ConnectivityService.java revision 32d1ac4d45c25180cb841664986398c7e23995e4
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.telephony.TelephonyIntents; 118import com.android.internal.util.IndentingPrintWriter; 119import com.android.internal.util.XmlUtils; 120import com.android.server.am.BatteryStatsService; 121import com.android.server.connectivity.DataConnectionStats; 122import com.android.server.connectivity.Nat464Xlat; 123import com.android.server.connectivity.PacManager; 124import com.android.server.connectivity.Tethering; 125import com.android.server.connectivity.Vpn; 126import com.android.server.net.BaseNetworkObserver; 127import com.android.server.net.LockdownVpnTracker; 128import com.google.android.collect.Lists; 129import com.google.android.collect.Sets; 130 131import dalvik.system.DexClassLoader; 132 133import org.xmlpull.v1.XmlPullParser; 134import org.xmlpull.v1.XmlPullParserException; 135 136import java.io.File; 137import java.io.FileDescriptor; 138import java.io.FileNotFoundException; 139import java.io.FileReader; 140import java.io.IOException; 141import java.io.PrintWriter; 142import java.lang.reflect.Constructor; 143import java.net.HttpURLConnection; 144import java.net.Inet4Address; 145import java.net.Inet6Address; 146import java.net.InetAddress; 147import java.net.URL; 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 = true; 173 174 private static final boolean LOGD_RULES = true; 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) { 1545 InetAddress inetAddress = NetworkUtils.intToInetAddress(hostAddress); 1546 1547 if (inetAddress == null) { 1548 return false; 1549 } 1550 1551 return requestRouteToHostAddress(networkType, inetAddress.getAddress()); 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 enforceChangePermission(); 1565 if (mProtectedNetworks.contains(networkType)) { 1566 enforceConnectivityInternalPermission(); 1567 } 1568 1569 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1570 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1571 return false; 1572 } 1573 NetworkStateTracker tracker = mNetTrackers[networkType]; 1574 DetailedState netState = DetailedState.DISCONNECTED; 1575 if (tracker != null) { 1576 netState = tracker.getNetworkInfo().getDetailedState(); 1577 } 1578 1579 if ((netState != DetailedState.CONNECTED && 1580 netState != DetailedState.CAPTIVE_PORTAL_CHECK) || 1581 tracker.isTeardownRequested()) { 1582 if (VDBG) { 1583 log("requestRouteToHostAddress on down network " 1584 + "(" + networkType + ") - dropped" 1585 + " tracker=" + tracker 1586 + " netState=" + netState 1587 + " isTeardownRequested=" 1588 + ((tracker != null) ? tracker.isTeardownRequested() : "tracker:null")); 1589 } 1590 return false; 1591 } 1592 final long token = Binder.clearCallingIdentity(); 1593 try { 1594 InetAddress addr = InetAddress.getByAddress(hostAddress); 1595 LinkProperties lp = tracker.getLinkProperties(); 1596 boolean ok = addRouteToAddress(lp, addr, EXEMPT); 1597 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1598 return ok; 1599 } catch (UnknownHostException e) { 1600 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1601 } finally { 1602 Binder.restoreCallingIdentity(token); 1603 } 1604 if (DBG) log("requestRouteToHostAddress X bottom return false"); 1605 return false; 1606 } 1607 1608 private boolean addRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, 1609 boolean exempt) { 1610 return modifyRoute(p, r, 0, ADD, toDefaultTable, exempt); 1611 } 1612 1613 private boolean removeRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable) { 1614 return modifyRoute(p, r, 0, REMOVE, toDefaultTable, UNEXEMPT); 1615 } 1616 1617 private boolean addRouteToAddress(LinkProperties lp, InetAddress addr, boolean exempt) { 1618 return modifyRouteToAddress(lp, addr, ADD, TO_DEFAULT_TABLE, exempt); 1619 } 1620 1621 private boolean removeRouteToAddress(LinkProperties lp, InetAddress addr) { 1622 return modifyRouteToAddress(lp, addr, REMOVE, TO_DEFAULT_TABLE, UNEXEMPT); 1623 } 1624 1625 private boolean modifyRouteToAddress(LinkProperties lp, InetAddress addr, boolean doAdd, 1626 boolean toDefaultTable, boolean exempt) { 1627 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1628 if (bestRoute == null) { 1629 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1630 } else { 1631 String iface = bestRoute.getInterface(); 1632 if (bestRoute.getGateway().equals(addr)) { 1633 // if there is no better route, add the implied hostroute for our gateway 1634 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1635 } else { 1636 // if we will connect to this through another route, add a direct route 1637 // to it's gateway 1638 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1639 } 1640 } 1641 return modifyRoute(lp, bestRoute, 0, doAdd, toDefaultTable, exempt); 1642 } 1643 1644 private boolean modifyRoute(LinkProperties lp, RouteInfo r, int cycleCount, boolean doAdd, 1645 boolean toDefaultTable, boolean exempt) { 1646 if ((lp == null) || (r == null)) { 1647 if (DBG) log("modifyRoute got unexpected null: " + lp + ", " + r); 1648 return false; 1649 } 1650 1651 if (cycleCount > MAX_HOSTROUTE_CYCLE_COUNT) { 1652 loge("Error modifying route - too much recursion"); 1653 return false; 1654 } 1655 1656 String ifaceName = r.getInterface(); 1657 if(ifaceName == null) { 1658 loge("Error modifying route - no interface name"); 1659 return false; 1660 } 1661 if (r.hasGateway()) { 1662 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), r.getGateway()); 1663 if (bestRoute != null) { 1664 if (bestRoute.getGateway().equals(r.getGateway())) { 1665 // if there is no better route, add the implied hostroute for our gateway 1666 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), ifaceName); 1667 } else { 1668 // if we will connect to our gateway through another route, add a direct 1669 // route to it's gateway 1670 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), 1671 bestRoute.getGateway(), 1672 ifaceName); 1673 } 1674 modifyRoute(lp, bestRoute, cycleCount+1, doAdd, toDefaultTable, exempt); 1675 } 1676 } 1677 if (doAdd) { 1678 if (VDBG) log("Adding " + r + " for interface " + ifaceName); 1679 try { 1680 if (toDefaultTable) { 1681 synchronized (mRoutesLock) { 1682 // only track default table - only one apps can effect 1683 mAddedRoutes.add(r); 1684 mNetd.addRoute(ifaceName, r); 1685 if (exempt) { 1686 LinkAddress dest = r.getDestination(); 1687 if (!mExemptAddresses.contains(dest)) { 1688 mNetd.setHostExemption(dest); 1689 mExemptAddresses.add(dest); 1690 } 1691 } 1692 } 1693 } else { 1694 mNetd.addSecondaryRoute(ifaceName, r); 1695 } 1696 } catch (Exception e) { 1697 // never crash - catch them all 1698 if (DBG) loge("Exception trying to add a route: " + e); 1699 return false; 1700 } 1701 } else { 1702 // if we remove this one and there are no more like it, then refcount==0 and 1703 // we can remove it from the table 1704 if (toDefaultTable) { 1705 synchronized (mRoutesLock) { 1706 mAddedRoutes.remove(r); 1707 if (mAddedRoutes.contains(r) == false) { 1708 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1709 try { 1710 mNetd.removeRoute(ifaceName, r); 1711 LinkAddress dest = r.getDestination(); 1712 if (mExemptAddresses.contains(dest)) { 1713 mNetd.clearHostExemption(dest); 1714 mExemptAddresses.remove(dest); 1715 } 1716 } catch (Exception e) { 1717 // never crash - catch them all 1718 if (VDBG) loge("Exception trying to remove a route: " + e); 1719 return false; 1720 } 1721 } else { 1722 if (VDBG) log("not removing " + r + " as it's still in use"); 1723 } 1724 } 1725 } else { 1726 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1727 try { 1728 mNetd.removeSecondaryRoute(ifaceName, r); 1729 } catch (Exception e) { 1730 // never crash - catch them all 1731 if (VDBG) loge("Exception trying to remove a route: " + e); 1732 return false; 1733 } 1734 } 1735 } 1736 return true; 1737 } 1738 1739 /** 1740 * @see ConnectivityManager#getMobileDataEnabled() 1741 */ 1742 public boolean getMobileDataEnabled() { 1743 // TODO: This detail should probably be in DataConnectionTracker's 1744 // which is where we store the value and maybe make this 1745 // asynchronous. 1746 enforceAccessPermission(); 1747 boolean retVal = Settings.Global.getInt(mContext.getContentResolver(), 1748 Settings.Global.MOBILE_DATA, 1) == 1; 1749 if (VDBG) log("getMobileDataEnabled returning " + retVal); 1750 return retVal; 1751 } 1752 1753 public void setDataDependency(int networkType, boolean met) { 1754 enforceConnectivityInternalPermission(); 1755 1756 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1757 (met ? ENABLED : DISABLED), networkType)); 1758 } 1759 1760 private void handleSetDependencyMet(int networkType, boolean met) { 1761 if (mNetTrackers[networkType] != null) { 1762 if (DBG) { 1763 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1764 } 1765 mNetTrackers[networkType].setDependencyMet(met); 1766 } 1767 } 1768 1769 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1770 @Override 1771 public void onUidRulesChanged(int uid, int uidRules) { 1772 // caller is NPMS, since we only register with them 1773 if (LOGD_RULES) { 1774 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1775 } 1776 1777 synchronized (mRulesLock) { 1778 // skip update when we've already applied rules 1779 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1780 if (oldRules == uidRules) return; 1781 1782 mUidRules.put(uid, uidRules); 1783 } 1784 1785 // TODO: notify UID when it has requested targeted updates 1786 } 1787 1788 @Override 1789 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1790 // caller is NPMS, since we only register with them 1791 if (LOGD_RULES) { 1792 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1793 } 1794 1795 synchronized (mRulesLock) { 1796 mMeteredIfaces.clear(); 1797 for (String iface : meteredIfaces) { 1798 mMeteredIfaces.add(iface); 1799 } 1800 } 1801 } 1802 1803 @Override 1804 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1805 // caller is NPMS, since we only register with them 1806 if (LOGD_RULES) { 1807 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1808 } 1809 1810 // kick off connectivity change broadcast for active network, since 1811 // global background policy change is radical. 1812 final int networkType = mActiveDefaultNetwork; 1813 if (isNetworkTypeValid(networkType)) { 1814 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1815 if (tracker != null) { 1816 final NetworkInfo info = tracker.getNetworkInfo(); 1817 if (info != null && info.isConnected()) { 1818 sendConnectedBroadcast(info); 1819 } 1820 } 1821 } 1822 } 1823 }; 1824 1825 /** 1826 * @see ConnectivityManager#setMobileDataEnabled(boolean) 1827 */ 1828 public void setMobileDataEnabled(boolean enabled) { 1829 enforceChangePermission(); 1830 if (DBG) log("setMobileDataEnabled(" + enabled + ")"); 1831 1832 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_MOBILE_DATA, 1833 (enabled ? ENABLED : DISABLED), 0)); 1834 } 1835 1836 private void handleSetMobileData(boolean enabled) { 1837 if (mNetTrackers[ConnectivityManager.TYPE_MOBILE] != null) { 1838 if (VDBG) { 1839 log(mNetTrackers[ConnectivityManager.TYPE_MOBILE].toString() + enabled); 1840 } 1841 mNetTrackers[ConnectivityManager.TYPE_MOBILE].setUserDataEnable(enabled); 1842 } 1843 if (mNetTrackers[ConnectivityManager.TYPE_WIMAX] != null) { 1844 if (VDBG) { 1845 log(mNetTrackers[ConnectivityManager.TYPE_WIMAX].toString() + enabled); 1846 } 1847 mNetTrackers[ConnectivityManager.TYPE_WIMAX].setUserDataEnable(enabled); 1848 } 1849 } 1850 1851 @Override 1852 public void setPolicyDataEnable(int networkType, boolean enabled) { 1853 // only someone like NPMS should only be calling us 1854 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1855 1856 mHandler.sendMessage(mHandler.obtainMessage( 1857 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1858 } 1859 1860 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1861 if (isNetworkTypeValid(networkType)) { 1862 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1863 if (tracker != null) { 1864 tracker.setPolicyDataEnable(enabled); 1865 } 1866 } 1867 } 1868 1869 private void enforceAccessPermission() { 1870 mContext.enforceCallingOrSelfPermission( 1871 android.Manifest.permission.ACCESS_NETWORK_STATE, 1872 "ConnectivityService"); 1873 } 1874 1875 private void enforceChangePermission() { 1876 mContext.enforceCallingOrSelfPermission( 1877 android.Manifest.permission.CHANGE_NETWORK_STATE, 1878 "ConnectivityService"); 1879 } 1880 1881 // TODO Make this a special check when it goes public 1882 private void enforceTetherChangePermission() { 1883 mContext.enforceCallingOrSelfPermission( 1884 android.Manifest.permission.CHANGE_NETWORK_STATE, 1885 "ConnectivityService"); 1886 } 1887 1888 private void enforceTetherAccessPermission() { 1889 mContext.enforceCallingOrSelfPermission( 1890 android.Manifest.permission.ACCESS_NETWORK_STATE, 1891 "ConnectivityService"); 1892 } 1893 1894 private void enforceConnectivityInternalPermission() { 1895 mContext.enforceCallingOrSelfPermission( 1896 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1897 "ConnectivityService"); 1898 } 1899 1900 private void enforceMarkNetworkSocketPermission() { 1901 //Media server special case 1902 if (Binder.getCallingUid() == Process.MEDIA_UID) { 1903 return; 1904 } 1905 mContext.enforceCallingOrSelfPermission( 1906 android.Manifest.permission.MARK_NETWORK_SOCKET, 1907 "ConnectivityService"); 1908 } 1909 1910 /** 1911 * Handle a {@code DISCONNECTED} event. If this pertains to the non-active 1912 * network, we ignore it. If it is for the active network, we send out a 1913 * broadcast. But first, we check whether it might be possible to connect 1914 * to a different network. 1915 * @param info the {@code NetworkInfo} for the network 1916 */ 1917 private void handleDisconnect(NetworkInfo info) { 1918 1919 int prevNetType = info.getType(); 1920 1921 mNetTrackers[prevNetType].setTeardownRequested(false); 1922 1923 // Remove idletimer previously setup in {@code handleConnect} 1924 removeDataActivityTracking(prevNetType); 1925 1926 /* 1927 * If the disconnected network is not the active one, then don't report 1928 * this as a loss of connectivity. What probably happened is that we're 1929 * getting the disconnect for a network that we explicitly disabled 1930 * in accordance with network preference policies. 1931 */ 1932 if (!mNetConfigs[prevNetType].isDefault()) { 1933 List<Integer> pids = mNetRequestersPids[prevNetType]; 1934 for (Integer pid : pids) { 1935 // will remove them because the net's no longer connected 1936 // need to do this now as only now do we know the pids and 1937 // can properly null things that are no longer referenced. 