ConnectivityService.java revision f5729a6a1573ba27f69a5c5dc144be3f8f60b026
1/* 2 * Copyright (C) 2008 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; 18 19import static android.Manifest.permission.MANAGE_NETWORK_POLICY; 20import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE; 21import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; 22import static android.net.ConnectivityManager.CONNECTIVITY_ACTION_IMMEDIATE; 23import static android.net.ConnectivityManager.TYPE_BLUETOOTH; 24import static android.net.ConnectivityManager.TYPE_DUMMY; 25import static android.net.ConnectivityManager.TYPE_ETHERNET; 26import static android.net.ConnectivityManager.TYPE_MOBILE; 27import static android.net.ConnectivityManager.TYPE_WIFI; 28import static android.net.ConnectivityManager.TYPE_WIMAX; 29import static android.net.ConnectivityManager.TYPE_PROXY; 30import static android.net.ConnectivityManager.getNetworkTypeName; 31import static android.net.ConnectivityManager.isNetworkTypeValid; 32import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 33import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 34 35import android.app.AlarmManager; 36import android.app.Notification; 37import android.app.NotificationManager; 38import android.app.PendingIntent; 39import android.bluetooth.BluetoothTetheringDataTracker; 40import android.content.ActivityNotFoundException; 41import android.content.BroadcastReceiver; 42import android.content.ContentResolver; 43import android.content.Context; 44import android.content.ContextWrapper; 45import android.content.Intent; 46import android.content.IntentFilter; 47import android.content.pm.PackageManager; 48import android.content.res.Configuration; 49import android.content.res.Resources; 50import android.database.ContentObserver; 51import android.net.CaptivePortalTracker; 52import android.net.ConnectivityManager; 53import android.net.DummyDataStateTracker; 54import android.net.EthernetDataTracker; 55import android.net.IConnectivityManager; 56import android.net.INetworkManagementEventObserver; 57import android.net.INetworkPolicyListener; 58import android.net.INetworkPolicyManager; 59import android.net.INetworkStatsService; 60import android.net.LinkAddress; 61import android.net.LinkProperties; 62import android.net.LinkProperties.CompareResult; 63import android.net.LinkQualityInfo; 64import android.net.MobileDataStateTracker; 65import android.net.NetworkConfig; 66import android.net.NetworkInfo; 67import android.net.NetworkInfo.DetailedState; 68import android.net.NetworkQuotaInfo; 69import android.net.NetworkState; 70import android.net.NetworkStateTracker; 71import android.net.NetworkUtils; 72import android.net.Proxy; 73import android.net.ProxyDataTracker; 74import android.net.ProxyProperties; 75import android.net.RouteInfo; 76import android.net.SamplingDataTracker; 77import android.net.Uri; 78import android.net.wifi.WifiStateTracker; 79import android.net.wimax.WimaxManagerConstants; 80import android.os.AsyncTask; 81import android.os.Binder; 82import android.os.Build; 83import android.os.FileUtils; 84import android.os.Handler; 85import android.os.HandlerThread; 86import android.os.IBinder; 87import android.os.INetworkManagementService; 88import android.os.Looper; 89import android.os.Message; 90import android.os.Messenger; 91import android.os.ParcelFileDescriptor; 92import android.os.PowerManager; 93import android.os.Process; 94import android.os.RemoteException; 95import android.os.ServiceManager; 96import android.os.SystemClock; 97import android.os.SystemProperties; 98import android.os.UserHandle; 99import android.provider.Settings; 100import android.security.Credentials; 101import android.security.KeyStore; 102import android.telephony.TelephonyManager; 103import android.text.TextUtils; 104import android.util.Slog; 105import android.util.SparseArray; 106import android.util.SparseIntArray; 107import android.util.Xml; 108 109import com.android.internal.R; 110import com.android.internal.annotations.GuardedBy; 111import com.android.internal.net.LegacyVpnInfo; 112import com.android.internal.net.VpnConfig; 113import com.android.internal.net.VpnProfile; 114import com.android.internal.telephony.DctConstants; 115import com.android.internal.telephony.Phone; 116import com.android.internal.telephony.PhoneConstants; 117import com.android.internal.util.IndentingPrintWriter; 118import com.android.internal.util.XmlUtils; 119import com.android.server.am.BatteryStatsService; 120import com.android.server.connectivity.DataConnectionStats; 121import com.android.server.connectivity.Nat464Xlat; 122import com.android.server.connectivity.PacManager; 123import com.android.server.connectivity.Tethering; 124import com.android.server.connectivity.Vpn; 125import com.android.server.net.BaseNetworkObserver; 126import com.android.server.net.LockdownVpnTracker; 127import com.google.android.collect.Lists; 128import com.google.android.collect.Sets; 129 130import dalvik.system.DexClassLoader; 131 132import org.xmlpull.v1.XmlPullParser; 133import org.xmlpull.v1.XmlPullParserException; 134 135import java.io.File; 136import java.io.FileDescriptor; 137import java.io.FileNotFoundException; 138import java.io.FileReader; 139import java.io.IOException; 140import java.io.PrintWriter; 141import java.lang.reflect.Constructor; 142import java.net.HttpURLConnection; 143import java.net.Inet4Address; 144import java.net.Inet6Address; 145import java.net.InetAddress; 146import java.net.URL; 147import java.net.URLConnection; 148import java.net.UnknownHostException; 149import java.util.ArrayList; 150import java.util.Arrays; 151import java.util.Collection; 152import java.util.GregorianCalendar; 153import java.util.HashMap; 154import java.util.HashSet; 155import java.util.List; 156import java.util.Map; 157import java.util.Random; 158import java.util.concurrent.atomic.AtomicBoolean; 159import java.util.concurrent.atomic.AtomicInteger; 160 161import javax.net.ssl.HostnameVerifier; 162import javax.net.ssl.HttpsURLConnection; 163import javax.net.ssl.SSLSession; 164 165/** 166 * @hide 167 */ 168public class ConnectivityService extends IConnectivityManager.Stub { 169 private static final String TAG = "ConnectivityService"; 170 171 private static final boolean DBG = true; 172 private static final boolean VDBG = false; 173 174 private static final boolean LOGD_RULES = false; 175 176 // TODO: create better separation between radio types and network types 177 178 // how long to wait before switching back to a radio's default network 179 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 180 // system property that can override the above value 181 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 182 "android.telephony.apn-restore"; 183 184 // Default value if FAIL_FAST_TIME_MS is not set 185 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 186 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 187 private static final String FAIL_FAST_TIME_MS = 188 "persist.radio.fail_fast_time_ms"; 189 190 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 191 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 192 193 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 194 195 private PendingIntent mSampleIntervalElapsedIntent; 196 197 // Set network sampling interval at 12 minutes, this way, even if the timers get 198 // aggregated, it will fire at around 15 minutes, which should allow us to 199 // aggregate this timer with other timers (specially the socket keep alive timers) 200 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (VDBG ? 30 : 12 * 60); 201 202 // start network sampling a minute after booting ... 203 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (VDBG ? 30 : 60); 204 205 AlarmManager mAlarmManager; 206 207 // used in recursive route setting to add gateways for the host for which 208 // a host route was requested. 209 private static final int MAX_HOSTROUTE_CYCLE_COUNT = 10; 210 211 private Tethering mTethering; 212 213 private KeyStore mKeyStore; 214 215 @GuardedBy("mVpns") 216 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 217 private VpnCallback mVpnCallback = new VpnCallback(); 218 219 private boolean mLockdownEnabled; 220 private LockdownVpnTracker mLockdownTracker; 221 222 private Nat464Xlat mClat; 223 224 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 225 private Object mRulesLock = new Object(); 226 /** Currently active network rules by UID. */ 227 private SparseIntArray mUidRules = new SparseIntArray(); 228 /** Set of ifaces that are costly. */ 229 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 230 231 /** 232 * Sometimes we want to refer to the individual network state 233 * trackers separately, and sometimes we just want to treat them 234 * abstractly. 235 */ 236 private NetworkStateTracker mNetTrackers[]; 237 238 /* Handles captive portal check on a network */ 239 private CaptivePortalTracker mCaptivePortalTracker; 240 241 /** 242 * The link properties that define the current links 243 */ 244 private LinkProperties mCurrentLinkProperties[]; 245 246 /** 247 * A per Net list of the PID's that requested access to the net 248 * used both as a refcount and for per-PID DNS selection 249 */ 250 private List<Integer> mNetRequestersPids[]; 251 252 // priority order of the nettrackers 253 // (excluding dynamically set mNetworkPreference) 254 // TODO - move mNetworkTypePreference into this 255 private int[] mPriorityList; 256 257 private Context mContext; 258 private int mNetworkPreference; 259 private int mActiveDefaultNetwork = -1; 260 // 0 is full bad, 100 is full good 261 private int mDefaultInetCondition = 0; 262 private int mDefaultInetConditionPublished = 0; 263 private boolean mInetConditionChangeInFlight = false; 264 private int mDefaultConnectionSequence = 0; 265 266 private Object mDnsLock = new Object(); 267 private int mNumDnsEntries; 268 269 private boolean mTestMode; 270 private static ConnectivityService sServiceInstance; 271 272 private INetworkManagementService mNetd; 273 private INetworkPolicyManager mPolicyManager; 274 275 private static final int ENABLED = 1; 276 private static final int DISABLED = 0; 277 278 private static final boolean ADD = true; 279 private static final boolean REMOVE = false; 280 281 private static final boolean TO_DEFAULT_TABLE = true; 282 private static final boolean TO_SECONDARY_TABLE = false; 283 284 private static final boolean EXEMPT = true; 285 private static final boolean UNEXEMPT = false; 286 287 /** 288 * used internally as a delayed event to make us switch back to the 289 * default network 290 */ 291 private static final int EVENT_RESTORE_DEFAULT_NETWORK = 1; 292 293 /** 294 * used internally to change our mobile data enabled flag 295 */ 296 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 297 298 /** 299 * used internally to change our network preference setting 300 * arg1 = networkType to prefer 301 */ 302 private static final int EVENT_SET_NETWORK_PREFERENCE = 3; 303 304 /** 305 * used internally to synchronize inet condition reports 306 * arg1 = networkType 307 * arg2 = condition (0 bad, 100 good) 308 */ 309 private static final int EVENT_INET_CONDITION_CHANGE = 4; 310 311 /** 312 * used internally to mark the end of inet condition hold periods 313 * arg1 = networkType 314 */ 315 private static final int EVENT_INET_CONDITION_HOLD_END = 5; 316 317 /** 318 * used internally to set enable/disable cellular data 319 * arg1 = ENBALED or DISABLED 320 */ 321 private static final int EVENT_SET_MOBILE_DATA = 7; 322 323 /** 324 * used internally to clear a wakelock when transitioning 325 * from one net to another 326 */ 327 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 328 329 /** 330 * used internally to reload global proxy settings 331 */ 332 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 333 334 /** 335 * used internally to set external dependency met/unmet 336 * arg1 = ENABLED (met) or DISABLED (unmet) 337 * arg2 = NetworkType 338 */ 339 private static final int EVENT_SET_DEPENDENCY_MET = 10; 340 341 /** 342 * used internally to send a sticky broadcast delayed. 343 */ 344 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 345 346 /** 347 * Used internally to 348 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 349 */ 350 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 351 352 private static final int EVENT_VPN_STATE_CHANGED = 13; 353 354 /** 355 * Used internally to disable fail fast of mobile data 356 */ 357 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 358 359 /** 360 * user internally to indicate that data sampling interval is up 361 */ 362 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 363 364 /** 365 * PAC manager has received new port. 366 */ 367 private static final int EVENT_PROXY_HAS_CHANGED = 16; 368 369 /** Handler used for internal events. */ 370 private InternalHandler mHandler; 371 /** Handler used for incoming {@link NetworkStateTracker} events. */ 372 private NetworkStateTrackerHandler mTrackerHandler; 373 374 // list of DeathRecipients used to make sure features are turned off when 375 // a process dies 376 private List<FeatureUser> mFeatureUsers; 377 378 private boolean mSystemReady; 379 private Intent mInitialBroadcast; 380 381 private PowerManager.WakeLock mNetTransitionWakeLock; 382 private String mNetTransitionWakeLockCausedBy = ""; 383 private int mNetTransitionWakeLockSerialNumber; 384 private int mNetTransitionWakeLockTimeout; 385 386 private InetAddress mDefaultDns; 387 388 // Lock for protecting access to mAddedRoutes and mExemptAddresses 389 private final Object mRoutesLock = new Object(); 390 391 // this collection is used to refcount the added routes - if there are none left 392 // it's time to remove the route from the route table 393 @GuardedBy("mRoutesLock") 394 private Collection<RouteInfo> mAddedRoutes = new ArrayList<RouteInfo>(); 395 396 // this collection corresponds to the entries of mAddedRoutes that have routing exemptions 397 // used to handle cleanup of exempt rules 398 @GuardedBy("mRoutesLock") 399 private Collection<LinkAddress> mExemptAddresses = new ArrayList<LinkAddress>(); 400 401 // used in DBG mode to track inet condition reports 402 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 403 private ArrayList mInetLog; 404 405 // track the current default http proxy - tell the world if we get a new one (real change) 406 private ProxyProperties mDefaultProxy = null; 407 private Object mProxyLock = new Object(); 408 private boolean mDefaultProxyDisabled = false; 409 410 // track the global proxy. 411 private ProxyProperties mGlobalProxy = null; 412 413 private PacManager mPacManager = null; 414 415 private SettingsObserver mSettingsObserver; 416 417 NetworkConfig[] mNetConfigs; 418 int mNetworksDefined; 419 420 private static class RadioAttributes { 421 public int mSimultaneity; 422 public int mType; 423 public RadioAttributes(String init) { 424 String fragments[] = init.split(","); 425 mType = Integer.parseInt(fragments[0]); 426 mSimultaneity = Integer.parseInt(fragments[1]); 427 } 428 } 429 RadioAttributes[] mRadioAttributes; 430 431 // the set of network types that can only be enabled by system/sig apps 432 List mProtectedNetworks; 433 434 private DataConnectionStats mDataConnectionStats; 435 436 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 437 438 TelephonyManager mTelephonyManager; 439 440 public ConnectivityService(Context context, INetworkManagementService netd, 441 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 442 // Currently, omitting a NetworkFactory will create one internally 443 // TODO: create here when we have cleaner WiMAX support 444 this(context, netd, statsService, policyManager, null); 445 } 446 447 public ConnectivityService(Context context, INetworkManagementService netManager, 448 INetworkStatsService statsService, INetworkPolicyManager policyManager, 449 NetworkFactory netFactory) { 450 if (DBG) log("ConnectivityService starting up"); 451 452 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 453 handlerThread.start(); 454 mHandler = new InternalHandler(handlerThread.getLooper()); 455 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 456 457 if (netFactory == null) { 458 netFactory = new DefaultNetworkFactory(context, mTrackerHandler); 459 } 460 461 // setup our unique device name 462 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 463 String id = Settings.Secure.getString(context.getContentResolver(), 464 Settings.Secure.ANDROID_ID); 465 if (id != null && id.length() > 0) { 466 String name = new String("android-").concat(id); 467 SystemProperties.set("net.hostname", name); 468 } 469 } 470 471 // read our default dns server ip 472 String dns = Settings.Global.getString(context.getContentResolver(), 473 Settings.Global.DEFAULT_DNS_SERVER); 474 if (dns == null || dns.length() == 0) { 475 dns = context.getResources().getString( 476 com.android.internal.R.string.config_default_dns_server); 477 } 478 try { 479 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 480 } catch (IllegalArgumentException e) { 481 loge("Error setting defaultDns using " + dns); 482 } 483 484 mContext = checkNotNull(context, "missing Context"); 485 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 486 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 487 mKeyStore = KeyStore.getInstance(); 488 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 489 490 try { 491 mPolicyManager.registerListener(mPolicyListener); 492 } catch (RemoteException e) { 493 // ouch, no rules updates means some processes may never get network 494 loge("unable to register INetworkPolicyListener" + e.toString()); 495 } 496 497 final PowerManager powerManager = (PowerManager) context.getSystemService( 498 Context.POWER_SERVICE); 499 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 500 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 501 com.android.internal.R.integer.config_networkTransitionTimeout); 502 503 mNetTrackers = new NetworkStateTracker[ 504 ConnectivityManager.MAX_NETWORK_TYPE+1]; 505 mCurrentLinkProperties = new LinkProperties[ConnectivityManager.MAX_NETWORK_TYPE+1]; 506 507 mRadioAttributes = new RadioAttributes[ConnectivityManager.MAX_RADIO_TYPE+1]; 508 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 509 510 // Load device network attributes from resources 511 String[] raStrings = context.getResources().getStringArray( 512 com.android.internal.R.array.radioAttributes); 513 for (String raString : raStrings) { 514 RadioAttributes r = new RadioAttributes(raString); 515 if (VDBG) log("raString=" + raString + " r=" + r); 516 if (r.mType > ConnectivityManager.MAX_RADIO_TYPE) { 517 loge("Error in radioAttributes - ignoring attempt to define type " + r.mType); 518 continue; 519 } 520 if (mRadioAttributes[r.mType] != null) { 521 loge("Error in radioAttributes - ignoring attempt to redefine type " + 522 r.mType); 523 continue; 524 } 525 mRadioAttributes[r.mType] = r; 526 } 527 528 // TODO: What is the "correct" way to do determine if this is a wifi only device? 