840 if (mNotedBatchedScanWorkSource != null && 1841 (mNotedBatchedScanWorkSource.equals(mBatchedScanWorkSource) == false || 1842 mNotedBatchedScanCsph != mBatchedScanCsph)) { 1843 try { 1844 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1845 } catch (RemoteException e) { 1846 log(e.toString()); 1847 } finally { 1848 mNotedBatchedScanWorkSource = null; 1849 mNotedBatchedScanCsph = 0; 1850 } 1851 } 1852 // note the start of the new 1853 try { 1854 mBatteryStats.noteWifiBatchedScanStartedFromSource(mBatchedScanWorkSource, 1855 mBatchedScanCsph); 1856 mNotedBatchedScanWorkSource = mBatchedScanWorkSource; 1857 mNotedBatchedScanCsph = mBatchedScanCsph; 1858 } catch (RemoteException e) { 1859 log(e.toString()); 1860 } 1861 } 1862 1863 private void noteBatchedScanStop() { 1864 if (PDBG) loge("noteBatchedScanstop()"); 1865 1866 if (mNotedBatchedScanWorkSource != null) { 1867 try { 1868 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1869 } catch (RemoteException e) { 1870 log(e.toString()); 1871 } finally { 1872 mNotedBatchedScanWorkSource = null; 1873 mNotedBatchedScanCsph = 0; 1874 } 1875 } 1876 } 1877 1878 private void handleScanRequest(int type, Message message) { 1879 ScanSettings settings = null; 1880 WorkSource workSource = null; 1881 1882 // unbundle parameters 1883 Bundle bundle = (Bundle) message.obj; 1884 1885 if (bundle != null) { 1886 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1887 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1888 } 1889 1890 // parse scan settings 1891 String freqs = null; 1892 if (settings != null && settings.channelSet != null) { 1893 StringBuilder sb = new StringBuilder(); 1894 boolean first = true; 1895 for (WifiChannel channel : settings.channelSet) { 1896 if (!first) sb.append(','); else first = false; 1897 sb.append(channel.freqMHz); 1898 } 1899 freqs = sb.toString(); 1900 } 1901 1902 // call wifi native to start the scan 1903 if (startScanNative(type, freqs)) { 1904 // only count battery consumption if scan request is accepted 1905 noteScanStart(message.arg1, workSource); 1906 // a full scan covers everything, clearing scan request buffer 1907 if (freqs == null) 1908 mBufferedScanMsg.clear(); 1909 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1910 if (workSource != null) { 1911 // External worksource was passed along the scan request, 1912 // hence always send a broadcast 1913 mSendScanResultsBroadcast = true; 1914 } 1915 return; 1916 } 1917 1918 // if reach here, scan request is rejected 1919 1920 if (!mIsScanOngoing) { 1921 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1922 1923 // discard this request and pop up the next one 1924 if (mBufferedScanMsg.size() > 0) { 1925 sendMessage(mBufferedScanMsg.remove()); 1926 } 1927 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 1928 } else if (!mIsFullScanOngoing) { 1929 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 1930 // buffer the scan request to make sure specified channels will be scanned eventually 1931 if (freqs == null) 1932 mBufferedScanMsg.clear(); 1933 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 1934 Message msg = obtainMessage(CMD_START_SCAN, 1935 message.arg1, message.arg2, bundle); 1936 mBufferedScanMsg.add(msg); 1937 } else { 1938 // if too many requests in buffer, combine them into a single full scan 1939 bundle = new Bundle(); 1940 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 1941 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1942 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 1943 mBufferedScanMsg.clear(); 1944 mBufferedScanMsg.add(msg); 1945 } 1946 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 1947 } else { 1948 // mIsScanOngoing and mIsFullScanOngoing 1949 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 1950 } 1951 } 1952 1953 1954 /** return true iff scan request is accepted */ 1955 private boolean startScanNative(int type, String freqs) { 1956 if (mWifiNative.scan(type, freqs)) { 1957 mIsScanOngoing = true; 1958 mIsFullScanOngoing = (freqs == null); 1959 lastScanFreqs = freqs; 1960 return true; 1961 } 1962 return false; 1963 } 1964 1965 /** 1966 * TODO: doc 1967 */ 1968 public void setSupplicantRunning(boolean enable) { 1969 if (enable) { 1970 sendMessage(CMD_START_SUPPLICANT); 1971 } else { 1972 sendMessage(CMD_STOP_SUPPLICANT); 1973 } 1974 } 1975 1976 /** 1977 * TODO: doc 1978 */ 1979 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 1980 if (enable) { 1981 sendMessage(CMD_START_AP, wifiConfig); 1982 } else { 1983 sendMessage(CMD_STOP_AP); 1984 } 1985 } 1986 1987 public void setWifiApConfiguration(WifiConfiguration config) { 1988 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 1989 } 1990 1991 public WifiConfiguration syncGetWifiApConfiguration() { 1992 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 1993 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 1994 resultMsg.recycle(); 1995 return ret; 1996 } 1997 1998 /** 1999 * TODO: doc 2000 */ 2001 public int syncGetWifiState() { 2002 return mWifiState.get(); 2003 } 2004 2005 /** 2006 * TODO: doc 2007 */ 2008 public String syncGetWifiStateByName() { 2009 switch (mWifiState.get()) { 2010 case WIFI_STATE_DISABLING: 2011 return "disabling"; 2012 case WIFI_STATE_DISABLED: 2013 return "disabled"; 2014 case WIFI_STATE_ENABLING: 2015 return "enabling"; 2016 case WIFI_STATE_ENABLED: 2017 return "enabled"; 2018 case WIFI_STATE_UNKNOWN: 2019 return "unknown state"; 2020 default: 2021 return "[invalid state]"; 2022 } 2023 } 2024 2025 /** 2026 * TODO: doc 2027 */ 2028 public int syncGetWifiApState() { 2029 return mWifiApState.get(); 2030 } 2031 2032 /** 2033 * TODO: doc 2034 */ 2035 public String syncGetWifiApStateByName() { 2036 switch (mWifiApState.get()) { 2037 case WIFI_AP_STATE_DISABLING: 2038 return "disabling"; 2039 case WIFI_AP_STATE_DISABLED: 2040 return "disabled"; 2041 case WIFI_AP_STATE_ENABLING: 2042 return "enabling"; 2043 case WIFI_AP_STATE_ENABLED: 2044 return "enabled"; 2045 case WIFI_AP_STATE_FAILED: 2046 return "failed"; 2047 default: 2048 return "[invalid state]"; 2049 } 2050 } 2051 2052 /** 2053 * Get status information for the current connection, if any. 2054 * @return a {@link WifiInfo} object containing information about the current connection 2055 * 2056 */ 2057 public WifiInfo syncRequestConnectionInfo() { 2058 return mWifiInfo; 2059 } 2060 2061 public DhcpResults syncGetDhcpResults() { 2062 synchronized (mDhcpResultsLock) { 2063 return new DhcpResults(mDhcpResults); 2064 } 2065 } 2066 2067 /** 2068 * TODO: doc 2069 */ 2070 public void setDriverStart(boolean enable) { 2071 if (enable) { 2072 sendMessage(CMD_START_DRIVER); 2073 } else { 2074 sendMessage(CMD_STOP_DRIVER); 2075 } 2076 } 2077 2078 /** 2079 * TODO: doc 2080 */ 2081 public void setOperationalMode(int mode) { 2082 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2083 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2084 } 2085 2086 /** 2087 * TODO: doc 2088 */ 2089 public List<ScanResult> syncGetScanResultsList() { 2090 synchronized (mScanResultCache) { 2091 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2092 for(ScanDetail result: mScanResults) { 2093 scanList.add(new ScanResult(result.getScanResult())); 2094 } 2095 return scanList; 2096 } 2097 } 2098 2099 public void disableEphemeralNetwork(String SSID) { 2100 if (SSID != null) { 2101 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2102 } 2103 } 2104 2105 /** 2106 * Get unsynchronized pointer to scan result list 2107 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2108 */ 2109 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2110 return mScanResults; 2111 } 2112 2113 /** 2114 * Disconnect from Access Point 2115 */ 2116 public void disconnectCommand() { 2117 sendMessage(CMD_DISCONNECT); 2118 } 2119 2120 public void disconnectCommand(int uid, int reason) { 2121 sendMessage(CMD_DISCONNECT, uid, reason); 2122 } 2123 2124 /** 2125 * Initiate a reconnection to AP 2126 */ 2127 public void reconnectCommand() { 2128 sendMessage(CMD_RECONNECT); 2129 } 2130 2131 /** 2132 * Initiate a re-association to AP 2133 */ 2134 public void reassociateCommand() { 2135 sendMessage(CMD_REASSOCIATE); 2136 } 2137 2138 /** 2139 * Reload networks and then reconnect; helps load correct data for TLS networks 2140 */ 2141 2142 public void reloadTlsNetworksAndReconnect() { 2143 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2144 } 2145 2146 /** 2147 * Add a network synchronously 2148 * 2149 * @return network id of the new network 2150 */ 2151 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2152 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2153 int result = resultMsg.arg1; 2154 resultMsg.recycle(); 2155 return result; 2156 } 2157 2158 /** 2159 * Get configured networks synchronously 2160 * @param channel 2161 * @return 2162 */ 2163 2164 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2165 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2166 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2167 resultMsg.recycle(); 2168 return result; 2169 } 2170 2171 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2172 Message resultMsg = channel.sendMessageSynchronously( 2173 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2174 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2175 resultMsg.recycle(); 2176 return result; 2177 } 2178 2179 2180 /** 2181 * Get connection statistics synchronously 2182 * @param channel 2183 * @return 2184 */ 2185 2186 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2187 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2188 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2189 resultMsg.recycle(); 2190 return result; 2191 } 2192 2193 /** 2194 * Get adaptors synchronously 2195 */ 2196 2197 public int syncGetSupportedFeatures(AsyncChannel channel) { 2198 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2199 int supportedFeatureSet = resultMsg.arg1; 2200 resultMsg.recycle(); 2201 return supportedFeatureSet; 2202 } 2203 2204 /** 2205 * Get link layers stats for adapter synchronously 2206 */ 2207 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2208 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2209 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2210 resultMsg.recycle(); 2211 return result; 2212 } 2213 2214 /** 2215 * Delete a network 2216 * 2217 * @param networkId id of the network to be removed 2218 */ 2219 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2220 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2221 boolean result = (resultMsg.arg1 != FAILURE); 2222 resultMsg.recycle(); 2223 return result; 2224 } 2225 2226 /** 2227 * Enable a network 2228 * 2229 * @param netId network id of the network 2230 * @param disableOthers true, if all other networks have to be disabled 2231 * @return {@code true} if the operation succeeds, {@code false} otherwise 2232 */ 2233 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2234 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2235 disableOthers ? 1 : 0); 2236 boolean result = (resultMsg.arg1 != FAILURE); 2237 resultMsg.recycle(); 2238 return result; 2239 } 2240 2241 /** 2242 * Disable a network 2243 * 2244 * @param netId network id of the network 2245 * @return {@code true} if the operation succeeds, {@code false} otherwise 2246 */ 2247 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2248 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2249 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2250 resultMsg.recycle(); 2251 return result; 2252 } 2253 2254 /** 2255 * Retrieves a WPS-NFC configuration token for the specified network 2256 * @return a hex string representation of the WPS-NFC configuration token 2257 */ 2258 public String syncGetWpsNfcConfigurationToken(int netId) { 2259 return mWifiNative.getNfcWpsConfigurationToken(netId); 2260 } 2261 2262 void enableBackgroundScan(boolean enable) { 2263 if (enable) { 2264 mWifiConfigStore.enableAllNetworks(); 2265 } 2266 mWifiNative.enableBackgroundScan(enable); 2267 } 2268 2269 /** 2270 * Blacklist a BSSID. This will avoid the AP if there are 2271 * alternate APs to connect 2272 * 2273 * @param bssid BSSID of the network 2274 */ 2275 public void addToBlacklist(String bssid) { 2276 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2277 } 2278 2279 /** 2280 * Clear the blacklist list 2281 * 2282 */ 2283 public void clearBlacklist() { 2284 sendMessage(CMD_CLEAR_BLACKLIST); 2285 } 2286 2287 public void enableRssiPolling(boolean enabled) { 2288 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2289 } 2290 2291 public void enableAllNetworks() { 2292 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2293 } 2294 2295 /** 2296 * Start filtering Multicast v4 packets 2297 */ 2298 public void startFilteringMulticastV4Packets() { 2299 mFilteringMulticastV4Packets.set(true); 2300 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2301 } 2302 2303 /** 2304 * Stop filtering Multicast v4 packets 2305 */ 2306 public void stopFilteringMulticastV4Packets() { 2307 mFilteringMulticastV4Packets.set(false); 2308 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2309 } 2310 2311 /** 2312 * Start filtering Multicast v4 packets 2313 */ 2314 public void startFilteringMulticastV6Packets() { 2315 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2316 } 2317 2318 /** 2319 * Stop filtering Multicast v4 packets 2320 */ 2321 public void stopFilteringMulticastV6Packets() { 2322 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2323 } 2324 2325 /** 2326 * Set high performance mode of operation. 2327 * Enabling would set active power mode and disable suspend optimizations; 2328 * disabling would set auto power mode and enable suspend optimizations 2329 * @param enable true if enable, false otherwise 2330 */ 2331 public void setHighPerfModeEnabled(boolean enable) { 2332 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2333 } 2334 2335 /** 2336 * Set the country code 2337 * @param countryCode following ISO 3166 format 2338 * @param persist {@code true} if the setting should be remembered. 2339 */ 2340 public synchronized void setCountryCode(String countryCode, boolean persist) { 2341 // If it's a good country code, apply after the current 2342 // wifi connection is terminated; ignore resetting of code 2343 // for now (it is unclear what the chipset should do when 2344 // country code is reset) 2345 2346 if (TextUtils.isEmpty(countryCode)) { 2347 log("Ignoring resetting of country code"); 2348 } else { 2349 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2350 // else only when the new country code is different from the current one to set 2351 int countryCodeSequence = mCountryCodeSequence.get(); 2352 if(countryCodeSequence == 0 || countryCode.equals(mSetCountryCode) == false) { 2353 2354 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2355 mSetCountryCode = countryCode; 2356 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2357 countryCode); 2358 } 2359 2360 if (persist) { 2361 Settings.Global.putString(mContext.getContentResolver(), 2362 Settings.Global.WIFI_COUNTRY_CODE, 2363 countryCode); 2364 } 2365 } 2366 } 2367 2368 /** 2369 * Get the country code 2370 * @param countryCode following ISO 3166 format 2371 */ 2372 public String getCountryCode() { 2373 return mSetCountryCode; 2374 } 2375 2376 2377 /** 2378 * Set the operational frequency band 2379 * @param band 2380 * @param persist {@code true} if the setting should be remembered. 2381 */ 2382 public void setFrequencyBand(int band, boolean persist) { 2383 if (persist) { 2384 Settings.Global.putInt(mContext.getContentResolver(), 2385 Settings.Global.WIFI_FREQUENCY_BAND, 2386 band); 2387 } 2388 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2389 } 2390 2391 /** 2392 * Enable TDLS for a specific MAC address 2393 */ 2394 public void enableTdls(String remoteMacAddress, boolean enable) { 2395 int enabler = enable ? 1 : 0; 2396 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2397 } 2398 2399 /** 2400 * Returns the operational frequency band 2401 */ 2402 public int getFrequencyBand() { 2403 return mFrequencyBand.get(); 2404 } 2405 2406 /** 2407 * Returns the wifi configuration file 2408 */ 2409 public String getConfigFile() { 2410 return mWifiConfigStore.getConfigFile(); 2411 } 2412 2413 /** 2414 * Send a message indicating bluetooth adapter connection state changed 2415 */ 2416 public void sendBluetoothAdapterStateChange(int state) { 2417 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2418 } 2419 2420 /** 2421 * Save configuration on supplicant 2422 * 2423 * @return {@code true} if the operation succeeds, {@code false} otherwise 2424 * 2425 * TODO: deprecate this 2426 */ 2427 public boolean syncSaveConfig(AsyncChannel channel) { 2428 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2429 boolean result = (resultMsg.arg1 != FAILURE); 2430 resultMsg.recycle(); 2431 return result; 2432 } 2433 2434 public void updateBatteryWorkSource(WorkSource newSource) { 2435 synchronized (mRunningWifiUids) { 2436 try { 2437 if (newSource != null) { 2438 mRunningWifiUids.set(newSource); 2439 } 2440 if (mIsRunning) { 2441 if (mReportedRunning) { 2442 // If the work source has changed since last time, need 2443 // to remove old work from battery stats. 2444 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2445 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2446 mRunningWifiUids); 2447 mLastRunningWifiUids.set(mRunningWifiUids); 2448 } 2449 } else { 2450 // Now being started, report it. 2451 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2452 mLastRunningWifiUids.set(mRunningWifiUids); 2453 mReportedRunning = true; 2454 } 2455 } else { 2456 if (mReportedRunning) { 2457 // Last reported we were running, time to stop. 2458 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2459 mLastRunningWifiUids.clear(); 2460 mReportedRunning = false; 2461 } 2462 } 2463 mWakeLock.setWorkSource(newSource); 2464 } catch (RemoteException ignore) { 2465 } 2466 } 2467 } 2468 2469 @Override 2470 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2471 super.dump(fd, pw, args); 2472 mSupplicantStateTracker.dump(fd, pw, args); 2473 pw.println("mLinkProperties " + mLinkProperties); 2474 pw.println("mWifiInfo " + mWifiInfo); 2475 pw.println("mDhcpResults " + mDhcpResults); 2476 pw.println("mNetworkInfo " + mNetworkInfo); 2477 pw.println("mLastSignalLevel " + mLastSignalLevel); 2478 pw.println("mLastBssid " + mLastBssid); 2479 pw.println("mLastNetworkId " + mLastNetworkId); 2480 pw.println("mOperationalMode " + mOperationalMode); 2481 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2482 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2483 pw.println("Supplicant status " + mWifiNative.status(true)); 2484 pw.println("mEnableBackgroundScan " + mEnableBackgroundScan); 2485 pw.println("mSetCountryCode " + mSetCountryCode); 2486 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2487 mNetworkFactory.dump(fd, pw, args); 2488 mUntrustedNetworkFactory.dump(fd, pw, args); 2489 pw.println(); 2490 mWifiConfigStore.dump(fd, pw, args); 2491 } 2492 2493 /********************************************************* 2494 * Internal private functions 2495 ********************************************************/ 2496 2497 private void logStateAndMessage(Message message, String state) { 2498 messageHandlingStatus = 0; 2499 if (mLogMessages) { 2500 //long now = SystemClock.elapsedRealtimeNanos(); 2501 //String ts = String.format("[%,d us]", now/1000); 2502 2503 loge( " " + state + " " + getLogRecString(message)); 2504 } 2505 } 2506 2507 /** 2508 * helper, prints the milli time since boot wi and w/o suspended time 2509 */ 2510 String printTime() { 2511 StringBuilder sb = new StringBuilder(); 2512 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2513 sb.append("/").append(SystemClock.elapsedRealtime()); 2514 return sb.toString(); 2515 } 2516 2517 /** 2518 * Return the additional string to be logged by LogRec, default 2519 * 2520 * @param msg that was processed 2521 * @return information to be logged as a String 2522 */ 2523 protected String getLogRecString(Message msg) { 2524 WifiConfiguration config; 2525 Long now; 2526 String report; 2527 String key; 2528 StringBuilder sb = new StringBuilder(); 2529 if (mScreenOn) { 2530 sb.append("!"); 2531 } 2532 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2533 sb.append("(").append(messageHandlingStatus).append(")"); 2534 } 2535 sb.append(smToString(msg)); 2536 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2537 sb.append(" uid=" + msg.sendingUid); 2538 } 2539 switch (msg.what) { 2540 case CMD_START_SCAN: 2541 now = System.currentTimeMillis(); 2542 sb.append(" "); 2543 sb.append(Integer.toString(msg.arg1)); 2544 sb.append(" "); 2545 sb.append(Integer.toString(msg.arg2)); 2546 sb.append(" ic="); 2547 sb.append(Integer.toString(sScanAlarmIntentCount)); 2548 if (msg.obj != null) { 2549 Bundle bundle = (Bundle)msg.obj; 2550 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2551 if (request != 0) { 2552 sb.append(" proc(ms):").append(now - request); 2553 } 2554 } 2555 if (mIsScanOngoing) sb.append(" onGoing"); 2556 if (mIsFullScanOngoing) sb.append(" full"); 2557 if (lastStartScanTimeStamp != 0) { 2558 sb.append(" started:").append(lastStartScanTimeStamp); 2559 sb.append(",").append(now - lastStartScanTimeStamp); 2560 } 2561 if (lastScanDuration != 0) { 2562 sb.append(" dur:").append(lastScanDuration); 2563 } 2564 sb.append(" cnt=").append(mDelayedScanCounter); 2565 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2566 sb.append(" f=").append(mWifiInfo.getFrequency()); 2567 sb.append(" sc=").append(mWifiInfo.score); 2568 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2569 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2570 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2571 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2572 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2573 if (lastScanFreqs != null) { 2574 sb.append(" list=").append(lastScanFreqs); 2575 } else { 2576 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2577 } 2578 report = reportOnTime(); 2579 if (report != null) { 2580 sb.append(" ").append(report); 2581 } 2582 break; 2583 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2584 sb.append(" "); 2585 sb.append(Integer.toString(msg.arg1)); 2586 sb.append(" "); 2587 sb.append(Integer.toString(msg.arg2)); 2588 sb.append(printTime()); 2589 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2590 if (stateChangeResult != null) { 2591 sb.append(stateChangeResult.toString()); 2592 } 2593 break; 2594 case WifiManager.SAVE_NETWORK: 2595 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2596 sb.append(" "); 2597 sb.append(Integer.toString(msg.arg1)); 2598 sb.append(" "); 2599 sb.append(Integer.toString(msg.arg2)); 2600 if (lastSavedConfigurationAttempt != null) { 2601 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2602 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2603 if (lastSavedConfigurationAttempt.hiddenSSID) { 2604 sb.append(" hidden"); 2605 } 2606 if (lastSavedConfigurationAttempt.preSharedKey != null 2607 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2608 sb.append(" hasPSK"); 2609 } 2610 if (lastSavedConfigurationAttempt.ephemeral) { 2611 sb.append(" ephemeral"); 2612 } 2613 if (lastSavedConfigurationAttempt.selfAdded) { 2614 sb.append(" selfAdded"); 2615 } 2616 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2617 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2618 } 2619 break; 2620 case WifiManager.FORGET_NETWORK: 2621 sb.append(" "); 2622 sb.append(Integer.toString(msg.arg1)); 2623 sb.append(" "); 2624 sb.append(Integer.toString(msg.arg2)); 2625 if (lastForgetConfigurationAttempt != null) { 2626 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2627 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2628 if (lastForgetConfigurationAttempt.hiddenSSID) { 2629 sb.append(" hidden"); 2630 } 2631 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2632 sb.append(" hasPSK"); 2633 } 2634 if (lastForgetConfigurationAttempt.ephemeral) { 2635 sb.append(" ephemeral"); 2636 } 2637 if (lastForgetConfigurationAttempt.selfAdded) { 2638 sb.append(" selfAdded"); 2639 } 2640 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2641 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2642 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2643 } 2644 break; 2645 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2646 sb.append(" "); 2647 sb.append(Integer.toString(msg.arg1)); 2648 sb.append(" "); 2649 sb.append(Integer.toString(msg.arg2)); 2650 String bssid = (String)msg.obj; 2651 if (bssid != null && bssid.length()>0) { 2652 sb.append(" "); 2653 sb.append(bssid); 2654 } 2655 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2656 sb.append(printTime()); 2657 break; 2658 case WifiMonitor.SCAN_RESULTS_EVENT: 2659 sb.append(" "); 2660 sb.append(Integer.toString(msg.arg1)); 2661 sb.append(" "); 2662 sb.append(Integer.toString(msg.arg2)); 2663 if (mScanResults != null) { 2664 sb.append(" found="); 2665 sb.append(mScanResults.size()); 2666 } 2667 sb.append(" known=").append(mNumScanResultsKnown); 2668 sb.append(" got=").append(mNumScanResultsReturned); 2669 if (lastScanDuration != 0) { 2670 sb.append(" dur:").append(lastScanDuration); 2671 } 2672 if (mOnTime != 0) { 2673 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2674 sb.append(",").append(mOnTime); 2675 } 2676 if (mTxTime != 0) { 2677 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2678 sb.append(",").append(mTxTime); 2679 } 2680 if (mRxTime != 0) { 2681 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2682 sb.append(",").append(mRxTime); 2683 } 2684 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2685 sb.append(String.format(" con=%d", mConnectionRequests)); 2686 key = mWifiConfigStore.getLastSelectedConfiguration(); 2687 if (key != null) { 2688 sb.append(" last=").append(key); 2689 } 2690 break; 2691 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2692 sb.append(" "); 2693 sb.append(Integer.toString(msg.arg1)); 2694 sb.append(" "); 2695 sb.append(Integer.toString(msg.arg2)); 2696 sb.append(" ").append(mLastBssid); 2697 sb.append(" nid=").append(mLastNetworkId); 2698 config = getCurrentWifiConfiguration(); 2699 if (config != null) { 2700 sb.append(" ").append(config.configKey()); 2701 } 2702 sb.append(printTime()); 2703 key = mWifiConfigStore.getLastSelectedConfiguration(); 2704 if (key != null) { 2705 sb.append(" last=").append(key); 2706 } 2707 break; 2708 case CMD_TARGET_BSSID: 2709 case CMD_ASSOCIATED_BSSID: 2710 sb.append(" "); 2711 sb.append(Integer.toString(msg.arg1)); 2712 sb.append(" "); 2713 sb.append(Integer.toString(msg.arg2)); 2714 if (msg.obj != null) { 2715 sb.append(" BSSID=").append((String)msg.obj); 2716 } 2717 if (mTargetRoamBSSID != null) { 2718 sb.append(" Target=").append(mTargetRoamBSSID); 2719 } 2720 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2721 sb.append(printTime()); 2722 break; 2723 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2724 if (msg.obj != null) { 2725 sb.append(" ").append((String)msg.obj); 2726 } 2727 sb.append(" nid=").append(msg.arg1); 2728 sb.append(" reason=").append(msg.arg2); 2729 if (mLastBssid != null) { 2730 sb.append(" lastbssid=").append(mLastBssid); 2731 } 2732 if (mWifiInfo.getFrequency() != -1) { 2733 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2734 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2735 } 2736 if (linkDebouncing) { 2737 sb.append(" debounce"); 2738 } 2739 sb.append(printTime()); 2740 break; 2741 case WifiMonitor.SSID_TEMP_DISABLED: 2742 case WifiMonitor.SSID_REENABLED: 2743 sb.append(" nid=").append(msg.arg1); 2744 if (msg.obj != null) { 2745 sb.append(" ").append((String)msg.obj); 2746 } 2747 config = getCurrentWifiConfiguration(); 2748 if (config != null) { 2749 sb.append(" cur=").append(config.configKey()); 2750 sb.append(" ajst=").append(config.autoJoinStatus); 2751 if (config.selfAdded) { 2752 sb.append(" selfAdded"); 2753 } 2754 if (config.status != 0) { 2755 sb.append(" st=").append(config.status); 2756 sb.append(" rs=").append(config.disableReason); 2757 } 2758 if (config.lastConnected != 0) { 2759 now = System.currentTimeMillis(); 2760 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2761 } 2762 if (mLastBssid != null) { 2763 sb.append(" lastbssid=").append(mLastBssid); 2764 } 2765 if (mWifiInfo.getFrequency() != -1) { 2766 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2767 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2768 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2769 } 2770 } 2771 sb.append(printTime()); 2772 break; 2773 case CMD_RSSI_POLL: 2774 case CMD_UNWANTED_NETWORK: 2775 case WifiManager.RSSI_PKTCNT_FETCH: 2776 sb.append(" "); 2777 sb.append(Integer.toString(msg.arg1)); 2778 sb.append(" "); 2779 sb.append(Integer.toString(msg.arg2)); 