WifiStateMachine.java revision b5120326b58f35217dcedc5f19e8cf3eb42b28d0
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.AlarmManager; 35import android.app.PendingIntent; 36import android.app.backup.IBackupManager; 37import android.bluetooth.BluetoothAdapter; 38import android.content.BroadcastReceiver; 39import android.content.Context; 40import android.content.Intent; 41import android.content.IntentFilter; 42import android.content.pm.PackageManager; 43import android.database.ContentObserver; 44import android.net.ConnectivityManager; 45import android.net.DhcpResults; 46import android.net.DhcpStateMachine; 47import android.net.InterfaceConfiguration; 48import android.net.LinkAddress; 49import android.net.LinkProperties; 50import android.net.NetworkAgent; 51import android.net.NetworkCapabilities; 52import android.net.NetworkFactory; 53import android.net.NetworkInfo; 54import android.net.NetworkInfo.DetailedState; 55import android.net.NetworkRequest; 56import android.net.NetworkUtils; 57import android.net.RouteInfo; 58import android.net.StaticIpConfiguration; 59import android.net.TrafficStats; 60import android.net.wifi.BatchedScanResult; 61import android.net.wifi.BatchedScanSettings; 62import android.net.wifi.RssiPacketCountInfo; 63import android.net.wifi.ScanResult; 64import android.net.wifi.ScanSettings; 65import android.net.wifi.SupplicantState; 66import android.net.wifi.WifiChannel; 67import android.net.wifi.WifiConfiguration; 68import android.net.wifi.WifiConnectionStatistics; 69import android.net.wifi.WifiEnterpriseConfig; 70import android.net.wifi.WifiInfo; 71import android.net.wifi.WifiLinkLayerStats; 72import android.net.wifi.WifiManager; 73import android.net.wifi.WifiSsid; 74import android.net.wifi.WpsInfo; 75import android.net.wifi.WpsResult; 76import android.net.wifi.WpsResult.Status; 77import android.net.wifi.p2p.IWifiP2pManager; 78import android.os.BatteryStats; 79import android.os.Bundle; 80import android.os.IBinder; 81import android.os.INetworkManagementService; 82import android.os.Looper; 83import android.os.Message; 84import android.os.Messenger; 85import android.os.PowerManager; 86import android.os.Process; 87import android.os.RemoteException; 88import android.os.ServiceManager; 89import android.os.SystemClock; 90import android.os.SystemProperties; 91import android.os.UserHandle; 92import android.os.WorkSource; 93import android.provider.Settings; 94import android.telephony.TelephonyManager; 95import android.text.TextUtils; 96import android.util.Log; 97import android.util.LruCache; 98 99import com.android.internal.R; 100import com.android.internal.app.IBatteryStats; 101import com.android.internal.util.AsyncChannel; 102import com.android.internal.util.Protocol; 103import com.android.internal.util.State; 104import com.android.internal.util.StateMachine; 105import com.android.server.net.NetlinkTracker; 106import com.android.server.wifi.p2p.WifiP2pServiceImpl; 107 108import java.io.BufferedReader; 109import java.io.FileDescriptor; 110import java.io.FileNotFoundException; 111import java.io.FileReader; 112import java.io.IOException; 113import java.io.PrintWriter; 114import java.net.Inet4Address; 115import java.net.InetAddress; 116import java.util.ArrayList; 117import java.util.HashSet; 118import java.util.LinkedList; 119import java.util.List; 120import java.util.Locale; 121import java.util.Queue; 122import java.util.concurrent.atomic.AtomicBoolean; 123import java.util.concurrent.atomic.AtomicInteger; 124import java.util.regex.Pattern; 125 126/** 127 * Track the state of Wifi connectivity. All event handling is done here, 128 * and all changes in connectivity state are initiated here. 129 * 130 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 131 * In the current implementation, we support concurrent wifi p2p and wifi operation. 132 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 133 * handles p2p operation. 134 * 135 * @hide 136 */ 137public class WifiStateMachine extends StateMachine { 138 139 private static final String NETWORKTYPE = "WIFI"; 140 private static boolean DBG = false; 141 private static boolean VDBG = false; 142 private static boolean VVDBG = false; 143 private static boolean mLogMessages = false; 144 145 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 146 147 private static final String GOOGLE_OUI = "DA-A1-19"; 148 149 /* temporary debug flag - best network selection development */ 150 private static boolean PDBG = false; 151 152 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 153 * the corresponding BSSID. 154 */ 155 private boolean didBlackListBSSID = false; 156 157 /** 158 * Log with error attribute 159 * 160 * @param s is string log 161 */ 162 protected void loge(String s) { 163 Log.e(getName(), s); 164 } 165 protected void log(String s) {; 166 Log.e(getName(), s); 167 } 168 169 private WifiMonitor mWifiMonitor; 170 private WifiNative mWifiNative; 171 private WifiConfigStore mWifiConfigStore; 172 private WifiAutoJoinController mWifiAutoJoinController; 173 private INetworkManagementService mNwService; 174 private ConnectivityManager mCm; 175 176 private final boolean mP2pSupported; 177 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 178 private boolean mTemporarilyDisconnectWifi = false; 179 private final String mPrimaryDeviceType; 180 181 /* Scan results handling */ 182 private List<ScanResult> mScanResults = new ArrayList<ScanResult>(); 183 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 184 private static final int SCAN_RESULT_CACHE_SIZE = 160; 185 private final LruCache<String, ScanResult> mScanResultCache; 186 // For debug, number of known scan results that were found as part of last scan result event, 187 // as well the number of scans results returned by the supplicant with that message 188 private int mNumScanResultsKnown; 189 private int mNumScanResultsReturned; 190 191 /* Batch scan results */ 192 private final List<BatchedScanResult> mBatchedScanResults = 193 new ArrayList<BatchedScanResult>(); 194 private int mBatchedScanOwnerUid = UNKNOWN_SCAN_SOURCE; 195 private int mExpectedBatchedScans = 0; 196 private long mBatchedScanMinPollTime = 0; 197 198 private boolean mScreenOn = false; 199 200 /* Chipset supports background scan */ 201 private final boolean mBackgroundScanSupported; 202 203 private String mInterfaceName; 204 /* Tethering interface could be separate from wlan interface */ 205 private String mTetherInterfaceName; 206 207 private int mLastSignalLevel = -1; 208 private String mLastBssid; 209 private int mLastNetworkId; // The network Id we successfully joined 210 private boolean linkDebouncing = false; 211 212 // Testing various network disconnect cases by sending lots of spurious 213 // disconnect to supplicant 214 private boolean testNetworkDisconnect = false; 215 216 private boolean mEnableRssiPolling = false; 217 private boolean mEnableBackgroundScan = false; 218 private int mRssiPollToken = 0; 219 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 220 * In CONNECT_MODE, the STA can scan and connect to an access point 221 * In SCAN_ONLY_MODE, the STA can only scan for access points 222 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 223 */ 224 private int mOperationalMode = CONNECT_MODE; 225 private boolean mIsScanOngoing = false; 226 private boolean mIsFullScanOngoing = false; 227 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 228 private WorkSource mScanWorkSource = null; 229 private static final int UNKNOWN_SCAN_SOURCE = -1; 230 private static final int SCAN_ALARM_SOURCE = -2; 231 private static final int ADD_OR_UPDATE_SOURCE = -3; 232 233 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 234 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 235 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 236 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 237 238 private static final String BATCHED_SETTING = "batched_settings"; 239 private static final String BATCHED_WORKSOURCE = "batched_worksource"; 240 241 /* Tracks if state machine has received any screen state change broadcast yet. 242 * We can miss one of these at boot. 243 */ 244 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 245 246 private boolean mBluetoothConnectionActive = false; 247 248 private PowerManager.WakeLock mSuspendWakeLock; 249 250 /** 251 * Interval in milliseconds between polling for RSSI 252 * and linkspeed information 253 */ 254 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 255 256 /** 257 * Interval in milliseconds between receiving a disconnect event 258 * while connected to a good AP, and handling the disconnect proper 259 */ 260 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 261 262 /** 263 * Delay between supplicant restarts upon failure to establish connection 264 */ 265 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 266 267 /** 268 * Number of times we attempt to restart supplicant 269 */ 270 private static final int SUPPLICANT_RESTART_TRIES = 5; 271 272 private int mSupplicantRestartCount = 0; 273 /* Tracks sequence number on stop failure message */ 274 private int mSupplicantStopFailureToken = 0; 275 276 /** 277 * Tether state change notification time out 278 */ 279 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 280 281 /* Tracks sequence number on a tether notification time out */ 282 private int mTetherToken = 0; 283 284 /** 285 * Driver start time out. 286 */ 287 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 288 289 /* Tracks sequence number on a driver time out */ 290 private int mDriverStartToken = 0; 291 292 /** 293 * The link properties of the wifi interface. 294 * Do not modify this directly; use updateLinkProperties instead. 295 */ 296 private LinkProperties mLinkProperties; 297 298 /* Tracks sequence number on a periodic scan message */ 299 private int mPeriodicScanToken = 0; 300 301 // Wakelock held during wifi start/stop and driver load/unload 302 private PowerManager.WakeLock mWakeLock; 303 304 private Context mContext; 305 306 private final Object mDhcpResultsLock = new Object(); 307 private DhcpResults mDhcpResults; 308 private WifiInfo mWifiInfo; 309 private NetworkInfo mNetworkInfo; 310 private NetworkCapabilities mNetworkCapabilities; 311 private SupplicantStateTracker mSupplicantStateTracker; 312 private DhcpStateMachine mDhcpStateMachine; 313 private boolean mDhcpActive = false; 314 315 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 316 317 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 318 319 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 320 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 321 322 // Roaming failure count 323 private int mRoamFailCount = 0; 324 325 // This is the BSSID we are trying to associate to, it can be set to "any" 326 // if we havent selected a BSSID for joining. 327 // The BSSID we are associated to is found in mWifiInfo 328 private String mTargetRoamBSSID = "any"; 329 330 private long mLastDriverRoamAttempt = 0; 331 332 private WifiConfiguration targetWificonfiguration = null; 333 334 // Used as debug to indicate which configuration last was saved 335 private WifiConfiguration lastSavedConfigurationAttempt = null; 336 337 // Used as debug to indicate which configuration last was removed 338 private WifiConfiguration lastForgetConfigurationAttempt = null; 339 340 boolean isRoaming() { 341 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 342 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 343 } 344 345 public void autoRoamSetBSSID(int netId, String bssid) { 346 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 347 } 348 349 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 350 boolean ret = true; 351 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 352 if (bssid == null) bssid = "any"; 353 if (config == null) return false; // Nothing to do 354 355 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 356 return false; // We didnt change anything 357 } 358 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 359 // Changing to ANY 360 if (!mWifiConfigStore.roamOnAny) { 361 ret = false; // Nothing to do 362 } 363 } 364 if (VDBG) { 365 loge("autoRoamSetBSSID " + bssid 366 + " key=" + config.configKey()); 367 } 368 config.autoJoinBSSID = bssid; 369 mTargetRoamBSSID = bssid; 370 mWifiConfigStore.saveWifiConfigBSSID(config); 371 return ret; 372 } 373 374 /** 375 * Subset of link properties coming from netlink. 376 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 377 * and domains obtained from router advertisements (RFC 6106). 378 */ 379 private NetlinkTracker mNetlinkTracker; 380 381 private AlarmManager mAlarmManager; 382 private PendingIntent mScanIntent; 383 private PendingIntent mDriverStopIntent; 384 private PendingIntent mBatchedScanIntervalIntent; 385 386 /* Tracks current frequency mode */ 387 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 388 389 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 390 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 391 392 // Channel for sending replies. 393 private AsyncChannel mReplyChannel = new AsyncChannel(); 394 395 private WifiP2pServiceImpl mWifiP2pServiceImpl; 396 397 // Used to initiate a connection with WifiP2pService 398 private AsyncChannel mWifiP2pChannel; 399 private AsyncChannel mWifiApConfigChannel; 400 401 private int mConnectionRequests = 0; 402 private WifiNetworkFactory mNetworkFactory; 403 private WifiNetworkAgent mNetworkAgent; 404 405 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 406 // We should really persist that into the networkHistory.txt file, and read it back when 407 // WifiStateMachine starts up 408 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 409 410 // Used to filter out requests we couldn't possibly satisfy. 411 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 412 413 /* The base for wifi message types */ 414 static final int BASE = Protocol.BASE_WIFI; 415 /* Start the supplicant */ 416 static final int CMD_START_SUPPLICANT = BASE + 11; 417 /* Stop the supplicant */ 418 static final int CMD_STOP_SUPPLICANT = BASE + 12; 419 /* Start the driver */ 420 static final int CMD_START_DRIVER = BASE + 13; 421 /* Stop the driver */ 422 static final int CMD_STOP_DRIVER = BASE + 14; 423 /* Indicates Static IP succeeded */ 424 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 425 /* Indicates Static IP failed */ 426 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 427 /* Indicates supplicant stop failed */ 428 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 429 /* Delayed stop to avoid shutting down driver too quick*/ 430 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 431 /* A delayed message sent to start driver when it fail to come up */ 432 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 433 434 /* Start the soft access point */ 435 static final int CMD_START_AP = BASE + 21; 436 /* Indicates soft ap start succeeded */ 437 static final int CMD_START_AP_SUCCESS = BASE + 22; 438 /* Indicates soft ap start failed */ 439 static final int CMD_START_AP_FAILURE = BASE + 23; 440 /* Stop the soft access point */ 441 static final int CMD_STOP_AP = BASE + 24; 442 /* Set the soft access point configuration */ 443 static final int CMD_SET_AP_CONFIG = BASE + 25; 444 /* Soft access point configuration set completed */ 445 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 446 /* Request the soft access point configuration */ 447 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 448 /* Response to access point configuration request */ 449 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 450 /* Invoked when getting a tether state change notification */ 451 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 452 /* A delayed message sent to indicate tether state change failed to arrive */ 453 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 454 455 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 456 457 /* Supplicant commands */ 458 /* Is supplicant alive ? */ 459 static final int CMD_PING_SUPPLICANT = BASE + 51; 460 /* Add/update a network configuration */ 461 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 462 /* Delete a network */ 463 static final int CMD_REMOVE_NETWORK = BASE + 53; 464 /* Enable a network. The device will attempt a connection to the given network. */ 465 static final int CMD_ENABLE_NETWORK = BASE + 54; 466 /* Enable all networks */ 467 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 468 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 469 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 470 /* Clear the blacklist network list */ 471 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 472 /* Save configuration */ 473 static final int CMD_SAVE_CONFIG = BASE + 58; 474 /* Get configured networks */ 475 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 476 /* Get available frequencies */ 477 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 478 /* Get adaptors */ 479 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 480 /* Get configured networks with real preSharedKey */ 481 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 482 /* Get Link Layer Stats thru HAL */ 483 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 484 /* Supplicant commands after driver start*/ 485 /* Initiate a scan */ 486 static final int CMD_START_SCAN = BASE + 71; 487 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 488 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 489 /* Disconnect from a network */ 490 static final int CMD_DISCONNECT = BASE + 73; 491 /* Reconnect to a network */ 492 static final int CMD_RECONNECT = BASE + 74; 493 /* Reassociate to a network */ 494 static final int CMD_REASSOCIATE = BASE + 75; 495 /* Get Connection Statistis */ 496 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 497 498 /* Controls suspend mode optimizations 499 * 500 * When high perf mode is enabled, suspend mode optimizations are disabled 501 * 502 * When high perf mode is disabled, suspend mode optimizations are enabled 503 * 504 * Suspend mode optimizations include: 505 * - packet filtering 506 * - turn off roaming 507 * - DTIM wake up settings 508 */ 509 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 510 /* Set the country code */ 511 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 512 /* Enables RSSI poll */ 513 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 514 /* RSSI poll */ 515 static final int CMD_RSSI_POLL = BASE + 83; 516 /* Set up packet filtering */ 517 static final int CMD_START_PACKET_FILTERING = BASE + 84; 518 /* Clear packet filter */ 519 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 520 /* Enable suspend mode optimizations in the driver */ 521 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 522 /* Delayed NETWORK_DISCONNECT */ 523 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 524 /* When there are no saved networks, we do a periodic scan to notify user of 525 * an open network */ 526 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 527 /* Test network Disconnection NETWORK_DISCONNECT */ 528 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 529 private int testNetworkDisconnectCounter = 0; 530 531 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 532 static final int MULTICAST_V6 = 1; 533 static final int MULTICAST_V4 = 0; 534 535 /* Set the frequency band */ 536 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 537 /* Enable TDLS on a specific MAC address */ 538 static final int CMD_ENABLE_TDLS = BASE + 92; 539 /* DHCP/IP configuration watchdog */ 540 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 541 542 /** 543 * Make this timer 40 seconds, which is about the normal DHCP timeout. 544 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 545 * for more than 30 seconds. 546 */ 547 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 548 549 int obtainingIpWatchdogCount = 0; 550 551 /* Commands from/to the SupplicantStateTracker */ 552 /* Reset the supplicant state tracker */ 553 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 554 555 556 /** 557 * Watchdog for protecting against b/16823537 558 * Leave time for 4-ways handshake to succeed 559 */ 560 static final int ROAM_GUARD_TIMER_MSEC = 15000; 561 562 int roamWatchdogCount = 0; 563 /* Roam state watchdog */ 564 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 565 /* Screen change intent handling */ 566 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 567 568 int disconnectingWatchdogCount = 0; 569 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 570 571 /* Disconnecting state watchdog */ 572 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 573 574 /* P2p commands */ 575 /* We are ok with no response here since we wont do much with it anyway */ 576 public static final int CMD_ENABLE_P2P = BASE + 131; 577 /* In order to shut down supplicant cleanly, we wait till p2p has 578 * been disabled */ 579 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 580 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 581 582 public static final int CMD_BOOT_COMPLETED = BASE + 134; 583 584 /* change the batch scan settings. 585 * arg1 = responsible UID 586 * arg2 = csph (channel scans per hour) 587 * obj = bundle with the new settings and the optional worksource 588 */ 589 public static final int CMD_SET_BATCHED_SCAN = BASE + 135; 590 public static final int CMD_START_NEXT_BATCHED_SCAN = BASE + 136; 591 public static final int CMD_POLL_BATCHED_SCAN = BASE + 137; 592 593 /* We now have a valid IP configuration. */ 594 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 595 /* We no longer have a valid IP configuration. */ 596 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 597 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 598 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 599 600 /* Supplicant is trying to associate to a given BSSID */ 601 static final int CMD_TARGET_BSSID = BASE + 141; 602 603 /* Reload all networks and reconnect */ 604 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 605 606 static final int CMD_AUTO_CONNECT = BASE + 143; 607 608 static final int network_status_unwanted_disconnect = 0; 609 static final int network_status_unwanted_disable_autojoin = 1; 610 611 static final int CMD_UNWANTED_NETWORK = BASE + 144; 612 613 static final int CMD_AUTO_ROAM = BASE + 145; 614 615 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 616 617 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 618 619 /* Wifi state machine modes of operation */ 620 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 621 public static final int CONNECT_MODE = 1; 622 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 623 public static final int SCAN_ONLY_MODE = 2; 624 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 625 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 626 627 private static final int SUCCESS = 1; 628 private static final int FAILURE = -1; 629 630 /* Tracks if suspend optimizations need to be disabled by DHCP, 631 * screen or due to high perf mode. 632 * When any of them needs to disable it, we keep the suspend optimizations 633 * disabled 634 */ 635 private int mSuspendOptNeedsDisabled = 0; 636 637 private static final int SUSPEND_DUE_TO_DHCP = 1; 638 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1<<1; 639 private static final int SUSPEND_DUE_TO_SCREEN = 1<<2; 640 641 /* Tracks if user has enabled suspend optimizations through settings */ 642 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 643 644 /** 645 * Default framework scan interval in milliseconds. This is used in the scenario in which 646 * wifi chipset does not support background scanning to set up a 647 * periodic wake up scan so that the device can connect to a new access 648 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 649 * override this. 650 */ 651 private final int mDefaultFrameworkScanIntervalMs; 652 653 private int mDisconnectedScanPeriodMs = 10000; 654 655 /** 656 * Supplicant scan interval in milliseconds. 657 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 658 * from the default config if the setting is not set 659 */ 660 private long mSupplicantScanIntervalMs; 661 662 /** 663 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 664 */ 665 private long lastFullBandConnectedTimeMilli; 666 667 /** 668 * time interval to the next full band scan we will perform for 669 * autojoin while connected with screen lit 670 */ 671 private long fullBandConnectedTimeIntervalMilli; 672 673 /** 674 * max time interval to the next full band scan we will perform for 675 * autojoin while connected with screen lit 676 * Max time is 5 minutes 677 */ 678 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 679 680 /** 681 * Minimum time interval between enabling all networks. 682 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 683 * due to enabling every time. We add a threshold to avoid this. 684 */ 685 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 686 private long mLastEnableAllNetworksTime; 687 688 int mRunningBeaconCount = 0; 689 690 /** 691 * Starting and shutting down driver too quick causes problems leading to driver 692 * being in a bad state. Delay driver stop. 693 */ 694 private final int mDriverStopDelayMs; 695 private int mDelayedStopCounter; 696 private boolean mInDelayedStop = false; 697 698 // sometimes telephony gives us this data before boot is complete and we can't store it 699 // until after, so the write is deferred 700 private volatile String mPersistedCountryCode; 701 702 // Supplicant doesn't like setting the same country code multiple times (it may drop 703 // currently connected network), so we save the country code here to avoid redundency 704 private String mLastSetCountryCode; 705 706 /* Default parent state */ 707 private State mDefaultState = new DefaultState(); 708 /* Temporary initial state */ 709 private State mInitialState = new InitialState(); 710 /* Driver loaded, waiting for supplicant to start */ 711 private State mSupplicantStartingState = new SupplicantStartingState(); 712 /* Driver loaded and supplicant ready */ 713 private State mSupplicantStartedState = new SupplicantStartedState(); 714 /* Waiting for supplicant to stop and monitor to exit */ 715 private State mSupplicantStoppingState = new SupplicantStoppingState(); 716 /* Driver start issued, waiting for completed event */ 717 private State mDriverStartingState = new DriverStartingState(); 718 /* Driver started */ 719 private State mDriverStartedState = new DriverStartedState(); 720 /* Wait until p2p is disabled 721 * This is a special state which is entered right after we exit out of DriverStartedState 722 * before transitioning to another state. 723 */ 724 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 725 /* Driver stopping */ 726 private State mDriverStoppingState = new DriverStoppingState(); 727 /* Driver stopped */ 728 private State mDriverStoppedState = new DriverStoppedState(); 729 /* Scan for networks, no connection will be established */ 730 private State mScanModeState = new ScanModeState(); 731 /* Connecting to an access point */ 732 private State mConnectModeState = new ConnectModeState(); 733 /* Connected at 802.11 (L2) level */ 734 private State mL2ConnectedState = new L2ConnectedState(); 735 /* fetching IP after connection to access point (assoc+auth complete) */ 736 private State mObtainingIpState = new ObtainingIpState(); 737 /* Waiting for link quality verification to be complete */ 738 private State mVerifyingLinkState = new VerifyingLinkState(); 739 /* Connected with IP addr */ 740 private State mConnectedState = new ConnectedState(); 741 /* Roaming */ 742 private State mRoamingState = new RoamingState(); 743 /* disconnect issued, waiting for network disconnect confirmation */ 744 private State mDisconnectingState = new DisconnectingState(); 745 /* Network is not connected, supplicant assoc+auth is not complete */ 746 private State mDisconnectedState = new DisconnectedState(); 747 /* Waiting for WPS to be completed*/ 748 private State mWpsRunningState = new WpsRunningState(); 749 750 /* Soft ap is starting up */ 751 private State mSoftApStartingState = new SoftApStartingState(); 752 /* Soft ap is running */ 753 private State mSoftApStartedState = new SoftApStartedState(); 754 /* Soft ap is running and we are waiting for tether notification */ 755 private State mTetheringState = new TetheringState(); 756 /* Soft ap is running and we are tethered through connectivity service */ 757 private State mTetheredState = new TetheredState(); 758 /* Waiting for untether confirmation before stopping soft Ap */ 759 private State mUntetheringState = new UntetheringState(); 760 761 private class TetherStateChange { 762 ArrayList<String> available; 763 ArrayList<String> active; 764 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 765 available = av; 766 active = ac; 767 } 768 } 769 770 public static class SimAuthRequestData { 771 int networkId; 772 int protocol; 773 String ssid; 774 String[] challenges; 775 } 776 777 public static class SimAuthResponseData { 778 int id; 779 String Kc1; 780 String SRES1; 781 String Kc2; 782 String SRES2; 783 String Kc3; 784 String SRES3; 785 } 786 787 /** 788 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 789 * {@link WifiManager#WIFI_STATE_DISABLING}, 790 * {@link WifiManager#WIFI_STATE_ENABLED}, 791 * {@link WifiManager#WIFI_STATE_ENABLING}, 792 * {@link WifiManager#WIFI_STATE_UNKNOWN} 793 * 794 */ 795 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 796 797 /** 798 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 799 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 800 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 801 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 802 * {@link WifiManager#WIFI_AP_STATE_FAILED} 803 * 804 */ 805 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 806 807 private static final int SCAN_REQUEST = 0; 808 private static final String ACTION_START_SCAN = 809 "com.android.server.WifiManager.action.START_SCAN"; 810 811 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 812 private static final int DRIVER_STOP_REQUEST = 0; 813 private static final String ACTION_DELAYED_DRIVER_STOP = 814 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 815 816 private static final String ACTION_REFRESH_BATCHED_SCAN = 817 "com.android.server.WifiManager.action.REFRESH_BATCHED_SCAN"; 818 /** 819 * Keep track of whether WIFI is running. 820 */ 821 private boolean mIsRunning = false; 822 823 /** 824 * Keep track of whether we last told the battery stats we had started. 825 */ 826 private boolean mReportedRunning = false; 827 828 /** 829 * Most recently set source of starting WIFI. 830 */ 831 private final WorkSource mRunningWifiUids = new WorkSource(); 832 833 /** 834 * The last reported UIDs that were responsible for starting WIFI. 835 */ 836 private final WorkSource mLastRunningWifiUids = new WorkSource(); 837 838 private final IBatteryStats mBatteryStats; 839 840 private BatchedScanSettings mBatchedScanSettings = null; 841 842 /** 843 * Track the worksource/cost of the current settings and track what's been noted 844 * to the battery stats, so we can mark the end of the previous when changing. 