WifiStateMachine.java revision 82199a285f4a45a46b44eb8253999aa918534753
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_STATE_DISABLED; 20import static android.net.wifi.WifiManager.WIFI_STATE_DISABLING; 21import static android.net.wifi.WifiManager.WIFI_STATE_ENABLED; 22import static android.net.wifi.WifiManager.WIFI_STATE_ENABLING; 23import static android.net.wifi.WifiManager.WIFI_STATE_UNKNOWN; 24 25/** 26 * TODO: 27 * Deprecate WIFI_STATE_UNKNOWN 28 */ 29import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLED; 30import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLING; 31import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLED; 32import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLING; 33import static android.net.wifi.WifiManager.WIFI_AP_STATE_FAILED; 34 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.NetworkUtils; 57import android.net.RouteInfo; 58import android.net.StaticIpConfiguration; 59import android.net.TrafficStats; 60import android.net.wifi.*; 61import android.net.wifi.SupplicantState; 62import android.net.wifi.WpsResult.Status; 63import android.net.wifi.p2p.IWifiP2pManager; 64import android.os.BatteryStats; 65import android.os.Bundle; 66import android.os.IBinder; 67import android.os.INetworkManagementService; 68import android.os.Looper; 69import android.os.Message; 70import android.os.Messenger; 71import android.os.PowerManager; 72import android.os.Process; 73import android.os.RemoteException; 74import android.os.ServiceManager; 75import android.os.SystemClock; 76import android.os.SystemProperties; 77import android.os.UserHandle; 78import android.os.WorkSource; 79import android.provider.Settings; 80import android.telephony.TelephonyManager; 81import android.util.LruCache; 82import android.text.TextUtils; 83import android.util.Log; 84 85import com.android.internal.R; 86import com.android.internal.app.IBatteryStats; 87import com.android.internal.util.AsyncChannel; 88import com.android.internal.util.Protocol; 89import com.android.internal.util.State; 90import com.android.internal.util.StateMachine; 91import com.android.server.net.BaseNetworkObserver; 92import com.android.server.net.NetlinkTracker; 93 94import com.android.server.wifi.p2p.WifiP2pServiceImpl; 95 96import java.io.FileDescriptor; 97import java.io.PrintWriter; 98import java.net.InetAddress; 99import java.util.*; 100import java.util.concurrent.atomic.AtomicInteger; 101import java.util.concurrent.atomic.AtomicBoolean; 102import java.util.regex.Pattern; 103import java.io.FileReader; 104import java.io.BufferedReader; 105import java.io.FileNotFoundException; 106import java.io.IOException; 107import java.net.Inet4Address; 108 109/** 110 * Track the state of Wifi connectivity. All event handling is done here, 111 * and all changes in connectivity state are initiated here. 112 * 113 * Wi-Fi now supports three modes of operation: Client, SoftAp and p2p 114 * In the current implementation, we support concurrent wifi p2p and wifi operation. 115 * The WifiStateMachine handles SoftAp and Client operations while WifiP2pService 116 * handles p2p operation. 117 * 118 * @hide 119 */ 120public class WifiStateMachine extends StateMachine { 121 122 private static final String NETWORKTYPE = "WIFI"; 123 private static boolean DBG = false; 124 private static boolean VDBG = false; 125 private static boolean mLogMessages = false; 126 127 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 128 129 private static final byte[] GOOGLE_OUI = new byte[] { 0x00, 0x1A, 0x11}; 130 131 /* temporary debug flag - best network selection development */ 132 private static boolean PDBG = false; 133 134 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 135 * the corresponding BSSID. 136 */ 137 private boolean didBlackListBSSID = false; 138 139 /** 140 * Log with error attribute 141 * 142 * @param s is string log 143 */ 144 protected void loge(String s) { 145 Log.e(getName(), s); 146 } 147 protected void log(String s) {; 148 Log.e(getName(), s); 149 } 150 151 private WifiMonitor mWifiMonitor; 152 private WifiNative mWifiNative; 153 private WifiConfigStore mWifiConfigStore; 154 private WifiAutoJoinController mWifiAutoJoinController; 155 private INetworkManagementService mNwService; 156 private ConnectivityManager mCm; 157 158 private final boolean mP2pSupported; 159 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 160 private boolean mTemporarilyDisconnectWifi = false; 161 private final String mPrimaryDeviceType; 162 163 /* Scan results handling */ 164 private List<ScanResult> mScanResults = new ArrayList<ScanResult>(); 165 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 166 private static final int SCAN_RESULT_CACHE_SIZE = 80; 167 private final LruCache<String, ScanResult> mScanResultCache; 168 // For debug, number of known scan results that were found as part of last scan result event 169 private int mNumScanResultsKnown; 170 171 /* Batch scan results */ 172 private final List<BatchedScanResult> mBatchedScanResults = 173 new ArrayList<BatchedScanResult>(); 174 private int mBatchedScanOwnerUid = UNKNOWN_SCAN_SOURCE; 175 private int mExpectedBatchedScans = 0; 176 private long mBatchedScanMinPollTime = 0; 177 178 private boolean mScreenOn = false; 179 180 /* Chipset supports background scan */ 181 private final boolean mBackgroundScanSupported; 182 183 private String mInterfaceName; 184 /* Tethering interface could be separate from wlan interface */ 185 private String mTetherInterfaceName; 186 187 private int mLastSignalLevel = -1; 188 private String mLastBssid; 189 private int mLastNetworkId; // The network Id we successfully joined 190 private boolean linkDebouncing = false; 191 192 // Testing various network disconnect cases by sending lots of spurious 193 // disconnect to supplicant 194 private boolean testNetworkDisconnect = false; 195 196 private boolean mEnableRssiPolling = false; 197 private boolean mEnableBackgroundScan = false; 198 private int mRssiPollToken = 0; 199 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 200 * In CONNECT_MODE, the STA can scan and connect to an access point 201 * In SCAN_ONLY_MODE, the STA can only scan for access points 202 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 203 */ 204 private int mOperationalMode = CONNECT_MODE; 205 private boolean mIsScanOngoing = false; 206 private boolean mIsFullScanOngoing = false; 207 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 208 private WorkSource mScanWorkSource = null; 209 private static final int UNKNOWN_SCAN_SOURCE = -1; 210 private static final int SCAN_ALARM_SOURCE = -2; 211 212 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 213 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 214 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 215 private static final String BATCHED_SETTING = "batched_settings"; 216 private static final String BATCHED_WORKSOURCE = "batched_worksource"; 217 218 /* Tracks if state machine has received any screen state change broadcast yet. 219 * We can miss one of these at boot. 220 */ 221 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 222 223 private boolean mBluetoothConnectionActive = false; 224 225 private PowerManager.WakeLock mSuspendWakeLock; 226 227 /** 228 * Interval in milliseconds between polling for RSSI 229 * and linkspeed information 230 */ 231 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 232 233 /** 234 * Interval in milliseconds between receiving a disconnect event 235 * while connected to a good AP, and handling the disconnect proper 236 */ 237 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 238 239 /** 240 * Delay between supplicant restarts upon failure to establish connection 241 */ 242 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 243 244 /** 245 * Number of times we attempt to restart supplicant 246 */ 247 private static final int SUPPLICANT_RESTART_TRIES = 5; 248 249 private int mSupplicantRestartCount = 0; 250 /* Tracks sequence number on stop failure message */ 251 private int mSupplicantStopFailureToken = 0; 252 253 /** 254 * Tether state change notification time out 255 */ 256 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 257 258 /* Tracks sequence number on a tether notification time out */ 259 private int mTetherToken = 0; 260 261 /** 262 * Driver start time out. 263 */ 264 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 265 266 /* Tracks sequence number on a driver time out */ 267 private int mDriverStartToken = 0; 268 269 /** 270 * The link properties of the wifi interface. 271 * Do not modify this directly; use updateLinkProperties instead. 272 */ 273 private LinkProperties mLinkProperties; 274 275 /* Tracks sequence number on a periodic scan message */ 276 private int mPeriodicScanToken = 0; 277 278 // Wakelock held during wifi start/stop and driver load/unload 279 private PowerManager.WakeLock mWakeLock; 280 281 private Context mContext; 282 283 private final Object mDhcpResultsLock = new Object(); 284 private DhcpResults mDhcpResults; 285 private WifiInfo mWifiInfo; 286 private NetworkInfo mNetworkInfo; 287 private NetworkCapabilities mNetworkCapabilities; 288 private SupplicantStateTracker mSupplicantStateTracker; 289 private DhcpStateMachine mDhcpStateMachine; 290 private boolean mDhcpActive = false; 291 292 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 293 294 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 295 296 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 297 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 298 299 // Roaming failure count 300 private int mRoamFailCount = 0; 301 302 private String mTargetRoamBSSID = "any"; 303 304 private WifiConfiguration targetWificonfiguration = null; 305 306 // Used as debug to indicate which configuration last was saved 307 private WifiConfiguration lastSavedConfigurationAttempt = null; 308 309 // Used as debug to indicate which configuration last was removed 310 private WifiConfiguration lastForgetConfigurationAttempt = null; 311 312 boolean isRoaming() { 313 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 314 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 315 } 316 317 public void autoRoamSetBSSID(int netId, String bssid) { 318 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 319 } 320 321 public void autoRoamSetBSSID(WifiConfiguration config, String bssid) { 322 mTargetRoamBSSID = "any"; 323 if (config == null || bssid == null) 324 return; 325 if (config.bssidOwnerUid == 0 || config.bssidOwnerUid == Process.WIFI_UID) { 326 if (VDBG) { 327 loge("autoRoamSetBSSID uid=" + Long.toString(config.bssidOwnerUid) 328 + " bssid=" + bssid 329 + " key=" + config.configKey()); 330 } 331 config.bssidOwnerUid = Process.WIFI_UID; 332 config.BSSID = bssid; 333 mTargetRoamBSSID = bssid; 334 } 335 } 336 337 /** 338 * Subset of link properties coming from netlink. 339 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 340 * and domains obtained from router advertisements (RFC 6106). 341 */ 342 private NetlinkTracker mNetlinkTracker; 343 344 private AlarmManager mAlarmManager; 345 private PendingIntent mScanIntent; 346 private PendingIntent mDriverStopIntent; 347 private PendingIntent mBatchedScanIntervalIntent; 348 349 /* Tracks current frequency mode */ 350 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 351 352 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 353 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 354 355 // Channel for sending replies. 356 private AsyncChannel mReplyChannel = new AsyncChannel(); 357 358 private WifiP2pServiceImpl mWifiP2pServiceImpl; 359 360 // Used to initiate a connection with WifiP2pService 361 private AsyncChannel mWifiP2pChannel; 362 private AsyncChannel mWifiApConfigChannel; 363 364 private WifiNetworkFactory mNetworkFactory; 365 private WifiNetworkAgent mNetworkAgent; 366 367 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 368 // We should really persist that into the networkHistory.txt file, and read it back when 369 // WifiStateMachine starts up 370 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 371 372 // Used to filter out requests we couldn't possibly satisfy. 373 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 374 375 /* The base for wifi message types */ 376 static final int BASE = Protocol.BASE_WIFI; 377 /* Start the supplicant */ 378 static final int CMD_START_SUPPLICANT = BASE + 11; 379 /* Stop the supplicant */ 380 static final int CMD_STOP_SUPPLICANT = BASE + 12; 381 /* Start the driver */ 382 static final int CMD_START_DRIVER = BASE + 13; 383 /* Stop the driver */ 384 static final int CMD_STOP_DRIVER = BASE + 14; 385 /* Indicates Static IP succeeded */ 386 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 387 /* Indicates Static IP failed */ 388 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 389 /* Indicates supplicant stop failed */ 390 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 391 /* Delayed stop to avoid shutting down driver too quick*/ 392 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 393 /* A delayed message sent to start driver when it fail to come up */ 394 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 395 396 /* Start the soft access point */ 397 static final int CMD_START_AP = BASE + 21; 398 /* Indicates soft ap start succeeded */ 399 static final int CMD_START_AP_SUCCESS = BASE + 22; 400 /* Indicates soft ap start failed */ 401 static final int CMD_START_AP_FAILURE = BASE + 23; 402 /* Stop the soft access point */ 403 static final int CMD_STOP_AP = BASE + 24; 404 /* Set the soft access point configuration */ 405 static final int CMD_SET_AP_CONFIG = BASE + 25; 406 /* Soft access point configuration set completed */ 407 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 408 /* Request the soft access point configuration */ 409 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 410 /* Response to access point configuration request */ 411 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 412 /* Invoked when getting a tether state change notification */ 413 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 414 /* A delayed message sent to indicate tether state change failed to arrive */ 415 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 416 417 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 418 419 /* Supplicant commands */ 420 /* Is supplicant alive ? */ 421 static final int CMD_PING_SUPPLICANT = BASE + 51; 422 /* Add/update a network configuration */ 423 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 424 /* Delete a network */ 425 static final int CMD_REMOVE_NETWORK = BASE + 53; 426 /* Enable a network. The device will attempt a connection to the given network. */ 427 static final int CMD_ENABLE_NETWORK = BASE + 54; 428 /* Enable all networks */ 429 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 430 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 431 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 432 /* Clear the blacklist network list */ 433 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 434 /* Save configuration */ 435 static final int CMD_SAVE_CONFIG = BASE + 58; 436 /* Get configured networks */ 437 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 438 /* Get available frequencies */ 439 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 440 /* Get adaptors */ 441 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 442 /* Get configured networks with real preSharedKey */ 443 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 444 /* Get Link Layer Stats thru HAL */ 445 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 446 /* Supplicant commands after driver start*/ 447 /* Initiate a scan */ 448 static final int CMD_START_SCAN = BASE + 71; 449 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 450 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 451 /* Disconnect from a network */ 452 static final int CMD_DISCONNECT = BASE + 73; 453 /* Reconnect to a network */ 454 static final int CMD_RECONNECT = BASE + 74; 455 /* Reassociate to a network */ 456 static final int CMD_REASSOCIATE = BASE + 75; 457 /* Get Connection Statistis */ 458 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 459 460 /* Controls suspend mode optimizations 461 * 462 * When high perf mode is enabled, suspend mode optimizations are disabled 463 * 464 * When high perf mode is disabled, suspend mode optimizations are enabled 465 * 466 * Suspend mode optimizations include: 467 * - packet filtering 468 * - turn off roaming 469 * - DTIM wake up settings 470 */ 471 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 472 /* Set the country code */ 473 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 474 /* Enables RSSI poll */ 475 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 476 /* RSSI poll */ 477 static final int CMD_RSSI_POLL = BASE + 83; 478 /* Set up packet filtering */ 479 static final int CMD_START_PACKET_FILTERING = BASE + 84; 480 /* Clear packet filter */ 481 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 482 /* Enable suspend mode optimizations in the driver */ 483 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 484 /* Delayed NETWORK_DISCONNECT */ 485 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 486 /* When there are no saved networks, we do a periodic scan to notify user of 487 * an open network */ 488 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 489 /* Test network Disconnection NETWORK_DISCONNECT */ 490 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 491 private int testNetworkDisconnectCounter = 0; 492 493 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 494 static final int MULTICAST_V6 = 1; 495 static final int MULTICAST_V4 = 0; 496 497 /* Set the frequency band */ 498 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 499 /* Enable background scan for configured networks */ 500 static final int CMD_ENABLE_BACKGROUND_SCAN = BASE + 91; 501 /* Enable TDLS on a specific MAC address */ 502 static final int CMD_ENABLE_TDLS = BASE + 92; 503 /* DHCP/IP configuration watchdog */ 504 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 505 506 /** 507 * Make this timer 40 seconds, which is about the normal DHCP timeout. 508 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 509 * for more than 30 seconds. 510 */ 511 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 512 513 int obtainingIpWatchdogCount = 0; 514 515 /* Commands from/to the SupplicantStateTracker */ 516 /* Reset the supplicant state tracker */ 517 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 518 519 520 /** 521 * Watchdog for protecting against b/16823537 522 * Leave time for 4-ways handshake to succeed 523 */ 524 static final int ROAM_GUARD_TIMER_MSEC = 15000; 525 526 int roamWatchdogCount = 0; 527 /* Roam state watchdog */ 528 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 529 /* Screen change intent handling */ 530 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 531 532 int disconnectingWatchdogCount = 0; 533 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 534 535 /* Disconnecting state watchdog */ 536 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 95; 537 538 /* P2p commands */ 539 /* We are ok with no response here since we wont do much with it anyway */ 540 public static final int CMD_ENABLE_P2P = BASE + 131; 541 /* In order to shut down supplicant cleanly, we wait till p2p has 542 * been disabled */ 543 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 544 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 545 546 public static final int CMD_BOOT_COMPLETED = BASE + 134; 547 548 /* change the batch scan settings. 549 * arg1 = responsible UID 550 * arg2 = csph (channel scans per hour) 551 * obj = bundle with the new settings and the optional worksource 552 */ 553 public static final int CMD_SET_BATCHED_SCAN = BASE + 135; 554 public static final int CMD_START_NEXT_BATCHED_SCAN = BASE + 136; 555 public static final int CMD_POLL_BATCHED_SCAN = BASE + 137; 556 557 /* We now have a valid IP configuration. */ 558 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 559 /* We no longer have a valid IP configuration. */ 560 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 561 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 562 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 563 564 /* Supplicant is trying to associate to a given BSSID */ 565 static final int CMD_TARGET_BSSID = BASE + 141; 566 567 /* Reload all networks and reconnect */ 568 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 569 570 static final int CMD_AUTO_CONNECT = BASE + 143; 571 572 static final int CMD_UNWANTED_NETWORK = BASE + 144; 573 574 static final int CMD_AUTO_ROAM = BASE + 145; 575 576 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 577 578 579 /* Wifi state machine modes of operation */ 580 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 581 public static final int CONNECT_MODE = 1; 582 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 583 public static final int SCAN_ONLY_MODE = 2; 584 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 585 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 586 587 private static final int SUCCESS = 1; 588 private static final int FAILURE = -1; 589 590 /* Tracks if suspend optimizations need to be disabled by DHCP, 591 * screen or due to high perf mode. 592 * When any of them needs to disable it, we keep the suspend optimizations 593 * disabled 594 */ 595 private int mSuspendOptNeedsDisabled = 0; 596 597 private static final int SUSPEND_DUE_TO_DHCP = 1; 598 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1<<1; 599 private static final int SUSPEND_DUE_TO_SCREEN = 1<<2; 600 601 /* Tracks if user has enabled suspend optimizations through settings */ 602 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 603 604 /** 605 * Default framework scan interval in milliseconds. This is used in the scenario in which 606 * wifi chipset does not support background scanning to set up a 607 * periodic wake up scan so that the device can connect to a new access 608 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 609 * override this. 610 */ 611 private final int mDefaultFrameworkScanIntervalMs; 612 613 private int mDisconnectedScanPeriodMs = 10000; 614 615 /** 616 * Supplicant scan interval in milliseconds. 617 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 618 * from the default config if the setting is not set 619 */ 620 private long mSupplicantScanIntervalMs; 621 622 /** 623 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 624 */ 625 private long lastFullBandConnectedTimeMilli; 626 627 /** 628 * time interval to the next full band scan we will perform for 629 * autojoin while connected with screen lit 630 */ 631 private long fullBandConnectedTimeIntervalMilli; 632 633 /** 634 * max time interval to the next full band scan we will perform for 635 * autojoin while connected with screen lit 636 * Max time is 5 minutes 637 */ 638 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 639 640 /** 641 * Minimum time interval between enabling all networks. 642 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 643 * due to enabling every time. We add a threshold to avoid this. 644 */ 645 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 646 private long mLastEnableAllNetworksTime; 647 648 /** 649 * Starting and shutting down driver too quick causes problems leading to driver 650 * being in a bad state. Delay driver stop. 651 */ 652 private final int mDriverStopDelayMs; 653 private int mDelayedStopCounter; 654 private boolean mInDelayedStop = false; 655 656 // sometimes telephony gives us this data before boot is complete and we can't store it 657 // until after, so the write is deferred 658 private volatile String mPersistedCountryCode; 659 660 // Supplicant doesn't like setting the same country code multiple times (it may drop 661 // currently connected network), so we save the country code here to avoid redundency 662 private String mLastSetCountryCode; 663 664 /* Default parent state */ 665 private State mDefaultState = new DefaultState(); 666 /* Temporary initial state */ 667 private State mInitialState = new InitialState(); 668 /* Driver loaded, waiting for supplicant to start */ 669 private State mSupplicantStartingState = new SupplicantStartingState(); 670 /* Driver loaded and supplicant ready */ 671 private State mSupplicantStartedState = new SupplicantStartedState(); 672 /* Waiting for supplicant to stop and monitor to exit */ 673 private State mSupplicantStoppingState = new SupplicantStoppingState(); 674 /* Driver start issued, waiting for completed event */ 675 private State mDriverStartingState = new DriverStartingState(); 676 /* Driver started */ 677 private State mDriverStartedState = new DriverStartedState(); 678 /* Wait until p2p is disabled 679 * This is a special state which is entered right after we exit out of DriverStartedState 680 * before transitioning to another state. 681 */ 682 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 683 /* Driver stopping */ 684 private State mDriverStoppingState = new DriverStoppingState(); 685 /* Driver stopped */ 686 private State mDriverStoppedState = new DriverStoppedState(); 687 /* Scan for networks, no connection will be established */ 688 private State mScanModeState = new ScanModeState(); 689 /* Connecting to an access point */ 690 private State mConnectModeState = new ConnectModeState(); 691 /* Connected at 802.11 (L2) level */ 692 private State mL2ConnectedState = new L2ConnectedState(); 693 /* fetching IP after connection to access point (assoc+auth complete) */ 694 private State mObtainingIpState = new ObtainingIpState(); 695 /* Waiting for link quality verification to be complete */ 696 private State mVerifyingLinkState = new VerifyingLinkState(); 697 /* Connected with IP addr */ 698 private State mConnectedState = new ConnectedState(); 699 /* Roaming */ 700 private State mRoamingState = new RoamingState(); 701 /* disconnect issued, waiting for network disconnect confirmation */ 702 private State mDisconnectingState = new DisconnectingState(); 703 /* Network is not connected, supplicant assoc+auth is not complete */ 704 private State mDisconnectedState = new DisconnectedState(); 705 /* Waiting for WPS to be completed*/ 706 private State mWpsRunningState = new WpsRunningState(); 707 708 /* Soft ap is starting up */ 709 private State mSoftApStartingState = new SoftApStartingState(); 710 /* Soft ap is running */ 711 private State mSoftApStartedState = new SoftApStartedState(); 712 /* Soft ap is running and we are waiting for tether notification */ 713 private State mTetheringState = new TetheringState(); 714 /* Soft ap is running and we are tethered through connectivity service */ 715 private State mTetheredState = new TetheredState(); 716 /* Waiting for untether confirmation before stopping soft Ap */ 717 private State mUntetheringState = new UntetheringState(); 718 719 private class TetherStateChange { 720 ArrayList<String> available; 721 ArrayList<String> active; 722 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 723 available = av; 724 active = ac; 725 } 726 } 727 728 public static class SimAuthRequestData { 729 int networkId; 730 int protocol; 731 String ssid; 732 String[] challenges; 733 } 734 735 public static class SimAuthResponseData { 736 int id; 737 String Kc1; 738 String SRES1; 739 String Kc2; 740 String SRES2; 741 String Kc3; 742 String SRES3; 743 } 744 745 /** 746 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 747 * {@link WifiManager#WIFI_STATE_DISABLING}, 748 * {@link WifiManager#WIFI_STATE_ENABLED}, 749 * {@link WifiManager#WIFI_STATE_ENABLING}, 750 * {@link WifiManager#WIFI_STATE_UNKNOWN} 751 * 752 */ 753 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 754 755 /** 756 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 757 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 758 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 759 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 760 * {@link WifiManager#WIFI_AP_STATE_FAILED} 761 * 762 */ 763 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 764 765 private static final int SCAN_REQUEST = 0; 766 private static final String ACTION_START_SCAN = 767 "com.android.server.WifiManager.action.START_SCAN"; 768 769 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 770 private static final int DRIVER_STOP_REQUEST = 0; 771 private static final String ACTION_DELAYED_DRIVER_STOP = 772 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 773 774 private static final String ACTION_REFRESH_BATCHED_SCAN = 775 "com.android.server.WifiManager.action.REFRESH_BATCHED_SCAN"; 776 /** 777 * Keep track of whether WIFI is running. 778 */ 779 private boolean mIsRunning = false; 780 781 /** 782 * Keep track of whether we last told the battery stats we had started. 783 */ 784 private boolean mReportedRunning = false; 785 786 /** 787 * Most recently set source of starting WIFI. 788 */ 789 private final WorkSource mRunningWifiUids = new WorkSource(); 790 791 /** 792 * The last reported UIDs that were responsible for starting WIFI. 793 */ 794 private final WorkSource mLastRunningWifiUids = new WorkSource(); 795 796 private final IBatteryStats mBatteryStats; 797 798 private BatchedScanSettings mBatchedScanSettings = null; 799 800 /** 801 * Track the worksource/cost of the current settings and track what's been noted 802 * to the battery stats, so we can mark the end of the previous when changing. 