2780 if (mWifiInfo.getSSID() != null) 2781 if (mWifiInfo.getSSID() != null) 2782 sb.append(" ").append(mWifiInfo.getSSID()); 2783 if (mWifiInfo.getBSSID() != null) 2784 sb.append(" ").append(mWifiInfo.getBSSID()); 2785 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2786 sb.append(" f=").append(mWifiInfo.getFrequency()); 2787 sb.append(" sc=").append(mWifiInfo.score); 2788 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2789 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2790 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2791 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2792 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2793 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2794 report = reportOnTime(); 2795 if (report != null) { 2796 sb.append(" ").append(report); 2797 } 2798 if (wifiScoringReport != null) { 2799 sb.append(wifiScoringReport); 2800 } 2801 break; 2802 case CMD_AUTO_CONNECT: 2803 case WifiManager.CONNECT_NETWORK: 2804 sb.append(" "); 2805 sb.append(Integer.toString(msg.arg1)); 2806 sb.append(" "); 2807 sb.append(Integer.toString(msg.arg2)); 2808 config = (WifiConfiguration) msg.obj; 2809 if (config != null) { 2810 sb.append(" ").append(config.configKey()); 2811 if (config.visibility != null) { 2812 sb.append(" ").append(config.visibility.toString()); 2813 } 2814 } 2815 if (mTargetRoamBSSID != null) { 2816 sb.append(" ").append(mTargetRoamBSSID); 2817 } 2818 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2819 sb.append(printTime()); 2820 config = getCurrentWifiConfiguration(); 2821 if (config != null) { 2822 sb.append(config.configKey()); 2823 if (config.visibility != null) { 2824 sb.append(" ").append(config.visibility.toString()); 2825 } 2826 } 2827 break; 2828 case CMD_AUTO_ROAM: 2829 sb.append(" "); 2830 sb.append(Integer.toString(msg.arg1)); 2831 sb.append(" "); 2832 sb.append(Integer.toString(msg.arg2)); 2833 ScanResult result = (ScanResult)msg.obj; 2834 if (result != null) { 2835 now = System.currentTimeMillis(); 2836 sb.append(" bssid=").append(result.BSSID); 2837 sb.append(" rssi=").append(result.level); 2838 sb.append(" freq=").append(result.frequency); 2839 if (result.seen > 0 && result.seen < now) { 2840 sb.append(" seen=").append(now - result.seen); 2841 } else { 2842 // Somehow the timestamp for this scan result is inconsistent 2843 sb.append(" !seen=").append(result.seen); 2844 } 2845 } 2846 if (mTargetRoamBSSID != null) { 2847 sb.append(" ").append(mTargetRoamBSSID); 2848 } 2849 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2850 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 2851 sb.append(printTime()); 2852 break; 2853 case CMD_ADD_OR_UPDATE_NETWORK: 2854 sb.append(" "); 2855 sb.append(Integer.toString(msg.arg1)); 2856 sb.append(" "); 2857 sb.append(Integer.toString(msg.arg2)); 2858 if (msg.obj != null) { 2859 config = (WifiConfiguration)msg.obj; 2860 sb.append(" ").append(config.configKey()); 2861 sb.append(" prio=").append(config.priority); 2862 sb.append(" status=").append(config.status); 2863 if (config.BSSID != null) { 2864 sb.append(" ").append(config.BSSID); 2865 } 2866 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 2867 if (curConfig != null) { 2868 if (curConfig.configKey().equals(config.configKey())) { 2869 sb.append(" is current"); 2870 } else { 2871 sb.append(" current=").append(curConfig.configKey()); 2872 sb.append(" prio=").append(curConfig.priority); 2873 sb.append(" status=").append(curConfig.status); 2874 } 2875 } 2876 } 2877 break; 2878 case WifiManager.DISABLE_NETWORK: 2879 case CMD_ENABLE_NETWORK: 2880 sb.append(" "); 2881 sb.append(Integer.toString(msg.arg1)); 2882 sb.append(" "); 2883 sb.append(Integer.toString(msg.arg2)); 2884 key = mWifiConfigStore.getLastSelectedConfiguration(); 2885 if (key != null) { 2886 sb.append(" last=").append(key); 2887 } 2888 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 2889 if (config != null && (key == null || !config.configKey().equals(key))) { 2890 sb.append(" target=").append(key); 2891 } 2892 break; 2893 case CMD_GET_CONFIGURED_NETWORKS: 2894 sb.append(" "); 2895 sb.append(Integer.toString(msg.arg1)); 2896 sb.append(" "); 2897 sb.append(Integer.toString(msg.arg2)); 2898 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 2899 break; 2900 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 2901 sb.append(" "); 2902 sb.append(Integer.toString(msg.arg1)); 2903 sb.append(" "); 2904 sb.append(Integer.toString(msg.arg2)); 2905 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2906 sb.append(",").append(mWifiInfo.txBad); 2907 sb.append(",").append(mWifiInfo.txRetries); 2908 break; 2909 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 2910 sb.append(" "); 2911 sb.append(Integer.toString(msg.arg1)); 2912 sb.append(" "); 2913 sb.append(Integer.toString(msg.arg2)); 2914 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 2915 sb.append(" OK "); 2916 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 2917 sb.append(" FAIL "); 2918 } 2919 if (mLinkProperties != null) { 2920 if (mLinkProperties.hasIPv4Address()) { 2921 sb.append(" v4"); 2922 } 2923 if (mLinkProperties.hasGlobalIPv6Address()) { 2924 sb.append(" v6"); 2925 } 2926 if (mLinkProperties.hasIPv4DefaultRoute()) { 2927 sb.append(" v4r"); 2928 } 2929 if (mLinkProperties.hasIPv6DefaultRoute()) { 2930 sb.append(" v6r"); 2931 } 2932 if (mLinkProperties.hasIPv4DnsServer()) { 2933 sb.append(" v4dns"); 2934 } 2935 if (mLinkProperties.hasIPv6DnsServer()) { 2936 sb.append(" v6dns"); 2937 } 2938 } 2939 break; 2940 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 2941 sb.append(" "); 2942 sb.append(Integer.toString(msg.arg1)); 2943 sb.append(" "); 2944 sb.append(Integer.toString(msg.arg2)); 2945 if (msg.obj != null) { 2946 NetworkInfo info = (NetworkInfo)msg.obj; 2947 NetworkInfo.State state = info.getState(); 2948 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 2949 if (state != null) { 2950 sb.append(" st=").append(state); 2951 } 2952 if (detailedState != null) { 2953 sb.append("/").append(detailedState); 2954 } 2955 } 2956 break; 2957 case CMD_IP_CONFIGURATION_LOST: 2958 int count = -1; 2959 WifiConfiguration c = getCurrentWifiConfiguration(); 2960 if (c != null) count = c.numIpConfigFailures; 2961 sb.append(" "); 2962 sb.append(Integer.toString(msg.arg1)); 2963 sb.append(" "); 2964 sb.append(Integer.toString(msg.arg2)); 2965 sb.append(" failures: "); 2966 sb.append(Integer.toString(count)); 2967 sb.append("/"); 2968 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 2969 if (mWifiInfo.getBSSID() != null) { 2970 sb.append(" ").append(mWifiInfo.getBSSID()); 2971 } 2972 if (c != null) { 2973 if (c.scanResultCache != null) { 2974 for (ScanResult r : c.scanResultCache.values()) { 2975 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 2976 sb.append(" ipfail=").append(r.numIpConfigFailures); 2977 sb.append(",st=").append(r.autoJoinStatus); 2978 } 2979 } 2980 } 2981 sb.append(" -> ajst=").append(c.autoJoinStatus); 2982 sb.append(" ").append(c.disableReason); 2983 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2984 sb.append(",").append(mWifiInfo.txBad); 2985 sb.append(",").append(mWifiInfo.txRetries); 2986 } 2987 sb.append(printTime()); 2988 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2989 break; 2990 case CMD_UPDATE_LINKPROPERTIES: 2991 sb.append(" "); 2992 sb.append(Integer.toString(msg.arg1)); 2993 sb.append(" "); 2994 sb.append(Integer.toString(msg.arg2)); 2995 if (mLinkProperties != null) { 2996 if (mLinkProperties.hasIPv4Address()) { 2997 sb.append(" v4"); 2998 } 2999 if (mLinkProperties.hasGlobalIPv6Address()) { 3000 sb.append(" v6"); 3001 } 3002 if (mLinkProperties.hasIPv4DefaultRoute()) { 3003 sb.append(" v4r"); 3004 } 3005 if (mLinkProperties.hasIPv6DefaultRoute()) { 3006 sb.append(" v6r"); 3007 } 3008 if (mLinkProperties.hasIPv4DnsServer()) { 3009 sb.append(" v4dns"); 3010 } 3011 if (mLinkProperties.hasIPv6DnsServer()) { 3012 sb.append(" v6dns"); 3013 } 3014 } 3015 break; 3016 case CMD_SET_COUNTRY_CODE: 3017 sb.append(" "); 3018 sb.append(Integer.toString(msg.arg1)); 3019 sb.append(" "); 3020 sb.append(Integer.toString(msg.arg2)); 3021 if (msg.obj != null) { 3022 sb.append(" ").append((String)msg.obj); 3023 } 3024 break; 3025 case CMD_ROAM_WATCHDOG_TIMER: 3026 sb.append(" "); 3027 sb.append(Integer.toString(msg.arg1)); 3028 sb.append(" "); 3029 sb.append(Integer.toString(msg.arg2)); 3030 sb.append(" cur=").append(roamWatchdogCount); 3031 break; 3032 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3033 sb.append(" "); 3034 sb.append(Integer.toString(msg.arg1)); 3035 sb.append(" "); 3036 sb.append(Integer.toString(msg.arg2)); 3037 sb.append(" cur=").append(disconnectingWatchdogCount); 3038 break; 3039 default: 3040 sb.append(" "); 3041 sb.append(Integer.toString(msg.arg1)); 3042 sb.append(" "); 3043 sb.append(Integer.toString(msg.arg2)); 3044 break; 3045 } 3046 3047 return sb.toString(); 3048 } 3049 3050 private void handleScreenStateChanged(boolean screenOn, boolean startBackgroundScanIfNeeded) { 3051 mScreenOn = screenOn; 3052 if (PDBG) { 3053 loge(" handleScreenStateChanged Enter: screenOn=" + screenOn 3054 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3055 + " state " + getCurrentState().getName() 3056 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3057 } 3058 enableRssiPolling(screenOn); 3059 if (screenOn) enableAllNetworks(); 3060 if (mUserWantsSuspendOpt.get()) { 3061 if (screenOn) { 3062 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3063 } else { 3064 // Allow 2s for suspend optimizations to be set 3065 mSuspendWakeLock.acquire(2000); 3066 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3067 } 3068 } 3069 mScreenBroadcastReceived.set(true); 3070 3071 getWifiLinkLayerStats(false); 3072 mOnTimeScreenStateChange = mOnTime; 3073 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3074 mEnableBackgroundScan = false; 3075 cancelDelayedScan(); 3076 3077 if (screenOn) { 3078 setScanAlarm(false); 3079 clearBlacklist(); 3080 3081 fullBandConnectedTimeIntervalMilli = mWifiConfigStore.associatedPartialScanPeriodMilli.get(); 3082 // In either Disconnectedstate or ConnectedState, 3083 // start the scan alarm so as to enable autojoin 3084 if (getCurrentState() == mConnectedState 3085 && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 3086 // Scan after 500ms 3087 startDelayedScan(500, null, null); 3088 } else if (getCurrentState() == mDisconnectedState) { 3089 // Scan after 200ms 3090 startDelayedScan(200, null, null); 3091 } 3092 } else if (startBackgroundScanIfNeeded) { 3093 // Screen Off and Disconnected and chipset doesn't support scan offload 3094 // => start scan alarm 3095 // Screen Off and Disconnected and chipset does support scan offload 3096 // => will use scan offload (i.e. background scan) 3097 if (!mBackgroundScanSupported) { 3098 setScanAlarm(true); 3099 } else { 3100 mEnableBackgroundScan = true; 3101 } 3102 } 3103 if (DBG) logd("backgroundScan enabled=" + mEnableBackgroundScan 3104 + " startBackgroundScanIfNeeded:" + startBackgroundScanIfNeeded); 3105 if (startBackgroundScanIfNeeded) { 3106 // to scan for them in background, we need all networks enabled 3107 enableBackgroundScan(mEnableBackgroundScan); 3108 } 3109 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3110 } 3111 3112 private void checkAndSetConnectivityInstance() { 3113 if (mCm == null) { 3114 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3115 } 3116 } 3117 3118 private boolean startTethering(ArrayList<String> available) { 3119 3120 boolean wifiAvailable = false; 3121 3122 checkAndSetConnectivityInstance(); 3123 3124 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3125 3126 for (String intf : available) { 3127 for (String regex : wifiRegexs) { 3128 if (intf.matches(regex)) { 3129 3130 InterfaceConfiguration ifcg = null; 3131 try { 3132 ifcg = mNwService.getInterfaceConfig(intf); 3133 if (ifcg != null) { 3134 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3135 ifcg.setLinkAddress(new LinkAddress( 3136 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3137 ifcg.setInterfaceUp(); 3138 3139 mNwService.setInterfaceConfig(intf, ifcg); 3140 } 3141 } catch (Exception e) { 3142 loge("Error configuring interface " + intf + ", :" + e); 3143 return false; 3144 } 3145 3146 if(mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3147 loge("Error tethering on " + intf); 3148 return false; 3149 } 3150 mTetherInterfaceName = intf; 3151 return true; 3152 } 3153 } 3154 } 3155 // We found no interfaces to tether 3156 return false; 3157 } 3158 3159 private void stopTethering() { 3160 3161 checkAndSetConnectivityInstance(); 3162 3163 /* Clear the interface config to allow dhcp correctly configure new 3164 ip settings */ 3165 InterfaceConfiguration ifcg = null; 3166 try { 3167 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3168 if (ifcg != null) { 3169 ifcg.setLinkAddress( 3170 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3171 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3172 } 3173 } catch (Exception e) { 3174 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3175 } 3176 3177 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3178 loge("Untether initiate failed!"); 3179 } 3180 } 3181 3182 private boolean isWifiTethered(ArrayList<String> active) { 3183 3184 checkAndSetConnectivityInstance(); 3185 3186 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3187 for (String intf : active) { 3188 for (String regex : wifiRegexs) { 3189 if (intf.matches(regex)) { 3190 return true; 3191 } 3192 } 3193 } 3194 // We found no interfaces that are tethered 3195 return false; 3196 } 3197 3198 /** 3199 * Set the country code from the system setting value, if any. 3200 */ 3201 private void setCountryCode() { 3202 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 3203 Settings.Global.WIFI_COUNTRY_CODE); 3204 if (countryCode != null && !countryCode.isEmpty()) { 3205 setCountryCode(countryCode, false); 3206 } else { 3207 //use driver default 3208 } 3209 } 3210 3211 /** 3212 * Set the frequency band from the system setting value, if any. 3213 */ 3214 private void setFrequencyBand() { 3215 int band = Settings.Global.getInt(mContext.getContentResolver(), 3216 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3217 setFrequencyBand(band, false); 3218 } 3219 3220 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3221 if (DBG) { 3222 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3223 + " -want " + mUserWantsSuspendOpt.get() 3224 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3225 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 3226 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 3227 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 3228 } 3229 //mWifiNative.setSuspendOptimizations(enabled); 3230 3231 if (enabled) { 3232 mSuspendOptNeedsDisabled &= ~reason; 3233 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3234 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3235 if (DBG) { 3236 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3237 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3238 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 3239 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 3240 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 3241 } 3242 mWifiNative.setSuspendOptimizations(true); 3243 } 3244 } else { 3245 mSuspendOptNeedsDisabled |= reason; 3246 mWifiNative.setSuspendOptimizations(false); 3247 } 3248 } 3249 3250 private void setSuspendOptimizations(int reason, boolean enabled) { 3251 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3252 if (enabled) { 3253 mSuspendOptNeedsDisabled &= ~reason; 3254 } else { 3255 mSuspendOptNeedsDisabled |= reason; 3256 } 3257 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3258 } 3259 3260 private void setWifiState(int wifiState) { 3261 final int previousWifiState = mWifiState.get(); 3262 3263 try { 3264 if (wifiState == WIFI_STATE_ENABLED) { 3265 mBatteryStats.noteWifiOn(); 3266 } else if (wifiState == WIFI_STATE_DISABLED) { 3267 mBatteryStats.noteWifiOff(); 3268 } 3269 } catch (RemoteException e) { 3270 loge("Failed to note battery stats in wifi"); 3271 } 3272 3273 mWifiState.set(wifiState); 3274 3275 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3276 3277 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3278 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3279 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3280 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3281 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3282 } 3283 3284 private void setWifiApState(int wifiApState) { 3285 final int previousWifiApState = mWifiApState.get(); 3286 3287 try { 3288 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3289 mBatteryStats.noteWifiOn(); 3290 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3291 mBatteryStats.noteWifiOff(); 3292 } 3293 } catch (RemoteException e) { 3294 loge("Failed to note battery stats in wifi"); 3295 } 3296 3297 // Update state 3298 mWifiApState.set(wifiApState); 3299 3300 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3301 3302 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3303 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3304 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3305 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3306 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3307 } 3308 3309 /* 3310 void ageOutScanResults(int age) { 3311 synchronized(mScanResultCache) { 3312 // Trim mScanResults, which prevent WifiStateMachine to return 3313 // obsolete scan results to queriers 3314 long now = System.CurrentTimeMillis(); 3315 for (int i = 0; i < mScanResults.size(); i++) { 3316 ScanResult result = mScanResults.get(i); 3317 if ((result.seen > now || (now - result.seen) > age)) { 3318 mScanResults.remove(i); 3319 } 3320 } 3321 } 3322 }*/ 3323 3324 private static final String IE_STR = "ie="; 3325 private static final String ID_STR = "id="; 3326 private static final String BSSID_STR = "bssid="; 3327 private static final String FREQ_STR = "freq="; 3328 private static final String LEVEL_STR = "level="; 3329 private static final String TSF_STR = "tsf="; 3330 private static final String FLAGS_STR = "flags="; 3331 private static final String SSID_STR = "ssid="; 3332 private static final String DELIMITER_STR = "===="; 3333 private static final String END_STR = "####"; 3334 3335 int emptyScanResultCount = 0; 3336 3337 // Used for matching BSSID strings, at least one characteer must be a non-zero number 3338 private static Pattern mNotZero = Pattern.compile("[1-9a-fA-F]"); 3339 3340 /** 3341 * Format: 3342 * 3343 * id=1 3344 * bssid=68:7f:76:d7:1a:6e 3345 * freq=2412 3346 * level=-44 3347 * tsf=1344626243700342 3348 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3349 * ssid=zfdy 3350 * ==== 3351 * id=2 3352 * bssid=68:5f:74:d7:1a:6f 3353 * freq=5180 3354 * level=-73 3355 * tsf=1344626243700373 3356 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3357 * ssid=zuby 3358 * ==== 3359 */ 3360 private void setScanResults() { 3361 mNumScanResultsKnown = 0; 3362 mNumScanResultsReturned = 0; 3363 String bssid = ""; 3364 int level = 0; 3365 int freq = 0; 3366 long tsf = 0; 3367 String flags = ""; 3368 WifiSsid wifiSsid = null; 3369 String scanResults; 3370 String tmpResults; 3371 StringBuffer scanResultsBuf = new StringBuffer(); 3372 int sid = 0; 3373 3374 while (true) { 3375 tmpResults = mWifiNative.scanResults(sid); 3376 if (TextUtils.isEmpty(tmpResults)) break; 3377 scanResultsBuf.append(tmpResults); 3378 scanResultsBuf.append("\n"); 3379 String[] lines = tmpResults.split("\n"); 3380 sid = -1; 3381 for (int i=lines.length - 1; i >= 0; i--) { 3382 if (lines[i].startsWith(END_STR)) { 3383 break; 3384 } else if (lines[i].startsWith(ID_STR)) { 3385 try { 3386 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3387 } catch (NumberFormatException e) { 3388 // Nothing to do 3389 } 3390 break; 3391 } 3392 } 3393 if (sid == -1) break; 3394 } 3395 3396 // Age out scan results, we return all scan results found in the last 12 seconds, 3397 // and NOT all scan results since last scan. 3398 // ageOutScanResults(12000); 3399 3400 scanResults = scanResultsBuf.toString(); 3401 if (TextUtils.isEmpty(scanResults)) { 3402 emptyScanResultCount++; 3403 if (emptyScanResultCount > 10) { 3404 // If we got too many empty scan results, the current scan cache is stale, 3405 // hence clear it. 3406 mScanResults = new ArrayList<>(); 3407 } 3408 return; 3409 } 3410 3411 emptyScanResultCount = 0; 3412 3413 // note that all these splits and substrings keep references to the original 3414 // huge string buffer while the amount we really want is generally pretty small 3415 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3416 synchronized(mScanResultCache) { 3417 mScanResults = new ArrayList<>(); 3418 String[] lines = scanResults.split("\n"); 3419 final int bssidStrLen = BSSID_STR.length(); 3420 final int flagLen = FLAGS_STR.length(); 3421 String infoElements = null; 3422 List<String> anqpLines = null; 3423 3424 for (String line : lines) { 3425 if (line.startsWith(BSSID_STR)) { 3426 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3427 } else if (line.startsWith(FREQ_STR)) { 3428 try { 3429 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3430 } catch (NumberFormatException e) { 3431 freq = 0; 3432 } 3433 } else if (line.startsWith(LEVEL_STR)) { 3434 try { 3435 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3436 /* some implementations avoid negative values by adding 256 3437 * so we need to adjust for that here. 3438 */ 3439 if (level > 0) level -= 256; 3440 } catch(NumberFormatException e) { 3441 level = 0; 3442 } 3443 } else if (line.startsWith(TSF_STR)) { 3444 try { 3445 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3446 } catch (NumberFormatException e) { 3447 tsf = 0; 3448 } 3449 } else if (line.startsWith(FLAGS_STR)) { 3450 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3451 } else if (line.startsWith(SSID_STR)) { 3452 wifiSsid = WifiSsid.createFromAsciiEncoded( 3453 line.substring(SSID_STR.length())); 3454 } else if (line.startsWith(IE_STR)) { 3455 infoElements = line; 3456 } else if (SupplicantBridge.isAnqpAttribute(line)) { 3457 if (anqpLines == null) { 3458 anqpLines = new ArrayList<>(); 3459 } 3460 anqpLines.add(line); 3461 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3462 if (bssid != null) { 3463 try { 3464 NetworkDetail networkDetail = 3465 new NetworkDetail(bssid, infoElements, anqpLines, freq); 3466 3467 String xssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3468 if (!xssid.equals(networkDetail.getSSID())) { 3469 Log.d("HS2J", "Inconsistency: SSID: '" + xssid + 3470 "' vs '" + networkDetail.getSSID() + "': " + infoElements); 3471 } 3472 3473 if (networkDetail.hasInterworking()) { 3474 Log.d("HS2J", "HSNwk: '" + networkDetail); 3475 } 3476 3477 ScanDetail scanDetail = mScanResultCache.get(networkDetail); 3478 if (scanDetail != null) { 3479 scanDetail.updateResults(networkDetail, level, wifiSsid, xssid, 3480 flags, freq, tsf); 3481 } else { 3482 scanDetail = new ScanDetail(networkDetail, wifiSsid, bssid, 3483 flags, level, freq, tsf); 3484 mScanResultCache.put(networkDetail, scanDetail); 3485 } 3486 3487 mNumScanResultsReturned++; // Keep track of how many scan results we got 3488 // as part of this scan's processing 3489 mScanResults.add(scanDetail); 3490 } 3491 catch (IllegalArgumentException iae) { 3492 Log.d("HS2J", "Failed to parse information elements: " + iae); 3493 } 3494 } 3495 bssid = null; 3496 level = 0; 3497 freq = 0; 3498 tsf = 0; 3499 flags = ""; 3500 wifiSsid = null; 3501 infoElements = null; 3502 anqpLines = null; 3503 } 3504 } 3505 } 3506 3507 boolean attemptAutoJoin = true; 3508 SupplicantState state = mWifiInfo.getSupplicantState(); 3509 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 3510 if (getCurrentState() == mRoamingState 3511 || getCurrentState() == mObtainingIpState 3512 || getCurrentState() == mScanModeState 3513 || getCurrentState() == mDisconnectingState 3514 || (getCurrentState() == mConnectedState 3515 && !mWifiConfigStore.enableAutoJoinWhenAssociated.get()) 3516 || linkDebouncing 3517 || state == SupplicantState.ASSOCIATING 3518 || state == SupplicantState.AUTHENTICATING 3519 || state == SupplicantState.FOUR_WAY_HANDSHAKE 3520 || state == SupplicantState.GROUP_HANDSHAKE 3521 || (/* keep autojoin enabled if user has manually selected a wifi network, 3522 so as to make sure we reliably remain connected to this network */ 3523 mConnectionRequests == 0 && selection == null)) { 3524 // Dont attempt auto-joining again while we are already attempting to join 3525 // and/or obtaining Ip address 3526 attemptAutoJoin = false; 3527 } 3528 if (DBG) { 3529 if (selection == null) { 3530 selection = "<none>"; 3531 } 3532 loge("wifi setScanResults state" + getCurrentState() 3533 + " sup_state=" + state 3534 + " debouncing=" + linkDebouncing 3535 + " mConnectionRequests=" + mConnectionRequests 3536 + " selection=" + selection); 3537 } 3538 if (attemptAutoJoin) { 3539 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 3540 } 3541 // Loose last selected configuration if we have been disconnected for 5 minutes 3542 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 3543 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 3544 } 3545 3546 if (mWifiConfigStore.enableAutoJoinWhenAssociated.get()) { 3547 synchronized(mScanResultCache) { 3548 // AutoJoincontroller will directly acces the scan result list and update it with 3549 // ScanResult status 3550 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 3551 } 3552 } 3553 if (linkDebouncing) { 3554 // If debouncing, we dont re-select a SSID or BSSID hence 3555 // there is no need to call the network selection code 3556 // in WifiAutoJoinController, instead, 3557 // just try to reconnect to the same SSID by triggering a roam 3558 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3559 } 3560 } 3561 3562 /* 3563 * Fetch RSSI, linkspeed, and frequency on current connection 3564 */ 3565 private void fetchRssiLinkSpeedAndFrequencyNative() { 3566 int newRssi = -1; 3567 int newLinkSpeed = -1; 3568 int newFrequency = -1; 3569 3570 String signalPoll = mWifiNative.signalPoll(); 3571 3572 if (signalPoll != null) { 3573 String[] lines = signalPoll.split("\n"); 3574 for (String line : lines) { 3575 String[] prop = line.split("="); 3576 if (prop.length < 2) continue; 3577 try { 3578 if (prop[0].equals("RSSI")) { 3579 newRssi = Integer.parseInt(prop[1]); 3580 } else if (prop[0].equals("LINKSPEED")) { 3581 newLinkSpeed = Integer.parseInt(prop[1]); 3582 } else if (prop[0].equals("FREQUENCY")) { 3583 newFrequency = Integer.parseInt(prop[1]); 3584 } 3585 } catch (NumberFormatException e) { 3586 //Ignore, defaults on rssi and linkspeed are assigned 3587 } 3588 } 3589 } 3590 3591 if (PDBG) { 3592 loge("fetchRssiLinkSpeedAndFrequencyNative rssi=" 3593 + Integer.toString(newRssi) + " linkspeed=" 3594 + Integer.toString(newLinkSpeed)); 3595 } 3596 3597 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 3598 // screen out invalid values 3599 /* some implementations avoid negative values by adding 256 3600 * so we need to adjust for that here. 3601 */ 3602 if (newRssi > 0) newRssi -= 256; 3603 mWifiInfo.setRssi(newRssi); 3604 /* 3605 * Rather then sending the raw RSSI out every time it 3606 * changes, we precalculate the signal level that would 3607 * be displayed in the status bar, and only send the 3608 * broadcast if that much more coarse-grained number 3609 * changes. This cuts down greatly on the number of 3610 * broadcasts, at the cost of not informing others 3611 * interested in RSSI of all the changes in signal 3612 * level. 