WifiStateMachine.java revision a1edc185d46d85e04930a5e12b465de9fea64afe
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.nio.BufferUnderflowException; 123import java.util.ArrayList; 124import java.util.Calendar; 125import java.util.HashSet; 126import java.util.LinkedList; 127import java.util.List; 128import java.util.Locale; 129import java.util.Queue; 130import java.util.Random; 131import java.util.concurrent.atomic.AtomicBoolean; 132import java.util.concurrent.atomic.AtomicInteger; 133import java.util.regex.Matcher; 134import java.util.regex.Pattern; 135 136/** 137 * Track the state of Wifi connectivity. All event handling is done here, 138 * and all changes in connectivity state are initiated here. 139 * 140 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 141 * In the current implementation, we support concurrent wifi p2p and wifi operation. 142 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 143 * handles p2p operation. 144 * 145 * @hide 146 */ 147public class WifiStateMachine extends StateMachine { 148 149 private static final String NETWORKTYPE = "WIFI"; 150 private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT"; 151 private static boolean DBG = false; 152 private static boolean VDBG = false; 153 private static boolean VVDBG = false; 154 private static boolean mLogMessages = false; 155 private static final String TAG = "WifiStateMachine"; 156 157 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 158 159 private static final String GOOGLE_OUI = "DA-A1-19"; 160 161 /* temporary debug flag - best network selection development */ 162 private static boolean PDBG = false; 163 164 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 165 * the corresponding BSSID. 166 */ 167 private boolean didBlackListBSSID = false; 168 169 /** 170 * Log with error attribute 171 * 172 * @param s is string log 173 */ 174 protected void loge(String s) { 175 Log.e(getName(), s); 176 } 177 protected void log(String s) { 178 Log.d(getName(), s); 179 } 180 181 private WifiMonitor mWifiMonitor; 182 private WifiNative mWifiNative; 183 private WifiConfigStore mWifiConfigStore; 184 private WifiAutoJoinController mWifiAutoJoinController; 185 private INetworkManagementService mNwService; 186 private ConnectivityManager mCm; 187 private WifiLogger mWifiLogger; 188 189 private final boolean mP2pSupported; 190 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 191 private boolean mTemporarilyDisconnectWifi = false; 192 private final String mPrimaryDeviceType; 193 194 /* Scan results handling */ 195 private List<ScanDetail> mScanResults = new ArrayList<>(); 196 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 197 private static final int SCAN_RESULT_CACHE_SIZE = 160; 198 private final LruCache<NetworkDetail, ScanDetail> mScanResultCache; 199 // For debug, number of known scan results that were found as part of last scan result event, 200 // as well the number of scans results returned by the supplicant with that message 201 private int mNumScanResultsKnown; 202 private int mNumScanResultsReturned; 203 204 /* Batch scan results */ 205 private final List<BatchedScanResult> mBatchedScanResults = 206 new ArrayList<BatchedScanResult>(); 207 private int mBatchedScanOwnerUid = UNKNOWN_SCAN_SOURCE; 208 private int mExpectedBatchedScans = 0; 209 private long mBatchedScanMinPollTime = 0; 210 211 private boolean mScreenOn = false; 212 213 /* Chipset supports background scan */ 214 private final boolean mBackgroundScanSupported; 215 216 private String mInterfaceName; 217 /* Tethering interface could be separate from wlan interface */ 218 private String mTetherInterfaceName; 219 220 private int mLastSignalLevel = -1; 221 private String mLastBssid; 222 private int mLastNetworkId; // The network Id we successfully joined 223 private boolean linkDebouncing = false; 224 225 // Testing various network disconnect cases by sending lots of spurious 226 // disconnect to supplicant 227 private boolean testNetworkDisconnect = false; 228 229 private boolean mEnableRssiPolling = false; 230 private boolean mEnableBackgroundScan = false; 231 private int mRssiPollToken = 0; 232 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 233 * In CONNECT_MODE, the STA can scan and connect to an access point 234 * In SCAN_ONLY_MODE, the STA can only scan for access points 235 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 236 */ 237 private int mOperationalMode = CONNECT_MODE; 238 private boolean mIsScanOngoing = false; 239 private boolean mIsFullScanOngoing = false; 240 private boolean mSendScanResultsBroadcast = false; 241 242 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 243 private WorkSource mScanWorkSource = null; 244 private static final int UNKNOWN_SCAN_SOURCE = -1; 245 private static final int SCAN_ALARM_SOURCE = -2; 246 private static final int ADD_OR_UPDATE_SOURCE = -3; 247 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 248 private static final int ENABLE_WIFI = -5; 249 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 250 251 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 252 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 253 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 254 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 255 256 private static final String BATCHED_SETTING = "batched_settings"; 257 private static final String BATCHED_WORKSOURCE = "batched_worksource"; 258 259 /* Tracks if state machine has received any screen state change broadcast yet. 260 * We can miss one of these at boot. 261 */ 262 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 263 264 private boolean mBluetoothConnectionActive = false; 265 266 private PowerManager.WakeLock mSuspendWakeLock; 267 268 /** 269 * Interval in milliseconds between polling for RSSI 270 * and linkspeed information 271 */ 272 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 273 274 /** 275 * Interval in milliseconds between receiving a disconnect event 276 * while connected to a good AP, and handling the disconnect proper 277 */ 278 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 279 280 /** 281 * Delay between supplicant restarts upon failure to establish connection 282 */ 283 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 284 285 /** 286 * Number of times we attempt to restart supplicant 287 */ 288 private static final int SUPPLICANT_RESTART_TRIES = 5; 289 290 private int mSupplicantRestartCount = 0; 291 /* Tracks sequence number on stop failure message */ 292 private int mSupplicantStopFailureToken = 0; 293 294 /** 295 * Tether state change notification time out 296 */ 297 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 298 299 /* Tracks sequence number on a tether notification time out */ 300 private int mTetherToken = 0; 301 302 /** 303 * Driver start time out. 304 */ 305 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 306 307 /* Tracks sequence number on a driver time out */ 308 private int mDriverStartToken = 0; 309 310 /** 311 * The link properties of the wifi interface. 312 * Do not modify this directly; use updateLinkProperties instead. 313 */ 314 private LinkProperties mLinkProperties; 315 316 /* Tracks sequence number on a periodic scan message */ 317 private int mPeriodicScanToken = 0; 318 319 // Wakelock held during wifi start/stop and driver load/unload 320 private PowerManager.WakeLock mWakeLock; 321 322 private Context mContext; 323 324 private final Object mDhcpResultsLock = new Object(); 325 private DhcpResults mDhcpResults; 326 private WifiInfo mWifiInfo; 327 private NetworkInfo mNetworkInfo; 328 private NetworkCapabilities mNetworkCapabilities; 329 private SupplicantStateTracker mSupplicantStateTracker; 330 private BaseDhcpStateMachine mDhcpStateMachine; 331 private boolean mDhcpActive = false; 332 333 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 334 335 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 336 337 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 338 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 339 340 // Roaming failure count 341 private int mRoamFailCount = 0; 342 343 // This is the BSSID we are trying to associate to, it can be set to "any" 344 // if we havent selected a BSSID for joining. 345 // if we havent selected a BSSID for joining. 346 // The BSSID we are associated to is found in mWifiInfo 347 private String mTargetRoamBSSID = "any"; 348 349 private long mLastDriverRoamAttempt = 0; 350 351 private WifiConfiguration targetWificonfiguration = null; 352 353 // Used as debug to indicate which configuration last was saved 354 private WifiConfiguration lastSavedConfigurationAttempt = null; 355 356 // Used as debug to indicate which configuration last was removed 357 private WifiConfiguration lastForgetConfigurationAttempt = null; 358 359 //Random used by softAP channel Selection 360 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 361 boolean isRoaming() { 362 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 363 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 364 } 365 366 public void autoRoamSetBSSID(int netId, String bssid) { 367 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 368 } 369 370 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 371 boolean ret = true; 372 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 373 if (bssid == null) bssid = "any"; 374 if (config == null) return false; // Nothing to do 375 376 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 377 return false; // We didnt change anything 378 } 379 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 380 // Changing to ANY 381 if (!mWifiConfigStore.roamOnAny) { 382 ret = false; // Nothing to do 383 } 384 } 385 if (VDBG) { 386 loge("autoRoamSetBSSID " + bssid 387 + " key=" + config.configKey()); 388 } 389 config.autoJoinBSSID = bssid; 390 mTargetRoamBSSID = bssid; 391 mWifiConfigStore.saveWifiConfigBSSID(config); 392 return ret; 393 } 394 395 /** 396 * Subset of link properties coming from netlink. 397 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 398 * and domains obtained from router advertisements (RFC 6106). 399 */ 400 private NetlinkTracker mNetlinkTracker; 401 402 private AlarmManager mAlarmManager; 403 private PendingIntent mScanIntent; 404 private PendingIntent mDriverStopIntent; 405 private PendingIntent mBatchedScanIntervalIntent; 406 407 /* Tracks current frequency mode */ 408 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 409 410 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 411 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 412 413 // Channel for sending replies. 414 private AsyncChannel mReplyChannel = new AsyncChannel(); 415 416 private WifiP2pServiceImpl mWifiP2pServiceImpl; 417 418 // Used to initiate a connection with WifiP2pService 419 private AsyncChannel mWifiP2pChannel; 420 private AsyncChannel mWifiApConfigChannel; 421 422 private int mConnectionRequests = 0; 423 private WifiNetworkFactory mNetworkFactory; 424 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 425 private WifiNetworkAgent mNetworkAgent; 426 427 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 428 // We should really persist that into the networkHistory.txt file, and read it back when 429 // WifiStateMachine starts up 430 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 431 432 // Used to filter out requests we couldn't possibly satisfy. 433 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 434 435 /* The base for wifi message types */ 436 static final int BASE = Protocol.BASE_WIFI; 437 /* Start the supplicant */ 438 static final int CMD_START_SUPPLICANT = BASE + 11; 439 /* Stop the supplicant */ 440 static final int CMD_STOP_SUPPLICANT = BASE + 12; 441 /* Start the driver */ 442 static final int CMD_START_DRIVER = BASE + 13; 443 /* Stop the driver */ 444 static final int CMD_STOP_DRIVER = BASE + 14; 445 /* Indicates Static IP succeeded */ 446 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 447 /* Indicates Static IP failed */ 448 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 449 /* Indicates supplicant stop failed */ 450 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 451 /* Delayed stop to avoid shutting down driver too quick*/ 452 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 453 /* A delayed message sent to start driver when it fail to come up */ 454 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 455 456 /* Start the soft access point */ 457 static final int CMD_START_AP = BASE + 21; 458 /* Indicates soft ap start succeeded */ 459 static final int CMD_START_AP_SUCCESS = BASE + 22; 460 /* Indicates soft ap start failed */ 461 static final int CMD_START_AP_FAILURE = BASE + 23; 462 /* Stop the soft access point */ 463 static final int CMD_STOP_AP = BASE + 24; 464 /* Set the soft access point configuration */ 465 static final int CMD_SET_AP_CONFIG = BASE + 25; 466 /* Soft access point configuration set completed */ 467 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 468 /* Request the soft access point configuration */ 469 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 470 /* Response to access point configuration request */ 471 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 472 /* Invoked when getting a tether state change notification */ 473 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 474 /* A delayed message sent to indicate tether state change failed to arrive */ 475 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 476 477 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 478 479 /* Supplicant commands */ 480 /* Is supplicant alive ? */ 481 static final int CMD_PING_SUPPLICANT = BASE + 51; 482 /* Add/update a network configuration */ 483 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 484 /* Delete a network */ 485 static final int CMD_REMOVE_NETWORK = BASE + 53; 486 /* Enable a network. The device will attempt a connection to the given network. */ 487 static final int CMD_ENABLE_NETWORK = BASE + 54; 488 /* Enable all networks */ 489 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 490 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 491 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 492 /* Clear the blacklist network list */ 493 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 494 /* Save configuration */ 495 static final int CMD_SAVE_CONFIG = BASE + 58; 496 /* Get configured networks */ 497 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 498 /* Get available frequencies */ 499 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 500 /* Get adaptors */ 501 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 502 /* Get configured networks with real preSharedKey */ 503 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 504 /* Get Link Layer Stats thru HAL */ 505 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 506 /* Supplicant commands after driver start*/ 507 /* Initiate a scan */ 508 static final int CMD_START_SCAN = BASE + 71; 509 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 510 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 511 /* Disconnect from a network */ 512 static final int CMD_DISCONNECT = BASE + 73; 513 /* Reconnect to a network */ 514 static final int CMD_RECONNECT = BASE + 74; 515 /* Reassociate to a network */ 516 static final int CMD_REASSOCIATE = BASE + 75; 517 /* Get Connection Statistis */ 518 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 519 520 /* Controls suspend mode optimizations 521 * 522 * When high perf mode is enabled, suspend mode optimizations are disabled 523 * 524 * When high perf mode is disabled, suspend mode optimizations are enabled 525 * 526 * Suspend mode optimizations include: 527 * - packet filtering 528 * - turn off roaming 529 * - DTIM wake up settings 530 */ 531 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 532 /* Set the country code */ 533 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 534 /* Enables RSSI poll */ 535 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 536 /* RSSI poll */ 537 static final int CMD_RSSI_POLL = BASE + 83; 538 /* Set up packet filtering */ 539 static final int CMD_START_PACKET_FILTERING = BASE + 84; 540 /* Clear packet filter */ 541 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 542 /* Enable suspend mode optimizations in the driver */ 543 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 544 /* Delayed NETWORK_DISCONNECT */ 545 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 546 /* When there are no saved networks, we do a periodic scan to notify user of 547 * an open network */ 548 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 549 /* Test network Disconnection NETWORK_DISCONNECT */ 550 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 551 private int testNetworkDisconnectCounter = 0; 552 553 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 554 static final int MULTICAST_V6 = 1; 555 static final int MULTICAST_V4 = 0; 556 557 /* Set the frequency band */ 558 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 559 /* Enable TDLS on a specific MAC address */ 560 static final int CMD_ENABLE_TDLS = BASE + 92; 561 /* DHCP/IP configuration watchdog */ 562 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 563 564 /** 565 * Make this timer 40 seconds, which is about the normal DHCP timeout. 566 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 567 * for more than 30 seconds. 568 */ 569 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 570 571 int obtainingIpWatchdogCount = 0; 572 573 /* Commands from/to the SupplicantStateTracker */ 574 /* Reset the supplicant state tracker */ 575 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 576 577 578 /** 579 * Watchdog for protecting against b/16823537 580 * Leave time for 4-ways handshake to succeed 581 */ 582 static final int ROAM_GUARD_TIMER_MSEC = 15000; 583 584 int roamWatchdogCount = 0; 585 /* Roam state watchdog */ 586 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 587 /* Screen change intent handling */ 588 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 589 590 int disconnectingWatchdogCount = 0; 591 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 592 593 /* Disconnecting state watchdog */ 594 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 595 596 /* Disable an ephemeral network */ 597 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 598 599 /* Get matching network */ 600 static final int CMD_GET_MATCHING_CONFIG = BASE + 99; 601 602 /* P2p commands */ 603 /* We are ok with no response here since we wont do much with it anyway */ 604 public static final int CMD_ENABLE_P2P = BASE + 131; 605 /* In order to shut down supplicant cleanly, we wait till p2p has 606 * been disabled */ 607 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 608 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 609 610 public static final int CMD_BOOT_COMPLETED = BASE + 134; 611 612 /* change the batch scan settings. 613 * arg1 = responsible UID 614 * arg2 = csph (channel scans per hour) 615 * obj = bundle with the new settings and the optional worksource 616 */ 617 public static final int CMD_SET_BATCHED_SCAN = BASE + 135; 618 public static final int CMD_START_NEXT_BATCHED_SCAN = BASE + 136; 619 public static final int CMD_POLL_BATCHED_SCAN = BASE + 137; 620 621 /* We now have a valid IP configuration. */ 622 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 623 /* We no longer have a valid IP configuration. */ 624 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 625 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 626 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 627 628 /* Supplicant is trying to associate to a given BSSID */ 629 static final int CMD_TARGET_BSSID = BASE + 141; 630 631 /* Reload all networks and reconnect */ 632 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 633 634 static final int CMD_AUTO_CONNECT = BASE + 143; 635 636 static final int network_status_unwanted_disconnect = 0; 637 static final int network_status_unwanted_disable_autojoin = 1; 638 639 static final int CMD_UNWANTED_NETWORK = BASE + 144; 640 641 static final int CMD_AUTO_ROAM = BASE + 145; 642 643 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 644 645 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 646 647 static final int CMD_NETWORK_STATUS = BASE + 148; 648 649 /* Wifi state machine modes of operation */ 650 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 651 public static final int CONNECT_MODE = 1; 652 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 653 public static final int SCAN_ONLY_MODE = 2; 654 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 655 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 656 657 private static final int SUCCESS = 1; 658 private static final int FAILURE = -1; 659 660 /* Tracks if suspend optimizations need to be disabled by DHCP, 661 * screen or due to high perf mode. 662 * When any of them needs to disable it, we keep the suspend optimizations 663 * disabled 664 */ 665 private int mSuspendOptNeedsDisabled = 0; 666 667 private static final int SUSPEND_DUE_TO_DHCP = 1; 668 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1<<1; 669 private static final int SUSPEND_DUE_TO_SCREEN = 1<<2; 670 671 /* Tracks if user has enabled suspend optimizations through settings */ 672 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 673 674 /** 675 * Default framework scan interval in milliseconds. This is used in the scenario in which 676 * wifi chipset does not support background scanning to set up a 677 * periodic wake up scan so that the device can connect to a new access 678 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 679 * override this. 680 */ 681 private final int mDefaultFrameworkScanIntervalMs; 682 683 private int mDisconnectedScanPeriodMs = 10000; 684 685 /** 686 * Supplicant scan interval in milliseconds. 687 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 688 * from the default config if the setting is not set 689 */ 690 private long mSupplicantScanIntervalMs; 691 692 /** 693 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 694 */ 695 private long lastFullBandConnectedTimeMilli; 696 697 /** 698 * time interval to the next full band scan we will perform for 699 * autojoin while connected with screen lit 700 */ 701 private long fullBandConnectedTimeIntervalMilli; 702 703 /** 704 * max time interval to the next full band scan we will perform for 705 * autojoin while connected with screen lit 706 * Max time is 5 minutes 707 */ 708 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 709 710 /** 711 * Minimum time interval between enabling all networks. 712 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 713 * due to enabling every time. We add a threshold to avoid this. 714 */ 715 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 716 private long mLastEnableAllNetworksTime; 717 718 int mRunningBeaconCount = 0; 719 720 /** 721 * Starting and shutting down driver too quick causes problems leading to driver 722 * being in a bad state. Delay driver stop. 723 */ 724 private final int mDriverStopDelayMs; 725 private int mDelayedStopCounter; 726 private boolean mInDelayedStop = false; 727 728 // there is a delay between StateMachine change country code and Supplicant change country code 729 // here save the current WifiStateMachine set country code 730 private volatile String mSetCountryCode = null; 731 732 // Supplicant doesn't like setting the same country code multiple times (it may drop 733 // currently connected network), so we save the current device set country code here to avoid 734 // redundency 735 private String mDriverSetCountryCode = null; 736 737 /* Default parent state */ 738 private State mDefaultState = new DefaultState(); 739 /* Temporary initial state */ 740 private State mInitialState = new InitialState(); 741 /* Driver loaded, waiting for supplicant to start */ 742 private State mSupplicantStartingState = new SupplicantStartingState(); 743 /* Driver loaded and supplicant ready */ 744 private State mSupplicantStartedState = new SupplicantStartedState(); 745 /* Waiting for supplicant to stop and monitor to exit */ 746 private State mSupplicantStoppingState = new SupplicantStoppingState(); 747 /* Driver start issued, waiting for completed event */ 748 private State mDriverStartingState = new DriverStartingState(); 749 /* Driver started */ 750 private State mDriverStartedState = new DriverStartedState(); 751 /* Wait until p2p is disabled 752 * This is a special state which is entered right after we exit out of DriverStartedState 753 * before transitioning to another state. 754 */ 755 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 756 /* Driver stopping */ 757 private State mDriverStoppingState = new DriverStoppingState(); 758 /* Driver stopped */ 759 private State mDriverStoppedState = new DriverStoppedState(); 760 /* Scan for networks, no connection will be established */ 761 private State mScanModeState = new ScanModeState(); 762 /* Connecting to an access point */ 763 private State mConnectModeState = new ConnectModeState(); 764 /* Connected at 802.11 (L2) level */ 765 private State mL2ConnectedState = new L2ConnectedState(); 766 /* fetching IP after connection to access point (assoc+auth complete) */ 767 private State mObtainingIpState = new ObtainingIpState(); 768 /* Waiting for link quality verification to be complete */ 769 private State mVerifyingLinkState = new VerifyingLinkState(); 770 /* Connected with IP addr */ 771 private State mConnectedState = new ConnectedState(); 772 /* Roaming */ 773 private State mRoamingState = new RoamingState(); 774 /* disconnect issued, waiting for network disconnect confirmation */ 775 private State mDisconnectingState = new DisconnectingState(); 776 /* Network is not connected, supplicant assoc+auth is not complete */ 777 private State mDisconnectedState = new DisconnectedState(); 778 /* Waiting for WPS to be completed*/ 779 private State mWpsRunningState = new WpsRunningState(); 780 781 /* Soft ap is starting up */ 782 private State mSoftApStartingState = new SoftApStartingState(); 783 /* Soft ap is running */ 784 private State mSoftApStartedState = new SoftApStartedState(); 785 /* Soft ap is running and we are waiting for tether notification */ 786 private State mTetheringState = new TetheringState(); 787 /* Soft ap is running and we are tethered through connectivity service */ 788 private State mTetheredState = new TetheredState(); 789 /* Waiting for untether confirmation before stopping soft Ap */ 790 private State mUntetheringState = new UntetheringState(); 791 792 private class TetherStateChange { 793 ArrayList<String> available; 794 ArrayList<String> active; 795 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 796 available = av; 797 active = ac; 798 } 799 } 800 801 public static class SimAuthRequestData { 802 int networkId; 803 int protocol; 804 String ssid; 805 // EAP-SIM: data[] contains the 3 rand, one for each of the 3 challenges 806 // EAP-AKA/AKA': data[] contains rand & authn couple for the single challenge 807 String[] data; 808 } 809 810 /** 811 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 812 * {@link WifiManager#WIFI_STATE_DISABLING}, 813 * {@link WifiManager#WIFI_STATE_ENABLED}, 814 * {@link WifiManager#WIFI_STATE_ENABLING}, 815 * {@link WifiManager#WIFI_STATE_UNKNOWN} 816 * 817 */ 818 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 819 820 /** 821 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 822 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 823 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 824 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 825 * {@link WifiManager#WIFI_AP_STATE_FAILED} 826 * 827 */ 828 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 829 830 private static final int SCAN_REQUEST = 0; 831 private static final String ACTION_START_SCAN = 832 "com.android.server.WifiManager.action.START_SCAN"; 833 834 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 835 private static final int DRIVER_STOP_REQUEST = 0; 836 private static final String ACTION_DELAYED_DRIVER_STOP = 837 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 838 839 private static final String ACTION_REFRESH_BATCHED_SCAN = 840 "com.android.server.WifiManager.action.REFRESH_BATCHED_SCAN"; 841 /** 842 * Keep track of whether WIFI is running. 843 */ 844 private boolean mIsRunning = false; 845 846 /** 847 * Keep track of whether we last told the battery stats we had started. 848 */ 849 private boolean mReportedRunning = false; 850 851 /** 852 * Most recently set source of starting WIFI. 853 */ 854 private final WorkSource mRunningWifiUids = new WorkSource(); 855 856 /** 857 * The last reported UIDs that were responsible for starting WIFI. 858 */ 859 private final WorkSource mLastRunningWifiUids = new WorkSource(); 860 861 private final IBatteryStats mBatteryStats; 862 863 private BatchedScanSettings mBatchedScanSettings = null; 864 865 /** 866 * Track the worksource/cost of the current settings and track what's been noted 867 * to the battery stats, so we can mark the end of the previous when changing. 868 */ 869 private WorkSource mBatchedScanWorkSource = null; 870 private int mBatchedScanCsph = 0; 871 private WorkSource mNotedBatchedScanWorkSource = null; 872 private int mNotedBatchedScanCsph = 0; 873 874 private String mTcpBufferSizes = null; 875 876 // Used for debug and stats gathering 877 private static int sScanAlarmIntentCount = 0; 878 879 final static int frameworkMinScanIntervalSaneValue = 10000; 880 881 public WifiStateMachine(Context context, String wlanInterface, 882 WifiTrafficPoller trafficPoller){ 883 super("WifiStateMachine"); 884 mContext = context; 885 mSetCountryCode = Settings.Global.getString( 886 mContext.getContentResolver(), Settings.Global.WIFI_COUNTRY_CODE); 887 mInterfaceName = wlanInterface; 888 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 889 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 890 BatteryStats.SERVICE_NAME)); 891 892 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 893 mNwService = INetworkManagementService.Stub.asInterface(b); 894 895 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 896 PackageManager.FEATURE_WIFI_DIRECT); 897 898 mWifiNative = new WifiNative(mInterfaceName); 899 mWifiConfigStore = new WifiConfigStore(context, mWifiNative); 900 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 901 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 902 mWifiLogger = new WifiLogger(mContext, this); 903 mWifiMonitor = new WifiMonitor(this, mWifiNative); 904 mWifiInfo = new WifiInfo(); 905 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 906 getHandler()); 907 mLinkProperties = new LinkProperties(); 908 909 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 910 mWifiP2pServiceImpl = (WifiP2pServiceImpl)IWifiP2pManager.Stub.asInterface(s1); 911 912 mNetworkInfo.setIsAvailable(false); 913 mLastBssid = null; 914 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 915 mLastSignalLevel = -1; 916 917 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 918 public void update() { 919 sendMessage(CMD_UPDATE_LINKPROPERTIES); 920 } 921 }); 922 try { 923 mNwService.registerObserver(mNetlinkTracker); 924 } catch (RemoteException e) { 925 loge("Couldn't register netlink tracker: " + e.toString()); 926 } 927 928 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 929 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 930 mBatchedScanIntervalIntent = getPrivateBroadcast(ACTION_REFRESH_BATCHED_SCAN, 0); 931 932 // Make sure the interval is not configured less than 10 seconds 933 int period = mContext.getResources().getInteger( 934 R.integer.config_wifi_framework_scan_interval); 935 if (period < frameworkMinScanIntervalSaneValue) { 936 period = frameworkMinScanIntervalSaneValue; 937 } 938 mDefaultFrameworkScanIntervalMs = period; 939 mDriverStopDelayMs = mContext.getResources().getInteger( 940 R.integer.config_wifi_driver_stop_delay); 941 942 mBackgroundScanSupported = mContext.getResources().getBoolean( 943 R.bool.config_wifi_background_scan_support); 944 945 mPrimaryDeviceType = mContext.getResources().getString( 946 R.string.config_wifi_p2p_device_type); 947 948 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 949 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 950 951 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 952 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 953 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 954 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 955 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 956 // TODO - needs to be a bit more dynamic 957 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 958 959 mContext.registerReceiver( 960 new BroadcastReceiver() { 961 @Override 962 public void onReceive(Context context, Intent intent) { 963 ArrayList<String> available = intent.getStringArrayListExtra( 964 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 965 ArrayList<String> active = intent.getStringArrayListExtra( 966 ConnectivityManager.EXTRA_ACTIVE_TETHER); 967 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 968 } 969 },new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 970 971 mContext.registerReceiver( 972 new BroadcastReceiver() { 973 @Override 974 public void onReceive(Context context, Intent intent) { 975 sScanAlarmIntentCount++; // Used for debug only 976 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 977 if (VDBG) 978 loge("WiFiStateMachine SCAN ALARM -> " + mDelayedScanCounter.get()); 979 } 980 }, 981 new IntentFilter(ACTION_START_SCAN)); 982 983 IntentFilter filter = new IntentFilter(); 984 filter.addAction(Intent.ACTION_SCREEN_ON); 985 filter.addAction(Intent.ACTION_SCREEN_OFF); 986 filter.addAction(ACTION_REFRESH_BATCHED_SCAN); 987 mContext.registerReceiver( 988 new BroadcastReceiver() { 989 @Override 990 public void onReceive(Context context, Intent intent) { 991 String action = intent.getAction(); 992 993 if (action.equals(Intent.ACTION_SCREEN_ON)) { 994 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 995 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 996 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 997 } else if (action.equals(ACTION_REFRESH_BATCHED_SCAN)) { 998 startNextBatchedScanAsync(); 999 } 1000 } 1001 }, filter); 1002 1003 mContext.registerReceiver( 1004 new BroadcastReceiver() { 1005 @Override 1006 public void onReceive(Context context, Intent intent) { 1007 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 1008 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 1009 } 1010 }, 1011 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1012 1013 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1014 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1015 new ContentObserver(getHandler()) { 1016 @Override 1017 public void onChange(boolean selfChange) { 1018 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1019 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1020 } 1021 }); 1022 1023 mContext.registerReceiver( 1024 new BroadcastReceiver() { 1025 @Override 1026 public void onReceive(Context context, Intent intent) { 1027 sendMessage(CMD_BOOT_COMPLETED); 1028 } 1029 }, 1030 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1031 1032 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1033 1034 PowerManager powerManager = (PowerManager)mContext.getSystemService(Context.POWER_SERVICE); 1035 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1036 1037 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1038 mSuspendWakeLock.setReferenceCounted(false); 1039 1040 mTcpBufferSizes = mContext.getResources().getString( 1041 com.android.internal.R.string.config_wifi_tcp_buffers); 1042 1043 addState(mDefaultState); 1044 addState(mInitialState, mDefaultState); 1045 addState(mSupplicantStartingState, mDefaultState); 1046 addState(mSupplicantStartedState, mDefaultState); 1047 addState(mDriverStartingState, mSupplicantStartedState); 1048 addState(mDriverStartedState, mSupplicantStartedState); 1049 addState(mScanModeState, mDriverStartedState); 1050 addState(mConnectModeState, mDriverStartedState); 1051 addState(mL2ConnectedState, mConnectModeState); 1052 addState(mObtainingIpState, mL2ConnectedState); 1053 addState(mVerifyingLinkState, mL2ConnectedState); 1054 addState(mConnectedState, mL2ConnectedState); 1055 addState(mRoamingState, mL2ConnectedState); 1056 addState(mDisconnectingState, mConnectModeState); 1057 addState(mDisconnectedState, mConnectModeState); 1058 addState(mWpsRunningState, mConnectModeState); 1059 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1060 addState(mDriverStoppingState, mSupplicantStartedState); 1061 addState(mDriverStoppedState, mSupplicantStartedState); 1062 addState(mSupplicantStoppingState, mDefaultState); 1063 addState(mSoftApStartingState, mDefaultState); 1064 addState(mSoftApStartedState, mDefaultState); 1065 addState(mTetheringState, mSoftApStartedState); 1066 addState(mTetheredState, mSoftApStartedState); 1067 addState(mUntetheringState, mSoftApStartedState); 1068 1069 setInitialState(mInitialState); 1070 1071 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1072 setLogOnlyTransitions(false); 1073 if (VDBG) setDbg(true); 1074 1075 //start the state machine 1076 start(); 1077 1078 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1079 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1080 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1081 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1082 } 1083 1084 1085 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1086 Intent intent = new Intent(action, null); 1087 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1088 intent.setPackage(this.getClass().getPackage().getName()); 1089 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1090 } 1091 1092 private int mVerboseLoggingLevel = 0; 1093 1094 int getVerboseLoggingLevel() { 1095 return mVerboseLoggingLevel; 1096 } 1097 1098 void enableVerboseLogging(int verbose) { 1099 mVerboseLoggingLevel = verbose; 1100 if (verbose > 0) { 1101 DBG = true; 1102 VDBG = true; 1103 PDBG = true; 1104 mLogMessages = true; 1105 mWifiNative.setSupplicantLogLevel("DEBUG"); 1106 } else { 1107 DBG = false; 1108 VDBG = false; 1109 PDBG = false; 1110 mLogMessages = false; 1111 mWifiNative.setSupplicantLogLevel("INFO"); 1112 } 1113 mWifiAutoJoinController.enableVerboseLogging(verbose); 1114 mWifiMonitor.enableVerboseLogging(verbose); 1115 mWifiNative.enableVerboseLogging(verbose); 1116 mWifiConfigStore.enableVerboseLogging(verbose); 1117 mSupplicantStateTracker.enableVerboseLogging(verbose); 1118 } 1119 1120 private int mAggressiveHandover = 0; 1121 1122 int getAggressiveHandover() { 1123 return mAggressiveHandover; 1124 } 1125 1126 void enableAggressiveHandover(int enabled) { 1127 mAggressiveHandover = enabled; 1128 } 1129 1130 public void setAllowScansWithTraffic(int enabled) { 1131 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1132 } 1133 1134 public int getAllowScansWithTraffic() { 1135 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1136 } 1137 1138 public void setAllowScansWhileAssociated(boolean enabled) { 1139 mWifiConfigStore.enableAutoJoinScanWhenAssociated.set(enabled); 1140 } 1141 1142 public boolean getAllowScansWhileAssociated() { 1143 return mWifiConfigStore.enableAutoJoinScanWhenAssociated.get(); 1144 } 1145 1146 /* 1147 * 1148 * Framework scan control 1149 */ 1150 1151 private boolean mAlarmEnabled = false; 1152 /* This is set from the overlay config file or from a secure setting. 