803 */ 804 private WorkSource mBatchedScanWorkSource = null; 805 private int mBatchedScanCsph = 0; 806 private WorkSource mNotedBatchedScanWorkSource = null; 807 private int mNotedBatchedScanCsph = 0; 808 809 private String mTcpBufferSizes = null; 810 811 // Used for debug and stats gathering 812 private static int sScanAlarmIntentCount = 0; 813 814 public WifiStateMachine(Context context, String wlanInterface, 815 WifiTrafficPoller trafficPoller){ 816 super("WifiStateMachine"); 817 mContext = context; 818 mInterfaceName = wlanInterface; 819 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 820 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 821 BatteryStats.SERVICE_NAME)); 822 823 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 824 mNwService = INetworkManagementService.Stub.asInterface(b); 825 826 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 827 PackageManager.FEATURE_WIFI_DIRECT); 828 829 mWifiNative = new WifiNative(mInterfaceName); 830 mWifiConfigStore = new WifiConfigStore(context, mWifiNative); 831 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 832 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 833 mWifiMonitor = new WifiMonitor(this, mWifiNative); 834 mWifiInfo = new WifiInfo(); 835 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 836 getHandler()); 837 mLinkProperties = new LinkProperties(); 838 839 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 840 mWifiP2pServiceImpl = (WifiP2pServiceImpl)IWifiP2pManager.Stub.asInterface(s1); 841 842 mNetworkInfo.setIsAvailable(false); 843 mLastBssid = null; 844 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 845 mLastSignalLevel = -1; 846 847 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 848 public void update() { 849 sendMessage(CMD_UPDATE_LINKPROPERTIES); 850 } 851 }); 852 try { 853 mNwService.registerObserver(mNetlinkTracker); 854 } catch (RemoteException e) { 855 loge("Couldn't register netlink tracker: " + e.toString()); 856 } 857 858 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 859 Intent scanIntent = new Intent(ACTION_START_SCAN, null); 860 mScanIntent = PendingIntent.getBroadcast(mContext, SCAN_REQUEST, scanIntent, 0); 861 862 Intent batchedIntent = new Intent(ACTION_REFRESH_BATCHED_SCAN, null); 863 mBatchedScanIntervalIntent = PendingIntent.getBroadcast(mContext, 0, batchedIntent, 0); 864 865 mDefaultFrameworkScanIntervalMs = mContext.getResources().getInteger( 866 R.integer.config_wifi_framework_scan_interval); 867 868 mDriverStopDelayMs = mContext.getResources().getInteger( 869 R.integer.config_wifi_driver_stop_delay); 870 871 mBackgroundScanSupported = mContext.getResources().getBoolean( 872 R.bool.config_wifi_background_scan_support); 873 874 mPrimaryDeviceType = mContext.getResources().getString( 875 R.string.config_wifi_p2p_device_type); 876 877 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 878 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 879 880 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 881 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 882 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 883 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 884 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 885 // TODO - needs to be a bit more dynamic 886 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 887 888 mContext.registerReceiver( 889 new BroadcastReceiver() { 890 @Override 891 public void onReceive(Context context, Intent intent) { 892 ArrayList<String> available = intent.getStringArrayListExtra( 893 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 894 ArrayList<String> active = intent.getStringArrayListExtra( 895 ConnectivityManager.EXTRA_ACTIVE_TETHER); 896 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 897 } 898 },new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 899 900 mContext.registerReceiver( 901 new BroadcastReceiver() { 902 @Override 903 public void onReceive(Context context, Intent intent) { 904 sScanAlarmIntentCount++; 905 startScan(SCAN_ALARM_SOURCE, null, null); 906 if (VDBG) 907 loge("WiFiStateMachine SCAN ALARM"); 908 } 909 }, 910 new IntentFilter(ACTION_START_SCAN)); 911 912 IntentFilter filter = new IntentFilter(); 913 filter.addAction(Intent.ACTION_SCREEN_ON); 914 filter.addAction(Intent.ACTION_SCREEN_OFF); 915 filter.addAction(ACTION_REFRESH_BATCHED_SCAN); 916 mContext.registerReceiver( 917 new BroadcastReceiver() { 918 @Override 919 public void onReceive(Context context, Intent intent) { 920 String action = intent.getAction(); 921 922 if (action.equals(Intent.ACTION_SCREEN_ON)) { 923 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 924 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 925 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 926 } else if (action.equals(ACTION_REFRESH_BATCHED_SCAN)) { 927 startNextBatchedScanAsync(); 928 } 929 } 930 }, filter); 931 932 mContext.registerReceiver( 933 new BroadcastReceiver() { 934 @Override 935 public void onReceive(Context context, Intent intent) { 936 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 937 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 938 } 939 }, 940 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 941 942 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 943 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 944 new ContentObserver(getHandler()) { 945 @Override 946 public void onChange(boolean selfChange) { 947 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 948 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 949 } 950 }); 951 952 mContext.registerReceiver( 953 new BroadcastReceiver() { 954 @Override 955 public void onReceive(Context context, Intent intent) { 956 sendMessage(CMD_BOOT_COMPLETED); 957 } 958 }, 959 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 960 961 mScanResultCache = new LruCache<String, ScanResult>(SCAN_RESULT_CACHE_SIZE); 962 963 PowerManager powerManager = (PowerManager)mContext.getSystemService(Context.POWER_SERVICE); 964 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 965 966 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 967 mSuspendWakeLock.setReferenceCounted(false); 968 969 mTcpBufferSizes = mContext.getResources().getString( 970 com.android.internal.R.string.config_wifi_tcp_buffers); 971 972 addState(mDefaultState); 973 addState(mInitialState, mDefaultState); 974 addState(mSupplicantStartingState, mDefaultState); 975 addState(mSupplicantStartedState, mDefaultState); 976 addState(mDriverStartingState, mSupplicantStartedState); 977 addState(mDriverStartedState, mSupplicantStartedState); 978 addState(mScanModeState, mDriverStartedState); 979 addState(mConnectModeState, mDriverStartedState); 980 addState(mL2ConnectedState, mConnectModeState); 981 addState(mObtainingIpState, mL2ConnectedState); 982 addState(mVerifyingLinkState, mL2ConnectedState); 983 addState(mConnectedState, mL2ConnectedState); 984 addState(mRoamingState, mL2ConnectedState); 985 addState(mDisconnectingState, mConnectModeState); 986 addState(mDisconnectedState, mConnectModeState); 987 addState(mWpsRunningState, mConnectModeState); 988 addState(mWaitForP2pDisableState, mSupplicantStartedState); 989 addState(mDriverStoppingState, mSupplicantStartedState); 990 addState(mDriverStoppedState, mSupplicantStartedState); 991 addState(mSupplicantStoppingState, mDefaultState); 992 addState(mSoftApStartingState, mDefaultState); 993 addState(mSoftApStartedState, mDefaultState); 994 addState(mTetheringState, mSoftApStartedState); 995 addState(mTetheredState, mSoftApStartedState); 996 addState(mUntetheringState, mSoftApStartedState); 997 998 setInitialState(mInitialState); 999 1000 setLogRecSize(3000); 1001 setLogOnlyTransitions(false); 1002 if (VDBG) setDbg(true); 1003 1004 //start the state machine 1005 start(); 1006 1007 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1008 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1009 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1010 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1011 } 1012 1013 private int mVerboseLoggingLevel = 0; 1014 1015 int getVerboseLoggingLevel() { 1016 return mVerboseLoggingLevel; 1017 } 1018 1019 void enableVerboseLogging(int verbose) { 1020 mVerboseLoggingLevel = verbose; 1021 if (verbose > 0) { 1022 DBG = true; 1023 VDBG = true; 1024 PDBG = true; 1025 mLogMessages = true; 1026 mWifiNative.setSupplicantLogLevel("DEBUG"); 1027 } else { 1028 DBG = false; 1029 VDBG = false; 1030 PDBG = false; 1031 mLogMessages = false; 1032 mWifiNative.setSupplicantLogLevel("INFO"); 1033 } 1034 mWifiAutoJoinController.enableVerboseLogging(verbose); 1035 mWifiMonitor.enableVerboseLogging(verbose); 1036 mWifiNative.enableVerboseLogging(verbose); 1037 mWifiConfigStore.enableVerboseLogging(verbose); 1038 mSupplicantStateTracker.enableVerboseLogging(verbose); 1039 } 1040 1041 private int mAggressiveHandover = 0; 1042 1043 int getAggressiveHandover() { 1044 return mAggressiveHandover; 1045 } 1046 1047 void enableAggressiveHandover(int enabled) { 1048 mAggressiveHandover = enabled; 1049 } 1050 1051 private int mAllowScansWithTraffic = 0; 1052 1053 public void setAllowScansWithTraffic(int enabled) { 1054 mAllowScansWithTraffic = enabled; 1055 } 1056 1057 public int getAllowScansWithTraffic() { 1058 return mAllowScansWithTraffic; 1059 } 1060 1061 /* 1062 * 1063 * Framework scan control 1064 */ 1065 1066 private boolean mAlarmEnabled = false; 1067 /* This is set from the overlay config file or from a secure setting. 1068 * A value of 0 disables scanning in the framework. 1069 */ 1070 private long mFrameworkScanIntervalMs = 10000; 1071 1072 private long mCurrentScanAlarmMs = 10000; 1073 private void setScanAlarm(boolean enabled) { 1074 if (PDBG) { 1075 loge("setScanAlarm " + enabled + " period " + mCurrentScanAlarmMs); 1076 } 1077 if (mCurrentScanAlarmMs <= 0) enabled = false; 1078 if (enabled == mAlarmEnabled) return; 1079 if (enabled) { 1080 mAlarmManager.setRepeating(AlarmManager.RTC_WAKEUP, 1081 System.currentTimeMillis() + mCurrentScanAlarmMs, 1082 mCurrentScanAlarmMs, 1083 mScanIntent); 1084 mAlarmEnabled = true; 1085 } else { 1086 mAlarmManager.cancel(mScanIntent); 1087 mAlarmEnabled = false; 1088 } 1089 } 1090 1091 /********************************************************* 1092 * Methods exposed for public use 1093 ********************************************************/ 1094 1095 public Messenger getMessenger() { 1096 return new Messenger(getHandler()); 1097 } 1098 1099 public WifiMonitor getWifiMonitor() { 1100 return mWifiMonitor; 1101 } 1102 1103 /** 1104 * TODO: doc 1105 */ 1106 public boolean syncPingSupplicant(AsyncChannel channel) { 1107 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1108 boolean result = (resultMsg.arg1 != FAILURE); 1109 resultMsg.recycle(); 1110 return result; 1111 } 1112 1113 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1114 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1115 List<WifiChannel> list = null; 1116 if (resultMsg.obj != null) { 1117 list = new ArrayList<WifiChannel>(); 1118 String freqs = (String) resultMsg.obj; 1119 String[] lines = freqs.split("\n"); 1120 for (String line : lines) 1121 if (line.contains("MHz")) { 1122 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1123 WifiChannel c = new WifiChannel(); 1124 String[] prop = line.split(" "); 1125 if (prop.length < 5) continue; 1126 try { 1127 c.channelNum = Integer.parseInt(prop[1]); 1128 c.freqMHz = Integer.parseInt(prop[3]); 1129 } catch (NumberFormatException e) { } 1130 c.isDFS = line.contains("(DFS)"); 1131 list.add(c); 1132 } else if (line.contains("Mode[B] Channels:")) { 1133 // B channels are the same as G channels, skipped 1134 break; 1135 } 1136 } 1137 resultMsg.recycle(); 1138 return (list != null && list.size() > 0) ? list : null; 1139 } 1140 1141 1142 /** 1143 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1144 * given to callingUid. 1145 * 1146 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1147 * workSource is specified. 1148 * @param workSource If not null, blame is given to workSource. 1149 * @param settings Scan settings, see {@link ScanSettings}. 1150 */ 1151 public void startScan(int callingUid, ScanSettings settings, WorkSource workSource) { 1152 Bundle bundle = new Bundle(); 1153 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1154 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1155 sendMessage(CMD_START_SCAN, callingUid, 0, bundle); 1156 } 1157 1158 /** 1159 * start or stop batched scanning using the given settings 1160 */ 1161 public void setBatchedScanSettings(BatchedScanSettings settings, int callingUid, int csph, 1162 WorkSource workSource) { 1163 Bundle bundle = new Bundle(); 1164 bundle.putParcelable(BATCHED_SETTING, settings); 1165 bundle.putParcelable(BATCHED_WORKSOURCE, workSource); 1166 sendMessage(CMD_SET_BATCHED_SCAN, callingUid, csph, bundle); 1167 } 1168 1169 public List<BatchedScanResult> syncGetBatchedScanResultsList() { 1170 synchronized (mBatchedScanResults) { 1171 List<BatchedScanResult> batchedScanList = 1172 new ArrayList<BatchedScanResult>(mBatchedScanResults.size()); 1173 for(BatchedScanResult result: mBatchedScanResults) { 1174 batchedScanList.add(new BatchedScanResult(result)); 1175 } 1176 return batchedScanList; 1177 } 1178 } 1179 1180 public void requestBatchedScanPoll() { 1181 sendMessage(CMD_POLL_BATCHED_SCAN); 1182 } 1183 1184 private void startBatchedScan() { 1185 if (mBatchedScanSettings == null) return; 1186 1187 if (mDhcpActive) { 1188 if (DBG) log("not starting Batched Scans due to DHCP"); 1189 return; 1190 } 1191 1192 // first grab any existing data 1193 retrieveBatchedScanData(); 1194 1195 if (PDBG) loge("try starting Batched Scans due to DHCP"); 1196 1197 1198 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1199 1200 String scansExpected = mWifiNative.setBatchedScanSettings(mBatchedScanSettings); 1201 try { 1202 mExpectedBatchedScans = Integer.parseInt(scansExpected); 1203 setNextBatchedAlarm(mExpectedBatchedScans); 1204 if (mExpectedBatchedScans > 0) noteBatchedScanStart(); 1205 } catch (NumberFormatException e) { 1206 stopBatchedScan(); 1207 loge("Exception parsing WifiNative.setBatchedScanSettings response " + e); 1208 } 1209 } 1210 1211 // called from BroadcastListener 1212 private void startNextBatchedScanAsync() { 1213 sendMessage(CMD_START_NEXT_BATCHED_SCAN); 1214 } 1215 1216 private void startNextBatchedScan() { 1217 // first grab any existing data 1218 retrieveBatchedScanData(); 1219 1220 setNextBatchedAlarm(mExpectedBatchedScans); 1221 } 1222 1223 private void handleBatchedScanPollRequest() { 1224 if (DBG) { 1225 log("handleBatchedScanPoll Request - mBatchedScanMinPollTime=" + 1226 mBatchedScanMinPollTime + " , mBatchedScanSettings=" + 1227 mBatchedScanSettings); 1228 } 1229 // if there is no appropriate PollTime that's because we either aren't 1230 // batching or we've already set a time for a poll request 1231 if (mBatchedScanMinPollTime == 0) return; 1232 if (mBatchedScanSettings == null) return; 1233 1234 long now = System.currentTimeMillis(); 1235 1236 if (now > mBatchedScanMinPollTime) { 1237 // do the poll and reset our timers 1238 startNextBatchedScan(); 1239 } else { 1240 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, mBatchedScanMinPollTime, 1241 mBatchedScanIntervalIntent); 1242 mBatchedScanMinPollTime = 0; 1243 } 1244 } 1245 1246 // return true if new/different 1247 private boolean recordBatchedScanSettings(int responsibleUid, int csph, Bundle bundle) { 1248 BatchedScanSettings settings = bundle.getParcelable(BATCHED_SETTING); 1249 WorkSource responsibleWorkSource = bundle.getParcelable(BATCHED_WORKSOURCE); 1250 1251 if (DBG) { 1252 log("set batched scan to " + settings + " for uid=" + responsibleUid + 1253 ", worksource=" + responsibleWorkSource); 1254 } 1255 if (settings != null) { 1256 if (settings.equals(mBatchedScanSettings)) return false; 1257 } else { 1258 if (mBatchedScanSettings == null) return false; 1259 } 1260 mBatchedScanSettings = settings; 1261 if (responsibleWorkSource == null) responsibleWorkSource = new WorkSource(responsibleUid); 1262 mBatchedScanWorkSource = responsibleWorkSource; 1263 mBatchedScanCsph = csph; 1264 return true; 1265 } 1266 1267 private void stopBatchedScan() { 1268 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1269 retrieveBatchedScanData(); 1270 mWifiNative.setBatchedScanSettings(null); 1271 noteBatchedScanStop(); 1272 } 1273 1274 private void setNextBatchedAlarm(int scansExpected) { 1275 1276 if (mBatchedScanSettings == null || scansExpected < 1) return; 1277 1278 mBatchedScanMinPollTime = System.currentTimeMillis() + 1279 mBatchedScanSettings.scanIntervalSec * 1000; 1280 1281 if (mBatchedScanSettings.maxScansPerBatch < scansExpected) { 1282 scansExpected = mBatchedScanSettings.maxScansPerBatch; 1283 } 1284 1285 int secToFull = mBatchedScanSettings.scanIntervalSec; 1286 secToFull *= scansExpected; 1287 1288 int debugPeriod = SystemProperties.getInt("wifi.batchedScan.pollPeriod", 0); 1289 if (debugPeriod > 0) secToFull = debugPeriod; 1290 1291 // set the alarm to do the next poll. We set it a little short as we'd rather 1292 // wake up wearly than miss a scan due to buffer overflow 1293 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 1294 + ((secToFull - (mBatchedScanSettings.scanIntervalSec / 2)) * 1000), 1295 mBatchedScanIntervalIntent); 1296 } 1297 1298 /** 1299 * Start reading new scan data 1300 * Data comes in as: 1301 * "scancount=5\n" 1302 * "nextcount=5\n" 1303 * "apcount=3\n" 1304 * "trunc\n" (optional) 1305 * "bssid=...\n" 1306 * "ssid=...\n" 1307 * "freq=...\n" (in Mhz) 1308 * "level=...\n" 1309 * "dist=...\n" (in cm) 1310 * "distsd=...\n" (standard deviation, in cm) 1311 * "====" 1312 * "bssid=...\n" 1313 * etc 1314 * "====" 1315 * "bssid=...\n" 1316 * etc 1317 * "%%%%" 1318 * "apcount=2\n" 1319 * "bssid=...\n" 1320 * etc 1321 * "%%%% 1322 * etc 1323 * "----" 1324 */ 1325 private final static boolean DEBUG_PARSE = false; 1326 private void retrieveBatchedScanData() { 1327 String rawData = mWifiNative.getBatchedScanResults(); 1328 if (DEBUG_PARSE) log("rawData = " + rawData); 1329 mBatchedScanMinPollTime = 0; 1330 if (rawData == null || rawData.equalsIgnoreCase("OK")) { 1331 loge("Unexpected BatchedScanResults :" + rawData); 1332 return; 1333 } 1334 1335 int scanCount = 0; 1336 final String END_OF_BATCHES = "----"; 1337 final String SCANCOUNT = "scancount="; 1338 final String TRUNCATED = "trunc"; 1339 final String AGE = "age="; 1340 final String DIST = "dist="; 1341 final String DISTSD = "distSd="; 1342 1343 String splitData[] = rawData.split("\n"); 1344 int n = 0; 1345 if (splitData[n].startsWith(SCANCOUNT)) { 1346 try { 1347 scanCount = Integer.parseInt(splitData[n++].substring(SCANCOUNT.length())); 1348 } catch (NumberFormatException e) { 1349 loge("scancount parseInt Exception from " + splitData[n]); 1350 } 1351 } else log("scancount not found"); 1352 if (scanCount == 0) { 1353 loge("scanCount==0 - aborting"); 1354 return; 1355 } 1356 1357 final Intent intent = new Intent(WifiManager.BATCHED_SCAN_RESULTS_AVAILABLE_ACTION); 1358 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1359 1360 synchronized (mBatchedScanResults) { 1361 mBatchedScanResults.clear(); 1362 BatchedScanResult batchedScanResult = new BatchedScanResult(); 1363 1364 String bssid = null; 1365 WifiSsid wifiSsid = null; 1366 int level = 0; 1367 int freq = 0; 1368 int dist, distSd; 1369 long tsf = 0; 1370 dist = distSd = ScanResult.UNSPECIFIED; 1371 final long now = SystemClock.elapsedRealtime(); 1372 final int bssidStrLen = BSSID_STR.length(); 1373 1374 while (true) { 1375 while (n < splitData.length) { 1376 if (DEBUG_PARSE) logd("parsing " + splitData[n]); 1377 if (splitData[n].equals(END_OF_BATCHES)) { 1378 if (n+1 != splitData.length) { 1379 loge("didn't consume " + (splitData.length-n)); 1380 } 1381 if (mBatchedScanResults.size() > 0) { 1382 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1383 } 1384 logd("retrieveBatchedScanResults X"); 1385 return; 1386 } 1387 if ((splitData[n].equals(END_STR)) || splitData[n].equals(DELIMITER_STR)) { 1388 if (bssid != null) { 1389 batchedScanResult.scanResults.add(new ScanResult( 1390 wifiSsid, bssid, "", level, freq, tsf, dist, distSd)); 1391 wifiSsid = null; 1392 bssid = null; 1393 level = 0; 1394 freq = 0; 1395 tsf = 0; 1396 dist = distSd = ScanResult.UNSPECIFIED; 1397 } 1398 if (splitData[n].equals(END_STR)) { 1399 if (batchedScanResult.scanResults.size() != 0) { 1400 mBatchedScanResults.add(batchedScanResult); 1401 batchedScanResult = new BatchedScanResult(); 1402 } else { 1403 logd("Found empty batch"); 1404 } 1405 } 1406 } else if (splitData[n].equals(TRUNCATED)) { 1407 batchedScanResult.truncated = true; 1408 } else if (splitData[n].startsWith(BSSID_STR)) { 1409 bssid = new String(splitData[n].getBytes(), bssidStrLen, 1410 splitData[n].length() - bssidStrLen); 1411 } else if (splitData[n].startsWith(FREQ_STR)) { 1412 try { 1413 freq = Integer.parseInt(splitData[n].substring(FREQ_STR.length())); 1414 } catch (NumberFormatException e) { 1415 loge("Invalid freqency: " + splitData[n]); 1416 freq = 0; 1417 } 1418 } else if (splitData[n].startsWith(AGE)) { 1419 try { 1420 tsf = now - Long.parseLong(splitData[n].substring(AGE.length())); 1421 tsf *= 1000; // convert mS -> uS 1422 } catch (NumberFormatException e) { 1423 loge("Invalid timestamp: " + splitData[n]); 1424 tsf = 0; 1425 } 1426 } else if (splitData[n].startsWith(SSID_STR)) { 1427 wifiSsid = WifiSsid.createFromAsciiEncoded( 1428 splitData[n].substring(SSID_STR.length())); 1429 } else if (splitData[n].startsWith(LEVEL_STR)) { 1430 try { 1431 level = Integer.parseInt(splitData[n].substring(LEVEL_STR.length())); 1432 if (level > 0) level -= 256; 1433 } catch (NumberFormatException e) { 1434 loge("Invalid level: " + splitData[n]); 1435 level = 0; 1436 } 1437 } else if (splitData[n].startsWith(DIST)) { 1438 try { 1439 dist = Integer.parseInt(splitData[n].substring(DIST.length())); 1440 } catch (NumberFormatException e) { 1441 loge("Invalid distance: " + splitData[n]); 1442 dist = ScanResult.UNSPECIFIED; 1443 } 1444 } else if (splitData[n].startsWith(DISTSD)) { 1445 try { 1446 distSd = Integer.parseInt(splitData[n].substring(DISTSD.length())); 1447 } catch (NumberFormatException e) { 1448 loge("Invalid distanceSd: " + splitData[n]); 1449 distSd = ScanResult.UNSPECIFIED; 1450 } 1451 } else { 1452 loge("Unable to parse batched scan result line: " + splitData[n]); 1453 } 1454 n++; 1455 } 1456 rawData = mWifiNative.getBatchedScanResults(); 1457 if (DEBUG_PARSE) log("reading more data:\n" + rawData); 1458 if (rawData == null) { 1459 loge("Unexpected null BatchedScanResults"); 1460 return; 1461 } 1462 splitData = rawData.split("\n"); 1463 if (splitData.length == 0 || splitData[0].equals("ok")) { 1464 loge("batch scan results just ended!"); 1465 if (mBatchedScanResults.size() > 0) { 1466 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1467 } 1468 return; 1469 } 1470 n = 0; 1471 } 1472 } 1473 } 1474 1475 //keeping track of scan requests 1476 private long lastStartScanTimeStamp = 0; 1477 private long lastScanDuration = 0; 1478 //last connect attempt is used to prevent scan requests: 1479 // - for a period of 10 seconds after attempting to connect 1480 private long lastConnectAttempt = 0; 1481 private String lastScanFreqs = null; 1482 1483 //TODO: this is used only to track connection attempts, however the link state and packet per 1484 //TODO: second logic should be folded into that 1485 private boolean isScanAllowed() { 1486 long now = System.currentTimeMillis(); 1487 if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { 1488 return false; 1489 } 1490 return true; 1491 } 1492 1493 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1494 private void noteScanStart(int callingUid, WorkSource workSource) { 1495 long now = System.currentTimeMillis(); 1496 lastStartScanTimeStamp = now; 1497 lastScanDuration = 0; 1498 if (DBG) { 1499 String ts = String.format("[%,d ms]", now); 1500 if (workSource != null) { 1501 loge(ts + " noteScanStart" + workSource.toString() 1502 + " uid " + Integer.toString(callingUid)); 1503 } else { 1504 loge(ts + " noteScanstart no scan source"); 1505 } 1506 } 1507 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1508 && callingUid != SCAN_ALARM_SOURCE) 1509 || workSource != null)) { 1510 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1511 try { 1512 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 1513 } catch (RemoteException e) { 1514 log(e.toString()); 1515 } 1516 } 1517 } 1518 1519 private void noteScanEnd() { 1520 long now = System.currentTimeMillis(); 1521 if (lastStartScanTimeStamp != 0) { 1522 lastScanDuration = now - lastStartScanTimeStamp; 1523 } 1524 lastStartScanTimeStamp = 0; 1525 if (DBG) { 1526 String ts = String.format("[%,d ms]", now); 1527 1528 if (mScanWorkSource != null) 1529 loge(ts + " noteScanEnd " + mScanWorkSource.toString()); 1530 else 1531 loge(ts + " noteScanEnd no scan source"); 1532 } 1533 if (mScanWorkSource != null) { 1534 try { 1535 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1536 } catch (RemoteException e) { 1537 log(e.toString()); 1538 } finally { 1539 mScanWorkSource = null; 1540 } 1541 } 1542 } 1543 1544 private void noteBatchedScanStart() { 1545 if (PDBG) loge("noteBatchedScanstart()"); 1546 // note the end of a previous scan set 1547 if (mNotedBatchedScanWorkSource != null && 1548 (mNotedBatchedScanWorkSource.equals(mBatchedScanWorkSource) == false || 1549 mNotedBatchedScanCsph != mBatchedScanCsph)) { 1550 try { 1551 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1552 } catch (RemoteException e) { 1553 log(e.toString()); 1554 } finally { 1555 mNotedBatchedScanWorkSource = null; 1556 mNotedBatchedScanCsph = 0; 1557 } 1558 } 1559 // note the start of the new 1560 try { 1561 mBatteryStats.noteWifiBatchedScanStartedFromSource(mBatchedScanWorkSource, 1562 mBatchedScanCsph); 1563 mNotedBatchedScanWorkSource = mBatchedScanWorkSource; 1564 mNotedBatchedScanCsph = mBatchedScanCsph; 1565 } catch (RemoteException e) { 1566 log(e.toString()); 1567 } 1568 } 1569 1570 private void noteBatchedScanStop() { 1571 if (PDBG) loge("noteBatchedScanstop()"); 1572 1573 if (mNotedBatchedScanWorkSource != null) { 1574 try { 1575 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1576 } catch (RemoteException e) { 1577 log(e.toString()); 1578 } finally { 1579 mNotedBatchedScanWorkSource = null; 1580 mNotedBatchedScanCsph = 0; 1581 } 1582 } 1583 } 1584 1585 private void handleScanRequest(int type, Message message) { 1586 // unbundle parameters 1587 Bundle bundle = (Bundle) message.obj; 1588 ScanSettings settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1589 WorkSource workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1590 1591 // parse scan settings 1592 String freqs = null; 1593 if (settings != null && settings.channelSet != null) { 1594 StringBuilder sb = new StringBuilder(); 1595 boolean first = true; 1596 for (WifiChannel channel : settings.channelSet) { 1597 if (!first) sb.append(','); else first = false; 1598 sb.append(channel.freqMHz); 1599 } 1600 freqs = sb.toString(); 1601 } 1602 1603 // call wifi native to start the scan 1604 if (startScanNative(type, freqs)) { 1605 // only count battery consumption if scan request is accepted 1606 noteScanStart(message.arg1, workSource); 1607 // a full scan covers everything, clearing scan request buffer 1608 if (freqs == null) 1609 mBufferedScanMsg.clear(); 1610 return; 1611 } 1612 1613 // if reach here, scan request is rejected 1614 1615 if (!mIsScanOngoing) { 1616 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1617 // discard this request and pop up the next one 1618 if (mBufferedScanMsg.size() > 0) 1619 sendMessage(mBufferedScanMsg.remove()); 1620 } else if (!mIsFullScanOngoing) { 1621 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 1622 // buffer the scan request to make sure specified channels will be scanned eventually 1623 if (freqs == null) 1624 mBufferedScanMsg.clear(); 1625 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 1626 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, 0, bundle); 1627 mBufferedScanMsg.add(msg); 1628 } else { 1629 // if too many requests in buffer, combine them into a single full scan 1630 bundle = new Bundle(); 1631 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 1632 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1633 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, 0, bundle); 1634 mBufferedScanMsg.clear(); 1635 mBufferedScanMsg.add(msg); 1636 } 1637 } 1638 } 1639 1640 1641 /** return true iff scan request is accepted */ 1642 private boolean startScanNative(int type, String freqs) { 1643 if (mWifiNative.scan(type, freqs)) { 1644 mIsScanOngoing = true; 1645 mIsFullScanOngoing = (freqs == null); 1646 lastScanFreqs = freqs; 1647 return true; 1648 } 1649 return false; 1650 } 1651 1652 /** 1653 * TODO: doc 1654 */ 1655 public void setSupplicantRunning(boolean enable) { 1656 if (enable) { 1657 sendMessage(CMD_START_SUPPLICANT); 1658 } else { 1659 sendMessage(CMD_STOP_SUPPLICANT); 1660 } 1661 } 1662 1663 /** 1664 * TODO: doc 1665 */ 1666 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 1667 if (enable) { 1668 sendMessage(CMD_START_AP, wifiConfig); 1669 } else { 1670 sendMessage(CMD_STOP_AP); 1671 } 1672 } 1673 1674 public void setWifiApConfiguration(WifiConfiguration config) { 1675 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 1676 } 1677 1678 public WifiConfiguration syncGetWifiApConfiguration() { 1679 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 1680 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 1681 resultMsg.recycle(); 1682 return ret; 1683 } 1684 1685 /** 1686 * TODO: doc 1687 */ 1688 public int syncGetWifiState() { 1689 return mWifiState.get(); 1690 } 1691 1692 /** 1693 * TODO: doc 1694 */ 1695 public String syncGetWifiStateByName() { 1696 switch (mWifiState.get()) { 1697 case WIFI_STATE_DISABLING: 1698 return "disabling"; 1699 case WIFI_STATE_DISABLED: 1700 return "disabled"; 1701 case WIFI_STATE_ENABLING: 1702 return "enabling"; 1703 case WIFI_STATE_ENABLED: 1704 return "enabled"; 1705 case WIFI_STATE_UNKNOWN: 1706 return "unknown state"; 1707 default: 1708 return "[invalid state]"; 1709 } 1710 } 1711 1712 /** 1713 * TODO: doc 1714 */ 1715 public int syncGetWifiApState() { 1716 return mWifiApState.get(); 1717 } 1718 1719 /** 1720 * TODO: doc 1721 */ 1722 public String syncGetWifiApStateByName() { 1723 switch (mWifiApState.get()) { 1724 case WIFI_AP_STATE_DISABLING: 1725 return "disabling"; 1726 case WIFI_AP_STATE_DISABLED: 1727 return "disabled"; 1728 case WIFI_AP_STATE_ENABLING: 1729 return "enabling"; 1730 case WIFI_AP_STATE_ENABLED: 1731 return "enabled"; 1732 case WIFI_AP_STATE_FAILED: 1733 return "failed"; 1734 default: 1735 return "[invalid state]"; 1736 } 1737 } 1738 1739 /** 1740 * Get status information for the current connection, if any. 1741 * @return a {@link WifiInfo} object containing information about the current connection 1742 * 1743 */ 1744 public WifiInfo syncRequestConnectionInfo() { 1745 return mWifiInfo; 1746 } 1747 1748 public DhcpResults syncGetDhcpResults() { 1749 synchronized (mDhcpResultsLock) { 1750 return new DhcpResults(mDhcpResults); 1751 } 1752 } 1753 1754 /** 1755 * TODO: doc 1756 */ 1757 public void setDriverStart(boolean enable) { 1758 if (enable) { 1759 sendMessage(CMD_START_DRIVER); 1760 } else { 1761 sendMessage(CMD_STOP_DRIVER); 1762 } 1763 } 1764 1765 /** 1766 * TODO: doc 1767 */ 1768 public void setOperationalMode(int mode) { 1769 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 1770 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 1771 } 1772 1773 /** 1774 * TODO: doc 1775 */ 1776 public List<ScanResult> syncGetScanResultsList() { 1777 synchronized (mScanResultCache) { 1778 List<ScanResult> scanList = new ArrayList<ScanResult>(); 1779 for(ScanResult result: mScanResults) { 1780 scanList.add(new ScanResult(result)); 1781 } 1782 return scanList; 1783 } 1784 } 1785 1786 /** 1787 * Disconnect from Access Point 1788 */ 1789 public void disconnectCommand() { 1790 sendMessage(CMD_DISCONNECT); 1791 } 1792 1793 /** 1794 * Initiate a reconnection to AP 1795 */ 1796 public void reconnectCommand() { 1797 sendMessage(CMD_RECONNECT); 1798 } 1799 1800 /** 1801 * Initiate a re-association to AP 1802 */ 1803 public void reassociateCommand() { 1804 sendMessage(CMD_REASSOCIATE); 1805 } 1806 1807 /** 1808 * Reload networks and then reconnect; helps load correct data for TLS networks 1809 */ 1810 1811 public void reloadTlsNetworksAndReconnect() { 1812 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 1813 } 1814 1815 /** 1816 * Add a network synchronously 1817 * 1818 * @return network id of the new network 1819 */ 1820 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 1821 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 1822 int result = resultMsg.arg1; 1823 resultMsg.recycle(); 1824 return result; 1825 } 1826 1827 /** 1828 * Get configured networks synchronously 1829 * @param channel 1830 * @return 1831 */ 1832 1833 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 1834 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 1835 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 1836 resultMsg.recycle(); 1837 return result; 1838 } 1839 1840 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 1841 Message resultMsg = channel.sendMessageSynchronously( 1842 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 1843 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 1844 resultMsg.recycle(); 1845 return result; 1846 } 1847 1848 1849 /** 1850 * Get connection statistics synchronously 1851 * @param channel 1852 * @return 1853 */ 1854 1855 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 1856 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 1857 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 1858 resultMsg.recycle(); 1859 return result; 1860 } 1861 1862 /** 1863 * Get adaptors synchronously 1864 */ 1865 1866 public int syncGetSupportedFeatures(AsyncChannel channel) { 1867 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 1868 int supportedFeatureSet = resultMsg.arg1; 1869 resultMsg.recycle(); 1870 return supportedFeatureSet; 1871 } 1872 1873 /** 1874 * Get link layers stats for adapter synchronously 1875 */ 1876 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 1877 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 1878 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 1879 resultMsg.recycle(); 1880 return result; 1881 } 1882 1883 /** 1884 * Delete a network 1885 * 1886 * @param networkId id of the network to be removed 1887 */ 1888 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 1889 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 1890 boolean result = (resultMsg.arg1 != FAILURE); 1891 resultMsg.recycle(); 1892 return result; 1893 } 1894 1895 /** 1896 * Enable a network 1897 * 1898 * @param netId network id of the network 1899 * @param disableOthers true, if all other networks have to be disabled 1900 * @return {@code true} if the operation succeeds, {@code false} otherwise 1901 */ 1902 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 1903 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 1904 disableOthers ? 