3613 */ 3614 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 3615 if (newSignalLevel != mLastSignalLevel) { 3616 sendRssiChangeBroadcast(newRssi); 3617 } 3618 mLastSignalLevel = newSignalLevel; 3619 } else { 3620 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 3621 } 3622 3623 if (newLinkSpeed != -1) { 3624 mWifiInfo.setLinkSpeed(newLinkSpeed); 3625 } 3626 if (newFrequency > 0) { 3627 if (ScanResult.is5GHz(newFrequency)) { 3628 mWifiConnectionStatistics.num5GhzConnected++; 3629 } 3630 if (ScanResult.is24GHz(newFrequency)) { 3631 mWifiConnectionStatistics.num24GhzConnected++; 3632 } 3633 mWifiInfo.setFrequency(newFrequency); 3634 } 3635 mWifiConfigStore.updateConfiguration(mWifiInfo); 3636 } 3637 3638 /** 3639 * Determine if we need to switch network: 3640 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 3641 * - match the uregncy of the switch versus the packet usage at the interface 3642 */ 3643 boolean shouldSwitchNetwork(int networkDelta) { 3644 int delta; 3645 if (networkDelta <= 0) { 3646 return false; 3647 } 3648 delta = networkDelta; 3649 if (mWifiInfo != null) { 3650 if (!mWifiConfigStore.enableAutoJoinWhenAssociated.get() 3651 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 3652 // If AutoJoin while associated is not enabled, 3653 // we should never switch network when already associated 3654 delta = -1000; 3655 } else { 3656 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 3657 // TODO: at the interface. We should also discriminate between ucast and mcast, 3658 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 3659 // TODO: broadcasts 3660 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 3661 delta -= 999; 3662 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 3663 delta -= 6; 3664 } 3665 loge("WifiStateMachine shouldSwitchNetwork " 3666 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3667 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3668 + " delta " + networkDelta + " -> " + delta); 3669 } 3670 } else { 3671 loge("WifiStateMachine shouldSwitchNetwork " 3672 + " delta " + networkDelta + " -> " + delta); 3673 } 3674 if (delta > 0) { 3675 return true; 3676 } 3677 return false; 3678 } 3679 3680 // Polling has completed, hence we wont have a score anymore 3681 private void cleanWifiScore() { 3682 mWifiInfo.txBadRate = 0; 3683 mWifiInfo.txSuccessRate = 0; 3684 mWifiInfo.txRetriesRate = 0; 3685 mWifiInfo.rxSuccessRate = 0; 3686 } 3687 3688 int mBadLinkspeedcount = 0; 3689 3690 // For debug, provide information about the last scoring operation 3691 String wifiScoringReport = null; 3692 private void calculateWifiScore(WifiLinkLayerStats stats) { 3693 StringBuilder sb = new StringBuilder(); 3694 3695 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 3696 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 3697 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 3698 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3699 < mWifiConfigStore.badLinkSpeed5); 3700 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 3701 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 3702 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3703 >= mWifiConfigStore.goodLinkSpeed5); 3704 3705 if (isBadLinkspeed) { 3706 if (mBadLinkspeedcount < 6) 3707 mBadLinkspeedcount++; 3708 } else { 3709 if (mBadLinkspeedcount > 0) 3710 mBadLinkspeedcount--; 3711 } 3712 3713 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 3714 if (isGoodLinkspeed) sb.append(" gl"); 3715 3716 /** 3717 * We want to make sure that we use the 24GHz RSSI thresholds if 3718 * there are 2.4GHz scan results 3719 * otherwise we end up lowering the score based on 5GHz values 3720 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 3721 * We also might unblacklist the configuation based on 2.4GHz 3722 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 3723 */ 3724 boolean use24Thresholds = false; 3725 boolean homeNetworkBoost = false; 3726 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 3727 if (currentConfiguration != null 3728 && currentConfiguration.scanResultCache != null) { 3729 currentConfiguration.setVisibility(12000); 3730 if (currentConfiguration.visibility != null) { 3731 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 3732 && currentConfiguration.visibility.rssi24 3733 >= (currentConfiguration.visibility.rssi5-2)) { 3734 use24Thresholds = true; 3735 } 3736 } 3737 if (currentConfiguration.scanResultCache.size() <= 6 3738 && currentConfiguration.allowedKeyManagement.cardinality() == 1 3739 && currentConfiguration.allowedKeyManagement. 3740 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 3741 // A PSK network with less than 6 known BSSIDs 3742 // This is most likely a home network and thus we want to stick to wifi more 3743 homeNetworkBoost = true; 3744 } 3745 } 3746 if (homeNetworkBoost) sb.append(" hn"); 3747 if (use24Thresholds) sb.append(" u24"); 3748 3749 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 3750 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 3751 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 3752 3753 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 3754 3755 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 3756 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 3757 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 3758 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 3759 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 3760 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 3761 3762 if (isBadRSSI) sb.append(" br"); 3763 if (isLowRSSI) sb.append(" lr"); 3764 if (isHighRSSI) sb.append(" hr"); 3765 3766 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 3767 if (currentConfiguration!= null && 3768 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 3769 if (isBadRSSI) { 3770 currentConfiguration.numTicksAtBadRSSI++; 3771 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 3772 // We remained associated for a compound amount of time while passing 3773 // traffic, hence loose the corresponding user triggered disabled stats 3774 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 3775 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 3776 } 3777 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3778 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3779 } 3780 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3781 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3782 } 3783 currentConfiguration.numTicksAtBadRSSI = 0; 3784 } 3785 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3786 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 3787 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3788 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3789 score = score -5; 3790 penalizedDueToUserTriggeredDisconnect = 1; 3791 sb.append(" p1"); 3792 } 3793 } else if (isLowRSSI) { 3794 currentConfiguration.numTicksAtLowRSSI++; 3795 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 3796 // We remained associated for a compound amount of time while passing 3797 // traffic, hence loose the corresponding user triggered disabled stats 3798 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3799 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3800 } 3801 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3802 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3803 } 3804 currentConfiguration.numTicksAtLowRSSI = 0; 3805 } 3806 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3807 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3808 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3809 score = score -5; 3810 penalizedDueToUserTriggeredDisconnect = 2; 3811 sb.append(" p2"); 3812 } 3813 } else if (!isHighRSSI) { 3814 currentConfiguration.numTicksAtNotHighRSSI++; 3815 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 3816 // We remained associated for a compound amount of time while passing 3817 // traffic, hence loose the corresponding user triggered disabled stats 3818 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3819 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3820 } 3821 currentConfiguration.numTicksAtNotHighRSSI = 0; 3822 } 3823 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3824 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3825 score = score -5; 3826 penalizedDueToUserTriggeredDisconnect = 3; 3827 sb.append(" p3"); 3828 } 3829 } 3830 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 3831 currentConfiguration.numTicksAtLowRSSI, 3832 currentConfiguration.numTicksAtNotHighRSSI)); 3833 } 3834 3835 if (PDBG) { 3836 String rssiStatus = ""; 3837 if (isBadRSSI) rssiStatus += " badRSSI "; 3838 else if (isHighRSSI) rssiStatus += " highRSSI "; 3839 else if (isLowRSSI) rssiStatus += " lowRSSI "; 3840 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 3841 loge("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 3842 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 3843 + " score=" + Integer.toString(mWifiInfo.score) 3844 + rssiStatus 3845 + " -> txbadrate=" + String.format( "%.2f", mWifiInfo.txBadRate ) 3846 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3847 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 3848 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3849 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 3850 } 3851 3852 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 3853 && (isBadRSSI || isLowRSSI)) { 3854 // Link is stuck 3855 if (mWifiInfo.linkStuckCount < 5) 3856 mWifiInfo.linkStuckCount += 1; 3857 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 3858 if (PDBG) loge(" bad link -> stuck count =" 3859 + Integer.toString(mWifiInfo.linkStuckCount)); 3860 } else if (mWifiInfo.txSuccessRate > 2 || mWifiInfo.txBadRate < 0.1) { 3861 if (mWifiInfo.linkStuckCount > 0) 3862 mWifiInfo.linkStuckCount -= 1; 3863 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 3864 if (PDBG) loge(" good link -> stuck count =" 3865 + Integer.toString(mWifiInfo.linkStuckCount)); 3866 } 3867 3868 sb.append(String.format(" [%d", score)); 3869 3870 if (mWifiInfo.linkStuckCount > 1) { 3871 // Once link gets stuck for more than 3 seconds, start reducing the score 3872 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 3873 } 3874 sb.append(String.format(",%d", score)); 3875 3876 if (isBadLinkspeed) { 3877 score -= 4 ; 3878 if (PDBG) { 3879 loge(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 3880 + " score=" + Integer.toString(score)); 3881 } 3882 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 3883 score += 4; // So as bad rssi alone dont kill us 3884 } 3885 sb.append(String.format(",%d", score)); 3886 3887 if (isBadRSSI) { 3888 if (mWifiInfo.badRssiCount < 7) 3889 mWifiInfo.badRssiCount += 1; 3890 } else if (isLowRSSI) { 3891 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 3892 if (mWifiInfo.badRssiCount > 0) { 3893 // Decrement bad Rssi count 3894 mWifiInfo.badRssiCount -= 1; 3895 } 3896 } else { 3897 mWifiInfo.badRssiCount = 0; 3898 mWifiInfo.lowRssiCount = 0; 3899 } 3900 3901 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount ; 3902 sb.append(String.format(",%d", score)); 3903 3904 if (PDBG) loge(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 3905 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 3906 + " --> score " + Integer.toString(score)); 3907 3908 3909 if (isHighRSSI) { 3910 score += 5; 3911 if (PDBG) loge(" isHighRSSI ---> score=" + Integer.toString(score)); 3912 } 3913 sb.append(String.format(",%d]", score)); 3914 3915 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 3916 3917 //sanitize boundaries 3918 if (score > NetworkAgent.WIFI_BASE_SCORE) 3919 score = NetworkAgent.WIFI_BASE_SCORE; 3920 if (score < 0) 3921 score = 0; 3922 3923 //report score 3924 if (score != mWifiInfo.score) { 3925 if (DBG) { 3926 loge("calculateWifiScore() report new score " + Integer.toString(score)); 3927 } 3928 mWifiInfo.score = score; 3929 if (mNetworkAgent != null) { 3930 mNetworkAgent.sendNetworkScore(score); 3931 } 3932 } 3933 wifiScoringReport = sb.toString(); 3934 } 3935 3936 public double getTxPacketRate() { 3937 if (mWifiInfo != null) { 3938 return mWifiInfo.txSuccessRate; 3939 } 3940 return -1; 3941 } 3942 3943 public double getRxPacketRate() { 3944 if (mWifiInfo != null) { 3945 return mWifiInfo.rxSuccessRate; 3946 } 3947 return -1; 3948 } 3949 3950 /** 3951 * Fetch TX packet counters on current connection 3952 */ 3953 private void fetchPktcntNative(RssiPacketCountInfo info) { 3954 String pktcntPoll = mWifiNative.pktcntPoll(); 3955 3956 if (pktcntPoll != null) { 3957 String[] lines = pktcntPoll.split("\n"); 3958 for (String line : lines) { 3959 String[] prop = line.split("="); 3960 if (prop.length < 2) continue; 3961 try { 3962 if (prop[0].equals("TXGOOD")) { 3963 info.txgood = Integer.parseInt(prop[1]); 3964 } else if (prop[0].equals("TXBAD")) { 3965 info.txbad = Integer.parseInt(prop[1]); 3966 } 3967 } catch (NumberFormatException e) { 3968 // Ignore 3969 } 3970 } 3971 } 3972 } 3973 3974 private boolean clearIPv4Address(String iface) { 3975 try { 3976 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 3977 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 3978 mNwService.setInterfaceConfig(iface, ifcg); 3979 return true; 3980 } catch (RemoteException e) { 3981 return false; 3982 } 3983 } 3984 3985 private boolean isProvisioned(LinkProperties lp) { 3986 return lp.isProvisioned() || 3987 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 3988 } 3989 3990 /** 3991 * Updates mLinkProperties by merging information from various sources. 3992 * 3993 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 3994 * netlink, static configuration, ...). When one of these sources of information has updated 3995 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 3996 * information that came from other sources. Instead, when one of those sources has new 3997 * information, we update the object that tracks the information from that source and then 3998 * call this method to apply the change to mLinkProperties. 3999 * 4000 * The information in mLinkProperties is currently obtained as follows: 4001 * - Interface name: set in the constructor. 4002 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4003 * - IPv4 routes, DNS servers, and domains: DHCP. 4004 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4005 * - HTTP proxy: the wifi config store. 4006 */ 4007 private void updateLinkProperties(int reason) { 4008 LinkProperties newLp = new LinkProperties(); 4009 4010 // Interface name and proxy are locally configured. 4011 newLp.setInterfaceName(mInterfaceName); 4012 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4013 4014 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4015 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4016 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4017 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4018 newLp.addRoute(route); 4019 } 4020 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4021 newLp.addDnsServer(dns); 4022 } 4023 4024 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4025 synchronized (mDhcpResultsLock) { 4026 // Even when we're using static configuration, we don't need to look at the config 4027 // store, because static IP configuration also populates mDhcpResults. 4028 if ((mDhcpResults != null)) { 4029 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4030 newLp.addRoute(route); 4031 } 4032 for (InetAddress dns : mDhcpResults.dnsServers) { 4033 newLp.addDnsServer(dns); 4034 } 4035 newLp.setDomains(mDhcpResults.domains); 4036 } 4037 } 4038 4039 final boolean linkChanged = !newLp.equals(mLinkProperties); 4040 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4041 final boolean isProvisioned = isProvisioned(newLp); 4042 final boolean lostIPv4Provisioning = 4043 mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address(); 4044 final DetailedState detailedState = getNetworkDetailedState(); 4045 4046 if (linkChanged) { 4047 if (DBG) { 4048 log("Link configuration changed for netId: " + mLastNetworkId 4049 + " old: " + mLinkProperties + " new: " + newLp); 4050 } 4051 mLinkProperties = newLp; 4052 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 4053 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 4054 } 4055 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4056 } 4057 4058 if (DBG) { 4059 StringBuilder sb = new StringBuilder(); 4060 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4061 sb.append(" state: " + detailedState); 4062 sb.append(" reason: " + smToString(reason)); 4063 4064 if (mLinkProperties != null) { 4065 if (mLinkProperties.hasIPv4Address()) { 4066 sb.append(" v4"); 4067 } 4068 if (mLinkProperties.hasGlobalIPv6Address()) { 4069 sb.append(" v6"); 4070 } 4071 if (mLinkProperties.hasIPv4DefaultRoute()) { 4072 sb.append(" v4r"); 4073 } 4074 if (mLinkProperties.hasIPv6DefaultRoute()) { 4075 sb.append(" v6r"); 4076 } 4077 if (mLinkProperties.hasIPv4DnsServer()) { 4078 sb.append(" v4dns"); 4079 } 4080 if (mLinkProperties.hasIPv6DnsServer()) { 4081 sb.append(" v6dns"); 4082 } 4083 if (isProvisioned) { 4084 sb.append(" isprov"); 4085 } 4086 } 4087 loge(sb.toString()); 4088 } 4089 4090 // If we just configured or lost IP configuration, do the needful. 4091 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4092 // here because those should only be called if we're attempting to connect or already 4093 // connected, whereas updateLinkProperties can be called at any time. 4094 switch (reason) { 4095 case DhcpStateMachine.DHCP_SUCCESS: 4096 case CMD_STATIC_IP_SUCCESS: 4097 // IPv4 provisioning succeded. Advance to connected state. 4098 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4099 if (!isProvisioned) { 4100 // Can never happen unless DHCP reports success but isProvisioned thinks the 4101 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4102 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4103 // TODO: disconnect here instead. If our configuration is not usable, there's no 4104 // point in staying connected, and if mLinkProperties is out of sync with 4105 // reality, that will cause problems in the future. 4106 loge("IPv4 config succeeded, but not provisioned"); 4107 } 4108 break; 4109 4110 case DhcpStateMachine.DHCP_FAILURE: 4111 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4112 // give up and disconnect. 4113 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4114 if (!isProvisioned || lostIPv4Provisioning) { 4115 sendMessage(CMD_IP_CONFIGURATION_LOST); 4116 } else { 4117 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4118 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4119 4120 // To be sure we don't get stuck with a non-working network if all we had is 4121 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4122 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4123 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4124 // necessary for provisioning, its deletion will cause us to disconnect. 4125 // 4126 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4127 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4128 // not return true if we're using DHCP and don't have an IPv4 default route. So 4129 // for now it's only here for extra redundancy. However, it will increase 4130 // robustness if we move to getting IPv4 routes from netlink as well. 4131 loge("DHCP failure: provisioned, clearing IPv4 address."); 4132 if (!clearIPv4Address(mInterfaceName)) { 4133 sendMessage(CMD_IP_CONFIGURATION_LOST); 4134 } 4135 } 4136 break; 4137 4138 case CMD_STATIC_IP_FAILURE: 4139 // Static configuration was invalid, or an error occurred in applying it. Give up. 4140 sendMessage(CMD_IP_CONFIGURATION_LOST); 4141 break; 4142 4143 case CMD_UPDATE_LINKPROPERTIES: 4144 // IP addresses, DNS servers, etc. changed. Act accordingly. 4145 if (wasProvisioned && !isProvisioned) { 4146 // We no longer have a usable network configuration. Disconnect. 4147 sendMessage(CMD_IP_CONFIGURATION_LOST); 4148 } else if (!wasProvisioned && isProvisioned) { 4149 // We have a usable IPv6-only config. Advance to connected state. 4150 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4151 } 4152 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4153 // If anything has changed and we're already connected, send out a notification. 4154 sendLinkConfigurationChangedBroadcast(); 4155 } 4156 break; 4157 } 4158 } 4159 4160 /** 4161 * Clears all our link properties. 4162 */ 4163 private void clearLinkProperties() { 4164 // Clear the link properties obtained from DHCP and netlink. 4165 synchronized (mDhcpResultsLock) { 4166 if (mDhcpResults != null) { 4167 mDhcpResults.clear(); 4168 } 4169 } 4170 mNetlinkTracker.clearLinkProperties(); 4171 4172 // Now clear the merged link properties. 4173 mLinkProperties.clear(); 4174 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4175 } 4176 4177 /** 4178 * try to update default route MAC address. 4179 */ 4180 private String updateDefaultRouteMacAddress(int timeout) { 4181 String address = null; 4182 for (RouteInfo route : mLinkProperties.getRoutes()) { 4183 if (route.isDefaultRoute() && route.hasGateway()) { 4184 InetAddress gateway = route.getGateway(); 4185 if (gateway instanceof Inet4Address) { 4186 if (PDBG) { 4187 loge("updateDefaultRouteMacAddress found Ipv4 default :" 4188 + gateway.getHostAddress()); 4189 } 4190 address = macAddressFromRoute(gateway.getHostAddress()); 4191 /* The gateway's MAC address is known */ 4192 if ((address == null) && (timeout > 0)) { 4193 boolean reachable = false; 4194 try { 4195 reachable = gateway.isReachable(timeout); 4196 } catch (Exception e) { 4197 loge("updateDefaultRouteMacAddress exception reaching :" 4198 + gateway.getHostAddress()); 4199 4200 } finally { 4201 if (reachable == true) { 4202 4203 address = macAddressFromRoute(gateway.getHostAddress()); 4204 if (PDBG) { 4205 loge("updateDefaultRouteMacAddress reachable (tried again) :" 4206 + gateway.getHostAddress() + " found " + address); 4207 } 4208 } 4209 } 4210 } 4211 if (address != null) { 4212 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4213 } 4214 } 4215 } 4216 } 4217 return address; 4218 } 4219 4220 private void sendScanResultsAvailableBroadcast() { 4221 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4222 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4223 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4224 } 4225 4226 private void sendRssiChangeBroadcast(final int newRssi) { 4227 try { 4228 mBatteryStats.noteWifiRssiChanged(newRssi); 4229 } catch (RemoteException e) { 4230 // Won't happen. 4231 } 4232 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4233 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4234 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4235 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4236 } 4237 4238 private void sendNetworkStateChangeBroadcast(String bssid) { 4239 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4240 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4241 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4242 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties (mLinkProperties)); 4243 if (bssid != null) 4244 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4245 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4246 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4247 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, new WifiInfo(mWifiInfo)); 4248 } 4249 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4250 } 4251 4252 private void sendLinkConfigurationChangedBroadcast() { 4253 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4254 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4255 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4256 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4257 } 4258 4259 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4260 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4261 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4262 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4263 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4264 } 4265 4266 /** 4267 * Record the detailed state of a network. 4268 * @param state the new {@code DetailedState} 4269 */ 4270 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4271 boolean hidden = false; 4272 4273 if (linkDebouncing || isRoaming()) { 4274 // There is generally a confusion in the system about colluding 4275 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4276 // which leads to multiple confusion. 4277 // 4278 // If link is de-bouncing or roaming, we already have an IP address 4279 // as well we were connected and are doing L2 cycles of 4280 // reconnecting or renewing IP address to check that we still have it 4281 // This L2 link flapping should ne be reflected into the Network state 4282 // which is the state of the WiFi Network visible to Layer 3 and applications 4283 // Note that once debouncing and roaming are completed, we will 4284 // set the Network state to where it should be, or leave it as unchanged 4285 // 4286 hidden = true; 4287 } 4288 if (DBG) { 4289 log("setDetailed state, old =" 4290 + mNetworkInfo.getDetailedState() + " and new state=" + state 4291 + " hidden=" + hidden); 4292 } 4293 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4294 // Always indicate that SSID has changed 4295 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4296 if (DBG) { 4297 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4298 } 4299 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4300 sendNetworkStateChangeBroadcast(null); 4301 } 4302 } 4303 if (hidden == true) { 4304 return false; 4305 } 4306 4307 if (state != mNetworkInfo.getDetailedState()) { 4308 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4309 if (mNetworkAgent != null) { 4310 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4311 } 4312 sendNetworkStateChangeBroadcast(null); 4313 return true; 4314 } 4315 return false; 4316 } 4317 4318 private DetailedState getNetworkDetailedState() { 4319 return mNetworkInfo.getDetailedState(); 4320 } 4321 4322 4323 private SupplicantState handleSupplicantStateChange(Message message) { 4324 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4325 SupplicantState state = stateChangeResult.state; 4326 // Supplicant state change 4327 // [31-13] Reserved for future use 4328 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4329 // 50023 supplicant_state_changed (custom|1|5) 4330 mWifiInfo.setSupplicantState(state); 4331 // Network id is only valid when we start connecting 4332 if (SupplicantState.isConnecting(state)) { 4333 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4334 } else { 4335 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4336 } 4337 4338 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4339 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4340 4341 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4342 4343 return state; 4344 } 4345 4346 /** 4347 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4348 * using the interface, stopping DHCP & disabling interface 4349 */ 4350 private void handleNetworkDisconnect() { 4351 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4352 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4353 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 4354 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 4355 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 4356 4357 4358 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4359 4360 stopDhcp(); 4361 4362 try { 4363 mNwService.clearInterfaceAddresses(mInterfaceName); 4364 mNwService.disableIpv6(mInterfaceName); 4365 } catch (Exception e) { 4366 loge("Failed to clear addresses or disable ipv6" + e); 4367 } 4368 4369 /* Reset data structures */ 4370 mBadLinkspeedcount = 0; 4371 mWifiInfo.reset(); 4372 linkDebouncing = false; 4373 /* Reset roaming parameters */ 4374 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4375 4376 /** 4377 * fullBandConnectedTimeIntervalMilli: 4378 * - start scans at mWifiConfigStore.associatedPartialScanPeriodMilli seconds interval 4379 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4380 * Initialize to sane value = 20 seconds 4381 */ 4382 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4383 4384 setNetworkDetailedState(DetailedState.DISCONNECTED); 4385 if (mNetworkAgent != null) { 4386 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4387 mNetworkAgent = null; 4388 } 4389 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4390 4391 /* Clear network properties */ 4392 clearLinkProperties(); 4393 4394 /* Cend event to CM & network change broadcast */ 4395 sendNetworkStateChangeBroadcast(mLastBssid); 4396 4397 /* Cancel auto roam requests */ 4398 autoRoamSetBSSID(mLastNetworkId, "any"); 4399 4400 mLastBssid= null; 4401 registerDisconnected(); 4402 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4403 } 4404 4405 private void handleSupplicantConnectionLoss() { 4406 /* Socket connection can be lost when we do a graceful shutdown 4407 * or when the driver is hung. Ensure supplicant is stopped here. 4408 */ 4409 mWifiMonitor.killSupplicant(mP2pSupported); 4410 mWifiNative.closeSupplicantConnection(); 4411 sendSupplicantConnectionChangedBroadcast(false); 4412 setWifiState(WIFI_STATE_DISABLED); 4413 } 4414 4415 void handlePreDhcpSetup() { 4416 mDhcpActive = true; 4417 if (!mBluetoothConnectionActive) { 4418 /* 4419 * There are problems setting the Wi-Fi driver's power 4420 * mode to active when bluetooth coexistence mode is 4421 * enabled or sense. 4422 * <p> 4423 * We set Wi-Fi to active mode when 4424 * obtaining an IP address because we've found 4425 * compatibility issues with some routers with low power 4426 * mode. 4427 * <p> 4428 * In order for this active power mode to properly be set, 4429 * we disable coexistence mode until we're done with 4430 * obtaining an IP address. One exception is if we 4431 * are currently connected to a headset, since disabling 4432 * coexistence would interrupt that connection. 