1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.wifi; 18 19import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLED; 20import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLING; 21import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLED; 22import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLING; 23import static android.net.wifi.WifiManager.WIFI_AP_STATE_FAILED; 24import static android.net.wifi.WifiManager.WIFI_STATE_DISABLED; 25import static android.net.wifi.WifiManager.WIFI_STATE_DISABLING; 26import static android.net.wifi.WifiManager.WIFI_STATE_ENABLED; 27import static android.net.wifi.WifiManager.WIFI_STATE_ENABLING; 28/** 29 * TODO: 30 * Deprecate WIFI_STATE_UNKNOWN 31 */ 32import static android.net.wifi.WifiManager.WIFI_STATE_UNKNOWN; 33 34import android.app.ActivityManager; 35import android.app.AlarmManager; 36import android.app.PendingIntent; 37import android.app.backup.IBackupManager; 38import android.bluetooth.BluetoothAdapter; 39import android.content.BroadcastReceiver; 40import android.content.Context; 41import android.content.Intent; 42import android.content.IntentFilter; 43import android.content.pm.PackageManager; 44import android.database.ContentObserver; 45import android.net.ConnectivityManager; 46import android.net.DhcpResults; 47import android.net.DhcpStateMachine; 48import android.net.InterfaceConfiguration; 49import android.net.LinkAddress; 50import android.net.LinkProperties; 51import android.net.NetworkAgent; 52import android.net.NetworkCapabilities; 53import android.net.NetworkFactory; 54import android.net.NetworkInfo; 55import android.net.NetworkInfo.DetailedState; 56import android.net.NetworkRequest; 57import android.net.NetworkUtils; 58import android.net.RouteInfo; 59import android.net.StaticIpConfiguration; 60import android.net.TrafficStats; 61import android.net.wifi.BatchedScanResult; 62import android.net.wifi.BatchedScanSettings; 63import android.net.wifi.RssiPacketCountInfo; 64import android.net.wifi.ScanResult; 65import android.net.wifi.ScanSettings; 66import android.net.wifi.SupplicantState; 67import android.net.wifi.WifiChannel; 68import android.net.wifi.WifiConfiguration; 69import android.net.wifi.WifiConnectionStatistics; 70import android.net.wifi.WifiEnterpriseConfig; 71import android.net.wifi.WifiInfo; 72import android.net.wifi.WifiLinkLayerStats; 73import android.net.wifi.WifiManager; 74import android.net.wifi.WifiSsid; 75import android.net.wifi.WpsInfo; 76import android.net.wifi.WpsResult; 77import android.net.wifi.WpsResult.Status; 78import android.net.wifi.p2p.IWifiP2pManager; 79import android.os.BatteryStats; 80import android.os.Bundle; 81import android.os.IBinder; 82import android.os.INetworkManagementService; 83import android.os.Looper; 84import android.os.Message; 85import android.os.Messenger; 86import android.os.PowerManager; 87import android.os.Process; 88import android.os.RemoteException; 89import android.os.ServiceManager; 90import android.os.SystemClock; 91import android.os.SystemProperties; 92import android.os.UserHandle; 93import android.os.WorkSource; 94import android.provider.Settings; 95import android.telephony.TelephonyManager; 96import android.text.TextUtils; 97import android.util.Log; 98import android.util.LruCache; 99 100import com.android.internal.R; 101import com.android.internal.app.IBatteryStats; 102import com.android.internal.util.AsyncChannel; 103import com.android.internal.util.Protocol; 104import com.android.internal.util.State; 105import com.android.internal.util.StateMachine; 106import com.android.server.net.NetlinkTracker; 107import com.android.server.wifi.p2p.WifiP2pServiceImpl; 108 109import java.io.BufferedReader; 110import java.io.FileDescriptor; 111import java.io.FileNotFoundException; 112import java.io.FileReader; 113import java.io.IOException; 114import java.io.PrintWriter; 115import java.net.Inet4Address; 116import java.net.InetAddress; 117import java.util.ArrayList; 118import java.util.HashSet; 119import java.util.LinkedList; 120import java.util.List; 121import java.util.Locale; 122import java.util.Queue; 123import java.util.concurrent.atomic.AtomicBoolean; 124import java.util.concurrent.atomic.AtomicInteger; 125import java.util.regex.Matcher; 126import java.util.regex.Pattern; 127 128/** 129 * Track the state of Wifi connectivity. All event handling is done here, 130 * and all changes in connectivity state are initiated here. 131 * 132 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 133 * In the current implementation, we support concurrent wifi p2p and wifi operation. 134 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 135 * handles p2p operation. 136 * 137 * @hide 138 */ 139public class WifiStateMachine extends StateMachine { 140 141 private static final String NETWORKTYPE = "WIFI"; 142 private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT"; 143 private static boolean DBG = false; 144 private static boolean VDBG = false; 145 private static boolean VVDBG = false; 146 private static boolean mLogMessages = false; 147 148 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 149 150 private static final String GOOGLE_OUI = "DA-A1-19"; 151 152 /* temporary debug flag - best network selection development */ 153 private static boolean PDBG = false; 154 155 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 156 * the corresponding BSSID. 157 */ 158 private boolean didBlackListBSSID = false; 159 160 /** 161 * Log with error attribute 162 * 163 * @param s is string log 164 */ 165 protected void loge(String s) { 166 Log.e(getName(), s); 167 } 168 protected void log(String s) {; 169 Log.e(getName(), s); 170 } 171 172 private WifiMonitor mWifiMonitor; 173 private WifiNative mWifiNative; 174 private WifiConfigStore mWifiConfigStore; 175 private WifiAutoJoinController mWifiAutoJoinController; 176 private INetworkManagementService mNwService; 177 private ConnectivityManager mCm; 178 179 private final boolean mP2pSupported; 180 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 181 private boolean mTemporarilyDisconnectWifi = false; 182 private final String mPrimaryDeviceType; 183 184 /* Scan results handling */ 185 private List<ScanResult> mScanResults = new ArrayList<ScanResult>(); 186 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 187 private static final int SCAN_RESULT_CACHE_SIZE = 160; 188 private final LruCache<String, ScanResult> mScanResultCache; 189 // For debug, number of known scan results that were found as part of last scan result event, 190 // as well the number of scans results returned by the supplicant with that message 191 private int mNumScanResultsKnown; 192 private int mNumScanResultsReturned; 193 194 /* Batch scan results */ 195 private final List<BatchedScanResult> mBatchedScanResults = 196 new ArrayList<BatchedScanResult>(); 197 private int mBatchedScanOwnerUid = UNKNOWN_SCAN_SOURCE; 198 private int mExpectedBatchedScans = 0; 199 private long mBatchedScanMinPollTime = 0; 200 201 private boolean mScreenOn = false; 202 203 /* Chipset supports background scan */ 204 private final boolean mBackgroundScanSupported; 205 206 private String mInterfaceName; 207 /* Tethering interface could be separate from wlan interface */ 208 private String mTetherInterfaceName; 209 210 private int mLastSignalLevel = -1; 211 private String mLastBssid; 212 private int mLastNetworkId; // The network Id we successfully joined 213 private boolean linkDebouncing = false; 214 215 // Testing various network disconnect cases by sending lots of spurious 216 // disconnect to supplicant 217 private boolean testNetworkDisconnect = false; 218 219 private boolean mEnableRssiPolling = false; 220 private boolean mEnableBackgroundScan = false; 221 private int mRssiPollToken = 0; 222 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 223 * In CONNECT_MODE, the STA can scan and connect to an access point 224 * In SCAN_ONLY_MODE, the STA can only scan for access points 225 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 226 */ 227 private int mOperationalMode = CONNECT_MODE; 228 private boolean mIsScanOngoing = false; 229 private boolean mIsFullScanOngoing = false; 230 private boolean mSendScanResultsBroadcast = false; 231 232 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 233 private WorkSource mScanWorkSource = null; 234 private static final int UNKNOWN_SCAN_SOURCE = -1; 235 private static final int SCAN_ALARM_SOURCE = -2; 236 private static final int ADD_OR_UPDATE_SOURCE = -3; 237 private static final int SET_ALLOW_UNTRUSTED_SOURCE = -4; 238 private static final int ENABLE_WIFI = -5; 239 public static final int DFS_RESTRICTED_SCAN_REQUEST = -6; 240 241 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 242 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 243 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 244 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 245 246 private static final String BATCHED_SETTING = "batched_settings"; 247 private static final String BATCHED_WORKSOURCE = "batched_worksource"; 248 249 /* Tracks if state machine has received any screen state change broadcast yet. 250 * We can miss one of these at boot. 251 */ 252 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 253 254 private boolean mBluetoothConnectionActive = false; 255 256 private PowerManager.WakeLock mSuspendWakeLock; 257 258 /** 259 * Interval in milliseconds between polling for RSSI 260 * and linkspeed information 261 */ 262 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 263 264 /** 265 * Interval in milliseconds between receiving a disconnect event 266 * while connected to a good AP, and handling the disconnect proper 267 */ 268 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 269 270 /** 271 * Delay between supplicant restarts upon failure to establish connection 272 */ 273 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 274 275 /** 276 * Number of times we attempt to restart supplicant 277 */ 278 private static final int SUPPLICANT_RESTART_TRIES = 5; 279 280 private int mSupplicantRestartCount = 0; 281 /* Tracks sequence number on stop failure message */ 282 private int mSupplicantStopFailureToken = 0; 283 284 /** 285 * Tether state change notification time out 286 */ 287 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 288 289 /* Tracks sequence number on a tether notification time out */ 290 private int mTetherToken = 0; 291 292 /** 293 * Driver start time out. 294 */ 295 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 296 297 /* Tracks sequence number on a driver time out */ 298 private int mDriverStartToken = 0; 299 300 /** 301 * The link properties of the wifi interface. 302 * Do not modify this directly; use updateLinkProperties instead. 303 */ 304 private LinkProperties mLinkProperties; 305 306 /* Tracks sequence number on a periodic scan message */ 307 private int mPeriodicScanToken = 0; 308 309 // Wakelock held during wifi start/stop and driver load/unload 310 private PowerManager.WakeLock mWakeLock; 311 312 private Context mContext; 313 314 private final Object mDhcpResultsLock = new Object(); 315 private DhcpResults mDhcpResults; 316 private WifiInfo mWifiInfo; 317 private NetworkInfo mNetworkInfo; 318 private NetworkCapabilities mNetworkCapabilities; 319 private SupplicantStateTracker mSupplicantStateTracker; 320 private DhcpStateMachine mDhcpStateMachine; 321 private boolean mDhcpActive = false; 322 323 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 324 325 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 326 327 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 328 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 329 330 // Roaming failure count 331 private int mRoamFailCount = 0; 332 333 // This is the BSSID we are trying to associate to, it can be set to "any" 334 // if we havent selected a BSSID for joining. 335 // if we havent selected a BSSID for joining. 336 // The BSSID we are associated to is found in mWifiInfo 337 private String mTargetRoamBSSID = "any"; 338 339 private long mLastDriverRoamAttempt = 0; 340 341 private WifiConfiguration targetWificonfiguration = null; 342 343 // Used as debug to indicate which configuration last was saved 344 private WifiConfiguration lastSavedConfigurationAttempt = null; 345 346 // Used as debug to indicate which configuration last was removed 347 private WifiConfiguration lastForgetConfigurationAttempt = null; 348 349 boolean isRoaming() { 350 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 351 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 352 } 353 354 public void autoRoamSetBSSID(int netId, String bssid) { 355 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 356 } 357 358 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 359 boolean ret = true; 360 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 361 if (bssid == null) bssid = "any"; 362 if (config == null) return false; // Nothing to do 363 364 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 365 return false; // We didnt change anything 366 } 367 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 368 // Changing to ANY 369 if (!mWifiConfigStore.roamOnAny) { 370 ret = false; // Nothing to do 371 } 372 } 373 if (VDBG) { 374 loge("autoRoamSetBSSID " + bssid 375 + " key=" + config.configKey()); 376 } 377 config.autoJoinBSSID = bssid; 378 mTargetRoamBSSID = bssid; 379 mWifiConfigStore.saveWifiConfigBSSID(config); 380 return ret; 381 } 382 383 /** 384 * Subset of link properties coming from netlink. 385 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 386 * and domains obtained from router advertisements (RFC 6106). 387 */ 388 private NetlinkTracker mNetlinkTracker; 389 390 private AlarmManager mAlarmManager; 391 private PendingIntent mScanIntent; 392 private PendingIntent mDriverStopIntent; 393 private PendingIntent mBatchedScanIntervalIntent; 394 395 /* Tracks current frequency mode */ 396 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 397 398 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 399 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 400 401 // Channel for sending replies. 402 private AsyncChannel mReplyChannel = new AsyncChannel(); 403 404 private WifiP2pServiceImpl mWifiP2pServiceImpl; 405 406 // Used to initiate a connection with WifiP2pService 407 private AsyncChannel mWifiP2pChannel; 408 private AsyncChannel mWifiApConfigChannel; 409 410 private int mConnectionRequests = 0; 411 private WifiNetworkFactory mNetworkFactory; 412 private UntrustedWifiNetworkFactory mUntrustedNetworkFactory; 413 private WifiNetworkAgent mNetworkAgent; 414 415 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 416 // We should really persist that into the networkHistory.txt file, and read it back when 417 // WifiStateMachine starts up 418 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 419 420 // Used to filter out requests we couldn't possibly satisfy. 421 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 422 423 /* The base for wifi message types */ 424 static final int BASE = Protocol.BASE_WIFI; 425 /* Start the supplicant */ 426 static final int CMD_START_SUPPLICANT = BASE + 11; 427 /* Stop the supplicant */ 428 static final int CMD_STOP_SUPPLICANT = BASE + 12; 429 /* Start the driver */ 430 static final int CMD_START_DRIVER = BASE + 13; 431 /* Stop the driver */ 432 static final int CMD_STOP_DRIVER = BASE + 14; 433 /* Indicates Static IP succeeded */ 434 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 435 /* Indicates Static IP failed */ 436 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 437 /* Indicates supplicant stop failed */ 438 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 439 /* Delayed stop to avoid shutting down driver too quick*/ 440 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 441 /* A delayed message sent to start driver when it fail to come up */ 442 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 443 444 /* Start the soft access point */ 445 static final int CMD_START_AP = BASE + 21; 446 /* Indicates soft ap start succeeded */ 447 static final int CMD_START_AP_SUCCESS = BASE + 22; 448 /* Indicates soft ap start failed */ 449 static final int CMD_START_AP_FAILURE = BASE + 23; 450 /* Stop the soft access point */ 451 static final int CMD_STOP_AP = BASE + 24; 452 /* Set the soft access point configuration */ 453 static final int CMD_SET_AP_CONFIG = BASE + 25; 454 /* Soft access point configuration set completed */ 455 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 456 /* Request the soft access point configuration */ 457 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 458 /* Response to access point configuration request */ 459 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 460 /* Invoked when getting a tether state change notification */ 461 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 462 /* A delayed message sent to indicate tether state change failed to arrive */ 463 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 464 465 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 466 467 /* Supplicant commands */ 468 /* Is supplicant alive ? */ 469 static final int CMD_PING_SUPPLICANT = BASE + 51; 470 /* Add/update a network configuration */ 471 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 472 /* Delete a network */ 473 static final int CMD_REMOVE_NETWORK = BASE + 53; 474 /* Enable a network. The device will attempt a connection to the given network. */ 475 static final int CMD_ENABLE_NETWORK = BASE + 54; 476 /* Enable all networks */ 477 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 478 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 479 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 480 /* Clear the blacklist network list */ 481 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 482 /* Save configuration */ 483 static final int CMD_SAVE_CONFIG = BASE + 58; 484 /* Get configured networks */ 485 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 486 /* Get available frequencies */ 487 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 488 /* Get adaptors */ 489 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 490 /* Get configured networks with real preSharedKey */ 491 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 492 /* Get Link Layer Stats thru HAL */ 493 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 494 /* Supplicant commands after driver start*/ 495 /* Initiate a scan */ 496 static final int CMD_START_SCAN = BASE + 71; 497 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 498 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 499 /* Disconnect from a network */ 500 static final int CMD_DISCONNECT = BASE + 73; 501 /* Reconnect to a network */ 502 static final int CMD_RECONNECT = BASE + 74; 503 /* Reassociate to a network */ 504 static final int CMD_REASSOCIATE = BASE + 75; 505 /* Get Connection Statistis */ 506 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 507 508 /* Controls suspend mode optimizations 509 * 510 * When high perf mode is enabled, suspend mode optimizations are disabled 511 * 512 * When high perf mode is disabled, suspend mode optimizations are enabled 513 * 514 * Suspend mode optimizations include: 515 * - packet filtering 516 * - turn off roaming 517 * - DTIM wake up settings 518 */ 519 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 520 /* Set the country code */ 521 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 522 /* Enables RSSI poll */ 523 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 524 /* RSSI poll */ 525 static final int CMD_RSSI_POLL = BASE + 83; 526 /* Set up packet filtering */ 527 static final int CMD_START_PACKET_FILTERING = BASE + 84; 528 /* Clear packet filter */ 529 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 530 /* Enable suspend mode optimizations in the driver */ 531 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 532 /* Delayed NETWORK_DISCONNECT */ 533 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 534 /* When there are no saved networks, we do a periodic scan to notify user of 535 * an open network */ 536 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 537 /* Test network Disconnection NETWORK_DISCONNECT */ 538 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 539 private int testNetworkDisconnectCounter = 0; 540 541 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 542 static final int MULTICAST_V6 = 1; 543 static final int MULTICAST_V4 = 0; 544 545 /* Set the frequency band */ 546 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 547 /* Enable TDLS on a specific MAC address */ 548 static final int CMD_ENABLE_TDLS = BASE + 92; 549 /* DHCP/IP configuration watchdog */ 550 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 551 552 /** 553 * Make this timer 40 seconds, which is about the normal DHCP timeout. 554 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 555 * for more than 30 seconds. 556 */ 557 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 558 559 int obtainingIpWatchdogCount = 0; 560 561 /* Commands from/to the SupplicantStateTracker */ 562 /* Reset the supplicant state tracker */ 563 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 564 565 566 /** 567 * Watchdog for protecting against b/16823537 568 * Leave time for 4-ways handshake to succeed 569 */ 570 static final int ROAM_GUARD_TIMER_MSEC = 15000; 571 572 int roamWatchdogCount = 0; 573 /* Roam state watchdog */ 574 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 575 /* Screen change intent handling */ 576 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 577 578 int disconnectingWatchdogCount = 0; 579 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 580 581 /* Disconnecting state watchdog */ 582 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 583 584 /* Disable an ephemeral network */ 585 static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98; 586 587 /* P2p commands */ 588 /* We are ok with no response here since we wont do much with it anyway */ 589 public static final int CMD_ENABLE_P2P = BASE + 131; 590 /* In order to shut down supplicant cleanly, we wait till p2p has 591 * been disabled */ 592 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 593 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 594 595 public static final int CMD_BOOT_COMPLETED = BASE + 134; 596 597 /* change the batch scan settings. 598 * arg1 = responsible UID 599 * arg2 = csph (channel scans per hour) 600 * obj = bundle with the new settings and the optional worksource 601 */ 602 public static final int CMD_SET_BATCHED_SCAN = BASE + 135; 603 public static final int CMD_START_NEXT_BATCHED_SCAN = BASE + 136; 604 public static final int CMD_POLL_BATCHED_SCAN = BASE + 137; 605 606 /* We now have a valid IP configuration. */ 607 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 608 /* We no longer have a valid IP configuration. */ 609 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 610 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 611 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 612 613 /* Supplicant is trying to associate to a given BSSID */ 614 static final int CMD_TARGET_BSSID = BASE + 141; 615 616 /* Reload all networks and reconnect */ 617 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 618 619 static final int CMD_AUTO_CONNECT = BASE + 143; 620 621 static final int network_status_unwanted_disconnect = 0; 622 static final int network_status_unwanted_disable_autojoin = 1; 623 624 static final int CMD_UNWANTED_NETWORK = BASE + 144; 625 626 static final int CMD_AUTO_ROAM = BASE + 145; 627 628 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 629 630 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 631 632 static final int CMD_NETWORK_STATUS = BASE + 148; 633 634 /* Wifi state machine modes of operation */ 635 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 636 public static final int CONNECT_MODE = 1; 637 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 638 public static final int SCAN_ONLY_MODE = 2; 639 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 640 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 641 642 private static final int SUCCESS = 1; 643 private static final int FAILURE = -1; 644 645 /* Tracks if suspend optimizations need to be disabled by DHCP, 646 * screen or due to high perf mode. 647 * When any of them needs to disable it, we keep the suspend optimizations 648 * disabled 649 */ 650 private int mSuspendOptNeedsDisabled = 0; 651 652 private static final int SUSPEND_DUE_TO_DHCP = 1; 653 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1<<1; 654 private static final int SUSPEND_DUE_TO_SCREEN = 1<<2; 655 656 /* Tracks if user has enabled suspend optimizations through settings */ 657 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 658 659 /** 660 * Default framework scan interval in milliseconds. This is used in the scenario in which 661 * wifi chipset does not support background scanning to set up a 662 * periodic wake up scan so that the device can connect to a new access 663 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 664 * override this. 665 */ 666 private final int mDefaultFrameworkScanIntervalMs; 667 668 private int mDisconnectedScanPeriodMs = 10000; 669 670 /** 671 * Supplicant scan interval in milliseconds. 672 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 673 * from the default config if the setting is not set 674 */ 675 private long mSupplicantScanIntervalMs; 676 677 /** 678 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 679 */ 680 private long lastFullBandConnectedTimeMilli; 681 682 /** 683 * time interval to the next full band scan we will perform for 684 * autojoin while connected with screen lit 685 */ 686 private long fullBandConnectedTimeIntervalMilli; 687 688 /** 689 * max time interval to the next full band scan we will perform for 690 * autojoin while connected with screen lit 691 * Max time is 5 minutes 692 */ 693 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 694 695 /** 696 * Minimum time interval between enabling all networks. 697 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 698 * due to enabling every time. We add a threshold to avoid this. 699 */ 700 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 701 private long mLastEnableAllNetworksTime; 702 703 int mRunningBeaconCount = 0; 704 705 /** 706 * Starting and shutting down driver too quick causes problems leading to driver 707 * being in a bad state. Delay driver stop. 708 */ 709 private final int mDriverStopDelayMs; 710 private int mDelayedStopCounter; 711 private boolean mInDelayedStop = false; 712 713 // sometimes telephony gives us this data before boot is complete and we can't store it 714 // until after, so the write is deferred 715 private volatile String mPersistedCountryCode; 716 717 // Supplicant doesn't like setting the same country code multiple times (it may drop 718 // currently connected network), so we save the country code here to avoid redundency 719 private String mLastSetCountryCode; 720 721 /* Default parent state */ 722 private State mDefaultState = new DefaultState(); 723 /* Temporary initial state */ 724 private State mInitialState = new InitialState(); 725 /* Driver loaded, waiting for supplicant to start */ 726 private State mSupplicantStartingState = new SupplicantStartingState(); 727 /* Driver loaded and supplicant ready */ 728 private State mSupplicantStartedState = new SupplicantStartedState(); 729 /* Waiting for supplicant to stop and monitor to exit */ 730 private State mSupplicantStoppingState = new SupplicantStoppingState(); 731 /* Driver start issued, waiting for completed event */ 732 private State mDriverStartingState = new DriverStartingState(); 733 /* Driver started */ 734 private State mDriverStartedState = new DriverStartedState(); 735 /* Wait until p2p is disabled 736 * This is a special state which is entered right after we exit out of DriverStartedState 737 * before transitioning to another state. 738 */ 739 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 740 /* Driver stopping */ 741 private State mDriverStoppingState = new DriverStoppingState(); 742 /* Driver stopped */ 743 private State mDriverStoppedState = new DriverStoppedState(); 744 /* Scan for networks, no connection will be established */ 745 private State mScanModeState = new ScanModeState(); 746 /* Connecting to an access point */ 747 private State mConnectModeState = new ConnectModeState(); 748 /* Connected at 802.11 (L2) level */ 749 private State mL2ConnectedState = new L2ConnectedState(); 750 /* fetching IP after connection to access point (assoc+auth complete) */ 751 private State mObtainingIpState = new ObtainingIpState(); 752 /* Waiting for link quality verification to be complete */ 753 private State mVerifyingLinkState = new VerifyingLinkState(); 754 /* Connected with IP addr */ 755 private State mConnectedState = new ConnectedState(); 756 /* Roaming */ 757 private State mRoamingState = new RoamingState(); 758 /* disconnect issued, waiting for network disconnect confirmation */ 759 private State mDisconnectingState = new DisconnectingState(); 760 /* Network is not connected, supplicant assoc+auth is not complete */ 761 private State mDisconnectedState = new DisconnectedState(); 762 /* Waiting for WPS to be completed*/ 763 private State mWpsRunningState = new WpsRunningState(); 764 765 /* Soft ap is starting up */ 766 private State mSoftApStartingState = new SoftApStartingState(); 767 /* Soft ap is running */ 768 private State mSoftApStartedState = new SoftApStartedState(); 769 /* Soft ap is running and we are waiting for tether notification */ 770 private State mTetheringState = new TetheringState(); 771 /* Soft ap is running and we are tethered through connectivity service */ 772 private State mTetheredState = new TetheredState(); 773 /* Waiting for untether confirmation before stopping soft Ap */ 774 private State mUntetheringState = new UntetheringState(); 775 776 private class TetherStateChange { 777 ArrayList<String> available; 778 ArrayList<String> active; 779 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 780 available = av; 781 active = ac; 782 } 783 } 784 785 public static class SimAuthRequestData { 786 int networkId; 787 int protocol; 788 String ssid; 789 String[] challenges; 790 } 791 792 public static class SimAuthResponseData { 793 int id; 794 String Kc1; 795 String SRES1; 796 String Kc2; 797 String SRES2; 798 String Kc3; 799 String SRES3; 800 } 801 802 /** 803 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 804 * {@link WifiManager#WIFI_STATE_DISABLING}, 805 * {@link WifiManager#WIFI_STATE_ENABLED}, 806 * {@link WifiManager#WIFI_STATE_ENABLING}, 807 * {@link WifiManager#WIFI_STATE_UNKNOWN} 808 * 809 */ 810 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 811 812 /** 813 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 814 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 815 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 816 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 817 * {@link WifiManager#WIFI_AP_STATE_FAILED} 818 * 819 */ 820 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 821 822 private static final int SCAN_REQUEST = 0; 823 private static final String ACTION_START_SCAN = 824 "com.android.server.WifiManager.action.START_SCAN"; 825 826 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 827 private static final int DRIVER_STOP_REQUEST = 0; 828 private static final String ACTION_DELAYED_DRIVER_STOP = 829 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 830 831 private static final String ACTION_REFRESH_BATCHED_SCAN = 832 "com.android.server.WifiManager.action.REFRESH_BATCHED_SCAN"; 833 /** 834 * Keep track of whether WIFI is running. 835 */ 836 private boolean mIsRunning = false; 837 838 /** 839 * Keep track of whether we last told the battery stats we had started. 840 */ 841 private boolean mReportedRunning = false; 842 843 /** 844 * Most recently set source of starting WIFI. 845 */ 846 private final WorkSource mRunningWifiUids = new WorkSource(); 847 848 /** 849 * The last reported UIDs that were responsible for starting WIFI. 850 */ 851 private final WorkSource mLastRunningWifiUids = new WorkSource(); 852 853 private final IBatteryStats mBatteryStats; 854 855 private BatchedScanSettings mBatchedScanSettings = null; 856 857 /** 858 * Track the worksource/cost of the current settings and track what's been noted 859 * to the battery stats, so we can mark the end of the previous when changing. 860 */ 861 private WorkSource mBatchedScanWorkSource = null; 862 private int mBatchedScanCsph = 0; 863 private WorkSource mNotedBatchedScanWorkSource = null; 864 private int mNotedBatchedScanCsph = 0; 865 866 private String mTcpBufferSizes = null; 867 868 // Used for debug and stats gathering 869 private static int sScanAlarmIntentCount = 0; 870 871 final static int frameworkMinScanIntervalSaneValue = 10000; 872 873 public WifiStateMachine(Context context, String wlanInterface, 874 WifiTrafficPoller trafficPoller){ 875 super("WifiStateMachine"); 876 mContext = context; 877 mInterfaceName = wlanInterface; 878 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 879 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 880 BatteryStats.SERVICE_NAME)); 881 882 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 883 mNwService = INetworkManagementService.Stub.asInterface(b); 884 885 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 886 PackageManager.FEATURE_WIFI_DIRECT); 887 888 mWifiNative = new WifiNative(mInterfaceName); 889 mWifiConfigStore = new WifiConfigStore(context, mWifiNative); 890 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 891 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 892 mWifiMonitor = new WifiMonitor(this, mWifiNative); 893 mWifiInfo = new WifiInfo(); 894 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 895 getHandler()); 896 mLinkProperties = new LinkProperties(); 897 898 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 899 mWifiP2pServiceImpl = (WifiP2pServiceImpl)IWifiP2pManager.Stub.asInterface(s1); 900 901 mNetworkInfo.setIsAvailable(false); 902 mLastBssid = null; 903 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 904 mLastSignalLevel = -1; 905 906 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 907 public void update() { 908 sendMessage(CMD_UPDATE_LINKPROPERTIES); 909 } 910 }); 911 try { 912 mNwService.registerObserver(mNetlinkTracker); 913 } catch (RemoteException e) { 914 loge("Couldn't register netlink tracker: " + e.toString()); 915 } 916 917 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 918 mScanIntent = getPrivateBroadcast(ACTION_START_SCAN, SCAN_REQUEST); 919 mBatchedScanIntervalIntent = getPrivateBroadcast(ACTION_REFRESH_BATCHED_SCAN, 0); 920 921 // Make sure the interval is not configured less than 10 seconds 922 int period = mContext.getResources().getInteger( 923 R.integer.config_wifi_framework_scan_interval); 924 if (period < frameworkMinScanIntervalSaneValue) { 925 period = frameworkMinScanIntervalSaneValue; 926 } 927 mDefaultFrameworkScanIntervalMs = period; 928 mDriverStopDelayMs = mContext.getResources().getInteger( 929 R.integer.config_wifi_driver_stop_delay); 930 931 mBackgroundScanSupported = mContext.getResources().getBoolean( 932 R.bool.config_wifi_background_scan_support); 933 934 mPrimaryDeviceType = mContext.getResources().getString( 935 R.string.config_wifi_p2p_device_type); 936 937 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 938 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 939 940 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 941 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 942 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 943 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 944 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 945 // TODO - needs to be a bit more dynamic 946 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 947 948 mContext.registerReceiver( 949 new BroadcastReceiver() { 950 @Override 951 public void onReceive(Context context, Intent intent) { 952 ArrayList<String> available = intent.getStringArrayListExtra( 953 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 954 ArrayList<String> active = intent.getStringArrayListExtra( 955 ConnectivityManager.EXTRA_ACTIVE_TETHER); 956 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 957 } 958 },new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 959 960 mContext.registerReceiver( 961 new BroadcastReceiver() { 962 @Override 963 public void onReceive(Context context, Intent intent) { 964 sScanAlarmIntentCount++; // Used for debug only 965 startScan(SCAN_ALARM_SOURCE, mDelayedScanCounter.incrementAndGet(), null, null); 966 if (VDBG) 967 loge("WiFiStateMachine SCAN ALARM -> " + mDelayedScanCounter.get()); 968 } 969 }, 970 new IntentFilter(ACTION_START_SCAN)); 971 972 IntentFilter filter = new IntentFilter(); 973 filter.addAction(Intent.ACTION_SCREEN_ON); 974 filter.addAction(Intent.ACTION_SCREEN_OFF); 975 filter.addAction(ACTION_REFRESH_BATCHED_SCAN); 976 mContext.registerReceiver( 977 new BroadcastReceiver() { 978 @Override 979 public void onReceive(Context context, Intent intent) { 980 String action = intent.getAction(); 981 982 if (action.equals(Intent.ACTION_SCREEN_ON)) { 983 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 984 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 985 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 986 } else if (action.equals(ACTION_REFRESH_BATCHED_SCAN)) { 987 startNextBatchedScanAsync(); 988 } 989 } 990 }, filter); 991 992 mContext.registerReceiver( 993 new BroadcastReceiver() { 994 @Override 995 public void onReceive(Context context, Intent intent) { 996 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 997 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 998 } 999 }, 1000 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 1001 1002 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 1003 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 1004 new ContentObserver(getHandler()) { 1005 @Override 1006 public void onChange(boolean selfChange) { 1007 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 1008 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 1009 } 1010 }); 1011 1012 mContext.registerReceiver( 1013 new BroadcastReceiver() { 1014 @Override 1015 public void onReceive(Context context, Intent intent) { 1016 sendMessage(CMD_BOOT_COMPLETED); 1017 } 1018 }, 1019 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 1020 1021 mScanResultCache = new LruCache<String, ScanResult>(SCAN_RESULT_CACHE_SIZE); 1022 1023 PowerManager powerManager = (PowerManager)mContext.getSystemService(Context.POWER_SERVICE); 1024 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 1025 1026 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 1027 mSuspendWakeLock.setReferenceCounted(false); 1028 1029 mTcpBufferSizes = mContext.getResources().getString( 1030 com.android.internal.R.string.config_wifi_tcp_buffers); 1031 1032 addState(mDefaultState); 1033 addState(mInitialState, mDefaultState); 1034 addState(mSupplicantStartingState, mDefaultState); 1035 addState(mSupplicantStartedState, mDefaultState); 1036 addState(mDriverStartingState, mSupplicantStartedState); 1037 addState(mDriverStartedState, mSupplicantStartedState); 1038 addState(mScanModeState, mDriverStartedState); 1039 addState(mConnectModeState, mDriverStartedState); 1040 addState(mL2ConnectedState, mConnectModeState); 1041 addState(mObtainingIpState, mL2ConnectedState); 1042 addState(mVerifyingLinkState, mL2ConnectedState); 1043 addState(mConnectedState, mL2ConnectedState); 1044 addState(mRoamingState, mL2ConnectedState); 1045 addState(mDisconnectingState, mConnectModeState); 1046 addState(mDisconnectedState, mConnectModeState); 1047 addState(mWpsRunningState, mConnectModeState); 1048 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1049 addState(mDriverStoppingState, mSupplicantStartedState); 1050 addState(mDriverStoppedState, mSupplicantStartedState); 1051 addState(mSupplicantStoppingState, mDefaultState); 1052 addState(mSoftApStartingState, mDefaultState); 1053 addState(mSoftApStartedState, mDefaultState); 1054 addState(mTetheringState, mSoftApStartedState); 1055 addState(mTetheredState, mSoftApStartedState); 1056 addState(mUntetheringState, mSoftApStartedState); 1057 1058 setInitialState(mInitialState); 1059 1060 setLogRecSize(ActivityManager.isLowRamDeviceStatic() ? 