ConnectivityService.java revision 76ea6c68d3222441970ef98079ba30710ac8c595
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_MOBILE; 26import static android.net.ConnectivityManager.TYPE_MOBILE_MMS; 27import static android.net.ConnectivityManager.TYPE_MOBILE_SUPL; 28import static android.net.ConnectivityManager.TYPE_MOBILE_DUN; 29import static android.net.ConnectivityManager.TYPE_MOBILE_FOTA; 30import static android.net.ConnectivityManager.TYPE_MOBILE_IMS; 31import static android.net.ConnectivityManager.TYPE_MOBILE_CBS; 32import static android.net.ConnectivityManager.TYPE_MOBILE_IA; 33import static android.net.ConnectivityManager.TYPE_MOBILE_HIPRI; 34import static android.net.ConnectivityManager.TYPE_NONE; 35import static android.net.ConnectivityManager.TYPE_WIFI; 36import static android.net.ConnectivityManager.TYPE_WIMAX; 37import static android.net.ConnectivityManager.TYPE_PROXY; 38import static android.net.ConnectivityManager.getNetworkTypeName; 39import static android.net.ConnectivityManager.isNetworkTypeValid; 40import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 41import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 42 43import android.app.AlarmManager; 44import android.app.AppOpsManager; 45import android.app.Notification; 46import android.app.NotificationManager; 47import android.app.PendingIntent; 48import android.bluetooth.BluetoothTetheringDataTracker; 49import android.content.ActivityNotFoundException; 50import android.content.BroadcastReceiver; 51import android.content.ContentResolver; 52import android.content.Context; 53import android.content.ContextWrapper; 54import android.content.Intent; 55import android.content.IntentFilter; 56import android.content.pm.ApplicationInfo; 57import android.content.pm.PackageManager; 58import android.content.pm.PackageManager.NameNotFoundException; 59import android.content.res.Configuration; 60import android.content.res.Resources; 61import android.database.ContentObserver; 62import android.net.CaptivePortalTracker; 63import android.net.ConnectivityManager; 64import android.net.DummyDataStateTracker; 65import android.net.IConnectivityManager; 66import android.net.INetworkManagementEventObserver; 67import android.net.INetworkPolicyListener; 68import android.net.INetworkPolicyManager; 69import android.net.INetworkStatsService; 70import android.net.LinkAddress; 71import android.net.LinkProperties; 72import android.net.LinkProperties.CompareResult; 73import android.net.LinkQualityInfo; 74import android.net.MobileDataStateTracker; 75import android.net.Network; 76import android.net.NetworkAgent; 77import android.net.NetworkCapabilities; 78import android.net.NetworkConfig; 79import android.net.NetworkInfo; 80import android.net.NetworkInfo.DetailedState; 81import android.net.NetworkFactory; 82import android.net.NetworkQuotaInfo; 83import android.net.NetworkRequest; 84import android.net.NetworkState; 85import android.net.NetworkStateTracker; 86import android.net.NetworkUtils; 87import android.net.Proxy; 88import android.net.ProxyDataTracker; 89import android.net.ProxyInfo; 90import android.net.RouteInfo; 91import android.net.SamplingDataTracker; 92import android.net.Uri; 93import android.net.wimax.WimaxManagerConstants; 94import android.os.AsyncTask; 95import android.os.Binder; 96import android.os.Build; 97import android.os.FileUtils; 98import android.os.Handler; 99import android.os.HandlerThread; 100import android.os.IBinder; 101import android.os.INetworkManagementService; 102import android.os.Looper; 103import android.os.Message; 104import android.os.Messenger; 105import android.os.ParcelFileDescriptor; 106import android.os.PowerManager; 107import android.os.Process; 108import android.os.RemoteException; 109import android.os.ServiceManager; 110import android.os.SystemClock; 111import android.os.SystemProperties; 112import android.os.UserHandle; 113import android.provider.Settings; 114import android.security.Credentials; 115import android.security.KeyStore; 116import android.telephony.TelephonyManager; 117import android.text.TextUtils; 118import android.util.Slog; 119import android.util.SparseArray; 120import android.util.SparseIntArray; 121import android.util.Xml; 122 123import com.android.internal.R; 124import com.android.internal.annotations.GuardedBy; 125import com.android.internal.net.LegacyVpnInfo; 126import com.android.internal.net.VpnConfig; 127import com.android.internal.net.VpnProfile; 128import com.android.internal.telephony.DctConstants; 129import com.android.internal.telephony.Phone; 130import com.android.internal.telephony.PhoneConstants; 131import com.android.internal.telephony.TelephonyIntents; 132import com.android.internal.util.AsyncChannel; 133import com.android.internal.util.IndentingPrintWriter; 134import com.android.internal.util.XmlUtils; 135import com.android.server.am.BatteryStatsService; 136import com.android.server.connectivity.DataConnectionStats; 137import com.android.server.connectivity.Nat464Xlat; 138import com.android.server.connectivity.NetworkAgentInfo; 139import com.android.server.connectivity.NetworkMonitor; 140import com.android.server.connectivity.PacManager; 141import com.android.server.connectivity.Tethering; 142import com.android.server.connectivity.Vpn; 143import com.android.server.net.BaseNetworkObserver; 144import com.android.server.net.LockdownVpnTracker; 145import com.google.android.collect.Lists; 146import com.google.android.collect.Sets; 147 148import dalvik.system.DexClassLoader; 149 150import org.xmlpull.v1.XmlPullParser; 151import org.xmlpull.v1.XmlPullParserException; 152 153import java.io.File; 154import java.io.FileDescriptor; 155import java.io.FileNotFoundException; 156import java.io.FileReader; 157import java.io.IOException; 158import java.io.PrintWriter; 159import java.lang.reflect.Constructor; 160import java.net.HttpURLConnection; 161import java.net.Inet4Address; 162import java.net.Inet6Address; 163import java.net.InetAddress; 164import java.net.URL; 165import java.net.UnknownHostException; 166import java.util.ArrayList; 167import java.util.Arrays; 168import java.util.Collection; 169import java.util.GregorianCalendar; 170import java.util.HashMap; 171import java.util.HashSet; 172import java.util.List; 173import java.util.Map; 174import java.util.Random; 175import java.util.concurrent.atomic.AtomicBoolean; 176import java.util.concurrent.atomic.AtomicInteger; 177 178import javax.net.ssl.HostnameVerifier; 179import javax.net.ssl.HttpsURLConnection; 180import javax.net.ssl.SSLSession; 181 182import static android.net.ConnectivityManager.INVALID_NET_ID; 183 184/** 185 * @hide 186 */ 187public class ConnectivityService extends IConnectivityManager.Stub { 188 private static final String TAG = "ConnectivityService"; 189 190 private static final boolean DBG = true; 191 private static final boolean VDBG = true; // STOPSHIP 192 193 // network sampling debugging 194 private static final boolean SAMPLE_DBG = false; 195 196 private static final boolean LOGD_RULES = false; 197 198 // TODO: create better separation between radio types and network types 199 200 // how long to wait before switching back to a radio's default network 201 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 202 // system property that can override the above value 203 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 204 "android.telephony.apn-restore"; 205 206 // Default value if FAIL_FAST_TIME_MS is not set 207 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 208 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 209 private static final String FAIL_FAST_TIME_MS = 210 "persist.radio.fail_fast_time_ms"; 211 212 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 213 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 214 215 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 216 217 private PendingIntent mSampleIntervalElapsedIntent; 218 219 // Set network sampling interval at 12 minutes, this way, even if the timers get 220 // aggregated, it will fire at around 15 minutes, which should allow us to 221 // aggregate this timer with other timers (specially the socket keep alive timers) 222 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 12 * 60); 223 224 // start network sampling a minute after booting ... 225 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 60); 226 227 AlarmManager mAlarmManager; 228 229 // used in recursive route setting to add gateways for the host for which 230 // a host route was requested. 231 private static final int MAX_HOSTROUTE_CYCLE_COUNT = 10; 232 233 private Tethering mTethering; 234 235 private KeyStore mKeyStore; 236 237 @GuardedBy("mVpns") 238 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 239 private VpnCallback mVpnCallback = new VpnCallback(); 240 241 private boolean mLockdownEnabled; 242 private LockdownVpnTracker mLockdownTracker; 243 244 private Nat464Xlat mClat; 245 246 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 247 private Object mRulesLock = new Object(); 248 /** Currently active network rules by UID. */ 249 private SparseIntArray mUidRules = new SparseIntArray(); 250 /** Set of ifaces that are costly. */ 251 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 252 253 /** 254 * Sometimes we want to refer to the individual network state 255 * trackers separately, and sometimes we just want to treat them 256 * abstractly. 257 */ 258 private NetworkStateTracker mNetTrackers[]; 259 260 /* Handles captive portal check on a network */ 261 private CaptivePortalTracker mCaptivePortalTracker; 262 263 /** 264 * The link properties that define the current links 265 */ 266 private LinkProperties mCurrentLinkProperties[]; 267 268 /** 269 * A per Net list of the PID's that requested access to the net 270 * used both as a refcount and for per-PID DNS selection 271 */ 272 private List<Integer> mNetRequestersPids[]; 273 274 // priority order of the nettrackers 275 // (excluding dynamically set mNetworkPreference) 276 // TODO - move mNetworkTypePreference into this 277 private int[] mPriorityList; 278 279 private Context mContext; 280 private int mNetworkPreference; 281 private int mActiveDefaultNetwork = -1; 282 // 0 is full bad, 100 is full good 283 private int mDefaultInetCondition = 0; 284 private int mDefaultInetConditionPublished = 0; 285 private boolean mInetConditionChangeInFlight = false; 286 private int mDefaultConnectionSequence = 0; 287 288 private Object mDnsLock = new Object(); 289 private int mNumDnsEntries; 290 291 private boolean mTestMode; 292 private static ConnectivityService sServiceInstance; 293 294 private INetworkManagementService mNetd; 295 private INetworkPolicyManager mPolicyManager; 296 297 private static final int ENABLED = 1; 298 private static final int DISABLED = 0; 299 300 private static final boolean ADD = true; 301 private static final boolean REMOVE = false; 302 303 private static final boolean TO_DEFAULT_TABLE = true; 304 private static final boolean TO_SECONDARY_TABLE = false; 305 306 private static final boolean EXEMPT = true; 307 private static final boolean UNEXEMPT = false; 308 309 /** 310 * used internally as a delayed event to make us switch back to the 311 * default network 312 */ 313 private static final int EVENT_RESTORE_DEFAULT_NETWORK = 1; 314 315 /** 316 * used internally to change our mobile data enabled flag 317 */ 318 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 319 320 /** 321 * used internally to synchronize inet condition reports 322 * arg1 = networkType 323 * arg2 = condition (0 bad, 100 good) 324 */ 325 private static final int EVENT_INET_CONDITION_CHANGE = 4; 326 327 /** 328 * used internally to mark the end of inet condition hold periods 329 * arg1 = networkType 330 */ 331 private static final int EVENT_INET_CONDITION_HOLD_END = 5; 332 333 /** 334 * used internally to clear a wakelock when transitioning 335 * from one net to another 336 */ 337 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 338 339 /** 340 * used internally to reload global proxy settings 341 */ 342 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 343 344 /** 345 * used internally to set external dependency met/unmet 346 * arg1 = ENABLED (met) or DISABLED (unmet) 347 * arg2 = NetworkType 348 */ 349 private static final int EVENT_SET_DEPENDENCY_MET = 10; 350 351 /** 352 * used internally to send a sticky broadcast delayed. 353 */ 354 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 355 356 /** 357 * Used internally to 358 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 359 */ 360 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 361 362 private static final int EVENT_VPN_STATE_CHANGED = 13; 363 364 /** 365 * Used internally to disable fail fast of mobile data 366 */ 367 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 368 369 /** 370 * used internally to indicate that data sampling interval is up 371 */ 372 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 373 374 /** 375 * PAC manager has received new port. 376 */ 377 private static final int EVENT_PROXY_HAS_CHANGED = 16; 378 379 /** 380 * used internally when registering NetworkFactories 381 * obj = NetworkFactoryInfo 382 */ 383 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 384 385 /** 386 * used internally when registering NetworkAgents 387 * obj = Messenger 388 */ 389 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 390 391 /** 392 * used to add a network request 393 * includes a NetworkRequestInfo 394 */ 395 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 396 397 /** 398 * indicates a timeout period is over - check if we had a network yet or not 399 * and if not, call the timeout calback (but leave the request live until they 400 * cancel it. 401 * includes a NetworkRequestInfo 402 */ 403 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 404 405 /** 406 * used to add a network listener - no request 407 * includes a NetworkRequestInfo 408 */ 409 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 410 411 /** 412 * used to remove a network request, either a listener or a real request 413 * includes a NetworkRequest 414 */ 415 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 416 417 /** 418 * used internally when registering NetworkFactories 419 * obj = Messenger 420 */ 421 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 422 423 424 /** Handler used for internal events. */ 425 final private InternalHandler mHandler; 426 /** Handler used for incoming {@link NetworkStateTracker} events. */ 427 final private NetworkStateTrackerHandler mTrackerHandler; 428 429 // list of DeathRecipients used to make sure features are turned off when 430 // a process dies 431 private List<FeatureUser> mFeatureUsers; 432 433 private boolean mSystemReady; 434 private Intent mInitialBroadcast; 435 436 private PowerManager.WakeLock mNetTransitionWakeLock; 437 private String mNetTransitionWakeLockCausedBy = ""; 438 private int mNetTransitionWakeLockSerialNumber; 439 private int mNetTransitionWakeLockTimeout; 440 441 private InetAddress mDefaultDns; 442 443 // Lock for protecting access to mAddedRoutes and mExemptAddresses 444 private final Object mRoutesLock = new Object(); 445 446 // this collection is used to refcount the added routes - if there are none left 447 // it's time to remove the route from the route table 448 @GuardedBy("mRoutesLock") 449 private Collection<RouteInfo> mAddedRoutes = new ArrayList<RouteInfo>(); 450 451 // this collection corresponds to the entries of mAddedRoutes that have routing exemptions 452 // used to handle cleanup of exempt rules 453 @GuardedBy("mRoutesLock") 454 private Collection<LinkAddress> mExemptAddresses = new ArrayList<LinkAddress>(); 455 456 // used in DBG mode to track inet condition reports 457 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 458 private ArrayList mInetLog; 459 460 // track the current default http proxy - tell the world if we get a new one (real change) 461 private ProxyInfo mDefaultProxy = null; 462 private Object mProxyLock = new Object(); 463 private boolean mDefaultProxyDisabled = false; 464 465 // track the global proxy. 466 private ProxyInfo mGlobalProxy = null; 467 468 private PacManager mPacManager = null; 469 470 private SettingsObserver mSettingsObserver; 471 472 private AppOpsManager mAppOpsManager; 473 474 NetworkConfig[] mNetConfigs; 475 int mNetworksDefined; 476 477 private static class RadioAttributes { 478 public int mSimultaneity; 479 public int mType; 480 public RadioAttributes(String init) { 481 String fragments[] = init.split(","); 482 mType = Integer.parseInt(fragments[0]); 483 mSimultaneity = Integer.parseInt(fragments[1]); 484 } 485 } 486 RadioAttributes[] mRadioAttributes; 487 488 // the set of network types that can only be enabled by system/sig apps 489 List mProtectedNetworks; 490 491 private DataConnectionStats mDataConnectionStats; 492 493 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 494 495 TelephonyManager mTelephonyManager; 496 497 // sequence number for Networks 498 private final static int MIN_NET_ID = 10; // some reserved marks 499 private final static int MAX_NET_ID = 65535; 500 private int mNextNetId = MIN_NET_ID; 501 502 // sequence number of NetworkRequests 503 private int mNextNetworkRequestId = 1; 504 505 private static final int UID_UNUSED = -1; 506 507 /** 508 * Implements support for the legacy "one network per network type" model. 509 * 510 * We used to have a static array of NetworkStateTrackers, one for each 511 * network type, but that doesn't work any more now that we can have, 512 * for example, more that one wifi network. This class stores all the 513 * NetworkAgentInfo objects that support a given type, but the legacy 514 * API will only see the first one. 515 * 516 * It serves two main purposes: 517 * 518 * 1. Provide information about "the network for a given type" (since this 519 * API only supports one). 520 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 521 * the first network for a given type changes, or if the default network 522 * changes. 523 */ 524 private class LegacyTypeTracker { 525 /** 526 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 527 * Each list holds references to all NetworkAgentInfos that are used to 528 * satisfy requests for that network type. 529 * 530 * This array is built out at startup such that an unsupported network 531 * doesn't get an ArrayList instance, making this a tristate: 532 * unsupported, supported but not active and active. 533 * 534 * The actual lists are populated when we scan the network types that 535 * are supported on this device. 