WifiStateMachine.java revision e0ba94ba9abde13173ae0de8c8939aa4eb9a9085
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 VVDBG = false; 126 private static boolean mLogMessages = false; 127 128 private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; 129 130 private static final String GOOGLE_OUI = "DA-A1-19"; 131 132 /* temporary debug flag - best network selection development */ 133 private static boolean PDBG = false; 134 135 /* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting 136 * the corresponding BSSID. 137 */ 138 private boolean didBlackListBSSID = false; 139 140 /** 141 * Log with error attribute 142 * 143 * @param s is string log 144 */ 145 protected void loge(String s) { 146 Log.e(getName(), s); 147 } 148 protected void log(String s) {; 149 Log.e(getName(), s); 150 } 151 152 private WifiMonitor mWifiMonitor; 153 private WifiNative mWifiNative; 154 private WifiConfigStore mWifiConfigStore; 155 private WifiAutoJoinController mWifiAutoJoinController; 156 private INetworkManagementService mNwService; 157 private ConnectivityManager mCm; 158 159 private final boolean mP2pSupported; 160 private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); 161 private boolean mTemporarilyDisconnectWifi = false; 162 private final String mPrimaryDeviceType; 163 164 /* Scan results handling */ 165 private List<ScanResult> mScanResults = new ArrayList<ScanResult>(); 166 private static final Pattern scanResultPattern = Pattern.compile("\t+"); 167 private static final int SCAN_RESULT_CACHE_SIZE = 160; 168 private final LruCache<String, ScanResult> mScanResultCache; 169 // For debug, number of known scan results that were found as part of last scan result event, 170 // as well the number of scans results returned by the supplicant with that message 171 private int mNumScanResultsKnown; 172 private int mNumScanResultsReturned; 173 174 /* Batch scan results */ 175 private final List<BatchedScanResult> mBatchedScanResults = 176 new ArrayList<BatchedScanResult>(); 177 private int mBatchedScanOwnerUid = UNKNOWN_SCAN_SOURCE; 178 private int mExpectedBatchedScans = 0; 179 private long mBatchedScanMinPollTime = 0; 180 181 private boolean mScreenOn = false; 182 183 /* Chipset supports background scan */ 184 private final boolean mBackgroundScanSupported; 185 186 private String mInterfaceName; 187 /* Tethering interface could be separate from wlan interface */ 188 private String mTetherInterfaceName; 189 190 private int mLastSignalLevel = -1; 191 private String mLastBssid; 192 private int mLastNetworkId; // The network Id we successfully joined 193 private boolean linkDebouncing = false; 194 195 // Testing various network disconnect cases by sending lots of spurious 196 // disconnect to supplicant 197 private boolean testNetworkDisconnect = false; 198 199 private boolean mEnableRssiPolling = false; 200 private boolean mEnableBackgroundScan = false; 201 private int mRssiPollToken = 0; 202 /* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE 203 * In CONNECT_MODE, the STA can scan and connect to an access point 204 * In SCAN_ONLY_MODE, the STA can only scan for access points 205 * In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off 206 */ 207 private int mOperationalMode = CONNECT_MODE; 208 private boolean mIsScanOngoing = false; 209 private boolean mIsFullScanOngoing = false; 210 private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); 211 private WorkSource mScanWorkSource = null; 212 private static final int UNKNOWN_SCAN_SOURCE = -1; 213 private static final int SCAN_ALARM_SOURCE = -2; 214 private static final int ADD_OR_UPDATE_SOURCE = -3; 215 216 private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; 217 private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; 218 private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; 219 private static final String SCAN_REQUEST_TIME = "scan_request_time"; 220 221 private static final String BATCHED_SETTING = "batched_settings"; 222 private static final String BATCHED_WORKSOURCE = "batched_worksource"; 223 224 /* Tracks if state machine has received any screen state change broadcast yet. 225 * We can miss one of these at boot. 226 */ 227 private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); 228 229 private boolean mBluetoothConnectionActive = false; 230 231 private PowerManager.WakeLock mSuspendWakeLock; 232 233 /** 234 * Interval in milliseconds between polling for RSSI 235 * and linkspeed information 236 */ 237 private static final int POLL_RSSI_INTERVAL_MSECS = 3000; 238 239 /** 240 * Interval in milliseconds between receiving a disconnect event 241 * while connected to a good AP, and handling the disconnect proper 242 */ 243 private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 7000; 244 245 /** 246 * Delay between supplicant restarts upon failure to establish connection 247 */ 248 private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000; 249 250 /** 251 * Number of times we attempt to restart supplicant 252 */ 253 private static final int SUPPLICANT_RESTART_TRIES = 5; 254 255 private int mSupplicantRestartCount = 0; 256 /* Tracks sequence number on stop failure message */ 257 private int mSupplicantStopFailureToken = 0; 258 259 /** 260 * Tether state change notification time out 261 */ 262 private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; 263 264 /* Tracks sequence number on a tether notification time out */ 265 private int mTetherToken = 0; 266 267 /** 268 * Driver start time out. 269 */ 270 private static final int DRIVER_START_TIME_OUT_MSECS = 10000; 271 272 /* Tracks sequence number on a driver time out */ 273 private int mDriverStartToken = 0; 274 275 /** 276 * The link properties of the wifi interface. 277 * Do not modify this directly; use updateLinkProperties instead. 278 */ 279 private LinkProperties mLinkProperties; 280 281 /* Tracks sequence number on a periodic scan message */ 282 private int mPeriodicScanToken = 0; 283 284 // Wakelock held during wifi start/stop and driver load/unload 285 private PowerManager.WakeLock mWakeLock; 286 287 private Context mContext; 288 289 private final Object mDhcpResultsLock = new Object(); 290 private DhcpResults mDhcpResults; 291 private WifiInfo mWifiInfo; 292 private NetworkInfo mNetworkInfo; 293 private NetworkCapabilities mNetworkCapabilities; 294 private SupplicantStateTracker mSupplicantStateTracker; 295 private DhcpStateMachine mDhcpStateMachine; 296 private boolean mDhcpActive = false; 297 298 private int mWifiLinkLayerStatsSupported = 4; // Temporary disable 299 300 private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); 301 302 // Whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress 303 private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 304 305 // Roaming failure count 306 private int mRoamFailCount = 0; 307 308 // This is the BSSID we are trying to associate to, it can be set to "any" 309 // if we havent selected a BSSID for joining. 310 // The BSSID we are associated to is found in mWifiInfo 311 private String mTargetRoamBSSID = "any"; 312 313 private WifiConfiguration targetWificonfiguration = null; 314 315 // Used as debug to indicate which configuration last was saved 316 private WifiConfiguration lastSavedConfigurationAttempt = null; 317 318 // Used as debug to indicate which configuration last was removed 319 private WifiConfiguration lastForgetConfigurationAttempt = null; 320 321 boolean isRoaming() { 322 return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING 323 || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; 324 } 325 326 public void autoRoamSetBSSID(int netId, String bssid) { 327 autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); 328 } 329 330 public boolean autoRoamSetBSSID(WifiConfiguration config, String bssid) { 331 boolean ret = true; 332 if (mTargetRoamBSSID == null) mTargetRoamBSSID = "any"; 333 if (bssid == null) bssid = "any"; 334 if (config == null) return false; // Nothing to do 335 336 if (mTargetRoamBSSID != null && bssid == mTargetRoamBSSID && bssid == config.BSSID) { 337 return false; // We didnt change anything 338 } 339 if (!mTargetRoamBSSID.equals("any") && bssid.equals("any")) { 340 // Changing to ANY 341 if (!mWifiConfigStore.roamOnAny) { 342 ret = false; // Nothing to do 343 } 344 } 345 if (VDBG) { 346 loge("autoRoamSetBSSID " + bssid 347 + " key=" + config.configKey()); 348 } 349 config.autoJoinBSSID = bssid; 350 mTargetRoamBSSID = bssid; 351 mWifiConfigStore.saveWifiConfigBSSID(config); 352 return ret; 353 } 354 355 /** 356 * Subset of link properties coming from netlink. 357 * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers 358 * and domains obtained from router advertisements (RFC 6106). 359 */ 360 private NetlinkTracker mNetlinkTracker; 361 362 private AlarmManager mAlarmManager; 363 private PendingIntent mScanIntent; 364 private PendingIntent mDriverStopIntent; 365 private PendingIntent mBatchedScanIntervalIntent; 366 367 /* Tracks current frequency mode */ 368 private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); 369 370 /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ 371 private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); 372 373 // Channel for sending replies. 374 private AsyncChannel mReplyChannel = new AsyncChannel(); 375 376 private WifiP2pServiceImpl mWifiP2pServiceImpl; 377 378 // Used to initiate a connection with WifiP2pService 379 private AsyncChannel mWifiP2pChannel; 380 private AsyncChannel mWifiApConfigChannel; 381 382 private WifiNetworkFactory mNetworkFactory; 383 private WifiNetworkAgent mNetworkAgent; 384 385 // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi 386 // We should really persist that into the networkHistory.txt file, and read it back when 387 // WifiStateMachine starts up 388 private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); 389 390 // Used to filter out requests we couldn't possibly satisfy. 391 private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); 392 393 /* The base for wifi message types */ 394 static final int BASE = Protocol.BASE_WIFI; 395 /* Start the supplicant */ 396 static final int CMD_START_SUPPLICANT = BASE + 11; 397 /* Stop the supplicant */ 398 static final int CMD_STOP_SUPPLICANT = BASE + 12; 399 /* Start the driver */ 400 static final int CMD_START_DRIVER = BASE + 13; 401 /* Stop the driver */ 402 static final int CMD_STOP_DRIVER = BASE + 14; 403 /* Indicates Static IP succeeded */ 404 static final int CMD_STATIC_IP_SUCCESS = BASE + 15; 405 /* Indicates Static IP failed */ 406 static final int CMD_STATIC_IP_FAILURE = BASE + 16; 407 /* Indicates supplicant stop failed */ 408 static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; 409 /* Delayed stop to avoid shutting down driver too quick*/ 410 static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; 411 /* A delayed message sent to start driver when it fail to come up */ 412 static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19; 413 414 /* Start the soft access point */ 415 static final int CMD_START_AP = BASE + 21; 416 /* Indicates soft ap start succeeded */ 417 static final int CMD_START_AP_SUCCESS = BASE + 22; 418 /* Indicates soft ap start failed */ 419 static final int CMD_START_AP_FAILURE = BASE + 23; 420 /* Stop the soft access point */ 421 static final int CMD_STOP_AP = BASE + 24; 422 /* Set the soft access point configuration */ 423 static final int CMD_SET_AP_CONFIG = BASE + 25; 424 /* Soft access point configuration set completed */ 425 static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; 426 /* Request the soft access point configuration */ 427 static final int CMD_REQUEST_AP_CONFIG = BASE + 27; 428 /* Response to access point configuration request */ 429 static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; 430 /* Invoked when getting a tether state change notification */ 431 static final int CMD_TETHER_STATE_CHANGE = BASE + 29; 432 /* A delayed message sent to indicate tether state change failed to arrive */ 433 static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; 434 435 static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; 436 437 /* Supplicant commands */ 438 /* Is supplicant alive ? */ 439 static final int CMD_PING_SUPPLICANT = BASE + 51; 440 /* Add/update a network configuration */ 441 static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52; 442 /* Delete a network */ 443 static final int CMD_REMOVE_NETWORK = BASE + 53; 444 /* Enable a network. The device will attempt a connection to the given network. */ 445 static final int CMD_ENABLE_NETWORK = BASE + 54; 446 /* Enable all networks */ 447 static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; 448 /* Blacklist network. De-prioritizes the given BSSID for connection. */ 449 static final int CMD_BLACKLIST_NETWORK = BASE + 56; 450 /* Clear the blacklist network list */ 451 static final int CMD_CLEAR_BLACKLIST = BASE + 57; 452 /* Save configuration */ 453 static final int CMD_SAVE_CONFIG = BASE + 58; 454 /* Get configured networks */ 455 static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; 456 /* Get available frequencies */ 457 static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; 458 /* Get adaptors */ 459 static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61; 460 /* Get configured networks with real preSharedKey */ 461 static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; 462 /* Get Link Layer Stats thru HAL */ 463 static final int CMD_GET_LINK_LAYER_STATS = BASE + 63; 464 /* Supplicant commands after driver start*/ 465 /* Initiate a scan */ 466 static final int CMD_START_SCAN = BASE + 71; 467 /* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */ 468 static final int CMD_SET_OPERATIONAL_MODE = BASE + 72; 469 /* Disconnect from a network */ 470 static final int CMD_DISCONNECT = BASE + 73; 471 /* Reconnect to a network */ 472 static final int CMD_RECONNECT = BASE + 74; 473 /* Reassociate to a network */ 474 static final int CMD_REASSOCIATE = BASE + 75; 475 /* Get Connection Statistis */ 476 static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; 477 478 /* Controls suspend mode optimizations 479 * 480 * When high perf mode is enabled, suspend mode optimizations are disabled 481 * 482 * When high perf mode is disabled, suspend mode optimizations are enabled 483 * 484 * Suspend mode optimizations include: 485 * - packet filtering 486 * - turn off roaming 487 * - DTIM wake up settings 488 */ 489 static final int CMD_SET_HIGH_PERF_MODE = BASE + 77; 490 /* Set the country code */ 491 static final int CMD_SET_COUNTRY_CODE = BASE + 80; 492 /* Enables RSSI poll */ 493 static final int CMD_ENABLE_RSSI_POLL = BASE + 82; 494 /* RSSI poll */ 495 static final int CMD_RSSI_POLL = BASE + 83; 496 /* Set up packet filtering */ 497 static final int CMD_START_PACKET_FILTERING = BASE + 84; 498 /* Clear packet filter */ 499 static final int CMD_STOP_PACKET_FILTERING = BASE + 85; 500 /* Enable suspend mode optimizations in the driver */ 501 static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; 502 /* Delayed NETWORK_DISCONNECT */ 503 static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; 504 /* When there are no saved networks, we do a periodic scan to notify user of 505 * an open network */ 506 static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; 507 /* Test network Disconnection NETWORK_DISCONNECT */ 508 static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; 509 private int testNetworkDisconnectCounter = 0; 510 511 /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ 512 static final int MULTICAST_V6 = 1; 513 static final int MULTICAST_V4 = 0; 514 515 /* Set the frequency band */ 516 static final int CMD_SET_FREQUENCY_BAND = BASE + 90; 517 /* Enable TDLS on a specific MAC address */ 518 static final int CMD_ENABLE_TDLS = BASE + 92; 519 /* DHCP/IP configuration watchdog */ 520 static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; 521 522 /** 523 * Make this timer 40 seconds, which is about the normal DHCP timeout. 524 * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress 525 * for more than 30 seconds. 526 */ 527 static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 40000; 528 529 int obtainingIpWatchdogCount = 0; 530 531 /* Commands from/to the SupplicantStateTracker */ 532 /* Reset the supplicant state tracker */ 533 static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; 534 535 536 /** 537 * Watchdog for protecting against b/16823537 538 * Leave time for 4-ways handshake to succeed 539 */ 540 static final int ROAM_GUARD_TIMER_MSEC = 15000; 541 542 int roamWatchdogCount = 0; 543 /* Roam state watchdog */ 544 static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; 545 /* Screen change intent handling */ 546 static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; 547 548 int disconnectingWatchdogCount = 0; 549 static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000; 550 551 /* Disconnecting state watchdog */ 552 static final int CMD_DISCONNECTING_WATCHDOG_TIMER = BASE + 96; 553 554 /* P2p commands */ 555 /* We are ok with no response here since we wont do much with it anyway */ 556 public static final int CMD_ENABLE_P2P = BASE + 131; 557 /* In order to shut down supplicant cleanly, we wait till p2p has 558 * been disabled */ 559 public static final int CMD_DISABLE_P2P_REQ = BASE + 132; 560 public static final int CMD_DISABLE_P2P_RSP = BASE + 133; 561 562 public static final int CMD_BOOT_COMPLETED = BASE + 134; 563 564 /* change the batch scan settings. 565 * arg1 = responsible UID 566 * arg2 = csph (channel scans per hour) 567 * obj = bundle with the new settings and the optional worksource 568 */ 569 public static final int CMD_SET_BATCHED_SCAN = BASE + 135; 570 public static final int CMD_START_NEXT_BATCHED_SCAN = BASE + 136; 571 public static final int CMD_POLL_BATCHED_SCAN = BASE + 137; 572 573 /* We now have a valid IP configuration. */ 574 static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; 575 /* We no longer have a valid IP configuration. */ 576 static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; 577 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 578 static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; 579 580 /* Supplicant is trying to associate to a given BSSID */ 581 static final int CMD_TARGET_BSSID = BASE + 141; 582 583 /* Reload all networks and reconnect */ 584 static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; 585 586 static final int CMD_AUTO_CONNECT = BASE + 143; 587 588 static final int network_status_unwanted_disconnect = 0; 589 static final int network_status_unwanted_disable_autojoin = 1; 590 591 static final int CMD_UNWANTED_NETWORK = BASE + 144; 592 593 static final int CMD_AUTO_ROAM = BASE + 145; 594 595 static final int CMD_AUTO_SAVE_NETWORK = BASE + 146; 596 597 static final int CMD_ASSOCIATED_BSSID = BASE + 147; 598 599 /* Wifi state machine modes of operation */ 600 /* CONNECT_MODE - connect to any 'known' AP when it becomes available */ 601 public static final int CONNECT_MODE = 1; 602 /* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */ 603 public static final int SCAN_ONLY_MODE = 2; 604 /* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */ 605 public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3; 606 607 private static final int SUCCESS = 1; 608 private static final int FAILURE = -1; 609 610 /* Tracks if suspend optimizations need to be disabled by DHCP, 611 * screen or due to high perf mode. 612 * When any of them needs to disable it, we keep the suspend optimizations 613 * disabled 614 */ 615 private int mSuspendOptNeedsDisabled = 0; 616 617 private static final int SUSPEND_DUE_TO_DHCP = 1; 618 private static final int SUSPEND_DUE_TO_HIGH_PERF = 1<<1; 619 private static final int SUSPEND_DUE_TO_SCREEN = 1<<2; 620 621 /* Tracks if user has enabled suspend optimizations through settings */ 622 private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); 623 624 /** 625 * Default framework scan interval in milliseconds. This is used in the scenario in which 626 * wifi chipset does not support background scanning to set up a 627 * periodic wake up scan so that the device can connect to a new access 628 * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can 629 * override this. 630 */ 631 private final int mDefaultFrameworkScanIntervalMs; 632 633 private int mDisconnectedScanPeriodMs = 10000; 634 635 /** 636 * Supplicant scan interval in milliseconds. 637 * Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or 638 * from the default config if the setting is not set 639 */ 640 private long mSupplicantScanIntervalMs; 641 642 /** 643 * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit 644 */ 645 private long lastFullBandConnectedTimeMilli; 646 647 /** 648 * time interval to the next full band scan we will perform for 649 * autojoin while connected with screen lit 650 */ 651 private long fullBandConnectedTimeIntervalMilli; 652 653 /** 654 * max time interval to the next full band scan we will perform for 655 * autojoin while connected with screen lit 656 * Max time is 5 minutes 657 */ 658 private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; 659 660 /** 661 * Minimum time interval between enabling all networks. 662 * A device can end up repeatedly connecting to a bad network on screen on/off toggle 663 * due to enabling every time. We add a threshold to avoid this. 664 */ 665 private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ 666 private long mLastEnableAllNetworksTime; 667 668 /** 669 * Starting and shutting down driver too quick causes problems leading to driver 670 * being in a bad state. Delay driver stop. 671 */ 672 private final int mDriverStopDelayMs; 673 private int mDelayedStopCounter; 674 private boolean mInDelayedStop = false; 675 676 // sometimes telephony gives us this data before boot is complete and we can't store it 677 // until after, so the write is deferred 678 private volatile String mPersistedCountryCode; 679 680 // Supplicant doesn't like setting the same country code multiple times (it may drop 681 // currently connected network), so we save the country code here to avoid redundency 682 private String mLastSetCountryCode; 683 684 /* Default parent state */ 685 private State mDefaultState = new DefaultState(); 686 /* Temporary initial state */ 687 private State mInitialState = new InitialState(); 688 /* Driver loaded, waiting for supplicant to start */ 689 private State mSupplicantStartingState = new SupplicantStartingState(); 690 /* Driver loaded and supplicant ready */ 691 private State mSupplicantStartedState = new SupplicantStartedState(); 692 /* Waiting for supplicant to stop and monitor to exit */ 693 private State mSupplicantStoppingState = new SupplicantStoppingState(); 694 /* Driver start issued, waiting for completed event */ 695 private State mDriverStartingState = new DriverStartingState(); 696 /* Driver started */ 697 private State mDriverStartedState = new DriverStartedState(); 698 /* Wait until p2p is disabled 699 * This is a special state which is entered right after we exit out of DriverStartedState 700 * before transitioning to another state. 701 */ 702 private State mWaitForP2pDisableState = new WaitForP2pDisableState(); 703 /* Driver stopping */ 704 private State mDriverStoppingState = new DriverStoppingState(); 705 /* Driver stopped */ 706 private State mDriverStoppedState = new DriverStoppedState(); 707 /* Scan for networks, no connection will be established */ 708 private State mScanModeState = new ScanModeState(); 709 /* Connecting to an access point */ 710 private State mConnectModeState = new ConnectModeState(); 711 /* Connected at 802.11 (L2) level */ 712 private State mL2ConnectedState = new L2ConnectedState(); 713 /* fetching IP after connection to access point (assoc+auth complete) */ 714 private State mObtainingIpState = new ObtainingIpState(); 715 /* Waiting for link quality verification to be complete */ 716 private State mVerifyingLinkState = new VerifyingLinkState(); 717 /* Connected with IP addr */ 718 private State mConnectedState = new ConnectedState(); 719 /* Roaming */ 720 private State mRoamingState = new RoamingState(); 721 /* disconnect issued, waiting for network disconnect confirmation */ 722 private State mDisconnectingState = new DisconnectingState(); 723 /* Network is not connected, supplicant assoc+auth is not complete */ 724 private State mDisconnectedState = new DisconnectedState(); 725 /* Waiting for WPS to be completed*/ 726 private State mWpsRunningState = new WpsRunningState(); 727 728 /* Soft ap is starting up */ 729 private State mSoftApStartingState = new SoftApStartingState(); 730 /* Soft ap is running */ 731 private State mSoftApStartedState = new SoftApStartedState(); 732 /* Soft ap is running and we are waiting for tether notification */ 733 private State mTetheringState = new TetheringState(); 734 /* Soft ap is running and we are tethered through connectivity service */ 735 private State mTetheredState = new TetheredState(); 736 /* Waiting for untether confirmation before stopping soft Ap */ 737 private State mUntetheringState = new UntetheringState(); 738 739 private class TetherStateChange { 740 ArrayList<String> available; 741 ArrayList<String> active; 742 TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { 743 available = av; 744 active = ac; 745 } 746 } 747 748 public static class SimAuthRequestData { 749 int networkId; 750 int protocol; 751 String ssid; 752 String[] challenges; 753 } 754 755 public static class SimAuthResponseData { 756 int id; 757 String Kc1; 758 String SRES1; 759 String Kc2; 760 String SRES2; 761 String Kc3; 762 String SRES3; 763 } 764 765 /** 766 * One of {@link WifiManager#WIFI_STATE_DISABLED}, 767 * {@link WifiManager#WIFI_STATE_DISABLING}, 768 * {@link WifiManager#WIFI_STATE_ENABLED}, 769 * {@link WifiManager#WIFI_STATE_ENABLING}, 770 * {@link WifiManager#WIFI_STATE_UNKNOWN} 771 * 772 */ 773 private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED); 774 775 /** 776 * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, 777 * {@link WifiManager#WIFI_AP_STATE_DISABLING}, 778 * {@link WifiManager#WIFI_AP_STATE_ENABLED}, 779 * {@link WifiManager#WIFI_AP_STATE_ENABLING}, 780 * {@link WifiManager#WIFI_AP_STATE_FAILED} 781 * 782 */ 783 private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); 784 785 private static final int SCAN_REQUEST = 0; 786 private static final String ACTION_START_SCAN = 787 "com.android.server.WifiManager.action.START_SCAN"; 788 789 private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; 790 private static final int DRIVER_STOP_REQUEST = 0; 791 private static final String ACTION_DELAYED_DRIVER_STOP = 792 "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; 793 794 private static final String ACTION_REFRESH_BATCHED_SCAN = 795 "com.android.server.WifiManager.action.REFRESH_BATCHED_SCAN"; 796 /** 797 * Keep track of whether WIFI is running. 798 */ 799 private boolean mIsRunning = false; 800 801 /** 802 * Keep track of whether we last told the battery stats we had started. 803 */ 804 private boolean mReportedRunning = false; 805 806 /** 807 * Most recently set source of starting WIFI. 808 */ 809 private final WorkSource mRunningWifiUids = new WorkSource(); 810 811 /** 812 * The last reported UIDs that were responsible for starting WIFI. 813 */ 814 private final WorkSource mLastRunningWifiUids = new WorkSource(); 815 816 private final IBatteryStats mBatteryStats; 817 818 private BatchedScanSettings mBatchedScanSettings = null; 819 820 /** 821 * Track the worksource/cost of the current settings and track what's been noted 822 * to the battery stats, so we can mark the end of the previous when changing. 823 */ 824 private WorkSource mBatchedScanWorkSource = null; 825 private int mBatchedScanCsph = 0; 826 private WorkSource mNotedBatchedScanWorkSource = null; 827 private int mNotedBatchedScanCsph = 0; 828 829 private String mTcpBufferSizes = null; 830 831 // Used for debug and stats gathering 832 private static int sScanAlarmIntentCount = 0; 833 834 public WifiStateMachine(Context context, String wlanInterface, 835 WifiTrafficPoller trafficPoller){ 836 super("WifiStateMachine"); 837 mContext = context; 838 mInterfaceName = wlanInterface; 839 mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); 840 mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( 841 BatteryStats.SERVICE_NAME)); 842 843 IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); 844 mNwService = INetworkManagementService.Stub.asInterface(b); 845 846 mP2pSupported = mContext.getPackageManager().hasSystemFeature( 847 PackageManager.FEATURE_WIFI_DIRECT); 848 849 mWifiNative = new WifiNative(mInterfaceName); 850 mWifiConfigStore = new WifiConfigStore(context, mWifiNative); 851 mWifiAutoJoinController = new WifiAutoJoinController(context, this, 852 mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); 853 mWifiMonitor = new WifiMonitor(this, mWifiNative); 854 mWifiInfo = new WifiInfo(); 855 mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, 856 getHandler()); 857 mLinkProperties = new LinkProperties(); 858 859 IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); 860 mWifiP2pServiceImpl = (WifiP2pServiceImpl)IWifiP2pManager.Stub.asInterface(s1); 861 862 mNetworkInfo.setIsAvailable(false); 863 mLastBssid = null; 864 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 865 mLastSignalLevel = -1; 866 867 mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { 868 public void update() { 869 sendMessage(CMD_UPDATE_LINKPROPERTIES); 870 } 871 }); 872 try { 873 mNwService.registerObserver(mNetlinkTracker); 874 } catch (RemoteException e) { 875 loge("Couldn't register netlink tracker: " + e.toString()); 876 } 877 878 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 879 Intent scanIntent = new Intent(ACTION_START_SCAN, null); 880 mScanIntent = PendingIntent.getBroadcast(mContext, SCAN_REQUEST, scanIntent, 0); 881 882 Intent batchedIntent = new Intent(ACTION_REFRESH_BATCHED_SCAN, null); 883 mBatchedScanIntervalIntent = PendingIntent.getBroadcast(mContext, 0, batchedIntent, 0); 884 885 mDefaultFrameworkScanIntervalMs = mContext.getResources().getInteger( 886 R.integer.config_wifi_framework_scan_interval); 887 888 mDriverStopDelayMs = mContext.getResources().getInteger( 889 R.integer.config_wifi_driver_stop_delay); 890 891 mBackgroundScanSupported = mContext.getResources().getBoolean( 892 R.bool.config_wifi_background_scan_support); 893 894 mPrimaryDeviceType = mContext.getResources().getString( 895 R.string.config_wifi_p2p_device_type); 896 897 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 898 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 899 900 mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); 901 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 902 mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 903 mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); 904 mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); 905 // TODO - needs to be a bit more dynamic 906 mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); 907 908 mContext.registerReceiver( 909 new BroadcastReceiver() { 910 @Override 911 public void onReceive(Context context, Intent intent) { 912 ArrayList<String> available = intent.getStringArrayListExtra( 913 ConnectivityManager.EXTRA_AVAILABLE_TETHER); 914 ArrayList<String> active = intent.getStringArrayListExtra( 915 ConnectivityManager.EXTRA_ACTIVE_TETHER); 916 sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); 917 } 918 },new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); 919 920 mContext.registerReceiver( 921 new BroadcastReceiver() { 922 @Override 923 public void onReceive(Context context, Intent intent) { 924 sScanAlarmIntentCount++; 925 startScan(SCAN_ALARM_SOURCE, -2, null, null); 926 if (VDBG) 927 loge("WiFiStateMachine SCAN ALARM"); 928 } 929 }, 930 new IntentFilter(ACTION_START_SCAN)); 931 932 IntentFilter filter = new IntentFilter(); 933 filter.addAction(Intent.ACTION_SCREEN_ON); 934 filter.addAction(Intent.ACTION_SCREEN_OFF); 935 filter.addAction(ACTION_REFRESH_BATCHED_SCAN); 936 mContext.registerReceiver( 937 new BroadcastReceiver() { 938 @Override 939 public void onReceive(Context context, Intent intent) { 940 String action = intent.getAction(); 941 942 if (action.equals(Intent.ACTION_SCREEN_ON)) { 943 sendMessage(CMD_SCREEN_STATE_CHANGED, 1); 944 } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { 945 sendMessage(CMD_SCREEN_STATE_CHANGED, 0); 946 } else if (action.equals(ACTION_REFRESH_BATCHED_SCAN)) { 947 startNextBatchedScanAsync(); 948 } 949 } 950 }, filter); 951 952 mContext.registerReceiver( 953 new BroadcastReceiver() { 954 @Override 955 public void onReceive(Context context, Intent intent) { 956 int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); 957 sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); 958 } 959 }, 960 new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); 961 962 mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( 963 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, 964 new ContentObserver(getHandler()) { 965 @Override 966 public void onChange(boolean selfChange) { 967 mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), 968 Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); 969 } 970 }); 971 972 mContext.registerReceiver( 973 new BroadcastReceiver() { 974 @Override 975 public void onReceive(Context context, Intent intent) { 976 sendMessage(CMD_BOOT_COMPLETED); 977 } 978 }, 979 new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); 980 981 mScanResultCache = new LruCache<String, ScanResult>(SCAN_RESULT_CACHE_SIZE); 982 983 PowerManager powerManager = (PowerManager)mContext.getSystemService(Context.POWER_SERVICE); 984 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName()); 985 986 mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); 987 mSuspendWakeLock.setReferenceCounted(false); 988 989 mTcpBufferSizes = mContext.getResources().getString( 990 com.android.internal.R.string.config_wifi_tcp_buffers); 991 992 addState(mDefaultState); 993 addState(mInitialState, mDefaultState); 994 addState(mSupplicantStartingState, mDefaultState); 995 addState(mSupplicantStartedState, mDefaultState); 996 addState(mDriverStartingState, mSupplicantStartedState); 997 addState(mDriverStartedState, mSupplicantStartedState); 998 addState(mScanModeState, mDriverStartedState); 999 addState(mConnectModeState, mDriverStartedState); 1000 addState(mL2ConnectedState, mConnectModeState); 1001 addState(mObtainingIpState, mL2ConnectedState); 1002 addState(mVerifyingLinkState, mL2ConnectedState); 1003 addState(mConnectedState, mL2ConnectedState); 1004 addState(mRoamingState, mL2ConnectedState); 1005 addState(mDisconnectingState, mConnectModeState); 1006 addState(mDisconnectedState, mConnectModeState); 1007 addState(mWpsRunningState, mConnectModeState); 1008 addState(mWaitForP2pDisableState, mSupplicantStartedState); 1009 addState(mDriverStoppingState, mSupplicantStartedState); 1010 addState(mDriverStoppedState, mSupplicantStartedState); 1011 addState(mSupplicantStoppingState, mDefaultState); 1012 addState(mSoftApStartingState, mDefaultState); 1013 addState(mSoftApStartedState, mDefaultState); 1014 addState(mTetheringState, mSoftApStartedState); 1015 addState(mTetheredState, mSoftApStartedState); 1016 addState(mUntetheringState, mSoftApStartedState); 1017 1018 setInitialState(mInitialState); 1019 1020 setLogRecSize(3000); 1021 setLogOnlyTransitions(false); 1022 if (VDBG) setDbg(true); 1023 1024 //start the state machine 1025 start(); 1026 1027 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 1028 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1029 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 1030 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1031 } 1032 1033 private int mVerboseLoggingLevel = 0; 1034 1035 int getVerboseLoggingLevel() { 1036 return mVerboseLoggingLevel; 1037 } 1038 1039 void enableVerboseLogging(int verbose) { 1040 mVerboseLoggingLevel = verbose; 1041 if (verbose > 0) { 1042 DBG = true; 1043 VDBG = true; 1044 PDBG = true; 1045 mLogMessages = true; 1046 mWifiNative.setSupplicantLogLevel("DEBUG"); 1047 } else { 1048 DBG = false; 1049 VDBG = false; 1050 PDBG = false; 1051 mLogMessages = false; 1052 mWifiNative.setSupplicantLogLevel("INFO"); 1053 } 1054 mWifiAutoJoinController.enableVerboseLogging(verbose); 1055 mWifiMonitor.enableVerboseLogging(verbose); 1056 mWifiNative.enableVerboseLogging(verbose); 1057 mWifiConfigStore.enableVerboseLogging(verbose); 1058 mSupplicantStateTracker.enableVerboseLogging(verbose); 1059 } 1060 1061 private int mAggressiveHandover = 0; 1062 1063 int getAggressiveHandover() { 1064 return mAggressiveHandover; 1065 } 1066 1067 void enableAggressiveHandover(int enabled) { 1068 mAggressiveHandover = enabled; 1069 } 1070 1071 public void setAllowScansWithTraffic(int enabled) { 1072 mWifiConfigStore.alwaysEnableScansWhileAssociated = enabled; 1073 } 1074 1075 public int getAllowScansWithTraffic() { 1076 return mWifiConfigStore.alwaysEnableScansWhileAssociated; 1077 } 1078 1079 /* 1080 * 1081 * Framework scan control 1082 */ 1083 1084 private boolean mAlarmEnabled = false; 1085 /* This is set from the overlay config file or from a secure setting. 