1153 * A value of 0 disables scanning in the framework. 1154 */ 1155 private long mFrameworkScanIntervalMs = 10000; 1156 1157 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1158 1159 private void setScanAlarm(boolean enabled) { 1160 if (PDBG) { 1161 loge("setScanAlarm " + enabled 1162 + " period " + mDefaultFrameworkScanIntervalMs 1163 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1164 } 1165 if (mBackgroundScanSupported == false) { 1166 // Scan alarm is only used for background scans if they are not 1167 // offloaded to the wifi chipset, hence enable the scan alarm 1168 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1169 enabled = true; 1170 } 1171 1172 if (enabled == mAlarmEnabled) return; 1173 if (enabled) { 1174 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1175 /* going to wake up the host processor to look for access points */ 1176 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1177 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1178 mScanIntent); 1179 mAlarmEnabled = true; 1180 } else { 1181 mAlarmManager.cancel(mScanIntent); 1182 mAlarmEnabled = false; 1183 } 1184 } 1185 1186 private void cancelDelayedScan() { 1187 mDelayedScanCounter.incrementAndGet(); 1188 loge("cancelDelayedScan -> " + mDelayedScanCounter); 1189 } 1190 1191 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1192 ScanSettings settings, WorkSource workSource) { 1193 if (counter != mDelayedScanCounter.get()) { 1194 return false; 1195 } 1196 if (restart) 1197 startDelayedScan(milli, settings, workSource); 1198 return true; 1199 } 1200 1201 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1202 if (milli <= 0) return; 1203 /** 1204 * The cases where the scan alarm should be run are : 1205 * - DisconnectedState && screenOn => used delayed timer 1206 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1207 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1208 * - ConnectedState && screenOn => used delayed timer 1209 */ 1210 1211 mDelayedScanCounter.incrementAndGet(); 1212 if (mScreenOn && 1213 (getCurrentState() == mDisconnectedState 1214 || getCurrentState() == mConnectedState)) { 1215 Bundle bundle = new Bundle(); 1216 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1217 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1218 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1219 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1220 mDelayedScanCounter.get(), bundle, milli); 1221 if (DBG) loge("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1222 } else if (mBackgroundScanSupported == false 1223 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1224 setScanAlarm(true); 1225 if (DBG) loge("startDelayedScan start scan alarm -> " 1226 + mDelayedScanCounter + " milli " + milli); 1227 } else { 1228 if (DBG) loge("startDelayedScan unhandled -> " 1229 + mDelayedScanCounter + " milli " + milli); 1230 } 1231 } 1232 1233 private boolean setRandomMacOui() { 1234 String oui = mContext.getResources().getString( 1235 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1236 String[] ouiParts = oui.split("-"); 1237 byte[] ouiBytes = new byte[3]; 1238 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1239 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1240 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1241 1242 logd("Setting OUI to " + oui); 1243 return mWifiNative.setScanningMacOui(ouiBytes); 1244 } 1245 1246 /********************************************************* 1247 * Methods exposed for public use 1248 ********************************************************/ 1249 1250 public Messenger getMessenger() { 1251 return new Messenger(getHandler()); 1252 } 1253 1254 public WifiMonitor getWifiMonitor() { 1255 return mWifiMonitor; 1256 } 1257 1258 /** 1259 * TODO: doc 1260 */ 1261 public boolean syncPingSupplicant(AsyncChannel channel) { 1262 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1263 boolean result = (resultMsg.arg1 != FAILURE); 1264 resultMsg.recycle(); 1265 return result; 1266 } 1267 1268 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1269 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1270 List<WifiChannel> list = null; 1271 if (resultMsg.obj != null) { 1272 list = new ArrayList<WifiChannel>(); 1273 String freqs = (String) resultMsg.obj; 1274 String[] lines = freqs.split("\n"); 1275 for (String line : lines) 1276 if (line.contains("MHz")) { 1277 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1278 WifiChannel c = new WifiChannel(); 1279 String[] prop = line.split(" "); 1280 if (prop.length < 5) continue; 1281 try { 1282 c.channelNum = Integer.parseInt(prop[1]); 1283 c.freqMHz = Integer.parseInt(prop[3]); 1284 } catch (NumberFormatException e) { } 1285 c.isDFS = line.contains("(DFS)"); 1286 list.add(c); 1287 } else if (line.contains("Mode[B] Channels:")) { 1288 // B channels are the same as G channels, skipped 1289 break; 1290 } 1291 } 1292 resultMsg.recycle(); 1293 return (list != null && list.size() > 0) ? list : null; 1294 } 1295 1296 /** 1297 * When settings allowing making use of untrusted networks change, trigger a scan 1298 * so as to kick of autojoin. 1299 */ 1300 public void startScanForUntrustedSettingChange() { 1301 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1302 } 1303 1304 /** 1305 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1306 * given to callingUid. 1307 * 1308 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1309 * workSource is specified. 1310 * @param workSource If not null, blame is given to workSource. 1311 * @param settings Scan settings, see {@link ScanSettings}. 1312 */ 1313 public void startScan(int callingUid, int scanCounter, 1314 ScanSettings settings, WorkSource workSource) { 1315 Bundle bundle = new Bundle(); 1316 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1317 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1318 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1319 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1320 } 1321 1322 /** 1323 * start or stop batched scanning using the given settings 1324 */ 1325 public void setBatchedScanSettings(BatchedScanSettings settings, int callingUid, int csph, 1326 WorkSource workSource) { 1327 Bundle bundle = new Bundle(); 1328 bundle.putParcelable(BATCHED_SETTING, settings); 1329 bundle.putParcelable(BATCHED_WORKSOURCE, workSource); 1330 sendMessage(CMD_SET_BATCHED_SCAN, callingUid, csph, bundle); 1331 } 1332 1333 public List<BatchedScanResult> syncGetBatchedScanResultsList() { 1334 synchronized (mBatchedScanResults) { 1335 List<BatchedScanResult> batchedScanList = 1336 new ArrayList<BatchedScanResult>(mBatchedScanResults.size()); 1337 for(BatchedScanResult result: mBatchedScanResults) { 1338 batchedScanList.add(new BatchedScanResult(result)); 1339 } 1340 return batchedScanList; 1341 } 1342 } 1343 1344 public void requestBatchedScanPoll() { 1345 sendMessage(CMD_POLL_BATCHED_SCAN); 1346 } 1347 1348 private void startBatchedScan() { 1349 if (mBatchedScanSettings == null) return; 1350 1351 if (mDhcpActive) { 1352 if (DBG) log("not starting Batched Scans due to DHCP"); 1353 return; 1354 } 1355 1356 // first grab any existing data 1357 retrieveBatchedScanData(); 1358 1359 if (PDBG) loge("try starting Batched Scans due to DHCP"); 1360 1361 1362 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1363 1364 String scansExpected = mWifiNative.setBatchedScanSettings(mBatchedScanSettings); 1365 try { 1366 mExpectedBatchedScans = Integer.parseInt(scansExpected); 1367 setNextBatchedAlarm(mExpectedBatchedScans); 1368 if (mExpectedBatchedScans > 0) noteBatchedScanStart(); 1369 } catch (NumberFormatException e) { 1370 stopBatchedScan(); 1371 loge("Exception parsing WifiNative.setBatchedScanSettings response " + e); 1372 } 1373 } 1374 1375 // called from BroadcastListener 1376 private void startNextBatchedScanAsync() { 1377 sendMessage(CMD_START_NEXT_BATCHED_SCAN); 1378 } 1379 1380 private void startNextBatchedScan() { 1381 // first grab any existing data 1382 retrieveBatchedScanData(); 1383 1384 setNextBatchedAlarm(mExpectedBatchedScans); 1385 } 1386 1387 private void handleBatchedScanPollRequest() { 1388 if (DBG) { 1389 log("handleBatchedScanPoll Request - mBatchedScanMinPollTime=" + 1390 mBatchedScanMinPollTime + " , mBatchedScanSettings=" + 1391 mBatchedScanSettings); 1392 } 1393 // if there is no appropriate PollTime that's because we either aren't 1394 // batching or we've already set a time for a poll request 1395 if (mBatchedScanMinPollTime == 0) return; 1396 if (mBatchedScanSettings == null) return; 1397 1398 long now = System.currentTimeMillis(); 1399 1400 if (now > mBatchedScanMinPollTime) { 1401 // do the poll and reset our timers 1402 startNextBatchedScan(); 1403 } else { 1404 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, mBatchedScanMinPollTime, 1405 mBatchedScanIntervalIntent); 1406 mBatchedScanMinPollTime = 0; 1407 } 1408 } 1409 1410 // return true if new/different 1411 private boolean recordBatchedScanSettings(int responsibleUid, int csph, Bundle bundle) { 1412 BatchedScanSettings settings = bundle.getParcelable(BATCHED_SETTING); 1413 WorkSource responsibleWorkSource = bundle.getParcelable(BATCHED_WORKSOURCE); 1414 1415 if (DBG) { 1416 log("set batched scan to " + settings + " for uid=" + responsibleUid + 1417 ", worksource=" + responsibleWorkSource); 1418 } 1419 if (settings != null) { 1420 if (settings.equals(mBatchedScanSettings)) return false; 1421 } else { 1422 if (mBatchedScanSettings == null) return false; 1423 } 1424 mBatchedScanSettings = settings; 1425 if (responsibleWorkSource == null) responsibleWorkSource = new WorkSource(responsibleUid); 1426 mBatchedScanWorkSource = responsibleWorkSource; 1427 mBatchedScanCsph = csph; 1428 return true; 1429 } 1430 1431 private void stopBatchedScan() { 1432 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1433 retrieveBatchedScanData(); 1434 mWifiNative.setBatchedScanSettings(null); 1435 noteBatchedScanStop(); 1436 } 1437 1438 private void setNextBatchedAlarm(int scansExpected) { 1439 1440 if (mBatchedScanSettings == null || scansExpected < 1) return; 1441 1442 mBatchedScanMinPollTime = System.currentTimeMillis() + 1443 mBatchedScanSettings.scanIntervalSec * 1000; 1444 1445 if (mBatchedScanSettings.maxScansPerBatch < scansExpected) { 1446 scansExpected = mBatchedScanSettings.maxScansPerBatch; 1447 } 1448 1449 int secToFull = mBatchedScanSettings.scanIntervalSec; 1450 secToFull *= scansExpected; 1451 1452 int debugPeriod = SystemProperties.getInt("wifi.batchedScan.pollPeriod", 0); 1453 if (debugPeriod > 0) secToFull = debugPeriod; 1454 1455 // set the alarm to do the next poll. We set it a little short as we'd rather 1456 // wake up wearly than miss a scan due to buffer overflow 1457 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 1458 + ((secToFull - (mBatchedScanSettings.scanIntervalSec / 2)) * 1000), 1459 mBatchedScanIntervalIntent); 1460 } 1461 1462 /** 1463 * Start reading new scan data 1464 * Data comes in as: 1465 * "scancount=5\n" 1466 * "nextcount=5\n" 1467 * "apcount=3\n" 1468 * "trunc\n" (optional) 1469 * "bssid=...\n" 1470 * "ssid=...\n" 1471 * "freq=...\n" (in Mhz) 1472 * "level=...\n" 1473 * "dist=...\n" (in cm) 1474 * "distsd=...\n" (standard deviation, in cm) 1475 * "====" 1476 * "bssid=...\n" 1477 * etc 1478 * "====" 1479 * "bssid=...\n" 1480 * etc 1481 * "%%%%" 1482 * "apcount=2\n" 1483 * "bssid=...\n" 1484 * etc 1485 * "%%%% 1486 * etc 1487 * "----" 1488 */ 1489 private final static boolean DEBUG_PARSE = false; 1490 private void retrieveBatchedScanData() { 1491 String rawData = mWifiNative.getBatchedScanResults(); 1492 if (DEBUG_PARSE) log("rawData = " + rawData); 1493 mBatchedScanMinPollTime = 0; 1494 if (rawData == null || rawData.equalsIgnoreCase("OK")) { 1495 loge("Unexpected BatchedScanResults :" + rawData); 1496 return; 1497 } 1498 1499 int scanCount = 0; 1500 final String END_OF_BATCHES = "----"; 1501 final String SCANCOUNT = "scancount="; 1502 final String TRUNCATED = "trunc"; 1503 final String AGE = "age="; 1504 final String DIST = "dist="; 1505 final String DISTSD = "distSd="; 1506 1507 String splitData[] = rawData.split("\n"); 1508 int n = 0; 1509 if (splitData[n].startsWith(SCANCOUNT)) { 1510 try { 1511 scanCount = Integer.parseInt(splitData[n++].substring(SCANCOUNT.length())); 1512 } catch (NumberFormatException e) { 1513 loge("scancount parseInt Exception from " + splitData[n]); 1514 } 1515 } else log("scancount not found"); 1516 if (scanCount == 0) { 1517 loge("scanCount==0 - aborting"); 1518 return; 1519 } 1520 1521 final Intent intent = new Intent(WifiManager.BATCHED_SCAN_RESULTS_AVAILABLE_ACTION); 1522 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1523 1524 synchronized (mBatchedScanResults) { 1525 mBatchedScanResults.clear(); 1526 BatchedScanResult batchedScanResult = new BatchedScanResult(); 1527 1528 String bssid = null; 1529 WifiSsid wifiSsid = null; 1530 int level = 0; 1531 int freq = 0; 1532 int dist, distSd; 1533 long tsf = 0; 1534 dist = distSd = ScanResult.UNSPECIFIED; 1535 final long now = SystemClock.elapsedRealtime(); 1536 final int bssidStrLen = BSSID_STR.length(); 1537 1538 while (true) { 1539 while (n < splitData.length) { 1540 if (DEBUG_PARSE) logd("parsing " + splitData[n]); 1541 if (splitData[n].equals(END_OF_BATCHES)) { 1542 if (n+1 != splitData.length) { 1543 loge("didn't consume " + (splitData.length-n)); 1544 } 1545 if (mBatchedScanResults.size() > 0) { 1546 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1547 } 1548 logd("retrieveBatchedScanResults X"); 1549 return; 1550 } 1551 if ((splitData[n].equals(END_STR)) || splitData[n].equals(DELIMITER_STR)) { 1552 if (bssid != null) { 1553 batchedScanResult.scanResults.add(new ScanResult( 1554 wifiSsid, bssid, null, 1555 level, freq, tsf, dist, distSd)); 1556 wifiSsid = null; 1557 bssid = null; 1558 level = 0; 1559 freq = 0; 1560 tsf = 0; 1561 dist = distSd = ScanResult.UNSPECIFIED; 1562 } 1563 if (splitData[n].equals(END_STR)) { 1564 if (batchedScanResult.scanResults.size() != 0) { 1565 mBatchedScanResults.add(batchedScanResult); 1566 batchedScanResult = new BatchedScanResult(); 1567 } else { 1568 logd("Found empty batch"); 1569 } 1570 } 1571 } else if (splitData[n].equals(TRUNCATED)) { 1572 batchedScanResult.truncated = true; 1573 } else if (splitData[n].startsWith(BSSID_STR)) { 1574 bssid = new String(splitData[n].getBytes(), bssidStrLen, 1575 splitData[n].length() - bssidStrLen); 1576 } else if (splitData[n].startsWith(FREQ_STR)) { 1577 try { 1578 freq = Integer.parseInt(splitData[n].substring(FREQ_STR.length())); 1579 } catch (NumberFormatException e) { 1580 loge("Invalid freqency: " + splitData[n]); 1581 freq = 0; 1582 } 1583 } else if (splitData[n].startsWith(AGE)) { 1584 try { 1585 tsf = now - Long.parseLong(splitData[n].substring(AGE.length())); 1586 tsf *= 1000; // convert mS -> uS 1587 } catch (NumberFormatException e) { 1588 loge("Invalid timestamp: " + splitData[n]); 1589 tsf = 0; 1590 } 1591 } else if (splitData[n].startsWith(SSID_STR)) { 1592 wifiSsid = WifiSsid.createFromAsciiEncoded( 1593 splitData[n].substring(SSID_STR.length())); 1594 } else if (splitData[n].startsWith(LEVEL_STR)) { 1595 try { 1596 level = Integer.parseInt(splitData[n].substring(LEVEL_STR.length())); 1597 if (level > 0) level -= 256; 1598 } catch (NumberFormatException e) { 1599 loge("Invalid level: " + splitData[n]); 1600 level = 0; 1601 } 1602 } else if (splitData[n].startsWith(DIST)) { 1603 try { 1604 dist = Integer.parseInt(splitData[n].substring(DIST.length())); 1605 } catch (NumberFormatException e) { 1606 loge("Invalid distance: " + splitData[n]); 1607 dist = ScanResult.UNSPECIFIED; 1608 } 1609 } else if (splitData[n].startsWith(DISTSD)) { 1610 try { 1611 distSd = Integer.parseInt(splitData[n].substring(DISTSD.length())); 1612 } catch (NumberFormatException e) { 1613 loge("Invalid distanceSd: " + splitData[n]); 1614 distSd = ScanResult.UNSPECIFIED; 1615 } 1616 } else { 1617 loge("Unable to parse batched scan result line: " + splitData[n]); 1618 } 1619 n++; 1620 } 1621 rawData = mWifiNative.getBatchedScanResults(); 1622 if (DEBUG_PARSE) log("reading more data:\n" + rawData); 1623 if (rawData == null) { 1624 loge("Unexpected null BatchedScanResults"); 1625 return; 1626 } 1627 splitData = rawData.split("\n"); 1628 if (splitData.length == 0 || splitData[0].equals("ok")) { 1629 loge("batch scan results just ended!"); 1630 if (mBatchedScanResults.size() > 0) { 1631 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1632 } 1633 return; 1634 } 1635 n = 0; 1636 } 1637 } 1638 } 1639 1640 private long mDisconnectedTimeStamp = 0; 1641 1642 public long getDisconnectedTimeMilli() { 1643 if (getCurrentState() == mDisconnectedState 1644 && mDisconnectedTimeStamp != 0) { 1645 long now_ms = System.currentTimeMillis(); 1646 return now_ms - mDisconnectedTimeStamp; 1647 } 1648 return 0; 1649 } 1650 1651 // Keeping track of scan requests 1652 private long lastStartScanTimeStamp = 0; 1653 private long lastScanDuration = 0; 1654 // Last connect attempt is used to prevent scan requests: 1655 // - for a period of 10 seconds after attempting to connect 1656 private long lastConnectAttempt = 0; 1657 private String lastScanFreqs = null; 1658 1659 // For debugging, keep track of last message status handling 1660 // TODO, find an equivalent mechanism as part of parent class 1661 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1662 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1663 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1664 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1665 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1666 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1667 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1668 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1669 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1670 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1671 1672 private int messageHandlingStatus = 0; 1673 1674 //TODO: this is used only to track connection attempts, however the link state and packet per 1675 //TODO: second logic should be folded into that 1676 private boolean checkOrDeferScanAllowed(Message msg) { 1677 long now = System.currentTimeMillis(); 1678 if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { 1679 Message dmsg = Message.obtain(msg); 1680 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttempt)); 1681 return false; 1682 } 1683 return true; 1684 } 1685 1686 private int mOnTime = 0; 1687 private int mTxTime = 0; 1688 private int mRxTime = 0; 1689 private int mOnTimeStartScan = 0; 1690 private int mTxTimeStartScan = 0; 1691 private int mRxTimeStartScan = 0; 1692 private int mOnTimeScan = 0; 1693 private int mTxTimeScan = 0; 1694 private int mRxTimeScan = 0; 1695 private int mOnTimeThisScan = 0; 1696 private int mTxTimeThisScan = 0; 1697 private int mRxTimeThisScan = 0; 1698 1699 private int mOnTimeScreenStateChange = 0; 1700 private int mOnTimeAtLastReport = 0; 1701 private long lastOntimeReportTimeStamp = 0; 1702 private long lastScreenStateChangeTimeStamp = 0; 1703 private int mOnTimeLastReport = 0; 1704 private int mTxTimeLastReport = 0; 1705 private int mRxTimeLastReport = 0; 1706 1707 private long lastLinkLayerStatsUpdate = 0; 1708 1709 String reportOnTime() { 1710 long now = System.currentTimeMillis(); 1711 StringBuilder sb = new StringBuilder(); 1712 // Report stats since last report 1713 int on = mOnTime - mOnTimeLastReport; 1714 mOnTimeLastReport = mOnTime; 1715 int tx = mTxTime - mTxTimeLastReport; 1716 mTxTimeLastReport = mTxTime; 1717 int rx = mRxTime - mRxTimeLastReport; 1718 mRxTimeLastReport = mRxTime; 1719 int period = (int)(now - lastOntimeReportTimeStamp); 1720 lastOntimeReportTimeStamp = now; 1721 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1722 // Report stats since Screen State Changed 1723 on = mOnTime - mOnTimeScreenStateChange; 1724 period = (int)(now - lastScreenStateChangeTimeStamp); 1725 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1726 return sb.toString(); 1727 } 1728 1729 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1730 WifiLinkLayerStats stats = null; 1731 if (mWifiLinkLayerStatsSupported > 0) { 1732 String name = "wlan0"; 1733 stats = mWifiNative.getWifiLinkLayerStats(name); 1734 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1735 mWifiLinkLayerStatsSupported -= 1; 1736 } else if (stats != null) { 1737 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1738 mOnTime = stats.on_time; 1739 mTxTime = stats.tx_time; 1740 mRxTime = stats.rx_time; 1741 mRunningBeaconCount = stats.beacon_rx; 1742 if (dbg) { 1743 loge(stats.toString()); 1744 } 1745 } 1746 } 1747 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1748 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1749 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1750 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1751 } else { 1752 mWifiInfo.updatePacketRates(stats); 1753 } 1754 return stats; 1755 } 1756 1757 void startRadioScanStats() { 1758 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1759 if (stats != null) { 1760 mOnTimeStartScan = stats.on_time; 1761 mTxTimeStartScan = stats.tx_time; 1762 mRxTimeStartScan = stats.rx_time; 1763 mOnTime = stats.on_time; 1764 mTxTime = stats.tx_time; 1765 mRxTime = stats.rx_time; 1766 } 1767 } 1768 1769 void closeRadioScanStats() { 1770 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1771 if (stats != null) { 1772 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1773 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1774 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1775 mOnTimeScan += mOnTimeThisScan; 1776 mTxTimeScan += mTxTimeThisScan; 1777 mRxTimeScan += mRxTimeThisScan; 1778 } 1779 } 1780 1781 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1782 private void noteScanStart(int callingUid, WorkSource workSource) { 1783 long now = System.currentTimeMillis(); 1784 lastStartScanTimeStamp = now; 1785 lastScanDuration = 0; 1786 if (DBG) { 1787 String ts = String.format("[%,d ms]", now); 1788 if (workSource != null) { 1789 loge(ts + " noteScanStart" + workSource.toString() 1790 + " uid " + Integer.toString(callingUid)); 1791 } else { 1792 loge(ts + " noteScanstart no scan source" 1793 + " uid " + Integer.toString(callingUid)); 1794 } 1795 } 1796 startRadioScanStats(); 1797 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1798 && callingUid != SCAN_ALARM_SOURCE) 1799 || workSource != null)) { 1800 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1801 try { 1802 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 1803 } catch (RemoteException e) { 1804 log(e.toString()); 1805 } 1806 } 1807 } 1808 1809 private void noteScanEnd() { 1810 long now = System.currentTimeMillis(); 1811 if (lastStartScanTimeStamp != 0) { 1812 lastScanDuration = now - lastStartScanTimeStamp; 1813 } 1814 lastStartScanTimeStamp = 0; 1815 if (DBG) { 1816 String ts = String.format("[%,d ms]", now); 1817 if (mScanWorkSource != null) 1818 loge(ts + " noteScanEnd " + mScanWorkSource.toString() 1819 + " onTime=" + mOnTimeThisScan); 1820 else 1821 loge(ts + " noteScanEnd no scan source" 1822 + " onTime=" + mOnTimeThisScan); 1823 } 1824 if (mScanWorkSource != null) { 1825 try { 1826 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1827 } catch (RemoteException e) { 1828 log(e.toString()); 1829 } finally { 1830 mScanWorkSource = null; 1831 } 1832 } 1833 } 1834 1835 private void noteBatchedScanStart() { 1836 if (PDBG) loge("noteBatchedScanstart()"); 1837 // note the end of a previous scan set 1838 if (mNotedBatchedScanWorkSource != null && 1839 (mNotedBatchedScanWorkSource.equals(mBatchedScanWorkSource) == false || 1840 mNotedBatchedScanCsph != mBatchedScanCsph)) { 1841 try { 1842 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1843 } catch (RemoteException e) { 1844 log(e.toString()); 1845 } finally { 1846 mNotedBatchedScanWorkSource = null; 1847 mNotedBatchedScanCsph = 0; 1848 } 1849 } 1850 // note the start of the new 1851 try { 1852 mBatteryStats.noteWifiBatchedScanStartedFromSource(mBatchedScanWorkSource, 1853 mBatchedScanCsph); 1854 mNotedBatchedScanWorkSource = mBatchedScanWorkSource; 1855 mNotedBatchedScanCsph = mBatchedScanCsph; 1856 } catch (RemoteException e) { 1857 log(e.toString()); 1858 } 1859 } 1860 1861 private void noteBatchedScanStop() { 1862 if (PDBG) loge("noteBatchedScanstop()"); 1863 1864 if (mNotedBatchedScanWorkSource != null) { 1865 try { 1866 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1867 } catch (RemoteException e) { 1868 log(e.toString()); 1869 } finally { 1870 mNotedBatchedScanWorkSource = null; 1871 mNotedBatchedScanCsph = 0; 1872 } 1873 } 1874 } 1875 1876 private void handleScanRequest(int type, Message message) { 1877 ScanSettings settings = null; 1878 WorkSource workSource = null; 1879 1880 // unbundle parameters 1881 Bundle bundle = (Bundle) message.obj; 1882 1883 if (bundle != null) { 1884 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1885 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1886 } 1887 1888 // parse scan settings 1889 String freqs = null; 1890 if (settings != null && settings.channelSet != null) { 1891 StringBuilder sb = new StringBuilder(); 1892 boolean first = true; 1893 for (WifiChannel channel : settings.channelSet) { 1894 if (!first) sb.append(','); else first = false; 1895 sb.append(channel.freqMHz); 1896 } 1897 freqs = sb.toString(); 1898 } 1899 1900 // call wifi native to start the scan 1901 if (startScanNative(type, freqs)) { 1902 // only count battery consumption if scan request is accepted 1903 noteScanStart(message.arg1, workSource); 1904 // a full scan covers everything, clearing scan request buffer 1905 if (freqs == null) 1906 mBufferedScanMsg.clear(); 1907 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1908 if (workSource != null) { 1909 // External worksource was passed along the scan request, 1910 // hence always send a broadcast 1911 mSendScanResultsBroadcast = true; 1912 } 1913 return; 1914 } 1915 1916 // if reach here, scan request is rejected 1917 1918 if (!mIsScanOngoing) { 1919 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1920 1921 // discard this request and pop up the next one 1922 if (mBufferedScanMsg.size() > 0) { 1923 sendMessage(mBufferedScanMsg.remove()); 1924 } 1925 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 1926 } else if (!mIsFullScanOngoing) { 1927 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 1928 // buffer the scan request to make sure specified channels will be scanned eventually 1929 if (freqs == null) 1930 mBufferedScanMsg.clear(); 1931 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 1932 Message msg = obtainMessage(CMD_START_SCAN, 1933 message.arg1, message.arg2, bundle); 1934 mBufferedScanMsg.add(msg); 1935 } else { 1936 // if too many requests in buffer, combine them into a single full scan 1937 bundle = new Bundle(); 1938 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 1939 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1940 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 1941 mBufferedScanMsg.clear(); 1942 mBufferedScanMsg.add(msg); 1943 } 1944 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 1945 } else { 1946 // mIsScanOngoing and mIsFullScanOngoing 1947 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 1948 } 1949 } 1950 1951 1952 /** return true iff scan request is accepted */ 1953 private boolean startScanNative(int type, String freqs) { 1954 if (mWifiNative.scan(type, freqs)) { 1955 mIsScanOngoing = true; 1956 mIsFullScanOngoing = (freqs == null); 1957 lastScanFreqs = freqs; 1958 return true; 1959 } 1960 return false; 1961 } 1962 1963 /** 1964 * TODO: doc 1965 */ 1966 public void setSupplicantRunning(boolean enable) { 1967 if (enable) { 1968 sendMessage(CMD_START_SUPPLICANT); 1969 } else { 1970 sendMessage(CMD_STOP_SUPPLICANT); 1971 } 1972 } 1973 1974 /** 1975 * TODO: doc 1976 */ 1977 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 1978 if (enable) { 1979 sendMessage(CMD_START_AP, wifiConfig); 1980 } else { 1981 sendMessage(CMD_STOP_AP); 1982 } 1983 } 1984 1985 public void setWifiApConfiguration(WifiConfiguration config) { 1986 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 1987 } 1988 1989 public WifiConfiguration syncGetWifiApConfiguration() { 1990 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 1991 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 1992 resultMsg.recycle(); 1993 return ret; 1994 } 1995 1996 /** 1997 * TODO: doc 1998 */ 1999 public int syncGetWifiState() { 2000 return mWifiState.get(); 2001 } 2002 2003 /** 2004 * TODO: doc 2005 */ 2006 public String syncGetWifiStateByName() { 2007 switch (mWifiState.get()) { 2008 case WIFI_STATE_DISABLING: 2009 return "disabling"; 2010 case WIFI_STATE_DISABLED: 2011 return "disabled"; 2012 case WIFI_STATE_ENABLING: 2013 return "enabling"; 2014 case WIFI_STATE_ENABLED: 2015 return "enabled"; 2016 case WIFI_STATE_UNKNOWN: 2017 return "unknown state"; 2018 default: 2019 return "[invalid state]"; 2020 } 2021 } 2022 2023 /** 2024 * TODO: doc 2025 */ 2026 public int syncGetWifiApState() { 2027 return mWifiApState.get(); 2028 } 2029 2030 /** 2031 * TODO: doc 2032 */ 2033 public String syncGetWifiApStateByName() { 2034 switch (mWifiApState.get()) { 2035 case WIFI_AP_STATE_DISABLING: 2036 return "disabling"; 2037 case WIFI_AP_STATE_DISABLED: 2038 return "disabled"; 2039 case WIFI_AP_STATE_ENABLING: 2040 return "enabling"; 2041 case WIFI_AP_STATE_ENABLED: 2042 return "enabled"; 2043 case WIFI_AP_STATE_FAILED: 2044 return "failed"; 2045 default: 2046 return "[invalid state]"; 2047 } 2048 } 2049 2050 /** 2051 * Get status information for the current connection, if any. 2052 * @return a {@link WifiInfo} object containing information about the current connection 2053 * 2054 */ 2055 public WifiInfo syncRequestConnectionInfo() { 2056 return mWifiInfo; 2057 } 2058 2059 public DhcpResults syncGetDhcpResults() { 2060 synchronized (mDhcpResultsLock) { 2061 return new DhcpResults(mDhcpResults); 2062 } 2063 } 2064 2065 /** 2066 * TODO: doc 2067 */ 2068 public void setDriverStart(boolean enable) { 2069 if (enable) { 2070 sendMessage(CMD_START_DRIVER); 2071 } else { 2072 sendMessage(CMD_STOP_DRIVER); 2073 } 2074 } 2075 2076 /** 2077 * TODO: doc 2078 */ 2079 public void setOperationalMode(int mode) { 2080 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2081 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2082 } 2083 2084 /** 2085 * TODO: doc 2086 */ 2087 public List<ScanResult> syncGetScanResultsList() { 2088 synchronized (mScanResultCache) { 2089 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2090 for(ScanDetail result: mScanResults) { 2091 scanList.add(new ScanResult(result.getScanResult())); 2092 } 2093 return scanList; 2094 } 2095 } 2096 2097 public void disableEphemeralNetwork(String SSID) { 2098 if (SSID != null) { 2099 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2100 } 2101 } 2102 2103 /** 2104 * Get unsynchronized pointer to scan result list 2105 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2106 */ 2107 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2108 return mScanResults; 2109 } 2110 2111 /** 2112 * Disconnect from Access Point 2113 */ 2114 public void disconnectCommand() { 2115 sendMessage(CMD_DISCONNECT); 2116 } 2117 2118 public void disconnectCommand(int uid, int reason) { 2119 sendMessage(CMD_DISCONNECT, uid, reason); 2120 } 2121 2122 /** 2123 * Initiate a reconnection to AP 2124 */ 2125 public void reconnectCommand() { 2126 sendMessage(CMD_RECONNECT); 2127 } 2128 2129 /** 2130 * Initiate a re-association to AP 2131 */ 2132 public void reassociateCommand() { 2133 sendMessage(CMD_REASSOCIATE); 2134 } 2135 2136 /** 2137 * Reload networks and then reconnect; helps load correct data for TLS networks 2138 */ 2139 2140 public void reloadTlsNetworksAndReconnect() { 2141 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2142 } 2143 2144 /** 2145 * Add a network synchronously 2146 * 2147 * @return network id of the new network 2148 */ 2149 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2150 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2151 int result = resultMsg.arg1; 2152 resultMsg.recycle(); 2153 return result; 2154 } 2155 2156 /** 2157 * Get configured networks synchronously 2158 * @param channel 2159 * @return 2160 */ 2161 2162 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2163 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2164 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2165 resultMsg.recycle(); 2166 return result; 2167 } 2168 2169 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2170 Message resultMsg = channel.sendMessageSynchronously( 2171 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2172 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2173 resultMsg.recycle(); 2174 return result; 2175 } 2176 2177 public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) { 2178 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult); 2179 return (WifiConfiguration) resultMsg.obj; 2180 } 2181 2182 /** 2183 * Get connection statistics synchronously 2184 * @param channel 2185 * @return 2186 */ 2187 2188 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2189 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2190 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2191 resultMsg.recycle(); 2192 return result; 2193 } 2194 2195 /** 2196 * Get adaptors synchronously 2197 */ 2198 2199 public int syncGetSupportedFeatures(AsyncChannel channel) { 2200 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2201 int supportedFeatureSet = resultMsg.arg1; 2202 resultMsg.recycle(); 2203 return supportedFeatureSet; 2204 } 2205 2206 /** 2207 * Get link layers stats for adapter synchronously 2208 */ 2209 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2210 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2211 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2212 resultMsg.recycle(); 2213 return result; 2214 } 2215 2216 /** 2217 * Delete a network 2218 * 2219 * @param networkId id of the network to be removed 2220 */ 2221 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2222 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2223 boolean result = (resultMsg.arg1 != FAILURE); 2224 resultMsg.recycle(); 2225 return result; 2226 } 2227 2228 /** 2229 * Enable a network 2230 * 2231 * @param netId network id of the network 2232 * @param disableOthers true, if all other networks have to be disabled 2233 * @return {@code true} if the operation succeeds, {@code false} otherwise 2234 */ 2235 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2236 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2237 disableOthers ? 