1 : 0); 1905 boolean result = (resultMsg.arg1 != FAILURE); 1906 resultMsg.recycle(); 1907 return result; 1908 } 1909 1910 /** 1911 * Disable a network 1912 * 1913 * @param netId network id of the network 1914 * @return {@code true} if the operation succeeds, {@code false} otherwise 1915 */ 1916 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 1917 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 1918 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 1919 resultMsg.recycle(); 1920 return result; 1921 } 1922 1923 /** 1924 * Retrieves a WPS-NFC configuration token for the specified network 1925 * @return a hex string representation of the WPS-NFC configuration token 1926 */ 1927 public String syncGetWpsNfcConfigurationToken(int netId) { 1928 return mWifiNative.getNfcWpsConfigurationToken(netId); 1929 } 1930 1931 /** 1932 * Blacklist a BSSID. This will avoid the AP if there are 1933 * alternate APs to connect 1934 * 1935 * @param bssid BSSID of the network 1936 */ 1937 public void addToBlacklist(String bssid) { 1938 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 1939 } 1940 1941 /** 1942 * Clear the blacklist list 1943 * 1944 */ 1945 public void clearBlacklist() { 1946 sendMessage(CMD_CLEAR_BLACKLIST); 1947 } 1948 1949 public void enableRssiPolling(boolean enabled) { 1950 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 1951 } 1952 1953 public void enableBackgroundScanCommand(boolean enabled) { 1954 sendMessage(CMD_ENABLE_BACKGROUND_SCAN, enabled ? 1 : 0, 0); 1955 } 1956 1957 public void enableAllNetworks() { 1958 sendMessage(CMD_ENABLE_ALL_NETWORKS); 1959 } 1960 1961 /** 1962 * Start filtering Multicast v4 packets 1963 */ 1964 public void startFilteringMulticastV4Packets() { 1965 mFilteringMulticastV4Packets.set(true); 1966 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 1967 } 1968 1969 /** 1970 * Stop filtering Multicast v4 packets 1971 */ 1972 public void stopFilteringMulticastV4Packets() { 1973 mFilteringMulticastV4Packets.set(false); 1974 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 1975 } 1976 1977 /** 1978 * Start filtering Multicast v4 packets 1979 */ 1980 public void startFilteringMulticastV6Packets() { 1981 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 1982 } 1983 1984 /** 1985 * Stop filtering Multicast v4 packets 1986 */ 1987 public void stopFilteringMulticastV6Packets() { 1988 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 1989 } 1990 1991 /** 1992 * Set high performance mode of operation. 1993 * Enabling would set active power mode and disable suspend optimizations; 1994 * disabling would set auto power mode and enable suspend optimizations 1995 * @param enable true if enable, false otherwise 1996 */ 1997 public void setHighPerfModeEnabled(boolean enable) { 1998 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 1999 } 2000 2001 /** 2002 * Set the country code 2003 * @param countryCode following ISO 3166 format 2004 * @param persist {@code true} if the setting should be remembered. 2005 */ 2006 public void setCountryCode(String countryCode, boolean persist) { 2007 // If it's a good country code, apply after the current 2008 // wifi connection is terminated; ignore resetting of code 2009 // for now (it is unclear what the chipset should do when 2010 // country code is reset) 2011 int countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2012 if (TextUtils.isEmpty(countryCode)) { 2013 log("Ignoring resetting of country code"); 2014 } else { 2015 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, countryCode); 2016 } 2017 } 2018 2019 /** 2020 * Set the operational frequency band 2021 * @param band 2022 * @param persist {@code true} if the setting should be remembered. 2023 */ 2024 public void setFrequencyBand(int band, boolean persist) { 2025 if (persist) { 2026 Settings.Global.putInt(mContext.getContentResolver(), 2027 Settings.Global.WIFI_FREQUENCY_BAND, 2028 band); 2029 } 2030 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2031 } 2032 2033 /** 2034 * Enable TDLS for a specific MAC address 2035 */ 2036 public void enableTdls(String remoteMacAddress, boolean enable) { 2037 int enabler = enable ? 1 : 0; 2038 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2039 } 2040 2041 /** 2042 * Returns the operational frequency band 2043 */ 2044 public int getFrequencyBand() { 2045 return mFrequencyBand.get(); 2046 } 2047 2048 /** 2049 * Returns the wifi configuration file 2050 */ 2051 public String getConfigFile() { 2052 return mWifiConfigStore.getConfigFile(); 2053 } 2054 2055 /** 2056 * Send a message indicating bluetooth adapter connection state changed 2057 */ 2058 public void sendBluetoothAdapterStateChange(int state) { 2059 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2060 } 2061 2062 /** 2063 * Save configuration on supplicant 2064 * 2065 * @return {@code true} if the operation succeeds, {@code false} otherwise 2066 * 2067 * TODO: deprecate this 2068 */ 2069 public boolean syncSaveConfig(AsyncChannel channel) { 2070 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2071 boolean result = (resultMsg.arg1 != FAILURE); 2072 resultMsg.recycle(); 2073 return result; 2074 } 2075 2076 public void updateBatteryWorkSource(WorkSource newSource) { 2077 synchronized (mRunningWifiUids) { 2078 try { 2079 if (newSource != null) { 2080 mRunningWifiUids.set(newSource); 2081 } 2082 if (mIsRunning) { 2083 if (mReportedRunning) { 2084 // If the work source has changed since last time, need 2085 // to remove old work from battery stats. 2086 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2087 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2088 mRunningWifiUids); 2089 mLastRunningWifiUids.set(mRunningWifiUids); 2090 } 2091 } else { 2092 // Now being started, report it. 2093 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2094 mLastRunningWifiUids.set(mRunningWifiUids); 2095 mReportedRunning = true; 2096 } 2097 } else { 2098 if (mReportedRunning) { 2099 // Last reported we were running, time to stop. 2100 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2101 mLastRunningWifiUids.clear(); 2102 mReportedRunning = false; 2103 } 2104 } 2105 mWakeLock.setWorkSource(newSource); 2106 } catch (RemoteException ignore) { 2107 } 2108 } 2109 } 2110 2111 @Override 2112 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2113 super.dump(fd, pw, args); 2114 mSupplicantStateTracker.dump(fd, pw, args); 2115 pw.println("mLinkProperties " + mLinkProperties); 2116 pw.println("mWifiInfo " + mWifiInfo); 2117 pw.println("mDhcpResults " + mDhcpResults); 2118 pw.println("mNetworkInfo " + mNetworkInfo); 2119 pw.println("mLastSignalLevel " + mLastSignalLevel); 2120 pw.println("mLastBssid " + mLastBssid); 2121 pw.println("mLastNetworkId " + mLastNetworkId); 2122 pw.println("mOperationalMode " + mOperationalMode); 2123 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2124 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2125 pw.println("Supplicant status " + mWifiNative.status()); 2126 pw.println("mEnableBackgroundScan " + mEnableBackgroundScan); 2127 pw.println("mLastSetCountryCode " + mLastSetCountryCode); 2128 pw.println("mPersistedCountryCode " + mPersistedCountryCode); 2129 pw.println(); 2130 mWifiConfigStore.dump(fd, pw, args); 2131 } 2132 2133 /********************************************************* 2134 * Internal private functions 2135 ********************************************************/ 2136 2137 private void logStateAndMessage(Message message, String state) { 2138 if (mLogMessages) { 2139 //long now = SystemClock.elapsedRealtimeNanos(); 2140 //String ts = String.format("[%,d us]", now/1000); 2141 2142 loge( " " + state + " " + getLogRecString(message)); 2143 } 2144 } 2145 2146 /** 2147 * Return the additional string to be logged by LogRec, default 2148 * 2149 * @param msg that was processed 2150 * @return information to be logged as a String 2151 */ 2152 protected String getLogRecString(Message msg) { 2153 WifiConfiguration config; 2154 StringBuilder sb = new StringBuilder(); 2155 if (mScreenOn) { 2156 sb.append("!"); 2157 } 2158 sb.append(smToString(msg)); 2159 2160 switch (msg.what) { 2161 case CMD_START_SCAN: 2162 sb.append(" "); 2163 sb.append(Integer.toString(msg.arg1)); 2164 sb.append(" "); 2165 sb.append(Integer.toString(msg.arg2)); 2166 sb.append(" "); 2167 sb.append(Integer.toString(sScanAlarmIntentCount)); 2168 if (mIsScanOngoing) sb.append(" onGoing"); 2169 if (mIsFullScanOngoing) sb.append(" full"); 2170 if (lastStartScanTimeStamp != 0) { 2171 sb.append(" started:").append(lastStartScanTimeStamp); 2172 } 2173 if (lastScanDuration != 0) { 2174 sb.append(" dur:").append(lastScanDuration); 2175 } 2176 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2177 sb.append(" f=").append(mWifiInfo.getFrequency()); 2178 sb.append(" sc=").append(mWifiInfo.score); 2179 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2180 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2181 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2182 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2183 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2184 if (lastScanFreqs != null) sb.append(" ").append(lastScanFreqs); 2185 break; 2186 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2187 sb.append(" "); 2188 sb.append(Integer.toString(msg.arg1)); 2189 sb.append(" "); 2190 sb.append(Integer.toString(msg.arg2)); 2191 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2192 if (stateChangeResult != null) { 2193 sb.append(stateChangeResult.toString()); 2194 } 2195 break; 2196 case WifiManager.SAVE_NETWORK: 2197 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2198 sb.append(" "); 2199 sb.append(Integer.toString(msg.arg1)); 2200 sb.append(" "); 2201 sb.append(Integer.toString(msg.arg2)); 2202 if (lastSavedConfigurationAttempt != null) { 2203 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2204 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2205 if (lastSavedConfigurationAttempt.hiddenSSID) { 2206 sb.append(" hidden"); 2207 } 2208 if (lastSavedConfigurationAttempt.preSharedKey != null) { 2209 sb.append(" hasPSK"); 2210 } 2211 if (lastSavedConfigurationAttempt.ephemeral) { 2212 sb.append(" ephemeral"); 2213 } 2214 if (lastSavedConfigurationAttempt.selfAdded) { 2215 sb.append(" selfAdded"); 2216 } 2217 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2218 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2219 } 2220 break; 2221 case WifiManager.FORGET_NETWORK: 2222 sb.append(" "); 2223 sb.append(Integer.toString(msg.arg1)); 2224 sb.append(" "); 2225 sb.append(Integer.toString(msg.arg2)); 2226 if (lastForgetConfigurationAttempt != null) { 2227 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2228 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2229 if (lastForgetConfigurationAttempt.hiddenSSID) { 2230 sb.append(" hidden"); 2231 } 2232 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2233 sb.append(" hasPSK"); 2234 } 2235 if (lastForgetConfigurationAttempt.ephemeral) { 2236 sb.append(" ephemeral"); 2237 } 2238 if (lastForgetConfigurationAttempt.selfAdded) { 2239 sb.append(" selfAdded"); 2240 } 2241 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2242 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2243 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2244 } 2245 break; 2246 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2247 sb.append(" "); 2248 sb.append(Integer.toString(msg.arg1)); 2249 sb.append(" "); 2250 sb.append(Integer.toString(msg.arg2)); 2251 String bssid = (String)msg.obj; 2252 if (bssid != null && bssid.length()>0) { 2253 sb.append(" "); 2254 sb.append(bssid); 2255 } 2256 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2257 break; 2258 case WifiMonitor.SCAN_RESULTS_EVENT: 2259 sb.append(" "); 2260 sb.append(Integer.toString(msg.arg1)); 2261 sb.append(" "); 2262 sb.append(Integer.toString(msg.arg2)); 2263 if (mScanResults != null) { 2264 sb.append(" found="); 2265 sb.append(mScanResults.size()); 2266 } 2267 sb.append(" known=").append(mNumScanResultsKnown); 2268 if (lastScanDuration != 0) { 2269 sb.append(" dur:").append(lastScanDuration); 2270 } 2271 break; 2272 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2273 sb.append(" "); 2274 sb.append(Integer.toString(msg.arg1)); 2275 sb.append(" "); 2276 sb.append(Integer.toString(msg.arg2)); 2277 sb.append(" ").append(mLastBssid); 2278 sb.append(" nid=").append(mLastNetworkId); 2279 config = getCurrentWifiConfiguration(); 2280 if (config != null) { 2281 sb.append(" ").append(config.configKey()); 2282 } 2283 break; 2284 case CMD_TARGET_BSSID: 2285 sb.append(" "); 2286 sb.append(Integer.toString(msg.arg1)); 2287 sb.append(" "); 2288 sb.append(Integer.toString(msg.arg2)); 2289 if (msg.obj != null) { 2290 sb.append(" BSSID=").append((String)msg.obj); 2291 } 2292 if (mTargetRoamBSSID != null) { 2293 sb.append(" Target=").append(mTargetRoamBSSID); 2294 } 2295 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2296 break; 2297 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2298 if (msg.obj != null) { 2299 sb.append(" ").append((String)msg.obj); 2300 } 2301 sb.append(" nid=").append(msg.arg1); 2302 sb.append(" reason=").append(msg.arg2); 2303 if (mLastBssid != null) { 2304 sb.append(" lastbssid=").append(mLastBssid); 2305 } 2306 if (mWifiInfo.getFrequency() != -1) { 2307 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2308 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2309 } 2310 if (linkDebouncing) { 2311 sb.append(" debounce"); 2312 } 2313 break; 2314 case WifiMonitor.SSID_TEMP_DISABLED: 2315 case WifiMonitor.SSID_REENABLED: 2316 sb.append(" nid=").append(msg.arg1); 2317 if (msg.obj != null) { 2318 sb.append(" ").append((String)msg.obj); 2319 } 2320 config = getCurrentWifiConfiguration(); 2321 if (config != null) { 2322 sb.append(" cur=").append(config.configKey()); 2323 sb.append(" ajst=").append(config.autoJoinStatus); 2324 if (config.selfAdded) { 2325 sb.append(" selfAdded"); 2326 } 2327 if (config.status != 0) { 2328 sb.append(" st=").append(config.status); 2329 sb.append(" rs=").append(config.disableReason); 2330 } 2331 if (config.lastConnected != 0) { 2332 long now = System.currentTimeMillis(); 2333 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2334 } 2335 if (mLastBssid != null) { 2336 sb.append(" lastbssid=").append(mLastBssid); 2337 } 2338 if (mWifiInfo.getFrequency() != -1) { 2339 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2340 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2341 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2342 } 2343 } 2344 break; 2345 case CMD_RSSI_POLL: 2346 case CMD_UNWANTED_NETWORK: 2347 case WifiManager.RSSI_PKTCNT_FETCH: 2348 sb.append(" "); 2349 sb.append(Integer.toString(msg.arg1)); 2350 sb.append(" "); 2351 sb.append(Integer.toString(msg.arg2)); 2352 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2353 sb.append(" f=").append(mWifiInfo.getFrequency()); 2354 sb.append(" sc=").append(mWifiInfo.score); 2355 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2356 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2357 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2358 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2359 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2360 break; 2361 case CMD_AUTO_CONNECT: 2362 case WifiManager.CONNECT_NETWORK: 2363 sb.append(" "); 2364 sb.append(Integer.toString(msg.arg1)); 2365 sb.append(" "); 2366 sb.append(Integer.toString(msg.arg2)); 2367 config = (WifiConfiguration) msg.obj; 2368 if (config != null) { 2369 sb.append(" ").append(config.configKey()); 2370 if (config.visibility != null) { 2371 sb.append(" [").append(config.visibility.num24); 2372 sb.append(" ,").append(config.visibility.rssi24); 2373 sb.append(" ;").append(config.visibility.num5); 2374 sb.append(" ,").append(config.visibility.rssi5).append("]"); 2375 } 2376 } 2377 if (mTargetRoamBSSID != null) { 2378 sb.append(" ").append(mTargetRoamBSSID); 2379 } 2380 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2381 break; 2382 case CMD_AUTO_ROAM: 2383 sb.append(" "); 2384 sb.append(Integer.toString(msg.arg1)); 2385 sb.append(" "); 2386 sb.append(Integer.toString(msg.arg2)); 2387 ScanResult result = (ScanResult)msg.obj; 2388 if (result != null) { 2389 sb.append(" bssid=").append(result.BSSID); 2390 sb.append(" rssi=").append(result.level); 2391 sb.append(" freq=").append(result.frequency); 2392 sb.append(" ").append(result.BSSID); 2393 } 2394 if (mTargetRoamBSSID != null) { 2395 sb.append(" ").append(mTargetRoamBSSID); 2396 } 2397 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2398 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 2399 break; 2400 case CMD_ENABLE_NETWORK: 2401 sb.append(" "); 2402 sb.append(Integer.toString(msg.arg1)); 2403 sb.append(" "); 2404 sb.append(Integer.toString(msg.arg2)); 2405 String key = mWifiConfigStore.getLastSelectedConfiguration(); 2406 if (key != null) { 2407 sb.append(" ").append(key); 2408 } 2409 break; 2410 case CMD_GET_CONFIGURED_NETWORKS: 2411 sb.append(" "); 2412 sb.append(Integer.toString(msg.arg1)); 2413 sb.append(" "); 2414 sb.append(Integer.toString(msg.arg2)); 2415 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 2416 break; 2417 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 2418 sb.append(" "); 2419 sb.append(Integer.toString(msg.arg1)); 2420 sb.append(" "); 2421 sb.append(Integer.toString(msg.arg2)); 2422 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 2423 sb.append(" OK "); 2424 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 2425 sb.append(" FAIL "); 2426 } 2427 if (mLinkProperties != null) { 2428 if (mLinkProperties.hasIPv4Address()) { 2429 sb.append(" v4"); 2430 } 2431 if (mLinkProperties.hasGlobalIPv6Address()) { 2432 sb.append(" v6"); 2433 } 2434 if (mLinkProperties.hasIPv4DefaultRoute()) { 2435 sb.append(" v4r"); 2436 } 2437 if (mLinkProperties.hasIPv6DefaultRoute()) { 2438 sb.append(" v6r"); 2439 } 2440 if (mLinkProperties.hasIPv4DnsServer()) { 2441 sb.append(" v4dns"); 2442 } 2443 if (mLinkProperties.hasIPv6DnsServer()) { 2444 sb.append(" v6dns"); 2445 } 2446 } 2447 break; 2448 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 2449 sb.append(" "); 2450 sb.append(Integer.toString(msg.arg1)); 2451 sb.append(" "); 2452 sb.append(Integer.toString(msg.arg2)); 2453 if (msg.obj != null) { 2454 NetworkInfo info = (NetworkInfo)msg.obj; 2455 NetworkInfo.State state = info.getState(); 2456 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 2457 if (state != null) { 2458 sb.append(" st=").append(state); 2459 } 2460 if (detailedState != null) { 2461 sb.append("/").append(detailedState); 2462 } 2463 } 2464 break; 2465 case CMD_IP_CONFIGURATION_LOST: 2466 int count = -1; 2467 WifiConfiguration c = getCurrentWifiConfiguration(); 2468 if (c != null) count = c.numConnectionFailures; 2469 sb.append(" "); 2470 sb.append(Integer.toString(msg.arg1)); 2471 sb.append(" "); 2472 sb.append(Integer.toString(msg.arg2)); 2473 sb.append(" failures: "); 2474 sb.append(Integer.toString(count)); 2475 sb.append("/"); 2476 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 2477 break; 2478 case CMD_UPDATE_LINKPROPERTIES: 2479 sb.append(" "); 2480 sb.append(Integer.toString(msg.arg1)); 2481 sb.append(" "); 2482 sb.append(Integer.toString(msg.arg2)); 2483 if (mLinkProperties != null) { 2484 if (mLinkProperties.hasIPv4Address()) { 2485 sb.append(" v4"); 2486 } 2487 if (mLinkProperties.hasGlobalIPv6Address()) { 2488 sb.append(" v6"); 2489 } 2490 if (mLinkProperties.hasIPv4DefaultRoute()) { 2491 sb.append(" v4r"); 2492 } 2493 if (mLinkProperties.hasIPv6DefaultRoute()) { 2494 sb.append(" v6r"); 2495 } 2496 if (mLinkProperties.hasIPv4DnsServer()) { 2497 sb.append(" v4dns"); 2498 } 2499 if (mLinkProperties.hasIPv6DnsServer()) { 2500 sb.append(" v6dns"); 2501 } 2502 } 2503 break; 2504 case CMD_SET_COUNTRY_CODE: 2505 sb.append(" "); 2506 sb.append(Integer.toString(msg.arg1)); 2507 sb.append(" "); 2508 sb.append(Integer.toString(msg.arg2)); 2509 if (msg.obj != null) { 2510 sb.append(" ").append((String)msg.obj); 2511 } 2512 break; 2513 case CMD_ROAM_WATCHDOG_TIMER: 2514 sb.append(" "); 2515 sb.append(Integer.toString(msg.arg1)); 2516 sb.append(" "); 2517 sb.append(Integer.toString(msg.arg2)); 2518 sb.append(" cur=").append(roamWatchdogCount); 2519 break; 2520 case CMD_DISCONNECTING_WATCHDOG_TIMER: 2521 sb.append(" "); 2522 sb.append(Integer.toString(msg.arg1)); 2523 sb.append(" "); 2524 sb.append(Integer.toString(msg.arg2)); 2525 sb.append(" cur=").append(disconnectingWatchdogCount); 2526 break; 2527 default: 2528 sb.append(" "); 2529 sb.append(Integer.toString(msg.arg1)); 2530 sb.append(" "); 2531 sb.append(Integer.toString(msg.arg2)); 2532 break; 2533 } 2534 2535 return sb.toString(); 2536 } 2537 2538 private void handleScreenStateChanged(boolean screenOn) { 2539 mScreenOn = screenOn; 2540 if (PDBG) { 2541 loge(" handleScreenStateChanged Enter: screenOn=" + screenOn 2542 + "mCurrentScanAlarmMs = " + Long.toString(mCurrentScanAlarmMs) 2543 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 2544 + " state " + getCurrentState().getName() 2545 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 2546 } 2547 enableRssiPolling(screenOn); 2548 if (mBackgroundScanSupported) { 2549 enableBackgroundScanCommand(screenOn == false); 2550 } 2551 2552 if (screenOn) enableAllNetworks(); 2553 if (mUserWantsSuspendOpt.get()) { 2554 if (screenOn) { 2555 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 2556 } else { 2557 //Allow 2s for suspend optimizations to be set 2558 mSuspendWakeLock.acquire(2000); 2559 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 2560 } 2561 } 2562 mScreenBroadcastReceived.set(true); 2563 2564 if (screenOn) { 2565 fullBandConnectedTimeIntervalMilli = mWifiConfigStore.associatedPartialScanPeriodMs; 2566 // Start the scan alarm so as to enable autojoin 2567 if (getCurrentState() == mConnectedState) { 2568 mCurrentScanAlarmMs = mWifiConfigStore.associatedPartialScanPeriodMs; 2569 } else if (getCurrentState() == mDisconnectedState) { 2570 mCurrentScanAlarmMs = mDisconnectedScanPeriodMs; 2571 // Kick a scan right now 2572 startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 2573 } else if (getCurrentState() == mDisconnectingState) { 2574 mCurrentScanAlarmMs = mDisconnectedScanPeriodMs; 2575 // Kick a scan right now 2576 startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 2577 } 2578 setScanAlarm(true); 2579 } else { 2580 setScanAlarm(false); 2581 } 2582 2583 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 2584 } 2585 2586 private void checkAndSetConnectivityInstance() { 2587 if (mCm == null) { 2588 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 2589 } 2590 } 2591 2592 private boolean startTethering(ArrayList<String> available) { 2593 2594 boolean wifiAvailable = false; 2595 2596 checkAndSetConnectivityInstance(); 2597 2598 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 2599 2600 for (String intf : available) { 2601 for (String regex : wifiRegexs) { 2602 if (intf.matches(regex)) { 2603 2604 InterfaceConfiguration ifcg = null; 2605 try { 2606 ifcg = mNwService.getInterfaceConfig(intf); 2607 if (ifcg != null) { 2608 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 2609 ifcg.setLinkAddress(new LinkAddress( 2610 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 2611 ifcg.setInterfaceUp(); 2612 2613 mNwService.setInterfaceConfig(intf, ifcg); 2614 } 2615 } catch (Exception e) { 2616 loge("Error configuring interface " + intf + ", :" + e); 2617 return false; 2618 } 2619 2620 if(mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 2621 loge("Error tethering on " + intf); 2622 return false; 2623 } 2624 mTetherInterfaceName = intf; 2625 return true; 2626 } 2627 } 2628 } 2629 // We found no interfaces to tether 2630 return false; 2631 } 2632 2633 private void stopTethering() { 2634 2635 checkAndSetConnectivityInstance(); 2636 2637 /* Clear the interface config to allow dhcp correctly configure new 2638 ip settings */ 2639 InterfaceConfiguration ifcg = null; 2640 try { 2641 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 2642 if (ifcg != null) { 2643 ifcg.setLinkAddress( 2644 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 2645 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 2646 } 2647 } catch (Exception e) { 2648 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 2649 } 2650 2651 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 2652 loge("Untether initiate failed!"); 2653 } 2654 } 2655 2656 private boolean isWifiTethered(ArrayList<String> active) { 2657 2658 checkAndSetConnectivityInstance(); 2659 2660 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 2661 for (String intf : active) { 2662 for (String regex : wifiRegexs) { 2663 if (intf.matches(regex)) { 2664 return true; 2665 } 2666 } 2667 } 2668 // We found no interfaces that are tethered 2669 return false; 2670 } 2671 2672 /** 2673 * Set the country code from the system setting value, if any. 2674 */ 2675 private void setCountryCode() { 2676 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 2677 Settings.Global.WIFI_COUNTRY_CODE); 2678 if (countryCode != null && !countryCode.isEmpty()) { 2679 setCountryCode(countryCode, false); 2680 } else { 2681 //use driver default 2682 } 2683 } 2684 2685 /** 2686 * Set the frequency band from the system setting value, if any. 2687 */ 2688 private void setFrequencyBand() { 2689 int band = Settings.Global.getInt(mContext.getContentResolver(), 2690 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 2691 setFrequencyBand(band, false); 2692 } 2693 2694 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 2695 if (DBG) { 2696 log("setSuspendOptimizationsNative: " + reason + " " + enabled 2697 + " -want " + mUserWantsSuspendOpt.get() 2698 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 2699 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 2700 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 2701 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 2702 } 2703 //mWifiNative.setSuspendOptimizations(enabled); 2704 2705 if (enabled) { 2706 mSuspendOptNeedsDisabled &= ~reason; 2707 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 2708 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 2709 if (DBG) { 2710 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 2711 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 2712 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 2713 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 2714 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 2715 } 2716 mWifiNative.setSuspendOptimizations(true); 2717 } 2718 } else { 2719 mSuspendOptNeedsDisabled |= reason; 2720 mWifiNative.setSuspendOptimizations(false); 2721 } 2722 } 2723 2724 private void setSuspendOptimizations(int reason, boolean enabled) { 2725 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 2726 if (enabled) { 2727 mSuspendOptNeedsDisabled &= ~reason; 2728 } else { 2729 mSuspendOptNeedsDisabled |= reason; 2730 } 2731 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2732 } 2733 2734 private void setWifiState(int wifiState) { 2735 final int previousWifiState = mWifiState.get(); 2736 2737 try { 2738 if (wifiState == WIFI_STATE_ENABLED) { 2739 mBatteryStats.noteWifiOn(); 2740 } else if (wifiState == WIFI_STATE_DISABLED) { 2741 mBatteryStats.noteWifiOff(); 2742 } 2743 } catch (RemoteException e) { 2744 loge("Failed to note battery stats in wifi"); 2745 } 2746 2747 mWifiState.set(wifiState); 2748 2749 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 2750 2751 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 2752 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2753 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 2754 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 2755 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2756 } 2757 2758 private void setWifiApState(int wifiApState) { 2759 final int previousWifiApState = mWifiApState.get(); 2760 2761 try { 2762 if (wifiApState == WIFI_AP_STATE_ENABLED) { 2763 mBatteryStats.noteWifiOn(); 2764 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 2765 mBatteryStats.noteWifiOff(); 2766 } 2767 } catch (RemoteException e) { 2768 loge("Failed to note battery stats in wifi"); 2769 } 2770 2771 // Update state 2772 mWifiApState.set(wifiApState); 2773 2774 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 2775 2776 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 2777 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2778 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 2779 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 2780 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2781 } 2782 2783 private static final String ID_STR = "id="; 2784 private static final String BSSID_STR = "bssid="; 2785 private static final String FREQ_STR = "freq="; 2786 private static final String LEVEL_STR = "level="; 2787 private static final String TSF_STR = "tsf="; 2788 private static final String FLAGS_STR = "flags="; 2789 private static final String SSID_STR = "ssid="; 2790 private static final String DELIMITER_STR = "===="; 2791 private static final String END_STR = "####"; 2792 2793 /** 2794 * Format: 2795 * 2796 * id=1 2797 * bssid=68:7f:76:d7:1a:6e 2798 * freq=2412 2799 * level=-44 2800 * tsf=1344626243700342 2801 * flags=[WPA2-PSK-CCMP][WPS][ESS] 2802 * ssid=zfdy 2803 * ==== 2804 * id=2 2805 * bssid=68:5f:74:d7:1a:6f 2806 * freq=5180 2807 * level=-73 2808 * tsf=1344626243700373 2809 * flags=[WPA2-PSK-CCMP][WPS][ESS] 2810 * ssid=zuby 2811 * ==== 2812 */ 2813 private void setScanResults() { 2814 mNumScanResultsKnown = 0; 2815 String bssid = ""; 2816 int level = 0; 2817 int freq = 0; 2818 long tsf = 0; 2819 String flags = ""; 2820 WifiSsid wifiSsid = null; 2821 String scanResults; 2822 String tmpResults; 2823 StringBuffer scanResultsBuf = new StringBuffer(); 2824 int sid = 0; 2825 2826 while (true) { 2827 tmpResults = mWifiNative.scanResults(sid); 2828 if (TextUtils.isEmpty(tmpResults)) break; 2829 scanResultsBuf.append(tmpResults); 2830 scanResultsBuf.append("\n"); 2831 String[] lines = tmpResults.split("\n"); 2832 sid = -1; 2833 for (int i=lines.length - 1; i >= 0; i--) { 2834 if (lines[i].startsWith(END_STR)) { 2835 break; 2836 } else if (lines[i].startsWith(ID_STR)) { 2837 try { 2838 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 2839 } catch (NumberFormatException e) { 2840 // Nothing to do 2841 } 2842 break; 2843 } 2844 } 2845 if (sid == -1) break; 2846 } 2847 2848 scanResults = scanResultsBuf.toString(); 2849 if (TextUtils.isEmpty(scanResults)) { 2850 return; 2851 } 2852 2853 // note that all these splits and substrings keep references to the original 2854 // huge string buffer while the amount we really want is generally pretty small 2855 // so make copies instead (one example b/11087956 wasted 400k of heap here). 