WifiStateMachine.java revision 8433fd1fc75809033bdd207e80a044b1badfa7b7
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.DhcpStateMachine; 48import android.net.InterfaceConfiguration; 49import android.net.LinkAddress; 50import android.net.LinkProperties; 51import android.net.NetworkAgent; 52import android.net.NetworkCapabilities; 53import android.net.NetworkFactory; 54import android.net.NetworkInfo; 55import android.net.NetworkInfo.DetailedState; 56import android.net.NetworkRequest; 57import android.net.NetworkUtils; 58import android.net.RouteInfo; 59import android.net.StaticIpConfiguration; 60import android.net.TrafficStats; 61import android.net.wifi.BatchedScanResult; 62import android.net.wifi.BatchedScanSettings; 63import android.net.wifi.RssiPacketCountInfo; 64import android.net.wifi.ScanResult; 65import android.net.wifi.ScanSettings; 66import android.net.wifi.SupplicantState; 67import android.net.wifi.WifiChannel; 68import android.net.wifi.WifiConfiguration; 69import android.net.wifi.WifiConnectionStatistics; 70import android.net.wifi.WifiEnterpriseConfig; 71import android.net.wifi.WifiInfo; 72import android.net.wifi.WifiLinkLayerStats; 73import android.net.wifi.WifiManager; 74import android.net.wifi.WifiSsid; 75import android.net.wifi.WpsInfo; 76import android.net.wifi.WpsResult; 77import android.net.wifi.WpsResult.Status; 78import android.net.wifi.p2p.IWifiP2pManager; 79import android.os.BatteryStats; 80import android.os.Bundle; 81import android.os.IBinder; 82import android.os.INetworkManagementService; 83import android.os.Looper; 84import android.os.Message; 85import android.os.Messenger; 86import android.os.PowerManager; 87import android.os.Process; 88import android.os.RemoteException; 89import android.os.ServiceManager; 90import android.os.SystemClock; 91import android.os.SystemProperties; 92import android.os.UserHandle; 93import android.os.WorkSource; 94import android.provider.Settings; 95import android.telephony.TelephonyManager; 96import android.text.TextUtils; 97import android.util.Log; 98import android.util.LruCache; 99 100import com.android.internal.R; 101import com.android.internal.app.IBatteryStats; 102import com.android.internal.util.AsyncChannel; 103import com.android.internal.util.Protocol; 104import com.android.internal.util.State; 105import com.android.internal.util.StateMachine; 106import com.android.server.net.NetlinkTracker; 107import com.android.server.wifi.hotspot2.NetworkDetail; 108import com.android.server.wifi.hotspot2.PasspointMatch; 109import com.android.server.wifi.hotspot2.SelectionManager; 110import com.android.server.wifi.hotspot2.SupplicantBridge; 111import com.android.server.wifi.hotspot2.pps.HomeSP; 112import com.android.server.wifi.p2p.WifiP2pServiceImpl; 113 114import java.io.BufferedReader; 115import java.io.File; 116import java.io.FileDescriptor; 117import java.io.FileNotFoundException; 118import java.io.FileReader; 119import java.io.IOException; 120import java.io.PrintWriter; 121import java.net.Inet4Address; 122import java.net.InetAddress; 123import java.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.Map; 130import java.util.Queue; 131import java.util.Random; 132import java.util.concurrent.atomic.AtomicBoolean; 133import java.util.concurrent.atomic.AtomicInteger; 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 boolean DBG = false; 151 private static boolean VDBG = false; 152 private static boolean VVDBG = false; 153 private static boolean mLogMessages = false; 154 private static final String TAG = "WifiStateMachine"; 155 156 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 157 158 private static final String GOOGLE_OUI = "DA-A1-19"; 159 160 /* temporary debug flag - best network selection development */ 161 private static boolean PDBG = false; 162 163 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 164 * the corresponding BSSID. 165 */ 166 private boolean didBlackListBSSID = false; 167 168 /** 169 * Log with error attribute 170 * 171 * @param s is string log 172 */ 173 protected void loge(String s) { 174 Log.e(getName(), s); 175 } 176 protected void log(String s) {; 177 Log.e(getName(), s); 178 } 179 180 private WifiMonitor mWifiMonitor; 181 private WifiNative mWifiNative; 182 private WifiConfigStore mWifiConfigStore; 183 private WifiAutoJoinController mWifiAutoJoinController; 184 private INetworkManagementService mNwService; 185 private ConnectivityManager mCm; 186 187 private final boolean mP2pSupported; 188 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 189 private boolean mTemporarilyDisconnectWifi = false; 190 private final String mPrimaryDeviceType; 191 192 /* Scan results handling */ 193 private List<ScanDetail> mScanResults = new ArrayList<>(); 194 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 195 private static final int SCAN_RESULT_CACHE_SIZE = 160; 196 private final LruCache<NetworkDetail, ScanDetail> mScanResultCache; 197 // For debug, number of known scan results that were found as part of last scan result event, 198 // as well the number of scans results returned by the supplicant with that message 199 private int mNumScanResultsKnown; 200 private int mNumScanResultsReturned; 201 202 /* Batch scan results */ 203 private final List<BatchedScanResult> mBatchedScanResults = 204 new ArrayList<BatchedScanResult>(); 205 private int mBatchedScanOwnerUid = UNKNOWN_SCAN_SOURCE; 206 private int mExpectedBatchedScans = 0; 207 private long mBatchedScanMinPollTime = 0; 208 209 private boolean mScreenOn = false; 210 211 /* Chipset supports background scan */ 212 private final boolean mBackgroundScanSupported; 213 214 private String mInterfaceName; 215 /* Tethering interface could be separate from wlan interface */ 216 private String mTetherInterfaceName; 217 218 private int mLastSignalLevel = -1; 219 private String mLastBssid; 220 private int mLastNetworkId; // The network Id we successfully joined 221 private boolean linkDebouncing = false; 222 223 // Testing various network disconnect cases by sending lots of spurious 224 // disconnect to supplicant 225 private boolean testNetworkDisconnect = false; 226 227 private boolean mEnableRssiPolling = false; 228 private boolean mEnableBackgroundScan = false; 229 private int mRssiPollToken = 0; 230 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 231 * In CONNECT_MODE, the STA can scan and connect to an access point 232 * In SCAN_ONLY_MODE, the STA can only scan for access points 233 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 234 */ 235 private int mOperationalMode = CONNECT_MODE; 236 private boolean mIsScanOngoing = false; 237 private boolean mIsFullScanOngoing = false; 238 private boolean mSendScanResultsBroadcast = false; 239 240 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 241 private WorkSource mScanWorkSource = null; 242 private static final int UNKNOWN_SCAN_SOURCE = -1; 243 private static final int SCAN_ALARM_SOURCE = -2; 244 private static final int ADD_OR_UPDATE_SOURCE = -3; 245 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 246 private static final int ENABLE_WIFI = -5; 247 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 248 249 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 250 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 251 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 252 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 253 254 private static final String BATCHED_SETTING = "batched_settings"; 255 private static final String BATCHED_WORKSOURCE = "batched_worksource"; 256 257 /* Tracks if state machine has received any screen state change broadcast yet. 258 * We can miss one of these at boot. 259 */ 260 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 261 262 private boolean mBluetoothConnectionActive = false; 263 264 private PowerManager.WakeLock mSuspendWakeLock; 265 266 /** 267 * Interval in milliseconds between polling for RSSI 268 * and linkspeed information 269 */ 270 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 271 272 /** 273 * Interval in milliseconds between receiving a disconnect event 274 * while connected to a good AP, and handling the disconnect proper 275 */ 276 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 277 278 /** 279 * Delay between supplicant restarts upon failure to establish connection 280 */ 281 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 282 283 /** 284 * Number of times we attempt to restart supplicant 285 */ 286 private static final int SUPPLICANT_RESTART_TRIES = 5; 287 288 private int mSupplicantRestartCount = 0; 289 /* Tracks sequence number on stop failure message */ 290 private int mSupplicantStopFailureToken = 0; 291 292 /** 293 * Tether state change notification time out 294 */ 295 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 296 297 /* Tracks sequence number on a tether notification time out */ 298 private int mTetherToken = 0; 299 300 /** 301 * Driver start time out. 302 */ 303 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 304 305 /* Tracks sequence number on a driver time out */ 306 private int mDriverStartToken = 0; 307 308 /** 309 * The link properties of the wifi interface. 310 * Do not modify this directly; use updateLinkProperties instead. 311 */ 312 private LinkProperties mLinkProperties; 313 314 /* Tracks sequence number on a periodic scan message */ 315 private int mPeriodicScanToken = 0; 316 317 // Wakelock held during wifi start/stop and driver load/unload 318 private PowerManager.WakeLock mWakeLock; 319 320 private Context mContext; 321 322 private final Object mDhcpResultsLock = new Object(); 323 private DhcpResults mDhcpResults; 324 private WifiInfo mWifiInfo; 325 private NetworkInfo mNetworkInfo; 326 private NetworkCapabilities mNetworkCapabilities; 327 private SupplicantStateTracker mSupplicantStateTracker; 328 private DhcpStateMachine mDhcpStateMachine; 329 private boolean mDhcpActive = false; 330 331 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 332 333 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 334 335 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 336 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 337 338 // Roaming failure count 339 private int mRoamFailCount = 0; 340 341 // This is the BSSID we are trying to associate to, it can be set to "any" 342 // if we havent selected a BSSID for joining. 343 // if we havent selected a BSSID for joining. 344 // The BSSID we are associated to is found in mWifiInfo 345 private String mTargetRoamBSSID = "any"; 346 347 private long mLastDriverRoamAttempt = 0; 348 349 private WifiConfiguration targetWificonfiguration = null; 350 351 // Used as debug to indicate which configuration last was saved 352 private WifiConfiguration lastSavedConfigurationAttempt = null; 353 354 // Used as debug to indicate which configuration last was removed 355 private WifiConfiguration lastForgetConfigurationAttempt = null; 356 357 //Random used by softAP channel Selection 358 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 359 boolean isRoaming() { 360 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 361 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 362 } 363 364 public void autoRoamSetBSSID(int netId, String bssid) { 365 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 366 } 367 368 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 369 boolean ret = true; 370 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 371 if (bssid == null) bssid = "any"; 372 if (config == null) return false; // Nothing to do 373 374 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 375 return false; // We didnt change anything 376 } 377 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 378 // Changing to ANY 379 if (!mWifiConfigStore.roamOnAny) { 380 ret = false; // Nothing to do 381 } 382 } 383 if (VDBG) { 384 loge("autoRoamSetBSSID " + bssid 385 + " key=" + config.configKey()); 386 } 387 config.autoJoinBSSID = bssid; 388 mTargetRoamBSSID = bssid; 389 mWifiConfigStore.saveWifiConfigBSSID(config); 390 return ret; 391 } 392 393 /** 394 * Subset of link properties coming from netlink. 395 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 396 * and domains obtained from router advertisements (RFC 6106). 397 */ 398 private NetlinkTracker mNetlinkTracker; 399 400 private AlarmManager mAlarmManager; 401 private PendingIntent mScanIntent; 402 private PendingIntent mDriverStopIntent; 403 private PendingIntent mBatchedScanIntervalIntent; 404 405 /* Tracks current frequency mode */ 406 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 407 408 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 409 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 410 411 // Channel for sending replies. 412 private AsyncChannel mReplyChannel = new AsyncChannel(); 413 414 private WifiP2pServiceImpl mWifiP2pServiceImpl; 415 416 // Used to initiate a connection with WifiP2pService 417 private AsyncChannel mWifiP2pChannel; 418 private AsyncChannel mWifiApConfigChannel; 419 420 private int mConnectionRequests = 0; 421 private WifiNetworkFactory mNetworkFactory; 422 private WifiNetworkAgent mNetworkAgent; 423 424 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 425 // We should really persist that into the networkHistory.txt file, and read it back when 426 // WifiStateMachine starts up 427 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 428 429 // Used to filter out requests we couldn't possibly satisfy. 430 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 431 432 /* The base for wifi message types */ 433 static final int BASE = Protocol.BASE_WIFI; 434 /* Start the supplicant */ 435 static final int CMD_START_SUPPLICANT = BASE + 11; 436 /* Stop the supplicant */ 437 static final int CMD_STOP_SUPPLICANT = BASE + 12; 438 /* Start the driver */ 439 static final int CMD_START_DRIVER = BASE + 13; 440 /* Stop the driver */ 441 static final int CMD_STOP_DRIVER = BASE + 14; 442 /* Indicates Static IP succeeded */ 443 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 444 /* Indicates Static IP failed */ 445 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 446 /* Indicates supplicant stop failed */ 447 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 448 /* Delayed stop to avoid shutting down driver too quick*/ 449 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 450 /* A delayed message sent to start driver when it fail to come up */ 451 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 452 453 /* Start the soft access point */ 454 static final int CMD_START_AP = BASE + 21; 455 /* Indicates soft ap start succeeded */ 456 static final int CMD_START_AP_SUCCESS = BASE + 22; 457 /* Indicates soft ap start failed */ 458 static final int CMD_START_AP_FAILURE = BASE + 23; 459 /* Stop the soft access point */ 460 static final int CMD_STOP_AP = BASE + 24; 461 /* Set the soft access point configuration */ 462 static final int CMD_SET_AP_CONFIG = BASE + 25; 463 /* Soft access point configuration set completed */ 464 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 465 /* Request the soft access point configuration */ 466 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 467 /* Response to access point configuration request */ 468 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 469 /* Invoked when getting a tether state change notification */ 470 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 471 /* A delayed message sent to indicate tether state change failed to arrive */ 472 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 473 474 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 475 476 /* Supplicant commands */ 477 /* Is supplicant alive ? */ 478 static final int CMD_PING_SUPPLICANT = BASE + 51; 479 /* Add/update a network configuration */ 480 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 481 /* Delete a network */ 482 static final int CMD_REMOVE_NETWORK = BASE + 53; 483 /* Enable a network. The device will attempt a connection to the given network. */ 484 static final int CMD_ENABLE_NETWORK = BASE + 54; 485 /* Enable all networks */ 486 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 487 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 488 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 489 /* Clear the blacklist network list */ 490 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 491 /* Save configuration */ 492 static final int CMD_SAVE_CONFIG = BASE + 58; 493 /* Get configured networks */ 494 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 495 /* Get available frequencies */ 496 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 497 /* Get adaptors */ 498 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 499 /* Get configured networks with real preSharedKey */ 500 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 501 /* Get Link Layer Stats thru HAL */ 502 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 503 /* Supplicant commands after driver start*/ 504 /* Initiate a scan */ 505 static final int CMD_START_SCAN = BASE + 71; 506 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 507 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 508 /* Disconnect from a network */ 509 static final int CMD_DISCONNECT = BASE + 73; 510 /* Reconnect to a network */ 511 static final int CMD_RECONNECT = BASE + 74; 512 /* Reassociate to a network */ 513 static final int CMD_REASSOCIATE = BASE + 75; 514 /* Get Connection Statistis */ 515 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 516 517 /* Controls suspend mode optimizations 518 * 519 * When high perf mode is enabled, suspend mode optimizations are disabled 520 * 521 * When high perf mode is disabled, suspend mode optimizations are enabled 522 * 523 * Suspend mode optimizations include: 524 * - packet filtering 525 * - turn off roaming 526 * - DTIM wake up settings 527 */ 528 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 529 /* Set the country code */ 530 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 531 /* Enables RSSI poll */ 532 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 533 /* RSSI poll */ 534 static final int CMD_RSSI_POLL = BASE + 83; 535 /* Set up packet filtering */ 536 static final int CMD_START_PACKET_FILTERING = BASE + 84; 537 /* Clear packet filter */ 538 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 539 /* Enable suspend mode optimizations in the driver */ 540 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 541 /* Delayed NETWORK_DISCONNECT */ 542 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 543 /* When there are no saved networks, we do a periodic scan to notify user of 544 * an open network */ 545 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 546 /* Test network Disconnection NETWORK_DISCONNECT */ 547 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 548 private int testNetworkDisconnectCounter = 0; 549 550 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 551 static final int MULTICAST_V6 = 1; 552 static final int MULTICAST_V4 = 0; 553 554 /* Set the frequency band */ 555 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 556 /* Enable TDLS on a specific MAC address */ 557 static final int CMD_ENABLE_TDLS = BASE + 92; 558 /* DHCP/IP configuration watchdog */ 559 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 560 561 /** 562 * Make this timer 40 seconds, which is about the normal DHCP timeout. 563 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 564 * for more than 30 seconds. 565 */ 566 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 567 568 int obtainingIpWatchdogCount = 0; 569 570 /* Commands from/to the SupplicantStateTracker */ 571 /* Reset the supplicant state tracker */ 572 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 573 574 575 /** 576 * Watchdog for protecting against b/16823537 577 * Leave time for 4-ways handshake to succeed 578 */ 579 static final int ROAM_GUARD_TIMER_MSEC = 15000; 580 581 int roamWatchdogCount = 0; 582 /* Roam state watchdog */ 583 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 584 /* Screen change intent handling */ 585 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 586 587 int disconnectingWatchdogCount = 0; 588 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 589 590 /* Disconnecting state watchdog */ 591 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 592 593 /* Disable an ephemeral network */ 594 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 595 596 /* P2p commands */ 597 /* We are ok with no response here since we wont do much with it anyway */ 598 public static final int CMD_ENABLE_P2P = BASE + 131; 599 /* In order to shut down supplicant cleanly, we wait till p2p has 600 * been disabled */ 601 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 602 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 603 604 public static final int CMD_BOOT_COMPLETED = BASE + 134; 605 606 /* change the batch scan settings. 607 * arg1 = responsible UID 608 * arg2 = csph (channel scans per hour) 609 * obj = bundle with the new settings and the optional worksource 610 */ 611 public static final int CMD_SET_BATCHED_SCAN = BASE + 135; 612 public static final int CMD_START_NEXT_BATCHED_SCAN = BASE + 136; 613 public static final int CMD_POLL_BATCHED_SCAN = BASE + 137; 614 615 /* We now have a valid IP configuration. */ 616 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 617 /* We no longer have a valid IP configuration. */ 618 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 619 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 620 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 621 622 /* Supplicant is trying to associate to a given BSSID */ 623 static final int CMD_TARGET_BSSID = BASE + 141; 624 625 /* Reload all networks and reconnect */ 626 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 627 628 static final int CMD_AUTO_CONNECT = BASE + 143; 629 630 static final int network_status_unwanted_disconnect = 0; 631 static final int network_status_unwanted_disable_autojoin = 1; 632 633 static final int CMD_UNWANTED_NETWORK = BASE + 144; 634 635 static final int CMD_AUTO_ROAM = BASE + 145; 636 637 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 638 639 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 640 641 static final int CMD_NETWORK_STATUS = BASE + 148; 642 643 /* Wifi state machine modes of operation */ 644 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 645 public static final int CONNECT_MODE = 1; 646 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 647 public static final int SCAN_ONLY_MODE = 2; 648 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 649 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 650 651 private static final int SUCCESS = 1; 652 private static final int FAILURE = -1; 653 654 /* Tracks if suspend optimizations need to be disabled by DHCP, 655 * screen or due to high perf mode. 656 * When any of them needs to disable it, we keep the suspend optimizations 657 * disabled 658 */ 659 private int mSuspendOptNeedsDisabled = 0; 660 661 private static final int SUSPEND_DUE_TO_DHCP = 1; 662 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1<<1; 663 private static final int SUSPEND_DUE_TO_SCREEN = 1<<2; 664 665 /* Tracks if user has enabled suspend optimizations through settings */ 666 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 667 668 /** 669 * Default framework scan interval in milliseconds. This is used in the scenario in which 670 * wifi chipset does not support background scanning to set up a 671 * periodic wake up scan so that the device can connect to a new access 672 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 673 * override this. 674 */ 675 private final int mDefaultFrameworkScanIntervalMs; 676 677 private int mDisconnectedScanPeriodMs = 10000; 678 679 /** 680 * Supplicant scan interval in milliseconds. 681 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 682 * from the default config if the setting is not set 683 */ 684 private long mSupplicantScanIntervalMs; 685 686 /** 687 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 688 */ 689 private long lastFullBandConnectedTimeMilli; 690 691 /** 692 * time interval to the next full band scan we will perform for 693 * autojoin while connected with screen lit 694 */ 695 private long fullBandConnectedTimeIntervalMilli; 696 697 /** 698 * max time interval to the next full band scan we will perform for 699 * autojoin while connected with screen lit 700 * Max time is 5 minutes 701 */ 702 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 703 704 /** 705 * Minimum time interval between enabling all networks. 706 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 707 * due to enabling every time. We add a threshold to avoid this. 708 */ 709 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 710 private long mLastEnableAllNetworksTime; 711 712 int mRunningBeaconCount = 0; 713 714 /** 715 * Starting and shutting down driver too quick causes problems leading to driver 716 * being in a bad state. Delay driver stop. 717 */ 718 private final int mDriverStopDelayMs; 719 private int mDelayedStopCounter; 720 private boolean mInDelayedStop = false; 721 722 // there is a delay between StateMachine change country code and Supplicant change country code 723 // here save the current WifiStateMachine set country code 724 private volatile String mSetCountryCode = null; 725 726 // Supplicant doesn't like setting the same country code multiple times (it may drop 727 // currently connected network), so we save the current device set country code here to avoid 728 // redundency 729 private String mDriverSetCountryCode = null; 730 731 /* Default parent state */ 732 private State mDefaultState = new DefaultState(); 733 /* Temporary initial state */ 734 private State mInitialState = new InitialState(); 735 /* Driver loaded, waiting for supplicant to start */ 736 private State mSupplicantStartingState = new SupplicantStartingState(); 737 /* Driver loaded and supplicant ready */ 738 private State mSupplicantStartedState = new SupplicantStartedState(); 739 /* Waiting for supplicant to stop and monitor to exit */ 740 private State mSupplicantStoppingState = new SupplicantStoppingState(); 741 /* Driver start issued, waiting for completed event */ 742 private State mDriverStartingState = new DriverStartingState(); 743 /* Driver started */ 744 private State mDriverStartedState = new DriverStartedState(); 745 /* Wait until p2p is disabled 746 * This is a special state which is entered right after we exit out of DriverStartedState 747 * before transitioning to another state. 748 */ 749 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 750 /* Driver stopping */ 751 private State mDriverStoppingState = new DriverStoppingState(); 752 /* Driver stopped */ 753 private State mDriverStoppedState = new DriverStoppedState(); 754 /* Scan for networks, no connection will be established */ 755 private State mScanModeState = new ScanModeState(); 756 /* Connecting to an access point */ 757 private State mConnectModeState = new ConnectModeState(); 758 /* Connected at 802.11 (L2) level */ 759 private State mL2ConnectedState = new L2ConnectedState(); 760 /* fetching IP after connection to access point (assoc+auth complete) */ 761 private State mObtainingIpState = new ObtainingIpState(); 762 /* Waiting for link quality verification to be complete */ 763 private State mVerifyingLinkState = new VerifyingLinkState(); 764 /* Connected with IP addr */ 765 private State mConnectedState = new ConnectedState(); 766 /* Roaming */ 767 private State mRoamingState = new RoamingState(); 768 /* disconnect issued, waiting for network disconnect confirmation */ 769 private State mDisconnectingState = new DisconnectingState(); 770 /* Network is not connected, supplicant assoc+auth is not complete */ 771 private State mDisconnectedState = new DisconnectedState(); 772 /* Waiting for WPS to be completed*/ 773 private State mWpsRunningState = new WpsRunningState(); 774 775 /* Soft ap is starting up */ 776 private State mSoftApStartingState = new SoftApStartingState(); 777 /* Soft ap is running */ 778 private State mSoftApStartedState = new SoftApStartedState(); 779 /* Soft ap is running and we are waiting for tether notification */ 780 private State mTetheringState = new TetheringState(); 781 /* Soft ap is running and we are tethered through connectivity service */ 782 private State mTetheredState = new TetheredState(); 783 /* Waiting for untether confirmation before stopping soft Ap */ 784 private State mUntetheringState = new UntetheringState(); 785 786 private class TetherStateChange { 787 ArrayList<String> available; 788 ArrayList<String> active; 789 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 790 available = av; 791 active = ac; 792 } 793 } 794 795 public static class SimAuthRequestData { 796 int networkId; 797 int protocol; 798 String ssid; 799 String[] challenges; 800 } 801 802 public static class SimAuthResponseData { 803 int id; 804 String Kc1; 805 String SRES1; 806 String Kc2; 807 String SRES2; 808 String Kc3; 809 String SRES3; 810 } 811 812 /** 813 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 814 * {@link WifiManager#WIFI_STATE_DISABLING}, 815 * {@link WifiManager#WIFI_STATE_ENABLED}, 816 * {@link WifiManager#WIFI_STATE_ENABLING}, 817 * {@link WifiManager#WIFI_STATE_UNKNOWN} 818 * 819 */ 820 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 821 822 /** 823 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 824 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 825 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 826 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 827 * {@link WifiManager#WIFI_AP_STATE_FAILED} 828 * 829 */ 830 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 831 832 private static final int SCAN_REQUEST = 0; 833 private static final String ACTION_START_SCAN = 834 "com.android.server.WifiManager.action.START_SCAN"; 835 836 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 837 private static final int DRIVER_STOP_REQUEST = 0; 838 private static final String ACTION_DELAYED_DRIVER_STOP = 839 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 840 841 private static final String ACTION_REFRESH_BATCHED_SCAN = 842 "com.android.server.WifiManager.action.REFRESH_BATCHED_SCAN"; 843 /** 844 * Keep track of whether WIFI is running. 845 */ 846 private boolean mIsRunning = false; 847 848 /** 849 * Keep track of whether we last told the battery stats we had started. 850 */ 851 private boolean mReportedRunning = false; 852 853 /** 854 * Most recently set source of starting WIFI. 855 */ 856 private final WorkSource mRunningWifiUids = new WorkSource(); 857 858 /** 859 * The last reported UIDs that were responsible for starting WIFI. 860 */ 861 private final WorkSource mLastRunningWifiUids = new WorkSource(); 862 863 private final IBatteryStats mBatteryStats; 864 865 private BatchedScanSettings mBatchedScanSettings = null; 866 867 private final SelectionManager mSelectionManager; 868 869 /** 870 * Track the worksource/cost of the current settings and track what's been noted 871 * to the battery stats, so we can mark the end of the previous when changing. 872 */ 873 private WorkSource mBatchedScanWorkSource = null; 874 private int mBatchedScanCsph = 0; 875 private WorkSource mNotedBatchedScanWorkSource = null; 876 private int mNotedBatchedScanCsph = 0; 877 878 private String mTcpBufferSizes = null; 879 880 // Used for debug and stats gathering 881 private static int sScanAlarmIntentCount = 0; 882 883 final static int frameworkMinScanIntervalSaneValue = 10000; 884 885 public WifiStateMachine(Context context, String wlanInterface, 886 WifiTrafficPoller trafficPoller){ 887 super("WifiStateMachine"); 888 mContext = context; 889 mSetCountryCode = Settings.Global.getString( 890 mContext.getContentResolver(), Settings.Global.WIFI_COUNTRY_CODE); 891 mInterfaceName = wlanInterface; 892 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 893 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 894 BatteryStats.SERVICE_NAME)); 895 896 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 897 mNwService = INetworkManagementService.Stub.asInterface(b); 898 899 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 900 PackageManager.FEATURE_WIFI_DIRECT); 901 902 mWifiNative = new WifiNative(mInterfaceName); 903 mWifiConfigStore = new WifiConfigStore(context, mWifiNative); 904 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 905 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 906 mWifiMonitor = new WifiMonitor(this, mWifiNative); 907 mWifiInfo = new WifiInfo(); 908 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 909 getHandler()); 910 mLinkProperties = new LinkProperties(); 911 912 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 913 mWifiP2pServiceImpl = (WifiP2pServiceImpl)IWifiP2pManager.Stub.asInterface(s1); 914 915 mNetworkInfo.setIsAvailable(false); 916 mLastBssid = null; 917 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 918 mLastSignalLevel = -1; 919 920 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 921 public void update() { 922 sendMessage(CMD_UPDATE_LINKPROPERTIES); 923 } 924 }); 925 try { 926 mNwService.registerObserver(mNetlinkTracker); 927 } catch (RemoteException e) { 928 loge("Couldn't register netlink tracker: " + e.toString()); 929 } 930 931 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 932 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 933 mBatchedScanIntervalIntent = getPrivateBroadcast(ACTION_REFRESH_BATCHED_SCAN, 0); 934 935 // Make sure the interval is not configured less than 10 seconds 936 int period = mContext.getResources().getInteger( 937 R.integer.config_wifi_framework_scan_interval); 938 if (period < frameworkMinScanIntervalSaneValue) { 939 period = frameworkMinScanIntervalSaneValue; 940 } 941 mDefaultFrameworkScanIntervalMs = period; 942 mDriverStopDelayMs = mContext.getResources().getInteger( 943 R.integer.config_wifi_driver_stop_delay); 944 945 mBackgroundScanSupported = mContext.getResources().getBoolean( 946 R.bool.config_wifi_background_scan_support); 947 948 mPrimaryDeviceType = mContext.getResources().getString( 949 R.string.config_wifi_p2p_device_type); 950 951 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 952 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 953 954 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 955 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 956 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 957 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 958 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 959 // TODO - needs to be a bit more dynamic 960 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 961 962 mContext.registerReceiver( 963 new BroadcastReceiver() { 964 @Override 965 public void onReceive(Context context, Intent intent) { 966 ArrayList<String> available = intent.getStringArrayListExtra( 967 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 968 ArrayList<String> active = intent.getStringArrayListExtra( 969 ConnectivityManager.EXTRA_ACTIVE_TETHER); 970 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 971 } 972 },new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 973 974 mContext.registerReceiver( 975 new BroadcastReceiver() { 976 @Override 977 public void onReceive(Context context, Intent intent) { 978 sScanAlarmIntentCount++; // Used for debug only 979 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 980 if (VDBG) 981 loge("WiFiStateMachine SCAN ALARM -> " + mDelayedScanCounter.get()); 982 } 983 }, 984 new IntentFilter(ACTION_START_SCAN)); 985 986 IntentFilter filter = new IntentFilter(); 987 filter.addAction(Intent.ACTION_SCREEN_ON); 988 filter.addAction(Intent.ACTION_SCREEN_OFF); 989 filter.addAction(ACTION_REFRESH_BATCHED_SCAN); 990 mContext.registerReceiver( 991 new BroadcastReceiver() { 992 @Override 993 public void onReceive(Context context, Intent intent) { 994 String action = intent.getAction(); 995 996 if (action.equals(Intent.ACTION_SCREEN_ON)) { 997 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 998 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 999 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1000 } else if (action.equals(ACTION_REFRESH_BATCHED_SCAN)) { 1001 startNextBatchedScanAsync(); 1002 } 1003 } 1004 }, filter); 1005 1006 mContext.registerReceiver( 1007 new BroadcastReceiver() { 1008 @Override 1009 public void onReceive(Context context, Intent intent) { 1010 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 1011 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 1012 } 1013 }, 1014 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1015 1016 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1017 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1018 new ContentObserver(getHandler()) { 1019 @Override 1020 public void onChange(boolean selfChange) { 1021 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1022 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1023 } 1024 }); 1025 1026 mContext.registerReceiver( 1027 new BroadcastReceiver() { 1028 @Override 1029 public void onReceive(Context context, Intent intent) { 1030 sendMessage(CMD_BOOT_COMPLETED); 1031 } 1032 }, 1033 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1034 1035 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1036 1037 PowerManager powerManager = (PowerManager)mContext.getSystemService(Context.POWER_SERVICE); 1038 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1039 1040 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1041 mSuspendWakeLock.setReferenceCounted(false); 1042 1043 mTcpBufferSizes = mContext.getResources().getString( 1044 com.android.internal.R.string.config_wifi_tcp_buffers); 1045 1046 addState(mDefaultState); 1047 addState(mInitialState, mDefaultState); 1048 addState(mSupplicantStartingState, mDefaultState); 1049 addState(mSupplicantStartedState, mDefaultState); 1050 addState(mDriverStartingState, mSupplicantStartedState); 1051 addState(mDriverStartedState, mSupplicantStartedState); 1052 addState(mScanModeState, mDriverStartedState); 1053 addState(mConnectModeState, mDriverStartedState); 1054 addState(mL2ConnectedState, mConnectModeState); 1055 addState(mObtainingIpState, mL2ConnectedState); 1056 addState(mVerifyingLinkState, mL2ConnectedState); 1057 addState(mConnectedState, mL2ConnectedState); 1058 addState(mRoamingState, mL2ConnectedState); 1059 addState(mDisconnectingState, mConnectModeState); 1060 addState(mDisconnectedState, mConnectModeState); 1061 addState(mWpsRunningState, mConnectModeState); 1062 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1063 addState(mDriverStoppingState, mSupplicantStartedState); 1064 addState(mDriverStoppedState, mSupplicantStartedState); 1065 addState(mSupplicantStoppingState, mDefaultState); 1066 addState(mSoftApStartingState, mDefaultState); 1067 addState(mSoftApStartedState, mDefaultState); 1068 addState(mTetheringState, mSoftApStartedState); 1069 addState(mTetheredState, mSoftApStartedState); 1070 addState(mUntetheringState, mSoftApStartedState); 1071 1072 setInitialState(mInitialState); 1073 1074 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1075 setLogOnlyTransitions(false); 1076 if (VDBG) setDbg(true); 1077 1078 File f = new File("/data/misc/wifi/pps.data"); 1079 logd("Jan: WFSM constructed on " + Thread.currentThread() + 1080 ", file: " + (f.exists() ? f.length() : "-")); 1081 1082 SelectionManager selectionManager; 1083 try { 1084 selectionManager = new SelectionManager(new File("/data/misc/wifi/pps.data"), 1085 new File("/data/misc/wifi/lastssid"), 1086 mWifiNative, this); 1087 } 1088 catch (IOException ioe) { 1089 selectionManager = null; 1090 } 1091 mSelectionManager = selectionManager; 1092 1093 //start the state machine 1094 start(); 1095 1096 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1097 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1098 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1099 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1100 } 1101 1102 1103 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1104 Intent intent = new Intent(action, null); 1105 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1106 intent.setPackage(this.getClass().getPackage().getName()); 1107 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1108 } 1109 1110 private int mVerboseLoggingLevel = 0; 1111 1112 int getVerboseLoggingLevel() { 1113 return mVerboseLoggingLevel; 1114 } 1115 1116 void enableVerboseLogging(int verbose) { 1117 mVerboseLoggingLevel = verbose; 1118 if (verbose > 0) { 1119 DBG = true; 1120 VDBG = true; 1121 PDBG = true; 1122 mLogMessages = true; 1123 mWifiNative.setSupplicantLogLevel("DEBUG"); 1124 } else { 1125 DBG = false; 1126 VDBG = false; 1127 PDBG = false; 1128 mLogMessages = false; 1129 mWifiNative.setSupplicantLogLevel("INFO"); 1130 } 1131 mWifiAutoJoinController.enableVerboseLogging(verbose); 1132 mWifiMonitor.enableVerboseLogging(verbose); 1133 mWifiNative.enableVerboseLogging(verbose); 1134 mWifiConfigStore.enableVerboseLogging(verbose); 1135 mSupplicantStateTracker.enableVerboseLogging(verbose); 1136 } 1137 1138 private int mAggressiveHandover = 0; 1139 1140 int getAggressiveHandover() { 1141 return mAggressiveHandover; 1142 } 1143 1144 void enableAggressiveHandover(int enabled) { 1145 mAggressiveHandover = enabled; 1146 } 1147 1148 public void setAllowScansWithTraffic(int enabled) { 1149 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1150 } 1151 1152 public int getAllowScansWithTraffic() { 1153 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1154 } 1155 1156 /* 1157 * 1158 * Framework scan control 1159 */ 1160 1161 private boolean mAlarmEnabled = false; 1162 /* This is set from the overlay config file or from a secure setting. 