1938 reassessPidDns(pid.intValue(), false); 1939 } 1940 } 1941 1942 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 1943 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1944 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1945 if (info.isFailover()) { 1946 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1947 info.setFailover(false); 1948 } 1949 if (info.getReason() != null) { 1950 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1951 } 1952 if (info.getExtraInfo() != null) { 1953 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1954 info.getExtraInfo()); 1955 } 1956 1957 if (mNetConfigs[prevNetType].isDefault()) { 1958 tryFailover(prevNetType); 1959 if (mActiveDefaultNetwork != -1) { 1960 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 1961 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 1962 } else { 1963 mDefaultInetConditionPublished = 0; // we're not connected anymore 1964 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 1965 } 1966 } 1967 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1968 1969 // Reset interface if no other connections are using the same interface 1970 boolean doReset = true; 1971 LinkProperties linkProperties = mNetTrackers[prevNetType].getLinkProperties(); 1972 if (linkProperties != null) { 1973 String oldIface = linkProperties.getInterfaceName(); 1974 if (TextUtils.isEmpty(oldIface) == false) { 1975 for (NetworkStateTracker networkStateTracker : mNetTrackers) { 1976 if (networkStateTracker == null) continue; 1977 NetworkInfo networkInfo = networkStateTracker.getNetworkInfo(); 1978 if (networkInfo.isConnected() && networkInfo.getType() != prevNetType) { 1979 LinkProperties l = networkStateTracker.getLinkProperties(); 1980 if (l == null) continue; 1981 if (oldIface.equals(l.getInterfaceName())) { 1982 doReset = false; 1983 break; 1984 } 1985 } 1986 } 1987 } 1988 } 1989 1990 // do this before we broadcast the change 1991 handleConnectivityChange(prevNetType, doReset); 1992 1993 final Intent immediateIntent = new Intent(intent); 1994 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 1995 sendStickyBroadcast(immediateIntent); 1996 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 1997 /* 1998 * If the failover network is already connected, then immediately send 1999 * out a followup broadcast indicating successful failover 2000 */ 2001 if (mActiveDefaultNetwork != -1) { 2002 sendConnectedBroadcastDelayed(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(), 2003 getConnectivityChangeDelay()); 2004 } 2005 } 2006 2007 private void tryFailover(int prevNetType) { 2008 /* 2009 * If this is a default network, check if other defaults are available. 2010 * Try to reconnect on all available and let them hash it out when 2011 * more than one connects. 2012 */ 2013 if (mNetConfigs[prevNetType].isDefault()) { 2014 if (mActiveDefaultNetwork == prevNetType) { 2015 if (DBG) { 2016 log("tryFailover: set mActiveDefaultNetwork=-1, prevNetType=" + prevNetType); 2017 } 2018 mActiveDefaultNetwork = -1; 2019 } 2020 2021 // don't signal a reconnect for anything lower or equal priority than our 2022 // current connected default 2023 // TODO - don't filter by priority now - nice optimization but risky 2024// int currentPriority = -1; 2025// if (mActiveDefaultNetwork != -1) { 2026// currentPriority = mNetConfigs[mActiveDefaultNetwork].mPriority; 2027// } 2028 2029 for (int checkType=0; checkType <= ConnectivityManager.MAX_NETWORK_TYPE; checkType++) { 2030 if (checkType == prevNetType) continue; 2031 if (mNetConfigs[checkType] == null) continue; 2032 if (!mNetConfigs[checkType].isDefault()) continue; 2033 if (mNetTrackers[checkType] == null) continue; 2034 2035// Enabling the isAvailable() optimization caused mobile to not get 2036// selected if it was in the middle of error handling. Specifically 2037// a moble connection that took 30 seconds to complete the DEACTIVATE_DATA_CALL 2038// would not be available and we wouldn't get connected to anything. 2039// So removing the isAvailable() optimization below for now. TODO: This 2040// optimization should work and we need to investigate why it doesn't work. 2041// This could be related to how DEACTIVATE_DATA_CALL is reporting its 2042// complete before it is really complete. 2043 2044// if (!mNetTrackers[checkType].isAvailable()) continue; 2045 2046// if (currentPriority >= mNetConfigs[checkType].mPriority) continue; 2047 2048 NetworkStateTracker checkTracker = mNetTrackers[checkType]; 2049 NetworkInfo checkInfo = checkTracker.getNetworkInfo(); 2050 if (!checkInfo.isConnectedOrConnecting() || checkTracker.isTeardownRequested()) { 2051 checkInfo.setFailover(true); 2052 checkTracker.reconnect(); 2053 } 2054 if (DBG) log("Attempting to switch to " + checkInfo.getTypeName()); 2055 } 2056 } 2057 } 2058 2059 public void sendConnectedBroadcast(NetworkInfo info) { 2060 enforceConnectivityInternalPermission(); 2061 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2062 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 2063 } 2064 2065 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 2066 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2067 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 2068 } 2069 2070 private void sendInetConditionBroadcast(NetworkInfo info) { 2071 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 2072 } 2073 2074 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 2075 if (mLockdownTracker != null) { 2076 info = mLockdownTracker.augmentNetworkInfo(info); 2077 } 2078 2079 Intent intent = new Intent(bcastType); 2080 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2081 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2082 if (info.isFailover()) { 2083 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2084 info.setFailover(false); 2085 } 2086 if (info.getReason() != null) { 2087 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2088 } 2089 if (info.getExtraInfo() != null) { 2090 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2091 info.getExtraInfo()); 2092 } 2093 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2094 return intent; 2095 } 2096 2097 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 2098 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 2099 } 2100 2101 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 2102 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 2103 } 2104 2105 private void sendDataActivityBroadcast(int deviceType, boolean active) { 2106 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 2107 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 2108 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 2109 final long ident = Binder.clearCallingIdentity(); 2110 try { 2111 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 2112 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 2113 } finally { 2114 Binder.restoreCallingIdentity(ident); 2115 } 2116 } 2117 2118 /** 2119 * Called when an attempt to fail over to another network has failed. 2120 * @param info the {@link NetworkInfo} for the failed network 2121 */ 2122 private void handleConnectionFailure(NetworkInfo info) { 2123 mNetTrackers[info.getType()].setTeardownRequested(false); 2124 2125 String reason = info.getReason(); 2126 String extraInfo = info.getExtraInfo(); 2127 2128 String reasonText; 2129 if (reason == null) { 2130 reasonText = "."; 2131 } else { 2132 reasonText = " (" + reason + ")."; 2133 } 2134 loge("Attempt to connect to " + info.getTypeName() + " failed" + reasonText); 2135 2136 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 2137 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2138 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2139 if (getActiveNetworkInfo() == null) { 2140 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2141 } 2142 if (reason != null) { 2143 intent.putExtra(ConnectivityManager.EXTRA_REASON, reason); 2144 } 2145 if (extraInfo != null) { 2146 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, extraInfo); 2147 } 2148 if (info.isFailover()) { 2149 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2150 info.setFailover(false); 2151 } 2152 2153 if (mNetConfigs[info.getType()].isDefault()) { 2154 tryFailover(info.getType()); 2155 if (mActiveDefaultNetwork != -1) { 2156 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2157 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 2158 } else { 2159 mDefaultInetConditionPublished = 0; 2160 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2161 } 2162 } 2163 2164 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2165 2166 final Intent immediateIntent = new Intent(intent); 2167 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 2168 sendStickyBroadcast(immediateIntent); 2169 sendStickyBroadcast(intent); 2170 /* 2171 * If the failover network is already connected, then immediately send 2172 * out a followup broadcast indicating successful failover 2173 */ 2174 if (mActiveDefaultNetwork != -1) { 2175 sendConnectedBroadcast(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo()); 2176 } 2177 } 2178 2179 private void sendStickyBroadcast(Intent intent) { 2180 synchronized(this) { 2181 if (!mSystemReady) { 2182 mInitialBroadcast = new Intent(intent); 2183 } 2184 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2185 if (VDBG) { 2186 log("sendStickyBroadcast: action=" + intent.getAction()); 2187 } 2188 2189 final long ident = Binder.clearCallingIdentity(); 2190 try { 2191 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2192 } finally { 2193 Binder.restoreCallingIdentity(ident); 2194 } 2195 } 2196 } 2197 2198 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 2199 if (delayMs <= 0) { 2200 sendStickyBroadcast(intent); 2201 } else { 2202 if (VDBG) { 2203 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 2204 + intent.getAction()); 2205 } 2206 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2207 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 2208 } 2209 } 2210 2211 void systemReady() { 2212 mCaptivePortalTracker = CaptivePortalTracker.makeCaptivePortalTracker(mContext, this); 2213 loadGlobalProxy(); 2214 2215 synchronized(this) { 2216 mSystemReady = true; 2217 if (mInitialBroadcast != null) { 2218 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 2219 mInitialBroadcast = null; 2220 } 2221 } 2222 // load the global proxy at startup 2223 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 2224 2225 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 2226 // for user to unlock device. 2227 if (!updateLockdownVpn()) { 2228 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 2229 mContext.registerReceiver(mUserPresentReceiver, filter); 2230 } 2231 } 2232 2233 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 2234 @Override 2235 public void onReceive(Context context, Intent intent) { 2236 // Try creating lockdown tracker, since user present usually means 2237 // unlocked keystore. 2238 if (updateLockdownVpn()) { 2239 mContext.unregisterReceiver(this); 2240 } 2241 } 2242 }; 2243 2244 private boolean isNewNetTypePreferredOverCurrentNetType(int type) { 2245 if (((type != mNetworkPreference) 2246 && (mNetConfigs[mActiveDefaultNetwork].priority > mNetConfigs[type].priority)) 2247 || (mNetworkPreference == mActiveDefaultNetwork)) { 2248 return false; 2249 } 2250 return true; 2251 } 2252 2253 private void handleConnect(NetworkInfo info) { 2254 final int newNetType = info.getType(); 2255 2256 setupDataActivityTracking(newNetType); 2257 2258 // snapshot isFailover, because sendConnectedBroadcast() resets it 2259 boolean isFailover = info.isFailover(); 2260 final NetworkStateTracker thisNet = mNetTrackers[newNetType]; 2261 final String thisIface = thisNet.getLinkProperties().getInterfaceName(); 2262 2263 if (VDBG) { 2264 log("handleConnect: E newNetType=" + newNetType + " thisIface=" + thisIface 2265 + " isFailover" + isFailover); 2266 } 2267 2268 // if this is a default net and other default is running 2269 // kill the one not preferred 2270 if (mNetConfigs[newNetType].isDefault()) { 2271 if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != newNetType) { 2272 if (isNewNetTypePreferredOverCurrentNetType(newNetType)) { 2273 // tear down the other 2274 NetworkStateTracker otherNet = 2275 mNetTrackers[mActiveDefaultNetwork]; 2276 if (DBG) { 2277 log("Policy requires " + otherNet.getNetworkInfo().getTypeName() + 2278 " teardown"); 2279 } 2280 if (!teardown(otherNet)) { 2281 loge("Network declined teardown request"); 2282 teardown(thisNet); 2283 return; 2284 } 2285 } else { 2286 // don't accept this one 2287 if (VDBG) { 2288 log("Not broadcasting CONNECT_ACTION " + 2289 "to torn down network " + info.getTypeName()); 2290 } 2291 teardown(thisNet); 2292 return; 2293 } 2294 } 2295 synchronized (ConnectivityService.this) { 2296 // have a new default network, release the transition wakelock in a second 2297 // if it's held. The second pause is to allow apps to reconnect over the 2298 // new network 2299 if (mNetTransitionWakeLock.isHeld()) { 2300 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2301 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 2302 mNetTransitionWakeLockSerialNumber, 0), 2303 1000); 2304 } 2305 } 2306 mActiveDefaultNetwork = newNetType; 2307 // this will cause us to come up initially as unconnected and switching 2308 // to connected after our normal pause unless somebody reports us as reall 2309 // disconnected 2310 mDefaultInetConditionPublished = 0; 2311 mDefaultConnectionSequence++; 2312 mInetConditionChangeInFlight = false; 2313 // Don't do this - if we never sign in stay, grey 2314 //reportNetworkCondition(mActiveDefaultNetwork, 100); 2315 } 2316 thisNet.setTeardownRequested(false); 2317 updateNetworkSettings(thisNet); 2318 updateMtuSizeSettings(thisNet); 2319 handleConnectivityChange(newNetType, false); 2320 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 2321 2322 // notify battery stats service about this network 2323 if (thisIface != null) { 2324 try { 2325 BatteryStatsService.getService().noteNetworkInterfaceType(thisIface, newNetType); 2326 } catch (RemoteException e) { 2327 // ignored; service lives in system_server 2328 } 2329 } 2330 } 2331 2332 /** @hide */ 2333 @Override 2334 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 2335 enforceConnectivityInternalPermission(); 2336 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 2337 mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 2338 } 2339 2340 /** 2341 * Setup data activity tracking for the given network interface. 