536 */ 537 private ArrayList<NetworkAgentInfo> mTypeLists[]; 538 539 public LegacyTypeTracker() { 540 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 541 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 542 } 543 544 public void addSupportedType(int type) { 545 if (mTypeLists[type] != null) { 546 throw new IllegalStateException( 547 "legacy list for type " + type + "already initialized"); 548 } 549 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 550 } 551 552 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 553 return mNetworkForRequestId.get(mDefaultRequest.requestId) == nai; 554 } 555 556 public boolean isTypeSupported(int type) { 557 return isNetworkTypeValid(type) && mTypeLists[type] != null; 558 } 559 560 public NetworkAgentInfo getNetworkForType(int type) { 561 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 562 return mTypeLists[type].get(0); 563 } else { 564 return null; 565 } 566 } 567 568 public void add(int type, NetworkAgentInfo nai) { 569 if (!isTypeSupported(type)) { 570 return; // Invalid network type. 571 } 572 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 573 574 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 575 if (list.contains(nai)) { 576 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 577 return; 578 } 579 580 if (list.isEmpty() || isDefaultNetwork(nai)) { 581 if (VDBG) log("Sending connected broadcast for type " + type + 582 "isDefaultNetwork=" + isDefaultNetwork(nai)); 583 sendLegacyNetworkBroadcast(nai, true, type); 584 } 585 list.add(nai); 586 } 587 588 public void remove(NetworkAgentInfo nai) { 589 if (VDBG) log("Removing agent " + nai); 590 for (int type = 0; type < mTypeLists.length; type++) { 591 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 592 if (list == null || list.isEmpty()) { 593 continue; 594 } 595 596 boolean wasFirstNetwork = false; 597 if (list.get(0).equals(nai)) { 598 // This network was the first in the list. Send broadcast. 599 wasFirstNetwork = true; 600 } 601 list.remove(nai); 602 603 if (wasFirstNetwork || isDefaultNetwork(nai)) { 604 if (VDBG) log("Sending disconnected broadcast for type " + type + 605 "isDefaultNetwork=" + isDefaultNetwork(nai)); 606 sendLegacyNetworkBroadcast(nai, false, type); 607 } 608 609 if (!list.isEmpty() && wasFirstNetwork) { 610 if (VDBG) log("Other network available for type " + type + 611 ", sending connected broadcast"); 612 sendLegacyNetworkBroadcast(list.get(0), false, type); 613 } 614 } 615 } 616 } 617 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 618 619 public ConnectivityService(Context context, INetworkManagementService netd, 620 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 621 // Currently, omitting a NetworkFactory will create one internally 622 // TODO: create here when we have cleaner WiMAX support 623 this(context, netd, statsService, policyManager, null); 624 } 625 626 public ConnectivityService(Context context, INetworkManagementService netManager, 627 INetworkStatsService statsService, INetworkPolicyManager policyManager, 628 NetworkFactory netFactory) { 629 if (DBG) log("ConnectivityService starting up"); 630 631 NetworkCapabilities netCap = new NetworkCapabilities(); 632 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 633 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 634 mDefaultRequest = new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 635 NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(), 636 NetworkRequestInfo.REQUEST); 637 mNetworkRequests.put(mDefaultRequest, nri); 638 639 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 640 handlerThread.start(); 641 mHandler = new InternalHandler(handlerThread.getLooper()); 642 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 643 644 if (netFactory == null) { 645 netFactory = new DefaultNetworkFactory(context, mTrackerHandler); 646 } 647 648 // setup our unique device name 649 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 650 String id = Settings.Secure.getString(context.getContentResolver(), 651 Settings.Secure.ANDROID_ID); 652 if (id != null && id.length() > 0) { 653 String name = new String("android-").concat(id); 654 SystemProperties.set("net.hostname", name); 655 } 656 } 657 658 // read our default dns server ip 659 String dns = Settings.Global.getString(context.getContentResolver(), 660 Settings.Global.DEFAULT_DNS_SERVER); 661 if (dns == null || dns.length() == 0) { 662 dns = context.getResources().getString( 663 com.android.internal.R.string.config_default_dns_server); 664 } 665 try { 666 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 667 } catch (IllegalArgumentException e) { 668 loge("Error setting defaultDns using " + dns); 669 } 670 671 mContext = checkNotNull(context, "missing Context"); 672 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 673 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 674 mKeyStore = KeyStore.getInstance(); 675 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 676 677 try { 678 mPolicyManager.registerListener(mPolicyListener); 679 } catch (RemoteException e) { 680 // ouch, no rules updates means some processes may never get network 681 loge("unable to register INetworkPolicyListener" + e.toString()); 682 } 683 684 final PowerManager powerManager = (PowerManager) context.getSystemService( 685 Context.POWER_SERVICE); 686 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 687 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 688 com.android.internal.R.integer.config_networkTransitionTimeout); 689 690 mNetTrackers = new NetworkStateTracker[ 691 ConnectivityManager.MAX_NETWORK_TYPE+1]; 692 mCurrentLinkProperties = new LinkProperties[ConnectivityManager.MAX_NETWORK_TYPE+1]; 693 694 mRadioAttributes = new RadioAttributes[ConnectivityManager.MAX_RADIO_TYPE+1]; 695 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 696 697 // Load device network attributes from resources 698 String[] raStrings = context.getResources().getStringArray( 699 com.android.internal.R.array.radioAttributes); 700 for (String raString : raStrings) { 701 RadioAttributes r = new RadioAttributes(raString); 702 if (VDBG) log("raString=" + raString + " r=" + r); 703 if (r.mType > ConnectivityManager.MAX_RADIO_TYPE) { 704 loge("Error in radioAttributes - ignoring attempt to define type " + r.mType); 705 continue; 706 } 707 if (mRadioAttributes[r.mType] != null) { 708 loge("Error in radioAttributes - ignoring attempt to redefine type " + 709 r.mType); 710 continue; 711 } 712 mRadioAttributes[r.mType] = r; 713 } 714 715 // TODO: What is the "correct" way to do determine if this is a wifi only device? 716 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 717 log("wifiOnly=" + wifiOnly); 718 String[] naStrings = context.getResources().getStringArray( 719 com.android.internal.R.array.networkAttributes); 720 for (String naString : naStrings) { 721 try { 722 NetworkConfig n = new NetworkConfig(naString); 723 if (VDBG) log("naString=" + naString + " config=" + n); 724 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 725 loge("Error in networkAttributes - ignoring attempt to define type " + 726 n.type); 727 continue; 728 } 729 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 730 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 731 n.type); 732 continue; 733 } 734 if (mNetConfigs[n.type] != null) { 735 loge("Error in networkAttributes - ignoring attempt to redefine type " + 736 n.type); 737 continue; 738 } 739 if (mRadioAttributes[n.radio] == null) { 740 loge("Error in networkAttributes - ignoring attempt to use undefined " + 741 "radio " + n.radio + " in network type " + n.type); 742 continue; 743 } 744 mLegacyTypeTracker.addSupportedType(n.type); 745 746 mNetConfigs[n.type] = n; 747 mNetworksDefined++; 748 } catch(Exception e) { 749 // ignore it - leave the entry null 750 } 751 } 752 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 753 754 mProtectedNetworks = new ArrayList<Integer>(); 755 int[] protectedNetworks = context.getResources().getIntArray( 756 com.android.internal.R.array.config_protectedNetworks); 757 for (int p : protectedNetworks) { 758 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 759 mProtectedNetworks.add(p); 760 } else { 761 if (DBG) loge("Ignoring protectedNetwork " + p); 762 } 763 } 764 765 // high priority first 766 mPriorityList = new int[mNetworksDefined]; 767 { 768 int insertionPoint = mNetworksDefined-1; 769 int currentLowest = 0; 770 int nextLowest = 0; 771 while (insertionPoint > -1) { 772 for (NetworkConfig na : mNetConfigs) { 773 if (na == null) continue; 774 if (na.priority < currentLowest) continue; 775 if (na.priority > currentLowest) { 776 if (na.priority < nextLowest || nextLowest == 0) { 777 nextLowest = na.priority; 778 } 779 continue; 780 } 781 mPriorityList[insertionPoint--] = na.type; 782 } 783 currentLowest = nextLowest; 784 nextLowest = 0; 785 } 786 } 787 788 mNetRequestersPids = 789 (List<Integer> [])new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE+1]; 790 for (int i : mPriorityList) { 791 mNetRequestersPids[i] = new ArrayList<Integer>(); 792 } 793 794 mFeatureUsers = new ArrayList<FeatureUser>(); 795 796 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 797 && SystemProperties.get("ro.build.type").equals("eng"); 798 799 // Create and start trackers for hard-coded networks 800 for (int targetNetworkType : mPriorityList) { 801 final NetworkConfig config = mNetConfigs[targetNetworkType]; 802 final NetworkStateTracker tracker; 803 try { 804 tracker = netFactory.createTracker(targetNetworkType, config); 805 mNetTrackers[targetNetworkType] = tracker; 806 } catch (IllegalArgumentException e) { 807 Slog.e(TAG, "Problem creating " + getNetworkTypeName(targetNetworkType) 808 + " tracker: " + e); 809 continue; 810 } 811 812 tracker.startMonitoring(context, mTrackerHandler); 813 if (config.isDefault()) { 814 tracker.reconnect(); 815 } 816 } 817 818 mTethering = new Tethering(mContext, mNetd, statsService, this, mHandler.getLooper()); 819 820 //set up the listener for user state for creating user VPNs 821 IntentFilter intentFilter = new IntentFilter(); 822 intentFilter.addAction(Intent.ACTION_USER_STARTING); 823 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 824 mContext.registerReceiverAsUser( 825 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 826 mClat = new Nat464Xlat(mContext, mNetd, this, mTrackerHandler); 827 828 try { 829 mNetd.registerObserver(mTethering); 830 mNetd.registerObserver(mDataActivityObserver); 831 mNetd.registerObserver(mClat); 832 } catch (RemoteException e) { 833 loge("Error registering observer :" + e); 834 } 835 836 if (DBG) { 837 mInetLog = new ArrayList(); 838 } 839 840 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 841 mSettingsObserver.observe(mContext); 842 843 mDataConnectionStats = new DataConnectionStats(mContext); 844 mDataConnectionStats.startMonitoring(); 845 846 // start network sampling .. 847 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED, null); 848 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 849 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 850 851 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 852 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 853 854 IntentFilter filter = new IntentFilter(); 855 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 856 mContext.registerReceiver( 857 new BroadcastReceiver() { 858 @Override 859 public void onReceive(Context context, Intent intent) { 860 String action = intent.getAction(); 861 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 862 mHandler.sendMessage(mHandler.obtainMessage 863 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 864 } 865 } 866 }, 867 new IntentFilter(filter)); 868 869 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 870 871 filter = new IntentFilter(); 872 filter.addAction(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 873 mContext.registerReceiver(mProvisioningReceiver, filter); 874 875 mAppOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE); 876 } 877 878 private synchronized int nextNetworkRequestId() { 879 return mNextNetworkRequestId++; 880 } 881 882 private synchronized int nextNetId() { 883 int netId = mNextNetId; 884 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 885 return netId; 886 } 887 888 /** 889 * Factory that creates {@link NetworkStateTracker} instances using given 890 * {@link NetworkConfig}. 891 * 892 * TODO - this is obsolete and will be deleted. It's replaced by the 893 * registerNetworkFactory call and protocol. 894 * @Deprecated in favor of registerNetworkFactory dynamic bindings 895 */ 896 public interface NetworkFactory { 897 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config); 898 } 899 900 private static class DefaultNetworkFactory implements NetworkFactory { 901 private final Context mContext; 902 private final Handler mTrackerHandler; 903 904 public DefaultNetworkFactory(Context context, Handler trackerHandler) { 905 mContext = context; 906 mTrackerHandler = trackerHandler; 907 } 908 909 @Override 910 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config) { 911 switch (config.radio) { 912 case TYPE_DUMMY: 913 return new DummyDataStateTracker(targetNetworkType, config.name); 914 case TYPE_BLUETOOTH: 915 return BluetoothTetheringDataTracker.getInstance(); 916 case TYPE_WIMAX: 917 return makeWimaxStateTracker(mContext, mTrackerHandler); 918 case TYPE_PROXY: 919 return new ProxyDataTracker(); 920 default: 921 throw new IllegalArgumentException( 922 "Trying to create a NetworkStateTracker for an unknown radio type: " 923 + config.radio); 924 } 925 } 926 } 927 928 /** 929 * Loads external WiMAX library and registers as system service, returning a 930 * {@link NetworkStateTracker} for WiMAX. Caller is still responsible for 931 * invoking {@link NetworkStateTracker#startMonitoring(Context, Handler)}. 932 */ 933 private static NetworkStateTracker makeWimaxStateTracker( 934 Context context, Handler trackerHandler) { 935 // Initialize Wimax 936 DexClassLoader wimaxClassLoader; 937 Class wimaxStateTrackerClass = null; 938 Class wimaxServiceClass = null; 939 Class wimaxManagerClass; 940 String wimaxJarLocation; 941 String wimaxLibLocation; 942 String wimaxManagerClassName; 943 String wimaxServiceClassName; 944 String wimaxStateTrackerClassName; 945 946 NetworkStateTracker wimaxStateTracker = null; 947 948 boolean isWimaxEnabled = context.getResources().getBoolean( 949 com.android.internal.R.bool.config_wimaxEnabled); 950 951 if (isWimaxEnabled) { 952 try { 953 wimaxJarLocation = context.getResources().getString( 954 com.android.internal.R.string.config_wimaxServiceJarLocation); 955 wimaxLibLocation = context.getResources().getString( 956 com.android.internal.R.string.config_wimaxNativeLibLocation); 957 wimaxManagerClassName = context.getResources().getString( 958 com.android.internal.R.string.config_wimaxManagerClassname); 959 wimaxServiceClassName = context.getResources().getString( 960 com.android.internal.R.string.config_wimaxServiceClassname); 961 wimaxStateTrackerClassName = context.getResources().getString( 962 com.android.internal.R.string.config_wimaxStateTrackerClassname); 963 964 if (DBG) log("wimaxJarLocation: " + wimaxJarLocation); 965 wimaxClassLoader = new DexClassLoader(wimaxJarLocation, 966 new ContextWrapper(context).getCacheDir().getAbsolutePath(), 967 wimaxLibLocation, ClassLoader.getSystemClassLoader()); 968 969 try { 970 wimaxManagerClass = wimaxClassLoader.loadClass(wimaxManagerClassName); 971 wimaxStateTrackerClass = wimaxClassLoader.loadClass(wimaxStateTrackerClassName); 972 wimaxServiceClass = wimaxClassLoader.loadClass(wimaxServiceClassName); 973 } catch (ClassNotFoundException ex) { 974 loge("Exception finding Wimax classes: " + ex.toString()); 975 return null; 976 } 977 } catch(Resources.NotFoundException ex) { 978 loge("Wimax Resources does not exist!!! "); 979 return null; 980 } 981 982 try { 983 if (DBG) log("Starting Wimax Service... "); 984 985 Constructor wmxStTrkrConst = wimaxStateTrackerClass.getConstructor 986 (new Class[] {Context.class, Handler.class}); 987 wimaxStateTracker = (NetworkStateTracker) wmxStTrkrConst.newInstance( 988 context, trackerHandler); 989 990 Constructor wmxSrvConst = wimaxServiceClass.getDeclaredConstructor 991 (new Class[] {Context.class, wimaxStateTrackerClass}); 992 wmxSrvConst.setAccessible(true); 993 IBinder svcInvoker = (IBinder)wmxSrvConst.newInstance(context, wimaxStateTracker); 994 wmxSrvConst.setAccessible(false); 995 996 ServiceManager.addService(WimaxManagerConstants.WIMAX_SERVICE, svcInvoker); 997 998 } catch(Exception ex) { 999 loge("Exception creating Wimax classes: " + ex.toString()); 1000 return null; 1001 } 1002 } else { 1003 loge("Wimax is not enabled or not added to the network attributes!!! "); 1004 return null; 1005 } 1006 1007 return wimaxStateTracker; 1008 } 1009 1010 private int getConnectivityChangeDelay() { 1011 final ContentResolver cr = mContext.getContentResolver(); 1012 1013 /** Check system properties for the default value then use secure settings value, if any. */ 1014 int defaultDelay = SystemProperties.getInt( 1015 "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY, 1016 ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT); 1017 return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY, 1018 defaultDelay); 1019 } 1020 1021 private boolean teardown(NetworkStateTracker netTracker) { 1022 if (netTracker.teardown()) { 1023 netTracker.setTeardownRequested(true); 1024 return true; 1025 } else { 1026 return false; 1027 } 1028 } 1029 1030 /** 1031 * Check if UID should be blocked from using the network represented by the 1032 * given {@link NetworkStateTracker}. 1033 */ 1034 private boolean isNetworkBlocked(int networkType, int uid) { 1035 final boolean networkCostly; 1036 final int uidRules; 1037 1038 LinkProperties lp = getLinkPropertiesForType(networkType); 1039 final String iface = (lp == null ? "" : lp.getInterfaceName()); 1040 synchronized (mRulesLock) { 1041 networkCostly = mMeteredIfaces.contains(iface); 1042 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1043 } 1044 1045 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 1046 return true; 1047 } 1048 1049 // no restrictive rules; network is visible 1050 return false; 1051 } 1052 1053 /** 1054 * Return a filtered {@link NetworkInfo}, potentially marked 1055 * {@link DetailedState#BLOCKED} based on 1056 * {@link #isNetworkBlocked}. 