1163 * A value of 0 disables scanning in the framework. 1164 */ 1165 private long mFrameworkScanIntervalMs = 10000; 1166 1167 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1168 1169 private void setScanAlarm(boolean enabled) { 1170 if (PDBG) { 1171 loge("setScanAlarm " + enabled 1172 + " period " + mDefaultFrameworkScanIntervalMs 1173 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1174 } 1175 if (mBackgroundScanSupported == false) { 1176 // Scan alarm is only used for background scans if they are not 1177 // offloaded to the wifi chipset, hence enable the scan alarm 1178 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1179 enabled = true; 1180 } 1181 1182 if (enabled == mAlarmEnabled) return; 1183 if (enabled) { 1184 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1185 /* going to wake up the host processor to look for access points */ 1186 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1187 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1188 mScanIntent); 1189 mAlarmEnabled = true; 1190 } else { 1191 mAlarmManager.cancel(mScanIntent); 1192 mAlarmEnabled = false; 1193 } 1194 } 1195 1196 private void cancelDelayedScan() { 1197 mDelayedScanCounter.incrementAndGet(); 1198 loge("cancelDelayedScan -> " + mDelayedScanCounter); 1199 } 1200 1201 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1202 ScanSettings settings, WorkSource workSource) { 1203 if (counter != mDelayedScanCounter.get()) { 1204 return false; 1205 } 1206 if (restart) 1207 startDelayedScan(milli, settings, workSource); 1208 return true; 1209 } 1210 1211 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1212 if (milli <= 0) return; 1213 /** 1214 * The cases where the scan alarm should be run are : 1215 * - DisconnectedState && screenOn => used delayed timer 1216 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1217 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1218 * - ConnectedState && screenOn => used delayed timer 1219 */ 1220 1221 mDelayedScanCounter.incrementAndGet(); 1222 if (mScreenOn && 1223 (getCurrentState() == mDisconnectedState 1224 || getCurrentState() == mConnectedState)) { 1225 Bundle bundle = new Bundle(); 1226 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1227 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1228 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1229 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1230 mDelayedScanCounter.get(), bundle, milli); 1231 if (DBG) loge("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1232 } else if (mBackgroundScanSupported == false 1233 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1234 setScanAlarm(true); 1235 if (DBG) loge("startDelayedScan start scan alarm -> " 1236 + mDelayedScanCounter + " milli " + milli); 1237 } else { 1238 if (DBG) loge("startDelayedScan unhandled -> " 1239 + mDelayedScanCounter + " milli " + milli); 1240 } 1241 } 1242 1243 private boolean setRandomMacOui() { 1244 String oui = mContext.getResources().getString( 1245 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1246 String[] ouiParts = oui.split("-"); 1247 byte[] ouiBytes = new byte[3]; 1248 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1249 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1250 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1251 1252 logd("Setting OUI to " + oui); 1253 return mWifiNative.setScanningMacOui(ouiBytes); 1254 } 1255 1256 /********************************************************* 1257 * Methods exposed for public use 1258 ********************************************************/ 1259 1260 public Messenger getMessenger() { 1261 return new Messenger(getHandler()); 1262 } 1263 1264 public WifiMonitor getWifiMonitor() { 1265 return mWifiMonitor; 1266 } 1267 1268 /** 1269 * TODO: doc 1270 */ 1271 public boolean syncPingSupplicant(AsyncChannel channel) { 1272 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1273 boolean result = (resultMsg.arg1 != FAILURE); 1274 resultMsg.recycle(); 1275 return result; 1276 } 1277 1278 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1279 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1280 List<WifiChannel> list = null; 1281 if (resultMsg.obj != null) { 1282 list = new ArrayList<WifiChannel>(); 1283 String freqs = (String) resultMsg.obj; 1284 String[] lines = freqs.split("\n"); 1285 for (String line : lines) 1286 if (line.contains("MHz")) { 1287 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1288 WifiChannel c = new WifiChannel(); 1289 String[] prop = line.split(" "); 1290 if (prop.length < 5) continue; 1291 try { 1292 c.channelNum = Integer.parseInt(prop[1]); 1293 c.freqMHz = Integer.parseInt(prop[3]); 1294 } catch (NumberFormatException e) { } 1295 c.isDFS = line.contains("(DFS)"); 1296 list.add(c); 1297 } else if (line.contains("Mode[B] Channels:")) { 1298 // B channels are the same as G channels, skipped 1299 break; 1300 } 1301 } 1302 resultMsg.recycle(); 1303 return (list != null && list.size() > 0) ? list : null; 1304 } 1305 1306 /** 1307 * When settings allowing making use of untrusted networks change, trigger a scan 1308 * so as to kick of autojoin. 1309 */ 1310 public void startScanForUntrustedSettingChange() { 1311 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1312 } 1313 1314 /** 1315 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1316 * given to callingUid. 1317 * 1318 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1319 * workSource is specified. 1320 * @param workSource If not null, blame is given to workSource. 1321 * @param settings Scan settings, see {@link ScanSettings}. 1322 */ 1323 public void startScan(int callingUid, int scanCounter, 1324 ScanSettings settings, WorkSource workSource) { 1325 Bundle bundle = new Bundle(); 1326 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1327 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1328 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1329 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1330 } 1331 1332 /** 1333 * start or stop batched scanning using the given settings 1334 */ 1335 public void setBatchedScanSettings(BatchedScanSettings settings, int callingUid, int csph, 1336 WorkSource workSource) { 1337 Bundle bundle = new Bundle(); 1338 bundle.putParcelable(BATCHED_SETTING, settings); 1339 bundle.putParcelable(BATCHED_WORKSOURCE, workSource); 1340 sendMessage(CMD_SET_BATCHED_SCAN, callingUid, csph, bundle); 1341 } 1342 1343 public List<BatchedScanResult> syncGetBatchedScanResultsList() { 1344 synchronized (mBatchedScanResults) { 1345 List<BatchedScanResult> batchedScanList = 1346 new ArrayList<BatchedScanResult>(mBatchedScanResults.size()); 1347 for(BatchedScanResult result: mBatchedScanResults) { 1348 batchedScanList.add(new BatchedScanResult(result)); 1349 } 1350 return batchedScanList; 1351 } 1352 } 1353 1354 public void requestBatchedScanPoll() { 1355 sendMessage(CMD_POLL_BATCHED_SCAN); 1356 } 1357 1358 private void startBatchedScan() { 1359 if (mBatchedScanSettings == null) return; 1360 1361 if (mDhcpActive) { 1362 if (DBG) log("not starting Batched Scans due to DHCP"); 1363 return; 1364 } 1365 1366 // first grab any existing data 1367 retrieveBatchedScanData(); 1368 1369 if (PDBG) loge("try starting Batched Scans due to DHCP"); 1370 1371 1372 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1373 1374 String scansExpected = mWifiNative.setBatchedScanSettings(mBatchedScanSettings); 1375 try { 1376 mExpectedBatchedScans = Integer.parseInt(scansExpected); 1377 setNextBatchedAlarm(mExpectedBatchedScans); 1378 if (mExpectedBatchedScans > 0) noteBatchedScanStart(); 1379 } catch (NumberFormatException e) { 1380 stopBatchedScan(); 1381 loge("Exception parsing WifiNative.setBatchedScanSettings response " + e); 1382 } 1383 } 1384 1385 // called from BroadcastListener 1386 private void startNextBatchedScanAsync() { 1387 sendMessage(CMD_START_NEXT_BATCHED_SCAN); 1388 } 1389 1390 private void startNextBatchedScan() { 1391 // first grab any existing data 1392 retrieveBatchedScanData(); 1393 1394 setNextBatchedAlarm(mExpectedBatchedScans); 1395 } 1396 1397 private void handleBatchedScanPollRequest() { 1398 if (DBG) { 1399 log("handleBatchedScanPoll Request - mBatchedScanMinPollTime=" + 1400 mBatchedScanMinPollTime + " , mBatchedScanSettings=" + 1401 mBatchedScanSettings); 1402 } 1403 // if there is no appropriate PollTime that's because we either aren't 1404 // batching or we've already set a time for a poll request 1405 if (mBatchedScanMinPollTime == 0) return; 1406 if (mBatchedScanSettings == null) return; 1407 1408 long now = System.currentTimeMillis(); 1409 1410 if (now > mBatchedScanMinPollTime) { 1411 // do the poll and reset our timers 1412 startNextBatchedScan(); 1413 } else { 1414 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, mBatchedScanMinPollTime, 1415 mBatchedScanIntervalIntent); 1416 mBatchedScanMinPollTime = 0; 1417 } 1418 } 1419 1420 // return true if new/different 1421 private boolean recordBatchedScanSettings(int responsibleUid, int csph, Bundle bundle) { 1422 BatchedScanSettings settings = bundle.getParcelable(BATCHED_SETTING); 1423 WorkSource responsibleWorkSource = bundle.getParcelable(BATCHED_WORKSOURCE); 1424 1425 if (DBG) { 1426 log("set batched scan to " + settings + " for uid=" + responsibleUid + 1427 ", worksource=" + responsibleWorkSource); 1428 } 1429 if (settings != null) { 1430 if (settings.equals(mBatchedScanSettings)) return false; 1431 } else { 1432 if (mBatchedScanSettings == null) return false; 1433 } 1434 mBatchedScanSettings = settings; 1435 if (responsibleWorkSource == null) responsibleWorkSource = new WorkSource(responsibleUid); 1436 mBatchedScanWorkSource = responsibleWorkSource; 1437 mBatchedScanCsph = csph; 1438 return true; 1439 } 1440 1441 private void stopBatchedScan() { 1442 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1443 retrieveBatchedScanData(); 1444 mWifiNative.setBatchedScanSettings(null); 1445 noteBatchedScanStop(); 1446 } 1447 1448 private void setNextBatchedAlarm(int scansExpected) { 1449 1450 if (mBatchedScanSettings == null || scansExpected < 1) return; 1451 1452 mBatchedScanMinPollTime = System.currentTimeMillis() + 1453 mBatchedScanSettings.scanIntervalSec * 1000; 1454 1455 if (mBatchedScanSettings.maxScansPerBatch < scansExpected) { 1456 scansExpected = mBatchedScanSettings.maxScansPerBatch; 1457 } 1458 1459 int secToFull = mBatchedScanSettings.scanIntervalSec; 1460 secToFull *= scansExpected; 1461 1462 int debugPeriod = SystemProperties.getInt("wifi.batchedScan.pollPeriod", 0); 1463 if (debugPeriod > 0) secToFull = debugPeriod; 1464 1465 // set the alarm to do the next poll. We set it a little short as we'd rather 1466 // wake up wearly than miss a scan due to buffer overflow 1467 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 1468 + ((secToFull - (mBatchedScanSettings.scanIntervalSec / 2)) * 1000), 1469 mBatchedScanIntervalIntent); 1470 } 1471 1472 /** 1473 * Start reading new scan data 1474 * Data comes in as: 1475 * "scancount=5\n" 1476 * "nextcount=5\n" 1477 * "apcount=3\n" 1478 * "trunc\n" (optional) 1479 * "bssid=...\n" 1480 * "ssid=...\n" 1481 * "freq=...\n" (in Mhz) 1482 * "level=...\n" 1483 * "dist=...\n" (in cm) 1484 * "distsd=...\n" (standard deviation, in cm) 1485 * "====" 1486 * "bssid=...\n" 1487 * etc 1488 * "====" 1489 * "bssid=...\n" 1490 * etc 1491 * "%%%%" 1492 * "apcount=2\n" 1493 * "bssid=...\n" 1494 * etc 1495 * "%%%% 1496 * etc 1497 * "----" 1498 */ 1499 private final static boolean DEBUG_PARSE = false; 1500 private void retrieveBatchedScanData() { 1501 String rawData = mWifiNative.getBatchedScanResults(); 1502 if (DEBUG_PARSE) log("rawData = " + rawData); 1503 mBatchedScanMinPollTime = 0; 1504 if (rawData == null || rawData.equalsIgnoreCase("OK")) { 1505 loge("Unexpected BatchedScanResults :" + rawData); 1506 return; 1507 } 1508 1509 int scanCount = 0; 1510 final String END_OF_BATCHES = "----"; 1511 final String SCANCOUNT = "scancount="; 1512 final String TRUNCATED = "trunc"; 1513 final String AGE = "age="; 1514 final String DIST = "dist="; 1515 final String DISTSD = "distSd="; 1516 1517 String splitData[] = rawData.split("\n"); 1518 int n = 0; 1519 if (splitData[n].startsWith(SCANCOUNT)) { 1520 try { 1521 scanCount = Integer.parseInt(splitData[n++].substring(SCANCOUNT.length())); 1522 } catch (NumberFormatException e) { 1523 loge("scancount parseInt Exception from " + splitData[n]); 1524 } 1525 } else log("scancount not found"); 1526 if (scanCount == 0) { 1527 loge("scanCount==0 - aborting"); 1528 return; 1529 } 1530 1531 final Intent intent = new Intent(WifiManager.BATCHED_SCAN_RESULTS_AVAILABLE_ACTION); 1532 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1533 1534 synchronized (mBatchedScanResults) { 1535 mBatchedScanResults.clear(); 1536 BatchedScanResult batchedScanResult = new BatchedScanResult(); 1537 1538 String bssid = null; 1539 WifiSsid wifiSsid = null; 1540 int level = 0; 1541 int freq = 0; 1542 int dist, distSd; 1543 long tsf = 0; 1544 dist = distSd = ScanResult.UNSPECIFIED; 1545 final long now = SystemClock.elapsedRealtime(); 1546 final int bssidStrLen = BSSID_STR.length(); 1547 1548 while (true) { 1549 while (n < splitData.length) { 1550 if (DEBUG_PARSE) logd("parsing " + splitData[n]); 1551 if (splitData[n].equals(END_OF_BATCHES)) { 1552 if (n+1 != splitData.length) { 1553 loge("didn't consume " + (splitData.length-n)); 1554 } 1555 if (mBatchedScanResults.size() > 0) { 1556 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1557 } 1558 logd("retrieveBatchedScanResults X"); 1559 return; 1560 } 1561 if ((splitData[n].equals(END_STR)) || splitData[n].equals(DELIMITER_STR)) { 1562 if (bssid != null) { 1563 batchedScanResult.scanResults.add(new ScanResult( 1564 wifiSsid, bssid, null, 1565 level, freq, tsf, dist, distSd)); 1566 wifiSsid = null; 1567 bssid = null; 1568 level = 0; 1569 freq = 0; 1570 tsf = 0; 1571 dist = distSd = ScanResult.UNSPECIFIED; 1572 } 1573 if (splitData[n].equals(END_STR)) { 1574 if (batchedScanResult.scanResults.size() != 0) { 1575 mBatchedScanResults.add(batchedScanResult); 1576 batchedScanResult = new BatchedScanResult(); 1577 } else { 1578 logd("Found empty batch"); 1579 } 1580 } 1581 } else if (splitData[n].equals(TRUNCATED)) { 1582 batchedScanResult.truncated = true; 1583 } else if (splitData[n].startsWith(BSSID_STR)) { 1584 bssid = new String(splitData[n].getBytes(), bssidStrLen, 1585 splitData[n].length() - bssidStrLen); 1586 } else if (splitData[n].startsWith(FREQ_STR)) { 1587 try { 1588 freq = Integer.parseInt(splitData[n].substring(FREQ_STR.length())); 1589 } catch (NumberFormatException e) { 1590 loge("Invalid freqency: " + splitData[n]); 1591 freq = 0; 1592 } 1593 } else if (splitData[n].startsWith(AGE)) { 1594 try { 1595 tsf = now - Long.parseLong(splitData[n].substring(AGE.length())); 1596 tsf *= 1000; // convert mS -> uS 1597 } catch (NumberFormatException e) { 1598 loge("Invalid timestamp: " + splitData[n]); 1599 tsf = 0; 1600 } 1601 } else if (splitData[n].startsWith(SSID_STR)) { 1602 wifiSsid = WifiSsid.createFromAsciiEncoded( 1603 splitData[n].substring(SSID_STR.length())); 1604 } else if (splitData[n].startsWith(LEVEL_STR)) { 1605 try { 1606 level = Integer.parseInt(splitData[n].substring(LEVEL_STR.length())); 1607 if (level > 0) level -= 256; 1608 } catch (NumberFormatException e) { 1609 loge("Invalid level: " + splitData[n]); 1610 level = 0; 1611 } 1612 } else if (splitData[n].startsWith(DIST)) { 1613 try { 1614 dist = Integer.parseInt(splitData[n].substring(DIST.length())); 1615 } catch (NumberFormatException e) { 1616 loge("Invalid distance: " + splitData[n]); 1617 dist = ScanResult.UNSPECIFIED; 1618 } 1619 } else if (splitData[n].startsWith(DISTSD)) { 1620 try { 1621 distSd = Integer.parseInt(splitData[n].substring(DISTSD.length())); 1622 } catch (NumberFormatException e) { 1623 loge("Invalid distanceSd: " + splitData[n]); 1624 distSd = ScanResult.UNSPECIFIED; 1625 } 1626 } else { 1627 loge("Unable to parse batched scan result line: " + splitData[n]); 1628 } 1629 n++; 1630 } 1631 rawData = mWifiNative.getBatchedScanResults(); 1632 if (DEBUG_PARSE) log("reading more data:\n" + rawData); 1633 if (rawData == null) { 1634 loge("Unexpected null BatchedScanResults"); 1635 return; 1636 } 1637 splitData = rawData.split("\n"); 1638 if (splitData.length == 0 || splitData[0].equals("ok")) { 1639 loge("batch scan results just ended!"); 1640 if (mBatchedScanResults.size() > 0) { 1641 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1642 } 1643 return; 1644 } 1645 n = 0; 1646 } 1647 } 1648 } 1649 1650 private long mDisconnectedTimeStamp = 0; 1651 1652 public long getDisconnectedTimeMilli() { 1653 if (getCurrentState() == mDisconnectedState 1654 && mDisconnectedTimeStamp != 0) { 1655 long now_ms = System.currentTimeMillis(); 1656 return now_ms - mDisconnectedTimeStamp; 1657 } 1658 return 0; 1659 } 1660 1661 // Keeping track of scan requests 1662 private long lastStartScanTimeStamp = 0; 1663 private long lastScanDuration = 0; 1664 // Last connect attempt is used to prevent scan requests: 1665 // - for a period of 10 seconds after attempting to connect 1666 private long lastConnectAttempt = 0; 1667 private String lastScanFreqs = null; 1668 1669 // For debugging, keep track of last message status handling 1670 // TODO, find an equivalent mechanism as part of parent class 1671 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1672 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1673 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1674 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1675 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1676 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1677 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1678 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1679 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1680 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1681 1682 private int messageHandlingStatus = 0; 1683 1684 //TODO: this is used only to track connection attempts, however the link state and packet per 1685 //TODO: second logic should be folded into that 1686 private boolean checkOrDeferScanAllowed(Message msg) { 1687 long now = System.currentTimeMillis(); 1688 if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { 1689 Message dmsg = Message.obtain(msg); 1690 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttempt)); 1691 return false; 1692 } 1693 return true; 1694 } 1695 1696 private int mOnTime = 0; 1697 private int mTxTime = 0; 1698 private int mRxTime = 0; 1699 private int mOnTimeStartScan = 0; 1700 private int mTxTimeStartScan = 0; 1701 private int mRxTimeStartScan = 0; 1702 private int mOnTimeScan = 0; 1703 private int mTxTimeScan = 0; 1704 private int mRxTimeScan = 0; 1705 private int mOnTimeThisScan = 0; 1706 private int mTxTimeThisScan = 0; 1707 private int mRxTimeThisScan = 0; 1708 1709 private int mOnTimeScreenStateChange = 0; 1710 private int mOnTimeAtLastReport = 0; 1711 private long lastOntimeReportTimeStamp = 0; 1712 private long lastScreenStateChangeTimeStamp = 0; 1713 private int mOnTimeLastReport = 0; 1714 private int mTxTimeLastReport = 0; 1715 private int mRxTimeLastReport = 0; 1716 1717 private long lastLinkLayerStatsUpdate = 0; 1718 1719 String reportOnTime() { 1720 long now = System.currentTimeMillis(); 1721 StringBuilder sb = new StringBuilder(); 1722 // Report stats since last report 1723 int on = mOnTime - mOnTimeLastReport; 1724 mOnTimeLastReport = mOnTime; 1725 int tx = mTxTime - mTxTimeLastReport; 1726 mTxTimeLastReport = mTxTime; 1727 int rx = mRxTime - mRxTimeLastReport; 1728 mRxTimeLastReport = mRxTime; 1729 int period = (int)(now - lastOntimeReportTimeStamp); 1730 lastOntimeReportTimeStamp = now; 1731 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1732 // Report stats since Screen State Changed 1733 on = mOnTime - mOnTimeScreenStateChange; 1734 period = (int)(now - lastScreenStateChangeTimeStamp); 1735 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1736 return sb.toString(); 1737 } 1738 1739 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1740 WifiLinkLayerStats stats = null; 1741 if (mWifiLinkLayerStatsSupported > 0) { 1742 String name = "wlan0"; 1743 stats = mWifiNative.getWifiLinkLayerStats(name); 1744 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1745 mWifiLinkLayerStatsSupported -= 1; 1746 } else if (stats != null) { 1747 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1748 mOnTime = stats.on_time; 1749 mTxTime = stats.tx_time; 1750 mRxTime = stats.rx_time; 1751 mRunningBeaconCount = stats.beacon_rx; 1752 if (dbg) { 1753 loge(stats.toString()); 1754 } 1755 } 1756 } 1757 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1758 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1759 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1760 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1761 } else { 1762 mWifiInfo.updatePacketRates(stats); 1763 } 1764 return stats; 1765 } 1766 1767 void startRadioScanStats() { 1768 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1769 if (stats != null) { 1770 mOnTimeStartScan = stats.on_time; 1771 mTxTimeStartScan = stats.tx_time; 1772 mRxTimeStartScan = stats.rx_time; 1773 mOnTime = stats.on_time; 1774 mTxTime = stats.tx_time; 1775 mRxTime = stats.rx_time; 1776 } 1777 } 1778 1779 void closeRadioScanStats() { 1780 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1781 if (stats != null) { 1782 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1783 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1784 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1785 mOnTimeScan += mOnTimeThisScan; 1786 mTxTimeScan += mTxTimeThisScan; 1787 mRxTimeScan += mRxTimeThisScan; 1788 } 1789 } 1790 1791 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1792 private void noteScanStart(int callingUid, WorkSource workSource) { 1793 long now = System.currentTimeMillis(); 1794 lastStartScanTimeStamp = now; 1795 lastScanDuration = 0; 1796 if (DBG) { 1797 String ts = String.format("[%,d ms]", now); 1798 if (workSource != null) { 1799 loge(ts + " noteScanStart" + workSource.toString() 1800 + " uid " + Integer.toString(callingUid)); 1801 } else { 1802 loge(ts + " noteScanstart no scan source" 1803 + " uid " + Integer.toString(callingUid)); 1804 } 1805 } 1806 startRadioScanStats(); 1807 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1808 && callingUid != SCAN_ALARM_SOURCE) 1809 || workSource != null)) { 1810 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1811 try { 1812 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 1813 } catch (RemoteException e) { 1814 log(e.toString()); 1815 } 1816 } 1817 } 1818 1819 private void noteScanEnd() { 1820 long now = System.currentTimeMillis(); 1821 if (lastStartScanTimeStamp != 0) { 1822 lastScanDuration = now - lastStartScanTimeStamp; 1823 } 1824 lastStartScanTimeStamp = 0; 1825 if (DBG) { 1826 String ts = String.format("[%,d ms]", now); 1827 if (mScanWorkSource != null) 1828 loge(ts + " noteScanEnd " + mScanWorkSource.toString() 1829 + " onTime=" + mOnTimeThisScan); 1830 else 1831 loge(ts + " noteScanEnd no scan source" 1832 + " onTime=" + mOnTimeThisScan); 1833 } 1834 if (mScanWorkSource != null) { 1835 try { 1836 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1837 } catch (RemoteException e) { 1838 log(e.toString()); 1839 } finally { 1840 mScanWorkSource = null; 1841 } 1842 } 1843 } 1844 1845 private void noteBatchedScanStart() { 1846 if (PDBG) loge("noteBatchedScanstart()"); 1847 // note the end of a previous scan set 1848 if (mNotedBatchedScanWorkSource != null && 1849 (mNotedBatchedScanWorkSource.equals(mBatchedScanWorkSource) == false || 1850 mNotedBatchedScanCsph != mBatchedScanCsph)) { 1851 try { 1852 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1853 } catch (RemoteException e) { 1854 log(e.toString()); 1855 } finally { 1856 mNotedBatchedScanWorkSource = null; 1857 mNotedBatchedScanCsph = 0; 1858 } 1859 } 1860 // note the start of the new 1861 try { 1862 mBatteryStats.noteWifiBatchedScanStartedFromSource(mBatchedScanWorkSource, 1863 mBatchedScanCsph); 1864 mNotedBatchedScanWorkSource = mBatchedScanWorkSource; 1865 mNotedBatchedScanCsph = mBatchedScanCsph; 1866 } catch (RemoteException e) { 1867 log(e.toString()); 1868 } 1869 } 1870 1871 private void noteBatchedScanStop() { 1872 if (PDBG) loge("noteBatchedScanstop()"); 1873 1874 if (mNotedBatchedScanWorkSource != null) { 1875 try { 1876 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1877 } catch (RemoteException e) { 1878 log(e.toString()); 1879 } finally { 1880 mNotedBatchedScanWorkSource = null; 1881 mNotedBatchedScanCsph = 0; 1882 } 1883 } 1884 } 1885 1886 private void handleScanRequest(int type, Message message) { 1887 ScanSettings settings = null; 1888 WorkSource workSource = null; 1889 1890 // unbundle parameters 1891 Bundle bundle = (Bundle) message.obj; 1892 1893 if (bundle != null) { 1894 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1895 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1896 } 1897 1898 // parse scan settings 1899 String freqs = null; 1900 if (settings != null && settings.channelSet != null) { 1901 StringBuilder sb = new StringBuilder(); 1902 boolean first = true; 1903 for (WifiChannel channel : settings.channelSet) { 1904 if (!first) sb.append(','); else first = false; 1905 sb.append(channel.freqMHz); 1906 } 1907 freqs = sb.toString(); 1908 } 1909 1910 // call wifi native to start the scan 1911 if (startScanNative(type, freqs)) { 1912 // only count battery consumption if scan request is accepted 1913 noteScanStart(message.arg1, workSource); 1914 // a full scan covers everything, clearing scan request buffer 1915 if (freqs == null) 1916 mBufferedScanMsg.clear(); 1917 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1918 if (workSource != null) { 1919 // External worksource was passed along the scan request, 1920 // hence always send a broadcast 1921 mSendScanResultsBroadcast = true; 1922 } 1923 return; 1924 } 1925 1926 // if reach here, scan request is rejected 1927 1928 if (!mIsScanOngoing) { 1929 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1930 1931 // discard this request and pop up the next one 1932 if (mBufferedScanMsg.size() > 0) { 1933 sendMessage(mBufferedScanMsg.remove()); 1934 } 1935 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 1936 } else if (!mIsFullScanOngoing) { 1937 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 1938 // buffer the scan request to make sure specified channels will be scanned eventually 1939 if (freqs == null) 1940 mBufferedScanMsg.clear(); 1941 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 1942 Message msg = obtainMessage(CMD_START_SCAN, 1943 message.arg1, message.arg2, bundle); 1944 mBufferedScanMsg.add(msg); 1945 } else { 1946 // if too many requests in buffer, combine them into a single full scan 1947 bundle = new Bundle(); 1948 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 1949 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1950 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 1951 mBufferedScanMsg.clear(); 1952 mBufferedScanMsg.add(msg); 1953 } 1954 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 1955 } else { 1956 // mIsScanOngoing and mIsFullScanOngoing 1957 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 1958 } 1959 } 1960 1961 1962 /** return true iff scan request is accepted */ 1963 private boolean startScanNative(int type, String freqs) { 1964 if (mWifiNative.scan(type, freqs)) { 1965 mIsScanOngoing = true; 1966 mIsFullScanOngoing = (freqs == null); 1967 lastScanFreqs = freqs; 1968 return true; 1969 } 1970 return false; 1971 } 1972 1973 /** 1974 * TODO: doc 1975 */ 1976 public void setSupplicantRunning(boolean enable) { 1977 if (enable) { 1978 sendMessage(CMD_START_SUPPLICANT); 1979 } else { 1980 sendMessage(CMD_STOP_SUPPLICANT); 1981 } 1982 } 1983 1984 /** 1985 * TODO: doc 1986 */ 1987 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 1988 if (enable) { 1989 sendMessage(CMD_START_AP, wifiConfig); 1990 } else { 1991 sendMessage(CMD_STOP_AP); 1992 } 1993 } 1994 1995 public void setWifiApConfiguration(WifiConfiguration config) { 1996 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 1997 } 1998 1999 public WifiConfiguration syncGetWifiApConfiguration() { 2000 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 2001 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 2002 resultMsg.recycle(); 2003 return ret; 2004 } 2005 2006 /** 2007 * TODO: doc 2008 */ 2009 public int syncGetWifiState() { 2010 return mWifiState.get(); 2011 } 2012 2013 /** 2014 * TODO: doc 2015 */ 2016 public String syncGetWifiStateByName() { 2017 switch (mWifiState.get()) { 2018 case WIFI_STATE_DISABLING: 2019 return "disabling"; 2020 case WIFI_STATE_DISABLED: 2021 return "disabled"; 2022 case WIFI_STATE_ENABLING: 2023 return "enabling"; 2024 case WIFI_STATE_ENABLED: 2025 return "enabled"; 2026 case WIFI_STATE_UNKNOWN: 2027 return "unknown state"; 2028 default: 2029 return "[invalid state]"; 2030 } 2031 } 2032 2033 /** 2034 * TODO: doc 2035 */ 2036 public int syncGetWifiApState() { 2037 return mWifiApState.get(); 2038 } 2039 2040 /** 2041 * TODO: doc 2042 */ 2043 public String syncGetWifiApStateByName() { 2044 switch (mWifiApState.get()) { 2045 case WIFI_AP_STATE_DISABLING: 2046 return "disabling"; 2047 case WIFI_AP_STATE_DISABLED: 2048 return "disabled"; 2049 case WIFI_AP_STATE_ENABLING: 2050 return "enabling"; 2051 case WIFI_AP_STATE_ENABLED: 2052 return "enabled"; 2053 case WIFI_AP_STATE_FAILED: 2054 return "failed"; 2055 default: 2056 return "[invalid state]"; 2057 } 2058 } 2059 2060 /** 2061 * Get status information for the current connection, if any. 2062 * @return a {@link WifiInfo} object containing information about the current connection 2063 * 2064 */ 2065 public WifiInfo syncRequestConnectionInfo() { 2066 return mWifiInfo; 2067 } 2068 2069 public DhcpResults syncGetDhcpResults() { 2070 synchronized (mDhcpResultsLock) { 2071 return new DhcpResults(mDhcpResults); 2072 } 2073 } 2074 2075 /** 2076 * TODO: doc 2077 */ 2078 public void setDriverStart(boolean enable) { 2079 if (enable) { 2080 sendMessage(CMD_START_DRIVER); 2081 } else { 2082 sendMessage(CMD_STOP_DRIVER); 2083 } 2084 } 2085 2086 /** 2087 * TODO: doc 2088 */ 2089 public void setOperationalMode(int mode) { 2090 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2091 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2092 } 2093 2094 /** 2095 * TODO: doc 2096 */ 2097 public List<ScanResult> syncGetScanResultsList() { 2098 synchronized (mScanResultCache) { 2099 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2100 for(ScanDetail result: mScanResults) { 2101 scanList.add(new ScanResult(result.getScanResult())); 2102 } 2103 return scanList; 2104 } 2105 } 2106 2107 public void disableEphemeralNetwork(String SSID) { 2108 if (SSID != null) { 2109 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2110 } 2111 } 2112 2113 /** 2114 * Get unsynchronized pointer to scan result list 2115 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2116 */ 2117 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2118 return mScanResults; 2119 } 2120 2121 /** 2122 * Disconnect from Access Point 2123 */ 2124 public void disconnectCommand() { 2125 sendMessage(CMD_DISCONNECT); 2126 } 2127 2128 public void disconnectCommand(int uid, int reason) { 2129 sendMessage(CMD_DISCONNECT, uid, reason); 2130 } 2131 2132 /** 2133 * Initiate a reconnection to AP 2134 */ 2135 public void reconnectCommand() { 2136 sendMessage(CMD_RECONNECT); 2137 } 2138 2139 /** 2140 * Initiate a re-association to AP 2141 */ 2142 public void reassociateCommand() { 2143 sendMessage(CMD_REASSOCIATE); 2144 } 2145 2146 /** 2147 * Reload networks and then reconnect; helps load correct data for TLS networks 2148 */ 2149 2150 public void reloadTlsNetworksAndReconnect() { 2151 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2152 } 2153 2154 /** 2155 * Add a network synchronously 2156 * 2157 * @return network id of the new network 2158 */ 2159 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2160 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2161 int result = resultMsg.arg1; 2162 resultMsg.recycle(); 2163 return result; 2164 } 2165 2166 /** 2167 * Get configured networks synchronously 2168 * @param channel 2169 * @return 2170 */ 2171 2172 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2173 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2174 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2175 resultMsg.recycle(); 2176 return result; 2177 } 2178 2179 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2180 Message resultMsg = channel.sendMessageSynchronously( 2181 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2182 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2183 resultMsg.recycle(); 2184 return result; 2185 } 2186 2187 2188 /** 2189 * Get connection statistics synchronously 2190 * @param channel 2191 * @return 2192 */ 2193 2194 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2195 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2196 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2197 resultMsg.recycle(); 2198 return result; 2199 } 2200 2201 /** 2202 * Get adaptors synchronously 2203 */ 2204 2205 public int syncGetSupportedFeatures(AsyncChannel channel) { 2206 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2207 int supportedFeatureSet = resultMsg.arg1; 2208 resultMsg.recycle(); 2209 return supportedFeatureSet; 2210 } 2211 2212 /** 2213 * Get link layers stats for adapter synchronously 2214 */ 2215 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2216 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2217 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2218 resultMsg.recycle(); 2219 return result; 2220 } 2221 2222 /** 2223 * Delete a network 2224 * 2225 * @param networkId id of the network to be removed 2226 */ 2227 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2228 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2229 boolean result = (resultMsg.arg1 != FAILURE); 2230 resultMsg.recycle(); 2231 return result; 2232 } 2233 2234 /** 2235 * Enable a network 2236 * 2237 * @param netId network id of the network 2238 * @param disableOthers true, if all other networks have to be disabled 2239 * @return {@code true} if the operation succeeds, {@code false} otherwise 2240 */ 2241 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2242 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2243 disableOthers ? 