845 */ 846 private WorkSource mBatchedScanWorkSource = null; 847 private int mBatchedScanCsph = 0; 848 private WorkSource mNotedBatchedScanWorkSource = null; 849 private int mNotedBatchedScanCsph = 0; 850 851 private String mTcpBufferSizes = null; 852 853 // Used for debug and stats gathering 854 private static int sScanAlarmIntentCount = 0; 855 856 public WifiStateMachine(Context context, String wlanInterface, 857 WifiTrafficPoller trafficPoller){ 858 super("WifiStateMachine"); 859 mContext = context; 860 mInterfaceName = wlanInterface; 861 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 862 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 863 BatteryStats.SERVICE_NAME)); 864 865 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 866 mNwService = INetworkManagementService.Stub.asInterface(b); 867 868 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 869 PackageManager.FEATURE_WIFI_DIRECT); 870 871 mWifiNative = new WifiNative(mInterfaceName); 872 mWifiConfigStore = new WifiConfigStore(context, mWifiNative); 873 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 874 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 875 mWifiMonitor = new WifiMonitor(this, mWifiNative); 876 mWifiInfo = new WifiInfo(); 877 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 878 getHandler()); 879 mLinkProperties = new LinkProperties(); 880 881 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 882 mWifiP2pServiceImpl = (WifiP2pServiceImpl)IWifiP2pManager.Stub.asInterface(s1); 883 884 mNetworkInfo.setIsAvailable(false); 885 mLastBssid = null; 886 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 887 mLastSignalLevel = -1; 888 889 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 890 public void update() { 891 sendMessage(CMD_UPDATE_LINKPROPERTIES); 892 } 893 }); 894 try { 895 mNwService.registerObserver(mNetlinkTracker); 896 } catch (RemoteException e) { 897 loge("Couldn't register netlink tracker: " + e.toString()); 898 } 899 900 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 901 Intent scanIntent = new Intent(ACTION_START_SCAN, null); 902 mScanIntent = PendingIntent.getBroadcast(mContext, SCAN_REQUEST, scanIntent, 0); 903 904 Intent batchedIntent = new Intent(ACTION_REFRESH_BATCHED_SCAN, null); 905 mBatchedScanIntervalIntent = PendingIntent.getBroadcast(mContext, 0, batchedIntent, 0); 906 907 mDefaultFrameworkScanIntervalMs = mContext.getResources().getInteger( 908 R.integer.config_wifi_framework_scan_interval); 909 910 mDriverStopDelayMs = mContext.getResources().getInteger( 911 R.integer.config_wifi_driver_stop_delay); 912 913 mBackgroundScanSupported = mContext.getResources().getBoolean( 914 R.bool.config_wifi_background_scan_support); 915 916 mPrimaryDeviceType = mContext.getResources().getString( 917 R.string.config_wifi_p2p_device_type); 918 919 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 920 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 921 922 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 923 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 924 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 925 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 926 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 927 // TODO - needs to be a bit more dynamic 928 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 929 930 mContext.registerReceiver( 931 new BroadcastReceiver() { 932 @Override 933 public void onReceive(Context context, Intent intent) { 934 ArrayList<String> available = intent.getStringArrayListExtra( 935 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 936 ArrayList<String> active = intent.getStringArrayListExtra( 937 ConnectivityManager.EXTRA_ACTIVE_TETHER); 938 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 939 } 940 },new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 941 942 mContext.registerReceiver( 943 new BroadcastReceiver() { 944 @Override 945 public void onReceive(Context context, Intent intent) { 946 sScanAlarmIntentCount++; 947 startScan(SCAN_ALARM_SOURCE, -2, null, null); 948 if (VDBG) 949 loge("WiFiStateMachine SCAN ALARM"); 950 } 951 }, 952 new IntentFilter(ACTION_START_SCAN)); 953 954 IntentFilter filter = new IntentFilter(); 955 filter.addAction(Intent.ACTION_SCREEN_ON); 956 filter.addAction(Intent.ACTION_SCREEN_OFF); 957 filter.addAction(ACTION_REFRESH_BATCHED_SCAN); 958 mContext.registerReceiver( 959 new BroadcastReceiver() { 960 @Override 961 public void onReceive(Context context, Intent intent) { 962 String action = intent.getAction(); 963 964 if (action.equals(Intent.ACTION_SCREEN_ON)) { 965 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 966 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 967 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 968 } else if (action.equals(ACTION_REFRESH_BATCHED_SCAN)) { 969 startNextBatchedScanAsync(); 970 } 971 } 972 }, filter); 973 974 mContext.registerReceiver( 975 new BroadcastReceiver() { 976 @Override 977 public void onReceive(Context context, Intent intent) { 978 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 979 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 980 } 981 }, 982 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 983 984 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 985 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 986 new ContentObserver(getHandler()) { 987 @Override 988 public void onChange(boolean selfChange) { 989 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 990 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 991 } 992 }); 993 994 mContext.registerReceiver( 995 new BroadcastReceiver() { 996 @Override 997 public void onReceive(Context context, Intent intent) { 998 sendMessage(CMD_BOOT_COMPLETED); 999 } 1000 }, 1001 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1002 1003 mScanResultCache = new LruCache<String, ScanResult>(SCAN_RESULT_CACHE_SIZE); 1004 1005 PowerManager powerManager = (PowerManager)mContext.getSystemService(Context.POWER_SERVICE); 1006 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1007 1008 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1009 mSuspendWakeLock.setReferenceCounted(false); 1010 1011 mTcpBufferSizes = mContext.getResources().getString( 1012 com.android.internal.R.string.config_wifi_tcp_buffers); 1013 1014 addState(mDefaultState); 1015 addState(mInitialState, mDefaultState); 1016 addState(mSupplicantStartingState, mDefaultState); 1017 addState(mSupplicantStartedState, mDefaultState); 1018 addState(mDriverStartingState, mSupplicantStartedState); 1019 addState(mDriverStartedState, mSupplicantStartedState); 1020 addState(mScanModeState, mDriverStartedState); 1021 addState(mConnectModeState, mDriverStartedState); 1022 addState(mL2ConnectedState, mConnectModeState); 1023 addState(mObtainingIpState, mL2ConnectedState); 1024 addState(mVerifyingLinkState, mL2ConnectedState); 1025 addState(mConnectedState, mL2ConnectedState); 1026 addState(mRoamingState, mL2ConnectedState); 1027 addState(mDisconnectingState, mConnectModeState); 1028 addState(mDisconnectedState, mConnectModeState); 1029 addState(mWpsRunningState, mConnectModeState); 1030 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1031 addState(mDriverStoppingState, mSupplicantStartedState); 1032 addState(mDriverStoppedState, mSupplicantStartedState); 1033 addState(mSupplicantStoppingState, mDefaultState); 1034 addState(mSoftApStartingState, mDefaultState); 1035 addState(mSoftApStartedState, mDefaultState); 1036 addState(mTetheringState, mSoftApStartedState); 1037 addState(mTetheredState, mSoftApStartedState); 1038 addState(mUntetheringState, mSoftApStartedState); 1039 1040 setInitialState(mInitialState); 1041 1042 setLogRecSize(3000); 1043 setLogOnlyTransitions(false); 1044 if (VDBG) setDbg(true); 1045 1046 //start the state machine 1047 start(); 1048 1049 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1050 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1051 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1052 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1053 } 1054 1055 private int mVerboseLoggingLevel = 0; 1056 1057 int getVerboseLoggingLevel() { 1058 return mVerboseLoggingLevel; 1059 } 1060 1061 void enableVerboseLogging(int verbose) { 1062 mVerboseLoggingLevel = verbose; 1063 if (verbose > 0) { 1064 DBG = true; 1065 VDBG = true; 1066 PDBG = true; 1067 mLogMessages = true; 1068 mWifiNative.setSupplicantLogLevel("DEBUG"); 1069 } else { 1070 DBG = false; 1071 VDBG = false; 1072 PDBG = false; 1073 mLogMessages = false; 1074 mWifiNative.setSupplicantLogLevel("INFO"); 1075 } 1076 mWifiAutoJoinController.enableVerboseLogging(verbose); 1077 mWifiMonitor.enableVerboseLogging(verbose); 1078 mWifiNative.enableVerboseLogging(verbose); 1079 mWifiConfigStore.enableVerboseLogging(verbose); 1080 mSupplicantStateTracker.enableVerboseLogging(verbose); 1081 } 1082 1083 private int mAggressiveHandover = 0; 1084 1085 int getAggressiveHandover() { 1086 return mAggressiveHandover; 1087 } 1088 1089 void enableAggressiveHandover(int enabled) { 1090 mAggressiveHandover = enabled; 1091 } 1092 1093 public void setAllowScansWithTraffic(int enabled) { 1094 mWifiConfigStore.alwaysEnableScansWhileAssociated = enabled; 1095 } 1096 1097 public int getAllowScansWithTraffic() { 1098 return mWifiConfigStore.alwaysEnableScansWhileAssociated; 1099 } 1100 1101 /* 1102 * 1103 * Framework scan control 1104 */ 1105 1106 private boolean mAlarmEnabled = false; 1107 /* This is set from the overlay config file or from a secure setting. 1108 * A value of 0 disables scanning in the framework. 1109 */ 1110 private long mFrameworkScanIntervalMs = 10000; 1111 1112 private long mCurrentScanAlarmMs = 10000; 1113 private void setScanAlarm(boolean enabled, int delayMilli) { 1114 if (PDBG) { 1115 loge("setScanAlarm " + enabled 1116 + " period " + mCurrentScanAlarmMs 1117 + " initial delay " + delayMilli); 1118 } 1119 if (mCurrentScanAlarmMs <= 0) enabled = false; 1120 if (enabled == mAlarmEnabled) return; 1121 if (enabled) { 1122 long initialDelayMilli; 1123 if (delayMilli <= 0) { 1124 // scan now 1125 startScan(SCAN_ALARM_SOURCE, 0, null, null); 1126 initialDelayMilli = mCurrentScanAlarmMs; 1127 } else { 1128 initialDelayMilli = delayMilli; 1129 } 1130 1131 int type = AlarmManager.RTC; 1132 1133 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1134 /* going to wake up the host processor to look for access points */ 1135 if (mBackgroundScanSupported == false) 1136 type = AlarmManager.RTC_WAKEUP; 1137 1138 mAlarmManager.setRepeating(type, 1139 System.currentTimeMillis() + initialDelayMilli, 1140 mCurrentScanAlarmMs, 1141 mScanIntent); 1142 mAlarmEnabled = true; 1143 } else { 1144 mAlarmManager.cancel(mScanIntent); 1145 mAlarmEnabled = false; 1146 } 1147 } 1148 1149 private boolean setRandomMacOui() { 1150 String oui = mContext.getResources().getString( 1151 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1152 String[] ouiParts = oui.split("-"); 1153 byte[] ouiBytes = new byte[3]; 1154 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1155 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1156 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1157 1158 logd("Setting OUI to " + oui); 1159 return mWifiNative.setScanningMacOui(ouiBytes); 1160 } 1161 1162 /********************************************************* 1163 * Methods exposed for public use 1164 ********************************************************/ 1165 1166 public Messenger getMessenger() { 1167 return new Messenger(getHandler()); 1168 } 1169 1170 public WifiMonitor getWifiMonitor() { 1171 return mWifiMonitor; 1172 } 1173 1174 /** 1175 * TODO: doc 1176 */ 1177 public boolean syncPingSupplicant(AsyncChannel channel) { 1178 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1179 boolean result = (resultMsg.arg1 != FAILURE); 1180 resultMsg.recycle(); 1181 return result; 1182 } 1183 1184 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1185 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1186 List<WifiChannel> list = null; 1187 if (resultMsg.obj != null) { 1188 list = new ArrayList<WifiChannel>(); 1189 String freqs = (String) resultMsg.obj; 1190 String[] lines = freqs.split("\n"); 1191 for (String line : lines) 1192 if (line.contains("MHz")) { 1193 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1194 WifiChannel c = new WifiChannel(); 1195 String[] prop = line.split(" "); 1196 if (prop.length < 5) continue; 1197 try { 1198 c.channelNum = Integer.parseInt(prop[1]); 1199 c.freqMHz = Integer.parseInt(prop[3]); 1200 } catch (NumberFormatException e) { } 1201 c.isDFS = line.contains("(DFS)"); 1202 list.add(c); 1203 } else if (line.contains("Mode[B] Channels:")) { 1204 // B channels are the same as G channels, skipped 1205 break; 1206 } 1207 } 1208 resultMsg.recycle(); 1209 return (list != null && list.size() > 0) ? list : null; 1210 } 1211 1212 1213 /** 1214 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1215 * given to callingUid. 1216 * 1217 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1218 * workSource is specified. 1219 * @param workSource If not null, blame is given to workSource. 1220 * @param settings Scan settings, see {@link ScanSettings}. 1221 */ 1222 public void startScan(int callingUid, int scanCounter, 1223 ScanSettings settings, WorkSource workSource) { 1224 Bundle bundle = new Bundle(); 1225 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1226 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1227 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1228 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1229 } 1230 1231 /** 1232 * start or stop batched scanning using the given settings 1233 */ 1234 public void setBatchedScanSettings(BatchedScanSettings settings, int callingUid, int csph, 1235 WorkSource workSource) { 1236 Bundle bundle = new Bundle(); 1237 bundle.putParcelable(BATCHED_SETTING, settings); 1238 bundle.putParcelable(BATCHED_WORKSOURCE, workSource); 1239 sendMessage(CMD_SET_BATCHED_SCAN, callingUid, csph, bundle); 1240 } 1241 1242 public List<BatchedScanResult> syncGetBatchedScanResultsList() { 1243 synchronized (mBatchedScanResults) { 1244 List<BatchedScanResult> batchedScanList = 1245 new ArrayList<BatchedScanResult>(mBatchedScanResults.size()); 1246 for(BatchedScanResult result: mBatchedScanResults) { 1247 batchedScanList.add(new BatchedScanResult(result)); 1248 } 1249 return batchedScanList; 1250 } 1251 } 1252 1253 public void requestBatchedScanPoll() { 1254 sendMessage(CMD_POLL_BATCHED_SCAN); 1255 } 1256 1257 private void startBatchedScan() { 1258 if (mBatchedScanSettings == null) return; 1259 1260 if (mDhcpActive) { 1261 if (DBG) log("not starting Batched Scans due to DHCP"); 1262 return; 1263 } 1264 1265 // first grab any existing data 1266 retrieveBatchedScanData(); 1267 1268 if (PDBG) loge("try starting Batched Scans due to DHCP"); 1269 1270 1271 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1272 1273 String scansExpected = mWifiNative.setBatchedScanSettings(mBatchedScanSettings); 1274 try { 1275 mExpectedBatchedScans = Integer.parseInt(scansExpected); 1276 setNextBatchedAlarm(mExpectedBatchedScans); 1277 if (mExpectedBatchedScans > 0) noteBatchedScanStart(); 1278 } catch (NumberFormatException e) { 1279 stopBatchedScan(); 1280 loge("Exception parsing WifiNative.setBatchedScanSettings response " + e); 1281 } 1282 } 1283 1284 // called from BroadcastListener 1285 private void startNextBatchedScanAsync() { 1286 sendMessage(CMD_START_NEXT_BATCHED_SCAN); 1287 } 1288 1289 private void startNextBatchedScan() { 1290 // first grab any existing data 1291 retrieveBatchedScanData(); 1292 1293 setNextBatchedAlarm(mExpectedBatchedScans); 1294 } 1295 1296 private void handleBatchedScanPollRequest() { 1297 if (DBG) { 1298 log("handleBatchedScanPoll Request - mBatchedScanMinPollTime=" + 1299 mBatchedScanMinPollTime + " , mBatchedScanSettings=" + 1300 mBatchedScanSettings); 1301 } 1302 // if there is no appropriate PollTime that's because we either aren't 1303 // batching or we've already set a time for a poll request 1304 if (mBatchedScanMinPollTime == 0) return; 1305 if (mBatchedScanSettings == null) return; 1306 1307 long now = System.currentTimeMillis(); 1308 1309 if (now > mBatchedScanMinPollTime) { 1310 // do the poll and reset our timers 1311 startNextBatchedScan(); 1312 } else { 1313 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, mBatchedScanMinPollTime, 1314 mBatchedScanIntervalIntent); 1315 mBatchedScanMinPollTime = 0; 1316 } 1317 } 1318 1319 // return true if new/different 1320 private boolean recordBatchedScanSettings(int responsibleUid, int csph, Bundle bundle) { 1321 BatchedScanSettings settings = bundle.getParcelable(BATCHED_SETTING); 1322 WorkSource responsibleWorkSource = bundle.getParcelable(BATCHED_WORKSOURCE); 1323 1324 if (DBG) { 1325 log("set batched scan to " + settings + " for uid=" + responsibleUid + 1326 ", worksource=" + responsibleWorkSource); 1327 } 1328 if (settings != null) { 1329 if (settings.equals(mBatchedScanSettings)) return false; 1330 } else { 1331 if (mBatchedScanSettings == null) return false; 1332 } 1333 mBatchedScanSettings = settings; 1334 if (responsibleWorkSource == null) responsibleWorkSource = new WorkSource(responsibleUid); 1335 mBatchedScanWorkSource = responsibleWorkSource; 1336 mBatchedScanCsph = csph; 1337 return true; 1338 } 1339 1340 private void stopBatchedScan() { 1341 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1342 retrieveBatchedScanData(); 1343 mWifiNative.setBatchedScanSettings(null); 1344 noteBatchedScanStop(); 1345 } 1346 1347 private void setNextBatchedAlarm(int scansExpected) { 1348 1349 if (mBatchedScanSettings == null || scansExpected < 1) return; 1350 1351 mBatchedScanMinPollTime = System.currentTimeMillis() + 1352 mBatchedScanSettings.scanIntervalSec * 1000; 1353 1354 if (mBatchedScanSettings.maxScansPerBatch < scansExpected) { 1355 scansExpected = mBatchedScanSettings.maxScansPerBatch; 1356 } 1357 1358 int secToFull = mBatchedScanSettings.scanIntervalSec; 1359 secToFull *= scansExpected; 1360 1361 int debugPeriod = SystemProperties.getInt("wifi.batchedScan.pollPeriod", 0); 1362 if (debugPeriod > 0) secToFull = debugPeriod; 1363 1364 // set the alarm to do the next poll. We set it a little short as we'd rather 1365 // wake up wearly than miss a scan due to buffer overflow 1366 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 1367 + ((secToFull - (mBatchedScanSettings.scanIntervalSec / 2)) * 1000), 1368 mBatchedScanIntervalIntent); 1369 } 1370 1371 /** 1372 * Start reading new scan data 1373 * Data comes in as: 1374 * "scancount=5\n" 1375 * "nextcount=5\n" 1376 * "apcount=3\n" 1377 * "trunc\n" (optional) 1378 * "bssid=...\n" 1379 * "ssid=...\n" 1380 * "freq=...\n" (in Mhz) 1381 * "level=...\n" 1382 * "dist=...\n" (in cm) 1383 * "distsd=...\n" (standard deviation, in cm) 1384 * "====" 1385 * "bssid=...\n" 1386 * etc 1387 * "====" 1388 * "bssid=...\n" 1389 * etc 1390 * "%%%%" 1391 * "apcount=2\n" 1392 * "bssid=...\n" 1393 * etc 1394 * "%%%% 1395 * etc 1396 * "----" 1397 */ 1398 private final static boolean DEBUG_PARSE = false; 1399 private void retrieveBatchedScanData() { 1400 String rawData = mWifiNative.getBatchedScanResults(); 1401 if (DEBUG_PARSE) log("rawData = " + rawData); 1402 mBatchedScanMinPollTime = 0; 1403 if (rawData == null || rawData.equalsIgnoreCase("OK")) { 1404 loge("Unexpected BatchedScanResults :" + rawData); 1405 return; 1406 } 1407 1408 int scanCount = 0; 1409 final String END_OF_BATCHES = "----"; 1410 final String SCANCOUNT = "scancount="; 1411 final String TRUNCATED = "trunc"; 1412 final String AGE = "age="; 1413 final String DIST = "dist="; 1414 final String DISTSD = "distSd="; 1415 1416 String splitData[] = rawData.split("\n"); 1417 int n = 0; 1418 if (splitData[n].startsWith(SCANCOUNT)) { 1419 try { 1420 scanCount = Integer.parseInt(splitData[n++].substring(SCANCOUNT.length())); 1421 } catch (NumberFormatException e) { 1422 loge("scancount parseInt Exception from " + splitData[n]); 1423 } 1424 } else log("scancount not found"); 1425 if (scanCount == 0) { 1426 loge("scanCount==0 - aborting"); 1427 return; 1428 } 1429 1430 final Intent intent = new Intent(WifiManager.BATCHED_SCAN_RESULTS_AVAILABLE_ACTION); 1431 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1432 1433 synchronized (mBatchedScanResults) { 1434 mBatchedScanResults.clear(); 1435 BatchedScanResult batchedScanResult = new BatchedScanResult(); 1436 1437 String bssid = null; 1438 WifiSsid wifiSsid = null; 1439 int level = 0; 1440 int freq = 0; 1441 int dist, distSd; 1442 long tsf = 0; 1443 dist = distSd = ScanResult.UNSPECIFIED; 1444 final long now = SystemClock.elapsedRealtime(); 1445 final int bssidStrLen = BSSID_STR.length(); 1446 1447 while (true) { 1448 while (n < splitData.length) { 1449 if (DEBUG_PARSE) logd("parsing " + splitData[n]); 1450 if (splitData[n].equals(END_OF_BATCHES)) { 1451 if (n+1 != splitData.length) { 1452 loge("didn't consume " + (splitData.length-n)); 1453 } 1454 if (mBatchedScanResults.size() > 0) { 1455 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1456 } 1457 logd("retrieveBatchedScanResults X"); 1458 return; 1459 } 1460 if ((splitData[n].equals(END_STR)) || splitData[n].equals(DELIMITER_STR)) { 1461 if (bssid != null) { 1462 batchedScanResult.scanResults.add(new ScanResult( 1463 wifiSsid, bssid, "", level, freq, tsf, dist, distSd)); 1464 wifiSsid = null; 1465 bssid = null; 1466 level = 0; 1467 freq = 0; 1468 tsf = 0; 1469 dist = distSd = ScanResult.UNSPECIFIED; 1470 } 1471 if (splitData[n].equals(END_STR)) { 1472 if (batchedScanResult.scanResults.size() != 0) { 1473 mBatchedScanResults.add(batchedScanResult); 1474 batchedScanResult = new BatchedScanResult(); 1475 } else { 1476 logd("Found empty batch"); 1477 } 1478 } 1479 } else if (splitData[n].equals(TRUNCATED)) { 1480 batchedScanResult.truncated = true; 1481 } else if (splitData[n].startsWith(BSSID_STR)) { 1482 bssid = new String(splitData[n].getBytes(), bssidStrLen, 1483 splitData[n].length() - bssidStrLen); 1484 } else if (splitData[n].startsWith(FREQ_STR)) { 1485 try { 1486 freq = Integer.parseInt(splitData[n].substring(FREQ_STR.length())); 1487 } catch (NumberFormatException e) { 1488 loge("Invalid freqency: " + splitData[n]); 1489 freq = 0; 1490 } 1491 } else if (splitData[n].startsWith(AGE)) { 1492 try { 1493 tsf = now - Long.parseLong(splitData[n].substring(AGE.length())); 1494 tsf *= 1000; // convert mS -> uS 1495 } catch (NumberFormatException e) { 1496 loge("Invalid timestamp: " + splitData[n]); 1497 tsf = 0; 1498 } 1499 } else if (splitData[n].startsWith(SSID_STR)) { 1500 wifiSsid = WifiSsid.createFromAsciiEncoded( 1501 splitData[n].substring(SSID_STR.length())); 1502 } else if (splitData[n].startsWith(LEVEL_STR)) { 1503 try { 1504 level = Integer.parseInt(splitData[n].substring(LEVEL_STR.length())); 1505 if (level > 0) level -= 256; 1506 } catch (NumberFormatException e) { 1507 loge("Invalid level: " + splitData[n]); 1508 level = 0; 1509 } 1510 } else if (splitData[n].startsWith(DIST)) { 1511 try { 1512 dist = Integer.parseInt(splitData[n].substring(DIST.length())); 1513 } catch (NumberFormatException e) { 1514 loge("Invalid distance: " + splitData[n]); 1515 dist = ScanResult.UNSPECIFIED; 1516 } 1517 } else if (splitData[n].startsWith(DISTSD)) { 1518 try { 1519 distSd = Integer.parseInt(splitData[n].substring(DISTSD.length())); 1520 } catch (NumberFormatException e) { 1521 loge("Invalid distanceSd: " + splitData[n]); 1522 distSd = ScanResult.UNSPECIFIED; 1523 } 1524 } else { 1525 loge("Unable to parse batched scan result line: " + splitData[n]); 1526 } 1527 n++; 1528 } 1529 rawData = mWifiNative.getBatchedScanResults(); 1530 if (DEBUG_PARSE) log("reading more data:\n" + rawData); 1531 if (rawData == null) { 1532 loge("Unexpected null BatchedScanResults"); 1533 return; 1534 } 1535 splitData = rawData.split("\n"); 1536 if (splitData.length == 0 || splitData[0].equals("ok")) { 1537 loge("batch scan results just ended!"); 1538 if (mBatchedScanResults.size() > 0) { 1539 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1540 } 1541 return; 1542 } 1543 n = 0; 1544 } 1545 } 1546 } 1547 1548 private long mDisconnectedTimeStamp = 0; 1549 1550 public long getDisconnectedTimeMilli() { 1551 if (getCurrentState() == mDisconnectedState 1552 && mDisconnectedTimeStamp != 0) { 1553 long now_ms = System.currentTimeMillis(); 1554 return now_ms - mDisconnectedTimeStamp; 1555 } 1556 return 0; 1557 } 1558 1559 // Keeping track of scan requests 1560 private long lastStartScanTimeStamp = 0; 1561 private long lastScanDuration = 0; 1562 // Last connect attempt is used to prevent scan requests: 1563 // - for a period of 10 seconds after attempting to connect 1564 private long lastConnectAttempt = 0; 1565 private String lastScanFreqs = null; 1566 1567 // For debugging, keep track of last message status handling 1568 // TODO, find an equivalent mechanism as part of parent class 1569 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1570 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1571 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1572 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1573 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1574 private static int MESSAGE_HANDLING_STATUS_BUFFERED = -3; 1575 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1576 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1577 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1578 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1579 1580 private int messageHandlingStatus = 0; 1581 1582 //TODO: this is used only to track connection attempts, however the link state and packet per 1583 //TODO: second logic should be folded into that 1584 private boolean isScanAllowed() { 1585 long now = System.currentTimeMillis(); 1586 if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { 1587 return false; 1588 } 1589 return true; 1590 } 1591 1592 private int mOnTime = 0; 1593 private int mTxTime = 0; 1594 private int mRxTime = 0; 1595 private int mOnTimeStartScan = 0; 1596 private int mTxTimeStartScan = 0; 1597 private int mRxTimeStartScan = 0; 1598 private int mOnTimeScan = 0; 1599 private int mTxTimeScan = 0; 1600 private int mRxTimeScan = 0; 1601 private int mOnTimeThisScan = 0; 1602 private int mTxTimeThisScan = 0; 1603 private int mRxTimeThisScan = 0; 1604 1605 private int mOnTimeScreenStateChange = 0; 1606 private int mOnTimeAtLastReport = 0; 1607 private long lastOntimeReportTimeStamp = 0; 1608 private long lastScreenStateChangeTimeStamp = 0; 1609 private int mOnTimeLastReport = 0; 1610 private int mTxTimeLastReport = 0; 1611 private int mRxTimeLastReport = 0; 1612 1613 private long lastLinkLayerStatsUpdate = 0; 1614 1615 String reportOnTime() { 1616 long now = System.currentTimeMillis(); 1617 StringBuilder sb = new StringBuilder(); 1618 // Report stats since last report 1619 int on = mOnTime - mOnTimeLastReport; 1620 mOnTimeLastReport = mOnTime; 1621 int tx = mTxTime - mTxTimeLastReport; 1622 mTxTimeLastReport = mTxTime; 1623 int rx = mRxTime - mRxTimeLastReport; 1624 mRxTimeLastReport = mRxTime; 1625 int period = (int)(now - lastOntimeReportTimeStamp); 1626 lastOntimeReportTimeStamp = now; 1627 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1628 // Report stats since Screen State Changed 1629 on = mOnTime - mOnTimeScreenStateChange; 1630 period = (int)(now - lastScreenStateChangeTimeStamp); 1631 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1632 return sb.toString(); 1633 } 1634 1635 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1636 WifiLinkLayerStats stats = null; 1637 if (mWifiLinkLayerStatsSupported > 0) { 1638 String name = "wlan0"; 1639 stats = mWifiNative.getWifiLinkLayerStats(name); 1640 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1641 mWifiLinkLayerStatsSupported -= 1; 1642 } else if (stats != null) { 1643 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1644 mOnTime = stats.on_time; 1645 mTxTime = stats.tx_time; 1646 mRxTime = stats.rx_time; 1647 mRunningBeaconCount = stats.beacon_rx; 1648 if (dbg) { 1649 loge("WifiLinkLayerStats:"); 1650 loge(stats.toString()); 1651 } 1652 } 1653 } 1654 return stats; 1655 } 1656 1657 void startRadioScanStats() { 1658 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1659 if (stats != null) { 1660 mOnTimeStartScan = stats.on_time; 1661 mTxTimeStartScan = stats.tx_time; 1662 mRxTimeStartScan = stats.rx_time; 1663 mOnTime = stats.on_time; 1664 mTxTime = stats.tx_time; 1665 mRxTime = stats.rx_time; 1666 } 1667 } 1668 1669 void closeRadioScanStats() { 1670 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1671 if (stats != null) { 1672 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1673 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1674 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1675 mOnTimeScan += mOnTimeThisScan; 1676 mTxTimeScan += mTxTimeThisScan; 1677 mRxTimeScan += mRxTimeThisScan; 1678 } 1679 } 1680 1681 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1682 private void noteScanStart(int callingUid, WorkSource workSource) { 1683 long now = System.currentTimeMillis(); 1684 lastStartScanTimeStamp = now; 1685 lastScanDuration = 0; 1686 if (DBG) { 1687 String ts = String.format("[%,d ms]", now); 1688 if (workSource != null) { 1689 loge(ts + " noteScanStart" + workSource.toString() 1690 + " uid " + Integer.toString(callingUid)); 1691 } else { 1692 loge(ts + " noteScanstart no scan source"); 1693 } 1694 } 1695 startRadioScanStats(); 1696 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1697 && callingUid != SCAN_ALARM_SOURCE) 1698 || workSource != null)) { 1699 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1700 try { 1701 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 1702 } catch (RemoteException e) { 1703 log(e.toString()); 1704 } 1705 } 1706 } 1707 1708 private void noteScanEnd() { 1709 long now = System.currentTimeMillis(); 1710 if (lastStartScanTimeStamp != 0) { 1711 lastScanDuration = now - lastStartScanTimeStamp; 1712 } 1713 lastStartScanTimeStamp = 0; 1714 if (DBG) { 1715 String ts = String.format("[%,d ms]", now); 1716 if (mScanWorkSource != null) 1717 loge(ts + " noteScanEnd " + mScanWorkSource.toString()); 1718 else 1719 loge(ts + " noteScanEnd no scan source"); 1720 } 1721 if (mScanWorkSource != null) { 1722 try { 1723 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1724 } catch (RemoteException e) { 1725 log(e.toString()); 1726 } finally { 1727 mScanWorkSource = null; 1728 } 1729 } 1730 } 1731 1732 private void noteBatchedScanStart() { 1733 if (PDBG) loge("noteBatchedScanstart()"); 1734 // note the end of a previous scan set 1735 if (mNotedBatchedScanWorkSource != null && 1736 (mNotedBatchedScanWorkSource.equals(mBatchedScanWorkSource) == false || 1737 mNotedBatchedScanCsph != mBatchedScanCsph)) { 1738 try { 1739 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1740 } catch (RemoteException e) { 1741 log(e.toString()); 1742 } finally { 1743 mNotedBatchedScanWorkSource = null; 1744 mNotedBatchedScanCsph = 0; 1745 } 1746 } 1747 // note the start of the new 1748 try { 1749 mBatteryStats.noteWifiBatchedScanStartedFromSource(mBatchedScanWorkSource, 1750 mBatchedScanCsph); 1751 mNotedBatchedScanWorkSource = mBatchedScanWorkSource; 1752 mNotedBatchedScanCsph = mBatchedScanCsph; 1753 } catch (RemoteException e) { 1754 log(e.toString()); 1755 } 1756 } 1757 1758 private void noteBatchedScanStop() { 1759 if (PDBG) loge("noteBatchedScanstop()"); 1760 1761 if (mNotedBatchedScanWorkSource != null) { 1762 try { 1763 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1764 } catch (RemoteException e) { 1765 log(e.toString()); 1766 } finally { 1767 mNotedBatchedScanWorkSource = null; 1768 mNotedBatchedScanCsph = 0; 1769 } 1770 } 1771 } 1772 1773 private void handleScanRequest(int type, Message message) { 1774 // unbundle parameters 1775 Bundle bundle = (Bundle) message.obj; 1776 ScanSettings settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1777 WorkSource workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1778 1779 // parse scan settings 1780 String freqs = null; 1781 if (settings != null && settings.channelSet != null) { 1782 StringBuilder sb = new StringBuilder(); 1783 boolean first = true; 1784 for (WifiChannel channel : settings.channelSet) { 1785 if (!first) sb.append(','); else first = false; 1786 sb.append(channel.freqMHz); 1787 } 1788 freqs = sb.toString(); 1789 } 1790 1791 // call wifi native to start the scan 1792 if (startScanNative(type, freqs)) { 1793 // only count battery consumption if scan request is accepted 1794 noteScanStart(message.arg1, workSource); 1795 // a full scan covers everything, clearing scan request buffer 1796 if (freqs == null) 1797 mBufferedScanMsg.clear(); 1798 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1799 return; 1800 } 1801 1802 // if reach here, scan request is rejected 1803 1804 if (!mIsScanOngoing) { 1805 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1806 1807 // discard this request and pop up the next one 1808 if (mBufferedScanMsg.size() > 0) { 1809 sendMessage(mBufferedScanMsg.remove()); 1810 } 1811 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 1812 } else if (!mIsFullScanOngoing) { 1813 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 1814 // buffer the scan request to make sure specified channels will be scanned eventually 1815 if (freqs == null) 1816 mBufferedScanMsg.clear(); 1817 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 1818 Message msg = obtainMessage(CMD_START_SCAN, 1819 message.arg1, message.arg2, bundle); 1820 mBufferedScanMsg.add(msg); 1821 } else { 1822 // if too many requests in buffer, combine them into a single full scan 1823 bundle = new Bundle(); 1824 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 1825 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1826 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 1827 mBufferedScanMsg.clear(); 1828 mBufferedScanMsg.add(msg); 1829 } 1830 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 1831 } else { 1832 // mIsScanOngoing and mIsFullScanOngoing 1833 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 1834 } 1835 } 1836 1837 1838 /** return true iff scan request is accepted */ 1839 private boolean startScanNative(int type, String freqs) { 1840 if (mWifiNative.scan(type, freqs)) { 1841 mIsScanOngoing = true; 1842 mIsFullScanOngoing = (freqs == null); 1843 lastScanFreqs = freqs; 1844 return true; 1845 } 1846 return false; 1847 } 1848 1849 /** 1850 * TODO: doc 1851 */ 1852 public void setSupplicantRunning(boolean enable) { 1853 if (enable) { 1854 sendMessage(CMD_START_SUPPLICANT); 1855 } else { 1856 sendMessage(CMD_STOP_SUPPLICANT); 1857 } 1858 } 1859 1860 /** 1861 * TODO: doc 1862 */ 1863 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 1864 if (enable) { 1865 sendMessage(CMD_START_AP, wifiConfig); 1866 } else { 1867 sendMessage(CMD_STOP_AP); 1868 } 1869 } 1870 1871 public void setWifiApConfiguration(WifiConfiguration config) { 1872 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 1873 } 1874 1875 public WifiConfiguration syncGetWifiApConfiguration() { 1876 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 1877 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 1878 resultMsg.recycle(); 1879 return ret; 1880 } 1881 1882 /** 1883 * TODO: doc 1884 */ 1885 public int syncGetWifiState() { 1886 return mWifiState.get(); 1887 } 1888 1889 /** 1890 * TODO: doc 1891 */ 1892 public String syncGetWifiStateByName() { 1893 switch (mWifiState.get()) { 1894 case WIFI_STATE_DISABLING: 1895 return "disabling"; 1896 case WIFI_STATE_DISABLED: 1897 return "disabled"; 1898 case WIFI_STATE_ENABLING: 1899 return "enabling"; 1900 case WIFI_STATE_ENABLED: 1901 return "enabled"; 1902 case WIFI_STATE_UNKNOWN: 1903 return "unknown state"; 1904 default: 1905 return "[invalid state]"; 1906 } 1907 } 1908 1909 /** 1910 * TODO: doc 1911 */ 1912 public int syncGetWifiApState() { 1913 return mWifiApState.get(); 1914 } 1915 1916 /** 1917 * TODO: doc 1918 */ 1919 public String syncGetWifiApStateByName() { 1920 switch (mWifiApState.get()) { 1921 case WIFI_AP_STATE_DISABLING: 1922 return "disabling"; 1923 case WIFI_AP_STATE_DISABLED: 1924 return "disabled"; 1925 case WIFI_AP_STATE_ENABLING: 1926 return "enabling"; 1927 case WIFI_AP_STATE_ENABLED: 1928 return "enabled"; 1929 case WIFI_AP_STATE_FAILED: 1930 return "failed"; 1931 default: 1932 return "[invalid state]"; 1933 } 1934 } 1935 1936 /** 1937 * Get status information for the current connection, if any. 1938 * @return a {@link WifiInfo} object containing information about the current connection 1939 * 1940 */ 1941 public WifiInfo syncRequestConnectionInfo() { 1942 return mWifiInfo; 1943 } 1944 1945 public DhcpResults syncGetDhcpResults() { 1946 synchronized (mDhcpResultsLock) { 1947 return new DhcpResults(mDhcpResults); 1948 } 1949 } 1950 1951 /** 1952 * TODO: doc 1953 */ 1954 public void setDriverStart(boolean enable) { 1955 if (enable) { 1956 sendMessage(CMD_START_DRIVER); 1957 } else { 1958 sendMessage(CMD_STOP_DRIVER); 1959 } 1960 } 1961 1962 /** 1963 * TODO: doc 1964 */ 1965 public void setOperationalMode(int mode) { 1966 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 1967 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 1968 } 1969 1970 /** 1971 * TODO: doc 1972 */ 1973 public List<ScanResult> syncGetScanResultsList() { 1974 synchronized (mScanResultCache) { 1975 List<ScanResult> scanList = new ArrayList<ScanResult>(); 1976 for(ScanResult result: mScanResults) { 1977 scanList.add(new ScanResult(result)); 1978 } 1979 return scanList; 1980 } 1981 } 1982 1983 /** 1984 * Get unsynchronized pointer to scan result list 1985 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 1986 */ 1987 public List<ScanResult> getScanResultsListNoCopyUnsync() { 1988 return mScanResults; 1989 } 1990 1991 /** 1992 * Disconnect from Access Point 1993 */ 1994 public void disconnectCommand() { 1995 sendMessage(CMD_DISCONNECT); 1996 } 1997 1998 /** 1999 * Initiate a reconnection to AP 2000 */ 2001 public void reconnectCommand() { 2002 sendMessage(CMD_RECONNECT); 2003 } 2004 2005 /** 2006 * Initiate a re-association to AP 2007 */ 2008 public void reassociateCommand() { 2009 sendMessage(CMD_REASSOCIATE); 2010 } 2011 2012 /** 2013 * Reload networks and then reconnect; helps load correct data for TLS networks 2014 */ 2015 2016 public void reloadTlsNetworksAndReconnect() { 2017 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2018 } 2019 2020 /** 2021 * Add a network synchronously 2022 * 2023 * @return network id of the new network 2024 */ 2025 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2026 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2027 int result = resultMsg.arg1; 2028 resultMsg.recycle(); 2029 return result; 2030 } 2031 2032 /** 2033 * Get configured networks synchronously 2034 * @param channel 2035 * @return 2036 */ 2037 2038 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2039 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2040 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2041 resultMsg.recycle(); 2042 return result; 2043 } 2044 2045 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2046 Message resultMsg = channel.sendMessageSynchronously( 2047 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2048 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2049 resultMsg.recycle(); 2050 return result; 2051 } 2052 2053 2054 /** 2055 * Get connection statistics synchronously 2056 * @param channel 2057 * @return 2058 */ 2059 2060 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2061 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2062 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2063 resultMsg.recycle(); 2064 return result; 2065 } 2066 2067 /** 2068 * Get adaptors synchronously 2069 */ 2070 2071 public int syncGetSupportedFeatures(AsyncChannel channel) { 2072 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2073 int supportedFeatureSet = resultMsg.arg1; 2074 resultMsg.recycle(); 2075 return supportedFeatureSet; 2076 } 2077 2078 /** 2079 * Get link layers stats for adapter synchronously 2080 */ 2081 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2082 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2083 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2084 resultMsg.recycle(); 2085 return result; 2086 } 2087 2088 /** 2089 * Delete a network 2090 * 2091 * @param networkId id of the network to be removed 2092 */ 2093 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2094 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2095 boolean result = (resultMsg.arg1 != FAILURE); 2096 resultMsg.recycle(); 2097 return result; 2098 } 2099 2100 /** 2101 * Enable a network 2102 * 2103 * @param netId network id of the network 2104 * @param disableOthers true, if all other networks have to be disabled 2105 * @return {@code true} if the operation succeeds, {@code false} otherwise 2106 */ 2107 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2108 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2109 disableOthers ? 