2342 * 2343 * Every {@code setupDataActivityTracking} should be paired with a 2344 * {@link removeDataActivityTracking} for cleanup. 2345 */ 2346 private void setupDataActivityTracking(int type) { 2347 final NetworkStateTracker thisNet = mNetTrackers[type]; 2348 final String iface = thisNet.getLinkProperties().getInterfaceName(); 2349 2350 final int timeout; 2351 2352 if (ConnectivityManager.isNetworkTypeMobile(type)) { 2353 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2354 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 2355 5); 2356 // Canonicalize mobile network type 2357 type = ConnectivityManager.TYPE_MOBILE; 2358 } else if (ConnectivityManager.TYPE_WIFI == type) { 2359 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2360 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 2361 0); 2362 } else { 2363 // do not track any other networks 2364 timeout = 0; 2365 } 2366 2367 if (timeout > 0 && iface != null) { 2368 try { 2369 mNetd.addIdleTimer(iface, timeout, Integer.toString(type)); 2370 } catch (RemoteException e) { 2371 } 2372 } 2373 } 2374 2375 /** 2376 * Remove data activity tracking when network disconnects. 2377 */ 2378 private void removeDataActivityTracking(int type) { 2379 final NetworkStateTracker net = mNetTrackers[type]; 2380 final String iface = net.getLinkProperties().getInterfaceName(); 2381 2382 if (iface != null && (ConnectivityManager.isNetworkTypeMobile(type) || 2383 ConnectivityManager.TYPE_WIFI == type)) { 2384 try { 2385 // the call fails silently if no idletimer setup for this interface 2386 mNetd.removeIdleTimer(iface); 2387 } catch (RemoteException e) { 2388 } 2389 } 2390 } 2391 2392 /** 2393 * After a change in the connectivity state of a network. We're mainly 2394 * concerned with making sure that the list of DNS servers is set up 2395 * according to which networks are connected, and ensuring that the 2396 * right routing table entries exist. 2397 */ 2398 private void handleConnectivityChange(int netType, boolean doReset) { 2399 int resetMask = doReset ? NetworkUtils.RESET_ALL_ADDRESSES : 0; 2400 boolean exempt = ConnectivityManager.isNetworkTypeExempt(netType); 2401 if (VDBG) { 2402 log("handleConnectivityChange: netType=" + netType + " doReset=" + doReset 2403 + " resetMask=" + resetMask); 2404 } 2405 2406 /* 2407 * If a non-default network is enabled, add the host routes that 2408 * will allow it's DNS servers to be accessed. 2409 */ 2410 handleDnsConfigurationChange(netType); 2411 2412 LinkProperties curLp = mCurrentLinkProperties[netType]; 2413 LinkProperties newLp = null; 2414 2415 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2416 newLp = mNetTrackers[netType].getLinkProperties(); 2417 if (VDBG) { 2418 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2419 " doReset=" + doReset + " resetMask=" + resetMask + 2420 "\n curLp=" + curLp + 2421 "\n newLp=" + newLp); 2422 } 2423 2424 if (curLp != null) { 2425 if (curLp.isIdenticalInterfaceName(newLp)) { 2426 CompareResult<LinkAddress> car = curLp.compareAddresses(newLp); 2427 if ((car.removed.size() != 0) || (car.added.size() != 0)) { 2428 for (LinkAddress linkAddr : car.removed) { 2429 if (linkAddr.getAddress() instanceof Inet4Address) { 2430 resetMask |= NetworkUtils.RESET_IPV4_ADDRESSES; 2431 } 2432 if (linkAddr.getAddress() instanceof Inet6Address) { 2433 resetMask |= NetworkUtils.RESET_IPV6_ADDRESSES; 2434 } 2435 } 2436 if (DBG) { 2437 log("handleConnectivityChange: addresses changed" + 2438 " linkProperty[" + netType + "]:" + " resetMask=" + resetMask + 2439 "\n car=" + car); 2440 } 2441 } else { 2442 if (VDBG) { 2443 log("handleConnectivityChange: addresses are the same reset per" + 2444 " doReset linkProperty[" + netType + "]:" + 2445 " resetMask=" + resetMask); 2446 } 2447 } 2448 } else { 2449 resetMask = NetworkUtils.RESET_ALL_ADDRESSES; 2450 if (DBG) { 2451 log("handleConnectivityChange: interface not not equivalent reset both" + 2452 " linkProperty[" + netType + "]:" + 2453 " resetMask=" + resetMask); 2454 } 2455 } 2456 } 2457 if (mNetConfigs[netType].isDefault()) { 2458 handleApplyDefaultProxy(newLp.getHttpProxy()); 2459 } 2460 } else { 2461 if (VDBG) { 2462 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2463 " doReset=" + doReset + " resetMask=" + resetMask + 2464 "\n curLp=" + curLp + 2465 "\n newLp= null"); 2466 } 2467 } 2468 mCurrentLinkProperties[netType] = newLp; 2469 boolean resetDns = updateRoutes(newLp, curLp, mNetConfigs[netType].isDefault(), exempt); 2470 2471 if (resetMask != 0 || resetDns) { 2472 if (VDBG) log("handleConnectivityChange: resetting"); 2473 if (curLp != null) { 2474 if (VDBG) log("handleConnectivityChange: resetting curLp=" + curLp); 2475 for (String iface : curLp.getAllInterfaceNames()) { 2476 if (TextUtils.isEmpty(iface) == false) { 2477 if (resetMask != 0) { 2478 if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")"); 2479 NetworkUtils.resetConnections(iface, resetMask); 2480 2481 // Tell VPN the interface is down. It is a temporary 2482 // but effective fix to make VPN aware of the change. 2483 if ((resetMask & NetworkUtils.RESET_IPV4_ADDRESSES) != 0) { 2484 synchronized(mVpns) { 2485 for (int i = 0; i < mVpns.size(); i++) { 2486 mVpns.valueAt(i).interfaceStatusChanged(iface, false); 2487 } 2488 } 2489 } 2490 } 2491 if (resetDns) { 2492 flushVmDnsCache(); 2493 if (VDBG) log("resetting DNS cache for " + iface); 2494 try { 2495 mNetd.flushInterfaceDnsCache(iface); 2496 } catch (Exception e) { 2497 // never crash - catch them all 2498 if (DBG) loge("Exception resetting dns cache: " + e); 2499 } 2500 } 2501 } else { 2502 loge("Can't reset connection for type "+netType); 2503 } 2504 } 2505 } 2506 } 2507 2508 // Update 464xlat state. 2509 NetworkStateTracker tracker = mNetTrackers[netType]; 2510 if (mClat.requiresClat(netType, tracker)) { 2511 2512 // If the connection was previously using clat, but is not using it now, stop the clat 2513 // daemon. Normally, this happens automatically when the connection disconnects, but if 2514 // the disconnect is not reported, or if the connection's LinkProperties changed for 2515 // some other reason (e.g., handoff changes the IP addresses on the link), it would 2516 // still be running. If it's not running, then stopping it is a no-op. 2517 if (Nat464Xlat.isRunningClat(curLp) && !Nat464Xlat.isRunningClat(newLp)) { 2518 mClat.stopClat(); 2519 } 2520 // If the link requires clat to be running, then start the daemon now. 2521 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2522 mClat.startClat(tracker); 2523 } else { 2524 mClat.stopClat(); 2525 } 2526 } 2527 2528 // TODO: Temporary notifying upstread change to Tethering. 2529 // @see bug/4455071 2530 /** Notify TetheringService if interface name has been changed. */ 2531 if (TextUtils.equals(mNetTrackers[netType].getNetworkInfo().getReason(), 2532 PhoneConstants.REASON_LINK_PROPERTIES_CHANGED)) { 2533 if (isTetheringSupported()) { 2534 mTethering.handleTetherIfaceChange(); 2535 } 2536 } 2537 } 2538 2539 /** 2540 * Add and remove routes using the old properties (null if not previously connected), 2541 * new properties (null if becoming disconnected). May even be double null, which 2542 * is a noop. 2543 * Uses isLinkDefault to determine if default routes should be set or conversely if 2544 * host routes should be set to the dns servers 2545 * returns a boolean indicating the routes changed 2546 */ 2547 private boolean updateRoutes(LinkProperties newLp, LinkProperties curLp, 2548 boolean isLinkDefault, boolean exempt) { 2549 Collection<RouteInfo> routesToAdd = null; 2550 CompareResult<InetAddress> dnsDiff = new CompareResult<InetAddress>(); 2551 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 2552 if (curLp != null) { 2553 // check for the delta between the current set and the new 2554 routeDiff = curLp.compareAllRoutes(newLp); 2555 dnsDiff = curLp.compareDnses(newLp); 2556 } else if (newLp != null) { 2557 routeDiff.added = newLp.getAllRoutes(); 2558 dnsDiff.added = newLp.getDnses(); 2559 } 2560 2561 boolean routesChanged = (routeDiff.removed.size() != 0 || routeDiff.added.size() != 0); 2562 2563 for (RouteInfo r : routeDiff.removed) { 2564 if (isLinkDefault || ! r.isDefaultRoute()) { 2565 if (VDBG) log("updateRoutes: default remove route r=" + r); 2566 removeRoute(curLp, r, TO_DEFAULT_TABLE); 2567 } 2568 if (isLinkDefault == false) { 2569 // remove from a secondary route table 2570 removeRoute(curLp, r, TO_SECONDARY_TABLE); 2571 } 2572 } 2573 2574 if (!isLinkDefault) { 2575 // handle DNS routes 2576 if (routesChanged) { 2577 // routes changed - remove all old dns entries and add new 2578 if (curLp != null) { 2579 for (InetAddress oldDns : curLp.getDnses()) { 2580 removeRouteToAddress(curLp, oldDns); 2581 } 2582 } 2583 if (newLp != null) { 2584 for (InetAddress newDns : newLp.getDnses()) { 2585 addRouteToAddress(newLp, newDns, exempt); 2586 } 2587 } 2588 } else { 2589 // no change in routes, check for change in dns themselves 2590 for (InetAddress oldDns : dnsDiff.removed) { 2591 removeRouteToAddress(curLp, oldDns); 2592 } 2593 for (InetAddress newDns : dnsDiff.added) { 2594 addRouteToAddress(newLp, newDns, exempt); 2595 } 2596 } 2597 } 2598 2599 for (RouteInfo r : routeDiff.added) { 2600 if (isLinkDefault || ! r.isDefaultRoute()) { 2601 addRoute(newLp, r, TO_DEFAULT_TABLE, exempt); 2602 } else { 2603 // add to a secondary route table 2604 addRoute(newLp, r, TO_SECONDARY_TABLE, UNEXEMPT); 2605 2606 // many radios add a default route even when we don't want one. 2607 // remove the default route unless somebody else has asked for it 2608 String ifaceName = newLp.getInterfaceName(); 2609 synchronized (mRoutesLock) { 2610 if (!TextUtils.isEmpty(ifaceName) && !mAddedRoutes.contains(r)) { 2611 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 2612 try { 2613 mNetd.removeRoute(ifaceName, r); 2614 } catch (Exception e) { 2615 // never crash - catch them all 2616 if (DBG) loge("Exception trying to remove a route: " + e); 2617 } 2618 } 2619 } 2620 } 2621 } 2622 2623 return routesChanged; 2624 } 2625 2626 /** 2627 * Reads the network specific MTU size from reources. 2628 * and set it on it's iface. 2629 */ 2630 private void updateMtuSizeSettings(NetworkStateTracker nt) { 2631 final String iface = nt.getLinkProperties().getInterfaceName(); 2632 final int mtu = nt.getLinkProperties().getMtu(); 2633 2634 if (mtu < 68 || mtu > 10000) { 2635 loge("Unexpected mtu value: " + mtu + ", " + nt); 2636 return; 2637 } 2638 2639 try { 2640 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 2641 mNetd.setMtu(iface, mtu); 2642 } catch (Exception e) { 2643 Slog.e(TAG, "exception in setMtu()" + e); 2644 } 2645 } 2646 2647 /** 2648 * Reads the network specific TCP buffer sizes from SystemProperties 2649 * net.tcp.buffersize.[default|wifi|umts|edge|gprs] and set them for system 2650 * wide use 2651 */ 2652 private void updateNetworkSettings(NetworkStateTracker nt) { 2653 String key = nt.getTcpBufferSizesPropName(); 2654 String bufferSizes = key == null ? null : SystemProperties.get(key); 2655 2656 if (TextUtils.isEmpty(bufferSizes)) { 2657 if (VDBG) log(key + " not found in system properties. Using defaults"); 2658 2659 // Setting to default values so we won't be stuck to previous values 2660 key = "net.tcp.buffersize.default"; 2661 bufferSizes = SystemProperties.get(key); 2662 } 2663 2664 // Set values in kernel 2665 if (bufferSizes.length() != 0) { 2666 if (VDBG) { 2667 log("Setting TCP values: [" + bufferSizes 2668 + "] which comes from [" + key + "]"); 2669 } 2670 setBufferSize(bufferSizes); 2671 } 2672 2673 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 2674 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 2675 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 2676 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 2677 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 2678 if (rwndValue != 0) { 2679 SystemProperties.set(sysctlKey, rwndValue.toString()); 2680 } 2681 } 2682 2683 /** 2684 * Writes TCP buffer sizes to /sys/kernel/ipv4/tcp_[r/w]mem_[min/def/max] 2685 * which maps to /proc/sys/net/ipv4/tcp_rmem and tcpwmem 2686 * 2687 * @param bufferSizes in the format of "readMin, readInitial, readMax, 2688 * writeMin, writeInitial, writeMax" 2689 */ 2690 private void setBufferSize(String bufferSizes) { 2691 try { 2692 String[] values = bufferSizes.split(","); 2693 2694 if (values.length == 6) { 2695 final String prefix = "/sys/kernel/ipv4/tcp_"; 2696 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 2697 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 2698 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 2699 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 2700 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 2701 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 2702 } else { 2703 loge("Invalid buffersize string: " + bufferSizes); 2704 } 2705 } catch (IOException e) { 2706 loge("Can't set tcp buffer sizes:" + e); 2707 } 2708 } 2709 2710 /** 2711 * Adjust the per-process dns entries (net.dns<x>.<pid>) based 2712 * on the highest priority active net which this process requested. 2713 * If there aren't any, clear it out 2714 */ 2715 private void reassessPidDns(int pid, boolean doBump) 2716 { 2717 if (VDBG) log("reassessPidDns for pid " + pid); 2718 Integer myPid = new Integer(pid); 2719 for(int i : mPriorityList) { 2720 if (mNetConfigs[i].isDefault()) { 2721 continue; 2722 } 2723 NetworkStateTracker nt = mNetTrackers[i]; 2724 if (nt.getNetworkInfo().isConnected() && 2725 !nt.isTeardownRequested()) { 2726 LinkProperties p = nt.getLinkProperties(); 2727 if (p == null) continue; 2728 if (mNetRequestersPids[i].contains(myPid)) { 2729 try { 2730 mNetd.setDnsInterfaceForPid(p.getInterfaceName(), pid); 2731 } catch (Exception e) { 2732 Slog.e(TAG, "exception reasseses pid dns: " + e); 2733 } 2734 return; 2735 } 2736 } 2737 } 2738 // nothing found - delete 2739 try { 2740 mNetd.clearDnsInterfaceForPid(pid); 2741 } catch (Exception e) { 2742 Slog.e(TAG, "exception clear interface from pid: " + e); 2743 } 2744 } 2745 2746 private void flushVmDnsCache() { 2747 /* 2748 * Tell the VMs to toss their DNS caches 2749 */ 2750 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 2751 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 2752 /* 2753 * Connectivity events can happen before boot has completed ... 