1 : 0); 2244 boolean result = (resultMsg.arg1 != FAILURE); 2245 resultMsg.recycle(); 2246 return result; 2247 } 2248 2249 /** 2250 * Disable a network 2251 * 2252 * @param netId network id of the network 2253 * @return {@code true} if the operation succeeds, {@code false} otherwise 2254 */ 2255 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2256 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2257 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2258 resultMsg.recycle(); 2259 return result; 2260 } 2261 2262 /** 2263 * Retrieves a WPS-NFC configuration token for the specified network 2264 * @return a hex string representation of the WPS-NFC configuration token 2265 */ 2266 public String syncGetWpsNfcConfigurationToken(int netId) { 2267 return mWifiNative.getNfcWpsConfigurationToken(netId); 2268 } 2269 2270 void enableBackgroundScan(boolean enable) { 2271 if (enable) { 2272 mWifiConfigStore.enableAllNetworks(); 2273 } 2274 mWifiNative.enableBackgroundScan(enable); 2275 } 2276 2277 /** 2278 * Blacklist a BSSID. This will avoid the AP if there are 2279 * alternate APs to connect 2280 * 2281 * @param bssid BSSID of the network 2282 */ 2283 public void addToBlacklist(String bssid) { 2284 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2285 } 2286 2287 /** 2288 * Clear the blacklist list 2289 * 2290 */ 2291 public void clearBlacklist() { 2292 sendMessage(CMD_CLEAR_BLACKLIST); 2293 } 2294 2295 public void enableRssiPolling(boolean enabled) { 2296 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2297 } 2298 2299 public void enableAllNetworks() { 2300 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2301 } 2302 2303 /** 2304 * Start filtering Multicast v4 packets 2305 */ 2306 public void startFilteringMulticastV4Packets() { 2307 mFilteringMulticastV4Packets.set(true); 2308 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2309 } 2310 2311 /** 2312 * Stop filtering Multicast v4 packets 2313 */ 2314 public void stopFilteringMulticastV4Packets() { 2315 mFilteringMulticastV4Packets.set(false); 2316 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2317 } 2318 2319 /** 2320 * Start filtering Multicast v4 packets 2321 */ 2322 public void startFilteringMulticastV6Packets() { 2323 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2324 } 2325 2326 /** 2327 * Stop filtering Multicast v4 packets 2328 */ 2329 public void stopFilteringMulticastV6Packets() { 2330 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2331 } 2332 2333 /** 2334 * Set high performance mode of operation. 2335 * Enabling would set active power mode and disable suspend optimizations; 2336 * disabling would set auto power mode and enable suspend optimizations 2337 * @param enable true if enable, false otherwise 2338 */ 2339 public void setHighPerfModeEnabled(boolean enable) { 2340 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2341 } 2342 2343 /** 2344 * Set the country code 2345 * @param countryCode following ISO 3166 format 2346 * @param persist {@code true} if the setting should be remembered. 2347 */ 2348 public synchronized void setCountryCode(String countryCode, boolean persist) { 2349 // If it's a good country code, apply after the current 2350 // wifi connection is terminated; ignore resetting of code 2351 // for now (it is unclear what the chipset should do when 2352 // country code is reset) 2353 2354 if (TextUtils.isEmpty(countryCode)) { 2355 log("Ignoring resetting of country code"); 2356 } else { 2357 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2358 // else only when the new country code is different from the current one to set 2359 int countryCodeSequence = mCountryCodeSequence.get(); 2360 if(countryCodeSequence == 0 || countryCode.equals(mSetCountryCode) == false) { 2361 2362 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2363 mSetCountryCode = countryCode; 2364 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2365 countryCode); 2366 } 2367 2368 if (persist) { 2369 Settings.Global.putString(mContext.getContentResolver(), 2370 Settings.Global.WIFI_COUNTRY_CODE, 2371 countryCode); 2372 } 2373 } 2374 } 2375 2376 /** 2377 * Get the country code 2378 * @param countryCode following ISO 3166 format 2379 */ 2380 public String getCountryCode() { 2381 return mSetCountryCode; 2382 } 2383 2384 2385 /** 2386 * Set the operational frequency band 2387 * @param band 2388 * @param persist {@code true} if the setting should be remembered. 2389 */ 2390 public void setFrequencyBand(int band, boolean persist) { 2391 if (persist) { 2392 Settings.Global.putInt(mContext.getContentResolver(), 2393 Settings.Global.WIFI_FREQUENCY_BAND, 2394 band); 2395 } 2396 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2397 } 2398 2399 /** 2400 * Enable TDLS for a specific MAC address 2401 */ 2402 public void enableTdls(String remoteMacAddress, boolean enable) { 2403 int enabler = enable ? 1 : 0; 2404 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2405 } 2406 2407 /** 2408 * Returns the operational frequency band 2409 */ 2410 public int getFrequencyBand() { 2411 return mFrequencyBand.get(); 2412 } 2413 2414 /** 2415 * Returns the wifi configuration file 2416 */ 2417 public String getConfigFile() { 2418 return mWifiConfigStore.getConfigFile(); 2419 } 2420 2421 /** 2422 * Send a message indicating bluetooth adapter connection state changed 2423 */ 2424 public void sendBluetoothAdapterStateChange(int state) { 2425 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2426 } 2427 2428 /** 2429 * Save configuration on supplicant 2430 * 2431 * @return {@code true} if the operation succeeds, {@code false} otherwise 2432 * 2433 * TODO: deprecate this 2434 */ 2435 public boolean syncSaveConfig(AsyncChannel channel) { 2436 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2437 boolean result = (resultMsg.arg1 != FAILURE); 2438 resultMsg.recycle(); 2439 return result; 2440 } 2441 2442 public void updateBatteryWorkSource(WorkSource newSource) { 2443 synchronized (mRunningWifiUids) { 2444 try { 2445 if (newSource != null) { 2446 mRunningWifiUids.set(newSource); 2447 } 2448 if (mIsRunning) { 2449 if (mReportedRunning) { 2450 // If the work source has changed since last time, need 2451 // to remove old work from battery stats. 2452 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2453 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2454 mRunningWifiUids); 2455 mLastRunningWifiUids.set(mRunningWifiUids); 2456 } 2457 } else { 2458 // Now being started, report it. 2459 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2460 mLastRunningWifiUids.set(mRunningWifiUids); 2461 mReportedRunning = true; 2462 } 2463 } else { 2464 if (mReportedRunning) { 2465 // Last reported we were running, time to stop. 2466 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2467 mLastRunningWifiUids.clear(); 2468 mReportedRunning = false; 2469 } 2470 } 2471 mWakeLock.setWorkSource(newSource); 2472 } catch (RemoteException ignore) { 2473 } 2474 } 2475 } 2476 2477 @Override 2478 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2479 super.dump(fd, pw, args); 2480 mSupplicantStateTracker.dump(fd, pw, args); 2481 pw.println("mLinkProperties " + mLinkProperties); 2482 pw.println("mWifiInfo " + mWifiInfo); 2483 pw.println("mDhcpResults " + mDhcpResults); 2484 pw.println("mNetworkInfo " + mNetworkInfo); 2485 pw.println("mLastSignalLevel " + mLastSignalLevel); 2486 pw.println("mLastBssid " + mLastBssid); 2487 pw.println("mLastNetworkId " + mLastNetworkId); 2488 pw.println("mOperationalMode " + mOperationalMode); 2489 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2490 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2491 pw.println("Supplicant status " + mWifiNative.status(true)); 2492 pw.println("mEnableBackgroundScan " + mEnableBackgroundScan); 2493 pw.println("mSetCountryCode " + mSetCountryCode); 2494 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2495 mNetworkFactory.dump(fd, pw, args); 2496 pw.println(); 2497 mWifiConfigStore.dump(fd, pw, args); 2498 } 2499 2500 /********************************************************* 2501 * Internal private functions 2502 ********************************************************/ 2503 2504 private void logStateAndMessage(Message message, String state) { 2505 messageHandlingStatus = 0; 2506 if (mLogMessages) { 2507 //long now = SystemClock.elapsedRealtimeNanos(); 2508 //String ts = String.format("[%,d us]", now/1000); 2509 2510 loge( " " + state + " " + getLogRecString(message)); 2511 } 2512 } 2513 2514 /** 2515 * helper, prints the milli time since boot wi and w/o suspended time 2516 */ 2517 String printTime() { 2518 StringBuilder sb = new StringBuilder(); 2519 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2520 sb.append("/").append(SystemClock.elapsedRealtime()); 2521 return sb.toString(); 2522 } 2523 2524 /** 2525 * Return the additional string to be logged by LogRec, default 2526 * 2527 * @param msg that was processed 2528 * @return information to be logged as a String 2529 */ 2530 protected String getLogRecString(Message msg) { 2531 WifiConfiguration config; 2532 Long now; 2533 String report; 2534 String key; 2535 StringBuilder sb = new StringBuilder(); 2536 if (mScreenOn) { 2537 sb.append("!"); 2538 } 2539 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2540 sb.append("(").append(messageHandlingStatus).append(")"); 2541 } 2542 sb.append(smToString(msg)); 2543 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2544 sb.append(" uid=" + msg.sendingUid); 2545 } 2546 switch (msg.what) { 2547 case CMD_START_SCAN: 2548 now = System.currentTimeMillis(); 2549 sb.append(" "); 2550 sb.append(Integer.toString(msg.arg1)); 2551 sb.append(" "); 2552 sb.append(Integer.toString(msg.arg2)); 2553 sb.append(" ic="); 2554 sb.append(Integer.toString(sScanAlarmIntentCount)); 2555 if (msg.obj != null) { 2556 Bundle bundle = (Bundle)msg.obj; 2557 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2558 if (request != 0) { 2559 sb.append(" proc(ms):").append(now - request); 2560 } 2561 } 2562 if (mIsScanOngoing) sb.append(" onGoing"); 2563 if (mIsFullScanOngoing) sb.append(" full"); 2564 if (lastStartScanTimeStamp != 0) { 2565 sb.append(" started:").append(lastStartScanTimeStamp); 2566 sb.append(",").append(now - lastStartScanTimeStamp); 2567 } 2568 if (lastScanDuration != 0) { 2569 sb.append(" dur:").append(lastScanDuration); 2570 } 2571 sb.append(" cnt=").append(mDelayedScanCounter); 2572 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2573 sb.append(" f=").append(mWifiInfo.getFrequency()); 2574 sb.append(" sc=").append(mWifiInfo.score); 2575 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2576 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2577 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2578 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2579 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2580 if (lastScanFreqs != null) { 2581 sb.append(" list=").append(lastScanFreqs); 2582 } else { 2583 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2584 } 2585 report = reportOnTime(); 2586 if (report != null) { 2587 sb.append(" ").append(report); 2588 } 2589 break; 2590 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2591 sb.append(" "); 2592 sb.append(Integer.toString(msg.arg1)); 2593 sb.append(" "); 2594 sb.append(Integer.toString(msg.arg2)); 2595 sb.append(printTime()); 2596 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2597 if (stateChangeResult != null) { 2598 sb.append(stateChangeResult.toString()); 2599 } 2600 break; 2601 case WifiManager.SAVE_NETWORK: 2602 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2603 sb.append(" "); 2604 sb.append(Integer.toString(msg.arg1)); 2605 sb.append(" "); 2606 sb.append(Integer.toString(msg.arg2)); 2607 if (lastSavedConfigurationAttempt != null) { 2608 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2609 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2610 if (lastSavedConfigurationAttempt.hiddenSSID) { 2611 sb.append(" hidden"); 2612 } 2613 if (lastSavedConfigurationAttempt.preSharedKey != null 2614 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2615 sb.append(" hasPSK"); 2616 } 2617 if (lastSavedConfigurationAttempt.ephemeral) { 2618 sb.append(" ephemeral"); 2619 } 2620 if (lastSavedConfigurationAttempt.selfAdded) { 2621 sb.append(" selfAdded"); 2622 } 2623 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2624 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2625 } 2626 break; 2627 case WifiManager.FORGET_NETWORK: 2628 sb.append(" "); 2629 sb.append(Integer.toString(msg.arg1)); 2630 sb.append(" "); 2631 sb.append(Integer.toString(msg.arg2)); 2632 if (lastForgetConfigurationAttempt != null) { 2633 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2634 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2635 if (lastForgetConfigurationAttempt.hiddenSSID) { 2636 sb.append(" hidden"); 2637 } 2638 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2639 sb.append(" hasPSK"); 2640 } 2641 if (lastForgetConfigurationAttempt.ephemeral) { 2642 sb.append(" ephemeral"); 2643 } 2644 if (lastForgetConfigurationAttempt.selfAdded) { 2645 sb.append(" selfAdded"); 2646 } 2647 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2648 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2649 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2650 } 2651 break; 2652 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2653 sb.append(" "); 2654 sb.append(Integer.toString(msg.arg1)); 2655 sb.append(" "); 2656 sb.append(Integer.toString(msg.arg2)); 2657 String bssid = (String)msg.obj; 2658 if (bssid != null && bssid.length()>0) { 2659 sb.append(" "); 2660 sb.append(bssid); 2661 } 2662 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2663 sb.append(printTime()); 2664 break; 2665 case WifiMonitor.SCAN_RESULTS_EVENT: 2666 sb.append(" "); 2667 sb.append(Integer.toString(msg.arg1)); 2668 sb.append(" "); 2669 sb.append(Integer.toString(msg.arg2)); 2670 if (mScanResults != null) { 2671 sb.append(" found="); 2672 sb.append(mScanResults.size()); 2673 } 2674 sb.append(" known=").append(mNumScanResultsKnown); 2675 sb.append(" got=").append(mNumScanResultsReturned); 2676 if (lastScanDuration != 0) { 2677 sb.append(" dur:").append(lastScanDuration); 2678 } 2679 if (mOnTime != 0) { 2680 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2681 sb.append(",").append(mOnTime); 2682 } 2683 if (mTxTime != 0) { 2684 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2685 sb.append(",").append(mTxTime); 2686 } 2687 if (mRxTime != 0) { 2688 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2689 sb.append(",").append(mRxTime); 2690 } 2691 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2692 sb.append(String.format(" con=%d", mConnectionRequests)); 2693 key = mWifiConfigStore.getLastSelectedConfiguration(); 2694 if (key != null) { 2695 sb.append(" last=").append(key); 2696 } 2697 break; 2698 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2699 sb.append(" "); 2700 sb.append(Integer.toString(msg.arg1)); 2701 sb.append(" "); 2702 sb.append(Integer.toString(msg.arg2)); 2703 sb.append(" ").append(mLastBssid); 2704 sb.append(" nid=").append(mLastNetworkId); 2705 config = getCurrentWifiConfiguration(); 2706 if (config != null) { 2707 sb.append(" ").append(config.configKey()); 2708 } 2709 sb.append(printTime()); 2710 key = mWifiConfigStore.getLastSelectedConfiguration(); 2711 if (key != null) { 2712 sb.append(" last=").append(key); 2713 } 2714 break; 2715 case CMD_TARGET_BSSID: 2716 case CMD_ASSOCIATED_BSSID: 2717 sb.append(" "); 2718 sb.append(Integer.toString(msg.arg1)); 2719 sb.append(" "); 2720 sb.append(Integer.toString(msg.arg2)); 2721 if (msg.obj != null) { 2722 sb.append(" BSSID=").append((String)msg.obj); 2723 } 2724 if (mTargetRoamBSSID != null) { 2725 sb.append(" Target=").append(mTargetRoamBSSID); 2726 } 2727 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2728 sb.append(printTime()); 2729 break; 2730 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2731 if (msg.obj != null) { 2732 sb.append(" ").append((String)msg.obj); 2733 } 2734 sb.append(" nid=").append(msg.arg1); 2735 sb.append(" reason=").append(msg.arg2); 2736 if (mLastBssid != null) { 2737 sb.append(" lastbssid=").append(mLastBssid); 2738 } 2739 if (mWifiInfo.getFrequency() != -1) { 2740 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2741 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2742 } 2743 if (linkDebouncing) { 2744 sb.append(" debounce"); 2745 } 2746 sb.append(printTime()); 2747 break; 2748 case WifiMonitor.SSID_TEMP_DISABLED: 2749 case WifiMonitor.SSID_REENABLED: 2750 sb.append(" nid=").append(msg.arg1); 2751 if (msg.obj != null) { 2752 sb.append(" ").append((String)msg.obj); 2753 } 2754 config = getCurrentWifiConfiguration(); 2755 if (config != null) { 2756 sb.append(" cur=").append(config.configKey()); 2757 sb.append(" ajst=").append(config.autoJoinStatus); 2758 if (config.selfAdded) { 2759 sb.append(" selfAdded"); 2760 } 2761 if (config.status != 0) { 2762 sb.append(" st=").append(config.status); 2763 sb.append(" rs=").append(config.disableReason); 2764 } 2765 if (config.lastConnected != 0) { 2766 now = System.currentTimeMillis(); 2767 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2768 } 2769 if (mLastBssid != null) { 2770 sb.append(" lastbssid=").append(mLastBssid); 2771 } 2772 if (mWifiInfo.getFrequency() != -1) { 2773 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2774 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2775 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2776 } 2777 } 2778 sb.append(printTime()); 2779 break; 2780 case CMD_RSSI_POLL: 2781 case CMD_UNWANTED_NETWORK: 2782 case WifiManager.RSSI_PKTCNT_FETCH: 2783 sb.append(" "); 2784 sb.append(Integer.toString(msg.arg1)); 2785 sb.append(" "); 2786 sb.append(Integer.toString(msg.arg2)); 2787 if (mWifiInfo.getSSID() != null) 2788 if (mWifiInfo.getSSID() != null) 2789 sb.append(" ").append(mWifiInfo.getSSID()); 2790 if (mWifiInfo.getBSSID() != null) 2791 sb.append(" ").append(mWifiInfo.getBSSID()); 2792 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2793 sb.append(" f=").append(mWifiInfo.getFrequency()); 2794 sb.append(" sc=").append(mWifiInfo.score); 2795 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2796 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2797 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2798 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2799 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2800 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2801 report = reportOnTime(); 2802 if (report != null) { 2803 sb.append(" ").append(report); 2804 } 2805 if (wifiScoringReport != null) { 2806 sb.append(wifiScoringReport); 2807 } 2808 break; 2809 case CMD_AUTO_CONNECT: 2810 case WifiManager.CONNECT_NETWORK: 2811 sb.append(" "); 2812 sb.append(Integer.toString(msg.arg1)); 2813 sb.append(" "); 2814 sb.append(Integer.toString(msg.arg2)); 2815 config = (WifiConfiguration) msg.obj; 2816 if (config != null) { 2817 sb.append(" ").append(config.configKey()); 2818 if (config.visibility != null) { 2819 sb.append(" ").append(config.visibility.toString()); 2820 } 2821 } 2822 if (mTargetRoamBSSID != null) { 2823 sb.append(" ").append(mTargetRoamBSSID); 2824 } 2825 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2826 sb.append(printTime()); 2827 config = getCurrentWifiConfiguration(); 2828 if (config != null) { 2829 sb.append(config.configKey()); 2830 if (config.visibility != null) { 2831 sb.append(" ").append(config.visibility.toString()); 2832 } 2833 } 2834 break; 2835 case CMD_AUTO_ROAM: 2836 sb.append(" "); 2837 sb.append(Integer.toString(msg.arg1)); 2838 sb.append(" "); 2839 sb.append(Integer.toString(msg.arg2)); 2840 ScanResult result = (ScanResult)msg.obj; 2841 if (result != null) { 2842 now = System.currentTimeMillis(); 2843 sb.append(" bssid=").append(result.BSSID); 2844 sb.append(" rssi=").append(result.level); 2845 sb.append(" freq=").append(result.frequency); 2846 if (result.seen > 0 && result.seen < now) { 2847 sb.append(" seen=").append(now - result.seen); 2848 } else { 2849 // Somehow the timestamp for this scan result is inconsistent 2850 sb.append(" !seen=").append(result.seen); 2851 } 2852 } 2853 if (mTargetRoamBSSID != null) { 2854 sb.append(" ").append(mTargetRoamBSSID); 2855 } 2856 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2857 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 2858 sb.append(printTime()); 2859 break; 2860 case CMD_ADD_OR_UPDATE_NETWORK: 2861 sb.append(" "); 2862 sb.append(Integer.toString(msg.arg1)); 2863 sb.append(" "); 2864 sb.append(Integer.toString(msg.arg2)); 2865 if (msg.obj != null) { 2866 config = (WifiConfiguration)msg.obj; 2867 sb.append(" ").append(config.configKey()); 2868 sb.append(" prio=").append(config.priority); 2869 sb.append(" status=").append(config.status); 2870 if (config.BSSID != null) { 2871 sb.append(" ").append(config.BSSID); 2872 } 2873 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 2874 if (curConfig != null) { 2875 if (curConfig.configKey().equals(config.configKey())) { 2876 sb.append(" is current"); 2877 } else { 2878 sb.append(" current=").append(curConfig.configKey()); 2879 sb.append(" prio=").append(curConfig.priority); 2880 sb.append(" status=").append(curConfig.status); 2881 } 2882 } 2883 } 2884 break; 2885 case WifiManager.DISABLE_NETWORK: 2886 case CMD_ENABLE_NETWORK: 2887 sb.append(" "); 2888 sb.append(Integer.toString(msg.arg1)); 2889 sb.append(" "); 2890 sb.append(Integer.toString(msg.arg2)); 2891 key = mWifiConfigStore.getLastSelectedConfiguration(); 2892 if (key != null) { 2893 sb.append(" last=").append(key); 2894 } 2895 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 2896 if (config != null && (key == null || !config.configKey().equals(key))) { 2897 sb.append(" target=").append(key); 2898 } 2899 break; 2900 case CMD_GET_CONFIGURED_NETWORKS: 2901 sb.append(" "); 2902 sb.append(Integer.toString(msg.arg1)); 2903 sb.append(" "); 2904 sb.append(Integer.toString(msg.arg2)); 2905 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 2906 break; 2907 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 2908 sb.append(" "); 2909 sb.append(Integer.toString(msg.arg1)); 2910 sb.append(" "); 2911 sb.append(Integer.toString(msg.arg2)); 2912 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2913 sb.append(",").append(mWifiInfo.txBad); 2914 sb.append(",").append(mWifiInfo.txRetries); 2915 break; 2916 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 2917 sb.append(" "); 2918 sb.append(Integer.toString(msg.arg1)); 2919 sb.append(" "); 2920 sb.append(Integer.toString(msg.arg2)); 2921 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 2922 sb.append(" OK "); 2923 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 2924 sb.append(" FAIL "); 2925 } 2926 if (mLinkProperties != null) { 2927 if (mLinkProperties.hasIPv4Address()) { 2928 sb.append(" v4"); 2929 } 2930 if (mLinkProperties.hasGlobalIPv6Address()) { 2931 sb.append(" v6"); 2932 } 2933 if (mLinkProperties.hasIPv4DefaultRoute()) { 2934 sb.append(" v4r"); 2935 } 2936 if (mLinkProperties.hasIPv6DefaultRoute()) { 2937 sb.append(" v6r"); 2938 } 2939 if (mLinkProperties.hasIPv4DnsServer()) { 2940 sb.append(" v4dns"); 2941 } 2942 if (mLinkProperties.hasIPv6DnsServer()) { 2943 sb.append(" v6dns"); 2944 } 2945 } 2946 break; 2947 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 2948 sb.append(" "); 2949 sb.append(Integer.toString(msg.arg1)); 2950 sb.append(" "); 2951 sb.append(Integer.toString(msg.arg2)); 2952 if (msg.obj != null) { 2953 NetworkInfo info = (NetworkInfo)msg.obj; 2954 NetworkInfo.State state = info.getState(); 2955 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 2956 if (state != null) { 2957 sb.append(" st=").append(state); 2958 } 2959 if (detailedState != null) { 2960 sb.append("/").append(detailedState); 2961 } 2962 } 2963 break; 2964 case CMD_IP_CONFIGURATION_LOST: 2965 int count = -1; 2966 WifiConfiguration c = getCurrentWifiConfiguration(); 2967 if (c != null) count = c.numIpConfigFailures; 2968 sb.append(" "); 2969 sb.append(Integer.toString(msg.arg1)); 2970 sb.append(" "); 2971 sb.append(Integer.toString(msg.arg2)); 2972 sb.append(" failures: "); 2973 sb.append(Integer.toString(count)); 2974 sb.append("/"); 2975 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 2976 if (mWifiInfo.getBSSID() != null) { 2977 sb.append(" ").append(mWifiInfo.getBSSID()); 2978 } 2979 if (c != null) { 2980 if (c.scanResultCache != null) { 2981 for (ScanResult r : c.scanResultCache.values()) { 2982 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 2983 sb.append(" ipfail=").append(r.numIpConfigFailures); 2984 sb.append(",st=").append(r.autoJoinStatus); 2985 } 2986 } 2987 } 2988 sb.append(" -> ajst=").append(c.autoJoinStatus); 2989 sb.append(" ").append(c.disableReason); 2990 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2991 sb.append(",").append(mWifiInfo.txBad); 2992 sb.append(",").append(mWifiInfo.txRetries); 2993 } 2994 sb.append(printTime()); 2995 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2996 break; 2997 case CMD_UPDATE_LINKPROPERTIES: 2998 sb.append(" "); 2999 sb.append(Integer.toString(msg.arg1)); 3000 sb.append(" "); 3001 sb.append(Integer.toString(msg.arg2)); 3002 if (mLinkProperties != null) { 3003 if (mLinkProperties.hasIPv4Address()) { 3004 sb.append(" v4"); 3005 } 3006 if (mLinkProperties.hasGlobalIPv6Address()) { 3007 sb.append(" v6"); 3008 } 3009 if (mLinkProperties.hasIPv4DefaultRoute()) { 3010 sb.append(" v4r"); 3011 } 3012 if (mLinkProperties.hasIPv6DefaultRoute()) { 3013 sb.append(" v6r"); 3014 } 3015 if (mLinkProperties.hasIPv4DnsServer()) { 3016 sb.append(" v4dns"); 3017 } 3018 if (mLinkProperties.hasIPv6DnsServer()) { 3019 sb.append(" v6dns"); 3020 } 3021 } 3022 break; 3023 case CMD_SET_COUNTRY_CODE: 3024 sb.append(" "); 3025 sb.append(Integer.toString(msg.arg1)); 3026 sb.append(" "); 3027 sb.append(Integer.toString(msg.arg2)); 3028 if (msg.obj != null) { 3029 sb.append(" ").append((String)msg.obj); 3030 } 3031 break; 3032 case CMD_ROAM_WATCHDOG_TIMER: 3033 sb.append(" "); 3034 sb.append(Integer.toString(msg.arg1)); 3035 sb.append(" "); 3036 sb.append(Integer.toString(msg.arg2)); 3037 sb.append(" cur=").append(roamWatchdogCount); 3038 break; 3039 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3040 sb.append(" "); 3041 sb.append(Integer.toString(msg.arg1)); 3042 sb.append(" "); 3043 sb.append(Integer.toString(msg.arg2)); 3044 sb.append(" cur=").append(disconnectingWatchdogCount); 3045 break; 3046 default: 3047 sb.append(" "); 3048 sb.append(Integer.toString(msg.arg1)); 3049 sb.append(" "); 3050 sb.append(Integer.toString(msg.arg2)); 3051 break; 3052 } 3053 3054 return sb.toString(); 3055 } 3056 3057 private void handleScreenStateChanged(boolean screenOn, boolean startBackgroundScanIfNeeded) { 3058 mScreenOn = screenOn; 3059 if (PDBG) { 3060 loge(" handleScreenStateChanged Enter: screenOn=" + screenOn 3061 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3062 + " state " + getCurrentState().getName() 3063 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3064 } 3065 enableRssiPolling(screenOn); 3066 if (screenOn) enableAllNetworks(); 3067 if (mUserWantsSuspendOpt.get()) { 3068 if (screenOn) { 3069 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3070 } else { 3071 // Allow 2s for suspend optimizations to be set 3072 mSuspendWakeLock.acquire(2000); 3073 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3074 } 3075 } 3076 mScreenBroadcastReceived.set(true); 3077 3078 getWifiLinkLayerStats(false); 3079 mOnTimeScreenStateChange = mOnTime; 3080 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3081 mEnableBackgroundScan = false; 3082 cancelDelayedScan(); 3083 3084 if (screenOn) { 3085 setScanAlarm(false); 3086 clearBlacklist(); 3087 3088 fullBandConnectedTimeIntervalMilli = mWifiConfigStore.associatedPartialScanPeriodMilli.get(); 3089 // In either Disconnectedstate or ConnectedState, 3090 // start the scan alarm so as to enable autojoin 3091 if (getCurrentState() == mConnectedState 3092 && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 3093 // Scan after 500ms 3094 startDelayedScan(500, null, null); 3095 } else if (getCurrentState() == mDisconnectedState) { 3096 // Scan after 200ms 3097 startDelayedScan(200, null, null); 3098 } 3099 } else if (startBackgroundScanIfNeeded) { 3100 // Screen Off and Disconnected and chipset doesn't support scan offload 3101 // => start scan alarm 3102 // Screen Off and Disconnected and chipset does support scan offload 3103 // => will use scan offload (i.e. background scan) 3104 if (!mBackgroundScanSupported) { 3105 setScanAlarm(true); 3106 } else { 3107 mEnableBackgroundScan = true; 3108 } 3109 } 3110 if (DBG) logd("backgroundScan enabled=" + mEnableBackgroundScan 3111 + " startBackgroundScanIfNeeded:" + startBackgroundScanIfNeeded); 3112 if (startBackgroundScanIfNeeded) { 3113 // to scan for them in background, we need all networks enabled 3114 enableBackgroundScan(mEnableBackgroundScan); 3115 } 3116 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3117 } 3118 3119 private void checkAndSetConnectivityInstance() { 3120 if (mCm == null) { 3121 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3122 } 3123 } 3124 3125 private boolean startTethering(ArrayList<String> available) { 3126 3127 boolean wifiAvailable = false; 3128 3129 checkAndSetConnectivityInstance(); 3130 3131 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3132 3133 for (String intf : available) { 3134 for (String regex : wifiRegexs) { 3135 if (intf.matches(regex)) { 3136 3137 InterfaceConfiguration ifcg = null; 3138 try { 3139 ifcg = mNwService.getInterfaceConfig(intf); 3140 if (ifcg != null) { 3141 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3142 ifcg.setLinkAddress(new LinkAddress( 3143 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3144 ifcg.setInterfaceUp(); 3145 3146 mNwService.setInterfaceConfig(intf, ifcg); 3147 } 3148 } catch (Exception e) { 3149 loge("Error configuring interface " + intf + ", :" + e); 3150 return false; 3151 } 3152 3153 if(mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3154 loge("Error tethering on " + intf); 3155 return false; 3156 } 3157 mTetherInterfaceName = intf; 3158 return true; 3159 } 3160 } 3161 } 3162 // We found no interfaces to tether 3163 return false; 3164 } 3165 3166 private void stopTethering() { 3167 3168 checkAndSetConnectivityInstance(); 3169 3170 /* Clear the interface config to allow dhcp correctly configure new 3171 ip settings */ 3172 InterfaceConfiguration ifcg = null; 3173 try { 3174 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3175 if (ifcg != null) { 3176 ifcg.setLinkAddress( 3177 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3178 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3179 } 3180 } catch (Exception e) { 3181 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3182 } 3183 3184 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3185 loge("Untether initiate failed!"); 3186 } 3187 } 3188 3189 private boolean isWifiTethered(ArrayList<String> active) { 3190 3191 checkAndSetConnectivityInstance(); 3192 3193 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3194 for (String intf : active) { 3195 for (String regex : wifiRegexs) { 3196 if (intf.matches(regex)) { 3197 return true; 3198 } 3199 } 3200 } 3201 // We found no interfaces that are tethered 3202 return false; 3203 } 3204 3205 /** 3206 * Set the country code from the system setting value, if any. 3207 */ 3208 private void setCountryCode() { 3209 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 3210 Settings.Global.WIFI_COUNTRY_CODE); 3211 if (countryCode != null && !countryCode.isEmpty()) { 3212 setCountryCode(countryCode, false); 3213 } else { 3214 //use driver default 3215 } 3216 } 3217 3218 /** 3219 * Set the frequency band from the system setting value, if any. 3220 */ 3221 private void setFrequencyBand() { 3222 int band = Settings.Global.getInt(mContext.getContentResolver(), 3223 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3224 setFrequencyBand(band, false); 3225 } 3226 3227 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3228 if (DBG) { 3229 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3230 + " -want " + mUserWantsSuspendOpt.get() 3231 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3232 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 3233 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 3234 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 3235 } 3236 //mWifiNative.setSuspendOptimizations(enabled); 3237 3238 if (enabled) { 3239 mSuspendOptNeedsDisabled &= ~reason; 3240 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3241 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3242 if (DBG) { 3243 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3244 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3245 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 3246 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 3247 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 3248 } 3249 mWifiNative.setSuspendOptimizations(true); 3250 } 3251 } else { 3252 mSuspendOptNeedsDisabled |= reason; 3253 mWifiNative.setSuspendOptimizations(false); 3254 } 3255 } 3256 3257 private void setSuspendOptimizations(int reason, boolean enabled) { 3258 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3259 if (enabled) { 3260 mSuspendOptNeedsDisabled &= ~reason; 3261 } else { 3262 mSuspendOptNeedsDisabled |= reason; 3263 } 3264 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3265 } 3266 3267 private void setWifiState(int wifiState) { 3268 final int previousWifiState = mWifiState.get(); 3269 3270 