WifiStateMachine.java revision 8242cc81341c80ab5bc057ffdad99a3a1d95be5c
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.p2p.WifiP2pServiceImpl; 108 109import java.io.BufferedReader; 110import java.io.FileDescriptor; 111import java.io.FileNotFoundException; 112import java.io.FileReader; 113import java.io.IOException; 114import java.io.PrintWriter; 115import java.net.Inet4Address; 116import java.net.InetAddress; 117import java.util.ArrayList; 118import java.util.HashSet; 119import java.util.LinkedList; 120import java.util.List; 121import java.util.Locale; 122import java.util.Queue; 123import java.util.concurrent.atomic.AtomicBoolean; 124import java.util.concurrent.atomic.AtomicInteger; 125import java.util.regex.Pattern; 126 127/** 128 * Track the state of Wifi connectivity. All event handling is done here, 129 * and all changes in connectivity state are initiated here. 130 * 131 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 132 * In the current implementation, we support concurrent wifi p2p and wifi operation. 133 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 134 * handles p2p operation. 135 * 136 * @hide 137 */ 138public class WifiStateMachine extends StateMachine { 139 140 private static final String NETWORKTYPE = "WIFI"; 141 private static boolean DBG = false; 142 private static boolean VDBG = false; 143 private static boolean VVDBG = false; 144 private static boolean mLogMessages = false; 145 146 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 147 148 private static final String GOOGLE_OUI = "DA-A1-19"; 149 150 /* temporary debug flag - best network selection development */ 151 private static boolean PDBG = false; 152 153 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 154 * the corresponding BSSID. 155 */ 156 private boolean didBlackListBSSID = false; 157 158 /** 159 * Log with error attribute 160 * 161 * @param s is string log 162 */ 163 protected void loge(String s) { 164 Log.e(getName(), s); 165 } 166 protected void log(String s) {; 167 Log.e(getName(), s); 168 } 169 170 private WifiMonitor mWifiMonitor; 171 private WifiNative mWifiNative; 172 private WifiConfigStore mWifiConfigStore; 173 private WifiAutoJoinController mWifiAutoJoinController; 174 private INetworkManagementService mNwService; 175 private ConnectivityManager mCm; 176 177 private final boolean mP2pSupported; 178 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 179 private boolean mTemporarilyDisconnectWifi = false; 180 private final String mPrimaryDeviceType; 181 182 /* Scan results handling */ 183 private List<ScanResult> mScanResults = new ArrayList<ScanResult>(); 184 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 185 private static final int SCAN_RESULT_CACHE_SIZE = 160; 186 private final LruCache<String, ScanResult> mScanResultCache; 187 // For debug, number of known scan results that were found as part of last scan result event, 188 // as well the number of scans results returned by the supplicant with that message 189 private int mNumScanResultsKnown; 190 private int mNumScanResultsReturned; 191 192 /* Batch scan results */ 193 private final List<BatchedScanResult> mBatchedScanResults = 194 new ArrayList<BatchedScanResult>(); 195 private int mBatchedScanOwnerUid = UNKNOWN_SCAN_SOURCE; 196 private int mExpectedBatchedScans = 0; 197 private long mBatchedScanMinPollTime = 0; 198 199 private boolean mScreenOn = false; 200 201 /* Chipset supports background scan */ 202 private final boolean mBackgroundScanSupported; 203 204 private String mInterfaceName; 205 /* Tethering interface could be separate from wlan interface */ 206 private String mTetherInterfaceName; 207 208 private int mLastSignalLevel = -1; 209 private String mLastBssid; 210 private int mLastNetworkId; // The network Id we successfully joined 211 private boolean linkDebouncing = false; 212 213 // Testing various network disconnect cases by sending lots of spurious 214 // disconnect to supplicant 215 private boolean testNetworkDisconnect = false; 216 217 private boolean mEnableRssiPolling = false; 218 private boolean mEnableBackgroundScan = false; 219 private int mRssiPollToken = 0; 220 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 221 * In CONNECT_MODE, the STA can scan and connect to an access point 222 * In SCAN_ONLY_MODE, the STA can only scan for access points 223 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 224 */ 225 private int mOperationalMode = CONNECT_MODE; 226 private boolean mIsScanOngoing = false; 227 private boolean mIsFullScanOngoing = false; 228 private boolean mSendScanResultsBroadcast = false; 229 230 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 231 private WorkSource mScanWorkSource = null; 232 private static final int UNKNOWN_SCAN_SOURCE = -1; 233 private static final int SCAN_ALARM_SOURCE = -2; 234 private static final int ADD_OR_UPDATE_SOURCE = -3; 235 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 236 private static final int ENABLE_WIFI = -5; 237 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 238 239 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 240 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 241 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 242 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 243 244 private static final String BATCHED_SETTING = "batched_settings"; 245 private static final String BATCHED_WORKSOURCE = "batched_worksource"; 246 247 /* Tracks if state machine has received any screen state change broadcast yet. 248 * We can miss one of these at boot. 249 */ 250 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 251 252 private boolean mBluetoothConnectionActive = false; 253 254 private PowerManager.WakeLock mSuspendWakeLock; 255 256 /** 257 * Interval in milliseconds between polling for RSSI 258 * and linkspeed information 259 */ 260 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 261 262 /** 263 * Interval in milliseconds between receiving a disconnect event 264 * while connected to a good AP, and handling the disconnect proper 265 */ 266 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 267 268 /** 269 * Delay between supplicant restarts upon failure to establish connection 270 */ 271 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 272 273 /** 274 * Number of times we attempt to restart supplicant 275 */ 276 private static final int SUPPLICANT_RESTART_TRIES = 5; 277 278 private int mSupplicantRestartCount = 0; 279 /* Tracks sequence number on stop failure message */ 280 private int mSupplicantStopFailureToken = 0; 281 282 /** 283 * Tether state change notification time out 284 */ 285 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 286 287 /* Tracks sequence number on a tether notification time out */ 288 private int mTetherToken = 0; 289 290 /** 291 * Driver start time out. 292 */ 293 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 294 295 /* Tracks sequence number on a driver time out */ 296 private int mDriverStartToken = 0; 297 298 /** 299 * The link properties of the wifi interface. 300 * Do not modify this directly; use updateLinkProperties instead. 301 */ 302 private LinkProperties mLinkProperties; 303 304 /* Tracks sequence number on a periodic scan message */ 305 private int mPeriodicScanToken = 0; 306 307 // Wakelock held during wifi start/stop and driver load/unload 308 private PowerManager.WakeLock mWakeLock; 309 310 private Context mContext; 311 312 private final Object mDhcpResultsLock = new Object(); 313 private DhcpResults mDhcpResults; 314 private WifiInfo mWifiInfo; 315 private NetworkInfo mNetworkInfo; 316 private NetworkCapabilities mNetworkCapabilities; 317 private SupplicantStateTracker mSupplicantStateTracker; 318 private DhcpStateMachine mDhcpStateMachine; 319 private boolean mDhcpActive = false; 320 321 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 322 323 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 324 325 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 326 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 327 328 // Roaming failure count 329 private int mRoamFailCount = 0; 330 331 // This is the BSSID we are trying to associate to, it can be set to "any" 332 // if we havent selected a BSSID for joining. 333 // if we havent selected a BSSID for joining. 334 // The BSSID we are associated to is found in mWifiInfo 335 private String mTargetRoamBSSID = "any"; 336 337 private long mLastDriverRoamAttempt = 0; 338 339 private WifiConfiguration targetWificonfiguration = null; 340 341 // Used as debug to indicate which configuration last was saved 342 private WifiConfiguration lastSavedConfigurationAttempt = null; 343 344 // Used as debug to indicate which configuration last was removed 345 private WifiConfiguration lastForgetConfigurationAttempt = null; 346 347 boolean isRoaming() { 348 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 349 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 350 } 351 352 public void autoRoamSetBSSID(int netId, String bssid) { 353 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 354 } 355 356 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 357 boolean ret = true; 358 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 359 if (bssid == null) bssid = "any"; 360 if (config == null) return false; // Nothing to do 361 362 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 363 return false; // We didnt change anything 364 } 365 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 366 // Changing to ANY 367 if (!mWifiConfigStore.roamOnAny) { 368 ret = false; // Nothing to do 369 } 370 } 371 if (VDBG) { 372 loge("autoRoamSetBSSID " + bssid 373 + " key=" + config.configKey()); 374 } 375 config.autoJoinBSSID = bssid; 376 mTargetRoamBSSID = bssid; 377 mWifiConfigStore.saveWifiConfigBSSID(config); 378 return ret; 379 } 380 381 /** 382 * Subset of link properties coming from netlink. 383 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 384 * and domains obtained from router advertisements (RFC 6106). 385 */ 386 private NetlinkTracker mNetlinkTracker; 387 388 private AlarmManager mAlarmManager; 389 private PendingIntent mScanIntent; 390 private PendingIntent mDriverStopIntent; 391 private PendingIntent mBatchedScanIntervalIntent; 392 393 /* Tracks current frequency mode */ 394 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 395 396 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 397 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 398 399 // Channel for sending replies. 400 private AsyncChannel mReplyChannel = new AsyncChannel(); 401 402 private WifiP2pServiceImpl mWifiP2pServiceImpl; 403 404 // Used to initiate a connection with WifiP2pService 405 private AsyncChannel mWifiP2pChannel; 406 private AsyncChannel mWifiApConfigChannel; 407 408 private int mConnectionRequests = 0; 409 private WifiNetworkFactory mNetworkFactory; 410 private WifiNetworkAgent mNetworkAgent; 411 412 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 413 // We should really persist that into the networkHistory.txt file, and read it back when 414 // WifiStateMachine starts up 415 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 416 417 // Used to filter out requests we couldn't possibly satisfy. 418 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 419 420 /* The base for wifi message types */ 421 static final int BASE = Protocol.BASE_WIFI; 422 /* Start the supplicant */ 423 static final int CMD_START_SUPPLICANT = BASE + 11; 424 /* Stop the supplicant */ 425 static final int CMD_STOP_SUPPLICANT = BASE + 12; 426 /* Start the driver */ 427 static final int CMD_START_DRIVER = BASE + 13; 428 /* Stop the driver */ 429 static final int CMD_STOP_DRIVER = BASE + 14; 430 /* Indicates Static IP succeeded */ 431 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 432 /* Indicates Static IP failed */ 433 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 434 /* Indicates supplicant stop failed */ 435 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 436 /* Delayed stop to avoid shutting down driver too quick*/ 437 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 438 /* A delayed message sent to start driver when it fail to come up */ 439 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 440 441 /* Start the soft access point */ 442 static final int CMD_START_AP = BASE + 21; 443 /* Indicates soft ap start succeeded */ 444 static final int CMD_START_AP_SUCCESS = BASE + 22; 445 /* Indicates soft ap start failed */ 446 static final int CMD_START_AP_FAILURE = BASE + 23; 447 /* Stop the soft access point */ 448 static final int CMD_STOP_AP = BASE + 24; 449 /* Set the soft access point configuration */ 450 static final int CMD_SET_AP_CONFIG = BASE + 25; 451 /* Soft access point configuration set completed */ 452 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 453 /* Request the soft access point configuration */ 454 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 455 /* Response to access point configuration request */ 456 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 457 /* Invoked when getting a tether state change notification */ 458 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 459 /* A delayed message sent to indicate tether state change failed to arrive */ 460 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 461 462 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 463 464 /* Supplicant commands */ 465 /* Is supplicant alive ? */ 466 static final int CMD_PING_SUPPLICANT = BASE + 51; 467 /* Add/update a network configuration */ 468 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 469 /* Delete a network */ 470 static final int CMD_REMOVE_NETWORK = BASE + 53; 471 /* Enable a network. The device will attempt a connection to the given network. */ 472 static final int CMD_ENABLE_NETWORK = BASE + 54; 473 /* Enable all networks */ 474 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 475 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 476 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 477 /* Clear the blacklist network list */ 478 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 479 /* Save configuration */ 480 static final int CMD_SAVE_CONFIG = BASE + 58; 481 /* Get configured networks */ 482 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 483 /* Get available frequencies */ 484 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 485 /* Get adaptors */ 486 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 487 /* Get configured networks with real preSharedKey */ 488 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 489 /* Get Link Layer Stats thru HAL */ 490 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 491 /* Supplicant commands after driver start*/ 492 /* Initiate a scan */ 493 static final int CMD_START_SCAN = BASE + 71; 494 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 495 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 496 /* Disconnect from a network */ 497 static final int CMD_DISCONNECT = BASE + 73; 498 /* Reconnect to a network */ 499 static final int CMD_RECONNECT = BASE + 74; 500 /* Reassociate to a network */ 501 static final int CMD_REASSOCIATE = BASE + 75; 502 /* Get Connection Statistis */ 503 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 504 505 /* Controls suspend mode optimizations 506 * 507 * When high perf mode is enabled, suspend mode optimizations are disabled 508 * 509 * When high perf mode is disabled, suspend mode optimizations are enabled 510 * 511 * Suspend mode optimizations include: 512 * - packet filtering 513 * - turn off roaming 514 * - DTIM wake up settings 515 */ 516 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 517 /* Set the country code */ 518 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 519 /* Enables RSSI poll */ 520 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 521 /* RSSI poll */ 522 static final int CMD_RSSI_POLL = BASE + 83; 523 /* Set up packet filtering */ 524 static final int CMD_START_PACKET_FILTERING = BASE + 84; 525 /* Clear packet filter */ 526 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 527 /* Enable suspend mode optimizations in the driver */ 528 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 529 /* Delayed NETWORK_DISCONNECT */ 530 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 531 /* When there are no saved networks, we do a periodic scan to notify user of 532 * an open network */ 533 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 534 /* Test network Disconnection NETWORK_DISCONNECT */ 535 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 536 private int testNetworkDisconnectCounter = 0; 537 538 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 539 static final int MULTICAST_V6 = 1; 540 static final int MULTICAST_V4 = 0; 541 542 /* Set the frequency band */ 543 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 544 /* Enable TDLS on a specific MAC address */ 545 static final int CMD_ENABLE_TDLS = BASE + 92; 546 /* DHCP/IP configuration watchdog */ 547 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 548 549 /** 550 * Make this timer 40 seconds, which is about the normal DHCP timeout. 551 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 552 * for more than 30 seconds. 553 */ 554 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 555 556 int obtainingIpWatchdogCount = 0; 557 558 /* Commands from/to the SupplicantStateTracker */ 559 /* Reset the supplicant state tracker */ 560 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 561 562 563 /** 564 * Watchdog for protecting against b/16823537 565 * Leave time for 4-ways handshake to succeed 566 */ 567 static final int ROAM_GUARD_TIMER_MSEC = 15000; 568 569 int roamWatchdogCount = 0; 570 /* Roam state watchdog */ 571 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 572 /* Screen change intent handling */ 573 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 574 575 int disconnectingWatchdogCount = 0; 576 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 577 578 /* Disconnecting state watchdog */ 579 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 580 581 /* P2p commands */ 582 /* We are ok with no response here since we wont do much with it anyway */ 583 public static final int CMD_ENABLE_P2P = BASE + 131; 584 /* In order to shut down supplicant cleanly, we wait till p2p has 585 * been disabled */ 586 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 587 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 588 589 public static final int CMD_BOOT_COMPLETED = BASE + 134; 590 591 /* change the batch scan settings. 592 * arg1 = responsible UID 593 * arg2 = csph (channel scans per hour) 594 * obj = bundle with the new settings and the optional worksource 595 */ 596 public static final int CMD_SET_BATCHED_SCAN = BASE + 135; 597 public static final int CMD_START_NEXT_BATCHED_SCAN = BASE + 136; 598 public static final int CMD_POLL_BATCHED_SCAN = BASE + 137; 599 600 /* We now have a valid IP configuration. */ 601 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 602 /* We no longer have a valid IP configuration. */ 603 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 604 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 605 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 606 607 /* Supplicant is trying to associate to a given BSSID */ 608 static final int CMD_TARGET_BSSID = BASE + 141; 609 610 /* Reload all networks and reconnect */ 611 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 612 613 static final int CMD_AUTO_CONNECT = BASE + 143; 614 615 static final int network_status_unwanted_disconnect = 0; 616 static final int network_status_unwanted_disable_autojoin = 1; 617 618 static final int CMD_UNWANTED_NETWORK = BASE + 144; 619 620 static final int CMD_AUTO_ROAM = BASE + 145; 621 622 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 623 624 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 625 626 static final int CMD_NETWORK_STATUS = BASE + 148; 627 628 /* Wifi state machine modes of operation */ 629 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 630 public static final int CONNECT_MODE = 1; 631 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 632 public static final int SCAN_ONLY_MODE = 2; 633 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 634 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 635 636 private static final int SUCCESS = 1; 637 private static final int FAILURE = -1; 638 639 /* Tracks if suspend optimizations need to be disabled by DHCP, 640 * screen or due to high perf mode. 641 * When any of them needs to disable it, we keep the suspend optimizations 642 * disabled 643 */ 644 private int mSuspendOptNeedsDisabled = 0; 645 646 private static final int SUSPEND_DUE_TO_DHCP = 1; 647 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1<<1; 648 private static final int SUSPEND_DUE_TO_SCREEN = 1<<2; 649 650 /* Tracks if user has enabled suspend optimizations through settings */ 651 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 652 653 /** 654 * Default framework scan interval in milliseconds. This is used in the scenario in which 655 * wifi chipset does not support background scanning to set up a 656 * periodic wake up scan so that the device can connect to a new access 657 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 658 * override this. 659 */ 660 private final int mDefaultFrameworkScanIntervalMs; 661 662 private int mDisconnectedScanPeriodMs = 10000; 663 664 /** 665 * Supplicant scan interval in milliseconds. 666 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 667 * from the default config if the setting is not set 668 */ 669 private long mSupplicantScanIntervalMs; 670 671 /** 672 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 673 */ 674 private long lastFullBandConnectedTimeMilli; 675 676 /** 677 * time interval to the next full band scan we will perform for 678 * autojoin while connected with screen lit 679 */ 680 private long fullBandConnectedTimeIntervalMilli; 681 682 /** 683 * max time interval to the next full band scan we will perform for 684 * autojoin while connected with screen lit 685 * Max time is 5 minutes 686 */ 687 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 688 689 /** 690 * Minimum time interval between enabling all networks. 691 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 692 * due to enabling every time. We add a threshold to avoid this. 693 */ 694 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 695 private long mLastEnableAllNetworksTime; 696 697 int mRunningBeaconCount = 0; 698 699 /** 700 * Starting and shutting down driver too quick causes problems leading to driver 701 * being in a bad state. Delay driver stop. 702 */ 703 private final int mDriverStopDelayMs; 704 private int mDelayedStopCounter; 705 private boolean mInDelayedStop = false; 706 707 // sometimes telephony gives us this data before boot is complete and we can't store it 708 // until after, so the write is deferred 709 private volatile String mPersistedCountryCode; 710 711 // Supplicant doesn't like setting the same country code multiple times (it may drop 712 // currently connected network), so we save the country code here to avoid redundency 713 private String mLastSetCountryCode; 714 715 /* Default parent state */ 716 private State mDefaultState = new DefaultState(); 717 /* Temporary initial state */ 718 private State mInitialState = new InitialState(); 719 /* Driver loaded, waiting for supplicant to start */ 720 private State mSupplicantStartingState = new SupplicantStartingState(); 721 /* Driver loaded and supplicant ready */ 722 private State mSupplicantStartedState = new SupplicantStartedState(); 723 /* Waiting for supplicant to stop and monitor to exit */ 724 private State mSupplicantStoppingState = new SupplicantStoppingState(); 725 /* Driver start issued, waiting for completed event */ 726 private State mDriverStartingState = new DriverStartingState(); 727 /* Driver started */ 728 private State mDriverStartedState = new DriverStartedState(); 729 /* Wait until p2p is disabled 730 * This is a special state which is entered right after we exit out of DriverStartedState 731 * before transitioning to another state. 732 */ 733 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 734 /* Driver stopping */ 735 private State mDriverStoppingState = new DriverStoppingState(); 736 /* Driver stopped */ 737 private State mDriverStoppedState = new DriverStoppedState(); 738 /* Scan for networks, no connection will be established */ 739 private State mScanModeState = new ScanModeState(); 740 /* Connecting to an access point */ 741 private State mConnectModeState = new ConnectModeState(); 742 /* Connected at 802.11 (L2) level */ 743 private State mL2ConnectedState = new L2ConnectedState(); 744 /* fetching IP after connection to access point (assoc+auth complete) */ 745 private State mObtainingIpState = new ObtainingIpState(); 746 /* Waiting for link quality verification to be complete */ 747 private State mVerifyingLinkState = new VerifyingLinkState(); 748 /* Connected with IP addr */ 749 private State mConnectedState = new ConnectedState(); 750 /* Roaming */ 751 private State mRoamingState = new RoamingState(); 752 /* disconnect issued, waiting for network disconnect confirmation */ 753 private State mDisconnectingState = new DisconnectingState(); 754 /* Network is not connected, supplicant assoc+auth is not complete */ 755 private State mDisconnectedState = new DisconnectedState(); 756 /* Waiting for WPS to be completed*/ 757 private State mWpsRunningState = new WpsRunningState(); 758 759 /* Soft ap is starting up */ 760 private State mSoftApStartingState = new SoftApStartingState(); 761 /* Soft ap is running */ 762 private State mSoftApStartedState = new SoftApStartedState(); 763 /* Soft ap is running and we are waiting for tether notification */ 764 private State mTetheringState = new TetheringState(); 765 /* Soft ap is running and we are tethered through connectivity service */ 766 private State mTetheredState = new TetheredState(); 767 /* Waiting for untether confirmation before stopping soft Ap */ 768 private State mUntetheringState = new UntetheringState(); 769 770 private class TetherStateChange { 771 ArrayList<String> available; 772 ArrayList<String> active; 773 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 774 available = av; 775 active = ac; 776 } 777 } 778 779 public static class SimAuthRequestData { 780 int networkId; 781 int protocol; 782 String ssid; 783 String[] challenges; 784 } 785 786 public static class SimAuthResponseData { 787 int id; 788 String Kc1; 789 String SRES1; 790 String Kc2; 791 String SRES2; 792 String Kc3; 793 String SRES3; 794 } 795 796 /** 797 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 798 * {@link WifiManager#WIFI_STATE_DISABLING}, 799 * {@link WifiManager#WIFI_STATE_ENABLED}, 800 * {@link WifiManager#WIFI_STATE_ENABLING}, 801 * {@link WifiManager#WIFI_STATE_UNKNOWN} 802 * 803 */ 804 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 805 806 /** 807 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 808 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 809 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 810 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 811 * {@link WifiManager#WIFI_AP_STATE_FAILED} 812 * 813 */ 814 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 815 816 private static final int SCAN_REQUEST = 0; 817 private static final String ACTION_START_SCAN = 818 "com.android.server.WifiManager.action.START_SCAN"; 819 820 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 821 private static final int DRIVER_STOP_REQUEST = 0; 822 private static final String ACTION_DELAYED_DRIVER_STOP = 823 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 824 825 private static final String ACTION_REFRESH_BATCHED_SCAN = 826 "com.android.server.WifiManager.action.REFRESH_BATCHED_SCAN"; 827 /** 828 * Keep track of whether WIFI is running. 829 */ 830 private boolean mIsRunning = false; 831 832 /** 833 * Keep track of whether we last told the battery stats we had started. 834 */ 835 private boolean mReportedRunning = false; 836 837 /** 838 * Most recently set source of starting WIFI. 839 */ 840 private final WorkSource mRunningWifiUids = new WorkSource(); 841 842 /** 843 * The last reported UIDs that were responsible for starting WIFI. 844 */ 845 private final WorkSource mLastRunningWifiUids = new WorkSource(); 846 847 private final IBatteryStats mBatteryStats; 848 849 private BatchedScanSettings mBatchedScanSettings = null; 850 851 /** 852 * Track the worksource/cost of the current settings and track what's been noted 853 * to the battery stats, so we can mark the end of the previous when changing. 854 */ 855 private WorkSource mBatchedScanWorkSource = null; 856 private int mBatchedScanCsph = 0; 857 private WorkSource mNotedBatchedScanWorkSource = null; 858 private int mNotedBatchedScanCsph = 0; 859 860 private String mTcpBufferSizes = null; 861 862 // Used for debug and stats gathering 863 private static int sScanAlarmIntentCount = 0; 864 865 final static int frameworkMinScanIntervalSaneValue = 10000; 866 867 public WifiStateMachine(Context context, String wlanInterface, 868 WifiTrafficPoller trafficPoller){ 869 super("WifiStateMachine"); 870 mContext = context; 871 mInterfaceName = wlanInterface; 872 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 873 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 874 BatteryStats.SERVICE_NAME)); 875 876 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 877 mNwService = INetworkManagementService.Stub.asInterface(b); 878 879 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 880 PackageManager.FEATURE_WIFI_DIRECT); 881 882 mWifiNative = new WifiNative(mInterfaceName); 883 mWifiConfigStore = new WifiConfigStore(context, mWifiNative); 884 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 885 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 886 mWifiMonitor = new WifiMonitor(this, mWifiNative); 887 mWifiInfo = new WifiInfo(); 888 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 889 getHandler()); 890 mLinkProperties = new LinkProperties(); 891 892 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 893 mWifiP2pServiceImpl = (WifiP2pServiceImpl)IWifiP2pManager.Stub.asInterface(s1); 894 895 mNetworkInfo.setIsAvailable(false); 896 mLastBssid = null; 897 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 898 mLastSignalLevel = -1; 899 900 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 901 public void update() { 902 sendMessage(CMD_UPDATE_LINKPROPERTIES); 903 } 904 }); 905 try { 906 mNwService.registerObserver(mNetlinkTracker); 907 } catch (RemoteException e) { 908 loge("Couldn't register netlink tracker: " + e.toString()); 909 } 910 911 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 912 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 913 mBatchedScanIntervalIntent = getPrivateBroadcast(ACTION_REFRESH_BATCHED_SCAN, 0); 914 915 // Make sure the interval is not configured less than 10 seconds 916 int period = mContext.getResources().getInteger( 917 R.integer.config_wifi_framework_scan_interval); 918 if (period < frameworkMinScanIntervalSaneValue) { 919 period = frameworkMinScanIntervalSaneValue; 920 } 921 mDefaultFrameworkScanIntervalMs = period; 922 mDriverStopDelayMs = mContext.getResources().getInteger( 923 R.integer.config_wifi_driver_stop_delay); 924 925 mBackgroundScanSupported = mContext.getResources().getBoolean( 926 R.bool.config_wifi_background_scan_support); 927 928 mPrimaryDeviceType = mContext.getResources().getString( 929 R.string.config_wifi_p2p_device_type); 930 931 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 932 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 933 934 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 935 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 936 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 937 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 938 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 939 // TODO - needs to be a bit more dynamic 940 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 941 942 mContext.registerReceiver( 943 new BroadcastReceiver() { 944 @Override 945 public void onReceive(Context context, Intent intent) { 946 ArrayList<String> available = intent.getStringArrayListExtra( 947 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 948 ArrayList<String> active = intent.getStringArrayListExtra( 949 ConnectivityManager.EXTRA_ACTIVE_TETHER); 950 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 951 } 952 },new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 953 954 mContext.registerReceiver( 955 new BroadcastReceiver() { 956 @Override 957 public void onReceive(Context context, Intent intent) { 958 sScanAlarmIntentCount++; // Used for debug only 959 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 960 if (VDBG) 961 loge("WiFiStateMachine SCAN ALARM -> " + mDelayedScanCounter.get()); 962 } 963 }, 964 new IntentFilter(ACTION_START_SCAN)); 965 966 IntentFilter filter = new IntentFilter(); 967 filter.addAction(Intent.ACTION_SCREEN_ON); 968 filter.addAction(Intent.ACTION_SCREEN_OFF); 969 filter.addAction(ACTION_REFRESH_BATCHED_SCAN); 970 mContext.registerReceiver( 971 new BroadcastReceiver() { 972 @Override 973 public void onReceive(Context context, Intent intent) { 974 String action = intent.getAction(); 975 976 if (action.equals(Intent.ACTION_SCREEN_ON)) { 977 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 978 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 979 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 980 } else if (action.equals(ACTION_REFRESH_BATCHED_SCAN)) { 981 startNextBatchedScanAsync(); 982 } 983 } 984 }, filter); 985 986 mContext.registerReceiver( 987 new BroadcastReceiver() { 988 @Override 989 public void onReceive(Context context, Intent intent) { 990 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 991 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 992 } 993 }, 994 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 995 996 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 997 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 998 new ContentObserver(getHandler()) { 999 @Override 1000 public void onChange(boolean selfChange) { 1001 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1002 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1003 } 1004 }); 1005 1006 mContext.registerReceiver( 1007 new BroadcastReceiver() { 1008 @Override 1009 public void onReceive(Context context, Intent intent) { 1010 sendMessage(CMD_BOOT_COMPLETED); 1011 } 1012 }, 1013 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1014 1015 mScanResultCache = new LruCache<String, ScanResult>(SCAN_RESULT_CACHE_SIZE); 1016 1017 PowerManager powerManager = (PowerManager)mContext.getSystemService(Context.POWER_SERVICE); 1018 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1019 1020 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1021 mSuspendWakeLock.setReferenceCounted(false); 1022 1023 mTcpBufferSizes = mContext.getResources().getString( 1024 com.android.internal.R.string.config_wifi_tcp_buffers); 1025 1026 addState(mDefaultState); 1027 addState(mInitialState, mDefaultState); 1028 addState(mSupplicantStartingState, mDefaultState); 1029 addState(mSupplicantStartedState, mDefaultState); 1030 addState(mDriverStartingState, mSupplicantStartedState); 1031 addState(mDriverStartedState, mSupplicantStartedState); 1032 addState(mScanModeState, mDriverStartedState); 1033 addState(mConnectModeState, mDriverStartedState); 1034 addState(mL2ConnectedState, mConnectModeState); 1035 addState(mObtainingIpState, mL2ConnectedState); 1036 addState(mVerifyingLinkState, mL2ConnectedState); 1037 addState(mConnectedState, mL2ConnectedState); 1038 addState(mRoamingState, mL2ConnectedState); 1039 addState(mDisconnectingState, mConnectModeState); 1040 addState(mDisconnectedState, mConnectModeState); 1041 addState(mWpsRunningState, mConnectModeState); 1042 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1043 addState(mDriverStoppingState, mSupplicantStartedState); 1044 addState(mDriverStoppedState, mSupplicantStartedState); 1045 addState(mSupplicantStoppingState, mDefaultState); 1046 addState(mSoftApStartingState, mDefaultState); 1047 addState(mSoftApStartedState, mDefaultState); 1048 addState(mTetheringState, mSoftApStartedState); 1049 addState(mTetheredState, mSoftApStartedState); 1050 addState(mUntetheringState, mSoftApStartedState); 1051 1052 setInitialState(mInitialState); 1053 1054 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1055 setLogOnlyTransitions(false); 1056 if (VDBG) setDbg(true); 1057 1058 //start the state machine 1059 start(); 1060 1061 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1062 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1063 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1064 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1065 } 1066 1067 1068 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1069 Intent intent = new Intent(action, null); 1070 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1071 intent.setPackage(this.getClass().getPackage().getName()); 1072 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1073 } 1074 1075 private int mVerboseLoggingLevel = 0; 1076 1077 int getVerboseLoggingLevel() { 1078 return mVerboseLoggingLevel; 1079 } 1080 1081 void enableVerboseLogging(int verbose) { 1082 mVerboseLoggingLevel = verbose; 1083 if (verbose > 0) { 1084 DBG = true; 1085 VDBG = true; 1086 PDBG = true; 1087 mLogMessages = true; 1088 mWifiNative.setSupplicantLogLevel("DEBUG"); 1089 } else { 1090 DBG = false; 1091 VDBG = false; 1092 PDBG = false; 1093 mLogMessages = false; 1094 mWifiNative.setSupplicantLogLevel("INFO"); 1095 } 1096 mWifiAutoJoinController.enableVerboseLogging(verbose); 1097 mWifiMonitor.enableVerboseLogging(verbose); 1098 mWifiNative.enableVerboseLogging(verbose); 1099 mWifiConfigStore.enableVerboseLogging(verbose); 1100 mSupplicantStateTracker.enableVerboseLogging(verbose); 1101 } 1102 1103 private int mAggressiveHandover = 0; 1104 1105 int getAggressiveHandover() { 1106 return mAggressiveHandover; 1107 } 1108 1109 void enableAggressiveHandover(int enabled) { 1110 mAggressiveHandover = enabled; 1111 } 1112 1113 public void setAllowScansWithTraffic(int enabled) { 1114 mWifiConfigStore.alwaysEnableScansWhileAssociated = enabled; 1115 } 1116 1117 public int getAllowScansWithTraffic() { 1118 return mWifiConfigStore.alwaysEnableScansWhileAssociated; 1119 } 1120 1121 /* 1122 * 1123 * Framework scan control 1124 */ 1125 1126 private boolean mAlarmEnabled = false; 1127 /* This is set from the overlay config file or from a secure setting. 