2754 */ 2755 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2756 final long ident = Binder.clearCallingIdentity(); 2757 try { 2758 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 2759 } finally { 2760 Binder.restoreCallingIdentity(ident); 2761 } 2762 } 2763 2764 // Caller must grab mDnsLock. 2765 private void updateDnsLocked(String network, String iface, 2766 Collection<InetAddress> dnses, String domains, boolean defaultDns) { 2767 int last = 0; 2768 if (dnses.size() == 0 && mDefaultDns != null) { 2769 dnses = new ArrayList(); 2770 dnses.add(mDefaultDns); 2771 if (DBG) { 2772 loge("no dns provided for " + network + " - using " + mDefaultDns.getHostAddress()); 2773 } 2774 } 2775 2776 try { 2777 mNetd.setDnsServersForInterface(iface, NetworkUtils.makeStrings(dnses), domains); 2778 if (defaultDns) { 2779 mNetd.setDefaultInterfaceForDns(iface); 2780 } 2781 2782 for (InetAddress dns : dnses) { 2783 ++last; 2784 String key = "net.dns" + last; 2785 String value = dns.getHostAddress(); 2786 SystemProperties.set(key, value); 2787 } 2788 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 2789 String key = "net.dns" + i; 2790 SystemProperties.set(key, ""); 2791 } 2792 mNumDnsEntries = last; 2793 } catch (Exception e) { 2794 loge("exception setting default dns interface: " + e); 2795 } 2796 } 2797 2798 private void handleDnsConfigurationChange(int netType) { 2799 // add default net's dns entries 2800 NetworkStateTracker nt = mNetTrackers[netType]; 2801 if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) { 2802 LinkProperties p = nt.getLinkProperties(); 2803 if (p == null) return; 2804 Collection<InetAddress> dnses = p.getDnses(); 2805 if (mNetConfigs[netType].isDefault()) { 2806 String network = nt.getNetworkInfo().getTypeName(); 2807 synchronized (mDnsLock) { 2808 updateDnsLocked(network, p.getInterfaceName(), dnses, p.getDomains(), true); 2809 } 2810 } else { 2811 try { 2812 mNetd.setDnsServersForInterface(p.getInterfaceName(), 2813 NetworkUtils.makeStrings(dnses), p.getDomains()); 2814 } catch (Exception e) { 2815 if (DBG) loge("exception setting dns servers: " + e); 2816 } 2817 // set per-pid dns for attached secondary nets 2818 List<Integer> pids = mNetRequestersPids[netType]; 2819 for (Integer pid : pids) { 2820 try { 2821 mNetd.setDnsInterfaceForPid(p.getInterfaceName(), pid); 2822 } catch (Exception e) { 2823 Slog.e(TAG, "exception setting interface for pid: " + e); 2824 } 2825 } 2826 } 2827 flushVmDnsCache(); 2828 } 2829 } 2830 2831 private int getRestoreDefaultNetworkDelay(int networkType) { 2832 String restoreDefaultNetworkDelayStr = SystemProperties.get( 2833 NETWORK_RESTORE_DELAY_PROP_NAME); 2834 if(restoreDefaultNetworkDelayStr != null && 2835 restoreDefaultNetworkDelayStr.length() != 0) { 2836 try { 2837 return Integer.valueOf(restoreDefaultNetworkDelayStr); 2838 } catch (NumberFormatException e) { 2839 } 2840 } 2841 // if the system property isn't set, use the value for the apn type 2842 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 2843 2844 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 2845 (mNetConfigs[networkType] != null)) { 2846 ret = mNetConfigs[networkType].restoreTime; 2847 } 2848 return ret; 2849 } 2850 2851 @Override 2852 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 2853 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 2854 if (mContext.checkCallingOrSelfPermission( 2855 android.Manifest.permission.DUMP) 2856 != PackageManager.PERMISSION_GRANTED) { 2857 pw.println("Permission Denial: can't dump ConnectivityService " + 2858 "from from pid=" + Binder.getCallingPid() + ", uid=" + 2859 Binder.getCallingUid()); 2860 return; 2861 } 2862 2863 // TODO: add locking to get atomic snapshot 2864 pw.println(); 2865 for (int i = 0; i < mNetTrackers.length; i++) { 2866 final NetworkStateTracker nst = mNetTrackers[i]; 2867 if (nst != null) { 2868 pw.println("NetworkStateTracker for " + getNetworkTypeName(i) + ":"); 2869 pw.increaseIndent(); 2870 if (nst.getNetworkInfo().isConnected()) { 2871 pw.println("Active network: " + nst.getNetworkInfo(). 2872 getTypeName()); 2873 } 2874 pw.println(nst.getNetworkInfo()); 2875 pw.println(nst.getLinkProperties()); 2876 pw.println(nst); 2877 pw.println(); 2878 pw.decreaseIndent(); 2879 } 2880 } 2881 2882 pw.println("Network Requester Pids:"); 2883 pw.increaseIndent(); 2884 for (int net : mPriorityList) { 2885 String pidString = net + ": "; 2886 for (Integer pid : mNetRequestersPids[net]) { 2887 pidString = pidString + pid.toString() + ", "; 2888 } 2889 pw.println(pidString); 2890 } 2891 pw.println(); 2892 pw.decreaseIndent(); 2893 2894 pw.println("FeatureUsers:"); 2895 pw.increaseIndent(); 2896 for (Object requester : mFeatureUsers) { 2897 pw.println(requester.toString()); 2898 } 2899 pw.println(); 2900 pw.decreaseIndent(); 2901 2902 synchronized (this) { 2903 pw.println("NetworkTranstionWakeLock is currently " + 2904 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 2905 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 2906 } 2907 pw.println(); 2908 2909 mTethering.dump(fd, pw, args); 2910 2911 if (mInetLog != null) { 2912 pw.println(); 2913 pw.println("Inet condition reports:"); 2914 pw.increaseIndent(); 2915 for(int i = 0; i < mInetLog.size(); i++) { 2916 pw.println(mInetLog.get(i)); 2917 } 2918 pw.decreaseIndent(); 2919 } 2920 } 2921 2922 // must be stateless - things change under us. 2923 private class NetworkStateTrackerHandler extends Handler { 2924 public NetworkStateTrackerHandler(Looper looper) { 2925 super(looper); 2926 } 2927 2928 @Override 2929 public void handleMessage(Message msg) { 2930 NetworkInfo info; 2931 switch (msg.what) { 2932 case NetworkStateTracker.EVENT_STATE_CHANGED: { 2933 info = (NetworkInfo) msg.obj; 2934 NetworkInfo.State state = info.getState(); 2935 2936 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 2937 (state == NetworkInfo.State.DISCONNECTED) || 2938 (state == NetworkInfo.State.SUSPENDED)) { 2939 log("ConnectivityChange for " + 2940 info.getTypeName() + ": " + 2941 state + "/" + info.getDetailedState()); 2942 } 2943 2944 // Since mobile has the notion of a network/apn that can be used for 2945 // provisioning we need to check every time we're connected as 2946 // CaptiveProtalTracker won't detected it because DCT doesn't report it 2947 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 2948 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 2949 // is received by MDST and sent here as EVENT_STATE_CHANGED. 2950 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 2951 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 2952 Settings.Global.DEVICE_PROVISIONED, 0)) 2953 && (((state == NetworkInfo.State.CONNECTED) 2954 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 2955 || info.isConnectedToProvisioningNetwork())) { 2956 log("ConnectivityChange checkMobileProvisioning for" 2957 + " TYPE_MOBILE or ProvisioningNetwork"); 2958 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 2959 } 2960 2961 EventLogTags.writeConnectivityStateChanged( 2962 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 2963 2964 if (info.getDetailedState() == 2965 NetworkInfo.DetailedState.FAILED) { 2966 handleConnectionFailure(info); 2967 } else if (info.isConnectedToProvisioningNetwork()) { 2968 /** 2969 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 2970 * for now its an in between network, its a network that 2971 * is actually a default network but we don't want it to be 2972 * announced as such to keep background applications from 2973 * trying to use it. It turns out that some still try so we 2974 * take the additional step of clearing any default routes 2975 * to the link that may have incorrectly setup by the lower 2976 * levels. 2977 */ 2978 LinkProperties lp = getLinkProperties(info.getType()); 2979 if (DBG) { 2980 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 2981 } 2982 2983 // Clear any default routes setup by the radio so 2984 // any activity by applications trying to use this 2985 // connection will fail until the provisioning network 2986 // is enabled. 2987 for (RouteInfo r : lp.getRoutes()) { 2988 removeRoute(lp, r, TO_DEFAULT_TABLE); 2989 } 2990 } else if (state == NetworkInfo.State.DISCONNECTED) { 2991 handleDisconnect(info); 2992 } else if (state == NetworkInfo.State.SUSPENDED) { 2993 // TODO: need to think this over. 2994 // the logic here is, handle SUSPENDED the same as 2995 // DISCONNECTED. The only difference being we are 2996 // broadcasting an intent with NetworkInfo that's 2997 // suspended. This allows the applications an 2998 // opportunity to handle DISCONNECTED and SUSPENDED 2999 // differently, or not. 3000 handleDisconnect(info); 3001 } else if (state == NetworkInfo.State.CONNECTED) { 3002 handleConnect(info); 3003 } 3004 if (mLockdownTracker != null) { 3005 mLockdownTracker.onNetworkInfoChanged(info); 3006 } 3007 break; 3008 } 3009 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 3010 info = (NetworkInfo) msg.obj; 3011 // TODO: Temporary allowing network configuration 3012 // change not resetting sockets. 3013 // @see bug/4455071 3014 handleConnectivityChange(info.getType(), false); 3015 break; 3016 } 3017 case NetworkStateTracker.EVENT_NETWORK_SUBTYPE_CHANGED: { 3018 info = (NetworkInfo) msg.obj; 3019 int type = info.getType(); 3020 updateNetworkSettings(mNetTrackers[type]); 3021 break; 3022 } 3023 } 3024 } 3025 } 3026 3027 private class InternalHandler extends Handler { 3028 public InternalHandler(Looper looper) { 3029 super(looper); 3030 } 3031 3032 @Override 3033 public void handleMessage(Message msg) { 3034 NetworkInfo info; 3035 switch (msg.what) { 3036 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 3037 String causedBy = null; 3038 synchronized (ConnectivityService.this) { 3039 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 3040 mNetTransitionWakeLock.isHeld()) { 3041 mNetTransitionWakeLock.release(); 3042 causedBy = mNetTransitionWakeLockCausedBy; 3043 } 3044 } 3045 if (causedBy != null) { 3046 log("NetTransition Wakelock for " + causedBy + " released by timeout"); 3047 } 3048 break; 3049 } 3050 case EVENT_RESTORE_DEFAULT_NETWORK: { 3051 FeatureUser u = (FeatureUser)msg.obj; 3052 u.expire(); 3053 break; 3054 } 3055 case EVENT_INET_CONDITION_CHANGE: { 3056 int netType = msg.arg1; 3057 int condition = msg.arg2; 3058 handleInetConditionChange(netType, condition); 3059 break; 3060 } 3061 case EVENT_INET_CONDITION_HOLD_END: { 3062 int netType = msg.arg1; 3063 int sequence = msg.arg2; 3064 handleInetConditionHoldEnd(netType, sequence); 3065 break; 3066 } 3067 case EVENT_SET_NETWORK_PREFERENCE: { 3068 int preference = msg.arg1; 3069 handleSetNetworkPreference(preference); 3070 break; 3071 } 3072 case EVENT_SET_MOBILE_DATA: { 3073 boolean enabled = (msg.arg1 == ENABLED); 3074 handleSetMobileData(enabled); 3075 break; 3076 } 3077 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 3078 handleDeprecatedGlobalHttpProxy(); 3079 break; 3080 } 3081 case EVENT_SET_DEPENDENCY_MET: { 3082 boolean met = (msg.arg1 == ENABLED); 3083 handleSetDependencyMet(msg.arg2, met); 3084 break; 3085 } 3086 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 3087 Intent intent = (Intent)msg.obj; 3088 sendStickyBroadcast(intent); 3089 break; 3090 } 3091 case EVENT_SET_POLICY_DATA_ENABLE: { 3092 final int networkType = msg.arg1; 3093 final boolean enabled = msg.arg2 == ENABLED; 3094 handleSetPolicyDataEnable(networkType, enabled); 3095 break; 3096 } 3097 case EVENT_VPN_STATE_CHANGED: { 3098 if (mLockdownTracker != null) { 3099 mLockdownTracker.onVpnStateChanged((NetworkInfo) msg.obj); 3100 } 3101 break; 3102 } 3103 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 3104 int tag = mEnableFailFastMobileDataTag.get(); 3105 if (msg.arg1 == tag) { 3106 MobileDataStateTracker mobileDst = 3107 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3108 if (mobileDst != null) { 3109 mobileDst.setEnableFailFastMobileData(msg.arg2); 3110 } 3111 } else { 3112 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 3113 + " != tag:" + tag); 3114 } 3115 break; 3116 } 3117 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 3118 handleNetworkSamplingTimeout(); 3119 break; 3120 } 3121 case EVENT_PROXY_HAS_CHANGED: { 3122 handleApplyDefaultProxy((ProxyProperties)msg.obj); 3123 break; 3124 } 3125 } 3126 } 3127 } 3128 3129 // javadoc from interface 3130 public int tether(String iface) { 3131 enforceTetherChangePermission(); 3132 3133 if (isTetheringSupported()) { 3134 return mTethering.tether(iface); 3135 } else { 3136 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3137 } 3138 } 3139 3140 // javadoc from interface 3141 public int untether(String iface) { 3142 enforceTetherChangePermission(); 3143 3144 if (isTetheringSupported()) { 3145 return mTethering.untether(iface); 3146 } else { 3147 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3148 } 3149 } 3150 3151 // javadoc from interface 3152 public int getLastTetherError(String iface) { 3153 enforceTetherAccessPermission(); 3154 3155 if (isTetheringSupported()) { 3156 return mTethering.getLastTetherError(iface); 3157 } else { 3158 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3159 } 3160 } 3161 3162 // TODO - proper iface API for selection by property, inspection, etc 3163 public String[] getTetherableUsbRegexs() { 3164 enforceTetherAccessPermission(); 3165 if (isTetheringSupported()) { 3166 return mTethering.getTetherableUsbRegexs(); 3167 } else { 3168 return new String[0]; 3169 } 3170 } 3171 3172 public String[] getTetherableWifiRegexs() { 3173 enforceTetherAccessPermission(); 3174 if (isTetheringSupported()) { 3175 return mTethering.getTetherableWifiRegexs(); 3176 } else { 3177 return new String[0]; 3178 } 3179 } 3180 3181 public String[] getTetherableBluetoothRegexs() { 3182 enforceTetherAccessPermission(); 3183 if (isTetheringSupported()) { 3184 return mTethering.getTetherableBluetoothRegexs(); 3185 } else { 3186 return new String[0]; 3187 } 3188 } 3189 3190 public int setUsbTethering(boolean enable) { 3191 enforceTetherChangePermission(); 3192 if (isTetheringSupported()) { 3193 return mTethering.setUsbTethering(enable); 3194 } else { 3195 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3196 } 3197 } 3198 3199 // TODO - move iface listing, queries, etc to new module 3200 // javadoc from interface 3201 public String[] getTetherableIfaces() { 3202 enforceTetherAccessPermission(); 3203 return mTethering.getTetherableIfaces(); 3204 } 3205 3206 public String[] getTetheredIfaces() { 3207 enforceTetherAccessPermission(); 3208 return mTethering.getTetheredIfaces(); 3209 } 3210 3211 public String[] getTetheringErroredIfaces() { 3212 enforceTetherAccessPermission(); 3213 return mTethering.getErroredIfaces(); 3214 } 3215 3216 // if ro.tether.denied = true we default to no tethering 3217 // gservices could set the secure setting to 1 though to enable it on a build where it 3218 // had previously been turned off. 3219 public boolean isTetheringSupported() { 3220 enforceTetherAccessPermission(); 3221 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 3222 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 3223 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0); 3224 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 3225 mTethering.getTetherableWifiRegexs().length != 0 || 3226 mTethering.getTetherableBluetoothRegexs().length != 0) && 3227 mTethering.getUpstreamIfaceTypes().length != 0); 3228 } 3229 3230 // An API NetworkStateTrackers can call when they lose their network. 