1086 * A value of 0 disables scanning in the framework. 1087 */ 1088 private long mFrameworkScanIntervalMs = 10000; 1089 1090 private long mCurrentScanAlarmMs = 10000; 1091 private void setScanAlarm(boolean enabled, int delayMilli) { 1092 if (PDBG) { 1093 loge("setScanAlarm " + enabled 1094 + " period " + mCurrentScanAlarmMs 1095 + " initial delay " + delayMilli); 1096 } 1097 if (mCurrentScanAlarmMs <= 0) enabled = false; 1098 if (enabled == mAlarmEnabled) return; 1099 if (enabled) { 1100 long initialDelayMilli; 1101 if (delayMilli <= 0) { 1102 // scan now 1103 startScan(SCAN_ALARM_SOURCE, 0, null, null); 1104 initialDelayMilli = mCurrentScanAlarmMs; 1105 } else { 1106 initialDelayMilli = delayMilli; 1107 } 1108 1109 int type = AlarmManager.RTC; 1110 1111 /* Set RTC_WAKEUP alarms if PNO is not supported - because no one is */ 1112 /* going to wake up the host processor to look for access points */ 1113 if (mBackgroundScanSupported == false) 1114 type = AlarmManager.RTC_WAKEUP; 1115 1116 mAlarmManager.setRepeating(type, 1117 System.currentTimeMillis() + initialDelayMilli, 1118 mCurrentScanAlarmMs, 1119 mScanIntent); 1120 mAlarmEnabled = true; 1121 } else { 1122 mAlarmManager.cancel(mScanIntent); 1123 mAlarmEnabled = false; 1124 } 1125 } 1126 1127 private boolean setRandomMacOui() { 1128 String oui = mContext.getResources().getString( 1129 R.string.config_wifi_random_mac_oui, GOOGLE_OUI); 1130 String[] ouiParts = oui.split("-"); 1131 byte[] ouiBytes = new byte[3]; 1132 ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF); 1133 ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF); 1134 ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF); 1135 1136 logd("Setting OUI to " + oui); 1137 return mWifiNative.setScanningMacOui(ouiBytes); 1138 } 1139 1140 /********************************************************* 1141 * Methods exposed for public use 1142 ********************************************************/ 1143 1144 public Messenger getMessenger() { 1145 return new Messenger(getHandler()); 1146 } 1147 1148 public WifiMonitor getWifiMonitor() { 1149 return mWifiMonitor; 1150 } 1151 1152 /** 1153 * TODO: doc 1154 */ 1155 public boolean syncPingSupplicant(AsyncChannel channel) { 1156 Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); 1157 boolean result = (resultMsg.arg1 != FAILURE); 1158 resultMsg.recycle(); 1159 return result; 1160 } 1161 1162 public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { 1163 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); 1164 List<WifiChannel> list = null; 1165 if (resultMsg.obj != null) { 1166 list = new ArrayList<WifiChannel>(); 1167 String freqs = (String) resultMsg.obj; 1168 String[] lines = freqs.split("\n"); 1169 for (String line : lines) 1170 if (line.contains("MHz")) { 1171 // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" 1172 WifiChannel c = new WifiChannel(); 1173 String[] prop = line.split(" "); 1174 if (prop.length < 5) continue; 1175 try { 1176 c.channelNum = Integer.parseInt(prop[1]); 1177 c.freqMHz = Integer.parseInt(prop[3]); 1178 } catch (NumberFormatException e) { } 1179 c.isDFS = line.contains("(DFS)"); 1180 list.add(c); 1181 } else if (line.contains("Mode[B] Channels:")) { 1182 // B channels are the same as G channels, skipped 1183 break; 1184 } 1185 } 1186 resultMsg.recycle(); 1187 return (list != null && list.size() > 0) ? list : null; 1188 } 1189 1190 1191 /** 1192 * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is 1193 * given to callingUid. 1194 * 1195 * @param callingUid The uid initiating the wifi scan. Blame will be given here unless 1196 * workSource is specified. 1197 * @param workSource If not null, blame is given to workSource. 1198 * @param settings Scan settings, see {@link ScanSettings}. 1199 */ 1200 public void startScan(int callingUid, int scanCounter, 1201 ScanSettings settings, WorkSource workSource) { 1202 Bundle bundle = new Bundle(); 1203 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); 1204 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1205 bundle.putLong(SCAN_REQUEST_TIME, System.currentTimeMillis()); 1206 sendMessage(CMD_START_SCAN, callingUid, scanCounter, bundle); 1207 } 1208 1209 /** 1210 * start or stop batched scanning using the given settings 1211 */ 1212 public void setBatchedScanSettings(BatchedScanSettings settings, int callingUid, int csph, 1213 WorkSource workSource) { 1214 Bundle bundle = new Bundle(); 1215 bundle.putParcelable(BATCHED_SETTING, settings); 1216 bundle.putParcelable(BATCHED_WORKSOURCE, workSource); 1217 sendMessage(CMD_SET_BATCHED_SCAN, callingUid, csph, bundle); 1218 } 1219 1220 public List<BatchedScanResult> syncGetBatchedScanResultsList() { 1221 synchronized (mBatchedScanResults) { 1222 List<BatchedScanResult> batchedScanList = 1223 new ArrayList<BatchedScanResult>(mBatchedScanResults.size()); 1224 for(BatchedScanResult result: mBatchedScanResults) { 1225 batchedScanList.add(new BatchedScanResult(result)); 1226 } 1227 return batchedScanList; 1228 } 1229 } 1230 1231 public void requestBatchedScanPoll() { 1232 sendMessage(CMD_POLL_BATCHED_SCAN); 1233 } 1234 1235 private void startBatchedScan() { 1236 if (mBatchedScanSettings == null) return; 1237 1238 if (mDhcpActive) { 1239 if (DBG) log("not starting Batched Scans due to DHCP"); 1240 return; 1241 } 1242 1243 // first grab any existing data 1244 retrieveBatchedScanData(); 1245 1246 if (PDBG) loge("try starting Batched Scans due to DHCP"); 1247 1248 1249 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1250 1251 String scansExpected = mWifiNative.setBatchedScanSettings(mBatchedScanSettings); 1252 try { 1253 mExpectedBatchedScans = Integer.parseInt(scansExpected); 1254 setNextBatchedAlarm(mExpectedBatchedScans); 1255 if (mExpectedBatchedScans > 0) noteBatchedScanStart(); 1256 } catch (NumberFormatException e) { 1257 stopBatchedScan(); 1258 loge("Exception parsing WifiNative.setBatchedScanSettings response " + e); 1259 } 1260 } 1261 1262 // called from BroadcastListener 1263 private void startNextBatchedScanAsync() { 1264 sendMessage(CMD_START_NEXT_BATCHED_SCAN); 1265 } 1266 1267 private void startNextBatchedScan() { 1268 // first grab any existing data 1269 retrieveBatchedScanData(); 1270 1271 setNextBatchedAlarm(mExpectedBatchedScans); 1272 } 1273 1274 private void handleBatchedScanPollRequest() { 1275 if (DBG) { 1276 log("handleBatchedScanPoll Request - mBatchedScanMinPollTime=" + 1277 mBatchedScanMinPollTime + " , mBatchedScanSettings=" + 1278 mBatchedScanSettings); 1279 } 1280 // if there is no appropriate PollTime that's because we either aren't 1281 // batching or we've already set a time for a poll request 1282 if (mBatchedScanMinPollTime == 0) return; 1283 if (mBatchedScanSettings == null) return; 1284 1285 long now = System.currentTimeMillis(); 1286 1287 if (now > mBatchedScanMinPollTime) { 1288 // do the poll and reset our timers 1289 startNextBatchedScan(); 1290 } else { 1291 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, mBatchedScanMinPollTime, 1292 mBatchedScanIntervalIntent); 1293 mBatchedScanMinPollTime = 0; 1294 } 1295 } 1296 1297 // return true if new/different 1298 private boolean recordBatchedScanSettings(int responsibleUid, int csph, Bundle bundle) { 1299 BatchedScanSettings settings = bundle.getParcelable(BATCHED_SETTING); 1300 WorkSource responsibleWorkSource = bundle.getParcelable(BATCHED_WORKSOURCE); 1301 1302 if (DBG) { 1303 log("set batched scan to " + settings + " for uid=" + responsibleUid + 1304 ", worksource=" + responsibleWorkSource); 1305 } 1306 if (settings != null) { 1307 if (settings.equals(mBatchedScanSettings)) return false; 1308 } else { 1309 if (mBatchedScanSettings == null) return false; 1310 } 1311 mBatchedScanSettings = settings; 1312 if (responsibleWorkSource == null) responsibleWorkSource = new WorkSource(responsibleUid); 1313 mBatchedScanWorkSource = responsibleWorkSource; 1314 mBatchedScanCsph = csph; 1315 return true; 1316 } 1317 1318 private void stopBatchedScan() { 1319 mAlarmManager.cancel(mBatchedScanIntervalIntent); 1320 retrieveBatchedScanData(); 1321 mWifiNative.setBatchedScanSettings(null); 1322 noteBatchedScanStop(); 1323 } 1324 1325 private void setNextBatchedAlarm(int scansExpected) { 1326 1327 if (mBatchedScanSettings == null || scansExpected < 1) return; 1328 1329 mBatchedScanMinPollTime = System.currentTimeMillis() + 1330 mBatchedScanSettings.scanIntervalSec * 1000; 1331 1332 if (mBatchedScanSettings.maxScansPerBatch < scansExpected) { 1333 scansExpected = mBatchedScanSettings.maxScansPerBatch; 1334 } 1335 1336 int secToFull = mBatchedScanSettings.scanIntervalSec; 1337 secToFull *= scansExpected; 1338 1339 int debugPeriod = SystemProperties.getInt("wifi.batchedScan.pollPeriod", 0); 1340 if (debugPeriod > 0) secToFull = debugPeriod; 1341 1342 // set the alarm to do the next poll. We set it a little short as we'd rather 1343 // wake up wearly than miss a scan due to buffer overflow 1344 mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 1345 + ((secToFull - (mBatchedScanSettings.scanIntervalSec / 2)) * 1000), 1346 mBatchedScanIntervalIntent); 1347 } 1348 1349 /** 1350 * Start reading new scan data 1351 * Data comes in as: 1352 * "scancount=5\n" 1353 * "nextcount=5\n" 1354 * "apcount=3\n" 1355 * "trunc\n" (optional) 1356 * "bssid=...\n" 1357 * "ssid=...\n" 1358 * "freq=...\n" (in Mhz) 1359 * "level=...\n" 1360 * "dist=...\n" (in cm) 1361 * "distsd=...\n" (standard deviation, in cm) 1362 * "====" 1363 * "bssid=...\n" 1364 * etc 1365 * "====" 1366 * "bssid=...\n" 1367 * etc 1368 * "%%%%" 1369 * "apcount=2\n" 1370 * "bssid=...\n" 1371 * etc 1372 * "%%%% 1373 * etc 1374 * "----" 1375 */ 1376 private final static boolean DEBUG_PARSE = false; 1377 private void retrieveBatchedScanData() { 1378 String rawData = mWifiNative.getBatchedScanResults(); 1379 if (DEBUG_PARSE) log("rawData = " + rawData); 1380 mBatchedScanMinPollTime = 0; 1381 if (rawData == null || rawData.equalsIgnoreCase("OK")) { 1382 loge("Unexpected BatchedScanResults :" + rawData); 1383 return; 1384 } 1385 1386 int scanCount = 0; 1387 final String END_OF_BATCHES = "----"; 1388 final String SCANCOUNT = "scancount="; 1389 final String TRUNCATED = "trunc"; 1390 final String AGE = "age="; 1391 final String DIST = "dist="; 1392 final String DISTSD = "distSd="; 1393 1394 String splitData[] = rawData.split("\n"); 1395 int n = 0; 1396 if (splitData[n].startsWith(SCANCOUNT)) { 1397 try { 1398 scanCount = Integer.parseInt(splitData[n++].substring(SCANCOUNT.length())); 1399 } catch (NumberFormatException e) { 1400 loge("scancount parseInt Exception from " + splitData[n]); 1401 } 1402 } else log("scancount not found"); 1403 if (scanCount == 0) { 1404 loge("scanCount==0 - aborting"); 1405 return; 1406 } 1407 1408 final Intent intent = new Intent(WifiManager.BATCHED_SCAN_RESULTS_AVAILABLE_ACTION); 1409 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1410 1411 synchronized (mBatchedScanResults) { 1412 mBatchedScanResults.clear(); 1413 BatchedScanResult batchedScanResult = new BatchedScanResult(); 1414 1415 String bssid = null; 1416 WifiSsid wifiSsid = null; 1417 int level = 0; 1418 int freq = 0; 1419 int dist, distSd; 1420 long tsf = 0; 1421 dist = distSd = ScanResult.UNSPECIFIED; 1422 final long now = SystemClock.elapsedRealtime(); 1423 final int bssidStrLen = BSSID_STR.length(); 1424 1425 while (true) { 1426 while (n < splitData.length) { 1427 if (DEBUG_PARSE) logd("parsing " + splitData[n]); 1428 if (splitData[n].equals(END_OF_BATCHES)) { 1429 if (n+1 != splitData.length) { 1430 loge("didn't consume " + (splitData.length-n)); 1431 } 1432 if (mBatchedScanResults.size() > 0) { 1433 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1434 } 1435 logd("retrieveBatchedScanResults X"); 1436 return; 1437 } 1438 if ((splitData[n].equals(END_STR)) || splitData[n].equals(DELIMITER_STR)) { 1439 if (bssid != null) { 1440 batchedScanResult.scanResults.add(new ScanResult( 1441 wifiSsid, bssid, "", level, freq, tsf, dist, distSd)); 1442 wifiSsid = null; 1443 bssid = null; 1444 level = 0; 1445 freq = 0; 1446 tsf = 0; 1447 dist = distSd = ScanResult.UNSPECIFIED; 1448 } 1449 if (splitData[n].equals(END_STR)) { 1450 if (batchedScanResult.scanResults.size() != 0) { 1451 mBatchedScanResults.add(batchedScanResult); 1452 batchedScanResult = new BatchedScanResult(); 1453 } else { 1454 logd("Found empty batch"); 1455 } 1456 } 1457 } else if (splitData[n].equals(TRUNCATED)) { 1458 batchedScanResult.truncated = true; 1459 } else if (splitData[n].startsWith(BSSID_STR)) { 1460 bssid = new String(splitData[n].getBytes(), bssidStrLen, 1461 splitData[n].length() - bssidStrLen); 1462 } else if (splitData[n].startsWith(FREQ_STR)) { 1463 try { 1464 freq = Integer.parseInt(splitData[n].substring(FREQ_STR.length())); 1465 } catch (NumberFormatException e) { 1466 loge("Invalid freqency: " + splitData[n]); 1467 freq = 0; 1468 } 1469 } else if (splitData[n].startsWith(AGE)) { 1470 try { 1471 tsf = now - Long.parseLong(splitData[n].substring(AGE.length())); 1472 tsf *= 1000; // convert mS -> uS 1473 } catch (NumberFormatException e) { 1474 loge("Invalid timestamp: " + splitData[n]); 1475 tsf = 0; 1476 } 1477 } else if (splitData[n].startsWith(SSID_STR)) { 1478 wifiSsid = WifiSsid.createFromAsciiEncoded( 1479 splitData[n].substring(SSID_STR.length())); 1480 } else if (splitData[n].startsWith(LEVEL_STR)) { 1481 try { 1482 level = Integer.parseInt(splitData[n].substring(LEVEL_STR.length())); 1483 if (level > 0) level -= 256; 1484 } catch (NumberFormatException e) { 1485 loge("Invalid level: " + splitData[n]); 1486 level = 0; 1487 } 1488 } else if (splitData[n].startsWith(DIST)) { 1489 try { 1490 dist = Integer.parseInt(splitData[n].substring(DIST.length())); 1491 } catch (NumberFormatException e) { 1492 loge("Invalid distance: " + splitData[n]); 1493 dist = ScanResult.UNSPECIFIED; 1494 } 1495 } else if (splitData[n].startsWith(DISTSD)) { 1496 try { 1497 distSd = Integer.parseInt(splitData[n].substring(DISTSD.length())); 1498 } catch (NumberFormatException e) { 1499 loge("Invalid distanceSd: " + splitData[n]); 1500 distSd = ScanResult.UNSPECIFIED; 1501 } 1502 } else { 1503 loge("Unable to parse batched scan result line: " + splitData[n]); 1504 } 1505 n++; 1506 } 1507 rawData = mWifiNative.getBatchedScanResults(); 1508 if (DEBUG_PARSE) log("reading more data:\n" + rawData); 1509 if (rawData == null) { 1510 loge("Unexpected null BatchedScanResults"); 1511 return; 1512 } 1513 splitData = rawData.split("\n"); 1514 if (splitData.length == 0 || splitData[0].equals("ok")) { 1515 loge("batch scan results just ended!"); 1516 if (mBatchedScanResults.size() > 0) { 1517 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1518 } 1519 return; 1520 } 1521 n = 0; 1522 } 1523 } 1524 } 1525 1526 private long mDisconnectedTimeStamp = 0; 1527 1528 public long getDisconnectedTimeMilli() { 1529 if (getCurrentState() == mDisconnectedState 1530 && mDisconnectedTimeStamp != 0) { 1531 long now_ms = System.currentTimeMillis(); 1532 return now_ms - mDisconnectedTimeStamp; 1533 } 1534 return 0; 1535 } 1536 1537 // Keeping track of scan requests 1538 private long lastStartScanTimeStamp = 0; 1539 private long lastScanDuration = 0; 1540 // Last connect attempt is used to prevent scan requests: 1541 // - for a period of 10 seconds after attempting to connect 1542 private long lastConnectAttempt = 0; 1543 private String lastScanFreqs = null; 1544 1545 // For debugging, keep track of last message status handling 1546 // TODO, find an equivalent mechanism as part of parent class 1547 private static int MESSAGE_HANDLING_STATUS_PROCESSED = 2; 1548 private static int MESSAGE_HANDLING_STATUS_OK = 1; 1549 private static int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; 1550 private static int MESSAGE_HANDLING_STATUS_REFUSED = -1; 1551 private static int MESSAGE_HANDLING_STATUS_FAIL = -2; 1552 private static int MESSAGE_HANDLING_STATUS_BUFFERED = -3; 1553 private static int MESSAGE_HANDLING_STATUS_DEFERRED = -4; 1554 private static int MESSAGE_HANDLING_STATUS_DISCARD = -5; 1555 private static int MESSAGE_HANDLING_STATUS_LOOPED = -6; 1556 private static int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; 1557 1558 private int messageHandlingStatus = 0; 1559 1560 //TODO: this is used only to track connection attempts, however the link state and packet per 1561 //TODO: second logic should be folded into that 1562 private boolean isScanAllowed() { 1563 long now = System.currentTimeMillis(); 1564 if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { 1565 return false; 1566 } 1567 return true; 1568 } 1569 1570 private int mOnTime = 0; 1571 private int mTxTime = 0; 1572 private int mRxTime = 0; 1573 private int mOnTimeStartScan = 0; 1574 private int mTxTimeStartScan = 0; 1575 private int mRxTimeStartScan = 0; 1576 private int mOnTimeScan = 0; 1577 private int mTxTimeScan = 0; 1578 private int mRxTimeScan = 0; 1579 private int mOnTimeThisScan = 0; 1580 private int mTxTimeThisScan = 0; 1581 private int mRxTimeThisScan = 0; 1582 1583 private int mOnTimeScreenStateChange = 0; 1584 private int mOnTimeAtLastReport = 0; 1585 private long lastOntimeReportTimeStamp = 0; 1586 private long lastScreenStateChangeTimeStamp = 0; 1587 private int mOnTimeLastReport = 0; 1588 private int mTxTimeLastReport = 0; 1589 private int mRxTimeLastReport = 0; 1590 1591 private long lastLinkLayerStatsUpdate = 0; 1592 1593 String reportOnTime() { 1594 long now = System.currentTimeMillis(); 1595 StringBuilder sb = new StringBuilder(); 1596 // Report stats since last report 1597 int on = mOnTime - mOnTimeLastReport; 1598 mOnTimeLastReport = mOnTime; 1599 int tx = mTxTime - mTxTimeLastReport; 1600 mTxTimeLastReport = mTxTime; 1601 int rx = mRxTime - mRxTimeLastReport; 1602 mRxTimeLastReport = mRxTime; 1603 int period = (int)(now - lastOntimeReportTimeStamp); 1604 lastOntimeReportTimeStamp = now; 1605 sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); 1606 // Report stats since Screen State Changed 1607 on = mOnTime - mOnTimeScreenStateChange; 1608 period = (int)(now - lastScreenStateChangeTimeStamp); 1609 sb.append(String.format(" from screen [on:%d period:%d]", on, period)); 1610 return sb.toString(); 1611 } 1612 1613 WifiLinkLayerStats getWifiLinkLayerStats(boolean dbg) { 1614 WifiLinkLayerStats stats = null; 1615 if (mWifiLinkLayerStatsSupported > 0) { 1616 String name = "wlan0"; 1617 stats = mWifiNative.getWifiLinkLayerStats(name); 1618 if (name != null && stats == null && mWifiLinkLayerStatsSupported > 0) { 1619 mWifiLinkLayerStatsSupported -= 1; 1620 } else if (stats != null) { 1621 lastLinkLayerStatsUpdate = System.currentTimeMillis(); 1622 mOnTime = stats.on_time; 1623 mTxTime = stats.tx_time; 1624 mRxTime = stats.rx_time; 1625 if (dbg) { 1626 loge("WifiLinkLayerStats:"); 1627 loge(stats.toString()); 1628 } 1629 } 1630 } 1631 return stats; 1632 } 1633 1634 void startRadioScanStats() { 1635 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1636 if (stats != null) { 1637 mOnTimeStartScan = stats.on_time; 1638 mTxTimeStartScan = stats.tx_time; 1639 mRxTimeStartScan = stats.rx_time; 1640 mOnTime = stats.on_time; 1641 mTxTime = stats.tx_time; 1642 mRxTime = stats.rx_time; 1643 } 1644 } 1645 1646 void closeRadioScanStats() { 1647 WifiLinkLayerStats stats = getWifiLinkLayerStats(false); 1648 if (stats != null) { 1649 mOnTimeThisScan = stats.on_time - mOnTimeStartScan; 1650 mTxTimeThisScan = stats.tx_time - mTxTimeStartScan; 1651 mRxTimeThisScan = stats.rx_time - mRxTimeStartScan; 1652 mOnTimeScan += mOnTimeThisScan; 1653 mTxTimeScan += mTxTimeThisScan; 1654 mRxTimeScan += mRxTimeThisScan; 1655 } 1656 } 1657 1658 // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. 1659 private void noteScanStart(int callingUid, WorkSource workSource) { 1660 long now = System.currentTimeMillis(); 1661 lastStartScanTimeStamp = now; 1662 lastScanDuration = 0; 1663 if (DBG) { 1664 String ts = String.format("[%,d ms]", now); 1665 if (workSource != null) { 1666 loge(ts + " noteScanStart" + workSource.toString() 1667 + " uid " + Integer.toString(callingUid)); 1668 } else { 1669 loge(ts + " noteScanstart no scan source"); 1670 } 1671 } 1672 startRadioScanStats(); 1673 if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE 1674 && callingUid != SCAN_ALARM_SOURCE) 1675 || workSource != null)) { 1676 mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); 1677 try { 1678 mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); 1679 } catch (RemoteException e) { 1680 log(e.toString()); 1681 } 1682 } 1683 } 1684 1685 private void noteScanEnd() { 1686 long now = System.currentTimeMillis(); 1687 if (lastStartScanTimeStamp != 0) { 1688 lastScanDuration = now - lastStartScanTimeStamp; 1689 } 1690 lastStartScanTimeStamp = 0; 1691 if (DBG) { 1692 String ts = String.format("[%,d ms]", now); 1693 if (mScanWorkSource != null) 1694 loge(ts + " noteScanEnd " + mScanWorkSource.toString()); 1695 else 1696 loge(ts + " noteScanEnd no scan source"); 1697 } 1698 if (mScanWorkSource != null) { 1699 try { 1700 mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); 1701 } catch (RemoteException e) { 1702 log(e.toString()); 1703 } finally { 1704 mScanWorkSource = null; 1705 } 1706 } 1707 } 1708 1709 private void noteBatchedScanStart() { 1710 if (PDBG) loge("noteBatchedScanstart()"); 1711 // note the end of a previous scan set 1712 if (mNotedBatchedScanWorkSource != null && 1713 (mNotedBatchedScanWorkSource.equals(mBatchedScanWorkSource) == false || 1714 mNotedBatchedScanCsph != mBatchedScanCsph)) { 1715 try { 1716 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1717 } catch (RemoteException e) { 1718 log(e.toString()); 1719 } finally { 1720 mNotedBatchedScanWorkSource = null; 1721 mNotedBatchedScanCsph = 0; 1722 } 1723 } 1724 // note the start of the new 1725 try { 1726 mBatteryStats.noteWifiBatchedScanStartedFromSource(mBatchedScanWorkSource, 1727 mBatchedScanCsph); 1728 mNotedBatchedScanWorkSource = mBatchedScanWorkSource; 1729 mNotedBatchedScanCsph = mBatchedScanCsph; 1730 } catch (RemoteException e) { 1731 log(e.toString()); 1732 } 1733 } 1734 1735 private void noteBatchedScanStop() { 1736 if (PDBG) loge("noteBatchedScanstop()"); 1737 1738 if (mNotedBatchedScanWorkSource != null) { 1739 try { 1740 mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); 1741 } catch (RemoteException e) { 1742 log(e.toString()); 1743 } finally { 1744 mNotedBatchedScanWorkSource = null; 1745 mNotedBatchedScanCsph = 0; 1746 } 1747 } 1748 } 1749 1750 private void handleScanRequest(int type, Message message) { 1751 // unbundle parameters 1752 Bundle bundle = (Bundle) message.obj; 1753 ScanSettings settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); 1754 WorkSource workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); 1755 1756 // parse scan settings 1757 String freqs = null; 1758 if (settings != null && settings.channelSet != null) { 1759 StringBuilder sb = new StringBuilder(); 1760 boolean first = true; 1761 for (WifiChannel channel : settings.channelSet) { 1762 if (!first) sb.append(','); else first = false; 1763 sb.append(channel.freqMHz); 1764 } 1765 freqs = sb.toString(); 1766 } 1767 1768 // call wifi native to start the scan 1769 if (startScanNative(type, freqs)) { 1770 // only count battery consumption if scan request is accepted 1771 noteScanStart(message.arg1, workSource); 1772 // a full scan covers everything, clearing scan request buffer 1773 if (freqs == null) 1774 mBufferedScanMsg.clear(); 1775 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 1776 return; 1777 } 1778 1779 // if reach here, scan request is rejected 1780 1781 if (!mIsScanOngoing) { 1782 // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), 1783 1784 // discard this request and pop up the next one 1785 if (mBufferedScanMsg.size() > 0) { 1786 sendMessage(mBufferedScanMsg.remove()); 1787 } 1788 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 1789 } else if (!mIsFullScanOngoing) { 1790 // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, 1791 // buffer the scan request to make sure specified channels will be scanned eventually 1792 if (freqs == null) 1793 mBufferedScanMsg.clear(); 1794 if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { 1795 Message msg = obtainMessage(CMD_START_SCAN, 1796 message.arg1, message.arg2, bundle); 1797 mBufferedScanMsg.add(msg); 1798 } else { 1799 // if too many requests in buffer, combine them into a single full scan 1800 bundle = new Bundle(); 1801 bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); 1802 bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); 1803 Message msg = obtainMessage(CMD_START_SCAN, message.arg1, message.arg2, bundle); 1804 mBufferedScanMsg.clear(); 1805 mBufferedScanMsg.add(msg); 1806 } 1807 messageHandlingStatus = MESSAGE_HANDLING_STATUS_LOOPED; 1808 } else { 1809 // mIsScanOngoing and mIsFullScanOngoing 1810 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 1811 } 1812 } 1813 1814 1815 /** return true iff scan request is accepted */ 1816 private boolean startScanNative(int type, String freqs) { 1817 if (mWifiNative.scan(type, freqs)) { 1818 mIsScanOngoing = true; 1819 mIsFullScanOngoing = (freqs == null); 1820 lastScanFreqs = freqs; 1821 return true; 1822 } 1823 return false; 1824 } 1825 1826 /** 1827 * TODO: doc 1828 */ 1829 public void setSupplicantRunning(boolean enable) { 1830 if (enable) { 1831 sendMessage(CMD_START_SUPPLICANT); 1832 } else { 1833 sendMessage(CMD_STOP_SUPPLICANT); 1834 } 1835 } 1836 1837 /** 1838 * TODO: doc 1839 */ 1840 public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { 1841 if (enable) { 1842 sendMessage(CMD_START_AP, wifiConfig); 1843 } else { 1844 sendMessage(CMD_STOP_AP); 1845 } 1846 } 1847 1848 public void setWifiApConfiguration(WifiConfiguration config) { 1849 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 1850 } 1851 1852 public WifiConfiguration syncGetWifiApConfiguration() { 1853 Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); 1854 WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; 1855 resultMsg.recycle(); 1856 return ret; 1857 } 1858 1859 /** 1860 * TODO: doc 1861 */ 1862 public int syncGetWifiState() { 1863 return mWifiState.get(); 1864 } 1865 1866 /** 1867 * TODO: doc 1868 */ 1869 public String syncGetWifiStateByName() { 1870 switch (mWifiState.get()) { 1871 case WIFI_STATE_DISABLING: 1872 return "disabling"; 1873 case WIFI_STATE_DISABLED: 1874 return "disabled"; 1875 case WIFI_STATE_ENABLING: 1876 return "enabling"; 1877 case WIFI_STATE_ENABLED: 1878 return "enabled"; 1879 case WIFI_STATE_UNKNOWN: 1880 return "unknown state"; 1881 default: 1882 return "[invalid state]"; 1883 } 1884 } 1885 1886 /** 1887 * TODO: doc 1888 */ 1889 public int syncGetWifiApState() { 1890 return mWifiApState.get(); 1891 } 1892 1893 /** 1894 * TODO: doc 1895 */ 1896 public String syncGetWifiApStateByName() { 1897 switch (mWifiApState.get()) { 1898 case WIFI_AP_STATE_DISABLING: 1899 return "disabling"; 1900 case WIFI_AP_STATE_DISABLED: 1901 return "disabled"; 1902 case WIFI_AP_STATE_ENABLING: 1903 return "enabling"; 1904 case WIFI_AP_STATE_ENABLED: 1905 return "enabled"; 1906 case WIFI_AP_STATE_FAILED: 1907 return "failed"; 1908 default: 1909 return "[invalid state]"; 1910 } 1911 } 1912 1913 /** 1914 * Get status information for the current connection, if any. 1915 * @return a {@link WifiInfo} object containing information about the current connection 1916 * 1917 */ 1918 public WifiInfo syncRequestConnectionInfo() { 1919 return mWifiInfo; 1920 } 1921 1922 public DhcpResults syncGetDhcpResults() { 1923 synchronized (mDhcpResultsLock) { 1924 return new DhcpResults(mDhcpResults); 1925 } 1926 } 1927 1928 /** 1929 * TODO: doc 1930 */ 1931 public void setDriverStart(boolean enable) { 1932 if (enable) { 1933 sendMessage(CMD_START_DRIVER); 1934 } else { 1935 sendMessage(CMD_STOP_DRIVER); 1936 } 1937 } 1938 1939 /** 1940 * TODO: doc 1941 */ 1942 public void setOperationalMode(int mode) { 1943 if (DBG) log("setting operational mode to " + String.valueOf(mode)); 1944 sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); 1945 } 1946 1947 /** 1948 * TODO: doc 1949 */ 1950 public List<ScanResult> syncGetScanResultsList() { 1951 synchronized (mScanResultCache) { 1952 List<ScanResult> scanList = new ArrayList<ScanResult>(); 1953 for(ScanResult result: mScanResults) { 1954 scanList.add(new ScanResult(result)); 1955 } 1956 return scanList; 1957 } 1958 } 1959 1960 /** 1961 * Get unsynchronized pointer to scan result list 1962 * Can be called only from AutoJoinController which runs in the WifiStateMachine context 1963 */ 1964 public List<ScanResult> getScanResultsListNoCopyUnsync() { 1965 return mScanResults; 1966 } 1967 1968 /** 1969 * Disconnect from Access Point 1970 */ 1971 public void disconnectCommand() { 1972 sendMessage(CMD_DISCONNECT); 1973 } 1974 1975 /** 1976 * Initiate a reconnection to AP 1977 */ 1978 public void reconnectCommand() { 1979 sendMessage(CMD_RECONNECT); 1980 } 1981 1982 /** 1983 * Initiate a re-association to AP 1984 */ 1985 public void reassociateCommand() { 1986 sendMessage(CMD_REASSOCIATE); 1987 } 1988 1989 /** 1990 * Reload networks and then reconnect; helps load correct data for TLS networks 1991 */ 1992 1993 public void reloadTlsNetworksAndReconnect() { 1994 sendMessage(CMD_RELOAD_TLS_AND_RECONNECT); 1995 } 1996 1997 /** 1998 * Add a network synchronously 1999 * 2000 * @return network id of the new network 2001 */ 2002 public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) { 2003 Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config); 2004 int result = resultMsg.arg1; 2005 resultMsg.recycle(); 2006 return result; 2007 } 2008 2009 /** 2010 * Get configured networks synchronously 2011 * @param channel 2012 * @return 2013 */ 2014 2015 public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) { 2016 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid); 2017 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2018 resultMsg.recycle(); 2019 return result; 2020 } 2021 2022 public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) { 2023 Message resultMsg = channel.sendMessageSynchronously( 2024 CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS); 2025 List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj; 2026 resultMsg.recycle(); 2027 return result; 2028 } 2029 2030 2031 /** 2032 * Get connection statistics synchronously 2033 * @param channel 2034 * @return 2035 */ 2036 2037 public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { 2038 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); 2039 WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; 2040 resultMsg.recycle(); 2041 return result; 2042 } 2043 2044 /** 2045 * Get adaptors synchronously 2046 */ 2047 2048 public int syncGetSupportedFeatures(AsyncChannel channel) { 2049 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES); 2050 int supportedFeatureSet = resultMsg.arg1; 2051 resultMsg.recycle(); 2052 return supportedFeatureSet; 2053 } 2054 2055 /** 2056 * Get link layers stats for adapter synchronously 2057 */ 2058 public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) { 2059 Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS); 2060 WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj; 2061 resultMsg.recycle(); 2062 return result; 2063 } 2064 2065 /** 2066 * Delete a network 2067 * 2068 * @param networkId id of the network to be removed 2069 */ 2070 public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) { 2071 Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId); 2072 boolean result = (resultMsg.arg1 != FAILURE); 2073 resultMsg.recycle(); 2074 return result; 2075 } 2076 2077 /** 2078 * Enable a network 2079 * 2080 * @param netId network id of the network 2081 * @param disableOthers true, if all other networks have to be disabled 2082 * @return {@code true} if the operation succeeds, {@code false} otherwise 2083 */ 2084 public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) { 2085 Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId, 2086 disableOthers ? 