1128 * A value of 0 disables scanning in the framework. 1129 */ 1130 private long mFrameworkScanIntervalMs = 10000; 1131 1132 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1133 1134 private void setScanAlarm(boolean enabled) { 1135 if (PDBG) { 1136 loge("setScanAlarm " + enabled 1137 + " period " + mDefaultFrameworkScanIntervalMs 1138 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1139 } 1140 if (mBackgroundScanSupported == false) { 1141 // Scan alarm is only used for background scans if they are not 1142 // offloaded to the wifi chipset, hence enable the scan alarm 1143 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1144 enabled = true; 1145 } 1146 1147 if (enabled == mAlarmEnabled) return; 1148 if (enabled) { 1149 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1150 /* going to wake up the host processor to look for access points */ 1151 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1152 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1153 mScanIntent); 1154 mAlarmEnabled = true; 1155 } else { 1156 mAlarmManager.cancel(mScanIntent); 1157 mAlarmEnabled = false; 1158 } 1159 } 1160 1161 private void cancelDelayedScan() { 1162 mDelayedScanCounter.incrementAndGet(); 1163 loge("cancelDelayedScan -> " + mDelayedScanCounter); 1164 } 1165 1166 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1167 ScanSettings settings, WorkSource workSource) { 1168 if (counter != mDelayedScanCounter.get()) { 1169 return false; 1170 } 1171 if (restart) 1172 startDelayedScan(milli, settings, workSource); 1173 return true; 1174 } 1175 1176 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1177 if (milli <= 0) return; 1178 /** 1179 * The cases where the scan alarm should be run are : 1180 * - DisconnectedState && screenOn => used delayed timer 1181 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1182 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1183 * - ConnectedState && screenOn => used delayed timer 1184 */ 1185 1186 mDelayedScanCounter.incrementAndGet(); 1187 if (mScreenOn && 1188 (getCurrentState() == mDisconnectedState 1189 || getCurrentState() == mConnectedState)) { 1190 Bundle bundle = new Bundle(); 1191 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1192 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1193 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1194 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1195 mDelayedScanCounter.get(), bundle, milli); 1196 if (DBG) loge("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1197 } else if (mBackgroundScanSupported == false 1198 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1199 setScanAlarm(true); 1200 if (DBG) loge("startDelayedScan start scan alarm -> " 1201 + mDelayedScanCounter + " milli " + milli); 1202 } else { 1203 if (DBG) loge("startDelayedScan unhandled -> " 1204 + mDelayedScanCounter + " milli " + milli); 1205 } 1206 } 1207 1208 private boolean setRandomMacOui() { 1209 String oui = mContext.getResources().getString( 1210 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1211 String[] ouiParts = oui.split("-"); 1212 byte[] ouiBytes = new byte[3]; 1213 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1214 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1215 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1216 1217 logd("Setting OUI to " + oui); 1218 return mWifiNative.setScanningMacOui(ouiBytes); 1219 } 1220 1221 /********************************************************* 1222 * Methods exposed for public use 1223 ********************************************************/ 1224 1225 public Messenger getMessenger() { 1226 return new Messenger(getHandler()); 1227 } 1228 1229 public WifiMonitor getWifiMonitor() { 1230 return mWifiMonitor; 1231 } 1232 1233 /** 1234 * TODO: doc 1235 */ 1236 public boolean syncPingSupplicant(AsyncChannel channel) { 1237 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1238 boolean result = (resultMsg.arg1 != FAILURE); 1239 resultMsg.recycle(); 1240 return result; 1241 } 1242 1243 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1244 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1245 List<WifiChannel> list = null; 1246 if (resultMsg.obj != null) { 1247 list = new ArrayList<WifiChannel>(); 1248 String freqs = (String) resultMsg.obj; 1249 String[] lines = freqs.split("\n"); 1250 for (String line : lines) 1251 if (line.contains("MHz")) { 1252 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1253 WifiChannel c = new WifiChannel(); 1254 String[] prop = line.split(" "); 1255 if (prop.length < 5) continue; 1256 try { 1257 c.channelNum = Integer.parseInt(prop[1]); 1258 c.freqMHz = Integer.parseInt(prop[3]); 1259 } catch (NumberFormatException e) { } 1260 c.isDFS = line.contains("(DFS)"); 1261 list.add(c); 1262 } else if (line.contains("Mode[B] Channels:")) { 1263 // B channels are the same as G channels, skipped 1264 break; 1265 } 1266 } 1267 resultMsg.recycle(); 1268 return (list != null && list.size() > 0) ? list : null; 1269 } 1270 1271 /** 1272 * When settings allowing making use of untrusted networks change, trigger a scan 1273 * so as to kick of autojoin. 1274 */ 1275 public void startScanForUntrustedSettingChange() { 1276 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1277 } 1278 1279 /** 1280 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1281 * given to callingUid. 1282 * 1283 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1284 * workSource is specified. 1285 * @param workSource If not null, blame is given to workSource. 1286 * @param settings Scan settings, see {@link ScanSettings}. 1287 */ 1288 public void startScan(int callingUid, int scanCounter, 1289 ScanSettings settings, WorkSource workSource) { 1290 Bundle bundle = new Bundle(); 1291 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1292 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1293 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1294 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1295 } 1296 1297 /** 1298 * start or stop batched scanning using the given settings 1299 */ 1300 public void setBatchedScanSettings(BatchedScanSettings settings, int callingUid, int csph, 1301 WorkSource workSource) { 1302 Bundle bundle = new Bundle(); 1303 bundle.putParcelable(BATCHED_SETTING, settings); 1304 bundle.putParcelable(BATCHED_WORKSOURCE, workSource); 1305 sendMessage(CMD_SET_BATCHED_SCAN, callingUid, csph, bundle); 1306 } 1307 1308 public List<BatchedScanResult> syncGetBatchedScanResultsList() { 1309 synchronized (mBatchedScanResults) { 1310 List<BatchedScanResult> batchedScanList = 1311 new ArrayList<BatchedScanResult>(mBatchedScanResults.size()); 1312 for(BatchedScanResult result: mBatchedScanResults) { 1313 batchedScanList.add(new BatchedScanResult(result)); 1314 } 1315 return batchedScanList; 1316 } 1317 } 1318 1319 public void requestBatchedScanPoll() { 1320 sendMessage(CMD_POLL_BATCHED_SCAN); 1321 } 1322 1323 private void startBatchedScan() { 1324 if (mBatchedScanSettings == null) return; 1325 1326 if (mDhcpActive) { 1327 if (DBG) log("not starting Batched Scans due to DHCP"); 1328 return; 1329 } 1330 1331 // first grab any existing data 1332 retrieveBatchedScanData(); 1333 1334 if (PDBG) loge("try starting Batched Scans due to DHCP"); 1335 1336 1337 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1338 1339 String scansExpected = mWifiNative.setBatchedScanSettings(mBatchedScanSettings); 1340 try { 1341 mExpectedBatchedScans = Integer.parseInt(scansExpected); 1342 setNextBatchedAlarm(mExpectedBatchedScans); 1343 if (mExpectedBatchedScans > 0) noteBatchedScanStart(); 1344 } catch (NumberFormatException e) { 1345 stopBatchedScan(); 1346 loge("Exception parsing WifiNative.setBatchedScanSettings response " + e); 1347 } 1348 } 1349 1350 // called from BroadcastListener 1351 private void startNextBatchedScanAsync() { 1352 sendMessage(CMD_START_NEXT_BATCHED_SCAN); 1353 } 1354 1355 private void startNextBatchedScan() { 1356 // first grab any existing data 1357 retrieveBatchedScanData(); 1358 1359 setNextBatchedAlarm(mExpectedBatchedScans); 1360 } 1361 1362 private void handleBatchedScanPollRequest() { 1363 if (DBG) { 1364 log("handleBatchedScanPoll Request - mBatchedScanMinPollTime=" + 1365 mBatchedScanMinPollTime + " , mBatchedScanSettings=" + 1366 mBatchedScanSettings); 1367 } 1368 // if there is no appropriate PollTime that's because we either aren't 1369 // batching or we've already set a time for a poll request 1370 if (mBatchedScanMinPollTime == 0) return; 1371 if (mBatchedScanSettings == null) return; 1372 1373 long now = System.currentTimeMillis(); 1374 1375 if (now > mBatchedScanMinPollTime) { 1376 // do the poll and reset our timers 1377 startNextBatchedScan(); 1378 } else { 1379 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, mBatchedScanMinPollTime, 1380 mBatchedScanIntervalIntent); 1381 mBatchedScanMinPollTime = 0; 1382 } 1383 } 1384 1385 // return true if new/different 1386 private boolean recordBatchedScanSettings(int responsibleUid, int csph, Bundle bundle) { 1387 BatchedScanSettings settings = bundle.getParcelable(BATCHED_SETTING); 1388 WorkSource responsibleWorkSource = bundle.getParcelable(BATCHED_WORKSOURCE); 1389 1390 if (DBG) { 1391 log("set batched scan to " + settings + " for uid=" + responsibleUid + 1392 ", worksource=" + responsibleWorkSource); 1393 } 1394 if (settings != null) { 1395 if (settings.equals(mBatchedScanSettings)) return false; 1396 } else { 1397 if (mBatchedScanSettings == null) return false; 1398 } 1399 mBatchedScanSettings = settings; 1400 if (responsibleWorkSource == null) responsibleWorkSource = new WorkSource(responsibleUid); 1401 mBatchedScanWorkSource = responsibleWorkSource; 1402 mBatchedScanCsph = csph; 1403 return true; 1404 } 1405 1406 private void stopBatchedScan() { 1407 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1408 retrieveBatchedScanData(); 1409 mWifiNative.setBatchedScanSettings(null); 1410 noteBatchedScanStop(); 1411 } 1412 1413 private void setNextBatchedAlarm(int scansExpected) { 1414 1415 if (mBatchedScanSettings == null || scansExpected < 1) return; 1416 1417 mBatchedScanMinPollTime = System.currentTimeMillis() + 1418 mBatchedScanSettings.scanIntervalSec * 1000; 1419 1420 if (mBatchedScanSettings.maxScansPerBatch < scansExpected) { 1421 scansExpected = mBatchedScanSettings.maxScansPerBatch; 1422 } 1423 1424 int secToFull = mBatchedScanSettings.scanIntervalSec; 1425 secToFull *= scansExpected; 1426 1427 int debugPeriod = SystemProperties.getInt("wifi.batchedScan.pollPeriod", 0); 1428 if (debugPeriod > 0) secToFull = debugPeriod; 1429 1430 // set the alarm to do the next poll. We set it a little short as we'd rather 1431 // wake up wearly than miss a scan due to buffer overflow 1432 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 1433 + ((secToFull - (mBatchedScanSettings.scanIntervalSec / 2)) * 1000), 1434 mBatchedScanIntervalIntent); 1435 } 1436 1437 /** 1438 * Start reading new scan data 1439 * Data comes in as: 1440 * "scancount=5\n" 1441 * "nextcount=5\n" 1442 * "apcount=3\n" 1443 * "trunc\n" (optional) 1444 * "bssid=...\n" 1445 * "ssid=...\n" 1446 * "freq=...\n" (in Mhz) 1447 * "level=...\n" 1448 * "dist=...\n" (in cm) 1449 * "distsd=...\n" (standard deviation, in cm) 1450 * "====" 1451 * "bssid=...\n" 1452 * etc 1453 * "====" 1454 * "bssid=...\n" 1455 * etc 1456 * "%%%%" 1457 * "apcount=2\n" 1458 * "bssid=...\n" 1459 * etc 1460 * "%%%% 1461 * etc 1462 * "----" 1463 */ 1464 private final static boolean DEBUG_PARSE = false; 1465 private void retrieveBatchedScanData() { 1466 String rawData = mWifiNative.getBatchedScanResults(); 1467 if (DEBUG_PARSE) log("rawData = " + rawData); 1468 mBatchedScanMinPollTime = 0; 1469 if (rawData == null || rawData.equalsIgnoreCase("OK")) { 1470 loge("Unexpected BatchedScanResults :" + rawData); 1471 return; 1472 } 1473 1474 int scanCount = 0; 1475 final String END_OF_BATCHES = "----"; 1476 final String SCANCOUNT = "scancount="; 1477 final String TRUNCATED = "trunc"; 1478 final String AGE = "age="; 1479 final String DIST = "dist="; 1480 final String DISTSD = "distSd="; 1481 1482 String splitData[] = rawData.split("\n"); 1483 int n = 0; 1484 if (splitData[n].startsWith(SCANCOUNT)) { 1485 try { 1486 scanCount = Integer.parseInt(splitData[n++].substring(SCANCOUNT.length())); 1487 } catch (NumberFormatException e) { 1488 loge("scancount parseInt Exception from " + splitData[n]); 1489 } 1490 } else log("scancount not found"); 1491 if (scanCount == 0) { 1492 loge("scanCount==0 - aborting"); 1493 return; 1494 } 1495 1496 final Intent intent = new Intent(WifiManager.BATCHED_SCAN_RESULTS_AVAILABLE_ACTION); 1497 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1498 1499 synchronized (mBatchedScanResults) { 1500 mBatchedScanResults.clear(); 1501 BatchedScanResult batchedScanResult = new BatchedScanResult(); 1502 1503 String bssid = null; 1504 WifiSsid wifiSsid = null; 1505 int level = 0; 1506 int freq = 0; 1507 int dist, distSd; 1508 long tsf = 0; 1509 dist = distSd = ScanResult.UNSPECIFIED; 1510 final long now = SystemClock.elapsedRealtime(); 1511 final int bssidStrLen = BSSID_STR.length(); 1512 1513 while (true) { 1514 while (n < splitData.length) { 1515 if (DEBUG_PARSE) logd("parsing " + splitData[n]); 1516 if (splitData[n].equals(END_OF_BATCHES)) { 1517 if (n+1 != splitData.length) { 1518 loge("didn't consume " + (splitData.length-n)); 1519 } 1520 if (mBatchedScanResults.size() > 0) { 1521 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1522 } 1523 logd("retrieveBatchedScanResults X"); 1524 return; 1525 } 1526 if ((splitData[n].equals(END_STR)) || splitData[n].equals(DELIMITER_STR)) { 1527 if (bssid != null) { 1528 batchedScanResult.scanResults.add(new ScanResult( 1529 wifiSsid, bssid, "", level, freq, tsf, dist, distSd)); 1530 wifiSsid = null; 1531 bssid = null; 1532 level = 0; 1533 freq = 0; 1534 tsf = 0; 1535 dist = distSd = ScanResult.UNSPECIFIED; 1536 } 1537 if (splitData[n].equals(END_STR)) { 1538 if (batchedScanResult.scanResults.size() != 0) { 1539 mBatchedScanResults.add(batchedScanResult); 1540 batchedScanResult = new BatchedScanResult(); 1541 } else { 1542 logd("Found empty batch"); 1543 } 1544 } 1545 } else if (splitData[n].equals(TRUNCATED)) { 1546 batchedScanResult.truncated = true; 1547 } else if (splitData[n].startsWith(BSSID_STR)) { 1548 bssid = new String(splitData[n].getBytes(), bssidStrLen, 1549 splitData[n].length() - bssidStrLen); 1550 } else if (splitData[n].startsWith(FREQ_STR)) { 1551 try { 1552 freq = Integer.parseInt(splitData[n].substring(FREQ_STR.length())); 1553 } catch (NumberFormatException e) { 1554 loge("Invalid freqency: " + splitData[n]); 1555 freq = 0; 1556 } 1557 } else if (splitData[n].startsWith(AGE)) { 1558 try { 1559 tsf = now - Long.parseLong(splitData[n].substring(AGE.length())); 1560 tsf *= 1000; // convert mS -> uS 1561 } catch (NumberFormatException e) { 1562 loge("Invalid timestamp: " + splitData[n]); 1563 tsf = 0; 1564 } 1565 } else if (splitData[n].startsWith(SSID_STR)) { 1566 wifiSsid = WifiSsid.createFromAsciiEncoded( 1567 splitData[n].substring(SSID_STR.length())); 1568 } else if (splitData[n].startsWith(LEVEL_STR)) { 1569 try { 1570 level = Integer.parseInt(splitData[n].substring(LEVEL_STR.length())); 1571 if (level > 0) level -= 256; 1572 } catch (NumberFormatException e) { 1573 loge("Invalid level: " + splitData[n]); 1574 level = 0; 1575 } 1576 } else if (splitData[n].startsWith(DIST)) { 1577 try { 1578 dist = Integer.parseInt(splitData[n].substring(DIST.length())); 1579 } catch (NumberFormatException e) { 1580 loge("Invalid distance: " + splitData[n]); 1581 dist = ScanResult.UNSPECIFIED; 1582 } 1583 } else if (splitData[n].startsWith(DISTSD)) { 1584 try { 1585 distSd = Integer.parseInt(splitData[n].substring(DISTSD.length())); 1586 } catch (NumberFormatException e) { 1587 loge("Invalid distanceSd: " + splitData[n]); 1588 distSd = ScanResult.UNSPECIFIED; 1589 } 1590 } else { 1591 loge("Unable to parse batched scan result line: " + splitData[n]); 1592 } 1593 n++; 1594 } 1595 rawData = mWifiNative.getBatchedScanResults(); 1596 if (DEBUG_PARSE) log("reading more data:\n" + rawData); 1597 if (rawData == null) { 1598 loge("Unexpected null BatchedScanResults"); 1599 return; 1600 } 1601 splitData = rawData.split("\n"); 1602 if (splitData.length == 0 || splitData[0].equals("ok")) { 1603 loge("batch scan results just ended!"); 1604 if (mBatchedScanResults.size() > 0) { 1605 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1606 } 1607 return; 1608 } 1609 n = 0; 1610 } 1611 } 1612 } 1613 1614 private long mDisconnectedTimeStamp = 0; 1615 1616 public long getDisconnectedTimeMilli() { 1617 if (getCurrentState() == mDisconnectedState 1618 && mDisconnectedTimeStamp != 0) { 1619 long now_ms = System.currentTimeMillis(); 1620 return now_ms - mDisconnectedTimeStamp; 1621 } 1622 return 0; 1623 } 1624 1625 // Keeping track of scan requests 1626 private long lastStartScanTimeStamp = 0; 1627 private long lastScanDuration = 0; 1628 // Last connect attempt is used to prevent scan requests: 1629 // - for a period of 10 seconds after attempting to connect 1630 private long lastConnectAttempt = 0; 1631 private String lastScanFreqs = null; 1632 1633 // For debugging, keep track of last message status handling 1634 // TODO, find an equivalent mechanism as part of parent class 1635 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1636 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1637 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1638 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1639 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1640 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1641 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1642 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1643 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1644 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1645 1646 private int messageHandlingStatus = 0; 1647 1648 //TODO: this is used only to track connection attempts, however the link state and packet per 1649 //TODO: second logic should be folded into that 1650 private boolean checkOrDeferScanAllowed(Message msg) { 1651 long now = System.currentTimeMillis(); 1652 if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { 1653 Message dmsg = Message.obtain(msg); 1654 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttempt)); 1655 return false; 1656 } 1657 return true; 1658 } 1659 1660 private int mOnTime = 0; 1661 private int mTxTime = 0; 1662 private int mRxTime = 0; 1663 private int mOnTimeStartScan = 0; 1664 private int mTxTimeStartScan = 0; 1665 private int mRxTimeStartScan = 0; 1666 private int mOnTimeScan = 0; 1667 private int mTxTimeScan = 0; 1668 private int mRxTimeScan = 0; 1669 private int mOnTimeThisScan = 0; 1670 private int mTxTimeThisScan = 0; 1671 private int mRxTimeThisScan = 0; 1672 1673 private int mOnTimeScreenStateChange = 0; 1674 private int mOnTimeAtLastReport = 0; 1675 private long lastOntimeReportTimeStamp = 0; 1676 private long lastScreenStateChangeTimeStamp = 0; 1677 private int mOnTimeLastReport = 0; 1678 private int mTxTimeLastReport = 0; 1679 private int mRxTimeLastReport = 0; 1680 1681 private long lastLinkLayerStatsUpdate = 0; 1682 1683 String reportOnTime() { 1684 long now = System.currentTimeMillis(); 1685 StringBuilder sb = new StringBuilder(); 1686 // Report stats since last report 1687 int on = mOnTime - mOnTimeLastReport; 1688 mOnTimeLastReport = mOnTime; 1689 int tx = mTxTime - mTxTimeLastReport; 1690 mTxTimeLastReport = mTxTime; 1691 int rx = mRxTime - mRxTimeLastReport; 1692 mRxTimeLastReport = mRxTime; 1693 int period = (int)(now - lastOntimeReportTimeStamp); 1694 lastOntimeReportTimeStamp = now; 1695 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1696 // Report stats since Screen State Changed 1697 on = mOnTime - mOnTimeScreenStateChange; 1698 period = (int)(now - lastScreenStateChangeTimeStamp); 1699 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1700 return sb.toString(); 1701 } 1702 1703 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1704 WifiLinkLayerStats stats = null; 1705 if (mWifiLinkLayerStatsSupported > 0) { 1706 String name = "wlan0"; 1707 stats = mWifiNative.getWifiLinkLayerStats(name); 1708 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1709 mWifiLinkLayerStatsSupported -= 1; 1710 } else if (stats != null) { 1711 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1712 mOnTime = stats.on_time; 1713 mTxTime = stats.tx_time; 1714 mRxTime = stats.rx_time; 1715 mRunningBeaconCount = stats.beacon_rx; 1716 if (dbg) { 1717 loge(stats.toString()); 1718 } 1719 } 1720 } 1721 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1722 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1723 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1724 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1725 } else { 1726 mWifiInfo.updatePacketRates(stats); 1727 } 1728 return stats; 1729 } 1730 1731 void startRadioScanStats() { 1732 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1733 if (stats != null) { 1734 mOnTimeStartScan = stats.on_time; 1735 mTxTimeStartScan = stats.tx_time; 1736 mRxTimeStartScan = stats.rx_time; 1737 mOnTime = stats.on_time; 1738 mTxTime = stats.tx_time; 1739 mRxTime = stats.rx_time; 1740 } 1741 } 1742 1743 void closeRadioScanStats() { 1744 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1745 if (stats != null) { 1746 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1747 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1748 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1749 mOnTimeScan += mOnTimeThisScan; 1750 mTxTimeScan += mTxTimeThisScan; 1751 mRxTimeScan += mRxTimeThisScan; 1752 } 1753 } 1754 1755 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1756 private void noteScanStart(int callingUid, WorkSource workSource) { 1757 long now = System.currentTimeMillis(); 1758 lastStartScanTimeStamp = now; 1759 lastScanDuration = 0; 1760 if (DBG) { 1761 String ts = String.format("[%,d ms]", now); 1762 if (workSource != null) { 1763 loge(ts + " noteScanStart" + workSource.toString() 1764 + " uid " + Integer.toString(callingUid)); 1765 } else { 1766 loge(ts + " noteScanstart no scan source" 1767 + " uid " + Integer.toString(callingUid)); 1768 } 1769 } 1770 startRadioScanStats(); 1771 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1772 && callingUid != SCAN_ALARM_SOURCE) 1773 || workSource != null)) { 1774 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1775 try { 1776 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 1777 } catch (RemoteException e) { 1778 log(e.toString()); 1779 } 1780 } 1781 } 1782 1783 private void noteScanEnd() { 1784 long now = System.currentTimeMillis(); 1785 if (lastStartScanTimeStamp != 0) { 1786 lastScanDuration = now - lastStartScanTimeStamp; 1787 } 1788 lastStartScanTimeStamp = 0; 1789 if (DBG) { 1790 String ts = String.format("[%,d ms]", now); 1791 if (mScanWorkSource != null) 1792 loge(ts + " noteScanEnd " + mScanWorkSource.toString() 1793 + " onTime=" + mOnTimeThisScan); 1794 else 1795 loge(ts + " noteScanEnd no scan source" 1796 + " onTime=" + mOnTimeThisScan); 1797 } 1798 if (mScanWorkSource != null) { 1799 try { 1800 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1801 } catch (RemoteException e) { 1802 log(e.toString()); 1803 } finally { 1804 mScanWorkSource = null; 1805 } 1806 } 1807 } 1808 1809 private void noteBatchedScanStart() { 1810 if (PDBG) loge("noteBatchedScanstart()"); 1811 // note the end of a previous scan set 1812 if (mNotedBatchedScanWorkSource != null && 1813 (mNotedBatchedScanWorkSource.equals(mBatchedScanWorkSource) == false || 1814 mNotedBatchedScanCsph != mBatchedScanCsph)) { 1815 try { 1816 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1817 } catch (RemoteException e) { 1818 log(e.toString()); 1819 } finally { 1820 mNotedBatchedScanWorkSource = null; 1821 mNotedBatchedScanCsph = 0; 1822 } 1823 } 1824 // note the start of the new 1825 try { 1826 mBatteryStats.noteWifiBatchedScanStartedFromSource(mBatchedScanWorkSource, 1827 mBatchedScanCsph); 1828 mNotedBatchedScanWorkSource = mBatchedScanWorkSource; 1829 mNotedBatchedScanCsph = mBatchedScanCsph; 1830 } catch (RemoteException e) { 1831 log(e.toString()); 1832 } 1833 } 1834 1835 private void noteBatchedScanStop() { 1836 if (PDBG) loge("noteBatchedScanstop()"); 1837 1838 if (mNotedBatchedScanWorkSource != null) { 1839 try { 1840 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1841 } catch (RemoteException e) { 1842 log(e.toString()); 1843 } finally { 1844 mNotedBatchedScanWorkSource = null; 1845 mNotedBatchedScanCsph = 0; 1846 } 1847 } 1848 } 1849 1850 private void handleScanRequest(int type, Message message) { 1851 ScanSettings settings = null; 1852 WorkSource workSource = null; 1853 1854 // unbundle parameters 1855 Bundle bundle = (Bundle) message.obj; 1856 1857 if (bundle != null) { 1858 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1859 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1860 } 1861 1862 // parse scan settings 1863 String freqs = null; 1864 if (settings != null && settings.channelSet != null) { 1865 StringBuilder sb = new StringBuilder(); 1866 boolean first = true; 1867 for (WifiChannel channel : settings.channelSet) { 1868 if (!first) sb.append(','); else first = false; 1869 sb.append(channel.freqMHz); 1870 } 1871 freqs = sb.toString(); 1872 } 1873 1874 // call wifi native to start the scan 1875 if (startScanNative(type, freqs)) { 1876 // only count battery consumption if scan request is accepted 1877 noteScanStart(message.arg1, workSource); 1878 // a full scan covers everything, clearing scan request buffer 1879 if (freqs == null) 1880 mBufferedScanMsg.clear(); 1881 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1882 if (workSource != null) { 1883 // External worksource was passed along the scan request, 1884 // hence always send a broadcast 1885 mSendScanResultsBroadcast = true; 1886 } 1887 return; 1888 } 1889 1890 // if reach here, scan request is rejected 1891 1892 if (!mIsScanOngoing) { 1893 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1894 1895 // discard this request and pop up the next one 1896 if (mBufferedScanMsg.size() > 0) { 1897 sendMessage(mBufferedScanMsg.remove()); 1898 } 1899 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 1900 } else if (!mIsFullScanOngoing) { 1901 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 1902 // buffer the scan request to make sure specified channels will be scanned eventually 1903 if (freqs == null) 1904 mBufferedScanMsg.clear(); 1905 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 1906 Message msg = obtainMessage(CMD_START_SCAN, 1907 message.arg1, message.arg2, bundle); 1908 mBufferedScanMsg.add(msg); 1909 } else { 1910 // if too many requests in buffer, combine them into a single full scan 1911 bundle = new Bundle(); 1912 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 1913 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1914 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 1915 mBufferedScanMsg.clear(); 1916 mBufferedScanMsg.add(msg); 1917 } 1918 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 1919 } else { 1920 // mIsScanOngoing and mIsFullScanOngoing 1921 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 1922 } 1923 } 1924 1925 1926 /** return true iff scan request is accepted */ 1927 private boolean startScanNative(int type, String freqs) { 1928 if (mWifiNative.scan(type, freqs)) { 1929 mIsScanOngoing = true; 1930 mIsFullScanOngoing = (freqs == null); 1931 lastScanFreqs = freqs; 1932 return true; 1933 } 1934 return false; 1935 } 1936 1937 /** 1938 * TODO: doc 1939 */ 1940 public void setSupplicantRunning(boolean enable) { 1941 if (enable) { 1942 sendMessage(CMD_START_SUPPLICANT); 1943 } else { 1944 sendMessage(CMD_STOP_SUPPLICANT); 1945 } 1946 } 1947 1948 /** 1949 * TODO: doc 1950 */ 1951 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 1952 if (enable) { 1953 sendMessage(CMD_START_AP, wifiConfig); 1954 } else { 1955 sendMessage(CMD_STOP_AP); 1956 } 1957 } 1958 1959 public void setWifiApConfiguration(WifiConfiguration config) { 1960 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 1961 } 1962 1963 public WifiConfiguration syncGetWifiApConfiguration() { 1964 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 1965 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 1966 resultMsg.recycle(); 1967 return ret; 1968 } 1969 1970 /** 1971 * TODO: doc 1972 */ 1973 public int syncGetWifiState() { 1974 return mWifiState.get(); 1975 } 1976 1977 /** 1978 * TODO: doc 1979 */ 1980 public String syncGetWifiStateByName() { 1981 switch (mWifiState.get()) { 1982 case WIFI_STATE_DISABLING: 1983 return "disabling"; 1984 case WIFI_STATE_DISABLED: 1985 return "disabled"; 1986 case WIFI_STATE_ENABLING: 1987 return "enabling"; 1988 case WIFI_STATE_ENABLED: 1989 return "enabled"; 1990 case WIFI_STATE_UNKNOWN: 1991 return "unknown state"; 1992 default: 1993 return "[invalid state]"; 1994 } 1995 } 1996 1997 /** 1998 * TODO: doc 1999 */ 2000 public int syncGetWifiApState() { 2001 return mWifiApState.get(); 2002 } 2003 2004 /** 2005 * TODO: doc 2006 */ 2007 public String syncGetWifiApStateByName() { 2008 switch (mWifiApState.get()) { 2009 case WIFI_AP_STATE_DISABLING: 2010 return "disabling"; 2011 case WIFI_AP_STATE_DISABLED: 2012 return "disabled"; 2013 case WIFI_AP_STATE_ENABLING: 2014 return "enabling"; 2015 case WIFI_AP_STATE_ENABLED: 2016 return "enabled"; 2017 case WIFI_AP_STATE_FAILED: 2018 return "failed"; 2019 default: 2020 return "[invalid state]"; 2021 } 2022 } 2023 2024 /** 2025 * Get status information for the current connection, if any. 2026 * @return a {@link WifiInfo} object containing information about the current connection 2027 * 2028 */ 2029 public WifiInfo syncRequestConnectionInfo() { 2030 return mWifiInfo; 2031 } 2032 2033 public DhcpResults syncGetDhcpResults() { 2034 synchronized (mDhcpResultsLock) { 2035 return new DhcpResults(mDhcpResults); 2036 } 2037 } 2038 2039 /** 2040 * TODO: doc 2041 */ 2042 public void setDriverStart(boolean enable) { 2043 if (enable) { 2044 sendMessage(CMD_START_DRIVER); 2045 } else { 2046 sendMessage(CMD_STOP_DRIVER); 2047 } 2048 } 2049 2050 /** 2051 * TODO: doc 2052 */ 2053 public void setOperationalMode(int mode) { 2054 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2055 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2056 } 2057 2058 /** 2059 * TODO: doc 2060 */ 2061 public List<ScanResult> syncGetScanResultsList() { 2062 synchronized (mScanResultCache) { 2063 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2064 for(ScanResult result: mScanResults) { 2065 scanList.add(new ScanResult(result)); 2066 } 2067 return scanList; 2068 } 2069 } 2070 2071 /** 2072 * Get unsynchronized pointer to scan result list 2073 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2074 */ 2075 public List<ScanResult> getScanResultsListNoCopyUnsync() { 2076 return mScanResults; 2077 } 2078 2079 /** 2080 * Disconnect from Access Point 2081 */ 2082 public void disconnectCommand() { 2083 sendMessage(CMD_DISCONNECT); 2084 } 2085 2086 /** 2087 * Initiate a reconnection to AP 2088 */ 2089 public void reconnectCommand() { 2090 sendMessage(CMD_RECONNECT); 2091 } 2092 2093 /** 2094 * Initiate a re-association to AP 2095 */ 2096 public void reassociateCommand() { 2097 sendMessage(CMD_REASSOCIATE); 2098 } 2099 2100 /** 2101 * Reload networks and then reconnect; helps load correct data for TLS networks 2102 */ 2103 2104 public void reloadTlsNetworksAndReconnect() { 2105 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2106 } 2107 2108 /** 2109 * Add a network synchronously 2110 * 2111 * @return network id of the new network 2112 */ 2113 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2114 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2115 int result = resultMsg.arg1; 2116 resultMsg.recycle(); 2117 return result; 2118 } 2119 2120 /** 2121 * Get configured networks synchronously 2122 * @param channel 2123 * @return 2124 */ 2125 2126 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2127 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2128 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2129 resultMsg.recycle(); 2130 return result; 2131 } 2132 2133 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2134 Message resultMsg = channel.sendMessageSynchronously( 2135 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2136 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2137 resultMsg.recycle(); 2138 return result; 2139 } 2140 2141 2142 /** 2143 * Get connection statistics synchronously 2144 * @param channel 2145 * @return 2146 */ 2147 2148 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2149 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2150 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2151 resultMsg.recycle(); 2152 return result; 2153 } 2154 2155 /** 2156 * Get adaptors synchronously 2157 */ 2158 2159 public int syncGetSupportedFeatures(AsyncChannel channel) { 2160 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2161 int supportedFeatureSet = resultMsg.arg1; 2162 resultMsg.recycle(); 2163 return supportedFeatureSet; 2164 } 2165 2166 /** 2167 * Get link layers stats for adapter synchronously 2168 */ 2169 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2170 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2171 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2172 resultMsg.recycle(); 2173 return result; 2174 } 2175 2176 /** 2177 * Delete a network 2178 * 2179 * @param networkId id of the network to be removed 2180 */ 2181 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2182 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2183 boolean result = (resultMsg.arg1 != FAILURE); 2184 resultMsg.recycle(); 2185 return result; 2186 } 2187 2188 /** 2189 * Enable a network 2190 * 2191 * @param netId network id of the network 2192 * @param disableOthers true, if all other networks have to be disabled 2193 * @return {@code true} if the operation succeeds, {@code false} otherwise 2194 */ 2195 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2196 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2197 disableOthers ? 