1057 */ 1058 private NetworkInfo getFilteredNetworkInfo(int networkType, int uid) { 1059 NetworkInfo info = getNetworkInfoForType(networkType); 1060 if (isNetworkBlocked(networkType, uid)) { 1061 // network is blocked; clone and override state 1062 info = new NetworkInfo(info); 1063 info.setDetailedState(DetailedState.BLOCKED, null, null); 1064 } 1065 if (mLockdownTracker != null) { 1066 info = mLockdownTracker.augmentNetworkInfo(info); 1067 } 1068 return info; 1069 } 1070 1071 /** 1072 * Return NetworkInfo for the active (i.e., connected) network interface. 1073 * It is assumed that at most one network is active at a time. If more 1074 * than one is active, it is indeterminate which will be returned. 1075 * @return the info for the active network, or {@code null} if none is 1076 * active 1077 */ 1078 @Override 1079 public NetworkInfo getActiveNetworkInfo() { 1080 enforceAccessPermission(); 1081 final int uid = Binder.getCallingUid(); 1082 return getNetworkInfo(mActiveDefaultNetwork, uid); 1083 } 1084 1085 // only called when the default request is satisfied 1086 private void updateActiveDefaultNetwork(NetworkAgentInfo nai) { 1087 if (nai != null) { 1088 mActiveDefaultNetwork = nai.networkInfo.getType(); 1089 } else { 1090 mActiveDefaultNetwork = TYPE_NONE; 1091 } 1092 } 1093 1094 /** 1095 * Find the first Provisioning network. 1096 * 1097 * @return NetworkInfo or null if none. 1098 */ 1099 private NetworkInfo getProvisioningNetworkInfo() { 1100 enforceAccessPermission(); 1101 1102 // Find the first Provisioning Network 1103 NetworkInfo provNi = null; 1104 for (NetworkInfo ni : getAllNetworkInfo()) { 1105 if (ni.isConnectedToProvisioningNetwork()) { 1106 provNi = ni; 1107 break; 1108 } 1109 } 1110 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 1111 return provNi; 1112 } 1113 1114 /** 1115 * Find the first Provisioning network or the ActiveDefaultNetwork 1116 * if there is no Provisioning network 1117 * 1118 * @return NetworkInfo or null if none. 1119 */ 1120 @Override 1121 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 1122 enforceAccessPermission(); 1123 1124 NetworkInfo provNi = getProvisioningNetworkInfo(); 1125 if (provNi == null) { 1126 final int uid = Binder.getCallingUid(); 1127 provNi = getNetworkInfo(mActiveDefaultNetwork, uid); 1128 } 1129 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 1130 return provNi; 1131 } 1132 1133 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1134 enforceAccessPermission(); 1135 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 1136 return getNetworkInfoForType(mActiveDefaultNetwork); 1137 } 1138 return null; 1139 } 1140 1141 @Override 1142 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1143 enforceConnectivityInternalPermission(); 1144 return getNetworkInfo(mActiveDefaultNetwork, uid); 1145 } 1146 1147 @Override 1148 public NetworkInfo getNetworkInfo(int networkType) { 1149 enforceAccessPermission(); 1150 final int uid = Binder.getCallingUid(); 1151 return getNetworkInfo(networkType, uid); 1152 } 1153 1154 private NetworkInfo getNetworkInfo(int networkType, int uid) { 1155 NetworkInfo info = null; 1156 if (isNetworkTypeValid(networkType)) { 1157 if (getNetworkInfoForType(networkType) != null) { 1158 info = getFilteredNetworkInfo(networkType, uid); 1159 } 1160 } 1161 return info; 1162 } 1163 1164 @Override 1165 public NetworkInfo[] getAllNetworkInfo() { 1166 enforceAccessPermission(); 1167 final int uid = Binder.getCallingUid(); 1168 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1169 synchronized (mRulesLock) { 1170 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1171 networkType++) { 1172 if (getNetworkInfoForType(networkType) != null) { 1173 result.add(getFilteredNetworkInfo(networkType, uid)); 1174 } 1175 } 1176 } 1177 return result.toArray(new NetworkInfo[result.size()]); 1178 } 1179 1180 @Override 1181 public boolean isNetworkSupported(int networkType) { 1182 enforceAccessPermission(); 1183 return (isNetworkTypeValid(networkType) && (getNetworkInfoForType(networkType) != null)); 1184 } 1185 1186 /** 1187 * Return LinkProperties for the active (i.e., connected) default 1188 * network interface. It is assumed that at most one default network 1189 * is active at a time. If more than one is active, it is indeterminate 1190 * which will be returned. 1191 * @return the ip properties for the active network, or {@code null} if 1192 * none is active 1193 */ 1194 @Override 1195 public LinkProperties getActiveLinkProperties() { 1196 return getLinkPropertiesForType(mActiveDefaultNetwork); 1197 } 1198 1199 @Override 1200 public LinkProperties getLinkPropertiesForType(int networkType) { 1201 enforceAccessPermission(); 1202 if (isNetworkTypeValid(networkType)) { 1203 return getLinkPropertiesForTypeInternal(networkType); 1204 } 1205 return null; 1206 } 1207 1208 // TODO - this should be ALL networks 1209 @Override 1210 public LinkProperties getLinkProperties(Network network) { 1211 enforceAccessPermission(); 1212 NetworkAgentInfo nai = mNetworkForNetId.get(network.netId); 1213 if (nai != null) return new LinkProperties(nai.linkProperties); 1214 return null; 1215 } 1216 1217 @Override 1218 public NetworkCapabilities getNetworkCapabilities(Network network) { 1219 enforceAccessPermission(); 1220 NetworkAgentInfo nai = mNetworkForNetId.get(network.netId); 1221 if (nai != null) return new NetworkCapabilities(nai.networkCapabilities); 1222 return null; 1223 } 1224 1225 @Override 1226 public NetworkState[] getAllNetworkState() { 1227 enforceAccessPermission(); 1228 final int uid = Binder.getCallingUid(); 1229 final ArrayList<NetworkState> result = Lists.newArrayList(); 1230 synchronized (mRulesLock) { 1231 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1232 networkType++) { 1233 if (getNetworkInfoForType(networkType) != null) { 1234 final NetworkInfo info = getFilteredNetworkInfo(networkType, uid); 1235 final LinkProperties lp = getLinkPropertiesForTypeInternal(networkType); 1236 final NetworkCapabilities netcap = getNetworkCapabilitiesForType(networkType); 1237 result.add(new NetworkState(info, lp, netcap)); 1238 } 1239 } 1240 } 1241 return result.toArray(new NetworkState[result.size()]); 1242 } 1243 1244 private NetworkState getNetworkStateUnchecked(int networkType) { 1245 if (isNetworkTypeValid(networkType)) { 1246 NetworkInfo info = getNetworkInfoForType(networkType); 1247 if (info != null) { 1248 return new NetworkState(info, 1249 getLinkPropertiesForTypeInternal(networkType), 1250 getNetworkCapabilitiesForType(networkType)); 1251 } 1252 } 1253 return null; 1254 } 1255 1256 @Override 1257 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1258 enforceAccessPermission(); 1259 1260 final long token = Binder.clearCallingIdentity(); 1261 try { 1262 final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork); 1263 if (state != null) { 1264 try { 1265 return mPolicyManager.getNetworkQuotaInfo(state); 1266 } catch (RemoteException e) { 1267 } 1268 } 1269 return null; 1270 } finally { 1271 Binder.restoreCallingIdentity(token); 1272 } 1273 } 1274 1275 @Override 1276 public boolean isActiveNetworkMetered() { 1277 enforceAccessPermission(); 1278 final long token = Binder.clearCallingIdentity(); 1279 try { 1280 return isNetworkMeteredUnchecked(mActiveDefaultNetwork); 1281 } finally { 1282 Binder.restoreCallingIdentity(token); 1283 } 1284 } 1285 1286 private boolean isNetworkMeteredUnchecked(int networkType) { 1287 final NetworkState state = getNetworkStateUnchecked(networkType); 1288 if (state != null) { 1289 try { 1290 return mPolicyManager.isNetworkMetered(state); 1291 } catch (RemoteException e) { 1292 } 1293 } 1294 return false; 1295 } 1296 1297 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1298 @Override 1299 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1300 int deviceType = Integer.parseInt(label); 1301 sendDataActivityBroadcast(deviceType, active, tsNanos); 1302 } 1303 }; 1304 1305 /** 1306 * Used to notice when the calling process dies so we can self-expire 1307 * 1308 * Also used to know if the process has cleaned up after itself when 1309 * our auto-expire timer goes off. The timer has a link to an object. 1310 * 1311 */ 1312 private class FeatureUser implements IBinder.DeathRecipient { 1313 int mNetworkType; 1314 String mFeature; 1315 IBinder mBinder; 1316 int mPid; 1317 int mUid; 1318 long mCreateTime; 1319 1320 FeatureUser(int type, String feature, IBinder binder) { 1321 super(); 1322 mNetworkType = type; 1323 mFeature = feature; 1324 mBinder = binder; 1325 mPid = getCallingPid(); 1326 mUid = getCallingUid(); 1327 mCreateTime = System.currentTimeMillis(); 1328 1329 try { 1330 mBinder.linkToDeath(this, 0); 1331 } catch (RemoteException e) { 1332 binderDied(); 1333 } 1334 } 1335 1336 void unlinkDeathRecipient() { 1337 mBinder.unlinkToDeath(this, 0); 1338 } 1339 1340 public void binderDied() { 1341 log("ConnectivityService FeatureUser binderDied(" + 1342 mNetworkType + ", " + mFeature + ", " + mBinder + "), created " + 1343 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1344 stopUsingNetworkFeature(this, false); 1345 } 1346 1347 public void expire() { 1348 if (VDBG) { 1349 log("ConnectivityService FeatureUser expire(" + 1350 mNetworkType + ", " + mFeature + ", " + mBinder +"), created " + 1351 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1352 } 1353 stopUsingNetworkFeature(this, false); 1354 } 1355 1356 public boolean isSameUser(FeatureUser u) { 1357 if (u == null) return false; 1358 1359 return isSameUser(u.mPid, u.mUid, u.mNetworkType, u.mFeature); 1360 } 1361 1362 public boolean isSameUser(int pid, int uid, int networkType, String feature) { 1363 if ((mPid == pid) && (mUid == uid) && (mNetworkType == networkType) && 1364 TextUtils.equals(mFeature, feature)) { 1365 return true; 1366 } 1367 return false; 1368 } 1369 1370 public String toString() { 1371 return "FeatureUser("+mNetworkType+","+mFeature+","+mPid+","+mUid+"), created " + 1372 (System.currentTimeMillis() - mCreateTime) + " mSec ago"; 1373 } 1374 } 1375 1376 // javadoc from interface 1377 public int startUsingNetworkFeature(int networkType, String feature, 1378 IBinder binder) { 1379 long startTime = 0; 1380 if (DBG) { 1381 startTime = SystemClock.elapsedRealtime(); 1382 } 1383 if (VDBG) { 1384 log("startUsingNetworkFeature for net " + networkType + ": " + feature + ", uid=" 1385 + Binder.getCallingUid()); 1386 } 1387 enforceChangePermission(); 1388 try { 1389 if (!ConnectivityManager.isNetworkTypeValid(networkType) || 1390 mNetConfigs[networkType] == null) { 1391 return PhoneConstants.APN_REQUEST_FAILED; 1392 } 1393 1394 FeatureUser f = new FeatureUser(networkType, feature, binder); 1395 1396 // TODO - move this into individual networktrackers 1397 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1398 1399 if (mLockdownEnabled) { 1400 // Since carrier APNs usually aren't available from VPN 1401 // endpoint, mark them as unavailable. 1402 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1403 } 1404 1405 if (mProtectedNetworks.contains(usedNetworkType)) { 1406 enforceConnectivityInternalPermission(); 1407 } 1408 1409 // if UID is restricted, don't allow them to bring up metered APNs 1410 final boolean networkMetered = isNetworkMeteredUnchecked(usedNetworkType); 1411 final int uidRules; 1412 synchronized (mRulesLock) { 1413 uidRules = mUidRules.get(Binder.getCallingUid(), RULE_ALLOW_ALL); 1414 } 1415 if (networkMetered && (uidRules & RULE_REJECT_METERED) != 0) { 1416 return PhoneConstants.APN_REQUEST_FAILED; 1417 } 1418 1419 NetworkStateTracker network = mNetTrackers[usedNetworkType]; 1420 if (network != null) { 1421 Integer currentPid = new Integer(getCallingPid()); 1422 if (usedNetworkType != networkType) { 1423 NetworkInfo ni = network.getNetworkInfo(); 1424 1425 if (ni.isAvailable() == false) { 1426 if (!TextUtils.equals(feature,Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 1427 if (DBG) log("special network not available ni=" + ni.getTypeName()); 1428 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1429 } else { 1430 // else make the attempt anyway - probably giving REQUEST_STARTED below 1431 if (DBG) { 1432 log("special network not available, but try anyway ni=" + 1433 ni.getTypeName()); 1434 } 1435 } 1436 } 1437 1438 int restoreTimer = getRestoreDefaultNetworkDelay(usedNetworkType); 1439 1440 synchronized(this) { 1441 boolean addToList = true; 1442 if (restoreTimer < 0) { 1443 // In case there is no timer is specified for the feature, 1444 // make sure we don't add duplicate entry with the same request. 1445 for (FeatureUser u : mFeatureUsers) { 1446 if (u.isSameUser(f)) { 1447 // Duplicate user is found. Do not add. 1448 addToList = false; 1449 break; 1450 } 1451 } 1452 } 1453 1454 if (addToList) mFeatureUsers.add(f); 1455 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1456 // this gets used for per-pid dns when connected 1457 mNetRequestersPids[usedNetworkType].add(currentPid); 1458 } 1459 } 1460 1461 if (restoreTimer >= 0) { 1462 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1463 EVENT_RESTORE_DEFAULT_NETWORK, f), restoreTimer); 1464 } 1465 1466 if ((ni.isConnectedOrConnecting() == true) && 1467 !network.isTeardownRequested()) { 1468 if (ni.isConnected() == true) { 1469 final long token = Binder.clearCallingIdentity(); 1470 try { 1471 // add the pid-specific dns 1472 handleDnsConfigurationChange(usedNetworkType); 1473 if (VDBG) log("special network already active"); 1474 } finally { 1475 Binder.restoreCallingIdentity(token); 1476 } 1477 return PhoneConstants.APN_ALREADY_ACTIVE; 1478 } 1479 if (VDBG) log("special network already connecting"); 1480 return PhoneConstants.APN_REQUEST_STARTED; 1481 } 1482 1483 // check if the radio in play can make another contact 1484 // assume if cannot for now 1485 1486 if (DBG) { 1487 log("startUsingNetworkFeature reconnecting to " + networkType + ": " + 1488 feature); 1489 } 1490 if (network.reconnect()) { 1491 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_STARTED"); 1492 return PhoneConstants.APN_REQUEST_STARTED; 1493 } else { 1494 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_FAILED"); 1495 return PhoneConstants.APN_REQUEST_FAILED; 1496 } 1497 } else { 1498 // need to remember this unsupported request so we respond appropriately on stop 1499 synchronized(this) { 1500 mFeatureUsers.add(f); 1501 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1502 // this gets used for per-pid dns when connected 1503 mNetRequestersPids[usedNetworkType].add(currentPid); 1504 } 1505 } 1506 if (DBG) log("startUsingNetworkFeature X: return -1 unsupported feature."); 1507 return -1; 1508 } 1509 } 1510 if (DBG) log("startUsingNetworkFeature X: return APN_TYPE_NOT_AVAILABLE"); 1511 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1512 } finally { 1513 if (DBG) { 1514 final long execTime = SystemClock.elapsedRealtime() - startTime; 1515 if (execTime > 250) { 1516 loge("startUsingNetworkFeature took too long: " + execTime + "ms"); 1517 } else { 1518 if (VDBG) log("startUsingNetworkFeature took " + execTime + "ms"); 1519 } 1520 } 1521 } 1522 } 1523 1524 // javadoc from interface 1525 public int stopUsingNetworkFeature(int networkType, String feature) { 1526 enforceChangePermission(); 1527 1528 int pid = getCallingPid(); 1529 int uid = getCallingUid(); 1530 1531 FeatureUser u = null; 1532 boolean found = false; 1533 1534 synchronized(this) { 1535 for (FeatureUser x : mFeatureUsers) { 1536 if (x.isSameUser(pid, uid, networkType, feature)) { 1537 u = x; 1538 found = true; 1539 break; 1540 } 1541 } 1542 } 1543 if (found && u != null) { 1544 if (VDBG) log("stopUsingNetworkFeature: X"); 1545 // stop regardless of how many other time this proc had called start 1546 return stopUsingNetworkFeature(u, true); 1547 } else { 1548 // none found! 1549 if (VDBG) log("stopUsingNetworkFeature: X not a live request, ignoring"); 1550 return 1; 1551 } 1552 } 1553 1554 private int stopUsingNetworkFeature(FeatureUser u, boolean ignoreDups) { 1555 int networkType = u.mNetworkType; 1556 String feature = u.mFeature; 1557 int pid = u.mPid; 1558 int uid = u.mUid; 1559 1560 NetworkStateTracker tracker = null; 1561 boolean callTeardown = false; // used to carry our decision outside of sync block 1562 1563 if (VDBG) { 1564 log("stopUsingNetworkFeature: net " + networkType + ": " + feature); 1565 } 1566 1567 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1568 if (DBG) { 1569 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1570 ", net is invalid"); 1571 } 1572 return -1; 1573 } 1574 1575 // need to link the mFeatureUsers list with the mNetRequestersPids state in this 1576 // sync block 1577 synchronized(this) { 1578 // check if this process still has an outstanding start request 1579 if (!mFeatureUsers.contains(u)) { 1580 if (VDBG) { 1581 log("stopUsingNetworkFeature: this process has no outstanding requests" + 1582 ", ignoring"); 1583 } 1584 return 1; 1585 } 1586 u.unlinkDeathRecipient(); 1587 mFeatureUsers.remove(mFeatureUsers.indexOf(u)); 1588 // If we care about duplicate requests, check for that here. 1589 // 1590 // This is done to support the extension of a request - the app 1591 // can request we start the network feature again and renew the 1592 // auto-shutoff delay. Normal "stop" calls from the app though 1593 // do not pay attention to duplicate requests - in effect the 1594 // API does not refcount and a single stop will counter multiple starts. 1595 if (ignoreDups == false) { 1596 for (FeatureUser x : mFeatureUsers) { 1597 if (x.isSameUser(u)) { 1598 if (VDBG) log("stopUsingNetworkFeature: dup is found, ignoring"); 1599 return 1; 1600 } 1601 } 1602 } 1603 1604 // TODO - move to individual network trackers 1605 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1606 1607 tracker = mNetTrackers[usedNetworkType]; 1608 if (tracker == null) { 1609 if (DBG) { 1610 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1611 " no known tracker for used net type " + usedNetworkType); 1612 } 1613 return -1; 1614 } 1615 if (usedNetworkType != networkType) { 1616 Integer currentPid = new Integer(pid); 1617 mNetRequestersPids[usedNetworkType].remove(currentPid); 1618 1619 final long token = Binder.clearCallingIdentity(); 1620 try { 1621 reassessPidDns(pid, true); 1622 } finally { 1623 Binder.restoreCallingIdentity(token); 1624 } 1625 flushVmDnsCache(); 1626 if (mNetRequestersPids[usedNetworkType].size() != 0) { 1627 if (VDBG) { 1628 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1629 " others still using it"); 1630 } 1631 return 1; 1632 } 1633 callTeardown = true; 1634 } else { 1635 if (DBG) { 1636 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1637 " not a known feature - dropping"); 1638 } 1639 } 1640 } 1641 1642 if (callTeardown) { 1643 if (DBG) { 1644 log("stopUsingNetworkFeature: teardown net " + networkType + ": " + feature); 1645 } 1646 tracker.teardown(); 1647 return 1; 1648 } else { 1649 return -1; 1650 } 1651 } 1652 1653 /** 1654 * Check if the address falls into any of currently running VPN's route's. 1655 */ 1656 private boolean isAddressUnderVpn(InetAddress address) { 1657 synchronized (mVpns) { 1658 synchronized (mRoutesLock) { 1659 int uid = UserHandle.getCallingUserId(); 1660 Vpn vpn = mVpns.get(uid); 1661 if (vpn == null) { 1662 return false; 1663 } 1664 1665 // Check if an exemption exists for this address. 