1 : 0); 2087 boolean result = (resultMsg.arg1 != FAILURE); 2088 resultMsg.recycle(); 2089 return result; 2090 } 2091 2092 /** 2093 * Disable a network 2094 * 2095 * @param netId network id of the network 2096 * @return {@code true} if the operation succeeds, {@code false} otherwise 2097 */ 2098 public boolean syncDisableNetwork(AsyncChannel channel, int netId) { 2099 Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId); 2100 boolean result = (resultMsg.arg1 != WifiManager.DISABLE_NETWORK_FAILED); 2101 resultMsg.recycle(); 2102 return result; 2103 } 2104 2105 /** 2106 * Retrieves a WPS-NFC configuration token for the specified network 2107 * @return a hex string representation of the WPS-NFC configuration token 2108 */ 2109 public String syncGetWpsNfcConfigurationToken(int netId) { 2110 return mWifiNative.getNfcWpsConfigurationToken(netId); 2111 } 2112 2113 /** 2114 * Blacklist a BSSID. This will avoid the AP if there are 2115 * alternate APs to connect 2116 * 2117 * @param bssid BSSID of the network 2118 */ 2119 public void addToBlacklist(String bssid) { 2120 sendMessage(CMD_BLACKLIST_NETWORK, bssid); 2121 } 2122 2123 /** 2124 * Clear the blacklist list 2125 * 2126 */ 2127 public void clearBlacklist() { 2128 sendMessage(CMD_CLEAR_BLACKLIST); 2129 } 2130 2131 public void enableRssiPolling(boolean enabled) { 2132 sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); 2133 } 2134 2135 public void enableAllNetworks() { 2136 sendMessage(CMD_ENABLE_ALL_NETWORKS); 2137 } 2138 2139 /** 2140 * Start filtering Multicast v4 packets 2141 */ 2142 public void startFilteringMulticastV4Packets() { 2143 mFilteringMulticastV4Packets.set(true); 2144 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); 2145 } 2146 2147 /** 2148 * Stop filtering Multicast v4 packets 2149 */ 2150 public void stopFilteringMulticastV4Packets() { 2151 mFilteringMulticastV4Packets.set(false); 2152 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); 2153 } 2154 2155 /** 2156 * Start filtering Multicast v4 packets 2157 */ 2158 public void startFilteringMulticastV6Packets() { 2159 sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); 2160 } 2161 2162 /** 2163 * Stop filtering Multicast v4 packets 2164 */ 2165 public void stopFilteringMulticastV6Packets() { 2166 sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 0); 2167 } 2168 2169 /** 2170 * Set high performance mode of operation. 2171 * Enabling would set active power mode and disable suspend optimizations; 2172 * disabling would set auto power mode and enable suspend optimizations 2173 * @param enable true if enable, false otherwise 2174 */ 2175 public void setHighPerfModeEnabled(boolean enable) { 2176 sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0); 2177 } 2178 2179 /** 2180 * Set the country code 2181 * @param countryCode following ISO 3166 format 2182 * @param persist {@code true} if the setting should be remembered. 2183 */ 2184 public void setCountryCode(String countryCode, boolean persist) { 2185 // If it's a good country code, apply after the current 2186 // wifi connection is terminated; ignore resetting of code 2187 // for now (it is unclear what the chipset should do when 2188 // country code is reset) 2189 int countryCodeSequence = mCountryCodeSequence.incrementAndGet(); 2190 if (TextUtils.isEmpty(countryCode)) { 2191 log("Ignoring resetting of country code"); 2192 } else { 2193 sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, countryCode); 2194 } 2195 } 2196 2197 /** 2198 * Set the operational frequency band 2199 * @param band 2200 * @param persist {@code true} if the setting should be remembered. 2201 */ 2202 public void setFrequencyBand(int band, boolean persist) { 2203 if (persist) { 2204 Settings.Global.putInt(mContext.getContentResolver(), 2205 Settings.Global.WIFI_FREQUENCY_BAND, 2206 band); 2207 } 2208 sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); 2209 } 2210 2211 /** 2212 * Enable TDLS for a specific MAC address 2213 */ 2214 public void enableTdls(String remoteMacAddress, boolean enable) { 2215 int enabler = enable ? 1 : 0; 2216 sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress); 2217 } 2218 2219 /** 2220 * Returns the operational frequency band 2221 */ 2222 public int getFrequencyBand() { 2223 return mFrequencyBand.get(); 2224 } 2225 2226 /** 2227 * Returns the wifi configuration file 2228 */ 2229 public String getConfigFile() { 2230 return mWifiConfigStore.getConfigFile(); 2231 } 2232 2233 /** 2234 * Send a message indicating bluetooth adapter connection state changed 2235 */ 2236 public void sendBluetoothAdapterStateChange(int state) { 2237 sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); 2238 } 2239 2240 /** 2241 * Save configuration on supplicant 2242 * 2243 * @return {@code true} if the operation succeeds, {@code false} otherwise 2244 * 2245 * TODO: deprecate this 2246 */ 2247 public boolean syncSaveConfig(AsyncChannel channel) { 2248 Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); 2249 boolean result = (resultMsg.arg1 != FAILURE); 2250 resultMsg.recycle(); 2251 return result; 2252 } 2253 2254 public void updateBatteryWorkSource(WorkSource newSource) { 2255 synchronized (mRunningWifiUids) { 2256 try { 2257 if (newSource != null) { 2258 mRunningWifiUids.set(newSource); 2259 } 2260 if (mIsRunning) { 2261 if (mReportedRunning) { 2262 // If the work source has changed since last time, need 2263 // to remove old work from battery stats. 2264 if (mLastRunningWifiUids.diff(mRunningWifiUids)) { 2265 mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids, 2266 mRunningWifiUids); 2267 mLastRunningWifiUids.set(mRunningWifiUids); 2268 } 2269 } else { 2270 // Now being started, report it. 2271 mBatteryStats.noteWifiRunning(mRunningWifiUids); 2272 mLastRunningWifiUids.set(mRunningWifiUids); 2273 mReportedRunning = true; 2274 } 2275 } else { 2276 if (mReportedRunning) { 2277 // Last reported we were running, time to stop. 2278 mBatteryStats.noteWifiStopped(mLastRunningWifiUids); 2279 mLastRunningWifiUids.clear(); 2280 mReportedRunning = false; 2281 } 2282 } 2283 mWakeLock.setWorkSource(newSource); 2284 } catch (RemoteException ignore) { 2285 } 2286 } 2287 } 2288 2289 @Override 2290 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2291 super.dump(fd, pw, args); 2292 mSupplicantStateTracker.dump(fd, pw, args); 2293 pw.println("mLinkProperties " + mLinkProperties); 2294 pw.println("mWifiInfo " + mWifiInfo); 2295 pw.println("mDhcpResults " + mDhcpResults); 2296 pw.println("mNetworkInfo " + mNetworkInfo); 2297 pw.println("mLastSignalLevel " + mLastSignalLevel); 2298 pw.println("mLastBssid " + mLastBssid); 2299 pw.println("mLastNetworkId " + mLastNetworkId); 2300 pw.println("mOperationalMode " + mOperationalMode); 2301 pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt); 2302 pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 2303 pw.println("Supplicant status " + mWifiNative.status(true)); 2304 pw.println("mEnableBackgroundScan " + mEnableBackgroundScan); 2305 pw.println("mLastSetCountryCode " + mLastSetCountryCode); 2306 pw.println("mPersistedCountryCode " + mPersistedCountryCode); 2307 pw.println(); 2308 mWifiConfigStore.dump(fd, pw, args); 2309 } 2310 2311 /********************************************************* 2312 * Internal private functions 2313 ********************************************************/ 2314 2315 private void logStateAndMessage(Message message, String state) { 2316 messageHandlingStatus = 0; 2317 if (mLogMessages) { 2318 //long now = SystemClock.elapsedRealtimeNanos(); 2319 //String ts = String.format("[%,d us]", now/1000); 2320 2321 loge( " " + state + " " + getLogRecString(message)); 2322 } 2323 } 2324 2325 /** 2326 * Return the additional string to be logged by LogRec, default 2327 * 2328 * @param msg that was processed 2329 * @return information to be logged as a String 2330 */ 2331 protected String getLogRecString(Message msg) { 2332 WifiConfiguration config; 2333 Long now; 2334 String report; 2335 StringBuilder sb = new StringBuilder(); 2336 if (mScreenOn) { 2337 sb.append("!"); 2338 } 2339 if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { 2340 sb.append("(").append(messageHandlingStatus).append(")"); 2341 } 2342 sb.append(smToString(msg)); 2343 if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { 2344 sb.append(" uid=" + msg.sendingUid); 2345 } 2346 switch (msg.what) { 2347 case CMD_START_SCAN: 2348 now = System.currentTimeMillis(); 2349 sb.append(" "); 2350 sb.append(Integer.toString(msg.arg1)); 2351 sb.append(" "); 2352 sb.append(Integer.toString(msg.arg2)); 2353 sb.append(" ic="); 2354 sb.append(Integer.toString(sScanAlarmIntentCount)); 2355 if (msg.obj != null) { 2356 Bundle bundle = (Bundle)msg.obj; 2357 Long request = bundle.getLong(SCAN_REQUEST_TIME, 0); 2358 if (request != 0) { 2359 sb.append(" proc(ms):").append(now - request); 2360 } 2361 } 2362 if (mIsScanOngoing) sb.append(" onGoing"); 2363 if (mIsFullScanOngoing) sb.append(" full"); 2364 if (lastStartScanTimeStamp != 0) { 2365 sb.append(" started:").append(lastStartScanTimeStamp); 2366 sb.append(",").append(now - lastStartScanTimeStamp); 2367 } 2368 if (lastScanDuration != 0) { 2369 sb.append(" dur:").append(lastScanDuration); 2370 } 2371 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2372 sb.append(" f=").append(mWifiInfo.getFrequency()); 2373 sb.append(" sc=").append(mWifiInfo.score); 2374 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2375 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2376 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2377 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2378 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2379 if (lastScanFreqs != null) { 2380 sb.append(" list=").append(lastScanFreqs); 2381 } else { 2382 sb.append(" fiv=").append(fullBandConnectedTimeIntervalMilli); 2383 } 2384 report = reportOnTime(); 2385 if (report != null) { 2386 sb.append(" ").append(report); 2387 } 2388 break; 2389 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 2390 sb.append(" "); 2391 sb.append(Integer.toString(msg.arg1)); 2392 sb.append(" "); 2393 sb.append(Integer.toString(msg.arg2)); 2394 StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; 2395 if (stateChangeResult != null) { 2396 sb.append(stateChangeResult.toString()); 2397 } 2398 break; 2399 case WifiManager.SAVE_NETWORK: 2400 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 2401 sb.append(" "); 2402 sb.append(Integer.toString(msg.arg1)); 2403 sb.append(" "); 2404 sb.append(Integer.toString(msg.arg2)); 2405 if (lastSavedConfigurationAttempt != null) { 2406 sb.append(" ").append(lastSavedConfigurationAttempt.configKey()); 2407 sb.append(" nid=").append(lastSavedConfigurationAttempt.networkId); 2408 if (lastSavedConfigurationAttempt.hiddenSSID) { 2409 sb.append(" hidden"); 2410 } 2411 if (lastSavedConfigurationAttempt.preSharedKey != null 2412 && !lastSavedConfigurationAttempt.preSharedKey.equals("*")) { 2413 sb.append(" hasPSK"); 2414 } 2415 if (lastSavedConfigurationAttempt.ephemeral) { 2416 sb.append(" ephemeral"); 2417 } 2418 if (lastSavedConfigurationAttempt.selfAdded) { 2419 sb.append(" selfAdded"); 2420 } 2421 sb.append(" cuid=").append(lastSavedConfigurationAttempt.creatorUid); 2422 sb.append(" suid=").append(lastSavedConfigurationAttempt.lastUpdateUid); 2423 } 2424 break; 2425 case WifiManager.FORGET_NETWORK: 2426 sb.append(" "); 2427 sb.append(Integer.toString(msg.arg1)); 2428 sb.append(" "); 2429 sb.append(Integer.toString(msg.arg2)); 2430 if (lastForgetConfigurationAttempt != null) { 2431 sb.append(" ").append(lastForgetConfigurationAttempt.configKey()); 2432 sb.append(" nid=").append(lastForgetConfigurationAttempt.networkId); 2433 if (lastForgetConfigurationAttempt.hiddenSSID) { 2434 sb.append(" hidden"); 2435 } 2436 if (lastForgetConfigurationAttempt.preSharedKey != null) { 2437 sb.append(" hasPSK"); 2438 } 2439 if (lastForgetConfigurationAttempt.ephemeral) { 2440 sb.append(" ephemeral"); 2441 } 2442 if (lastForgetConfigurationAttempt.selfAdded) { 2443 sb.append(" selfAdded"); 2444 } 2445 sb.append(" cuid=").append(lastForgetConfigurationAttempt.creatorUid); 2446 sb.append(" suid=").append(lastForgetConfigurationAttempt.lastUpdateUid); 2447 sb.append(" ajst=").append(lastForgetConfigurationAttempt.autoJoinStatus); 2448 } 2449 break; 2450 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 2451 sb.append(" "); 2452 sb.append(Integer.toString(msg.arg1)); 2453 sb.append(" "); 2454 sb.append(Integer.toString(msg.arg2)); 2455 String bssid = (String)msg.obj; 2456 if (bssid != null && bssid.length()>0) { 2457 sb.append(" "); 2458 sb.append(bssid); 2459 } 2460 sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID)); 2461 break; 2462 case WifiMonitor.SCAN_RESULTS_EVENT: 2463 sb.append(" "); 2464 sb.append(Integer.toString(msg.arg1)); 2465 sb.append(" "); 2466 sb.append(Integer.toString(msg.arg2)); 2467 if (mScanResults != null) { 2468 sb.append(" found="); 2469 sb.append(mScanResults.size()); 2470 } 2471 sb.append(" known=").append(mNumScanResultsKnown); 2472 sb.append(" got=").append(mNumScanResultsReturned); 2473 if (lastScanDuration != 0) { 2474 sb.append(" dur:").append(lastScanDuration); 2475 } 2476 if (mOnTime != 0) { 2477 sb.append(" on:").append(mOnTimeThisScan).append(",").append(mOnTimeScan); 2478 sb.append(",").append(mOnTime); 2479 } 2480 if (mTxTime != 0) { 2481 sb.append(" tx:").append(mTxTimeThisScan).append(",").append(mTxTimeScan); 2482 sb.append(",").append(mTxTime); 2483 } 2484 if (mRxTime != 0) { 2485 sb.append(" rx:").append(mRxTimeThisScan).append(",").append(mRxTimeScan); 2486 sb.append(",").append(mRxTime); 2487 } 2488 break; 2489 case WifiMonitor.NETWORK_CONNECTION_EVENT: 2490 sb.append(" "); 2491 sb.append(Integer.toString(msg.arg1)); 2492 sb.append(" "); 2493 sb.append(Integer.toString(msg.arg2)); 2494 sb.append(" ").append(mLastBssid); 2495 sb.append(" nid=").append(mLastNetworkId); 2496 config = getCurrentWifiConfiguration(); 2497 if (config != null) { 2498 sb.append(" ").append(config.configKey()); 2499 } 2500 break; 2501 case CMD_TARGET_BSSID: 2502 case CMD_ASSOCIATED_BSSID: 2503 sb.append(" "); 2504 sb.append(Integer.toString(msg.arg1)); 2505 sb.append(" "); 2506 sb.append(Integer.toString(msg.arg2)); 2507 if (msg.obj != null) { 2508 sb.append(" BSSID=").append((String)msg.obj); 2509 } 2510 if (mTargetRoamBSSID != null) { 2511 sb.append(" Target=").append(mTargetRoamBSSID); 2512 } 2513 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2514 break; 2515 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 2516 if (msg.obj != null) { 2517 sb.append(" ").append((String)msg.obj); 2518 } 2519 sb.append(" nid=").append(msg.arg1); 2520 sb.append(" reason=").append(msg.arg2); 2521 if (mLastBssid != null) { 2522 sb.append(" lastbssid=").append(mLastBssid); 2523 } 2524 if (mWifiInfo.getFrequency() != -1) { 2525 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2526 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2527 } 2528 if (linkDebouncing) { 2529 sb.append(" debounce"); 2530 } 2531 break; 2532 case WifiMonitor.SSID_TEMP_DISABLED: 2533 case WifiMonitor.SSID_REENABLED: 2534 sb.append(" nid=").append(msg.arg1); 2535 if (msg.obj != null) { 2536 sb.append(" ").append((String)msg.obj); 2537 } 2538 config = getCurrentWifiConfiguration(); 2539 if (config != null) { 2540 sb.append(" cur=").append(config.configKey()); 2541 sb.append(" ajst=").append(config.autoJoinStatus); 2542 if (config.selfAdded) { 2543 sb.append(" selfAdded"); 2544 } 2545 if (config.status != 0) { 2546 sb.append(" st=").append(config.status); 2547 sb.append(" rs=").append(config.disableReason); 2548 } 2549 if (config.lastConnected != 0) { 2550 now = System.currentTimeMillis(); 2551 sb.append(" lastconn=").append(now - config.lastConnected).append("(ms)"); 2552 } 2553 if (mLastBssid != null) { 2554 sb.append(" lastbssid=").append(mLastBssid); 2555 } 2556 if (mWifiInfo.getFrequency() != -1) { 2557 sb.append(" freq=").append(mWifiInfo.getFrequency()); 2558 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2559 sb.append(" bssid=").append(mWifiInfo.getBSSID()); 2560 } 2561 } 2562 break; 2563 case CMD_RSSI_POLL: 2564 case CMD_UNWANTED_NETWORK: 2565 case WifiManager.RSSI_PKTCNT_FETCH: 2566 sb.append(" "); 2567 sb.append(Integer.toString(msg.arg1)); 2568 sb.append(" "); 2569 sb.append(Integer.toString(msg.arg2)); 2570 if (mWifiInfo.getSSID() != null) 2571 if (mWifiInfo.getSSID() != null) 2572 sb.append(" ").append(mWifiInfo.getSSID()); 2573 if (mWifiInfo.getBSSID() != null) 2574 sb.append(" ").append(mWifiInfo.getBSSID()); 2575 sb.append(" rssi=").append(mWifiInfo.getRssi()); 2576 sb.append(" f=").append(mWifiInfo.getFrequency()); 2577 sb.append(" sc=").append(mWifiInfo.score); 2578 sb.append(" link=").append(mWifiInfo.getLinkSpeed()); 2579 sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate)); 2580 sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate)); 2581 sb.append(String.format(" %.1f ", mWifiInfo.txBadRate)); 2582 sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate)); 2583 report = reportOnTime(); 2584 if (report != null) { 2585 sb.append(" ").append(report); 2586 } 2587 if (wifiScoringReport != null) { 2588 sb.append(wifiScoringReport); 2589 } 2590 break; 2591 case CMD_AUTO_CONNECT: 2592 case WifiManager.CONNECT_NETWORK: 2593 sb.append(" "); 2594 sb.append(Integer.toString(msg.arg1)); 2595 sb.append(" "); 2596 sb.append(Integer.toString(msg.arg2)); 2597 config = (WifiConfiguration) msg.obj; 2598 if (config != null) { 2599 sb.append(" ").append(config.configKey()); 2600 if (config.visibility != null) { 2601 sb.append(" [").append(config.visibility.num24); 2602 sb.append(" ,").append(config.visibility.rssi24); 2603 sb.append(" ;").append(config.visibility.num5); 2604 sb.append(" ,").append(config.visibility.rssi5).append("]"); 2605 } 2606 } 2607 if (mTargetRoamBSSID != null) { 2608 sb.append(" ").append(mTargetRoamBSSID); 2609 } 2610 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2611 break; 2612 case CMD_AUTO_ROAM: 2613 sb.append(" "); 2614 sb.append(Integer.toString(msg.arg1)); 2615 sb.append(" "); 2616 sb.append(Integer.toString(msg.arg2)); 2617 ScanResult result = (ScanResult)msg.obj; 2618 if (result != null) { 2619 now = System.currentTimeMillis(); 2620 sb.append(" bssid=").append(result.BSSID); 2621 sb.append(" rssi=").append(result.level); 2622 sb.append(" freq=").append(result.frequency); 2623 if (result.seen > 0 && result.seen < now) { 2624 sb.append(" seen=").append(now - result.seen); 2625 } else { 2626 // Somehow the timestamp for this scan result is inconsistent 2627 sb.append(" !seen=").append(result.seen); 2628 } 2629 } 2630 if (mTargetRoamBSSID != null) { 2631 sb.append(" ").append(mTargetRoamBSSID); 2632 } 2633 sb.append(" roam=").append(Integer.toString(mAutoRoaming)); 2634 sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); 2635 break; 2636 case CMD_ADD_OR_UPDATE_NETWORK: 2637 sb.append(" "); 2638 sb.append(Integer.toString(msg.arg1)); 2639 sb.append(" "); 2640 sb.append(Integer.toString(msg.arg2)); 2641 if (msg.obj != null) { 2642 config = (WifiConfiguration)msg.obj; 2643 sb.append(" ").append(config.configKey()); 2644 sb.append(" prio=").append(config.priority); 2645 sb.append(" status=").append(config.status); 2646 if (config.BSSID != null) { 2647 sb.append(" ").append(config.BSSID); 2648 } 2649 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 2650 if (curConfig != null) { 2651 if (curConfig.configKey().equals(config.configKey())) { 2652 sb.append(" is current"); 2653 } else { 2654 sb.append(" current=").append(curConfig.configKey()); 2655 sb.append(" prio=").append(curConfig.priority); 2656 sb.append(" status=").append(curConfig.status); 2657 } 2658 } 2659 } 2660 break; 2661 case WifiManager.DISABLE_NETWORK: 2662 case CMD_ENABLE_NETWORK: 2663 sb.append(" "); 2664 sb.append(Integer.toString(msg.arg1)); 2665 sb.append(" "); 2666 sb.append(Integer.toString(msg.arg2)); 2667 String key = mWifiConfigStore.getLastSelectedConfiguration(); 2668 if (key != null) { 2669 sb.append(" last=").append(key); 2670 } 2671 config = mWifiConfigStore.getWifiConfiguration(msg.arg1); 2672 if (config != null && (key == null || !config.configKey().equals(key))) { 2673 sb.append(" target=").append(key); 2674 } 2675 break; 2676 case CMD_GET_CONFIGURED_NETWORKS: 2677 sb.append(" "); 2678 sb.append(Integer.toString(msg.arg1)); 2679 sb.append(" "); 2680 sb.append(Integer.toString(msg.arg2)); 2681 sb.append(" num=").append(mWifiConfigStore.getConfiguredNetworksSize()); 2682 break; 2683 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 2684 sb.append(" "); 2685 sb.append(Integer.toString(msg.arg1)); 2686 sb.append(" "); 2687 sb.append(Integer.toString(msg.arg2)); 2688 if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 2689 sb.append(" OK "); 2690 } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { 2691 sb.append(" FAIL "); 2692 } 2693 if (mLinkProperties != null) { 2694 if (mLinkProperties.hasIPv4Address()) { 2695 sb.append(" v4"); 2696 } 2697 if (mLinkProperties.hasGlobalIPv6Address()) { 2698 sb.append(" v6"); 2699 } 2700 if (mLinkProperties.hasIPv4DefaultRoute()) { 2701 sb.append(" v4r"); 2702 } 2703 if (mLinkProperties.hasIPv6DefaultRoute()) { 2704 sb.append(" v6r"); 2705 } 2706 if (mLinkProperties.hasIPv4DnsServer()) { 2707 sb.append(" v4dns"); 2708 } 2709 if (mLinkProperties.hasIPv6DnsServer()) { 2710 sb.append(" v6dns"); 2711 } 2712 } 2713 break; 2714 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 2715 sb.append(" "); 2716 sb.append(Integer.toString(msg.arg1)); 2717 sb.append(" "); 2718 sb.append(Integer.toString(msg.arg2)); 2719 if (msg.obj != null) { 2720 NetworkInfo info = (NetworkInfo)msg.obj; 2721 NetworkInfo.State state = info.getState(); 2722 NetworkInfo.DetailedState detailedState = info.getDetailedState(); 2723 if (state != null) { 2724 sb.append(" st=").append(state); 2725 } 2726 if (detailedState != null) { 2727 sb.append("/").append(detailedState); 2728 } 2729 } 2730 break; 2731 case CMD_IP_CONFIGURATION_LOST: 2732 int count = -1; 2733 WifiConfiguration c = getCurrentWifiConfiguration(); 2734 if (c != null) count = c.numIpConfigFailures; 2735 sb.append(" "); 2736 sb.append(Integer.toString(msg.arg1)); 2737 sb.append(" "); 2738 sb.append(Integer.toString(msg.arg2)); 2739 sb.append(" failures: "); 2740 sb.append(Integer.toString(count)); 2741 sb.append("/"); 2742 sb.append(Integer.toString(mWifiConfigStore.getMaxDhcpRetries())); 2743 if (mWifiInfo.getBSSID() != null) { 2744 sb.append(mWifiInfo.getBSSID()); 2745 } 2746 if (c.scanResultCache != null) { 2747 for (ScanResult r : c.scanResultCache.values()) { 2748 if (r.BSSID.equals(mWifiInfo.getBSSID())) { 2749 sb.append(" ipfail=").append(r.numIpConfigFailures); 2750 sb.append(",st=").append(r.autoJoinStatus); 2751 } 2752 } 2753 } 2754 break; 2755 case CMD_UPDATE_LINKPROPERTIES: 2756 sb.append(" "); 2757 sb.append(Integer.toString(msg.arg1)); 2758 sb.append(" "); 2759 sb.append(Integer.toString(msg.arg2)); 2760 if (mLinkProperties != null) { 2761 if (mLinkProperties.hasIPv4Address()) { 2762 sb.append(" v4"); 2763 } 2764 if (mLinkProperties.hasGlobalIPv6Address()) { 2765 sb.append(" v6"); 2766 } 2767 if (mLinkProperties.hasIPv4DefaultRoute()) { 2768 sb.append(" v4r"); 2769 } 2770 if (mLinkProperties.hasIPv6DefaultRoute()) { 2771 sb.append(" v6r"); 2772 } 2773 if (mLinkProperties.hasIPv4DnsServer()) { 2774 sb.append(" v4dns"); 2775 } 2776 if (mLinkProperties.hasIPv6DnsServer()) { 2777 sb.append(" v6dns"); 2778 } 2779 } 2780 break; 2781 case CMD_SET_COUNTRY_CODE: 2782 sb.append(" "); 2783 sb.append(Integer.toString(msg.arg1)); 2784 sb.append(" "); 2785 sb.append(Integer.toString(msg.arg2)); 2786 if (msg.obj != null) { 2787 sb.append(" ").append((String)msg.obj); 2788 } 2789 break; 2790 case CMD_ROAM_WATCHDOG_TIMER: 2791 sb.append(" "); 2792 sb.append(Integer.toString(msg.arg1)); 2793 sb.append(" "); 2794 sb.append(Integer.toString(msg.arg2)); 2795 sb.append(" cur=").append(roamWatchdogCount); 2796 break; 2797 case CMD_DISCONNECTING_WATCHDOG_TIMER: 2798 sb.append(" "); 2799 sb.append(Integer.toString(msg.arg1)); 2800 sb.append(" "); 2801 sb.append(Integer.toString(msg.arg2)); 2802 sb.append(" cur=").append(disconnectingWatchdogCount); 2803 break; 2804 default: 2805 sb.append(" "); 2806 sb.append(Integer.toString(msg.arg1)); 2807 sb.append(" "); 2808 sb.append(Integer.toString(msg.arg2)); 2809 break; 2810 } 2811 2812 return sb.toString(); 2813 } 2814 2815 private void handleScreenStateChanged(boolean screenOn, boolean startBackgroundScanIfNeeded) { 2816 mScreenOn = screenOn; 2817 if (PDBG) { 2818 loge(" handleScreenStateChanged Enter: screenOn=" + screenOn 2819 + " mCurrentScanAlarmMs = " + Long.toString(mCurrentScanAlarmMs) 2820 + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt 2821 + " state " + getCurrentState().getName() 2822 + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); 2823 } 2824 enableRssiPolling(screenOn); 2825 if (screenOn) enableAllNetworks(); 2826 if (mUserWantsSuspendOpt.get()) { 2827 if (screenOn) { 2828 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); 2829 } else { 2830 // Allow 2s for suspend optimizations to be set 2831 mSuspendWakeLock.acquire(2000); 2832 sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); 2833 } 2834 } 2835 mScreenBroadcastReceived.set(true); 2836 2837 getWifiLinkLayerStats(false); 2838 mOnTimeScreenStateChange = mOnTime; 2839 lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate; 2840 2841 if (screenOn) { 2842 clearBlacklist(); 2843 2844 fullBandConnectedTimeIntervalMilli = mWifiConfigStore.associatedPartialScanPeriodMilli; 2845 // Start the scan alarm so as to enable autojoin 2846 if (getCurrentState() == mConnectedState 2847 && mWifiConfigStore.enableAutoJoinScanWhenAssociated) { 2848 mCurrentScanAlarmMs = mWifiConfigStore.associatedPartialScanPeriodMilli; 2849 // Scan after 200ms 2850 setScanAlarm(true, 200); 2851 } else if (getCurrentState() == mDisconnectedState) { 2852 mCurrentScanAlarmMs = mDisconnectedScanPeriodMs; 2853 // Scan after 200ms 2854 setScanAlarm(true, 200); 2855 } 2856 } else { 2857 setScanAlarm(false, 0); 2858 } 2859 2860 if (mBackgroundScanSupported) { 2861 mEnableBackgroundScan = (screenOn == false); 2862 } 2863 2864 if (DBG) logd("backgroundScan enabled=" + mEnableBackgroundScan 2865 + " startBackgroundScanIfNeeded:" + startBackgroundScanIfNeeded); 2866 2867 if (startBackgroundScanIfNeeded) { 2868 mWifiNative.enableBackgroundScan(mEnableBackgroundScan); 2869 } 2870 2871 if (DBG) log("handleScreenStateChanged Exit: " + screenOn); 2872 } 2873 2874 private void checkAndSetConnectivityInstance() { 2875 if (mCm == null) { 2876 mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); 2877 } 2878 } 2879 2880 private boolean startTethering(ArrayList<String> available) { 2881 2882 boolean wifiAvailable = false; 2883 2884 checkAndSetConnectivityInstance(); 2885 2886 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 2887 2888 for (String intf : available) { 2889 for (String regex : wifiRegexs) { 2890 if (intf.matches(regex)) { 2891 2892 InterfaceConfiguration ifcg = null; 2893 try { 2894 ifcg = mNwService.getInterfaceConfig(intf); 2895 if (ifcg != null) { 2896 /* IP/netmask: 192.168.43.1/255.255.255.0 */ 2897 ifcg.setLinkAddress(new LinkAddress( 2898 NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); 2899 ifcg.setInterfaceUp(); 2900 2901 mNwService.setInterfaceConfig(intf, ifcg); 2902 } 2903 } catch (Exception e) { 2904 loge("Error configuring interface " + intf + ", :" + e); 2905 return false; 2906 } 2907 2908 if(mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 2909 loge("Error tethering on " + intf); 2910 return false; 2911 } 2912 mTetherInterfaceName = intf; 2913 return true; 2914 } 2915 } 2916 } 2917 // We found no interfaces to tether 2918 return false; 2919 } 2920 2921 private void stopTethering() { 2922 2923 checkAndSetConnectivityInstance(); 2924 2925 /* Clear the interface config to allow dhcp correctly configure new 2926 ip settings */ 2927 InterfaceConfiguration ifcg = null; 2928 try { 2929 ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); 2930 if (ifcg != null) { 2931 ifcg.setLinkAddress( 2932 new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); 2933 mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); 2934 } 2935 } catch (Exception e) { 2936 loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); 2937 } 2938 2939 if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { 2940 loge("Untether initiate failed!"); 2941 } 2942 } 2943 2944 private boolean isWifiTethered(ArrayList<String> active) { 2945 2946 checkAndSetConnectivityInstance(); 2947 2948 String[] wifiRegexs = mCm.getTetherableWifiRegexs(); 2949 for (String intf : active) { 2950 for (String regex : wifiRegexs) { 2951 if (intf.matches(regex)) { 2952 return true; 2953 } 2954 } 2955 } 2956 // We found no interfaces that are tethered 2957 return false; 2958 } 2959 2960 /** 2961 * Set the country code from the system setting value, if any. 2962 */ 2963 private void setCountryCode() { 2964 String countryCode = Settings.Global.getString(mContext.getContentResolver(), 2965 Settings.Global.WIFI_COUNTRY_CODE); 2966 if (countryCode != null && !countryCode.isEmpty()) { 2967 setCountryCode(countryCode, false); 2968 } else { 2969 //use driver default 2970 } 2971 } 2972 2973 /** 2974 * Set the frequency band from the system setting value, if any. 2975 */ 2976 private void setFrequencyBand() { 2977 int band = Settings.Global.getInt(mContext.getContentResolver(), 2978 Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); 2979 setFrequencyBand(band, false); 2980 } 2981 2982 private void setSuspendOptimizationsNative(int reason, boolean enabled) { 2983 if (DBG) { 2984 log("setSuspendOptimizationsNative: " + reason + " " + enabled 2985 + " -want " + mUserWantsSuspendOpt.get() 2986 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 2987 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 2988 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 2989 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 2990 } 2991 //mWifiNative.setSuspendOptimizations(enabled); 2992 2993 if (enabled) { 2994 mSuspendOptNeedsDisabled &= ~reason; 2995 /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ 2996 if (mSuspendOptNeedsDisabled == 0 && mUserWantsSuspendOpt.get()) { 2997 if (DBG) { 2998 log("setSuspendOptimizationsNative do it " + reason + " " + enabled 2999 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 3000 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 3001 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 3002 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 3003 } 3004 mWifiNative.setSuspendOptimizations(true); 3005 } 3006 } else { 3007 mSuspendOptNeedsDisabled |= reason; 3008 mWifiNative.setSuspendOptimizations(false); 3009 } 3010 } 3011 3012 private void setSuspendOptimizations(int reason, boolean enabled) { 3013 if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); 3014 if (enabled) { 3015 mSuspendOptNeedsDisabled &= ~reason; 3016 } else { 3017 mSuspendOptNeedsDisabled |= reason; 3018 } 3019 if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); 3020 } 3021 3022 private void setWifiState(int wifiState) { 3023 final int previousWifiState = mWifiState.get(); 3024 3025 try { 3026 if (wifiState == WIFI_STATE_ENABLED) { 3027 mBatteryStats.noteWifiOn(); 3028 } else if (wifiState == WIFI_STATE_DISABLED) { 3029 mBatteryStats.noteWifiOff(); 3030 } 3031 } catch (RemoteException e) { 3032 loge("Failed to note battery stats in wifi"); 3033 } 3034 3035 mWifiState.set(wifiState); 3036 3037 if (DBG) log("setWifiState: " + syncGetWifiStateByName()); 3038 3039 final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION); 3040 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3041 intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState); 3042 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState); 3043 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3044 } 3045 3046 private void setWifiApState(int wifiApState) { 3047 final int previousWifiApState = mWifiApState.get(); 3048 3049 try { 3050 if (wifiApState == WIFI_AP_STATE_ENABLED) { 3051 mBatteryStats.noteWifiOn(); 3052 } else if (wifiApState == WIFI_AP_STATE_DISABLED) { 3053 mBatteryStats.noteWifiOff(); 3054 } 3055 } catch (RemoteException e) { 3056 loge("Failed to note battery stats in wifi"); 3057 } 3058 3059 // Update state 3060 mWifiApState.set(wifiApState); 3061 3062 if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); 3063 3064 final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); 3065 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3066 intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); 3067 intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); 3068 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3069 } 3070 3071 /* 3072 void ageOutScanResults(int age) { 3073 synchronized(mScanResultCache) { 3074 // Trim mScanResults, which prevent WifiStateMachine to return 3075 // obsolete scan results to queriers 3076 long now = System.CurrentTimeMillis(); 3077 for (int i = 0; i < mScanResults.size(); i++) { 3078 ScanResult result = mScanResults.get(i); 3079 if ((result.seen > now || (now - result.seen) > age)) { 3080 mScanResults.remove(i); 3081 } 3082 } 3083 } 3084 }*/ 3085 3086 private static final String ID_STR = "id="; 3087 private static final String BSSID_STR = "bssid="; 3088 private static final String FREQ_STR = "freq="; 3089 private static final String LEVEL_STR = "level="; 3090 private static final String TSF_STR = "tsf="; 3091 private static final String FLAGS_STR = "flags="; 3092 private static final String SSID_STR = "ssid="; 3093 private static final String DELIMITER_STR = "===="; 3094 private static final String END_STR = "####"; 3095 3096 int emptyScanResultCount = 0; 3097 3098 /** 3099 * Format: 3100 * 3101 * id=1 3102 * bssid=68:7f:76:d7:1a:6e 3103 * freq=2412 3104 * level=-44 3105 * tsf=1344626243700342 3106 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3107 * ssid=zfdy 3108 * ==== 3109 * id=2 3110 * bssid=68:5f:74:d7:1a:6f 3111 * freq=5180 3112 * level=-73 3113 * tsf=1344626243700373 3114 * flags=[WPA2-PSK-CCMP][WPS][ESS] 3115 * ssid=zuby 3116 * ==== 3117 */ 3118 private void setScanResults() { 3119 mNumScanResultsKnown = 0; 3120 mNumScanResultsReturned = 0; 3121 String bssid = ""; 3122 int level = 0; 3123 int freq = 0; 3124 long tsf = 0; 3125 String flags = ""; 3126 WifiSsid wifiSsid = null; 3127 String scanResults; 3128 String tmpResults; 3129 StringBuffer scanResultsBuf = new StringBuffer(); 3130 int sid = 0; 3131 3132 while (true) { 3133 tmpResults = mWifiNative.scanResults(sid); 3134 if (TextUtils.isEmpty(tmpResults)) break; 3135 scanResultsBuf.append(tmpResults); 3136 scanResultsBuf.append("\n"); 3137 String[] lines = tmpResults.split("\n"); 3138 sid = -1; 3139 for (int i=lines.length - 1; i >= 0; i--) { 3140 if (lines[i].startsWith(END_STR)) { 3141 break; 3142 } else if (lines[i].startsWith(ID_STR)) { 3143 try { 3144 sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; 3145 } catch (NumberFormatException e) { 3146 // Nothing to do 3147 } 3148 break; 3149 } 3150 } 3151 if (sid == -1) break; 3152 } 3153 3154 // Age out scan results, we return all scan results found in the last 12 seconds, 3155 // and NOT all scan results since last scan. 3156 // ageOutScanResults(12000); 3157 3158 scanResults = scanResultsBuf.toString(); 3159 if (TextUtils.isEmpty(scanResults)) { 3160 emptyScanResultCount++; 3161 if (emptyScanResultCount > 10) { 3162 // If we got too many empty scan results, the current scan cache is stale, 3163 // hence clear it. 3164 mScanResults = new ArrayList<ScanResult>(); 3165 } 3166 return; 3167 } 3168 3169 emptyScanResultCount = 0; 3170 3171 // note that all these splits and substrings keep references to the original 3172 // huge string buffer while the amount we really want is generally pretty small 3173 // so make copies instead (one example b/11087956 wasted 400k of heap here). 