3231 // This will automatically be cleared after X seconds or a network becomes CONNECTED, 3232 // whichever happens first. The timer is started by the first caller and not 3233 // restarted by subsequent callers. 3234 public void requestNetworkTransitionWakelock(String forWhom) { 3235 enforceConnectivityInternalPermission(); 3236 synchronized (this) { 3237 if (mNetTransitionWakeLock.isHeld()) return; 3238 mNetTransitionWakeLockSerialNumber++; 3239 mNetTransitionWakeLock.acquire(); 3240 mNetTransitionWakeLockCausedBy = forWhom; 3241 } 3242 mHandler.sendMessageDelayed(mHandler.obtainMessage( 3243 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 3244 mNetTransitionWakeLockSerialNumber, 0), 3245 mNetTransitionWakeLockTimeout); 3246 return; 3247 } 3248 3249 // 100 percent is full good, 0 is full bad. 3250 public void reportInetCondition(int networkType, int percentage) { 3251 if (VDBG) log("reportNetworkCondition(" + networkType + ", " + percentage + ")"); 3252 mContext.enforceCallingOrSelfPermission( 3253 android.Manifest.permission.STATUS_BAR, 3254 "ConnectivityService"); 3255 3256 if (DBG) { 3257 int pid = getCallingPid(); 3258 int uid = getCallingUid(); 3259 String s = pid + "(" + uid + ") reports inet is " + 3260 (percentage > 50 ? "connected" : "disconnected") + " (" + percentage + ") on " + 3261 "network Type " + networkType + " at " + GregorianCalendar.getInstance().getTime(); 3262 mInetLog.add(s); 3263 while(mInetLog.size() > INET_CONDITION_LOG_MAX_SIZE) { 3264 mInetLog.remove(0); 3265 } 3266 } 3267 mHandler.sendMessage(mHandler.obtainMessage( 3268 EVENT_INET_CONDITION_CHANGE, networkType, percentage)); 3269 } 3270 3271 private void handleInetConditionChange(int netType, int condition) { 3272 if (mActiveDefaultNetwork == -1) { 3273 if (DBG) log("handleInetConditionChange: no active default network - ignore"); 3274 return; 3275 } 3276 if (mActiveDefaultNetwork != netType) { 3277 if (DBG) log("handleInetConditionChange: net=" + netType + 3278 " != default=" + mActiveDefaultNetwork + " - ignore"); 3279 return; 3280 } 3281 if (VDBG) { 3282 log("handleInetConditionChange: net=" + 3283 netType + ", condition=" + condition + 3284 ",mActiveDefaultNetwork=" + mActiveDefaultNetwork); 3285 } 3286 mDefaultInetCondition = condition; 3287 int delay; 3288 if (mInetConditionChangeInFlight == false) { 3289 if (VDBG) log("handleInetConditionChange: starting a change hold"); 3290 // setup a new hold to debounce this 3291 if (mDefaultInetCondition > 50) { 3292 delay = Settings.Global.getInt(mContext.getContentResolver(), 3293 Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY, 500); 3294 } else { 3295 delay = Settings.Global.getInt(mContext.getContentResolver(), 3296 Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 3000); 3297 } 3298 mInetConditionChangeInFlight = true; 3299 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_INET_CONDITION_HOLD_END, 3300 mActiveDefaultNetwork, mDefaultConnectionSequence), delay); 3301 } else { 3302 // we've set the new condition, when this hold ends that will get picked up 3303 if (VDBG) log("handleInetConditionChange: currently in hold - not setting new end evt"); 3304 } 3305 } 3306 3307 private void handleInetConditionHoldEnd(int netType, int sequence) { 3308 if (DBG) { 3309 log("handleInetConditionHoldEnd: net=" + netType + 3310 ", condition=" + mDefaultInetCondition + 3311 ", published condition=" + mDefaultInetConditionPublished); 3312 } 3313 mInetConditionChangeInFlight = false; 3314 3315 if (mActiveDefaultNetwork == -1) { 3316 if (DBG) log("handleInetConditionHoldEnd: no active default network - ignoring"); 3317 return; 3318 } 3319 if (mDefaultConnectionSequence != sequence) { 3320 if (DBG) log("handleInetConditionHoldEnd: event hold for obsolete network - ignoring"); 3321 return; 3322 } 3323 // TODO: Figure out why this optimization sometimes causes a 3324 // change in mDefaultInetCondition to be missed and the 3325 // UI to not be updated. 3326 //if (mDefaultInetConditionPublished == mDefaultInetCondition) { 3327 // if (DBG) log("no change in condition - aborting"); 3328 // return; 3329 //} 3330 NetworkInfo networkInfo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 3331 if (networkInfo.isConnected() == false) { 3332 if (DBG) log("handleInetConditionHoldEnd: default network not connected - ignoring"); 3333 return; 3334 } 3335 mDefaultInetConditionPublished = mDefaultInetCondition; 3336 sendInetConditionBroadcast(networkInfo); 3337 return; 3338 } 3339 3340 public ProxyProperties getProxy() { 3341 // this information is already available as a world read/writable jvm property 3342 // so this API change wouldn't have a benifit. It also breaks the passing 3343 // of proxy info to all the JVMs. 3344 // enforceAccessPermission(); 3345 synchronized (mProxyLock) { 3346 ProxyProperties ret = mGlobalProxy; 3347 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 3348 return ret; 3349 } 3350 } 3351 3352 public void setGlobalProxy(ProxyProperties proxyProperties) { 3353 enforceConnectivityInternalPermission(); 3354 3355 synchronized (mProxyLock) { 3356 if (proxyProperties == mGlobalProxy) return; 3357 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 3358 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 3359 3360 String host = ""; 3361 int port = 0; 3362 String exclList = ""; 3363 String pacFileUrl = ""; 3364 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 3365 !TextUtils.isEmpty(proxyProperties.getPacFileUrl()))) { 3366 if (!proxyProperties.isValid()) { 3367 if (DBG) 3368 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3369 return; 3370 } 3371 mGlobalProxy = new ProxyProperties(proxyProperties); 3372 host = mGlobalProxy.getHost(); 3373 port = mGlobalProxy.getPort(); 3374 exclList = mGlobalProxy.getExclusionList(); 3375 if (proxyProperties.getPacFileUrl() != null) { 3376 pacFileUrl = proxyProperties.getPacFileUrl(); 3377 } 3378 } else { 3379 mGlobalProxy = null; 3380 } 3381 ContentResolver res = mContext.getContentResolver(); 3382 final long token = Binder.clearCallingIdentity(); 3383 try { 3384 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 3385 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 3386 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 3387 exclList); 3388 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 3389 } finally { 3390 Binder.restoreCallingIdentity(token); 3391 } 3392 } 3393 3394 if (mGlobalProxy == null) { 3395 proxyProperties = mDefaultProxy; 3396 } 3397 sendProxyBroadcast(proxyProperties); 3398 } 3399 3400 private void loadGlobalProxy() { 3401 ContentResolver res = mContext.getContentResolver(); 3402 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 3403 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 3404 String exclList = Settings.Global.getString(res, 3405 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 3406 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 3407 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 3408 ProxyProperties proxyProperties; 3409 if (!TextUtils.isEmpty(pacFileUrl)) { 3410 proxyProperties = new ProxyProperties(pacFileUrl); 3411 } else { 3412 proxyProperties = new ProxyProperties(host, port, exclList); 3413 } 3414 if (!proxyProperties.isValid()) { 3415 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3416 return; 3417 } 3418 3419 synchronized (mProxyLock) { 3420 mGlobalProxy = proxyProperties; 3421 } 3422 } 3423 } 3424 3425 public ProxyProperties getGlobalProxy() { 3426 // this information is already available as a world read/writable jvm property 3427 // so this API change wouldn't have a benifit. It also breaks the passing 3428 // of proxy info to all the JVMs. 3429 // enforceAccessPermission(); 3430 synchronized (mProxyLock) { 3431 return mGlobalProxy; 3432 } 3433 } 3434 3435 private void handleApplyDefaultProxy(ProxyProperties proxy) { 3436 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3437 && TextUtils.isEmpty(proxy.getPacFileUrl())) { 3438 proxy = null; 3439 } 3440 synchronized (mProxyLock) { 3441 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3442 if (mDefaultProxy == proxy) return; // catches repeated nulls 3443 if (proxy != null && !proxy.isValid()) { 3444 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3445 return; 3446 } 3447 mDefaultProxy = proxy; 3448 3449 if (mGlobalProxy != null) return; 3450 if (!mDefaultProxyDisabled) { 3451 sendProxyBroadcast(proxy); 3452 } 3453 } 3454 } 3455 3456 private void handleDeprecatedGlobalHttpProxy() { 3457 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3458 Settings.Global.HTTP_PROXY); 3459 if (!TextUtils.isEmpty(proxy)) { 3460 String data[] = proxy.split(":"); 3461 if (data.length == 0) { 3462 return; 3463 } 3464 3465 String proxyHost = data[0]; 3466 int proxyPort = 8080; 3467 if (data.length > 1) { 3468 try { 3469 proxyPort = Integer.parseInt(data[1]); 3470 } catch (NumberFormatException e) { 3471 return; 3472 } 3473 } 3474 ProxyProperties p = new ProxyProperties(data[0], proxyPort, ""); 3475 setGlobalProxy(p); 3476 } 3477 } 3478 3479 private void sendProxyBroadcast(ProxyProperties proxy) { 3480 if (proxy == null) proxy = new ProxyProperties("", 0, ""); 3481 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3482 if (DBG) log("sending Proxy Broadcast for " + proxy); 3483 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3484 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3485 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3486 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3487 final long ident = Binder.clearCallingIdentity(); 3488 try { 3489 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3490 } finally { 3491 Binder.restoreCallingIdentity(ident); 3492 } 3493 } 3494 3495 private static class SettingsObserver extends ContentObserver { 3496 private int mWhat; 3497 private Handler mHandler; 3498 SettingsObserver(Handler handler, int what) { 3499 super(handler); 3500 mHandler = handler; 3501 mWhat = what; 3502 } 3503 3504 void observe(Context context) { 3505 ContentResolver resolver = context.getContentResolver(); 3506 resolver.registerContentObserver(Settings.Global.getUriFor( 3507 Settings.Global.HTTP_PROXY), false, this); 3508 } 3509 3510 @Override 3511 public void onChange(boolean selfChange) { 3512 mHandler.obtainMessage(mWhat).sendToTarget(); 3513 } 3514 } 3515 3516 private static void log(String s) { 3517 Slog.d(TAG, s); 3518 } 3519 3520 private static void loge(String s) { 3521 Slog.e(TAG, s); 3522 } 3523 3524 int convertFeatureToNetworkType(int networkType, String feature) { 3525 int usedNetworkType = networkType; 3526 3527 if(networkType == ConnectivityManager.TYPE_MOBILE) { 3528 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 3529 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 3530 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 3531 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 3532 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 3533 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 3534 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 3535 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 3536 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 3537 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 3538 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 3539 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 3540 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 3541 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 3542 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 3543 } else { 3544 Slog.e(TAG, "Can't match any mobile netTracker!"); 3545 } 3546 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 3547 if (TextUtils.equals(feature, "p2p")) { 3548 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 3549 } else { 3550 Slog.e(TAG, "Can't match any wifi netTracker!"); 3551 } 3552 } else { 3553 Slog.e(TAG, "Unexpected network type"); 3554 } 3555 return usedNetworkType; 3556 } 3557 3558 private static <T> T checkNotNull(T value, String message) { 3559 if (value == null) { 3560 throw new NullPointerException(message); 3561 } 3562 return value; 3563 } 3564 3565 /** 3566 * Protect a socket from VPN routing rules. This method is used by 3567 * VpnBuilder and not available in ConnectivityManager. Permissions 3568 * are checked in Vpn class. 3569 * @hide 3570 */ 3571 @Override 3572 public boolean protectVpn(ParcelFileDescriptor socket) { 3573 throwIfLockdownEnabled(); 3574 try { 3575 int type = mActiveDefaultNetwork; 3576 int user = UserHandle.getUserId(Binder.getCallingUid()); 3577 if (ConnectivityManager.isNetworkTypeValid(type) && mNetTrackers[type] != null) { 3578 synchronized(mVpns) { 3579 mVpns.get(user).protect(socket, 3580 mNetTrackers[type].getLinkProperties().getInterfaceName()); 3581 } 3582 return true; 3583 } 3584 } catch (Exception e) { 3585 // ignore 3586 } finally { 3587 try { 3588 socket.close(); 3589 } catch (Exception e) { 3590 // ignore 3591 } 3592 } 3593 return false; 3594 } 3595 3596 /** 3597 * Prepare for a VPN application. This method is used by VpnDialogs 3598 * and not available in ConnectivityManager. Permissions are checked 3599 * in Vpn class. 3600 * @hide 3601 */ 3602 @Override 3603 public boolean prepareVpn(String oldPackage, String newPackage) { 3604 throwIfLockdownEnabled(); 3605 int user = UserHandle.getUserId(Binder.getCallingUid()); 3606 synchronized(mVpns) { 3607 return mVpns.get(user).prepare(oldPackage, newPackage); 3608 } 3609 } 3610 3611 @Override 3612 public void markSocketAsUser(ParcelFileDescriptor socket, int uid) { 3613 enforceMarkNetworkSocketPermission(); 3614 final long token = Binder.clearCallingIdentity(); 3615 try { 3616 int mark = mNetd.getMarkForUid(uid); 3617 // Clear the mark on the socket if no mark is needed to prevent socket reuse issues 3618 if (mark == -1) { 3619 mark = 0; 3620 } 3621 NetworkUtils.markSocket(socket.getFd(), mark); 3622 } catch (RemoteException e) { 3623 } finally { 3624 Binder.restoreCallingIdentity(token); 3625 } 3626 } 3627 3628 /** 3629 * Configure a TUN interface and return its file descriptor. Parameters 3630 * are encoded and opaque to this class. This method is used by VpnBuilder 3631 * and not available in ConnectivityManager. Permissions are checked in 3632 * Vpn class. 