1 : 0); 2198 boolean result = (resultMsg.arg1 != FAILURE); 2199 resultMsg.recycle(); 2200 return result; 2201 } 2202 2203 /** 2204 * Disable a network 2205 * 2206 * @param netId network id of the network 2207 * @return {@code true} if the operation succeeds, {@code false} otherwise 2208 */ 2209 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2210 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2211 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2212 resultMsg.recycle(); 2213 return result; 2214 } 2215 2216 /** 2217 * Retrieves a WPS-NFC configuration token for the specified network 2218 * @return a hex string representation of the WPS-NFC configuration token 2219 */ 2220 public String syncGetWpsNfcConfigurationToken(int netId) { 2221 return mWifiNative.getNfcWpsConfigurationToken(netId); 2222 } 2223 2224 void enableBackgroundScan(boolean enable) { 2225 if (enable) { 2226 mWifiConfigStore.enableAllNetworks(); 2227 } 2228 mWifiNative.enableBackgroundScan(enable); 2229 } 2230 2231 /** 2232 * Blacklist a BSSID. This will avoid the AP if there are 2233 * alternate APs to connect 2234 * 2235 * @param bssid BSSID of the network 2236 */ 2237 public void addToBlacklist(String bssid) { 2238 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2239 } 2240 2241 /** 2242 * Clear the blacklist list 2243 * 2244 */ 2245 public void clearBlacklist() { 2246 sendMessage(CMD_CLEAR_BLACKLIST); 2247 } 2248 2249 public void enableRssiPolling(boolean enabled) { 2250 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2251 } 2252 2253 public void enableAllNetworks() { 2254 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2255 } 2256 2257 /** 2258 * Start filtering Multicast v4 packets 2259 */ 2260 public void startFilteringMulticastV4Packets() { 2261 mFilteringMulticastV4Packets.set(true); 2262 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2263 } 2264 2265 /** 2266 * Stop filtering Multicast v4 packets 2267 */ 2268 public void stopFilteringMulticastV4Packets() { 2269 mFilteringMulticastV4Packets.set(false); 2270 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2271 } 2272 2273 /** 2274 * Start filtering Multicast v4 packets 2275 */ 2276 public void startFilteringMulticastV6Packets() { 2277 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2278 } 2279 2280 /** 2281 * Stop filtering Multicast v4 packets 2282 */ 2283 public void stopFilteringMulticastV6Packets() { 2284 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2285 } 2286 2287 /** 2288 * Set high performance mode of operation. 2289 * Enabling would set active power mode and disable suspend optimizations; 2290 * disabling would set auto power mode and enable suspend optimizations 2291 * @param enable true if enable, false otherwise 2292 */ 2293 public void setHighPerfModeEnabled(boolean enable) { 2294 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2295 } 2296 2297 /** 2298 * Set the country code 2299 * @param countryCode following ISO 3166 format 2300 * @param persist {@code true} if the setting should be remembered. 2301 */ 2302 public void setCountryCode(String countryCode, boolean persist) { 2303 // If it's a good country code, apply after the current 2304 // wifi connection is terminated; ignore resetting of code 2305 // for now (it is unclear what the chipset should do when 2306 // country code is reset) 2307 int countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2308 if (TextUtils.isEmpty(countryCode)) { 2309 log("Ignoring resetting of country code"); 2310 } else { 2311 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, countryCode); 2312 } 2313 } 2314 2315 /** 2316 * Set the operational frequency band 2317 * @param band 2318 * @param persist {@code true} if the setting should be remembered. 2319 */ 2320 public void setFrequencyBand(int band, boolean persist) { 2321 if (persist) { 2322 Settings.Global.putInt(mContext.getContentResolver(), 2323 Settings.Global.WIFI_FREQUENCY_BAND, 2324 band); 2325 } 2326 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2327 } 2328 2329 /** 2330 * Enable TDLS for a specific MAC address 2331 */ 2332 public void enableTdls(String remoteMacAddress, boolean enable) { 2333 int enabler = enable ? 1 : 0; 2334 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2335 } 2336 2337 /** 2338 * Returns the operational frequency band 2339 */ 2340 public int getFrequencyBand() { 2341 return mFrequencyBand.get(); 2342 } 2343 2344 /** 2345 * Returns the wifi configuration file 2346 */ 2347 public String getConfigFile() { 2348 return mWifiConfigStore.getConfigFile(); 2349 } 2350 2351 /** 2352 * Send a message indicating bluetooth adapter connection state changed 2353 */ 2354 public void sendBluetoothAdapterStateChange(int state) { 2355 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2356 } 2357 2358 /** 2359 * Save configuration on supplicant 2360 * 2361 * @return {@code true} if the operation succeeds, {@code false} otherwise 2362 * 2363 * TODO: deprecate this 2364 */ 2365 public boolean syncSaveConfig(AsyncChannel channel) { 2366 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2367 boolean result = (resultMsg.arg1 != FAILURE); 2368 resultMsg.recycle(); 2369 return result; 2370 } 2371 2372 public void updateBatteryWorkSource(WorkSource newSource) { 2373 synchronized (mRunningWifiUids) { 2374 try { 2375 if (newSource != null) { 2376 mRunningWifiUids.set(newSource); 2377 } 2378 if (mIsRunning) { 2379 if (mReportedRunning) { 2380 // If the work source has changed since last time, need 2381 // to remove old work from battery stats. 2382 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2383 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2384 mRunningWifiUids); 2385 mLastRunningWifiUids.set(mRunningWifiUids); 2386 } 2387 } else { 2388 // Now being started, report it. 2389 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2390 mLastRunningWifiUids.set(mRunningWifiUids); 2391 mReportedRunning = true; 2392 } 2393 } else { 2394 if (mReportedRunning) { 2395 // Last reported we were running, time to stop. 2396 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2397 mLastRunningWifiUids.clear(); 2398 mReportedRunning = false; 2399 } 2400 } 2401 mWakeLock.setWorkSource(newSource); 2402 } catch (RemoteException ignore) { 2403 } 2404 } 2405 } 2406 2407 @Override 2408 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2409 super.dump(fd, pw, args); 2410 mSupplicantStateTracker.dump(fd, pw, args); 2411 pw.println("mLinkProperties " + mLinkProperties); 2412 pw.println("mWifiInfo " + mWifiInfo); 2413 pw.println("mDhcpResults " + mDhcpResults); 2414 pw.println("mNetworkInfo " + mNetworkInfo); 2415 pw.println("mLastSignalLevel " + mLastSignalLevel); 2416 pw.println("mLastBssid " + mLastBssid); 2417 pw.println("mLastNetworkId " + mLastNetworkId); 2418 pw.println("mOperationalMode " + mOperationalMode); 2419 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2420 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2421 pw.println("Supplicant status " + mWifiNative.status(true)); 2422 pw.println("mEnableBackgroundScan " + mEnableBackgroundScan); 2423 pw.println("mLastSetCountryCode " + mLastSetCountryCode); 2424 pw.println("mPersistedCountryCode " + mPersistedCountryCode); 2425 mNetworkFactory.dump(fd, pw, args); 2426 pw.println(); 2427 mWifiConfigStore.dump(fd, pw, args); 2428 } 2429 2430 /********************************************************* 2431 * Internal private functions 2432 ********************************************************/ 2433 2434 private void logStateAndMessage(Message message, String state) { 2435 messageHandlingStatus = 0; 2436 if (mLogMessages) { 2437 //long now = SystemClock.elapsedRealtimeNanos(); 2438 //String ts = String.format("[%,d us]", now/1000); 2439 2440 loge( " " + state + " " + getLogRecString(message)); 2441 } 2442 } 2443 2444 /** 2445 * helper, prints the milli time since boot wi and w/o suspended time 2446 */ 2447 String printTime() { 2448 StringBuilder sb = new StringBuilder(); 2449 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2450 sb.append("/").append(SystemClock.elapsedRealtime()); 2451 return sb.toString(); 2452 } 2453 2454 /** 2455 * Return the additional string to be logged by LogRec, default 2456 * 2457 * @param msg that was processed 2458 * @return information to be logged as a String 2459 */ 2460 protected String getLogRecString(Message msg) { 2461 WifiConfiguration config; 2462 Long now; 2463 String report; 2464 String key; 2465 StringBuilder sb = new StringBuilder(); 2466 if (mScreenOn) { 2467 sb.append("!"); 2468 } 2469 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2470 sb.append("(").append(messageHandlingStatus).append(")"); 2471 } 2472 sb.append(smToString(msg)); 2473 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2474 sb.append(" uid=" + msg.sendingUid); 2475 } 2476 switch (msg.what) { 2477 case CMD_START_SCAN: 2478 now = System.currentTimeMillis(); 2479 sb.append(" "); 2480 sb.append(Integer.toString(msg.arg1)); 2481 sb.append(" "); 2482 sb.append(Integer.toString(msg.arg2)); 2483 sb.append(" ic="); 2484 sb.append(Integer.toString(sScanAlarmIntentCount)); 2485 if (msg.obj != null) { 2486 Bundle bundle = (Bundle)msg.obj; 2487 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2488 if (request != 0) { 2489 sb.append(" proc(ms):").append(now - request); 2490 } 2491 } 2492 if (mIsScanOngoing) sb.append(" onGoing"); 2493 if (mIsFullScanOngoing) sb.append(" full"); 2494 if (lastStartScanTimeStamp != 0) { 2495 sb.append(" started:").append(lastStartScanTimeStamp); 2496 sb.append(",").append(now - lastStartScanTimeStamp); 2497 } 2498 if (lastScanDuration != 0) { 2499 sb.append(" dur:").append(lastScanDuration); 2500 } 2501 sb.append(" cnt=").append(mDelayedScanCounter); 2502 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2503 sb.append(" f=").append(mWifiInfo.getFrequency()); 2504 sb.append(" sc=").append(mWifiInfo.score); 2505 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2506 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2507 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2508 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2509 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2510 if (lastScanFreqs != null) { 2511 sb.append(" list=").append(lastScanFreqs); 2512 } else { 2513 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2514 } 2515 report = reportOnTime(); 2516 if (report != null) { 2517 sb.append(" ").append(report); 2518 } 2519 break; 2520 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2521 sb.append(" "); 2522 sb.append(Integer.toString(msg.arg1)); 2523 sb.append(" "); 2524 sb.append(Integer.toString(msg.arg2)); 2525 sb.append(printTime()); 2526 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2527 if (stateChangeResult != null) { 2528 sb.append(stateChangeResult.toString()); 2529 } 2530 break; 2531 case WifiManager.SAVE_NETWORK: 2532 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2533 sb.append(" "); 2534 sb.append(Integer.toString(msg.arg1)); 2535 sb.append(" "); 2536 sb.append(Integer.toString(msg.arg2)); 2537 if (lastSavedConfigurationAttempt != null) { 2538 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2539 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2540 if (lastSavedConfigurationAttempt.hiddenSSID) { 2541 sb.append(" hidden"); 2542 } 2543 if (lastSavedConfigurationAttempt.preSharedKey != null 2544 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2545 sb.append(" hasPSK"); 2546 } 2547 if (lastSavedConfigurationAttempt.ephemeral) { 2548 sb.append(" ephemeral"); 2549 } 2550 if (lastSavedConfigurationAttempt.selfAdded) { 2551 sb.append(" selfAdded"); 2552 } 2553 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2554 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2555 } 2556 break; 2557 case WifiManager.FORGET_NETWORK: 2558 sb.append(" "); 2559 sb.append(Integer.toString(msg.arg1)); 2560 sb.append(" "); 2561 sb.append(Integer.toString(msg.arg2)); 2562 if (lastForgetConfigurationAttempt != null) { 2563 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2564 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2565 if (lastForgetConfigurationAttempt.hiddenSSID) { 2566 sb.append(" hidden"); 2567 } 2568 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2569 sb.append(" hasPSK"); 2570 } 2571 if (lastForgetConfigurationAttempt.ephemeral) { 2572 sb.append(" ephemeral"); 2573 } 2574 if (lastForgetConfigurationAttempt.selfAdded) { 2575 sb.append(" selfAdded"); 2576 } 2577 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2578 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2579 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2580 } 2581 break; 2582 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2583 sb.append(" "); 2584 sb.append(Integer.toString(msg.arg1)); 2585 sb.append(" "); 2586 sb.append(Integer.toString(msg.arg2)); 2587 String bssid = (String)msg.obj; 2588 if (bssid != null && bssid.length()>0) { 2589 sb.append(" "); 2590 sb.append(bssid); 2591 } 2592 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2593 sb.append(printTime()); 2594 break; 2595 case WifiMonitor.SCAN_RESULTS_EVENT: 2596 sb.append(" "); 2597 sb.append(Integer.toString(msg.arg1)); 2598 sb.append(" "); 2599 sb.append(Integer.toString(msg.arg2)); 2600 if (mScanResults != null) { 2601 sb.append(" found="); 2602 sb.append(mScanResults.size()); 2603 } 2604 sb.append(" known=").append(mNumScanResultsKnown); 2605 sb.append(" got=").append(mNumScanResultsReturned); 2606 if (lastScanDuration != 0) { 2607 sb.append(" dur:").append(lastScanDuration); 2608 } 2609 if (mOnTime != 0) { 2610 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2611 sb.append(",").append(mOnTime); 2612 } 2613 if (mTxTime != 0) { 2614 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2615 sb.append(",").append(mTxTime); 2616 } 2617 if (mRxTime != 0) { 2618 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2619 sb.append(",").append(mRxTime); 2620 } 2621 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2622 sb.append(String.format(" con=%d", mConnectionRequests)); 2623 key = mWifiConfigStore.getLastSelectedConfiguration(); 2624 if (key != null) { 2625 sb.append(" last=").append(key); 2626 } 2627 break; 2628 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2629 sb.append(" "); 2630 sb.append(Integer.toString(msg.arg1)); 2631 sb.append(" "); 2632 sb.append(Integer.toString(msg.arg2)); 2633 sb.append(" ").append(mLastBssid); 2634 sb.append(" nid=").append(mLastNetworkId); 2635 config = getCurrentWifiConfiguration(); 2636 if (config != null) { 2637 sb.append(" ").append(config.configKey()); 2638 } 2639 sb.append(printTime()); 2640 key = mWifiConfigStore.getLastSelectedConfiguration(); 2641 if (key != null) { 2642 sb.append(" last=").append(key); 2643 } 2644 break; 2645 case CMD_TARGET_BSSID: 2646 case CMD_ASSOCIATED_BSSID: 2647 sb.append(" "); 2648 sb.append(Integer.toString(msg.arg1)); 2649 sb.append(" "); 2650 sb.append(Integer.toString(msg.arg2)); 2651 if (msg.obj != null) { 2652 sb.append(" BSSID=").append((String)msg.obj); 2653 } 2654 if (mTargetRoamBSSID != null) { 2655 sb.append(" Target=").append(mTargetRoamBSSID); 2656 } 2657 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2658 sb.append(printTime()); 2659 break; 2660 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2661 if (msg.obj != null) { 2662 sb.append(" ").append((String)msg.obj); 2663 } 2664 sb.append(" nid=").append(msg.arg1); 2665 sb.append(" reason=").append(msg.arg2); 2666 if (mLastBssid != null) { 2667 sb.append(" lastbssid=").append(mLastBssid); 2668 } 2669 if (mWifiInfo.getFrequency() != -1) { 2670 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2671 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2672 } 2673 if (linkDebouncing) { 2674 sb.append(" debounce"); 2675 } 2676 sb.append(printTime()); 2677 break; 2678 case WifiMonitor.SSID_TEMP_DISABLED: 2679 case WifiMonitor.SSID_REENABLED: 2680 sb.append(" nid=").append(msg.arg1); 2681 if (msg.obj != null) { 2682 sb.append(" ").append((String)msg.obj); 2683 } 2684 config = getCurrentWifiConfiguration(); 2685 if (config != null) { 2686 sb.append(" cur=").append(config.configKey()); 2687 sb.append(" ajst=").append(config.autoJoinStatus); 2688 if (config.selfAdded) { 2689 sb.append(" selfAdded"); 2690 } 2691 if (config.status != 0) { 2692 sb.append(" st=").append(config.status); 2693 sb.append(" rs=").append(config.disableReason); 2694 } 2695 if (config.lastConnected != 0) { 2696 now = System.currentTimeMillis(); 2697 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2698 } 2699 if (mLastBssid != null) { 2700 sb.append(" lastbssid=").append(mLastBssid); 2701 } 2702 if (mWifiInfo.getFrequency() != -1) { 2703 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2704 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2705 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2706 } 2707 } 2708 sb.append(printTime()); 2709 break; 2710 case CMD_RSSI_POLL: 2711 case CMD_UNWANTED_NETWORK: 2712 case WifiManager.RSSI_PKTCNT_FETCH: 2713 sb.append(" "); 2714 sb.append(Integer.toString(msg.arg1)); 2715 sb.append(" "); 2716 sb.append(Integer.toString(msg.arg2)); 2717 if (mWifiInfo.getSSID() != null) 2718 if (mWifiInfo.getSSID() != null) 2719 sb.append(" ").append(mWifiInfo.getSSID()); 2720 if (mWifiInfo.getBSSID() != null) 2721 sb.append(" ").append(mWifiInfo.getBSSID()); 2722 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2723 sb.append(" f=").append(mWifiInfo.getFrequency()); 2724 sb.append(" sc=").append(mWifiInfo.score); 2725 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2726 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2727 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2728 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2729 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2730 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2731 report = reportOnTime(); 2732 if (report != null) { 2733 sb.append(" ").append(report); 2734 } 2735 if (wifiScoringReport != null) { 2736 sb.append(wifiScoringReport); 2737 } 2738 break; 2739 case CMD_AUTO_CONNECT: 2740 case WifiManager.CONNECT_NETWORK: 2741 sb.append(" "); 2742 sb.append(Integer.toString(msg.arg1)); 2743 sb.append(" "); 2744 sb.append(Integer.toString(msg.arg2)); 2745 config = (WifiConfiguration) msg.obj; 2746 if (config != null) { 2747 sb.append(" ").append(config.configKey()); 2748 if (config.visibility != null) { 2749 sb.append(" [").append(config.visibility.num24); 2750 sb.append(" ,").append(config.visibility.rssi24); 2751 sb.append(" ;").append(config.visibility.num5); 2752 sb.append(" ,").append(config.visibility.rssi5).append("]"); 2753 } 2754 } 2755 if (mTargetRoamBSSID != null) { 2756 sb.append(" ").append(mTargetRoamBSSID); 2757 } 2758 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2759 sb.append(printTime()); 2760 config = getCurrentWifiConfiguration(); 2761 if (config != null) { 2762 sb.append(" ").append(config.configKey()); 2763 if (config.visibility != null) { 2764 sb.append(" [").append(config.visibility.num24); 2765 sb.append(" ,").append(config.visibility.rssi24); 2766 sb.append(" ;").append(config.visibility.num5); 2767 sb.append(" ,").append(config.visibility.rssi5).append("]"); 2768 } 2769 } 2770 break; 2771 case CMD_AUTO_ROAM: 2772 sb.append(" "); 2773 sb.append(Integer.toString(msg.arg1)); 2774 sb.append(" "); 2775 sb.append(Integer.toString(msg.arg2)); 2776 ScanResult result = (ScanResult)msg.obj; 2777 if (result != null) { 2778 now = System.currentTimeMillis(); 2779 sb.append(" bssid=").append(result.BSSID); 2780 sb.append(" rssi=").append(result.level); 2781 sb.append(" freq=").append(result.frequency); 2782 if (result.seen > 0 && result.seen < now) { 2783 sb.append(" seen=").append(now - result.seen); 2784 } else { 2785 // Somehow the timestamp for this scan result is inconsistent 2786 sb.append(" !seen=").append(result.seen); 2787 } 2788 } 2789 if (mTargetRoamBSSID != null) { 2790 sb.append(" ").append(mTargetRoamBSSID); 2791 } 2792 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2793 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 2794 sb.append(printTime()); 2795 break; 2796 case CMD_ADD_OR_UPDATE_NETWORK: 2797 sb.append(" "); 2798 sb.append(Integer.toString(msg.arg1)); 2799 sb.append(" "); 2800 sb.append(Integer.toString(msg.arg2)); 2801 if (msg.obj != null) { 2802 config = (WifiConfiguration)msg.obj; 2803 sb.append(" ").append(config.configKey()); 2804 sb.append(" prio=").append(config.priority); 2805 sb.append(" status=").append(config.status); 2806 if (config.BSSID != null) { 2807 sb.append(" ").append(config.BSSID); 2808 } 2809 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 2810 if (curConfig != null) { 2811 if (curConfig.configKey().equals(config.configKey())) { 2812 sb.append(" is current"); 2813 } else { 2814 sb.append(" current=").append(curConfig.configKey()); 2815 sb.append(" prio=").append(curConfig.priority); 2816 sb.append(" status=").append(curConfig.status); 2817 } 2818 } 2819 } 2820 break; 2821 case WifiManager.DISABLE_NETWORK: 2822 case CMD_ENABLE_NETWORK: 2823 sb.append(" "); 2824 sb.append(Integer.toString(msg.arg1)); 2825 sb.append(" "); 2826 sb.append(Integer.toString(msg.arg2)); 2827 key = mWifiConfigStore.getLastSelectedConfiguration(); 2828 if (key != null) { 2829 sb.append(" last=").append(key); 2830 } 2831 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 2832 if (config != null && (key == null || !config.configKey().equals(key))) { 2833 sb.append(" target=").append(key); 2834 } 2835 break; 2836 case CMD_GET_CONFIGURED_NETWORKS: 2837 sb.append(" "); 2838 sb.append(Integer.toString(msg.arg1)); 2839 sb.append(" "); 2840 sb.append(Integer.toString(msg.arg2)); 2841 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 2842 break; 2843 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 2844 sb.append(" "); 2845 sb.append(Integer.toString(msg.arg1)); 2846 sb.append(" "); 2847 sb.append(Integer.toString(msg.arg2)); 2848 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2849 sb.append(",").append(mWifiInfo.txBad); 2850 sb.append(",").append(mWifiInfo.txRetries); 2851 break; 2852 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 2853 sb.append(" "); 2854 sb.append(Integer.toString(msg.arg1)); 2855 sb.append(" "); 2856 sb.append(Integer.toString(msg.arg2)); 2857 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 2858 sb.append(" OK "); 2859 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 2860 sb.append(" FAIL "); 2861 } 2862 if (mLinkProperties != null) { 2863 if (mLinkProperties.hasIPv4Address()) { 2864 sb.append(" v4"); 2865 } 2866 if (mLinkProperties.hasGlobalIPv6Address()) { 2867 sb.append(" v6"); 2868 } 2869 if (mLinkProperties.hasIPv4DefaultRoute()) { 2870 sb.append(" v4r"); 2871 } 2872 if (mLinkProperties.hasIPv6DefaultRoute()) { 2873 sb.append(" v6r"); 2874 } 2875 if (mLinkProperties.hasIPv4DnsServer()) { 2876 sb.append(" v4dns"); 2877 } 2878 if (mLinkProperties.hasIPv6DnsServer()) { 2879 sb.append(" v6dns"); 2880 } 2881 } 2882 break; 2883 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 2884 sb.append(" "); 2885 sb.append(Integer.toString(msg.arg1)); 2886 sb.append(" "); 2887 sb.append(Integer.toString(msg.arg2)); 2888 if (msg.obj != null) { 2889 NetworkInfo info = (NetworkInfo)msg.obj; 2890 NetworkInfo.State state = info.getState(); 2891 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 2892 if (state != null) { 2893 sb.append(" st=").append(state); 2894 } 2895 if (detailedState != null) { 2896 sb.append("/").append(detailedState); 2897 } 2898 } 2899 break; 2900 case CMD_IP_CONFIGURATION_LOST: 2901 int count = -1; 2902 WifiConfiguration c = getCurrentWifiConfiguration(); 2903 if (c != null) count = c.numIpConfigFailures; 2904 sb.append(" "); 2905 sb.append(Integer.toString(msg.arg1)); 2906 sb.append(" "); 2907 sb.append(Integer.toString(msg.arg2)); 2908 sb.append(" failures: "); 2909 sb.append(Integer.toString(count)); 2910 sb.append("/"); 2911 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 2912 if (mWifiInfo.getBSSID() != null) { 2913 sb.append(" ").append(mWifiInfo.getBSSID()); 2914 } 2915 if (c != null) { 2916 if (c.scanResultCache != null) { 2917 for (ScanResult r : c.scanResultCache.values()) { 2918 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 2919 sb.append(" ipfail=").append(r.numIpConfigFailures); 2920 sb.append(",st=").append(r.autoJoinStatus); 2921 } 2922 } 2923 } 2924 sb.append(" -> ajst=").append(c.autoJoinStatus); 2925 sb.append(" ").append(c.disableReason); 2926 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2927 sb.append(",").append(mWifiInfo.txBad); 2928 sb.append(",").append(mWifiInfo.txRetries); 2929 } 2930 sb.append(printTime()); 2931 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2932 break; 2933 case CMD_UPDATE_LINKPROPERTIES: 2934 sb.append(" "); 2935 sb.append(Integer.toString(msg.arg1)); 2936 sb.append(" "); 2937 sb.append(Integer.toString(msg.arg2)); 2938 if (mLinkProperties != null) { 2939 if (mLinkProperties.hasIPv4Address()) { 2940 sb.append(" v4"); 2941 } 2942 if (mLinkProperties.hasGlobalIPv6Address()) { 2943 sb.append(" v6"); 2944 } 2945 if (mLinkProperties.hasIPv4DefaultRoute()) { 2946 sb.append(" v4r"); 2947 } 2948 if (mLinkProperties.hasIPv6DefaultRoute()) { 2949 sb.append(" v6r"); 2950 } 2951 if (mLinkProperties.hasIPv4DnsServer()) { 2952 sb.append(" v4dns"); 2953 } 2954 if (mLinkProperties.hasIPv6DnsServer()) { 2955 sb.append(" v6dns"); 2956 } 2957 } 2958 break; 2959 case CMD_SET_COUNTRY_CODE: 2960 sb.append(" "); 2961 sb.append(Integer.toString(msg.arg1)); 2962 sb.append(" "); 2963 sb.append(Integer.toString(msg.arg2)); 2964 if (msg.obj != null) { 2965 sb.append(" ").append((String)msg.obj); 2966 } 2967 break; 2968 case CMD_ROAM_WATCHDOG_TIMER: 2969 sb.append(" "); 2970 sb.append(Integer.toString(msg.arg1)); 2971 sb.append(" "); 2972 sb.append(Integer.toString(msg.arg2)); 2973 sb.append(" cur=").append(roamWatchdogCount); 2974 break; 2975 case CMD_DISCONNECTING_WATCHDOG_TIMER: 2976 sb.append(" "); 2977 sb.append(Integer.toString(msg.arg1)); 2978 sb.append(" "); 2979 sb.append(Integer.toString(msg.arg2)); 2980 sb.append(" cur=").append(disconnectingWatchdogCount); 2981 break; 2982 default: 2983 sb.append(" "); 2984 sb.append(Integer.toString(msg.arg1)); 2985 sb.append(" "); 2986 sb.append(Integer.toString(msg.arg2)); 2987 break; 2988 } 2989 2990 return sb.toString(); 2991 } 2992 2993 private void handleScreenStateChanged(boolean screenOn, boolean startBackgroundScanIfNeeded) { 2994 mScreenOn = screenOn; 2995 if (PDBG) { 2996 loge(" handleScreenStateChanged Enter: screenOn=" + screenOn 2997 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 2998 + " state " + getCurrentState().getName() 2999 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3000 } 3001 enableRssiPolling(screenOn); 3002 if (screenOn) enableAllNetworks(); 3003 if (mUserWantsSuspendOpt.get()) { 3004 if (screenOn) { 3005 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3006 } else { 3007 // Allow 2s for suspend optimizations to be set 3008 mSuspendWakeLock.acquire(2000); 3009 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3010 } 3011 } 3012 mScreenBroadcastReceived.set(true); 3013 3014 getWifiLinkLayerStats(false); 3015 mOnTimeScreenStateChange = mOnTime; 3016 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3017 mEnableBackgroundScan = false; 3018 cancelDelayedScan(); 3019 3020 if (screenOn) { 3021 setScanAlarm(false); 3022 clearBlacklist(); 3023 3024 fullBandConnectedTimeIntervalMilli = mWifiConfigStore.associatedPartialScanPeriodMilli; 3025 // In either Disconnectedstate or ConnectedState, 3026 // start the scan alarm so as to enable autojoin 3027 if (getCurrentState() == mConnectedState 3028 && mWifiConfigStore.enableAutoJoinScanWhenAssociated) { 3029 // Scan after 500ms 3030 startDelayedScan(500, null, null); 3031 } else if (getCurrentState() == mDisconnectedState) { 3032 // Scan after 200ms 3033 startDelayedScan(200, null, null); 3034 } 3035 } else if (startBackgroundScanIfNeeded) { 3036 // Screen Off and Disconnected and chipset doesn't support scan offload 3037 // => start scan alarm 3038 // Screen Off and Disconnected and chipset does support scan offload 3039 // => will use scan offload (i.e. background scan) 3040 if (!mBackgroundScanSupported) { 3041 setScanAlarm(true); 3042 } else { 3043 mEnableBackgroundScan = true; 3044 } 3045 } 3046 if (DBG) logd("backgroundScan enabled=" + mEnableBackgroundScan 3047 + " startBackgroundScanIfNeeded:" + startBackgroundScanIfNeeded); 3048 if (startBackgroundScanIfNeeded) { 3049 // to scan for them in background, we need all networks enabled 3050 enableBackgroundScan(mEnableBackgroundScan); 3051 } 3052 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3053 } 3054 3055 private void checkAndSetConnectivityInstance() { 3056 if (mCm == null) { 3057 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3058 } 3059 } 3060 3061 private boolean startTethering(ArrayList<String> available) { 3062 3063 boolean wifiAvailable = false; 3064 3065 checkAndSetConnectivityInstance(); 3066 3067 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3068 3069 for (String intf : available) { 3070 for (String regex : wifiRegexs) { 3071 if (intf.matches(regex)) { 3072 3073 InterfaceConfiguration ifcg = null; 3074 try { 3075 ifcg = mNwService.getInterfaceConfig(intf); 3076 if (ifcg != null) { 3077 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3078 ifcg.setLinkAddress(new LinkAddress( 3079 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3080 ifcg.setInterfaceUp(); 3081 3082 mNwService.setInterfaceConfig(intf, ifcg); 3083 } 3084 } catch (Exception e) { 3085 loge("Error configuring interface " + intf + ", :" + e); 3086 return false; 3087 } 3088 3089 if(mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3090 loge("Error tethering on " + intf); 3091 return false; 3092 } 3093 mTetherInterfaceName = intf; 3094 return true; 3095 } 3096 } 3097 } 3098 // We found no interfaces to tether 3099 return false; 3100 } 3101 3102 private void stopTethering() { 3103 3104 checkAndSetConnectivityInstance(); 3105 3106 /* Clear the interface config to allow dhcp correctly configure new 3107 ip settings */ 3108 InterfaceConfiguration ifcg = null; 3109 try { 3110 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3111 if (ifcg != null) { 3112 ifcg.setLinkAddress( 3113 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3114 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3115 } 3116 } catch (Exception e) { 3117 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3118 } 3119 3120 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3121 loge("Untether initiate failed!"); 3122 } 3123 } 3124 3125 private boolean isWifiTethered(ArrayList<String> active) { 3126 3127 checkAndSetConnectivityInstance(); 3128 3129 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3130 for (String intf : active) { 3131 for (String regex : wifiRegexs) { 3132 if (intf.matches(regex)) { 3133 return true; 3134 } 3135 } 3136 } 3137 // We found no interfaces that are tethered 3138 return false; 3139 } 3140 3141 /** 3142 * Set the country code from the system setting value, if any. 3143 */ 3144 private void setCountryCode() { 3145 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 3146 Settings.Global.WIFI_COUNTRY_CODE); 3147 if (countryCode != null && !countryCode.isEmpty()) { 3148 setCountryCode(countryCode, false); 3149 } else { 3150 //use driver default 3151 } 3152 } 3153 3154 /** 3155 * Set the frequency band from the system setting value, if any. 3156 */ 3157 private void setFrequencyBand() { 3158 int band = Settings.Global.getInt(mContext.getContentResolver(), 3159 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3160 setFrequencyBand(band, false); 3161 } 3162 3163 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3164 if (DBG) { 3165 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3166 + " -want " + mUserWantsSuspendOpt.get() 3167 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3168 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 3169 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 3170 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 3171 } 3172 //mWifiNative.setSuspendOptimizations(enabled); 3173 3174 if (enabled) { 3175 mSuspendOptNeedsDisabled &= ~reason; 3176 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3177 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3178 if (DBG) { 3179 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3180 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3181 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 3182 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 3183 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 3184 } 3185 mWifiNative.setSuspendOptimizations(true); 3186 } 3187 } else { 3188 mSuspendOptNeedsDisabled |= reason; 3189 mWifiNative.setSuspendOptimizations(false); 3190 } 3191 } 3192 3193 private void setSuspendOptimizations(int reason, boolean enabled) { 3194 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3195 if (enabled) { 3196 mSuspendOptNeedsDisabled &= ~reason; 3197 } else { 3198 mSuspendOptNeedsDisabled |= reason; 3199 } 3200 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3201 } 3202 3203 private void setWifiState(int wifiState) { 3204 final int previousWifiState = mWifiState.get(); 3205 3206 try { 3207 if (wifiState == WIFI_STATE_ENABLED) { 3208 mBatteryStats.noteWifiOn(); 3209 } else if (wifiState == WIFI_STATE_DISABLED) { 3210 mBatteryStats.noteWifiOff(); 3211 } 3212 } catch (RemoteException e) { 3213 loge("Failed to note battery stats in wifi"); 3214 } 3215 3216 mWifiState.set(wifiState); 3217 3218 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3219 3220 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3221 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3222 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3223 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3224 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3225 } 3226 3227 private void setWifiApState(int wifiApState) { 3228 final int previousWifiApState = mWifiApState.get(); 3229 3230 try { 3231 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3232 mBatteryStats.noteWifiOn(); 3233 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3234 mBatteryStats.noteWifiOff(); 3235 } 3236 } catch (RemoteException e) { 3237 loge("Failed to note battery stats in wifi"); 3238 } 3239 3240 // Update state 3241 mWifiApState.set(wifiApState); 3242 3243 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3244 3245 