2856 synchronized(mScanResultCache) { 2857 mScanResults = new ArrayList<ScanResult>(); 2858 String[] lines = scanResults.split("\n"); 2859 final int bssidStrLen = BSSID_STR.length(); 2860 final int flagLen = FLAGS_STR.length(); 2861 2862 for (String line : lines) { 2863 if (line.startsWith(BSSID_STR)) { 2864 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 2865 } else if (line.startsWith(FREQ_STR)) { 2866 try { 2867 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 2868 } catch (NumberFormatException e) { 2869 freq = 0; 2870 } 2871 } else if (line.startsWith(LEVEL_STR)) { 2872 try { 2873 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 2874 /* some implementations avoid negative values by adding 256 2875 * so we need to adjust for that here. 2876 */ 2877 if (level > 0) level -= 256; 2878 } catch(NumberFormatException e) { 2879 level = 0; 2880 } 2881 } else if (line.startsWith(TSF_STR)) { 2882 try { 2883 tsf = Long.parseLong(line.substring(TSF_STR.length())); 2884 } catch (NumberFormatException e) { 2885 tsf = 0; 2886 } 2887 } else if (line.startsWith(FLAGS_STR)) { 2888 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 2889 } else if (line.startsWith(SSID_STR)) { 2890 wifiSsid = WifiSsid.createFromAsciiEncoded( 2891 line.substring(SSID_STR.length())); 2892 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 2893 if (bssid != null) { 2894 String ssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 2895 String key = bssid + ssid; 2896 ScanResult scanResult = mScanResultCache.get(key); 2897 if (scanResult != null) { 2898 scanResult.level = level; 2899 scanResult.wifiSsid = wifiSsid; 2900 // Keep existing API 2901 scanResult.SSID = (wifiSsid != null) ? wifiSsid.toString() : 2902 WifiSsid.NONE; 2903 scanResult.capabilities = flags; 2904 scanResult.frequency = freq; 2905 scanResult.timestamp = tsf; 2906 scanResult.seen = System.currentTimeMillis(); 2907 } else { 2908 scanResult = 2909 new ScanResult( 2910 wifiSsid, bssid, flags, level, freq, tsf); 2911 scanResult.seen = System.currentTimeMillis(); 2912 mScanResultCache.put(key, scanResult); 2913 } 2914 mScanResults.add(scanResult); 2915 } 2916 bssid = null; 2917 level = 0; 2918 freq = 0; 2919 tsf = 0; 2920 flags = ""; 2921 wifiSsid = null; 2922 } 2923 } 2924 } 2925 boolean attemptAutoJoin = true; 2926 SupplicantState state = mWifiInfo.getSupplicantState(); 2927 if (getCurrentState() == mRoamingState 2928 || getCurrentState() == mObtainingIpState 2929 || linkDebouncing 2930 || state == SupplicantState.ASSOCIATING 2931 || state == SupplicantState.AUTHENTICATING 2932 || state == SupplicantState.FOUR_WAY_HANDSHAKE 2933 || state == SupplicantState.GROUP_HANDSHAKE) { 2934 // Dont attempt auto-joining again while we are already attempting to join 2935 // and/or obtaining Ip address 2936 attemptAutoJoin = false; 2937 } 2938 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 2939 if (linkDebouncing) { 2940 // If debouncing, we dont re-select a SSID or BSSID hence 2941 // there is no need to call the network selection code 2942 // in WifiAutoJoinController, instead, 2943 // just try to reconnect to the same SSID by triggering a roam 2944 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 2945 } 2946 } 2947 2948 /* 2949 * Fetch RSSI, linkspeed, and frequency on current connection 2950 */ 2951 private void fetchRssiLinkSpeedAndFrequencyNative() { 2952 int newRssi = -1; 2953 int newLinkSpeed = -1; 2954 int newFrequency = -1; 2955 2956 String signalPoll = mWifiNative.signalPoll(); 2957 2958 if (signalPoll != null) { 2959 String[] lines = signalPoll.split("\n"); 2960 for (String line : lines) { 2961 String[] prop = line.split("="); 2962 if (prop.length < 2) continue; 2963 try { 2964 if (prop[0].equals("RSSI")) { 2965 newRssi = Integer.parseInt(prop[1]); 2966 } else if (prop[0].equals("LINKSPEED")) { 2967 newLinkSpeed = Integer.parseInt(prop[1]); 2968 } else if (prop[0].equals("FREQUENCY")) { 2969 newFrequency = Integer.parseInt(prop[1]); 2970 } 2971 } catch (NumberFormatException e) { 2972 //Ignore, defaults on rssi and linkspeed are assigned 2973 } 2974 } 2975 } 2976 2977 if (PDBG) { 2978 loge("fetchRssiLinkSpeedAndFrequencyNative rssi=" 2979 + Integer.toString(newRssi) + " linkspeed=" 2980 + Integer.toString(newLinkSpeed)); 2981 } 2982 2983 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 2984 // screen out invalid values 2985 /* some implementations avoid negative values by adding 256 2986 * so we need to adjust for that here. 2987 */ 2988 if (newRssi > 0) newRssi -= 256; 2989 mWifiInfo.setRssi(newRssi); 2990 /* 2991 * Rather then sending the raw RSSI out every time it 2992 * changes, we precalculate the signal level that would 2993 * be displayed in the status bar, and only send the 2994 * broadcast if that much more coarse-grained number 2995 * changes. This cuts down greatly on the number of 2996 * broadcasts, at the cost of not informing others 2997 * interested in RSSI of all the changes in signal 2998 * level. 2999 */ 3000 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 3001 if (newSignalLevel != mLastSignalLevel) { 3002 sendRssiChangeBroadcast(newRssi); 3003 } 3004 mLastSignalLevel = newSignalLevel; 3005 } else { 3006 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 3007 } 3008 3009 if (newLinkSpeed != -1) { 3010 mWifiInfo.setLinkSpeed(newLinkSpeed); 3011 } 3012 if (newFrequency > 0) { 3013 if (ScanResult.is5GHz(newFrequency)) { 3014 mWifiConnectionStatistics.num5GhzConnected++; 3015 } 3016 if (ScanResult.is24GHz(newFrequency)) { 3017 mWifiConnectionStatistics.num24GhzConnected++; 3018 } 3019 mWifiInfo.setFrequency(newFrequency); 3020 } 3021 mWifiConfigStore.updateConfiguration(mWifiInfo); 3022 } 3023 3024 /** 3025 * Determine if we need to switch network: 3026 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 3027 * - match the uregncy of the switch versus the packet usage at the interface 3028 */ 3029 boolean shouldSwitchNetwork(int networkDelta) { 3030 int delta; 3031 if (networkDelta <= 0) { 3032 return false; 3033 } 3034 delta = networkDelta; 3035 if (mWifiInfo != null) { 3036 if (!mWifiConfigStore.enableAutoJoinWhileAssociated 3037 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 3038 // If AutoJoin while associated is not enabled, 3039 // we should never switch network when already associated 3040 delta = -1000; 3041 } else { 3042 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 3043 // TODO: at the interface. We should also discriminate between ucast and mcast, 3044 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 3045 // TODO: broadcasts 3046 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 3047 delta -= 999; 3048 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 3049 delta -= 6; 3050 } 3051 loge("WifiStateMachine shouldSwitchNetwork " 3052 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3053 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3054 + " delta " + networkDelta + " -> " + delta); 3055 } 3056 } else { 3057 loge("WifiStateMachine shouldSwitchNetwork " 3058 + " delta " + networkDelta + " -> " + delta); 3059 } 3060 if (delta > 0) { 3061 return true; 3062 } 3063 return false; 3064 } 3065 3066 private void calculateWifiScore(WifiLinkLayerStats stats) { 3067 3068 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 3069 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 3070 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 3071 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 3072 3073 } else { 3074 mWifiInfo.updatePacketRates(stats); 3075 } 3076 int score = 56; //starting score, temporarily hardcoded in between 50 and 60 3077 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 3078 && mWifiInfo.getLinkSpeed() < 6) 3079 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() < 12); 3080 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 3081 && mWifiInfo.getLinkSpeed() >= 24) 3082 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() >= 48); 3083 3084 3085 /** 3086 * We want to make sure that we use the 24GHz RSSI thresholds is 3087 * there are 2.4GHz scan results 3088 * otherwise we end up lowering the score based on 5GHz values 3089 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 3090 * We also might unblacklist the configuation based on 2.4GHz 3091 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 3092 */ 3093 boolean use24Thresholds = false; 3094 boolean homeNetworkBoost = false; 3095 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 3096 if (currentConfiguration != null 3097 && currentConfiguration.scanResultCache != null) { 3098 currentConfiguration.setVisibility(12000); 3099 if (currentConfiguration.visibility != null) { 3100 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 3101 && currentConfiguration.visibility.rssi24 3102 >= (currentConfiguration.visibility.rssi5-2)) { 3103 use24Thresholds = true; 3104 } 3105 } 3106 if (currentConfiguration.scanResultCache.size() <= 4 3107 && currentConfiguration.allowedKeyManagement.cardinality() == 1 3108 && currentConfiguration.allowedKeyManagement. 3109 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 3110 // A PSK network with less than 4 known BSSIDs 3111 // This is most likely a home network and thus we want to stick to wifi more 3112 homeNetworkBoost = true; 3113 } 3114 } 3115 3116 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 3117 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 3118 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 3119 3120 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24) 3121 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5); 3122 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24) 3123 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5); 3124 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24) 3125 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5); 3126 3127 if (PDBG) { 3128 String rssiStatus = ""; 3129 if (isBadRSSI) rssiStatus += " badRSSI "; 3130 else if (isHighRSSI) rssiStatus += " highRSSI "; 3131 else if (isLowRSSI) rssiStatus += " lowRSSI "; 3132 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 3133 loge("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 3134 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 3135 + " score=" + Integer.toString(mWifiInfo.score) 3136 + rssiStatus 3137 + " -> txbadrate=" + String.format( "%.2f", mWifiInfo.txBadRate ) 3138 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3139 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 3140 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3141 ); 3142 } 3143 3144 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 3145 && (isBadRSSI || isLowRSSI)) { 3146 // Link is stuck 3147 if (mWifiInfo.linkStuckCount < 5) 3148 mWifiInfo.linkStuckCount += 1; 3149 if (PDBG) loge(" bad link -> stuck count =" 3150 + Integer.toString(mWifiInfo.linkStuckCount)); 3151 } else if (mWifiInfo.txSuccessRate > 2 || mWifiInfo.txBadRate < 0.1) { 3152 if (mWifiInfo.linkStuckCount > 0) 3153 mWifiInfo.linkStuckCount -= 1; 3154 if (PDBG) loge(" good link -> stuck count =" 3155 + Integer.toString(mWifiInfo.linkStuckCount)); 3156 } 3157 3158 if (mWifiInfo.linkStuckCount > 1) { 3159 // Once link gets stuck for more than 3 seconds, start reducing the score 3160 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 3161 } 3162 3163 if (isBadLinkspeed) { 3164 score -= 4; 3165 if (PDBG) loge(" isBadLinkspeed ---> score=" + Integer.toString(score)); 3166 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 3167 score += 4; // So as bad rssi alone dont kill us 3168 } 3169 3170 if (isBadRSSI) { 3171 if (mWifiInfo.badRssiCount < 7) 3172 mWifiInfo.badRssiCount += 1; 3173 } else if (isLowRSSI) { 3174 mWifiInfo.lowRssiCount = 1; // Dont increment 3175 if (mWifiInfo.badRssiCount > 0) { 3176 mWifiInfo.badRssiCount -= 1; 3177 } 3178 } else { 3179 mWifiInfo.badRssiCount = 0; 3180 mWifiInfo.lowRssiCount = 0; 3181 } 3182 3183 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount ; 3184 3185 if (PDBG) loge(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 3186 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 3187 + " --> score " + Integer.toString(score)); 3188 3189 3190 if (isHighRSSI) { 3191 score += 5; 3192 if (PDBG) loge(" isHighRSSI ---> score=" + Integer.toString(score)); 3193 } 3194 3195 //sanitize boundaries 3196 if (score > NetworkAgent.WIFI_BASE_SCORE) 3197 score = NetworkAgent.WIFI_BASE_SCORE; 3198 if (score < 0) 3199 score = 0; 3200 3201 //report score 3202 if (score != mWifiInfo.score) { 3203 if (DBG) { 3204 loge("calculateWifiScore() report new score " + Integer.toString(score)); 3205 } 3206 mWifiInfo.score = score; 3207 if (mNetworkAgent != null) { 3208 mNetworkAgent.sendNetworkScore(score); 3209 } 3210 } 3211 } 3212 3213 public double getTxPacketRate() { 3214 if (mWifiInfo != null) { 3215 return mWifiInfo.txSuccessRate; 3216 } 3217 return -1; 3218 } 3219 3220 public double getRxPacketRate() { 3221 if (mWifiInfo != null) { 3222 return mWifiInfo.rxSuccessRate; 3223 } 3224 return -1; 3225 } 3226 3227 /** 3228 * Fetch TX packet counters on current connection 3229 */ 3230 private void fetchPktcntNative(RssiPacketCountInfo info) { 3231 String pktcntPoll = mWifiNative.pktcntPoll(); 3232 3233 if (pktcntPoll != null) { 3234 String[] lines = pktcntPoll.split("\n"); 3235 for (String line : lines) { 3236 String[] prop = line.split("="); 3237 if (prop.length < 2) continue; 3238 try { 3239 if (prop[0].equals("TXGOOD")) { 3240 info.txgood = Integer.parseInt(prop[1]); 3241 } else if (prop[0].equals("TXBAD")) { 3242 info.txbad = Integer.parseInt(prop[1]); 3243 } 3244 } catch (NumberFormatException e) { 3245 // Ignore 3246 } 3247 } 3248 } 3249 } 3250 3251 private boolean clearIPv4Address(String iface) { 3252 try { 3253 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 3254 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 3255 mNwService.setInterfaceConfig(iface, ifcg); 3256 return true; 3257 } catch (RemoteException e) { 3258 return false; 3259 } 3260 } 3261 3262 private boolean isProvisioned(LinkProperties lp) { 3263 // LinkProperties#isProvisioned returns true even if all we have is an IPv4 address and no 3264 // connectivity. This turns out not to be very useful, because we can't distinguish it from 3265 // a state where we have an IPv4 address assigned to the interface but are still running 3266 // DHCP. 3267 // TODO: Fix LinkProperties and remove this function. 3268 if (mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 3269 return lp.hasIPv4Address(); 3270 } else { 3271 return (lp.hasIPv4Address() && lp.hasIPv4DefaultRoute() && lp.hasIPv4DnsServer()) || 3272 (lp.hasGlobalIPv6Address() && lp.hasIPv6DefaultRoute() && lp.hasIPv6DnsServer()); 3273 } 3274 } 3275 3276 /** 3277 * Updates mLinkProperties by merging information from various sources. 3278 * 3279 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 3280 * netlink, static configuration, ...). When one of these sources of information has updated 3281 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 3282 * information that came from other sources. Instead, when one of those sources has new 3283 * information, we update the object that tracks the information from that source and then 3284 * call this method to apply the change to mLinkProperties. 3285 * 3286 * The information in mLinkProperties is currently obtained as follows: 3287 * - Interface name: set in the constructor. 3288 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 3289 * - IPv4 routes, DNS servers, and domains: DHCP. 3290 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 3291 * - HTTP proxy: the wifi config store. 3292 */ 3293 private void updateLinkProperties(int reason) { 3294 LinkProperties newLp = new LinkProperties(); 3295 3296 // Interface name and proxy are locally configured. 3297 newLp.setInterfaceName(mInterfaceName); 3298 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 3299 3300 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 3301 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 3302 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 3303 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 3304 newLp.addRoute(route); 3305 } 3306 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 3307 newLp.addDnsServer(dns); 3308 } 3309 3310 // IPv4 routes, DNS servers and domains come from mDhcpResults. 3311 synchronized (mDhcpResultsLock) { 3312 // Even when we're using static configuration, we don't need to look at the config 3313 // store, because static IP configuration also populates mDhcpResults. 3314 if ((mDhcpResults != null)) { 3315 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 3316 newLp.addRoute(route); 3317 } 3318 for (InetAddress dns : mDhcpResults.dnsServers) { 3319 newLp.addDnsServer(dns); 3320 } 3321 newLp.setDomains(mDhcpResults.domains); 3322 } 3323 } 3324 3325 final boolean linkChanged = !newLp.equals(mLinkProperties); 3326 final boolean wasProvisioned = isProvisioned(mLinkProperties); 3327 final boolean isProvisioned = isProvisioned(newLp); 3328 final DetailedState detailedState = getNetworkDetailedState(); 3329 3330 if (linkChanged) { 3331 if (DBG) { 3332 log("Link configuration changed for netId: " + mLastNetworkId 3333 + " old: " + mLinkProperties + " new: " + newLp); 3334 } 3335 mLinkProperties = newLp; 3336 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 3337 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 3338 } 3339 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 3340 } 3341 3342 if (DBG) { 3343 StringBuilder sb = new StringBuilder(); 3344 sb.append("updateLinkProperties nid: " + mLastNetworkId); 3345 sb.append(" state: " + detailedState); 3346 sb.append(" reason: " + smToString(reason)); 3347 3348 if (mLinkProperties != null) { 3349 if (mLinkProperties.hasIPv4Address()) { 3350 sb.append(" v4"); 3351 } 3352 if (mLinkProperties.hasGlobalIPv6Address()) { 3353 sb.append(" v6"); 3354 } 3355 if (mLinkProperties.hasIPv4DefaultRoute()) { 3356 sb.append(" v4r"); 3357 } 3358 if (mLinkProperties.hasIPv6DefaultRoute()) { 3359 sb.append(" v6r"); 3360 } 3361 if (mLinkProperties.hasIPv4DnsServer()) { 3362 sb.append(" v4dns"); 3363 } 3364 if (mLinkProperties.hasIPv6DnsServer()) { 3365 sb.append(" v6dns"); 3366 } 3367 if (isProvisioned) { 3368 sb.append(" isprov"); 3369 } 3370 } 3371 loge(sb.toString()); 3372 } 3373 3374 // If we just configured or lost IP configuration, do the needful. 3375 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 3376 // here because those should only be called if we're attempting to connect or already 3377 // connected, whereas updateLinkProperties can be called at any time. 3378 switch (reason) { 3379 case DhcpStateMachine.DHCP_SUCCESS: 3380 case CMD_STATIC_IP_SUCCESS: 3381 // IPv4 provisioning succeded. Advance to connected state. 3382 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 3383 if (!isProvisioned) { 3384 // Can never happen unless DHCP reports success but isProvisioned thinks the 3385 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 3386 // mLinkProperties is out of sync with reality, or there's a bug in this code). 3387 // TODO: disconnect here instead. If our configuration is not usable, there's no 3388 // point in staying connected, and if mLinkProperties is out of sync with 3389 // reality, that will cause problems in the future. 3390 loge("IPv4 config succeeded, but not provisioned"); 3391 } 3392 break; 3393 3394 case DhcpStateMachine.DHCP_FAILURE: 3395 // DHCP failed. If we're not already provisioned, give up and disconnect. 3396 // If we're already provisioned (e.g., IPv6-only network), stay connected. 3397 if (!isProvisioned) { 3398 sendMessage(CMD_IP_CONFIGURATION_LOST); 3399 } else { 3400 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 3401 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 3402 3403 // To be sure we don't get stuck with a non-working network if all we had is 3404 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 3405 // and DHCP failed). If we had an IPv4 address before, the deletion of the 3406 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 3407 // necessary for provisioning, its deletion will cause us to disconnect. 3408 // 3409 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 3410 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 3411 // not return true if we're using DHCP and don't have an IPv4 default route. So 3412 // for now it's only here for extra redundancy. However, it will increase 3413 // robustness if we move to getting IPv4 routes from netlink as well. 3414 loge("DHCP failure: provisioned, clearing IPv4 address."); 3415 if (!clearIPv4Address(mInterfaceName)) { 3416 sendMessage(CMD_IP_CONFIGURATION_LOST); 3417 } 3418 } 3419 break; 3420 3421 case CMD_STATIC_IP_FAILURE: 3422 // Static configuration was invalid, or an error occurred in applying it. Give up. 3423 sendMessage(CMD_IP_CONFIGURATION_LOST); 3424 break; 3425 3426 case CMD_UPDATE_LINKPROPERTIES: 3427 // IP addresses, DNS servers, etc. changed. Act accordingly. 3428 if (wasProvisioned && !isProvisioned) { 3429 // We no longer have a usable network configuration. Disconnect. 3430 sendMessage(CMD_IP_CONFIGURATION_LOST); 3431 } else if (!wasProvisioned && isProvisioned) { 3432 // We have a usable IPv6-only config. Advance to connected state. 3433 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 3434 } 3435 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 3436 // If anything has changed and we're already connected, send out a notification. 3437 sendLinkConfigurationChangedBroadcast(); 3438 } 3439 break; 3440 } 3441 } 3442 3443 /** 3444 * Clears all our link properties. 3445 */ 3446 private void clearLinkProperties() { 3447 // Clear the link properties obtained from DHCP and netlink. 3448 synchronized (mDhcpResultsLock) { 3449 if (mDhcpResults != null) { 3450 mDhcpResults.clear(); 3451 } 3452 } 3453 mNetlinkTracker.clearLinkProperties(); 3454 3455 // Now clear the merged link properties. 3456 mLinkProperties.clear(); 3457 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 3458 } 3459 3460 /** 3461 * try to update default route MAC address. 3462 */ 3463 private String updateDefaultRouteMacAddress(int timeout) { 3464 String address = null; 3465 for (RouteInfo route : mLinkProperties.getRoutes()) { 3466 if (route.isDefaultRoute() && route.hasGateway()) { 3467 InetAddress gateway = route.getGateway(); 3468 if (gateway instanceof Inet4Address) { 3469 if (PDBG) { 3470 loge("updateDefaultRouteMacAddress found Ipv4 default :" 3471 + gateway.getHostAddress()); 3472 } 3473 address = macAddressFromRoute(gateway.getHostAddress()); 3474 /* The gateway's MAC address is known */ 3475 if ((address == null) && (timeout > 0)) { 3476 boolean reachable = false; 3477 try { 3478 reachable = gateway.isReachable(timeout); 3479 } catch (Exception e) { 3480 loge("updateDefaultRouteMacAddress exception reaching :" 3481 + gateway.getHostAddress()); 3482 3483 } finally { 3484 if (reachable == true) { 3485 3486 address = macAddressFromRoute(gateway.getHostAddress()); 3487 if (PDBG) { 3488 loge("updateDefaultRouteMacAddress reachable (tried again) :" 3489 + gateway.getHostAddress() + " found " + address); 3490 } 3491 } 3492 } 3493 } 3494 if (address != null) { 3495 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 3496 } 3497 } 3498 } 3499 } 3500 return address; 3501 } 3502 3503 private void sendScanResultsAvailableBroadcast() { 3504 noteScanEnd(); 3505 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 3506 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3507 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3508 } 3509 3510 private void sendRssiChangeBroadcast(final int newRssi) { 3511 try { 3512 mBatteryStats.noteWifiRssiChanged(newRssi); 3513 } catch (RemoteException e) { 3514 // Won't happen. 3515 } 3516 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 3517 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3518 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 3519 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3520 } 3521 3522 private void sendNetworkStateChangeBroadcast(String bssid) { 3523 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 3524 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3525 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 3526 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties (mLinkProperties)); 3527 if (bssid != null) 3528 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 3529 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 3530 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 3531 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, new WifiInfo(mWifiInfo)); 3532 } 3533 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3534 } 3535 3536 private void sendLinkConfigurationChangedBroadcast() { 3537 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 3538 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3539 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 3540 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3541 } 3542 3543 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 3544 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 3545 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3546 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 3547 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3548 } 3549 3550 /** 3551 * Record the detailed state of a network. 3552 * @param state the new {@code DetailedState} 3553 */ 3554 private void setNetworkDetailedState(NetworkInfo.DetailedState state) { 3555 boolean hidden = false; 3556 3557 if (linkDebouncing || isRoaming()) { 3558 // There is generally a confusion in the system about colluding 3559 // WiFi Layer 2 state (as reported by supplicant) and the Network state 3560 // which leads to multiple confusion. 3561 // 3562 // If link is de-bouncing or roaming, we already have an IP address 3563 // as well we were connected and are doing L2 cycles of 3564 // reconnecting or renewing IP address to check that we still have it 3565 // This L2 link flapping should ne be reflected into the Network state 3566 // which is the state of the WiFi Network visible to Layer 3 and applications 3567 // Note that once debouncing and roaming are completed, we will 3568 // set the Network state to where it should be, or leave it as unchanged 3569 // 3570 hidden = true; 3571 } 3572 if (DBG) { 3573 log("setDetailed state, old =" 3574 + mNetworkInfo.getDetailedState() + " and new state=" + state 3575 + " hidden=" + hidden); 3576 } 3577 if (hidden == true) return; 3578 3579 if (state != mNetworkInfo.getDetailedState()) { 3580 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 3581 if (mNetworkAgent != null) { 3582 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 3583 } 3584 } 3585 } 3586 3587 private DetailedState getNetworkDetailedState() { 3588 return mNetworkInfo.getDetailedState(); 3589 } 3590 3591 3592 private SupplicantState handleSupplicantStateChange(Message message) { 3593 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 3594 SupplicantState state = stateChangeResult.state; 3595 // Supplicant state change 3596 // [31-13] Reserved for future use 3597 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 3598 // 50023 supplicant_state_changed (custom|1|5) 3599 mWifiInfo.setSupplicantState(state); 3600 // Network id is only valid when we start connecting 3601 if (SupplicantState.isConnecting(state)) { 3602 mWifiInfo.setNetworkId(stateChangeResult.networkId); 3603 } else { 3604 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 3605 } 3606 3607 mWifiInfo.setBSSID(stateChangeResult.BSSID); 3608 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 3609 3610 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 3611 3612 return state; 3613 } 3614 3615 /** 3616 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 3617 * using the interface, stopping DHCP & disabling interface 3618 */ 3619 private void handleNetworkDisconnect() { 3620 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 3621 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3622 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 3623 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 3624 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 3625 3626 stopDhcp(); 3627 3628 try { 3629 mNwService.clearInterfaceAddresses(mInterfaceName); 3630 mNwService.disableIpv6(mInterfaceName); 3631 } catch (Exception e) { 3632 loge("Failed to clear addresses or disable ipv6" + e); 3633 } 3634 3635 /* Reset data structures */ 3636 mWifiInfo.reset(); 3637 linkDebouncing = false; 3638 /* Reset roaming parameters */ 3639 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 3640 fullBandConnectedTimeIntervalMilli = 20 * 1000; // Start scans at 20 seconds interval 3641 3642 setNetworkDetailedState(DetailedState.DISCONNECTED); 3643 if (mNetworkAgent != null) { 3644 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 3645 mNetworkAgent = null; 3646 } 3647 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 3648 3649 /* Clear network properties */ 3650 clearLinkProperties(); 3651 3652 /* Cend event to CM & network change broadcast */ 3653 sendNetworkStateChangeBroadcast(mLastBssid); 3654 3655 /* Cancel auto roam requests */ 3656 autoRoamSetBSSID(mLastNetworkId, "any"); 3657 3658 mLastBssid= null; 3659 registerDisconnected(); 3660 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 3661 } 3662 3663 private void handleSupplicantConnectionLoss() { 3664 /* Socket connection can be lost when we do a graceful shutdown 3665 * or when the driver is hung. Ensure supplicant is stopped here. 3666 */ 3667 mWifiMonitor.killSupplicant(mP2pSupported); 3668 mWifiNative.closeSupplicantConnection(); 3669 sendSupplicantConnectionChangedBroadcast(false); 3670 setWifiState(WIFI_STATE_DISABLED); 3671 } 3672 3673 void handlePreDhcpSetup() { 3674 mDhcpActive = true; 3675 if (!mBluetoothConnectionActive) { 3676 /* 3677 * There are problems setting the Wi-Fi driver's power 3678 * mode to active when bluetooth coexistence mode is 3679 * enabled or sense. 