3633 * @hide 3634 */ 3635 @Override 3636 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3637 throwIfLockdownEnabled(); 3638 int user = UserHandle.getUserId(Binder.getCallingUid()); 3639 synchronized(mVpns) { 3640 return mVpns.get(user).establish(config); 3641 } 3642 } 3643 3644 /** 3645 * Start legacy VPN, controlling native daemons as needed. Creates a 3646 * secondary thread to perform connection work, returning quickly. 3647 */ 3648 @Override 3649 public void startLegacyVpn(VpnProfile profile) { 3650 throwIfLockdownEnabled(); 3651 final LinkProperties egress = getActiveLinkProperties(); 3652 if (egress == null) { 3653 throw new IllegalStateException("Missing active network connection"); 3654 } 3655 int user = UserHandle.getUserId(Binder.getCallingUid()); 3656 synchronized(mVpns) { 3657 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3658 } 3659 } 3660 3661 /** 3662 * Return the information of the ongoing legacy VPN. This method is used 3663 * by VpnSettings and not available in ConnectivityManager. Permissions 3664 * are checked in Vpn class. 3665 * @hide 3666 */ 3667 @Override 3668 public LegacyVpnInfo getLegacyVpnInfo() { 3669 throwIfLockdownEnabled(); 3670 int user = UserHandle.getUserId(Binder.getCallingUid()); 3671 synchronized(mVpns) { 3672 return mVpns.get(user).getLegacyVpnInfo(); 3673 } 3674 } 3675 3676 /** 3677 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 3678 * not available in ConnectivityManager. 3679 * Permissions are checked in Vpn class. 3680 * @hide 3681 */ 3682 @Override 3683 public VpnConfig getVpnConfig() { 3684 int user = UserHandle.getUserId(Binder.getCallingUid()); 3685 synchronized(mVpns) { 3686 return mVpns.get(user).getVpnConfig(); 3687 } 3688 } 3689 3690 /** 3691 * Callback for VPN subsystem. Currently VPN is not adapted to the service 3692 * through NetworkStateTracker since it works differently. For example, it 3693 * needs to override DNS servers but never takes the default routes. It 3694 * relies on another data network, and it could keep existing connections 3695 * alive after reconnecting, switching between networks, or even resuming 3696 * from deep sleep. Calls from applications should be done synchronously 3697 * to avoid race conditions. As these are all hidden APIs, refactoring can 3698 * be done whenever a better abstraction is developed. 3699 */ 3700 public class VpnCallback { 3701 private VpnCallback() { 3702 } 3703 3704 public void onStateChanged(NetworkInfo info) { 3705 mHandler.obtainMessage(EVENT_VPN_STATE_CHANGED, info).sendToTarget(); 3706 } 3707 3708 public void override(String iface, List<String> dnsServers, List<String> searchDomains) { 3709 if (dnsServers == null) { 3710 restore(); 3711 return; 3712 } 3713 3714 // Convert DNS servers into addresses. 3715 List<InetAddress> addresses = new ArrayList<InetAddress>(); 3716 for (String address : dnsServers) { 3717 // Double check the addresses and remove invalid ones. 3718 try { 3719 addresses.add(InetAddress.parseNumericAddress(address)); 3720 } catch (Exception e) { 3721 // ignore 3722 } 3723 } 3724 if (addresses.isEmpty()) { 3725 restore(); 3726 return; 3727 } 3728 3729 // Concatenate search domains into a string. 3730 StringBuilder buffer = new StringBuilder(); 3731 if (searchDomains != null) { 3732 for (String domain : searchDomains) { 3733 buffer.append(domain).append(' '); 3734 } 3735 } 3736 String domains = buffer.toString().trim(); 3737 3738 // Apply DNS changes. 3739 synchronized (mDnsLock) { 3740 updateDnsLocked("VPN", iface, addresses, domains, false); 3741 } 3742 3743 // Temporarily disable the default proxy (not global). 3744 synchronized (mProxyLock) { 3745 mDefaultProxyDisabled = true; 3746 if (mGlobalProxy == null && mDefaultProxy != null) { 3747 sendProxyBroadcast(null); 3748 } 3749 } 3750 3751 // TODO: support proxy per network. 3752 } 3753 3754 public void restore() { 3755 synchronized (mProxyLock) { 3756 mDefaultProxyDisabled = false; 3757 if (mGlobalProxy == null && mDefaultProxy != null) { 3758 sendProxyBroadcast(mDefaultProxy); 3759 } 3760 } 3761 } 3762 3763 public void protect(ParcelFileDescriptor socket) { 3764 try { 3765 final int mark = mNetd.getMarkForProtect(); 3766 NetworkUtils.markSocket(socket.getFd(), mark); 3767 } catch (RemoteException e) { 3768 } 3769 } 3770 3771 public void setRoutes(String interfaze, List<RouteInfo> routes) { 3772 for (RouteInfo route : routes) { 3773 try { 3774 mNetd.setMarkedForwardingRoute(interfaze, route); 3775 } catch (RemoteException e) { 3776 } 3777 } 3778 } 3779 3780 public void setMarkedForwarding(String interfaze) { 3781 try { 3782 mNetd.setMarkedForwarding(interfaze); 3783 } catch (RemoteException e) { 3784 } 3785 } 3786 3787 public void clearMarkedForwarding(String interfaze) { 3788 try { 3789 mNetd.clearMarkedForwarding(interfaze); 3790 } catch (RemoteException e) { 3791 } 3792 } 3793 3794 public void addUserForwarding(String interfaze, int uid, boolean forwardDns) { 3795 int uidStart = uid * UserHandle.PER_USER_RANGE; 3796 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 3797 addUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 3798 } 3799 3800 public void clearUserForwarding(String interfaze, int uid, boolean forwardDns) { 3801 int uidStart = uid * UserHandle.PER_USER_RANGE; 3802 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 3803 clearUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 3804 } 3805 3806 public void addUidForwarding(String interfaze, int uidStart, int uidEnd, 3807 boolean forwardDns) { 3808 try { 3809 mNetd.setUidRangeRoute(interfaze,uidStart, uidEnd); 3810 if (forwardDns) mNetd.setDnsInterfaceForUidRange(interfaze, uidStart, uidEnd); 3811 } catch (RemoteException e) { 3812 } 3813 3814 } 3815 3816 public void clearUidForwarding(String interfaze, int uidStart, int uidEnd, 3817 boolean forwardDns) { 3818 try { 3819 mNetd.clearUidRangeRoute(interfaze, uidStart, uidEnd); 3820 if (forwardDns) mNetd.clearDnsInterfaceForUidRange(uidStart, uidEnd); 3821 } catch (RemoteException e) { 3822 } 3823 3824 } 3825 } 3826 3827 @Override 3828 public boolean updateLockdownVpn() { 3829 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3830 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3831 return false; 3832 } 3833 3834 // Tear down existing lockdown if profile was removed 3835 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3836 if (mLockdownEnabled) { 3837 if (!mKeyStore.isUnlocked()) { 3838 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3839 return false; 3840 } 3841 3842 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3843 final VpnProfile profile = VpnProfile.decode( 3844 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3845 int user = UserHandle.getUserId(Binder.getCallingUid()); 3846 synchronized(mVpns) { 3847 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3848 profile)); 3849 } 3850 } else { 3851 setLockdownTracker(null); 3852 } 3853 3854 return true; 3855 } 3856 3857 /** 3858 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3859 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3860 */ 3861 private void setLockdownTracker(LockdownVpnTracker tracker) { 3862 // Shutdown any existing tracker 3863 final LockdownVpnTracker existing = mLockdownTracker; 3864 mLockdownTracker = null; 3865 if (existing != null) { 3866 existing.shutdown(); 3867 } 3868 3869 try { 3870 if (tracker != null) { 3871 mNetd.setFirewallEnabled(true); 3872 mNetd.setFirewallInterfaceRule("lo", true); 3873 mLockdownTracker = tracker; 3874 mLockdownTracker.init(); 3875 } else { 3876 mNetd.setFirewallEnabled(false); 3877 } 3878 } catch (RemoteException e) { 3879 // ignored; NMS lives inside system_server 3880 } 3881 } 3882 3883 private void throwIfLockdownEnabled() { 3884 if (mLockdownEnabled) { 3885 throw new IllegalStateException("Unavailable in lockdown mode"); 3886 } 3887 } 3888 3889 public void supplyMessenger(int networkType, Messenger messenger) { 3890 enforceConnectivityInternalPermission(); 3891 3892 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 3893 mNetTrackers[networkType].supplyMessenger(messenger); 3894 } 3895 } 3896 3897 public int findConnectionTypeForIface(String iface) { 3898 enforceConnectivityInternalPermission(); 3899 3900 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 3901 for (NetworkStateTracker tracker : mNetTrackers) { 3902 if (tracker != null) { 3903 LinkProperties lp = tracker.getLinkProperties(); 3904 if (lp != null && iface.equals(lp.getInterfaceName())) { 3905 return tracker.getNetworkInfo().getType(); 3906 } 3907 } 3908 } 3909 return ConnectivityManager.TYPE_NONE; 3910 } 3911 3912 /** 3913 * Have mobile data fail fast if enabled. 3914 * 3915 * @param enabled DctConstants.ENABLED/DISABLED 3916 */ 3917 private void setEnableFailFastMobileData(int enabled) { 3918 int tag; 3919 3920 if (enabled == DctConstants.ENABLED) { 3921 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 3922 } else { 3923 tag = mEnableFailFastMobileDataTag.get(); 3924 } 3925 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 3926 enabled)); 3927 } 3928 3929 private boolean isMobileDataStateTrackerReady() { 3930 MobileDataStateTracker mdst = 3931 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 3932 return (mdst != null) && (mdst.isReady()); 3933 } 3934 3935 /** 3936 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 3937 */ 3938 3939 /** 3940 * No connection was possible to the network. 3941 * This is NOT a warm sim. 3942 */ 3943 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 3944 3945 /** 3946 * A connection was made to the internet, all is well. 3947 * This is NOT a warm sim. 3948 */ 3949 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 3950 3951 /** 3952 * A connection was made but no dns server was available to resolve a name to address. 3953 * This is NOT a warm sim since provisioning network is supported. 3954 */ 3955 private static final int CMP_RESULT_CODE_NO_DNS = 2; 3956 3957 /** 3958 * A connection was made but could not open a TCP connection. 3959 * This is NOT a warm sim since provisioning network is supported. 3960 */ 3961 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 3962 3963 /** 3964 * A connection was made but there was a redirection, we appear to be in walled garden. 3965 * This is an indication of a warm sim on a mobile network such as T-Mobile. 3966 */ 3967 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 3968 3969 /** 3970 * The mobile network is a provisioning network. 3971 * This is an indication of a warm sim on a mobile network such as AT&T. 3972 */ 3973 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 3974 3975 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 3976 3977 @Override 3978 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3979 int timeOutMs = -1; 3980 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 3981 enforceConnectivityInternalPermission(); 3982 3983 final long token = Binder.clearCallingIdentity(); 3984 try { 3985 timeOutMs = suggestedTimeOutMs; 3986 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 3987 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 3988 } 3989 3990 // Check that mobile networks are supported 3991 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 3992 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 3993 if (DBG) log("checkMobileProvisioning: X no mobile network"); 3994 return timeOutMs; 3995 } 3996 3997 // If we're already checking don't do it again 3998 // TODO: Add a queue of results... 3999 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 4000 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 4001 return timeOutMs; 4002 } 4003 4004 // Start off with mobile notification off 4005 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4006 4007 CheckMp checkMp = new CheckMp(mContext, this); 4008 CheckMp.CallBack cb = new CheckMp.CallBack() { 4009 @Override 4010 void onComplete(Integer result) { 4011 if (DBG) log("CheckMp.onComplete: result=" + result); 4012 NetworkInfo ni = 4013 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 4014 switch(result) { 4015 case CMP_RESULT_CODE_CONNECTABLE: 4016 case CMP_RESULT_CODE_NO_CONNECTION: 4017 case CMP_RESULT_CODE_NO_DNS: 4018 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 4019 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 4020 break; 4021 } 4022 case CMP_RESULT_CODE_REDIRECTED: { 4023 if (DBG) log("CheckMp.onComplete: warm sim"); 4024 String url = getMobileProvisioningUrl(); 4025 if (TextUtils.isEmpty(url)) { 4026 url = getMobileRedirectedProvisioningUrl(); 4027 } 4028 if (TextUtils.isEmpty(url) == false) { 4029 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 4030 setProvNotificationVisible(true, 4031 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4032 url); 4033 } else { 4034 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 4035 } 4036 break; 4037 } 4038 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 4039 String url = getMobileProvisioningUrl(); 4040 if (TextUtils.isEmpty(url) == false) { 4041 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 4042 setProvNotificationVisible(true, 4043 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4044 url); 4045 } else { 4046 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 4047 } 4048 break; 4049 } 4050 default: { 4051 loge("CheckMp.onComplete: ignore unexpected result=" + result); 4052 break; 4053 } 4054 } 4055 mIsCheckingMobileProvisioning.set(false); 4056 } 4057 }; 4058 CheckMp.Params params = 4059 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 4060 if (DBG) log("checkMobileProvisioning: params=" + params); 4061 checkMp.execute(params); 4062 } finally { 4063 Binder.restoreCallingIdentity(token); 4064 if (DBG) log("checkMobileProvisioning: X"); 4065 } 4066 return timeOutMs; 4067 } 4068 4069 static class CheckMp extends 4070 AsyncTask<CheckMp.Params, Void, Integer> { 4071 private static final String CHECKMP_TAG = "CheckMp"; 4072 4073 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 4074 private static boolean mTestingFailures; 4075 4076 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 4077 private static final int MAX_LOOPS = 4; 4078 4079 // Number of milli-seconds to complete all of the retires 4080 public static final int MAX_TIMEOUT_MS = 60000; 4081 4082 // The socket should retry only 5 seconds, the default is longer 4083 private static final int SOCKET_TIMEOUT_MS = 5000; 4084 4085 // Sleep time for network errors 4086 private static final int NET_ERROR_SLEEP_SEC = 3; 4087 4088 // Sleep time for network route establishment 4089 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 4090 4091 // Short sleep time for polling :( 4092 private static final int POLLING_SLEEP_SEC = 1; 4093 4094 private Context mContext; 4095 private ConnectivityService mCs; 4096 private TelephonyManager mTm; 4097 private Params mParams; 4098 4099 /** 4100 * Parameters for AsyncTask.execute 4101 */ 4102 static class Params { 4103 private String mUrl; 4104 private long mTimeOutMs; 4105 private CallBack mCb; 4106 4107 Params(String url, long timeOutMs, CallBack cb) { 4108 mUrl = url; 4109 mTimeOutMs = timeOutMs; 4110 mCb = cb; 4111 } 4112 4113 @Override 4114 public String toString() { 4115 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 4116 } 4117 } 4118 4119 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 4120 // issued by name or ip address, for Google its by name so when we construct 4121 // this HostnameVerifier we'll pass the original Uri and use it to verify 4122 // the host. If the host name in the original uril fails we'll test the 4123 // hostname parameter just incase things change. 