1 : 0); 2110 boolean result = (resultMsg.arg1 != FAILURE); 2111 resultMsg.recycle(); 2112 return result; 2113 } 2114 2115 /** 2116 * Disable a network 2117 * 2118 * @param netId network id of the network 2119 * @return {@code true} if the operation succeeds, {@code false} otherwise 2120 */ 2121 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2122 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2123 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2124 resultMsg.recycle(); 2125 return result; 2126 } 2127 2128 /** 2129 * Retrieves a WPS-NFC configuration token for the specified network 2130 * @return a hex string representation of the WPS-NFC configuration token 2131 */ 2132 public String syncGetWpsNfcConfigurationToken(int netId) { 2133 return mWifiNative.getNfcWpsConfigurationToken(netId); 2134 } 2135 2136 /** 2137 * Blacklist a BSSID. This will avoid the AP if there are 2138 * alternate APs to connect 2139 * 2140 * @param bssid BSSID of the network 2141 */ 2142 public void addToBlacklist(String bssid) { 2143 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2144 } 2145 2146 /** 2147 * Clear the blacklist list 2148 * 2149 */ 2150 public void clearBlacklist() { 2151 sendMessage(CMD_CLEAR_BLACKLIST); 2152 } 2153 2154 public void enableRssiPolling(boolean enabled) { 2155 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2156 } 2157 2158 public void enableAllNetworks() { 2159 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2160 } 2161 2162 /** 2163 * Start filtering Multicast v4 packets 2164 */ 2165 public void startFilteringMulticastV4Packets() { 2166 mFilteringMulticastV4Packets.set(true); 2167 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2168 } 2169 2170 /** 2171 * Stop filtering Multicast v4 packets 2172 */ 2173 public void stopFilteringMulticastV4Packets() { 2174 mFilteringMulticastV4Packets.set(false); 2175 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2176 } 2177 2178 /** 2179 * Start filtering Multicast v4 packets 2180 */ 2181 public void startFilteringMulticastV6Packets() { 2182 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2183 } 2184 2185 /** 2186 * Stop filtering Multicast v4 packets 2187 */ 2188 public void stopFilteringMulticastV6Packets() { 2189 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2190 } 2191 2192 /** 2193 * Set high performance mode of operation. 2194 * Enabling would set active power mode and disable suspend optimizations; 2195 * disabling would set auto power mode and enable suspend optimizations 2196 * @param enable true if enable, false otherwise 2197 */ 2198 public void setHighPerfModeEnabled(boolean enable) { 2199 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2200 } 2201 2202 /** 2203 * Set the country code 2204 * @param countryCode following ISO 3166 format 2205 * @param persist {@code true} if the setting should be remembered. 2206 */ 2207 public void setCountryCode(String countryCode, boolean persist) { 2208 // If it's a good country code, apply after the current 2209 // wifi connection is terminated; ignore resetting of code 2210 // for now (it is unclear what the chipset should do when 2211 // country code is reset) 2212 int countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2213 if (TextUtils.isEmpty(countryCode)) { 2214 log("Ignoring resetting of country code"); 2215 } else { 2216 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, countryCode); 2217 } 2218 } 2219 2220 /** 2221 * Set the operational frequency band 2222 * @param band 2223 * @param persist {@code true} if the setting should be remembered. 2224 */ 2225 public void setFrequencyBand(int band, boolean persist) { 2226 if (persist) { 2227 Settings.Global.putInt(mContext.getContentResolver(), 2228 Settings.Global.WIFI_FREQUENCY_BAND, 2229 band); 2230 } 2231 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2232 } 2233 2234 /** 2235 * Enable TDLS for a specific MAC address 2236 */ 2237 public void enableTdls(String remoteMacAddress, boolean enable) { 2238 int enabler = enable ? 1 : 0; 2239 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2240 } 2241 2242 /** 2243 * Returns the operational frequency band 2244 */ 2245 public int getFrequencyBand() { 2246 return mFrequencyBand.get(); 2247 } 2248 2249 /** 2250 * Returns the wifi configuration file 2251 */ 2252 public String getConfigFile() { 2253 return mWifiConfigStore.getConfigFile(); 2254 } 2255 2256 /** 2257 * Send a message indicating bluetooth adapter connection state changed 2258 */ 2259 public void sendBluetoothAdapterStateChange(int state) { 2260 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2261 } 2262 2263 /** 2264 * Save configuration on supplicant 2265 * 2266 * @return {@code true} if the operation succeeds, {@code false} otherwise 2267 * 2268 * TODO: deprecate this 2269 */ 2270 public boolean syncSaveConfig(AsyncChannel channel) { 2271 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2272 boolean result = (resultMsg.arg1 != FAILURE); 2273 resultMsg.recycle(); 2274 return result; 2275 } 2276 2277 public void updateBatteryWorkSource(WorkSource newSource) { 2278 synchronized (mRunningWifiUids) { 2279 try { 2280 if (newSource != null) { 2281 mRunningWifiUids.set(newSource); 2282 } 2283 if (mIsRunning) { 2284 if (mReportedRunning) { 2285 // If the work source has changed since last time, need 2286 // to remove old work from battery stats. 2287 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2288 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2289 mRunningWifiUids); 2290 mLastRunningWifiUids.set(mRunningWifiUids); 2291 } 2292 } else { 2293 // Now being started, report it. 2294 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2295 mLastRunningWifiUids.set(mRunningWifiUids); 2296 mReportedRunning = true; 2297 } 2298 } else { 2299 if (mReportedRunning) { 2300 // Last reported we were running, time to stop. 2301 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2302 mLastRunningWifiUids.clear(); 2303 mReportedRunning = false; 2304 } 2305 } 2306 mWakeLock.setWorkSource(newSource); 2307 } catch (RemoteException ignore) { 2308 } 2309 } 2310 } 2311 2312 @Override 2313 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2314 super.dump(fd, pw, args); 2315 mSupplicantStateTracker.dump(fd, pw, args); 2316 pw.println("mLinkProperties " + mLinkProperties); 2317 pw.println("mWifiInfo " + mWifiInfo); 2318 pw.println("mDhcpResults " + mDhcpResults); 2319 pw.println("mNetworkInfo " + mNetworkInfo); 2320 pw.println("mLastSignalLevel " + mLastSignalLevel); 2321 pw.println("mLastBssid " + mLastBssid); 2322 pw.println("mLastNetworkId " + mLastNetworkId); 2323 pw.println("mOperationalMode " + mOperationalMode); 2324 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2325 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2326 pw.println("Supplicant status " + mWifiNative.status(true)); 2327 pw.println("mEnableBackgroundScan " + mEnableBackgroundScan); 2328 pw.println("mLastSetCountryCode " + mLastSetCountryCode); 2329 pw.println("mPersistedCountryCode " + mPersistedCountryCode); 2330 mNetworkFactory.dump(fd, pw, args); 2331 pw.println(); 2332 mWifiConfigStore.dump(fd, pw, args); 2333 } 2334 2335 /********************************************************* 2336 * Internal private functions 2337 ********************************************************/ 2338 2339 private void logStateAndMessage(Message message, String state) { 2340 messageHandlingStatus = 0; 2341 if (mLogMessages) { 2342 //long now = SystemClock.elapsedRealtimeNanos(); 2343 //String ts = String.format("[%,d us]", now/1000); 2344 2345 loge( " " + state + " " + getLogRecString(message)); 2346 } 2347 } 2348 2349 /** 2350 * helper, prints the milli time since boot wi and w/o suspended time 2351 */ 2352 String printTime() { 2353 StringBuilder sb = new StringBuilder(); 2354 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2355 sb.append("/").append(SystemClock.elapsedRealtime()); 2356 return sb.toString(); 2357 } 2358 2359 /** 2360 * Return the additional string to be logged by LogRec, default 2361 * 2362 * @param msg that was processed 2363 * @return information to be logged as a String 2364 */ 2365 protected String getLogRecString(Message msg) { 2366 WifiConfiguration config; 2367 Long now; 2368 String report; 2369 StringBuilder sb = new StringBuilder(); 2370 if (mScreenOn) { 2371 sb.append("!"); 2372 } 2373 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2374 sb.append("(").append(messageHandlingStatus).append(")"); 2375 } 2376 sb.append(smToString(msg)); 2377 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2378 sb.append(" uid=" + msg.sendingUid); 2379 } 2380 switch (msg.what) { 2381 case CMD_START_SCAN: 2382 now = System.currentTimeMillis(); 2383 sb.append(" "); 2384 sb.append(Integer.toString(msg.arg1)); 2385 sb.append(" "); 2386 sb.append(Integer.toString(msg.arg2)); 2387 sb.append(" ic="); 2388 sb.append(Integer.toString(sScanAlarmIntentCount)); 2389 if (msg.obj != null) { 2390 Bundle bundle = (Bundle)msg.obj; 2391 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2392 if (request != 0) { 2393 sb.append(" proc(ms):").append(now - request); 2394 } 2395 } 2396 if (mIsScanOngoing) sb.append(" onGoing"); 2397 if (mIsFullScanOngoing) sb.append(" full"); 2398 if (lastStartScanTimeStamp != 0) { 2399 sb.append(" started:").append(lastStartScanTimeStamp); 2400 sb.append(",").append(now - lastStartScanTimeStamp); 2401 } 2402 if (lastScanDuration != 0) { 2403 sb.append(" dur:").append(lastScanDuration); 2404 } 2405 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2406 sb.append(" f=").append(mWifiInfo.getFrequency()); 2407 sb.append(" sc=").append(mWifiInfo.score); 2408 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2409 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2410 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2411 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2412 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2413 if (lastScanFreqs != null) { 2414 sb.append(" list=").append(lastScanFreqs); 2415 } else { 2416 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2417 } 2418 report = reportOnTime(); 2419 if (report != null) { 2420 sb.append(" ").append(report); 2421 } 2422 break; 2423 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2424 sb.append(" "); 2425 sb.append(Integer.toString(msg.arg1)); 2426 sb.append(" "); 2427 sb.append(Integer.toString(msg.arg2)); 2428 sb.append(printTime()); 2429 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2430 if (stateChangeResult != null) { 2431 sb.append(stateChangeResult.toString()); 2432 } 2433 break; 2434 case WifiManager.SAVE_NETWORK: 2435 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2436 sb.append(" "); 2437 sb.append(Integer.toString(msg.arg1)); 2438 sb.append(" "); 2439 sb.append(Integer.toString(msg.arg2)); 2440 if (lastSavedConfigurationAttempt != null) { 2441 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2442 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2443 if (lastSavedConfigurationAttempt.hiddenSSID) { 2444 sb.append(" hidden"); 2445 } 2446 if (lastSavedConfigurationAttempt.preSharedKey != null 2447 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2448 sb.append(" hasPSK"); 2449 } 2450 if (lastSavedConfigurationAttempt.ephemeral) { 2451 sb.append(" ephemeral"); 2452 } 2453 if (lastSavedConfigurationAttempt.selfAdded) { 2454 sb.append(" selfAdded"); 2455 } 2456 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2457 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2458 } 2459 break; 2460 case WifiManager.FORGET_NETWORK: 2461 sb.append(" "); 2462 sb.append(Integer.toString(msg.arg1)); 2463 sb.append(" "); 2464 sb.append(Integer.toString(msg.arg2)); 2465 if (lastForgetConfigurationAttempt != null) { 2466 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2467 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2468 if (lastForgetConfigurationAttempt.hiddenSSID) { 2469 sb.append(" hidden"); 2470 } 2471 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2472 sb.append(" hasPSK"); 2473 } 2474 if (lastForgetConfigurationAttempt.ephemeral) { 2475 sb.append(" ephemeral"); 2476 } 2477 if (lastForgetConfigurationAttempt.selfAdded) { 2478 sb.append(" selfAdded"); 2479 } 2480 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2481 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2482 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2483 } 2484 break; 2485 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2486 sb.append(" "); 2487 sb.append(Integer.toString(msg.arg1)); 2488 sb.append(" "); 2489 sb.append(Integer.toString(msg.arg2)); 2490 String bssid = (String)msg.obj; 2491 if (bssid != null && bssid.length()>0) { 2492 sb.append(" "); 2493 sb.append(bssid); 2494 } 2495 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2496 sb.append(printTime()); 2497 break; 2498 case WifiMonitor.SCAN_RESULTS_EVENT: 2499 sb.append(" "); 2500 sb.append(Integer.toString(msg.arg1)); 2501 sb.append(" "); 2502 sb.append(Integer.toString(msg.arg2)); 2503 if (mScanResults != null) { 2504 sb.append(" found="); 2505 sb.append(mScanResults.size()); 2506 } 2507 sb.append(" known=").append(mNumScanResultsKnown); 2508 sb.append(" got=").append(mNumScanResultsReturned); 2509 if (lastScanDuration != 0) { 2510 sb.append(" dur:").append(lastScanDuration); 2511 } 2512 if (mOnTime != 0) { 2513 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2514 sb.append(",").append(mOnTime); 2515 } 2516 if (mTxTime != 0) { 2517 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2518 sb.append(",").append(mTxTime); 2519 } 2520 if (mRxTime != 0) { 2521 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2522 sb.append(",").append(mRxTime); 2523 } 2524 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2525 break; 2526 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2527 sb.append(" "); 2528 sb.append(Integer.toString(msg.arg1)); 2529 sb.append(" "); 2530 sb.append(Integer.toString(msg.arg2)); 2531 sb.append(" ").append(mLastBssid); 2532 sb.append(" nid=").append(mLastNetworkId); 2533 config = getCurrentWifiConfiguration(); 2534 if (config != null) { 2535 sb.append(" ").append(config.configKey()); 2536 } 2537 sb.append(printTime()); 2538 break; 2539 case CMD_TARGET_BSSID: 2540 case CMD_ASSOCIATED_BSSID: 2541 sb.append(" "); 2542 sb.append(Integer.toString(msg.arg1)); 2543 sb.append(" "); 2544 sb.append(Integer.toString(msg.arg2)); 2545 if (msg.obj != null) { 2546 sb.append(" BSSID=").append((String)msg.obj); 2547 } 2548 if (mTargetRoamBSSID != null) { 2549 sb.append(" Target=").append(mTargetRoamBSSID); 2550 } 2551 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2552 sb.append(printTime()); 2553 break; 2554 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2555 if (msg.obj != null) { 2556 sb.append(" ").append((String)msg.obj); 2557 } 2558 sb.append(" nid=").append(msg.arg1); 2559 sb.append(" reason=").append(msg.arg2); 2560 if (mLastBssid != null) { 2561 sb.append(" lastbssid=").append(mLastBssid); 2562 } 2563 if (mWifiInfo.getFrequency() != -1) { 2564 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2565 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2566 } 2567 if (linkDebouncing) { 2568 sb.append(" debounce"); 2569 } 2570 sb.append(printTime()); 2571 break; 2572 case WifiMonitor.SSID_TEMP_DISABLED: 2573 case WifiMonitor.SSID_REENABLED: 2574 sb.append(" nid=").append(msg.arg1); 2575 if (msg.obj != null) { 2576 sb.append(" ").append((String)msg.obj); 2577 } 2578 config = getCurrentWifiConfiguration(); 2579 if (config != null) { 2580 sb.append(" cur=").append(config.configKey()); 2581 sb.append(" ajst=").append(config.autoJoinStatus); 2582 if (config.selfAdded) { 2583 sb.append(" selfAdded"); 2584 } 2585 if (config.status != 0) { 2586 sb.append(" st=").append(config.status); 2587 sb.append(" rs=").append(config.disableReason); 2588 } 2589 if (config.lastConnected != 0) { 2590 now = System.currentTimeMillis(); 2591 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2592 } 2593 if (mLastBssid != null) { 2594 sb.append(" lastbssid=").append(mLastBssid); 2595 } 2596 if (mWifiInfo.getFrequency() != -1) { 2597 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2598 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2599 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2600 } 2601 } 2602 sb.append(printTime()); 2603 break; 2604 case CMD_RSSI_POLL: 2605 case CMD_UNWANTED_NETWORK: 2606 case WifiManager.RSSI_PKTCNT_FETCH: 2607 sb.append(" "); 2608 sb.append(Integer.toString(msg.arg1)); 2609 sb.append(" "); 2610 sb.append(Integer.toString(msg.arg2)); 2611 if (mWifiInfo.getSSID() != null) 2612 if (mWifiInfo.getSSID() != null) 2613 sb.append(" ").append(mWifiInfo.getSSID()); 2614 if (mWifiInfo.getBSSID() != null) 2615 sb.append(" ").append(mWifiInfo.getBSSID()); 2616 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2617 sb.append(" f=").append(mWifiInfo.getFrequency()); 2618 sb.append(" sc=").append(mWifiInfo.score); 2619 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2620 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2621 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2622 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2623 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2624 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2625 report = reportOnTime(); 2626 if (report != null) { 2627 sb.append(" ").append(report); 2628 } 2629 if (wifiScoringReport != null) { 2630 sb.append(wifiScoringReport); 2631 } 2632 break; 2633 case CMD_AUTO_CONNECT: 2634 case WifiManager.CONNECT_NETWORK: 2635 sb.append(" "); 2636 sb.append(Integer.toString(msg.arg1)); 2637 sb.append(" "); 2638 sb.append(Integer.toString(msg.arg2)); 2639 config = (WifiConfiguration) msg.obj; 2640 if (config != null) { 2641 sb.append(" ").append(config.configKey()); 2642 if (config.visibility != null) { 2643 sb.append(" [").append(config.visibility.num24); 2644 sb.append(" ,").append(config.visibility.rssi24); 2645 sb.append(" ;").append(config.visibility.num5); 2646 sb.append(" ,").append(config.visibility.rssi5).append("]"); 2647 } 2648 } 2649 if (mTargetRoamBSSID != null) { 2650 sb.append(" ").append(mTargetRoamBSSID); 2651 } 2652 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2653 sb.append(printTime()); 2654 config = getCurrentWifiConfiguration(); 2655 if (config != null) { 2656 sb.append(" ").append(config.configKey()); 2657 if (config.visibility != null) { 2658 sb.append(" [").append(config.visibility.num24); 2659 sb.append(" ,").append(config.visibility.rssi24); 2660 sb.append(" ;").append(config.visibility.num5); 2661 sb.append(" ,").append(config.visibility.rssi5).append("]"); 2662 } 2663 } 2664 break; 2665 case CMD_AUTO_ROAM: 2666 sb.append(" "); 2667 sb.append(Integer.toString(msg.arg1)); 2668 sb.append(" "); 2669 sb.append(Integer.toString(msg.arg2)); 2670 ScanResult result = (ScanResult)msg.obj; 2671 if (result != null) { 2672 now = System.currentTimeMillis(); 2673 sb.append(" bssid=").append(result.BSSID); 2674 sb.append(" rssi=").append(result.level); 2675 sb.append(" freq=").append(result.frequency); 2676 if (result.seen > 0 && result.seen < now) { 2677 sb.append(" seen=").append(now - result.seen); 2678 } else { 2679 // Somehow the timestamp for this scan result is inconsistent 2680 sb.append(" !seen=").append(result.seen); 2681 } 2682 } 2683 if (mTargetRoamBSSID != null) { 2684 sb.append(" ").append(mTargetRoamBSSID); 2685 } 2686 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2687 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 2688 sb.append(printTime()); 2689 break; 2690 case CMD_ADD_OR_UPDATE_NETWORK: 2691 sb.append(" "); 2692 sb.append(Integer.toString(msg.arg1)); 2693 sb.append(" "); 2694 sb.append(Integer.toString(msg.arg2)); 2695 if (msg.obj != null) { 2696 config = (WifiConfiguration)msg.obj; 2697 sb.append(" ").append(config.configKey()); 2698 sb.append(" prio=").append(config.priority); 2699 sb.append(" status=").append(config.status); 2700 if (config.BSSID != null) { 2701 sb.append(" ").append(config.BSSID); 2702 } 2703 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 2704 if (curConfig != null) { 2705 if (curConfig.configKey().equals(config.configKey())) { 2706 sb.append(" is current"); 2707 } else { 2708 sb.append(" current=").append(curConfig.configKey()); 2709 sb.append(" prio=").append(curConfig.priority); 2710 sb.append(" status=").append(curConfig.status); 2711 } 2712 } 2713 } 2714 break; 2715 case WifiManager.DISABLE_NETWORK: 2716 case CMD_ENABLE_NETWORK: 2717 sb.append(" "); 2718 sb.append(Integer.toString(msg.arg1)); 2719 sb.append(" "); 2720 sb.append(Integer.toString(msg.arg2)); 2721 String key = mWifiConfigStore.getLastSelectedConfiguration(); 2722 if (key != null) { 2723 sb.append(" last=").append(key); 2724 } 2725 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 2726 if (config != null && (key == null || !config.configKey().equals(key))) { 2727 sb.append(" target=").append(key); 2728 } 2729 break; 2730 case CMD_GET_CONFIGURED_NETWORKS: 2731 sb.append(" "); 2732 sb.append(Integer.toString(msg.arg1)); 2733 sb.append(" "); 2734 sb.append(Integer.toString(msg.arg2)); 2735 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 2736 break; 2737 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 2738 sb.append(" "); 2739 sb.append(Integer.toString(msg.arg1)); 2740 sb.append(" "); 2741 sb.append(Integer.toString(msg.arg2)); 2742 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2743 sb.append(",").append(mWifiInfo.txBad); 2744 sb.append(",").append(mWifiInfo.txRetries); 2745 break; 2746 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 2747 sb.append(" "); 2748 sb.append(Integer.toString(msg.arg1)); 2749 sb.append(" "); 2750 sb.append(Integer.toString(msg.arg2)); 2751 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 2752 sb.append(" OK "); 2753 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 2754 sb.append(" FAIL "); 2755 } 2756 if (mLinkProperties != null) { 2757 if (mLinkProperties.hasIPv4Address()) { 2758 sb.append(" v4"); 2759 } 2760 if (mLinkProperties.hasGlobalIPv6Address()) { 2761 sb.append(" v6"); 2762 } 2763 if (mLinkProperties.hasIPv4DefaultRoute()) { 2764 sb.append(" v4r"); 2765 } 2766 if (mLinkProperties.hasIPv6DefaultRoute()) { 2767 sb.append(" v6r"); 2768 } 2769 if (mLinkProperties.hasIPv4DnsServer()) { 2770 sb.append(" v4dns"); 2771 } 2772 if (mLinkProperties.hasIPv6DnsServer()) { 2773 sb.append(" v6dns"); 2774 } 2775 } 2776 break; 2777 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 2778 sb.append(" "); 2779 sb.append(Integer.toString(msg.arg1)); 2780 sb.append(" "); 2781 sb.append(Integer.toString(msg.arg2)); 2782 if (msg.obj != null) { 2783 NetworkInfo info = (NetworkInfo)msg.obj; 2784 NetworkInfo.State state = info.getState(); 2785 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 2786 if (state != null) { 2787 sb.append(" st=").append(state); 2788 } 2789 if (detailedState != null) { 2790 sb.append("/").append(detailedState); 2791 } 2792 } 2793 break; 2794 case CMD_IP_CONFIGURATION_LOST: 2795 int count = -1; 2796 WifiConfiguration c = getCurrentWifiConfiguration(); 2797 if (c != null) count = c.numIpConfigFailures; 2798 sb.append(" "); 2799 sb.append(Integer.toString(msg.arg1)); 2800 sb.append(" "); 2801 sb.append(Integer.toString(msg.arg2)); 2802 sb.append(" failures: "); 2803 sb.append(Integer.toString(count)); 2804 sb.append("/"); 2805 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 2806 if (mWifiInfo.getBSSID() != null) { 2807 sb.append(" ").append(mWifiInfo.getBSSID()); 2808 } 2809 if (c != null) { 2810 if (c.scanResultCache != null) { 2811 for (ScanResult r : c.scanResultCache.values()) { 2812 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 2813 sb.append(" ipfail=").append(r.numIpConfigFailures); 2814 sb.append(",st=").append(r.autoJoinStatus); 2815 } 2816 } 2817 } 2818 sb.append(" -> ajst=").append(c.autoJoinStatus); 2819 sb.append(" ").append(c.disableReason); 2820 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2821 sb.append(",").append(mWifiInfo.txBad); 2822 sb.append(",").append(mWifiInfo.txRetries); 2823 } 2824 sb.append(printTime()); 2825 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2826 break; 2827 case CMD_UPDATE_LINKPROPERTIES: 2828 sb.append(" "); 2829 sb.append(Integer.toString(msg.arg1)); 2830 sb.append(" "); 2831 sb.append(Integer.toString(msg.arg2)); 2832 if (mLinkProperties != null) { 2833 if (mLinkProperties.hasIPv4Address()) { 2834 sb.append(" v4"); 2835 } 2836 if (mLinkProperties.hasGlobalIPv6Address()) { 2837 sb.append(" v6"); 2838 } 2839 if (mLinkProperties.hasIPv4DefaultRoute()) { 2840 sb.append(" v4r"); 2841 } 2842 if (mLinkProperties.hasIPv6DefaultRoute()) { 2843 sb.append(" v6r"); 2844 } 2845 if (mLinkProperties.hasIPv4DnsServer()) { 2846 sb.append(" v4dns"); 2847 } 2848 if (mLinkProperties.hasIPv6DnsServer()) { 2849 sb.append(" v6dns"); 2850 } 2851 } 2852 break; 2853 case CMD_SET_COUNTRY_CODE: 2854 sb.append(" "); 2855 sb.append(Integer.toString(msg.arg1)); 2856 sb.append(" "); 2857 sb.append(Integer.toString(msg.arg2)); 2858 if (msg.obj != null) { 2859 sb.append(" ").append((String)msg.obj); 2860 } 2861 break; 2862 case CMD_ROAM_WATCHDOG_TIMER: 2863 sb.append(" "); 2864 sb.append(Integer.toString(msg.arg1)); 2865 sb.append(" "); 2866 sb.append(Integer.toString(msg.arg2)); 2867 sb.append(" cur=").append(roamWatchdogCount); 2868 break; 2869 case CMD_DISCONNECTING_WATCHDOG_TIMER: 2870 sb.append(" "); 2871 sb.append(Integer.toString(msg.arg1)); 2872 sb.append(" "); 2873 sb.append(Integer.toString(msg.arg2)); 2874 sb.append(" cur=").append(disconnectingWatchdogCount); 2875 break; 2876 default: 2877 sb.append(" "); 2878 sb.append(Integer.toString(msg.arg1)); 2879 sb.append(" "); 2880 sb.append(Integer.toString(msg.arg2)); 2881 break; 2882 } 2883 2884 return sb.toString(); 2885 } 2886 2887 private void handleScreenStateChanged(boolean screenOn, boolean startBackgroundScanIfNeeded) { 2888 mScreenOn = screenOn; 2889 if (PDBG) { 2890 loge(" handleScreenStateChanged Enter: screenOn=" + screenOn 2891 + " mCurrentScanAlarmMs = " + Long.toString(mCurrentScanAlarmMs) 2892 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 2893 + " state " + getCurrentState().getName() 2894 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 2895 } 2896 enableRssiPolling(screenOn); 2897 if (screenOn) enableAllNetworks(); 2898 if (mUserWantsSuspendOpt.get()) { 2899 if (screenOn) { 2900 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 2901 } else { 2902 // Allow 2s for suspend optimizations to be set 2903 mSuspendWakeLock.acquire(2000); 2904 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 2905 } 2906 } 2907 mScreenBroadcastReceived.set(true); 2908 2909 getWifiLinkLayerStats(false); 2910 mOnTimeScreenStateChange = mOnTime; 2911 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 2912 2913 if (screenOn) { 2914 clearBlacklist(); 2915 2916 fullBandConnectedTimeIntervalMilli = mWifiConfigStore.associatedPartialScanPeriodMilli; 2917 // Start the scan alarm so as to enable autojoin 2918 if (getCurrentState() == mConnectedState 2919 && mWifiConfigStore.enableAutoJoinScanWhenAssociated) { 2920 mCurrentScanAlarmMs = mWifiConfigStore.associatedPartialScanPeriodMilli; 2921 // Scan after 200ms 2922 setScanAlarm(true, 200); 2923 } else if (getCurrentState() == mDisconnectedState) { 2924 mCurrentScanAlarmMs = mDisconnectedScanPeriodMs; 2925 // Scan after 200ms 2926 setScanAlarm(true, 200); 2927 } 2928 } else { 2929 setScanAlarm(false, 0); 2930 } 2931 2932 if (mBackgroundScanSupported) { 2933 mEnableBackgroundScan = (screenOn == false); 2934 } 2935 2936 if (DBG) logd("backgroundScan enabled=" + mEnableBackgroundScan 2937 + " startBackgroundScanIfNeeded:" + startBackgroundScanIfNeeded); 2938 2939 if (startBackgroundScanIfNeeded) { 2940 mWifiNative.enableBackgroundScan(mEnableBackgroundScan); 2941 } 2942 2943 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 2944 } 2945 2946 private void checkAndSetConnectivityInstance() { 2947 if (mCm == null) { 2948 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 2949 } 2950 } 2951 2952 private boolean startTethering(ArrayList<String> available) { 2953 2954 boolean wifiAvailable = false; 2955 2956 checkAndSetConnectivityInstance(); 2957 2958 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 2959 2960 for (String intf : available) { 2961 for (String regex : wifiRegexs) { 2962 if (intf.matches(regex)) { 2963 2964 InterfaceConfiguration ifcg = null; 2965 try { 2966 ifcg = mNwService.getInterfaceConfig(intf); 2967 if (ifcg != null) { 2968 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 2969 ifcg.setLinkAddress(new LinkAddress( 2970 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 2971 ifcg.setInterfaceUp(); 2972 2973 mNwService.setInterfaceConfig(intf, ifcg); 2974 } 2975 } catch (Exception e) { 2976 loge("Error configuring interface " + intf + ", :" + e); 2977 return false; 2978 } 2979 2980 if(mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 2981 loge("Error tethering on " + intf); 2982 return false; 2983 } 2984 mTetherInterfaceName = intf; 2985 return true; 2986 } 2987 } 2988 } 2989 // We found no interfaces to tether 2990 return false; 2991 } 2992 2993 private void stopTethering() { 2994 2995 checkAndSetConnectivityInstance(); 2996 2997 /* Clear the interface config to allow dhcp correctly configure new 2998 ip settings */ 2999 InterfaceConfiguration ifcg = null; 3000 try { 3001 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3002 if (ifcg != null) { 3003 ifcg.setLinkAddress( 3004 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3005 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3006 } 3007 } catch (Exception e) { 3008 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3009 } 3010 3011 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3012 loge("Untether initiate failed!"); 3013 } 3014 } 3015 3016 private boolean isWifiTethered(ArrayList<String> active) { 3017 3018 checkAndSetConnectivityInstance(); 3019 3020 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3021 for (String intf : active) { 3022 for (String regex : wifiRegexs) { 3023 if (intf.matches(regex)) { 3024 return true; 3025 } 3026 } 3027 } 3028 // We found no interfaces that are tethered 3029 return false; 3030 } 3031 3032 /** 3033 * Set the country code from the system setting value, if any. 3034 */ 3035 private void setCountryCode() { 3036 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 3037 Settings.Global.WIFI_COUNTRY_CODE); 3038 if (countryCode != null && !countryCode.isEmpty()) { 3039 setCountryCode(countryCode, false); 3040 } else { 3041 //use driver default 3042 } 3043 } 3044 3045 /** 3046 * Set the frequency band from the system setting value, if any. 3047 */ 3048 private void setFrequencyBand() { 3049 int band = Settings.Global.getInt(mContext.getContentResolver(), 3050 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3051 setFrequencyBand(band, false); 3052 } 3053 3054 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3055 if (DBG) { 3056 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3057 + " -want " + mUserWantsSuspendOpt.get() 3058 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3059 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 3060 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 3061 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 3062 } 3063 //mWifiNative.setSuspendOptimizations(enabled); 3064 3065 if (enabled) { 3066 mSuspendOptNeedsDisabled &= ~reason; 3067 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3068 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3069 if (DBG) { 3070 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3071 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3072 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 3073 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 3074 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 3075 } 3076 mWifiNative.setSuspendOptimizations(true); 3077 } 3078 } else { 3079 mSuspendOptNeedsDisabled |= reason; 3080 mWifiNative.setSuspendOptimizations(false); 3081 } 3082 } 3083 3084 private void setSuspendOptimizations(int reason, boolean enabled) { 3085 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3086 if (enabled) { 3087 mSuspendOptNeedsDisabled &= ~reason; 3088 } else { 3089 mSuspendOptNeedsDisabled |= reason; 3090 } 3091 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3092 } 3093 3094 private void setWifiState(int wifiState) { 3095 final int previousWifiState = mWifiState.get(); 3096 3097 try { 3098 if (wifiState == WIFI_STATE_ENABLED) { 3099 mBatteryStats.noteWifiOn(); 3100 } else if (wifiState == WIFI_STATE_DISABLED) { 3101 mBatteryStats.noteWifiOff(); 3102 } 3103 } catch (RemoteException e) { 3104 loge("Failed to note battery stats in wifi"); 3105 } 3106 3107 mWifiState.set(wifiState); 3108 3109 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3110 3111 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3112 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3113 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3114 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3115 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3116 } 3117 3118 private void setWifiApState(int wifiApState) { 3119 final