4433 */ 4434 // Disable the coexistence mode 4435 mWifiNative.setBluetoothCoexistenceMode( 4436 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4437 } 4438 4439 // Disable power save and suspend optimizations during DHCP 4440 // Note: The order here is important for now. Brcm driver changes 4441 // power settings when we control suspend mode optimizations. 4442 // TODO: Remove this comment when the driver is fixed. 4443 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4444 mWifiNative.setPowerSave(false); 4445 4446 // stopBatchedScan(); 4447 WifiNative.pauseScan(); 4448 4449 // Update link layer stats 4450 getWifiLinkLayerStats(false); 4451 4452 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4453 Message msg = new Message(); 4454 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4455 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4456 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4457 msg.obj = mDhcpStateMachine; 4458 mWifiP2pChannel.sendMessage(msg); 4459 } 4460 4461 4462 private boolean useLegacyDhcpClient() { 4463 return Settings.Global.getInt( 4464 mContext.getContentResolver(), 4465 Settings.Global.LEGACY_DHCP_CLIENT, 0) == 1; 4466 } 4467 4468 private void maybeInitDhcpStateMachine() { 4469 if (mDhcpStateMachine == null) { 4470 if (useLegacyDhcpClient()) { 4471 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4472 mContext, WifiStateMachine.this, mInterfaceName); 4473 } else { 4474 mDhcpStateMachine = DhcpClient.makeDhcpStateMachine( 4475 mContext, WifiStateMachine.this, mInterfaceName); 4476 } 4477 } 4478 } 4479 4480 void startDhcp() { 4481 maybeInitDhcpStateMachine(); 4482 mDhcpStateMachine.registerForPreDhcpNotification(); 4483 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4484 } 4485 4486 void renewDhcp() { 4487 maybeInitDhcpStateMachine(); 4488 mDhcpStateMachine.registerForPreDhcpNotification(); 4489 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4490 } 4491 4492 void stopDhcp() { 4493 if (mDhcpStateMachine != null) { 4494 /* In case we were in middle of DHCP operation restore back powermode */ 4495 handlePostDhcpSetup(); 4496 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4497 } 4498 } 4499 4500 void handlePostDhcpSetup() { 4501 /* Restore power save and suspend optimizations */ 4502 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4503 mWifiNative.setPowerSave(true); 4504 4505 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 4506 4507 // Set the coexistence mode back to its default value 4508 mWifiNative.setBluetoothCoexistenceMode( 4509 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4510 4511 mDhcpActive = false; 4512 4513 // startBatchedScan(); 4514 WifiNative.restartScan(); 4515 } 4516 4517 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 4518 4519 if (PDBG) { 4520 loge("wifistatemachine handleIPv4Success <" + dhcpResults.toString() + ">"); 4521 loge("link address " + dhcpResults.ipAddress); 4522 } 4523 4524 synchronized (mDhcpResultsLock) { 4525 mDhcpResults = dhcpResults; 4526 } 4527 4528 Inet4Address addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 4529 if (isRoaming()) { 4530 if (addr instanceof Inet4Address) { 4531 int previousAddress = mWifiInfo.getIpAddress(); 4532 int newAddress = NetworkUtils.inetAddressToInt(addr); 4533 if (previousAddress != newAddress) { 4534 loge("handleIPv4Success, roaming and address changed" + 4535 mWifiInfo + " got: " + addr); 4536 } else { 4537 4538 } 4539 } else { 4540 loge("handleIPv4Success, roaming and didnt get an IPv4 address" + 4541 addr.toString()); 4542 } 4543 } 4544 mWifiInfo.setInetAddress(addr); 4545 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 4546 updateLinkProperties(reason); 4547 } 4548 4549 private void handleSuccessfulIpConfiguration() { 4550 mLastSignalLevel = -1; // Force update of signal strength 4551 WifiConfiguration c = getCurrentWifiConfiguration(); 4552 if (c != null) { 4553 // Reset IP failure tracking 4554 c.numConnectionFailures = 0; 4555 4556 // Tell the framework whether the newly connected network is trusted or untrusted. 4557 updateCapabilities(c); 4558 } 4559 if (c != null) { 4560 ScanResult result = getCurrentScanResult(); 4561 if (result == null) { 4562 loge("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 4563 c.configKey()); 4564 } else { 4565 // Clear the per BSSID failure count 4566 result.numIpConfigFailures = 0; 4567 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 4568 // any BSSID, even though it may already have a non zero ip failure count, 4569 // this will typically happen if the user walks away and come back to his arrea 4570 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 4571 // in supplicant for a couple of hours or a day 4572 mWifiNative.clearBlacklist(); 4573 } 4574 } 4575 } 4576 4577 private void handleIPv4Failure(int reason) { 4578 synchronized(mDhcpResultsLock) { 4579 if (mDhcpResults != null) { 4580 mDhcpResults.clear(); 4581 } 4582 } 4583 if (PDBG) { 4584 loge("wifistatemachine handleIPv4Failure"); 4585 } 4586 updateLinkProperties(reason); 4587 } 4588 4589 private void handleIpConfigurationLost() { 4590 mWifiInfo.setInetAddress(null); 4591 mWifiInfo.setMeteredHint(false); 4592 4593 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 4594 "DHCP FAILURE", mWifiInfo.getBSSID()); 4595 4596 /* DHCP times out after about 30 seconds, we do a 4597 * disconnect thru supplicant, we will let autojoin retry connecting to the network 4598 */ 4599 mWifiNative.disconnect(); 4600 } 4601 4602 private int convertFrequencyToChannelNumber(int frequency) { 4603 if (frequency >= 2412 && frequency <= 2484) { 4604 return (frequency -2412) / 5 + 1; 4605 } else if (frequency >= 5170 && frequency <=5825) { 4606 //DFS is included 4607 return (frequency -5170) / 5 + 34; 4608 } else { 4609 return 0; 4610 } 4611 } 4612 4613 private int chooseApChannel(int apBand) { 4614 int apChannel; 4615 int[] channel; 4616 4617 if (apBand == 0) { 4618 //for 2.4GHz, we only set the AP at channel 1,6,11 4619 apChannel = 5 * mRandom.nextInt(3) + 1; 4620 } else { 4621 //5G without DFS 4622 channel = mWifiNative.getChannelsForBand(2); 4623 if (channel != null && channel.length > 0) { 4624 apChannel = channel[mRandom.nextInt(channel.length)]; 4625 apChannel = convertFrequencyToChannelNumber(apChannel); 4626 } else { 4627 Log.e(TAG, "SoftAp do not get available channel list"); 4628 apChannel = 0; 4629 } 4630 } 4631 4632 if(DBG) { 4633 Log.d(TAG, "SoftAp set on channel " + apChannel); 4634 } 4635 4636 return apChannel; 4637 } 4638 4639 4640 /* Current design is to not set the config on a running hostapd but instead 4641 * stop and start tethering when user changes config on a running access point 4642 * 4643 * TODO: Add control channel setup through hostapd that allows changing config 4644 * on a running daemon 4645 */ 4646 private void startSoftApWithConfig(final WifiConfiguration configuration) { 4647 // set channel 4648 final WifiConfiguration config = new WifiConfiguration(configuration); 4649 4650 if (DBG) { 4651 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 4652 } 4653 //fix me -- set country code through HAL Here 4654 if (config.apChannel == 0) { 4655 config.apChannel = chooseApChannel(config.apBand); 4656 if (config.apChannel == 0) { 4657 //fail to get available channel 4658 sendMessage(CMD_START_AP_FAILURE); 4659 return; 4660 } 4661 } 4662 //turn off interface 4663 if (!mWifiNative.toggleInterface(0)) { 4664 sendMessage(CMD_START_AP_FAILURE); 4665 return; 4666 } 4667 // Start hostapd on a separate thread 4668 new Thread(new Runnable() { 4669 public void run() { 4670 try { 4671 mNwService.startAccessPoint(config, mInterfaceName); 4672 } catch (Exception e) { 4673 loge("Exception in softap start " + e); 4674 try { 4675 mNwService.stopAccessPoint(mInterfaceName); 4676 mNwService.startAccessPoint(config, mInterfaceName); 4677 } catch (Exception e1) { 4678 loge("Exception in softap re-start " + e1); 4679 sendMessage(CMD_START_AP_FAILURE); 4680 return; 4681 } 4682 } 4683 if (DBG) log("Soft AP start successful"); 4684 sendMessage(CMD_START_AP_SUCCESS); 4685 } 4686 }).start(); 4687 } 4688 4689 /* 4690 * Read a MAC address in /proc/arp/table, used by WifistateMachine 4691 * so as to record MAC address of default gateway. 4692 **/ 4693 private String macAddressFromRoute(String ipAddress) { 4694 String macAddress = null; 4695 BufferedReader reader = null; 4696 try { 4697 reader = new BufferedReader(new FileReader("/proc/net/arp")); 4698 4699 // Skip over the line bearing colum titles 4700 String line = reader.readLine(); 4701 4702 while ((line = reader.readLine()) != null) { 4703 String[] tokens = line.split("[ ]+"); 4704 if (tokens.length < 6) { 4705 continue; 4706 } 4707 4708 // ARP column format is 4709 // Address HWType HWAddress Flags Mask IFace 4710 String ip = tokens[0]; 4711 String mac = tokens[3]; 4712 4713 if (ipAddress.equals(ip)) { 4714 macAddress = mac; 4715 break; 4716 } 4717 } 4718 4719 if (macAddress == null) { 4720 loge("Did not find remoteAddress {" + ipAddress + "} in " + 4721 "/proc/net/arp"); 4722 } 4723 4724 } catch (FileNotFoundException e) { 4725 loge("Could not open /proc/net/arp to lookup mac address"); 4726 } catch (IOException e) { 4727 loge("Could not read /proc/net/arp to lookup mac address"); 4728 } finally { 4729 try { 4730 if (reader != null) { 4731 reader.close(); 4732 } 4733 } catch (IOException e) { 4734 // Do nothing 4735 } 4736 } 4737 return macAddress; 4738 4739 } 4740 4741 private class WifiNetworkFactory extends NetworkFactory { 4742 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 4743 super(l, c, TAG, f); 4744 } 4745 4746 @Override 4747 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 4748 ++mConnectionRequests; 4749 } 4750 4751 @Override 4752 protected void releaseNetworkFor(NetworkRequest networkRequest) { 4753 --mConnectionRequests; 4754 } 4755 4756 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 4757 pw.println("mConnectionRequests " + mConnectionRequests); 4758 } 4759 4760 } 4761 4762 private class UntrustedWifiNetworkFactory extends NetworkFactory { 4763 private int mUntrustedReqCount; 4764 4765 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 4766 super(l, c, tag, f); 4767 } 4768 4769 @Override 4770 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 4771 if (!networkRequest.networkCapabilities.hasCapability( 4772 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 4773 if (++mUntrustedReqCount == 1) { 4774 mWifiAutoJoinController.setAllowUntrustedConnections(true); 4775 } 4776 } 4777 } 4778 4779 @Override 4780 protected void releaseNetworkFor(NetworkRequest networkRequest) { 4781 if (!networkRequest.networkCapabilities.hasCapability( 4782 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 4783 if (--mUntrustedReqCount == 0) { 4784 mWifiAutoJoinController.setAllowUntrustedConnections(false); 4785 } 4786 } 4787 } 4788 4789 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 4790 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 4791 } 4792 } 4793 4794 void maybeRegisterNetworkFactory() { 4795 if (mNetworkFactory == null) { 4796 checkAndSetConnectivityInstance(); 4797 if (mCm != null) { 4798 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 4799 NETWORKTYPE, mNetworkCapabilitiesFilter); 4800 mNetworkFactory.setScoreFilter(60); 4801 mNetworkFactory.register(); 4802 4803 // We can't filter untrusted network in the capabilities filter because a trusted 4804 // network would still satisfy a request that accepts untrusted ones. 4805 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 4806 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 4807 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 4808 mUntrustedNetworkFactory.register(); 4809 } 4810 } 4811 } 4812 4813 /******************************************************** 4814 * HSM states 4815 *******************************************************/ 4816 4817 class DefaultState extends State { 4818 @Override 4819 public boolean processMessage(Message message) { 4820 logStateAndMessage(message, getClass().getSimpleName()); 4821 4822 switch (message.what) { 4823 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 4824 AsyncChannel ac = (AsyncChannel) message.obj; 4825 if (ac == mWifiP2pChannel) { 4826 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 4827 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 4828 } else { 4829 loge("WifiP2pService connection failure, error=" + message.arg1); 4830 } 4831 } else { 4832 loge("got HALF_CONNECTED for unknown channel"); 4833 } 4834 break; 4835 } 4836 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 4837 AsyncChannel ac = (AsyncChannel) message.obj; 4838 if (ac == mWifiP2pChannel) { 4839 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 4840 //TODO: Re-establish connection to state machine after a delay 4841 // mWifiP2pChannel.connect(mContext, getHandler(), 4842 // mWifiP2pManager.getMessenger()); 4843 } 4844 break; 4845 } 4846 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 4847 mBluetoothConnectionActive = (message.arg1 != 4848 BluetoothAdapter.STATE_DISCONNECTED); 4849 break; 4850 /* Synchronous call returns */ 4851 case CMD_PING_SUPPLICANT: 4852 case CMD_ENABLE_NETWORK: 4853 case CMD_ADD_OR_UPDATE_NETWORK: 4854 case CMD_REMOVE_NETWORK: 4855 case CMD_SAVE_CONFIG: 4856 replyToMessage(message, message.what, FAILURE); 4857 break; 4858 case CMD_GET_CAPABILITY_FREQ: 4859 replyToMessage(message, message.what, null); 4860 break; 4861 case CMD_GET_CONFIGURED_NETWORKS: 4862 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4863 break; 4864 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 4865 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4866 break; 4867 case CMD_ENABLE_RSSI_POLL: 4868 mEnableRssiPolling = (message.arg1 == 1); 4869 break; 4870 case CMD_SET_HIGH_PERF_MODE: 4871 if (message.arg1 == 1) { 4872 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 4873 } else { 4874 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 4875 } 4876 break; 4877 case CMD_BOOT_COMPLETED: 4878 maybeRegisterNetworkFactory(); 4879 break; 4880 case CMD_SET_BATCHED_SCAN: 4881 recordBatchedScanSettings(message.arg1, message.arg2, (Bundle)message.obj); 4882 break; 4883 case CMD_POLL_BATCHED_SCAN: 4884 handleBatchedScanPollRequest(); 4885 break; 4886 case CMD_START_NEXT_BATCHED_SCAN: 4887 startNextBatchedScan(); 4888 break; 4889 case CMD_SCREEN_STATE_CHANGED: 4890 handleScreenStateChanged(message.arg1 != 0, 4891 /* startBackgroundScanIfNeeded = */ false); 4892 break; 4893 /* Discard */ 4894 case CMD_START_SCAN: 4895 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4896 break; 4897 case CMD_START_SUPPLICANT: 4898 case CMD_STOP_SUPPLICANT: 4899 case CMD_STOP_SUPPLICANT_FAILED: 4900 case CMD_START_DRIVER: 4901 case CMD_STOP_DRIVER: 4902 case CMD_DELAYED_STOP_DRIVER: 4903 case CMD_DRIVER_START_TIMED_OUT: 4904 case CMD_START_AP: 4905 case CMD_START_AP_SUCCESS: 4906 case CMD_START_AP_FAILURE: 4907 case CMD_STOP_AP: 4908 case CMD_TETHER_STATE_CHANGE: 4909 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 4910 case CMD_DISCONNECT: 4911 case CMD_RECONNECT: 4912 case CMD_REASSOCIATE: 4913 case CMD_RELOAD_TLS_AND_RECONNECT: 4914 case WifiMonitor.SUP_CONNECTION_EVENT: 4915 case WifiMonitor.SUP_DISCONNECTION_EVENT: 4916 case WifiMonitor.NETWORK_CONNECTION_EVENT: 4917 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 4918 case WifiMonitor.SCAN_RESULTS_EVENT: 4919 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 4920 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 4921 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 4922 case WifiMonitor.WPS_OVERLAP_EVENT: 4923 case CMD_BLACKLIST_NETWORK: 4924 case CMD_CLEAR_BLACKLIST: 4925 case CMD_SET_OPERATIONAL_MODE: 4926 case CMD_SET_COUNTRY_CODE: 4927 case CMD_SET_FREQUENCY_BAND: 4928 case CMD_RSSI_POLL: 4929 case CMD_ENABLE_ALL_NETWORKS: 4930 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 4931 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 4932 /* Handled by WifiApConfigStore */ 4933 case CMD_SET_AP_CONFIG: 4934 case CMD_SET_AP_CONFIG_COMPLETED: 4935 case CMD_REQUEST_AP_CONFIG: 4936 case CMD_RESPONSE_AP_CONFIG: 4937 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 4938 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 4939 case CMD_NO_NETWORKS_PERIODIC_SCAN: 4940 case CMD_DISABLE_P2P_RSP: 4941 case WifiMonitor.SUP_REQUEST_IDENTITY: 4942 case CMD_TEST_NETWORK_DISCONNECT: 4943 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 4944 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 4945 case CMD_TARGET_BSSID: 4946 case CMD_AUTO_CONNECT: 4947 case CMD_AUTO_ROAM: 4948 case CMD_AUTO_SAVE_NETWORK: 4949 case CMD_ASSOCIATED_BSSID: 4950 case CMD_UNWANTED_NETWORK: 4951 case CMD_DISCONNECTING_WATCHDOG_TIMER: 4952 case CMD_ROAM_WATCHDOG_TIMER: 4953 case CMD_DISABLE_EPHEMERAL_NETWORK: 4954 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4955 break; 4956 case DhcpStateMachine.CMD_ON_QUIT: 4957 mDhcpStateMachine = null; 4958 break; 4959 case CMD_SET_SUSPEND_OPT_ENABLED: 4960 if (message.arg1 == 1) { 4961 mSuspendWakeLock.release(); 4962 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 4963 } else { 4964 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 4965 } 4966 break; 4967 case WifiMonitor.DRIVER_HUNG_EVENT: 4968 setSupplicantRunning(false); 4969 setSupplicantRunning(true); 4970 break; 4971 case WifiManager.CONNECT_NETWORK: 4972 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 4973 WifiManager.BUSY); 4974 break; 4975 case WifiManager.FORGET_NETWORK: 4976 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 4977 WifiManager.BUSY); 4978 break; 4979 case WifiManager.SAVE_NETWORK: 4980 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 4981 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 4982 WifiManager.BUSY); 4983 break; 4984 case WifiManager.START_WPS: 4985 replyToMessage(message, WifiManager.WPS_FAILED, 4986 WifiManager.BUSY); 4987 break; 4988 case WifiManager.CANCEL_WPS: 4989 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 4990 WifiManager.BUSY); 4991 break; 4992 case WifiManager.DISABLE_NETWORK: 4993 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 4994 WifiManager.BUSY); 4995 break; 4996 case WifiManager.RSSI_PKTCNT_FETCH: 4997 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 4998 WifiManager.BUSY); 4999 break; 5000 case CMD_GET_SUPPORTED_FEATURES: 5001 if (WifiNative.startHal()) { 5002 int featureSet = WifiNative.getSupportedFeatureSet(); 5003 replyToMessage(message, message.what, featureSet); 5004 } else { 5005 replyToMessage(message, message.what, 0); 5006 } 5007 break; 5008 case CMD_GET_LINK_LAYER_STATS: 5009 // Not supported hence reply with error message 5010 replyToMessage(message, message.what, null); 5011 break; 5012 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5013 NetworkInfo info = (NetworkInfo) message.obj; 5014 mP2pConnected.set(info.isConnected()); 5015 break; 5016 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5017 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5018 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5019 break; 5020 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5021 case CMD_UPDATE_LINKPROPERTIES: 5022 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5023 break; 5024 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5025 case CMD_IP_CONFIGURATION_LOST: 5026 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5027 break; 5028 case CMD_GET_CONNECTION_STATISTICS: 5029 replyToMessage(message, message.what, mWifiConnectionStatistics); 5030 break; 5031 default: 5032 loge("Error! unhandled message" + message); 5033 break; 5034 } 5035 return HANDLED; 5036 } 5037 } 5038 5039 class InitialState extends State { 5040 @Override 5041 public void enter() { 5042 mWifiNative.unloadDriver(); 5043 5044 if (mWifiP2pChannel == null) { 5045 mWifiP2pChannel = new AsyncChannel(); 5046 mWifiP2pChannel.connect(mContext, getHandler(), 5047 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5048 } 5049 5050 if (mWifiApConfigChannel == null) { 5051 mWifiApConfigChannel = new AsyncChannel(); 5052 WifiApConfigStore wifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 5053 mContext, getHandler()); 5054 wifiApConfigStore.loadApConfiguration(); 5055 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5056 wifiApConfigStore.getMessenger()); 5057 } 5058 } 5059 @Override 5060 public boolean processMessage(Message message) { 5061 logStateAndMessage(message, getClass().getSimpleName()); 5062 switch (message.what) { 5063 case CMD_START_SUPPLICANT: 5064 if (mWifiNative.loadDriver()) { 5065 try { 5066 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5067 } catch (Exception e) { 5068 loge("Failed to reload STA firmware " + e); 5069 // Continue 5070 } 5071 5072 try { 5073 // A runtime crash can leave the interface up and 5074 // IP addresses configured, and this affects 5075 // connectivity when supplicant starts up. 5076 // Ensure interface is down and we have no IP 5077 // addresses before a supplicant start. 5078 mNwService.setInterfaceDown(mInterfaceName); 5079 mNwService.clearInterfaceAddresses(mInterfaceName); 5080 5081 // Set privacy extensions 5082 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5083 5084 // IPv6 is enabled only as long as access point is connected since: 5085 // - IPv6 addresses and routes stick around after disconnection 5086 // - kernel is unaware when connected and fails to start IPv6 negotiation 5087 // - kernel can start autoconfiguration when 802.1x is not complete 5088 mNwService.disableIpv6(mInterfaceName); 5089 } catch (RemoteException re) { 5090 loge("Unable to change interface settings: " + re); 5091 } catch (IllegalStateException ie) { 5092 loge("Unable to change interface settings: " + ie); 5093 } 5094 5095 /* Stop a running supplicant after a runtime restart 5096 * Avoids issues with drivers that do not handle interface down 5097 * on a running supplicant properly. 5098 */ 5099 mWifiMonitor.killSupplicant(mP2pSupported); 5100 if(mWifiNative.startSupplicant(mP2pSupported)) { 5101 setWifiState(WIFI_STATE_ENABLING); 5102 if (DBG) log("Supplicant start successful"); 5103 mWifiMonitor.startMonitoring(); 5104 transitionTo(mSupplicantStartingState); 5105 } else { 5106 loge("Failed to start supplicant!"); 5107 } 5108 } else { 5109 loge("Failed to load driver"); 5110 } 5111 break; 5112 case CMD_START_AP: 5113 if (mWifiNative.loadDriver()) { 5114 setWifiApState(WIFI_AP_STATE_ENABLING); 5115 transitionTo(mSoftApStartingState); 5116 } else { 5117 loge("Failed to load driver for softap"); 5118 } 5119 break; 5120 default: 5121 return NOT_HANDLED; 5122 } 5123 return HANDLED; 5124 } 5125 } 5126 5127 class SupplicantStartingState extends State { 5128 private void initializeWpsDetails() { 5129 String detail; 5130 detail = SystemProperties.get("ro.product.name", ""); 5131 if (!mWifiNative.setDeviceName(detail)) { 5132 loge("Failed to set device name " + detail); 5133 } 5134 detail = SystemProperties.get("ro.product.manufacturer", ""); 5135 if (!mWifiNative.setManufacturer(detail)) { 5136 loge("Failed to set manufacturer " + detail); 5137 } 5138 detail = SystemProperties.get("ro.product.model", ""); 5139 if (!mWifiNative.setModelName(detail)) { 5140 loge("Failed to set model name " + detail); 5141 } 5142 detail = SystemProperties.get("ro.product.model", ""); 5143 if (!mWifiNative.setModelNumber(detail)) { 5144 loge("Failed to set model number " + detail); 5145 } 5146 detail = SystemProperties.get("ro.serialno", ""); 5147 if (!mWifiNative.setSerialNumber(detail)) { 5148 loge("Failed to set serial number " + detail); 5149 } 5150 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5151 loge("Failed to set WPS config methods"); 5152 } 5153 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5154 loge("Failed to set primary device type " + mPrimaryDeviceType); 5155 } 5156 } 5157 5158 @Override 5159 public boolean processMessage(Message message) { 5160 logStateAndMessage(message, getClass().getSimpleName()); 5161 5162 switch(message.what) { 5163 case WifiMonitor.SUP_CONNECTION_EVENT: 5164 if (DBG) log("Supplicant connection established"); 5165 setWifiState(WIFI_STATE_ENABLED); 5166 mSupplicantRestartCount = 0; 5167 /* Reset the supplicant state to indicate the supplicant 5168 * state is not known at this time */ 5169 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5170 /* Initialize data structures */ 5171 mLastBssid = null; 5172 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5173 mLastSignalLevel = -1; 5174 5175 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5176 mWifiNative.enableSaveConfig(); 5177 mWifiConfigStore.loadAndEnableAllNetworks(); 5178 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5179 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5180 } 5181 if (mWifiConfigStore.associatedPartialScanPeriodMilli.get() < 0) { 5182 mWifiConfigStore.associatedPartialScanPeriodMilli.set(0); 5183 } 5184 initializeWpsDetails(); 5185 5186 sendSupplicantConnectionChangedBroadcast(true); 5187 transitionTo(mDriverStartedState); 5188 break; 5189 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5190 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5191 loge("Failed to setup control channel, restart supplicant"); 5192 mWifiMonitor.killSupplicant(mP2pSupported); 5193 transitionTo(mInitialState); 5194 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5195 } else { 5196 loge("Failed " + mSupplicantRestartCount + 5197 " times to start supplicant, unload driver"); 5198 mSupplicantRestartCount = 0; 5199 setWifiState(WIFI_STATE_UNKNOWN); 5200 transitionTo(mInitialState); 5201 } 5202 break; 5203 case CMD_START_SUPPLICANT: 5204 case CMD_STOP_SUPPLICANT: 5205 case CMD_START_AP: 5206 case CMD_STOP_AP: 5207 case CMD_START_DRIVER: 5208 case CMD_STOP_DRIVER: 5209 case CMD_SET_OPERATIONAL_MODE: 5210 case CMD_SET_COUNTRY_CODE: 5211 case CMD_SET_FREQUENCY_BAND: 5212 case CMD_START_PACKET_FILTERING: 5213 case CMD_STOP_PACKET_FILTERING: 5214 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5215 deferMessage(message); 5216 break; 5217 default: 5218 return NOT_HANDLED; 5219 } 5220 return HANDLED; 5221 } 5222 } 5223 5224 class SupplicantStartedState extends State { 5225 @Override 5226 public void enter() { 5227 /* Wifi is available as long as we have a connection to supplicant */ 5228 mNetworkInfo.setIsAvailable(true); 5229 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5230 5231 int defaultInterval = mContext.getResources().getInteger( 5232 R.integer.config_wifi_supplicant_scan_interval); 5233 5234 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5235 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5236 defaultInterval); 5237 5238 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5239 mWifiNative.setExternalSim(true); 5240 5241 /* turn on use of DFS channels */ 5242 WifiNative.setDfsFlag(true); 5243 5244 /* set country code */ 5245 setCountryCode(); 5246 5247 setRandomMacOui(); 5248 mWifiNative.enableAutoConnect(false); 5249 } 5250 5251 @Override 5252 public boolean processMessage(Message message) { 5253 logStateAndMessage(message, getClass().getSimpleName()); 5254 5255 switch(message.what) { 5256 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5257 if (mP2pSupported) { 5258 transitionTo(mWaitForP2pDisableState); 5259 } else { 5260 transitionTo(mSupplicantStoppingState); 5261 } 5262 break; 5263 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5264 loge("Connection lost, restart supplicant"); 5265 handleSupplicantConnectionLoss(); 5266 handleNetworkDisconnect(); 5267 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5268 if (mP2pSupported) { 5269 transitionTo(mWaitForP2pDisableState); 5270 } else { 5271 transitionTo(mInitialState); 5272 } 5273 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5274 break; 5275 case WifiMonitor.SCAN_RESULTS_EVENT: 5276 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5277 closeRadioScanStats(); 5278 noteScanEnd(); 5279 setScanResults(); 5280 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5281 /* Just updated results from full scan, let apps know about this */ 5282 sendScanResultsAvailableBroadcast(); 5283 } 5284 mSendScanResultsBroadcast = false; 5285 mIsScanOngoing = false; 5286 mIsFullScanOngoing = false; 5287 if (mBufferedScanMsg.size() > 0) 5288 sendMessage(mBufferedScanMsg.remove()); 5289 break; 5290 case CMD_PING_SUPPLICANT: 5291 boolean ok = mWifiNative.ping(); 5292 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5293 break; 5294 case CMD_GET_CAPABILITY_FREQ: 5295 String freqs = mWifiNative.getFreqCapability(); 5296 replyToMessage(message, message.what, freqs); 5297 break; 5298 case CMD_START_AP: 5299 /* Cannot start soft AP while in client mode */ 5300 loge("Failed to start soft AP with a running supplicant"); 5301 setWifiApState(WIFI_AP_STATE_FAILED); 5302 break; 5303 case CMD_SET_OPERATIONAL_MODE: 5304 mOperationalMode = message.arg1; 5305 mWifiConfigStore. 