1 : 0); 2238 boolean result = (resultMsg.arg1 != FAILURE); 2239 resultMsg.recycle(); 2240 return result; 2241 } 2242 2243 /** 2244 * Disable a network 2245 * 2246 * @param netId network id of the network 2247 * @return {@code true} if the operation succeeds, {@code false} otherwise 2248 */ 2249 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2250 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2251 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2252 resultMsg.recycle(); 2253 return result; 2254 } 2255 2256 /** 2257 * Retrieves a WPS-NFC configuration token for the specified network 2258 * @return a hex string representation of the WPS-NFC configuration token 2259 */ 2260 public String syncGetWpsNfcConfigurationToken(int netId) { 2261 return mWifiNative.getNfcWpsConfigurationToken(netId); 2262 } 2263 2264 void enableBackgroundScan(boolean enable) { 2265 if (enable) { 2266 mWifiConfigStore.enableAllNetworks(); 2267 } 2268 mWifiNative.enableBackgroundScan(enable); 2269 } 2270 2271 /** 2272 * Blacklist a BSSID. This will avoid the AP if there are 2273 * alternate APs to connect 2274 * 2275 * @param bssid BSSID of the network 2276 */ 2277 public void addToBlacklist(String bssid) { 2278 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2279 } 2280 2281 /** 2282 * Clear the blacklist list 2283 * 2284 */ 2285 public void clearBlacklist() { 2286 sendMessage(CMD_CLEAR_BLACKLIST); 2287 } 2288 2289 public void enableRssiPolling(boolean enabled) { 2290 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2291 } 2292 2293 public void enableAllNetworks() { 2294 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2295 } 2296 2297 /** 2298 * Start filtering Multicast v4 packets 2299 */ 2300 public void startFilteringMulticastV4Packets() { 2301 mFilteringMulticastV4Packets.set(true); 2302 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2303 } 2304 2305 /** 2306 * Stop filtering Multicast v4 packets 2307 */ 2308 public void stopFilteringMulticastV4Packets() { 2309 mFilteringMulticastV4Packets.set(false); 2310 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2311 } 2312 2313 /** 2314 * Start filtering Multicast v4 packets 2315 */ 2316 public void startFilteringMulticastV6Packets() { 2317 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2318 } 2319 2320 /** 2321 * Stop filtering Multicast v4 packets 2322 */ 2323 public void stopFilteringMulticastV6Packets() { 2324 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2325 } 2326 2327 /** 2328 * Set high performance mode of operation. 2329 * Enabling would set active power mode and disable suspend optimizations; 2330 * disabling would set auto power mode and enable suspend optimizations 2331 * @param enable true if enable, false otherwise 2332 */ 2333 public void setHighPerfModeEnabled(boolean enable) { 2334 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2335 } 2336 2337 /** 2338 * Set the country code 2339 * @param countryCode following ISO 3166 format 2340 * @param persist {@code true} if the setting should be remembered. 2341 */ 2342 public synchronized void setCountryCode(String countryCode, boolean persist) { 2343 // If it's a good country code, apply after the current 2344 // wifi connection is terminated; ignore resetting of code 2345 // for now (it is unclear what the chipset should do when 2346 // country code is reset) 2347 2348 if (TextUtils.isEmpty(countryCode)) { 2349 log("Ignoring resetting of country code"); 2350 } else { 2351 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2352 // else only when the new country code is different from the current one to set 2353 int countryCodeSequence = mCountryCodeSequence.get(); 2354 if(countryCodeSequence == 0 || countryCode.equals(mSetCountryCode) == false) { 2355 2356 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2357 mSetCountryCode = countryCode; 2358 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2359 countryCode); 2360 } 2361 2362 if (persist) { 2363 Settings.Global.putString(mContext.getContentResolver(), 2364 Settings.Global.WIFI_COUNTRY_CODE, 2365 countryCode); 2366 } 2367 } 2368 } 2369 2370 /** 2371 * Get the country code 2372 * @param countryCode following ISO 3166 format 2373 */ 2374 public String getCountryCode() { 2375 return mSetCountryCode; 2376 } 2377 2378 2379 /** 2380 * Set the operational frequency band 2381 * @param band 2382 * @param persist {@code true} if the setting should be remembered. 2383 */ 2384 public void setFrequencyBand(int band, boolean persist) { 2385 if (persist) { 2386 Settings.Global.putInt(mContext.getContentResolver(), 2387 Settings.Global.WIFI_FREQUENCY_BAND, 2388 band); 2389 } 2390 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2391 } 2392 2393 /** 2394 * Enable TDLS for a specific MAC address 2395 */ 2396 public void enableTdls(String remoteMacAddress, boolean enable) { 2397 int enabler = enable ? 1 : 0; 2398 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2399 } 2400 2401 /** 2402 * Returns the operational frequency band 2403 */ 2404 public int getFrequencyBand() { 2405 return mFrequencyBand.get(); 2406 } 2407 2408 /** 2409 * Returns the wifi configuration file 2410 */ 2411 public String getConfigFile() { 2412 return mWifiConfigStore.getConfigFile(); 2413 } 2414 2415 /** 2416 * Send a message indicating bluetooth adapter connection state changed 2417 */ 2418 public void sendBluetoothAdapterStateChange(int state) { 2419 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2420 } 2421 2422 /** 2423 * Save configuration on supplicant 2424 * 2425 * @return {@code true} if the operation succeeds, {@code false} otherwise 2426 * 2427 * TODO: deprecate this 2428 */ 2429 public boolean syncSaveConfig(AsyncChannel channel) { 2430 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2431 boolean result = (resultMsg.arg1 != FAILURE); 2432 resultMsg.recycle(); 2433 return result; 2434 } 2435 2436 public void updateBatteryWorkSource(WorkSource newSource) { 2437 synchronized (mRunningWifiUids) { 2438 try { 2439 if (newSource != null) { 2440 mRunningWifiUids.set(newSource); 2441 } 2442 if (mIsRunning) { 2443 if (mReportedRunning) { 2444 // If the work source has changed since last time, need 2445 // to remove old work from battery stats. 2446 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2447 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2448 mRunningWifiUids); 2449 mLastRunningWifiUids.set(mRunningWifiUids); 2450 } 2451 } else { 2452 // Now being started, report it. 2453 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2454 mLastRunningWifiUids.set(mRunningWifiUids); 2455 mReportedRunning = true; 2456 } 2457 } else { 2458 if (mReportedRunning) { 2459 // Last reported we were running, time to stop. 2460 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2461 mLastRunningWifiUids.clear(); 2462 mReportedRunning = false; 2463 } 2464 } 2465 mWakeLock.setWorkSource(newSource); 2466 } catch (RemoteException ignore) { 2467 } 2468 } 2469 } 2470 2471 @Override 2472 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2473 super.dump(fd, pw, args); 2474 mSupplicantStateTracker.dump(fd, pw, args); 2475 pw.println("mLinkProperties " + mLinkProperties); 2476 pw.println("mWifiInfo " + mWifiInfo); 2477 pw.println("mDhcpResults " + mDhcpResults); 2478 pw.println("mNetworkInfo " + mNetworkInfo); 2479 pw.println("mLastSignalLevel " + mLastSignalLevel); 2480 pw.println("mLastBssid " + mLastBssid); 2481 pw.println("mLastNetworkId " + mLastNetworkId); 2482 pw.println("mOperationalMode " + mOperationalMode); 2483 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2484 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2485 pw.println("Supplicant status " + mWifiNative.status(true)); 2486 pw.println("mEnableBackgroundScan " + mEnableBackgroundScan); 2487 pw.println("mSetCountryCode " + mSetCountryCode); 2488 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2489 mNetworkFactory.dump(fd, pw, args); 2490 mUntrustedNetworkFactory.dump(fd, pw, args); 2491 pw.println(); 2492 mWifiConfigStore.dump(fd, pw, args); 2493 } 2494 2495 /********************************************************* 2496 * Internal private functions 2497 ********************************************************/ 2498 2499 private void logStateAndMessage(Message message, String state) { 2500 messageHandlingStatus = 0; 2501 if (mLogMessages) { 2502 //long now = SystemClock.elapsedRealtimeNanos(); 2503 //String ts = String.format("[%,d us]", now/1000); 2504 2505 loge( " " + state + " " + getLogRecString(message)); 2506 } 2507 } 2508 2509 /** 2510 * helper, prints the milli time since boot wi and w/o suspended time 2511 */ 2512 String printTime() { 2513 StringBuilder sb = new StringBuilder(); 2514 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2515 sb.append("/").append(SystemClock.elapsedRealtime()); 2516 return sb.toString(); 2517 } 2518 2519 /** 2520 * Return the additional string to be logged by LogRec, default 2521 * 2522 * @param msg that was processed 2523 * @return information to be logged as a String 2524 */ 2525 protected String getLogRecString(Message msg) { 2526 WifiConfiguration config; 2527 Long now; 2528 String report; 2529 String key; 2530 StringBuilder sb = new StringBuilder(); 2531 if (mScreenOn) { 2532 sb.append("!"); 2533 } 2534 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2535 sb.append("(").append(messageHandlingStatus).append(")"); 2536 } 2537 sb.append(smToString(msg)); 2538 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2539 sb.append(" uid=" + msg.sendingUid); 2540 } 2541 switch (msg.what) { 2542 case CMD_START_SCAN: 2543 now = System.currentTimeMillis(); 2544 sb.append(" "); 2545 sb.append(Integer.toString(msg.arg1)); 2546 sb.append(" "); 2547 sb.append(Integer.toString(msg.arg2)); 2548 sb.append(" ic="); 2549 sb.append(Integer.toString(sScanAlarmIntentCount)); 2550 if (msg.obj != null) { 2551 Bundle bundle = (Bundle)msg.obj; 2552 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2553 if (request != 0) { 2554 sb.append(" proc(ms):").append(now - request); 2555 } 2556 } 2557 if (mIsScanOngoing) sb.append(" onGoing"); 2558 if (mIsFullScanOngoing) sb.append(" full"); 2559 if (lastStartScanTimeStamp != 0) { 2560 sb.append(" started:").append(lastStartScanTimeStamp); 2561 sb.append(",").append(now - lastStartScanTimeStamp); 2562 } 2563 if (lastScanDuration != 0) { 2564 sb.append(" dur:").append(lastScanDuration); 2565 } 2566 sb.append(" cnt=").append(mDelayedScanCounter); 2567 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2568 sb.append(" f=").append(mWifiInfo.getFrequency()); 2569 sb.append(" sc=").append(mWifiInfo.score); 2570 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2571 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2572 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2573 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2574 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2575 if (lastScanFreqs != null) { 2576 sb.append(" list=").append(lastScanFreqs); 2577 } else { 2578 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2579 } 2580 report = reportOnTime(); 2581 if (report != null) { 2582 sb.append(" ").append(report); 2583 } 2584 break; 2585 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2586 sb.append(" "); 2587 sb.append(Integer.toString(msg.arg1)); 2588 sb.append(" "); 2589 sb.append(Integer.toString(msg.arg2)); 2590 sb.append(printTime()); 2591 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2592 if (stateChangeResult != null) { 2593 sb.append(stateChangeResult.toString()); 2594 } 2595 break; 2596 case WifiManager.SAVE_NETWORK: 2597 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2598 sb.append(" "); 2599 sb.append(Integer.toString(msg.arg1)); 2600 sb.append(" "); 2601 sb.append(Integer.toString(msg.arg2)); 2602 if (lastSavedConfigurationAttempt != null) { 2603 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2604 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2605 if (lastSavedConfigurationAttempt.hiddenSSID) { 2606 sb.append(" hidden"); 2607 } 2608 if (lastSavedConfigurationAttempt.preSharedKey != null 2609 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2610 sb.append(" hasPSK"); 2611 } 2612 if (lastSavedConfigurationAttempt.ephemeral) { 2613 sb.append(" ephemeral"); 2614 } 2615 if (lastSavedConfigurationAttempt.selfAdded) { 2616 sb.append(" selfAdded"); 2617 } 2618 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2619 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2620 } 2621 break; 2622 case WifiManager.FORGET_NETWORK: 2623 sb.append(" "); 2624 sb.append(Integer.toString(msg.arg1)); 2625 sb.append(" "); 2626 sb.append(Integer.toString(msg.arg2)); 2627 if (lastForgetConfigurationAttempt != null) { 2628 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2629 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2630 if (lastForgetConfigurationAttempt.hiddenSSID) { 2631 sb.append(" hidden"); 2632 } 2633 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2634 sb.append(" hasPSK"); 2635 } 2636 if (lastForgetConfigurationAttempt.ephemeral) { 2637 sb.append(" ephemeral"); 2638 } 2639 if (lastForgetConfigurationAttempt.selfAdded) { 2640 sb.append(" selfAdded"); 2641 } 2642 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2643 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2644 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2645 } 2646 break; 2647 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2648 sb.append(" "); 2649 sb.append(Integer.toString(msg.arg1)); 2650 sb.append(" "); 2651 sb.append(Integer.toString(msg.arg2)); 2652 String bssid = (String)msg.obj; 2653 if (bssid != null && bssid.length()>0) { 2654 sb.append(" "); 2655 sb.append(bssid); 2656 } 2657 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2658 sb.append(printTime()); 2659 break; 2660 case WifiMonitor.SCAN_RESULTS_EVENT: 2661 sb.append(" "); 2662 sb.append(Integer.toString(msg.arg1)); 2663 sb.append(" "); 2664 sb.append(Integer.toString(msg.arg2)); 2665 if (mScanResults != null) { 2666 sb.append(" found="); 2667 sb.append(mScanResults.size()); 2668 } 2669 sb.append(" known=").append(mNumScanResultsKnown); 2670 sb.append(" got=").append(mNumScanResultsReturned); 2671 if (lastScanDuration != 0) { 2672 sb.append(" dur:").append(lastScanDuration); 2673 } 2674 if (mOnTime != 0) { 2675 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2676 sb.append(",").append(mOnTime); 2677 } 2678 if (mTxTime != 0) { 2679 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2680 sb.append(",").append(mTxTime); 2681 } 2682 if (mRxTime != 0) { 2683 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2684 sb.append(",").append(mRxTime); 2685 } 2686 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2687 sb.append(String.format(" con=%d", mConnectionRequests)); 2688 key = mWifiConfigStore.getLastSelectedConfiguration(); 2689 if (key != null) { 2690 sb.append(" last=").append(key); 2691 } 2692 break; 2693 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2694 sb.append(" "); 2695 sb.append(Integer.toString(msg.arg1)); 2696 sb.append(" "); 2697 sb.append(Integer.toString(msg.arg2)); 2698 sb.append(" ").append(mLastBssid); 2699 sb.append(" nid=").append(mLastNetworkId); 2700 config = getCurrentWifiConfiguration(); 2701 if (config != null) { 2702 sb.append(" ").append(config.configKey()); 2703 } 2704 sb.append(printTime()); 2705 key = mWifiConfigStore.getLastSelectedConfiguration(); 2706 if (key != null) { 2707 sb.append(" last=").append(key); 2708 } 2709 break; 2710 case CMD_TARGET_BSSID: 2711 case CMD_ASSOCIATED_BSSID: 2712 sb.append(" "); 2713 sb.append(Integer.toString(msg.arg1)); 2714 sb.append(" "); 2715 sb.append(Integer.toString(msg.arg2)); 2716 if (msg.obj != null) { 2717 sb.append(" BSSID=").append((String)msg.obj); 2718 } 2719 if (mTargetRoamBSSID != null) { 2720 sb.append(" Target=").append(mTargetRoamBSSID); 2721 } 2722 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2723 sb.append(printTime()); 2724 break; 2725 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2726 if (msg.obj != null) { 2727 sb.append(" ").append((String)msg.obj); 2728 } 2729 sb.append(" nid=").append(msg.arg1); 2730 sb.append(" reason=").append(msg.arg2); 2731 if (mLastBssid != null) { 2732 sb.append(" lastbssid=").append(mLastBssid); 2733 } 2734 if (mWifiInfo.getFrequency() != -1) { 2735 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2736 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2737 } 2738 if (linkDebouncing) { 2739 sb.append(" debounce"); 2740 } 2741 sb.append(printTime()); 2742 break; 2743 case WifiMonitor.SSID_TEMP_DISABLED: 2744 case WifiMonitor.SSID_REENABLED: 2745 sb.append(" nid=").append(msg.arg1); 2746 if (msg.obj != null) { 2747 sb.append(" ").append((String)msg.obj); 2748 } 2749 config = getCurrentWifiConfiguration(); 2750 if (config != null) { 2751 sb.append(" cur=").append(config.configKey()); 2752 sb.append(" ajst=").append(config.autoJoinStatus); 2753 if (config.selfAdded) { 2754 sb.append(" selfAdded"); 2755 } 2756 if (config.status != 0) { 2757 sb.append(" st=").append(config.status); 2758 sb.append(" rs=").append(config.disableReason); 2759 } 2760 if (config.lastConnected != 0) { 2761 now = System.currentTimeMillis(); 2762 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2763 } 2764 if (mLastBssid != null) { 2765 sb.append(" lastbssid=").append(mLastBssid); 2766 } 2767 if (mWifiInfo.getFrequency() != -1) { 2768 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2769 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2770 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2771 } 2772 } 2773 sb.append(printTime()); 2774 break; 2775 case CMD_RSSI_POLL: 2776 case CMD_UNWANTED_NETWORK: 2777 case WifiManager.RSSI_PKTCNT_FETCH: 2778 sb.append(" "); 2779 sb.append(Integer.toString(msg.arg1)); 2780 sb.append(" "); 2781 sb.append(Integer.toString(msg.arg2)); 2782 if (mWifiInfo.getSSID() != null) 2783 if (mWifiInfo.getSSID() != null) 2784 sb.append(" ").append(mWifiInfo.getSSID()); 2785 if (mWifiInfo.getBSSID() != null) 2786 sb.append(" ").append(mWifiInfo.getBSSID()); 2787 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2788 sb.append(" f=").append(mWifiInfo.getFrequency()); 2789 sb.append(" sc=").append(mWifiInfo.score); 2790 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2791 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2792 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2793 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2794 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2795 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2796 report = reportOnTime(); 2797 if (report != null) { 2798 sb.append(" ").append(report); 2799 } 2800 if (wifiScoringReport != null) { 2801 sb.append(wifiScoringReport); 2802 } 2803 break; 2804 case CMD_AUTO_CONNECT: 2805 case WifiManager.CONNECT_NETWORK: 2806 sb.append(" "); 2807 sb.append(Integer.toString(msg.arg1)); 2808 sb.append(" "); 2809 sb.append(Integer.toString(msg.arg2)); 2810 config = (WifiConfiguration) msg.obj; 2811 if (config != null) { 2812 sb.append(" ").append(config.configKey()); 2813 if (config.visibility != null) { 2814 sb.append(" ").append(config.visibility.toString()); 2815 } 2816 } 2817 if (mTargetRoamBSSID != null) { 2818 sb.append(" ").append(mTargetRoamBSSID); 2819 } 2820 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2821 sb.append(printTime()); 2822 config = getCurrentWifiConfiguration(); 2823 if (config != null) { 2824 sb.append(config.configKey()); 2825 if (config.visibility != null) { 2826 sb.append(" ").append(config.visibility.toString()); 2827 } 2828 } 2829 break; 2830 case CMD_AUTO_ROAM: 2831 sb.append(" "); 2832 sb.append(Integer.toString(msg.arg1)); 2833 sb.append(" "); 2834 sb.append(Integer.toString(msg.arg2)); 2835 ScanResult result = (ScanResult)msg.obj; 2836 if (result != null) { 2837 now = System.currentTimeMillis(); 2838 sb.append(" bssid=").append(result.BSSID); 2839 sb.append(" rssi=").append(result.level); 2840 sb.append(" freq=").append(result.frequency); 2841 if (result.seen > 0 && result.seen < now) { 2842 sb.append(" seen=").append(now - result.seen); 2843 } else { 2844 // Somehow the timestamp for this scan result is inconsistent 2845 sb.append(" !seen=").append(result.seen); 2846 } 2847 } 2848 if (mTargetRoamBSSID != null) { 2849 sb.append(" ").append(mTargetRoamBSSID); 2850 } 2851 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2852 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 2853 sb.append(printTime()); 2854 break; 2855 case CMD_ADD_OR_UPDATE_NETWORK: 2856 sb.append(" "); 2857 sb.append(Integer.toString(msg.arg1)); 2858 sb.append(" "); 2859 sb.append(Integer.toString(msg.arg2)); 2860 if (msg.obj != null) { 2861 config = (WifiConfiguration)msg.obj; 2862 sb.append(" ").append(config.configKey()); 2863 sb.append(" prio=").append(config.priority); 2864 sb.append(" status=").append(config.status); 2865 if (config.BSSID != null) { 2866 sb.append(" ").append(config.BSSID); 2867 } 2868 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 2869 if (curConfig != null) { 2870 if (curConfig.configKey().equals(config.configKey())) { 2871 sb.append(" is current"); 2872 } else { 2873 sb.append(" current=").append(curConfig.configKey()); 2874 sb.append(" prio=").append(curConfig.priority); 2875 sb.append(" status=").append(curConfig.status); 2876 } 2877 } 2878 } 2879 break; 2880 case WifiManager.DISABLE_NETWORK: 2881 case CMD_ENABLE_NETWORK: 2882 sb.append(" "); 2883 sb.append(Integer.toString(msg.arg1)); 2884 sb.append(" "); 2885 sb.append(Integer.toString(msg.arg2)); 2886 key = mWifiConfigStore.getLastSelectedConfiguration(); 2887 if (key != null) { 2888 sb.append(" last=").append(key); 2889 } 2890 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 2891 if (config != null && (key == null || !config.configKey().equals(key))) { 2892 sb.append(" target=").append(key); 2893 } 2894 break; 2895 case CMD_GET_CONFIGURED_NETWORKS: 2896 sb.append(" "); 2897 sb.append(Integer.toString(msg.arg1)); 2898 sb.append(" "); 2899 sb.append(Integer.toString(msg.arg2)); 2900 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 2901 break; 2902 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 2903 sb.append(" "); 2904 sb.append(Integer.toString(msg.arg1)); 2905 sb.append(" "); 2906 sb.append(Integer.toString(msg.arg2)); 2907 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2908 sb.append(",").append(mWifiInfo.txBad); 2909 sb.append(",").append(mWifiInfo.txRetries); 2910 break; 2911 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 2912 sb.append(" "); 2913 sb.append(Integer.toString(msg.arg1)); 2914 sb.append(" "); 2915 sb.append(Integer.toString(msg.arg2)); 2916 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 2917 sb.append(" OK "); 2918 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 2919 sb.append(" FAIL "); 2920 } 2921 if (mLinkProperties != null) { 2922 if (mLinkProperties.hasIPv4Address()) { 2923 sb.append(" v4"); 2924 } 2925 if (mLinkProperties.hasGlobalIPv6Address()) { 2926 sb.append(" v6"); 2927 } 2928 if (mLinkProperties.hasIPv4DefaultRoute()) { 2929 sb.append(" v4r"); 2930 } 2931 if (mLinkProperties.hasIPv6DefaultRoute()) { 2932 sb.append(" v6r"); 2933 } 2934 if (mLinkProperties.hasIPv4DnsServer()) { 2935 sb.append(" v4dns"); 2936 } 2937 if (mLinkProperties.hasIPv6DnsServer()) { 2938 sb.append(" v6dns"); 2939 } 2940 } 2941 break; 2942 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 2943 sb.append(" "); 2944 sb.append(Integer.toString(msg.arg1)); 2945 sb.append(" "); 2946 sb.append(Integer.toString(msg.arg2)); 2947 if (msg.obj != null) { 2948 NetworkInfo info = (NetworkInfo)msg.obj; 2949 NetworkInfo.State state = info.getState(); 2950 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 2951 if (state != null) { 2952 sb.append(" st=").append(state); 2953 } 2954 if (detailedState != null) { 2955 sb.append("/").append(detailedState); 2956 } 2957 } 2958 break; 2959 case CMD_IP_CONFIGURATION_LOST: 2960 int count = -1; 2961 WifiConfiguration c = getCurrentWifiConfiguration(); 2962 if (c != null) count = c.numIpConfigFailures; 2963 sb.append(" "); 2964 sb.append(Integer.toString(msg.arg1)); 2965 sb.append(" "); 2966 sb.append(Integer.toString(msg.arg2)); 2967 sb.append(" failures: "); 2968 sb.append(Integer.toString(count)); 2969 sb.append("/"); 2970 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 2971 if (mWifiInfo.getBSSID() != null) { 2972 sb.append(" ").append(mWifiInfo.getBSSID()); 2973 } 2974 if (c != null) { 2975 WifiConfigStore.ScanDetailCache scanDetailCache = 2976 mWifiConfigStore.getScanDetailCache(c); 2977 if (scanDetailCache != null) { 2978 for (ScanDetail sd : scanDetailCache.values()) { 2979 ScanResult r = sd.getScanResult(); 2980 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 2981 sb.append(" ipfail=").append(r.numIpConfigFailures); 2982 sb.append(",st=").append(r.autoJoinStatus); 2983 } 2984 } 2985 } 2986 sb.append(" -> ajst=").append(c.autoJoinStatus); 2987 sb.append(" ").append(c.disableReason); 2988 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2989 sb.append(",").append(mWifiInfo.txBad); 2990 sb.append(",").append(mWifiInfo.txRetries); 2991 } 2992 sb.append(printTime()); 2993 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2994 break; 2995 case CMD_UPDATE_LINKPROPERTIES: 2996 sb.append(" "); 2997 sb.append(Integer.toString(msg.arg1)); 2998 sb.append(" "); 2999 sb.append(Integer.toString(msg.arg2)); 3000 if (mLinkProperties != null) { 3001 if (mLinkProperties.hasIPv4Address()) { 3002 sb.append(" v4"); 3003 } 3004 if (mLinkProperties.hasGlobalIPv6Address()) { 3005 sb.append(" v6"); 3006 } 3007 if (mLinkProperties.hasIPv4DefaultRoute()) { 3008 sb.append(" v4r"); 3009 } 3010 if (mLinkProperties.hasIPv6DefaultRoute()) { 3011 sb.append(" v6r"); 3012 } 3013 if (mLinkProperties.hasIPv4DnsServer()) { 3014 sb.append(" v4dns"); 3015 } 3016 if (mLinkProperties.hasIPv6DnsServer()) { 3017 sb.append(" v6dns"); 3018 } 3019 } 3020 break; 3021 case CMD_SET_COUNTRY_CODE: 3022 sb.append(" "); 3023 sb.append(Integer.toString(msg.arg1)); 3024 sb.append(" "); 3025 sb.append(Integer.toString(msg.arg2)); 3026 if (msg.obj != null) { 3027 sb.append(" ").append((String)msg.obj); 3028 } 3029 break; 3030 case CMD_ROAM_WATCHDOG_TIMER: 3031 sb.append(" "); 3032 sb.append(Integer.toString(msg.arg1)); 3033 sb.append(" "); 3034 sb.append(Integer.toString(msg.arg2)); 3035 sb.append(" cur=").append(roamWatchdogCount); 3036 break; 3037 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3038 sb.append(" "); 3039 sb.append(Integer.toString(msg.arg1)); 3040 sb.append(" "); 3041 sb.append(Integer.toString(msg.arg2)); 3042 sb.append(" cur=").append(disconnectingWatchdogCount); 3043 break; 3044 default: 3045 sb.append(" "); 3046 sb.append(Integer.toString(msg.arg1)); 3047 sb.append(" "); 3048 sb.append(Integer.toString(msg.arg2)); 3049 break; 3050 } 3051 3052 return sb.toString(); 3053 } 3054 3055 private void handleScreenStateChanged(boolean screenOn, boolean startBackgroundScanIfNeeded) { 3056 mScreenOn = screenOn; 3057 if (PDBG) { 3058 loge(" handleScreenStateChanged Enter: screenOn=" + screenOn 3059 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3060 + " state " + getCurrentState().getName() 3061 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3062 } 3063 enableRssiPolling(screenOn); 3064 if (screenOn) enableAllNetworks(); 3065 if (mUserWantsSuspendOpt.get()) { 3066 if (screenOn) { 3067 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3068 } else { 3069 // Allow 2s for suspend optimizations to be set 3070 mSuspendWakeLock.acquire(2000); 3071 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3072 } 3073 } 3074 mScreenBroadcastReceived.set(true); 3075 3076 getWifiLinkLayerStats(false); 3077 mOnTimeScreenStateChange = mOnTime; 3078 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3079 mEnableBackgroundScan = false; 3080 cancelDelayedScan(); 3081 3082 if (screenOn) { 3083 setScanAlarm(false); 3084 clearBlacklist(); 3085 3086 fullBandConnectedTimeIntervalMilli = mWifiConfigStore.associatedPartialScanPeriodMilli.get(); 3087 // In either Disconnectedstate or ConnectedState, 3088 // start the scan alarm so as to enable autojoin 3089 if (getCurrentState() == mConnectedState 3090 && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 3091 // Scan after 500ms 3092 startDelayedScan(500, null, null); 3093 } else if (getCurrentState() == mDisconnectedState) { 3094 // Scan after 200ms 3095 startDelayedScan(200, null, null); 3096 } 3097 } else if (startBackgroundScanIfNeeded) { 3098 // Screen Off and Disconnected and chipset doesn't support scan offload 3099 // => start scan alarm 3100 // Screen Off and Disconnected and chipset does support scan offload 3101 // => will use scan offload (i.e. background scan) 3102 if (!mBackgroundScanSupported) { 3103 setScanAlarm(true); 3104 } else { 3105 mEnableBackgroundScan = true; 3106 } 3107 } 3108 if (DBG) logd("backgroundScan enabled=" + mEnableBackgroundScan 3109 + " startBackgroundScanIfNeeded:" + startBackgroundScanIfNeeded); 3110 if (startBackgroundScanIfNeeded) { 3111 // to scan for them in background, we need all networks enabled 3112 enableBackgroundScan(mEnableBackgroundScan); 3113 } 3114 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3115 } 3116 3117 private void checkAndSetConnectivityInstance() { 3118 if (mCm == null) { 3119 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3120 } 3121 } 3122 3123 private boolean startTethering(ArrayList<String> available) { 3124 3125 boolean wifiAvailable = false; 3126 3127 checkAndSetConnectivityInstance(); 3128 3129 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3130 3131 for (String intf : available) { 3132 for (String regex : wifiRegexs) { 3133 if (intf.matches(regex)) { 3134 3135 InterfaceConfiguration ifcg = null; 3136 try { 3137 ifcg = mNwService.getInterfaceConfig(intf); 3138 if (ifcg != null) { 3139 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3140 ifcg.setLinkAddress(new LinkAddress( 3141 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3142 ifcg.setInterfaceUp(); 3143 3144 mNwService.setInterfaceConfig(intf, ifcg); 3145 } 3146 } catch (Exception e) { 3147 loge("Error configuring interface " + intf + ", :" + e); 3148 return false; 3149 } 3150 3151 if(mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3152 loge("Error tethering on " + intf); 3153 return false; 3154 } 3155 mTetherInterfaceName = intf; 3156 return true; 3157 } 3158 } 3159 } 3160 // We found no interfaces to tether 3161 return false; 3162 } 3163 3164 private void stopTethering() { 3165 3166 checkAndSetConnectivityInstance(); 3167 3168 /* Clear the interface config to allow dhcp correctly configure new 3169 ip settings */ 3170 InterfaceConfiguration ifcg = null; 3171 try { 3172 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3173 if (ifcg != null) { 3174 ifcg.setLinkAddress( 3175 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3176 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3177 } 3178 } catch (Exception e) { 3179 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3180 } 3181 3182 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3183 loge("Untether initiate failed!"); 3184 } 3185 } 3186 3187 private boolean isWifiTethered(ArrayList<String> active) { 3188 3189 checkAndSetConnectivityInstance(); 3190 3191 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3192 for (String intf : active) { 3193 for (String regex : wifiRegexs) { 3194 if (intf.matches(regex)) { 3195 return true; 3196 } 3197 } 3198 } 3199 // We found no interfaces that are tethered 3200 return false; 3201 } 3202 3203 /** 3204 * Set the country code from the system setting value, if any. 3205 */ 3206 private void setCountryCode() { 3207 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 3208 Settings.Global.WIFI_COUNTRY_CODE); 3209 if (countryCode != null && !countryCode.isEmpty()) { 3210 setCountryCode(countryCode, false); 3211 } else { 3212 //use driver default 3213 } 3214 } 3215 3216 /** 3217 * Set the frequency band from the system setting value, if any. 3218 */ 3219 private void setFrequencyBand() { 3220 int band = Settings.Global.getInt(mContext.getContentResolver(), 3221 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3222 setFrequencyBand(band, false); 3223 } 3224 3225 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3226 if (DBG) { 3227 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3228 + " -want " + mUserWantsSuspendOpt.get() 3229 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3230 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 3231 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 3232 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 3233 } 3234 //mWifiNative.setSuspendOptimizations(enabled); 3235 3236 if (enabled) { 3237 mSuspendOptNeedsDisabled &= ~reason; 3238 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3239 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3240 if (DBG) { 3241 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3242 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3243 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 3244 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 3245 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 3246 } 3247 mWifiNative.setSuspendOptimizations(true); 3248 } 3249 } else { 3250 mSuspendOptNeedsDisabled |= reason; 3251 mWifiNative.setSuspendOptimizations(false); 3252 } 3253 } 3254 3255 private void setSuspendOptimizations(int reason, boolean enabled) { 3256 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3257 if (enabled) { 3258 mSuspendOptNeedsDisabled &= ~reason; 3259 } else { 3260 mSuspendOptNeedsDisabled |= reason; 3261 } 3262 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3263 } 3264 3265 private void setWifiState(int wifiState) { 3266 final int previousWifiState = mWifiState.get(); 3267 3268 try { 3269 if (wifiState == WIFI_STATE_ENABLED) { 3270 mBatteryStats.noteWifiOn(); 3271 } else if (wifiState == WIFI_STATE_DISABLED) { 3272 mBatteryStats.noteWifiOff(); 3273 } 3274 } catch (RemoteException e) { 3275 loge("Failed to note battery stats in wifi"); 3276 } 3277 3278 mWifiState.set(wifiState); 3279 3280 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3281 3282 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3283 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3284 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3285 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3286 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3287 } 3288 3289 private void setWifiApState(int wifiApState) { 3290 final int previousWifiApState = mWifiApState.get(); 3291 3292 try { 3293 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3294 mBatteryStats.noteWifiOn(); 3295 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3296 mBatteryStats.noteWifiOff(); 3297 } 3298 } catch (RemoteException e) { 3299 loge("Failed to note battery stats in wifi"); 3300 } 3301 3302 // Update state 3303 mWifiApState.set(wifiApState); 3304 3305 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3306 3307 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3308 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3309 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3310 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3311 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3312 } 3313 3314 /* 3315 void ageOutScanResults(int age) { 3316 synchronized(mScanResultCache) { 3317 // Trim mScanResults, which prevent WifiStateMachine to return 3318 // obsolete scan results to queriers 3319 long now = System.CurrentTimeMillis(); 3320 for (int i = 0; i < mScanResults.size(); i++) { 3321 ScanResult result = mScanResults.get(i); 3322 if ((result.seen > now || (now - result.seen) > age)) { 3323 mScanResults.remove(i); 3324 } 3325 } 3326 } 3327 }*/ 3328 3329 private static final String IE_STR = "ie="; 3330 private static final String ID_STR = "id="; 3331 private static final String BSSID_STR = "bssid="; 3332 private static final String FREQ_STR = "freq="; 3333 private static final String LEVEL_STR = "level="; 3334 private static final String TSF_STR = "tsf="; 3335 private static final String FLAGS_STR = "flags="; 3336 private static final String SSID_STR = "ssid="; 3337 private static final String DELIMITER_STR = "===="; 3338 private static final String END_STR = "####"; 3339 3340 int emptyScanResultCount = 0; 3341 3342 // Used for matching BSSID strings, at least one characteer must be a non-zero number 3343 private static Pattern mNotZero = Pattern.compile("[1-9a-fA-F]"); 3344 3345 /** 3346 * Format: 3347 * 3348 * id=1 3349 * bssid=68:7f:76:d7:1a:6e 3350 * freq=2412 3351 * level=-44 3352 * tsf=1344626243700342 3353 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3354 * ssid=zfdy 3355 * ==== 3356 * id=2 3357 * bssid=68:5f:74:d7:1a:6f 3358 * freq=5180 3359 * level=-73 3360 * tsf=1344626243700373 3361 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3362 * ssid=zuby 3363 * ==== 3364 */ 3365 private void setScanResults() { 3366 mNumScanResultsKnown = 0; 3367 mNumScanResultsReturned = 0; 3368 String bssid = ""; 3369 int level = 0; 3370 int freq = 0; 3371 long tsf = 0; 3372 String flags = ""; 3373 WifiSsid wifiSsid = null; 3374 String scanResults; 3375 String tmpResults; 3376 StringBuffer scanResultsBuf = new StringBuffer(); 3377 int sid = 0; 3378 3379 while (true) { 3380 tmpResults = mWifiNative.scanResults(sid); 3381 if (TextUtils.isEmpty(tmpResults)) break; 3382 scanResultsBuf.append(tmpResults); 3383 scanResultsBuf.append("\n"); 3384 String[] lines = tmpResults.split("\n"); 3385 sid = -1; 3386 for (int i=lines.length - 1; i >= 0; i--) { 3387 if (lines[i].startsWith(END_STR)) { 3388 break; 3389 } else if (lines[i].startsWith(ID_STR)) { 3390 try { 3391 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3392 } catch (NumberFormatException e) { 3393 // Nothing to do 3394 } 3395 break; 3396 } 3397 } 3398 if (sid == -1) break; 3399 } 3400 3401 // Age out scan results, we return all scan results found in the last 12 seconds, 3402 // and NOT all scan results since last scan. 3403 // ageOutScanResults(12000); 3404 3405 scanResults = scanResultsBuf.toString(); 3406 if (TextUtils.isEmpty(scanResults)) { 3407 emptyScanResultCount++; 3408 if (emptyScanResultCount > 10) { 3409 // If we got too many empty scan results, the current scan cache is stale, 3410 // hence clear it. 3411 mScanResults = new ArrayList<>(); 3412 } 3413 return; 3414 } 3415 3416 emptyScanResultCount = 0; 3417 3418 // note that all these splits and substrings