529 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 530 log("wifiOnly=" + wifiOnly); 531 String[] naStrings = context.getResources().getStringArray( 532 com.android.internal.R.array.networkAttributes); 533 for (String naString : naStrings) { 534 try { 535 NetworkConfig n = new NetworkConfig(naString); 536 if (VDBG) log("naString=" + naString + " config=" + n); 537 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 538 loge("Error in networkAttributes - ignoring attempt to define type " + 539 n.type); 540 continue; 541 } 542 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 543 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 544 n.type); 545 continue; 546 } 547 if (mNetConfigs[n.type] != null) { 548 loge("Error in networkAttributes - ignoring attempt to redefine type " + 549 n.type); 550 continue; 551 } 552 if (mRadioAttributes[n.radio] == null) { 553 loge("Error in networkAttributes - ignoring attempt to use undefined " + 554 "radio " + n.radio + " in network type " + n.type); 555 continue; 556 } 557 mNetConfigs[n.type] = n; 558 mNetworksDefined++; 559 } catch(Exception e) { 560 // ignore it - leave the entry null 561 } 562 } 563 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 564 565 mProtectedNetworks = new ArrayList<Integer>(); 566 int[] protectedNetworks = context.getResources().getIntArray( 567 com.android.internal.R.array.config_protectedNetworks); 568 for (int p : protectedNetworks) { 569 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 570 mProtectedNetworks.add(p); 571 } else { 572 if (DBG) loge("Ignoring protectedNetwork " + p); 573 } 574 } 575 576 // high priority first 577 mPriorityList = new int[mNetworksDefined]; 578 { 579 int insertionPoint = mNetworksDefined-1; 580 int currentLowest = 0; 581 int nextLowest = 0; 582 while (insertionPoint > -1) { 583 for (NetworkConfig na : mNetConfigs) { 584 if (na == null) continue; 585 if (na.priority < currentLowest) continue; 586 if (na.priority > currentLowest) { 587 if (na.priority < nextLowest || nextLowest == 0) { 588 nextLowest = na.priority; 589 } 590 continue; 591 } 592 mPriorityList[insertionPoint--] = na.type; 593 } 594 currentLowest = nextLowest; 595 nextLowest = 0; 596 } 597 } 598 599 // Update mNetworkPreference according to user mannually first then overlay config.xml 600 mNetworkPreference = getPersistedNetworkPreference(); 601 if (mNetworkPreference == -1) { 602 for (int n : mPriorityList) { 603 if (mNetConfigs[n].isDefault() && ConnectivityManager.isNetworkTypeValid(n)) { 604 mNetworkPreference = n; 605 break; 606 } 607 } 608 if (mNetworkPreference == -1) { 609 throw new IllegalStateException( 610 "You should set at least one default Network in config.xml!"); 611 } 612 } 613 614 mNetRequestersPids = 615 (List<Integer> [])new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE+1]; 616 for (int i : mPriorityList) { 617 mNetRequestersPids[i] = new ArrayList<Integer>(); 618 } 619 620 mFeatureUsers = new ArrayList<FeatureUser>(); 621 622 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 623 && SystemProperties.get("ro.build.type").equals("eng"); 624 625 // Create and start trackers for hard-coded networks 626 for (int targetNetworkType : mPriorityList) { 627 final NetworkConfig config = mNetConfigs[targetNetworkType]; 628 final NetworkStateTracker tracker; 629 try { 630 tracker = netFactory.createTracker(targetNetworkType, config); 631 mNetTrackers[targetNetworkType] = tracker; 632 } catch (IllegalArgumentException e) { 633 Slog.e(TAG, "Problem creating " + getNetworkTypeName(targetNetworkType) 634 + " tracker: " + e); 635 continue; 636 } 637 638 tracker.startMonitoring(context, mTrackerHandler); 639 if (config.isDefault()) { 640 tracker.reconnect(); 641 } 642 } 643 644 mTethering = new Tethering(mContext, mNetd, statsService, this, mHandler.getLooper()); 645 646 //set up the listener for user state for creating user VPNs 647 IntentFilter intentFilter = new IntentFilter(); 648 intentFilter.addAction(Intent.ACTION_USER_STARTING); 649 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 650 mContext.registerReceiverAsUser( 651 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 652 mClat = new Nat464Xlat(mContext, mNetd, this, mTrackerHandler); 653 654 try { 655 mNetd.registerObserver(mTethering); 656 mNetd.registerObserver(mDataActivityObserver); 657 mNetd.registerObserver(mClat); 658 } catch (RemoteException e) { 659 loge("Error registering observer :" + e); 660 } 661 662 if (DBG) { 663 mInetLog = new ArrayList(); 664 } 665 666 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 667 mSettingsObserver.observe(mContext); 668 669 mDataConnectionStats = new DataConnectionStats(mContext); 670 mDataConnectionStats.startMonitoring(); 671 672 // start network sampling .. 673 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED, null); 674 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 675 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 676 677 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 678 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 679 680 IntentFilter filter = new IntentFilter(); 681 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 682 mContext.registerReceiver( 683 new BroadcastReceiver() { 684 @Override 685 public void onReceive(Context context, Intent intent) { 686 String action = intent.getAction(); 687 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 688 mHandler.sendMessage(mHandler.obtainMessage 689 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 690 } 691 } 692 }, 693 new IntentFilter(filter)); 694 695 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 696 697 filter = new IntentFilter(); 698 filter.addAction(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 699 mContext.registerReceiver(mProvisioningReceiver, filter); 700 } 701 702 /** 703 * Factory that creates {@link NetworkStateTracker} instances using given 704 * {@link NetworkConfig}. 705 */ 706 public interface NetworkFactory { 707 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config); 708 } 709 710 private static class DefaultNetworkFactory implements NetworkFactory { 711 private final Context mContext; 712 private final Handler mTrackerHandler; 713 714 public DefaultNetworkFactory(Context context, Handler trackerHandler) { 715 mContext = context; 716 mTrackerHandler = trackerHandler; 717 } 718 719 @Override 720 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config) { 721 switch (config.radio) { 722 case TYPE_WIFI: 723 return new WifiStateTracker(targetNetworkType, config.name); 724 case TYPE_MOBILE: 725 return new MobileDataStateTracker(targetNetworkType, config.name); 726 case TYPE_DUMMY: 727 return new DummyDataStateTracker(targetNetworkType, config.name); 728 case TYPE_BLUETOOTH: 729 return BluetoothTetheringDataTracker.getInstance(); 730 case TYPE_WIMAX: 731 return makeWimaxStateTracker(mContext, mTrackerHandler); 732 case TYPE_ETHERNET: 733 return EthernetDataTracker.getInstance(); 734 case TYPE_PROXY: 735 return new ProxyDataTracker(); 736 default: 737 throw new IllegalArgumentException( 738 "Trying to create a NetworkStateTracker for an unknown radio type: " 739 + config.radio); 740 } 741 } 742 } 743 744 /** 745 * Loads external WiMAX library and registers as system service, returning a 746 * {@link NetworkStateTracker} for WiMAX. Caller is still responsible for 747 * invoking {@link NetworkStateTracker#startMonitoring(Context, Handler)}. 748 */ 749 private static NetworkStateTracker makeWimaxStateTracker( 750 Context context, Handler trackerHandler) { 751 // Initialize Wimax 752 DexClassLoader wimaxClassLoader; 753 Class wimaxStateTrackerClass = null; 754 Class wimaxServiceClass = null; 755 Class wimaxManagerClass; 756 String wimaxJarLocation; 757 String wimaxLibLocation; 758 String wimaxManagerClassName; 759 String wimaxServiceClassName; 760 String wimaxStateTrackerClassName; 761 762 NetworkStateTracker wimaxStateTracker = null; 763 764 boolean isWimaxEnabled = context.getResources().getBoolean( 765 com.android.internal.R.bool.config_wimaxEnabled); 766 767 if (isWimaxEnabled) { 768 try { 769 wimaxJarLocation = context.getResources().getString( 770 com.android.internal.R.string.config_wimaxServiceJarLocation); 771 wimaxLibLocation = context.getResources().getString( 772 com.android.internal.R.string.config_wimaxNativeLibLocation); 773 wimaxManagerClassName = context.getResources().getString( 774 com.android.internal.R.string.config_wimaxManagerClassname); 775 wimaxServiceClassName = context.getResources().getString( 776 com.android.internal.R.string.config_wimaxServiceClassname); 777 wimaxStateTrackerClassName = context.getResources().getString( 778 com.android.internal.R.string.config_wimaxStateTrackerClassname); 779 780 if (DBG) log("wimaxJarLocation: " + wimaxJarLocation); 781 wimaxClassLoader = new DexClassLoader(wimaxJarLocation, 782 new ContextWrapper(context).getCacheDir().getAbsolutePath(), 783 wimaxLibLocation, ClassLoader.getSystemClassLoader()); 784 785 try { 786 wimaxManagerClass = wimaxClassLoader.loadClass(wimaxManagerClassName); 787 wimaxStateTrackerClass = wimaxClassLoader.loadClass(wimaxStateTrackerClassName); 788 wimaxServiceClass = wimaxClassLoader.loadClass(wimaxServiceClassName); 789 } catch (ClassNotFoundException ex) { 790 loge("Exception finding Wimax classes: " + ex.toString()); 791 return null; 792 } 793 } catch(Resources.NotFoundException ex) { 794 loge("Wimax Resources does not exist!!! "); 795 return null; 796 } 797 798 try { 799 if (DBG) log("Starting Wimax Service... "); 800 801 Constructor wmxStTrkrConst = wimaxStateTrackerClass.getConstructor 802 (new Class[] {Context.class, Handler.class}); 803 wimaxStateTracker = (NetworkStateTracker) wmxStTrkrConst.newInstance( 804 context, trackerHandler); 805 806 Constructor wmxSrvConst = wimaxServiceClass.getDeclaredConstructor 807 (new Class[] {Context.class, wimaxStateTrackerClass}); 808 wmxSrvConst.setAccessible(true); 809 IBinder svcInvoker = (IBinder)wmxSrvConst.newInstance(context, wimaxStateTracker); 810 wmxSrvConst.setAccessible(false); 811 812 ServiceManager.addService(WimaxManagerConstants.WIMAX_SERVICE, svcInvoker); 813 814 } catch(Exception ex) { 815 loge("Exception creating Wimax classes: " + ex.toString()); 816 return null; 817 } 818 } else { 819 loge("Wimax is not enabled or not added to the network attributes!!! "); 820 return null; 821 } 822 823 return wimaxStateTracker; 824 } 825 826 /** 827 * Sets the preferred network. 828 * @param preference the new preference 829 */ 830 public void setNetworkPreference(int preference) { 831 enforceChangePermission(); 832 833 mHandler.sendMessage( 834 mHandler.obtainMessage(EVENT_SET_NETWORK_PREFERENCE, preference, 0)); 835 } 836 837 public int getNetworkPreference() { 838 enforceAccessPermission(); 839 int preference; 840 synchronized(this) { 841 preference = mNetworkPreference; 842 } 843 return preference; 844 } 845 846 private void handleSetNetworkPreference(int preference) { 847 if (ConnectivityManager.isNetworkTypeValid(preference) && 848 mNetConfigs[preference] != null && 849 mNetConfigs[preference].isDefault()) { 850 if (mNetworkPreference != preference) { 851 final ContentResolver cr = mContext.getContentResolver(); 852 Settings.Global.putInt(cr, Settings.Global.NETWORK_PREFERENCE, preference); 853 synchronized(this) { 854 mNetworkPreference = preference; 855 } 856 enforcePreference(); 857 } 858 } 859 } 860 861 private int getConnectivityChangeDelay() { 862 final ContentResolver cr = mContext.getContentResolver(); 863 864 /** Check system properties for the default value then use secure settings value, if any. */ 865 int defaultDelay = SystemProperties.getInt( 866 "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY, 867 ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT); 868 return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY, 869 defaultDelay); 870 } 871 872 private int getPersistedNetworkPreference() { 873 final ContentResolver cr = mContext.getContentResolver(); 874 875 final int networkPrefSetting = Settings.Global 876 .getInt(cr, Settings.Global.NETWORK_PREFERENCE, -1); 877 878 return networkPrefSetting; 879 } 880 881 /** 882 * Make the state of network connectivity conform to the preference settings 883 * In this method, we only tear down a non-preferred network. Establishing 884 * a connection to the preferred network is taken care of when we handle 885 * the disconnect event from the non-preferred network 886 * (see {@link #handleDisconnect(NetworkInfo)}). 887 */ 888 private void enforcePreference() { 889 if (mNetTrackers[mNetworkPreference].getNetworkInfo().isConnected()) 890 return; 891 892 if (!mNetTrackers[mNetworkPreference].isAvailable()) 893 return; 894 895 for (int t=0; t <= ConnectivityManager.MAX_RADIO_TYPE; t++) { 896 if (t != mNetworkPreference && mNetTrackers[t] != null && 897 mNetTrackers[t].getNetworkInfo().isConnected()) { 898 if (DBG) { 899 log("tearing down " + mNetTrackers[t].getNetworkInfo() + 900 " in enforcePreference"); 901 } 902 teardown(mNetTrackers[t]); 903 } 904 } 905 } 906 907 private boolean teardown(NetworkStateTracker netTracker) { 908 if (netTracker.teardown()) { 909 netTracker.setTeardownRequested(true); 910 return true; 911 } else { 912 return false; 913 } 914 } 915 916 /** 917 * Check if UID should be blocked from using the network represented by the 918 * given {@link NetworkStateTracker}. 919 */ 920 private boolean isNetworkBlocked(NetworkStateTracker tracker, int uid) { 921 final String iface = tracker.getLinkProperties().getInterfaceName(); 922 923 final boolean networkCostly; 924 final int uidRules; 925 synchronized (mRulesLock) { 926 networkCostly = mMeteredIfaces.contains(iface); 927 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 928 } 929 930 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 931 return true; 932 } 933 934 // no restrictive rules; network is visible 935 return false; 936 } 937 938 /** 939 * Return a filtered {@link NetworkInfo}, potentially marked 940 * {@link DetailedState#BLOCKED} based on 941 * {@link #isNetworkBlocked(NetworkStateTracker, int)}. 942 */ 943 private NetworkInfo getFilteredNetworkInfo(NetworkStateTracker tracker, int uid) { 944 NetworkInfo info = tracker.getNetworkInfo(); 945 if (isNetworkBlocked(tracker, uid)) { 946 // network is blocked; clone and override state 947 info = new NetworkInfo(info); 948 info.setDetailedState(DetailedState.BLOCKED, null, null); 949 } 950 if (mLockdownTracker != null) { 951 info = mLockdownTracker.augmentNetworkInfo(info); 952 } 953 return info; 954 } 955 956 /** 957 * Return NetworkInfo for the active (i.e., connected) network interface. 958 * It is assumed that at most one network is active at a time. If more 959 * than one is active, it is indeterminate which will be returned. 960 * @return the info for the active network, or {@code null} if none is 961 * active 962 */ 963 @Override 964 public NetworkInfo getActiveNetworkInfo() { 965 enforceAccessPermission(); 966 final int uid = Binder.getCallingUid(); 967 return getNetworkInfo(mActiveDefaultNetwork, uid); 968 } 969 970 /** 971 * Find the first Provisioning network. 972 * 973 * @return NetworkInfo or null if none. 974 */ 975 private NetworkInfo getProvisioningNetworkInfo() { 976 enforceAccessPermission(); 977 978 // Find the first Provisioning Network 979 NetworkInfo provNi = null; 980 for (NetworkInfo ni : getAllNetworkInfo()) { 981 if (ni.isConnectedToProvisioningNetwork()) { 982 provNi = ni; 983 break; 984 } 985 } 986 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 987 return provNi; 988 } 989 990 /** 991 * Find the first Provisioning network or the ActiveDefaultNetwork 992 * if there is no Provisioning network 993 * 994 * @return NetworkInfo or null if none. 995 */ 996 @Override 997 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 998 enforceAccessPermission(); 999 1000 NetworkInfo provNi = getProvisioningNetworkInfo(); 1001 if (provNi == null) { 1002 final int uid = Binder.getCallingUid(); 1003 provNi = getNetworkInfo(mActiveDefaultNetwork, uid); 1004 } 1005 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 1006 return provNi; 1007 } 1008 1009 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1010 enforceAccessPermission(); 1011 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 1012 final NetworkStateTracker tracker = mNetTrackers[mActiveDefaultNetwork]; 1013 if (tracker != null) { 1014 return tracker.getNetworkInfo(); 1015 } 1016 } 1017 return null; 1018 } 1019 1020 @Override 1021 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1022 enforceConnectivityInternalPermission(); 1023 return getNetworkInfo(mActiveDefaultNetwork, uid); 1024 } 1025 1026 @Override 1027 public NetworkInfo getNetworkInfo(int networkType) { 1028 enforceAccessPermission(); 1029 final int uid = Binder.getCallingUid(); 1030 return getNetworkInfo(networkType, uid); 1031 } 1032 1033 private NetworkInfo getNetworkInfo(int networkType, int uid) { 1034 NetworkInfo info = null; 1035 if (isNetworkTypeValid(networkType)) { 1036 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1037 if (tracker != null) { 1038 info = getFilteredNetworkInfo(tracker, uid); 1039 } 1040 } 1041 return info; 1042 } 1043 1044 @Override 1045 public NetworkInfo[] getAllNetworkInfo() { 1046 enforceAccessPermission(); 1047 final int uid = Binder.getCallingUid(); 1048 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1049 synchronized (mRulesLock) { 1050 for (NetworkStateTracker tracker : mNetTrackers) { 1051 if (tracker != null) { 1052 result.add(getFilteredNetworkInfo(tracker, uid)); 1053 } 1054 } 1055 } 1056 return result.toArray(new NetworkInfo[result.size()]); 1057 } 1058 1059 @Override 1060 public boolean isNetworkSupported(int networkType) { 1061 enforceAccessPermission(); 1062 return (isNetworkTypeValid(networkType) && (mNetTrackers[networkType] != null)); 1063 } 1064 1065 /** 1066 * Return LinkProperties for the active (i.e., connected) default 1067 * network interface. It is assumed that at most one default network 1068 * is active at a time. If more than one is active, it is indeterminate 1069 * which will be returned. 1070 * @return the ip properties for the active network, or {@code null} if 1071 * none is active 1072 */ 1073 @Override 1074 public LinkProperties getActiveLinkProperties() { 1075 return getLinkProperties(mActiveDefaultNetwork); 1076 } 1077 1078 @Override 1079 public LinkProperties getLinkProperties(int networkType) { 1080 enforceAccessPermission(); 1081 if (isNetworkTypeValid(networkType)) { 1082 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1083 if (tracker != null) { 1084 return tracker.getLinkProperties(); 1085 } 1086 } 1087 return null; 1088 } 1089 1090 @Override 1091 public NetworkState[] getAllNetworkState() { 1092 enforceAccessPermission(); 1093 final int uid = Binder.getCallingUid(); 1094 final ArrayList<NetworkState> result = Lists.newArrayList(); 1095 synchronized (mRulesLock) { 1096 for (NetworkStateTracker tracker : mNetTrackers) { 1097 if (tracker != null) { 1098 final NetworkInfo info = getFilteredNetworkInfo(tracker, uid); 1099 result.add(new NetworkState( 1100 info, tracker.getLinkProperties(), tracker.getLinkCapabilities())); 1101 } 1102 } 1103 } 1104 return result.toArray(new NetworkState[result.size()]); 1105 } 1106 1107 private NetworkState getNetworkStateUnchecked(int networkType) { 1108 if (isNetworkTypeValid(networkType)) { 1109 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1110 if (tracker != null) { 1111 return new NetworkState(tracker.getNetworkInfo(), tracker.getLinkProperties(), 1112 tracker.getLinkCapabilities()); 1113 } 1114 } 1115 return null; 1116 } 1117 1118 @Override 1119 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1120 enforceAccessPermission(); 1121 1122 final long token = Binder.clearCallingIdentity(); 1123 try { 1124 final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork); 1125 if (state != null) { 1126 try { 1127 return mPolicyManager.getNetworkQuotaInfo(state); 1128 } catch (RemoteException e) { 1129 } 1130 } 1131 return null; 1132 } finally { 1133 Binder.restoreCallingIdentity(token); 1134 } 1135 } 1136 1137 @Override 1138 public boolean isActiveNetworkMetered() { 1139 enforceAccessPermission(); 1140 final long token = Binder.clearCallingIdentity(); 1141 try { 1142 return isNetworkMeteredUnchecked(mActiveDefaultNetwork); 1143 } finally { 1144 Binder.restoreCallingIdentity(token); 1145 } 1146 } 1147 1148 private boolean isNetworkMeteredUnchecked(int networkType) { 1149 final NetworkState state = getNetworkStateUnchecked(networkType); 1150 if (state != null) { 1151 try { 1152 return mPolicyManager.isNetworkMetered(state); 1153 } catch (RemoteException e) { 1154 } 1155 } 1156 return false; 1157 } 1158 1159 public boolean setRadios(boolean turnOn) { 1160 boolean result = true; 1161 enforceChangePermission(); 1162 for (NetworkStateTracker t : mNetTrackers) { 1163 if (t != null) result = t.setRadio(turnOn) && result; 1164 } 1165 return result; 1166 } 1167 1168 public boolean setRadio(int netType, boolean turnOn) { 1169 enforceChangePermission(); 1170 if (!ConnectivityManager.isNetworkTypeValid(netType)) { 1171 return false; 1172 } 1173 NetworkStateTracker tracker = mNetTrackers[netType]; 1174 return tracker != null && tracker.setRadio(turnOn); 1175 } 1176 1177 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1178 @Override 1179 public void interfaceClassDataActivityChanged(String label, boolean active) { 1180 int deviceType = Integer.parseInt(label); 1181 sendDataActivityBroadcast(deviceType, active); 1182 } 1183 }; 1184 1185 /** 1186 * Used to notice when the calling process dies so we can self-expire 1187 * 1188 * Also used to know if the process has cleaned up after itself when 1189 * our auto-expire timer goes off. The timer has a link to an object. 