5306 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5307 break; 5308 case CMD_TARGET_BSSID: 5309 // Trying to associate to this BSSID 5310 if (message.obj != null) { 5311 mTargetRoamBSSID = (String) message.obj; 5312 } 5313 break; 5314 case CMD_GET_LINK_LAYER_STATS: 5315 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5316 if (stats == null) { 5317 // When firmware doesnt support link layer stats, return an empty object 5318 stats = new WifiLinkLayerStats(); 5319 } 5320 replyToMessage(message, message.what, stats); 5321 break; 5322 case CMD_SET_COUNTRY_CODE: 5323 String country = (String) message.obj; 5324 5325 final boolean persist = (message.arg2 == 1); 5326 final int sequence = message.arg1; 5327 5328 if (sequence != mCountryCodeSequence.get()) { 5329 if (DBG) log("set country code ignored due to sequnce num"); 5330 break; 5331 } 5332 if (DBG) log("set country code " + country); 5333 country = country.toUpperCase(Locale.ROOT); 5334 5335 if (mDriverSetCountryCode == null || !mDriverSetCountryCode.equals(country)) { 5336 if (mWifiNative.setCountryCode(country)) { 5337 mDriverSetCountryCode = country; 5338 } else { 5339 loge("Failed to set country code " + country); 5340 } 5341 } 5342 5343 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5344 break; 5345 default: 5346 return NOT_HANDLED; 5347 } 5348 return HANDLED; 5349 } 5350 5351 @Override 5352 public void exit() { 5353 mNetworkInfo.setIsAvailable(false); 5354 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5355 } 5356 } 5357 5358 class SupplicantStoppingState extends State { 5359 @Override 5360 public void enter() { 5361 /* Send any reset commands to supplicant before shutting it down */ 5362 handleNetworkDisconnect(); 5363 if (mDhcpStateMachine != null) { 5364 mDhcpStateMachine.doQuit(); 5365 } 5366 5367 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5368 if (suppState == null) suppState = "unknown"; 5369 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5370 if (p2pSuppState == null) p2pSuppState = "unknown"; 5371 5372 loge("SupplicantStoppingState: stopSupplicant " 5373 + " init.svc.wpa_supplicant=" + suppState 5374 + " init.svc.p2p_supplicant=" + p2pSuppState); 5375 mWifiMonitor.stopSupplicant(); 5376 5377 /* Send ourselves a delayed message to indicate failure after a wait time */ 5378 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5379 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5380 setWifiState(WIFI_STATE_DISABLING); 5381 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5382 } 5383 @Override 5384 public boolean processMessage(Message message) { 5385 logStateAndMessage(message, getClass().getSimpleName()); 5386 5387 switch(message.what) { 5388 case WifiMonitor.SUP_CONNECTION_EVENT: 5389 loge("Supplicant connection received while stopping"); 5390 break; 5391 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5392 if (DBG) log("Supplicant connection lost"); 5393 handleSupplicantConnectionLoss(); 5394 transitionTo(mInitialState); 5395 break; 5396 case CMD_STOP_SUPPLICANT_FAILED: 5397 if (message.arg1 == mSupplicantStopFailureToken) { 5398 loge("Timed out on a supplicant stop, kill and proceed"); 5399 handleSupplicantConnectionLoss(); 5400 transitionTo(mInitialState); 5401 } 5402 break; 5403 case CMD_START_SUPPLICANT: 5404 case CMD_STOP_SUPPLICANT: 5405 case CMD_START_AP: 5406 case CMD_STOP_AP: 5407 case CMD_START_DRIVER: 5408 case CMD_STOP_DRIVER: 5409 case CMD_SET_OPERATIONAL_MODE: 5410 case CMD_SET_COUNTRY_CODE: 5411 case CMD_SET_FREQUENCY_BAND: 5412 case CMD_START_PACKET_FILTERING: 5413 case CMD_STOP_PACKET_FILTERING: 5414 deferMessage(message); 5415 break; 5416 default: 5417 return NOT_HANDLED; 5418 } 5419 return HANDLED; 5420 } 5421 } 5422 5423 class DriverStartingState extends State { 5424 private int mTries; 5425 @Override 5426 public void enter() { 5427 mTries = 1; 5428 /* Send ourselves a delayed message to start driver a second time */ 5429 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5430 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5431 } 5432 @Override 5433 public boolean processMessage(Message message) { 5434 logStateAndMessage(message, getClass().getSimpleName()); 5435 5436 switch(message.what) { 5437 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5438 SupplicantState state = handleSupplicantStateChange(message); 5439 /* If suplicant is exiting out of INTERFACE_DISABLED state into 5440 * a state that indicates driver has started, it is ready to 5441 * receive driver commands 5442 */ 5443 if (SupplicantState.isDriverActive(state)) { 5444 transitionTo(mDriverStartedState); 5445 } 5446 break; 5447 case CMD_DRIVER_START_TIMED_OUT: 5448 if (message.arg1 == mDriverStartToken) { 5449 if (mTries >= 2) { 5450 loge("Failed to start driver after " + mTries); 5451 transitionTo(mDriverStoppedState); 5452 } else { 5453 loge("Driver start failed, retrying"); 5454 mWakeLock.acquire(); 5455 mWifiNative.startDriver(); 5456 mWakeLock.release(); 5457 5458 ++mTries; 5459 /* Send ourselves a delayed message to start driver again */ 5460 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5461 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5462 } 5463 } 5464 break; 5465 /* Queue driver commands & connection events */ 5466 case CMD_START_DRIVER: 5467 case CMD_STOP_DRIVER: 5468 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5469 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5470 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5471 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5472 case WifiMonitor.WPS_OVERLAP_EVENT: 5473 case CMD_SET_COUNTRY_CODE: 5474 case CMD_SET_FREQUENCY_BAND: 5475 case CMD_START_PACKET_FILTERING: 5476 case CMD_STOP_PACKET_FILTERING: 5477 case CMD_START_SCAN: 5478 case CMD_DISCONNECT: 5479 case CMD_REASSOCIATE: 5480 case CMD_RECONNECT: 5481 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5482 deferMessage(message); 5483 break; 5484 case WifiMonitor.SCAN_RESULTS_EVENT: 5485 // Loose scan results obtained in Driver Starting state, they can only confuse 5486 // the state machine 5487 break; 5488 default: 5489 return NOT_HANDLED; 5490 } 5491 return HANDLED; 5492 } 5493 } 5494 5495 class DriverStartedState extends State { 5496 @Override 5497 public void enter() { 5498 5499 if (PDBG) { 5500 loge("DriverStartedState enter"); 5501 } 5502 mIsRunning = true; 5503 mInDelayedStop = false; 5504 mDelayedStopCounter++; 5505 updateBatteryWorkSource(null); 5506 /** 5507 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 5508 * When this mode is on, some of the low-level scan parameters used by the 5509 * driver are changed to reduce interference with bluetooth 5510 */ 5511 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5512 /* set frequency band of operation */ 5513 setFrequencyBand(); 5514 /* initialize network state */ 5515 setNetworkDetailedState(DetailedState.DISCONNECTED); 5516 5517 /* Remove any filtering on Multicast v6 at start */ 5518 mWifiNative.stopFilteringMulticastV6Packets(); 5519 5520 /* Reset Multicast v4 filtering state */ 5521 if (mFilteringMulticastV4Packets.get()) { 5522 mWifiNative.startFilteringMulticastV4Packets(); 5523 } else { 5524 mWifiNative.stopFilteringMulticastV4Packets(); 5525 } 5526 5527 mDhcpActive = false; 5528 5529 startBatchedScan(); 5530 5531 if (mOperationalMode != CONNECT_MODE) { 5532 mWifiNative.disconnect(); 5533 mWifiConfigStore.disableAllNetworks(); 5534 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5535 setWifiState(WIFI_STATE_DISABLED); 5536 } 5537 transitionTo(mScanModeState); 5538 } else { 5539 5540 // Status pulls in the current supplicant state and network connection state 5541 // events over the monitor connection. This helps framework sync up with 5542 // current supplicant state 5543 // TODO: actually check th supplicant status string and make sure the supplicant 5544 // is in disconnecte4d state. 5545 mWifiNative.status(); 5546 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 5547 transitionTo(mDisconnectedState); 5548 } 5549 5550 // We may have missed screen update at boot 5551 if (mScreenBroadcastReceived.get() == false) { 5552 PowerManager powerManager = (PowerManager)mContext.getSystemService( 5553 Context.POWER_SERVICE); 5554 handleScreenStateChanged(powerManager.isScreenOn(), 5555 /* startBackgroundScanIfNeeded = */ false); 5556 } else { 5557 // Set the right suspend mode settings 5558 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 5559 && mUserWantsSuspendOpt.get()); 5560 } 5561 mWifiNative.setPowerSave(true); 5562 5563 if (mP2pSupported) { 5564 if (mOperationalMode == CONNECT_MODE) { 5565 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 5566 } else { 5567 // P2P statemachine starts in disabled state, and is not enabled until 5568 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 5569 // keep it disabled. 5570 } 5571 } 5572 5573 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5574 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5575 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 5576 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5577 5578 if (PDBG) { 5579 loge("Driverstarted State enter done"); 5580 } 5581 } 5582 5583 @Override 5584 public boolean processMessage(Message message) { 5585 logStateAndMessage(message, getClass().getSimpleName()); 5586 5587 switch(message.what) { 5588 case CMD_START_SCAN: 5589 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5590 break; 5591 case CMD_SET_BATCHED_SCAN: 5592 if (recordBatchedScanSettings(message.arg1, message.arg2, 5593 (Bundle) message.obj)) { 5594 if (mBatchedScanSettings != null) { 5595 startBatchedScan(); 5596 } else { 5597 stopBatchedScan(); 5598 } 5599 } 5600 break; 5601 case CMD_SET_FREQUENCY_BAND: 5602 int band = message.arg1; 5603 if (DBG) log("set frequency band " + band); 5604 if (mWifiNative.setBand(band)) { 5605 5606 if (PDBG) loge("did set frequency band " + band); 5607 5608 mFrequencyBand.set(band); 5609 // Flush old data - like scan results 5610 mWifiNative.bssFlush(); 5611 // Fetch the latest scan results when frequency band is set 5612 startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 5613 5614 if (PDBG) loge("done set frequency band " + band); 5615 5616 } else { 5617 loge("Failed to set frequency band " + band); 5618 } 5619 break; 5620 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5621 mBluetoothConnectionActive = (message.arg1 != 5622 BluetoothAdapter.STATE_DISCONNECTED); 5623 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5624 break; 5625 case CMD_STOP_DRIVER: 5626 int mode = message.arg1; 5627 5628 /* Already doing a delayed stop */ 5629 if (mInDelayedStop) { 5630 if (DBG) log("Already in delayed stop"); 5631 break; 5632 } 5633 /* disconnect right now, but leave the driver running for a bit */ 5634 mWifiConfigStore.disableAllNetworks(); 5635 5636 mInDelayedStop = true; 5637 mDelayedStopCounter++; 5638 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 5639 5640 /* send regular delayed shut down */ 5641 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 5642 driverStopIntent.setPackage(this.getClass().getPackage().getName()); 5643 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 5644 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 5645 DRIVER_STOP_REQUEST, driverStopIntent, 5646 PendingIntent.FLAG_UPDATE_CURRENT); 5647 5648 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 5649 + mDriverStopDelayMs, mDriverStopIntent); 5650 break; 5651 case CMD_START_DRIVER: 5652 if (mInDelayedStop) { 5653 mInDelayedStop = false; 5654 mDelayedStopCounter++; 5655 mAlarmManager.cancel(mDriverStopIntent); 5656 if (DBG) log("Delayed stop ignored due to start"); 5657 if (mOperationalMode == CONNECT_MODE) { 5658 mWifiConfigStore.enableAllNetworks(); 5659 } 5660 } 5661 break; 5662 case CMD_DELAYED_STOP_DRIVER: 5663 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 5664 if (message.arg1 != mDelayedStopCounter) break; 5665 if (getCurrentState() != mDisconnectedState) { 5666 mWifiNative.disconnect(); 5667 handleNetworkDisconnect(); 5668 } 5669 mWakeLock.acquire(); 5670 mWifiNative.stopDriver(); 5671 mWakeLock.release(); 5672 if (mP2pSupported) { 5673 transitionTo(mWaitForP2pDisableState); 5674 } else { 5675 transitionTo(mDriverStoppingState); 5676 } 5677 break; 5678 case CMD_START_PACKET_FILTERING: 5679 if (message.arg1 == MULTICAST_V6) { 5680 mWifiNative.startFilteringMulticastV6Packets(); 5681 } else if (message.arg1 == MULTICAST_V4) { 5682 mWifiNative.startFilteringMulticastV4Packets(); 5683 } else { 5684 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 5685 } 5686 break; 5687 case CMD_STOP_PACKET_FILTERING: 5688 if (message.arg1 == MULTICAST_V6) { 5689 mWifiNative.stopFilteringMulticastV6Packets(); 5690 } else if (message.arg1 == MULTICAST_V4) { 5691 mWifiNative.stopFilteringMulticastV4Packets(); 5692 } else { 5693 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 5694 } 5695 break; 5696 case CMD_SET_SUSPEND_OPT_ENABLED: 5697 if (message.arg1 == 1) { 5698 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 5699 mSuspendWakeLock.release(); 5700 } else { 5701 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 5702 } 5703 break; 5704 case CMD_SET_HIGH_PERF_MODE: 5705 if (message.arg1 == 1) { 5706 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 5707 } else { 5708 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 5709 } 5710 break; 5711 case CMD_ENABLE_TDLS: 5712 if (message.obj != null) { 5713 String remoteAddress = (String) message.obj; 5714 boolean enable = (message.arg1 == 1); 5715 mWifiNative.startTdls(remoteAddress, enable); 5716 } 5717 break; 5718 default: 5719 return NOT_HANDLED; 5720 } 5721 return HANDLED; 5722 } 5723 @Override 5724 public void exit() { 5725 mIsRunning = false; 5726 updateBatteryWorkSource(null); 5727 mScanResults = new ArrayList<>(); 5728 5729 stopBatchedScan(); 5730 5731 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5732 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5733 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 5734 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5735 noteScanEnd(); // wrap up any pending request. 5736 mBufferedScanMsg.clear(); 5737 } 5738 } 5739 5740 class WaitForP2pDisableState extends State { 5741 private State mTransitionToState; 5742 @Override 5743 public void enter() { 5744 switch (getCurrentMessage().what) { 5745 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5746 mTransitionToState = mInitialState; 5747 break; 5748 case CMD_DELAYED_STOP_DRIVER: 5749 mTransitionToState = mDriverStoppingState; 5750 break; 5751 case CMD_STOP_SUPPLICANT: 5752 mTransitionToState = mSupplicantStoppingState; 5753 break; 5754 default: 5755 mTransitionToState = mDriverStoppingState; 5756 break; 5757 } 5758 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 5759 } 5760 @Override 5761 public boolean processMessage(Message message) { 5762 logStateAndMessage(message, getClass().getSimpleName()); 5763 5764 switch(message.what) { 5765 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 5766 transitionTo(mTransitionToState); 5767 break; 5768 /* Defer wifi start/shut and driver commands */ 5769 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5770 case CMD_START_SUPPLICANT: 5771 case CMD_STOP_SUPPLICANT: 5772 case CMD_START_AP: 5773 case CMD_STOP_AP: 5774 case CMD_START_DRIVER: 5775 case CMD_STOP_DRIVER: 5776 case CMD_SET_OPERATIONAL_MODE: 5777 case CMD_SET_COUNTRY_CODE: 5778 case CMD_SET_FREQUENCY_BAND: 5779 case CMD_START_PACKET_FILTERING: 5780 case CMD_STOP_PACKET_FILTERING: 5781 case CMD_START_SCAN: 5782 case CMD_DISCONNECT: 5783 case CMD_REASSOCIATE: 5784 case CMD_RECONNECT: 5785 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5786 deferMessage(message); 5787 break; 5788 default: 5789 return NOT_HANDLED; 5790 } 5791 return HANDLED; 5792 } 5793 } 5794 5795 class DriverStoppingState extends State { 5796 @Override 5797 public boolean processMessage(Message message) { 5798 logStateAndMessage(message, getClass().getSimpleName()); 5799 5800 switch(message.what) { 5801 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5802 SupplicantState state = handleSupplicantStateChange(message); 5803 if (state == SupplicantState.INTERFACE_DISABLED) { 5804 transitionTo(mDriverStoppedState); 5805 } 5806 break; 5807 /* Queue driver commands */ 5808 case CMD_START_DRIVER: 5809 case CMD_STOP_DRIVER: 5810 case CMD_SET_COUNTRY_CODE: 5811 case CMD_SET_FREQUENCY_BAND: 5812 case CMD_START_PACKET_FILTERING: 5813 case CMD_STOP_PACKET_FILTERING: 5814 case CMD_START_SCAN: 5815 case CMD_DISCONNECT: 5816 case CMD_REASSOCIATE: 5817 case CMD_RECONNECT: 5818 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5819 deferMessage(message); 5820 break; 5821 default: 5822 return NOT_HANDLED; 5823 } 5824 return HANDLED; 5825 } 5826 } 5827 5828 class DriverStoppedState extends State { 5829 @Override 5830 public boolean processMessage(Message message) { 5831 logStateAndMessage(message, getClass().getSimpleName()); 5832 switch (message.what) { 5833 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5834 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 5835 SupplicantState state = stateChangeResult.state; 5836 // A WEXT bug means that we can be back to driver started state 5837 // unexpectedly 5838 if (SupplicantState.isDriverActive(state)) { 5839 transitionTo(mDriverStartedState); 5840 } 5841 break; 5842 case CMD_START_DRIVER: 5843 mWakeLock.acquire(); 5844 mWifiNative.startDriver(); 5845 mWakeLock.release(); 5846 transitionTo(mDriverStartingState); 5847 break; 5848 default: 5849 return NOT_HANDLED; 5850 } 5851 return HANDLED; 5852 } 5853 } 5854 5855 class ScanModeState extends State { 5856 private int mLastOperationMode; 5857 @Override 5858 public void enter() { 5859 mLastOperationMode = mOperationalMode; 5860 } 5861 @Override 5862 public boolean processMessage(Message message) { 5863 logStateAndMessage(message, getClass().getSimpleName()); 5864 5865 switch(message.what) { 5866 case CMD_SET_OPERATIONAL_MODE: 5867 if (message.arg1 == CONNECT_MODE) { 5868 5869 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5870 setWifiState(WIFI_STATE_ENABLED); 5871 // Load and re-enable networks when going back to enabled state 5872 // This is essential for networks to show up after restore 5873 mWifiConfigStore.loadAndEnableAllNetworks(); 5874 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 5875 } else { 5876 mWifiConfigStore.enableAllNetworks(); 5877 } 5878 5879 // Try autojoining with recent network already present in the cache 5880 // If none are found then trigger a scan which will trigger autojoin 5881 // upon reception of scan results event 5882 if (!mWifiAutoJoinController.attemptAutoJoin()) { 5883 startScan(ENABLE_WIFI, 0, null, null); 5884 } 5885 5886 // Loose last selection choice since user toggled WiFi 5887 mWifiConfigStore. 5888 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5889 5890 mOperationalMode = CONNECT_MODE; 5891 transitionTo(mDisconnectedState); 5892 } else { 5893 // Nothing to do 5894 return HANDLED; 5895 } 5896 break; 5897 // Handle scan. All the connection related commands are 5898 // handled only in ConnectModeState 5899 case CMD_START_SCAN: 5900 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5901 break; 5902 default: 5903 return NOT_HANDLED; 5904 } 5905 return HANDLED; 5906 } 5907 } 5908 5909 5910 String smToString(Message message) { 5911 return smToString(message.what); 5912 } 5913 5914 String smToString(int what) { 5915 String s = "unknown"; 5916 switch (what) { 5917 case WifiMonitor.DRIVER_HUNG_EVENT: 5918 s = "DRIVER_HUNG_EVENT"; 5919 break; 5920 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 5921 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 5922 break; 5923 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 5924 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 5925 break; 5926 case CMD_SET_FREQUENCY_BAND: 5927 s = "CMD_SET_FREQUENCY_BAND"; 5928 break; 5929 case CMD_DELAYED_NETWORK_DISCONNECT: 5930 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 5931 break; 5932 case CMD_TEST_NETWORK_DISCONNECT: 5933 s = "CMD_TEST_NETWORK_DISCONNECT"; 5934 break; 5935 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5936 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 5937 break; 5938 case CMD_DISABLE_EPHEMERAL_NETWORK: 5939 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 5940 break; 5941 case CMD_START_DRIVER: 5942 s = "CMD_START_DRIVER"; 5943 break; 5944 case CMD_STOP_DRIVER: 5945 s = "CMD_STOP_DRIVER"; 5946 break; 5947 case CMD_STOP_SUPPLICANT: 5948 s = "CMD_STOP_SUPPLICANT"; 5949 break; 5950 case CMD_STOP_SUPPLICANT_FAILED: 5951 s = "CMD_STOP_SUPPLICANT_FAILED"; 5952 break; 5953 case CMD_START_SUPPLICANT: 5954 s = "CMD_START_SUPPLICANT"; 5955 break; 5956 case CMD_REQUEST_AP_CONFIG: 5957 s = "CMD_REQUEST_AP_CONFIG"; 5958 break; 5959 case CMD_RESPONSE_AP_CONFIG: 5960 s = "CMD_RESPONSE_AP_CONFIG"; 5961 break; 5962 case CMD_TETHER_STATE_CHANGE: 5963 s = "CMD_TETHER_STATE_CHANGE"; 5964 break; 5965 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5966 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 5967 break; 5968 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5969 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 5970 break; 5971 case CMD_ADD_OR_UPDATE_NETWORK: 5972 s = "CMD_ADD_OR_UPDATE_NETWORK"; 5973 break; 5974 case CMD_REMOVE_NETWORK: 5975 s = "CMD_REMOVE_NETWORK"; 5976 break; 5977 case CMD_ENABLE_NETWORK: 5978 s = "CMD_ENABLE_NETWORK"; 5979 break; 5980 case CMD_ENABLE_ALL_NETWORKS: 5981 s = "CMD_ENABLE_ALL_NETWORKS"; 5982 break; 5983 case CMD_AUTO_CONNECT: 5984 s = "CMD_AUTO_CONNECT"; 5985 break; 5986 case CMD_AUTO_ROAM: 5987 s = "CMD_AUTO_ROAM"; 5988 break; 5989 case CMD_AUTO_SAVE_NETWORK: 5990 s = "CMD_AUTO_SAVE_NETWORK"; 5991 break; 5992 case CMD_BOOT_COMPLETED: 5993 s = "CMD_BOOT_COMPLETED"; 5994 break; 5995 case DhcpStateMachine.CMD_START_DHCP: 5996 s = "CMD_START_DHCP"; 5997 break; 5998 case DhcpStateMachine.CMD_STOP_DHCP: 5999 s = "CMD_STOP_DHCP"; 6000 break; 6001 case DhcpStateMachine.CMD_RENEW_DHCP: 6002 s = "CMD_RENEW_DHCP"; 6003 break; 6004 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6005 s = "CMD_PRE_DHCP_ACTION"; 6006 break; 6007 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6008 s = "CMD_POST_DHCP_ACTION"; 6009 break; 6010 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6011 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6012 break; 6013 case DhcpStateMachine.CMD_ON_QUIT: 6014 s = "CMD_ON_QUIT"; 6015 break; 6016 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6017 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6018 break; 6019 case WifiManager.DISABLE_NETWORK: 6020 s = "WifiManager.DISABLE_NETWORK"; 6021 break; 6022 case CMD_BLACKLIST_NETWORK: 6023 s = "CMD_BLACKLIST_NETWORK"; 6024 break; 6025 case CMD_CLEAR_BLACKLIST: 6026 s = "CMD_CLEAR_BLACKLIST"; 6027 break; 6028 case CMD_SAVE_CONFIG: 6029 s = "CMD_SAVE_CONFIG"; 6030 break; 6031 case CMD_GET_CONFIGURED_NETWORKS: 6032 s = "CMD_GET_CONFIGURED_NETWORKS"; 6033 break; 6034 case CMD_GET_SUPPORTED_FEATURES: 6035 s = "CMD_GET_ADAPTORS"; 6036 break; 6037 case CMD_UNWANTED_NETWORK: 6038 s = "CMD_UNWANTED_NETWORK"; 6039 break; 6040 case CMD_NETWORK_STATUS: 6041 s = "CMD_NETWORK_STATUS"; 6042 break; 6043 case CMD_GET_LINK_LAYER_STATS: 6044 s = "CMD_GET_LINK_LAYER_STATS"; 6045 break; 6046 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6047 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6048 break; 6049 case CMD_DISCONNECT: 6050 s = "CMD_DISCONNECT"; 6051 break; 6052 case CMD_RECONNECT: 6053 s = "CMD_RECONNECT"; 6054 break; 6055 case CMD_REASSOCIATE: 6056 s = "CMD_REASSOCIATE"; 6057 break; 6058 case CMD_GET_CONNECTION_STATISTICS: 6059 s = "CMD_GET_CONNECTION_STATISTICS"; 6060 break; 6061 case CMD_SET_HIGH_PERF_MODE: 6062 s = "CMD_SET_HIGH_PERF_MODE"; 6063 break; 6064 case CMD_SET_COUNTRY_CODE: 6065 s = "CMD_SET_COUNTRY_CODE"; 6066 break; 6067 case CMD_ENABLE_RSSI_POLL: 6068 s = "CMD_ENABLE_RSSI_POLL"; 6069 break; 6070 case CMD_RSSI_POLL: 6071 s = "CMD_RSSI_POLL"; 6072 break; 6073 case CMD_START_PACKET_FILTERING: 6074 s = "CMD_START_PACKET_FILTERING"; 6075 break; 6076 case CMD_STOP_PACKET_FILTERING: 6077 s = "CMD_STOP_PACKET_FILTERING"; 6078 break; 6079 case CMD_SET_SUSPEND_OPT_ENABLED: 6080 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6081 break; 6082 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6083 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6084 break; 6085 case CMD_SET_BATCHED_SCAN: 6086 s = "CMD_SET_BATCHED_SCAN"; 6087 break; 6088 case CMD_START_NEXT_BATCHED_SCAN: 6089 s = "CMD_START_NEXT_BATCHED_SCAN"; 6090 break; 6091 case CMD_POLL_BATCHED_SCAN: 6092 s = "CMD_POLL_BATCHED_SCAN"; 6093 break; 6094 case CMD_UPDATE_LINKPROPERTIES: 6095 s = "CMD_UPDATE_LINKPROPERTIES"; 6096 break; 6097 case CMD_RELOAD_TLS_AND_RECONNECT: 6098 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6099 break; 6100 case WifiManager.CONNECT_NETWORK: 6101 s = "CONNECT_NETWORK"; 6102 break; 6103 case WifiManager.SAVE_NETWORK: 6104 s = "SAVE_NETWORK"; 6105 break; 6106 case WifiManager.FORGET_NETWORK: 6107 s = "FORGET_NETWORK"; 6108 break; 6109 case WifiMonitor.SUP_CONNECTION_EVENT: 6110 s = "SUP_CONNECTION_EVENT"; 6111 break; 6112 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6113 s = "SUP_DISCONNECTION_EVENT"; 6114 break; 6115 case WifiMonitor.SCAN_RESULTS_EVENT: 6116 s = "SCAN_RESULTS_EVENT"; 6117 break; 6118 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6119 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6120 break; 6121 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6122 s = "AUTHENTICATION_FAILURE_EVENT"; 6123 break; 6124 case WifiMonitor.SSID_TEMP_DISABLED: 6125 s = "SSID_TEMP_DISABLED"; 6126 break; 6127 case WifiMonitor.SSID_REENABLED: 6128 s = "SSID_REENABLED"; 6129 break; 6130 case WifiMonitor.WPS_SUCCESS_EVENT: 6131 s = "WPS_SUCCESS_EVENT"; 6132 break; 6133 case WifiMonitor.WPS_FAIL_EVENT: 6134 s = "WPS_FAIL_EVENT"; 6135 break; 6136 case WifiMonitor.SUP_REQUEST_IDENTITY: 6137 s = "SUP_REQUEST_IDENTITY"; 6138 break; 6139 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6140 s = "NETWORK_CONNECTION_EVENT"; 6141 break; 6142 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6143 s = "NETWORK_DISCONNECTION_EVENT"; 6144 break; 6145 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6146 s = "ASSOCIATION_REJECTION_EVENT"; 6147 break; 6148 case CMD_SET_OPERATIONAL_MODE: 6149 s = "CMD_SET_OPERATIONAL_MODE"; 6150 break; 6151 case CMD_START_SCAN: 6152 s = "CMD_START_SCAN"; 6153 break; 6154 case CMD_DISABLE_P2P_RSP: 6155 s = "CMD_DISABLE_P2P_RSP"; 6156 break; 6157 case CMD_DISABLE_P2P_REQ: 6158 s = "CMD_DISABLE_P2P_REQ"; 6159 break; 6160 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6161 s = "GOOD_LINK_DETECTED"; 6162 break; 6163 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6164 s = "POOR_LINK_DETECTED"; 6165 break; 6166 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6167 s = "GROUP_CREATING_TIMED_OUT"; 6168 break; 6169 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6170 s = "P2P_CONNECTION_CHANGED"; 6171 break; 6172 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6173 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6174 break; 6175 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6176 s = "P2P.SET_MIRACAST_MODE"; 6177 break; 6178 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6179 s = "P2P.BLOCK_DISCOVERY"; 6180 break; 6181 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6182 s = "P2P.SET_COUNTRY_CODE"; 6183 break; 6184 case WifiManager.CANCEL_WPS: 6185 s = "CANCEL_WPS"; 6186 break; 6187 case WifiManager.CANCEL_WPS_FAILED: 6188 s = "CANCEL_WPS_FAILED"; 6189 break; 6190 case WifiManager.CANCEL_WPS_SUCCEDED: 6191 s = "CANCEL_WPS_SUCCEDED"; 6192 break; 6193 case WifiManager.START_WPS: 6194 s = "START_WPS"; 6195 break; 6196 case WifiManager.START_WPS_SUCCEEDED: 6197 s = "START_WPS_SUCCEEDED"; 6198 break; 6199 case WifiManager.WPS_FAILED: 6200 s = "WPS_FAILED"; 6201 break; 6202 case WifiManager.WPS_COMPLETED: 6203 s = "WPS_COMPLETED"; 6204 break; 6205 case WifiManager.RSSI_PKTCNT_FETCH: 6206 s = "RSSI_PKTCNT_FETCH"; 6207 break; 6208 case CMD_IP_CONFIGURATION_LOST: 6209 s = "CMD_IP_CONFIGURATION_LOST"; 6210 break; 6211 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6212 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6213 break; 6214 case CMD_STATIC_IP_SUCCESS: 6215 s = "CMD_STATIC_IP_SUCCESSFUL"; 6216 break; 6217 case CMD_STATIC_IP_FAILURE: 6218 s = "CMD_STATIC_IP_FAILURE"; 6219 break; 6220 case DhcpStateMachine.DHCP_SUCCESS: 6221 s = "DHCP_SUCCESS"; 6222 break; 6223 case DhcpStateMachine.DHCP_FAILURE: 6224 s = "DHCP_FAILURE"; 6225 