100 : 3000); 1061 setLogOnlyTransitions(false); 1062 if (VDBG) setDbg(true); 1063 1064 //start the state machine 1065 start(); 1066 1067 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1068 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1069 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1070 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1071 } 1072 1073 1074 PendingIntent getPrivateBroadcast(String action, int requestCode) { 1075 Intent intent = new Intent(action, null); 1076 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1077 intent.setPackage(this.getClass().getPackage().getName()); 1078 return PendingIntent.getBroadcast(mContext, requestCode, intent, 0); 1079 } 1080 1081 private int mVerboseLoggingLevel = 0; 1082 1083 int getVerboseLoggingLevel() { 1084 return mVerboseLoggingLevel; 1085 } 1086 1087 void enableVerboseLogging(int verbose) { 1088 mVerboseLoggingLevel = verbose; 1089 if (verbose > 0) { 1090 DBG = true; 1091 VDBG = true; 1092 PDBG = true; 1093 mLogMessages = true; 1094 mWifiNative.setSupplicantLogLevel("DEBUG"); 1095 } else { 1096 DBG = false; 1097 VDBG = false; 1098 PDBG = false; 1099 mLogMessages = false; 1100 mWifiNative.setSupplicantLogLevel("INFO"); 1101 } 1102 mWifiAutoJoinController.enableVerboseLogging(verbose); 1103 mWifiMonitor.enableVerboseLogging(verbose); 1104 mWifiNative.enableVerboseLogging(verbose); 1105 mWifiConfigStore.enableVerboseLogging(verbose); 1106 mSupplicantStateTracker.enableVerboseLogging(verbose); 1107 } 1108 1109 private int mAggressiveHandover = 0; 1110 1111 int getAggressiveHandover() { 1112 return mAggressiveHandover; 1113 } 1114 1115 void enableAggressiveHandover(int enabled) { 1116 mAggressiveHandover = enabled; 1117 } 1118 1119 public void setAllowScansWithTraffic(int enabled) { 1120 mWifiConfigStore.alwaysEnableScansWhileAssociated = enabled; 1121 } 1122 1123 public int getAllowScansWithTraffic() { 1124 return mWifiConfigStore.alwaysEnableScansWhileAssociated; 1125 } 1126 1127 /* 1128 * 1129 * Framework scan control 1130 */ 1131 1132 private boolean mAlarmEnabled = false; 1133 /* This is set from the overlay config file or from a secure setting. 1134 * A value of 0 disables scanning in the framework. 1135 */ 1136 private long mFrameworkScanIntervalMs = 10000; 1137 1138 private AtomicInteger mDelayedScanCounter = new AtomicInteger(); 1139 1140 private void setScanAlarm(boolean enabled) { 1141 if (PDBG) { 1142 loge("setScanAlarm " + enabled 1143 + " period " + mDefaultFrameworkScanIntervalMs 1144 + " mBackgroundScanSupported " + mBackgroundScanSupported); 1145 } 1146 if (mBackgroundScanSupported == false) { 1147 // Scan alarm is only used for background scans if they are not 1148 // offloaded to the wifi chipset, hence enable the scan alarm 1149 // gicing us RTC_WAKEUP of backgroundScan is NOT supported 1150 enabled = true; 1151 } 1152 1153 if (enabled == mAlarmEnabled) return; 1154 if (enabled) { 1155 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1156 /* going to wake up the host processor to look for access points */ 1157 mAlarmManager.set(AlarmManager.RTC_WAKEUP, 1158 System.currentTimeMillis() + mDefaultFrameworkScanIntervalMs, 1159 mScanIntent); 1160 mAlarmEnabled = true; 1161 } else { 1162 mAlarmManager.cancel(mScanIntent); 1163 mAlarmEnabled = false; 1164 } 1165 } 1166 1167 private void cancelDelayedScan() { 1168 mDelayedScanCounter.incrementAndGet(); 1169 loge("cancelDelayedScan -> " + mDelayedScanCounter); 1170 } 1171 1172 private boolean checkAndRestartDelayedScan(int counter, boolean restart, int milli, 1173 ScanSettings settings, WorkSource workSource) { 1174 if (counter != mDelayedScanCounter.get()) { 1175 return false; 1176 } 1177 if (restart) 1178 startDelayedScan(milli, settings, workSource); 1179 return true; 1180 } 1181 1182 private void startDelayedScan(int milli, ScanSettings settings, WorkSource workSource) { 1183 if (milli <= 0) return; 1184 /** 1185 * The cases where the scan alarm should be run are : 1186 * - DisconnectedState && screenOn => used delayed timer 1187 * - DisconnectedState && !screenOn && mBackgroundScanSupported => PNO 1188 * - DisconnectedState && !screenOn && !mBackgroundScanSupported => used RTC_WAKEUP Alarm 1189 * - ConnectedState && screenOn => used delayed timer 1190 */ 1191 1192 mDelayedScanCounter.incrementAndGet(); 1193 if (mScreenOn && 1194 (getCurrentState() == mDisconnectedState 1195 || getCurrentState() == mConnectedState)) { 1196 Bundle bundle = new Bundle(); 1197 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1198 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1199 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1200 sendMessageDelayed(CMD_START_SCAN, SCAN_ALARM_SOURCE, 1201 mDelayedScanCounter.get(), bundle, milli); 1202 if (DBG) loge("startDelayedScan send -> " + mDelayedScanCounter + " milli " + milli); 1203 } else if (mBackgroundScanSupported == false 1204 && !mScreenOn && getCurrentState() == mDisconnectedState) { 1205 setScanAlarm(true); 1206 if (DBG) loge("startDelayedScan start scan alarm -> " 1207 + mDelayedScanCounter + " milli " + milli); 1208 } else { 1209 if (DBG) loge("startDelayedScan unhandled -> " 1210 + mDelayedScanCounter + " milli " + milli); 1211 } 1212 } 1213 1214 private boolean setRandomMacOui() { 1215 String oui = mContext.getResources().getString( 1216 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1217 String[] ouiParts = oui.split("-"); 1218 byte[] ouiBytes = new byte[3]; 1219 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1220 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1221 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1222 1223 logd("Setting OUI to " + oui); 1224 return mWifiNative.setScanningMacOui(ouiBytes); 1225 } 1226 1227 /********************************************************* 1228 * Methods exposed for public use 1229 ********************************************************/ 1230 1231 public Messenger getMessenger() { 1232 return new Messenger(getHandler()); 1233 } 1234 1235 public WifiMonitor getWifiMonitor() { 1236 return mWifiMonitor; 1237 } 1238 1239 /** 1240 * TODO: doc 1241 */ 1242 public boolean syncPingSupplicant(AsyncChannel channel) { 1243 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1244 boolean result = (resultMsg.arg1 != FAILURE); 1245 resultMsg.recycle(); 1246 return result; 1247 } 1248 1249 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1250 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1251 List<WifiChannel> list = null; 1252 if (resultMsg.obj != null) { 1253 list = new ArrayList<WifiChannel>(); 1254 String freqs = (String) resultMsg.obj; 1255 String[] lines = freqs.split("\n"); 1256 for (String line : lines) 1257 if (line.contains("MHz")) { 1258 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1259 WifiChannel c = new WifiChannel(); 1260 String[] prop = line.split(" "); 1261 if (prop.length < 5) continue; 1262 try { 1263 c.channelNum = Integer.parseInt(prop[1]); 1264 c.freqMHz = Integer.parseInt(prop[3]); 1265 } catch (NumberFormatException e) { } 1266 c.isDFS = line.contains("(DFS)"); 1267 list.add(c); 1268 } else if (line.contains("Mode[B] Channels:")) { 1269 // B channels are the same as G channels, skipped 1270 break; 1271 } 1272 } 1273 resultMsg.recycle(); 1274 return (list != null && list.size() > 0) ? list : null; 1275 } 1276 1277 /** 1278 * When settings allowing making use of untrusted networks change, trigger a scan 1279 * so as to kick of autojoin. 1280 */ 1281 public void startScanForUntrustedSettingChange() { 1282 startScan(SET_ALLOW_UNTRUSTED_SOURCE, 0, null, null); 1283 } 1284 1285 /** 1286 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1287 * given to callingUid. 1288 * 1289 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1290 * workSource is specified. 1291 * @param workSource If not null, blame is given to workSource. 1292 * @param settings Scan settings, see {@link ScanSettings}. 1293 */ 1294 public void startScan(int callingUid, int scanCounter, 1295 ScanSettings settings, WorkSource workSource) { 1296 Bundle bundle = new Bundle(); 1297 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1298 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1299 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1300 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1301 } 1302 1303 /** 1304 * start or stop batched scanning using the given settings 1305 */ 1306 public void setBatchedScanSettings(BatchedScanSettings settings, int callingUid, int csph, 1307 WorkSource workSource) { 1308 Bundle bundle = new Bundle(); 1309 bundle.putParcelable(BATCHED_SETTING, settings); 1310 bundle.putParcelable(BATCHED_WORKSOURCE, workSource); 1311 sendMessage(CMD_SET_BATCHED_SCAN, callingUid, csph, bundle); 1312 } 1313 1314 public List<BatchedScanResult> syncGetBatchedScanResultsList() { 1315 synchronized (mBatchedScanResults) { 1316 List<BatchedScanResult> batchedScanList = 1317 new ArrayList<BatchedScanResult>(mBatchedScanResults.size()); 1318 for(BatchedScanResult result: mBatchedScanResults) { 1319 batchedScanList.add(new BatchedScanResult(result)); 1320 } 1321 return batchedScanList; 1322 } 1323 } 1324 1325 public void requestBatchedScanPoll() { 1326 sendMessage(CMD_POLL_BATCHED_SCAN); 1327 } 1328 1329 private void startBatchedScan() { 1330 if (mBatchedScanSettings == null) return; 1331 1332 if (mDhcpActive) { 1333 if (DBG) log("not starting Batched Scans due to DHCP"); 1334 return; 1335 } 1336 1337 // first grab any existing data 1338 retrieveBatchedScanData(); 1339 1340 if (PDBG) loge("try starting Batched Scans due to DHCP"); 1341 1342 1343 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1344 1345 String scansExpected = mWifiNative.setBatchedScanSettings(mBatchedScanSettings); 1346 try { 1347 mExpectedBatchedScans = Integer.parseInt(scansExpected); 1348 setNextBatchedAlarm(mExpectedBatchedScans); 1349 if (mExpectedBatchedScans > 0) noteBatchedScanStart(); 1350 } catch (NumberFormatException e) { 1351 stopBatchedScan(); 1352 loge("Exception parsing WifiNative.setBatchedScanSettings response " + e); 1353 } 1354 } 1355 1356 // called from BroadcastListener 1357 private void startNextBatchedScanAsync() { 1358 sendMessage(CMD_START_NEXT_BATCHED_SCAN); 1359 } 1360 1361 private void startNextBatchedScan() { 1362 // first grab any existing data 1363 retrieveBatchedScanData(); 1364 1365 setNextBatchedAlarm(mExpectedBatchedScans); 1366 } 1367 1368 private void handleBatchedScanPollRequest() { 1369 if (DBG) { 1370 log("handleBatchedScanPoll Request - mBatchedScanMinPollTime=" + 1371 mBatchedScanMinPollTime + " , mBatchedScanSettings=" + 1372 mBatchedScanSettings); 1373 } 1374 // if there is no appropriate PollTime that's because we either aren't 1375 // batching or we've already set a time for a poll request 1376 if (mBatchedScanMinPollTime == 0) return; 1377 if (mBatchedScanSettings == null) return; 1378 1379 long now = System.currentTimeMillis(); 1380 1381 if (now > mBatchedScanMinPollTime) { 1382 // do the poll and reset our timers 1383 startNextBatchedScan(); 1384 } else { 1385 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, mBatchedScanMinPollTime, 1386 mBatchedScanIntervalIntent); 1387 mBatchedScanMinPollTime = 0; 1388 } 1389 } 1390 1391 // return true if new/different 1392 private boolean recordBatchedScanSettings(int responsibleUid, int csph, Bundle bundle) { 1393 BatchedScanSettings settings = bundle.getParcelable(BATCHED_SETTING); 1394 WorkSource responsibleWorkSource = bundle.getParcelable(BATCHED_WORKSOURCE); 1395 1396 if (DBG) { 1397 log("set batched scan to " + settings + " for uid=" + responsibleUid + 1398 ", worksource=" + responsibleWorkSource); 1399 } 1400 if (settings != null) { 1401 if (settings.equals(mBatchedScanSettings)) return false; 1402 } else { 1403 if (mBatchedScanSettings == null) return false; 1404 } 1405 mBatchedScanSettings = settings; 1406 if (responsibleWorkSource == null) responsibleWorkSource = new WorkSource(responsibleUid); 1407 mBatchedScanWorkSource = responsibleWorkSource; 1408 mBatchedScanCsph = csph; 1409 return true; 1410 } 1411 1412 private void stopBatchedScan() { 1413 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1414 retrieveBatchedScanData(); 1415 mWifiNative.setBatchedScanSettings(null); 1416 noteBatchedScanStop(); 1417 } 1418 1419 private void setNextBatchedAlarm(int scansExpected) { 1420 1421 if (mBatchedScanSettings == null || scansExpected < 1) return; 1422 1423 mBatchedScanMinPollTime = System.currentTimeMillis() + 1424 mBatchedScanSettings.scanIntervalSec * 1000; 1425 1426 if (mBatchedScanSettings.maxScansPerBatch < scansExpected) { 1427 scansExpected = mBatchedScanSettings.maxScansPerBatch; 1428 } 1429 1430 int secToFull = mBatchedScanSettings.scanIntervalSec; 1431 secToFull *= scansExpected; 1432 1433 int debugPeriod = SystemProperties.getInt("wifi.batchedScan.pollPeriod", 0); 1434 if (debugPeriod > 0) secToFull = debugPeriod; 1435 1436 // set the alarm to do the next poll. We set it a little short as we'd rather 1437 // wake up wearly than miss a scan due to buffer overflow 1438 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 1439 + ((secToFull - (mBatchedScanSettings.scanIntervalSec / 2)) * 1000), 1440 mBatchedScanIntervalIntent); 1441 } 1442 1443 /** 1444 * Start reading new scan data 1445 * Data comes in as: 1446 * "scancount=5\n" 1447 * "nextcount=5\n" 1448 * "apcount=3\n" 1449 * "trunc\n" (optional) 1450 * "bssid=...\n" 1451 * "ssid=...\n" 1452 * "freq=...\n" (in Mhz) 1453 * "level=...\n" 1454 * "dist=...\n" (in cm) 1455 * "distsd=...\n" (standard deviation, in cm) 1456 * "====" 1457 * "bssid=...\n" 1458 * etc 1459 * "====" 1460 * "bssid=...\n" 1461 * etc 1462 * "%%%%" 1463 * "apcount=2\n" 1464 * "bssid=...\n" 1465 * etc 1466 * "%%%% 1467 * etc 1468 * "----" 1469 */ 1470 private final static boolean DEBUG_PARSE = false; 1471 private void retrieveBatchedScanData() { 1472 String rawData = mWifiNative.getBatchedScanResults(); 1473 if (DEBUG_PARSE) log("rawData = " + rawData); 1474 mBatchedScanMinPollTime = 0; 1475 if (rawData == null || rawData.equalsIgnoreCase("OK")) { 1476 loge("Unexpected BatchedScanResults :" + rawData); 1477 return; 1478 } 1479 1480 int scanCount = 0; 1481 final String END_OF_BATCHES = "----"; 1482 final String SCANCOUNT = "scancount="; 1483 final String TRUNCATED = "trunc"; 1484 final String AGE = "age="; 1485 final String DIST = "dist="; 1486 final String DISTSD = "distSd="; 1487 1488 String splitData[] = rawData.split("\n"); 1489 int n = 0; 1490 if (splitData[n].startsWith(SCANCOUNT)) { 1491 try { 1492 scanCount = Integer.parseInt(splitData[n++].substring(SCANCOUNT.length())); 1493 } catch (NumberFormatException e) { 1494 loge("scancount parseInt Exception from " + splitData[n]); 1495 } 1496 } else log("scancount not found"); 1497 if (scanCount == 0) { 1498 loge("scanCount==0 - aborting"); 1499 return; 1500 } 1501 1502 final Intent intent = new Intent(WifiManager.BATCHED_SCAN_RESULTS_AVAILABLE_ACTION); 1503 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1504 1505 synchronized (mBatchedScanResults) { 1506 mBatchedScanResults.clear(); 1507 BatchedScanResult batchedScanResult = new BatchedScanResult(); 1508 1509 String bssid = null; 1510 WifiSsid wifiSsid = null; 1511 int level = 0; 1512 int freq = 0; 1513 int dist, distSd; 1514 long tsf = 0; 1515 dist = distSd = ScanResult.UNSPECIFIED; 1516 final long now = SystemClock.elapsedRealtime(); 1517 final int bssidStrLen = BSSID_STR.length(); 1518 1519 while (true) { 1520 while (n < splitData.length) { 1521 if (DEBUG_PARSE) logd("parsing " + splitData[n]); 1522 if (splitData[n].equals(END_OF_BATCHES)) { 1523 if (n+1 != splitData.length) { 1524 loge("didn't consume " + (splitData.length-n)); 1525 } 1526 if (mBatchedScanResults.size() > 0) { 1527 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1528 } 1529 logd("retrieveBatchedScanResults X"); 1530 return; 1531 } 1532 if ((splitData[n].equals(END_STR)) || splitData[n].equals(DELIMITER_STR)) { 1533 if (bssid != null) { 1534 batchedScanResult.scanResults.add(new ScanResult( 1535 wifiSsid, bssid, "", level, freq, tsf, dist, distSd)); 1536 wifiSsid = null; 1537 bssid = null; 1538 level = 0; 1539 freq = 0; 1540 tsf = 0; 1541 dist = distSd = ScanResult.UNSPECIFIED; 1542 } 1543 if (splitData[n].equals(END_STR)) { 1544 if (batchedScanResult.scanResults.size() != 0) { 1545 mBatchedScanResults.add(batchedScanResult); 1546 batchedScanResult = new BatchedScanResult(); 1547 } else { 1548 logd("Found empty batch"); 1549 } 1550 } 1551 } else if (splitData[n].equals(TRUNCATED)) { 1552 batchedScanResult.truncated = true; 1553 } else if (splitData[n].startsWith(BSSID_STR)) { 1554 bssid = new String(splitData[n].getBytes(), bssidStrLen, 1555 splitData[n].length() - bssidStrLen); 1556 } else if (splitData[n].startsWith(FREQ_STR)) { 1557 try { 1558 freq = Integer.parseInt(splitData[n].substring(FREQ_STR.length())); 1559 } catch (NumberFormatException e) { 1560 loge("Invalid freqency: " + splitData[n]); 1561 freq = 0; 1562 } 1563 } else if (splitData[n].startsWith(AGE)) { 1564 try { 1565 tsf = now - Long.parseLong(splitData[n].substring(AGE.length())); 1566 tsf *= 1000; // convert mS -> uS 1567 } catch (NumberFormatException e) { 1568 loge("Invalid timestamp: " + splitData[n]); 1569 tsf = 0; 1570 } 1571 } else if (splitData[n].startsWith(SSID_STR)) { 1572 wifiSsid = WifiSsid.createFromAsciiEncoded( 1573 splitData[n].substring(SSID_STR.length())); 1574 } else if (splitData[n].startsWith(LEVEL_STR)) { 1575 try { 1576 level = Integer.parseInt(splitData[n].substring(LEVEL_STR.length())); 1577 if (level > 0) level -= 256; 1578 } catch (NumberFormatException e) { 1579 loge("Invalid level: " + splitData[n]); 1580 level = 0; 1581 } 1582 } else if (splitData[n].startsWith(DIST)) { 1583 try { 1584 dist = Integer.parseInt(splitData[n].substring(DIST.length())); 1585 } catch (NumberFormatException e) { 1586 loge("Invalid distance: " + splitData[n]); 1587 dist = ScanResult.UNSPECIFIED; 1588 } 1589 } else if (splitData[n].startsWith(DISTSD)) { 1590 try { 1591 distSd = Integer.parseInt(splitData[n].substring(DISTSD.length())); 1592 } catch (NumberFormatException e) { 1593 loge("Invalid distanceSd: " + splitData[n]); 1594 distSd = ScanResult.UNSPECIFIED; 1595 } 1596 } else { 1597 loge("Unable to parse batched scan result line: " + splitData[n]); 1598 } 1599 n++; 1600 } 1601 rawData = mWifiNative.getBatchedScanResults(); 1602 if (DEBUG_PARSE) log("reading more data:\n" + rawData); 1603 if (rawData == null) { 1604 loge("Unexpected null BatchedScanResults"); 1605 return; 1606 } 1607 splitData = rawData.split("\n"); 1608 if (splitData.length == 0 || splitData[0].equals("ok")) { 1609 loge("batch scan results just ended!"); 1610 if (mBatchedScanResults.size() > 0) { 1611 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1612 } 1613 return; 1614 } 1615 n = 0; 1616 } 1617 } 1618 } 1619 1620 private long mDisconnectedTimeStamp = 0; 1621 1622 public long getDisconnectedTimeMilli() { 1623 if (getCurrentState() == mDisconnectedState 1624 && mDisconnectedTimeStamp != 0) { 1625 long now_ms = System.currentTimeMillis(); 1626 return now_ms - mDisconnectedTimeStamp; 1627 } 1628 return 0; 1629 } 1630 1631 // Keeping track of scan requests 1632 private long lastStartScanTimeStamp = 0; 1633 private long lastScanDuration = 0; 1634 // Last connect attempt is used to prevent scan requests: 1635 // - for a period of 10 seconds after attempting to connect 1636 private long lastConnectAttempt = 0; 1637 private String lastScanFreqs = null; 1638 1639 // For debugging, keep track of last message status handling 1640 // TODO, find an equivalent mechanism as part of parent class 1641 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1642 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1643 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1644 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1645 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1646 private static int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; 1647 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1648 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1649 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1650 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1651 1652 private int messageHandlingStatus = 0; 1653 1654 //TODO: this is used only to track connection attempts, however the link state and packet per 1655 //TODO: second logic should be folded into that 1656 private boolean checkOrDeferScanAllowed(Message msg) { 1657 long now = System.currentTimeMillis(); 1658 if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { 1659 Message dmsg = Message.obtain(msg); 1660 sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttempt)); 1661 return false; 1662 } 1663 return true; 1664 } 1665 1666 private int mOnTime = 0; 1667 private int mTxTime = 0; 1668 private int mRxTime = 0; 1669 private int mOnTimeStartScan = 0; 1670 private int mTxTimeStartScan = 0; 1671 private int mRxTimeStartScan = 0; 1672 private int mOnTimeScan = 0; 1673 private int mTxTimeScan = 0; 1674 private int mRxTimeScan = 0; 1675 private int mOnTimeThisScan = 0; 1676 private int mTxTimeThisScan = 0; 1677 private int mRxTimeThisScan = 0; 1678 1679 private int mOnTimeScreenStateChange = 0; 1680 private int mOnTimeAtLastReport = 0; 1681 private long lastOntimeReportTimeStamp = 0; 1682 private long lastScreenStateChangeTimeStamp = 0; 1683 private int mOnTimeLastReport = 0; 1684 private int mTxTimeLastReport = 0; 1685 private int mRxTimeLastReport = 0; 1686 1687 private long lastLinkLayerStatsUpdate = 0; 1688 1689 String reportOnTime() { 1690 long now = System.currentTimeMillis(); 1691 StringBuilder sb = new StringBuilder(); 1692 // Report stats since last report 1693 int on = mOnTime - mOnTimeLastReport; 1694 mOnTimeLastReport = mOnTime; 1695 int tx = mTxTime - mTxTimeLastReport; 1696 mTxTimeLastReport = mTxTime; 1697 int rx = mRxTime - mRxTimeLastReport; 1698 mRxTimeLastReport = mRxTime; 1699 int period = (int)(now - lastOntimeReportTimeStamp); 1700 lastOntimeReportTimeStamp = now; 1701 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1702 // Report stats since Screen State Changed 1703 on = mOnTime - mOnTimeScreenStateChange; 1704 period = (int)(now - lastScreenStateChangeTimeStamp); 1705 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1706 return sb.toString(); 1707 } 1708 1709 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1710 WifiLinkLayerStats stats = null; 1711 if (mWifiLinkLayerStatsSupported > 0) { 1712 String name = "wlan0"; 1713 stats = mWifiNative.getWifiLinkLayerStats(name); 1714 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1715 mWifiLinkLayerStatsSupported -= 1; 1716 } else if (stats != null) { 1717 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1718 mOnTime = stats.on_time; 1719 mTxTime = stats.tx_time; 1720 mRxTime = stats.rx_time; 1721 mRunningBeaconCount = stats.beacon_rx; 1722 if (dbg) { 1723 loge(stats.toString()); 1724 } 1725 } 1726 } 1727 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 1728 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 1729 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 1730 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 1731 } else { 1732 mWifiInfo.updatePacketRates(stats); 1733 } 1734 return stats; 1735 } 1736 1737 void startRadioScanStats() { 1738 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1739 if (stats != null) { 1740 mOnTimeStartScan = stats.on_time; 1741 mTxTimeStartScan = stats.tx_time; 1742 mRxTimeStartScan = stats.rx_time; 1743 mOnTime = stats.on_time; 1744 mTxTime = stats.tx_time; 1745 mRxTime = stats.rx_time; 1746 } 1747 } 1748 1749 void closeRadioScanStats() { 1750 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1751 if (stats != null) { 1752 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1753 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1754 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1755 mOnTimeScan += mOnTimeThisScan; 1756 mTxTimeScan += mTxTimeThisScan; 1757 mRxTimeScan += mRxTimeThisScan; 1758 } 1759 } 1760 1761 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1762 private void noteScanStart(int callingUid, WorkSource workSource) { 1763 long now = System.currentTimeMillis(); 1764 lastStartScanTimeStamp = now; 1765 lastScanDuration = 0; 1766 if (DBG) { 1767 String ts = String.format("[%,d ms]", now); 1768 if (workSource != null) { 1769 loge(ts + " noteScanStart" + workSource.toString() 1770 + " uid " + Integer.toString(callingUid)); 1771 } else { 1772 loge(ts + " noteScanstart no scan source" 1773 + " uid " + Integer.toString(callingUid)); 1774 } 1775 } 1776 startRadioScanStats(); 1777 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1778 && callingUid != SCAN_ALARM_SOURCE) 1779 || workSource != null)) { 1780 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1781 try { 1782 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 1783 } catch (RemoteException e) { 1784 log(e.toString()); 1785 } 1786 } 1787 } 1788 1789 private void noteScanEnd() { 1790 long now = System.currentTimeMillis(); 1791 if (lastStartScanTimeStamp != 0) { 1792 lastScanDuration = now - lastStartScanTimeStamp; 1793 } 1794 lastStartScanTimeStamp = 0; 1795 if (DBG) { 1796 String ts = String.format("[%,d ms]", now); 1797 if (mScanWorkSource != null) 1798 loge(ts + " noteScanEnd " + mScanWorkSource.toString() 1799 + " onTime=" + mOnTimeThisScan); 1800 else 1801 loge(ts + " noteScanEnd no scan source" 1802 + " onTime=" + mOnTimeThisScan); 1803 } 1804 if (mScanWorkSource != null) { 1805 try { 1806 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1807 } catch (RemoteException e) { 1808 log(e.toString()); 1809 } finally { 1810 mScanWorkSource = null; 1811 } 1812 } 1813 } 1814 1815 private void noteBatchedScanStart() { 1816 if (PDBG) loge("noteBatchedScanstart()"); 1817 // note the end of a previous scan set 1818 if (mNotedBatchedScanWorkSource != null && 1819 (mNotedBatchedScanWorkSource.equals(mBatchedScanWorkSource) == false || 1820 mNotedBatchedScanCsph != mBatchedScanCsph)) { 1821 try { 1822 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1823 } catch (RemoteException e) { 1824 log(e.toString()); 1825 } finally { 1826 mNotedBatchedScanWorkSource = null; 1827 mNotedBatchedScanCsph = 0; 1828 } 1829 } 1830 // note the start of the new 1831 try { 1832 mBatteryStats.noteWifiBatchedScanStartedFromSource(mBatchedScanWorkSource, 1833 mBatchedScanCsph); 1834 mNotedBatchedScanWorkSource = mBatchedScanWorkSource; 1835 mNotedBatchedScanCsph = mBatchedScanCsph; 1836 } catch (RemoteException e) { 1837 log(e.toString()); 1838 } 1839 } 1840 1841 private void noteBatchedScanStop() { 1842 if (PDBG) loge("noteBatchedScanstop()"); 1843 1844 if (mNotedBatchedScanWorkSource != null) { 1845 try { 1846 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1847 } catch (RemoteException e) { 1848 log(e.toString()); 1849 } finally { 1850 mNotedBatchedScanWorkSource = null; 1851 mNotedBatchedScanCsph = 0; 1852 } 1853 } 1854 } 1855 1856 private void handleScanRequest(int type, Message message) { 1857 ScanSettings settings = null; 1858 WorkSource workSource = null; 1859 1860 // unbundle parameters 1861 Bundle bundle = (Bundle) message.obj; 1862 1863 if (bundle != null) { 1864 settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1865 workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1866 } 1867 1868 // parse scan settings 1869 String freqs = null; 1870 if (settings != null && settings.channelSet != null) { 1871 StringBuilder sb = new StringBuilder(); 1872 boolean first = true; 1873 for (WifiChannel channel : settings.channelSet) { 1874 if (!first) sb.append(','); else first = false; 1875 sb.append(channel.freqMHz); 1876 } 1877 freqs = sb.toString(); 1878 } 1879 1880 // call wifi native to start the scan 1881 if (startScanNative(type, freqs)) { 1882 // only count battery consumption if scan request is accepted 1883 noteScanStart(message.arg1, workSource); 1884 // a full scan covers everything, clearing scan request buffer 1885 if (freqs == null) 1886 mBufferedScanMsg.clear(); 1887 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1888 if (workSource != null) { 1889 // External worksource was passed along the scan request, 1890 // hence always send a broadcast 1891 mSendScanResultsBroadcast = true; 1892 } 1893 return; 1894 } 1895 1896 // if reach here, scan request is rejected 1897 1898 if (!mIsScanOngoing) { 1899 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1900 1901 // discard this request and pop up the next one 1902 if (mBufferedScanMsg.size() > 0) { 1903 sendMessage(mBufferedScanMsg.remove()); 1904 } 1905 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 1906 } else if (!mIsFullScanOngoing) { 1907 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 1908 // buffer the scan request to make sure specified channels will be scanned eventually 1909 if (freqs == null) 1910 mBufferedScanMsg.clear(); 1911 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 1912 Message msg = obtainMessage(CMD_START_SCAN, 1913 message.arg1, message.arg2, bundle); 1914 mBufferedScanMsg.add(msg); 1915 } else { 1916 // if too many requests in buffer, combine them into a single full scan 1917 bundle = new Bundle(); 1918 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 1919 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1920 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 1921 mBufferedScanMsg.clear(); 1922 mBufferedScanMsg.add(msg); 1923 } 1924 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 1925 } else { 1926 // mIsScanOngoing and mIsFullScanOngoing 1927 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 1928 } 1929 } 1930 1931 1932 /** return true iff scan request is accepted */ 1933 private boolean startScanNative(int type, String freqs) { 1934 if (mWifiNative.scan(type, freqs)) { 1935 mIsScanOngoing = true; 1936 mIsFullScanOngoing = (freqs == null); 1937 lastScanFreqs = freqs; 1938 return true; 1939 } 1940 return false; 1941 } 1942 1943 /** 1944 * TODO: doc 1945 */ 1946 public void setSupplicantRunning(boolean enable) { 1947 if (enable) { 1948 sendMessage(CMD_START_SUPPLICANT); 1949 } else { 1950 sendMessage(CMD_STOP_SUPPLICANT); 1951 } 1952 } 1953 1954 /** 1955 * TODO: doc 1956 */ 1957 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 1958 if (enable) { 1959 sendMessage(CMD_START_AP, wifiConfig); 1960 } else { 1961 sendMessage(CMD_STOP_AP); 1962 } 1963 } 1964 1965 public void setWifiApConfiguration(WifiConfiguration config) { 1966 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 1967 } 1968 1969 public WifiConfiguration syncGetWifiApConfiguration() { 1970 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 1971 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 1972 resultMsg.recycle(); 1973 return ret; 1974 } 1975 1976 /** 1977 * TODO: doc 1978 */ 1979 public int syncGetWifiState() { 1980 return mWifiState.get(); 1981 } 1982 1983 /** 1984 * TODO: doc 1985 */ 1986 public String syncGetWifiStateByName() { 1987 switch (mWifiState.get()) { 1988 case WIFI_STATE_DISABLING: 1989 return "disabling"; 1990 case WIFI_STATE_DISABLED: 1991 return "disabled"; 1992 case WIFI_STATE_ENABLING: 1993 return "enabling"; 1994 case WIFI_STATE_ENABLED: 1995 return "enabled"; 1996 case WIFI_STATE_UNKNOWN: 1997 return "unknown state"; 1998 default: 1999 return "[invalid state]"; 2000 } 2001 } 2002 2003 /** 2004 * TODO: doc 2005 */ 2006 public int syncGetWifiApState() { 2007 return mWifiApState.get(); 2008 } 2009 2010 /** 2011 * TODO: doc 2012 */ 2013 public String syncGetWifiApStateByName() { 2014 switch (mWifiApState.get()) { 2015 case WIFI_AP_STATE_DISABLING: 2016 return "disabling"; 2017 case WIFI_AP_STATE_DISABLED: 2018 return "disabled"; 2019 case WIFI_AP_STATE_ENABLING: 2020 return "enabling"; 2021 case WIFI_AP_STATE_ENABLED: 2022 return "enabled"; 2023 case WIFI_AP_STATE_FAILED: 2024 return "failed"; 2025 default: 2026 return "[invalid state]"; 2027 } 2028 } 2029 2030 /** 2031 * Get status information for the current connection, if any. 2032 * @return a {@link WifiInfo} object containing information about the current connection 2033 * 2034 */ 2035 public WifiInfo syncRequestConnectionInfo() { 2036 return mWifiInfo; 2037 } 2038 2039 public DhcpResults syncGetDhcpResults() { 2040 synchronized (mDhcpResultsLock) { 2041 return new DhcpResults(mDhcpResults); 2042 } 2043 } 2044 2045 /** 2046 * TODO: doc 2047 */ 2048 public void setDriverStart(boolean enable) { 2049 if (enable) { 2050 sendMessage(CMD_START_DRIVER); 2051 } else { 2052 sendMessage(CMD_STOP_DRIVER); 2053 } 2054 } 2055 2056 /** 2057 * TODO: doc 2058 */ 2059 public void setOperationalMode(int mode) { 2060 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 2061 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 2062 } 2063 2064 /** 2065 * TODO: doc 2066 */ 2067 public List<ScanResult> syncGetScanResultsList() { 2068 synchronized (mScanResultCache) { 2069 List<ScanResult> scanList = new ArrayList<ScanResult>(); 2070 for(ScanResult result: mScanResults) { 2071 scanList.add(new ScanResult(result)); 2072 } 2073 return scanList; 2074 } 2075 } 2076 2077 public void disableEphemeralNetwork(String SSID) { 2078 if (SSID != null) { 2079 sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID); 2080 } 2081 } 2082 2083 /** 2084 * Get unsynchronized pointer to scan result list 2085 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 2086 */ 2087 public List<ScanResult> getScanResultsListNoCopyUnsync() { 2088 return mScanResults; 2089 } 2090 2091 /** 2092 * Disconnect from Access Point 2093 */ 2094 public void disconnectCommand() { 2095 sendMessage(CMD_DISCONNECT); 2096 } 2097 2098 public void disconnectCommand(int uid, int reason) { 2099 sendMessage(CMD_DISCONNECT, uid, reason); 2100 } 2101 2102 /** 2103 * Initiate a reconnection to AP 2104 */ 2105 public void reconnectCommand() { 2106 sendMessage(CMD_RECONNECT); 2107 } 2108 2109 /** 2110 * Initiate a re-association to AP 2111 */ 2112 public void reassociateCommand() { 2113 sendMessage(CMD_REASSOCIATE); 2114 } 2115 2116 /** 2117 * Reload networks and then reconnect; helps load correct data for TLS networks 2118 */ 2119 2120 public void reloadTlsNetworksAndReconnect() { 2121 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 2122 } 2123 2124 /** 2125 * Add a network synchronously 2126 * 2127 * @return network id of the new network 2128 */ 2129 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2130 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2131 int result = resultMsg.arg1; 2132 resultMsg.recycle(); 2133 return result; 2134 } 2135 2136 /** 2137 * Get configured networks synchronously 2138 * @param channel 2139 * @return 2140 */ 2141 2142 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2143 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2144 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2145 resultMsg.recycle(); 2146 return result; 2147 } 2148 2149 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2150 Message resultMsg = channel.sendMessageSynchronously( 2151 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2152 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2153 resultMsg.recycle(); 2154 return result; 2155 } 2156 2157 2158 /** 2159 * Get connection statistics synchronously 2160 * @param channel 2161 * @return 2162 */ 2163 2164 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2165 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2166 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2167 resultMsg.recycle(); 2168 return result; 2169 } 2170 2171 /** 2172 * Get adaptors synchronously 2173 */ 2174 2175 public int syncGetSupportedFeatures(AsyncChannel channel) { 2176 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2177 int supportedFeatureSet = resultMsg.arg1; 2178 resultMsg.recycle(); 2179 return supportedFeatureSet; 2180 } 2181 2182 /** 2183 * Get link layers stats for adapter synchronously 2184 */ 2185 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2186 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2187 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2188 resultMsg.recycle(); 2189 return result; 2190 } 2191 2192 /** 2193 * Delete a network 2194 * 2195 * @param networkId id of the network to be removed 2196 */ 2197 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2198 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2199 boolean result = (resultMsg.arg1 != FAILURE); 2200 resultMsg.recycle(); 2201 return result; 2202 } 2203 2204 /** 2205 * Enable a network 2206 * 2207 * @param netId network id of the network 2208 * @param disableOthers true, if all other networks have to be disabled 2209 * @return {@code true} if the operation succeeds, {@code false} otherwise 2210 */ 2211 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2212 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2213 disableOthers ? 