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3246 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3247 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3248 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3249 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3250 } 3251 3252 /* 3253 void ageOutScanResults(int age) { 3254 synchronized(mScanResultCache) { 3255 // Trim mScanResults, which prevent WifiStateMachine to return 3256 // obsolete scan results to queriers 3257 long now = System.CurrentTimeMillis(); 3258 for (int i = 0; i < mScanResults.size(); i++) { 3259 ScanResult result = mScanResults.get(i); 3260 if ((result.seen > now || (now - result.seen) > age)) { 3261 mScanResults.remove(i); 3262 } 3263 } 3264 } 3265 }*/ 3266 3267 private static final String ID_STR = "id="; 3268 private static final String BSSID_STR = "bssid="; 3269 private static final String FREQ_STR = "freq="; 3270 private static final String LEVEL_STR = "level="; 3271 private static final String TSF_STR = "tsf="; 3272 private static final String FLAGS_STR = "flags="; 3273 private static final String SSID_STR = "ssid="; 3274 private static final String DELIMITER_STR = "===="; 3275 private static final String END_STR = "####"; 3276 3277 int emptyScanResultCount = 0; 3278 3279 /** 3280 * Format: 3281 * 3282 * id=1 3283 * bssid=68:7f:76:d7:1a:6e 3284 * freq=2412 3285 * level=-44 3286 * tsf=1344626243700342 3287 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3288 * ssid=zfdy 3289 * ==== 3290 * id=2 3291 * bssid=68:5f:74:d7:1a:6f 3292 * freq=5180 3293 * level=-73 3294 * tsf=1344626243700373 3295 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3296 * ssid=zuby 3297 * ==== 3298 */ 3299 private void setScanResults() { 3300 mNumScanResultsKnown = 0; 3301 mNumScanResultsReturned = 0; 3302 String bssid = ""; 3303 int level = 0; 3304 int freq = 0; 3305 long tsf = 0; 3306 String flags = ""; 3307 WifiSsid wifiSsid = null; 3308 String scanResults; 3309 String tmpResults; 3310 StringBuffer scanResultsBuf = new StringBuffer(); 3311 int sid = 0; 3312 3313 while (true) { 3314 tmpResults = mWifiNative.scanResults(sid); 3315 if (TextUtils.isEmpty(tmpResults)) break; 3316 scanResultsBuf.append(tmpResults); 3317 scanResultsBuf.append("\n"); 3318 String[] lines = tmpResults.split("\n"); 3319 sid = -1; 3320 for (int i=lines.length - 1; i >= 0; i--) { 3321 if (lines[i].startsWith(END_STR)) { 3322 break; 3323 } else if (lines[i].startsWith(ID_STR)) { 3324 try { 3325 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3326 } catch (NumberFormatException e) { 3327 // Nothing to do 3328 } 3329 break; 3330 } 3331 } 3332 if (sid == -1) break; 3333 } 3334 3335 // Age out scan results, we return all scan results found in the last 12 seconds, 3336 // and NOT all scan results since last scan. 3337 // ageOutScanResults(12000); 3338 3339 scanResults = scanResultsBuf.toString(); 3340 if (TextUtils.isEmpty(scanResults)) { 3341 emptyScanResultCount++; 3342 if (emptyScanResultCount > 10) { 3343 // If we got too many empty scan results, the current scan cache is stale, 3344 // hence clear it. 3345 mScanResults = new ArrayList<ScanResult>(); 3346 } 3347 return; 3348 } 3349 3350 emptyScanResultCount = 0; 3351 3352 // note that all these splits and substrings keep references to the original 3353 // huge string buffer while the amount we really want is generally pretty small 3354 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3355 synchronized(mScanResultCache) { 3356 mScanResults = new ArrayList<ScanResult>(); 3357 String[] lines = scanResults.split("\n"); 3358 final int bssidStrLen = BSSID_STR.length(); 3359 final int flagLen = FLAGS_STR.length(); 3360 3361 for (String line : lines) { 3362 if (line.startsWith(BSSID_STR)) { 3363 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3364 } else if (line.startsWith(FREQ_STR)) { 3365 try { 3366 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3367 } catch (NumberFormatException e) { 3368 freq = 0; 3369 } 3370 } else if (line.startsWith(LEVEL_STR)) { 3371 try { 3372 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3373 /* some implementations avoid negative values by adding 256 3374 * so we need to adjust for that here. 3375 */ 3376 if (level > 0) level -= 256; 3377 } catch(NumberFormatException e) { 3378 level = 0; 3379 } 3380 } else if (line.startsWith(TSF_STR)) { 3381 try { 3382 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3383 } catch (NumberFormatException e) { 3384 tsf = 0; 3385 } 3386 } else if (line.startsWith(FLAGS_STR)) { 3387 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3388 } else if (line.startsWith(SSID_STR)) { 3389 wifiSsid = WifiSsid.createFromAsciiEncoded( 3390 line.substring(SSID_STR.length())); 3391 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3392 if (bssid != null) { 3393 String ssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3394 String key = bssid + ssid; 3395 ScanResult scanResult = mScanResultCache.get(key); 3396 if (scanResult != null) { 3397 // TODO: average the RSSI, instead of overwriting it 3398 scanResult.level = level; 3399 scanResult.wifiSsid = wifiSsid; 3400 // Keep existing API 3401 scanResult.SSID = (wifiSsid != null) ? wifiSsid.toString() : 3402 WifiSsid.NONE; 3403 scanResult.capabilities = flags; 3404 scanResult.frequency = freq; 3405 scanResult.timestamp = tsf; 3406 scanResult.seen = System.currentTimeMillis(); 3407 } else { 3408 scanResult = 3409 new ScanResult( 3410 wifiSsid, bssid, flags, level, freq, tsf); 3411 scanResult.seen = System.currentTimeMillis(); 3412 mScanResultCache.put(key, scanResult); 3413 } 3414 mNumScanResultsReturned ++; // Keep track of how many scan results we got 3415 // as part of this scan's processing 3416 mScanResults.add(scanResult); 3417 } 3418 bssid = null; 3419 level = 0; 3420 freq = 0; 3421 tsf = 0; 3422 flags = ""; 3423 wifiSsid = null; 3424 } 3425 } 3426 } 3427 boolean attemptAutoJoin = true; 3428 SupplicantState state = mWifiInfo.getSupplicantState(); 3429 if (getCurrentState() == mRoamingState 3430 || getCurrentState() == mObtainingIpState 3431 || getCurrentState() == mScanModeState 3432 || getCurrentState() == mDisconnectingState 3433 || (getCurrentState() == mConnectedState 3434 && !mWifiConfigStore.enableAutoJoinWhenAssociated) 3435 || linkDebouncing 3436 || state == SupplicantState.ASSOCIATING 3437 || state == SupplicantState.AUTHENTICATING 3438 || state == SupplicantState.FOUR_WAY_HANDSHAKE 3439 || state == SupplicantState.GROUP_HANDSHAKE 3440 || mConnectionRequests == 0) { 3441 // Dont attempt auto-joining again while we are already attempting to join 3442 // and/or obtaining Ip address 3443 attemptAutoJoin = false; 3444 } 3445 if (DBG) { 3446 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 3447 if (selection == null) { 3448 selection = "<none>"; 3449 } 3450 loge("wifi setScanResults state" + getCurrentState() 3451 + " sup_state=" + state 3452 + " debouncing=" + linkDebouncing 3453 + " mConnectionRequests=" + mConnectionRequests 3454 + " selection=" + selection); 3455 } 3456 if (attemptAutoJoin) { 3457 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 3458 } 3459 // Loose last selected configuration if we have been disconnected for 5 minutes 3460 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 3461 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 3462 } 3463 3464 if (mWifiConfigStore.enableAutoJoinWhenAssociated) { 3465 synchronized(mScanResultCache) { 3466 // AutoJoincontroller will directly acces the scan result list and update it with 3467 // ScanResult status 3468 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 3469 } 3470 } 3471 if (linkDebouncing) { 3472 // If debouncing, we dont re-select a SSID or BSSID hence 3473 // there is no need to call the network selection code 3474 // in WifiAutoJoinController, instead, 3475 // just try to reconnect to the same SSID by triggering a roam 3476 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3477 } 3478 } 3479 3480 /* 3481 * Fetch RSSI, linkspeed, and frequency on current connection 3482 */ 3483 private void fetchRssiLinkSpeedAndFrequencyNative() { 3484 int newRssi = -1; 3485 int newLinkSpeed = -1; 3486 int newFrequency = -1; 3487 3488 String signalPoll = mWifiNative.signalPoll(); 3489 3490 if (signalPoll != null) { 3491 String[] lines = signalPoll.split("\n"); 3492 for (String line : lines) { 3493 String[] prop = line.split("="); 3494 if (prop.length < 2) continue; 3495 try { 3496 if (prop[0].equals("RSSI")) { 3497 newRssi = Integer.parseInt(prop[1]); 3498 } else if (prop[0].equals("LINKSPEED")) { 3499 newLinkSpeed = Integer.parseInt(prop[1]); 3500 } else if (prop[0].equals("FREQUENCY")) { 3501 newFrequency = Integer.parseInt(prop[1]); 3502 } 3503 } catch (NumberFormatException e) { 3504 //Ignore, defaults on rssi and linkspeed are assigned 3505 } 3506 } 3507 } 3508 3509 if (PDBG) { 3510 loge("fetchRssiLinkSpeedAndFrequencyNative rssi=" 3511 + Integer.toString(newRssi) + " linkspeed=" 3512 + Integer.toString(newLinkSpeed)); 3513 } 3514 3515 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 3516 // screen out invalid values 3517 /* some implementations avoid negative values by adding 256 3518 * so we need to adjust for that here. 3519 */ 3520 if (newRssi > 0) newRssi -= 256; 3521 mWifiInfo.setRssi(newRssi); 3522 /* 3523 * Rather then sending the raw RSSI out every time it 3524 * changes, we precalculate the signal level that would 3525 * be displayed in the status bar, and only send the 3526 * broadcast if that much more coarse-grained number 3527 * changes. This cuts down greatly on the number of 3528 * broadcasts, at the cost of not informing others 3529 * interested in RSSI of all the changes in signal 3530 * level. 3531 */ 3532 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 3533 if (newSignalLevel != mLastSignalLevel) { 3534 sendRssiChangeBroadcast(newRssi); 3535 } 3536 mLastSignalLevel = newSignalLevel; 3537 } else { 3538 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 3539 } 3540 3541 if (newLinkSpeed != -1) { 3542 mWifiInfo.setLinkSpeed(newLinkSpeed); 3543 } 3544 if (newFrequency > 0) { 3545 if (ScanResult.is5GHz(newFrequency)) { 3546 mWifiConnectionStatistics.num5GhzConnected++; 3547 } 3548 if (ScanResult.is24GHz(newFrequency)) { 3549 mWifiConnectionStatistics.num24GhzConnected++; 3550 } 3551 mWifiInfo.setFrequency(newFrequency); 3552 } 3553 mWifiConfigStore.updateConfiguration(mWifiInfo); 3554 } 3555 3556 /** 3557 * Determine if we need to switch network: 3558 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 3559 * - match the uregncy of the switch versus the packet usage at the interface 3560 */ 3561 boolean shouldSwitchNetwork(int networkDelta) { 3562 int delta; 3563 if (networkDelta <= 0) { 3564 return false; 3565 } 3566 delta = networkDelta; 3567 if (mWifiInfo != null) { 3568 if (!mWifiConfigStore.enableAutoJoinWhenAssociated 3569 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 3570 // If AutoJoin while associated is not enabled, 3571 // we should never switch network when already associated 3572 delta = -1000; 3573 } else { 3574 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 3575 // TODO: at the interface. We should also discriminate between ucast and mcast, 3576 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 3577 // TODO: broadcasts 3578 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 3579 delta -= 999; 3580 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 3581 delta -= 6; 3582 } 3583 loge("WifiStateMachine shouldSwitchNetwork " 3584 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3585 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3586 + " delta " + networkDelta + " -> " + delta); 3587 } 3588 } else { 3589 loge("WifiStateMachine shouldSwitchNetwork " 3590 + " delta " + networkDelta + " -> " + delta); 3591 } 3592 if (delta > 0) { 3593 return true; 3594 } 3595 return false; 3596 } 3597 3598 // Polling has completed, hence we wont have a score anymore 3599 private void cleanWifiScore() { 3600 mWifiInfo.txBadRate = 0; 3601 mWifiInfo.txSuccessRate = 0; 3602 mWifiInfo.txRetriesRate = 0; 3603 mWifiInfo.rxSuccessRate = 0; 3604 } 3605 3606 int mBadLinkspeedcount = 0; 3607 3608 // For debug, provide information about the last scoring operation 3609 String wifiScoringReport = null; 3610 private void calculateWifiScore(WifiLinkLayerStats stats) { 3611 StringBuilder sb = new StringBuilder(); 3612 3613 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 3614 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 3615 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 3616 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3617 < mWifiConfigStore.badLinkSpeed5); 3618 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 3619 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 3620 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3621 >= mWifiConfigStore.goodLinkSpeed5); 3622 3623 if (isBadLinkspeed) { 3624 if (mBadLinkspeedcount < 6) 3625 mBadLinkspeedcount++; 3626 } else { 3627 if (mBadLinkspeedcount > 0) 3628 mBadLinkspeedcount--; 3629 } 3630 3631 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 3632 if (isGoodLinkspeed) sb.append(" gl"); 3633 3634 /** 3635 * We want to make sure that we use the 24GHz RSSI thresholds if 3636 * there are 2.4GHz scan results 3637 * otherwise we end up lowering the score based on 5GHz values 3638 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 3639 * We also might unblacklist the configuation based on 2.4GHz 3640 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 3641 */ 3642 boolean use24Thresholds = false; 3643 boolean homeNetworkBoost = false; 3644 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 3645 if (currentConfiguration != null 3646 && currentConfiguration.scanResultCache != null) { 3647 currentConfiguration.setVisibility(12000); 3648 if (currentConfiguration.visibility != null) { 3649 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 3650 && currentConfiguration.visibility.rssi24 3651 >= (currentConfiguration.visibility.rssi5-2)) { 3652 use24Thresholds = true; 3653 } 3654 } 3655 if (currentConfiguration.scanResultCache.size() <= 6 3656 && currentConfiguration.allowedKeyManagement.cardinality() == 1 3657 && currentConfiguration.allowedKeyManagement. 3658 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 3659 // A PSK network with less than 6 known BSSIDs 3660 // This is most likely a home network and thus we want to stick to wifi more 3661 homeNetworkBoost = true; 3662 } 3663 } 3664 if (homeNetworkBoost) sb.append(" hn"); 3665 if (use24Thresholds) sb.append(" u24"); 3666 3667 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 3668 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 3669 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 3670 3671 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 3672 3673 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24) 3674 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5); 3675 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24) 3676 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5); 3677 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24) 3678 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5); 3679 3680 if (isBadRSSI) sb.append(" br"); 3681 if (isLowRSSI) sb.append(" lr"); 3682 if (isHighRSSI) sb.append(" hr"); 3683 3684 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 3685 if (currentConfiguration!= null && 3686 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 3687 if (isBadRSSI) { 3688 currentConfiguration.numTicksAtBadRSSI++; 3689 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 3690 // We remained associated for a compound amount of time while passing 3691 // traffic, hence loose the corresponding user triggered disabled stats 3692 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 3693 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 3694 } 3695 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3696 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3697 } 3698 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3699 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3700 } 3701 currentConfiguration.numTicksAtBadRSSI = 0; 3702 } 3703 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3704 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 3705 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3706 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3707 score = score -5; 3708 penalizedDueToUserTriggeredDisconnect = 1; 3709 sb.append(" p1"); 3710 } 3711 } else if (isLowRSSI) { 3712 currentConfiguration.numTicksAtLowRSSI++; 3713 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 3714 // We remained associated for a compound amount of time while passing 3715 // traffic, hence loose the corresponding user triggered disabled stats 3716 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3717 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3718 } 3719 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3720 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3721 } 3722 currentConfiguration.numTicksAtLowRSSI = 0; 3723 } 3724 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3725 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3726 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3727 score = score -5; 3728 penalizedDueToUserTriggeredDisconnect = 2; 3729 sb.append(" p2"); 3730 } 3731 } else if (!isHighRSSI) { 3732 currentConfiguration.numTicksAtNotHighRSSI++; 3733 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 3734 // We remained associated for a compound amount of time while passing 3735 // traffic, hence loose the corresponding user triggered disabled stats 3736 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3737 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3738 } 3739 currentConfiguration.numTicksAtNotHighRSSI = 0; 3740 } 3741 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3742 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3743 score = score -5; 3744 penalizedDueToUserTriggeredDisconnect = 3; 3745 sb.append(" p3"); 3746 } 3747 } 3748 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 3749 currentConfiguration.numTicksAtLowRSSI, 3750 currentConfiguration.numTicksAtNotHighRSSI)); 3751 } 3752 3753 if (PDBG) { 3754 String rssiStatus = ""; 3755 if (isBadRSSI) rssiStatus += " badRSSI "; 3756 else if (isHighRSSI) rssiStatus += " highRSSI "; 3757 else if (isLowRSSI) rssiStatus += " lowRSSI "; 3758 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 3759 loge("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 3760 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 3761 + " score=" + Integer.toString(mWifiInfo.score) 3762 + rssiStatus 3763 + " -> txbadrate=" + String.format( "%.2f", mWifiInfo.txBadRate ) 3764 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3765 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 3766 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3767 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 3768 } 3769 3770 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 3771 && (isBadRSSI || isLowRSSI)) { 3772 // Link is stuck 3773 if (mWifiInfo.linkStuckCount < 5) 3774 mWifiInfo.linkStuckCount += 1; 3775 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 3776 if (PDBG) loge(" bad link -> stuck count =" 3777 + Integer.toString(mWifiInfo.linkStuckCount)); 3778 } else if (mWifiInfo.txSuccessRate > 2 || mWifiInfo.txBadRate < 0.1) { 3779 if (mWifiInfo.linkStuckCount > 0) 3780 mWifiInfo.linkStuckCount -= 1; 3781 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 3782 if (PDBG) loge(" good link -> stuck count =" 3783 + Integer.toString(mWifiInfo.linkStuckCount)); 3784 } 3785 3786 sb.append(String.format(" [%d", score)); 3787 3788 if (mWifiInfo.linkStuckCount > 1) { 3789 // Once link gets stuck for more than 3 seconds, start reducing the score 3790 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 3791 } 3792 sb.append(String.format(",%d", score)); 3793 3794 if (isBadLinkspeed) { 3795 score -= 4 ; 3796 if (PDBG) { 3797 loge(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 3798 + " score=" + Integer.toString(score)); 3799 } 3800 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 3801 score += 4; // So as bad rssi alone dont kill us 3802 } 3803 sb.append(String.format(",%d", score)); 3804 3805 if (isBadRSSI) { 3806 if (mWifiInfo.badRssiCount < 7) 3807 mWifiInfo.badRssiCount += 1; 3808 } else if (isLowRSSI) { 3809 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 3810 if (mWifiInfo.badRssiCount > 0) { 3811 // Decrement bad Rssi count 3812 mWifiInfo.badRssiCount -= 1; 3813 } 3814 } else { 3815 mWifiInfo.badRssiCount = 0; 3816 mWifiInfo.lowRssiCount = 0; 3817 } 3818 3819 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount ; 3820 sb.append(String.format(",%d", score)); 3821 3822 if (PDBG) loge(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 3823 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 3824 + " --> score " + Integer.toString(score)); 3825 3826 3827 if (isHighRSSI) { 3828 score += 5; 3829 if (PDBG) loge(" isHighRSSI ---> score=" + Integer.toString(score)); 3830 } 3831 sb.append(String.format(",%d]", score)); 3832 3833 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 3834 3835 //sanitize boundaries 3836 if (score > NetworkAgent.WIFI_BASE_SCORE) 3837 score = NetworkAgent.WIFI_BASE_SCORE; 3838 if (score < 0) 3839 score = 0; 3840 3841 //report score 3842 if (score != mWifiInfo.score) { 3843 if (DBG) { 3844 loge("calculateWifiScore() report new score " + Integer.toString(score)); 3845 } 3846 mWifiInfo.score = score; 3847 if (mNetworkAgent != null) { 3848 mNetworkAgent.sendNetworkScore(score); 3849 } 3850 } 3851 wifiScoringReport = sb.toString(); 3852 } 3853 3854 public double getTxPacketRate() { 3855 if (mWifiInfo != null) { 3856 return mWifiInfo.txSuccessRate; 3857 } 3858 return -1; 3859 } 3860 3861 public double getRxPacketRate() { 3862 if (mWifiInfo != null) { 3863 return mWifiInfo.rxSuccessRate; 3864 } 3865 return -1; 3866 } 3867 3868 /** 3869 * Fetch TX packet counters on current connection 3870 */ 3871 private void fetchPktcntNative(RssiPacketCountInfo info) { 3872 String pktcntPoll = mWifiNative.pktcntPoll(); 3873 3874 if (pktcntPoll != null) { 3875 String[] lines = pktcntPoll.split("\n"); 3876 for (String line : lines) { 3877 String[] prop = line.split("="); 3878 if (prop.length < 2) continue; 3879 try { 3880 if (prop[0].equals("TXGOOD")) { 3881 info.txgood = Integer.parseInt(prop[1]); 3882 } else if (prop[0].equals("TXBAD")) { 3883 info.txbad = Integer.parseInt(prop[1]); 3884 } 3885 } catch (NumberFormatException e) { 3886 // Ignore 3887 } 3888 } 3889 } 3890 } 3891 3892 private boolean clearIPv4Address(String iface) { 3893 try { 3894 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 3895 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 3896 mNwService.setInterfaceConfig(iface, ifcg); 3897 return true; 3898 } catch (RemoteException e) { 3899 return false; 3900 } 3901 } 3902 3903 private boolean isProvisioned(LinkProperties lp) { 3904 return lp.isProvisioned() || 3905 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 3906 } 3907 3908 /** 3909 * Updates mLinkProperties by merging information from various sources. 3910 * 3911 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 3912 * netlink, static configuration, ...). When one of these sources of information has updated 3913 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 3914 * information that came from other sources. Instead, when one of those sources has new 3915 * information, we update the object that tracks the information from that source and then 3916 * call this method to apply the change to mLinkProperties. 3917 * 3918 * The information in mLinkProperties is currently obtained as follows: 3919 * - Interface name: set in the constructor. 3920 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 3921 * - IPv4 routes, DNS servers, and domains: DHCP. 3922 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 3923 * - HTTP proxy: the wifi config store. 3924 */ 3925 private void updateLinkProperties(int reason) { 3926 LinkProperties newLp = new LinkProperties(); 3927 3928 // Interface name and proxy are locally configured. 3929 newLp.setInterfaceName(mInterfaceName); 3930 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 3931 3932 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 3933 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 3934 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 3935 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 3936 newLp.addRoute(route); 3937 } 3938 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 3939 newLp.addDnsServer(dns); 3940 } 3941 3942 // IPv4 routes, DNS servers and domains come from mDhcpResults. 3943 synchronized (mDhcpResultsLock) { 3944 // Even when we're using static configuration, we don't need to look at the config 3945 // store, because static IP configuration also populates mDhcpResults. 3946 if ((mDhcpResults != null)) { 3947 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 3948 newLp.addRoute(route); 3949 } 3950 for (InetAddress dns : mDhcpResults.dnsServers) { 3951 newLp.addDnsServer(dns); 3952 } 3953 newLp.setDomains(mDhcpResults.domains); 3954 } 3955 } 3956 3957 final boolean linkChanged = !newLp.equals(mLinkProperties); 3958 final boolean wasProvisioned = isProvisioned(mLinkProperties); 3959 final boolean isProvisioned = isProvisioned(newLp); 3960 final DetailedState detailedState = getNetworkDetailedState(); 3961 3962 if (linkChanged) { 3963 if (DBG) { 3964 log("Link configuration changed for netId: " + mLastNetworkId 3965 + " old: " + mLinkProperties + " new: " + newLp); 3966 } 3967 mLinkProperties = newLp; 3968 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 3969 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 3970 } 3971 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 3972 } 3973 3974 if (DBG) { 3975 StringBuilder sb = new StringBuilder(); 3976 sb.append("updateLinkProperties nid: " + mLastNetworkId); 3977 sb.append(" state: " + detailedState); 3978 sb.append(" reason: " + smToString(reason)); 3979 3980 if (mLinkProperties != null) { 3981 if (mLinkProperties.hasIPv4Address()) { 3982 sb.append(" v4"); 3983 } 3984 if (mLinkProperties.hasGlobalIPv6Address()) { 3985 sb.append(" v6"); 3986 } 3987 if (mLinkProperties.hasIPv4DefaultRoute()) { 3988 sb.append(" v4r"); 3989 } 3990 if (mLinkProperties.hasIPv6DefaultRoute()) { 3991 sb.append(" v6r"); 3992 } 3993 if (mLinkProperties.hasIPv4DnsServer()) { 3994 sb.append(" v4dns"); 3995 } 3996 if (mLinkProperties.hasIPv6DnsServer()) { 3997 sb.append(" v6dns"); 3998 } 3999 if (isProvisioned) { 4000 sb.append(" isprov"); 4001 } 4002 } 4003 loge(sb.toString()); 4004 } 4005 4006 // If we just configured or lost IP configuration, do the needful. 4007 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4008 // here because those should only be called if we're attempting to connect or already 4009 // connected, whereas updateLinkProperties can be called at any time. 4010 switch (reason) { 4011 case DhcpStateMachine.DHCP_SUCCESS: 4012 case CMD_STATIC_IP_SUCCESS: 4013 // IPv4 provisioning succeded. Advance to connected state. 4014 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4015 if (!isProvisioned) { 4016 // Can never happen unless DHCP reports success but isProvisioned thinks the 4017 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4018 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4019 // TODO: disconnect here instead. If our configuration is not usable, there's no 4020 // point in staying connected, and if mLinkProperties is out of sync with 4021 // reality, that will cause problems in the future. 4022 loge("IPv4 config succeeded, but not provisioned"); 4023 } 4024 break; 4025 4026 case DhcpStateMachine.DHCP_FAILURE: 4027 // DHCP failed. If we're not already provisioned, give up and disconnect. 4028 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4029 if (!isProvisioned) { 4030 sendMessage(CMD_IP_CONFIGURATION_LOST); 4031 } else { 4032 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4033 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4034 4035 // To be sure we don't get stuck with a non-working network if all we had is 4036 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4037 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4038 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4039 // necessary for provisioning, its deletion will cause us to disconnect. 4040 // 4041 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4042 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4043 // not return true if we're using DHCP and don't have an IPv4 default route. So 4044 // for now it's only here for extra redundancy. However, it will increase 4045 // robustness if we move to getting IPv4 routes from netlink as well. 4046 loge("DHCP failure: provisioned, clearing IPv4 address."); 4047 if (!clearIPv4Address(mInterfaceName)) { 4048 sendMessage(CMD_IP_CONFIGURATION_LOST); 4049 } 4050 } 4051 break; 4052 4053 case CMD_STATIC_IP_FAILURE: 4054 // Static configuration was invalid, or an error occurred in applying it. Give up. 4055 sendMessage(CMD_IP_CONFIGURATION_LOST); 4056 break; 4057 4058 case CMD_UPDATE_LINKPROPERTIES: 4059 // IP addresses, DNS servers, etc. changed. Act accordingly. 4060 if (wasProvisioned && !isProvisioned) { 4061 // We no longer have a usable network configuration. Disconnect. 4062 sendMessage(CMD_IP_CONFIGURATION_LOST); 4063 } else if (!wasProvisioned && isProvisioned) { 4064 // We have a usable IPv6-only config. Advance to connected state. 4065 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4066 } 4067 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4068 // If anything has changed and we're already connected, send out a notification. 4069 sendLinkConfigurationChangedBroadcast(); 4070 } 4071 break; 4072 } 4073 } 4074 4075 /** 4076 * Clears all our link properties. 4077 */ 4078 private void clearLinkProperties() { 4079 // Clear the link properties obtained from DHCP and netlink. 4080 synchronized (mDhcpResultsLock) { 4081 if (mDhcpResults != null) { 4082 mDhcpResults.clear(); 4083 } 4084 } 4085 mNetlinkTracker.clearLinkProperties(); 4086 4087 // Now clear the merged link properties. 4088 mLinkProperties.clear(); 4089 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4090 } 4091 4092 /** 4093 * try to update default route MAC address. 4094 */ 4095 private String updateDefaultRouteMacAddress(int timeout) { 4096 String address = null; 4097 for (RouteInfo route : mLinkProperties.getRoutes()) { 4098 if (route.isDefaultRoute() && route.hasGateway()) { 4099 InetAddress gateway = route.getGateway(); 4100 if (gateway instanceof Inet4Address) { 4101 if (PDBG) { 4102 loge("updateDefaultRouteMacAddress found Ipv4 default :" 4103 + gateway.getHostAddress()); 4104 } 4105 address = macAddressFromRoute(gateway.getHostAddress()); 4106 /* The gateway's MAC address is known */ 4107 if ((address == null) && (timeout > 0)) { 4108 boolean reachable = false; 4109 try { 4110 reachable = gateway.isReachable(timeout); 4111 } catch (Exception e) { 4112 loge("updateDefaultRouteMacAddress exception reaching :" 4113 + gateway.getHostAddress()); 4114 4115 } finally { 4116 if (reachable == true) { 4117 4118 address = macAddressFromRoute(gateway.getHostAddress()); 4119 if (PDBG) { 4120 loge("updateDefaultRouteMacAddress reachable (tried again) :" 4121 + gateway.getHostAddress() + " found " + address); 4122 } 4123 } 4124 } 4125 } 4126 if (address != null) { 4127 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4128 } 4129 } 4130 } 4131 } 4132 return address; 4133 } 4134 4135 private void sendScanResultsAvailableBroadcast() { 4136 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4137 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4138 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4139 } 4140 4141 private void sendRssiChangeBroadcast(final int newRssi) { 4142 try { 4143 mBatteryStats.noteWifiRssiChanged(newRssi); 4144 } catch (RemoteException e) { 4145 // Won't happen. 4146 } 4147 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4148 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4149 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4150 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4151 } 4152 4153 private void sendNetworkStateChangeBroadcast(String bssid) { 4154 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4155 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4156 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4157 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties (mLinkProperties)); 4158 if (bssid != null) 4159 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4160 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4161 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4162 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, new WifiInfo(mWifiInfo)); 4163 } 4164 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4165 } 4166 4167 private void sendLinkConfigurationChangedBroadcast() { 4168 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4169 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4170 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4171 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4172 } 4173 4174 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4175 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4176 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4177 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4178 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4179 } 4180 4181 /** 4182 * Record the detailed state of a network. 4183 * @param state the new {@code DetailedState} 4184 */ 4185 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4186 boolean hidden = false; 4187 4188 if (linkDebouncing || isRoaming()) { 4189 // There is generally a confusion in the system about colluding 4190 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4191 // which leads to multiple confusion. 