3174 synchronized(mScanResultCache) { 3175 mScanResults = new ArrayList<ScanResult>(); 3176 String[] lines = scanResults.split("\n"); 3177 final int bssidStrLen = BSSID_STR.length(); 3178 final int flagLen = FLAGS_STR.length(); 3179 3180 for (String line : lines) { 3181 if (line.startsWith(BSSID_STR)) { 3182 bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); 3183 } else if (line.startsWith(FREQ_STR)) { 3184 try { 3185 freq = Integer.parseInt(line.substring(FREQ_STR.length())); 3186 } catch (NumberFormatException e) { 3187 freq = 0; 3188 } 3189 } else if (line.startsWith(LEVEL_STR)) { 3190 try { 3191 level = Integer.parseInt(line.substring(LEVEL_STR.length())); 3192 /* some implementations avoid negative values by adding 256 3193 * so we need to adjust for that here. 3194 */ 3195 if (level > 0) level -= 256; 3196 } catch(NumberFormatException e) { 3197 level = 0; 3198 } 3199 } else if (line.startsWith(TSF_STR)) { 3200 try { 3201 tsf = Long.parseLong(line.substring(TSF_STR.length())); 3202 } catch (NumberFormatException e) { 3203 tsf = 0; 3204 } 3205 } else if (line.startsWith(FLAGS_STR)) { 3206 flags = new String(line.getBytes(), flagLen, line.length() - flagLen); 3207 } else if (line.startsWith(SSID_STR)) { 3208 wifiSsid = WifiSsid.createFromAsciiEncoded( 3209 line.substring(SSID_STR.length())); 3210 } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { 3211 if (bssid != null) { 3212 String ssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; 3213 String key = bssid + ssid; 3214 ScanResult scanResult = mScanResultCache.get(key); 3215 if (scanResult != null) { 3216 // TODO: average the RSSI, instead of overwriting it 3217 scanResult.level = level; 3218 scanResult.wifiSsid = wifiSsid; 3219 // Keep existing API 3220 scanResult.SSID = (wifiSsid != null) ? wifiSsid.toString() : 3221 WifiSsid.NONE; 3222 scanResult.capabilities = flags; 3223 scanResult.frequency = freq; 3224 scanResult.timestamp = tsf; 3225 scanResult.seen = System.currentTimeMillis(); 3226 } else { 3227 scanResult = 3228 new ScanResult( 3229 wifiSsid, bssid, flags, level, freq, tsf); 3230 scanResult.seen = System.currentTimeMillis(); 3231 mScanResultCache.put(key, scanResult); 3232 } 3233 mNumScanResultsReturned ++; // Keep track of how many scan results we got 3234 // as part of this scan's processing 3235 mScanResults.add(scanResult); 3236 } 3237 bssid = null; 3238 level = 0; 3239 freq = 0; 3240 tsf = 0; 3241 flags = ""; 3242 wifiSsid = null; 3243 } 3244 } 3245 } 3246 boolean attemptAutoJoin = true; 3247 SupplicantState state = mWifiInfo.getSupplicantState(); 3248 if (getCurrentState() == mRoamingState 3249 || getCurrentState() == mObtainingIpState 3250 || getCurrentState() == mScanModeState 3251 || getCurrentState() == mDisconnectingState 3252 || (getCurrentState() == mConnectedState 3253 && !mWifiConfigStore.enableAutoJoinWhenAssociated) 3254 || linkDebouncing 3255 || state == SupplicantState.ASSOCIATING 3256 || state == SupplicantState.AUTHENTICATING 3257 || state == SupplicantState.FOUR_WAY_HANDSHAKE 3258 || state == SupplicantState.GROUP_HANDSHAKE) { 3259 // Dont attempt auto-joining again while we are already attempting to join 3260 // and/or obtaining Ip address 3261 attemptAutoJoin = false; 3262 } 3263 if (DBG) { 3264 loge("wifi setScanResults state" + getCurrentState() 3265 + " sup_state=" + state 3266 + " debouncing=" + linkDebouncing); 3267 } 3268 if (attemptAutoJoin) { 3269 messageHandlingStatus = MESSAGE_HANDLING_STATUS_PROCESSED; 3270 } 3271 // Loose last selected configuration if we have been disconnected for 30 minutes 3272 if (getDisconnectedTimeMilli() > 1000 * 60 * 30) { 3273 mWifiConfigStore.setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 3274 } 3275 3276 if (mWifiConfigStore.enableAutoJoinWhenAssociated) { 3277 synchronized(mScanResultCache) { 3278 // AutoJoincontroller will directly acces the scan result list and update it with 3279 // ScanResult status 3280 mNumScanResultsKnown = mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); 3281 } 3282 } 3283 if (linkDebouncing) { 3284 // If debouncing, we dont re-select a SSID or BSSID hence 3285 // there is no need to call the network selection code 3286 // in WifiAutoJoinController, instead, 3287 // just try to reconnect to the same SSID by triggering a roam 3288 sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); 3289 } 3290 } 3291 3292 /* 3293 * Fetch RSSI, linkspeed, and frequency on current connection 3294 */ 3295 private void fetchRssiLinkSpeedAndFrequencyNative() { 3296 int newRssi = -1; 3297 int newLinkSpeed = -1; 3298 int newFrequency = -1; 3299 3300 String signalPoll = mWifiNative.signalPoll(); 3301 3302 if (signalPoll != null) { 3303 String[] lines = signalPoll.split("\n"); 3304 for (String line : lines) { 3305 String[] prop = line.split("="); 3306 if (prop.length < 2) continue; 3307 try { 3308 if (prop[0].equals("RSSI")) { 3309 newRssi = Integer.parseInt(prop[1]); 3310 } else if (prop[0].equals("LINKSPEED")) { 3311 newLinkSpeed = Integer.parseInt(prop[1]); 3312 } else if (prop[0].equals("FREQUENCY")) { 3313 newFrequency = Integer.parseInt(prop[1]); 3314 } 3315 } catch (NumberFormatException e) { 3316 //Ignore, defaults on rssi and linkspeed are assigned 3317 } 3318 } 3319 } 3320 3321 if (PDBG) { 3322 loge("fetchRssiLinkSpeedAndFrequencyNative rssi=" 3323 + Integer.toString(newRssi) + " linkspeed=" 3324 + Integer.toString(newLinkSpeed)); 3325 } 3326 3327 if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { 3328 // screen out invalid values 3329 /* some implementations avoid negative values by adding 256 3330 * so we need to adjust for that here. 3331 */ 3332 if (newRssi > 0) newRssi -= 256; 3333 mWifiInfo.setRssi(newRssi); 3334 /* 3335 * Rather then sending the raw RSSI out every time it 3336 * changes, we precalculate the signal level that would 3337 * be displayed in the status bar, and only send the 3338 * broadcast if that much more coarse-grained number 3339 * changes. This cuts down greatly on the number of 3340 * broadcasts, at the cost of not informing others 3341 * interested in RSSI of all the changes in signal 3342 * level. 3343 */ 3344 int newSignalLevel = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS); 3345 if (newSignalLevel != mLastSignalLevel) { 3346 sendRssiChangeBroadcast(newRssi); 3347 } 3348 mLastSignalLevel = newSignalLevel; 3349 } else { 3350 mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); 3351 } 3352 3353 if (newLinkSpeed != -1) { 3354 mWifiInfo.setLinkSpeed(newLinkSpeed); 3355 } 3356 if (newFrequency > 0) { 3357 if (ScanResult.is5GHz(newFrequency)) { 3358 mWifiConnectionStatistics.num5GhzConnected++; 3359 } 3360 if (ScanResult.is24GHz(newFrequency)) { 3361 mWifiConnectionStatistics.num24GhzConnected++; 3362 } 3363 mWifiInfo.setFrequency(newFrequency); 3364 } 3365 mWifiConfigStore.updateConfiguration(mWifiInfo); 3366 } 3367 3368 /** 3369 * Determine if we need to switch network: 3370 * - the delta determine the urgency to switch and/or or the expected evilness of the disruption 3371 * - match the uregncy of the switch versus the packet usage at the interface 3372 */ 3373 boolean shouldSwitchNetwork(int networkDelta) { 3374 int delta; 3375 if (networkDelta <= 0) { 3376 return false; 3377 } 3378 delta = networkDelta; 3379 if (mWifiInfo != null) { 3380 if (!mWifiConfigStore.enableAutoJoinWhenAssociated 3381 && mWifiInfo.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 3382 // If AutoJoin while associated is not enabled, 3383 // we should never switch network when already associated 3384 delta = -1000; 3385 } else { 3386 // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present 3387 // TODO: at the interface. We should also discriminate between ucast and mcast, 3388 // TODO: since the rxSuccessRate include all the bonjour and Ipv6 3389 // TODO: broadcasts 3390 if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { 3391 delta -= 999; 3392 } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { 3393 delta -= 6; 3394 } 3395 loge("WifiStateMachine shouldSwitchNetwork " 3396 + " txSuccessRate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3397 + " rxSuccessRate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3398 + " delta " + networkDelta + " -> " + delta); 3399 } 3400 } else { 3401 loge("WifiStateMachine shouldSwitchNetwork " 3402 + " delta " + networkDelta + " -> " + delta); 3403 } 3404 if (delta > 0) { 3405 return true; 3406 } 3407 return false; 3408 } 3409 3410 // Polling has completed, hence we wont have a score anymore 3411 private void cleanWifiScore() { 3412 mWifiInfo.txBadRate = 0; 3413 mWifiInfo.txSuccessRate = 0; 3414 mWifiInfo.txRetriesRate = 0; 3415 mWifiInfo.rxSuccessRate = 0; 3416 } 3417 3418 int mBadLinkspeedcount = 0; 3419 3420 // For debug, provide information about the last scoring operation 3421 String wifiScoringReport = null; 3422 private void calculateWifiScore(WifiLinkLayerStats stats) { 3423 StringBuilder sb = new StringBuilder(); 3424 if (stats == null || mWifiLinkLayerStatsSupported <= 0) { 3425 long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); 3426 long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); 3427 mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); 3428 } else { 3429 sb.append(" stats"); 3430 mWifiInfo.updatePacketRates(stats); 3431 } 3432 int score = 56; // Starting score, temporarily hardcoded in between 50 and 60 3433 boolean isBadLinkspeed = (mWifiInfo.is24GHz() 3434 && mWifiInfo.getLinkSpeed() < mWifiConfigStore.badLinkSpeed24) 3435 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3436 < mWifiConfigStore.badLinkSpeed5); 3437 boolean isGoodLinkspeed = (mWifiInfo.is24GHz() 3438 && mWifiInfo.getLinkSpeed() >= mWifiConfigStore.goodLinkSpeed24) 3439 || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() 3440 >= mWifiConfigStore.goodLinkSpeed5); 3441 3442 if (isBadLinkspeed) { 3443 if (mBadLinkspeedcount < 6) 3444 mBadLinkspeedcount++; 3445 } else { 3446 if (mBadLinkspeedcount > 0) 3447 mBadLinkspeedcount--; 3448 } 3449 3450 if (isBadLinkspeed) sb.append(" bl(").append(mBadLinkspeedcount).append(")"); 3451 if (isGoodLinkspeed) sb.append(" gl"); 3452 3453 /** 3454 * We want to make sure that we use the 24GHz RSSI thresholds is 3455 * there are 2.4GHz scan results 3456 * otherwise we end up lowering the score based on 5GHz values 3457 * which may cause a switch to LTE before roaming has a chance to try 2.4GHz 3458 * We also might unblacklist the configuation based on 2.4GHz 3459 * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good 3460 */ 3461 boolean use24Thresholds = false; 3462 boolean homeNetworkBoost = false; 3463 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 3464 if (currentConfiguration != null 3465 && currentConfiguration.scanResultCache != null) { 3466 currentConfiguration.setVisibility(12000); 3467 if (currentConfiguration.visibility != null) { 3468 if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI 3469 && currentConfiguration.visibility.rssi24 3470 >= (currentConfiguration.visibility.rssi5-2)) { 3471 use24Thresholds = true; 3472 } 3473 } 3474 if (currentConfiguration.scanResultCache.size() <= 6 3475 && currentConfiguration.allowedKeyManagement.cardinality() == 1 3476 && currentConfiguration.allowedKeyManagement. 3477 get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { 3478 // A PSK network with less than 6 known BSSIDs 3479 // This is most likely a home network and thus we want to stick to wifi more 3480 homeNetworkBoost = true; 3481 } 3482 } 3483 if (homeNetworkBoost) sb.append(" hn"); 3484 if (use24Thresholds) sb.append(" u24"); 3485 3486 int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover 3487 + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); 3488 sb.append(String.format(" rssi=%d ag=%d", rssi, mAggressiveHandover)); 3489 3490 boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); 3491 3492 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24) 3493 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5); 3494 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24) 3495 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5); 3496 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24) 3497 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5); 3498 3499 if (isBadRSSI) sb.append(" br"); 3500 if (isLowRSSI) sb.append(" lr"); 3501 if (isHighRSSI) sb.append(" hr"); 3502 3503 int penalizedDueToUserTriggeredDisconnect = 0; // For debug information 3504 if (currentConfiguration!= null && 3505 (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 5)) { 3506 if (isBadRSSI) { 3507 currentConfiguration.numTicksAtBadRSSI++; 3508 if (currentConfiguration.numTicksAtBadRSSI > 1000) { 3509 // We remained associated for a compound amount of time while passing 3510 // traffic, hence loose the corresponding user triggered disabled stats 3511 if (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0) { 3512 currentConfiguration.numUserTriggeredWifiDisableBadRSSI--; 3513 } 3514 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3515 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3516 } 3517 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3518 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3519 } 3520 currentConfiguration.numTicksAtBadRSSI = 0; 3521 } 3522 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3523 (currentConfiguration.numUserTriggeredWifiDisableBadRSSI > 0 3524 || currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3525 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3526 score = score -5; 3527 penalizedDueToUserTriggeredDisconnect = 1; 3528 sb.append(" p1"); 3529 } 3530 } else if (isLowRSSI) { 3531 currentConfiguration.numTicksAtLowRSSI++; 3532 if (currentConfiguration.numTicksAtLowRSSI > 1000) { 3533 // We remained associated for a compound amount of time while passing 3534 // traffic, hence loose the corresponding user triggered disabled stats 3535 if (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0) { 3536 currentConfiguration.numUserTriggeredWifiDisableLowRSSI--; 3537 } 3538 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3539 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3540 } 3541 currentConfiguration.numTicksAtLowRSSI = 0; 3542 } 3543 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3544 (currentConfiguration.numUserTriggeredWifiDisableLowRSSI > 0 3545 || currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0)) { 3546 score = score -5; 3547 penalizedDueToUserTriggeredDisconnect = 2; 3548 sb.append(" p2"); 3549 } 3550 } else if (!isHighRSSI) { 3551 currentConfiguration.numTicksAtNotHighRSSI++; 3552 if (currentConfiguration.numTicksAtNotHighRSSI > 1000) { 3553 // We remained associated for a compound amount of time while passing 3554 // traffic, hence loose the corresponding user triggered disabled stats 3555 if (currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3556 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI--; 3557 } 3558 currentConfiguration.numTicksAtNotHighRSSI = 0; 3559 } 3560 if (mWifiConfigStore.enableWifiCellularHandoverUserTriggeredAdjustment && 3561 currentConfiguration.numUserTriggeredWifiDisableNotHighRSSI > 0) { 3562 score = score -5; 3563 penalizedDueToUserTriggeredDisconnect = 3; 3564 sb.append(" p3"); 3565 } 3566 } 3567 sb.append(String.format(" ticks %d,%d,%d", currentConfiguration.numTicksAtBadRSSI, 3568 currentConfiguration.numTicksAtLowRSSI, 3569 currentConfiguration.numTicksAtNotHighRSSI)); 3570 } 3571 3572 if (PDBG) { 3573 String rssiStatus = ""; 3574 if (isBadRSSI) rssiStatus += " badRSSI "; 3575 else if (isHighRSSI) rssiStatus += " highRSSI "; 3576 else if (isLowRSSI) rssiStatus += " lowRSSI "; 3577 if (isBadLinkspeed) rssiStatus += " lowSpeed "; 3578 loge("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) 3579 + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) 3580 + " score=" + Integer.toString(mWifiInfo.score) 3581 + rssiStatus 3582 + " -> txbadrate=" + String.format( "%.2f", mWifiInfo.txBadRate ) 3583 + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) 3584 + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) 3585 + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) 3586 + " userTriggerdPenalty" + penalizedDueToUserTriggeredDisconnect); 3587 } 3588 3589 if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) 3590 && (isBadRSSI || isLowRSSI)) { 3591 // Link is stuck 3592 if (mWifiInfo.linkStuckCount < 5) 3593 mWifiInfo.linkStuckCount += 1; 3594 sb.append(String.format(" ls+=%d", mWifiInfo.linkStuckCount)); 3595 if (PDBG) loge(" bad link -> stuck count =" 3596 + Integer.toString(mWifiInfo.linkStuckCount)); 3597 } else if (mWifiInfo.txSuccessRate > 2 || mWifiInfo.txBadRate < 0.1) { 3598 if (mWifiInfo.linkStuckCount > 0) 3599 mWifiInfo.linkStuckCount -= 1; 3600 sb.append(String.format(" ls-=%d", mWifiInfo.linkStuckCount)); 3601 if (PDBG) loge(" good link -> stuck count =" 3602 + Integer.toString(mWifiInfo.linkStuckCount)); 3603 } 3604 3605 sb.append(String.format(" [%d", score)); 3606 3607 if (mWifiInfo.linkStuckCount > 1) { 3608 // Once link gets stuck for more than 3 seconds, start reducing the score 3609 score = score - 2 * (mWifiInfo.linkStuckCount - 1); 3610 } 3611 sb.append(String.format(",%d", score)); 3612 3613 if (isBadLinkspeed) { 3614 // Aggressively drop the score if link speed is bad 3615 score -= 2 * mBadLinkspeedcount; 3616 if (PDBG) { 3617 loge(" isBadLinkspeed ---> count=" + mBadLinkspeedcount 3618 + " score=" + Integer.toString(score)); 3619 } 3620 } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { 3621 score += 4; // So as bad rssi alone dont kill us 3622 } 3623 sb.append(String.format(",%d", score)); 3624 3625 if (isBadRSSI) { 3626 if (mWifiInfo.badRssiCount < 7) 3627 mWifiInfo.badRssiCount += 1; 3628 } else if (isLowRSSI) { 3629 mWifiInfo.lowRssiCount = 1; // Dont increment the lowRssi count above 1 3630 if (mWifiInfo.badRssiCount > 0) { 3631 // Decrement bad Rssi count 3632 mWifiInfo.badRssiCount -= 1; 3633 } 3634 } else { 3635 mWifiInfo.badRssiCount = 0; 3636 mWifiInfo.lowRssiCount = 0; 3637 } 3638 3639 score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount ; 3640 sb.append(String.format(",%d", score)); 3641 3642 if (PDBG) loge(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) 3643 + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) 3644 + " --> score " + Integer.toString(score)); 3645 3646 3647 if (isHighRSSI) { 3648 score += 5; 3649 if (PDBG) loge(" isHighRSSI ---> score=" + Integer.toString(score)); 3650 } 3651 sb.append(String.format(",%d]", score)); 3652 3653 sb.append(String.format(" brc=%d lrc=%d", mWifiInfo.badRssiCount, mWifiInfo.lowRssiCount)); 3654 3655 //sanitize boundaries 3656 if (score > NetworkAgent.WIFI_BASE_SCORE) 3657 score = NetworkAgent.WIFI_BASE_SCORE; 3658 if (score < 0) 3659 score = 0; 3660 3661 //report score 3662 if (score != mWifiInfo.score) { 3663 if (DBG) { 3664 loge("calculateWifiScore() report new score " + Integer.toString(score)); 3665 } 3666 mWifiInfo.score = score; 3667 if (mNetworkAgent != null) { 3668 mNetworkAgent.sendNetworkScore(score); 3669 } 3670 } 3671 wifiScoringReport = sb.toString(); 3672 } 3673 3674 public double getTxPacketRate() { 3675 if (mWifiInfo != null) { 3676 return mWifiInfo.txSuccessRate; 3677 } 3678 return -1; 3679 } 3680 3681 public double getRxPacketRate() { 3682 if (mWifiInfo != null) { 3683 return mWifiInfo.rxSuccessRate; 3684 } 3685 return -1; 3686 } 3687 3688 /** 3689 * Fetch TX packet counters on current connection 3690 */ 3691 private void fetchPktcntNative(RssiPacketCountInfo info) { 3692 String pktcntPoll = mWifiNative.pktcntPoll(); 3693 3694 if (pktcntPoll != null) { 3695 String[] lines = pktcntPoll.split("\n"); 3696 for (String line : lines) { 3697 String[] prop = line.split("="); 3698 if (prop.length < 2) continue; 3699 try { 3700 if (prop[0].equals("TXGOOD")) { 3701 info.txgood = Integer.parseInt(prop[1]); 3702 } else if (prop[0].equals("TXBAD")) { 3703 info.txbad = Integer.parseInt(prop[1]); 3704 } 3705 } catch (NumberFormatException e) { 3706 // Ignore 3707 } 3708 } 3709 } 3710 } 3711 3712 private boolean clearIPv4Address(String iface) { 3713 try { 3714 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 3715 ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); 3716 mNwService.setInterfaceConfig(iface, ifcg); 3717 return true; 3718 } catch (RemoteException e) { 3719 return false; 3720 } 3721 } 3722 3723 private boolean isProvisioned(LinkProperties lp) { 3724 // LinkProperties#isProvisioned returns true even if all we have is an IPv4 address and no 3725 // connectivity. This turns out not to be very useful, because we can't distinguish it from 3726 // a state where we have an IPv4 address assigned to the interface but are still running 3727 // DHCP. 3728 // TODO: Fix LinkProperties and remove this function. 3729 if (mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 3730 return lp.hasIPv4Address(); 3731 } else { 3732 return (lp.hasIPv4Address() && lp.hasIPv4DefaultRoute() && lp.hasIPv4DnsServer()) || 3733 (lp.hasGlobalIPv6Address() && lp.hasIPv6DefaultRoute() && lp.hasIPv6DnsServer()); 3734 } 3735 } 3736 3737 /** 3738 * Updates mLinkProperties by merging information from various sources. 3739 * 3740 * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, 3741 * netlink, static configuration, ...). When one of these sources of information has updated 3742 * link properties, we can't just assign them to mLinkProperties or we'd lose track of the 3743 * information that came from other sources. Instead, when one of those sources has new 3744 * information, we update the object that tracks the information from that source and then 3745 * call this method to apply the change to mLinkProperties. 3746 * 3747 * The information in mLinkProperties is currently obtained as follows: 3748 * - Interface name: set in the constructor. 3749 * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. 3750 * - IPv4 routes, DNS servers, and domains: DHCP. 3751 * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. 3752 * - HTTP proxy: the wifi config store. 3753 */ 3754 private void updateLinkProperties(int reason) { 3755 LinkProperties newLp = new LinkProperties(); 3756 3757 // Interface name and proxy are locally configured. 3758 newLp.setInterfaceName(mInterfaceName); 3759 newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); 3760 3761 // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. 3762 LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); 3763 newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); 3764 for (RouteInfo route : netlinkLinkProperties.getRoutes()) { 3765 newLp.addRoute(route); 3766 } 3767 for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { 3768 newLp.addDnsServer(dns); 3769 } 3770 3771 // IPv4 routes, DNS servers and domains come from mDhcpResults. 3772 synchronized (mDhcpResultsLock) { 3773 // Even when we're using static configuration, we don't need to look at the config 3774 // store, because static IP configuration also populates mDhcpResults. 3775 if ((mDhcpResults != null)) { 3776 for (RouteInfo route : mDhcpResults.getRoutes(mInterfaceName)) { 3777 newLp.addRoute(route); 3778 } 3779 for (InetAddress dns : mDhcpResults.dnsServers) { 3780 newLp.addDnsServer(dns); 3781 } 3782 newLp.setDomains(mDhcpResults.domains); 3783 } 3784 } 3785 3786 final boolean linkChanged = !newLp.equals(mLinkProperties); 3787 final boolean wasProvisioned = isProvisioned(mLinkProperties); 3788 final boolean isProvisioned = isProvisioned(newLp); 3789 final DetailedState detailedState = getNetworkDetailedState(); 3790 3791 if (linkChanged) { 3792 if (DBG) { 3793 log("Link configuration changed for netId: " + mLastNetworkId 3794 + " old: " + mLinkProperties + " new: " + newLp); 3795 } 3796 mLinkProperties = newLp; 3797 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 3798 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 3799 } 3800 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 3801 } 3802 3803 if (DBG) { 3804 StringBuilder sb = new StringBuilder(); 3805 sb.append("updateLinkProperties nid: " + mLastNetworkId); 3806 sb.append(" state: " + detailedState); 3807 sb.append(" reason: " + smToString(reason)); 3808 3809 if (mLinkProperties != null) { 3810 if (mLinkProperties.hasIPv4Address()) { 3811 sb.append(" v4"); 3812 } 3813 if (mLinkProperties.hasGlobalIPv6Address()) { 3814 sb.append(" v6"); 3815 } 3816 if (mLinkProperties.hasIPv4DefaultRoute()) { 3817 sb.append(" v4r"); 3818 } 3819 if (mLinkProperties.hasIPv6DefaultRoute()) { 3820 sb.append(" v6r"); 3821 } 3822 if (mLinkProperties.hasIPv4DnsServer()) { 3823 sb.append(" v4dns"); 3824 } 3825 if (mLinkProperties.hasIPv6DnsServer()) { 3826 sb.append(" v6dns"); 3827 } 3828 if (isProvisioned) { 3829 sb.append(" isprov"); 3830 } 3831 } 3832 loge(sb.toString()); 3833 } 3834 3835 // If we just configured or lost IP configuration, do the needful. 3836 // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() 3837 // here because those should only be called if we're attempting to connect or already 3838 // connected, whereas updateLinkProperties can be called at any time. 3839 switch (reason) { 3840 case DhcpStateMachine.DHCP_SUCCESS: 3841 case CMD_STATIC_IP_SUCCESS: 3842 // IPv4 provisioning succeded. Advance to connected state. 3843 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 3844 if (!isProvisioned) { 3845 // Can never happen unless DHCP reports success but isProvisioned thinks the 3846 // resulting configuration is invalid (e.g., no IPv4 address, or the state in 3847 // mLinkProperties is out of sync with reality, or there's a bug in this code). 3848 // TODO: disconnect here instead. If our configuration is not usable, there's no 3849 // point in staying connected, and if mLinkProperties is out of sync with 3850 // reality, that will cause problems in the future. 3851 loge("IPv4 config succeeded, but not provisioned"); 3852 } 3853 break; 3854 3855 case DhcpStateMachine.DHCP_FAILURE: 3856 // DHCP failed. If we're not already provisioned, give up and disconnect. 3857 // If we're already provisioned (e.g., IPv6-only network), stay connected. 3858 if (!isProvisioned) { 3859 sendMessage(CMD_IP_CONFIGURATION_LOST); 3860 } else { 3861 // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). 3862 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 3863 3864 // To be sure we don't get stuck with a non-working network if all we had is 3865 // IPv4, remove the IPv4 address from the interface (since we're using DHCP, 3866 // and DHCP failed). If we had an IPv4 address before, the deletion of the 3867 // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was 3868 // necessary for provisioning, its deletion will cause us to disconnect. 3869 // 3870 // This shouldn't be needed, because on an IPv4-only network a DHCP failure will 3871 // have empty DhcpResults and thus empty LinkProperties, and isProvisioned will 3872 // not return true if we're using DHCP and don't have an IPv4 default route. So 3873 // for now it's only here for extra redundancy. However, it will increase 3874 // robustness if we move to getting IPv4 routes from netlink as well. 3875 loge("DHCP failure: provisioned, clearing IPv4 address."); 3876 if (!clearIPv4Address(mInterfaceName)) { 3877 sendMessage(CMD_IP_CONFIGURATION_LOST); 3878 } 3879 } 3880 break; 3881 3882 case CMD_STATIC_IP_FAILURE: 3883 // Static configuration was invalid, or an error occurred in applying it. Give up. 3884 sendMessage(CMD_IP_CONFIGURATION_LOST); 3885 break; 3886 3887 case CMD_UPDATE_LINKPROPERTIES: 3888 // IP addresses, DNS servers, etc. changed. Act accordingly. 3889 if (wasProvisioned && !isProvisioned) { 3890 // We no longer have a usable network configuration. Disconnect. 3891 sendMessage(CMD_IP_CONFIGURATION_LOST); 3892 } else if (!wasProvisioned && isProvisioned) { 3893 // We have a usable IPv6-only config. Advance to connected state. 3894 sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); 3895 } 3896 if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { 3897 // If anything has changed and we're already connected, send out a notification. 3898 sendLinkConfigurationChangedBroadcast(); 3899 } 3900 break; 3901 } 3902 } 3903 3904 /** 3905 * Clears all our link properties. 3906 */ 3907 private void clearLinkProperties() { 3908 // Clear the link properties obtained from DHCP and netlink. 3909 synchronized (mDhcpResultsLock) { 3910 if (mDhcpResults != null) { 3911 mDhcpResults.clear(); 3912 } 3913 } 3914 mNetlinkTracker.clearLinkProperties(); 3915 3916 // Now clear the merged link properties. 3917 mLinkProperties.clear(); 3918 if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); 3919 } 3920 3921 /** 3922 * try to update default route MAC address. 3923 */ 3924 private String updateDefaultRouteMacAddress(int timeout) { 3925 String address = null; 3926 for (RouteInfo route : mLinkProperties.getRoutes()) { 3927 if (route.isDefaultRoute() && route.hasGateway()) { 3928 InetAddress gateway = route.getGateway(); 3929 if (gateway instanceof Inet4Address) { 3930 if (PDBG) { 3931 loge("updateDefaultRouteMacAddress found Ipv4 default :" 3932 + gateway.getHostAddress()); 3933 } 3934 address = macAddressFromRoute(gateway.getHostAddress()); 3935 /* The gateway's MAC address is known */ 3936 if ((address == null) && (timeout > 0)) { 3937 boolean reachable = false; 3938 try { 3939 reachable = gateway.isReachable(timeout); 3940 } catch (Exception e) { 3941 loge("updateDefaultRouteMacAddress exception reaching :" 3942 + gateway.getHostAddress()); 3943 3944 } finally { 3945 if (reachable == true) { 3946 3947 address = macAddressFromRoute(gateway.getHostAddress()); 3948 if (PDBG) { 3949 loge("updateDefaultRouteMacAddress reachable (tried again) :" 3950 + gateway.getHostAddress() + " found " + address); 3951 } 3952 } 3953 } 3954 } 3955 if (address != null) { 3956 mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); 3957 } 3958 } 3959 } 3960 } 3961 return address; 3962 } 3963 3964 private void sendScanResultsAvailableBroadcast() { 3965 Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); 3966 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3967 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3968 } 3969 3970 private void sendRssiChangeBroadcast(final int newRssi) { 3971 try { 3972 mBatteryStats.noteWifiRssiChanged(newRssi); 3973 } catch (RemoteException e) { 3974 // Won't happen. 3975 } 3976 Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); 3977 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3978 intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); 3979 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3980 } 3981 3982 private void sendNetworkStateChangeBroadcast(String bssid) { 3983 Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); 3984 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3985 intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); 3986 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties (mLinkProperties)); 3987 if (bssid != null) 3988 intent.putExtra(WifiManager.EXTRA_BSSID, bssid); 3989 if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || 3990 mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { 3991 intent.putExtra(WifiManager.EXTRA_WIFI_INFO, new WifiInfo(mWifiInfo)); 3992 } 3993 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3994 } 3995 3996 private void sendLinkConfigurationChangedBroadcast() { 3997 Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION); 3998 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3999 intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties)); 4000 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4001 } 4002 4003 private void sendSupplicantConnectionChangedBroadcast(boolean connected) { 4004 Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); 4005 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 4006 intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); 4007 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 4008 } 4009 4010 /** 4011 * Record the detailed state of a network. 4012 * @param state the new {@code DetailedState} 4013 */ 4014 private boolean setNetworkDetailedState(NetworkInfo.DetailedState state) { 4015 boolean hidden = false; 4016 4017 if (linkDebouncing || isRoaming()) { 4018 // There is generally a confusion in the system about colluding 4019 // WiFi Layer 2 state (as reported by supplicant) and the Network state 4020 // which leads to multiple confusion. 