try { 3271 if (wifiState == WIFI_STATE_ENABLED) { 3272 mBatteryStats.noteWifiOn(); 3273 } else if (wifiState == WIFI_STATE_DISABLED) { 3274 mBatteryStats.noteWifiOff(); 3275 } 3276 } catch (RemoteException e) { 3277 loge("Failed to note battery stats in wifi"); 3278 } 3279 3280 mWifiState.set(wifiState); 3281 3282 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3283 3284 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3285 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3286 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3287 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3288 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3289 } 3290 3291 private void setWifiApState(int wifiApState) { 3292 final int previousWifiApState = mWifiApState.get(); 3293 3294 try { 3295 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3296 mBatteryStats.noteWifiOn(); 3297 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3298 mBatteryStats.noteWifiOff(); 3299 } 3300 } catch (RemoteException e) { 3301 loge("Failed to note battery stats in wifi"); 3302 } 3303 3304 // Update state 3305 mWifiApState.set(wifiApState); 3306 3307 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3308 3309 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3310 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3311 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3312 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3313 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3314 } 3315 3316 /* 3317 void ageOutScanResults(int age) { 3318 synchronized(mScanResultCache) { 3319 // Trim mScanResults, which prevent WifiStateMachine to return 3320 // obsolete scan results to queriers 3321 long now = System.CurrentTimeMillis(); 3322 for (int i = 0; i < mScanResults.size(); i++) { 3323 ScanResult result = mScanResults.get(i); 3324 if ((result.seen > now || (now - result.seen) > age)) { 3325 mScanResults.remove(i); 3326 } 3327 } 3328 } 3329 }*/ 3330 3331 private static final String IE_STR = "ie="; 3332 private static final String ID_STR = "id="; 3333 private static final String BSSID_STR = "bssid="; 3334 private static final String FREQ_STR = "freq="; 3335 private static final String LEVEL_STR = "level="; 3336 private static final String TSF_STR = "tsf="; 3337 private static final String FLAGS_STR = "flags="; 3338 private static final String SSID_STR = "ssid="; 3339 private static final String DELIMITER_STR = "===="; 3340 private static final String END_STR = "####"; 3341 3342 int emptyScanResultCount = 0; 3343 3344 /** 3345 * Format: 3346 * 3347 * id=1 3348 * bssid=68:7f:76:d7:1a:6e 3349 * freq=2412 3350 * level=-44 3351 * tsf=1344626243700342 3352 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3353 * ssid=zfdy 3354 * ==== 3355 * id=2 3356 * bssid=68:5f:74:d7:1a:6f 3357 * freq=5180 3358 * level=-73 3359 * tsf=1344626243700373 3360 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3361 * ssid=zuby 3362 * ==== 3363 */ 3364 private void setScanResults() { 3365 mNumScanResultsKnown = 0; 3366 mNumScanResultsReturned = 0; 3367 String bssid = ""; 3368 int level = 0; 3369 int freq = 0; 3370 long tsf = 0; 3371 String flags = ""; 3372 WifiSsid wifiSsid = null; 3373 String scanResults; 3374 String tmpResults; 3375 StringBuffer scanResultsBuf = new StringBuffer(); 3376 int sid = 0; 3377 3378 while (true) { 3379 tmpResults = mWifiNative.scanResults(sid); 3380 if (TextUtils.isEmpty(tmpResults)) break; 3381 scanResultsBuf.append(tmpResults); 3382 scanResultsBuf.append("\n"); 3383 String[] lines = tmpResults.split("\n"); 3384 sid = -1; 3385 for (int i=lines.length - 1; i >= 0; i--) { 3386 if (lines[i].startsWith(END_STR)) { 3387 break; 3388 } else if (lines[i].startsWith(ID_STR)) { 3389 try { 3390 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3391 } catch (NumberFormatException e) { 3392 // Nothing to do 3393 } 3394 break; 3395 } 3396 } 3397 if (sid == -1) break; 3398 } 3399 3400 // Age out scan results, we return all scan results found in the last 12 seconds, 3401 // and NOT all scan results since last scan. 3402 // ageOutScanResults(12000); 3403 3404 scanResults = scanResultsBuf.toString(); 3405 if (TextUtils.isEmpty(scanResults)) { 3406 emptyScanResultCount++; 3407 if (emptyScanResultCount > 10) { 3408 // If we got too many empty scan results, the current scan cache is stale, 3409 // hence clear it. 3410 mScanResults = new ArrayList<>(); 3411 } 3412 return; 3413 } 3414 3415 emptyScanResultCount = 0; 3416 3417 // note that all these splits and substrings keep references to the original 3418 // huge string buffer while the amount we really want is generally pretty small 3419 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3420 synchronized(mScanResultCache) { 3421 mScanResults = new ArrayList<>(); 3422 String[] lines = scanResults.split("\n"); 3423 final int bssidStrLen = BSSID_STR.length(); 3424 final int flagLen = FLAGS_STR.length(); 3425 String infoElements = null; 3426 List<String> anqpLines = null; 3427 3428 for (String line : lines) { 3429 if (line.startsWith(BSSID_STR)) { 3430 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3431 } else if (line.startsWith(FREQ_STR)) { 3432 try { 3433 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3434 } catch (NumberFormatException e) { 3435 freq = 0; 3436 } 3437 } else if (line.startsWith(LEVEL_STR)) { 3438 try { 3439 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3440 /* some implementations avoid negative values by adding 256 3441 * so we need to adjust for that here. 3442 */ 3443 if (level > 0) level -= 256; 3444 } catch(NumberFormatException e) { 3445 level = 0; 3446 } 3447 } else if (line.startsWith(TSF_STR)) { 3448 try { 3449 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3450 } catch (NumberFormatException e) { 3451 tsf = 0; 3452 } 3453 } else if (line.startsWith(FLAGS_STR)) { 3454 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3455 } else if (line.startsWith(SSID_STR)) { 3456 wifiSsid = WifiSsid.createFromAsciiEncoded( 3457 line.substring(SSID_STR.length())); 3458 } else if (line.startsWith(IE_STR)) { 3459 infoElements = line; 3460 } else if (SupplicantBridge.isAnqpAttribute(line)) { 3461 if (anqpLines == null) { 3462 anqpLines = new ArrayList<>(); 3463 } 3464 anqpLines.add(line); 3465 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3466 if (bssid != null) { 3467 NetworkDetail networkDetail = 3468 new NetworkDetail(bssid, infoElements, anqpLines); 3469 3470 String xssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3471 if (!xssid.equals(networkDetail.getSSID())) { 3472 Log.d("HS2J", "Inconsistency: SSID: '" + xssid + 3473 "' vs '" + networkDetail.getSSID() + "'"); 3474 } 3475 3476 ScanDetail scanDetail = mScanResultCache.get(networkDetail); 3477 if (scanDetail != null) { 3478 scanDetail.updateResults(level, wifiSsid, xssid, flags, freq, tsf); 3479 ScanDetail update = 3480 mSelectionManager.scoreNetwork(scanDetail); 3481 if (update != null) { 3482 mScanResultCache.put(networkDetail, update); 3483 } 3484 } 3485 else { 3486 scanDetail = new ScanDetail(networkDetail, wifiSsid, bssid, 3487 flags, level, freq, tsf); 3488 ScanDetail update = 3489 mSelectionManager.scoreNetwork(scanDetail); 3490 if (update != null) { 3491 scanDetail = update; 3492 } 3493 mScanResultCache.put(networkDetail, scanDetail); 3494 } 3495 3496 mNumScanResultsReturned ++; // Keep track of how many scan results we got 3497 // as part of this scan's processing 3498 3499 mScanResults.add(scanDetail); 3500 } 3501 bssid = null; 3502 level = 0; 3503 freq = 0; 3504 tsf = 0; 3505 flags = ""; 3506 wifiSsid = null; 3507 infoElements = null; 3508 anqpLines = null; 3509 } 3510 } 3511 } 3512 3513 boolean attemptAutoJoin = true; 3514 SupplicantState state = mWifiInfo.getSupplicantState(); 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 || mConnectionRequests == 0) { 3527 // Dont attempt auto-joining again while we are already attempting to join 3528 // and/or obtaining Ip address 3529 attemptAutoJoin = false; 3530 } 3531 if (DBG) { 3532 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 3533 if (selection == null) { 3534 selection = "<none>"; 3535 } 3536 loge("wifi setScanResults state" + getCurrentState() 3537 + " sup_state=" + state 3538 + " debouncing=" + linkDebouncing 3539 + " mConnectionRequests=" + mConnectionRequests 3540 + " selection=" + selection); 3541 } 3542 if (attemptAutoJoin) { 3543 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 3544 } 3545 // Loose last selected configuration if we have been disconnected for 5 minutes 3546 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 3547 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 3548 } 3549 3550 if (mWifiConfigStore.enableAutoJoinWhenAssociated.get()) { 3551 synchronized(mScanResultCache) { 3552 // AutoJoincontroller will directly acces the scan result list and update it with 3553 // ScanResult status 3554 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 3555 } 3556 } 3557 if (linkDebouncing) { 3558 // If debouncing, we dont re-select a SSID or BSSID hence 3559 // there is no need to call the network selection code 3560 // in WifiAutoJoinController, instead, 3561 // just try to reconnect to the same SSID by triggering a roam 3562 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3563 } 3564 } 3565 3566 public void updateScanResults(ScanDetail network, Map<HomeSP, PasspointMatch> matches) { 3567 synchronized (mScanResultCache) { 3568 mScanResultCache.put(network.getNetworkDetail(), network.score(matches)); 3569 } 3570 } 3571 3572 /* 3573 * Fetch RSSI, linkspeed, and frequency on current connection 3574 */ 3575 private void fetchRssiLinkSpeedAndFrequencyNative() { 3576 int newRssi = -1; 3577 int newLinkSpeed = -1; 3578 int newFrequency = -1; 3579 3580 String signalPoll = mWifiNative.signalPoll(); 3581 3582 if (signalPoll != null) { 3583 String[] lines = signalPoll.split("\n"); 3584 for (String line : lines) { 3585 String[] prop = line.split("="); 3586 if (prop.length < 2) continue; 3587 try { 3588 if (prop[0].equals("RSSI")) { 3589 newRssi = Integer.parseInt(prop[1]); 3590 } else if (prop[0].equals("LINKSPEED")) { 3591 newLinkSpeed = Integer.parseInt(prop[1]); 3592 } else if (prop[0].equals("FREQUENCY")) { 3593 newFrequency = Integer.parseInt(prop[1]); 3594 } 3595 } catch (NumberFormatException e) { 3596 //Ignore, defaults on rssi and linkspeed are assigned 3597 } 3598 } 3599 } 3600 3601 if (PDBG) { 3602 loge("fetchRssiLinkSpeedAndFrequencyNative rssi=" 3603 + Integer.toString(newRssi) + " linkspeed=" 3604 + Integer.toString(newLinkSpeed)); 3605 } 3606 3607 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 3608 // screen out invalid values 3609 /* some implementations avoid negative values by adding 256 3610 * so we need to adjust for that here. 3611 */ 3612 if (newRssi > 0) newRssi -= 256; 3613 mWifiInfo.setRssi(newRssi); 3614 /* 3615 * Rather then sending the raw RSSI out every time it 3616 * changes, we precalculate the signal level that would 3617 * be displayed in the status bar, and only send the 3618 * broadcast if that much more coarse-grained number 3619 * changes. This cuts down greatly on the number of 3620 * broadcasts, at the cost of not informing others 3621 * interested in RSSI of all the changes in signal 3622 * level. 3623 */ 3624 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 3625 if (newSignalLevel != mLastSignalLevel) { 3626 sendRssiChangeBroadcast(newRssi); 3627 } 3628 mLastSignalLevel = newSignalLevel; 3629 } else { 3630 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 3631 } 3632 3633 if (newLinkSpeed != -1) { 3634 mWifiInfo.setLinkSpeed(newLinkSpeed); 3635 } 3636 if (newFrequency > 0) { 3637 if (ScanResult.is5GHz(newFrequency)) { 3638 mWifiConnectionStatistics.num5GhzConnected++; 3639 } 3640 if (ScanResult.is24GHz(newFrequency)) { 3641 mWifiConnectionStatistics.num24GhzConnected++; 3642 } 3643 mWifiInfo.setFrequency(newFrequency); 3644 } 3645 mWifiConfigStore.updateConfiguration(mWifiInfo); 3646 } 3647 3648 /** 3649 * Determine if we need to switch network: 3650 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 3651 * - match the uregncy of the switch versus the packet usage at the interface 3652 */ 3653 boolean shouldSwitchNetwork(int networkDelta) { 3654 int delta; 3655 if (networkDelta <= 0) { 3656 return false; 3657 } 3658 delta = networkDelta; 3659 if (mWifiInfo != null) { 3660 if (!mWifiConfigStore.enableAutoJoinWhenAssociated.get() 3661 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 3662 // If AutoJoin while associated is not enabled, 3663 // we should never switch network when already associated 3664 delta = -1000; 3665 } else { 3666 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 3667 // TODO: at the interface. We should also discriminate between ucast and mcast, 3668 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 3669 // TODO: broadcasts 3670 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 3671 delta -= 999; 3672 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 3673 delta -= 6; 3674 } 3675 loge("WifiStateMachine shouldSwitchNetwork " 3676 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3677 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3678 + " delta " + networkDelta + " -> " + delta); 3679 } 3680 } else { 3681 loge("WifiStateMachine shouldSwitchNetwork " 3682 + " delta " + networkDelta + " -> " + delta); 3683 } 3684 if (delta > 0) { 3685 return true; 3686 } 3687 return false; 3688 } 3689 3690 // Polling has completed, hence we wont have a score anymore 3691 private void cleanWifiScore() { 3692 mWifiInfo.txBadRate = 0; 3693 mWifiInfo.txSuccessRate = 0; 3694 mWifiInfo.txRetriesRate = 0; 3695 mWifiInfo.rxSuccessRate = 0; 3696 } 3697 3698 int mBadLinkspeedcount = 0; 3699 3700 // For debug, provide information about the last scoring operation 3701 String wifiScoringReport = null; 3702 private void calculateWifiScore(WifiLinkLayerStats stats) { 3703 StringBuilder sb = new StringBuilder(); 3704 3705 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 3706 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 3707 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 3708 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3709 < mWifiConfigStore.badLinkSpeed5); 3710 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 3711 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 3712 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3713 >= mWifiConfigStore.goodLinkSpeed5); 3714 3715 if (isBadLinkspeed) { 3716 if (mBadLinkspeedcount < 6) 3717 mBadLinkspeedcount++; 3718 } else { 3719 if (mBadLinkspeedcount > 0) 3720 mBadLinkspeedcount--; 3721 } 3722 3723 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 3724 if (isGoodLinkspeed) sb.append(" gl"); 3725 3726 /** 3727 * We want to make sure that we use the 24GHz RSSI thresholds if 3728 * there are 2.4GHz scan results 3729 * otherwise we end up lowering the score based on 5GHz values 3730 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 3731 * We also might unblacklist the configuation based on 2.4GHz 3732 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 3733 */ 3734 boolean use24Thresholds = false; 3735 boolean homeNetworkBoost = false; 3736 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 3737 if (currentConfiguration != null 3738 && currentConfiguration.scanResultCache != null) { 3739 currentConfiguration.setVisibility(12000); 3740 if (currentConfiguration.visibility != null) { 3741 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 3742 && currentConfiguration.visibility.rssi24 3743 >= (currentConfiguration.visibility.rssi5-2)) { 3744 use24Thresholds = true; 3745 } 3746 } 3747 if (currentConfiguration.scanResultCache.size() <= 6 3748 && currentConfiguration.allowedKeyManagement.cardinality() == 1 3749 && currentConfiguration.allowedKeyManagement. 3750 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 3751 // A PSK network with less than 6 known BSSIDs 3752 // This is most likely a home network and thus we want to stick to wifi more 3753 homeNetworkBoost = true; 3754 } 3755 } 3756 if (homeNetworkBoost) sb.append(" hn"); 3757 if (use24Thresholds) sb.append(" u24"); 3758 3759 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 3760 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 3761 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 3762 3763 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 3764 3765 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 3766 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 3767 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 3768 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 3769 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 3770 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 3771 3772 if (isBadRSSI) sb.append(" br"); 3773 if (isLowRSSI) sb.append(" lr"); 3774 if (isHighRSSI) sb.append(" hr"); 3775 3776 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 3777 if (currentConfiguration!= null && 3778 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 3779 if (isBadRSSI) { 3780 currentConfiguration.numTicksAtBadRSSI++; 3781 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 3782 // We remained associated for a compound amount of time while passing 3783 // traffic, hence loose the corresponding user triggered disabled stats 3784 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 3785 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 3786 } 3787 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3788 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3789 } 3790 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3791 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3792 } 3793 currentConfiguration.numTicksAtBadRSSI = 0; 3794 } 3795 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3796 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 3797 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3798 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3799 score = score -5; 3800 penalizedDueToUserTriggeredDisconnect = 1; 3801 sb.append(" p1"); 3802 } 3803 } else if (isLowRSSI) { 3804 currentConfiguration.numTicksAtLowRSSI++; 3805 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 3806 // We remained associated for a compound amount of time while passing 3807 // traffic, hence loose the corresponding user triggered disabled stats 3808 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3809 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3810 } 3811 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3812 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3813 } 3814 currentConfiguration.numTicksAtLowRSSI = 0; 3815 } 3816 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3817 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3818 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3819 score = score -5; 3820 penalizedDueToUserTriggeredDisconnect = 2; 3821 sb.append(" p2"); 3822 } 3823 } else if (!isHighRSSI) { 3824 currentConfiguration.numTicksAtNotHighRSSI++; 3825 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 3826 // We remained associated for a compound amount of time while passing 3827 // traffic, hence loose the corresponding user triggered disabled stats 3828 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3829 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3830 } 3831 currentConfiguration.numTicksAtNotHighRSSI = 0; 3832 } 3833 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3834 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3835 score = score -5; 3836 penalizedDueToUserTriggeredDisconnect = 3; 3837 sb.append(" p3"); 3838 } 3839 } 3840 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 3841 currentConfiguration.numTicksAtLowRSSI, 3842 currentConfiguration.numTicksAtNotHighRSSI)); 3843 } 3844 3845 if (PDBG) { 3846 String rssiStatus = ""; 3847 if (isBadRSSI) rssiStatus += " badRSSI "; 3848 else if (isHighRSSI) rssiStatus += " highRSSI "; 3849 else if (isLowRSSI) rssiStatus += " lowRSSI "; 3850 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 3851 loge("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 3852 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 3853 + " score=" + Integer.toString(mWifiInfo.score) 3854 + rssiStatus 3855 + " -> txbadrate=" + String.format( "%.2f", mWifiInfo.txBadRate ) 3856 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3857 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 3858 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3859 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 3860 } 3861 3862 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 3863 && (isBadRSSI || isLowRSSI)) { 3864 // Link is stuck 3865 if (mWifiInfo.linkStuckCount < 5) 3866 mWifiInfo.linkStuckCount += 1; 3867 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 3868 if (PDBG) loge(" bad link -> stuck count =" 3869 + Integer.toString(mWifiInfo.linkStuckCount)); 3870 } else if (mWifiInfo.txSuccessRate > 2 || mWifiInfo.txBadRate < 0.1) { 3871 if (mWifiInfo.linkStuckCount > 0) 3872 mWifiInfo.linkStuckCount -= 1; 3873 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 3874 if (PDBG) loge(" good link -> stuck count =" 3875 + Integer.toString(mWifiInfo.linkStuckCount)); 3876 } 3877 3878 sb.append(String.format(" [%d", score)); 3879 3880 if (mWifiInfo.linkStuckCount > 1) { 3881 // Once link gets stuck for more than 3 seconds, start reducing the score 3882 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 3883 } 3884 sb.append(String.format(",%d", score)); 3885 3886 if (isBadLinkspeed) { 3887 score -= 4 ; 3888 if (PDBG) { 3889 loge(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 3890 + " score=" + Integer.toString(score)); 3891 } 3892 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 3893 score += 4; // So as bad rssi alone dont kill us 3894 } 3895 sb.append(String.format(",%d", score)); 3896 3897 if (isBadRSSI) { 3898 if (mWifiInfo.badRssiCount < 7) 3899 mWifiInfo.badRssiCount += 1; 3900 } else if (isLowRSSI) { 3901 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 3902 if (mWifiInfo.badRssiCount > 0) { 3903 // Decrement bad Rssi count 3904 mWifiInfo.badRssiCount -= 1; 3905 } 3906 } else { 3907 mWifiInfo.badRssiCount = 0; 3908 mWifiInfo.lowRssiCount = 0; 3909 } 3910 3911 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount ; 3912 sb.append(String.format(",%d", score)); 3913 3914 if (PDBG) loge(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 3915 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 3916 + " --> score " + Integer.toString(score)); 3917 3918 3919 if (isHighRSSI) { 3920 score += 5; 3921 if (PDBG) loge(" isHighRSSI ---> score=" + Integer.toString(score)); 3922 } 3923 sb.append(String.format(",%d]", score)); 3924 3925 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 3926 3927 //sanitize boundaries 3928 if (score > NetworkAgent.WIFI_BASE_SCORE) 3929 score = NetworkAgent.WIFI_BASE_SCORE; 3930 if (score < 0) 3931 score = 0; 3932 3933 //report score 3934 if (score != mWifiInfo.score) { 3935 if (DBG) { 3936 loge("calculateWifiScore() report new score " + Integer.toString(score)); 3937 } 3938 mWifiInfo.score = score; 3939 if (mNetworkAgent != null) { 3940 mNetworkAgent.sendNetworkScore(score); 3941 } 3942 } 3943 wifiScoringReport = sb.toString(); 3944 } 3945 3946 public double getTxPacketRate() { 3947 if (mWifiInfo != null) { 3948 return mWifiInfo.txSuccessRate; 3949 } 3950 return -1; 3951 } 3952 3953 public double getRxPacketRate() { 3954 if (mWifiInfo != null) { 3955 return mWifiInfo.rxSuccessRate; 3956 } 3957 return -1; 3958 } 3959 3960 /** 3961 * Fetch TX packet counters on current connection 3962 */ 3963 private void fetchPktcntNative(RssiPacketCountInfo info) { 3964 String pktcntPoll = mWifiNative.pktcntPoll(); 3965 3966 if (pktcntPoll != null) { 3967 String[] lines = pktcntPoll.split("\n"); 3968 for (String line : lines) { 3969 String[] prop = line.split("="); 3970 if (prop.length < 2) continue; 3971 try { 3972 if (prop[0].equals("TXGOOD")) { 3973 info.txgood = Integer.parseInt(prop[1]); 3974 } else if (prop[0].equals("TXBAD")) { 3975 info.txbad = Integer.parseInt(prop[1]); 3976 } 3977 } catch (NumberFormatException e) { 3978 // Ignore 3979 } 3980 } 3981 } 3982 } 3983 3984 private boolean clearIPv4Address(String iface) { 3985 try { 3986 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 3987 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 3988 mNwService.setInterfaceConfig(iface, ifcg); 3989 return true; 3990 } catch (RemoteException e) { 3991 return false; 3992 } 3993 } 3994 3995 private boolean isProvisioned(LinkProperties lp) { 3996 return lp.isProvisioned() || 3997 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 3998 } 3999 4000 /** 4001 * Updates mLinkProperties by merging information from various sources. 4002 * 4003 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 4004 * netlink, static configuration, ...). When one of these sources of information has updated 4005 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 4006 * information that came from other sources. Instead, when one of those sources has new 4007 * information, we update the object that tracks the information from that source and then 4008 * call this method to apply the change to mLinkProperties. 4009 * 4010 * The information in mLinkProperties is currently obtained as follows: 4011 * - Interface name: set in the constructor. 4012 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4013 * - IPv4 routes, DNS servers, and domains: DHCP. 4014 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4015 * - HTTP proxy: the wifi config store. 4016 */ 4017 private void updateLinkProperties(int reason) { 4018 LinkProperties newLp = new LinkProperties(); 4019 4020 // Interface name and proxy are locally configured. 4021 newLp.setInterfaceName(mInterfaceName); 4022 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4023 4024 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4025 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4026 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4027 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4028 newLp.addRoute(route); 4029 } 4030 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4031 newLp.addDnsServer(dns); 4032 } 4033 4034 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4035 synchronized (mDhcpResultsLock) { 4036 // Even when we're using static configuration, we don't need to look at the config 4037 // store, because static IP configuration also populates mDhcpResults. 4038 if ((mDhcpResults != null)) { 4039 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4040 newLp.addRoute(route); 4041 } 4042 for (InetAddress dns : mDhcpResults.dnsServers) { 4043 newLp.addDnsServer(dns); 4044 } 4045 newLp.setDomains(mDhcpResults.domains); 4046 } 4047 } 4048 4049 final boolean linkChanged = !newLp.equals(mLinkProperties); 4050 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4051 final boolean isProvisioned = isProvisioned(newLp); 4052 final DetailedState detailedState = getNetworkDetailedState(); 4053 4054 if (linkChanged) { 4055 if (DBG) { 4056 log("Link configuration changed for netId: " + mLastNetworkId 4057 + " old: " + mLinkProperties + " new: " + newLp); 4058 } 4059 mLinkProperties = newLp; 4060 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 4061 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 4062 } 4063 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4064 } 4065 4066 if (DBG) { 4067 StringBuilder sb = new StringBuilder(); 4068 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4069 sb.append(" state: " + detailedState); 4070 sb.append(" reason: " + smToString(reason)); 4071 4072 if (mLinkProperties != null) { 4073 if (mLinkProperties.hasIPv4Address()) { 4074 sb.append(" v4"); 4075 } 4076 if (mLinkProperties.hasGlobalIPv6Address()) { 4077 sb.append(" v6"); 4078 } 4079 if (mLinkProperties.hasIPv4DefaultRoute()) { 4080 sb.append(" v4r"); 4081 } 4082 if (mLinkProperties.hasIPv6DefaultRoute()) { 4083 sb.append(" v6r"); 4084 } 4085 if (mLinkProperties.hasIPv4DnsServer()) { 4086 sb.append(" v4dns"); 4087 } 4088 if (mLinkProperties.hasIPv6DnsServer()) { 4089 sb.append(" v6dns"); 4090 } 4091 if (isProvisioned) { 4092 sb.append(" isprov"); 4093 } 4094 } 4095 loge(sb.toString()); 4096 } 4097 4098 // If we just configured or lost IP configuration, do the needful. 4099 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4100 // here because those should only be called if we're attempting to connect or already 4101 // connected, whereas updateLinkProperties can be called at any time. 4102 switch (reason) { 4103 case DhcpStateMachine.DHCP_SUCCESS: 4104 case CMD_STATIC_IP_SUCCESS: 4105 // IPv4 provisioning succeded. Advance to connected state. 4106 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4107 if (!isProvisioned) { 4108 // Can never happen unless DHCP reports success but isProvisioned thinks the 4109 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4110 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4111 // TODO: disconnect here instead. If our configuration is not usable, there's no 4112 // point in staying connected, and if mLinkProperties is out of sync with 4113 // reality, that will cause problems in the future. 4114 loge("IPv4 config succeeded, but not provisioned"); 4115 } 4116 break; 4117 4118 case DhcpStateMachine.DHCP_FAILURE: 4119 // DHCP failed. If we're not already provisioned, give up and disconnect. 4120 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4121 if (!isProvisioned) { 4122 sendMessage(CMD_IP_CONFIGURATION_LOST); 4123 } else { 4124 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4125 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4126 4127 // To be sure we don't get stuck with a non-working network if all we had is 4128 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4129 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4130 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4131 // necessary for provisioning, its deletion will cause us to disconnect. 4132 // 4133 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4134 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4135 // not return true if we're using DHCP and don't have an IPv4 default route. So 4136 // for now it's only here for extra redundancy. However, it will increase 4137 // robustness if we move to getting IPv4 routes from netlink as well. 4138 loge("DHCP failure: provisioned, clearing IPv4 address."); 4139 if (!clearIPv4Address(mInterfaceName)) { 4140 sendMessage(CMD_IP_CONFIGURATION_LOST); 4141 } 4142 } 4143 break; 4144 4145 case CMD_STATIC_IP_FAILURE: 4146 // Static configuration was invalid, or an error occurred in applying it. Give up. 4147 sendMessage(CMD_IP_CONFIGURATION_LOST); 4148 break; 4149 4150 case CMD_UPDATE_LINKPROPERTIES: 4151 // IP addresses, DNS servers, etc. changed. Act accordingly. 4152 if (wasProvisioned && !isProvisioned) { 4153 // We no longer have a usable network configuration. Disconnect. 4154 sendMessage(CMD_IP_CONFIGURATION_LOST); 4155 } else if (!wasProvisioned && isProvisioned) { 4156 // We have a usable IPv6-only config. Advance to connected state. 4157 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4158 } 4159 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4160 // If anything has changed and we're already connected, send out a notification. 4161 sendLinkConfigurationChangedBroadcast(); 4162 } 4163 break; 4164 } 4165 } 4166 4167 /** 4168 * Clears all our link properties. 4169 */ 4170 private void clearLinkProperties() { 4171 // Clear the link properties obtained from DHCP and netlink. 4172 synchronized (mDhcpResultsLock) { 4173 if (mDhcpResults != null) { 4174 mDhcpResults.clear(); 4175 } 4176 } 4177 mNetlinkTracker.clearLinkProperties(); 4178 4179 // Now clear the merged link properties. 4180 mLinkProperties.clear(); 4181 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4182 } 4183 4184 /** 4185 * try to update default route MAC address. 4186 */ 4187 private String updateDefaultRouteMacAddress(int timeout) { 4188 String address = null; 4189 for (RouteInfo route : mLinkProperties.getRoutes()) { 4190 if (route.isDefaultRoute() && route.hasGateway()) { 4191 InetAddress gateway = route.getGateway(); 4192 if (gateway instanceof Inet4Address) { 4193 if (PDBG) { 4194 loge("updateDefaultRouteMacAddress found Ipv4 default :" 4195 + gateway.getHostAddress()); 4196 } 4197 address = macAddressFromRoute(gateway.getHostAddress()); 4198 /* The gateway's MAC address is known */ 4199 if ((address == null) && (timeout > 0)) { 4200 boolean reachable = false; 4201 try { 4202 reachable = gateway.isReachable(timeout); 4203 } catch (Exception e) { 4204 loge("updateDefaultRouteMacAddress exception reaching :" 4205 + gateway.getHostAddress()); 4206 4207 } finally { 4208 if (reachable == true) { 4209 4210 address = macAddressFromRoute(gateway.getHostAddress()); 4211 if (PDBG) { 4212 loge("updateDefaultRouteMacAddress reachable (tried again) :" 4213 + gateway.getHostAddress() + " found " + address); 4214 } 4215 } 4216 } 4217 } 4218 if (address != null) { 4219 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4220 } 4221 } 4222 } 4223 } 4224 return address; 4225 } 4226 4227 private void sendScanResultsAvailableBroadcast() { 4228 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4229 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4230 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4231 } 4232 4233 private void sendRssiChangeBroadcast(final int newRssi) { 4234 try { 4235 mBatteryStats.noteWifiRssiChanged(newRssi); 4236 } catch (RemoteException e) { 4237 // Won't happen. 4238 } 4239 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4240 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4241 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4242 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4243 } 4244 4245 private void sendNetworkStateChangeBroadcast(String bssid) { 4246 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4247 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4248 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4249 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties (mLinkProperties)); 4250 if (bssid != null) 4251 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4252 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4253 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4254 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, new WifiInfo(mWifiInfo)); 4255 } 4256 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4257 } 4258 4259 private void sendLinkConfigurationChangedBroadcast() { 4260 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4261 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4262 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4263 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4264 } 4265 4266 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4267 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4268 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4269 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4270 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4271 } 4272 4273 /** 4274 * Record the detailed state of a network. 4275 * @param state the new {@code DetailedState} 4276 */ 4277 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4278 boolean hidden = false; 4279 4280 if (linkDebouncing || isRoaming()) { 4281 // There is generally a confusion in the system about colluding 4282 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4283 // which leads to multiple confusion. 