WifiStateMachine.java revision 7f3218ac0469ec2064253325708fe17550b43dfa
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.wifi; 18 19import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLED; 20import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLING; 21import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLED; 22import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLING; 23import static android.net.wifi.WifiManager.WIFI_AP_STATE_FAILED; 24import static android.net.wifi.WifiManager.WIFI_STATE_DISABLED; 25import static android.net.wifi.WifiManager.WIFI_STATE_DISABLING; 26import static android.net.wifi.WifiManager.WIFI_STATE_ENABLED; 27import static android.net.wifi.WifiManager.WIFI_STATE_ENABLING; 28/** 29 * TODO: 30 * Deprecate WIFI_STATE_UNKNOWN 31 */ 32import static android.net.wifi.WifiManager.WIFI_STATE_UNKNOWN; 33 34import android.app.ActivityManager; 35import android.app.AlarmManager; 36import android.app.AlertDialog; 37import android.app.PendingIntent; 38import android.app.backup.IBackupManager; 39import android.bluetooth.BluetoothAdapter; 40import android.content.BroadcastReceiver; 41import android.content.Context; 42import android.content.DialogInterface; 43import android.content.Intent; 44import android.content.IntentFilter; 45import android.content.pm.ApplicationInfo; 46import android.content.pm.PackageManager; 47import android.content.pm.PackageManager.NameNotFoundException; 48import android.database.ContentObserver; 49import android.net.ConnectivityManager; 50import android.net.DhcpResults; 51import android.net.DhcpStateMachine; 52import android.net.InterfaceConfiguration; 53import android.net.LinkAddress; 54import android.net.LinkProperties; 55import android.net.NetworkAgent; 56import android.net.NetworkCapabilities; 57import android.net.NetworkFactory; 58import android.net.NetworkInfo; 59import android.net.NetworkInfo.DetailedState; 60import android.net.NetworkRequest; 61import android.net.NetworkUtils; 62import android.net.RouteInfo; 63import android.net.StaticIpConfiguration; 64import android.net.TrafficStats; 65import android.net.wifi.BatchedScanResult; 66import android.net.wifi.BatchedScanSettings; 67import android.net.wifi.RssiPacketCountInfo; 68import android.net.wifi.ScanResult; 69import android.net.wifi.ScanSettings; 70import android.net.wifi.SupplicantState; 71import android.net.wifi.WifiChannel; 72import android.net.wifi.WifiConfiguration; 73import android.net.wifi.WifiConnectionStatistics; 74import android.net.wifi.WifiEnterpriseConfig; 75import android.net.wifi.WifiInfo; 76import android.net.wifi.WifiLinkLayerStats; 77import android.net.wifi.WifiManager; 78import android.net.wifi.WifiSsid; 79import android.net.wifi.WpsInfo; 80import android.net.wifi.WpsResult; 81import android.net.wifi.WpsResult.Status; 82import android.net.wifi.p2p.IWifiP2pManager; 83import android.net.wifi.passpoint.IWifiPasspointManager; 84import android.os.BatteryStats; 85import android.os.Bundle; 86import android.os.IBinder; 87import android.os.INetworkManagementService; 88import android.os.Looper; 89import android.os.Message; 90import android.os.Messenger; 91import android.os.PowerManager; 92import android.os.Process; 93import android.os.RemoteException; 94import android.os.ServiceManager; 95import android.os.SystemClock; 96import android.os.SystemProperties; 97import android.os.UserHandle; 98import android.os.WorkSource; 99import android.provider.Settings; 100import android.telephony.TelephonyManager; 101import android.text.TextUtils; 102import android.util.Log; 103import android.util.LruCache; 104import android.view.WindowManager; 105 106import com.android.internal.R; 107import com.android.internal.app.IBatteryStats; 108import com.android.internal.util.AsyncChannel; 109import com.android.internal.util.Protocol; 110import com.android.internal.util.State; 111import com.android.internal.util.StateMachine; 112import com.android.server.net.NetlinkTracker; 113import com.android.server.wifi.hotspot2.NetworkDetail; 114import com.android.server.wifi.hotspot2.SupplicantBridge; 115import com.android.server.wifi.p2p.WifiP2pServiceImpl; 116import com.android.server.wifi.passpoint.WifiPasspointServiceImpl; 117 118import java.io.BufferedReader; 119import java.io.FileDescriptor; 120import java.io.FileNotFoundException; 121import java.io.FileReader; 122import java.io.IOException; 123import java.io.PrintWriter; 124import java.net.Inet4Address; 125import java.net.InetAddress; 126import java.util.ArrayList; 127import java.util.Calendar; 128import java.util.HashSet; 129import java.util.LinkedList; 130import java.util.List; 131import java.util.Locale; 132import java.util.Queue; 133import java.util.Random; 134import java.util.concurrent.atomic.AtomicBoolean; 135import java.util.concurrent.atomic.AtomicInteger; 136import java.util.regex.Matcher; 137import java.util.regex.Pattern; 138 139/** 140 * Track the state of Wifi connectivity. All event handling is done here, 141 * and all changes in connectivity state are initiated here. 142 * 143 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 144 * In the current implementation, we support concurrent wifi p2p and wifi operation. 145 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 146 * handles p2p operation. 147 * 148 * @hide 149 */ 150public class WifiStateMachine extends StateMachine { 151 152 private static final String NETWORKTYPE = "WIFI"; 153 private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT"; 154 private static boolean DBG = false; 155 private static boolean VDBG = false; 156 private static boolean VVDBG = false; 157 private static boolean mLogMessages = false; 158 private static final String TAG = "WifiStateMachine"; 159 160 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 161 162 private static final String GOOGLE_OUI = "DA-A1-19"; 163 164 /* temporary debug flag - best network selection development */ 165 private static boolean PDBG = false; 166 167 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 168 * the corresponding BSSID. 169 */ 170 private boolean didBlackListBSSID = false; 171 172 /** 173 * Log with error attribute 174 * 175 * @param s is string log 176 */ 177 protected void loge(String s) { 178 Log.e(getName(), s); 179 } 180 protected void logd(String s) { 181 Log.d(getName(), s); 182 } 183 protected void log(String s) {; 184 Log.e(getName(), s); 185 } 186 187 private WifiMonitor mWifiMonitor; 188 private WifiNative mWifiNative; 189 private WifiConfigStore mWifiConfigStore; 190 private WifiAutoJoinController mWifiAutoJoinController; 191 private INetworkManagementService mNwService; 192 private ConnectivityManager mCm; 193 194 private final boolean mP2pSupported; 195 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 196 private boolean mTemporarilyDisconnectWifi = false; 197 private final String mPrimaryDeviceType; 198 199 /* Scan results handling */ 200 private List<ScanDetail> mScanResults = new ArrayList<>(); 201 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 202 private static final int SCAN_RESULT_CACHE_SIZE = 160; 203 private final LruCache<NetworkDetail, ScanDetail> mScanResultCache; 204 // For debug, number of known scan results that were found as part of last scan result event, 205 // as well the number of scans results returned by the supplicant with that message 206 private int mNumScanResultsKnown; 207 private int mNumScanResultsReturned; 208 209 /* Batch scan results */ 210 private final List<BatchedScanResult> mBatchedScanResults = 211 new ArrayList<BatchedScanResult>(); 212 private int mBatchedScanOwnerUid = UNKNOWN_SCAN_SOURCE; 213 private int mExpectedBatchedScans = 0; 214 private long mBatchedScanMinPollTime = 0; 215 216 private boolean mScreenOn = false; 217 218 /* Chipset supports background scan */ 219 private final boolean mBackgroundScanSupported; 220 221 private String mInterfaceName; 222 /* Tethering interface could be separate from wlan interface */ 223 private String mTetherInterfaceName; 224 225 private int mLastSignalLevel = -1; 226 private String mLastBssid; 227 private int mLastNetworkId; // The network Id we successfully joined 228 private boolean linkDebouncing = false; 229 230 // Testing various network disconnect cases by sending lots of spurious 231 // disconnect to supplicant 232 private boolean testNetworkDisconnect = false; 233 234 private boolean mEnableRssiPolling = false; 235 private boolean mEnableBackgroundScan = false; 236 private int mRssiPollToken = 0; 237 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 238 * In CONNECT_MODE, the STA can scan and connect to an access point 239 * In SCAN_ONLY_MODE, the STA can only scan for access points 240 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 241 */ 242 private int mOperationalMode = CONNECT_MODE; 243 private boolean mIsScanOngoing = false; 244 private boolean mIsFullScanOngoing = false; 245 private boolean mSendScanResultsBroadcast = false; 246 247 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 248 private WorkSource mScanWorkSource = null; 249 private static final int UNKNOWN_SCAN_SOURCE = -1; 250 private static final int SCAN_ALARM_SOURCE = -2; 251 private static final int ADD_OR_UPDATE_SOURCE = -3; 252 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 253 private static final int ENABLE_WIFI = -5; 254 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 255 256 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 257 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 258 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 259 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 260 261 private static final String BATCHED_SETTING = "batched_settings"; 262 private static final String BATCHED_WORKSOURCE = "batched_worksource"; 263 264 /* Tracks if state machine has received any screen state change broadcast yet. 265 * We can miss one of these at boot. 266 */ 267 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 268 269 private boolean mBluetoothConnectionActive = false; 270 271 private PowerManager.WakeLock mSuspendWakeLock; 272 273 /** 274 * Interval in milliseconds between polling for RSSI 275 * and linkspeed information 276 */ 277 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 278 279 /** 280 * Interval in milliseconds between receiving a disconnect event 281 * while connected to a good AP, and handling the disconnect proper 282 */ 283 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 284 285 /** 286 * Delay between supplicant restarts upon failure to establish connection 287 */ 288 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 289 290 /** 291 * Number of times we attempt to restart supplicant 292 */ 293 private static final int SUPPLICANT_RESTART_TRIES = 5; 294 295 private int mSupplicantRestartCount = 0; 296 /* Tracks sequence number on stop failure message */ 297 private int mSupplicantStopFailureToken = 0; 298 299 /** 300 * Tether state change notification time out 301 */ 302 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 303 304 /* Tracks sequence number on a tether notification time out */ 305 private int mTetherToken = 0; 306 307 /** 308 * Driver start time out. 309 */ 310 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 311 312 /* Tracks sequence number on a driver time out */ 313 private int mDriverStartToken = 0; 314 315 /** 316 * The link properties of the wifi interface. 317 * Do not modify this directly; use updateLinkProperties instead. 318 */ 319 private LinkProperties mLinkProperties; 320 321 /* Tracks sequence number on a periodic scan message */ 322 private int mPeriodicScanToken = 0; 323 324 // Wakelock held during wifi start/stop and driver load/unload 325 private PowerManager.WakeLock mWakeLock; 326 327 private Context mContext; 328 329 private final Object mDhcpResultsLock = new Object(); 330 private DhcpResults mDhcpResults; 331 private WifiInfo mWifiInfo; 332 private NetworkInfo mNetworkInfo; 333 private NetworkCapabilities mNetworkCapabilities; 334 private SupplicantStateTracker mSupplicantStateTracker; 335 private DhcpStateMachine mDhcpStateMachine; 336 private boolean mDhcpActive = false; 337 338 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 339 340 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 341 342 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 343 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 344 345 // Roaming failure count 346 private int mRoamFailCount = 0; 347 348 // This is the BSSID we are trying to associate to, it can be set to "any" 349 // if we havent selected a BSSID for joining. 350 // if we havent selected a BSSID for joining. 351 // The BSSID we are associated to is found in mWifiInfo 352 private String mTargetRoamBSSID = "any"; 353 354 private long mLastDriverRoamAttempt = 0; 355 356 private WifiConfiguration targetWificonfiguration = null; 357 358 // Used as debug to indicate which configuration last was saved 359 private WifiConfiguration lastSavedConfigurationAttempt = null; 360 361 // Used as debug to indicate which configuration last was removed 362 private WifiConfiguration lastForgetConfigurationAttempt = null; 363 364 //Random used by softAP channel Selection 365 private static Random mRandom = new Random(Calendar.getInstance().getTimeInMillis()); 366 boolean isRoaming() { 367 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 368 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 369 } 370 371 public void autoRoamSetBSSID(int netId, String bssid) { 372 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 373 } 374 375 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 376 boolean ret = true; 377 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 378 if (bssid == null) bssid = "any"; 379 if (config == null) return false; // Nothing to do 380 381 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 382 return false; // We didnt change anything 383 } 384 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 385 // Changing to ANY 386 if (!mWifiConfigStore.roamOnAny) { 387 ret = false; // Nothing to do 388 } 389 } 390 if (VDBG) { 391 loge("autoRoamSetBSSID " + bssid 392 + " key=" + config.configKey()); 393 } 394 config.autoJoinBSSID = bssid; 395 mTargetRoamBSSID = bssid; 396 mWifiConfigStore.saveWifiConfigBSSID(config); 397 return ret; 398 } 399 400 /** 401 * Save the UID correctly depending on if this is a new or existing network. 402 * @return true if operation is authorized, false otherwise 403 */ 404 boolean recordUidIfAuthorized(WifiConfiguration config, int uid) { 405 if (!mWifiConfigStore.isNetworkConfigured(config)) { 406 config.creatorUid = uid; 407 config.creatorName = mContext.getPackageManager().getNameForUid(uid); 408 } else if (!mWifiConfigStore.canModifyNetwork(uid, config)) { 409 return false; 410 } 411 412 config.lastUpdateUid = uid; 413 config.lastUpdateName = mContext.getPackageManager().getNameForUid(uid); 414 415 return true; 416 417 } 418 419 /** 420 * Checks to see if user has specified if the apps configuration is connectable. 421 * If the user hasn't specified we query the user and return true. 422 * 423 * @param message The message to be deffered 424 * @param netId Network id of the configuration to check against 425 * @param allowOverride If true we won't defer to the user if the uid of the message holds the 426 * CONFIG_OVERRIDE_PERMISSION 427 * @return True if we are waiting for user feedback or netId is invalid. False otherwise. 428 */ 429 boolean deferForUserInput(Message message, int netId, boolean allowOverride){ 430 final WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(netId); 431 432 // We can only evaluate saved configurations. 433 if (config == null) { 434 loge("deferForUserInput: configuration for netId="+netId+" not stored"); 435 return true; 436 } 437 438 // User initiated actions and system networks don't need to be queried 439 if ((allowOverride && mWifiConfigStore.checkConfigOverridePermission(message.sendingUid)) 440 || (mWifiConfigStore.checkConfigOverridePermission(config.lastUpdateUid))) { 441 config.userApproved = WifiConfiguration.USER_APPROVED; 442 443 if (config.linkedConfigurations != null) { 444 for (String key : config.linkedConfigurations.keySet()) { 445 WifiConfiguration linked = 446 mWifiConfigStore.getWifiConfiguration(key); 447 linked.userApproved = config.userApproved; 448 } 449 } 450 451 return false; 452 } 453 454 switch (config.userApproved) { 455 case WifiConfiguration.USER_APPROVED: 456 case WifiConfiguration.USER_BANNED: 457 return false; 458 case WifiConfiguration.USER_PENDING: 459 default: // USER_UNSPECIFIED 460 /* the intention was to ask user here; but a dialog box is * 461 * too invasive; so we are going to allow connection for now */ 462 config.userApproved = WifiConfiguration.USER_APPROVED; 463 return false; 464 } 465 } 466 467 /** 468 * Subset of link properties coming from netlink. 469 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 470 * and domains obtained from router advertisements (RFC 6106). 471 */ 472 private NetlinkTracker mNetlinkTracker; 473 474 private AlarmManager mAlarmManager; 475 private PendingIntent mScanIntent; 476 private PendingIntent mDriverStopIntent; 477 private PendingIntent mBatchedScanIntervalIntent; 478 479 /* Tracks current frequency mode */ 480 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 481 482 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 483 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 484 485 // Channel for sending replies. 486 private AsyncChannel mReplyChannel = new AsyncChannel(); 487 488 private WifiP2pServiceImpl mWifiP2pServiceImpl; 489 private WifiPasspointServiceImpl mPasspointServiceImpl; 490 491 // Used to initiate a connection with WifiP2pService 492 private AsyncChannel mWifiP2pChannel; 493 private AsyncChannel mWifiApConfigChannel; 494 495 private int mConnectionRequests = 0; 496 private WifiNetworkFactory mNetworkFactory; 497 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 498 private WifiNetworkAgent mNetworkAgent; 499 500 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 501 // We should really persist that into the networkHistory.txt file, and read it back when 502 // WifiStateMachine starts up 503 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 504 505 // Used to filter out requests we couldn't possibly satisfy. 506 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 507 508 /* The base for wifi message types */ 509 static final int BASE = Protocol.BASE_WIFI; 510 /* Start the supplicant */ 511 static final int CMD_START_SUPPLICANT = BASE + 11; 512 /* Stop the supplicant */ 513 static final int CMD_STOP_SUPPLICANT = BASE + 12; 514 /* Start the driver */ 515 static final int CMD_START_DRIVER = BASE + 13; 516 /* Stop the driver */ 517 static final int CMD_STOP_DRIVER = BASE + 14; 518 /* Indicates Static IP succeeded */ 519 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 520 /* Indicates Static IP failed */ 521 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 522 /* Indicates supplicant stop failed */ 523 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 524 /* Delayed stop to avoid shutting down driver too quick*/ 525 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 526 /* A delayed message sent to start driver when it fail to come up */ 527 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 528 529 /* Start the soft access point */ 530 static final int CMD_START_AP = BASE + 21; 531 /* Indicates soft ap start succeeded */ 532 static final int CMD_START_AP_SUCCESS = BASE + 22; 533 /* Indicates soft ap start failed */ 534 static final int CMD_START_AP_FAILURE = BASE + 23; 535 /* Stop the soft access point */ 536 static final int CMD_STOP_AP = BASE + 24; 537 /* Set the soft access point configuration */ 538 static final int CMD_SET_AP_CONFIG = BASE + 25; 539 /* Soft access point configuration set completed */ 540 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 541 /* Request the soft access point configuration */ 542 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 543 /* Response to access point configuration request */ 544 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 545 /* Invoked when getting a tether state change notification */ 546 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 547 /* A delayed message sent to indicate tether state change failed to arrive */ 548 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 549 550 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 551 552 /* Supplicant commands */ 553 /* Is supplicant alive ? */ 554 static final int CMD_PING_SUPPLICANT = BASE + 51; 555 /* Add/update a network configuration */ 556 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 557 /* Delete a network */ 558 static final int CMD_REMOVE_NETWORK = BASE + 53; 559 /* Enable a network. The device will attempt a connection to the given network. */ 560 static final int CMD_ENABLE_NETWORK = BASE + 54; 561 /* Enable all networks */ 562 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 563 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 564 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 565 /* Clear the blacklist network list */ 566 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 567 /* Save configuration */ 568 static final int CMD_SAVE_CONFIG = BASE + 58; 569 /* Get configured networks */ 570 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 571 /* Get available frequencies */ 572 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 573 /* Get adaptors */ 574 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 575 /* Get configured networks with real preSharedKey */ 576 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 577 /* Get Link Layer Stats thru HAL */ 578 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 579 /* Supplicant commands after driver start*/ 580 /* Initiate a scan */ 581 static final int CMD_START_SCAN = BASE + 71; 582 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 583 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 584 /* Disconnect from a network */ 585 static final int CMD_DISCONNECT = BASE + 73; 586 /* Reconnect to a network */ 587 static final int CMD_RECONNECT = BASE + 74; 588 /* Reassociate to a network */ 589 static final int CMD_REASSOCIATE = BASE + 75; 590 /* Get Connection Statistis */ 591 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 592 593 /* Controls suspend mode optimizations 594 * 595 * When high perf mode is enabled, suspend mode optimizations are disabled 596 * 597 * When high perf mode is disabled, suspend mode optimizations are enabled 598 * 599 * Suspend mode optimizations include: 600 * - packet filtering 601 * - turn off roaming 602 * - DTIM wake up settings 603 */ 604 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 605 /* Set the country code */ 606 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 607 /* Enables RSSI poll */ 608 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 609 /* RSSI poll */ 610 static final int CMD_RSSI_POLL = BASE + 83; 611 /* Set up packet filtering */ 612 static final int CMD_START_PACKET_FILTERING = BASE + 84; 613 /* Clear packet filter */ 614 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 615 /* Enable suspend mode optimizations in the driver */ 616 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 617 /* Delayed NETWORK_DISCONNECT */ 618 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 619 /* When there are no saved networks, we do a periodic scan to notify user of 620 * an open network */ 621 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 622 /* Test network Disconnection NETWORK_DISCONNECT */ 623 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 624 private int testNetworkDisconnectCounter = 0; 625 626 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 627 static final int MULTICAST_V6 = 1; 628 static final int MULTICAST_V4 = 0; 629 630 /* Set the frequency band */ 631 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 632 /* Enable TDLS on a specific MAC address */ 633 static final int CMD_ENABLE_TDLS = BASE + 92; 634 /* DHCP/IP configuration watchdog */ 635 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 636 /* Remove a packages associated configrations */ 637 static final int CMD_REMOVE_APP_CONFIGURATIONS = BASE + 97; 638 /* Remove a packages associated configrations */ 639 static final int CMD_REMOVE_USER_CONFIGURATIONS = BASE + 149; 640 641 /** 642 * Make this timer 40 seconds, which is about the normal DHCP timeout. 643 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 644 * for more than 30 seconds. 645 */ 646 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 647 648 int obtainingIpWatchdogCount = 0; 649 650 /* Commands from/to the SupplicantStateTracker */ 651 /* Reset the supplicant state tracker */ 652 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 653 654 655 /** 656 * Watchdog for protecting against b/16823537 657 * Leave time for 4-ways handshake to succeed 658 */ 659 static final int ROAM_GUARD_TIMER_MSEC = 15000; 660 661 int roamWatchdogCount = 0; 662 /* Roam state watchdog */ 663 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 664 /* Screen change intent handling */ 665 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 666 667 int disconnectingWatchdogCount = 0; 668 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 669 670 /* Disconnecting state watchdog */ 671 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 672 673 /* Disable an ephemeral network */ 674 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 675 676 /* P2p commands */ 677 /* We are ok with no response here since we wont do much with it anyway */ 678 public static final int CMD_ENABLE_P2P = BASE + 131; 679 /* In order to shut down supplicant cleanly, we wait till p2p has 680 * been disabled */ 681 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 682 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 683 684 public static final int CMD_BOOT_COMPLETED = BASE + 134; 685 686 /* change the batch scan settings. 687 * arg1 = responsible UID 688 * arg2 = csph (channel scans per hour) 689 * obj = bundle with the new settings and the optional worksource 690 */ 691 public static final int CMD_SET_BATCHED_SCAN = BASE + 135; 692 public static final int CMD_START_NEXT_BATCHED_SCAN = BASE + 136; 693 public static final int CMD_POLL_BATCHED_SCAN = BASE + 137; 694 695 /* We now have a valid IP configuration. */ 696 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 697 /* We no longer have a valid IP configuration. */ 698 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 699 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 700 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 701 702 /* Supplicant is trying to associate to a given BSSID */ 703 static final int CMD_TARGET_BSSID = BASE + 141; 704 705 /* Reload all networks and reconnect */ 706 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 707 708 static final int CMD_AUTO_CONNECT = BASE + 143; 709 710 static final int network_status_unwanted_disconnect = 0; 711 static final int network_status_unwanted_disable_autojoin = 1; 712 713 static final int CMD_UNWANTED_NETWORK = BASE + 144; 714 715 static final int CMD_AUTO_ROAM = BASE + 145; 716 717 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 718 719 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 720 721 static final int CMD_NETWORK_STATUS = BASE + 148; 722 723 /* Wifi state machine modes of operation */ 724 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 725 public static final int CONNECT_MODE = 1; 726 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 727 public static final int SCAN_ONLY_MODE = 2; 728 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 729 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 730 731 private static final int SUCCESS = 1; 732 private static final int FAILURE = -1; 733 734 /* Tracks if suspend optimizations need to be disabled by DHCP, 735 * screen or due to high perf mode. 736 * When any of them needs to disable it, we keep the suspend optimizations 737 * disabled 738 */ 739 private int mSuspendOptNeedsDisabled = 0; 740 741 private static final int SUSPEND_DUE_TO_DHCP = 1; 742 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1<<1; 743 private static final int SUSPEND_DUE_TO_SCREEN = 1<<2; 744 745 /* Tracks if user has enabled suspend optimizations through settings */ 746 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 747 748 /** 749 * Default framework scan interval in milliseconds. This is used in the scenario in which 750 * wifi chipset does not support background scanning to set up a 751 * periodic wake up scan so that the device can connect to a new access 752 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 753 * override this. 754 */ 755 private final int mDefaultFrameworkScanIntervalMs; 756 757 private int mDisconnectedScanPeriodMs = 10000; 758 759 /** 760 * Supplicant scan interval in milliseconds. 761 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 762 * from the default config if the setting is not set 763 */ 764 private long mSupplicantScanIntervalMs; 765 766 /** 767 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 768 */ 769 private long lastFullBandConnectedTimeMilli; 770 771 /** 772 * time interval to the next full band scan we will perform for 773 * autojoin while connected with screen lit 774 */ 775 private long fullBandConnectedTimeIntervalMilli; 776 777 /** 778 * max time interval to the next full band scan we will perform for 779 * autojoin while connected with screen lit 780 * Max time is 5 minutes 781 */ 782 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 783 784 /** 785 * Minimum time interval between enabling all networks. 786 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 787 * due to enabling every time. We add a threshold to avoid this. 788 */ 789 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 790 private long mLastEnableAllNetworksTime; 791 792 int mRunningBeaconCount = 0; 793 794 /** 795 * Starting and shutting down driver too quick causes problems leading to driver 796 * being in a bad state. Delay driver stop. 797 */ 798 private final int mDriverStopDelayMs; 799 private int mDelayedStopCounter; 800 private boolean mInDelayedStop = false; 801 802 // there is a delay between StateMachine change country code and Supplicant change country code 803 // here save the current WifiStateMachine set country code 804 private volatile String mSetCountryCode = null; 805 806 // Supplicant doesn't like setting the same country code multiple times (it may drop 807 // currently connected network), so we save the current device set country code here to avoid 808 // redundency 809 private String mDriverSetCountryCode = null; 810 811 /* Default parent state */ 812 private State mDefaultState = new DefaultState(); 813 /* Temporary initial state */ 814 private State mInitialState = new InitialState(); 815 /* Driver loaded, waiting for supplicant to start */ 816 private State mSupplicantStartingState = new SupplicantStartingState(); 817 /* Driver loaded and supplicant ready */ 818 private State mSupplicantStartedState = new SupplicantStartedState(); 819 /* Waiting for supplicant to stop and monitor to exit */ 820 private State mSupplicantStoppingState = new SupplicantStoppingState(); 821 /* Driver start issued, waiting for completed event */ 822 private State mDriverStartingState = new DriverStartingState(); 823 /* Driver started */ 824 private State mDriverStartedState = new DriverStartedState(); 825 /* Wait until p2p is disabled 826 * This is a special state which is entered right after we exit out of DriverStartedState 827 * before transitioning to another state. 828 */ 829 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 830 /* Driver stopping */ 831 private State mDriverStoppingState = new DriverStoppingState(); 832 /* Driver stopped */ 833 private State mDriverStoppedState = new DriverStoppedState(); 834 /* Scan for networks, no connection will be established */ 835 private State mScanModeState = new ScanModeState(); 836 /* Connecting to an access point */ 837 private State mConnectModeState = new ConnectModeState(); 838 /* Connected at 802.11 (L2) level */ 839 private State mL2ConnectedState = new L2ConnectedState(); 840 /* fetching IP after connection to access point (assoc+auth complete) */ 841 private State mObtainingIpState = new ObtainingIpState(); 842 /* Waiting for link quality verification to be complete */ 843 private State mVerifyingLinkState = new VerifyingLinkState(); 844 /* Connected with IP addr */ 845 private State mConnectedState = new ConnectedState(); 846 /* Roaming */ 847 private State mRoamingState = new RoamingState(); 848 /* disconnect issued, waiting for network disconnect confirmation */ 849 private State mDisconnectingState = new DisconnectingState(); 850 /* Network is not connected, supplicant assoc+auth is not complete */ 851 private State mDisconnectedState = new DisconnectedState(); 852 /* Waiting for WPS to be completed*/ 853 private State mWpsRunningState = new WpsRunningState(); 854 855 /* Soft ap is starting up */ 856 private State mSoftApStartingState = new SoftApStartingState(); 857 /* Soft ap is running */ 858 private State mSoftApStartedState = new SoftApStartedState(); 859 /* Soft ap is running and we are waiting for tether notification */ 860 private State mTetheringState = new TetheringState(); 861 /* Soft ap is running and we are tethered through connectivity service */ 862 private State mTetheredState = new TetheredState(); 863 /* Waiting for untether confirmation before stopping soft Ap */ 864 private State mUntetheringState = new UntetheringState(); 865 866 private class TetherStateChange { 867 ArrayList<String> available; 868 ArrayList<String> active; 869 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 870 available = av; 871 active = ac; 872 } 873 } 874 875 public static class SimAuthRequestData { 876 int networkId; 877 int protocol; 878 String ssid; 879 String[] challenges; 880 } 881 882 public static class SimAuthResponseData { 883 int id; 884 String Kc1; 885 String SRES1; 886 String Kc2; 887 String SRES2; 888 String Kc3; 889 String SRES3; 890 } 891 892 /** 893 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 894 * {@link WifiManager#WIFI_STATE_DISABLING}, 895 * {@link WifiManager#WIFI_STATE_ENABLED}, 896 * {@link WifiManager#WIFI_STATE_ENABLING}, 897 * {@link WifiManager#WIFI_STATE_UNKNOWN} 898 * 899 */ 900 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 901 902 /** 903 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 904 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 905 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 906 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 907 * {@link WifiManager#WIFI_AP_STATE_FAILED} 908 * 909 */ 910 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 911 912 private static final int SCAN_REQUEST = 0; 913 private static final String ACTION_START_SCAN = 914 "com.android.server.WifiManager.action.START_SCAN"; 915 916 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 917 private static final int DRIVER_STOP_REQUEST = 0; 918 private static final String ACTION_DELAYED_DRIVER_STOP = 919 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 920 921 private static final String ACTION_REFRESH_BATCHED_SCAN = 922 "com.android.server.WifiManager.action.REFRESH_BATCHED_SCAN"; 923 /** 924 * Keep track of whether WIFI is running. 925 */ 926 private boolean mIsRunning = false; 927 928 /** 929 * Keep track of whether we last told the battery stats we had started. 930 */ 931 private boolean mReportedRunning = false; 932 933 /** 934 * Most recently set source of starting WIFI. 935 */ 936 private final WorkSource mRunningWifiUids = new WorkSource(); 937 938 /** 939 * The last reported UIDs that were responsible for starting WIFI. 940 */ 941 private final WorkSource mLastRunningWifiUids = new WorkSource(); 942 943 private final IBatteryStats mBatteryStats; 944 945 private BatchedScanSettings mBatchedScanSettings = null; 946 947 /** 948 * Track the worksource/cost of the current settings and track what's been noted 949 * to the battery stats, so we can mark the end of the previous when changing. 