1190 * 1191 */ 1192 private class FeatureUser implements IBinder.DeathRecipient { 1193 int mNetworkType; 1194 String mFeature; 1195 IBinder mBinder; 1196 int mPid; 1197 int mUid; 1198 long mCreateTime; 1199 1200 FeatureUser(int type, String feature, IBinder binder) { 1201 super(); 1202 mNetworkType = type; 1203 mFeature = feature; 1204 mBinder = binder; 1205 mPid = getCallingPid(); 1206 mUid = getCallingUid(); 1207 mCreateTime = System.currentTimeMillis(); 1208 1209 try { 1210 mBinder.linkToDeath(this, 0); 1211 } catch (RemoteException e) { 1212 binderDied(); 1213 } 1214 } 1215 1216 void unlinkDeathRecipient() { 1217 mBinder.unlinkToDeath(this, 0); 1218 } 1219 1220 public void binderDied() { 1221 log("ConnectivityService FeatureUser binderDied(" + 1222 mNetworkType + ", " + mFeature + ", " + mBinder + "), created " + 1223 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1224 stopUsingNetworkFeature(this, false); 1225 } 1226 1227 public void expire() { 1228 if (VDBG) { 1229 log("ConnectivityService FeatureUser expire(" + 1230 mNetworkType + ", " + mFeature + ", " + mBinder +"), created " + 1231 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1232 } 1233 stopUsingNetworkFeature(this, false); 1234 } 1235 1236 public boolean isSameUser(FeatureUser u) { 1237 if (u == null) return false; 1238 1239 return isSameUser(u.mPid, u.mUid, u.mNetworkType, u.mFeature); 1240 } 1241 1242 public boolean isSameUser(int pid, int uid, int networkType, String feature) { 1243 if ((mPid == pid) && (mUid == uid) && (mNetworkType == networkType) && 1244 TextUtils.equals(mFeature, feature)) { 1245 return true; 1246 } 1247 return false; 1248 } 1249 1250 public String toString() { 1251 return "FeatureUser("+mNetworkType+","+mFeature+","+mPid+","+mUid+"), created " + 1252 (System.currentTimeMillis() - mCreateTime) + " mSec ago"; 1253 } 1254 } 1255 1256 // javadoc from interface 1257 public int startUsingNetworkFeature(int networkType, String feature, 1258 IBinder binder) { 1259 long startTime = 0; 1260 if (DBG) { 1261 startTime = SystemClock.elapsedRealtime(); 1262 } 1263 if (VDBG) { 1264 log("startUsingNetworkFeature for net " + networkType + ": " + feature + ", uid=" 1265 + Binder.getCallingUid()); 1266 } 1267 enforceChangePermission(); 1268 try { 1269 if (!ConnectivityManager.isNetworkTypeValid(networkType) || 1270 mNetConfigs[networkType] == null) { 1271 return PhoneConstants.APN_REQUEST_FAILED; 1272 } 1273 1274 FeatureUser f = new FeatureUser(networkType, feature, binder); 1275 1276 // TODO - move this into individual networktrackers 1277 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1278 1279 if (mLockdownEnabled) { 1280 // Since carrier APNs usually aren't available from VPN 1281 // endpoint, mark them as unavailable. 1282 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1283 } 1284 1285 if (mProtectedNetworks.contains(usedNetworkType)) { 1286 enforceConnectivityInternalPermission(); 1287 } 1288 1289 // if UID is restricted, don't allow them to bring up metered APNs 1290 final boolean networkMetered = isNetworkMeteredUnchecked(usedNetworkType); 1291 final int uidRules; 1292 synchronized (mRulesLock) { 1293 uidRules = mUidRules.get(Binder.getCallingUid(), RULE_ALLOW_ALL); 1294 } 1295 if (networkMetered && (uidRules & RULE_REJECT_METERED) != 0) { 1296 return PhoneConstants.APN_REQUEST_FAILED; 1297 } 1298 1299 NetworkStateTracker network = mNetTrackers[usedNetworkType]; 1300 if (network != null) { 1301 Integer currentPid = new Integer(getCallingPid()); 1302 if (usedNetworkType != networkType) { 1303 NetworkInfo ni = network.getNetworkInfo(); 1304 1305 if (ni.isAvailable() == false) { 1306 if (!TextUtils.equals(feature,Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 1307 if (DBG) log("special network not available ni=" + ni.getTypeName()); 1308 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1309 } else { 1310 // else make the attempt anyway - probably giving REQUEST_STARTED below 1311 if (DBG) { 1312 log("special network not available, but try anyway ni=" + 1313 ni.getTypeName()); 1314 } 1315 } 1316 } 1317 1318 int restoreTimer = getRestoreDefaultNetworkDelay(usedNetworkType); 1319 1320 synchronized(this) { 1321 boolean addToList = true; 1322 if (restoreTimer < 0) { 1323 // In case there is no timer is specified for the feature, 1324 // make sure we don't add duplicate entry with the same request. 1325 for (FeatureUser u : mFeatureUsers) { 1326 if (u.isSameUser(f)) { 1327 // Duplicate user is found. Do not add. 1328 addToList = false; 1329 break; 1330 } 1331 } 1332 } 1333 1334 if (addToList) mFeatureUsers.add(f); 1335 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1336 // this gets used for per-pid dns when connected 1337 mNetRequestersPids[usedNetworkType].add(currentPid); 1338 } 1339 } 1340 1341 if (restoreTimer >= 0) { 1342 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1343 EVENT_RESTORE_DEFAULT_NETWORK, f), restoreTimer); 1344 } 1345 1346 if ((ni.isConnectedOrConnecting() == true) && 1347 !network.isTeardownRequested()) { 1348 if (ni.isConnected() == true) { 1349 final long token = Binder.clearCallingIdentity(); 1350 try { 1351 // add the pid-specific dns 1352 handleDnsConfigurationChange(usedNetworkType); 1353 if (VDBG) log("special network already active"); 1354 } finally { 1355 Binder.restoreCallingIdentity(token); 1356 } 1357 return PhoneConstants.APN_ALREADY_ACTIVE; 1358 } 1359 if (VDBG) log("special network already connecting"); 1360 return PhoneConstants.APN_REQUEST_STARTED; 1361 } 1362 1363 // check if the radio in play can make another contact 1364 // assume if cannot for now 1365 1366 if (DBG) { 1367 log("startUsingNetworkFeature reconnecting to " + networkType + ": " + 1368 feature); 1369 } 1370 if (network.reconnect()) { 1371 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_STARTED"); 1372 return PhoneConstants.APN_REQUEST_STARTED; 1373 } else { 1374 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_FAILED"); 1375 return PhoneConstants.APN_REQUEST_FAILED; 1376 } 1377 } else { 1378 // need to remember this unsupported request so we respond appropriately on stop 1379 synchronized(this) { 1380 mFeatureUsers.add(f); 1381 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1382 // this gets used for per-pid dns when connected 1383 mNetRequestersPids[usedNetworkType].add(currentPid); 1384 } 1385 } 1386 if (DBG) log("startUsingNetworkFeature X: return -1 unsupported feature."); 1387 return -1; 1388 } 1389 } 1390 if (DBG) log("startUsingNetworkFeature X: return APN_TYPE_NOT_AVAILABLE"); 1391 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1392 } finally { 1393 if (DBG) { 1394 final long execTime = SystemClock.elapsedRealtime() - startTime; 1395 if (execTime > 250) { 1396 loge("startUsingNetworkFeature took too long: " + execTime + "ms"); 1397 } else { 1398 if (VDBG) log("startUsingNetworkFeature took " + execTime + "ms"); 1399 } 1400 } 1401 } 1402 } 1403 1404 // javadoc from interface 1405 public int stopUsingNetworkFeature(int networkType, String feature) { 1406 enforceChangePermission(); 1407 1408 int pid = getCallingPid(); 1409 int uid = getCallingUid(); 1410 1411 FeatureUser u = null; 1412 boolean found = false; 1413 1414 synchronized(this) { 1415 for (FeatureUser x : mFeatureUsers) { 1416 if (x.isSameUser(pid, uid, networkType, feature)) { 1417 u = x; 1418 found = true; 1419 break; 1420 } 1421 } 1422 } 1423 if (found && u != null) { 1424 if (VDBG) log("stopUsingNetworkFeature: X"); 1425 // stop regardless of how many other time this proc had called start 1426 return stopUsingNetworkFeature(u, true); 1427 } else { 1428 // none found! 1429 if (VDBG) log("stopUsingNetworkFeature: X not a live request, ignoring"); 1430 return 1; 1431 } 1432 } 1433 1434 private int stopUsingNetworkFeature(FeatureUser u, boolean ignoreDups) { 1435 int networkType = u.mNetworkType; 1436 String feature = u.mFeature; 1437 int pid = u.mPid; 1438 int uid = u.mUid; 1439 1440 NetworkStateTracker tracker = null; 1441 boolean callTeardown = false; // used to carry our decision outside of sync block 1442 1443 if (VDBG) { 1444 log("stopUsingNetworkFeature: net " + networkType + ": " + feature); 1445 } 1446 1447 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1448 if (DBG) { 1449 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1450 ", net is invalid"); 1451 } 1452 return -1; 1453 } 1454 1455 // need to link the mFeatureUsers list with the mNetRequestersPids state in this 1456 // sync block 1457 synchronized(this) { 1458 // check if this process still has an outstanding start request 1459 if (!mFeatureUsers.contains(u)) { 1460 if (VDBG) { 1461 log("stopUsingNetworkFeature: this process has no outstanding requests" + 1462 ", ignoring"); 1463 } 1464 return 1; 1465 } 1466 u.unlinkDeathRecipient(); 1467 mFeatureUsers.remove(mFeatureUsers.indexOf(u)); 1468 // If we care about duplicate requests, check for that here. 1469 // 1470 // This is done to support the extension of a request - the app 1471 // can request we start the network feature again and renew the 1472 // auto-shutoff delay. Normal "stop" calls from the app though 1473 // do not pay attention to duplicate requests - in effect the 1474 // API does not refcount and a single stop will counter multiple starts. 1475 if (ignoreDups == false) { 1476 for (FeatureUser x : mFeatureUsers) { 1477 if (x.isSameUser(u)) { 1478 if (VDBG) log("stopUsingNetworkFeature: dup is found, ignoring"); 1479 return 1; 1480 } 1481 } 1482 } 1483 1484 // TODO - move to individual network trackers 1485 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1486 1487 tracker = mNetTrackers[usedNetworkType]; 1488 if (tracker == null) { 1489 if (DBG) { 1490 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1491 " no known tracker for used net type " + usedNetworkType); 1492 } 1493 return -1; 1494 } 1495 if (usedNetworkType != networkType) { 1496 Integer currentPid = new Integer(pid); 1497 mNetRequestersPids[usedNetworkType].remove(currentPid); 1498 1499 final long token = Binder.clearCallingIdentity(); 1500 try { 1501 reassessPidDns(pid, true); 1502 } finally { 1503 Binder.restoreCallingIdentity(token); 1504 } 1505 flushVmDnsCache(); 1506 if (mNetRequestersPids[usedNetworkType].size() != 0) { 1507 if (VDBG) { 1508 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1509 " others still using it"); 1510 } 1511 return 1; 1512 } 1513 callTeardown = true; 1514 } else { 1515 if (DBG) { 1516 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1517 " not a known feature - dropping"); 1518 } 1519 } 1520 } 1521 1522 if (callTeardown) { 1523 if (DBG) { 1524 log("stopUsingNetworkFeature: teardown net " + networkType + ": " + feature); 1525 } 1526 tracker.teardown(); 1527 return 1; 1528 } else { 1529 return -1; 1530 } 1531 } 1532 1533 /** 1534 * @deprecated use requestRouteToHostAddress instead 1535 * 1536 * Ensure that a network route exists to deliver traffic to the specified 1537 * host via the specified network interface. 1538 * @param networkType the type of the network over which traffic to the 1539 * specified host is to be routed 1540 * @param hostAddress the IP address of the host to which the route is 1541 * desired 1542 * @return {@code true} on success, {@code false} on failure 1543 */ 1544 public boolean requestRouteToHost(int networkType, int hostAddress, String packageName) { 1545 InetAddress inetAddress = NetworkUtils.intToInetAddress(hostAddress); 1546 1547 if (inetAddress == null) { 1548 return false; 1549 } 1550 1551 return requestRouteToHostAddress(networkType, inetAddress.getAddress(), packageName); 1552 } 1553 1554 /** 1555 * Ensure that a network route exists to deliver traffic to the specified 1556 * host via the specified network interface. 1557 * @param networkType the type of the network over which traffic to the 1558 * specified host is to be routed 1559 * @param hostAddress the IP address of the host to which the route is 1560 * desired 1561 * @return {@code true} on success, {@code false} on failure 1562 */ 1563 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress, 1564 String packageName) { 1565 enforceChangePermission(); 1566 if (mProtectedNetworks.contains(networkType)) { 1567 enforceConnectivityInternalPermission(); 1568 } 1569 1570 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1571 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1572 return false; 1573 } 1574 NetworkStateTracker tracker = mNetTrackers[networkType]; 1575 DetailedState netState = DetailedState.DISCONNECTED; 1576 if (tracker != null) { 1577 netState = tracker.getNetworkInfo().getDetailedState(); 1578 } 1579 1580 if ((netState != DetailedState.CONNECTED && 1581 netState != DetailedState.CAPTIVE_PORTAL_CHECK) || 1582 tracker.isTeardownRequested()) { 1583 if (VDBG) { 1584 log("requestRouteToHostAddress on down network " 1585 + "(" + networkType + ") - dropped" 1586 + " tracker=" + tracker 1587 + " netState=" + netState 1588 + " isTeardownRequested=" 1589 + ((tracker != null) ? tracker.isTeardownRequested() : "tracker:null")); 1590 } 1591 return false; 1592 } 1593 final long token = Binder.clearCallingIdentity(); 1594 try { 1595 InetAddress addr = InetAddress.getByAddress(hostAddress); 1596 LinkProperties lp = tracker.getLinkProperties(); 1597 boolean ok = addRouteToAddress(lp, addr, EXEMPT); 1598 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1599 return ok; 1600 } catch (UnknownHostException e) { 1601 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1602 } finally { 1603 Binder.restoreCallingIdentity(token); 1604 } 1605 if (DBG) log("requestRouteToHostAddress X bottom return false"); 1606 return false; 1607 } 1608 1609 private boolean addRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, 1610 boolean exempt) { 1611 return modifyRoute(p, r, 0, ADD, toDefaultTable, exempt); 1612 } 1613 1614 private boolean removeRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable) { 1615 return modifyRoute(p, r, 0, REMOVE, toDefaultTable, UNEXEMPT); 1616 } 1617 1618 private boolean addRouteToAddress(LinkProperties lp, InetAddress addr, boolean exempt) { 1619 return modifyRouteToAddress(lp, addr, ADD, TO_DEFAULT_TABLE, exempt); 1620 } 1621 1622 private boolean removeRouteToAddress(LinkProperties lp, InetAddress addr) { 1623 return modifyRouteToAddress(lp, addr, REMOVE, TO_DEFAULT_TABLE, UNEXEMPT); 1624 } 1625 1626 private boolean modifyRouteToAddress(LinkProperties lp, InetAddress addr, boolean doAdd, 1627 boolean toDefaultTable, boolean exempt) { 1628 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1629 if (bestRoute == null) { 1630 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1631 } else { 1632 String iface = bestRoute.getInterface(); 1633 if (bestRoute.getGateway().equals(addr)) { 1634 // if there is no better route, add the implied hostroute for our gateway 1635 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1636 } else { 1637 // if we will connect to this through another route, add a direct route 1638 // to it's gateway 1639 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1640 } 1641 } 1642 return modifyRoute(lp, bestRoute, 0, doAdd, toDefaultTable, exempt); 1643 } 1644 1645 private boolean modifyRoute(LinkProperties lp, RouteInfo r, int cycleCount, boolean doAdd, 1646 boolean toDefaultTable, boolean exempt) { 1647 if ((lp == null) || (r == null)) { 1648 if (DBG) log("modifyRoute got unexpected null: " + lp + ", " + r); 1649 return false; 1650 } 1651 1652 if (cycleCount > MAX_HOSTROUTE_CYCLE_COUNT) { 1653 loge("Error modifying route - too much recursion"); 1654 return false; 1655 } 1656 1657 String ifaceName = r.getInterface(); 1658 if(ifaceName == null) { 1659 loge("Error modifying route - no interface name"); 1660 return false; 1661 } 1662 if (r.hasGateway()) { 1663 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), r.getGateway()); 1664 if (bestRoute != null) { 1665 if (bestRoute.getGateway().equals(r.getGateway())) { 1666 // if there is no better route, add the implied hostroute for our gateway 1667 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), ifaceName); 1668 } else { 1669 // if we will connect to our gateway through another route, add a direct 1670 // route to it's gateway 1671 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), 1672 bestRoute.getGateway(), 1673 ifaceName); 1674 } 1675 modifyRoute(lp, bestRoute, cycleCount+1, doAdd, toDefaultTable, exempt); 1676 } 1677 } 1678 if (doAdd) { 1679 if (VDBG) log("Adding " + r + " for interface " + ifaceName); 1680 try { 1681 if (toDefaultTable) { 1682 synchronized (mRoutesLock) { 1683 // only track default table - only one apps can effect 1684 mAddedRoutes.add(r); 1685 mNetd.addRoute(ifaceName, r); 1686 if (exempt) { 1687 LinkAddress dest = r.getDestination(); 1688 if (!mExemptAddresses.contains(dest)) { 1689 mNetd.setHostExemption(dest); 1690 mExemptAddresses.add(dest); 1691 } 1692 } 1693 } 1694 } else { 1695 mNetd.addSecondaryRoute(ifaceName, r); 1696 } 1697 } catch (Exception e) { 1698 // never crash - catch them all 1699 if (DBG) loge("Exception trying to add a route: " + e); 1700 return false; 1701 } 1702 } else { 1703 // if we remove this one and there are no more like it, then refcount==0 and 1704 // we can remove it from the table 1705 if (toDefaultTable) { 1706 synchronized (mRoutesLock) { 1707 mAddedRoutes.remove(r); 1708 if (mAddedRoutes.contains(r) == false) { 1709 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1710 try { 1711 mNetd.removeRoute(ifaceName, r); 1712 LinkAddress dest = r.getDestination(); 1713 if (mExemptAddresses.contains(dest)) { 1714 mNetd.clearHostExemption(dest); 1715 mExemptAddresses.remove(dest); 1716 } 1717 } catch (Exception e) { 1718 // never crash - catch them all 1719 if (VDBG) loge("Exception trying to remove a route: " + e); 1720 return false; 1721 } 1722 } else { 1723 if (VDBG) log("not removing " + r + " as it's still in use"); 1724 } 1725 } 1726 } else { 1727 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1728 try { 1729 mNetd.removeSecondaryRoute(ifaceName, r); 1730 } catch (Exception e) { 1731 // never crash - catch them all 1732 if (VDBG) loge("Exception trying to remove a route: " + e); 1733 return false; 1734 } 1735 } 1736 } 1737 return true; 1738 } 1739 1740 /** 1741 * @see ConnectivityManager#getMobileDataEnabled() 1742 */ 1743 public boolean getMobileDataEnabled() { 1744 // TODO: This detail should probably be in DataConnectionTracker's 1745 // which is where we store the value and maybe make this 1746 // asynchronous. 1747 enforceAccessPermission(); 1748 boolean retVal = Settings.Global.getInt(mContext.getContentResolver(), 1749 Settings.Global.MOBILE_DATA, 1) == 1; 1750 if (VDBG) log("getMobileDataEnabled returning " + retVal); 1751 return retVal; 1752 } 1753 1754 public void setDataDependency(int networkType, boolean met) { 1755 enforceConnectivityInternalPermission(); 1756 1757 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1758 (met ? ENABLED : DISABLED), networkType)); 1759 } 1760 1761 private void handleSetDependencyMet(int networkType, boolean met) { 1762 if (mNetTrackers[networkType] != null) { 1763 if (DBG) { 1764 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1765 } 1766 mNetTrackers[networkType].setDependencyMet(met); 1767 } 1768 } 1769 1770 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1771 @Override 1772 public void onUidRulesChanged(int uid, int uidRules) { 1773 // caller is NPMS, since we only register with them 1774 if (LOGD_RULES) { 1775 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1776 } 1777 1778 synchronized (mRulesLock) { 1779 // skip update when we've already applied rules 1780 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1781 if (oldRules == uidRules) return; 1782 1783 mUidRules.put(uid, uidRules); 1784 } 1785 1786 // TODO: notify UID when it has requested targeted updates 1787 } 1788 1789 @Override 1790 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1791 // caller is NPMS, since we only register with them 1792 if (LOGD_RULES) { 1793 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1794 } 1795 1796 synchronized (mRulesLock) { 1797 mMeteredIfaces.clear(); 1798 for (String iface : meteredIfaces) { 1799 mMeteredIfaces.add(iface); 1800 } 1801 } 1802 } 1803 1804 @Override 1805 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1806 // caller is NPMS, since we only register with them 1807 if (LOGD_RULES) { 1808 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1809 } 1810 1811 // kick off connectivity change broadcast for active network, since 1812 // global background policy change is radical. 