4021 // 4022 // If link is de-bouncing or roaming, we already have an IP address 4023 // as well we were connected and are doing L2 cycles of 4024 // reconnecting or renewing IP address to check that we still have it 4025 // This L2 link flapping should ne be reflected into the Network state 4026 // which is the state of the WiFi Network visible to Layer 3 and applications 4027 // Note that once debouncing and roaming are completed, we will 4028 // set the Network state to where it should be, or leave it as unchanged 4029 // 4030 hidden = true; 4031 } 4032 if (DBG) { 4033 log("setDetailed state, old =" 4034 + mNetworkInfo.getDetailedState() + " and new state=" + state 4035 + " hidden=" + hidden); 4036 } 4037 if (mNetworkInfo.getExtraInfo() != null && mWifiInfo.getSSID() != null) { 4038 // Always indicate that SSID has changed 4039 if (!mNetworkInfo.getExtraInfo().equals(mWifiInfo.getSSID())) { 4040 if (DBG) { 4041 log("setDetailed state send new extra info" + mWifiInfo.getSSID()); 4042 } 4043 mNetworkInfo.setExtraInfo(mWifiInfo.getSSID()); 4044 sendNetworkStateChangeBroadcast(null); 4045 } 4046 } 4047 if (hidden == true) { 4048 return false; 4049 } 4050 4051 if (state != mNetworkInfo.getDetailedState()) { 4052 mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); 4053 if (mNetworkAgent != null) { 4054 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4055 } 4056 sendNetworkStateChangeBroadcast(null); 4057 return true; 4058 } 4059 return false; 4060 } 4061 4062 private DetailedState getNetworkDetailedState() { 4063 return mNetworkInfo.getDetailedState(); 4064 } 4065 4066 4067 private SupplicantState handleSupplicantStateChange(Message message) { 4068 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 4069 SupplicantState state = stateChangeResult.state; 4070 // Supplicant state change 4071 // [31-13] Reserved for future use 4072 // [8 - 0] Supplicant state (as defined in SupplicantState.java) 4073 // 50023 supplicant_state_changed (custom|1|5) 4074 mWifiInfo.setSupplicantState(state); 4075 // Network id is only valid when we start connecting 4076 if (SupplicantState.isConnecting(state)) { 4077 mWifiInfo.setNetworkId(stateChangeResult.networkId); 4078 } else { 4079 mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); 4080 } 4081 4082 mWifiInfo.setBSSID(stateChangeResult.BSSID); 4083 mWifiInfo.setSSID(stateChangeResult.wifiSsid); 4084 4085 mSupplicantStateTracker.sendMessage(Message.obtain(message)); 4086 4087 return state; 4088 } 4089 4090 /** 4091 * Resets the Wi-Fi Connections by clearing any state, resetting any sockets 4092 * using the interface, stopping DHCP & disabling interface 4093 */ 4094 private void handleNetworkDisconnect() { 4095 if (DBG) log("handleNetworkDisconnect: Stopping DHCP and clearing IP" 4096 + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() 4097 +" - "+ Thread.currentThread().getStackTrace()[3].getMethodName() 4098 +" - "+ Thread.currentThread().getStackTrace()[4].getMethodName() 4099 +" - "+ Thread.currentThread().getStackTrace()[5].getMethodName()); 4100 4101 4102 clearCurrentConfigBSSID("handleNetworkDisconnect"); 4103 4104 stopDhcp(); 4105 4106 try { 4107 mNwService.clearInterfaceAddresses(mInterfaceName); 4108 mNwService.disableIpv6(mInterfaceName); 4109 } catch (Exception e) { 4110 loge("Failed to clear addresses or disable ipv6" + e); 4111 } 4112 4113 /* Reset data structures */ 4114 mBadLinkspeedcount = 0; 4115 mWifiInfo.reset(); 4116 linkDebouncing = false; 4117 /* Reset roaming parameters */ 4118 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 4119 fullBandConnectedTimeIntervalMilli = 20 * 1000; // Start scans at 20 seconds interval 4120 4121 setNetworkDetailedState(DetailedState.DISCONNECTED); 4122 if (mNetworkAgent != null) { 4123 mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4124 mNetworkAgent = null; 4125 } 4126 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); 4127 4128 /* Clear network properties */ 4129 clearLinkProperties(); 4130 4131 /* Cend event to CM & network change broadcast */ 4132 sendNetworkStateChangeBroadcast(mLastBssid); 4133 4134 /* Cancel auto roam requests */ 4135 autoRoamSetBSSID(mLastNetworkId, "any"); 4136 4137 mLastBssid= null; 4138 registerDisconnected(); 4139 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4140 } 4141 4142 private void handleSupplicantConnectionLoss() { 4143 /* Socket connection can be lost when we do a graceful shutdown 4144 * or when the driver is hung. Ensure supplicant is stopped here. 4145 */ 4146 mWifiMonitor.killSupplicant(mP2pSupported); 4147 mWifiNative.closeSupplicantConnection(); 4148 sendSupplicantConnectionChangedBroadcast(false); 4149 setWifiState(WIFI_STATE_DISABLED); 4150 } 4151 4152 void handlePreDhcpSetup() { 4153 mDhcpActive = true; 4154 if (!mBluetoothConnectionActive) { 4155 /* 4156 * There are problems setting the Wi-Fi driver's power 4157 * mode to active when bluetooth coexistence mode is 4158 * enabled or sense. 4159 * <p> 4160 * We set Wi-Fi to active mode when 4161 * obtaining an IP address because we've found 4162 * compatibility issues with some routers with low power 4163 * mode. 4164 * <p> 4165 * In order for this active power mode to properly be set, 4166 * we disable coexistence mode until we're done with 4167 * obtaining an IP address. One exception is if we 4168 * are currently connected to a headset, since disabling 4169 * coexistence would interrupt that connection. 4170 */ 4171 // Disable the coexistence mode 4172 mWifiNative.setBluetoothCoexistenceMode( 4173 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); 4174 } 4175 4176 // Disable power save and suspend optimizations during DHCP 4177 // Note: The order here is important for now. Brcm driver changes 4178 // power settings when we control suspend mode optimizations. 4179 // TODO: Remove this comment when the driver is fixed. 4180 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); 4181 mWifiNative.setPowerSave(false); 4182 4183 stopBatchedScan(); 4184 WifiNative.pauseScan(); 4185 4186 /* P2p discovery breaks dhcp, shut it down in order to get through this */ 4187 Message msg = new Message(); 4188 msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY; 4189 msg.arg1 = WifiP2pServiceImpl.ENABLED; 4190 msg.arg2 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; 4191 msg.obj = mDhcpStateMachine; 4192 mWifiP2pChannel.sendMessage(msg); 4193 } 4194 4195 4196 void startDhcp() { 4197 if (mDhcpStateMachine == null) { 4198 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4199 mContext, WifiStateMachine.this, mInterfaceName); 4200 4201 } 4202 mDhcpStateMachine.registerForPreDhcpNotification(); 4203 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); 4204 } 4205 4206 void renewDhcp() { 4207 if (mDhcpStateMachine == null) { 4208 mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( 4209 mContext, WifiStateMachine.this, mInterfaceName); 4210 4211 } 4212 mDhcpStateMachine.registerForPreDhcpNotification(); 4213 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); 4214 } 4215 4216 void stopDhcp() { 4217 if (mDhcpStateMachine != null) { 4218 /* In case we were in middle of DHCP operation restore back powermode */ 4219 handlePostDhcpSetup(); 4220 mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); 4221 } 4222 } 4223 4224 void handlePostDhcpSetup() { 4225 /* Restore power save and suspend optimizations */ 4226 setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); 4227 mWifiNative.setPowerSave(true); 4228 4229 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); 4230 4231 // Set the coexistence mode back to its default value 4232 mWifiNative.setBluetoothCoexistenceMode( 4233 mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); 4234 4235 mDhcpActive = false; 4236 4237 startBatchedScan(); 4238 WifiNative.restartScan(); 4239 } 4240 4241 private void handleIPv4Success(DhcpResults dhcpResults, int reason) { 4242 4243 if (PDBG) { 4244 loge("wifistatemachine handleIPv4Success <" + dhcpResults.toString() + ">"); 4245 loge("link address " + dhcpResults.ipAddress); 4246 } 4247 4248 synchronized (mDhcpResultsLock) { 4249 mDhcpResults = dhcpResults; 4250 } 4251 4252 Inet4Address addr = (Inet4Address) dhcpResults.ipAddress.getAddress(); 4253 if (isRoaming()) { 4254 if (addr instanceof Inet4Address) { 4255 int previousAddress = mWifiInfo.getIpAddress(); 4256 int newAddress = NetworkUtils.inetAddressToInt(addr); 4257 if (previousAddress != newAddress) { 4258 loge("handleIPv4Success, roaming and address changed" + 4259 mWifiInfo + " got: " + addr); 4260 } else { 4261 4262 } 4263 } else { 4264 loge("handleIPv4Success, roaming and didnt get an IPv4 address" + 4265 addr.toString()); 4266 } 4267 } 4268 mWifiInfo.setInetAddress(addr); 4269 mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); 4270 updateLinkProperties(reason); 4271 } 4272 4273 private void handleSuccessfulIpConfiguration() { 4274 mLastSignalLevel = -1; // Force update of signal strength 4275 WifiConfiguration c = getCurrentWifiConfiguration(); 4276 // Reset IP failure tracking 4277 if (c != null) { 4278 c.numConnectionFailures = 0; 4279 } 4280 if (c != null) { 4281 ScanResult result = getCurrentScanResult(); 4282 if (result == null) { 4283 loge("WifiStateMachine: handleSuccessfulIpConfiguration and no scan results" + 4284 c.configKey()); 4285 } else { 4286 // Clear the per BSSID failure count 4287 result.numIpConfigFailures = 0; 4288 // Clear the WHOLE BSSID blacklist, which means supplicant is free to retry 4289 // any BSSID, even though it may already have a non zero ip failure count, 4290 // this will typically happen if the user walks away and come back to his arrea 4291 // TODO: implement blacklisting based on a timer, i.e. keep BSSID blacklisted 4292 // in supplicant for a couple of hours or a day 4293 mWifiNative.blackListBSSID(null); 4294 } 4295 } 4296 } 4297 4298 private void handleIPv4Failure(int reason) { 4299 synchronized(mDhcpResultsLock) { 4300 if (mDhcpResults != null) { 4301 mDhcpResults.clear(); 4302 } 4303 } 4304 if (PDBG) { 4305 loge("wifistatemachine handleIPv4Failure"); 4306 } 4307 updateLinkProperties(reason); 4308 } 4309 4310 private void handleIpConfigurationLost() { 4311 mWifiInfo.setInetAddress(null); 4312 mWifiInfo.setMeteredHint(false); 4313 4314 mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, 4315 "DHCP FAILURE", mWifiInfo.getBSSID()); 4316 4317 /* DHCP times out after about 30 seconds, we do a 4318 * disconnect thru supplicant, we will let autojoin retry connecting to the network 4319 */ 4320 mWifiNative.disconnect(); 4321 } 4322 4323 /* Current design is to not set the config on a running hostapd but instead 4324 * stop and start tethering when user changes config on a running access point 4325 * 4326 * TODO: Add control channel setup through hostapd that allows changing config 4327 * on a running daemon 4328 */ 4329 private void startSoftApWithConfig(final WifiConfiguration config) { 4330 // Start hostapd on a separate thread 4331 new Thread(new Runnable() { 4332 public void run() { 4333 try { 4334 mNwService.startAccessPoint(config, mInterfaceName); 4335 } catch (Exception e) { 4336 loge("Exception in softap start " + e); 4337 try { 4338 mNwService.stopAccessPoint(mInterfaceName); 4339 mNwService.startAccessPoint(config, mInterfaceName); 4340 } catch (Exception e1) { 4341 loge("Exception in softap re-start " + e1); 4342 sendMessage(CMD_START_AP_FAILURE); 4343 return; 4344 } 4345 } 4346 if (DBG) log("Soft AP start successful"); 4347 sendMessage(CMD_START_AP_SUCCESS); 4348 } 4349 }).start(); 4350 } 4351 4352 4353 /* 4354 * Read a MAC address in /proc/arp/table, used by WifistateMachine 4355 * so as to record MAC address of default gateway. 4356 **/ 4357 private String macAddressFromRoute(String ipAddress) { 4358 String macAddress = null; 4359 BufferedReader reader = null; 4360 try { 4361 reader = new BufferedReader(new FileReader("/proc/net/arp")); 4362 4363 // Skip over the line bearing colum titles 4364 String line = reader.readLine(); 4365 4366 while ((line = reader.readLine()) != null) { 4367 String[] tokens = line.split("[ ]+"); 4368 if (tokens.length < 6) { 4369 continue; 4370 } 4371 4372 // ARP column format is 4373 // Address HWType HWAddress Flags Mask IFace 4374 String ip = tokens[0]; 4375 String mac = tokens[3]; 4376 4377 if (ipAddress.equals(ip)) { 4378 macAddress = mac; 4379 break; 4380 } 4381 } 4382 4383 if (macAddress == null) { 4384 loge("Did not find remoteAddress {" + ipAddress + "} in " + 4385 "/proc/net/arp"); 4386 } 4387 4388 } catch (FileNotFoundException e) { 4389 loge("Could not open /proc/net/arp to lookup mac address"); 4390 } catch (IOException e) { 4391 loge("Could not read /proc/net/arp to lookup mac address"); 4392 } finally { 4393 try { 4394 if (reader != null) { 4395 reader.close(); 4396 } 4397 } catch (IOException e) { 4398 // Do nothing 4399 } 4400 } 4401 return macAddress; 4402 4403 } 4404 4405 private class WifiNetworkFactory extends NetworkFactory { 4406 public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { 4407 super(l, c, TAG, f); 4408 } 4409 protected void startNetwork() { 4410 // TODO 4411 // Enter association mode. 4412 } 4413 protected void stopNetwork() { 4414 // TODO 4415 // Stop associating. 4416 } 4417 } 4418 /******************************************************** 4419 * HSM states 4420 *******************************************************/ 4421 4422 class DefaultState extends State { 4423 @Override 4424 public boolean processMessage(Message message) { 4425 logStateAndMessage(message, getClass().getSimpleName()); 4426 4427 switch (message.what) { 4428 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 4429 AsyncChannel ac = (AsyncChannel) message.obj; 4430 if (ac == mWifiP2pChannel) { 4431 if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 4432 mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 4433 } else { 4434 loge("WifiP2pService connection failure, error=" + message.arg1); 4435 } 4436 } else { 4437 loge("got HALF_CONNECTED for unknown channel"); 4438 } 4439 break; 4440 } 4441 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 4442 AsyncChannel ac = (AsyncChannel) message.obj; 4443 if (ac == mWifiP2pChannel) { 4444 loge("WifiP2pService channel lost, message.arg1 =" + message.arg1); 4445 //TODO: Re-establish connection to state machine after a delay 4446 // mWifiP2pChannel.connect(mContext, getHandler(), 4447 // mWifiP2pManager.getMessenger()); 4448 } 4449 break; 4450 } 4451 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 4452 mBluetoothConnectionActive = (message.arg1 != 4453 BluetoothAdapter.STATE_DISCONNECTED); 4454 break; 4455 /* Synchronous call returns */ 4456 case CMD_PING_SUPPLICANT: 4457 case CMD_ENABLE_NETWORK: 4458 case CMD_ADD_OR_UPDATE_NETWORK: 4459 case CMD_REMOVE_NETWORK: 4460 case CMD_SAVE_CONFIG: 4461 replyToMessage(message, message.what, FAILURE); 4462 break; 4463 case CMD_GET_CAPABILITY_FREQ: 4464 replyToMessage(message, message.what, null); 4465 break; 4466 case CMD_GET_CONFIGURED_NETWORKS: 4467 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4468 break; 4469 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 4470 replyToMessage(message, message.what, (List<WifiConfiguration>) null); 4471 break; 4472 case CMD_ENABLE_RSSI_POLL: 4473 mEnableRssiPolling = (message.arg1 == 1); 4474 break; 4475 case CMD_SET_HIGH_PERF_MODE: 4476 if (message.arg1 == 1) { 4477 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false); 4478 } else { 4479 setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true); 4480 } 4481 break; 4482 case CMD_BOOT_COMPLETED: 4483 String countryCode = mPersistedCountryCode; 4484 if (TextUtils.isEmpty(countryCode) == false) { 4485 Settings.Global.putString(mContext.getContentResolver(), 4486 Settings.Global.WIFI_COUNTRY_CODE, 4487 countryCode); 4488 // It may be that the state transition that should send this info 4489 // to the driver happened between mPersistedCountryCode getting set 4490 // and now, so simply persisting it here would mean we have sent 4491 // nothing to the driver. Send the cmd so it might be set now. 4492 int sequenceNum = mCountryCodeSequence.incrementAndGet(); 4493 sendMessageAtFrontOfQueue(CMD_SET_COUNTRY_CODE, 4494 sequenceNum, 0, countryCode); 4495 } 4496 4497 checkAndSetConnectivityInstance(); 4498 mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, 4499 NETWORKTYPE, mNetworkCapabilitiesFilter); 4500 mNetworkFactory.setScoreFilter(60); 4501 mCm.registerNetworkFactory(new Messenger(mNetworkFactory), NETWORKTYPE); 4502 break; 4503 case CMD_SET_BATCHED_SCAN: 4504 recordBatchedScanSettings(message.arg1, message.arg2, (Bundle)message.obj); 4505 break; 4506 case CMD_POLL_BATCHED_SCAN: 4507 handleBatchedScanPollRequest(); 4508 break; 4509 case CMD_START_NEXT_BATCHED_SCAN: 4510 startNextBatchedScan(); 4511 break; 4512 case CMD_SCREEN_STATE_CHANGED: 4513 handleScreenStateChanged(message.arg1 != 0, 4514 /* startBackgroundScanIfNeeded = */ false); 4515 break; 4516 /* Discard */ 4517 case CMD_START_SCAN: 4518 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4519 break; 4520 case CMD_START_SUPPLICANT: 4521 case CMD_STOP_SUPPLICANT: 4522 case CMD_STOP_SUPPLICANT_FAILED: 4523 case CMD_START_DRIVER: 4524 case CMD_STOP_DRIVER: 4525 case CMD_DELAYED_STOP_DRIVER: 4526 case CMD_DRIVER_START_TIMED_OUT: 4527 case CMD_START_AP: 4528 case CMD_START_AP_SUCCESS: 4529 case CMD_START_AP_FAILURE: 4530 case CMD_STOP_AP: 4531 case CMD_TETHER_STATE_CHANGE: 4532 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 4533 case CMD_DISCONNECT: 4534 case CMD_RECONNECT: 4535 case CMD_REASSOCIATE: 4536 case CMD_RELOAD_TLS_AND_RECONNECT: 4537 case WifiMonitor.SUP_CONNECTION_EVENT: 4538 case WifiMonitor.SUP_DISCONNECTION_EVENT: 4539 case WifiMonitor.NETWORK_CONNECTION_EVENT: 4540 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 4541 case WifiMonitor.SCAN_RESULTS_EVENT: 4542 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 4543 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 4544 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 4545 case WifiMonitor.WPS_OVERLAP_EVENT: 4546 case CMD_BLACKLIST_NETWORK: 4547 case CMD_CLEAR_BLACKLIST: 4548 case CMD_SET_OPERATIONAL_MODE: 4549 case CMD_SET_COUNTRY_CODE: 4550 case CMD_SET_FREQUENCY_BAND: 4551 case CMD_RSSI_POLL: 4552 case CMD_ENABLE_ALL_NETWORKS: 4553 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 4554 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 4555 /* Handled by WifiApConfigStore */ 4556 case CMD_SET_AP_CONFIG: 4557 case CMD_SET_AP_CONFIG_COMPLETED: 4558 case CMD_REQUEST_AP_CONFIG: 4559 case CMD_RESPONSE_AP_CONFIG: 4560 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 4561 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 4562 case CMD_NO_NETWORKS_PERIODIC_SCAN: 4563 case CMD_DISABLE_P2P_RSP: 4564 case WifiMonitor.SUP_REQUEST_IDENTITY: 4565 case CMD_TEST_NETWORK_DISCONNECT: 4566 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 4567 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 4568 case CMD_TARGET_BSSID: 4569 case CMD_AUTO_CONNECT: 4570 case CMD_AUTO_ROAM: 4571 case CMD_AUTO_SAVE_NETWORK: 4572 case CMD_ASSOCIATED_BSSID: 4573 case CMD_UNWANTED_NETWORK: 4574 case CMD_DISCONNECTING_WATCHDOG_TIMER: 4575 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4576 break; 4577 case DhcpStateMachine.CMD_ON_QUIT: 4578 mDhcpStateMachine = null; 4579 break; 4580 case CMD_SET_SUSPEND_OPT_ENABLED: 4581 if (message.arg1 == 1) { 4582 mSuspendWakeLock.release(); 4583 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); 4584 } else { 4585 setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); 4586 } 4587 break; 4588 case WifiMonitor.DRIVER_HUNG_EVENT: 4589 setSupplicantRunning(false); 4590 setSupplicantRunning(true); 4591 break; 4592 case WifiManager.CONNECT_NETWORK: 4593 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 4594 WifiManager.BUSY); 4595 break; 4596 case WifiManager.FORGET_NETWORK: 4597 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 4598 WifiManager.BUSY); 4599 break; 4600 case WifiManager.SAVE_NETWORK: 4601 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 4602 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 4603 WifiManager.BUSY); 4604 break; 4605 case WifiManager.START_WPS: 4606 replyToMessage(message, WifiManager.WPS_FAILED, 4607 WifiManager.BUSY); 4608 break; 4609 case WifiManager.CANCEL_WPS: 4610 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, 4611 WifiManager.BUSY); 4612 break; 4613 case WifiManager.DISABLE_NETWORK: 4614 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 4615 WifiManager.BUSY); 4616 break; 4617 case WifiManager.RSSI_PKTCNT_FETCH: 4618 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED, 4619 WifiManager.BUSY); 4620 break; 4621 case CMD_GET_SUPPORTED_FEATURES: 4622 if (WifiNative.startHal()) { 4623 int featureSet = WifiNative.getSupportedFeatureSet(); 4624 replyToMessage(message, message.what, featureSet); 4625 } else { 4626 replyToMessage(message, message.what, 0); 4627 } 4628 break; 4629 case CMD_GET_LINK_LAYER_STATS: 4630 // Not supported hence reply with error message 4631 replyToMessage(message, message.what, null); 4632 break; 4633 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 4634 NetworkInfo info = (NetworkInfo) message.obj; 4635 mP2pConnected.set(info.isConnected()); 4636 break; 4637 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 4638 mTemporarilyDisconnectWifi = (message.arg1 == 1); 4639 replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 4640 break; 4641 /* Link configuration (IP address, DNS, ...) changes notified via netlink */ 4642 case CMD_UPDATE_LINKPROPERTIES: 4643 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 4644 break; 4645 case CMD_IP_CONFIGURATION_SUCCESSFUL: 4646 case CMD_IP_CONFIGURATION_LOST: 4647 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 4648 break; 4649 case CMD_GET_CONNECTION_STATISTICS: 4650 replyToMessage(message, message.what, mWifiConnectionStatistics); 4651 break; 4652 default: 4653 loge("Error! unhandled message" + message); 4654 break; 4655 } 4656 return HANDLED; 4657 } 4658 } 4659 4660 class InitialState extends State { 4661 @Override 4662 public void enter() { 4663 mWifiNative.unloadDriver(); 4664 4665 if (mWifiP2pChannel == null) { 4666 mWifiP2pChannel = new AsyncChannel(); 4667 mWifiP2pChannel.connect(mContext, getHandler(), 4668 mWifiP2pServiceImpl.getP2pStateMachineMessenger()); 4669 } 4670 4671 if (mWifiApConfigChannel == null) { 4672 mWifiApConfigChannel = new AsyncChannel(); 4673 WifiApConfigStore wifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( 4674 mContext, getHandler()); 4675 wifiApConfigStore.loadApConfiguration(); 4676 mWifiApConfigChannel.connectSync(mContext, getHandler(), 4677 wifiApConfigStore.getMessenger()); 4678 } 4679 } 4680 @Override 4681 public boolean processMessage(Message message) { 4682 logStateAndMessage(message, getClass().getSimpleName()); 4683 switch (message.what) { 4684 case CMD_START_SUPPLICANT: 4685 if (mWifiNative.loadDriver()) { 4686 try { 4687 mNwService.wifiFirmwareReload(mInterfaceName, "STA"); 4688 } catch (Exception e) { 4689 loge("Failed to reload STA firmware " + e); 4690 // Continue 4691 } 4692 4693 try { 4694 // A runtime crash can leave the interface up and 4695 // IP addresses configured, and this affects 4696 // connectivity when supplicant starts up. 4697 // Ensure interface is down and we have no IP 4698 // addresses before a supplicant start. 4699 mNwService.setInterfaceDown(mInterfaceName); 4700 mNwService.clearInterfaceAddresses(mInterfaceName); 4701 4702 // Set privacy extensions 4703 mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); 4704 4705 // IPv6 is enabled only as long as access point is connected since: 4706 // - IPv6 addresses and routes stick around after disconnection 4707 // - kernel is unaware when connected and fails to start IPv6 negotiation 4708 // - kernel can start autoconfiguration when 802.1x is not complete 4709 mNwService.disableIpv6(mInterfaceName); 4710 } catch (RemoteException re) { 4711 loge("Unable to change interface settings: " + re); 4712 } catch (IllegalStateException ie) { 4713 loge("Unable to change interface settings: " + ie); 4714 } 4715 4716 /* Stop a running supplicant after a runtime restart 4717 * Avoids issues with drivers that do not handle interface down 4718 * on a running supplicant properly. 4719 */ 4720 mWifiMonitor.killSupplicant(mP2pSupported); 4721 if(mWifiNative.startSupplicant(mP2pSupported)) { 4722 setWifiState(WIFI_STATE_ENABLING); 4723 if (DBG) log("Supplicant start successful"); 4724 mWifiMonitor.startMonitoring(); 4725 transitionTo(mSupplicantStartingState); 4726 } else { 4727 loge("Failed to start supplicant!"); 4728 } 4729 } else { 4730 loge("Failed to load driver"); 4731 } 4732 break; 4733 case CMD_START_AP: 4734 if (mWifiNative.loadDriver()) { 4735 setWifiApState(WIFI_AP_STATE_ENABLING); 4736 transitionTo(mSoftApStartingState); 4737 } else { 4738 loge("Failed to load driver for softap"); 4739 } 4740 default: 4741 return NOT_HANDLED; 4742 } 4743 return HANDLED; 4744 } 4745 } 4746 4747 class SupplicantStartingState extends State { 4748 private void initializeWpsDetails() { 4749 String detail; 4750 detail = SystemProperties.get("ro.product.name", ""); 4751 if (!mWifiNative.setDeviceName(detail)) { 4752 loge("Failed to set device name " + detail); 4753 } 4754 detail = SystemProperties.get("ro.product.manufacturer", ""); 4755 if (!mWifiNative.setManufacturer(detail)) { 4756 loge("Failed to set manufacturer " + detail); 4757 } 4758 detail = SystemProperties.get("ro.product.model", ""); 4759 if (!mWifiNative.setModelName(detail)) { 4760 loge("Failed to set model name " + detail); 4761 } 4762 detail = SystemProperties.get("ro.product.model", ""); 4763 if (!mWifiNative.setModelNumber(detail)) { 4764 loge("Failed to set model number " + detail); 4765 } 4766 detail = SystemProperties.get("ro.serialno", ""); 4767 if (!mWifiNative.setSerialNumber(detail)) { 4768 loge("Failed to set serial number " + detail); 4769 } 4770 if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { 4771 loge("Failed to set WPS config methods"); 4772 } 4773 if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { 4774 loge("Failed to set primary device type " + mPrimaryDeviceType); 4775 } 4776 } 4777 4778 @Override 4779 public boolean processMessage(Message message) { 4780 logStateAndMessage(message, getClass().getSimpleName()); 4781 4782 switch(message.what) { 4783 case WifiMonitor.SUP_CONNECTION_EVENT: 4784 if (DBG) log("Supplicant connection established"); 4785 setWifiState(WIFI_STATE_ENABLED); 4786 mSupplicantRestartCount = 0; 4787 /* Reset the supplicant state to indicate the supplicant 4788 * state is not known at this time */ 4789 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 4790 /* Initialize data structures */ 4791 mLastBssid = null; 4792 mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; 4793 mLastSignalLevel = -1; 4794 4795 mWifiInfo.setMacAddress(mWifiNative.getMacAddress()); 4796 mWifiNative.enableSaveConfig(); 4797 mWifiConfigStore.loadAndEnableAllNetworks(); 4798 enableVerboseLogging(mWifiConfigStore.enableVerboseLogging); 4799 if (mWifiConfigStore.associatedPartialScanPeriodMilli < 0) { 4800 mWifiConfigStore.associatedPartialScanPeriodMilli = 0; 4801 } 4802 initializeWpsDetails(); 4803 4804 sendSupplicantConnectionChangedBroadcast(true); 4805 transitionTo(mDriverStartedState); 4806 break; 4807 case WifiMonitor.SUP_DISCONNECTION_EVENT: 4808 if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { 4809 loge("Failed to setup control channel, restart supplicant"); 4810 mWifiMonitor.killSupplicant(mP2pSupported); 4811 transitionTo(mInitialState); 4812 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 4813 } else { 4814 loge("Failed " + mSupplicantRestartCount + 4815 " times to start supplicant, unload driver"); 4816 mSupplicantRestartCount = 0; 4817 setWifiState(WIFI_STATE_UNKNOWN); 4818 transitionTo(mInitialState); 4819 } 4820 break; 4821 case CMD_START_SUPPLICANT: 4822 case CMD_STOP_SUPPLICANT: 4823 case CMD_START_AP: 4824 case CMD_STOP_AP: 4825 case CMD_START_DRIVER: 4826 case CMD_STOP_DRIVER: 4827 case CMD_SET_OPERATIONAL_MODE: 4828 case CMD_SET_COUNTRY_CODE: 4829 case CMD_SET_FREQUENCY_BAND: 4830 case CMD_START_PACKET_FILTERING: 4831 case CMD_STOP_PACKET_FILTERING: 4832 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 4833 deferMessage(message); 4834 break; 4835 default: 4836 return NOT_HANDLED; 4837 } 4838 return HANDLED; 4839 } 4840 } 4841 4842 class SupplicantStartedState extends State { 4843 @Override 4844 public void enter() { 4845 /* Wifi is available as long as we have a connection to supplicant */ 4846 mNetworkInfo.setIsAvailable(true); 4847 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4848 4849 int defaultInterval = mContext.getResources().getInteger( 4850 R.integer.config_wifi_supplicant_scan_interval); 4851 4852 mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 4853 Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, 4854 defaultInterval); 4855 4856 mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); 4857 mWifiNative.setExternalSim(true); 4858 4859 setRandomMacOui(); 4860 mWifiNative.enableAutoConnect(false); 4861 } 4862 4863 @Override 4864 public boolean processMessage(Message message) { 4865 logStateAndMessage(message, getClass().getSimpleName()); 4866 4867 switch(message.what) { 4868 case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ 4869 if (mP2pSupported) { 4870 transitionTo(mWaitForP2pDisableState); 4871 } else { 4872 transitionTo(mSupplicantStoppingState); 4873 } 4874 break; 4875 case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ 4876 loge("Connection lost, restart supplicant"); 4877 handleSupplicantConnectionLoss(); 4878 handleNetworkDisconnect(); 4879 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 4880 if (mP2pSupported) { 4881 transitionTo(mWaitForP2pDisableState); 4882 } else { 4883 transitionTo(mInitialState); 4884 } 4885 sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); 4886 break; 4887 case WifiMonitor.SCAN_RESULTS_EVENT: 4888 closeRadioScanStats(); 4889 noteScanEnd(); 4890 setScanResults(); 4891 if (mIsFullScanOngoing) { 4892 /* Just updated results from full scan, let apps know about this */ 4893 sendScanResultsAvailableBroadcast(); 4894 } 4895 mIsScanOngoing = false; 4896 mIsFullScanOngoing = false; 4897 if (mBufferedScanMsg.size() > 0) 4898 sendMessage(mBufferedScanMsg.remove()); 4899 break; 4900 case CMD_PING_SUPPLICANT: 4901 boolean ok = mWifiNative.ping(); 4902 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 4903 break; 4904 case CMD_GET_CAPABILITY_FREQ: 4905 String freqs = mWifiNative.getFreqCapability(); 4906 replyToMessage(message, message.what, freqs); 4907 break; 4908 case CMD_START_AP: 4909 /* Cannot start soft AP while in client mode */ 4910 loge("Failed to start soft AP with a running supplicant"); 4911 setWifiApState(WIFI_AP_STATE_FAILED); 4912 break; 4913 case CMD_SET_OPERATIONAL_MODE: 4914 mOperationalMode = message.arg1; 4915 break; 4916 case CMD_TARGET_BSSID: 4917 // Trying to associate to this BSSID 4918 if (message.obj != null) { 4919 mTargetRoamBSSID = (String) message.obj; 4920 } 4921 break; 4922 case CMD_GET_LINK_LAYER_STATS: 4923 WifiLinkLayerStats stats = getWifiLinkLayerStats(DBG); 4924 if (stats == null) { 4925 // When firmware doesnt support link layer stats, return an empty object 4926 stats = new WifiLinkLayerStats(); 4927 } 4928 replyToMessage(message, message.what, stats); 4929 break; 4930 default: 4931 return NOT_HANDLED; 4932 } 4933 return HANDLED; 4934 } 4935 4936 @Override 4937 public void exit() { 4938 mNetworkInfo.setIsAvailable(false); 4939 if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); 4940 } 4941 } 4942 4943 class SupplicantStoppingState extends State { 4944 @Override 4945 public void enter() { 4946 /* Send any reset commands to supplicant before shutting it down */ 4947 handleNetworkDisconnect(); 4948 if (mDhcpStateMachine != null) { 4949 mDhcpStateMachine.doQuit(); 4950 } 4951 4952 if (DBG) log("stopping supplicant"); 4953 mWifiMonitor.stopSupplicant(); 4954 4955 /* Send ourselves a delayed message to indicate failure after a wait time */ 4956 sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, 4957 ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); 4958 setWifiState(WIFI_STATE_DISABLING); 4959 mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); 4960 } 4961 @Override 4962 public boolean processMessage(Message message) { 4963 logStateAndMessage(message, getClass().getSimpleName()); 4964 4965 switch(message.what) { 4966 case WifiMonitor.SUP_CONNECTION_EVENT: 4967 loge("Supplicant connection received while stopping"); 4968 break; 4969 case WifiMonitor.SUP_DISCONNECTION_EVENT: 4970 if (DBG) log("Supplicant connection lost"); 4971 handleSupplicantConnectionLoss(); 4972 transitionTo(mInitialState); 4973 break; 4974 case CMD_STOP_SUPPLICANT_FAILED: 4975 if (message.arg1 == mSupplicantStopFailureToken) { 4976 loge("Timed out on a supplicant stop, kill and proceed"); 4977 handleSupplicantConnectionLoss(); 4978 transitionTo(mInitialState); 4979 } 4980 break; 4981 case CMD_START_SUPPLICANT: 4982 case CMD_STOP_SUPPLICANT: 4983 case CMD_START_AP: 4984 case CMD_STOP_AP: 4985 case CMD_START_DRIVER: 4986 case CMD_STOP_DRIVER: 4987 case CMD_SET_OPERATIONAL_MODE: 4988 case CMD_SET_COUNTRY_CODE: 4989 case CMD_SET_FREQUENCY_BAND: 4990 case CMD_START_PACKET_FILTERING: 4991 case CMD_STOP_PACKET_FILTERING: 4992 deferMessage(message); 4993 break; 4994 default: 4995 return NOT_HANDLED; 4996 } 4997 return HANDLED; 4998 } 4999 } 5000 5001 class DriverStartingState extends State { 5002 private int mTries; 5003 @Override 5004 public void enter() { 5005 mTries = 1; 5006 /* Send ourselves a delayed message to start driver a second time */ 5007 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5008 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5009 } 5010 @Override 5011 public boolean processMessage(Message message) { 5012 logStateAndMessage(message, getClass().getSimpleName()); 5013 5014 switch(message.what) { 5015 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5016 SupplicantState state = handleSupplicantStateChange(message); 5017 /* If suplicant is exiting out of INTERFACE_DISABLED state into 5018 * a state that indicates driver has started, it is ready to 5019 * receive driver commands 5020 */ 5021 if (SupplicantState.isDriverActive(state)) { 5022 transitionTo(mDriverStartedState); 5023 } 5024 break; 5025 case CMD_DRIVER_START_TIMED_OUT: 5026 if (message.arg1 == mDriverStartToken) { 5027 if (mTries >= 2) { 5028 loge("Failed to start driver after " + mTries); 5029 transitionTo(mDriverStoppedState); 5030 } else { 5031 loge("Driver start failed, retrying"); 5032 mWakeLock.acquire(); 5033 mWifiNative.startDriver(); 5034 mWakeLock.release(); 5035 5036 ++mTries; 5037 /* Send ourselves a delayed message to start driver again */ 5038 sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, 5039 ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); 5040 } 5041 } 5042 break; 5043 /* Queue driver commands & connection events */ 5044 case CMD_START_DRIVER: 5045 case CMD_STOP_DRIVER: 5046 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5047 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5048 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5049 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5050 case WifiMonitor.WPS_OVERLAP_EVENT: 5051 case CMD_SET_COUNTRY_CODE: 5052 case CMD_SET_FREQUENCY_BAND: 5053 case CMD_START_PACKET_FILTERING: 5054 case CMD_STOP_PACKET_FILTERING: 5055 case CMD_START_SCAN: 5056 case CMD_DISCONNECT: 5057 case CMD_REASSOCIATE: 5058 case CMD_RECONNECT: 5059 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5060 deferMessage(message); 5061 break; 5062 case WifiMonitor.SCAN_RESULTS_EVENT: 5063 // Loose scan results obtained in Driver Starting state, they can only confuse 5064 // the state machine 5065 break; 5066 default: 5067 return NOT_HANDLED; 5068 } 5069 return HANDLED; 5070 } 5071 } 5072 5073 class DriverStartedState extends State { 5074 @Override 5075 public void enter() { 5076 5077 if (PDBG) { 5078 loge("Driverstarted State enter"); 5079 } 5080 mIsRunning = true; 5081 mInDelayedStop = false; 5082 mDelayedStopCounter++; 5083 updateBatteryWorkSource(null); 5084 /** 5085 * Enable bluetooth coexistence scan mode when bluetooth connection is active. 