keep references to the original 3419 // huge string buffer while the amount we really want is generally pretty small 3420 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3421 synchronized(mScanResultCache) { 3422 mScanResults = new ArrayList<>(); 3423 String[] lines = scanResults.split("\n"); 3424 final int bssidStrLen = BSSID_STR.length(); 3425 final int flagLen = FLAGS_STR.length(); 3426 String infoElements = null; 3427 List<String> anqpLines = null; 3428 3429 for (String line : lines) { 3430 if (line.startsWith(BSSID_STR)) { 3431 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3432 } else if (line.startsWith(FREQ_STR)) { 3433 try { 3434 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3435 } catch (NumberFormatException e) { 3436 freq = 0; 3437 } 3438 } else if (line.startsWith(LEVEL_STR)) { 3439 try { 3440 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3441 /* some implementations avoid negative values by adding 256 3442 * so we need to adjust for that here. 3443 */ 3444 if (level > 0) level -= 256; 3445 } catch(NumberFormatException e) { 3446 level = 0; 3447 } 3448 } else if (line.startsWith(TSF_STR)) { 3449 try { 3450 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3451 } catch (NumberFormatException e) { 3452 tsf = 0; 3453 } 3454 } else if (line.startsWith(FLAGS_STR)) { 3455 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3456 } else if (line.startsWith(SSID_STR)) { 3457 wifiSsid = WifiSsid.createFromAsciiEncoded( 3458 line.substring(SSID_STR.length())); 3459 } else if (line.startsWith(IE_STR)) { 3460 infoElements = line; 3461 } else if (SupplicantBridge.isAnqpAttribute(line)) { 3462 if (anqpLines == null) { 3463 anqpLines = new ArrayList<>(); 3464 } 3465 anqpLines.add(line); 3466 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3467 if (bssid != null) { 3468 try { 3469 NetworkDetail networkDetail = 3470 new NetworkDetail(bssid, infoElements, anqpLines, freq); 3471 3472 String xssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3473 if (!xssid.equals(networkDetail.getSSID())) { 3474 Log.d("HS2J", "Inconsistency: SSID: '" + xssid + 3475 "' vs '" + networkDetail.getSSID() + "': " + infoElements); 3476 } 3477 3478 if (networkDetail.hasInterworking()) { 3479 Log.d("HS2J", "HSNwk: '" + networkDetail); 3480 } 3481 3482 ScanDetail scanDetail = mScanResultCache.get(networkDetail); 3483 if (scanDetail != null) { 3484 scanDetail.updateResults(networkDetail, level, wifiSsid, xssid, 3485 flags, freq, tsf); 3486 } else { 3487 scanDetail = new ScanDetail(networkDetail, wifiSsid, bssid, 3488 flags, level, freq, tsf); 3489 mScanResultCache.put(networkDetail, scanDetail); 3490 } 3491 3492 mNumScanResultsReturned++; // Keep track of how many scan results we got 3493 // as part of this scan's processing 3494 mScanResults.add(scanDetail); 3495 } 3496 catch (IllegalArgumentException | BufferUnderflowException e) { 3497 Log.d("HS2J", "Failed to parse information elements: " + e); 3498 } 3499 } 3500 bssid = null; 3501 level = 0; 3502 freq = 0; 3503 tsf = 0; 3504 flags = ""; 3505 wifiSsid = null; 3506 infoElements = null; 3507 anqpLines = null; 3508 } 3509 } 3510 } 3511 3512 boolean attemptAutoJoin = true; 3513 SupplicantState state = mWifiInfo.getSupplicantState(); 3514 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 3515 if (getCurrentState() == mRoamingState 3516 || getCurrentState() == mObtainingIpState 3517 || getCurrentState() == mScanModeState 3518 || getCurrentState() == mDisconnectingState 3519 || (getCurrentState() == mConnectedState 3520 && !mWifiConfigStore.enableAutoJoinWhenAssociated.get()) 3521 || linkDebouncing 3522 || state == SupplicantState.ASSOCIATING 3523 || state == SupplicantState.AUTHENTICATING 3524 || state == SupplicantState.FOUR_WAY_HANDSHAKE 3525 || state == SupplicantState.GROUP_HANDSHAKE 3526 || (/* keep autojoin enabled if user has manually selected a wifi network, 3527 so as to make sure we reliably remain connected to this network */ 3528 mConnectionRequests == 0 && selection == null)) { 3529 // Dont attempt auto-joining again while we are already attempting to join 3530 // and/or obtaining Ip address 3531 attemptAutoJoin = false; 3532 } 3533 if (DBG) { 3534 if (selection == null) { 3535 selection = "<none>"; 3536 } 3537 loge("wifi setScanResults state" + getCurrentState() 3538 + " sup_state=" + state 3539 + " debouncing=" + linkDebouncing 3540 + " mConnectionRequests=" + mConnectionRequests 3541 + " selection=" + selection); 3542 } 3543 if (attemptAutoJoin) { 3544 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 3545 } 3546 // Loose last selected configuration if we have been disconnected for 5 minutes 3547 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 3548 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 3549 } 3550 3551 if (mWifiConfigStore.enableAutoJoinWhenAssociated.get()) { 3552 synchronized(mScanResultCache) { 3553 // AutoJoincontroller will directly acces the scan result list and update it with 3554 // ScanResult status 3555 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 3556 } 3557 } 3558 if (linkDebouncing) { 3559 // If debouncing, we dont re-select a SSID or BSSID hence 3560 // there is no need to call the network selection code 3561 // in WifiAutoJoinController, instead, 3562 // just try to reconnect to the same SSID by triggering a roam 3563 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3564 } 3565 } 3566 3567 /* 3568 * Fetch RSSI, linkspeed, and frequency on current connection 3569 */ 3570 private void fetchRssiLinkSpeedAndFrequencyNative() { 3571 int newRssi = -1; 3572 int newLinkSpeed = -1; 3573 int newFrequency = -1; 3574 3575 String signalPoll = mWifiNative.signalPoll(); 3576 3577 if (signalPoll != null) { 3578 String[] lines = signalPoll.split("\n"); 3579 for (String line : lines) { 3580 String[] prop = line.split("="); 3581 if (prop.length < 2) continue; 3582 try { 3583 if (prop[0].equals("RSSI")) { 3584 newRssi = Integer.parseInt(prop[1]); 3585 } else if (prop[0].equals("LINKSPEED")) { 3586 newLinkSpeed = Integer.parseInt(prop[1]); 3587 } else if (prop[0].equals("FREQUENCY")) { 3588 newFrequency = Integer.parseInt(prop[1]); 3589 } 3590 } catch (NumberFormatException e) { 3591 //Ignore, defaults on rssi and linkspeed are assigned 3592 } 3593 } 3594 } 3595 3596 if (PDBG) { 3597 loge("fetchRssiLinkSpeedAndFrequencyNative rssi=" 3598 + Integer.toString(newRssi) + " linkspeed=" 3599 + Integer.toString(newLinkSpeed)); 3600 } 3601 3602 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 3603 // screen out invalid values 3604 /* some implementations avoid negative values by adding 256 3605 * so we need to adjust for that here. 3606 */ 3607 if (newRssi > 0) newRssi -= 256; 3608 mWifiInfo.setRssi(newRssi); 3609 /* 3610 * Rather then sending the raw RSSI out every time it 3611 * changes, we precalculate the signal level that would 3612 * be displayed in the status bar, and only send the 3613 * broadcast if that much more coarse-grained number 3614 * changes. This cuts down greatly on the number of 3615 * broadcasts, at the cost of not informing others 3616 * interested in RSSI of all the changes in signal 3617 * level. 3618 */ 3619 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 3620 if (newSignalLevel != mLastSignalLevel) { 3621 sendRssiChangeBroadcast(newRssi); 3622 } 3623 mLastSignalLevel = newSignalLevel; 3624 } else { 3625 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 3626 } 3627 3628 if (newLinkSpeed != -1) { 3629 mWifiInfo.setLinkSpeed(newLinkSpeed); 3630 } 3631 if (newFrequency > 0) { 3632 if (ScanResult.is5GHz(newFrequency)) { 3633 mWifiConnectionStatistics.num5GhzConnected++; 3634 } 3635 if (ScanResult.is24GHz(newFrequency)) { 3636 mWifiConnectionStatistics.num24GhzConnected++; 3637 } 3638 mWifiInfo.setFrequency(newFrequency); 3639 } 3640 mWifiConfigStore.updateConfiguration(mWifiInfo); 3641 } 3642 3643 /** 3644 * Determine if we need to switch network: 3645 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 3646 * - match the uregncy of the switch versus the packet usage at the interface 3647 */ 3648 boolean shouldSwitchNetwork(int networkDelta) { 3649 int delta; 3650 if (networkDelta <= 0) { 3651 return false; 3652 } 3653 delta = networkDelta; 3654 if (mWifiInfo != null) { 3655 if (!mWifiConfigStore.enableAutoJoinWhenAssociated.get() 3656 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 3657 // If AutoJoin while associated is not enabled, 3658 // we should never switch network when already associated 3659 delta = -1000; 3660 } else { 3661 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 3662 // TODO: at the interface. We should also discriminate between ucast and mcast, 3663 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 3664 // TODO: broadcasts 3665 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 3666 delta -= 999; 3667 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 3668 delta -= 6; 3669 } 3670 loge("WifiStateMachine shouldSwitchNetwork " 3671 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3672 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3673 + " delta " + networkDelta + " -> " + delta); 3674 } 3675 } else { 3676 loge("WifiStateMachine shouldSwitchNetwork " 3677 + " delta " + networkDelta + " -> " + delta); 3678 } 3679 if (delta > 0) { 3680 return true; 3681 } 3682 return false; 3683 } 3684 3685 // Polling has completed, hence we wont have a score anymore 3686 private void cleanWifiScore() { 3687 mWifiInfo.txBadRate = 0; 3688 mWifiInfo.txSuccessRate = 0; 3689 mWifiInfo.txRetriesRate = 0; 3690 mWifiInfo.rxSuccessRate = 0; 3691 } 3692 3693 int mBadLinkspeedcount = 0; 3694 3695 // For debug, provide information about the last scoring operation 3696 String wifiScoringReport = null; 3697 private void calculateWifiScore(WifiLinkLayerStats stats) { 3698 StringBuilder sb = new StringBuilder(); 3699 3700 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 3701 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 3702 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 3703 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3704 < mWifiConfigStore.badLinkSpeed5); 3705 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 3706 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 3707 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3708 >= mWifiConfigStore.goodLinkSpeed5); 3709 3710 if (isBadLinkspeed) { 3711 if (mBadLinkspeedcount < 6) 3712 mBadLinkspeedcount++; 3713 } else { 3714 if (mBadLinkspeedcount > 0) 3715 mBadLinkspeedcount--; 3716 } 3717 3718 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 3719 if (isGoodLinkspeed) sb.append(" gl"); 3720 3721 /** 3722 * We want to make sure that we use the 24GHz RSSI thresholds if 3723 * there are 2.4GHz scan results 3724 * otherwise we end up lowering the score based on 5GHz values 3725 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 3726 * We also might unblacklist the configuation based on 2.4GHz 3727 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 3728 */ 3729 boolean use24Thresholds = false; 3730 boolean homeNetworkBoost = false; 3731 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 3732 WifiConfigStore.ScanDetailCache scanDetailCache = 3733 mWifiConfigStore.getScanDetailCache(currentConfiguration); 3734 if (currentConfiguration != null && scanDetailCache != null) { 3735 currentConfiguration.setVisibility(scanDetailCache.getVisibility(12000)); 3736 if (currentConfiguration.visibility != null) { 3737 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 3738 && currentConfiguration.visibility.rssi24 3739 >= (currentConfiguration.visibility.rssi5-2)) { 3740 use24Thresholds = true; 3741 } 3742 } 3743 if (scanDetailCache.size() <= 6 3744 && currentConfiguration.allowedKeyManagement.cardinality() == 1 3745 && currentConfiguration.allowedKeyManagement. 3746 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 3747 // A PSK network with less than 6 known BSSIDs 3748 // This is most likely a home network and thus we want to stick to wifi more 3749 homeNetworkBoost = true; 3750 } 3751 } 3752 if (homeNetworkBoost) sb.append(" hn"); 3753 if (use24Thresholds) sb.append(" u24"); 3754 3755 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 3756 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 3757 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 3758 3759 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 3760 3761 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 3762 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 3763 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 3764 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 3765 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 3766 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 3767 3768 if (isBadRSSI) sb.append(" br"); 3769 if (isLowRSSI) sb.append(" lr"); 3770 if (isHighRSSI) sb.append(" hr"); 3771 3772 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 3773 if (currentConfiguration!= null && 3774 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 3775 if (isBadRSSI) { 3776 currentConfiguration.numTicksAtBadRSSI++; 3777 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 3778 // We remained associated for a compound amount of time while passing 3779 // traffic, hence loose the corresponding user triggered disabled stats 3780 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 3781 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 3782 } 3783 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3784 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3785 } 3786 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3787 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3788 } 3789 currentConfiguration.numTicksAtBadRSSI = 0; 3790 } 3791 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3792 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 3793 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3794 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3795 score = score -5; 3796 penalizedDueToUserTriggeredDisconnect = 1; 3797 sb.append(" p1"); 3798 } 3799 } else if (isLowRSSI) { 3800 currentConfiguration.numTicksAtLowRSSI++; 3801 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 3802 // We remained associated for a compound amount of time while passing 3803 // traffic, hence loose the corresponding user triggered disabled stats 3804 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3805 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3806 } 3807 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3808 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3809 } 3810 currentConfiguration.numTicksAtLowRSSI = 0; 3811 } 3812 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3813 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3814 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3815 score = score -5; 3816 penalizedDueToUserTriggeredDisconnect = 2; 3817 sb.append(" p2"); 3818 } 3819 } else if (!isHighRSSI) { 3820 currentConfiguration.numTicksAtNotHighRSSI++; 3821 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 3822 // We remained associated for a compound amount of time while passing 3823 // traffic, hence loose the corresponding user triggered disabled stats 3824 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3825 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3826 } 3827 currentConfiguration.numTicksAtNotHighRSSI = 0; 3828 } 3829 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3830 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3831 score = score -5; 3832 penalizedDueToUserTriggeredDisconnect = 3; 3833 sb.append(" p3"); 3834 } 3835 } 3836 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 3837 currentConfiguration.numTicksAtLowRSSI, 3838 currentConfiguration.numTicksAtNotHighRSSI)); 3839 } 3840 3841 if (PDBG) { 3842 String rssiStatus = ""; 3843 if (isBadRSSI) rssiStatus += " badRSSI "; 3844 else if (isHighRSSI) rssiStatus += " highRSSI "; 3845 else if (isLowRSSI) rssiStatus += " lowRSSI "; 3846 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 3847 loge("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 3848 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 3849 + " score=" + Integer.toString(mWifiInfo.score) 3850 + rssiStatus 3851 + " -> txbadrate=" + String.format( "%.2f", mWifiInfo.txBadRate ) 3852 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3853 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 3854 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3855 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 3856 } 3857 3858 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 3859 && (isBadRSSI || isLowRSSI)) { 3860 // Link is stuck 3861 if (mWifiInfo.linkStuckCount < 5) 3862 mWifiInfo.linkStuckCount += 1; 3863 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 3864 if (PDBG) loge(" bad link -> stuck count =" 3865 + Integer.toString(mWifiInfo.linkStuckCount)); 3866 } else if (mWifiInfo.txSuccessRate > 2 || mWifiInfo.txBadRate < 0.1) { 3867 if (mWifiInfo.linkStuckCount > 0) 3868 mWifiInfo.linkStuckCount -= 1; 3869 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 3870 if (PDBG) loge(" good link -> stuck count =" 3871 + Integer.toString(mWifiInfo.linkStuckCount)); 3872 } 3873 3874 sb.append(String.format(" [%d", score)); 3875 3876 if (mWifiInfo.linkStuckCount > 1) { 3877 // Once link gets stuck for more than 3 seconds, start reducing the score 3878 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 3879 } 3880 sb.append(String.format(",%d", score)); 3881 3882 if (isBadLinkspeed) { 3883 score -= 4 ; 3884 if (PDBG) { 3885 loge(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 3886 + " score=" + Integer.toString(score)); 3887 } 3888 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 3889 score += 4; // So as bad rssi alone dont kill us 3890 } 3891 sb.append(String.format(",%d", score)); 3892 3893 if (isBadRSSI) { 3894 if (mWifiInfo.badRssiCount < 7) 3895 mWifiInfo.badRssiCount += 1; 3896 } else if (isLowRSSI) { 3897 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 3898 if (mWifiInfo.badRssiCount > 0) { 3899 // Decrement bad Rssi count 3900 mWifiInfo.badRssiCount -= 1; 3901 } 3902 } else { 3903 mWifiInfo.badRssiCount = 0; 3904 mWifiInfo.lowRssiCount = 0; 3905 } 3906 3907 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount ; 3908 sb.append(String.format(",%d", score)); 3909 3910 if (PDBG) loge(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 3911 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 3912 + " --> score " + Integer.toString(score)); 3913 3914 3915 if (isHighRSSI) { 3916 score += 5; 3917 if (PDBG) loge(" isHighRSSI ---> score=" + Integer.toString(score)); 3918 } 3919 sb.append(String.format(",%d]", score)); 3920 3921 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 3922 3923 //sanitize boundaries 3924 if (score > NetworkAgent.WIFI_BASE_SCORE) 3925 score = NetworkAgent.WIFI_BASE_SCORE; 3926 if (score < 0) 3927 score = 0; 3928 3929 //report score 3930 if (score != mWifiInfo.score) { 3931 if (DBG) { 3932 loge("calculateWifiScore() report new score " + Integer.toString(score)); 3933 } 3934 mWifiInfo.score = score; 3935 if (mNetworkAgent != null) { 3936 mNetworkAgent.sendNetworkScore(score); 3937 } 3938 } 3939 wifiScoringReport = sb.toString(); 3940 } 3941 3942 public double getTxPacketRate() { 3943 if (mWifiInfo != null) { 3944 return mWifiInfo.txSuccessRate; 3945 } 3946 return -1; 3947 } 3948 3949 public double getRxPacketRate() { 3950 if (mWifiInfo != null) { 3951 return mWifiInfo.rxSuccessRate; 3952 } 3953 return -1; 3954 } 3955 3956 /** 3957 * Fetch TX packet counters on current connection 3958 */ 3959 private void fetchPktcntNative(RssiPacketCountInfo info) { 3960 String pktcntPoll = mWifiNative.pktcntPoll(); 3961 3962 if (pktcntPoll != null) { 3963 String[] lines = pktcntPoll.split("\n"); 3964 for (String line : lines) { 3965 String[] prop = line.split("="); 3966 if (prop.length < 2) continue; 3967 try { 3968 if (prop[0].equals("TXGOOD")) { 3969 info.txgood = Integer.parseInt(prop[1]); 3970 } else if (prop[0].equals("TXBAD")) { 3971 info.txbad = Integer.parseInt(prop[1]); 3972 } 3973 } catch (NumberFormatException e) { 3974 // Ignore 3975 } 3976 } 3977 } 3978 } 3979 3980 private boolean clearIPv4Address(String iface) { 3981 try { 3982 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 3983 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 3984 mNwService.setInterfaceConfig(iface, ifcg); 3985 return true; 3986 } catch (RemoteException e) { 3987 return false; 3988 } 3989 } 3990 3991 private boolean isProvisioned(LinkProperties lp) { 3992 return lp.isProvisioned() || 3993 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 3994 } 3995 3996 /** 3997 * Updates mLinkProperties by merging information from various sources. 3998 * 3999 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 4000 * netlink, static configuration, ...). When one of these sources of information has updated 4001 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 4002 * information that came from other sources. Instead, when one of those sources has new 4003 * information, we update the object that tracks the information from that source and then 4004 * call this method to apply the change to mLinkProperties. 4005 * 4006 * The information in mLinkProperties is currently obtained as follows: 4007 * - Interface name: set in the constructor. 4008 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4009 * - IPv4 routes, DNS servers, and domains: DHCP. 4010 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4011 * - HTTP proxy: the wifi config store. 4012 */ 4013 private void updateLinkProperties(int reason) { 4014 LinkProperties newLp = new LinkProperties(); 4015 4016 // Interface name and proxy are locally configured. 4017 newLp.setInterfaceName(mInterfaceName); 4018 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4019 4020 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4021 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4022 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4023 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4024 newLp.addRoute(route); 4025 } 4026 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4027 newLp.addDnsServer(dns); 4028 } 4029 4030 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4031 synchronized (mDhcpResultsLock) { 4032 // Even when we're using static configuration, we don't need to look at the config 4033 // store, because static IP configuration also populates mDhcpResults. 4034 if ((mDhcpResults != null)) { 4035 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4036 newLp.addRoute(route); 4037 } 4038 for (InetAddress dns : mDhcpResults.dnsServers) { 4039 newLp.addDnsServer(dns); 4040 } 4041 newLp.setDomains(mDhcpResults.domains); 4042 } 4043 } 4044 4045 final boolean linkChanged = !newLp.equals(mLinkProperties); 4046 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4047 final boolean isProvisioned = isProvisioned(newLp); 4048 final boolean lostIPv4Provisioning = 4049 mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address(); 4050 final DetailedState detailedState = getNetworkDetailedState(); 4051 4052 if (linkChanged) { 4053 if (DBG) { 4054 log("Link configuration changed for netId: " + mLastNetworkId 4055 + " old: " + mLinkProperties + " new: " + newLp); 4056 } 4057 mLinkProperties = newLp; 4058 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 4059 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 4060 } 4061 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4062 } 4063 4064 if (DBG) { 4065 StringBuilder sb = new StringBuilder(); 4066 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4067 sb.append(" state: " + detailedState); 4068 sb.append(" reason: " + smToString(reason)); 4069 4070 if (mLinkProperties != null) { 4071 if (mLinkProperties.hasIPv4Address()) { 4072 sb.append(" v4"); 4073 } 4074 if (mLinkProperties.hasGlobalIPv6Address()) { 4075 sb.append(" v6"); 4076 } 4077 if (mLinkProperties.hasIPv4DefaultRoute()) { 4078 sb.append(" v4r"); 4079 } 4080 if (mLinkProperties.hasIPv6DefaultRoute()) { 4081 sb.append(" v6r"); 4082 } 4083 if (mLinkProperties.hasIPv4DnsServer()) { 4084 sb.append(" v4dns"); 4085 } 4086 if (mLinkProperties.hasIPv6DnsServer()) { 4087 sb.append(" v6dns"); 4088 } 4089 if (isProvisioned) { 4090 sb.append(" isprov"); 4091 } 4092 } 4093 loge(sb.toString()); 4094 } 4095 4096 // If we just configured or lost IP configuration, do the needful. 4097 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4098 // here because those should only be called if we're attempting to connect or already 4099 // connected, whereas updateLinkProperties can be called at any time. 4100 switch (reason) { 4101 case DhcpStateMachine.DHCP_SUCCESS: 4102 case CMD_STATIC_IP_SUCCESS: 4103 // IPv4 provisioning succeded. Advance to connected state. 4104 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4105 if (!isProvisioned) { 4106 // Can never happen unless DHCP reports success but isProvisioned thinks the 4107 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4108 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4109 // TODO: disconnect here instead. If our configuration is not usable, there's no 4110 // point in staying connected, and if mLinkProperties is out of sync with 4111 // reality, that will cause problems in the future. 4112 loge("IPv4 config succeeded, but not provisioned"); 4113 } 4114 break; 4115 4116 case DhcpStateMachine.DHCP_FAILURE: 4117 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4118 // give up and disconnect. 4119 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4120 if (!isProvisioned || lostIPv4Provisioning) { 4121 sendMessage(CMD_IP_CONFIGURATION_LOST); 4122 } else { 4123 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4124 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4125 4126 // To be sure we don't get stuck with a non-working network if all we had is 4127 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4128 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4129 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4130 // necessary for provisioning, its deletion will cause us to disconnect. 4131 // 4132 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4133 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4134 // not return true if we're using DHCP and don't have an IPv4 default route. So 4135 // for now it's only here for extra redundancy. However, it will increase 4136 // robustness if we move to getting IPv4 routes from netlink as well. 4137 loge("DHCP failure: provisioned, clearing IPv4 address."); 4138 if (!clearIPv4Address(mInterfaceName)) { 4139 sendMessage(CMD_IP_CONFIGURATION_LOST); 4140 } 4141 } 4142 break; 4143 4144 case CMD_STATIC_IP_FAILURE: 4145 // Static configuration was invalid, or an error occurred in applying it. Give up. 4146 sendMessage(CMD_IP_CONFIGURATION_LOST); 4147 break; 4148 4149 case CMD_UPDATE_LINKPROPERTIES: 4150 // IP addresses, DNS servers, etc. changed. Act accordingly. 4151 if (wasProvisioned && !isProvisioned) { 4152 // We no longer have a usable network configuration. Disconnect. 4153 sendMessage(CMD_IP_CONFIGURATION_LOST); 4154 } else if (!wasProvisioned && isProvisioned) { 4155 // We have a usable IPv6-only config. Advance to connected state. 4156 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4157 } 4158 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4159 // If anything has changed and we're already connected, send out a notification. 4160 sendLinkConfigurationChangedBroadcast(); 4161 } 4162 break; 4163 } 4164 } 4165 4166 /** 4167 * Clears all our link properties. 4168 */ 4169 private void clearLinkProperties() { 4170 // Clear the link properties obtained from DHCP and netlink. 4171 synchronized (mDhcpResultsLock) { 4172 if (mDhcpResults != null) { 4173 mDhcpResults.clear(); 4174 } 4175 } 4176 mNetlinkTracker.clearLinkProperties(); 4177 4178 // Now clear the merged link properties. 4179 mLinkProperties.clear(); 4180 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4181 } 4182 4183 /** 4184 * try to update default route MAC address. 4185 */ 4186 private String updateDefaultRouteMacAddress(int timeout) { 4187 String address = null; 4188 for (RouteInfo route : mLinkProperties.getRoutes()) { 4189 if (route.isDefaultRoute() && route.hasGateway()) { 4190 InetAddress gateway = route.getGateway(); 4191 if (gateway instanceof Inet4Address) { 4192 if (PDBG) { 4193 loge("updateDefaultRouteMacAddress found Ipv4 default :" 4194 + gateway.getHostAddress()); 4195 } 4196 address = macAddressFromRoute(gateway.getHostAddress()); 4197 /* The gateway's MAC address is known */ 4198 if ((address == null) && (timeout > 0)) { 4199 boolean reachable = false; 4200 try { 4201 reachable = gateway.isReachable(timeout); 4202 } catch (Exception e) { 4203 loge("updateDefaultRouteMacAddress exception reaching :" 4204 + gateway.getHostAddress()); 4205 4206 } finally { 4207 if (reachable == true) { 4208 4209 address = macAddressFromRoute(gateway.getHostAddress()); 4210 if (PDBG) { 4211 loge("updateDefaultRouteMacAddress reachable (tried again) :" 4212 + gateway.getHostAddress() + " found " + address); 4213 } 4214 } 4215 } 4216 } 4217 if (address != null) { 4218 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4219 } 4220 } 4221 } 4222 } 4223 return address; 4224 } 4225 4226 private void sendScanResultsAvailableBroadcast() { 4227 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4228 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4229 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4230 } 4231 4232 private void sendRssiChangeBroadcast(final int newRssi) { 4233 try { 4234 mBatteryStats.noteWifiRssiChanged(newRssi); 4235 } catch (RemoteException e) { 4236 // Won't happen. 4237 } 4238 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4239 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4240 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4241 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4242 } 4243 4244 private void sendNetworkStateChangeBroadcast(String bssid) { 4245 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4246 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4247 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4248 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties (mLinkProperties)); 4249 if (bssid != null) 4250 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4251 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4252 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4253 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, new WifiInfo(mWifiInfo)); 4254 } 4255 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4256 } 4257 4258 private void sendLinkConfigurationChangedBroadcast() { 4259 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4260 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4261 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4262 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4263 } 4264 4265 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4266 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4267 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4268 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4269 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4270 } 4271 4272 /** 4273 * Record the detailed state of a network. 4274 * @param state the new {@code DetailedState} 4275 */ 4276 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4277 boolean hidden = false; 4278 4279 if (linkDebouncing || isRoaming()) { 4280 // There is generally a confusion in the system about colluding 4281 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4282 // which leads to multiple confusion. 4283 // 4284 // If link is de-bouncing or roaming, we already have an IP address 4285 // as well we were connected and are doing L2 cycles of 4286 // reconnecting or renewing IP address to check that we still have it 4287 // This L2 link flapping should ne be reflected into the Network state 4288 // which is the state of the WiFi Network visible to Layer 3 and applications 4289 // Note that once debouncing and roaming are completed, we will 4290 // set the Network state to where it should be, or leave it as unchanged 4291 // 4292 hidden = true; 4293 } 4294 if (DBG) { 4295 log("setDetailed state, old =" 4296 + mNetworkInfo.getDetailedState() + " and new state=" + state 4297 + " hidden=" + hidden); 4298 } 4299 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4300 // Always indicate that SSID has changed 4301 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4302 if (DBG) { 4303 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4304 } 4305 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4306 sendNetworkStateChangeBroadcast(null); 4307 } 4308 } 4309 if (hidden == true) { 4310 return false; 4311 } 4312 4313 if (state != mNetworkInfo.getDetailedState()) { 4314 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4315 if (mNetworkAgent != null) { 4316 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4317 } 4318 sendNetworkStateChangeBroadcast(null); 4319 return true; 4320 } 4321 return false; 4322 } 4323 4324 private DetailedState getNetworkDetailedState() { 4325 return mNetworkInfo.getDetailedState(); 4326 } 4327 4328 4329 private SupplicantState handleSupplicantStateChange(Message message) { 4330 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4331 SupplicantState state = stateChangeResult.state; 4332 // Supplicant state change 4333 // [31-13] Reserved for future use 4334 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4335 // 50023 supplicant_state_changed (custom|1|5) 4336 mWifiInfo.setSupplicantState(state); 4337 // Network id is only valid when we start connecting 4338 if (SupplicantState.isConnecting(state)) { 4339 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4340 } else { 4341 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4342 } 4343 4344 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4345 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4346 4347 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4348 4349 return state; 4350 } 4351 4352 /** 4353 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4354 * using the interface, stopping DHCP & disabling interface 4355 */ 4356 private void handleNetworkDisconnect() { 4357 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4358 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4359 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 4360 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 4361 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 4362 4363 4364 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4365 4366 stopDhcp(); 4367 4368 try { 4369 mNwService.clearInterfaceAddresses(mInterfaceName); 4370 mNwService.disableIpv6(mInterfaceName); 4371 } catch (Exception e) { 4372 loge("Failed to clear addresses or disable ipv6" + e); 4373 } 4374 4375 /* Reset data structures */ 4376 mBadLinkspeedcount = 0; 4377 mWifiInfo.reset(); 4378 linkDebouncing = false; 4379 /* Reset roaming parameters */ 4380 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4381 4382 /** 4383 * fullBandConnectedTimeIntervalMilli: 4384 * - start scans at mWifiConfigStore.associatedPartialScanPeriodMilli seconds interval 4385 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4386 * Initialize to sane value = 20 seconds 4387 */ 4388 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4389 4390 setNetworkDetailedState(DetailedState.DISCONNECTED); 4391 if (mNetworkAgent != null) { 4392 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4393 mNetworkAgent = null; 4394 } 4395 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4396 4397 /* Clear network properties */ 4398 clearLinkProperties(); 4399 4400 /* Cend event to CM & network change broadcast */ 4401 sendNetworkStateChangeBroadcast(mLastBssid); 4402 4403 /* Cancel auto roam requests */ 4404 autoRoamSetBSSID(mLastNetworkId, "any"); 4405 4406 mLastBssid= null; 4407 registerDisconnected(); 4408 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4409 } 4410 4411 private void handleSupplicantConnectionLoss() { 4412 /* Socket connection can be lost when we do a graceful shutdown 4413 * or when the driver is hung. Ensure supplicant is stopped here. 4414 */ 4415 mWifiMonitor.killSupplicant(mP2pSupported); 4416 mWifiNative.closeSupplicantConnection(); 4417 sendSupplicantConnectionChangedBroadcast(false); 4418 setWifiState(WIFI_STATE_DISABLED); 4419 } 4420 4421 void handlePreDhcpSetup() { 4422 mDhcpActive = true; 4423 if (!mBluetoothConnectionActive) { 4424 /* 4425 * There are problems setting the Wi-Fi driver's power 4426 * mode to active when bluetooth coexistence mode is 4427 * enabled or sense. 4428 * <p> 4429 * We set Wi-Fi to active mode when 4430 * obtaining an IP address because we've found 4431 * compatibility issues with some routers with low power 4432 * mode. 4433 * <p> 4434 * In order for this active power mode to properly be set, 4435 * we disable coexistence mode until we're done with 4436 * obtaining an IP address. One exception is if we 4437 * are currently connected to a headset, since disabling 4438 * coexistence would interrupt that connection. 4439 */ 4440 // Disable the coexistence mode 4441 mWifiNative.setBluetoothCoexistenceMode( 4442 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4443 } 4444 4445 // Disable power save and suspend optimizations during DHCP 4446 // Note: The order here is important for now. Brcm driver changes 4447 // power settings when we control suspend mode optimizations. 