3680 * <p> 3681 * We set Wi-Fi to active mode when 3682 * obtaining an IP address because we've found 3683 * compatibility issues with some routers with low power 3684 * mode. 3685 * <p> 3686 * In order for this active power mode to properly be set, 3687 * we disable coexistence mode until we're done with 3688 * obtaining an IP address. One exception is if we 3689 * are currently connected to a headset, since disabling 3690 * coexistence would interrupt that connection. 3691 */ 3692 // Disable the coexistence mode 3693 mWifiNative.setBluetoothCoexistenceMode( 3694 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 3695 } 3696 3697 // Disable power save and suspend optimizations during DHCP 3698 // Note: The order here is important for now. Brcm driver changes 3699 // power settings when we control suspend mode optimizations. 3700 // TODO: Remove this comment when the driver is fixed. 3701 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 3702 mWifiNative.setPowerSave(false); 3703 3704 stopBatchedScan(); 3705 WifiNative.pauseScan(); 3706 3707 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 3708 Message msg = new Message(); 3709 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 3710 msg.arg1 = WifiP2pServiceImpl.ENABLED; 3711 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 3712 msg.obj = mDhcpStateMachine; 3713 mWifiP2pChannel.sendMessage(msg); 3714 } 3715 3716 3717 void startDhcp() { 3718 if (mDhcpStateMachine == null) { 3719 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 3720 mContext, WifiStateMachine.this, mInterfaceName); 3721 3722 } 3723 mDhcpStateMachine.registerForPreDhcpNotification(); 3724 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 3725 } 3726 3727 void renewDhcp() { 3728 if (mDhcpStateMachine == null) { 3729 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 3730 mContext, WifiStateMachine.this, mInterfaceName); 3731 3732 } 3733 mDhcpStateMachine.registerForPreDhcpNotification(); 3734 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 3735 } 3736 3737 void stopDhcp() { 3738 if (mDhcpStateMachine != null) { 3739 /* In case we were in middle of DHCP operation restore back powermode */ 3740 handlePostDhcpSetup(); 3741 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 3742 } 3743 } 3744 3745 void handlePostDhcpSetup() { 3746 /* Restore power save and suspend optimizations */ 3747 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 3748 mWifiNative.setPowerSave(true); 3749 3750 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 3751 3752 // Set the coexistence mode back to its default value 3753 mWifiNative.setBluetoothCoexistenceMode( 3754 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 3755 3756 mDhcpActive = false; 3757 3758 startBatchedScan(); 3759 WifiNative.restartScan(); 3760 } 3761 3762 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 3763 3764 if (PDBG) { 3765 loge("wifistatemachine handleIPv4Success <" + dhcpResults.toString() + ">"); 3766 loge("link address " + dhcpResults.ipAddress); 3767 } 3768 3769 synchronized (mDhcpResultsLock) { 3770 mDhcpResults = dhcpResults; 3771 } 3772 3773 Inet4Address addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 3774 if (isRoaming()) { 3775 if (addr instanceof Inet4Address) { 3776 int previousAddress = mWifiInfo.getIpAddress(); 3777 int newAddress = NetworkUtils.inetAddressToInt(addr); 3778 if (previousAddress != newAddress) { 3779 loge("handleIPv4Success, roaming and address changed" + 3780 mWifiInfo + " got: " + addr); 3781 } else { 3782 3783 } 3784 } else { 3785 loge("handleIPv4Success, roaming and didnt get an IPv4 address" + 3786 addr.toString()); 3787 3788 3789 } 3790 } 3791 mWifiInfo.setInetAddress(addr); 3792 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 3793 updateLinkProperties(reason); 3794 } 3795 3796 private void handleSuccessfulIpConfiguration() { 3797 mLastSignalLevel = -1; // Force update of signal strength 3798 WifiConfiguration c = getCurrentWifiConfiguration(); 3799 // Reset IP failure tracking 3800 if (c != null) { 3801 c.numConnectionFailures = 0; 3802 } 3803 } 3804 3805 private void handleIPv4Failure(int reason) { 3806 synchronized(mDhcpResultsLock) { 3807 if (mDhcpResults != null) { 3808 mDhcpResults.clear(); 3809 } 3810 } 3811 if (PDBG) { 3812 loge("wifistatemachine handleIPv4Failure"); 3813 } 3814 updateLinkProperties(reason); 3815 } 3816 3817 private void handleIpConfigurationLost() { 3818 mWifiInfo.setInetAddress(null); 3819 mWifiInfo.setMeteredHint(false); 3820 3821 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, "DHCP FAILURE"); 3822 3823 /* DHCP times out after about 30 seconds, we do a 3824 * disconnect thru supplicant, we will let autojoin retry connecting to the network 3825 */ 3826 mWifiNative.disconnect(); 3827 } 3828 3829 /* Current design is to not set the config on a running hostapd but instead 3830 * stop and start tethering when user changes config on a running access point 3831 * 3832 * TODO: Add control channel setup through hostapd that allows changing config 3833 * on a running daemon 3834 */ 3835 private void startSoftApWithConfig(final WifiConfiguration config) { 3836 // Start hostapd on a separate thread 3837 new Thread(new Runnable() { 3838 public void run() { 3839 try { 3840 mNwService.startAccessPoint(config, mInterfaceName); 3841 } catch (Exception e) { 3842 loge("Exception in softap start " + e); 3843 try { 3844 mNwService.stopAccessPoint(mInterfaceName); 3845 mNwService.startAccessPoint(config, mInterfaceName); 3846 } catch (Exception e1) { 3847 loge("Exception in softap re-start " + e1); 3848 sendMessage(CMD_START_AP_FAILURE); 3849 return; 3850 } 3851 } 3852 if (DBG) log("Soft AP start successful"); 3853 sendMessage(CMD_START_AP_SUCCESS); 3854 } 3855 }).start(); 3856 } 3857 3858 3859 /* 3860 * Read a MAC address in /proc/arp/table, used by WifistateMachine 3861 * so as to record MAC address of default gateway. 3862 **/ 3863 private String macAddressFromRoute(String ipAddress) { 3864 String macAddress = null; 3865 BufferedReader reader = null; 3866 try { 3867 reader = new BufferedReader(new FileReader("/proc/net/arp")); 3868 3869 // Skip over the line bearing colum titles 3870 String line = reader.readLine(); 3871 3872 while ((line = reader.readLine()) != null) { 3873 String[] tokens = line.split("[ ]+"); 3874 if (tokens.length < 6) { 3875 continue; 3876 } 3877 3878 // ARP column format is 3879 // Address HWType HWAddress Flags Mask IFace 3880 String ip = tokens[0]; 3881 String mac = tokens[3]; 3882 3883 if (ipAddress.equals(ip)) { 3884 macAddress = mac; 3885 break; 3886 } 3887 } 3888 3889 if (macAddress == null) { 3890 loge("Did not find remoteAddress {" + ipAddress + "} in " + 3891 "/proc/net/arp"); 3892 } 3893 3894 } catch (FileNotFoundException e) { 3895 loge("Could not open /proc/net/arp to lookup mac address"); 3896 } catch (IOException e) { 3897 loge("Could not read /proc/net/arp to lookup mac address"); 3898 } finally { 3899 try { 3900 if (reader != null) { 3901 reader.close(); 3902 } 3903 } catch (IOException e) { 3904 // Do nothing 3905 } 3906 } 3907 return macAddress; 3908 3909 } 3910 3911 private class WifiNetworkFactory extends NetworkFactory { 3912 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 3913 super(l, c, TAG, f); 3914 } 3915 protected void startNetwork() { 3916 // TODO 3917 // Enter association mode. 3918 } 3919 protected void stopNetwork() { 3920 // TODO 3921 // Stop associating. 3922 } 3923 } 3924 /******************************************************** 3925 * HSM states 3926 *******************************************************/ 3927 3928 class DefaultState extends State { 3929 @Override 3930 public boolean processMessage(Message message) { 3931 logStateAndMessage(message, getClass().getSimpleName()); 3932 3933 switch (message.what) { 3934 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 3935 AsyncChannel ac = (AsyncChannel) message.obj; 3936 if (ac == mWifiP2pChannel) { 3937 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3938 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 3939 } else { 3940 loge("WifiP2pService connection failure, error=" + message.arg1); 3941 } 3942 } else { 3943 loge("got HALF_CONNECTED for unknown channel"); 3944 } 3945 break; 3946 } 3947 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 3948 AsyncChannel ac = (AsyncChannel) message.obj; 3949 if (ac == mWifiP2pChannel) { 3950 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 3951 //TODO: Re-establish connection to state machine after a delay 3952 // mWifiP2pChannel.connect(mContext, getHandler(), 3953 // mWifiP2pManager.getMessenger()); 3954 } 3955 break; 3956 } 3957 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 3958 mBluetoothConnectionActive = (message.arg1 != 3959 BluetoothAdapter.STATE_DISCONNECTED); 3960 break; 3961 /* Synchronous call returns */ 3962 case CMD_PING_SUPPLICANT: 3963 case CMD_ENABLE_NETWORK: 3964 case CMD_ADD_OR_UPDATE_NETWORK: 3965 case CMD_REMOVE_NETWORK: 3966 case CMD_SAVE_CONFIG: 3967 replyToMessage(message, message.what, FAILURE); 3968 break; 3969 case CMD_GET_CAPABILITY_FREQ: 3970 replyToMessage(message, message.what, null); 3971 break; 3972 case CMD_GET_CONFIGURED_NETWORKS: 3973 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 3974 break; 3975 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 3976 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 3977 break; 3978 case CMD_ENABLE_RSSI_POLL: 3979 mEnableRssiPolling = (message.arg1 == 1); 3980 break; 3981 case CMD_ENABLE_BACKGROUND_SCAN: 3982 mEnableBackgroundScan = (message.arg1 == 1); 3983 break; 3984 case CMD_SET_HIGH_PERF_MODE: 3985 if (message.arg1 == 1) { 3986 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 3987 } else { 3988 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 3989 } 3990 break; 3991 case CMD_BOOT_COMPLETED: 3992 String countryCode = mPersistedCountryCode; 3993 if (TextUtils.isEmpty(countryCode) == false) { 3994 Settings.Global.putString(mContext.getContentResolver(), 3995 Settings.Global.WIFI_COUNTRY_CODE, 3996 countryCode); 3997 // It may be that the state transition that should send this info 3998 // to the driver happened between mPersistedCountryCode getting set 3999 // and now, so simply persisting it here would mean we have sent 4000 // nothing to the driver. Send the cmd so it might be set now. 4001 int sequenceNum = mCountryCodeSequence.incrementAndGet(); 4002 sendMessageAtFrontOfQueue(CMD_SET_COUNTRY_CODE, 4003 sequenceNum, 0, countryCode); 4004 } 4005 4006 checkAndSetConnectivityInstance(); 4007 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 4008 NETWORKTYPE, mNetworkCapabilitiesFilter); 4009 mNetworkFactory.setScoreFilter(60); 4010 mCm.registerNetworkFactory(new Messenger(mNetworkFactory), NETWORKTYPE); 4011 break; 4012 case CMD_SET_BATCHED_SCAN: 4013 recordBatchedScanSettings(message.arg1, message.arg2, (Bundle)message.obj); 4014 break; 4015 case CMD_POLL_BATCHED_SCAN: 4016 handleBatchedScanPollRequest(); 4017 break; 4018 case CMD_START_NEXT_BATCHED_SCAN: 4019 startNextBatchedScan(); 4020 break; 4021 case CMD_SCREEN_STATE_CHANGED: 4022 handleScreenStateChanged(message.arg1 != 0); 4023 break; 4024 /* Discard */ 4025 case CMD_START_SCAN: 4026 case CMD_START_SUPPLICANT: 4027 case CMD_STOP_SUPPLICANT: 4028 case CMD_STOP_SUPPLICANT_FAILED: 4029 case CMD_START_DRIVER: 4030 case CMD_STOP_DRIVER: 4031 case CMD_DELAYED_STOP_DRIVER: 4032 case CMD_DRIVER_START_TIMED_OUT: 4033 case CMD_START_AP: 4034 case CMD_START_AP_SUCCESS: 4035 case CMD_START_AP_FAILURE: 4036 case CMD_STOP_AP: 4037 case CMD_TETHER_STATE_CHANGE: 4038 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 4039 case CMD_DISCONNECT: 4040 case CMD_RECONNECT: 4041 case CMD_REASSOCIATE: 4042 case CMD_RELOAD_TLS_AND_RECONNECT: 4043 case WifiMonitor.SUP_CONNECTION_EVENT: 4044 case WifiMonitor.SUP_DISCONNECTION_EVENT: 4045 case WifiMonitor.NETWORK_CONNECTION_EVENT: 4046 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 4047 case WifiMonitor.SCAN_RESULTS_EVENT: 4048 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 4049 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 4050 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 4051 case WifiMonitor.WPS_OVERLAP_EVENT: 4052 case CMD_BLACKLIST_NETWORK: 4053 case CMD_CLEAR_BLACKLIST: 4054 case CMD_SET_OPERATIONAL_MODE: 4055 case CMD_SET_COUNTRY_CODE: 4056 case CMD_SET_FREQUENCY_BAND: 4057 case CMD_RSSI_POLL: 4058 case CMD_ENABLE_ALL_NETWORKS: 4059 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 4060 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 4061 /* Handled by WifiApConfigStore */ 4062 case CMD_SET_AP_CONFIG: 4063 case CMD_SET_AP_CONFIG_COMPLETED: 4064 case CMD_REQUEST_AP_CONFIG: 4065 case CMD_RESPONSE_AP_CONFIG: 4066 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 4067 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 4068 case CMD_NO_NETWORKS_PERIODIC_SCAN: 4069 case CMD_DISABLE_P2P_RSP: 4070 case WifiMonitor.SUP_REQUEST_IDENTITY: 4071 case CMD_TEST_NETWORK_DISCONNECT: 4072 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 4073 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 4074 case CMD_TARGET_BSSID: 4075 case CMD_AUTO_CONNECT: 4076 case CMD_AUTO_ROAM: 4077 case CMD_AUTO_SAVE_NETWORK: 4078 break; 4079 case DhcpStateMachine.CMD_ON_QUIT: 4080 mDhcpStateMachine = null; 4081 break; 4082 case CMD_SET_SUSPEND_OPT_ENABLED: 4083 if (message.arg1 == 1) { 4084 mSuspendWakeLock.release(); 4085 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 4086 } else { 4087 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 4088 } 4089 break; 4090 case WifiMonitor.DRIVER_HUNG_EVENT: 4091 setSupplicantRunning(false); 4092 setSupplicantRunning(true); 4093 break; 4094 case WifiManager.CONNECT_NETWORK: 4095 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 4096 WifiManager.BUSY); 4097 break; 4098 case WifiManager.FORGET_NETWORK: 4099 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 4100 WifiManager.BUSY); 4101 break; 4102 case WifiManager.SAVE_NETWORK: 4103 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 4104 WifiManager.BUSY); 4105 break; 4106 case WifiManager.START_WPS: 4107 replyToMessage(message, WifiManager.WPS_FAILED, 4108 WifiManager.BUSY); 4109 break; 4110 case WifiManager.CANCEL_WPS: 4111 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 4112 WifiManager.BUSY); 4113 break; 4114 case WifiManager.DISABLE_NETWORK: 4115 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 4116 WifiManager.BUSY); 4117 break; 4118 case WifiManager.RSSI_PKTCNT_FETCH: 4119 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 4120 WifiManager.BUSY); 4121 break; 4122 case CMD_GET_SUPPORTED_FEATURES: 4123 if (WifiNative.startHal()) { 4124 int featureSet = WifiNative.getSupportedFeatureSet(); 4125 replyToMessage(message, message.what, featureSet); 4126 } else { 4127 replyToMessage(message, message.what, 0); 4128 } 4129 break; 4130 case CMD_GET_LINK_LAYER_STATS: 4131 // Not supported hence reply with error message 4132 replyToMessage(message, message.what, null); 4133 break; 4134 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 4135 NetworkInfo info = (NetworkInfo) message.obj; 4136 mP2pConnected.set(info.isConnected()); 4137 break; 4138 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 4139 mTemporarilyDisconnectWifi = (message.arg1 == 1); 4140 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 4141 break; 4142 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 4143 case CMD_UPDATE_LINKPROPERTIES: 4144 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 4145 break; 4146 case CMD_IP_CONFIGURATION_SUCCESSFUL: 4147 case CMD_IP_CONFIGURATION_LOST: 4148 break; 4149 case CMD_GET_CONNECTION_STATISTICS: 4150 replyToMessage(message, message.what, mWifiConnectionStatistics); 4151 break; 4152 default: 4153 loge("Error! unhandled message" + message); 4154 break; 4155 } 4156 return HANDLED; 4157 } 4158 } 4159 4160 class InitialState extends State { 4161 @Override 4162 public void enter() { 4163 mWifiNative.unloadDriver(); 4164 4165 if (mWifiP2pChannel == null) { 4166 mWifiP2pChannel = new AsyncChannel(); 4167 mWifiP2pChannel.connect(mContext, getHandler(), 4168 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 4169 } 4170 4171 if (mWifiApConfigChannel == null) { 4172 mWifiApConfigChannel = new AsyncChannel(); 4173 WifiApConfigStore wifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 4174 mContext, getHandler()); 4175 wifiApConfigStore.loadApConfiguration(); 4176 mWifiApConfigChannel.connectSync(mContext, getHandler(), 4177 wifiApConfigStore.getMessenger()); 4178 } 4179 } 4180 @Override 4181 public boolean processMessage(Message message) { 4182 logStateAndMessage(message, getClass().getSimpleName()); 4183 switch (message.what) { 4184 case CMD_START_SUPPLICANT: 4185 if (mWifiNative.loadDriver()) { 4186 try { 4187 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 4188 } catch (Exception e) { 4189 loge("Failed to reload STA firmware " + e); 4190 // Continue 4191 } 4192 4193 try { 4194 // A runtime crash can leave the interface up and 4195 // IP addresses configured, and this affects 4196 // connectivity when supplicant starts up. 4197 // Ensure interface is down and we have no IP 4198 // addresses before a supplicant start. 4199 mNwService.setInterfaceDown(mInterfaceName); 4200 mNwService.clearInterfaceAddresses(mInterfaceName); 4201 4202 // Set privacy extensions 4203 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 4204 4205 // IPv6 is enabled only as long as access point is connected since: 4206 // - IPv6 addresses and routes stick around after disconnection 4207 // - kernel is unaware when connected and fails to start IPv6 negotiation 4208 // - kernel can start autoconfiguration when 802.1x is not complete 4209 mNwService.disableIpv6(mInterfaceName); 4210 } catch (RemoteException re) { 4211 loge("Unable to change interface settings: " + re); 4212 } catch (IllegalStateException ie) { 4213 loge("Unable to change interface settings: " + ie); 4214 } 4215 4216 /* Stop a running supplicant after a runtime restart 4217 * Avoids issues with drivers that do not handle interface down 4218 * on a running supplicant properly. 4219 */ 4220 mWifiMonitor.killSupplicant(mP2pSupported); 4221 if(mWifiNative.startSupplicant(mP2pSupported)) { 4222 setWifiState(WIFI_STATE_ENABLING); 4223 if (DBG) log("Supplicant start successful"); 4224 mWifiMonitor.startMonitoring(); 4225 transitionTo(mSupplicantStartingState); 4226 } else { 4227 loge("Failed to start supplicant!"); 4228 } 4229 } else { 4230 loge("Failed to load driver"); 4231 } 4232 break; 4233 case CMD_START_AP: 4234 if (mWifiNative.loadDriver()) { 4235 setWifiApState(WIFI_AP_STATE_ENABLING); 4236 transitionTo(mSoftApStartingState); 4237 } else { 4238 loge("Failed to load driver for softap"); 4239 } 4240 default: 4241 return NOT_HANDLED; 4242 } 4243 return HANDLED; 4244 } 4245 } 4246 4247 class SupplicantStartingState extends State { 4248 private void initializeWpsDetails() { 4249 String detail; 4250 detail = SystemProperties.get("ro.product.name", ""); 4251 if (!mWifiNative.setDeviceName(detail)) { 4252 loge("Failed to set device name " + detail); 4253 } 4254 detail = SystemProperties.get("ro.product.manufacturer", ""); 4255 if (!mWifiNative.setManufacturer(detail)) { 4256 loge("Failed to set manufacturer " + detail); 4257 } 4258 detail = SystemProperties.get("ro.product.model", ""); 4259 if (!mWifiNative.setModelName(detail)) { 4260 loge("Failed to set model name " + detail); 4261 } 4262 detail = SystemProperties.get("ro.product.model", ""); 4263 if (!mWifiNative.setModelNumber(detail)) { 4264 loge("Failed to set model number " + detail); 4265 } 4266 detail = SystemProperties.get("ro.serialno", ""); 4267 if (!mWifiNative.setSerialNumber(detail)) { 4268 loge("Failed to set serial number " + detail); 4269 } 4270 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 4271 loge("Failed to set WPS config methods"); 4272 } 4273 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 4274 loge("Failed to set primary device type " + mPrimaryDeviceType); 4275 } 4276 } 4277 4278 @Override 4279 public boolean processMessage(Message message) { 4280 logStateAndMessage(message, getClass().getSimpleName()); 4281 4282 switch(message.what) { 4283 case WifiMonitor.SUP_CONNECTION_EVENT: 4284 if (DBG) log("Supplicant connection established"); 4285 setWifiState(WIFI_STATE_ENABLED); 4286 mSupplicantRestartCount = 0; 4287 /* Reset the supplicant state to indicate the supplicant 4288 * state is not known at this time */ 4289 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 4290 /* Initialize data structures */ 4291 mLastBssid = null; 4292 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4293 mLastSignalLevel = -1; 4294 4295 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 4296 mWifiNative.enableSaveConfig(); 4297 mWifiConfigStore.loadAndEnableAllNetworks(); 4298 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging); 4299 if (mWifiConfigStore.associatedPartialScanPeriodMs < 0) { 4300 mWifiConfigStore.associatedPartialScanPeriodMs = 0; 4301 } 4302 initializeWpsDetails(); 4303 4304 sendSupplicantConnectionChangedBroadcast(true); 4305 transitionTo(mDriverStartedState); 4306 break; 4307 case WifiMonitor.SUP_DISCONNECTION_EVENT: 4308 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 4309 loge("Failed to setup control channel, restart supplicant"); 4310 mWifiMonitor.killSupplicant(mP2pSupported); 4311 transitionTo(mInitialState); 4312 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 4313 } else { 4314 loge("Failed " + mSupplicantRestartCount + 4315 " times to start supplicant, unload driver"); 4316 mSupplicantRestartCount = 0; 4317 setWifiState(WIFI_STATE_UNKNOWN); 4318 transitionTo(mInitialState); 4319 } 4320 break; 4321 case CMD_START_SUPPLICANT: 4322 case CMD_STOP_SUPPLICANT: 4323 case CMD_START_AP: 4324 case CMD_STOP_AP: 4325 case CMD_START_DRIVER: 4326 case CMD_STOP_DRIVER: 4327 case CMD_SET_OPERATIONAL_MODE: 4328 case CMD_SET_COUNTRY_CODE: 4329 case CMD_SET_FREQUENCY_BAND: 4330 case CMD_START_PACKET_FILTERING: 4331 case CMD_STOP_PACKET_FILTERING: 4332 deferMessage(message); 4333 break; 4334 default: 4335 return NOT_HANDLED; 4336 } 4337 return HANDLED; 4338 } 4339 } 4340 4341 class SupplicantStartedState extends State { 4342 @Override 4343 public void enter() { 4344 /* Wifi is available as long as we have a connection to supplicant */ 4345 mNetworkInfo.setIsAvailable(true); 4346 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4347 4348 int defaultInterval = mContext.getResources().getInteger( 4349 R.integer.config_wifi_supplicant_scan_interval); 4350 4351 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 4352 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 4353 defaultInterval); 4354 4355 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 4356 mWifiNative.setExternalSim(true); 4357 mWifiNative.setScanningMacOui(GOOGLE_OUI); 4358 4359 mWifiNative.enableAutoConnect(false); 4360 } 4361 @Override 4362 public boolean processMessage(Message message) { 4363 logStateAndMessage(message, getClass().getSimpleName()); 4364 4365 switch(message.what) { 4366 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 4367 if (mP2pSupported) { 4368 transitionTo(mWaitForP2pDisableState); 4369 } else { 4370 transitionTo(mSupplicantStoppingState); 4371 } 4372 break; 4373 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 4374 loge("Connection lost, restart supplicant"); 4375 handleSupplicantConnectionLoss(); 4376 handleNetworkDisconnect(); 4377 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 4378 if (mP2pSupported) { 4379 transitionTo(mWaitForP2pDisableState); 4380 } else { 4381 transitionTo(mInitialState); 4382 } 4383 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 4384 break; 4385 case WifiMonitor.SCAN_RESULTS_EVENT: 4386 setScanResults(); 4387 sendScanResultsAvailableBroadcast(); 4388 mIsScanOngoing = false; 4389 mIsFullScanOngoing = false; 4390 if (mBufferedScanMsg.size() > 0) 4391 sendMessage(mBufferedScanMsg.remove()); 4392 break; 4393 case CMD_PING_SUPPLICANT: 4394 boolean ok = mWifiNative.ping(); 4395 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 4396 break; 4397 case CMD_GET_CAPABILITY_FREQ: 4398 String freqs = mWifiNative.getFreqCapability(); 4399 replyToMessage(message, message.what, freqs); 4400 break; 4401 case CMD_START_AP: 4402 /* Cannot start soft AP while in client mode */ 4403 loge("Failed to start soft AP with a running supplicant"); 4404 setWifiApState(WIFI_AP_STATE_FAILED); 4405 break; 4406 case CMD_SET_OPERATIONAL_MODE: 4407 mOperationalMode = message.arg1; 4408 break; 4409 case CMD_TARGET_BSSID: 4410 break; 4411 case CMD_GET_LINK_LAYER_STATS: 4412 WifiLinkLayerStats stats = null; 4413 // Try reading L2 stats a couple of time, allow for a few failures 4414 // in case the HAL/drivers are not completely initialized once we get there 4415 if (mWifiLinkLayerStatsSupported > 0) { 4416 String name = "wlan0"; 4417 stats = mWifiNative.getWifiLinkLayerStats(name); 4418 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 4419 mWifiLinkLayerStatsSupported -= 1; 4420 } else if (DBG && stats != null) { 4421 loge(stats.toString()); 4422 } 4423 } else { 4424 // When firmware doesnt support link layer stats, return an empty object 4425 stats = new WifiLinkLayerStats(); 4426 } 4427 replyToMessage(message, message.what, stats); 4428 break; 4429 default: 4430 return NOT_HANDLED; 4431 } 4432 return HANDLED; 4433 } 4434 4435 @Override 4436 public void exit() { 4437 mNetworkInfo.setIsAvailable(false); 4438 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4439 } 4440 } 4441 4442 class SupplicantStoppingState extends State { 4443 @Override 4444 public void enter() { 4445 /* Send any reset commands to supplicant before shutting it down */ 4446 handleNetworkDisconnect(); 4447 if (mDhcpStateMachine != null) { 4448 mDhcpStateMachine.doQuit(); 4449 } 4450 4451 if (DBG) log("stopping supplicant"); 4452 mWifiMonitor.stopSupplicant(); 4453 4454 /* Send ourselves a delayed message to indicate failure after a wait time */ 4455 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 4456 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 4457 setWifiState(WIFI_STATE_DISABLING); 4458 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 4459 } 4460 @Override 4461 public boolean processMessage(Message message) { 4462 logStateAndMessage(message, getClass().getSimpleName()); 4463 4464 switch(message.what) { 4465 case WifiMonitor.SUP_CONNECTION_EVENT: 4466 loge("Supplicant connection received while stopping"); 4467 break; 4468 case WifiMonitor.SUP_DISCONNECTION_EVENT: 4469 if (DBG) log("Supplicant connection lost"); 4470 handleSupplicantConnectionLoss(); 4471 transitionTo(mInitialState); 4472 break; 4473 case CMD_STOP_SUPPLICANT_FAILED: 4474 if (message.arg1 == mSupplicantStopFailureToken) { 4475 loge("Timed out on a supplicant stop, kill and proceed"); 4476 handleSupplicantConnectionLoss(); 4477 transitionTo(mInitialState); 4478 } 4479 break; 4480 case CMD_START_SUPPLICANT: 4481 case CMD_STOP_SUPPLICANT: 4482 case CMD_START_AP: 4483 case CMD_STOP_AP: 4484 case CMD_START_DRIVER: 4485 case CMD_STOP_DRIVER: 4486 case CMD_SET_OPERATIONAL_MODE: 4487 case CMD_SET_COUNTRY_CODE: 4488 case CMD_SET_FREQUENCY_BAND: 4489 case CMD_START_PACKET_FILTERING: 4490 case CMD_STOP_PACKET_FILTERING: 4491 deferMessage(message); 4492 break; 4493 default: 4494 return NOT_HANDLED; 4495 } 4496 return HANDLED; 4497 } 4498 } 4499 4500 class DriverStartingState extends State { 4501 private int mTries; 4502 @Override 4503 public void enter() { 4504 mTries = 1; 4505 /* Send ourselves a delayed message to start driver a second time */ 4506 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 4507 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 4508 } 4509 @Override 4510 public boolean processMessage(Message message) { 4511 logStateAndMessage(message, getClass().getSimpleName()); 4512 4513 switch(message.what) { 4514 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 4515 SupplicantState state = handleSupplicantStateChange(message); 4516 /* If suplicant is exiting out of INTERFACE_DISABLED state into 4517 * a state that indicates driver has started, it is ready to 4518 * receive driver commands 4519 */ 4520 if (SupplicantState.isDriverActive(state)) { 4521 transitionTo(mDriverStartedState); 4522 } 4523 break; 4524 case CMD_DRIVER_START_TIMED_OUT: 4525 if (message.arg1 == mDriverStartToken) { 4526 if (mTries >= 2) { 4527 loge("Failed to start driver after " + mTries); 4528 transitionTo(mDriverStoppedState); 4529 } else { 4530 loge("Driver start failed, retrying"); 4531 mWakeLock.acquire(); 4532 mWifiNative.startDriver(); 4533 mWakeLock.release(); 4534 4535 ++mTries; 4536 /* Send ourselves a delayed message to start driver again */ 4537 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 4538 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 4539 } 4540 } 4541 break; 4542 /* Queue driver commands & connection events */ 4543 case CMD_START_DRIVER: 4544 case CMD_STOP_DRIVER: 4545 case WifiMonitor.NETWORK_CONNECTION_EVENT: 4546 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 4547 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 4548 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 4549 case WifiMonitor.WPS_OVERLAP_EVENT: 4550 case CMD_SET_COUNTRY_CODE: 4551 case CMD_SET_FREQUENCY_BAND: 4552 case CMD_START_PACKET_FILTERING: 4553 case CMD_STOP_PACKET_FILTERING: 4554 case CMD_START_SCAN: 4555 case CMD_DISCONNECT: 4556 case CMD_REASSOCIATE: 4557 case CMD_RECONNECT: 4558 deferMessage(message); 4559 break; 4560 default: 4561 return NOT_HANDLED; 4562 } 4563 return HANDLED; 4564 } 4565 } 4566 4567 class DriverStartedState extends State { 4568 @Override 4569 public void enter() { 4570 4571 if (PDBG) { 4572 loge("Driverstarted State enter"); 4573 } 4574 mIsRunning = true; 4575 mInDelayedStop = false; 4576 mDelayedStopCounter++; 4577 updateBatteryWorkSource(null); 4578 /** 4579 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 4580 * When this mode is on, some of the low-level scan parameters used by the 4581 * driver are changed to reduce interference with bluetooth 4582 */ 4583 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 4584 /* set country code */ 4585 setCountryCode(); 4586 /* set frequency band of operation */ 4587 setFrequencyBand(); 4588 /* initialize network state */ 4589 setNetworkDetailedState(DetailedState.DISCONNECTED); 4590 4591 /* Remove any filtering on Multicast v6 at start */ 4592 mWifiNative.stopFilteringMulticastV6Packets(); 4593 4594 /* Reset Multicast v4 filtering state */ 4595 if (mFilteringMulticastV4Packets.get()) { 4596 mWifiNative.startFilteringMulticastV4Packets(); 4597 } else { 4598 mWifiNative.stopFilteringMulticastV4Packets(); 4599 } 4600 4601 mDhcpActive = false; 4602 4603 startBatchedScan(); 4604 4605 if (mOperationalMode != CONNECT_MODE) { 4606 mWifiNative.disconnect(); 4607 mWifiConfigStore.disableAllNetworks(); 4608 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 4609 setWifiState(WIFI_STATE_DISABLED); 4610 } 4611 transitionTo(mScanModeState); 4612 } else { 4613 /* Driver stop may have disabled networks, enable right after start */ 4614 mWifiConfigStore.enableAllNetworks(); 4615 4616 if (DBG) loge("Attempting to reconnect to wifi network .."); 4617 mWifiNative.reconnect(); 4618 4619 // Status pulls in the current supplicant state and network connection state 4620 // events over the monitor connection. This helps framework sync up with 4621 // current supplicant state 4622 mWifiNative.status(); 4623 transitionTo(mDisconnectedState); 4624 } 4625 4626 // We may have missed screen update at boot 4627 if (mScreenBroadcastReceived.get() == false) { 4628 PowerManager powerManager = (PowerManager)mContext.getSystemService( 4629 Context.POWER_SERVICE); 4630 handleScreenStateChanged(powerManager.isScreenOn()); 4631 } else { 4632 // Set the right suspend mode settings 4633 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 4634 && mUserWantsSuspendOpt.get()); 4635 } 4636 mWifiNative.setPowerSave(true); 4637 4638 if (mP2pSupported) { 4639 if (mOperationalMode == CONNECT_MODE) { 4640 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 4641 } else { 4642 // P2P statemachine starts in disabled state, and is not enabled until 4643 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 4644 // keep it disabled. 