1 : 0); 2214 boolean result = (resultMsg.arg1 != FAILURE); 2215 resultMsg.recycle(); 2216 return result; 2217 } 2218 2219 /** 2220 * Disable a network 2221 * 2222 * @param netId network id of the network 2223 * @return {@code true} if the operation succeeds, {@code false} otherwise 2224 */ 2225 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2226 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2227 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2228 resultMsg.recycle(); 2229 return result; 2230 } 2231 2232 /** 2233 * Retrieves a WPS-NFC configuration token for the specified network 2234 * @return a hex string representation of the WPS-NFC configuration token 2235 */ 2236 public String syncGetWpsNfcConfigurationToken(int netId) { 2237 return mWifiNative.getNfcWpsConfigurationToken(netId); 2238 } 2239 2240 void enableBackgroundScan(boolean enable) { 2241 if (enable) { 2242 mWifiConfigStore.enableAllNetworks(); 2243 } 2244 mWifiNative.enableBackgroundScan(enable); 2245 } 2246 2247 /** 2248 * Blacklist a BSSID. This will avoid the AP if there are 2249 * alternate APs to connect 2250 * 2251 * @param bssid BSSID of the network 2252 */ 2253 public void addToBlacklist(String bssid) { 2254 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2255 } 2256 2257 /** 2258 * Clear the blacklist list 2259 * 2260 */ 2261 public void clearBlacklist() { 2262 sendMessage(CMD_CLEAR_BLACKLIST); 2263 } 2264 2265 public void enableRssiPolling(boolean enabled) { 2266 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2267 } 2268 2269 public void enableAllNetworks() { 2270 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2271 } 2272 2273 /** 2274 * Start filtering Multicast v4 packets 2275 */ 2276 public void startFilteringMulticastV4Packets() { 2277 mFilteringMulticastV4Packets.set(true); 2278 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2279 } 2280 2281 /** 2282 * Stop filtering Multicast v4 packets 2283 */ 2284 public void stopFilteringMulticastV4Packets() { 2285 mFilteringMulticastV4Packets.set(false); 2286 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2287 } 2288 2289 /** 2290 * Start filtering Multicast v4 packets 2291 */ 2292 public void startFilteringMulticastV6Packets() { 2293 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2294 } 2295 2296 /** 2297 * Stop filtering Multicast v4 packets 2298 */ 2299 public void stopFilteringMulticastV6Packets() { 2300 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2301 } 2302 2303 /** 2304 * Set high performance mode of operation. 2305 * Enabling would set active power mode and disable suspend optimizations; 2306 * disabling would set auto power mode and enable suspend optimizations 2307 * @param enable true if enable, false otherwise 2308 */ 2309 public void setHighPerfModeEnabled(boolean enable) { 2310 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2311 } 2312 2313 /** 2314 * Set the country code 2315 * @param countryCode following ISO 3166 format 2316 * @param persist {@code true} if the setting should be remembered. 2317 */ 2318 public void setCountryCode(String countryCode, boolean persist) { 2319 // If it's a good country code, apply after the current 2320 // wifi connection is terminated; ignore resetting of code 2321 // for now (it is unclear what the chipset should do when 2322 // country code is reset) 2323 int countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2324 if (TextUtils.isEmpty(countryCode)) { 2325 log("Ignoring resetting of country code"); 2326 } else { 2327 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, countryCode); 2328 } 2329 } 2330 2331 /** 2332 * Set the operational frequency band 2333 * @param band 2334 * @param persist {@code true} if the setting should be remembered. 2335 */ 2336 public void setFrequencyBand(int band, boolean persist) { 2337 if (persist) { 2338 Settings.Global.putInt(mContext.getContentResolver(), 2339 Settings.Global.WIFI_FREQUENCY_BAND, 2340 band); 2341 } 2342 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2343 } 2344 2345 /** 2346 * Enable TDLS for a specific MAC address 2347 */ 2348 public void enableTdls(String remoteMacAddress, boolean enable) { 2349 int enabler = enable ? 1 : 0; 2350 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2351 } 2352 2353 /** 2354 * Returns the operational frequency band 2355 */ 2356 public int getFrequencyBand() { 2357 return mFrequencyBand.get(); 2358 } 2359 2360 /** 2361 * Returns the wifi configuration file 2362 */ 2363 public String getConfigFile() { 2364 return mWifiConfigStore.getConfigFile(); 2365 } 2366 2367 /** 2368 * Send a message indicating bluetooth adapter connection state changed 2369 */ 2370 public void sendBluetoothAdapterStateChange(int state) { 2371 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2372 } 2373 2374 /** 2375 * Save configuration on supplicant 2376 * 2377 * @return {@code true} if the operation succeeds, {@code false} otherwise 2378 * 2379 * TODO: deprecate this 2380 */ 2381 public boolean syncSaveConfig(AsyncChannel channel) { 2382 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2383 boolean result = (resultMsg.arg1 != FAILURE); 2384 resultMsg.recycle(); 2385 return result; 2386 } 2387 2388 public void updateBatteryWorkSource(WorkSource newSource) { 2389 synchronized (mRunningWifiUids) { 2390 try { 2391 if (newSource != null) { 2392 mRunningWifiUids.set(newSource); 2393 } 2394 if (mIsRunning) { 2395 if (mReportedRunning) { 2396 // If the work source has changed since last time, need 2397 // to remove old work from battery stats. 2398 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2399 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2400 mRunningWifiUids); 2401 mLastRunningWifiUids.set(mRunningWifiUids); 2402 } 2403 } else { 2404 // Now being started, report it. 2405 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2406 mLastRunningWifiUids.set(mRunningWifiUids); 2407 mReportedRunning = true; 2408 } 2409 } else { 2410 if (mReportedRunning) { 2411 // Last reported we were running, time to stop. 2412 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2413 mLastRunningWifiUids.clear(); 2414 mReportedRunning = false; 2415 } 2416 } 2417 mWakeLock.setWorkSource(newSource); 2418 } catch (RemoteException ignore) { 2419 } 2420 } 2421 } 2422 2423 @Override 2424 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2425 super.dump(fd, pw, args); 2426 mSupplicantStateTracker.dump(fd, pw, args); 2427 pw.println("mLinkProperties " + mLinkProperties); 2428 pw.println("mWifiInfo " + mWifiInfo); 2429 pw.println("mDhcpResults " + mDhcpResults); 2430 pw.println("mNetworkInfo " + mNetworkInfo); 2431 pw.println("mLastSignalLevel " + mLastSignalLevel); 2432 pw.println("mLastBssid " + mLastBssid); 2433 pw.println("mLastNetworkId " + mLastNetworkId); 2434 pw.println("mOperationalMode " + mOperationalMode); 2435 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2436 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2437 pw.println("Supplicant status " + mWifiNative.status(true)); 2438 pw.println("mEnableBackgroundScan " + mEnableBackgroundScan); 2439 pw.println("mLastSetCountryCode " + mLastSetCountryCode); 2440 pw.println("mPersistedCountryCode " + mPersistedCountryCode); 2441 mNetworkFactory.dump(fd, pw, args); 2442 mUntrustedNetworkFactory.dump(fd, pw, args); 2443 pw.println(); 2444 mWifiConfigStore.dump(fd, pw, args); 2445 } 2446 2447 /********************************************************* 2448 * Internal private functions 2449 ********************************************************/ 2450 2451 private void logStateAndMessage(Message message, String state) { 2452 messageHandlingStatus = 0; 2453 if (mLogMessages) { 2454 //long now = SystemClock.elapsedRealtimeNanos(); 2455 //String ts = String.format("[%,d us]", now/1000); 2456 2457 loge( " " + state + " " + getLogRecString(message)); 2458 } 2459 } 2460 2461 /** 2462 * helper, prints the milli time since boot wi and w/o suspended time 2463 */ 2464 String printTime() { 2465 StringBuilder sb = new StringBuilder(); 2466 sb.append(" rt=").append(SystemClock.uptimeMillis()); 2467 sb.append("/").append(SystemClock.elapsedRealtime()); 2468 return sb.toString(); 2469 } 2470 2471 /** 2472 * Return the additional string to be logged by LogRec, default 2473 * 2474 * @param msg that was processed 2475 * @return information to be logged as a String 2476 */ 2477 protected String getLogRecString(Message msg) { 2478 WifiConfiguration config; 2479 Long now; 2480 String report; 2481 String key; 2482 StringBuilder sb = new StringBuilder(); 2483 if (mScreenOn) { 2484 sb.append("!"); 2485 } 2486 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2487 sb.append("(").append(messageHandlingStatus).append(")"); 2488 } 2489 sb.append(smToString(msg)); 2490 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2491 sb.append(" uid=" + msg.sendingUid); 2492 } 2493 switch (msg.what) { 2494 case CMD_START_SCAN: 2495 now = System.currentTimeMillis(); 2496 sb.append(" "); 2497 sb.append(Integer.toString(msg.arg1)); 2498 sb.append(" "); 2499 sb.append(Integer.toString(msg.arg2)); 2500 sb.append(" ic="); 2501 sb.append(Integer.toString(sScanAlarmIntentCount)); 2502 if (msg.obj != null) { 2503 Bundle bundle = (Bundle)msg.obj; 2504 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2505 if (request != 0) { 2506 sb.append(" proc(ms):").append(now - request); 2507 } 2508 } 2509 if (mIsScanOngoing) sb.append(" onGoing"); 2510 if (mIsFullScanOngoing) sb.append(" full"); 2511 if (lastStartScanTimeStamp != 0) { 2512 sb.append(" started:").append(lastStartScanTimeStamp); 2513 sb.append(",").append(now - lastStartScanTimeStamp); 2514 } 2515 if (lastScanDuration != 0) { 2516 sb.append(" dur:").append(lastScanDuration); 2517 } 2518 sb.append(" cnt=").append(mDelayedScanCounter); 2519 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2520 sb.append(" f=").append(mWifiInfo.getFrequency()); 2521 sb.append(" sc=").append(mWifiInfo.score); 2522 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2523 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2524 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2525 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2526 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2527 if (lastScanFreqs != null) { 2528 sb.append(" list=").append(lastScanFreqs); 2529 } else { 2530 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2531 } 2532 report = reportOnTime(); 2533 if (report != null) { 2534 sb.append(" ").append(report); 2535 } 2536 break; 2537 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2538 sb.append(" "); 2539 sb.append(Integer.toString(msg.arg1)); 2540 sb.append(" "); 2541 sb.append(Integer.toString(msg.arg2)); 2542 sb.append(printTime()); 2543 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2544 if (stateChangeResult != null) { 2545 sb.append(stateChangeResult.toString()); 2546 } 2547 break; 2548 case WifiManager.SAVE_NETWORK: 2549 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2550 sb.append(" "); 2551 sb.append(Integer.toString(msg.arg1)); 2552 sb.append(" "); 2553 sb.append(Integer.toString(msg.arg2)); 2554 if (lastSavedConfigurationAttempt != null) { 2555 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2556 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2557 if (lastSavedConfigurationAttempt.hiddenSSID) { 2558 sb.append(" hidden"); 2559 } 2560 if (lastSavedConfigurationAttempt.preSharedKey != null 2561 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2562 sb.append(" hasPSK"); 2563 } 2564 if (lastSavedConfigurationAttempt.ephemeral) { 2565 sb.append(" ephemeral"); 2566 } 2567 if (lastSavedConfigurationAttempt.selfAdded) { 2568 sb.append(" selfAdded"); 2569 } 2570 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2571 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2572 } 2573 break; 2574 case WifiManager.FORGET_NETWORK: 2575 sb.append(" "); 2576 sb.append(Integer.toString(msg.arg1)); 2577 sb.append(" "); 2578 sb.append(Integer.toString(msg.arg2)); 2579 if (lastForgetConfigurationAttempt != null) { 2580 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2581 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2582 if (lastForgetConfigurationAttempt.hiddenSSID) { 2583 sb.append(" hidden"); 2584 } 2585 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2586 sb.append(" hasPSK"); 2587 } 2588 if (lastForgetConfigurationAttempt.ephemeral) { 2589 sb.append(" ephemeral"); 2590 } 2591 if (lastForgetConfigurationAttempt.selfAdded) { 2592 sb.append(" selfAdded"); 2593 } 2594 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2595 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2596 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2597 } 2598 break; 2599 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2600 sb.append(" "); 2601 sb.append(Integer.toString(msg.arg1)); 2602 sb.append(" "); 2603 sb.append(Integer.toString(msg.arg2)); 2604 String bssid = (String)msg.obj; 2605 if (bssid != null && bssid.length()>0) { 2606 sb.append(" "); 2607 sb.append(bssid); 2608 } 2609 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2610 sb.append(printTime()); 2611 break; 2612 case WifiMonitor.SCAN_RESULTS_EVENT: 2613 sb.append(" "); 2614 sb.append(Integer.toString(msg.arg1)); 2615 sb.append(" "); 2616 sb.append(Integer.toString(msg.arg2)); 2617 if (mScanResults != null) { 2618 sb.append(" found="); 2619 sb.append(mScanResults.size()); 2620 } 2621 sb.append(" known=").append(mNumScanResultsKnown); 2622 sb.append(" got=").append(mNumScanResultsReturned); 2623 if (lastScanDuration != 0) { 2624 sb.append(" dur:").append(lastScanDuration); 2625 } 2626 if (mOnTime != 0) { 2627 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2628 sb.append(",").append(mOnTime); 2629 } 2630 if (mTxTime != 0) { 2631 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2632 sb.append(",").append(mTxTime); 2633 } 2634 if (mRxTime != 0) { 2635 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2636 sb.append(",").append(mRxTime); 2637 } 2638 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2639 sb.append(String.format(" con=%d", mConnectionRequests)); 2640 key = mWifiConfigStore.getLastSelectedConfiguration(); 2641 if (key != null) { 2642 sb.append(" last=").append(key); 2643 } 2644 break; 2645 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2646 sb.append(" "); 2647 sb.append(Integer.toString(msg.arg1)); 2648 sb.append(" "); 2649 sb.append(Integer.toString(msg.arg2)); 2650 sb.append(" ").append(mLastBssid); 2651 sb.append(" nid=").append(mLastNetworkId); 2652 config = getCurrentWifiConfiguration(); 2653 if (config != null) { 2654 sb.append(" ").append(config.configKey()); 2655 } 2656 sb.append(printTime()); 2657 key = mWifiConfigStore.getLastSelectedConfiguration(); 2658 if (key != null) { 2659 sb.append(" last=").append(key); 2660 } 2661 break; 2662 case CMD_TARGET_BSSID: 2663 case CMD_ASSOCIATED_BSSID: 2664 sb.append(" "); 2665 sb.append(Integer.toString(msg.arg1)); 2666 sb.append(" "); 2667 sb.append(Integer.toString(msg.arg2)); 2668 if (msg.obj != null) { 2669 sb.append(" BSSID=").append((String)msg.obj); 2670 } 2671 if (mTargetRoamBSSID != null) { 2672 sb.append(" Target=").append(mTargetRoamBSSID); 2673 } 2674 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2675 sb.append(printTime()); 2676 break; 2677 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2678 if (msg.obj != null) { 2679 sb.append(" ").append((String)msg.obj); 2680 } 2681 sb.append(" nid=").append(msg.arg1); 2682 sb.append(" reason=").append(msg.arg2); 2683 if (mLastBssid != null) { 2684 sb.append(" lastbssid=").append(mLastBssid); 2685 } 2686 if (mWifiInfo.getFrequency() != -1) { 2687 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2688 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2689 } 2690 if (linkDebouncing) { 2691 sb.append(" debounce"); 2692 } 2693 sb.append(printTime()); 2694 break; 2695 case WifiMonitor.SSID_TEMP_DISABLED: 2696 case WifiMonitor.SSID_REENABLED: 2697 sb.append(" nid=").append(msg.arg1); 2698 if (msg.obj != null) { 2699 sb.append(" ").append((String)msg.obj); 2700 } 2701 config = getCurrentWifiConfiguration(); 2702 if (config != null) { 2703 sb.append(" cur=").append(config.configKey()); 2704 sb.append(" ajst=").append(config.autoJoinStatus); 2705 if (config.selfAdded) { 2706 sb.append(" selfAdded"); 2707 } 2708 if (config.status != 0) { 2709 sb.append(" st=").append(config.status); 2710 sb.append(" rs=").append(config.disableReason); 2711 } 2712 if (config.lastConnected != 0) { 2713 now = System.currentTimeMillis(); 2714 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2715 } 2716 if (mLastBssid != null) { 2717 sb.append(" lastbssid=").append(mLastBssid); 2718 } 2719 if (mWifiInfo.getFrequency() != -1) { 2720 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2721 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2722 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2723 } 2724 } 2725 sb.append(printTime()); 2726 break; 2727 case CMD_RSSI_POLL: 2728 case CMD_UNWANTED_NETWORK: 2729 case WifiManager.RSSI_PKTCNT_FETCH: 2730 sb.append(" "); 2731 sb.append(Integer.toString(msg.arg1)); 2732 sb.append(" "); 2733 sb.append(Integer.toString(msg.arg2)); 2734 if (mWifiInfo.getSSID() != null) 2735 if (mWifiInfo.getSSID() != null) 2736 sb.append(" ").append(mWifiInfo.getSSID()); 2737 if (mWifiInfo.getBSSID() != null) 2738 sb.append(" ").append(mWifiInfo.getBSSID()); 2739 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2740 sb.append(" f=").append(mWifiInfo.getFrequency()); 2741 sb.append(" sc=").append(mWifiInfo.score); 2742 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2743 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2744 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2745 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2746 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2747 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2748 report = reportOnTime(); 2749 if (report != null) { 2750 sb.append(" ").append(report); 2751 } 2752 if (wifiScoringReport != null) { 2753 sb.append(wifiScoringReport); 2754 } 2755 break; 2756 case CMD_AUTO_CONNECT: 2757 case WifiManager.CONNECT_NETWORK: 2758 sb.append(" "); 2759 sb.append(Integer.toString(msg.arg1)); 2760 sb.append(" "); 2761 sb.append(Integer.toString(msg.arg2)); 2762 config = (WifiConfiguration) msg.obj; 2763 if (config != null) { 2764 sb.append(" ").append(config.configKey()); 2765 if (config.visibility != null) { 2766 sb.append(" ").append(config.visibility.toString()); 2767 } 2768 } 2769 if (mTargetRoamBSSID != null) { 2770 sb.append(" ").append(mTargetRoamBSSID); 2771 } 2772 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2773 sb.append(printTime()); 2774 config = getCurrentWifiConfiguration(); 2775 if (config != null) { 2776 sb.append(config.configKey()); 2777 if (config.visibility != null) { 2778 sb.append(" ").append(config.visibility.toString()); 2779 } 2780 } 2781 break; 2782 case CMD_AUTO_ROAM: 2783 sb.append(" "); 2784 sb.append(Integer.toString(msg.arg1)); 2785 sb.append(" "); 2786 sb.append(Integer.toString(msg.arg2)); 2787 ScanResult result = (ScanResult)msg.obj; 2788 if (result != null) { 2789 now = System.currentTimeMillis(); 2790 sb.append(" bssid=").append(result.BSSID); 2791 sb.append(" rssi=").append(result.level); 2792 sb.append(" freq=").append(result.frequency); 2793 if (result.seen > 0 && result.seen < now) { 2794 sb.append(" seen=").append(now - result.seen); 2795 } else { 2796 // Somehow the timestamp for this scan result is inconsistent 2797 sb.append(" !seen=").append(result.seen); 2798 } 2799 } 2800 if (mTargetRoamBSSID != null) { 2801 sb.append(" ").append(mTargetRoamBSSID); 2802 } 2803 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2804 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 2805 sb.append(printTime()); 2806 break; 2807 case CMD_ADD_OR_UPDATE_NETWORK: 2808 sb.append(" "); 2809 sb.append(Integer.toString(msg.arg1)); 2810 sb.append(" "); 2811 sb.append(Integer.toString(msg.arg2)); 2812 if (msg.obj != null) { 2813 config = (WifiConfiguration)msg.obj; 2814 sb.append(" ").append(config.configKey()); 2815 sb.append(" prio=").append(config.priority); 2816 sb.append(" status=").append(config.status); 2817 if (config.BSSID != null) { 2818 sb.append(" ").append(config.BSSID); 2819 } 2820 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 2821 if (curConfig != null) { 2822 if (curConfig.configKey().equals(config.configKey())) { 2823 sb.append(" is current"); 2824 } else { 2825 sb.append(" current=").append(curConfig.configKey()); 2826 sb.append(" prio=").append(curConfig.priority); 2827 sb.append(" status=").append(curConfig.status); 2828 } 2829 } 2830 } 2831 break; 2832 case WifiManager.DISABLE_NETWORK: 2833 case CMD_ENABLE_NETWORK: 2834 sb.append(" "); 2835 sb.append(Integer.toString(msg.arg1)); 2836 sb.append(" "); 2837 sb.append(Integer.toString(msg.arg2)); 2838 key = mWifiConfigStore.getLastSelectedConfiguration(); 2839 if (key != null) { 2840 sb.append(" last=").append(key); 2841 } 2842 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 2843 if (config != null && (key == null || !config.configKey().equals(key))) { 2844 sb.append(" target=").append(key); 2845 } 2846 break; 2847 case CMD_GET_CONFIGURED_NETWORKS: 2848 sb.append(" "); 2849 sb.append(Integer.toString(msg.arg1)); 2850 sb.append(" "); 2851 sb.append(Integer.toString(msg.arg2)); 2852 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 2853 break; 2854 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 2855 sb.append(" "); 2856 sb.append(Integer.toString(msg.arg1)); 2857 sb.append(" "); 2858 sb.append(Integer.toString(msg.arg2)); 2859 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2860 sb.append(",").append(mWifiInfo.txBad); 2861 sb.append(",").append(mWifiInfo.txRetries); 2862 break; 2863 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 2864 sb.append(" "); 2865 sb.append(Integer.toString(msg.arg1)); 2866 sb.append(" "); 2867 sb.append(Integer.toString(msg.arg2)); 2868 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 2869 sb.append(" OK "); 2870 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 2871 sb.append(" FAIL "); 2872 } 2873 if (mLinkProperties != null) { 2874 if (mLinkProperties.hasIPv4Address()) { 2875 sb.append(" v4"); 2876 } 2877 if (mLinkProperties.hasGlobalIPv6Address()) { 2878 sb.append(" v6"); 2879 } 2880 if (mLinkProperties.hasIPv4DefaultRoute()) { 2881 sb.append(" v4r"); 2882 } 2883 if (mLinkProperties.hasIPv6DefaultRoute()) { 2884 sb.append(" v6r"); 2885 } 2886 if (mLinkProperties.hasIPv4DnsServer()) { 2887 sb.append(" v4dns"); 2888 } 2889 if (mLinkProperties.hasIPv6DnsServer()) { 2890 sb.append(" v6dns"); 2891 } 2892 } 2893 break; 2894 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 2895 sb.append(" "); 2896 sb.append(Integer.toString(msg.arg1)); 2897 sb.append(" "); 2898 sb.append(Integer.toString(msg.arg2)); 2899 if (msg.obj != null) { 2900 NetworkInfo info = (NetworkInfo)msg.obj; 2901 NetworkInfo.State state = info.getState(); 2902 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 2903 if (state != null) { 2904 sb.append(" st=").append(state); 2905 } 2906 if (detailedState != null) { 2907 sb.append("/").append(detailedState); 2908 } 2909 } 2910 break; 2911 case CMD_IP_CONFIGURATION_LOST: 2912 int count = -1; 2913 WifiConfiguration c = getCurrentWifiConfiguration(); 2914 if (c != null) count = c.numIpConfigFailures; 2915 sb.append(" "); 2916 sb.append(Integer.toString(msg.arg1)); 2917 sb.append(" "); 2918 sb.append(Integer.toString(msg.arg2)); 2919 sb.append(" failures: "); 2920 sb.append(Integer.toString(count)); 2921 sb.append("/"); 2922 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 2923 if (mWifiInfo.getBSSID() != null) { 2924 sb.append(" ").append(mWifiInfo.getBSSID()); 2925 } 2926 if (c != null) { 2927 if (c.scanResultCache != null) { 2928 for (ScanResult r : c.scanResultCache.values()) { 2929 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 2930 sb.append(" ipfail=").append(r.numIpConfigFailures); 2931 sb.append(",st=").append(r.autoJoinStatus); 2932 } 2933 } 2934 } 2935 sb.append(" -> ajst=").append(c.autoJoinStatus); 2936 sb.append(" ").append(c.disableReason); 2937 sb.append(" txpkts=").append(mWifiInfo.txSuccess); 2938 sb.append(",").append(mWifiInfo.txBad); 2939 sb.append(",").append(mWifiInfo.txRetries); 2940 } 2941 sb.append(printTime()); 2942 sb.append(String.format(" bcn=%d", mRunningBeaconCount)); 2943 break; 2944 case CMD_UPDATE_LINKPROPERTIES: 2945 sb.append(" "); 2946 sb.append(Integer.toString(msg.arg1)); 2947 sb.append(" "); 2948 sb.append(Integer.toString(msg.arg2)); 2949 if (mLinkProperties != null) { 2950 if (mLinkProperties.hasIPv4Address()) { 2951 sb.append(" v4"); 2952 } 2953 if (mLinkProperties.hasGlobalIPv6Address()) { 2954 sb.append(" v6"); 2955 } 2956 if (mLinkProperties.hasIPv4DefaultRoute()) { 2957 sb.append(" v4r"); 2958 } 2959 if (mLinkProperties.hasIPv6DefaultRoute()) { 2960 sb.append(" v6r"); 2961 } 2962 if (mLinkProperties.hasIPv4DnsServer()) { 2963 sb.append(" v4dns"); 2964 } 2965 if (mLinkProperties.hasIPv6DnsServer()) { 2966 sb.append(" v6dns"); 2967 } 2968 } 2969 break; 2970 case CMD_SET_COUNTRY_CODE: 2971 sb.append(" "); 2972 sb.append(Integer.toString(msg.arg1)); 2973 sb.append(" "); 2974 sb.append(Integer.toString(msg.arg2)); 2975 if (msg.obj != null) { 2976 sb.append(" ").append((String)msg.obj); 2977 } 2978 break; 2979 case CMD_ROAM_WATCHDOG_TIMER: 2980 sb.append(" "); 2981 sb.append(Integer.toString(msg.arg1)); 2982 sb.append(" "); 2983 sb.append(Integer.toString(msg.arg2)); 2984 sb.append(" cur=").append(roamWatchdogCount); 2985 break; 2986 case CMD_DISCONNECTING_WATCHDOG_TIMER: 2987 sb.append(" "); 2988 sb.append(Integer.toString(msg.arg1)); 2989 sb.append(" "); 2990 sb.append(Integer.toString(msg.arg2)); 2991 sb.append(" cur=").append(disconnectingWatchdogCount); 2992 break; 2993 default: 2994 sb.append(" "); 2995 sb.append(Integer.toString(msg.arg1)); 2996 sb.append(" "); 2997 sb.append(Integer.toString(msg.arg2)); 2998 break; 2999 } 3000 3001 return sb.toString(); 3002 } 3003 3004 private void handleScreenStateChanged(boolean screenOn, boolean startBackgroundScanIfNeeded) { 3005 mScreenOn = screenOn; 3006 if (PDBG) { 3007 loge(" handleScreenStateChanged Enter: screenOn=" + screenOn 3008 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 3009 + " state " + getCurrentState().getName() 3010 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 3011 } 3012 enableRssiPolling(screenOn); 3013 if (screenOn) enableAllNetworks(); 3014 if (mUserWantsSuspendOpt.get()) { 3015 if (screenOn) { 3016 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 3017 } else { 3018 // Allow 2s for suspend optimizations to be set 3019 mSuspendWakeLock.acquire(2000); 3020 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 3021 } 3022 } 3023 mScreenBroadcastReceived.set(true); 3024 3025 getWifiLinkLayerStats(false); 3026 mOnTimeScreenStateChange = mOnTime; 3027 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 3028 mEnableBackgroundScan = false; 3029 cancelDelayedScan(); 3030 3031 if (screenOn) { 3032 setScanAlarm(false); 3033 clearBlacklist(); 3034 3035 fullBandConnectedTimeIntervalMilli = mWifiConfigStore.associatedPartialScanPeriodMilli; 3036 // In either Disconnectedstate or ConnectedState, 3037 // start the scan alarm so as to enable autojoin 3038 if (getCurrentState() == mConnectedState 3039 && mWifiConfigStore.enableAutoJoinScanWhenAssociated) { 3040 // Scan after 500ms 3041 startDelayedScan(500, null, null); 3042 } else if (getCurrentState() == mDisconnectedState) { 3043 // Scan after 200ms 3044 startDelayedScan(200, null, null); 3045 } 3046 } else if (startBackgroundScanIfNeeded) { 3047 // Screen Off and Disconnected and chipset doesn't support scan offload 3048 // => start scan alarm 3049 // Screen Off and Disconnected and chipset does support scan offload 3050 // => will use scan offload (i.e. background scan) 3051 if (!mBackgroundScanSupported) { 3052 setScanAlarm(true); 3053 } else { 3054 mEnableBackgroundScan = true; 3055 } 3056 } 3057 if (DBG) logd("backgroundScan enabled=" + mEnableBackgroundScan 3058 + " startBackgroundScanIfNeeded:" + startBackgroundScanIfNeeded); 3059 if (startBackgroundScanIfNeeded) { 3060 // to scan for them in background, we need all networks enabled 3061 enableBackgroundScan(mEnableBackgroundScan); 3062 } 3063 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 3064 } 3065 3066 private void checkAndSetConnectivityInstance() { 3067 if (mCm == null) { 3068 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 3069 } 3070 } 3071 3072 private boolean startTethering(ArrayList<String> available) { 3073 3074 boolean wifiAvailable = false; 3075 3076 checkAndSetConnectivityInstance(); 3077 3078 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3079 3080 for (String intf : available) { 3081 for (String regex : wifiRegexs) { 3082 if (intf.matches(regex)) { 3083 3084 InterfaceConfiguration ifcg = null; 3085 try { 3086 ifcg = mNwService.getInterfaceConfig(intf); 3087 if (ifcg != null) { 3088 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 3089 ifcg.setLinkAddress(new LinkAddress( 3090 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 3091 ifcg.setInterfaceUp(); 3092 3093 mNwService.setInterfaceConfig(intf, ifcg); 3094 } 3095 } catch (Exception e) { 3096 loge("Error configuring interface " + intf + ", :" + e); 3097 return false; 3098 } 3099 3100 if(mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3101 loge("Error tethering on " + intf); 3102 return false; 3103 } 3104 mTetherInterfaceName = intf; 3105 return true; 3106 } 3107 } 3108 } 3109 // We found no interfaces to tether 3110 return false; 3111 } 3112 3113 private void stopTethering() { 3114 3115 checkAndSetConnectivityInstance(); 3116 3117 /* Clear the interface config to allow dhcp correctly configure new 3118 ip settings */ 3119 InterfaceConfiguration ifcg = null; 3120 try { 3121 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 3122 if (ifcg != null) { 3123 ifcg.setLinkAddress( 3124 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 3125 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 3126 } 3127 } catch (Exception e) { 3128 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 3129 } 3130 3131 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 3132 loge("Untether initiate failed!"); 3133 } 3134 } 3135 3136 private boolean isWifiTethered(ArrayList<String> active) { 3137 3138 checkAndSetConnectivityInstance(); 3139 3140 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 3141 for (String intf : active) { 3142 for (String regex : wifiRegexs) { 3143 if (intf.matches(regex)) { 3144 return true; 3145 } 3146 } 3147 } 3148 // We found no interfaces that are tethered 3149 return false; 3150 } 3151 3152 /** 3153 * Set the country code from the system setting value, if any. 3154 */ 3155 private void setCountryCode() { 3156 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 3157 Settings.Global.WIFI_COUNTRY_CODE); 3158 if (countryCode != null && !countryCode.isEmpty()) { 3159 setCountryCode(countryCode, false); 3160 } else { 3161 //use driver default 3162 } 3163 } 3164 3165 /** 3166 * Set the frequency band from the system setting value, if any. 3167 */ 3168 private void setFrequencyBand() { 3169 int band = Settings.Global.getInt(mContext.getContentResolver(), 3170 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 3171 setFrequencyBand(band, false); 3172 } 3173 3174 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 3175 if (DBG) { 3176 log("setSuspendOptimizationsNative: " + reason + " " + enabled 3177 + " -want " + mUserWantsSuspendOpt.get() 3178 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3179 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 3180 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 3181 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 3182 } 3183 //mWifiNative.setSuspendOptimizations(enabled); 3184 3185 if (enabled) { 3186 mSuspendOptNeedsDisabled &= ~reason; 3187 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 3188 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 3189 if (DBG) { 3190 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 3191 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3192 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 3193 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 3194 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 3195 } 3196 mWifiNative.setSuspendOptimizations(true); 3197 } 3198 } else { 3199 mSuspendOptNeedsDisabled |= reason; 3200 mWifiNative.setSuspendOptimizations(false); 3201 } 3202 } 3203 3204 private void setSuspendOptimizations(int reason, boolean enabled) { 3205 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3206 if (enabled) { 3207 mSuspendOptNeedsDisabled &= ~reason; 3208 } else { 3209 mSuspendOptNeedsDisabled |= reason; 3210 } 3211 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3212 } 3213 3214 private void setWifiState(int wifiState) { 3215 final int previousWifiState = mWifiState.get(); 3216 3217 try { 3218 if (wifiState == WIFI_STATE_ENABLED) { 3219 mBatteryStats.noteWifiOn(); 3220 } else if (wifiState == WIFI_STATE_DISABLED) { 3221 