4192 // 4193 // If link is de-bouncing or roaming, we already have an IP address 4194 // as well we were connected and are doing L2 cycles of 4195 // reconnecting or renewing IP address to check that we still have it 4196 // This L2 link flapping should ne be reflected into the Network state 4197 // which is the state of the WiFi Network visible to Layer 3 and applications 4198 // Note that once debouncing and roaming are completed, we will 4199 // set the Network state to where it should be, or leave it as unchanged 4200 // 4201 hidden = true; 4202 } 4203 if (DBG) { 4204 log("setDetailed state, old =" 4205 + mNetworkInfo.getDetailedState() + " and new state=" + state 4206 + " hidden=" + hidden); 4207 } 4208 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4209 // Always indicate that SSID has changed 4210 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4211 if (DBG) { 4212 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4213 } 4214 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4215 sendNetworkStateChangeBroadcast(null); 4216 } 4217 } 4218 if (hidden == true) { 4219 return false; 4220 } 4221 4222 if (state != mNetworkInfo.getDetailedState()) { 4223 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4224 if (mNetworkAgent != null) { 4225 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4226 } 4227 sendNetworkStateChangeBroadcast(null); 4228 return true; 4229 } 4230 return false; 4231 } 4232 4233 private DetailedState getNetworkDetailedState() { 4234 return mNetworkInfo.getDetailedState(); 4235 } 4236 4237 4238 private SupplicantState handleSupplicantStateChange(Message message) { 4239 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4240 SupplicantState state = stateChangeResult.state; 4241 // Supplicant state change 4242 // [31-13] Reserved for future use 4243 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4244 // 50023 supplicant_state_changed (custom|1|5) 4245 mWifiInfo.setSupplicantState(state); 4246 // Network id is only valid when we start connecting 4247 if (SupplicantState.isConnecting(state)) { 4248 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4249 } else { 4250 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4251 } 4252 4253 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4254 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4255 4256 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4257 4258 return state; 4259 } 4260 4261 /** 4262 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4263 * using the interface, stopping DHCP & disabling interface 4264 */ 4265 private void handleNetworkDisconnect() { 4266 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4267 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4268 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 4269 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 4270 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 4271 4272 4273 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4274 4275 stopDhcp(); 4276 4277 try { 4278 mNwService.clearInterfaceAddresses(mInterfaceName); 4279 mNwService.disableIpv6(mInterfaceName); 4280 } catch (Exception e) { 4281 loge("Failed to clear addresses or disable ipv6" + e); 4282 } 4283 4284 /* Reset data structures */ 4285 mBadLinkspeedcount = 0; 4286 mWifiInfo.reset(); 4287 linkDebouncing = false; 4288 /* Reset roaming parameters */ 4289 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4290 4291 /** 4292 * fullBandConnectedTimeIntervalMilli: 4293 * - start scans at mWifiConfigStore.associatedPartialScanPeriodMilli seconds interval 4294 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4295 * Initialize to sane value = 20 seconds 4296 */ 4297 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4298 4299 setNetworkDetailedState(DetailedState.DISCONNECTED); 4300 if (mNetworkAgent != null) { 4301 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4302 mNetworkAgent = null; 4303 } 4304 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4305 4306 /* Clear network properties */ 4307 clearLinkProperties(); 4308 4309 /* Cend event to CM & network change broadcast */ 4310 sendNetworkStateChangeBroadcast(mLastBssid); 4311 4312 /* Cancel auto roam requests */ 4313 autoRoamSetBSSID(mLastNetworkId, "any"); 4314 4315 mLastBssid= null; 4316 registerDisconnected(); 4317 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4318 } 4319 4320 private void handleSupplicantConnectionLoss() { 4321 /* Socket connection can be lost when we do a graceful shutdown 4322 * or when the driver is hung. Ensure supplicant is stopped here. 4323 */ 4324 mWifiMonitor.killSupplicant(mP2pSupported); 4325 mWifiNative.closeSupplicantConnection(); 4326 sendSupplicantConnectionChangedBroadcast(false); 4327 setWifiState(WIFI_STATE_DISABLED); 4328 } 4329 4330 void handlePreDhcpSetup() { 4331 mDhcpActive = true; 4332 if (!mBluetoothConnectionActive) { 4333 /* 4334 * There are problems setting the Wi-Fi driver's power 4335 * mode to active when bluetooth coexistence mode is 4336 * enabled or sense. 4337 * <p> 4338 * We set Wi-Fi to active mode when 4339 * obtaining an IP address because we've found 4340 * compatibility issues with some routers with low power 4341 * mode. 4342 * <p> 4343 * In order for this active power mode to properly be set, 4344 * we disable coexistence mode until we're done with 4345 * obtaining an IP address. One exception is if we 4346 * are currently connected to a headset, since disabling 4347 * coexistence would interrupt that connection. 4348 */ 4349 // Disable the coexistence mode 4350 mWifiNative.setBluetoothCoexistenceMode( 4351 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4352 } 4353 4354 // Disable power save and suspend optimizations during DHCP 4355 // Note: The order here is important for now. Brcm driver changes 4356 // power settings when we control suspend mode optimizations. 4357 // TODO: Remove this comment when the driver is fixed. 4358 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4359 mWifiNative.setPowerSave(false); 4360 4361 stopBatchedScan(); 4362 WifiNative.pauseScan(); 4363 4364 // Update link layer stats 4365 getWifiLinkLayerStats(false); 4366 4367 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4368 Message msg = new Message(); 4369 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4370 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4371 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4372 msg.obj = mDhcpStateMachine; 4373 mWifiP2pChannel.sendMessage(msg); 4374 } 4375 4376 4377 void startDhcp() { 4378 if (mDhcpStateMachine == null) { 4379 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4380 mContext, WifiStateMachine.this, mInterfaceName); 4381 4382 } 4383 mDhcpStateMachine.registerForPreDhcpNotification(); 4384 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4385 } 4386 4387 void renewDhcp() { 4388 if (mDhcpStateMachine == null) { 4389 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4390 mContext, WifiStateMachine.this, mInterfaceName); 4391 4392 } 4393 mDhcpStateMachine.registerForPreDhcpNotification(); 4394 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4395 } 4396 4397 void stopDhcp() { 4398 if (mDhcpStateMachine != null) { 4399 /* In case we were in middle of DHCP operation restore back powermode */ 4400 handlePostDhcpSetup(); 4401 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4402 } 4403 } 4404 4405 void handlePostDhcpSetup() { 4406 /* Restore power save and suspend optimizations */ 4407 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4408 mWifiNative.setPowerSave(true); 4409 4410 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 4411 4412 // Set the coexistence mode back to its default value 4413 mWifiNative.setBluetoothCoexistenceMode( 4414 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4415 4416 mDhcpActive = false; 4417 4418 startBatchedScan(); 4419 WifiNative.restartScan(); 4420 } 4421 4422 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 4423 4424 if (PDBG) { 4425 loge("wifistatemachine handleIPv4Success <" + dhcpResults.toString() + ">"); 4426 loge("link address " + dhcpResults.ipAddress); 4427 } 4428 4429 synchronized (mDhcpResultsLock) { 4430 mDhcpResults = dhcpResults; 4431 } 4432 4433 Inet4Address addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 4434 if (isRoaming()) { 4435 if (addr instanceof Inet4Address) { 4436 int previousAddress = mWifiInfo.getIpAddress(); 4437 int newAddress = NetworkUtils.inetAddressToInt(addr); 4438 if (previousAddress != newAddress) { 4439 loge("handleIPv4Success, roaming and address changed" + 4440 mWifiInfo + " got: " + addr); 4441 } else { 4442 4443 } 4444 } else { 4445 loge("handleIPv4Success, roaming and didnt get an IPv4 address" + 4446 addr.toString()); 4447 } 4448 } 4449 mWifiInfo.setInetAddress(addr); 4450 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 4451 updateLinkProperties(reason); 4452 } 4453 4454 private void handleSuccessfulIpConfiguration() { 4455 mLastSignalLevel = -1; // Force update of signal strength 4456 WifiConfiguration c = getCurrentWifiConfiguration(); 4457 if (c != null) { 4458 // Reset IP failure tracking 4459 c.numConnectionFailures = 0; 4460 4461 // Tell the framework whether the newly connected network is trusted or untrusted. 4462 updateCapabilities(c); 4463 } 4464 if (c != null) { 4465 ScanResult result = getCurrentScanResult(); 4466 if (result == null) { 4467 loge("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 4468 c.configKey()); 4469 } else { 4470 // Clear the per BSSID failure count 4471 result.numIpConfigFailures = 0; 4472 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 4473 // any BSSID, even though it may already have a non zero ip failure count, 4474 // this will typically happen if the user walks away and come back to his arrea 4475 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 4476 // in supplicant for a couple of hours or a day 4477 mWifiNative.clearBlacklist(); 4478 } 4479 } 4480 } 4481 4482 private void handleIPv4Failure(int reason) { 4483 synchronized(mDhcpResultsLock) { 4484 if (mDhcpResults != null) { 4485 mDhcpResults.clear(); 4486 } 4487 } 4488 if (PDBG) { 4489 loge("wifistatemachine handleIPv4Failure"); 4490 } 4491 updateLinkProperties(reason); 4492 } 4493 4494 private void handleIpConfigurationLost() { 4495 mWifiInfo.setInetAddress(null); 4496 mWifiInfo.setMeteredHint(false); 4497 4498 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 4499 "DHCP FAILURE", mWifiInfo.getBSSID()); 4500 4501 /* DHCP times out after about 30 seconds, we do a 4502 * disconnect thru supplicant, we will let autojoin retry connecting to the network 4503 */ 4504 mWifiNative.disconnect(); 4505 } 4506 4507 /* Current design is to not set the config on a running hostapd but instead 4508 * stop and start tethering when user changes config on a running access point 4509 * 4510 * TODO: Add control channel setup through hostapd that allows changing config 4511 * on a running daemon 4512 */ 4513 private void startSoftApWithConfig(final WifiConfiguration config) { 4514 // Start hostapd on a separate thread 4515 new Thread(new Runnable() { 4516 public void run() { 4517 try { 4518 mNwService.startAccessPoint(config, mInterfaceName); 4519 } catch (Exception e) { 4520 loge("Exception in softap start " + e); 4521 try { 4522 mNwService.stopAccessPoint(mInterfaceName); 4523 mNwService.startAccessPoint(config, mInterfaceName); 4524 } catch (Exception e1) { 4525 loge("Exception in softap re-start " + e1); 4526 sendMessage(CMD_START_AP_FAILURE); 4527 return; 4528 } 4529 } 4530 if (DBG) log("Soft AP start successful"); 4531 sendMessage(CMD_START_AP_SUCCESS); 4532 } 4533 }).start(); 4534 } 4535 4536 /* 4537 * Read a MAC address in /proc/arp/table, used by WifistateMachine 4538 * so as to record MAC address of default gateway. 4539 **/ 4540 private String macAddressFromRoute(String ipAddress) { 4541 String macAddress = null; 4542 BufferedReader reader = null; 4543 try { 4544 reader = new BufferedReader(new FileReader("/proc/net/arp")); 4545 4546 // Skip over the line bearing colum titles 4547 String line = reader.readLine(); 4548 4549 while ((line = reader.readLine()) != null) { 4550 String[] tokens = line.split("[ ]+"); 4551 if (tokens.length < 6) { 4552 continue; 4553 } 4554 4555 // ARP column format is 4556 // Address HWType HWAddress Flags Mask IFace 4557 String ip = tokens[0]; 4558 String mac = tokens[3]; 4559 4560 if (ipAddress.equals(ip)) { 4561 macAddress = mac; 4562 break; 4563 } 4564 } 4565 4566 if (macAddress == null) { 4567 loge("Did not find remoteAddress {" + ipAddress + "} in " + 4568 "/proc/net/arp"); 4569 } 4570 4571 } catch (FileNotFoundException e) { 4572 loge("Could not open /proc/net/arp to lookup mac address"); 4573 } catch (IOException e) { 4574 loge("Could not read /proc/net/arp to lookup mac address"); 4575 } finally { 4576 try { 4577 if (reader != null) { 4578 reader.close(); 4579 } 4580 } catch (IOException e) { 4581 // Do nothing 4582 } 4583 } 4584 return macAddress; 4585 4586 } 4587 4588 private class WifiNetworkFactory extends NetworkFactory { 4589 /** Number of outstanding NetworkRequests for untrusted networks. */ 4590 private int mUntrustedReqCount = 0; 4591 4592 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 4593 super(l, c, TAG, f); 4594 } 4595 4596 @Override 4597 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 4598 ++mConnectionRequests; 4599 if (!networkRequest.networkCapabilities.hasCapability( 4600 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 4601 if (++mUntrustedReqCount == 1) { 4602 mWifiAutoJoinController.setAllowUntrustedConnections(true); 4603 } 4604 } 4605 } 4606 4607 @Override 4608 protected void releaseNetworkFor(NetworkRequest networkRequest) { 4609 --mConnectionRequests; 4610 if (!networkRequest.networkCapabilities.hasCapability( 4611 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 4612 if (--mUntrustedReqCount == 0) { 4613 mWifiAutoJoinController.setAllowUntrustedConnections(false); 4614 } 4615 } 4616 } 4617 4618 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 4619 pw.println("mConnectionRequests " + mConnectionRequests); 4620 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 4621 } 4622 4623 } 4624 4625 void maybeRegisterNetworkFactory() { 4626 if (mNetworkFactory == null) { 4627 checkAndSetConnectivityInstance(); 4628 if (mCm != null) { 4629 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 4630 NETWORKTYPE, mNetworkCapabilitiesFilter); 4631 mNetworkFactory.setScoreFilter(60); 4632 mNetworkFactory.register(); 4633 } 4634 } 4635 } 4636 4637 /******************************************************** 4638 * HSM states 4639 *******************************************************/ 4640 4641 class DefaultState extends State { 4642 @Override 4643 public boolean processMessage(Message message) { 4644 logStateAndMessage(message, getClass().getSimpleName()); 4645 4646 switch (message.what) { 4647 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 4648 AsyncChannel ac = (AsyncChannel) message.obj; 4649 if (ac == mWifiP2pChannel) { 4650 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 4651 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 4652 } else { 4653 loge("WifiP2pService connection failure, error=" + message.arg1); 4654 } 4655 } else { 4656 loge("got HALF_CONNECTED for unknown channel"); 4657 } 4658 break; 4659 } 4660 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 4661 AsyncChannel ac = (AsyncChannel) message.obj; 4662 if (ac == mWifiP2pChannel) { 4663 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 4664 //TODO: Re-establish connection to state machine after a delay 4665 // mWifiP2pChannel.connect(mContext, getHandler(), 4666 // mWifiP2pManager.getMessenger()); 4667 } 4668 break; 4669 } 4670 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 4671 mBluetoothConnectionActive = (message.arg1 != 4672 BluetoothAdapter.STATE_DISCONNECTED); 4673 break; 4674 /* Synchronous call returns */ 4675 case CMD_PING_SUPPLICANT: 4676 case CMD_ENABLE_NETWORK: 4677 case CMD_ADD_OR_UPDATE_NETWORK: 4678 case CMD_REMOVE_NETWORK: 4679 case CMD_SAVE_CONFIG: 4680 replyToMessage(message, message.what, FAILURE); 4681 break; 4682 case CMD_GET_CAPABILITY_FREQ: 4683 replyToMessage(message, message.what, null); 4684 break; 4685 case CMD_GET_CONFIGURED_NETWORKS: 4686 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4687 break; 4688 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 4689 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4690 break; 4691 case CMD_ENABLE_RSSI_POLL: 4692 mEnableRssiPolling = (message.arg1 == 1); 4693 break; 4694 case CMD_SET_HIGH_PERF_MODE: 4695 if (message.arg1 == 1) { 4696 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 4697 } else { 4698 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 4699 } 4700 break; 4701 case CMD_BOOT_COMPLETED: 4702 String countryCode = mPersistedCountryCode; 4703 if (TextUtils.isEmpty(countryCode) == false) { 4704 Settings.Global.putString(mContext.getContentResolver(), 4705 Settings.Global.WIFI_COUNTRY_CODE, 4706 countryCode); 4707 // It may be that the state transition that should send this info 4708 // to the driver happened between mPersistedCountryCode getting set 4709 // and now, so simply persisting it here would mean we have sent 4710 // nothing to the driver. Send the cmd so it might be set now. 4711 int sequenceNum = mCountryCodeSequence.incrementAndGet(); 4712 sendMessageAtFrontOfQueue(CMD_SET_COUNTRY_CODE, 4713 sequenceNum, 0, countryCode); 4714 } 4715 maybeRegisterNetworkFactory(); 4716 break; 4717 case CMD_SET_BATCHED_SCAN: 4718 recordBatchedScanSettings(message.arg1, message.arg2, (Bundle)message.obj); 4719 break; 4720 case CMD_POLL_BATCHED_SCAN: 4721 handleBatchedScanPollRequest(); 4722 break; 4723 case CMD_START_NEXT_BATCHED_SCAN: 4724 startNextBatchedScan(); 4725 break; 4726 case CMD_SCREEN_STATE_CHANGED: 4727 handleScreenStateChanged(message.arg1 != 0, 4728 /* startBackgroundScanIfNeeded = */ false); 4729 break; 4730 /* Discard */ 4731 case CMD_START_SCAN: 4732 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4733 break; 4734 case CMD_START_SUPPLICANT: 4735 case CMD_STOP_SUPPLICANT: 4736 case CMD_STOP_SUPPLICANT_FAILED: 4737 case CMD_START_DRIVER: 4738 case CMD_STOP_DRIVER: 4739 case CMD_DELAYED_STOP_DRIVER: 4740 case CMD_DRIVER_START_TIMED_OUT: 4741 case CMD_START_AP: 4742 case CMD_START_AP_SUCCESS: 4743 case CMD_START_AP_FAILURE: 4744 case CMD_STOP_AP: 4745 case CMD_TETHER_STATE_CHANGE: 4746 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 4747 case CMD_DISCONNECT: 4748 case CMD_RECONNECT: 4749 case CMD_REASSOCIATE: 4750 case CMD_RELOAD_TLS_AND_RECONNECT: 4751 case WifiMonitor.SUP_CONNECTION_EVENT: 4752 case WifiMonitor.SUP_DISCONNECTION_EVENT: 4753 case WifiMonitor.NETWORK_CONNECTION_EVENT: 4754 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 4755 case WifiMonitor.SCAN_RESULTS_EVENT: 4756 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 4757 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 4758 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 4759 case WifiMonitor.WPS_OVERLAP_EVENT: 4760 case CMD_BLACKLIST_NETWORK: 4761 case CMD_CLEAR_BLACKLIST: 4762 case CMD_SET_OPERATIONAL_MODE: 4763 case CMD_SET_COUNTRY_CODE: 4764 case CMD_SET_FREQUENCY_BAND: 4765 case CMD_RSSI_POLL: 4766 case CMD_ENABLE_ALL_NETWORKS: 4767 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 4768 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 4769 /* Handled by WifiApConfigStore */ 4770 case CMD_SET_AP_CONFIG: 4771 case CMD_SET_AP_CONFIG_COMPLETED: 4772 case CMD_REQUEST_AP_CONFIG: 4773 case CMD_RESPONSE_AP_CONFIG: 4774 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 4775 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 4776 case CMD_NO_NETWORKS_PERIODIC_SCAN: 4777 case CMD_DISABLE_P2P_RSP: 4778 case WifiMonitor.SUP_REQUEST_IDENTITY: 4779 case CMD_TEST_NETWORK_DISCONNECT: 4780 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 4781 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 4782 case CMD_TARGET_BSSID: 4783 case CMD_AUTO_CONNECT: 4784 case CMD_AUTO_ROAM: 4785 case CMD_AUTO_SAVE_NETWORK: 4786 case CMD_ASSOCIATED_BSSID: 4787 case CMD_UNWANTED_NETWORK: 4788 case CMD_DISCONNECTING_WATCHDOG_TIMER: 4789 case CMD_ROAM_WATCHDOG_TIMER: 4790 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4791 break; 4792 case DhcpStateMachine.CMD_ON_QUIT: 4793 mDhcpStateMachine = null; 4794 break; 4795 case CMD_SET_SUSPEND_OPT_ENABLED: 4796 if (message.arg1 == 1) { 4797 mSuspendWakeLock.release(); 4798 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 4799 } else { 4800 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 4801 } 4802 break; 4803 case WifiMonitor.DRIVER_HUNG_EVENT: 4804 setSupplicantRunning(false); 4805 setSupplicantRunning(true); 4806 break; 4807 case WifiManager.CONNECT_NETWORK: 4808 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 4809 WifiManager.BUSY); 4810 break; 4811 case WifiManager.FORGET_NETWORK: 4812 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 4813 WifiManager.BUSY); 4814 break; 4815 case WifiManager.SAVE_NETWORK: 4816 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 4817 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 4818 WifiManager.BUSY); 4819 break; 4820 case WifiManager.START_WPS: 4821 replyToMessage(message, WifiManager.WPS_FAILED, 4822 WifiManager.BUSY); 4823 break; 4824 case WifiManager.CANCEL_WPS: 4825 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 4826 WifiManager.BUSY); 4827 break; 4828 case WifiManager.DISABLE_NETWORK: 4829 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 4830 WifiManager.BUSY); 4831 break; 4832 case WifiManager.RSSI_PKTCNT_FETCH: 4833 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 4834 WifiManager.BUSY); 4835 break; 4836 case CMD_GET_SUPPORTED_FEATURES: 4837 if (WifiNative.startHal()) { 4838 int featureSet = WifiNative.getSupportedFeatureSet(); 4839 replyToMessage(message, message.what, featureSet); 4840 } else { 4841 replyToMessage(message, message.what, 0); 4842 } 4843 break; 4844 case CMD_GET_LINK_LAYER_STATS: 4845 // Not supported hence reply with error message 4846 replyToMessage(message, message.what, null); 4847 break; 4848 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 4849 NetworkInfo info = (NetworkInfo) message.obj; 4850 mP2pConnected.set(info.isConnected()); 4851 break; 4852 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 4853 mTemporarilyDisconnectWifi = (message.arg1 == 1); 4854 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 4855 break; 4856 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 4857 case CMD_UPDATE_LINKPROPERTIES: 4858 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 4859 break; 4860 case CMD_IP_CONFIGURATION_SUCCESSFUL: 4861 case CMD_IP_CONFIGURATION_LOST: 4862 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4863 break; 4864 case CMD_GET_CONNECTION_STATISTICS: 4865 replyToMessage(message, message.what, mWifiConnectionStatistics); 4866 break; 4867 default: 4868 loge("Error! unhandled message" + message); 4869 break; 4870 } 4871 return HANDLED; 4872 } 4873 } 4874 4875 class InitialState extends State { 4876 @Override 4877 public void enter() { 4878 mWifiNative.unloadDriver(); 4879 4880 if (mWifiP2pChannel == null) { 4881 mWifiP2pChannel = new AsyncChannel(); 4882 mWifiP2pChannel.connect(mContext, getHandler(), 4883 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 4884 } 4885 4886 if (mWifiApConfigChannel == null) { 4887 mWifiApConfigChannel = new AsyncChannel(); 4888 WifiApConfigStore wifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 4889 mContext, getHandler()); 4890 wifiApConfigStore.loadApConfiguration(); 4891 mWifiApConfigChannel.connectSync(mContext, getHandler(), 4892 wifiApConfigStore.getMessenger()); 4893 } 4894 } 4895 @Override 4896 public boolean processMessage(Message message) { 4897 logStateAndMessage(message, getClass().getSimpleName()); 4898 switch (message.what) { 4899 case CMD_START_SUPPLICANT: 4900 if (mWifiNative.loadDriver()) { 4901 try { 4902 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 4903 } catch (Exception e) { 4904 loge("Failed to reload STA firmware " + e); 4905 // Continue 4906 } 4907 4908 try { 4909 // A runtime crash can leave the interface up and 4910 // IP addresses configured, and this affects 4911 // connectivity when supplicant starts up. 4912 // Ensure interface is down and we have no IP 4913 // addresses before a supplicant start. 4914 mNwService.setInterfaceDown(mInterfaceName); 4915 mNwService.clearInterfaceAddresses(mInterfaceName); 4916 4917 // Set privacy extensions 4918 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 4919 4920 // IPv6 is enabled only as long as access point is connected since: 4921 // - IPv6 addresses and routes stick around after disconnection 4922 // - kernel is unaware when connected and fails to start IPv6 negotiation 4923 // - kernel can start autoconfiguration when 802.1x is not complete 4924 mNwService.disableIpv6(mInterfaceName); 4925 } catch (RemoteException re) { 4926 loge("Unable to change interface settings: " + re); 4927 } catch (IllegalStateException ie) { 4928 loge("Unable to change interface settings: " + ie); 4929 } 4930 4931 /* Stop a running supplicant after a runtime restart 4932 * Avoids issues with drivers that do not handle interface down 4933 * on a running supplicant properly. 4934 */ 4935 mWifiMonitor.killSupplicant(mP2pSupported); 4936 if(mWifiNative.startSupplicant(mP2pSupported)) { 4937 setWifiState(WIFI_STATE_ENABLING); 4938 if (DBG) log("Supplicant start successful"); 4939 mWifiMonitor.startMonitoring(); 4940 transitionTo(mSupplicantStartingState); 4941 } else { 4942 loge("Failed to start supplicant!"); 4943 } 4944 } else { 4945 loge("Failed to load driver"); 4946 } 4947 break; 4948 case CMD_START_AP: 4949 if (mWifiNative.loadDriver()) { 4950 setWifiApState(WIFI_AP_STATE_ENABLING); 4951 transitionTo(mSoftApStartingState); 4952 } else { 4953 loge("Failed to load driver for softap"); 4954 } 4955 default: 4956 return NOT_HANDLED; 4957 } 4958 return HANDLED; 4959 } 4960 } 4961 4962 class SupplicantStartingState extends State { 4963 private void initializeWpsDetails() { 4964 String detail; 4965 detail = SystemProperties.get("ro.product.name", ""); 4966 if (!mWifiNative.setDeviceName(detail)) { 4967 loge("Failed to set device name " + detail); 4968 } 4969 detail = SystemProperties.get("ro.product.manufacturer", ""); 4970 if (!mWifiNative.setManufacturer(detail)) { 4971 loge("Failed to set manufacturer " + detail); 4972 } 4973 detail = SystemProperties.get("ro.product.model", ""); 4974 if (!mWifiNative.setModelName(detail)) { 4975 loge("Failed to set model name " + detail); 4976 } 4977 detail = SystemProperties.get("ro.product.model", ""); 4978 if (!mWifiNative.setModelNumber(detail)) { 4979 loge("Failed to set model number " + detail); 4980 } 4981 detail = SystemProperties.get("ro.serialno", ""); 4982 if (!mWifiNative.setSerialNumber(detail)) { 4983 loge("Failed to set serial number " + detail); 4984 } 4985 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 4986 loge("Failed to set WPS config methods"); 4987 } 4988 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 4989 loge("Failed to set primary device type " + mPrimaryDeviceType); 4990 } 4991 } 4992 4993 @Override 4994 public boolean processMessage(Message message) { 4995 logStateAndMessage(message, getClass().getSimpleName()); 4996 4997 switch(message.what) { 4998 case WifiMonitor.SUP_CONNECTION_EVENT: 4999 if (DBG) log("Supplicant connection established"); 5000 setWifiState(WIFI_STATE_ENABLED); 5001 mSupplicantRestartCount = 0; 5002 /* Reset the supplicant state to indicate the supplicant 5003 * state is not known at this time */ 5004 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5005 /* Initialize data structures */ 5006 mLastBssid = null; 5007 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5008 mLastSignalLevel = -1; 5009 5010 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5011 mWifiNative.enableSaveConfig(); 5012 mWifiConfigStore.loadAndEnableAllNetworks(); 5013 if (mWifiConfigStore.enableVerboseLogging > 0) { 5014 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging); 5015 } 5016 if (mWifiConfigStore.associatedPartialScanPeriodMilli < 0) { 5017 mWifiConfigStore.associatedPartialScanPeriodMilli = 0; 5018 } 5019 initializeWpsDetails(); 5020 5021 sendSupplicantConnectionChangedBroadcast(true); 5022 transitionTo(mDriverStartedState); 5023 break; 5024 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5025 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5026 loge("Failed to setup control channel, restart supplicant"); 5027 mWifiMonitor.killSupplicant(mP2pSupported); 5028 transitionTo(mInitialState); 5029 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5030 } else { 5031 loge("Failed " + mSupplicantRestartCount + 5032 " times to start supplicant, unload driver"); 5033 mSupplicantRestartCount = 0; 5034 setWifiState(WIFI_STATE_UNKNOWN); 5035 transitionTo(mInitialState); 5036 } 5037 break; 5038 case CMD_START_SUPPLICANT: 5039 case CMD_STOP_SUPPLICANT: 5040 case CMD_START_AP: 5041 case CMD_STOP_AP: 5042 case CMD_START_DRIVER: 5043 case CMD_STOP_DRIVER: 5044 case CMD_SET_OPERATIONAL_MODE: 5045 case CMD_SET_COUNTRY_CODE: 5046 case CMD_SET_FREQUENCY_BAND: 5047 case CMD_START_PACKET_FILTERING: 5048 case CMD_STOP_PACKET_FILTERING: 5049 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5050 deferMessage(message); 5051 break; 5052 default: 5053 return NOT_HANDLED; 5054 } 5055 return HANDLED; 5056 } 5057 } 5058 5059 class SupplicantStartedState extends State { 5060 @Override 5061 public void enter() { 5062 /* Wifi is available as long as we have a connection to supplicant */ 5063 mNetworkInfo.setIsAvailable(true); 5064 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5065 5066 int defaultInterval = mContext.getResources().getInteger( 5067 R.integer.config_wifi_supplicant_scan_interval); 5068 5069 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5070 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5071 defaultInterval); 5072 5073 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5074 mWifiNative.setExternalSim(true); 5075 5076 setRandomMacOui(); 5077 mWifiNative.enableAutoConnect(false); 5078 } 5079 5080 @Override 5081 public boolean processMessage(Message message) { 5082 logStateAndMessage(message, getClass().getSimpleName()); 5083 5084 switch(message.what) { 5085 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5086 if (mP2pSupported) { 5087 transitionTo(mWaitForP2pDisableState); 5088 } else { 5089 transitionTo(mSupplicantStoppingState); 5090 } 5091 break; 5092 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5093 loge("Connection lost, restart supplicant"); 5094 handleSupplicantConnectionLoss(); 5095 handleNetworkDisconnect(); 5096 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5097 if (mP2pSupported) { 5098 transitionTo(mWaitForP2pDisableState); 5099 } else { 5100 transitionTo(mInitialState); 5101 } 5102 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5103 break; 5104 case WifiMonitor.SCAN_RESULTS_EVENT: 5105 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5106 closeRadioScanStats(); 5107 noteScanEnd(); 5108 setScanResults(); 5109 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5110 /* Just updated results from full scan, let apps know about this */ 5111 sendScanResultsAvailableBroadcast(); 5112 } 5113 mSendScanResultsBroadcast = false; 5114 mIsScanOngoing = false; 5115 mIsFullScanOngoing = false; 5116 if (mBufferedScanMsg.size() > 0) 5117 sendMessage(mBufferedScanMsg.remove()); 5118 break; 5119 case CMD_PING_SUPPLICANT: 5120 boolean ok = mWifiNative.ping(); 5121 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5122 break; 5123 case CMD_GET_CAPABILITY_FREQ: 5124 String freqs = mWifiNative.getFreqCapability(); 5125 replyToMessage(message, message.what, freqs); 5126 break; 5127 case CMD_START_AP: 5128 /* Cannot start soft AP while in client mode */ 5129 loge("Failed to start soft AP with a running supplicant"); 5130 setWifiApState(WIFI_AP_STATE_FAILED); 5131 break; 5132 case CMD_SET_OPERATIONAL_MODE: 5133 mOperationalMode = message.arg1; 5134 mWifiConfigStore. 5135 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5136 break; 5137 case CMD_TARGET_BSSID: 5138 // Trying to associate to this BSSID 5139 if (message.obj != null) { 5140 mTargetRoamBSSID = (String) message.obj; 5141 } 5142 break; 5143 case CMD_GET_LINK_LAYER_STATS: 5144 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5145 if (stats == null) { 5146 // When firmware doesnt support link layer stats, return an empty object 5147 stats = new WifiLinkLayerStats(); 5148 } 5149 replyToMessage(message, message.what, stats); 5150 break; 5151 default: 5152 return NOT_HANDLED; 5153 } 5154 return HANDLED; 5155 } 5156 5157 @Override 5158 public void exit() { 5159 mNetworkInfo.setIsAvailable(false); 5160 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5161 } 5162 } 5163 5164 class SupplicantStoppingState extends State { 5165 @Override 5166 public void enter() { 5167 /* Send any reset commands to supplicant before shutting it down */ 5168 handleNetworkDisconnect(); 5169 if (mDhcpStateMachine != null) { 5170 mDhcpStateMachine.doQuit(); 5171 } 5172 5173 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5174 if (suppState == null) suppState = "unknown"; 5175 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5176 if (p2pSuppState == null) p2pSuppState = "unknown"; 5177 5178 loge("SupplicantStoppingState: stopSupplicant " 5179 + " init.svc.wpa_supplicant=" + suppState 5180 + " init.svc.p2p_supplicant=" + p2pSuppState); 5181 mWifiMonitor.stopSupplicant(); 5182 5183 /* Send ourselves a delayed message to indicate failure after a wait time */ 5184 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5185 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5186 setWifiState(WIFI_STATE_DISABLING); 5187 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5188 } 5189 @Override 5190 public boolean processMessage(Message message) { 5191 logStateAndMessage(message, getClass().getSimpleName()); 5192 5193 switch(message.what) { 5194 case WifiMonitor.SUP_CONNECTION_EVENT: 5195 loge("Supplicant connection received while stopping"); 5196 break; 5197 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5198 if (DBG) log("Supplicant connection lost"); 5199 handleSupplicantConnectionLoss(); 5200 transitionTo(mInitialState); 5201 break; 5202 case CMD_STOP_SUPPLICANT_FAILED: 5203 if (message.arg1 == mSupplicantStopFailureToken) { 5204 loge("Timed out on a supplicant stop, kill and proceed"); 5205 handleSupplicantConnectionLoss(); 5206 transitionTo(mInitialState); 5207 } 5208 break; 5209 case CMD_START_SUPPLICANT: 5210 case CMD_STOP_SUPPLICANT: 5211 case CMD_START_AP: 5212 case CMD_STOP_AP: 5213 case CMD_START_DRIVER: 5214 case CMD_STOP_DRIVER: 5215 case CMD_SET_OPERATIONAL_MODE: 5216 case CMD_SET_COUNTRY_CODE: 5217 case CMD_SET_FREQUENCY_BAND: 5218 case CMD_START_PACKET_FILTERING: 5219 case CMD_STOP_PACKET_FILTERING: 5220 deferMessage(message); 5221 break; 5222 default: 5223 return NOT_HANDLED; 5224 } 5225 return HANDLED; 5226 } 5227 } 5228 5229 class DriverStartingState extends State { 5230 private int mTries; 5231 @Override 5232 public void enter() { 5233 mTries = 1; 5234 /* Send ourselves a delayed message to start driver a second time */ 5235 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5236 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5237 } 5238 @Override 5239 public boolean processMessage(Message message) { 5240 logStateAndMessage(message, getClass().getSimpleName()); 5241 5242 switch(message.what) { 5243 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5244 SupplicantState state = handleSupplicantStateChange(message); 5245 /* If suplicant is exiting out of INTERFACE_DISABLED state into 5246 * a state that indicates driver has started, it is ready to 5247 * receive driver commands 5248 */ 5249 if (SupplicantState.isDriverActive(state)) { 5250 transitionTo(mDriverStartedState); 5251 } 5252 break; 5253 case CMD_DRIVER_START_TIMED_OUT: 5254 if (message.arg1 == mDriverStartToken) { 5255 if (mTries >= 2) { 5256 loge("Failed to start driver after " + mTries); 5257 transitionTo(mDriverStoppedState); 5258 } else { 5259 loge("Driver start failed, retrying"); 5260 mWakeLock.acquire(); 5261 mWifiNative.startDriver(); 5262 mWakeLock.release(); 5263 5264 ++mTries; 5265 /* Send ourselves a delayed message to start driver again */ 5266 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5267 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5268 } 5269 } 5270 break; 5271 /* Queue driver commands & connection events */ 5272 case CMD_START_DRIVER: 5273 case CMD_STOP_DRIVER: 5274 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5275 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5276 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5277 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5278 case WifiMonitor.WPS_OVERLAP_EVENT: 5279 case CMD_SET_COUNTRY_CODE: 5280 case CMD_SET_FREQUENCY_BAND: 5281 case CMD_START_PACKET_FILTERING: 5282 case CMD_STOP_PACKET_FILTERING: 5283 case CMD_START_SCAN: 5284 case CMD_DISCONNECT: 5285 case CMD_REASSOCIATE: 5286 case CMD_RECONNECT: 5287 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5288 deferMessage(message); 5289 break; 5290 case WifiMonitor.SCAN_RESULTS_EVENT: 5291 // Loose scan results obtained in Driver Starting state, they can only confuse 5292 // the state machine 5293 break; 5294 default: 5295 return NOT_HANDLED; 5296 } 5297 return HANDLED; 5298 } 5299 } 5300 5301 class DriverStartedState extends State { 5302 @Override 5303 public void enter() { 5304 5305 if (PDBG) { 5306 loge("DriverStartedState enter"); 5307 } 5308 mIsRunning = true; 5309 mInDelayedStop = false; 5310 mDelayedStopCounter++; 5311 updateBatteryWorkSource(null); 5312 /** 5313 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 5314 * When this mode is on, some of the low-level scan parameters used by the 5315 * driver are changed to reduce interference with bluetooth 5316 */ 5317 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5318 /* set country code */ 5319 setCountryCode(); 5320 /* set frequency band of operation */ 5321 setFrequencyBand(); 5322 /* initialize network state */ 5323 setNetworkDetailedState(DetailedState.DISCONNECTED); 5324 5325 /* Remove any filtering on Multicast v6 at start */ 5326 mWifiNative.stopFilteringMulticastV6Packets(); 5327 5328 /* Reset Multicast v4 filtering state */ 5329 if (mFilteringMulticastV4Packets.get()) { 5330 mWifiNative.startFilteringMulticastV4Packets(); 5331 } else { 5332 mWifiNative.stopFilteringMulticastV4Packets(); 5333 } 5334 5335 mDhcpActive = false; 5336 5337 startBatchedScan(); 5338 5339 if (mOperationalMode != CONNECT_MODE) { 5340 mWifiNative.disconnect(); 5341 mWifiConfigStore.disableAllNetworks(); 5342 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5343 setWifiState(WIFI_STATE_DISABLED); 5344 } 5345 transitionTo(mScanModeState); 5346 } else { 5347 5348 // Status pulls in the current supplicant state and network connection state 5349 // events over the monitor connection. This helps framework sync up with 5350 // current supplicant state 5351 // TODO: actually check th supplicant status string and make sure the supplicant 5352 // is in disconnecte4d state. 