4645 } 4646 } 4647 4648 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 4649 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4650 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 4651 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4652 4653 if (PDBG) { 4654 loge("Driverstarted State enter done"); 4655 } 4656 } 4657 4658 @Override 4659 public boolean processMessage(Message message) { 4660 logStateAndMessage(message, getClass().getSimpleName()); 4661 4662 switch(message.what) { 4663 case CMD_START_SCAN: 4664 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 4665 break; 4666 case CMD_SET_BATCHED_SCAN: 4667 if (recordBatchedScanSettings(message.arg1, message.arg2, 4668 (Bundle)message.obj)) { 4669 if (mBatchedScanSettings != null) { 4670 startBatchedScan(); 4671 } else { 4672 stopBatchedScan(); 4673 } 4674 } 4675 break; 4676 case CMD_SET_COUNTRY_CODE: 4677 String country = (String) message.obj; 4678 final boolean persist = (message.arg2 == 1); 4679 final int sequence = message.arg1; 4680 if (sequence != mCountryCodeSequence.get()) { 4681 if (DBG) log("set country code ignored due to sequnce num"); 4682 break; 4683 } 4684 if (DBG) log("set country code " + country); 4685 if (persist) { 4686 mPersistedCountryCode = country; 4687 Settings.Global.putString(mContext.getContentResolver(), 4688 Settings.Global.WIFI_COUNTRY_CODE, 4689 country); 4690 } 4691 country = country.toUpperCase(Locale.ROOT); 4692 if (mLastSetCountryCode == null 4693 || country.equals(mLastSetCountryCode) == false) { 4694 if (mWifiNative.setCountryCode(country)) { 4695 mLastSetCountryCode = country; 4696 } else { 4697 loge("Failed to set country code " + country); 4698 } 4699 } 4700 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 4701 break; 4702 case CMD_SET_FREQUENCY_BAND: 4703 int band = message.arg1; 4704 if (DBG) log("set frequency band " + band); 4705 if (mWifiNative.setBand(band)) { 4706 4707 if (PDBG) loge("did set frequency band " + band); 4708 4709 mFrequencyBand.set(band); 4710 // Flush old data - like scan results 4711 mWifiNative.bssFlush(); 4712 // Fetch the latest scan results when frequency band is set 4713 startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 4714 4715 if (PDBG) loge("done set frequency band " + band); 4716 4717 } else { 4718 loge("Failed to set frequency band " + band); 4719 } 4720 break; 4721 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 4722 mBluetoothConnectionActive = (message.arg1 != 4723 BluetoothAdapter.STATE_DISCONNECTED); 4724 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 4725 break; 4726 case CMD_STOP_DRIVER: 4727 int mode = message.arg1; 4728 4729 /* Already doing a delayed stop */ 4730 if (mInDelayedStop) { 4731 if (DBG) log("Already in delayed stop"); 4732 break; 4733 } 4734 /* disconnect right now, but leave the driver running for a bit */ 4735 mWifiConfigStore.disableAllNetworks(); 4736 4737 mInDelayedStop = true; 4738 mDelayedStopCounter++; 4739 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 4740 4741 /* send regular delayed shut down */ 4742 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 4743 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 4744 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 4745 DRIVER_STOP_REQUEST, driverStopIntent, 4746 PendingIntent.FLAG_UPDATE_CURRENT); 4747 4748 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 4749 + mDriverStopDelayMs, mDriverStopIntent); 4750 break; 4751 case CMD_START_DRIVER: 4752 if (mInDelayedStop) { 4753 mInDelayedStop = false; 4754 mDelayedStopCounter++; 4755 mAlarmManager.cancel(mDriverStopIntent); 4756 if (DBG) log("Delayed stop ignored due to start"); 4757 if (mOperationalMode == CONNECT_MODE) { 4758 mWifiConfigStore.enableAllNetworks(); 4759 } 4760 } 4761 break; 4762 case CMD_DELAYED_STOP_DRIVER: 4763 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 4764 if (message.arg1 != mDelayedStopCounter) break; 4765 if (getCurrentState() != mDisconnectedState) { 4766 mWifiNative.disconnect(); 4767 handleNetworkDisconnect(); 4768 } 4769 mWakeLock.acquire(); 4770 mWifiNative.stopDriver(); 4771 mWakeLock.release(); 4772 if (mP2pSupported) { 4773 transitionTo(mWaitForP2pDisableState); 4774 } else { 4775 transitionTo(mDriverStoppingState); 4776 } 4777 break; 4778 case CMD_START_PACKET_FILTERING: 4779 if (message.arg1 == MULTICAST_V6) { 4780 mWifiNative.startFilteringMulticastV6Packets(); 4781 } else if (message.arg1 == MULTICAST_V4) { 4782 mWifiNative.startFilteringMulticastV4Packets(); 4783 } else { 4784 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 4785 } 4786 break; 4787 case CMD_STOP_PACKET_FILTERING: 4788 if (message.arg1 == MULTICAST_V6) { 4789 mWifiNative.stopFilteringMulticastV6Packets(); 4790 } else if (message.arg1 == MULTICAST_V4) { 4791 mWifiNative.stopFilteringMulticastV4Packets(); 4792 } else { 4793 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 4794 } 4795 break; 4796 case CMD_SET_SUSPEND_OPT_ENABLED: 4797 if (message.arg1 == 1) { 4798 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 4799 mSuspendWakeLock.release(); 4800 } else { 4801 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 4802 } 4803 break; 4804 case CMD_SET_HIGH_PERF_MODE: 4805 if (message.arg1 == 1) { 4806 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 4807 } else { 4808 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 4809 } 4810 break; 4811 case CMD_ENABLE_TDLS: 4812 if (message.obj != null) { 4813 String remoteAddress = (String) message.obj; 4814 boolean enable = (message.arg1 == 1); 4815 mWifiNative.startTdls(remoteAddress, enable); 4816 } 4817 break; 4818 default: 4819 return NOT_HANDLED; 4820 } 4821 return HANDLED; 4822 } 4823 @Override 4824 public void exit() { 4825 mIsRunning = false; 4826 updateBatteryWorkSource(null); 4827 mScanResults = new ArrayList<ScanResult>(); 4828 4829 stopBatchedScan(); 4830 4831 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 4832 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4833 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 4834 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 4835 noteScanEnd(); // wrap up any pending request. 4836 mBufferedScanMsg.clear(); 4837 4838 mLastSetCountryCode = null; 4839 } 4840 } 4841 4842 class WaitForP2pDisableState extends State { 4843 private State mTransitionToState; 4844 @Override 4845 public void enter() { 4846 switch (getCurrentMessage().what) { 4847 case WifiMonitor.SUP_DISCONNECTION_EVENT: 4848 mTransitionToState = mInitialState; 4849 break; 4850 case CMD_DELAYED_STOP_DRIVER: 4851 mTransitionToState = mDriverStoppingState; 4852 break; 4853 case CMD_STOP_SUPPLICANT: 4854 mTransitionToState = mSupplicantStoppingState; 4855 break; 4856 default: 4857 mTransitionToState = mDriverStoppingState; 4858 break; 4859 } 4860 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 4861 } 4862 @Override 4863 public boolean processMessage(Message message) { 4864 logStateAndMessage(message, getClass().getSimpleName()); 4865 4866 switch(message.what) { 4867 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 4868 transitionTo(mTransitionToState); 4869 break; 4870 /* Defer wifi start/shut and driver commands */ 4871 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 4872 case CMD_START_SUPPLICANT: 4873 case CMD_STOP_SUPPLICANT: 4874 case CMD_START_AP: 4875 case CMD_STOP_AP: 4876 case CMD_START_DRIVER: 4877 case CMD_STOP_DRIVER: 4878 case CMD_SET_OPERATIONAL_MODE: 4879 case CMD_SET_COUNTRY_CODE: 4880 case CMD_SET_FREQUENCY_BAND: 4881 case CMD_START_PACKET_FILTERING: 4882 case CMD_STOP_PACKET_FILTERING: 4883 case CMD_START_SCAN: 4884 case CMD_DISCONNECT: 4885 case CMD_REASSOCIATE: 4886 case CMD_RECONNECT: 4887 deferMessage(message); 4888 break; 4889 default: 4890 return NOT_HANDLED; 4891 } 4892 return HANDLED; 4893 } 4894 } 4895 4896 class DriverStoppingState extends State { 4897 @Override 4898 public boolean processMessage(Message message) { 4899 logStateAndMessage(message, getClass().getSimpleName()); 4900 4901 switch(message.what) { 4902 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 4903 SupplicantState state = handleSupplicantStateChange(message); 4904 if (state == SupplicantState.INTERFACE_DISABLED) { 4905 transitionTo(mDriverStoppedState); 4906 } 4907 break; 4908 /* Queue driver commands */ 4909 case CMD_START_DRIVER: 4910 case CMD_STOP_DRIVER: 4911 case CMD_SET_COUNTRY_CODE: 4912 case CMD_SET_FREQUENCY_BAND: 4913 case CMD_START_PACKET_FILTERING: 4914 case CMD_STOP_PACKET_FILTERING: 4915 case CMD_START_SCAN: 4916 case CMD_DISCONNECT: 4917 case CMD_REASSOCIATE: 4918 case CMD_RECONNECT: 4919 deferMessage(message); 4920 break; 4921 default: 4922 return NOT_HANDLED; 4923 } 4924 return HANDLED; 4925 } 4926 } 4927 4928 class DriverStoppedState extends State { 4929 @Override 4930 public boolean processMessage(Message message) { 4931 logStateAndMessage(message, getClass().getSimpleName()); 4932 switch (message.what) { 4933 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 4934 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4935 SupplicantState state = stateChangeResult.state; 4936 // A WEXT bug means that we can be back to driver started state 4937 // unexpectedly 4938 if (SupplicantState.isDriverActive(state)) { 4939 transitionTo(mDriverStartedState); 4940 } 4941 break; 4942 case CMD_START_DRIVER: 4943 mWakeLock.acquire(); 4944 mWifiNative.startDriver(); 4945 mWakeLock.release(); 4946 transitionTo(mDriverStartingState); 4947 break; 4948 default: 4949 return NOT_HANDLED; 4950 } 4951 return HANDLED; 4952 } 4953 } 4954 4955 class ScanModeState extends State { 4956 private int mLastOperationMode; 4957 @Override 4958 public void enter() { 4959 mLastOperationMode = mOperationalMode; 4960 } 4961 @Override 4962 public boolean processMessage(Message message) { 4963 logStateAndMessage(message, getClass().getSimpleName()); 4964 4965 switch(message.what) { 4966 case CMD_SET_OPERATIONAL_MODE: 4967 if (message.arg1 == CONNECT_MODE) { 4968 4969 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 4970 setWifiState(WIFI_STATE_ENABLED); 4971 // Load and re-enable networks when going back to enabled state 4972 // This is essential for networks to show up after restore 4973 mWifiConfigStore.loadAndEnableAllNetworks(); 4974 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 4975 } else { 4976 mWifiConfigStore.enableAllNetworks(); 4977 } 4978 4979 mWifiNative.reconnect(); 4980 4981 mOperationalMode = CONNECT_MODE; 4982 transitionTo(mDisconnectedState); 4983 } else { 4984 // Nothing to do 4985 return HANDLED; 4986 } 4987 break; 4988 // Handle scan. All the connection related commands are 4989 // handled only in ConnectModeState 4990 case CMD_START_SCAN: 4991 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 4992 break; 4993 default: 4994 return NOT_HANDLED; 4995 } 4996 return HANDLED; 4997 } 4998 } 4999 5000 5001 String smToString(Message message) { 5002 return smToString(message.what); 5003 } 5004 5005 String smToString(int what) { 5006 String s = "unknown"; 5007 switch (what) { 5008 case WifiMonitor.DRIVER_HUNG_EVENT: 5009 s = "DRIVER_HUNG_EVENT"; 5010 break; 5011 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 5012 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 5013 break; 5014 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 5015 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 5016 break; 5017 case CMD_SET_FREQUENCY_BAND: 5018 s = "CMD_SET_FREQUENCY_BAND"; 5019 break; 5020 case CMD_DELAYED_NETWORK_DISCONNECT: 5021 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 5022 break; 5023 case CMD_TEST_NETWORK_DISCONNECT: 5024 s = "CMD_TEST_NETWORK_DISCONNECT"; 5025 break; 5026 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5027 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 5028 break; 5029 case CMD_START_DRIVER: 5030 s = "CMD_START_DRIVER"; 5031 break; 5032 case CMD_STOP_DRIVER: 5033 s = "CMD_STOP_DRIVER"; 5034 break; 5035 case CMD_STOP_SUPPLICANT: 5036 s = "CMD_STOP_SUPPLICANT"; 5037 break; 5038 case CMD_STOP_SUPPLICANT_FAILED: 5039 s = "CMD_STOP_SUPPLICANT_FAILED"; 5040 break; 5041 case CMD_START_SUPPLICANT: 5042 s = "CMD_START_SUPPLICANT"; 5043 break; 5044 case CMD_REQUEST_AP_CONFIG: 5045 s = "CMD_REQUEST_AP_CONFIG"; 5046 break; 5047 case CMD_RESPONSE_AP_CONFIG: 5048 s = "CMD_RESPONSE_AP_CONFIG"; 5049 break; 5050 case CMD_TETHER_STATE_CHANGE: 5051 s = "CMD_TETHER_STATE_CHANGE"; 5052 break; 5053 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5054 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 5055 break; 5056 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5057 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 5058 break; 5059 case CMD_ADD_OR_UPDATE_NETWORK: 5060 s = "CMD_ADD_OR_UPDATE_NETWORK"; 5061 break; 5062 case CMD_REMOVE_NETWORK: 5063 s = "CMD_REMOVE_NETWORK"; 5064 break; 5065 case CMD_ENABLE_NETWORK: 5066 s = "CMD_ENABLE_NETWORK"; 5067 break; 5068 case CMD_ENABLE_ALL_NETWORKS: 5069 s = "CMD_ENABLE_ALL_NETWORKS"; 5070 break; 5071 case CMD_AUTO_CONNECT: 5072 s = "CMD_AUTO_CONNECT"; 5073 break; 5074 case CMD_AUTO_ROAM: 5075 s = "CMD_AUTO_ROAM"; 5076 break; 5077 case CMD_AUTO_SAVE_NETWORK: 5078 s = "CMD_AUTO_SAVE_NETWORK"; 5079 break; 5080 case CMD_BOOT_COMPLETED: 5081 s = "CMD_BOOT_COMPLETED"; 5082 break; 5083 case DhcpStateMachine.CMD_START_DHCP: 5084 s = "CMD_START_DHCP"; 5085 break; 5086 case DhcpStateMachine.CMD_STOP_DHCP: 5087 s = "CMD_STOP_DHCP"; 5088 break; 5089 case DhcpStateMachine.CMD_RENEW_DHCP: 5090 s = "CMD_RENEW_DHCP"; 5091 break; 5092 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5093 s = "CMD_PRE_DHCP_ACTION"; 5094 break; 5095 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5096 s = "CMD_POST_DHCP_ACTION"; 5097 break; 5098 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 5099 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 5100 break; 5101 case DhcpStateMachine.CMD_ON_QUIT: 5102 s = "CMD_ON_QUIT"; 5103 break; 5104 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5105 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 5106 break; 5107 case WifiManager.DISABLE_NETWORK: 5108 s = "WifiManager.DISABLE_NETWORK"; 5109 break; 5110 case CMD_BLACKLIST_NETWORK: 5111 s = "CMD_BLACKLIST_NETWORK"; 5112 break; 5113 case CMD_CLEAR_BLACKLIST: 5114 s = "CMD_CLEAR_BLACKLIST"; 5115 break; 5116 case CMD_SAVE_CONFIG: 5117 s = "CMD_SAVE_CONFIG"; 5118 break; 5119 case CMD_GET_CONFIGURED_NETWORKS: 5120 s = "CMD_GET_CONFIGURED_NETWORKS"; 5121 break; 5122 case CMD_GET_SUPPORTED_FEATURES: 5123 s = "CMD_GET_ADAPTORS"; 5124 break; 5125 case CMD_UNWANTED_NETWORK: 5126 s = "CMD_UNWANTED_NETWORK"; 5127 break; 5128 case CMD_GET_LINK_LAYER_STATS: 5129 s = "CMD_GET_LINK_LAYER_STATS"; 5130 break; 5131 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5132 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 5133 break; 5134 case CMD_DISCONNECT: 5135 s = "CMD_DISCONNECT"; 5136 break; 5137 case CMD_RECONNECT: 5138 s = "CMD_RECONNECT"; 5139 break; 5140 case CMD_REASSOCIATE: 5141 s = "CMD_REASSOCIATE"; 5142 break; 5143 case CMD_GET_CONNECTION_STATISTICS: 5144 s = "CMD_GET_CONNECTION_STATISTICS"; 5145 break; 5146 case CMD_SET_HIGH_PERF_MODE: 5147 s = "CMD_SET_HIGH_PERF_MODE"; 5148 break; 5149 case CMD_SET_COUNTRY_CODE: 5150 s = "CMD_SET_COUNTRY_CODE"; 5151 break; 5152 case CMD_ENABLE_RSSI_POLL: 5153 s = "CMD_ENABLE_RSSI_POLL"; 5154 break; 5155 case CMD_RSSI_POLL: 5156 s = "CMD_RSSI_POLL"; 5157 break; 5158 case CMD_START_PACKET_FILTERING: 5159 s = "CMD_START_PACKET_FILTERING"; 5160 break; 5161 case CMD_STOP_PACKET_FILTERING: 5162 s = "CMD_STOP_PACKET_FILTERING"; 5163 break; 5164 case CMD_SET_SUSPEND_OPT_ENABLED: 5165 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 5166 break; 5167 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5168 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 5169 break; 5170 case CMD_SET_BATCHED_SCAN: 5171 s = "CMD_SET_BATCHED_SCAN"; 5172 break; 5173 case CMD_START_NEXT_BATCHED_SCAN: 5174 s = "CMD_START_NEXT_BATCHED_SCAN"; 5175 break; 5176 case CMD_POLL_BATCHED_SCAN: 5177 s = "CMD_POLL_BATCHED_SCAN"; 5178 break; 5179 case CMD_UPDATE_LINKPROPERTIES: 5180 s = "CMD_UPDATE_LINKPROPERTIES"; 5181 break; 5182 case CMD_RELOAD_TLS_AND_RECONNECT: 5183 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 5184 break; 5185 case WifiManager.CONNECT_NETWORK: 5186 s = "CONNECT_NETWORK"; 5187 break; 5188 case WifiManager.SAVE_NETWORK: 5189 s = "SAVE_NETWORK"; 5190 break; 5191 case WifiManager.FORGET_NETWORK: 5192 s = "FORGET_NETWORK"; 5193 break; 5194 case WifiMonitor.SUP_CONNECTION_EVENT: 5195 s = "SUP_CONNECTION_EVENT"; 5196 break; 5197 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5198 s = "SUP_DISCONNECTION_EVENT"; 5199 break; 5200 case WifiMonitor.SCAN_RESULTS_EVENT: 5201 s = "SCAN_RESULTS_EVENT"; 5202 break; 5203 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5204 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 5205 break; 5206 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5207 s = "AUTHENTICATION_FAILURE_EVENT"; 5208 break; 5209 case WifiMonitor.SSID_TEMP_DISABLED: 5210 s = "SSID_TEMP_DISABLED"; 5211 break; 5212 case WifiMonitor.SSID_REENABLED: 5213 s = "SSID_REENABLED"; 5214 break; 5215 case WifiMonitor.WPS_SUCCESS_EVENT: 5216 s = "WPS_SUCCESS_EVENT"; 5217 break; 5218 case WifiMonitor.WPS_FAIL_EVENT: 5219 s = "WPS_FAIL_EVENT"; 5220 break; 5221 case WifiMonitor.SUP_REQUEST_IDENTITY: 5222 s = "SUP_REQUEST_IDENTITY"; 5223 break; 5224 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5225 s = "NETWORK_CONNECTION_EVENT"; 5226 break; 5227 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5228 s = "NETWORK_DISCONNECTION_EVENT"; 5229 break; 5230 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5231 s = "ASSOCIATION_REJECTION_EVENT"; 5232 break; 5233 case CMD_SET_OPERATIONAL_MODE: 5234 s = "CMD_SET_OPERATIONAL_MODE"; 5235 break; 5236 case CMD_START_SCAN: 5237 s = "CMD_START_SCAN"; 5238 break; 5239 case CMD_ENABLE_BACKGROUND_SCAN: 5240 s = "CMD_ENABLE_BACKGROUND_SCAN"; 5241 break; 5242 case CMD_DISABLE_P2P_RSP: 5243 s = "CMD_DISABLE_P2P_RSP"; 5244 break; 5245 case CMD_DISABLE_P2P_REQ: 5246 s = "CMD_DISABLE_P2P_REQ"; 5247 break; 5248 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5249 s = "GOOD_LINK_DETECTED"; 5250 break; 5251 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5252 s = "POOR_LINK_DETECTED"; 5253 break; 5254 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 5255 s = "GROUP_CREATING_TIMED_OUT"; 5256 break; 5257 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5258 s = "P2P_CONNECTION_CHANGED"; 5259 break; 5260 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 5261 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 5262 break; 5263 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 5264 s = "P2P.SET_MIRACAST_MODE"; 5265 break; 5266 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 5267 s = "P2P.BLOCK_DISCOVERY"; 5268 break; 5269 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 5270 s = "P2P.SET_COUNTRY_CODE"; 5271 break; 5272 case WifiManager.CANCEL_WPS: 5273 s = "CANCEL_WPS"; 5274 break; 5275 case WifiManager.CANCEL_WPS_FAILED: 5276 s = "CANCEL_WPS_FAILED"; 5277 break; 5278 case WifiManager.CANCEL_WPS_SUCCEDED: 5279 s = "CANCEL_WPS_SUCCEDED"; 5280 break; 5281 case WifiManager.START_WPS: 5282 s = "START_WPS"; 5283 break; 5284 case WifiManager.START_WPS_SUCCEEDED: 5285 s = "START_WPS_SUCCEEDED"; 5286 break; 5287 case WifiManager.WPS_FAILED: 5288 s = "WPS_FAILED"; 5289 break; 5290 case WifiManager.WPS_COMPLETED: 5291 s = "WPS_COMPLETED"; 5292 break; 5293 case WifiManager.RSSI_PKTCNT_FETCH: 5294 s = "RSSI_PKTCNT_FETCH"; 5295 break; 5296 case CMD_IP_CONFIGURATION_LOST: 5297 s = "CMD_IP_CONFIGURATION_LOST"; 5298 break; 5299 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5300 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 5301 break; 5302 case CMD_STATIC_IP_SUCCESS: 5303 s = "CMD_STATIC_IP_SUCCESSFUL"; 5304 break; 5305 case CMD_STATIC_IP_FAILURE: 5306 s = "CMD_STATIC_IP_FAILURE"; 5307 break; 5308 case DhcpStateMachine.DHCP_SUCCESS: 5309 s = "DHCP_SUCCESS"; 5310 break; 5311 case DhcpStateMachine.DHCP_FAILURE: 5312 s = "DHCP_FAILURE"; 5313 break; 5314 case CMD_TARGET_BSSID: 5315 s = "CMD_TARGET_BSSID"; 5316 break; 5317 case CMD_ROAM_WATCHDOG_TIMER: 5318 s = "CMD_ROAM_WATCHDOG_TIMER"; 5319 break; 5320 case CMD_SCREEN_STATE_CHANGED: 5321 s = "CMD_SCREEN_STATE_CHANGED"; 5322 break; 5323 default: 5324 s = "what:" + Integer.toString(what); 5325 break; 5326 } 5327 return s; 5328 } 5329 5330 void registerConnected() { 5331 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 5332 long now_ms = System.currentTimeMillis(); 5333 // We are switching away from this configuration, 5334 // hence record the time we were connected last 5335 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 5336 if (config != null) { 5337 config.lastConnected = System.currentTimeMillis(); 5338 } 5339 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 5340 } 5341 } 5342 5343 void registerDisconnected() { 5344 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 5345 long now_ms = System.currentTimeMillis(); 5346 // We are switching away from this configuration, 5347 // hence record the time we were connected last 5348 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 5349 if (config != null) { 5350 config.lastDisconnected = System.currentTimeMillis(); 5351 } 5352 } 5353 } 5354 5355 WifiConfiguration getCurrentWifiConfiguration() { 5356 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 5357 return null; 5358 } 5359 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 5360 } 5361 5362 String getCurrentBSSID() { 5363 if (linkDebouncing) { 5364 return null; 5365 } 5366 return mLastBssid; 5367 } 5368 5369 class ConnectModeState extends State { 5370 @Override 5371 public boolean processMessage(Message message) { 5372 WifiConfiguration config; 5373 int netId; 5374 boolean ok; 5375 String bssid; 5376 String ssid; 5377 NetworkUpdateResult result; 5378 logStateAndMessage(message, getClass().getSimpleName()); 5379 5380 switch (message.what) { 5381 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5382 didBlackListBSSID = false; 5383 bssid = (String) message.obj; 5384 if (bssid == null || TextUtils.isEmpty(bssid)) { 5385 // If BSSID is null, use the target roam BSSID 5386 bssid = mTargetRoamBSSID; 5387 } 5388 if (bssid != null) { 5389 // If we have a BSSID, tell configStore to black list it 5390 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, 5391 bssid, false); 5392 } 5393 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 5394 break; 5395 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5396 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 5397 break; 5398 case WifiMonitor.SSID_TEMP_DISABLED: 5399 case WifiMonitor.SSID_REENABLED: 5400 String substr = (String) message.obj; 5401 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 5402 "temp-disabled" : "re-enabled"; 5403 loge("ConnectModeState SSID state=" + en + " nid=" 5404 + Integer.toString(message.arg1) + " [" + substr + "]"); 5405 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 5406 WifiMonitor.SSID_REENABLED, substr); 5407 break; 5408 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5409 SupplicantState state = handleSupplicantStateChange(message); 5410 // A driver/firmware hang can now put the interface in a down state. 5411 // We detect the interface going down and recover from it 5412 if (!SupplicantState.isDriverActive(state)) { 5413 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 5414 handleNetworkDisconnect(); 5415 } 5416 log("Detected an interface down, restart driver"); 5417 transitionTo(mDriverStoppedState); 5418 sendMessage(CMD_START_DRIVER); 5419 break; 5420 } 5421 5422 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 5423 // when authentication times out after a successful connection, 5424 // we can figure this from the supplicant state. If supplicant 5425 // state is DISCONNECTED, but the mNetworkInfo says we are not 5426 // disconnected, we need to handle a disconnection 5427 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 5428 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 5429 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 5430 handleNetworkDisconnect(); 5431 transitionTo(mDisconnectedState); 5432 } 5433 break; 5434 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5435 if (message.arg1 == 1) { 5436 mWifiNative.disconnect(); 5437 mTemporarilyDisconnectWifi = true; 5438 } else { 5439 mWifiNative.reconnect(); 5440 mTemporarilyDisconnectWifi = false; 5441 } 5442 break; 5443 case CMD_ADD_OR_UPDATE_NETWORK: 5444 config = (WifiConfiguration) message.obj; 5445 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, 5446 mWifiConfigStore.addOrUpdateNetwork(config)); 5447 break; 5448 case CMD_REMOVE_NETWORK: 5449 ok = mWifiConfigStore.removeNetwork(message.arg1); 5450 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5451 break; 5452 case CMD_ENABLE_NETWORK: 5453 boolean others = message.arg2 == 1; 5454 // Tell autojoin the user did try to select to that network 5455 // However, do NOT persist the choice by bumping the priority of the network 5456 if (others) { 5457 mWifiAutoJoinController. 5458 updateConfigurationHistory(message.arg1, true, false); 5459 // Set the last selected configuration so as to allow the system to 5460 // stick the last user choice without persisting the choice 5461 mWifiConfigStore.setLastSelectedConfiguration(message.arg1); 5462 5463 // Remember time of last connection attempt 5464 lastConnectAttempt = System.currentTimeMillis(); 5465 5466 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 5467 } 5468 // Cancel auto roam requests 5469 autoRoamSetBSSID(message.arg1, "any"); 5470 5471 ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1); 5472 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 5473 break; 5474 case CMD_ENABLE_ALL_NETWORKS: 5475 long time = android.os.SystemClock.elapsedRealtime(); 5476 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 5477 mWifiConfigStore.enableAllNetworks(); 5478 mLastEnableAllNetworksTime = time; 5479 } 5480 break; 5481 case WifiManager.DISABLE_NETWORK: 5482 if (mWifiConfigStore.disableNetwork(message.arg1, 5483 WifiConfiguration.DISABLED_UNKNOWN_REASON) == true) { 5484 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 5485 } else { 5486 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 5487 WifiManager.ERROR); 5488 } 5489 break; 5490 case CMD_BLACKLIST_NETWORK: 5491 mWifiNative.addToBlacklist((String) message.obj); 5492 break; 5493 case CMD_CLEAR_BLACKLIST: 5494 mWifiNative.clearBlacklist(); 5495 break; 5496 case CMD_SAVE_CONFIG: 5497 ok = mWifiConfigStore.saveConfig(); 5498 5499 if (DBG) loge("wifistatemachine did save config " + ok); 5500 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 5501 5502 // Inform the backup manager about a data change 5503 IBackupManager ibm = IBackupManager.Stub.asInterface( 5504 ServiceManager.getService(Context.BACKUP_SERVICE)); 5505 if (ibm != null) { 5506 try { 5507 ibm.dataChanged("com.android.providers.settings"); 5508 } catch (Exception e) { 5509 // Try again later 5510 } 5511 } 5512 break; 5513 case CMD_GET_CONFIGURED_NETWORKS: 5514 replyToMessage(message, message.what, 5515 mWifiConfigStore.getConfiguredNetworks()); 5516 break; 5517 case WifiMonitor.SUP_REQUEST_IDENTITY: 5518 // Supplicant lacks credentials to connect to that network, hence black list 5519 ssid = (String) message.obj; 5520 5521 if (targetWificonfiguration != null && ssid != null 5522 && targetWificonfiguration.SSID != null 5523 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 5524 mWifiConfigStore.handleSSIDStateChange(targetWificonfiguration.networkId, 5525 false, "AUTH_FAILED no identity"); 5526 } 5527 // Disconnect now, as we don't have any way to fullfill the supplicant request. 