4124 static class CheckMpHostnameVerifier implements HostnameVerifier { 4125 Uri mOrgUri; 4126 4127 CheckMpHostnameVerifier(Uri orgUri) { 4128 mOrgUri = orgUri; 4129 } 4130 4131 @Override 4132 public boolean verify(String hostname, SSLSession session) { 4133 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 4134 String orgUriHost = mOrgUri.getHost(); 4135 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 4136 if (DBG) { 4137 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 4138 + " orgUriHost=" + orgUriHost); 4139 } 4140 return retVal; 4141 } 4142 } 4143 4144 /** 4145 * The call back object passed in Params. onComplete will be called 4146 * on the main thread. 4147 */ 4148 abstract static class CallBack { 4149 // Called on the main thread. 4150 abstract void onComplete(Integer result); 4151 } 4152 4153 public CheckMp(Context context, ConnectivityService cs) { 4154 if (Build.IS_DEBUGGABLE) { 4155 mTestingFailures = 4156 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 4157 } else { 4158 mTestingFailures = false; 4159 } 4160 4161 mContext = context; 4162 mCs = cs; 4163 4164 // Setup access to TelephonyService we'll be using. 4165 mTm = (TelephonyManager) mContext.getSystemService( 4166 Context.TELEPHONY_SERVICE); 4167 } 4168 4169 /** 4170 * Get the default url to use for the test. 4171 */ 4172 public String getDefaultUrl() { 4173 // See http://go/clientsdns for usage approval 4174 String server = Settings.Global.getString(mContext.getContentResolver(), 4175 Settings.Global.CAPTIVE_PORTAL_SERVER); 4176 if (server == null) { 4177 server = "clients3.google.com"; 4178 } 4179 return "http://" + server + "/generate_204"; 4180 } 4181 4182 /** 4183 * Detect if its possible to connect to the http url. DNS based detection techniques 4184 * do not work at all hotspots. The best way to check is to perform a request to 4185 * a known address that fetches the data we expect. 4186 */ 4187 private synchronized Integer isMobileOk(Params params) { 4188 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 4189 Uri orgUri = Uri.parse(params.mUrl); 4190 Random rand = new Random(); 4191 mParams = params; 4192 4193 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 4194 result = CMP_RESULT_CODE_NO_CONNECTION; 4195 log("isMobileOk: X not mobile capable result=" + result); 4196 return result; 4197 } 4198 4199 // See if we've already determined we've got a provisioning connection, 4200 // if so we don't need to do anything active. 4201 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 4202 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4203 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 4204 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 4205 4206 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 4207 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4208 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 4209 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 4210 4211 if (isDefaultProvisioning || isHipriProvisioning) { 4212 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4213 log("isMobileOk: X default || hipri is provisioning result=" + result); 4214 return result; 4215 } 4216 4217 try { 4218 // Continue trying to connect until time has run out 4219 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 4220 4221 if (!mCs.isMobileDataStateTrackerReady()) { 4222 // Wait for MobileDataStateTracker to be ready. 4223 if (DBG) log("isMobileOk: mdst is not ready"); 4224 while(SystemClock.elapsedRealtime() < endTime) { 4225 if (mCs.isMobileDataStateTrackerReady()) { 4226 // Enable fail fast as we'll do retries here and use a 4227 // hipri connection so the default connection stays active. 4228 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 4229 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 4230 break; 4231 } 4232 sleep(POLLING_SLEEP_SEC); 4233 } 4234 } 4235 4236 log("isMobileOk: start hipri url=" + params.mUrl); 4237 4238 // First wait until we can start using hipri 4239 Binder binder = new Binder(); 4240 while(SystemClock.elapsedRealtime() < endTime) { 4241 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4242 Phone.FEATURE_ENABLE_HIPRI, binder); 4243 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 4244 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 4245 log("isMobileOk: hipri started"); 4246 break; 4247 } 4248 if (VDBG) log("isMobileOk: hipri not started yet"); 4249 result = CMP_RESULT_CODE_NO_CONNECTION; 4250 sleep(POLLING_SLEEP_SEC); 4251 } 4252 4253 // Continue trying to connect until time has run out 4254 while(SystemClock.elapsedRealtime() < endTime) { 4255 try { 4256 // Wait for hipri to connect. 4257 // TODO: Don't poll and handle situation where hipri fails 4258 // because default is retrying. See b/9569540 4259 NetworkInfo.State state = mCs 4260 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4261 if (state != NetworkInfo.State.CONNECTED) { 4262 if (true/*VDBG*/) { 4263 log("isMobileOk: not connected ni=" + 4264 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4265 } 4266 sleep(POLLING_SLEEP_SEC); 4267 result = CMP_RESULT_CODE_NO_CONNECTION; 4268 continue; 4269 } 4270 4271 // Hipri has started check if this is a provisioning url 4272 MobileDataStateTracker mdst = (MobileDataStateTracker) 4273 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4274 if (mdst.isProvisioningNetwork()) { 4275 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4276 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 4277 return result; 4278 } else { 4279 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 4280 } 4281 4282 // Get of the addresses associated with the url host. We need to use the 4283 // address otherwise HttpURLConnection object will use the name to get 4284 // the addresses and will try every address but that will bypass the 4285 // route to host we setup and the connection could succeed as the default 4286 // interface might be connected to the internet via wifi or other interface. 4287 InetAddress[] addresses; 4288 try { 4289 addresses = InetAddress.getAllByName(orgUri.getHost()); 4290 } catch (UnknownHostException e) { 4291 result = CMP_RESULT_CODE_NO_DNS; 4292 log("isMobileOk: X UnknownHostException result=" + result); 4293 return result; 4294 } 4295 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 4296 4297 // Get the type of addresses supported by this link 4298 LinkProperties lp = mCs.getLinkProperties( 4299 ConnectivityManager.TYPE_MOBILE_HIPRI); 4300 boolean linkHasIpv4 = lp.hasIPv4Address(); 4301 boolean linkHasIpv6 = lp.hasIPv6Address(); 4302 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 4303 + " linkHasIpv6=" + linkHasIpv6); 4304 4305 final ArrayList<InetAddress> validAddresses = 4306 new ArrayList<InetAddress>(addresses.length); 4307 4308 for (InetAddress addr : addresses) { 4309 if (((addr instanceof Inet4Address) && linkHasIpv4) || 4310 ((addr instanceof Inet6Address) && linkHasIpv6)) { 4311 validAddresses.add(addr); 4312 } 4313 } 4314 4315 if (validAddresses.size() == 0) { 4316 return CMP_RESULT_CODE_NO_CONNECTION; 4317 } 4318 4319 int addrTried = 0; 4320 while (true) { 4321 // Loop through at most MAX_LOOPS valid addresses or until 4322 // we run out of time 4323 if (addrTried++ >= MAX_LOOPS) { 4324 log("isMobileOk: too many loops tried - giving up"); 4325 break; 4326 } 4327 if (SystemClock.elapsedRealtime() >= endTime) { 4328 log("isMobileOk: spend too much time - giving up"); 4329 break; 4330 } 4331 4332 InetAddress hostAddr = validAddresses.get(rand.nextInt( 4333 validAddresses.size())); 4334 4335 // Make a route to host so we check the specific interface. 4336 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 4337 hostAddr.getAddress())) { 4338 // Wait a short time to be sure the route is established ?? 4339 log("isMobileOk:" 4340 + " wait to establish route to hostAddr=" + hostAddr); 4341 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 4342 } else { 4343 log("isMobileOk:" 4344 + " could not establish route to hostAddr=" + hostAddr); 4345 // Wait a short time before the next attempt 4346 sleep(NET_ERROR_SLEEP_SEC); 4347 continue; 4348 } 4349 4350 // Rewrite the url to have numeric address to use the specific route 4351 // using http for half the attempts and https for the other half. 4352 // Doing https first and http second as on a redirected walled garden 4353 // such as t-mobile uses we get a SocketTimeoutException: "SSL 4354 // handshake timed out" which we declare as 4355 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 4356 // having http second we will be using logic used for some time. 4357 URL newUrl; 4358 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 4359 newUrl = new URL(scheme, hostAddr.getHostAddress(), 4360 orgUri.getPath()); 4361 log("isMobileOk: newUrl=" + newUrl); 4362 4363 HttpURLConnection urlConn = null; 4364 try { 4365 // Open the connection set the request headers and get the response 4366 urlConn = (HttpURLConnection)newUrl.openConnection( 4367 java.net.Proxy.NO_PROXY); 4368 if (scheme.equals("https")) { 4369 ((HttpsURLConnection)urlConn).setHostnameVerifier( 4370 new CheckMpHostnameVerifier(orgUri)); 4371 } 4372 urlConn.setInstanceFollowRedirects(false); 4373 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 4374 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 4375 urlConn.setUseCaches(false); 4376 urlConn.setAllowUserInteraction(false); 4377 // Set the "Connection" to "Close" as by default "Keep-Alive" 4378 // is used which is useless in this case. 4379 urlConn.setRequestProperty("Connection", "close"); 4380 int responseCode = urlConn.getResponseCode(); 4381 4382 // For debug display the headers 4383 Map<String, List<String>> headers = urlConn.getHeaderFields(); 4384 log("isMobileOk: headers=" + headers); 4385 4386 // Close the connection 4387 urlConn.disconnect(); 4388 urlConn = null; 4389 4390 if (mTestingFailures) { 4391 // Pretend no connection, this tests using http and https 4392 result = CMP_RESULT_CODE_NO_CONNECTION; 4393 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 4394 continue; 4395 } 4396 4397 if (responseCode == 204) { 4398 // Return 4399 result = CMP_RESULT_CODE_CONNECTABLE; 4400 log("isMobileOk: X got expected responseCode=" + responseCode 4401 + " result=" + result); 4402 return result; 4403 } else { 4404 // Retry to be sure this was redirected, we've gotten 4405 // occasions where a server returned 200 even though 4406 // the device didn't have a "warm" sim. 4407 log("isMobileOk: not expected responseCode=" + responseCode); 4408 // TODO - it would be nice in the single-address case to do 4409 // another DNS resolve here, but flushing the cache is a bit 4410 // heavy-handed. 4411 result = CMP_RESULT_CODE_REDIRECTED; 4412 } 4413 } catch (Exception e) { 4414 log("isMobileOk: HttpURLConnection Exception" + e); 4415 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 4416 if (urlConn != null) { 4417 urlConn.disconnect(); 4418 urlConn = null; 4419 } 4420 sleep(NET_ERROR_SLEEP_SEC); 4421 continue; 4422 } 4423 } 4424 log("isMobileOk: X loops|timed out result=" + result); 4425 return result; 4426 } catch (Exception e) { 4427 log("isMobileOk: Exception e=" + e); 4428 continue; 4429 } 4430 } 4431 log("isMobileOk: timed out"); 4432 } finally { 4433 log("isMobileOk: F stop hipri"); 4434 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 4435 mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4436 Phone.FEATURE_ENABLE_HIPRI); 4437 4438 // Wait for hipri to disconnect. 4439 long endTime = SystemClock.elapsedRealtime() + 5000; 4440 4441 while(SystemClock.elapsedRealtime() < endTime) { 4442 NetworkInfo.State state = mCs 4443 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4444 if (state != NetworkInfo.State.DISCONNECTED) { 4445 if (VDBG) { 4446 log("isMobileOk: connected ni=" + 4447 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4448 } 4449 sleep(POLLING_SLEEP_SEC); 4450 continue; 4451 } 4452 } 4453 4454 log("isMobileOk: X result=" + result); 4455 } 4456 return result; 4457 } 4458 4459 @Override 4460 protected Integer doInBackground(Params... params) { 4461 return isMobileOk(params[0]); 4462 } 4463 4464 @Override 4465 protected void onPostExecute(Integer result) { 4466 log("onPostExecute: result=" + result); 4467 if ((mParams != null) && (mParams.mCb != null)) { 4468 mParams.mCb.onComplete(result); 4469 } 4470 } 4471 4472 private String inetAddressesToString(InetAddress[] addresses) { 4473 StringBuffer sb = new StringBuffer(); 4474 boolean firstTime = true; 4475 for(InetAddress addr : addresses) { 4476 if (firstTime) { 4477 firstTime = false; 4478 } else { 4479 sb.append(","); 4480 } 4481 sb.append(addr); 4482 } 4483 return sb.toString(); 4484 } 4485 4486 private void printNetworkInfo() { 4487 boolean hasIccCard = mTm.hasIccCard(); 4488 int simState = mTm.getSimState(); 4489 log("hasIccCard=" + hasIccCard 4490 + " simState=" + simState); 4491 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 4492 if (ni != null) { 4493 log("ni.length=" + ni.length); 4494 for (NetworkInfo netInfo: ni) { 4495 log("netInfo=" + netInfo.toString()); 4496 } 4497 } else { 4498 log("no network info ni=null"); 4499 } 4500 } 4501 4502 /** 4503 * Sleep for a few seconds then return. 