950 */ 951 private WorkSource mBatchedScanWorkSource = null; 952 private int mBatchedScanCsph = 0; 953 private WorkSource mNotedBatchedScanWorkSource = null; 954 private int mNotedBatchedScanCsph = 0; 955 956 private String mTcpBufferSizes = null; 957 958 // Used for debug and stats gathering 959 private static int sScanAlarmIntentCount = 0; 960 961 final static int frameworkMinScanIntervalSaneValue = 10000; 962 963 public WifiStateMachine(Context context, String wlanInterface, 964 WifiTrafficPoller trafficPoller){ 965 super("WifiStateMachine"); 966 mContext = context; 967 mSetCountryCode = Settings.Global.getString( 968 mContext.getContentResolver(), Settings.Global.WIFI_COUNTRY_CODE); 969 mInterfaceName = wlanInterface; 970 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 971 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 972 BatteryStats.SERVICE_NAME)); 973 974 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 975 mNwService = INetworkManagementService.Stub.asInterface(b); 976 977 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 978 PackageManager.FEATURE_WIFI_DIRECT); 979 980 mWifiNative = new WifiNative(mInterfaceName); 981 mWifiConfigStore = new WifiConfigStore(context, mWifiNative); 982 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 983 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 984 mWifiMonitor = new WifiMonitor(this, mWifiNative); 985 mWifiInfo = new WifiInfo(); 986 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 987 getHandler()); 988 mLinkProperties = new LinkProperties(); 989 990 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 991 mWifiP2pServiceImpl = (WifiP2pServiceImpl)IWifiP2pManager.Stub.asInterface(s1); 992 993 IBinder s2 = ServiceManager.getService(Context.WIFI_PASSPOINT_SERVICE); 994 mPasspointServiceImpl = 995 (WifiPasspointServiceImpl)IWifiPasspointManager.Stub.asInterface(s2); 996 997 mNetworkInfo.setIsAvailable(false); 998 mLastBssid = null; 999 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 1000 mLastSignalLevel = -1; 1001 1002 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 1003 public void update() { 1004 sendMessage(CMD_UPDATE_LINKPROPERTIES); 1005 } 1006 }); 1007 try { 1008 mNwService.registerObserver(mNetlinkTracker); 1009 } catch (RemoteException e) { 1010 loge("Couldn't register netlink tracker: " + e.toString()); 1011 } 1012 1013 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 1014 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 1015 mBatchedScanIntervalIntent = getPrivateBroadcast(ACTION_REFRESH_BATCHED_SCAN, 0); 1016 1017 // Make sure the interval is not configured less than 10 seconds 1018 int period = mContext.getResources().getInteger( 1019 R.integer.config_wifi_framework_scan_interval); 1020 if (period < frameworkMinScanIntervalSaneValue) { 1021 period = frameworkMinScanIntervalSaneValue; 1022 } 1023 mDefaultFrameworkScanIntervalMs = period; 1024 mDriverStopDelayMs = mContext.getResources().getInteger( 1025 R.integer.config_wifi_driver_stop_delay); 1026 1027 mBackgroundScanSupported = mContext.getResources().getBoolean( 1028 R.bool.config_wifi_background_scan_support); 1029 1030 mPrimaryDeviceType = mContext.getResources().getString( 1031 R.string.config_wifi_p2p_device_type); 1032 1033 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1034 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1035 1036 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 1037 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 1038 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 1039 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 1040 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 1041 // TODO - needs to be a bit more dynamic 1042 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 1043 1044 mContext.registerReceiver( 1045 new BroadcastReceiver() { 1046 @Override 1047 public void onReceive(Context context, Intent intent) { 1048 ArrayList<String> available = intent.getStringArrayListExtra( 1049 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 1050 ArrayList<String> active = intent.getStringArrayListExtra( 1051 ConnectivityManager.EXTRA_ACTIVE_TETHER); 1052 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 1053 } 1054 },new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 1055 1056 mContext.registerReceiver( 1057 new BroadcastReceiver() { 1058 @Override 1059 public void onReceive(Context context, Intent intent) { 1060 sScanAlarmIntentCount++; // Used for debug only 1061 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 1062 if (VDBG) 1063 loge("WiFiStateMachine SCAN ALARM -> " + mDelayedScanCounter.get()); 1064 } 1065 }, 1066 new IntentFilter(ACTION_START_SCAN)); 1067 1068 IntentFilter filter = new IntentFilter(); 1069 filter.addAction(Intent.ACTION_SCREEN_ON); 1070 filter.addAction(Intent.ACTION_SCREEN_OFF); 1071 filter.addAction(ACTION_REFRESH_BATCHED_SCAN); 1072 mContext.registerReceiver( 1073 new BroadcastReceiver() { 1074 @Override 1075 public void onReceive(Context context, Intent intent) { 1076 String action = intent.getAction(); 1077 1078 if (action.equals(Intent.ACTION_SCREEN_ON)) { 1079 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 1080 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 1081 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 1082 } else if (action.equals(ACTION_REFRESH_BATCHED_SCAN)) { 1083 startNextBatchedScanAsync(); 1084 } 1085 } 1086 }, filter); 1087 1088 mContext.registerReceiver( 1089 new BroadcastReceiver() { 1090 @Override 1091 public void onReceive(Context context, Intent intent) { 1092 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 1093 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 1094 } 1095 }, 1096 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1097 1098 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1099 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1100 new ContentObserver(getHandler()) { 1101 @Override 1102 public void onChange(boolean selfChange) { 1103 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1104 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1105 } 1106 }); 1107 1108 mContext.registerReceiver( 1109 new BroadcastReceiver() { 1110 @Override 1111 public void onReceive(Context context, Intent intent) { 1112 sendMessage(CMD_BOOT_COMPLETED); 1113 } 1114 }, 1115 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1116 1117 mScanResultCache = new LruCache<>(SCAN_RESULT_CACHE_SIZE); 1118 1119 PowerManager powerManager = (PowerManager)mContext.getSystemService(Context.POWER_SERVICE); 1120 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1121 1122 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1123 mSuspendWakeLock.setReferenceCounted(false); 1124 1125 mTcpBufferSizes = mContext.getResources().getString( 1126 com.android.internal.R.string.config_wifi_tcp_buffers); 1127 1128 addState(mDefaultState); 1129 addState(mInitialState, mDefaultState); 1130 addState(mSupplicantStartingState, mDefaultState); 1131 addState(mSupplicantStartedState, mDefaultState); 1132 addState(mDriverStartingState, mSupplicantStartedState); 1133 addState(mDriverStartedState, mSupplicantStartedState); 1134 addState(mScanModeState, mDriverStartedState); 1135 addState(mConnectModeState, mDriverStartedState); 1136 addState(mL2ConnectedState, mConnectModeState); 1137 addState(mObtainingIpState, mL2ConnectedState); 1138 addState(mVerifyingLinkState, mL2ConnectedState); 1139 addState(mConnectedState, mL2ConnectedState); 1140 addState(mRoamingState, mL2ConnectedState); 1141 addState(mDisconnectingState, mConnectModeState); 1142 addState(mDisconnectedState, mConnectModeState); 1143 addState(mWpsRunningState, mConnectModeState); 1144 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1145 addState(mDriverStoppingState, mSupplicantStartedState); 1146 addState(mDriverStoppedState, mSupplicantStartedState); 1147 addState(mSupplicantStoppingState, mDefaultState); 1148 addState(mSoftApStartingState, mDefaultState); 1149 addState(mSoftApStartedState, mDefaultState); 1150 addState(mTetheringState, mSoftApStartedState); 1151 addState(mTetheredState, mSoftApStartedState); 1152 addState(mUntetheringState, mSoftApStartedState); 1153 1154 setInitialState(mInitialState); 1155 1156 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1157 setLogOnlyTransitions(false); 1158 if (VDBG) setDbg(true); 1159 1160 //start the state machine 1161 start(); 1162 1163 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1164 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1165 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1166 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1167 } 1168 1169 1170 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1171 Intent intent = new Intent(action, null); 1172 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1173 intent.setPackage(this.getClass().getPackage().getName()); 1174 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1175 } 1176 1177 private int mVerboseLoggingLevel = 0; 1178 1179 int getVerboseLoggingLevel() { 1180 return mVerboseLoggingLevel; 1181 } 1182 1183 void enableVerboseLogging(int verbose) { 1184 mVerboseLoggingLevel = verbose; 1185 if (verbose > 0) { 1186 DBG = true; 1187 VDBG = true; 1188 PDBG = true; 1189 mLogMessages = true; 1190 mWifiNative.setSupplicantLogLevel("DEBUG"); 1191 } else { 1192 DBG = false; 1193 VDBG = false; 1194 PDBG = false; 1195 mLogMessages = false; 1196 mWifiNative.setSupplicantLogLevel("INFO"); 1197 } 1198 mWifiAutoJoinController.enableVerboseLogging(verbose); 1199 mWifiMonitor.enableVerboseLogging(verbose); 1200 mWifiNative.enableVerboseLogging(verbose); 1201 mWifiConfigStore.enableVerboseLogging(verbose); 1202 mSupplicantStateTracker.enableVerboseLogging(verbose); 1203 } 1204 1205 private int mAggressiveHandover = 0; 1206 1207 int getAggressiveHandover() { 1208 return mAggressiveHandover; 1209 } 1210 1211 void enableAggressiveHandover(int enabled) { 1212 mAggressiveHandover = enabled; 1213 } 1214 1215 public void setAllowScansWithTraffic(int enabled) { 1216 mWifiConfigStore.alwaysEnableScansWhileAssociated.set(enabled); 1217 } 1218 1219 public int getAllowScansWithTraffic() { 1220 return mWifiConfigStore.alwaysEnableScansWhileAssociated.get(); 1221 } 1222 1223 /* 1224 * 1225 * Framework scan control 1226 */ 1227 1228 private boolean mAlarmEnabled = false; 1229 /* This is set from the overlay config file or from a secure setting. 1230 * A value of 0 disables scanning in the framework. 1231 */ 1232 private long mFrameworkScanIntervalMs = 10000; 1233 1234 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1235 1236 private void setScanAlarm(boolean enabled) { 1237 if (PDBG) { 1238 loge("setScanAlarm " + enabled 1239 + " period " + mDefaultFrameworkScanIntervalMs 1240 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1241 } 1242 if (mBackgroundScanSupported == false) { 1243 // Scan alarm is only used for background scans if they are not 1244 // offloaded to the wifi chipset, hence enable the scan alarm 1245 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1246 enabled = true; 1247 } 1248 1249 if (enabled == mAlarmEnabled) return; 1250 if (enabled) { 1251 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1252 /* going to wake up the host processor to look for access points */ 1253 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1254 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1255 mScanIntent); 1256 mAlarmEnabled = true; 1257 } else { 1258 mAlarmManager.cancel(mScanIntent); 1259 mAlarmEnabled = false; 1260 } 1261 } 1262 1263 private void cancelDelayedScan() { 1264 mDelayedScanCounter.incrementAndGet(); 1265 loge("cancelDelayedScan -> " + mDelayedScanCounter); 1266 } 1267 1268 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1269 ScanSettings settings, WorkSource workSource) { 1270 if (counter != mDelayedScanCounter.get()) { 1271 return false; 1272 } 1273 if (restart) 1274 startDelayedScan(milli, settings, workSource); 1275 return true; 1276 } 1277 1278 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1279 if (milli <= 0) return; 1280 /** 1281 * The cases where the scan alarm should be run are : 1282 * - DisconnectedState && screenOn => used delayed timer 1283 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1284 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1285 * - ConnectedState && screenOn => used delayed timer 1286 */ 1287 1288 mDelayedScanCounter.incrementAndGet(); 1289 if (mScreenOn && 1290 (getCurrentState() == mDisconnectedState 1291 || getCurrentState() == mConnectedState)) { 1292 Bundle bundle = new Bundle(); 1293 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1294 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1295 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1296 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1297 mDelayedScanCounter.get(), bundle, milli); 1298 if (DBG) loge("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1299 } else if (mBackgroundScanSupported == false 1300 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1301 setScanAlarm(true); 1302 if (DBG) loge("startDelayedScan start scan alarm -> " 1303 + mDelayedScanCounter + " milli " + milli); 1304 } else { 1305 if (DBG) loge("startDelayedScan unhandled -> " 1306 + mDelayedScanCounter + " milli " + milli); 1307 } 1308 } 1309 1310 private boolean setRandomMacOui() { 1311 String oui = mContext.getResources().getString( 1312 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1313 String[] ouiParts = oui.split("-"); 1314 byte[] ouiBytes = new byte[3]; 1315 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1316 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1317 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1318 1319 logd("Setting OUI to " + oui); 1320 return mWifiNative.setScanningMacOui(ouiBytes); 1321 } 1322 1323 /********************************************************* 1324 * Methods exposed for public use 1325 ********************************************************/ 1326 1327 public Messenger getMessenger() { 1328 return new Messenger(getHandler()); 1329 } 1330 1331 public WifiMonitor getWifiMonitor() { 1332 return mWifiMonitor; 1333 } 1334 1335 /** 1336 * TODO: doc 1337 */ 1338 public boolean syncPingSupplicant(AsyncChannel channel) { 1339 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1340 boolean result = (resultMsg.arg1 != FAILURE); 1341 resultMsg.recycle(); 1342 return result; 1343 } 1344 1345 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1346 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1347 List<WifiChannel> list = null; 1348 if (resultMsg.obj != null) { 1349 list = new ArrayList<WifiChannel>(); 1350 String freqs = (String) resultMsg.obj; 1351 String[] lines = freqs.split("\n"); 1352 for (String line : lines) 1353 if (line.contains("MHz")) { 1354 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1355 WifiChannel c = new WifiChannel(); 1356 String[] prop = line.split(" "); 1357 if (prop.length < 5) continue; 1358 try { 1359 c.channelNum = Integer.parseInt(prop[1]); 1360 c.freqMHz = Integer.parseInt(prop[3]); 1361 } catch (NumberFormatException e) { } 1362 c.isDFS = line.contains("(DFS)"); 1363 list.add(c); 1364 } else if (line.contains("Mode[B] Channels:")) { 1365 // B channels are the same as G channels, skipped 1366 break; 1367 } 1368 } 1369 resultMsg.recycle(); 1370 return (list != null && list.size() > 0) ? list : null; 1371 } 1372 1373 /** 1374 * When settings allowing making use of untrusted networks change, trigger a scan 1375 * so as to kick of autojoin. 1376 */ 1377 public void startScanForUntrustedSettingChange() { 1378 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1379 } 1380 1381 /** 1382 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1383 * given to callingUid. 1384 * 1385 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1386 * workSource is specified. 1387 * @param workSource If not null, blame is given to workSource. 1388 * @param settings Scan settings, see {@link ScanSettings}. 1389 */ 1390 public void startScan(int callingUid, int scanCounter, 1391 ScanSettings settings, WorkSource workSource) { 1392 Bundle bundle = new Bundle(); 1393 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1394 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1395 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1396 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1397 } 1398 1399 /** 1400 * start or stop batched scanning using the given settings 1401 */ 1402 public void setBatchedScanSettings(BatchedScanSettings settings, int callingUid, int csph, 1403 WorkSource workSource) { 1404 Bundle bundle = new Bundle(); 1405 bundle.putParcelable(BATCHED_SETTING, settings); 1406 bundle.putParcelable(BATCHED_WORKSOURCE, workSource); 1407 sendMessage(CMD_SET_BATCHED_SCAN, callingUid, csph, bundle); 1408 } 1409 1410 public List<BatchedScanResult> syncGetBatchedScanResultsList() { 1411 synchronized (mBatchedScanResults) { 1412 List<BatchedScanResult> batchedScanList = 1413 new ArrayList<BatchedScanResult>(mBatchedScanResults.size()); 1414 for(BatchedScanResult result: mBatchedScanResults) { 1415 batchedScanList.add(new BatchedScanResult(result)); 1416 } 1417 return batchedScanList; 1418 } 1419 } 1420 1421 public void requestBatchedScanPoll() { 1422 sendMessage(CMD_POLL_BATCHED_SCAN); 1423 } 1424 1425 private void startBatchedScan() { 1426 if (mBatchedScanSettings == null) return; 1427 1428 if (mDhcpActive) { 1429 if (DBG) log("not starting Batched Scans due to DHCP"); 1430 return; 1431 } 1432 1433 // first grab any existing data 1434 retrieveBatchedScanData(); 1435 1436 if (PDBG) loge("try starting Batched Scans due to DHCP"); 1437 1438 1439 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1440 1441 String scansExpected = mWifiNative.setBatchedScanSettings(mBatchedScanSettings); 1442 try { 1443 mExpectedBatchedScans = Integer.parseInt(scansExpected); 1444 setNextBatchedAlarm(mExpectedBatchedScans); 1445 if (mExpectedBatchedScans > 0) noteBatchedScanStart(); 1446 } catch (NumberFormatException e) { 1447 stopBatchedScan(); 1448 loge("Exception parsing WifiNative.setBatchedScanSettings response " + e); 1449 } 1450 } 1451 1452 // called from BroadcastListener 1453 private void startNextBatchedScanAsync() { 1454 sendMessage(CMD_START_NEXT_BATCHED_SCAN); 1455 } 1456 1457 private void startNextBatchedScan() { 1458 // first grab any existing data 1459 retrieveBatchedScanData(); 1460 1461 setNextBatchedAlarm(mExpectedBatchedScans); 1462 } 1463 1464 private void handleBatchedScanPollRequest() { 1465 if (DBG) { 1466 log("handleBatchedScanPoll Request - mBatchedScanMinPollTime=" + 1467 mBatchedScanMinPollTime + " , mBatchedScanSettings=" + 1468 mBatchedScanSettings); 1469 } 1470 // if there is no appropriate PollTime that's because we either aren't 1471 // batching or we've already set a time for a poll request 1472 if (mBatchedScanMinPollTime == 0) return; 1473 if (mBatchedScanSettings == null) return; 1474 1475 long now = System.currentTimeMillis(); 1476 1477 if (now > mBatchedScanMinPollTime) { 1478 // do the poll and reset our timers 1479 startNextBatchedScan(); 1480 } else { 1481 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, mBatchedScanMinPollTime, 1482 mBatchedScanIntervalIntent); 1483 mBatchedScanMinPollTime = 0; 1484 } 1485 } 1486 1487 // return true if new/different 1488 private boolean recordBatchedScanSettings(int responsibleUid, int csph, Bundle bundle) { 1489 BatchedScanSettings settings = bundle.getParcelable(BATCHED_SETTING); 1490 WorkSource responsibleWorkSource = bundle.getParcelable(BATCHED_WORKSOURCE); 1491 1492 if (DBG) { 1493 log("set batched scan to " + settings + " for uid=" + responsibleUid + 1494 ", worksource=" + responsibleWorkSource); 1495 } 1496 if (settings != null) { 1497 if (settings.equals(mBatchedScanSettings)) return false; 1498 } else { 1499 if (mBatchedScanSettings == null) return false; 1500 } 1501 mBatchedScanSettings = settings; 1502 if (responsibleWorkSource == null) responsibleWorkSource = new WorkSource(responsibleUid); 1503 mBatchedScanWorkSource = responsibleWorkSource; 1504 mBatchedScanCsph = csph; 1505 return true; 1506 } 1507 1508 private void stopBatchedScan() { 1509 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1510 retrieveBatchedScanData(); 1511 mWifiNative.setBatchedScanSettings(null); 1512 noteBatchedScanStop(); 1513 } 1514 1515 private void setNextBatchedAlarm(int scansExpected) { 1516 1517 if (mBatchedScanSettings == null || scansExpected < 1) return; 1518 1519 mBatchedScanMinPollTime = System.currentTimeMillis() + 1520 mBatchedScanSettings.scanIntervalSec * 1000; 1521 1522 if (mBatchedScanSettings.maxScansPerBatch < scansExpected) { 1523 scansExpected = mBatchedScanSettings.maxScansPerBatch; 1524 } 1525 1526 int secToFull = mBatchedScanSettings.scanIntervalSec; 1527 secToFull *= scansExpected; 1528 1529 int debugPeriod = SystemProperties.getInt("wifi.batchedScan.pollPeriod", 0); 1530 if (debugPeriod > 0) secToFull = debugPeriod; 1531 1532 // set the alarm to do the next poll. We set it a little short as we'd rather 1533 // wake up wearly than miss a scan due to buffer overflow 1534 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 1535 + ((secToFull - (mBatchedScanSettings.scanIntervalSec / 2)) * 1000), 1536 mBatchedScanIntervalIntent); 1537 } 1538 1539 /** 1540 * Start reading new scan data 1541 * Data comes in as: 1542 * "scancount=5\n" 1543 * "nextcount=5\n" 1544 * "apcount=3\n" 1545 * "trunc\n" (optional) 1546 * "bssid=...\n" 1547 * "ssid=...\n" 1548 * "freq=...\n" (in Mhz) 1549 * "level=...\n" 1550 * "dist=...\n" (in cm) 1551 * "distsd=...\n" (standard deviation, in cm) 1552 * "====" 1553 * "bssid=...\n" 1554 * etc 1555 * "====" 1556 * "bssid=...\n" 1557 * etc 1558 * "%%%%" 1559 * "apcount=2\n" 1560 * "bssid=...\n" 1561 * etc 1562 * "%%%% 1563 * etc 1564 * "----" 1565 */ 1566 private final static boolean DEBUG_PARSE = false; 1567 private void retrieveBatchedScanData() { 1568 String rawData = mWifiNative.getBatchedScanResults(); 1569 if (DEBUG_PARSE) log("rawData = " + rawData); 1570 mBatchedScanMinPollTime = 0; 1571 if (rawData == null || rawData.equalsIgnoreCase("OK")) { 1572 loge("Unexpected BatchedScanResults :" + rawData); 1573 return; 1574 } 1575 1576 int scanCount = 0; 1577 final String END_OF_BATCHES = "----"; 1578 final String SCANCOUNT = "scancount="; 1579 final String TRUNCATED = "trunc"; 1580 final String AGE = "age="; 1581 final String DIST = "dist="; 1582 final String DISTSD = "distSd="; 1583 1584 String splitData[] = rawData.split("\n"); 1585 int n = 0; 1586 if (splitData[n].startsWith(SCANCOUNT)) { 1587 try { 1588 scanCount = Integer.parseInt(splitData[n++].substring(SCANCOUNT.length())); 1589 } catch (NumberFormatException e) { 1590 loge("scancount parseInt Exception from " + splitData[n]); 1591 } 1592 } else log("scancount not found"); 1593 if (scanCount == 0) { 1594 loge("scanCount==0 - aborting"); 1595 return; 1596 } 1597 1598 final Intent intent = new Intent(WifiManager.BATCHED_SCAN_RESULTS_AVAILABLE_ACTION); 1599 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1600 1601 synchronized (mBatchedScanResults) { 1602 mBatchedScanResults.clear(); 1603 BatchedScanResult batchedScanResult = new BatchedScanResult(); 1604 1605 String bssid = null; 1606 WifiSsid wifiSsid = null; 1607 int level = 0; 1608 int freq = 0; 1609 int dist, distSd; 1610 long tsf = 0; 1611 dist = distSd = ScanResult.UNSPECIFIED; 1612 final long now = SystemClock.elapsedRealtime(); 1613 final int bssidStrLen = BSSID_STR.length(); 1614 1615 while (true) { 1616 while (n < splitData.length) { 1617 if (DEBUG_PARSE) logd("parsing " + splitData[n]); 1618 if (splitData[n].equals(END_OF_BATCHES)) { 1619 if (n+1 != splitData.length) { 1620 loge("didn't consume " + (splitData.length-n)); 1621 } 1622 if (mBatchedScanResults.size() > 0) { 1623 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1624 } 1625 logd("retrieveBatchedScanResults X"); 1626 return; 1627 } 1628 if ((splitData[n].equals(END_STR)) || splitData[n].equals(DELIMITER_STR)) { 1629 if (bssid != null) { 1630 batchedScanResult.scanResults.add(new ScanResult( 1631 wifiSsid, bssid, null, 1632 level, freq, tsf, dist, distSd)); 1633 wifiSsid = null; 1634 bssid = null; 1635 level = 0; 1636 freq = 0; 1637 tsf = 0; 1638 dist = distSd = ScanResult.UNSPECIFIED; 1639 } 1640 if (splitData[n].equals(END_STR)) { 1641 if (batchedScanResult.scanResults.size() != 0) { 1642 mBatchedScanResults.add(batchedScanResult); 1643 batchedScanResult = new BatchedScanResult(); 1644 } else { 1645 logd("Found empty batch"); 1646 } 1647 } 1648 } else if (splitData[n].equals(TRUNCATED)) { 1649 batchedScanResult.truncated = true; 1650 } else if (splitData[n].startsWith(BSSID_STR)) { 1651 bssid = new String(splitData[n].getBytes(), bssidStrLen, 1652 splitData[n].length() - bssidStrLen); 1653 } else if (splitData[n].startsWith(FREQ_STR)) { 1654 try { 1655 freq = Integer.parseInt(splitData[n].substring(FREQ_STR.length())); 1656 } catch (NumberFormatException e) { 1657 loge("Invalid freqency: " + splitData[n]); 1658 freq = 0; 1659 } 1660 } else if (splitData[n].startsWith(AGE)) { 1661 try { 1662 tsf = now - Long.parseLong(splitData[n].substring(AGE.length())); 1663 tsf *= 1000; // convert mS -> uS 1664 } catch (NumberFormatException e) { 1665 loge("Invalid timestamp: " + splitData[n]); 1666 tsf = 0; 1667 } 1668 } else if (splitData[n].startsWith(SSID_STR)) { 1669 wifiSsid = WifiSsid.createFromAsciiEncoded( 1670 splitData[n].substring(SSID_STR.length())); 1671 } else if (splitData[n].startsWith(LEVEL_STR)) { 1672 try { 1673 level = Integer.parseInt(splitData[n].substring(LEVEL_STR.length())); 1674 if (level > 0) level -= 256; 1675 } catch (NumberFormatException e) { 1676 loge("Invalid level: " + splitData[n]); 1677 level = 0; 1678 } 1679 } else if (splitData[n].startsWith(DIST)) { 1680 try { 1681 dist = Integer.parseInt(splitData[n].substring(DIST.length())); 1682 } catch (NumberFormatException e) { 1683 loge("Invalid distance: " + splitData[n]); 1684 dist = ScanResult.UNSPECIFIED; 1685 } 1686 } else if (splitData[n].startsWith(DISTSD)) { 1687 try { 1688 distSd = Integer.parseInt(splitData[n].substring(DISTSD.length())); 1689 } catch (NumberFormatException e) { 1690 loge("Invalid distanceSd: " + splitData[n]); 1691 distSd = ScanResult.UNSPECIFIED; 1692 } 1693 } else { 1694 loge("Unable to parse batched scan result line: " + splitData[n]); 1695 } 1696 n++; 1697 } 1698 rawData = mWifiNative.getBatchedScanResults(); 1699 if (DEBUG_PARSE) log("reading more data:\n" + rawData); 1700 if (rawData == null) { 1701 loge("Unexpected null BatchedScanResults"); 1702 return; 1703 } 1704 splitData = rawData.split("\n"); 1705 if (splitData.length == 0 || splitData[0].equals("ok")) { 1706 loge("batch scan results just ended!"); 1707 if (mBatchedScanResults.size() > 0) { 1708 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1709 } 1710 return; 1711 } 1712 n = 0; 1713 } 1714 } 1715 } 1716 1717 private long mDisconnectedTimeStamp = 0; 1718 1719 public long getDisconnectedTimeMilli() { 1720 if (getCurrentState() == mDisconnectedState 1721 && mDisconnectedTimeStamp != 0) { 1722 long now_ms = System.currentTimeMillis(); 1723 return now_ms - mDisconnectedTimeStamp; 1724 } 1725 return 0; 1726 } 1727 1728 // Keeping track of scan requests 1729 private long lastStartScanTimeStamp = 0; 1730 private long lastScanDuration = 0; 1731 // Last connect attempt is used to prevent scan requests: 1732 // - for a period of 10 seconds after attempting to connect 1733 private long lastConnectAttempt = 0; 1734 private String lastScanFreqs = null; 1735 1736 // For debugging, keep track of last message status handling 1737 // TODO, find an equivalent mechanism as part of parent class 1738 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1739 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1740 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1741 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1742 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1743 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1744 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1745 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1746 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1747 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1748 1749 private int messageHandlingStatus = 0; 1750 1751 //TODO: this is used only to track connection attempts, however the link state and packet per 1752 //TODO: second logic should be folded into that 1753 private boolean checkOrDeferScanAllowed(Message msg) { 1754 long now = System.currentTimeMillis(); 1755 if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { 1756 Message dmsg = Message.obtain(msg); 1757 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttempt)); 1758 return false; 1759 } 1760 return true; 1761 } 1762 1763 private int mOnTime = 0; 1764 private int mTxTime = 0; 1765 private int mRxTime = 0; 1766 private int mOnTimeStartScan = 0; 1767 private int mTxTimeStartScan = 0; 1768 private int mRxTimeStartScan = 0; 1769 private int mOnTimeScan = 0; 1770 private int mTxTimeScan = 0; 1771 private int mRxTimeScan = 0; 1772 private int mOnTimeThisScan = 0; 1773 private int mTxTimeThisScan = 0; 1774 private int mRxTimeThisScan = 0; 1775 1776 private int mOnTimeScreenStateChange = 0; 1777 private int mOnTimeAtLastReport = 0; 1778 private long lastOntimeReportTimeStamp = 0; 1779 private long lastScreenStateChangeTimeStamp = 0; 1780 private int mOnTimeLastReport = 0; 1781 private int mTxTimeLastReport = 0; 1782 private int mRxTimeLastReport = 0; 1783 1784 private long lastLinkLayerStatsUpdate = 0; 1785 1786 String reportOnTime() { 1787 long now = System.currentTimeMillis(); 1788 StringBuilder sb = new StringBuilder(); 1789 // Report stats since last report 1790 int on = mOnTime - mOnTimeLastReport; 1791 mOnTimeLastReport = mOnTime; 1792 int tx = mTxTime - mTxTimeLastReport; 1793 mTxTimeLastReport = mTxTime; 1794 int rx = mRxTime - mRxTimeLastReport; 1795 mRxTimeLastReport = mRxTime; 1796 int period = (int)(now - lastOntimeReportTimeStamp); 1797 lastOntimeReportTimeStamp = now; 1798 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1799 // Report stats since Screen State Changed 1800 on = mOnTime - mOnTimeScreenStateChange; 1801 period = (int)(now - lastScreenStateChangeTimeStamp); 1802 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1803 return sb.toString(); 1804 } 1805 1806 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1807 WifiLinkLayerStats stats = null; 1808 if (mWifiLinkLayerStatsSupported > 0) { 1809 String name = "wlan0"; 1810 stats = mWifiNative.getWifiLinkLayerStats(name); 1811 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1812 mWifiLinkLayerStatsSupported -= 1; 1813 } else if (stats != null) { 1814 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1815 mOnTime = stats.on_time; 1816 mTxTime = stats.tx_time; 1817 mRxTime = stats.rx_time; 1818 mRunningBeaconCount = stats.beacon_rx; 1819 if (dbg) { 1820 loge(stats.toString()); 1821 } 1822 } 1823 } 1824 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1825 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1826 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1827 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1828 } else { 1829 mWifiInfo.updatePacketRates(stats); 1830 } 1831 return stats; 1832 } 1833 1834 void startRadioScanStats() { 1835 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1836 if (stats != null) { 1837 mOnTimeStartScan = stats.on_time; 1838 mTxTimeStartScan = stats.tx_time; 1839 mRxTimeStartScan = stats.rx_time; 1840 mOnTime = stats.on_time; 1841 mTxTime = stats.tx_time; 1842 mRxTime = stats.rx_time; 1843 } 1844 } 1845 1846 void closeRadioScanStats() { 1847 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1848 if (stats != null) { 1849 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1850 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1851 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1852 mOnTimeScan += mOnTimeThisScan; 1853 mTxTimeScan += mTxTimeThisScan; 1854 mRxTimeScan += mRxTimeThisScan; 1855 } 1856 } 1857 1858 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1859 private void noteScanStart(int callingUid, WorkSource workSource) { 1860 long now = System.currentTimeMillis(); 1861 lastStartScanTimeStamp = now; 1862 lastScanDuration = 0; 1863 if (DBG) { 1864 String ts = String.format("[%,d ms]", now); 1865 if (workSource != null) { 1866 loge(ts + " noteScanStart" + workSource.toString() 1867 + " uid " + Integer.toString(callingUid)); 1868 } else { 1869 loge(ts + " noteScanstart no scan source" 1870 + " uid " + Integer.toString(callingUid)); 1871 } 1872 } 1873 startRadioScanStats(); 1874 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1875 && callingUid != SCAN_ALARM_SOURCE) 1876 || workSource != null)) { 1877 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1878 try { 1879 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 1880 } catch (RemoteException e) { 1881 log(e.toString()); 1882 } 1883 } 1884 } 1885 1886 private void noteScanEnd() { 1887 long now = System.currentTimeMillis(); 1888 if (lastStartScanTimeStamp != 0) { 1889 lastScanDuration = now - lastStartScanTimeStamp; 1890 } 1891 lastStartScanTimeStamp = 0; 1892 if (DBG) { 1893 String ts = String.format("[%,d ms]", now); 1894 if (mScanWorkSource != null) 1895 loge(ts + " noteScanEnd " + mScanWorkSource.toString() 1896 + " onTime=" + mOnTimeThisScan); 1897 else 1898 loge(ts + " noteScanEnd no scan source" 1899 + " onTime=" + mOnTimeThisScan); 1900 } 1901 if (mScanWorkSource != null) { 1902 try { 1903 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1904 } catch (RemoteException e) { 1905 log(e.toString()); 1906 } finally { 1907 mScanWorkSource = null; 1908 } 1909 } 1910 } 1911 1912 private void noteBatchedScanStart() { 1913 if (PDBG) loge("noteBatchedScanstart()"); 1914 // note the end of a previous scan set 1915 if (mNotedBatchedScanWorkSource != null && 1916 (mNotedBatchedScanWorkSource.equals(mBatchedScanWorkSource) == false || 1917 mNotedBatchedScanCsph != mBatchedScanCsph)) { 1918 try { 1919 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1920 } catch (RemoteException e) { 1921 log(e.toString()); 1922 } finally { 1923 mNotedBatchedScanWorkSource = null; 1924 mNotedBatchedScanCsph = 0; 1925 } 1926 } 1927 // note the start of the new 1928 try { 1929 mBatteryStats.noteWifiBatchedScanStartedFromSource(mBatchedScanWorkSource, 1930 mBatchedScanCsph); 1931 mNotedBatchedScanWorkSource = mBatchedScanWorkSource; 1932 mNotedBatchedScanCsph = mBatchedScanCsph; 1933 } catch (RemoteException e) { 1934 log(e.toString()); 1935 } 1936 } 1937 1938 private void noteBatchedScanStop() { 1939 if (PDBG) loge("noteBatchedScanstop()"); 1940 1941 if (mNotedBatchedScanWorkSource != null) { 1942 try { 1943 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1944 } catch (RemoteException e) { 1945 log(e.toString()); 1946 } finally { 1947 mNotedBatchedScanWorkSource = null; 1948 mNotedBatchedScanCsph = 0; 1949 } 1950 } 1951 } 1952 1953 private void handleScanRequest(int type, Message message) { 1954 ScanSettings settings = null; 1955 WorkSource workSource = null; 1956 1957 // unbundle parameters 1958 Bundle bundle = (Bundle) message.obj; 1959 1960 if (bundle != null) { 1961 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1962 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1963 } 1964 1965 // parse scan settings 1966 String freqs = null; 1967 if (settings != null && settings.channelSet != null) { 1968 StringBuilder sb = new StringBuilder(); 1969 boolean first = true; 1970 for (WifiChannel channel : settings.channelSet) { 1971 if (!first) sb.append(','); else first = false; 1972 sb.append(channel.freqMHz); 1973 } 1974 freqs = sb.toString(); 1975 } 1976 1977 // call wifi native to start the scan 1978 if (startScanNative(type, freqs)) { 1979 // only count battery consumption if scan request is accepted 1980 noteScanStart(message.arg1, workSource); 1981 // a full scan covers everything, clearing scan request buffer 1982 if (freqs == null) 1983 mBufferedScanMsg.clear(); 1984 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1985 if (workSource != null) { 1986 // External worksource was passed along the scan request, 1987 // hence always send a broadcast 1988 mSendScanResultsBroadcast = true; 1989 } 1990 return; 1991 } 1992 1993 // if reach here, scan request is rejected 1994 1995 if (!mIsScanOngoing) { 1996 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1997 1998 // discard this request and pop up the next one 1999 if (mBufferedScanMsg.size() > 0) { 2000 sendMessage(mBufferedScanMsg.remove()); 2001 } 2002 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 2003 } else if (!mIsFullScanOngoing) { 2004 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 2005 // buffer the scan request to make sure specified channels will be scanned eventually 2006 if (freqs == null) 2007 mBufferedScanMsg.clear(); 2008 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 2009 Message msg = obtainMessage(CMD_START_SCAN, 2010 message.arg1, message.arg2, bundle); 2011 mBufferedScanMsg.add(msg); 2012 } else { 2013 // if too many requests in buffer, combine them into a single full scan 2014 bundle = new Bundle(); 2015 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 2016 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 2017 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 2018 mBufferedScanMsg.clear(); 2019 mBufferedScanMsg.add(msg); 2020 } 2021 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 2022 } else { 2023 // mIsScanOngoing and mIsFullScanOngoing 2024 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 2025 } 2026 } 2027 2028 2029 /** return true iff scan request is accepted */ 2030 private boolean startScanNative(int type, String freqs) { 2031 if (mWifiNative.scan(type, freqs)) { 2032 mIsScanOngoing = true; 2033 mIsFullScanOngoing = (freqs == null); 2034 lastScanFreqs = freqs; 2035 return true; 2036 } 2037 return false; 2038 } 2039 2040 /** 2041 * TODO: doc 2042 */ 2043 public void setSupplicantRunning(boolean enable) { 2044 if (enable) { 2045 sendMessage(CMD_START_SUPPLICANT); 2046 } else { 2047 sendMessage(CMD_STOP_SUPPLICANT); 2048 } 2049 } 2050 2051 /** 2052 * TODO: doc 2053 */ 2054 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 2055 if (enable) { 2056 sendMessage(CMD_START_AP, wifiConfig); 2057 } else { 2058 sendMessage(CMD_STOP_AP); 2059 } 2060 } 2061 2062 public void setWifiApConfiguration(WifiConfiguration config) { 2063 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 2064 } 2065 2066 public WifiConfiguration syncGetWifiApConfiguration() { 2067 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 2068 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 2069 resultMsg.recycle(); 2070 return ret; 2071 } 2072 2073 /** 2074 * TODO: doc 2075 */ 2076 public int syncGetWifiState() { 2077 return mWifiState.get(); 2078 } 2079 2080 /** 2081 * TODO: doc 2082 */ 2083 public String syncGetWifiStateByName() { 2084 switch (mWifiState.get()) { 2085 case WIFI_STATE_DISABLING: 2086 return "disabling"; 2087 case WIFI_STATE_DISABLED: 2088 return "disabled"; 2089 case WIFI_STATE_ENABLING: 2090 return "enabling"; 2091 case WIFI_STATE_ENABLED: 2092 return "enabled"; 2093 case WIFI_STATE_UNKNOWN: 2094 return "unknown state"; 2095 default: 2096 return "[invalid state]"; 2097 } 2098 } 2099 2100 /** 2101 * TODO: doc 2102 */ 2103 public int syncGetWifiApState() { 2104 return mWifiApState.get(); 2105 } 2106 2107 /** 2108 * TODO: doc 2109 */ 2110 public String syncGetWifiApStateByName() { 2111 switch (mWifiApState.get()) { 2112 case WIFI_AP_STATE_DISABLING: 2113 return "disabling"; 2114 case WIFI_AP_STATE_DISABLED: 2115 return "disabled"; 2116 case WIFI_AP_STATE_ENABLING: 2117 return "enabling"; 2118 case WIFI_AP_STATE_ENABLED: 2119 return "enabled"; 2120 case WIFI_AP_STATE_FAILED: 2121 return "failed"; 2122 default: 2123 return "[invalid state]"; 2124 } 2125 } 2126 2127 /** 2128 * Get status information for the current connection, if any. 2129 * @return a {@link WifiInfo} object containing information about the current connection 2130 * 2131 */ 2132 public WifiInfo syncRequestConnectionInfo() { 2133 return mWifiInfo; 2134 } 2135 2136 public DhcpResults syncGetDhcpResults() { 2137 synchronized (mDhcpResultsLock) { 2138 return new DhcpResults(mDhcpResults); 2139 } 2140 } 2141 2142 /** 2143 * TODO: doc 2144 */ 2145 public void setDriverStart(boolean enable) { 2146 if (enable) { 2147 sendMessage(CMD_START_DRIVER); 2148 } else { 2149 sendMessage(CMD_STOP_DRIVER); 2150 } 2151 } 2152 2153 /** 2154 * TODO: doc 2155 */ 2156 public void setOperationalMode(int mode) { 2157 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2158 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2159 } 2160 2161 /** 2162 * TODO: doc 2163 */ 2164 public List<ScanResult> syncGetScanResultsList() { 2165 synchronized (mScanResultCache) { 2166 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2167 for(ScanDetail result: mScanResults) { 2168 scanList.add(new ScanResult(result.getScanResult())); 2169 } 2170 return scanList; 2171 } 2172 } 2173 2174 public void disableEphemeralNetwork(String SSID) { 2175 if (SSID != null) { 2176 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2177 } 2178 } 2179 2180 /** 2181 * Get unsynchronized pointer to scan result list 2182 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2183 */ 2184 public List<ScanDetail> getScanResultsListNoCopyUnsync() { 2185 return mScanResults; 2186 } 2187 2188 /** 2189 * Disconnect from Access Point 2190 */ 2191 public void disconnectCommand() { 2192 sendMessage(CMD_DISCONNECT); 2193 } 2194 2195 public void disconnectCommand(int uid, int reason) { 2196 sendMessage(CMD_DISCONNECT, uid, reason); 2197 } 2198 2199 /** 2200 * Initiate a reconnection to AP 2201 */ 2202 public void reconnectCommand() { 2203 sendMessage(CMD_RECONNECT); 2204 } 2205 2206 /** 2207 * Initiate a re-association to AP 2208 */ 2209 public void reassociateCommand() { 2210 sendMessage(CMD_REASSOCIATE); 2211 } 2212 2213 /** 2214 * Reload networks and then reconnect; helps load correct data for TLS networks 2215 */ 2216 2217 public void reloadTlsNetworksAndReconnect() { 2218 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2219 } 2220 2221 /** 2222 * Add a network synchronously 2223 * 2224 * @return network id of the new network 2225 */ 2226 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2227 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2228 int result = resultMsg.arg1; 2229 resultMsg.recycle(); 2230 return result; 2231 } 2232 2233 /** 2234 * Get configured networks synchronously 2235 * @param channel 2236 * @return 2237 */ 2238 2239 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2240 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2241 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2242 resultMsg.recycle(); 2243 return result; 2244 } 2245 2246 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2247 Message resultMsg = channel.sendMessageSynchronously( 2248 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2249 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2250 resultMsg.recycle(); 2251 return result; 2252 } 2253 2254 2255 /** 2256 * Get connection statistics synchronously 2257 * @param channel 2258 * @return 2259 */ 2260 2261 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2262 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2263 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2264 resultMsg.recycle(); 2265 return result; 2266 } 2267 2268 /** 2269 * Get adaptors synchronously 2270 */ 2271 2272 public int syncGetSupportedFeatures(AsyncChannel channel) { 2273 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2274 int supportedFeatureSet = resultMsg.arg1; 2275 resultMsg.recycle(); 2276 return supportedFeatureSet; 2277 } 2278 2279 /** 2280 * Get link layers stats for adapter synchronously 2281 */ 2282 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2283 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2284 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2285 resultMsg.recycle(); 2286 return result; 2287 } 2288 2289 /** 2290 * Delete a network 2291 * 2292 * @param networkId id of the network to be removed 2293 */ 2294 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2295 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2296 boolean result = (resultMsg.arg1 != FAILURE); 2297 resultMsg.recycle(); 2298 return result; 2299 } 2300 2301 /** 2302 * Enable a network 2303 * 2304 * @param netId network id of the network 2305 * @param disableOthers true, if all other networks have to be disabled 2306 * @return {@code true} if the operation succeeds, {@code false} otherwise 2307 */ 2308 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2309 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2310 disableOthers ? 