4284 // 4285 // If link is de-bouncing or roaming, we already have an IP address 4286 // as well we were connected and are doing L2 cycles of 4287 // reconnecting or renewing IP address to check that we still have it 4288 // This L2 link flapping should ne be reflected into the Network state 4289 // which is the state of the WiFi Network visible to Layer 3 and applications 4290 // Note that once debouncing and roaming are completed, we will 4291 // set the Network state to where it should be, or leave it as unchanged 4292 // 4293 hidden = true; 4294 } 4295 if (DBG) { 4296 log("setDetailed state, old =" 4297 + mNetworkInfo.getDetailedState() + " and new state=" + state 4298 + " hidden=" + hidden); 4299 } 4300 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4301 // Always indicate that SSID has changed 4302 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4303 if (DBG) { 4304 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4305 } 4306 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4307 sendNetworkStateChangeBroadcast(null); 4308 } 4309 } 4310 if (hidden == true) { 4311 return false; 4312 } 4313 4314 if (state != mNetworkInfo.getDetailedState()) { 4315 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4316 if (mNetworkAgent != null) { 4317 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4318 } 4319 sendNetworkStateChangeBroadcast(null); 4320 return true; 4321 } 4322 return false; 4323 } 4324 4325 private DetailedState getNetworkDetailedState() { 4326 return mNetworkInfo.getDetailedState(); 4327 } 4328 4329 4330 private SupplicantState handleSupplicantStateChange(Message message) { 4331 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4332 SupplicantState state = stateChangeResult.state; 4333 // Supplicant state change 4334 // [31-13] Reserved for future use 4335 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4336 // 50023 supplicant_state_changed (custom|1|5) 4337 mWifiInfo.setSupplicantState(state); 4338 // Network id is only valid when we start connecting 4339 if (SupplicantState.isConnecting(state)) { 4340 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4341 } else { 4342 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4343 } 4344 4345 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4346 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4347 4348 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4349 4350 return state; 4351 } 4352 4353 /** 4354 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4355 * using the interface, stopping DHCP & disabling interface 4356 */ 4357 private void handleNetworkDisconnect() { 4358 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4359 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4360 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 4361 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 4362 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 4363 4364 4365 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4366 4367 stopDhcp(); 4368 4369 try { 4370 mNwService.clearInterfaceAddresses(mInterfaceName); 4371 mNwService.disableIpv6(mInterfaceName); 4372 } catch (Exception e) { 4373 loge("Failed to clear addresses or disable ipv6" + e); 4374 } 4375 4376 /* Reset data structures */ 4377 mBadLinkspeedcount = 0; 4378 mWifiInfo.reset(); 4379 linkDebouncing = false; 4380 /* Reset roaming parameters */ 4381 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4382 4383 /** 4384 * fullBandConnectedTimeIntervalMilli: 4385 * - start scans at mWifiConfigStore.associatedPartialScanPeriodMilli seconds interval 4386 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4387 * Initialize to sane value = 20 seconds 4388 */ 4389 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4390 4391 setNetworkDetailedState(DetailedState.DISCONNECTED); 4392 if (mNetworkAgent != null) { 4393 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4394 mNetworkAgent = null; 4395 } 4396 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4397 4398 /* Clear network properties */ 4399 clearLinkProperties(); 4400 4401 /* Cend event to CM & network change broadcast */ 4402 sendNetworkStateChangeBroadcast(mLastBssid); 4403 4404 /* Cancel auto roam requests */ 4405 autoRoamSetBSSID(mLastNetworkId, "any"); 4406 4407 mLastBssid= null; 4408 registerDisconnected(); 4409 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4410 } 4411 4412 private void handleSupplicantConnectionLoss() { 4413 /* Socket connection can be lost when we do a graceful shutdown 4414 * or when the driver is hung. Ensure supplicant is stopped here. 4415 */ 4416 mWifiMonitor.killSupplicant(mP2pSupported); 4417 mWifiNative.closeSupplicantConnection(); 4418 sendSupplicantConnectionChangedBroadcast(false); 4419 setWifiState(WIFI_STATE_DISABLED); 4420 } 4421 4422 void handlePreDhcpSetup() { 4423 mDhcpActive = true; 4424 if (!mBluetoothConnectionActive) { 4425 /* 4426 * There are problems setting the Wi-Fi driver's power 4427 * mode to active when bluetooth coexistence mode is 4428 * enabled or sense. 4429 * <p> 4430 * We set Wi-Fi to active mode when 4431 * obtaining an IP address because we've found 4432 * compatibility issues with some routers with low power 4433 * mode. 4434 * <p> 4435 * In order for this active power mode to properly be set, 4436 * we disable coexistence mode until we're done with 4437 * obtaining an IP address. One exception is if we 4438 * are currently connected to a headset, since disabling 4439 * coexistence would interrupt that connection. 4440 */ 4441 // Disable the coexistence mode 4442 mWifiNative.setBluetoothCoexistenceMode( 4443 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4444 } 4445 4446 // Disable power save and suspend optimizations during DHCP 4447 // Note: The order here is important for now. Brcm driver changes 4448 // power settings when we control suspend mode optimizations. 4449 // TODO: Remove this comment when the driver is fixed. 4450 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4451 mWifiNative.setPowerSave(false); 4452 4453 // stopBatchedScan(); 4454 WifiNative.pauseScan(); 4455 4456 // Update link layer stats 4457 getWifiLinkLayerStats(false); 4458 4459 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4460 Message msg = new Message(); 4461 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4462 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4463 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4464 msg.obj = mDhcpStateMachine; 4465 mWifiP2pChannel.sendMessage(msg); 4466 } 4467 4468 4469 void startDhcp() { 4470 if (mDhcpStateMachine == null) { 4471 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4472 mContext, WifiStateMachine.this, mInterfaceName); 4473 4474 } 4475 mDhcpStateMachine.registerForPreDhcpNotification(); 4476 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4477 } 4478 4479 void renewDhcp() { 4480 if (mDhcpStateMachine == null) { 4481 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4482 mContext, WifiStateMachine.this, mInterfaceName); 4483 4484 } 4485 mDhcpStateMachine.registerForPreDhcpNotification(); 4486 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4487 } 4488 4489 void stopDhcp() { 4490 if (mDhcpStateMachine != null) { 4491 /* In case we were in middle of DHCP operation restore back powermode */ 4492 handlePostDhcpSetup(); 4493 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4494 } 4495 } 4496 4497 void handlePostDhcpSetup() { 4498 /* Restore power save and suspend optimizations */ 4499 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4500 mWifiNative.setPowerSave(true); 4501 4502 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 4503 4504 // Set the coexistence mode back to its default value 4505 mWifiNative.setBluetoothCoexistenceMode( 4506 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4507 4508 mDhcpActive = false; 4509 4510 // startBatchedScan(); 4511 WifiNative.restartScan(); 4512 } 4513 4514 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 4515 4516 if (PDBG) { 4517 loge("wifistatemachine handleIPv4Success <" + dhcpResults.toString() + ">"); 4518 loge("link address " + dhcpResults.ipAddress); 4519 } 4520 4521 synchronized (mDhcpResultsLock) { 4522 mDhcpResults = dhcpResults; 4523 } 4524 4525 Inet4Address addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 4526 if (isRoaming()) { 4527 if (addr instanceof Inet4Address) { 4528 int previousAddress = mWifiInfo.getIpAddress(); 4529 int newAddress = NetworkUtils.inetAddressToInt(addr); 4530 if (previousAddress != newAddress) { 4531 loge("handleIPv4Success, roaming and address changed" + 4532 mWifiInfo + " got: " + addr); 4533 } else { 4534 4535 } 4536 } else { 4537 loge("handleIPv4Success, roaming and didnt get an IPv4 address" + 4538 addr.toString()); 4539 } 4540 } 4541 mWifiInfo.setInetAddress(addr); 4542 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 4543 updateLinkProperties(reason); 4544 } 4545 4546 private void handleSuccessfulIpConfiguration() { 4547 mLastSignalLevel = -1; // Force update of signal strength 4548 WifiConfiguration c = getCurrentWifiConfiguration(); 4549 if (c != null) { 4550 // Reset IP failure tracking 4551 c.numConnectionFailures = 0; 4552 4553 // Tell the framework whether the newly connected network is trusted or untrusted. 4554 updateCapabilities(c); 4555 } 4556 if (c != null) { 4557 ScanResult result = getCurrentScanResult(); 4558 if (result == null) { 4559 loge("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 4560 c.configKey()); 4561 } else { 4562 // Clear the per BSSID failure count 4563 result.numIpConfigFailures = 0; 4564 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 4565 // any BSSID, even though it may already have a non zero ip failure count, 4566 // this will typically happen if the user walks away and come back to his arrea 4567 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 4568 // in supplicant for a couple of hours or a day 4569 mWifiNative.clearBlacklist(); 4570 } 4571 } 4572 } 4573 4574 private void handleIPv4Failure(int reason) { 4575 synchronized(mDhcpResultsLock) { 4576 if (mDhcpResults != null) { 4577 mDhcpResults.clear(); 4578 } 4579 } 4580 if (PDBG) { 4581 loge("wifistatemachine handleIPv4Failure"); 4582 } 4583 updateLinkProperties(reason); 4584 } 4585 4586 private void handleIpConfigurationLost() { 4587 mWifiInfo.setInetAddress(null); 4588 mWifiInfo.setMeteredHint(false); 4589 4590 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 4591 "DHCP FAILURE", mWifiInfo.getBSSID()); 4592 4593 /* DHCP times out after about 30 seconds, we do a 4594 * disconnect thru supplicant, we will let autojoin retry connecting to the network 4595 */ 4596 mWifiNative.disconnect(); 4597 } 4598 4599 private int convertFrequencyToChannelNumber(int frequency) { 4600 if (frequency >= 2412 && frequency <= 2484) { 4601 return (frequency -2412) / 5 + 1; 4602 } else if (frequency >= 5170 && frequency <=5825) { 4603 //DFS is included 4604 return (frequency -5170) / 5 + 34; 4605 } else { 4606 return 0; 4607 } 4608 } 4609 4610 private int chooseApChannel(int apBand) { 4611 int apChannel; 4612 int[] channel; 4613 4614 if (apBand == 0) { 4615 //for 2.4GHz, we only set the AP at channel 1,6,11 4616 apChannel = 5 * mRandom.nextInt(3) + 1; 4617 } else { 4618 //5G without DFS 4619 channel = mWifiNative.getChannelsForBand(2); 4620 if (channel != null && channel.length > 0) { 4621 apChannel = channel[mRandom.nextInt(channel.length)]; 4622 apChannel = convertFrequencyToChannelNumber(apChannel); 4623 } else { 4624 Log.e(TAG, "SoftAp do not get available channel list"); 4625 apChannel = 0; 4626 } 4627 } 4628 4629 if(DBG) { 4630 Log.d(TAG, "SoftAp set on channel " + apChannel); 4631 } 4632 4633 return apChannel; 4634 } 4635 4636 4637 /* Current design is to not set the config on a running hostapd but instead 4638 * stop and start tethering when user changes config on a running access point 4639 * 4640 * TODO: Add control channel setup through hostapd that allows changing config 4641 * on a running daemon 4642 */ 4643 private void startSoftApWithConfig(final WifiConfiguration configuration) { 4644 // set channel 4645 final WifiConfiguration config = new WifiConfiguration(configuration); 4646 4647 if (DBG) { 4648 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 4649 } 4650 //fix me -- set country code through HAL Here 4651 if (config.apChannel == 0) { 4652 config.apChannel = chooseApChannel(config.apBand); 4653 if (config.apChannel == 0) { 4654 //fail to get available channel 4655 sendMessage(CMD_START_AP_FAILURE); 4656 return; 4657 } 4658 } 4659 //turn off interface 4660 if (!mWifiNative.toggleInterface(0)) { 4661 sendMessage(CMD_START_AP_FAILURE); 4662 return; 4663 } 4664 // Start hostapd on a separate thread 4665 new Thread(new Runnable() { 4666 public void run() { 4667 try { 4668 mNwService.startAccessPoint(config, mInterfaceName); 4669 } catch (Exception e) { 4670 loge("Exception in softap start " + e); 4671 try { 4672 mNwService.stopAccessPoint(mInterfaceName); 4673 mNwService.startAccessPoint(config, mInterfaceName); 4674 } catch (Exception e1) { 4675 loge("Exception in softap re-start " + e1); 4676 sendMessage(CMD_START_AP_FAILURE); 4677 return; 4678 } 4679 } 4680 if (DBG) log("Soft AP start successful"); 4681 sendMessage(CMD_START_AP_SUCCESS); 4682 } 4683 }).start(); 4684 } 4685 4686 /* 4687 * Read a MAC address in /proc/arp/table, used by WifistateMachine 4688 * so as to record MAC address of default gateway. 4689 **/ 4690 private String macAddressFromRoute(String ipAddress) { 4691 String macAddress = null; 4692 BufferedReader reader = null; 4693 try { 4694 reader = new BufferedReader(new FileReader("/proc/net/arp")); 4695 4696 // Skip over the line bearing colum titles 4697 String line = reader.readLine(); 4698 4699 while ((line = reader.readLine()) != null) { 4700 String[] tokens = line.split("[ ]+"); 4701 if (tokens.length < 6) { 4702 continue; 4703 } 4704 4705 // ARP column format is 4706 // Address HWType HWAddress Flags Mask IFace 4707 String ip = tokens[0]; 4708 String mac = tokens[3]; 4709 4710 if (ipAddress.equals(ip)) { 4711 macAddress = mac; 4712 break; 4713 } 4714 } 4715 4716 if (macAddress == null) { 4717 loge("Did not find remoteAddress {" + ipAddress + "} in " + 4718 "/proc/net/arp"); 4719 } 4720 4721 } catch (FileNotFoundException e) { 4722 loge("Could not open /proc/net/arp to lookup mac address"); 4723 } catch (IOException e) { 4724 loge("Could not read /proc/net/arp to lookup mac address"); 4725 } finally { 4726 try { 4727 if (reader != null) { 4728 reader.close(); 4729 } 4730 } catch (IOException e) { 4731 // Do nothing 4732 } 4733 } 4734 return macAddress; 4735 4736 } 4737 4738 private class WifiNetworkFactory extends NetworkFactory { 4739 /** Number of outstanding NetworkRequests for untrusted networks. */ 4740 private int mUntrustedReqCount = 0; 4741 4742 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 4743 super(l, c, TAG, f); 4744 } 4745 4746 @Override 4747 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 4748 ++mConnectionRequests; 4749 if (!networkRequest.networkCapabilities.hasCapability( 4750 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 4751 if (++mUntrustedReqCount == 1) { 4752 mWifiAutoJoinController.setAllowUntrustedConnections(true); 4753 } 4754 } 4755 } 4756 4757 @Override 4758 protected void releaseNetworkFor(NetworkRequest networkRequest) { 4759 --mConnectionRequests; 4760 if (!networkRequest.networkCapabilities.hasCapability( 4761 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 4762 if (--mUntrustedReqCount == 0) { 4763 mWifiAutoJoinController.setAllowUntrustedConnections(false); 4764 } 4765 } 4766 } 4767 4768 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 4769 pw.println("mConnectionRequests " + mConnectionRequests); 4770 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 4771 } 4772 4773 } 4774 4775 void maybeRegisterNetworkFactory() { 4776 if (mNetworkFactory == null) { 4777 checkAndSetConnectivityInstance(); 4778 if (mCm != null) { 4779 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 4780 NETWORKTYPE, mNetworkCapabilitiesFilter); 4781 mNetworkFactory.setScoreFilter(60); 4782 mNetworkFactory.register(); 4783 } 4784 } 4785 } 4786 4787 /******************************************************** 4788 * HSM states 4789 *******************************************************/ 4790 4791 class DefaultState extends State { 4792 @Override 4793 public boolean processMessage(Message message) { 4794 logStateAndMessage(message, getClass().getSimpleName()); 4795 4796 switch (message.what) { 4797 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 4798 AsyncChannel ac = (AsyncChannel) message.obj; 4799 if (ac == mWifiP2pChannel) { 4800 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 4801 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 4802 } else { 4803 loge("WifiP2pService connection failure, error=" + message.arg1); 4804 } 4805 } else { 4806 loge("got HALF_CONNECTED for unknown channel"); 4807 } 4808 break; 4809 } 4810 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 4811 AsyncChannel ac = (AsyncChannel) message.obj; 4812 if (ac == mWifiP2pChannel) { 4813 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 4814 //TODO: Re-establish connection to state machine after a delay 4815 // mWifiP2pChannel.connect(mContext, getHandler(), 4816 // mWifiP2pManager.getMessenger()); 4817 } 4818 break; 4819 } 4820 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 4821 mBluetoothConnectionActive = (message.arg1 != 4822 BluetoothAdapter.STATE_DISCONNECTED); 4823 break; 4824 /* Synchronous call returns */ 4825 case CMD_PING_SUPPLICANT: 4826 case CMD_ENABLE_NETWORK: 4827 case CMD_ADD_OR_UPDATE_NETWORK: 4828 case CMD_REMOVE_NETWORK: 4829 case CMD_SAVE_CONFIG: 4830 replyToMessage(message, message.what, FAILURE); 4831 break; 4832 case CMD_GET_CAPABILITY_FREQ: 4833 replyToMessage(message, message.what, null); 4834 break; 4835 case CMD_GET_CONFIGURED_NETWORKS: 4836 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4837 break; 4838 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 4839 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4840 break; 4841 case CMD_ENABLE_RSSI_POLL: 4842 mEnableRssiPolling = (message.arg1 == 1); 4843 break; 4844 case CMD_SET_HIGH_PERF_MODE: 4845 if (message.arg1 == 1) { 4846 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 4847 } else { 4848 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 4849 } 4850 break; 4851 case CMD_BOOT_COMPLETED: 4852 maybeRegisterNetworkFactory(); 4853 break; 4854 case CMD_SET_BATCHED_SCAN: 4855 recordBatchedScanSettings(message.arg1, message.arg2, (Bundle)message.obj); 4856 break; 4857 case CMD_POLL_BATCHED_SCAN: 4858 handleBatchedScanPollRequest(); 4859 break; 4860 case CMD_START_NEXT_BATCHED_SCAN: 4861 startNextBatchedScan(); 4862 break; 4863 case CMD_SCREEN_STATE_CHANGED: 4864 handleScreenStateChanged(message.arg1 != 0, 4865 /* startBackgroundScanIfNeeded = */ false); 4866 break; 4867 /* Discard */ 4868 case CMD_START_SCAN: 4869 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4870 break; 4871 case CMD_START_SUPPLICANT: 4872 case CMD_STOP_SUPPLICANT: 4873 case CMD_STOP_SUPPLICANT_FAILED: 4874 case CMD_START_DRIVER: 4875 case CMD_STOP_DRIVER: 4876 case CMD_DELAYED_STOP_DRIVER: 4877 case CMD_DRIVER_START_TIMED_OUT: 4878 case CMD_START_AP: 4879 case CMD_START_AP_SUCCESS: 4880 case CMD_START_AP_FAILURE: 4881 case CMD_STOP_AP: 4882 case CMD_TETHER_STATE_CHANGE: 4883 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 4884 case CMD_DISCONNECT: 4885 case CMD_RECONNECT: 4886 case CMD_REASSOCIATE: 4887 case CMD_RELOAD_TLS_AND_RECONNECT: 4888 case WifiMonitor.SUP_CONNECTION_EVENT: 4889 case WifiMonitor.SUP_DISCONNECTION_EVENT: 4890 case WifiMonitor.NETWORK_CONNECTION_EVENT: 4891 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 4892 case WifiMonitor.SCAN_RESULTS_EVENT: 4893 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 4894 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 4895 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 4896 case WifiMonitor.WPS_OVERLAP_EVENT: 4897 case CMD_BLACKLIST_NETWORK: 4898 case CMD_CLEAR_BLACKLIST: 4899 case CMD_SET_OPERATIONAL_MODE: 4900 case CMD_SET_COUNTRY_CODE: 4901 case CMD_SET_FREQUENCY_BAND: 4902 case CMD_RSSI_POLL: 4903 case CMD_ENABLE_ALL_NETWORKS: 4904 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 4905 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 4906 /* Handled by WifiApConfigStore */ 4907 case CMD_SET_AP_CONFIG: 4908 case CMD_SET_AP_CONFIG_COMPLETED: 4909 case CMD_REQUEST_AP_CONFIG: 4910 case CMD_RESPONSE_AP_CONFIG: 4911 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 4912 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 4913 case CMD_NO_NETWORKS_PERIODIC_SCAN: 4914 case CMD_DISABLE_P2P_RSP: 4915 case WifiMonitor.SUP_REQUEST_IDENTITY: 4916 case CMD_TEST_NETWORK_DISCONNECT: 4917 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 4918 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 4919 case CMD_TARGET_BSSID: 4920 case CMD_AUTO_CONNECT: 4921 case CMD_AUTO_ROAM: 4922 case CMD_AUTO_SAVE_NETWORK: 4923 case CMD_ASSOCIATED_BSSID: 4924 case CMD_UNWANTED_NETWORK: 4925 case CMD_DISCONNECTING_WATCHDOG_TIMER: 4926 case CMD_ROAM_WATCHDOG_TIMER: 4927 case CMD_DISABLE_EPHEMERAL_NETWORK: 4928 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4929 break; 4930 case DhcpStateMachine.CMD_ON_QUIT: 4931 mDhcpStateMachine = null; 4932 break; 4933 case CMD_SET_SUSPEND_OPT_ENABLED: 4934 if (message.arg1 == 1) { 4935 mSuspendWakeLock.release(); 4936 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 4937 } else { 4938 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 4939 } 4940 break; 4941 case WifiMonitor.DRIVER_HUNG_EVENT: 4942 setSupplicantRunning(false); 4943 setSupplicantRunning(true); 4944 break; 4945 case WifiManager.CONNECT_NETWORK: 4946 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 4947 WifiManager.BUSY); 4948 break; 4949 case WifiManager.FORGET_NETWORK: 4950 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 4951 WifiManager.BUSY); 4952 break; 4953 case WifiManager.SAVE_NETWORK: 4954 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 4955 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 4956 WifiManager.BUSY); 4957 break; 4958 case WifiManager.START_WPS: 4959 replyToMessage(message, WifiManager.WPS_FAILED, 4960 WifiManager.BUSY); 4961 break; 4962 case WifiManager.CANCEL_WPS: 4963 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 4964 WifiManager.BUSY); 4965 break; 4966 case WifiManager.DISABLE_NETWORK: 4967 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 4968 WifiManager.BUSY); 4969 break; 4970 case WifiManager.RSSI_PKTCNT_FETCH: 4971 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 4972 WifiManager.BUSY); 4973 break; 4974 case CMD_GET_SUPPORTED_FEATURES: 4975 if (WifiNative.startHal()) { 4976 int featureSet = WifiNative.getSupportedFeatureSet(); 4977 replyToMessage(message, message.what, featureSet); 4978 } else { 4979 replyToMessage(message, message.what, 0); 4980 } 4981 break; 4982 case CMD_GET_LINK_LAYER_STATS: 4983 // Not supported hence reply with error message 4984 replyToMessage(message, message.what, null); 4985 break; 4986 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 4987 NetworkInfo info = (NetworkInfo) message.obj; 4988 mP2pConnected.set(info.isConnected()); 4989 break; 4990 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 4991 mTemporarilyDisconnectWifi = (message.arg1 == 1); 4992 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 4993 break; 4994 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 4995 case CMD_UPDATE_LINKPROPERTIES: 4996 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 4997 break; 4998 case CMD_IP_CONFIGURATION_SUCCESSFUL: 4999 case CMD_IP_CONFIGURATION_LOST: 5000 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5001 break; 5002 case CMD_GET_CONNECTION_STATISTICS: 5003 replyToMessage(message, message.what, mWifiConnectionStatistics); 5004 break; 5005 default: 5006 loge("Error! unhandled message" + message); 5007 break; 5008 } 5009 return HANDLED; 5010 } 5011 } 5012 5013 class InitialState extends State { 5014 @Override 5015 public void enter() { 5016 mWifiNative.unloadDriver(); 5017 5018 if (mWifiP2pChannel == null) { 5019 mWifiP2pChannel = new AsyncChannel(); 5020 mWifiP2pChannel.connect(mContext, getHandler(), 5021 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5022 } 5023 5024 if (mWifiApConfigChannel == null) { 5025 mWifiApConfigChannel = new AsyncChannel(); 5026 WifiApConfigStore wifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 5027 mContext, getHandler()); 5028 wifiApConfigStore.loadApConfiguration(); 5029 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5030 wifiApConfigStore.getMessenger()); 5031 } 5032 } 5033 @Override 5034 public boolean processMessage(Message message) { 5035 logStateAndMessage(message, getClass().getSimpleName()); 5036 switch (message.what) { 5037 case CMD_START_SUPPLICANT: 5038 if (mWifiNative.loadDriver()) { 5039 try { 5040 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5041 } catch (Exception e) { 5042 loge("Failed to reload STA firmware " + e); 5043 // Continue 5044 } 5045 5046 try { 5047 // A runtime crash can leave the interface up and 5048 // IP addresses configured, and this affects 5049 // connectivity when supplicant starts up. 5050 // Ensure interface is down and we have no IP 5051 // addresses before a supplicant start. 5052 mNwService.setInterfaceDown(mInterfaceName); 5053 mNwService.clearInterfaceAddresses(mInterfaceName); 5054 5055 // Set privacy extensions 5056 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5057 5058 // IPv6 is enabled only as long as access point is connected since: 5059 // - IPv6 addresses and routes stick around after disconnection 5060 // - kernel is unaware when connected and fails to start IPv6 negotiation 5061 // - kernel can start autoconfiguration when 802.1x is not complete 5062 mNwService.disableIpv6(mInterfaceName); 5063 } catch (RemoteException re) { 5064 loge("Unable to change interface settings: " + re); 5065 } catch (IllegalStateException ie) { 5066 loge("Unable to change interface settings: " + ie); 5067 } 5068 5069 /* Stop a running supplicant after a runtime restart 5070 * Avoids issues with drivers that do not handle interface down 5071 * on a running supplicant properly. 5072 */ 5073 mWifiMonitor.killSupplicant(mP2pSupported); 5074 if(mWifiNative.startSupplicant(mP2pSupported)) { 5075 setWifiState(WIFI_STATE_ENABLING); 5076 if (DBG) log("Supplicant start successful"); 5077 mWifiMonitor.startMonitoring(); 5078 transitionTo(mSupplicantStartingState); 5079 } else { 5080 loge("Failed to start supplicant!"); 5081 } 5082 } else { 5083 loge("Failed to load driver"); 5084 } 5085 break; 5086 case CMD_START_AP: 5087 if (mWifiNative.loadDriver()) { 5088 setWifiApState(WIFI_AP_STATE_ENABLING); 5089 transitionTo(mSoftApStartingState); 5090 } else { 5091 loge("Failed to load driver for softap"); 5092 } 5093 break; 5094 default: 5095 return NOT_HANDLED; 5096 } 5097 return HANDLED; 5098 } 5099 } 5100 5101 class SupplicantStartingState extends State { 5102 private void initializeWpsDetails() { 5103 String detail; 5104 detail = SystemProperties.get("ro.product.name", ""); 5105 if (!mWifiNative.setDeviceName(detail)) { 5106 loge("Failed to set device name " + detail); 5107 } 5108 detail = SystemProperties.get("ro.product.manufacturer", ""); 5109 if (!mWifiNative.setManufacturer(detail)) { 5110 loge("Failed to set manufacturer " + detail); 5111 } 5112 detail = SystemProperties.get("ro.product.model", ""); 5113 if (!mWifiNative.setModelName(detail)) { 5114 loge("Failed to set model name " + detail); 5115 } 5116 detail = SystemProperties.get("ro.product.model", ""); 5117 if (!mWifiNative.setModelNumber(detail)) { 5118 loge("Failed to set model number " + detail); 5119 } 5120 detail = SystemProperties.get("ro.serialno", ""); 5121 if (!mWifiNative.setSerialNumber(detail)) { 5122 loge("Failed to set serial number " + detail); 5123 } 5124 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5125 loge("Failed to set WPS config methods"); 5126 } 5127 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5128 loge("Failed to set primary device type " + mPrimaryDeviceType); 5129 } 5130 } 5131 5132 @Override 5133 public boolean processMessage(Message message) { 5134 logStateAndMessage(message, getClass().getSimpleName()); 5135 5136 switch(message.what) { 5137 case WifiMonitor.SUP_CONNECTION_EVENT: 5138 if (DBG) log("Supplicant connection established"); 5139 setWifiState(WIFI_STATE_ENABLED); 5140 mSupplicantRestartCount = 0; 5141 /* Reset the supplicant state to indicate the supplicant 5142 * state is not known at this time */ 5143 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5144 /* Initialize data structures */ 5145 mLastBssid = null; 5146 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5147 mLastSignalLevel = -1; 5148 5149 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5150 mWifiNative.enableSaveConfig(); 5151 mWifiConfigStore.loadAndEnableAllNetworks(); 5152 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5153 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5154 } 5155 if (mWifiConfigStore.associatedPartialScanPeriodMilli.get() < 0) { 5156 mWifiConfigStore.associatedPartialScanPeriodMilli.set(0); 5157 } 5158 initializeWpsDetails(); 5159 5160 sendSupplicantConnectionChangedBroadcast(true); 5161 transitionTo(mDriverStartedState); 5162 break; 5163 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5164 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5165 loge("Failed to setup control channel, restart supplicant"); 5166 mWifiMonitor.killSupplicant(mP2pSupported); 5167 transitionTo(mInitialState); 5168 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5169 } else { 5170 loge("Failed " + mSupplicantRestartCount + 5171 " times to start supplicant, unload driver"); 5172 mSupplicantRestartCount = 0; 5173 setWifiState(WIFI_STATE_UNKNOWN); 5174 transitionTo(mInitialState); 5175 } 5176 break; 5177 case CMD_START_SUPPLICANT: 5178 case CMD_STOP_SUPPLICANT: 5179 case CMD_START_AP: 5180 case CMD_STOP_AP: 5181 case CMD_START_DRIVER: 5182 case CMD_STOP_DRIVER: 5183 case CMD_SET_OPERATIONAL_MODE: 5184 case CMD_SET_COUNTRY_CODE: 5185 case CMD_SET_FREQUENCY_BAND: 5186 case CMD_START_PACKET_FILTERING: 5187 case CMD_STOP_PACKET_FILTERING: 5188 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5189 deferMessage(message); 5190 break; 5191 default: 5192 return NOT_HANDLED; 5193 } 5194 return HANDLED; 5195 } 5196 } 5197 5198 class SupplicantStartedState extends State { 5199 @Override 5200 public void enter() { 5201 /* Wifi is available as long as we have a connection to supplicant */ 5202 mNetworkInfo.setIsAvailable(true); 5203 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5204 5205 int defaultInterval = mContext.getResources().getInteger( 5206 R.integer.config_wifi_supplicant_scan_interval); 5207 5208 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5209 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5210 defaultInterval); 5211 5212 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5213 mWifiNative.setExternalSim(true); 5214 5215 /* turn on use of DFS channels */ 5216 WifiNative.setDfsFlag(true); 5217 5218 /* set country code */ 5219 setCountryCode(); 5220 5221 setRandomMacOui(); 5222 mWifiNative.enableAutoConnect(false); 5223 } 5224 5225 @Override 5226 public boolean processMessage(Message message) { 5227 logStateAndMessage(message, getClass().getSimpleName()); 5228 5229 switch(message.what) { 5230 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5231 if (mP2pSupported) { 5232 transitionTo(mWaitForP2pDisableState); 5233 } else { 5234 transitionTo(mSupplicantStoppingState); 5235 } 5236 break; 5237 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5238 loge("Connection lost, restart supplicant"); 5239 handleSupplicantConnectionLoss(); 5240 handleNetworkDisconnect(); 5241 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5242 if (mP2pSupported) { 5243 transitionTo(mWaitForP2pDisableState); 5244 } else { 5245 transitionTo(mInitialState); 5246 } 5247 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5248 break; 5249 case WifiMonitor.SCAN_RESULTS_EVENT: 5250 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5251 closeRadioScanStats(); 5252 noteScanEnd(); 5253 setScanResults(); 5254 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5255 /* Just updated results from full scan, let apps know about this */ 5256 sendScanResultsAvailableBroadcast(); 5257 } 5258 mSendScanResultsBroadcast = false; 5259 mIsScanOngoing = false; 5260 mIsFullScanOngoing = false; 5261 if (mBufferedScanMsg.size() > 0) 5262 sendMessage(mBufferedScanMsg.remove()); 5263 break; 5264 case CMD_PING_SUPPLICANT: 5265 boolean ok = mWifiNative.ping(); 5266 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5267 break; 5268 case CMD_GET_CAPABILITY_FREQ: 5269 String freqs = mWifiNative.getFreqCapability(); 5270 replyToMessage(message, message.what, freqs); 5271 break; 5272 case CMD_START_AP: 5273 /* Cannot start soft AP while in client mode */ 5274 loge("Failed to start soft AP with a running supplicant"); 5275 setWifiApState(WIFI_AP_STATE_FAILED); 5276 break; 5277 case CMD_SET_OPERATIONAL_MODE: 5278 mOperationalMode = message.arg1; 5279 mWifiConfigStore. 5280 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5281 break; 5282 case CMD_TARGET_BSSID: 5283 // Trying to associate to this BSSID 5284 if (message.obj != null) { 5285 mTargetRoamBSSID = (String) message.obj; 5286 } 5287 break; 5288 case CMD_GET_LINK_LAYER_STATS: 5289 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5290 if (stats == null) { 5291 // When firmware doesnt support link layer stats, return an empty object 5292 stats = new WifiLinkLayerStats(); 5293 } 5294 replyToMessage(message, message.what, stats); 5295 break; 5296 case CMD_SET_COUNTRY_CODE: 5297 String country = (String) message.obj; 5298 5299 final boolean persist = (message.arg2 == 1); 5300 final int sequence = message.arg1; 5301 5302 if (sequence != mCountryCodeSequence.get()) { 5303 if (DBG) log("set country code ignored due to sequnce num"); 5304 break; 5305 } 5306 if (DBG) log("set country code " + country); 5307 country = country.toUpperCase(Locale.ROOT); 5308 5309 if (mDriverSetCountryCode == null || !mDriverSetCountryCode.equals(country)) { 5310 if (mWifiNative.setCountryCode(country)) { 5311 mDriverSetCountryCode = country; 5312 } else { 5313 loge("Failed to set country code " + country); 5314 } 5315 } 5316 5317 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5318 break; 5319 default: 5320 return NOT_HANDLED; 5321 } 5322 return HANDLED; 5323 } 5324 5325 @Override 5326 public void exit() { 5327 mNetworkInfo.setIsAvailable(false); 5328 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5329 } 5330 } 5331 5332 class SupplicantStoppingState extends State { 5333 @Override 5334 public void enter() { 5335 /* Send any reset commands to supplicant before shutting it down */ 5336 handleNetworkDisconnect(); 5337 if (mDhcpStateMachine != null) { 5338 mDhcpStateMachine.doQuit(); 5339 } 5340 5341 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5342 if (suppState == null) suppState = "unknown"; 5343 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5344 if (p2pSuppState == null) p2pSuppState = "unknown"; 5345 5346 loge("SupplicantStoppingState: stopSupplicant " 5347 + " init.svc.wpa_supplicant=" + suppState 5348 + " init.svc.p2p_supplicant=" + p2pSuppState); 5349 mWifiMonitor.stopSupplicant(); 5350 5351 /* Send ourselves a delayed message to indicate failure after a wait time */ 5352 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5353 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5354 setWifiState(WIFI_STATE_DISABLING); 5355 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5356 } 5357 @Override 5358 public boolean processMessage(Message message) { 5359 logStateAndMessage(message, getClass().getSimpleName()); 5360 5361 switch(message.what) { 5362 case WifiMonitor.SUP_CONNECTION_EVENT: 5363 loge("Supplicant connection received while stopping"); 5364 break; 5365 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5366 if (DBG) log("Supplicant connection lost"); 5367 handleSupplicantConnectionLoss(); 5368 transitionTo(mInitialState); 5369 break; 5370 case CMD_STOP_SUPPLICANT_FAILED: 5371 if (message.arg1 == mSupplicantStopFailureToken) { 5372 loge("Timed out on a supplicant stop, kill and proceed"); 5373 handleSupplicantConnectionLoss(); 5374 transitionTo(mInitialState); 5375 } 5376 break; 5377 case CMD_START_SUPPLICANT: 5378 case CMD_STOP_SUPPLICANT: 5379 case CMD_START_AP: 5380 case CMD_STOP_AP: 5381 case CMD_START_DRIVER: 5382 case CMD_STOP_DRIVER: 5383 case CMD_SET_OPERATIONAL_MODE: 5384 case CMD_SET_COUNTRY_CODE: 5385 case CMD_SET_FREQUENCY_BAND: 5386 case CMD_START_PACKET_FILTERING: 5387 case CMD_STOP_PACKET_FILTERING: 5388 deferMessage(message); 5389 break; 5390 default: 5391 return NOT_HANDLED; 5392 } 5393 return HANDLED; 5394 } 5395 } 5396 5397 class DriverStartingState extends State { 5398 private int mTries; 5399 @Override 5400 public void enter() { 5401 mTries = 1; 5402 /* Send ourselves a delayed message to start driver a second time */ 5403 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5404 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5405 } 5406 @Override 5407 public boolean processMessage(Message message) { 5408 logStateAndMessage(message, getClass().getSimpleName()); 5409 5410 switch(message.what) { 5411 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5412 SupplicantState state = handleSupplicantStateChange(message); 5413 /* If suplicant is exiting out of INTERFACE_DISABLED state into 5414 * a state that indicates driver has started, it is ready to 5415 * receive driver commands 5416 */ 5417 if (SupplicantState.isDriverActive(state)) { 5418 transitionTo(mDriverStartedState); 5419 } 5420 break; 5421 case CMD_DRIVER_START_TIMED_OUT: 5422 if (message.arg1 == mDriverStartToken) { 5423 if (mTries >= 2) { 5424 loge("Failed to start driver after " + mTries); 5425 transitionTo(mDriverStoppedState); 5426 } else { 5427 loge("Driver start failed, retrying"); 5428 mWakeLock.acquire(); 5429 mWifiNative.startDriver(); 5430 mWakeLock.release(); 5431 5432 ++mTries; 5433 /* Send ourselves a delayed message to start driver again */ 5434 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5435 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5436 } 5437 } 5438 break; 5439 /* Queue driver commands & connection events */ 5440 case CMD_START_DRIVER: 5441 case CMD_STOP_DRIVER: 5442 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5443 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5444 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5445 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5446 case WifiMonitor.WPS_OVERLAP_EVENT: 5447 case CMD_SET_COUNTRY_CODE: 5448 case CMD_SET_FREQUENCY_BAND: 5449 case CMD_START_PACKET_FILTERING: 5450 case CMD_STOP_PACKET_FILTERING: 5451 case CMD_START_SCAN: 5452 case CMD_DISCONNECT: 5453 case CMD_REASSOCIATE: 5454 case CMD_RECONNECT: 5455 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5456 deferMessage(message); 5457 break; 5458 case WifiMonitor.SCAN_RESULTS_EVENT: 5459 // Loose scan results obtained in Driver Starting state, they can only confuse 5460 // the state machine 5461 break; 5462 default: 5463 return NOT_HANDLED; 5464 } 5465 return HANDLED; 5466 } 5467 } 5468 5469 class DriverStartedState extends State { 5470 @Override 5471 public void enter() { 5472 5473 if (PDBG) { 5474 loge("DriverStartedState enter"); 5475 } 5476 mIsRunning = true; 5477 mInDelayedStop = false; 5478 mDelayedStopCounter++; 5479 updateBatteryWorkSource(null); 5480 /** 5481 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 5482 * When this mode is on, some of the low-level scan parameters used by the 5483 * driver are changed to reduce interference with bluetooth 5484 */ 5485 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5486 /* set frequency band of operation */ 5487 setFrequencyBand(); 5488 /* initialize network state */ 5489 setNetworkDetailedState(DetailedState.DISCONNECTED); 5490 5491 /* Remove any filtering on Multicast v6 at start */ 5492 mWifiNative.stopFilteringMulticastV6Packets(); 5493 5494 /* Reset Multicast v4 filtering state */ 5495 if (mFilteringMulticastV4Packets.get()) { 5496 mWifiNative.startFilteringMulticastV4Packets(); 5497 } else { 5498 mWifiNative.stopFilteringMulticastV4Packets(); 5499 } 5500 5501 mDhcpActive = false; 5502 5503 startBatchedScan(); 5504 5505 if (mOperationalMode != CONNECT_MODE) { 5506 mWifiNative.disconnect(); 5507 mWifiConfigStore.disableAllNetworks(); 5508 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5509 setWifiState(WIFI_STATE_DISABLED); 5510 } 5511 transitionTo(mScanModeState); 5512 } else { 5513 5514 // Status pulls in the current supplicant state and network connection state 5515 // events over the monitor connection. This helps framework sync up with 5516 // current supplicant state 5517 // TODO: actually check th supplicant status string and make sure the supplicant 5518 // is in disconnecte4d state. 