4448 // TODO: Remove this comment when the driver is fixed. 4449 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4450 mWifiNative.setPowerSave(false); 4451 4452 // stopBatchedScan(); 4453 WifiNative.pauseScan(); 4454 4455 // Update link layer stats 4456 getWifiLinkLayerStats(false); 4457 4458 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4459 Message msg = new Message(); 4460 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4461 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4462 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4463 msg.obj = mDhcpStateMachine; 4464 mWifiP2pChannel.sendMessage(msg); 4465 } 4466 4467 4468 private boolean useLegacyDhcpClient() { 4469 return Settings.Global.getInt( 4470 mContext.getContentResolver(), 4471 Settings.Global.LEGACY_DHCP_CLIENT, 0) == 1; 4472 } 4473 4474 private void maybeInitDhcpStateMachine() { 4475 if (mDhcpStateMachine == null) { 4476 if (useLegacyDhcpClient()) { 4477 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4478 mContext, WifiStateMachine.this, mInterfaceName); 4479 } else { 4480 mDhcpStateMachine = DhcpClient.makeDhcpStateMachine( 4481 mContext, WifiStateMachine.this, mInterfaceName); 4482 } 4483 } 4484 } 4485 4486 void startDhcp() { 4487 maybeInitDhcpStateMachine(); 4488 mDhcpStateMachine.registerForPreDhcpNotification(); 4489 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4490 } 4491 4492 void renewDhcp() { 4493 maybeInitDhcpStateMachine(); 4494 mDhcpStateMachine.registerForPreDhcpNotification(); 4495 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4496 } 4497 4498 void stopDhcp() { 4499 if (mDhcpStateMachine != null) { 4500 /* In case we were in middle of DHCP operation restore back powermode */ 4501 handlePostDhcpSetup(); 4502 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4503 } 4504 } 4505 4506 void handlePostDhcpSetup() { 4507 /* Restore power save and suspend optimizations */ 4508 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4509 mWifiNative.setPowerSave(true); 4510 4511 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 4512 4513 // Set the coexistence mode back to its default value 4514 mWifiNative.setBluetoothCoexistenceMode( 4515 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4516 4517 mDhcpActive = false; 4518 4519 // startBatchedScan(); 4520 WifiNative.restartScan(); 4521 } 4522 4523 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 4524 4525 if (PDBG) { 4526 loge("wifistatemachine handleIPv4Success <" + dhcpResults.toString() + ">"); 4527 loge("link address " + dhcpResults.ipAddress); 4528 } 4529 4530 synchronized (mDhcpResultsLock) { 4531 mDhcpResults = dhcpResults; 4532 } 4533 4534 Inet4Address addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 4535 if (isRoaming()) { 4536 if (addr instanceof Inet4Address) { 4537 int previousAddress = mWifiInfo.getIpAddress(); 4538 int newAddress = NetworkUtils.inetAddressToInt(addr); 4539 if (previousAddress != newAddress) { 4540 loge("handleIPv4Success, roaming and address changed" + 4541 mWifiInfo + " got: " + addr); 4542 } else { 4543 4544 } 4545 } else { 4546 loge("handleIPv4Success, roaming and didnt get an IPv4 address" + 4547 addr.toString()); 4548 } 4549 } 4550 mWifiInfo.setInetAddress(addr); 4551 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 4552 updateLinkProperties(reason); 4553 } 4554 4555 private void handleSuccessfulIpConfiguration() { 4556 mLastSignalLevel = -1; // Force update of signal strength 4557 WifiConfiguration c = getCurrentWifiConfiguration(); 4558 if (c != null) { 4559 // Reset IP failure tracking 4560 c.numConnectionFailures = 0; 4561 4562 // Tell the framework whether the newly connected network is trusted or untrusted. 4563 updateCapabilities(c); 4564 } 4565 if (c != null) { 4566 ScanResult result = getCurrentScanResult(); 4567 if (result == null) { 4568 loge("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 4569 c.configKey()); 4570 } else { 4571 // Clear the per BSSID failure count 4572 result.numIpConfigFailures = 0; 4573 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 4574 // any BSSID, even though it may already have a non zero ip failure count, 4575 // this will typically happen if the user walks away and come back to his arrea 4576 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 4577 // in supplicant for a couple of hours or a day 4578 mWifiNative.clearBlacklist(); 4579 } 4580 } 4581 } 4582 4583 private void handleIPv4Failure(int reason) { 4584 synchronized(mDhcpResultsLock) { 4585 if (mDhcpResults != null) { 4586 mDhcpResults.clear(); 4587 } 4588 } 4589 if (PDBG) { 4590 loge("wifistatemachine handleIPv4Failure"); 4591 } 4592 updateLinkProperties(reason); 4593 } 4594 4595 private void handleIpConfigurationLost() { 4596 mWifiInfo.setInetAddress(null); 4597 mWifiInfo.setMeteredHint(false); 4598 4599 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 4600 "DHCP FAILURE", mWifiInfo.getBSSID()); 4601 4602 /* DHCP times out after about 30 seconds, we do a 4603 * disconnect thru supplicant, we will let autojoin retry connecting to the network 4604 */ 4605 mWifiNative.disconnect(); 4606 } 4607 4608 private int convertFrequencyToChannelNumber(int frequency) { 4609 if (frequency >= 2412 && frequency <= 2484) { 4610 return (frequency -2412) / 5 + 1; 4611 } else if (frequency >= 5170 && frequency <=5825) { 4612 //DFS is included 4613 return (frequency -5170) / 5 + 34; 4614 } else { 4615 return 0; 4616 } 4617 } 4618 4619 private int chooseApChannel(int apBand) { 4620 int apChannel; 4621 int[] channel; 4622 4623 if (apBand == 0) { 4624 //for 2.4GHz, we only set the AP at channel 1,6,11 4625 apChannel = 5 * mRandom.nextInt(3) + 1; 4626 } else { 4627 //5G without DFS 4628 channel = mWifiNative.getChannelsForBand(2); 4629 if (channel != null && channel.length > 0) { 4630 apChannel = channel[mRandom.nextInt(channel.length)]; 4631 apChannel = convertFrequencyToChannelNumber(apChannel); 4632 } else { 4633 Log.e(TAG, "SoftAp do not get available channel list"); 4634 apChannel = 0; 4635 } 4636 } 4637 4638 if(DBG) { 4639 Log.d(TAG, "SoftAp set on channel " + apChannel); 4640 } 4641 4642 return apChannel; 4643 } 4644 4645 4646 /* Current design is to not set the config on a running hostapd but instead 4647 * stop and start tethering when user changes config on a running access point 4648 * 4649 * TODO: Add control channel setup through hostapd that allows changing config 4650 * on a running daemon 4651 */ 4652 private void startSoftApWithConfig(final WifiConfiguration configuration) { 4653 // set channel 4654 final WifiConfiguration config = new WifiConfiguration(configuration); 4655 4656 if (DBG) { 4657 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 4658 } 4659 //set country code through HAL Here 4660 if (mSetCountryCode != null) { 4661 if(!mWifiNative.setCountryCodeHal(mSetCountryCode.toUpperCase(Locale.ROOT))) { 4662 if (config.apBand != 0) { 4663 Log.e(TAG, "Fail to set country code. Can not setup Softap on 5GHz"); 4664 //countrycode is mandatory for 5GHz 4665 sendMessage(CMD_START_AP_FAILURE); 4666 return; 4667 } 4668 } 4669 } else { 4670 if (config.apBand != 0) { 4671 //countrycode is mandatory for 5GHz 4672 Log.e(TAG, "Can not setup softAp on 5GHz without country code!"); 4673 sendMessage(CMD_START_AP_FAILURE); 4674 return; 4675 } 4676 } 4677 4678 if (config.apChannel == 0) { 4679 config.apChannel = chooseApChannel(config.apBand); 4680 if (config.apChannel == 0) { 4681 //fail to get available channel 4682 sendMessage(CMD_START_AP_FAILURE); 4683 return; 4684 } 4685 } 4686 //turn off interface 4687 if (!mWifiNative.toggleInterface(0)) { 4688 sendMessage(CMD_START_AP_FAILURE); 4689 return; 4690 } 4691 // Start hostapd on a separate thread 4692 new Thread(new Runnable() { 4693 public void run() { 4694 try { 4695 mNwService.startAccessPoint(config, mInterfaceName); 4696 } catch (Exception e) { 4697 loge("Exception in softap start " + e); 4698 try { 4699 mNwService.stopAccessPoint(mInterfaceName); 4700 mNwService.startAccessPoint(config, mInterfaceName); 4701 } catch (Exception e1) { 4702 loge("Exception in softap re-start " + e1); 4703 sendMessage(CMD_START_AP_FAILURE); 4704 return; 4705 } 4706 } 4707 if (DBG) log("Soft AP start successful"); 4708 sendMessage(CMD_START_AP_SUCCESS); 4709 } 4710 }).start(); 4711 } 4712 4713 /* 4714 * Read a MAC address in /proc/arp/table, used by WifistateMachine 4715 * so as to record MAC address of default gateway. 4716 **/ 4717 private String macAddressFromRoute(String ipAddress) { 4718 String macAddress = null; 4719 BufferedReader reader = null; 4720 try { 4721 reader = new BufferedReader(new FileReader("/proc/net/arp")); 4722 4723 // Skip over the line bearing colum titles 4724 String line = reader.readLine(); 4725 4726 while ((line = reader.readLine()) != null) { 4727 String[] tokens = line.split("[ ]+"); 4728 if (tokens.length < 6) { 4729 continue; 4730 } 4731 4732 // ARP column format is 4733 // Address HWType HWAddress Flags Mask IFace 4734 String ip = tokens[0]; 4735 String mac = tokens[3]; 4736 4737 if (ipAddress.equals(ip)) { 4738 macAddress = mac; 4739 break; 4740 } 4741 } 4742 4743 if (macAddress == null) { 4744 loge("Did not find remoteAddress {" + ipAddress + "} in " + 4745 "/proc/net/arp"); 4746 } 4747 4748 } catch (FileNotFoundException e) { 4749 loge("Could not open /proc/net/arp to lookup mac address"); 4750 } catch (IOException e) { 4751 loge("Could not read /proc/net/arp to lookup mac address"); 4752 } finally { 4753 try { 4754 if (reader != null) { 4755 reader.close(); 4756 } 4757 } catch (IOException e) { 4758 // Do nothing 4759 } 4760 } 4761 return macAddress; 4762 4763 } 4764 4765 private class WifiNetworkFactory extends NetworkFactory { 4766 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 4767 super(l, c, TAG, f); 4768 } 4769 4770 @Override 4771 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 4772 ++mConnectionRequests; 4773 } 4774 4775 @Override 4776 protected void releaseNetworkFor(NetworkRequest networkRequest) { 4777 --mConnectionRequests; 4778 } 4779 4780 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 4781 pw.println("mConnectionRequests " + mConnectionRequests); 4782 } 4783 4784 } 4785 4786 private class UntrustedWifiNetworkFactory extends NetworkFactory { 4787 private int mUntrustedReqCount; 4788 4789 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 4790 super(l, c, tag, f); 4791 } 4792 4793 @Override 4794 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 4795 if (!networkRequest.networkCapabilities.hasCapability( 4796 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 4797 if (++mUntrustedReqCount == 1) { 4798 mWifiAutoJoinController.setAllowUntrustedConnections(true); 4799 } 4800 } 4801 } 4802 4803 @Override 4804 protected void releaseNetworkFor(NetworkRequest networkRequest) { 4805 if (!networkRequest.networkCapabilities.hasCapability( 4806 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 4807 if (--mUntrustedReqCount == 0) { 4808 mWifiAutoJoinController.setAllowUntrustedConnections(false); 4809 } 4810 } 4811 } 4812 4813 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 4814 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 4815 } 4816 } 4817 4818 void maybeRegisterNetworkFactory() { 4819 if (mNetworkFactory == null) { 4820 checkAndSetConnectivityInstance(); 4821 if (mCm != null) { 4822 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 4823 NETWORKTYPE, mNetworkCapabilitiesFilter); 4824 mNetworkFactory.setScoreFilter(60); 4825 mNetworkFactory.register(); 4826 4827 // We can't filter untrusted network in the capabilities filter because a trusted 4828 // network would still satisfy a request that accepts untrusted ones. 4829 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 4830 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 4831 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 4832 mUntrustedNetworkFactory.register(); 4833 } 4834 } 4835 } 4836 4837 /******************************************************** 4838 * HSM states 4839 *******************************************************/ 4840 4841 class DefaultState extends State { 4842 @Override 4843 public boolean processMessage(Message message) { 4844 logStateAndMessage(message, getClass().getSimpleName()); 4845 4846 switch (message.what) { 4847 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 4848 AsyncChannel ac = (AsyncChannel) message.obj; 4849 if (ac == mWifiP2pChannel) { 4850 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 4851 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 4852 } else { 4853 loge("WifiP2pService connection failure, error=" + message.arg1); 4854 } 4855 } else { 4856 loge("got HALF_CONNECTED for unknown channel"); 4857 } 4858 break; 4859 } 4860 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 4861 AsyncChannel ac = (AsyncChannel) message.obj; 4862 if (ac == mWifiP2pChannel) { 4863 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 4864 //TODO: Re-establish connection to state machine after a delay 4865 // mWifiP2pChannel.connect(mContext, getHandler(), 4866 // mWifiP2pManager.getMessenger()); 4867 } 4868 break; 4869 } 4870 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 4871 mBluetoothConnectionActive = (message.arg1 != 4872 BluetoothAdapter.STATE_DISCONNECTED); 4873 break; 4874 /* Synchronous call returns */ 4875 case CMD_PING_SUPPLICANT: 4876 case CMD_ENABLE_NETWORK: 4877 case CMD_ADD_OR_UPDATE_NETWORK: 4878 case CMD_REMOVE_NETWORK: 4879 case CMD_SAVE_CONFIG: 4880 replyToMessage(message, message.what, FAILURE); 4881 break; 4882 case CMD_GET_CAPABILITY_FREQ: 4883 replyToMessage(message, message.what, null); 4884 break; 4885 case CMD_GET_CONFIGURED_NETWORKS: 4886 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4887 break; 4888 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 4889 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4890 break; 4891 case CMD_ENABLE_RSSI_POLL: 4892 mEnableRssiPolling = (message.arg1 == 1); 4893 break; 4894 case CMD_SET_HIGH_PERF_MODE: 4895 if (message.arg1 == 1) { 4896 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 4897 } else { 4898 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 4899 } 4900 break; 4901 case CMD_BOOT_COMPLETED: 4902 maybeRegisterNetworkFactory(); 4903 break; 4904 case CMD_SET_BATCHED_SCAN: 4905 recordBatchedScanSettings(message.arg1, message.arg2, (Bundle)message.obj); 4906 break; 4907 case CMD_POLL_BATCHED_SCAN: 4908 handleBatchedScanPollRequest(); 4909 break; 4910 case CMD_START_NEXT_BATCHED_SCAN: 4911 startNextBatchedScan(); 4912 break; 4913 case CMD_SCREEN_STATE_CHANGED: 4914 handleScreenStateChanged(message.arg1 != 0, 4915 /* startBackgroundScanIfNeeded = */ false); 4916 break; 4917 /* Discard */ 4918 case CMD_START_SCAN: 4919 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4920 break; 4921 case CMD_START_SUPPLICANT: 4922 case CMD_STOP_SUPPLICANT: 4923 case CMD_STOP_SUPPLICANT_FAILED: 4924 case CMD_START_DRIVER: 4925 case CMD_STOP_DRIVER: 4926 case CMD_DELAYED_STOP_DRIVER: 4927 case CMD_DRIVER_START_TIMED_OUT: 4928 case CMD_START_AP: 4929 case CMD_START_AP_SUCCESS: 4930 case CMD_START_AP_FAILURE: 4931 case CMD_STOP_AP: 4932 case CMD_TETHER_STATE_CHANGE: 4933 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 4934 case CMD_DISCONNECT: 4935 case CMD_RECONNECT: 4936 case CMD_REASSOCIATE: 4937 case CMD_RELOAD_TLS_AND_RECONNECT: 4938 case WifiMonitor.SUP_CONNECTION_EVENT: 4939 case WifiMonitor.SUP_DISCONNECTION_EVENT: 4940 case WifiMonitor.NETWORK_CONNECTION_EVENT: 4941 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 4942 case WifiMonitor.SCAN_RESULTS_EVENT: 4943 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 4944 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 4945 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 4946 case WifiMonitor.WPS_OVERLAP_EVENT: 4947 case CMD_BLACKLIST_NETWORK: 4948 case CMD_CLEAR_BLACKLIST: 4949 case CMD_SET_OPERATIONAL_MODE: 4950 case CMD_SET_COUNTRY_CODE: 4951 case CMD_SET_FREQUENCY_BAND: 4952 case CMD_RSSI_POLL: 4953 case CMD_ENABLE_ALL_NETWORKS: 4954 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 4955 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 4956 /* Handled by WifiApConfigStore */ 4957 case CMD_SET_AP_CONFIG: 4958 case CMD_SET_AP_CONFIG_COMPLETED: 4959 case CMD_REQUEST_AP_CONFIG: 4960 case CMD_RESPONSE_AP_CONFIG: 4961 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 4962 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 4963 case CMD_NO_NETWORKS_PERIODIC_SCAN: 4964 case CMD_DISABLE_P2P_RSP: 4965 case WifiMonitor.SUP_REQUEST_IDENTITY: 4966 case CMD_TEST_NETWORK_DISCONNECT: 4967 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 4968 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 4969 case CMD_TARGET_BSSID: 4970 case CMD_AUTO_CONNECT: 4971 case CMD_AUTO_ROAM: 4972 case CMD_AUTO_SAVE_NETWORK: 4973 case CMD_ASSOCIATED_BSSID: 4974 case CMD_UNWANTED_NETWORK: 4975 case CMD_DISCONNECTING_WATCHDOG_TIMER: 4976 case CMD_ROAM_WATCHDOG_TIMER: 4977 case CMD_DISABLE_EPHEMERAL_NETWORK: 4978 case CMD_GET_MATCHING_CONFIG: 4979 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4980 break; 4981 case DhcpStateMachine.CMD_ON_QUIT: 4982 mDhcpStateMachine = null; 4983 break; 4984 case CMD_SET_SUSPEND_OPT_ENABLED: 4985 if (message.arg1 == 1) { 4986 mSuspendWakeLock.release(); 4987 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 4988 } else { 4989 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 4990 } 4991 break; 4992 case WifiMonitor.DRIVER_HUNG_EVENT: 4993 setSupplicantRunning(false); 4994 setSupplicantRunning(true); 4995 break; 4996 case WifiManager.CONNECT_NETWORK: 4997 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 4998 WifiManager.BUSY); 4999 break; 5000 case WifiManager.FORGET_NETWORK: 5001 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5002 WifiManager.BUSY); 5003 break; 5004 case WifiManager.SAVE_NETWORK: 5005 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5006 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5007 WifiManager.BUSY); 5008 break; 5009 case WifiManager.START_WPS: 5010 replyToMessage(message, WifiManager.WPS_FAILED, 5011 WifiManager.BUSY); 5012 break; 5013 case WifiManager.CANCEL_WPS: 5014 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5015 WifiManager.BUSY); 5016 break; 5017 case WifiManager.DISABLE_NETWORK: 5018 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5019 WifiManager.BUSY); 5020 break; 5021 case WifiManager.RSSI_PKTCNT_FETCH: 5022 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5023 WifiManager.BUSY); 5024 break; 5025 case CMD_GET_SUPPORTED_FEATURES: 5026 if (WifiNative.startHal()) { 5027 int featureSet = WifiNative.getSupportedFeatureSet(); 5028 replyToMessage(message, message.what, featureSet); 5029 } else { 5030 replyToMessage(message, message.what, 0); 5031 } 5032 break; 5033 case CMD_GET_LINK_LAYER_STATS: 5034 // Not supported hence reply with error message 5035 replyToMessage(message, message.what, null); 5036 break; 5037 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5038 NetworkInfo info = (NetworkInfo) message.obj; 5039 mP2pConnected.set(info.isConnected()); 5040 break; 5041 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5042 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5043 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5044 break; 5045 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5046 case CMD_UPDATE_LINKPROPERTIES: 5047 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5048 break; 5049 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5050 case CMD_IP_CONFIGURATION_LOST: 5051 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5052 break; 5053 case CMD_GET_CONNECTION_STATISTICS: 5054 replyToMessage(message, message.what, mWifiConnectionStatistics); 5055 break; 5056 default: 5057 loge("Error! unhandled message" + message); 5058 break; 5059 } 5060 return HANDLED; 5061 } 5062 } 5063 5064 class InitialState extends State { 5065 @Override 5066 public void enter() { 5067 mWifiNative.unloadDriver(); 5068 5069 if (mWifiP2pChannel == null) { 5070 mWifiP2pChannel = new AsyncChannel(); 5071 mWifiP2pChannel.connect(mContext, getHandler(), 5072 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5073 } 5074 5075 if (mWifiApConfigChannel == null) { 5076 mWifiApConfigChannel = new AsyncChannel(); 5077 WifiApConfigStore wifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 5078 mContext, getHandler()); 5079 wifiApConfigStore.loadApConfiguration(); 5080 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5081 wifiApConfigStore.getMessenger()); 5082 } 5083 } 5084 @Override 5085 public boolean processMessage(Message message) { 5086 logStateAndMessage(message, getClass().getSimpleName()); 5087 switch (message.what) { 5088 case CMD_START_SUPPLICANT: 5089 if (mWifiNative.loadDriver()) { 5090 try { 5091 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5092 } catch (Exception e) { 5093 loge("Failed to reload STA firmware " + e); 5094 // Continue 5095 } 5096 5097 try { 5098 // A runtime crash can leave the interface up and 5099 // IP addresses configured, and this affects 5100 // connectivity when supplicant starts up. 5101 // Ensure interface is down and we have no IP 5102 // addresses before a supplicant start. 5103 mNwService.setInterfaceDown(mInterfaceName); 5104 mNwService.clearInterfaceAddresses(mInterfaceName); 5105 5106 // Set privacy extensions 5107 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5108 5109 // IPv6 is enabled only as long as access point is connected since: 5110 // - IPv6 addresses and routes stick around after disconnection 5111 // - kernel is unaware when connected and fails to start IPv6 negotiation 5112 // - kernel can start autoconfiguration when 802.1x is not complete 5113 mNwService.disableIpv6(mInterfaceName); 5114 } catch (RemoteException re) { 5115 loge("Unable to change interface settings: " + re); 5116 } catch (IllegalStateException ie) { 5117 loge("Unable to change interface settings: " + ie); 5118 } 5119 5120 /* Stop a running supplicant after a runtime restart 5121 * Avoids issues with drivers that do not handle interface down 5122 * on a running supplicant properly. 5123 */ 5124 mWifiMonitor.killSupplicant(mP2pSupported); 5125 if(mWifiNative.startSupplicant(mP2pSupported)) { 5126 setWifiState(WIFI_STATE_ENABLING); 5127 if (DBG) log("Supplicant start successful"); 5128 mWifiMonitor.startMonitoring(); 5129 transitionTo(mSupplicantStartingState); 5130 } else { 5131 loge("Failed to start supplicant!"); 5132 } 5133 } else { 5134 loge("Failed to load driver"); 5135 } 5136 break; 5137 case CMD_START_AP: 5138 if (mWifiNative.loadDriver()) { 5139 setWifiApState(WIFI_AP_STATE_ENABLING); 5140 transitionTo(mSoftApStartingState); 5141 } else { 5142 loge("Failed to load driver for softap"); 5143 } 5144 break; 5145 default: 5146 return NOT_HANDLED; 5147 } 5148 return HANDLED; 5149 } 5150 } 5151 5152 class SupplicantStartingState extends State { 5153 private void initializeWpsDetails() { 5154 String detail; 5155 detail = SystemProperties.get("ro.product.name", ""); 5156 if (!mWifiNative.setDeviceName(detail)) { 5157 loge("Failed to set device name " + detail); 5158 } 5159 detail = SystemProperties.get("ro.product.manufacturer", ""); 5160 if (!mWifiNative.setManufacturer(detail)) { 5161 loge("Failed to set manufacturer " + detail); 5162 } 5163 detail = SystemProperties.get("ro.product.model", ""); 5164 if (!mWifiNative.setModelName(detail)) { 5165 loge("Failed to set model name " + detail); 5166 } 5167 detail = SystemProperties.get("ro.product.model", ""); 5168 if (!mWifiNative.setModelNumber(detail)) { 5169 loge("Failed to set model number " + detail); 5170 } 5171 detail = SystemProperties.get("ro.serialno", ""); 5172 if (!mWifiNative.setSerialNumber(detail)) { 5173 loge("Failed to set serial number " + detail); 5174 } 5175 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5176 loge("Failed to set WPS config methods"); 5177 } 5178 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5179 loge("Failed to set primary device type " + mPrimaryDeviceType); 5180 } 5181 } 5182 5183 @Override 5184 public boolean processMessage(Message message) { 5185 logStateAndMessage(message, getClass().getSimpleName()); 5186 5187 switch(message.what) { 5188 case WifiMonitor.SUP_CONNECTION_EVENT: 5189 if (DBG) log("Supplicant connection established"); 5190 setWifiState(WIFI_STATE_ENABLED); 5191 mSupplicantRestartCount = 0; 5192 /* Reset the supplicant state to indicate the supplicant 5193 * state is not known at this time */ 5194 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5195 /* Initialize data structures */ 5196 mLastBssid = null; 5197 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5198 mLastSignalLevel = -1; 5199 5200 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5201 mWifiNative.enableSaveConfig(); 5202 mWifiConfigStore.loadAndEnableAllNetworks(); 5203 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5204 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5205 } 5206 if (mWifiConfigStore.associatedPartialScanPeriodMilli.get() < 0) { 5207 mWifiConfigStore.associatedPartialScanPeriodMilli.set(0); 5208 } 5209 initializeWpsDetails(); 5210 5211 sendSupplicantConnectionChangedBroadcast(true); 5212 transitionTo(mDriverStartedState); 5213 break; 5214 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5215 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5216 loge("Failed to setup control channel, restart supplicant"); 5217 mWifiMonitor.killSupplicant(mP2pSupported); 5218 transitionTo(mInitialState); 5219 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5220 } else { 5221 loge("Failed " + mSupplicantRestartCount + 5222 " times to start supplicant, unload driver"); 5223 mSupplicantRestartCount = 0; 5224 setWifiState(WIFI_STATE_UNKNOWN); 5225 transitionTo(mInitialState); 5226 } 5227 break; 5228 case CMD_START_SUPPLICANT: 5229 case CMD_STOP_SUPPLICANT: 5230 case CMD_START_AP: 5231 case CMD_STOP_AP: 5232 case CMD_START_DRIVER: 5233 case CMD_STOP_DRIVER: 5234 case CMD_SET_OPERATIONAL_MODE: 5235 case CMD_SET_COUNTRY_CODE: 5236 case CMD_SET_FREQUENCY_BAND: 5237 case CMD_START_PACKET_FILTERING: 5238 case CMD_STOP_PACKET_FILTERING: 5239 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5240 deferMessage(message); 5241 break; 5242 default: 5243 return NOT_HANDLED; 5244 } 5245 return HANDLED; 5246 } 5247 } 5248 5249 class SupplicantStartedState extends State { 5250 @Override 5251 public void enter() { 5252 /* Wifi is available as long as we have a connection to supplicant */ 5253 mNetworkInfo.setIsAvailable(true); 5254 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5255 5256 int defaultInterval = mContext.getResources().getInteger( 5257 R.integer.config_wifi_supplicant_scan_interval); 5258 5259 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5260 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5261 defaultInterval); 5262 5263 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5264 mWifiNative.setExternalSim(true); 5265 5266 /* turn on use of DFS channels */ 5267 WifiNative.setDfsFlag(true); 5268 5269 /* set country code */ 5270 setCountryCode(); 5271 5272 setRandomMacOui(); 5273 mWifiNative.enableAutoConnect(false); 5274 } 5275 5276 @Override 5277 public boolean processMessage(Message message) { 5278 logStateAndMessage(message, getClass().getSimpleName()); 5279 5280 switch(message.what) { 5281 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5282 if (mP2pSupported) { 5283 transitionTo(mWaitForP2pDisableState); 5284 } else { 5285 transitionTo(mSupplicantStoppingState); 5286 } 5287 break; 5288 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5289 loge("Connection lost, restart supplicant"); 5290 handleSupplicantConnectionLoss(); 5291 handleNetworkDisconnect(); 5292 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5293 if (mP2pSupported) { 5294 transitionTo(mWaitForP2pDisableState); 5295 } else { 5296 transitionTo(mInitialState); 5297 } 5298 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5299 break; 5300 case WifiMonitor.SCAN_RESULTS_EVENT: 5301 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5302 closeRadioScanStats(); 5303 noteScanEnd(); 5304 setScanResults(); 5305 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5306 /* Just updated results from full scan, let apps know about this */ 5307 sendScanResultsAvailableBroadcast(); 5308 } 5309 mSendScanResultsBroadcast = false; 5310 mIsScanOngoing = false; 5311 mIsFullScanOngoing = false; 5312 if (mBufferedScanMsg.size() > 0) 5313 sendMessage(mBufferedScanMsg.remove()); 5314 break; 5315 case CMD_PING_SUPPLICANT: 5316 boolean ok = mWifiNative.ping(); 5317 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5318 break; 5319 case CMD_GET_CAPABILITY_FREQ: 5320 String freqs = mWifiNative.getFreqCapability(); 5321 replyToMessage(message, message.what, freqs); 5322 break; 5323 case CMD_START_AP: 5324 /* Cannot start soft AP while in client mode */ 5325 loge("Failed to start soft AP with a running supplicant"); 5326 setWifiApState(WIFI_AP_STATE_FAILED); 5327 break; 5328 case CMD_SET_OPERATIONAL_MODE: 5329 mOperationalMode = message.arg1; 5330 mWifiConfigStore. 5331 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5332 break; 5333 case CMD_TARGET_BSSID: 5334 // Trying to associate to this BSSID 5335 if (message.obj != null) { 5336 mTargetRoamBSSID = (String) message.obj; 5337 } 5338 break; 5339 case CMD_GET_LINK_LAYER_STATS: 5340 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5341 if (stats == null) { 5342 // When firmware doesnt support link layer stats, return an empty object 5343 stats = new WifiLinkLayerStats(); 5344 } 5345 replyToMessage(message, message.what, stats); 5346 break; 5347 case CMD_SET_COUNTRY_CODE: 5348 String country = (String) message.obj; 5349 5350 final boolean persist = (message.arg2 == 1); 5351 final int sequence = message.arg1; 5352 5353 if (sequence != mCountryCodeSequence.get()) { 5354 if (DBG) log("set country code ignored due to sequnce num"); 5355 break; 5356 } 5357 if (DBG) log("set country code " + country); 5358 country = country.toUpperCase(Locale.ROOT); 5359 5360 if (mDriverSetCountryCode == null || !mDriverSetCountryCode.equals(country)) { 5361 if (mWifiNative.setCountryCode(country)) { 5362 mDriverSetCountryCode = country; 5363 } else { 5364 loge("Failed to set country code " + country); 5365 } 5366 } 5367 5368 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5369 break; 5370 default: 5371 return NOT_HANDLED; 5372 } 5373 return HANDLED; 5374 } 5375 5376 @Override 5377 public void exit() { 5378 mNetworkInfo.setIsAvailable(false); 5379 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5380 } 5381 } 5382 5383 class SupplicantStoppingState extends State { 5384 @Override 5385 public void enter() { 5386 /* Send any reset commands to supplicant before shutting it down */ 5387 handleNetworkDisconnect(); 5388 if (mDhcpStateMachine != null) { 5389 mDhcpStateMachine.doQuit(); 5390 } 5391 5392 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5393 if (suppState == null) suppState = "unknown"; 5394 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5395 if (p2pSuppState == null) p2pSuppState = "unknown"; 5396 5397 loge("SupplicantStoppingState: stopSupplicant " 5398 + " init.svc.wpa_supplicant=" + suppState 5399 + " init.svc.p2p_supplicant=" + p2pSuppState); 5400 mWifiMonitor.stopSupplicant(); 5401 5402 /* Send ourselves a delayed message to indicate failure after a wait time */ 5403 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5404 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5405 setWifiState(WIFI_STATE_DISABLING); 5406 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5407 } 5408 @Override 5409 public boolean processMessage(Message message) { 5410 logStateAndMessage(message, getClass().getSimpleName()); 5411 5412 switch(message.what) { 5413 case WifiMonitor.SUP_CONNECTION_EVENT: 5414 loge("Supplicant connection received while stopping"); 5415 break; 5416 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5417 if (DBG) log("Supplicant connection lost"); 5418 handleSupplicantConnectionLoss(); 5419 transitionTo(mInitialState); 5420 break; 5421 case CMD_STOP_SUPPLICANT_FAILED: 5422 if (message.arg1 == mSupplicantStopFailureToken) { 5423 loge("Timed out on a supplicant stop, kill and proceed"); 5424 handleSupplicantConnectionLoss(); 5425 transitionTo(mInitialState); 5426 } 5427 break; 5428 case CMD_START_SUPPLICANT: 5429 case CMD_STOP_SUPPLICANT: 5430 case CMD_START_AP: 5431 case CMD_STOP_AP: 5432 case CMD_START_DRIVER: 5433 case CMD_STOP_DRIVER: 5434 case CMD_SET_OPERATIONAL_MODE: 5435 case CMD_SET_COUNTRY_CODE: 5436 case CMD_SET_FREQUENCY_BAND: 5437 case CMD_START_PACKET_FILTERING: 5438 case CMD_STOP_PACKET_FILTERING: 5439 deferMessage(message); 5440 break; 5441 default: 5442 return NOT_HANDLED; 5443 } 5444 return HANDLED; 5445 } 5446 } 5447 5448 class DriverStartingState extends State { 5449 private int mTries; 5450 @Override 5451 public void enter() { 5452 mTries = 1; 5453 /* Send ourselves a delayed message to start driver a second time */ 5454 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5455 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5456 } 5457 @Override 5458 public boolean processMessage(Message message) { 5459 logStateAndMessage(message, getClass().getSimpleName()); 5460 5461 switch(message.what) { 5462 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5463 SupplicantState state = handleSupplicantStateChange(message); 5464 /* If suplicant is exiting out of INTERFACE_DISABLED state into 5465 * a state that indicates driver has started, it is ready to 5466 * receive driver commands 5467 */ 5468 if (SupplicantState.isDriverActive(state)) { 5469 transitionTo(mDriverStartedState); 5470 } 5471 break; 5472 case CMD_DRIVER_START_TIMED_OUT: 5473 if (message.arg1 == mDriverStartToken) { 5474 if (mTries >= 2) { 5475 loge("Failed to start driver after " + mTries); 5476 transitionTo(mDriverStoppedState); 5477 } else { 5478 loge("Driver start failed, retrying"); 5479 mWakeLock.acquire(); 5480 mWifiNative.startDriver(); 5481 mWakeLock.release(); 5482 5483 ++mTries; 5484 /* Send ourselves a delayed message to start driver again */ 5485 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5486 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5487 } 5488 } 5489 break; 5490 /* Queue driver commands & connection events */ 5491 case CMD_START_DRIVER: 5492 case CMD_STOP_DRIVER: 5493 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5494 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5495 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5496 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5497 case WifiMonitor.WPS_OVERLAP_EVENT: 5498 case CMD_SET_COUNTRY_CODE: 5499 case CMD_SET_FREQUENCY_BAND: 5500 case CMD_START_PACKET_FILTERING: 5501 case CMD_STOP_PACKET_FILTERING: 5502 case CMD_START_SCAN: 5503 case CMD_DISCONNECT: 5504 case CMD_REASSOCIATE: 5505 case CMD_RECONNECT: 5506 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5507 deferMessage(message); 5508 break; 5509 case WifiMonitor.SCAN_RESULTS_EVENT: 5510 // Loose scan results obtained in Driver Starting state, they can only confuse 5511 // the state machine 5512 break; 5513 default: 5514 return NOT_HANDLED; 5515 } 5516 return HANDLED; 5517 } 5518 } 5519 5520 class DriverStartedState extends State { 5521 @Override 5522 public void enter() { 5523 5524 if (PDBG) { 5525 loge("DriverStartedState enter"); 5526 } 5527 mIsRunning = true; 5528 mInDelayedStop = false; 5529 mDelayedStopCounter++; 5530 updateBatteryWorkSource(null); 5531 /** 5532 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 5533 * When this mode is on, some of the low-level scan parameters used by the 5534 * driver are changed to reduce interference with bluetooth 5535 */ 5536 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5537 /* set frequency band of operation */ 5538 setFrequencyBand(); 5539 /* initialize network state */ 5540 setNetworkDetailedState(DetailedState.DISCONNECTED); 5541 5542 /* Remove any filtering on Multicast v6 at start */ 5543 mWifiNative.stopFilteringMulticastV6Packets(); 5544 5545 /* Reset Multicast v4 filtering state */ 5546 if (mFilteringMulticastV4Packets.get()) { 5547 mWifiNative.startFilteringMulticastV4Packets(); 5548 } else { 5549 mWifiNative.stopFilteringMulticastV4Packets(); 5550 } 5551 5552 mDhcpActive = false; 5553 5554 startBatchedScan(); 5555 5556 if (mOperationalMode != CONNECT_MODE) { 5557 mWifiNative.disconnect(); 5558 mWifiConfigStore.disableAllNetworks(); 5559 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5560 setWifiState(WIFI_STATE_DISABLED); 5561 } 5562 transitionTo(mScanModeState); 5563 } else { 5564 5565 // Status pulls in the current supplicant state and network connection state 5566 // events over the monitor connection. This helps framework sync up with 5567 // current supplicant state 5568 // TODO: actually check th supplicant status string and make sure the supplicant 5569 // is in disconnecte4d state. 5570 mWifiNative.status(); 5571 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 5572 transitionTo(mDisconnectedState); 5573 } 5574 5575 // We may have missed screen update at boot 5576 if (mScreenBroadcastReceived.get() == false) { 5577 PowerManager powerManager = (PowerManager)mContext.getSystemService( 5578 Context.POWER_SERVICE); 5579 handleScreenStateChanged(powerManager.isScreenOn(), 5580 /* startBackgroundScanIfNeeded = */ false); 5581 } else { 5582 // Set the right suspend mode settings 5583 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 5584 && mUserWantsSuspendOpt.get()); 5585 } 5586 mWifiNative.setPowerSave(true); 5587 5588 if (mP2pSupported) { 5589 if (mOperationalMode == CONNECT_MODE) { 5590 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 5591 } else { 5592 // P2P statemachine starts in disabled state, and is not enabled until 5593 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 5594 // keep it disabled. 