1 : 0); 2311 boolean result = (resultMsg.arg1 != FAILURE); 2312 resultMsg.recycle(); 2313 return result; 2314 } 2315 2316 /** 2317 * Disable a network 2318 * 2319 * @param netId network id of the network 2320 * @return {@code true} if the operation succeeds, {@code false} otherwise 2321 */ 2322 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2323 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2324 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2325 resultMsg.recycle(); 2326 return result; 2327 } 2328 2329 /** 2330 * Retrieves a WPS-NFC configuration token for the specified network 2331 * @return a hex string representation of the WPS-NFC configuration token 2332 */ 2333 public String syncGetWpsNfcConfigurationToken(int netId) { 2334 return mWifiNative.getNfcWpsConfigurationToken(netId); 2335 } 2336 2337 void enableBackgroundScan(boolean enable) { 2338 if (enable) { 2339 mWifiConfigStore.enableAllNetworks(); 2340 } 2341 mWifiNative.enableBackgroundScan(enable); 2342 } 2343 2344 /** 2345 * Blacklist a BSSID. This will avoid the AP if there are 2346 * alternate APs to connect 2347 * 2348 * @param bssid BSSID of the network 2349 */ 2350 public void addToBlacklist(String bssid) { 2351 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2352 } 2353 2354 /** 2355 * Clear the blacklist list 2356 * 2357 */ 2358 public void clearBlacklist() { 2359 sendMessage(CMD_CLEAR_BLACKLIST); 2360 } 2361 2362 public void enableRssiPolling(boolean enabled) { 2363 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2364 } 2365 2366 public void enableAllNetworks() { 2367 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2368 } 2369 2370 /** 2371 * Start filtering Multicast v4 packets 2372 */ 2373 public void startFilteringMulticastV4Packets() { 2374 mFilteringMulticastV4Packets.set(true); 2375 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2376 } 2377 2378 /** 2379 * Stop filtering Multicast v4 packets 2380 */ 2381 public void stopFilteringMulticastV4Packets() { 2382 mFilteringMulticastV4Packets.set(false); 2383 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2384 } 2385 2386 /** 2387 * Start filtering Multicast v4 packets 2388 */ 2389 public void startFilteringMulticastV6Packets() { 2390 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2391 } 2392 2393 /** 2394 * Stop filtering Multicast v4 packets 2395 */ 2396 public void stopFilteringMulticastV6Packets() { 2397 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2398 } 2399 2400 /** 2401 * Set high performance mode of operation. 2402 * Enabling would set active power mode and disable suspend optimizations; 2403 * disabling would set auto power mode and enable suspend optimizations 2404 * @param enable true if enable, false otherwise 2405 */ 2406 public void setHighPerfModeEnabled(boolean enable) { 2407 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2408 } 2409 2410 /** 2411 * Set the country code 2412 * @param countryCode following ISO 3166 format 2413 * @param persist {@code true} if the setting should be remembered. 2414 */ 2415 public synchronized void setCountryCode(String countryCode, boolean persist) { 2416 // If it's a good country code, apply after the current 2417 // wifi connection is terminated; ignore resetting of code 2418 // for now (it is unclear what the chipset should do when 2419 // country code is reset) 2420 2421 if (TextUtils.isEmpty(countryCode)) { 2422 log("Ignoring resetting of country code"); 2423 } else { 2424 // if mCountryCodeSequence == 0, it is the first time to set country code, always set 2425 // else only when the new country code is different from the current one to set 2426 int countryCodeSequence = mCountryCodeSequence.get(); 2427 if(countryCodeSequence == 0 || countryCode.equals(mSetCountryCode) == false) { 2428 2429 countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2430 mSetCountryCode = countryCode; 2431 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, 2432 countryCode); 2433 } 2434 2435 if (persist) { 2436 Settings.Global.putString(mContext.getContentResolver(), 2437 Settings.Global.WIFI_COUNTRY_CODE, 2438 countryCode); 2439 } 2440 } 2441 } 2442 2443 /** 2444 * Get the country code 2445 * @param countryCode following ISO 3166 format 2446 */ 2447 public String getCountryCode() { 2448 return mSetCountryCode; 2449 } 2450 2451 2452 /** 2453 * Set the operational frequency band 2454 * @param band 2455 * @param persist {@code true} if the setting should be remembered. 2456 */ 2457 public void setFrequencyBand(int band, boolean persist) { 2458 if (persist) { 2459 Settings.Global.putInt(mContext.getContentResolver(), 2460 Settings.Global.WIFI_FREQUENCY_BAND, 2461 band); 2462 } 2463 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2464 } 2465 2466 /** 2467 * Enable TDLS for a specific MAC address 2468 */ 2469 public void enableTdls(String remoteMacAddress, boolean enable) { 2470 int enabler = enable ? 1 : 0; 2471 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2472 } 2473 2474 /** 2475 * Returns the operational frequency band 2476 */ 2477 public int getFrequencyBand() { 2478 return mFrequencyBand.get(); 2479 } 2480 2481 /** 2482 * Returns the wifi configuration file 2483 */ 2484 public String getConfigFile() { 2485 return mWifiConfigStore.getConfigFile(); 2486 } 2487 2488 /** 2489 * Send a message indicating bluetooth adapter connection state changed 2490 */ 2491 public void sendBluetoothAdapterStateChange(int state) { 2492 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2493 } 2494 2495 /** 2496 * Send a message indicating a package has been uninstalled. 2497 */ 2498 public void removeAppConfigs(String packageName, int uid) { 2499 // Build partial AppInfo manually - package may not exist in database any more 2500 ApplicationInfo ai = new ApplicationInfo(); 2501 ai.packageName = packageName; 2502 ai.uid = uid; 2503 sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai); 2504 } 2505 2506 /** 2507 * Send a message indicating a user has been removed. 2508 */ 2509 public void removeUserConfigs(int userId) { 2510 sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId); 2511 } 2512 2513 /** 2514 * Save configuration on supplicant 2515 * 2516 * @return {@code true} if the operation succeeds, {@code false} otherwise 2517 * 2518 * TODO: deprecate this 2519 */ 2520 public boolean syncSaveConfig(AsyncChannel channel) { 2521 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2522 boolean result = (resultMsg.arg1 != FAILURE); 2523 resultMsg.recycle(); 2524 return result; 2525 } 2526 2527 public void updateBatteryWorkSource(WorkSource newSource) { 2528 synchronized (mRunningWifiUids) { 2529 try { 2530 if (newSource != null) { 2531 mRunningWifiUids.set(newSource); 2532 } 2533 if (mIsRunning) { 2534 if (mReportedRunning) { 2535 // If the work source has changed since last time, need 2536 // to remove old work from battery stats. 2537 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2538 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2539 mRunningWifiUids); 2540 mLastRunningWifiUids.set(mRunningWifiUids); 2541 } 2542 } else { 2543 // Now being started, report it. 2544 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2545 mLastRunningWifiUids.set(mRunningWifiUids); 2546 mReportedRunning = true; 2547 } 2548 } else { 2549 if (mReportedRunning) { 2550 // Last reported we were running, time to stop. 2551 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2552 mLastRunningWifiUids.clear(); 2553 mReportedRunning = false; 2554 } 2555 } 2556 mWakeLock.setWorkSource(newSource); 2557 } catch (RemoteException ignore) { 2558 } 2559 } 2560 } 2561 2562 @Override 2563 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2564 super.dump(fd, pw, args); 2565 mSupplicantStateTracker.dump(fd, pw, args); 2566 pw.println("mLinkProperties " + mLinkProperties); 2567 pw.println("mWifiInfo " + mWifiInfo); 2568 pw.println("mDhcpResults " + mDhcpResults); 2569 pw.println("mNetworkInfo " + mNetworkInfo); 2570 pw.println("mLastSignalLevel " + mLastSignalLevel); 2571 pw.println("mLastBssid " + mLastBssid); 2572 pw.println("mLastNetworkId " + mLastNetworkId); 2573 pw.println("mOperationalMode " + mOperationalMode); 2574 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2575 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2576 pw.println("Supplicant status " + mWifiNative.status(true)); 2577 pw.println("mEnableBackgroundScan " + mEnableBackgroundScan); 2578 pw.println("mSetCountryCode " + mSetCountryCode); 2579 pw.println("mDriverSetCountryCode " + mDriverSetCountryCode); 2580 mNetworkFactory.dump(fd, pw, args); 2581 mUntrustedNetworkFactory.dump(fd, pw, args); 2582 pw.println(); 2583 mWifiConfigStore.dump(fd, pw, args); 2584 } 2585 2586 /********************************************************* 2587 * Internal private functions 2588 ********************************************************/ 2589 2590 private void logStateAndMessage(Message message, String state) { 2591 messageHandlingStatus = 0; 2592 if (mLogMessages) { 2593 //long now = SystemClock.elapsedRealtimeNanos(); 2594 //String ts = String.format("[%,d us]", now/1000); 2595 2596 loge( " " + state + " " + getLogRecString(message)); 2597 } 2598 } 2599 2600 /** 2601 * helper, prints the milli time since boot wi and w/o suspended time 2602 */ 2603 String printTime() { 2604 StringBuilder sb = new StringBuilder(); 2605 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2606 sb.append("/").append(SystemClock.elapsedRealtime()); 2607 return sb.toString(); 2608 } 2609 2610 /** 2611 * Return the additional string to be logged by LogRec, default 2612 * 2613 * @param msg that was processed 2614 * @return information to be logged as a String 2615 */ 2616 protected String getLogRecString(Message msg) { 2617 WifiConfiguration config; 2618 Long now; 2619 String report; 2620 String key; 2621 StringBuilder sb = new StringBuilder(); 2622 if (mScreenOn) { 2623 sb.append("!"); 2624 } 2625 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2626 sb.append("(").append(messageHandlingStatus).append(")"); 2627 } 2628 sb.append(smToString(msg)); 2629 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2630 sb.append(" uid=" + msg.sendingUid); 2631 } 2632 switch (msg.what) { 2633 case CMD_START_SCAN: 2634 now = System.currentTimeMillis(); 2635 sb.append(" "); 2636 sb.append(Integer.toString(msg.arg1)); 2637 sb.append(" "); 2638 sb.append(Integer.toString(msg.arg2)); 2639 sb.append(" ic="); 2640 sb.append(Integer.toString(sScanAlarmIntentCount)); 2641 if (msg.obj != null) { 2642 Bundle bundle = (Bundle)msg.obj; 2643 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2644 if (request != 0) { 2645 sb.append(" proc(ms):").append(now - request); 2646 } 2647 } 2648 if (mIsScanOngoing) sb.append(" onGoing"); 2649 if (mIsFullScanOngoing) sb.append(" full"); 2650 if (lastStartScanTimeStamp != 0) { 2651 sb.append(" started:").append(lastStartScanTimeStamp); 2652 sb.append(",").append(now - lastStartScanTimeStamp); 2653 } 2654 if (lastScanDuration != 0) { 2655 sb.append(" dur:").append(lastScanDuration); 2656 } 2657 sb.append(" cnt=").append(mDelayedScanCounter); 2658 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2659 sb.append(" f=").append(mWifiInfo.getFrequency()); 2660 sb.append(" sc=").append(mWifiInfo.score); 2661 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2662 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2663 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2664 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2665 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2666 if (lastScanFreqs != null) { 2667 sb.append(" list=").append(lastScanFreqs); 2668 } else { 2669 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2670 } 2671 report = reportOnTime(); 2672 if (report != null) { 2673 sb.append(" ").append(report); 2674 } 2675 break; 2676 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2677 sb.append(" "); 2678 sb.append(Integer.toString(msg.arg1)); 2679 sb.append(" "); 2680 sb.append(Integer.toString(msg.arg2)); 2681 sb.append(printTime()); 2682 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2683 if (stateChangeResult != null) { 2684 sb.append(stateChangeResult.toString()); 2685 } 2686 break; 2687 case WifiManager.SAVE_NETWORK: 2688 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2689 sb.append(" "); 2690 sb.append(Integer.toString(msg.arg1)); 2691 sb.append(" "); 2692 sb.append(Integer.toString(msg.arg2)); 2693 if (lastSavedConfigurationAttempt != null) { 2694 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2695 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2696 if (lastSavedConfigurationAttempt.hiddenSSID) { 2697 sb.append(" hidden"); 2698 } 2699 if (lastSavedConfigurationAttempt.preSharedKey != null 2700 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2701 sb.append(" hasPSK"); 2702 } 2703 if (lastSavedConfigurationAttempt.ephemeral) { 2704 sb.append(" ephemeral"); 2705 } 2706 if (lastSavedConfigurationAttempt.selfAdded) { 2707 sb.append(" selfAdded"); 2708 } 2709 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2710 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2711 } 2712 break; 2713 case WifiManager.FORGET_NETWORK: 2714 sb.append(" "); 2715 sb.append(Integer.toString(msg.arg1)); 2716 sb.append(" "); 2717 sb.append(Integer.toString(msg.arg2)); 2718 if (lastForgetConfigurationAttempt != null) { 2719 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2720 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2721 if (lastForgetConfigurationAttempt.hiddenSSID) { 2722 sb.append(" hidden"); 2723 } 2724 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2725 sb.append(" hasPSK"); 2726 } 2727 if (lastForgetConfigurationAttempt.ephemeral) { 2728 sb.append(" ephemeral"); 2729 } 2730 if (lastForgetConfigurationAttempt.selfAdded) { 2731 sb.append(" selfAdded"); 2732 } 2733 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2734 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2735 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2736 } 2737 break; 2738 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2739 sb.append(" "); 2740 sb.append(Integer.toString(msg.arg1)); 2741 sb.append(" "); 2742 sb.append(Integer.toString(msg.arg2)); 2743 String bssid = (String)msg.obj; 2744 if (bssid != null && bssid.length()>0) { 2745 sb.append(" "); 2746 sb.append(bssid); 2747 } 2748 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2749 sb.append(printTime()); 2750 break; 2751 case WifiMonitor.SCAN_RESULTS_EVENT: 2752 sb.append(" "); 2753 sb.append(Integer.toString(msg.arg1)); 2754 sb.append(" "); 2755 sb.append(Integer.toString(msg.arg2)); 2756 if (mScanResults != null) { 2757 sb.append(" found="); 2758 sb.append(mScanResults.size()); 2759 } 2760 sb.append(" known=").append(mNumScanResultsKnown); 2761 sb.append(" got=").append(mNumScanResultsReturned); 2762 if (lastScanDuration != 0) { 2763 sb.append(" dur:").append(lastScanDuration); 2764 } 2765 if (mOnTime != 0) { 2766 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2767 sb.append(",").append(mOnTime); 2768 } 2769 if (mTxTime != 0) { 2770 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2771 sb.append(",").append(mTxTime); 2772 } 2773 if (mRxTime != 0) { 2774 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2775 sb.append(",").append(mRxTime); 2776 } 2777 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2778 sb.append(String.format(" con=%d", mConnectionRequests)); 2779 key = mWifiConfigStore.getLastSelectedConfiguration(); 2780 if (key != null) { 2781 sb.append(" last=").append(key); 2782 } 2783 break; 2784 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2785 sb.append(" "); 2786 sb.append(Integer.toString(msg.arg1)); 2787 sb.append(" "); 2788 sb.append(Integer.toString(msg.arg2)); 2789 sb.append(" ").append(mLastBssid); 2790 sb.append(" nid=").append(mLastNetworkId); 2791 config = getCurrentWifiConfiguration(); 2792 if (config != null) { 2793 sb.append(" ").append(config.configKey()); 2794 } 2795 sb.append(printTime()); 2796 key = mWifiConfigStore.getLastSelectedConfiguration(); 2797 if (key != null) { 2798 sb.append(" last=").append(key); 2799 } 2800 break; 2801 case CMD_TARGET_BSSID: 2802 case CMD_ASSOCIATED_BSSID: 2803 sb.append(" "); 2804 sb.append(Integer.toString(msg.arg1)); 2805 sb.append(" "); 2806 sb.append(Integer.toString(msg.arg2)); 2807 if (msg.obj != null) { 2808 sb.append(" BSSID=").append((String)msg.obj); 2809 } 2810 if (mTargetRoamBSSID != null) { 2811 sb.append(" Target=").append(mTargetRoamBSSID); 2812 } 2813 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2814 sb.append(printTime()); 2815 break; 2816 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2817 if (msg.obj != null) { 2818 sb.append(" ").append((String)msg.obj); 2819 } 2820 sb.append(" nid=").append(msg.arg1); 2821 sb.append(" reason=").append(msg.arg2); 2822 if (mLastBssid != null) { 2823 sb.append(" lastbssid=").append(mLastBssid); 2824 } 2825 if (mWifiInfo.getFrequency() != -1) { 2826 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2827 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2828 } 2829 if (linkDebouncing) { 2830 sb.append(" debounce"); 2831 } 2832 sb.append(printTime()); 2833 break; 2834 case WifiMonitor.SSID_TEMP_DISABLED: 2835 case WifiMonitor.SSID_REENABLED: 2836 sb.append(" nid=").append(msg.arg1); 2837 if (msg.obj != null) { 2838 sb.append(" ").append((String)msg.obj); 2839 } 2840 config = getCurrentWifiConfiguration(); 2841 if (config != null) { 2842 sb.append(" cur=").append(config.configKey()); 2843 sb.append(" ajst=").append(config.autoJoinStatus); 2844 if (config.selfAdded) { 2845 sb.append(" selfAdded"); 2846 } 2847 if (config.status != 0) { 2848 sb.append(" st=").append(config.status); 2849 sb.append(" rs=").append(config.disableReason); 2850 } 2851 if (config.lastConnected != 0) { 2852 now = System.currentTimeMillis(); 2853 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2854 } 2855 if (mLastBssid != null) { 2856 sb.append(" lastbssid=").append(mLastBssid); 2857 } 2858 if (mWifiInfo.getFrequency() != -1) { 2859 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2860 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2861 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2862 } 2863 } 2864 sb.append(printTime()); 2865 break; 2866 case CMD_RSSI_POLL: 2867 case CMD_UNWANTED_NETWORK: 2868 case WifiManager.RSSI_PKTCNT_FETCH: 2869 sb.append(" "); 2870 sb.append(Integer.toString(msg.arg1)); 2871 sb.append(" "); 2872 sb.append(Integer.toString(msg.arg2)); 2873 if (mWifiInfo.getSSID() != null) 2874 if (mWifiInfo.getSSID() != null) 2875 sb.append(" ").append(mWifiInfo.getSSID()); 2876 if (mWifiInfo.getBSSID() != null) 2877 sb.append(" ").append(mWifiInfo.getBSSID()); 2878 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2879 sb.append(" f=").append(mWifiInfo.getFrequency()); 2880 sb.append(" sc=").append(mWifiInfo.score); 2881 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2882 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2883 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2884 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2885 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2886 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2887 report = reportOnTime(); 2888 if (report != null) { 2889 sb.append(" ").append(report); 2890 } 2891 if (wifiScoringReport != null) { 2892 sb.append(wifiScoringReport); 2893 } 2894 break; 2895 case CMD_AUTO_CONNECT: 2896 case WifiManager.CONNECT_NETWORK: 2897 sb.append(" "); 2898 sb.append(Integer.toString(msg.arg1)); 2899 sb.append(" "); 2900 sb.append(Integer.toString(msg.arg2)); 2901 config = (WifiConfiguration) msg.obj; 2902 if (config != null) { 2903 sb.append(" ").append(config.configKey()); 2904 if (config.visibility != null) { 2905 sb.append(" ").append(config.visibility.toString()); 2906 } 2907 } 2908 if (mTargetRoamBSSID != null) { 2909 sb.append(" ").append(mTargetRoamBSSID); 2910 } 2911 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2912 sb.append(printTime()); 2913 config = getCurrentWifiConfiguration(); 2914 if (config != null) { 2915 sb.append(config.configKey()); 2916 if (config.visibility != null) { 2917 sb.append(" ").append(config.visibility.toString()); 2918 } 2919 } 2920 break; 2921 case CMD_AUTO_ROAM: 2922 sb.append(" "); 2923 sb.append(Integer.toString(msg.arg1)); 2924 sb.append(" "); 2925 sb.append(Integer.toString(msg.arg2)); 2926 ScanResult result = (ScanResult)msg.obj; 2927 if (result != null) { 2928 now = System.currentTimeMillis(); 2929 sb.append(" bssid=").append(result.BSSID); 2930 sb.append(" rssi=").append(result.level); 2931 sb.append(" freq=").append(result.frequency); 2932 if (result.seen > 0 && result.seen < now) { 2933 sb.append(" seen=").append(now - result.seen); 2934 } else { 2935 // Somehow the timestamp for this scan result is inconsistent 2936 sb.append(" !seen=").append(result.seen); 2937 } 2938 } 2939 if (mTargetRoamBSSID != null) { 2940 sb.append(" ").append(mTargetRoamBSSID); 2941 } 2942 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2943 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 2944 sb.append(printTime()); 2945 break; 2946 case CMD_ADD_OR_UPDATE_NETWORK: 2947 sb.append(" "); 2948 sb.append(Integer.toString(msg.arg1)); 2949 sb.append(" "); 2950 sb.append(Integer.toString(msg.arg2)); 2951 if (msg.obj != null) { 2952 config = (WifiConfiguration)msg.obj; 2953 sb.append(" ").append(config.configKey()); 2954 sb.append(" prio=").append(config.priority); 2955 sb.append(" status=").append(config.status); 2956 if (config.BSSID != null) { 2957 sb.append(" ").append(config.BSSID); 2958 } 2959 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 2960 if (curConfig != null) { 2961 if (curConfig.configKey().equals(config.configKey())) { 2962 sb.append(" is current"); 2963 } else { 2964 sb.append(" current=").append(curConfig.configKey()); 2965 sb.append(" prio=").append(curConfig.priority); 2966 sb.append(" status=").append(curConfig.status); 2967 } 2968 } 2969 } 2970 break; 2971 case WifiManager.DISABLE_NETWORK: 2972 case CMD_ENABLE_NETWORK: 2973 sb.append(" "); 2974 sb.append(Integer.toString(msg.arg1)); 2975 sb.append(" "); 2976 sb.append(Integer.toString(msg.arg2)); 2977 key = mWifiConfigStore.getLastSelectedConfiguration(); 2978 if (key != null) { 2979 sb.append(" last=").append(key); 2980 } 2981 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 2982 if (config != null && (key == null || !config.configKey().equals(key))) { 2983 sb.append(" target=").append(key); 2984 } 2985 break; 2986 case CMD_GET_CONFIGURED_NETWORKS: 2987 sb.append(" "); 2988 sb.append(Integer.toString(msg.arg1)); 2989 sb.append(" "); 2990 sb.append(Integer.toString(msg.arg2)); 2991 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 2992 break; 2993 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 2994 sb.append(" "); 2995 sb.append(Integer.toString(msg.arg1)); 2996 sb.append(" "); 2997 sb.append(Integer.toString(msg.arg2)); 2998 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2999 sb.append(",").append(mWifiInfo.txBad); 3000 sb.append(",").append(mWifiInfo.txRetries); 3001 break; 3002 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 3003 sb.append(" "); 3004 sb.append(Integer.toString(msg.arg1)); 3005 sb.append(" "); 3006 sb.append(Integer.toString(msg.arg2)); 3007 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 3008 sb.append(" OK "); 3009 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 3010 sb.append(" FAIL "); 3011 } 3012 if (mLinkProperties != null) { 3013 if (mLinkProperties.hasIPv4Address()) { 3014 sb.append(" v4"); 3015 } 3016 if (mLinkProperties.hasGlobalIPv6Address()) { 3017 sb.append(" v6"); 3018 } 3019 if (mLinkProperties.hasIPv4DefaultRoute()) { 3020 sb.append(" v4r"); 3021 } 3022 if (mLinkProperties.hasIPv6DefaultRoute()) { 3023 sb.append(" v6r"); 3024 } 3025 if (mLinkProperties.hasIPv4DnsServer()) { 3026 sb.append(" v4dns"); 3027 } 3028 if (mLinkProperties.hasIPv6DnsServer()) { 3029 sb.append(" v6dns"); 3030 } 3031 } 3032 break; 3033 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 3034 sb.append(" "); 3035 sb.append(Integer.toString(msg.arg1)); 3036 sb.append(" "); 3037 sb.append(Integer.toString(msg.arg2)); 3038 if (msg.obj != null) { 3039 NetworkInfo info = (NetworkInfo)msg.obj; 3040 NetworkInfo.State state = info.getState(); 3041 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 3042 if (state != null) { 3043 sb.append(" st=").append(state); 3044 } 3045 if (detailedState != null) { 3046 sb.append("/").append(detailedState); 3047 } 3048 } 3049 break; 3050 case CMD_IP_CONFIGURATION_LOST: 3051 int count = -1; 3052 WifiConfiguration c = getCurrentWifiConfiguration(); 3053 if (c != null) count = c.numIpConfigFailures; 3054 sb.append(" "); 3055 sb.append(Integer.toString(msg.arg1)); 3056 sb.append(" "); 3057 sb.append(Integer.toString(msg.arg2)); 3058 sb.append(" failures: "); 3059 sb.append(Integer.toString(count)); 3060 sb.append("/"); 3061 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 3062 if (mWifiInfo.getBSSID() != null) { 3063 sb.append(" ").append(mWifiInfo.getBSSID()); 3064 } 3065 if (c != null) { 3066 if (c.scanResultCache != null) { 3067 for (ScanResult r : c.scanResultCache.values()) { 3068 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 3069 sb.append(" ipfail=").append(r.numIpConfigFailures); 3070 sb.append(",st=").append(r.autoJoinStatus); 3071 } 3072 } 3073 } 3074 sb.append(" -> ajst=").append(c.autoJoinStatus); 3075 sb.append(" ").append(c.disableReason); 3076 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 3077 sb.append(",").append(mWifiInfo.txBad); 3078 sb.append(",").append(mWifiInfo.txRetries); 3079 } 3080 sb.append(printTime()); 3081 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 3082 break; 3083 case CMD_UPDATE_LINKPROPERTIES: 3084 sb.append(" "); 3085 sb.append(Integer.toString(msg.arg1)); 3086 sb.append(" "); 3087 sb.append(Integer.toString(msg.arg2)); 3088 if (mLinkProperties != null) { 3089 if (mLinkProperties.hasIPv4Address()) { 3090 sb.append(" v4"); 3091 } 3092 if (mLinkProperties.hasGlobalIPv6Address()) { 3093 sb.append(" v6"); 3094 } 3095 if (mLinkProperties.hasIPv4DefaultRoute()) { 3096 sb.append(" v4r"); 3097 } 3098 if (mLinkProperties.hasIPv6DefaultRoute()) { 3099 sb.append(" v6r"); 3100 } 3101 if (mLinkProperties.hasIPv4DnsServer()) { 3102 sb.append(" v4dns"); 3103 } 3104 if (mLinkProperties.hasIPv6DnsServer()) { 3105 sb.append(" v6dns"); 3106 } 3107 } 3108 break; 3109 case CMD_SET_COUNTRY_CODE: 3110 sb.append(" "); 3111 sb.append(Integer.toString(msg.arg1)); 3112 sb.append(" "); 3113 sb.append(Integer.toString(msg.arg2)); 3114 if (msg.obj != null) { 3115 sb.append(" ").append((String)msg.obj); 3116 } 3117 break; 3118 case CMD_ROAM_WATCHDOG_TIMER: 3119 sb.append(" "); 3120 sb.append(Integer.toString(msg.arg1)); 3121 sb.append(" "); 3122 sb.append(Integer.toString(msg.arg2)); 3123 sb.append(" cur=").append(roamWatchdogCount); 3124 break; 3125 case CMD_DISCONNECTING_WATCHDOG_TIMER: 3126 sb.append(" "); 3127 sb.append(Integer.toString(msg.arg1)); 3128 sb.append(" "); 3129 sb.append(Integer.toString(msg.arg2)); 3130 sb.append(" cur=").append(disconnectingWatchdogCount); 3131 break; 3132 default: 3133 sb.append(" "); 3134 sb.append(Integer.toString(msg.arg1)); 3135 sb.append(" "); 3136 sb.append(Integer.toString(msg.arg2)); 3137 break; 3138 } 3139 3140 return sb.toString(); 3141 } 3142 3143 private void handleScreenStateChanged(boolean screenOn, boolean startBackgroundScanIfNeeded) { 3144 mScreenOn = screenOn; 3145 if (PDBG) { 3146 loge(" handleScreenStateChanged Enter: screenOn=" + screenOn 3147 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3148 + " state " + getCurrentState().getName() 3149 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3150 } 3151 enableRssiPolling(screenOn); 3152 if (screenOn) enableAllNetworks(); 3153 if (mUserWantsSuspendOpt.get()) { 3154 if (screenOn) { 3155 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3156 } else { 3157 // Allow 2s for suspend optimizations to be set 3158 mSuspendWakeLock.acquire(2000); 3159 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3160 } 3161 } 3162 mScreenBroadcastReceived.set(true); 3163 3164 getWifiLinkLayerStats(false); 3165 mOnTimeScreenStateChange = mOnTime; 3166 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3167 mEnableBackgroundScan = false; 3168 cancelDelayedScan(); 3169 3170 if (screenOn) { 3171 setScanAlarm(false); 3172 clearBlacklist(); 3173 3174 fullBandConnectedTimeIntervalMilli = mWifiConfigStore.associatedPartialScanPeriodMilli.get(); 3175 // In either Disconnectedstate or ConnectedState, 3176 // start the scan alarm so as to enable autojoin 3177 if (getCurrentState() == mConnectedState 3178 && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 3179 // Scan after 500ms 3180 startDelayedScan(500, null, null); 3181 } else if (getCurrentState() == mDisconnectedState) { 3182 // Scan after 200ms 3183 startDelayedScan(200, null, null); 3184 } 3185 } else if (startBackgroundScanIfNeeded) { 3186 // Screen Off and Disconnected and chipset doesn't support scan offload 3187 // => start scan alarm 3188 // Screen Off and Disconnected and chipset does support scan offload 3189 // => will use scan offload (i.e. background scan) 3190 if (!mBackgroundScanSupported) { 3191 setScanAlarm(true); 3192 } else { 3193 mEnableBackgroundScan = true; 3194 } 3195 } 3196 if (DBG) logd("backgroundScan enabled=" + mEnableBackgroundScan 3197 + " startBackgroundScanIfNeeded:" + startBackgroundScanIfNeeded); 3198 if (startBackgroundScanIfNeeded) { 3199 // to scan for them in background, we need all networks enabled 3200 enableBackgroundScan(mEnableBackgroundScan); 3201 } 3202 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3203 } 3204 3205 private void checkAndSetConnectivityInstance() { 3206 if (mCm == null) { 3207 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3208 } 3209 } 3210 3211 private boolean startTethering(ArrayList<String> available) { 3212 3213 boolean wifiAvailable = false; 3214 3215 checkAndSetConnectivityInstance(); 3216 3217 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3218 3219 for (String intf : available) { 3220 for (String regex : wifiRegexs) { 3221 if (intf.matches(regex)) { 3222 3223 InterfaceConfiguration ifcg = null; 3224 try { 3225 ifcg = mNwService.getInterfaceConfig(intf); 3226 if (ifcg != null) { 3227 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3228 ifcg.setLinkAddress(new LinkAddress( 3229 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3230 ifcg.setInterfaceUp(); 3231 3232 mNwService.setInterfaceConfig(intf, ifcg); 3233 } 3234 } catch (Exception e) { 3235 loge("Error configuring interface " + intf + ", :" + e); 3236 return false; 3237 } 3238 3239 if(mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3240 loge("Error tethering on " + intf); 3241 return false; 3242 } 3243 mTetherInterfaceName = intf; 3244 return true; 3245 } 3246 } 3247 } 3248 // We found no interfaces to tether 3249 return false; 3250 } 3251 3252 private void stopTethering() { 3253 3254 checkAndSetConnectivityInstance(); 3255 3256 /* Clear the interface config to allow dhcp correctly configure new 3257 ip settings */ 3258 InterfaceConfiguration ifcg = null; 3259 try { 3260 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3261 if (ifcg != null) { 3262 ifcg.setLinkAddress( 3263 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3264 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3265 } 3266 } catch (Exception e) { 3267 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3268 } 3269 3270 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3271 loge("Untether initiate failed!"); 3272 } 3273 } 3274 3275 private boolean isWifiTethered(ArrayList<String> active) { 3276 3277 checkAndSetConnectivityInstance(); 3278 3279 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3280 for (String intf : active) { 3281 for (String regex : wifiRegexs) { 3282 if (intf.matches(regex)) { 3283 return true; 3284 } 3285 } 3286 } 3287 // We found no interfaces that are tethered 3288 return false; 3289 } 3290 3291 /** 3292 * Set the country code from the system setting value, if any. 3293 */ 3294 private void setCountryCode() { 3295 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 3296 Settings.Global.WIFI_COUNTRY_CODE); 3297 if (countryCode != null && !countryCode.isEmpty()) { 3298 setCountryCode(countryCode, false); 3299 } else { 3300 //use driver default 3301 } 3302 } 3303 3304 /** 3305 * Set the frequency band from the system setting value, if any. 3306 */ 3307 private void setFrequencyBand() { 3308 int band = Settings.Global.getInt(mContext.getContentResolver(), 3309 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3310 setFrequencyBand(band, false); 3311 } 3312 3313 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3314 if (DBG) { 3315 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3316 + " -want " + mUserWantsSuspendOpt.get() 3317 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3318 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 3319 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 3320 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 3321 } 3322 //mWifiNative.setSuspendOptimizations(enabled); 3323 3324 if (enabled) { 3325 mSuspendOptNeedsDisabled &= ~reason; 3326 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3327 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3328 if (DBG) { 3329 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3330 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3331 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 3332 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 3333 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 3334 } 3335 mWifiNative.setSuspendOptimizations(true); 3336 } 3337 } else { 3338 mSuspendOptNeedsDisabled |= reason; 3339 mWifiNative.setSuspendOptimizations(false); 3340 } 3341 } 3342 3343 private void setSuspendOptimizations(int reason, boolean enabled) { 3344 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3345 if (enabled) { 3346 mSuspendOptNeedsDisabled &= ~reason; 3347 } else { 3348 mSuspendOptNeedsDisabled |= reason; 3349 } 3350 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3351 } 3352 3353 private void setWifiState(int wifiState) { 3354 final int previousWifiState = mWifiState.get(); 3355 3356 try { 3357 if (wifiState == WIFI_STATE_ENABLED) { 3358 mBatteryStats.noteWifiOn(); 3359 } else if (wifiState == WIFI_STATE_DISABLED) { 3360 mBatteryStats.noteWifiOff(); 3361 } 3362 } catch (RemoteException e) { 3363 loge("Failed to note battery stats in wifi"); 3364 } 3365 3366 mWifiState.set(wifiState); 3367 3368 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3369 3370 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3371 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3372 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3373 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3374 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3375 } 3376 3377 private void setWifiApState(int wifiApState) { 3378 final int previousWifiApState = mWifiApState.get(); 3379 3380 try { 3381 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3382 mBatteryStats.noteWifiOn(); 3383 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3384 mBatteryStats.noteWifiOff(); 3385 } 3386 } catch (RemoteException e) { 3387 loge("Failed to note battery stats in wifi"); 3388 } 3389 3390 // Update state 3391 mWifiApState.set(wifiApState); 3392 3393 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3394 3395 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3396 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3397 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3398 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3399 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3400 } 3401 3402 /* 3403 void ageOutScanResults(int age) { 3404 synchronized(mScanResultCache) { 3405 // Trim mScanResults, which prevent WifiStateMachine to return 3406 // obsolete scan results to queriers 3407 long now = System.CurrentTimeMillis(); 3408 for (int i = 0; i < mScanResults.size(); i++) { 3409 ScanResult result = mScanResults.get(i); 3410 if ((result.seen > now || (now - result.seen) > age)) { 3411 mScanResults.remove(i); 3412 } 3413 } 3414 } 3415 }*/ 3416 3417 private static final String IE_STR = "ie="; 3418 private static final String ID_STR = "id="; 3419 private static final String BSSID_STR = "bssid="; 3420 private static final String FREQ_STR = "freq="; 3421 private static final String LEVEL_STR = "level="; 3422 private static final String TSF_STR = "tsf="; 3423 private static final String FLAGS_STR = "flags="; 3424 private static final String SSID_STR = "ssid="; 3425 private static final String DELIMITER_STR = "===="; 3426 private static final String END_STR = "####"; 3427 3428 int emptyScanResultCount = 0; 3429 3430 // Used for matching BSSID strings, at least one characteer must be a non-zero number 3431 private static Pattern mNotZero = Pattern.compile("[1-9a-fA-F]"); 3432 3433 /** 3434 * Format: 3435 * 3436 * id=1 3437 * bssid=68:7f:76:d7:1a:6e 3438 * freq=2412 3439 * level=-44 3440 * tsf=1344626243700342 3441 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3442 * ssid=zfdy 3443 * ==== 3444 * id=2 3445 * bssid=68:5f:74:d7:1a:6f 3446 * freq=5180 3447 * level=-73 3448 * tsf=1344626243700373 3449 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3450 * ssid=zuby 3451 * ==== 3452 */ 3453 private void setScanResults() { 3454 mNumScanResultsKnown = 0; 3455 mNumScanResultsReturned = 0; 3456 String bssid = ""; 3457 int level = 0; 3458 int freq = 0; 3459 long tsf = 0; 3460 String flags = ""; 3461 WifiSsid wifiSsid = null; 3462 String scanResults; 3463 String tmpResults; 3464 StringBuffer scanResultsBuf = new StringBuffer(); 3465 int sid = 0; 3466 3467 while (true) { 3468 tmpResults = mWifiNative.scanResults(sid); 3469 if (TextUtils.isEmpty(tmpResults)) break; 3470 scanResultsBuf.append(tmpResults); 3471 scanResultsBuf.append("\n"); 3472 String[] lines = tmpResults.split("\n"); 3473 sid = -1; 3474 for (int i=lines.length - 1; i >= 0; i--) { 3475 if (lines[i].startsWith(END_STR)) { 3476 break; 3477 } else if (lines[i].startsWith(ID_STR)) { 3478 try { 3479 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3480 } catch (NumberFormatException e) { 3481 // Nothing to do 3482 } 3483 break; 3484 } 3485 } 3486 if (sid == -1) break; 3487 } 3488 3489 // Age out scan results, we return all scan results found in the last 12 seconds, 3490 // and NOT all scan results since last scan. 3491 // ageOutScanResults(12000); 3492 3493 scanResults = scanResultsBuf.toString(); 3494 if (TextUtils.isEmpty(scanResults)) { 3495 emptyScanResultCount++; 3496 if (emptyScanResultCount > 10) { 3497 // If we got too many empty scan results, the current scan cache is stale, 3498 // hence clear it. 3499 mScanResults = new ArrayList<>(); 3500 } 3501 return; 3502 } 3503 3504 emptyScanResultCount = 0; 3505 3506 // note that all these splits and substrings keep references to the original 3507 // huge string buffer while the amount we really want is generally pretty small 3508 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3509 synchronized(mScanResultCache) { 3510 mScanResults = new ArrayList<>(); 3511 String[] lines = scanResults.split("\n"); 3512 final int bssidStrLen = BSSID_STR.length(); 3513 final int flagLen = FLAGS_STR.length(); 3514 String infoElements = null; 3515 List<String> anqpLines = null; 3516 3517 for (String line : lines) { 3518 if (line.startsWith(BSSID_STR)) { 3519 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3520 } else if (line.startsWith(FREQ_STR)) { 3521 try { 3522 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3523 } catch (NumberFormatException e) { 3524 freq = 0; 3525 } 3526 } else if (line.startsWith(LEVEL_STR)) { 3527 try { 3528 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3529 /* some implementations avoid negative values by adding 256 3530 * so we need to adjust for that here. 3531 */ 3532 if (level > 0) level -= 256; 3533 } catch(NumberFormatException e) { 3534 level = 0; 3535 } 3536 } else if (line.startsWith(TSF_STR)) { 3537 try { 3538 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3539 } catch (NumberFormatException e) { 3540 tsf = 0; 3541 } 3542 } else if (line.startsWith(FLAGS_STR)) { 3543 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3544 } else if (line.startsWith(SSID_STR)) { 3545 wifiSsid = WifiSsid.createFromAsciiEncoded( 3546 line.substring(SSID_STR.length())); 3547 } else if (line.startsWith(IE_STR)) { 3548 infoElements = line; 3549 } else if (SupplicantBridge.isAnqpAttribute(line)) { 3550 if (anqpLines == null) { 3551 anqpLines = new ArrayList<>(); 3552 } 3553 anqpLines.add(line); 3554 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3555 if (bssid != null) { 3556 NetworkDetail networkDetail = 3557 new NetworkDetail(bssid, infoElements, anqpLines, freq); 3558 3559 String xssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3560 if (!xssid.equals(networkDetail.getSSID())) { 3561 Log.d("HS2J", "Inconsistency: SSID: '" + xssid + 3562 "' vs '" + networkDetail.getSSID() + "'"); 3563 } 3564 3565 ScanDetail scanDetail = mScanResultCache.get(networkDetail); 3566 if (scanDetail != null) { 3567 3568 scanDetail.updateResults(networkDetail, level, wifiSsid, xssid, flags, 3569 freq, tsf); 3570 } 3571 else { 3572 scanDetail = new ScanDetail(networkDetail, wifiSsid, bssid, 3573 flags, level, freq, tsf); 3574 mScanResultCache.put(networkDetail, scanDetail); 3575 } 3576 3577 mNumScanResultsReturned ++; // Keep track of how many scan results we got 3578 // as part of this scan's processing 3579 3580 mScanResults.add(scanDetail); 3581 } 3582 bssid = null; 3583 level = 0; 3584 freq = 0; 3585 tsf = 0; 3586 flags = ""; 3587 wifiSsid = null; 3588 infoElements = null; 3589 anqpLines = null; 3590 } 3591 } 3592 } 3593 3594 boolean attemptAutoJoin = true; 3595 SupplicantState state = mWifiInfo.getSupplicantState(); 3596 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 3597 if (getCurrentState() == mRoamingState 3598 || getCurrentState() == mObtainingIpState 3599 || getCurrentState() == mScanModeState 3600 || getCurrentState() == mDisconnectingState 3601 || (getCurrentState() == mConnectedState 3602 && !mWifiConfigStore.enableAutoJoinWhenAssociated.get()) 3603 || linkDebouncing 3604 || state == SupplicantState.ASSOCIATING 3605 || state == SupplicantState.AUTHENTICATING 3606 || state == SupplicantState.FOUR_WAY_HANDSHAKE 3607 || state == SupplicantState.GROUP_HANDSHAKE 3608 || (/* keep autojoin enabled if user has manually selected a wifi network, 3609 so as to make sure we reliably remain connected to this network */ 3610 mConnectionRequests == 0 && selection == null)) { 3611 // Dont attempt auto-joining again while we are already attempting to join 3612 // and/or obtaining Ip address 3613 attemptAutoJoin = false; 3614 } 3615 if (DBG) { 3616 if (selection == null) { 3617 selection = "<none>"; 3618 } 3619 loge("wifi setScanResults state" + getCurrentState() 3620 + " sup_state=" + state 3621 + " debouncing=" + linkDebouncing 3622 + " mConnectionRequests=" + mConnectionRequests 3623 + " selection=" + selection); 3624 } 3625 if (attemptAutoJoin) { 3626 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 3627 } 3628 // Loose last selected configuration if we have been disconnected for 5 minutes 3629 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 3630 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 3631 } 3632 3633 if (mWifiConfigStore.enableAutoJoinWhenAssociated.get()) { 3634 synchronized(mScanResultCache) { 3635 // AutoJoincontroller will directly acces the scan result list and update it with 3636 // ScanResult status 3637 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 3638 } 3639 } 3640 if (linkDebouncing) { 3641 // If debouncing, we dont re-select a SSID or BSSID hence 3642 // there is no need to call the network selection code 3643 // in WifiAutoJoinController, instead, 3644 // just try to reconnect to the same SSID by triggering a roam 3645 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3646 } 3647 } 3648 3649 /* 3650 * Fetch RSSI, linkspeed, and frequency on current connection 3651 */ 3652 private void fetchRssiLinkSpeedAndFrequencyNative() { 3653 int newRssi = -1; 3654 int newLinkSpeed = -1; 3655 int newFrequency = -1; 3656 3657 String signalPoll = mWifiNative.signalPoll(); 3658 3659 if (signalPoll != null) { 3660 String[] lines = signalPoll.split("\n"); 3661 for (String line : lines) { 3662 String[] prop = line.split("="); 3663 if (prop.length < 2) continue; 3664 try { 3665 if (prop[0].equals("RSSI")) { 3666 newRssi = Integer.parseInt(prop[1]); 3667 } else if (prop[0].equals("LINKSPEED")) { 3668 newLinkSpeed = Integer.parseInt(prop[1]); 3669 } else if (prop[0].equals("FREQUENCY")) { 3670 newFrequency = Integer.parseInt(prop[1]); 3671 } 3672 } catch (NumberFormatException e) { 3673 //Ignore, defaults on rssi and linkspeed are assigned 3674 } 3675 } 3676 } 3677 3678 if (PDBG) { 3679 loge("fetchRssiLinkSpeedAndFrequencyNative rssi=" 3680 + Integer.toString(newRssi) + " linkspeed=" 3681 + Integer.toString(newLinkSpeed)); 3682 } 3683 3684 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 3685 // screen out invalid values 3686 /* some implementations avoid negative values by adding 256 3687 * so we need to adjust for that here. 3688 */ 3689 if (newRssi > 0) newRssi -= 256; 3690 mWifiInfo.setRssi(newRssi); 3691 /* 3692 * Rather then sending the raw RSSI out every time it 3693 * changes, we precalculate the signal level that would 3694 * be displayed in the status bar, and only send the 3695 * broadcast if that much more coarse-grained number 3696 * changes. This cuts down greatly on the number of 3697 * broadcasts, at the cost of not informing others 3698 * interested in RSSI of all the changes in signal 3699 * level. 3700 */ 3701 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 3702 if (newSignalLevel != mLastSignalLevel) { 3703 sendRssiChangeBroadcast(newRssi); 3704 } 3705 mLastSignalLevel = newSignalLevel; 3706 } else { 3707 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 3708 } 3709 3710 if (newLinkSpeed != -1) { 3711 mWifiInfo.setLinkSpeed(newLinkSpeed); 3712 } 3713 if (newFrequency > 0) { 3714 if (ScanResult.is5GHz(newFrequency)) { 3715 mWifiConnectionStatistics.num5GhzConnected++; 3716 } 3717 if (ScanResult.is24GHz(newFrequency)) { 3718 mWifiConnectionStatistics.num24GhzConnected++; 3719 } 3720 mWifiInfo.setFrequency(newFrequency); 3721 } 3722 mWifiConfigStore.updateConfiguration(mWifiInfo); 3723 } 3724 3725 /** 3726 * Determine if we need to switch network: 3727 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 3728 * - match the uregncy of the switch versus the packet usage at the interface 3729 */ 3730 boolean shouldSwitchNetwork(int networkDelta) { 3731 int delta; 3732 if (networkDelta <= 0) { 3733 return false; 3734 } 3735 delta = networkDelta; 3736 if (mWifiInfo != null) { 3737 if (!mWifiConfigStore.enableAutoJoinWhenAssociated.get() 3738 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 3739 // If AutoJoin while associated is not enabled, 3740 // we should never switch network when already associated 3741 delta = -1000; 3742 } else { 3743 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 3744 // TODO: at the interface. We should also discriminate between ucast and mcast, 3745 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 3746 // TODO: broadcasts 3747 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 3748 delta -= 999; 3749 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 3750 delta -= 6; 3751 } 3752 loge("WifiStateMachine shouldSwitchNetwork " 3753 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3754 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3755 + " delta " + networkDelta + " -> " + delta); 3756 } 3757 } else { 3758 loge("WifiStateMachine shouldSwitchNetwork " 3759 + " delta " + networkDelta + " -> " + delta); 3760 } 3761 if (delta > 0) { 3762 return true; 3763 } 3764 return false; 3765 } 3766 3767 // Polling has completed, hence we wont have a score anymore 3768 private void cleanWifiScore() { 3769 mWifiInfo.txBadRate = 0; 3770 mWifiInfo.txSuccessRate = 0; 3771 mWifiInfo.txRetriesRate = 0; 3772 mWifiInfo.rxSuccessRate = 0; 3773 } 3774 3775 int mBadLinkspeedcount = 0; 3776 3777 // For debug, provide information about the last scoring operation 3778 String wifiScoringReport = null; 3779 private void calculateWifiScore(WifiLinkLayerStats stats) { 3780 StringBuilder sb = new StringBuilder(); 3781 3782 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 3783 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 3784 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 3785 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3786 < mWifiConfigStore.badLinkSpeed5); 3787 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 3788 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 3789 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3790 >= mWifiConfigStore.goodLinkSpeed5); 3791 3792 if (isBadLinkspeed) { 3793 if (mBadLinkspeedcount < 6) 3794 mBadLinkspeedcount++; 3795 } else { 3796 if (mBadLinkspeedcount > 0) 3797 mBadLinkspeedcount--; 3798 } 3799 3800 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 3801 if (isGoodLinkspeed) sb.append(" gl"); 3802 3803 /** 3804 * We want to make sure that we use the 24GHz RSSI thresholds if 3805 * there are 2.4GHz scan results 3806 * otherwise we end up lowering the score based on 5GHz values 3807 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 3808 * We also might unblacklist the configuation based on 2.4GHz 3809 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 3810 */ 3811 boolean use24Thresholds = false; 3812 boolean homeNetworkBoost = false; 3813 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 3814 if (currentConfiguration != null 3815 && currentConfiguration.scanResultCache != null) { 3816 currentConfiguration.setVisibility(12000); 3817 if (currentConfiguration.visibility != null) { 3818 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 3819 && currentConfiguration.visibility.rssi24 3820 >= (currentConfiguration.visibility.rssi5-2)) { 3821 use24Thresholds = true; 3822 } 3823 } 3824 if (currentConfiguration.scanResultCache.size() <= 6 3825 && currentConfiguration.allowedKeyManagement.cardinality() == 1 3826 && currentConfiguration.allowedKeyManagement. 3827 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 3828 // A PSK network with less than 6 known BSSIDs 3829 // This is most likely a home network and thus we want to stick to wifi more 3830 homeNetworkBoost = true; 3831 } 3832 } 3833 if (homeNetworkBoost) sb.append(" hn"); 3834 if (use24Thresholds) sb.append(" u24"); 3835 3836 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 3837 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 3838 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 3839 3840 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 3841 3842 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 3843 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 3844 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 3845 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 3846 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 3847 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 3848 3849 if (isBadRSSI) sb.append(" br"); 3850 if (isLowRSSI) sb.append(" lr"); 3851 if (isHighRSSI) sb.append(" hr"); 3852 3853 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 3854 if (currentConfiguration!= null && 3855 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 3856 if (isBadRSSI) { 3857 currentConfiguration.numTicksAtBadRSSI++; 3858 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 3859 // We remained associated for a compound amount of time while passing 3860 // traffic, hence loose the corresponding user triggered disabled stats 3861 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 3862 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 3863 } 3864 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3865 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3866 } 3867 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3868 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3869 } 3870 currentConfiguration.numTicksAtBadRSSI = 0; 3871 } 3872 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3873 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 3874 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3875 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3876 score = score -5; 3877 penalizedDueToUserTriggeredDisconnect = 1; 3878 sb.append(" p1"); 3879 } 3880 } else if (isLowRSSI) { 3881 currentConfiguration.numTicksAtLowRSSI++; 3882 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 3883 // We remained associated for a compound amount of time while passing 3884 // traffic, hence loose the corresponding user triggered disabled stats 3885 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3886 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3887 } 3888 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3889 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3890 } 3891 currentConfiguration.numTicksAtLowRSSI = 0; 3892 } 3893 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3894 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3895 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3896 score = score -5; 3897 penalizedDueToUserTriggeredDisconnect = 2; 3898 sb.append(" p2"); 3899 } 3900 } else if (!isHighRSSI) { 3901 currentConfiguration.numTicksAtNotHighRSSI++; 3902 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 3903 // We remained associated for a compound amount of time while passing 3904 // traffic, hence loose the corresponding user triggered disabled stats 3905 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3906 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3907 } 3908 currentConfiguration.numTicksAtNotHighRSSI = 0; 3909 } 3910 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3911 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3912 score = score -5; 3913 penalizedDueToUserTriggeredDisconnect = 3; 3914 sb.append(" p3"); 3915 } 3916 } 3917 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 3918 currentConfiguration.numTicksAtLowRSSI, 3919 currentConfiguration.numTicksAtNotHighRSSI)); 3920 } 3921 3922 if (PDBG) { 3923 String rssiStatus = ""; 3924 if (isBadRSSI) rssiStatus += " badRSSI "; 3925 else if (isHighRSSI) rssiStatus += " highRSSI "; 3926 else if (isLowRSSI) rssiStatus += " lowRSSI "; 3927 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 3928 loge("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 3929 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 3930 + " score=" + Integer.toString(mWifiInfo.score) 3931 + rssiStatus 3932 + " -> txbadrate=" + String.format( "%.2f", mWifiInfo.txBadRate ) 3933 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3934 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 3935 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3936 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 3937 } 3938 3939 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 3940 && (isBadRSSI || isLowRSSI)) { 3941 // Link is stuck 3942 if (mWifiInfo.linkStuckCount < 5) 3943 mWifiInfo.linkStuckCount += 1; 3944 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 3945 if (PDBG) loge(" bad link -> stuck count =" 3946 + Integer.toString(mWifiInfo.linkStuckCount)); 3947 } else if (mWifiInfo.txSuccessRate > 2 || mWifiInfo.txBadRate < 0.1) { 3948 if (mWifiInfo.linkStuckCount > 0) 3949 mWifiInfo.linkStuckCount -= 1; 3950 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 3951 if (PDBG) loge(" good link -> stuck count =" 3952 + Integer.toString(mWifiInfo.linkStuckCount)); 3953 } 3954 3955 sb.append(String.format(" [%d", score)); 3956 3957 if (mWifiInfo.linkStuckCount > 1) { 3958 // Once link gets stuck for more than 3 seconds, start reducing the score 3959 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 3960 } 3961 sb.append(String.format(",%d", score)); 3962 3963 if (isBadLinkspeed) { 3964 score -= 4 ; 3965 if (PDBG) { 3966 loge(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 3967 + " score=" + Integer.toString(score)); 3968 } 3969 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 3970 score += 4; // So as bad rssi alone dont kill us 3971 } 3972 sb.append(String.format(",%d", score)); 3973 3974 if (isBadRSSI) { 3975 if (mWifiInfo.badRssiCount < 7) 3976 mWifiInfo.badRssiCount += 1; 3977 } else if (isLowRSSI) { 3978 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 3979 if (mWifiInfo.badRssiCount > 0) { 3980 // Decrement bad Rssi count 3981 mWifiInfo.badRssiCount -= 1; 3982 } 3983 } else { 3984 mWifiInfo.badRssiCount = 0; 3985 mWifiInfo.lowRssiCount = 0; 3986 } 3987 3988 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount ; 3989 sb.append(String.format(",%d", score)); 3990 3991 if (PDBG) loge(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 3992 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 3993 + " --> score " + Integer.toString(score)); 3994 3995 3996 if (isHighRSSI) { 3997 score += 5; 3998 if (PDBG) loge(" isHighRSSI ---> score=" + Integer.toString(score)); 3999 } 4000 sb.append(String.format(",%d]", score)); 4001 4002 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 4003 4004 //sanitize boundaries 4005 if (score > NetworkAgent.WIFI_BASE_SCORE) 4006 score = NetworkAgent.WIFI_BASE_SCORE; 4007 if (score < 0) 4008 score = 0; 4009 4010 //report score 4011 if (score != mWifiInfo.score) { 4012 if (DBG) { 4013 loge("calculateWifiScore() report new score " + Integer.toString(score)); 4014 } 4015 mWifiInfo.score = score; 4016 if (mNetworkAgent != null) { 4017 mNetworkAgent.sendNetworkScore(score); 4018 } 4019 } 4020 wifiScoringReport = sb.toString(); 4021 } 4022 4023 public double getTxPacketRate() { 4024 if (mWifiInfo != null) { 4025 return mWifiInfo.txSuccessRate; 4026 } 4027 return -1; 4028 } 4029 4030 public double getRxPacketRate() { 4031 if (mWifiInfo != null) { 4032 return mWifiInfo.rxSuccessRate; 4033 } 4034 return -1; 4035 } 4036 4037 /** 4038 * Fetch TX packet counters on current connection 4039 */ 4040 private void fetchPktcntNative(RssiPacketCountInfo info) { 4041 String pktcntPoll = mWifiNative.pktcntPoll(); 4042 4043 if (pktcntPoll != null) { 4044 String[] lines = pktcntPoll.split("\n"); 4045 for (String line : lines) { 4046 String[] prop = line.split("="); 4047 if (prop.length < 2) continue; 4048 try { 4049 if (prop[0].equals("TXGOOD")) { 4050 info.txgood = Integer.parseInt(prop[1]); 4051 } else if (prop[0].equals("TXBAD")) { 4052 info.txbad = Integer.parseInt(prop[1]); 4053 } 4054 } catch (NumberFormatException e) { 4055 // Ignore 4056 } 4057 } 4058 } 4059 } 4060 4061 private boolean clearIPv4Address(String iface) { 4062 try { 4063 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 4064 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 4065 mNwService.setInterfaceConfig(iface, ifcg); 4066 return true; 4067 } catch (RemoteException e) { 4068 return false; 4069 } 4070 } 4071 4072 private boolean isProvisioned(LinkProperties lp) { 4073 return lp.isProvisioned() || 4074 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 4075 } 4076 4077 /** 4078 * Updates mLinkProperties by merging information from various sources. 4079 * 4080 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 4081 * netlink, static configuration, ...). When one of these sources of information has updated 4082 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 4083 * information that came from other sources. Instead, when one of those sources has new 4084 * information, we update the object that tracks the information from that source and then 4085 * call this method to apply the change to mLinkProperties. 4086 * 4087 * The information in mLinkProperties is currently obtained as follows: 4088 * - Interface name: set in the constructor. 4089 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 4090 * - IPv4 routes, DNS servers, and domains: DHCP. 4091 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 4092 * - HTTP proxy: the wifi config store. 4093 */ 4094 private void updateLinkProperties(int reason) { 4095 LinkProperties newLp = new LinkProperties(); 4096 4097 // Interface name and proxy are locally configured. 4098 newLp.setInterfaceName(mInterfaceName); 4099 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 4100 4101 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 4102 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 4103 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 4104 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 4105 newLp.addRoute(route); 4106 } 4107 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 4108 newLp.addDnsServer(dns); 4109 } 4110 4111 // IPv4 routes, DNS servers and domains come from mDhcpResults. 4112 synchronized (mDhcpResultsLock) { 4113 // Even when we're using static configuration, we don't need to look at the config 4114 // store, because static IP configuration also populates mDhcpResults. 4115 if ((mDhcpResults != null)) { 4116 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 4117 newLp.addRoute(route); 4118 } 4119 for (InetAddress dns : mDhcpResults.dnsServers) { 4120 newLp.addDnsServer(dns); 4121 } 4122 newLp.setDomains(mDhcpResults.domains); 4123 } 4124 } 4125 4126 final boolean linkChanged = !newLp.equals(mLinkProperties); 4127 final boolean wasProvisioned = isProvisioned(mLinkProperties); 4128 final boolean isProvisioned = isProvisioned(newLp); 4129 final boolean lostIPv4Provisioning = 4130 mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address(); 4131 final DetailedState detailedState = getNetworkDetailedState(); 4132 4133 if (linkChanged) { 4134 if (DBG) { 4135 log("Link configuration changed for netId: " + mLastNetworkId 4136 + " old: " + mLinkProperties + " new: " + newLp); 4137 } 4138 mLinkProperties = newLp; 4139 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 4140 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 4141 } 4142 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4143 } 4144 4145 if (DBG) { 4146 StringBuilder sb = new StringBuilder(); 4147 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4148 sb.append(" state: " + detailedState); 4149 sb.append(" reason: " + smToString(reason)); 4150 4151 if (mLinkProperties != null) { 4152 if (mLinkProperties.hasIPv4Address()) { 4153 sb.append(" v4"); 4154 } 4155 if (mLinkProperties.hasGlobalIPv6Address()) { 4156 sb.append(" v6"); 4157 } 4158 if (mLinkProperties.hasIPv4DefaultRoute()) { 4159 sb.append(" v4r"); 4160 } 4161 if (mLinkProperties.hasIPv6DefaultRoute()) { 4162 sb.append(" v6r"); 4163 } 4164 if (mLinkProperties.hasIPv4DnsServer()) { 4165 sb.append(" v4dns"); 4166 } 4167 if (mLinkProperties.hasIPv6DnsServer()) { 4168 sb.append(" v6dns"); 4169 } 4170 if (isProvisioned) { 4171 sb.append(" isprov"); 4172 } 4173 } 4174 loge(sb.toString()); 4175 } 4176 4177 // If we just configured or lost IP configuration, do the needful. 4178 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4179 // here because those should only be called if we're attempting to connect or already 4180 // connected, whereas updateLinkProperties can be called at any time. 4181 switch (reason) { 4182 case DhcpStateMachine.DHCP_SUCCESS: 4183 case CMD_STATIC_IP_SUCCESS: 4184 // IPv4 provisioning succeded. Advance to connected state. 4185 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4186 if (!isProvisioned) { 4187 // Can never happen unless DHCP reports success but isProvisioned thinks the 4188 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4189 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4190 // TODO: disconnect here instead. If our configuration is not usable, there's no 4191 // point in staying connected, and if mLinkProperties is out of sync with 4192 // reality, that will cause problems in the future. 4193 loge("IPv4 config succeeded, but not provisioned"); 4194 } 4195 break; 4196 4197 case DhcpStateMachine.DHCP_FAILURE: 4198 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4199 // give up and disconnect. 4200 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4201 if (!isProvisioned || lostIPv4Provisioning) { 4202 sendMessage(CMD_IP_CONFIGURATION_LOST); 4203 } else { 4204 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4205 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4206 4207 // To be sure we don't get stuck with a non-working network if all we had is 4208 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4209 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4210 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4211 // necessary for provisioning, its deletion will cause us to disconnect. 4212 // 4213 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4214 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4215 // not return true if we're using DHCP and don't have an IPv4 default route. So 4216 // for now it's only here for extra redundancy. However, it will increase 4217 // robustness if we move to getting IPv4 routes from netlink as well. 4218 loge("DHCP failure: provisioned, clearing IPv4 address."); 4219 if (!clearIPv4Address(mInterfaceName)) { 4220 sendMessage(CMD_IP_CONFIGURATION_LOST); 4221 } 4222 } 4223 break; 4224 4225 case CMD_STATIC_IP_FAILURE: 4226 // Static configuration was invalid, or an error occurred in applying it. Give up. 4227 sendMessage(CMD_IP_CONFIGURATION_LOST); 4228 break; 4229 4230 case CMD_UPDATE_LINKPROPERTIES: 4231 // IP addresses, DNS servers, etc. changed. Act accordingly. 4232 if (wasProvisioned && !isProvisioned) { 4233 // We no longer have a usable network configuration. Disconnect. 4234 sendMessage(CMD_IP_CONFIGURATION_LOST); 4235 } else if (!wasProvisioned && isProvisioned) { 4236 // We have a usable IPv6-only config. Advance to connected state. 4237 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4238 } 4239 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4240 // If anything has changed and we're already connected, send out a notification. 4241 sendLinkConfigurationChangedBroadcast(); 4242 } 4243 break; 4244 } 4245 } 4246 4247 /** 4248 * Clears all our link properties. 4249 */ 4250 private void clearLinkProperties() { 4251 // Clear the link properties obtained from DHCP and netlink. 4252 synchronized (mDhcpResultsLock) { 4253 if (mDhcpResults != null) { 4254 mDhcpResults.clear(); 4255 } 4256 } 4257 mNetlinkTracker.clearLinkProperties(); 4258 4259 // Now clear the merged link properties. 4260 mLinkProperties.clear(); 4261 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4262 } 4263 4264 /** 4265 * try to update default route MAC address. 4266 */ 4267 private String updateDefaultRouteMacAddress(int timeout) { 4268 String address = null; 4269 for (RouteInfo route : mLinkProperties.getRoutes()) { 4270 if (route.isDefaultRoute() && route.hasGateway()) { 4271 InetAddress gateway = route.getGateway(); 4272 if (gateway instanceof Inet4Address) { 4273 if (PDBG) { 4274 loge("updateDefaultRouteMacAddress found Ipv4 default :" 4275 + gateway.getHostAddress()); 4276 } 4277 address = macAddressFromRoute(gateway.getHostAddress()); 4278 /* The gateway's MAC address is known */ 4279 if ((address == null) && (timeout > 0)) { 4280 boolean reachable = false; 4281 try { 4282 reachable = gateway.isReachable(timeout); 4283 } catch (Exception e) { 4284 loge("updateDefaultRouteMacAddress exception reaching :" 4285 + gateway.getHostAddress()); 4286 4287 } finally { 4288 if (reachable == true) { 4289 4290 address = macAddressFromRoute(gateway.getHostAddress()); 4291 if (PDBG) { 4292 loge("updateDefaultRouteMacAddress reachable (tried again) :" 4293 + gateway.getHostAddress() + " found " + address); 4294 } 4295 } 4296 } 4297 } 4298 if (address != null) { 4299 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4300 } 4301 } 4302 } 4303 } 4304 return address; 4305 } 4306 4307 private void sendScanResultsAvailableBroadcast() { 4308 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4309 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4310 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4311 } 4312 4313 private void sendRssiChangeBroadcast(final int newRssi) { 4314 try { 4315 mBatteryStats.noteWifiRssiChanged(newRssi); 4316 } catch (RemoteException e) { 4317 // Won't happen. 4318 } 4319 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4320 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4321 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4322 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4323 } 4324 4325 private void sendNetworkStateChangeBroadcast(String bssid) { 4326 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4327 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4328 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4329 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties (mLinkProperties)); 4330 if (bssid != null) 4331 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4332 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4333 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4334 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, new WifiInfo(mWifiInfo)); 4335 } 4336 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4337 } 4338 4339 private void sendLinkConfigurationChangedBroadcast() { 4340 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4341 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4342 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4343 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4344 } 4345 4346 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4347 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4348 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4349 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4350 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4351 } 4352 4353 /** 4354 * Record the detailed state of a network. 4355 * @param state the new {@code DetailedState} 4356 */ 4357 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4358 boolean hidden = false; 4359 4360 if (linkDebouncing || isRoaming()) { 4361 // There is generally a confusion in the system about colluding 4362 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4363 // which leads to multiple confusion. 