break; 6226 case CMD_TARGET_BSSID: 6227 s = "CMD_TARGET_BSSID"; 6228 break; 6229 case CMD_ASSOCIATED_BSSID: 6230 s = "CMD_ASSOCIATED_BSSID"; 6231 break; 6232 case CMD_ROAM_WATCHDOG_TIMER: 6233 s = "CMD_ROAM_WATCHDOG_TIMER"; 6234 break; 6235 case CMD_SCREEN_STATE_CHANGED: 6236 s = "CMD_SCREEN_STATE_CHANGED"; 6237 break; 6238 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6239 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6240 break; 6241 default: 6242 s = "what:" + Integer.toString(what); 6243 break; 6244 } 6245 return s; 6246 } 6247 6248 void registerConnected() { 6249 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6250 long now_ms = System.currentTimeMillis(); 6251 // We are switching away from this configuration, 6252 // hence record the time we were connected last 6253 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6254 if (config != null) { 6255 config.lastConnected = System.currentTimeMillis(); 6256 config.autoJoinBailedDueToLowRssi = false; 6257 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 6258 config.numConnectionFailures = 0; 6259 config.numIpConfigFailures = 0; 6260 config.numAuthFailures = 0; 6261 config.numAssociation++; 6262 } 6263 mBadLinkspeedcount = 0; 6264 } 6265 } 6266 6267 void registerDisconnected() { 6268 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6269 long now_ms = System.currentTimeMillis(); 6270 // We are switching away from this configuration, 6271 // hence record the time we were connected last 6272 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6273 if (config != null) { 6274 config.lastDisconnected = System.currentTimeMillis(); 6275 if (config.ephemeral) { 6276 // Remove ephemeral WifiConfigurations from file 6277 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6278 } 6279 } 6280 } 6281 } 6282 6283 void noteWifiDisabledWhileAssociated() { 6284 // We got disabled by user while we were associated, make note of it 6285 int rssi = mWifiInfo.getRssi(); 6286 WifiConfiguration config = getCurrentWifiConfiguration(); 6287 if (getCurrentState() == mConnectedState 6288 && rssi != WifiInfo.INVALID_RSSI 6289 && config != null) { 6290 boolean is24GHz = mWifiInfo.is24GHz(); 6291 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 6292 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 6293 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 6294 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 6295 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 6296 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 6297 if (isBadRSSI) { 6298 // Take note that we got disabled while RSSI was Bad 6299 config.numUserTriggeredWifiDisableLowRSSI++; 6300 } else if (isLowRSSI) { 6301 // Take note that we got disabled while RSSI was Low 6302 config.numUserTriggeredWifiDisableBadRSSI++; 6303 } else if (!isHighRSSI) { 6304 // Take note that we got disabled while RSSI was Not high 6305 config.numUserTriggeredWifiDisableNotHighRSSI++; 6306 } 6307 } 6308 } 6309 6310 WifiConfiguration getCurrentWifiConfiguration() { 6311 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6312 return null; 6313 } 6314 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6315 } 6316 6317 ScanResult getCurrentScanResult() { 6318 WifiConfiguration config = getCurrentWifiConfiguration(); 6319 if (config == null) { 6320 return null; 6321 } 6322 String BSSID = mWifiInfo.getBSSID(); 6323 if (BSSID == null) { 6324 BSSID = mTargetRoamBSSID; 6325 } 6326 if (config.scanResultCache == null) { 6327 return null; 6328 } 6329 return config.scanResultCache.get(BSSID); 6330 } 6331 6332 String getCurrentBSSID() { 6333 if (linkDebouncing) { 6334 return null; 6335 } 6336 return mLastBssid; 6337 } 6338 6339 class ConnectModeState extends State { 6340 @Override 6341 public boolean processMessage(Message message) { 6342 WifiConfiguration config; 6343 int netId; 6344 boolean ok; 6345 boolean didDisconnect; 6346 String bssid; 6347 String ssid; 6348 NetworkUpdateResult result; 6349 logStateAndMessage(message, getClass().getSimpleName()); 6350 6351 switch (message.what) { 6352 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6353 didBlackListBSSID = false; 6354 bssid = (String) message.obj; 6355 if (bssid == null || TextUtils.isEmpty(bssid)) { 6356 // If BSSID is null, use the target roam BSSID 6357 bssid = mTargetRoamBSSID; 6358 } 6359 if (bssid != null) { 6360 // If we have a BSSID, tell configStore to black list it 6361 synchronized(mScanResultCache) { 6362 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 6363 (mLastNetworkId, bssid, false); 6364 } 6365 } 6366 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6367 break; 6368 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6369 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6370 break; 6371 case WifiMonitor.SSID_TEMP_DISABLED: 6372 case WifiMonitor.SSID_REENABLED: 6373 String substr = (String) message.obj; 6374 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 6375 "temp-disabled" : "re-enabled"; 6376 loge("ConnectModeState SSID state=" + en + " nid=" 6377 + Integer.toString(message.arg1) + " [" + substr + "]"); 6378 synchronized(mScanResultCache) { 6379 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 6380 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 6381 } 6382 break; 6383 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6384 SupplicantState state = handleSupplicantStateChange(message); 6385 // A driver/firmware hang can now put the interface in a down state. 6386 // We detect the interface going down and recover from it 6387 if (!SupplicantState.isDriverActive(state)) { 6388 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6389 handleNetworkDisconnect(); 6390 } 6391 log("Detected an interface down, restart driver"); 6392 transitionTo(mDriverStoppedState); 6393 sendMessage(CMD_START_DRIVER); 6394 break; 6395 } 6396 6397 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 6398 // when authentication times out after a successful connection, 6399 // we can figure this from the supplicant state. If supplicant 6400 // state is DISCONNECTED, but the mNetworkInfo says we are not 6401 // disconnected, we need to handle a disconnection 6402 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 6403 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6404 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 6405 handleNetworkDisconnect(); 6406 transitionTo(mDisconnectedState); 6407 } 6408 break; 6409 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6410 if (message.arg1 == 1) { 6411 mWifiNative.disconnect(); 6412 mTemporarilyDisconnectWifi = true; 6413 } else { 6414 mWifiNative.reconnect(); 6415 mTemporarilyDisconnectWifi = false; 6416 } 6417 break; 6418 case CMD_ADD_OR_UPDATE_NETWORK: 6419 config = (WifiConfiguration) message.obj; 6420 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 6421 if (res < 0) { 6422 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6423 } else { 6424 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 6425 if (curConfig != null && config != null) { 6426 if (curConfig.priority < config.priority 6427 && config.status == WifiConfiguration.Status.ENABLED) { 6428 // Interpret this as a connect attempt 6429 // Set the last selected configuration so as to allow the system to 6430 // stick the last user choice without persisting the choice 6431 mWifiConfigStore.setLastSelectedConfiguration(res); 6432 6433 // Remember time of last connection attempt 6434 lastConnectAttempt = System.currentTimeMillis(); 6435 6436 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6437 6438 // As a courtesy to the caller, trigger a scan now 6439 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 6440 } 6441 } 6442 } 6443 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 6444 break; 6445 case CMD_REMOVE_NETWORK: 6446 ok = mWifiConfigStore.removeNetwork(message.arg1); 6447 if (!ok) { 6448 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6449 } 6450 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6451 break; 6452 case CMD_ENABLE_NETWORK: 6453 boolean others = message.arg2 == 1; 6454 // Tell autojoin the user did try to select to that network 6455 // However, do NOT persist the choice by bumping the priority of the network 6456 if (others) { 6457 mWifiAutoJoinController. 6458 updateConfigurationHistory(message.arg1, true, false); 6459 // Set the last selected configuration so as to allow the system to 6460 // stick the last user choice without persisting the choice 6461 mWifiConfigStore.setLastSelectedConfiguration(message.arg1); 6462 6463 // Remember time of last connection attempt 6464 lastConnectAttempt = System.currentTimeMillis(); 6465 6466 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6467 } 6468 // Cancel auto roam requests 6469 autoRoamSetBSSID(message.arg1, "any"); 6470 6471 ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1); 6472 if (!ok) { 6473 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6474 } 6475 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6476 break; 6477 case CMD_ENABLE_ALL_NETWORKS: 6478 long time = android.os.SystemClock.elapsedRealtime(); 6479 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 6480 mWifiConfigStore.enableAllNetworks(); 6481 mLastEnableAllNetworksTime = time; 6482 } 6483 break; 6484 case WifiManager.DISABLE_NETWORK: 6485 if (mWifiConfigStore.disableNetwork(message.arg1, 6486 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 6487 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 6488 } else { 6489 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6490 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 6491 WifiManager.ERROR); 6492 } 6493 break; 6494 case CMD_DISABLE_EPHEMERAL_NETWORK: 6495 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 6496 if (config != null) { 6497 if (config.networkId == mLastNetworkId) { 6498 // Disconnect and let autojoin reselect a new network 6499 sendMessage(CMD_DISCONNECT); 6500 } 6501 } 6502 break; 6503 case CMD_BLACKLIST_NETWORK: 6504 mWifiNative.addToBlacklist((String) message.obj); 6505 break; 6506 case CMD_CLEAR_BLACKLIST: 6507 mWifiNative.clearBlacklist(); 6508 break; 6509 case CMD_SAVE_CONFIG: 6510 ok = mWifiConfigStore.saveConfig(); 6511 6512 if (DBG) loge("wifistatemachine did save config " + ok); 6513 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 6514 6515 // Inform the backup manager about a data change 6516 IBackupManager ibm = IBackupManager.Stub.asInterface( 6517 ServiceManager.getService(Context.BACKUP_SERVICE)); 6518 if (ibm != null) { 6519 try { 6520 ibm.dataChanged("com.android.providers.settings"); 6521 } catch (Exception e) { 6522 // Try again later 6523 } 6524 } 6525 break; 6526 case CMD_GET_CONFIGURED_NETWORKS: 6527 replyToMessage(message, message.what, 6528 mWifiConfigStore.getConfiguredNetworks()); 6529 break; 6530 case WifiMonitor.SUP_REQUEST_IDENTITY: 6531 // Supplicant lacks credentials to connect to that network, hence black list 6532 ssid = (String) message.obj; 6533 6534 if (targetWificonfiguration != null && ssid != null 6535 && targetWificonfiguration.SSID != null 6536 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 6537 mWifiConfigStore.handleSSIDStateChange(targetWificonfiguration.networkId, 6538 false, "AUTH_FAILED no identity", null); 6539 } 6540 // Disconnect now, as we don't have any way to fullfill the supplicant request. 6541 mWifiConfigStore.setLastSelectedConfiguration 6542 (WifiConfiguration.INVALID_NETWORK_ID); 6543 mWifiNative.disconnect(); 6544 break; 6545 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 6546 logd("Received SUP_REQUEST_SIM_AUTH"); 6547 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 6548 if (requestData != null) { 6549 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 6550 handleGsmAuthRequest(requestData); 6551 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA) { 6552 handle3GAuthRequest(requestData); 6553 } 6554 } else { 6555 loge("Invalid sim auth request"); 6556 } 6557 break; 6558 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6559 replyToMessage(message, message.what, 6560 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 6561 break; 6562 /* Do a redundant disconnect without transition */ 6563 case CMD_DISCONNECT: 6564 mWifiConfigStore.setLastSelectedConfiguration 6565 (WifiConfiguration.INVALID_NETWORK_ID); 6566 mWifiNative.disconnect(); 6567 break; 6568 case CMD_RECONNECT: 6569 mWifiAutoJoinController.attemptAutoJoin(); 6570 break; 6571 case CMD_REASSOCIATE: 6572 lastConnectAttempt = System.currentTimeMillis(); 6573 mWifiNative.reassociate(); 6574 break; 6575 case CMD_RELOAD_TLS_AND_RECONNECT: 6576 if (mWifiConfigStore.needsUnlockedKeyStore()) { 6577 logd("Reconnecting to give a chance to un-connected TLS networks"); 6578 mWifiNative.disconnect(); 6579 lastConnectAttempt = System.currentTimeMillis(); 6580 mWifiNative.reconnect(); 6581 } 6582 break; 6583 case CMD_AUTO_ROAM: 6584 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 6585 return HANDLED; 6586 case CMD_AUTO_CONNECT: 6587 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 6588 * associated status to the STATUS command but somehow-someplace still thinks 6589 * it is associated and thus will ignore select/reconnect command with 6590 * following message: 6591 * "Already associated with the selected network - do nothing" 6592 * 6593 * Hence, sends a disconnect to supplicant first. 6594 */ 6595 didDisconnect = false; 6596 if (getCurrentState() != mDisconnectedState) { 6597 /** Supplicant will ignore the reconnect if we are currently associated, 6598 * hence trigger a disconnect 6599 */ 6600 didDisconnect = true; 6601 mWifiNative.disconnect(); 6602 } 6603 6604 /* connect command coming from auto-join */ 6605 config = (WifiConfiguration) message.obj; 6606 netId = message.arg1; 6607 int roam = message.arg2; 6608 loge("CMD_AUTO_CONNECT sup state " 6609 + mSupplicantStateTracker.getSupplicantStateName() 6610 + " my state " + getCurrentState().getName() 6611 + " nid=" + Integer.toString(netId) 6612 + " roam=" + Integer.toString(roam)); 6613 if (config == null) { 6614 loge("AUTO_CONNECT and no config, bail out..."); 6615 break; 6616 } 6617 6618 /* Make sure we cancel any previous roam request */ 6619 autoRoamSetBSSID(netId, config.BSSID); 6620 6621 /* Save the network config */ 6622 loge("CMD_AUTO_CONNECT will save config -> " + config.SSID 6623 + " nid=" + Integer.toString(netId)); 6624 result = mWifiConfigStore.saveNetwork(config, -1); 6625 netId = result.getNetworkId(); 6626 loge("CMD_AUTO_CONNECT did save config -> " 6627 + " nid=" + Integer.toString(netId)); 6628 6629 // Make sure the network is enabled, since supplicant will not reenable it 6630 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6631 6632 if (mWifiConfigStore.selectNetwork(config) && 6633 mWifiNative.reconnect()) { 6634 lastConnectAttempt = System.currentTimeMillis(); 6635 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6636 config = mWifiConfigStore.getWifiConfiguration(netId); 6637 if (config != null 6638 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 6639 // If we autojoined a different config than the user selected one, 6640 // it means we could not see the last user selection, 6641 // or that the last user selection was faulty and ended up blacklisted 6642 // for some reason (in which case the user is notified with an error 6643 // message in the Wifi picker), and thus we managed to auto-join away 6644 // from the selected config. -> in that case we need to forget 6645 // the selection because we don't want to abruptly switch back to it. 6646 // 6647 // Note that the user selection is also forgotten after a period of time 6648 // during which the device has been disconnected. 6649 // The default value is 30 minutes : see the code path at bottom of 6650 // setScanResults() function. 6651 mWifiConfigStore. 6652 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6653 } 6654 mAutoRoaming = roam; 6655 if (isRoaming() || linkDebouncing) { 6656 transitionTo(mRoamingState); 6657 } else if (didDisconnect) { 6658 transitionTo(mDisconnectingState); 6659 } else { 6660 /* Already in disconnected state, nothing to change */ 6661 } 6662 } else { 6663 loge("Failed to connect config: " + config + " netId: " + netId); 6664 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6665 WifiManager.ERROR); 6666 break; 6667 } 6668 break; 6669 case WifiManager.CONNECT_NETWORK: 6670 /** 6671 * The connect message can contain a network id passed as arg1 on message or 6672 * or a config passed as obj on message. 6673 * For a new network, a config is passed to create and connect. 6674 * For an existing network, a network id is passed 6675 */ 6676 netId = message.arg1; 6677 config = (WifiConfiguration) message.obj; 6678 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6679 boolean updatedExisting = false; 6680 6681 /* Save the network config */ 6682 if (config != null) { 6683 String configKey = config.configKey(true /* allowCached */); 6684 WifiConfiguration savedConfig = 6685 mWifiConfigStore.getWifiConfiguration(configKey); 6686 if (savedConfig != null) { 6687 // There is an existing config with this netId, but it wasn't exposed 6688 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 6689 // getConfiguredNetworks). Remove those bits and update the config. 6690 config = savedConfig; 6691 loge("CONNECT_NETWORK updating existing config with id=" + 6692 config.networkId + " configKey=" + configKey); 6693 config.ephemeral = false; 6694 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 6695 updatedExisting = true; 6696 } 6697 6698 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 6699 netId = result.getNetworkId(); 6700 } 6701 config = mWifiConfigStore.getWifiConfiguration(netId); 6702 6703 if (config == null) { 6704 loge("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 6705 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 6706 + getCurrentState().getName()); 6707 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6708 WifiManager.ERROR); 6709 break; 6710 } else { 6711 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 6712 loge("CONNECT_NETWORK id=" + Integer.toString(netId) 6713 + " config=" + config.SSID 6714 + " cnid=" + config.networkId 6715 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 6716 + " my state " + getCurrentState().getName() 6717 + " uid = " + message.sendingUid 6718 + wasSkipped); 6719 } 6720 6721 autoRoamSetBSSID(netId, "any"); 6722 6723 if (message.sendingUid == Process.WIFI_UID 6724 || message.sendingUid == Process.SYSTEM_UID) { 6725 // As a sanity measure, clear the BSSID in the supplicant network block. 6726 // If system or Wifi Settings want to connect, they will not 6727 // specify the BSSID. 6728 // If an app however had added a BSSID to this configuration, and the BSSID 6729 // was wrong, Then we would forever fail to connect until that BSSID 6730 // is cleaned up. 6731 clearConfigBSSID(config, "CONNECT_NETWORK"); 6732 } 6733 6734 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 6735 6736 /* Tell autojoin the user did try to connect to that network */ 6737 mWifiAutoJoinController.updateConfigurationHistory(netId, true, true); 6738 6739 mWifiConfigStore.setLastSelectedConfiguration(netId); 6740 6741 didDisconnect = false; 6742 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 6743 && mLastNetworkId != netId) { 6744 /** Supplicant will ignore the reconnect if we are currently associated, 6745 * hence trigger a disconnect 6746 */ 6747 didDisconnect = true; 6748 mWifiNative.disconnect(); 6749 } 6750 6751 // Make sure the network is enabled, since supplicant will not reenable it 6752 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6753 6754 if (mWifiConfigStore.selectNetwork(config) && 6755 mWifiNative.reconnect()) { 6756 lastConnectAttempt = System.currentTimeMillis(); 6757 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6758 6759 /* The state tracker handles enabling networks upon completion/failure */ 6760 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 6761 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 6762 if (didDisconnect) { 6763 /* Expect a disconnection from the old connection */ 6764 transitionTo(mDisconnectingState); 6765 } else if (updatedExisting && getCurrentState() == mConnectedState && 6766 getCurrentWifiConfiguration().networkId == netId) { 6767 // Update the current set of network capabilities, but stay in the 6768 // current state. 6769 updateCapabilities(config); 6770 } else { 6771 /** 6772 * Directly go to disconnected state where we 6773 * process the connection events from supplicant 6774 **/ 6775 transitionTo(mDisconnectedState); 6776 } 6777 } else { 6778 loge("Failed to connect config: " + config + " netId: " + netId); 6779 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6780 WifiManager.ERROR); 6781 break; 6782 } 6783 break; 6784 case WifiManager.SAVE_NETWORK: 6785 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6786 // Fall thru 6787 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 6788 lastSavedConfigurationAttempt = null; // Used for debug 6789 config = (WifiConfiguration) message.obj; 6790 if (config == null) { 6791 loge("ERROR: SAVE_NETWORK with null configuration" 6792 + mSupplicantStateTracker.getSupplicantStateName() 6793 + " my state " + getCurrentState().getName()); 6794 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6795 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 6796 WifiManager.ERROR); 6797 break; 6798 } 6799 lastSavedConfigurationAttempt = new WifiConfiguration(config); 6800 int nid = config.networkId; 6801 loge("SAVE_NETWORK id=" + Integer.toString(nid) 6802 + " config=" + config.SSID 6803 + " nid=" + config.networkId 6804 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 6805 + " my state " + getCurrentState().getName()); 6806 6807 result = mWifiConfigStore.saveNetwork(config, -1); 6808 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 6809 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 6810 if (result.hasIpChanged()) { 6811 // The currently connection configuration was changed 6812 // We switched from DHCP to static or from static to DHCP, or the 6813 // static IP address has changed. 6814 log("Reconfiguring IP on connection"); 6815 // TODO: clear addresses and disable IPv6 6816 // to simplify obtainingIpState. 6817 transitionTo(mObtainingIpState); 6818 } 6819 if (result.hasProxyChanged()) { 6820 log("Reconfiguring proxy on connection"); 6821 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 6822 } 6823 } 6824 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 6825 if (VDBG) { 6826 loge("Success save network nid=" 6827 + Integer.toString(result.getNetworkId())); 6828 } 6829 6830 synchronized(mScanResultCache) { 6831 /** 6832 * If the command comes from WifiManager, then 6833 * tell autojoin the user did try to modify and save that network, 6834 * and interpret the SAVE_NETWORK as a request to connect 6835 */ 6836 boolean user = message.what == WifiManager.SAVE_NETWORK; 6837 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 6838 , user, true); 6839 mWifiAutoJoinController.attemptAutoJoin(); 6840 } 6841 } else { 6842 loge("Failed to save network"); 6843 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6844 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 6845 WifiManager.ERROR); 6846 } 6847 break; 6848 case WifiManager.FORGET_NETWORK: 6849 // Debug only, remember last configuration that was forgotten 6850 WifiConfiguration toRemove 6851 = mWifiConfigStore.getWifiConfiguration(message.arg1); 6852 if (toRemove == null) { 6853 lastForgetConfigurationAttempt = null; 6854 } else { 6855 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 6856 } 6857 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 6858 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 6859 } else { 6860 loge("Failed to forget network"); 6861 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 6862 WifiManager.ERROR); 6863 } 6864 break; 6865 case WifiManager.START_WPS: 6866 WpsInfo wpsInfo = (WpsInfo) message.obj; 6867 WpsResult wpsResult; 6868 switch (wpsInfo.setup) { 6869 case WpsInfo.PBC: 6870 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 6871 break; 6872 case WpsInfo.KEYPAD: 6873 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 6874 break; 6875 case WpsInfo.DISPLAY: 6876 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 6877 break; 6878 default: 6879 wpsResult = new WpsResult(Status.FAILURE); 6880 loge("Invalid setup for WPS"); 6881 break; 6882 } 6883 mWifiConfigStore.setLastSelectedConfiguration 6884 (WifiConfiguration.INVALID_NETWORK_ID); 6885 if (wpsResult.status == Status.SUCCESS) { 6886 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 6887 transitionTo(mWpsRunningState); 6888 } else { 6889 loge("Failed to start WPS with config " + wpsInfo.toString()); 6890 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 6891 } 6892 break; 6893 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6894 if (DBG) log("Network connection established"); 6895 mLastNetworkId = message.arg1; 6896 mLastBssid = (String) message.obj; 6897 6898 mWifiInfo.setBSSID(mLastBssid); 6899 mWifiInfo.setNetworkId(mLastNetworkId); 6900 6901 sendNetworkStateChangeBroadcast(mLastBssid); 6902 transitionTo(mObtainingIpState); 6903 break; 6904 case WifiMonitor.ANQP_DONE_EVENT: 6905 Log.d("HS2J", String.format("WFSM: ANQP for %016x %s", 6906 (Long)message.obj, message.arg1 != 0 ? "success" : "fail")); 6907 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6908 break; 6909 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6910 // Calling handleNetworkDisconnect here is redundant because we might already 6911 // have called it when leaving L2ConnectedState to go to disconnecting state 6912 // or thru other path 6913 // We should normally check the mWifiInfo or mLastNetworkId so as to check 6914 // if they are valid, and only in this case call handleNEtworkDisconnect, 6915 // TODO: this should be fixed for a L MR release 6916 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 6917 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 6918 // at the chip etc... 6919 if (DBG) log("ConnectModeState: Network connection lost "); 6920 handleNetworkDisconnect(); 6921 transitionTo(mDisconnectedState); 6922 break; 6923 default: 6924 return NOT_HANDLED; 6925 } 6926 return HANDLED; 6927 } 6928 } 6929 6930 private void updateCapabilities(WifiConfiguration config) { 6931 if (config.ephemeral) { 6932 mNetworkCapabilities.removeCapability( 6933 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 6934 } else { 6935 mNetworkCapabilities.addCapability( 6936 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 6937 } 6938 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 6939 } 6940 6941 private class WifiNetworkAgent extends NetworkAgent { 6942 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 6943 NetworkCapabilities nc, LinkProperties lp, int score) { 6944 super(l, c, TAG, ni, nc, lp, score); 6945 } 6946 protected void unwanted() { 6947 // Ignore if we're not the current networkAgent. 6948 if (this != mNetworkAgent) return; 6949 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 6950 + Integer.toString(mWifiInfo.score)); 6951 unwantedNetwork(network_status_unwanted_disconnect); 6952 } 6953 6954 protected void networkStatus(int status) { 6955 if (status == NetworkAgent.INVALID_NETWORK) { 6956 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 6957 + Integer.toString(mWifiInfo.score)); 6958 unwantedNetwork(network_status_unwanted_disable_autojoin); 6959 } else if (status == NetworkAgent.VALID_NETWORK) { 6960 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 6961 + Integer.toString(mWifiInfo.score)); 6962 doNetworkStatus(status); 6963 } 6964 } 6965 } 6966 6967 void unwantedNetwork(int reason) { 6968 sendMessage(CMD_UNWANTED_NETWORK, reason); 6969 } 6970 6971 void doNetworkStatus(int status) { 6972 sendMessage(CMD_NETWORK_STATUS, status); 6973 } 6974 6975 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 6976 if (config == null) 6977 return false; 6978 6979 // We are still seeing a fairly high power consumption triggered by autojoin scans 6980 // Hence do partial scans only for PSK configuration that are roamable since the 6981 // primary purpose of the partial scans is roaming. 6982 // Full badn scans with exponential backoff for the purpose or extended roaming and 6983 // network switching are performed unconditionally. 