5595 } 5596 } 5597 5598 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5599 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5600 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 5601 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5602 5603 if (PDBG) { 5604 loge("Driverstarted State enter done"); 5605 } 5606 } 5607 5608 @Override 5609 public boolean processMessage(Message message) { 5610 logStateAndMessage(message, getClass().getSimpleName()); 5611 5612 switch(message.what) { 5613 case CMD_START_SCAN: 5614 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5615 break; 5616 case CMD_SET_BATCHED_SCAN: 5617 if (recordBatchedScanSettings(message.arg1, message.arg2, 5618 (Bundle) message.obj)) { 5619 if (mBatchedScanSettings != null) { 5620 startBatchedScan(); 5621 } else { 5622 stopBatchedScan(); 5623 } 5624 } 5625 break; 5626 case CMD_SET_FREQUENCY_BAND: 5627 int band = message.arg1; 5628 if (DBG) log("set frequency band " + band); 5629 if (mWifiNative.setBand(band)) { 5630 5631 if (PDBG) loge("did set frequency band " + band); 5632 5633 mFrequencyBand.set(band); 5634 // Flush old data - like scan results 5635 mWifiNative.bssFlush(); 5636 // Fetch the latest scan results when frequency band is set 5637 startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 5638 5639 if (PDBG) loge("done set frequency band " + band); 5640 5641 } else { 5642 loge("Failed to set frequency band " + band); 5643 } 5644 break; 5645 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5646 mBluetoothConnectionActive = (message.arg1 != 5647 BluetoothAdapter.STATE_DISCONNECTED); 5648 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5649 break; 5650 case CMD_STOP_DRIVER: 5651 int mode = message.arg1; 5652 5653 /* Already doing a delayed stop */ 5654 if (mInDelayedStop) { 5655 if (DBG) log("Already in delayed stop"); 5656 break; 5657 } 5658 /* disconnect right now, but leave the driver running for a bit */ 5659 mWifiConfigStore.disableAllNetworks(); 5660 5661 mInDelayedStop = true; 5662 mDelayedStopCounter++; 5663 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 5664 5665 /* send regular delayed shut down */ 5666 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 5667 driverStopIntent.setPackage(this.getClass().getPackage().getName()); 5668 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 5669 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 5670 DRIVER_STOP_REQUEST, driverStopIntent, 5671 PendingIntent.FLAG_UPDATE_CURRENT); 5672 5673 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 5674 + mDriverStopDelayMs, mDriverStopIntent); 5675 break; 5676 case CMD_START_DRIVER: 5677 if (mInDelayedStop) { 5678 mInDelayedStop = false; 5679 mDelayedStopCounter++; 5680 mAlarmManager.cancel(mDriverStopIntent); 5681 if (DBG) log("Delayed stop ignored due to start"); 5682 if (mOperationalMode == CONNECT_MODE) { 5683 mWifiConfigStore.enableAllNetworks(); 5684 } 5685 } 5686 break; 5687 case CMD_DELAYED_STOP_DRIVER: 5688 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 5689 if (message.arg1 != mDelayedStopCounter) break; 5690 if (getCurrentState() != mDisconnectedState) { 5691 mWifiNative.disconnect(); 5692 handleNetworkDisconnect(); 5693 } 5694 mWakeLock.acquire(); 5695 mWifiNative.stopDriver(); 5696 mWakeLock.release(); 5697 if (mP2pSupported) { 5698 transitionTo(mWaitForP2pDisableState); 5699 } else { 5700 transitionTo(mDriverStoppingState); 5701 } 5702 break; 5703 case CMD_START_PACKET_FILTERING: 5704 if (message.arg1 == MULTICAST_V6) { 5705 mWifiNative.startFilteringMulticastV6Packets(); 5706 } else if (message.arg1 == MULTICAST_V4) { 5707 mWifiNative.startFilteringMulticastV4Packets(); 5708 } else { 5709 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 5710 } 5711 break; 5712 case CMD_STOP_PACKET_FILTERING: 5713 if (message.arg1 == MULTICAST_V6) { 5714 mWifiNative.stopFilteringMulticastV6Packets(); 5715 } else if (message.arg1 == MULTICAST_V4) { 5716 mWifiNative.stopFilteringMulticastV4Packets(); 5717 } else { 5718 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 5719 } 5720 break; 5721 case CMD_SET_SUSPEND_OPT_ENABLED: 5722 if (message.arg1 == 1) { 5723 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 5724 mSuspendWakeLock.release(); 5725 } else { 5726 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 5727 } 5728 break; 5729 case CMD_SET_HIGH_PERF_MODE: 5730 if (message.arg1 == 1) { 5731 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 5732 } else { 5733 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 5734 } 5735 break; 5736 case CMD_ENABLE_TDLS: 5737 if (message.obj != null) { 5738 String remoteAddress = (String) message.obj; 5739 boolean enable = (message.arg1 == 1); 5740 mWifiNative.startTdls(remoteAddress, enable); 5741 } 5742 break; 5743 default: 5744 return NOT_HANDLED; 5745 } 5746 return HANDLED; 5747 } 5748 @Override 5749 public void exit() { 5750 mIsRunning = false; 5751 updateBatteryWorkSource(null); 5752 mScanResults = new ArrayList<>(); 5753 5754 stopBatchedScan(); 5755 5756 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5757 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5758 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 5759 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5760 noteScanEnd(); // wrap up any pending request. 5761 mBufferedScanMsg.clear(); 5762 } 5763 } 5764 5765 class WaitForP2pDisableState extends State { 5766 private State mTransitionToState; 5767 @Override 5768 public void enter() { 5769 switch (getCurrentMessage().what) { 5770 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5771 mTransitionToState = mInitialState; 5772 break; 5773 case CMD_DELAYED_STOP_DRIVER: 5774 mTransitionToState = mDriverStoppingState; 5775 break; 5776 case CMD_STOP_SUPPLICANT: 5777 mTransitionToState = mSupplicantStoppingState; 5778 break; 5779 default: 5780 mTransitionToState = mDriverStoppingState; 5781 break; 5782 } 5783 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 5784 } 5785 @Override 5786 public boolean processMessage(Message message) { 5787 logStateAndMessage(message, getClass().getSimpleName()); 5788 5789 switch(message.what) { 5790 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 5791 transitionTo(mTransitionToState); 5792 break; 5793 /* Defer wifi start/shut and driver commands */ 5794 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5795 case CMD_START_SUPPLICANT: 5796 case CMD_STOP_SUPPLICANT: 5797 case CMD_START_AP: 5798 case CMD_STOP_AP: 5799 case CMD_START_DRIVER: 5800 case CMD_STOP_DRIVER: 5801 case CMD_SET_OPERATIONAL_MODE: 5802 case CMD_SET_COUNTRY_CODE: 5803 case CMD_SET_FREQUENCY_BAND: 5804 case CMD_START_PACKET_FILTERING: 5805 case CMD_STOP_PACKET_FILTERING: 5806 case CMD_START_SCAN: 5807 case CMD_DISCONNECT: 5808 case CMD_REASSOCIATE: 5809 case CMD_RECONNECT: 5810 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5811 deferMessage(message); 5812 break; 5813 default: 5814 return NOT_HANDLED; 5815 } 5816 return HANDLED; 5817 } 5818 } 5819 5820 class DriverStoppingState extends State { 5821 @Override 5822 public boolean processMessage(Message message) { 5823 logStateAndMessage(message, getClass().getSimpleName()); 5824 5825 switch(message.what) { 5826 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5827 SupplicantState state = handleSupplicantStateChange(message); 5828 if (state == SupplicantState.INTERFACE_DISABLED) { 5829 transitionTo(mDriverStoppedState); 5830 } 5831 break; 5832 /* Queue driver commands */ 5833 case CMD_START_DRIVER: 5834 case CMD_STOP_DRIVER: 5835 case CMD_SET_COUNTRY_CODE: 5836 case CMD_SET_FREQUENCY_BAND: 5837 case CMD_START_PACKET_FILTERING: 5838 case CMD_STOP_PACKET_FILTERING: 5839 case CMD_START_SCAN: 5840 case CMD_DISCONNECT: 5841 case CMD_REASSOCIATE: 5842 case CMD_RECONNECT: 5843 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5844 deferMessage(message); 5845 break; 5846 default: 5847 return NOT_HANDLED; 5848 } 5849 return HANDLED; 5850 } 5851 } 5852 5853 class DriverStoppedState extends State { 5854 @Override 5855 public boolean processMessage(Message message) { 5856 logStateAndMessage(message, getClass().getSimpleName()); 5857 switch (message.what) { 5858 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5859 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 5860 SupplicantState state = stateChangeResult.state; 5861 // A WEXT bug means that we can be back to driver started state 5862 // unexpectedly 5863 if (SupplicantState.isDriverActive(state)) { 5864 transitionTo(mDriverStartedState); 5865 } 5866 break; 5867 case CMD_START_DRIVER: 5868 mWakeLock.acquire(); 5869 mWifiNative.startDriver(); 5870 mWakeLock.release(); 5871 transitionTo(mDriverStartingState); 5872 break; 5873 default: 5874 return NOT_HANDLED; 5875 } 5876 return HANDLED; 5877 } 5878 } 5879 5880 class ScanModeState extends State { 5881 private int mLastOperationMode; 5882 @Override 5883 public void enter() { 5884 mLastOperationMode = mOperationalMode; 5885 } 5886 @Override 5887 public boolean processMessage(Message message) { 5888 logStateAndMessage(message, getClass().getSimpleName()); 5889 5890 switch(message.what) { 5891 case CMD_SET_OPERATIONAL_MODE: 5892 if (message.arg1 == CONNECT_MODE) { 5893 5894 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5895 setWifiState(WIFI_STATE_ENABLED); 5896 // Load and re-enable networks when going back to enabled state 5897 // This is essential for networks to show up after restore 5898 mWifiConfigStore.loadAndEnableAllNetworks(); 5899 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 5900 } else { 5901 mWifiConfigStore.enableAllNetworks(); 5902 } 5903 5904 // Try autojoining with recent network already present in the cache 5905 // If none are found then trigger a scan which will trigger autojoin 5906 // upon reception of scan results event 5907 if (!mWifiAutoJoinController.attemptAutoJoin()) { 5908 startScan(ENABLE_WIFI, 0, null, null); 5909 } 5910 5911 // Loose last selection choice since user toggled WiFi 5912 mWifiConfigStore. 5913 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5914 5915 mOperationalMode = CONNECT_MODE; 5916 transitionTo(mDisconnectedState); 5917 } else { 5918 // Nothing to do 5919 return HANDLED; 5920 } 5921 break; 5922 // Handle scan. All the connection related commands are 5923 // handled only in ConnectModeState 5924 case CMD_START_SCAN: 5925 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5926 break; 5927 default: 5928 return NOT_HANDLED; 5929 } 5930 return HANDLED; 5931 } 5932 } 5933 5934 5935 String smToString(Message message) { 5936 return smToString(message.what); 5937 } 5938 5939 String smToString(int what) { 5940 String s = "unknown"; 5941 switch (what) { 5942 case WifiMonitor.DRIVER_HUNG_EVENT: 5943 s = "DRIVER_HUNG_EVENT"; 5944 break; 5945 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 5946 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 5947 break; 5948 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 5949 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 5950 break; 5951 case CMD_SET_FREQUENCY_BAND: 5952 s = "CMD_SET_FREQUENCY_BAND"; 5953 break; 5954 case CMD_DELAYED_NETWORK_DISCONNECT: 5955 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 5956 break; 5957 case CMD_TEST_NETWORK_DISCONNECT: 5958 s = "CMD_TEST_NETWORK_DISCONNECT"; 5959 break; 5960 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5961 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 5962 break; 5963 case CMD_DISABLE_EPHEMERAL_NETWORK: 5964 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 5965 break; 5966 case CMD_START_DRIVER: 5967 s = "CMD_START_DRIVER"; 5968 break; 5969 case CMD_STOP_DRIVER: 5970 s = "CMD_STOP_DRIVER"; 5971 break; 5972 case CMD_STOP_SUPPLICANT: 5973 s = "CMD_STOP_SUPPLICANT"; 5974 break; 5975 case CMD_STOP_SUPPLICANT_FAILED: 5976 s = "CMD_STOP_SUPPLICANT_FAILED"; 5977 break; 5978 case CMD_START_SUPPLICANT: 5979 s = "CMD_START_SUPPLICANT"; 5980 break; 5981 case CMD_REQUEST_AP_CONFIG: 5982 s = "CMD_REQUEST_AP_CONFIG"; 5983 break; 5984 case CMD_RESPONSE_AP_CONFIG: 5985 s = "CMD_RESPONSE_AP_CONFIG"; 5986 break; 5987 case CMD_TETHER_STATE_CHANGE: 5988 s = "CMD_TETHER_STATE_CHANGE"; 5989 break; 5990 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5991 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 5992 break; 5993 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5994 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 5995 break; 5996 case CMD_ADD_OR_UPDATE_NETWORK: 5997 s = "CMD_ADD_OR_UPDATE_NETWORK"; 5998 break; 5999 case CMD_REMOVE_NETWORK: 6000 s = "CMD_REMOVE_NETWORK"; 6001 break; 6002 case CMD_ENABLE_NETWORK: 6003 s = "CMD_ENABLE_NETWORK"; 6004 break; 6005 case CMD_ENABLE_ALL_NETWORKS: 6006 s = "CMD_ENABLE_ALL_NETWORKS"; 6007 break; 6008 case CMD_AUTO_CONNECT: 6009 s = "CMD_AUTO_CONNECT"; 6010 break; 6011 case CMD_AUTO_ROAM: 6012 s = "CMD_AUTO_ROAM"; 6013 break; 6014 case CMD_AUTO_SAVE_NETWORK: 6015 s = "CMD_AUTO_SAVE_NETWORK"; 6016 break; 6017 case CMD_BOOT_COMPLETED: 6018 s = "CMD_BOOT_COMPLETED"; 6019 break; 6020 case DhcpStateMachine.CMD_START_DHCP: 6021 s = "CMD_START_DHCP"; 6022 break; 6023 case DhcpStateMachine.CMD_STOP_DHCP: 6024 s = "CMD_STOP_DHCP"; 6025 break; 6026 case DhcpStateMachine.CMD_RENEW_DHCP: 6027 s = "CMD_RENEW_DHCP"; 6028 break; 6029 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6030 s = "CMD_PRE_DHCP_ACTION"; 6031 break; 6032 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6033 s = "CMD_POST_DHCP_ACTION"; 6034 break; 6035 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6036 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6037 break; 6038 case DhcpStateMachine.CMD_ON_QUIT: 6039 s = "CMD_ON_QUIT"; 6040 break; 6041 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6042 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6043 break; 6044 case WifiManager.DISABLE_NETWORK: 6045 s = "WifiManager.DISABLE_NETWORK"; 6046 break; 6047 case CMD_BLACKLIST_NETWORK: 6048 s = "CMD_BLACKLIST_NETWORK"; 6049 break; 6050 case CMD_CLEAR_BLACKLIST: 6051 s = "CMD_CLEAR_BLACKLIST"; 6052 break; 6053 case CMD_SAVE_CONFIG: 6054 s = "CMD_SAVE_CONFIG"; 6055 break; 6056 case CMD_GET_CONFIGURED_NETWORKS: 6057 s = "CMD_GET_CONFIGURED_NETWORKS"; 6058 break; 6059 case CMD_GET_SUPPORTED_FEATURES: 6060 s = "CMD_GET_SUPPORTED_FEATURES"; 6061 break; 6062 case CMD_UNWANTED_NETWORK: 6063 s = "CMD_UNWANTED_NETWORK"; 6064 break; 6065 case CMD_NETWORK_STATUS: 6066 s = "CMD_NETWORK_STATUS"; 6067 break; 6068 case CMD_GET_LINK_LAYER_STATS: 6069 s = "CMD_GET_LINK_LAYER_STATS"; 6070 break; 6071 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6072 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6073 break; 6074 case CMD_DISCONNECT: 6075 s = "CMD_DISCONNECT"; 6076 break; 6077 case CMD_RECONNECT: 6078 s = "CMD_RECONNECT"; 6079 break; 6080 case CMD_REASSOCIATE: 6081 s = "CMD_REASSOCIATE"; 6082 break; 6083 case CMD_GET_CONNECTION_STATISTICS: 6084 s = "CMD_GET_CONNECTION_STATISTICS"; 6085 break; 6086 case CMD_SET_HIGH_PERF_MODE: 6087 s = "CMD_SET_HIGH_PERF_MODE"; 6088 break; 6089 case CMD_SET_COUNTRY_CODE: 6090 s = "CMD_SET_COUNTRY_CODE"; 6091 break; 6092 case CMD_ENABLE_RSSI_POLL: 6093 s = "CMD_ENABLE_RSSI_POLL"; 6094 break; 6095 case CMD_RSSI_POLL: 6096 s = "CMD_RSSI_POLL"; 6097 break; 6098 case CMD_START_PACKET_FILTERING: 6099 s = "CMD_START_PACKET_FILTERING"; 6100 break; 6101 case CMD_STOP_PACKET_FILTERING: 6102 s = "CMD_STOP_PACKET_FILTERING"; 6103 break; 6104 case CMD_SET_SUSPEND_OPT_ENABLED: 6105 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6106 break; 6107 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6108 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6109 break; 6110 case CMD_SET_BATCHED_SCAN: 6111 s = "CMD_SET_BATCHED_SCAN"; 6112 break; 6113 case CMD_START_NEXT_BATCHED_SCAN: 6114 s = "CMD_START_NEXT_BATCHED_SCAN"; 6115 break; 6116 case CMD_POLL_BATCHED_SCAN: 6117 s = "CMD_POLL_BATCHED_SCAN"; 6118 break; 6119 case CMD_UPDATE_LINKPROPERTIES: 6120 s = "CMD_UPDATE_LINKPROPERTIES"; 6121 break; 6122 case CMD_RELOAD_TLS_AND_RECONNECT: 6123 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6124 break; 6125 case WifiManager.CONNECT_NETWORK: 6126 s = "CONNECT_NETWORK"; 6127 break; 6128 case WifiManager.SAVE_NETWORK: 6129 s = "SAVE_NETWORK"; 6130 break; 6131 case WifiManager.FORGET_NETWORK: 6132 s = "FORGET_NETWORK"; 6133 break; 6134 case WifiMonitor.SUP_CONNECTION_EVENT: 6135 s = "SUP_CONNECTION_EVENT"; 6136 break; 6137 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6138 s = "SUP_DISCONNECTION_EVENT"; 6139 break; 6140 case WifiMonitor.SCAN_RESULTS_EVENT: 6141 s = "SCAN_RESULTS_EVENT"; 6142 break; 6143 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6144 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6145 break; 6146 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6147 s = "AUTHENTICATION_FAILURE_EVENT"; 6148 break; 6149 case WifiMonitor.SSID_TEMP_DISABLED: 6150 s = "SSID_TEMP_DISABLED"; 6151 break; 6152 case WifiMonitor.SSID_REENABLED: 6153 s = "SSID_REENABLED"; 6154 break; 6155 case WifiMonitor.WPS_SUCCESS_EVENT: 6156 s = "WPS_SUCCESS_EVENT"; 6157 break; 6158 case WifiMonitor.WPS_FAIL_EVENT: 6159 s = "WPS_FAIL_EVENT"; 6160 break; 6161 case WifiMonitor.SUP_REQUEST_IDENTITY: 6162 s = "SUP_REQUEST_IDENTITY"; 6163 break; 6164 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6165 s = "NETWORK_CONNECTION_EVENT"; 6166 break; 6167 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6168 s = "NETWORK_DISCONNECTION_EVENT"; 6169 break; 6170 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6171 s = "ASSOCIATION_REJECTION_EVENT"; 6172 break; 6173 case CMD_SET_OPERATIONAL_MODE: 6174 s = "CMD_SET_OPERATIONAL_MODE"; 6175 break; 6176 case CMD_START_SCAN: 6177 s = "CMD_START_SCAN"; 6178 break; 6179 case CMD_DISABLE_P2P_RSP: 6180 s = "CMD_DISABLE_P2P_RSP"; 6181 break; 6182 case CMD_DISABLE_P2P_REQ: 6183 s = "CMD_DISABLE_P2P_REQ"; 6184 break; 6185 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6186 s = "GOOD_LINK_DETECTED"; 6187 break; 6188 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6189 s = "POOR_LINK_DETECTED"; 6190 break; 6191 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6192 s = "GROUP_CREATING_TIMED_OUT"; 6193 break; 6194 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6195 s = "P2P_CONNECTION_CHANGED"; 6196 break; 6197 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6198 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6199 break; 6200 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6201 s = "P2P.SET_MIRACAST_MODE"; 6202 break; 6203 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6204 s = "P2P.BLOCK_DISCOVERY"; 6205 break; 6206 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6207 s = "P2P.SET_COUNTRY_CODE"; 6208 break; 6209 case WifiManager.CANCEL_WPS: 6210 s = "CANCEL_WPS"; 6211 break; 6212 case WifiManager.CANCEL_WPS_FAILED: 6213 s = "CANCEL_WPS_FAILED"; 6214 break; 6215 case WifiManager.CANCEL_WPS_SUCCEDED: 6216 s = "CANCEL_WPS_SUCCEDED"; 6217 break; 6218 case WifiManager.START_WPS: 6219 s = "START_WPS"; 6220 break; 6221 case WifiManager.START_WPS_SUCCEEDED: 6222 s = "START_WPS_SUCCEEDED"; 6223 break; 6224 case WifiManager.WPS_FAILED: 6225 s = "WPS_FAILED"; 6226 break; 6227 case WifiManager.WPS_COMPLETED: 6228 s = "WPS_COMPLETED"; 6229 break; 6230 case WifiManager.RSSI_PKTCNT_FETCH: 6231 s = "RSSI_PKTCNT_FETCH"; 6232 break; 6233 case CMD_IP_CONFIGURATION_LOST: 6234 s = "CMD_IP_CONFIGURATION_LOST"; 6235 break; 6236 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6237 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6238 break; 6239 case CMD_STATIC_IP_SUCCESS: 6240 s = "CMD_STATIC_IP_SUCCESSFUL"; 6241 break; 6242 case CMD_STATIC_IP_FAILURE: 6243 s = "CMD_STATIC_IP_FAILURE"; 6244 break; 6245 case DhcpStateMachine.DHCP_SUCCESS: 6246 s = "DHCP_SUCCESS"; 6247 break; 6248 case DhcpStateMachine.DHCP_FAILURE: 6249 s = "DHCP_FAILURE"; 6250 break; 6251 case CMD_TARGET_BSSID: 6252 s = "CMD_TARGET_BSSID"; 6253 break; 6254 case CMD_ASSOCIATED_BSSID: 6255 s = "CMD_ASSOCIATED_BSSID"; 6256 break; 6257 case CMD_ROAM_WATCHDOG_TIMER: 6258 s = "CMD_ROAM_WATCHDOG_TIMER"; 6259 break; 6260 case CMD_SCREEN_STATE_CHANGED: 6261 s = "CMD_SCREEN_STATE_CHANGED"; 6262 break; 6263 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6264 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6265 break; 6266 default: 6267 s = "what:" + Integer.toString(what); 6268 break; 6269 } 6270 return s; 6271 } 6272 6273 void registerConnected() { 6274 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6275 long now_ms = System.currentTimeMillis(); 6276 // We are switching away from this configuration, 6277 // hence record the time we were connected last 6278 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6279 if (config != null) { 6280 config.lastConnected = System.currentTimeMillis(); 6281 config.autoJoinBailedDueToLowRssi = false; 6282 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 6283 config.numConnectionFailures = 0; 6284 config.numIpConfigFailures = 0; 6285 config.numAuthFailures = 0; 6286 config.numAssociation++; 6287 } 6288 mBadLinkspeedcount = 0; 6289 } 6290 } 6291 6292 void registerDisconnected() { 6293 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6294 long now_ms = System.currentTimeMillis(); 6295 // We are switching away from this configuration, 6296 // hence record the time we were connected last 6297 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6298 if (config != null) { 6299 config.lastDisconnected = System.currentTimeMillis(); 6300 if (config.ephemeral) { 6301 // Remove ephemeral WifiConfigurations from file 6302 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6303 } 6304 } 6305 } 6306 } 6307 6308 void noteWifiDisabledWhileAssociated() { 6309 // We got disabled by user while we were associated, make note of it 6310 int rssi = mWifiInfo.getRssi(); 6311 WifiConfiguration config = getCurrentWifiConfiguration(); 6312 if (getCurrentState() == mConnectedState 6313 && rssi != WifiInfo.INVALID_RSSI 6314 && config != null) { 6315 boolean is24GHz = mWifiInfo.is24GHz(); 6316 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 6317 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 6318 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 6319 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 6320 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 6321 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 6322 if (isBadRSSI) { 6323 // Take note that we got disabled while RSSI was Bad 6324 config.numUserTriggeredWifiDisableLowRSSI++; 6325 } else if (isLowRSSI) { 6326 // Take note that we got disabled while RSSI was Low 6327 config.numUserTriggeredWifiDisableBadRSSI++; 6328 } else if (!isHighRSSI) { 6329 // Take note that we got disabled while RSSI was Not high 6330 config.numUserTriggeredWifiDisableNotHighRSSI++; 6331 } 6332 } 6333 } 6334 6335 WifiConfiguration getCurrentWifiConfiguration() { 6336 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6337 return null; 6338 } 6339 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6340 } 6341 6342 ScanResult getCurrentScanResult() { 6343 WifiConfiguration config = getCurrentWifiConfiguration(); 6344 if (config == null) { 6345 return null; 6346 } 6347 String BSSID = mWifiInfo.getBSSID(); 6348 if (BSSID == null) { 6349 BSSID = mTargetRoamBSSID; 6350 } 6351 WifiConfigStore.ScanDetailCache scanDetailCache = 6352 mWifiConfigStore.getScanDetailCache(config); 6353 6354 if (scanDetailCache == null) { 6355 return null; 6356 } 6357 6358 return scanDetailCache.get(BSSID); 6359 } 6360 6361 String getCurrentBSSID() { 6362 if (linkDebouncing) { 6363 return null; 6364 } 6365 return mLastBssid; 6366 } 6367 6368 class ConnectModeState extends State { 6369 @Override 6370 public boolean processMessage(Message message) { 6371 WifiConfiguration config; 6372 int netId; 6373 boolean ok; 6374 boolean didDisconnect; 6375 String bssid; 6376 String ssid; 6377 NetworkUpdateResult result; 6378 logStateAndMessage(message, getClass().getSimpleName()); 6379 6380 switch (message.what) { 6381 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6382 didBlackListBSSID = false; 6383 bssid = (String) message.obj; 6384 if (bssid == null || TextUtils.isEmpty(bssid)) { 6385 // If BSSID is null, use the target roam BSSID 6386 bssid = mTargetRoamBSSID; 6387 } 6388 if (bssid != null) { 6389 // If we have a BSSID, tell configStore to black list it 6390 synchronized(mScanResultCache) { 6391 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 6392 (mLastNetworkId, bssid, false); 6393 } 6394 } 6395 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6396 break; 6397 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6398 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6399 break; 6400 case WifiMonitor.SSID_TEMP_DISABLED: 6401 case WifiMonitor.SSID_REENABLED: 6402 String substr = (String) message.obj; 6403 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 6404 "temp-disabled" : "re-enabled"; 6405 loge("ConnectModeState SSID state=" + en + " nid=" 6406 + Integer.toString(message.arg1) + " [" + substr + "]"); 6407 synchronized(mScanResultCache) { 6408 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 6409 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 6410 } 6411 break; 6412 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6413 SupplicantState state = handleSupplicantStateChange(message); 6414 // A driver/firmware hang can now put the interface in a down state. 6415 // We detect the interface going down and recover from it 6416 if (!SupplicantState.isDriverActive(state)) { 6417 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6418 handleNetworkDisconnect(); 6419 } 6420 log("Detected an interface down, restart driver"); 6421 transitionTo(mDriverStoppedState); 6422 sendMessage(CMD_START_DRIVER); 6423 break; 6424 } 6425 6426 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 6427 // when authentication times out after a successful connection, 6428 // we can figure this from the supplicant state. If supplicant 6429 // state is DISCONNECTED, but the mNetworkInfo says we are not 6430 // disconnected, we need to handle a disconnection 6431 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 6432 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6433 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 6434 handleNetworkDisconnect(); 6435 transitionTo(mDisconnectedState); 6436 } 6437 break; 6438 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6439 if (message.arg1 == 1) { 6440 mWifiNative.disconnect(); 6441 mTemporarilyDisconnectWifi = true; 6442 } else { 6443 mWifiNative.reconnect(); 6444 mTemporarilyDisconnectWifi = false; 6445 } 6446 break; 6447 case CMD_ADD_OR_UPDATE_NETWORK: 6448 config = (WifiConfiguration) message.obj; 6449 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 6450 if (res < 0) { 6451 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6452 } else { 6453 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 6454 if (curConfig != null && config != null) { 6455 if (curConfig.priority < config.priority 6456 && config.status == WifiConfiguration.Status.ENABLED) { 6457 // Interpret this as a connect attempt 6458 // Set the last selected configuration so as to allow the system to 6459 // stick the last user choice without persisting the choice 6460 mWifiConfigStore.setLastSelectedConfiguration(res); 6461 6462 // Remember time of last connection attempt 6463 lastConnectAttempt = System.currentTimeMillis(); 6464 6465 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6466 6467 // As a courtesy to the caller, trigger a scan now 6468 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 6469 } 6470 } 6471 } 6472 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 6473 break; 6474 case CMD_REMOVE_NETWORK: 6475 ok = mWifiConfigStore.removeNetwork(message.arg1); 6476 if (!ok) { 6477 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6478 } 6479 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6480 break; 6481 case CMD_ENABLE_NETWORK: 6482 boolean others = message.arg2 == 1; 6483 // Tell autojoin the user did try to select to that network 6484 // However, do NOT persist the choice by bumping the priority of the network 6485 if (others) { 6486 mWifiAutoJoinController. 6487 updateConfigurationHistory(message.arg1, true, false); 6488 // Set the last selected configuration so as to allow the system to 6489 // stick the last user choice without persisting the choice 6490 mWifiConfigStore.setLastSelectedConfiguration(message.arg1); 6491 6492 // Remember time of last connection attempt 6493 lastConnectAttempt = System.currentTimeMillis(); 6494 6495 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6496 } 6497 // Cancel auto roam requests 6498 autoRoamSetBSSID(message.arg1, "any"); 6499 6500 ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1); 6501 if (!ok) { 6502 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6503 } 6504 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6505 break; 6506 case CMD_ENABLE_ALL_NETWORKS: 6507 long time = android.os.SystemClock.elapsedRealtime(); 6508 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 6509 mWifiConfigStore.enableAllNetworks(); 6510 mLastEnableAllNetworksTime = time; 6511 } 6512 break; 6513 case WifiManager.DISABLE_NETWORK: 6514 if (mWifiConfigStore.disableNetwork(message.arg1, 6515 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 6516 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 6517 } else { 6518 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6519 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 6520 WifiManager.ERROR); 6521 } 6522 break; 6523 case CMD_DISABLE_EPHEMERAL_NETWORK: 6524 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 6525 if (config != null) { 6526 if (config.networkId == mLastNetworkId) { 6527 // Disconnect and let autojoin reselect a new network 6528 sendMessage(CMD_DISCONNECT); 6529 } 6530 } 6531 break; 6532 case CMD_BLACKLIST_NETWORK: 6533 mWifiNative.addToBlacklist((String) message.obj); 6534 break; 6535 case CMD_CLEAR_BLACKLIST: 6536 mWifiNative.clearBlacklist(); 6537 break; 6538 case CMD_SAVE_CONFIG: 6539 ok = mWifiConfigStore.saveConfig(); 6540 6541 if (DBG) loge("wifistatemachine did save config " + ok); 6542 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 6543 6544 // Inform the backup manager about a data change 6545 IBackupManager ibm = IBackupManager.Stub.asInterface( 6546 ServiceManager.getService(Context.BACKUP_SERVICE)); 6547 if (ibm != null) { 6548 try { 6549 ibm.dataChanged("com.android.providers.settings"); 6550 } catch (Exception e) { 6551 // Try again later 6552 } 6553 } 6554 break; 6555 case CMD_GET_CONFIGURED_NETWORKS: 6556 replyToMessage(message, message.what, 6557 mWifiConfigStore.getConfiguredNetworks()); 6558 break; 6559 case WifiMonitor.SUP_REQUEST_IDENTITY: 6560 int networkId = message.arg2; 6561 boolean identitySent = false; 6562 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 6563 6564 if (targetWificonfiguration != null 6565 && targetWificonfiguration.enterpriseConfig != null) { 6566 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 6567 } 6568 6569 // For SIM & AKA/AKA' EAP method Only, get identity from ICC 6570 if (targetWificonfiguration != null 6571 && targetWificonfiguration.networkId == networkId 6572 && targetWificonfiguration.allowedKeyManagement 6573 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 6574 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 6575 || eapMethod == WifiEnterpriseConfig.Eap.AKA 6576 || eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)) { 6577 TelephonyManager tm = (TelephonyManager) 6578 mContext.getSystemService(Context.TELEPHONY_SERVICE); 6579 if (tm != null) { 6580 String imsi = tm.getSubscriberId(); 6581 String mccMnc = ""; 6582 6583 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 6584 mccMnc = tm.getSimOperator(); 6585 6586 String identity = buildIdentity(eapMethod, imsi, mccMnc); 6587 6588 if (!identity.isEmpty()) { 6589 mWifiNative.simIdentityResponse(networkId, identity); 6590 identitySent = true; 6591 } 6592 } 6593 } 6594 if (!identitySent) { 6595 // Supplicant lacks credentials to connect to that network, hence black list 6596 ssid = (String) message.obj; 6597 if (targetWificonfiguration != null && ssid != null 6598 && targetWificonfiguration.SSID != null 6599 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 6600 mWifiConfigStore.handleSSIDStateChange( 6601 targetWificonfiguration.networkId, false, 6602 "AUTH_FAILED no identity", null); 6603 } 6604 // Disconnect now, as we don't have any way to fullfill 6605 // the supplicant request. 6606 mWifiConfigStore.setLastSelectedConfiguration( 6607 WifiConfiguration.INVALID_NETWORK_ID); 6608 mWifiNative.disconnect(); 6609 } 6610 break; 6611 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 6612 logd("Received SUP_REQUEST_SIM_AUTH"); 6613 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 6614 if (requestData != null) { 6615 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 6616 handleGsmAuthRequest(requestData); 6617 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA 6618 || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { 6619 handle3GAuthRequest(requestData); 6620 } 6621 } else { 6622 loge("Invalid sim auth request"); 6623 } 6624 break; 6625 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6626 replyToMessage(message, message.what, 6627 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 6628 break; 6629 case CMD_GET_MATCHING_CONFIG: 6630 replyToMessage(message, message.what, 6631 mWifiConfigStore.getMatchingConfig((ScanResult)message.obj)); 6632 break; 6633 /* Do a redundant disconnect without transition */ 6634 case CMD_DISCONNECT: 6635 mWifiConfigStore.setLastSelectedConfiguration 6636 (WifiConfiguration.INVALID_NETWORK_ID); 6637 mWifiNative.disconnect(); 6638 break; 6639 case CMD_RECONNECT: 6640 mWifiAutoJoinController.attemptAutoJoin(); 6641 break; 6642 case CMD_REASSOCIATE: 6643 lastConnectAttempt = System.currentTimeMillis(); 6644 mWifiNative.reassociate(); 6645 break; 6646 case CMD_RELOAD_TLS_AND_RECONNECT: 6647 if (mWifiConfigStore.needsUnlockedKeyStore()) { 6648 logd("Reconnecting to give a chance to un-connected TLS networks"); 6649 mWifiNative.disconnect(); 6650 lastConnectAttempt = System.currentTimeMillis(); 6651 mWifiNative.reconnect(); 6652 } 6653 break; 6654 case CMD_AUTO_ROAM: 6655 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 6656 return HANDLED; 6657 case CMD_AUTO_CONNECT: 6658 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 6659 * associated status to the STATUS command but somehow-someplace still thinks 6660 * it is associated and thus will ignore select/reconnect command with 6661 * following message: 6662 * "Already associated with the selected network - do nothing" 6663 * 6664 * Hence, sends a disconnect to supplicant first. 6665 */ 6666 didDisconnect = false; 6667 if (getCurrentState() != mDisconnectedState) { 6668 /** Supplicant will ignore the reconnect if we are currently associated, 6669 * hence trigger a disconnect 6670 */ 6671 didDisconnect = true; 6672 mWifiNative.disconnect(); 6673 } 6674 6675 /* connect command coming from auto-join */ 6676 config = (WifiConfiguration) message.obj; 6677 netId = message.arg1; 6678 int roam = message.arg2; 6679 loge("CMD_AUTO_CONNECT sup state " 6680 + mSupplicantStateTracker.getSupplicantStateName() 6681 + " my state " + getCurrentState().getName() 6682 + " nid=" + Integer.toString(netId) 6683 + " roam=" + Integer.toString(roam)); 6684 if (config == null) { 6685 loge("AUTO_CONNECT and no config, bail out..."); 6686 break; 6687 } 6688 6689 /* Make sure we cancel any previous roam request */ 6690 autoRoamSetBSSID(netId, config.BSSID); 6691 6692 /* Save the network config */ 6693 loge("CMD_AUTO_CONNECT will save config -> " + config.SSID 6694 + " nid=" + Integer.toString(netId)); 6695 result = mWifiConfigStore.saveNetwork(config, -1); 6696 netId = result.getNetworkId(); 6697 loge("CMD_AUTO_CONNECT did save config -> " 6698 + " nid=" + Integer.toString(netId)); 6699 6700 // Make sure the network is enabled, since supplicant will not reenable it 6701 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6702 6703 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false) && 6704 mWifiNative.reconnect()) { 6705 lastConnectAttempt = System.currentTimeMillis(); 6706 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6707 config = mWifiConfigStore.getWifiConfiguration(netId); 6708 if (config != null 6709 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 6710 // If we autojoined a different config than the user selected one, 6711 // it means we could not see the last user selection, 6712 // or that the last user selection was faulty and ended up blacklisted 6713 // for some reason (in which case the user is notified with an error 6714 // message in the Wifi picker), and thus we managed to auto-join away 6715 // from the selected config. -> in that case we need to forget 6716 // the selection because we don't want to abruptly switch back to it. 6717 // 6718 // Note that the user selection is also forgotten after a period of time 6719 // during which the device has been disconnected. 6720 // The default value is 30 minutes : see the code path at bottom of 6721 // setScanResults() function. 