5353 mWifiNative.status(); 5354 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 5355 transitionTo(mDisconnectedState); 5356 } 5357 5358 // We may have missed screen update at boot 5359 if (mScreenBroadcastReceived.get() == false) { 5360 PowerManager powerManager = (PowerManager)mContext.getSystemService( 5361 Context.POWER_SERVICE); 5362 handleScreenStateChanged(powerManager.isScreenOn(), 5363 /* startBackgroundScanIfNeeded = */ false); 5364 } else { 5365 // Set the right suspend mode settings 5366 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 5367 && mUserWantsSuspendOpt.get()); 5368 } 5369 mWifiNative.setPowerSave(true); 5370 5371 if (mP2pSupported) { 5372 if (mOperationalMode == CONNECT_MODE) { 5373 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 5374 } else { 5375 // P2P statemachine starts in disabled state, and is not enabled until 5376 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 5377 // keep it disabled. 5378 } 5379 } 5380 5381 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5382 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5383 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 5384 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5385 5386 if (PDBG) { 5387 loge("Driverstarted State enter done"); 5388 } 5389 } 5390 5391 @Override 5392 public boolean processMessage(Message message) { 5393 logStateAndMessage(message, getClass().getSimpleName()); 5394 5395 switch(message.what) { 5396 case CMD_START_SCAN: 5397 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5398 break; 5399 case CMD_SET_BATCHED_SCAN: 5400 if (recordBatchedScanSettings(message.arg1, message.arg2, 5401 (Bundle)message.obj)) { 5402 if (mBatchedScanSettings != null) { 5403 startBatchedScan(); 5404 } else { 5405 stopBatchedScan(); 5406 } 5407 } 5408 break; 5409 case CMD_SET_COUNTRY_CODE: 5410 String country = (String) message.obj; 5411 final boolean persist = (message.arg2 == 1); 5412 final int sequence = message.arg1; 5413 if (sequence != mCountryCodeSequence.get()) { 5414 if (DBG) log("set country code ignored due to sequnce num"); 5415 break; 5416 } 5417 if (DBG) log("set country code " + country); 5418 if (persist) { 5419 mPersistedCountryCode = country; 5420 Settings.Global.putString(mContext.getContentResolver(), 5421 Settings.Global.WIFI_COUNTRY_CODE, 5422 country); 5423 } 5424 country = country.toUpperCase(Locale.ROOT); 5425 if (mLastSetCountryCode == null 5426 || country.equals(mLastSetCountryCode) == false) { 5427 if (mWifiNative.setCountryCode(country)) { 5428 mLastSetCountryCode = country; 5429 } else { 5430 loge("Failed to set country code " + country); 5431 } 5432 } 5433 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5434 break; 5435 case CMD_SET_FREQUENCY_BAND: 5436 int band = message.arg1; 5437 if (DBG) log("set frequency band " + band); 5438 if (mWifiNative.setBand(band)) { 5439 5440 if (PDBG) loge("did set frequency band " + band); 5441 5442 mFrequencyBand.set(band); 5443 // Flush old data - like scan results 5444 mWifiNative.bssFlush(); 5445 // Fetch the latest scan results when frequency band is set 5446 startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 5447 5448 if (PDBG) loge("done set frequency band " + band); 5449 5450 } else { 5451 loge("Failed to set frequency band " + band); 5452 } 5453 break; 5454 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5455 mBluetoothConnectionActive = (message.arg1 != 5456 BluetoothAdapter.STATE_DISCONNECTED); 5457 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5458 break; 5459 case CMD_STOP_DRIVER: 5460 int mode = message.arg1; 5461 5462 /* Already doing a delayed stop */ 5463 if (mInDelayedStop) { 5464 if (DBG) log("Already in delayed stop"); 5465 break; 5466 } 5467 /* disconnect right now, but leave the driver running for a bit */ 5468 mWifiConfigStore.disableAllNetworks(); 5469 5470 mInDelayedStop = true; 5471 mDelayedStopCounter++; 5472 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 5473 5474 /* send regular delayed shut down */ 5475 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 5476 driverStopIntent.setPackage(this.getClass().getPackage().getName()); 5477 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 5478 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 5479 DRIVER_STOP_REQUEST, driverStopIntent, 5480 PendingIntent.FLAG_UPDATE_CURRENT); 5481 5482 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 5483 + mDriverStopDelayMs, mDriverStopIntent); 5484 break; 5485 case CMD_START_DRIVER: 5486 if (mInDelayedStop) { 5487 mInDelayedStop = false; 5488 mDelayedStopCounter++; 5489 mAlarmManager.cancel(mDriverStopIntent); 5490 if (DBG) log("Delayed stop ignored due to start"); 5491 if (mOperationalMode == CONNECT_MODE) { 5492 mWifiConfigStore.enableAllNetworks(); 5493 } 5494 } 5495 break; 5496 case CMD_DELAYED_STOP_DRIVER: 5497 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 5498 if (message.arg1 != mDelayedStopCounter) break; 5499 if (getCurrentState() != mDisconnectedState) { 5500 mWifiNative.disconnect(); 5501 handleNetworkDisconnect(); 5502 } 5503 mWakeLock.acquire(); 5504 mWifiNative.stopDriver(); 5505 mWakeLock.release(); 5506 if (mP2pSupported) { 5507 transitionTo(mWaitForP2pDisableState); 5508 } else { 5509 transitionTo(mDriverStoppingState); 5510 } 5511 break; 5512 case CMD_START_PACKET_FILTERING: 5513 if (message.arg1 == MULTICAST_V6) { 5514 mWifiNative.startFilteringMulticastV6Packets(); 5515 } else if (message.arg1 == MULTICAST_V4) { 5516 mWifiNative.startFilteringMulticastV4Packets(); 5517 } else { 5518 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 5519 } 5520 break; 5521 case CMD_STOP_PACKET_FILTERING: 5522 if (message.arg1 == MULTICAST_V6) { 5523 mWifiNative.stopFilteringMulticastV6Packets(); 5524 } else if (message.arg1 == MULTICAST_V4) { 5525 mWifiNative.stopFilteringMulticastV4Packets(); 5526 } else { 5527 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 5528 } 5529 break; 5530 case CMD_SET_SUSPEND_OPT_ENABLED: 5531 if (message.arg1 == 1) { 5532 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 5533 mSuspendWakeLock.release(); 5534 } else { 5535 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 5536 } 5537 break; 5538 case CMD_SET_HIGH_PERF_MODE: 5539 if (message.arg1 == 1) { 5540 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 5541 } else { 5542 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 5543 } 5544 break; 5545 case CMD_ENABLE_TDLS: 5546 if (message.obj != null) { 5547 String remoteAddress = (String) message.obj; 5548 boolean enable = (message.arg1 == 1); 5549 mWifiNative.startTdls(remoteAddress, enable); 5550 } 5551 break; 5552 default: 5553 return NOT_HANDLED; 5554 } 5555 return HANDLED; 5556 } 5557 @Override 5558 public void exit() { 5559 mIsRunning = false; 5560 updateBatteryWorkSource(null); 5561 mScanResults = new ArrayList<ScanResult>(); 5562 5563 stopBatchedScan(); 5564 5565 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5566 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5567 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 5568 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5569 noteScanEnd(); // wrap up any pending request. 5570 mBufferedScanMsg.clear(); 5571 5572 mLastSetCountryCode = null; 5573 } 5574 } 5575 5576 class WaitForP2pDisableState extends State { 5577 private State mTransitionToState; 5578 @Override 5579 public void enter() { 5580 switch (getCurrentMessage().what) { 5581 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5582 mTransitionToState = mInitialState; 5583 break; 5584 case CMD_DELAYED_STOP_DRIVER: 5585 mTransitionToState = mDriverStoppingState; 5586 break; 5587 case CMD_STOP_SUPPLICANT: 5588 mTransitionToState = mSupplicantStoppingState; 5589 break; 5590 default: 5591 mTransitionToState = mDriverStoppingState; 5592 break; 5593 } 5594 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 5595 } 5596 @Override 5597 public boolean processMessage(Message message) { 5598 logStateAndMessage(message, getClass().getSimpleName()); 5599 5600 switch(message.what) { 5601 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 5602 transitionTo(mTransitionToState); 5603 break; 5604 /* Defer wifi start/shut and driver commands */ 5605 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5606 case CMD_START_SUPPLICANT: 5607 case CMD_STOP_SUPPLICANT: 5608 case CMD_START_AP: 5609 case CMD_STOP_AP: 5610 case CMD_START_DRIVER: 5611 case CMD_STOP_DRIVER: 5612 case CMD_SET_OPERATIONAL_MODE: 5613 case CMD_SET_COUNTRY_CODE: 5614 case CMD_SET_FREQUENCY_BAND: 5615 case CMD_START_PACKET_FILTERING: 5616 case CMD_STOP_PACKET_FILTERING: 5617 case CMD_START_SCAN: 5618 case CMD_DISCONNECT: 5619 case CMD_REASSOCIATE: 5620 case CMD_RECONNECT: 5621 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5622 deferMessage(message); 5623 break; 5624 default: 5625 return NOT_HANDLED; 5626 } 5627 return HANDLED; 5628 } 5629 } 5630 5631 class DriverStoppingState extends State { 5632 @Override 5633 public boolean processMessage(Message message) { 5634 logStateAndMessage(message, getClass().getSimpleName()); 5635 5636 switch(message.what) { 5637 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5638 SupplicantState state = handleSupplicantStateChange(message); 5639 if (state == SupplicantState.INTERFACE_DISABLED) { 5640 transitionTo(mDriverStoppedState); 5641 } 5642 break; 5643 /* Queue driver commands */ 5644 case CMD_START_DRIVER: 5645 case CMD_STOP_DRIVER: 5646 case CMD_SET_COUNTRY_CODE: 5647 case CMD_SET_FREQUENCY_BAND: 5648 case CMD_START_PACKET_FILTERING: 5649 case CMD_STOP_PACKET_FILTERING: 5650 case CMD_START_SCAN: 5651 case CMD_DISCONNECT: 5652 case CMD_REASSOCIATE: 5653 case CMD_RECONNECT: 5654 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5655 deferMessage(message); 5656 break; 5657 default: 5658 return NOT_HANDLED; 5659 } 5660 return HANDLED; 5661 } 5662 } 5663 5664 class DriverStoppedState extends State { 5665 @Override 5666 public boolean processMessage(Message message) { 5667 logStateAndMessage(message, getClass().getSimpleName()); 5668 switch (message.what) { 5669 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5670 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 5671 SupplicantState state = stateChangeResult.state; 5672 // A WEXT bug means that we can be back to driver started state 5673 // unexpectedly 5674 if (SupplicantState.isDriverActive(state)) { 5675 transitionTo(mDriverStartedState); 5676 } 5677 break; 5678 case CMD_START_DRIVER: 5679 mWakeLock.acquire(); 5680 mWifiNative.startDriver(); 5681 mWakeLock.release(); 5682 transitionTo(mDriverStartingState); 5683 break; 5684 default: 5685 return NOT_HANDLED; 5686 } 5687 return HANDLED; 5688 } 5689 } 5690 5691 class ScanModeState extends State { 5692 private int mLastOperationMode; 5693 @Override 5694 public void enter() { 5695 mLastOperationMode = mOperationalMode; 5696 } 5697 @Override 5698 public boolean processMessage(Message message) { 5699 logStateAndMessage(message, getClass().getSimpleName()); 5700 5701 switch(message.what) { 5702 case CMD_SET_OPERATIONAL_MODE: 5703 if (message.arg1 == CONNECT_MODE) { 5704 5705 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5706 setWifiState(WIFI_STATE_ENABLED); 5707 // Load and re-enable networks when going back to enabled state 5708 // This is essential for networks to show up after restore 5709 mWifiConfigStore.loadAndEnableAllNetworks(); 5710 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 5711 } else { 5712 mWifiConfigStore.enableAllNetworks(); 5713 } 5714 5715 // Try autojoining with recent network already present in the cache 5716 // If none are found then trigger a scan which will trigger autojoin 5717 // upon reception of scan results event 5718 if (!mWifiAutoJoinController.attemptAutoJoin()) { 5719 startScan(ENABLE_WIFI, 0, null, null); 5720 } 5721 5722 // Loose last selection choice since user toggled WiFi 5723 mWifiConfigStore. 5724 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5725 5726 mOperationalMode = CONNECT_MODE; 5727 transitionTo(mDisconnectedState); 5728 } else { 5729 // Nothing to do 5730 return HANDLED; 5731 } 5732 break; 5733 // Handle scan. All the connection related commands are 5734 // handled only in ConnectModeState 5735 case CMD_START_SCAN: 5736 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5737 break; 5738 default: 5739 return NOT_HANDLED; 5740 } 5741 return HANDLED; 5742 } 5743 } 5744 5745 5746 String smToString(Message message) { 5747 return smToString(message.what); 5748 } 5749 5750 String smToString(int what) { 5751 String s = "unknown"; 5752 switch (what) { 5753 case WifiMonitor.DRIVER_HUNG_EVENT: 5754 s = "DRIVER_HUNG_EVENT"; 5755 break; 5756 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 5757 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 5758 break; 5759 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 5760 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 5761 break; 5762 case CMD_SET_FREQUENCY_BAND: 5763 s = "CMD_SET_FREQUENCY_BAND"; 5764 break; 5765 case CMD_DELAYED_NETWORK_DISCONNECT: 5766 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 5767 break; 5768 case CMD_TEST_NETWORK_DISCONNECT: 5769 s = "CMD_TEST_NETWORK_DISCONNECT"; 5770 break; 5771 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5772 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 5773 break; 5774 case CMD_START_DRIVER: 5775 s = "CMD_START_DRIVER"; 5776 break; 5777 case CMD_STOP_DRIVER: 5778 s = "CMD_STOP_DRIVER"; 5779 break; 5780 case CMD_STOP_SUPPLICANT: 5781 s = "CMD_STOP_SUPPLICANT"; 5782 break; 5783 case CMD_STOP_SUPPLICANT_FAILED: 5784 s = "CMD_STOP_SUPPLICANT_FAILED"; 5785 break; 5786 case CMD_START_SUPPLICANT: 5787 s = "CMD_START_SUPPLICANT"; 5788 break; 5789 case CMD_REQUEST_AP_CONFIG: 5790 s = "CMD_REQUEST_AP_CONFIG"; 5791 break; 5792 case CMD_RESPONSE_AP_CONFIG: 5793 s = "CMD_RESPONSE_AP_CONFIG"; 5794 break; 5795 case CMD_TETHER_STATE_CHANGE: 5796 s = "CMD_TETHER_STATE_CHANGE"; 5797 break; 5798 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5799 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 5800 break; 5801 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5802 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 5803 break; 5804 case CMD_ADD_OR_UPDATE_NETWORK: 5805 s = "CMD_ADD_OR_UPDATE_NETWORK"; 5806 break; 5807 case CMD_REMOVE_NETWORK: 5808 s = "CMD_REMOVE_NETWORK"; 5809 break; 5810 case CMD_ENABLE_NETWORK: 5811 s = "CMD_ENABLE_NETWORK"; 5812 break; 5813 case CMD_ENABLE_ALL_NETWORKS: 5814 s = "CMD_ENABLE_ALL_NETWORKS"; 5815 break; 5816 case CMD_AUTO_CONNECT: 5817 s = "CMD_AUTO_CONNECT"; 5818 break; 5819 case CMD_AUTO_ROAM: 5820 s = "CMD_AUTO_ROAM"; 5821 break; 5822 case CMD_AUTO_SAVE_NETWORK: 5823 s = "CMD_AUTO_SAVE_NETWORK"; 5824 break; 5825 case CMD_BOOT_COMPLETED: 5826 s = "CMD_BOOT_COMPLETED"; 5827 break; 5828 case DhcpStateMachine.CMD_START_DHCP: 5829 s = "CMD_START_DHCP"; 5830 break; 5831 case DhcpStateMachine.CMD_STOP_DHCP: 5832 s = "CMD_STOP_DHCP"; 5833 break; 5834 case DhcpStateMachine.CMD_RENEW_DHCP: 5835 s = "CMD_RENEW_DHCP"; 5836 break; 5837 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5838 s = "CMD_PRE_DHCP_ACTION"; 5839 break; 5840 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5841 s = "CMD_POST_DHCP_ACTION"; 5842 break; 5843 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 5844 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 5845 break; 5846 case DhcpStateMachine.CMD_ON_QUIT: 5847 s = "CMD_ON_QUIT"; 5848 break; 5849 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5850 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 5851 break; 5852 case WifiManager.DISABLE_NETWORK: 5853 s = "WifiManager.DISABLE_NETWORK"; 5854 break; 5855 case CMD_BLACKLIST_NETWORK: 5856 s = "CMD_BLACKLIST_NETWORK"; 5857 break; 5858 case CMD_CLEAR_BLACKLIST: 5859 s = "CMD_CLEAR_BLACKLIST"; 5860 break; 5861 case CMD_SAVE_CONFIG: 5862 s = "CMD_SAVE_CONFIG"; 5863 break; 5864 case CMD_GET_CONFIGURED_NETWORKS: 5865 s = "CMD_GET_CONFIGURED_NETWORKS"; 5866 break; 5867 case CMD_GET_SUPPORTED_FEATURES: 5868 s = "CMD_GET_ADAPTORS"; 5869 break; 5870 case CMD_UNWANTED_NETWORK: 5871 s = "CMD_UNWANTED_NETWORK"; 5872 break; 5873 case CMD_NETWORK_STATUS: 5874 s = "CMD_NETWORK_STATUS"; 5875 break; 5876 case CMD_GET_LINK_LAYER_STATS: 5877 s = "CMD_GET_LINK_LAYER_STATS"; 5878 break; 5879 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5880 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 5881 break; 5882 case CMD_DISCONNECT: 5883 s = "CMD_DISCONNECT"; 5884 break; 5885 case CMD_RECONNECT: 5886 s = "CMD_RECONNECT"; 5887 break; 5888 case CMD_REASSOCIATE: 5889 s = "CMD_REASSOCIATE"; 5890 break; 5891 case CMD_GET_CONNECTION_STATISTICS: 5892 s = "CMD_GET_CONNECTION_STATISTICS"; 5893 break; 5894 case CMD_SET_HIGH_PERF_MODE: 5895 s = "CMD_SET_HIGH_PERF_MODE"; 5896 break; 5897 case CMD_SET_COUNTRY_CODE: 5898 s = "CMD_SET_COUNTRY_CODE"; 5899 break; 5900 case CMD_ENABLE_RSSI_POLL: 5901 s = "CMD_ENABLE_RSSI_POLL"; 5902 break; 5903 case CMD_RSSI_POLL: 5904 s = "CMD_RSSI_POLL"; 5905 break; 5906 case CMD_START_PACKET_FILTERING: 5907 s = "CMD_START_PACKET_FILTERING"; 5908 break; 5909 case CMD_STOP_PACKET_FILTERING: 5910 s = "CMD_STOP_PACKET_FILTERING"; 5911 break; 5912 case CMD_SET_SUSPEND_OPT_ENABLED: 5913 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 5914 break; 5915 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5916 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 5917 break; 5918 case CMD_SET_BATCHED_SCAN: 5919 s = "CMD_SET_BATCHED_SCAN"; 5920 break; 5921 case CMD_START_NEXT_BATCHED_SCAN: 5922 s = "CMD_START_NEXT_BATCHED_SCAN"; 5923 break; 5924 case CMD_POLL_BATCHED_SCAN: 5925 s = "CMD_POLL_BATCHED_SCAN"; 5926 break; 5927 case CMD_UPDATE_LINKPROPERTIES: 5928 s = "CMD_UPDATE_LINKPROPERTIES"; 5929 break; 5930 case CMD_RELOAD_TLS_AND_RECONNECT: 5931 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 5932 break; 5933 case WifiManager.CONNECT_NETWORK: 5934 s = "CONNECT_NETWORK"; 5935 break; 5936 case WifiManager.SAVE_NETWORK: 5937 s = "SAVE_NETWORK"; 5938 break; 5939 case WifiManager.FORGET_NETWORK: 5940 s = "FORGET_NETWORK"; 5941 break; 5942 case WifiMonitor.SUP_CONNECTION_EVENT: 5943 s = "SUP_CONNECTION_EVENT"; 5944 break; 5945 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5946 s = "SUP_DISCONNECTION_EVENT"; 5947 break; 5948 case WifiMonitor.SCAN_RESULTS_EVENT: 5949 s = "SCAN_RESULTS_EVENT"; 5950 break; 5951 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5952 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 5953 break; 5954 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5955 s = "AUTHENTICATION_FAILURE_EVENT"; 5956 break; 5957 case WifiMonitor.SSID_TEMP_DISABLED: 5958 s = "SSID_TEMP_DISABLED"; 5959 break; 5960 case WifiMonitor.SSID_REENABLED: 5961 s = "SSID_REENABLED"; 5962 break; 5963 case WifiMonitor.WPS_SUCCESS_EVENT: 5964 s = "WPS_SUCCESS_EVENT"; 5965 break; 5966 case WifiMonitor.WPS_FAIL_EVENT: 5967 s = "WPS_FAIL_EVENT"; 5968 break; 5969 case WifiMonitor.SUP_REQUEST_IDENTITY: 5970 s = "SUP_REQUEST_IDENTITY"; 5971 break; 5972 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5973 s = "NETWORK_CONNECTION_EVENT"; 5974 break; 5975 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5976 s = "NETWORK_DISCONNECTION_EVENT"; 5977 break; 5978 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5979 s = "ASSOCIATION_REJECTION_EVENT"; 5980 break; 5981 case CMD_SET_OPERATIONAL_MODE: 5982 s = "CMD_SET_OPERATIONAL_MODE"; 5983 break; 5984 case CMD_START_SCAN: 5985 s = "CMD_START_SCAN"; 5986 break; 5987 case CMD_DISABLE_P2P_RSP: 5988 s = "CMD_DISABLE_P2P_RSP"; 5989 break; 5990 case CMD_DISABLE_P2P_REQ: 5991 s = "CMD_DISABLE_P2P_REQ"; 5992 break; 5993 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5994 s = "GOOD_LINK_DETECTED"; 5995 break; 5996 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5997 s = "POOR_LINK_DETECTED"; 5998 break; 5999 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6000 s = "GROUP_CREATING_TIMED_OUT"; 6001 break; 6002 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6003 s = "P2P_CONNECTION_CHANGED"; 6004 break; 6005 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6006 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6007 break; 6008 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6009 s = "P2P.SET_MIRACAST_MODE"; 6010 break; 6011 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6012 s = "P2P.BLOCK_DISCOVERY"; 6013 break; 6014 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6015 s = "P2P.SET_COUNTRY_CODE"; 6016 break; 6017 case WifiManager.CANCEL_WPS: 6018 s = "CANCEL_WPS"; 6019 break; 6020 case WifiManager.CANCEL_WPS_FAILED: 6021 s = "CANCEL_WPS_FAILED"; 6022 break; 6023 case WifiManager.CANCEL_WPS_SUCCEDED: 6024 s = "CANCEL_WPS_SUCCEDED"; 6025 break; 6026 case WifiManager.START_WPS: 6027 s = "START_WPS"; 6028 break; 6029 case WifiManager.START_WPS_SUCCEEDED: 6030 s = "START_WPS_SUCCEEDED"; 6031 break; 6032 case WifiManager.WPS_FAILED: 6033 s = "WPS_FAILED"; 6034 break; 6035 case WifiManager.WPS_COMPLETED: 6036 s = "WPS_COMPLETED"; 6037 break; 6038 case WifiManager.RSSI_PKTCNT_FETCH: 6039 s = "RSSI_PKTCNT_FETCH"; 6040 break; 6041 case CMD_IP_CONFIGURATION_LOST: 6042 s = "CMD_IP_CONFIGURATION_LOST"; 6043 break; 6044 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6045 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6046 break; 6047 case CMD_STATIC_IP_SUCCESS: 6048 s = "CMD_STATIC_IP_SUCCESSFUL"; 6049 break; 6050 case CMD_STATIC_IP_FAILURE: 6051 s = "CMD_STATIC_IP_FAILURE"; 6052 break; 6053 case DhcpStateMachine.DHCP_SUCCESS: 6054 s = "DHCP_SUCCESS"; 6055 break; 6056 case DhcpStateMachine.DHCP_FAILURE: 6057 s = "DHCP_FAILURE"; 6058 break; 6059 case CMD_TARGET_BSSID: 6060 s = "CMD_TARGET_BSSID"; 6061 break; 6062 case CMD_ASSOCIATED_BSSID: 6063 s = "CMD_ASSOCIATED_BSSID"; 6064 break; 6065 case CMD_ROAM_WATCHDOG_TIMER: 6066 s = "CMD_ROAM_WATCHDOG_TIMER"; 6067 break; 6068 case CMD_SCREEN_STATE_CHANGED: 6069 s = "CMD_SCREEN_STATE_CHANGED"; 6070 break; 6071 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6072 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6073 break; 6074 default: 6075 s = "what:" + Integer.toString(what); 6076 break; 6077 } 6078 return s; 6079 } 6080 6081 void registerConnected() { 6082 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6083 long now_ms = System.currentTimeMillis(); 6084 // We are switching away from this configuration, 6085 // hence record the time we were connected last 6086 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6087 if (config != null) { 6088 config.lastConnected = System.currentTimeMillis(); 6089 config.autoJoinBailedDueToLowRssi = false; 6090 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 6091 config.numConnectionFailures = 0; 6092 config.numIpConfigFailures = 0; 6093 config.numAuthFailures = 0; 6094 config.numAssociation++; 6095 } 6096 mBadLinkspeedcount = 0; 6097 } 6098 } 6099 6100 void registerDisconnected() { 6101 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6102 long now_ms = System.currentTimeMillis(); 6103 // We are switching away from this configuration, 6104 // hence record the time we were connected last 6105 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6106 if (config != null) { 6107 config.lastDisconnected = System.currentTimeMillis(); 6108 } 6109 } 6110 } 6111 6112 void noteWifiDisabledWhileAssociated() { 6113 // We got disabled by user while we were associated, make note of it 6114 int rssi = mWifiInfo.getRssi(); 6115 WifiConfiguration config = getCurrentWifiConfiguration(); 6116 if (getCurrentState() == mConnectedState 6117 && rssi != WifiInfo.INVALID_RSSI 6118 && config != null) { 6119 boolean is24GHz = mWifiInfo.is24GHz(); 6120 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24) 6121 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5); 6122 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24) 6123 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5); 6124 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24) 6125 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5); 6126 if (isBadRSSI) { 6127 // Take note that we got disabled while RSSI was Bad 6128 config.numUserTriggeredWifiDisableLowRSSI++; 6129 } else if (isLowRSSI) { 6130 // Take note that we got disabled while RSSI was Low 6131 config.numUserTriggeredWifiDisableBadRSSI++; 6132 } else if (!isHighRSSI) { 6133 // Take note that we got disabled while RSSI was Not high 6134 config.numUserTriggeredWifiDisableNotHighRSSI++; 6135 } 6136 } 6137 } 6138 6139 WifiConfiguration getCurrentWifiConfiguration() { 6140 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6141 return null; 6142 } 6143 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6144 } 6145 6146 ScanResult getCurrentScanResult() { 6147 WifiConfiguration config = getCurrentWifiConfiguration(); 6148 if (config == null) { 6149 return null; 6150 } 6151 String BSSID = mWifiInfo.getBSSID(); 6152 if (BSSID == null) { 6153 BSSID = mTargetRoamBSSID; 6154 } 6155 if (config.scanResultCache == null) { 6156 return null; 6157 } 6158 return config.scanResultCache.get(BSSID); 6159 } 6160 6161 String getCurrentBSSID() { 6162 if (linkDebouncing) { 6163 return null; 6164 } 6165 return mLastBssid; 6166 } 6167 6168 class ConnectModeState extends State { 6169 @Override 6170 public boolean processMessage(Message message) { 6171 WifiConfiguration config; 6172 int netId; 6173 boolean ok; 6174 boolean didDisconnect; 6175 String bssid; 6176 String ssid; 6177 NetworkUpdateResult result; 6178 logStateAndMessage(message, getClass().getSimpleName()); 6179 6180 switch (message.what) { 6181 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6182 didBlackListBSSID = false; 6183 bssid = (String) message.obj; 6184 if (bssid == null || TextUtils.isEmpty(bssid)) { 6185 // If BSSID is null, use the target roam BSSID 6186 bssid = mTargetRoamBSSID; 6187 } 6188 if (bssid != null) { 6189 // If we have a BSSID, tell configStore to black list it 6190 synchronized(mScanResultCache) { 6191 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 6192 (mLastNetworkId, bssid, false); 6193 } 6194 } 6195 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6196 break; 6197 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6198 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6199 break; 6200 case WifiMonitor.SSID_TEMP_DISABLED: 6201 case WifiMonitor.SSID_REENABLED: 6202 String substr = (String) message.obj; 6203 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 6204 "temp-disabled" : "re-enabled"; 6205 loge("ConnectModeState SSID state=" + en + " nid=" 6206 + Integer.toString(message.arg1) + " [" + substr + "]"); 6207 synchronized(mScanResultCache) { 6208 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 6209 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 6210 } 6211 break; 6212 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6213 SupplicantState state = handleSupplicantStateChange(message); 6214 // A driver/firmware hang can now put the interface in a down state. 6215 // We detect the interface going down and recover from it 6216 if (!SupplicantState.isDriverActive(state)) { 6217 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6218 handleNetworkDisconnect(); 6219 } 6220 log("Detected an interface down, restart driver"); 6221 transitionTo(mDriverStoppedState); 6222 sendMessage(CMD_START_DRIVER); 6223 break; 6224 } 6225 6226 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 6227 // when authentication times out after a successful connection, 6228 // we can figure this from the supplicant state. If supplicant 6229 // state is DISCONNECTED, but the mNetworkInfo says we are not 6230 // disconnected, we need to handle a disconnection 6231 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 6232 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6233 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 6234 handleNetworkDisconnect(); 6235 transitionTo(mDisconnectedState); 6236 } 6237 break; 6238 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6239 if (message.arg1 == 1) { 6240 mWifiNative.disconnect(); 6241 mTemporarilyDisconnectWifi = true; 6242 } else { 6243 mWifiNative.reconnect(); 6244 mTemporarilyDisconnectWifi = false; 6245 } 6246 break; 6247 case CMD_ADD_OR_UPDATE_NETWORK: 6248 config = (WifiConfiguration) message.obj; 6249 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 6250 if (res < 0) { 6251 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6252 } else { 6253 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 6254 if (curConfig != null && config != null) { 6255 if (curConfig.priority < config.priority 6256 && config.status == WifiConfiguration.Status.ENABLED) { 6257 // Interpret this as a connect attempt 6258 // Set the last selected configuration so as to allow the system to 6259 // stick the last user choice without persisting the choice 6260 mWifiConfigStore.setLastSelectedConfiguration(res); 6261 6262 // Remember time of last connection attempt 6263 lastConnectAttempt = System.currentTimeMillis(); 6264 6265 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6266 6267 // As a courtesy to the caller, trigger a scan now 6268 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 6269 } 6270 } 6271 } 6272 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 6273 break; 6274 case CMD_REMOVE_NETWORK: 6275 ok = mWifiConfigStore.removeNetwork(message.arg1); 6276 if (!ok) { 6277 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6278 } 6279 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6280 break; 6281 case CMD_ENABLE_NETWORK: 6282 boolean others = message.arg2 == 1; 6283 // Tell autojoin the user did try to select to that network 6284 // However, do NOT persist the choice by bumping the priority of the network 6285 if (others) { 6286 mWifiAutoJoinController. 6287 updateConfigurationHistory(message.arg1, true, false); 6288 // Set the last selected configuration so as to allow the system to 6289 // stick the last user choice without persisting the choice 6290 mWifiConfigStore.setLastSelectedConfiguration(message.arg1); 6291 6292 // Remember time of last connection attempt 6293 lastConnectAttempt = System.currentTimeMillis(); 6294 6295 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6296 } 6297 // Cancel auto roam requests 6298 autoRoamSetBSSID(message.arg1, "any"); 6299 6300 ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1); 6301 if (!ok) { 6302 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6303 } 6304 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6305 break; 6306 case CMD_ENABLE_ALL_NETWORKS: 6307 long time = android.os.SystemClock.elapsedRealtime(); 6308 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 6309 mWifiConfigStore.enableAllNetworks(); 6310 mLastEnableAllNetworksTime = time; 6311 } 6312 break; 6313 case WifiManager.DISABLE_NETWORK: 6314 if (mWifiConfigStore.disableNetwork(message.arg1, 6315 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 6316 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 6317 } else { 6318 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6319 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 6320 WifiManager.ERROR); 6321 } 6322 break; 6323 case CMD_BLACKLIST_NETWORK: 6324 mWifiNative.addToBlacklist((String) message.obj); 6325 break; 6326 case CMD_CLEAR_BLACKLIST: 6327 mWifiNative.clearBlacklist(); 6328 break; 6329 case CMD_SAVE_CONFIG: 6330 ok = mWifiConfigStore.saveConfig(); 6331 6332 if (DBG) loge("wifistatemachine did save config " + ok); 6333 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 6334 6335 // Inform the backup manager about a data change 6336 IBackupManager ibm = IBackupManager.Stub.asInterface( 6337 ServiceManager.getService(Context.BACKUP_SERVICE)); 6338 if (ibm != null) { 6339 try { 6340 ibm.dataChanged("com.android.providers.settings"); 6341 } catch (Exception e) { 6342 // Try again later 6343 } 6344 } 6345 break; 6346 case CMD_GET_CONFIGURED_NETWORKS: 6347 replyToMessage(message, message.what, 6348 mWifiConfigStore.getConfiguredNetworks()); 6349 break; 6350 case WifiMonitor.SUP_REQUEST_IDENTITY: 6351 // Supplicant lacks credentials to connect to that network, hence black list 6352 ssid = (String) message.obj; 6353 6354 if (targetWificonfiguration != null && ssid != null 6355 && targetWificonfiguration.SSID != null 6356 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 6357 mWifiConfigStore.handleSSIDStateChange(targetWificonfiguration.networkId, 6358 false, "AUTH_FAILED no identity", null); 6359 } 6360 // Disconnect now, as we don't have any way to fullfill the supplicant request. 6361 mWifiConfigStore.setLastSelectedConfiguration 6362 (WifiConfiguration.INVALID_NETWORK_ID); 6363 mWifiNative.disconnect(); 6364 break; 6365 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 6366 logd("Received SUP_REQUEST_SIM_AUTH"); 6367 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 6368 if (requestData != null) { 6369 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 6370 handleGsmAuthRequest(requestData); 6371 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA) { 6372 handle3GAuthRequest(requestData); 6373 } 6374 } else { 6375 loge("Invalid sim auth request"); 6376 } 6377 break; 6378 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6379 replyToMessage(message, message.what, 6380 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 6381 break; 6382 /* Do a redundant disconnect without transition */ 6383 case CMD_DISCONNECT: 6384 mWifiConfigStore.setLastSelectedConfiguration 6385 (WifiConfiguration.INVALID_NETWORK_ID); 6386 mWifiNative.disconnect(); 6387 break; 6388 case CMD_RECONNECT: 6389 mWifiAutoJoinController.attemptAutoJoin(); 6390 break; 6391 case CMD_REASSOCIATE: 6392 lastConnectAttempt = System.currentTimeMillis(); 6393 mWifiNative.reassociate(); 6394 break; 6395 case CMD_RELOAD_TLS_AND_RECONNECT: 6396 if (mWifiConfigStore.needsUnlockedKeyStore()) { 6397 logd("Reconnecting to give a chance to un-connected TLS networks"); 6398 mWifiNative.disconnect(); 6399 lastConnectAttempt = System.currentTimeMillis(); 6400 mWifiNative.reconnect(); 6401 } 6402 break; 6403 case CMD_AUTO_ROAM: 6404 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 6405 return HANDLED; 6406 case CMD_AUTO_CONNECT: 6407 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 6408 * associated status to the STATUS command but somehow-someplace still thinks 6409 * it is associated and thus will ignore select/reconnect command with 6410 * following message: 6411 * "Already associated with the selected network - do nothing" 6412 * 6413 * Hence, sends a disconnect to supplicant first. 