5528 mWifiConfigStore.setLastSelectedConfiguration 5529 (WifiConfiguration.INVALID_NETWORK_ID); 5530 mWifiNative.disconnect(); 5531 break; 5532 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 5533 logd("Received SUP_REQUEST_SIM_AUTH"); 5534 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 5535 if (requestData != null) { 5536 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 5537 handleGsmAuthRequest(requestData); 5538 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA) { 5539 handle3GAuthRequest(requestData); 5540 } 5541 } else { 5542 loge("Invalid sim auth request"); 5543 } 5544 break; 5545 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5546 replyToMessage(message, message.what, 5547 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 5548 break; 5549 /* Do a redundant disconnect without transition */ 5550 case CMD_DISCONNECT: 5551 mWifiConfigStore.setLastSelectedConfiguration 5552 (WifiConfiguration.INVALID_NETWORK_ID); 5553 mWifiNative.disconnect(); 5554 break; 5555 case CMD_RECONNECT: 5556 lastConnectAttempt = System.currentTimeMillis(); 5557 mWifiNative.reconnect(); 5558 break; 5559 case CMD_REASSOCIATE: 5560 lastConnectAttempt = System.currentTimeMillis(); 5561 mWifiNative.reassociate(); 5562 break; 5563 case CMD_RELOAD_TLS_AND_RECONNECT: 5564 if (mWifiConfigStore.needsUnlockedKeyStore()) { 5565 logd("Reconnecting to give a chance to un-connected TLS networks"); 5566 mWifiNative.disconnect(); 5567 lastConnectAttempt = System.currentTimeMillis(); 5568 mWifiNative.reconnect(); 5569 } 5570 break; 5571 case CMD_AUTO_ROAM: 5572 return HANDLED; 5573 case CMD_AUTO_CONNECT: 5574 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 5575 * associated status to the STATUS command but somehow-someplace still thinks 5576 * it is associated and thus will ignore select/reconnect command with 5577 * following message: 5578 * "Already associated with the selected network - do nothing" 5579 * 5580 * Hence, sends a disconnect to supplicant first. 5581 */ 5582 mWifiNative.disconnect(); 5583 5584 /* connect command coming from auto-join */ 5585 config = (WifiConfiguration) message.obj; 5586 netId = message.arg1; 5587 int roam = message.arg2; 5588 loge("CMD_AUTO_CONNECT sup state " 5589 + mSupplicantStateTracker.getSupplicantStateName() 5590 + " my state " + getCurrentState().getName() 5591 + " nid=" + Integer.toString(netId) 5592 + " roam=" + Integer.toString(roam)); 5593 if (config == null) { 5594 loge("AUTO_CONNECT and no config, bail out..."); 5595 break; 5596 } 5597 5598 /* Make sure we cancel any previous roam request */ 5599 autoRoamSetBSSID(config, "any"); 5600 5601 /* Save the network config */ 5602 loge("CMD_AUTO_CONNECT will save config -> " + config.SSID 5603 + " nid=" + Integer.toString(netId)); 5604 result = mWifiConfigStore.saveNetwork(config); 5605 netId = result.getNetworkId(); 5606 loge("CMD_AUTO_CONNECT did save config -> " 5607 + " nid=" + Integer.toString(netId)); 5608 5609 if (mWifiConfigStore.selectNetwork(netId) && 5610 mWifiNative.reconnect()) { 5611 lastConnectAttempt = System.currentTimeMillis(); 5612 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 5613 // We selected a better config, 5614 // maybe because we could not see the last user 5615 // selection, then forget it. We will remember the selection 5616 // only if it was persisted. 5617 mWifiConfigStore. 5618 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 5619 5620 mAutoRoaming = roam; 5621 if (isRoaming() || linkDebouncing) { 5622 transitionTo(mRoamingState); 5623 } else { 5624 transitionTo(mDisconnectingState); 5625 } 5626 } else { 5627 loge("Failed to connect config: " + config + " netId: " + netId); 5628 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5629 WifiManager.ERROR); 5630 break; 5631 } 5632 break; 5633 case WifiManager.CONNECT_NETWORK: 5634 /** 5635 * The connect message can contain a network id passed as arg1 on message or 5636 * or a config passed as obj on message. 5637 * For a new network, a config is passed to create and connect. 5638 * For an existing network, a network id is passed 5639 */ 5640 netId = message.arg1; 5641 config = (WifiConfiguration) message.obj; 5642 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 5643 5644 if (config == null) { 5645 loge("CONNECT_NETWORK id=" + Integer.toString(netId) + " " 5646 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 5647 + getCurrentState().getName()); 5648 } else { 5649 loge("CONNECT_NETWORK id=" + Integer.toString(netId) 5650 + " config=" + config.SSID 5651 + " cnid=" + config.networkId 5652 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 5653 + " my state " + getCurrentState().getName()); 5654 } 5655 5656 autoRoamSetBSSID(netId, "any"); 5657 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 5658 5659 /* Save the network config */ 5660 if (config != null) { 5661 result = mWifiConfigStore.saveNetwork(config); 5662 netId = result.getNetworkId(); 5663 } 5664 /* Tell autojoin the user did try to connect to that network */ 5665 mWifiAutoJoinController.updateConfigurationHistory(netId, true, true); 5666 5667 mWifiConfigStore.setLastSelectedConfiguration(netId); 5668 5669 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 5670 && mLastNetworkId != netId) { 5671 /** Supplicant will ignore the reconnect if we are currently associated, 5672 * hence trigger a disconnect 5673 */ 5674 mWifiNative.disconnect(); 5675 } 5676 5677 if (mWifiConfigStore.selectNetwork(netId) && 5678 mWifiNative.reconnect()) { 5679 lastConnectAttempt = System.currentTimeMillis(); 5680 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 5681 5682 /* The state tracker handles enabling networks upon completion/failure */ 5683 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 5684 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 5685 /* Expect a disconnection from the old connection */ 5686 transitionTo(mDisconnectingState); 5687 } else { 5688 loge("Failed to connect config: " + config + " netId: " + netId); 5689 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 5690 WifiManager.ERROR); 5691 break; 5692 } 5693 break; 5694 case WifiManager.SAVE_NETWORK: 5695 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 5696 // Fall thru 5697 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 5698 lastSavedConfigurationAttempt = null; // Used for debug 5699 config = (WifiConfiguration) message.obj; 5700 if (config == null) { 5701 loge("ERROR: SAVE_NETWORK with null configuration" 5702 + mSupplicantStateTracker.getSupplicantStateName() 5703 + " my state " + getCurrentState().getName()); 5704 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5705 WifiManager.ERROR); 5706 break; 5707 } 5708 lastSavedConfigurationAttempt = new WifiConfiguration(config); 5709 int nid = config.networkId; 5710 loge("SAVE_NETWORK id=" + Integer.toString(nid) 5711 + " config=" + config.SSID 5712 + " nid=" + config.networkId 5713 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 5714 + " my state " + getCurrentState().getName()); 5715 5716 result = mWifiConfigStore.saveNetwork(config); 5717 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 5718 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 5719 if (result.hasIpChanged()) { 5720 // The currently connection configuration was changed 5721 // We switched from DHCP to static or from static to DHCP, or the 5722 // static IP address has changed. 5723 log("Reconfiguring IP on connection"); 5724 // TODO: clear addresses and disable IPv6 5725 // to simplify obtainingIpState. 5726 transitionTo(mObtainingIpState); 5727 } 5728 if (result.hasProxyChanged()) { 5729 log("Reconfiguring proxy on connection"); 5730 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 5731 } 5732 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 5733 if (VDBG) { 5734 loge("Success save network nid=" 5735 + Integer.toString(result.getNetworkId())); 5736 } 5737 } 5738 5739 /** 5740 * Tell autojoin the user did try to modify and save that network, 5741 * and interpret the SAVE_NETWORK as a request to connect 5742 */ 5743 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 5744 , true, true); 5745 mWifiAutoJoinController.attemptAutoJoin(); 5746 5747 } else { 5748 loge("Failed to save network"); 5749 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 5750 WifiManager.ERROR); 5751 } 5752 break; 5753 case WifiManager.FORGET_NETWORK: 5754 // Debug only, remember last configuration that was forgotten 5755 WifiConfiguration toRemove 5756 = mWifiConfigStore.getWifiConfiguration(message.arg1); 5757 if (toRemove == null) { 5758 lastForgetConfigurationAttempt = null; 5759 } else { 5760 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 5761 } 5762 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 5763 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 5764 } else { 5765 loge("Failed to forget network"); 5766 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 5767 WifiManager.ERROR); 5768 } 5769 break; 5770 case WifiManager.START_WPS: 5771 WpsInfo wpsInfo = (WpsInfo) message.obj; 5772 WpsResult wpsResult; 5773 switch (wpsInfo.setup) { 5774 case WpsInfo.PBC: 5775 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 5776 break; 5777 case WpsInfo.KEYPAD: 5778 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 5779 break; 5780 case WpsInfo.DISPLAY: 5781 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 5782 break; 5783 default: 5784 wpsResult = new WpsResult(Status.FAILURE); 5785 loge("Invalid setup for WPS"); 5786 break; 5787 } 5788 mWifiConfigStore.setLastSelectedConfiguration 5789 (WifiConfiguration.INVALID_NETWORK_ID); 5790 if (wpsResult.status == Status.SUCCESS) { 5791 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 5792 transitionTo(mWpsRunningState); 5793 } else { 5794 loge("Failed to start WPS with config " + wpsInfo.toString()); 5795 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 5796 } 5797 break; 5798 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5799 if (DBG) log("Network connection established"); 5800 mLastNetworkId = message.arg1; 5801 mLastBssid = (String) message.obj; 5802 5803 mWifiInfo.setBSSID(mLastBssid); 5804 mWifiInfo.setNetworkId(mLastNetworkId); 5805 // Send event to CM & network change broadcast 5806 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 5807 sendNetworkStateChangeBroadcast(mLastBssid); 5808 transitionTo(mObtainingIpState); 5809 break; 5810 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5811 // Calling handleNetworkDisconnect here is redundant because we might already 5812 // have called it when leaving L2ConnectedState to go to disconnecting state 5813 // or thru other path 5814 // We should normally check the mWifiInfo or mLastNetworkId so as to check 5815 // if they are valid, and only in this case call handleNEtworkDisconnect, 5816 // TODO: this should be fixed for a L MR release 5817 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 5818 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 5819 // at the chip etc... 5820 if (DBG) log("ConnectModeState: Network connection lost "); 5821 handleNetworkDisconnect(); 5822 transitionTo(mDisconnectedState); 5823 break; 5824 default: 5825 return NOT_HANDLED; 5826 } 5827 return HANDLED; 5828 } 5829 } 5830 5831 private class WifiNetworkAgent extends NetworkAgent { 5832 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 5833 NetworkCapabilities nc, LinkProperties lp, int score) { 5834 super(l, c, TAG, ni, nc, lp, score); 5835 } 5836 protected void unwanted() { 5837 // Ignore if we're not the current networkAgent. 5838 if (this != mNetworkAgent) return; 5839 // TODO - don't want this network. What to do? 5840 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 5841 + Integer.toString(mWifiInfo.score)); 5842 unwantedNetwork(); 5843 } 5844 } 5845 5846 void unwantedNetwork() { 5847 sendMessage(CMD_UNWANTED_NETWORK); 5848 } 5849 5850 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 5851 HashSet<Integer> channels 5852 = mWifiConfigStore.makeChannelList(config, 5853 ONE_HOUR_MILLI, restrictChannelList); 5854 if (channels != null && channels.size() != 0) { 5855 StringBuilder freqs = new StringBuilder(); 5856 boolean first = true; 5857 for (Integer channel : channels) { 5858 if (!first) 5859 freqs.append(","); 5860 freqs.append(channel.toString()); 5861 first = false; 5862 } 5863 if (DBG) { 5864 loge("WifiStateMachine starting scan with " + freqs); 5865 } 5866 // Call wifi native to start the scan 5867 if (startScanNative( 5868 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 5869 freqs.toString())) { 5870 // Only count battery consumption if scan request is accepted 5871 noteScanStart(SCAN_ALARM_SOURCE, null); 5872 // Return true 5873 } 5874 return true; 5875 } else { 5876 return false; 5877 } 5878 } 5879 5880 class L2ConnectedState extends State { 5881 @Override 5882 public void enter() { 5883 mRssiPollToken++; 5884 if (mEnableRssiPolling) { 5885 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 5886 } 5887 if (mNetworkAgent != null) { 5888 loge("Have NetworkAgent when entering L2Connected"); 5889 setNetworkDetailedState(DetailedState.DISCONNECTED); 5890 } 5891 setNetworkDetailedState(DetailedState.CONNECTING); 5892 5893 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 5894 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 5895 } 5896 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 5897 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 5898 mLinkProperties, 60); 5899 } 5900 5901 @Override 5902 public void exit() { 5903 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 5904 // Bug: 15347363 5905 // For paranoia's sake, call handleNetworkDisconnect 5906 // only if BSSID is null or last networkId 5907 // is not invalid. 5908 if (DBG) { 5909 StringBuilder sb = new StringBuilder(); 5910 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 5911 if (mLastBssid !=null) { 5912 sb.append(" ").append(mLastBssid); 5913 } 5914 } 5915 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 5916 handleNetworkDisconnect(); 5917 } 5918 } 5919 5920 @Override 5921 public boolean processMessage(Message message) { 5922 logStateAndMessage(message, getClass().getSimpleName()); 5923 5924 switch (message.what) { 5925 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5926 handlePreDhcpSetup(); 5927 break; 5928 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5929 handlePostDhcpSetup(); 5930 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 5931 if (DBG) log("WifiStateMachine DHCP successful"); 5932 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 5933 // We advance to mVerifyingLinkState because handleIPv4Success will call 5934 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 5935 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 5936 if (DBG) { 5937 int count = -1; 5938 WifiConfiguration config = getCurrentWifiConfiguration(); 5939 if (config != null) { 5940 count = config.numConnectionFailures; 5941 } 5942 log("WifiStateMachine DHCP failure count=" + count); 5943 } 5944 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 5945 // As above, we transition to mDisconnectingState via updateLinkProperties. 5946 } 5947 break; 5948 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5949 handleSuccessfulIpConfiguration(); 5950 sendConnectedState(); 5951 transitionTo(mConnectedState); 5952 break; 5953 case CMD_IP_CONFIGURATION_LOST: 5954 handleIpConfigurationLost(); 5955 transitionTo(mDisconnectingState); 5956 break; 5957 case CMD_DISCONNECT: 5958 mWifiNative.disconnect(); 5959 transitionTo(mDisconnectingState); 5960 break; 5961 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5962 if (message.arg1 == 1) { 5963 mWifiNative.disconnect(); 5964 mTemporarilyDisconnectWifi = true; 5965 transitionTo(mDisconnectingState); 5966 } 5967 break; 5968 case CMD_SET_OPERATIONAL_MODE: 5969 if (message.arg1 != CONNECT_MODE) { 5970 sendMessage(CMD_DISCONNECT); 5971 deferMessage(message); 5972 } 5973 break; 5974 case CMD_SET_COUNTRY_CODE: 5975 deferMessage(message); 5976 break; 5977 case CMD_START_SCAN: 5978 if (DBG) { 5979 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 5980 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 5981 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 5982 + " BSSID=" + mTargetRoamBSSID 5983 + " RSSI=" + mWifiInfo.getRssi()); 5984 } 5985 if (message.arg1 == SCAN_ALARM_SOURCE) { 5986 boolean tryFullBandScan = false; 5987 boolean restrictChannelList = false; 5988 long now_ms = System.currentTimeMillis(); 5989 if (DBG) { 5990 loge("WifiStateMachine CMD_START_SCAN with age=" 5991 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 5992 + " interval=" + fullBandConnectedTimeIntervalMilli 5993 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 5994 } 5995 if (mWifiInfo != null) { 5996 if ((now_ms - lastFullBandConnectedTimeMilli) 5997 > fullBandConnectedTimeIntervalMilli) { 5998 if (DBG) { 5999 loge("WifiStateMachine CMD_START_SCAN try full band scan age=" 6000 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 6001 + " interval=" + fullBandConnectedTimeIntervalMilli 6002 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 6003 } 6004 tryFullBandScan = true; 6005 } 6006 6007 if (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 30) { 6008 // Too much traffic at the interface, hence no full band scan 6009 if (DBG) { 6010 loge("WifiStateMachine CMD_START_SCAN " + 6011 "prevent full band scan due to pkt rate"); 6012 } 6013 tryFullBandScan = false; 6014 } 6015 6016 if (mWifiInfo.txSuccessRate > 6017 mWifiConfigStore.maxTxPacketForNetworkSwitching 6018 || mWifiInfo.rxSuccessRate > 6019 mWifiConfigStore.maxRxPacketForNetworkSwitching) { 6020 // Don't scan if lots of packets are being sent 6021 restrictChannelList = true; 6022 if (mAllowScansWithTraffic == 0) { 6023 if (DBG) { 6024 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 6025 + " ...and ignore scans" 6026 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 6027 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 6028 } 6029 return HANDLED; 6030 } 6031 } 6032 } 6033 6034 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 6035 if (DBG) { 6036 loge("WifiStateMachine CMD_START_SCAN full=" + 6037 tryFullBandScan); 6038 } 6039 if (currentConfiguration != null) { 6040 if (tryFullBandScan) { 6041 lastFullBandConnectedTimeMilli = now_ms; 6042 if (fullBandConnectedTimeIntervalMilli 6043 < mWifiConfigStore.associatedPartialScanPeriodMs) { 6044 // Sanity 6045 fullBandConnectedTimeIntervalMilli 6046 = mWifiConfigStore.associatedPartialScanPeriodMs; 6047 } 6048 if (fullBandConnectedTimeIntervalMilli 6049 < maxFullBandConnectedTimeIntervalMilli) { 6050 // Increase the interval 6051 fullBandConnectedTimeIntervalMilli 6052 = fullBandConnectedTimeIntervalMilli 6053 * mWifiConfigStore.associatedFullScanBackoff / 8; 6054 6055 if (DBG) { 6056 loge("WifiStateMachine CMD_START_SCAN bump interval =" 6057 + fullBandConnectedTimeIntervalMilli); 6058 } 6059 } 6060 handleScanRequest( 6061 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6062 } else { 6063 if (!startScanForConfiguration( 6064 currentConfiguration, restrictChannelList)) { 6065 if (DBG) { 6066 loge("WifiStateMachine starting scan, " + 6067 " did not find channels -> full"); 6068 } 6069 handleScanRequest( 6070 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6071 } 6072 } 6073 } 6074 } else { 6075 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6076 } 6077 break; 6078 /* Ignore connection to same network */ 6079 case WifiManager.CONNECT_NETWORK: 6080 int netId = message.arg1; 6081 if (mWifiInfo.getNetworkId() == netId) { 6082 break; 6083 } 6084 return NOT_HANDLED; 6085 /* Ignore */ 6086 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6087 break; 6088 case CMD_RSSI_POLL: 6089 if (message.arg1 == mRssiPollToken) { 6090 WifiLinkLayerStats stats = null; 6091 if (DBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 6092 // Try a reading L2 stats a couple of time, allow for a few failures 6093 // in case the HAL/drivers are not completely initialized once we get there 6094 if (mWifiLinkLayerStatsSupported > 0) { 6095 stats = mWifiNative.getWifiLinkLayerStats("wlan0"); 6096 if (DBG && stats != null) { 6097 loge(stats.toString()); 6098 } 6099 if (stats != null) { 6100 // Sanity check the results provided by driver 6101 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 6102 && (stats.rssi_mgmt == 0 6103 || stats.beacon_rx == 0)) { 6104 stats = null; 6105 } 6106 } 6107 if (stats == null && mWifiLinkLayerStatsSupported > 0) { 6108 mWifiLinkLayerStatsSupported -= 1; 6109 } 6110 } 6111 // Get Info and continue polling 6112 fetchRssiLinkSpeedAndFrequencyNative(); 6113 calculateWifiScore(stats); 6114 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 6115 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 6116 } else { 6117 // Polling has completed 6118 } 6119 break; 6120 case CMD_ENABLE_RSSI_POLL: 6121 mEnableRssiPolling = (message.arg1 == 1); 6122 mRssiPollToken++; 6123 if (mEnableRssiPolling) { 6124 // First poll 6125 fetchRssiLinkSpeedAndFrequencyNative(); 6126 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 6127 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 6128 } 6129 break; 6130 case WifiManager.RSSI_PKTCNT_FETCH: 6131 RssiPacketCountInfo info = new RssiPacketCountInfo(); 6132 fetchRssiLinkSpeedAndFrequencyNative(); 6133 info.rssi = mWifiInfo.getRssi(); 6134 fetchPktcntNative(info); 6135 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 6136 break; 6137 case CMD_UNWANTED_NETWORK: 6138 // mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 6139 // disconnecting is probably too rough and reduce the chance we recover quickly. 6140 // we should not have to disconnect, instead rely on network stack to send data 6141 // traffic somewhere else but remember that this network is roamable with a 6142 // low wifi score threshold 6143 sendMessage(CMD_DISCONNECT); 6144 break; 6145 case CMD_DELAYED_NETWORK_DISCONNECT: 6146 if (!linkDebouncing) { 6147 6148 // Ignore if we are not debouncing 6149 loge("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 6150 + message.arg1); 6151 return HANDLED; 6152 } else { 6153 loge("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 6154 + message.arg1); 6155 6156 linkDebouncing = false; 6157 // If we are still debouncing while this message comes, 6158 // it means we were not able to reconnect within the alloted time 6159 // = LINK_FLAPPING_DEBOUNCE_MSEC 6160 // and thus, trigger a real disconnect 6161 handleNetworkDisconnect(); 6162 transitionTo(mDisconnectedState); 6163 } 6164 break; 6165 default: 6166 return NOT_HANDLED; 6167 } 6168 6169 return HANDLED; 6170 } 6171 } 6172 6173 class ObtainingIpState extends State { 6174 @Override 6175 public void enter() { 6176 if (DBG) { 6177 String key = ""; 6178 if (getCurrentWifiConfiguration() != null) { 6179 key = getCurrentWifiConfiguration().configKey(); 6180 } 6181 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 6182 + " " + key + " " 6183 + " roam=" + mAutoRoaming 6184 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 6185 + " watchdog= " + obtainingIpWatchdogCount); 6186 } 6187 6188 // Reset link Debouncing, indicating we have successfully re-connected to the AP 6189 // We might still be roaming 6190 linkDebouncing = false; 6191 6192 try { 6193 mNwService.enableIpv6(mInterfaceName); 6194 } catch (RemoteException re) { 6195 loge("Failed to enable IPv6: " + re); 6196 } catch (IllegalStateException e) { 6197 loge("Failed to enable IPv6: " + e); 6198 } 6199 6200 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 6201 if (isRoaming()) { 6202 renewDhcp(); 6203 } else { 6204 // Remove any IP address on the interface in case we're switching from static 6205 // IP configuration to DHCP. This is safe because if we get here when not 6206 // roaming, we don't have a usable address. 6207 clearIPv4Address(mInterfaceName); 6208 startDhcp(); 6209 } 6210 obtainingIpWatchdogCount++; 6211 loge("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 6212 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 6213 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 6214 } else { 6215 // stop any running dhcp before assigning static IP 6216 stopDhcp(); 6217 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 6218 mLastNetworkId); 6219 if (config.ipAddress == null) { 6220 loge("Static IP lacks address"); 6221 sendMessage(CMD_STATIC_IP_FAILURE); 6222 } else { 6223 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 6224 ifcg.setLinkAddress(config.ipAddress); 6225 ifcg.setInterfaceUp(); 6226 try { 6227 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 6228 if (DBG) log("Static IP configuration succeeded"); 6229 DhcpResults dhcpResults = new DhcpResults(config); 6230 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 6231 } catch (RemoteException re) { 6232 loge("Static IP configuration failed: " + re); 6233 sendMessage(CMD_STATIC_IP_FAILURE); 6234 } catch (IllegalStateException e) { 6235 loge("Static IP configuration failed: " + e); 6236 sendMessage(CMD_STATIC_IP_FAILURE); 6237 } 6238 } 6239 } 6240 } 6241 @Override 6242 public boolean processMessage(Message message) { 6243 logStateAndMessage(message, getClass().getSimpleName()); 6244 6245 switch(message.what) { 6246 case CMD_STATIC_IP_SUCCESS: 6247 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 6248 break; 6249 case CMD_STATIC_IP_FAILURE: 6250 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 6251 break; 6252 case CMD_AUTO_CONNECT: 6253 case CMD_AUTO_ROAM: 6254 break; 6255 case WifiManager.SAVE_NETWORK: 6256 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 6257 deferMessage(message); 6258 break; 6259 /* Defer any power mode changes since we must keep active power mode at DHCP */ 6260 case CMD_SET_HIGH_PERF_MODE: 6261 deferMessage(message); 6262 break; 6263 /* Defer scan request since we should not switch to other channels at DHCP */ 6264 case CMD_START_SCAN: 6265 deferMessage(message); 6266 break; 6267 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6268 if (message.arg1 == obtainingIpWatchdogCount) { 6269 loge("ObtainingIpAddress: Watchdog Triggered, count=" 6270 + obtainingIpWatchdogCount); 6271 handleIpConfigurationLost(); 6272 transitionTo(mDisconnectingState); 6273 break; 6274 } 6275 default: 6276 return NOT_HANDLED; 6277 } 6278 return HANDLED; 6279 } 6280 } 6281 6282 class VerifyingLinkState extends State { 6283 @Override 6284 public void enter() { 6285 log(getName() + " enter"); 6286 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 6287 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 6288 sendNetworkStateChangeBroadcast(mLastBssid); 6289 // End roaming 6290 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 6291 } 6292 @Override 6293 public boolean processMessage(Message message) { 6294 logStateAndMessage(message, getClass().getSimpleName()); 6295 6296 switch (message.what) { 6297 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6298 // Stay here 6299 log(getName() + " POOR_LINK_DETECTED: no transition"); 6300 break; 6301 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 6302 log(getName() + " GOOD_LINK_DETECTED: transition to captive portal check"); 6303 6304 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 6305 sendConnectedState(); 6306 transitionTo(mConnectedState); 6307 break; 6308 case CMD_START_SCAN: 6309 deferMessage(message); 6310 break; 6311 default: 6312 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 6313 return NOT_HANDLED; 6314 } 6315 return HANDLED; 6316 } 6317 } 6318 6319 private void sendConnectedState() { 6320 // Send out a broadcast with the CAPTIVE_PORTAL_CHECK to preserve 6321 // existing behaviour. The captive portal check really happens after we 6322 // transition into DetailedState.CONNECTED. 6323 setNetworkDetailedState(DetailedState.CAPTIVE_PORTAL_CHECK); 6324 mWifiConfigStore.updateStatus(mLastNetworkId, 6325 DetailedState.CAPTIVE_PORTAL_CHECK); 6326 sendNetworkStateChangeBroadcast(mLastBssid); 6327 6328 setNetworkDetailedState(DetailedState.CONNECTED); 6329 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 6330 sendNetworkStateChangeBroadcast(mLastBssid); 6331 } 6332 6333 class RoamingState extends State { 6334 @Override 6335 public void enter() { 6336 if (DBG) { 6337 log("RoamingState Enter" 6338 + " mScreenOn=" + mScreenOn ); 6339 } 6340 setScanAlarm(false); 6341 6342 // Make sure we disconnect if roaming fails 6343 roamWatchdogCount++; 6344 loge("Start Roam Watchdog " + roamWatchdogCount); 6345 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 6346 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 6347 } 6348 @Override 6349 public boolean processMessage(Message message) { 6350 logStateAndMessage(message, getClass().getSimpleName()); 6351 6352 switch (message.what) { 6353 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6354 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 6355 return HANDLED; 6356 case CMD_UNWANTED_NETWORK: 6357 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 6358 return HANDLED; 6359 case CMD_SET_OPERATIONAL_MODE: 6360 if (message.arg1 != CONNECT_MODE) { 6361 deferMessage(message); 6362 } 6363 break; 6364 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6365 /** 6366 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 6367 * before NETWORK_DISCONNECTION_EVENT 6368 * And there is an associated BSSID corresponding to our target BSSID, then 6369 * we have missed the network disconnection, transition to mDisconnectedState 6370 * and handle the rest of the events there. 