6984 if (config.scanResultCache == null 6985 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 6986 || config.scanResultCache.size() > 6) { 6987 //return true but to not trigger the scan 6988 return true; 6989 } 6990 HashSet<Integer> channels 6991 = mWifiConfigStore.makeChannelList(config, 6992 ONE_HOUR_MILLI, restrictChannelList); 6993 if (channels != null && channels.size() != 0) { 6994 StringBuilder freqs = new StringBuilder(); 6995 boolean first = true; 6996 for (Integer channel : channels) { 6997 if (!first) 6998 freqs.append(","); 6999 freqs.append(channel.toString()); 7000 first = false; 7001 } 7002 //if (DBG) { 7003 loge("WifiStateMachine starting scan for " + config.configKey() + " with " + freqs); 7004 //} 7005 // Call wifi native to start the scan 7006 if (startScanNative( 7007 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 7008 freqs.toString())) { 7009 // Only count battery consumption if scan request is accepted 7010 noteScanStart(SCAN_ALARM_SOURCE, null); 7011 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 7012 } else { 7013 // used for debug only, mark scan as failed 7014 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7015 } 7016 return true; 7017 } else { 7018 if (DBG) loge("WifiStateMachine no channels for " + config.configKey()); 7019 return false; 7020 } 7021 } 7022 7023 void clearCurrentConfigBSSID(String dbg) { 7024 // Clear the bssid in the current config's network block 7025 WifiConfiguration config = getCurrentWifiConfiguration(); 7026 if (config == null) 7027 return; 7028 clearConfigBSSID(config, dbg); 7029 } 7030 void clearConfigBSSID(WifiConfiguration config, String dbg) { 7031 if (config == null) 7032 return; 7033 if (DBG) { 7034 loge(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 7035 + " config.bssid " + config.BSSID); 7036 } 7037 config.autoJoinBSSID = "any"; 7038 config.BSSID = "any"; 7039 if (DBG) { 7040 loge(dbg + " " + config.SSID 7041 + " nid=" + Integer.toString(config.networkId)); 7042 } 7043 mWifiConfigStore.saveWifiConfigBSSID(config); 7044 } 7045 7046 class L2ConnectedState extends State { 7047 @Override 7048 public void enter() { 7049 mRssiPollToken++; 7050 if (mEnableRssiPolling) { 7051 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 7052 } 7053 if (mNetworkAgent != null) { 7054 loge("Have NetworkAgent when entering L2Connected"); 7055 setNetworkDetailedState(DetailedState.DISCONNECTED); 7056 } 7057 setNetworkDetailedState(DetailedState.CONNECTING); 7058 7059 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 7060 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 7061 } 7062 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 7063 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 7064 mLinkProperties, 60); 7065 7066 // We must clear the config BSSID, as the wifi chipset may decide to roam 7067 // from this point on and having the BSSID specified in the network block would 7068 // cause the roam to faile and the device to disconnect 7069 clearCurrentConfigBSSID("L2ConnectedState"); 7070 } 7071 7072 @Override 7073 public void exit() { 7074 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 7075 // Bug: 15347363 7076 // For paranoia's sake, call handleNetworkDisconnect 7077 // only if BSSID is null or last networkId 7078 // is not invalid. 7079 if (DBG) { 7080 StringBuilder sb = new StringBuilder(); 7081 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 7082 if (mLastBssid !=null) { 7083 sb.append(" ").append(mLastBssid); 7084 } 7085 } 7086 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7087 handleNetworkDisconnect(); 7088 } 7089 } 7090 7091 @Override 7092 public boolean processMessage(Message message) { 7093 logStateAndMessage(message, getClass().getSimpleName()); 7094 7095 switch (message.what) { 7096 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 7097 handlePreDhcpSetup(); 7098 break; 7099 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 7100 handlePostDhcpSetup(); 7101 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 7102 if (DBG) log("WifiStateMachine DHCP successful"); 7103 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 7104 // We advance to mVerifyingLinkState because handleIPv4Success will call 7105 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 7106 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 7107 if (DBG) { 7108 int count = -1; 7109 WifiConfiguration config = getCurrentWifiConfiguration(); 7110 if (config != null) { 7111 count = config.numConnectionFailures; 7112 } 7113 log("WifiStateMachine DHCP failure count=" + count); 7114 } 7115 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 7116 // As above, we transition to mDisconnectingState via updateLinkProperties. 7117 } 7118 break; 7119 case CMD_IP_CONFIGURATION_SUCCESSFUL: 7120 handleSuccessfulIpConfiguration(); 7121 sendConnectedState(); 7122 transitionTo(mConnectedState); 7123 break; 7124 case CMD_IP_CONFIGURATION_LOST: 7125 // Get Link layer stats so as we get fresh tx packet counters 7126 getWifiLinkLayerStats(true); 7127 handleIpConfigurationLost(); 7128 transitionTo(mDisconnectingState); 7129 break; 7130 case CMD_DISCONNECT: 7131 mWifiNative.disconnect(); 7132 transitionTo(mDisconnectingState); 7133 break; 7134 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7135 if (message.arg1 == 1) { 7136 mWifiNative.disconnect(); 7137 mTemporarilyDisconnectWifi = true; 7138 transitionTo(mDisconnectingState); 7139 } 7140 break; 7141 case CMD_SET_OPERATIONAL_MODE: 7142 if (message.arg1 != CONNECT_MODE) { 7143 sendMessage(CMD_DISCONNECT); 7144 deferMessage(message); 7145 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 7146 noteWifiDisabledWhileAssociated(); 7147 } 7148 } 7149 mWifiConfigStore. 7150 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7151 break; 7152 case CMD_SET_COUNTRY_CODE: 7153 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7154 deferMessage(message); 7155 break; 7156 case CMD_START_SCAN: 7157 //if (DBG) { 7158 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7159 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 7160 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 7161 + " targetRoamBSSID=" + mTargetRoamBSSID 7162 + " RSSI=" + mWifiInfo.getRssi()); 7163 //} 7164 if (message.arg1 == SCAN_ALARM_SOURCE) { 7165 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 7166 // not be processed) and restart the scan if needed 7167 boolean shouldScan = 7168 mScreenOn && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get(); 7169 if (!checkAndRestartDelayedScan(message.arg2, 7170 shouldScan, 7171 mWifiConfigStore.associatedPartialScanPeriodMilli.get(), null, null)) { 7172 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 7173 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7174 + message.arg1 7175 + " " + message.arg2 + ", " + mDelayedScanCounter 7176 + " -> obsolete"); 7177 return HANDLED; 7178 } 7179 if (mP2pConnected.get()) { 7180 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7181 + message.arg1 7182 + " " + message.arg2 + ", " + mDelayedScanCounter 7183 + " ignore because P2P is connected"); 7184 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7185 return HANDLED; 7186 } 7187 boolean tryFullBandScan = false; 7188 boolean restrictChannelList = false; 7189 long now_ms = System.currentTimeMillis(); 7190 if (DBG) { 7191 loge("WifiStateMachine CMD_START_SCAN with age=" 7192 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7193 + " interval=" + fullBandConnectedTimeIntervalMilli 7194 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7195 } 7196 if (mWifiInfo != null) { 7197 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 7198 (now_ms - lastFullBandConnectedTimeMilli) 7199 > fullBandConnectedTimeIntervalMilli) { 7200 if (DBG) { 7201 loge("WifiStateMachine CMD_START_SCAN try full band scan age=" 7202 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7203 + " interval=" + fullBandConnectedTimeIntervalMilli 7204 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7205 } 7206 tryFullBandScan = true; 7207 } 7208 7209 if (mWifiInfo.txSuccessRate > 7210 mWifiConfigStore.maxTxPacketForFullScans 7211 || mWifiInfo.rxSuccessRate > 7212 mWifiConfigStore.maxRxPacketForFullScans) { 7213 // Too much traffic at the interface, hence no full band scan 7214 if (DBG) { 7215 loge("WifiStateMachine CMD_START_SCAN " + 7216 "prevent full band scan due to pkt rate"); 7217 } 7218 tryFullBandScan = false; 7219 } 7220 7221 if (mWifiInfo.txSuccessRate > 7222 mWifiConfigStore.maxTxPacketForPartialScans 7223 || mWifiInfo.rxSuccessRate > 7224 mWifiConfigStore.maxRxPacketForPartialScans) { 7225 // Don't scan if lots of packets are being sent 7226 restrictChannelList = true; 7227 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 7228 if (DBG) { 7229 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7230 + " ...and ignore scans" 7231 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 7232 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 7233 } 7234 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 7235 return HANDLED; 7236 } 7237 } 7238 } 7239 7240 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 7241 if (DBG) { 7242 loge("WifiStateMachine CMD_START_SCAN full=" + 7243 tryFullBandScan); 7244 } 7245 if (currentConfiguration != null) { 7246 if (fullBandConnectedTimeIntervalMilli 7247 < mWifiConfigStore.associatedPartialScanPeriodMilli.get()) { 7248 // Sanity 7249 fullBandConnectedTimeIntervalMilli 7250 = mWifiConfigStore.associatedPartialScanPeriodMilli.get(); 7251 } 7252 if (tryFullBandScan) { 7253 lastFullBandConnectedTimeMilli = now_ms; 7254 if (fullBandConnectedTimeIntervalMilli 7255 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7256 // Increase the interval 7257 fullBandConnectedTimeIntervalMilli 7258 = fullBandConnectedTimeIntervalMilli 7259 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 7260 7261 if (DBG) { 7262 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7263 + fullBandConnectedTimeIntervalMilli); 7264 } 7265 } 7266 handleScanRequest( 7267 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7268 } else { 7269 if (!startScanForConfiguration( 7270 currentConfiguration, restrictChannelList)) { 7271 if (DBG) { 7272 loge("WifiStateMachine starting scan, " + 7273 " did not find channels -> full"); 7274 } 7275 lastFullBandConnectedTimeMilli = now_ms; 7276 if (fullBandConnectedTimeIntervalMilli 7277 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7278 // Increase the interval 7279 fullBandConnectedTimeIntervalMilli 7280 = fullBandConnectedTimeIntervalMilli 7281 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 7282 7283 if (DBG) { 7284 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7285 + fullBandConnectedTimeIntervalMilli); 7286 } 7287 } 7288 handleScanRequest( 7289 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7290 } 7291 } 7292 7293 } else { 7294 loge("CMD_START_SCAN : connected mode and no configuration"); 7295 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7296 } 7297 } else { 7298 // Not scan alarm source 7299 return NOT_HANDLED; 7300 } 7301 break; 7302 /* Ignore connection to same network */ 7303 case WifiManager.CONNECT_NETWORK: 7304 int netId = message.arg1; 7305 if (mWifiInfo.getNetworkId() == netId) { 7306 break; 7307 } 7308 return NOT_HANDLED; 7309 /* Ignore */ 7310 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7311 break; 7312 case CMD_RSSI_POLL: 7313 if (message.arg1 == mRssiPollToken) { 7314 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 7315 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 7316 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 7317 if (stats != null) { 7318 // Sanity check the results provided by driver 7319 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 7320 && (stats.rssi_mgmt == 0 7321 || stats.beacon_rx == 0)) { 7322 stats = null; 7323 } 7324 } 7325 // Get Info and continue polling 7326 fetchRssiLinkSpeedAndFrequencyNative(); 7327 calculateWifiScore(stats); 7328 } 7329 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7330 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7331 7332 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 7333 } else { 7334 // Polling has completed 7335 } 7336 break; 7337 case CMD_ENABLE_RSSI_POLL: 7338 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 7339 mEnableRssiPolling = (message.arg1 == 1); 7340 } else { 7341 mEnableRssiPolling = false; 7342 } 7343 mRssiPollToken++; 7344 if (mEnableRssiPolling) { 7345 // First poll 7346 fetchRssiLinkSpeedAndFrequencyNative(); 7347 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7348 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7349 } else { 7350 cleanWifiScore(); 7351 } 7352 break; 7353 case WifiManager.RSSI_PKTCNT_FETCH: 7354 RssiPacketCountInfo info = new RssiPacketCountInfo(); 7355 fetchRssiLinkSpeedAndFrequencyNative(); 7356 info.rssi = mWifiInfo.getRssi(); 7357 fetchPktcntNative(info); 7358 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 7359 break; 7360 case CMD_DELAYED_NETWORK_DISCONNECT: 7361 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 7362 7363 // Ignore if we are not debouncing 7364 loge("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 7365 + message.arg1); 7366 return HANDLED; 7367 } else { 7368 loge("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 7369 + message.arg1); 7370 7371 linkDebouncing = false; 7372 // If we are still debouncing while this message comes, 7373 // it means we were not able to reconnect within the alloted time 7374 // = LINK_FLAPPING_DEBOUNCE_MSEC 7375 // and thus, trigger a real disconnect 7376 handleNetworkDisconnect(); 7377 transitionTo(mDisconnectedState); 7378 } 7379 break; 7380 case CMD_ASSOCIATED_BSSID: 7381 if ((String) message.obj == null) { 7382 loge("Associated command w/o BSSID"); 7383 break; 7384 } 7385 mLastBssid = (String) message.obj; 7386 if (mLastBssid != null 7387 && (mWifiInfo.getBSSID() == null 7388 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 7389 mWifiInfo.setBSSID((String) message.obj); 7390 sendNetworkStateChangeBroadcast(mLastBssid); 7391 } 7392 break; 7393 default: 7394 return NOT_HANDLED; 7395 } 7396 7397 return HANDLED; 7398 } 7399 } 7400 7401 class ObtainingIpState extends State { 7402 @Override 7403 public void enter() { 7404 if (DBG) { 7405 String key = ""; 7406 if (getCurrentWifiConfiguration() != null) { 7407 key = getCurrentWifiConfiguration().configKey(); 7408 } 7409 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 7410 + " " + key + " " 7411 + " roam=" + mAutoRoaming 7412 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 7413 + " watchdog= " + obtainingIpWatchdogCount); 7414 } 7415 7416 // Reset link Debouncing, indicating we have successfully re-connected to the AP 7417 // We might still be roaming 7418 linkDebouncing = false; 7419 7420 // Send event to CM & network change broadcast 7421 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 7422 7423 // We must clear the config BSSID, as the wifi chipset may decide to roam 7424 // from this point on and having the BSSID specified in the network block would 7425 // cause the roam to faile and the device to disconnect 7426 clearCurrentConfigBSSID("ObtainingIpAddress"); 7427 7428 try { 7429 mNwService.enableIpv6(mInterfaceName); 7430 } catch (RemoteException re) { 7431 loge("Failed to enable IPv6: " + re); 7432 } catch (IllegalStateException e) { 7433 loge("Failed to enable IPv6: " + e); 7434 } 7435 7436 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 7437 if (isRoaming()) { 7438 renewDhcp(); 7439 } else { 7440 // Remove any IP address on the interface in case we're switching from static 7441 // IP configuration to DHCP. This is safe because if we get here when not 7442 // roaming, we don't have a usable address. 7443 clearIPv4Address(mInterfaceName); 7444 startDhcp(); 7445 } 7446 obtainingIpWatchdogCount++; 7447 loge("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 7448 // Get Link layer stats so as we get fresh tx packet counters 7449 getWifiLinkLayerStats(true); 7450 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 7451 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 7452 } else { 7453 // stop any running dhcp before assigning static IP 7454 stopDhcp(); 7455 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 7456 mLastNetworkId); 7457 if (config.ipAddress == null) { 7458 loge("Static IP lacks address"); 7459 sendMessage(CMD_STATIC_IP_FAILURE); 7460 } else { 7461 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 7462 ifcg.setLinkAddress(config.ipAddress); 7463 ifcg.setInterfaceUp(); 7464 try { 7465 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 7466 if (DBG) log("Static IP configuration succeeded"); 7467 DhcpResults dhcpResults = new DhcpResults(config); 7468 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 7469 } catch (RemoteException re) { 7470 loge("Static IP configuration failed: " + re); 7471 sendMessage(CMD_STATIC_IP_FAILURE); 7472 } catch (IllegalStateException e) { 7473 loge("Static IP configuration failed: " + e); 7474 sendMessage(CMD_STATIC_IP_FAILURE); 7475 } 7476 } 7477 } 7478 } 7479 @Override 7480 public boolean processMessage(Message message) { 7481 logStateAndMessage(message, getClass().getSimpleName()); 7482 7483 switch(message.what) { 7484 case CMD_STATIC_IP_SUCCESS: 7485 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 7486 break; 7487 case CMD_STATIC_IP_FAILURE: 7488 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 7489 break; 7490 case CMD_AUTO_CONNECT: 7491 case CMD_AUTO_ROAM: 7492 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7493 break; 7494 case WifiManager.SAVE_NETWORK: 7495 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7496 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7497 deferMessage(message); 7498 break; 7499 /* Defer any power mode changes since we must keep active power mode at DHCP */ 7500 case CMD_SET_HIGH_PERF_MODE: 7501 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7502 deferMessage(message); 7503 break; 7504 /* Defer scan request since we should not switch to other channels at DHCP */ 7505 case CMD_START_SCAN: 7506 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7507 deferMessage(message); 7508 break; 7509 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 7510 if (message.arg1 == obtainingIpWatchdogCount) { 7511 loge("ObtainingIpAddress: Watchdog Triggered, count=" 7512 + obtainingIpWatchdogCount); 7513 handleIpConfigurationLost(); 7514 transitionTo(mDisconnectingState); 7515 break; 7516 } 7517 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7518 break; 7519 default: 7520 return NOT_HANDLED; 7521 } 7522 return HANDLED; 7523 } 7524 } 7525 7526 class VerifyingLinkState extends State { 7527 @Override 7528 public void enter() { 7529 log(getName() + " enter"); 7530 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 7531 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 7532 sendNetworkStateChangeBroadcast(mLastBssid); 7533 // End roaming 7534 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7535 } 7536 @Override 7537 public boolean processMessage(Message message) { 7538 logStateAndMessage(message, getClass().getSimpleName()); 7539 7540 switch (message.what) { 7541 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7542 // Stay here 7543 log(getName() + " POOR_LINK_DETECTED: no transition"); 7544 break; 7545 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 7546 log(getName() + " GOOD_LINK_DETECTED: transition to captive portal check"); 7547 7548 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 7549 sendConnectedState(); 7550 transitionTo(mConnectedState); 7551 break; 7552 default: 7553 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 7554 return NOT_HANDLED; 7555 } 7556 return HANDLED; 7557 } 7558 } 7559 7560 private void sendConnectedState() { 7561 // Send out a broadcast with the CAPTIVE_PORTAL_CHECK to preserve 7562 // existing behaviour. The captive portal check really happens after we 7563 // transition into DetailedState.CONNECTED. 7564 setNetworkDetailedState(DetailedState.CAPTIVE_PORTAL_CHECK); 7565 mWifiConfigStore.updateStatus(mLastNetworkId, 7566 DetailedState.CAPTIVE_PORTAL_CHECK); 7567 sendNetworkStateChangeBroadcast(mLastBssid); 7568 7569 if (mWifiConfigStore.getLastSelectedConfiguration() != null) { 7570 if (mNetworkAgent != null) mNetworkAgent.explicitlySelected(); 7571 } 7572 7573 setNetworkDetailedState(DetailedState.CONNECTED); 7574 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 7575 sendNetworkStateChangeBroadcast(mLastBssid); 7576 } 7577 7578 class RoamingState extends State { 7579 boolean mAssociated; 7580 @Override 7581 public void enter() { 7582 if (DBG) { 7583 log("RoamingState Enter" 7584 + " mScreenOn=" + mScreenOn ); 7585 } 7586 setScanAlarm(false); 7587 7588 // Make sure we disconnect if roaming fails 7589 roamWatchdogCount++; 7590 loge("Start Roam Watchdog " + roamWatchdogCount); 7591 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 7592 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 7593 mAssociated = false; 7594 } 7595 @Override 7596 public boolean processMessage(Message message) { 7597 logStateAndMessage(message, getClass().getSimpleName()); 7598 WifiConfiguration config; 7599 switch (message.what) { 7600 case CMD_IP_CONFIGURATION_LOST: 7601 config = getCurrentWifiConfiguration(); 7602 if (config != null) { 7603 mWifiConfigStore.noteRoamingFailure(config, 7604 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 7605 } 7606 return NOT_HANDLED; 7607 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7608 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 7609 return HANDLED; 7610 case CMD_UNWANTED_NETWORK: 7611 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 7612 return HANDLED; 7613 case CMD_SET_OPERATIONAL_MODE: 7614 if (message.arg1 != CONNECT_MODE) { 7615 deferMessage(message); 7616 } 7617 break; 7618 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7619 /** 7620 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 7621 * before NETWORK_DISCONNECTION_EVENT 7622 * And there is an associated BSSID corresponding to our target BSSID, then 7623 * we have missed the network disconnection, transition to mDisconnectedState 7624 * and handle the rest of the events there. 7625 */ 7626 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 7627 if (stateChangeResult.state == SupplicantState.DISCONNECTED 7628 || stateChangeResult.state == SupplicantState.INACTIVE 7629 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 7630 if (DBG) { 7631 log("STATE_CHANGE_EVENT in roaming state " 7632 + stateChangeResult.toString() ); 7633 } 7634 if (stateChangeResult.BSSID != null 7635 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 7636 handleNetworkDisconnect(); 7637 transitionTo(mDisconnectedState); 7638 } 7639 } 7640 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 7641 // We completed the layer2 roaming part 7642 mAssociated = true; 7643 if (stateChangeResult.BSSID != null) { 7644 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 7645 } 7646 } 7647 break; 7648 case CMD_ROAM_WATCHDOG_TIMER: 7649 if (roamWatchdogCount == message.arg1) { 7650 if (DBG) log("roaming watchdog! -> disconnect"); 7651 mRoamFailCount++; 7652 handleNetworkDisconnect(); 7653 mWifiNative.disconnect(); 7654 transitionTo(mDisconnectedState); 7655 } 7656 break; 7657 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7658 if (mAssociated) { 7659 if (DBG) log("roaming and Network connection established"); 7660 mLastNetworkId = message.arg1; 7661 mLastBssid = (String) message.obj; 7662 mWifiInfo.setBSSID(mLastBssid); 7663 mWifiInfo.setNetworkId(mLastNetworkId); 7664 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 7665 sendNetworkStateChangeBroadcast(mLastBssid); 7666 transitionTo(mObtainingIpState); 7667 } else { 7668 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7669 } 7670 break; 7671 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7672 // Throw away but only if it corresponds to the network we're roaming to 7673 String bssid = (String)message.obj; 7674 if (true) { 7675 String target = ""; 7676 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 7677 log("NETWORK_DISCONNECTION_EVENT in roaming state" 7678 + " BSSID=" + bssid 7679 + " target=" + target); 7680 } 7681 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 7682 handleNetworkDisconnect(); 7683 transitionTo(mDisconnectedState); 7684 } 7685 break; 7686 case WifiMonitor.SSID_TEMP_DISABLED: 7687 // Auth error while roaming 7688 loge("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 7689 + " id=" + Integer.toString(message.arg1) 7690 + " isRoaming=" + isRoaming() 7691 + " roam=" + Integer.toString(mAutoRoaming)); 7692 if (message.arg1 == mLastNetworkId) { 7693 config = getCurrentWifiConfiguration(); 7694 if (config != null) { 7695 mWifiConfigStore.noteRoamingFailure(config, 7696 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 7697 } 7698 handleNetworkDisconnect(); 7699 transitionTo(mDisconnectingState); 7700 } 7701 return NOT_HANDLED; 7702 case CMD_START_SCAN: 7703 deferMessage(message); 7704 break; 7705 default: 7706 return NOT_HANDLED; 7707 } 7708 return HANDLED; 7709 } 7710 7711 @Override 7712 public void exit() { 7713 loge("WifiStateMachine: Leaving Roaming state"); 7714 } 7715 } 7716 7717 class ConnectedState extends State { 7718 @Override 7719 public void enter() { 7720 String address; 7721 updateDefaultRouteMacAddress(1000); 7722 if (DBG) { 7723 log("ConnectedState Enter " 7724 + " mScreenOn=" + mScreenOn 7725 + " scanperiod=" 7726 + Integer.toString(mWifiConfigStore.associatedPartialScanPeriodMilli.get()) ); 7727 } 7728 if (mScreenOn 7729 && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 7730 // restart scan alarm 7731 startDelayedScan(mWifiConfigStore.associatedPartialScanPeriodMilli.get(), null, null); 7732 } 7733 registerConnected(); 7734 lastConnectAttempt = 0; 7735 targetWificonfiguration = null; 7736 // Paranoia 7737 linkDebouncing = false; 7738 7739 // Not roaming anymore 7740 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7741 7742 if (testNetworkDisconnect) { 7743 testNetworkDisconnectCounter++; 7744 loge("ConnectedState Enter start disconnect test " + 7745 testNetworkDisconnectCounter); 7746 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 7747 testNetworkDisconnectCounter, 0), 15000); 7748 } 7749 7750 // Reenable all networks, allow for hidden networks to be scanned 7751 mWifiConfigStore.enableAllNetworks(); 7752 7753 mLastDriverRoamAttempt = 0; 7754 } 7755 @Override 7756 public boolean processMessage(Message message) { 7757 WifiConfiguration config = null; 7758 logStateAndMessage(message, getClass().getSimpleName()); 7759 7760 switch (message.what) { 7761 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7762 if (DBG) log("Watchdog reports poor link"); 7763 transitionTo(mVerifyingLinkState); 7764 break; 7765 case CMD_UNWANTED_NETWORK: 7766 if (message.arg1 == network_status_unwanted_disconnect) { 7767 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 7768 mWifiNative.disconnect(); 7769 transitionTo(mDisconnectingState); 7770 } else if (message.arg1 == network_status_unwanted_disable_autojoin) { 7771 config = getCurrentWifiConfiguration(); 7772 if (config != null) { 7773 // Disable autojoin 7774 config.numNoInternetAccessReports += 1; 7775 } 7776 } 7777 return HANDLED; 7778 case CMD_NETWORK_STATUS: 7779 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 7780 config = getCurrentWifiConfiguration(); 7781 if (config != null) { 7782 // re-enable autojoin 7783 config.numNoInternetAccessReports = 0; 7784 config.validatedInternetAccess = true; 7785 } 7786 } 7787 return HANDLED; 7788 case CMD_TEST_NETWORK_DISCONNECT: 7789 // Force a disconnect 7790 if (message.arg1 == testNetworkDisconnectCounter) { 7791 mWifiNative.disconnect(); 7792 } 7793 break; 7794 case CMD_ASSOCIATED_BSSID: 7795 // ASSOCIATING to a new BSSID while already connected, indicates 7796 // that driver is roaming 7797 mLastDriverRoamAttempt = System.currentTimeMillis(); 7798 String toBSSID = (String)message.obj; 7799 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 7800 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 7801 } 7802 return NOT_HANDLED; 7803 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7804 long lastRoam = 0; 7805 if (mLastDriverRoamAttempt != 0) { 7806 // Calculate time since last driver roam attempt 7807 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 7808 mLastDriverRoamAttempt = 0; 7809 } 7810 config = getCurrentWifiConfiguration(); 7811 if (mScreenOn 7812 && !linkDebouncing 7813 && config != null 7814 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 7815 && !mWifiConfigStore.isLastSelectedConfiguration(config) 7816 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 7817 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 7818 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 7819 && mWifiInfo.getRssi() > 7820 WifiConfiguration.BAD_RSSI_24) 7821 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 7822 && mWifiInfo.getRssi() > 7823 WifiConfiguration.BAD_RSSI_5))) { 7824 // Start de-bouncing the L2 disconnection: 7825 // this L2 disconnection might be spurious. 