mBatteryStats.noteWifiOff(); 3222 } 3223 } catch (RemoteException e) { 3224 loge("Failed to note battery stats in wifi"); 3225 } 3226 3227 mWifiState.set(wifiState); 3228 3229 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3230 3231 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3232 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3233 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3234 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3235 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3236 } 3237 3238 private void setWifiApState(int wifiApState) { 3239 final int previousWifiApState = mWifiApState.get(); 3240 3241 try { 3242 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3243 mBatteryStats.noteWifiOn(); 3244 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3245 mBatteryStats.noteWifiOff(); 3246 } 3247 } catch (RemoteException e) { 3248 loge("Failed to note battery stats in wifi"); 3249 } 3250 3251 // Update state 3252 mWifiApState.set(wifiApState); 3253 3254 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3255 3256 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3257 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3258 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3259 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3260 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3261 } 3262 3263 /* 3264 void ageOutScanResults(int age) { 3265 synchronized(mScanResultCache) { 3266 // Trim mScanResults, which prevent WifiStateMachine to return 3267 // obsolete scan results to queriers 3268 long now = System.CurrentTimeMillis(); 3269 for (int i = 0; i < mScanResults.size(); i++) { 3270 ScanResult result = mScanResults.get(i); 3271 if ((result.seen > now || (now - result.seen) > age)) { 3272 mScanResults.remove(i); 3273 } 3274 } 3275 } 3276 }*/ 3277 3278 private static final String ID_STR = "id="; 3279 private static final String BSSID_STR = "bssid="; 3280 private static final String FREQ_STR = "freq="; 3281 private static final String LEVEL_STR = "level="; 3282 private static final String TSF_STR = "tsf="; 3283 private static final String FLAGS_STR = "flags="; 3284 private static final String SSID_STR = "ssid="; 3285 private static final String DELIMITER_STR = "===="; 3286 private static final String END_STR = "####"; 3287 3288 int emptyScanResultCount = 0; 3289 3290 // Used for matching BSSID strings, at least one characteer must be a non-zero number 3291 private static Pattern mNotZero = Pattern.compile("[1-9a-fA-F]"); 3292 3293 /** 3294 * Format: 3295 * 3296 * id=1 3297 * bssid=68:7f:76:d7:1a:6e 3298 * freq=2412 3299 * level=-44 3300 * tsf=1344626243700342 3301 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3302 * ssid=zfdy 3303 * ==== 3304 * id=2 3305 * bssid=68:5f:74:d7:1a:6f 3306 * freq=5180 3307 * level=-73 3308 * tsf=1344626243700373 3309 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3310 * ssid=zuby 3311 * ==== 3312 */ 3313 private void setScanResults() { 3314 mNumScanResultsKnown = 0; 3315 mNumScanResultsReturned = 0; 3316 String bssid = ""; 3317 int level = 0; 3318 int freq = 0; 3319 long tsf = 0; 3320 String flags = ""; 3321 WifiSsid wifiSsid = null; 3322 String scanResults; 3323 String tmpResults; 3324 StringBuffer scanResultsBuf = new StringBuffer(); 3325 int sid = 0; 3326 3327 while (true) { 3328 tmpResults = mWifiNative.scanResults(sid); 3329 if (TextUtils.isEmpty(tmpResults)) break; 3330 scanResultsBuf.append(tmpResults); 3331 scanResultsBuf.append("\n"); 3332 String[] lines = tmpResults.split("\n"); 3333 sid = -1; 3334 for (int i=lines.length - 1; i >= 0; i--) { 3335 if (lines[i].startsWith(END_STR)) { 3336 break; 3337 } else if (lines[i].startsWith(ID_STR)) { 3338 try { 3339 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3340 } catch (NumberFormatException e) { 3341 // Nothing to do 3342 } 3343 break; 3344 } 3345 } 3346 if (sid == -1) break; 3347 } 3348 3349 // Age out scan results, we return all scan results found in the last 12 seconds, 3350 // and NOT all scan results since last scan. 3351 // ageOutScanResults(12000); 3352 3353 scanResults = scanResultsBuf.toString(); 3354 if (TextUtils.isEmpty(scanResults)) { 3355 emptyScanResultCount++; 3356 if (emptyScanResultCount > 10) { 3357 // If we got too many empty scan results, the current scan cache is stale, 3358 // hence clear it. 3359 mScanResults = new ArrayList<ScanResult>(); 3360 } 3361 return; 3362 } 3363 3364 emptyScanResultCount = 0; 3365 3366 // note that all these splits and substrings keep references to the original 3367 // huge string buffer while the amount we really want is generally pretty small 3368 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3369 synchronized(mScanResultCache) { 3370 mScanResults = new ArrayList<ScanResult>(); 3371 String[] lines = scanResults.split("\n"); 3372 final int bssidStrLen = BSSID_STR.length(); 3373 final int flagLen = FLAGS_STR.length(); 3374 3375 for (String line : lines) { 3376 if (line.startsWith(BSSID_STR)) { 3377 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3378 } else if (line.startsWith(FREQ_STR)) { 3379 try { 3380 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3381 } catch (NumberFormatException e) { 3382 freq = 0; 3383 } 3384 } else if (line.startsWith(LEVEL_STR)) { 3385 try { 3386 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3387 /* some implementations avoid negative values by adding 256 3388 * so we need to adjust for that here. 3389 */ 3390 if (level > 0) level -= 256; 3391 } catch(NumberFormatException e) { 3392 level = 0; 3393 } 3394 } else if (line.startsWith(TSF_STR)) { 3395 try { 3396 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3397 } catch (NumberFormatException e) { 3398 tsf = 0; 3399 } 3400 } else if (line.startsWith(FLAGS_STR)) { 3401 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3402 } else if (line.startsWith(SSID_STR)) { 3403 wifiSsid = WifiSsid.createFromAsciiEncoded( 3404 line.substring(SSID_STR.length())); 3405 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3406 Matcher match = null; 3407 if (bssid!= null) { 3408 match = mNotZero.matcher(bssid); 3409 } 3410 if (match != null && !bssid.isEmpty() && match.find()) { 3411 String ssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3412 String key = bssid + ssid; 3413 ScanResult scanResult = mScanResultCache.get(key); 3414 if (scanResult != null) { 3415 // TODO: average the RSSI, instead of overwriting it 3416 scanResult.level = level; 3417 scanResult.wifiSsid = wifiSsid; 3418 // Keep existing API 3419 scanResult.SSID = (wifiSsid != null) ? wifiSsid.toString() : 3420 WifiSsid.NONE; 3421 scanResult.capabilities = flags; 3422 scanResult.frequency = freq; 3423 scanResult.timestamp = tsf; 3424 scanResult.seen = System.currentTimeMillis(); 3425 } else { 3426 scanResult = 3427 new ScanResult( 3428 wifiSsid, bssid, flags, level, freq, tsf); 3429 scanResult.seen = System.currentTimeMillis(); 3430 mScanResultCache.put(key, scanResult); 3431 } 3432 mNumScanResultsReturned ++; // Keep track of how many scan results we got 3433 // as part of this scan's processing 3434 mScanResults.add(scanResult); 3435 } else { 3436 if (bssid != null) { 3437 loge("setScanResults obtaining null BSSID results <" 3438 + bssid + ">, discard it"); 3439 } 3440 } 3441 bssid = null; 3442 level = 0; 3443 freq = 0; 3444 tsf = 0; 3445 flags = ""; 3446 wifiSsid = null; 3447 } 3448 } 3449 } 3450 boolean attemptAutoJoin = true; 3451 SupplicantState state = mWifiInfo.getSupplicantState(); 3452 String selection = mWifiConfigStore.getLastSelectedConfiguration(); 3453 if (getCurrentState() == mRoamingState 3454 || getCurrentState() == mObtainingIpState 3455 || getCurrentState() == mScanModeState 3456 || getCurrentState() == mDisconnectingState 3457 || (getCurrentState() == mConnectedState 3458 && !mWifiConfigStore.enableAutoJoinWhenAssociated) 3459 || linkDebouncing 3460 || state == SupplicantState.ASSOCIATING 3461 || state == SupplicantState.AUTHENTICATING 3462 || state == SupplicantState.FOUR_WAY_HANDSHAKE 3463 || state == SupplicantState.GROUP_HANDSHAKE 3464 || (/* keep autojoin enabled if user has manually selected a wifi network, 3465 so as to make sure we reliably remain connected to this network */ 3466 mConnectionRequests == 0 && selection == null)) { 3467 // Dont attempt auto-joining again while we are already attempting to join 3468 // and/or obtaining Ip address 3469 attemptAutoJoin = false; 3470 } 3471 if (DBG) { 3472 if (selection == null) { 3473 selection = "<none>"; 3474 } 3475 loge("wifi setScanResults state" + getCurrentState() 3476 + " sup_state=" + state 3477 + " debouncing=" + linkDebouncing 3478 + " mConnectionRequests=" + mConnectionRequests 3479 + " selection=" + selection); 3480 } 3481 if (attemptAutoJoin) { 3482 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 3483 } 3484 // Loose last selected configuration if we have been disconnected for 5 minutes 3485 if (getDisconnectedTimeMilli() > mWifiConfigStore.wifiConfigLastSelectionHysteresis) { 3486 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 3487 } 3488 3489 if (mWifiConfigStore.enableAutoJoinWhenAssociated) { 3490 synchronized(mScanResultCache) { 3491 // AutoJoincontroller will directly acces the scan result list and update it with 3492 // ScanResult status 3493 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 3494 } 3495 } 3496 if (linkDebouncing) { 3497 // If debouncing, we dont re-select a SSID or BSSID hence 3498 // there is no need to call the network selection code 3499 // in WifiAutoJoinController, instead, 3500 // just try to reconnect to the same SSID by triggering a roam 3501 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3502 } 3503 } 3504 3505 /* 3506 * Fetch RSSI, linkspeed, and frequency on current connection 3507 */ 3508 private void fetchRssiLinkSpeedAndFrequencyNative() { 3509 int newRssi = -1; 3510 int newLinkSpeed = -1; 3511 int newFrequency = -1; 3512 3513 String signalPoll = mWifiNative.signalPoll(); 3514 3515 if (signalPoll != null) { 3516 String[] lines = signalPoll.split("\n"); 3517 for (String line : lines) { 3518 String[] prop = line.split("="); 3519 if (prop.length < 2) continue; 3520 try { 3521 if (prop[0].equals("RSSI")) { 3522 newRssi = Integer.parseInt(prop[1]); 3523 } else if (prop[0].equals("LINKSPEED")) { 3524 newLinkSpeed = Integer.parseInt(prop[1]); 3525 } else if (prop[0].equals("FREQUENCY")) { 3526 newFrequency = Integer.parseInt(prop[1]); 3527 } 3528 } catch (NumberFormatException e) { 3529 //Ignore, defaults on rssi and linkspeed are assigned 3530 } 3531 } 3532 } 3533 3534 if (PDBG) { 3535 loge("fetchRssiLinkSpeedAndFrequencyNative rssi=" 3536 + Integer.toString(newRssi) + " linkspeed=" 3537 + Integer.toString(newLinkSpeed)); 3538 } 3539 3540 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 3541 // screen out invalid values 3542 /* some implementations avoid negative values by adding 256 3543 * so we need to adjust for that here. 3544 */ 3545 if (newRssi > 0) newRssi -= 256; 3546 mWifiInfo.setRssi(newRssi); 3547 /* 3548 * Rather then sending the raw RSSI out every time it 3549 * changes, we precalculate the signal level that would 3550 * be displayed in the status bar, and only send the 3551 * broadcast if that much more coarse-grained number 3552 * changes. This cuts down greatly on the number of 3553 * broadcasts, at the cost of not informing others 3554 * interested in RSSI of all the changes in signal 3555 * level. 3556 */ 3557 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 3558 if (newSignalLevel != mLastSignalLevel) { 3559 sendRssiChangeBroadcast(newRssi); 3560 } 3561 mLastSignalLevel = newSignalLevel; 3562 } else { 3563 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 3564 } 3565 3566 if (newLinkSpeed != -1) { 3567 mWifiInfo.setLinkSpeed(newLinkSpeed); 3568 } 3569 if (newFrequency > 0) { 3570 if (ScanResult.is5GHz(newFrequency)) { 3571 mWifiConnectionStatistics.num5GhzConnected++; 3572 } 3573 if (ScanResult.is24GHz(newFrequency)) { 3574 mWifiConnectionStatistics.num24GhzConnected++; 3575 } 3576 mWifiInfo.setFrequency(newFrequency); 3577 } 3578 mWifiConfigStore.updateConfiguration(mWifiInfo); 3579 } 3580 3581 /** 3582 * Determine if we need to switch network: 3583 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 3584 * - match the uregncy of the switch versus the packet usage at the interface 3585 */ 3586 boolean shouldSwitchNetwork(int networkDelta) { 3587 int delta; 3588 if (networkDelta <= 0) { 3589 return false; 3590 } 3591 delta = networkDelta; 3592 if (mWifiInfo != null) { 3593 if (!mWifiConfigStore.enableAutoJoinWhenAssociated 3594 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 3595 // If AutoJoin while associated is not enabled, 3596 // we should never switch network when already associated 3597 delta = -1000; 3598 } else { 3599 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 3600 // TODO: at the interface. We should also discriminate between ucast and mcast, 3601 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 3602 // TODO: broadcasts 3603 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 3604 delta -= 999; 3605 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 3606 delta -= 6; 3607 } 3608 loge("WifiStateMachine shouldSwitchNetwork " 3609 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3610 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3611 + " delta " + networkDelta + " -> " + delta); 3612 } 3613 } else { 3614 loge("WifiStateMachine shouldSwitchNetwork " 3615 + " delta " + networkDelta + " -> " + delta); 3616 } 3617 if (delta > 0) { 3618 return true; 3619 } 3620 return false; 3621 } 3622 3623 // Polling has completed, hence we wont have a score anymore 3624 private void cleanWifiScore() { 3625 mWifiInfo.txBadRate = 0; 3626 mWifiInfo.txSuccessRate = 0; 3627 mWifiInfo.txRetriesRate = 0; 3628 mWifiInfo.rxSuccessRate = 0; 3629 } 3630 3631 int mBadLinkspeedcount = 0; 3632 3633 // For debug, provide information about the last scoring operation 3634 String wifiScoringReport = null; 3635 private void calculateWifiScore(WifiLinkLayerStats stats) { 3636 StringBuilder sb = new StringBuilder(); 3637 3638 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 3639 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 3640 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 3641 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3642 < mWifiConfigStore.badLinkSpeed5); 3643 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 3644 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 3645 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3646 >= mWifiConfigStore.goodLinkSpeed5); 3647 3648 if (isBadLinkspeed) { 3649 if (mBadLinkspeedcount < 6) 3650 mBadLinkspeedcount++; 3651 } else { 3652 if (mBadLinkspeedcount > 0) 3653 mBadLinkspeedcount--; 3654 } 3655 3656 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 3657 if (isGoodLinkspeed) sb.append(" gl"); 3658 3659 /** 3660 * We want to make sure that we use the 24GHz RSSI thresholds if 3661 * there are 2.4GHz scan results 3662 * otherwise we end up lowering the score based on 5GHz values 3663 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 3664 * We also might unblacklist the configuation based on 2.4GHz 3665 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 3666 */ 3667 boolean use24Thresholds = false; 3668 boolean homeNetworkBoost = false; 3669 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 3670 if (currentConfiguration != null 3671 && currentConfiguration.scanResultCache != null) { 3672 currentConfiguration.setVisibility(12000); 3673 if (currentConfiguration.visibility != null) { 3674 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 3675 && currentConfiguration.visibility.rssi24 3676 >= (currentConfiguration.visibility.rssi5-2)) { 3677 use24Thresholds = true; 3678 } 3679 } 3680 if (currentConfiguration.scanResultCache.size() <= 6 3681 && currentConfiguration.allowedKeyManagement.cardinality() == 1 3682 && currentConfiguration.allowedKeyManagement. 3683 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 3684 // A PSK network with less than 6 known BSSIDs 3685 // This is most likely a home network and thus we want to stick to wifi more 3686 homeNetworkBoost = true; 3687 } 3688 } 3689 if (homeNetworkBoost) sb.append(" hn"); 3690 if (use24Thresholds) sb.append(" u24"); 3691 3692 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 3693 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 3694 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 3695 3696 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 3697 3698 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24) 3699 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5); 3700 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24) 3701 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5); 3702 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24) 3703 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5); 3704 3705 if (isBadRSSI) sb.append(" br"); 3706 if (isLowRSSI) sb.append(" lr"); 3707 if (isHighRSSI) sb.append(" hr"); 3708 3709 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 3710 if (currentConfiguration!= null && 3711 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 3712 if (isBadRSSI) { 3713 currentConfiguration.numTicksAtBadRSSI++; 3714 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 3715 // We remained associated for a compound amount of time while passing 3716 // traffic, hence loose the corresponding user triggered disabled stats 3717 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 3718 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 3719 } 3720 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3721 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3722 } 3723 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3724 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3725 } 3726 currentConfiguration.numTicksAtBadRSSI = 0; 3727 } 3728 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3729 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 3730 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3731 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3732 score = score -5; 3733 penalizedDueToUserTriggeredDisconnect = 1; 3734 sb.append(" p1"); 3735 } 3736 } else if (isLowRSSI) { 3737 currentConfiguration.numTicksAtLowRSSI++; 3738 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 3739 // We remained associated for a compound amount of time while passing 3740 // traffic, hence loose the corresponding user triggered disabled stats 3741 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3742 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3743 } 3744 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3745 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3746 } 3747 currentConfiguration.numTicksAtLowRSSI = 0; 3748 } 3749 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3750 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3751 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3752 score = score -5; 3753 penalizedDueToUserTriggeredDisconnect = 2; 3754 sb.append(" p2"); 3755 } 3756 } else if (!isHighRSSI) { 3757 currentConfiguration.numTicksAtNotHighRSSI++; 3758 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 3759 // We remained associated for a compound amount of time while passing 3760 // traffic, hence loose the corresponding user triggered disabled stats 3761 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3762 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3763 } 3764 currentConfiguration.numTicksAtNotHighRSSI = 0; 3765 } 3766 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3767 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3768 score = score -5; 3769 penalizedDueToUserTriggeredDisconnect = 3; 3770 sb.append(" p3"); 3771 } 3772 } 3773 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 3774 currentConfiguration.numTicksAtLowRSSI, 3775 currentConfiguration.numTicksAtNotHighRSSI)); 3776 } 3777 3778 if (PDBG) { 3779 String rssiStatus = ""; 3780 if (isBadRSSI) rssiStatus += " badRSSI "; 3781 else if (isHighRSSI) rssiStatus += " highRSSI "; 3782 else if (isLowRSSI) rssiStatus += " lowRSSI "; 3783 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 3784 loge("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 3785 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 3786 + " score=" + Integer.toString(mWifiInfo.score) 3787 + rssiStatus 3788 + " -> txbadrate=" + String.format( "%.2f", mWifiInfo.txBadRate ) 3789 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3790 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 3791 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3792 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 3793 } 3794 3795 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 3796 && (isBadRSSI || isLowRSSI)) { 3797 // Link is stuck 3798 if (mWifiInfo.linkStuckCount < 5) 3799 mWifiInfo.linkStuckCount += 1; 3800 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 3801 if (PDBG) loge(" bad link -> stuck count =" 3802 + Integer.toString(mWifiInfo.linkStuckCount)); 3803 } else if (mWifiInfo.txSuccessRate > 2 || mWifiInfo.txBadRate < 0.1) { 3804 if (mWifiInfo.linkStuckCount > 0) 3805 mWifiInfo.linkStuckCount -= 1; 3806 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 3807 if (PDBG) loge(" good link -> stuck count =" 3808 + Integer.toString(mWifiInfo.linkStuckCount)); 3809 } 3810 3811 sb.append(String.format(" [%d", score)); 3812 3813 if (mWifiInfo.linkStuckCount > 1) { 3814 // Once link gets stuck for more than 3 seconds, start reducing the score 3815 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 3816 } 3817 sb.append(String.format(",%d", score)); 3818 3819 if (isBadLinkspeed) { 3820 score -= 4 ; 3821 if (PDBG) { 3822 loge(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 3823 + " score=" + Integer.toString(score)); 3824 } 3825 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 3826 score += 4; // So as bad rssi alone dont kill us 3827 } 3828 sb.append(String.format(",%d", score)); 3829 3830 if (isBadRSSI) { 3831 if (mWifiInfo.badRssiCount < 7) 3832 mWifiInfo.badRssiCount += 1; 3833 } else if (isLowRSSI) { 3834 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 3835 if (mWifiInfo.badRssiCount > 0) { 3836 // Decrement bad Rssi count 3837 mWifiInfo.badRssiCount -= 1; 3838 } 3839 } else { 3840 mWifiInfo.badRssiCount = 0; 3841 mWifiInfo.lowRssiCount = 0; 3842 } 3843 3844 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount ; 3845 sb.append(String.format(",%d", score)); 3846 3847 if (PDBG) loge(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 3848 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 3849 + " --> score " + Integer.toString(score)); 3850 3851 3852 if (isHighRSSI) { 3853 score += 5; 3854 if (PDBG) loge(" isHighRSSI ---> score=" + Integer.toString(score)); 3855 } 3856 sb.append(String.format(",%d]", score)); 3857 3858 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 3859 3860 //sanitize boundaries 3861 if (score > NetworkAgent.WIFI_BASE_SCORE) 3862 score = NetworkAgent.WIFI_BASE_SCORE; 3863 if (score < 0) 3864 score = 0; 3865 3866 //report score 3867 if (score != mWifiInfo.score) { 3868 if (DBG) { 3869 loge("calculateWifiScore() report new score " + Integer.toString(score)); 3870 } 3871 mWifiInfo.score = score; 3872 if (mNetworkAgent != null) { 3873 mNetworkAgent.sendNetworkScore(score); 3874 } 3875 } 3876 wifiScoringReport = sb.toString(); 3877 } 3878 3879 public double getTxPacketRate() { 3880 if (mWifiInfo != null) { 3881 return mWifiInfo.txSuccessRate; 3882 } 3883 return -1; 3884 } 3885 3886 public double getRxPacketRate() { 3887 if (mWifiInfo != null) { 3888 return mWifiInfo.rxSuccessRate; 3889 } 3890 return -1; 3891 } 3892 3893 /** 3894 * Fetch TX packet counters on current connection 3895 */ 3896 private void fetchPktcntNative(RssiPacketCountInfo info) { 3897 String pktcntPoll = mWifiNative.pktcntPoll(); 3898 3899 if (pktcntPoll != null) { 3900 String[] lines = pktcntPoll.split("\n"); 3901 for (String line : lines) { 3902 String[] prop = line.split("="); 3903 if (prop.length < 2) continue; 3904 try { 3905 if (prop[0].equals("TXGOOD")) { 3906 info.txgood = Integer.parseInt(prop[1]); 3907 } else if (prop[0].equals("TXBAD")) { 3908 info.txbad = Integer.parseInt(prop[1]); 3909 } 3910 } catch (NumberFormatException e) { 3911 // Ignore 3912 } 3913 } 3914 } 3915 } 3916 3917 private boolean clearIPv4Address(String iface) { 3918 try { 3919 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 3920 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 3921 mNwService.setInterfaceConfig(iface, ifcg); 3922 return true; 3923 } catch (RemoteException e) { 3924 return false; 3925 } 3926 } 3927 3928 private boolean isProvisioned(LinkProperties lp) { 3929 return lp.isProvisioned() || 3930 (mWifiConfigStore.isUsingStaticIp(mLastNetworkId) && lp.hasIPv4Address()); 3931 } 3932 3933 /** 3934 * Updates mLinkProperties by merging information from various sources. 3935 * 3936 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 3937 * netlink, static configuration, ...). When one of these sources of information has updated 3938 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 3939 * information that came from other sources. Instead, when one of those sources has new 3940 * information, we update the object that tracks the information from that source and then 3941 * call this method to apply the change to mLinkProperties. 3942 * 3943 * The information in mLinkProperties is currently obtained as follows: 3944 * - Interface name: set in the constructor. 3945 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 3946 * - IPv4 routes, DNS servers, and domains: DHCP. 3947 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 3948 * - HTTP proxy: the wifi config store. 3949 */ 3950 private void updateLinkProperties(int reason) { 3951 LinkProperties newLp = new LinkProperties(); 3952 3953 // Interface name and proxy are locally configured. 3954 newLp.setInterfaceName(mInterfaceName); 3955 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 3956 3957 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 3958 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 3959 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 3960 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 3961 newLp.addRoute(route); 3962 } 3963 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 3964 newLp.addDnsServer(dns); 3965 } 3966 3967 // IPv4 routes, DNS servers and domains come from mDhcpResults. 3968 synchronized (mDhcpResultsLock) { 3969 // Even when we're using static configuration, we don't need to look at the config 3970 // store, because static IP configuration also populates mDhcpResults. 3971 if ((mDhcpResults != null)) { 3972 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 3973 newLp.addRoute(route); 3974 } 3975 for (InetAddress dns : mDhcpResults.dnsServers) { 3976 newLp.addDnsServer(dns); 3977 } 3978 newLp.setDomains(mDhcpResults.domains); 3979 } 3980 } 3981 3982 final boolean linkChanged = !newLp.equals(mLinkProperties); 3983 final boolean wasProvisioned = isProvisioned(mLinkProperties); 3984 final boolean isProvisioned = isProvisioned(newLp); 3985 final boolean lostIPv4Provisioning = 3986 mLinkProperties.hasIPv4Address() && !newLp.hasIPv4Address(); 3987 final DetailedState detailedState = getNetworkDetailedState(); 3988 3989 if (linkChanged) { 3990 if (DBG) { 3991 log("Link configuration changed for netId: " + mLastNetworkId 3992 + " old: " + mLinkProperties + " new: " + newLp); 3993 } 3994 mLinkProperties = newLp; 3995 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 3996 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 3997 } 3998 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 3999 } 4000 4001 if (DBG) { 4002 StringBuilder sb = new StringBuilder(); 4003 sb.append("updateLinkProperties nid: " + mLastNetworkId); 4004 sb.append(" state: " + detailedState); 4005 sb.append(" reason: " + smToString(reason)); 4006 4007 if (mLinkProperties != null) { 4008 if (mLinkProperties.hasIPv4Address()) { 4009 sb.append(" v4"); 4010 } 4011 if (mLinkProperties.hasGlobalIPv6Address()) { 4012 sb.append(" v6"); 4013 } 4014 if (mLinkProperties.hasIPv4DefaultRoute()) { 4015 sb.append(" v4r"); 4016 } 4017 if (mLinkProperties.hasIPv6DefaultRoute()) { 4018 sb.append(" v6r"); 4019 } 4020 if (mLinkProperties.hasIPv4DnsServer()) { 4021 sb.append(" v4dns"); 4022 } 4023 if (mLinkProperties.hasIPv6DnsServer()) { 4024 sb.append(" v6dns"); 4025 } 4026 if (isProvisioned) { 4027 sb.append(" isprov"); 4028 } 4029 } 4030 loge(sb.toString()); 4031 } 4032 4033 // If we just configured or lost IP configuration, do the needful. 4034 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 4035 // here because those should only be called if we're attempting to connect or already 4036 // connected, whereas updateLinkProperties can be called at any time. 4037 switch (reason) { 4038 case DhcpStateMachine.DHCP_SUCCESS: 4039 case CMD_STATIC_IP_SUCCESS: 4040 // IPv4 provisioning succeded. Advance to connected state. 4041 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4042 if (!isProvisioned) { 4043 // Can never happen unless DHCP reports success but isProvisioned thinks the 4044 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 4045 // mLinkProperties is out of sync with reality, or there's a bug in this code). 4046 // TODO: disconnect here instead. If our configuration is not usable, there's no 4047 // point in staying connected, and if mLinkProperties is out of sync with 4048 // reality, that will cause problems in the future. 4049 loge("IPv4 config succeeded, but not provisioned"); 4050 } 4051 break; 4052 4053 case DhcpStateMachine.DHCP_FAILURE: 4054 // DHCP failed. If we're not already provisioned, or we had IPv4 and now lost it, 4055 // give up and disconnect. 4056 // If we're already provisioned (e.g., IPv6-only network), stay connected. 4057 if (!isProvisioned || lostIPv4Provisioning) { 4058 sendMessage(CMD_IP_CONFIGURATION_LOST); 4059 } else { 4060 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 4061 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4062 4063 // To be sure we don't get stuck with a non-working network if all we had is 4064 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 4065 // and DHCP failed). If we had an IPv4 address before, the deletion of the 4066 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 4067 // necessary for provisioning, its deletion will cause us to disconnect. 4068 // 4069 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 4070 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 4071 // not return true if we're using DHCP and don't have an IPv4 default route. So 4072 // for now it's only here for extra redundancy. However, it will increase 4073 // robustness if we move to getting IPv4 routes from netlink as well. 4074 loge("DHCP failure: provisioned, clearing IPv4 address."); 4075 if (!clearIPv4Address(mInterfaceName)) { 4076 sendMessage(CMD_IP_CONFIGURATION_LOST); 4077 } 4078 } 4079 break; 4080 4081 case CMD_STATIC_IP_FAILURE: 4082 // Static configuration was invalid, or an error occurred in applying it. Give up. 4083 sendMessage(CMD_IP_CONFIGURATION_LOST); 4084 break; 4085 4086 case CMD_UPDATE_LINKPROPERTIES: 4087 // IP addresses, DNS servers, etc. changed. Act accordingly. 4088 if (wasProvisioned && !isProvisioned) { 4089 // We no longer have a usable network configuration. Disconnect. 4090 sendMessage(CMD_IP_CONFIGURATION_LOST); 4091 } else if (!wasProvisioned && isProvisioned) { 4092 // We have a usable IPv6-only config. Advance to connected state. 4093 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 4094 } 4095 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 4096 // If anything has changed and we're already connected, send out a notification. 4097 sendLinkConfigurationChangedBroadcast(); 4098 } 4099 break; 4100 } 4101 } 4102 4103 /** 4104 * Clears all our link properties. 4105 */ 4106 private void clearLinkProperties() { 4107 // Clear the link properties obtained from DHCP and netlink. 4108 synchronized (mDhcpResultsLock) { 4109 if (mDhcpResults != null) { 4110 mDhcpResults.clear(); 4111 } 4112 } 4113 mNetlinkTracker.clearLinkProperties(); 4114 4115 // Now clear the merged link properties. 4116 mLinkProperties.clear(); 4117 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 4118 } 4119 4120 /** 4121 * try to update default route MAC address. 4122 */ 4123 private String updateDefaultRouteMacAddress(int timeout) { 4124 String address = null; 4125 for (RouteInfo route : mLinkProperties.getRoutes()) { 4126 if (route.isDefaultRoute() && route.hasGateway()) { 4127 InetAddress gateway = route.getGateway(); 4128 if (gateway instanceof Inet4Address) { 4129 if (PDBG) { 4130 loge("updateDefaultRouteMacAddress found Ipv4 default :" 4131 + gateway.getHostAddress()); 4132 } 4133 address = macAddressFromRoute(gateway.getHostAddress()); 4134 /* The gateway's MAC address is known */ 4135 if ((address == null) && (timeout > 0)) { 4136 boolean reachable = false; 4137 try { 4138 reachable = gateway.isReachable(timeout); 4139 } catch (Exception e) { 4140 loge("updateDefaultRouteMacAddress exception reaching :" 4141 + gateway.getHostAddress()); 4142 4143 } finally { 4144 if (reachable == true) { 4145 4146 address = macAddressFromRoute(gateway.getHostAddress()); 4147 if (PDBG) { 4148 loge("updateDefaultRouteMacAddress reachable (tried again) :" 4149 + gateway.getHostAddress() + " found " + address); 4150 } 4151 } 4152 } 4153 } 4154 if (address != null) { 4155 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 4156 } 4157 } 4158 } 4159 } 4160 return address; 4161 } 4162 4163 private void sendScanResultsAvailableBroadcast() { 4164 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 4165 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4166 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4167 } 4168 4169 private void sendRssiChangeBroadcast(final int newRssi) { 4170 try { 4171 mBatteryStats.noteWifiRssiChanged(newRssi); 4172 } catch (RemoteException e) { 4173 // Won't happen. 4174 } 4175 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 4176 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4177 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 4178 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4179 } 4180 4181 private void sendNetworkStateChangeBroadcast(String bssid) { 4182 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 4183 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4184 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 4185 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties (mLinkProperties)); 4186 if (bssid != null) 4187 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 4188 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 4189 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 4190 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, new WifiInfo(mWifiInfo)); 4191 } 4192 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4193 } 4194 4195 private void sendLinkConfigurationChangedBroadcast() { 4196 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 4197 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4198 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4199 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4200 } 4201 4202 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4203 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4204 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4205 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4206 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4207 } 4208 4209 /** 4210 * Record the detailed state of a network. 4211 * @param state the new {@code DetailedState} 4212 */ 4213 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4214 boolean hidden = false; 4215 4216 if (linkDebouncing || isRoaming()) { 4217 // There is generally a confusion in the system about colluding 4218 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4219 // which leads to multiple confusion. 