1813 final int networkType = mActiveDefaultNetwork; 1814 if (isNetworkTypeValid(networkType)) { 1815 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1816 if (tracker != null) { 1817 final NetworkInfo info = tracker.getNetworkInfo(); 1818 if (info != null && info.isConnected()) { 1819 sendConnectedBroadcast(info); 1820 } 1821 } 1822 } 1823 } 1824 }; 1825 1826 /** 1827 * @see ConnectivityManager#setMobileDataEnabled(boolean) 1828 */ 1829 public void setMobileDataEnabled(boolean enabled) { 1830 enforceChangePermission(); 1831 if (DBG) log("setMobileDataEnabled(" + enabled + ")"); 1832 1833 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_MOBILE_DATA, 1834 (enabled ? ENABLED : DISABLED), 0)); 1835 } 1836 1837 private void handleSetMobileData(boolean enabled) { 1838 if (mNetTrackers[ConnectivityManager.TYPE_MOBILE] != null) { 1839 if (VDBG) { 1840 log(mNetTrackers[ConnectivityManager.TYPE_MOBILE].toString() + enabled); 1841 } 1842 mNetTrackers[ConnectivityManager.TYPE_MOBILE].setUserDataEnable(enabled); 1843 } 1844 if (mNetTrackers[ConnectivityManager.TYPE_WIMAX] != null) { 1845 if (VDBG) { 1846 log(mNetTrackers[ConnectivityManager.TYPE_WIMAX].toString() + enabled); 1847 } 1848 mNetTrackers[ConnectivityManager.TYPE_WIMAX].setUserDataEnable(enabled); 1849 } 1850 } 1851 1852 @Override 1853 public void setPolicyDataEnable(int networkType, boolean enabled) { 1854 // only someone like NPMS should only be calling us 1855 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1856 1857 mHandler.sendMessage(mHandler.obtainMessage( 1858 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1859 } 1860 1861 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1862 if (isNetworkTypeValid(networkType)) { 1863 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1864 if (tracker != null) { 1865 tracker.setPolicyDataEnable(enabled); 1866 } 1867 } 1868 } 1869 1870 private void enforceAccessPermission() { 1871 mContext.enforceCallingOrSelfPermission( 1872 android.Manifest.permission.ACCESS_NETWORK_STATE, 1873 "ConnectivityService"); 1874 } 1875 1876 private void enforceChangePermission() { 1877 mContext.enforceCallingOrSelfPermission( 1878 android.Manifest.permission.CHANGE_NETWORK_STATE, 1879 "ConnectivityService"); 1880 } 1881 1882 // TODO Make this a special check when it goes public 1883 private void enforceTetherChangePermission() { 1884 mContext.enforceCallingOrSelfPermission( 1885 android.Manifest.permission.CHANGE_NETWORK_STATE, 1886 "ConnectivityService"); 1887 } 1888 1889 private void enforceTetherAccessPermission() { 1890 mContext.enforceCallingOrSelfPermission( 1891 android.Manifest.permission.ACCESS_NETWORK_STATE, 1892 "ConnectivityService"); 1893 } 1894 1895 private void enforceConnectivityInternalPermission() { 1896 mContext.enforceCallingOrSelfPermission( 1897 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1898 "ConnectivityService"); 1899 } 1900 1901 private void enforceMarkNetworkSocketPermission() { 1902 //Media server special case 1903 if (Binder.getCallingUid() == Process.MEDIA_UID) { 1904 return; 1905 } 1906 mContext.enforceCallingOrSelfPermission( 1907 android.Manifest.permission.MARK_NETWORK_SOCKET, 1908 "ConnectivityService"); 1909 } 1910 1911 /** 1912 * Handle a {@code DISCONNECTED} event. If this pertains to the non-active 1913 * network, we ignore it. If it is for the active network, we send out a 1914 * broadcast. But first, we check whether it might be possible to connect 1915 * to a different network. 1916 * @param info the {@code NetworkInfo} for the network 1917 */ 1918 private void handleDisconnect(NetworkInfo info) { 1919 1920 int prevNetType = info.getType(); 1921 1922 mNetTrackers[prevNetType].setTeardownRequested(false); 1923 1924 // Remove idletimer previously setup in {@code handleConnect} 1925 removeDataActivityTracking(prevNetType); 1926 1927 /* 1928 * If the disconnected network is not the active one, then don't report 1929 * this as a loss of connectivity. What probably happened is that we're 1930 * getting the disconnect for a network that we explicitly disabled 1931 * in accordance with network preference policies. 1932 */ 1933 if (!mNetConfigs[prevNetType].isDefault()) { 1934 List<Integer> pids = mNetRequestersPids[prevNetType]; 1935 for (Integer pid : pids) { 1936 // will remove them because the net's no longer connected 1937 // need to do this now as only now do we know the pids and 1938 // can properly null things that are no longer referenced. 1939 reassessPidDns(pid.intValue(), false); 1940 } 1941 } 1942 1943 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 1944 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1945 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1946 if (info.isFailover()) { 1947 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1948 info.setFailover(false); 1949 } 1950 if (info.getReason() != null) { 1951 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1952 } 1953 if (info.getExtraInfo() != null) { 1954 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1955 info.getExtraInfo()); 1956 } 1957 1958 if (mNetConfigs[prevNetType].isDefault()) { 1959 tryFailover(prevNetType); 1960 if (mActiveDefaultNetwork != -1) { 1961 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 1962 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 1963 } else { 1964 mDefaultInetConditionPublished = 0; // we're not connected anymore 1965 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 1966 } 1967 } 1968 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1969 1970 // Reset interface if no other connections are using the same interface 1971 boolean doReset = true; 1972 LinkProperties linkProperties = mNetTrackers[prevNetType].getLinkProperties(); 1973 if (linkProperties != null) { 1974 String oldIface = linkProperties.getInterfaceName(); 1975 if (TextUtils.isEmpty(oldIface) == false) { 1976 for (NetworkStateTracker networkStateTracker : mNetTrackers) { 1977 if (networkStateTracker == null) continue; 1978 NetworkInfo networkInfo = networkStateTracker.getNetworkInfo(); 1979 if (networkInfo.isConnected() && networkInfo.getType() != prevNetType) { 1980 LinkProperties l = networkStateTracker.getLinkProperties(); 1981 if (l == null) continue; 1982 if (oldIface.equals(l.getInterfaceName())) { 1983 doReset = false; 1984 break; 1985 } 1986 } 1987 } 1988 } 1989 } 1990 1991 // do this before we broadcast the change 1992 handleConnectivityChange(prevNetType, doReset); 1993 1994 final Intent immediateIntent = new Intent(intent); 1995 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 1996 sendStickyBroadcast(immediateIntent); 1997 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 1998 /* 1999 * If the failover network is already connected, then immediately send 2000 * out a followup broadcast indicating successful failover 2001 */ 2002 if (mActiveDefaultNetwork != -1) { 2003 sendConnectedBroadcastDelayed(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(), 2004 getConnectivityChangeDelay()); 2005 } 2006 } 2007 2008 private void tryFailover(int prevNetType) { 2009 /* 2010 * If this is a default network, check if other defaults are available. 2011 * Try to reconnect on all available and let them hash it out when 2012 * more than one connects. 2013 */ 2014 if (mNetConfigs[prevNetType].isDefault()) { 2015 if (mActiveDefaultNetwork == prevNetType) { 2016 if (DBG) { 2017 log("tryFailover: set mActiveDefaultNetwork=-1, prevNetType=" + prevNetType); 2018 } 2019 mActiveDefaultNetwork = -1; 2020 } 2021 2022 // don't signal a reconnect for anything lower or equal priority than our 2023 // current connected default 2024 // TODO - don't filter by priority now - nice optimization but risky 2025// int currentPriority = -1; 2026// if (mActiveDefaultNetwork != -1) { 2027// currentPriority = mNetConfigs[mActiveDefaultNetwork].mPriority; 2028// } 2029 2030 for (int checkType=0; checkType <= ConnectivityManager.MAX_NETWORK_TYPE; checkType++) { 2031 if (checkType == prevNetType) continue; 2032 if (mNetConfigs[checkType] == null) continue; 2033 if (!mNetConfigs[checkType].isDefault()) continue; 2034 if (mNetTrackers[checkType] == null) continue; 2035 2036// Enabling the isAvailable() optimization caused mobile to not get 2037// selected if it was in the middle of error handling. Specifically 2038// a moble connection that took 30 seconds to complete the DEACTIVATE_DATA_CALL 2039// would not be available and we wouldn't get connected to anything. 2040// So removing the isAvailable() optimization below for now. TODO: This 2041// optimization should work and we need to investigate why it doesn't work. 2042// This could be related to how DEACTIVATE_DATA_CALL is reporting its 2043// complete before it is really complete. 2044 2045// if (!mNetTrackers[checkType].isAvailable()) continue; 2046 2047// if (currentPriority >= mNetConfigs[checkType].mPriority) continue; 2048 2049 NetworkStateTracker checkTracker = mNetTrackers[checkType]; 2050 NetworkInfo checkInfo = checkTracker.getNetworkInfo(); 2051 if (!checkInfo.isConnectedOrConnecting() || checkTracker.isTeardownRequested()) { 2052 checkInfo.setFailover(true); 2053 checkTracker.reconnect(); 2054 } 2055 if (DBG) log("Attempting to switch to " + checkInfo.getTypeName()); 2056 } 2057 } 2058 } 2059 2060 public void sendConnectedBroadcast(NetworkInfo info) { 2061 enforceConnectivityInternalPermission(); 2062 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2063 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 2064 } 2065 2066 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 2067 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2068 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 2069 } 2070 2071 private void sendInetConditionBroadcast(NetworkInfo info) { 2072 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 2073 } 2074 2075 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 2076 if (mLockdownTracker != null) { 2077 info = mLockdownTracker.augmentNetworkInfo(info); 2078 } 2079 2080 Intent intent = new Intent(bcastType); 2081 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2082 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2083 if (info.isFailover()) { 2084 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2085 info.setFailover(false); 2086 } 2087 if (info.getReason() != null) { 2088 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2089 } 2090 if (info.getExtraInfo() != null) { 2091 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2092 info.getExtraInfo()); 2093 } 2094 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2095 return intent; 2096 } 2097 2098 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 2099 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 2100 } 2101 2102 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 2103 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 2104 } 2105 2106 private void sendDataActivityBroadcast(int deviceType, boolean active) { 2107 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 2108 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 2109 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 2110 final long ident = Binder.clearCallingIdentity(); 2111 try { 2112 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 2113 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 2114 } finally { 2115 Binder.restoreCallingIdentity(ident); 2116 } 2117 } 2118 2119 /** 2120 * Called when an attempt to fail over to another network has failed. 2121 * @param info the {@link NetworkInfo} for the failed network 2122 */ 2123 private void handleConnectionFailure(NetworkInfo info) { 2124 mNetTrackers[info.getType()].setTeardownRequested(false); 2125 2126 String reason = info.getReason(); 2127 String extraInfo = info.getExtraInfo(); 2128 2129 String reasonText; 2130 if (reason == null) { 2131 reasonText = "."; 2132 } else { 2133 reasonText = " (" + reason + ")."; 2134 } 2135 loge("Attempt to connect to " + info.getTypeName() + " failed" + reasonText); 2136 2137 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 2138 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2139 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2140 if (getActiveNetworkInfo() == null) { 2141 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2142 } 2143 if (reason != null) { 2144 intent.putExtra(ConnectivityManager.EXTRA_REASON, reason); 2145 } 2146 if (extraInfo != null) { 2147 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, extraInfo); 2148 } 2149 if (info.isFailover()) { 2150 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2151 info.setFailover(false); 2152 } 2153 2154 if (mNetConfigs[info.getType()].isDefault()) { 2155 tryFailover(info.getType()); 2156 if (mActiveDefaultNetwork != -1) { 2157 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2158 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 2159 } else { 2160 mDefaultInetConditionPublished = 0; 2161 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2162 } 2163 } 2164 2165 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2166 2167 final Intent immediateIntent = new Intent(intent); 2168 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 2169 sendStickyBroadcast(immediateIntent); 2170 sendStickyBroadcast(intent); 2171 /* 2172 * If the failover network is already connected, then immediately send 2173 * out a followup broadcast indicating successful failover 2174 */ 2175 if (mActiveDefaultNetwork != -1) { 2176 sendConnectedBroadcast(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo()); 2177 } 2178 } 2179 2180 private void sendStickyBroadcast(Intent intent) { 2181 synchronized(this) { 2182 if (!mSystemReady) { 2183 mInitialBroadcast = new Intent(intent); 2184 } 2185 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2186 if (VDBG) { 2187 log("sendStickyBroadcast: action=" + intent.getAction()); 2188 } 2189 2190 final long ident = Binder.clearCallingIdentity(); 2191 try { 2192 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2193 } finally { 2194 Binder.restoreCallingIdentity(ident); 2195 } 2196 } 2197 } 2198 2199 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 2200 if (delayMs <= 0) { 2201 sendStickyBroadcast(intent); 2202 } else { 2203 if (VDBG) { 2204 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 2205 + intent.getAction()); 2206 } 2207 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2208 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 2209 } 2210 } 2211 2212 void systemReady() { 2213 mCaptivePortalTracker = CaptivePortalTracker.makeCaptivePortalTracker(mContext, this); 2214 loadGlobalProxy(); 2215 2216 synchronized(this) { 2217 mSystemReady = true; 2218 if (mInitialBroadcast != null) { 2219 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 2220 mInitialBroadcast = null; 2221 } 2222 } 2223 // load the global proxy at startup 2224 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 2225 2226 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 2227 // for user to unlock device. 2228 if (!updateLockdownVpn()) { 2229 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 2230 mContext.registerReceiver(mUserPresentReceiver, filter); 2231 } 2232 } 2233 2234 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 2235 @Override 2236 public void onReceive(Context context, Intent intent) { 2237 // Try creating lockdown tracker, since user present usually means 2238 // unlocked keystore. 2239 if (updateLockdownVpn()) { 2240 mContext.unregisterReceiver(this); 2241 } 2242 } 2243 }; 2244 2245 private boolean isNewNetTypePreferredOverCurrentNetType(int type) { 2246 if (((type != mNetworkPreference) 2247 && (mNetConfigs[mActiveDefaultNetwork].priority > mNetConfigs[type].priority)) 2248 || (mNetworkPreference == mActiveDefaultNetwork)) { 2249 return false; 2250 } 2251 return true; 2252 } 2253 2254 private void handleConnect(NetworkInfo info) { 2255 final int newNetType = info.getType(); 2256 2257 setupDataActivityTracking(newNetType); 2258 2259 // snapshot isFailover, because sendConnectedBroadcast() resets it 2260 boolean isFailover = info.isFailover(); 2261 final NetworkStateTracker thisNet = mNetTrackers[newNetType]; 2262 final String thisIface = thisNet.getLinkProperties().getInterfaceName(); 2263 2264 if (VDBG) { 2265 log("handleConnect: E newNetType=" + newNetType + " thisIface=" + thisIface 2266 + " isFailover" + isFailover); 2267 } 2268 2269 // if this is a default net and other default is running 2270 // kill the one not preferred 2271 if (mNetConfigs[newNetType].isDefault()) { 2272 if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != newNetType) { 2273 if (isNewNetTypePreferredOverCurrentNetType(newNetType)) { 2274 // tear down the other 2275 NetworkStateTracker otherNet = 2276 mNetTrackers[mActiveDefaultNetwork]; 2277 if (DBG) { 2278 log("Policy requires " + otherNet.getNetworkInfo().getTypeName() + 2279 " teardown"); 2280 } 2281 if (!teardown(otherNet)) { 2282 loge("Network declined teardown request"); 2283 teardown(thisNet); 2284 return; 2285 } 2286 } else { 2287 // don't accept this one 2288 if (VDBG) { 2289 log("Not broadcasting CONNECT_ACTION " + 2290 "to torn down network " + info.getTypeName()); 2291 } 2292 teardown(thisNet); 2293 return; 2294 } 2295 } 2296 synchronized (ConnectivityService.this) { 2297 // have a new default network, release the transition wakelock in a second 2298 // if it's held. The second pause is to allow apps to reconnect over the 2299 // new network 2300 if (mNetTransitionWakeLock.isHeld()) { 2301 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2302 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 2303 mNetTransitionWakeLockSerialNumber, 0), 2304 1000); 2305 } 2306 } 2307 mActiveDefaultNetwork = newNetType; 2308 // this will cause us to come up initially as unconnected and switching 2309 // to connected after our normal pause unless somebody reports us as reall 2310 // disconnected 2311 mDefaultInetConditionPublished = 0; 2312 mDefaultConnectionSequence++; 2313 mInetConditionChangeInFlight = false; 2314 // Don't do this - if we never sign in stay, grey 2315 //reportNetworkCondition(mActiveDefaultNetwork, 100); 2316 updateNetworkSettings(thisNet); 2317 } 2318 thisNet.setTeardownRequested(false); 2319 updateMtuSizeSettings(thisNet); 2320 handleConnectivityChange(newNetType, false); 2321 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 2322 2323 // notify battery stats service about this network 2324 if (thisIface != null) { 2325 try { 2326 BatteryStatsService.getService().noteNetworkInterfaceType(thisIface, newNetType); 2327 } catch (RemoteException e) { 2328 // ignored; service lives in system_server 2329 } 2330 } 2331 } 2332 2333 private void handleCaptivePortalTrackerCheck(NetworkInfo info) { 2334 if (DBG) log("Captive portal check " + info); 2335 int type = info.getType(); 2336 final NetworkStateTracker thisNet = mNetTrackers[type]; 2337 if (mNetConfigs[type].isDefault()) { 2338 if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != type) { 2339 if (isNewNetTypePreferredOverCurrentNetType(type)) { 2340 if (DBG) log("Captive check on " + info.getTypeName()); 2341 mCaptivePortalTracker.detectCaptivePortal(new NetworkInfo(info)); 2342 return; 2343 } else { 2344 if (DBG) log("Tear down low priority net " + info.getTypeName()); 2345 teardown(thisNet); 2346 return; 2347 } 2348 } 2349 } 2350 2351 if (DBG) log("handleCaptivePortalTrackerCheck: call captivePortalCheckComplete ni=" + info); 2352 thisNet.captivePortalCheckComplete(); 2353 } 2354 2355 /** @hide */ 2356 @Override 2357 public void captivePortalCheckComplete(NetworkInfo info) { 2358 enforceConnectivityInternalPermission(); 2359 if (DBG) log("captivePortalCheckComplete: ni=" + info); 2360 mNetTrackers[info.getType()].captivePortalCheckComplete(); 2361 } 2362 2363 /** @hide */ 2364 @Override 2365 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 2366 enforceConnectivityInternalPermission(); 2367 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 2368 mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 2369 } 2370 2371 /** 2372 * Setup data activity tracking for the given network interface. 2373 * 2374 * Every {@code setupDataActivityTracking} should be paired with a 2375 * {@link removeDataActivityTracking} for cleanup. 2376 */ 2377 private void setupDataActivityTracking(int type) { 2378 final NetworkStateTracker thisNet = mNetTrackers[type]; 2379 final String iface = thisNet.getLinkProperties().getInterfaceName(); 2380 2381 final int timeout; 2382 2383 if (ConnectivityManager.isNetworkTypeMobile(type)) { 2384 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2385 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 2386 0); 2387 // Canonicalize mobile network type 2388 type = ConnectivityManager.TYPE_MOBILE; 2389 } else if (ConnectivityManager.TYPE_WIFI == type) { 2390 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2391 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 2392 0); 2393 } else { 2394 // do not track any other networks 2395 timeout = 0; 2396 } 2397 2398 if (timeout > 0 && iface != null) { 2399 try { 2400 mNetd.addIdleTimer(iface, timeout, Integer.toString(type)); 2401 } catch (RemoteException e) { 2402 } 2403 } 2404 } 2405 2406 /** 2407 * Remove data activity tracking when network disconnects. 2408 */ 2409 private void removeDataActivityTracking(int type) { 2410 final NetworkStateTracker net = mNetTrackers[type]; 2411 final String iface = net.getLinkProperties().getInterfaceName(); 2412 2413 if (iface != null && (ConnectivityManager.isNetworkTypeMobile(type) || 2414 ConnectivityManager.TYPE_WIFI == type)) { 2415 try { 2416 // the call fails silently if no idletimer setup for this interface 2417 mNetd.removeIdleTimer(iface); 2418 } catch (RemoteException e) { 2419 } 2420 } 2421 } 2422 2423 /** 2424 * After a change in the connectivity state of a network. We're mainly 2425 * concerned with making sure that the list of DNS servers is set up 2426 * according to which networks are connected, and ensuring that the 2427 * right routing table entries exist. 2428 */ 2429 private void handleConnectivityChange(int netType, boolean doReset) { 2430 int resetMask = doReset ? NetworkUtils.RESET_ALL_ADDRESSES : 0; 2431 boolean exempt = ConnectivityManager.isNetworkTypeExempt(netType); 2432 if (VDBG) { 2433 log("handleConnectivityChange: netType=" + netType + " doReset=" + doReset 2434 + " resetMask=" + resetMask); 2435 } 2436 2437 /* 2438 * If a non-default network is enabled, add the host routes that 2439 * will allow it's DNS servers to be accessed. 