5519 mWifiNative.status(); 5520 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 5521 transitionTo(mDisconnectedState); 5522 } 5523 5524 // We may have missed screen update at boot 5525 if (mScreenBroadcastReceived.get() == false) { 5526 PowerManager powerManager = (PowerManager)mContext.getSystemService( 5527 Context.POWER_SERVICE); 5528 handleScreenStateChanged(powerManager.isScreenOn(), 5529 /* startBackgroundScanIfNeeded = */ false); 5530 } else { 5531 // Set the right suspend mode settings 5532 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 5533 && mUserWantsSuspendOpt.get()); 5534 } 5535 mWifiNative.setPowerSave(true); 5536 5537 if (mP2pSupported) { 5538 if (mOperationalMode == CONNECT_MODE) { 5539 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 5540 } else { 5541 // P2P statemachine starts in disabled state, and is not enabled until 5542 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 5543 // keep it disabled. 5544 } 5545 } 5546 5547 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5548 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5549 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 5550 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5551 5552 if (PDBG) { 5553 loge("Driverstarted State enter done"); 5554 } 5555 } 5556 5557 @Override 5558 public boolean processMessage(Message message) { 5559 logStateAndMessage(message, getClass().getSimpleName()); 5560 5561 switch(message.what) { 5562 case CMD_START_SCAN: 5563 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5564 break; 5565 case CMD_SET_BATCHED_SCAN: 5566 if (recordBatchedScanSettings(message.arg1, message.arg2, 5567 (Bundle) message.obj)) { 5568 if (mBatchedScanSettings != null) { 5569 startBatchedScan(); 5570 } else { 5571 stopBatchedScan(); 5572 } 5573 } 5574 break; 5575 case CMD_SET_FREQUENCY_BAND: 5576 int band = message.arg1; 5577 if (DBG) log("set frequency band " + band); 5578 if (mWifiNative.setBand(band)) { 5579 5580 if (PDBG) loge("did set frequency band " + band); 5581 5582 mFrequencyBand.set(band); 5583 // Flush old data - like scan results 5584 mWifiNative.bssFlush(); 5585 // Fetch the latest scan results when frequency band is set 5586 startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 5587 5588 if (PDBG) loge("done set frequency band " + band); 5589 5590 } else { 5591 loge("Failed to set frequency band " + band); 5592 } 5593 break; 5594 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5595 mBluetoothConnectionActive = (message.arg1 != 5596 BluetoothAdapter.STATE_DISCONNECTED); 5597 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5598 break; 5599 case CMD_STOP_DRIVER: 5600 int mode = message.arg1; 5601 5602 /* Already doing a delayed stop */ 5603 if (mInDelayedStop) { 5604 if (DBG) log("Already in delayed stop"); 5605 break; 5606 } 5607 /* disconnect right now, but leave the driver running for a bit */ 5608 mWifiConfigStore.disableAllNetworks(); 5609 5610 mInDelayedStop = true; 5611 mDelayedStopCounter++; 5612 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 5613 5614 /* send regular delayed shut down */ 5615 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 5616 driverStopIntent.setPackage(this.getClass().getPackage().getName()); 5617 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 5618 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 5619 DRIVER_STOP_REQUEST, driverStopIntent, 5620 PendingIntent.FLAG_UPDATE_CURRENT); 5621 5622 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 5623 + mDriverStopDelayMs, mDriverStopIntent); 5624 break; 5625 case CMD_START_DRIVER: 5626 if (mInDelayedStop) { 5627 mInDelayedStop = false; 5628 mDelayedStopCounter++; 5629 mAlarmManager.cancel(mDriverStopIntent); 5630 if (DBG) log("Delayed stop ignored due to start"); 5631 if (mOperationalMode == CONNECT_MODE) { 5632 mWifiConfigStore.enableAllNetworks(); 5633 } 5634 } 5635 break; 5636 case CMD_DELAYED_STOP_DRIVER: 5637 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 5638 if (message.arg1 != mDelayedStopCounter) break; 5639 if (getCurrentState() != mDisconnectedState) { 5640 mWifiNative.disconnect(); 5641 handleNetworkDisconnect(); 5642 } 5643 mWakeLock.acquire(); 5644 mWifiNative.stopDriver(); 5645 mWakeLock.release(); 5646 if (mP2pSupported) { 5647 transitionTo(mWaitForP2pDisableState); 5648 } else { 5649 transitionTo(mDriverStoppingState); 5650 } 5651 break; 5652 case CMD_START_PACKET_FILTERING: 5653 if (message.arg1 == MULTICAST_V6) { 5654 mWifiNative.startFilteringMulticastV6Packets(); 5655 } else if (message.arg1 == MULTICAST_V4) { 5656 mWifiNative.startFilteringMulticastV4Packets(); 5657 } else { 5658 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 5659 } 5660 break; 5661 case CMD_STOP_PACKET_FILTERING: 5662 if (message.arg1 == MULTICAST_V6) { 5663 mWifiNative.stopFilteringMulticastV6Packets(); 5664 } else if (message.arg1 == MULTICAST_V4) { 5665 mWifiNative.stopFilteringMulticastV4Packets(); 5666 } else { 5667 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 5668 } 5669 break; 5670 case CMD_SET_SUSPEND_OPT_ENABLED: 5671 if (message.arg1 == 1) { 5672 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 5673 mSuspendWakeLock.release(); 5674 } else { 5675 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 5676 } 5677 break; 5678 case CMD_SET_HIGH_PERF_MODE: 5679 if (message.arg1 == 1) { 5680 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 5681 } else { 5682 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 5683 } 5684 break; 5685 case CMD_ENABLE_TDLS: 5686 if (message.obj != null) { 5687 String remoteAddress = (String) message.obj; 5688 boolean enable = (message.arg1 == 1); 5689 mWifiNative.startTdls(remoteAddress, enable); 5690 } 5691 break; 5692 default: 5693 return NOT_HANDLED; 5694 } 5695 return HANDLED; 5696 } 5697 @Override 5698 public void exit() { 5699 mIsRunning = false; 5700 updateBatteryWorkSource(null); 5701 mScanResults = new ArrayList<>(); 5702 5703 stopBatchedScan(); 5704 5705 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5706 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5707 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 5708 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5709 noteScanEnd(); // wrap up any pending request. 5710 mBufferedScanMsg.clear(); 5711 } 5712 } 5713 5714 class WaitForP2pDisableState extends State { 5715 private State mTransitionToState; 5716 @Override 5717 public void enter() { 5718 switch (getCurrentMessage().what) { 5719 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5720 mTransitionToState = mInitialState; 5721 break; 5722 case CMD_DELAYED_STOP_DRIVER: 5723 mTransitionToState = mDriverStoppingState; 5724 break; 5725 case CMD_STOP_SUPPLICANT: 5726 mTransitionToState = mSupplicantStoppingState; 5727 break; 5728 default: 5729 mTransitionToState = mDriverStoppingState; 5730 break; 5731 } 5732 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 5733 } 5734 @Override 5735 public boolean processMessage(Message message) { 5736 logStateAndMessage(message, getClass().getSimpleName()); 5737 5738 switch(message.what) { 5739 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 5740 transitionTo(mTransitionToState); 5741 break; 5742 /* Defer wifi start/shut and driver commands */ 5743 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5744 case CMD_START_SUPPLICANT: 5745 case CMD_STOP_SUPPLICANT: 5746 case CMD_START_AP: 5747 case CMD_STOP_AP: 5748 case CMD_START_DRIVER: 5749 case CMD_STOP_DRIVER: 5750 case CMD_SET_OPERATIONAL_MODE: 5751 case CMD_SET_COUNTRY_CODE: 5752 case CMD_SET_FREQUENCY_BAND: 5753 case CMD_START_PACKET_FILTERING: 5754 case CMD_STOP_PACKET_FILTERING: 5755 case CMD_START_SCAN: 5756 case CMD_DISCONNECT: 5757 case CMD_REASSOCIATE: 5758 case CMD_RECONNECT: 5759 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5760 deferMessage(message); 5761 break; 5762 default: 5763 return NOT_HANDLED; 5764 } 5765 return HANDLED; 5766 } 5767 } 5768 5769 class DriverStoppingState extends State { 5770 @Override 5771 public boolean processMessage(Message message) { 5772 logStateAndMessage(message, getClass().getSimpleName()); 5773 5774 switch(message.what) { 5775 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5776 SupplicantState state = handleSupplicantStateChange(message); 5777 if (state == SupplicantState.INTERFACE_DISABLED) { 5778 transitionTo(mDriverStoppedState); 5779 } 5780 break; 5781 /* Queue driver commands */ 5782 case CMD_START_DRIVER: 5783 case CMD_STOP_DRIVER: 5784 case CMD_SET_COUNTRY_CODE: 5785 case CMD_SET_FREQUENCY_BAND: 5786 case CMD_START_PACKET_FILTERING: 5787 case CMD_STOP_PACKET_FILTERING: 5788 case CMD_START_SCAN: 5789 case CMD_DISCONNECT: 5790 case CMD_REASSOCIATE: 5791 case CMD_RECONNECT: 5792 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5793 deferMessage(message); 5794 break; 5795 default: 5796 return NOT_HANDLED; 5797 } 5798 return HANDLED; 5799 } 5800 } 5801 5802 class DriverStoppedState extends State { 5803 @Override 5804 public boolean processMessage(Message message) { 5805 logStateAndMessage(message, getClass().getSimpleName()); 5806 switch (message.what) { 5807 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5808 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 5809 SupplicantState state = stateChangeResult.state; 5810 // A WEXT bug means that we can be back to driver started state 5811 // unexpectedly 5812 if (SupplicantState.isDriverActive(state)) { 5813 transitionTo(mDriverStartedState); 5814 } 5815 break; 5816 case CMD_START_DRIVER: 5817 mWakeLock.acquire(); 5818 mWifiNative.startDriver(); 5819 mWakeLock.release(); 5820 transitionTo(mDriverStartingState); 5821 break; 5822 default: 5823 return NOT_HANDLED; 5824 } 5825 return HANDLED; 5826 } 5827 } 5828 5829 class ScanModeState extends State { 5830 private int mLastOperationMode; 5831 @Override 5832 public void enter() { 5833 mLastOperationMode = mOperationalMode; 5834 } 5835 @Override 5836 public boolean processMessage(Message message) { 5837 logStateAndMessage(message, getClass().getSimpleName()); 5838 5839 switch(message.what) { 5840 case CMD_SET_OPERATIONAL_MODE: 5841 if (message.arg1 == CONNECT_MODE) { 5842 5843 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5844 setWifiState(WIFI_STATE_ENABLED); 5845 // Load and re-enable networks when going back to enabled state 5846 // This is essential for networks to show up after restore 5847 mWifiConfigStore.loadAndEnableAllNetworks(); 5848 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 5849 } else { 5850 mWifiConfigStore.enableAllNetworks(); 5851 } 5852 5853 // Try autojoining with recent network already present in the cache 5854 // If none are found then trigger a scan which will trigger autojoin 5855 // upon reception of scan results event 5856 if (!mWifiAutoJoinController.attemptAutoJoin()) { 5857 startScan(ENABLE_WIFI, 0, null, null); 5858 } 5859 5860 // Loose last selection choice since user toggled WiFi 5861 mWifiConfigStore. 5862 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5863 5864 mOperationalMode = CONNECT_MODE; 5865 transitionTo(mDisconnectedState); 5866 } else { 5867 // Nothing to do 5868 return HANDLED; 5869 } 5870 break; 5871 // Handle scan. All the connection related commands are 5872 // handled only in ConnectModeState 5873 case CMD_START_SCAN: 5874 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5875 break; 5876 default: 5877 return NOT_HANDLED; 5878 } 5879 return HANDLED; 5880 } 5881 } 5882 5883 5884 String smToString(Message message) { 5885 return smToString(message.what); 5886 } 5887 5888 String smToString(int what) { 5889 String s = "unknown"; 5890 switch (what) { 5891 case WifiMonitor.DRIVER_HUNG_EVENT: 5892 s = "DRIVER_HUNG_EVENT"; 5893 break; 5894 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 5895 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 5896 break; 5897 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 5898 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 5899 break; 5900 case CMD_SET_FREQUENCY_BAND: 5901 s = "CMD_SET_FREQUENCY_BAND"; 5902 break; 5903 case CMD_DELAYED_NETWORK_DISCONNECT: 5904 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 5905 break; 5906 case CMD_TEST_NETWORK_DISCONNECT: 5907 s = "CMD_TEST_NETWORK_DISCONNECT"; 5908 break; 5909 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5910 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 5911 break; 5912 case CMD_DISABLE_EPHEMERAL_NETWORK: 5913 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 5914 break; 5915 case CMD_START_DRIVER: 5916 s = "CMD_START_DRIVER"; 5917 break; 5918 case CMD_STOP_DRIVER: 5919 s = "CMD_STOP_DRIVER"; 5920 break; 5921 case CMD_STOP_SUPPLICANT: 5922 s = "CMD_STOP_SUPPLICANT"; 5923 break; 5924 case CMD_STOP_SUPPLICANT_FAILED: 5925 s = "CMD_STOP_SUPPLICANT_FAILED"; 5926 break; 5927 case CMD_START_SUPPLICANT: 5928 s = "CMD_START_SUPPLICANT"; 5929 break; 5930 case CMD_REQUEST_AP_CONFIG: 5931 s = "CMD_REQUEST_AP_CONFIG"; 5932 break; 5933 case CMD_RESPONSE_AP_CONFIG: 5934 s = "CMD_RESPONSE_AP_CONFIG"; 5935 break; 5936 case CMD_TETHER_STATE_CHANGE: 5937 s = "CMD_TETHER_STATE_CHANGE"; 5938 break; 5939 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5940 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 5941 break; 5942 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5943 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 5944 break; 5945 case CMD_ADD_OR_UPDATE_NETWORK: 5946 s = "CMD_ADD_OR_UPDATE_NETWORK"; 5947 break; 5948 case CMD_REMOVE_NETWORK: 5949 s = "CMD_REMOVE_NETWORK"; 5950 break; 5951 case CMD_ENABLE_NETWORK: 5952 s = "CMD_ENABLE_NETWORK"; 5953 break; 5954 case CMD_ENABLE_ALL_NETWORKS: 5955 s = "CMD_ENABLE_ALL_NETWORKS"; 5956 break; 5957 case CMD_AUTO_CONNECT: 5958 s = "CMD_AUTO_CONNECT"; 5959 break; 5960 case CMD_AUTO_ROAM: 5961 s = "CMD_AUTO_ROAM"; 5962 break; 5963 case CMD_AUTO_SAVE_NETWORK: 5964 s = "CMD_AUTO_SAVE_NETWORK"; 5965 break; 5966 case CMD_BOOT_COMPLETED: 5967 s = "CMD_BOOT_COMPLETED"; 5968 break; 5969 case DhcpStateMachine.CMD_START_DHCP: 5970 s = "CMD_START_DHCP"; 5971 break; 5972 case DhcpStateMachine.CMD_STOP_DHCP: 5973 s = "CMD_STOP_DHCP"; 5974 break; 5975 case DhcpStateMachine.CMD_RENEW_DHCP: 5976 s = "CMD_RENEW_DHCP"; 5977 break; 5978 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5979 s = "CMD_PRE_DHCP_ACTION"; 5980 break; 5981 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5982 s = "CMD_POST_DHCP_ACTION"; 5983 break; 5984 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 5985 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 5986 break; 5987 case DhcpStateMachine.CMD_ON_QUIT: 5988 s = "CMD_ON_QUIT"; 5989 break; 5990 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5991 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 5992 break; 5993 case WifiManager.DISABLE_NETWORK: 5994 s = "WifiManager.DISABLE_NETWORK"; 5995 break; 5996 case CMD_BLACKLIST_NETWORK: 5997 s = "CMD_BLACKLIST_NETWORK"; 5998 break; 5999 case CMD_CLEAR_BLACKLIST: 6000 s = "CMD_CLEAR_BLACKLIST"; 6001 break; 6002 case CMD_SAVE_CONFIG: 6003 s = "CMD_SAVE_CONFIG"; 6004 break; 6005 case CMD_GET_CONFIGURED_NETWORKS: 6006 s = "CMD_GET_CONFIGURED_NETWORKS"; 6007 break; 6008 case CMD_GET_SUPPORTED_FEATURES: 6009 s = "CMD_GET_ADAPTORS"; 6010 break; 6011 case CMD_UNWANTED_NETWORK: 6012 s = "CMD_UNWANTED_NETWORK"; 6013 break; 6014 case CMD_NETWORK_STATUS: 6015 s = "CMD_NETWORK_STATUS"; 6016 break; 6017 case CMD_GET_LINK_LAYER_STATS: 6018 s = "CMD_GET_LINK_LAYER_STATS"; 6019 break; 6020 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6021 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6022 break; 6023 case CMD_DISCONNECT: 6024 s = "CMD_DISCONNECT"; 6025 break; 6026 case CMD_RECONNECT: 6027 s = "CMD_RECONNECT"; 6028 break; 6029 case CMD_REASSOCIATE: 6030 s = "CMD_REASSOCIATE"; 6031 break; 6032 case CMD_GET_CONNECTION_STATISTICS: 6033 s = "CMD_GET_CONNECTION_STATISTICS"; 6034 break; 6035 case CMD_SET_HIGH_PERF_MODE: 6036 s = "CMD_SET_HIGH_PERF_MODE"; 6037 break; 6038 case CMD_SET_COUNTRY_CODE: 6039 s = "CMD_SET_COUNTRY_CODE"; 6040 break; 6041 case CMD_ENABLE_RSSI_POLL: 6042 s = "CMD_ENABLE_RSSI_POLL"; 6043 break; 6044 case CMD_RSSI_POLL: 6045 s = "CMD_RSSI_POLL"; 6046 break; 6047 case CMD_START_PACKET_FILTERING: 6048 s = "CMD_START_PACKET_FILTERING"; 6049 break; 6050 case CMD_STOP_PACKET_FILTERING: 6051 s = "CMD_STOP_PACKET_FILTERING"; 6052 break; 6053 case CMD_SET_SUSPEND_OPT_ENABLED: 6054 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6055 break; 6056 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6057 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6058 break; 6059 case CMD_SET_BATCHED_SCAN: 6060 s = "CMD_SET_BATCHED_SCAN"; 6061 break; 6062 case CMD_START_NEXT_BATCHED_SCAN: 6063 s = "CMD_START_NEXT_BATCHED_SCAN"; 6064 break; 6065 case CMD_POLL_BATCHED_SCAN: 6066 s = "CMD_POLL_BATCHED_SCAN"; 6067 break; 6068 case CMD_UPDATE_LINKPROPERTIES: 6069 s = "CMD_UPDATE_LINKPROPERTIES"; 6070 break; 6071 case CMD_RELOAD_TLS_AND_RECONNECT: 6072 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6073 break; 6074 case WifiManager.CONNECT_NETWORK: 6075 s = "CONNECT_NETWORK"; 6076 break; 6077 case WifiManager.SAVE_NETWORK: 6078 s = "SAVE_NETWORK"; 6079 break; 6080 case WifiManager.FORGET_NETWORK: 6081 s = "FORGET_NETWORK"; 6082 break; 6083 case WifiMonitor.SUP_CONNECTION_EVENT: 6084 s = "SUP_CONNECTION_EVENT"; 6085 break; 6086 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6087 s = "SUP_DISCONNECTION_EVENT"; 6088 break; 6089 case WifiMonitor.SCAN_RESULTS_EVENT: 6090 s = "SCAN_RESULTS_EVENT"; 6091 break; 6092 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6093 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6094 break; 6095 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6096 s = "AUTHENTICATION_FAILURE_EVENT"; 6097 break; 6098 case WifiMonitor.SSID_TEMP_DISABLED: 6099 s = "SSID_TEMP_DISABLED"; 6100 break; 6101 case WifiMonitor.SSID_REENABLED: 6102 s = "SSID_REENABLED"; 6103 break; 6104 case WifiMonitor.WPS_SUCCESS_EVENT: 6105 s = "WPS_SUCCESS_EVENT"; 6106 break; 6107 case WifiMonitor.WPS_FAIL_EVENT: 6108 s = "WPS_FAIL_EVENT"; 6109 break; 6110 case WifiMonitor.SUP_REQUEST_IDENTITY: 6111 s = "SUP_REQUEST_IDENTITY"; 6112 break; 6113 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6114 s = "NETWORK_CONNECTION_EVENT"; 6115 break; 6116 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6117 s = "NETWORK_DISCONNECTION_EVENT"; 6118 break; 6119 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6120 s = "ASSOCIATION_REJECTION_EVENT"; 6121 break; 6122 case CMD_SET_OPERATIONAL_MODE: 6123 s = "CMD_SET_OPERATIONAL_MODE"; 6124 break; 6125 case CMD_START_SCAN: 6126 s = "CMD_START_SCAN"; 6127 break; 6128 case CMD_DISABLE_P2P_RSP: 6129 s = "CMD_DISABLE_P2P_RSP"; 6130 break; 6131 case CMD_DISABLE_P2P_REQ: 6132 s = "CMD_DISABLE_P2P_REQ"; 6133 break; 6134 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6135 s = "GOOD_LINK_DETECTED"; 6136 break; 6137 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6138 s = "POOR_LINK_DETECTED"; 6139 break; 6140 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6141 s = "GROUP_CREATING_TIMED_OUT"; 6142 break; 6143 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6144 s = "P2P_CONNECTION_CHANGED"; 6145 break; 6146 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6147 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6148 break; 6149 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6150 s = "P2P.SET_MIRACAST_MODE"; 6151 break; 6152 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6153 s = "P2P.BLOCK_DISCOVERY"; 6154 break; 6155 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6156 s = "P2P.SET_COUNTRY_CODE"; 6157 break; 6158 case WifiManager.CANCEL_WPS: 6159 s = "CANCEL_WPS"; 6160 break; 6161 case WifiManager.CANCEL_WPS_FAILED: 6162 s = "CANCEL_WPS_FAILED"; 6163 break; 6164 case WifiManager.CANCEL_WPS_SUCCEDED: 6165 s = "CANCEL_WPS_SUCCEDED"; 6166 break; 6167 case WifiManager.START_WPS: 6168 s = "START_WPS"; 6169 break; 6170 case WifiManager.START_WPS_SUCCEEDED: 6171 s = "START_WPS_SUCCEEDED"; 6172 break; 6173 case WifiManager.WPS_FAILED: 6174 s = "WPS_FAILED"; 6175 break; 6176 case WifiManager.WPS_COMPLETED: 6177 s = "WPS_COMPLETED"; 6178 break; 6179 case WifiManager.RSSI_PKTCNT_FETCH: 6180 s = "RSSI_PKTCNT_FETCH"; 6181 break; 6182 case CMD_IP_CONFIGURATION_LOST: 6183 s = "CMD_IP_CONFIGURATION_LOST"; 6184 break; 6185 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6186 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6187 break; 6188 case CMD_STATIC_IP_SUCCESS: 6189 s = "CMD_STATIC_IP_SUCCESSFUL"; 6190 break; 6191 case CMD_STATIC_IP_FAILURE: 6192 s = "CMD_STATIC_IP_FAILURE"; 6193 break; 6194 case DhcpStateMachine.DHCP_SUCCESS: 6195 s = "DHCP_SUCCESS"; 6196 break; 6197 case DhcpStateMachine.DHCP_FAILURE: 6198 s = "DHCP_FAILURE"; 6199 break; 6200 case CMD_TARGET_BSSID: 6201 s = "CMD_TARGET_BSSID"; 6202 break; 6203 case CMD_ASSOCIATED_BSSID: 6204 s = "CMD_ASSOCIATED_BSSID"; 6205 break; 6206 case CMD_ROAM_WATCHDOG_TIMER: 6207 s = "CMD_ROAM_WATCHDOG_TIMER"; 6208 break; 6209 case CMD_SCREEN_STATE_CHANGED: 6210 s = "CMD_SCREEN_STATE_CHANGED"; 6211 break; 6212 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6213 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6214 break; 6215 default: 6216 s = "what:" + Integer.toString(what); 6217 break; 6218 } 6219 return s; 6220 } 6221 6222 void registerConnected() { 6223 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6224 long now_ms = System.currentTimeMillis(); 6225 // We are switching away from this configuration, 6226 // hence record the time we were connected last 6227 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6228 if (config != null) { 6229 config.lastConnected = System.currentTimeMillis(); 6230 config.autoJoinBailedDueToLowRssi = false; 6231 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 6232 config.numConnectionFailures = 0; 6233 config.numIpConfigFailures = 0; 6234 config.numAuthFailures = 0; 6235 config.numAssociation++; 6236 } 6237 mBadLinkspeedcount = 0; 6238 } 6239 } 6240 6241 void registerDisconnected() { 6242 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6243 long now_ms = System.currentTimeMillis(); 6244 // We are switching away from this configuration, 6245 // hence record the time we were connected last 6246 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6247 if (config != null) { 6248 config.lastDisconnected = System.currentTimeMillis(); 6249 if (config.ephemeral) { 6250 // Remove ephemeral WifiConfigurations from file 6251 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6252 } 6253 } 6254 } 6255 } 6256 6257 void noteWifiDisabledWhileAssociated() { 6258 // We got disabled by user while we were associated, make note of it 6259 int rssi = mWifiInfo.getRssi(); 6260 WifiConfiguration config = getCurrentWifiConfiguration(); 6261 if (getCurrentState() == mConnectedState 6262 && rssi != WifiInfo.INVALID_RSSI 6263 && config != null) { 6264 boolean is24GHz = mWifiInfo.is24GHz(); 6265 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 6266 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 6267 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 6268 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 6269 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 6270 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 6271 if (isBadRSSI) { 6272 // Take note that we got disabled while RSSI was Bad 6273 config.numUserTriggeredWifiDisableLowRSSI++; 6274 } else if (isLowRSSI) { 6275 // Take note that we got disabled while RSSI was Low 6276 config.numUserTriggeredWifiDisableBadRSSI++; 6277 } else if (!isHighRSSI) { 6278 // Take note that we got disabled while RSSI was Not high 6279 config.numUserTriggeredWifiDisableNotHighRSSI++; 6280 } 6281 } 6282 } 6283 6284 WifiConfiguration getCurrentWifiConfiguration() { 6285 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6286 return null; 6287 } 6288 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6289 } 6290 6291 ScanResult getCurrentScanResult() { 6292 WifiConfiguration config = getCurrentWifiConfiguration(); 6293 if (config == null) { 6294 return null; 6295 } 6296 String BSSID = mWifiInfo.getBSSID(); 6297 if (BSSID == null) { 6298 BSSID = mTargetRoamBSSID; 6299 } 6300 if (config.scanResultCache == null) { 6301 return null; 6302 } 6303 return config.scanResultCache.get(BSSID); 6304 } 6305 6306 String getCurrentBSSID() { 6307 if (linkDebouncing) { 6308 return null; 6309 } 6310 return mLastBssid; 6311 } 6312 6313 class ConnectModeState extends State { 6314 @Override 6315 public boolean processMessage(Message message) { 6316 WifiConfiguration config; 6317 int netId; 6318 boolean ok; 6319 boolean didDisconnect; 6320 String bssid; 6321 String ssid; 6322 NetworkUpdateResult result; 6323 logStateAndMessage(message, getClass().getSimpleName()); 6324 6325 switch (message.what) { 6326 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6327 didBlackListBSSID = false; 6328 bssid = (String) message.obj; 6329 if (bssid == null || TextUtils.isEmpty(bssid)) { 6330 // If BSSID is null, use the target roam BSSID 6331 bssid = mTargetRoamBSSID; 6332 } 6333 if (bssid != null) { 6334 // If we have a BSSID, tell configStore to black list it 6335 synchronized(mScanResultCache) { 6336 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 6337 (mLastNetworkId, bssid, false); 6338 } 6339 } 6340 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6341 break; 6342 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6343 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6344 break; 6345 case WifiMonitor.SSID_TEMP_DISABLED: 6346 case WifiMonitor.SSID_REENABLED: 6347 String substr = (String) message.obj; 6348 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 6349 "temp-disabled" : "re-enabled"; 6350 loge("ConnectModeState SSID state=" + en + " nid=" 6351 + Integer.toString(message.arg1) + " [" + substr + "]"); 6352 synchronized(mScanResultCache) { 6353 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 6354 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 6355 } 6356 break; 6357 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6358 SupplicantState state = handleSupplicantStateChange(message); 6359 // A driver/firmware hang can now put the interface in a down state. 6360 // We detect the interface going down and recover from it 6361 if (!SupplicantState.isDriverActive(state)) { 6362 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6363 handleNetworkDisconnect(); 6364 } 6365 log("Detected an interface down, restart driver"); 6366 transitionTo(mDriverStoppedState); 6367 sendMessage(CMD_START_DRIVER); 6368 break; 6369 } 6370 6371 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 6372 // when authentication times out after a successful connection, 6373 // we can figure this from the supplicant state. If supplicant 6374 // state is DISCONNECTED, but the mNetworkInfo says we are not 6375 // disconnected, we need to handle a disconnection 6376 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 6377 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6378 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 6379 handleNetworkDisconnect(); 6380 transitionTo(mDisconnectedState); 6381 } 6382 break; 6383 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6384 if (message.arg1 == 1) { 6385 mWifiNative.disconnect(); 6386 mTemporarilyDisconnectWifi = true; 6387 } else { 6388 mWifiNative.reconnect(); 6389 mTemporarilyDisconnectWifi = false; 6390 } 6391 break; 6392 case CMD_ADD_OR_UPDATE_NETWORK: 6393 config = (WifiConfiguration) message.obj; 6394 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 6395 if (res < 0) { 6396 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6397 } else { 6398 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 6399 if (curConfig != null && config != null) { 6400 if (curConfig.priority < config.priority 6401 && config.status == WifiConfiguration.Status.ENABLED) { 6402 // Interpret this as a connect attempt 6403 // Set the last selected configuration so as to allow the system to 6404 // stick the last user choice without persisting the choice 6405 mWifiConfigStore.setLastSelectedConfiguration(res); 6406 6407 // Remember time of last connection attempt 6408 lastConnectAttempt = System.currentTimeMillis(); 6409 6410 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6411 6412 // As a courtesy to the caller, trigger a scan now 6413 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 6414 } 6415 } 6416 } 6417 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 6418 break; 6419 case CMD_REMOVE_NETWORK: 6420 ok = mWifiConfigStore.removeNetwork(message.arg1); 6421 if (!ok) { 6422 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6423 } 6424 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6425 break; 6426 case CMD_ENABLE_NETWORK: 6427 boolean others = message.arg2 == 1; 6428 // Tell autojoin the user did try to select to that network 6429 // However, do NOT persist the choice by bumping the priority of the network 6430 if (others) { 6431 mWifiAutoJoinController. 6432 updateConfigurationHistory(message.arg1, true, false); 6433 // Set the last selected configuration so as to allow the system to 6434 // stick the last user choice without persisting the choice 6435 mWifiConfigStore.setLastSelectedConfiguration(message.arg1); 6436 6437 // Remember time of last connection attempt 6438 lastConnectAttempt = System.currentTimeMillis(); 6439 6440 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6441 } 6442 // Cancel auto roam requests 6443 autoRoamSetBSSID(message.arg1, "any"); 6444 6445 ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1); 6446 if (!ok) { 6447 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6448 } 6449 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6450 break; 6451 case CMD_ENABLE_ALL_NETWORKS: 6452 long time = android.os.SystemClock.elapsedRealtime(); 6453 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 6454 mWifiConfigStore.enableAllNetworks(); 6455 mLastEnableAllNetworksTime = time; 6456 } 6457 break; 6458 case WifiManager.DISABLE_NETWORK: 6459 if (mWifiConfigStore.disableNetwork(message.arg1, 6460 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 6461 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 6462 } else { 6463 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6464 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 6465 WifiManager.ERROR); 6466 } 6467 break; 6468 case CMD_DISABLE_EPHEMERAL_NETWORK: 6469 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 6470 if (config != null) { 6471 if (config.networkId == mLastNetworkId) { 6472 // Disconnect and let autojoin reselect a new network 6473 sendMessage(CMD_DISCONNECT); 6474 } 6475 } 6476 break; 6477 case CMD_BLACKLIST_NETWORK: 6478 mWifiNative.addToBlacklist((String) message.obj); 6479 break; 6480 case CMD_CLEAR_BLACKLIST: 6481 mWifiNative.clearBlacklist(); 6482 break; 6483 case CMD_SAVE_CONFIG: 6484 ok = mWifiConfigStore.saveConfig(); 6485 6486 if (DBG) loge("wifistatemachine did save config " + ok); 6487 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 6488 6489 // Inform the backup manager about a data change 6490 IBackupManager ibm = IBackupManager.Stub.asInterface( 6491 ServiceManager.getService(Context.BACKUP_SERVICE)); 6492 if (ibm != null) { 6493 try { 6494 ibm.dataChanged("com.android.providers.settings"); 6495 } catch (Exception e) { 6496 // Try again later 6497 } 6498 } 6499 break; 6500 case CMD_GET_CONFIGURED_NETWORKS: 6501 replyToMessage(message, message.what, 6502 mWifiConfigStore.getConfiguredNetworks()); 6503 break; 6504 case WifiMonitor.SUP_REQUEST_IDENTITY: 6505 // Supplicant lacks credentials to connect to that network, hence black list 6506 ssid = (String) message.obj; 6507 6508 if (targetWificonfiguration != null && ssid != null 6509 && targetWificonfiguration.SSID != null 6510 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 6511 mWifiConfigStore.handleSSIDStateChange(targetWificonfiguration.networkId, 6512 false, "AUTH_FAILED no identity", null); 6513 } 6514 // Disconnect now, as we don't have any way to fullfill the supplicant request. 