1666 for (LinkAddress destination : mExemptAddresses) { 1667 if (!NetworkUtils.addressTypeMatches(address, destination.getAddress())) { 1668 continue; 1669 } 1670 1671 int prefix = destination.getPrefixLength(); 1672 InetAddress addrMasked = NetworkUtils.getNetworkPart(address, prefix); 1673 InetAddress destMasked = NetworkUtils.getNetworkPart(destination.getAddress(), 1674 prefix); 1675 1676 if (addrMasked.equals(destMasked)) { 1677 return false; 1678 } 1679 } 1680 1681 // Finally check if the address is covered by the VPN. 1682 return vpn.isAddressCovered(address); 1683 } 1684 } 1685 } 1686 1687 /** 1688 * @deprecated use requestRouteToHostAddress instead 1689 * 1690 * Ensure that a network route exists to deliver traffic to the specified 1691 * host via the specified network interface. 1692 * @param networkType the type of the network over which traffic to the 1693 * specified host is to be routed 1694 * @param hostAddress the IP address of the host to which the route is 1695 * desired 1696 * @return {@code true} on success, {@code false} on failure 1697 */ 1698 public boolean requestRouteToHost(int networkType, int hostAddress, String packageName) { 1699 InetAddress inetAddress = NetworkUtils.intToInetAddress(hostAddress); 1700 1701 if (inetAddress == null) { 1702 return false; 1703 } 1704 1705 return requestRouteToHostAddress(networkType, inetAddress.getAddress(), packageName); 1706 } 1707 1708 /** 1709 * Ensure that a network route exists to deliver traffic to the specified 1710 * host via the specified network interface. 1711 * @param networkType the type of the network over which traffic to the 1712 * specified host is to be routed 1713 * @param hostAddress the IP address of the host to which the route is 1714 * desired 1715 * @return {@code true} on success, {@code false} on failure 1716 */ 1717 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress, 1718 String packageName) { 1719 enforceChangePermission(); 1720 if (mProtectedNetworks.contains(networkType)) { 1721 enforceConnectivityInternalPermission(); 1722 } 1723 boolean exempt; 1724 InetAddress addr; 1725 try { 1726 addr = InetAddress.getByAddress(hostAddress); 1727 } catch (UnknownHostException e) { 1728 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1729 return false; 1730 } 1731 // System apps may request routes bypassing the VPN to keep other networks working. 1732 if (Binder.getCallingUid() == Process.SYSTEM_UID) { 1733 exempt = true; 1734 } else { 1735 mAppOpsManager.checkPackage(Binder.getCallingUid(), packageName); 1736 try { 1737 ApplicationInfo info = mContext.getPackageManager().getApplicationInfo(packageName, 1738 0); 1739 exempt = (info.flags & ApplicationInfo.FLAG_SYSTEM) != 0; 1740 } catch (NameNotFoundException e) { 1741 throw new IllegalArgumentException("Failed to find calling package details", e); 1742 } 1743 } 1744 1745 // Non-exempt routeToHost's can only be added if the host is not covered by the VPN. 1746 // This can be either because the VPN's routes do not cover the destination or a 1747 // system application added an exemption that covers this destination. 1748 if (!exempt && isAddressUnderVpn(addr)) { 1749 return false; 1750 } 1751 1752 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1753 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1754 return false; 1755 } 1756 1757 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1758 if (nai == null) { 1759 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1760 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1761 } else { 1762 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1763 } 1764 return false; 1765 } 1766 1767 DetailedState netState = nai.networkInfo.getDetailedState(); 1768 1769 if ((netState != DetailedState.CONNECTED && 1770 netState != DetailedState.CAPTIVE_PORTAL_CHECK)) { 1771 if (VDBG) { 1772 log("requestRouteToHostAddress on down network " 1773 + "(" + networkType + ") - dropped" 1774 + " netState=" + netState); 1775 } 1776 return false; 1777 } 1778 final int uid = Binder.getCallingUid(); 1779 final long token = Binder.clearCallingIdentity(); 1780 try { 1781 LinkProperties lp = nai.linkProperties; 1782 boolean ok = modifyRouteToAddress(lp, addr, ADD, TO_DEFAULT_TABLE, exempt, 1783 nai.network.netId, uid); 1784 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1785 return ok; 1786 } finally { 1787 Binder.restoreCallingIdentity(token); 1788 } 1789 } 1790 1791 private boolean addRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, 1792 boolean exempt, int netId) { 1793 return modifyRoute(p, r, 0, ADD, toDefaultTable, exempt, netId, false, UID_UNUSED); 1794 } 1795 1796 private boolean removeRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, int netId) { 1797 return modifyRoute(p, r, 0, REMOVE, toDefaultTable, UNEXEMPT, netId, false, UID_UNUSED); 1798 } 1799 1800 private boolean modifyRouteToAddress(LinkProperties lp, InetAddress addr, boolean doAdd, 1801 boolean toDefaultTable, boolean exempt, int netId, int uid) { 1802 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1803 if (bestRoute == null) { 1804 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1805 } else { 1806 String iface = bestRoute.getInterface(); 1807 if (bestRoute.getGateway().equals(addr)) { 1808 // if there is no better route, add the implied hostroute for our gateway 1809 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1810 } else { 1811 // if we will connect to this through another route, add a direct route 1812 // to it's gateway 1813 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1814 } 1815 } 1816 return modifyRoute(lp, bestRoute, 0, doAdd, toDefaultTable, exempt, netId, true, uid); 1817 } 1818 1819 /* 1820 * TODO: Clean all this stuff up. Once we have UID-based routing, stuff will break due to 1821 * incorrect tracking of mAddedRoutes, so a cleanup becomes necessary and urgent. But at 1822 * the same time, there'll be no more need to track mAddedRoutes or mExemptAddresses, 1823 * or even have the concept of an exempt address, or do things like "selectBestRoute", or 1824 * determine "default" vs "secondary" table, etc., so the cleanup becomes possible. 1825 */ 1826 private boolean modifyRoute(LinkProperties lp, RouteInfo r, int cycleCount, boolean doAdd, 1827 boolean toDefaultTable, boolean exempt, int netId, boolean legacy, int uid) { 1828 if ((lp == null) || (r == null)) { 1829 if (DBG) log("modifyRoute got unexpected null: " + lp + ", " + r); 1830 return false; 1831 } 1832 1833 if (cycleCount > MAX_HOSTROUTE_CYCLE_COUNT) { 1834 loge("Error modifying route - too much recursion"); 1835 return false; 1836 } 1837 1838 String ifaceName = r.getInterface(); 1839 if(ifaceName == null) { 1840 loge("Error modifying route - no interface name"); 1841 return false; 1842 } 1843 if (r.hasGateway()) { 1844 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), r.getGateway()); 1845 if (bestRoute != null) { 1846 if (bestRoute.getGateway().equals(r.getGateway())) { 1847 // if there is no better route, add the implied hostroute for our gateway 1848 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), ifaceName); 1849 } else { 1850 // if we will connect to our gateway through another route, add a direct 1851 // route to it's gateway 1852 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), 1853 bestRoute.getGateway(), 1854 ifaceName); 1855 } 1856 modifyRoute(lp, bestRoute, cycleCount+1, doAdd, toDefaultTable, exempt, netId, 1857 legacy, uid); 1858 } 1859 } 1860 if (doAdd) { 1861 if (VDBG) log("Adding " + r + " for interface " + ifaceName); 1862 try { 1863 if (toDefaultTable) { 1864 synchronized (mRoutesLock) { 1865 // only track default table - only one apps can effect 1866 mAddedRoutes.add(r); 1867 if (legacy) { 1868 mNetd.addLegacyRouteForNetId(netId, r, uid); 1869 } else { 1870 mNetd.addRoute(netId, r); 1871 } 1872 if (exempt) { 1873 LinkAddress dest = r.getDestinationLinkAddress(); 1874 if (!mExemptAddresses.contains(dest)) { 1875 mNetd.setHostExemption(dest); 1876 mExemptAddresses.add(dest); 1877 } 1878 } 1879 } 1880 } else { 1881 if (legacy) { 1882 mNetd.addLegacyRouteForNetId(netId, r, uid); 1883 } else { 1884 mNetd.addRoute(netId, r); 1885 } 1886 } 1887 } catch (Exception e) { 1888 // never crash - catch them all 1889 if (DBG) loge("Exception trying to add a route: " + e); 1890 return false; 1891 } 1892 } else { 1893 // if we remove this one and there are no more like it, then refcount==0 and 1894 // we can remove it from the table 1895 if (toDefaultTable) { 1896 synchronized (mRoutesLock) { 1897 mAddedRoutes.remove(r); 1898 if (mAddedRoutes.contains(r) == false) { 1899 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1900 try { 1901 if (legacy) { 1902 mNetd.removeLegacyRouteForNetId(netId, r, uid); 1903 } else { 1904 mNetd.removeRoute(netId, r); 1905 } 1906 LinkAddress dest = r.getDestinationLinkAddress(); 1907 if (mExemptAddresses.contains(dest)) { 1908 mNetd.clearHostExemption(dest); 1909 mExemptAddresses.remove(dest); 1910 } 1911 } catch (Exception e) { 1912 // never crash - catch them all 1913 if (VDBG) loge("Exception trying to remove a route: " + e); 1914 return false; 1915 } 1916 } else { 1917 if (VDBG) log("not removing " + r + " as it's still in use"); 1918 } 1919 } 1920 } else { 1921 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1922 try { 1923 if (legacy) { 1924 mNetd.removeLegacyRouteForNetId(netId, r, uid); 1925 } else { 1926 mNetd.removeRoute(netId, r); 1927 } 1928 } catch (Exception e) { 1929 // never crash - catch them all 1930 if (VDBG) loge("Exception trying to remove a route: " + e); 1931 return false; 1932 } 1933 } 1934 } 1935 return true; 1936 } 1937 1938 public void setDataDependency(int networkType, boolean met) { 1939 enforceConnectivityInternalPermission(); 1940 1941 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1942 (met ? ENABLED : DISABLED), networkType)); 1943 } 1944 1945 private void handleSetDependencyMet(int networkType, boolean met) { 1946 if (mNetTrackers[networkType] != null) { 1947 if (DBG) { 1948 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1949 } 1950 mNetTrackers[networkType].setDependencyMet(met); 1951 } 1952 } 1953 1954 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1955 @Override 1956 public void onUidRulesChanged(int uid, int uidRules) { 1957 // caller is NPMS, since we only register with them 1958 if (LOGD_RULES) { 1959 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1960 } 1961 1962 synchronized (mRulesLock) { 1963 // skip update when we've already applied rules 1964 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1965 if (oldRules == uidRules) return; 1966 1967 mUidRules.put(uid, uidRules); 1968 } 1969 1970 // TODO: notify UID when it has requested targeted updates 1971 } 1972 1973 @Override 1974 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1975 // caller is NPMS, since we only register with them 1976 if (LOGD_RULES) { 1977 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1978 } 1979 1980 synchronized (mRulesLock) { 1981 mMeteredIfaces.clear(); 1982 for (String iface : meteredIfaces) { 1983 mMeteredIfaces.add(iface); 1984 } 1985 } 1986 } 1987 1988 @Override 1989 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1990 // caller is NPMS, since we only register with them 1991 if (LOGD_RULES) { 1992 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1993 } 1994 1995 // kick off connectivity change broadcast for active network, since 1996 // global background policy change is radical. 1997 final int networkType = mActiveDefaultNetwork; 1998 if (isNetworkTypeValid(networkType)) { 1999 final NetworkStateTracker tracker = mNetTrackers[networkType]; 2000 if (tracker != null) { 2001 final NetworkInfo info = tracker.getNetworkInfo(); 2002 if (info != null && info.isConnected()) { 2003 sendConnectedBroadcast(info); 2004 } 2005 } 2006 } 2007 } 2008 }; 2009 2010 @Override 2011 public void setPolicyDataEnable(int networkType, boolean enabled) { 2012 // only someone like NPMS should only be calling us 2013 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 2014 2015 mHandler.sendMessage(mHandler.obtainMessage( 2016 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 2017 } 2018 2019 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 2020 // TODO - handle this passing to factories 2021// if (isNetworkTypeValid(networkType)) { 2022// final NetworkStateTracker tracker = mNetTrackers[networkType]; 2023// if (tracker != null) { 2024// tracker.setPolicyDataEnable(enabled); 2025// } 2026// } 2027 } 2028 2029 private void enforceAccessPermission() { 2030 mContext.enforceCallingOrSelfPermission( 2031 android.Manifest.permission.ACCESS_NETWORK_STATE, 2032 "ConnectivityService"); 2033 } 2034 2035 private void enforceChangePermission() { 2036 mContext.enforceCallingOrSelfPermission( 2037 android.Manifest.permission.CHANGE_NETWORK_STATE, 2038 "ConnectivityService"); 2039 } 2040 2041 // TODO Make this a special check when it goes public 2042 private void enforceTetherChangePermission() { 2043 mContext.enforceCallingOrSelfPermission( 2044 android.Manifest.permission.CHANGE_NETWORK_STATE, 2045 "ConnectivityService"); 2046 } 2047 2048 private void enforceTetherAccessPermission() { 2049 mContext.enforceCallingOrSelfPermission( 2050 android.Manifest.permission.ACCESS_NETWORK_STATE, 2051 "ConnectivityService"); 2052 } 2053 2054 private void enforceConnectivityInternalPermission() { 2055 mContext.enforceCallingOrSelfPermission( 2056 android.Manifest.permission.CONNECTIVITY_INTERNAL, 2057 "ConnectivityService"); 2058 } 2059 2060 private void enforceMarkNetworkSocketPermission() { 2061 //Media server special case 2062 if (Binder.getCallingUid() == Process.MEDIA_UID) { 2063 return; 2064 } 2065 mContext.enforceCallingOrSelfPermission( 2066 android.Manifest.permission.MARK_NETWORK_SOCKET, 2067 "ConnectivityService"); 2068 } 2069 2070 /** 2071 * Handle a {@code DISCONNECTED} event. If this pertains to the non-active 2072 * network, we ignore it. If it is for the active network, we send out a 2073 * broadcast. But first, we check whether it might be possible to connect 2074 * to a different network. 2075 * @param info the {@code NetworkInfo} for the network 2076 */ 2077 private void handleDisconnect(NetworkInfo info) { 2078 2079 int prevNetType = info.getType(); 2080 2081 mNetTrackers[prevNetType].setTeardownRequested(false); 2082 int thisNetId = mNetTrackers[prevNetType].getNetwork().netId; 2083 2084 // Remove idletimer previously setup in {@code handleConnect} 2085// Already in place in new function. This is dead code. 2086// if (mNetConfigs[prevNetType].isDefault()) { 2087// removeDataActivityTracking(prevNetType); 2088// } 2089 2090 /* 2091 * If the disconnected network is not the active one, then don't report 2092 * this as a loss of connectivity. What probably happened is that we're 2093 * getting the disconnect for a network that we explicitly disabled 2094 * in accordance with network preference policies. 2095 */ 2096 if (!mNetConfigs[prevNetType].isDefault()) { 2097 List<Integer> pids = mNetRequestersPids[prevNetType]; 2098 for (Integer pid : pids) { 2099 // will remove them because the net's no longer connected 2100 // need to do this now as only now do we know the pids and 2101 // can properly null things that are no longer referenced. 2102 reassessPidDns(pid.intValue(), false); 2103 } 2104 } 2105 2106 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 2107 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2108 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2109 if (info.isFailover()) { 2110 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2111 info.setFailover(false); 2112 } 2113 if (info.getReason() != null) { 2114 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2115 } 2116 if (info.getExtraInfo() != null) { 2117 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2118 info.getExtraInfo()); 2119 } 2120 2121 if (mNetConfigs[prevNetType].isDefault()) { 2122 tryFailover(prevNetType); 2123 if (mActiveDefaultNetwork != -1) { 2124 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2125 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 2126 } else { 2127 mDefaultInetConditionPublished = 0; // we're not connected anymore 2128 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2129 } 2130 } 2131 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2132 2133 // Reset interface if no other connections are using the same interface 2134 boolean doReset = true; 2135 LinkProperties linkProperties = mNetTrackers[prevNetType].getLinkProperties(); 2136 if (linkProperties != null) { 2137 String oldIface = linkProperties.getInterfaceName(); 2138 if (TextUtils.isEmpty(oldIface) == false) { 2139 for (NetworkStateTracker networkStateTracker : mNetTrackers) { 2140 if (networkStateTracker == null) continue; 2141 NetworkInfo networkInfo = networkStateTracker.getNetworkInfo(); 2142 if (networkInfo.isConnected() && networkInfo.getType() != prevNetType) { 2143 LinkProperties l = networkStateTracker.getLinkProperties(); 2144 if (l == null) continue; 2145 if (oldIface.equals(l.getInterfaceName())) { 2146 doReset = false; 2147 break; 2148 } 2149 } 2150 } 2151 } 2152 } 2153 2154 // do this before we broadcast the change 2155// Already done in new function. This is dead code. 2156// handleConnectivityChange(prevNetType, doReset); 2157 2158 final Intent immediateIntent = new Intent(intent); 2159 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 2160 sendStickyBroadcast(immediateIntent); 2161 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 2162 /* 2163 * If the failover network is already connected, then immediately send 2164 * out a followup broadcast indicating successful failover 2165 */ 2166 if (mActiveDefaultNetwork != -1) { 2167 sendConnectedBroadcastDelayed(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(), 2168 getConnectivityChangeDelay()); 2169 } 2170 try { 2171// mNetd.removeNetwork(thisNetId); 2172 } catch (Exception e) { 2173 loge("Exception removing network: " + e); 2174 } finally { 2175 mNetTrackers[prevNetType].setNetId(INVALID_NET_ID); 2176 } 2177 } 2178 2179 private void tryFailover(int prevNetType) { 2180 /* 2181 * If this is a default network, check if other defaults are available. 