4364 // 4365 // If link is de-bouncing or roaming, we already have an IP address 4366 // as well we were connected and are doing L2 cycles of 4367 // reconnecting or renewing IP address to check that we still have it 4368 // This L2 link flapping should ne be reflected into the Network state 4369 // which is the state of the WiFi Network visible to Layer 3 and applications 4370 // Note that once debouncing and roaming are completed, we will 4371 // set the Network state to where it should be, or leave it as unchanged 4372 // 4373 hidden = true; 4374 } 4375 if (DBG) { 4376 log("setDetailed state, old =" 4377 + mNetworkInfo.getDetailedState() + " and new state=" + state 4378 + " hidden=" + hidden); 4379 } 4380 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4381 // Always indicate that SSID has changed 4382 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4383 if (DBG) { 4384 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4385 } 4386 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4387 sendNetworkStateChangeBroadcast(null); 4388 } 4389 } 4390 if (hidden == true) { 4391 return false; 4392 } 4393 4394 if (state != mNetworkInfo.getDetailedState()) { 4395 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4396 if (mNetworkAgent != null) { 4397 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4398 } 4399 sendNetworkStateChangeBroadcast(null); 4400 return true; 4401 } 4402 return false; 4403 } 4404 4405 private DetailedState getNetworkDetailedState() { 4406 return mNetworkInfo.getDetailedState(); 4407 } 4408 4409 private SupplicantState handleSupplicantStateChange(Message message) { 4410 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4411 SupplicantState state = stateChangeResult.state; 4412 // Supplicant state change 4413 // [31-13] Reserved for future use 4414 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4415 // 50023 supplicant_state_changed (custom|1|5) 4416 mWifiInfo.setSupplicantState(state); 4417 // Network id is only valid when we start connecting 4418 if (SupplicantState.isConnecting(state)) { 4419 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4420 } else { 4421 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4422 } 4423 4424 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4425 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4426 4427 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4428 4429 return state; 4430 } 4431 4432 /** 4433 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4434 * using the interface, stopping DHCP & disabling interface 4435 */ 4436 private void handleNetworkDisconnect() { 4437 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4438 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4439 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 4440 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 4441 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 4442 4443 4444 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4445 4446 stopDhcp(); 4447 4448 try { 4449 mNwService.clearInterfaceAddresses(mInterfaceName); 4450 mNwService.disableIpv6(mInterfaceName); 4451 } catch (Exception e) { 4452 loge("Failed to clear addresses or disable ipv6" + e); 4453 } 4454 4455 /* Reset data structures */ 4456 mBadLinkspeedcount = 0; 4457 mWifiInfo.reset(); 4458 linkDebouncing = false; 4459 /* Reset roaming parameters */ 4460 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4461 4462 /** 4463 * fullBandConnectedTimeIntervalMilli: 4464 * - start scans at mWifiConfigStore.associatedPartialScanPeriodMilli seconds interval 4465 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4466 * Initialize to sane value = 20 seconds 4467 */ 4468 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4469 4470 setNetworkDetailedState(DetailedState.DISCONNECTED); 4471 if (mNetworkAgent != null) { 4472 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4473 mNetworkAgent = null; 4474 } 4475 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4476 4477 /* Clear network properties */ 4478 clearLinkProperties(); 4479 4480 /* Cend event to CM & network change broadcast */ 4481 sendNetworkStateChangeBroadcast(mLastBssid); 4482 4483 /* Cancel auto roam requests */ 4484 autoRoamSetBSSID(mLastNetworkId, "any"); 4485 4486 mLastBssid= null; 4487 registerDisconnected(); 4488 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4489 } 4490 4491 private void handleSupplicantConnectionLoss() { 4492 /* Socket connection can be lost when we do a graceful shutdown 4493 * or when the driver is hung. Ensure supplicant is stopped here. 4494 */ 4495 mWifiMonitor.killSupplicant(mP2pSupported); 4496 mWifiNative.closeSupplicantConnection(); 4497 sendSupplicantConnectionChangedBroadcast(false); 4498 setWifiState(WIFI_STATE_DISABLED); 4499 } 4500 4501 void handlePreDhcpSetup() { 4502 mDhcpActive = true; 4503 if (!mBluetoothConnectionActive) { 4504 /* 4505 * There are problems setting the Wi-Fi driver's power 4506 * mode to active when bluetooth coexistence mode is 4507 * enabled or sense. 4508 * <p> 4509 * We set Wi-Fi to active mode when 4510 * obtaining an IP address because we've found 4511 * compatibility issues with some routers with low power 4512 * mode. 4513 * <p> 4514 * In order for this active power mode to properly be set, 4515 * we disable coexistence mode until we're done with 4516 * obtaining an IP address. One exception is if we 4517 * are currently connected to a headset, since disabling 4518 * coexistence would interrupt that connection. 4519 */ 4520 // Disable the coexistence mode 4521 mWifiNative.setBluetoothCoexistenceMode( 4522 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4523 } 4524 4525 // Disable power save and suspend optimizations during DHCP 4526 // Note: The order here is important for now. Brcm driver changes 4527 // power settings when we control suspend mode optimizations. 4528 // TODO: Remove this comment when the driver is fixed. 4529 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4530 mWifiNative.setPowerSave(false); 4531 4532 // stopBatchedScan(); 4533 WifiNative.pauseScan(); 4534 4535 // Update link layer stats 4536 getWifiLinkLayerStats(false); 4537 4538 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4539 Message msg = new Message(); 4540 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4541 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4542 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4543 msg.obj = mDhcpStateMachine; 4544 mWifiP2pChannel.sendMessage(msg); 4545 } 4546 4547 4548 void startDhcp() { 4549 if (mDhcpStateMachine == null) { 4550 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4551 mContext, WifiStateMachine.this, mInterfaceName); 4552 4553 } 4554 mDhcpStateMachine.registerForPreDhcpNotification(); 4555 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4556 } 4557 4558 void renewDhcp() { 4559 if (mDhcpStateMachine == null) { 4560 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4561 mContext, WifiStateMachine.this, mInterfaceName); 4562 4563 } 4564 mDhcpStateMachine.registerForPreDhcpNotification(); 4565 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4566 } 4567 4568 void stopDhcp() { 4569 if (mDhcpStateMachine != null) { 4570 /* In case we were in middle of DHCP operation restore back powermode */ 4571 handlePostDhcpSetup(); 4572 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4573 } 4574 } 4575 4576 void handlePostDhcpSetup() { 4577 /* Restore power save and suspend optimizations */ 4578 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4579 mWifiNative.setPowerSave(true); 4580 4581 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 4582 4583 // Set the coexistence mode back to its default value 4584 mWifiNative.setBluetoothCoexistenceMode( 4585 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4586 4587 mDhcpActive = false; 4588 4589 // startBatchedScan(); 4590 WifiNative.restartScan(); 4591 } 4592 4593 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 4594 4595 if (PDBG) { 4596 loge("wifistatemachine handleIPv4Success <" + dhcpResults.toString() + ">"); 4597 loge("link address " + dhcpResults.ipAddress); 4598 } 4599 4600 synchronized (mDhcpResultsLock) { 4601 mDhcpResults = dhcpResults; 4602 } 4603 4604 Inet4Address addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 4605 if (isRoaming()) { 4606 if (addr instanceof Inet4Address) { 4607 int previousAddress = mWifiInfo.getIpAddress(); 4608 int newAddress = NetworkUtils.inetAddressToInt(addr); 4609 if (previousAddress != newAddress) { 4610 loge("handleIPv4Success, roaming and address changed" + 4611 mWifiInfo + " got: " + addr); 4612 } else { 4613 4614 } 4615 } else { 4616 loge("handleIPv4Success, roaming and didnt get an IPv4 address" + 4617 addr.toString()); 4618 } 4619 } 4620 mWifiInfo.setInetAddress(addr); 4621 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 4622 updateLinkProperties(reason); 4623 } 4624 4625 private void handleSuccessfulIpConfiguration() { 4626 mLastSignalLevel = -1; // Force update of signal strength 4627 WifiConfiguration c = getCurrentWifiConfiguration(); 4628 if (c != null) { 4629 // Reset IP failure tracking 4630 c.numConnectionFailures = 0; 4631 4632 // Tell the framework whether the newly connected network is trusted or untrusted. 4633 updateCapabilities(c); 4634 } 4635 if (c != null) { 4636 ScanResult result = getCurrentScanResult(); 4637 if (result == null) { 4638 loge("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 4639 c.configKey()); 4640 } else { 4641 // Clear the per BSSID failure count 4642 result.numIpConfigFailures = 0; 4643 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 4644 // any BSSID, even though it may already have a non zero ip failure count, 4645 // this will typically happen if the user walks away and come back to his arrea 4646 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 4647 // in supplicant for a couple of hours or a day 4648 mWifiNative.clearBlacklist(); 4649 } 4650 } 4651 } 4652 4653 private void handleIPv4Failure(int reason) { 4654 synchronized(mDhcpResultsLock) { 4655 if (mDhcpResults != null) { 4656 mDhcpResults.clear(); 4657 } 4658 } 4659 if (PDBG) { 4660 loge("wifistatemachine handleIPv4Failure"); 4661 } 4662 updateLinkProperties(reason); 4663 } 4664 4665 private void handleIpConfigurationLost() { 4666 mWifiInfo.setInetAddress(null); 4667 mWifiInfo.setMeteredHint(false); 4668 4669 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 4670 "DHCP FAILURE", mWifiInfo.getBSSID()); 4671 4672 /* DHCP times out after about 30 seconds, we do a 4673 * disconnect thru supplicant, we will let autojoin retry connecting to the network 4674 */ 4675 mWifiNative.disconnect(); 4676 } 4677 4678 private int convertFrequencyToChannelNumber(int frequency) { 4679 if (frequency >= 2412 && frequency <= 2484) { 4680 return (frequency -2412) / 5 + 1; 4681 } else if (frequency >= 5170 && frequency <=5825) { 4682 //DFS is included 4683 return (frequency -5170) / 5 + 34; 4684 } else { 4685 return 0; 4686 } 4687 } 4688 4689 private int chooseApChannel(int apBand) { 4690 int apChannel; 4691 int[] channel; 4692 4693 if (apBand == 0) { 4694 //for 2.4GHz, we only set the AP at channel 1,6,11 4695 apChannel = 5 * mRandom.nextInt(3) + 1; 4696 } else { 4697 //5G without DFS 4698 channel = mWifiNative.getChannelsForBand(2); 4699 if (channel != null && channel.length > 0) { 4700 apChannel = channel[mRandom.nextInt(channel.length)]; 4701 apChannel = convertFrequencyToChannelNumber(apChannel); 4702 } else { 4703 Log.e(TAG, "SoftAp do not get available channel list"); 4704 apChannel = 0; 4705 } 4706 } 4707 4708 if(DBG) { 4709 Log.d(TAG, "SoftAp set on channel " + apChannel); 4710 } 4711 4712 return apChannel; 4713 } 4714 4715 4716 /* Current design is to not set the config on a running hostapd but instead 4717 * stop and start tethering when user changes config on a running access point 4718 * 4719 * TODO: Add control channel setup through hostapd that allows changing config 4720 * on a running daemon 4721 */ 4722 private void startSoftApWithConfig(final WifiConfiguration configuration) { 4723 // set channel 4724 final WifiConfiguration config = new WifiConfiguration(configuration); 4725 4726 if (DBG) { 4727 Log.d(TAG, "SoftAp config channel is: " + config.apChannel); 4728 } 4729 //fix me -- set country code through HAL Here 4730 if (config.apChannel == 0) { 4731 config.apChannel = chooseApChannel(config.apBand); 4732 if (config.apChannel == 0) { 4733 //fail to get available channel 4734 sendMessage(CMD_START_AP_FAILURE); 4735 return; 4736 } 4737 } 4738 //turn off interface 4739 if (!mWifiNative.toggleInterface(0)) { 4740 sendMessage(CMD_START_AP_FAILURE); 4741 return; 4742 } 4743 // Start hostapd on a separate thread 4744 new Thread(new Runnable() { 4745 public void run() { 4746 try { 4747 mNwService.startAccessPoint(config, mInterfaceName); 4748 } catch (Exception e) { 4749 loge("Exception in softap start " + e); 4750 try { 4751 mNwService.stopAccessPoint(mInterfaceName); 4752 mNwService.startAccessPoint(config, mInterfaceName); 4753 } catch (Exception e1) { 4754 loge("Exception in softap re-start " + e1); 4755 sendMessage(CMD_START_AP_FAILURE); 4756 return; 4757 } 4758 } 4759 if (DBG) log("Soft AP start successful"); 4760 sendMessage(CMD_START_AP_SUCCESS); 4761 } 4762 }).start(); 4763 } 4764 4765 /* 4766 * Read a MAC address in /proc/arp/table, used by WifistateMachine 4767 * so as to record MAC address of default gateway. 4768 **/ 4769 private String macAddressFromRoute(String ipAddress) { 4770 String macAddress = null; 4771 BufferedReader reader = null; 4772 try { 4773 reader = new BufferedReader(new FileReader("/proc/net/arp")); 4774 4775 // Skip over the line bearing colum titles 4776 String line = reader.readLine(); 4777 4778 while ((line = reader.readLine()) != null) { 4779 String[] tokens = line.split("[ ]+"); 4780 if (tokens.length < 6) { 4781 continue; 4782 } 4783 4784 // ARP column format is 4785 // Address HWType HWAddress Flags Mask IFace 4786 String ip = tokens[0]; 4787 String mac = tokens[3]; 4788 4789 if (ipAddress.equals(ip)) { 4790 macAddress = mac; 4791 break; 4792 } 4793 } 4794 4795 if (macAddress == null) { 4796 loge("Did not find remoteAddress {" + ipAddress + "} in " + 4797 "/proc/net/arp"); 4798 } 4799 4800 } catch (FileNotFoundException e) { 4801 loge("Could not open /proc/net/arp to lookup mac address"); 4802 } catch (IOException e) { 4803 loge("Could not read /proc/net/arp to lookup mac address"); 4804 } finally { 4805 try { 4806 if (reader != null) { 4807 reader.close(); 4808 } 4809 } catch (IOException e) { 4810 // Do nothing 4811 } 4812 } 4813 return macAddress; 4814 4815 } 4816 4817 private class WifiNetworkFactory extends NetworkFactory { 4818 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 4819 super(l, c, TAG, f); 4820 } 4821 4822 @Override 4823 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 4824 ++mConnectionRequests; 4825 } 4826 4827 @Override 4828 protected void releaseNetworkFor(NetworkRequest networkRequest) { 4829 --mConnectionRequests; 4830 } 4831 4832 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 4833 pw.println("mConnectionRequests " + mConnectionRequests); 4834 } 4835 4836 } 4837 4838 private class UntrustedWifiNetworkFactory extends NetworkFactory { 4839 private int mUntrustedReqCount; 4840 4841 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 4842 super(l, c, tag, f); 4843 } 4844 4845 @Override 4846 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 4847 if (!networkRequest.networkCapabilities.hasCapability( 4848 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 4849 if (++mUntrustedReqCount == 1) { 4850 mWifiAutoJoinController.setAllowUntrustedConnections(true); 4851 } 4852 } 4853 } 4854 4855 @Override 4856 protected void releaseNetworkFor(NetworkRequest networkRequest) { 4857 if (!networkRequest.networkCapabilities.hasCapability( 4858 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 4859 if (--mUntrustedReqCount == 0) { 4860 mWifiAutoJoinController.setAllowUntrustedConnections(false); 4861 } 4862 } 4863 } 4864 4865 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 4866 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 4867 } 4868 } 4869 4870 void maybeRegisterNetworkFactory() { 4871 if (mNetworkFactory == null) { 4872 checkAndSetConnectivityInstance(); 4873 if (mCm != null) { 4874 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 4875 NETWORKTYPE, mNetworkCapabilitiesFilter); 4876 mNetworkFactory.setScoreFilter(60); 4877 mNetworkFactory.register(); 4878 4879 // We can't filter untrusted network in the capabilities filter because a trusted 4880 // network would still satisfy a request that accepts untrusted ones. 4881 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 4882 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 4883 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 4884 mUntrustedNetworkFactory.register(); 4885 } 4886 } 4887 } 4888 4889 /******************************************************** 4890 * HSM states 4891 *******************************************************/ 4892 4893 class DefaultState extends State { 4894 @Override 4895 public boolean processMessage(Message message) { 4896 logStateAndMessage(message, getClass().getSimpleName()); 4897 4898 switch (message.what) { 4899 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 4900 AsyncChannel ac = (AsyncChannel) message.obj; 4901 if (ac == mWifiP2pChannel) { 4902 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 4903 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 4904 } else { 4905 loge("WifiP2pService connection failure, error=" + message.arg1); 4906 } 4907 } else { 4908 loge("got HALF_CONNECTED for unknown channel"); 4909 } 4910 break; 4911 } 4912 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 4913 AsyncChannel ac = (AsyncChannel) message.obj; 4914 if (ac == mWifiP2pChannel) { 4915 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 4916 //TODO: Re-establish connection to state machine after a delay 4917 // mWifiP2pChannel.connect(mContext, getHandler(), 4918 // mWifiP2pManager.getMessenger()); 4919 } 4920 break; 4921 } 4922 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 4923 mBluetoothConnectionActive = (message.arg1 != 4924 BluetoothAdapter.STATE_DISCONNECTED); 4925 break; 4926 /* Synchronous call returns */ 4927 case CMD_PING_SUPPLICANT: 4928 case CMD_ENABLE_NETWORK: 4929 case CMD_ADD_OR_UPDATE_NETWORK: 4930 case CMD_REMOVE_NETWORK: 4931 case CMD_SAVE_CONFIG: 4932 replyToMessage(message, message.what, FAILURE); 4933 break; 4934 case CMD_GET_CAPABILITY_FREQ: 4935 replyToMessage(message, message.what, null); 4936 break; 4937 case CMD_GET_CONFIGURED_NETWORKS: 4938 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4939 break; 4940 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 4941 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4942 break; 4943 case CMD_ENABLE_RSSI_POLL: 4944 mEnableRssiPolling = (message.arg1 == 1); 4945 break; 4946 case CMD_SET_HIGH_PERF_MODE: 4947 if (message.arg1 == 1) { 4948 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 4949 } else { 4950 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 4951 } 4952 break; 4953 case CMD_BOOT_COMPLETED: 4954 maybeRegisterNetworkFactory(); 4955 break; 4956 case CMD_SET_BATCHED_SCAN: 4957 recordBatchedScanSettings(message.arg1, message.arg2, (Bundle)message.obj); 4958 break; 4959 case CMD_POLL_BATCHED_SCAN: 4960 handleBatchedScanPollRequest(); 4961 break; 4962 case CMD_START_NEXT_BATCHED_SCAN: 4963 startNextBatchedScan(); 4964 break; 4965 case CMD_SCREEN_STATE_CHANGED: 4966 handleScreenStateChanged(message.arg1 != 0, 4967 /* startBackgroundScanIfNeeded = */ false); 4968 break; 4969 /* Discard */ 4970 case CMD_START_SCAN: 4971 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4972 break; 4973 case CMD_START_SUPPLICANT: 4974 case CMD_STOP_SUPPLICANT: 4975 case CMD_STOP_SUPPLICANT_FAILED: 4976 case CMD_START_DRIVER: 4977 case CMD_STOP_DRIVER: 4978 case CMD_DELAYED_STOP_DRIVER: 4979 case CMD_DRIVER_START_TIMED_OUT: 4980 case CMD_START_AP: 4981 case CMD_START_AP_SUCCESS: 4982 case CMD_START_AP_FAILURE: 4983 case CMD_STOP_AP: 4984 case CMD_TETHER_STATE_CHANGE: 4985 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 4986 case CMD_DISCONNECT: 4987 case CMD_RECONNECT: 4988 case CMD_REASSOCIATE: 4989 case CMD_RELOAD_TLS_AND_RECONNECT: 4990 case WifiMonitor.SUP_CONNECTION_EVENT: 4991 case WifiMonitor.SUP_DISCONNECTION_EVENT: 4992 case WifiMonitor.NETWORK_CONNECTION_EVENT: 4993 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 4994 case WifiMonitor.SCAN_RESULTS_EVENT: 4995 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 4996 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 4997 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 4998 case WifiMonitor.WPS_OVERLAP_EVENT: 4999 case CMD_BLACKLIST_NETWORK: 5000 case CMD_CLEAR_BLACKLIST: 5001 case CMD_SET_OPERATIONAL_MODE: 5002 case CMD_SET_COUNTRY_CODE: 5003 case CMD_SET_FREQUENCY_BAND: 5004 case CMD_RSSI_POLL: 5005 case CMD_ENABLE_ALL_NETWORKS: 5006 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5007 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5008 /* Handled by WifiApConfigStore */ 5009 case CMD_SET_AP_CONFIG: 5010 case CMD_SET_AP_CONFIG_COMPLETED: 5011 case CMD_REQUEST_AP_CONFIG: 5012 case CMD_RESPONSE_AP_CONFIG: 5013 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5014 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5015 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5016 case CMD_DISABLE_P2P_RSP: 5017 case WifiMonitor.SUP_REQUEST_IDENTITY: 5018 case CMD_TEST_NETWORK_DISCONNECT: 5019 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5020 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5021 case CMD_TARGET_BSSID: 5022 case CMD_AUTO_CONNECT: 5023 case CMD_AUTO_ROAM: 5024 case CMD_AUTO_SAVE_NETWORK: 5025 case CMD_ASSOCIATED_BSSID: 5026 case CMD_UNWANTED_NETWORK: 5027 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5028 case CMD_ROAM_WATCHDOG_TIMER: 5029 case CMD_DISABLE_EPHEMERAL_NETWORK: 5030 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5031 break; 5032 case DhcpStateMachine.CMD_ON_QUIT: 5033 mDhcpStateMachine = null; 5034 break; 5035 case CMD_SET_SUSPEND_OPT_ENABLED: 5036 if (message.arg1 == 1) { 5037 mSuspendWakeLock.release(); 5038 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 5039 } else { 5040 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 5041 } 5042 break; 5043 case WifiMonitor.DRIVER_HUNG_EVENT: 5044 setSupplicantRunning(false); 5045 setSupplicantRunning(true); 5046 break; 5047 case WifiManager.CONNECT_NETWORK: 5048 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5049 WifiManager.BUSY); 5050 break; 5051 case WifiManager.FORGET_NETWORK: 5052 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5053 WifiManager.BUSY); 5054 break; 5055 case WifiManager.SAVE_NETWORK: 5056 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 5057 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5058 WifiManager.BUSY); 5059 break; 5060 case WifiManager.START_WPS: 5061 replyToMessage(message, WifiManager.WPS_FAILED, 5062 WifiManager.BUSY); 5063 break; 5064 case WifiManager.CANCEL_WPS: 5065 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 5066 WifiManager.BUSY); 5067 break; 5068 case WifiManager.DISABLE_NETWORK: 5069 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5070 WifiManager.BUSY); 5071 break; 5072 case WifiManager.RSSI_PKTCNT_FETCH: 5073 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 5074 WifiManager.BUSY); 5075 break; 5076 case CMD_GET_SUPPORTED_FEATURES: 5077 if (WifiNative.startHal()) { 5078 int featureSet = WifiNative.getSupportedFeatureSet(); 5079 replyToMessage(message, message.what, featureSet); 5080 } else { 5081 replyToMessage(message, message.what, 0); 5082 } 5083 break; 5084 case CMD_GET_LINK_LAYER_STATS: 5085 // Not supported hence reply with error message 5086 replyToMessage(message, message.what, null); 5087 break; 5088 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5089 NetworkInfo info = (NetworkInfo) message.obj; 5090 mP2pConnected.set(info.isConnected()); 5091 break; 5092 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5093 mTemporarilyDisconnectWifi = (message.arg1 == 1); 5094 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 5095 break; 5096 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 5097 case CMD_UPDATE_LINKPROPERTIES: 5098 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5099 break; 5100 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5101 case CMD_IP_CONFIGURATION_LOST: 5102 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 5103 break; 5104 case CMD_GET_CONNECTION_STATISTICS: 5105 replyToMessage(message, message.what, mWifiConnectionStatistics); 5106 break; 5107 case CMD_REMOVE_APP_CONFIGURATIONS: 5108 deferMessage(message); 5109 break; 5110 case CMD_REMOVE_USER_CONFIGURATIONS: 5111 deferMessage(message); 5112 break; 5113 default: 5114 loge("Error! unhandled message" + message); 5115 break; 5116 } 5117 return HANDLED; 5118 } 5119 } 5120 5121 class InitialState extends State { 5122 @Override 5123 public void enter() { 5124 mWifiNative.unloadDriver(); 5125 5126 if (mWifiP2pChannel == null) { 5127 mWifiP2pChannel = new AsyncChannel(); 5128 mWifiP2pChannel.connect(mContext, getHandler(), 5129 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 5130 } 5131 5132 if (mWifiApConfigChannel == null) { 5133 mWifiApConfigChannel = new AsyncChannel(); 5134 WifiApConfigStore wifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 5135 mContext, getHandler()); 5136 wifiApConfigStore.loadApConfiguration(); 5137 mWifiApConfigChannel.connectSync(mContext, getHandler(), 5138 wifiApConfigStore.getMessenger()); 5139 } 5140 } 5141 @Override 5142 public boolean processMessage(Message message) { 5143 logStateAndMessage(message, getClass().getSimpleName()); 5144 switch (message.what) { 5145 case CMD_START_SUPPLICANT: 5146 if (mWifiNative.loadDriver()) { 5147 try { 5148 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 5149 } catch (Exception e) { 5150 loge("Failed to reload STA firmware " + e); 5151 // Continue 5152 } 5153 5154 try { 5155 // A runtime crash can leave the interface up and 5156 // IP addresses configured, and this affects 5157 // connectivity when supplicant starts up. 5158 // Ensure interface is down and we have no IP 5159 // addresses before a supplicant start. 5160 mNwService.setInterfaceDown(mInterfaceName); 5161 mNwService.clearInterfaceAddresses(mInterfaceName); 5162 5163 // Set privacy extensions 5164 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 5165 5166 // IPv6 is enabled only as long as access point is connected since: 5167 // - IPv6 addresses and routes stick around after disconnection 5168 // - kernel is unaware when connected and fails to start IPv6 negotiation 5169 // - kernel can start autoconfiguration when 802.1x is not complete 5170 mNwService.disableIpv6(mInterfaceName); 5171 } catch (RemoteException re) { 5172 loge("Unable to change interface settings: " + re); 5173 } catch (IllegalStateException ie) { 5174 loge("Unable to change interface settings: " + ie); 5175 } 5176 5177 /* Stop a running supplicant after a runtime restart 5178 * Avoids issues with drivers that do not handle interface down 5179 * on a running supplicant properly. 5180 */ 5181 mWifiMonitor.killSupplicant(mP2pSupported); 5182 if(mWifiNative.startSupplicant(mP2pSupported)) { 5183 setWifiState(WIFI_STATE_ENABLING); 5184 if (DBG) log("Supplicant start successful"); 5185 mWifiMonitor.startMonitoring(); 5186 transitionTo(mSupplicantStartingState); 5187 } else { 5188 loge("Failed to start supplicant!"); 5189 } 5190 } else { 5191 loge("Failed to load driver"); 5192 } 5193 break; 5194 case CMD_START_AP: 5195 if (mWifiNative.loadDriver()) { 5196 setWifiApState(WIFI_AP_STATE_ENABLING); 5197 transitionTo(mSoftApStartingState); 5198 } else { 5199 loge("Failed to load driver for softap"); 5200 } 5201 break; 5202 default: 5203 return NOT_HANDLED; 5204 } 5205 return HANDLED; 5206 } 5207 } 5208 5209 class SupplicantStartingState extends State { 5210 private void initializeWpsDetails() { 5211 String detail; 5212 detail = SystemProperties.get("ro.product.name", ""); 5213 if (!mWifiNative.setDeviceName(detail)) { 5214 loge("Failed to set device name " + detail); 5215 } 5216 detail = SystemProperties.get("ro.product.manufacturer", ""); 5217 if (!mWifiNative.setManufacturer(detail)) { 5218 loge("Failed to set manufacturer " + detail); 5219 } 5220 detail = SystemProperties.get("ro.product.model", ""); 5221 if (!mWifiNative.setModelName(detail)) { 5222 loge("Failed to set model name " + detail); 5223 } 5224 detail = SystemProperties.get("ro.product.model", ""); 5225 if (!mWifiNative.setModelNumber(detail)) { 5226 loge("Failed to set model number " + detail); 5227 } 5228 detail = SystemProperties.get("ro.serialno", ""); 5229 if (!mWifiNative.setSerialNumber(detail)) { 5230 loge("Failed to set serial number " + detail); 5231 } 5232 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5233 loge("Failed to set WPS config methods"); 5234 } 5235 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5236 loge("Failed to set primary device type " + mPrimaryDeviceType); 5237 } 5238 } 5239 5240 @Override 5241 public boolean processMessage(Message message) { 5242 logStateAndMessage(message, getClass().getSimpleName()); 5243 5244 switch(message.what) { 5245 case WifiMonitor.SUP_CONNECTION_EVENT: 5246 if (DBG) log("Supplicant connection established"); 5247 setWifiState(WIFI_STATE_ENABLED); 5248 mSupplicantRestartCount = 0; 5249 /* Reset the supplicant state to indicate the supplicant 5250 * state is not known at this time */ 5251 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5252 /* Initialize data structures */ 5253 mLastBssid = null; 5254 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5255 mLastSignalLevel = -1; 5256 5257 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5258 mWifiNative.enableSaveConfig(); 5259 mWifiConfigStore.loadAndEnableAllNetworks(); 5260 if (mWifiConfigStore.enableVerboseLogging.get() > 0) { 5261 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging.get()); 5262 } 5263 if (mWifiConfigStore.associatedPartialScanPeriodMilli.get() < 0) { 5264 mWifiConfigStore.associatedPartialScanPeriodMilli.set(0); 5265 } 5266 initializeWpsDetails(); 5267 5268 sendSupplicantConnectionChangedBroadcast(true); 5269 transitionTo(mDriverStartedState); 5270 break; 5271 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5272 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5273 loge("Failed to setup control channel, restart supplicant"); 5274 mWifiMonitor.killSupplicant(mP2pSupported); 5275 transitionTo(mInitialState); 5276 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5277 } else { 5278 loge("Failed " + mSupplicantRestartCount + 5279 " times to start supplicant, unload driver"); 5280 mSupplicantRestartCount = 0; 5281 setWifiState(WIFI_STATE_UNKNOWN); 5282 transitionTo(mInitialState); 5283 } 5284 break; 5285 case CMD_START_SUPPLICANT: 5286 case CMD_STOP_SUPPLICANT: 5287 case CMD_START_AP: 5288 case CMD_STOP_AP: 5289 case CMD_START_DRIVER: 5290 case CMD_STOP_DRIVER: 5291 case CMD_SET_OPERATIONAL_MODE: 5292 case CMD_SET_COUNTRY_CODE: 5293 case CMD_SET_FREQUENCY_BAND: 5294 case CMD_START_PACKET_FILTERING: 5295 case CMD_STOP_PACKET_FILTERING: 5296 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5297 deferMessage(message); 5298 break; 5299 default: 5300 return NOT_HANDLED; 5301 } 5302 return HANDLED; 5303 } 5304 } 5305 5306 class SupplicantStartedState extends State { 5307 @Override 5308 public void enter() { 5309 /* Wifi is available as long as we have a connection to supplicant */ 5310 mNetworkInfo.setIsAvailable(true); 5311 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5312 5313 int defaultInterval = mContext.getResources().getInteger( 5314 R.integer.config_wifi_supplicant_scan_interval); 5315 5316 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5317 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5318 defaultInterval); 5319 5320 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5321 mWifiNative.setExternalSim(true); 5322 5323 /* turn on use of DFS channels */ 5324 WifiNative.setDfsFlag(true); 5325 5326 /* set country code */ 5327 setCountryCode(); 5328 5329 setRandomMacOui(); 5330 mWifiNative.enableAutoConnect(false); 5331 } 5332 5333 @Override 5334 public boolean processMessage(Message message) { 5335 logStateAndMessage(message, getClass().getSimpleName()); 5336 5337 switch(message.what) { 5338 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5339 if (mP2pSupported) { 5340 transitionTo(mWaitForP2pDisableState); 5341 } else { 5342 transitionTo(mSupplicantStoppingState); 5343 } 5344 break; 5345 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5346 loge("Connection lost, restart supplicant"); 5347 handleSupplicantConnectionLoss(); 5348 handleNetworkDisconnect(); 5349 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5350 if (mP2pSupported) { 5351 transitionTo(mWaitForP2pDisableState); 5352 } else { 5353 transitionTo(mInitialState); 5354 } 5355 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5356 break; 5357 case WifiMonitor.SCAN_RESULTS_EVENT: 5358 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5359 closeRadioScanStats(); 5360 noteScanEnd(); 5361 setScanResults(); 5362 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5363 /* Just updated results from full scan, let apps know about this */ 5364 sendScanResultsAvailableBroadcast(); 5365 } 5366 mSendScanResultsBroadcast = false; 5367 mIsScanOngoing = false; 5368 mIsFullScanOngoing = false; 5369 if (mBufferedScanMsg.size() > 0) 5370 sendMessage(mBufferedScanMsg.remove()); 5371 break; 5372 case CMD_PING_SUPPLICANT: 5373 boolean ok = mWifiNative.ping(); 5374 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5375 break; 5376 case CMD_GET_CAPABILITY_FREQ: 5377 String freqs = mWifiNative.getFreqCapability(); 5378 replyToMessage(message, message.what, freqs); 5379 break; 5380 case CMD_START_AP: 5381 /* Cannot start soft AP while in client mode */ 5382 loge("Failed to start soft AP with a running supplicant"); 5383 setWifiApState(WIFI_AP_STATE_FAILED); 5384 break; 5385 case CMD_SET_OPERATIONAL_MODE: 5386 mOperationalMode = message.arg1; 5387 mWifiConfigStore. 5388 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5389 break; 5390 case CMD_TARGET_BSSID: 5391 // Trying to associate to this BSSID 5392 if (message.obj != null) { 5393 mTargetRoamBSSID = (String) message.obj; 5394 } 5395 break; 5396 case CMD_GET_LINK_LAYER_STATS: 5397 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5398 if (stats == null) { 5399 // When firmware doesnt support link layer stats, return an empty object 5400 stats = new WifiLinkLayerStats(); 5401 } 5402 replyToMessage(message, message.what, stats); 5403 break; 5404 case CMD_SET_COUNTRY_CODE: 5405 String country = (String) message.obj; 5406 5407 final boolean persist = (message.arg2 == 1); 5408 final int sequence = message.arg1; 5409 5410 if (sequence != mCountryCodeSequence.get()) { 5411 if (DBG) log("set country code ignored due to sequnce num"); 5412 break; 5413 } 5414 if (DBG) log("set country code " + country); 5415 country = country.toUpperCase(Locale.ROOT); 5416 5417 if (mDriverSetCountryCode == null || !mDriverSetCountryCode.equals(country)) { 5418 if (mWifiNative.setCountryCode(country)) { 5419 mDriverSetCountryCode = country; 5420 } else { 5421 loge("Failed to set country code " + country); 5422 } 5423 } 5424 5425 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5426 break; 5427 default: 5428 return NOT_HANDLED; 5429 } 5430 return HANDLED; 5431 } 5432 5433 @Override 5434 public void exit() { 5435 mNetworkInfo.setIsAvailable(false); 5436 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5437 } 5438 } 5439 5440 class SupplicantStoppingState extends State { 5441 @Override 5442 public void enter() { 5443 /* Send any reset commands to supplicant before shutting it down */ 5444 handleNetworkDisconnect(); 5445 if (mDhcpStateMachine != null) { 5446 mDhcpStateMachine.doQuit(); 5447 } 5448 5449 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5450 if (suppState == null) suppState = "unknown"; 5451 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5452 if (p2pSuppState == null) p2pSuppState = "unknown"; 5453 5454 loge("SupplicantStoppingState: stopSupplicant " 5455 + " init.svc.wpa_supplicant=" + suppState 5456 + " init.svc.p2p_supplicant=" + p2pSuppState); 5457 mWifiMonitor.stopSupplicant(); 5458 5459 /* Send ourselves a delayed message to indicate failure after a wait time */ 5460 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5461 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5462 setWifiState(WIFI_STATE_DISABLING); 5463 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5464 } 5465 @Override 5466 public boolean processMessage(Message message) { 5467 logStateAndMessage(message, getClass().getSimpleName()); 5468 5469 switch(message.what) { 5470 case WifiMonitor.SUP_CONNECTION_EVENT: 5471 loge("Supplicant connection received while stopping"); 5472 break; 5473 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5474 if (DBG) log("Supplicant connection lost"); 5475 handleSupplicantConnectionLoss(); 5476 transitionTo(mInitialState); 5477 break; 5478 case CMD_STOP_SUPPLICANT_FAILED: 5479 if (message.arg1 == mSupplicantStopFailureToken) { 5480 loge("Timed out on a supplicant stop, kill and proceed"); 5481 handleSupplicantConnectionLoss(); 5482 transitionTo(mInitialState); 5483 } 5484 break; 5485 case CMD_START_SUPPLICANT: 5486 case CMD_STOP_SUPPLICANT: 5487 case CMD_START_AP: 5488 case CMD_STOP_AP: 5489 case CMD_START_DRIVER: 5490 case CMD_STOP_DRIVER: 5491 case CMD_SET_OPERATIONAL_MODE: 5492 case CMD_SET_COUNTRY_CODE: 5493 case CMD_SET_FREQUENCY_BAND: 5494 case CMD_START_PACKET_FILTERING: 5495 case CMD_STOP_PACKET_FILTERING: 5496 deferMessage(message); 5497 break; 5498 default: 5499 return NOT_HANDLED; 5500 } 5501 return HANDLED; 5502 } 5503 } 5504 5505 class DriverStartingState extends State { 5506 private int mTries; 5507 @Override 5508 public void enter() { 5509 mTries = 1; 5510 /* Send ourselves a delayed message to start driver a second time */ 5511 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5512 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5513 } 5514 @Override 5515 public boolean processMessage(Message message) { 5516 logStateAndMessage(message, getClass().getSimpleName()); 5517 5518 switch(message.what) { 5519 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5520 SupplicantState state = handleSupplicantStateChange(message); 5521 /* If suplicant is exiting out of INTERFACE_DISABLED state into 5522 * a state that indicates driver has started, it is ready to 5523 * receive driver commands 5524 */ 5525 if (SupplicantState.isDriverActive(state)) { 5526 transitionTo(mDriverStartedState); 5527 } 5528 break; 5529 case CMD_DRIVER_START_TIMED_OUT: 5530 if (message.arg1 == mDriverStartToken) { 5531 if (mTries >= 2) { 5532 loge("Failed to start driver after " + mTries); 5533 transitionTo(mDriverStoppedState); 5534 } else { 5535 loge("Driver start failed, retrying"); 5536 mWakeLock.acquire(); 5537 mWifiNative.startDriver(); 5538 mWakeLock.release(); 5539 5540 ++mTries; 5541 /* Send ourselves a delayed message to start driver again */ 5542 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5543 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5544 } 5545 } 5546 break; 5547 /* Queue driver commands & connection events */ 5548 case CMD_START_DRIVER: 5549 case CMD_STOP_DRIVER: 5550 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5551 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5552 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5553 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5554 case WifiMonitor.WPS_OVERLAP_EVENT: 5555 case CMD_SET_COUNTRY_CODE: 5556 case CMD_SET_FREQUENCY_BAND: 5557 case CMD_START_PACKET_FILTERING: 5558 case CMD_STOP_PACKET_FILTERING: 5559 case CMD_START_SCAN: 5560 case CMD_DISCONNECT: 5561 case CMD_REASSOCIATE: 5562 case CMD_RECONNECT: 5563 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5564 deferMessage(message); 5565 break; 5566 case WifiMonitor.SCAN_RESULTS_EVENT: 5567 // Loose scan results obtained in Driver Starting state, they can only confuse 5568 // the state machine 5569 break; 5570 default: 5571 return NOT_HANDLED; 5572 } 5573 return HANDLED; 5574 } 5575 } 5576 5577 class DriverStartedState extends State { 5578 @Override 5579 public void enter() { 5580 5581 if (PDBG) { 5582 loge("DriverStartedState enter"); 5583 } 5584 mIsRunning = true; 5585 mInDelayedStop = false; 5586 mDelayedStopCounter++; 5587 updateBatteryWorkSource(null); 5588 /** 5589 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 5590 * When this mode is on, some of the low-level scan parameters used by the 5591 * driver are changed to reduce interference with bluetooth 5592 */ 5593 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5594 /* set frequency band of operation */ 5595 setFrequencyBand(); 5596 /* initialize network state */ 5597 setNetworkDetailedState(DetailedState.DISCONNECTED); 5598 5599 /* Remove any filtering on Multicast v6 at start */ 5600 mWifiNative.stopFilteringMulticastV6Packets(); 5601 5602 /* Reset Multicast v4 filtering state */ 5603 if (mFilteringMulticastV4Packets.get()) { 5604 mWifiNative.startFilteringMulticastV4Packets(); 5605 } else { 5606 mWifiNative.stopFilteringMulticastV4Packets(); 5607 } 5608 5609 mDhcpActive = false; 5610 5611 startBatchedScan(); 5612 5613 if (mOperationalMode != CONNECT_MODE) { 5614 mWifiNative.disconnect(); 5615 mWifiConfigStore.disableAllNetworks(); 5616 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5617 setWifiState(WIFI_STATE_DISABLED); 5618 } 5619 transitionTo(mScanModeState); 5620 } else { 5621 5622 // Status pulls in the current supplicant state and network connection state 5623 // events over the monitor connection. This helps framework sync up with 5624 // current supplicant state 5625 // TODO: actually check th supplicant status string and make sure the supplicant 5626 // is in disconnecte4d state. 