4220 // 4221 // If link is de-bouncing or roaming, we already have an IP address 4222 // as well we were connected and are doing L2 cycles of 4223 // reconnecting or renewing IP address to check that we still have it 4224 // This L2 link flapping should ne be reflected into the Network state 4225 // which is the state of the WiFi Network visible to Layer 3 and applications 4226 // Note that once debouncing and roaming are completed, we will 4227 // set the Network state to where it should be, or leave it as unchanged 4228 // 4229 hidden = true; 4230 } 4231 if (DBG) { 4232 log("setDetailed state, old =" 4233 + mNetworkInfo.getDetailedState() + " and new state=" + state 4234 + " hidden=" + hidden); 4235 } 4236 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4237 // Always indicate that SSID has changed 4238 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4239 if (DBG) { 4240 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4241 } 4242 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4243 sendNetworkStateChangeBroadcast(null); 4244 } 4245 } 4246 if (hidden == true) { 4247 return false; 4248 } 4249 4250 if (state != mNetworkInfo.getDetailedState()) { 4251 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4252 if (mNetworkAgent != null) { 4253 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4254 } 4255 sendNetworkStateChangeBroadcast(null); 4256 return true; 4257 } 4258 return false; 4259 } 4260 4261 private DetailedState getNetworkDetailedState() { 4262 return mNetworkInfo.getDetailedState(); 4263 } 4264 4265 4266 private SupplicantState handleSupplicantStateChange(Message message) { 4267 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4268 SupplicantState state = stateChangeResult.state; 4269 // Supplicant state change 4270 // [31-13] Reserved for future use 4271 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4272 // 50023 supplicant_state_changed (custom|1|5) 4273 mWifiInfo.setSupplicantState(state); 4274 // Network id is only valid when we start connecting 4275 if (SupplicantState.isConnecting(state)) { 4276 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4277 } else { 4278 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4279 } 4280 4281 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4282 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4283 4284 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4285 4286 return state; 4287 } 4288 4289 /** 4290 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4291 * using the interface, stopping DHCP & disabling interface 4292 */ 4293 private void handleNetworkDisconnect() { 4294 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4295 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4296 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 4297 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 4298 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 4299 4300 4301 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4302 4303 stopDhcp(); 4304 4305 try { 4306 mNwService.clearInterfaceAddresses(mInterfaceName); 4307 mNwService.disableIpv6(mInterfaceName); 4308 } catch (Exception e) { 4309 loge("Failed to clear addresses or disable ipv6" + e); 4310 } 4311 4312 /* Reset data structures */ 4313 mBadLinkspeedcount = 0; 4314 mWifiInfo.reset(); 4315 linkDebouncing = false; 4316 /* Reset roaming parameters */ 4317 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4318 4319 /** 4320 * fullBandConnectedTimeIntervalMilli: 4321 * - start scans at mWifiConfigStore.associatedPartialScanPeriodMilli seconds interval 4322 * - exponentially increase to mWifiConfigStore.associatedFullScanMaxIntervalMilli 4323 * Initialize to sane value = 20 seconds 4324 */ 4325 fullBandConnectedTimeIntervalMilli = 20 * 1000; 4326 4327 setNetworkDetailedState(DetailedState.DISCONNECTED); 4328 if (mNetworkAgent != null) { 4329 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4330 mNetworkAgent = null; 4331 } 4332 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4333 4334 /* Clear network properties */ 4335 clearLinkProperties(); 4336 4337 /* Cend event to CM & network change broadcast */ 4338 sendNetworkStateChangeBroadcast(mLastBssid); 4339 4340 /* Cancel auto roam requests */ 4341 autoRoamSetBSSID(mLastNetworkId, "any"); 4342 4343 mLastBssid= null; 4344 registerDisconnected(); 4345 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4346 } 4347 4348 private void handleSupplicantConnectionLoss() { 4349 /* Socket connection can be lost when we do a graceful shutdown 4350 * or when the driver is hung. Ensure supplicant is stopped here. 4351 */ 4352 mWifiMonitor.killSupplicant(mP2pSupported); 4353 mWifiNative.closeSupplicantConnection(); 4354 sendSupplicantConnectionChangedBroadcast(false); 4355 setWifiState(WIFI_STATE_DISABLED); 4356 } 4357 4358 void handlePreDhcpSetup() { 4359 mDhcpActive = true; 4360 if (!mBluetoothConnectionActive) { 4361 /* 4362 * There are problems setting the Wi-Fi driver's power 4363 * mode to active when bluetooth coexistence mode is 4364 * enabled or sense. 4365 * <p> 4366 * We set Wi-Fi to active mode when 4367 * obtaining an IP address because we've found 4368 * compatibility issues with some routers with low power 4369 * mode. 4370 * <p> 4371 * In order for this active power mode to properly be set, 4372 * we disable coexistence mode until we're done with 4373 * obtaining an IP address. One exception is if we 4374 * are currently connected to a headset, since disabling 4375 * coexistence would interrupt that connection. 4376 */ 4377 // Disable the coexistence mode 4378 mWifiNative.setBluetoothCoexistenceMode( 4379 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4380 } 4381 4382 // Disable power save and suspend optimizations during DHCP 4383 // Note: The order here is important for now. Brcm driver changes 4384 // power settings when we control suspend mode optimizations. 4385 // TODO: Remove this comment when the driver is fixed. 4386 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4387 mWifiNative.setPowerSave(false); 4388 4389 stopBatchedScan(); 4390 WifiNative.pauseScan(); 4391 4392 // Update link layer stats 4393 getWifiLinkLayerStats(false); 4394 4395 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4396 Message msg = new Message(); 4397 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4398 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4399 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4400 msg.obj = mDhcpStateMachine; 4401 mWifiP2pChannel.sendMessage(msg); 4402 } 4403 4404 4405 void startDhcp() { 4406 if (mDhcpStateMachine == null) { 4407 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4408 mContext, WifiStateMachine.this, mInterfaceName); 4409 4410 } 4411 mDhcpStateMachine.registerForPreDhcpNotification(); 4412 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4413 } 4414 4415 void renewDhcp() { 4416 if (mDhcpStateMachine == null) { 4417 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4418 mContext, WifiStateMachine.this, mInterfaceName); 4419 4420 } 4421 mDhcpStateMachine.registerForPreDhcpNotification(); 4422 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4423 } 4424 4425 void stopDhcp() { 4426 if (mDhcpStateMachine != null) { 4427 /* In case we were in middle of DHCP operation restore back powermode */ 4428 handlePostDhcpSetup(); 4429 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4430 } 4431 } 4432 4433 void handlePostDhcpSetup() { 4434 /* Restore power save and suspend optimizations */ 4435 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4436 mWifiNative.setPowerSave(true); 4437 4438 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 4439 4440 // Set the coexistence mode back to its default value 4441 mWifiNative.setBluetoothCoexistenceMode( 4442 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4443 4444 mDhcpActive = false; 4445 4446 startBatchedScan(); 4447 WifiNative.restartScan(); 4448 } 4449 4450 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 4451 4452 if (PDBG) { 4453 loge("wifistatemachine handleIPv4Success <" + dhcpResults.toString() + ">"); 4454 loge("link address " + dhcpResults.ipAddress); 4455 } 4456 4457 synchronized (mDhcpResultsLock) { 4458 mDhcpResults = dhcpResults; 4459 } 4460 4461 Inet4Address addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 4462 if (isRoaming()) { 4463 if (addr instanceof Inet4Address) { 4464 int previousAddress = mWifiInfo.getIpAddress(); 4465 int newAddress = NetworkUtils.inetAddressToInt(addr); 4466 if (previousAddress != newAddress) { 4467 loge("handleIPv4Success, roaming and address changed" + 4468 mWifiInfo + " got: " + addr); 4469 } else { 4470 4471 } 4472 } else { 4473 loge("handleIPv4Success, roaming and didnt get an IPv4 address" + 4474 addr.toString()); 4475 } 4476 } 4477 mWifiInfo.setInetAddress(addr); 4478 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 4479 updateLinkProperties(reason); 4480 } 4481 4482 private void handleSuccessfulIpConfiguration() { 4483 mLastSignalLevel = -1; // Force update of signal strength 4484 WifiConfiguration c = getCurrentWifiConfiguration(); 4485 if (c != null) { 4486 // Reset IP failure tracking 4487 c.numConnectionFailures = 0; 4488 4489 // Tell the framework whether the newly connected network is trusted or untrusted. 4490 updateCapabilities(c); 4491 } 4492 if (c != null) { 4493 ScanResult result = getCurrentScanResult(); 4494 if (result == null) { 4495 loge("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 4496 c.configKey()); 4497 } else { 4498 // Clear the per BSSID failure count 4499 result.numIpConfigFailures = 0; 4500 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 4501 // any BSSID, even though it may already have a non zero ip failure count, 4502 // this will typically happen if the user walks away and come back to his arrea 4503 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 4504 // in supplicant for a couple of hours or a day 4505 mWifiNative.clearBlacklist(); 4506 } 4507 } 4508 } 4509 4510 private void handleIPv4Failure(int reason) { 4511 synchronized(mDhcpResultsLock) { 4512 if (mDhcpResults != null) { 4513 mDhcpResults.clear(); 4514 } 4515 } 4516 if (PDBG) { 4517 loge("wifistatemachine handleIPv4Failure"); 4518 } 4519 updateLinkProperties(reason); 4520 } 4521 4522 private void handleIpConfigurationLost() { 4523 mWifiInfo.setInetAddress(null); 4524 mWifiInfo.setMeteredHint(false); 4525 4526 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 4527 "DHCP FAILURE", mWifiInfo.getBSSID()); 4528 4529 /* DHCP times out after about 30 seconds, we do a 4530 * disconnect thru supplicant, we will let autojoin retry connecting to the network 4531 */ 4532 mWifiNative.disconnect(); 4533 } 4534 4535 /* Current design is to not set the config on a running hostapd but instead 4536 * stop and start tethering when user changes config on a running access point 4537 * 4538 * TODO: Add control channel setup through hostapd that allows changing config 4539 * on a running daemon 4540 */ 4541 private void startSoftApWithConfig(final WifiConfiguration config) { 4542 // Start hostapd on a separate thread 4543 new Thread(new Runnable() { 4544 public void run() { 4545 try { 4546 mNwService.startAccessPoint(config, mInterfaceName); 4547 } catch (Exception e) { 4548 loge("Exception in softap start " + e); 4549 try { 4550 mNwService.stopAccessPoint(mInterfaceName); 4551 mNwService.startAccessPoint(config, mInterfaceName); 4552 } catch (Exception e1) { 4553 loge("Exception in softap re-start " + e1); 4554 sendMessage(CMD_START_AP_FAILURE); 4555 return; 4556 } 4557 } 4558 if (DBG) log("Soft AP start successful"); 4559 sendMessage(CMD_START_AP_SUCCESS); 4560 } 4561 }).start(); 4562 } 4563 4564 /* 4565 * Read a MAC address in /proc/arp/table, used by WifistateMachine 4566 * so as to record MAC address of default gateway. 4567 **/ 4568 private String macAddressFromRoute(String ipAddress) { 4569 String macAddress = null; 4570 BufferedReader reader = null; 4571 try { 4572 reader = new BufferedReader(new FileReader("/proc/net/arp")); 4573 4574 // Skip over the line bearing colum titles 4575 String line = reader.readLine(); 4576 4577 while ((line = reader.readLine()) != null) { 4578 String[] tokens = line.split("[ ]+"); 4579 if (tokens.length < 6) { 4580 continue; 4581 } 4582 4583 // ARP column format is 4584 // Address HWType HWAddress Flags Mask IFace 4585 String ip = tokens[0]; 4586 String mac = tokens[3]; 4587 4588 if (ipAddress.equals(ip)) { 4589 macAddress = mac; 4590 break; 4591 } 4592 } 4593 4594 if (macAddress == null) { 4595 loge("Did not find remoteAddress {" + ipAddress + "} in " + 4596 "/proc/net/arp"); 4597 } 4598 4599 } catch (FileNotFoundException e) { 4600 loge("Could not open /proc/net/arp to lookup mac address"); 4601 } catch (IOException e) { 4602 loge("Could not read /proc/net/arp to lookup mac address"); 4603 } finally { 4604 try { 4605 if (reader != null) { 4606 reader.close(); 4607 } 4608 } catch (IOException e) { 4609 // Do nothing 4610 } 4611 } 4612 return macAddress; 4613 4614 } 4615 4616 private class WifiNetworkFactory extends NetworkFactory { 4617 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 4618 super(l, c, TAG, f); 4619 } 4620 4621 @Override 4622 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 4623 ++mConnectionRequests; 4624 } 4625 4626 @Override 4627 protected void releaseNetworkFor(NetworkRequest networkRequest) { 4628 --mConnectionRequests; 4629 } 4630 4631 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 4632 pw.println("mConnectionRequests " + mConnectionRequests); 4633 } 4634 4635 } 4636 4637 private class UntrustedWifiNetworkFactory extends NetworkFactory { 4638 private int mUntrustedReqCount; 4639 4640 public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) { 4641 super(l, c, tag, f); 4642 } 4643 4644 @Override 4645 protected void needNetworkFor(NetworkRequest networkRequest, int score) { 4646 if (!networkRequest.networkCapabilities.hasCapability( 4647 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 4648 if (++mUntrustedReqCount == 1) { 4649 mWifiAutoJoinController.setAllowUntrustedConnections(true); 4650 } 4651 } 4652 } 4653 4654 @Override 4655 protected void releaseNetworkFor(NetworkRequest networkRequest) { 4656 if (!networkRequest.networkCapabilities.hasCapability( 4657 NetworkCapabilities.NET_CAPABILITY_TRUSTED)) { 4658 if (--mUntrustedReqCount == 0) { 4659 mWifiAutoJoinController.setAllowUntrustedConnections(false); 4660 } 4661 } 4662 } 4663 4664 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 4665 pw.println("mUntrustedReqCount " + mUntrustedReqCount); 4666 } 4667 } 4668 4669 void maybeRegisterNetworkFactory() { 4670 if (mNetworkFactory == null) { 4671 checkAndSetConnectivityInstance(); 4672 if (mCm != null) { 4673 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 4674 NETWORKTYPE, mNetworkCapabilitiesFilter); 4675 mNetworkFactory.setScoreFilter(60); 4676 mNetworkFactory.register(); 4677 4678 // We can't filter untrusted network in the capabilities filter because a trusted 4679 // network would still satisfy a request that accepts untrusted ones. 4680 mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(), 4681 mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter); 4682 mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE); 4683 mUntrustedNetworkFactory.register(); 4684 } 4685 } 4686 } 4687 4688 /******************************************************** 4689 * HSM states 4690 *******************************************************/ 4691 4692 class DefaultState extends State { 4693 @Override 4694 public boolean processMessage(Message message) { 4695 logStateAndMessage(message, getClass().getSimpleName()); 4696 4697 switch (message.what) { 4698 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 4699 AsyncChannel ac = (AsyncChannel) message.obj; 4700 if (ac == mWifiP2pChannel) { 4701 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 4702 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 4703 } else { 4704 loge("WifiP2pService connection failure, error=" + message.arg1); 4705 } 4706 } else { 4707 loge("got HALF_CONNECTED for unknown channel"); 4708 } 4709 break; 4710 } 4711 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 4712 AsyncChannel ac = (AsyncChannel) message.obj; 4713 if (ac == mWifiP2pChannel) { 4714 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 4715 //TODO: Re-establish connection to state machine after a delay 4716 // mWifiP2pChannel.connect(mContext, getHandler(), 4717 // mWifiP2pManager.getMessenger()); 4718 } 4719 break; 4720 } 4721 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 4722 mBluetoothConnectionActive = (message.arg1 != 4723 BluetoothAdapter.STATE_DISCONNECTED); 4724 break; 4725 /* Synchronous call returns */ 4726 case CMD_PING_SUPPLICANT: 4727 case CMD_ENABLE_NETWORK: 4728 case CMD_ADD_OR_UPDATE_NETWORK: 4729 case CMD_REMOVE_NETWORK: 4730 case CMD_SAVE_CONFIG: 4731 replyToMessage(message, message.what, FAILURE); 4732 break; 4733 case CMD_GET_CAPABILITY_FREQ: 4734 replyToMessage(message, message.what, null); 4735 break; 4736 case CMD_GET_CONFIGURED_NETWORKS: 4737 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4738 break; 4739 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 4740 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4741 break; 4742 case CMD_ENABLE_RSSI_POLL: 4743 mEnableRssiPolling = (message.arg1 == 1); 4744 break; 4745 case CMD_SET_HIGH_PERF_MODE: 4746 if (message.arg1 == 1) { 4747 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 4748 } else { 4749 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 4750 } 4751 break; 4752 case CMD_BOOT_COMPLETED: 4753 String countryCode = mPersistedCountryCode; 4754 if (TextUtils.isEmpty(countryCode) == false) { 4755 Settings.Global.putString(mContext.getContentResolver(), 4756 Settings.Global.WIFI_COUNTRY_CODE, 4757 countryCode); 4758 // It may be that the state transition that should send this info 4759 // to the driver happened between mPersistedCountryCode getting set 4760 // and now, so simply persisting it here would mean we have sent 4761 // nothing to the driver. Send the cmd so it might be set now. 4762 int sequenceNum = mCountryCodeSequence.incrementAndGet(); 4763 sendMessageAtFrontOfQueue(CMD_SET_COUNTRY_CODE, 4764 sequenceNum, 0, countryCode); 4765 } 4766 maybeRegisterNetworkFactory(); 4767 break; 4768 case CMD_SET_BATCHED_SCAN: 4769 recordBatchedScanSettings(message.arg1, message.arg2, (Bundle)message.obj); 4770 break; 4771 case CMD_POLL_BATCHED_SCAN: 4772 handleBatchedScanPollRequest(); 4773 break; 4774 case CMD_START_NEXT_BATCHED_SCAN: 4775 startNextBatchedScan(); 4776 break; 4777 case CMD_SCREEN_STATE_CHANGED: 4778 handleScreenStateChanged(message.arg1 != 0, 4779 /* startBackgroundScanIfNeeded = */ false); 4780 break; 4781 /* Discard */ 4782 case CMD_START_SCAN: 4783 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4784 break; 4785 case CMD_START_SUPPLICANT: 4786 case CMD_STOP_SUPPLICANT: 4787 case CMD_STOP_SUPPLICANT_FAILED: 4788 case CMD_START_DRIVER: 4789 case CMD_STOP_DRIVER: 4790 case CMD_DELAYED_STOP_DRIVER: 4791 case CMD_DRIVER_START_TIMED_OUT: 4792 case CMD_START_AP: 4793 case CMD_START_AP_SUCCESS: 4794 case CMD_START_AP_FAILURE: 4795 case CMD_STOP_AP: 4796 case CMD_TETHER_STATE_CHANGE: 4797 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 4798 case CMD_DISCONNECT: 4799 case CMD_RECONNECT: 4800 case CMD_REASSOCIATE: 4801 case CMD_RELOAD_TLS_AND_RECONNECT: 4802 case WifiMonitor.SUP_CONNECTION_EVENT: 4803 case WifiMonitor.SUP_DISCONNECTION_EVENT: 4804 case WifiMonitor.NETWORK_CONNECTION_EVENT: 4805 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 4806 case WifiMonitor.SCAN_RESULTS_EVENT: 4807 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 4808 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 4809 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 4810 case WifiMonitor.WPS_OVERLAP_EVENT: 4811 case CMD_BLACKLIST_NETWORK: 4812 case CMD_CLEAR_BLACKLIST: 4813 case CMD_SET_OPERATIONAL_MODE: 4814 case CMD_SET_COUNTRY_CODE: 4815 case CMD_SET_FREQUENCY_BAND: 4816 case CMD_RSSI_POLL: 4817 case CMD_ENABLE_ALL_NETWORKS: 4818 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 4819 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 4820 /* Handled by WifiApConfigStore */ 4821 case CMD_SET_AP_CONFIG: 4822 case CMD_SET_AP_CONFIG_COMPLETED: 4823 case CMD_REQUEST_AP_CONFIG: 4824 case CMD_RESPONSE_AP_CONFIG: 4825 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 4826 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 4827 case CMD_NO_NETWORKS_PERIODIC_SCAN: 4828 case CMD_DISABLE_P2P_RSP: 4829 case WifiMonitor.SUP_REQUEST_IDENTITY: 4830 case CMD_TEST_NETWORK_DISCONNECT: 4831 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 4832 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 4833 case CMD_TARGET_BSSID: 4834 case CMD_AUTO_CONNECT: 4835 case CMD_AUTO_ROAM: 4836 case CMD_AUTO_SAVE_NETWORK: 4837 case CMD_ASSOCIATED_BSSID: 4838 case CMD_UNWANTED_NETWORK: 4839 case CMD_DISCONNECTING_WATCHDOG_TIMER: 4840 case CMD_ROAM_WATCHDOG_TIMER: 4841 case CMD_DISABLE_EPHEMERAL_NETWORK: 4842 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4843 break; 4844 case DhcpStateMachine.CMD_ON_QUIT: 4845 mDhcpStateMachine = null; 4846 break; 4847 case CMD_SET_SUSPEND_OPT_ENABLED: 4848 if (message.arg1 == 1) { 4849 mSuspendWakeLock.release(); 4850 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 4851 } else { 4852 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 4853 } 4854 break; 4855 case WifiMonitor.DRIVER_HUNG_EVENT: 4856 setSupplicantRunning(false); 4857 setSupplicantRunning(true); 4858 break; 4859 case WifiManager.CONNECT_NETWORK: 4860 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 4861 WifiManager.BUSY); 4862 break; 4863 case WifiManager.FORGET_NETWORK: 4864 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 4865 WifiManager.BUSY); 4866 break; 4867 case WifiManager.SAVE_NETWORK: 4868 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 4869 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 4870 WifiManager.BUSY); 4871 break; 4872 case WifiManager.START_WPS: 4873 replyToMessage(message, WifiManager.WPS_FAILED, 4874 WifiManager.BUSY); 4875 break; 4876 case WifiManager.CANCEL_WPS: 4877 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 4878 WifiManager.BUSY); 4879 break; 4880 case WifiManager.DISABLE_NETWORK: 4881 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 4882 WifiManager.BUSY); 4883 break; 4884 case WifiManager.RSSI_PKTCNT_FETCH: 4885 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 4886 WifiManager.BUSY); 4887 break; 4888 case CMD_GET_SUPPORTED_FEATURES: 4889 if (WifiNative.startHal()) { 4890 int featureSet = WifiNative.getSupportedFeatureSet(); 4891 replyToMessage(message, message.what, featureSet); 4892 } else { 4893 replyToMessage(message, message.what, 0); 4894 } 4895 break; 4896 case CMD_GET_LINK_LAYER_STATS: 4897 // Not supported hence reply with error message 4898 replyToMessage(message, message.what, null); 4899 break; 4900 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 4901 NetworkInfo info = (NetworkInfo) message.obj; 4902 mP2pConnected.set(info.isConnected()); 4903 break; 4904 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 4905 mTemporarilyDisconnectWifi = (message.arg1 == 1); 4906 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 4907 break; 4908 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 4909 case CMD_UPDATE_LINKPROPERTIES: 4910 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 4911 break; 4912 case CMD_IP_CONFIGURATION_SUCCESSFUL: 4913 case CMD_IP_CONFIGURATION_LOST: 4914 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4915 break; 4916 case CMD_GET_CONNECTION_STATISTICS: 4917 replyToMessage(message, message.what, mWifiConnectionStatistics); 4918 break; 4919 default: 4920 loge("Error! unhandled message" + message); 4921 break; 4922 } 4923 return HANDLED; 4924 } 4925 } 4926 4927 class InitialState extends State { 4928 @Override 4929 public void enter() { 4930 mWifiNative.unloadDriver(); 4931 4932 if (mWifiP2pChannel == null) { 4933 mWifiP2pChannel = new AsyncChannel(); 4934 mWifiP2pChannel.connect(mContext, getHandler(), 4935 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 4936 } 4937 4938 if (mWifiApConfigChannel == null) { 4939 mWifiApConfigChannel = new AsyncChannel(); 4940 WifiApConfigStore wifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 4941 mContext, getHandler()); 4942 wifiApConfigStore.loadApConfiguration(); 4943 mWifiApConfigChannel.connectSync(mContext, getHandler(), 4944 wifiApConfigStore.getMessenger()); 4945 } 4946 } 4947 @Override 4948 public boolean processMessage(Message message) { 4949 logStateAndMessage(message, getClass().getSimpleName()); 4950 switch (message.what) { 4951 case CMD_START_SUPPLICANT: 4952 if (mWifiNative.loadDriver()) { 4953 try { 4954 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 4955 } catch (Exception e) { 4956 loge("Failed to reload STA firmware " + e); 4957 // Continue 4958 } 4959 4960 try { 4961 // A runtime crash can leave the interface up and 4962 // IP addresses configured, and this affects 4963 // connectivity when supplicant starts up. 4964 // Ensure interface is down and we have no IP 4965 // addresses before a supplicant start. 4966 mNwService.setInterfaceDown(mInterfaceName); 4967 mNwService.clearInterfaceAddresses(mInterfaceName); 4968 4969 // Set privacy extensions 4970 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 4971 4972 // IPv6 is enabled only as long as access point is connected since: 4973 // - IPv6 addresses and routes stick around after disconnection 4974 // - kernel is unaware when connected and fails to start IPv6 negotiation 4975 // - kernel can start autoconfiguration when 802.1x is not complete 4976 mNwService.disableIpv6(mInterfaceName); 4977 } catch (RemoteException re) { 4978 loge("Unable to change interface settings: " + re); 4979 } catch (IllegalStateException ie) { 4980 loge("Unable to change interface settings: " + ie); 4981 } 4982 4983 /* Stop a running supplicant after a runtime restart 4984 * Avoids issues with drivers that do not handle interface down 4985 * on a running supplicant properly. 4986 */ 4987 mWifiMonitor.killSupplicant(mP2pSupported); 4988 if(mWifiNative.startSupplicant(mP2pSupported)) { 4989 setWifiState(WIFI_STATE_ENABLING); 4990 if (DBG) log("Supplicant start successful"); 4991 mWifiMonitor.startMonitoring(); 4992 transitionTo(mSupplicantStartingState); 4993 } else { 4994 loge("Failed to start supplicant!"); 4995 } 4996 } else { 4997 loge("Failed to load driver"); 4998 } 4999 break; 5000 case CMD_START_AP: 5001 if (mWifiNative.loadDriver()) { 5002 setWifiApState(WIFI_AP_STATE_ENABLING); 5003 transitionTo(mSoftApStartingState); 5004 } else { 5005 loge("Failed to load driver for softap"); 5006 } 5007 default: 5008 return NOT_HANDLED; 5009 } 5010 return HANDLED; 5011 } 5012 } 5013 5014 class SupplicantStartingState extends State { 5015 private void initializeWpsDetails() { 5016 String detail; 5017 detail = SystemProperties.get("ro.product.name", ""); 5018 if (!mWifiNative.setDeviceName(detail)) { 5019 loge("Failed to set device name " + detail); 5020 } 5021 detail = SystemProperties.get("ro.product.manufacturer", ""); 5022 if (!mWifiNative.setManufacturer(detail)) { 5023 loge("Failed to set manufacturer " + detail); 5024 } 5025 detail = SystemProperties.get("ro.product.model", ""); 5026 if (!mWifiNative.setModelName(detail)) { 5027 loge("Failed to set model name " + detail); 5028 } 5029 detail = SystemProperties.get("ro.product.model", ""); 5030 if (!mWifiNative.setModelNumber(detail)) { 5031 loge("Failed to set model number " + detail); 5032 } 5033 detail = SystemProperties.get("ro.serialno", ""); 5034 if (!mWifiNative.setSerialNumber(detail)) { 5035 loge("Failed to set serial number " + detail); 5036 } 5037 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 5038 loge("Failed to set WPS config methods"); 5039 } 5040 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 5041 loge("Failed to set primary device type " + mPrimaryDeviceType); 5042 } 5043 } 5044 5045 @Override 5046 public boolean processMessage(Message message) { 5047 logStateAndMessage(message, getClass().getSimpleName()); 5048 5049 switch(message.what) { 5050 case WifiMonitor.SUP_CONNECTION_EVENT: 5051 if (DBG) log("Supplicant connection established"); 5052 setWifiState(WIFI_STATE_ENABLED); 5053 mSupplicantRestartCount = 0; 5054 /* Reset the supplicant state to indicate the supplicant 5055 * state is not known at this time */ 5056 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5057 /* Initialize data structures */ 5058 mLastBssid = null; 5059 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 5060 mLastSignalLevel = -1; 5061 5062 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 5063 mWifiNative.enableSaveConfig(); 5064 mWifiConfigStore.loadAndEnableAllNetworks(); 5065 if (mWifiConfigStore.enableVerboseLogging > 0) { 5066 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging); 5067 } 5068 if (mWifiConfigStore.associatedPartialScanPeriodMilli < 0) { 5069 mWifiConfigStore.associatedPartialScanPeriodMilli = 0; 5070 } 5071 initializeWpsDetails(); 5072 5073 sendSupplicantConnectionChangedBroadcast(true); 5074 transitionTo(mDriverStartedState); 5075 break; 5076 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5077 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 5078 loge("Failed to setup control channel, restart supplicant"); 5079 mWifiMonitor.killSupplicant(mP2pSupported); 5080 transitionTo(mInitialState); 5081 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5082 } else { 5083 loge("Failed " + mSupplicantRestartCount + 5084 " times to start supplicant, unload driver"); 5085 mSupplicantRestartCount = 0; 5086 setWifiState(WIFI_STATE_UNKNOWN); 5087 transitionTo(mInitialState); 5088 } 5089 break; 5090 case CMD_START_SUPPLICANT: 5091 case CMD_STOP_SUPPLICANT: 5092 case CMD_START_AP: 5093 case CMD_STOP_AP: 5094 case CMD_START_DRIVER: 5095 case CMD_STOP_DRIVER: 5096 case CMD_SET_OPERATIONAL_MODE: 5097 case CMD_SET_COUNTRY_CODE: 5098 case CMD_SET_FREQUENCY_BAND: 5099 case CMD_START_PACKET_FILTERING: 5100 case CMD_STOP_PACKET_FILTERING: 5101 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5102 deferMessage(message); 5103 break; 5104 default: 5105 return NOT_HANDLED; 5106 } 5107 return HANDLED; 5108 } 5109 } 5110 5111 class SupplicantStartedState extends State { 5112 @Override 5113 public void enter() { 5114 /* Wifi is available as long as we have a connection to supplicant */ 5115 mNetworkInfo.setIsAvailable(true); 5116 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5117 5118 int defaultInterval = mContext.getResources().getInteger( 5119 R.integer.config_wifi_supplicant_scan_interval); 5120 5121 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 5122 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 5123 defaultInterval); 5124 5125 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 5126 mWifiNative.setExternalSim(true); 5127 5128 setRandomMacOui(); 5129 mWifiNative.enableAutoConnect(false); 5130 } 5131 5132 @Override 5133 public boolean processMessage(Message message) { 5134 logStateAndMessage(message, getClass().getSimpleName()); 5135 5136 switch(message.what) { 5137 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 5138 if (mP2pSupported) { 5139 transitionTo(mWaitForP2pDisableState); 5140 } else { 5141 transitionTo(mSupplicantStoppingState); 5142 } 5143 break; 5144 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 5145 loge("Connection lost, restart supplicant"); 5146 handleSupplicantConnectionLoss(); 5147 handleNetworkDisconnect(); 5148 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5149 if (mP2pSupported) { 5150 transitionTo(mWaitForP2pDisableState); 5151 } else { 5152 transitionTo(mInitialState); 5153 } 5154 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 5155 break; 5156 case WifiMonitor.SCAN_RESULTS_EVENT: 5157 maybeRegisterNetworkFactory(); // Make sure our NetworkFactory is registered 5158 closeRadioScanStats(); 5159 noteScanEnd(); 5160 setScanResults(); 5161 if (mIsFullScanOngoing || mSendScanResultsBroadcast) { 5162 /* Just updated results from full scan, let apps know about this */ 5163 sendScanResultsAvailableBroadcast(); 5164 } 5165 mSendScanResultsBroadcast = false; 5166 mIsScanOngoing = false; 5167 mIsFullScanOngoing = false; 5168 if (mBufferedScanMsg.size() > 0) 5169 sendMessage(mBufferedScanMsg.remove()); 5170 break; 5171 case CMD_PING_SUPPLICANT: 5172 boolean ok = mWifiNative.ping(); 5173 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5174 break; 5175 case CMD_GET_CAPABILITY_FREQ: 5176 String freqs = mWifiNative.getFreqCapability(); 5177 replyToMessage(message, message.what, freqs); 5178 break; 5179 case CMD_START_AP: 5180 /* Cannot start soft AP while in client mode */ 5181 loge("Failed to start soft AP with a running supplicant"); 5182 setWifiApState(WIFI_AP_STATE_FAILED); 5183 break; 5184 case CMD_SET_OPERATIONAL_MODE: 5185 mOperationalMode = message.arg1; 5186 mWifiConfigStore. 5187 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5188 break; 5189 case CMD_TARGET_BSSID: 5190 // Trying to associate to this BSSID 5191 if (message.obj != null) { 5192 mTargetRoamBSSID = (String) message.obj; 5193 } 5194 break; 5195 case CMD_GET_LINK_LAYER_STATS: 5196 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 5197 if (stats == null) { 5198 // When firmware doesnt support link layer stats, return an empty object 5199 stats = new WifiLinkLayerStats(); 5200 } 5201 replyToMessage(message, message.what, stats); 5202 break; 5203 default: 5204 return NOT_HANDLED; 5205 } 5206 return HANDLED; 5207 } 5208 5209 @Override 5210 public void exit() { 5211 mNetworkInfo.setIsAvailable(false); 5212 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 5213 } 5214 } 5215 5216 class SupplicantStoppingState extends State { 5217 @Override 5218 public void enter() { 5219 /* Send any reset commands to supplicant before shutting it down */ 5220 handleNetworkDisconnect(); 5221 if (mDhcpStateMachine != null) { 5222 mDhcpStateMachine.doQuit(); 5223 } 5224 5225 String suppState = System.getProperty("init.svc.wpa_supplicant"); 5226 if (suppState == null) suppState = "unknown"; 5227 String p2pSuppState = System.getProperty("init.svc.p2p_supplicant"); 5228 if (p2pSuppState == null) p2pSuppState = "unknown"; 5229 5230 loge("SupplicantStoppingState: stopSupplicant " 5231 + " init.svc.wpa_supplicant=" + suppState 5232 + " init.svc.p2p_supplicant=" + p2pSuppState); 5233 mWifiMonitor.stopSupplicant(); 5234 5235 /* Send ourselves a delayed message to indicate failure after a wait time */ 5236 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 5237 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 5238 setWifiState(WIFI_STATE_DISABLING); 5239 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 5240 } 5241 @Override 5242 public boolean processMessage(Message message) { 5243 logStateAndMessage(message, getClass().getSimpleName()); 5244 5245 switch(message.what) { 5246 case WifiMonitor.SUP_CONNECTION_EVENT: 5247 loge("Supplicant connection received while stopping"); 5248 break; 5249 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5250 if (DBG) log("Supplicant connection lost"); 5251 handleSupplicantConnectionLoss(); 5252 transitionTo(mInitialState); 5253 break; 5254 case CMD_STOP_SUPPLICANT_FAILED: 5255 if (message.arg1 == mSupplicantStopFailureToken) { 5256 loge("Timed out on a supplicant stop, kill and proceed"); 5257 handleSupplicantConnectionLoss(); 5258 transitionTo(mInitialState); 5259 } 5260 break; 5261 case CMD_START_SUPPLICANT: 5262 case CMD_STOP_SUPPLICANT: 5263 case CMD_START_AP: 5264 case CMD_STOP_AP: 5265 case CMD_START_DRIVER: 5266 case CMD_STOP_DRIVER: 5267 case CMD_SET_OPERATIONAL_MODE: 5268 case CMD_SET_COUNTRY_CODE: 5269 case CMD_SET_FREQUENCY_BAND: 5270 case CMD_START_PACKET_FILTERING: 5271 case CMD_STOP_PACKET_FILTERING: 5272 deferMessage(message); 5273 break; 5274 default: 5275 return NOT_HANDLED; 5276 } 5277 return HANDLED; 5278 } 5279 } 5280 5281 class DriverStartingState extends State { 5282 private int mTries; 5283 @Override 5284 public void enter() { 5285 mTries = 1; 5286 /* Send ourselves a delayed message to start driver a second time */ 5287 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5288 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5289 } 5290 @Override 5291 public boolean processMessage(Message message) { 5292 logStateAndMessage(message, getClass().getSimpleName()); 5293 5294 switch(message.what) { 5295 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5296 SupplicantState state = handleSupplicantStateChange(message); 5297 /* If suplicant is exiting out of INTERFACE_DISABLED state into 5298 * a state that indicates driver has started, it is ready to 5299 * receive driver commands 5300 */ 5301 if (SupplicantState.isDriverActive(state)) { 5302 transitionTo(mDriverStartedState); 5303 } 5304 break; 5305 case CMD_DRIVER_START_TIMED_OUT: 5306 if (message.arg1 == mDriverStartToken) { 5307 if (mTries >= 2) { 5308 loge("Failed to start driver after " + mTries); 5309 transitionTo(mDriverStoppedState); 5310 } else { 5311 loge("Driver start failed, retrying"); 5312 mWakeLock.acquire(); 5313 mWifiNative.startDriver(); 5314 mWakeLock.release(); 5315 5316 ++mTries; 5317 /* Send ourselves a delayed message to start driver again */ 5318 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5319 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5320 } 5321 } 5322 break; 5323 /* Queue driver commands & connection events */ 5324 case CMD_START_DRIVER: 5325 case CMD_STOP_DRIVER: 5326 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5327 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5328 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5329 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5330 case WifiMonitor.WPS_OVERLAP_EVENT: 5331 case CMD_SET_COUNTRY_CODE: 5332 case CMD_SET_FREQUENCY_BAND: 5333 case CMD_START_PACKET_FILTERING: 5334 case CMD_STOP_PACKET_FILTERING: 5335 case CMD_START_SCAN: 5336 case CMD_DISCONNECT: 5337 case CMD_REASSOCIATE: 5338 case CMD_RECONNECT: 5339 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5340 deferMessage(message); 5341 break; 5342 case WifiMonitor.SCAN_RESULTS_EVENT: 5343 // Loose scan results obtained in Driver Starting state, they can only confuse 5344 // the state machine 5345 break; 5346 default: 5347 return NOT_HANDLED; 5348 } 5349 return HANDLED; 5350 } 5351 } 5352 5353 class DriverStartedState extends State { 5354 @Override 5355 public void enter() { 5356 5357 if (PDBG) { 5358 loge("DriverStartedState enter"); 5359 } 5360 mIsRunning = true; 5361 mInDelayedStop = false; 5362 mDelayedStopCounter++; 5363 updateBatteryWorkSource(null); 5364 /** 5365 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 5366 * When this mode is on, some of the low-level scan parameters used by the 5367 * driver are changed to reduce interference with bluetooth 5368 */ 5369 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5370 /* set country code */ 5371 setCountryCode(); 5372 /* set frequency band of operation */ 5373 setFrequencyBand(); 5374 /* initialize network state */ 5375 setNetworkDetailedState(DetailedState.DISCONNECTED); 5376 5377 /* Remove any filtering on Multicast v6 at start */ 5378 mWifiNative.stopFilteringMulticastV6Packets(); 5379 5380 /* Reset Multicast v4 filtering state */ 5381 if (mFilteringMulticastV4Packets.get()) { 5382 mWifiNative.startFilteringMulticastV4Packets(); 5383 } else { 5384 mWifiNative.stopFilteringMulticastV4Packets(); 5385 } 5386 5387 mDhcpActive = false; 5388 5389 startBatchedScan(); 5390 5391 if (mOperationalMode != CONNECT_MODE) { 5392 mWifiNative.disconnect(); 5393 mWifiConfigStore.disableAllNetworks(); 5394 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5395 setWifiState(WIFI_STATE_DISABLED); 5396 } 5397 transitionTo(mScanModeState); 5398 } else { 5399 5400 // Status pulls in the current supplicant state and network connection state 5401 // events over the monitor connection. This helps framework sync up with 5402 // current supplicant state 5403 // TODO: actually check th supplicant status string and make sure the supplicant 5404 // is in disconnecte4d state. 