2182 * Try to reconnect on all available and let them hash it out when 2183 * more than one connects. 2184 */ 2185 if (mNetConfigs[prevNetType].isDefault()) { 2186 if (mActiveDefaultNetwork == prevNetType) { 2187 if (DBG) { 2188 log("tryFailover: set mActiveDefaultNetwork=-1, prevNetType=" + prevNetType); 2189 } 2190 mActiveDefaultNetwork = -1; 2191 try { 2192 mNetd.clearDefaultNetId(); 2193 } catch (Exception e) { 2194 loge("Exception clearing default network :" + e); 2195 } 2196 } 2197 2198 // don't signal a reconnect for anything lower or equal priority than our 2199 // current connected default 2200 // TODO - don't filter by priority now - nice optimization but risky 2201// int currentPriority = -1; 2202// if (mActiveDefaultNetwork != -1) { 2203// currentPriority = mNetConfigs[mActiveDefaultNetwork].mPriority; 2204// } 2205 2206 for (int checkType=0; checkType <= ConnectivityManager.MAX_NETWORK_TYPE; checkType++) { 2207 if (checkType == prevNetType) continue; 2208 if (mNetConfigs[checkType] == null) continue; 2209 if (!mNetConfigs[checkType].isDefault()) continue; 2210 if (mNetTrackers[checkType] == null) continue; 2211 2212// Enabling the isAvailable() optimization caused mobile to not get 2213// selected if it was in the middle of error handling. Specifically 2214// a moble connection that took 30 seconds to complete the DEACTIVATE_DATA_CALL 2215// would not be available and we wouldn't get connected to anything. 2216// So removing the isAvailable() optimization below for now. TODO: This 2217// optimization should work and we need to investigate why it doesn't work. 2218// This could be related to how DEACTIVATE_DATA_CALL is reporting its 2219// complete before it is really complete. 2220 2221// if (!mNetTrackers[checkType].isAvailable()) continue; 2222 2223// if (currentPriority >= mNetConfigs[checkType].mPriority) continue; 2224 2225 NetworkStateTracker checkTracker = mNetTrackers[checkType]; 2226 NetworkInfo checkInfo = checkTracker.getNetworkInfo(); 2227 if (!checkInfo.isConnectedOrConnecting() || checkTracker.isTeardownRequested()) { 2228 checkInfo.setFailover(true); 2229 checkTracker.reconnect(); 2230 } 2231 if (DBG) log("Attempting to switch to " + checkInfo.getTypeName()); 2232 } 2233 } 2234 } 2235 2236 public void sendConnectedBroadcast(NetworkInfo info) { 2237 enforceConnectivityInternalPermission(); 2238 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2239 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 2240 } 2241 2242 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 2243 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2244 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 2245 } 2246 2247 private void sendInetConditionBroadcast(NetworkInfo info) { 2248 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 2249 } 2250 2251 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 2252 if (mLockdownTracker != null) { 2253 info = mLockdownTracker.augmentNetworkInfo(info); 2254 } 2255 2256 Intent intent = new Intent(bcastType); 2257 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2258 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2259 if (info.isFailover()) { 2260 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2261 info.setFailover(false); 2262 } 2263 if (info.getReason() != null) { 2264 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2265 } 2266 if (info.getExtraInfo() != null) { 2267 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2268 info.getExtraInfo()); 2269 } 2270 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2271 return intent; 2272 } 2273 2274 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 2275 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 2276 } 2277 2278 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 2279 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 2280 } 2281 2282 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 2283 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 2284 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 2285 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 2286 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 2287 final long ident = Binder.clearCallingIdentity(); 2288 try { 2289 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 2290 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 2291 } finally { 2292 Binder.restoreCallingIdentity(ident); 2293 } 2294 } 2295 2296 private void sendStickyBroadcast(Intent intent) { 2297 synchronized(this) { 2298 if (!mSystemReady) { 2299 mInitialBroadcast = new Intent(intent); 2300 } 2301 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2302 if (VDBG) { 2303 log("sendStickyBroadcast: action=" + intent.getAction()); 2304 } 2305 2306 final long ident = Binder.clearCallingIdentity(); 2307 try { 2308 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2309 } finally { 2310 Binder.restoreCallingIdentity(ident); 2311 } 2312 } 2313 } 2314 2315 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 2316 if (delayMs <= 0) { 2317 sendStickyBroadcast(intent); 2318 } else { 2319 if (VDBG) { 2320 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 2321 + intent.getAction()); 2322 } 2323 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2324 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 2325 } 2326 } 2327 2328 void systemReady() { 2329 mCaptivePortalTracker = CaptivePortalTracker.makeCaptivePortalTracker(mContext, this); 2330 loadGlobalProxy(); 2331 2332 synchronized(this) { 2333 mSystemReady = true; 2334 if (mInitialBroadcast != null) { 2335 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 2336 mInitialBroadcast = null; 2337 } 2338 } 2339 // load the global proxy at startup 2340 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 2341 2342 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 2343 // for user to unlock device. 2344 if (!updateLockdownVpn()) { 2345 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 2346 mContext.registerReceiver(mUserPresentReceiver, filter); 2347 } 2348 } 2349 2350 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 2351 @Override 2352 public void onReceive(Context context, Intent intent) { 2353 // Try creating lockdown tracker, since user present usually means 2354 // unlocked keystore. 2355 if (updateLockdownVpn()) { 2356 mContext.unregisterReceiver(this); 2357 } 2358 } 2359 }; 2360 2361 private boolean isNewNetTypePreferredOverCurrentNetType(int type) { 2362 if (((type != mNetworkPreference) 2363 && (mNetConfigs[mActiveDefaultNetwork].priority > mNetConfigs[type].priority)) 2364 || (mNetworkPreference == mActiveDefaultNetwork)) { 2365 return false; 2366 } 2367 return true; 2368 } 2369 2370 private void handleConnect(NetworkInfo info) { 2371 final int newNetType = info.getType(); 2372 2373 // snapshot isFailover, because sendConnectedBroadcast() resets it 2374 boolean isFailover = info.isFailover(); 2375 final NetworkStateTracker thisNet = mNetTrackers[newNetType]; 2376 final String thisIface = thisNet.getLinkProperties().getInterfaceName(); 2377 2378 if (VDBG) { 2379 log("handleConnect: E newNetType=" + newNetType + " thisIface=" + thisIface 2380 + " isFailover" + isFailover); 2381 } 2382 2383 // if this is a default net and other default is running 2384 // kill the one not preferred 2385 if (mNetConfigs[newNetType].isDefault()) { 2386 if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != newNetType) { 2387 if (isNewNetTypePreferredOverCurrentNetType(newNetType)) { 2388 String teardownPolicy = SystemProperties.get("net.teardownPolicy"); 2389 if (TextUtils.equals(teardownPolicy, "keep") == false) { 2390 // tear down the other 2391 NetworkStateTracker otherNet = 2392 mNetTrackers[mActiveDefaultNetwork]; 2393 if (DBG) { 2394 log("Policy requires " + otherNet.getNetworkInfo().getTypeName() + 2395 " teardown"); 2396 } 2397 if (!teardown(otherNet)) { 2398 loge("Network declined teardown request"); 2399 teardown(thisNet); 2400 return; 2401 } 2402 } else { 2403 //TODO - remove 2404 loge("network teardown skipped due to net.teardownPolicy setting"); 2405 } 2406 } else { 2407 // don't accept this one 2408 if (VDBG) { 2409 log("Not broadcasting CONNECT_ACTION " + 2410 "to torn down network " + info.getTypeName()); 2411 } 2412 teardown(thisNet); 2413 return; 2414 } 2415 } 2416 int thisNetId = nextNetId(); 2417 thisNet.setNetId(thisNetId); 2418 try { 2419// mNetd.createNetwork(thisNetId, thisIface); 2420 } catch (Exception e) { 2421 loge("Exception creating network :" + e); 2422 teardown(thisNet); 2423 return; 2424 } 2425// Already in place in new function. This is dead code. 2426// setupDataActivityTracking(newNetType); 2427 synchronized (ConnectivityService.this) { 2428 // have a new default network, release the transition wakelock in a second 2429 // if it's held. The second pause is to allow apps to reconnect over the 2430 // new network 2431 if (mNetTransitionWakeLock.isHeld()) { 2432 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2433 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 2434 mNetTransitionWakeLockSerialNumber, 0), 2435 1000); 2436 } 2437 } 2438 mActiveDefaultNetwork = newNetType; 2439 try { 2440 mNetd.setDefaultNetId(thisNetId); 2441 } catch (Exception e) { 2442 loge("Exception setting default network :" + e); 2443 } 2444 // this will cause us to come up initially as unconnected and switching 2445 // to connected after our normal pause unless somebody reports us as reall 2446 // disconnected 2447 mDefaultInetConditionPublished = 0; 2448 mDefaultConnectionSequence++; 2449 mInetConditionChangeInFlight = false; 2450 // Don't do this - if we never sign in stay, grey 2451 //reportNetworkCondition(mActiveDefaultNetwork, 100); 2452 updateNetworkSettings(thisNet); 2453 } else { 2454 int thisNetId = nextNetId(); 2455 thisNet.setNetId(thisNetId); 2456 try { 2457// mNetd.createNetwork(thisNetId, thisIface); 2458 } catch (Exception e) { 2459 loge("Exception creating network :" + e); 2460 teardown(thisNet); 2461 return; 2462 } 2463 } 2464 thisNet.setTeardownRequested(false); 2465// Already in place in new function. This is dead code. 2466// updateMtuSizeSettings(thisNet); 2467// handleConnectivityChange(newNetType, false); 2468 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 2469 2470 // notify battery stats service about this network 2471 if (thisIface != null) { 2472 try { 2473 BatteryStatsService.getService().noteNetworkInterfaceType(thisIface, newNetType); 2474 } catch (RemoteException e) { 2475 // ignored; service lives in system_server 2476 } 2477 } 2478 } 2479 2480 /** @hide */ 2481 @Override 2482 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 2483 enforceConnectivityInternalPermission(); 2484 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 2485// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 2486 } 2487 2488 /** 2489 * Setup data activity tracking for the given network. 2490 * 2491 * Every {@code setupDataActivityTracking} should be paired with a 2492 * {@link #removeDataActivityTracking} for cleanup. 2493 */ 2494 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 2495 final String iface = networkAgent.linkProperties.getInterfaceName(); 2496 2497 final int timeout; 2498 int type = ConnectivityManager.TYPE_NONE; 2499 2500 if (networkAgent.networkCapabilities.hasTransport( 2501 NetworkCapabilities.TRANSPORT_CELLULAR)) { 2502 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2503 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 2504 5); 2505 type = ConnectivityManager.TYPE_MOBILE; 2506 } else if (networkAgent.networkCapabilities.hasTransport( 2507 NetworkCapabilities.TRANSPORT_WIFI)) { 2508 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2509 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 2510 0); 2511 type = ConnectivityManager.TYPE_WIFI; 2512 } else { 2513 // do not track any other networks 2514 timeout = 0; 2515 } 2516 2517 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 2518 try { 2519 mNetd.addIdleTimer(iface, timeout, type); 2520 } catch (Exception e) { 2521 // You shall not crash! 2522 loge("Exception in setupDataActivityTracking " + e); 2523 } 2524 } 2525 } 2526 2527 /** 2528 * Remove data activity tracking when network disconnects. 2529 */ 2530 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 2531 final String iface = networkAgent.linkProperties.getInterfaceName(); 2532 final NetworkCapabilities caps = networkAgent.networkCapabilities; 2533 2534 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 2535 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 2536 try { 2537 // the call fails silently if no idletimer setup for this interface 2538 mNetd.removeIdleTimer(iface); 2539 } catch (Exception e) { 2540 loge("Exception in removeDataActivityTracking " + e); 2541 } 2542 } 2543 } 2544 2545 /** 2546 * After a change in the connectivity state of a network. We're mainly 2547 * concerned with making sure that the list of DNS servers is set up 2548 * according to which networks are connected, and ensuring that the 2549 * right routing table entries exist. 2550 * 2551 * TODO - delete when we're sure all this functionallity is captured. 2552 */ 2553 private void handleConnectivityChange(int netType, LinkProperties curLp, boolean doReset) { 2554 int resetMask = doReset ? NetworkUtils.RESET_ALL_ADDRESSES : 0; 2555 boolean exempt = ConnectivityManager.isNetworkTypeExempt(netType); 2556 if (VDBG) { 2557 log("handleConnectivityChange: netType=" + netType + " doReset=" + doReset 2558 + " resetMask=" + resetMask); 2559 } 2560 2561 /* 2562 * If a non-default network is enabled, add the host routes that 2563 * will allow it's DNS servers to be accessed. 2564 */ 2565 handleDnsConfigurationChange(netType); 2566 2567 LinkProperties newLp = null; 2568 2569 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2570 newLp = mNetTrackers[netType].getLinkProperties(); 2571 if (VDBG) { 2572 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2573 " doReset=" + doReset + " resetMask=" + resetMask + 2574 "\n curLp=" + curLp + 2575 "\n newLp=" + newLp); 2576 } 2577 2578 if (curLp != null) { 2579 if (curLp.isIdenticalInterfaceName(newLp)) { 2580 CompareResult<LinkAddress> car = curLp.compareAddresses(newLp); 2581 if ((car.removed.size() != 0) || (car.added.size() != 0)) { 2582 for (LinkAddress linkAddr : car.removed) { 2583 if (linkAddr.getAddress() instanceof Inet4Address) { 2584 resetMask |= NetworkUtils.RESET_IPV4_ADDRESSES; 2585 } 2586 if (linkAddr.getAddress() instanceof Inet6Address) { 2587 resetMask |= NetworkUtils.RESET_IPV6_ADDRESSES; 2588 } 2589 } 2590 if (DBG) { 2591 log("handleConnectivityChange: addresses changed" + 2592 " linkProperty[" + netType + "]:" + " resetMask=" + resetMask + 2593 "\n car=" + car); 2594 } 2595 } else { 2596 if (VDBG) { 2597 log("handleConnectivityChange: addresses are the same reset per" + 2598 " doReset linkProperty[" + netType + "]:" + 2599 " resetMask=" + resetMask); 2600 } 2601 } 2602 } else { 2603 resetMask = NetworkUtils.RESET_ALL_ADDRESSES; 2604 if (DBG) { 2605 log("handleConnectivityChange: interface not not equivalent reset both" + 2606 " linkProperty[" + netType + "]:" + 2607 " resetMask=" + resetMask); 2608 } 2609 } 2610 } 2611 if (mNetConfigs[netType].isDefault()) { 2612 handleApplyDefaultProxy(newLp.getHttpProxy()); 2613 } 2614 } else { 2615 if (VDBG) { 2616 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2617 " doReset=" + doReset + " resetMask=" + resetMask + 2618 "\n curLp=" + curLp + 2619 "\n newLp= null"); 2620 } 2621 } 2622 mCurrentLinkProperties[netType] = newLp; 2623 boolean resetDns = updateRoutes(newLp, curLp, mNetConfigs[netType].isDefault(), exempt, 2624 mNetTrackers[netType].getNetwork().netId); 2625 2626 if (resetMask != 0 || resetDns) { 2627 if (VDBG) log("handleConnectivityChange: resetting"); 2628 if (curLp != null) { 2629 if (VDBG) log("handleConnectivityChange: resetting curLp=" + curLp); 2630 for (String iface : curLp.getAllInterfaceNames()) { 2631 if (TextUtils.isEmpty(iface) == false) { 2632 if (resetMask != 0) { 2633 if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")"); 2634 NetworkUtils.resetConnections(iface, resetMask); 2635 2636 // Tell VPN the interface is down. It is a temporary 2637 // but effective fix to make VPN aware of the change. 2638 if ((resetMask & NetworkUtils.RESET_IPV4_ADDRESSES) != 0) { 2639 synchronized(mVpns) { 2640 for (int i = 0; i < mVpns.size(); i++) { 2641 mVpns.valueAt(i).interfaceStatusChanged(iface, false); 2642 } 2643 } 2644 } 2645 } 2646 } else { 2647 loge("Can't reset connection for type "+netType); 2648 } 2649 } 2650 if (resetDns) { 2651 flushVmDnsCache(); 2652 if (VDBG) log("resetting DNS cache for type " + netType); 2653 try { 2654 mNetd.flushNetworkDnsCache(mNetTrackers[netType].getNetwork().netId); 2655 } catch (Exception e) { 2656 // never crash - catch them all 2657 if (DBG) loge("Exception resetting dns cache: " + e); 2658 } 2659 } 2660 } 2661 } 2662 2663 // TODO: Temporary notifying upstread change to Tethering. 2664 // @see bug/4455071 2665 /** Notify TetheringService if interface name has been changed. */ 2666 if (TextUtils.equals(mNetTrackers[netType].getNetworkInfo().getReason(), 2667 PhoneConstants.REASON_LINK_PROPERTIES_CHANGED)) { 2668 if (isTetheringSupported()) { 2669 mTethering.handleTetherIfaceChange(); 2670 } 2671 } 2672 } 2673 2674 /** 2675 * Add and remove routes using the old properties (null if not previously connected), 2676 * new properties (null if becoming disconnected). May even be double null, which 2677 * is a noop. 2678 * Uses isLinkDefault to determine if default routes should be set or conversely if 2679 * host routes should be set to the dns servers 2680 * returns a boolean indicating the routes changed 2681 */ 2682 private boolean updateRoutes(LinkProperties newLp, LinkProperties curLp, 2683 boolean isLinkDefault, boolean exempt, int netId) { 2684 Collection<RouteInfo> routesToAdd = null; 2685 CompareResult<InetAddress> dnsDiff = new CompareResult<InetAddress>(); 2686 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 2687 if (curLp != null) { 2688 // check for the delta between the current set and the new 2689 routeDiff = curLp.compareAllRoutes(newLp); 2690 dnsDiff = curLp.compareDnses(newLp); 2691 } else if (newLp != null) { 2692 routeDiff.added = newLp.getAllRoutes(); 2693 dnsDiff.added = newLp.getDnsServers(); 2694 } 2695 2696 boolean routesChanged = (routeDiff.removed.size() != 0 || routeDiff.added.size() != 0); 2697 2698 for (RouteInfo r : routeDiff.removed) { 2699 if (isLinkDefault || ! r.isDefaultRoute()) { 2700 if (VDBG) log("updateRoutes: default remove route r=" + r); 2701 removeRoute(curLp, r, TO_DEFAULT_TABLE, netId); 2702 } 2703 if (isLinkDefault == false) { 2704 // remove from a secondary route table 2705 removeRoute(curLp, r, TO_SECONDARY_TABLE, netId); 2706 } 2707 } 2708 2709 for (RouteInfo r : routeDiff.added) { 2710 if (isLinkDefault || ! r.isDefaultRoute()) { 2711 addRoute(newLp, r, TO_DEFAULT_TABLE, exempt, netId); 2712 } else { 2713 // add to a secondary route table 2714 addRoute(newLp, r, TO_SECONDARY_TABLE, UNEXEMPT, netId); 2715 2716 // many radios add a default route even when we don't want one. 2717 // remove the default route unless somebody else has asked for it 2718 String ifaceName = newLp.getInterfaceName(); 2719 synchronized (mRoutesLock) { 2720 if (!TextUtils.isEmpty(ifaceName) && !mAddedRoutes.contains(r)) { 2721 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 2722 try { 2723 mNetd.removeRoute(netId, r); 2724 } catch (Exception e) { 2725 // never crash - catch them all 2726 if (DBG) loge("Exception trying to remove a route: " + e); 2727 } 2728 } 2729 } 2730 } 2731 } 2732 2733 return routesChanged; 2734 } 2735 2736 /** 2737 * Reads the network specific MTU size from reources. 