6722 mWifiConfigStore. 6723 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6724 } 6725 mAutoRoaming = roam; 6726 if (isRoaming() || linkDebouncing) { 6727 transitionTo(mRoamingState); 6728 } else if (didDisconnect) { 6729 transitionTo(mDisconnectingState); 6730 } else { 6731 /* Already in disconnected state, nothing to change */ 6732 } 6733 } else { 6734 loge("Failed to connect config: " + config + " netId: " + netId); 6735 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6736 WifiManager.ERROR); 6737 break; 6738 } 6739 break; 6740 case WifiManager.CONNECT_NETWORK: 6741 /** 6742 * The connect message can contain a network id passed as arg1 on message or 6743 * or a config passed as obj on message. 6744 * For a new network, a config is passed to create and connect. 6745 * For an existing network, a network id is passed 6746 */ 6747 netId = message.arg1; 6748 config = (WifiConfiguration) message.obj; 6749 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6750 boolean updatedExisting = false; 6751 6752 /* Save the network config */ 6753 if (config != null) { 6754 String configKey = config.configKey(true /* allowCached */); 6755 WifiConfiguration savedConfig = 6756 mWifiConfigStore.getWifiConfiguration(configKey); 6757 if (savedConfig != null) { 6758 // There is an existing config with this netId, but it wasn't exposed 6759 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 6760 // getConfiguredNetworks). Remove those bits and update the config. 6761 config = savedConfig; 6762 loge("CONNECT_NETWORK updating existing config with id=" + 6763 config.networkId + " configKey=" + configKey); 6764 config.ephemeral = false; 6765 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 6766 updatedExisting = true; 6767 } 6768 6769 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 6770 netId = result.getNetworkId(); 6771 } 6772 config = mWifiConfigStore.getWifiConfiguration(netId); 6773 6774 if (config == null) { 6775 loge("CONNECT_NETWORK no config for id=" + Integer.toString(netId) + " " 6776 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 6777 + getCurrentState().getName()); 6778 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6779 WifiManager.ERROR); 6780 break; 6781 } else { 6782 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 6783 loge("CONNECT_NETWORK id=" + Integer.toString(netId) 6784 + " config=" + config.SSID 6785 + " cnid=" + config.networkId 6786 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 6787 + " my state " + getCurrentState().getName() 6788 + " uid = " + message.sendingUid 6789 + wasSkipped); 6790 } 6791 6792 autoRoamSetBSSID(netId, "any"); 6793 6794 if (message.sendingUid == Process.WIFI_UID 6795 || message.sendingUid == Process.SYSTEM_UID) { 6796 // As a sanity measure, clear the BSSID in the supplicant network block. 6797 // If system or Wifi Settings want to connect, they will not 6798 // specify the BSSID. 6799 // If an app however had added a BSSID to this configuration, and the BSSID 6800 // was wrong, Then we would forever fail to connect until that BSSID 6801 // is cleaned up. 6802 clearConfigBSSID(config, "CONNECT_NETWORK"); 6803 } 6804 6805 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 6806 6807 /* Tell autojoin the user did try to connect to that network */ 6808 mWifiAutoJoinController.updateConfigurationHistory(netId, true, true); 6809 6810 mWifiConfigStore.setLastSelectedConfiguration(netId); 6811 6812 didDisconnect = false; 6813 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 6814 && mLastNetworkId != netId) { 6815 /** Supplicant will ignore the reconnect if we are currently associated, 6816 * hence trigger a disconnect 6817 */ 6818 didDisconnect = true; 6819 mWifiNative.disconnect(); 6820 } 6821 6822 // Make sure the network is enabled, since supplicant will not reenable it 6823 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6824 6825 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ true) && 6826 mWifiNative.reconnect()) { 6827 lastConnectAttempt = System.currentTimeMillis(); 6828 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6829 6830 /* The state tracker handles enabling networks upon completion/failure */ 6831 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 6832 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 6833 if (didDisconnect) { 6834 /* Expect a disconnection from the old connection */ 6835 transitionTo(mDisconnectingState); 6836 } else if (updatedExisting && getCurrentState() == mConnectedState && 6837 getCurrentWifiConfiguration().networkId == netId) { 6838 // Update the current set of network capabilities, but stay in the 6839 // current state. 6840 updateCapabilities(config); 6841 } else { 6842 /** 6843 * Directly go to disconnected state where we 6844 * process the connection events from supplicant 6845 **/ 6846 transitionTo(mDisconnectedState); 6847 } 6848 } else { 6849 loge("Failed to connect config: " + config + " netId: " + netId); 6850 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6851 WifiManager.ERROR); 6852 break; 6853 } 6854 break; 6855 case WifiManager.SAVE_NETWORK: 6856 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6857 // Fall thru 6858 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 6859 lastSavedConfigurationAttempt = null; // Used for debug 6860 config = (WifiConfiguration) message.obj; 6861 if (config == null) { 6862 loge("ERROR: SAVE_NETWORK with null configuration" 6863 + mSupplicantStateTracker.getSupplicantStateName() 6864 + " my state " + getCurrentState().getName()); 6865 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6866 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 6867 WifiManager.ERROR); 6868 break; 6869 } 6870 lastSavedConfigurationAttempt = new WifiConfiguration(config); 6871 int nid = config.networkId; 6872 loge("SAVE_NETWORK id=" + Integer.toString(nid) 6873 + " config=" + config.SSID 6874 + " nid=" + config.networkId 6875 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 6876 + " my state " + getCurrentState().getName()); 6877 6878 result = mWifiConfigStore.saveNetwork(config, -1); 6879 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 6880 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 6881 if (result.hasIpChanged()) { 6882 // The currently connection configuration was changed 6883 // We switched from DHCP to static or from static to DHCP, or the 6884 // static IP address has changed. 6885 log("Reconfiguring IP on connection"); 6886 // TODO: clear addresses and disable IPv6 6887 // to simplify obtainingIpState. 6888 transitionTo(mObtainingIpState); 6889 } 6890 if (result.hasProxyChanged()) { 6891 log("Reconfiguring proxy on connection"); 6892 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 6893 } 6894 } 6895 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 6896 if (VDBG) { 6897 loge("Success save network nid=" 6898 + Integer.toString(result.getNetworkId())); 6899 } 6900 6901 synchronized(mScanResultCache) { 6902 /** 6903 * If the command comes from WifiManager, then 6904 * tell autojoin the user did try to modify and save that network, 6905 * and interpret the SAVE_NETWORK as a request to connect 6906 */ 6907 boolean user = message.what == WifiManager.SAVE_NETWORK; 6908 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 6909 , user, true); 6910 mWifiAutoJoinController.attemptAutoJoin(); 6911 } 6912 } else { 6913 loge("Failed to save network"); 6914 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6915 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 6916 WifiManager.ERROR); 6917 } 6918 break; 6919 case WifiManager.FORGET_NETWORK: 6920 // Debug only, remember last configuration that was forgotten 6921 WifiConfiguration toRemove 6922 = mWifiConfigStore.getWifiConfiguration(message.arg1); 6923 if (toRemove == null) { 6924 lastForgetConfigurationAttempt = null; 6925 } else { 6926 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 6927 } 6928 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 6929 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 6930 } else { 6931 loge("Failed to forget network"); 6932 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 6933 WifiManager.ERROR); 6934 } 6935 break; 6936 case WifiManager.START_WPS: 6937 WpsInfo wpsInfo = (WpsInfo) message.obj; 6938 WpsResult wpsResult; 6939 switch (wpsInfo.setup) { 6940 case WpsInfo.PBC: 6941 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 6942 break; 6943 case WpsInfo.KEYPAD: 6944 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 6945 break; 6946 case WpsInfo.DISPLAY: 6947 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 6948 break; 6949 default: 6950 wpsResult = new WpsResult(Status.FAILURE); 6951 loge("Invalid setup for WPS"); 6952 break; 6953 } 6954 mWifiConfigStore.setLastSelectedConfiguration 6955 (WifiConfiguration.INVALID_NETWORK_ID); 6956 if (wpsResult.status == Status.SUCCESS) { 6957 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 6958 transitionTo(mWpsRunningState); 6959 } else { 6960 loge("Failed to start WPS with config " + wpsInfo.toString()); 6961 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 6962 } 6963 break; 6964 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6965 if (DBG) log("Network connection established"); 6966 mLastNetworkId = message.arg1; 6967 mLastBssid = (String) message.obj; 6968 6969 mWifiInfo.setBSSID(mLastBssid); 6970 mWifiInfo.setNetworkId(mLastNetworkId); 6971 6972 sendNetworkStateChangeBroadcast(mLastBssid); 6973 transitionTo(mObtainingIpState); 6974 break; 6975 case WifiMonitor.ANQP_DONE_EVENT: 6976 Log.d("HS2J", String.format("WFSM: ANQP for %016x %s", 6977 (Long)message.obj, message.arg1 != 0 ? "success" : "fail")); 6978 mWifiConfigStore.notifyANQPDone((Long) message.obj, message.arg1 != 0); 6979 break; 6980 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6981 // Calling handleNetworkDisconnect here is redundant because we might already 6982 // have called it when leaving L2ConnectedState to go to disconnecting state 6983 // or thru other path 6984 // We should normally check the mWifiInfo or mLastNetworkId so as to check 6985 // if they are valid, and only in this case call handleNEtworkDisconnect, 6986 // TODO: this should be fixed for a L MR release 6987 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 6988 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 6989 // at the chip etc... 6990 if (DBG) log("ConnectModeState: Network connection lost "); 6991 handleNetworkDisconnect(); 6992 transitionTo(mDisconnectedState); 6993 break; 6994 default: 6995 return NOT_HANDLED; 6996 } 6997 return HANDLED; 6998 } 6999 } 7000 7001 private void updateCapabilities(WifiConfiguration config) { 7002 if (config.ephemeral) { 7003 mNetworkCapabilities.removeCapability( 7004 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7005 } else { 7006 mNetworkCapabilities.addCapability( 7007 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7008 } 7009 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 7010 } 7011 7012 private class WifiNetworkAgent extends NetworkAgent { 7013 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7014 NetworkCapabilities nc, LinkProperties lp, int score) { 7015 super(l, c, TAG, ni, nc, lp, score); 7016 } 7017 protected void unwanted() { 7018 // Ignore if we're not the current networkAgent. 7019 if (this != mNetworkAgent) return; 7020 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7021 + Integer.toString(mWifiInfo.score)); 7022 unwantedNetwork(network_status_unwanted_disconnect); 7023 } 7024 7025 protected void networkStatus(int status) { 7026 if (status == NetworkAgent.INVALID_NETWORK) { 7027 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7028 + Integer.toString(mWifiInfo.score)); 7029 unwantedNetwork(network_status_unwanted_disable_autojoin); 7030 } else if (status == NetworkAgent.VALID_NETWORK) { 7031 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7032 + Integer.toString(mWifiInfo.score)); 7033 doNetworkStatus(status); 7034 } 7035 } 7036 } 7037 7038 void unwantedNetwork(int reason) { 7039 sendMessage(CMD_UNWANTED_NETWORK, reason); 7040 } 7041 7042 void doNetworkStatus(int status) { 7043 sendMessage(CMD_NETWORK_STATUS, status); 7044 } 7045 7046 // rfc4186 & rfc4187: 7047 // create Permanent Identity base on IMSI, 7048 // identity = usernam@realm 7049 // with username = prefix | IMSI 7050 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 7051 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 7052 String mcc; 7053 String mnc; 7054 String prefix; 7055 7056 if (imsi == null || imsi.isEmpty()) 7057 return ""; 7058 7059 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 7060 prefix = "1"; 7061 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 7062 prefix = "0"; 7063 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME) 7064 prefix = "6"; 7065 else // not a valide EapMethod 7066 return ""; 7067 7068 /* extract mcc & mnc from mccMnc */ 7069 if (mccMnc != null && !mccMnc.isEmpty()) { 7070 mcc = mccMnc.substring(0, 3); 7071 mnc = mccMnc.substring(3); 7072 if (mnc.length() == 2) 7073 mnc = "0" + mnc; 7074 } else { 7075 // extract mcc & mnc from IMSI, assume mnc size is 3 7076 mcc = imsi.substring(0, 3); 7077 mnc = imsi.substring(3, 6); 7078 } 7079 7080 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 7081 } 7082 7083 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 7084 if (config == null) 7085 return false; 7086 7087 // We are still seeing a fairly high power consumption triggered by autojoin scans 7088 // Hence do partial scans only for PSK configuration that are roamable since the 7089 // primary purpose of the partial scans is roaming. 7090 // Full badn scans with exponential backoff for the purpose or extended roaming and 7091 // network switching are performed unconditionally. 7092 WifiConfigStore.ScanDetailCache scanDetailCache = 7093 mWifiConfigStore.getScanDetailCache(config); 7094 if (scanDetailCache == null 7095 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 7096 || scanDetailCache.size() > 6) { 7097 //return true but to not trigger the scan 7098 return true; 7099 } 7100 HashSet<Integer> channels 7101 = mWifiConfigStore.makeChannelList(config, 7102 ONE_HOUR_MILLI, restrictChannelList); 7103 if (channels != null && channels.size() != 0) { 7104 StringBuilder freqs = new StringBuilder(); 7105 boolean first = true; 7106 for (Integer channel : channels) { 7107 if (!first) 7108 freqs.append(","); 7109 freqs.append(channel.toString()); 7110 first = false; 7111 } 7112 //if (DBG) { 7113 loge("WifiStateMachine starting scan for " + config.configKey() + " with " + freqs); 7114 //} 7115 // Call wifi native to start the scan 7116 if (startScanNative( 7117 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 7118 freqs.toString())) { 7119 // Only count battery consumption if scan request is accepted 7120 noteScanStart(SCAN_ALARM_SOURCE, null); 7121 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 7122 } else { 7123 // used for debug only, mark scan as failed 7124 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7125 } 7126 return true; 7127 } else { 7128 if (DBG) loge("WifiStateMachine no channels for " + config.configKey()); 7129 return false; 7130 } 7131 } 7132 7133 void clearCurrentConfigBSSID(String dbg) { 7134 // Clear the bssid in the current config's network block 7135 WifiConfiguration config = getCurrentWifiConfiguration(); 7136 if (config == null) 7137 return; 7138 clearConfigBSSID(config, dbg); 7139 } 7140 void clearConfigBSSID(WifiConfiguration config, String dbg) { 7141 if (config == null) 7142 return; 7143 if (DBG) { 7144 loge(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 7145 + " config.bssid " + config.BSSID); 7146 } 7147 config.autoJoinBSSID = "any"; 7148 config.BSSID = "any"; 7149 if (DBG) { 7150 loge(dbg + " " + config.SSID 7151 + " nid=" + Integer.toString(config.networkId)); 7152 } 7153 mWifiConfigStore.saveWifiConfigBSSID(config); 7154 } 7155 7156 class L2ConnectedState extends State { 7157 @Override 7158 public void enter() { 7159 mRssiPollToken++; 7160 if (mEnableRssiPolling) { 7161 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 7162 } 7163 if (mNetworkAgent != null) { 7164 loge("Have NetworkAgent when entering L2Connected"); 7165 setNetworkDetailedState(DetailedState.DISCONNECTED); 7166 } 7167 setNetworkDetailedState(DetailedState.CONNECTING); 7168 7169 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 7170 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 7171 } 7172 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 7173 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 7174 mLinkProperties, 60); 7175 7176 // We must clear the config BSSID, as the wifi chipset may decide to roam 7177 // from this point on and having the BSSID specified in the network block would 7178 // cause the roam to faile and the device to disconnect 7179 clearCurrentConfigBSSID("L2ConnectedState"); 7180 } 7181 7182 @Override 7183 public void exit() { 7184 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 7185 // Bug: 15347363 7186 // For paranoia's sake, call handleNetworkDisconnect 7187 // only if BSSID is null or last networkId 7188 // is not invalid. 7189 if (DBG) { 7190 StringBuilder sb = new StringBuilder(); 7191 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 7192 if (mLastBssid !=null) { 7193 sb.append(" ").append(mLastBssid); 7194 } 7195 } 7196 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7197 handleNetworkDisconnect(); 7198 } 7199 } 7200 7201 @Override 7202 public boolean processMessage(Message message) { 7203 logStateAndMessage(message, getClass().getSimpleName()); 7204 7205 switch (message.what) { 7206 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 7207 handlePreDhcpSetup(); 7208 break; 7209 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 7210 handlePostDhcpSetup(); 7211 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 7212 if (DBG) log("WifiStateMachine DHCP successful"); 7213 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 7214 // We advance to mVerifyingLinkState because handleIPv4Success will call 7215 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 7216 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 7217 if (DBG) { 7218 int count = -1; 7219 WifiConfiguration config = getCurrentWifiConfiguration(); 7220 if (config != null) { 7221 count = config.numConnectionFailures; 7222 } 7223 log("WifiStateMachine DHCP failure count=" + count); 7224 } 7225 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 7226 // As above, we transition to mDisconnectingState via updateLinkProperties. 7227 } 7228 break; 7229 case CMD_IP_CONFIGURATION_SUCCESSFUL: 7230 handleSuccessfulIpConfiguration(); 7231 sendConnectedState(); 7232 transitionTo(mConnectedState); 7233 break; 7234 case CMD_IP_CONFIGURATION_LOST: 7235 // Get Link layer stats so as we get fresh tx packet counters 7236 getWifiLinkLayerStats(true); 7237 handleIpConfigurationLost(); 7238 transitionTo(mDisconnectingState); 7239 break; 7240 case CMD_DISCONNECT: 7241 mWifiNative.disconnect(); 7242 transitionTo(mDisconnectingState); 7243 break; 7244 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7245 if (message.arg1 == 1) { 7246 mWifiNative.disconnect(); 7247 mTemporarilyDisconnectWifi = true; 7248 transitionTo(mDisconnectingState); 7249 } 7250 break; 7251 case CMD_SET_OPERATIONAL_MODE: 7252 if (message.arg1 != CONNECT_MODE) { 7253 sendMessage(CMD_DISCONNECT); 7254 deferMessage(message); 7255 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 7256 noteWifiDisabledWhileAssociated(); 7257 } 7258 } 7259 mWifiConfigStore. 7260 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7261 break; 7262 case CMD_SET_COUNTRY_CODE: 7263 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7264 deferMessage(message); 7265 break; 7266 case CMD_START_SCAN: 7267 //if (DBG) { 7268 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7269 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 7270 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 7271 + " targetRoamBSSID=" + mTargetRoamBSSID 7272 + " RSSI=" + mWifiInfo.getRssi()); 7273 //} 7274 if (message.arg1 == SCAN_ALARM_SOURCE) { 7275 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 7276 // not be processed) and restart the scan if needed 7277 boolean shouldScan = 7278 mScreenOn && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get(); 7279 if (!checkAndRestartDelayedScan(message.arg2, 7280 shouldScan, 7281 mWifiConfigStore.associatedPartialScanPeriodMilli.get(), null, null)) { 7282 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 7283 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7284 + message.arg1 7285 + " " + message.arg2 + ", " + mDelayedScanCounter 7286 + " -> obsolete"); 7287 return HANDLED; 7288 } 7289 if (mP2pConnected.get()) { 7290 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7291 + message.arg1 7292 + " " + message.arg2 + ", " + mDelayedScanCounter 7293 + " ignore because P2P is connected"); 7294 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7295 return HANDLED; 7296 } 7297 boolean tryFullBandScan = false; 7298 boolean restrictChannelList = false; 7299 long now_ms = System.currentTimeMillis(); 7300 if (DBG) { 7301 loge("WifiStateMachine CMD_START_SCAN with age=" 7302 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7303 + " interval=" + fullBandConnectedTimeIntervalMilli 7304 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7305 } 7306 if (mWifiInfo != null) { 7307 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 7308 (now_ms - lastFullBandConnectedTimeMilli) 7309 > fullBandConnectedTimeIntervalMilli) { 7310 if (DBG) { 7311 loge("WifiStateMachine CMD_START_SCAN try full band scan age=" 7312 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7313 + " interval=" + fullBandConnectedTimeIntervalMilli 7314 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7315 } 7316 tryFullBandScan = true; 7317 } 7318 7319 if (mWifiInfo.txSuccessRate > 7320 mWifiConfigStore.maxTxPacketForFullScans 7321 || mWifiInfo.rxSuccessRate > 7322 mWifiConfigStore.maxRxPacketForFullScans) { 7323 // Too much traffic at the interface, hence no full band scan 7324 if (DBG) { 7325 loge("WifiStateMachine CMD_START_SCAN " + 7326 "prevent full band scan due to pkt rate"); 7327 } 7328 tryFullBandScan = false; 7329 } 7330 7331 if (mWifiInfo.txSuccessRate > 7332 mWifiConfigStore.maxTxPacketForPartialScans 7333 || mWifiInfo.rxSuccessRate > 7334 mWifiConfigStore.maxRxPacketForPartialScans) { 7335 // Don't scan if lots of packets are being sent 7336 restrictChannelList = true; 7337 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 7338 if (DBG) { 7339 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7340 + " ...and ignore scans" 7341 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 7342 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 7343 } 7344 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 7345 return HANDLED; 7346 } 7347 } 7348 } 7349 7350 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 7351 if (DBG) { 7352 loge("WifiStateMachine CMD_START_SCAN full=" + 7353 tryFullBandScan); 7354 } 7355 if (currentConfiguration != null) { 7356 if (fullBandConnectedTimeIntervalMilli 7357 < mWifiConfigStore.associatedPartialScanPeriodMilli.get()) { 7358 // Sanity 7359 fullBandConnectedTimeIntervalMilli 7360 = mWifiConfigStore.associatedPartialScanPeriodMilli.get(); 7361 } 7362 if (tryFullBandScan) { 7363 lastFullBandConnectedTimeMilli = now_ms; 7364 if (fullBandConnectedTimeIntervalMilli 7365 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7366 // Increase the interval 7367 fullBandConnectedTimeIntervalMilli 7368 = fullBandConnectedTimeIntervalMilli 7369 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 7370 7371 if (DBG) { 7372 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7373 + fullBandConnectedTimeIntervalMilli); 7374 } 7375 } 7376 handleScanRequest( 7377 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7378 } else { 7379 if (!startScanForConfiguration( 7380 currentConfiguration, restrictChannelList)) { 7381 if (DBG) { 7382 loge("WifiStateMachine starting scan, " + 7383 " did not find channels -> full"); 7384 } 7385 lastFullBandConnectedTimeMilli = now_ms; 7386 if (fullBandConnectedTimeIntervalMilli 7387 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7388 // Increase the interval 7389 fullBandConnectedTimeIntervalMilli 7390 = fullBandConnectedTimeIntervalMilli 7391 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 7392 7393 if (DBG) { 7394 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7395 + fullBandConnectedTimeIntervalMilli); 7396 } 7397 } 7398 handleScanRequest( 7399 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7400 } 7401 } 7402 7403 } else { 7404 loge("CMD_START_SCAN : connected mode and no configuration"); 7405 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7406 } 7407 } else { 7408 // Not scan alarm source 7409 return NOT_HANDLED; 7410 } 7411 break; 7412 /* Ignore connection to same network */ 7413 case WifiManager.CONNECT_NETWORK: 7414 int netId = message.arg1; 7415 if (mWifiInfo.getNetworkId() == netId) { 7416 break; 7417 } 7418 return NOT_HANDLED; 7419 /* Ignore */ 7420 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7421 break; 7422 case CMD_RSSI_POLL: 7423 if (message.arg1 == mRssiPollToken) { 7424 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 7425 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 7426 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 7427 if (stats != null) { 7428 // Sanity check the results provided by driver 7429 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 7430 && (stats.rssi_mgmt == 0 7431 || stats.beacon_rx == 0)) { 7432 stats = null; 7433 } 7434 } 7435 // Get Info and continue polling 7436 fetchRssiLinkSpeedAndFrequencyNative(); 7437 calculateWifiScore(stats); 7438 } 7439 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7440 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7441 7442 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 7443 } else { 7444 // Polling has completed 7445 } 7446 break; 7447 case CMD_ENABLE_RSSI_POLL: 7448 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 7449 mEnableRssiPolling = (message.arg1 == 1); 7450 } else { 7451 mEnableRssiPolling = false; 7452 } 7453 mRssiPollToken++; 7454 if (mEnableRssiPolling) { 7455 // First poll 7456 fetchRssiLinkSpeedAndFrequencyNative(); 7457 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7458 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7459 } else { 7460 cleanWifiScore(); 7461 } 7462 break; 7463 case WifiManager.RSSI_PKTCNT_FETCH: 7464 RssiPacketCountInfo info = new RssiPacketCountInfo(); 7465 fetchRssiLinkSpeedAndFrequencyNative(); 7466 info.rssi = mWifiInfo.getRssi(); 7467 fetchPktcntNative(info); 7468 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 7469 break; 7470 case CMD_DELAYED_NETWORK_DISCONNECT: 7471 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 7472 7473 // Ignore if we are not debouncing 7474 loge("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 7475 + message.arg1); 7476 return HANDLED; 7477 } else { 7478 loge("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 7479 + message.arg1); 7480 7481 linkDebouncing = false; 7482 // If we are still debouncing while this message comes, 7483 // it means we were not able to reconnect within the alloted time 7484 // = LINK_FLAPPING_DEBOUNCE_MSEC 7485 // and thus, trigger a real disconnect 7486 handleNetworkDisconnect(); 7487 transitionTo(mDisconnectedState); 7488 } 7489 break; 7490 case CMD_ASSOCIATED_BSSID: 7491 if ((String) message.obj == null) { 7492 loge("Associated command w/o BSSID"); 7493 break; 7494 } 7495 mLastBssid = (String) message.obj; 7496 if (mLastBssid != null 7497 && (mWifiInfo.getBSSID() == null 7498 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 7499 mWifiInfo.setBSSID((String) message.obj); 7500 sendNetworkStateChangeBroadcast(mLastBssid); 7501 } 7502 break; 7503 default: 7504 return NOT_HANDLED; 7505 } 7506 7507 return HANDLED; 7508 } 7509 } 7510 7511 class ObtainingIpState extends State { 7512 @Override 7513 public void enter() { 7514 if (DBG) { 7515 String key = ""; 7516 if (getCurrentWifiConfiguration() != null) { 7517 key = getCurrentWifiConfiguration().configKey(); 7518 } 7519 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 7520 + " " + key + " " 7521 + " roam=" + mAutoRoaming 7522 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 7523 + " watchdog= " + obtainingIpWatchdogCount); 7524 } 7525 7526 // Reset link Debouncing, indicating we have successfully re-connected to the AP 7527 // We might still be roaming 7528 linkDebouncing = false; 7529 7530 // Send event to CM & network change broadcast 7531 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 7532 7533 // We must clear the config BSSID, as the wifi chipset may decide to roam 7534 // from this point on and having the BSSID specified in the network block would 7535 // cause the roam to faile and the device to disconnect 7536 clearCurrentConfigBSSID("ObtainingIpAddress"); 7537 7538 try { 7539 mNwService.enableIpv6(mInterfaceName); 7540 } catch (RemoteException re) { 7541 loge("Failed to enable IPv6: " + re); 7542 } catch (IllegalStateException e) { 7543 loge("Failed to enable IPv6: " + e); 7544 } 7545 7546 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 7547 if (isRoaming()) { 7548 renewDhcp(); 7549 } else { 7550 // Remove any IP address on the interface in case we're switching from static 7551 // IP configuration to DHCP. This is safe because if we get here when not 7552 // roaming, we don't have a usable address. 7553 clearIPv4Address(mInterfaceName); 7554 startDhcp(); 7555 } 7556 obtainingIpWatchdogCount++; 7557 loge("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 7558 // Get Link layer stats so as we get fresh tx packet counters 7559 getWifiLinkLayerStats(true); 7560 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 7561 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 7562 } else { 7563 // stop any running dhcp before assigning static IP 7564 stopDhcp(); 7565 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 7566 mLastNetworkId); 7567 if (config.ipAddress == null) { 7568 loge("Static IP lacks address"); 7569 sendMessage(CMD_STATIC_IP_FAILURE); 7570 } else { 7571 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 7572 ifcg.setLinkAddress(config.ipAddress); 7573 ifcg.setInterfaceUp(); 7574 try { 7575 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 7576 if (DBG) log("Static IP configuration succeeded"); 7577 DhcpResults dhcpResults = new DhcpResults(config); 7578 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 7579 } catch (RemoteException re) { 7580 loge("Static IP configuration failed: " + re); 7581 sendMessage(CMD_STATIC_IP_FAILURE); 7582 } catch (IllegalStateException e) { 7583 loge("Static IP configuration failed: " + e); 7584 sendMessage(CMD_STATIC_IP_FAILURE); 7585 } 7586 } 7587 } 7588 } 7589 @Override 7590 public boolean processMessage(Message message) { 7591 logStateAndMessage(message, getClass().getSimpleName()); 7592 7593 switch(message.what) { 7594 case CMD_STATIC_IP_SUCCESS: 7595 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 7596 break; 7597 case CMD_STATIC_IP_FAILURE: 7598 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 7599 break; 7600 case CMD_AUTO_CONNECT: 7601 case CMD_AUTO_ROAM: 7602 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7603 break; 7604 case WifiManager.SAVE_NETWORK: 7605 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7606 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7607 deferMessage(message); 7608 break; 7609 /* Defer any power mode changes since we must keep active power mode at DHCP */ 7610 case CMD_SET_HIGH_PERF_MODE: 7611 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7612 deferMessage(message); 7613 break; 7614 /* Defer scan request since we should not switch to other channels at DHCP */ 7615 case CMD_START_SCAN: 7616 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7617 deferMessage(message); 7618 break; 7619 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 7620 if (message.arg1 == obtainingIpWatchdogCount) { 7621 loge("ObtainingIpAddress: Watchdog Triggered, count=" 7622 + obtainingIpWatchdogCount); 7623 handleIpConfigurationLost(); 7624 transitionTo(mDisconnectingState); 7625 break; 7626 } 7627 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7628 break; 7629 default: 7630 return NOT_HANDLED; 7631 } 7632 return HANDLED; 7633 } 7634 } 7635 7636 class VerifyingLinkState extends State { 7637 @Override 7638 public void enter() { 7639 log(getName() + " enter"); 7640 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 7641 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 7642 sendNetworkStateChangeBroadcast(mLastBssid); 7643 // End roaming 7644 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7645 } 7646 @Override 7647 public boolean processMessage(Message message) { 7648 logStateAndMessage(message, getClass().getSimpleName()); 7649 7650 switch (message.what) { 7651 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7652 // Stay here 7653 log(getName() + " POOR_LINK_DETECTED: no transition"); 7654 break; 7655 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 7656 log(getName() + " GOOD_LINK_DETECTED: transition to captive portal check"); 7657 7658 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 7659 sendConnectedState(); 7660 transitionTo(mConnectedState); 7661 break; 7662 default: 7663 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 7664 return NOT_HANDLED; 7665 } 7666 return HANDLED; 7667 } 7668 } 7669 7670 private void sendConnectedState() { 7671 // Send out a broadcast with the CAPTIVE_PORTAL_CHECK to preserve 7672 // existing behaviour. The captive portal check really happens after we 7673 // transition into DetailedState.CONNECTED. 7674 setNetworkDetailedState(DetailedState.CAPTIVE_PORTAL_CHECK); 7675 mWifiConfigStore.updateStatus(mLastNetworkId, 7676 DetailedState.CAPTIVE_PORTAL_CHECK); 7677 sendNetworkStateChangeBroadcast(mLastBssid); 7678 7679 if (mWifiConfigStore.getLastSelectedConfiguration() != null) { 7680 if (mNetworkAgent != null) mNetworkAgent.explicitlySelected(); 7681 } 7682 7683 setNetworkDetailedState(DetailedState.CONNECTED); 7684 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 7685 sendNetworkStateChangeBroadcast(mLastBssid); 7686 } 7687 7688 class RoamingState extends State { 7689 boolean mAssociated; 7690 @Override 7691 public void enter() { 7692 if (DBG) { 7693 log("RoamingState Enter" 7694 + " mScreenOn=" + mScreenOn ); 7695 } 7696 setScanAlarm(false); 7697 7698 // Make sure we disconnect if roaming fails 7699 roamWatchdogCount++; 7700 loge("Start Roam Watchdog " + roamWatchdogCount); 7701 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 7702 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 7703 mAssociated = false; 7704 } 7705 @Override 7706 public boolean processMessage(Message message) { 7707 logStateAndMessage(message, getClass().getSimpleName()); 7708 WifiConfiguration config; 7709 switch (message.what) { 7710 case CMD_IP_CONFIGURATION_LOST: 7711 config = getCurrentWifiConfiguration(); 7712 if (config != null) { 7713 mWifiConfigStore.noteRoamingFailure(config, 7714 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 7715 } 7716 return NOT_HANDLED; 7717 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7718 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 7719 return HANDLED; 7720 case CMD_UNWANTED_NETWORK: 7721 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 7722 return HANDLED; 7723 case CMD_SET_OPERATIONAL_MODE: 7724 if (message.arg1 != CONNECT_MODE) { 7725 deferMessage(message); 7726 } 7727 break; 7728 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7729 /** 7730 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 7731 * before NETWORK_DISCONNECTION_EVENT 7732 * And there is an associated BSSID corresponding to our target BSSID, then 7733 * we have missed the network disconnection, transition to mDisconnectedState 7734 * and handle the rest of the events there. 