6515 mWifiConfigStore.setLastSelectedConfiguration 6516 (WifiConfiguration.INVALID_NETWORK_ID); 6517 mWifiNative.disconnect(); 6518 break; 6519 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 6520 logd("Received SUP_REQUEST_SIM_AUTH"); 6521 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 6522 if (requestData != null) { 6523 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 6524 handleGsmAuthRequest(requestData); 6525 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA) { 6526 handle3GAuthRequest(requestData); 6527 } 6528 } else { 6529 loge("Invalid sim auth request"); 6530 } 6531 break; 6532 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6533 replyToMessage(message, message.what, 6534 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 6535 break; 6536 /* Do a redundant disconnect without transition */ 6537 case CMD_DISCONNECT: 6538 mWifiConfigStore.setLastSelectedConfiguration 6539 (WifiConfiguration.INVALID_NETWORK_ID); 6540 mWifiNative.disconnect(); 6541 break; 6542 case CMD_RECONNECT: 6543 mWifiAutoJoinController.attemptAutoJoin(); 6544 break; 6545 case CMD_REASSOCIATE: 6546 lastConnectAttempt = System.currentTimeMillis(); 6547 mWifiNative.reassociate(); 6548 break; 6549 case CMD_RELOAD_TLS_AND_RECONNECT: 6550 if (mWifiConfigStore.needsUnlockedKeyStore()) { 6551 logd("Reconnecting to give a chance to un-connected TLS networks"); 6552 mWifiNative.disconnect(); 6553 lastConnectAttempt = System.currentTimeMillis(); 6554 mWifiNative.reconnect(); 6555 } 6556 break; 6557 case CMD_AUTO_ROAM: 6558 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 6559 return HANDLED; 6560 case CMD_AUTO_CONNECT: 6561 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 6562 * associated status to the STATUS command but somehow-someplace still thinks 6563 * it is associated and thus will ignore select/reconnect command with 6564 * following message: 6565 * "Already associated with the selected network - do nothing" 6566 * 6567 * Hence, sends a disconnect to supplicant first. 6568 */ 6569 didDisconnect = false; 6570 if (getCurrentState() != mDisconnectedState) { 6571 /** Supplicant will ignore the reconnect if we are currently associated, 6572 * hence trigger a disconnect 6573 */ 6574 didDisconnect = true; 6575 mWifiNative.disconnect(); 6576 } 6577 6578 /* connect command coming from auto-join */ 6579 config = (WifiConfiguration) message.obj; 6580 netId = message.arg1; 6581 int roam = message.arg2; 6582 loge("CMD_AUTO_CONNECT sup state " 6583 + mSupplicantStateTracker.getSupplicantStateName() 6584 + " my state " + getCurrentState().getName() 6585 + " nid=" + Integer.toString(netId) 6586 + " roam=" + Integer.toString(roam)); 6587 if (config == null) { 6588 loge("AUTO_CONNECT and no config, bail out..."); 6589 break; 6590 } 6591 6592 /* Make sure we cancel any previous roam request */ 6593 autoRoamSetBSSID(netId, config.BSSID); 6594 6595 /* Save the network config */ 6596 loge("CMD_AUTO_CONNECT will save config -> " + config.SSID 6597 + " nid=" + Integer.toString(netId)); 6598 result = mWifiConfigStore.saveNetwork(config, -1); 6599 netId = result.getNetworkId(); 6600 loge("CMD_AUTO_CONNECT did save config -> " 6601 + " nid=" + Integer.toString(netId)); 6602 6603 // Make sure the network is enabled, since supplicant will not reenable it 6604 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6605 6606 if (mWifiConfigStore.selectNetwork(netId) && 6607 mWifiNative.reconnect()) { 6608 lastConnectAttempt = System.currentTimeMillis(); 6609 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6610 config = mWifiConfigStore.getWifiConfiguration(netId); 6611 if (config != null 6612 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 6613 // If we autojoined a different config than the user selected one, 6614 // it means we could not see the last user selection, 6615 // or that the last user selection was faulty and ended up blacklisted 6616 // for some reason (in which case the user is notified with an error 6617 // message in the Wifi picker), and thus we managed to auto-join away 6618 // from the selected config. -> in that case we need to forget 6619 // the selection because we don't want to abruptly switch back to it. 6620 // 6621 // Note that the user selection is also forgotten after a period of time 6622 // during which the device has been disconnected. 6623 // The default value is 30 minutes : see the code path at bottom of 6624 // setScanResults() function. 6625 mWifiConfigStore. 6626 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6627 } 6628 mAutoRoaming = roam; 6629 if (isRoaming() || linkDebouncing) { 6630 transitionTo(mRoamingState); 6631 } else if (didDisconnect) { 6632 transitionTo(mDisconnectingState); 6633 } else { 6634 /* Already in disconnected state, nothing to change */ 6635 } 6636 } else { 6637 loge("Failed to connect config: " + config + " netId: " + netId); 6638 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6639 WifiManager.ERROR); 6640 break; 6641 } 6642 break; 6643 case WifiManager.CONNECT_NETWORK: 6644 /** 6645 * The connect message can contain a network id passed as arg1 on message or 6646 * or a config passed as obj on message. 6647 * For a new network, a config is passed to create and connect. 6648 * For an existing network, a network id is passed 6649 */ 6650 netId = message.arg1; 6651 config = (WifiConfiguration) message.obj; 6652 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6653 boolean updatedExisting = false; 6654 6655 /* Save the network config */ 6656 if (config != null) { 6657 String configKey = config.configKey(true /* allowCached */); 6658 WifiConfiguration savedConfig = 6659 mWifiConfigStore.getWifiConfiguration(configKey); 6660 if (savedConfig != null) { 6661 // There is an existing config with this netId, but it wasn't exposed 6662 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 6663 // getConfiguredNetworks). Remove those bits and update the config. 6664 config = savedConfig; 6665 loge("CONNECT_NETWORK updating existing config with id=" + 6666 config.networkId + " configKey=" + configKey); 6667 config.ephemeral = false; 6668 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 6669 updatedExisting = true; 6670 } 6671 6672 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 6673 netId = result.getNetworkId(); 6674 } 6675 config = mWifiConfigStore.getWifiConfiguration(netId); 6676 6677 if (config == null) { 6678 loge("CONNECT_NETWORK id=" + Integer.toString(netId) + " " 6679 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 6680 + getCurrentState().getName()); 6681 } else { 6682 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 6683 loge("CONNECT_NETWORK id=" + Integer.toString(netId) 6684 + " config=" + config.SSID 6685 + " cnid=" + config.networkId 6686 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 6687 + " my state " + getCurrentState().getName() 6688 + " uid = " + message.sendingUid 6689 + wasSkipped); 6690 } 6691 6692 autoRoamSetBSSID(netId, "any"); 6693 6694 if (message.sendingUid == Process.WIFI_UID 6695 || message.sendingUid == Process.SYSTEM_UID) { 6696 // As a sanity measure, clear the BSSID in the supplicant network block. 6697 // If system or Wifi Settings want to connect, they will not 6698 // specify the BSSID. 6699 // If an app however had added a BSSID to this configuration, and the BSSID 6700 // was wrong, Then we would forever fail to connect until that BSSID 6701 // is cleaned up. 6702 clearConfigBSSID(config, "CONNECT_NETWORK"); 6703 } 6704 6705 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 6706 6707 /* Tell autojoin the user did try to connect to that network */ 6708 mWifiAutoJoinController.updateConfigurationHistory(netId, true, true); 6709 6710 mWifiConfigStore.setLastSelectedConfiguration(netId); 6711 6712 didDisconnect = false; 6713 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 6714 && mLastNetworkId != netId) { 6715 /** Supplicant will ignore the reconnect if we are currently associated, 6716 * hence trigger a disconnect 6717 */ 6718 didDisconnect = true; 6719 mWifiNative.disconnect(); 6720 } 6721 6722 // Make sure the network is enabled, since supplicant will not reenable it 6723 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6724 6725 if (mWifiConfigStore.selectNetwork(netId) && 6726 mWifiNative.reconnect()) { 6727 lastConnectAttempt = System.currentTimeMillis(); 6728 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6729 6730 /* The state tracker handles enabling networks upon completion/failure */ 6731 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 6732 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 6733 if (didDisconnect) { 6734 /* Expect a disconnection from the old connection */ 6735 transitionTo(mDisconnectingState); 6736 } else if (updatedExisting && getCurrentState() == mConnectedState && 6737 getCurrentWifiConfiguration().networkId == netId) { 6738 // Update the current set of network capabilities, but stay in the 6739 // current state. 6740 updateCapabilities(config); 6741 } else { 6742 /** 6743 * Directly go to disconnected state where we 6744 * process the connection events from supplicant 6745 **/ 6746 transitionTo(mDisconnectedState); 6747 } 6748 } else { 6749 loge("Failed to connect config: " + config + " netId: " + netId); 6750 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6751 WifiManager.ERROR); 6752 break; 6753 } 6754 break; 6755 case WifiManager.SAVE_NETWORK: 6756 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6757 // Fall thru 6758 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 6759 lastSavedConfigurationAttempt = null; // Used for debug 6760 config = (WifiConfiguration) message.obj; 6761 if (config == null) { 6762 loge("ERROR: SAVE_NETWORK with null configuration" 6763 + mSupplicantStateTracker.getSupplicantStateName() 6764 + " my state " + getCurrentState().getName()); 6765 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6766 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 6767 WifiManager.ERROR); 6768 break; 6769 } 6770 lastSavedConfigurationAttempt = new WifiConfiguration(config); 6771 int nid = config.networkId; 6772 loge("SAVE_NETWORK id=" + Integer.toString(nid) 6773 + " config=" + config.SSID 6774 + " nid=" + config.networkId 6775 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 6776 + " my state " + getCurrentState().getName()); 6777 6778 result = mWifiConfigStore.saveNetwork(config, -1); 6779 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 6780 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 6781 if (result.hasIpChanged()) { 6782 // The currently connection configuration was changed 6783 // We switched from DHCP to static or from static to DHCP, or the 6784 // static IP address has changed. 6785 log("Reconfiguring IP on connection"); 6786 // TODO: clear addresses and disable IPv6 6787 // to simplify obtainingIpState. 6788 transitionTo(mObtainingIpState); 6789 } 6790 if (result.hasProxyChanged()) { 6791 log("Reconfiguring proxy on connection"); 6792 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 6793 } 6794 } 6795 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 6796 if (VDBG) { 6797 loge("Success save network nid=" 6798 + Integer.toString(result.getNetworkId())); 6799 } 6800 6801 synchronized(mScanResultCache) { 6802 /** 6803 * If the command comes from WifiManager, then 6804 * tell autojoin the user did try to modify and save that network, 6805 * and interpret the SAVE_NETWORK as a request to connect 6806 */ 6807 boolean user = message.what == WifiManager.SAVE_NETWORK; 6808 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 6809 , user, true); 6810 mWifiAutoJoinController.attemptAutoJoin(); 6811 } 6812 } else { 6813 loge("Failed to save network"); 6814 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6815 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 6816 WifiManager.ERROR); 6817 } 6818 break; 6819 case WifiManager.FORGET_NETWORK: 6820 // Debug only, remember last configuration that was forgotten 6821 WifiConfiguration toRemove 6822 = mWifiConfigStore.getWifiConfiguration(message.arg1); 6823 if (toRemove == null) { 6824 lastForgetConfigurationAttempt = null; 6825 } else { 6826 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 6827 } 6828 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 6829 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 6830 } else { 6831 loge("Failed to forget network"); 6832 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 6833 WifiManager.ERROR); 6834 } 6835 break; 6836 case WifiManager.START_WPS: 6837 WpsInfo wpsInfo = (WpsInfo) message.obj; 6838 WpsResult wpsResult; 6839 switch (wpsInfo.setup) { 6840 case WpsInfo.PBC: 6841 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 6842 break; 6843 case WpsInfo.KEYPAD: 6844 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 6845 break; 6846 case WpsInfo.DISPLAY: 6847 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 6848 break; 6849 default: 6850 wpsResult = new WpsResult(Status.FAILURE); 6851 loge("Invalid setup for WPS"); 6852 break; 6853 } 6854 mWifiConfigStore.setLastSelectedConfiguration 6855 (WifiConfiguration.INVALID_NETWORK_ID); 6856 if (wpsResult.status == Status.SUCCESS) { 6857 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 6858 transitionTo(mWpsRunningState); 6859 } else { 6860 loge("Failed to start WPS with config " + wpsInfo.toString()); 6861 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 6862 } 6863 break; 6864 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6865 if (DBG) log("Network connection established"); 6866 mLastNetworkId = message.arg1; 6867 mLastBssid = (String) message.obj; 6868 6869 mWifiInfo.setBSSID(mLastBssid); 6870 mWifiInfo.setNetworkId(mLastNetworkId); 6871 6872 sendNetworkStateChangeBroadcast(mLastBssid); 6873 transitionTo(mObtainingIpState); 6874 break; 6875 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6876 // Calling handleNetworkDisconnect here is redundant because we might already 6877 // have called it when leaving L2ConnectedState to go to disconnecting state 6878 // or thru other path 6879 // We should normally check the mWifiInfo or mLastNetworkId so as to check 6880 // if they are valid, and only in this case call handleNEtworkDisconnect, 6881 // TODO: this should be fixed for a L MR release 6882 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 6883 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 6884 // at the chip etc... 6885 if (DBG) log("ConnectModeState: Network connection lost "); 6886 handleNetworkDisconnect(); 6887 transitionTo(mDisconnectedState); 6888 break; 6889 default: 6890 return NOT_HANDLED; 6891 } 6892 return HANDLED; 6893 } 6894 } 6895 6896 private void updateCapabilities(WifiConfiguration config) { 6897 if (config.ephemeral) { 6898 mNetworkCapabilities.removeCapability( 6899 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 6900 } else { 6901 mNetworkCapabilities.addCapability( 6902 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 6903 } 6904 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 6905 } 6906 6907 private class WifiNetworkAgent extends NetworkAgent { 6908 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 6909 NetworkCapabilities nc, LinkProperties lp, int score) { 6910 super(l, c, TAG, ni, nc, lp, score); 6911 } 6912 protected void unwanted() { 6913 // Ignore if we're not the current networkAgent. 6914 if (this != mNetworkAgent) return; 6915 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 6916 + Integer.toString(mWifiInfo.score)); 6917 unwantedNetwork(network_status_unwanted_disconnect); 6918 } 6919 6920 protected void networkStatus(int status) { 6921 if (status == NetworkAgent.INVALID_NETWORK) { 6922 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 6923 + Integer.toString(mWifiInfo.score)); 6924 unwantedNetwork(network_status_unwanted_disable_autojoin); 6925 } else if (status == NetworkAgent.VALID_NETWORK) { 6926 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 6927 + Integer.toString(mWifiInfo.score)); 6928 doNetworkStatus(status); 6929 } 6930 } 6931 } 6932 6933 void unwantedNetwork(int reason) { 6934 sendMessage(CMD_UNWANTED_NETWORK, reason); 6935 } 6936 6937 void doNetworkStatus(int status) { 6938 sendMessage(CMD_NETWORK_STATUS, status); 6939 } 6940 6941 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 6942 if (config == null) 6943 return false; 6944 6945 // We are still seeing a fairly high power consumption triggered by autojoin scans 6946 // Hence do partial scans only for PSK configuration that are roamable since the 6947 // primary purpose of the partial scans is roaming. 6948 // Full badn scans with exponential backoff for the purpose or extended roaming and 6949 // network switching are performed unconditionally. 6950 if (config.scanResultCache == null 6951 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 6952 || config.scanResultCache.size() > 6) { 6953 //return true but to not trigger the scan 6954 return true; 6955 } 6956 HashSet<Integer> channels 6957 = mWifiConfigStore.makeChannelList(config, 6958 ONE_HOUR_MILLI, restrictChannelList); 6959 if (channels != null && channels.size() != 0) { 6960 StringBuilder freqs = new StringBuilder(); 6961 boolean first = true; 6962 for (Integer channel : channels) { 6963 if (!first) 6964 freqs.append(","); 6965 freqs.append(channel.toString()); 6966 first = false; 6967 } 6968 //if (DBG) { 6969 loge("WifiStateMachine starting scan for " + config.configKey() + " with " + freqs); 6970 //} 6971 // Call wifi native to start the scan 6972 if (startScanNative( 6973 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 6974 freqs.toString())) { 6975 // Only count battery consumption if scan request is accepted 6976 noteScanStart(SCAN_ALARM_SOURCE, null); 6977 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 6978 } else { 6979 // used for debug only, mark scan as failed 6980 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 6981 } 6982 return true; 6983 } else { 6984 if (DBG) loge("WifiStateMachine no channels for " + config.configKey()); 6985 return false; 6986 } 6987 } 6988 6989 void clearCurrentConfigBSSID(String dbg) { 6990 // Clear the bssid in the current config's network block 6991 WifiConfiguration config = getCurrentWifiConfiguration(); 6992 if (config == null) 6993 return; 6994 clearConfigBSSID(config, dbg); 6995 } 6996 void clearConfigBSSID(WifiConfiguration config, String dbg) { 6997 if (config == null) 6998 return; 6999 if (DBG) { 7000 loge(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 7001 + " config.bssid " + config.BSSID); 7002 } 7003 config.autoJoinBSSID = "any"; 7004 config.BSSID = "any"; 7005 if (DBG) { 7006 loge(dbg + " " + config.SSID 7007 + " nid=" + Integer.toString(config.networkId)); 7008 } 7009 mWifiConfigStore.saveWifiConfigBSSID(config); 7010 } 7011 7012 class L2ConnectedState extends State { 7013 @Override 7014 public void enter() { 7015 mRssiPollToken++; 7016 if (mEnableRssiPolling) { 7017 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 7018 } 7019 if (mNetworkAgent != null) { 7020 loge("Have NetworkAgent when entering L2Connected"); 7021 setNetworkDetailedState(DetailedState.DISCONNECTED); 7022 } 7023 setNetworkDetailedState(DetailedState.CONNECTING); 7024 7025 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 7026 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 7027 } 7028 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 7029 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 7030 mLinkProperties, 60); 7031 7032 // We must clear the config BSSID, as the wifi chipset may decide to roam 7033 // from this point on and having the BSSID specified in the network block would 7034 // cause the roam to faile and the device to disconnect 7035 clearCurrentConfigBSSID("L2ConnectedState"); 7036 } 7037 7038 @Override 7039 public void exit() { 7040 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 7041 // Bug: 15347363 7042 // For paranoia's sake, call handleNetworkDisconnect 7043 // only if BSSID is null or last networkId 7044 // is not invalid. 7045 if (DBG) { 7046 StringBuilder sb = new StringBuilder(); 7047 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 7048 if (mLastBssid !=null) { 7049 sb.append(" ").append(mLastBssid); 7050 } 7051 } 7052 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7053 handleNetworkDisconnect(); 7054 } 7055 } 7056 7057 @Override 7058 public boolean processMessage(Message message) { 7059 logStateAndMessage(message, getClass().getSimpleName()); 7060 7061 switch (message.what) { 7062 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 7063 handlePreDhcpSetup(); 7064 break; 7065 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 7066 handlePostDhcpSetup(); 7067 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 7068 if (DBG) log("WifiStateMachine DHCP successful"); 7069 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 7070 // We advance to mVerifyingLinkState because handleIPv4Success will call 7071 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 7072 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 7073 if (DBG) { 7074 int count = -1; 7075 WifiConfiguration config = getCurrentWifiConfiguration(); 7076 if (config != null) { 7077 count = config.numConnectionFailures; 7078 } 7079 log("WifiStateMachine DHCP failure count=" + count); 7080 } 7081 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 7082 // As above, we transition to mDisconnectingState via updateLinkProperties. 7083 } 7084 break; 7085 case CMD_IP_CONFIGURATION_SUCCESSFUL: 7086 handleSuccessfulIpConfiguration(); 7087 sendConnectedState(); 7088 transitionTo(mConnectedState); 7089 break; 7090 case CMD_IP_CONFIGURATION_LOST: 7091 // Get Link layer stats so as we get fresh tx packet counters 7092 getWifiLinkLayerStats(true); 7093 handleIpConfigurationLost(); 7094 transitionTo(mDisconnectingState); 7095 break; 7096 case CMD_DISCONNECT: 7097 mWifiNative.disconnect(); 7098 transitionTo(mDisconnectingState); 7099 break; 7100 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7101 if (message.arg1 == 1) { 7102 mWifiNative.disconnect(); 7103 mTemporarilyDisconnectWifi = true; 7104 transitionTo(mDisconnectingState); 7105 } 7106 break; 7107 case CMD_SET_OPERATIONAL_MODE: 7108 if (message.arg1 != CONNECT_MODE) { 7109 sendMessage(CMD_DISCONNECT); 7110 deferMessage(message); 7111 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 7112 noteWifiDisabledWhileAssociated(); 7113 } 7114 mWifiConfigStore. 7115 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7116 } 7117 break; 7118 case CMD_SET_COUNTRY_CODE: 7119 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7120 deferMessage(message); 7121 break; 7122 case CMD_START_SCAN: 7123 //if (DBG) { 7124 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7125 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 7126 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 7127 + " targetRoamBSSID=" + mTargetRoamBSSID 7128 + " RSSI=" + mWifiInfo.getRssi()); 7129 //} 7130 if (message.arg1 == SCAN_ALARM_SOURCE) { 7131 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 7132 // not be processed) and restart the scan if needed 7133 boolean shouldScan = 7134 mScreenOn && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get(); 7135 if (!checkAndRestartDelayedScan(message.arg2, 7136 shouldScan, 7137 mWifiConfigStore.associatedPartialScanPeriodMilli.get(), null, null)) { 7138 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 7139 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7140 + message.arg1 7141 + " " + message.arg2 + ", " + mDelayedScanCounter 7142 + " -> obsolete"); 7143 return HANDLED; 7144 } 7145 if (mP2pConnected.get()) { 7146 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7147 + message.arg1 7148 + " " + message.arg2 + ", " + mDelayedScanCounter 7149 + " ignore because P2P is connected"); 7150 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7151 return HANDLED; 7152 } 7153 boolean tryFullBandScan = false; 7154 boolean restrictChannelList = false; 7155 long now_ms = System.currentTimeMillis(); 7156 if (DBG) { 7157 loge("WifiStateMachine CMD_START_SCAN with age=" 7158 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7159 + " interval=" + fullBandConnectedTimeIntervalMilli 7160 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7161 } 7162 if (mWifiInfo != null) { 7163 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 7164 (now_ms - lastFullBandConnectedTimeMilli) 7165 > fullBandConnectedTimeIntervalMilli) { 7166 if (DBG) { 7167 loge("WifiStateMachine CMD_START_SCAN try full band scan age=" 7168 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7169 + " interval=" + fullBandConnectedTimeIntervalMilli 7170 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7171 } 7172 tryFullBandScan = true; 7173 } 7174 7175 if (mWifiInfo.txSuccessRate > 7176 mWifiConfigStore.maxTxPacketForFullScans 7177 || mWifiInfo.rxSuccessRate > 7178 mWifiConfigStore.maxRxPacketForFullScans) { 7179 // Too much traffic at the interface, hence no full band scan 7180 if (DBG) { 7181 loge("WifiStateMachine CMD_START_SCAN " + 7182 "prevent full band scan due to pkt rate"); 7183 } 7184 tryFullBandScan = false; 7185 } 7186 7187 if (mWifiInfo.txSuccessRate > 7188 mWifiConfigStore.maxTxPacketForPartialScans 7189 || mWifiInfo.rxSuccessRate > 7190 mWifiConfigStore.maxRxPacketForPartialScans) { 7191 // Don't scan if lots of packets are being sent 7192 restrictChannelList = true; 7193 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 7194 if (DBG) { 7195 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7196 + " ...and ignore scans" 7197 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 7198 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 7199 } 7200 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 7201 return HANDLED; 7202 } 7203 } 7204 } 7205 7206 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 7207 if (DBG) { 7208 loge("WifiStateMachine CMD_START_SCAN full=" + 7209 tryFullBandScan); 7210 } 7211 if (currentConfiguration != null) { 7212 if (fullBandConnectedTimeIntervalMilli 7213 < mWifiConfigStore.associatedPartialScanPeriodMilli.get()) { 7214 // Sanity 7215 fullBandConnectedTimeIntervalMilli 7216 = mWifiConfigStore.associatedPartialScanPeriodMilli.get(); 7217 } 7218 if (tryFullBandScan) { 7219 lastFullBandConnectedTimeMilli = now_ms; 7220 if (fullBandConnectedTimeIntervalMilli 7221 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7222 // Increase the interval 7223 fullBandConnectedTimeIntervalMilli 7224 = fullBandConnectedTimeIntervalMilli 7225 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 7226 7227 if (DBG) { 7228 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7229 + fullBandConnectedTimeIntervalMilli); 7230 } 7231 } 7232 handleScanRequest( 7233 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7234 } else { 7235 if (!startScanForConfiguration( 7236 currentConfiguration, restrictChannelList)) { 7237 if (DBG) { 7238 loge("WifiStateMachine starting scan, " + 7239 " did not find channels -> full"); 7240 } 7241 lastFullBandConnectedTimeMilli = now_ms; 7242 if (fullBandConnectedTimeIntervalMilli 7243 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7244 // Increase the interval 7245 fullBandConnectedTimeIntervalMilli 7246 = fullBandConnectedTimeIntervalMilli 7247 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 7248 7249 if (DBG) { 7250 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7251 + fullBandConnectedTimeIntervalMilli); 7252 } 7253 } 7254 handleScanRequest( 7255 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7256 } 7257 } 7258 7259 } else { 7260 loge("CMD_START_SCAN : connected mode and no configuration"); 7261 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7262 } 7263 } else { 7264 // Not scan alarm source 7265 return NOT_HANDLED; 7266 } 7267 break; 7268 /* Ignore connection to same network */ 7269 case WifiManager.CONNECT_NETWORK: 7270 int netId = message.arg1; 7271 if (mWifiInfo.getNetworkId() == netId) { 7272 break; 7273 } 7274 return NOT_HANDLED; 7275 /* Ignore */ 7276 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7277 break; 7278 case CMD_RSSI_POLL: 7279 if (message.arg1 == mRssiPollToken) { 7280 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 7281 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 7282 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 7283 if (stats != null) { 7284 // Sanity check the results provided by driver 7285 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 7286 && (stats.rssi_mgmt == 0 7287 || stats.beacon_rx == 0)) { 7288 stats = null; 7289 } 7290 } 7291 // Get Info and continue polling 7292 fetchRssiLinkSpeedAndFrequencyNative(); 7293 calculateWifiScore(stats); 7294 } 7295 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7296 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7297 7298 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 7299 } else { 7300 // Polling has completed 7301 } 7302 break; 7303 case CMD_ENABLE_RSSI_POLL: 7304 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 7305 mEnableRssiPolling = (message.arg1 == 1); 7306 } else { 7307 mEnableRssiPolling = false; 7308 } 7309 mRssiPollToken++; 7310 if (mEnableRssiPolling) { 7311 // First poll 7312 fetchRssiLinkSpeedAndFrequencyNative(); 7313 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7314 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7315 } else { 7316 cleanWifiScore(); 7317 } 7318 break; 7319 case WifiManager.RSSI_PKTCNT_FETCH: 7320 RssiPacketCountInfo info = new RssiPacketCountInfo(); 7321 fetchRssiLinkSpeedAndFrequencyNative(); 7322 info.rssi = mWifiInfo.getRssi(); 7323 fetchPktcntNative(info); 7324 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 7325 break; 7326 case CMD_DELAYED_NETWORK_DISCONNECT: 7327 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 7328 7329 // Ignore if we are not debouncing 7330 loge("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 7331 + message.arg1); 7332 return HANDLED; 7333 } else { 7334 loge("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 7335 + message.arg1); 7336 7337 linkDebouncing = false; 7338 // If we are still debouncing while this message comes, 7339 // it means we were not able to reconnect within the alloted time 7340 // = LINK_FLAPPING_DEBOUNCE_MSEC 7341 // and thus, trigger a real disconnect 7342 handleNetworkDisconnect(); 7343 transitionTo(mDisconnectedState); 7344 } 7345 break; 7346 case CMD_ASSOCIATED_BSSID: 7347 if ((String) message.obj == null) { 7348 loge("Associated command w/o BSSID"); 7349 break; 7350 } 7351 mLastBssid = (String) message.obj; 7352 if (mLastBssid != null 7353 && (mWifiInfo.getBSSID() == null 7354 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 7355 mWifiInfo.setBSSID((String) message.obj); 7356 sendNetworkStateChangeBroadcast(mLastBssid); 7357 } 7358 break; 7359 default: 7360 return NOT_HANDLED; 7361 } 7362 7363 return HANDLED; 7364 } 7365 } 7366 7367 class ObtainingIpState extends State { 7368 @Override 7369 public void enter() { 7370 if (DBG) { 7371 String key = ""; 7372 if (getCurrentWifiConfiguration() != null) { 7373 key = getCurrentWifiConfiguration().configKey(); 7374 } 7375 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 7376 + " " + key + " " 7377 + " roam=" + mAutoRoaming 7378 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 7379 + " watchdog= " + obtainingIpWatchdogCount); 7380 } 7381 7382 // Reset link Debouncing, indicating we have successfully re-connected to the AP 7383 // We might still be roaming 7384 linkDebouncing = false; 7385 7386 // Send event to CM & network change broadcast 7387 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 7388 7389 // We must clear the config BSSID, as the wifi chipset may decide to roam 7390 // from this point on and having the BSSID specified in the network block would 7391 // cause the roam to faile and the device to disconnect 7392 clearCurrentConfigBSSID("ObtainingIpAddress"); 7393 7394 try { 7395 mNwService.enableIpv6(mInterfaceName); 7396 } catch (RemoteException re) { 7397 loge("Failed to enable IPv6: " + re); 7398 } catch (IllegalStateException e) { 7399 loge("Failed to enable IPv6: " + e); 7400 } 7401 7402 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 7403 if (isRoaming()) { 7404 renewDhcp(); 7405 } else { 7406 // Remove any IP address on the interface in case we're switching from static 7407 // IP configuration to DHCP. This is safe because if we get here when not 7408 // roaming, we don't have a usable address. 7409 clearIPv4Address(mInterfaceName); 7410 startDhcp(); 7411 } 7412 obtainingIpWatchdogCount++; 7413 loge("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 7414 // Get Link layer stats so as we get fresh tx packet counters 7415 getWifiLinkLayerStats(true); 7416 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 7417 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 7418 } else { 7419 // stop any running dhcp before assigning static IP 7420 stopDhcp(); 7421 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 7422 mLastNetworkId); 7423 if (config.ipAddress == null) { 7424 loge("Static IP lacks address"); 7425 sendMessage(CMD_STATIC_IP_FAILURE); 7426 } else { 7427 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 7428 ifcg.setLinkAddress(config.ipAddress); 7429 ifcg.setInterfaceUp(); 7430 try { 7431 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 7432 if (DBG) log("Static IP configuration succeeded"); 7433 DhcpResults dhcpResults = new DhcpResults(config); 7434 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 7435 } catch (RemoteException re) { 7436 loge("Static IP configuration failed: " + re); 7437 sendMessage(CMD_STATIC_IP_FAILURE); 7438 } catch (IllegalStateException e) { 7439 loge("Static IP configuration failed: " + e); 7440 sendMessage(CMD_STATIC_IP_FAILURE); 7441 } 7442 } 7443 } 7444 } 7445 @Override 7446 public boolean processMessage(Message message) { 7447 logStateAndMessage(message, getClass().getSimpleName()); 7448 7449 switch(message.what) { 7450 case CMD_STATIC_IP_SUCCESS: 7451 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 7452 break; 7453 case CMD_STATIC_IP_FAILURE: 7454 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 7455 break; 7456 case CMD_AUTO_CONNECT: 7457 case CMD_AUTO_ROAM: 7458 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7459 break; 7460 case WifiManager.SAVE_NETWORK: 7461 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7462 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7463 deferMessage(message); 7464 break; 7465 /* Defer any power mode changes since we must keep active power mode at DHCP */ 7466 case CMD_SET_HIGH_PERF_MODE: 7467 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7468 deferMessage(message); 7469 break; 7470 /* Defer scan request since we should not switch to other channels at DHCP */ 7471 case CMD_START_SCAN: 7472 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7473 deferMessage(message); 7474 break; 7475 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 7476 if (message.arg1 == obtainingIpWatchdogCount) { 7477 loge("ObtainingIpAddress: Watchdog Triggered, count=" 7478 + obtainingIpWatchdogCount); 7479 handleIpConfigurationLost(); 7480 transitionTo(mDisconnectingState); 7481 break; 7482 } 7483 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7484 break; 7485 default: 7486 return NOT_HANDLED; 7487 } 7488 return HANDLED; 7489 } 7490 } 7491 7492 class VerifyingLinkState extends State { 7493 @Override 7494 public void enter() { 7495 log(getName() + " enter"); 7496 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 7497 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 7498 sendNetworkStateChangeBroadcast(mLastBssid); 7499 // End roaming 7500 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7501 } 7502 @Override 7503 public boolean processMessage(Message message) { 7504 logStateAndMessage(message, getClass().getSimpleName()); 7505 7506 switch (message.what) { 7507 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7508 // Stay here 7509 log(getName() + " POOR_LINK_DETECTED: no transition"); 7510 break; 7511 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 7512 log(getName() + " GOOD_LINK_DETECTED: transition to captive portal check"); 7513 7514 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 7515 sendConnectedState(); 7516 transitionTo(mConnectedState); 7517 break; 7518 default: 7519 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 7520 return NOT_HANDLED; 7521 } 7522 return HANDLED; 7523 } 7524 } 7525 7526 private void sendConnectedState() { 7527 // Send out a broadcast with the CAPTIVE_PORTAL_CHECK to preserve 7528 // existing behaviour. The captive portal check really happens after we 7529 // transition into DetailedState.CONNECTED. 