4504 * @param seconds 4505 */ 4506 private static void sleep(int seconds) { 4507 log("XXXXX sleeping for " + seconds + " sec"); 4508 long stopTime = System.nanoTime() + (seconds * 1000000000); 4509 long sleepTime; 4510 while ((sleepTime = stopTime - System.nanoTime()) > 0) { 4511 try { 4512 Thread.sleep(sleepTime / 1000000); 4513 } catch (InterruptedException ignored) { 4514 } 4515 } 4516 log("XXXXX returning from sleep"); 4517 } 4518 4519 private static void log(String s) { 4520 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 4521 } 4522 } 4523 4524 // TODO: Move to ConnectivityManager and make public? 4525 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 4526 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 4527 4528 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 4529 @Override 4530 public void onReceive(Context context, Intent intent) { 4531 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 4532 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 4533 } 4534 } 4535 }; 4536 4537 private void handleMobileProvisioningAction(String url) { 4538 // Notication mark notification as not visible 4539 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4540 4541 // If provisioning network handle as a special case, 4542 // otherwise launch browser with the intent directly. 4543 NetworkInfo ni = getProvisioningNetworkInfo(); 4544 if ((ni != null) && ni.isConnectedToProvisioningNetwork()) { 4545 if (DBG) log("handleMobileProvisioningAction: on provisioning network"); 4546 MobileDataStateTracker mdst = (MobileDataStateTracker) 4547 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4548 mdst.enableMobileProvisioning(url); 4549 } else { 4550 if (DBG) log("handleMobileProvisioningAction: on default network"); 4551 // Check for apps that can handle provisioning first 4552 Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP); 4553 provisioningIntent.addCategory(TelephonyIntents.CATEGORY_MCCMNC_PREFIX 4554 + mTelephonyManager.getSimOperator()); 4555 if (mContext.getPackageManager().resolveActivity(provisioningIntent, 0 /* flags */) 4556 != null) { 4557 provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4558 Intent.FLAG_ACTIVITY_NEW_TASK); 4559 mContext.startActivity(provisioningIntent); 4560 } else { 4561 // If no apps exist, use standard URL ACTION_VIEW method 4562 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 4563 Intent.CATEGORY_APP_BROWSER); 4564 newIntent.setData(Uri.parse(url)); 4565 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4566 Intent.FLAG_ACTIVITY_NEW_TASK); 4567 try { 4568 mContext.startActivity(newIntent); 4569 } catch (ActivityNotFoundException e) { 4570 loge("handleMobileProvisioningAction: startActivity failed" + e); 4571 } 4572 } 4573 } 4574 } 4575 4576 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 4577 private volatile boolean mIsNotificationVisible = false; 4578 4579 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 4580 String url) { 4581 if (DBG) { 4582 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 4583 + " extraInfo=" + extraInfo + " url=" + url); 4584 } 4585 4586 Resources r = Resources.getSystem(); 4587 NotificationManager notificationManager = (NotificationManager) mContext 4588 .getSystemService(Context.NOTIFICATION_SERVICE); 4589 4590 if (visible) { 4591 CharSequence title; 4592 CharSequence details; 4593 int icon; 4594 Intent intent; 4595 Notification notification = new Notification(); 4596 switch (networkType) { 4597 case ConnectivityManager.TYPE_WIFI: 4598 title = r.getString(R.string.wifi_available_sign_in, 0); 4599 details = r.getString(R.string.network_available_sign_in_detailed, 4600 extraInfo); 4601 icon = R.drawable.stat_notify_wifi_in_range; 4602 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4603 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4604 Intent.FLAG_ACTIVITY_NEW_TASK); 4605 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4606 break; 4607 case ConnectivityManager.TYPE_MOBILE: 4608 case ConnectivityManager.TYPE_MOBILE_HIPRI: 4609 title = r.getString(R.string.network_available_sign_in, 0); 4610 // TODO: Change this to pull from NetworkInfo once a printable 4611 // name has been added to it 4612 details = mTelephonyManager.getNetworkOperatorName(); 4613 icon = R.drawable.stat_notify_rssi_in_range; 4614 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 4615 intent.putExtra("EXTRA_URL", url); 4616 intent.setFlags(0); 4617 notification.contentIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 4618 break; 4619 default: 4620 title = r.getString(R.string.network_available_sign_in, 0); 4621 details = r.getString(R.string.network_available_sign_in_detailed, 4622 extraInfo); 4623 icon = R.drawable.stat_notify_rssi_in_range; 4624 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4625 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4626 Intent.FLAG_ACTIVITY_NEW_TASK); 4627 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4628 break; 4629 } 4630 4631 notification.when = 0; 4632 notification.icon = icon; 4633 notification.flags = Notification.FLAG_AUTO_CANCEL; 4634 notification.tickerText = title; 4635 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 4636 4637 try { 4638 notificationManager.notify(NOTIFICATION_ID, networkType, notification); 4639 } catch (NullPointerException npe) { 4640 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 4641 npe.printStackTrace(); 4642 } 4643 } else { 4644 try { 4645 notificationManager.cancel(NOTIFICATION_ID, networkType); 4646 } catch (NullPointerException npe) { 4647 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 4648 npe.printStackTrace(); 4649 } 4650 } 4651 mIsNotificationVisible = visible; 4652 } 4653 4654 /** Location to an updatable file listing carrier provisioning urls. 4655 * An example: 4656 * 4657 * <?xml version="1.0" encoding="utf-8"?> 4658 * <provisioningUrls> 4659 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 4660 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 4661 * </provisioningUrls> 4662 */ 4663 private static final String PROVISIONING_URL_PATH = 4664 "/data/misc/radio/provisioning_urls.xml"; 4665 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 4666 4667 /** XML tag for root element. */ 4668 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 4669 /** XML tag for individual url */ 4670 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 4671 /** XML tag for redirected url */ 4672 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 4673 /** XML attribute for mcc */ 4674 private static final String ATTR_MCC = "mcc"; 4675 /** XML attribute for mnc */ 4676 private static final String ATTR_MNC = "mnc"; 4677 4678 private static final int REDIRECTED_PROVISIONING = 1; 4679 private static final int PROVISIONING = 2; 4680 4681 private String getProvisioningUrlBaseFromFile(int type) { 4682 FileReader fileReader = null; 4683 XmlPullParser parser = null; 4684 Configuration config = mContext.getResources().getConfiguration(); 4685 String tagType; 4686 4687 switch (type) { 4688 case PROVISIONING: 4689 tagType = TAG_PROVISIONING_URL; 4690 break; 4691 case REDIRECTED_PROVISIONING: 4692 tagType = TAG_REDIRECTED_URL; 4693 break; 4694 default: 4695 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 4696 type); 4697 } 4698 4699 try { 4700 fileReader = new FileReader(mProvisioningUrlFile); 4701 parser = Xml.newPullParser(); 4702 parser.setInput(fileReader); 4703 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 4704 4705 while (true) { 4706 XmlUtils.nextElement(parser); 4707 4708 String element = parser.getName(); 4709 if (element == null) break; 4710 4711 if (element.equals(tagType)) { 4712 String mcc = parser.getAttributeValue(null, ATTR_MCC); 4713 try { 4714 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 4715 String mnc = parser.getAttributeValue(null, ATTR_MNC); 4716 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 4717 parser.next(); 4718 if (parser.getEventType() == XmlPullParser.TEXT) { 4719 return parser.getText(); 4720 } 4721 } 4722 } 4723 } catch (NumberFormatException e) { 4724 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 4725 } 4726 } 4727 } 4728 return null; 4729 } catch (FileNotFoundException e) { 4730 loge("Carrier Provisioning Urls file not found"); 4731 } catch (XmlPullParserException e) { 4732 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 4733 } catch (IOException e) { 4734 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 4735 } finally { 4736 if (fileReader != null) { 4737 try { 4738 fileReader.close(); 4739 } catch (IOException e) {} 4740 } 4741 } 4742 return null; 4743 } 4744 4745 @Override 4746 public String getMobileRedirectedProvisioningUrl() { 4747 enforceConnectivityInternalPermission(); 4748 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 4749 if (TextUtils.isEmpty(url)) { 4750 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 4751 } 4752 return url; 4753 } 4754 4755 @Override 4756 public String getMobileProvisioningUrl() { 4757 enforceConnectivityInternalPermission(); 4758 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 4759 if (TextUtils.isEmpty(url)) { 4760 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 4761 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 4762 } else { 4763 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 4764 } 4765 // populate the iccid, imei and phone number in the provisioning url. 4766 if (!TextUtils.isEmpty(url)) { 4767 String phoneNumber = mTelephonyManager.getLine1Number(); 4768 if (TextUtils.isEmpty(phoneNumber)) { 4769 phoneNumber = "0000000000"; 4770 } 4771 url = String.format(url, 4772 mTelephonyManager.getSimSerialNumber() /* ICCID */, 4773 mTelephonyManager.getDeviceId() /* IMEI */, 4774 phoneNumber /* Phone numer */); 4775 } 4776 4777 return url; 4778 } 4779 4780 @Override 4781 public void setProvisioningNotificationVisible(boolean visible, int networkType, 4782 String extraInfo, String url) { 4783 enforceConnectivityInternalPermission(); 4784 setProvNotificationVisible(visible, networkType, extraInfo, url); 4785 } 4786 4787 @Override 4788 public void setAirplaneMode(boolean enable) { 4789 enforceConnectivityInternalPermission(); 4790 final long ident = Binder.clearCallingIdentity(); 4791 try { 4792 final ContentResolver cr = mContext.getContentResolver(); 4793 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 4794 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 4795 intent.putExtra("state", enable); 4796 mContext.sendBroadcast(intent); 4797 } finally { 4798 Binder.restoreCallingIdentity(ident); 4799 } 4800 } 4801 4802 private void onUserStart(int userId) { 4803 synchronized(mVpns) { 4804 Vpn userVpn = mVpns.get(userId); 4805 if (userVpn != null) { 4806 loge("Starting user already has a VPN"); 4807 return; 4808 } 4809 userVpn = new Vpn(mContext, mVpnCallback, mNetd, this, userId); 4810 mVpns.put(userId, userVpn); 4811 userVpn.startMonitoring(mContext, mTrackerHandler); 4812 } 4813 } 4814 4815 private void onUserStop(int userId) { 4816 synchronized(mVpns) { 4817 Vpn userVpn = mVpns.get(userId); 4818 if (userVpn == null) { 4819 loge("Stopping user has no VPN"); 4820 return; 4821 } 4822 mVpns.delete(userId); 4823 } 4824 } 4825 4826 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 4827 @Override 4828 public void onReceive(Context context, Intent intent) { 4829 final String action = intent.getAction(); 4830 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 4831 if (userId == UserHandle.USER_NULL) return; 4832 4833 if (Intent.ACTION_USER_STARTING.equals(action)) { 4834 onUserStart(userId); 4835 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 4836 onUserStop(userId); 4837 } 4838 } 4839 }; 4840 4841 @Override 4842 public LinkQualityInfo getLinkQualityInfo(int networkType) { 4843 enforceAccessPermission(); 4844 if (isNetworkTypeValid(networkType)) { 4845 return mNetTrackers[networkType].getLinkQualityInfo(); 4846 } else { 4847 return null; 4848 } 4849 } 4850 4851 @Override 4852 public LinkQualityInfo getActiveLinkQualityInfo() { 4853 enforceAccessPermission(); 4854 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 4855 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 4856 } else { 4857 return null; 4858 } 4859 } 4860 4861 @Override 4862 public LinkQualityInfo[] getAllLinkQualityInfo() { 4863 enforceAccessPermission(); 4864 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 4865 for (NetworkStateTracker tracker : mNetTrackers) { 4866 if (tracker != null) { 4867 LinkQualityInfo li = tracker.getLinkQualityInfo(); 4868 if (li != null) { 4869 result.add(li); 4870 } 4871 } 4872 } 4873 4874 return result.toArray(new LinkQualityInfo[result.size()]); 4875 } 4876 4877 /* Infrastructure for network sampling */ 4878 4879 private void handleNetworkSamplingTimeout() { 4880 4881 log("Sampling interval elapsed, updating statistics .."); 4882 4883 // initialize list of interfaces .. 4884 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 4885 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 4886 for (NetworkStateTracker tracker : mNetTrackers) { 4887 if (tracker != null) { 4888 String ifaceName = tracker.getNetworkInterfaceName(); 4889 if (ifaceName != null) { 4890 mapIfaceToSample.put(ifaceName, null); 4891 } 4892 } 4893 } 4894 4895 // Read samples for all interfaces 4896 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 4897 4898 // process samples for all networks 4899 for (NetworkStateTracker tracker : mNetTrackers) { 4900 if (tracker != null) { 4901 String ifaceName = tracker.getNetworkInterfaceName(); 4902 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 4903 if (ss != null) { 4904 // end the previous sampling cycle 4905 tracker.stopSampling(ss); 4906 // start a new sampling cycle .. 4907 tracker.startSampling(ss); 4908 } 4909 } 4910 } 4911 4912 log("Done."); 4913 4914 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 4915 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 4916 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 4917 4918 if (DBG) log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 4919 4920 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 4921 } 4922 4923 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 4924 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 4925 mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, wakeupTime, intent); 4926 } 4927} 4928