int previousWifiApState = mWifiApState.get(); 3120 3121 try { 3122 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3123 mBatteryStats.noteWifiOn(); 3124 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3125 mBatteryStats.noteWifiOff(); 3126 } 3127 } catch (RemoteException e) { 3128 loge("Failed to note battery stats in wifi"); 3129 } 3130 3131 // Update state 3132 mWifiApState.set(wifiApState); 3133 3134 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3135 3136 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3137 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3138 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3139 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3140 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3141 } 3142 3143 /* 3144 void ageOutScanResults(int age) { 3145 synchronized(mScanResultCache) { 3146 // Trim mScanResults, which prevent WifiStateMachine to return 3147 // obsolete scan results to queriers 3148 long now = System.CurrentTimeMillis(); 3149 for (int i = 0; i < mScanResults.size(); i++) { 3150 ScanResult result = mScanResults.get(i); 3151 if ((result.seen > now || (now - result.seen) > age)) { 3152 mScanResults.remove(i); 3153 } 3154 } 3155 } 3156 }*/ 3157 3158 private static final String ID_STR = "id="; 3159 private static final String BSSID_STR = "bssid="; 3160 private static final String FREQ_STR = "freq="; 3161 private static final String LEVEL_STR = "level="; 3162 private static final String TSF_STR = "tsf="; 3163 private static final String FLAGS_STR = "flags="; 3164 private static final String SSID_STR = "ssid="; 3165 private static final String DELIMITER_STR = "===="; 3166 private static final String END_STR = "####"; 3167 3168 int emptyScanResultCount = 0; 3169 3170 /** 3171 * Format: 3172 * 3173 * id=1 3174 * bssid=68:7f:76:d7:1a:6e 3175 * freq=2412 3176 * level=-44 3177 * tsf=1344626243700342 3178 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3179 * ssid=zfdy 3180 * ==== 3181 * id=2 3182 * bssid=68:5f:74:d7:1a:6f 3183 * freq=5180 3184 * level=-73 3185 * tsf=1344626243700373 3186 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3187 * ssid=zuby 3188 * ==== 3189 */ 3190 private void setScanResults() { 3191 mNumScanResultsKnown = 0; 3192 mNumScanResultsReturned = 0; 3193 String bssid = ""; 3194 int level = 0; 3195 int freq = 0; 3196 long tsf = 0; 3197 String flags = ""; 3198 WifiSsid wifiSsid = null; 3199 String scanResults; 3200 String tmpResults; 3201 StringBuffer scanResultsBuf = new StringBuffer(); 3202 int sid = 0; 3203 3204 while (true) { 3205 tmpResults = mWifiNative.scanResults(sid); 3206 if (TextUtils.isEmpty(tmpResults)) break; 3207 scanResultsBuf.append(tmpResults); 3208 scanResultsBuf.append("\n"); 3209 String[] lines = tmpResults.split("\n"); 3210 sid = -1; 3211 for (int i=lines.length - 1; i >= 0; i--) { 3212 if (lines[i].startsWith(END_STR)) { 3213 break; 3214 } else if (lines[i].startsWith(ID_STR)) { 3215 try { 3216 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3217 } catch (NumberFormatException e) { 3218 // Nothing to do 3219 } 3220 break; 3221 } 3222 } 3223 if (sid == -1) break; 3224 } 3225 3226 // Age out scan results, we return all scan results found in the last 12 seconds, 3227 // and NOT all scan results since last scan. 3228 // ageOutScanResults(12000); 3229 3230 scanResults = scanResultsBuf.toString(); 3231 if (TextUtils.isEmpty(scanResults)) { 3232 emptyScanResultCount++; 3233 if (emptyScanResultCount > 10) { 3234 // If we got too many empty scan results, the current scan cache is stale, 3235 // hence clear it. 3236 mScanResults = new ArrayList<ScanResult>(); 3237 } 3238 return; 3239 } 3240 3241 emptyScanResultCount = 0; 3242 3243 // note that all these splits and substrings keep references to the original 3244 // huge string buffer while the amount we really want is generally pretty small 3245 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3246 synchronized(mScanResultCache) { 3247 mScanResults = new ArrayList<ScanResult>(); 3248 String[] lines = scanResults.split("\n"); 3249 final int bssidStrLen = BSSID_STR.length(); 3250 final int flagLen = FLAGS_STR.length(); 3251 3252 for (String line : lines) { 3253 if (line.startsWith(BSSID_STR)) { 3254 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3255 } else if (line.startsWith(FREQ_STR)) { 3256 try { 3257 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3258 } catch (NumberFormatException e) { 3259 freq = 0; 3260 } 3261 } else if (line.startsWith(LEVEL_STR)) { 3262 try { 3263 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3264 /* some implementations avoid negative values by adding 256 3265 * so we need to adjust for that here. 3266 */ 3267 if (level > 0) level -= 256; 3268 } catch(NumberFormatException e) { 3269 level = 0; 3270 } 3271 } else if (line.startsWith(TSF_STR)) { 3272 try { 3273 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3274 } catch (NumberFormatException e) { 3275 tsf = 0; 3276 } 3277 } else if (line.startsWith(FLAGS_STR)) { 3278 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3279 } else if (line.startsWith(SSID_STR)) { 3280 wifiSsid = WifiSsid.createFromAsciiEncoded( 3281 line.substring(SSID_STR.length())); 3282 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3283 if (bssid != null) { 3284 String ssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3285 String key = bssid + ssid; 3286 ScanResult scanResult = mScanResultCache.get(key); 3287 if (scanResult != null) { 3288 // TODO: average the RSSI, instead of overwriting it 3289 scanResult.level = level; 3290 scanResult.wifiSsid = wifiSsid; 3291 // Keep existing API 3292 scanResult.SSID = (wifiSsid != null) ? wifiSsid.toString() : 3293 WifiSsid.NONE; 3294 scanResult.capabilities = flags; 3295 scanResult.frequency = freq; 3296 scanResult.timestamp = tsf; 3297 scanResult.seen = System.currentTimeMillis(); 3298 } else { 3299 scanResult = 3300 new ScanResult( 3301 wifiSsid, bssid, flags, level, freq, tsf); 3302 scanResult.seen = System.currentTimeMillis(); 3303 mScanResultCache.put(key, scanResult); 3304 } 3305 mNumScanResultsReturned ++; // Keep track of how many scan results we got 3306 // as part of this scan's processing 3307 mScanResults.add(scanResult); 3308 } 3309 bssid = null; 3310 level = 0; 3311 freq = 0; 3312 tsf = 0; 3313 flags = ""; 3314 wifiSsid = null; 3315 } 3316 } 3317 } 3318 boolean attemptAutoJoin = true; 3319 SupplicantState state = mWifiInfo.getSupplicantState(); 3320 if (getCurrentState() == mRoamingState 3321 || getCurrentState() == mObtainingIpState 3322 || getCurrentState() == mScanModeState 3323 || getCurrentState() == mDisconnectingState 3324 || (getCurrentState() == mConnectedState 3325 && !mWifiConfigStore.enableAutoJoinWhenAssociated) 3326 || linkDebouncing 3327 || state == SupplicantState.ASSOCIATING 3328 || state == SupplicantState.AUTHENTICATING 3329 || state == SupplicantState.FOUR_WAY_HANDSHAKE 3330 || state == SupplicantState.GROUP_HANDSHAKE 3331 || mConnectionRequests == 0) { 3332 // Dont attempt auto-joining again while we are already attempting to join 3333 // and/or obtaining Ip address 3334 attemptAutoJoin = false; 3335 } 3336 if (DBG) { 3337 loge("wifi setScanResults state" + getCurrentState() 3338 + " sup_state=" + state 3339 + " debouncing=" + linkDebouncing); 3340 } 3341 if (attemptAutoJoin) { 3342 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 3343 } 3344 // Loose last selected configuration if we have been disconnected for 30 minutes 3345 if (getDisconnectedTimeMilli() > 1000 * 60 * 30) { 3346 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 3347 } 3348 3349 if (mWifiConfigStore.enableAutoJoinWhenAssociated) { 3350 synchronized(mScanResultCache) { 3351 // AutoJoincontroller will directly acces the scan result list and update it with 3352 // ScanResult status 3353 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 3354 } 3355 } 3356 if (linkDebouncing) { 3357 // If debouncing, we dont re-select a SSID or BSSID hence 3358 // there is no need to call the network selection code 3359 // in WifiAutoJoinController, instead, 3360 // just try to reconnect to the same SSID by triggering a roam 3361 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3362 } 3363 } 3364 3365 /* 3366 * Fetch RSSI, linkspeed, and frequency on current connection 3367 */ 3368 private void fetchRssiLinkSpeedAndFrequencyNative() { 3369 int newRssi = -1; 3370 int newLinkSpeed = -1; 3371 int newFrequency = -1; 3372 3373 String signalPoll = mWifiNative.signalPoll(); 3374 3375 if (signalPoll != null) { 3376 String[] lines = signalPoll.split("\n"); 3377 for (String line : lines) { 3378 String[] prop = line.split("="); 3379 if (prop.length < 2) continue; 3380 try { 3381 if (prop[0].equals("RSSI")) { 3382 newRssi = Integer.parseInt(prop[1]); 3383 } else if (prop[0].equals("LINKSPEED")) { 3384 newLinkSpeed = Integer.parseInt(prop[1]); 3385 } else if (prop[0].equals("FREQUENCY")) { 3386 newFrequency = Integer.parseInt(prop[1]); 3387 } 3388 } catch (NumberFormatException e) { 3389 //Ignore, defaults on rssi and linkspeed are assigned 3390 } 3391 } 3392 } 3393 3394 if (PDBG) { 3395 loge("fetchRssiLinkSpeedAndFrequencyNative rssi=" 3396 + Integer.toString(newRssi) + " linkspeed=" 3397 + Integer.toString(newLinkSpeed)); 3398 } 3399 3400 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 3401 // screen out invalid values 3402 /* some implementations avoid negative values by adding 256 3403 * so we need to adjust for that here. 3404 */ 3405 if (newRssi > 0) newRssi -= 256; 3406 mWifiInfo.setRssi(newRssi); 3407 /* 3408 * Rather then sending the raw RSSI out every time it 3409 * changes, we precalculate the signal level that would 3410 * be displayed in the status bar, and only send the 3411 * broadcast if that much more coarse-grained number 3412 * changes. This cuts down greatly on the number of 3413 * broadcasts, at the cost of not informing others 3414 * interested in RSSI of all the changes in signal 3415 * level. 3416 */ 3417 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 3418 if (newSignalLevel != mLastSignalLevel) { 3419 sendRssiChangeBroadcast(newRssi); 3420 } 3421 mLastSignalLevel = newSignalLevel; 3422 } else { 3423 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 3424 } 3425 3426 if (newLinkSpeed != -1) { 3427 mWifiInfo.setLinkSpeed(newLinkSpeed); 3428 } 3429 if (newFrequency > 0) { 3430 if (ScanResult.is5GHz(newFrequency)) { 3431 mWifiConnectionStatistics.num5GhzConnected++; 3432 } 3433 if (ScanResult.is24GHz(newFrequency)) { 3434 mWifiConnectionStatistics.num24GhzConnected++; 3435 } 3436 mWifiInfo.setFrequency(newFrequency); 3437 } 3438 mWifiConfigStore.updateConfiguration(mWifiInfo); 3439 } 3440 3441 /** 3442 * Determine if we need to switch network: 3443 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 3444 * - match the uregncy of the switch versus the packet usage at the interface 3445 */ 3446 boolean shouldSwitchNetwork(int networkDelta) { 3447 int delta; 3448 if (networkDelta <= 0) { 3449 return false; 3450 } 3451 delta = networkDelta; 3452 if (mWifiInfo != null) { 3453 if (!mWifiConfigStore.enableAutoJoinWhenAssociated 3454 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 3455 // If AutoJoin while associated is not enabled, 3456 // we should never switch network when already associated 3457 delta = -1000; 3458 } else { 3459 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 3460 // TODO: at the interface. We should also discriminate between ucast and mcast, 3461 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 3462 // TODO: broadcasts 3463 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 3464 delta -= 999; 3465 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 3466 delta -= 6; 3467 } 3468 loge("WifiStateMachine shouldSwitchNetwork " 3469 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3470 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3471 + " delta " + networkDelta + " -> " + delta); 3472 } 3473 } else { 3474 loge("WifiStateMachine shouldSwitchNetwork " 3475 + " delta " + networkDelta + " -> " + delta); 3476 } 3477 if (delta > 0) { 3478 return true; 3479 } 3480 return false; 3481 } 3482 3483 // Polling has completed, hence we wont have a score anymore 3484 private void cleanWifiScore() { 3485 mWifiInfo.txBadRate = 0; 3486 mWifiInfo.txSuccessRate = 0; 3487 mWifiInfo.txRetriesRate = 0; 3488 mWifiInfo.rxSuccessRate = 0; 3489 } 3490 3491 int mBadLinkspeedcount = 0; 3492 3493 // For debug, provide information about the last scoring operation 3494 String wifiScoringReport = null; 3495 private void calculateWifiScore(WifiLinkLayerStats stats) { 3496 StringBuilder sb = new StringBuilder(); 3497 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 3498 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 3499 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 3500 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 3501 } else { 3502 sb.append(" stats"); 3503 mWifiInfo.updatePacketRates(stats); 3504 } 3505 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 3506 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 3507 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 3508 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3509 < mWifiConfigStore.badLinkSpeed5); 3510 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 3511 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 3512 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3513 >= mWifiConfigStore.goodLinkSpeed5); 3514 3515 if (isBadLinkspeed) { 3516 if (mBadLinkspeedcount < 6) 3517 mBadLinkspeedcount++; 3518 } else { 3519 if (mBadLinkspeedcount > 0) 3520 mBadLinkspeedcount--; 3521 } 3522 3523 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 3524 if (isGoodLinkspeed) sb.append(" gl"); 3525 3526 /** 3527 * We want to make sure that we use the 24GHz RSSI thresholds if 3528 * there are 2.4GHz scan results 3529 * otherwise we end up lowering the score based on 5GHz values 3530 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 3531 * We also might unblacklist the configuation based on 2.4GHz 3532 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 3533 */ 3534 boolean use24Thresholds = false; 3535 boolean homeNetworkBoost = false; 3536 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 3537 if (currentConfiguration != null 3538 && currentConfiguration.scanResultCache != null) { 3539 currentConfiguration.setVisibility(12000); 3540 if (currentConfiguration.visibility != null) { 3541 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 3542 && currentConfiguration.visibility.rssi24 3543 >= (currentConfiguration.visibility.rssi5-2)) { 3544 use24Thresholds = true; 3545 } 3546 } 3547 if (currentConfiguration.scanResultCache.size() <= 6 3548 && currentConfiguration.allowedKeyManagement.cardinality() == 1 3549 && currentConfiguration.allowedKeyManagement. 3550 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 3551 // A PSK network with less than 6 known BSSIDs 3552 // This is most likely a home network and thus we want to stick to wifi more 3553 homeNetworkBoost = true; 3554 } 3555 } 3556 if (homeNetworkBoost) sb.append(" hn"); 3557 if (use24Thresholds) sb.append(" u24"); 3558 3559 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 3560 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 3561 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 3562 3563 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 3564 3565 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24) 3566 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5); 3567 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24) 3568 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5); 3569 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24) 3570 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5); 3571 3572 if (isBadRSSI) sb.append(" br"); 3573 if (isLowRSSI) sb.append(" lr"); 3574 if (isHighRSSI) sb.append(" hr"); 3575 3576 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 3577 if (currentConfiguration!= null && 3578 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 3579 if (isBadRSSI) { 3580 currentConfiguration.numTicksAtBadRSSI++; 3581 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 3582 // We remained associated for a compound amount of time while passing 3583 // traffic, hence loose the corresponding user triggered disabled stats 3584 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 3585 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 3586 } 3587 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3588 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3589 } 3590 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3591 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3592 } 3593 currentConfiguration.numTicksAtBadRSSI = 0; 3594 } 3595 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3596 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 3597 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3598 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3599 score = score -5; 3600 penalizedDueToUserTriggeredDisconnect = 1; 3601 sb.append(" p1"); 3602 } 3603 } else if (isLowRSSI) { 3604 currentConfiguration.numTicksAtLowRSSI++; 3605 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 3606 // We remained associated for a compound amount of time while passing 3607 // traffic, hence loose the corresponding user triggered disabled stats 3608 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3609 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3610 } 3611 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3612 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3613 } 3614 currentConfiguration.numTicksAtLowRSSI = 0; 3615 } 3616 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3617 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3618 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3619 score = score -5; 3620 penalizedDueToUserTriggeredDisconnect = 2; 3621 sb.append(" p2"); 3622 } 3623 } else if (!isHighRSSI) { 3624 currentConfiguration.numTicksAtNotHighRSSI++; 3625 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 3626 // We remained associated for a compound amount of time while passing 3627 // traffic, hence loose the corresponding user triggered disabled stats 3628 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3629 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3630 } 3631 currentConfiguration.numTicksAtNotHighRSSI = 0; 3632 } 3633 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3634 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3635 score = score -5; 3636 penalizedDueToUserTriggeredDisconnect = 3; 3637 sb.append(" p3"); 3638 } 3639 } 3640 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 3641 currentConfiguration.numTicksAtLowRSSI, 3642 currentConfiguration.numTicksAtNotHighRSSI)); 3643 } 3644 3645 if (PDBG) { 3646 String rssiStatus = ""; 3647 if (isBadRSSI) rssiStatus += " badRSSI "; 3648 else if (isHighRSSI) rssiStatus += " highRSSI "; 3649 else if (isLowRSSI) rssiStatus += " lowRSSI "; 3650 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 3651 loge("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 3652 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 3653 + " score=" + Integer.toString(mWifiInfo.score) 3654 + rssiStatus 3655 + " -> txbadrate=" + String.format( "%.2f", mWifiInfo.txBadRate ) 3656 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3657 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 3658 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3659 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 3660 } 3661 3662 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 3663 && (isBadRSSI || isLowRSSI)) { 3664 // Link is stuck 3665 if (mWifiInfo.linkStuckCount < 5) 3666 mWifiInfo.linkStuckCount += 1; 3667 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 3668 if (PDBG) loge(" bad link -> stuck count =" 3669 + Integer.toString(mWifiInfo.linkStuckCount)); 3670 } else if (mWifiInfo.txSuccessRate > 2 || mWifiInfo.txBadRate < 0.1) { 3671 if (mWifiInfo.linkStuckCount > 0) 3672 mWifiInfo.linkStuckCount -= 1; 3673 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 3674 if (PDBG) loge(" good link -> stuck count =" 3675 + Integer.toString(mWifiInfo.linkStuckCount)); 3676 } 3677 3678 sb.append(String.format(" [%d", score)); 3679 3680 if (mWifiInfo.linkStuckCount > 1) { 3681 // Once link gets stuck for more than 3 seconds, start reducing the score 3682 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 3683 } 3684 sb.append(String.format(",%d", score)); 3685 3686 if (isBadLinkspeed) { 3687 score -= 4 ; 3688 if (PDBG) { 3689 loge(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 3690 + " score=" + Integer.toString(score)); 3691 } 3692 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 3693 score += 4; // So as bad rssi alone dont kill us 3694 } 3695 sb.append(String.format(",%d", score)); 3696 3697 if (isBadRSSI) { 3698 if (mWifiInfo.badRssiCount < 7) 3699 mWifiInfo.badRssiCount += 1; 3700 } else if (isLowRSSI) { 3701 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 3702 if (mWifiInfo.badRssiCount > 0) { 3703 // Decrement bad Rssi count 3704 mWifiInfo.badRssiCount -= 1; 3705 } 3706 } else { 3707 mWifiInfo.badRssiCount = 0; 3708 mWifiInfo.lowRssiCount = 0; 3709 } 3710 3711 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount ; 3712 sb.append(String.format(",%d", score)); 3713 3714 if (PDBG) loge(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 3715 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 3716 + " --> score " + Integer.toString(score)); 3717 3718 3719 if (isHighRSSI) { 3720 score += 5; 3721 if (PDBG) loge(" isHighRSSI ---> score=" + Integer.toString(score)); 3722 } 3723 sb.append(String.format(",%d]", score)); 3724 3725 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 3726 3727 //sanitize boundaries 3728 if (score > NetworkAgent.WIFI_BASE_SCORE) 3729 score = NetworkAgent.WIFI_BASE_SCORE; 3730 if (score < 0) 3731 score = 0; 3732 3733 //report score 3734 if (score != mWifiInfo.score) { 3735 if (DBG) { 3736 loge("calculateWifiScore() report new score " + Integer.toString(score)); 3737 } 3738 mWifiInfo.score = score; 3739 if (mNetworkAgent != null) { 3740 mNetworkAgent.sendNetworkScore(score); 3741 } 3742 } 3743 wifiScoringReport = sb.toString(); 3744 } 3745 3746 public double getTxPacketRate() { 3747 if (mWifiInfo != null) { 3748 return mWifiInfo.txSuccessRate; 3749 } 3750 return -1; 3751 } 3752 3753 public double getRxPacketRate() { 3754 if (mWifiInfo != null) { 3755 return mWifiInfo.rxSuccessRate; 3756 } 3757 return -1; 3758 } 3759 3760 /** 3761 * Fetch TX packet counters on current connection 3762 */ 3763 private void fetchPktcntNative(RssiPacketCountInfo info) { 3764 String pktcntPoll = mWifiNative.pktcntPoll(); 3765 3766 if (pktcntPoll != null) { 3767 String[] lines = pktcntPoll.split("\n"); 3768 for (String line : lines) { 3769 String[] prop = line.split("="); 3770 if (prop.length < 2) continue; 3771 try { 3772 if (prop[0].equals("TXGOOD")) { 3773 info.txgood = Integer.parseInt(prop[1]); 3774 } else if (prop[0].equals("TXBAD")) { 3775 info.txbad = Integer.parseInt(prop[1]); 3776 } 3777 } catch (NumberFormatException e) { 3778 // Ignore 3779 } 3780 } 3781 } 3782 } 3783 3784 private boolean clearIPv4Address(String iface) { 3785 try { 3786 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 3787 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 3788 mNwService.setInterfaceConfig(iface, ifcg); 3789 return true; 3790 } catch (RemoteException e) { 3791 return false; 3792 } 3793 } 3794 3795 private boolean isProvisioned(LinkProperties lp) { 3796 // LinkProperties#isProvisioned returns true even if all we have is an IPv4 address and no 3797 // connectivity. This turns out not to be very useful, because we can't distinguish it from 3798 // a state where we have an IPv4 address assigned to the interface but are still running 3799 // DHCP. 3800 // TODO: Fix LinkProperties and remove this function. 3801 if (mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 3802 return lp.hasIPv4Address(); 3803 } else { 3804 return (lp.hasIPv4Address() && lp.hasIPv4DefaultRoute() && lp.hasIPv4DnsServer()) || 3805 (lp.hasGlobalIPv6Address() && lp.hasIPv6DefaultRoute() && lp.hasIPv6DnsServer()); 3806 } 3807 } 3808 3809 /** 3810 * Updates mLinkProperties by merging information from various sources. 3811 * 3812 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 3813 * netlink, static configuration, ...). When one of these sources of information has updated 3814 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 3815 * information that came from other sources. Instead, when one of those sources has new 3816 * information, we update the object that tracks the information from that source and then 3817 * call this method to apply the change to mLinkProperties. 3818 * 3819 * The information in mLinkProperties is currently obtained as follows: 3820 * - Interface name: set in the constructor. 3821 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 3822 * - IPv4 routes, DNS servers, and domains: DHCP. 3823 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 3824 * - HTTP proxy: the wifi config store. 3825 */ 3826 private void updateLinkProperties(int reason) { 3827 LinkProperties newLp = new LinkProperties(); 3828 3829 // Interface name and proxy are locally configured. 3830 newLp.setInterfaceName(mInterfaceName); 3831 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 3832 3833 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 3834 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 3835 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 3836 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 3837 newLp.addRoute(route); 3838 } 3839 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 3840 newLp.addDnsServer(dns); 3841 } 3842 3843 // IPv4 routes, DNS servers and domains come from mDhcpResults. 3844 synchronized (mDhcpResultsLock) { 3845 // Even when we're using static configuration, we don't need to look at the config 3846 // store, because static IP configuration also populates mDhcpResults. 3847 if ((mDhcpResults != null)) { 3848 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 3849 newLp.addRoute(route); 3850 } 3851 for (InetAddress dns : mDhcpResults.dnsServers) { 3852 newLp.addDnsServer(dns); 3853 } 3854 newLp.setDomains(mDhcpResults.domains); 3855 } 3856 } 3857 3858 final boolean linkChanged = !newLp.equals(mLinkProperties); 3859 final boolean wasProvisioned = isProvisioned(mLinkProperties); 3860 final boolean isProvisioned = isProvisioned(newLp); 3861 final DetailedState detailedState = getNetworkDetailedState(); 3862 3863 if (linkChanged) { 3864 if (DBG) { 3865 log("Link configuration changed for netId: " + mLastNetworkId 3866 + " old: " + mLinkProperties + " new: " + newLp); 3867 } 3868 mLinkProperties = newLp; 3869 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 3870 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 3871 } 3872 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 3873 } 3874 3875 if (DBG) { 3876 StringBuilder sb = new StringBuilder(); 3877 sb.append("updateLinkProperties nid: " + mLastNetworkId); 3878 sb.append(" state: " + detailedState); 3879 sb.append(" reason: " + smToString(reason)); 3880 3881 if (mLinkProperties != null) { 3882 if (mLinkProperties.hasIPv4Address()) { 3883 sb.append(" v4"); 3884 } 3885 if (mLinkProperties.hasGlobalIPv6Address()) { 3886 sb.append(" v6"); 3887 } 3888 if (mLinkProperties.hasIPv4DefaultRoute()) { 3889 sb.append(" v4r"); 3890 } 3891 if (mLinkProperties.hasIPv6DefaultRoute()) { 3892 sb.append(" v6r"); 3893 } 3894 if (mLinkProperties.hasIPv4DnsServer()) { 3895 sb.append(" v4dns"); 3896 } 3897 if (mLinkProperties.hasIPv6DnsServer()) { 3898 sb.append(" v6dns"); 3899 } 3900 if (isProvisioned) { 3901 sb.append(" isprov"); 3902 } 3903 } 3904 loge(sb.toString()); 3905 } 3906 3907 // If we just configured or lost IP configuration, do the needful. 3908 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 3909 // here because those should only be called if we're attempting to connect or already 3910 // connected, whereas updateLinkProperties can be called at any time. 3911 switch (reason) { 3912 case DhcpStateMachine.DHCP_SUCCESS: 3913 case CMD_STATIC_IP_SUCCESS: 3914 // IPv4 provisioning succeded. Advance to connected state. 3915 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 3916 if (!isProvisioned) { 3917 // Can never happen unless DHCP reports success but isProvisioned thinks the 3918 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 3919 // mLinkProperties is out of sync with reality, or there's a bug in this code). 3920 // TODO: disconnect here instead. If our configuration is not usable, there's no 3921 // point in staying connected, and if mLinkProperties is out of sync with 3922 // reality, that will cause problems in the future. 3923 loge("IPv4 config succeeded, but not provisioned"); 3924 } 3925 break; 3926 3927 case DhcpStateMachine.DHCP_FAILURE: 3928 // DHCP failed. If we're not already provisioned, give up and disconnect. 3929 // If we're already provisioned (e.g., IPv6-only network), stay connected. 3930 if (!isProvisioned) { 3931 sendMessage(CMD_IP_CONFIGURATION_LOST); 3932 } else { 3933 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 3934 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 3935 3936 // To be sure we don't get stuck with a non-working network if all we had is 3937 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 3938 // and DHCP failed). If we had an IPv4 address before, the deletion of the 3939 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 3940 // necessary for provisioning, its deletion will cause us to disconnect. 3941 // 3942 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 3943 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 3944 // not return true if we're using DHCP and don't have an IPv4 default route. So 3945 // for now it's only here for extra redundancy. However, it will increase 3946 // robustness if we move to getting IPv4 routes from netlink as well. 3947 loge("DHCP failure: provisioned, clearing IPv4 address."); 3948 if (!clearIPv4Address(mInterfaceName)) { 3949 sendMessage(CMD_IP_CONFIGURATION_LOST); 3950 } 3951 } 3952 break; 3953 3954 case CMD_STATIC_IP_FAILURE: 3955 // Static configuration was invalid, or an error occurred in applying it. Give up. 3956 sendMessage(CMD_IP_CONFIGURATION_LOST); 3957 break; 3958 3959 case CMD_UPDATE_LINKPROPERTIES: 3960 // IP addresses, DNS servers, etc. changed. Act accordingly. 3961 if (wasProvisioned && !isProvisioned) { 3962 // We no longer have a usable network configuration. Disconnect. 3963 sendMessage(CMD_IP_CONFIGURATION_LOST); 3964 } else if (!wasProvisioned && isProvisioned) { 3965 // We have a usable IPv6-only config. Advance to connected state. 3966 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 3967 } 3968 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 3969 // If anything has changed and we're already connected, send out a notification. 3970 sendLinkConfigurationChangedBroadcast(); 3971 } 3972 break; 3973 } 3974 } 3975 3976 /** 3977 * Clears all our link properties. 3978 */ 3979 private void clearLinkProperties() { 3980 // Clear the link properties obtained from DHCP and netlink. 3981 synchronized (mDhcpResultsLock) { 3982 if (mDhcpResults != null) { 3983 mDhcpResults.clear(); 3984 } 3985 } 3986 mNetlinkTracker.clearLinkProperties(); 3987 3988 // Now clear the merged link properties. 3989 mLinkProperties.clear(); 3990 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 3991 } 3992 3993 /** 3994 * try to update default route MAC address. 3995 */ 3996 private String updateDefaultRouteMacAddress(int timeout) { 3997 String address = null; 3998 for (RouteInfo route : mLinkProperties.getRoutes()) { 3999 if (route.isDefaultRoute() && route.hasGateway()) { 4000 InetAddress gateway = route.getGateway(); 4001 if (gateway instanceof Inet4Address) { 4002 if (PDBG) { 4003 loge("updateDefaultRouteMacAddress found Ipv4 default :" 4004 + gateway.getHostAddress()); 4005 } 4006 address = macAddressFromRoute(gateway.getHostAddress()); 4007 /* The gateway's MAC address is known */ 4008 if ((address == null) && (timeout > 0)) { 4009 boolean reachable = false; 4010 try { 4011 reachable = gateway.isReachable(timeout); 4012 } catch (Exception e) { 4013 loge("updateDefaultRouteMacAddress exception reaching :" 4014 + gateway.getHostAddress()); 4015 4016 } finally { 4017 if (reachable == true) { 4018 4019 address = macAddressFromRoute(gateway.getHostAddress()); 4020 if (PDBG) { 4021 loge("updateDefaultRouteMacAddress reachable (tried again) :" 4022 + gateway.getHostAddress() + " found " + address); 4023 } 4024 } 4025 } 4026 } 4027 if (address != null) { 4028 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4029 } 4030 } 4031 } 4032 } 4033 return address; 4034 } 4035 4036 private void sendScanResultsAvailableBroadcast() { 4037 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4038 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4039 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4040 } 4041 4042 private void sendRssiChangeBroadcast(final int newRssi) { 4043 try { 4044 mBatteryStats.noteWifiRssiChanged(newRssi); 4045 } catch (RemoteException e) { 4046 // Won't happen. 4047 } 4048 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4049 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4050 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4051 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4052 } 4053 4054 private void sendNetworkStateChangeBroadcast(String bssid) { 4055 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4056 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4057 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4058 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties (mLinkProperties)); 4059 if (bssid != null) 4060 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4061 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4062 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4063 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, new WifiInfo(mWifiInfo)); 4064 } 4065 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4066 } 4067 4068 private void sendLinkConfigurationChangedBroadcast() { 4069 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4070 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4071 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4072 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4073 } 4074 4075 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4076 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4077 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4078 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4079 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4080 } 4081 4082 /** 4083 * Record the detailed state of a network. 4084 * @param state the new {@code DetailedState} 4085 */ 4086 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4087 boolean hidden = false; 4088 4089 if (linkDebouncing || isRoaming()) { 4090 // There is generally a confusion in the system about colluding 4091 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4092 // which leads to multiple confusion. 