2738 * and set it on it's iface. 2739 */ 2740 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 2741 final String iface = newLp.getInterfaceName(); 2742 final int mtu = newLp.getMtu(); 2743 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 2744 if (VDBG) log("identical MTU - not setting"); 2745 return; 2746 } 2747 2748 if (mtu < 68 || mtu > 10000) { 2749 loge("Unexpected mtu value: " + mtu + ", " + iface); 2750 return; 2751 } 2752 2753 try { 2754 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 2755 mNetd.setMtu(iface, mtu); 2756 } catch (Exception e) { 2757 Slog.e(TAG, "exception in setMtu()" + e); 2758 } 2759 } 2760 2761 /** 2762 * Reads the network specific TCP buffer sizes from SystemProperties 2763 * net.tcp.buffersize.[default|wifi|umts|edge|gprs] and set them for system 2764 * wide use 2765 */ 2766 private void updateNetworkSettings(NetworkStateTracker nt) { 2767 String key = nt.getTcpBufferSizesPropName(); 2768 String bufferSizes = key == null ? null : SystemProperties.get(key); 2769 2770 if (TextUtils.isEmpty(bufferSizes)) { 2771 if (VDBG) log(key + " not found in system properties. Using defaults"); 2772 2773 // Setting to default values so we won't be stuck to previous values 2774 key = "net.tcp.buffersize.default"; 2775 bufferSizes = SystemProperties.get(key); 2776 } 2777 2778 // Set values in kernel 2779 if (bufferSizes.length() != 0) { 2780 if (VDBG) { 2781 log("Setting TCP values: [" + bufferSizes 2782 + "] which comes from [" + key + "]"); 2783 } 2784 setBufferSize(bufferSizes); 2785 } 2786 2787 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 2788 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 2789 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 2790 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 2791 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 2792 if (rwndValue != 0) { 2793 SystemProperties.set(sysctlKey, rwndValue.toString()); 2794 } 2795 } 2796 2797 /** 2798 * Writes TCP buffer sizes to /sys/kernel/ipv4/tcp_[r/w]mem_[min/def/max] 2799 * which maps to /proc/sys/net/ipv4/tcp_rmem and tcpwmem 2800 * 2801 * @param bufferSizes in the format of "readMin, readInitial, readMax, 2802 * writeMin, writeInitial, writeMax" 2803 */ 2804 private void setBufferSize(String bufferSizes) { 2805 try { 2806 String[] values = bufferSizes.split(","); 2807 2808 if (values.length == 6) { 2809 final String prefix = "/sys/kernel/ipv4/tcp_"; 2810 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 2811 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 2812 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 2813 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 2814 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 2815 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 2816 } else { 2817 loge("Invalid buffersize string: " + bufferSizes); 2818 } 2819 } catch (IOException e) { 2820 loge("Can't set tcp buffer sizes:" + e); 2821 } 2822 } 2823 2824 /** 2825 * Adjust the per-process dns entries (net.dns<x>.<pid>) based 2826 * on the highest priority active net which this process requested. 2827 * If there aren't any, clear it out 2828 */ 2829 private void reassessPidDns(int pid, boolean doBump) 2830 { 2831 if (VDBG) log("reassessPidDns for pid " + pid); 2832 Integer myPid = new Integer(pid); 2833 for(int i : mPriorityList) { 2834 if (mNetConfigs[i].isDefault()) { 2835 continue; 2836 } 2837 NetworkStateTracker nt = mNetTrackers[i]; 2838 if (nt.getNetworkInfo().isConnected() && 2839 !nt.isTeardownRequested()) { 2840 LinkProperties p = nt.getLinkProperties(); 2841 if (p == null) continue; 2842 if (mNetRequestersPids[i].contains(myPid)) { 2843 try { 2844 // TODO: Reimplement this via local variable in bionic. 2845 // mNetd.setDnsNetworkForPid(nt.getNetwork().netId, pid); 2846 } catch (Exception e) { 2847 Slog.e(TAG, "exception reasseses pid dns: " + e); 2848 } 2849 return; 2850 } 2851 } 2852 } 2853 // nothing found - delete 2854 try { 2855 // TODO: Reimplement this via local variable in bionic. 2856 // mNetd.clearDnsNetworkForPid(pid); 2857 } catch (Exception e) { 2858 Slog.e(TAG, "exception clear interface from pid: " + e); 2859 } 2860 } 2861 2862 private void flushVmDnsCache() { 2863 /* 2864 * Tell the VMs to toss their DNS caches 2865 */ 2866 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 2867 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 2868 /* 2869 * Connectivity events can happen before boot has completed ... 2870 */ 2871 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2872 final long ident = Binder.clearCallingIdentity(); 2873 try { 2874 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 2875 } finally { 2876 Binder.restoreCallingIdentity(ident); 2877 } 2878 } 2879 2880 // Caller must grab mDnsLock. 2881 private void updateDnsLocked(String network, int netId, 2882 Collection<InetAddress> dnses, String domains) { 2883 int last = 0; 2884 if (dnses.size() == 0 && mDefaultDns != null) { 2885 dnses = new ArrayList(); 2886 dnses.add(mDefaultDns); 2887 if (DBG) { 2888 loge("no dns provided for " + network + " - using " + mDefaultDns.getHostAddress()); 2889 } 2890 } 2891 2892 try { 2893 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), domains); 2894 2895 for (InetAddress dns : dnses) { 2896 ++last; 2897 String key = "net.dns" + last; 2898 String value = dns.getHostAddress(); 2899 SystemProperties.set(key, value); 2900 } 2901 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 2902 String key = "net.dns" + i; 2903 SystemProperties.set(key, ""); 2904 } 2905 mNumDnsEntries = last; 2906 } catch (Exception e) { 2907 loge("exception setting default dns interface: " + e); 2908 } 2909 } 2910 2911 private void handleDnsConfigurationChange(int netType) { 2912 // add default net's dns entries 2913 NetworkStateTracker nt = mNetTrackers[netType]; 2914 if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) { 2915 LinkProperties p = nt.getLinkProperties(); 2916 if (p == null) return; 2917 Collection<InetAddress> dnses = p.getDnsServers(); 2918 int netId = nt.getNetwork().netId; 2919 if (mNetConfigs[netType].isDefault()) { 2920 String network = nt.getNetworkInfo().getTypeName(); 2921 synchronized (mDnsLock) { 2922 updateDnsLocked(network, netId, dnses, p.getDomains()); 2923 } 2924 } else { 2925 try { 2926 mNetd.setDnsServersForNetwork(netId, 2927 NetworkUtils.makeStrings(dnses), p.getDomains()); 2928 } catch (Exception e) { 2929 if (DBG) loge("exception setting dns servers: " + e); 2930 } 2931 // set per-pid dns for attached secondary nets 2932 List<Integer> pids = mNetRequestersPids[netType]; 2933 for (Integer pid : pids) { 2934 try { 2935 // TODO: Reimplement this via local variable in bionic. 2936 // mNetd.setDnsNetworkForPid(netId, pid); 2937 } catch (Exception e) { 2938 Slog.e(TAG, "exception setting interface for pid: " + e); 2939 } 2940 } 2941 } 2942 flushVmDnsCache(); 2943 } 2944 } 2945 2946 @Override 2947 public int getRestoreDefaultNetworkDelay(int networkType) { 2948 String restoreDefaultNetworkDelayStr = SystemProperties.get( 2949 NETWORK_RESTORE_DELAY_PROP_NAME); 2950 if(restoreDefaultNetworkDelayStr != null && 2951 restoreDefaultNetworkDelayStr.length() != 0) { 2952 try { 2953 return Integer.valueOf(restoreDefaultNetworkDelayStr); 2954 } catch (NumberFormatException e) { 2955 } 2956 } 2957 // if the system property isn't set, use the value for the apn type 2958 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 2959 2960 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 2961 (mNetConfigs[networkType] != null)) { 2962 ret = mNetConfigs[networkType].restoreTime; 2963 } 2964 return ret; 2965 } 2966 2967 @Override 2968 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 2969 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 2970 if (mContext.checkCallingOrSelfPermission( 2971 android.Manifest.permission.DUMP) 2972 != PackageManager.PERMISSION_GRANTED) { 2973 pw.println("Permission Denial: can't dump ConnectivityService " + 2974 "from from pid=" + Binder.getCallingPid() + ", uid=" + 2975 Binder.getCallingUid()); 2976 return; 2977 } 2978 2979 pw.println("NetworkFactories for:"); 2980 pw.increaseIndent(); 2981 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2982 pw.println(nfi.name); 2983 } 2984 pw.decreaseIndent(); 2985 pw.println(); 2986 2987 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 2988 pw.print("Active default network: "); 2989 if (defaultNai == null) { 2990 pw.println("none"); 2991 } else { 2992 pw.println(defaultNai.network.netId); 2993 } 2994 pw.println(); 2995 2996 pw.println("Current Networks:"); 2997 pw.increaseIndent(); 2998 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2999 pw.println(nai.toString()); 3000 pw.increaseIndent(); 3001 pw.println("Requests:"); 3002 pw.increaseIndent(); 3003 for (int i = 0; i < nai.networkRequests.size(); i++) { 3004 pw.println(nai.networkRequests.valueAt(i).toString()); 3005 } 3006 pw.decreaseIndent(); 3007 pw.println("Lingered:"); 3008 pw.increaseIndent(); 3009 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 3010 pw.decreaseIndent(); 3011 pw.decreaseIndent(); 3012 } 3013 pw.decreaseIndent(); 3014 pw.println(); 3015 3016 pw.println("Network Requests:"); 3017 pw.increaseIndent(); 3018 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3019 pw.println(nri.toString()); 3020 } 3021 pw.println(); 3022 pw.decreaseIndent(); 3023 3024 synchronized (this) { 3025 pw.println("NetworkTranstionWakeLock is currently " + 3026 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 3027 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 3028 } 3029 pw.println(); 3030 3031 mTethering.dump(fd, pw, args); 3032 3033 if (mInetLog != null) { 3034 pw.println(); 3035 pw.println("Inet condition reports:"); 3036 pw.increaseIndent(); 3037 for(int i = 0; i < mInetLog.size(); i++) { 3038 pw.println(mInetLog.get(i)); 3039 } 3040 pw.decreaseIndent(); 3041 } 3042 } 3043 3044 // must be stateless - things change under us. 3045 private class NetworkStateTrackerHandler extends Handler { 3046 public NetworkStateTrackerHandler(Looper looper) { 3047 super(looper); 3048 } 3049 3050 @Override 3051 public void handleMessage(Message msg) { 3052 NetworkInfo info; 3053 switch (msg.what) { 3054 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 3055 handleAsyncChannelHalfConnect(msg); 3056 break; 3057 } 3058 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 3059 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3060 if (nai != null) nai.asyncChannel.disconnect(); 3061 break; 3062 } 3063 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 3064 handleAsyncChannelDisconnected(msg); 3065 break; 3066 } 3067 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 3068 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3069 if (nai == null) { 3070 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 3071 } else { 3072 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 3073 } 3074 break; 3075 } 3076 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 3077 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3078 if (nai == null) { 3079 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 3080 } else { 3081 if (VDBG) log("Update of Linkproperties for " + nai.name()); 3082 LinkProperties oldLp = nai.linkProperties; 3083 nai.linkProperties = (LinkProperties)msg.obj; 3084 updateLinkProperties(nai, oldLp); 3085 } 3086 break; 3087 } 3088 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 3089 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3090 if (nai == null) { 3091 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 3092 break; 3093 } 3094 info = (NetworkInfo) msg.obj; 3095 updateNetworkInfo(nai, info); 3096 break; 3097 } 3098 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 3099 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3100 if (nai == null) { 3101 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 3102 break; 3103 } 3104 Integer score = (Integer) msg.obj; 3105 if (score != null) updateNetworkScore(nai, score.intValue()); 3106 break; 3107 } 3108 case NetworkMonitor.EVENT_NETWORK_VALIDATED: { 3109 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 3110 handleConnectionValidated(nai); 3111 break; 3112 } 3113 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 3114 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 3115 handleLingerComplete(nai); 3116 break; 3117 } 3118 case NetworkStateTracker.EVENT_STATE_CHANGED: { 3119 info = (NetworkInfo) msg.obj; 3120 NetworkInfo.State state = info.getState(); 3121 3122 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 3123 (state == NetworkInfo.State.DISCONNECTED) || 3124 (state == NetworkInfo.State.SUSPENDED)) { 3125 log("ConnectivityChange for " + 3126 info.getTypeName() + ": " + 3127 state + "/" + info.getDetailedState()); 3128 } 3129 3130 // Since mobile has the notion of a network/apn that can be used for 3131 // provisioning we need to check every time we're connected as 3132 // CaptiveProtalTracker won't detected it because DCT doesn't report it 3133 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 3134 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 3135 // is received by MDST and sent here as EVENT_STATE_CHANGED. 3136 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 3137 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 3138 Settings.Global.DEVICE_PROVISIONED, 0)) 3139 && (((state == NetworkInfo.State.CONNECTED) 3140 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 3141 || info.isConnectedToProvisioningNetwork())) { 3142 log("ConnectivityChange checkMobileProvisioning for" 3143 + " TYPE_MOBILE or ProvisioningNetwork"); 3144 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 3145 } 3146 3147 EventLogTags.writeConnectivityStateChanged( 3148 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 3149 3150 if (info.isConnectedToProvisioningNetwork()) { 3151 /** 3152 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 3153 * for now its an in between network, its a network that 3154 * is actually a default network but we don't want it to be 3155 * announced as such to keep background applications from 3156 * trying to use it. It turns out that some still try so we 3157 * take the additional step of clearing any default routes 3158 * to the link that may have incorrectly setup by the lower 3159 * levels. 3160 */ 3161 LinkProperties lp = getLinkPropertiesForTypeInternal(info.getType()); 3162 if (DBG) { 3163 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 3164 } 3165 3166 // Clear any default routes setup by the radio so 3167 // any activity by applications trying to use this 3168 // connection will fail until the provisioning network 3169 // is enabled. 3170 for (RouteInfo r : lp.getRoutes()) { 3171 removeRoute(lp, r, TO_DEFAULT_TABLE, 3172 mNetTrackers[info.getType()].getNetwork().netId); 3173 } 3174 } else if (state == NetworkInfo.State.DISCONNECTED) { 3175 } else if (state == NetworkInfo.State.SUSPENDED) { 3176 } else if (state == NetworkInfo.State.CONNECTED) { 3177 // handleConnect(info); 3178 } 3179 if (mLockdownTracker != null) { 3180 mLockdownTracker.onNetworkInfoChanged(info); 3181 } 3182 break; 3183 } 3184 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 3185 info = (NetworkInfo) msg.obj; 3186 // TODO: Temporary allowing network configuration 3187 // change not resetting sockets. 3188 // @see bug/4455071 3189 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 3190 false); 3191 break; 3192 } 3193 case NetworkStateTracker.EVENT_NETWORK_SUBTYPE_CHANGED: { 3194 info = (NetworkInfo) msg.obj; 3195 int type = info.getType(); 3196 if (mNetConfigs[type].isDefault()) updateNetworkSettings(mNetTrackers[type]); 3197 break; 3198 } 3199 } 3200 } 3201 } 3202 3203 private void handleAsyncChannelHalfConnect(Message msg) { 3204 AsyncChannel ac = (AsyncChannel) msg.obj; 3205 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 3206 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3207 if (VDBG) log("NetworkFactory connected"); 3208 // A network factory has connected. Send it all current NetworkRequests. 3209 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3210 if (nri.isRequest == false) continue; 3211 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 3212 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 3213 (nai != null ? nai.currentScore : 0), 0, nri.request); 3214 } 3215 } else { 3216 loge("Error connecting NetworkFactory"); 3217 mNetworkFactoryInfos.remove(msg.obj); 3218 } 3219 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 3220 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3221 if (VDBG) log("NetworkAgent connected"); 3222 // A network agent has requested a connection. Establish the connection. 3223 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 3224 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 3225 } else { 3226 loge("Error connecting NetworkAgent"); 3227 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 3228 if (nai != null) { 3229 mNetworkForNetId.remove(nai.network.netId); 3230 mLegacyTypeTracker.remove(nai); 3231 } 3232 } 3233 } 3234 } 3235 private void handleAsyncChannelDisconnected(Message msg) { 3236 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3237 if (nai != null) { 3238 if (DBG) { 3239 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 3240 } 3241 // A network agent has disconnected. 