7826 // Hence we allow 7 seconds for the state machine to try 7827 // to reconnect, go thru the 7828 // roaming cycle and enter Obtaining IP address 7829 // before signalling the disconnect to ConnectivityService and L3 7830 startScanForConfiguration(getCurrentWifiConfiguration(), false); 7831 linkDebouncing = true; 7832 7833 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 7834 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 7835 if (DBG) { 7836 log("NETWORK_DISCONNECTION_EVENT in connected state" 7837 + " BSSID=" + mWifiInfo.getBSSID() 7838 + " RSSI=" + mWifiInfo.getRssi() 7839 + " freq=" + mWifiInfo.getFrequency() 7840 + " reason=" + message.arg2 7841 + " -> debounce"); 7842 } 7843 return HANDLED; 7844 } else { 7845 if (DBG) { 7846 int ajst = -1; 7847 if (config != null) ajst = config.autoJoinStatus; 7848 log("NETWORK_DISCONNECTION_EVENT in connected state" 7849 + " BSSID=" + mWifiInfo.getBSSID() 7850 + " RSSI=" + mWifiInfo.getRssi() 7851 + " freq=" + mWifiInfo.getFrequency() 7852 + " was debouncing=" + linkDebouncing 7853 + " reason=" + message.arg2 7854 + " ajst=" + ajst); 7855 } 7856 } 7857 break; 7858 case CMD_AUTO_ROAM: 7859 // Clear the driver roam indication since we are attempting a framerwork roam 7860 mLastDriverRoamAttempt = 0; 7861 7862 /* Connect command coming from auto-join */ 7863 ScanResult candidate = (ScanResult)message.obj; 7864 String bssid = "any"; 7865 if (candidate != null && candidate.is5GHz()) { 7866 // Only lock BSSID for 5GHz networks 7867 bssid = candidate.BSSID; 7868 } 7869 int netId = mLastNetworkId; 7870 config = getCurrentWifiConfiguration(); 7871 7872 7873 if (config == null) { 7874 loge("AUTO_ROAM and no config, bail out..."); 7875 break; 7876 } 7877 7878 loge("CMD_AUTO_ROAM sup state " 7879 + mSupplicantStateTracker.getSupplicantStateName() 7880 + " my state " + getCurrentState().getName() 7881 + " nid=" + Integer.toString(netId) 7882 + " config " + config.configKey() 7883 + " roam=" + Integer.toString(message.arg2) 7884 + " to " + bssid 7885 + " targetRoamBSSID " + mTargetRoamBSSID); 7886 7887 /* Save the BSSID so as to lock it @ firmware */ 7888 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 7889 loge("AUTO_ROAM nothing to do"); 7890 // Same BSSID, nothing to do 7891 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7892 break; 7893 }; 7894 7895 // Make sure the network is enabled, since supplicant will not reenable it 7896 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7897 7898 boolean ret = false; 7899 if (mLastNetworkId != netId) { 7900 if (mWifiConfigStore.selectNetwork(config) && 7901 mWifiNative.reconnect()) { 7902 ret = true; 7903 } 7904 } else { 7905 ret = mWifiNative.reassociate(); 7906 } 7907 if (ret) { 7908 lastConnectAttempt = System.currentTimeMillis(); 7909 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7910 7911 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7912 mAutoRoaming = message.arg2; 7913 transitionTo(mRoamingState); 7914 7915 } else { 7916 loge("Failed to connect config: " + config + " netId: " + netId); 7917 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7918 WifiManager.ERROR); 7919 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7920 break; 7921 } 7922 break; 7923 default: 7924 return NOT_HANDLED; 7925 } 7926 return HANDLED; 7927 } 7928 7929 @Override 7930 public void exit() { 7931 loge("WifiStateMachine: Leaving Connected state"); 7932 setScanAlarm(false); 7933 mLastDriverRoamAttempt = 0; 7934 } 7935 } 7936 7937 class DisconnectingState extends State { 7938 7939 @Override 7940 public void enter() { 7941 7942 if (PDBG) { 7943 loge(" Enter DisconnectingState State scan interval " + mFrameworkScanIntervalMs 7944 + " mEnableBackgroundScan= " + mEnableBackgroundScan 7945 + " screenOn=" + mScreenOn); 7946 } 7947 7948 // Make sure we disconnect: we enter this state prior connecting to a new 7949 // network, waiting for either a DISCONECT event or a SUPPLICANT_STATE_CHANGE 7950 // event which in this case will be indicating that supplicant started to associate. 7951 // In some cases supplicant doesn't ignore the connect requests (it might not 7952 // find the target SSID in its cache), 7953 // Therefore we end up stuck that state, hence the need for the watchdog. 7954 disconnectingWatchdogCount++; 7955 loge("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 7956 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 7957 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 7958 } 7959 7960 @Override 7961 public boolean processMessage(Message message) { 7962 logStateAndMessage(message, getClass().getSimpleName()); 7963 switch (message.what) { 7964 case CMD_SET_OPERATIONAL_MODE: 7965 if (message.arg1 != CONNECT_MODE) { 7966 deferMessage(message); 7967 } 7968 break; 7969 case CMD_START_SCAN: 7970 deferMessage(message); 7971 return HANDLED; 7972 case CMD_DISCONNECTING_WATCHDOG_TIMER: 7973 if (disconnectingWatchdogCount == message.arg1) { 7974 if (DBG) log("disconnecting watchdog! -> disconnect"); 7975 handleNetworkDisconnect(); 7976 transitionTo(mDisconnectedState); 7977 } 7978 break; 7979 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7980 /** 7981 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 7982 * we have missed the network disconnection, transition to mDisconnectedState 7983 * and handle the rest of the events there 7984 */ 7985 deferMessage(message); 7986 handleNetworkDisconnect(); 7987 transitionTo(mDisconnectedState); 7988 break; 7989 default: 7990 return NOT_HANDLED; 7991 } 7992 return HANDLED; 7993 } 7994 } 7995 7996 class DisconnectedState extends State { 7997 @Override 7998 public void enter() { 7999 // We dont scan frequently if this is a temporary disconnect 8000 // due to p2p 8001 if (mTemporarilyDisconnectWifi) { 8002 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 8003 return; 8004 } 8005 8006 mFrameworkScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 8007 Settings.Global.WIFI_FRAMEWORK_SCAN_INTERVAL_MS, 8008 mDefaultFrameworkScanIntervalMs); 8009 8010 if (PDBG) { 8011 loge(" Enter disconnected State scan interval " + mFrameworkScanIntervalMs 8012 + " mEnableBackgroundScan= " + mEnableBackgroundScan 8013 + " screenOn=" + mScreenOn 8014 + " mFrameworkScanIntervalMs=" + mFrameworkScanIntervalMs); 8015 } 8016 8017 /** clear the roaming state, if we were roaming, we failed */ 8018 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8019 8020 if (mScreenOn) { 8021 /** 8022 * screen lit and => delayed timer 8023 */ 8024 startDelayedScan(mDisconnectedScanPeriodMs, null, null); 8025 } else { 8026 /** 8027 * screen dark and PNO supported => scan alarm disabled 8028 */ 8029 if (mEnableBackgroundScan) { 8030 /* If a regular scan result is pending, do not initiate background 8031 * scan until the scan results are returned. This is needed because 8032 * initiating a background scan will cancel the regular scan and 8033 * scan results will not be returned until background scanning is 8034 * cleared 8035 */ 8036 if (!mIsScanOngoing) { 8037 enableBackgroundScan(true); 8038 } 8039 } else { 8040 setScanAlarm(true); 8041 } 8042 } 8043 8044 /** 8045 * If we have no networks saved, the supplicant stops doing the periodic scan. 8046 * The scans are useful to notify the user of the presence of an open network. 8047 * Note that these are not wake up scans. 8048 */ 8049 if (!mP2pConnected.get() && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8050 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8051 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8052 } 8053 8054 mDisconnectedTimeStamp = System.currentTimeMillis(); 8055 8056 } 8057 @Override 8058 public boolean processMessage(Message message) { 8059 boolean ret = HANDLED; 8060 8061 logStateAndMessage(message, getClass().getSimpleName()); 8062 8063 switch (message.what) { 8064 case CMD_NO_NETWORKS_PERIODIC_SCAN: 8065 if (mP2pConnected.get()) break; 8066 if (message.arg1 == mPeriodicScanToken && 8067 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8068 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 8069 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8070 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8071 } 8072 break; 8073 case WifiManager.FORGET_NETWORK: 8074 case CMD_REMOVE_NETWORK: 8075 // Set up a delayed message here. After the forget/remove is handled 8076 // the handled delayed message will determine if there is a need to 8077 // scan and continue 8078 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8079 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8080 ret = NOT_HANDLED; 8081 break; 8082 case CMD_SET_OPERATIONAL_MODE: 8083 if (message.arg1 != CONNECT_MODE) { 8084 mOperationalMode = message.arg1; 8085 8086 mWifiConfigStore.disableAllNetworks(); 8087 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8088 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 8089 setWifiState(WIFI_STATE_DISABLED); 8090 } 8091 transitionTo(mScanModeState); 8092 } 8093 mWifiConfigStore. 8094 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 8095 break; 8096 /* Ignore network disconnect */ 8097 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8098 break; 8099 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8100 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8101 if (DBG) { 8102 loge("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 8103 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 8104 + " debouncing=" + linkDebouncing); 8105 } 8106 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 8107 /* ConnectModeState does the rest of the handling */ 8108 ret = NOT_HANDLED; 8109 break; 8110 case CMD_START_SCAN: 8111 if (!checkOrDeferScanAllowed(message)) { 8112 // The scan request was rescheduled 8113 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8114 return HANDLED; 8115 } 8116 /* Disable background scan temporarily during a regular scan */ 8117 if (mEnableBackgroundScan) { 8118 enableBackgroundScan(false); 8119 } 8120 if (message.arg1 == SCAN_ALARM_SOURCE) { 8121 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8122 // not be processed) and restart the scan 8123 int period = mDisconnectedScanPeriodMs; 8124 if (mP2pConnected.get()) { 8125 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 8126 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8127 mDisconnectedScanPeriodMs); 8128 } 8129 if (!checkAndRestartDelayedScan(message.arg2, 8130 true, period, null, null)) { 8131 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8132 loge("WifiStateMachine Disconnected CMD_START_SCAN source " 8133 + message.arg1 8134 + " " + message.arg2 + ", " + mDelayedScanCounter 8135 + " -> obsolete"); 8136 return HANDLED; 8137 } 8138 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8139 ret = HANDLED; 8140 } else { 8141 ret = NOT_HANDLED; 8142 } 8143 break; 8144 case WifiMonitor.SCAN_RESULTS_EVENT: 8145 /* Re-enable background scan when a pending scan result is received */ 8146 if (mEnableBackgroundScan && mIsScanOngoing) { 8147 enableBackgroundScan(true); 8148 } 8149 /* Handled in parent state */ 8150 ret = NOT_HANDLED; 8151 break; 8152 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 8153 NetworkInfo info = (NetworkInfo) message.obj; 8154 mP2pConnected.set(info.isConnected()); 8155 if (mP2pConnected.get()) { 8156 int defaultInterval = mContext.getResources().getInteger( 8157 R.integer.config_wifi_scan_interval_p2p_connected); 8158 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 8159 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8160 defaultInterval); 8161 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 8162 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8163 if (DBG) log("Turn on scanning after p2p disconnected"); 8164 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8165 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8166 } else { 8167 // If P2P is not connected and there are saved networks, then restart 8168 // scanning at the normal period. This is necessary because scanning might 8169 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 8170 // was set to zero. 8171 startDelayedScan(mDisconnectedScanPeriodMs, null, null); 8172 } 8173 break; 8174 case CMD_RECONNECT: 8175 case CMD_REASSOCIATE: 8176 if (mTemporarilyDisconnectWifi) { 8177 // Drop a third party reconnect/reassociate if STA is 8178 // temporarily disconnected for p2p 8179 break; 8180 } else { 8181 // ConnectModeState handles it 8182 ret = NOT_HANDLED; 8183 } 8184 break; 8185 case CMD_SCREEN_STATE_CHANGED: 8186 handleScreenStateChanged(message.arg1 != 0, 8187 /* startBackgroundScanIfNeeded = */ true); 8188 break; 8189 default: 8190 ret = NOT_HANDLED; 8191 } 8192 return ret; 8193 } 8194 8195 @Override 8196 public void exit() { 8197 /* No need for a background scan upon exit from a disconnected state */ 8198 if (mEnableBackgroundScan) { 8199 enableBackgroundScan(false); 8200 } 8201 setScanAlarm(false); 8202 } 8203 } 8204 8205 class WpsRunningState extends State { 8206 // Tracks the source to provide a reply 8207 private Message mSourceMessage; 8208 @Override 8209 public void enter() { 8210 mSourceMessage = Message.obtain(getCurrentMessage()); 8211 } 8212 @Override 8213 public boolean processMessage(Message message) { 8214 logStateAndMessage(message, getClass().getSimpleName()); 8215 8216 switch (message.what) { 8217 case WifiMonitor.WPS_SUCCESS_EVENT: 8218 // Ignore intermediate success, wait for full connection 8219 break; 8220 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8221 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 8222 mSourceMessage.recycle(); 8223 mSourceMessage = null; 8224 deferMessage(message); 8225 transitionTo(mDisconnectedState); 8226 break; 8227 case WifiMonitor.WPS_OVERLAP_EVENT: 8228 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8229 WifiManager.WPS_OVERLAP_ERROR); 8230 mSourceMessage.recycle(); 8231 mSourceMessage = null; 8232 transitionTo(mDisconnectedState); 8233 break; 8234 case WifiMonitor.WPS_FAIL_EVENT: 8235 // Arg1 has the reason for the failure 8236 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 8237 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 8238 mSourceMessage.recycle(); 8239 mSourceMessage = null; 8240 transitionTo(mDisconnectedState); 8241 } else { 8242 if (DBG) log("Ignore unspecified fail event during WPS connection"); 8243 } 8244 break; 8245 case WifiMonitor.WPS_TIMEOUT_EVENT: 8246 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8247 WifiManager.WPS_TIMED_OUT); 8248 mSourceMessage.recycle(); 8249 mSourceMessage = null; 8250 transitionTo(mDisconnectedState); 8251 break; 8252 case WifiManager.START_WPS: 8253 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 8254 break; 8255 case WifiManager.CANCEL_WPS: 8256 if (mWifiNative.cancelWps()) { 8257 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 8258 } else { 8259 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 8260 } 8261 transitionTo(mDisconnectedState); 8262 break; 8263 /** 8264 * Defer all commands that can cause connections to a different network 8265 * or put the state machine out of connect mode 8266 */ 8267 case CMD_STOP_DRIVER: 8268 case CMD_SET_OPERATIONAL_MODE: 8269 case WifiManager.CONNECT_NETWORK: 8270 case CMD_ENABLE_NETWORK: 8271 case CMD_RECONNECT: 8272 case CMD_REASSOCIATE: 8273 deferMessage(message); 8274 break; 8275 case CMD_AUTO_CONNECT: 8276 case CMD_AUTO_ROAM: 8277 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8278 return HANDLED; 8279 case CMD_START_SCAN: 8280 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8281 return HANDLED; 8282 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8283 if (DBG) log("Network connection lost"); 8284 handleNetworkDisconnect(); 8285 break; 8286 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 8287 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 8288 break; 8289 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 8290 // Disregard auth failure events during WPS connection. The 8291 // EAP sequence is retried several times, and there might be 8292 // failures (especially for wps pin). We will get a WPS_XXX 8293 // event at the end of the sequence anyway. 8294 if (DBG) log("Ignore auth failure during WPS connection"); 8295 break; 8296 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8297 // Throw away supplicant state changes when WPS is running. 8298 // We will start getting supplicant state changes once we get 8299 // a WPS success or failure 8300 break; 8301 default: 8302 return NOT_HANDLED; 8303 } 8304 return HANDLED; 8305 } 8306 8307 @Override 8308 public void exit() { 8309 mWifiConfigStore.enableAllNetworks(); 8310 mWifiConfigStore.loadConfiguredNetworks(); 8311 } 8312 } 8313 8314 class SoftApStartingState extends State { 8315 @Override 8316 public void enter() { 8317 final Message message = getCurrentMessage(); 8318 if (message.what == CMD_START_AP) { 8319 final WifiConfiguration config = (WifiConfiguration) message.obj; 8320 8321 if (config == null) { 8322 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 8323 } else { 8324 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 8325 startSoftApWithConfig(config); 8326 } 8327 } else { 8328 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 8329 } 8330 } 8331 @Override 8332 public boolean processMessage(Message message) { 8333 logStateAndMessage(message, getClass().getSimpleName()); 8334 8335 switch(message.what) { 8336 case CMD_START_SUPPLICANT: 8337 case CMD_STOP_SUPPLICANT: 8338 case CMD_START_AP: 8339 case CMD_STOP_AP: 8340 case CMD_START_DRIVER: 8341 case CMD_STOP_DRIVER: 8342 case CMD_SET_OPERATIONAL_MODE: 8343 case CMD_SET_COUNTRY_CODE: 8344 case CMD_SET_FREQUENCY_BAND: 8345 case CMD_START_PACKET_FILTERING: 8346 case CMD_STOP_PACKET_FILTERING: 8347 case CMD_TETHER_STATE_CHANGE: 8348 deferMessage(message); 8349 break; 8350 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 8351 WifiConfiguration config = (WifiConfiguration) message.obj; 8352 if (config != null) { 8353 startSoftApWithConfig(config); 8354 } else { 8355 loge("Softap config is null!"); 8356 sendMessage(CMD_START_AP_FAILURE); 8357 } 8358 break; 8359 case CMD_START_AP_SUCCESS: 8360 setWifiApState(WIFI_AP_STATE_ENABLED); 8361 transitionTo(mSoftApStartedState); 8362 break; 8363 case CMD_START_AP_FAILURE: 8364 setWifiApState(WIFI_AP_STATE_FAILED); 8365 transitionTo(mInitialState); 8366 break; 8367 default: 8368 return NOT_HANDLED; 8369 } 8370 return HANDLED; 8371 } 8372 } 8373 8374 class SoftApStartedState extends State { 8375 @Override 8376 public boolean processMessage(Message message) { 8377 logStateAndMessage(message, getClass().getSimpleName()); 8378 8379 switch(message.what) { 8380 case CMD_STOP_AP: 8381 if (DBG) log("Stopping Soft AP"); 8382 /* We have not tethered at this point, so we just shutdown soft Ap */ 8383 try { 8384 mNwService.stopAccessPoint(mInterfaceName); 8385 } catch(Exception e) { 8386 loge("Exception in stopAccessPoint()"); 8387 } 8388 setWifiApState(WIFI_AP_STATE_DISABLED); 8389 transitionTo(mInitialState); 8390 break; 8391 case CMD_START_AP: 8392 // Ignore a start on a running access point 8393 break; 8394 // Fail client mode operation when soft AP is enabled 8395 case CMD_START_SUPPLICANT: 8396 loge("Cannot start supplicant with a running soft AP"); 8397 setWifiState(WIFI_STATE_UNKNOWN); 8398 break; 8399 case CMD_TETHER_STATE_CHANGE: 8400 TetherStateChange stateChange = (TetherStateChange) message.obj; 8401 if (startTethering(stateChange.available)) { 8402 transitionTo(mTetheringState); 8403 } 8404 break; 8405 default: 8406 return NOT_HANDLED; 8407 } 8408 return HANDLED; 8409 } 8410 } 8411 8412 class TetheringState extends State { 8413 @Override 8414 public void enter() { 8415 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8416 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8417 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8418 } 8419 @Override 8420 public boolean processMessage(Message message) { 8421 logStateAndMessage(message, getClass().getSimpleName()); 8422 8423 switch(message.what) { 8424 case CMD_TETHER_STATE_CHANGE: 8425 TetherStateChange stateChange = (TetherStateChange) message.obj; 8426 if (isWifiTethered(stateChange.active)) { 8427 transitionTo(mTetheredState); 8428 } 8429 return HANDLED; 8430 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8431 if (message.arg1 == mTetherToken) { 8432 loge("Failed to get tether update, shutdown soft access point"); 8433 transitionTo(mSoftApStartedState); 8434 // Needs to be first thing handled 8435 sendMessageAtFrontOfQueue(CMD_STOP_AP); 8436 } 8437 break; 8438 case CMD_START_SUPPLICANT: 8439 case CMD_STOP_SUPPLICANT: 8440 case CMD_START_AP: 8441 case CMD_STOP_AP: 8442 case CMD_START_DRIVER: 8443 case CMD_STOP_DRIVER: 8444 case CMD_SET_OPERATIONAL_MODE: 8445 case CMD_SET_COUNTRY_CODE: 8446 case CMD_SET_FREQUENCY_BAND: 8447 case CMD_START_PACKET_FILTERING: 8448 case CMD_STOP_PACKET_FILTERING: 8449 deferMessage(message); 8450 break; 8451 default: 8452 return NOT_HANDLED; 8453 } 8454 return HANDLED; 8455 } 8456 } 8457 8458 class TetheredState extends State { 8459 @Override 8460 public boolean processMessage(Message message) { 8461 logStateAndMessage(message, getClass().getSimpleName()); 8462 8463 switch(message.what) { 8464 case CMD_TETHER_STATE_CHANGE: 8465 TetherStateChange stateChange = (TetherStateChange) message.obj; 8466 if (!isWifiTethered(stateChange.active)) { 8467 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 8468 setHostApRunning(null, false); 8469 setHostApRunning(null, true); 8470 } 8471 return HANDLED; 8472 case CMD_STOP_AP: 8473 if (DBG) log("Untethering before stopping AP"); 8474 setWifiApState(WIFI_AP_STATE_DISABLING); 8475 stopTethering(); 8476 transitionTo(mUntetheringState); 8477 // More work to do after untethering 8478 deferMessage(message); 8479 break; 8480 default: 8481 return NOT_HANDLED; 8482 } 8483 return HANDLED; 8484 } 8485 } 8486 8487 class UntetheringState extends State { 8488 @Override 8489 public void enter() { 8490 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8491 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8492 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8493 8494 } 8495 @Override 8496 public boolean processMessage(Message message) { 8497 logStateAndMessage(message, getClass().getSimpleName()); 8498 8499 switch(message.what) { 8500 case CMD_TETHER_STATE_CHANGE: 8501 TetherStateChange stateChange = (TetherStateChange) message.obj; 8502 8503 /* Wait till wifi is untethered */ 8504 if (isWifiTethered(stateChange.active)) break; 8505 8506 transitionTo(mSoftApStartedState); 8507 break; 8508 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8509 if (message.arg1 == mTetherToken) { 8510 loge("Failed to get tether update, force stop access point"); 8511 transitionTo(mSoftApStartedState); 8512 } 8513 break; 8514 case CMD_START_SUPPLICANT: 8515 case CMD_STOP_SUPPLICANT: 8516 case CMD_START_AP: 8517 case CMD_STOP_AP: 8518 case CMD_START_DRIVER: 8519 case CMD_STOP_DRIVER: 8520 case CMD_SET_OPERATIONAL_MODE: 8521 case CMD_SET_COUNTRY_CODE: 8522 case CMD_SET_FREQUENCY_BAND: 8523 case CMD_START_PACKET_FILTERING: 8524 case CMD_STOP_PACKET_FILTERING: 8525 deferMessage(message); 8526 break; 8527 default: 8528 return NOT_HANDLED; 8529 } 8530 return HANDLED; 8531 } 8532 } 8533 8534 //State machine initiated requests can have replyTo set to null indicating 8535 //there are no recepients, we ignore those reply actions 8536 private void replyToMessage(Message msg, int what) { 8537 if (msg.replyTo == null) return; 8538 Message dstMsg = obtainMessageWithArg2(msg); 8539 dstMsg.what = what; 8540 mReplyChannel.replyToMessage(msg, dstMsg); 8541 } 8542 8543 private void replyToMessage(Message msg, int what, int arg1) { 8544 if (msg.replyTo == null) return; 8545 Message dstMsg = obtainMessageWithArg2(msg); 8546 dstMsg.what = what; 8547 dstMsg.arg1 = arg1; 8548 mReplyChannel.replyToMessage(msg, dstMsg); 8549 } 8550 8551 private void replyToMessage(Message msg, int what, Object obj) { 8552 if (msg.replyTo == null) return; 8553 Message dstMsg = obtainMessageWithArg2(msg); 8554 dstMsg.what = what; 8555 dstMsg.obj = obj; 8556 mReplyChannel.replyToMessage(msg, dstMsg); 8557 } 8558 8559 /** 8560 * arg2 on the source message has a unique id that needs to be retained in replies 8561 * to match the request 8562 8563 * see WifiManager for details 8564 */ 8565 private Message obtainMessageWithArg2(Message srcMsg) { 8566 Message msg = Message.obtain(); 8567 msg.arg2 = srcMsg.arg2; 8568 return msg; 8569 } 8570 8571 private static int parseHex(char ch) { 8572 if ('0' <= ch && ch <= '9') { 8573 return ch - '0'; 8574 } else if ('a' <= ch && ch <= 'f') { 8575 return ch - 'a' + 10; 8576 } else if ('A' <= ch && ch <= 'F') { 8577 return ch - 'A' + 10; 8578 } else { 8579 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 8580 } 8581 } 8582 8583 private byte[] parseHex(String hex) { 8584 /* This only works for good input; don't throw bad data at it */ 8585 if (hex == null) { 8586 return new byte[0]; 8587 } 8588 8589 if (hex.length() % 2 != 0) { 8590 throw new NumberFormatException(hex + " is not a valid hex string"); 8591 } 8592 8593 byte[] result = new byte[(hex.length())/2 + 1]; 8594 result[0] = (byte) ((hex.length())/2); 8595 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 8596 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 8597 byte b = (byte) (val & 0xFF); 8598 result[j] = b; 8599 } 8600 8601 return result; 8602 } 8603 8604 private static String makeHex(byte[] bytes) { 8605 StringBuilder sb = new StringBuilder(); 8606 for (byte b : bytes) { 8607 sb.append(String.format("%02x", b)); 8608 } 8609 return sb.toString(); 8610 } 8611 8612 private static String makeHex(byte[] bytes, int from, int len) { 8613 StringBuilder sb = new StringBuilder(); 8614 for (int i = 0; i < len; i++) { 8615 sb.append(String.format("%02x", bytes[from+i])); 8616 } 8617 return sb.toString(); 8618 } 8619 8620 8621 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 8622 8623 int len = array1.length + array2.length + array3.length; 8624 8625 if (array1.length != 0) { 8626 len++; /* add another byte for size */ 8627 } 8628 8629 if (array2.length != 0) { 8630 len++; /* add another byte for size */ 8631 } 8632 8633 if (array3.length != 0) { 8634 len++; /* add another byte for size */ 8635 } 8636 8637 byte[] result = new byte[len]; 8638 8639 int index = 0; 8640 if (array1.length != 0) { 8641 result[index] = (byte) (array1.length & 0xFF); 8642 index++; 8643 for (byte b : array1) { 8644 result[index] = b; 8645 index++; 8646 } 8647 } 8648 8649 if (array2.length != 0) { 8650 result[index] = (byte) (array2.length & 0xFF); 8651 index++; 8652 for (byte b : array2) { 8653 result[index] = b; 8654 index++; 8655 } 8656 } 8657 8658 if (array3.length != 0) { 8659 result[index] = (byte) (array3.length & 0xFF); 8660 index++; 8661 for (byte b : array3) { 8662 result[index] = b; 8663 index++; 8664 } 8665 } 8666 return result; 8667 } 8668 8669 void handleGsmAuthRequest(SimAuthRequestData requestData) { 8670 if (targetWificonfiguration == null 8671 || targetWificonfiguration.networkId == requestData.networkId) { 8672 logd("id matches targetWifiConfiguration"); 8673 } else { 8674 logd("id does not match targetWifiConfiguration"); 8675 return; 8676 } 8677 8678 TelephonyManager tm = (TelephonyManager) 8679 mContext.getSystemService(Context.TELEPHONY_SERVICE); 8680 8681 if (tm != null) { 8682 StringBuilder sb = new StringBuilder(); 8683 for (String challenge : requestData.challenges) { 8684 8685 logd("RAND = " + challenge); 8686 8687 byte[] rand = null; 8688 try { 8689 rand = parseHex(challenge); 8690 } catch (NumberFormatException e) { 8691 loge("malformed challenge"); 8692 continue; 8693 } 8694 8695 String base64Challenge = android.util.Base64.encodeToString( 8696 rand, android.util.Base64.NO_WRAP); 8697 /* 8698 * appType = 1 => SIM, 2 => USIM according to 8699 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 8700 */ 8701 int appType = 2; 8702 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 8703 logv("Raw Response - " + tmResponse); 8704 8705 if (tmResponse != null && tmResponse.length() > 4) { 8706 byte[] result = android.util.Base64.decode(tmResponse, 8707 android.util.Base64.DEFAULT); 8708 logv("Hex Response -" + makeHex(result)); 8709 int sres_len = result[0]; 8710 String sres = makeHex(result, 1, sres_len); 8711 int kc_offset = 1+sres_len; 8712 int kc_len = result[kc_offset]; 8713 String kc = makeHex(result, 1+kc_offset, kc_len); 8714 sb.append(":" + kc + ":" + sres); 8715 logv("kc:" + kc + " sres:" + sres); 8716 } else { 8717 loge("bad response - " + tmResponse); 8718 } 8719 } 8720 8721 String response = sb.toString(); 8722 logv("Supplicant Response -" + response); 8723 mWifiNative.simAuthResponse(requestData.networkId, response); 8724 } else { 8725 loge("could not get telephony manager"); 8726 } 8727 } 8728 8729 void handle3GAuthRequest(SimAuthRequestData requestData) { 8730 8731 } 8732} 8733