4093 // 4094 // If link is de-bouncing or roaming, we already have an IP address 4095 // as well we were connected and are doing L2 cycles of 4096 // reconnecting or renewing IP address to check that we still have it 4097 // This L2 link flapping should ne be reflected into the Network state 4098 // which is the state of the WiFi Network visible to Layer 3 and applications 4099 // Note that once debouncing and roaming are completed, we will 4100 // set the Network state to where it should be, or leave it as unchanged 4101 // 4102 hidden = true; 4103 } 4104 if (DBG) { 4105 log("setDetailed state, old =" 4106 + mNetworkInfo.getDetailedState() + " and new state=" + state 4107 + " hidden=" + hidden); 4108 } 4109 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4110 // Always indicate that SSID has changed 4111 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4112 if (DBG) { 4113 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4114 } 4115 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4116 sendNetworkStateChangeBroadcast(null); 4117 } 4118 } 4119 if (hidden == true) { 4120 return false; 4121 } 4122 4123 if (state != mNetworkInfo.getDetailedState()) { 4124 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4125 if (mNetworkAgent != null) { 4126 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4127 } 4128 sendNetworkStateChangeBroadcast(null); 4129 return true; 4130 } 4131 return false; 4132 } 4133 4134 private DetailedState getNetworkDetailedState() { 4135 return mNetworkInfo.getDetailedState(); 4136 } 4137 4138 4139 private SupplicantState handleSupplicantStateChange(Message message) { 4140 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4141 SupplicantState state = stateChangeResult.state; 4142 // Supplicant state change 4143 // [31-13] Reserved for future use 4144 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4145 // 50023 supplicant_state_changed (custom|1|5) 4146 mWifiInfo.setSupplicantState(state); 4147 // Network id is only valid when we start connecting 4148 if (SupplicantState.isConnecting(state)) { 4149 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4150 } else { 4151 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4152 } 4153 4154 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4155 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4156 4157 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4158 4159 return state; 4160 } 4161 4162 /** 4163 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4164 * using the interface, stopping DHCP & disabling interface 4165 */ 4166 private void handleNetworkDisconnect() { 4167 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4168 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4169 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 4170 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 4171 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 4172 4173 4174 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4175 4176 stopDhcp(); 4177 4178 try { 4179 mNwService.clearInterfaceAddresses(mInterfaceName); 4180 mNwService.disableIpv6(mInterfaceName); 4181 } catch (Exception e) { 4182 loge("Failed to clear addresses or disable ipv6" + e); 4183 } 4184 4185 /* Reset data structures */ 4186 mBadLinkspeedcount = 0; 4187 mWifiInfo.reset(); 4188 linkDebouncing = false; 4189 /* Reset roaming parameters */ 4190 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4191 fullBandConnectedTimeIntervalMilli = 20 * 1000; // Start scans at 20 seconds interval 4192 4193 setNetworkDetailedState(DetailedState.DISCONNECTED); 4194 if (mNetworkAgent != null) { 4195 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4196 mNetworkAgent = null; 4197 } 4198 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4199 4200 /* Clear network properties */ 4201 clearLinkProperties(); 4202 4203 /* Cend event to CM & network change broadcast */ 4204 sendNetworkStateChangeBroadcast(mLastBssid); 4205 4206 /* Cancel auto roam requests */ 4207 autoRoamSetBSSID(mLastNetworkId, "any"); 4208 4209 mLastBssid= null; 4210 registerDisconnected(); 4211 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4212 } 4213 4214 private void handleSupplicantConnectionLoss() { 4215 /* Socket connection can be lost when we do a graceful shutdown 4216 * or when the driver is hung. Ensure supplicant is stopped here. 4217 */ 4218 mWifiMonitor.killSupplicant(mP2pSupported); 4219 mWifiNative.closeSupplicantConnection(); 4220 sendSupplicantConnectionChangedBroadcast(false); 4221 setWifiState(WIFI_STATE_DISABLED); 4222 } 4223 4224 void handlePreDhcpSetup() { 4225 mDhcpActive = true; 4226 if (!mBluetoothConnectionActive) { 4227 /* 4228 * There are problems setting the Wi-Fi driver's power 4229 * mode to active when bluetooth coexistence mode is 4230 * enabled or sense. 4231 * <p> 4232 * We set Wi-Fi to active mode when 4233 * obtaining an IP address because we've found 4234 * compatibility issues with some routers with low power 4235 * mode. 4236 * <p> 4237 * In order for this active power mode to properly be set, 4238 * we disable coexistence mode until we're done with 4239 * obtaining an IP address. One exception is if we 4240 * are currently connected to a headset, since disabling 4241 * coexistence would interrupt that connection. 4242 */ 4243 // Disable the coexistence mode 4244 mWifiNative.setBluetoothCoexistenceMode( 4245 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4246 } 4247 4248 // Disable power save and suspend optimizations during DHCP 4249 // Note: The order here is important for now. Brcm driver changes 4250 // power settings when we control suspend mode optimizations. 4251 // TODO: Remove this comment when the driver is fixed. 4252 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4253 mWifiNative.setPowerSave(false); 4254 4255 stopBatchedScan(); 4256 WifiNative.pauseScan(); 4257 4258 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4259 Message msg = new Message(); 4260 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4261 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4262 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4263 msg.obj = mDhcpStateMachine; 4264 mWifiP2pChannel.sendMessage(msg); 4265 } 4266 4267 4268 void startDhcp() { 4269 if (mDhcpStateMachine == null) { 4270 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4271 mContext, WifiStateMachine.this, mInterfaceName); 4272 4273 } 4274 mDhcpStateMachine.registerForPreDhcpNotification(); 4275 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4276 } 4277 4278 void renewDhcp() { 4279 if (mDhcpStateMachine == null) { 4280 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4281 mContext, WifiStateMachine.this, mInterfaceName); 4282 4283 } 4284 mDhcpStateMachine.registerForPreDhcpNotification(); 4285 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4286 } 4287 4288 void stopDhcp() { 4289 if (mDhcpStateMachine != null) { 4290 /* In case we were in middle of DHCP operation restore back powermode */ 4291 handlePostDhcpSetup(); 4292 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4293 } 4294 } 4295 4296 void handlePostDhcpSetup() { 4297 /* Restore power save and suspend optimizations */ 4298 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4299 mWifiNative.setPowerSave(true); 4300 4301 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 4302 4303 // Set the coexistence mode back to its default value 4304 mWifiNative.setBluetoothCoexistenceMode( 4305 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4306 4307 mDhcpActive = false; 4308 4309 startBatchedScan(); 4310 WifiNative.restartScan(); 4311 } 4312 4313 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 4314 4315 if (PDBG) { 4316 loge("wifistatemachine handleIPv4Success <" + dhcpResults.toString() + ">"); 4317 loge("link address " + dhcpResults.ipAddress); 4318 } 4319 4320 synchronized (mDhcpResultsLock) { 4321 mDhcpResults = dhcpResults; 4322 } 4323 4324 Inet4Address addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 4325 if (isRoaming()) { 4326 if (addr instanceof Inet4Address) { 4327 int previousAddress = mWifiInfo.getIpAddress(); 4328 int newAddress = NetworkUtils.inetAddressToInt(addr); 4329 if (previousAddress != newAddress) { 4330 loge("handleIPv4Success, roaming and address changed" + 4331 mWifiInfo + " got: " + addr); 4332 } else { 4333 4334 } 4335 } else { 4336 loge("handleIPv4Success, roaming and didnt get an IPv4 address" + 4337 addr.toString()); 4338 } 4339 } 4340 mWifiInfo.setInetAddress(addr); 4341 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 4342 updateLinkProperties(reason); 4343 } 4344 4345 private void handleSuccessfulIpConfiguration() { 4346 mLastSignalLevel = -1; // Force update of signal strength 4347 WifiConfiguration c = getCurrentWifiConfiguration(); 4348 if (c != null) { 4349 // Reset IP failure tracking 4350 c.numConnectionFailures = 0; 4351 4352 // Tell the framework whether the newly connected network is trusted or untrusted. 4353 if (c.ephemeral) { 4354 mNetworkCapabilities.removeCapability(NetworkCapabilities.NET_CAPABILITY_TRUSTED); 4355 } else { 4356 mNetworkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_TRUSTED); 4357 } 4358 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 4359 } 4360 if (c != null) { 4361 ScanResult result = getCurrentScanResult(); 4362 if (result == null) { 4363 loge("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 4364 c.configKey()); 4365 } else { 4366 // Clear the per BSSID failure count 4367 result.numIpConfigFailures = 0; 4368 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 4369 // any BSSID, even though it may already have a non zero ip failure count, 4370 // this will typically happen if the user walks away and come back to his arrea 4371 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 4372 // in supplicant for a couple of hours or a day 4373 mWifiNative.clearBlacklist(); 4374 } 4375 } 4376 } 4377 4378 private void handleIPv4Failure(int reason) { 4379 synchronized(mDhcpResultsLock) { 4380 if (mDhcpResults != null) { 4381 mDhcpResults.clear(); 4382 } 4383 } 4384 if (PDBG) { 4385 loge("wifistatemachine handleIPv4Failure"); 4386 } 4387 updateLinkProperties(reason); 4388 } 4389 4390 private void handleIpConfigurationLost() { 4391 mWifiInfo.setInetAddress(null); 4392 mWifiInfo.setMeteredHint(false); 4393 4394 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 4395 "DHCP FAILURE", mWifiInfo.getBSSID()); 4396 4397 /* DHCP times out after about 30 seconds, we do a 4398 * disconnect thru supplicant, we will let autojoin retry connecting to the network 4399 */ 4400 mWifiNative.disconnect(); 4401 } 4402 4403 /* Current design is to not set the config on a running hostapd but instead 4404 * stop and start tethering when user changes config on a running access point 4405 * 4406 * TODO: Add control channel setup through hostapd that allows changing config 4407 * on a running daemon 4408 */ 4409 private void startSoftApWithConfig(final WifiConfiguration config) { 4410 // Start hostapd on a separate thread 4411 new Thread(new Runnable() { 4412 public void run() { 4413 try { 4414 mNwService.startAccessPoint(config, mInterfaceName); 4415 } catch (Exception e) { 4416 loge("Exception in softap start " + e); 4417 try { 4418 mNwService.stopAccessPoint(mInterfaceName); 4419 mNwService.startAccessPoint(config, mInterfaceName); 4420 } catch (Exception e1) { 4421 loge("Exception in softap re-start " + e1); 4422 sendMessage(CMD_START_AP_FAILURE); 4423 return; 4424 } 4425 } 4426 if (DBG) log("Soft AP start successful"); 4427 sendMessage(CMD_START_AP_SUCCESS); 4428 } 4429 }).start(); 4430 } 4431 4432 /* 4433 * Read a MAC address in /proc/arp/table, used by WifistateMachine 4434 * so as to record MAC address of default gateway. 4435 **/ 4436 private String macAddressFromRoute(String ipAddress) { 4437 String macAddress = null; 4438 BufferedReader reader = null; 4439 try { 4440 reader = new BufferedReader(new FileReader("/proc/net/arp")); 4441 4442 // Skip over the line bearing colum titles 4443 String line = reader.readLine(); 4444 4445 while ((line = reader.readLine()) != null) { 4446 String[] tokens = line.split("[ ]+"); 4447 if (tokens.length < 6) { 4448 continue; 4449 } 4450 4451 // ARP column format is 4452 // Address HWType HWAddress Flags Mask IFace 4453 String ip = tokens[0]; 4454 String mac = tokens[3]; 4455 4456 if (ipAddress.equals(ip)) { 4457 macAddress = mac; 4458 break; 4459 } 4460 } 4461 4462 if (macAddress == null) { 4463 loge("Did not find remoteAddress {" + ipAddress + "} in " + 4464 "/proc/net/arp"); 4465 } 4466 4467 } catch (FileNotFoundException e) { 4468 loge("Could not open /proc/net/arp to lookup mac address"); 4469 } catch (IOException e) { 4470 loge("Could not read /proc/net/arp to lookup mac address"); 4471 } finally { 4472 try { 4473 if (reader != null) { 4474 reader.close(); 4475 } 4476 } catch (IOException e) { 4477 // Do nothing 4478 } 4479 } 4480 return macAddress; 4481 4482 } 4483 4484 private class WifiNetworkFactory extends NetworkFactory { 4485 /** Number of outstanding NetworkRequests for untrusted networks. */ 4486 private int mUntrustedReqCount = 0; 4487 4488 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 4489 super(l, c, TAG, f); 4490 } 4491 4492 @Override 4493 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 4494 ++mConnectionRequests; 4495 if (!networkRequest.networkCapabilities.hasCapability( 4496 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 4497 if (++mUntrustedReqCount == 1) { 4498 mWifiAutoJoinController.setAllowUntrustedConnections(true); 4499 } 4500 } 4501 } 4502 4503 @Override 4504 protected void releaseNetworkFor(NetworkRequest networkRequest) { 4505 --mConnectionRequests; 4506 if (!networkRequest.networkCapabilities.hasCapability( 4507 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 4508 if (--mUntrustedReqCount == 0) { 4509 mWifiAutoJoinController.setAllowUntrustedConnections(false); 4510 } 4511 } 4512 } 4513 4514 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 4515 pw.println("mConnectionRequests " + mConnectionRequests); 4516 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 4517 } 4518 4519 } 4520 /******************************************************** 4521 * HSM states 4522 *******************************************************/ 4523 4524 class DefaultState extends State { 4525 @Override 4526 public boolean processMessage(Message message) { 4527 logStateAndMessage(message, getClass().getSimpleName()); 4528 4529 switch (message.what) { 4530 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 4531 AsyncChannel ac = (AsyncChannel) message.obj; 4532 if (ac == mWifiP2pChannel) { 4533 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 4534 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 4535 } else { 4536 loge("WifiP2pService connection failure, error=" + message.arg1); 4537 } 4538 } else { 4539 loge("got HALF_CONNECTED for unknown channel"); 4540 } 4541 break; 4542 } 4543 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 4544 AsyncChannel ac = (AsyncChannel) message.obj; 4545 if (ac == mWifiP2pChannel) { 4546 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 4547 //TODO: Re-establish connection to state machine after a delay 4548 // mWifiP2pChannel.connect(mContext, getHandler(), 4549 // mWifiP2pManager.getMessenger()); 4550 } 4551 break; 4552 } 4553 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 4554 mBluetoothConnectionActive = (message.arg1 != 4555 BluetoothAdapter.STATE_DISCONNECTED); 4556 break; 4557 /* Synchronous call returns */ 4558 case CMD_PING_SUPPLICANT: 4559 case CMD_ENABLE_NETWORK: 4560 case CMD_ADD_OR_UPDATE_NETWORK: 4561 case CMD_REMOVE_NETWORK: 4562 case CMD_SAVE_CONFIG: 4563 replyToMessage(message, message.what, FAILURE); 4564 break; 4565 case CMD_GET_CAPABILITY_FREQ: 4566 replyToMessage(message, message.what, null); 4567 break; 4568 case CMD_GET_CONFIGURED_NETWORKS: 4569 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4570 break; 4571 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 4572 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4573 break; 4574 case CMD_ENABLE_RSSI_POLL: 4575 mEnableRssiPolling = (message.arg1 == 1); 4576 break; 4577 case CMD_SET_HIGH_PERF_MODE: 4578 if (message.arg1 == 1) { 4579 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 4580 } else { 4581 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 4582 } 4583 break; 4584 case CMD_BOOT_COMPLETED: 4585 String countryCode = mPersistedCountryCode; 4586 if (TextUtils.isEmpty(countryCode) == false) { 4587 Settings.Global.putString(mContext.getContentResolver(), 4588 Settings.Global.WIFI_COUNTRY_CODE, 4589 countryCode); 4590 // It may be that the state transition that should send this info 4591 // to the driver happened between mPersistedCountryCode getting set 4592 // and now, so simply persisting it here would mean we have sent 4593 // nothing to the driver. Send the cmd so it might be set now. 4594 int sequenceNum = mCountryCodeSequence.incrementAndGet(); 4595 sendMessageAtFrontOfQueue(CMD_SET_COUNTRY_CODE, 4596 sequenceNum, 0, countryCode); 4597 } 4598 4599 checkAndSetConnectivityInstance(); 4600 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 4601 NETWORKTYPE, mNetworkCapabilitiesFilter); 4602 mNetworkFactory.setScoreFilter(60); 4603 mCm.registerNetworkFactory(new Messenger(mNetworkFactory), NETWORKTYPE); 4604 break; 4605 case CMD_SET_BATCHED_SCAN: 4606 recordBatchedScanSettings(message.arg1, message.arg2, (Bundle)message.obj); 4607 break; 4608 case CMD_POLL_BATCHED_SCAN: 4609 handleBatchedScanPollRequest(); 4610 break; 4611 case CMD_START_NEXT_BATCHED_SCAN: 4612 startNextBatchedScan(); 4613 break; 4614 case CMD_SCREEN_STATE_CHANGED: 4615 handleScreenStateChanged(message.arg1 != 0, 4616 /* startBackgroundScanIfNeeded = */ false); 4617 break; 4618 /* Discard */ 4619 case CMD_START_SCAN: 4620 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4621 break; 4622 case CMD_START_SUPPLICANT: 4623 case CMD_STOP_SUPPLICANT: 4624 case CMD_STOP_SUPPLICANT_FAILED: 4625 case CMD_START_DRIVER: 4626 case CMD_STOP_DRIVER: 4627 case CMD_DELAYED_STOP_DRIVER: 4628 case CMD_DRIVER_START_TIMED_OUT: 4629 case CMD_START_AP: 4630 case CMD_START_AP_SUCCESS: 4631 case CMD_START_AP_FAILURE: 4632 case CMD_STOP_AP: 4633 case CMD_TETHER_STATE_CHANGE: 4634 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 4635 case CMD_DISCONNECT: 4636 case CMD_RECONNECT: 4637 case CMD_REASSOCIATE: 4638 case CMD_RELOAD_TLS_AND_RECONNECT: 4639 case WifiMonitor.SUP_CONNECTION_EVENT: 4640 case WifiMonitor.SUP_DISCONNECTION_EVENT: 4641 case WifiMonitor.NETWORK_CONNECTION_EVENT: 4642 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 4643 case WifiMonitor.SCAN_RESULTS_EVENT: 4644 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 4645 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 4646 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 4647 case WifiMonitor.WPS_OVERLAP_EVENT: 4648 case CMD_BLACKLIST_NETWORK: 4649 case CMD_CLEAR_BLACKLIST: 4650 case CMD_SET_OPERATIONAL_MODE: 4651 case CMD_SET_COUNTRY_CODE: 4652 case CMD_SET_FREQUENCY_BAND: 4653 case CMD_RSSI_POLL: 4654 case CMD_ENABLE_ALL_NETWORKS: 4655 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 4656 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 4657 /* Handled by WifiApConfigStore */ 4658 case CMD_SET_AP_CONFIG: 4659 case CMD_SET_AP_CONFIG_COMPLETED: 4660 case CMD_REQUEST_AP_CONFIG: 4661 case CMD_RESPONSE_AP_CONFIG: 4662 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 4663 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 4664 case CMD_NO_NETWORKS_PERIODIC_SCAN: 4665 case CMD_DISABLE_P2P_RSP: 4666 case WifiMonitor.SUP_REQUEST_IDENTITY: 4667 case CMD_TEST_NETWORK_DISCONNECT: 4668 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 4669 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 4670 case CMD_TARGET_BSSID: 4671 case CMD_AUTO_CONNECT: 4672 case CMD_AUTO_ROAM: 4673 case CMD_AUTO_SAVE_NETWORK: 4674 case CMD_ASSOCIATED_BSSID: 4675 case CMD_UNWANTED_NETWORK: 4676 case CMD_DISCONNECTING_WATCHDOG_TIMER: 4677 case CMD_ROAM_WATCHDOG_TIMER: 4678 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4679 break; 4680 case DhcpStateMachine.CMD_ON_QUIT: 4681 mDhcpStateMachine = null; 4682 break; 4683 case CMD_SET_SUSPEND_OPT_ENABLED: 4684 if (message.arg1 == 1) { 4685 mSuspendWakeLock.release(); 4686 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 4687 } else { 4688 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 4689 } 4690 break; 4691 case WifiMonitor.DRIVER_HUNG_EVENT: 4692 setSupplicantRunning(false); 4693 setSupplicantRunning(true); 4694 break; 4695 case WifiManager.CONNECT_NETWORK: 4696 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 4697 WifiManager.BUSY); 4698 break; 4699 case WifiManager.FORGET_NETWORK: 4700 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 4701 WifiManager.BUSY); 4702 break; 4703 case WifiManager.SAVE_NETWORK: 4704 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 4705 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 4706 WifiManager.BUSY); 4707 break; 4708 case WifiManager.START_WPS: 4709 replyToMessage(message, WifiManager.WPS_FAILED, 4710 WifiManager.BUSY); 4711 break; 4712 case WifiManager.CANCEL_WPS: 4713 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 4714 WifiManager.BUSY); 4715 break; 4716 case WifiManager.DISABLE_NETWORK: 4717 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 4718 WifiManager.BUSY); 4719 break; 4720 case WifiManager.RSSI_PKTCNT_FETCH: 4721 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 4722 WifiManager.BUSY); 4723 break; 4724 case CMD_GET_SUPPORTED_FEATURES: 4725 if (WifiNative.startHal()) { 4726 int featureSet = WifiNative.getSupportedFeatureSet(); 4727 replyToMessage(message, message.what, featureSet); 4728 } else { 4729 replyToMessage(message, message.what, 0); 4730 } 4731 break; 4732 case CMD_GET_LINK_LAYER_STATS: 4733 // Not supported hence reply with error message 4734 replyToMessage(message, message.what, null); 4735 break; 4736 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 4737 NetworkInfo info = (NetworkInfo) message.obj; 4738 mP2pConnected.set(info.isConnected()); 4739 break; 4740 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 4741 mTemporarilyDisconnectWifi = (message.arg1 == 1); 4742 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 4743 break; 4744 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 4745 case CMD_UPDATE_LINKPROPERTIES: 4746 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 4747 break; 4748 case CMD_IP_CONFIGURATION_SUCCESSFUL: 4749 case CMD_IP_CONFIGURATION_LOST: 4750 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4751 break; 4752 case CMD_GET_CONNECTION_STATISTICS: 4753 replyToMessage(message, message.what, mWifiConnectionStatistics); 4754 break; 4755 default: 4756 loge("Error! unhandled message" + message); 4757 break; 4758 } 4759 return HANDLED; 4760 } 4761 } 4762 4763 class InitialState extends State { 4764 @Override 4765 public void enter() { 4766 mWifiNative.unloadDriver(); 4767 4768 if (mWifiP2pChannel == null) { 4769 mWifiP2pChannel = new AsyncChannel(); 4770 mWifiP2pChannel.connect(mContext, getHandler(), 4771 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 4772 } 4773 4774 if (mWifiApConfigChannel == null) { 4775 mWifiApConfigChannel = new AsyncChannel(); 4776 WifiApConfigStore wifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 4777 mContext, getHandler()); 4778 wifiApConfigStore.loadApConfiguration(); 4779 mWifiApConfigChannel.connectSync(mContext, getHandler(), 4780 wifiApConfigStore.getMessenger()); 4781 } 4782 } 4783 @Override 4784 public boolean processMessage(Message message) { 4785 logStateAndMessage(message, getClass().getSimpleName()); 4786 switch (message.what) { 4787 case CMD_START_SUPPLICANT: 4788 if (mWifiNative.loadDriver()) { 4789 try { 4790 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 4791 } catch (Exception e) { 4792 loge("Failed to reload STA firmware " + e); 4793 // Continue 4794 } 4795 4796 try { 4797 // A runtime crash can leave the interface up and 4798 // IP addresses configured, and this affects 4799 // connectivity when supplicant starts up. 4800 // Ensure interface is down and we have no IP 4801 // addresses before a supplicant start. 4802 mNwService.setInterfaceDown(mInterfaceName); 4803 mNwService.clearInterfaceAddresses(mInterfaceName); 4804 4805 // Set privacy extensions 4806 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 4807 4808 // IPv6 is enabled only as long as access point is connected since: 4809 // - IPv6 addresses and routes stick around after disconnection 4810 // - kernel is unaware when connected and fails to start IPv6 negotiation 4811 // - kernel can start autoconfiguration when 802.1x is not complete 4812 mNwService.disableIpv6(mInterfaceName); 4813 } catch (RemoteException re) { 4814 loge("Unable to change interface settings: " + re); 4815 } catch (IllegalStateException ie) { 4816 loge("Unable to change interface settings: " + ie); 4817 } 4818 4819 /* Stop a running supplicant after a runtime restart 4820 * Avoids issues with drivers that do not handle interface down 4821 * on a running supplicant properly. 4822 */ 4823 mWifiMonitor.killSupplicant(mP2pSupported); 4824 if(mWifiNative.startSupplicant(mP2pSupported)) { 4825 setWifiState(WIFI_STATE_ENABLING); 4826 if (DBG) log("Supplicant start successful"); 4827 mWifiMonitor.startMonitoring(); 4828 transitionTo(mSupplicantStartingState); 4829 } else { 4830 loge("Failed to start supplicant!"); 4831 } 4832 } else { 4833 loge("Failed to load driver"); 4834 } 4835 break; 4836 case CMD_START_AP: 4837 if (mWifiNative.loadDriver()) { 4838 setWifiApState(WIFI_AP_STATE_ENABLING); 4839 transitionTo(mSoftApStartingState); 4840 } else { 4841 loge("Failed to load driver for softap"); 4842 } 4843 default: 4844 return NOT_HANDLED; 4845 } 4846 return HANDLED; 4847 } 4848 } 4849 4850 class SupplicantStartingState extends State { 4851 private void initializeWpsDetails() { 4852 String detail; 4853 detail = SystemProperties.get("ro.product.name", ""); 4854 if (!mWifiNative.setDeviceName(detail)) { 4855 loge("Failed to set device name " + detail); 4856 } 4857 detail = SystemProperties.get("ro.product.manufacturer", ""); 4858 if (!mWifiNative.setManufacturer(detail)) { 4859 loge("Failed to set manufacturer " + detail); 4860 } 4861 detail = SystemProperties.get("ro.product.model", ""); 4862 if (!mWifiNative.setModelName(detail)) { 4863 loge("Failed to set model name " + detail); 4864 } 4865 detail = SystemProperties.get("ro.product.model", ""); 4866 if (!mWifiNative.setModelNumber(detail)) { 4867 loge("Failed to set model number " + detail); 4868 } 4869 detail = SystemProperties.get("ro.serialno", ""); 4870 if (!mWifiNative.setSerialNumber(detail)) { 4871 loge("Failed to set serial number " + detail); 4872 } 4873 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 4874 loge("Failed to set WPS config methods"); 4875 } 4876 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 4877 loge("Failed to set primary device type " + mPrimaryDeviceType); 4878 } 4879 } 4880 4881 @Override 4882 public boolean processMessage(Message message) { 4883 logStateAndMessage(message, getClass().getSimpleName()); 4884 4885 switch(message.what) { 4886 case WifiMonitor.SUP_CONNECTION_EVENT: 4887 if (DBG) log("Supplicant connection established"); 4888 setWifiState(WIFI_STATE_ENABLED); 4889 mSupplicantRestartCount = 0; 4890 /* Reset the supplicant state to indicate the supplicant 4891 * state is not known at this time */ 4892 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 4893 /* Initialize data structures */ 4894 mLastBssid = null; 4895 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4896 mLastSignalLevel = -1; 4897 4898 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 4899 mWifiNative.enableSaveConfig(); 4900 mWifiConfigStore.loadAndEnableAllNetworks(); 4901 if (mWifiConfigStore.enableVerboseLogging > 0) { 4902 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging); 4903 } 4904 if (mWifiConfigStore.associatedPartialScanPeriodMilli < 0) { 4905 mWifiConfigStore.associatedPartialScanPeriodMilli = 0; 4906 } 4907 initializeWpsDetails(); 4908 4909 sendSupplicantConnectionChangedBroadcast(true); 4910 transitionTo(mDriverStartedState); 4911 break; 4912 case WifiMonitor.SUP_DISCONNECTION_EVENT: 4913 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 4914 loge("Failed to setup control channel, restart supplicant"); 4915 mWifiMonitor.killSupplicant(mP2pSupported); 4916 transitionTo(mInitialState); 4917 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 4918 } else { 4919 loge("Failed " + mSupplicantRestartCount + 4920 " times to start supplicant, unload driver"); 4921 mSupplicantRestartCount = 0; 4922 setWifiState(WIFI_STATE_UNKNOWN); 4923 transitionTo(mInitialState); 4924 } 4925 break; 4926 case CMD_START_SUPPLICANT: 4927 case CMD_STOP_SUPPLICANT: 4928 case CMD_START_AP: 4929 case CMD_STOP_AP: 4930 case CMD_START_DRIVER: 4931 case CMD_STOP_DRIVER: 4932 case CMD_SET_OPERATIONAL_MODE: 4933 case CMD_SET_COUNTRY_CODE: 4934 case CMD_SET_FREQUENCY_BAND: 4935 case CMD_START_PACKET_FILTERING: 4936 case CMD_STOP_PACKET_FILTERING: 4937 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 4938 deferMessage(message); 4939 break; 4940 default: 4941 return NOT_HANDLED; 4942 } 4943 return HANDLED; 4944 } 4945 } 4946 4947 class SupplicantStartedState extends State { 4948 @Override 4949 public void enter() { 4950 /* Wifi is available as long as we have a connection to supplicant */ 4951 mNetworkInfo.setIsAvailable(true); 4952 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4953 4954 int defaultInterval = mContext.getResources().getInteger( 4955 R.integer.config_wifi_supplicant_scan_interval); 4956 4957 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 4958 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 4959 defaultInterval); 4960 4961 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 4962 mWifiNative.setExternalSim(true); 4963 4964 setRandomMacOui(); 4965 mWifiNative.enableAutoConnect(false); 4966 } 4967 4968 @Override 4969 public boolean processMessage(Message message) { 4970 logStateAndMessage(message, getClass().getSimpleName()); 4971 4972 switch(message.what) { 4973 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 4974 if (mP2pSupported) { 4975 transitionTo(mWaitForP2pDisableState); 4976 } else { 4977 transitionTo(mSupplicantStoppingState); 4978 } 4979 break; 4980 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 4981 loge("Connection lost, restart supplicant"); 4982 handleSupplicantConnectionLoss(); 4983 handleNetworkDisconnect(); 4984 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 4985 if (mP2pSupported) { 4986 transitionTo(mWaitForP2pDisableState); 4987 } else { 4988 transitionTo(mInitialState); 4989 } 4990 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 4991 break; 4992 case WifiMonitor.SCAN_RESULTS_EVENT: 4993 closeRadioScanStats(); 4994 noteScanEnd(); 4995 setScanResults(); 4996 if (mIsFullScanOngoing) { 4997 /* Just updated results from full scan, let apps know about this */ 4998 sendScanResultsAvailableBroadcast(); 4999 } 5000 mIsScanOngoing = false; 5001 mIsFullScanOngoing = false; 5002 if (mBufferedScanMsg.size() > 0) 5003 sendMessage(mBufferedScanMsg.remove()); 5004 break; 5005 case CMD_PING_SUPPLICANT: 5006 boolean ok = mWifiNative.ping(); 5007 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5008 break; 5009 case CMD_GET_CAPABILITY_FREQ: 5010 String freqs = mWifiNative.getFreqCapability(); 5011 replyToMessage(message, message.what, freqs); 5012 break; 5013 case CMD_START_AP: 5014 /* Cannot start soft AP while in client mode */ 5015 loge("Failed to start soft AP with a running supplicant"); 5016 setWifiApState(WIFI_AP_STATE_FAILED); 5017 break; 5018 case CMD_SET_OPERATIONAL_MODE: 5019 mOperationalMode = message.arg1; 5020 break; 5021 case CMD_TARGET_BSSID: 5022 // Trying to associate to this BSSID 5023 if (message.obj != null) { 5024 mTargetRoamBSSID = (String) message.obj; 5025 } 5026 break; 5027 case CMD_GET_LINK_LAYER_STATS: 5028 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5029 if (stats == null) { 5030 // When firmware doesnt support link layer stats, return an empty object 5031 stats = new WifiLinkLayerStats(); 5032 } 5033 replyToMessage(message, message.what, stats); 5034 break; 5035 default: 5036 return NOT_HANDLED; 5037 } 5038 return HANDLED; 5039 } 5040 5041 @Override 5042 public void exit() { 5043 mNetworkInfo.setIsAvailable(false); 5044 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5045 } 5046 } 5047 5048 class SupplicantStoppingState extends State { 5049 @Override 5050 public void enter() { 5051 /* Send any reset commands to supplicant before shutting it down */ 5052 handleNetworkDisconnect(); 5053 if (mDhcpStateMachine != null) { 5054 mDhcpStateMachine.doQuit(); 5055 } 5056 5057 if (DBG) log("stopping supplicant"); 5058 mWifiMonitor.stopSupplicant(); 5059 5060 /* Send ourselves a delayed message to indicate failure after a wait time */ 5061 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5062 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5063 setWifiState(WIFI_STATE_DISABLING); 5064 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5065 } 5066 @Override 5067 public boolean processMessage(Message message) { 5068 logStateAndMessage(message, getClass().getSimpleName()); 5069 5070 switch(message.what) { 5071 case WifiMonitor.SUP_CONNECTION_EVENT: 5072 loge("Supplicant connection received while stopping"); 5073 break; 5074 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5075 if (DBG) log("Supplicant connection lost"); 5076 handleSupplicantConnectionLoss(); 5077 transitionTo(mInitialState); 5078 break; 5079 case CMD_STOP_SUPPLICANT_FAILED: 5080 if (message.arg1 == mSupplicantStopFailureToken) { 5081 loge("Timed out on a supplicant stop, kill and proceed"); 5082 handleSupplicantConnectionLoss(); 5083 transitionTo(mInitialState); 5084 } 5085 break; 5086 case CMD_START_SUPPLICANT: 5087 case CMD_STOP_SUPPLICANT: 5088 case CMD_START_AP: 5089 case CMD_STOP_AP: 5090 case CMD_START_DRIVER: 5091 case CMD_STOP_DRIVER: 5092 case CMD_SET_OPERATIONAL_MODE: 5093 case CMD_SET_COUNTRY_CODE: 5094 case CMD_SET_FREQUENCY_BAND: 5095 case CMD_START_PACKET_FILTERING: 5096 case CMD_STOP_PACKET_FILTERING: 5097 deferMessage(message); 5098 break; 5099 default: 5100 return NOT_HANDLED; 5101 } 5102 return HANDLED; 5103 } 5104 } 5105 5106 class DriverStartingState extends State { 5107 private int mTries; 5108 @Override 5109 public void enter() { 5110 mTries = 1; 5111 /* Send ourselves a delayed message to start driver a second time */ 5112 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5113 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5114 } 5115 @Override 5116 public boolean processMessage(Message message) { 5117 logStateAndMessage(message, getClass().getSimpleName()); 5118 5119 switch(message.what) { 5120 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5121 SupplicantState state = handleSupplicantStateChange(message); 5122 /* If suplicant is exiting out of INTERFACE_DISABLED state into 5123 * a state that indicates driver has started, it is ready to 5124 * receive driver commands 5125 */ 5126 if (SupplicantState.isDriverActive(state)) { 5127 transitionTo(mDriverStartedState); 5128 } 5129 break; 5130 case CMD_DRIVER_START_TIMED_OUT: 5131 if (message.arg1 == mDriverStartToken) { 5132 if (mTries >= 2) { 5133 loge("Failed to start driver after " + mTries); 5134 transitionTo(mDriverStoppedState); 5135 } else { 5136 loge("Driver start failed, retrying"); 5137 mWakeLock.acquire(); 5138 mWifiNative.startDriver(); 5139 mWakeLock.release(); 5140 5141 ++mTries; 5142 /* Send ourselves a delayed message to start driver again */ 5143 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5144 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5145 } 5146 } 5147 break; 5148 /* Queue driver commands & connection events */ 5149 case CMD_START_DRIVER: 5150 case CMD_STOP_DRIVER: 5151 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5152 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5153 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5154 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5155 case WifiMonitor.WPS_OVERLAP_EVENT: 5156 case CMD_SET_COUNTRY_CODE: 5157 case CMD_SET_FREQUENCY_BAND: 5158 case CMD_START_PACKET_FILTERING: 5159 case CMD_STOP_PACKET_FILTERING: 5160 case CMD_START_SCAN: 5161 case CMD_DISCONNECT: 5162 case CMD_REASSOCIATE: 5163 case CMD_RECONNECT: 5164 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5165 deferMessage(message); 5166 break; 5167 case WifiMonitor.SCAN_RESULTS_EVENT: 5168 // Loose scan results obtained in Driver Starting state, they can only confuse 5169 // the state machine 5170 break; 5171 default: 5172 return NOT_HANDLED; 5173 } 5174 return HANDLED; 5175 } 5176 } 5177 5178 class DriverStartedState extends State { 5179 @Override 5180 public void enter() { 5181 5182 if (PDBG) { 5183 loge("Driverstarted State enter"); 5184 } 5185 mIsRunning = true; 5186 mInDelayedStop = false; 5187 mDelayedStopCounter++; 5188 updateBatteryWorkSource(null); 5189 /** 5190 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 5191 * When this mode is on, some of the low-level scan parameters used by the 5192 * driver are changed to reduce interference with bluetooth 5193 */ 5194 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5195 /* set country code */ 5196 setCountryCode(); 5197 /* set frequency band of operation */ 5198 setFrequencyBand(); 5199 /* initialize network state */ 5200 setNetworkDetailedState(DetailedState.DISCONNECTED); 5201 5202 /* Remove any filtering on Multicast v6 at start */ 5203 mWifiNative.stopFilteringMulticastV6Packets(); 5204 5205 /* Reset Multicast v4 filtering state */ 5206 if (mFilteringMulticastV4Packets.get()) { 5207 mWifiNative.startFilteringMulticastV4Packets(); 5208 } else { 5209 mWifiNative.stopFilteringMulticastV4Packets(); 5210 } 5211 5212 mDhcpActive = false; 5213 5214 startBatchedScan(); 5215 5216 if (mOperationalMode != CONNECT_MODE) { 5217 mWifiNative.disconnect(); 5218 mWifiConfigStore.disableAllNetworks(); 5219 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5220 setWifiState(WIFI_STATE_DISABLED); 5221 } 5222 transitionTo(mScanModeState); 5223 } else { 5224 5225 // Status pulls in the current supplicant state and network connection state 5226 // events over the monitor connection. This helps framework sync up with 5227 // current supplicant state 5228 // TODO: actually check th supplicant status string and make sure the supplicant 5229 // is in disconnecte4d state. 