5405 mWifiNative.status(); 5406 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 5407 transitionTo(mDisconnectedState); 5408 } 5409 5410 // We may have missed screen update at boot 5411 if (mScreenBroadcastReceived.get() == false) { 5412 PowerManager powerManager = (PowerManager)mContext.getSystemService( 5413 Context.POWER_SERVICE); 5414 handleScreenStateChanged(powerManager.isScreenOn(), 5415 /* startBackgroundScanIfNeeded = */ false); 5416 } else { 5417 // Set the right suspend mode settings 5418 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 5419 && mUserWantsSuspendOpt.get()); 5420 } 5421 mWifiNative.setPowerSave(true); 5422 5423 if (mP2pSupported) { 5424 if (mOperationalMode == CONNECT_MODE) { 5425 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 5426 } else { 5427 // P2P statemachine starts in disabled state, and is not enabled until 5428 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 5429 // keep it disabled. 5430 } 5431 } 5432 5433 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5434 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5435 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 5436 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5437 5438 if (PDBG) { 5439 loge("Driverstarted State enter done"); 5440 } 5441 } 5442 5443 @Override 5444 public boolean processMessage(Message message) { 5445 logStateAndMessage(message, getClass().getSimpleName()); 5446 5447 switch(message.what) { 5448 case CMD_START_SCAN: 5449 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5450 break; 5451 case CMD_SET_BATCHED_SCAN: 5452 if (recordBatchedScanSettings(message.arg1, message.arg2, 5453 (Bundle)message.obj)) { 5454 if (mBatchedScanSettings != null) { 5455 startBatchedScan(); 5456 } else { 5457 stopBatchedScan(); 5458 } 5459 } 5460 break; 5461 case CMD_SET_COUNTRY_CODE: 5462 String country = (String) message.obj; 5463 final boolean persist = (message.arg2 == 1); 5464 final int sequence = message.arg1; 5465 if (sequence != mCountryCodeSequence.get()) { 5466 if (DBG) log("set country code ignored due to sequnce num"); 5467 break; 5468 } 5469 if (DBG) log("set country code " + country); 5470 if (persist) { 5471 mPersistedCountryCode = country; 5472 Settings.Global.putString(mContext.getContentResolver(), 5473 Settings.Global.WIFI_COUNTRY_CODE, 5474 country); 5475 } 5476 country = country.toUpperCase(Locale.ROOT); 5477 if (mLastSetCountryCode == null 5478 || country.equals(mLastSetCountryCode) == false) { 5479 if (mWifiNative.setCountryCode(country)) { 5480 mLastSetCountryCode = country; 5481 } else { 5482 loge("Failed to set country code " + country); 5483 } 5484 } 5485 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5486 break; 5487 case CMD_SET_FREQUENCY_BAND: 5488 int band = message.arg1; 5489 if (DBG) log("set frequency band " + band); 5490 if (mWifiNative.setBand(band)) { 5491 5492 if (PDBG) loge("did set frequency band " + band); 5493 5494 mFrequencyBand.set(band); 5495 // Flush old data - like scan results 5496 mWifiNative.bssFlush(); 5497 // Fetch the latest scan results when frequency band is set 5498 startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 5499 5500 if (PDBG) loge("done set frequency band " + band); 5501 5502 } else { 5503 loge("Failed to set frequency band " + band); 5504 } 5505 break; 5506 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5507 mBluetoothConnectionActive = (message.arg1 != 5508 BluetoothAdapter.STATE_DISCONNECTED); 5509 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5510 break; 5511 case CMD_STOP_DRIVER: 5512 int mode = message.arg1; 5513 5514 /* Already doing a delayed stop */ 5515 if (mInDelayedStop) { 5516 if (DBG) log("Already in delayed stop"); 5517 break; 5518 } 5519 /* disconnect right now, but leave the driver running for a bit */ 5520 mWifiConfigStore.disableAllNetworks(); 5521 5522 mInDelayedStop = true; 5523 mDelayedStopCounter++; 5524 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 5525 5526 /* send regular delayed shut down */ 5527 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 5528 driverStopIntent.setPackage(this.getClass().getPackage().getName()); 5529 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 5530 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 5531 DRIVER_STOP_REQUEST, driverStopIntent, 5532 PendingIntent.FLAG_UPDATE_CURRENT); 5533 5534 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 5535 + mDriverStopDelayMs, mDriverStopIntent); 5536 break; 5537 case CMD_START_DRIVER: 5538 if (mInDelayedStop) { 5539 mInDelayedStop = false; 5540 mDelayedStopCounter++; 5541 mAlarmManager.cancel(mDriverStopIntent); 5542 if (DBG) log("Delayed stop ignored due to start"); 5543 if (mOperationalMode == CONNECT_MODE) { 5544 mWifiConfigStore.enableAllNetworks(); 5545 } 5546 } 5547 break; 5548 case CMD_DELAYED_STOP_DRIVER: 5549 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 5550 if (message.arg1 != mDelayedStopCounter) break; 5551 if (getCurrentState() != mDisconnectedState) { 5552 mWifiNative.disconnect(); 5553 handleNetworkDisconnect(); 5554 } 5555 mWakeLock.acquire(); 5556 mWifiNative.stopDriver(); 5557 mWakeLock.release(); 5558 if (mP2pSupported) { 5559 transitionTo(mWaitForP2pDisableState); 5560 } else { 5561 transitionTo(mDriverStoppingState); 5562 } 5563 break; 5564 case CMD_START_PACKET_FILTERING: 5565 if (message.arg1 == MULTICAST_V6) { 5566 mWifiNative.startFilteringMulticastV6Packets(); 5567 } else if (message.arg1 == MULTICAST_V4) { 5568 mWifiNative.startFilteringMulticastV4Packets(); 5569 } else { 5570 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 5571 } 5572 break; 5573 case CMD_STOP_PACKET_FILTERING: 5574 if (message.arg1 == MULTICAST_V6) { 5575 mWifiNative.stopFilteringMulticastV6Packets(); 5576 } else if (message.arg1 == MULTICAST_V4) { 5577 mWifiNative.stopFilteringMulticastV4Packets(); 5578 } else { 5579 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 5580 } 5581 break; 5582 case CMD_SET_SUSPEND_OPT_ENABLED: 5583 if (message.arg1 == 1) { 5584 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 5585 mSuspendWakeLock.release(); 5586 } else { 5587 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 5588 } 5589 break; 5590 case CMD_SET_HIGH_PERF_MODE: 5591 if (message.arg1 == 1) { 5592 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 5593 } else { 5594 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 5595 } 5596 break; 5597 case CMD_ENABLE_TDLS: 5598 if (message.obj != null) { 5599 String remoteAddress = (String) message.obj; 5600 boolean enable = (message.arg1 == 1); 5601 mWifiNative.startTdls(remoteAddress, enable); 5602 } 5603 break; 5604 default: 5605 return NOT_HANDLED; 5606 } 5607 return HANDLED; 5608 } 5609 @Override 5610 public void exit() { 5611 mIsRunning = false; 5612 updateBatteryWorkSource(null); 5613 mScanResults = new ArrayList<ScanResult>(); 5614 5615 stopBatchedScan(); 5616 5617 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5618 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5619 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 5620 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5621 noteScanEnd(); // wrap up any pending request. 5622 mBufferedScanMsg.clear(); 5623 5624 mLastSetCountryCode = null; 5625 } 5626 } 5627 5628 class WaitForP2pDisableState extends State { 5629 private State mTransitionToState; 5630 @Override 5631 public void enter() { 5632 switch (getCurrentMessage().what) { 5633 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5634 mTransitionToState = mInitialState; 5635 break; 5636 case CMD_DELAYED_STOP_DRIVER: 5637 mTransitionToState = mDriverStoppingState; 5638 break; 5639 case CMD_STOP_SUPPLICANT: 5640 mTransitionToState = mSupplicantStoppingState; 5641 break; 5642 default: 5643 mTransitionToState = mDriverStoppingState; 5644 break; 5645 } 5646 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 5647 } 5648 @Override 5649 public boolean processMessage(Message message) { 5650 logStateAndMessage(message, getClass().getSimpleName()); 5651 5652 switch(message.what) { 5653 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 5654 transitionTo(mTransitionToState); 5655 break; 5656 /* Defer wifi start/shut and driver commands */ 5657 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5658 case CMD_START_SUPPLICANT: 5659 case CMD_STOP_SUPPLICANT: 5660 case CMD_START_AP: 5661 case CMD_STOP_AP: 5662 case CMD_START_DRIVER: 5663 case CMD_STOP_DRIVER: 5664 case CMD_SET_OPERATIONAL_MODE: 5665 case CMD_SET_COUNTRY_CODE: 5666 case CMD_SET_FREQUENCY_BAND: 5667 case CMD_START_PACKET_FILTERING: 5668 case CMD_STOP_PACKET_FILTERING: 5669 case CMD_START_SCAN: 5670 case CMD_DISCONNECT: 5671 case CMD_REASSOCIATE: 5672 case CMD_RECONNECT: 5673 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5674 deferMessage(message); 5675 break; 5676 default: 5677 return NOT_HANDLED; 5678 } 5679 return HANDLED; 5680 } 5681 } 5682 5683 class DriverStoppingState extends State { 5684 @Override 5685 public boolean processMessage(Message message) { 5686 logStateAndMessage(message, getClass().getSimpleName()); 5687 5688 switch(message.what) { 5689 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5690 SupplicantState state = handleSupplicantStateChange(message); 5691 if (state == SupplicantState.INTERFACE_DISABLED) { 5692 transitionTo(mDriverStoppedState); 5693 } 5694 break; 5695 /* Queue driver commands */ 5696 case CMD_START_DRIVER: 5697 case CMD_STOP_DRIVER: 5698 case CMD_SET_COUNTRY_CODE: 5699 case CMD_SET_FREQUENCY_BAND: 5700 case CMD_START_PACKET_FILTERING: 5701 case CMD_STOP_PACKET_FILTERING: 5702 case CMD_START_SCAN: 5703 case CMD_DISCONNECT: 5704 case CMD_REASSOCIATE: 5705 case CMD_RECONNECT: 5706 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5707 deferMessage(message); 5708 break; 5709 default: 5710 return NOT_HANDLED; 5711 } 5712 return HANDLED; 5713 } 5714 } 5715 5716 class DriverStoppedState extends State { 5717 @Override 5718 public boolean processMessage(Message message) { 5719 logStateAndMessage(message, getClass().getSimpleName()); 5720 switch (message.what) { 5721 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5722 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 5723 SupplicantState state = stateChangeResult.state; 5724 // A WEXT bug means that we can be back to driver started state 5725 // unexpectedly 5726 if (SupplicantState.isDriverActive(state)) { 5727 transitionTo(mDriverStartedState); 5728 } 5729 break; 5730 case CMD_START_DRIVER: 5731 mWakeLock.acquire(); 5732 mWifiNative.startDriver(); 5733 mWakeLock.release(); 5734 transitionTo(mDriverStartingState); 5735 break; 5736 default: 5737 return NOT_HANDLED; 5738 } 5739 return HANDLED; 5740 } 5741 } 5742 5743 class ScanModeState extends State { 5744 private int mLastOperationMode; 5745 @Override 5746 public void enter() { 5747 mLastOperationMode = mOperationalMode; 5748 } 5749 @Override 5750 public boolean processMessage(Message message) { 5751 logStateAndMessage(message, getClass().getSimpleName()); 5752 5753 switch(message.what) { 5754 case CMD_SET_OPERATIONAL_MODE: 5755 if (message.arg1 == CONNECT_MODE) { 5756 5757 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5758 setWifiState(WIFI_STATE_ENABLED); 5759 // Load and re-enable networks when going back to enabled state 5760 // This is essential for networks to show up after restore 5761 mWifiConfigStore.loadAndEnableAllNetworks(); 5762 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 5763 } else { 5764 mWifiConfigStore.enableAllNetworks(); 5765 } 5766 5767 // Try autojoining with recent network already present in the cache 5768 // If none are found then trigger a scan which will trigger autojoin 5769 // upon reception of scan results event 5770 if (!mWifiAutoJoinController.attemptAutoJoin()) { 5771 startScan(ENABLE_WIFI, 0, null, null); 5772 } 5773 5774 // Loose last selection choice since user toggled WiFi 5775 mWifiConfigStore. 5776 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5777 5778 mOperationalMode = CONNECT_MODE; 5779 transitionTo(mDisconnectedState); 5780 } else { 5781 // Nothing to do 5782 return HANDLED; 5783 } 5784 break; 5785 // Handle scan. All the connection related commands are 5786 // handled only in ConnectModeState 5787 case CMD_START_SCAN: 5788 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5789 break; 5790 default: 5791 return NOT_HANDLED; 5792 } 5793 return HANDLED; 5794 } 5795 } 5796 5797 5798 String smToString(Message message) { 5799 return smToString(message.what); 5800 } 5801 5802 String smToString(int what) { 5803 String s = "unknown"; 5804 switch (what) { 5805 case WifiMonitor.DRIVER_HUNG_EVENT: 5806 s = "DRIVER_HUNG_EVENT"; 5807 break; 5808 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 5809 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 5810 break; 5811 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 5812 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 5813 break; 5814 case CMD_SET_FREQUENCY_BAND: 5815 s = "CMD_SET_FREQUENCY_BAND"; 5816 break; 5817 case CMD_DELAYED_NETWORK_DISCONNECT: 5818 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 5819 break; 5820 case CMD_TEST_NETWORK_DISCONNECT: 5821 s = "CMD_TEST_NETWORK_DISCONNECT"; 5822 break; 5823 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5824 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 5825 break; 5826 case CMD_DISABLE_EPHEMERAL_NETWORK: 5827 s = "CMD_DISABLE_EPHEMERAL_NETWORK"; 5828 break; 5829 case CMD_START_DRIVER: 5830 s = "CMD_START_DRIVER"; 5831 break; 5832 case CMD_STOP_DRIVER: 5833 s = "CMD_STOP_DRIVER"; 5834 break; 5835 case CMD_STOP_SUPPLICANT: 5836 s = "CMD_STOP_SUPPLICANT"; 5837 break; 5838 case CMD_STOP_SUPPLICANT_FAILED: 5839 s = "CMD_STOP_SUPPLICANT_FAILED"; 5840 break; 5841 case CMD_START_SUPPLICANT: 5842 s = "CMD_START_SUPPLICANT"; 5843 break; 5844 case CMD_REQUEST_AP_CONFIG: 5845 s = "CMD_REQUEST_AP_CONFIG"; 5846 break; 5847 case CMD_RESPONSE_AP_CONFIG: 5848 s = "CMD_RESPONSE_AP_CONFIG"; 5849 break; 5850 case CMD_TETHER_STATE_CHANGE: 5851 s = "CMD_TETHER_STATE_CHANGE"; 5852 break; 5853 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5854 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 5855 break; 5856 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5857 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 5858 break; 5859 case CMD_ADD_OR_UPDATE_NETWORK: 5860 s = "CMD_ADD_OR_UPDATE_NETWORK"; 5861 break; 5862 case CMD_REMOVE_NETWORK: 5863 s = "CMD_REMOVE_NETWORK"; 5864 break; 5865 case CMD_ENABLE_NETWORK: 5866 s = "CMD_ENABLE_NETWORK"; 5867 break; 5868 case CMD_ENABLE_ALL_NETWORKS: 5869 s = "CMD_ENABLE_ALL_NETWORKS"; 5870 break; 5871 case CMD_AUTO_CONNECT: 5872 s = "CMD_AUTO_CONNECT"; 5873 break; 5874 case CMD_AUTO_ROAM: 5875 s = "CMD_AUTO_ROAM"; 5876 break; 5877 case CMD_AUTO_SAVE_NETWORK: 5878 s = "CMD_AUTO_SAVE_NETWORK"; 5879 break; 5880 case CMD_BOOT_COMPLETED: 5881 s = "CMD_BOOT_COMPLETED"; 5882 break; 5883 case DhcpStateMachine.CMD_START_DHCP: 5884 s = "CMD_START_DHCP"; 5885 break; 5886 case DhcpStateMachine.CMD_STOP_DHCP: 5887 s = "CMD_STOP_DHCP"; 5888 break; 5889 case DhcpStateMachine.CMD_RENEW_DHCP: 5890 s = "CMD_RENEW_DHCP"; 5891 break; 5892 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5893 s = "CMD_PRE_DHCP_ACTION"; 5894 break; 5895 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5896 s = "CMD_POST_DHCP_ACTION"; 5897 break; 5898 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 5899 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 5900 break; 5901 case DhcpStateMachine.CMD_ON_QUIT: 5902 s = "CMD_ON_QUIT"; 5903 break; 5904 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5905 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 5906 break; 5907 case WifiManager.DISABLE_NETWORK: 5908 s = "WifiManager.DISABLE_NETWORK"; 5909 break; 5910 case CMD_BLACKLIST_NETWORK: 5911 s = "CMD_BLACKLIST_NETWORK"; 5912 break; 5913 case CMD_CLEAR_BLACKLIST: 5914 s = "CMD_CLEAR_BLACKLIST"; 5915 break; 5916 case CMD_SAVE_CONFIG: 5917 s = "CMD_SAVE_CONFIG"; 5918 break; 5919 case CMD_GET_CONFIGURED_NETWORKS: 5920 s = "CMD_GET_CONFIGURED_NETWORKS"; 5921 break; 5922 case CMD_GET_SUPPORTED_FEATURES: 5923 s = "CMD_GET_ADAPTORS"; 5924 break; 5925 case CMD_UNWANTED_NETWORK: 5926 s = "CMD_UNWANTED_NETWORK"; 5927 break; 5928 case CMD_NETWORK_STATUS: 5929 s = "CMD_NETWORK_STATUS"; 5930 break; 5931 case CMD_GET_LINK_LAYER_STATS: 5932 s = "CMD_GET_LINK_LAYER_STATS"; 5933 break; 5934 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5935 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 5936 break; 5937 case CMD_DISCONNECT: 5938 s = "CMD_DISCONNECT"; 5939 break; 5940 case CMD_RECONNECT: 5941 s = "CMD_RECONNECT"; 5942 break; 5943 case CMD_REASSOCIATE: 5944 s = "CMD_REASSOCIATE"; 5945 break; 5946 case CMD_GET_CONNECTION_STATISTICS: 5947 s = "CMD_GET_CONNECTION_STATISTICS"; 5948 break; 5949 case CMD_SET_HIGH_PERF_MODE: 5950 s = "CMD_SET_HIGH_PERF_MODE"; 5951 break; 5952 case CMD_SET_COUNTRY_CODE: 5953 s = "CMD_SET_COUNTRY_CODE"; 5954 break; 5955 case CMD_ENABLE_RSSI_POLL: 5956 s = "CMD_ENABLE_RSSI_POLL"; 5957 break; 5958 case CMD_RSSI_POLL: 5959 s = "CMD_RSSI_POLL"; 5960 break; 5961 case CMD_START_PACKET_FILTERING: 5962 s = "CMD_START_PACKET_FILTERING"; 5963 break; 5964 case CMD_STOP_PACKET_FILTERING: 5965 s = "CMD_STOP_PACKET_FILTERING"; 5966 break; 5967 case CMD_SET_SUSPEND_OPT_ENABLED: 5968 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 5969 break; 5970 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5971 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 5972 break; 5973 case CMD_SET_BATCHED_SCAN: 5974 s = "CMD_SET_BATCHED_SCAN"; 5975 break; 5976 case CMD_START_NEXT_BATCHED_SCAN: 5977 s = "CMD_START_NEXT_BATCHED_SCAN"; 5978 break; 5979 case CMD_POLL_BATCHED_SCAN: 5980 s = "CMD_POLL_BATCHED_SCAN"; 5981 break; 5982 case CMD_UPDATE_LINKPROPERTIES: 5983 s = "CMD_UPDATE_LINKPROPERTIES"; 5984 break; 5985 case CMD_RELOAD_TLS_AND_RECONNECT: 5986 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 5987 break; 5988 case WifiManager.CONNECT_NETWORK: 5989 s = "CONNECT_NETWORK"; 5990 break; 5991 case WifiManager.SAVE_NETWORK: 5992 s = "SAVE_NETWORK"; 5993 break; 5994 case WifiManager.FORGET_NETWORK: 5995 s = "FORGET_NETWORK"; 5996 break; 5997 case WifiMonitor.SUP_CONNECTION_EVENT: 5998 s = "SUP_CONNECTION_EVENT"; 5999 break; 6000 case WifiMonitor.SUP_DISCONNECTION_EVENT: 6001 s = "SUP_DISCONNECTION_EVENT"; 6002 break; 6003 case WifiMonitor.SCAN_RESULTS_EVENT: 6004 s = "SCAN_RESULTS_EVENT"; 6005 break; 6006 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6007 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 6008 break; 6009 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6010 s = "AUTHENTICATION_FAILURE_EVENT"; 6011 break; 6012 case WifiMonitor.SSID_TEMP_DISABLED: 6013 s = "SSID_TEMP_DISABLED"; 6014 break; 6015 case WifiMonitor.SSID_REENABLED: 6016 s = "SSID_REENABLED"; 6017 break; 6018 case WifiMonitor.WPS_SUCCESS_EVENT: 6019 s = "WPS_SUCCESS_EVENT"; 6020 break; 6021 case WifiMonitor.WPS_FAIL_EVENT: 6022 s = "WPS_FAIL_EVENT"; 6023 break; 6024 case WifiMonitor.SUP_REQUEST_IDENTITY: 6025 s = "SUP_REQUEST_IDENTITY"; 6026 break; 6027 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6028 s = "NETWORK_CONNECTION_EVENT"; 6029 break; 6030 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6031 s = "NETWORK_DISCONNECTION_EVENT"; 6032 break; 6033 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6034 s = "ASSOCIATION_REJECTION_EVENT"; 6035 break; 6036 case CMD_SET_OPERATIONAL_MODE: 6037 s = "CMD_SET_OPERATIONAL_MODE"; 6038 break; 6039 case CMD_START_SCAN: 6040 s = "CMD_START_SCAN"; 6041 break; 6042 case CMD_DISABLE_P2P_RSP: 6043 s = "CMD_DISABLE_P2P_RSP"; 6044 break; 6045 case CMD_DISABLE_P2P_REQ: 6046 s = "CMD_DISABLE_P2P_REQ"; 6047 break; 6048 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6049 s = "GOOD_LINK_DETECTED"; 6050 break; 6051 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6052 s = "POOR_LINK_DETECTED"; 6053 break; 6054 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 6055 s = "GROUP_CREATING_TIMED_OUT"; 6056 break; 6057 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6058 s = "P2P_CONNECTION_CHANGED"; 6059 break; 6060 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 6061 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 6062 break; 6063 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 6064 s = "P2P.SET_MIRACAST_MODE"; 6065 break; 6066 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 6067 s = "P2P.BLOCK_DISCOVERY"; 6068 break; 6069 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 6070 s = "P2P.SET_COUNTRY_CODE"; 6071 break; 6072 case WifiManager.CANCEL_WPS: 6073 s = "CANCEL_WPS"; 6074 break; 6075 case WifiManager.CANCEL_WPS_FAILED: 6076 s = "CANCEL_WPS_FAILED"; 6077 break; 6078 case WifiManager.CANCEL_WPS_SUCCEDED: 6079 s = "CANCEL_WPS_SUCCEDED"; 6080 break; 6081 case WifiManager.START_WPS: 6082 s = "START_WPS"; 6083 break; 6084 case WifiManager.START_WPS_SUCCEEDED: 6085 s = "START_WPS_SUCCEEDED"; 6086 break; 6087 case WifiManager.WPS_FAILED: 6088 s = "WPS_FAILED"; 6089 break; 6090 case WifiManager.WPS_COMPLETED: 6091 s = "WPS_COMPLETED"; 6092 break; 6093 case WifiManager.RSSI_PKTCNT_FETCH: 6094 s = "RSSI_PKTCNT_FETCH"; 6095 break; 6096 case CMD_IP_CONFIGURATION_LOST: 6097 s = "CMD_IP_CONFIGURATION_LOST"; 6098 break; 6099 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6100 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 6101 break; 6102 case CMD_STATIC_IP_SUCCESS: 6103 s = "CMD_STATIC_IP_SUCCESSFUL"; 6104 break; 6105 case CMD_STATIC_IP_FAILURE: 6106 s = "CMD_STATIC_IP_FAILURE"; 6107 break; 6108 case DhcpStateMachine.DHCP_SUCCESS: 6109 s = "DHCP_SUCCESS"; 6110 break; 6111 case DhcpStateMachine.DHCP_FAILURE: 6112 s = "DHCP_FAILURE"; 6113 break; 6114 case CMD_TARGET_BSSID: 6115 s = "CMD_TARGET_BSSID"; 6116 break; 6117 case CMD_ASSOCIATED_BSSID: 6118 s = "CMD_ASSOCIATED_BSSID"; 6119 break; 6120 case CMD_ROAM_WATCHDOG_TIMER: 6121 s = "CMD_ROAM_WATCHDOG_TIMER"; 6122 break; 6123 case CMD_SCREEN_STATE_CHANGED: 6124 s = "CMD_SCREEN_STATE_CHANGED"; 6125 break; 6126 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6127 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 6128 break; 6129 default: 6130 s = "what:" + Integer.toString(what); 6131 break; 6132 } 6133 return s; 6134 } 6135 6136 void registerConnected() { 6137 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6138 long now_ms = System.currentTimeMillis(); 6139 // We are switching away from this configuration, 6140 // hence record the time we were connected last 6141 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6142 if (config != null) { 6143 config.lastConnected = System.currentTimeMillis(); 6144 config.autoJoinBailedDueToLowRssi = false; 6145 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 6146 config.numConnectionFailures = 0; 6147 config.numIpConfigFailures = 0; 6148 config.numAuthFailures = 0; 6149 config.numAssociation++; 6150 } 6151 mBadLinkspeedcount = 0; 6152 } 6153 } 6154 6155 void registerDisconnected() { 6156 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6157 long now_ms = System.currentTimeMillis(); 6158 // We are switching away from this configuration, 6159 // hence record the time we were connected last 6160 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6161 if (config != null) { 6162 config.lastDisconnected = System.currentTimeMillis(); 6163 if (config.ephemeral) { 6164 // Remove ephemeral WifiConfigurations from file 6165 mWifiConfigStore.forgetNetwork(mLastNetworkId); 6166 } 6167 } 6168 } 6169 } 6170 6171 void noteWifiDisabledWhileAssociated() { 6172 // We got disabled by user while we were associated, make note of it 6173 int rssi = mWifiInfo.getRssi(); 6174 WifiConfiguration config = getCurrentWifiConfiguration(); 6175 if (getCurrentState() == mConnectedState 6176 && rssi != WifiInfo.INVALID_RSSI 6177 && config != null) { 6178 boolean is24GHz = mWifiInfo.is24GHz(); 6179 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24) 6180 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5); 6181 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24) 6182 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5); 6183 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24) 6184 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5); 6185 if (isBadRSSI) { 6186 // Take note that we got disabled while RSSI was Bad 6187 config.numUserTriggeredWifiDisableLowRSSI++; 6188 } else if (isLowRSSI) { 6189 // Take note that we got disabled while RSSI was Low 6190 config.numUserTriggeredWifiDisableBadRSSI++; 6191 } else if (!isHighRSSI) { 6192 // Take note that we got disabled while RSSI was Not high 6193 config.numUserTriggeredWifiDisableNotHighRSSI++; 6194 } 6195 } 6196 } 6197 6198 WifiConfiguration getCurrentWifiConfiguration() { 6199 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 6200 return null; 6201 } 6202 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 6203 } 6204 6205 ScanResult getCurrentScanResult() { 6206 WifiConfiguration config = getCurrentWifiConfiguration(); 6207 if (config == null) { 6208 return null; 6209 } 6210 String BSSID = mWifiInfo.getBSSID(); 6211 if (BSSID == null) { 6212 BSSID = mTargetRoamBSSID; 6213 } 6214 if (config.scanResultCache == null) { 6215 return null; 6216 } 6217 return config.scanResultCache.get(BSSID); 6218 } 6219 6220 String getCurrentBSSID() { 6221 if (linkDebouncing) { 6222 return null; 6223 } 6224 return mLastBssid; 6225 } 6226 6227 class ConnectModeState extends State { 6228 @Override 6229 public boolean processMessage(Message message) { 6230 WifiConfiguration config; 6231 int netId; 6232 boolean ok; 6233 boolean didDisconnect; 6234 String bssid; 6235 String ssid; 6236 NetworkUpdateResult result; 6237 logStateAndMessage(message, getClass().getSimpleName()); 6238 6239 switch (message.what) { 6240 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6241 didBlackListBSSID = false; 6242 bssid = (String) message.obj; 6243 if (bssid == null || TextUtils.isEmpty(bssid)) { 6244 // If BSSID is null, use the target roam BSSID 6245 bssid = mTargetRoamBSSID; 6246 } 6247 if (bssid != null) { 6248 // If we have a BSSID, tell configStore to black list it 6249 synchronized(mScanResultCache) { 6250 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 6251 (mLastNetworkId, bssid, false); 6252 } 6253 } 6254 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 6255 break; 6256 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6257 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 6258 break; 6259 case WifiMonitor.SSID_TEMP_DISABLED: 6260 case WifiMonitor.SSID_REENABLED: 6261 String substr = (String) message.obj; 6262 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 6263 "temp-disabled" : "re-enabled"; 6264 loge("ConnectModeState SSID state=" + en + " nid=" 6265 + Integer.toString(message.arg1) + " [" + substr + "]"); 6266 synchronized(mScanResultCache) { 6267 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 6268 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 6269 } 6270 break; 6271 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6272 SupplicantState state = handleSupplicantStateChange(message); 6273 // A driver/firmware hang can now put the interface in a down state. 6274 // We detect the interface going down and recover from it 6275 if (!SupplicantState.isDriverActive(state)) { 6276 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6277 handleNetworkDisconnect(); 6278 } 6279 log("Detected an interface down, restart driver"); 6280 transitionTo(mDriverStoppedState); 6281 sendMessage(CMD_START_DRIVER); 6282 break; 6283 } 6284 6285 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 6286 // when authentication times out after a successful connection, 6287 // we can figure this from the supplicant state. If supplicant 6288 // state is DISCONNECTED, but the mNetworkInfo says we are not 6289 // disconnected, we need to handle a disconnection 6290 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 6291 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 6292 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 6293 handleNetworkDisconnect(); 6294 transitionTo(mDisconnectedState); 6295 } 6296 break; 6297 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6298 if (message.arg1 == 1) { 6299 mWifiNative.disconnect(); 6300 mTemporarilyDisconnectWifi = true; 6301 } else { 6302 mWifiNative.reconnect(); 6303 mTemporarilyDisconnectWifi = false; 6304 } 6305 break; 6306 case CMD_ADD_OR_UPDATE_NETWORK: 6307 config = (WifiConfiguration) message.obj; 6308 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 6309 if (res < 0) { 6310 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6311 } else { 6312 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 6313 if (curConfig != null && config != null) { 6314 if (curConfig.priority < config.priority 6315 && config.status == WifiConfiguration.Status.ENABLED) { 6316 // Interpret this as a connect attempt 6317 // Set the last selected configuration so as to allow the system to 6318 // stick the last user choice without persisting the choice 6319 mWifiConfigStore.setLastSelectedConfiguration(res); 6320 6321 // Remember time of last connection attempt 6322 lastConnectAttempt = System.currentTimeMillis(); 6323 6324 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6325 6326 // As a courtesy to the caller, trigger a scan now 6327 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 6328 } 6329 } 6330 } 6331 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 6332 break; 6333 case CMD_REMOVE_NETWORK: 6334 ok = mWifiConfigStore.removeNetwork(message.arg1); 6335 if (!ok) { 6336 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6337 } 6338 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6339 break; 6340 case CMD_ENABLE_NETWORK: 6341 boolean others = message.arg2 == 1; 6342 // Tell autojoin the user did try to select to that network 6343 // However, do NOT persist the choice by bumping the priority of the network 6344 if (others) { 6345 mWifiAutoJoinController. 6346 updateConfigurationHistory(message.arg1, true, false); 6347 // Set the last selected configuration so as to allow the system to 6348 // stick the last user choice without persisting the choice 6349 mWifiConfigStore.setLastSelectedConfiguration(message.arg1); 6350 6351 // Remember time of last connection attempt 6352 lastConnectAttempt = System.currentTimeMillis(); 6353 6354 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6355 } 6356 // Cancel auto roam requests 6357 autoRoamSetBSSID(message.arg1, "any"); 6358 6359 ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1); 6360 if (!ok) { 6361 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6362 } 6363 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6364 break; 6365 case CMD_ENABLE_ALL_NETWORKS: 6366 long time = android.os.SystemClock.elapsedRealtime(); 6367 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 6368 mWifiConfigStore.enableAllNetworks(); 6369 mLastEnableAllNetworksTime = time; 6370 } 6371 break; 6372 case WifiManager.DISABLE_NETWORK: 6373 if (mWifiConfigStore.disableNetwork(message.arg1, 6374 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 6375 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 6376 } else { 6377 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6378 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 6379 WifiManager.ERROR); 6380 } 6381 break; 6382 case CMD_DISABLE_EPHEMERAL_NETWORK: 6383 config = mWifiConfigStore.disableEphemeralNetwork((String)message.obj); 6384 if (config != null) { 6385 if (config.networkId == mLastNetworkId) { 6386 // Disconnect and let autojoin reselect a new network 6387 sendMessage(CMD_DISCONNECT); 6388 } 6389 } 6390 break; 6391 case CMD_BLACKLIST_NETWORK: 6392 mWifiNative.addToBlacklist((String) message.obj); 6393 break; 6394 case CMD_CLEAR_BLACKLIST: 6395 mWifiNative.clearBlacklist(); 6396 break; 6397 case CMD_SAVE_CONFIG: 6398 ok = mWifiConfigStore.saveConfig(); 6399 6400 if (DBG) loge("wifistatemachine did save config " + ok); 6401 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 6402 6403 // Inform the backup manager about a data change 6404 IBackupManager ibm = IBackupManager.Stub.asInterface( 6405 ServiceManager.getService(Context.BACKUP_SERVICE)); 6406 if (ibm != null) { 6407 try { 6408 ibm.dataChanged("com.android.providers.settings"); 6409 } catch (Exception e) { 6410 // Try again later 6411 } 6412 } 6413 break; 6414 case CMD_GET_CONFIGURED_NETWORKS: 6415 replyToMessage(message, message.what, 6416 mWifiConfigStore.getConfiguredNetworks()); 6417 break; 6418 case WifiMonitor.SUP_REQUEST_IDENTITY: 6419 // Supplicant lacks credentials to connect to that network, hence black list 6420 ssid = (String) message.obj; 6421 6422 if (targetWificonfiguration != null && ssid != null 6423 && targetWificonfiguration.SSID != null 6424 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 6425 mWifiConfigStore.handleSSIDStateChange(targetWificonfiguration.networkId, 6426 false, "AUTH_FAILED no identity", null); 6427 } 6428 // Disconnect now, as we don't have any way to fullfill the supplicant request. 6429 mWifiConfigStore.setLastSelectedConfiguration 6430 (WifiConfiguration.INVALID_NETWORK_ID); 6431 mWifiNative.disconnect(); 6432 break; 6433 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 6434 logd("Received SUP_REQUEST_SIM_AUTH"); 6435 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 6436 if (requestData != null) { 6437 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 6438 handleGsmAuthRequest(requestData); 6439 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA) { 6440 handle3GAuthRequest(requestData); 6441 } 6442 } else { 6443 loge("Invalid sim auth request"); 6444 } 6445 break; 6446 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6447 replyToMessage(message, message.what, 6448 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 6449 break; 6450 /* Do a redundant disconnect without transition */ 6451 case CMD_DISCONNECT: 6452 mWifiConfigStore.setLastSelectedConfiguration 6453 (WifiConfiguration.INVALID_NETWORK_ID); 6454 mWifiNative.disconnect(); 6455 break; 6456 case CMD_RECONNECT: 6457 mWifiAutoJoinController.attemptAutoJoin(); 6458 break; 6459 case CMD_REASSOCIATE: 6460 lastConnectAttempt = System.currentTimeMillis(); 6461 mWifiNative.reassociate(); 6462 break; 6463 case CMD_RELOAD_TLS_AND_RECONNECT: 6464 if (mWifiConfigStore.needsUnlockedKeyStore()) { 6465 logd("Reconnecting to give a chance to un-connected TLS networks"); 6466 mWifiNative.disconnect(); 6467 lastConnectAttempt = System.currentTimeMillis(); 6468 mWifiNative.reconnect(); 6469 } 6470 break; 6471 case CMD_AUTO_ROAM: 6472 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 6473 return HANDLED; 6474 case CMD_AUTO_CONNECT: 6475 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 6476 * associated status to the STATUS command but somehow-someplace still thinks 6477 * it is associated and thus will ignore select/reconnect command with 6478 * following message: 6479 * "Already associated with the selected network - do nothing" 6480 * 6481 * Hence, sends a disconnect to supplicant first. 