6371 */ 6372 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6373 if (stateChangeResult.state == SupplicantState.DISCONNECTED 6374 || stateChangeResult.state == SupplicantState.INACTIVE 6375 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 6376 if (DBG) { 6377 log("STATE_CHANGE_EVENT in roaming state " 6378 + stateChangeResult.toString() ); 6379 } 6380 if (stateChangeResult.BSSID != null 6381 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 6382 handleNetworkDisconnect(); 6383 transitionTo(mDisconnectedState); 6384 } 6385 } 6386 break; 6387 case CMD_ROAM_WATCHDOG_TIMER: 6388 if (roamWatchdogCount == message.arg1) { 6389 if (DBG) log("roaming watchdog! -> disconnect"); 6390 handleNetworkDisconnect(); 6391 mWifiNative.disconnect(); 6392 transitionTo(mDisconnectedState); 6393 } 6394 break; 6395 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6396 if (DBG) log("roaming and Network connection established"); 6397 mLastNetworkId = message.arg1; 6398 mLastBssid = (String) message.obj; 6399 mWifiInfo.setBSSID(mLastBssid); 6400 mWifiInfo.setNetworkId(mLastNetworkId); 6401 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 6402 /** 6403 * We already have an IP address, we are going to the ObtainingIpAddress 6404 * state to renew it. Other parts of the system interpret an 6405 * ObtainingIpState change as not having IP address anymore, 6406 * hence, don't send the state change there. */ 6407 // setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 6408 // sendNetworkStateChangeBroadcast(mLastBssid); 6409 transitionTo(mObtainingIpState); 6410 break; 6411 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6412 // Throw away but only if it corresponds to the network we're roaming to 6413 String bssid = (String)message.obj; 6414 if (true) { 6415 String target = ""; 6416 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 6417 log("NETWORK_DISCONNECTION_EVENT in roaming state" 6418 + " BSSID=" + bssid 6419 + " target=" + target); 6420 } 6421 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 6422 handleNetworkDisconnect(); 6423 transitionTo(mDisconnectedState); 6424 } 6425 break; 6426 case WifiMonitor.SSID_TEMP_DISABLED: 6427 // Auth error while roaming 6428 loge("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 6429 + " id=" + Integer.toString(message.arg1) 6430 + " isRoaming=" + isRoaming() 6431 + " roam=" + Integer.toString(mAutoRoaming)); 6432 if (message.arg1 == mLastNetworkId) { 6433 handleNetworkDisconnect(); 6434 transitionTo(mDisconnectingState); 6435 } 6436 return NOT_HANDLED; 6437 case CMD_START_SCAN: 6438 deferMessage(message); 6439 break; 6440 default: 6441 return NOT_HANDLED; 6442 } 6443 return HANDLED; 6444 } 6445 6446 @Override 6447 public void exit() { 6448 loge("WifiStateMachine: Leaving Roaming state"); 6449 } 6450 } 6451 6452 class ConnectedState extends State { 6453 @Override 6454 public void enter() { 6455 String address; 6456 updateDefaultRouteMacAddress(1000); 6457 if (DBG) { 6458 log("ConnectedState Enter " 6459 + " mScreenOn=" + mScreenOn 6460 + " scanperiod=" 6461 + Integer.toString(mWifiConfigStore.associatedPartialScanPeriodMs) ); 6462 } 6463 if (mScreenOn) { 6464 mCurrentScanAlarmMs = mWifiConfigStore.associatedPartialScanPeriodMs; 6465 setScanAlarm(true); 6466 } else { 6467 mCurrentScanAlarmMs = 0; 6468 } 6469 registerConnected(); 6470 lastConnectAttempt = 0; 6471 targetWificonfiguration = null; 6472 // Paranoia 6473 linkDebouncing = false; 6474 6475 // Not roaming anymore 6476 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 6477 6478 if (testNetworkDisconnect) { 6479 testNetworkDisconnectCounter++; 6480 loge("ConnectedState Enter start disconnect test " + 6481 testNetworkDisconnectCounter); 6482 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 6483 testNetworkDisconnectCounter, 0), 15000); 6484 } 6485 // Reenable all networks, allow for hidden networks to be scanned 6486 mWifiConfigStore.enableAllNetworks(); 6487 } 6488 @Override 6489 public boolean processMessage(Message message) { 6490 WifiConfiguration config = null; 6491 logStateAndMessage(message, getClass().getSimpleName()); 6492 6493 switch (message.what) { 6494 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 6495 if (DBG) log("Watchdog reports poor link"); 6496 transitionTo(mVerifyingLinkState); 6497 break; 6498 case CMD_UNWANTED_NETWORK: 6499 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 6500 mWifiNative.disconnect(); 6501 transitionTo(mDisconnectingState); 6502 return HANDLED; 6503 case CMD_TEST_NETWORK_DISCONNECT: 6504 // Force a disconnect 6505 if (message.arg1 == testNetworkDisconnectCounter) { 6506 mWifiNative.disconnect(); 6507 } 6508 break; 6509 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6510 config = getCurrentWifiConfiguration(); 6511 if (!linkDebouncing && config != null && config.autoJoinStatus 6512 == WifiConfiguration.AUTO_JOIN_ENABLED && ( 6513 (ScanResult.is24GHz(mWifiInfo.getFrequency()) 6514 && mWifiInfo.getRssi() > 6515 WifiConfiguration.BAD_RSSI_24) 6516 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 6517 && mWifiInfo.getRssi() > 6518 WifiConfiguration.BAD_RSSI_5))) { 6519 // Start de-bouncing the L2 disconnection: 6520 // this L2 disconnection might be spurious. 6521 // Hence we allow 7 seconds for the state machine to try 6522 // to reconnect, go thru the 6523 // roaming cycle and enter Obtaining IP address 6524 // before signalling the disconnect to ConnectivityService and L3 6525 startScanForConfiguration(getCurrentWifiConfiguration(), false); 6526 linkDebouncing = true; 6527 6528 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 6529 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 6530 if (DBG) { 6531 log("NETWORK_DISCONNECTION_EVENT in connected state" 6532 + " BSSID=" + mWifiInfo.getBSSID() 6533 + " RSSI=" + mWifiInfo.getRssi() 6534 + " freq=" + mWifiInfo.getFrequency() 6535 + " -> debounce"); 6536 } 6537 return HANDLED; 6538 } else { 6539 if (DBG) { 6540 int ajst = -1; 6541 if (config != null) ajst = config.autoJoinStatus; 6542 log("NETWORK_DISCONNECTION_EVENT in connected state" 6543 + " BSSID=" + mWifiInfo.getBSSID() 6544 + " RSSI=" + mWifiInfo.getRssi() 6545 + " freq=" + mWifiInfo.getFrequency() 6546 + " was debouncing=" + linkDebouncing 6547 + " ajst=" + ajst); 6548 } 6549 } 6550 break; 6551 case CMD_AUTO_ROAM: 6552 /* This will happen similarly to an Auto_CONNECT, except we specify the BSSID */ 6553 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 6554 * associated status thus the STATUS command but somehow-someplace still thinks 6555 * it is associated and thus will ignore select/reconnect command with 6556 * following message: 6557 * "Already associated with the selected network - do nothing" 6558 * 6559 * Hence, sends a disconnect to supplicant first. 6560 */ 6561 //mWifiNative.disconnect(); 6562 6563 /* Connect command coming from auto-join */ 6564 ScanResult candidate = (ScanResult)message.obj; 6565 String bssid = "any"; 6566 if (candidate != null && candidate.is5GHz()) { 6567 // Only lock BSSID for 5GHz networks 6568 bssid = candidate.BSSID; 6569 } 6570 int netId = mLastNetworkId; 6571 config = getCurrentWifiConfiguration(); 6572 6573 loge("CMD_AUTO_ROAM sup state " 6574 + mSupplicantStateTracker.getSupplicantStateName() 6575 + " my state " + getCurrentState().getName() 6576 + " nid=" + Integer.toString(netId) 6577 + " roam=" + Integer.toString(message.arg2) 6578 + bssid); 6579 if (config == null) { 6580 loge("AUTO_ROAM and no config, bail out..."); 6581 break; 6582 } 6583 6584 /* Save the BSSID so as to lock it @ firmware */ 6585 autoRoamSetBSSID(config, bssid); 6586 6587 /* Save the network config */ 6588 loge("CMD_AUTO_ROAM will save config -> " + config.SSID 6589 + " nid=" + Integer.toString(netId)); 6590 NetworkUpdateResult result = mWifiConfigStore.saveNetwork(config); 6591 netId = result.getNetworkId(); 6592 loge("CMD_AUTO_ROAM did save config -> " 6593 + " nid=" + Integer.toString(netId) 6594 + " lastnid=" + Integer.toString(mLastNetworkId)); 6595 boolean ret = false; 6596 if (netId != mLastNetworkId) { 6597 if (mWifiConfigStore.selectNetwork(netId) && 6598 mWifiNative.reconnect()) { 6599 ret = true; 6600 } 6601 } else { 6602 ret = mWifiNative.reassociate(); 6603 } 6604 if (ret) { 6605 lastConnectAttempt = System.currentTimeMillis(); 6606 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6607 6608 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 6609 mAutoRoaming = message.arg2; 6610 transitionTo(mRoamingState); 6611 6612 } else { 6613 loge("Failed to connect config: " + config + " netId: " + netId); 6614 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6615 WifiManager.ERROR); 6616 break; 6617 } 6618 break; 6619 default: 6620 return NOT_HANDLED; 6621 } 6622 return HANDLED; 6623 } 6624 6625 @Override 6626 public void exit() { 6627 loge("WifiStateMachine: Leaving Connected state"); 6628 setScanAlarm(false); 6629 } 6630 } 6631 6632 class DisconnectingState extends State { 6633 6634 @Override 6635 public void enter() { 6636 mCurrentScanAlarmMs = mDisconnectedScanPeriodMs; 6637 6638 if (PDBG) { 6639 loge(" Enter DisconnectingState State scan interval " + mFrameworkScanIntervalMs 6640 + " mEnableBackgroundScan= " + mEnableBackgroundScan 6641 + " screenOn=" + mScreenOn); 6642 } 6643 if (mScreenOn) { 6644 setScanAlarm(true); 6645 } 6646 6647 // Make sure we disconnect: we enter this state prior connecting to a new 6648 // network, waiting for either a DISCONECT event or a SUPPLICANT_STATE_CHANGE 6649 // event which in this case will be indicating that supplicant started to associate. 6650 // In some cases supplicant doesn't ignore the connect requests (it might not 6651 // find the target SSID in its cache), 6652 // Therefore we end up stuck that state, hence the need for the watchdog. 6653 disconnectingWatchdogCount++; 6654 loge("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 6655 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 6656 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 6657 } 6658 6659 @Override 6660 public boolean processMessage(Message message) { 6661 logStateAndMessage(message, getClass().getSimpleName()); 6662 switch (message.what) { 6663 case CMD_SET_OPERATIONAL_MODE: 6664 if (message.arg1 != CONNECT_MODE) { 6665 deferMessage(message); 6666 } 6667 break; 6668 case CMD_START_SCAN: 6669 // Ignore scans while disconnecting 6670 return HANDLED; 6671 case CMD_DISCONNECTING_WATCHDOG_TIMER: 6672 if (disconnectingWatchdogCount == message.arg1) { 6673 if (DBG) log("disconnecting watchdog! -> disconnect"); 6674 handleNetworkDisconnect(); 6675 transitionTo(mDisconnectedState); 6676 } 6677 break; 6678 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6679 /** 6680 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 6681 * we have missed the network disconnection, transition to mDisconnectedState 6682 * and handle the rest of the events there 6683 */ 6684 deferMessage(message); 6685 handleNetworkDisconnect(); 6686 transitionTo(mDisconnectedState); 6687 break; 6688 default: 6689 return NOT_HANDLED; 6690 } 6691 return HANDLED; 6692 } 6693 6694 @Override 6695 public void exit() { 6696 mCurrentScanAlarmMs = 0; 6697 } 6698 } 6699 6700 class DisconnectedState extends State { 6701 @Override 6702 public void enter() { 6703 // We dont scan frequently if this is a temporary disconnect 6704 // due to p2p 6705 if (mTemporarilyDisconnectWifi) { 6706 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 6707 return; 6708 } 6709 6710 // Loose the last selection choice 6711 // mWifiAutoJoinController.setLastSelectedConfiguration 6712 // (WifiConfiguration.INVALID_NETWORK_ID); 6713 6714 mFrameworkScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 6715 Settings.Global.WIFI_FRAMEWORK_SCAN_INTERVAL_MS, 6716 mDefaultFrameworkScanIntervalMs); 6717 6718 if (mScreenOn) 6719 mCurrentScanAlarmMs = mDisconnectedScanPeriodMs; 6720 6721 if (PDBG) { 6722 loge(" Enter disconnected State scan interval " + mFrameworkScanIntervalMs 6723 + " mEnableBackgroundScan= " + mEnableBackgroundScan 6724 + " screenOn=" + mScreenOn); 6725 } 6726 6727 /** clear the roaming state, if we were roaming, we failed */ 6728 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 6729 6730 /** 6731 * - screen dark and PNO supported => scan alarm disabled 6732 * - everything else => scan alarm enabled with mDefaultFrameworkScanIntervalMs period 6733 */ 6734 if ((mScreenOn == false) && mEnableBackgroundScan) { //mEnableBackgroundScan) { 6735 /* If a regular scan result is pending, do not initiate background 6736 * scan until the scan results are returned. This is needed because 6737 * initiating a background scan will cancel the regular scan and 6738 * scan results will not be returned until background scanning is 6739 * cleared 6740 */ 6741 if (!mIsScanOngoing) { 6742 mWifiNative.enableBackgroundScan(true); 6743 } 6744 } else { 6745 setScanAlarm(true); 6746 } 6747 6748 if (mScreenOn && isScanAllowed()) { 6749 startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 6750 } 6751 6752 /** 6753 * If we have no networks saved, the supplicant stops doing the periodic scan. 6754 * The scans are useful to notify the user of the presence of an open network. 6755 * Note that these are not wake up scans. 6756 */ 6757 if (!mP2pConnected.get() && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 6758 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 6759 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 6760 } 6761 } 6762 @Override 6763 public boolean processMessage(Message message) { 6764 boolean ret = HANDLED; 6765 6766 logStateAndMessage(message, getClass().getSimpleName()); 6767 6768 switch (message.what) { 6769 case CMD_NO_NETWORKS_PERIODIC_SCAN: 6770 if (mP2pConnected.get()) break; 6771 if (message.arg1 == mPeriodicScanToken && 6772 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 6773 startScan(UNKNOWN_SCAN_SOURCE, null, null); 6774 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 6775 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 6776 } 6777 break; 6778 case WifiManager.FORGET_NETWORK: 6779 case CMD_REMOVE_NETWORK: 6780 // Set up a delayed message here. After the forget/remove is handled 6781 // the handled delayed message will determine if there is a need to 6782 // scan and continue 6783 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 6784 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 6785 ret = NOT_HANDLED; 6786 break; 6787 case CMD_SET_OPERATIONAL_MODE: 6788 if (message.arg1 != CONNECT_MODE) { 6789 mOperationalMode = message.arg1; 6790 6791 mWifiConfigStore.disableAllNetworks(); 6792 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6793 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 6794 setWifiState(WIFI_STATE_DISABLED); 6795 } 6796 6797 transitionTo(mScanModeState); 6798 } 6799 break; 6800 case CMD_ENABLE_BACKGROUND_SCAN: 6801 mEnableBackgroundScan = (message.arg1 == 1); 6802 loge("enableBackgroundScanCommand enabled=" + mEnableBackgroundScan 6803 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 6804 6805 if (mEnableBackgroundScan) { 6806 mWifiNative.enableBackgroundScan(true); 6807 setScanAlarm(false); 6808 } else { 6809 // Tell supplicant to disconnect so as it doesnt start scanning 6810 // for connection upon disabling background scan 6811 mWifiNative.disconnect(); 6812 6813 mWifiNative.enableBackgroundScan(false); 6814 setScanAlarm(true); 6815 } 6816 break; 6817 /* Ignore network disconnect */ 6818 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6819 break; 6820 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6821 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 6822 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 6823 /* ConnectModeState does the rest of the handling */ 6824 ret = NOT_HANDLED; 6825 break; 6826 case CMD_START_SCAN: 6827 if (!isScanAllowed()) { 6828 // Ignore the scan request 6829 return HANDLED; 6830 } 6831 /* Disable background scan temporarily during a regular scan */ 6832 if (mEnableBackgroundScan) { 6833 mWifiNative.enableBackgroundScan(false); 6834 } 6835 /* Handled in parent state */ 6836 ret = NOT_HANDLED; 6837 break; 6838 case WifiMonitor.SCAN_RESULTS_EVENT: 6839 /* Re-enable background scan when a pending scan result is received */ 6840 if (mEnableBackgroundScan && mIsScanOngoing) { 6841 mWifiNative.enableBackgroundScan(true); 6842 } 6843 /* Handled in parent state */ 6844 ret = NOT_HANDLED; 6845 break; 6846 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 6847 NetworkInfo info = (NetworkInfo) message.obj; 6848 mP2pConnected.set(info.isConnected()); 6849 if (mP2pConnected.get()) { 6850 int defaultInterval = mContext.getResources().getInteger( 6851 R.integer.config_wifi_scan_interval_p2p_connected); 6852 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 6853 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 6854 defaultInterval); 6855 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 6856 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 6857 if (DBG) log("Turn on scanning after p2p disconnected"); 6858 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 6859 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 6860 } 6861 case CMD_RECONNECT: 6862 case CMD_REASSOCIATE: 6863 if (mTemporarilyDisconnectWifi) { 6864 // Drop a third party reconnect/reassociate if STA is 6865 // temporarily disconnected for p2p 6866 break; 6867 } else { 6868 // ConnectModeState handles it 6869 ret = NOT_HANDLED; 6870 } 6871 break; 6872 default: 6873 ret = NOT_HANDLED; 6874 } 6875 return ret; 6876 } 6877 6878 @Override 6879 public void exit() { 6880 /* No need for a background scan upon exit from a disconnected state */ 6881 if (mEnableBackgroundScan) { 6882 mWifiNative.enableBackgroundScan(false); 6883 } 6884 mCurrentScanAlarmMs = 0; 6885 setScanAlarm(false); 6886 } 6887 } 6888 6889 class WpsRunningState extends State { 6890 // Tracks the source to provide a reply 6891 private Message mSourceMessage; 6892 @Override 6893 public void enter() { 6894 mSourceMessage = Message.obtain(getCurrentMessage()); 6895 } 6896 @Override 6897 public boolean processMessage(Message message) { 6898 logStateAndMessage(message, getClass().getSimpleName()); 6899 6900 switch (message.what) { 6901 case WifiMonitor.WPS_SUCCESS_EVENT: 6902 // Ignore intermediate success, wait for full connection 6903 break; 6904 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6905 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 6906 mSourceMessage.recycle(); 6907 mSourceMessage = null; 6908 deferMessage(message); 6909 transitionTo(mDisconnectedState); 6910 break; 6911 case WifiMonitor.WPS_OVERLAP_EVENT: 6912 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 6913 WifiManager.WPS_OVERLAP_ERROR); 6914 mSourceMessage.recycle(); 6915 mSourceMessage = null; 6916 transitionTo(mDisconnectedState); 6917 break; 6918 case WifiMonitor.WPS_FAIL_EVENT: 6919 // Arg1 has the reason for the failure 6920 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 6921 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 6922 mSourceMessage.recycle(); 6923 mSourceMessage = null; 6924 transitionTo(mDisconnectedState); 6925 } else { 6926 if (DBG) log("Ignore unspecified fail event during WPS connection"); 6927 } 6928 break; 6929 case WifiMonitor.WPS_TIMEOUT_EVENT: 6930 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 6931 WifiManager.WPS_TIMED_OUT); 6932 mSourceMessage.recycle(); 6933 mSourceMessage = null; 6934 transitionTo(mDisconnectedState); 6935 break; 6936 case WifiManager.START_WPS: 6937 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 6938 break; 6939 case WifiManager.CANCEL_WPS: 6940 if (mWifiNative.cancelWps()) { 6941 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 6942 } else { 6943 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 6944 } 6945 transitionTo(mDisconnectedState); 6946 break; 6947 /** 6948 * Defer all commands that can cause connections to a different network 6949 * or put the state machine out of connect mode 6950 */ 6951 case CMD_STOP_DRIVER: 6952 case CMD_SET_OPERATIONAL_MODE: 6953 case WifiManager.CONNECT_NETWORK: 6954 case CMD_ENABLE_NETWORK: 6955 case CMD_RECONNECT: 6956 case CMD_REASSOCIATE: 6957 deferMessage(message); 6958 break; 6959 case CMD_AUTO_CONNECT: 6960 case CMD_AUTO_ROAM: 6961 case CMD_START_SCAN: 6962 return HANDLED; 6963 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6964 if (DBG) log("Network connection lost"); 6965 handleNetworkDisconnect(); 6966 break; 6967 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 6968 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 6969 break; 6970 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 6971 // Disregard auth failure events during WPS connection. The 6972 // EAP sequence is retried several times, and there might be 6973 // failures (especially for wps pin). We will get a WPS_XXX 6974 // event at the end of the sequence anyway. 6975 if (DBG) log("Ignore auth failure during WPS connection"); 6976 break; 6977 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 6978 // Throw away supplicant state changes when WPS is running. 6979 // We will start getting supplicant state changes once we get 6980 // a WPS success or failure 6981 break; 6982 default: 6983 return NOT_HANDLED; 6984 } 6985 return HANDLED; 6986 } 6987 6988 @Override 6989 public void exit() { 6990 mWifiConfigStore.enableAllNetworks(); 6991 mWifiConfigStore.loadConfiguredNetworks(); 6992 } 6993 } 6994 6995 class SoftApStartingState extends State { 6996 @Override 6997 public void enter() { 6998 final Message message = getCurrentMessage(); 6999 if (message.what == CMD_START_AP) { 7000 final WifiConfiguration config = (WifiConfiguration) message.obj; 7001 7002 if (config == null) { 7003 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 7004 } else { 7005 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 7006 startSoftApWithConfig(config); 7007 } 7008 } else { 7009 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 7010 } 7011 } 7012 @Override 7013 public boolean processMessage(Message message) { 7014 logStateAndMessage(message, getClass().getSimpleName()); 7015 7016 switch(message.what) { 7017 case CMD_START_SUPPLICANT: 7018 case CMD_STOP_SUPPLICANT: 7019 case CMD_START_AP: 7020 case CMD_STOP_AP: 7021 case CMD_START_DRIVER: 7022 case CMD_STOP_DRIVER: 7023 case CMD_SET_OPERATIONAL_MODE: 7024 case CMD_SET_COUNTRY_CODE: 7025 case CMD_SET_FREQUENCY_BAND: 7026 case CMD_START_PACKET_FILTERING: 7027 case CMD_STOP_PACKET_FILTERING: 7028 case CMD_TETHER_STATE_CHANGE: 7029 deferMessage(message); 7030 break; 7031 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 7032 WifiConfiguration config = (WifiConfiguration) message.obj; 7033 if (config != null) { 7034 startSoftApWithConfig(config); 7035 } else { 7036 loge("Softap config is null!"); 7037 sendMessage(CMD_START_AP_FAILURE); 7038 } 7039 break; 7040 case CMD_START_AP_SUCCESS: 7041 setWifiApState(WIFI_AP_STATE_ENABLED); 7042 transitionTo(mSoftApStartedState); 7043 break; 7044 case CMD_START_AP_FAILURE: 7045 setWifiApState(WIFI_AP_STATE_FAILED); 7046 transitionTo(mInitialState); 7047 break; 7048 default: 7049 return NOT_HANDLED; 7050 } 7051 return HANDLED; 7052 } 7053 } 7054 7055 class SoftApStartedState extends State { 7056 @Override 7057 public boolean processMessage(Message message) { 7058 logStateAndMessage(message, getClass().getSimpleName()); 7059 7060 switch(message.what) { 7061 case CMD_STOP_AP: 7062 if (DBG) log("Stopping Soft AP"); 7063 /* We have not tethered at this point, so we just shutdown soft Ap */ 7064 try { 7065 mNwService.stopAccessPoint(mInterfaceName); 7066 } catch(Exception e) { 7067 loge("Exception in stopAccessPoint()"); 7068 } 7069 setWifiApState(WIFI_AP_STATE_DISABLED); 7070 transitionTo(mInitialState); 7071 break; 7072 case CMD_START_AP: 7073 // Ignore a start on a running access point 7074 break; 7075 // Fail client mode operation when soft AP is enabled 7076 case CMD_START_SUPPLICANT: 7077 loge("Cannot start supplicant with a running soft AP"); 7078 setWifiState(WIFI_STATE_UNKNOWN); 7079 break; 7080 case CMD_TETHER_STATE_CHANGE: 7081 TetherStateChange stateChange = (TetherStateChange) message.obj; 7082 if (startTethering(stateChange.available)) { 7083 transitionTo(mTetheringState); 7084 } 7085 break; 7086 default: 7087 return NOT_HANDLED; 7088 } 7089 return HANDLED; 7090 } 7091 } 7092 7093 class TetheringState extends State { 7094 @Override 7095 public void enter() { 7096 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 7097 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 7098 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 7099 } 7100 @Override 7101 public boolean processMessage(Message message) { 7102 logStateAndMessage(message, getClass().getSimpleName()); 7103 7104 switch(message.what) { 7105 case CMD_TETHER_STATE_CHANGE: 7106 TetherStateChange stateChange = (TetherStateChange) message.obj; 7107 if (isWifiTethered(stateChange.active)) { 7108 transitionTo(mTetheredState); 7109 } 7110 return HANDLED; 7111 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 7112 if (message.arg1 == mTetherToken) { 7113 loge("Failed to get tether update, shutdown soft access point"); 7114 transitionTo(mSoftApStartedState); 7115 // Needs to be first thing handled 7116 sendMessageAtFrontOfQueue(CMD_STOP_AP); 7117 } 7118 break; 7119 case CMD_START_SUPPLICANT: 7120 case CMD_STOP_SUPPLICANT: 7121 case CMD_START_AP: 7122 case CMD_STOP_AP: 7123 case CMD_START_DRIVER: 7124 case CMD_STOP_DRIVER: 7125 case CMD_SET_OPERATIONAL_MODE: 7126 case CMD_SET_COUNTRY_CODE: 7127 case CMD_SET_FREQUENCY_BAND: 7128 case CMD_START_PACKET_FILTERING: 7129 case CMD_STOP_PACKET_FILTERING: 7130 deferMessage(message); 7131 break; 7132 default: 7133 return NOT_HANDLED; 7134 } 7135 return HANDLED; 7136 } 7137 } 7138 7139 class TetheredState extends State { 7140 @Override 7141 public boolean processMessage(Message message) { 7142 logStateAndMessage(message, getClass().getSimpleName()); 7143 7144 switch(message.what) { 7145 case CMD_TETHER_STATE_CHANGE: 7146 TetherStateChange stateChange = (TetherStateChange) message.obj; 7147 if (!isWifiTethered(stateChange.active)) { 7148 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 7149 setHostApRunning(null, false); 7150 setHostApRunning(null, true); 7151 } 7152 return HANDLED; 7153 case CMD_STOP_AP: 7154 if (DBG) log("Untethering before stopping AP"); 7155 setWifiApState(WIFI_AP_STATE_DISABLING); 7156 stopTethering(); 7157 transitionTo(mUntetheringState); 7158 // More work to do after untethering 7159 deferMessage(message); 7160 break; 7161 default: 7162 return NOT_HANDLED; 7163 } 7164 return HANDLED; 7165 } 7166 } 7167 7168 class UntetheringState extends State { 7169 @Override 7170 public void enter() { 7171 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 7172 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 7173 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 7174 7175 } 7176 @Override 7177 public boolean processMessage(Message message) { 7178 logStateAndMessage(message, getClass().getSimpleName()); 7179 7180 switch(message.what) { 7181 case CMD_TETHER_STATE_CHANGE: 7182 TetherStateChange stateChange = (TetherStateChange) message.obj; 7183 7184 /* Wait till wifi is untethered */ 7185 if (isWifiTethered(stateChange.active)) break; 7186 7187 transitionTo(mSoftApStartedState); 7188 break; 7189 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 7190 if (message.arg1 == mTetherToken) { 7191 loge("Failed to get tether update, force stop access point"); 7192 transitionTo(mSoftApStartedState); 7193 } 7194 break; 7195 case CMD_START_SUPPLICANT: 7196 case CMD_STOP_SUPPLICANT: 7197 case CMD_START_AP: 7198 case CMD_STOP_AP: 7199 case CMD_START_DRIVER: 7200 case CMD_STOP_DRIVER: 7201 case CMD_SET_OPERATIONAL_MODE: 7202 case CMD_SET_COUNTRY_CODE: 7203 case CMD_SET_FREQUENCY_BAND: 7204 case CMD_START_PACKET_FILTERING: 7205 case CMD_STOP_PACKET_FILTERING: 7206 deferMessage(message); 7207 break; 7208 default: 7209 return NOT_HANDLED; 7210 } 7211 return HANDLED; 7212 } 7213 } 7214 7215 //State machine initiated requests can have replyTo set to null indicating 7216 //there are no recepients, we ignore those reply actions 7217 private void replyToMessage(Message msg, int what) { 7218 if (msg.replyTo == null) return; 7219 Message dstMsg = obtainMessageWithArg2(msg); 7220 dstMsg.what = what; 7221 mReplyChannel.replyToMessage(msg, dstMsg); 7222 } 7223 7224 private void replyToMessage(Message msg, int what, int arg1) { 7225 if (msg.replyTo == null) return; 7226 Message dstMsg = obtainMessageWithArg2(msg); 7227 dstMsg.what = what; 7228 dstMsg.arg1 = arg1; 7229 mReplyChannel.replyToMessage(msg, dstMsg); 7230 } 7231 7232 private void replyToMessage(Message msg, int what, Object obj) { 7233 if (msg.replyTo == null) return; 7234 Message dstMsg = obtainMessageWithArg2(msg); 7235 dstMsg.what = what; 7236 dstMsg.obj = obj; 7237 mReplyChannel.replyToMessage(msg, dstMsg); 7238 } 7239 7240 /** 7241 * arg2 on the source message has a unique id that needs to be retained in replies 7242 * to match the request 7243 7244 * see WifiManager for details 7245 */ 7246 private Message obtainMessageWithArg2(Message srcMsg) { 7247 Message msg = Message.obtain(); 7248 msg.arg2 = srcMsg.arg2; 7249 return msg; 7250 } 7251 7252 private static int parseHex(char ch) { 7253 if ('0' <= ch && ch <= '9') { 7254 return ch - '0'; 7255 } else if ('a' <= ch && ch <= 'f') { 7256 return ch - 'a' + 10; 7257 } else if ('A' <= ch && ch <= 'F') { 7258 return ch - 'A' + 10; 7259 } else { 7260 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 7261 } 7262 } 7263 7264 private byte[] parseHex(String hex) { 7265 /* This only works for good input; don't throw bad data at it */ 7266 if (hex == null) { 7267 return new byte[0]; 7268 } 7269 7270 if (hex.length() % 2 != 0) { 7271 throw new NumberFormatException(hex + " is not a valid hex string"); 7272 } 7273 7274 byte[] result = new byte[(hex.length())/2 + 1]; 7275 result[0] = (byte) ((hex.length())/2); 7276 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 7277 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 7278 byte b = (byte) (val & 0xFF); 7279 result[j] = b; 7280 } 7281 7282 return result; 7283 } 7284 7285 private static String makeHex(byte[] bytes) { 7286 StringBuilder sb = new StringBuilder(); 7287 for (byte b : bytes) { 7288 sb.append(String.format("%02x", b)); 7289 } 7290 return sb.toString(); 7291 } 7292 7293 private static String makeHex(byte[] bytes, int from, int len) { 7294 StringBuilder sb = new StringBuilder(); 7295 for (int i = 0; i < len; i++) { 7296 sb.append(String.format("%02x", bytes[from+i])); 7297 } 7298 return sb.toString(); 7299 } 7300 7301 7302 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 7303 7304 int len = array1.length + array2.length + array3.length; 7305 7306 if (array1.length != 0) { 7307 len++; /* add another byte for size */ 7308 } 7309 7310 if (array2.length != 0) { 7311 len++; /* add another byte for size */ 7312 } 7313 7314 if (array3.length != 0) { 7315 len++; /* add another byte for size */ 7316 } 7317 7318 byte[] result = new byte[len]; 7319 7320 int index = 0; 7321 if (array1.length != 0) { 7322 result[index] = (byte) (array1.length & 0xFF); 7323 index++; 7324 for (byte b : array1) { 7325 result[index] = b; 7326 index++; 7327 } 7328 } 7329 7330 if (array2.length != 0) { 7331 result[index] = (byte) (array2.length & 0xFF); 7332 index++; 7333 for (byte b : array2) { 7334 result[index] = b; 7335 index++; 7336 } 7337 } 7338 7339 if (array3.length != 0) { 7340 result[index] = (byte) (array3.length & 0xFF); 7341 index++; 7342 for (byte b : array3) { 7343 result[index] = b; 7344 index++; 7345 } 7346 } 7347 return result; 7348 } 7349 7350 void handleGsmAuthRequest(SimAuthRequestData requestData) { 7351 if (targetWificonfiguration == null 7352 || targetWificonfiguration.networkId == requestData.networkId) { 7353 logd("id matches targetWifiConfiguration"); 7354 } else { 7355 logd("id does not match targetWifiConfiguration"); 7356 return; 7357 } 7358 7359 TelephonyManager tm = (TelephonyManager) 7360 mContext.getSystemService(Context.TELEPHONY_SERVICE); 7361 7362 if (tm != null) { 7363 StringBuilder sb = new StringBuilder(); 7364 for (String challenge : requestData.challenges) { 7365 7366 logd("RAND = " + challenge); 7367 7368 byte[] rand = null; 7369 try { 7370 rand = parseHex(challenge); 7371 } catch (NumberFormatException e) { 7372 loge("malformed challenge"); 7373 continue; 7374 } 7375 7376 String base64Challenge = android.util.Base64.encodeToString( 7377 rand, android.util.Base64.NO_WRAP); 7378 /* 7379 * appType = 1 => SIM, 2 => USIM according to 7380 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 7381 */ 7382 int appType = 2; 7383 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 7384 logv("Raw Response - " + tmResponse); 7385 7386 if (tmResponse != null && tmResponse.length() > 4) { 7387 byte[] result = android.util.Base64.decode(tmResponse, 7388 android.util.Base64.DEFAULT); 7389 logv("Hex Response -" + makeHex(result)); 7390 int sres_len = result[0]; 7391 String sres = makeHex(result, 1, sres_len); 7392 int kc_offset = 1+sres_len; 7393 int kc_len = result[kc_offset]; 7394 String kc = makeHex(result, 1+kc_offset, kc_len); 7395 sb.append(":" + kc + ":" + sres); 7396 logv("kc:" + kc + " sres:" + sres); 7397 } else { 7398 loge("bad response - " + tmResponse); 7399 } 7400 } 7401 7402 String response = sb.toString(); 7403 logv("Supplicant Response -" + response); 7404 mWifiNative.simAuthResponse(requestData.networkId, response); 7405 } else { 7406 loge("could not get telephony manager"); 7407 } 7408 } 7409 7410 void handle3GAuthRequest(SimAuthRequestData requestData) { 7411 7412 } 7413} 7414