5230 mWifiNative.status(); 5231 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 5232 transitionTo(mDisconnectedState); 5233 } 5234 5235 // We may have missed screen update at boot 5236 if (mScreenBroadcastReceived.get() == false) { 5237 PowerManager powerManager = (PowerManager)mContext.getSystemService( 5238 Context.POWER_SERVICE); 5239 handleScreenStateChanged(powerManager.isScreenOn(), 5240 /* startBackgroundScanIfNeeded = */ false); 5241 } else { 5242 // Set the right suspend mode settings 5243 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 5244 && mUserWantsSuspendOpt.get()); 5245 } 5246 mWifiNative.setPowerSave(true); 5247 5248 if (mP2pSupported) { 5249 if (mOperationalMode == CONNECT_MODE) { 5250 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 5251 } else { 5252 // P2P statemachine starts in disabled state, and is not enabled until 5253 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 5254 // keep it disabled. 5255 } 5256 } 5257 5258 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5259 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5260 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 5261 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5262 5263 if (PDBG) { 5264 loge("Driverstarted State enter done"); 5265 } 5266 } 5267 5268 @Override 5269 public boolean processMessage(Message message) { 5270 logStateAndMessage(message, getClass().getSimpleName()); 5271 5272 switch(message.what) { 5273 case CMD_START_SCAN: 5274 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5275 break; 5276 case CMD_SET_BATCHED_SCAN: 5277 if (recordBatchedScanSettings(message.arg1, message.arg2, 5278 (Bundle)message.obj)) { 5279 if (mBatchedScanSettings != null) { 5280 startBatchedScan(); 5281 } else { 5282 stopBatchedScan(); 5283 } 5284 } 5285 break; 5286 case CMD_SET_COUNTRY_CODE: 5287 String country = (String) message.obj; 5288 final boolean persist = (message.arg2 == 1); 5289 final int sequence = message.arg1; 5290 if (sequence != mCountryCodeSequence.get()) { 5291 if (DBG) log("set country code ignored due to sequnce num"); 5292 break; 5293 } 5294 if (DBG) log("set country code " + country); 5295 if (persist) { 5296 mPersistedCountryCode = country; 5297 Settings.Global.putString(mContext.getContentResolver(), 5298 Settings.Global.WIFI_COUNTRY_CODE, 5299 country); 5300 } 5301 country = country.toUpperCase(Locale.ROOT); 5302 if (mLastSetCountryCode == null 5303 || country.equals(mLastSetCountryCode) == false) { 5304 if (mWifiNative.setCountryCode(country)) { 5305 mLastSetCountryCode = country; 5306 } else { 5307 loge("Failed to set country code " + country); 5308 } 5309 } 5310 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5311 break; 5312 case CMD_SET_FREQUENCY_BAND: 5313 int band = message.arg1; 5314 if (DBG) log("set frequency band " + band); 5315 if (mWifiNative.setBand(band)) { 5316 5317 if (PDBG) loge("did set frequency band " + band); 5318 5319 mFrequencyBand.set(band); 5320 // Flush old data - like scan results 5321 mWifiNative.bssFlush(); 5322 // Fetch the latest scan results when frequency band is set 5323 startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 5324 5325 if (PDBG) loge("done set frequency band " + band); 5326 5327 } else { 5328 loge("Failed to set frequency band " + band); 5329 } 5330 break; 5331 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5332 mBluetoothConnectionActive = (message.arg1 != 5333 BluetoothAdapter.STATE_DISCONNECTED); 5334 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5335 break; 5336 case CMD_STOP_DRIVER: 5337 int mode = message.arg1; 5338 5339 /* Already doing a delayed stop */ 5340 if (mInDelayedStop) { 5341 if (DBG) log("Already in delayed stop"); 5342 break; 5343 } 5344 /* disconnect right now, but leave the driver running for a bit */ 5345 mWifiConfigStore.disableAllNetworks(); 5346 5347 mInDelayedStop = true; 5348 mDelayedStopCounter++; 5349 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 5350 5351 /* send regular delayed shut down */ 5352 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 5353 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 5354 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 5355 DRIVER_STOP_REQUEST, driverStopIntent, 5356 PendingIntent.FLAG_UPDATE_CURRENT); 5357 5358 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 5359 + mDriverStopDelayMs, mDriverStopIntent); 5360 break; 5361 case CMD_START_DRIVER: 5362 if (mInDelayedStop) { 5363 mInDelayedStop = false; 5364 mDelayedStopCounter++; 5365 mAlarmManager.cancel(mDriverStopIntent); 5366 if (DBG) log("Delayed stop ignored due to start"); 5367 if (mOperationalMode == CONNECT_MODE) { 5368 mWifiConfigStore.enableAllNetworks(); 5369 } 5370 } 5371 break; 5372 case CMD_DELAYED_STOP_DRIVER: 5373 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 5374 if (message.arg1 != mDelayedStopCounter) break; 5375 if (getCurrentState() != mDisconnectedState) { 5376 mWifiNative.disconnect(); 5377 handleNetworkDisconnect(); 5378 } 5379 mWakeLock.acquire(); 5380 mWifiNative.stopDriver(); 5381 mWakeLock.release(); 5382 if (mP2pSupported) { 5383 transitionTo(mWaitForP2pDisableState); 5384 } else { 5385 transitionTo(mDriverStoppingState); 5386 } 5387 break; 5388 case CMD_START_PACKET_FILTERING: 5389 if (message.arg1 == MULTICAST_V6) { 5390 mWifiNative.startFilteringMulticastV6Packets(); 5391 } else if (message.arg1 == MULTICAST_V4) { 5392 mWifiNative.startFilteringMulticastV4Packets(); 5393 } else { 5394 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 5395 } 5396 break; 5397 case CMD_STOP_PACKET_FILTERING: 5398 if (message.arg1 == MULTICAST_V6) { 5399 mWifiNative.stopFilteringMulticastV6Packets(); 5400 } else if (message.arg1 == MULTICAST_V4) { 5401 mWifiNative.stopFilteringMulticastV4Packets(); 5402 } else { 5403 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 5404 } 5405 break; 5406 case CMD_SET_SUSPEND_OPT_ENABLED: 5407 if (message.arg1 == 1) { 5408 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 5409 mSuspendWakeLock.release(); 5410 } else { 5411 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 5412 } 5413 break; 5414 case CMD_SET_HIGH_PERF_MODE: 5415 if (message.arg1 == 1) { 5416 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 5417 } else { 5418 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 5419 } 5420 break; 5421 case CMD_ENABLE_TDLS: 5422 if (message.obj != null) { 5423 String remoteAddress = (String) message.obj; 5424 boolean enable = (message.arg1 == 1); 5425 mWifiNative.startTdls(remoteAddress, enable); 5426 } 5427 break; 5428 default: 5429 return NOT_HANDLED; 5430 } 5431 return HANDLED; 5432 } 5433 @Override 5434 public void exit() { 5435 mIsRunning = false; 5436 updateBatteryWorkSource(null); 5437 mScanResults = new ArrayList<ScanResult>(); 5438 5439 stopBatchedScan(); 5440 5441 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5442 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5443 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 5444 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5445 noteScanEnd(); // wrap up any pending request. 5446 mBufferedScanMsg.clear(); 5447 5448 mLastSetCountryCode = null; 5449 } 5450 } 5451 5452 class WaitForP2pDisableState extends State { 5453 private State mTransitionToState; 5454 @Override 5455 public void enter() { 5456 switch (getCurrentMessage().what) { 5457 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5458 mTransitionToState = mInitialState; 5459 break; 5460 case CMD_DELAYED_STOP_DRIVER: 5461 mTransitionToState = mDriverStoppingState; 5462 break; 5463 case CMD_STOP_SUPPLICANT: 5464 mTransitionToState = mSupplicantStoppingState; 5465 break; 5466 default: 5467 mTransitionToState = mDriverStoppingState; 5468 break; 5469 } 5470 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 5471 } 5472 @Override 5473 public boolean processMessage(Message message) { 5474 logStateAndMessage(message, getClass().getSimpleName()); 5475 5476 switch(message.what) { 5477 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 5478 transitionTo(mTransitionToState); 5479 break; 5480 /* Defer wifi start/shut and driver commands */ 5481 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5482 case CMD_START_SUPPLICANT: 5483 case CMD_STOP_SUPPLICANT: 5484 case CMD_START_AP: 5485 case CMD_STOP_AP: 5486 case CMD_START_DRIVER: 5487 case CMD_STOP_DRIVER: 5488 case CMD_SET_OPERATIONAL_MODE: 5489 case CMD_SET_COUNTRY_CODE: 5490 case CMD_SET_FREQUENCY_BAND: 5491 case CMD_START_PACKET_FILTERING: 5492 case CMD_STOP_PACKET_FILTERING: 5493 case CMD_START_SCAN: 5494 case CMD_DISCONNECT: 5495 case CMD_REASSOCIATE: 5496 case CMD_RECONNECT: 5497 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5498 deferMessage(message); 5499 break; 5500 default: 5501 return NOT_HANDLED; 5502 } 5503 return HANDLED; 5504 } 5505 } 5506 5507 class DriverStoppingState extends State { 5508 @Override 5509 public boolean processMessage(Message message) { 5510 logStateAndMessage(message, getClass().getSimpleName()); 5511 5512 switch(message.what) { 5513 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5514 SupplicantState state = handleSupplicantStateChange(message); 5515 if (state == SupplicantState.INTERFACE_DISABLED) { 5516 transitionTo(mDriverStoppedState); 5517 } 5518 break; 5519 /* Queue driver commands */ 5520 case CMD_START_DRIVER: 5521 case CMD_STOP_DRIVER: 5522 case CMD_SET_COUNTRY_CODE: 5523 case CMD_SET_FREQUENCY_BAND: 5524 case CMD_START_PACKET_FILTERING: 5525 case CMD_STOP_PACKET_FILTERING: 5526 case CMD_START_SCAN: 5527 case CMD_DISCONNECT: 5528 case CMD_REASSOCIATE: 5529 case CMD_RECONNECT: 5530 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5531 deferMessage(message); 5532 break; 5533 default: 5534 return NOT_HANDLED; 5535 } 5536 return HANDLED; 5537 } 5538 } 5539 5540 class DriverStoppedState extends State { 5541 @Override 5542 public boolean processMessage(Message message) { 5543 logStateAndMessage(message, getClass().getSimpleName()); 5544 switch (message.what) { 5545 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5546 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 5547 SupplicantState state = stateChangeResult.state; 5548 // A WEXT bug means that we can be back to driver started state 5549 // unexpectedly 5550 if (SupplicantState.isDriverActive(state)) { 5551 transitionTo(mDriverStartedState); 5552 } 5553 break; 5554 case CMD_START_DRIVER: 5555 mWakeLock.acquire(); 5556 mWifiNative.startDriver(); 5557 mWakeLock.release(); 5558 transitionTo(mDriverStartingState); 5559 break; 5560 default: 5561 return NOT_HANDLED; 5562 } 5563 return HANDLED; 5564 } 5565 } 5566 5567 class ScanModeState extends State { 5568 private int mLastOperationMode; 5569 @Override 5570 public void enter() { 5571 mLastOperationMode = mOperationalMode; 5572 } 5573 @Override 5574 public boolean processMessage(Message message) { 5575 logStateAndMessage(message, getClass().getSimpleName()); 5576 5577 switch(message.what) { 5578 case CMD_SET_OPERATIONAL_MODE: 5579 if (message.arg1 == CONNECT_MODE) { 5580 5581 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5582 setWifiState(WIFI_STATE_ENABLED); 5583 // Load and re-enable networks when going back to enabled state 5584 // This is essential for networks to show up after restore 5585 mWifiConfigStore.loadAndEnableAllNetworks(); 5586 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 5587 } else { 5588 mWifiConfigStore.enableAllNetworks(); 5589 } 5590 5591 mWifiNative.reconnect(); 5592 5593 mOperationalMode = CONNECT_MODE; 5594 transitionTo(mDisconnectedState); 5595 } else { 5596 // Nothing to do 5597 return HANDLED; 5598 } 5599 break; 5600 // Handle scan. All the connection related commands are 5601 // handled only in ConnectModeState 5602 case CMD_START_SCAN: 5603 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5604 break; 5605 default: 5606 return NOT_HANDLED; 5607 } 5608 return HANDLED; 5609 } 5610 } 5611 5612 5613 String smToString(Message message) { 5614 return smToString(message.what); 5615 } 5616 5617 String smToString(int what) { 5618 String s = "unknown"; 5619 switch (what) { 5620 case WifiMonitor.DRIVER_HUNG_EVENT: 5621 s = "DRIVER_HUNG_EVENT"; 5622 break; 5623 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 5624 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 5625 break; 5626 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 5627 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 5628 break; 5629 case CMD_SET_FREQUENCY_BAND: 5630 s = "CMD_SET_FREQUENCY_BAND"; 5631 break; 5632 case CMD_DELAYED_NETWORK_DISCONNECT: 5633 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 5634 break; 5635 case CMD_TEST_NETWORK_DISCONNECT: 5636 s = "CMD_TEST_NETWORK_DISCONNECT"; 5637 break; 5638 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5639 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 5640 break; 5641 case CMD_START_DRIVER: 5642 s = "CMD_START_DRIVER"; 5643 break; 5644 case CMD_STOP_DRIVER: 5645 s = "CMD_STOP_DRIVER"; 5646 break; 5647 case CMD_STOP_SUPPLICANT: 5648 s = "CMD_STOP_SUPPLICANT"; 5649 break; 5650 case CMD_STOP_SUPPLICANT_FAILED: 5651 s = "CMD_STOP_SUPPLICANT_FAILED"; 5652 break; 5653 case CMD_START_SUPPLICANT: 5654 s = "CMD_START_SUPPLICANT"; 5655 break; 5656 case CMD_REQUEST_AP_CONFIG: 5657 s = "CMD_REQUEST_AP_CONFIG"; 5658 break; 5659 case CMD_RESPONSE_AP_CONFIG: 5660 s = "CMD_RESPONSE_AP_CONFIG"; 5661 break; 5662 case CMD_TETHER_STATE_CHANGE: 5663 s = "CMD_TETHER_STATE_CHANGE"; 5664 break; 5665 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5666 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 5667 break; 5668 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5669 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 5670 break; 5671 case CMD_ADD_OR_UPDATE_NETWORK: 5672 s = "CMD_ADD_OR_UPDATE_NETWORK"; 5673 break; 5674 case CMD_REMOVE_NETWORK: 5675 s = "CMD_REMOVE_NETWORK"; 5676 break; 5677 case CMD_ENABLE_NETWORK: 5678 s = "CMD_ENABLE_NETWORK"; 5679 break; 5680 case CMD_ENABLE_ALL_NETWORKS: 5681 s = "CMD_ENABLE_ALL_NETWORKS"; 5682 break; 5683 case CMD_AUTO_CONNECT: 5684 s = "CMD_AUTO_CONNECT"; 5685 break; 5686 case CMD_AUTO_ROAM: 5687 s = "CMD_AUTO_ROAM"; 5688 break; 5689 case CMD_AUTO_SAVE_NETWORK: 5690 s = "CMD_AUTO_SAVE_NETWORK"; 5691 break; 5692 case CMD_BOOT_COMPLETED: 5693 s = "CMD_BOOT_COMPLETED"; 5694 break; 5695 case DhcpStateMachine.CMD_START_DHCP: 5696 s = "CMD_START_DHCP"; 5697 break; 5698 case DhcpStateMachine.CMD_STOP_DHCP: 5699 s = "CMD_STOP_DHCP"; 5700 break; 5701 case DhcpStateMachine.CMD_RENEW_DHCP: 5702 s = "CMD_RENEW_DHCP"; 5703 break; 5704 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5705 s = "CMD_PRE_DHCP_ACTION"; 5706 break; 5707 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5708 s = "CMD_POST_DHCP_ACTION"; 5709 break; 5710 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 5711 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 5712 break; 5713 case DhcpStateMachine.CMD_ON_QUIT: 5714 s = "CMD_ON_QUIT"; 5715 break; 5716 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5717 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 5718 break; 5719 case WifiManager.DISABLE_NETWORK: 5720 s = "WifiManager.DISABLE_NETWORK"; 5721 break; 5722 case CMD_BLACKLIST_NETWORK: 5723 s = "CMD_BLACKLIST_NETWORK"; 5724 break; 5725 case CMD_CLEAR_BLACKLIST: 5726 s = "CMD_CLEAR_BLACKLIST"; 5727 break; 5728 case CMD_SAVE_CONFIG: 5729 s = "CMD_SAVE_CONFIG"; 5730 break; 5731 case CMD_GET_CONFIGURED_NETWORKS: 5732 s = "CMD_GET_CONFIGURED_NETWORKS"; 5733 break; 5734 case CMD_GET_SUPPORTED_FEATURES: 5735 s = "CMD_GET_ADAPTORS"; 5736 break; 5737 case CMD_UNWANTED_NETWORK: 5738 s = "CMD_UNWANTED_NETWORK"; 5739 break; 5740 case CMD_GET_LINK_LAYER_STATS: 5741 s = "CMD_GET_LINK_LAYER_STATS"; 5742 break; 5743 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5744 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 5745 break; 5746 case CMD_DISCONNECT: 5747 s = "CMD_DISCONNECT"; 5748 break; 5749 case CMD_RECONNECT: 5750 s = "CMD_RECONNECT"; 5751 break; 5752 case CMD_REASSOCIATE: 5753 s = "CMD_REASSOCIATE"; 5754 break; 5755 case CMD_GET_CONNECTION_STATISTICS: 5756 s = "CMD_GET_CONNECTION_STATISTICS"; 5757 break; 5758 case CMD_SET_HIGH_PERF_MODE: 5759 s = "CMD_SET_HIGH_PERF_MODE"; 5760 break; 5761 case CMD_SET_COUNTRY_CODE: 5762 s = "CMD_SET_COUNTRY_CODE"; 5763 break; 5764 case CMD_ENABLE_RSSI_POLL: 5765 s = "CMD_ENABLE_RSSI_POLL"; 5766 break; 5767 case CMD_RSSI_POLL: 5768 s = "CMD_RSSI_POLL"; 5769 break; 5770 case CMD_START_PACKET_FILTERING: 5771 s = "CMD_START_PACKET_FILTERING"; 5772 break; 5773 case CMD_STOP_PACKET_FILTERING: 5774 s = "CMD_STOP_PACKET_FILTERING"; 5775 break; 5776 case CMD_SET_SUSPEND_OPT_ENABLED: 5777 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 5778 break; 5779 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5780 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 5781 break; 5782 case CMD_SET_BATCHED_SCAN: 5783 s = "CMD_SET_BATCHED_SCAN"; 5784 break; 5785 case CMD_START_NEXT_BATCHED_SCAN: 5786 s = "CMD_START_NEXT_BATCHED_SCAN"; 5787 break; 5788 case CMD_POLL_BATCHED_SCAN: 5789 s = "CMD_POLL_BATCHED_SCAN"; 5790 break; 5791 case CMD_UPDATE_LINKPROPERTIES: 5792 s = "CMD_UPDATE_LINKPROPERTIES"; 5793 break; 5794 case CMD_RELOAD_TLS_AND_RECONNECT: 5795 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 5796 break; 5797 case WifiManager.CONNECT_NETWORK: 5798 s = "CONNECT_NETWORK"; 5799 break; 5800 case WifiManager.SAVE_NETWORK: 5801 s = "SAVE_NETWORK"; 5802 break; 5803 case WifiManager.FORGET_NETWORK: 5804 s = "FORGET_NETWORK"; 5805 break; 5806 case WifiMonitor.SUP_CONNECTION_EVENT: 5807 s = "SUP_CONNECTION_EVENT"; 5808 break; 5809 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5810 s = "SUP_DISCONNECTION_EVENT"; 5811 break; 5812 case WifiMonitor.SCAN_RESULTS_EVENT: 5813 s = "SCAN_RESULTS_EVENT"; 5814 break; 5815 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5816 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 5817 break; 5818 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5819 s = "AUTHENTICATION_FAILURE_EVENT"; 5820 break; 5821 case WifiMonitor.SSID_TEMP_DISABLED: 5822 s = "SSID_TEMP_DISABLED"; 5823 break; 5824 case WifiMonitor.SSID_REENABLED: 5825 s = "SSID_REENABLED"; 5826 break; 5827 case WifiMonitor.WPS_SUCCESS_EVENT: 5828 s = "WPS_SUCCESS_EVENT"; 5829 break; 5830 case WifiMonitor.WPS_FAIL_EVENT: 5831 s = "WPS_FAIL_EVENT"; 5832 break; 5833 case WifiMonitor.SUP_REQUEST_IDENTITY: 5834 s = "SUP_REQUEST_IDENTITY"; 5835 break; 5836 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5837 s = "NETWORK_CONNECTION_EVENT"; 5838 break; 5839 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5840 s = "NETWORK_DISCONNECTION_EVENT"; 5841 break; 5842 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5843 s = "ASSOCIATION_REJECTION_EVENT"; 5844 break; 5845 case CMD_SET_OPERATIONAL_MODE: 5846 s = "CMD_SET_OPERATIONAL_MODE"; 5847 break; 5848 case CMD_START_SCAN: 5849 s = "CMD_START_SCAN"; 5850 break; 5851 case CMD_DISABLE_P2P_RSP: 5852 s = "CMD_DISABLE_P2P_RSP"; 5853 break; 5854 case CMD_DISABLE_P2P_REQ: 5855 s = "CMD_DISABLE_P2P_REQ"; 5856 break; 5857 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5858 s = "GOOD_LINK_DETECTED"; 5859 break; 5860 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5861 s = "POOR_LINK_DETECTED"; 5862 break; 5863 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 5864 s = "GROUP_CREATING_TIMED_OUT"; 5865 break; 5866 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5867 s = "P2P_CONNECTION_CHANGED"; 5868 break; 5869 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 5870 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 5871 break; 5872 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 5873 s = "P2P.SET_MIRACAST_MODE"; 5874 break; 5875 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 5876 s = "P2P.BLOCK_DISCOVERY"; 5877 break; 5878 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 5879 s = "P2P.SET_COUNTRY_CODE"; 5880 break; 5881 case WifiManager.CANCEL_WPS: 5882 s = "CANCEL_WPS"; 5883 break; 5884 case WifiManager.CANCEL_WPS_FAILED: 5885 s = "CANCEL_WPS_FAILED"; 5886 break; 5887 case WifiManager.CANCEL_WPS_SUCCEDED: 5888 s = "CANCEL_WPS_SUCCEDED"; 5889 break; 5890 case WifiManager.START_WPS: 5891 s = "START_WPS"; 5892 break; 5893 case WifiManager.START_WPS_SUCCEEDED: 5894 s = "START_WPS_SUCCEEDED"; 5895 break; 5896 case WifiManager.WPS_FAILED: 5897 s = "WPS_FAILED"; 5898 break; 5899 case WifiManager.WPS_COMPLETED: 5900 s = "WPS_COMPLETED"; 5901 break; 5902 case WifiManager.RSSI_PKTCNT_FETCH: 5903 s = "RSSI_PKTCNT_FETCH"; 5904 break; 5905 case CMD_IP_CONFIGURATION_LOST: 5906 s = "CMD_IP_CONFIGURATION_LOST"; 5907 break; 5908 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5909 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 5910 break; 5911 case CMD_STATIC_IP_SUCCESS: 5912 s = "CMD_STATIC_IP_SUCCESSFUL"; 5913 break; 5914 case CMD_STATIC_IP_FAILURE: 5915 s = "CMD_STATIC_IP_FAILURE"; 5916 break; 5917 case DhcpStateMachine.DHCP_SUCCESS: 5918 s = "DHCP_SUCCESS"; 5919 break; 5920 case DhcpStateMachine.DHCP_FAILURE: 5921 s = "DHCP_FAILURE"; 5922 break; 5923 case CMD_TARGET_BSSID: 5924 s = "CMD_TARGET_BSSID"; 5925 break; 5926 case CMD_ASSOCIATED_BSSID: 5927 s = "CMD_ASSOCIATED_BSSID"; 5928 break; 5929 case CMD_ROAM_WATCHDOG_TIMER: 5930 s = "CMD_ROAM_WATCHDOG_TIMER"; 5931 break; 5932 case CMD_SCREEN_STATE_CHANGED: 5933 s = "CMD_SCREEN_STATE_CHANGED"; 5934 break; 5935 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5936 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 5937 break; 5938 default: 5939 s = "what:" + Integer.toString(what); 5940 break; 5941 } 5942 return s; 5943 } 5944 5945 void registerConnected() { 5946 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 5947 long now_ms = System.currentTimeMillis(); 5948 // We are switching away from this configuration, 5949 // hence record the time we were connected last 5950 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 5951 if (config != null) { 5952 config.lastConnected = System.currentTimeMillis(); 5953 config.autoJoinBailedDueToLowRssi = false; 5954 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 5955 config.numConnectionFailures = 0; 5956 config.numIpConfigFailures = 0; 5957 config.numAuthFailures = 0; 5958 config.numAssociation++; 5959 } 5960 mBadLinkspeedcount = 0; 5961 } 5962 } 5963 5964 void registerDisconnected() { 5965 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 5966 long now_ms = System.currentTimeMillis(); 5967 // We are switching away from this configuration, 5968 // hence record the time we were connected last 5969 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 5970 if (config != null) { 5971 config.lastDisconnected = System.currentTimeMillis(); 5972 } 5973 } 5974 } 5975 5976 void noteWifiDisabledWhileAssociated() { 5977 // We got disabled by user while we were associated, make note of it 5978 int rssi = mWifiInfo.getRssi(); 5979 WifiConfiguration config = getCurrentWifiConfiguration(); 5980 if (getCurrentState() == mConnectedState 5981 && rssi != WifiInfo.INVALID_RSSI 5982 && config != null) { 5983 boolean is24GHz = mWifiInfo.is24GHz(); 5984 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24) 5985 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5); 5986 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24) 5987 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5); 5988 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24) 5989 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5); 5990 if (isBadRSSI) { 5991 // Take note that we got disabled while RSSI was Bad 5992 config.numUserTriggeredWifiDisableLowRSSI++; 5993 } else if (isLowRSSI) { 5994 // Take note that we got disabled while RSSI was Low 5995 config.numUserTriggeredWifiDisableBadRSSI++; 5996 } else if (!isHighRSSI) { 5997 // Take note that we got disabled while RSSI was Not high 5998 config.numUserTriggeredWifiDisableNotHighRSSI++; 5999 } 6000 } 6001 } 6002 6003 void setInternetAccessState(boolean enabled) { 6004 WifiConfiguration config = getCurrentWifiConfiguration(); 6005 if (config != null) { 6006 config.noInternetAccess = enabled; 6007 } 6008 } 6009 6010 WifiConfiguration getCurrentWifiConfiguration() { 6011 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6012 return null; 6013 } 6014 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6015 } 6016 6017 ScanResult getCurrentScanResult() { 6018 WifiConfiguration config = getCurrentWifiConfiguration(); 6019 if (config == null) { 6020 return null; 6021 } 6022 String BSSID = mWifiInfo.getBSSID(); 6023 if (BSSID == null) { 6024 BSSID = mTargetRoamBSSID; 6025 } 6026 if (config.scanResultCache == null) { 6027 return null; 6028 } 6029 return config.scanResultCache.get(BSSID); 6030 } 6031 6032 String getCurrentBSSID() { 6033 if (linkDebouncing) { 6034 return null; 6035 } 6036 return mLastBssid; 6037 } 6038 6039 class ConnectModeState extends State { 6040 @Override 6041 public boolean processMessage(Message message) { 6042 WifiConfiguration config; 6043 int netId; 6044 boolean ok; 6045 boolean didDisconnect; 6046 String bssid; 6047 String ssid; 6048 NetworkUpdateResult result; 6049 logStateAndMessage(message, getClass().getSimpleName()); 6050 6051 switch (message.what) { 6052 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6053 didBlackListBSSID = false; 6054 bssid = (String) message.obj; 6055 if (bssid == null || TextUtils.isEmpty(bssid)) { 6056 // If BSSID is null, use the target roam BSSID 6057 bssid = mTargetRoamBSSID; 6058 } 6059 if (bssid != null) { 6060 // If we have a BSSID, tell configStore to black list it 6061 synchronized(mScanResultCache) { 6062 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 6063 (mLastNetworkId, bssid, false); 6064 } 6065 } 6066 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6067 break; 6068 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6069 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6070 break; 6071 case WifiMonitor.SSID_TEMP_DISABLED: 6072 case WifiMonitor.SSID_REENABLED: 6073 String substr = (String) message.obj; 6074 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 6075 "temp-disabled" : "re-enabled"; 6076 loge("ConnectModeState SSID state=" + en + " nid=" 6077 + Integer.toString(message.arg1) + " [" + substr + "]"); 6078 synchronized(mScanResultCache) { 6079 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 6080 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 6081 } 6082 break; 6083 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6084 SupplicantState state = handleSupplicantStateChange(message); 6085 // A driver/firmware hang can now put the interface in a down state. 6086 // We detect the interface going down and recover from it 6087 if (!SupplicantState.isDriverActive(state)) { 6088 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6089 handleNetworkDisconnect(); 6090 } 6091 log("Detected an interface down, restart driver"); 6092 transitionTo(mDriverStoppedState); 6093 sendMessage(CMD_START_DRIVER); 6094 break; 6095 } 6096 6097 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 6098 // when authentication times out after a successful connection, 6099 // we can figure this from the supplicant state. If supplicant 6100 // state is DISCONNECTED, but the mNetworkInfo says we are not 6101 // disconnected, we need to handle a disconnection 6102 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 6103 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6104 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 6105 handleNetworkDisconnect(); 6106 transitionTo(mDisconnectedState); 6107 } 6108 break; 6109 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6110 if (message.arg1 == 1) { 6111 mWifiNative.disconnect(); 6112 mTemporarilyDisconnectWifi = true; 6113 } else { 6114 mWifiNative.reconnect(); 6115 mTemporarilyDisconnectWifi = false; 6116 } 6117 break; 6118 case CMD_ADD_OR_UPDATE_NETWORK: 6119 config = (WifiConfiguration) message.obj; 6120 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 6121 if (res < 0) { 6122 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6123 } else { 6124 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 6125 if (curConfig != null && config != null) { 6126 if (curConfig.priority < config.priority 6127 && config.status == WifiConfiguration.Status.ENABLED) { 6128 // Interpret this as a connect attempt 6129 // Set the last selected configuration so as to allow the system to 6130 // stick the last user choice without persisting the choice 6131 mWifiConfigStore.setLastSelectedConfiguration(res); 6132 6133 // Remember time of last connection attempt 6134 lastConnectAttempt = System.currentTimeMillis(); 6135 6136 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6137 6138 // As a courtesy to the caller, trigger a scan now 6139 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 6140 } 6141 } 6142 } 6143 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 6144 break; 6145 case CMD_REMOVE_NETWORK: 6146 ok = mWifiConfigStore.removeNetwork(message.arg1); 6147 if (!ok) { 6148 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6149 } 6150 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6151 break; 6152 case CMD_ENABLE_NETWORK: 6153 boolean others = message.arg2 == 1; 6154 // Tell autojoin the user did try to select to that network 6155 // However, do NOT persist the choice by bumping the priority of the network 6156 if (others) { 6157 mWifiAutoJoinController. 6158 updateConfigurationHistory(message.arg1, true, false); 6159 // Set the last selected configuration so as to allow the system to 6160 // stick the last user choice without persisting the choice 6161 mWifiConfigStore.setLastSelectedConfiguration(message.arg1); 6162 6163 // Remember time of last connection attempt 6164 lastConnectAttempt = System.currentTimeMillis(); 6165 6166 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6167 } 6168 // Cancel auto roam requests 6169 autoRoamSetBSSID(message.arg1, "any"); 6170 6171 ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1); 6172 if (!ok) { 6173 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6174 } 6175 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6176 break; 6177 case CMD_ENABLE_ALL_NETWORKS: 6178 long time = android.os.SystemClock.elapsedRealtime(); 6179 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 6180 mWifiConfigStore.enableAllNetworks(); 6181 mLastEnableAllNetworksTime = time; 6182 } 6183 break; 6184 case WifiManager.DISABLE_NETWORK: 6185 if (mWifiConfigStore.disableNetwork(message.arg1, 6186 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 6187 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 6188 } else { 6189 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6190 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 6191 WifiManager.ERROR); 6192 } 6193 break; 6194 case CMD_BLACKLIST_NETWORK: 6195 mWifiNative.addToBlacklist((String) message.obj); 6196 break; 6197 case CMD_CLEAR_BLACKLIST: 6198 mWifiNative.clearBlacklist(); 6199 break; 6200 case CMD_SAVE_CONFIG: 6201 ok = mWifiConfigStore.saveConfig(); 6202 6203 if (DBG) loge("wifistatemachine did save config " + ok); 6204 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 6205 6206 // Inform the backup manager about a data change 6207 IBackupManager ibm = IBackupManager.Stub.asInterface( 6208 ServiceManager.getService(Context.BACKUP_SERVICE)); 6209 if (ibm != null) { 6210 try { 6211 ibm.dataChanged("com.android.providers.settings"); 6212 } catch (Exception e) { 6213 // Try again later 6214 } 6215 } 6216 break; 6217 case CMD_GET_CONFIGURED_NETWORKS: 6218 replyToMessage(message, message.what, 6219 mWifiConfigStore.getConfiguredNetworks()); 6220 break; 6221 case WifiMonitor.SUP_REQUEST_IDENTITY: 6222 // Supplicant lacks credentials to connect to that network, hence black list 6223 ssid = (String) message.obj; 6224 6225 if (targetWificonfiguration != null && ssid != null 6226 && targetWificonfiguration.SSID != null 6227 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 6228 mWifiConfigStore.handleSSIDStateChange(targetWificonfiguration.networkId, 6229 false, "AUTH_FAILED no identity", null); 6230 } 6231 // Disconnect now, as we don't have any way to fullfill the supplicant request. 