6482 */ 6483 didDisconnect = false; 6484 if (getCurrentState() != mDisconnectedState) { 6485 /** Supplicant will ignore the reconnect if we are currently associated, 6486 * hence trigger a disconnect 6487 */ 6488 didDisconnect = true; 6489 mWifiNative.disconnect(); 6490 } 6491 6492 /* connect command coming from auto-join */ 6493 config = (WifiConfiguration) message.obj; 6494 netId = message.arg1; 6495 int roam = message.arg2; 6496 loge("CMD_AUTO_CONNECT sup state " 6497 + mSupplicantStateTracker.getSupplicantStateName() 6498 + " my state " + getCurrentState().getName() 6499 + " nid=" + Integer.toString(netId) 6500 + " roam=" + Integer.toString(roam)); 6501 if (config == null) { 6502 loge("AUTO_CONNECT and no config, bail out..."); 6503 break; 6504 } 6505 6506 /* Make sure we cancel any previous roam request */ 6507 autoRoamSetBSSID(netId, config.BSSID); 6508 6509 /* Save the network config */ 6510 loge("CMD_AUTO_CONNECT will save config -> " + config.SSID 6511 + " nid=" + Integer.toString(netId)); 6512 result = mWifiConfigStore.saveNetwork(config, -1); 6513 netId = result.getNetworkId(); 6514 loge("CMD_AUTO_CONNECT did save config -> " 6515 + " nid=" + Integer.toString(netId)); 6516 6517 // Make sure the network is enabled, since supplicant will not reenable it 6518 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6519 6520 if (mWifiConfigStore.selectNetwork(netId) && 6521 mWifiNative.reconnect()) { 6522 lastConnectAttempt = System.currentTimeMillis(); 6523 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6524 config = mWifiConfigStore.getWifiConfiguration(netId); 6525 if (config != null 6526 && !mWifiConfigStore.isLastSelectedConfiguration(config)) { 6527 // If we autojoined a different config than the user selected one, 6528 // it means we could not see the last user selection, 6529 // or that the last user selection was faulty and ended up blacklisted 6530 // for some reason (in which case the user is notified with an error 6531 // message in the Wifi picker), and thus we managed to auto-join away 6532 // from the selected config. -> in that case we need to forget 6533 // the selection because we don't want to abruptly switch back to it. 6534 // 6535 // Note that the user selection is also forgotten after a period of time 6536 // during which the device has been disconnected. 6537 // The default value is 30 minutes : see the code path at bottom of 6538 // setScanResults() function. 6539 mWifiConfigStore. 6540 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6541 } 6542 mAutoRoaming = roam; 6543 if (isRoaming() || linkDebouncing) { 6544 transitionTo(mRoamingState); 6545 } else if (didDisconnect) { 6546 transitionTo(mDisconnectingState); 6547 } else { 6548 /* Already in disconnected state, nothing to change */ 6549 } 6550 } else { 6551 loge("Failed to connect config: " + config + " netId: " + netId); 6552 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6553 WifiManager.ERROR); 6554 break; 6555 } 6556 break; 6557 case WifiManager.CONNECT_NETWORK: 6558 /** 6559 * The connect message can contain a network id passed as arg1 on message or 6560 * or a config passed as obj on message. 6561 * For a new network, a config is passed to create and connect. 6562 * For an existing network, a network id is passed 6563 */ 6564 netId = message.arg1; 6565 config = (WifiConfiguration) message.obj; 6566 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6567 boolean updatedExisting = false; 6568 6569 /* Save the network config */ 6570 if (config != null) { 6571 String configKey = config.configKey(true /* allowCached */); 6572 WifiConfiguration savedConfig = 6573 mWifiConfigStore.getWifiConfiguration(configKey); 6574 if (savedConfig != null) { 6575 // There is an existing config with this netId, but it wasn't exposed 6576 // (either AUTO_JOIN_DELETED or ephemeral; see WifiConfigStore# 6577 // getConfiguredNetworks). Remove those bits and update the config. 6578 config = savedConfig; 6579 loge("CONNECT_NETWORK updating existing config with id=" + 6580 config.networkId + " configKey=" + configKey); 6581 config.ephemeral = false; 6582 config.autoJoinStatus = WifiConfiguration.AUTO_JOIN_ENABLED; 6583 updatedExisting = true; 6584 } 6585 6586 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 6587 netId = result.getNetworkId(); 6588 } 6589 config = mWifiConfigStore.getWifiConfiguration(netId); 6590 6591 if (config == null) { 6592 loge("CONNECT_NETWORK id=" + Integer.toString(netId) + " " 6593 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 6594 + getCurrentState().getName()); 6595 } else { 6596 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 6597 loge("CONNECT_NETWORK id=" + Integer.toString(netId) 6598 + " config=" + config.SSID 6599 + " cnid=" + config.networkId 6600 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 6601 + " my state " + getCurrentState().getName() 6602 + " uid = " + message.sendingUid 6603 + wasSkipped); 6604 } 6605 6606 autoRoamSetBSSID(netId, "any"); 6607 6608 if (message.sendingUid == Process.WIFI_UID 6609 || message.sendingUid == Process.SYSTEM_UID) { 6610 // As a sanity measure, clear the BSSID in the supplicant network block. 6611 // If system or Wifi Settings want to connect, they will not 6612 // specify the BSSID. 6613 // If an app however had added a BSSID to this configuration, and the BSSID 6614 // was wrong, Then we would forever fail to connect until that BSSID 6615 // is cleaned up. 6616 clearConfigBSSID(config, "CONNECT_NETWORK"); 6617 } 6618 6619 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 6620 6621 /* Tell autojoin the user did try to connect to that network */ 6622 mWifiAutoJoinController.updateConfigurationHistory(netId, true, true); 6623 6624 mWifiConfigStore.setLastSelectedConfiguration(netId); 6625 6626 didDisconnect = false; 6627 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 6628 && mLastNetworkId != netId) { 6629 /** Supplicant will ignore the reconnect if we are currently associated, 6630 * hence trigger a disconnect 6631 */ 6632 didDisconnect = true; 6633 mWifiNative.disconnect(); 6634 } 6635 6636 // Make sure the network is enabled, since supplicant will not reenable it 6637 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6638 6639 if (mWifiConfigStore.selectNetwork(netId) && 6640 mWifiNative.reconnect()) { 6641 lastConnectAttempt = System.currentTimeMillis(); 6642 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6643 6644 /* The state tracker handles enabling networks upon completion/failure */ 6645 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 6646 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 6647 if (didDisconnect) { 6648 /* Expect a disconnection from the old connection */ 6649 transitionTo(mDisconnectingState); 6650 } else if (updatedExisting && getCurrentState() == mConnectedState && 6651 getCurrentWifiConfiguration().networkId == netId) { 6652 // Update the current set of network capabilities, but stay in the 6653 // current state. 6654 updateCapabilities(config); 6655 } else { 6656 /** 6657 * Directly go to disconnected state where we 6658 * process the connection events from supplicant 6659 **/ 6660 transitionTo(mDisconnectedState); 6661 } 6662 } else { 6663 loge("Failed to connect config: " + config + " netId: " + netId); 6664 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6665 WifiManager.ERROR); 6666 break; 6667 } 6668 break; 6669 case WifiManager.SAVE_NETWORK: 6670 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6671 // Fall thru 6672 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 6673 lastSavedConfigurationAttempt = null; // Used for debug 6674 config = (WifiConfiguration) message.obj; 6675 if (config == null) { 6676 loge("ERROR: SAVE_NETWORK with null configuration" 6677 + mSupplicantStateTracker.getSupplicantStateName() 6678 + " my state " + getCurrentState().getName()); 6679 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6680 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 6681 WifiManager.ERROR); 6682 break; 6683 } 6684 lastSavedConfigurationAttempt = new WifiConfiguration(config); 6685 int nid = config.networkId; 6686 loge("SAVE_NETWORK id=" + Integer.toString(nid) 6687 + " config=" + config.SSID 6688 + " nid=" + config.networkId 6689 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 6690 + " my state " + getCurrentState().getName()); 6691 6692 result = mWifiConfigStore.saveNetwork(config, -1); 6693 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 6694 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 6695 if (result.hasIpChanged()) { 6696 // The currently connection configuration was changed 6697 // We switched from DHCP to static or from static to DHCP, or the 6698 // static IP address has changed. 6699 log("Reconfiguring IP on connection"); 6700 // TODO: clear addresses and disable IPv6 6701 // to simplify obtainingIpState. 6702 transitionTo(mObtainingIpState); 6703 } 6704 if (result.hasProxyChanged()) { 6705 log("Reconfiguring proxy on connection"); 6706 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 6707 } 6708 } 6709 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 6710 if (VDBG) { 6711 loge("Success save network nid=" 6712 + Integer.toString(result.getNetworkId())); 6713 } 6714 6715 synchronized(mScanResultCache) { 6716 /** 6717 * If the command comes from WifiManager, then 6718 * tell autojoin the user did try to modify and save that network, 6719 * and interpret the SAVE_NETWORK as a request to connect 6720 */ 6721 boolean user = message.what == WifiManager.SAVE_NETWORK; 6722 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 6723 , user, true); 6724 mWifiAutoJoinController.attemptAutoJoin(); 6725 } 6726 } else { 6727 loge("Failed to save network"); 6728 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6729 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 6730 WifiManager.ERROR); 6731 } 6732 break; 6733 case WifiManager.FORGET_NETWORK: 6734 // Debug only, remember last configuration that was forgotten 6735 WifiConfiguration toRemove 6736 = mWifiConfigStore.getWifiConfiguration(message.arg1); 6737 if (toRemove == null) { 6738 lastForgetConfigurationAttempt = null; 6739 } else { 6740 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 6741 } 6742 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 6743 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 6744 } else { 6745 loge("Failed to forget network"); 6746 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 6747 WifiManager.ERROR); 6748 } 6749 break; 6750 case WifiManager.START_WPS: 6751 WpsInfo wpsInfo = (WpsInfo) message.obj; 6752 WpsResult wpsResult; 6753 switch (wpsInfo.setup) { 6754 case WpsInfo.PBC: 6755 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 6756 break; 6757 case WpsInfo.KEYPAD: 6758 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 6759 break; 6760 case WpsInfo.DISPLAY: 6761 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 6762 break; 6763 default: 6764 wpsResult = new WpsResult(Status.FAILURE); 6765 loge("Invalid setup for WPS"); 6766 break; 6767 } 6768 mWifiConfigStore.setLastSelectedConfiguration 6769 (WifiConfiguration.INVALID_NETWORK_ID); 6770 if (wpsResult.status == Status.SUCCESS) { 6771 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 6772 transitionTo(mWpsRunningState); 6773 } else { 6774 loge("Failed to start WPS with config " + wpsInfo.toString()); 6775 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 6776 } 6777 break; 6778 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6779 if (DBG) log("Network connection established"); 6780 mLastNetworkId = message.arg1; 6781 mLastBssid = (String) message.obj; 6782 6783 mWifiInfo.setBSSID(mLastBssid); 6784 mWifiInfo.setNetworkId(mLastNetworkId); 6785 6786 sendNetworkStateChangeBroadcast(mLastBssid); 6787 transitionTo(mObtainingIpState); 6788 break; 6789 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6790 // Calling handleNetworkDisconnect here is redundant because we might already 6791 // have called it when leaving L2ConnectedState to go to disconnecting state 6792 // or thru other path 6793 // We should normally check the mWifiInfo or mLastNetworkId so as to check 6794 // if they are valid, and only in this case call handleNEtworkDisconnect, 6795 // TODO: this should be fixed for a L MR release 6796 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 6797 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 6798 // at the chip etc... 6799 if (DBG) log("ConnectModeState: Network connection lost "); 6800 handleNetworkDisconnect(); 6801 transitionTo(mDisconnectedState); 6802 break; 6803 default: 6804 return NOT_HANDLED; 6805 } 6806 return HANDLED; 6807 } 6808 } 6809 6810 private void updateCapabilities(WifiConfiguration config) { 6811 if (config.ephemeral) { 6812 mNetworkCapabilities.removeCapability( 6813 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 6814 } else { 6815 mNetworkCapabilities.addCapability( 6816 NetworkCapabilities.NET_CAPABILITY_TRUSTED); 6817 } 6818 mNetworkAgent.sendNetworkCapabilities(mNetworkCapabilities); 6819 } 6820 6821 private class WifiNetworkAgent extends NetworkAgent { 6822 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 6823 NetworkCapabilities nc, LinkProperties lp, int score) { 6824 super(l, c, TAG, ni, nc, lp, score); 6825 } 6826 protected void unwanted() { 6827 // Ignore if we're not the current networkAgent. 6828 if (this != mNetworkAgent) return; 6829 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 6830 + Integer.toString(mWifiInfo.score)); 6831 unwantedNetwork(network_status_unwanted_disconnect); 6832 } 6833 6834 protected void networkStatus(int status) { 6835 if (status == NetworkAgent.INVALID_NETWORK) { 6836 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid, score=" 6837 + Integer.toString(mWifiInfo.score)); 6838 unwantedNetwork(network_status_unwanted_disable_autojoin); 6839 } else if (status == NetworkAgent.VALID_NETWORK) { 6840 if (DBG && mWifiInfo != null) log("WifiNetworkAgent -> Wifi networkStatus valid, score= " 6841 + Integer.toString(mWifiInfo.score)); 6842 doNetworkStatus(status); 6843 } 6844 } 6845 } 6846 6847 void unwantedNetwork(int reason) { 6848 sendMessage(CMD_UNWANTED_NETWORK, reason); 6849 } 6850 6851 void doNetworkStatus(int status) { 6852 sendMessage(CMD_NETWORK_STATUS, status); 6853 } 6854 6855 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 6856 if (config == null) 6857 return false; 6858 6859 // We are still seeing a fairly high power consumption triggered by autojoin scans 6860 // Hence do partial scans only for PSK configuration that are roamable since the 6861 // primary purpose of the partial scans is roaming. 6862 // Full badn scans with exponential backoff for the purpose or extended roaming and 6863 // network switching are performed unconditionally. 6864 if (config.scanResultCache == null 6865 || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) 6866 || config.scanResultCache.size() > 6) { 6867 //return true but to not trigger the scan 6868 return true; 6869 } 6870 HashSet<Integer> channels 6871 = mWifiConfigStore.makeChannelList(config, 6872 ONE_HOUR_MILLI, restrictChannelList); 6873 if (channels != null && channels.size() != 0) { 6874 StringBuilder freqs = new StringBuilder(); 6875 boolean first = true; 6876 for (Integer channel : channels) { 6877 if (!first) 6878 freqs.append(","); 6879 freqs.append(channel.toString()); 6880 first = false; 6881 } 6882 //if (DBG) { 6883 loge("WifiStateMachine starting scan for " + config.configKey() + " with " + freqs); 6884 //} 6885 // Call wifi native to start the scan 6886 if (startScanNative( 6887 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 6888 freqs.toString())) { 6889 // Only count battery consumption if scan request is accepted 6890 noteScanStart(SCAN_ALARM_SOURCE, null); 6891 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 6892 } else { 6893 // used for debug only, mark scan as failed 6894 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 6895 } 6896 return true; 6897 } else { 6898 if (DBG) loge("WifiStateMachine no channels for " + config.configKey()); 6899 return false; 6900 } 6901 } 6902 6903 void clearCurrentConfigBSSID(String dbg) { 6904 // Clear the bssid in the current config's network block 6905 WifiConfiguration config = getCurrentWifiConfiguration(); 6906 if (config == null) 6907 return; 6908 clearConfigBSSID(config, dbg); 6909 } 6910 void clearConfigBSSID(WifiConfiguration config, String dbg) { 6911 if (config == null) 6912 return; 6913 if (DBG) { 6914 loge(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 6915 + " config.bssid " + config.BSSID); 6916 } 6917 config.autoJoinBSSID = "any"; 6918 config.BSSID = "any"; 6919 if (DBG) { 6920 loge(dbg + " " + config.SSID 6921 + " nid=" + Integer.toString(config.networkId)); 6922 } 6923 mWifiConfigStore.saveWifiConfigBSSID(config); 6924 } 6925 6926 class L2ConnectedState extends State { 6927 @Override 6928 public void enter() { 6929 mRssiPollToken++; 6930 if (mEnableRssiPolling) { 6931 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 6932 } 6933 if (mNetworkAgent != null) { 6934 loge("Have NetworkAgent when entering L2Connected"); 6935 setNetworkDetailedState(DetailedState.DISCONNECTED); 6936 } 6937 setNetworkDetailedState(DetailedState.CONNECTING); 6938 6939 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 6940 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 6941 } 6942 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 6943 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 6944 mLinkProperties, 60); 6945 6946 // We must clear the config BSSID, as the wifi chipset may decide to roam 6947 // from this point on and having the BSSID specified in the network block would 6948 // cause the roam to faile and the device to disconnect 6949 clearCurrentConfigBSSID("L2ConnectedState"); 6950 } 6951 6952 @Override 6953 public void exit() { 6954 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 6955 // Bug: 15347363 6956 // For paranoia's sake, call handleNetworkDisconnect 6957 // only if BSSID is null or last networkId 6958 // is not invalid. 6959 if (DBG) { 6960 StringBuilder sb = new StringBuilder(); 6961 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 6962 if (mLastBssid !=null) { 6963 sb.append(" ").append(mLastBssid); 6964 } 6965 } 6966 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6967 handleNetworkDisconnect(); 6968 } 6969 } 6970 6971 @Override 6972 public boolean processMessage(Message message) { 6973 logStateAndMessage(message, getClass().getSimpleName()); 6974 6975 switch (message.what) { 6976 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6977 handlePreDhcpSetup(); 6978 break; 6979 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6980 handlePostDhcpSetup(); 6981 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 6982 if (DBG) log("WifiStateMachine DHCP successful"); 6983 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 6984 // We advance to mVerifyingLinkState because handleIPv4Success will call 6985 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 6986 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 6987 if (DBG) { 6988 int count = -1; 6989 WifiConfiguration config = getCurrentWifiConfiguration(); 6990 if (config != null) { 6991 count = config.numConnectionFailures; 6992 } 6993 log("WifiStateMachine DHCP failure count=" + count); 6994 } 6995 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 6996 // As above, we transition to mDisconnectingState via updateLinkProperties. 6997 } 6998 break; 6999 case CMD_IP_CONFIGURATION_SUCCESSFUL: 7000 handleSuccessfulIpConfiguration(); 7001 sendConnectedState(); 7002 transitionTo(mConnectedState); 7003 break; 7004 case CMD_IP_CONFIGURATION_LOST: 7005 // Get Link layer stats so as we get fresh tx packet counters 7006 getWifiLinkLayerStats(true); 7007 handleIpConfigurationLost(); 7008 transitionTo(mDisconnectingState); 7009 break; 7010 case CMD_DISCONNECT: 7011 mWifiNative.disconnect(); 7012 transitionTo(mDisconnectingState); 7013 break; 7014 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 7015 if (message.arg1 == 1) { 7016 mWifiNative.disconnect(); 7017 mTemporarilyDisconnectWifi = true; 7018 transitionTo(mDisconnectingState); 7019 } 7020 break; 7021 case CMD_SET_OPERATIONAL_MODE: 7022 if (message.arg1 != CONNECT_MODE) { 7023 sendMessage(CMD_DISCONNECT); 7024 deferMessage(message); 7025 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 7026 noteWifiDisabledWhileAssociated(); 7027 } 7028 } 7029 mWifiConfigStore. 7030 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7031 break; 7032 case CMD_SET_COUNTRY_CODE: 7033 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7034 deferMessage(message); 7035 break; 7036 case CMD_START_SCAN: 7037 //if (DBG) { 7038 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7039 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 7040 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 7041 + " targetRoamBSSID=" + mTargetRoamBSSID 7042 + " RSSI=" + mWifiInfo.getRssi()); 7043 //} 7044 if (message.arg1 == SCAN_ALARM_SOURCE) { 7045 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 7046 // not be processed) and restart the scan if needed 7047 boolean shouldScan = 7048 mScreenOn && mWifiConfigStore.enableAutoJoinScanWhenAssociated; 7049 if (!checkAndRestartDelayedScan(message.arg2, 7050 shouldScan, 7051 mWifiConfigStore.associatedPartialScanPeriodMilli, null, null)) { 7052 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 7053 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7054 + message.arg1 7055 + " " + message.arg2 + ", " + mDelayedScanCounter 7056 + " -> obsolete"); 7057 return HANDLED; 7058 } 7059 if (mP2pConnected.get()) { 7060 loge("WifiStateMachine L2Connected CMD_START_SCAN source " 7061 + message.arg1 7062 + " " + message.arg2 + ", " + mDelayedScanCounter 7063 + " ignore because P2P is connected"); 7064 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7065 return HANDLED; 7066 } 7067 boolean tryFullBandScan = false; 7068 boolean restrictChannelList = false; 7069 long now_ms = System.currentTimeMillis(); 7070 if (DBG) { 7071 loge("WifiStateMachine CMD_START_SCAN with age=" 7072 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7073 + " interval=" + fullBandConnectedTimeIntervalMilli 7074 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7075 } 7076 if (mWifiInfo != null) { 7077 if (mWifiConfigStore.enableFullBandScanWhenAssociated && 7078 (now_ms - lastFullBandConnectedTimeMilli) 7079 > fullBandConnectedTimeIntervalMilli) { 7080 if (DBG) { 7081 loge("WifiStateMachine CMD_START_SCAN try full band scan age=" 7082 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 7083 + " interval=" + fullBandConnectedTimeIntervalMilli 7084 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 7085 } 7086 tryFullBandScan = true; 7087 } 7088 7089 if (mWifiInfo.txSuccessRate > 7090 mWifiConfigStore.maxTxPacketForFullScans 7091 || mWifiInfo.rxSuccessRate > 7092 mWifiConfigStore.maxRxPacketForFullScans) { 7093 // Too much traffic at the interface, hence no full band scan 7094 if (DBG) { 7095 loge("WifiStateMachine CMD_START_SCAN " + 7096 "prevent full band scan due to pkt rate"); 7097 } 7098 tryFullBandScan = false; 7099 } 7100 7101 if (mWifiInfo.txSuccessRate > 7102 mWifiConfigStore.maxTxPacketForPartialScans 7103 || mWifiInfo.rxSuccessRate > 7104 mWifiConfigStore.maxRxPacketForPartialScans) { 7105 // Don't scan if lots of packets are being sent 7106 restrictChannelList = true; 7107 if (mWifiConfigStore.alwaysEnableScansWhileAssociated == 0) { 7108 if (DBG) { 7109 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 7110 + " ...and ignore scans" 7111 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 7112 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 7113 } 7114 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 7115 return HANDLED; 7116 } 7117 } 7118 } 7119 7120 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 7121 if (DBG) { 7122 loge("WifiStateMachine CMD_START_SCAN full=" + 7123 tryFullBandScan); 7124 } 7125 if (currentConfiguration != null) { 7126 if (fullBandConnectedTimeIntervalMilli 7127 < mWifiConfigStore.associatedPartialScanPeriodMilli) { 7128 // Sanity 7129 fullBandConnectedTimeIntervalMilli 7130 = mWifiConfigStore.associatedPartialScanPeriodMilli; 7131 } 7132 if (tryFullBandScan) { 7133 lastFullBandConnectedTimeMilli = now_ms; 7134 if (fullBandConnectedTimeIntervalMilli 7135 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7136 // Increase the interval 7137 fullBandConnectedTimeIntervalMilli 7138 = fullBandConnectedTimeIntervalMilli 7139 * mWifiConfigStore.associatedFullScanBackoff / 8; 7140 7141 if (DBG) { 7142 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7143 + fullBandConnectedTimeIntervalMilli); 7144 } 7145 } 7146 handleScanRequest( 7147 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7148 } else { 7149 if (!startScanForConfiguration( 7150 currentConfiguration, restrictChannelList)) { 7151 if (DBG) { 7152 loge("WifiStateMachine starting scan, " + 7153 " did not find channels -> full"); 7154 } 7155 lastFullBandConnectedTimeMilli = now_ms; 7156 if (fullBandConnectedTimeIntervalMilli 7157 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 7158 // Increase the interval 7159 fullBandConnectedTimeIntervalMilli 7160 = fullBandConnectedTimeIntervalMilli 7161 * mWifiConfigStore.associatedFullScanBackoff / 8; 7162 7163 if (DBG) { 7164 loge("WifiStateMachine CMD_START_SCAN bump interval =" 7165 + fullBandConnectedTimeIntervalMilli); 7166 } 7167 } 7168 handleScanRequest( 7169 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 7170 } 7171 } 7172 7173 } else { 7174 loge("CMD_START_SCAN : connected mode and no configuration"); 7175 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 7176 } 7177 } else { 7178 // Not scan alarm source 7179 return NOT_HANDLED; 7180 } 7181 break; 7182 /* Ignore connection to same network */ 7183 case WifiManager.CONNECT_NETWORK: 7184 int netId = message.arg1; 7185 if (mWifiInfo.getNetworkId() == netId) { 7186 break; 7187 } 7188 return NOT_HANDLED; 7189 /* Ignore */ 7190 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7191 break; 7192 case CMD_RSSI_POLL: 7193 if (message.arg1 == mRssiPollToken) { 7194 if (mWifiConfigStore.enableChipWakeUpWhenAssociated) { 7195 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 7196 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 7197 if (stats != null) { 7198 // Sanity check the results provided by driver 7199 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 7200 && (stats.rssi_mgmt == 0 7201 || stats.beacon_rx == 0)) { 7202 stats = null; 7203 } 7204 } 7205 // Get Info and continue polling 7206 fetchRssiLinkSpeedAndFrequencyNative(); 7207 calculateWifiScore(stats); 7208 } 7209 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7210 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7211 7212 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 7213 } else { 7214 // Polling has completed 7215 } 7216 break; 7217 case CMD_ENABLE_RSSI_POLL: 7218 if (mWifiConfigStore.enableRssiPollWhenAssociated) { 7219 mEnableRssiPolling = (message.arg1 == 1); 7220 } else { 7221 mEnableRssiPolling = false; 7222 } 7223 mRssiPollToken++; 7224 if (mEnableRssiPolling) { 7225 // First poll 7226 fetchRssiLinkSpeedAndFrequencyNative(); 7227 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 7228 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 7229 } else { 7230 cleanWifiScore(); 7231 } 7232 break; 7233 case WifiManager.RSSI_PKTCNT_FETCH: 7234 RssiPacketCountInfo info = new RssiPacketCountInfo(); 7235 fetchRssiLinkSpeedAndFrequencyNative(); 7236 info.rssi = mWifiInfo.getRssi(); 7237 fetchPktcntNative(info); 7238 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 7239 break; 7240 case CMD_DELAYED_NETWORK_DISCONNECT: 7241 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 7242 7243 // Ignore if we are not debouncing 7244 loge("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 7245 + message.arg1); 7246 return HANDLED; 7247 } else { 7248 loge("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 7249 + message.arg1); 7250 7251 linkDebouncing = false; 7252 // If we are still debouncing while this message comes, 7253 // it means we were not able to reconnect within the alloted time 7254 // = LINK_FLAPPING_DEBOUNCE_MSEC 7255 // and thus, trigger a real disconnect 7256 handleNetworkDisconnect(); 7257 transitionTo(mDisconnectedState); 7258 } 7259 break; 7260 case CMD_ASSOCIATED_BSSID: 7261 if ((String) message.obj == null) { 7262 loge("Associated command w/o BSSID"); 7263 break; 7264 } 7265 mLastBssid = (String) message.obj; 7266 mWifiInfo.setBSSID((String) message.obj); 7267 break; 7268 default: 7269 return NOT_HANDLED; 7270 } 7271 7272 return HANDLED; 7273 } 7274 } 7275 7276 class ObtainingIpState extends State { 7277 @Override 7278 public void enter() { 7279 if (DBG) { 7280 String key = ""; 7281 if (getCurrentWifiConfiguration() != null) { 7282 key = getCurrentWifiConfiguration().configKey(); 7283 } 7284 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 7285 + " " + key + " " 7286 + " roam=" + mAutoRoaming 7287 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 7288 + " watchdog= " + obtainingIpWatchdogCount); 7289 } 7290 7291 // Reset link Debouncing, indicating we have successfully re-connected to the AP 7292 // We might still be roaming 7293 linkDebouncing = false; 7294 7295 // Send event to CM & network change broadcast 7296 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 7297 7298 // We must clear the config BSSID, as the wifi chipset may decide to roam 7299 // from this point on and having the BSSID specified in the network block would 7300 // cause the roam to faile and the device to disconnect 7301 clearCurrentConfigBSSID("ObtainingIpAddress"); 7302 7303 try { 7304 mNwService.enableIpv6(mInterfaceName); 7305 } catch (RemoteException re) { 7306 loge("Failed to enable IPv6: " + re); 7307 } catch (IllegalStateException e) { 7308 loge("Failed to enable IPv6: " + e); 7309 } 7310 7311 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 7312 if (isRoaming()) { 7313 renewDhcp(); 7314 } else { 7315 // Remove any IP address on the interface in case we're switching from static 7316 // IP configuration to DHCP. This is safe because if we get here when not 7317 // roaming, we don't have a usable address. 7318 clearIPv4Address(mInterfaceName); 7319 startDhcp(); 7320 } 7321 obtainingIpWatchdogCount++; 7322 loge("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 7323 // Get Link layer stats so as we get fresh tx packet counters 7324 getWifiLinkLayerStats(true); 7325 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 7326 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 7327 } else { 7328 // stop any running dhcp before assigning static IP 7329 stopDhcp(); 7330 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 7331 mLastNetworkId); 7332 if (config.ipAddress == null) { 7333 loge("Static IP lacks address"); 7334 sendMessage(CMD_STATIC_IP_FAILURE); 7335 } else { 7336 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 7337 ifcg.setLinkAddress(config.ipAddress); 7338 ifcg.setInterfaceUp(); 7339 try { 7340 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 7341 if (DBG) log("Static IP configuration succeeded"); 7342 DhcpResults dhcpResults = new DhcpResults(config); 7343 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 7344 } catch (RemoteException re) { 7345 loge("Static IP configuration failed: " + re); 7346 sendMessage(CMD_STATIC_IP_FAILURE); 7347 } catch (IllegalStateException e) { 7348 loge("Static IP configuration failed: " + e); 7349 sendMessage(CMD_STATIC_IP_FAILURE); 7350 } 7351 } 7352 } 7353 } 7354 @Override 7355 public boolean processMessage(Message message) { 7356 logStateAndMessage(message, getClass().getSimpleName()); 7357 7358 switch(message.what) { 7359 case CMD_STATIC_IP_SUCCESS: 7360 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 7361 break; 7362 case CMD_STATIC_IP_FAILURE: 7363 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 7364 break; 7365 case CMD_AUTO_CONNECT: 7366 case CMD_AUTO_ROAM: 7367 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7368 break; 7369 case WifiManager.SAVE_NETWORK: 7370 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 7371 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7372 deferMessage(message); 7373 break; 7374 /* Defer any power mode changes since we must keep active power mode at DHCP */ 7375 case CMD_SET_HIGH_PERF_MODE: 7376 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7377 deferMessage(message); 7378 break; 7379 /* Defer scan request since we should not switch to other channels at DHCP */ 7380 case CMD_START_SCAN: 7381 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 7382 deferMessage(message); 7383 break; 7384 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 7385 if (message.arg1 == obtainingIpWatchdogCount) { 7386 loge("ObtainingIpAddress: Watchdog Triggered, count=" 7387 + obtainingIpWatchdogCount); 7388 handleIpConfigurationLost(); 7389 transitionTo(mDisconnectingState); 7390 break; 7391 } 7392 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7393 break; 7394 default: 7395 return NOT_HANDLED; 7396 } 7397 return HANDLED; 7398 } 7399 } 7400 7401 class VerifyingLinkState extends State { 7402 @Override 7403 public void enter() { 7404 log(getName() + " enter"); 7405 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 7406 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 7407 sendNetworkStateChangeBroadcast(mLastBssid); 7408 // End roaming 7409 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7410 } 7411 @Override 7412 public boolean processMessage(Message message) { 7413 logStateAndMessage(message, getClass().getSimpleName()); 7414 7415 switch (message.what) { 7416 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7417 // Stay here 7418 log(getName() + " POOR_LINK_DETECTED: no transition"); 7419 break; 7420 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 7421 log(getName() + " GOOD_LINK_DETECTED: transition to captive portal check"); 7422 7423 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 7424 sendConnectedState(); 7425 transitionTo(mConnectedState); 7426 break; 7427 default: 7428 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 7429 return NOT_HANDLED; 7430 } 7431 return HANDLED; 7432 } 7433 } 7434 7435 private void sendConnectedState() { 7436 // Send out a broadcast with the CAPTIVE_PORTAL_CHECK to preserve 7437 // existing behaviour. The captive portal check really happens after we 7438 // transition into DetailedState.CONNECTED. 7439 setNetworkDetailedState(DetailedState.CAPTIVE_PORTAL_CHECK); 7440 mWifiConfigStore.updateStatus(mLastNetworkId, 7441 DetailedState.CAPTIVE_PORTAL_CHECK); 7442 sendNetworkStateChangeBroadcast(mLastBssid); 7443 7444 if (mWifiConfigStore.getLastSelectedConfiguration() != null) { 7445 if (mNetworkAgent != null) mNetworkAgent.explicitlySelected(); 7446 } 7447 7448 setNetworkDetailedState(DetailedState.CONNECTED); 7449 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 7450 sendNetworkStateChangeBroadcast(mLastBssid); 7451 } 7452 7453 class RoamingState extends State { 7454 boolean mAssociated; 7455 @Override 7456 public void enter() { 7457 if (DBG) { 7458 log("RoamingState Enter" 7459 + " mScreenOn=" + mScreenOn ); 7460 } 7461 setScanAlarm(false); 7462 7463 // Make sure we disconnect if roaming fails 7464 roamWatchdogCount++; 7465 loge("Start Roam Watchdog " + roamWatchdogCount); 7466 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 7467 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 7468 mAssociated = false; 7469 } 7470 @Override 7471 public boolean processMessage(Message message) { 7472 logStateAndMessage(message, getClass().getSimpleName()); 7473 WifiConfiguration config; 7474 switch (message.what) { 7475 case CMD_IP_CONFIGURATION_LOST: 7476 config = getCurrentWifiConfiguration(); 7477 if (config != null) { 7478 mWifiConfigStore.noteRoamingFailure(config, 7479 WifiConfiguration.ROAMING_FAILURE_IP_CONFIG); 7480 } 7481 return NOT_HANDLED; 7482 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7483 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 7484 return HANDLED; 7485 case CMD_UNWANTED_NETWORK: 7486 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 7487 return HANDLED; 7488 case CMD_SET_OPERATIONAL_MODE: 7489 if (message.arg1 != CONNECT_MODE) { 7490 deferMessage(message); 7491 } 7492 break; 7493 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7494 /** 7495 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 7496 * before NETWORK_DISCONNECTION_EVENT 7497 * And there is an associated BSSID corresponding to our target BSSID, then 7498 * we have missed the network disconnection, transition to mDisconnectedState 7499 * and handle the rest of the events there. 