7735 */ 7736 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 7737 if (stateChangeResult.state == SupplicantState.DISCONNECTED 7738 || stateChangeResult.state == SupplicantState.INACTIVE 7739 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 7740 if (DBG) { 7741 log("STATE_CHANGE_EVENT in roaming state " 7742 + stateChangeResult.toString() ); 7743 } 7744 if (stateChangeResult.BSSID != null 7745 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 7746 handleNetworkDisconnect(); 7747 transitionTo(mDisconnectedState); 7748 } 7749 } 7750 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 7751 // We completed the layer2 roaming part 7752 mAssociated = true; 7753 if (stateChangeResult.BSSID != null) { 7754 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 7755 } 7756 } 7757 break; 7758 case CMD_ROAM_WATCHDOG_TIMER: 7759 if (roamWatchdogCount == message.arg1) { 7760 if (DBG) log("roaming watchdog! -> disconnect"); 7761 mRoamFailCount++; 7762 handleNetworkDisconnect(); 7763 mWifiNative.disconnect(); 7764 transitionTo(mDisconnectedState); 7765 } 7766 break; 7767 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7768 if (mAssociated) { 7769 if (DBG) log("roaming and Network connection established"); 7770 mLastNetworkId = message.arg1; 7771 mLastBssid = (String) message.obj; 7772 mWifiInfo.setBSSID(mLastBssid); 7773 mWifiInfo.setNetworkId(mLastNetworkId); 7774 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 7775 sendNetworkStateChangeBroadcast(mLastBssid); 7776 transitionTo(mObtainingIpState); 7777 } else { 7778 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7779 } 7780 break; 7781 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7782 // Throw away but only if it corresponds to the network we're roaming to 7783 String bssid = (String)message.obj; 7784 if (true) { 7785 String target = ""; 7786 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 7787 log("NETWORK_DISCONNECTION_EVENT in roaming state" 7788 + " BSSID=" + bssid 7789 + " target=" + target); 7790 } 7791 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 7792 handleNetworkDisconnect(); 7793 transitionTo(mDisconnectedState); 7794 } 7795 break; 7796 case WifiMonitor.SSID_TEMP_DISABLED: 7797 // Auth error while roaming 7798 loge("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 7799 + " id=" + Integer.toString(message.arg1) 7800 + " isRoaming=" + isRoaming() 7801 + " roam=" + Integer.toString(mAutoRoaming)); 7802 if (message.arg1 == mLastNetworkId) { 7803 config = getCurrentWifiConfiguration(); 7804 if (config != null) { 7805 mWifiConfigStore.noteRoamingFailure(config, 7806 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 7807 } 7808 handleNetworkDisconnect(); 7809 transitionTo(mDisconnectingState); 7810 } 7811 return NOT_HANDLED; 7812 case CMD_START_SCAN: 7813 deferMessage(message); 7814 break; 7815 default: 7816 return NOT_HANDLED; 7817 } 7818 return HANDLED; 7819 } 7820 7821 @Override 7822 public void exit() { 7823 loge("WifiStateMachine: Leaving Roaming state"); 7824 } 7825 } 7826 7827 class ConnectedState extends State { 7828 @Override 7829 public void enter() { 7830 String address; 7831 updateDefaultRouteMacAddress(1000); 7832 if (DBG) { 7833 log("ConnectedState Enter " 7834 + " mScreenOn=" + mScreenOn 7835 + " scanperiod=" 7836 + Integer.toString(mWifiConfigStore.associatedPartialScanPeriodMilli.get()) ); 7837 } 7838 if (mScreenOn 7839 && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 7840 // restart scan alarm 7841 startDelayedScan(mWifiConfigStore.associatedPartialScanPeriodMilli.get(), null, null); 7842 } 7843 registerConnected(); 7844 lastConnectAttempt = 0; 7845 targetWificonfiguration = null; 7846 // Paranoia 7847 linkDebouncing = false; 7848 7849 // Not roaming anymore 7850 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7851 7852 if (testNetworkDisconnect) { 7853 testNetworkDisconnectCounter++; 7854 loge("ConnectedState Enter start disconnect test " + 7855 testNetworkDisconnectCounter); 7856 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 7857 testNetworkDisconnectCounter, 0), 15000); 7858 } 7859 7860 // Reenable all networks, allow for hidden networks to be scanned 7861 mWifiConfigStore.enableAllNetworks(); 7862 7863 mLastDriverRoamAttempt = 0; 7864 } 7865 @Override 7866 public boolean processMessage(Message message) { 7867 WifiConfiguration config = null; 7868 logStateAndMessage(message, getClass().getSimpleName()); 7869 7870 switch (message.what) { 7871 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7872 if (DBG) log("Watchdog reports poor link"); 7873 transitionTo(mVerifyingLinkState); 7874 break; 7875 case CMD_UNWANTED_NETWORK: 7876 if (message.arg1 == network_status_unwanted_disconnect) { 7877 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 7878 mWifiNative.disconnect(); 7879 transitionTo(mDisconnectingState); 7880 } else if (message.arg1 == network_status_unwanted_disable_autojoin) { 7881 config = getCurrentWifiConfiguration(); 7882 if (config != null) { 7883 // Disable autojoin 7884 config.numNoInternetAccessReports += 1; 7885 } 7886 } 7887 return HANDLED; 7888 case CMD_NETWORK_STATUS: 7889 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 7890 config = getCurrentWifiConfiguration(); 7891 if (config != null) { 7892 // re-enable autojoin 7893 config.numNoInternetAccessReports = 0; 7894 config.validatedInternetAccess = true; 7895 } 7896 } 7897 return HANDLED; 7898 case CMD_TEST_NETWORK_DISCONNECT: 7899 // Force a disconnect 7900 if (message.arg1 == testNetworkDisconnectCounter) { 7901 mWifiNative.disconnect(); 7902 } 7903 break; 7904 case CMD_ASSOCIATED_BSSID: 7905 // ASSOCIATING to a new BSSID while already connected, indicates 7906 // that driver is roaming 7907 mLastDriverRoamAttempt = System.currentTimeMillis(); 7908 String toBSSID = (String)message.obj; 7909 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 7910 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 7911 } 7912 return NOT_HANDLED; 7913 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7914 long lastRoam = 0; 7915 if (mLastDriverRoamAttempt != 0) { 7916 // Calculate time since last driver roam attempt 7917 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 7918 mLastDriverRoamAttempt = 0; 7919 } 7920 config = getCurrentWifiConfiguration(); 7921 if (mScreenOn 7922 && !linkDebouncing 7923 && config != null 7924 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 7925 && !mWifiConfigStore.isLastSelectedConfiguration(config) 7926 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 7927 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 7928 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 7929 && mWifiInfo.getRssi() > 7930 WifiConfiguration.BAD_RSSI_24) 7931 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 7932 && mWifiInfo.getRssi() > 7933 WifiConfiguration.BAD_RSSI_5))) { 7934 // Start de-bouncing the L2 disconnection: 7935 // this L2 disconnection might be spurious. 7936 // Hence we allow 7 seconds for the state machine to try 7937 // to reconnect, go thru the 7938 // roaming cycle and enter Obtaining IP address 7939 // before signalling the disconnect to ConnectivityService and L3 7940 startScanForConfiguration(getCurrentWifiConfiguration(), false); 7941 linkDebouncing = true; 7942 7943 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 7944 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 7945 if (DBG) { 7946 log("NETWORK_DISCONNECTION_EVENT in connected state" 7947 + " BSSID=" + mWifiInfo.getBSSID() 7948 + " RSSI=" + mWifiInfo.getRssi() 7949 + " freq=" + mWifiInfo.getFrequency() 7950 + " reason=" + message.arg2 7951 + " -> debounce"); 7952 } 7953 return HANDLED; 7954 } else { 7955 if (DBG) { 7956 int ajst = -1; 7957 if (config != null) ajst = config.autoJoinStatus; 7958 log("NETWORK_DISCONNECTION_EVENT in connected state" 7959 + " BSSID=" + mWifiInfo.getBSSID() 7960 + " RSSI=" + mWifiInfo.getRssi() 7961 + " freq=" + mWifiInfo.getFrequency() 7962 + " was debouncing=" + linkDebouncing 7963 + " reason=" + message.arg2 7964 + " ajst=" + ajst); 7965 } 7966 } 7967 break; 7968 case CMD_AUTO_ROAM: 7969 // Clear the driver roam indication since we are attempting a framerwork roam 7970 mLastDriverRoamAttempt = 0; 7971 7972 /* Connect command coming from auto-join */ 7973 ScanResult candidate = (ScanResult)message.obj; 7974 String bssid = "any"; 7975 if (candidate != null && candidate.is5GHz()) { 7976 // Only lock BSSID for 5GHz networks 7977 bssid = candidate.BSSID; 7978 } 7979 int netId = mLastNetworkId; 7980 config = getCurrentWifiConfiguration(); 7981 7982 7983 if (config == null) { 7984 loge("AUTO_ROAM and no config, bail out..."); 7985 break; 7986 } 7987 7988 loge("CMD_AUTO_ROAM sup state " 7989 + mSupplicantStateTracker.getSupplicantStateName() 7990 + " my state " + getCurrentState().getName() 7991 + " nid=" + Integer.toString(netId) 7992 + " config " + config.configKey() 7993 + " roam=" + Integer.toString(message.arg2) 7994 + " to " + bssid 7995 + " targetRoamBSSID " + mTargetRoamBSSID); 7996 7997 /* Save the BSSID so as to lock it @ firmware */ 7998 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 7999 loge("AUTO_ROAM nothing to do"); 8000 // Same BSSID, nothing to do 8001 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8002 break; 8003 }; 8004 8005 // Make sure the network is enabled, since supplicant will not reenable it 8006 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 8007 8008 boolean ret = false; 8009 if (mLastNetworkId != netId) { 8010 if (mWifiConfigStore.selectNetwork(config, /* updatePriorities = */ false) && 8011 mWifiNative.reconnect()) { 8012 ret = true; 8013 } 8014 } else { 8015 ret = mWifiNative.reassociate(); 8016 } 8017 if (ret) { 8018 lastConnectAttempt = System.currentTimeMillis(); 8019 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 8020 8021 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 8022 mAutoRoaming = message.arg2; 8023 transitionTo(mRoamingState); 8024 8025 } else { 8026 loge("Failed to connect config: " + config + " netId: " + netId); 8027 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8028 WifiManager.ERROR); 8029 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 8030 break; 8031 } 8032 break; 8033 default: 8034 return NOT_HANDLED; 8035 } 8036 return HANDLED; 8037 } 8038 8039 @Override 8040 public void exit() { 8041 loge("WifiStateMachine: Leaving Connected state"); 8042 setScanAlarm(false); 8043 mLastDriverRoamAttempt = 0; 8044 } 8045 } 8046 8047 class DisconnectingState extends State { 8048 8049 @Override 8050 public void enter() { 8051 8052 if (PDBG) { 8053 loge(" Enter DisconnectingState State scan interval " + mFrameworkScanIntervalMs 8054 + " mEnableBackgroundScan= " + mEnableBackgroundScan 8055 + " screenOn=" + mScreenOn); 8056 } 8057 8058 // Make sure we disconnect: we enter this state prior connecting to a new 8059 // network, waiting for either a DISCONECT event or a SUPPLICANT_STATE_CHANGE 8060 // event which in this case will be indicating that supplicant started to associate. 8061 // In some cases supplicant doesn't ignore the connect requests (it might not 8062 // find the target SSID in its cache), 8063 // Therefore we end up stuck that state, hence the need for the watchdog. 8064 disconnectingWatchdogCount++; 8065 loge("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 8066 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 8067 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 8068 } 8069 8070 @Override 8071 public boolean processMessage(Message message) { 8072 logStateAndMessage(message, getClass().getSimpleName()); 8073 switch (message.what) { 8074 case CMD_SET_OPERATIONAL_MODE: 8075 if (message.arg1 != CONNECT_MODE) { 8076 deferMessage(message); 8077 } 8078 break; 8079 case CMD_START_SCAN: 8080 deferMessage(message); 8081 return HANDLED; 8082 case CMD_DISCONNECTING_WATCHDOG_TIMER: 8083 if (disconnectingWatchdogCount == message.arg1) { 8084 if (DBG) log("disconnecting watchdog! -> disconnect"); 8085 handleNetworkDisconnect(); 8086 transitionTo(mDisconnectedState); 8087 } 8088 break; 8089 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8090 /** 8091 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 8092 * we have missed the network disconnection, transition to mDisconnectedState 8093 * and handle the rest of the events there 8094 */ 8095 deferMessage(message); 8096 handleNetworkDisconnect(); 8097 transitionTo(mDisconnectedState); 8098 break; 8099 default: 8100 return NOT_HANDLED; 8101 } 8102 return HANDLED; 8103 } 8104 } 8105 8106 class DisconnectedState extends State { 8107 @Override 8108 public void enter() { 8109 // We dont scan frequently if this is a temporary disconnect 8110 // due to p2p 8111 if (mTemporarilyDisconnectWifi) { 8112 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 8113 return; 8114 } 8115 8116 mFrameworkScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 8117 Settings.Global.WIFI_FRAMEWORK_SCAN_INTERVAL_MS, 8118 mDefaultFrameworkScanIntervalMs); 8119 8120 if (PDBG) { 8121 loge(" Enter disconnected State scan interval " + mFrameworkScanIntervalMs 8122 + " mEnableBackgroundScan= " + mEnableBackgroundScan 8123 + " screenOn=" + mScreenOn 8124 + " mFrameworkScanIntervalMs=" + mFrameworkScanIntervalMs); 8125 } 8126 8127 /** clear the roaming state, if we were roaming, we failed */ 8128 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8129 8130 if (mScreenOn) { 8131 /** 8132 * screen lit and => delayed timer 8133 */ 8134 startDelayedScan(mDisconnectedScanPeriodMs, null, null); 8135 } else { 8136 /** 8137 * screen dark and PNO supported => scan alarm disabled 8138 */ 8139 if (mEnableBackgroundScan) { 8140 /* If a regular scan result is pending, do not initiate background 8141 * scan until the scan results are returned. This is needed because 8142 * initiating a background scan will cancel the regular scan and 8143 * scan results will not be returned until background scanning is 8144 * cleared 8145 */ 8146 if (!mIsScanOngoing) { 8147 enableBackgroundScan(true); 8148 } 8149 } else { 8150 setScanAlarm(true); 8151 } 8152 } 8153 8154 /** 8155 * If we have no networks saved, the supplicant stops doing the periodic scan. 8156 * The scans are useful to notify the user of the presence of an open network. 8157 * Note that these are not wake up scans. 8158 */ 8159 if (!mP2pConnected.get() && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8160 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8161 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8162 } 8163 8164 mDisconnectedTimeStamp = System.currentTimeMillis(); 8165 8166 } 8167 @Override 8168 public boolean processMessage(Message message) { 8169 boolean ret = HANDLED; 8170 8171 logStateAndMessage(message, getClass().getSimpleName()); 8172 8173 switch (message.what) { 8174 case CMD_NO_NETWORKS_PERIODIC_SCAN: 8175 if (mP2pConnected.get()) break; 8176 if (message.arg1 == mPeriodicScanToken && 8177 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8178 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 8179 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8180 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8181 } 8182 break; 8183 case WifiManager.FORGET_NETWORK: 8184 case CMD_REMOVE_NETWORK: 8185 // Set up a delayed message here. After the forget/remove is handled 8186 // the handled delayed message will determine if there is a need to 8187 // scan and continue 8188 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8189 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8190 ret = NOT_HANDLED; 8191 break; 8192 case CMD_SET_OPERATIONAL_MODE: 8193 if (message.arg1 != CONNECT_MODE) { 8194 mOperationalMode = message.arg1; 8195 8196 mWifiConfigStore.disableAllNetworks(); 8197 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8198 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 8199 setWifiState(WIFI_STATE_DISABLED); 8200 } 8201 transitionTo(mScanModeState); 8202 } 8203 mWifiConfigStore. 8204 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 8205 break; 8206 /* Ignore network disconnect */ 8207 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8208 break; 8209 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8210 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8211 if (DBG) { 8212 loge("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 8213 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 8214 + " debouncing=" + linkDebouncing); 8215 } 8216 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 8217 /* ConnectModeState does the rest of the handling */ 8218 ret = NOT_HANDLED; 8219 break; 8220 case CMD_START_SCAN: 8221 if (!checkOrDeferScanAllowed(message)) { 8222 // The scan request was rescheduled 8223 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8224 return HANDLED; 8225 } 8226 /* Disable background scan temporarily during a regular scan */ 8227 if (mEnableBackgroundScan) { 8228 enableBackgroundScan(false); 8229 } 8230 if (message.arg1 == SCAN_ALARM_SOURCE) { 8231 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8232 // not be processed) and restart the scan 8233 int period = mDisconnectedScanPeriodMs; 8234 if (mP2pConnected.get()) { 8235 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 8236 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8237 mDisconnectedScanPeriodMs); 8238 } 8239 if (!checkAndRestartDelayedScan(message.arg2, 8240 true, period, null, null)) { 8241 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8242 loge("WifiStateMachine Disconnected CMD_START_SCAN source " 8243 + message.arg1 8244 + " " + message.arg2 + ", " + mDelayedScanCounter 8245 + " -> obsolete"); 8246 return HANDLED; 8247 } 8248 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8249 ret = HANDLED; 8250 } else { 8251 ret = NOT_HANDLED; 8252 } 8253 break; 8254 case WifiMonitor.SCAN_RESULTS_EVENT: 8255 /* Re-enable background scan when a pending scan result is received */ 8256 if (mEnableBackgroundScan && mIsScanOngoing) { 8257 enableBackgroundScan(true); 8258 } 8259 /* Handled in parent state */ 8260 ret = NOT_HANDLED; 8261 break; 8262 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 8263 NetworkInfo info = (NetworkInfo) message.obj; 8264 mP2pConnected.set(info.isConnected()); 8265 if (mP2pConnected.get()) { 8266 int defaultInterval = mContext.getResources().getInteger( 8267 R.integer.config_wifi_scan_interval_p2p_connected); 8268 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 8269 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8270 defaultInterval); 8271 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 8272 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8273 if (DBG) log("Turn on scanning after p2p disconnected"); 8274 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8275 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8276 } else { 8277 // If P2P is not connected and there are saved networks, then restart 8278 // scanning at the normal period. This is necessary because scanning might 8279 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 8280 // was set to zero. 8281 startDelayedScan(mDisconnectedScanPeriodMs, null, null); 8282 } 8283 break; 8284 case CMD_RECONNECT: 8285 case CMD_REASSOCIATE: 8286 if (mTemporarilyDisconnectWifi) { 8287 // Drop a third party reconnect/reassociate if STA is 8288 // temporarily disconnected for p2p 8289 break; 8290 } else { 8291 // ConnectModeState handles it 8292 ret = NOT_HANDLED; 8293 } 8294 break; 8295 case CMD_SCREEN_STATE_CHANGED: 8296 handleScreenStateChanged(message.arg1 != 0, 8297 /* startBackgroundScanIfNeeded = */ true); 8298 break; 8299 default: 8300 ret = NOT_HANDLED; 8301 } 8302 return ret; 8303 } 8304 8305 @Override 8306 public void exit() { 8307 /* No need for a background scan upon exit from a disconnected state */ 8308 if (mEnableBackgroundScan) { 8309 enableBackgroundScan(false); 8310 } 8311 setScanAlarm(false); 8312 } 8313 } 8314 8315 class WpsRunningState extends State { 8316 // Tracks the source to provide a reply 8317 private Message mSourceMessage; 8318 @Override 8319 public void enter() { 8320 mSourceMessage = Message.obtain(getCurrentMessage()); 8321 } 8322 @Override 8323 public boolean processMessage(Message message) { 8324 logStateAndMessage(message, getClass().getSimpleName()); 8325 8326 switch (message.what) { 8327 case WifiMonitor.WPS_SUCCESS_EVENT: 8328 // Ignore intermediate success, wait for full connection 8329 break; 8330 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8331 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 8332 mSourceMessage.recycle(); 8333 mSourceMessage = null; 8334 deferMessage(message); 8335 transitionTo(mDisconnectedState); 8336 break; 8337 case WifiMonitor.WPS_OVERLAP_EVENT: 8338 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8339 WifiManager.WPS_OVERLAP_ERROR); 8340 mSourceMessage.recycle(); 8341 mSourceMessage = null; 8342 transitionTo(mDisconnectedState); 8343 break; 8344 case WifiMonitor.WPS_FAIL_EVENT: 8345 // Arg1 has the reason for the failure 8346 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 8347 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 8348 mSourceMessage.recycle(); 8349 mSourceMessage = null; 8350 transitionTo(mDisconnectedState); 8351 } else { 8352 if (DBG) log("Ignore unspecified fail event during WPS connection"); 8353 } 8354 break; 8355 case WifiMonitor.WPS_TIMEOUT_EVENT: 8356 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8357 WifiManager.WPS_TIMED_OUT); 8358 mSourceMessage.recycle(); 8359 mSourceMessage = null; 8360 transitionTo(mDisconnectedState); 8361 break; 8362 case WifiManager.START_WPS: 8363 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 8364 break; 8365 case WifiManager.CANCEL_WPS: 8366 if (mWifiNative.cancelWps()) { 8367 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 8368 } else { 8369 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 8370 } 8371 transitionTo(mDisconnectedState); 8372 break; 8373 /** 8374 * Defer all commands that can cause connections to a different network 8375 * or put the state machine out of connect mode 8376 */ 8377 case CMD_STOP_DRIVER: 8378 case CMD_SET_OPERATIONAL_MODE: 8379 case WifiManager.CONNECT_NETWORK: 8380 case CMD_ENABLE_NETWORK: 8381 case CMD_RECONNECT: 8382 case CMD_REASSOCIATE: 8383 deferMessage(message); 8384 break; 8385 case CMD_AUTO_CONNECT: 8386 case CMD_AUTO_ROAM: 8387 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8388 return HANDLED; 8389 case CMD_START_SCAN: 8390 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8391 return HANDLED; 8392 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8393 if (DBG) log("Network connection lost"); 8394 handleNetworkDisconnect(); 8395 break; 8396 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 8397 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 8398 break; 8399 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 8400 // Disregard auth failure events during WPS connection. The 8401 // EAP sequence is retried several times, and there might be 8402 // failures (especially for wps pin). We will get a WPS_XXX 8403 // event at the end of the sequence anyway. 8404 if (DBG) log("Ignore auth failure during WPS connection"); 8405 break; 8406 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8407 // Throw away supplicant state changes when WPS is running. 8408 // We will start getting supplicant state changes once we get 8409 // a WPS success or failure 8410 break; 8411 default: 8412 return NOT_HANDLED; 8413 } 8414 return HANDLED; 8415 } 8416 8417 @Override 8418 public void exit() { 8419 mWifiConfigStore.enableAllNetworks(); 8420 mWifiConfigStore.loadConfiguredNetworks(); 8421 } 8422 } 8423 8424 class SoftApStartingState extends State { 8425 @Override 8426 public void enter() { 8427 final Message message = getCurrentMessage(); 8428 if (message.what == CMD_START_AP) { 8429 final WifiConfiguration config = (WifiConfiguration) message.obj; 8430 8431 if (config == null) { 8432 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 8433 } else { 8434 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 8435 startSoftApWithConfig(config); 8436 } 8437 } else { 8438 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 8439 } 8440 } 8441 @Override 8442 public boolean processMessage(Message message) { 8443 logStateAndMessage(message, getClass().getSimpleName()); 8444 8445 switch(message.what) { 8446 case CMD_START_SUPPLICANT: 8447 case CMD_STOP_SUPPLICANT: 8448 case CMD_START_AP: 8449 case CMD_STOP_AP: 8450 case CMD_START_DRIVER: 8451 case CMD_STOP_DRIVER: 8452 case CMD_SET_OPERATIONAL_MODE: 8453 case CMD_SET_COUNTRY_CODE: 8454 case CMD_SET_FREQUENCY_BAND: 8455 case CMD_START_PACKET_FILTERING: 8456 case CMD_STOP_PACKET_FILTERING: 8457 case CMD_TETHER_STATE_CHANGE: 8458 deferMessage(message); 8459 break; 8460 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 8461 WifiConfiguration config = (WifiConfiguration) message.obj; 8462 if (config != null) { 8463 startSoftApWithConfig(config); 8464 } else { 8465 loge("Softap config is null!"); 8466 sendMessage(CMD_START_AP_FAILURE); 8467 } 8468 break; 8469 case CMD_START_AP_SUCCESS: 8470 setWifiApState(WIFI_AP_STATE_ENABLED); 8471 transitionTo(mSoftApStartedState); 8472 break; 8473 case CMD_START_AP_FAILURE: 8474 setWifiApState(WIFI_AP_STATE_FAILED); 8475 transitionTo(mInitialState); 8476 break; 8477 default: 8478 return NOT_HANDLED; 8479 } 8480 return HANDLED; 8481 } 8482 } 8483 8484 class SoftApStartedState extends State { 8485 @Override 8486 public boolean processMessage(Message message) { 8487 logStateAndMessage(message, getClass().getSimpleName()); 8488 8489 switch(message.what) { 8490 case CMD_STOP_AP: 8491 if (DBG) log("Stopping Soft AP"); 8492 /* We have not tethered at this point, so we just shutdown soft Ap */ 8493 try { 8494 mNwService.stopAccessPoint(mInterfaceName); 8495 } catch(Exception e) { 8496 loge("Exception in stopAccessPoint()"); 8497 } 8498 setWifiApState(WIFI_AP_STATE_DISABLED); 8499 transitionTo(mInitialState); 8500 break; 8501 case CMD_START_AP: 8502 // Ignore a start on a running access point 8503 break; 8504 // Fail client mode operation when soft AP is enabled 8505 case CMD_START_SUPPLICANT: 8506 loge("Cannot start supplicant with a running soft AP"); 8507 setWifiState(WIFI_STATE_UNKNOWN); 8508 break; 8509 case CMD_TETHER_STATE_CHANGE: 8510 TetherStateChange stateChange = (TetherStateChange) message.obj; 8511 if (startTethering(stateChange.available)) { 8512 transitionTo(mTetheringState); 8513 } 8514 break; 8515 default: 8516 return NOT_HANDLED; 8517 } 8518 return HANDLED; 8519 } 8520 } 8521 8522 class TetheringState extends State { 8523 @Override 8524 public void enter() { 8525 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8526 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8527 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8528 } 8529 @Override 8530 public boolean processMessage(Message message) { 8531 logStateAndMessage(message, getClass().getSimpleName()); 8532 8533 switch(message.what) { 8534 case CMD_TETHER_STATE_CHANGE: 8535 TetherStateChange stateChange = (TetherStateChange) message.obj; 8536 if (isWifiTethered(stateChange.active)) { 8537 transitionTo(mTetheredState); 8538 } 8539 return HANDLED; 8540 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8541 if (message.arg1 == mTetherToken) { 8542 loge("Failed to get tether update, shutdown soft access point"); 8543 transitionTo(mSoftApStartedState); 8544 // Needs to be first thing handled 8545 sendMessageAtFrontOfQueue(CMD_STOP_AP); 8546 } 8547 break; 8548 case CMD_START_SUPPLICANT: 8549 case CMD_STOP_SUPPLICANT: 8550 case CMD_START_AP: 8551 case CMD_STOP_AP: 8552 case CMD_START_DRIVER: 8553 case CMD_STOP_DRIVER: 8554 case CMD_SET_OPERATIONAL_MODE: 8555 case CMD_SET_COUNTRY_CODE: 8556 case CMD_SET_FREQUENCY_BAND: 8557 case CMD_START_PACKET_FILTERING: 8558 case CMD_STOP_PACKET_FILTERING: 8559 deferMessage(message); 8560 break; 8561 default: 8562 return NOT_HANDLED; 8563 } 8564 return HANDLED; 8565 } 8566 } 8567 8568 class TetheredState extends State { 8569 @Override 8570 public boolean processMessage(Message message) { 8571 logStateAndMessage(message, getClass().getSimpleName()); 8572 8573 switch(message.what) { 8574 case CMD_TETHER_STATE_CHANGE: 8575 TetherStateChange stateChange = (TetherStateChange) message.obj; 8576 if (!isWifiTethered(stateChange.active)) { 8577 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 8578 setHostApRunning(null, false); 8579 setHostApRunning(null, true); 8580 } 8581 return HANDLED; 8582 case CMD_STOP_AP: 8583 if (DBG) log("Untethering before stopping AP"); 8584 setWifiApState(WIFI_AP_STATE_DISABLING); 8585 stopTethering(); 8586 transitionTo(mUntetheringState); 8587 // More work to do after untethering 8588 deferMessage(message); 8589 break; 8590 default: 8591 return NOT_HANDLED; 8592 } 8593 return HANDLED; 8594 } 8595 } 8596 8597 class UntetheringState extends State { 8598 @Override 8599 public void enter() { 8600 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8601 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8602 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8603 8604 } 8605 @Override 8606 public boolean processMessage(Message message) { 8607 logStateAndMessage(message, getClass().getSimpleName()); 8608 8609 switch(message.what) { 8610 case CMD_TETHER_STATE_CHANGE: 8611 TetherStateChange stateChange = (TetherStateChange) message.obj; 8612 8613 /* Wait till wifi is untethered */ 8614 if (isWifiTethered(stateChange.active)) break; 8615 8616 transitionTo(mSoftApStartedState); 8617 break; 8618 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8619 if (message.arg1 == mTetherToken) { 8620 loge("Failed to get tether update, force stop access point"); 8621 transitionTo(mSoftApStartedState); 8622 } 8623 break; 8624 case CMD_START_SUPPLICANT: 8625 case CMD_STOP_SUPPLICANT: 8626 case CMD_START_AP: 8627 case CMD_STOP_AP: 8628 case CMD_START_DRIVER: 8629 case CMD_STOP_DRIVER: 8630 case CMD_SET_OPERATIONAL_MODE: 8631 case CMD_SET_COUNTRY_CODE: 8632 case CMD_SET_FREQUENCY_BAND: 8633 case CMD_START_PACKET_FILTERING: 8634 case CMD_STOP_PACKET_FILTERING: 8635 deferMessage(message); 8636 break; 8637 default: 8638 return NOT_HANDLED; 8639 } 8640 return HANDLED; 8641 } 8642 } 8643 8644 //State machine initiated requests can have replyTo set to null indicating 8645 //there are no recepients, we ignore those reply actions 8646 private void replyToMessage(Message msg, int what) { 8647 if (msg.replyTo == null) return; 8648 Message dstMsg = obtainMessageWithArg2(msg); 8649 dstMsg.what = what; 8650 mReplyChannel.replyToMessage(msg, dstMsg); 8651 } 8652 8653 private void replyToMessage(Message msg, int what, int arg1) { 8654 if (msg.replyTo == null) return; 8655 Message dstMsg = obtainMessageWithArg2(msg); 8656 dstMsg.what = what; 8657 dstMsg.arg1 = arg1; 8658 mReplyChannel.replyToMessage(msg, dstMsg); 8659 } 8660 8661 private void replyToMessage(Message msg, int what, Object obj) { 8662 if (msg.replyTo == null) return; 8663 Message dstMsg = obtainMessageWithArg2(msg); 8664 dstMsg.what = what; 8665 dstMsg.obj = obj; 8666 mReplyChannel.replyToMessage(msg, dstMsg); 8667 } 8668 8669 /** 8670 * arg2 on the source message has a unique id that needs to be retained in replies 8671 * to match the request 8672 8673 * see WifiManager for details 8674 */ 8675 private Message obtainMessageWithArg2(Message srcMsg) { 8676 Message msg = Message.obtain(); 8677 msg.arg2 = srcMsg.arg2; 8678 return msg; 8679 } 8680 8681 private static int parseHex(char ch) { 8682 if ('0' <= ch && ch <= '9') { 8683 return ch - '0'; 8684 } else if ('a' <= ch && ch <= 'f') { 8685 return ch - 'a' + 10; 8686 } else if ('A' <= ch && ch <= 'F') { 8687 return ch - 'A' + 10; 8688 } else { 8689 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 8690 } 8691 } 8692 8693 private byte[] parseHex(String hex) { 8694 /* This only works for good input; don't throw bad data at it */ 8695 if (hex == null) { 8696 return new byte[0]; 8697 } 8698 8699 if (hex.length() % 2 != 0) { 8700 throw new NumberFormatException(hex + " is not a valid hex string"); 8701 } 8702 8703 byte[] result = new byte[(hex.length())/2 + 1]; 8704 result[0] = (byte) ((hex.length())/2); 8705 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 8706 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 8707 byte b = (byte) (val & 0xFF); 8708 result[j] = b; 8709 } 8710 8711 return result; 8712 } 8713 8714 private static String makeHex(byte[] bytes) { 8715 StringBuilder sb = new StringBuilder(); 8716 for (byte b : bytes) { 8717 sb.append(String.format("%02x", b)); 8718 } 8719 return sb.toString(); 8720 } 8721 8722 private static String makeHex(byte[] bytes, int from, int len) { 8723 StringBuilder sb = new StringBuilder(); 8724 for (int i = 0; i < len; i++) { 8725 sb.append(String.format("%02x", bytes[from+i])); 8726 } 8727 return sb.toString(); 8728 } 8729 8730 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 8731 8732 int len = array1.length + array2.length + array3.length; 8733 8734 if (array1.length != 0) { 8735 len++; /* add another byte for size */ 8736 } 8737 8738 if (array2.length != 0) { 8739 len++; /* add another byte for size */ 8740 } 8741 8742 if (array3.length != 0) { 8743 len++; /* add another byte for size */ 8744 } 8745 8746 byte[] result = new byte[len]; 8747 8748 int index = 0; 8749 if (array1.length != 0) { 8750 result[index] = (byte) (array1.length & 0xFF); 8751 index++; 8752 for (byte b : array1) { 8753 result[index] = b; 8754 index++; 8755 } 8756 } 8757 8758 if (array2.length != 0) { 8759 result[index] = (byte) (array2.length & 0xFF); 8760 index++; 8761 for (byte b : array2) { 8762 result[index] = b; 8763 index++; 8764 } 8765 } 8766 8767 if (array3.length != 0) { 8768 result[index] = (byte) (array3.length & 0xFF); 8769 index++; 8770 for (byte b : array3) { 8771 result[index] = b; 8772 index++; 8773 } 8774 } 8775 return result; 8776 } 8777 8778 private static byte[] concatHex(byte[] array1, byte[] array2) { 8779 8780 int len = array1.length + array2.length; 8781 8782 byte[] result = new byte[len]; 8783 8784 int index = 0; 8785 if (array1.length != 0) { 8786 for (byte b : array1) { 8787 result[index] = b; 8788 index++; 8789 } 8790 } 8791 8792 if (array2.length != 0) { 8793 for (byte b : array2) { 8794 result[index] = b; 8795 index++; 8796 } 8797 } 8798 8799 return result; 8800 } 8801 8802 void handleGsmAuthRequest(SimAuthRequestData requestData) { 8803 if (targetWificonfiguration == null 8804 || targetWificonfiguration.networkId == requestData.networkId) { 8805 logd("id matches targetWifiConfiguration"); 8806 } else { 8807 logd("id does not match targetWifiConfiguration"); 8808 return; 8809 } 8810 8811 TelephonyManager tm = (TelephonyManager) 8812 mContext.getSystemService(Context.TELEPHONY_SERVICE); 8813 8814 if (tm != null) { 8815 StringBuilder sb = new StringBuilder(); 8816 for (String challenge : requestData.data) { 8817 8818 if (challenge == null || challenge.isEmpty()) 8819 continue; 8820 logd("RAND = " + challenge); 8821 8822 byte[] rand = null; 8823 try { 8824 rand = parseHex(challenge); 8825 } catch (NumberFormatException e) { 8826 loge("malformed challenge"); 8827 continue; 8828 } 8829 8830 String base64Challenge = android.util.Base64.encodeToString( 8831 rand, android.util.Base64.NO_WRAP); 8832 /* 8833 * First, try with appType = 2 => USIM according to 8834 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 8835 */ 8836 int appType = 2; 8837 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 8838 if (tmResponse == null) { 8839 /* Then, in case of failure, issue may be due to sim type, retry as a simple sim 8840 * appType = 1 => SIM 8841 */ 8842 appType = 1; 8843 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 8844 } 8845 logv("Raw Response - " + tmResponse); 8846 8847 if (tmResponse != null && tmResponse.length() > 4) { 8848 byte[] result = android.util.Base64.decode(tmResponse, 8849 android.util.Base64.DEFAULT); 8850 logv("Hex Response -" + makeHex(result)); 8851 int sres_len = result[0]; 8852 String sres = makeHex(result, 1, sres_len); 8853 int kc_offset = 1+sres_len; 8854 int kc_len = result[kc_offset]; 8855 String kc = makeHex(result, 1+kc_offset, kc_len); 8856 sb.append(":" + kc + ":" + sres); 8857 logv("kc:" + kc + " sres:" + sres); 8858 } else { 8859 loge("bad response - " + tmResponse); 8860 } 8861 } 8862 8863 String response = sb.toString(); 8864 logv("Supplicant Response -" + response); 8865 mWifiNative.simAuthResponse(requestData.networkId, "GSM-AUTH", response); 8866 } else { 8867 loge("could not get telephony manager"); 8868 } 8869 } 8870 8871 void handle3GAuthRequest(SimAuthRequestData requestData) { 8872 StringBuilder sb = new StringBuilder(); 8873 byte[] rand = null; 8874 byte[] authn = null; 8875 String res_type = "UMTS-AUTH"; 8876 8877 if (targetWificonfiguration == null 8878 || targetWificonfiguration.networkId == requestData.networkId) { 8879 logd("id matches targetWifiConfiguration"); 8880 } else { 8881 logd("id does not match targetWifiConfiguration"); 8882 return; 8883 } 8884 if (requestData.data.length == 2) { 8885 try { 8886 rand = parseHex(requestData.data[0]); 8887 authn = parseHex(requestData.data[1]); 8888 } catch (NumberFormatException e) { 8889 loge("malformed challenge"); 8890 } 8891 } else { 8892 loge("malformed challenge"); 8893 } 8894 8895 String tmResponse = ""; 8896 if (rand != null && authn != null) { 8897 String base64Challenge = android.util.Base64.encodeToString( 8898 concatHex(rand,authn), android.util.Base64.NO_WRAP); 8899 8900 TelephonyManager tm = (TelephonyManager) 8901 mContext.getSystemService(Context.TELEPHONY_SERVICE); 8902 if (tm != null) { 8903 int appType = 2; // 2 => USIM 8904 tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 8905 logv("Raw Response - " + tmResponse); 8906 } else { 8907 loge("could not get telephony manager"); 8908 } 8909 } 8910 8911 if (tmResponse != null && tmResponse.length() > 4) { 8912 byte[] result = android.util.Base64.decode(tmResponse, 8913 android.util.Base64.DEFAULT); 8914 loge("Hex Response - " + makeHex(result)); 8915 byte tag = result[0]; 8916 if (tag == (byte) 0xdb) { 8917 logv("successful 3G authentication "); 8918 int res_len = result[1]; 8919 String res = makeHex(result, 2, res_len); 8920 int ck_len = result[res_len + 2]; 8921 String ck = makeHex(result, res_len + 3, ck_len); 8922 int ik_len = result[res_len + ck_len + 3]; 8923 String ik = makeHex(result, res_len + ck_len + 4, ik_len); 8924 sb.append(":" + ik + ":" + ck + ":" + res); 8925 logv("ik:" + ik + "ck:" + ck + " res:" + res); 8926 } else if (tag == (byte) 0xdc) { 8927 loge("synchronisation failure"); 8928 int auts_len = result[1]; 8929 String auts = makeHex(result, 2, auts_len); 8930 res_type = "UMTS-AUTS"; 8931 sb.append(":" + auts); 8932 logv("auts:" + auts); 8933 } else { 8934 loge("bad response - unknown tag = " + tag); 8935 return; 8936 } 8937 } else { 8938 loge("bad response - " + tmResponse); 8939 return; 8940 } 8941 8942 String response = sb.toString(); 8943 logv("Supplicant Response -" + response); 8944 mWifiNative.simAuthResponse(requestData.networkId, res_type, response); 8945 } 8946} 8947