6232 mWifiConfigStore.setLastSelectedConfiguration 6233 (WifiConfiguration.INVALID_NETWORK_ID); 6234 mWifiNative.disconnect(); 6235 break; 6236 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 6237 logd("Received SUP_REQUEST_SIM_AUTH"); 6238 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 6239 if (requestData != null) { 6240 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 6241 handleGsmAuthRequest(requestData); 6242 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA) { 6243 handle3GAuthRequest(requestData); 6244 } 6245 } else { 6246 loge("Invalid sim auth request"); 6247 } 6248 break; 6249 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6250 replyToMessage(message, message.what, 6251 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 6252 break; 6253 /* Do a redundant disconnect without transition */ 6254 case CMD_DISCONNECT: 6255 mWifiConfigStore.setLastSelectedConfiguration 6256 (WifiConfiguration.INVALID_NETWORK_ID); 6257 mWifiNative.disconnect(); 6258 break; 6259 case CMD_RECONNECT: 6260 lastConnectAttempt = System.currentTimeMillis(); 6261 mWifiNative.reconnect(); 6262 break; 6263 case CMD_REASSOCIATE: 6264 lastConnectAttempt = System.currentTimeMillis(); 6265 mWifiNative.reassociate(); 6266 break; 6267 case CMD_RELOAD_TLS_AND_RECONNECT: 6268 if (mWifiConfigStore.needsUnlockedKeyStore()) { 6269 logd("Reconnecting to give a chance to un-connected TLS networks"); 6270 mWifiNative.disconnect(); 6271 lastConnectAttempt = System.currentTimeMillis(); 6272 mWifiNative.reconnect(); 6273 } 6274 break; 6275 case CMD_AUTO_ROAM: 6276 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 6277 return HANDLED; 6278 case CMD_AUTO_CONNECT: 6279 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 6280 * associated status to the STATUS command but somehow-someplace still thinks 6281 * it is associated and thus will ignore select/reconnect command with 6282 * following message: 6283 * "Already associated with the selected network - do nothing" 6284 * 6285 * Hence, sends a disconnect to supplicant first. 6286 */ 6287 didDisconnect = false; 6288 if (getCurrentState() != mDisconnectedState) { 6289 /** Supplicant will ignore the reconnect if we are currently associated, 6290 * hence trigger a disconnect 6291 */ 6292 didDisconnect = true; 6293 mWifiNative.disconnect(); 6294 } 6295 6296 /* connect command coming from auto-join */ 6297 config = (WifiConfiguration) message.obj; 6298 netId = message.arg1; 6299 int roam = message.arg2; 6300 loge("CMD_AUTO_CONNECT sup state " 6301 + mSupplicantStateTracker.getSupplicantStateName() 6302 + " my state " + getCurrentState().getName() 6303 + " nid=" + Integer.toString(netId) 6304 + " roam=" + Integer.toString(roam)); 6305 if (config == null) { 6306 loge("AUTO_CONNECT and no config, bail out..."); 6307 break; 6308 } 6309 6310 /* Make sure we cancel any previous roam request */ 6311 autoRoamSetBSSID(netId, config.BSSID); 6312 6313 /* Save the network config */ 6314 loge("CMD_AUTO_CONNECT will save config -> " + config.SSID 6315 + " nid=" + Integer.toString(netId)); 6316 result = mWifiConfigStore.saveNetwork(config, -1); 6317 netId = result.getNetworkId(); 6318 loge("CMD_AUTO_CONNECT did save config -> " 6319 + " nid=" + Integer.toString(netId)); 6320 6321 // Make sure the network is enabled, since supplicant will not reenable it 6322 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6323 6324 if (mWifiConfigStore.selectNetwork(netId) && 6325 mWifiNative.reconnect()) { 6326 lastConnectAttempt = System.currentTimeMillis(); 6327 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6328 // We selected a better config, 6329 // maybe because we could not see the last user 6330 // selection, then forget it. We will remember the selection 6331 // only if it was persisted. 6332 mWifiConfigStore. 6333 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6334 6335 mAutoRoaming = roam; 6336 if (isRoaming() || linkDebouncing) { 6337 transitionTo(mRoamingState); 6338 } else if (didDisconnect) { 6339 transitionTo(mDisconnectingState); 6340 } else { 6341 transitionTo(mDisconnectedState); 6342 } 6343 } else { 6344 loge("Failed to connect config: " + config + " netId: " + netId); 6345 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6346 WifiManager.ERROR); 6347 break; 6348 } 6349 break; 6350 case WifiManager.CONNECT_NETWORK: 6351 /** 6352 * The connect message can contain a network id passed as arg1 on message or 6353 * or a config passed as obj on message. 6354 * For a new network, a config is passed to create and connect. 6355 * For an existing network, a network id is passed 6356 */ 6357 netId = message.arg1; 6358 config = (WifiConfiguration) message.obj; 6359 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6360 6361 /* Save the network config */ 6362 if (config != null) { 6363 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 6364 netId = result.getNetworkId(); 6365 } 6366 config = mWifiConfigStore.getWifiConfiguration(netId); 6367 6368 if (config == null) { 6369 loge("CONNECT_NETWORK id=" + Integer.toString(netId) + " " 6370 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 6371 + getCurrentState().getName()); 6372 } else { 6373 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 6374 loge("CONNECT_NETWORK id=" + Integer.toString(netId) 6375 + " config=" + config.SSID 6376 + " cnid=" + config.networkId 6377 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 6378 + " my state " + getCurrentState().getName() 6379 + " uid = " + message.sendingUid 6380 + wasSkipped); 6381 } 6382 6383 autoRoamSetBSSID(netId, "any"); 6384 6385 if (message.sendingUid == Process.WIFI_UID 6386 || message.sendingUid == Process.SYSTEM_UID) { 6387 // As a sanity measure, clear the BSSID in the supplicant network block. 6388 // If system or Wifi Settings want to connect, they will not 6389 // specify the BSSID. 6390 // If an app however had added a BSSID to this configuration, and the BSSID 6391 // was wrong, Then we would forever fail to connect until that BSSID 6392 // is cleaned up. 6393 clearConfigBSSID(config, "CONNECT_NETWORK"); 6394 } 6395 6396 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 6397 6398 /* Tell autojoin the user did try to connect to that network */ 6399 mWifiAutoJoinController.updateConfigurationHistory(netId, true, true); 6400 6401 mWifiConfigStore.setLastSelectedConfiguration(netId); 6402 6403 didDisconnect = false; 6404 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 6405 && mLastNetworkId != netId) { 6406 /** Supplicant will ignore the reconnect if we are currently associated, 6407 * hence trigger a disconnect 6408 */ 6409 didDisconnect = true; 6410 mWifiNative.disconnect(); 6411 } 6412 6413 // Make sure the network is enabled, since supplicant will not reenable it 6414 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6415 6416 if (mWifiConfigStore.selectNetwork(netId) && 6417 mWifiNative.reconnect()) { 6418 lastConnectAttempt = System.currentTimeMillis(); 6419 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6420 6421 /* The state tracker handles enabling networks upon completion/failure */ 6422 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 6423 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 6424 if (didDisconnect) { 6425 /* Expect a disconnection from the old connection */ 6426 transitionTo(mDisconnectingState); 6427 } else { 6428 /** 6429 * Directly go to disconnected state where we 6430 * process the connection events from supplicant 6431 **/ 6432 transitionTo(mDisconnectedState); 6433 } 6434 } else { 6435 loge("Failed to connect config: " + config + " netId: " + netId); 6436 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6437 WifiManager.ERROR); 6438 break; 6439 } 6440 break; 6441 case WifiManager.SAVE_NETWORK: 6442 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6443 // Fall thru 6444 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 6445 lastSavedConfigurationAttempt = null; // Used for debug 6446 config = (WifiConfiguration) message.obj; 6447 if (config == null) { 6448 loge("ERROR: SAVE_NETWORK with null configuration" 6449 + mSupplicantStateTracker.getSupplicantStateName() 6450 + " my state " + getCurrentState().getName()); 6451 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6452 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 6453 WifiManager.ERROR); 6454 break; 6455 } 6456 lastSavedConfigurationAttempt = new WifiConfiguration(config); 6457 int nid = config.networkId; 6458 loge("SAVE_NETWORK id=" + Integer.toString(nid) 6459 + " config=" + config.SSID 6460 + " nid=" + config.networkId 6461 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 6462 + " my state " + getCurrentState().getName()); 6463 6464 result = mWifiConfigStore.saveNetwork(config, -1); 6465 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 6466 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 6467 if (result.hasIpChanged()) { 6468 // The currently connection configuration was changed 6469 // We switched from DHCP to static or from static to DHCP, or the 6470 // static IP address has changed. 6471 log("Reconfiguring IP on connection"); 6472 // TODO: clear addresses and disable IPv6 6473 // to simplify obtainingIpState. 6474 transitionTo(mObtainingIpState); 6475 } 6476 if (result.hasProxyChanged()) { 6477 log("Reconfiguring proxy on connection"); 6478 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 6479 } 6480 } 6481 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 6482 if (VDBG) { 6483 loge("Success save network nid=" 6484 + Integer.toString(result.getNetworkId())); 6485 } 6486 6487 synchronized(mScanResultCache) { 6488 /** 6489 * If the command comes from WifiManager, then 6490 * tell autojoin the user did try to modify and save that network, 6491 * and interpret the SAVE_NETWORK as a request to connect 6492 */ 6493 boolean user = message.what == WifiManager.SAVE_NETWORK; 6494 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 6495 , user, true); 6496 mWifiAutoJoinController.attemptAutoJoin(); 6497 } 6498 } else { 6499 loge("Failed to save network"); 6500 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6501 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 6502 WifiManager.ERROR); 6503 } 6504 break; 6505 case WifiManager.FORGET_NETWORK: 6506 // Debug only, remember last configuration that was forgotten 6507 WifiConfiguration toRemove 6508 = mWifiConfigStore.getWifiConfiguration(message.arg1); 6509 if (toRemove == null) { 6510 lastForgetConfigurationAttempt = null; 6511 } else { 6512 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 6513 } 6514 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 6515 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 6516 } else { 6517 loge("Failed to forget network"); 6518 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 6519 WifiManager.ERROR); 6520 } 6521 break; 6522 case WifiManager.START_WPS: 6523 WpsInfo wpsInfo = (WpsInfo) message.obj; 6524 WpsResult wpsResult; 6525 switch (wpsInfo.setup) { 6526 case WpsInfo.PBC: 6527 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 6528 break; 6529 case WpsInfo.KEYPAD: 6530 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 6531 break; 6532 case WpsInfo.DISPLAY: 6533 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 6534 break; 6535 default: 6536 wpsResult = new WpsResult(Status.FAILURE); 6537 loge("Invalid setup for WPS"); 6538 break; 6539 } 6540 mWifiConfigStore.setLastSelectedConfiguration 6541 (WifiConfiguration.INVALID_NETWORK_ID); 6542 if (wpsResult.status == Status.SUCCESS) { 6543 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 6544 transitionTo(mWpsRunningState); 6545 } else { 6546 loge("Failed to start WPS with config " + wpsInfo.toString()); 6547 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 6548 } 6549 break; 6550 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6551 if (DBG) log("Network connection established"); 6552 mLastNetworkId = message.arg1; 6553 mLastBssid = (String) message.obj; 6554 6555 mWifiInfo.setBSSID(mLastBssid); 6556 mWifiInfo.setNetworkId(mLastNetworkId); 6557 // Send event to CM & network change broadcast 6558 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 6559 sendNetworkStateChangeBroadcast(mLastBssid); 6560 transitionTo(mObtainingIpState); 6561 break; 6562 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6563 // Calling handleNetworkDisconnect here is redundant because we might already 6564 // have called it when leaving L2ConnectedState to go to disconnecting state 6565 // or thru other path 6566 // We should normally check the mWifiInfo or mLastNetworkId so as to check 6567 // if they are valid, and only in this case call handleNEtworkDisconnect, 6568 // TODO: this should be fixed for a L MR release 6569 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 6570 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 6571 // at the chip etc... 6572 if (DBG) log("ConnectModeState: Network connection lost "); 6573 handleNetworkDisconnect(); 6574 transitionTo(mDisconnectedState); 6575 break; 6576 default: 6577 return NOT_HANDLED; 6578 } 6579 return HANDLED; 6580 } 6581 } 6582 6583 private class WifiNetworkAgent extends NetworkAgent { 6584 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 6585 NetworkCapabilities nc, LinkProperties lp, int score) { 6586 super(l, c, TAG, ni, nc, lp, score); 6587 } 6588 protected void unwanted() { 6589 // Ignore if we're not the current networkAgent. 6590 if (this != mNetworkAgent) return; 6591 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 6592 + Integer.toString(mWifiInfo.score)); 6593 unwantedNetwork(network_status_unwanted_disconnect); 6594 } 6595 6596 protected void networkStatus(int status) { 6597 if (status == NetworkAgent.INVALID_NETWORK) { 6598 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid score " 6599 + Integer.toString(mWifiInfo.score)); 6600 unwantedNetwork(network_status_unwanted_disable_autojoin); 6601 } 6602 } 6603 } 6604 6605 void unwantedNetwork(int reason) { 6606 sendMessage(CMD_UNWANTED_NETWORK, reason); 6607 } 6608 6609 6610 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 6611 if (config == null) 6612 return false; 6613 6614 // We are still seeing a fairly high power consumption triggered by autojoin scans 6615 // Hence do partial scans only for PSK configuration that are roamable since the 6616 // primary purpose of the partial scans is roaming. 6617 // Full badn scans with exponential backoff for the purpose or extended roaming and 6618 // network switching are performed unconditionally. 6619 if (config.scanResultCache == null 6620 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 6621 || config.scanResultCache.size() > 6) { 6622 //return true but to not trigger the scan 6623 return true; 6624 } 6625 HashSet<Integer> channels 6626 = mWifiConfigStore.makeChannelList(config, 6627 ONE_HOUR_MILLI, restrictChannelList); 6628 if (channels != null && channels.size() != 0) { 6629 StringBuilder freqs = new StringBuilder(); 6630 boolean first = true; 6631 for (Integer channel : channels) { 6632 if (!first) 6633 freqs.append(","); 6634 freqs.append(channel.toString()); 6635 first = false; 6636 } 6637 //if (DBG) { 6638 loge("WifiStateMachine starting scan for " + config.configKey() + " with " + freqs); 6639 //} 6640 // Call wifi native to start the scan 6641 if (startScanNative( 6642 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 6643 freqs.toString())) { 6644 // Only count battery consumption if scan request is accepted 6645 noteScanStart(SCAN_ALARM_SOURCE, null); 6646 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 6647 } else { 6648 // used for debug only, mark scan as failed 6649 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 6650 } 6651 return true; 6652 } else { 6653 if (DBG) loge("WifiStateMachine no channels for " + config.configKey()); 6654 return false; 6655 } 6656 } 6657 6658 void clearCurrentConfigBSSID(String dbg) { 6659 // Clear the bssid in the current config's network block 6660 WifiConfiguration config = getCurrentWifiConfiguration(); 6661 if (config == null) 6662 return; 6663 clearConfigBSSID(config, dbg); 6664 } 6665 void clearConfigBSSID(WifiConfiguration config, String dbg) { 6666 if (config == null) 6667 return; 6668 if (DBG) { 6669 loge(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 6670 + " config.bssid " + config.BSSID); 6671 } 6672 config.autoJoinBSSID = "any"; 6673 config.BSSID = "any"; 6674 if (DBG) { 6675 loge(dbg + " " + config.SSID 6676 + " nid=" + Integer.toString(config.networkId)); 6677 } 6678 mWifiConfigStore.saveWifiConfigBSSID(config); 6679 } 6680 6681 class L2ConnectedState extends State { 6682 @Override 6683 public void enter() { 6684 mRssiPollToken++; 6685 if (mEnableRssiPolling) { 6686 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 6687 } 6688 if (mNetworkAgent != null) { 6689 loge("Have NetworkAgent when entering L2Connected"); 6690 setNetworkDetailedState(DetailedState.DISCONNECTED); 6691 } 6692 setNetworkDetailedState(DetailedState.CONNECTING); 6693 6694 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 6695 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 6696 } 6697 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 6698 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 6699 mLinkProperties, 60); 6700 6701 // We must clear the config BSSID, as the wifi chipset may decide to roam 6702 // from this point on and having the BSSID specified in the network block would 6703 // cause the roam to faile and the device to disconnect 6704 clearCurrentConfigBSSID("L2ConnectedState"); 6705 } 6706 6707 @Override 6708 public void exit() { 6709 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 6710 // Bug: 15347363 6711 // For paranoia's sake, call handleNetworkDisconnect 6712 // only if BSSID is null or last networkId 6713 // is not invalid. 6714 if (DBG) { 6715 StringBuilder sb = new StringBuilder(); 6716 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 6717 if (mLastBssid !=null) { 6718 sb.append(" ").append(mLastBssid); 6719 } 6720 } 6721 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6722 handleNetworkDisconnect(); 6723 } 6724 } 6725 6726 @Override 6727 public boolean processMessage(Message message) { 6728 logStateAndMessage(message, getClass().getSimpleName()); 6729 6730 switch (message.what) { 6731 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6732 handlePreDhcpSetup(); 6733 break; 6734 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6735 handlePostDhcpSetup(); 6736 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 6737 if (DBG) log("WifiStateMachine DHCP successful"); 6738 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 6739 // We advance to mVerifyingLinkState because handleIPv4Success will call 6740 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 6741 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 6742 if (DBG) { 6743 int count = -1; 6744 WifiConfiguration config = getCurrentWifiConfiguration(); 6745 if (config != null) { 6746 count = config.numConnectionFailures; 6747 } 6748 log("WifiStateMachine DHCP failure count=" + count); 6749 } 6750 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 6751 // As above, we transition to mDisconnectingState via updateLinkProperties. 6752 } 6753 break; 6754 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6755 handleSuccessfulIpConfiguration(); 6756 sendConnectedState(); 6757 transitionTo(mConnectedState); 6758 break; 6759 case CMD_IP_CONFIGURATION_LOST: 6760 handleIpConfigurationLost(); 6761 transitionTo(mDisconnectingState); 6762 break; 6763 case CMD_DISCONNECT: 6764 mWifiNative.disconnect(); 6765 transitionTo(mDisconnectingState); 6766 break; 6767 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6768 if (message.arg1 == 1) { 6769 mWifiNative.disconnect(); 6770 mTemporarilyDisconnectWifi = true; 6771 transitionTo(mDisconnectingState); 6772 } 6773 break; 6774 case CMD_SET_OPERATIONAL_MODE: 6775 if (message.arg1 != CONNECT_MODE) { 6776 sendMessage(CMD_DISCONNECT); 6777 deferMessage(message); 6778 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6779 noteWifiDisabledWhileAssociated(); 6780 } 6781 } 6782 break; 6783 case CMD_SET_COUNTRY_CODE: 6784 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6785 deferMessage(message); 6786 break; 6787 case CMD_START_SCAN: 6788 //if (DBG) { 6789 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 6790 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 6791 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 6792 + " targetRoamBSSID=" + mTargetRoamBSSID 6793 + " RSSI=" + mWifiInfo.getRssi()); 6794 //} 6795 if (message.arg1 == SCAN_ALARM_SOURCE) { 6796 boolean tryFullBandScan = false; 6797 boolean restrictChannelList = false; 6798 long now_ms = System.currentTimeMillis(); 6799 if (DBG) { 6800 loge("WifiStateMachine CMD_START_SCAN with age=" 6801 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 6802 + " interval=" + fullBandConnectedTimeIntervalMilli 6803 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 6804 } 6805 if (mWifiInfo != null) { 6806 if (mWifiConfigStore.enableFullBandScanWhenAssociated && 6807 (now_ms - lastFullBandConnectedTimeMilli) 6808 > fullBandConnectedTimeIntervalMilli) { 6809 if (DBG) { 6810 loge("WifiStateMachine CMD_START_SCAN try full band scan age=" 6811 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 6812 + " interval=" + fullBandConnectedTimeIntervalMilli 6813 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 6814 } 6815 tryFullBandScan = true; 6816 } 6817 6818 if (mWifiInfo.txSuccessRate > 6819 mWifiConfigStore.maxTxPacketForFullScans 6820 || mWifiInfo.rxSuccessRate > 6821 mWifiConfigStore.maxRxPacketForFullScans) { 6822 // Too much traffic at the interface, hence no full band scan 6823 if (DBG) { 6824 loge("WifiStateMachine CMD_START_SCAN " + 6825 "prevent full band scan due to pkt rate"); 6826 } 6827 tryFullBandScan = false; 6828 } 6829 6830 if (mWifiInfo.txSuccessRate > 6831 mWifiConfigStore.maxTxPacketForPartialScans 6832 || mWifiInfo.rxSuccessRate > 6833 mWifiConfigStore.maxRxPacketForPartialScans) { 6834 // Don't scan if lots of packets are being sent 6835 restrictChannelList = true; 6836 if (mWifiConfigStore.alwaysEnableScansWhileAssociated == 0) { 6837 if (DBG) { 6838 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 6839 + " ...and ignore scans" 6840 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 6841 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 6842 } 6843 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 6844 return HANDLED; 6845 } 6846 } 6847 } 6848 6849 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 6850 if (DBG) { 6851 loge("WifiStateMachine CMD_START_SCAN full=" + 6852 tryFullBandScan); 6853 } 6854 if (currentConfiguration != null) { 6855 if (fullBandConnectedTimeIntervalMilli 6856 < mWifiConfigStore.associatedPartialScanPeriodMilli) { 6857 // Sanity 6858 fullBandConnectedTimeIntervalMilli 6859 = mWifiConfigStore.associatedPartialScanPeriodMilli; 6860 } 6861 if (tryFullBandScan) { 6862 lastFullBandConnectedTimeMilli = now_ms; 6863 if (fullBandConnectedTimeIntervalMilli 6864 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 6865 // Increase the interval 6866 fullBandConnectedTimeIntervalMilli 6867 = fullBandConnectedTimeIntervalMilli 6868 * mWifiConfigStore.associatedFullScanBackoff / 8; 6869 6870 if (DBG) { 6871 loge("WifiStateMachine CMD_START_SCAN bump interval =" 6872 + fullBandConnectedTimeIntervalMilli); 6873 } 6874 } 6875 handleScanRequest( 6876 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6877 } else { 6878 if (!startScanForConfiguration( 6879 currentConfiguration, restrictChannelList)) { 6880 if (DBG) { 6881 loge("WifiStateMachine starting scan, " + 6882 " did not find channels -> full"); 6883 } 6884 lastFullBandConnectedTimeMilli = now_ms; 6885 if (fullBandConnectedTimeIntervalMilli 6886 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 6887 // Increase the interval 6888 fullBandConnectedTimeIntervalMilli 6889 = fullBandConnectedTimeIntervalMilli 6890 * mWifiConfigStore.associatedFullScanBackoff / 8; 6891 6892 if (DBG) { 6893 loge("WifiStateMachine CMD_START_SCAN bump interval =" 6894 + fullBandConnectedTimeIntervalMilli); 6895 } 6896 } 6897 handleScanRequest( 6898 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6899 } 6900 } 6901 } else { 6902 loge("CMD_START_SCAN : connected mode and no configuration"); 6903 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 6904 } 6905 } else { 6906 // Not scan alarm source 6907 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6908 } 6909 break; 6910 /* Ignore connection to same network */ 6911 case WifiManager.CONNECT_NETWORK: 6912 int netId = message.arg1; 6913 if (mWifiInfo.getNetworkId() == netId) { 6914 break; 6915 } 6916 return NOT_HANDLED; 6917 /* Ignore */ 6918 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6919 break; 6920 case CMD_RSSI_POLL: 6921 if (message.arg1 == mRssiPollToken) { 6922 if (mWifiConfigStore.enableChipWakeUpWhenAssociated) { 6923 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 6924 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 6925 if (stats != null) { 6926 // Sanity check the results provided by driver 6927 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 6928 && (stats.rssi_mgmt == 0 6929 || stats.beacon_rx == 0)) { 6930 stats = null; 6931 } 6932 } 6933 // Get Info and continue polling 6934 fetchRssiLinkSpeedAndFrequencyNative(); 6935 calculateWifiScore(stats); 6936 } 6937 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 6938 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 6939 6940 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 6941 } else { 6942 // Polling has completed 6943 } 6944 break; 6945 case CMD_ENABLE_RSSI_POLL: 6946 if (mWifiConfigStore.enableRssiPollWhenAssociated) { 6947 mEnableRssiPolling = (message.arg1 == 1); 6948 } else { 6949 mEnableRssiPolling = false; 6950 } 6951 mRssiPollToken++; 6952 if (mEnableRssiPolling) { 6953 // First poll 6954 fetchRssiLinkSpeedAndFrequencyNative(); 6955 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 6956 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 6957 } else { 6958 cleanWifiScore(); 6959 } 6960 break; 6961 case WifiManager.RSSI_PKTCNT_FETCH: 6962 RssiPacketCountInfo info = new RssiPacketCountInfo(); 6963 fetchRssiLinkSpeedAndFrequencyNative(); 6964 info.rssi = mWifiInfo.getRssi(); 6965 fetchPktcntNative(info); 6966 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 6967 break; 6968 case CMD_DELAYED_NETWORK_DISCONNECT: 6969 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 6970 6971 // Ignore if we are not debouncing 6972 loge("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 6973 + message.arg1); 6974 return HANDLED; 6975 } else { 6976 loge("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 6977 + message.arg1); 6978 6979 linkDebouncing = false; 6980 // If we are still debouncing while this message comes, 6981 // it means we were not able to reconnect within the alloted time 6982 // = LINK_FLAPPING_DEBOUNCE_MSEC 6983 // and thus, trigger a real disconnect 6984 handleNetworkDisconnect(); 6985 transitionTo(mDisconnectedState); 6986 } 6987 break; 6988 case CMD_ASSOCIATED_BSSID: 6989 if ((String) message.obj == null) { 6990 loge("Associated command w/o BSSID"); 6991 break; 6992 } 6993 mLastBssid = (String) message.obj; 6994 mWifiInfo.setBSSID((String) message.obj); 6995 break; 6996 default: 6997 return NOT_HANDLED; 6998 } 6999 7000 return HANDLED; 7001 } 7002 } 7003 7004 class ObtainingIpState extends State { 7005 @Override 7006 public void enter() { 7007 if (DBG) { 7008 String key = ""; 7009 if (getCurrentWifiConfiguration() != null) { 7010 key = getCurrentWifiConfiguration().configKey(); 7011 } 7012 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 7013 + " " + key + " " 7014 + " roam=" + mAutoRoaming 7015 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 7016 + " watchdog= " + obtainingIpWatchdogCount); 7017 } 7018 7019 // Reset link Debouncing, indicating we have successfully re-connected to the AP 7020 // We might still be roaming 7021 linkDebouncing = false; 7022 7023 // We must clear the config BSSID, as the wifi chipset may decide to roam 7024 // from this point on and having the BSSID specified in the network block would 7025 // cause the roam to faile and the device to disconnect 7026 clearCurrentConfigBSSID("ObtainingIpAddress"); 7027 7028 try { 7029 mNwService.enableIpv6(mInterfaceName); 7030 } catch (RemoteException re) { 7031 loge("Failed to enable IPv6: " + re); 7032 } catch (IllegalStateException e) { 7033 loge("Failed to enable IPv6: " + e); 7034 } 7035 7036 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 7037 if (isRoaming()) { 7038 renewDhcp(); 7039 } else { 7040 // Remove any IP address on the interface in case we're switching from static 7041 // IP configuration to DHCP. This is safe because if we get here when not 7042 // roaming, we don't have a usable address. 7043 clearIPv4Address(mInterfaceName); 7044 startDhcp(); 7045 } 7046 obtainingIpWatchdogCount++; 7047 loge("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 7048 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 7049 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 7050 } else { 7051 // stop any running dhcp before assigning static IP 7052 stopDhcp(); 7053 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 7054 mLastNetworkId); 7055 if (config.ipAddress == null) { 7056 loge("Static IP lacks address"); 7057 sendMessage(CMD_STATIC_IP_FAILURE); 7058 } else { 7059 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 7060 ifcg.setLinkAddress(config.ipAddress); 7061 ifcg.setInterfaceUp(); 7062 try { 7063 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 7064 if (DBG) log("Static IP configuration succeeded"); 7065 DhcpResults dhcpResults = new DhcpResults(config); 7066 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 7067 } catch (RemoteException re) { 7068 loge("Static IP configuration failed: " + re); 7069 sendMessage(CMD_STATIC_IP_FAILURE); 7070 } catch (IllegalStateException e) { 7071 loge("Static IP configuration failed: " + e); 7072 sendMessage(CMD_STATIC_IP_FAILURE); 7073 } 7074 } 7075 } 7076 } 7077 @Override 7078 public boolean processMessage(Message message) { 7079 logStateAndMessage(message, getClass().getSimpleName()); 7080 7081 switch(message.what) { 7082 case CMD_STATIC_IP_SUCCESS: 7083 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 7084 break; 7085 case CMD_STATIC_IP_FAILURE: 7086 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 7087 break; 7088 case CMD_AUTO_CONNECT: 7089 case CMD_AUTO_ROAM: 7090 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7091 break; 7092 case WifiManager.SAVE_NETWORK: 7093 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7094 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7095 deferMessage(message); 7096 break; 7097 /* Defer any power mode changes since we must keep active power mode at DHCP */ 7098 case CMD_SET_HIGH_PERF_MODE: 7099 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7100 deferMessage(message); 7101 break; 7102 /* Defer scan request since we should not switch to other channels at DHCP */ 7103 case CMD_START_SCAN: 7104 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7105 deferMessage(message); 7106 break; 7107 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 7108 if (message.arg1 == obtainingIpWatchdogCount) { 7109 loge("ObtainingIpAddress: Watchdog Triggered, count=" 7110 + obtainingIpWatchdogCount); 7111 handleIpConfigurationLost(); 7112 transitionTo(mDisconnectingState); 7113 break; 7114 } 7115 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7116 break; 7117 default: 7118 return NOT_HANDLED; 7119 } 7120 return HANDLED; 7121 } 7122 } 7123 7124 class VerifyingLinkState extends State { 7125 @Override 7126 public void enter() { 7127 log(getName() + " enter"); 7128 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 7129 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 7130 sendNetworkStateChangeBroadcast(mLastBssid); 7131 // End roaming 7132 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7133 } 7134 @Override 7135 public boolean processMessage(Message message) { 7136 logStateAndMessage(message, getClass().getSimpleName()); 7137 7138 switch (message.what) { 7139 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7140 // Stay here 7141 log(getName() + " POOR_LINK_DETECTED: no transition"); 7142 break; 7143 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 7144 log(getName() + " GOOD_LINK_DETECTED: transition to captive portal check"); 7145 7146 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 7147 sendConnectedState(); 7148 transitionTo(mConnectedState); 7149 break; 7150 default: 7151 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 7152 return NOT_HANDLED; 7153 } 7154 return HANDLED; 7155 } 7156 } 7157 7158 private void sendConnectedState() { 7159 // Send out a broadcast with the CAPTIVE_PORTAL_CHECK to preserve 7160 // existing behaviour. The captive portal check really happens after we 7161 // transition into DetailedState.CONNECTED. 7162 setNetworkDetailedState(DetailedState.CAPTIVE_PORTAL_CHECK); 7163 mWifiConfigStore.updateStatus(mLastNetworkId, 7164 DetailedState.CAPTIVE_PORTAL_CHECK); 7165 sendNetworkStateChangeBroadcast(mLastBssid); 7166 7167 if (mWifiConfigStore.getLastSelectedConfiguration() != null) { 7168 if (mNetworkAgent != null) mNetworkAgent.explicitlySelected(); 7169 } 7170 7171 setNetworkDetailedState(DetailedState.CONNECTED); 7172 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 7173 sendNetworkStateChangeBroadcast(mLastBssid); 7174 } 7175 7176 class RoamingState extends State { 7177 boolean mAssociated; 7178 @Override 7179 public void enter() { 7180 if (DBG) { 7181 log("RoamingState Enter" 7182 + " mScreenOn=" + mScreenOn ); 7183 } 7184 setScanAlarm(false, 0); 7185 7186 // Make sure we disconnect if roaming fails 7187 roamWatchdogCount++; 7188 loge("Start Roam Watchdog " + roamWatchdogCount); 7189 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 7190 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 7191 mAssociated = false; 7192 } 7193 @Override 7194 public boolean processMessage(Message message) { 7195 logStateAndMessage(message, getClass().getSimpleName()); 7196 7197 switch (message.what) { 7198 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7199 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 7200 return HANDLED; 7201 case CMD_UNWANTED_NETWORK: 7202 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 7203 return HANDLED; 7204 case CMD_SET_OPERATIONAL_MODE: 7205 if (message.arg1 != CONNECT_MODE) { 7206 deferMessage(message); 7207 } 7208 break; 7209 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7210 /** 7211 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 7212 * before NETWORK_DISCONNECTION_EVENT 7213 * And there is an associated BSSID corresponding to our target BSSID, then 7214 * we have missed the network disconnection, transition to mDisconnectedState 7215 * and handle the rest of the events there. 