7500 */ 7501 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 7502 if (stateChangeResult.state == SupplicantState.DISCONNECTED 7503 || stateChangeResult.state == SupplicantState.INACTIVE 7504 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 7505 if (DBG) { 7506 log("STATE_CHANGE_EVENT in roaming state " 7507 + stateChangeResult.toString() ); 7508 } 7509 if (stateChangeResult.BSSID != null 7510 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 7511 handleNetworkDisconnect(); 7512 transitionTo(mDisconnectedState); 7513 } 7514 } 7515 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 7516 // We completed the layer2 roaming part 7517 mAssociated = true; 7518 if (stateChangeResult.BSSID != null) { 7519 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 7520 } 7521 } 7522 break; 7523 case CMD_ROAM_WATCHDOG_TIMER: 7524 if (roamWatchdogCount == message.arg1) { 7525 if (DBG) log("roaming watchdog! -> disconnect"); 7526 mRoamFailCount++; 7527 handleNetworkDisconnect(); 7528 mWifiNative.disconnect(); 7529 transitionTo(mDisconnectedState); 7530 } 7531 break; 7532 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7533 if (mAssociated) { 7534 if (DBG) log("roaming and Network connection established"); 7535 mLastNetworkId = message.arg1; 7536 mLastBssid = (String) message.obj; 7537 mWifiInfo.setBSSID(mLastBssid); 7538 mWifiInfo.setNetworkId(mLastNetworkId); 7539 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 7540 transitionTo(mObtainingIpState); 7541 } else { 7542 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7543 } 7544 break; 7545 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7546 // Throw away but only if it corresponds to the network we're roaming to 7547 String bssid = (String)message.obj; 7548 if (true) { 7549 String target = ""; 7550 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 7551 log("NETWORK_DISCONNECTION_EVENT in roaming state" 7552 + " BSSID=" + bssid 7553 + " target=" + target); 7554 } 7555 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 7556 handleNetworkDisconnect(); 7557 transitionTo(mDisconnectedState); 7558 } 7559 break; 7560 case WifiMonitor.SSID_TEMP_DISABLED: 7561 // Auth error while roaming 7562 loge("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 7563 + " id=" + Integer.toString(message.arg1) 7564 + " isRoaming=" + isRoaming() 7565 + " roam=" + Integer.toString(mAutoRoaming)); 7566 if (message.arg1 == mLastNetworkId) { 7567 config = getCurrentWifiConfiguration(); 7568 if (config != null) { 7569 mWifiConfigStore.noteRoamingFailure(config, 7570 WifiConfiguration.ROAMING_FAILURE_AUTH_FAILURE); 7571 } 7572 handleNetworkDisconnect(); 7573 transitionTo(mDisconnectingState); 7574 } 7575 return NOT_HANDLED; 7576 case CMD_START_SCAN: 7577 deferMessage(message); 7578 break; 7579 default: 7580 return NOT_HANDLED; 7581 } 7582 return HANDLED; 7583 } 7584 7585 @Override 7586 public void exit() { 7587 loge("WifiStateMachine: Leaving Roaming state"); 7588 } 7589 } 7590 7591 class ConnectedState extends State { 7592 @Override 7593 public void enter() { 7594 String address; 7595 updateDefaultRouteMacAddress(1000); 7596 if (DBG) { 7597 log("ConnectedState Enter " 7598 + " mScreenOn=" + mScreenOn 7599 + " scanperiod=" 7600 + Integer.toString(mWifiConfigStore.associatedPartialScanPeriodMilli) ); 7601 } 7602 if (mScreenOn 7603 && mWifiConfigStore.enableAutoJoinScanWhenAssociated) { 7604 // restart scan alarm 7605 startDelayedScan(mWifiConfigStore.associatedPartialScanPeriodMilli, null, null); 7606 } 7607 registerConnected(); 7608 lastConnectAttempt = 0; 7609 targetWificonfiguration = null; 7610 // Paranoia 7611 linkDebouncing = false; 7612 7613 // Not roaming anymore 7614 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7615 7616 if (testNetworkDisconnect) { 7617 testNetworkDisconnectCounter++; 7618 loge("ConnectedState Enter start disconnect test " + 7619 testNetworkDisconnectCounter); 7620 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 7621 testNetworkDisconnectCounter, 0), 15000); 7622 } 7623 7624 // Reenable all networks, allow for hidden networks to be scanned 7625 mWifiConfigStore.enableAllNetworks(); 7626 7627 mLastDriverRoamAttempt = 0; 7628 } 7629 @Override 7630 public boolean processMessage(Message message) { 7631 WifiConfiguration config = null; 7632 logStateAndMessage(message, getClass().getSimpleName()); 7633 7634 switch (message.what) { 7635 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7636 if (DBG) log("Watchdog reports poor link"); 7637 transitionTo(mVerifyingLinkState); 7638 break; 7639 case CMD_UNWANTED_NETWORK: 7640 if (message.arg1 == network_status_unwanted_disconnect) { 7641 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 7642 mWifiNative.disconnect(); 7643 transitionTo(mDisconnectingState); 7644 } else if (message.arg1 == network_status_unwanted_disable_autojoin) { 7645 config = getCurrentWifiConfiguration(); 7646 if (config != null) { 7647 // Disable autojoin 7648 config.numNoInternetAccessReports += 1; 7649 } 7650 } 7651 return HANDLED; 7652 case CMD_NETWORK_STATUS: 7653 if (message.arg1 == NetworkAgent.VALID_NETWORK) { 7654 config = getCurrentWifiConfiguration(); 7655 if (config != null) { 7656 // re-enable autojoin 7657 config.numNoInternetAccessReports = 0; 7658 config.validatedInternetAccess = true; 7659 } 7660 } 7661 return HANDLED; 7662 case CMD_TEST_NETWORK_DISCONNECT: 7663 // Force a disconnect 7664 if (message.arg1 == testNetworkDisconnectCounter) { 7665 mWifiNative.disconnect(); 7666 } 7667 break; 7668 case CMD_ASSOCIATED_BSSID: 7669 // ASSOCIATING to a new BSSID while already connected, indicates 7670 // that driver is roaming 7671 mLastDriverRoamAttempt = System.currentTimeMillis(); 7672 String toBSSID = (String)message.obj; 7673 if (toBSSID != null && !toBSSID.equals(mWifiInfo.getBSSID())) { 7674 mWifiConfigStore.driverRoamedFrom(mWifiInfo); 7675 } 7676 return NOT_HANDLED; 7677 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7678 long lastRoam = 0; 7679 if (mLastDriverRoamAttempt != 0) { 7680 // Calculate time since last driver roam attempt 7681 lastRoam = System.currentTimeMillis() - mLastDriverRoamAttempt; 7682 mLastDriverRoamAttempt = 0; 7683 } 7684 config = getCurrentWifiConfiguration(); 7685 if (mScreenOn 7686 && !linkDebouncing 7687 && config != null 7688 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 7689 && !mWifiConfigStore.isLastSelectedConfiguration(config) 7690 && (message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 7691 || (lastRoam > 0 && lastRoam < 2000) /* unless driver is roaming */) 7692 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 7693 && mWifiInfo.getRssi() > 7694 WifiConfiguration.BAD_RSSI_24) 7695 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 7696 && mWifiInfo.getRssi() > 7697 WifiConfiguration.BAD_RSSI_5))) { 7698 // Start de-bouncing the L2 disconnection: 7699 // this L2 disconnection might be spurious. 7700 // Hence we allow 7 seconds for the state machine to try 7701 // to reconnect, go thru the 7702 // roaming cycle and enter Obtaining IP address 7703 // before signalling the disconnect to ConnectivityService and L3 7704 startScanForConfiguration(getCurrentWifiConfiguration(), false); 7705 linkDebouncing = true; 7706 7707 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 7708 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 7709 if (DBG) { 7710 log("NETWORK_DISCONNECTION_EVENT in connected state" 7711 + " BSSID=" + mWifiInfo.getBSSID() 7712 + " RSSI=" + mWifiInfo.getRssi() 7713 + " freq=" + mWifiInfo.getFrequency() 7714 + " reason=" + message.arg2 7715 + " -> debounce"); 7716 } 7717 return HANDLED; 7718 } else { 7719 if (DBG) { 7720 int ajst = -1; 7721 if (config != null) ajst = config.autoJoinStatus; 7722 log("NETWORK_DISCONNECTION_EVENT in connected state" 7723 + " BSSID=" + mWifiInfo.getBSSID() 7724 + " RSSI=" + mWifiInfo.getRssi() 7725 + " freq=" + mWifiInfo.getFrequency() 7726 + " was debouncing=" + linkDebouncing 7727 + " reason=" + message.arg2 7728 + " ajst=" + ajst); 7729 } 7730 } 7731 break; 7732 case CMD_AUTO_ROAM: 7733 // Clear the driver roam indication since we are attempting a framerwork roam 7734 mLastDriverRoamAttempt = 0; 7735 7736 /* Connect command coming from auto-join */ 7737 ScanResult candidate = (ScanResult)message.obj; 7738 String bssid = "any"; 7739 if (candidate != null && candidate.is5GHz()) { 7740 // Only lock BSSID for 5GHz networks 7741 bssid = candidate.BSSID; 7742 } 7743 int netId = mLastNetworkId; 7744 config = getCurrentWifiConfiguration(); 7745 7746 7747 if (config == null) { 7748 loge("AUTO_ROAM and no config, bail out..."); 7749 break; 7750 } 7751 7752 loge("CMD_AUTO_ROAM sup state " 7753 + mSupplicantStateTracker.getSupplicantStateName() 7754 + " my state " + getCurrentState().getName() 7755 + " nid=" + Integer.toString(netId) 7756 + " config " + config.configKey() 7757 + " roam=" + Integer.toString(message.arg2) 7758 + " to " + bssid 7759 + " targetRoamBSSID " + mTargetRoamBSSID); 7760 7761 /* Save the BSSID so as to lock it @ firmware */ 7762 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 7763 loge("AUTO_ROAM nothing to do"); 7764 // Same BSSID, nothing to do 7765 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7766 break; 7767 }; 7768 7769 // Make sure the network is enabled, since supplicant will not reenable it 7770 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7771 7772 boolean ret = false; 7773 if (mLastNetworkId != netId) { 7774 if (mWifiConfigStore.selectNetwork(netId) && 7775 mWifiNative.reconnect()) { 7776 ret = true; 7777 } 7778 } else { 7779 ret = mWifiNative.reassociate(); 7780 } 7781 if (ret) { 7782 lastConnectAttempt = System.currentTimeMillis(); 7783 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7784 7785 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7786 mAutoRoaming = message.arg2; 7787 transitionTo(mRoamingState); 7788 7789 } else { 7790 loge("Failed to connect config: " + config + " netId: " + netId); 7791 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7792 WifiManager.ERROR); 7793 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7794 break; 7795 } 7796 break; 7797 default: 7798 return NOT_HANDLED; 7799 } 7800 return HANDLED; 7801 } 7802 7803 @Override 7804 public void exit() { 7805 loge("WifiStateMachine: Leaving Connected state"); 7806 setScanAlarm(false); 7807 mLastDriverRoamAttempt = 0; 7808 } 7809 } 7810 7811 class DisconnectingState extends State { 7812 7813 @Override 7814 public void enter() { 7815 7816 if (PDBG) { 7817 loge(" Enter DisconnectingState State scan interval " + mFrameworkScanIntervalMs 7818 + " mEnableBackgroundScan= " + mEnableBackgroundScan 7819 + " screenOn=" + mScreenOn); 7820 } 7821 7822 // Make sure we disconnect: we enter this state prior connecting to a new 7823 // network, waiting for either a DISCONECT event or a SUPPLICANT_STATE_CHANGE 7824 // event which in this case will be indicating that supplicant started to associate. 7825 // In some cases supplicant doesn't ignore the connect requests (it might not 7826 // find the target SSID in its cache), 7827 // Therefore we end up stuck that state, hence the need for the watchdog. 7828 disconnectingWatchdogCount++; 7829 loge("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 7830 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 7831 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 7832 } 7833 7834 @Override 7835 public boolean processMessage(Message message) { 7836 logStateAndMessage(message, getClass().getSimpleName()); 7837 switch (message.what) { 7838 case CMD_SET_OPERATIONAL_MODE: 7839 if (message.arg1 != CONNECT_MODE) { 7840 deferMessage(message); 7841 } 7842 break; 7843 case CMD_START_SCAN: 7844 deferMessage(message); 7845 return HANDLED; 7846 case CMD_DISCONNECTING_WATCHDOG_TIMER: 7847 if (disconnectingWatchdogCount == message.arg1) { 7848 if (DBG) log("disconnecting watchdog! -> disconnect"); 7849 handleNetworkDisconnect(); 7850 transitionTo(mDisconnectedState); 7851 } 7852 break; 7853 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7854 /** 7855 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 7856 * we have missed the network disconnection, transition to mDisconnectedState 7857 * and handle the rest of the events there 7858 */ 7859 deferMessage(message); 7860 handleNetworkDisconnect(); 7861 transitionTo(mDisconnectedState); 7862 break; 7863 default: 7864 return NOT_HANDLED; 7865 } 7866 return HANDLED; 7867 } 7868 } 7869 7870 class DisconnectedState extends State { 7871 @Override 7872 public void enter() { 7873 // We dont scan frequently if this is a temporary disconnect 7874 // due to p2p 7875 if (mTemporarilyDisconnectWifi) { 7876 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 7877 return; 7878 } 7879 7880 mFrameworkScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 7881 Settings.Global.WIFI_FRAMEWORK_SCAN_INTERVAL_MS, 7882 mDefaultFrameworkScanIntervalMs); 7883 7884 if (PDBG) { 7885 loge(" Enter disconnected State scan interval " + mFrameworkScanIntervalMs 7886 + " mEnableBackgroundScan= " + mEnableBackgroundScan 7887 + " screenOn=" + mScreenOn 7888 + " mFrameworkScanIntervalMs=" + mFrameworkScanIntervalMs); 7889 } 7890 7891 /** clear the roaming state, if we were roaming, we failed */ 7892 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7893 7894 if (mScreenOn) { 7895 /** 7896 * screen lit and => delayed timer 7897 */ 7898 startDelayedScan(mDisconnectedScanPeriodMs, null, null); 7899 } else { 7900 /** 7901 * screen dark and PNO supported => scan alarm disabled 7902 */ 7903 if (mEnableBackgroundScan) { 7904 /* If a regular scan result is pending, do not initiate background 7905 * scan until the scan results are returned. This is needed because 7906 * initiating a background scan will cancel the regular scan and 7907 * scan results will not be returned until background scanning is 7908 * cleared 7909 */ 7910 if (!mIsScanOngoing) { 7911 enableBackgroundScan(true); 7912 } 7913 } else { 7914 setScanAlarm(true); 7915 } 7916 } 7917 7918 /** 7919 * If we have no networks saved, the supplicant stops doing the periodic scan. 7920 * The scans are useful to notify the user of the presence of an open network. 7921 * Note that these are not wake up scans. 7922 */ 7923 if (!mP2pConnected.get() && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 7924 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 7925 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 7926 } 7927 7928 mDisconnectedTimeStamp = System.currentTimeMillis(); 7929 7930 } 7931 @Override 7932 public boolean processMessage(Message message) { 7933 boolean ret = HANDLED; 7934 7935 logStateAndMessage(message, getClass().getSimpleName()); 7936 7937 switch (message.what) { 7938 case CMD_NO_NETWORKS_PERIODIC_SCAN: 7939 if (mP2pConnected.get()) break; 7940 if (message.arg1 == mPeriodicScanToken && 7941 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 7942 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 7943 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 7944 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 7945 } 7946 break; 7947 case WifiManager.FORGET_NETWORK: 7948 case CMD_REMOVE_NETWORK: 7949 // Set up a delayed message here. After the forget/remove is handled 7950 // the handled delayed message will determine if there is a need to 7951 // scan and continue 7952 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 7953 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 7954 ret = NOT_HANDLED; 7955 break; 7956 case CMD_SET_OPERATIONAL_MODE: 7957 if (message.arg1 != CONNECT_MODE) { 7958 mOperationalMode = message.arg1; 7959 7960 mWifiConfigStore.disableAllNetworks(); 7961 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 7962 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 7963 setWifiState(WIFI_STATE_DISABLED); 7964 } 7965 transitionTo(mScanModeState); 7966 } 7967 mWifiConfigStore. 7968 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 7969 break; 7970 /* Ignore network disconnect */ 7971 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7972 break; 7973 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7974 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 7975 if (DBG) { 7976 loge("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 7977 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 7978 + " debouncing=" + linkDebouncing); 7979 } 7980 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 7981 /* ConnectModeState does the rest of the handling */ 7982 ret = NOT_HANDLED; 7983 break; 7984 case CMD_START_SCAN: 7985 if (!checkOrDeferScanAllowed(message)) { 7986 // The scan request was rescheduled 7987 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 7988 return HANDLED; 7989 } 7990 /* Disable background scan temporarily during a regular scan */ 7991 if (mEnableBackgroundScan) { 7992 enableBackgroundScan(false); 7993 } 7994 if (message.arg1 == SCAN_ALARM_SOURCE) { 7995 // Check if the CMD_START_SCAN message is obsolete (and thus if it should 7996 // not be processed) and restart the scan 7997 int period = mDisconnectedScanPeriodMs; 7998 if (mP2pConnected.get()) { 7999 period = (int)Settings.Global.getLong(mContext.getContentResolver(), 8000 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8001 mDisconnectedScanPeriodMs); 8002 } 8003 if (!checkAndRestartDelayedScan(message.arg2, 8004 true, period, null, null)) { 8005 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OBSOLETE; 8006 loge("WifiStateMachine Disconnected CMD_START_SCAN source " 8007 + message.arg1 8008 + " " + message.arg2 + ", " + mDelayedScanCounter 8009 + " -> obsolete"); 8010 return HANDLED; 8011 } 8012 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 8013 ret = HANDLED; 8014 } else { 8015 ret = NOT_HANDLED; 8016 } 8017 break; 8018 case WifiMonitor.SCAN_RESULTS_EVENT: 8019 /* Re-enable background scan when a pending scan result is received */ 8020 if (mEnableBackgroundScan && mIsScanOngoing) { 8021 enableBackgroundScan(true); 8022 } 8023 /* Handled in parent state */ 8024 ret = NOT_HANDLED; 8025 break; 8026 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 8027 NetworkInfo info = (NetworkInfo) message.obj; 8028 mP2pConnected.set(info.isConnected()); 8029 if (mP2pConnected.get()) { 8030 int defaultInterval = mContext.getResources().getInteger( 8031 R.integer.config_wifi_scan_interval_p2p_connected); 8032 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 8033 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 8034 defaultInterval); 8035 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 8036 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 8037 if (DBG) log("Turn on scanning after p2p disconnected"); 8038 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 8039 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 8040 } else { 8041 // If P2P is not connected and there are saved networks, then restart 8042 // scanning at the normal period. This is necessary because scanning might 8043 // have been disabled altogether if WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS 8044 // was set to zero. 8045 startDelayedScan(mDisconnectedScanPeriodMs, null, null); 8046 } 8047 case CMD_RECONNECT: 8048 case CMD_REASSOCIATE: 8049 if (mTemporarilyDisconnectWifi) { 8050 // Drop a third party reconnect/reassociate if STA is 8051 // temporarily disconnected for p2p 8052 break; 8053 } else { 8054 // ConnectModeState handles it 8055 ret = NOT_HANDLED; 8056 } 8057 break; 8058 case CMD_SCREEN_STATE_CHANGED: 8059 handleScreenStateChanged(message.arg1 != 0, 8060 /* startBackgroundScanIfNeeded = */ true); 8061 break; 8062 default: 8063 ret = NOT_HANDLED; 8064 } 8065 return ret; 8066 } 8067 8068 @Override 8069 public void exit() { 8070 /* No need for a background scan upon exit from a disconnected state */ 8071 if (mEnableBackgroundScan) { 8072 enableBackgroundScan(false); 8073 } 8074 setScanAlarm(false); 8075 } 8076 } 8077 8078 class WpsRunningState extends State { 8079 // Tracks the source to provide a reply 8080 private Message mSourceMessage; 8081 @Override 8082 public void enter() { 8083 mSourceMessage = Message.obtain(getCurrentMessage()); 8084 } 8085 @Override 8086 public boolean processMessage(Message message) { 8087 logStateAndMessage(message, getClass().getSimpleName()); 8088 8089 switch (message.what) { 8090 case WifiMonitor.WPS_SUCCESS_EVENT: 8091 // Ignore intermediate success, wait for full connection 8092 break; 8093 case WifiMonitor.NETWORK_CONNECTION_EVENT: 8094 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 8095 mSourceMessage.recycle(); 8096 mSourceMessage = null; 8097 deferMessage(message); 8098 transitionTo(mDisconnectedState); 8099 break; 8100 case WifiMonitor.WPS_OVERLAP_EVENT: 8101 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8102 WifiManager.WPS_OVERLAP_ERROR); 8103 mSourceMessage.recycle(); 8104 mSourceMessage = null; 8105 transitionTo(mDisconnectedState); 8106 break; 8107 case WifiMonitor.WPS_FAIL_EVENT: 8108 // Arg1 has the reason for the failure 8109 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 8110 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 8111 mSourceMessage.recycle(); 8112 mSourceMessage = null; 8113 transitionTo(mDisconnectedState); 8114 } else { 8115 if (DBG) log("Ignore unspecified fail event during WPS connection"); 8116 } 8117 break; 8118 case WifiMonitor.WPS_TIMEOUT_EVENT: 8119 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 8120 WifiManager.WPS_TIMED_OUT); 8121 mSourceMessage.recycle(); 8122 mSourceMessage = null; 8123 transitionTo(mDisconnectedState); 8124 break; 8125 case WifiManager.START_WPS: 8126 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 8127 break; 8128 case WifiManager.CANCEL_WPS: 8129 if (mWifiNative.cancelWps()) { 8130 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 8131 } else { 8132 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 8133 } 8134 transitionTo(mDisconnectedState); 8135 break; 8136 /** 8137 * Defer all commands that can cause connections to a different network 8138 * or put the state machine out of connect mode 8139 */ 8140 case CMD_STOP_DRIVER: 8141 case CMD_SET_OPERATIONAL_MODE: 8142 case WifiManager.CONNECT_NETWORK: 8143 case CMD_ENABLE_NETWORK: 8144 case CMD_RECONNECT: 8145 case CMD_REASSOCIATE: 8146 deferMessage(message); 8147 break; 8148 case CMD_AUTO_CONNECT: 8149 case CMD_AUTO_ROAM: 8150 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8151 return HANDLED; 8152 case CMD_START_SCAN: 8153 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 8154 return HANDLED; 8155 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 8156 if (DBG) log("Network connection lost"); 8157 handleNetworkDisconnect(); 8158 break; 8159 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 8160 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 8161 break; 8162 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 8163 // Disregard auth failure events during WPS connection. The 8164 // EAP sequence is retried several times, and there might be 8165 // failures (especially for wps pin). We will get a WPS_XXX 8166 // event at the end of the sequence anyway. 8167 if (DBG) log("Ignore auth failure during WPS connection"); 8168 break; 8169 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 8170 // Throw away supplicant state changes when WPS is running. 8171 // We will start getting supplicant state changes once we get 8172 // a WPS success or failure 8173 break; 8174 default: 8175 return NOT_HANDLED; 8176 } 8177 return HANDLED; 8178 } 8179 8180 @Override 8181 public void exit() { 8182 mWifiConfigStore.enableAllNetworks(); 8183 mWifiConfigStore.loadConfiguredNetworks(); 8184 } 8185 } 8186 8187 class SoftApStartingState extends State { 8188 @Override 8189 public void enter() { 8190 final Message message = getCurrentMessage(); 8191 if (message.what == CMD_START_AP) { 8192 final WifiConfiguration config = (WifiConfiguration) message.obj; 8193 8194 if (config == null) { 8195 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 8196 } else { 8197 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 8198 startSoftApWithConfig(config); 8199 } 8200 } else { 8201 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 8202 } 8203 } 8204 @Override 8205 public boolean processMessage(Message message) { 8206 logStateAndMessage(message, getClass().getSimpleName()); 8207 8208 switch(message.what) { 8209 case CMD_START_SUPPLICANT: 8210 case CMD_STOP_SUPPLICANT: 8211 case CMD_START_AP: 8212 case CMD_STOP_AP: 8213 case CMD_START_DRIVER: 8214 case CMD_STOP_DRIVER: 8215 case CMD_SET_OPERATIONAL_MODE: 8216 case CMD_SET_COUNTRY_CODE: 8217 case CMD_SET_FREQUENCY_BAND: 8218 case CMD_START_PACKET_FILTERING: 8219 case CMD_STOP_PACKET_FILTERING: 8220 case CMD_TETHER_STATE_CHANGE: 8221 deferMessage(message); 8222 break; 8223 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 8224 WifiConfiguration config = (WifiConfiguration) message.obj; 8225 if (config != null) { 8226 startSoftApWithConfig(config); 8227 } else { 8228 loge("Softap config is null!"); 8229 sendMessage(CMD_START_AP_FAILURE); 8230 } 8231 break; 8232 case CMD_START_AP_SUCCESS: 8233 setWifiApState(WIFI_AP_STATE_ENABLED); 8234 transitionTo(mSoftApStartedState); 8235 break; 8236 case CMD_START_AP_FAILURE: 8237 setWifiApState(WIFI_AP_STATE_FAILED); 8238 transitionTo(mInitialState); 8239 break; 8240 default: 8241 return NOT_HANDLED; 8242 } 8243 return HANDLED; 8244 } 8245 } 8246 8247 class SoftApStartedState extends State { 8248 @Override 8249 public boolean processMessage(Message message) { 8250 logStateAndMessage(message, getClass().getSimpleName()); 8251 8252 switch(message.what) { 8253 case CMD_STOP_AP: 8254 if (DBG) log("Stopping Soft AP"); 8255 /* We have not tethered at this point, so we just shutdown soft Ap */ 8256 try { 8257 mNwService.stopAccessPoint(mInterfaceName); 8258 } catch(Exception e) { 8259 loge("Exception in stopAccessPoint()"); 8260 } 8261 setWifiApState(WIFI_AP_STATE_DISABLED); 8262 transitionTo(mInitialState); 8263 break; 8264 case CMD_START_AP: 8265 // Ignore a start on a running access point 8266 break; 8267 // Fail client mode operation when soft AP is enabled 8268 case CMD_START_SUPPLICANT: 8269 loge("Cannot start supplicant with a running soft AP"); 8270 setWifiState(WIFI_STATE_UNKNOWN); 8271 break; 8272 case CMD_TETHER_STATE_CHANGE: 8273 TetherStateChange stateChange = (TetherStateChange) message.obj; 8274 if (startTethering(stateChange.available)) { 8275 transitionTo(mTetheringState); 8276 } 8277 break; 8278 default: 8279 return NOT_HANDLED; 8280 } 8281 return HANDLED; 8282 } 8283 } 8284 8285 class TetheringState extends State { 8286 @Override 8287 public void enter() { 8288 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8289 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8290 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8291 } 8292 @Override 8293 public boolean processMessage(Message message) { 8294 logStateAndMessage(message, getClass().getSimpleName()); 8295 8296 switch(message.what) { 8297 case CMD_TETHER_STATE_CHANGE: 8298 TetherStateChange stateChange = (TetherStateChange) message.obj; 8299 if (isWifiTethered(stateChange.active)) { 8300 transitionTo(mTetheredState); 8301 } 8302 return HANDLED; 8303 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8304 if (message.arg1 == mTetherToken) { 8305 loge("Failed to get tether update, shutdown soft access point"); 8306 transitionTo(mSoftApStartedState); 8307 // Needs to be first thing handled 8308 sendMessageAtFrontOfQueue(CMD_STOP_AP); 8309 } 8310 break; 8311 case CMD_START_SUPPLICANT: 8312 case CMD_STOP_SUPPLICANT: 8313 case CMD_START_AP: 8314 case CMD_STOP_AP: 8315 case CMD_START_DRIVER: 8316 case CMD_STOP_DRIVER: 8317 case CMD_SET_OPERATIONAL_MODE: 8318 case CMD_SET_COUNTRY_CODE: 8319 case CMD_SET_FREQUENCY_BAND: 8320 case CMD_START_PACKET_FILTERING: 8321 case CMD_STOP_PACKET_FILTERING: 8322 deferMessage(message); 8323 break; 8324 default: 8325 return NOT_HANDLED; 8326 } 8327 return HANDLED; 8328 } 8329 } 8330 8331 class TetheredState extends State { 8332 @Override 8333 public boolean processMessage(Message message) { 8334 logStateAndMessage(message, getClass().getSimpleName()); 8335 8336 switch(message.what) { 8337 case CMD_TETHER_STATE_CHANGE: 8338 TetherStateChange stateChange = (TetherStateChange) message.obj; 8339 if (!isWifiTethered(stateChange.active)) { 8340 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 8341 setHostApRunning(null, false); 8342 setHostApRunning(null, true); 8343 } 8344 return HANDLED; 8345 case CMD_STOP_AP: 8346 if (DBG) log("Untethering before stopping AP"); 8347 setWifiApState(WIFI_AP_STATE_DISABLING); 8348 stopTethering(); 8349 transitionTo(mUntetheringState); 8350 // More work to do after untethering 8351 deferMessage(message); 8352 break; 8353 default: 8354 return NOT_HANDLED; 8355 } 8356 return HANDLED; 8357 } 8358 } 8359 8360 class UntetheringState extends State { 8361 @Override 8362 public void enter() { 8363 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 8364 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 8365 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 8366 8367 } 8368 @Override 8369 public boolean processMessage(Message message) { 8370 logStateAndMessage(message, getClass().getSimpleName()); 8371 8372 switch(message.what) { 8373 case CMD_TETHER_STATE_CHANGE: 8374 TetherStateChange stateChange = (TetherStateChange) message.obj; 8375 8376 /* Wait till wifi is untethered */ 8377 if (isWifiTethered(stateChange.active)) break; 8378 8379 transitionTo(mSoftApStartedState); 8380 break; 8381 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 8382 if (message.arg1 == mTetherToken) { 8383 loge("Failed to get tether update, force stop access point"); 8384 transitionTo(mSoftApStartedState); 8385 } 8386 break; 8387 case CMD_START_SUPPLICANT: 8388 case CMD_STOP_SUPPLICANT: 8389 case CMD_START_AP: 8390 case CMD_STOP_AP: 8391 case CMD_START_DRIVER: 8392 case CMD_STOP_DRIVER: 8393 case CMD_SET_OPERATIONAL_MODE: 8394 case CMD_SET_COUNTRY_CODE: 8395 case CMD_SET_FREQUENCY_BAND: 8396 case CMD_START_PACKET_FILTERING: 8397 case CMD_STOP_PACKET_FILTERING: 8398 deferMessage(message); 8399 break; 8400 default: 8401 return NOT_HANDLED; 8402 } 8403 return HANDLED; 8404 } 8405 } 8406 8407 //State machine initiated requests can have replyTo set to null indicating 8408 //there are no recepients, we ignore those reply actions 8409 private void replyToMessage(Message msg, int what) { 8410 if (msg.replyTo == null) return; 8411 Message dstMsg = obtainMessageWithArg2(msg); 8412 dstMsg.what = what; 8413 mReplyChannel.replyToMessage(msg, dstMsg); 8414 } 8415 8416 private void replyToMessage(Message msg, int what, int arg1) { 8417 if (msg.replyTo == null) return; 8418 Message dstMsg = obtainMessageWithArg2(msg); 8419 dstMsg.what = what; 8420 dstMsg.arg1 = arg1; 8421 mReplyChannel.replyToMessage(msg, dstMsg); 8422 } 8423 8424 private void replyToMessage(Message msg, int what, Object obj) { 8425 if (msg.replyTo == null) return; 8426 Message dstMsg = obtainMessageWithArg2(msg); 8427 dstMsg.what = what; 8428 dstMsg.obj = obj; 8429 mReplyChannel.replyToMessage(msg, dstMsg); 8430 } 8431 8432 /** 8433 * arg2 on the source message has a unique id that needs to be retained in replies 8434 * to match the request 8435 8436 * see WifiManager for details 8437 */ 8438 private Message obtainMessageWithArg2(Message srcMsg) { 8439 Message msg = Message.obtain(); 8440 msg.arg2 = srcMsg.arg2; 8441 return msg; 8442 } 8443 8444 private static int parseHex(char ch) { 8445 if ('0' <= ch && ch <= '9') { 8446 return ch - '0'; 8447 } else if ('a' <= ch && ch <= 'f') { 8448 return ch - 'a' + 10; 8449 } else if ('A' <= ch && ch <= 'F') { 8450 return ch - 'A' + 10; 8451 } else { 8452 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 8453 } 8454 } 8455 8456 private byte[] parseHex(String hex) { 8457 /* This only works for good input; don't throw bad data at it */ 8458 if (hex == null) { 8459 return new byte[0]; 8460 } 8461 8462 if (hex.length() % 2 != 0) { 8463 throw new NumberFormatException(hex + " is not a valid hex string"); 8464 } 8465 8466 byte[] result = new byte[(hex.length())/2 + 1]; 8467 result[0] = (byte) ((hex.length())/2); 8468 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 8469 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 8470 byte b = (byte) (val & 0xFF); 8471 result[j] = b; 8472 } 8473 8474 return result; 8475 } 8476 8477 private static String makeHex(byte[] bytes) { 8478 StringBuilder sb = new StringBuilder(); 8479 for (byte b : bytes) { 8480 sb.append(String.format("%02x", b)); 8481 } 8482 return sb.toString(); 8483 } 8484 8485 private static String makeHex(byte[] bytes, int from, int len) { 8486 StringBuilder sb = new StringBuilder(); 8487 for (int i = 0; i < len; i++) { 8488 sb.append(String.format("%02x", bytes[from+i])); 8489 } 8490 return sb.toString(); 8491 } 8492 8493 8494 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 8495 8496 int len = array1.length + array2.length + array3.length; 8497 8498 if (array1.length != 0) { 8499 len++; /* add another byte for size */ 8500 } 8501 8502 if (array2.length != 0) { 8503 len++; /* add another byte for size */ 8504 } 8505 8506 if (array3.length != 0) { 8507 len++; /* add another byte for size */ 8508 } 8509 8510 byte[] result = new byte[len]; 8511 8512 int index = 0; 8513 if (array1.length != 0) { 8514 result[index] = (byte) (array1.length & 0xFF); 8515 index++; 8516 for (byte b : array1) { 8517 result[index] = b; 8518 index++; 8519 } 8520 } 8521 8522 if (array2.length != 0) { 8523 result[index] = (byte) (array2.length & 0xFF); 8524 index++; 8525 for (byte b : array2) { 8526 result[index] = b; 8527 index++; 8528 } 8529 } 8530 8531 if (array3.length != 0) { 8532 result[index] = (byte) (array3.length & 0xFF); 8533 index++; 8534 for (byte b : array3) { 8535 result[index] = b; 8536 index++; 8537 } 8538 } 8539 return result; 8540 } 8541 8542 void handleGsmAuthRequest(SimAuthRequestData requestData) { 8543 if (targetWificonfiguration == null 8544 || targetWificonfiguration.networkId == requestData.networkId) { 8545 logd("id matches targetWifiConfiguration"); 8546 } else { 8547 logd("id does not match targetWifiConfiguration"); 8548 return; 8549 } 8550 8551 TelephonyManager tm = (TelephonyManager) 8552 mContext.getSystemService(Context.TELEPHONY_SERVICE); 8553 8554 if (tm != null) { 8555 StringBuilder sb = new StringBuilder(); 8556 for (String challenge : requestData.challenges) { 8557 8558 logd("RAND = " + challenge); 8559 8560 byte[] rand = null; 8561 try { 8562 rand = parseHex(challenge); 8563 } catch (NumberFormatException e) { 8564 loge("malformed challenge"); 8565 continue; 8566 } 8567 8568 String base64Challenge = android.util.Base64.encodeToString( 8569 rand, android.util.Base64.NO_WRAP); 8570 /* 8571 * appType = 1 => SIM, 2 => USIM according to 8572 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 8573 */ 8574 int appType = 2; 8575 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 8576 logv("Raw Response - " + tmResponse); 8577 8578 if (tmResponse != null && tmResponse.length() > 4) { 8579 byte[] result = android.util.Base64.decode(tmResponse, 8580 android.util.Base64.DEFAULT); 8581 logv("Hex Response -" + makeHex(result)); 8582 int sres_len = result[0]; 8583 String sres = makeHex(result, 1, sres_len); 8584 int kc_offset = 1+sres_len; 8585 int kc_len = result[kc_offset]; 8586 String kc = makeHex(result, 1+kc_offset, kc_len); 8587 sb.append(":" + kc + ":" + sres); 8588 logv("kc:" + kc + " sres:" + sres); 8589 } else { 8590 loge("bad response - " + tmResponse); 8591 } 8592 } 8593 8594 String response = sb.toString(); 8595 logv("Supplicant Response -" + response); 8596 mWifiNative.simAuthResponse(requestData.networkId, response); 8597 } else { 8598 loge("could not get telephony manager"); 8599 } 8600 } 8601 8602 void handle3GAuthRequest(SimAuthRequestData requestData) { 8603 8604 } 8605} 8606