3242 // Tell netd to clean up the configuration for this network 3243 // (routing rules, DNS, etc). 3244 try { 3245 mNetd.removeNetwork(nai.network.netId); 3246 } catch (Exception e) { 3247 loge("Exception removing network: " + e); 3248 } 3249 // TODO - if we move the logic to the network agent (have them disconnect 3250 // because they lost all their requests or because their score isn't good) 3251 // then they would disconnect organically, report their new state and then 3252 // disconnect the channel. 3253 if (nai.networkInfo.isConnected()) { 3254 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 3255 null, null); 3256 } 3257 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 3258 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 3259 mNetworkAgentInfos.remove(msg.replyTo); 3260 updateClat(null, nai.linkProperties, nai); 3261 mLegacyTypeTracker.remove(nai); 3262 mNetworkForNetId.remove(nai.network.netId); 3263 // Since we've lost the network, go through all the requests that 3264 // it was satisfying and see if any other factory can satisfy them. 3265 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 3266 for (int i = 0; i < nai.networkRequests.size(); i++) { 3267 NetworkRequest request = nai.networkRequests.valueAt(i); 3268 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 3269 if (VDBG) { 3270 log(" checking request " + request + ", currentNetwork = " + 3271 (currentNetwork != null ? currentNetwork.name() : "null")); 3272 } 3273 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 3274 mNetworkForRequestId.remove(request.requestId); 3275 sendUpdatedScoreToFactories(request, 0); 3276 NetworkAgentInfo alternative = null; 3277 for (Map.Entry entry : mNetworkAgentInfos.entrySet()) { 3278 NetworkAgentInfo existing = (NetworkAgentInfo)entry.getValue(); 3279 if (existing.networkInfo.isConnected() && 3280 request.networkCapabilities.satisfiedByNetworkCapabilities( 3281 existing.networkCapabilities) && 3282 (alternative == null || 3283 alternative.currentScore < existing.currentScore)) { 3284 alternative = existing; 3285 } 3286 } 3287 if (alternative != null && !toActivate.contains(alternative)) { 3288 toActivate.add(alternative); 3289 } 3290 } 3291 } 3292 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 3293 removeDataActivityTracking(nai); 3294 mActiveDefaultNetwork = ConnectivityManager.TYPE_NONE; 3295 } 3296 for (NetworkAgentInfo networkToActivate : toActivate) { 3297 networkToActivate.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 3298 } 3299 } 3300 } 3301 3302 private void handleRegisterNetworkRequest(Message msg) { 3303 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 3304 final NetworkCapabilities newCap = nri.request.networkCapabilities; 3305 int score = 0; 3306 3307 // Check for the best currently alive network that satisfies this request 3308 NetworkAgentInfo bestNetwork = null; 3309 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 3310 if (VDBG) log("handleRegisterNetworkRequest checking " + network.name()); 3311 if (newCap.satisfiedByNetworkCapabilities(network.networkCapabilities)) { 3312 if (VDBG) log("apparently satisfied. currentScore=" + network.currentScore); 3313 if ((bestNetwork == null) || bestNetwork.currentScore < network.currentScore) { 3314 bestNetwork = network; 3315 } 3316 } 3317 } 3318 if (bestNetwork != null) { 3319 if (VDBG) log("using " + bestNetwork.name()); 3320 bestNetwork.addRequest(nri.request); 3321 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 3322 int legacyType = nri.request.legacyType; 3323 if (legacyType != TYPE_NONE) { 3324 mLegacyTypeTracker.add(legacyType, bestNetwork); 3325 } 3326 notifyNetworkCallback(bestNetwork, nri); 3327 score = bestNetwork.currentScore; 3328 } 3329 mNetworkRequests.put(nri.request, nri); 3330 if (msg.what == EVENT_REGISTER_NETWORK_REQUEST) { 3331 if (DBG) log("sending new NetworkRequest to factories"); 3332 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3333 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 3334 0, nri.request); 3335 } 3336 } 3337 } 3338 3339 private void handleReleaseNetworkRequest(NetworkRequest request) { 3340 if (DBG) log("releasing NetworkRequest " + request); 3341 NetworkRequestInfo nri = mNetworkRequests.remove(request); 3342 if (nri != null) { 3343 // tell the network currently servicing this that it's no longer interested 3344 NetworkAgentInfo affectedNetwork = mNetworkForRequestId.get(nri.request.requestId); 3345 if (affectedNetwork != null) { 3346 mNetworkForRequestId.remove(nri.request.requestId); 3347 affectedNetwork.networkRequests.remove(nri.request.requestId); 3348 if (VDBG) { 3349 log(" Removing from current network " + affectedNetwork.name() + ", leaving " + 3350 affectedNetwork.networkRequests.size() + " requests."); 3351 } 3352 } 3353 3354 if (nri.isRequest) { 3355 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3356 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 3357 nri.request); 3358 } 3359 3360 if (affectedNetwork != null) { 3361 // check if this network still has live requests - otherwise, tear down 3362 // TODO - probably push this to the NF/NA 3363 boolean keep = false; 3364 for (int i = 0; i < affectedNetwork.networkRequests.size(); i++) { 3365 NetworkRequest r = affectedNetwork.networkRequests.valueAt(i); 3366 if (mNetworkRequests.get(r).isRequest) { 3367 keep = true; 3368 break; 3369 } 3370 } 3371 if (keep == false) { 3372 if (DBG) log("no live requests for " + affectedNetwork.name() + 3373 "; disconnecting"); 3374 affectedNetwork.asyncChannel.disconnect(); 3375 } 3376 } 3377 } 3378 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 3379 } 3380 } 3381 3382 private class InternalHandler extends Handler { 3383 public InternalHandler(Looper looper) { 3384 super(looper); 3385 } 3386 3387 @Override 3388 public void handleMessage(Message msg) { 3389 NetworkInfo info; 3390 switch (msg.what) { 3391 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 3392 String causedBy = null; 3393 synchronized (ConnectivityService.this) { 3394 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 3395 mNetTransitionWakeLock.isHeld()) { 3396 mNetTransitionWakeLock.release(); 3397 causedBy = mNetTransitionWakeLockCausedBy; 3398 } 3399 } 3400 if (causedBy != null) { 3401 log("NetTransition Wakelock for " + causedBy + " released by timeout"); 3402 } 3403 break; 3404 } 3405 case EVENT_RESTORE_DEFAULT_NETWORK: { 3406 FeatureUser u = (FeatureUser)msg.obj; 3407 u.expire(); 3408 break; 3409 } 3410 case EVENT_INET_CONDITION_CHANGE: { 3411 int netType = msg.arg1; 3412 int condition = msg.arg2; 3413 handleInetConditionChange(netType, condition); 3414 break; 3415 } 3416 case EVENT_INET_CONDITION_HOLD_END: { 3417 int netType = msg.arg1; 3418 int sequence = msg.arg2; 3419 handleInetConditionHoldEnd(netType, sequence); 3420 break; 3421 } 3422 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 3423 handleDeprecatedGlobalHttpProxy(); 3424 break; 3425 } 3426 case EVENT_SET_DEPENDENCY_MET: { 3427 boolean met = (msg.arg1 == ENABLED); 3428 handleSetDependencyMet(msg.arg2, met); 3429 break; 3430 } 3431 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 3432 Intent intent = (Intent)msg.obj; 3433 sendStickyBroadcast(intent); 3434 break; 3435 } 3436 case EVENT_SET_POLICY_DATA_ENABLE: { 3437 final int networkType = msg.arg1; 3438 final boolean enabled = msg.arg2 == ENABLED; 3439 handleSetPolicyDataEnable(networkType, enabled); 3440 break; 3441 } 3442 case EVENT_VPN_STATE_CHANGED: { 3443 if (mLockdownTracker != null) { 3444 mLockdownTracker.onVpnStateChanged((NetworkInfo) msg.obj); 3445 } 3446 break; 3447 } 3448 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 3449 int tag = mEnableFailFastMobileDataTag.get(); 3450 if (msg.arg1 == tag) { 3451 MobileDataStateTracker mobileDst = 3452 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3453 if (mobileDst != null) { 3454 mobileDst.setEnableFailFastMobileData(msg.arg2); 3455 } 3456 } else { 3457 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 3458 + " != tag:" + tag); 3459 } 3460 break; 3461 } 3462 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 3463 handleNetworkSamplingTimeout(); 3464 break; 3465 } 3466 case EVENT_PROXY_HAS_CHANGED: { 3467 handleApplyDefaultProxy((ProxyInfo)msg.obj); 3468 break; 3469 } 3470 case EVENT_REGISTER_NETWORK_FACTORY: { 3471 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 3472 break; 3473 } 3474 case EVENT_UNREGISTER_NETWORK_FACTORY: { 3475 handleUnregisterNetworkFactory((Messenger)msg.obj); 3476 break; 3477 } 3478 case EVENT_REGISTER_NETWORK_AGENT: { 3479 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 3480 break; 3481 } 3482 case EVENT_REGISTER_NETWORK_REQUEST: 3483 case EVENT_REGISTER_NETWORK_LISTENER: { 3484 handleRegisterNetworkRequest(msg); 3485 break; 3486 } 3487 case EVENT_RELEASE_NETWORK_REQUEST: { 3488 handleReleaseNetworkRequest((NetworkRequest) msg.obj); 3489 break; 3490 } 3491 } 3492 } 3493 } 3494 3495 // javadoc from interface 3496 public int tether(String iface) { 3497 enforceTetherChangePermission(); 3498 3499 if (isTetheringSupported()) { 3500 return mTethering.tether(iface); 3501 } else { 3502 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3503 } 3504 } 3505 3506 // javadoc from interface 3507 public int untether(String iface) { 3508 enforceTetherChangePermission(); 3509 3510 if (isTetheringSupported()) { 3511 return mTethering.untether(iface); 3512 } else { 3513 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3514 } 3515 } 3516 3517 // javadoc from interface 3518 public int getLastTetherError(String iface) { 3519 enforceTetherAccessPermission(); 3520 3521 if (isTetheringSupported()) { 3522 return mTethering.getLastTetherError(iface); 3523 } else { 3524 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3525 } 3526 } 3527 3528 // TODO - proper iface API for selection by property, inspection, etc 3529 public String[] getTetherableUsbRegexs() { 3530 enforceTetherAccessPermission(); 3531 if (isTetheringSupported()) { 3532 return mTethering.getTetherableUsbRegexs(); 3533 } else { 3534 return new String[0]; 3535 } 3536 } 3537 3538 public String[] getTetherableWifiRegexs() { 3539 enforceTetherAccessPermission(); 3540 if (isTetheringSupported()) { 3541 return mTethering.getTetherableWifiRegexs(); 3542 } else { 3543 return new String[0]; 3544 } 3545 } 3546 3547 public String[] getTetherableBluetoothRegexs() { 3548 enforceTetherAccessPermission(); 3549 if (isTetheringSupported()) { 3550 return mTethering.getTetherableBluetoothRegexs(); 3551 } else { 3552 return new String[0]; 3553 } 3554 } 3555 3556 public int setUsbTethering(boolean enable) { 3557 enforceTetherChangePermission(); 3558 if (isTetheringSupported()) { 3559 return mTethering.setUsbTethering(enable); 3560 } else { 3561 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3562 } 3563 } 3564 3565 // TODO - move iface listing, queries, etc to new module 3566 // javadoc from interface 3567 public String[] getTetherableIfaces() { 3568 enforceTetherAccessPermission(); 3569 return mTethering.getTetherableIfaces(); 3570 } 3571 3572 public String[] getTetheredIfaces() { 3573 enforceTetherAccessPermission(); 3574 return mTethering.getTetheredIfaces(); 3575 } 3576 3577 public String[] getTetheringErroredIfaces() { 3578 enforceTetherAccessPermission(); 3579 return mTethering.getErroredIfaces(); 3580 } 3581 3582 // if ro.tether.denied = true we default to no tethering 3583 // gservices could set the secure setting to 1 though to enable it on a build where it 3584 // had previously been turned off. 3585 public boolean isTetheringSupported() { 3586 enforceTetherAccessPermission(); 3587 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 3588 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 3589 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0); 3590 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 3591 mTethering.getTetherableWifiRegexs().length != 0 || 3592 mTethering.getTetherableBluetoothRegexs().length != 0) && 3593 mTethering.getUpstreamIfaceTypes().length != 0); 3594 } 3595 3596 // An API NetworkStateTrackers can call when they lose their network. 3597 // This will automatically be cleared after X seconds or a network becomes CONNECTED, 3598 // whichever happens first. The timer is started by the first caller and not 3599 // restarted by subsequent callers. 3600 public void requestNetworkTransitionWakelock(String forWhom) { 3601 enforceConnectivityInternalPermission(); 3602 synchronized (this) { 3603 if (mNetTransitionWakeLock.isHeld()) return; 3604 mNetTransitionWakeLockSerialNumber++; 3605 mNetTransitionWakeLock.acquire(); 3606 mNetTransitionWakeLockCausedBy = forWhom; 3607 } 3608 mHandler.sendMessageDelayed(mHandler.obtainMessage( 3609 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 3610 mNetTransitionWakeLockSerialNumber, 0), 3611 mNetTransitionWakeLockTimeout); 3612 return; 3613 } 3614 3615 // 100 percent is full good, 0 is full bad. 3616 public void reportInetCondition(int networkType, int percentage) { 3617 if (VDBG) log("reportNetworkCondition(" + networkType + ", " + percentage + ")"); 3618 mContext.enforceCallingOrSelfPermission( 3619 android.Manifest.permission.STATUS_BAR, 3620 "ConnectivityService"); 3621 3622 if (DBG) { 3623 int pid = getCallingPid(); 3624 int uid = getCallingUid(); 3625 String s = pid + "(" + uid + ") reports inet is " + 3626 (percentage > 50 ? "connected" : "disconnected") + " (" + percentage + ") on " + 3627 "network Type " + networkType + " at " + GregorianCalendar.getInstance().getTime(); 3628 mInetLog.add(s); 3629 while(mInetLog.size() > INET_CONDITION_LOG_MAX_SIZE) { 3630 mInetLog.remove(0); 3631 } 3632 } 3633 mHandler.sendMessage(mHandler.obtainMessage( 3634 EVENT_INET_CONDITION_CHANGE, networkType, percentage)); 3635 } 3636 3637 public void reportBadNetwork(Network network) { 3638 //TODO 3639 } 3640 3641 private void handleInetConditionChange(int netType, int condition) { 3642 if (mActiveDefaultNetwork == -1) { 3643 if (DBG) log("handleInetConditionChange: no active default network - ignore"); 3644 return; 3645 } 3646 if (mActiveDefaultNetwork != netType) { 3647 if (DBG) log("handleInetConditionChange: net=" + netType + 3648 " != default=" + mActiveDefaultNetwork + " - ignore"); 3649 return; 3650 } 3651 if (VDBG) { 3652 log("handleInetConditionChange: net=" + 3653 netType + ", condition=" + condition + 3654 ",mActiveDefaultNetwork=" + mActiveDefaultNetwork); 3655 } 3656 mDefaultInetCondition = condition; 3657 int delay; 3658 if (mInetConditionChangeInFlight == false) { 3659 if (VDBG) log("handleInetConditionChange: starting a change hold"); 3660 // setup a new hold to debounce this 3661 if (mDefaultInetCondition > 50) { 3662 delay = Settings.Global.getInt(mContext.getContentResolver(), 3663 Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY, 500); 3664 } else { 3665 delay = Settings.Global.getInt(mContext.getContentResolver(), 3666 Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 3000); 3667 } 3668 mInetConditionChangeInFlight = true; 3669 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_INET_CONDITION_HOLD_END, 3670 mActiveDefaultNetwork, mDefaultConnectionSequence), delay); 3671 } else { 3672 // we've set the new condition, when this hold ends that will get picked up 3673 if (VDBG) log("handleInetConditionChange: currently in hold - not setting new end evt"); 3674 } 3675 } 3676 3677 private void handleInetConditionHoldEnd(int netType, int sequence) { 3678 if (DBG) { 3679 log("handleInetConditionHoldEnd: net=" + netType + 3680 ", condition=" + mDefaultInetCondition + 3681 ", published condition=" + mDefaultInetConditionPublished); 3682 } 3683 mInetConditionChangeInFlight = false; 3684 3685 if (mActiveDefaultNetwork == -1) { 3686 if (DBG) log("handleInetConditionHoldEnd: no active default network - ignoring"); 3687 return; 3688 } 3689 if (mDefaultConnectionSequence != sequence) { 3690 if (DBG) log("handleInetConditionHoldEnd: event hold for obsolete network - ignoring"); 3691 return; 3692 } 3693 // TODO: Figure out why this optimization sometimes causes a 3694 // change in mDefaultInetCondition to be missed and the 3695 // UI to not be updated. 3696 //if (mDefaultInetConditionPublished == mDefaultInetCondition) { 3697 // if (DBG) log("no change in condition - aborting"); 3698 // return; 3699 //} 3700 NetworkInfo networkInfo = getNetworkInfoForType(mActiveDefaultNetwork); 3701 if (networkInfo.isConnected() == false) { 3702 if (DBG) log("handleInetConditionHoldEnd: default network not connected - ignoring"); 3703 return; 3704 } 3705 mDefaultInetConditionPublished = mDefaultInetCondition; 3706 sendInetConditionBroadcast(networkInfo); 3707 return; 3708 } 3709 3710 public ProxyInfo getProxy() { 3711 // this information is already available as a world read/writable jvm property 3712 // so this API change wouldn't have a benifit. It also breaks the passing 3713 // of proxy info to all the JVMs. 3714 // enforceAccessPermission(); 3715 synchronized (mProxyLock) { 3716 ProxyInfo ret = mGlobalProxy; 3717 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 3718 return ret; 3719 } 3720 } 3721 3722 public void setGlobalProxy(ProxyInfo proxyProperties) { 3723 enforceConnectivityInternalPermission(); 3724 3725 synchronized (mProxyLock) { 3726 if (proxyProperties == mGlobalProxy) return; 3727 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 3728 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 3729 3730 String host = ""; 3731 int port = 0; 3732 String exclList = ""; 3733 String pacFileUrl = ""; 3734 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 3735 (proxyProperties.getPacFileUrl() != null))) { 3736 if (!proxyProperties.isValid()) { 3737 if (DBG) 3738 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3739 return; 3740 } 3741 mGlobalProxy = new ProxyInfo(proxyProperties); 3742 host = mGlobalProxy.getHost(); 3743 port = mGlobalProxy.getPort(); 3744 exclList = mGlobalProxy.getExclusionListAsString(); 3745 if (proxyProperties.getPacFileUrl() != null) { 3746 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 3747 } 3748 } else { 3749 mGlobalProxy = null; 3750 } 3751 ContentResolver res = mContext.getContentResolver(); 3752 final long token = Binder.clearCallingIdentity(); 3753 try { 3754 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 3755 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 3756 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 3757 exclList); 3758 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 3759 } finally { 3760 Binder.restoreCallingIdentity(token); 3761 } 3762 } 3763 3764 if (mGlobalProxy == null) { 3765 proxyProperties = mDefaultProxy; 3766 } 3767 sendProxyBroadcast(proxyProperties); 3768 } 3769 3770 private void loadGlobalProxy() { 3771 ContentResolver res = mContext.getContentResolver(); 3772 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 3773 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 3774 String exclList = Settings.Global.getString(res, 3775 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 3776 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 3777 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 3778 ProxyInfo proxyProperties; 3779 if (!TextUtils.isEmpty(pacFileUrl)) { 3780 proxyProperties = new ProxyInfo(pacFileUrl); 3781 } else { 3782 proxyProperties = new ProxyInfo(host, port, exclList); 3783 } 3784 if (!proxyProperties.isValid()) { 3785 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3786 return; 3787 } 3788 3789 synchronized (mProxyLock) { 3790 mGlobalProxy = proxyProperties; 3791 } 3792 } 3793 } 3794 3795 public ProxyInfo getGlobalProxy() { 3796 // this information is already available as a world read/writable jvm property 3797 // so this API change wouldn't have a benifit. It also breaks the passing 3798 // of proxy info to all the JVMs. 3799 // enforceAccessPermission(); 3800 synchronized (mProxyLock) { 3801 return mGlobalProxy; 3802 } 3803 } 3804 3805 private void handleApplyDefaultProxy(ProxyInfo proxy) { 3806 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3807 && (proxy.getPacFileUrl() == null)) { 3808 proxy = null; 3809 } 3810 synchronized (mProxyLock) { 3811 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3812 if (mDefaultProxy == proxy) return; // catches repeated nulls 3813 if (proxy != null && !proxy.isValid()) { 3814 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3815 return; 3816 } 3817 3818 // This call could be coming from the PacManager, containing the port of the local 3819 // proxy. If this new proxy matches the global proxy then copy this proxy to the 3820 // global (to get the correct local port), and send a broadcast. 