5086 * When this mode is on, some of the low-level scan parameters used by the 5087 * driver are changed to reduce interference with bluetooth 5088 */ 5089 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5090 /* set country code */ 5091 setCountryCode(); 5092 /* set frequency band of operation */ 5093 setFrequencyBand(); 5094 /* initialize network state */ 5095 setNetworkDetailedState(DetailedState.DISCONNECTED); 5096 5097 /* Remove any filtering on Multicast v6 at start */ 5098 mWifiNative.stopFilteringMulticastV6Packets(); 5099 5100 /* Reset Multicast v4 filtering state */ 5101 if (mFilteringMulticastV4Packets.get()) { 5102 mWifiNative.startFilteringMulticastV4Packets(); 5103 } else { 5104 mWifiNative.stopFilteringMulticastV4Packets(); 5105 } 5106 5107 mDhcpActive = false; 5108 5109 startBatchedScan(); 5110 5111 if (mOperationalMode != CONNECT_MODE) { 5112 mWifiNative.disconnect(); 5113 mWifiConfigStore.disableAllNetworks(); 5114 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5115 setWifiState(WIFI_STATE_DISABLED); 5116 } 5117 transitionTo(mScanModeState); 5118 } else { 5119 5120 // Status pulls in the current supplicant state and network connection state 5121 // events over the monitor connection. This helps framework sync up with 5122 // current supplicant state 5123 // TODO: actually check th supplicant status string and make sure the supplicant 5124 // is in disconnecte4d state. 5125 mWifiNative.status(); 5126 // Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin 5127 transitionTo(mDisconnectedState); 5128 } 5129 5130 // We may have missed screen update at boot 5131 if (mScreenBroadcastReceived.get() == false) { 5132 PowerManager powerManager = (PowerManager)mContext.getSystemService( 5133 Context.POWER_SERVICE); 5134 handleScreenStateChanged(powerManager.isScreenOn(), 5135 /* startBackgroundScanIfNeeded = */ false); 5136 } else { 5137 // Set the right suspend mode settings 5138 mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 5139 && mUserWantsSuspendOpt.get()); 5140 } 5141 mWifiNative.setPowerSave(true); 5142 5143 if (mP2pSupported) { 5144 if (mOperationalMode == CONNECT_MODE) { 5145 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); 5146 } else { 5147 // P2P statemachine starts in disabled state, and is not enabled until 5148 // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to 5149 // keep it disabled. 5150 } 5151 } 5152 5153 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5154 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5155 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_ENABLED); 5156 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5157 5158 if (PDBG) { 5159 loge("Driverstarted State enter done"); 5160 } 5161 } 5162 5163 @Override 5164 public boolean processMessage(Message message) { 5165 logStateAndMessage(message, getClass().getSimpleName()); 5166 5167 switch(message.what) { 5168 case CMD_START_SCAN: 5169 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5170 break; 5171 case CMD_SET_BATCHED_SCAN: 5172 if (recordBatchedScanSettings(message.arg1, message.arg2, 5173 (Bundle)message.obj)) { 5174 if (mBatchedScanSettings != null) { 5175 startBatchedScan(); 5176 } else { 5177 stopBatchedScan(); 5178 } 5179 } 5180 break; 5181 case CMD_SET_COUNTRY_CODE: 5182 String country = (String) message.obj; 5183 final boolean persist = (message.arg2 == 1); 5184 final int sequence = message.arg1; 5185 if (sequence != mCountryCodeSequence.get()) { 5186 if (DBG) log("set country code ignored due to sequnce num"); 5187 break; 5188 } 5189 if (DBG) log("set country code " + country); 5190 if (persist) { 5191 mPersistedCountryCode = country; 5192 Settings.Global.putString(mContext.getContentResolver(), 5193 Settings.Global.WIFI_COUNTRY_CODE, 5194 country); 5195 } 5196 country = country.toUpperCase(Locale.ROOT); 5197 if (mLastSetCountryCode == null 5198 || country.equals(mLastSetCountryCode) == false) { 5199 if (mWifiNative.setCountryCode(country)) { 5200 mLastSetCountryCode = country; 5201 } else { 5202 loge("Failed to set country code " + country); 5203 } 5204 } 5205 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); 5206 break; 5207 case CMD_SET_FREQUENCY_BAND: 5208 int band = message.arg1; 5209 if (DBG) log("set frequency band " + band); 5210 if (mWifiNative.setBand(band)) { 5211 5212 if (PDBG) loge("did set frequency band " + band); 5213 5214 mFrequencyBand.set(band); 5215 // Flush old data - like scan results 5216 mWifiNative.bssFlush(); 5217 // Fetch the latest scan results when frequency band is set 5218 startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); 5219 5220 if (PDBG) loge("done set frequency band " + band); 5221 5222 } else { 5223 loge("Failed to set frequency band " + band); 5224 } 5225 break; 5226 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5227 mBluetoothConnectionActive = (message.arg1 != 5228 BluetoothAdapter.STATE_DISCONNECTED); 5229 mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); 5230 break; 5231 case CMD_STOP_DRIVER: 5232 int mode = message.arg1; 5233 5234 /* Already doing a delayed stop */ 5235 if (mInDelayedStop) { 5236 if (DBG) log("Already in delayed stop"); 5237 break; 5238 } 5239 /* disconnect right now, but leave the driver running for a bit */ 5240 mWifiConfigStore.disableAllNetworks(); 5241 5242 mInDelayedStop = true; 5243 mDelayedStopCounter++; 5244 if (DBG) log("Delayed stop message " + mDelayedStopCounter); 5245 5246 /* send regular delayed shut down */ 5247 Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); 5248 driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); 5249 mDriverStopIntent = PendingIntent.getBroadcast(mContext, 5250 DRIVER_STOP_REQUEST, driverStopIntent, 5251 PendingIntent.FLAG_UPDATE_CURRENT); 5252 5253 mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() 5254 + mDriverStopDelayMs, mDriverStopIntent); 5255 break; 5256 case CMD_START_DRIVER: 5257 if (mInDelayedStop) { 5258 mInDelayedStop = false; 5259 mDelayedStopCounter++; 5260 mAlarmManager.cancel(mDriverStopIntent); 5261 if (DBG) log("Delayed stop ignored due to start"); 5262 if (mOperationalMode == CONNECT_MODE) { 5263 mWifiConfigStore.enableAllNetworks(); 5264 } 5265 } 5266 break; 5267 case CMD_DELAYED_STOP_DRIVER: 5268 if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); 5269 if (message.arg1 != mDelayedStopCounter) break; 5270 if (getCurrentState() != mDisconnectedState) { 5271 mWifiNative.disconnect(); 5272 handleNetworkDisconnect(); 5273 } 5274 mWakeLock.acquire(); 5275 mWifiNative.stopDriver(); 5276 mWakeLock.release(); 5277 if (mP2pSupported) { 5278 transitionTo(mWaitForP2pDisableState); 5279 } else { 5280 transitionTo(mDriverStoppingState); 5281 } 5282 break; 5283 case CMD_START_PACKET_FILTERING: 5284 if (message.arg1 == MULTICAST_V6) { 5285 mWifiNative.startFilteringMulticastV6Packets(); 5286 } else if (message.arg1 == MULTICAST_V4) { 5287 mWifiNative.startFilteringMulticastV4Packets(); 5288 } else { 5289 loge("Illegal arugments to CMD_START_PACKET_FILTERING"); 5290 } 5291 break; 5292 case CMD_STOP_PACKET_FILTERING: 5293 if (message.arg1 == MULTICAST_V6) { 5294 mWifiNative.stopFilteringMulticastV6Packets(); 5295 } else if (message.arg1 == MULTICAST_V4) { 5296 mWifiNative.stopFilteringMulticastV4Packets(); 5297 } else { 5298 loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); 5299 } 5300 break; 5301 case CMD_SET_SUSPEND_OPT_ENABLED: 5302 if (message.arg1 == 1) { 5303 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); 5304 mSuspendWakeLock.release(); 5305 } else { 5306 setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); 5307 } 5308 break; 5309 case CMD_SET_HIGH_PERF_MODE: 5310 if (message.arg1 == 1) { 5311 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false); 5312 } else { 5313 setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); 5314 } 5315 break; 5316 case CMD_ENABLE_TDLS: 5317 if (message.obj != null) { 5318 String remoteAddress = (String) message.obj; 5319 boolean enable = (message.arg1 == 1); 5320 mWifiNative.startTdls(remoteAddress, enable); 5321 } 5322 break; 5323 default: 5324 return NOT_HANDLED; 5325 } 5326 return HANDLED; 5327 } 5328 @Override 5329 public void exit() { 5330 mIsRunning = false; 5331 updateBatteryWorkSource(null); 5332 mScanResults = new ArrayList<ScanResult>(); 5333 5334 stopBatchedScan(); 5335 5336 final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE); 5337 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 5338 intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED); 5339 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 5340 noteScanEnd(); // wrap up any pending request. 5341 mBufferedScanMsg.clear(); 5342 5343 mLastSetCountryCode = null; 5344 } 5345 } 5346 5347 class WaitForP2pDisableState extends State { 5348 private State mTransitionToState; 5349 @Override 5350 public void enter() { 5351 switch (getCurrentMessage().what) { 5352 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5353 mTransitionToState = mInitialState; 5354 break; 5355 case CMD_DELAYED_STOP_DRIVER: 5356 mTransitionToState = mDriverStoppingState; 5357 break; 5358 case CMD_STOP_SUPPLICANT: 5359 mTransitionToState = mSupplicantStoppingState; 5360 break; 5361 default: 5362 mTransitionToState = mDriverStoppingState; 5363 break; 5364 } 5365 mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); 5366 } 5367 @Override 5368 public boolean processMessage(Message message) { 5369 logStateAndMessage(message, getClass().getSimpleName()); 5370 5371 switch(message.what) { 5372 case WifiStateMachine.CMD_DISABLE_P2P_RSP: 5373 transitionTo(mTransitionToState); 5374 break; 5375 /* Defer wifi start/shut and driver commands */ 5376 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5377 case CMD_START_SUPPLICANT: 5378 case CMD_STOP_SUPPLICANT: 5379 case CMD_START_AP: 5380 case CMD_STOP_AP: 5381 case CMD_START_DRIVER: 5382 case CMD_STOP_DRIVER: 5383 case CMD_SET_OPERATIONAL_MODE: 5384 case CMD_SET_COUNTRY_CODE: 5385 case CMD_SET_FREQUENCY_BAND: 5386 case CMD_START_PACKET_FILTERING: 5387 case CMD_STOP_PACKET_FILTERING: 5388 case CMD_START_SCAN: 5389 case CMD_DISCONNECT: 5390 case CMD_REASSOCIATE: 5391 case CMD_RECONNECT: 5392 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5393 deferMessage(message); 5394 break; 5395 default: 5396 return NOT_HANDLED; 5397 } 5398 return HANDLED; 5399 } 5400 } 5401 5402 class DriverStoppingState extends State { 5403 @Override 5404 public boolean processMessage(Message message) { 5405 logStateAndMessage(message, getClass().getSimpleName()); 5406 5407 switch(message.what) { 5408 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5409 SupplicantState state = handleSupplicantStateChange(message); 5410 if (state == SupplicantState.INTERFACE_DISABLED) { 5411 transitionTo(mDriverStoppedState); 5412 } 5413 break; 5414 /* Queue driver commands */ 5415 case CMD_START_DRIVER: 5416 case CMD_STOP_DRIVER: 5417 case CMD_SET_COUNTRY_CODE: 5418 case CMD_SET_FREQUENCY_BAND: 5419 case CMD_START_PACKET_FILTERING: 5420 case CMD_STOP_PACKET_FILTERING: 5421 case CMD_START_SCAN: 5422 case CMD_DISCONNECT: 5423 case CMD_REASSOCIATE: 5424 case CMD_RECONNECT: 5425 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 5426 deferMessage(message); 5427 break; 5428 default: 5429 return NOT_HANDLED; 5430 } 5431 return HANDLED; 5432 } 5433 } 5434 5435 class DriverStoppedState extends State { 5436 @Override 5437 public boolean processMessage(Message message) { 5438 logStateAndMessage(message, getClass().getSimpleName()); 5439 switch (message.what) { 5440 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5441 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 5442 SupplicantState state = stateChangeResult.state; 5443 // A WEXT bug means that we can be back to driver started state 5444 // unexpectedly 5445 if (SupplicantState.isDriverActive(state)) { 5446 transitionTo(mDriverStartedState); 5447 } 5448 break; 5449 case CMD_START_DRIVER: 5450 mWakeLock.acquire(); 5451 mWifiNative.startDriver(); 5452 mWakeLock.release(); 5453 transitionTo(mDriverStartingState); 5454 break; 5455 default: 5456 return NOT_HANDLED; 5457 } 5458 return HANDLED; 5459 } 5460 } 5461 5462 class ScanModeState extends State { 5463 private int mLastOperationMode; 5464 @Override 5465 public void enter() { 5466 mLastOperationMode = mOperationalMode; 5467 } 5468 @Override 5469 public boolean processMessage(Message message) { 5470 logStateAndMessage(message, getClass().getSimpleName()); 5471 5472 switch(message.what) { 5473 case CMD_SET_OPERATIONAL_MODE: 5474 if (message.arg1 == CONNECT_MODE) { 5475 5476 if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 5477 setWifiState(WIFI_STATE_ENABLED); 5478 // Load and re-enable networks when going back to enabled state 5479 // This is essential for networks to show up after restore 5480 mWifiConfigStore.loadAndEnableAllNetworks(); 5481 mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); 5482 } else { 5483 mWifiConfigStore.enableAllNetworks(); 5484 } 5485 5486 mWifiNative.reconnect(); 5487 5488 mOperationalMode = CONNECT_MODE; 5489 transitionTo(mDisconnectedState); 5490 } else { 5491 // Nothing to do 5492 return HANDLED; 5493 } 5494 break; 5495 // Handle scan. All the connection related commands are 5496 // handled only in ConnectModeState 5497 case CMD_START_SCAN: 5498 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 5499 break; 5500 default: 5501 return NOT_HANDLED; 5502 } 5503 return HANDLED; 5504 } 5505 } 5506 5507 5508 String smToString(Message message) { 5509 return smToString(message.what); 5510 } 5511 5512 String smToString(int what) { 5513 String s = "unknown"; 5514 switch (what) { 5515 case WifiMonitor.DRIVER_HUNG_EVENT: 5516 s = "DRIVER_HUNG_EVENT"; 5517 break; 5518 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: 5519 s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED"; 5520 break; 5521 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: 5522 s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED"; 5523 break; 5524 case CMD_SET_FREQUENCY_BAND: 5525 s = "CMD_SET_FREQUENCY_BAND"; 5526 break; 5527 case CMD_DELAYED_NETWORK_DISCONNECT: 5528 s = "CMD_DELAYED_NETWORK_DISCONNECT"; 5529 break; 5530 case CMD_TEST_NETWORK_DISCONNECT: 5531 s = "CMD_TEST_NETWORK_DISCONNECT"; 5532 break; 5533 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 5534 s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; 5535 break; 5536 case CMD_START_DRIVER: 5537 s = "CMD_START_DRIVER"; 5538 break; 5539 case CMD_STOP_DRIVER: 5540 s = "CMD_STOP_DRIVER"; 5541 break; 5542 case CMD_STOP_SUPPLICANT: 5543 s = "CMD_STOP_SUPPLICANT"; 5544 break; 5545 case CMD_STOP_SUPPLICANT_FAILED: 5546 s = "CMD_STOP_SUPPLICANT_FAILED"; 5547 break; 5548 case CMD_START_SUPPLICANT: 5549 s = "CMD_START_SUPPLICANT"; 5550 break; 5551 case CMD_REQUEST_AP_CONFIG: 5552 s = "CMD_REQUEST_AP_CONFIG"; 5553 break; 5554 case CMD_RESPONSE_AP_CONFIG: 5555 s = "CMD_RESPONSE_AP_CONFIG"; 5556 break; 5557 case CMD_TETHER_STATE_CHANGE: 5558 s = "CMD_TETHER_STATE_CHANGE"; 5559 break; 5560 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 5561 s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; 5562 break; 5563 case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: 5564 s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; 5565 break; 5566 case CMD_ADD_OR_UPDATE_NETWORK: 5567 s = "CMD_ADD_OR_UPDATE_NETWORK"; 5568 break; 5569 case CMD_REMOVE_NETWORK: 5570 s = "CMD_REMOVE_NETWORK"; 5571 break; 5572 case CMD_ENABLE_NETWORK: 5573 s = "CMD_ENABLE_NETWORK"; 5574 break; 5575 case CMD_ENABLE_ALL_NETWORKS: 5576 s = "CMD_ENABLE_ALL_NETWORKS"; 5577 break; 5578 case CMD_AUTO_CONNECT: 5579 s = "CMD_AUTO_CONNECT"; 5580 break; 5581 case CMD_AUTO_ROAM: 5582 s = "CMD_AUTO_ROAM"; 5583 break; 5584 case CMD_AUTO_SAVE_NETWORK: 5585 s = "CMD_AUTO_SAVE_NETWORK"; 5586 break; 5587 case CMD_BOOT_COMPLETED: 5588 s = "CMD_BOOT_COMPLETED"; 5589 break; 5590 case DhcpStateMachine.CMD_START_DHCP: 5591 s = "CMD_START_DHCP"; 5592 break; 5593 case DhcpStateMachine.CMD_STOP_DHCP: 5594 s = "CMD_STOP_DHCP"; 5595 break; 5596 case DhcpStateMachine.CMD_RENEW_DHCP: 5597 s = "CMD_RENEW_DHCP"; 5598 break; 5599 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 5600 s = "CMD_PRE_DHCP_ACTION"; 5601 break; 5602 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 5603 s = "CMD_POST_DHCP_ACTION"; 5604 break; 5605 case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: 5606 s = "CMD_PRE_DHCP_ACTION_COMPLETE"; 5607 break; 5608 case DhcpStateMachine.CMD_ON_QUIT: 5609 s = "CMD_ON_QUIT"; 5610 break; 5611 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 5612 s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; 5613 break; 5614 case WifiManager.DISABLE_NETWORK: 5615 s = "WifiManager.DISABLE_NETWORK"; 5616 break; 5617 case CMD_BLACKLIST_NETWORK: 5618 s = "CMD_BLACKLIST_NETWORK"; 5619 break; 5620 case CMD_CLEAR_BLACKLIST: 5621 s = "CMD_CLEAR_BLACKLIST"; 5622 break; 5623 case CMD_SAVE_CONFIG: 5624 s = "CMD_SAVE_CONFIG"; 5625 break; 5626 case CMD_GET_CONFIGURED_NETWORKS: 5627 s = "CMD_GET_CONFIGURED_NETWORKS"; 5628 break; 5629 case CMD_GET_SUPPORTED_FEATURES: 5630 s = "CMD_GET_ADAPTORS"; 5631 break; 5632 case CMD_UNWANTED_NETWORK: 5633 s = "CMD_UNWANTED_NETWORK"; 5634 break; 5635 case CMD_GET_LINK_LAYER_STATS: 5636 s = "CMD_GET_LINK_LAYER_STATS"; 5637 break; 5638 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 5639 s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; 5640 break; 5641 case CMD_DISCONNECT: 5642 s = "CMD_DISCONNECT"; 5643 break; 5644 case CMD_RECONNECT: 5645 s = "CMD_RECONNECT"; 5646 break; 5647 case CMD_REASSOCIATE: 5648 s = "CMD_REASSOCIATE"; 5649 break; 5650 case CMD_GET_CONNECTION_STATISTICS: 5651 s = "CMD_GET_CONNECTION_STATISTICS"; 5652 break; 5653 case CMD_SET_HIGH_PERF_MODE: 5654 s = "CMD_SET_HIGH_PERF_MODE"; 5655 break; 5656 case CMD_SET_COUNTRY_CODE: 5657 s = "CMD_SET_COUNTRY_CODE"; 5658 break; 5659 case CMD_ENABLE_RSSI_POLL: 5660 s = "CMD_ENABLE_RSSI_POLL"; 5661 break; 5662 case CMD_RSSI_POLL: 5663 s = "CMD_RSSI_POLL"; 5664 break; 5665 case CMD_START_PACKET_FILTERING: 5666 s = "CMD_START_PACKET_FILTERING"; 5667 break; 5668 case CMD_STOP_PACKET_FILTERING: 5669 s = "CMD_STOP_PACKET_FILTERING"; 5670 break; 5671 case CMD_SET_SUSPEND_OPT_ENABLED: 5672 s = "CMD_SET_SUSPEND_OPT_ENABLED"; 5673 break; 5674 case CMD_NO_NETWORKS_PERIODIC_SCAN: 5675 s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; 5676 break; 5677 case CMD_SET_BATCHED_SCAN: 5678 s = "CMD_SET_BATCHED_SCAN"; 5679 break; 5680 case CMD_START_NEXT_BATCHED_SCAN: 5681 s = "CMD_START_NEXT_BATCHED_SCAN"; 5682 break; 5683 case CMD_POLL_BATCHED_SCAN: 5684 s = "CMD_POLL_BATCHED_SCAN"; 5685 break; 5686 case CMD_UPDATE_LINKPROPERTIES: 5687 s = "CMD_UPDATE_LINKPROPERTIES"; 5688 break; 5689 case CMD_RELOAD_TLS_AND_RECONNECT: 5690 s = "CMD_RELOAD_TLS_AND_RECONNECT"; 5691 break; 5692 case WifiManager.CONNECT_NETWORK: 5693 s = "CONNECT_NETWORK"; 5694 break; 5695 case WifiManager.SAVE_NETWORK: 5696 s = "SAVE_NETWORK"; 5697 break; 5698 case WifiManager.FORGET_NETWORK: 5699 s = "FORGET_NETWORK"; 5700 break; 5701 case WifiMonitor.SUP_CONNECTION_EVENT: 5702 s = "SUP_CONNECTION_EVENT"; 5703 break; 5704 case WifiMonitor.SUP_DISCONNECTION_EVENT: 5705 s = "SUP_DISCONNECTION_EVENT"; 5706 break; 5707 case WifiMonitor.SCAN_RESULTS_EVENT: 5708 s = "SCAN_RESULTS_EVENT"; 5709 break; 5710 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5711 s = "SUPPLICANT_STATE_CHANGE_EVENT"; 5712 break; 5713 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5714 s = "AUTHENTICATION_FAILURE_EVENT"; 5715 break; 5716 case WifiMonitor.SSID_TEMP_DISABLED: 5717 s = "SSID_TEMP_DISABLED"; 5718 break; 5719 case WifiMonitor.SSID_REENABLED: 5720 s = "SSID_REENABLED"; 5721 break; 5722 case WifiMonitor.WPS_SUCCESS_EVENT: 5723 s = "WPS_SUCCESS_EVENT"; 5724 break; 5725 case WifiMonitor.WPS_FAIL_EVENT: 5726 s = "WPS_FAIL_EVENT"; 5727 break; 5728 case WifiMonitor.SUP_REQUEST_IDENTITY: 5729 s = "SUP_REQUEST_IDENTITY"; 5730 break; 5731 case WifiMonitor.NETWORK_CONNECTION_EVENT: 5732 s = "NETWORK_CONNECTION_EVENT"; 5733 break; 5734 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 5735 s = "NETWORK_DISCONNECTION_EVENT"; 5736 break; 5737 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5738 s = "ASSOCIATION_REJECTION_EVENT"; 5739 break; 5740 case CMD_SET_OPERATIONAL_MODE: 5741 s = "CMD_SET_OPERATIONAL_MODE"; 5742 break; 5743 case CMD_START_SCAN: 5744 s = "CMD_START_SCAN"; 5745 break; 5746 case CMD_DISABLE_P2P_RSP: 5747 s = "CMD_DISABLE_P2P_RSP"; 5748 break; 5749 case CMD_DISABLE_P2P_REQ: 5750 s = "CMD_DISABLE_P2P_REQ"; 5751 break; 5752 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 5753 s = "GOOD_LINK_DETECTED"; 5754 break; 5755 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 5756 s = "POOR_LINK_DETECTED"; 5757 break; 5758 case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: 5759 s = "GROUP_CREATING_TIMED_OUT"; 5760 break; 5761 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 5762 s = "P2P_CONNECTION_CHANGED"; 5763 break; 5764 case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: 5765 s = "P2P.DISCONNECT_WIFI_RESPONSE"; 5766 break; 5767 case WifiP2pServiceImpl.SET_MIRACAST_MODE: 5768 s = "P2P.SET_MIRACAST_MODE"; 5769 break; 5770 case WifiP2pServiceImpl.BLOCK_DISCOVERY: 5771 s = "P2P.BLOCK_DISCOVERY"; 5772 break; 5773 case WifiP2pServiceImpl.SET_COUNTRY_CODE: 5774 s = "P2P.SET_COUNTRY_CODE"; 5775 break; 5776 case WifiManager.CANCEL_WPS: 5777 s = "CANCEL_WPS"; 5778 break; 5779 case WifiManager.CANCEL_WPS_FAILED: 5780 s = "CANCEL_WPS_FAILED"; 5781 break; 5782 case WifiManager.CANCEL_WPS_SUCCEDED: 5783 s = "CANCEL_WPS_SUCCEDED"; 5784 break; 5785 case WifiManager.START_WPS: 5786 s = "START_WPS"; 5787 break; 5788 case WifiManager.START_WPS_SUCCEEDED: 5789 s = "START_WPS_SUCCEEDED"; 5790 break; 5791 case WifiManager.WPS_FAILED: 5792 s = "WPS_FAILED"; 5793 break; 5794 case WifiManager.WPS_COMPLETED: 5795 s = "WPS_COMPLETED"; 5796 break; 5797 case WifiManager.RSSI_PKTCNT_FETCH: 5798 s = "RSSI_PKTCNT_FETCH"; 5799 break; 5800 case CMD_IP_CONFIGURATION_LOST: 5801 s = "CMD_IP_CONFIGURATION_LOST"; 5802 break; 5803 case CMD_IP_CONFIGURATION_SUCCESSFUL: 5804 s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; 5805 break; 5806 case CMD_STATIC_IP_SUCCESS: 5807 s = "CMD_STATIC_IP_SUCCESSFUL"; 5808 break; 5809 case CMD_STATIC_IP_FAILURE: 5810 s = "CMD_STATIC_IP_FAILURE"; 5811 break; 5812 case DhcpStateMachine.DHCP_SUCCESS: 5813 s = "DHCP_SUCCESS"; 5814 break; 5815 case DhcpStateMachine.DHCP_FAILURE: 5816 s = "DHCP_FAILURE"; 5817 break; 5818 case CMD_TARGET_BSSID: 5819 s = "CMD_TARGET_BSSID"; 5820 break; 5821 case CMD_ASSOCIATED_BSSID: 5822 s = "CMD_ASSOCIATED_BSSID"; 5823 break; 5824 case CMD_ROAM_WATCHDOG_TIMER: 5825 s = "CMD_ROAM_WATCHDOG_TIMER"; 5826 break; 5827 case CMD_SCREEN_STATE_CHANGED: 5828 s = "CMD_SCREEN_STATE_CHANGED"; 5829 break; 5830 case CMD_DISCONNECTING_WATCHDOG_TIMER: 5831 s = "CMD_DISCONNECTING_WATCHDOG_TIMER"; 5832 break; 5833 default: 5834 s = "what:" + Integer.toString(what); 5835 break; 5836 } 5837 return s; 5838 } 5839 5840 void registerConnected() { 5841 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 5842 long now_ms = System.currentTimeMillis(); 5843 // We are switching away from this configuration, 5844 // hence record the time we were connected last 5845 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 5846 if (config != null) { 5847 config.lastConnected = System.currentTimeMillis(); 5848 config.autoJoinBailedDueToLowRssi = false; 5849 config.setAutoJoinStatus(WifiConfiguration.AUTO_JOIN_ENABLED); 5850 config.numConnectionFailures = 0; 5851 config.numIpConfigFailures = 0; 5852 config.numAuthFailures = 0; 5853 config.numAssociation++; 5854 } 5855 mBadLinkspeedcount = 0; 5856 } 5857 } 5858 5859 void registerDisconnected() { 5860 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 5861 long now_ms = System.currentTimeMillis(); 5862 // We are switching away from this configuration, 5863 // hence record the time we were connected last 5864 WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 5865 if (config != null) { 5866 config.lastDisconnected = System.currentTimeMillis(); 5867 } 5868 } 5869 } 5870 5871 void noteWifiDisabledWhileAssociated() { 5872 // We got disabled by user while we were associated, make note of it 5873 int rssi = mWifiInfo.getRssi(); 5874 WifiConfiguration config = getCurrentWifiConfiguration(); 5875 if (getCurrentState() == mConnectedState 5876 && rssi != WifiInfo.INVALID_RSSI 5877 && config != null) { 5878 boolean is24GHz = mWifiInfo.is24GHz(); 5879 boolean isBadRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdBadRssi24) 5880 || (!is24GHz && rssi < mWifiConfigStore.thresholdBadRssi5); 5881 boolean isLowRSSI = (is24GHz && rssi < mWifiConfigStore.thresholdLowRssi24) 5882 || (!is24GHz && mWifiInfo.getRssi() < mWifiConfigStore.thresholdLowRssi5); 5883 boolean isHighRSSI = (is24GHz && rssi >= mWifiConfigStore.thresholdGoodRssi24) 5884 || (!is24GHz && mWifiInfo.getRssi() >= mWifiConfigStore.thresholdGoodRssi5); 5885 if (isBadRSSI) { 5886 // Take note that we got disabled while RSSI was Bad 5887 config.numUserTriggeredWifiDisableLowRSSI++; 5888 } else if (isLowRSSI) { 5889 // Take note that we got disabled while RSSI was Low 5890 config.numUserTriggeredWifiDisableBadRSSI++; 5891 } else if (!isHighRSSI) { 5892 // Take note that we got disabled while RSSI was Not high 5893 config.numUserTriggeredWifiDisableNotHighRSSI++; 5894 } 5895 } 5896 } 5897 5898 void setInternetAccessState(boolean enabled) { 5899 WifiConfiguration config = getCurrentWifiConfiguration(); 5900 if (config != null) { 5901 config.noInternetAccess = enabled; 5902 } 5903 } 5904 5905 WifiConfiguration getCurrentWifiConfiguration() { 5906 if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { 5907 return null; 5908 } 5909 return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); 5910 } 5911 5912 ScanResult getCurrentScanResult() { 5913 WifiConfiguration config = getCurrentWifiConfiguration(); 5914 if (config == null) { 5915 return null; 5916 } 5917 String BSSID = mWifiInfo.getBSSID(); 5918 if (BSSID == null) { 5919 BSSID = mTargetRoamBSSID; 5920 } 5921 if (config.scanResultCache == null) { 5922 return null; 5923 } 5924 return config.scanResultCache.get(BSSID); 5925 } 5926 5927 String getCurrentBSSID() { 5928 if (linkDebouncing) { 5929 return null; 5930 } 5931 return mLastBssid; 5932 } 5933 5934 class ConnectModeState extends State { 5935 @Override 5936 public boolean processMessage(Message message) { 5937 WifiConfiguration config; 5938 int netId; 5939 boolean ok; 5940 boolean didDisconnect; 5941 String bssid; 5942 String ssid; 5943 NetworkUpdateResult result; 5944 logStateAndMessage(message, getClass().getSimpleName()); 5945 5946 switch (message.what) { 5947 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 5948 didBlackListBSSID = false; 5949 bssid = (String) message.obj; 5950 if (bssid == null || TextUtils.isEmpty(bssid)) { 5951 // If BSSID is null, use the target roam BSSID 5952 bssid = mTargetRoamBSSID; 5953 } 5954 if (bssid != null) { 5955 // If we have a BSSID, tell configStore to black list it 5956 synchronized(mScanResultCache) { 5957 didBlackListBSSID = mWifiConfigStore.handleBSSIDBlackList 5958 (mLastNetworkId, bssid, false); 5959 } 5960 } 5961 mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); 5962 break; 5963 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 5964 mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); 5965 break; 5966 case WifiMonitor.SSID_TEMP_DISABLED: 5967 case WifiMonitor.SSID_REENABLED: 5968 String substr = (String) message.obj; 5969 String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? 5970 "temp-disabled" : "re-enabled"; 5971 loge("ConnectModeState SSID state=" + en + " nid=" 5972 + Integer.toString(message.arg1) + " [" + substr + "]"); 5973 synchronized(mScanResultCache) { 5974 mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == 5975 WifiMonitor.SSID_REENABLED, substr, mWifiInfo.getBSSID()); 5976 } 5977 break; 5978 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 5979 SupplicantState state = handleSupplicantStateChange(message); 5980 // A driver/firmware hang can now put the interface in a down state. 5981 // We detect the interface going down and recover from it 5982 if (!SupplicantState.isDriverActive(state)) { 5983 if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 5984 handleNetworkDisconnect(); 5985 } 5986 log("Detected an interface down, restart driver"); 5987 transitionTo(mDriverStoppedState); 5988 sendMessage(CMD_START_DRIVER); 5989 break; 5990 } 5991 5992 // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT 5993 // when authentication times out after a successful connection, 5994 // we can figure this from the supplicant state. If supplicant 5995 // state is DISCONNECTED, but the mNetworkInfo says we are not 5996 // disconnected, we need to handle a disconnection 5997 if (!linkDebouncing && state == SupplicantState.DISCONNECTED && 5998 mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { 5999 if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); 6000 handleNetworkDisconnect(); 6001 transitionTo(mDisconnectedState); 6002 } 6003 break; 6004 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6005 if (message.arg1 == 1) { 6006 mWifiNative.disconnect(); 6007 mTemporarilyDisconnectWifi = true; 6008 } else { 6009 mWifiNative.reconnect(); 6010 mTemporarilyDisconnectWifi = false; 6011 } 6012 break; 6013 case CMD_ADD_OR_UPDATE_NETWORK: 6014 config = (WifiConfiguration) message.obj; 6015 int res = mWifiConfigStore.addOrUpdateNetwork(config, message.sendingUid); 6016 if (res < 0) { 6017 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6018 } else { 6019 WifiConfiguration curConfig = getCurrentWifiConfiguration(); 6020 if (curConfig != null && config != null) { 6021 if (curConfig.priority < config.priority 6022 && config.status == WifiConfiguration.Status.ENABLED) { 6023 // Interpret this as a connect attempt 6024 // Set the last selected configuration so as to allow the system to 6025 // stick the last user choice without persisting the choice 6026 mWifiConfigStore.setLastSelectedConfiguration(res); 6027 6028 // Remember time of last connection attempt 6029 lastConnectAttempt = System.currentTimeMillis(); 6030 6031 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6032 6033 // As a courtesy to the caller, trigger a scan now 6034 startScan(ADD_OR_UPDATE_SOURCE, 0, null, null); 6035 } 6036 } 6037 } 6038 replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, res); 6039 break; 6040 case CMD_REMOVE_NETWORK: 6041 ok = mWifiConfigStore.removeNetwork(message.arg1); 6042 if (!ok) { 6043 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6044 } 6045 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6046 break; 6047 case CMD_ENABLE_NETWORK: 6048 boolean others = message.arg2 == 1; 6049 // Tell autojoin the user did try to select to that network 6050 // However, do NOT persist the choice by bumping the priority of the network 6051 if (others) { 6052 mWifiAutoJoinController. 6053 updateConfigurationHistory(message.arg1, true, false); 6054 // Set the last selected configuration so as to allow the system to 6055 // stick the last user choice without persisting the choice 6056 mWifiConfigStore.setLastSelectedConfiguration(message.arg1); 6057 6058 // Remember time of last connection attempt 6059 lastConnectAttempt = System.currentTimeMillis(); 6060 6061 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6062 } 6063 // Cancel auto roam requests 6064 autoRoamSetBSSID(message.arg1, "any"); 6065 6066 ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1); 6067 if (!ok) { 6068 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6069 } 6070 replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); 6071 break; 6072 case CMD_ENABLE_ALL_NETWORKS: 6073 long time = android.os.SystemClock.elapsedRealtime(); 6074 if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { 6075 mWifiConfigStore.enableAllNetworks(); 6076 mLastEnableAllNetworksTime = time; 6077 } 6078 break; 6079 case WifiManager.DISABLE_NETWORK: 6080 if (mWifiConfigStore.disableNetwork(message.arg1, 6081 WifiConfiguration.DISABLED_BY_WIFI_MANAGER) == true) { 6082 replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); 6083 } else { 6084 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6085 replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, 6086 WifiManager.ERROR); 6087 } 6088 break; 6089 case CMD_BLACKLIST_NETWORK: 6090 mWifiNative.addToBlacklist((String) message.obj); 6091 break; 6092 case CMD_CLEAR_BLACKLIST: 6093 mWifiNative.clearBlacklist(); 6094 break; 6095 case CMD_SAVE_CONFIG: 6096 ok = mWifiConfigStore.saveConfig(); 6097 6098 if (DBG) loge("wifistatemachine did save config " + ok); 6099 replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); 6100 6101 // Inform the backup manager about a data change 6102 IBackupManager ibm = IBackupManager.Stub.asInterface( 6103 ServiceManager.getService(Context.BACKUP_SERVICE)); 6104 if (ibm != null) { 6105 try { 6106 ibm.dataChanged("com.android.providers.settings"); 6107 } catch (Exception e) { 6108 // Try again later 6109 } 6110 } 6111 break; 6112 case CMD_GET_CONFIGURED_NETWORKS: 6113 replyToMessage(message, message.what, 6114 mWifiConfigStore.getConfiguredNetworks()); 6115 break; 6116 case WifiMonitor.SUP_REQUEST_IDENTITY: 6117 // Supplicant lacks credentials to connect to that network, hence black list 6118 ssid = (String) message.obj; 6119 6120 if (targetWificonfiguration != null && ssid != null 6121 && targetWificonfiguration.SSID != null 6122 && targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) { 6123 mWifiConfigStore.handleSSIDStateChange(targetWificonfiguration.networkId, 6124 false, "AUTH_FAILED no identity", null); 6125 } 6126 // Disconnect now, as we don't have any way to fullfill the supplicant request. 