5627 mWifiNative.status(); 5628 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 5629 transitionTo(mDisconnectedState); 5630 } 5631 5632 // We may have missed screen update at boot 5633 if (mScreenBroadcastReceived.get() == false) { 5634 PowerManager powerManager = (PowerManager)mContext.getSystemService( 5635 Context.POWER_SERVICE); 5636 handleScreenStateChanged(powerManager.isScreenOn(), 5637 /* startBackgroundScanIfNeeded = */ false); 5638 } else { 5639 // Set the right suspend mode settings 5640 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 5641 && mUserWantsSuspendOpt.get()); 5642 } 5643 mWifiNative.setPowerSave(true); 5644 5645 if (mP2pSupported) { 5646 if (mOperationalMode == CONNECT_MODE) { 5647 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 5648 } else { 5649 // P2P statemachine starts in disabled state, and is not enabled until 5650 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 5651 // keep it disabled. 5652 } 5653 } 5654 5655 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5656 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5657 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 5658 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5659 5660 if (PDBG) { 5661 loge("Driverstarted State enter done"); 5662 } 5663 } 5664 5665 @Override 5666 public boolean processMessage(Message message) { 5667 logStateAndMessage(message, getClass().getSimpleName()); 5668 5669 switch(message.what) { 5670 case CMD_START_SCAN: 5671 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5672 break; 5673 case CMD_SET_BATCHED_SCAN: 5674 if (recordBatchedScanSettings(message.arg1, message.arg2, 5675 (Bundle) message.obj)) { 5676 if (mBatchedScanSettings != null) { 5677 startBatchedScan(); 5678 } else { 5679 stopBatchedScan(); 5680 } 5681 } 5682 break; 5683 case CMD_SET_FREQUENCY_BAND: 5684 int band = message.arg1; 5685 if (DBG) log("set frequency band " + band); 5686 if (mWifiNative.setBand(band)) { 5687 5688 if (PDBG) loge("did set frequency band " + band); 5689 5690 mFrequencyBand.set(band); 5691 // Flush old data - like scan results 5692 mWifiNative.bssFlush(); 5693 // Fetch the latest scan results when frequency band is set 5694 startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 5695 5696 if (PDBG) loge("done set frequency band " + band); 5697 5698 } else { 5699 loge("Failed to set frequency band " + band); 5700 } 5701 break; 5702 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5703 mBluetoothConnectionActive = (message.arg1 != 5704 BluetoothAdapter.STATE_DISCONNECTED); 5705 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5706 break; 5707 case CMD_STOP_DRIVER: 5708 int mode = message.arg1; 5709 5710 /* Already doing a delayed stop */ 5711 if (mInDelayedStop) { 5712 if (DBG) log("Already in delayed stop"); 5713 break; 5714 } 5715 /* disconnect right now, but leave the driver running for a bit */ 5716 mWifiConfigStore.disableAllNetworks(); 5717 5718 mInDelayedStop = true; 5719 mDelayedStopCounter++; 5720 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 5721 5722 /* send regular delayed shut down */ 5723 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 5724 driverStopIntent.setPackage(this.getClass().getPackage().getName()); 5725 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 5726 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 5727 DRIVER_STOP_REQUEST, driverStopIntent, 5728 PendingIntent.FLAG_UPDATE_CURRENT); 5729 5730 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 5731 + mDriverStopDelayMs, mDriverStopIntent); 5732 break; 5733 case CMD_START_DRIVER: 5734 if (mInDelayedStop) { 5735 mInDelayedStop = false; 5736 mDelayedStopCounter++; 5737 mAlarmManager.cancel(mDriverStopIntent); 5738 if (DBG) log("Delayed stop ignored due to start"); 5739 if (mOperationalMode == CONNECT_MODE) { 5740 mWifiConfigStore.enableAllNetworks(); 5741 } 5742 } 5743 break; 5744 case CMD_DELAYED_STOP_DRIVER: 5745 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 5746 if (message.arg1 != mDelayedStopCounter) break; 5747 if (getCurrentState() != mDisconnectedState) { 5748 mWifiNative.disconnect(); 5749 handleNetworkDisconnect(); 5750 } 5751 mWakeLock.acquire(); 5752 mWifiNative.stopDriver(); 5753 mWakeLock.release(); 5754 if (mP2pSupported) { 5755 transitionTo(mWaitForP2pDisableState); 5756 } else { 5757 transitionTo(mDriverStoppingState); 5758 } 5759 break; 5760 case CMD_START_PACKET_FILTERING: 5761 if (message.arg1 == MULTICAST_V6) { 5762 mWifiNative.startFilteringMulticastV6Packets(); 5763 } else if (message.arg1 == MULTICAST_V4) { 5764 mWifiNative.startFilteringMulticastV4Packets(); 5765 } else { 5766 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 5767 } 5768 break; 5769 case CMD_STOP_PACKET_FILTERING: 5770 if (message.arg1 == MULTICAST_V6) { 5771 mWifiNative.stopFilteringMulticastV6Packets(); 5772 } else if (message.arg1 == MULTICAST_V4) { 5773 mWifiNative.stopFilteringMulticastV4Packets(); 5774 } else { 5775 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 5776 } 5777 break; 5778 case CMD_SET_SUSPEND_OPT_ENABLED: 5779 if (message.arg1 == 1) { 5780 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 5781 mSuspendWakeLock.release(); 5782 } else { 5783 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 5784 } 5785 break; 5786 case CMD_SET_HIGH_PERF_MODE: 5787 if (message.arg1 == 1) { 5788 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 5789 } else { 5790 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 5791 } 5792 break; 5793 case CMD_ENABLE_TDLS: 5794 if (message.obj != null) { 5795 String remoteAddress = (String) message.obj; 5796 boolean enable = (message.arg1 == 1); 5797 mWifiNative.startTdls(remoteAddress, enable); 5798 } 5799 break; 5800 default: 5801 return NOT_HANDLED; 5802 } 5803 return HANDLED; 5804 } 5805 @Override 5806 public void exit() { 5807 mIsRunning = false; 5808 updateBatteryWorkSource(null); 5809 mScanResults = new ArrayList<>(); 5810 5811 stopBatchedScan(); 5812 5813 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5814 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5815 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 5816 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5817 noteScanEnd(); // wrap up any pending request. 5818 mBufferedScanMsg.clear(); 5819 } 5820 } 5821 5822 class WaitForP2pDisableState extends State { 5823 private State mTransitionToState; 5824 @Override 5825 public void enter() { 5826 switch (getCurrentMessage().what) { 5827 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5828 mTransitionToState = mInitialState; 5829 break; 5830 case CMD_DELAYED_STOP_DRIVER: 5831 mTransitionToState = mDriverStoppingState; 5832 break; 5833 case CMD_STOP_SUPPLICANT: 5834 mTransitionToState = mSupplicantStoppingState; 5835 break; 5836 default: 5837 mTransitionToState = mDriverStoppingState; 5838 break; 5839 } 5840 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 5841 } 5842 @Override 5843 public boolean processMessage(Message message) { 5844 logStateAndMessage(message, getClass().getSimpleName()); 5845 5846 switch(message.what) { 5847 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 5848 transitionTo(mTransitionToState); 5849 break; 5850 /* Defer wifi start/shut and driver commands */ 5851 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5852 case CMD_START_SUPPLICANT: 5853 case CMD_STOP_SUPPLICANT: 5854 case CMD_START_AP: 5855 case CMD_STOP_AP: 5856 case CMD_START_DRIVER: 5857 case CMD_STOP_DRIVER: 5858 case CMD_SET_OPERATIONAL_MODE: 5859 case CMD_SET_COUNTRY_CODE: 5860 case CMD_SET_FREQUENCY_BAND: 5861 case CMD_START_PACKET_FILTERING: 5862 case CMD_STOP_PACKET_FILTERING: 5863 case CMD_START_SCAN: 5864 case CMD_DISCONNECT: 5865 case CMD_REASSOCIATE: 5866 case CMD_RECONNECT: 5867 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5868 deferMessage(message); 5869 break; 5870 default: 5871 return NOT_HANDLED; 5872 } 5873 return HANDLED; 5874 } 5875 } 5876 5877 class DriverStoppingState extends State { 5878 @Override 5879 public boolean processMessage(Message message) { 5880 logStateAndMessage(message, getClass().getSimpleName()); 5881 5882 switch(message.what) { 5883 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5884 SupplicantState state = handleSupplicantStateChange(message); 5885 if (state == SupplicantState.INTERFACE_DISABLED) { 5886 transitionTo(mDriverStoppedState); 5887 } 5888 break; 5889 /* Queue driver commands */ 5890 case CMD_START_DRIVER: 5891 case CMD_STOP_DRIVER: 5892 case CMD_SET_COUNTRY_CODE: 5893 case CMD_SET_FREQUENCY_BAND: 5894 case CMD_START_PACKET_FILTERING: 5895 case CMD_STOP_PACKET_FILTERING: 5896 case CMD_START_SCAN: 5897 case CMD_DISCONNECT: 5898 case CMD_REASSOCIATE: 5899 case CMD_RECONNECT: 5900 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5901 deferMessage(message); 5902 break; 5903 default: 5904 return NOT_HANDLED; 5905 } 5906 return HANDLED; 5907 } 5908 } 5909 5910 class DriverStoppedState extends State { 5911 @Override 5912 public boolean processMessage(Message message) { 5913 logStateAndMessage(message, getClass().getSimpleName()); 5914 switch (message.what) { 5915 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5916 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 5917 SupplicantState state = stateChangeResult.state; 5918 // A WEXT bug means that we can be back to driver started state 5919 // unexpectedly 5920 if (SupplicantState.isDriverActive(state)) { 5921 transitionTo(mDriverStartedState); 5922 } 5923 break; 5924 case CMD_START_DRIVER: 5925 mWakeLock.acquire(); 5926 mWifiNative.startDriver(); 5927 mWakeLock.release(); 5928 transitionTo(mDriverStartingState); 5929 break; 5930 default: 5931 return NOT_HANDLED; 5932 } 5933 return HANDLED; 5934 } 5935 } 5936 5937 class ScanModeState extends State { 5938 private int mLastOperationMode; 5939 @Override 5940 public void enter() { 5941 mLastOperationMode = mOperationalMode; 5942 } 5943 @Override 5944 public boolean processMessage(Message message) { 5945 logStateAndMessage(message, getClass().getSimpleName()); 5946 5947 switch(message.what) { 5948 case CMD_SET_OPERATIONAL_MODE: 5949 if (message.arg1 == CONNECT_MODE) { 5950 5951 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5952 setWifiState(WIFI_STATE_ENABLED); 5953 // Load and re-enable networks when going back to enabled state 5954 // This is essential for networks to show up after restore 5955 mWifiConfigStore.loadAndEnableAllNetworks(); 5956 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 5957 } else { 5958 mWifiConfigStore.enableAllNetworks(); 5959 } 5960 5961 // Try autojoining with recent network already present in the cache 5962 // If none are found then trigger a scan which will trigger autojoin 5963 // upon reception of scan results event 5964 if (!mWifiAutoJoinController.attemptAutoJoin()) { 5965 startScan(ENABLE_WIFI, 0, null, null); 5966 } 5967 5968 // Loose last selection choice since user toggled WiFi 5969 mWifiConfigStore. 5970 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5971 5972 mOperationalMode = CONNECT_MODE; 5973 transitionTo(mDisconnectedState); 5974 } else { 5975 // Nothing to do 5976 return HANDLED; 5977 } 5978 break; 5979 // Handle scan. All the connection related commands are 5980 // handled only in ConnectModeState 5981 case CMD_START_SCAN: 5982 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5983 break; 5984 default: 5985 return NOT_HANDLED; 5986 } 5987 return HANDLED; 5988 } 5989 } 5990 5991 5992 String smToString(Message message) { 5993 return smToString(message.what); 5994 } 5995 5996 String smToString(int what) { 5997 String s = "unknown"; 5998 switch (what) { 5999 case WifiMonitor.DRIVER_HUNG_EVENT: 6000 s = "DRIVER_HUNG_EVENT"; 6001 break; 6002 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 6003 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 6004 break; 6005 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 6006 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 6007 break; 6008 case CMD_SET_FREQUENCY_BAND: 6009 s = "CMD_SET_FREQUENCY_BAND"; 6010 break; 6011 case CMD_DELAYED_NETWORK_DISCONNECT: 6012 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 6013 break; 6014 case CMD_TEST_NETWORK_DISCONNECT: 6015 s = "CMD_TEST_NETWORK_DISCONNECT"; 6016 break; 6017 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6018 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 6019 break; 6020 case CMD_DISABLE_EPHEMERAL_NETWORK: 6021 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 6022 break; 6023 case CMD_START_DRIVER: 6024 s = "CMD_START_DRIVER"; 6025 break; 6026 case CMD_STOP_DRIVER: 6027 s = "CMD_STOP_DRIVER"; 6028 break; 6029 case CMD_STOP_SUPPLICANT: 6030 s = "CMD_STOP_SUPPLICANT"; 6031 break; 6032 case CMD_STOP_SUPPLICANT_FAILED: 6033 s = "CMD_STOP_SUPPLICANT_FAILED"; 6034 break; 6035 case CMD_START_SUPPLICANT: 6036 s = "CMD_START_SUPPLICANT"; 6037 break; 6038 case CMD_REQUEST_AP_CONFIG: 6039 s = "CMD_REQUEST_AP_CONFIG"; 6040 break; 6041 case CMD_RESPONSE_AP_CONFIG: 6042 s = "CMD_RESPONSE_AP_CONFIG"; 6043 break; 6044 case CMD_TETHER_STATE_CHANGE: 6045 s = "CMD_TETHER_STATE_CHANGE"; 6046 break; 6047 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 6048 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 6049 break; 6050 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 6051 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 6052 break; 6053 case CMD_ADD_OR_UPDATE_NETWORK: 6054 s = "CMD_ADD_OR_UPDATE_NETWORK"; 6055 break; 6056 case CMD_REMOVE_NETWORK: 6057 s = "CMD_REMOVE_NETWORK"; 6058 break; 6059 case CMD_ENABLE_NETWORK: 6060 s = "CMD_ENABLE_NETWORK"; 6061 break; 6062 case CMD_ENABLE_ALL_NETWORKS: 6063 s = "CMD_ENABLE_ALL_NETWORKS"; 6064 break; 6065 case CMD_AUTO_CONNECT: 6066 s = "CMD_AUTO_CONNECT"; 6067 break; 6068 case CMD_AUTO_ROAM: 6069 s = "CMD_AUTO_ROAM"; 6070 break; 6071 case CMD_AUTO_SAVE_NETWORK: 6072 s = "CMD_AUTO_SAVE_NETWORK"; 6073 break; 6074 case CMD_BOOT_COMPLETED: 6075 s = "CMD_BOOT_COMPLETED"; 6076 break; 6077 case DhcpStateMachine.CMD_START_DHCP: 6078 s = "CMD_START_DHCP"; 6079 break; 6080 case DhcpStateMachine.CMD_STOP_DHCP: 6081 s = "CMD_STOP_DHCP"; 6082 break; 6083 case DhcpStateMachine.CMD_RENEW_DHCP: 6084 s = "CMD_RENEW_DHCP"; 6085 break; 6086 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6087 s = "CMD_PRE_DHCP_ACTION"; 6088 break; 6089 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6090 s = "CMD_POST_DHCP_ACTION"; 6091 break; 6092 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 6093 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 6094 break; 6095 case DhcpStateMachine.CMD_ON_QUIT: 6096 s = "CMD_ON_QUIT"; 6097 break; 6098 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6099 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 6100 break; 6101 case WifiManager.DISABLE_NETWORK: 6102 s = "WifiManager.DISABLE_NETWORK"; 6103 break; 6104 case CMD_BLACKLIST_NETWORK: 6105 s = "CMD_BLACKLIST_NETWORK"; 6106 break; 6107 case CMD_CLEAR_BLACKLIST: 6108 s = "CMD_CLEAR_BLACKLIST"; 6109 break; 6110 case CMD_SAVE_CONFIG: 6111 s = "CMD_SAVE_CONFIG"; 6112 break; 6113 case CMD_GET_CONFIGURED_NETWORKS: 6114 s = "CMD_GET_CONFIGURED_NETWORKS"; 6115 break; 6116 case CMD_GET_SUPPORTED_FEATURES: 6117 s = "CMD_GET_ADAPTORS"; 6118 break; 6119 case CMD_UNWANTED_NETWORK: 6120 s = "CMD_UNWANTED_NETWORK"; 6121 break; 6122 case CMD_NETWORK_STATUS: 6123 s = "CMD_NETWORK_STATUS"; 6124 break; 6125 case CMD_GET_LINK_LAYER_STATS: 6126 s = "CMD_GET_LINK_LAYER_STATS"; 6127 break; 6128 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6129 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 6130 break; 6131 case CMD_DISCONNECT: 6132 s = "CMD_DISCONNECT"; 6133 break; 6134 case CMD_RECONNECT: 6135 s = "CMD_RECONNECT"; 6136 break; 6137 case CMD_REASSOCIATE: 6138 s = "CMD_REASSOCIATE"; 6139 break; 6140 case CMD_GET_CONNECTION_STATISTICS: 6141 s = "CMD_GET_CONNECTION_STATISTICS"; 6142 break; 6143 case CMD_SET_HIGH_PERF_MODE: 6144 s = "CMD_SET_HIGH_PERF_MODE"; 6145 break; 6146 case CMD_SET_COUNTRY_CODE: 6147 s = "CMD_SET_COUNTRY_CODE"; 6148 break; 6149 case CMD_ENABLE_RSSI_POLL: 6150 s = "CMD_ENABLE_RSSI_POLL"; 6151 break; 6152 case CMD_RSSI_POLL: 6153 s = "CMD_RSSI_POLL"; 6154 break; 6155 case CMD_START_PACKET_FILTERING: 6156 s = "CMD_START_PACKET_FILTERING"; 6157 break; 6158 case CMD_STOP_PACKET_FILTERING: 6159 s = "CMD_STOP_PACKET_FILTERING"; 6160 break; 6161 case CMD_SET_SUSPEND_OPT_ENABLED: 6162 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 6163 break; 6164 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6165 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 6166 break; 6167 case CMD_SET_BATCHED_SCAN: 6168 s = "CMD_SET_BATCHED_SCAN"; 6169 break; 6170 case CMD_START_NEXT_BATCHED_SCAN: 6171 s = "CMD_START_NEXT_BATCHED_SCAN"; 6172 break; 6173 case CMD_POLL_BATCHED_SCAN: 6174 s = "CMD_POLL_BATCHED_SCAN"; 6175 break; 6176 case CMD_UPDATE_LINKPROPERTIES: 6177 s = "CMD_UPDATE_LINKPROPERTIES"; 6178 break; 6179 case CMD_RELOAD_TLS_AND_RECONNECT: 6180 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 6181 break; 6182 case WifiManager.CONNECT_NETWORK: 6183 s = "CONNECT_NETWORK"; 6184 break; 6185 case WifiManager.SAVE_NETWORK: 6186 s = "SAVE_NETWORK"; 6187 break; 6188 case WifiManager.FORGET_NETWORK: 6189 s = "FORGET_NETWORK"; 6190 break; 6191 case WifiMonitor.SUP_CONNECTION_EVENT: 6192 s = "SUP_CONNECTION_EVENT"; 6193 break; 6194 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6195 s = "SUP_DISCONNECTION_EVENT"; 6196 break; 6197 case WifiMonitor.SCAN_RESULTS_EVENT: 6198 s = "SCAN_RESULTS_EVENT"; 6199 break; 6200 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6201 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6202 break; 6203 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6204 s = "AUTHENTICATION_FAILURE_EVENT"; 6205 break; 6206 case WifiMonitor.SSID_TEMP_DISABLED: 6207 s = "SSID_TEMP_DISABLED"; 6208 break; 6209 case WifiMonitor.SSID_REENABLED: 6210 s = "SSID_REENABLED"; 6211 break; 6212 case WifiMonitor.WPS_SUCCESS_EVENT: 6213 s = "WPS_SUCCESS_EVENT"; 6214 break; 6215 case WifiMonitor.WPS_FAIL_EVENT: 6216 s = "WPS_FAIL_EVENT"; 6217 break; 6218 case WifiMonitor.SUP_REQUEST_IDENTITY: 6219 s = "SUP_REQUEST_IDENTITY"; 6220 break; 6221 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6222 s = "NETWORK_CONNECTION_EVENT"; 6223 break; 6224 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6225 s = "NETWORK_DISCONNECTION_EVENT"; 6226 break; 6227 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6228 s = "ASSOCIATION_REJECTION_EVENT"; 6229 break; 6230 case CMD_SET_OPERATIONAL_MODE: 6231 s = "CMD_SET_OPERATIONAL_MODE"; 6232 break; 6233 case CMD_START_SCAN: 6234 s = "CMD_START_SCAN"; 6235 break; 6236 case CMD_DISABLE_P2P_RSP: 6237 s = "CMD_DISABLE_P2P_RSP"; 6238 break; 6239 case CMD_DISABLE_P2P_REQ: 6240 s = "CMD_DISABLE_P2P_REQ"; 6241 break; 6242 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6243 s = "GOOD_LINK_DETECTED"; 6244 break; 6245 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6246 s = "POOR_LINK_DETECTED"; 6247 break; 6248 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6249 s = "GROUP_CREATING_TIMED_OUT"; 6250 break; 6251 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6252 s = "P2P_CONNECTION_CHANGED"; 6253 break; 6254 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6255 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6256 break; 6257 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6258 s = "P2P.SET_MIRACAST_MODE"; 6259 break; 6260 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6261 s = "P2P.BLOCK_DISCOVERY"; 6262 break; 6263 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6264 s = "P2P.SET_COUNTRY_CODE"; 6265 break; 6266 case WifiManager.CANCEL_WPS: 6267 s = "CANCEL_WPS"; 6268 break; 6269 case WifiManager.CANCEL_WPS_FAILED: 6270 s = "CANCEL_WPS_FAILED"; 6271 break; 6272 case WifiManager.CANCEL_WPS_SUCCEDED: 6273 s = "CANCEL_WPS_SUCCEDED"; 6274 break; 6275 case WifiManager.START_WPS: 6276 s = "START_WPS"; 6277 break; 6278 case WifiManager.START_WPS_SUCCEEDED: 6279 s = "START_WPS_SUCCEEDED"; 6280 break; 6281 case WifiManager.WPS_FAILED: 6282 s = "WPS_FAILED"; 6283 break; 6284 case WifiManager.WPS_COMPLETED: 6285 s = "WPS_COMPLETED"; 6286 break; 6287 case WifiManager.RSSI_PKTCNT_FETCH: 6288 s = "RSSI_PKTCNT_FETCH"; 6289 break; 6290 case CMD_IP_CONFIGURATION_LOST: 6291 s = "CMD_IP_CONFIGURATION_LOST"; 6292 break; 6293 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6294 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6295 break; 6296 case CMD_STATIC_IP_SUCCESS: 6297 s = "CMD_STATIC_IP_SUCCESSFUL"; 6298 break; 6299 case CMD_STATIC_IP_FAILURE: 6300 s = "CMD_STATIC_IP_FAILURE"; 6301 break; 6302 case DhcpStateMachine.DHCP_SUCCESS: 6303 s = "DHCP_SUCCESS"; 6304 break; 6305 case DhcpStateMachine.DHCP_FAILURE: 6306 s = "DHCP_FAILURE"; 6307 break; 6308 case CMD_TARGET_BSSID: 6309 s = "CMD_TARGET_BSSID"; 6310 break; 6311 case CMD_ASSOCIATED_BSSID: 6312 s = "CMD_ASSOCIATED_BSSID"; 6313 break; 6314 case CMD_REMOVE_APP_CONFIGURATIONS: 6315 s = "CMD_REMOVE_APP_CONFIGURATIONS"; 6316 break; 6317 case CMD_REMOVE_USER_CONFIGURATIONS: 6318 s = "CMD_REMOVE_USER_CONFIGURATIONS"; 6319 break; 6320 case CMD_ROAM_WATCHDOG_TIMER: 6321 s = "CMD_ROAM_WATCHDOG_TIMER"; 6322 break; 6323 case CMD_SCREEN_STATE_CHANGED: 6324 s = "CMD_SCREEN_STATE_CHANGED"; 6325 break; 6326 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6327 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6328 break; 6329 default: 6330 s = "what:" + Integer.toString(what); 6331 break; 6332 } 6333 return s; 6334 } 6335 6336 void registerConnected() { 6337 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6338 long now_ms = System.currentTimeMillis(); 6339 // We are switching away from this configuration, 6340 // hence record the time we were connected last 6341 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6342 if (config != null) { 6343 config.lastConnected = System.currentTimeMillis(); 6344 config.autoJoinBailedDueToLowRssi = false; 6345 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 6346 config.numConnectionFailures = 0; 6347 config.numIpConfigFailures = 0; 6348 config.numAuthFailures = 0; 6349 config.numAssociation++; 6350 } 6351 mBadLinkspeedcount = 0; 6352 } 6353 } 6354 6355 void registerDisconnected() { 6356 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6357 long now_ms = System.currentTimeMillis(); 6358 // We are switching away from this configuration, 6359 // hence record the time we were connected last 6360 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6361 if (config != null) { 6362 config.lastDisconnected = System.currentTimeMillis(); 6363 if (config.ephemeral) { 6364 // Remove ephemeral WifiConfigurations from file 6365 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6366 } 6367 } 6368 } 6369 } 6370 6371 void noteWifiDisabledWhileAssociated() { 6372 // We got disabled by user while we were associated, make note of it 6373 int rssi = mWifiInfo.getRssi(); 6374 WifiConfiguration config = getCurrentWifiConfiguration(); 6375 if (getCurrentState() == mConnectedState 6376 && rssi != WifiInfo.INVALID_RSSI 6377 && config != null) { 6378 boolean is24GHz = mWifiInfo.is24GHz(); 6379 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24.get()) 6380 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5.get()); 6381 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24.get()) 6382 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5.get()); 6383 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24.get()) 6384 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5.get()); 6385 if (isBadRSSI) { 6386 // Take note that we got disabled while RSSI was Bad 6387 config.numUserTriggeredWifiDisableLowRSSI++; 6388 } else if (isLowRSSI) { 6389 // Take note that we got disabled while RSSI was Low 6390 config.numUserTriggeredWifiDisableBadRSSI++; 6391 } else if (!isHighRSSI) { 6392 // Take note that we got disabled while RSSI was Not high 6393 config.numUserTriggeredWifiDisableNotHighRSSI++; 6394 } 6395 } 6396 } 6397 6398 WifiConfiguration getCurrentWifiConfiguration() { 6399 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6400 return null; 6401 } 6402 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6403 } 6404 6405 ScanResult getCurrentScanResult() { 6406 WifiConfiguration config = getCurrentWifiConfiguration(); 6407 if (config == null) { 6408 return null; 6409 } 6410 String BSSID = mWifiInfo.getBSSID(); 6411 if (BSSID == null) { 6412 BSSID = mTargetRoamBSSID; 6413 } 6414 if (config.scanResultCache == null) { 6415 return null; 6416 } 6417 return config.scanResultCache.get(BSSID); 6418 } 6419 6420 String getCurrentBSSID() { 6421 if (linkDebouncing) { 6422 return null; 6423 } 6424 return mLastBssid; 6425 } 6426 6427 class ConnectModeState extends State { 6428 @Override 6429 public boolean processMessage(Message message) { 6430 WifiConfiguration config; 6431 int netId; 6432 boolean ok; 6433 boolean didDisconnect; 6434 String bssid; 6435 String ssid; 6436 NetworkUpdateResult result; 6437 logStateAndMessage(message, getClass().getSimpleName()); 6438 6439 switch (message.what) { 6440 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6441 didBlackListBSSID = false; 6442 bssid = (String) message.obj; 6443 if (bssid == null || TextUtils.isEmpty(bssid)) { 6444 // If BSSID is null, use the target roam BSSID 6445 bssid = mTargetRoamBSSID; 6446 } 6447 if (bssid != null) { 6448 // If we have a BSSID, tell configStore to black list it 6449 synchronized(mScanResultCache) { 6450 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 6451 (mLastNetworkId, bssid, false); 6452 } 6453 } 6454 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6455 break; 6456 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6457 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6458 break; 6459 case WifiMonitor.SSID_TEMP_DISABLED: 6460 case WifiMonitor.SSID_REENABLED: 6461 String substr = (String) message.obj; 6462 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 6463 "temp-disabled" : "re-enabled"; 6464 loge("ConnectModeState SSID state=" + en + " nid=" 6465 + Integer.toString(message.arg1) + " [" + substr + "]"); 6466 synchronized(mScanResultCache) { 6467 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 6468 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 6469 } 6470 break; 6471 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6472 SupplicantState state = handleSupplicantStateChange(message); 6473 // A driver/firmware hang can now put the interface in a down state. 6474 // We detect the interface going down and recover from it 6475 if (!SupplicantState.isDriverActive(state)) { 6476 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6477 handleNetworkDisconnect(); 6478 } 6479 log("Detected an interface down, restart driver"); 6480 transitionTo(mDriverStoppedState); 6481 sendMessage(CMD_START_DRIVER); 6482 break; 6483 } 6484 6485 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 6486 // when authentication times out after a successful connection, 6487 // we can figure this from the supplicant state. If supplicant 6488 // state is DISCONNECTED, but the mNetworkInfo says we are not 6489 // disconnected, we need to handle a disconnection 6490 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 6491 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6492 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 6493 handleNetworkDisconnect(); 6494 transitionTo(mDisconnectedState); 6495 } 6496 break; 6497 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6498 if (message.arg1 == 1) { 6499 mWifiNative.disconnect(); 6500 mTemporarilyDisconnectWifi = true; 6501 } else { 6502 mWifiNative.reconnect(); 6503 mTemporarilyDisconnectWifi = false; 6504 } 6505 break; 6506 case CMD_ADD_OR_UPDATE_NETWORK: 6507 config = (WifiConfiguration) message.obj; 6508 6509 if (!recordUidIfAuthorized(config, message.sendingUid)) { 6510 loge("Not authorized to update network " 6511 + " config=" + config.SSID 6512 + " cnid=" + config.networkId 6513 + " uid=" + message.sendingUid); 6514 replyToMessage(message, message.what, FAILURE); 6515 break; 6516 } 6517 6518 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 6519 if (res < 0) { 6520 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6521 } else { 6522 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 6523 if (curConfig != null && config != null) { 6524 if (curConfig.priority < config.priority 6525 && config.status == WifiConfiguration.Status.ENABLED) { 6526 // Interpret this as a connect attempt 6527 // Set the last selected configuration so as to allow the system to 6528 // stick the last user choice without persisting the choice 6529 mWifiConfigStore.setLastSelectedConfiguration(res); 6530 6531 // Remember time of last connection attempt 6532 lastConnectAttempt = System.currentTimeMillis(); 6533 6534 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6535 6536 // As a courtesy to the caller, trigger a scan now 6537 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 6538 } 6539 } 6540 } 6541 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 6542 break; 6543 case CMD_REMOVE_NETWORK: 6544 netId = message.arg1; 6545 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId)) { 6546 loge("Not authorized to remove network " 6547 + " cnid=" + netId 6548 + " uid=" + message.sendingUid); 6549 replyToMessage(message, message.what, FAILURE); 6550 break; 6551 } 6552 6553 ok = mWifiConfigStore.removeNetwork(message.arg1); 6554 if (!ok) { 6555 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6556 } 6557 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6558 break; 6559 case CMD_ENABLE_NETWORK: 6560 boolean others = message.arg2 == 1; 6561 // Tell autojoin the user did try to select to that network 6562 // However, do NOT persist the choice by bumping the priority of the network 6563 if (others) { 6564 mWifiAutoJoinController. 6565 updateConfigurationHistory(message.arg1, true, false); 6566 // Set the last selected configuration so as to allow the system to 6567 // stick the last user choice without persisting the choice 6568 mWifiConfigStore.setLastSelectedConfiguration(message.arg1); 6569 6570 // Remember time of last connection attempt 6571 lastConnectAttempt = System.currentTimeMillis(); 6572 6573 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6574 } 6575 // Cancel auto roam requests 6576 autoRoamSetBSSID(message.arg1, "any"); 6577 6578 ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1); 6579 if (!ok) { 6580 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6581 } 6582 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6583 break; 6584 case CMD_ENABLE_ALL_NETWORKS: 6585 long time = android.os.SystemClock.elapsedRealtime(); 6586 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 6587 mWifiConfigStore.enableAllNetworks(); 6588 mLastEnableAllNetworksTime = time; 6589 } 6590 break; 6591 case WifiManager.DISABLE_NETWORK: 6592 if (mWifiConfigStore.disableNetwork(message.arg1, 6593 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 6594 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 6595 } else { 6596 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6597 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 6598 WifiManager.ERROR); 6599 } 6600 break; 6601 case CMD_DISABLE_EPHEMERAL_NETWORK: 6602 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 6603 if (config != null) { 6604 if (config.networkId == mLastNetworkId) { 6605 // Disconnect and let autojoin reselect a new network 6606 sendMessage(CMD_DISCONNECT); 6607 } 6608 } 6609 break; 6610 case CMD_BLACKLIST_NETWORK: 6611 mWifiNative.addToBlacklist((String) message.obj); 6612 break; 6613 case CMD_CLEAR_BLACKLIST: 6614 mWifiNative.clearBlacklist(); 6615 break; 6616 case CMD_SAVE_CONFIG: 6617 ok = mWifiConfigStore.saveConfig(); 6618 6619 if (DBG) loge("wifistatemachine did save config " + ok); 6620 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 6621 6622 // Inform the backup manager about a data change 6623 IBackupManager ibm = IBackupManager.Stub.asInterface( 6624 ServiceManager.getService(Context.BACKUP_SERVICE)); 6625 if (ibm != null) { 6626 try { 6627 ibm.dataChanged("com.android.providers.settings"); 6628 } catch (Exception e) { 6629 // Try again later 6630 } 6631 } 6632 break; 6633 case CMD_GET_CONFIGURED_NETWORKS: 6634 replyToMessage(message, message.what, 6635 mWifiConfigStore.getConfiguredNetworks()); 6636 break; 6637 case WifiMonitor.SUP_REQUEST_IDENTITY: 6638 int networkId = message.arg2; 6639 boolean identitySent = false; 6640 int eapMethod = WifiEnterpriseConfig.Eap.NONE; 6641 6642 if (targetWificonfiguration != null 6643 && targetWificonfiguration.enterpriseConfig != null) { 6644 eapMethod = targetWificonfiguration.enterpriseConfig.getEapMethod(); 6645 } 6646 6647 // For SIM & AKA EAP method Only, get identity from ICC 6648 if (targetWificonfiguration != null 6649 && targetWificonfiguration.networkId == networkId 6650 && targetWificonfiguration.allowedKeyManagement 6651 .get(WifiConfiguration.KeyMgmt.IEEE8021X) 6652 && (eapMethod == WifiEnterpriseConfig.Eap.SIM 6653 || eapMethod == WifiEnterpriseConfig.Eap.AKA)) { 6654 TelephonyManager tm = (TelephonyManager) 6655 mContext.getSystemService(Context.TELEPHONY_SERVICE); 6656 if (tm != null) { 6657 String imsi = tm.getSubscriberId(); 6658 String mccMnc = ""; 6659 6660 if (tm.getSimState() == TelephonyManager.SIM_STATE_READY) 6661 mccMnc = tm.getSimOperator(); 6662 6663 String identity = buildIdentity(eapMethod, imsi, mccMnc); 6664 6665 if (!identity.isEmpty()) { 6666 mWifiNative.simIdentityResponse(networkId, identity); 6667 identitySent = true; 6668 } 6669 } 6670 } 6671 if (!identitySent) { 6672 // Supplicant lacks credentials to connect to that network, hence black list 6673 ssid = (String) message.obj; 6674 if (targetWificonfiguration != null && ssid != null 6675 && targetWificonfiguration.SSID != null 6676 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 6677 mWifiConfigStore.handleSSIDStateChange( 6678 targetWificonfiguration.networkId, false, 6679 "AUTH_FAILED no identity", null); 6680 } 6681 // Disconnect now, as we don't have any way to fullfill 6682 // the supplicant request. 6683 mWifiConfigStore.setLastSelectedConfiguration( 6684 WifiConfiguration.INVALID_NETWORK_ID); 6685 mWifiNative.disconnect(); 6686 } 6687 break; 6688 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 6689 logd("Received SUP_REQUEST_SIM_AUTH"); 6690 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 6691 if (requestData != null) { 6692 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 6693 handleGsmAuthRequest(requestData); 6694 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA) { 6695 handle3GAuthRequest(requestData); 6696 } 6697 } else { 6698 loge("Invalid sim auth request"); 6699 } 6700 break; 6701 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6702 replyToMessage(message, message.what, 6703 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 6704 break; 6705 /* Do a redundant disconnect without transition */ 6706 case CMD_DISCONNECT: 6707 mWifiConfigStore.setLastSelectedConfiguration 6708 (WifiConfiguration.INVALID_NETWORK_ID); 6709 mWifiNative.disconnect(); 6710 break; 6711 case CMD_RECONNECT: 6712 mWifiAutoJoinController.attemptAutoJoin(); 6713 break; 6714 case CMD_REASSOCIATE: 6715 lastConnectAttempt = System.currentTimeMillis(); 6716 mWifiNative.reassociate(); 6717 break; 6718 case CMD_RELOAD_TLS_AND_RECONNECT: 6719 if (mWifiConfigStore.needsUnlockedKeyStore()) { 6720 logd("Reconnecting to give a chance to un-connected TLS networks"); 6721 mWifiNative.disconnect(); 6722 lastConnectAttempt = System.currentTimeMillis(); 6723 mWifiNative.reconnect(); 6724 } 6725 break; 6726 case CMD_AUTO_ROAM: 6727 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 6728 return HANDLED; 6729 case CMD_AUTO_CONNECT: 6730 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 6731 * associated status to the STATUS command but somehow-someplace still thinks 6732 * it is associated and thus will ignore select/reconnect command with 6733 * following message: 6734 * "Already associated with the selected network - do nothing" 6735 * 6736 * Hence, sends a disconnect to supplicant first. 