7530 setNetworkDetailedState(DetailedState.CAPTIVE_PORTAL_CHECK); 7531 mWifiConfigStore.updateStatus(mLastNetworkId, 7532 DetailedState.CAPTIVE_PORTAL_CHECK); 7533 sendNetworkStateChangeBroadcast(mLastBssid); 7534 7535 if (mWifiConfigStore.getLastSelectedConfiguration() != null) { 7536 if (mNetworkAgent != null) mNetworkAgent.explicitlySelected(); 7537 } 7538 7539 setNetworkDetailedState(DetailedState.CONNECTED); 7540 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 7541 sendNetworkStateChangeBroadcast(mLastBssid); 7542 } 7543 7544 class RoamingState extends State { 7545 boolean mAssociated; 7546 @Override 7547 public void enter() { 7548 if (DBG) { 7549 log("RoamingState Enter" 7550 + " mScreenOn=" + mScreenOn ); 7551 } 7552 setScanAlarm(false); 7553 7554 // Make sure we disconnect if roaming fails 7555 roamWatchdogCount++; 7556 loge("Start Roam Watchdog " + roamWatchdogCount); 7557 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 7558 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 7559 mAssociated = false; 7560 } 7561 @Override 7562 public boolean processMessage(Message message) { 7563 logStateAndMessage(message, getClass().getSimpleName()); 7564 7565 switch (message.what) { 7566 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7567 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 7568 return HANDLED; 7569 case CMD_UNWANTED_NETWORK: 7570 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 7571 return HANDLED; 7572 case CMD_SET_OPERATIONAL_MODE: 7573 if (message.arg1 != CONNECT_MODE) { 7574 deferMessage(message); 7575 } 7576 break; 7577 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7578 /** 7579 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 7580 * before NETWORK_DISCONNECTION_EVENT 7581 * And there is an associated BSSID corresponding to our target BSSID, then 7582 * we have missed the network disconnection, transition to mDisconnectedState 7583 * and handle the rest of the events there. 7584 */ 7585 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 7586 if (stateChangeResult.state == SupplicantState.DISCONNECTED 7587 || stateChangeResult.state == SupplicantState.INACTIVE 7588 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 7589 if (DBG) { 7590 log("STATE_CHANGE_EVENT in roaming state " 7591 + stateChangeResult.toString() ); 7592 } 7593 if (stateChangeResult.BSSID != null 7594 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 7595 handleNetworkDisconnect(); 7596 transitionTo(mDisconnectedState); 7597 } 7598 } 7599 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 7600 // We completed the layer2 roaming part 7601 mAssociated = true; 7602 if (stateChangeResult.BSSID != null) { 7603 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 7604 } 7605 } 7606 break; 7607 case CMD_ROAM_WATCHDOG_TIMER: 7608 if (roamWatchdogCount == message.arg1) { 7609 if (DBG) log("roaming watchdog! -> disconnect"); 7610 mRoamFailCount++; 7611 handleNetworkDisconnect(); 7612 mWifiNative.disconnect(); 7613 transitionTo(mDisconnectedState); 7614 } 7615 break; 7616 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7617 if (mAssociated) { 7618 if (DBG) log("roaming and Network connection established"); 7619 mLastNetworkId = message.arg1; 7620 mLastBssid = (String) message.obj; 7621 mWifiInfo.setBSSID(mLastBssid); 7622 mWifiInfo.setNetworkId(mLastNetworkId); 7623 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 7624 sendNetworkStateChangeBroadcast(mLastBssid); 7625 transitionTo(mObtainingIpState); 7626 } else { 7627 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7628 } 7629 break; 7630 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7631 // Throw away but only if it corresponds to the network we're roaming to 7632 String bssid = (String)message.obj; 7633 if (true) { 7634 String target = ""; 7635 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 7636 log("NETWORK_DISCONNECTION_EVENT in roaming state" 7637 + " BSSID=" + bssid 7638 + " target=" + target); 7639 } 7640 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 7641 handleNetworkDisconnect(); 7642 transitionTo(mDisconnectedState); 7643 } 7644 break; 7645 case WifiMonitor.SSID_TEMP_DISABLED: 7646 // Auth error while roaming 7647 loge("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 7648 + " id=" + Integer.toString(message.arg1) 7649 + " isRoaming=" + isRoaming() 7650 + " roam=" + Integer.toString(mAutoRoaming)); 7651 if (message.arg1 == mLastNetworkId) { 7652 handleNetworkDisconnect(); 7653 transitionTo(mDisconnectingState); 7654 } 7655 return NOT_HANDLED; 7656 case CMD_START_SCAN: 7657 deferMessage(message); 7658 break; 7659 default: 7660 return NOT_HANDLED; 7661 } 7662 return HANDLED; 7663 } 7664 7665 @Override 7666 public void exit() { 7667 loge("WifiStateMachine: Leaving Roaming state"); 7668 } 7669 } 7670 7671 class ConnectedState extends State { 7672 @Override 7673 public void enter() { 7674 String address; 7675 updateDefaultRouteMacAddress(1000); 7676 if (DBG) { 7677 log("ConnectedState Enter " 7678 + " mScreenOn=" + mScreenOn 7679 + " scanperiod=" 7680 + Integer.toString(mWifiConfigStore.associatedPartialScanPeriodMilli.get()) ); 7681 } 7682 if (mScreenOn 7683 && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 7684 // restart scan alarm 7685 startDelayedScan(mWifiConfigStore.associatedPartialScanPeriodMilli.get(), null, null); 7686 } 7687 registerConnected(); 7688 lastConnectAttempt = 0; 7689 targetWificonfiguration = null; 7690 // Paranoia 7691 linkDebouncing = false; 7692 7693 // Not roaming anymore 7694 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7695 7696 if (testNetworkDisconnect) { 7697 testNetworkDisconnectCounter++; 7698 loge("ConnectedState Enter start disconnect test " + 7699 testNetworkDisconnectCounter); 7700 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 7701 testNetworkDisconnectCounter, 0), 15000); 7702 } 7703 7704 // Reenable all networks, allow for hidden networks to be scanned 7705 mWifiConfigStore.enableAllNetworks(); 7706 7707 mLastDriverRoamAttempt = 0; 7708 } 7709 @Override 7710 public boolean processMessage(Message message) { 7711 WifiConfiguration config = null; 7712 logStateAndMessage(message, getClass().getSimpleName()); 7713 7714 switch (message.what) { 7715 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7716 if (DBG) log("Watchdog reports poor link"); 7717 transitionTo(mVerifyingLinkState); 7718 break; 7719 case CMD_UNWANTED_NETWORK: 7720 if (message.arg1 == network_status_unwanted_disconnect) { 7721 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 7722 mWifiNative.disconnect(); 7723 transitionTo(mDisconnectingState); 7724 } else if (message.arg1 == network_status_unwanted_disable_autojoin) { 7725 config = getCurrentWifiConfiguration(); 7726 if (config != null) { 7727 // Disable autojoin 7728 config.numNoInternetAccessReports += 1; 7729 } 7730 } 7731 return HANDLED; 7732 case CMD_NETWORK_STATUS: 7733 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 7734 config = getCurrentWifiConfiguration(); 7735 if (config != null) { 7736 // re-enable autojoin 7737 config.numNoInternetAccessReports = 0; 7738 config.validatedInternetAccess = true; 7739 } 7740 } 7741 return HANDLED; 7742 case CMD_TEST_NETWORK_DISCONNECT: 7743 // Force a disconnect 7744 if (message.arg1 == testNetworkDisconnectCounter) { 7745 mWifiNative.disconnect(); 7746 } 7747 break; 7748 case CMD_ASSOCIATED_BSSID: 7749 // ASSOCIATING to a new BSSID while already connected, indicates 7750 // that driver is roaming 7751 mLastDriverRoamAttempt = System.currentTimeMillis(); 7752 String toBSSID = (String)message.obj; 7753 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 7754 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 7755 } 7756 return NOT_HANDLED; 7757 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7758 long lastRoam = 0; 7759 if (mLastDriverRoamAttempt != 0) { 7760 // Calculate time since last driver roam attempt 7761 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 7762 mLastDriverRoamAttempt = 0; 7763 } 7764 config = getCurrentWifiConfiguration(); 7765 if (mScreenOn 7766 && !linkDebouncing 7767 && config != null 7768 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 7769 && !mWifiConfigStore.isLastSelectedConfiguration(config) 7770 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 7771 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 7772 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 7773 && mWifiInfo.getRssi() > 7774 WifiConfiguration.BAD_RSSI_24) 7775 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 7776 && mWifiInfo.getRssi() > 7777 WifiConfiguration.BAD_RSSI_5))) { 7778 // Start de-bouncing the L2 disconnection: 7779 // this L2 disconnection might be spurious. 7780 // Hence we allow 7 seconds for the state machine to try 7781 // to reconnect, go thru the 7782 // roaming cycle and enter Obtaining IP address 7783 // before signalling the disconnect to ConnectivityService and L3 7784 startScanForConfiguration(getCurrentWifiConfiguration(), false); 7785 linkDebouncing = true; 7786 7787 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 7788 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 7789 if (DBG) { 7790 log("NETWORK_DISCONNECTION_EVENT in connected state" 7791 + " BSSID=" + mWifiInfo.getBSSID() 7792 + " RSSI=" + mWifiInfo.getRssi() 7793 + " freq=" + mWifiInfo.getFrequency() 7794 + " reason=" + message.arg2 7795 + " -> debounce"); 7796 } 7797 return HANDLED; 7798 } else { 7799 if (DBG) { 7800 int ajst = -1; 7801 if (config != null) ajst = config.autoJoinStatus; 7802 log("NETWORK_DISCONNECTION_EVENT in connected state" 7803 + " BSSID=" + mWifiInfo.getBSSID() 7804 + " RSSI=" + mWifiInfo.getRssi() 7805 + " freq=" + mWifiInfo.getFrequency() 7806 + " was debouncing=" + linkDebouncing 7807 + " reason=" + message.arg2 7808 + " ajst=" + ajst); 7809 } 7810 } 7811 break; 7812 case CMD_AUTO_ROAM: 7813 // Clear the driver roam indication since we are attempting a framerwork roam 7814 mLastDriverRoamAttempt = 0; 7815 7816 /* Connect command coming from auto-join */ 7817 ScanResult candidate = (ScanResult)message.obj; 7818 String bssid = "any"; 7819 if (candidate != null && candidate.is5GHz()) { 7820 // Only lock BSSID for 5GHz networks 7821 bssid = candidate.BSSID; 7822 } 7823 int netId = mLastNetworkId; 7824 config = getCurrentWifiConfiguration(); 7825 7826 7827 if (config == null) { 7828 loge("AUTO_ROAM and no config, bail out..."); 7829 break; 7830 } 7831 7832 loge("CMD_AUTO_ROAM sup state " 7833 + mSupplicantStateTracker.getSupplicantStateName() 7834 + " my state " + getCurrentState().getName() 7835 + " nid=" + Integer.toString(netId) 7836 + " config " + config.configKey() 7837 + " roam=" + Integer.toString(message.arg2) 7838 + " to " + bssid 7839 + " targetRoamBSSID " + mTargetRoamBSSID); 7840 7841 /* Save the BSSID so as to lock it @ firmware */ 7842 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 7843 loge("AUTO_ROAM nothing to do"); 7844 // Same BSSID, nothing to do 7845 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7846 break; 7847 }; 7848 7849 // Make sure the network is enabled, since supplicant will not reenable it 7850 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7851 7852 boolean ret = false; 7853 if (mLastNetworkId != netId) { 7854 if (mWifiConfigStore.selectNetwork(netId) && 7855 mWifiNative.reconnect()) { 7856 ret = true; 7857 } 7858 } else { 7859 ret = mWifiNative.reassociate(); 7860 } 7861 if (ret) { 7862 lastConnectAttempt = System.currentTimeMillis(); 7863 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7864 7865 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7866 mAutoRoaming = message.arg2; 7867 transitionTo(mRoamingState); 7868 7869 } else { 7870 loge("Failed to connect config: " + config + " netId: " + netId); 7871 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7872 WifiManager.ERROR); 7873 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7874 break; 7875 } 7876 break; 7877 default: 7878 return NOT_HANDLED; 7879 } 7880 return HANDLED; 7881 } 7882 7883 @Override 7884 public void exit() { 7885 loge("WifiStateMachine: Leaving Connected state"); 7886 setScanAlarm(false); 7887 mLastDriverRoamAttempt = 0; 7888 } 7889 } 7890 7891 class DisconnectingState extends State { 7892 7893 @Override 7894 public void enter() { 7895 7896 if (PDBG) { 7897 loge(" Enter DisconnectingState State scan interval " + mFrameworkScanIntervalMs 7898 + " mEnableBackgroundScan= " + mEnableBackgroundScan 7899 + " screenOn=" + mScreenOn); 7900 } 7901 7902 // Make sure we disconnect: we enter this state prior connecting to a new 7903 // network, waiting for either a DISCONECT event or a SUPPLICANT_STATE_CHANGE 7904 // event which in this case will be indicating that supplicant started to associate. 7905 // In some cases supplicant doesn't ignore the connect requests (it might not 7906 // find the target SSID in its cache), 7907 // Therefore we end up stuck that state, hence the need for the watchdog. 7908 disconnectingWatchdogCount++; 7909 loge("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 7910 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 7911 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 7912 } 7913 7914 @Override 7915 public boolean processMessage(Message message) { 7916 logStateAndMessage(message, getClass().getSimpleName()); 7917 switch (message.what) { 7918 case CMD_SET_OPERATIONAL_MODE: 7919 if (message.arg1 != CONNECT_MODE) { 7920 deferMessage(message); 7921 } 7922 break; 7923 case CMD_START_SCAN: 7924 deferMessage(message); 7925 return HANDLED; 7926 case CMD_DISCONNECTING_WATCHDOG_TIMER: 7927 if (disconnectingWatchdogCount == message.arg1) { 7928 if (DBG) log("disconnecting watchdog! -> disconnect"); 7929 handleNetworkDisconnect(); 7930 transitionTo(mDisconnectedState); 7931 } 7932 break; 7933 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7934 /** 7935 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 7936 * we have missed the network disconnection, transition to mDisconnectedState 7937 * and handle the rest of the events there 7938 */ 7939 deferMessage(message); 7940 handleNetworkDisconnect(); 7941 transitionTo(mDisconnectedState); 7942 break; 7943 default: 7944 return NOT_HANDLED; 7945 } 7946 return HANDLED; 7947 } 7948 } 7949 7950 class DisconnectedState extends State { 7951 @Override 7952 public void enter() { 7953 // We dont scan frequently if this is a temporary disconnect 7954 // due to p2p 7955 if (mTemporarilyDisconnectWifi) { 7956 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 7957 return; 7958 } 7959 7960 mFrameworkScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 7961 Settings.Global.WIFI_FRAMEWORK_SCAN_INTERVAL_MS, 7962 mDefaultFrameworkScanIntervalMs); 7963 7964 if (PDBG) { 7965 loge(" Enter disconnected State scan interval " + mFrameworkScanIntervalMs 7966 + " mEnableBackgroundScan= " + mEnableBackgroundScan 7967 + " screenOn=" + mScreenOn 7968 + " mFrameworkScanIntervalMs=" + mFrameworkScanIntervalMs); 7969 } 7970 7971 /** clear the roaming state, if we were roaming, we failed */ 7972 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7973 7974 if (mScreenOn) { 7975 /** 7976 * screen lit and => delayed timer 7977 */ 7978 startDelayedScan(mDisconnectedScanPeriodMs, null, null); 7979 } else { 7980 /** 7981 * screen dark and PNO supported => scan alarm disabled 7982 */ 7983 if (mEnableBackgroundScan) { 7984 /* If a regular scan result is pending, do not initiate background 7985 * scan until the scan results are returned. This is needed because 7986 * initiating a background scan will cancel the regular scan and 7987 * scan results will not be returned until background scanning is 7988 * cleared 7989 */ 7990 if (!mIsScanOngoing) { 7991 enableBackgroundScan(true); 7992 } 7993 } else { 7994 setScanAlarm(true); 7995 } 7996 } 7997 7998 /** 7999 * If we have no networks saved, the supplicant stops doing the periodic scan. 8000 * The scans are useful to notify the user of the presence of an open network. 8001 * Note that these are not wake up scans. 8002 */ 8003 if (!mP2pConnected.get() && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8004 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8005 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8006 } 8007 8008 mDisconnectedTimeStamp = System.currentTimeMillis(); 8009 8010 } 8011 @Override 8012 public boolean processMessage(Message message) { 8013 boolean ret = HANDLED; 8014 8015 logStateAndMessage(message, getClass().getSimpleName()); 8016 8017 switch (message.what) { 8018 case CMD_NO_NETWORKS_PERIODIC_SCAN: 8019 if (mP2pConnected.get()) break; 8020 if (message.arg1 == mPeriodicScanToken && 8021 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8022 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 8023 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8024 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8025 } 8026 break; 8027 case WifiManager.FORGET_NETWORK: 8028 case CMD_REMOVE_NETWORK: 8029 // Set up a delayed message here. After the forget/remove is handled 8030 // the handled delayed message will determine if there is a need to 8031 // scan and continue 8032 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8033 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8034 ret = NOT_HANDLED; 8035 break; 8036 case CMD_SET_OPERATIONAL_MODE: 8037 if (message.arg1 != CONNECT_MODE) { 8038 mOperationalMode = message.arg1; 8039 8040 mWifiConfigStore.disableAllNetworks(); 8041 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8042 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 8043 setWifiState(WIFI_STATE_DISABLED); 8044 } 8045 8046 transitionTo(mScanModeState); 8047 } 8048 break; 8049 /* Ignore network disconnect */ 8050 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8051 break; 8052 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8053 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8054 if (DBG) { 8055 loge("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 8056 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 8057 + " debouncing=" + linkDebouncing); 8058 } 8059 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 8060 /* ConnectModeState does the rest of the handling */ 8061 ret = NOT_HANDLED; 8062 break; 8063 case CMD_START_SCAN: 8064 if (!checkOrDeferScanAllowed(message)) { 8065 // The scan request was rescheduled 8066 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8067 return HANDLED; 8068 } 8069 /* Disable background scan temporarily during a regular scan */ 8070 if (mEnableBackgroundScan) { 8071 enableBackgroundScan(false); 8072 } 8073 if (message.arg1 == SCAN_ALARM_SOURCE) { 8074 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8075 // not be processed) and restart the scan 8076 int period = mDisconnectedScanPeriodMs; 8077 if (mP2pConnected.get()) { 8078 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 8079 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8080 mDisconnectedScanPeriodMs); 8081 } 8082 if (!checkAndRestartDelayedScan(message.arg2, 8083 true, period, null, null)) { 8084 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8085 loge("WifiStateMachine Disconnected CMD_START_SCAN source " 8086 + message.arg1 8087 + " " + message.arg2 + ", " + mDelayedScanCounter 8088 + " -> obsolete"); 8089 return HANDLED; 8090 } 8091 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8092 ret = HANDLED; 8093 } else { 8094 ret = NOT_HANDLED; 8095 } 8096 break; 8097 case WifiMonitor.SCAN_RESULTS_EVENT: 8098 /* Re-enable background scan when a pending scan result is received */ 8099 if (mEnableBackgroundScan && mIsScanOngoing) { 8100 enableBackgroundScan(true); 8101 } 8102 /* Handled in parent state */ 8103 ret = NOT_HANDLED; 8104 break; 8105 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 8106 NetworkInfo info = (NetworkInfo) message.obj; 8107 mP2pConnected.set(info.isConnected()); 8108 if (mP2pConnected.get()) { 8109 int defaultInterval = mContext.getResources().getInteger( 8110 R.integer.config_wifi_scan_interval_p2p_connected); 8111 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 8112 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8113 defaultInterval); 8114 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 8115 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8116 if (DBG) log("Turn on scanning after p2p disconnected"); 8117 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8118 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8119 } else { 8120 // If P2P is not connected and there are saved networks, then restart 8121 // scanning at the normal period. This is necessary because scanning might 8122 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 8123 // was set to zero. 8124 startDelayedScan(mDisconnectedScanPeriodMs, null, null); 8125 } 8126 break; 8127 case CMD_RECONNECT: 8128 case CMD_REASSOCIATE: 8129 if (mTemporarilyDisconnectWifi) { 8130 // Drop a third party reconnect/reassociate if STA is 8131 // temporarily disconnected for p2p 8132 break; 8133 } else { 8134 // ConnectModeState handles it 8135 ret = NOT_HANDLED; 8136 } 8137 break; 8138 case CMD_SCREEN_STATE_CHANGED: 8139 handleScreenStateChanged(message.arg1 != 0, 8140 /* startBackgroundScanIfNeeded = */ true); 8141 break; 8142 default: 8143 ret = NOT_HANDLED; 8144 } 8145 return ret; 8146 } 8147 8148 @Override 8149 public void exit() { 8150 /* No need for a background scan upon exit from a disconnected state */ 8151 if (mEnableBackgroundScan) { 8152 enableBackgroundScan(false); 8153 } 8154 setScanAlarm(false); 8155 } 8156 } 8157 8158 class WpsRunningState extends State { 8159 // Tracks the source to provide a reply 8160 private Message mSourceMessage; 8161 @Override 8162 public void enter() { 8163 mSourceMessage = Message.obtain(getCurrentMessage()); 8164 } 8165 @Override 8166 public boolean processMessage(Message message) { 8167 logStateAndMessage(message, getClass().getSimpleName()); 8168 8169 switch (message.what) { 8170 case WifiMonitor.WPS_SUCCESS_EVENT: 8171 // Ignore intermediate success, wait for full connection 8172 break; 8173 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8174 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 8175 mSourceMessage.recycle(); 8176 mSourceMessage = null; 8177 deferMessage(message); 8178 transitionTo(mDisconnectedState); 8179 break; 8180 case WifiMonitor.WPS_OVERLAP_EVENT: 8181 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8182 WifiManager.WPS_OVERLAP_ERROR); 8183 mSourceMessage.recycle(); 8184 mSourceMessage = null; 8185 transitionTo(mDisconnectedState); 8186 break; 8187 case WifiMonitor.WPS_FAIL_EVENT: 8188 // Arg1 has the reason for the failure 8189 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 8190 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 8191 mSourceMessage.recycle(); 8192 mSourceMessage = null; 8193 transitionTo(mDisconnectedState); 8194 } else { 8195 if (DBG) log("Ignore unspecified fail event during WPS connection"); 8196 } 8197 break; 8198 case WifiMonitor.WPS_TIMEOUT_EVENT: 8199 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8200 WifiManager.WPS_TIMED_OUT); 8201 mSourceMessage.recycle(); 8202 mSourceMessage = null; 8203 transitionTo(mDisconnectedState); 8204 break; 8205 case WifiManager.START_WPS: 8206 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 8207 break; 8208 case WifiManager.CANCEL_WPS: 8209 if (mWifiNative.cancelWps()) { 8210 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 8211 } else { 8212 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 8213 } 8214 transitionTo(mDisconnectedState); 8215 break; 8216 /** 8217 * Defer all commands that can cause connections to a different network 8218 * or put the state machine out of connect mode 8219 */ 8220 case CMD_STOP_DRIVER: 8221 case CMD_SET_OPERATIONAL_MODE: 8222 case WifiManager.CONNECT_NETWORK: 8223 case CMD_ENABLE_NETWORK: 8224 case CMD_RECONNECT: 8225 case CMD_REASSOCIATE: 8226 deferMessage(message); 8227 break; 8228 case CMD_AUTO_CONNECT: 8229 case CMD_AUTO_ROAM: 8230 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8231 return HANDLED; 8232 case CMD_START_SCAN: 8233 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8234 return HANDLED; 8235 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8236 if (DBG) log("Network connection lost"); 8237 handleNetworkDisconnect(); 8238 break; 8239 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 8240 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 8241 break; 8242 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 8243 // Disregard auth failure events during WPS connection. The 8244 // EAP sequence is retried several times, and there might be 8245 // failures (especially for wps pin). We will get a WPS_XXX 8246 // event at the end of the sequence anyway. 8247 if (DBG) log("Ignore auth failure during WPS connection"); 8248 break; 8249 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8250 // Throw away supplicant state changes when WPS is running. 8251 // We will start getting supplicant state changes once we get 8252 // a WPS success or failure 8253 break; 8254 default: 8255 return NOT_HANDLED; 8256 } 8257 return HANDLED; 8258 } 8259 8260 @Override 8261 public void exit() { 8262 mWifiConfigStore.enableAllNetworks(); 8263 mWifiConfigStore.loadConfiguredNetworks(); 8264 } 8265 } 8266 8267 class SoftApStartingState extends State { 8268 @Override 8269 public void enter() { 8270 final Message message = getCurrentMessage(); 8271 if (message.what == CMD_START_AP) { 8272 final WifiConfiguration config = (WifiConfiguration) message.obj; 8273 8274 if (config == null) { 8275 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 8276 } else { 8277 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 8278 startSoftApWithConfig(config); 8279 } 8280 } else { 8281 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 8282 } 8283 } 8284 @Override 8285 public boolean processMessage(Message message) { 8286 logStateAndMessage(message, getClass().getSimpleName()); 8287 8288 switch(message.what) { 8289 case CMD_START_SUPPLICANT: 8290 case CMD_STOP_SUPPLICANT: 8291 case CMD_START_AP: 8292 case CMD_STOP_AP: 8293 case CMD_START_DRIVER: 8294 case CMD_STOP_DRIVER: 8295 case CMD_SET_OPERATIONAL_MODE: 8296 case CMD_SET_COUNTRY_CODE: 8297 case CMD_SET_FREQUENCY_BAND: 8298 case CMD_START_PACKET_FILTERING: 8299 case CMD_STOP_PACKET_FILTERING: 8300 case CMD_TETHER_STATE_CHANGE: 8301 deferMessage(message); 8302 break; 8303 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 8304 WifiConfiguration config = (WifiConfiguration) message.obj; 8305 if (config != null) { 8306 startSoftApWithConfig(config); 8307 } else { 8308 loge("Softap config is null!"); 8309 sendMessage(CMD_START_AP_FAILURE); 8310 } 8311 break; 8312 case CMD_START_AP_SUCCESS: 8313 setWifiApState(WIFI_AP_STATE_ENABLED); 8314 transitionTo(mSoftApStartedState); 8315 break; 8316 case CMD_START_AP_FAILURE: 8317 setWifiApState(WIFI_AP_STATE_FAILED); 8318 transitionTo(mInitialState); 8319 break; 8320 default: 8321 return NOT_HANDLED; 8322 } 8323 return HANDLED; 8324 } 8325 } 8326 8327 class SoftApStartedState extends State { 8328 @Override 8329 public boolean processMessage(Message message) { 8330 logStateAndMessage(message, getClass().getSimpleName()); 8331 8332 switch(message.what) { 8333 case CMD_STOP_AP: 8334 if (DBG) log("Stopping Soft AP"); 8335 /* We have not tethered at this point, so we just shutdown soft Ap */ 8336 try { 8337 mNwService.stopAccessPoint(mInterfaceName); 8338 } catch(Exception e) { 8339 loge("Exception in stopAccessPoint()"); 8340 } 8341 setWifiApState(WIFI_AP_STATE_DISABLED); 8342 transitionTo(mInitialState); 8343 break; 8344 case CMD_START_AP: 8345 // Ignore a start on a running access point 8346 break; 8347 // Fail client mode operation when soft AP is enabled 8348 case CMD_START_SUPPLICANT: 8349 loge("Cannot start supplicant with a running soft AP"); 8350 setWifiState(WIFI_STATE_UNKNOWN); 8351 break; 8352 case CMD_TETHER_STATE_CHANGE: 8353 TetherStateChange stateChange = (TetherStateChange) message.obj; 8354 if (startTethering(stateChange.available)) { 8355 transitionTo(mTetheringState); 8356 } 8357 break; 8358 default: 8359 return NOT_HANDLED; 8360 } 8361 return HANDLED; 8362 } 8363 } 8364 8365 class TetheringState extends State { 8366 @Override 8367 public void enter() { 8368 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8369 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8370 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8371 } 8372 @Override 8373 public boolean processMessage(Message message) { 8374 logStateAndMessage(message, getClass().getSimpleName()); 8375 8376 switch(message.what) { 8377 case CMD_TETHER_STATE_CHANGE: 8378 TetherStateChange stateChange = (TetherStateChange) message.obj; 8379 if (isWifiTethered(stateChange.active)) { 8380 transitionTo(mTetheredState); 8381 } 8382 return HANDLED; 8383 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8384 if (message.arg1 == mTetherToken) { 8385 loge("Failed to get tether update, shutdown soft access point"); 8386 transitionTo(mSoftApStartedState); 8387 // Needs to be first thing handled 8388 sendMessageAtFrontOfQueue(CMD_STOP_AP); 8389 } 8390 break; 8391 case CMD_START_SUPPLICANT: 8392 case CMD_STOP_SUPPLICANT: 8393 case CMD_START_AP: 8394 case CMD_STOP_AP: 8395 case CMD_START_DRIVER: 8396 case CMD_STOP_DRIVER: 8397 case CMD_SET_OPERATIONAL_MODE: 8398 case CMD_SET_COUNTRY_CODE: 8399 case CMD_SET_FREQUENCY_BAND: 8400 case CMD_START_PACKET_FILTERING: 8401 case CMD_STOP_PACKET_FILTERING: 8402 deferMessage(message); 8403 break; 8404 default: 8405 return NOT_HANDLED; 8406 } 8407 return HANDLED; 8408 } 8409 } 8410 8411 class TetheredState extends State { 8412 @Override 8413 public boolean processMessage(Message message) { 8414 logStateAndMessage(message, getClass().getSimpleName()); 8415 8416 switch(message.what) { 8417 case CMD_TETHER_STATE_CHANGE: 8418 TetherStateChange stateChange = (TetherStateChange) message.obj; 8419 if (!isWifiTethered(stateChange.active)) { 8420 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 8421 setHostApRunning(null, false); 8422 setHostApRunning(null, true); 8423 } 8424 return HANDLED; 8425 case CMD_STOP_AP: 8426 if (DBG) log("Untethering before stopping AP"); 8427 setWifiApState(WIFI_AP_STATE_DISABLING); 8428 stopTethering(); 8429 transitionTo(mUntetheringState); 8430 // More work to do after untethering 8431 deferMessage(message); 8432 break; 8433 default: 8434 return NOT_HANDLED; 8435 } 8436 return HANDLED; 8437 } 8438 } 8439 8440 class UntetheringState extends State { 8441 @Override 8442 public void enter() { 8443 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8444 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8445 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8446 8447 } 8448 @Override 8449 public boolean processMessage(Message message) { 8450 logStateAndMessage(message, getClass().getSimpleName()); 8451 8452 switch(message.what) { 8453 case CMD_TETHER_STATE_CHANGE: 8454 TetherStateChange stateChange = (TetherStateChange) message.obj; 8455 8456 /* Wait till wifi is untethered */ 8457 if (isWifiTethered(stateChange.active)) break; 8458 8459 transitionTo(mSoftApStartedState); 8460 break; 8461 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8462 if (message.arg1 == mTetherToken) { 8463 loge("Failed to get tether update, force stop access point"); 8464 transitionTo(mSoftApStartedState); 8465 } 8466 break; 8467 case CMD_START_SUPPLICANT: 8468 case CMD_STOP_SUPPLICANT: 8469 case CMD_START_AP: 8470 case CMD_STOP_AP: 8471 case CMD_START_DRIVER: 8472 case CMD_STOP_DRIVER: 8473 case CMD_SET_OPERATIONAL_MODE: 8474 case CMD_SET_COUNTRY_CODE: 8475 case CMD_SET_FREQUENCY_BAND: 8476 case CMD_START_PACKET_FILTERING: 8477 case CMD_STOP_PACKET_FILTERING: 8478 deferMessage(message); 8479 break; 8480 default: 8481 return NOT_HANDLED; 8482 } 8483 return HANDLED; 8484 } 8485 } 8486 8487 //State machine initiated requests can have replyTo set to null indicating 8488 //there are no recepients, we ignore those reply actions 8489 private void replyToMessage(Message msg, int what) { 8490 if (msg.replyTo == null) return; 8491 Message dstMsg = obtainMessageWithArg2(msg); 8492 dstMsg.what = what; 8493 mReplyChannel.replyToMessage(msg, dstMsg); 8494 } 8495 8496 private void replyToMessage(Message msg, int what, int arg1) { 8497 if (msg.replyTo == null) return; 8498 Message dstMsg = obtainMessageWithArg2(msg); 8499 dstMsg.what = what; 8500 dstMsg.arg1 = arg1; 8501 mReplyChannel.replyToMessage(msg, dstMsg); 8502 } 8503 8504 private void replyToMessage(Message msg, int what, Object obj) { 8505 if (msg.replyTo == null) return; 8506 Message dstMsg = obtainMessageWithArg2(msg); 8507 dstMsg.what = what; 8508 dstMsg.obj = obj; 8509 mReplyChannel.replyToMessage(msg, dstMsg); 8510 } 8511 8512 /** 8513 * arg2 on the source message has a unique id that needs to be retained in replies 8514 * to match the request 8515 8516 * see WifiManager for details 8517 */ 8518 private Message obtainMessageWithArg2(Message srcMsg) { 8519 Message msg = Message.obtain(); 8520 msg.arg2 = srcMsg.arg2; 8521 return msg; 8522 } 8523 8524 private static int parseHex(char ch) { 8525 if ('0' <= ch && ch <= '9') { 8526 return ch - '0'; 8527 } else if ('a' <= ch && ch <= 'f') { 8528 return ch - 'a' + 10; 8529 } else if ('A' <= ch && ch <= 'F') { 8530 return ch - 'A' + 10; 8531 } else { 8532 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 8533 } 8534 } 8535 8536 private byte[] parseHex(String hex) { 8537 /* This only works for good input; don't throw bad data at it */ 8538 if (hex == null) { 8539 return new byte[0]; 8540 } 8541 8542 if (hex.length() % 2 != 0) { 8543 throw new NumberFormatException(hex + " is not a valid hex string"); 8544 } 8545 8546 byte[] result = new byte[(hex.length())/2 + 1]; 8547 result[0] = (byte) ((hex.length())/2); 8548 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 8549 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 8550 byte b = (byte) (val & 0xFF); 8551 result[j] = b; 8552 } 8553 8554 return result; 8555 } 8556 8557 private static String makeHex(byte[] bytes) { 8558 StringBuilder sb = new StringBuilder(); 8559 for (byte b : bytes) { 8560 sb.append(String.format("%02x", b)); 8561 } 8562 return sb.toString(); 8563 } 8564 8565 private static String makeHex(byte[] bytes, int from, int len) { 8566 StringBuilder sb = new StringBuilder(); 8567 for (int i = 0; i < len; i++) { 8568 sb.append(String.format("%02x", bytes[from+i])); 8569 } 8570 return sb.toString(); 8571 } 8572 8573 8574 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 8575 8576 int len = array1.length + array2.length + array3.length; 8577 8578 if (array1.length != 0) { 8579 len++; /* add another byte for size */ 8580 } 8581 8582 if (array2.length != 0) { 8583 len++; /* add another byte for size */ 8584 } 8585 8586 if (array3.length != 0) { 8587 len++; /* add another byte for size */ 8588 } 8589 8590 byte[] result = new byte[len]; 8591 8592 int index = 0; 8593 if (array1.length != 0) { 8594 result[index] = (byte) (array1.length & 0xFF); 8595 index++; 8596 for (byte b : array1) { 8597 result[index] = b; 8598 index++; 8599 } 8600 } 8601 8602 if (array2.length != 0) { 8603 result[index] = (byte) (array2.length & 0xFF); 8604 index++; 8605 for (byte b : array2) { 8606 result[index] = b; 8607 index++; 8608 } 8609 } 8610 8611 if (array3.length != 0) { 8612 result[index] = (byte) (array3.length & 0xFF); 8613 index++; 8614 for (byte b : array3) { 8615 result[index] = b; 8616 index++; 8617 } 8618 } 8619 return result; 8620 } 8621 8622 void handleGsmAuthRequest(SimAuthRequestData requestData) { 8623 if (targetWificonfiguration == null 8624 || targetWificonfiguration.networkId == requestData.networkId) { 8625 logd("id matches targetWifiConfiguration"); 8626 } else { 8627 logd("id does not match targetWifiConfiguration"); 8628 return; 8629 } 8630 8631 TelephonyManager tm = (TelephonyManager) 8632 mContext.getSystemService(Context.TELEPHONY_SERVICE); 8633 8634 if (tm != null) { 8635 StringBuilder sb = new StringBuilder(); 8636 for (String challenge : requestData.challenges) { 8637 8638 logd("RAND = " + challenge); 8639 8640 byte[] rand = null; 8641 try { 8642 rand = parseHex(challenge); 8643 } catch (NumberFormatException e) { 8644 loge("malformed challenge"); 8645 continue; 8646 } 8647 8648 String base64Challenge = android.util.Base64.encodeToString( 8649 rand, android.util.Base64.NO_WRAP); 8650 /* 8651 * appType = 1 => SIM, 2 => USIM according to 8652 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 8653 */ 8654 int appType = 2; 8655 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 8656 logv("Raw Response - " + tmResponse); 8657 8658 if (tmResponse != null && tmResponse.length() > 4) { 8659 byte[] result = android.util.Base64.decode(tmResponse, 8660 android.util.Base64.DEFAULT); 8661 logv("Hex Response -" + makeHex(result)); 8662 int sres_len = result[0]; 8663 String sres = makeHex(result, 1, sres_len); 8664 int kc_offset = 1+sres_len; 8665 int kc_len = result[kc_offset]; 8666 String kc = makeHex(result, 1+kc_offset, kc_len); 8667 sb.append(":" + kc + ":" + sres); 8668 logv("kc:" + kc + " sres:" + sres); 8669 } else { 8670 loge("bad response - " + tmResponse); 8671 } 8672 } 8673 8674 String response = sb.toString(); 8675 logv("Supplicant Response -" + response); 8676 mWifiNative.simAuthResponse(requestData.networkId, response); 8677 } else { 8678 loge("could not get telephony manager"); 8679 } 8680 } 8681 8682 void handle3GAuthRequest(SimAuthRequestData requestData) { 8683 8684 } 8685} 8686