6127 mWifiConfigStore.setLastSelectedConfiguration 6128 (WifiConfiguration.INVALID_NETWORK_ID); 6129 mWifiNative.disconnect(); 6130 break; 6131 case WifiMonitor.SUP_REQUEST_SIM_AUTH: 6132 logd("Received SUP_REQUEST_SIM_AUTH"); 6133 SimAuthRequestData requestData = (SimAuthRequestData) message.obj; 6134 if (requestData != null) { 6135 if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { 6136 handleGsmAuthRequest(requestData); 6137 } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA) { 6138 handle3GAuthRequest(requestData); 6139 } 6140 } else { 6141 loge("Invalid sim auth request"); 6142 } 6143 break; 6144 case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: 6145 replyToMessage(message, message.what, 6146 mWifiConfigStore.getPrivilegedConfiguredNetworks()); 6147 break; 6148 /* Do a redundant disconnect without transition */ 6149 case CMD_DISCONNECT: 6150 mWifiConfigStore.setLastSelectedConfiguration 6151 (WifiConfiguration.INVALID_NETWORK_ID); 6152 mWifiNative.disconnect(); 6153 break; 6154 case CMD_RECONNECT: 6155 lastConnectAttempt = System.currentTimeMillis(); 6156 mWifiNative.reconnect(); 6157 break; 6158 case CMD_REASSOCIATE: 6159 lastConnectAttempt = System.currentTimeMillis(); 6160 mWifiNative.reassociate(); 6161 break; 6162 case CMD_RELOAD_TLS_AND_RECONNECT: 6163 if (mWifiConfigStore.needsUnlockedKeyStore()) { 6164 logd("Reconnecting to give a chance to un-connected TLS networks"); 6165 mWifiNative.disconnect(); 6166 lastConnectAttempt = System.currentTimeMillis(); 6167 mWifiNative.reconnect(); 6168 } 6169 break; 6170 case CMD_AUTO_ROAM: 6171 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 6172 return HANDLED; 6173 case CMD_AUTO_CONNECT: 6174 /* Work Around: wpa_supplicant can get in a bad state where it returns a non 6175 * associated status to the STATUS command but somehow-someplace still thinks 6176 * it is associated and thus will ignore select/reconnect command with 6177 * following message: 6178 * "Already associated with the selected network - do nothing" 6179 * 6180 * Hence, sends a disconnect to supplicant first. 6181 */ 6182 didDisconnect = false; 6183 if (getCurrentState() != mDisconnectedState) { 6184 /** Supplicant will ignore the reconnect if we are currently associated, 6185 * hence trigger a disconnect 6186 */ 6187 didDisconnect = true; 6188 mWifiNative.disconnect(); 6189 } 6190 6191 /* connect command coming from auto-join */ 6192 config = (WifiConfiguration) message.obj; 6193 netId = message.arg1; 6194 int roam = message.arg2; 6195 loge("CMD_AUTO_CONNECT sup state " 6196 + mSupplicantStateTracker.getSupplicantStateName() 6197 + " my state " + getCurrentState().getName() 6198 + " nid=" + Integer.toString(netId) 6199 + " roam=" + Integer.toString(roam)); 6200 if (config == null) { 6201 loge("AUTO_CONNECT and no config, bail out..."); 6202 break; 6203 } 6204 6205 /* Make sure we cancel any previous roam request */ 6206 autoRoamSetBSSID(netId, config.BSSID); 6207 6208 /* Save the network config */ 6209 loge("CMD_AUTO_CONNECT will save config -> " + config.SSID 6210 + " nid=" + Integer.toString(netId)); 6211 result = mWifiConfigStore.saveNetwork(config, -1); 6212 netId = result.getNetworkId(); 6213 loge("CMD_AUTO_CONNECT did save config -> " 6214 + " nid=" + Integer.toString(netId)); 6215 6216 // Make sure the network is enabled, since supplicant will not reenable it 6217 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6218 6219 if (mWifiConfigStore.selectNetwork(netId) && 6220 mWifiNative.reconnect()) { 6221 lastConnectAttempt = System.currentTimeMillis(); 6222 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6223 // We selected a better config, 6224 // maybe because we could not see the last user 6225 // selection, then forget it. We will remember the selection 6226 // only if it was persisted. 6227 mWifiConfigStore. 6228 setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); 6229 6230 mAutoRoaming = roam; 6231 if (isRoaming() || linkDebouncing) { 6232 transitionTo(mRoamingState); 6233 } else if (didDisconnect) { 6234 transitionTo(mDisconnectingState); 6235 } else { 6236 transitionTo(mDisconnectedState); 6237 } 6238 } else { 6239 loge("Failed to connect config: " + config + " netId: " + netId); 6240 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6241 WifiManager.ERROR); 6242 break; 6243 } 6244 break; 6245 case WifiManager.CONNECT_NETWORK: 6246 /** 6247 * The connect message can contain a network id passed as arg1 on message or 6248 * or a config passed as obj on message. 6249 * For a new network, a config is passed to create and connect. 6250 * For an existing network, a network id is passed 6251 */ 6252 netId = message.arg1; 6253 config = (WifiConfiguration) message.obj; 6254 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6255 6256 /* Save the network config */ 6257 if (config != null) { 6258 result = mWifiConfigStore.saveNetwork(config, message.sendingUid); 6259 netId = result.getNetworkId(); 6260 } 6261 config = mWifiConfigStore.getWifiConfiguration(netId); 6262 6263 if (config == null) { 6264 loge("CONNECT_NETWORK id=" + Integer.toString(netId) + " " 6265 + mSupplicantStateTracker.getSupplicantStateName() + " my state " 6266 + getCurrentState().getName()); 6267 } else { 6268 String wasSkipped = config.autoJoinBailedDueToLowRssi ? " skipped" : ""; 6269 loge("CONNECT_NETWORK id=" + Integer.toString(netId) 6270 + " config=" + config.SSID 6271 + " cnid=" + config.networkId 6272 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 6273 + " my state " + getCurrentState().getName() 6274 + " uid = " + message.sendingUid 6275 + wasSkipped); 6276 } 6277 6278 autoRoamSetBSSID(netId, "any"); 6279 6280 if (message.sendingUid == Process.WIFI_UID 6281 || message.sendingUid == Process.SYSTEM_UID) { 6282 // As a sanity measure, clear the BSSID in the supplicant network block. 6283 // If system or Wifi Settings want to connect, they will not 6284 // specify the BSSID. 6285 // If an app however had added a BSSID to this configuration, and the BSSID 6286 // was wrong, Then we would forever fail to connect until that BSSID 6287 // is cleaned up. 6288 clearConfigBSSID(config, "CONNECT_NETWORK"); 6289 } 6290 6291 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 6292 6293 /* Tell autojoin the user did try to connect to that network */ 6294 mWifiAutoJoinController.updateConfigurationHistory(netId, true, true); 6295 6296 mWifiConfigStore.setLastSelectedConfiguration(netId); 6297 6298 didDisconnect = false; 6299 if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID 6300 && mLastNetworkId != netId) { 6301 /** Supplicant will ignore the reconnect if we are currently associated, 6302 * hence trigger a disconnect 6303 */ 6304 didDisconnect = true; 6305 mWifiNative.disconnect(); 6306 } 6307 6308 // Make sure the network is enabled, since supplicant will not reenable it 6309 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 6310 6311 if (mWifiConfigStore.selectNetwork(netId) && 6312 mWifiNative.reconnect()) { 6313 lastConnectAttempt = System.currentTimeMillis(); 6314 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 6315 6316 /* The state tracker handles enabling networks upon completion/failure */ 6317 mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); 6318 replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 6319 if (didDisconnect) { 6320 /* Expect a disconnection from the old connection */ 6321 transitionTo(mDisconnectingState); 6322 } else { 6323 /** 6324 * Directly go to disconnected state where we 6325 * process the connection events from supplicant 6326 **/ 6327 transitionTo(mDisconnectedState); 6328 } 6329 } else { 6330 loge("Failed to connect config: " + config + " netId: " + netId); 6331 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 6332 WifiManager.ERROR); 6333 break; 6334 } 6335 break; 6336 case WifiManager.SAVE_NETWORK: 6337 mWifiConnectionStatistics.numWifiManagerJoinAttempt++; 6338 // Fall thru 6339 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 6340 lastSavedConfigurationAttempt = null; // Used for debug 6341 config = (WifiConfiguration) message.obj; 6342 if (config == null) { 6343 loge("ERROR: SAVE_NETWORK with null configuration" 6344 + mSupplicantStateTracker.getSupplicantStateName() 6345 + " my state " + getCurrentState().getName()); 6346 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6347 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 6348 WifiManager.ERROR); 6349 break; 6350 } 6351 lastSavedConfigurationAttempt = new WifiConfiguration(config); 6352 int nid = config.networkId; 6353 loge("SAVE_NETWORK id=" + Integer.toString(nid) 6354 + " config=" + config.SSID 6355 + " nid=" + config.networkId 6356 + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() 6357 + " my state " + getCurrentState().getName()); 6358 6359 result = mWifiConfigStore.saveNetwork(config, -1); 6360 if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { 6361 if (mWifiInfo.getNetworkId() == result.getNetworkId()) { 6362 if (result.hasIpChanged()) { 6363 // The currently connection configuration was changed 6364 // We switched from DHCP to static or from static to DHCP, or the 6365 // static IP address has changed. 6366 log("Reconfiguring IP on connection"); 6367 // TODO: clear addresses and disable IPv6 6368 // to simplify obtainingIpState. 6369 transitionTo(mObtainingIpState); 6370 } 6371 if (result.hasProxyChanged()) { 6372 log("Reconfiguring proxy on connection"); 6373 updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); 6374 } 6375 } 6376 replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); 6377 if (VDBG) { 6378 loge("Success save network nid=" 6379 + Integer.toString(result.getNetworkId())); 6380 } 6381 6382 synchronized(mScanResultCache) { 6383 /** 6384 * If the command comes from WifiManager, then 6385 * tell autojoin the user did try to modify and save that network, 6386 * and interpret the SAVE_NETWORK as a request to connect 6387 */ 6388 boolean user = message.what == WifiManager.SAVE_NETWORK; 6389 mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() 6390 , user, true); 6391 mWifiAutoJoinController.attemptAutoJoin(); 6392 } 6393 } else { 6394 loge("Failed to save network"); 6395 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 6396 replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, 6397 WifiManager.ERROR); 6398 } 6399 break; 6400 case WifiManager.FORGET_NETWORK: 6401 // Debug only, remember last configuration that was forgotten 6402 WifiConfiguration toRemove 6403 = mWifiConfigStore.getWifiConfiguration(message.arg1); 6404 if (toRemove == null) { 6405 lastForgetConfigurationAttempt = null; 6406 } else { 6407 lastForgetConfigurationAttempt = new WifiConfiguration(toRemove); 6408 } 6409 if (mWifiConfigStore.forgetNetwork(message.arg1)) { 6410 replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); 6411 } else { 6412 loge("Failed to forget network"); 6413 replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, 6414 WifiManager.ERROR); 6415 } 6416 break; 6417 case WifiManager.START_WPS: 6418 WpsInfo wpsInfo = (WpsInfo) message.obj; 6419 WpsResult wpsResult; 6420 switch (wpsInfo.setup) { 6421 case WpsInfo.PBC: 6422 wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); 6423 break; 6424 case WpsInfo.KEYPAD: 6425 wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); 6426 break; 6427 case WpsInfo.DISPLAY: 6428 wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); 6429 break; 6430 default: 6431 wpsResult = new WpsResult(Status.FAILURE); 6432 loge("Invalid setup for WPS"); 6433 break; 6434 } 6435 mWifiConfigStore.setLastSelectedConfiguration 6436 (WifiConfiguration.INVALID_NETWORK_ID); 6437 if (wpsResult.status == Status.SUCCESS) { 6438 replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); 6439 transitionTo(mWpsRunningState); 6440 } else { 6441 loge("Failed to start WPS with config " + wpsInfo.toString()); 6442 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); 6443 } 6444 break; 6445 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6446 if (DBG) log("Network connection established"); 6447 mLastNetworkId = message.arg1; 6448 mLastBssid = (String) message.obj; 6449 6450 mWifiInfo.setBSSID(mLastBssid); 6451 mWifiInfo.setNetworkId(mLastNetworkId); 6452 // Send event to CM & network change broadcast 6453 setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); 6454 sendNetworkStateChangeBroadcast(mLastBssid); 6455 transitionTo(mObtainingIpState); 6456 break; 6457 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 6458 // Calling handleNetworkDisconnect here is redundant because we might already 6459 // have called it when leaving L2ConnectedState to go to disconnecting state 6460 // or thru other path 6461 // We should normally check the mWifiInfo or mLastNetworkId so as to check 6462 // if they are valid, and only in this case call handleNEtworkDisconnect, 6463 // TODO: this should be fixed for a L MR release 6464 // The side effect of calling handleNetworkDisconnect twice is that a bunch of 6465 // idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode 6466 // at the chip etc... 6467 if (DBG) log("ConnectModeState: Network connection lost "); 6468 handleNetworkDisconnect(); 6469 transitionTo(mDisconnectedState); 6470 break; 6471 default: 6472 return NOT_HANDLED; 6473 } 6474 return HANDLED; 6475 } 6476 } 6477 6478 private class WifiNetworkAgent extends NetworkAgent { 6479 public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, 6480 NetworkCapabilities nc, LinkProperties lp, int score) { 6481 super(l, c, TAG, ni, nc, lp, score); 6482 } 6483 protected void unwanted() { 6484 // Ignore if we're not the current networkAgent. 6485 if (this != mNetworkAgent) return; 6486 if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " 6487 + Integer.toString(mWifiInfo.score)); 6488 unwantedNetwork(network_status_unwanted_disconnect); 6489 } 6490 6491 protected void networkStatus(int status) { 6492 if (status == NetworkAgent.INVALID_NETWORK) { 6493 if (DBG) log("WifiNetworkAgent -> Wifi networkStatus invalid score " 6494 + Integer.toString(mWifiInfo.score)); 6495 unwantedNetwork(network_status_unwanted_disable_autojoin); 6496 } 6497 } 6498 } 6499 6500 void unwantedNetwork(int reason) { 6501 sendMessage(CMD_UNWANTED_NETWORK, reason); 6502 } 6503 6504 6505 boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { 6506 if (config == null) 6507 return false; 6508 HashSet<Integer> channels 6509 = mWifiConfigStore.makeChannelList(config, 6510 ONE_HOUR_MILLI, restrictChannelList); 6511 if (channels != null && channels.size() != 0) { 6512 StringBuilder freqs = new StringBuilder(); 6513 boolean first = true; 6514 for (Integer channel : channels) { 6515 if (!first) 6516 freqs.append(","); 6517 freqs.append(channel.toString()); 6518 first = false; 6519 } 6520 if (DBG) { 6521 loge("WifiStateMachine starting scan with " + freqs); 6522 } 6523 // Call wifi native to start the scan 6524 if (startScanNative( 6525 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, 6526 freqs.toString())) { 6527 // Only count battery consumption if scan request is accepted 6528 noteScanStart(SCAN_ALARM_SOURCE, null); 6529 // Return true 6530 } 6531 messageHandlingStatus = MESSAGE_HANDLING_STATUS_OK; 6532 return true; 6533 } else { 6534 if (DBG) loge("WifiStateMachine no channels for " + config.configKey()); 6535 return false; 6536 } 6537 } 6538 6539 void clearCurrentConfigBSSID(String dbg) { 6540 // Clear the bssid in the current config's network block 6541 WifiConfiguration config = getCurrentWifiConfiguration(); 6542 if (config == null) 6543 return; 6544 clearConfigBSSID(config, dbg); 6545 } 6546 void clearConfigBSSID(WifiConfiguration config, String dbg) { 6547 if (config == null) 6548 return; 6549 if (DBG) { 6550 loge(dbg + " " + mTargetRoamBSSID + " config " + config.configKey() 6551 + " config.bssid " + config.BSSID); 6552 } 6553 config.autoJoinBSSID = "any"; 6554 config.BSSID = "any"; 6555 if (DBG) { 6556 loge(dbg + " " + config.SSID 6557 + " nid=" + Integer.toString(config.networkId)); 6558 } 6559 mWifiConfigStore.saveWifiConfigBSSID(config); 6560 } 6561 6562 class L2ConnectedState extends State { 6563 @Override 6564 public void enter() { 6565 mRssiPollToken++; 6566 if (mEnableRssiPolling) { 6567 sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); 6568 } 6569 if (mNetworkAgent != null) { 6570 loge("Have NetworkAgent when entering L2Connected"); 6571 setNetworkDetailedState(DetailedState.DISCONNECTED); 6572 } 6573 setNetworkDetailedState(DetailedState.CONNECTING); 6574 6575 if (TextUtils.isEmpty(mTcpBufferSizes) == false) { 6576 mLinkProperties.setTcpBufferSizes(mTcpBufferSizes); 6577 } 6578 mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext, 6579 "WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter, 6580 mLinkProperties, 60); 6581 6582 // We must clear the config BSSID, as the wifi chipset may decide to roam 6583 // from this point on and having the BSSID specified in the network block would 6584 // cause the roam to faile and the device to disconnect 6585 clearCurrentConfigBSSID("L2ConnectedState"); 6586 } 6587 6588 @Override 6589 public void exit() { 6590 // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState 6591 // Bug: 15347363 6592 // For paranoia's sake, call handleNetworkDisconnect 6593 // only if BSSID is null or last networkId 6594 // is not invalid. 6595 if (DBG) { 6596 StringBuilder sb = new StringBuilder(); 6597 sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); 6598 if (mLastBssid !=null) { 6599 sb.append(" ").append(mLastBssid); 6600 } 6601 } 6602 if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { 6603 handleNetworkDisconnect(); 6604 } 6605 } 6606 6607 @Override 6608 public boolean processMessage(Message message) { 6609 logStateAndMessage(message, getClass().getSimpleName()); 6610 6611 switch (message.what) { 6612 case DhcpStateMachine.CMD_PRE_DHCP_ACTION: 6613 handlePreDhcpSetup(); 6614 break; 6615 case DhcpStateMachine.CMD_POST_DHCP_ACTION: 6616 handlePostDhcpSetup(); 6617 if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { 6618 if (DBG) log("WifiStateMachine DHCP successful"); 6619 handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); 6620 // We advance to mVerifyingLinkState because handleIPv4Success will call 6621 // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. 6622 } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { 6623 if (DBG) { 6624 int count = -1; 6625 WifiConfiguration config = getCurrentWifiConfiguration(); 6626 if (config != null) { 6627 count = config.numConnectionFailures; 6628 } 6629 log("WifiStateMachine DHCP failure count=" + count); 6630 } 6631 handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); 6632 // As above, we transition to mDisconnectingState via updateLinkProperties. 6633 } 6634 break; 6635 case CMD_IP_CONFIGURATION_SUCCESSFUL: 6636 handleSuccessfulIpConfiguration(); 6637 sendConnectedState(); 6638 transitionTo(mConnectedState); 6639 break; 6640 case CMD_IP_CONFIGURATION_LOST: 6641 handleIpConfigurationLost(); 6642 transitionTo(mDisconnectingState); 6643 break; 6644 case CMD_DISCONNECT: 6645 mWifiNative.disconnect(); 6646 transitionTo(mDisconnectingState); 6647 break; 6648 case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: 6649 if (message.arg1 == 1) { 6650 mWifiNative.disconnect(); 6651 mTemporarilyDisconnectWifi = true; 6652 transitionTo(mDisconnectingState); 6653 } 6654 break; 6655 case CMD_SET_OPERATIONAL_MODE: 6656 if (message.arg1 != CONNECT_MODE) { 6657 sendMessage(CMD_DISCONNECT); 6658 deferMessage(message); 6659 if (message.arg1 == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 6660 noteWifiDisabledWhileAssociated(); 6661 } 6662 } 6663 break; 6664 case CMD_SET_COUNTRY_CODE: 6665 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6666 deferMessage(message); 6667 break; 6668 case CMD_START_SCAN: 6669 if (DBG) { 6670 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 6671 + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) 6672 + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) 6673 + " targetRoamBSSID=" + mTargetRoamBSSID 6674 + " RSSI=" + mWifiInfo.getRssi()); 6675 } 6676 if (message.arg1 == SCAN_ALARM_SOURCE) { 6677 boolean tryFullBandScan = false; 6678 boolean restrictChannelList = false; 6679 long now_ms = System.currentTimeMillis(); 6680 if (DBG) { 6681 loge("WifiStateMachine CMD_START_SCAN with age=" 6682 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 6683 + " interval=" + fullBandConnectedTimeIntervalMilli 6684 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 6685 } 6686 if (mWifiInfo != null) { 6687 if (mWifiConfigStore.enableFullBandScanWhenAssociated && 6688 (now_ms - lastFullBandConnectedTimeMilli) 6689 > fullBandConnectedTimeIntervalMilli) { 6690 if (DBG) { 6691 loge("WifiStateMachine CMD_START_SCAN try full band scan age=" 6692 + Long.toString(now_ms - lastFullBandConnectedTimeMilli) 6693 + " interval=" + fullBandConnectedTimeIntervalMilli 6694 + " maxinterval=" + maxFullBandConnectedTimeIntervalMilli); 6695 } 6696 tryFullBandScan = true; 6697 } 6698 6699 if (mWifiInfo.txSuccessRate > 6700 mWifiConfigStore.maxTxPacketForPartialScans 6701 || mWifiInfo.rxSuccessRate > 6702 mWifiConfigStore.maxRxPacketForPartialScans) { 6703 // Too much traffic at the interface, hence no full band scan 6704 if (DBG) { 6705 loge("WifiStateMachine CMD_START_SCAN " + 6706 "prevent full band scan due to pkt rate"); 6707 } 6708 tryFullBandScan = false; 6709 } 6710 6711 if (mWifiInfo.txSuccessRate > 6712 mWifiConfigStore.maxTxPacketForPartialScans 6713 || mWifiInfo.rxSuccessRate > 6714 mWifiConfigStore.maxRxPacketForPartialScans) { 6715 // Don't scan if lots of packets are being sent 6716 restrictChannelList = true; 6717 if (mWifiConfigStore.alwaysEnableScansWhileAssociated == 0) { 6718 if (DBG) { 6719 loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 6720 + " ...and ignore scans" 6721 + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) 6722 + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); 6723 } 6724 messageHandlingStatus = MESSAGE_HANDLING_STATUS_REFUSED; 6725 return HANDLED; 6726 } 6727 } 6728 } 6729 6730 WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); 6731 if (DBG) { 6732 loge("WifiStateMachine CMD_START_SCAN full=" + 6733 tryFullBandScan); 6734 } 6735 if (currentConfiguration != null) { 6736 if (fullBandConnectedTimeIntervalMilli 6737 < mWifiConfigStore.associatedPartialScanPeriodMilli) { 6738 // Sanity 6739 fullBandConnectedTimeIntervalMilli 6740 = mWifiConfigStore.associatedPartialScanPeriodMilli; 6741 } 6742 if (tryFullBandScan) { 6743 lastFullBandConnectedTimeMilli = now_ms; 6744 if (fullBandConnectedTimeIntervalMilli 6745 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 6746 // Increase the interval 6747 fullBandConnectedTimeIntervalMilli 6748 = fullBandConnectedTimeIntervalMilli 6749 * mWifiConfigStore.associatedFullScanBackoff / 8; 6750 6751 if (DBG) { 6752 loge("WifiStateMachine CMD_START_SCAN bump interval =" 6753 + fullBandConnectedTimeIntervalMilli); 6754 } 6755 } 6756 handleScanRequest( 6757 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6758 } else { 6759 if (!startScanForConfiguration( 6760 currentConfiguration, restrictChannelList)) { 6761 if (DBG) { 6762 loge("WifiStateMachine starting scan, " + 6763 " did not find channels -> full"); 6764 } 6765 lastFullBandConnectedTimeMilli = now_ms; 6766 if (fullBandConnectedTimeIntervalMilli 6767 < mWifiConfigStore.associatedFullScanMaxIntervalMilli) { 6768 // Increase the interval 6769 fullBandConnectedTimeIntervalMilli 6770 = fullBandConnectedTimeIntervalMilli 6771 * mWifiConfigStore.associatedFullScanBackoff / 8; 6772 6773 if (DBG) { 6774 loge("WifiStateMachine CMD_START_SCAN bump interval =" 6775 + fullBandConnectedTimeIntervalMilli); 6776 } 6777 } 6778 handleScanRequest( 6779 WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6780 } 6781 } 6782 } else { 6783 loge("CMD_START_SCAN : connected mode and no configuration"); 6784 messageHandlingStatus = MESSAGE_HANDLING_STATUS_HANDLING_ERROR; 6785 } 6786 } else { 6787 // Not scan alarm source 6788 handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); 6789 } 6790 break; 6791 /* Ignore connection to same network */ 6792 case WifiManager.CONNECT_NETWORK: 6793 int netId = message.arg1; 6794 if (mWifiInfo.getNetworkId() == netId) { 6795 break; 6796 } 6797 return NOT_HANDLED; 6798 /* Ignore */ 6799 case WifiMonitor.NETWORK_CONNECTION_EVENT: 6800 break; 6801 case CMD_RSSI_POLL: 6802 if (message.arg1 == mRssiPollToken) { 6803 if (mWifiConfigStore.enableChipWakeUpWhenAssociated) { 6804 if (VVDBG) log(" get link layer stats " + mWifiLinkLayerStatsSupported); 6805 WifiLinkLayerStats stats = getWifiLinkLayerStats(VDBG); 6806 if (stats != null) { 6807 // Sanity check the results provided by driver 6808 if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI 6809 && (stats.rssi_mgmt == 0 6810 || stats.beacon_rx == 0)) { 6811 stats = null; 6812 } 6813 } 6814 // Get Info and continue polling 6815 fetchRssiLinkSpeedAndFrequencyNative(); 6816 calculateWifiScore(stats); 6817 } 6818 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 6819 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 6820 6821 if (DBG) sendRssiChangeBroadcast(mWifiInfo.getRssi()); 6822 } else { 6823 // Polling has completed 6824 } 6825 break; 6826 case CMD_ENABLE_RSSI_POLL: 6827 if (mWifiConfigStore.enableRssiPollWhenAssociated) { 6828 mEnableRssiPolling = (message.arg1 == 1); 6829 } else { 6830 mEnableRssiPolling = false; 6831 } 6832 mRssiPollToken++; 6833 if (mEnableRssiPolling) { 6834 // First poll 6835 fetchRssiLinkSpeedAndFrequencyNative(); 6836 sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, 6837 mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); 6838 } else { 6839 cleanWifiScore(); 6840 } 6841 break; 6842 case WifiManager.RSSI_PKTCNT_FETCH: 6843 RssiPacketCountInfo info = new RssiPacketCountInfo(); 6844 fetchRssiLinkSpeedAndFrequencyNative(); 6845 info.rssi = mWifiInfo.getRssi(); 6846 fetchPktcntNative(info); 6847 replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); 6848 break; 6849 case CMD_DELAYED_NETWORK_DISCONNECT: 6850 if (!linkDebouncing && mWifiConfigStore.enableLinkDebouncing) { 6851 6852 // Ignore if we are not debouncing 6853 loge("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " 6854 + message.arg1); 6855 return HANDLED; 6856 } else { 6857 loge("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " 6858 + message.arg1); 6859 6860 linkDebouncing = false; 6861 // If we are still debouncing while this message comes, 6862 // it means we were not able to reconnect within the alloted time 6863 // = LINK_FLAPPING_DEBOUNCE_MSEC 6864 // and thus, trigger a real disconnect 6865 handleNetworkDisconnect(); 6866 transitionTo(mDisconnectedState); 6867 } 6868 break; 6869 case CMD_ASSOCIATED_BSSID: 6870 if ((String) message.obj == null) { 6871 loge("Associated command w/o BSSID"); 6872 break; 6873 } 6874 mLastBssid = (String) message.obj; 6875 mWifiInfo.setBSSID((String) message.obj); 6876 break; 6877 default: 6878 return NOT_HANDLED; 6879 } 6880 6881 return HANDLED; 6882 } 6883 } 6884 6885 class ObtainingIpState extends State { 6886 @Override 6887 public void enter() { 6888 if (DBG) { 6889 String key = ""; 6890 if (getCurrentWifiConfiguration() != null) { 6891 key = getCurrentWifiConfiguration().configKey(); 6892 } 6893 log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) 6894 + " " + key + " " 6895 + " roam=" + mAutoRoaming 6896 + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) 6897 + " watchdog= " + obtainingIpWatchdogCount); 6898 } 6899 6900 // Reset link Debouncing, indicating we have successfully re-connected to the AP 6901 // We might still be roaming 6902 linkDebouncing = false; 6903 6904 // We must clear the config BSSID, as the wifi chipset may decide to roam 6905 // from this point on and having the BSSID specified in the network block would 6906 // cause the roam to faile and the device to disconnect 6907 clearCurrentConfigBSSID("ObtainingIpAddress"); 6908 6909 try { 6910 mNwService.enableIpv6(mInterfaceName); 6911 } catch (RemoteException re) { 6912 loge("Failed to enable IPv6: " + re); 6913 } catch (IllegalStateException e) { 6914 loge("Failed to enable IPv6: " + e); 6915 } 6916 6917 if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { 6918 if (isRoaming()) { 6919 renewDhcp(); 6920 } else { 6921 // Remove any IP address on the interface in case we're switching from static 6922 // IP configuration to DHCP. This is safe because if we get here when not 6923 // roaming, we don't have a usable address. 6924 clearIPv4Address(mInterfaceName); 6925 startDhcp(); 6926 } 6927 obtainingIpWatchdogCount++; 6928 loge("Start Dhcp Watchdog " + obtainingIpWatchdogCount); 6929 sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, 6930 obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); 6931 } else { 6932 // stop any running dhcp before assigning static IP 6933 stopDhcp(); 6934 StaticIpConfiguration config = mWifiConfigStore.getStaticIpConfiguration( 6935 mLastNetworkId); 6936 if (config.ipAddress == null) { 6937 loge("Static IP lacks address"); 6938 sendMessage(CMD_STATIC_IP_FAILURE); 6939 } else { 6940 InterfaceConfiguration ifcg = new InterfaceConfiguration(); 6941 ifcg.setLinkAddress(config.ipAddress); 6942 ifcg.setInterfaceUp(); 6943 try { 6944 mNwService.setInterfaceConfig(mInterfaceName, ifcg); 6945 if (DBG) log("Static IP configuration succeeded"); 6946 DhcpResults dhcpResults = new DhcpResults(config); 6947 sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); 6948 } catch (RemoteException re) { 6949 loge("Static IP configuration failed: " + re); 6950 sendMessage(CMD_STATIC_IP_FAILURE); 6951 } catch (IllegalStateException e) { 6952 loge("Static IP configuration failed: " + e); 6953 sendMessage(CMD_STATIC_IP_FAILURE); 6954 } 6955 } 6956 } 6957 } 6958 @Override 6959 public boolean processMessage(Message message) { 6960 logStateAndMessage(message, getClass().getSimpleName()); 6961 6962 switch(message.what) { 6963 case CMD_STATIC_IP_SUCCESS: 6964 handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); 6965 break; 6966 case CMD_STATIC_IP_FAILURE: 6967 handleIPv4Failure(CMD_STATIC_IP_FAILURE); 6968 break; 6969 case CMD_AUTO_CONNECT: 6970 case CMD_AUTO_ROAM: 6971 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 6972 break; 6973 case WifiManager.SAVE_NETWORK: 6974 case WifiStateMachine.CMD_AUTO_SAVE_NETWORK: 6975 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6976 deferMessage(message); 6977 break; 6978 /* Defer any power mode changes since we must keep active power mode at DHCP */ 6979 case CMD_SET_HIGH_PERF_MODE: 6980 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6981 deferMessage(message); 6982 break; 6983 /* Defer scan request since we should not switch to other channels at DHCP */ 6984 case CMD_START_SCAN: 6985 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED; 6986 deferMessage(message); 6987 break; 6988 case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: 6989 if (message.arg1 == obtainingIpWatchdogCount) { 6990 loge("ObtainingIpAddress: Watchdog Triggered, count=" 6991 + obtainingIpWatchdogCount); 6992 handleIpConfigurationLost(); 6993 transitionTo(mDisconnectingState); 6994 break; 6995 } 6996 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 6997 break; 6998 default: 6999 return NOT_HANDLED; 7000 } 7001 return HANDLED; 7002 } 7003 } 7004 7005 class VerifyingLinkState extends State { 7006 @Override 7007 public void enter() { 7008 log(getName() + " enter"); 7009 setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); 7010 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); 7011 sendNetworkStateChangeBroadcast(mLastBssid); 7012 // End roaming 7013 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7014 } 7015 @Override 7016 public boolean processMessage(Message message) { 7017 logStateAndMessage(message, getClass().getSimpleName()); 7018 7019 switch (message.what) { 7020 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7021 // Stay here 7022 log(getName() + " POOR_LINK_DETECTED: no transition"); 7023 break; 7024 case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: 7025 log(getName() + " GOOD_LINK_DETECTED: transition to captive portal check"); 7026 7027 log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); 7028 sendConnectedState(); 7029 transitionTo(mConnectedState); 7030 break; 7031 default: 7032 if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); 7033 return NOT_HANDLED; 7034 } 7035 return HANDLED; 7036 } 7037 } 7038 7039 private void sendConnectedState() { 7040 // Send out a broadcast with the CAPTIVE_PORTAL_CHECK to preserve 7041 // existing behaviour. The captive portal check really happens after we 7042 // transition into DetailedState.CONNECTED. 7043 setNetworkDetailedState(DetailedState.CAPTIVE_PORTAL_CHECK); 7044 mWifiConfigStore.updateStatus(mLastNetworkId, 7045 DetailedState.CAPTIVE_PORTAL_CHECK); 7046 sendNetworkStateChangeBroadcast(mLastBssid); 7047 7048 if (mWifiConfigStore.getLastSelectedConfiguration() != null) { 7049 if (mNetworkAgent != null) mNetworkAgent.explicitlySelected(); 7050 } 7051 7052 setNetworkDetailedState(DetailedState.CONNECTED); 7053 mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); 7054 sendNetworkStateChangeBroadcast(mLastBssid); 7055 } 7056 7057 class RoamingState extends State { 7058 boolean mAssociated; 7059 @Override 7060 public void enter() { 7061 if (DBG) { 7062 log("RoamingState Enter" 7063 + " mScreenOn=" + mScreenOn ); 7064 } 7065 setScanAlarm(false, 0); 7066 7067 // Make sure we disconnect if roaming fails 7068 roamWatchdogCount++; 7069 loge("Start Roam Watchdog " + roamWatchdogCount); 7070 sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, 7071 roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); 7072 mAssociated = false; 7073 } 7074 @Override 7075 public boolean processMessage(Message message) { 7076 logStateAndMessage(message, getClass().getSimpleName()); 7077 7078 switch (message.what) { 7079 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7080 if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); 7081 return HANDLED; 7082 case CMD_UNWANTED_NETWORK: 7083 if (DBG) log("Roaming and CS doesnt want the network -> ignore"); 7084 return HANDLED; 7085 case CMD_SET_OPERATIONAL_MODE: 7086 if (message.arg1 != CONNECT_MODE) { 7087 deferMessage(message); 7088 } 7089 break; 7090 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7091 /** 7092 * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT 7093 * before NETWORK_DISCONNECTION_EVENT 7094 * And there is an associated BSSID corresponding to our target BSSID, then 7095 * we have missed the network disconnection, transition to mDisconnectedState 7096 * and handle the rest of the events there. 