2440 */ 2441 handleDnsConfigurationChange(netType); 2442 2443 LinkProperties curLp = mCurrentLinkProperties[netType]; 2444 LinkProperties newLp = null; 2445 2446 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2447 newLp = mNetTrackers[netType].getLinkProperties(); 2448 if (VDBG) { 2449 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2450 " doReset=" + doReset + " resetMask=" + resetMask + 2451 "\n curLp=" + curLp + 2452 "\n newLp=" + newLp); 2453 } 2454 2455 if (curLp != null) { 2456 if (curLp.isIdenticalInterfaceName(newLp)) { 2457 CompareResult<LinkAddress> car = curLp.compareAddresses(newLp); 2458 if ((car.removed.size() != 0) || (car.added.size() != 0)) { 2459 for (LinkAddress linkAddr : car.removed) { 2460 if (linkAddr.getAddress() instanceof Inet4Address) { 2461 resetMask |= NetworkUtils.RESET_IPV4_ADDRESSES; 2462 } 2463 if (linkAddr.getAddress() instanceof Inet6Address) { 2464 resetMask |= NetworkUtils.RESET_IPV6_ADDRESSES; 2465 } 2466 } 2467 if (DBG) { 2468 log("handleConnectivityChange: addresses changed" + 2469 " linkProperty[" + netType + "]:" + " resetMask=" + resetMask + 2470 "\n car=" + car); 2471 } 2472 } else { 2473 if (DBG) { 2474 log("handleConnectivityChange: address are the same reset per doReset" + 2475 " linkProperty[" + netType + "]:" + 2476 " resetMask=" + resetMask); 2477 } 2478 } 2479 } else { 2480 resetMask = NetworkUtils.RESET_ALL_ADDRESSES; 2481 if (DBG) { 2482 log("handleConnectivityChange: interface not not equivalent reset both" + 2483 " linkProperty[" + netType + "]:" + 2484 " resetMask=" + resetMask); 2485 } 2486 } 2487 } 2488 if (mNetConfigs[netType].isDefault()) { 2489 handleApplyDefaultProxy(newLp.getHttpProxy()); 2490 } 2491 } else { 2492 if (VDBG) { 2493 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2494 " doReset=" + doReset + " resetMask=" + resetMask + 2495 "\n curLp=" + curLp + 2496 "\n newLp= null"); 2497 } 2498 } 2499 mCurrentLinkProperties[netType] = newLp; 2500 boolean resetDns = updateRoutes(newLp, curLp, mNetConfigs[netType].isDefault(), exempt); 2501 2502 if (resetMask != 0 || resetDns) { 2503 if (VDBG) log("handleConnectivityChange: resetting"); 2504 if (curLp != null) { 2505 if (VDBG) log("handleConnectivityChange: resetting curLp=" + curLp); 2506 for (String iface : curLp.getAllInterfaceNames()) { 2507 if (TextUtils.isEmpty(iface) == false) { 2508 if (resetMask != 0) { 2509 if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")"); 2510 NetworkUtils.resetConnections(iface, resetMask); 2511 2512 // Tell VPN the interface is down. It is a temporary 2513 // but effective fix to make VPN aware of the change. 2514 if ((resetMask & NetworkUtils.RESET_IPV4_ADDRESSES) != 0) { 2515 synchronized(mVpns) { 2516 for (int i = 0; i < mVpns.size(); i++) { 2517 mVpns.valueAt(i).interfaceStatusChanged(iface, false); 2518 } 2519 } 2520 } 2521 } 2522 if (resetDns) { 2523 flushVmDnsCache(); 2524 if (VDBG) log("resetting DNS cache for " + iface); 2525 try { 2526 mNetd.flushInterfaceDnsCache(iface); 2527 } catch (Exception e) { 2528 // never crash - catch them all 2529 if (DBG) loge("Exception resetting dns cache: " + e); 2530 } 2531 } 2532 } else { 2533 loge("Can't reset connection for type "+netType); 2534 } 2535 } 2536 } 2537 } 2538 2539 // Update 464xlat state. 2540 NetworkStateTracker tracker = mNetTrackers[netType]; 2541 if (mClat.requiresClat(netType, tracker)) { 2542 2543 // If the connection was previously using clat, but is not using it now, stop the clat 2544 // daemon. Normally, this happens automatically when the connection disconnects, but if 2545 // the disconnect is not reported, or if the connection's LinkProperties changed for 2546 // some other reason (e.g., handoff changes the IP addresses on the link), it would 2547 // still be running. If it's not running, then stopping it is a no-op. 2548 if (Nat464Xlat.isRunningClat(curLp) && !Nat464Xlat.isRunningClat(newLp)) { 2549 mClat.stopClat(); 2550 } 2551 // If the link requires clat to be running, then start the daemon now. 2552 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2553 mClat.startClat(tracker); 2554 } else { 2555 mClat.stopClat(); 2556 } 2557 } 2558 2559 // TODO: Temporary notifying upstread change to Tethering. 2560 // @see bug/4455071 2561 /** Notify TetheringService if interface name has been changed. */ 2562 if (TextUtils.equals(mNetTrackers[netType].getNetworkInfo().getReason(), 2563 PhoneConstants.REASON_LINK_PROPERTIES_CHANGED)) { 2564 if (isTetheringSupported()) { 2565 mTethering.handleTetherIfaceChange(); 2566 } 2567 } 2568 } 2569 2570 /** 2571 * Add and remove routes using the old properties (null if not previously connected), 2572 * new properties (null if becoming disconnected). May even be double null, which 2573 * is a noop. 2574 * Uses isLinkDefault to determine if default routes should be set or conversely if 2575 * host routes should be set to the dns servers 2576 * returns a boolean indicating the routes changed 2577 */ 2578 private boolean updateRoutes(LinkProperties newLp, LinkProperties curLp, 2579 boolean isLinkDefault, boolean exempt) { 2580 Collection<RouteInfo> routesToAdd = null; 2581 CompareResult<InetAddress> dnsDiff = new CompareResult<InetAddress>(); 2582 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 2583 if (curLp != null) { 2584 // check for the delta between the current set and the new 2585 routeDiff = curLp.compareAllRoutes(newLp); 2586 dnsDiff = curLp.compareDnses(newLp); 2587 } else if (newLp != null) { 2588 routeDiff.added = newLp.getAllRoutes(); 2589 dnsDiff.added = newLp.getDnses(); 2590 } 2591 2592 boolean routesChanged = (routeDiff.removed.size() != 0 || routeDiff.added.size() != 0); 2593 2594 for (RouteInfo r : routeDiff.removed) { 2595 if (isLinkDefault || ! r.isDefaultRoute()) { 2596 if (VDBG) log("updateRoutes: default remove route r=" + r); 2597 removeRoute(curLp, r, TO_DEFAULT_TABLE); 2598 } 2599 if (isLinkDefault == false) { 2600 // remove from a secondary route table 2601 removeRoute(curLp, r, TO_SECONDARY_TABLE); 2602 } 2603 } 2604 2605 if (!isLinkDefault) { 2606 // handle DNS routes 2607 if (routesChanged) { 2608 // routes changed - remove all old dns entries and add new 2609 if (curLp != null) { 2610 for (InetAddress oldDns : curLp.getDnses()) { 2611 removeRouteToAddress(curLp, oldDns); 2612 } 2613 } 2614 if (newLp != null) { 2615 for (InetAddress newDns : newLp.getDnses()) { 2616 addRouteToAddress(newLp, newDns, exempt); 2617 } 2618 } 2619 } else { 2620 // no change in routes, check for change in dns themselves 2621 for (InetAddress oldDns : dnsDiff.removed) { 2622 removeRouteToAddress(curLp, oldDns); 2623 } 2624 for (InetAddress newDns : dnsDiff.added) { 2625 addRouteToAddress(newLp, newDns, exempt); 2626 } 2627 } 2628 } 2629 2630 for (RouteInfo r : routeDiff.added) { 2631 if (isLinkDefault || ! r.isDefaultRoute()) { 2632 addRoute(newLp, r, TO_DEFAULT_TABLE, exempt); 2633 } else { 2634 // add to a secondary route table 2635 addRoute(newLp, r, TO_SECONDARY_TABLE, UNEXEMPT); 2636 2637 // many radios add a default route even when we don't want one. 2638 // remove the default route unless somebody else has asked for it 2639 String ifaceName = newLp.getInterfaceName(); 2640 synchronized (mRoutesLock) { 2641 if (!TextUtils.isEmpty(ifaceName) && !mAddedRoutes.contains(r)) { 2642 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 2643 try { 2644 mNetd.removeRoute(ifaceName, r); 2645 } catch (Exception e) { 2646 // never crash - catch them all 2647 if (DBG) loge("Exception trying to remove a route: " + e); 2648 } 2649 } 2650 } 2651 } 2652 } 2653 2654 return routesChanged; 2655 } 2656 2657 /** 2658 * Reads the network specific MTU size from reources. 2659 * and set it on it's iface. 2660 */ 2661 private void updateMtuSizeSettings(NetworkStateTracker nt) { 2662 final String iface = nt.getLinkProperties().getInterfaceName(); 2663 final int mtu = nt.getLinkProperties().getMtu(); 2664 2665 if (mtu < 68 || mtu > 10000) { 2666 loge("Unexpected mtu value: " + nt); 2667 return; 2668 } 2669 2670 try { 2671 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 2672 mNetd.setMtu(iface, mtu); 2673 } catch (Exception e) { 2674 Slog.e(TAG, "exception in setMtu()" + e); 2675 } 2676 } 2677 2678 /** 2679 * Reads the network specific TCP buffer sizes from SystemProperties 2680 * net.tcp.buffersize.[default|wifi|umts|edge|gprs] and set them for system 2681 * wide use 2682 */ 2683 private void updateNetworkSettings(NetworkStateTracker nt) { 2684 String key = nt.getTcpBufferSizesPropName(); 2685 String bufferSizes = key == null ? null : SystemProperties.get(key); 2686 2687 if (TextUtils.isEmpty(bufferSizes)) { 2688 if (VDBG) log(key + " not found in system properties. Using defaults"); 2689 2690 // Setting to default values so we won't be stuck to previous values 2691 key = "net.tcp.buffersize.default"; 2692 bufferSizes = SystemProperties.get(key); 2693 } 2694 2695 // Set values in kernel 2696 if (bufferSizes.length() != 0) { 2697 if (VDBG) { 2698 log("Setting TCP values: [" + bufferSizes 2699 + "] which comes from [" + key + "]"); 2700 } 2701 setBufferSize(bufferSizes); 2702 } 2703 } 2704 2705 /** 2706 * Writes TCP buffer sizes to /sys/kernel/ipv4/tcp_[r/w]mem_[min/def/max] 2707 * which maps to /proc/sys/net/ipv4/tcp_rmem and tcpwmem 2708 * 2709 * @param bufferSizes in the format of "readMin, readInitial, readMax, 2710 * writeMin, writeInitial, writeMax" 2711 */ 2712 private void setBufferSize(String bufferSizes) { 2713 try { 2714 String[] values = bufferSizes.split(","); 2715 2716 if (values.length == 6) { 2717 final String prefix = "/sys/kernel/ipv4/tcp_"; 2718 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 2719 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 2720 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 2721 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 2722 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 2723 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 2724 } else { 2725 loge("Invalid buffersize string: " + bufferSizes); 2726 } 2727 } catch (IOException e) { 2728 loge("Can't set tcp buffer sizes:" + e); 2729 } 2730 } 2731 2732 /** 2733 * Adjust the per-process dns entries (net.dns<x>.<pid>) based 2734 * on the highest priority active net which this process requested. 2735 * If there aren't any, clear it out 2736 */ 2737 private void reassessPidDns(int pid, boolean doBump) 2738 { 2739 if (VDBG) log("reassessPidDns for pid " + pid); 2740 Integer myPid = new Integer(pid); 2741 for(int i : mPriorityList) { 2742 if (mNetConfigs[i].isDefault()) { 2743 continue; 2744 } 2745 NetworkStateTracker nt = mNetTrackers[i]; 2746 if (nt.getNetworkInfo().isConnected() && 2747 !nt.isTeardownRequested()) { 2748 LinkProperties p = nt.getLinkProperties(); 2749 if (p == null) continue; 2750 if (mNetRequestersPids[i].contains(myPid)) { 2751 try { 2752 mNetd.setDnsInterfaceForPid(p.getInterfaceName(), pid); 2753 } catch (Exception e) { 2754 Slog.e(TAG, "exception reasseses pid dns: " + e); 2755 } 2756 return; 2757 } 2758 } 2759 } 2760 // nothing found - delete 2761 try { 2762 mNetd.clearDnsInterfaceForPid(pid); 2763 } catch (Exception e) { 2764 Slog.e(TAG, "exception clear interface from pid: " + e); 2765 } 2766 } 2767 2768 private void flushVmDnsCache() { 2769 /* 2770 * Tell the VMs to toss their DNS caches 2771 */ 2772 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 2773 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 2774 /* 2775 * Connectivity events can happen before boot has completed ... 2776 */ 2777 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2778 final long ident = Binder.clearCallingIdentity(); 2779 try { 2780 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 2781 } finally { 2782 Binder.restoreCallingIdentity(ident); 2783 } 2784 } 2785 2786 // Caller must grab mDnsLock. 2787 private void updateDnsLocked(String network, String iface, 2788 Collection<InetAddress> dnses, String domains, boolean defaultDns) { 2789 int last = 0; 2790 if (dnses.size() == 0 && mDefaultDns != null) { 2791 dnses = new ArrayList(); 2792 dnses.add(mDefaultDns); 2793 if (DBG) { 2794 loge("no dns provided for " + network + " - using " + mDefaultDns.getHostAddress()); 2795 } 2796 } 2797 2798 try { 2799 mNetd.setDnsServersForInterface(iface, NetworkUtils.makeStrings(dnses), domains); 2800 if (defaultDns) { 2801 mNetd.setDefaultInterfaceForDns(iface); 2802 } 2803 2804 for (InetAddress dns : dnses) { 2805 ++last; 2806 String key = "net.dns" + last; 2807 String value = dns.getHostAddress(); 2808 SystemProperties.set(key, value); 2809 } 2810 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 2811 String key = "net.dns" + i; 2812 SystemProperties.set(key, ""); 2813 } 2814 mNumDnsEntries = last; 2815 } catch (Exception e) { 2816 loge("exception setting default dns interface: " + e); 2817 } 2818 } 2819 2820 private void handleDnsConfigurationChange(int netType) { 2821 // add default net's dns entries 2822 NetworkStateTracker nt = mNetTrackers[netType]; 2823 if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) { 2824 LinkProperties p = nt.getLinkProperties(); 2825 if (p == null) return; 2826 Collection<InetAddress> dnses = p.getDnses(); 2827 if (mNetConfigs[netType].isDefault()) { 2828 String network = nt.getNetworkInfo().getTypeName(); 2829 synchronized (mDnsLock) { 2830 updateDnsLocked(network, p.getInterfaceName(), dnses, p.getDomains(), true); 2831 } 2832 } else { 2833 try { 2834 mNetd.setDnsServersForInterface(p.getInterfaceName(), 2835 NetworkUtils.makeStrings(dnses), p.getDomains()); 2836 } catch (Exception e) { 2837 if (DBG) loge("exception setting dns servers: " + e); 2838 } 2839 // set per-pid dns for attached secondary nets 2840 List<Integer> pids = mNetRequestersPids[netType]; 2841 for (Integer pid : pids) { 2842 try { 2843 mNetd.setDnsInterfaceForPid(p.getInterfaceName(), pid); 2844 } catch (Exception e) { 2845 Slog.e(TAG, "exception setting interface for pid: " + e); 2846 } 2847 } 2848 } 2849 flushVmDnsCache(); 2850 } 2851 } 2852 2853 private int getRestoreDefaultNetworkDelay(int networkType) { 2854 String restoreDefaultNetworkDelayStr = SystemProperties.get( 2855 NETWORK_RESTORE_DELAY_PROP_NAME); 2856 if(restoreDefaultNetworkDelayStr != null && 2857 restoreDefaultNetworkDelayStr.length() != 0) { 2858 try { 2859 return Integer.valueOf(restoreDefaultNetworkDelayStr); 2860 } catch (NumberFormatException e) { 2861 } 2862 } 2863 // if the system property isn't set, use the value for the apn type 2864 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 2865 2866 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 2867 (mNetConfigs[networkType] != null)) { 2868 ret = mNetConfigs[networkType].restoreTime; 2869 } 2870 return ret; 2871 } 2872 2873 @Override 2874 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 2875 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 2876 if (mContext.checkCallingOrSelfPermission( 2877 android.Manifest.permission.DUMP) 2878 != PackageManager.PERMISSION_GRANTED) { 2879 pw.println("Permission Denial: can't dump ConnectivityService " + 2880 "from from pid=" + Binder.getCallingPid() + ", uid=" + 2881 Binder.getCallingUid()); 2882 return; 2883 } 2884 2885 // TODO: add locking to get atomic snapshot 2886 pw.println(); 2887 for (int i = 0; i < mNetTrackers.length; i++) { 2888 final NetworkStateTracker nst = mNetTrackers[i]; 2889 if (nst != null) { 2890 pw.println("NetworkStateTracker for " + getNetworkTypeName(i) + ":"); 2891 pw.increaseIndent(); 2892 if (nst.getNetworkInfo().isConnected()) { 2893 pw.println("Active network: " + nst.getNetworkInfo(). 2894 getTypeName()); 2895 } 2896 pw.println(nst.getNetworkInfo()); 2897 pw.println(nst.getLinkProperties()); 2898 pw.println(nst); 2899 pw.println(); 2900 pw.decreaseIndent(); 2901 } 2902 } 2903 2904 pw.println("Network Requester Pids:"); 2905 pw.increaseIndent(); 2906 for (int net : mPriorityList) { 2907 String pidString = net + ": "; 2908 for (Integer pid : mNetRequestersPids[net]) { 2909 pidString = pidString + pid.toString() + ", "; 2910 } 2911 pw.println(pidString); 2912 } 2913 pw.println(); 2914 pw.decreaseIndent(); 2915 2916 pw.println("FeatureUsers:"); 2917 pw.increaseIndent(); 2918 for (Object requester : mFeatureUsers) { 2919 pw.println(requester.toString()); 2920 } 2921 pw.println(); 2922 pw.decreaseIndent(); 2923 2924 synchronized (this) { 2925 pw.println("NetworkTranstionWakeLock is currently " + 2926 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 2927 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 2928 } 2929 pw.println(); 2930 2931 mTethering.dump(fd, pw, args); 2932 2933 if (mInetLog != null) { 2934 pw.println(); 2935 pw.println("Inet condition reports:"); 2936 pw.increaseIndent(); 2937 for(int i = 0; i < mInetLog.size(); i++) { 2938 pw.println(mInetLog.get(i)); 2939 } 2940 pw.decreaseIndent(); 2941 } 2942 } 2943 2944 // must be stateless - things change under us. 2945 private class NetworkStateTrackerHandler extends Handler { 2946 public NetworkStateTrackerHandler(Looper looper) { 2947 super(looper); 2948 } 2949 2950 @Override 2951 public void handleMessage(Message msg) { 2952 NetworkInfo info; 2953 switch (msg.what) { 2954 case NetworkStateTracker.EVENT_STATE_CHANGED: { 2955 info = (NetworkInfo) msg.obj; 2956 NetworkInfo.State state = info.getState(); 2957 2958 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 2959 (state == NetworkInfo.State.DISCONNECTED) || 2960 (state == NetworkInfo.State.SUSPENDED)) { 2961 log("ConnectivityChange for " + 2962 info.getTypeName() + ": " + 2963 state + "/" + info.getDetailedState()); 2964 } 2965 2966 // Since mobile has the notion of a network/apn that can be used for 2967 // provisioning we need to check every time we're connected as 2968 // CaptiveProtalTracker won't detected it because DCT doesn't report it 2969 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 2970 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 2971 // is received by MDST and sent here as EVENT_STATE_CHANGED. 2972 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 2973 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 2974 Settings.Global.DEVICE_PROVISIONED, 0)) 2975 && (((state == NetworkInfo.State.CONNECTED) 2976 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 2977 || info.isConnectedToProvisioningNetwork())) { 2978 log("ConnectivityChange checkMobileProvisioning for" 2979 + " TYPE_MOBILE or ProvisioningNetwork"); 2980 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 2981 } 2982 2983 EventLogTags.writeConnectivityStateChanged( 2984 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 2985 2986 if (info.getDetailedState() == 2987 NetworkInfo.DetailedState.FAILED) { 2988 handleConnectionFailure(info); 2989 } else if (info.getDetailedState() == 2990 DetailedState.CAPTIVE_PORTAL_CHECK) { 2991 handleCaptivePortalTrackerCheck(info); 2992 } else if (info.isConnectedToProvisioningNetwork()) { 2993 /** 2994 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 2995 * for now its an in between network, its a network that 2996 * is actually a default network but we don't want it to be 2997 * announced as such to keep background applications from 2998 * trying to use it. It turns out that some still try so we 2999 * take the additional step of clearing any default routes 3000 * to the link that may have incorrectly setup by the lower 3001 * levels. 3002 */ 3003 LinkProperties lp = getLinkProperties(info.getType()); 3004 if (DBG) { 3005 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 3006 } 3007 3008 // Clear any default routes setup by the radio so 3009 // any activity by applications trying to use this 3010 // connection will fail until the provisioning network 3011 // is enabled. 3012 for (RouteInfo r : lp.getRoutes()) { 3013 removeRoute(lp, r, TO_DEFAULT_TABLE); 3014 } 3015 } else if (state == NetworkInfo.State.DISCONNECTED) { 3016 handleDisconnect(info); 3017 } else if (state == NetworkInfo.State.SUSPENDED) { 3018 // TODO: need to think this over. 3019 // the logic here is, handle SUSPENDED the same as 3020 // DISCONNECTED. The only difference being we are 3021 // broadcasting an intent with NetworkInfo that's 3022 // suspended. This allows the applications an 3023 // opportunity to handle DISCONNECTED and SUSPENDED 3024 // differently, or not. 3025 handleDisconnect(info); 3026 } else if (state == NetworkInfo.State.CONNECTED) { 3027 handleConnect(info); 3028 } 3029 if (mLockdownTracker != null) { 3030 mLockdownTracker.onNetworkInfoChanged(info); 3031 } 3032 break; 3033 } 3034 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 3035 info = (NetworkInfo) msg.obj; 3036 // TODO: Temporary allowing network configuration 3037 // change not resetting sockets. 