6737 */ 6738 didDisconnect = false; 6739 if (getCurrentState() != mDisconnectedState) { 6740 /** Supplicant will ignore the reconnect if we are currently associated, 6741 * hence trigger a disconnect 6742 */ 6743 didDisconnect = true; 6744 mWifiNative.disconnect(); 6745 } 6746 6747 /* connect command coming from auto-join */ 6748 config = (WifiConfiguration) message.obj; 6749 netId = message.arg1; 6750 int roam = message.arg2; 6751 loge("CMD_AUTO_CONNECT sup state " 6752 + mSupplicantStateTracker.getSupplicantStateName() 6753 + " my state " + getCurrentState().getName() 6754 + " nid=" + Integer.toString(netId) 6755 + " roam=" + Integer.toString(roam)); 6756 if (config == null) { 6757 loge("AUTO_CONNECT and no config, bail out..."); 6758 break; 6759 } 6760 6761 /* Make sure we cancel any previous roam request */ 6762 autoRoamSetBSSID(netId, config.BSSID); 6763 6764 /* Save the network config */ 6765 loge("CMD_AUTO_CONNECT will save config -> " + config.SSID 6766 + " nid=" + Integer.toString(netId)); 6767 result = mWifiConfigStore.saveNetwork(config, -1); 6768 netId = result.getNetworkId(); 6769 loge("CMD_AUTO_CONNECT did save config -> " 6770 + " nid=" + Integer.toString(netId)); 6771 6772 if (deferForUserInput(message, netId, false)) { 6773 break; 6774 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 6775 WifiConfiguration.USER_BANNED) { 6776 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6777 WifiManager.NOT_AUTHORIZED); 6778 break; 6779 } 6780 6781 // Make sure the network is enabled, since supplicant will not reenable it 6782 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6783 6784 if (mWifiConfigStore.selectNetwork(netId) && 6785 mWifiNative.reconnect()) { 6786 lastConnectAttempt = System.currentTimeMillis(); 6787 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6788 config = mWifiConfigStore.getWifiConfiguration(netId); 6789 if (config != null 6790 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 6791 // If we autojoined a different config than the user selected one, 6792 // it means we could not see the last user selection, 6793 // or that the last user selection was faulty and ended up blacklisted 6794 // for some reason (in which case the user is notified with an error 6795 // message in the Wifi picker), and thus we managed to auto-join away 6796 // from the selected config. -> in that case we need to forget 6797 // the selection because we don't want to abruptly switch back to it. 6798 // 6799 // Note that the user selection is also forgotten after a period of time 6800 // during which the device has been disconnected. 6801 // The default value is 30 minutes : see the code path at bottom of 6802 // setScanResults() function. 6803 mWifiConfigStore. 6804 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6805 } 6806 mAutoRoaming = roam; 6807 if (isRoaming() || linkDebouncing) { 6808 transitionTo(mRoamingState); 6809 } else if (didDisconnect) { 6810 transitionTo(mDisconnectingState); 6811 } else { 6812 /* Already in disconnected state, nothing to change */ 6813 } 6814 } else { 6815 loge("Failed to connect config: " + config + " netId: " + netId); 6816 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6817 WifiManager.ERROR); 6818 break; 6819 } 6820 break; 6821 case CMD_REMOVE_APP_CONFIGURATIONS: 6822 mWifiConfigStore.removeNetworksForApp((ApplicationInfo) message.obj); 6823 break; 6824 case CMD_REMOVE_USER_CONFIGURATIONS: 6825 mWifiConfigStore.removeNetworksForUser(message.arg1); 6826 break; 6827 case WifiManager.CONNECT_NETWORK: 6828 /** 6829 * The connect message can contain a network id passed as arg1 on message or 6830 * or a config passed as obj on message. 6831 * For a new network, a config is passed to create and connect. 6832 * For an existing network, a network id is passed 6833 */ 6834 netId = message.arg1; 6835 config = (WifiConfiguration) message.obj; 6836 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6837 boolean updatedExisting = false; 6838 6839 /* Save the network config */ 6840 if (config != null) { 6841 if (!recordUidIfAuthorized(config, message.sendingUid)) { 6842 loge("Not authorized to update network " 6843 + " config=" + config.SSID 6844 + " cnid=" + config.networkId 6845 + " uid=" + message.sendingUid); 6846 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6847 WifiManager.NOT_AUTHORIZED); 6848 break; 6849 } 6850 6851 String configKey = config.configKey(true /* allowCached */); 6852 WifiConfiguration savedConfig = 6853 mWifiConfigStore.getWifiConfiguration(configKey); 6854 if (savedConfig != null) { 6855 // There is an existing config with this netId, but it wasn't exposed 6856 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 6857 // getConfiguredNetworks). Remove those bits and update the config. 6858 config = savedConfig; 6859 loge("CONNECT_NETWORK updating existing config with id=" + 6860 config.networkId + " configKey=" + configKey); 6861 config.ephemeral = false; 6862 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 6863 updatedExisting = true; 6864 } 6865 6866 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 6867 netId = result.getNetworkId(); 6868 } 6869 config = mWifiConfigStore.getWifiConfiguration(netId); 6870 6871 if (config == null) { 6872 loge("CONNECT_NETWORK id=" + Integer.toString(netId) + " " 6873 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 6874 + getCurrentState().getName()); 6875 } else { 6876 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 6877 loge("CONNECT_NETWORK id=" + Integer.toString(netId) 6878 + " config=" + config.SSID 6879 + " cnid=" + config.networkId 6880 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 6881 + " my state " + getCurrentState().getName() 6882 + " uid = " + message.sendingUid 6883 + wasSkipped); 6884 } 6885 6886 autoRoamSetBSSID(netId, "any"); 6887 6888 if (message.sendingUid == Process.WIFI_UID 6889 || message.sendingUid == Process.SYSTEM_UID) { 6890 // As a sanity measure, clear the BSSID in the supplicant network block. 6891 // If system or Wifi Settings want to connect, they will not 6892 // specify the BSSID. 6893 // If an app however had added a BSSID to this configuration, and the BSSID 6894 // was wrong, Then we would forever fail to connect until that BSSID 6895 // is cleaned up. 6896 clearConfigBSSID(config, "CONNECT_NETWORK"); 6897 } 6898 6899 if (deferForUserInput(message, netId, true)) { 6900 break; 6901 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 6902 WifiConfiguration.USER_BANNED) { 6903 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6904 WifiManager.NOT_AUTHORIZED); 6905 break; 6906 } 6907 6908 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 6909 6910 /* Tell autojoin the user did try to connect to that network if from settings */ 6911 boolean persist = 6912 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 6913 mWifiAutoJoinController.updateConfigurationHistory(netId, true, persist); 6914 6915 mWifiConfigStore.setLastSelectedConfiguration(netId); 6916 6917 didDisconnect = false; 6918 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 6919 && mLastNetworkId != netId) { 6920 /** Supplicant will ignore the reconnect if we are currently associated, 6921 * hence trigger a disconnect 6922 */ 6923 didDisconnect = true; 6924 mWifiNative.disconnect(); 6925 } 6926 6927 // Make sure the network is enabled, since supplicant will not reenable it 6928 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6929 6930 if (mWifiConfigStore.selectNetwork(netId) && 6931 mWifiNative.reconnect()) { 6932 lastConnectAttempt = System.currentTimeMillis(); 6933 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6934 6935 /* The state tracker handles enabling networks upon completion/failure */ 6936 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 6937 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 6938 if (didDisconnect) { 6939 /* Expect a disconnection from the old connection */ 6940 transitionTo(mDisconnectingState); 6941 } else if (updatedExisting && getCurrentState() == mConnectedState && 6942 getCurrentWifiConfiguration().networkId == netId) { 6943 // Update the current set of network capabilities, but stay in the 6944 // current state. 6945 updateCapabilities(config); 6946 } else { 6947 /** 6948 * Directly go to disconnected state where we 6949 * process the connection events from supplicant 6950 **/ 6951 transitionTo(mDisconnectedState); 6952 } 6953 } else { 6954 loge("Failed to connect config: " + config + " netId: " + netId); 6955 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6956 WifiManager.ERROR); 6957 break; 6958 } 6959 break; 6960 case WifiManager.SAVE_NETWORK: 6961 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6962 // Fall thru 6963 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 6964 lastSavedConfigurationAttempt = null; // Used for debug 6965 config = (WifiConfiguration) message.obj; 6966 if (config == null) { 6967 loge("ERROR: SAVE_NETWORK with null configuration" 6968 + mSupplicantStateTracker.getSupplicantStateName() 6969 + " my state " + getCurrentState().getName()); 6970 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6971 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 6972 WifiManager.ERROR); 6973 break; 6974 } 6975 lastSavedConfigurationAttempt = new WifiConfiguration(config); 6976 int nid = config.networkId; 6977 loge("SAVE_NETWORK id=" + Integer.toString(nid) 6978 + " config=" + config.SSID 6979 + " nid=" + config.networkId 6980 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 6981 + " my state " + getCurrentState().getName()); 6982 6983 // Only record the uid if this is user initiated 6984 boolean checkUid = (message.what == WifiManager.SAVE_NETWORK); 6985 if (checkUid && !recordUidIfAuthorized(config, message.sendingUid)) { 6986 loge("Not authorized to update network " 6987 + " config=" + config.SSID 6988 + " cnid=" + config.networkId 6989 + " uid=" + message.sendingUid); 6990 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 6991 WifiManager.NOT_AUTHORIZED); 6992 break; 6993 } 6994 6995 result = mWifiConfigStore.saveNetwork(config, -1); 6996 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 6997 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 6998 if (result.hasIpChanged()) { 6999 // The currently connection configuration was changed 7000 // We switched from DHCP to static or from static to DHCP, or the 7001 // static IP address has changed. 7002 log("Reconfiguring IP on connection"); 7003 // TODO: clear addresses and disable IPv6 7004 // to simplify obtainingIpState. 7005 transitionTo(mObtainingIpState); 7006 } 7007 if (result.hasProxyChanged()) { 7008 log("Reconfiguring proxy on connection"); 7009 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 7010 } 7011 } 7012 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 7013 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config); 7014 7015 if (VDBG) { 7016 loge("Success save network nid=" 7017 + Integer.toString(result.getNetworkId())); 7018 } 7019 7020 synchronized(mScanResultCache) { 7021 /** 7022 * If the command comes from WifiManager, then 7023 * tell autojoin the user did try to modify and save that network, 7024 * and interpret the SAVE_NETWORK as a request to connect 7025 */ 7026 boolean user = message.what == WifiManager.SAVE_NETWORK; 7027 7028 // Did this connect come from settings 7029 boolean persistConnect = 7030 mWifiConfigStore.checkConfigOverridePermission(message.sendingUid); 7031 7032 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 7033 , user, persistConnect); 7034 mWifiAutoJoinController.attemptAutoJoin(); 7035 } 7036 } else { 7037 loge("Failed to save network"); 7038 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7039 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 7040 WifiManager.ERROR); 7041 } 7042 break; 7043 case WifiManager.FORGET_NETWORK: 7044 // Debug only, remember last configuration that was forgotten 7045 WifiConfiguration toRemove 7046 = mWifiConfigStore.getWifiConfiguration(message.arg1); 7047 if (toRemove == null) { 7048 lastForgetConfigurationAttempt = null; 7049 } else { 7050 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 7051 } 7052 // check that the caller owns this network 7053 netId = message.arg1; 7054 7055 if (!mWifiConfigStore.canModifyNetwork(message.sendingUid, netId)) { 7056 loge("Not authorized to forget network " 7057 + " cnid=" + netId 7058 + " uid=" + message.sendingUid); 7059 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7060 WifiManager.NOT_AUTHORIZED); 7061 break; 7062 } 7063 7064 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 7065 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 7066 broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT, 7067 (WifiConfiguration) message.obj); 7068 } else { 7069 loge("Failed to forget network"); 7070 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 7071 WifiManager.ERROR); 7072 } 7073 break; 7074 case WifiManager.START_WPS: 7075 WpsInfo wpsInfo = (WpsInfo) message.obj; 7076 WpsResult wpsResult; 7077 switch (wpsInfo.setup) { 7078 case WpsInfo.PBC: 7079 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 7080 break; 7081 case WpsInfo.KEYPAD: 7082 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 7083 break; 7084 case WpsInfo.DISPLAY: 7085 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 7086 break; 7087 default: 7088 wpsResult = new WpsResult(Status.FAILURE); 7089 loge("Invalid setup for WPS"); 7090 break; 7091 } 7092 mWifiConfigStore.setLastSelectedConfiguration 7093 (WifiConfiguration.INVALID_NETWORK_ID); 7094 if (wpsResult.status == Status.SUCCESS) { 7095 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 7096 transitionTo(mWpsRunningState); 7097 } else { 7098 loge("Failed to start WPS with config " + wpsInfo.toString()); 7099 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 7100 } 7101 break; 7102 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7103 if (DBG) log("Network connection established"); 7104 mLastNetworkId = message.arg1; 7105 mLastBssid = (String) message.obj; 7106 7107 mWifiInfo.setBSSID(mLastBssid); 7108 mWifiInfo.setNetworkId(mLastNetworkId); 7109 7110 sendNetworkStateChangeBroadcast(mLastBssid); 7111 transitionTo(mObtainingIpState); 7112 break; 7113 case WifiMonitor.ANQP_DONE_EVENT: 7114 Log.d("HS2J", String.format("WFSM: ANQP for %016x %s", 7115 (Long)message.obj, message.arg1 != 0 ? "success" : "fail")); 7116 mWifiAutoJoinController.notifyANQPDone((Long) message.obj, message.arg1 != 0); 7117 break; 7118 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7119 // Calling handleNetworkDisconnect here is redundant because we might already 7120 // have called it when leaving L2ConnectedState to go to disconnecting state 7121 // or thru other path 7122 // We should normally check the mWifiInfo or mLastNetworkId so as to check 7123 // if they are valid, and only in this case call handleNEtworkDisconnect, 7124 // TODO: this should be fixed for a L MR release 7125 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 7126 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 7127 // at the chip etc... 7128 if (DBG) log("ConnectModeState: Network connection lost "); 7129 handleNetworkDisconnect(); 7130 transitionTo(mDisconnectedState); 7131 break; 7132 default: 7133 return NOT_HANDLED; 7134 } 7135 return HANDLED; 7136 } 7137 } 7138 7139 private void updateCapabilities(WifiConfiguration config) { 7140 if (config.ephemeral) { 7141 mNetworkCapabilities.removeCapability( 7142 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7143 } else { 7144 mNetworkCapabilities.addCapability( 7145 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 7146 } 7147 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 7148 } 7149 7150 private class WifiNetworkAgent extends NetworkAgent { 7151 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 7152 NetworkCapabilities nc, LinkProperties lp, int score) { 7153 super(l, c, TAG, ni, nc, lp, score); 7154 } 7155 protected void unwanted() { 7156 // Ignore if we're not the current networkAgent. 7157 if (this != mNetworkAgent) return; 7158 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 7159 + Integer.toString(mWifiInfo.score)); 7160 unwantedNetwork(network_status_unwanted_disconnect); 7161 } 7162 7163 protected void networkStatus(int status) { 7164 if (status == NetworkAgent.INVALID_NETWORK) { 7165 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 7166 + Integer.toString(mWifiInfo.score)); 7167 unwantedNetwork(network_status_unwanted_disable_autojoin); 7168 } else if (status == NetworkAgent.VALID_NETWORK) { 7169 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 7170 + Integer.toString(mWifiInfo.score)); 7171 doNetworkStatus(status); 7172 } 7173 } 7174 } 7175 7176 void unwantedNetwork(int reason) { 7177 sendMessage(CMD_UNWANTED_NETWORK, reason); 7178 } 7179 7180 void doNetworkStatus(int status) { 7181 sendMessage(CMD_NETWORK_STATUS, status); 7182 } 7183 7184 // rfc4186 & rfc4187: 7185 // create Permanent Identity base on IMSI, 7186 // identity = usernam@realm 7187 // with username = prefix | IMSI 7188 // and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003) 7189 private String buildIdentity(int eapMethod, String imsi, String mccMnc) { 7190 String mcc; 7191 String mnc; 7192 String prefix; 7193 7194 if (imsi == null || imsi.isEmpty()) 7195 return ""; 7196 7197 if (eapMethod == WifiEnterpriseConfig.Eap.SIM) 7198 prefix = "1"; 7199 else if (eapMethod == WifiEnterpriseConfig.Eap.AKA) 7200 prefix = "0"; 7201 else // not a valide EapMethod 7202 return ""; 7203 7204 /* extract mcc & mnc from mccMnc */ 7205 if (mccMnc != null && !mccMnc.isEmpty()) { 7206 mcc = mccMnc.substring(0, 3); 7207 mnc = mccMnc.substring(3); 7208 if (mnc.length() == 2) 7209 mnc = "0" + mnc; 7210 } else { 7211 // extract mcc & mnc from IMSI, assume mnc size is 3 7212 mcc = imsi.substring(0, 3); 7213 mnc = imsi.substring(3, 6); 7214 } 7215 7216 return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org"; 7217 } 7218 7219 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 7220 if (config == null) 7221 return false; 7222 7223 // We are still seeing a fairly high power consumption triggered by autojoin scans 7224 // Hence do partial scans only for PSK configuration that are roamable since the 7225 // primary purpose of the partial scans is roaming. 7226 // Full badn scans with exponential backoff for the purpose or extended roaming and 7227 // network switching are performed unconditionally. 7228 if (config.scanResultCache == null 7229 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 7230 || config.scanResultCache.size() > 6) { 7231 //return true but to not trigger the scan 7232 return true; 7233 } 7234 HashSet<Integer> channels 7235 = mWifiConfigStore.makeChannelList(config, 7236 ONE_HOUR_MILLI, restrictChannelList); 7237 if (channels != null && channels.size() != 0) { 7238 StringBuilder freqs = new StringBuilder(); 7239 boolean first = true; 7240 for (Integer channel : channels) { 7241 if (!first) 7242 freqs.append(","); 7243 freqs.append(channel.toString()); 7244 first = false; 7245 } 7246 //if (DBG) { 7247 loge("WifiStateMachine starting scan for " + config.configKey() + " with " + freqs); 7248 //} 7249 // Call wifi native to start the scan 7250 if (startScanNative( 7251 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 7252 freqs.toString())) { 7253 // Only count battery consumption if scan request is accepted 7254 noteScanStart(SCAN_ALARM_SOURCE, null); 7255 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 7256 } else { 7257 // used for debug only, mark scan as failed 7258 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7259 } 7260 return true; 7261 } else { 7262 if (DBG) loge("WifiStateMachine no channels for " + config.configKey()); 7263 return false; 7264 } 7265 } 7266 7267 void clearCurrentConfigBSSID(String dbg) { 7268 // Clear the bssid in the current config's network block 7269 WifiConfiguration config = getCurrentWifiConfiguration(); 7270 if (config == null) 7271 return; 7272 clearConfigBSSID(config, dbg); 7273 } 7274 void clearConfigBSSID(WifiConfiguration config, String dbg) { 7275 if (config == null) 7276 return; 7277 if (DBG) { 7278 loge(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 7279 + " config.bssid " + config.BSSID); 7280 } 7281 config.autoJoinBSSID = "any"; 7282 config.BSSID = "any"; 7283 if (DBG) { 7284 loge(dbg + " " + config.SSID 7285 + " nid=" + Integer.toString(config.networkId)); 7286 } 7287 mWifiConfigStore.saveWifiConfigBSSID(config); 7288 } 7289 7290 class L2ConnectedState extends State { 7291 @Override 7292 public void enter() { 7293 mRssiPollToken++; 7294 if (mEnableRssiPolling) { 7295 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 7296 } 7297 if (mNetworkAgent != null) { 7298 loge("Have NetworkAgent when entering L2Connected"); 7299 setNetworkDetailedState(DetailedState.DISCONNECTED); 7300 } 7301 setNetworkDetailedState(DetailedState.CONNECTING); 7302 7303 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 7304 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 7305 } 7306 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 7307 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 7308 mLinkProperties, 60); 7309 7310 // We must clear the config BSSID, as the wifi chipset may decide to roam 7311 // from this point on and having the BSSID specified in the network block would 7312 // cause the roam to faile and the device to disconnect 7313 clearCurrentConfigBSSID("L2ConnectedState"); 7314 } 7315 7316 @Override 7317 public void exit() { 7318 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 7319 // Bug: 15347363 7320 // For paranoia's sake, call handleNetworkDisconnect 7321 // only if BSSID is null or last networkId 7322 // is not invalid. 7323 if (DBG) { 7324 StringBuilder sb = new StringBuilder(); 7325 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 7326 if (mLastBssid !=null) { 7327 sb.append(" ").append(mLastBssid); 7328 } 7329 } 7330 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 7331 handleNetworkDisconnect(); 7332 } 7333 } 7334 7335 @Override 7336 public boolean processMessage(Message message) { 7337 logStateAndMessage(message, getClass().getSimpleName()); 7338 7339 switch (message.what) { 7340 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 7341 handlePreDhcpSetup(); 7342 break; 7343 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 7344 handlePostDhcpSetup(); 7345 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 7346 if (DBG) log("WifiStateMachine DHCP successful"); 7347 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 7348 // We advance to mVerifyingLinkState because handleIPv4Success will call 7349 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 7350 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 7351 if (DBG) { 7352 int count = -1; 7353 WifiConfiguration config = getCurrentWifiConfiguration(); 7354 if (config != null) { 7355 count = config.numConnectionFailures; 7356 } 7357 log("WifiStateMachine DHCP failure count=" + count); 7358 } 7359 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 7360 // As above, we transition to mDisconnectingState via updateLinkProperties. 7361 } 7362 break; 7363 case CMD_IP_CONFIGURATION_SUCCESSFUL: 7364 handleSuccessfulIpConfiguration(); 7365 sendConnectedState(); 7366 transitionTo(mConnectedState); 7367 break; 7368 case CMD_IP_CONFIGURATION_LOST: 7369 // Get Link layer stats so as we get fresh tx packet counters 7370 getWifiLinkLayerStats(true); 7371 handleIpConfigurationLost(); 7372 transitionTo(mDisconnectingState); 7373 break; 7374 case CMD_DISCONNECT: 7375 mWifiNative.disconnect(); 7376 transitionTo(mDisconnectingState); 7377 break; 7378 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7379 if (message.arg1 == 1) { 7380 mWifiNative.disconnect(); 7381 mTemporarilyDisconnectWifi = true; 7382 transitionTo(mDisconnectingState); 7383 } 7384 break; 7385 case CMD_SET_OPERATIONAL_MODE: 7386 if (message.arg1 != CONNECT_MODE) { 7387 sendMessage(CMD_DISCONNECT); 7388 deferMessage(message); 7389 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 7390 noteWifiDisabledWhileAssociated(); 7391 } 7392 } 7393 mWifiConfigStore. 7394 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7395 break; 7396 case CMD_SET_COUNTRY_CODE: 7397 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7398 deferMessage(message); 7399 break; 7400 case CMD_START_SCAN: 7401 //if (DBG) { 7402 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7403 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 7404 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 7405 + " targetRoamBSSID=" + mTargetRoamBSSID 7406 + " RSSI=" + mWifiInfo.getRssi()); 7407 //} 7408 if (message.arg1 == SCAN_ALARM_SOURCE) { 7409 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 7410 // not be processed) and restart the scan if needed 7411 boolean shouldScan = 7412 mScreenOn && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get(); 7413 if (!checkAndRestartDelayedScan(message.arg2, 7414 shouldScan, 7415 mWifiConfigStore.associatedPartialScanPeriodMilli.get(), null, null)) { 7416 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 7417 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7418 + message.arg1 7419 + " " + message.arg2 + ", " + mDelayedScanCounter 7420 + " -> obsolete"); 7421 return HANDLED; 7422 } 7423 if (mP2pConnected.get()) { 7424 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7425 + message.arg1 7426 + " " + message.arg2 + ", " + mDelayedScanCounter 7427 + " ignore because P2P is connected"); 7428 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7429 return HANDLED; 7430 } 7431 boolean tryFullBandScan = false; 7432 boolean restrictChannelList = false; 7433 long now_ms = System.currentTimeMillis(); 7434 if (DBG) { 7435 loge("WifiStateMachine CMD_START_SCAN with age=" 7436 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7437 + " interval=" + fullBandConnectedTimeIntervalMilli 7438 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7439 } 7440 if (mWifiInfo != null) { 7441 if (mWifiConfigStore.enableFullBandScanWhenAssociated.get() && 7442 (now_ms - lastFullBandConnectedTimeMilli) 7443 > fullBandConnectedTimeIntervalMilli) { 7444 if (DBG) { 7445 loge("WifiStateMachine CMD_START_SCAN try full band scan age=" 7446 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7447 + " interval=" + fullBandConnectedTimeIntervalMilli 7448 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7449 } 7450 tryFullBandScan = true; 7451 } 7452 7453 if (mWifiInfo.txSuccessRate > 7454 mWifiConfigStore.maxTxPacketForFullScans 7455 || mWifiInfo.rxSuccessRate > 7456 mWifiConfigStore.maxRxPacketForFullScans) { 7457 // Too much traffic at the interface, hence no full band scan 7458 if (DBG) { 7459 loge("WifiStateMachine CMD_START_SCAN " + 7460 "prevent full band scan due to pkt rate"); 7461 } 7462 tryFullBandScan = false; 7463 } 7464 7465 if (mWifiInfo.txSuccessRate > 7466 mWifiConfigStore.maxTxPacketForPartialScans 7467 || mWifiInfo.rxSuccessRate > 7468 mWifiConfigStore.maxRxPacketForPartialScans) { 7469 // Don't scan if lots of packets are being sent 7470 restrictChannelList = true; 7471 if (mWifiConfigStore.alwaysEnableScansWhileAssociated.get() == 0) { 7472 if (DBG) { 7473 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7474 + " ...and ignore scans" 7475 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 7476 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 7477 } 7478 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 7479 return HANDLED; 7480 } 7481 } 7482 } 7483 7484 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 7485 if (DBG) { 7486 loge("WifiStateMachine CMD_START_SCAN full=" + 7487 tryFullBandScan); 7488 } 7489 if (currentConfiguration != null) { 7490 if (fullBandConnectedTimeIntervalMilli 7491 < mWifiConfigStore.associatedPartialScanPeriodMilli.get()) { 7492 // Sanity 7493 fullBandConnectedTimeIntervalMilli 7494 = mWifiConfigStore.associatedPartialScanPeriodMilli.get(); 7495 } 7496 if (tryFullBandScan) { 7497 lastFullBandConnectedTimeMilli = now_ms; 7498 if (fullBandConnectedTimeIntervalMilli 7499 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7500 // Increase the interval 7501 fullBandConnectedTimeIntervalMilli 7502 = fullBandConnectedTimeIntervalMilli 7503 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 7504 7505 if (DBG) { 7506 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7507 + fullBandConnectedTimeIntervalMilli); 7508 } 7509 } 7510 handleScanRequest( 7511 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7512 } else { 7513 if (!startScanForConfiguration( 7514 currentConfiguration, restrictChannelList)) { 7515 if (DBG) { 7516 loge("WifiStateMachine starting scan, " + 7517 " did not find channels -> full"); 7518 } 7519 lastFullBandConnectedTimeMilli = now_ms; 7520 if (fullBandConnectedTimeIntervalMilli 7521 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7522 // Increase the interval 7523 fullBandConnectedTimeIntervalMilli 7524 = fullBandConnectedTimeIntervalMilli 7525 * mWifiConfigStore.associatedFullScanBackoff.get() / 8; 7526 7527 if (DBG) { 7528 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7529 + fullBandConnectedTimeIntervalMilli); 7530 } 7531 } 7532 handleScanRequest( 7533 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7534 } 7535 } 7536 7537 } else { 7538 loge("CMD_START_SCAN : connected mode and no configuration"); 7539 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7540 } 7541 } else { 7542 // Not scan alarm source 7543 return NOT_HANDLED; 7544 } 7545 break; 7546 /* Ignore connection to same network */ 7547 case WifiManager.CONNECT_NETWORK: 7548 int netId = message.arg1; 7549 if (mWifiInfo.getNetworkId() == netId) { 7550 break; 7551 } 7552 return NOT_HANDLED; 7553 /* Ignore */ 7554 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7555 break; 7556 case CMD_RSSI_POLL: 7557 if (message.arg1 == mRssiPollToken) { 7558 if (mWifiConfigStore.enableChipWakeUpWhenAssociated.get()) { 7559 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 7560 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 7561 if (stats != null) { 7562 // Sanity check the results provided by driver 7563 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 7564 && (stats.rssi_mgmt == 0 7565 || stats.beacon_rx == 0)) { 7566 stats = null; 7567 } 7568 } 7569 // Get Info and continue polling 7570 fetchRssiLinkSpeedAndFrequencyNative(); 7571 calculateWifiScore(stats); 7572 } 7573 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7574 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7575 7576 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 7577 } else { 7578 // Polling has completed 7579 } 7580 break; 7581 case CMD_ENABLE_RSSI_POLL: 7582 if (mWifiConfigStore.enableRssiPollWhenAssociated.get()) { 7583 mEnableRssiPolling = (message.arg1 == 1); 7584 } else { 7585 mEnableRssiPolling = false; 7586 } 7587 mRssiPollToken++; 7588 if (mEnableRssiPolling) { 7589 // First poll 7590 fetchRssiLinkSpeedAndFrequencyNative(); 7591 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7592 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7593 } else { 7594 cleanWifiScore(); 7595 } 7596 break; 7597 case WifiManager.RSSI_PKTCNT_FETCH: 7598 RssiPacketCountInfo info = new RssiPacketCountInfo(); 7599 fetchRssiLinkSpeedAndFrequencyNative(); 7600 info.rssi = mWifiInfo.getRssi(); 7601 fetchPktcntNative(info); 7602 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 7603 break; 7604 case CMD_DELAYED_NETWORK_DISCONNECT: 7605 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 7606 7607 // Ignore if we are not debouncing 7608 loge("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 7609 + message.arg1); 7610 return HANDLED; 7611 } else { 7612 loge("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 7613 + message.arg1); 7614 7615 linkDebouncing = false; 7616 // If we are still debouncing while this message comes, 7617 // it means we were not able to reconnect within the alloted time 7618 // = LINK_FLAPPING_DEBOUNCE_MSEC 7619 // and thus, trigger a real disconnect 7620 handleNetworkDisconnect(); 7621 transitionTo(mDisconnectedState); 7622 } 7623 break; 7624 case CMD_ASSOCIATED_BSSID: 7625 if ((String) message.obj == null) { 7626 loge("Associated command w/o BSSID"); 7627 break; 7628 } 7629 mLastBssid = (String) message.obj; 7630 if (mLastBssid != null 7631 && (mWifiInfo.getBSSID() == null 7632 || !mLastBssid.equals(mWifiInfo.getBSSID()))) { 7633 mWifiInfo.setBSSID((String) message.obj); 7634 sendNetworkStateChangeBroadcast(mLastBssid); 7635 } 7636 break; 7637 default: 7638 return NOT_HANDLED; 7639 } 7640 7641 return HANDLED; 7642 } 7643 } 7644 7645 class ObtainingIpState extends State { 7646 @Override 7647 public void enter() { 7648 if (DBG) { 7649 String key = ""; 7650 if (getCurrentWifiConfiguration() != null) { 7651 key = getCurrentWifiConfiguration().configKey(); 7652 } 7653 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 7654 + " " + key + " " 7655 + " roam=" + mAutoRoaming 7656 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 7657 + " watchdog= " + obtainingIpWatchdogCount); 7658 } 7659 7660 // Reset link Debouncing, indicating we have successfully re-connected to the AP 7661 // We might still be roaming 7662 linkDebouncing = false; 7663 7664 // Send event to CM & network change broadcast 7665 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 7666 7667 // We must clear the config BSSID, as the wifi chipset may decide to roam 7668 // from this point on and having the BSSID specified in the network block would 7669 // cause the roam to faile and the device to disconnect 7670 clearCurrentConfigBSSID("ObtainingIpAddress"); 7671 7672 try { 7673 mNwService.enableIpv6(mInterfaceName); 7674 } catch (RemoteException re) { 7675 loge("Failed to enable IPv6: " + re); 7676 } catch (IllegalStateException e) { 7677 loge("Failed to enable IPv6: " + e); 7678 } 7679 7680 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 7681 if (isRoaming()) { 7682 renewDhcp(); 7683 } else { 7684 // Remove any IP address on the interface in case we're switching from static 7685 // IP configuration to DHCP. This is safe because if we get here when not 7686 // roaming, we don't have a usable address. 7687 clearIPv4Address(mInterfaceName); 7688 startDhcp(); 7689 } 7690 obtainingIpWatchdogCount++; 7691 loge("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 7692 // Get Link layer stats so as we get fresh tx packet counters 7693 getWifiLinkLayerStats(true); 7694 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 7695 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 7696 } else { 7697 // stop any running dhcp before assigning static IP 7698 stopDhcp(); 7699 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 7700 mLastNetworkId); 7701 if (config.ipAddress == null) { 7702 loge("Static IP lacks address"); 7703 sendMessage(CMD_STATIC_IP_FAILURE); 7704 } else { 7705 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 7706 ifcg.setLinkAddress(config.ipAddress); 7707 ifcg.setInterfaceUp(); 7708 try { 7709 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 7710 if (DBG) log("Static IP configuration succeeded"); 7711 DhcpResults dhcpResults = new DhcpResults(config); 7712 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 7713 } catch (RemoteException re) { 7714 loge("Static IP configuration failed: " + re); 7715 sendMessage(CMD_STATIC_IP_FAILURE); 7716 } catch (IllegalStateException e) { 7717 loge("Static IP configuration failed: " + e); 7718 sendMessage(CMD_STATIC_IP_FAILURE); 7719 } 7720 } 7721 } 7722 } 7723 @Override 7724 public boolean processMessage(Message message) { 7725 logStateAndMessage(message, getClass().getSimpleName()); 7726 7727 switch(message.what) { 7728 case CMD_STATIC_IP_SUCCESS: 7729 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 7730 break; 7731 case CMD_STATIC_IP_FAILURE: 7732 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 7733 break; 7734 case CMD_AUTO_CONNECT: 7735 case CMD_AUTO_ROAM: 7736 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7737 break; 7738 case WifiManager.SAVE_NETWORK: 7739 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7740 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7741 deferMessage(message); 7742 break; 7743 /* Defer any power mode changes since we must keep active power mode at DHCP */ 7744 case CMD_SET_HIGH_PERF_MODE: 7745 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7746 deferMessage(message); 7747 break; 7748 /* Defer scan request since we should not switch to other channels at DHCP */ 7749 case CMD_START_SCAN: 7750 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7751 deferMessage(message); 7752 break; 7753 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 7754 if (message.arg1 == obtainingIpWatchdogCount) { 7755 loge("ObtainingIpAddress: Watchdog Triggered, count=" 7756 + obtainingIpWatchdogCount); 7757 handleIpConfigurationLost(); 7758 transitionTo(mDisconnectingState); 7759 break; 7760 } 7761 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7762 break; 7763 default: 7764 return NOT_HANDLED; 7765 } 7766 return HANDLED; 7767 } 7768 } 7769 7770 class VerifyingLinkState extends State { 7771 @Override 7772 public void enter() { 7773 log(getName() + " enter"); 7774 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 7775 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 7776 sendNetworkStateChangeBroadcast(mLastBssid); 7777 // End roaming 7778 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7779 } 7780 @Override 7781 public boolean processMessage(Message message) { 7782 logStateAndMessage(message, getClass().getSimpleName()); 7783 7784 switch (message.what) { 7785 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7786 // Stay here 7787 log(getName() + " POOR_LINK_DETECTED: no transition"); 7788 break; 7789 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 7790 log(getName() + " GOOD_LINK_DETECTED: transition to captive portal check"); 7791 7792 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 7793 sendConnectedState(); 7794 transitionTo(mConnectedState); 7795 break; 7796 default: 7797 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 7798 return NOT_HANDLED; 7799 } 7800 return HANDLED; 7801 } 7802 } 7803 7804 private void sendConnectedState() { 7805 // Send out a broadcast with the CAPTIVE_PORTAL_CHECK to preserve 7806 // existing behaviour. The captive portal check really happens after we 7807 // transition into DetailedState.CONNECTED. 