7097 */ 7098 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 7099 if (stateChangeResult.state == SupplicantState.DISCONNECTED 7100 || stateChangeResult.state == SupplicantState.INACTIVE 7101 || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { 7102 if (DBG) { 7103 log("STATE_CHANGE_EVENT in roaming state " 7104 + stateChangeResult.toString() ); 7105 } 7106 if (stateChangeResult.BSSID != null 7107 && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { 7108 handleNetworkDisconnect(); 7109 transitionTo(mDisconnectedState); 7110 } 7111 } 7112 if (stateChangeResult.state == SupplicantState.ASSOCIATED) { 7113 // We completed the layer2 roaming part 7114 mAssociated = true; 7115 if (stateChangeResult.BSSID != null) { 7116 mTargetRoamBSSID = (String) stateChangeResult.BSSID; 7117 } 7118 } 7119 break; 7120 case CMD_ROAM_WATCHDOG_TIMER: 7121 if (roamWatchdogCount == message.arg1) { 7122 if (DBG) log("roaming watchdog! -> disconnect"); 7123 mRoamFailCount++; 7124 handleNetworkDisconnect(); 7125 mWifiNative.disconnect(); 7126 transitionTo(mDisconnectedState); 7127 } 7128 break; 7129 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7130 if (mAssociated) { 7131 if (DBG) log("roaming and Network connection established"); 7132 mLastNetworkId = message.arg1; 7133 mLastBssid = (String) message.obj; 7134 mWifiInfo.setBSSID(mLastBssid); 7135 mWifiInfo.setNetworkId(mLastNetworkId); 7136 mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); 7137 transitionTo(mObtainingIpState); 7138 } else { 7139 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7140 } 7141 break; 7142 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7143 // Throw away but only if it corresponds to the network we're roaming to 7144 String bssid = (String)message.obj; 7145 if (true) { 7146 String target = ""; 7147 if (mTargetRoamBSSID != null) target = mTargetRoamBSSID; 7148 log("NETWORK_DISCONNECTION_EVENT in roaming state" 7149 + " BSSID=" + bssid 7150 + " target=" + target); 7151 } 7152 if (bssid != null && bssid.equals(mTargetRoamBSSID)) { 7153 handleNetworkDisconnect(); 7154 transitionTo(mDisconnectedState); 7155 } 7156 break; 7157 case WifiMonitor.SSID_TEMP_DISABLED: 7158 // Auth error while roaming 7159 loge("SSID_TEMP_DISABLED nid=" + Integer.toString(mLastNetworkId) 7160 + " id=" + Integer.toString(message.arg1) 7161 + " isRoaming=" + isRoaming() 7162 + " roam=" + Integer.toString(mAutoRoaming)); 7163 if (message.arg1 == mLastNetworkId) { 7164 handleNetworkDisconnect(); 7165 transitionTo(mDisconnectingState); 7166 } 7167 return NOT_HANDLED; 7168 case CMD_START_SCAN: 7169 deferMessage(message); 7170 break; 7171 default: 7172 return NOT_HANDLED; 7173 } 7174 return HANDLED; 7175 } 7176 7177 @Override 7178 public void exit() { 7179 loge("WifiStateMachine: Leaving Roaming state"); 7180 } 7181 } 7182 7183 class ConnectedState extends State { 7184 @Override 7185 public void enter() { 7186 String address; 7187 updateDefaultRouteMacAddress(1000); 7188 if (DBG) { 7189 log("ConnectedState Enter " 7190 + " mScreenOn=" + mScreenOn 7191 + " scanperiod=" 7192 + Integer.toString(mWifiConfigStore.associatedPartialScanPeriodMilli) ); 7193 } 7194 if (mScreenOn 7195 && mWifiConfigStore.enableAutoJoinScanWhenAssociated) { 7196 mCurrentScanAlarmMs = mWifiConfigStore.associatedPartialScanPeriodMilli; 7197 // Scan after 200ms 7198 setScanAlarm(true, 200); 7199 } else { 7200 mCurrentScanAlarmMs = 0; 7201 } 7202 registerConnected(); 7203 lastConnectAttempt = 0; 7204 targetWificonfiguration = null; 7205 // Paranoia 7206 linkDebouncing = false; 7207 7208 // Not roaming anymore 7209 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7210 7211 if (testNetworkDisconnect) { 7212 testNetworkDisconnectCounter++; 7213 loge("ConnectedState Enter start disconnect test " + 7214 testNetworkDisconnectCounter); 7215 sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, 7216 testNetworkDisconnectCounter, 0), 15000); 7217 } 7218 7219 // Reenable all networks, allow for hidden networks to be scanned 7220 mWifiConfigStore.enableAllNetworks(); 7221 } 7222 @Override 7223 public boolean processMessage(Message message) { 7224 WifiConfiguration config = null; 7225 logStateAndMessage(message, getClass().getSimpleName()); 7226 7227 switch (message.what) { 7228 case WifiWatchdogStateMachine.POOR_LINK_DETECTED: 7229 if (DBG) log("Watchdog reports poor link"); 7230 transitionTo(mVerifyingLinkState); 7231 break; 7232 case CMD_UNWANTED_NETWORK: 7233 if (message.arg1 == network_status_unwanted_disconnect) { 7234 mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); 7235 mWifiNative.disconnect(); 7236 transitionTo(mDisconnectingState); 7237 } else if (message.arg1 == network_status_unwanted_disconnect) { 7238 config = getCurrentWifiConfiguration(); 7239 if (config != null) { 7240 // Disable autojoin 7241 config.noInternetAccess = true; 7242 } 7243 } 7244 return HANDLED; 7245 case CMD_TEST_NETWORK_DISCONNECT: 7246 // Force a disconnect 7247 if (message.arg1 == testNetworkDisconnectCounter) { 7248 mWifiNative.disconnect(); 7249 } 7250 break; 7251 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7252 config = getCurrentWifiConfiguration(); 7253 if (mScreenOn 7254 && !linkDebouncing 7255 && config != null 7256 && config.autoJoinStatus == WifiConfiguration.AUTO_JOIN_ENABLED 7257 && !mWifiConfigStore.isLastSelectedConfiguration(config) 7258 && message.arg2 != 3 /* reason cannot be 3, i.e. locally generated */ 7259 && ((ScanResult.is24GHz(mWifiInfo.getFrequency()) 7260 && mWifiInfo.getRssi() > 7261 WifiConfiguration.BAD_RSSI_24) 7262 || (ScanResult.is5GHz(mWifiInfo.getFrequency()) 7263 && mWifiInfo.getRssi() > 7264 WifiConfiguration.BAD_RSSI_5))) { 7265 // Start de-bouncing the L2 disconnection: 7266 // this L2 disconnection might be spurious. 7267 // Hence we allow 7 seconds for the state machine to try 7268 // to reconnect, go thru the 7269 // roaming cycle and enter Obtaining IP address 7270 // before signalling the disconnect to ConnectivityService and L3 7271 startScanForConfiguration(getCurrentWifiConfiguration(), false); 7272 linkDebouncing = true; 7273 7274 sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, 7275 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); 7276 if (DBG) { 7277 log("NETWORK_DISCONNECTION_EVENT in connected state" 7278 + " BSSID=" + mWifiInfo.getBSSID() 7279 + " RSSI=" + mWifiInfo.getRssi() 7280 + " freq=" + mWifiInfo.getFrequency() 7281 + " reason=" + message.arg2 7282 + " -> debounce"); 7283 } 7284 return HANDLED; 7285 } else { 7286 if (DBG) { 7287 int ajst = -1; 7288 if (config != null) ajst = config.autoJoinStatus; 7289 log("NETWORK_DISCONNECTION_EVENT in connected state" 7290 + " BSSID=" + mWifiInfo.getBSSID() 7291 + " RSSI=" + mWifiInfo.getRssi() 7292 + " freq=" + mWifiInfo.getFrequency() 7293 + " was debouncing=" + linkDebouncing 7294 + " reason=" + message.arg2 7295 + " ajst=" + ajst); 7296 } 7297 } 7298 break; 7299 case CMD_AUTO_ROAM: 7300 /* Connect command coming from auto-join */ 7301 ScanResult candidate = (ScanResult)message.obj; 7302 String bssid = "any"; 7303 if (candidate != null && candidate.is5GHz()) { 7304 // Only lock BSSID for 5GHz networks 7305 bssid = candidate.BSSID; 7306 } 7307 int netId = mLastNetworkId; 7308 config = getCurrentWifiConfiguration(); 7309 7310 7311 if (config == null) { 7312 loge("AUTO_ROAM and no config, bail out..."); 7313 break; 7314 } 7315 7316 loge("CMD_AUTO_ROAM sup state " 7317 + mSupplicantStateTracker.getSupplicantStateName() 7318 + " my state " + getCurrentState().getName() 7319 + " nid=" + Integer.toString(netId) 7320 + " config " + config.configKey() 7321 + " roam=" + Integer.toString(message.arg2) 7322 + " to " + bssid 7323 + " targetRoamBSSID " + mTargetRoamBSSID); 7324 7325 /* Save the BSSID so as to lock it @ firmware */ 7326 if (!autoRoamSetBSSID(config, bssid) && !linkDebouncing) { 7327 loge("AUTO_ROAM nothing to do"); 7328 // Same BSSID, nothing to do 7329 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7330 break; 7331 }; 7332 7333 // Make sure the network is enabled, since supplicant will not reenable it 7334 mWifiConfigStore.enableNetworkWithoutBroadcast(netId, false); 7335 7336 boolean ret = false; 7337 if (netId != mLastNetworkId) { 7338 if (mWifiConfigStore.selectNetwork(netId) && 7339 mWifiNative.reconnect()) { 7340 ret = true; 7341 } 7342 } else { 7343 ret = mWifiNative.reassociate(); 7344 } 7345 if (ret) { 7346 lastConnectAttempt = System.currentTimeMillis(); 7347 targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); 7348 7349 // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); 7350 mAutoRoaming = message.arg2; 7351 transitionTo(mRoamingState); 7352 7353 } else { 7354 loge("Failed to connect config: " + config + " netId: " + netId); 7355 replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, 7356 WifiManager.ERROR); 7357 messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; 7358 break; 7359 } 7360 break; 7361 default: 7362 return NOT_HANDLED; 7363 } 7364 return HANDLED; 7365 } 7366 7367 @Override 7368 public void exit() { 7369 loge("WifiStateMachine: Leaving Connected state"); 7370 setScanAlarm(false, 0); 7371 } 7372 } 7373 7374 class DisconnectingState extends State { 7375 7376 @Override 7377 public void enter() { 7378 mCurrentScanAlarmMs = mDisconnectedScanPeriodMs; 7379 7380 if (PDBG) { 7381 loge(" Enter DisconnectingState State scan interval " + mFrameworkScanIntervalMs 7382 + " mEnableBackgroundScan= " + mEnableBackgroundScan 7383 + " screenOn=" + mScreenOn); 7384 } 7385 7386 // Make sure we disconnect: we enter this state prior connecting to a new 7387 // network, waiting for either a DISCONECT event or a SUPPLICANT_STATE_CHANGE 7388 // event which in this case will be indicating that supplicant started to associate. 7389 // In some cases supplicant doesn't ignore the connect requests (it might not 7390 // find the target SSID in its cache), 7391 // Therefore we end up stuck that state, hence the need for the watchdog. 7392 disconnectingWatchdogCount++; 7393 loge("Start Disconnecting Watchdog " + disconnectingWatchdogCount); 7394 sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER, 7395 disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC); 7396 } 7397 7398 @Override 7399 public boolean processMessage(Message message) { 7400 logStateAndMessage(message, getClass().getSimpleName()); 7401 switch (message.what) { 7402 case CMD_SET_OPERATIONAL_MODE: 7403 if (message.arg1 != CONNECT_MODE) { 7404 deferMessage(message); 7405 } 7406 break; 7407 case CMD_START_SCAN: 7408 // Ignore scans while disconnecting 7409 return HANDLED; 7410 case CMD_DISCONNECTING_WATCHDOG_TIMER: 7411 if (disconnectingWatchdogCount == message.arg1) { 7412 if (DBG) log("disconnecting watchdog! -> disconnect"); 7413 handleNetworkDisconnect(); 7414 transitionTo(mDisconnectedState); 7415 } 7416 break; 7417 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7418 /** 7419 * If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT 7420 * we have missed the network disconnection, transition to mDisconnectedState 7421 * and handle the rest of the events there 7422 */ 7423 deferMessage(message); 7424 handleNetworkDisconnect(); 7425 transitionTo(mDisconnectedState); 7426 break; 7427 default: 7428 return NOT_HANDLED; 7429 } 7430 return HANDLED; 7431 } 7432 7433 @Override 7434 public void exit() { 7435 mCurrentScanAlarmMs = 0; 7436 } 7437 } 7438 7439 class DisconnectedState extends State { 7440 @Override 7441 public void enter() { 7442 // We dont scan frequently if this is a temporary disconnect 7443 // due to p2p 7444 if (mTemporarilyDisconnectWifi) { 7445 mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); 7446 return; 7447 } 7448 7449 // Loose the last selection choice 7450 // mWifiAutoJoinController.setLastSelectedConfiguration 7451 // (WifiConfiguration.INVALID_NETWORK_ID); 7452 7453 mFrameworkScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 7454 Settings.Global.WIFI_FRAMEWORK_SCAN_INTERVAL_MS, 7455 mDefaultFrameworkScanIntervalMs); 7456 7457 if (mScreenOn) 7458 mCurrentScanAlarmMs = mDisconnectedScanPeriodMs; 7459 7460 if (PDBG) { 7461 loge(" Enter disconnected State scan interval " + mFrameworkScanIntervalMs 7462 + " mEnableBackgroundScan= " + mEnableBackgroundScan 7463 + " screenOn=" + mScreenOn); 7464 } 7465 7466 /** clear the roaming state, if we were roaming, we failed */ 7467 mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; 7468 7469 /** 7470 * - screen dark and PNO supported => scan alarm disabled 7471 * - everything else => scan alarm enabled with mDefaultFrameworkScanIntervalMs period 7472 */ 7473 if ((mScreenOn == false) && mEnableBackgroundScan) { //mEnableBackgroundScan) { 7474 /* If a regular scan result is pending, do not initiate background 7475 * scan until the scan results are returned. This is needed because 7476 * initiating a background scan will cancel the regular scan and 7477 * scan results will not be returned until background scanning is 7478 * cleared 7479 */ 7480 if (!mIsScanOngoing) { 7481 mWifiNative.enableBackgroundScan(true); 7482 } 7483 } else { 7484 setScanAlarm(true, 200); 7485 } 7486 7487 /** 7488 * If we have no networks saved, the supplicant stops doing the periodic scan. 7489 * The scans are useful to notify the user of the presence of an open network. 7490 * Note that these are not wake up scans. 7491 */ 7492 if (!mP2pConnected.get() && mWifiConfigStore.getConfiguredNetworks().size() == 0) { 7493 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 7494 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 7495 } 7496 7497 mDisconnectedTimeStamp = System.currentTimeMillis(); 7498 7499 } 7500 @Override 7501 public boolean processMessage(Message message) { 7502 boolean ret = HANDLED; 7503 7504 logStateAndMessage(message, getClass().getSimpleName()); 7505 7506 switch (message.what) { 7507 case CMD_NO_NETWORKS_PERIODIC_SCAN: 7508 if (mP2pConnected.get()) break; 7509 if (message.arg1 == mPeriodicScanToken && 7510 mWifiConfigStore.getConfiguredNetworks().size() == 0) { 7511 startScan(UNKNOWN_SCAN_SOURCE, -1, null, null); 7512 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 7513 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 7514 } 7515 break; 7516 case WifiManager.FORGET_NETWORK: 7517 case CMD_REMOVE_NETWORK: 7518 // Set up a delayed message here. After the forget/remove is handled 7519 // the handled delayed message will determine if there is a need to 7520 // scan and continue 7521 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 7522 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 7523 ret = NOT_HANDLED; 7524 break; 7525 case CMD_SET_OPERATIONAL_MODE: 7526 if (message.arg1 != CONNECT_MODE) { 7527 mOperationalMode = message.arg1; 7528 7529 mWifiConfigStore.disableAllNetworks(); 7530 if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { 7531 mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); 7532 setWifiState(WIFI_STATE_DISABLED); 7533 } 7534 7535 transitionTo(mScanModeState); 7536 } 7537 break; 7538 /* Ignore network disconnect */ 7539 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7540 break; 7541 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7542 StateChangeResult stateChangeResult = (StateChangeResult) message.obj; 7543 if (DBG) { 7544 loge("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state + 7545 " -> state= " + WifiInfo.getDetailedStateOf(stateChangeResult.state) 7546 + " debouncing=" + linkDebouncing); 7547 } 7548 setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); 7549 /* ConnectModeState does the rest of the handling */ 7550 ret = NOT_HANDLED; 7551 break; 7552 case CMD_START_SCAN: 7553 if (!isScanAllowed()) { 7554 // Ignore the scan request 7555 return HANDLED; 7556 } 7557 /* Disable background scan temporarily during a regular scan */ 7558 if (mEnableBackgroundScan) { 7559 mWifiNative.enableBackgroundScan(false); 7560 } 7561 /* Handled in parent state */ 7562 ret = NOT_HANDLED; 7563 break; 7564 case WifiMonitor.SCAN_RESULTS_EVENT: 7565 /* Re-enable background scan when a pending scan result is received */ 7566 if (mEnableBackgroundScan && mIsScanOngoing) { 7567 mWifiNative.enableBackgroundScan(true); 7568 } 7569 /* Handled in parent state */ 7570 ret = NOT_HANDLED; 7571 break; 7572 case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: 7573 NetworkInfo info = (NetworkInfo) message.obj; 7574 mP2pConnected.set(info.isConnected()); 7575 if (mP2pConnected.get()) { 7576 int defaultInterval = mContext.getResources().getInteger( 7577 R.integer.config_wifi_scan_interval_p2p_connected); 7578 long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), 7579 Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, 7580 defaultInterval); 7581 mWifiNative.setScanInterval((int) scanIntervalMs/1000); 7582 } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { 7583 if (DBG) log("Turn on scanning after p2p disconnected"); 7584 sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, 7585 ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); 7586 } 7587 case CMD_RECONNECT: 7588 case CMD_REASSOCIATE: 7589 if (mTemporarilyDisconnectWifi) { 7590 // Drop a third party reconnect/reassociate if STA is 7591 // temporarily disconnected for p2p 7592 break; 7593 } else { 7594 // ConnectModeState handles it 7595 ret = NOT_HANDLED; 7596 } 7597 break; 7598 case CMD_SCREEN_STATE_CHANGED: 7599 handleScreenStateChanged(message.arg1 != 0, 7600 /* startBackgroundScanIfNeeded = */ true); 7601 break; 7602 default: 7603 ret = NOT_HANDLED; 7604 } 7605 return ret; 7606 } 7607 7608 @Override 7609 public void exit() { 7610 /* No need for a background scan upon exit from a disconnected state */ 7611 if (mEnableBackgroundScan) { 7612 mWifiNative.enableBackgroundScan(false); 7613 } 7614 mCurrentScanAlarmMs = 0; 7615 setScanAlarm(false, 0); 7616 } 7617 } 7618 7619 class WpsRunningState extends State { 7620 // Tracks the source to provide a reply 7621 private Message mSourceMessage; 7622 @Override 7623 public void enter() { 7624 mSourceMessage = Message.obtain(getCurrentMessage()); 7625 } 7626 @Override 7627 public boolean processMessage(Message message) { 7628 logStateAndMessage(message, getClass().getSimpleName()); 7629 7630 switch (message.what) { 7631 case WifiMonitor.WPS_SUCCESS_EVENT: 7632 // Ignore intermediate success, wait for full connection 7633 break; 7634 case WifiMonitor.NETWORK_CONNECTION_EVENT: 7635 replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); 7636 mSourceMessage.recycle(); 7637 mSourceMessage = null; 7638 deferMessage(message); 7639 transitionTo(mDisconnectedState); 7640 break; 7641 case WifiMonitor.WPS_OVERLAP_EVENT: 7642 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 7643 WifiManager.WPS_OVERLAP_ERROR); 7644 mSourceMessage.recycle(); 7645 mSourceMessage = null; 7646 transitionTo(mDisconnectedState); 7647 break; 7648 case WifiMonitor.WPS_FAIL_EVENT: 7649 // Arg1 has the reason for the failure 7650 if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { 7651 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); 7652 mSourceMessage.recycle(); 7653 mSourceMessage = null; 7654 transitionTo(mDisconnectedState); 7655 } else { 7656 if (DBG) log("Ignore unspecified fail event during WPS connection"); 7657 } 7658 break; 7659 case WifiMonitor.WPS_TIMEOUT_EVENT: 7660 replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, 7661 WifiManager.WPS_TIMED_OUT); 7662 mSourceMessage.recycle(); 7663 mSourceMessage = null; 7664 transitionTo(mDisconnectedState); 7665 break; 7666 case WifiManager.START_WPS: 7667 replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); 7668 break; 7669 case WifiManager.CANCEL_WPS: 7670 if (mWifiNative.cancelWps()) { 7671 replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); 7672 } else { 7673 replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); 7674 } 7675 transitionTo(mDisconnectedState); 7676 break; 7677 /** 7678 * Defer all commands that can cause connections to a different network 7679 * or put the state machine out of connect mode 7680 */ 7681 case CMD_STOP_DRIVER: 7682 case CMD_SET_OPERATIONAL_MODE: 7683 case WifiManager.CONNECT_NETWORK: 7684 case CMD_ENABLE_NETWORK: 7685 case CMD_RECONNECT: 7686 case CMD_REASSOCIATE: 7687 deferMessage(message); 7688 break; 7689 case CMD_AUTO_CONNECT: 7690 case CMD_AUTO_ROAM: 7691 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7692 return HANDLED; 7693 case CMD_START_SCAN: 7694 messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; 7695 return HANDLED; 7696 case WifiMonitor.NETWORK_DISCONNECTION_EVENT: 7697 if (DBG) log("Network connection lost"); 7698 handleNetworkDisconnect(); 7699 break; 7700 case WifiMonitor.ASSOCIATION_REJECTION_EVENT: 7701 if (DBG) log("Ignore Assoc reject event during WPS Connection"); 7702 break; 7703 case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: 7704 // Disregard auth failure events during WPS connection. The 7705 // EAP sequence is retried several times, and there might be 7706 // failures (especially for wps pin). We will get a WPS_XXX 7707 // event at the end of the sequence anyway. 7708 if (DBG) log("Ignore auth failure during WPS connection"); 7709 break; 7710 case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: 7711 // Throw away supplicant state changes when WPS is running. 7712 // We will start getting supplicant state changes once we get 7713 // a WPS success or failure 7714 break; 7715 default: 7716 return NOT_HANDLED; 7717 } 7718 return HANDLED; 7719 } 7720 7721 @Override 7722 public void exit() { 7723 mWifiConfigStore.enableAllNetworks(); 7724 mWifiConfigStore.loadConfiguredNetworks(); 7725 } 7726 } 7727 7728 class SoftApStartingState extends State { 7729 @Override 7730 public void enter() { 7731 final Message message = getCurrentMessage(); 7732 if (message.what == CMD_START_AP) { 7733 final WifiConfiguration config = (WifiConfiguration) message.obj; 7734 7735 if (config == null) { 7736 mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); 7737 } else { 7738 mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); 7739 startSoftApWithConfig(config); 7740 } 7741 } else { 7742 throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); 7743 } 7744 } 7745 @Override 7746 public boolean processMessage(Message message) { 7747 logStateAndMessage(message, getClass().getSimpleName()); 7748 7749 switch(message.what) { 7750 case CMD_START_SUPPLICANT: 7751 case CMD_STOP_SUPPLICANT: 7752 case CMD_START_AP: 7753 case CMD_STOP_AP: 7754 case CMD_START_DRIVER: 7755 case CMD_STOP_DRIVER: 7756 case CMD_SET_OPERATIONAL_MODE: 7757 case CMD_SET_COUNTRY_CODE: 7758 case CMD_SET_FREQUENCY_BAND: 7759 case CMD_START_PACKET_FILTERING: 7760 case CMD_STOP_PACKET_FILTERING: 7761 case CMD_TETHER_STATE_CHANGE: 7762 deferMessage(message); 7763 break; 7764 case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: 7765 WifiConfiguration config = (WifiConfiguration) message.obj; 7766 if (config != null) { 7767 startSoftApWithConfig(config); 7768 } else { 7769 loge("Softap config is null!"); 7770 sendMessage(CMD_START_AP_FAILURE); 7771 } 7772 break; 7773 case CMD_START_AP_SUCCESS: 7774 setWifiApState(WIFI_AP_STATE_ENABLED); 7775 transitionTo(mSoftApStartedState); 7776 break; 7777 case CMD_START_AP_FAILURE: 7778 setWifiApState(WIFI_AP_STATE_FAILED); 7779 transitionTo(mInitialState); 7780 break; 7781 default: 7782 return NOT_HANDLED; 7783 } 7784 return HANDLED; 7785 } 7786 } 7787 7788 class SoftApStartedState extends State { 7789 @Override 7790 public boolean processMessage(Message message) { 7791 logStateAndMessage(message, getClass().getSimpleName()); 7792 7793 switch(message.what) { 7794 case CMD_STOP_AP: 7795 if (DBG) log("Stopping Soft AP"); 7796 /* We have not tethered at this point, so we just shutdown soft Ap */ 7797 try { 7798 mNwService.stopAccessPoint(mInterfaceName); 7799 } catch(Exception e) { 7800 loge("Exception in stopAccessPoint()"); 7801 } 7802 setWifiApState(WIFI_AP_STATE_DISABLED); 7803 transitionTo(mInitialState); 7804 break; 7805 case CMD_START_AP: 7806 // Ignore a start on a running access point 7807 break; 7808 // Fail client mode operation when soft AP is enabled 7809 case CMD_START_SUPPLICANT: 7810 loge("Cannot start supplicant with a running soft AP"); 7811 setWifiState(WIFI_STATE_UNKNOWN); 7812 break; 7813 case CMD_TETHER_STATE_CHANGE: 7814 TetherStateChange stateChange = (TetherStateChange) message.obj; 7815 if (startTethering(stateChange.available)) { 7816 transitionTo(mTetheringState); 7817 } 7818 break; 7819 default: 7820 return NOT_HANDLED; 7821 } 7822 return HANDLED; 7823 } 7824 } 7825 7826 class TetheringState extends State { 7827 @Override 7828 public void enter() { 7829 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 7830 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 7831 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 7832 } 7833 @Override 7834 public boolean processMessage(Message message) { 7835 logStateAndMessage(message, getClass().getSimpleName()); 7836 7837 switch(message.what) { 7838 case CMD_TETHER_STATE_CHANGE: 7839 TetherStateChange stateChange = (TetherStateChange) message.obj; 7840 if (isWifiTethered(stateChange.active)) { 7841 transitionTo(mTetheredState); 7842 } 7843 return HANDLED; 7844 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 7845 if (message.arg1 == mTetherToken) { 7846 loge("Failed to get tether update, shutdown soft access point"); 7847 transitionTo(mSoftApStartedState); 7848 // Needs to be first thing handled 7849 sendMessageAtFrontOfQueue(CMD_STOP_AP); 7850 } 7851 break; 7852 case CMD_START_SUPPLICANT: 7853 case CMD_STOP_SUPPLICANT: 7854 case CMD_START_AP: 7855 case CMD_STOP_AP: 7856 case CMD_START_DRIVER: 7857 case CMD_STOP_DRIVER: 7858 case CMD_SET_OPERATIONAL_MODE: 7859 case CMD_SET_COUNTRY_CODE: 7860 case CMD_SET_FREQUENCY_BAND: 7861 case CMD_START_PACKET_FILTERING: 7862 case CMD_STOP_PACKET_FILTERING: 7863 deferMessage(message); 7864 break; 7865 default: 7866 return NOT_HANDLED; 7867 } 7868 return HANDLED; 7869 } 7870 } 7871 7872 class TetheredState extends State { 7873 @Override 7874 public boolean processMessage(Message message) { 7875 logStateAndMessage(message, getClass().getSimpleName()); 7876 7877 switch(message.what) { 7878 case CMD_TETHER_STATE_CHANGE: 7879 TetherStateChange stateChange = (TetherStateChange) message.obj; 7880 if (!isWifiTethered(stateChange.active)) { 7881 loge("Tethering reports wifi as untethered!, shut down soft Ap"); 7882 setHostApRunning(null, false); 7883 setHostApRunning(null, true); 7884 } 7885 return HANDLED; 7886 case CMD_STOP_AP: 7887 if (DBG) log("Untethering before stopping AP"); 7888 setWifiApState(WIFI_AP_STATE_DISABLING); 7889 stopTethering(); 7890 transitionTo(mUntetheringState); 7891 // More work to do after untethering 7892 deferMessage(message); 7893 break; 7894 default: 7895 return NOT_HANDLED; 7896 } 7897 return HANDLED; 7898 } 7899 } 7900 7901 class UntetheringState extends State { 7902 @Override 7903 public void enter() { 7904 /* Send ourselves a delayed message to shut down if tethering fails to notify */ 7905 sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, 7906 ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); 7907 7908 } 7909 @Override 7910 public boolean processMessage(Message message) { 7911 logStateAndMessage(message, getClass().getSimpleName()); 7912 7913 switch(message.what) { 7914 case CMD_TETHER_STATE_CHANGE: 7915 TetherStateChange stateChange = (TetherStateChange) message.obj; 7916 7917 /* Wait till wifi is untethered */ 7918 if (isWifiTethered(stateChange.active)) break; 7919 7920 transitionTo(mSoftApStartedState); 7921 break; 7922 case CMD_TETHER_NOTIFICATION_TIMED_OUT: 7923 if (message.arg1 == mTetherToken) { 7924 loge("Failed to get tether update, force stop access point"); 7925 transitionTo(mSoftApStartedState); 7926 } 7927 break; 7928 case CMD_START_SUPPLICANT: 7929 case CMD_STOP_SUPPLICANT: 7930 case CMD_START_AP: 7931 case CMD_STOP_AP: 7932 case CMD_START_DRIVER: 7933 case CMD_STOP_DRIVER: 7934 case CMD_SET_OPERATIONAL_MODE: 7935 case CMD_SET_COUNTRY_CODE: 7936 case CMD_SET_FREQUENCY_BAND: 7937 case CMD_START_PACKET_FILTERING: 7938 case CMD_STOP_PACKET_FILTERING: 7939 deferMessage(message); 7940 break; 7941 default: 7942 return NOT_HANDLED; 7943 } 7944 return HANDLED; 7945 } 7946 } 7947 7948 //State machine initiated requests can have replyTo set to null indicating 7949 //there are no recepients, we ignore those reply actions 7950 private void replyToMessage(Message msg, int what) { 7951 if (msg.replyTo == null) return; 7952 Message dstMsg = obtainMessageWithArg2(msg); 7953 dstMsg.what = what; 7954 mReplyChannel.replyToMessage(msg, dstMsg); 7955 } 7956 7957 private void replyToMessage(Message msg, int what, int arg1) { 7958 if (msg.replyTo == null) return; 7959 Message dstMsg = obtainMessageWithArg2(msg); 7960 dstMsg.what = what; 7961 dstMsg.arg1 = arg1; 7962 mReplyChannel.replyToMessage(msg, dstMsg); 7963 } 7964 7965 private void replyToMessage(Message msg, int what, Object obj) { 7966 if (msg.replyTo == null) return; 7967 Message dstMsg = obtainMessageWithArg2(msg); 7968 dstMsg.what = what; 7969 dstMsg.obj = obj; 7970 mReplyChannel.replyToMessage(msg, dstMsg); 7971 } 7972 7973 /** 7974 * arg2 on the source message has a unique id that needs to be retained in replies 7975 * to match the request 7976 7977 * see WifiManager for details 7978 */ 7979 private Message obtainMessageWithArg2(Message srcMsg) { 7980 Message msg = Message.obtain(); 7981 msg.arg2 = srcMsg.arg2; 7982 return msg; 7983 } 7984 7985 private static int parseHex(char ch) { 7986 if ('0' <= ch && ch <= '9') { 7987 return ch - '0'; 7988 } else if ('a' <= ch && ch <= 'f') { 7989 return ch - 'a' + 10; 7990 } else if ('A' <= ch && ch <= 'F') { 7991 return ch - 'A' + 10; 7992 } else { 7993 throw new NumberFormatException("" + ch + " is not a valid hex digit"); 7994 } 7995 } 7996 7997 private byte[] parseHex(String hex) { 7998 /* This only works for good input; don't throw bad data at it */ 7999 if (hex == null) { 8000 return new byte[0]; 8001 } 8002 8003 if (hex.length() % 2 != 0) { 8004 throw new NumberFormatException(hex + " is not a valid hex string"); 8005 } 8006 8007 byte[] result = new byte[(hex.length())/2 + 1]; 8008 result[0] = (byte) ((hex.length())/2); 8009 for (int i = 0, j = 1; i < hex.length(); i += 2, j++) { 8010 int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); 8011 byte b = (byte) (val & 0xFF); 8012 result[j] = b; 8013 } 8014 8015 return result; 8016 } 8017 8018 private static String makeHex(byte[] bytes) { 8019 StringBuilder sb = new StringBuilder(); 8020 for (byte b : bytes) { 8021 sb.append(String.format("%02x", b)); 8022 } 8023 return sb.toString(); 8024 } 8025 8026 private static String makeHex(byte[] bytes, int from, int len) { 8027 StringBuilder sb = new StringBuilder(); 8028 for (int i = 0; i < len; i++) { 8029 sb.append(String.format("%02x", bytes[from+i])); 8030 } 8031 return sb.toString(); 8032 } 8033 8034 8035 private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { 8036 8037 int len = array1.length + array2.length + array3.length; 8038 8039 if (array1.length != 0) { 8040 len++; /* add another byte for size */ 8041 } 8042 8043 if (array2.length != 0) { 8044 len++; /* add another byte for size */ 8045 } 8046 8047 if (array3.length != 0) { 8048 len++; /* add another byte for size */ 8049 } 8050 8051 byte[] result = new byte[len]; 8052 8053 int index = 0; 8054 if (array1.length != 0) { 8055 result[index] = (byte) (array1.length & 0xFF); 8056 index++; 8057 for (byte b : array1) { 8058 result[index] = b; 8059 index++; 8060 } 8061 } 8062 8063 if (array2.length != 0) { 8064 result[index] = (byte) (array2.length & 0xFF); 8065 index++; 8066 for (byte b : array2) { 8067 result[index] = b; 8068 index++; 8069 } 8070 } 8071 8072 if (array3.length != 0) { 8073 result[index] = (byte) (array3.length & 0xFF); 8074 index++; 8075 for (byte b : array3) { 8076 result[index] = b; 8077 index++; 8078 } 8079 } 8080 return result; 8081 } 8082 8083 void handleGsmAuthRequest(SimAuthRequestData requestData) { 8084 if (targetWificonfiguration == null 8085 || targetWificonfiguration.networkId == requestData.networkId) { 8086 logd("id matches targetWifiConfiguration"); 8087 } else { 8088 logd("id does not match targetWifiConfiguration"); 8089 return; 8090 } 8091 8092 TelephonyManager tm = (TelephonyManager) 8093 mContext.getSystemService(Context.TELEPHONY_SERVICE); 8094 8095 if (tm != null) { 8096 StringBuilder sb = new StringBuilder(); 8097 for (String challenge : requestData.challenges) { 8098 8099 logd("RAND = " + challenge); 8100 8101 byte[] rand = null; 8102 try { 8103 rand = parseHex(challenge); 8104 } catch (NumberFormatException e) { 8105 loge("malformed challenge"); 8106 continue; 8107 } 8108 8109 String base64Challenge = android.util.Base64.encodeToString( 8110 rand, android.util.Base64.NO_WRAP); 8111 /* 8112 * appType = 1 => SIM, 2 => USIM according to 8113 * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx 8114 */ 8115 int appType = 2; 8116 String tmResponse = tm.getIccSimChallengeResponse(appType, base64Challenge); 8117 logv("Raw Response - " + tmResponse); 8118 8119 if (tmResponse != null && tmResponse.length() > 4) { 8120 byte[] result = android.util.Base64.decode(tmResponse, 8121 android.util.Base64.DEFAULT); 8122 logv("Hex Response -" + makeHex(result)); 8123 int sres_len = result[0]; 8124 String sres = makeHex(result, 1, sres_len); 8125 int kc_offset = 1+sres_len; 8126 int kc_len = result[kc_offset]; 8127 String kc = makeHex(result, 1+kc_offset, kc_len); 8128 sb.append(":" + kc + ":" + sres); 8129 logv("kc:" + kc + " sres:" + sres); 8130 } else { 8131 loge("bad response - " + tmResponse); 8132 } 8133 } 8134 8135 String response = sb.toString(); 8136 logv("Supplicant Response -" + response); 8137 mWifiNative.simAuthResponse(requestData.networkId, response); 8138 } else { 8139 loge("could not get telephony manager"); 8140 } 8141 } 8142 8143 void handle3GAuthRequest(SimAuthRequestData requestData) { 8144 8145 } 8146} 8147