3038 // @see bug/4455071 3039 handleConnectivityChange(info.getType(), false); 3040 break; 3041 } 3042 case NetworkStateTracker.EVENT_NETWORK_SUBTYPE_CHANGED: { 3043 info = (NetworkInfo) msg.obj; 3044 int type = info.getType(); 3045 if (mNetConfigs[type].isDefault()) updateNetworkSettings(mNetTrackers[type]); 3046 break; 3047 } 3048 } 3049 } 3050 } 3051 3052 private class InternalHandler extends Handler { 3053 public InternalHandler(Looper looper) { 3054 super(looper); 3055 } 3056 3057 @Override 3058 public void handleMessage(Message msg) { 3059 NetworkInfo info; 3060 switch (msg.what) { 3061 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 3062 String causedBy = null; 3063 synchronized (ConnectivityService.this) { 3064 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 3065 mNetTransitionWakeLock.isHeld()) { 3066 mNetTransitionWakeLock.release(); 3067 causedBy = mNetTransitionWakeLockCausedBy; 3068 } 3069 } 3070 if (causedBy != null) { 3071 log("NetTransition Wakelock for " + causedBy + " released by timeout"); 3072 } 3073 break; 3074 } 3075 case EVENT_RESTORE_DEFAULT_NETWORK: { 3076 FeatureUser u = (FeatureUser)msg.obj; 3077 u.expire(); 3078 break; 3079 } 3080 case EVENT_INET_CONDITION_CHANGE: { 3081 int netType = msg.arg1; 3082 int condition = msg.arg2; 3083 handleInetConditionChange(netType, condition); 3084 break; 3085 } 3086 case EVENT_INET_CONDITION_HOLD_END: { 3087 int netType = msg.arg1; 3088 int sequence = msg.arg2; 3089 handleInetConditionHoldEnd(netType, sequence); 3090 break; 3091 } 3092 case EVENT_SET_NETWORK_PREFERENCE: { 3093 int preference = msg.arg1; 3094 handleSetNetworkPreference(preference); 3095 break; 3096 } 3097 case EVENT_SET_MOBILE_DATA: { 3098 boolean enabled = (msg.arg1 == ENABLED); 3099 handleSetMobileData(enabled); 3100 break; 3101 } 3102 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 3103 handleDeprecatedGlobalHttpProxy(); 3104 break; 3105 } 3106 case EVENT_SET_DEPENDENCY_MET: { 3107 boolean met = (msg.arg1 == ENABLED); 3108 handleSetDependencyMet(msg.arg2, met); 3109 break; 3110 } 3111 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 3112 Intent intent = (Intent)msg.obj; 3113 sendStickyBroadcast(intent); 3114 break; 3115 } 3116 case EVENT_SET_POLICY_DATA_ENABLE: { 3117 final int networkType = msg.arg1; 3118 final boolean enabled = msg.arg2 == ENABLED; 3119 handleSetPolicyDataEnable(networkType, enabled); 3120 break; 3121 } 3122 case EVENT_VPN_STATE_CHANGED: { 3123 if (mLockdownTracker != null) { 3124 mLockdownTracker.onVpnStateChanged((NetworkInfo) msg.obj); 3125 } 3126 break; 3127 } 3128 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 3129 int tag = mEnableFailFastMobileDataTag.get(); 3130 if (msg.arg1 == tag) { 3131 MobileDataStateTracker mobileDst = 3132 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3133 if (mobileDst != null) { 3134 mobileDst.setEnableFailFastMobileData(msg.arg2); 3135 } 3136 } else { 3137 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 3138 + " != tag:" + tag); 3139 } 3140 break; 3141 } 3142 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 3143 handleNetworkSamplingTimeout(); 3144 break; 3145 } 3146 case EVENT_PROXY_HAS_CHANGED: { 3147 handleApplyDefaultProxy((ProxyProperties)msg.obj); 3148 break; 3149 } 3150 } 3151 } 3152 } 3153 3154 // javadoc from interface 3155 public int tether(String iface) { 3156 enforceTetherChangePermission(); 3157 3158 if (isTetheringSupported()) { 3159 return mTethering.tether(iface); 3160 } else { 3161 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3162 } 3163 } 3164 3165 // javadoc from interface 3166 public int untether(String iface) { 3167 enforceTetherChangePermission(); 3168 3169 if (isTetheringSupported()) { 3170 return mTethering.untether(iface); 3171 } else { 3172 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3173 } 3174 } 3175 3176 // javadoc from interface 3177 public int getLastTetherError(String iface) { 3178 enforceTetherAccessPermission(); 3179 3180 if (isTetheringSupported()) { 3181 return mTethering.getLastTetherError(iface); 3182 } else { 3183 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3184 } 3185 } 3186 3187 // TODO - proper iface API for selection by property, inspection, etc 3188 public String[] getTetherableUsbRegexs() { 3189 enforceTetherAccessPermission(); 3190 if (isTetheringSupported()) { 3191 return mTethering.getTetherableUsbRegexs(); 3192 } else { 3193 return new String[0]; 3194 } 3195 } 3196 3197 public String[] getTetherableWifiRegexs() { 3198 enforceTetherAccessPermission(); 3199 if (isTetheringSupported()) { 3200 return mTethering.getTetherableWifiRegexs(); 3201 } else { 3202 return new String[0]; 3203 } 3204 } 3205 3206 public String[] getTetherableBluetoothRegexs() { 3207 enforceTetherAccessPermission(); 3208 if (isTetheringSupported()) { 3209 return mTethering.getTetherableBluetoothRegexs(); 3210 } else { 3211 return new String[0]; 3212 } 3213 } 3214 3215 public int setUsbTethering(boolean enable) { 3216 enforceTetherChangePermission(); 3217 if (isTetheringSupported()) { 3218 return mTethering.setUsbTethering(enable); 3219 } else { 3220 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3221 } 3222 } 3223 3224 // TODO - move iface listing, queries, etc to new module 3225 // javadoc from interface 3226 public String[] getTetherableIfaces() { 3227 enforceTetherAccessPermission(); 3228 return mTethering.getTetherableIfaces(); 3229 } 3230 3231 public String[] getTetheredIfaces() { 3232 enforceTetherAccessPermission(); 3233 return mTethering.getTetheredIfaces(); 3234 } 3235 3236 public String[] getTetheringErroredIfaces() { 3237 enforceTetherAccessPermission(); 3238 return mTethering.getErroredIfaces(); 3239 } 3240 3241 // if ro.tether.denied = true we default to no tethering 3242 // gservices could set the secure setting to 1 though to enable it on a build where it 3243 // had previously been turned off. 3244 public boolean isTetheringSupported() { 3245 enforceTetherAccessPermission(); 3246 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 3247 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 3248 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0); 3249 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 3250 mTethering.getTetherableWifiRegexs().length != 0 || 3251 mTethering.getTetherableBluetoothRegexs().length != 0) && 3252 mTethering.getUpstreamIfaceTypes().length != 0); 3253 } 3254 3255 // An API NetworkStateTrackers can call when they lose their network. 3256 // This will automatically be cleared after X seconds or a network becomes CONNECTED, 3257 // whichever happens first. The timer is started by the first caller and not 3258 // restarted by subsequent callers. 3259 public void requestNetworkTransitionWakelock(String forWhom) { 3260 enforceConnectivityInternalPermission(); 3261 synchronized (this) { 3262 if (mNetTransitionWakeLock.isHeld()) return; 3263 mNetTransitionWakeLockSerialNumber++; 3264 mNetTransitionWakeLock.acquire(); 3265 mNetTransitionWakeLockCausedBy = forWhom; 3266 } 3267 mHandler.sendMessageDelayed(mHandler.obtainMessage( 3268 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 3269 mNetTransitionWakeLockSerialNumber, 0), 3270 mNetTransitionWakeLockTimeout); 3271 return; 3272 } 3273 3274 // 100 percent is full good, 0 is full bad. 3275 public void reportInetCondition(int networkType, int percentage) { 3276 if (VDBG) log("reportNetworkCondition(" + networkType + ", " + percentage + ")"); 3277 mContext.enforceCallingOrSelfPermission( 3278 android.Manifest.permission.STATUS_BAR, 3279 "ConnectivityService"); 3280 3281 if (DBG) { 3282 int pid = getCallingPid(); 3283 int uid = getCallingUid(); 3284 String s = pid + "(" + uid + ") reports inet is " + 3285 (percentage > 50 ? "connected" : "disconnected") + " (" + percentage + ") on " + 3286 "network Type " + networkType + " at " + GregorianCalendar.getInstance().getTime(); 3287 mInetLog.add(s); 3288 while(mInetLog.size() > INET_CONDITION_LOG_MAX_SIZE) { 3289 mInetLog.remove(0); 3290 } 3291 } 3292 mHandler.sendMessage(mHandler.obtainMessage( 3293 EVENT_INET_CONDITION_CHANGE, networkType, percentage)); 3294 } 3295 3296 private void handleInetConditionChange(int netType, int condition) { 3297 if (mActiveDefaultNetwork == -1) { 3298 if (DBG) log("handleInetConditionChange: no active default network - ignore"); 3299 return; 3300 } 3301 if (mActiveDefaultNetwork != netType) { 3302 if (DBG) log("handleInetConditionChange: net=" + netType + 3303 " != default=" + mActiveDefaultNetwork + " - ignore"); 3304 return; 3305 } 3306 if (VDBG) { 3307 log("handleInetConditionChange: net=" + 3308 netType + ", condition=" + condition + 3309 ",mActiveDefaultNetwork=" + mActiveDefaultNetwork); 3310 } 3311 mDefaultInetCondition = condition; 3312 int delay; 3313 if (mInetConditionChangeInFlight == false) { 3314 if (VDBG) log("handleInetConditionChange: starting a change hold"); 3315 // setup a new hold to debounce this 3316 if (mDefaultInetCondition > 50) { 3317 delay = Settings.Global.getInt(mContext.getContentResolver(), 3318 Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY, 500); 3319 } else { 3320 delay = Settings.Global.getInt(mContext.getContentResolver(), 3321 Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 3000); 3322 } 3323 mInetConditionChangeInFlight = true; 3324 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_INET_CONDITION_HOLD_END, 3325 mActiveDefaultNetwork, mDefaultConnectionSequence), delay); 3326 } else { 3327 // we've set the new condition, when this hold ends that will get picked up 3328 if (VDBG) log("handleInetConditionChange: currently in hold - not setting new end evt"); 3329 } 3330 } 3331 3332 private void handleInetConditionHoldEnd(int netType, int sequence) { 3333 if (DBG) { 3334 log("handleInetConditionHoldEnd: net=" + netType + 3335 ", condition=" + mDefaultInetCondition + 3336 ", published condition=" + mDefaultInetConditionPublished); 3337 } 3338 mInetConditionChangeInFlight = false; 3339 3340 if (mActiveDefaultNetwork == -1) { 3341 if (DBG) log("handleInetConditionHoldEnd: no active default network - ignoring"); 3342 return; 3343 } 3344 if (mDefaultConnectionSequence != sequence) { 3345 if (DBG) log("handleInetConditionHoldEnd: event hold for obsolete network - ignoring"); 3346 return; 3347 } 3348 // TODO: Figure out why this optimization sometimes causes a 3349 // change in mDefaultInetCondition to be missed and the 3350 // UI to not be updated. 3351 //if (mDefaultInetConditionPublished == mDefaultInetCondition) { 3352 // if (DBG) log("no change in condition - aborting"); 3353 // return; 3354 //} 3355 NetworkInfo networkInfo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 3356 if (networkInfo.isConnected() == false) { 3357 if (DBG) log("handleInetConditionHoldEnd: default network not connected - ignoring"); 3358 return; 3359 } 3360 mDefaultInetConditionPublished = mDefaultInetCondition; 3361 sendInetConditionBroadcast(networkInfo); 3362 return; 3363 } 3364 3365 public ProxyProperties getProxy() { 3366 // this information is already available as a world read/writable jvm property 3367 // so this API change wouldn't have a benifit. It also breaks the passing 3368 // of proxy info to all the JVMs. 3369 // enforceAccessPermission(); 3370 synchronized (mProxyLock) { 3371 ProxyProperties ret = mGlobalProxy; 3372 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 3373 return ret; 3374 } 3375 } 3376 3377 public void setGlobalProxy(ProxyProperties proxyProperties) { 3378 enforceConnectivityInternalPermission(); 3379 3380 synchronized (mProxyLock) { 3381 if (proxyProperties == mGlobalProxy) return; 3382 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 3383 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 3384 3385 String host = ""; 3386 int port = 0; 3387 String exclList = ""; 3388 String pacFileUrl = ""; 3389 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 3390 !TextUtils.isEmpty(proxyProperties.getPacFileUrl()))) { 3391 if (!proxyProperties.isValid()) { 3392 if (DBG) 3393 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3394 return; 3395 } 3396 mGlobalProxy = new ProxyProperties(proxyProperties); 3397 host = mGlobalProxy.getHost(); 3398 port = mGlobalProxy.getPort(); 3399 exclList = mGlobalProxy.getExclusionList(); 3400 if (proxyProperties.getPacFileUrl() != null) { 3401 pacFileUrl = proxyProperties.getPacFileUrl(); 3402 } 3403 } else { 3404 mGlobalProxy = null; 3405 } 3406 ContentResolver res = mContext.getContentResolver(); 3407 final long token = Binder.clearCallingIdentity(); 3408 try { 3409 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 3410 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 3411 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 3412 exclList); 3413 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 3414 } finally { 3415 Binder.restoreCallingIdentity(token); 3416 } 3417 } 3418 3419 if (mGlobalProxy == null) { 3420 proxyProperties = mDefaultProxy; 3421 } 3422 sendProxyBroadcast(proxyProperties); 3423 } 3424 3425 private void loadGlobalProxy() { 3426 ContentResolver res = mContext.getContentResolver(); 3427 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 3428 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 3429 String exclList = Settings.Global.getString(res, 3430 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 3431 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 3432 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 3433 ProxyProperties proxyProperties; 3434 if (!TextUtils.isEmpty(pacFileUrl)) { 3435 proxyProperties = new ProxyProperties(pacFileUrl); 3436 } else { 3437 proxyProperties = new ProxyProperties(host, port, exclList); 3438 } 3439 if (!proxyProperties.isValid()) { 3440 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3441 return; 3442 } 3443 3444 synchronized (mProxyLock) { 3445 mGlobalProxy = proxyProperties; 3446 } 3447 } 3448 } 3449 3450 public ProxyProperties getGlobalProxy() { 3451 // this information is already available as a world read/writable jvm property 3452 // so this API change wouldn't have a benifit. It also breaks the passing 3453 // of proxy info to all the JVMs. 3454 // enforceAccessPermission(); 3455 synchronized (mProxyLock) { 3456 return mGlobalProxy; 3457 } 3458 } 3459 3460 private void handleApplyDefaultProxy(ProxyProperties proxy) { 3461 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3462 && TextUtils.isEmpty(proxy.getPacFileUrl())) { 3463 proxy = null; 3464 } 3465 synchronized (mProxyLock) { 3466 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3467 if (mDefaultProxy == proxy) return; // catches repeated nulls 3468 if (proxy != null && !proxy.isValid()) { 3469 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3470 return; 3471 } 3472 mDefaultProxy = proxy; 3473 3474 if (mGlobalProxy != null) return; 3475 if (!mDefaultProxyDisabled) { 3476 sendProxyBroadcast(proxy); 3477 } 3478 } 3479 } 3480 3481 private void handleDeprecatedGlobalHttpProxy() { 3482 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3483 Settings.Global.HTTP_PROXY); 3484 if (!TextUtils.isEmpty(proxy)) { 3485 String data[] = proxy.split(":"); 3486 if (data.length == 0) { 3487 return; 3488 } 3489 3490 String proxyHost = data[0]; 3491 int proxyPort = 8080; 3492 if (data.length > 1) { 3493 try { 3494 proxyPort = Integer.parseInt(data[1]); 3495 } catch (NumberFormatException e) { 3496 return; 3497 } 3498 } 3499 ProxyProperties p = new ProxyProperties(data[0], proxyPort, ""); 3500 setGlobalProxy(p); 3501 } 3502 } 3503 3504 private void sendProxyBroadcast(ProxyProperties proxy) { 3505 if (proxy == null) proxy = new ProxyProperties("", 0, ""); 3506 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3507 if (DBG) log("sending Proxy Broadcast for " + proxy); 3508 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3509 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3510 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3511 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3512 final long ident = Binder.clearCallingIdentity(); 3513 try { 3514 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3515 } finally { 3516 Binder.restoreCallingIdentity(ident); 3517 } 3518 } 3519 3520 private static class SettingsObserver extends ContentObserver { 3521 private int mWhat; 3522 private Handler mHandler; 3523 SettingsObserver(Handler handler, int what) { 3524 super(handler); 3525 mHandler = handler; 3526 mWhat = what; 3527 } 3528 3529 void observe(Context context) { 3530 ContentResolver resolver = context.getContentResolver(); 3531 resolver.registerContentObserver(Settings.Global.getUriFor( 3532 Settings.Global.HTTP_PROXY), false, this); 3533 } 3534 3535 @Override 3536 public void onChange(boolean selfChange) { 3537 mHandler.obtainMessage(mWhat).sendToTarget(); 3538 } 3539 } 3540 3541 private static void log(String s) { 3542 Slog.d(TAG, s); 3543 } 3544 3545 private static void loge(String s) { 3546 Slog.e(TAG, s); 3547 } 3548 3549 int convertFeatureToNetworkType(int networkType, String feature) { 3550 int usedNetworkType = networkType; 3551 3552 if(networkType == ConnectivityManager.TYPE_MOBILE) { 3553 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 3554 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 3555 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 3556 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 3557 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 3558 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 3559 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 3560 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 3561 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 3562 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 3563 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 3564 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 3565 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 3566 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 3567 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 3568 } else { 3569 Slog.e(TAG, "Can't match any mobile netTracker!"); 3570 } 3571 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 3572 if (TextUtils.equals(feature, "p2p")) { 3573 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 3574 } else { 3575 Slog.e(TAG, "Can't match any wifi netTracker!"); 3576 } 3577 } else { 3578 Slog.e(TAG, "Unexpected network type"); 3579 } 3580 return usedNetworkType; 3581 } 3582 3583 private static <T> T checkNotNull(T value, String message) { 3584 if (value == null) { 3585 throw new NullPointerException(message); 3586 } 3587 return value; 3588 } 3589 3590 /** 3591 * Protect a socket from VPN routing rules. This method is used by 3592 * VpnBuilder and not available in ConnectivityManager. Permissions 3593 * are checked in Vpn class. 3594 * @hide 3595 */ 3596 @Override 3597 public boolean protectVpn(ParcelFileDescriptor socket) { 3598 throwIfLockdownEnabled(); 3599 try { 3600 int type = mActiveDefaultNetwork; 3601 int user = UserHandle.getUserId(Binder.getCallingUid()); 3602 if (ConnectivityManager.isNetworkTypeValid(type) && mNetTrackers[type] != null) { 3603 synchronized(mVpns) { 3604 mVpns.get(user).protect(socket, 3605 mNetTrackers[type].getLinkProperties().getInterfaceName()); 3606 } 3607 return true; 3608 } 3609 } catch (Exception e) { 3610 // ignore 3611 } finally { 3612 try { 3613 socket.close(); 3614 } catch (Exception e) { 3615 // ignore 3616 } 3617 } 3618 return false; 3619 } 3620 3621 /** 3622 * Prepare for a VPN application. This method is used by VpnDialogs 3623 * and not available in ConnectivityManager. Permissions are checked 3624 * in Vpn class. 3625 * @hide 3626 */ 3627 @Override 3628 public boolean prepareVpn(String oldPackage, String newPackage) { 3629 throwIfLockdownEnabled(); 3630 int user = UserHandle.getUserId(Binder.getCallingUid()); 3631 synchronized(mVpns) { 3632 return mVpns.get(user).prepare(oldPackage, newPackage); 3633 } 3634 } 3635 3636 @Override 3637 public void markSocketAsUser(ParcelFileDescriptor socket, int uid) { 3638 enforceMarkNetworkSocketPermission(); 3639 final long token = Binder.clearCallingIdentity(); 3640 try { 3641 int mark = mNetd.getMarkForUid(uid); 3642 // Clear the mark on the socket if no mark is needed to prevent socket reuse issues 3643 if (mark == -1) { 3644 mark = 0; 3645 } 3646 NetworkUtils.markSocket(socket.getFd(), mark); 3647 } catch (RemoteException e) { 3648 } finally { 3649 Binder.restoreCallingIdentity(token); 3650 } 3651 } 3652 3653 /** 3654 * Configure a TUN interface and return its file descriptor. Parameters 3655 * are encoded and opaque to this class. This method is used by VpnBuilder 3656 * and not available in ConnectivityManager. Permissions are checked in 3657 * Vpn class. 3658 * @hide 3659 */ 3660 @Override 3661 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3662 throwIfLockdownEnabled(); 3663 int user = UserHandle.getUserId(Binder.getCallingUid()); 3664 synchronized(mVpns) { 3665 return mVpns.get(user).establish(config); 3666 } 3667 } 3668 3669 /** 3670 * Start legacy VPN, controlling native daemons as needed. Creates a 3671 * secondary thread to perform connection work, returning quickly. 