6414 */ 6415 didDisconnect = false; 6416 if (getCurrentState() != mDisconnectedState) { 6417 /** Supplicant will ignore the reconnect if we are currently associated, 6418 * hence trigger a disconnect 6419 */ 6420 didDisconnect = true; 6421 mWifiNative.disconnect(); 6422 } 6423 6424 /* connect command coming from auto-join */ 6425 config = (WifiConfiguration) message.obj; 6426 netId = message.arg1; 6427 int roam = message.arg2; 6428 loge("CMD_AUTO_CONNECT sup state " 6429 + mSupplicantStateTracker.getSupplicantStateName() 6430 + " my state " + getCurrentState().getName() 6431 + " nid=" + Integer.toString(netId) 6432 + " roam=" + Integer.toString(roam)); 6433 if (config == null) { 6434 loge("AUTO_CONNECT and no config, bail out..."); 6435 break; 6436 } 6437 6438 /* Make sure we cancel any previous roam request */ 6439 autoRoamSetBSSID(netId, config.BSSID); 6440 6441 /* Save the network config */ 6442 loge("CMD_AUTO_CONNECT will save config -> " + config.SSID 6443 + " nid=" + Integer.toString(netId)); 6444 result = mWifiConfigStore.saveNetwork(config, -1); 6445 netId = result.getNetworkId(); 6446 loge("CMD_AUTO_CONNECT did save config -> " 6447 + " nid=" + Integer.toString(netId)); 6448 6449 // Make sure the network is enabled, since supplicant will not reenable it 6450 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6451 6452 if (mWifiConfigStore.selectNetwork(netId) && 6453 mWifiNative.reconnect()) { 6454 lastConnectAttempt = System.currentTimeMillis(); 6455 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6456 config = mWifiConfigStore.getWifiConfiguration(netId); 6457 if (config != null 6458 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 6459 // If we autojoined a different config than the user selected one, 6460 // it means we could not see the last user selection, 6461 // or that the last user selection was faulty and ended up blacklisted 6462 // for some reason (in which case the user is notified with an error 6463 // message in the Wifi picker), and thus we managed to auto-join away 6464 // from the selected config. -> in that case we need to forget 6465 // the selection because we don't want to abruptly switch back to it. 6466 // 6467 // Note that the user selection is also forgotten after a period of time 6468 // during which the device has been disconnected. 6469 // The default value is 30 minutes : see the code path at bottom of 6470 // setScanResults() function. 6471 mWifiConfigStore. 6472 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6473 } 6474 mAutoRoaming = roam; 6475 if (isRoaming() || linkDebouncing) { 6476 transitionTo(mRoamingState); 6477 } else if (didDisconnect) { 6478 transitionTo(mDisconnectingState); 6479 } else { 6480 /* Already in disconnected state, nothing to change */ 6481 } 6482 } else { 6483 loge("Failed to connect config: " + config + " netId: " + netId); 6484 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6485 WifiManager.ERROR); 6486 break; 6487 } 6488 break; 6489 case WifiManager.CONNECT_NETWORK: 6490 /** 6491 * The connect message can contain a network id passed as arg1 on message or 6492 * or a config passed as obj on message. 6493 * For a new network, a config is passed to create and connect. 6494 * For an existing network, a network id is passed 6495 */ 6496 netId = message.arg1; 6497 config = (WifiConfiguration) message.obj; 6498 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6499 boolean updatedExisting = false; 6500 6501 /* Save the network config */ 6502 if (config != null) { 6503 String configKey = config.configKey(true /* allowCached */); 6504 WifiConfiguration savedConfig = 6505 mWifiConfigStore.getWifiConfiguration(configKey); 6506 if (savedConfig != null) { 6507 // There is an existing config with this netId, but it wasn't exposed 6508 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 6509 // getConfiguredNetworks). Remove those bits and update the config. 6510 config = savedConfig; 6511 loge("CONNECT_NETWORK updating existing config with id=" + 6512 config.networkId + " configKey=" + configKey); 6513 config.ephemeral = false; 6514 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 6515 updatedExisting = true; 6516 } 6517 6518 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 6519 netId = result.getNetworkId(); 6520 } 6521 config = mWifiConfigStore.getWifiConfiguration(netId); 6522 6523 if (config == null) { 6524 loge("CONNECT_NETWORK id=" + Integer.toString(netId) + " " 6525 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 6526 + getCurrentState().getName()); 6527 } else { 6528 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 6529 loge("CONNECT_NETWORK id=" + Integer.toString(netId) 6530 + " config=" + config.SSID 6531 + " cnid=" + config.networkId 6532 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 6533 + " my state " + getCurrentState().getName() 6534 + " uid = " + message.sendingUid 6535 + wasSkipped); 6536 } 6537 6538 autoRoamSetBSSID(netId, "any"); 6539 6540 if (message.sendingUid == Process.WIFI_UID 6541 || message.sendingUid == Process.SYSTEM_UID) { 6542 // As a sanity measure, clear the BSSID in the supplicant network block. 6543 // If system or Wifi Settings want to connect, they will not 6544 // specify the BSSID. 6545 // If an app however had added a BSSID to this configuration, and the BSSID 6546 // was wrong, Then we would forever fail to connect until that BSSID 6547 // is cleaned up. 6548 clearConfigBSSID(config, "CONNECT_NETWORK"); 6549 } 6550 6551 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 6552 6553 /* Tell autojoin the user did try to connect to that network */ 6554 mWifiAutoJoinController.updateConfigurationHistory(netId, true, true); 6555 6556 mWifiConfigStore.setLastSelectedConfiguration(netId); 6557 6558 didDisconnect = false; 6559 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 6560 && mLastNetworkId != netId) { 6561 /** Supplicant will ignore the reconnect if we are currently associated, 6562 * hence trigger a disconnect 6563 */ 6564 didDisconnect = true; 6565 mWifiNative.disconnect(); 6566 } 6567 6568 // Make sure the network is enabled, since supplicant will not reenable it 6569 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6570 6571 if (mWifiConfigStore.selectNetwork(netId) && 6572 mWifiNative.reconnect()) { 6573 lastConnectAttempt = System.currentTimeMillis(); 6574 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6575 6576 /* The state tracker handles enabling networks upon completion/failure */ 6577 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 6578 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 6579 if (didDisconnect) { 6580 /* Expect a disconnection from the old connection */ 6581 transitionTo(mDisconnectingState); 6582 } else if (updatedExisting && getCurrentState() == mConnectedState && 6583 getCurrentWifiConfiguration().networkId == netId) { 6584 // Update the current set of network capabilities, but stay in the 6585 // current state. 6586 updateCapabilities(config); 6587 } else { 6588 /** 6589 * Directly go to disconnected state where we 6590 * process the connection events from supplicant 6591 **/ 6592 transitionTo(mDisconnectedState); 6593 } 6594 } else { 6595 loge("Failed to connect config: " + config + " netId: " + netId); 6596 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6597 WifiManager.ERROR); 6598 break; 6599 } 6600 break; 6601 case WifiManager.SAVE_NETWORK: 6602 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6603 // Fall thru 6604 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 6605 lastSavedConfigurationAttempt = null; // Used for debug 6606 config = (WifiConfiguration) message.obj; 6607 if (config == null) { 6608 loge("ERROR: SAVE_NETWORK with null configuration" 6609 + mSupplicantStateTracker.getSupplicantStateName() 6610 + " my state " + getCurrentState().getName()); 6611 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6612 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 6613 WifiManager.ERROR); 6614 break; 6615 } 6616 lastSavedConfigurationAttempt = new WifiConfiguration(config); 6617 int nid = config.networkId; 6618 loge("SAVE_NETWORK id=" + Integer.toString(nid) 6619 + " config=" + config.SSID 6620 + " nid=" + config.networkId 6621 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 6622 + " my state " + getCurrentState().getName()); 6623 6624 result = mWifiConfigStore.saveNetwork(config, -1); 6625 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 6626 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 6627 if (result.hasIpChanged()) { 6628 // The currently connection configuration was changed 6629 // We switched from DHCP to static or from static to DHCP, or the 6630 // static IP address has changed. 6631 log("Reconfiguring IP on connection"); 6632 // TODO: clear addresses and disable IPv6 6633 // to simplify obtainingIpState. 6634 transitionTo(mObtainingIpState); 6635 } 6636 if (result.hasProxyChanged()) { 6637 log("Reconfiguring proxy on connection"); 6638 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 6639 } 6640 } 6641 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 6642 if (VDBG) { 6643 loge("Success save network nid=" 6644 + Integer.toString(result.getNetworkId())); 6645 } 6646 6647 synchronized(mScanResultCache) { 6648 /** 6649 * If the command comes from WifiManager, then 6650 * tell autojoin the user did try to modify and save that network, 6651 * and interpret the SAVE_NETWORK as a request to connect 6652 */ 6653 boolean user = message.what == WifiManager.SAVE_NETWORK; 6654 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 6655 , user, true); 6656 mWifiAutoJoinController.attemptAutoJoin(); 6657 } 6658 } else { 6659 loge("Failed to save network"); 6660 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6661 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 6662 WifiManager.ERROR); 6663 } 6664 break; 6665 case WifiManager.FORGET_NETWORK: 6666 // Debug only, remember last configuration that was forgotten 6667 WifiConfiguration toRemove 6668 = mWifiConfigStore.getWifiConfiguration(message.arg1); 6669 if (toRemove == null) { 6670 lastForgetConfigurationAttempt = null; 6671 } else { 6672 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 6673 } 6674 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 6675 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 6676 } else { 6677 loge("Failed to forget network"); 6678 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 6679 WifiManager.ERROR); 6680 } 6681 break; 6682 case WifiManager.START_WPS: 6683 WpsInfo wpsInfo = (WpsInfo) message.obj; 6684 WpsResult wpsResult; 6685 switch (wpsInfo.setup) { 6686 case WpsInfo.PBC: 6687 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 6688 break; 6689 case WpsInfo.KEYPAD: 6690 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 6691 break; 6692 case WpsInfo.DISPLAY: 6693 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 6694 break; 6695 default: 6696 wpsResult = new WpsResult(Status.FAILURE); 6697 loge("Invalid setup for WPS"); 6698 break; 6699 } 6700 mWifiConfigStore.setLastSelectedConfiguration 6701 (WifiConfiguration.INVALID_NETWORK_ID); 6702 if (wpsResult.status == Status.SUCCESS) { 6703 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 6704 transitionTo(mWpsRunningState); 6705 } else { 6706 loge("Failed to start WPS with config " + wpsInfo.toString()); 6707 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 6708 } 6709 break; 6710 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6711 if (DBG) log("Network connection established"); 6712 mLastNetworkId = message.arg1; 6713 mLastBssid = (String) message.obj; 6714 6715 mWifiInfo.setBSSID(mLastBssid); 6716 mWifiInfo.setNetworkId(mLastNetworkId); 6717 6718 sendNetworkStateChangeBroadcast(mLastBssid); 6719 transitionTo(mObtainingIpState); 6720 break; 6721 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6722 // Calling handleNetworkDisconnect here is redundant because we might already 6723 // have called it when leaving L2ConnectedState to go to disconnecting state 6724 // or thru other path 6725 // We should normally check the mWifiInfo or mLastNetworkId so as to check 6726 // if they are valid, and only in this case call handleNEtworkDisconnect, 6727 // TODO: this should be fixed for a L MR release 6728 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 6729 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 6730 // at the chip etc... 6731 if (DBG) log("ConnectModeState: Network connection lost "); 6732 handleNetworkDisconnect(); 6733 transitionTo(mDisconnectedState); 6734 break; 6735 default: 6736 return NOT_HANDLED; 6737 } 6738 return HANDLED; 6739 } 6740 } 6741 6742 private void updateCapabilities(WifiConfiguration config) { 6743 if (config.ephemeral) { 6744 mNetworkCapabilities.removeCapability( 6745 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 6746 } else { 6747 mNetworkCapabilities.addCapability( 6748 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 6749 } 6750 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 6751 } 6752 6753 private class WifiNetworkAgent extends NetworkAgent { 6754 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 6755 NetworkCapabilities nc, LinkProperties lp, int score) { 6756 super(l, c, TAG, ni, nc, lp, score); 6757 } 6758 protected void unwanted() { 6759 // Ignore if we're not the current networkAgent. 6760 if (this != mNetworkAgent) return; 6761 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 6762 + Integer.toString(mWifiInfo.score)); 6763 unwantedNetwork(network_status_unwanted_disconnect); 6764 } 6765 6766 protected void networkStatus(int status) { 6767 if (status == NetworkAgent.INVALID_NETWORK) { 6768 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 6769 + Integer.toString(mWifiInfo.score)); 6770 unwantedNetwork(network_status_unwanted_disable_autojoin); 6771 } else if (status == NetworkAgent.VALID_NETWORK) { 6772 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 6773 + Integer.toString(mWifiInfo.score)); 6774 doNetworkStatus(status); 6775 } 6776 } 6777 } 6778 6779 void unwantedNetwork(int reason) { 6780 sendMessage(CMD_UNWANTED_NETWORK, reason); 6781 } 6782 6783 void doNetworkStatus(int status) { 6784 sendMessage(CMD_NETWORK_STATUS, status); 6785 } 6786 6787 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 6788 if (config == null) 6789 return false; 6790 6791 // We are still seeing a fairly high power consumption triggered by autojoin scans 6792 // Hence do partial scans only for PSK configuration that are roamable since the 6793 // primary purpose of the partial scans is roaming. 6794 // Full badn scans with exponential backoff for the purpose or extended roaming and 6795 // network switching are performed unconditionally. 6796 if (config.scanResultCache == null 6797 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 6798 || config.scanResultCache.size() > 6) { 6799 //return true but to not trigger the scan 6800 return true; 6801 } 6802 HashSet<Integer> channels 6803 = mWifiConfigStore.makeChannelList(config, 6804 ONE_HOUR_MILLI, restrictChannelList); 6805 if (channels != null && channels.size() != 0) { 6806 StringBuilder freqs = new StringBuilder(); 6807 boolean first = true; 6808 for (Integer channel : channels) { 6809 if (!first) 6810 freqs.append(","); 6811 freqs.append(channel.toString()); 6812 first = false; 6813 } 6814 //if (DBG) { 6815 loge("WifiStateMachine starting scan for " + config.configKey() + " with " + freqs); 6816 //} 6817 // Call wifi native to start the scan 6818 if (startScanNative( 6819 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 6820 freqs.toString())) { 6821 // Only count battery consumption if scan request is accepted 6822 noteScanStart(SCAN_ALARM_SOURCE, null); 6823 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 6824 } else { 6825 // used for debug only, mark scan as failed 6826 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 6827 } 6828 return true; 6829 } else { 6830 if (DBG) loge("WifiStateMachine no channels for " + config.configKey()); 6831 return false; 6832 } 6833 } 6834 6835 void clearCurrentConfigBSSID(String dbg) { 6836 // Clear the bssid in the current config's network block 6837 WifiConfiguration config = getCurrentWifiConfiguration(); 6838 if (config == null) 6839 return; 6840 clearConfigBSSID(config, dbg); 6841 } 6842 void clearConfigBSSID(WifiConfiguration config, String dbg) { 6843 if (config == null) 6844 return; 6845 if (DBG) { 6846 loge(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 6847 + " config.bssid " + config.BSSID); 6848 } 6849 config.autoJoinBSSID = "any"; 6850 config.BSSID = "any"; 6851 if (DBG) { 6852 loge(dbg + " " + config.SSID 6853 + " nid=" + Integer.toString(config.networkId)); 6854 } 6855 mWifiConfigStore.saveWifiConfigBSSID(config); 6856 } 6857 6858 class L2ConnectedState extends State { 6859 @Override 6860 public void enter() { 6861 mRssiPollToken++; 6862 if (mEnableRssiPolling) { 6863 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 6864 } 6865 if (mNetworkAgent != null) { 6866 loge("Have NetworkAgent when entering L2Connected"); 6867 setNetworkDetailedState(DetailedState.DISCONNECTED); 6868 } 6869 setNetworkDetailedState(DetailedState.CONNECTING); 6870 6871 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 6872 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 6873 } 6874 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 6875 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 6876 mLinkProperties, 60); 6877 6878 // We must clear the config BSSID, as the wifi chipset may decide to roam 6879 // from this point on and having the BSSID specified in the network block would 6880 // cause the roam to faile and the device to disconnect 6881 clearCurrentConfigBSSID("L2ConnectedState"); 6882 } 6883 6884 @Override 6885 public void exit() { 6886 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 6887 // Bug: 15347363 6888 // For paranoia's sake, call handleNetworkDisconnect 6889 // only if BSSID is null or last networkId 6890 // is not invalid. 6891 if (DBG) { 6892 StringBuilder sb = new StringBuilder(); 6893 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 6894 if (mLastBssid !=null) { 6895 sb.append(" ").append(mLastBssid); 6896 } 6897 } 6898 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6899 handleNetworkDisconnect(); 6900 } 6901 } 6902 6903 @Override 6904 public boolean processMessage(Message message) { 6905 logStateAndMessage(message, getClass().getSimpleName()); 6906 6907 switch (message.what) { 6908 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6909 handlePreDhcpSetup(); 6910 break; 6911 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6912 handlePostDhcpSetup(); 6913 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 6914 if (DBG) log("WifiStateMachine DHCP successful"); 6915 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 6916 // We advance to mVerifyingLinkState because handleIPv4Success will call 6917 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 6918 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 6919 if (DBG) { 6920 int count = -1; 6921 WifiConfiguration config = getCurrentWifiConfiguration(); 6922 if (config != null) { 6923 count = config.numConnectionFailures; 6924 } 6925 log("WifiStateMachine DHCP failure count=" + count); 6926 } 6927 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 6928 // As above, we transition to mDisconnectingState via updateLinkProperties. 6929 } 6930 break; 6931 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6932 handleSuccessfulIpConfiguration(); 6933 sendConnectedState(); 6934 transitionTo(mConnectedState); 6935 break; 6936 case CMD_IP_CONFIGURATION_LOST: 6937 // Get Link layer stats so as we get fresh tx packet counters 6938 getWifiLinkLayerStats(true); 6939 handleIpConfigurationLost(); 6940 transitionTo(mDisconnectingState); 6941 break; 6942 case CMD_DISCONNECT: 6943 mWifiNative.disconnect(); 6944 transitionTo(mDisconnectingState); 6945 break; 6946 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6947 if (message.arg1 == 1) { 6948 mWifiNative.disconnect(); 6949 mTemporarilyDisconnectWifi = true; 6950 transitionTo(mDisconnectingState); 6951 } 6952 break; 6953 case CMD_SET_OPERATIONAL_MODE: 6954 if (message.arg1 != CONNECT_MODE) { 6955 sendMessage(CMD_DISCONNECT); 6956 deferMessage(message); 6957 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6958 noteWifiDisabledWhileAssociated(); 6959 } 6960 mWifiConfigStore. 6961 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6962 } 6963 break; 6964 case CMD_SET_COUNTRY_CODE: 6965 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6966 deferMessage(message); 6967 break; 6968 case CMD_START_SCAN: 6969 //if (DBG) { 6970 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 6971 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 6972 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 6973 + " targetRoamBSSID=" + mTargetRoamBSSID 6974 + " RSSI=" + mWifiInfo.getRssi()); 6975 //} 6976 if (message.arg1 == SCAN_ALARM_SOURCE) { 6977 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 6978 // not be processed) and restart the scan if needed 6979 boolean shouldScan = 6980 mScreenOn && mWifiConfigStore.enableAutoJoinScanWhenAssociated; 6981 if (!checkAndRestartDelayedScan(message.arg2, 6982 shouldScan, 6983 mWifiConfigStore.associatedPartialScanPeriodMilli, null, null)) { 6984 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 6985 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 6986 + message.arg1 6987 + " " + message.arg2 + ", " + mDelayedScanCounter 6988 + " -> obsolete"); 6989 return HANDLED; 6990 } 6991 boolean tryFullBandScan = false; 6992 boolean restrictChannelList = false; 6993 long now_ms = System.currentTimeMillis(); 6994 if (DBG) { 6995 loge("WifiStateMachine CMD_START_SCAN with age=" 6996 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 6997 + " interval=" + fullBandConnectedTimeIntervalMilli 6998 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 6999 } 7000 if (mWifiInfo != null) { 7001 if (mWifiConfigStore.enableFullBandScanWhenAssociated && 7002 (now_ms - lastFullBandConnectedTimeMilli) 7003 > fullBandConnectedTimeIntervalMilli) { 7004 if (DBG) { 7005 loge("WifiStateMachine CMD_START_SCAN try full band scan age=" 7006 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7007 + " interval=" + fullBandConnectedTimeIntervalMilli 7008 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7009 } 7010 tryFullBandScan = true; 7011 } 7012 7013 if (mWifiInfo.txSuccessRate > 7014 mWifiConfigStore.maxTxPacketForFullScans 7015 || mWifiInfo.rxSuccessRate > 7016 mWifiConfigStore.maxRxPacketForFullScans) { 7017 // Too much traffic at the interface, hence no full band scan 7018 if (DBG) { 7019 loge("WifiStateMachine CMD_START_SCAN " + 7020 "prevent full band scan due to pkt rate"); 7021 } 7022 tryFullBandScan = false; 7023 } 7024 7025 if (mWifiInfo.txSuccessRate > 7026 mWifiConfigStore.maxTxPacketForPartialScans 7027 || mWifiInfo.rxSuccessRate > 7028 mWifiConfigStore.maxRxPacketForPartialScans) { 7029 // Don't scan if lots of packets are being sent 7030 restrictChannelList = true; 7031 if (mWifiConfigStore.alwaysEnableScansWhileAssociated == 0) { 7032 if (DBG) { 7033 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7034 + " ...and ignore scans" 7035 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 7036 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 7037 } 7038 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 7039 return HANDLED; 7040 } 7041 } 7042 } 7043 7044 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 7045 if (DBG) { 7046 loge("WifiStateMachine CMD_START_SCAN full=" + 7047 tryFullBandScan); 7048 } 7049 if (currentConfiguration != null) { 7050 if (fullBandConnectedTimeIntervalMilli 7051 < mWifiConfigStore.associatedPartialScanPeriodMilli) { 7052 // Sanity 7053 fullBandConnectedTimeIntervalMilli 7054 = mWifiConfigStore.associatedPartialScanPeriodMilli; 7055 } 7056 if (tryFullBandScan) { 7057 lastFullBandConnectedTimeMilli = now_ms; 7058 if (fullBandConnectedTimeIntervalMilli 7059 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7060 // Increase the interval 7061 fullBandConnectedTimeIntervalMilli 7062 = fullBandConnectedTimeIntervalMilli 7063 * mWifiConfigStore.associatedFullScanBackoff / 8; 7064 7065 if (DBG) { 7066 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7067 + fullBandConnectedTimeIntervalMilli); 7068 } 7069 } 7070 handleScanRequest( 7071 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7072 } else { 7073 if (!startScanForConfiguration( 7074 currentConfiguration, restrictChannelList)) { 7075 if (DBG) { 7076 loge("WifiStateMachine starting scan, " + 7077 " did not find channels -> full"); 7078 } 7079 lastFullBandConnectedTimeMilli = now_ms; 7080 if (fullBandConnectedTimeIntervalMilli 7081 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7082 // Increase the interval 7083 fullBandConnectedTimeIntervalMilli 7084 = fullBandConnectedTimeIntervalMilli 7085 * mWifiConfigStore.associatedFullScanBackoff / 8; 7086 7087 if (DBG) { 7088 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7089 + fullBandConnectedTimeIntervalMilli); 7090 } 7091 } 7092 handleScanRequest( 7093 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7094 } 7095 } 7096 7097 } else { 7098 loge("CMD_START_SCAN : connected mode and no configuration"); 7099 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7100 } 7101 } else { 7102 // Not scan alarm source 7103 return NOT_HANDLED; 7104 } 7105 break; 7106 /* Ignore connection to same network */ 7107 case WifiManager.CONNECT_NETWORK: 7108 int netId = message.arg1; 7109 if (mWifiInfo.getNetworkId() == netId) { 7110 break; 7111 } 7112 return NOT_HANDLED; 7113 /* Ignore */ 7114 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7115 break; 7116 case CMD_RSSI_POLL: 7117 if (message.arg1 == mRssiPollToken) { 7118 if (mWifiConfigStore.enableChipWakeUpWhenAssociated) { 7119 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 7120 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 7121 if (stats != null) { 7122 // Sanity check the results provided by driver 7123 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 7124 && (stats.rssi_mgmt == 0 7125 || stats.beacon_rx == 0)) { 7126 stats = null; 7127 } 7128 } 7129 // Get Info and continue polling 7130 fetchRssiLinkSpeedAndFrequencyNative(); 7131 calculateWifiScore(stats); 7132 } 7133 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7134 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7135 7136 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 7137 } else { 7138 // Polling has completed 7139 } 7140 break; 7141 case CMD_ENABLE_RSSI_POLL: 7142 if (mWifiConfigStore.enableRssiPollWhenAssociated) { 7143 mEnableRssiPolling = (message.arg1 == 1); 7144 } else { 7145 mEnableRssiPolling = false; 7146 } 7147 mRssiPollToken++; 7148 if (mEnableRssiPolling) { 7149 // First poll 7150 fetchRssiLinkSpeedAndFrequencyNative(); 7151 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7152 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7153 } else { 7154 cleanWifiScore(); 7155 } 7156 break; 7157 case WifiManager.RSSI_PKTCNT_FETCH: 7158 RssiPacketCountInfo info = new RssiPacketCountInfo(); 7159 fetchRssiLinkSpeedAndFrequencyNative(); 7160 info.rssi = mWifiInfo.getRssi(); 7161 fetchPktcntNative(info); 7162 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 7163 break; 7164 case CMD_DELAYED_NETWORK_DISCONNECT: 7165 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 7166 7167 // Ignore if we are not debouncing 7168 loge("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 7169 + message.arg1); 7170 return HANDLED; 7171 } else { 7172 loge("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 7173 + message.arg1); 7174 7175 linkDebouncing = false; 7176 // If we are still debouncing while this message comes, 7177 // it means we were not able to reconnect within the alloted time 7178 // = LINK_FLAPPING_DEBOUNCE_MSEC 7179 // and thus, trigger a real disconnect 7180 handleNetworkDisconnect(); 7181 transitionTo(mDisconnectedState); 7182 } 7183 break; 7184 case CMD_ASSOCIATED_BSSID: 7185 if ((String) message.obj == null) { 7186 loge("Associated command w/o BSSID"); 7187 break; 7188 } 7189 mLastBssid = (String) message.obj; 7190 mWifiInfo.setBSSID((String) message.obj); 7191 break; 7192 default: 7193 return NOT_HANDLED; 7194 } 7195 7196 return HANDLED; 7197 } 7198 } 7199 7200 class ObtainingIpState extends State { 7201 @Override 7202 public void enter() { 7203 if (DBG) { 7204 String key = ""; 7205 if (getCurrentWifiConfiguration() != null) { 7206 key = getCurrentWifiConfiguration().configKey(); 7207 } 7208 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 7209 + " " + key + " " 7210 + " roam=" + mAutoRoaming 7211 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 7212 + " watchdog= " + obtainingIpWatchdogCount); 7213 } 7214 7215 // Reset link Debouncing, indicating we have successfully re-connected to the AP 7216 // We might still be roaming 7217 linkDebouncing = false; 7218 7219 // Send event to CM & network change broadcast 7220 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 7221 7222 // We must clear the config BSSID, as the wifi chipset may decide to roam 7223 // from this point on and having the BSSID specified in the network block would 7224 // cause the roam to faile and the device to disconnect 7225 clearCurrentConfigBSSID("ObtainingIpAddress"); 7226 7227 try { 7228 mNwService.enableIpv6(mInterfaceName); 7229 } catch (RemoteException re) { 7230 loge("Failed to enable IPv6: " + re); 7231 } catch (IllegalStateException e) { 7232 loge("Failed to enable IPv6: " + e); 7233 } 7234 7235 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 7236 if (isRoaming()) { 7237 renewDhcp(); 7238 } else { 7239 // Remove any IP address on the interface in case we're switching from static 7240 // IP configuration to DHCP. This is safe because if we get here when not 7241 // roaming, we don't have a usable address. 7242 clearIPv4Address(mInterfaceName); 7243 startDhcp(); 7244 } 7245 obtainingIpWatchdogCount++; 7246 loge("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 7247 // Get Link layer stats so as we get fresh tx packet counters 7248 getWifiLinkLayerStats(true); 7249 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 7250 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 7251 } else { 7252 // stop any running dhcp before assigning static IP 7253 stopDhcp(); 7254 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 7255 mLastNetworkId); 7256 if (config.ipAddress == null) { 7257 loge("Static IP lacks address"); 7258 sendMessage(CMD_STATIC_IP_FAILURE); 7259 } else { 7260 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 7261 ifcg.setLinkAddress(config.ipAddress); 7262 ifcg.setInterfaceUp(); 7263 try { 7264 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 7265 if (DBG) log("Static IP configuration succeeded"); 7266 DhcpResults dhcpResults = new DhcpResults(config); 7267 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 7268 } catch (RemoteException re) { 7269 loge("Static IP configuration failed: " + re); 7270 sendMessage(CMD_STATIC_IP_FAILURE); 7271 } catch (IllegalStateException e) { 7272 loge("Static IP configuration failed: " + e); 7273 sendMessage(CMD_STATIC_IP_FAILURE); 7274 } 7275 } 7276 } 7277 } 7278 @Override 7279 public boolean processMessage(Message message) { 7280 logStateAndMessage(message, getClass().getSimpleName()); 7281 7282 switch(message.what) { 7283 case CMD_STATIC_IP_SUCCESS: 7284 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 7285 break; 7286 case CMD_STATIC_IP_FAILURE: 7287 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 7288 break; 7289 case CMD_AUTO_CONNECT: 7290 case CMD_AUTO_ROAM: 7291 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7292 break; 7293 case WifiManager.SAVE_NETWORK: 7294 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7295 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7296 deferMessage(message); 7297 break; 7298 /* Defer any power mode changes since we must keep active power mode at DHCP */ 7299 case CMD_SET_HIGH_PERF_MODE: 7300 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7301 deferMessage(message); 7302 break; 7303 /* Defer scan request since we should not switch to other channels at DHCP */ 7304 case CMD_START_SCAN: 7305 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7306 deferMessage(message); 7307 break; 7308 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 7309 if (message.arg1 == obtainingIpWatchdogCount) { 7310 loge("ObtainingIpAddress: Watchdog Triggered, count=" 7311 + obtainingIpWatchdogCount); 7312 handleIpConfigurationLost(); 7313 transitionTo(mDisconnectingState); 7314 break; 7315 } 7316 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7317 break; 7318 default: 7319 return NOT_HANDLED; 7320 } 7321 return HANDLED; 7322 } 7323 } 7324 7325 class VerifyingLinkState extends State { 7326 @Override 7327 public void enter() { 7328 log(getName() + " enter"); 7329 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 7330 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 7331 sendNetworkStateChangeBroadcast(mLastBssid); 7332 // End roaming 7333 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7334 } 7335 @Override 7336 public boolean processMessage(Message message) { 7337 logStateAndMessage(message, getClass().getSimpleName()); 7338 7339 switch (message.what) { 7340 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7341 // Stay here 7342 log(getName() + " POOR_LINK_DETECTED: no transition"); 7343 break; 7344 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 7345 log(getName() + " GOOD_LINK_DETECTED: transition to captive portal check"); 7346 7347 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 7348 sendConnectedState(); 7349 transitionTo(mConnectedState); 7350 break; 7351 default: 7352 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 7353 return NOT_HANDLED; 7354 } 7355 return HANDLED; 7356 } 7357 } 7358 7359 private void sendConnectedState() { 7360 // Send out a broadcast with the CAPTIVE_PORTAL_CHECK to preserve 7361 // existing behaviour. The captive portal check really happens after we 7362 // transition into DetailedState.CONNECTED. 7363 setNetworkDetailedState(DetailedState.CAPTIVE_PORTAL_CHECK); 7364 mWifiConfigStore.updateStatus(mLastNetworkId, 7365 DetailedState.CAPTIVE_PORTAL_CHECK); 7366 sendNetworkStateChangeBroadcast(mLastBssid); 7367 7368 if (mWifiConfigStore.getLastSelectedConfiguration() != null) { 7369 if (mNetworkAgent != null) mNetworkAgent.explicitlySelected(); 7370 } 7371 7372 setNetworkDetailedState(DetailedState.CONNECTED); 7373 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 7374 sendNetworkStateChangeBroadcast(mLastBssid); 7375 } 7376 7377 class RoamingState extends State { 7378 boolean mAssociated; 7379 @Override 7380 public void enter() { 7381 if (DBG) { 7382 log("RoamingState Enter" 7383 + " mScreenOn=" + mScreenOn ); 7384 } 7385 setScanAlarm(false); 7386 7387 // Make sure we disconnect if roaming fails 7388 roamWatchdogCount++; 7389 loge("Start Roam Watchdog " + roamWatchdogCount); 7390 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 7391 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 7392 mAssociated = false; 7393 } 7394 @Override 7395 public boolean processMessage(Message message) { 7396 logStateAndMessage(message, getClass().getSimpleName()); 7397 7398 switch (message.what) { 7399 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7400 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 7401 return HANDLED; 7402 case CMD_UNWANTED_NETWORK: 7403 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 7404 return HANDLED; 7405 case CMD_SET_OPERATIONAL_MODE: 7406 if (message.arg1 != CONNECT_MODE) { 7407 deferMessage(message); 7408 } 7409 break; 7410 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7411 /** 7412 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 7413 * before NETWORK_DISCONNECTION_EVENT 7414 * And there is an associated BSSID corresponding to our target BSSID, then 7415 * we have missed the network disconnection, transition to mDisconnectedState 7416 * and handle the rest of the events there. 