7216 */ 7217 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 7218 if (stateChangeResult.state == SupplicantState.DISCONNECTED 7219 || stateChangeResult.state == SupplicantState.INACTIVE 7220 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 7221 if (DBG) { 7222 log("STATE_CHANGE_EVENT in roaming state " 7223 + stateChangeResult.toString() ); 7224 } 7225 if (stateChangeResult.BSSID != null 7226 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 7227 handleNetworkDisconnect(); 7228 transitionTo(mDisconnectedState); 7229 } 7230 } 7231 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 7232 // We completed the layer2 roaming part 7233 mAssociated = true; 7234 if (stateChangeResult.BSSID != null) { 7235 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 7236 } 7237 } 7238 break; 7239 case CMD_ROAM_WATCHDOG_TIMER: 7240 if (roamWatchdogCount == message.arg1) { 7241 if (DBG) log("roaming watchdog! -> disconnect"); 7242 mRoamFailCount++; 7243 handleNetworkDisconnect(); 7244 mWifiNative.disconnect(); 7245 transitionTo(mDisconnectedState); 7246 } 7247 break; 7248 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7249 if (mAssociated) { 7250 if (DBG) log("roaming and Network connection established"); 7251 mLastNetworkId = message.arg1; 7252 mLastBssid = (String) message.obj; 7253 mWifiInfo.setBSSID(mLastBssid); 7254 mWifiInfo.setNetworkId(mLastNetworkId); 7255 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 7256 transitionTo(mObtainingIpState); 7257 } else { 7258 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7259 } 7260 break; 7261 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7262 // Throw away but only if it corresponds to the network we're roaming to 7263 String bssid = (String)message.obj; 7264 if (true) { 7265 String target = ""; 7266 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 7267 log("NETWORK_DISCONNECTION_EVENT in roaming state" 7268 + " BSSID=" + bssid 7269 + " target=" + target); 7270 } 7271 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 7272 handleNetworkDisconnect(); 7273 transitionTo(mDisconnectedState); 7274 } 7275 break; 7276 case WifiMonitor.SSID_TEMP_DISABLED: 7277 // Auth error while roaming 7278 loge("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 7279 + " id=" + Integer.toString(message.arg1) 7280 + " isRoaming=" + isRoaming() 7281 + " roam=" + Integer.toString(mAutoRoaming)); 7282 if (message.arg1 == mLastNetworkId) { 7283 handleNetworkDisconnect(); 7284 transitionTo(mDisconnectingState); 7285 } 7286 return NOT_HANDLED; 7287 case CMD_START_SCAN: 7288 deferMessage(message); 7289 break; 7290 default: 7291 return NOT_HANDLED; 7292 } 7293 return HANDLED; 7294 } 7295 7296 @Override 7297 public void exit() { 7298 loge("WifiStateMachine: Leaving Roaming state"); 7299 } 7300 } 7301 7302 class ConnectedState extends State { 7303 @Override 7304 public void enter() { 7305 String address; 7306 updateDefaultRouteMacAddress(1000); 7307 if (DBG) { 7308 log("ConnectedState Enter " 7309 + " mScreenOn=" + mScreenOn 7310 + " scanperiod=" 7311 + Integer.toString(mWifiConfigStore.associatedPartialScanPeriodMilli) ); 7312 } 7313 if (mScreenOn 7314 && mWifiConfigStore.enableAutoJoinScanWhenAssociated) { 7315 mCurrentScanAlarmMs = mWifiConfigStore.associatedPartialScanPeriodMilli; 7316 // Scan after 200ms 7317 setScanAlarm(true, 200); 7318 } else { 7319 mCurrentScanAlarmMs = 0; 7320 } 7321 registerConnected(); 7322 lastConnectAttempt = 0; 7323 targetWificonfiguration = null; 7324 // Paranoia 7325 linkDebouncing = false; 7326 7327 // Not roaming anymore 7328 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7329 7330 if (testNetworkDisconnect) { 7331 testNetworkDisconnectCounter++; 7332 loge("ConnectedState Enter start disconnect test " + 7333 testNetworkDisconnectCounter); 7334 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 7335 testNetworkDisconnectCounter, 0), 15000); 7336 } 7337 7338 // Reenable all networks, allow for hidden networks to be scanned 7339 mWifiConfigStore.enableAllNetworks(); 7340 7341 mLastDriverRoamAttempt = 0; 7342 } 7343 @Override 7344 public boolean processMessage(Message message) { 7345 WifiConfiguration config = null; 7346 logStateAndMessage(message, getClass().getSimpleName()); 7347 7348 switch (message.what) { 7349 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7350 if (DBG) log("Watchdog reports poor link"); 7351 transitionTo(mVerifyingLinkState); 7352 break; 7353 case CMD_UNWANTED_NETWORK: 7354 if (message.arg1 == network_status_unwanted_disconnect) { 7355 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 7356 mWifiNative.disconnect(); 7357 transitionTo(mDisconnectingState); 7358 } else if (message.arg1 == network_status_unwanted_disable_autojoin) { 7359 config = getCurrentWifiConfiguration(); 7360 if (config != null) { 7361 // Disable autojoin 7362 config.noInternetAccess = true; 7363 } 7364 } 7365 return HANDLED; 7366 case CMD_TEST_NETWORK_DISCONNECT: 7367 // Force a disconnect 7368 if (message.arg1 == testNetworkDisconnectCounter) { 7369 mWifiNative.disconnect(); 7370 } 7371 break; 7372 case CMD_ASSOCIATED_BSSID: 7373 // ASSOCIATING to a new BSSID while already connected, indicates 7374 // that driver is roaming 7375 mLastDriverRoamAttempt = System.currentTimeMillis(); 7376 String toBSSID = (String)message.obj; 7377 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 7378 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 7379 } 7380 return NOT_HANDLED; 7381 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7382 long lastRoam = 0; 7383 if (mLastDriverRoamAttempt != 0) { 7384 // Calculate time since last driver roam attempt 7385 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 7386 mLastDriverRoamAttempt = 0; 7387 } 7388 config = getCurrentWifiConfiguration(); 7389 if (mScreenOn 7390 && !linkDebouncing 7391 && config != null 7392 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 7393 && !mWifiConfigStore.isLastSelectedConfiguration(config) 7394 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 7395 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 7396 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 7397 && mWifiInfo.getRssi() > 7398 WifiConfiguration.BAD_RSSI_24) 7399 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 7400 && mWifiInfo.getRssi() > 7401 WifiConfiguration.BAD_RSSI_5))) { 7402 // Start de-bouncing the L2 disconnection: 7403 // this L2 disconnection might be spurious. 7404 // Hence we allow 7 seconds for the state machine to try 7405 // to reconnect, go thru the 7406 // roaming cycle and enter Obtaining IP address 7407 // before signalling the disconnect to ConnectivityService and L3 7408 startScanForConfiguration(getCurrentWifiConfiguration(), false); 7409 linkDebouncing = true; 7410 7411 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 7412 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 7413 if (DBG) { 7414 log("NETWORK_DISCONNECTION_EVENT in connected state" 7415 + " BSSID=" + mWifiInfo.getBSSID() 7416 + " RSSI=" + mWifiInfo.getRssi() 7417 + " freq=" + mWifiInfo.getFrequency() 7418 + " reason=" + message.arg2 7419 + " -> debounce"); 7420 } 7421 return HANDLED; 7422 } else { 7423 if (DBG) { 7424 int ajst = -1; 7425 if (config != null) ajst = config.autoJoinStatus; 7426 log("NETWORK_DISCONNECTION_EVENT in connected state" 7427 + " BSSID=" + mWifiInfo.getBSSID() 7428 + " RSSI=" + mWifiInfo.getRssi() 7429 + " freq=" + mWifiInfo.getFrequency() 7430 + " was debouncing=" + linkDebouncing 7431 + " reason=" + message.arg2 7432 + " ajst=" + ajst); 7433 } 7434 } 7435 break; 7436 case CMD_AUTO_ROAM: 7437 // Clear the driver roam indication since we are attempting a framerwork roam 7438 mLastDriverRoamAttempt = 0; 7439 7440 /* Connect command coming from auto-join */ 7441 ScanResult candidate = (ScanResult)message.obj; 7442 String bssid = "any"; 7443 if (candidate != null && candidate.is5GHz()) { 7444 // Only lock BSSID for 5GHz networks 7445 bssid = candidate.BSSID; 7446 } 7447 int netId = mLastNetworkId; 7448 config = getCurrentWifiConfiguration(); 7449 7450 7451 if (config == null) { 7452 loge("AUTO_ROAM and no config, bail out..."); 7453 break; 7454 } 7455 7456 loge("CMD_AUTO_ROAM sup state " 7457 + mSupplicantStateTracker.getSupplicantStateName() 7458 + " my state " + getCurrentState().getName() 7459 + " nid=" + Integer.toString(netId) 7460 + " config " + config.configKey() 7461 + " roam=" + Integer.toString(message.arg2) 7462 + " to " + bssid 7463 + " targetRoamBSSID " + mTargetRoamBSSID); 7464 7465 /* Save the BSSID so as to lock it @ firmware */ 7466 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 7467 loge("AUTO_ROAM nothing to do"); 7468 // Same BSSID, nothing to do 7469 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7470 break; 7471 }; 7472 7473 // Make sure the network is enabled, since supplicant will not reenable it 7474 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7475 7476 boolean ret = false; 7477 if (mLastNetworkId != netId) { 7478 if (mWifiConfigStore.selectNetwork(netId) && 7479 mWifiNative.reconnect()) { 7480 ret = true; 7481 } 7482 } else { 7483 ret = mWifiNative.reassociate(); 7484 } 7485 if (ret) { 7486 lastConnectAttempt = System.currentTimeMillis(); 7487 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7488 7489 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7490 mAutoRoaming = message.arg2; 7491 transitionTo(mRoamingState); 7492 7493 } else { 7494 loge("Failed to connect config: " + config + " netId: " + netId); 7495 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7496 WifiManager.ERROR); 7497 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7498 break; 7499 } 7500 break; 7501 default: 7502 return NOT_HANDLED; 7503 } 7504 return HANDLED; 7505 } 7506 7507 @Override 7508 public void exit() { 7509 loge("WifiStateMachine: Leaving Connected state"); 7510 setScanAlarm(false, 0); 7511 mLastDriverRoamAttempt = 0; 7512 } 7513 } 7514 7515 class DisconnectingState extends State { 7516 7517 @Override 7518 public void enter() { 7519 mCurrentScanAlarmMs = mDisconnectedScanPeriodMs; 7520 7521 if (PDBG) { 7522 loge(" Enter DisconnectingState State scan interval " + mFrameworkScanIntervalMs 7523 + " mEnableBackgroundScan= " + mEnableBackgroundScan 7524 + " screenOn=" + mScreenOn); 7525 } 7526 7527 // Make sure we disconnect: we enter this state prior connecting to a new 7528 // network, waiting for either a DISCONECT event or a SUPPLICANT_STATE_CHANGE 7529 // event which in this case will be indicating that supplicant started to associate. 7530 // In some cases supplicant doesn't ignore the connect requests (it might not 7531 // find the target SSID in its cache), 7532 // Therefore we end up stuck that state, hence the need for the watchdog. 7533 disconnectingWatchdogCount++; 7534 loge("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 7535 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 7536 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 7537 } 7538 7539 @Override 7540 public boolean processMessage(Message message) { 7541 logStateAndMessage(message, getClass().getSimpleName()); 7542 switch (message.what) { 7543 case CMD_SET_OPERATIONAL_MODE: 7544 if (message.arg1 != CONNECT_MODE) { 7545 deferMessage(message); 7546 } 7547 break; 7548 case CMD_START_SCAN: 7549 // Ignore scans while disconnecting 7550 return HANDLED; 7551 case CMD_DISCONNECTING_WATCHDOG_TIMER: 7552 if (disconnectingWatchdogCount == message.arg1) { 7553 if (DBG) log("disconnecting watchdog! -> disconnect"); 7554 handleNetworkDisconnect(); 7555 transitionTo(mDisconnectedState); 7556 } 7557 break; 7558 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7559 /** 7560 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 7561 * we have missed the network disconnection, transition to mDisconnectedState 7562 * and handle the rest of the events there 7563 */ 7564 deferMessage(message); 7565 handleNetworkDisconnect(); 7566 transitionTo(mDisconnectedState); 7567 break; 7568 default: 7569 return NOT_HANDLED; 7570 } 7571 return HANDLED; 7572 } 7573 7574 @Override 7575 public void exit() { 7576 mCurrentScanAlarmMs = 0; 7577 } 7578 } 7579 7580 class DisconnectedState extends State { 7581 @Override 7582 public void enter() { 7583 // We dont scan frequently if this is a temporary disconnect 7584 // due to p2p 7585 if (mTemporarilyDisconnectWifi) { 7586 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 7587 return; 7588 } 7589 7590 // Loose the last selection choice 7591 // mWifiAutoJoinController.setLastSelectedConfiguration 7592 // (WifiConfiguration.INVALID_NETWORK_ID); 7593 7594 mFrameworkScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 7595 Settings.Global.WIFI_FRAMEWORK_SCAN_INTERVAL_MS, 7596 mDefaultFrameworkScanIntervalMs); 7597 7598 if (mScreenOn) 7599 mCurrentScanAlarmMs = mDisconnectedScanPeriodMs; 7600 7601 if (PDBG) { 7602 loge(" Enter disconnected State scan interval " + mFrameworkScanIntervalMs 7603 + " mEnableBackgroundScan= " + mEnableBackgroundScan 7604 + " screenOn=" + mScreenOn); 7605 } 7606 7607 /** clear the roaming state, if we were roaming, we failed */ 7608 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7609 7610 // Reenable all networks, allow for hidden networks to be scanned 7611 mWifiConfigStore.enableAllNetworks(); 7612 7613 /** 7614 * - screen dark and PNO supported => scan alarm disabled 7615 * - everything else => scan alarm enabled with mDefaultFrameworkScanIntervalMs period 7616 */ 7617 if ((mScreenOn == false) && mEnableBackgroundScan) { //mEnableBackgroundScan) { 7618 /* If a regular scan result is pending, do not initiate background 7619 * scan until the scan results are returned. This is needed because 7620 * initiating a background scan will cancel the regular scan and 7621 * scan results will not be returned until background scanning is 7622 * cleared 7623 */ 7624 if (!mIsScanOngoing) { 7625 mWifiNative.enableBackgroundScan(true); 7626 } 7627 } else { 7628 setScanAlarm(true, 200); 7629 } 7630 7631 /** 7632 * If we have no networks saved, the supplicant stops doing the periodic scan. 7633 * The scans are useful to notify the user of the presence of an open network. 7634 * Note that these are not wake up scans. 7635 */ 7636 if (!mP2pConnected.get() && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 7637 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 7638 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 7639 } 7640 7641 mDisconnectedTimeStamp = System.currentTimeMillis(); 7642 7643 } 7644 @Override 7645 public boolean processMessage(Message message) { 7646 boolean ret = HANDLED; 7647 7648 logStateAndMessage(message, getClass().getSimpleName()); 7649 7650 switch (message.what) { 7651 case CMD_NO_NETWORKS_PERIODIC_SCAN: 7652 if (mP2pConnected.get()) break; 7653 if (message.arg1 == mPeriodicScanToken && 7654 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 7655 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 7656 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 7657 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 7658 } 7659 break; 7660 case WifiManager.FORGET_NETWORK: 7661 case CMD_REMOVE_NETWORK: 7662 // Set up a delayed message here. After the forget/remove is handled 7663 // the handled delayed message will determine if there is a need to 7664 // scan and continue 7665 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 7666 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 7667 ret = NOT_HANDLED; 7668 break; 7669 case CMD_SET_OPERATIONAL_MODE: 7670 if (message.arg1 != CONNECT_MODE) { 7671 mOperationalMode = message.arg1; 7672 7673 mWifiConfigStore.disableAllNetworks(); 7674 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 7675 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 7676 setWifiState(WIFI_STATE_DISABLED); 7677 } 7678 7679 transitionTo(mScanModeState); 7680 } 7681 break; 7682 /* Ignore network disconnect */ 7683 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7684 break; 7685 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7686 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 7687 if (DBG) { 7688 loge("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 7689 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 7690 + " debouncing=" + linkDebouncing); 7691 } 7692 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 7693 /* ConnectModeState does the rest of the handling */ 7694 ret = NOT_HANDLED; 7695 break; 7696 case CMD_START_SCAN: 7697 if (!isScanAllowed()) { 7698 // Ignore the scan request 7699 return HANDLED; 7700 } 7701 /* Disable background scan temporarily during a regular scan */ 7702 if (mEnableBackgroundScan) { 7703 mWifiNative.enableBackgroundScan(false); 7704 } 7705 /* Handled in parent state */ 7706 ret = NOT_HANDLED; 7707 break; 7708 case WifiMonitor.SCAN_RESULTS_EVENT: 7709 /* Re-enable background scan when a pending scan result is received */ 7710 if (mEnableBackgroundScan && mIsScanOngoing) { 7711 mWifiNative.enableBackgroundScan(true); 7712 } 7713 /* Handled in parent state */ 7714 ret = NOT_HANDLED; 7715 break; 7716 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 7717 NetworkInfo info = (NetworkInfo) message.obj; 7718 mP2pConnected.set(info.isConnected()); 7719 if (mP2pConnected.get()) { 7720 int defaultInterval = mContext.getResources().getInteger( 7721 R.integer.config_wifi_scan_interval_p2p_connected); 7722 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 7723 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 7724 defaultInterval); 7725 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 7726 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 7727 if (DBG) log("Turn on scanning after p2p disconnected"); 7728 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 7729 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 7730 } 7731 case CMD_RECONNECT: 7732 case CMD_REASSOCIATE: 7733 if (mTemporarilyDisconnectWifi) { 7734 // Drop a third party reconnect/reassociate if STA is 7735 // temporarily disconnected for p2p 7736 break; 7737 } else { 7738 // ConnectModeState handles it 7739 ret = NOT_HANDLED; 7740 } 7741 break; 7742 case CMD_SCREEN_STATE_CHANGED: 7743 handleScreenStateChanged(message.arg1 != 0, 7744 /* startBackgroundScanIfNeeded = */ true); 7745 break; 7746 default: 7747 ret = NOT_HANDLED; 7748 } 7749 return ret; 7750 } 7751 7752 @Override 7753 public void exit() { 7754 /* No need for a background scan upon exit from a disconnected state */ 7755 if (mEnableBackgroundScan) { 7756 mWifiNative.enableBackgroundScan(false); 7757 } 7758 mCurrentScanAlarmMs = 0; 7759 setScanAlarm(false, 0); 7760 } 7761 } 7762 7763 class WpsRunningState extends State { 7764 // Tracks the source to provide a reply 7765 private Message mSourceMessage; 7766 @Override 7767 public void enter() { 7768 mSourceMessage = Message.obtain(getCurrentMessage()); 7769 } 7770 @Override 7771 public boolean processMessage(Message message) { 7772 logStateAndMessage(message, getClass().getSimpleName()); 7773 7774 switch (message.what) { 7775 case WifiMonitor.WPS_SUCCESS_EVENT: 7776 // Ignore intermediate success, wait for full connection 7777 break; 7778 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7779 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 7780 mSourceMessage.recycle(); 7781 mSourceMessage = null; 7782 deferMessage(message); 7783 transitionTo(mDisconnectedState); 7784 break; 7785 case WifiMonitor.WPS_OVERLAP_EVENT: 7786 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 7787 WifiManager.WPS_OVERLAP_ERROR); 7788 mSourceMessage.recycle(); 7789 mSourceMessage = null; 7790 transitionTo(mDisconnectedState); 7791 break; 7792 case WifiMonitor.WPS_FAIL_EVENT: 7793 // Arg1 has the reason for the failure 7794 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 7795 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 7796 mSourceMessage.recycle(); 7797 mSourceMessage = null; 7798 transitionTo(mDisconnectedState); 7799 } else { 7800 if (DBG) log("Ignore unspecified fail event during WPS connection"); 7801 } 7802 break; 7803 case WifiMonitor.WPS_TIMEOUT_EVENT: 7804 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 7805 WifiManager.WPS_TIMED_OUT); 7806 mSourceMessage.recycle(); 7807 mSourceMessage = null; 7808 transitionTo(mDisconnectedState); 7809 break; 7810 case WifiManager.START_WPS: 7811 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 7812 break; 7813 case WifiManager.CANCEL_WPS: 7814 if (mWifiNative.cancelWps()) { 7815 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 7816 } else { 7817 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 7818 } 7819 transitionTo(mDisconnectedState); 7820 break; 7821 /** 7822 * Defer all commands that can cause connections to a different network 7823 * or put the state machine out of connect mode 7824 */ 7825 case CMD_STOP_DRIVER: 7826 case CMD_SET_OPERATIONAL_MODE: 7827 case WifiManager.CONNECT_NETWORK: 7828 case CMD_ENABLE_NETWORK: 7829 case CMD_RECONNECT: 7830 case CMD_REASSOCIATE: 7831 deferMessage(message); 7832 break; 7833 case CMD_AUTO_CONNECT: 7834 case CMD_AUTO_ROAM: 7835 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7836 return HANDLED; 7837 case CMD_START_SCAN: 7838 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7839 return HANDLED; 7840 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7841 if (DBG) log("Network connection lost"); 7842 handleNetworkDisconnect(); 7843 break; 7844 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 7845 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 7846 break; 7847 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 7848 // Disregard auth failure events during WPS connection. The 7849 // EAP sequence is retried several times, and there might be 7850 // failures (especially for wps pin). We will get a WPS_XXX 7851 // event at the end of the sequence anyway. 7852 if (DBG) log("Ignore auth failure during WPS connection"); 7853 break; 7854 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7855 // Throw away supplicant state changes when WPS is running. 7856 // We will start getting supplicant state changes once we get 7857 // a WPS success or failure 7858 break; 7859 default: 7860 return NOT_HANDLED; 7861 } 7862 return HANDLED; 7863 } 7864 7865 @Override 7866 public void exit() { 7867 mWifiConfigStore.enableAllNetworks(); 7868 mWifiConfigStore.loadConfiguredNetworks(); 7869 } 7870 } 7871 7872 class SoftApStartingState extends State { 7873 @Override 7874 public void enter() { 7875 final Message message = getCurrentMessage(); 7876 if (message.what == CMD_START_AP) { 7877 final WifiConfiguration config = (WifiConfiguration) message.obj; 7878 7879 if (config == null) { 7880 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 7881 } else { 7882 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 7883 startSoftApWithConfig(config); 7884 } 7885 } else { 7886 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 7887 } 7888 } 7889 @Override 7890 public boolean processMessage(Message message) { 7891 logStateAndMessage(message, getClass().getSimpleName()); 7892 7893 switch(message.what) { 7894 case CMD_START_SUPPLICANT: 7895 case CMD_STOP_SUPPLICANT: 7896 case CMD_START_AP: 7897 case CMD_STOP_AP: 7898 case CMD_START_DRIVER: 7899 case CMD_STOP_DRIVER: 7900 case CMD_SET_OPERATIONAL_MODE: 7901 case CMD_SET_COUNTRY_CODE: 7902 case CMD_SET_FREQUENCY_BAND: 7903 case CMD_START_PACKET_FILTERING: 7904 case CMD_STOP_PACKET_FILTERING: 7905 case CMD_TETHER_STATE_CHANGE: 7906 deferMessage(message); 7907 break; 7908 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 7909 WifiConfiguration config = (WifiConfiguration) message.obj; 7910 if (config != null) { 7911 startSoftApWithConfig(config); 7912 } else { 7913 loge("Softap config is null!"); 7914 sendMessage(CMD_START_AP_FAILURE); 7915 } 7916 break; 7917 case CMD_START_AP_SUCCESS: 7918 setWifiApState(WIFI_AP_STATE_ENABLED); 7919 transitionTo(mSoftApStartedState); 7920 break; 7921 case CMD_START_AP_FAILURE: 7922 setWifiApState(WIFI_AP_STATE_FAILED); 7923 transitionTo(mInitialState); 7924 break; 7925 default: 7926 return NOT_HANDLED; 7927 } 7928 return HANDLED; 7929 } 7930 } 7931 7932 class SoftApStartedState extends State { 7933 @Override 7934 public boolean processMessage(Message message) { 7935 logStateAndMessage(message, getClass().getSimpleName()); 7936 7937 switch(message.what) { 7938 case CMD_STOP_AP: 7939 if (DBG) log("Stopping Soft AP"); 7940 /* We have not tethered at this point, so we just shutdown soft Ap */ 7941 try { 7942 mNwService.stopAccessPoint(mInterfaceName); 7943 } catch(Exception e) { 7944 loge("Exception in stopAccessPoint()"); 7945 } 7946 setWifiApState(WIFI_AP_STATE_DISABLED); 7947 transitionTo(mInitialState); 7948 break; 7949 case CMD_START_AP: 7950 // Ignore a start on a running access point 7951 break; 7952 // Fail client mode operation when soft AP is enabled 7953 case CMD_START_SUPPLICANT: 7954 loge("Cannot start supplicant with a running soft AP"); 7955 setWifiState(WIFI_STATE_UNKNOWN); 7956 break; 7957 case CMD_TETHER_STATE_CHANGE: 7958 TetherStateChange stateChange = (TetherStateChange) message.obj; 7959 if (startTethering(stateChange.available)) { 7960 transitionTo(mTetheringState); 7961 } 7962 break; 7963 default: 7964 return NOT_HANDLED; 7965 } 7966 return HANDLED; 7967 } 7968 } 7969 7970 class TetheringState extends State { 7971 @Override 7972 public void enter() { 7973 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 7974 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 7975 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 7976 } 7977 @Override 7978 public boolean processMessage(Message message) { 7979 logStateAndMessage(message, getClass().getSimpleName()); 7980 7981 switch(message.what) { 7982 case CMD_TETHER_STATE_CHANGE: 7983 TetherStateChange stateChange = (TetherStateChange) message.obj; 7984 if (isWifiTethered(stateChange.active)) { 7985 transitionTo(mTetheredState); 7986 } 7987 return HANDLED; 7988 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 7989 if (message.arg1 == mTetherToken) { 7990 loge("Failed to get tether update, shutdown soft access point"); 7991 transitionTo(mSoftApStartedState); 7992 // Needs to be first thing handled 7993 sendMessageAtFrontOfQueue(CMD_STOP_AP); 7994 } 7995 break; 7996 case CMD_START_SUPPLICANT: 7997 case CMD_STOP_SUPPLICANT: 7998 case CMD_START_AP: 7999 case CMD_STOP_AP: 8000 case CMD_START_DRIVER: 8001 case CMD_STOP_DRIVER: 8002 case CMD_SET_OPERATIONAL_MODE: 8003 case CMD_SET_COUNTRY_CODE: 8004 case CMD_SET_FREQUENCY_BAND: 8005 case CMD_START_PACKET_FILTERING: 8006 case CMD_STOP_PACKET_FILTERING: 8007 deferMessage(message); 8008 break; 8009 default: 8010 return NOT_HANDLED; 8011 } 8012 return HANDLED; 8013 } 8014 } 8015 8016 class TetheredState extends State { 8017 @Override 8018 public boolean processMessage(Message message) { 8019 logStateAndMessage(message, getClass().getSimpleName()); 8020 8021 switch(message.what) { 8022 case CMD_TETHER_STATE_CHANGE: 8023 TetherStateChange stateChange = (TetherStateChange) message.obj; 8024 if (!isWifiTethered(stateChange.active)) { 8025 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 8026 setHostApRunning(null, false); 8027 setHostApRunning(null, true); 8028 } 8029 return HANDLED; 8030 case CMD_STOP_AP: 8031 if (DBG) log("Untethering before stopping AP"); 8032 setWifiApState(WIFI_AP_STATE_DISABLING); 8033 stopTethering(); 8034 transitionTo(mUntetheringState); 8035 // More work to do after untethering 8036 deferMessage(message); 8037 break; 8038 default: 8039 return NOT_HANDLED; 8040 } 8041 return HANDLED; 8042 } 8043 } 8044 8045 class UntetheringState extends State { 8046 @Override 8047 public void enter() { 8048 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8049 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8050 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8051 8052 } 8053 @Override 8054 public boolean processMessage(Message message) { 8055 logStateAndMessage(message, getClass().getSimpleName()); 8056 8057 switch(message.what) { 8058 case CMD_TETHER_STATE_CHANGE: 8059 TetherStateChange stateChange = (TetherStateChange) message.obj; 8060 8061 /* Wait till wifi is untethered */ 8062 if (isWifiTethered(stateChange.active)) break; 8063 8064 transitionTo(mSoftApStartedState); 8065 break; 8066 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8067 if (message.arg1 == mTetherToken) { 8068 loge("Failed to get tether update, force stop access point"); 8069 transitionTo(mSoftApStartedState); 8070 } 8071 break; 8072 case CMD_START_SUPPLICANT: 8073 case CMD_STOP_SUPPLICANT: 8074 case CMD_START_AP: 8075 case CMD_STOP_AP: 8076 case CMD_START_DRIVER: 8077 case CMD_STOP_DRIVER: 8078 case CMD_SET_OPERATIONAL_MODE: 8079 case CMD_SET_COUNTRY_CODE: 8080 case CMD_SET_FREQUENCY_BAND: 8081 case CMD_START_PACKET_FILTERING: 8082 case CMD_STOP_PACKET_FILTERING: 8083 deferMessage(message); 8084 break; 8085 default: 8086 return NOT_HANDLED; 8087 } 8088 return HANDLED; 8089 } 8090 } 8091 8092 //State machine initiated requests can have replyTo set to null indicating 8093 //there are no recepients, we ignore those reply actions 8094 private void replyToMessage(Message msg, int what) { 8095 if (msg.replyTo == null) return; 8096 Message dstMsg = obtainMessageWithArg2(msg); 8097 dstMsg.what = what; 8098 mReplyChannel.replyToMessage(msg, dstMsg); 8099 } 8100 8101 private void replyToMessage(Message msg, int what, int arg1) { 8102 if (msg.replyTo == null) return; 8103 Message dstMsg = obtainMessageWithArg2(msg); 8104 dstMsg.what = what; 8105 dstMsg.arg1 = arg1; 8106 mReplyChannel.replyToMessage(msg, dstMsg); 8107 } 8108 8109 private void replyToMessage(Message msg, int what, Object obj) { 8110 if (msg.replyTo == null) return; 8111 Message dstMsg = obtainMessageWithArg2(msg); 8112 dstMsg.what = what; 8113 dstMsg.obj = obj; 8114 mReplyChannel.replyToMessage(msg, dstMsg); 8115 } 8116 8117 /** 8118 * arg2 on the source message has a unique id that needs to be retained in replies 8119 * to match the request 8120 8121 * see WifiManager for details 8122 */ 8123 private Message obtainMessageWithArg2(Message srcMsg) { 8124 Message msg = Message.obtain(); 8125 msg.arg2 = srcMsg.arg2; 8126 return msg; 8127 } 8128 8129 private static int parseHex(char ch) { 8130 if ('0' <= ch && ch <= '9') { 8131 return ch - '0'; 8132 } else if ('a' <= ch && ch <= 'f') { 8133 return ch - 'a' + 10; 8134 } else if ('A' <= ch && ch <= 'F') { 8135 return ch - 'A' + 10; 8136 } else { 8137 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 8138 } 8139 } 8140 8141 private byte[] parseHex(String hex) { 8142 /* This only works for good input; don't throw bad data at it */ 8143 if (hex == null) { 8144 return new byte[0]; 8145 } 8146 8147 if (hex.length() % 2 != 0) { 8148 throw new NumberFormatException(hex + " is not a valid hex string"); 8149 } 8150 8151 byte[] result = new byte[(hex.length())/2 + 1]; 8152 result[0] = (byte) ((hex.length())/2); 8153 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 8154 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 8155 byte b = (byte) (val & 0xFF); 8156 result[j] = b; 8157 } 8158 8159 return result; 8160 } 8161 8162 private static String makeHex(byte[] bytes) { 8163 StringBuilder sb = new StringBuilder(); 8164 for (byte b : bytes) { 8165 sb.append(String.format("%02x", b)); 8166 } 8167 return sb.toString(); 8168 } 8169 8170 private static String makeHex(byte[] bytes, int from, int len) { 8171 StringBuilder sb = new StringBuilder(); 8172 for (int i = 0; i < len; i++) { 8173 sb.append(String.format("%02x", bytes[from+i])); 8174 } 8175 return sb.toString(); 8176 } 8177 8178 8179 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 8180 8181 int len = array1.length + array2.length + array3.length; 8182 8183 if (array1.length != 0) { 8184 len++; /* add another byte for size */ 8185 } 8186 8187 if (array2.length != 0) { 8188 len++; /* add another byte for size */ 8189 } 8190 8191 if (array3.length != 0) { 8192 len++; /* add another byte for size */ 8193 } 8194 8195 byte[] result = new byte[len]; 8196 8197 int index = 0; 8198 if (array1.length != 0) { 8199 result[index] = (byte) (array1.length & 0xFF); 8200 index++; 8201 for (byte b : array1) { 8202 result[index] = b; 8203 index++; 8204 } 8205 } 8206 8207 if (array2.length != 0) { 8208 result[index] = (byte) (array2.length & 0xFF); 8209 index++; 8210 for (byte b : array2) { 8211 result[index] = b; 8212 index++; 8213 } 8214 } 8215 8216 if (array3.length != 0) { 8217 result[index] = (byte) (array3.length & 0xFF); 8218 index++; 8219 for (byte b : array3) { 8220 result[index] = b; 8221 index++; 8222 } 8223 } 8224 return result; 8225 } 8226 8227 void handleGsmAuthRequest(SimAuthRequestData requestData) { 8228 if (targetWificonfiguration == null 8229 || targetWificonfiguration.networkId == requestData.networkId) { 8230 logd("id matches targetWifiConfiguration"); 8231 } else { 8232 logd("id does not match targetWifiConfiguration"); 8233 return; 8234 } 8235 8236 TelephonyManager tm = (TelephonyManager) 8237 mContext.getSystemService(Context.TELEPHONY_SERVICE); 8238 8239 if (tm != null) { 8240 StringBuilder sb = new StringBuilder(); 8241 for (String challenge : requestData.challenges) { 8242 8243 logd("RAND = " + challenge); 8244 8245 byte[] rand = null; 8246 try { 8247 rand = parseHex(challenge); 8248 } catch (NumberFormatException e) { 8249 loge("malformed challenge"); 8250 continue; 8251 } 8252 8253 String base64Challenge = android.util.Base64.encodeToString( 8254 rand, android.util.Base64.NO_WRAP); 8255 /* 8256 * appType = 1 => SIM, 2 => USIM according to 8257 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 8258 */ 8259 int appType = 2; 8260 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 8261 logv("Raw Response - " + tmResponse); 8262 8263 if (tmResponse != null && tmResponse.length() > 4) { 8264 byte[] result = android.util.Base64.decode(tmResponse, 8265 android.util.Base64.DEFAULT); 8266 logv("Hex Response -" + makeHex(result)); 8267 int sres_len = result[0]; 8268 String sres = makeHex(result, 1, sres_len); 8269 int kc_offset = 1+sres_len; 8270 int kc_len = result[kc_offset]; 8271 String kc = makeHex(result, 1+kc_offset, kc_len); 8272 sb.append(":" + kc + ":" + sres); 8273 logv("kc:" + kc + " sres:" + sres); 8274 } else { 8275 loge("bad response - " + tmResponse); 8276 } 8277 } 8278 8279 String response = sb.toString(); 8280 logv("Supplicant Response -" + response); 8281 mWifiNative.simAuthResponse(requestData.networkId, response); 8282 } else { 8283 loge("could not get telephony manager"); 8284 } 8285 } 8286 8287 void handle3GAuthRequest(SimAuthRequestData requestData) { 8288 8289 } 8290} 8291