3672 */ 3673 @Override 3674 public void startLegacyVpn(VpnProfile profile) { 3675 throwIfLockdownEnabled(); 3676 final LinkProperties egress = getActiveLinkProperties(); 3677 if (egress == null) { 3678 throw new IllegalStateException("Missing active network connection"); 3679 } 3680 int user = UserHandle.getUserId(Binder.getCallingUid()); 3681 synchronized(mVpns) { 3682 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3683 } 3684 } 3685 3686 /** 3687 * Return the information of the ongoing legacy VPN. This method is used 3688 * by VpnSettings and not available in ConnectivityManager. Permissions 3689 * are checked in Vpn class. 3690 * @hide 3691 */ 3692 @Override 3693 public LegacyVpnInfo getLegacyVpnInfo() { 3694 throwIfLockdownEnabled(); 3695 int user = UserHandle.getUserId(Binder.getCallingUid()); 3696 synchronized(mVpns) { 3697 return mVpns.get(user).getLegacyVpnInfo(); 3698 } 3699 } 3700 3701 /** 3702 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 3703 * not available in ConnectivityManager. 3704 * Permissions are checked in Vpn class. 3705 * @hide 3706 */ 3707 @Override 3708 public VpnConfig getVpnConfig() { 3709 int user = UserHandle.getUserId(Binder.getCallingUid()); 3710 synchronized(mVpns) { 3711 return mVpns.get(user).getVpnConfig(); 3712 } 3713 } 3714 3715 /** 3716 * Callback for VPN subsystem. Currently VPN is not adapted to the service 3717 * through NetworkStateTracker since it works differently. For example, it 3718 * needs to override DNS servers but never takes the default routes. It 3719 * relies on another data network, and it could keep existing connections 3720 * alive after reconnecting, switching between networks, or even resuming 3721 * from deep sleep. Calls from applications should be done synchronously 3722 * to avoid race conditions. As these are all hidden APIs, refactoring can 3723 * be done whenever a better abstraction is developed. 3724 */ 3725 public class VpnCallback { 3726 private VpnCallback() { 3727 } 3728 3729 public void onStateChanged(NetworkInfo info) { 3730 mHandler.obtainMessage(EVENT_VPN_STATE_CHANGED, info).sendToTarget(); 3731 } 3732 3733 public void override(String iface, List<String> dnsServers, List<String> searchDomains) { 3734 if (dnsServers == null) { 3735 restore(); 3736 return; 3737 } 3738 3739 // Convert DNS servers into addresses. 3740 List<InetAddress> addresses = new ArrayList<InetAddress>(); 3741 for (String address : dnsServers) { 3742 // Double check the addresses and remove invalid ones. 3743 try { 3744 addresses.add(InetAddress.parseNumericAddress(address)); 3745 } catch (Exception e) { 3746 // ignore 3747 } 3748 } 3749 if (addresses.isEmpty()) { 3750 restore(); 3751 return; 3752 } 3753 3754 // Concatenate search domains into a string. 3755 StringBuilder buffer = new StringBuilder(); 3756 if (searchDomains != null) { 3757 for (String domain : searchDomains) { 3758 buffer.append(domain).append(' '); 3759 } 3760 } 3761 String domains = buffer.toString().trim(); 3762 3763 // Apply DNS changes. 3764 synchronized (mDnsLock) { 3765 updateDnsLocked("VPN", iface, addresses, domains, false); 3766 } 3767 3768 // Temporarily disable the default proxy (not global). 3769 synchronized (mProxyLock) { 3770 mDefaultProxyDisabled = true; 3771 if (mGlobalProxy == null && mDefaultProxy != null) { 3772 sendProxyBroadcast(null); 3773 } 3774 } 3775 3776 // TODO: support proxy per network. 3777 } 3778 3779 public void restore() { 3780 synchronized (mProxyLock) { 3781 mDefaultProxyDisabled = false; 3782 if (mGlobalProxy == null && mDefaultProxy != null) { 3783 sendProxyBroadcast(mDefaultProxy); 3784 } 3785 } 3786 } 3787 3788 public void protect(ParcelFileDescriptor socket) { 3789 try { 3790 final int mark = mNetd.getMarkForProtect(); 3791 NetworkUtils.markSocket(socket.getFd(), mark); 3792 } catch (RemoteException e) { 3793 } 3794 } 3795 3796 public void setRoutes(String interfaze, List<RouteInfo> routes) { 3797 for (RouteInfo route : routes) { 3798 try { 3799 mNetd.setMarkedForwardingRoute(interfaze, route); 3800 } catch (RemoteException e) { 3801 } 3802 } 3803 } 3804 3805 public void setMarkedForwarding(String interfaze) { 3806 try { 3807 mNetd.setMarkedForwarding(interfaze); 3808 } catch (RemoteException e) { 3809 } 3810 } 3811 3812 public void clearMarkedForwarding(String interfaze) { 3813 try { 3814 mNetd.clearMarkedForwarding(interfaze); 3815 } catch (RemoteException e) { 3816 } 3817 } 3818 3819 public void addUserForwarding(String interfaze, int uid, boolean forwardDns) { 3820 int uidStart = uid * UserHandle.PER_USER_RANGE; 3821 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 3822 addUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 3823 } 3824 3825 public void clearUserForwarding(String interfaze, int uid, boolean forwardDns) { 3826 int uidStart = uid * UserHandle.PER_USER_RANGE; 3827 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 3828 clearUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 3829 } 3830 3831 public void addUidForwarding(String interfaze, int uidStart, int uidEnd, 3832 boolean forwardDns) { 3833 try { 3834 mNetd.setUidRangeRoute(interfaze,uidStart, uidEnd); 3835 if (forwardDns) mNetd.setDnsInterfaceForUidRange(interfaze, uidStart, uidEnd); 3836 } catch (RemoteException e) { 3837 } 3838 3839 } 3840 3841 public void clearUidForwarding(String interfaze, int uidStart, int uidEnd, 3842 boolean forwardDns) { 3843 try { 3844 mNetd.clearUidRangeRoute(interfaze, uidStart, uidEnd); 3845 if (forwardDns) mNetd.clearDnsInterfaceForUidRange(uidStart, uidEnd); 3846 } catch (RemoteException e) { 3847 } 3848 3849 } 3850 } 3851 3852 @Override 3853 public boolean updateLockdownVpn() { 3854 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3855 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3856 return false; 3857 } 3858 3859 // Tear down existing lockdown if profile was removed 3860 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3861 if (mLockdownEnabled) { 3862 if (!mKeyStore.isUnlocked()) { 3863 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3864 return false; 3865 } 3866 3867 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3868 final VpnProfile profile = VpnProfile.decode( 3869 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3870 int user = UserHandle.getUserId(Binder.getCallingUid()); 3871 synchronized(mVpns) { 3872 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3873 profile)); 3874 } 3875 } else { 3876 setLockdownTracker(null); 3877 } 3878 3879 return true; 3880 } 3881 3882 /** 3883 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3884 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3885 */ 3886 private void setLockdownTracker(LockdownVpnTracker tracker) { 3887 // Shutdown any existing tracker 3888 final LockdownVpnTracker existing = mLockdownTracker; 3889 mLockdownTracker = null; 3890 if (existing != null) { 3891 existing.shutdown(); 3892 } 3893 3894 try { 3895 if (tracker != null) { 3896 mNetd.setFirewallEnabled(true); 3897 mNetd.setFirewallInterfaceRule("lo", true); 3898 mLockdownTracker = tracker; 3899 mLockdownTracker.init(); 3900 } else { 3901 mNetd.setFirewallEnabled(false); 3902 } 3903 } catch (RemoteException e) { 3904 // ignored; NMS lives inside system_server 3905 } 3906 } 3907 3908 private void throwIfLockdownEnabled() { 3909 if (mLockdownEnabled) { 3910 throw new IllegalStateException("Unavailable in lockdown mode"); 3911 } 3912 } 3913 3914 public void supplyMessenger(int networkType, Messenger messenger) { 3915 enforceConnectivityInternalPermission(); 3916 3917 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 3918 mNetTrackers[networkType].supplyMessenger(messenger); 3919 } 3920 } 3921 3922 public int findConnectionTypeForIface(String iface) { 3923 enforceConnectivityInternalPermission(); 3924 3925 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 3926 for (NetworkStateTracker tracker : mNetTrackers) { 3927 if (tracker != null) { 3928 LinkProperties lp = tracker.getLinkProperties(); 3929 if (lp != null && iface.equals(lp.getInterfaceName())) { 3930 return tracker.getNetworkInfo().getType(); 3931 } 3932 } 3933 } 3934 return ConnectivityManager.TYPE_NONE; 3935 } 3936 3937 /** 3938 * Have mobile data fail fast if enabled. 3939 * 3940 * @param enabled DctConstants.ENABLED/DISABLED 3941 */ 3942 private void setEnableFailFastMobileData(int enabled) { 3943 int tag; 3944 3945 if (enabled == DctConstants.ENABLED) { 3946 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 3947 } else { 3948 tag = mEnableFailFastMobileDataTag.get(); 3949 } 3950 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 3951 enabled)); 3952 } 3953 3954 private boolean isMobileDataStateTrackerReady() { 3955 MobileDataStateTracker mdst = 3956 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 3957 return (mdst != null) && (mdst.isReady()); 3958 } 3959 3960 /** 3961 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 3962 */ 3963 3964 /** 3965 * No connection was possible to the network. 3966 * This is NOT a warm sim. 3967 */ 3968 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 3969 3970 /** 3971 * A connection was made to the internet, all is well. 3972 * This is NOT a warm sim. 3973 */ 3974 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 3975 3976 /** 3977 * A connection was made but no dns server was available to resolve a name to address. 3978 * This is NOT a warm sim since provisioning network is supported. 3979 */ 3980 private static final int CMP_RESULT_CODE_NO_DNS = 2; 3981 3982 /** 3983 * A connection was made but could not open a TCP connection. 3984 * This is NOT a warm sim since provisioning network is supported. 3985 */ 3986 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 3987 3988 /** 3989 * A connection was made but there was a redirection, we appear to be in walled garden. 3990 * This is an indication of a warm sim on a mobile network such as T-Mobile. 3991 */ 3992 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 3993 3994 /** 3995 * The mobile network is a provisioning network. 3996 * This is an indication of a warm sim on a mobile network such as AT&T. 3997 */ 3998 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 3999 4000 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 4001 4002 @Override 4003 public int checkMobileProvisioning(int suggestedTimeOutMs) { 4004 int timeOutMs = -1; 4005 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 4006 enforceConnectivityInternalPermission(); 4007 4008 final long token = Binder.clearCallingIdentity(); 4009 try { 4010 timeOutMs = suggestedTimeOutMs; 4011 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 4012 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 4013 } 4014 4015 // Check that mobile networks are supported 4016 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 4017 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 4018 if (DBG) log("checkMobileProvisioning: X no mobile network"); 4019 return timeOutMs; 4020 } 4021 4022 // If we're already checking don't do it again 4023 // TODO: Add a queue of results... 4024 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 4025 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 4026 return timeOutMs; 4027 } 4028 4029 // Start off with mobile notification off 4030 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4031 4032 CheckMp checkMp = new CheckMp(mContext, this); 4033 CheckMp.CallBack cb = new CheckMp.CallBack() { 4034 @Override 4035 void onComplete(Integer result) { 4036 if (DBG) log("CheckMp.onComplete: result=" + result); 4037 NetworkInfo ni = 4038 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 4039 switch(result) { 4040 case CMP_RESULT_CODE_CONNECTABLE: 4041 case CMP_RESULT_CODE_NO_CONNECTION: 4042 case CMP_RESULT_CODE_NO_DNS: 4043 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 4044 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 4045 break; 4046 } 4047 case CMP_RESULT_CODE_REDIRECTED: { 4048 if (DBG) log("CheckMp.onComplete: warm sim"); 4049 String url = getMobileProvisioningUrl(); 4050 if (TextUtils.isEmpty(url)) { 4051 url = getMobileRedirectedProvisioningUrl(); 4052 } 4053 if (TextUtils.isEmpty(url) == false) { 4054 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 4055 setProvNotificationVisible(true, 4056 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4057 url); 4058 } else { 4059 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 4060 } 4061 break; 4062 } 4063 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 4064 String url = getMobileProvisioningUrl(); 4065 if (TextUtils.isEmpty(url) == false) { 4066 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 4067 setProvNotificationVisible(true, 4068 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4069 url); 4070 } else { 4071 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 4072 } 4073 break; 4074 } 4075 default: { 4076 loge("CheckMp.onComplete: ignore unexpected result=" + result); 4077 break; 4078 } 4079 } 4080 mIsCheckingMobileProvisioning.set(false); 4081 } 4082 }; 4083 CheckMp.Params params = 4084 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 4085 if (DBG) log("checkMobileProvisioning: params=" + params); 4086 checkMp.execute(params); 4087 } finally { 4088 Binder.restoreCallingIdentity(token); 4089 if (DBG) log("checkMobileProvisioning: X"); 4090 } 4091 return timeOutMs; 4092 } 4093 4094 static class CheckMp extends 4095 AsyncTask<CheckMp.Params, Void, Integer> { 4096 private static final String CHECKMP_TAG = "CheckMp"; 4097 4098 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 4099 private static boolean mTestingFailures; 4100 4101 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 4102 private static final int MAX_LOOPS = 4; 4103 4104 // Number of milli-seconds to complete all of the retires 4105 public static final int MAX_TIMEOUT_MS = 60000; 4106 4107 // The socket should retry only 5 seconds, the default is longer 4108 private static final int SOCKET_TIMEOUT_MS = 5000; 4109 4110 // Sleep time for network errors 4111 private static final int NET_ERROR_SLEEP_SEC = 3; 4112 4113 // Sleep time for network route establishment 4114 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 4115 4116 // Short sleep time for polling :( 4117 private static final int POLLING_SLEEP_SEC = 1; 4118 4119 private Context mContext; 4120 private ConnectivityService mCs; 4121 private TelephonyManager mTm; 4122 private Params mParams; 4123 4124 /** 4125 * Parameters for AsyncTask.execute 4126 */ 4127 static class Params { 4128 private String mUrl; 4129 private long mTimeOutMs; 4130 private CallBack mCb; 4131 4132 Params(String url, long timeOutMs, CallBack cb) { 4133 mUrl = url; 4134 mTimeOutMs = timeOutMs; 4135 mCb = cb; 4136 } 4137 4138 @Override 4139 public String toString() { 4140 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 4141 } 4142 } 4143 4144 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 4145 // issued by name or ip address, for Google its by name so when we construct 4146 // this HostnameVerifier we'll pass the original Uri and use it to verify 4147 // the host. If the host name in the original uril fails we'll test the 4148 // hostname parameter just incase things change. 4149 static class CheckMpHostnameVerifier implements HostnameVerifier { 4150 Uri mOrgUri; 4151 4152 CheckMpHostnameVerifier(Uri orgUri) { 4153 mOrgUri = orgUri; 4154 } 4155 4156 @Override 4157 public boolean verify(String hostname, SSLSession session) { 4158 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 4159 String orgUriHost = mOrgUri.getHost(); 4160 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 4161 if (DBG) { 4162 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 4163 + " orgUriHost=" + orgUriHost); 4164 } 4165 return retVal; 4166 } 4167 } 4168 4169 /** 4170 * The call back object passed in Params. onComplete will be called 4171 * on the main thread. 4172 */ 4173 abstract static class CallBack { 4174 // Called on the main thread. 4175 abstract void onComplete(Integer result); 4176 } 4177 4178 public CheckMp(Context context, ConnectivityService cs) { 4179 if (Build.IS_DEBUGGABLE) { 4180 mTestingFailures = 4181 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 4182 } else { 4183 mTestingFailures = false; 4184 } 4185 4186 mContext = context; 4187 mCs = cs; 4188 4189 // Setup access to TelephonyService we'll be using. 4190 mTm = (TelephonyManager) mContext.getSystemService( 4191 Context.TELEPHONY_SERVICE); 4192 } 4193 4194 /** 4195 * Get the default url to use for the test. 4196 */ 4197 public String getDefaultUrl() { 4198 // See http://go/clientsdns for usage approval 4199 String server = Settings.Global.getString(mContext.getContentResolver(), 4200 Settings.Global.CAPTIVE_PORTAL_SERVER); 4201 if (server == null) { 4202 server = "clients3.google.com"; 4203 } 4204 return "http://" + server + "/generate_204"; 4205 } 4206 4207 /** 4208 * Detect if its possible to connect to the http url. DNS based detection techniques 4209 * do not work at all hotspots. The best way to check is to perform a request to 4210 * a known address that fetches the data we expect. 4211 */ 4212 private synchronized Integer isMobileOk(Params params) { 4213 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 4214 Uri orgUri = Uri.parse(params.mUrl); 4215 Random rand = new Random(); 4216 mParams = params; 4217 4218 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 4219 result = CMP_RESULT_CODE_NO_CONNECTION; 4220 log("isMobileOk: X not mobile capable result=" + result); 4221 return result; 4222 } 4223 4224 // See if we've already determined we've got a provisioning connection, 4225 // if so we don't need to do anything active. 4226 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 4227 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4228 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 4229 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 4230 4231 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 4232 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4233 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 4234 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 4235 4236 if (isDefaultProvisioning || isHipriProvisioning) { 4237 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4238 log("isMobileOk: X default || hipri is provisioning result=" + result); 4239 return result; 4240 } 4241 4242 try { 4243 // Continue trying to connect until time has run out 4244 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 4245 4246 if (!mCs.isMobileDataStateTrackerReady()) { 4247 // Wait for MobileDataStateTracker to be ready. 4248 if (DBG) log("isMobileOk: mdst is not ready"); 4249 while(SystemClock.elapsedRealtime() < endTime) { 4250 if (mCs.isMobileDataStateTrackerReady()) { 4251 // Enable fail fast as we'll do retries here and use a 4252 // hipri connection so the default connection stays active. 4253 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 4254 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 4255 break; 4256 } 4257 sleep(POLLING_SLEEP_SEC); 4258 } 4259 } 4260 4261 log("isMobileOk: start hipri url=" + params.mUrl); 4262 4263 // First wait until we can start using hipri 4264 Binder binder = new Binder(); 4265 while(SystemClock.elapsedRealtime() < endTime) { 4266 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4267 Phone.FEATURE_ENABLE_HIPRI, binder); 4268 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 4269 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 4270 log("isMobileOk: hipri started"); 4271 break; 4272 } 4273 if (VDBG) log("isMobileOk: hipri not started yet"); 4274 result = CMP_RESULT_CODE_NO_CONNECTION; 4275 sleep(POLLING_SLEEP_SEC); 4276 } 4277 4278 // Continue trying to connect until time has run out 4279 while(SystemClock.elapsedRealtime() < endTime) { 4280 try { 4281 // Wait for hipri to connect. 4282 // TODO: Don't poll and handle situation where hipri fails 4283 // because default is retrying. See b/9569540 4284 NetworkInfo.State state = mCs 4285 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4286 if (state != NetworkInfo.State.CONNECTED) { 4287 if (true/*VDBG*/) { 4288 log("isMobileOk: not connected ni=" + 4289 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4290 } 4291 sleep(POLLING_SLEEP_SEC); 4292 result = CMP_RESULT_CODE_NO_CONNECTION; 4293 continue; 4294 } 4295 4296 // Hipri has started check if this is a provisioning url 4297 MobileDataStateTracker mdst = (MobileDataStateTracker) 4298 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4299 if (mdst.isProvisioningNetwork()) { 4300 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4301 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 4302 return result; 4303 } else { 4304 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 4305 } 4306 4307 // Get of the addresses associated with the url host. We need to use the 4308 // address otherwise HttpURLConnection object will use the name to get 4309 // the addresses and will try every address but that will bypass the 4310 // route to host we setup and the connection could succeed as the default 4311 // interface might be connected to the internet via wifi or other interface. 