7417 */ 7418 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 7419 if (stateChangeResult.state == SupplicantState.DISCONNECTED 7420 || stateChangeResult.state == SupplicantState.INACTIVE 7421 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 7422 if (DBG) { 7423 log("STATE_CHANGE_EVENT in roaming state " 7424 + stateChangeResult.toString() ); 7425 } 7426 if (stateChangeResult.BSSID != null 7427 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 7428 handleNetworkDisconnect(); 7429 transitionTo(mDisconnectedState); 7430 } 7431 } 7432 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 7433 // We completed the layer2 roaming part 7434 mAssociated = true; 7435 if (stateChangeResult.BSSID != null) { 7436 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 7437 } 7438 } 7439 break; 7440 case CMD_ROAM_WATCHDOG_TIMER: 7441 if (roamWatchdogCount == message.arg1) { 7442 if (DBG) log("roaming watchdog! -> disconnect"); 7443 mRoamFailCount++; 7444 handleNetworkDisconnect(); 7445 mWifiNative.disconnect(); 7446 transitionTo(mDisconnectedState); 7447 } 7448 break; 7449 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7450 if (mAssociated) { 7451 if (DBG) log("roaming and Network connection established"); 7452 mLastNetworkId = message.arg1; 7453 mLastBssid = (String) message.obj; 7454 mWifiInfo.setBSSID(mLastBssid); 7455 mWifiInfo.setNetworkId(mLastNetworkId); 7456 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 7457 transitionTo(mObtainingIpState); 7458 } else { 7459 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7460 } 7461 break; 7462 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7463 // Throw away but only if it corresponds to the network we're roaming to 7464 String bssid = (String)message.obj; 7465 if (true) { 7466 String target = ""; 7467 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 7468 log("NETWORK_DISCONNECTION_EVENT in roaming state" 7469 + " BSSID=" + bssid 7470 + " target=" + target); 7471 } 7472 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 7473 handleNetworkDisconnect(); 7474 transitionTo(mDisconnectedState); 7475 } 7476 break; 7477 case WifiMonitor.SSID_TEMP_DISABLED: 7478 // Auth error while roaming 7479 loge("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 7480 + " id=" + Integer.toString(message.arg1) 7481 + " isRoaming=" + isRoaming() 7482 + " roam=" + Integer.toString(mAutoRoaming)); 7483 if (message.arg1 == mLastNetworkId) { 7484 handleNetworkDisconnect(); 7485 transitionTo(mDisconnectingState); 7486 } 7487 return NOT_HANDLED; 7488 case CMD_START_SCAN: 7489 deferMessage(message); 7490 break; 7491 default: 7492 return NOT_HANDLED; 7493 } 7494 return HANDLED; 7495 } 7496 7497 @Override 7498 public void exit() { 7499 loge("WifiStateMachine: Leaving Roaming state"); 7500 } 7501 } 7502 7503 class ConnectedState extends State { 7504 @Override 7505 public void enter() { 7506 String address; 7507 updateDefaultRouteMacAddress(1000); 7508 if (DBG) { 7509 log("ConnectedState Enter " 7510 + " mScreenOn=" + mScreenOn 7511 + " scanperiod=" 7512 + Integer.toString(mWifiConfigStore.associatedPartialScanPeriodMilli) ); 7513 } 7514 if (mScreenOn 7515 && mWifiConfigStore.enableAutoJoinScanWhenAssociated) { 7516 // restart scan alarm 7517 startDelayedScan(mWifiConfigStore.associatedPartialScanPeriodMilli, null, null); 7518 } 7519 registerConnected(); 7520 lastConnectAttempt = 0; 7521 targetWificonfiguration = null; 7522 // Paranoia 7523 linkDebouncing = false; 7524 7525 // Not roaming anymore 7526 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7527 7528 if (testNetworkDisconnect) { 7529 testNetworkDisconnectCounter++; 7530 loge("ConnectedState Enter start disconnect test " + 7531 testNetworkDisconnectCounter); 7532 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 7533 testNetworkDisconnectCounter, 0), 15000); 7534 } 7535 7536 // Reenable all networks, allow for hidden networks to be scanned 7537 mWifiConfigStore.enableAllNetworks(); 7538 7539 mLastDriverRoamAttempt = 0; 7540 } 7541 @Override 7542 public boolean processMessage(Message message) { 7543 WifiConfiguration config = null; 7544 logStateAndMessage(message, getClass().getSimpleName()); 7545 7546 switch (message.what) { 7547 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7548 if (DBG) log("Watchdog reports poor link"); 7549 transitionTo(mVerifyingLinkState); 7550 break; 7551 case CMD_UNWANTED_NETWORK: 7552 if (message.arg1 == network_status_unwanted_disconnect) { 7553 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 7554 mWifiNative.disconnect(); 7555 transitionTo(mDisconnectingState); 7556 } else if (message.arg1 == network_status_unwanted_disable_autojoin) { 7557 config = getCurrentWifiConfiguration(); 7558 if (config != null) { 7559 // Disable autojoin 7560 config.numNoInternetAccessReports += 1; 7561 } 7562 } 7563 return HANDLED; 7564 case CMD_NETWORK_STATUS: 7565 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 7566 config = getCurrentWifiConfiguration(); 7567 if (config != null) { 7568 // re-enable autojoin 7569 config.numNoInternetAccessReports = 0; 7570 config.validatedInternetAccess = true; 7571 } 7572 } 7573 return HANDLED; 7574 case CMD_TEST_NETWORK_DISCONNECT: 7575 // Force a disconnect 7576 if (message.arg1 == testNetworkDisconnectCounter) { 7577 mWifiNative.disconnect(); 7578 } 7579 break; 7580 case CMD_ASSOCIATED_BSSID: 7581 // ASSOCIATING to a new BSSID while already connected, indicates 7582 // that driver is roaming 7583 mLastDriverRoamAttempt = System.currentTimeMillis(); 7584 String toBSSID = (String)message.obj; 7585 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 7586 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 7587 } 7588 return NOT_HANDLED; 7589 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7590 long lastRoam = 0; 7591 if (mLastDriverRoamAttempt != 0) { 7592 // Calculate time since last driver roam attempt 7593 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 7594 mLastDriverRoamAttempt = 0; 7595 } 7596 config = getCurrentWifiConfiguration(); 7597 if (mScreenOn 7598 && !linkDebouncing 7599 && config != null 7600 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 7601 && !mWifiConfigStore.isLastSelectedConfiguration(config) 7602 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 7603 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 7604 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 7605 && mWifiInfo.getRssi() > 7606 WifiConfiguration.BAD_RSSI_24) 7607 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 7608 && mWifiInfo.getRssi() > 7609 WifiConfiguration.BAD_RSSI_5))) { 7610 // Start de-bouncing the L2 disconnection: 7611 // this L2 disconnection might be spurious. 7612 // Hence we allow 7 seconds for the state machine to try 7613 // to reconnect, go thru the 7614 // roaming cycle and enter Obtaining IP address 7615 // before signalling the disconnect to ConnectivityService and L3 7616 startScanForConfiguration(getCurrentWifiConfiguration(), false); 7617 linkDebouncing = true; 7618 7619 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 7620 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 7621 if (DBG) { 7622 log("NETWORK_DISCONNECTION_EVENT in connected state" 7623 + " BSSID=" + mWifiInfo.getBSSID() 7624 + " RSSI=" + mWifiInfo.getRssi() 7625 + " freq=" + mWifiInfo.getFrequency() 7626 + " reason=" + message.arg2 7627 + " -> debounce"); 7628 } 7629 return HANDLED; 7630 } else { 7631 if (DBG) { 7632 int ajst = -1; 7633 if (config != null) ajst = config.autoJoinStatus; 7634 log("NETWORK_DISCONNECTION_EVENT in connected state" 7635 + " BSSID=" + mWifiInfo.getBSSID() 7636 + " RSSI=" + mWifiInfo.getRssi() 7637 + " freq=" + mWifiInfo.getFrequency() 7638 + " was debouncing=" + linkDebouncing 7639 + " reason=" + message.arg2 7640 + " ajst=" + ajst); 7641 } 7642 } 7643 break; 7644 case CMD_AUTO_ROAM: 7645 // Clear the driver roam indication since we are attempting a framerwork roam 7646 mLastDriverRoamAttempt = 0; 7647 7648 /* Connect command coming from auto-join */ 7649 ScanResult candidate = (ScanResult)message.obj; 7650 String bssid = "any"; 7651 if (candidate != null && candidate.is5GHz()) { 7652 // Only lock BSSID for 5GHz networks 7653 bssid = candidate.BSSID; 7654 } 7655 int netId = mLastNetworkId; 7656 config = getCurrentWifiConfiguration(); 7657 7658 7659 if (config == null) { 7660 loge("AUTO_ROAM and no config, bail out..."); 7661 break; 7662 } 7663 7664 loge("CMD_AUTO_ROAM sup state " 7665 + mSupplicantStateTracker.getSupplicantStateName() 7666 + " my state " + getCurrentState().getName() 7667 + " nid=" + Integer.toString(netId) 7668 + " config " + config.configKey() 7669 + " roam=" + Integer.toString(message.arg2) 7670 + " to " + bssid 7671 + " targetRoamBSSID " + mTargetRoamBSSID); 7672 7673 /* Save the BSSID so as to lock it @ firmware */ 7674 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 7675 loge("AUTO_ROAM nothing to do"); 7676 // Same BSSID, nothing to do 7677 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7678 break; 7679 }; 7680 7681 // Make sure the network is enabled, since supplicant will not reenable it 7682 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7683 7684 boolean ret = false; 7685 if (mLastNetworkId != netId) { 7686 if (mWifiConfigStore.selectNetwork(netId) && 7687 mWifiNative.reconnect()) { 7688 ret = true; 7689 } 7690 } else { 7691 ret = mWifiNative.reassociate(); 7692 } 7693 if (ret) { 7694 lastConnectAttempt = System.currentTimeMillis(); 7695 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7696 7697 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7698 mAutoRoaming = message.arg2; 7699 transitionTo(mRoamingState); 7700 7701 } else { 7702 loge("Failed to connect config: " + config + " netId: " + netId); 7703 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7704 WifiManager.ERROR); 7705 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7706 break; 7707 } 7708 break; 7709 default: 7710 return NOT_HANDLED; 7711 } 7712 return HANDLED; 7713 } 7714 7715 @Override 7716 public void exit() { 7717 loge("WifiStateMachine: Leaving Connected state"); 7718 setScanAlarm(false); 7719 mLastDriverRoamAttempt = 0; 7720 } 7721 } 7722 7723 class DisconnectingState extends State { 7724 7725 @Override 7726 public void enter() { 7727 7728 if (PDBG) { 7729 loge(" Enter DisconnectingState State scan interval " + mFrameworkScanIntervalMs 7730 + " mEnableBackgroundScan= " + mEnableBackgroundScan 7731 + " screenOn=" + mScreenOn); 7732 } 7733 7734 // Make sure we disconnect: we enter this state prior connecting to a new 7735 // network, waiting for either a DISCONECT event or a SUPPLICANT_STATE_CHANGE 7736 // event which in this case will be indicating that supplicant started to associate. 7737 // In some cases supplicant doesn't ignore the connect requests (it might not 7738 // find the target SSID in its cache), 7739 // Therefore we end up stuck that state, hence the need for the watchdog. 7740 disconnectingWatchdogCount++; 7741 loge("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 7742 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 7743 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 7744 } 7745 7746 @Override 7747 public boolean processMessage(Message message) { 7748 logStateAndMessage(message, getClass().getSimpleName()); 7749 switch (message.what) { 7750 case CMD_SET_OPERATIONAL_MODE: 7751 if (message.arg1 != CONNECT_MODE) { 7752 deferMessage(message); 7753 } 7754 break; 7755 case CMD_START_SCAN: 7756 deferMessage(message); 7757 return HANDLED; 7758 case CMD_DISCONNECTING_WATCHDOG_TIMER: 7759 if (disconnectingWatchdogCount == message.arg1) { 7760 if (DBG) log("disconnecting watchdog! -> disconnect"); 7761 handleNetworkDisconnect(); 7762 transitionTo(mDisconnectedState); 7763 } 7764 break; 7765 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7766 /** 7767 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 7768 * we have missed the network disconnection, transition to mDisconnectedState 7769 * and handle the rest of the events there 7770 */ 7771 deferMessage(message); 7772 handleNetworkDisconnect(); 7773 transitionTo(mDisconnectedState); 7774 break; 7775 default: 7776 return NOT_HANDLED; 7777 } 7778 return HANDLED; 7779 } 7780 } 7781 7782 class DisconnectedState extends State { 7783 @Override 7784 public void enter() { 7785 // We dont scan frequently if this is a temporary disconnect 7786 // due to p2p 7787 if (mTemporarilyDisconnectWifi) { 7788 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 7789 return; 7790 } 7791 7792 mFrameworkScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 7793 Settings.Global.WIFI_FRAMEWORK_SCAN_INTERVAL_MS, 7794 mDefaultFrameworkScanIntervalMs); 7795 7796 if (PDBG) { 7797 loge(" Enter disconnected State scan interval " + mFrameworkScanIntervalMs 7798 + " mEnableBackgroundScan= " + mEnableBackgroundScan 7799 + " screenOn=" + mScreenOn 7800 + " mFrameworkScanIntervalMs=" + mFrameworkScanIntervalMs); 7801 } 7802 7803 /** clear the roaming state, if we were roaming, we failed */ 7804 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7805 7806 if (mScreenOn) { 7807 /** 7808 * screen lit and => delayed timer 7809 */ 7810 startDelayedScan(mDisconnectedScanPeriodMs, null, null); 7811 } else { 7812 /** 7813 * screen dark and PNO supported => scan alarm disabled 7814 */ 7815 if (mEnableBackgroundScan) { 7816 /* If a regular scan result is pending, do not initiate background 7817 * scan until the scan results are returned. This is needed because 7818 * initiating a background scan will cancel the regular scan and 7819 * scan results will not be returned until background scanning is 7820 * cleared 7821 */ 7822 if (!mIsScanOngoing) { 7823 enableBackgroundScan(true); 7824 } 7825 } else { 7826 setScanAlarm(true); 7827 } 7828 } 7829 7830 /** 7831 * If we have no networks saved, the supplicant stops doing the periodic scan. 7832 * The scans are useful to notify the user of the presence of an open network. 7833 * Note that these are not wake up scans. 7834 */ 7835 if (!mP2pConnected.get() && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 7836 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 7837 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 7838 } 7839 7840 mDisconnectedTimeStamp = System.currentTimeMillis(); 7841 7842 } 7843 @Override 7844 public boolean processMessage(Message message) { 7845 boolean ret = HANDLED; 7846 7847 logStateAndMessage(message, getClass().getSimpleName()); 7848 7849 switch (message.what) { 7850 case CMD_NO_NETWORKS_PERIODIC_SCAN: 7851 if (mP2pConnected.get()) break; 7852 if (message.arg1 == mPeriodicScanToken && 7853 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 7854 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 7855 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 7856 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 7857 } 7858 break; 7859 case WifiManager.FORGET_NETWORK: 7860 case CMD_REMOVE_NETWORK: 7861 // Set up a delayed message here. After the forget/remove is handled 7862 // the handled delayed message will determine if there is a need to 7863 // scan and continue 7864 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 7865 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 7866 ret = NOT_HANDLED; 7867 break; 7868 case CMD_SET_OPERATIONAL_MODE: 7869 if (message.arg1 != CONNECT_MODE) { 7870 mOperationalMode = message.arg1; 7871 7872 mWifiConfigStore.disableAllNetworks(); 7873 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 7874 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 7875 setWifiState(WIFI_STATE_DISABLED); 7876 } 7877 7878 transitionTo(mScanModeState); 7879 } 7880 break; 7881 /* Ignore network disconnect */ 7882 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7883 break; 7884 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7885 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 7886 if (DBG) { 7887 loge("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 7888 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 7889 + " debouncing=" + linkDebouncing); 7890 } 7891 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 7892 /* ConnectModeState does the rest of the handling */ 7893 ret = NOT_HANDLED; 7894 break; 7895 case CMD_START_SCAN: 7896 if (!checkOrDeferScanAllowed(message)) { 7897 // The scan request was rescheduled 7898 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 7899 return HANDLED; 7900 } 7901 /* Disable background scan temporarily during a regular scan */ 7902 if (mEnableBackgroundScan) { 7903 enableBackgroundScan(false); 7904 } 7905 if (message.arg1 == SCAN_ALARM_SOURCE) { 7906 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 7907 // not be processed) and restart the scan 7908 if (!checkAndRestartDelayedScan(message.arg2, 7909 true, mDisconnectedScanPeriodMs, null, null)) { 7910 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 7911 loge("WifiStateMachine Disconnected CMD_START_SCAN source " 7912 + message.arg1 7913 + " " + message.arg2 + ", " + mDelayedScanCounter 7914 + " -> obsolete"); 7915 return HANDLED; 7916 } 7917 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7918 ret = HANDLED; 7919 } else { 7920 ret = NOT_HANDLED; 7921 } 7922 break; 7923 case WifiMonitor.SCAN_RESULTS_EVENT: 7924 /* Re-enable background scan when a pending scan result is received */ 7925 if (mEnableBackgroundScan && mIsScanOngoing) { 7926 enableBackgroundScan(true); 7927 } 7928 /* Handled in parent state */ 7929 ret = NOT_HANDLED; 7930 break; 7931 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 7932 NetworkInfo info = (NetworkInfo) message.obj; 7933 mP2pConnected.set(info.isConnected()); 7934 if (mP2pConnected.get()) { 7935 int defaultInterval = mContext.getResources().getInteger( 7936 R.integer.config_wifi_scan_interval_p2p_connected); 7937 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 7938 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 7939 defaultInterval); 7940 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 7941 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 7942 if (DBG) log("Turn on scanning after p2p disconnected"); 7943 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 7944 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 7945 } 7946 case CMD_RECONNECT: 7947 case CMD_REASSOCIATE: 7948 if (mTemporarilyDisconnectWifi) { 7949 // Drop a third party reconnect/reassociate if STA is 7950 // temporarily disconnected for p2p 7951 break; 7952 } else { 7953 // ConnectModeState handles it 7954 ret = NOT_HANDLED; 7955 } 7956 break; 7957 case CMD_SCREEN_STATE_CHANGED: 7958 handleScreenStateChanged(message.arg1 != 0, 7959 /* startBackgroundScanIfNeeded = */ true); 7960 break; 7961 default: 7962 ret = NOT_HANDLED; 7963 } 7964 return ret; 7965 } 7966 7967 @Override 7968 public void exit() { 7969 /* No need for a background scan upon exit from a disconnected state */ 7970 if (mEnableBackgroundScan) { 7971 enableBackgroundScan(false); 7972 } 7973 setScanAlarm(false); 7974 } 7975 } 7976 7977 class WpsRunningState extends State { 7978 // Tracks the source to provide a reply 7979 private Message mSourceMessage; 7980 @Override 7981 public void enter() { 7982 mSourceMessage = Message.obtain(getCurrentMessage()); 7983 } 7984 @Override 7985 public boolean processMessage(Message message) { 7986 logStateAndMessage(message, getClass().getSimpleName()); 7987 7988 switch (message.what) { 7989 case WifiMonitor.WPS_SUCCESS_EVENT: 7990 // Ignore intermediate success, wait for full connection 7991 break; 7992 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7993 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 7994 mSourceMessage.recycle(); 7995 mSourceMessage = null; 7996 deferMessage(message); 7997 transitionTo(mDisconnectedState); 7998 break; 7999 case WifiMonitor.WPS_OVERLAP_EVENT: 8000 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8001 WifiManager.WPS_OVERLAP_ERROR); 8002 mSourceMessage.recycle(); 8003 mSourceMessage = null; 8004 transitionTo(mDisconnectedState); 8005 break; 8006 case WifiMonitor.WPS_FAIL_EVENT: 8007 // Arg1 has the reason for the failure 8008 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 8009 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 8010 mSourceMessage.recycle(); 8011 mSourceMessage = null; 8012 transitionTo(mDisconnectedState); 8013 } else { 8014 if (DBG) log("Ignore unspecified fail event during WPS connection"); 8015 } 8016 break; 8017 case WifiMonitor.WPS_TIMEOUT_EVENT: 8018 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8019 WifiManager.WPS_TIMED_OUT); 8020 mSourceMessage.recycle(); 8021 mSourceMessage = null; 8022 transitionTo(mDisconnectedState); 8023 break; 8024 case WifiManager.START_WPS: 8025 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 8026 break; 8027 case WifiManager.CANCEL_WPS: 8028 if (mWifiNative.cancelWps()) { 8029 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 8030 } else { 8031 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 8032 } 8033 transitionTo(mDisconnectedState); 8034 break; 8035 /** 8036 * Defer all commands that can cause connections to a different network 8037 * or put the state machine out of connect mode 8038 */ 8039 case CMD_STOP_DRIVER: 8040 case CMD_SET_OPERATIONAL_MODE: 8041 case WifiManager.CONNECT_NETWORK: 8042 case CMD_ENABLE_NETWORK: 8043 case CMD_RECONNECT: 8044 case CMD_REASSOCIATE: 8045 deferMessage(message); 8046 break; 8047 case CMD_AUTO_CONNECT: 8048 case CMD_AUTO_ROAM: 8049 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8050 return HANDLED; 8051 case CMD_START_SCAN: 8052 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8053 return HANDLED; 8054 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8055 if (DBG) log("Network connection lost"); 8056 handleNetworkDisconnect(); 8057 break; 8058 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 8059 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 8060 break; 8061 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 8062 // Disregard auth failure events during WPS connection. The 8063 // EAP sequence is retried several times, and there might be 8064 // failures (especially for wps pin). We will get a WPS_XXX 8065 // event at the end of the sequence anyway. 8066 if (DBG) log("Ignore auth failure during WPS connection"); 8067 break; 8068 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8069 // Throw away supplicant state changes when WPS is running. 8070 // We will start getting supplicant state changes once we get 8071 // a WPS success or failure 8072 break; 8073 default: 8074 return NOT_HANDLED; 8075 } 8076 return HANDLED; 8077 } 8078 8079 @Override 8080 public void exit() { 8081 mWifiConfigStore.enableAllNetworks(); 8082 mWifiConfigStore.loadConfiguredNetworks(); 8083 } 8084 } 8085 8086 class SoftApStartingState extends State { 8087 @Override 8088 public void enter() { 8089 final Message message = getCurrentMessage(); 8090 if (message.what == CMD_START_AP) { 8091 final WifiConfiguration config = (WifiConfiguration) message.obj; 8092 8093 if (config == null) { 8094 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 8095 } else { 8096 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 8097 startSoftApWithConfig(config); 8098 } 8099 } else { 8100 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 8101 } 8102 } 8103 @Override 8104 public boolean processMessage(Message message) { 8105 logStateAndMessage(message, getClass().getSimpleName()); 8106 8107 switch(message.what) { 8108 case CMD_START_SUPPLICANT: 8109 case CMD_STOP_SUPPLICANT: 8110 case CMD_START_AP: 8111 case CMD_STOP_AP: 8112 case CMD_START_DRIVER: 8113 case CMD_STOP_DRIVER: 8114 case CMD_SET_OPERATIONAL_MODE: 8115 case CMD_SET_COUNTRY_CODE: 8116 case CMD_SET_FREQUENCY_BAND: 8117 case CMD_START_PACKET_FILTERING: 8118 case CMD_STOP_PACKET_FILTERING: 8119 case CMD_TETHER_STATE_CHANGE: 8120 deferMessage(message); 8121 break; 8122 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 8123 WifiConfiguration config = (WifiConfiguration) message.obj; 8124 if (config != null) { 8125 startSoftApWithConfig(config); 8126 } else { 8127 loge("Softap config is null!"); 8128 sendMessage(CMD_START_AP_FAILURE); 8129 } 8130 break; 8131 case CMD_START_AP_SUCCESS: 8132 setWifiApState(WIFI_AP_STATE_ENABLED); 8133 transitionTo(mSoftApStartedState); 8134 break; 8135 case CMD_START_AP_FAILURE: 8136 setWifiApState(WIFI_AP_STATE_FAILED); 8137 transitionTo(mInitialState); 8138 break; 8139 default: 8140 return NOT_HANDLED; 8141 } 8142 return HANDLED; 8143 } 8144 } 8145 8146 class SoftApStartedState extends State { 8147 @Override 8148 public boolean processMessage(Message message) { 8149 logStateAndMessage(message, getClass().getSimpleName()); 8150 8151 switch(message.what) { 8152 case CMD_STOP_AP: 8153 if (DBG) log("Stopping Soft AP"); 8154 /* We have not tethered at this point, so we just shutdown soft Ap */ 8155 try { 8156 mNwService.stopAccessPoint(mInterfaceName); 8157 } catch(Exception e) { 8158 loge("Exception in stopAccessPoint()"); 8159 } 8160 setWifiApState(WIFI_AP_STATE_DISABLED); 8161 transitionTo(mInitialState); 8162 break; 8163 case CMD_START_AP: 8164 // Ignore a start on a running access point 8165 break; 8166 // Fail client mode operation when soft AP is enabled 8167 case CMD_START_SUPPLICANT: 8168 loge("Cannot start supplicant with a running soft AP"); 8169 setWifiState(WIFI_STATE_UNKNOWN); 8170 break; 8171 case CMD_TETHER_STATE_CHANGE: 8172 TetherStateChange stateChange = (TetherStateChange) message.obj; 8173 if (startTethering(stateChange.available)) { 8174 transitionTo(mTetheringState); 8175 } 8176 break; 8177 default: 8178 return NOT_HANDLED; 8179 } 8180 return HANDLED; 8181 } 8182 } 8183 8184 class TetheringState extends State { 8185 @Override 8186 public void enter() { 8187 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8188 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8189 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8190 } 8191 @Override 8192 public boolean processMessage(Message message) { 8193 logStateAndMessage(message, getClass().getSimpleName()); 8194 8195 switch(message.what) { 8196 case CMD_TETHER_STATE_CHANGE: 8197 TetherStateChange stateChange = (TetherStateChange) message.obj; 8198 if (isWifiTethered(stateChange.active)) { 8199 transitionTo(mTetheredState); 8200 } 8201 return HANDLED; 8202 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8203 if (message.arg1 == mTetherToken) { 8204 loge("Failed to get tether update, shutdown soft access point"); 8205 transitionTo(mSoftApStartedState); 8206 // Needs to be first thing handled 8207 sendMessageAtFrontOfQueue(CMD_STOP_AP); 8208 } 8209 break; 8210 case CMD_START_SUPPLICANT: 8211 case CMD_STOP_SUPPLICANT: 8212 case CMD_START_AP: 8213 case CMD_STOP_AP: 8214 case CMD_START_DRIVER: 8215 case CMD_STOP_DRIVER: 8216 case CMD_SET_OPERATIONAL_MODE: 8217 case CMD_SET_COUNTRY_CODE: 8218 case CMD_SET_FREQUENCY_BAND: 8219 case CMD_START_PACKET_FILTERING: 8220 case CMD_STOP_PACKET_FILTERING: 8221 deferMessage(message); 8222 break; 8223 default: 8224 return NOT_HANDLED; 8225 } 8226 return HANDLED; 8227 } 8228 } 8229 8230 class TetheredState extends State { 8231 @Override 8232 public boolean processMessage(Message message) { 8233 logStateAndMessage(message, getClass().getSimpleName()); 8234 8235 switch(message.what) { 8236 case CMD_TETHER_STATE_CHANGE: 8237 TetherStateChange stateChange = (TetherStateChange) message.obj; 8238 if (!isWifiTethered(stateChange.active)) { 8239 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 8240 setHostApRunning(null, false); 8241 setHostApRunning(null, true); 8242 } 8243 return HANDLED; 8244 case CMD_STOP_AP: 8245 if (DBG) log("Untethering before stopping AP"); 8246 setWifiApState(WIFI_AP_STATE_DISABLING); 8247 stopTethering(); 8248 transitionTo(mUntetheringState); 8249 // More work to do after untethering 8250 deferMessage(message); 8251 break; 8252 default: 8253 return NOT_HANDLED; 8254 } 8255 return HANDLED; 8256 } 8257 } 8258 8259 class UntetheringState extends State { 8260 @Override 8261 public void enter() { 8262 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8263 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8264 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8265 8266 } 8267 @Override 8268 public boolean processMessage(Message message) { 8269 logStateAndMessage(message, getClass().getSimpleName()); 8270 8271 switch(message.what) { 8272 case CMD_TETHER_STATE_CHANGE: 8273 TetherStateChange stateChange = (TetherStateChange) message.obj; 8274 8275 /* Wait till wifi is untethered */ 8276 if (isWifiTethered(stateChange.active)) break; 8277 8278 transitionTo(mSoftApStartedState); 8279 break; 8280 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8281 if (message.arg1 == mTetherToken) { 8282 loge("Failed to get tether update, force stop access point"); 8283 transitionTo(mSoftApStartedState); 8284 } 8285 break; 8286 case CMD_START_SUPPLICANT: 8287 case CMD_STOP_SUPPLICANT: 8288 case CMD_START_AP: 8289 case CMD_STOP_AP: 8290 case CMD_START_DRIVER: 8291 case CMD_STOP_DRIVER: 8292 case CMD_SET_OPERATIONAL_MODE: 8293 case CMD_SET_COUNTRY_CODE: 8294 case CMD_SET_FREQUENCY_BAND: 8295 case CMD_START_PACKET_FILTERING: 8296 case CMD_STOP_PACKET_FILTERING: 8297 deferMessage(message); 8298 break; 8299 default: 8300 return NOT_HANDLED; 8301 } 8302 return HANDLED; 8303 } 8304 } 8305 8306 //State machine initiated requests can have replyTo set to null indicating 8307 //there are no recepients, we ignore those reply actions 8308 private void replyToMessage(Message msg, int what) { 8309 if (msg.replyTo == null) return; 8310 Message dstMsg = obtainMessageWithArg2(msg); 8311 dstMsg.what = what; 8312 mReplyChannel.replyToMessage(msg, dstMsg); 8313 } 8314 8315 private void replyToMessage(Message msg, int what, int arg1) { 8316 if (msg.replyTo == null) return; 8317 Message dstMsg = obtainMessageWithArg2(msg); 8318 dstMsg.what = what; 8319 dstMsg.arg1 = arg1; 8320 mReplyChannel.replyToMessage(msg, dstMsg); 8321 } 8322 8323 private void replyToMessage(Message msg, int what, Object obj) { 8324 if (msg.replyTo == null) return; 8325 Message dstMsg = obtainMessageWithArg2(msg); 8326 dstMsg.what = what; 8327 dstMsg.obj = obj; 8328 mReplyChannel.replyToMessage(msg, dstMsg); 8329 } 8330 8331 /** 8332 * arg2 on the source message has a unique id that needs to be retained in replies 8333 * to match the request 8334 8335 * see WifiManager for details 8336 */ 8337 private Message obtainMessageWithArg2(Message srcMsg) { 8338 Message msg = Message.obtain(); 8339 msg.arg2 = srcMsg.arg2; 8340 return msg; 8341 } 8342 8343 private static int parseHex(char ch) { 8344 if ('0' <= ch && ch <= '9') { 8345 return ch - '0'; 8346 } else if ('a' <= ch && ch <= 'f') { 8347 return ch - 'a' + 10; 8348 } else if ('A' <= ch && ch <= 'F') { 8349 return ch - 'A' + 10; 8350 } else { 8351 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 8352 } 8353 } 8354 8355 private byte[] parseHex(String hex) { 8356 /* This only works for good input; don't throw bad data at it */ 8357 if (hex == null) { 8358 return new byte[0]; 8359 } 8360 8361 if (hex.length() % 2 != 0) { 8362 throw new NumberFormatException(hex + " is not a valid hex string"); 8363 } 8364 8365 byte[] result = new byte[(hex.length())/2 + 1]; 8366 result[0] = (byte) ((hex.length())/2); 8367 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 8368 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 8369 byte b = (byte) (val & 0xFF); 8370 result[j] = b; 8371 } 8372 8373 return result; 8374 } 8375 8376 private static String makeHex(byte[] bytes) { 8377 StringBuilder sb = new StringBuilder(); 8378 for (byte b : bytes) { 8379 sb.append(String.format("%02x", b)); 8380 } 8381 return sb.toString(); 8382 } 8383 8384 private static String makeHex(byte[] bytes, int from, int len) { 8385 StringBuilder sb = new StringBuilder(); 8386 for (int i = 0; i < len; i++) { 8387 sb.append(String.format("%02x", bytes[from+i])); 8388 } 8389 return sb.toString(); 8390 } 8391 8392 8393 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 8394 8395 int len = array1.length + array2.length + array3.length; 8396 8397 if (array1.length != 0) { 8398 len++; /* add another byte for size */ 8399 } 8400 8401 if (array2.length != 0) { 8402 len++; /* add another byte for size */ 8403 } 8404 8405 if (array3.length != 0) { 8406 len++; /* add another byte for size */ 8407 } 8408 8409 byte[] result = new byte[len]; 8410 8411 int index = 0; 8412 if (array1.length != 0) { 8413 result[index] = (byte) (array1.length & 0xFF); 8414 index++; 8415 for (byte b : array1) { 8416 result[index] = b; 8417 index++; 8418 } 8419 } 8420 8421 if (array2.length != 0) { 8422 result[index] = (byte) (array2.length & 0xFF); 8423 index++; 8424 for (byte b : array2) { 8425 result[index] = b; 8426 index++; 8427 } 8428 } 8429 8430 if (array3.length != 0) { 8431 result[index] = (byte) (array3.length & 0xFF); 8432 index++; 8433 for (byte b : array3) { 8434 result[index] = b; 8435 index++; 8436 } 8437 } 8438 return result; 8439 } 8440 8441 void handleGsmAuthRequest(SimAuthRequestData requestData) { 8442 if (targetWificonfiguration == null 8443 || targetWificonfiguration.networkId == requestData.networkId) { 8444 logd("id matches targetWifiConfiguration"); 8445 } else { 8446 logd("id does not match targetWifiConfiguration"); 8447 return; 8448 } 8449 8450 TelephonyManager tm = (TelephonyManager) 8451 mContext.getSystemService(Context.TELEPHONY_SERVICE); 8452 8453 if (tm != null) { 8454 StringBuilder sb = new StringBuilder(); 8455 for (String challenge : requestData.challenges) { 8456 8457 logd("RAND = " + challenge); 8458 8459 byte[] rand = null; 8460 try { 8461 rand = parseHex(challenge); 8462 } catch (NumberFormatException e) { 8463 loge("malformed challenge"); 8464 continue; 8465 } 8466 8467 String base64Challenge = android.util.Base64.encodeToString( 8468 rand, android.util.Base64.NO_WRAP); 8469 /* 8470 * appType = 1 => SIM, 2 => USIM according to 8471 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 8472 */ 8473 int appType = 2; 8474 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 8475 logv("Raw Response - " + tmResponse); 8476 8477 if (tmResponse != null && tmResponse.length() > 4) { 8478 byte[] result = android.util.Base64.decode(tmResponse, 8479 android.util.Base64.DEFAULT); 8480 logv("Hex Response -" + makeHex(result)); 8481 int sres_len = result[0]; 8482 String sres = makeHex(result, 1, sres_len); 8483 int kc_offset = 1+sres_len; 8484 int kc_len = result[kc_offset]; 8485 String kc = makeHex(result, 1+kc_offset, kc_len); 8486 sb.append(":" + kc + ":" + sres); 8487 logv("kc:" + kc + " sres:" + sres); 8488 } else { 8489 loge("bad response - " + tmResponse); 8490 } 8491 } 8492 8493 String response = sb.toString(); 8494 logv("Supplicant Response -" + response); 8495 mWifiNative.simAuthResponse(requestData.networkId, response); 8496 } else { 8497 loge("could not get telephony manager"); 8498 } 8499 } 8500 8501 void handle3GAuthRequest(SimAuthRequestData requestData) { 8502 8503 } 8504} 8505