7808 setNetworkDetailedState(DetailedState.CAPTIVE_PORTAL_CHECK); 7809 mWifiConfigStore.updateStatus(mLastNetworkId, 7810 DetailedState.CAPTIVE_PORTAL_CHECK); 7811 sendNetworkStateChangeBroadcast(mLastBssid); 7812 7813 if (mWifiConfigStore.getLastSelectedConfiguration() != null) { 7814 if (mNetworkAgent != null) mNetworkAgent.explicitlySelected(); 7815 } 7816 7817 setNetworkDetailedState(DetailedState.CONNECTED); 7818 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 7819 sendNetworkStateChangeBroadcast(mLastBssid); 7820 } 7821 7822 class RoamingState extends State { 7823 boolean mAssociated; 7824 @Override 7825 public void enter() { 7826 if (DBG) { 7827 log("RoamingState Enter" 7828 + " mScreenOn=" + mScreenOn ); 7829 } 7830 setScanAlarm(false); 7831 7832 // Make sure we disconnect if roaming fails 7833 roamWatchdogCount++; 7834 loge("Start Roam Watchdog " + roamWatchdogCount); 7835 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 7836 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 7837 mAssociated = false; 7838 } 7839 @Override 7840 public boolean processMessage(Message message) { 7841 logStateAndMessage(message, getClass().getSimpleName()); 7842 WifiConfiguration config; 7843 switch (message.what) { 7844 case CMD_IP_CONFIGURATION_LOST: 7845 config = getCurrentWifiConfiguration(); 7846 if (config != null) { 7847 mWifiConfigStore.noteRoamingFailure(config, 7848 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 7849 } 7850 return NOT_HANDLED; 7851 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7852 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 7853 return HANDLED; 7854 case CMD_UNWANTED_NETWORK: 7855 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 7856 return HANDLED; 7857 case CMD_SET_OPERATIONAL_MODE: 7858 if (message.arg1 != CONNECT_MODE) { 7859 deferMessage(message); 7860 } 7861 break; 7862 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7863 /** 7864 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 7865 * before NETWORK_DISCONNECTION_EVENT 7866 * And there is an associated BSSID corresponding to our target BSSID, then 7867 * we have missed the network disconnection, transition to mDisconnectedState 7868 * and handle the rest of the events there. 7869 */ 7870 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 7871 if (stateChangeResult.state == SupplicantState.DISCONNECTED 7872 || stateChangeResult.state == SupplicantState.INACTIVE 7873 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 7874 if (DBG) { 7875 log("STATE_CHANGE_EVENT in roaming state " 7876 + stateChangeResult.toString() ); 7877 } 7878 if (stateChangeResult.BSSID != null 7879 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 7880 handleNetworkDisconnect(); 7881 transitionTo(mDisconnectedState); 7882 } 7883 } 7884 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 7885 // We completed the layer2 roaming part 7886 mAssociated = true; 7887 if (stateChangeResult.BSSID != null) { 7888 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 7889 } 7890 } 7891 break; 7892 case CMD_ROAM_WATCHDOG_TIMER: 7893 if (roamWatchdogCount == message.arg1) { 7894 if (DBG) log("roaming watchdog! -> disconnect"); 7895 mRoamFailCount++; 7896 handleNetworkDisconnect(); 7897 mWifiNative.disconnect(); 7898 transitionTo(mDisconnectedState); 7899 } 7900 break; 7901 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7902 if (mAssociated) { 7903 if (DBG) log("roaming and Network connection established"); 7904 mLastNetworkId = message.arg1; 7905 mLastBssid = (String) message.obj; 7906 mWifiInfo.setBSSID(mLastBssid); 7907 mWifiInfo.setNetworkId(mLastNetworkId); 7908 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 7909 sendNetworkStateChangeBroadcast(mLastBssid); 7910 transitionTo(mObtainingIpState); 7911 } else { 7912 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7913 } 7914 break; 7915 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7916 // Throw away but only if it corresponds to the network we're roaming to 7917 String bssid = (String)message.obj; 7918 if (true) { 7919 String target = ""; 7920 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 7921 log("NETWORK_DISCONNECTION_EVENT in roaming state" 7922 + " BSSID=" + bssid 7923 + " target=" + target); 7924 } 7925 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 7926 handleNetworkDisconnect(); 7927 transitionTo(mDisconnectedState); 7928 } 7929 break; 7930 case WifiMonitor.SSID_TEMP_DISABLED: 7931 // Auth error while roaming 7932 loge("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 7933 + " id=" + Integer.toString(message.arg1) 7934 + " isRoaming=" + isRoaming() 7935 + " roam=" + Integer.toString(mAutoRoaming)); 7936 if (message.arg1 == mLastNetworkId) { 7937 config = getCurrentWifiConfiguration(); 7938 if (config != null) { 7939 mWifiConfigStore.noteRoamingFailure(config, 7940 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 7941 } 7942 handleNetworkDisconnect(); 7943 transitionTo(mDisconnectingState); 7944 } 7945 return NOT_HANDLED; 7946 case CMD_START_SCAN: 7947 deferMessage(message); 7948 break; 7949 default: 7950 return NOT_HANDLED; 7951 } 7952 return HANDLED; 7953 } 7954 7955 @Override 7956 public void exit() { 7957 loge("WifiStateMachine: Leaving Roaming state"); 7958 } 7959 } 7960 7961 class ConnectedState extends State { 7962 @Override 7963 public void enter() { 7964 String address; 7965 updateDefaultRouteMacAddress(1000); 7966 if (DBG) { 7967 log("ConnectedState Enter " 7968 + " mScreenOn=" + mScreenOn 7969 + " scanperiod=" 7970 + Integer.toString(mWifiConfigStore.associatedPartialScanPeriodMilli.get()) ); 7971 } 7972 if (mScreenOn 7973 && mWifiConfigStore.enableAutoJoinScanWhenAssociated.get()) { 7974 // restart scan alarm 7975 startDelayedScan(mWifiConfigStore.associatedPartialScanPeriodMilli.get(), null, null); 7976 } 7977 registerConnected(); 7978 lastConnectAttempt = 0; 7979 targetWificonfiguration = null; 7980 // Paranoia 7981 linkDebouncing = false; 7982 7983 // Not roaming anymore 7984 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7985 7986 if (testNetworkDisconnect) { 7987 testNetworkDisconnectCounter++; 7988 loge("ConnectedState Enter start disconnect test " + 7989 testNetworkDisconnectCounter); 7990 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 7991 testNetworkDisconnectCounter, 0), 15000); 7992 } 7993 7994 // Reenable all networks, allow for hidden networks to be scanned 7995 mWifiConfigStore.enableAllNetworks(); 7996 7997 mLastDriverRoamAttempt = 0; 7998 } 7999 @Override 8000 public boolean processMessage(Message message) { 8001 WifiConfiguration config = null; 8002 logStateAndMessage(message, getClass().getSimpleName()); 8003 8004 switch (message.what) { 8005 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 8006 if (DBG) log("Watchdog reports poor link"); 8007 transitionTo(mVerifyingLinkState); 8008 break; 8009 case CMD_UNWANTED_NETWORK: 8010 if (message.arg1 == network_status_unwanted_disconnect) { 8011 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 8012 mWifiNative.disconnect(); 8013 transitionTo(mDisconnectingState); 8014 } else if (message.arg1 == network_status_unwanted_disable_autojoin) { 8015 config = getCurrentWifiConfiguration(); 8016 if (config != null) { 8017 // Disable autojoin 8018 config.numNoInternetAccessReports += 1; 8019 } 8020 } 8021 return HANDLED; 8022 case CMD_NETWORK_STATUS: 8023 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 8024 config = getCurrentWifiConfiguration(); 8025 if (config != null) { 8026 // re-enable autojoin 8027 config.numNoInternetAccessReports = 0; 8028 config.validatedInternetAccess = true; 8029 } 8030 } 8031 return HANDLED; 8032 case CMD_TEST_NETWORK_DISCONNECT: 8033 // Force a disconnect 8034 if (message.arg1 == testNetworkDisconnectCounter) { 8035 mWifiNative.disconnect(); 8036 } 8037 break; 8038 case CMD_ASSOCIATED_BSSID: 8039 // ASSOCIATING to a new BSSID while already connected, indicates 8040 // that driver is roaming 8041 mLastDriverRoamAttempt = System.currentTimeMillis(); 8042 String toBSSID = (String)message.obj; 8043 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 8044 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 8045 } 8046 return NOT_HANDLED; 8047 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8048 long lastRoam = 0; 8049 if (mLastDriverRoamAttempt != 0) { 8050 // Calculate time since last driver roam attempt 8051 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 8052 mLastDriverRoamAttempt = 0; 8053 } 8054 config = getCurrentWifiConfiguration(); 8055 if (mScreenOn 8056 && !linkDebouncing 8057 && config != null 8058 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 8059 && !mWifiConfigStore.isLastSelectedConfiguration(config) 8060 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 8061 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 8062 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 8063 && mWifiInfo.getRssi() > 8064 WifiConfiguration.BAD_RSSI_24) 8065 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 8066 && mWifiInfo.getRssi() > 8067 WifiConfiguration.BAD_RSSI_5))) { 8068 // Start de-bouncing the L2 disconnection: 8069 // this L2 disconnection might be spurious. 8070 // Hence we allow 7 seconds for the state machine to try 8071 // to reconnect, go thru the 8072 // roaming cycle and enter Obtaining IP address 8073 // before signalling the disconnect to ConnectivityService and L3 8074 startScanForConfiguration(getCurrentWifiConfiguration(), false); 8075 linkDebouncing = true; 8076 8077 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 8078 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 8079 if (DBG) { 8080 log("NETWORK_DISCONNECTION_EVENT in connected state" 8081 + " BSSID=" + mWifiInfo.getBSSID() 8082 + " RSSI=" + mWifiInfo.getRssi() 8083 + " freq=" + mWifiInfo.getFrequency() 8084 + " reason=" + message.arg2 8085 + " -> debounce"); 8086 } 8087 return HANDLED; 8088 } else { 8089 if (DBG) { 8090 int ajst = -1; 8091 if (config != null) ajst = config.autoJoinStatus; 8092 log("NETWORK_DISCONNECTION_EVENT in connected state" 8093 + " BSSID=" + mWifiInfo.getBSSID() 8094 + " RSSI=" + mWifiInfo.getRssi() 8095 + " freq=" + mWifiInfo.getFrequency() 8096 + " was debouncing=" + linkDebouncing 8097 + " reason=" + message.arg2 8098 + " ajst=" + ajst); 8099 } 8100 } 8101 break; 8102 case CMD_AUTO_ROAM: 8103 // Clear the driver roam indication since we are attempting a framerwork roam 8104 mLastDriverRoamAttempt = 0; 8105 8106 /* Connect command coming from auto-join */ 8107 ScanResult candidate = (ScanResult)message.obj; 8108 String bssid = "any"; 8109 if (candidate != null && candidate.is5GHz()) { 8110 // Only lock BSSID for 5GHz networks 8111 bssid = candidate.BSSID; 8112 } 8113 int netId = mLastNetworkId; 8114 config = getCurrentWifiConfiguration(); 8115 8116 8117 if (config == null) { 8118 loge("AUTO_ROAM and no config, bail out..."); 8119 break; 8120 } 8121 8122 loge("CMD_AUTO_ROAM sup state " 8123 + mSupplicantStateTracker.getSupplicantStateName() 8124 + " my state " + getCurrentState().getName() 8125 + " nid=" + Integer.toString(netId) 8126 + " config " + config.configKey() 8127 + " roam=" + Integer.toString(message.arg2) 8128 + " to " + bssid 8129 + " targetRoamBSSID " + mTargetRoamBSSID); 8130 8131 /* Save the BSSID so as to lock it @ firmware */ 8132 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 8133 loge("AUTO_ROAM nothing to do"); 8134 // Same BSSID, nothing to do 8135 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8136 break; 8137 }; 8138 8139 // Make sure the network is enabled, since supplicant will not reenable it 8140 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 8141 8142 if (deferForUserInput(message, netId, false)) { 8143 break; 8144 } else if (mWifiConfigStore.getWifiConfiguration(netId).userApproved == 8145 WifiConfiguration.USER_BANNED) { 8146 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8147 WifiManager.NOT_AUTHORIZED); 8148 break; 8149 } 8150 8151 boolean ret = false; 8152 if (mLastNetworkId != netId) { 8153 if (mWifiConfigStore.selectNetwork(netId) && 8154 mWifiNative.reconnect()) { 8155 ret = true; 8156 } 8157 } else { 8158 ret = mWifiNative.reassociate(); 8159 } 8160 if (ret) { 8161 lastConnectAttempt = System.currentTimeMillis(); 8162 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 8163 8164 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 8165 mAutoRoaming = message.arg2; 8166 transitionTo(mRoamingState); 8167 8168 } else { 8169 loge("Failed to connect config: " + config + " netId: " + netId); 8170 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 8171 WifiManager.ERROR); 8172 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 8173 break; 8174 } 8175 break; 8176 default: 8177 return NOT_HANDLED; 8178 } 8179 return HANDLED; 8180 } 8181 8182 @Override 8183 public void exit() { 8184 loge("WifiStateMachine: Leaving Connected state"); 8185 setScanAlarm(false); 8186 mLastDriverRoamAttempt = 0; 8187 } 8188 } 8189 8190 class DisconnectingState extends State { 8191 8192 @Override 8193 public void enter() { 8194 8195 if (PDBG) { 8196 loge(" Enter DisconnectingState State scan interval " + mFrameworkScanIntervalMs 8197 + " mEnableBackgroundScan= " + mEnableBackgroundScan 8198 + " screenOn=" + mScreenOn); 8199 } 8200 8201 // Make sure we disconnect: we enter this state prior connecting to a new 8202 // network, waiting for either a DISCONECT event or a SUPPLICANT_STATE_CHANGE 8203 // event which in this case will be indicating that supplicant started to associate. 8204 // In some cases supplicant doesn't ignore the connect requests (it might not 8205 // find the target SSID in its cache), 8206 // Therefore we end up stuck that state, hence the need for the watchdog. 8207 disconnectingWatchdogCount++; 8208 loge("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 8209 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 8210 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 8211 } 8212 8213 @Override 8214 public boolean processMessage(Message message) { 8215 logStateAndMessage(message, getClass().getSimpleName()); 8216 switch (message.what) { 8217 case CMD_SET_OPERATIONAL_MODE: 8218 if (message.arg1 != CONNECT_MODE) { 8219 deferMessage(message); 8220 } 8221 break; 8222 case CMD_START_SCAN: 8223 deferMessage(message); 8224 return HANDLED; 8225 case CMD_DISCONNECTING_WATCHDOG_TIMER: 8226 if (disconnectingWatchdogCount == message.arg1) { 8227 if (DBG) log("disconnecting watchdog! -> disconnect"); 8228 handleNetworkDisconnect(); 8229 transitionTo(mDisconnectedState); 8230 } 8231 break; 8232 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8233 /** 8234 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 8235 * we have missed the network disconnection, transition to mDisconnectedState 8236 * and handle the rest of the events there 8237 */ 8238 deferMessage(message); 8239 handleNetworkDisconnect(); 8240 transitionTo(mDisconnectedState); 8241 break; 8242 default: 8243 return NOT_HANDLED; 8244 } 8245 return HANDLED; 8246 } 8247 } 8248 8249 class DisconnectedState extends State { 8250 @Override 8251 public void enter() { 8252 // We dont scan frequently if this is a temporary disconnect 8253 // due to p2p 8254 if (mTemporarilyDisconnectWifi) { 8255 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 8256 return; 8257 } 8258 8259 mFrameworkScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 8260 Settings.Global.WIFI_FRAMEWORK_SCAN_INTERVAL_MS, 8261 mDefaultFrameworkScanIntervalMs); 8262 8263 if (PDBG) { 8264 loge(" Enter disconnected State scan interval " + mFrameworkScanIntervalMs 8265 + " mEnableBackgroundScan= " + mEnableBackgroundScan 8266 + " screenOn=" + mScreenOn 8267 + " mFrameworkScanIntervalMs=" + mFrameworkScanIntervalMs); 8268 } 8269 8270 /** clear the roaming state, if we were roaming, we failed */ 8271 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 8272 8273 if (mScreenOn) { 8274 /** 8275 * screen lit and => delayed timer 8276 */ 8277 startDelayedScan(mDisconnectedScanPeriodMs, null, null); 8278 } else { 8279 /** 8280 * screen dark and PNO supported => scan alarm disabled 8281 */ 8282 if (mEnableBackgroundScan) { 8283 /* If a regular scan result is pending, do not initiate background 8284 * scan until the scan results are returned. This is needed because 8285 * initiating a background scan will cancel the regular scan and 8286 * scan results will not be returned until background scanning is 8287 * cleared 8288 */ 8289 if (!mIsScanOngoing) { 8290 enableBackgroundScan(true); 8291 } 8292 } else { 8293 setScanAlarm(true); 8294 } 8295 } 8296 8297 /** 8298 * If we have no networks saved, the supplicant stops doing the periodic scan. 8299 * The scans are useful to notify the user of the presence of an open network. 8300 * Note that these are not wake up scans. 8301 */ 8302 if (!mP2pConnected.get() && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8303 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8304 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8305 } 8306 8307 mDisconnectedTimeStamp = System.currentTimeMillis(); 8308 8309 } 8310 @Override 8311 public boolean processMessage(Message message) { 8312 boolean ret = HANDLED; 8313 8314 logStateAndMessage(message, getClass().getSimpleName()); 8315 8316 switch (message.what) { 8317 case CMD_NO_NETWORKS_PERIODIC_SCAN: 8318 if (mP2pConnected.get()) break; 8319 if (message.arg1 == mPeriodicScanToken && 8320 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8321 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 8322 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8323 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8324 } 8325 break; 8326 case WifiManager.FORGET_NETWORK: 8327 case CMD_REMOVE_NETWORK: 8328 case CMD_REMOVE_APP_CONFIGURATIONS: 8329 case CMD_REMOVE_USER_CONFIGURATIONS: 8330 // Set up a delayed message here. After the forget/remove is handled 8331 // the handled delayed message will determine if there is a need to 8332 // scan and continue 8333 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8334 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8335 ret = NOT_HANDLED; 8336 break; 8337 case CMD_SET_OPERATIONAL_MODE: 8338 if (message.arg1 != CONNECT_MODE) { 8339 mOperationalMode = message.arg1; 8340 8341 mWifiConfigStore.disableAllNetworks(); 8342 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 8343 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 8344 setWifiState(WIFI_STATE_DISABLED); 8345 } 8346 transitionTo(mScanModeState); 8347 } 8348 mWifiConfigStore. 8349 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 8350 break; 8351 /* Ignore network disconnect */ 8352 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8353 break; 8354 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8355 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 8356 if (DBG) { 8357 loge("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 8358 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 8359 + " debouncing=" + linkDebouncing); 8360 } 8361 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 8362 /* ConnectModeState does the rest of the handling */ 8363 ret = NOT_HANDLED; 8364 break; 8365 case CMD_START_SCAN: 8366 if (!checkOrDeferScanAllowed(message)) { 8367 // The scan request was rescheduled 8368 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 8369 return HANDLED; 8370 } 8371 /* Disable background scan temporarily during a regular scan */ 8372 if (mEnableBackgroundScan) { 8373 enableBackgroundScan(false); 8374 } 8375 if (message.arg1 == SCAN_ALARM_SOURCE) { 8376 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 8377 // not be processed) and restart the scan 8378 int period = mDisconnectedScanPeriodMs; 8379 if (mP2pConnected.get()) { 8380 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 8381 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8382 mDisconnectedScanPeriodMs); 8383 } 8384 if (!checkAndRestartDelayedScan(message.arg2, 8385 true, period, null, null)) { 8386 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8387 loge("WifiStateMachine Disconnected CMD_START_SCAN source " 8388 + message.arg1 8389 + " " + message.arg2 + ", " + mDelayedScanCounter 8390 + " -> obsolete"); 8391 return HANDLED; 8392 } 8393 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8394 ret = HANDLED; 8395 } else { 8396 ret = NOT_HANDLED; 8397 } 8398 break; 8399 case WifiMonitor.SCAN_RESULTS_EVENT: 8400 /* Re-enable background scan when a pending scan result is received */ 8401 if (mEnableBackgroundScan && mIsScanOngoing) { 8402 enableBackgroundScan(true); 8403 } 8404 /* Handled in parent state */ 8405 ret = NOT_HANDLED; 8406 break; 8407 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 8408 NetworkInfo info = (NetworkInfo) message.obj; 8409 mP2pConnected.set(info.isConnected()); 8410 if (mP2pConnected.get()) { 8411 int defaultInterval = mContext.getResources().getInteger( 8412 R.integer.config_wifi_scan_interval_p2p_connected); 8413 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 8414 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8415 defaultInterval); 8416 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 8417 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8418 if (DBG) log("Turn on scanning after p2p disconnected"); 8419 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8420 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8421 } else { 8422 // If P2P is not connected and there are saved networks, then restart 8423 // scanning at the normal period. This is necessary because scanning might 8424 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 8425 // was set to zero. 8426 startDelayedScan(mDisconnectedScanPeriodMs, null, null); 8427 } 8428 break; 8429 case CMD_RECONNECT: 8430 case CMD_REASSOCIATE: 8431 if (mTemporarilyDisconnectWifi) { 8432 // Drop a third party reconnect/reassociate if STA is 8433 // temporarily disconnected for p2p 8434 break; 8435 } else { 8436 // ConnectModeState handles it 8437 ret = NOT_HANDLED; 8438 } 8439 break; 8440 case CMD_SCREEN_STATE_CHANGED: 8441 handleScreenStateChanged(message.arg1 != 0, 8442 /* startBackgroundScanIfNeeded = */ true); 8443 break; 8444 default: 8445 ret = NOT_HANDLED; 8446 } 8447 return ret; 8448 } 8449 8450 @Override 8451 public void exit() { 8452 /* No need for a background scan upon exit from a disconnected state */ 8453 if (mEnableBackgroundScan) { 8454 enableBackgroundScan(false); 8455 } 8456 setScanAlarm(false); 8457 } 8458 } 8459 8460 class WpsRunningState extends State { 8461 // Tracks the source to provide a reply 8462 private Message mSourceMessage; 8463 @Override 8464 public void enter() { 8465 mSourceMessage = Message.obtain(getCurrentMessage()); 8466 } 8467 @Override 8468 public boolean processMessage(Message message) { 8469 logStateAndMessage(message, getClass().getSimpleName()); 8470 8471 switch (message.what) { 8472 case WifiMonitor.WPS_SUCCESS_EVENT: 8473 // Ignore intermediate success, wait for full connection 8474 break; 8475 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8476 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 8477 mSourceMessage.recycle(); 8478 mSourceMessage = null; 8479 deferMessage(message); 8480 transitionTo(mDisconnectedState); 8481 break; 8482 case WifiMonitor.WPS_OVERLAP_EVENT: 8483 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8484 WifiManager.WPS_OVERLAP_ERROR); 8485 mSourceMessage.recycle(); 8486 mSourceMessage = null; 8487 transitionTo(mDisconnectedState); 8488 break; 8489 case WifiMonitor.WPS_FAIL_EVENT: 8490 // Arg1 has the reason for the failure 8491 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 8492 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 8493 mSourceMessage.recycle(); 8494 mSourceMessage = null; 8495 transitionTo(mDisconnectedState); 8496 } else { 8497 if (DBG) log("Ignore unspecified fail event during WPS connection"); 8498 } 8499 break; 8500 case WifiMonitor.WPS_TIMEOUT_EVENT: 8501 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8502 WifiManager.WPS_TIMED_OUT); 8503 mSourceMessage.recycle(); 8504 mSourceMessage = null; 8505 transitionTo(mDisconnectedState); 8506 break; 8507 case WifiManager.START_WPS: 8508 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 8509 break; 8510 case WifiManager.CANCEL_WPS: 8511 if (mWifiNative.cancelWps()) { 8512 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 8513 } else { 8514 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 8515 } 8516 transitionTo(mDisconnectedState); 8517 break; 8518 /** 8519 * Defer all commands that can cause connections to a different network 8520 * or put the state machine out of connect mode 8521 */ 8522 case CMD_STOP_DRIVER: 8523 case CMD_SET_OPERATIONAL_MODE: 8524 case WifiManager.CONNECT_NETWORK: 8525 case CMD_ENABLE_NETWORK: 8526 case CMD_RECONNECT: 8527 case CMD_REASSOCIATE: 8528 case CMD_ENABLE_ALL_NETWORKS: 8529 deferMessage(message); 8530 break; 8531 case CMD_AUTO_CONNECT: 8532 case CMD_AUTO_ROAM: 8533 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8534 return HANDLED; 8535 case CMD_START_SCAN: 8536 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8537 return HANDLED; 8538 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8539 if (DBG) log("Network connection lost"); 8540 handleNetworkDisconnect(); 8541 break; 8542 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 8543 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 8544 break; 8545 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 8546 // Disregard auth failure events during WPS connection. The 8547 // EAP sequence is retried several times, and there might be 8548 // failures (especially for wps pin). We will get a WPS_XXX 8549 // event at the end of the sequence anyway. 8550 if (DBG) log("Ignore auth failure during WPS connection"); 8551 break; 8552 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8553 // Throw away supplicant state changes when WPS is running. 8554 // We will start getting supplicant state changes once we get 8555 // a WPS success or failure 8556 break; 8557 default: 8558 return NOT_HANDLED; 8559 } 8560 return HANDLED; 8561 } 8562 8563 @Override 8564 public void exit() { 8565 mWifiConfigStore.enableAllNetworks(); 8566 mWifiConfigStore.loadConfiguredNetworks(); 8567 } 8568 } 8569 8570 class SoftApStartingState extends State { 8571 @Override 8572 public void enter() { 8573 final Message message = getCurrentMessage(); 8574 if (message.what == CMD_START_AP) { 8575 final WifiConfiguration config = (WifiConfiguration) message.obj; 8576 8577 if (config == null) { 8578 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 8579 } else { 8580 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 8581 startSoftApWithConfig(config); 8582 } 8583 } else { 8584 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 8585 } 8586 } 8587 @Override 8588 public boolean processMessage(Message message) { 8589 logStateAndMessage(message, getClass().getSimpleName()); 8590 8591 switch(message.what) { 8592 case CMD_START_SUPPLICANT: 8593 case CMD_STOP_SUPPLICANT: 8594 case CMD_START_AP: 8595 case CMD_STOP_AP: 8596 case CMD_START_DRIVER: 8597 case CMD_STOP_DRIVER: 8598 case CMD_SET_OPERATIONAL_MODE: 8599 case CMD_SET_COUNTRY_CODE: 8600 case CMD_SET_FREQUENCY_BAND: 8601 case CMD_START_PACKET_FILTERING: 8602 case CMD_STOP_PACKET_FILTERING: 8603 case CMD_TETHER_STATE_CHANGE: 8604 deferMessage(message); 8605 break; 8606 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 8607 WifiConfiguration config = (WifiConfiguration) message.obj; 8608 if (config != null) { 8609 startSoftApWithConfig(config); 8610 } else { 8611 loge("Softap config is null!"); 8612 sendMessage(CMD_START_AP_FAILURE); 8613 } 8614 break; 8615 case CMD_START_AP_SUCCESS: 8616 setWifiApState(WIFI_AP_STATE_ENABLED); 8617 transitionTo(mSoftApStartedState); 8618 break; 8619 case CMD_START_AP_FAILURE: 8620 setWifiApState(WIFI_AP_STATE_FAILED); 8621 transitionTo(mInitialState); 8622 break; 8623 default: 8624 return NOT_HANDLED; 8625 } 8626 return HANDLED; 8627 } 8628 } 8629 8630 class SoftApStartedState extends State { 8631 @Override 8632 public boolean processMessage(Message message) { 8633 logStateAndMessage(message, getClass().getSimpleName()); 8634 8635 switch(message.what) { 8636 case CMD_STOP_AP: 8637 if (DBG) log("Stopping Soft AP"); 8638 /* We have not tethered at this point, so we just shutdown soft Ap */ 8639 try { 8640 mNwService.stopAccessPoint(mInterfaceName); 8641 } catch(Exception e) { 8642 loge("Exception in stopAccessPoint()"); 8643 } 8644 setWifiApState(WIFI_AP_STATE_DISABLED); 8645 transitionTo(mInitialState); 8646 break; 8647 case CMD_START_AP: 8648 // Ignore a start on a running access point 8649 break; 8650 // Fail client mode operation when soft AP is enabled 8651 case CMD_START_SUPPLICANT: 8652 loge("Cannot start supplicant with a running soft AP"); 8653 setWifiState(WIFI_STATE_UNKNOWN); 8654 break; 8655 case CMD_TETHER_STATE_CHANGE: 8656 TetherStateChange stateChange = (TetherStateChange) message.obj; 8657 if (startTethering(stateChange.available)) { 8658 transitionTo(mTetheringState); 8659 } 8660 break; 8661 default: 8662 return NOT_HANDLED; 8663 } 8664 return HANDLED; 8665 } 8666 } 8667 8668 class TetheringState extends State { 8669 @Override 8670 public void enter() { 8671 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8672 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8673 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8674 } 8675 @Override 8676 public boolean processMessage(Message message) { 8677 logStateAndMessage(message, getClass().getSimpleName()); 8678 8679 switch(message.what) { 8680 case CMD_TETHER_STATE_CHANGE: 8681 TetherStateChange stateChange = (TetherStateChange) message.obj; 8682 if (isWifiTethered(stateChange.active)) { 8683 transitionTo(mTetheredState); 8684 } 8685 return HANDLED; 8686 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8687 if (message.arg1 == mTetherToken) { 8688 loge("Failed to get tether update, shutdown soft access point"); 8689 transitionTo(mSoftApStartedState); 8690 // Needs to be first thing handled 8691 sendMessageAtFrontOfQueue(CMD_STOP_AP); 8692 } 8693 break; 8694 case CMD_START_SUPPLICANT: 8695 case CMD_STOP_SUPPLICANT: 8696 case CMD_START_AP: 8697 case CMD_STOP_AP: 8698 case CMD_START_DRIVER: 8699 case CMD_STOP_DRIVER: 8700 case CMD_SET_OPERATIONAL_MODE: 8701 case CMD_SET_COUNTRY_CODE: 8702 case CMD_SET_FREQUENCY_BAND: 8703 case CMD_START_PACKET_FILTERING: 8704 case CMD_STOP_PACKET_FILTERING: 8705 deferMessage(message); 8706 break; 8707 default: 8708 return NOT_HANDLED; 8709 } 8710 return HANDLED; 8711 } 8712 } 8713 8714 class TetheredState extends State { 8715 @Override 8716 public boolean processMessage(Message message) { 8717 logStateAndMessage(message, getClass().getSimpleName()); 8718 8719 switch(message.what) { 8720 case CMD_TETHER_STATE_CHANGE: 8721 TetherStateChange stateChange = (TetherStateChange) message.obj; 8722 if (!isWifiTethered(stateChange.active)) { 8723 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 8724 setHostApRunning(null, false); 8725 setHostApRunning(null, true); 8726 } 8727 return HANDLED; 8728 case CMD_STOP_AP: 8729 if (DBG) log("Untethering before stopping AP"); 8730 setWifiApState(WIFI_AP_STATE_DISABLING); 8731 stopTethering(); 8732 transitionTo(mUntetheringState); 8733 // More work to do after untethering 8734 deferMessage(message); 8735 break; 8736 default: 8737 return NOT_HANDLED; 8738 } 8739 return HANDLED; 8740 } 8741 } 8742 8743 class UntetheringState extends State { 8744 @Override 8745 public void enter() { 8746 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8747 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8748 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8749 8750 } 8751 @Override 8752 public boolean processMessage(Message message) { 8753 logStateAndMessage(message, getClass().getSimpleName()); 8754 8755 switch(message.what) { 8756 case CMD_TETHER_STATE_CHANGE: 8757 TetherStateChange stateChange = (TetherStateChange) message.obj; 8758 8759 /* Wait till wifi is untethered */ 8760 if (isWifiTethered(stateChange.active)) break; 8761 8762 transitionTo(mSoftApStartedState); 8763 break; 8764 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8765 if (message.arg1 == mTetherToken) { 8766 loge("Failed to get tether update, force stop access point"); 8767 transitionTo(mSoftApStartedState); 8768 } 8769 break; 8770 case CMD_START_SUPPLICANT: 8771 case CMD_STOP_SUPPLICANT: 8772 case CMD_START_AP: 8773 case CMD_STOP_AP: 8774 case CMD_START_DRIVER: 8775 case CMD_STOP_DRIVER: 8776 case CMD_SET_OPERATIONAL_MODE: 8777 case CMD_SET_COUNTRY_CODE: 8778 case CMD_SET_FREQUENCY_BAND: 8779 case CMD_START_PACKET_FILTERING: 8780 case CMD_STOP_PACKET_FILTERING: 8781 deferMessage(message); 8782 break; 8783 default: 8784 return NOT_HANDLED; 8785 } 8786 return HANDLED; 8787 } 8788 } 8789 8790 /** 8791 * State machine initiated requests can have replyTo set to null indicating 8792 * there are no recepients, we ignore those reply actions. 8793 */ 8794 private void replyToMessage(Message msg, int what) { 8795 if (msg.replyTo == null) return; 8796 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 8797 mReplyChannel.replyToMessage(msg, dstMsg); 8798 } 8799 8800 private void replyToMessage(Message msg, int what, int arg1) { 8801 if (msg.replyTo == null) return; 8802 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 8803 dstMsg.arg1 = arg1; 8804 mReplyChannel.replyToMessage(msg, dstMsg); 8805 } 8806 8807 private void replyToMessage(Message msg, int what, Object obj) { 8808 if (msg.replyTo == null) return; 8809 Message dstMsg = obtainMessageWithWhatAndArg2(msg, what); 8810 dstMsg.obj = obj; 8811 mReplyChannel.replyToMessage(msg, dstMsg); 8812 } 8813 8814 /** 8815 * arg2 on the source message has a unique id that needs to be retained in replies 8816 * to match the request 8817 * <p>see WifiManager for details 8818 */ 8819 private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) { 8820 Message msg = Message.obtain(); 8821 msg.what = what; 8822 msg.arg2 = srcMsg.arg2; 8823 return msg; 8824 } 8825 8826 /** 8827 * @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT 8828 * @param msg Must have a WifiConfiguration obj to succeed 8829 */ 8830 private void broadcastWifiCredentialChanged(int wifiCredentialEventType, 8831 WifiConfiguration config) { 8832 if (config != null && config.preSharedKey != null) { 8833 Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION); 8834 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID); 8835 intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE, 8836 wifiCredentialEventType); 8837 mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT, 8838 android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE); 8839 } 8840 } 8841 8842 private static int parseHex(char ch) { 8843 if ('0' <= ch && ch <= '9') { 8844 return ch - '0'; 8845 } else if ('a' <= ch && ch <= 'f') { 8846 return ch - 'a' + 10; 8847 } else if ('A' <= ch && ch <= 'F') { 8848 return ch - 'A' + 10; 8849 } else { 8850 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 8851 } 8852 } 8853 8854 private byte[] parseHex(String hex) { 8855 /* This only works for good input; don't throw bad data at it */ 8856 if (hex == null) { 8857 return new byte[0]; 8858 } 8859 8860 if (hex.length() % 2 != 0) { 8861 throw new NumberFormatException(hex + " is not a valid hex string"); 8862 } 8863 8864 byte[] result = new byte[(hex.length())/2 + 1]; 8865 result[0] = (byte) ((hex.length())/2); 8866 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 8867 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 8868 byte b = (byte) (val & 0xFF); 8869 result[j] = b; 8870 } 8871 8872 return result; 8873 } 8874 8875 private static String makeHex(byte[] bytes) { 8876 StringBuilder sb = new StringBuilder(); 8877 for (byte b : bytes) { 8878 sb.append(String.format("%02x", b)); 8879 } 8880 return sb.toString(); 8881 } 8882 8883 private static String makeHex(byte[] bytes, int from, int len) { 8884 StringBuilder sb = new StringBuilder(); 8885 for (int i = 0; i < len; i++) { 8886 sb.append(String.format("%02x", bytes[from+i])); 8887 } 8888 return sb.toString(); 8889 } 8890 8891 8892 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 8893 8894 int len = array1.length + array2.length + array3.length; 8895 8896 if (array1.length != 0) { 8897 len++; /* add another byte for size */ 8898 } 8899 8900 if (array2.length != 0) { 8901 len++; /* add another byte for size */ 8902 } 8903 8904 if (array3.length != 0) { 8905 len++; /* add another byte for size */ 8906 } 8907 8908 byte[] result = new byte[len]; 8909 8910 int index = 0; 8911 if (array1.length != 0) { 8912 result[index] = (byte) (array1.length & 0xFF); 8913 index++; 8914 for (byte b : array1) { 8915 result[index] = b; 8916 index++; 8917 } 8918 } 8919 8920 if (array2.length != 0) { 8921 result[index] = (byte) (array2.length & 0xFF); 8922 index++; 8923 for (byte b : array2) { 8924 result[index] = b; 8925 index++; 8926 } 8927 } 8928 8929 if (array3.length != 0) { 8930 result[index] = (byte) (array3.length & 0xFF); 8931 index++; 8932 for (byte b : array3) { 8933 result[index] = b; 8934 index++; 8935 } 8936 } 8937 return result; 8938 } 8939 8940 void handleGsmAuthRequest(SimAuthRequestData requestData) { 8941 if (targetWificonfiguration == null 8942 || targetWificonfiguration.networkId == requestData.networkId) { 8943 logd("id matches targetWifiConfiguration"); 8944 } else { 8945 logd("id does not match targetWifiConfiguration"); 8946 return; 8947 } 8948 8949 TelephonyManager tm = (TelephonyManager) 8950 mContext.getSystemService(Context.TELEPHONY_SERVICE); 8951 8952 if (tm != null) { 8953 StringBuilder sb = new StringBuilder(); 8954 for (String challenge : requestData.challenges) { 8955 8956 logd("RAND = " + challenge); 8957 8958 byte[] rand = null; 8959 try { 8960 rand = parseHex(challenge); 8961 } catch (NumberFormatException e) { 8962 loge("malformed challenge"); 8963 continue; 8964 } 8965 8966 String base64Challenge = android.util.Base64.encodeToString( 8967 rand, android.util.Base64.NO_WRAP); 8968 /* 8969 * appType = 1 => SIM, 2 => USIM according to 8970 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 8971 */ 8972 int appType = 2; 8973 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 8974 logv("Raw Response - " + tmResponse); 8975 8976 if (tmResponse != null && tmResponse.length() > 4) { 8977 byte[] result = android.util.Base64.decode(tmResponse, 8978 android.util.Base64.DEFAULT); 8979 logv("Hex Response -" + makeHex(result)); 8980 int sres_len = result[0]; 8981 String sres = makeHex(result, 1, sres_len); 8982 int kc_offset = 1+sres_len; 8983 int kc_len = result[kc_offset]; 8984 String kc = makeHex(result, 1+kc_offset, kc_len); 8985 sb.append(":" + kc + ":" + sres); 8986 logv("kc:" + kc + " sres:" + sres); 8987 } else { 8988 loge("bad response - " + tmResponse); 8989 } 8990 } 8991 8992 String response = sb.toString(); 8993 logv("Supplicant Response -" + response); 8994 mWifiNative.simAuthResponse(requestData.networkId, response); 8995 } else { 8996 loge("could not get telephony manager"); 8997 } 8998 } 8999 9000 void handle3GAuthRequest(SimAuthRequestData requestData) { 9001 9002 } 9003} 9004