4312 InetAddress[] addresses; 4313 try { 4314 addresses = InetAddress.getAllByName(orgUri.getHost()); 4315 } catch (UnknownHostException e) { 4316 result = CMP_RESULT_CODE_NO_DNS; 4317 log("isMobileOk: X UnknownHostException result=" + result); 4318 return result; 4319 } 4320 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 4321 4322 // Get the type of addresses supported by this link 4323 LinkProperties lp = mCs.getLinkProperties( 4324 ConnectivityManager.TYPE_MOBILE_HIPRI); 4325 boolean linkHasIpv4 = lp.hasIPv4Address(); 4326 boolean linkHasIpv6 = lp.hasIPv6Address(); 4327 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 4328 + " linkHasIpv6=" + linkHasIpv6); 4329 4330 final ArrayList<InetAddress> validAddresses = 4331 new ArrayList<InetAddress>(addresses.length); 4332 4333 for (InetAddress addr : addresses) { 4334 if (((addr instanceof Inet4Address) && linkHasIpv4) || 4335 ((addr instanceof Inet6Address) && linkHasIpv6)) { 4336 validAddresses.add(addr); 4337 } 4338 } 4339 4340 if (validAddresses.size() == 0) { 4341 return CMP_RESULT_CODE_NO_CONNECTION; 4342 } 4343 4344 int addrTried = 0; 4345 while (true) { 4346 // Loop through at most MAX_LOOPS valid addresses or until 4347 // we run out of time 4348 if (addrTried++ >= MAX_LOOPS) { 4349 log("isMobileOk: too many loops tried - giving up"); 4350 break; 4351 } 4352 if (SystemClock.elapsedRealtime() >= endTime) { 4353 log("isMobileOk: spend too much time - giving up"); 4354 break; 4355 } 4356 4357 InetAddress hostAddr = validAddresses.get(rand.nextInt( 4358 validAddresses.size())); 4359 4360 // Make a route to host so we check the specific interface. 4361 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 4362 hostAddr.getAddress(), null)) { 4363 // Wait a short time to be sure the route is established ?? 4364 log("isMobileOk:" 4365 + " wait to establish route to hostAddr=" + hostAddr); 4366 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 4367 } else { 4368 log("isMobileOk:" 4369 + " could not establish route to hostAddr=" + hostAddr); 4370 // Wait a short time before the next attempt 4371 sleep(NET_ERROR_SLEEP_SEC); 4372 continue; 4373 } 4374 4375 // Rewrite the url to have numeric address to use the specific route 4376 // using http for half the attempts and https for the other half. 4377 // Doing https first and http second as on a redirected walled garden 4378 // such as t-mobile uses we get a SocketTimeoutException: "SSL 4379 // handshake timed out" which we declare as 4380 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 4381 // having http second we will be using logic used for some time. 4382 URL newUrl; 4383 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 4384 newUrl = new URL(scheme, hostAddr.getHostAddress(), 4385 orgUri.getPath()); 4386 log("isMobileOk: newUrl=" + newUrl); 4387 4388 HttpURLConnection urlConn = null; 4389 try { 4390 // Open the connection set the request headers and get the response 4391 urlConn = (HttpURLConnection)newUrl.openConnection( 4392 java.net.Proxy.NO_PROXY); 4393 if (scheme.equals("https")) { 4394 ((HttpsURLConnection)urlConn).setHostnameVerifier( 4395 new CheckMpHostnameVerifier(orgUri)); 4396 } 4397 urlConn.setInstanceFollowRedirects(false); 4398 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 4399 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 4400 urlConn.setUseCaches(false); 4401 urlConn.setAllowUserInteraction(false); 4402 // Set the "Connection" to "Close" as by default "Keep-Alive" 4403 // is used which is useless in this case. 4404 urlConn.setRequestProperty("Connection", "close"); 4405 int responseCode = urlConn.getResponseCode(); 4406 4407 // For debug display the headers 4408 Map<String, List<String>> headers = urlConn.getHeaderFields(); 4409 log("isMobileOk: headers=" + headers); 4410 4411 // Close the connection 4412 urlConn.disconnect(); 4413 urlConn = null; 4414 4415 if (mTestingFailures) { 4416 // Pretend no connection, this tests using http and https 4417 result = CMP_RESULT_CODE_NO_CONNECTION; 4418 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 4419 continue; 4420 } 4421 4422 if (responseCode == 204) { 4423 // Return 4424 result = CMP_RESULT_CODE_CONNECTABLE; 4425 log("isMobileOk: X got expected responseCode=" + responseCode 4426 + " result=" + result); 4427 return result; 4428 } else { 4429 // Retry to be sure this was redirected, we've gotten 4430 // occasions where a server returned 200 even though 4431 // the device didn't have a "warm" sim. 4432 log("isMobileOk: not expected responseCode=" + responseCode); 4433 // TODO - it would be nice in the single-address case to do 4434 // another DNS resolve here, but flushing the cache is a bit 4435 // heavy-handed. 4436 result = CMP_RESULT_CODE_REDIRECTED; 4437 } 4438 } catch (Exception e) { 4439 log("isMobileOk: HttpURLConnection Exception" + e); 4440 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 4441 if (urlConn != null) { 4442 urlConn.disconnect(); 4443 urlConn = null; 4444 } 4445 sleep(NET_ERROR_SLEEP_SEC); 4446 continue; 4447 } 4448 } 4449 log("isMobileOk: X loops|timed out result=" + result); 4450 return result; 4451 } catch (Exception e) { 4452 log("isMobileOk: Exception e=" + e); 4453 continue; 4454 } 4455 } 4456 log("isMobileOk: timed out"); 4457 } finally { 4458 log("isMobileOk: F stop hipri"); 4459 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 4460 mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4461 Phone.FEATURE_ENABLE_HIPRI); 4462 4463 // Wait for hipri to disconnect. 4464 long endTime = SystemClock.elapsedRealtime() + 5000; 4465 4466 while(SystemClock.elapsedRealtime() < endTime) { 4467 NetworkInfo.State state = mCs 4468 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4469 if (state != NetworkInfo.State.DISCONNECTED) { 4470 if (VDBG) { 4471 log("isMobileOk: connected ni=" + 4472 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4473 } 4474 sleep(POLLING_SLEEP_SEC); 4475 continue; 4476 } 4477 } 4478 4479 log("isMobileOk: X result=" + result); 4480 } 4481 return result; 4482 } 4483 4484 @Override 4485 protected Integer doInBackground(Params... params) { 4486 return isMobileOk(params[0]); 4487 } 4488 4489 @Override 4490 protected void onPostExecute(Integer result) { 4491 log("onPostExecute: result=" + result); 4492 if ((mParams != null) && (mParams.mCb != null)) { 4493 mParams.mCb.onComplete(result); 4494 } 4495 } 4496 4497 private String inetAddressesToString(InetAddress[] addresses) { 4498 StringBuffer sb = new StringBuffer(); 4499 boolean firstTime = true; 4500 for(InetAddress addr : addresses) { 4501 if (firstTime) { 4502 firstTime = false; 4503 } else { 4504 sb.append(","); 4505 } 4506 sb.append(addr); 4507 } 4508 return sb.toString(); 4509 } 4510 4511 private void printNetworkInfo() { 4512 boolean hasIccCard = mTm.hasIccCard(); 4513 int simState = mTm.getSimState(); 4514 log("hasIccCard=" + hasIccCard 4515 + " simState=" + simState); 4516 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 4517 if (ni != null) { 4518 log("ni.length=" + ni.length); 4519 for (NetworkInfo netInfo: ni) { 4520 log("netInfo=" + netInfo.toString()); 4521 } 4522 } else { 4523 log("no network info ni=null"); 4524 } 4525 } 4526 4527 /** 4528 * Sleep for a few seconds then return. 4529 * @param seconds 4530 */ 4531 private static void sleep(int seconds) { 4532 try { 4533 Thread.sleep(seconds * 1000); 4534 } catch (InterruptedException e) { 4535 e.printStackTrace(); 4536 } 4537 } 4538 4539 private static void log(String s) { 4540 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 4541 } 4542 } 4543 4544 // TODO: Move to ConnectivityManager and make public? 4545 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 4546 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 4547 4548 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 4549 @Override 4550 public void onReceive(Context context, Intent intent) { 4551 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 4552 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 4553 } 4554 } 4555 }; 4556 4557 private void handleMobileProvisioningAction(String url) { 4558 // Notication mark notification as not visible 4559 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4560 4561 // If provisioning network handle as a special case, 4562 // otherwise launch browser with the intent directly. 4563 NetworkInfo ni = getProvisioningNetworkInfo(); 4564 if ((ni != null) && ni.isConnectedToProvisioningNetwork()) { 4565 if (DBG) log("handleMobileProvisioningAction: on provisioning network"); 4566 MobileDataStateTracker mdst = (MobileDataStateTracker) 4567 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4568 mdst.enableMobileProvisioning(url); 4569 } else { 4570 if (DBG) log("handleMobileProvisioningAction: on default network"); 4571 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 4572 Intent.CATEGORY_APP_BROWSER); 4573 newIntent.setData(Uri.parse(url)); 4574 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4575 Intent.FLAG_ACTIVITY_NEW_TASK); 4576 try { 4577 mContext.startActivity(newIntent); 4578 } catch (ActivityNotFoundException e) { 4579 loge("handleMobileProvisioningAction: startActivity failed" + e); 4580 } 4581 } 4582 } 4583 4584 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 4585 private volatile boolean mIsNotificationVisible = false; 4586 4587 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 4588 String url) { 4589 if (DBG) { 4590 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 4591 + " extraInfo=" + extraInfo + " url=" + url); 4592 } 4593 4594 Resources r = Resources.getSystem(); 4595 NotificationManager notificationManager = (NotificationManager) mContext 4596 .getSystemService(Context.NOTIFICATION_SERVICE); 4597 4598 if (visible) { 4599 CharSequence title; 4600 CharSequence details; 4601 int icon; 4602 Intent intent; 4603 Notification notification = new Notification(); 4604 switch (networkType) { 4605 case ConnectivityManager.TYPE_WIFI: 4606 title = r.getString(R.string.wifi_available_sign_in, 0); 4607 details = r.getString(R.string.network_available_sign_in_detailed, 4608 extraInfo); 4609 icon = R.drawable.stat_notify_wifi_in_range; 4610 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4611 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4612 Intent.FLAG_ACTIVITY_NEW_TASK); 4613 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4614 break; 4615 case ConnectivityManager.TYPE_MOBILE: 4616 case ConnectivityManager.TYPE_MOBILE_HIPRI: 4617 title = r.getString(R.string.network_available_sign_in, 0); 4618 // TODO: Change this to pull from NetworkInfo once a printable 4619 // name has been added to it 4620 details = mTelephonyManager.getNetworkOperatorName(); 4621 icon = R.drawable.stat_notify_rssi_in_range; 4622 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 4623 intent.putExtra("EXTRA_URL", url); 4624 intent.setFlags(0); 4625 notification.contentIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 4626 break; 4627 default: 4628 title = r.getString(R.string.network_available_sign_in, 0); 4629 details = r.getString(R.string.network_available_sign_in_detailed, 4630 extraInfo); 4631 icon = R.drawable.stat_notify_rssi_in_range; 4632 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4633 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4634 Intent.FLAG_ACTIVITY_NEW_TASK); 4635 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4636 break; 4637 } 4638 4639 notification.when = 0; 4640 notification.icon = icon; 4641 notification.flags = Notification.FLAG_AUTO_CANCEL; 4642 notification.tickerText = title; 4643 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 4644 4645 try { 4646 notificationManager.notify(NOTIFICATION_ID, networkType, notification); 4647 } catch (NullPointerException npe) { 4648 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 4649 npe.printStackTrace(); 4650 } 4651 } else { 4652 try { 4653 notificationManager.cancel(NOTIFICATION_ID, networkType); 4654 } catch (NullPointerException npe) { 4655 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 4656 npe.printStackTrace(); 4657 } 4658 } 4659 mIsNotificationVisible = visible; 4660 } 4661 4662 /** Location to an updatable file listing carrier provisioning urls. 4663 * An example: 4664 * 4665 * <?xml version="1.0" encoding="utf-8"?> 4666 * <provisioningUrls> 4667 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 4668 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 4669 * </provisioningUrls> 4670 */ 4671 private static final String PROVISIONING_URL_PATH = 4672 "/data/misc/radio/provisioning_urls.xml"; 4673 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 4674 4675 /** XML tag for root element. */ 4676 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 4677 /** XML tag for individual url */ 4678 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 4679 /** XML tag for redirected url */ 4680 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 4681 /** XML attribute for mcc */ 4682 private static final String ATTR_MCC = "mcc"; 4683 /** XML attribute for mnc */ 4684 private static final String ATTR_MNC = "mnc"; 4685 4686 private static final int REDIRECTED_PROVISIONING = 1; 4687 private static final int PROVISIONING = 2; 4688 4689 private String getProvisioningUrlBaseFromFile(int type) { 4690 FileReader fileReader = null; 4691 XmlPullParser parser = null; 4692 Configuration config = mContext.getResources().getConfiguration(); 4693 String tagType; 4694 4695 switch (type) { 4696 case PROVISIONING: 4697 tagType = TAG_PROVISIONING_URL; 4698 break; 4699 case REDIRECTED_PROVISIONING: 4700 tagType = TAG_REDIRECTED_URL; 4701 break; 4702 default: 4703 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 4704 type); 4705 } 4706 4707 try { 4708 fileReader = new FileReader(mProvisioningUrlFile); 4709 parser = Xml.newPullParser(); 4710 parser.setInput(fileReader); 4711 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 4712 4713 while (true) { 4714 XmlUtils.nextElement(parser); 4715 4716 String element = parser.getName(); 4717 if (element == null) break; 4718 4719 if (element.equals(tagType)) { 4720 String mcc = parser.getAttributeValue(null, ATTR_MCC); 4721 try { 4722 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 4723 String mnc = parser.getAttributeValue(null, ATTR_MNC); 4724 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 4725 parser.next(); 4726 if (parser.getEventType() == XmlPullParser.TEXT) { 4727 return parser.getText(); 4728 } 4729 } 4730 } 4731 } catch (NumberFormatException e) { 4732 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 4733 } 4734 } 4735 } 4736 return null; 4737 } catch (FileNotFoundException e) { 4738 loge("Carrier Provisioning Urls file not found"); 4739 } catch (XmlPullParserException e) { 4740 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 4741 } catch (IOException e) { 4742 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 4743 } finally { 4744 if (fileReader != null) { 4745 try { 4746 fileReader.close(); 4747 } catch (IOException e) {} 4748 } 4749 } 4750 return null; 4751 } 4752 4753 @Override 4754 public String getMobileRedirectedProvisioningUrl() { 4755 enforceConnectivityInternalPermission(); 4756 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 4757 if (TextUtils.isEmpty(url)) { 4758 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 4759 } 4760 return url; 4761 } 4762 4763 @Override 4764 public String getMobileProvisioningUrl() { 4765 enforceConnectivityInternalPermission(); 4766 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 4767 if (TextUtils.isEmpty(url)) { 4768 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 4769 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 4770 } else { 4771 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 4772 } 4773 // populate the iccid, imei and phone number in the provisioning url. 4774 if (!TextUtils.isEmpty(url)) { 4775 String phoneNumber = mTelephonyManager.getLine1Number(); 4776 if (TextUtils.isEmpty(phoneNumber)) { 4777 phoneNumber = "0000000000"; 4778 } 4779 url = String.format(url, 4780 mTelephonyManager.getSimSerialNumber() /* ICCID */, 4781 mTelephonyManager.getDeviceId() /* IMEI */, 4782 phoneNumber /* Phone numer */); 4783 } 4784 4785 return url; 4786 } 4787 4788 @Override 4789 public void setProvisioningNotificationVisible(boolean visible, int networkType, 4790 String extraInfo, String url) { 4791 enforceConnectivityInternalPermission(); 4792 setProvNotificationVisible(visible, networkType, extraInfo, url); 4793 } 4794 4795 @Override 4796 public void setAirplaneMode(boolean enable) { 4797 enforceConnectivityInternalPermission(); 4798 final long ident = Binder.clearCallingIdentity(); 4799 try { 4800 final ContentResolver cr = mContext.getContentResolver(); 4801 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 4802 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 4803 intent.putExtra("state", enable); 4804 mContext.sendBroadcast(intent); 4805 } finally { 4806 Binder.restoreCallingIdentity(ident); 4807 } 4808 } 4809 4810 private void onUserStart(int userId) { 4811 synchronized(mVpns) { 4812 Vpn userVpn = mVpns.get(userId); 4813 if (userVpn != null) { 4814 loge("Starting user already has a VPN"); 4815 return; 4816 } 4817 userVpn = new Vpn(mContext, mVpnCallback, mNetd, this, userId); 4818 mVpns.put(userId, userVpn); 4819 userVpn.startMonitoring(mContext, mTrackerHandler); 4820 } 4821 } 4822 4823 private void onUserStop(int userId) { 4824 synchronized(mVpns) { 4825 Vpn userVpn = mVpns.get(userId); 4826 if (userVpn == null) { 4827 loge("Stopping user has no VPN"); 4828 return; 4829 } 4830 mVpns.delete(userId); 4831 } 4832 } 4833 4834 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 4835 @Override 4836 public void onReceive(Context context, Intent intent) { 4837 final String action = intent.getAction(); 4838 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 4839 if (userId == UserHandle.USER_NULL) return; 4840 4841 if (Intent.ACTION_USER_STARTING.equals(action)) { 4842 onUserStart(userId); 4843 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 4844 onUserStop(userId); 4845 } 4846 } 4847 }; 4848 4849 @Override 4850 public LinkQualityInfo getLinkQualityInfo(int networkType) { 4851 enforceAccessPermission(); 4852 if (isNetworkTypeValid(networkType)) { 4853 return mNetTrackers[networkType].getLinkQualityInfo(); 4854 } else { 4855 return null; 4856 } 4857 } 4858 4859 @Override 4860 public LinkQualityInfo getActiveLinkQualityInfo() { 4861 enforceAccessPermission(); 4862 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 4863 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 4864 } else { 4865 return null; 4866 } 4867 } 4868 4869 @Override 4870 public LinkQualityInfo[] getAllLinkQualityInfo() { 4871 enforceAccessPermission(); 4872 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 4873 for (NetworkStateTracker tracker : mNetTrackers) { 4874 if (tracker != null) { 4875 LinkQualityInfo li = tracker.getLinkQualityInfo(); 4876 if (li != null) { 4877 result.add(li); 4878 } 4879 } 4880 } 4881 4882 return result.toArray(new LinkQualityInfo[result.size()]); 4883 } 4884 4885 /* Infrastructure for network sampling */ 4886 4887 private void handleNetworkSamplingTimeout() { 4888 4889 log("Sampling interval elapsed, updating statistics .."); 4890 4891 // initialize list of interfaces .. 4892 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 4893 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 4894 for (NetworkStateTracker tracker : mNetTrackers) { 4895 if (tracker != null) { 4896 String ifaceName = tracker.getNetworkInterfaceName(); 4897 if (ifaceName != null) { 4898 mapIfaceToSample.put(ifaceName, null); 4899 } 4900 } 4901 } 4902 4903 // Read samples for all interfaces 4904 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 4905 4906 // process samples for all networks 4907 for (NetworkStateTracker tracker : mNetTrackers) { 4908 if (tracker != null) { 4909 String ifaceName = tracker.getNetworkInterfaceName(); 4910 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 4911 if (ss != null) { 4912 // end the previous sampling cycle 4913 tracker.stopSampling(ss); 4914 // start a new sampling cycle .. 4915 tracker.startSampling(ss); 4916 } 4917 } 4918 } 4919 4920 log("Done."); 4921 4922 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 4923 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 4924 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 4925 4926 if (DBG) log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 4927 4928 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 4929 } 4930 4931 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 4932 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 4933 mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, wakeupTime, intent); 4934 } 4935} 4936