3821 // TODO: Switch PacManager to have its own message to send back rather than 3822 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 3823 if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null) 3824 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 3825 mGlobalProxy = proxy; 3826 sendProxyBroadcast(mGlobalProxy); 3827 return; 3828 } 3829 mDefaultProxy = proxy; 3830 3831 if (mGlobalProxy != null) return; 3832 if (!mDefaultProxyDisabled) { 3833 sendProxyBroadcast(proxy); 3834 } 3835 } 3836 } 3837 3838 private void handleDeprecatedGlobalHttpProxy() { 3839 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3840 Settings.Global.HTTP_PROXY); 3841 if (!TextUtils.isEmpty(proxy)) { 3842 String data[] = proxy.split(":"); 3843 if (data.length == 0) { 3844 return; 3845 } 3846 3847 String proxyHost = data[0]; 3848 int proxyPort = 8080; 3849 if (data.length > 1) { 3850 try { 3851 proxyPort = Integer.parseInt(data[1]); 3852 } catch (NumberFormatException e) { 3853 return; 3854 } 3855 } 3856 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 3857 setGlobalProxy(p); 3858 } 3859 } 3860 3861 private void sendProxyBroadcast(ProxyInfo proxy) { 3862 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 3863 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3864 if (DBG) log("sending Proxy Broadcast for " + proxy); 3865 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3866 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3867 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3868 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3869 final long ident = Binder.clearCallingIdentity(); 3870 try { 3871 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3872 } finally { 3873 Binder.restoreCallingIdentity(ident); 3874 } 3875 } 3876 3877 private static class SettingsObserver extends ContentObserver { 3878 private int mWhat; 3879 private Handler mHandler; 3880 SettingsObserver(Handler handler, int what) { 3881 super(handler); 3882 mHandler = handler; 3883 mWhat = what; 3884 } 3885 3886 void observe(Context context) { 3887 ContentResolver resolver = context.getContentResolver(); 3888 resolver.registerContentObserver(Settings.Global.getUriFor( 3889 Settings.Global.HTTP_PROXY), false, this); 3890 } 3891 3892 @Override 3893 public void onChange(boolean selfChange) { 3894 mHandler.obtainMessage(mWhat).sendToTarget(); 3895 } 3896 } 3897 3898 private static void log(String s) { 3899 Slog.d(TAG, s); 3900 } 3901 3902 private static void loge(String s) { 3903 Slog.e(TAG, s); 3904 } 3905 3906 int convertFeatureToNetworkType(int networkType, String feature) { 3907 int usedNetworkType = networkType; 3908 3909 if(networkType == ConnectivityManager.TYPE_MOBILE) { 3910 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 3911 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 3912 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 3913 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 3914 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 3915 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 3916 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 3917 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 3918 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 3919 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 3920 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 3921 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 3922 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 3923 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 3924 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 3925 } else { 3926 Slog.e(TAG, "Can't match any mobile netTracker!"); 3927 } 3928 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 3929 if (TextUtils.equals(feature, "p2p")) { 3930 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 3931 } else { 3932 Slog.e(TAG, "Can't match any wifi netTracker!"); 3933 } 3934 } else { 3935 Slog.e(TAG, "Unexpected network type"); 3936 } 3937 return usedNetworkType; 3938 } 3939 3940 private static <T> T checkNotNull(T value, String message) { 3941 if (value == null) { 3942 throw new NullPointerException(message); 3943 } 3944 return value; 3945 } 3946 3947 /** 3948 * Protect a socket from VPN routing rules. This method is used by 3949 * VpnBuilder and not available in ConnectivityManager. Permissions 3950 * are checked in Vpn class. 3951 * @hide 3952 */ 3953 @Override 3954 public boolean protectVpn(ParcelFileDescriptor socket) { 3955 throwIfLockdownEnabled(); 3956 try { 3957 int type = mActiveDefaultNetwork; 3958 int user = UserHandle.getUserId(Binder.getCallingUid()); 3959 if (ConnectivityManager.isNetworkTypeValid(type) && mNetTrackers[type] != null) { 3960 synchronized(mVpns) { 3961 mVpns.get(user).protect(socket); 3962 } 3963 return true; 3964 } 3965 } catch (Exception e) { 3966 // ignore 3967 } finally { 3968 try { 3969 socket.close(); 3970 } catch (Exception e) { 3971 // ignore 3972 } 3973 } 3974 return false; 3975 } 3976 3977 /** 3978 * Prepare for a VPN application. This method is used by VpnDialogs 3979 * and not available in ConnectivityManager. Permissions are checked 3980 * in Vpn class. 3981 * @hide 3982 */ 3983 @Override 3984 public boolean prepareVpn(String oldPackage, String newPackage) { 3985 throwIfLockdownEnabled(); 3986 int user = UserHandle.getUserId(Binder.getCallingUid()); 3987 synchronized(mVpns) { 3988 return mVpns.get(user).prepare(oldPackage, newPackage); 3989 } 3990 } 3991 3992 @Override 3993 public void markSocketAsUser(ParcelFileDescriptor socket, int uid) { 3994 enforceMarkNetworkSocketPermission(); 3995 final long token = Binder.clearCallingIdentity(); 3996 try { 3997 int mark = mNetd.getMarkForUid(uid); 3998 // Clear the mark on the socket if no mark is needed to prevent socket reuse issues 3999 if (mark == -1) { 4000 mark = 0; 4001 } 4002 NetworkUtils.markSocket(socket.getFd(), mark); 4003 } catch (RemoteException e) { 4004 } finally { 4005 Binder.restoreCallingIdentity(token); 4006 } 4007 } 4008 4009 /** 4010 * Configure a TUN interface and return its file descriptor. Parameters 4011 * are encoded and opaque to this class. This method is used by VpnBuilder 4012 * and not available in ConnectivityManager. Permissions are checked in 4013 * Vpn class. 4014 * @hide 4015 */ 4016 @Override 4017 public ParcelFileDescriptor establishVpn(VpnConfig config) { 4018 throwIfLockdownEnabled(); 4019 int user = UserHandle.getUserId(Binder.getCallingUid()); 4020 synchronized(mVpns) { 4021 return mVpns.get(user).establish(config); 4022 } 4023 } 4024 4025 /** 4026 * Start legacy VPN, controlling native daemons as needed. Creates a 4027 * secondary thread to perform connection work, returning quickly. 4028 */ 4029 @Override 4030 public void startLegacyVpn(VpnProfile profile) { 4031 throwIfLockdownEnabled(); 4032 final LinkProperties egress = getActiveLinkProperties(); 4033 if (egress == null) { 4034 throw new IllegalStateException("Missing active network connection"); 4035 } 4036 int user = UserHandle.getUserId(Binder.getCallingUid()); 4037 synchronized(mVpns) { 4038 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 4039 } 4040 } 4041 4042 /** 4043 * Return the information of the ongoing legacy VPN. This method is used 4044 * by VpnSettings and not available in ConnectivityManager. Permissions 4045 * are checked in Vpn class. 4046 * @hide 4047 */ 4048 @Override 4049 public LegacyVpnInfo getLegacyVpnInfo() { 4050 throwIfLockdownEnabled(); 4051 int user = UserHandle.getUserId(Binder.getCallingUid()); 4052 synchronized(mVpns) { 4053 return mVpns.get(user).getLegacyVpnInfo(); 4054 } 4055 } 4056 4057 /** 4058 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 4059 * not available in ConnectivityManager. 4060 * Permissions are checked in Vpn class. 4061 * @hide 4062 */ 4063 @Override 4064 public VpnConfig getVpnConfig() { 4065 int user = UserHandle.getUserId(Binder.getCallingUid()); 4066 synchronized(mVpns) { 4067 return mVpns.get(user).getVpnConfig(); 4068 } 4069 } 4070 4071 /** 4072 * Callback for VPN subsystem. Currently VPN is not adapted to the service 4073 * through NetworkStateTracker since it works differently. For example, it 4074 * needs to override DNS servers but never takes the default routes. It 4075 * relies on another data network, and it could keep existing connections 4076 * alive after reconnecting, switching between networks, or even resuming 4077 * from deep sleep. Calls from applications should be done synchronously 4078 * to avoid race conditions. As these are all hidden APIs, refactoring can 4079 * be done whenever a better abstraction is developed. 4080 */ 4081 public class VpnCallback { 4082 private VpnCallback() { 4083 } 4084 4085 public void onStateChanged(NetworkInfo info) { 4086 mHandler.obtainMessage(EVENT_VPN_STATE_CHANGED, info).sendToTarget(); 4087 } 4088 4089 public void override(String iface, List<String> dnsServers, List<String> searchDomains) { 4090 if (dnsServers == null) { 4091 restore(); 4092 return; 4093 } 4094 4095 // Convert DNS servers into addresses. 4096 List<InetAddress> addresses = new ArrayList<InetAddress>(); 4097 for (String address : dnsServers) { 4098 // Double check the addresses and remove invalid ones. 4099 try { 4100 addresses.add(InetAddress.parseNumericAddress(address)); 4101 } catch (Exception e) { 4102 // ignore 4103 } 4104 } 4105 if (addresses.isEmpty()) { 4106 restore(); 4107 return; 4108 } 4109 4110 // Concatenate search domains into a string. 4111 StringBuilder buffer = new StringBuilder(); 4112 if (searchDomains != null) { 4113 for (String domain : searchDomains) { 4114 buffer.append(domain).append(' '); 4115 } 4116 } 4117 String domains = buffer.toString().trim(); 4118 4119 // Apply DNS changes. 4120 synchronized (mDnsLock) { 4121 // TODO: Re-enable this when the netId of the VPN is known. 4122 // updateDnsLocked("VPN", netId, addresses, domains); 4123 } 4124 4125 // Temporarily disable the default proxy (not global). 4126 synchronized (mProxyLock) { 4127 mDefaultProxyDisabled = true; 4128 if (mGlobalProxy == null && mDefaultProxy != null) { 4129 sendProxyBroadcast(null); 4130 } 4131 } 4132 4133 // TODO: support proxy per network. 4134 } 4135 4136 public void restore() { 4137 synchronized (mProxyLock) { 4138 mDefaultProxyDisabled = false; 4139 if (mGlobalProxy == null && mDefaultProxy != null) { 4140 sendProxyBroadcast(mDefaultProxy); 4141 } 4142 } 4143 } 4144 4145 public void protect(ParcelFileDescriptor socket) { 4146 try { 4147 final int mark = mNetd.getMarkForProtect(); 4148 NetworkUtils.markSocket(socket.getFd(), mark); 4149 } catch (RemoteException e) { 4150 } 4151 } 4152 4153 public void setRoutes(String interfaze, List<RouteInfo> routes) { 4154 for (RouteInfo route : routes) { 4155 try { 4156 mNetd.setMarkedForwardingRoute(interfaze, route); 4157 } catch (RemoteException e) { 4158 } 4159 } 4160 } 4161 4162 public void setMarkedForwarding(String interfaze) { 4163 try { 4164 mNetd.setMarkedForwarding(interfaze); 4165 } catch (RemoteException e) { 4166 } 4167 } 4168 4169 public void clearMarkedForwarding(String interfaze) { 4170 try { 4171 mNetd.clearMarkedForwarding(interfaze); 4172 } catch (RemoteException e) { 4173 } 4174 } 4175 4176 public void addUserForwarding(String interfaze, int uid, boolean forwardDns) { 4177 int uidStart = uid * UserHandle.PER_USER_RANGE; 4178 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 4179 addUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 4180 } 4181 4182 public void clearUserForwarding(String interfaze, int uid, boolean forwardDns) { 4183 int uidStart = uid * UserHandle.PER_USER_RANGE; 4184 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 4185 clearUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 4186 } 4187 4188 public void addUidForwarding(String interfaze, int uidStart, int uidEnd, 4189 boolean forwardDns) { 4190 // TODO: Re-enable this when the netId of the VPN is known. 4191 // try { 4192 // mNetd.setUidRangeRoute(netId, uidStart, uidEnd, forwardDns); 4193 // } catch (RemoteException e) { 4194 // } 4195 4196 } 4197 4198 public void clearUidForwarding(String interfaze, int uidStart, int uidEnd, 4199 boolean forwardDns) { 4200 // TODO: Re-enable this when the netId of the VPN is known. 4201 // try { 4202 // mNetd.clearUidRangeRoute(interfaze, uidStart, uidEnd); 4203 // } catch (RemoteException e) { 4204 // } 4205 4206 } 4207 } 4208 4209 @Override 4210 public boolean updateLockdownVpn() { 4211 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 4212 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 4213 return false; 4214 } 4215 4216 // Tear down existing lockdown if profile was removed 4217 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 4218 if (mLockdownEnabled) { 4219 if (!mKeyStore.isUnlocked()) { 4220 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 4221 return false; 4222 } 4223 4224 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 4225 final VpnProfile profile = VpnProfile.decode( 4226 profileName, mKeyStore.get(Credentials.VPN + profileName)); 4227 int user = UserHandle.getUserId(Binder.getCallingUid()); 4228 synchronized(mVpns) { 4229 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 4230 profile)); 4231 } 4232 } else { 4233 setLockdownTracker(null); 4234 } 4235 4236 return true; 4237 } 4238 4239 /** 4240 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 4241 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 4242 */ 4243 private void setLockdownTracker(LockdownVpnTracker tracker) { 4244 // Shutdown any existing tracker 4245 final LockdownVpnTracker existing = mLockdownTracker; 4246 mLockdownTracker = null; 4247 if (existing != null) { 4248 existing.shutdown(); 4249 } 4250 4251 try { 4252 if (tracker != null) { 4253 mNetd.setFirewallEnabled(true); 4254 mNetd.setFirewallInterfaceRule("lo", true); 4255 mLockdownTracker = tracker; 4256 mLockdownTracker.init(); 4257 } else { 4258 mNetd.setFirewallEnabled(false); 4259 } 4260 } catch (RemoteException e) { 4261 // ignored; NMS lives inside system_server 4262 } 4263 } 4264 4265 private void throwIfLockdownEnabled() { 4266 if (mLockdownEnabled) { 4267 throw new IllegalStateException("Unavailable in lockdown mode"); 4268 } 4269 } 4270 4271 public void supplyMessenger(int networkType, Messenger messenger) { 4272 enforceConnectivityInternalPermission(); 4273 4274 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 4275 mNetTrackers[networkType].supplyMessenger(messenger); 4276 } 4277 } 4278 4279 public int findConnectionTypeForIface(String iface) { 4280 enforceConnectivityInternalPermission(); 4281 4282 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 4283 for (NetworkStateTracker tracker : mNetTrackers) { 4284 if (tracker != null) { 4285 LinkProperties lp = tracker.getLinkProperties(); 4286 if (lp != null && iface.equals(lp.getInterfaceName())) { 4287 return tracker.getNetworkInfo().getType(); 4288 } 4289 } 4290 } 4291 return ConnectivityManager.TYPE_NONE; 4292 } 4293 4294 /** 4295 * Have mobile data fail fast if enabled. 4296 * 4297 * @param enabled DctConstants.ENABLED/DISABLED 4298 */ 4299 private void setEnableFailFastMobileData(int enabled) { 4300 int tag; 4301 4302 if (enabled == DctConstants.ENABLED) { 4303 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 4304 } else { 4305 tag = mEnableFailFastMobileDataTag.get(); 4306 } 4307 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 4308 enabled)); 4309 } 4310 4311 private boolean isMobileDataStateTrackerReady() { 4312 MobileDataStateTracker mdst = 4313 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4314 return (mdst != null) && (mdst.isReady()); 4315 } 4316 4317 /** 4318 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 4319 */ 4320 4321 /** 4322 * No connection was possible to the network. 4323 * This is NOT a warm sim. 4324 */ 4325 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 4326 4327 /** 4328 * A connection was made to the internet, all is well. 4329 * This is NOT a warm sim. 4330 */ 4331 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 4332 4333 /** 4334 * A connection was made but no dns server was available to resolve a name to address. 4335 * This is NOT a warm sim since provisioning network is supported. 4336 */ 4337 private static final int CMP_RESULT_CODE_NO_DNS = 2; 4338 4339 /** 4340 * A connection was made but could not open a TCP connection. 4341 * This is NOT a warm sim since provisioning network is supported. 4342 */ 4343 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 4344 4345 /** 4346 * A connection was made but there was a redirection, we appear to be in walled garden. 4347 * This is an indication of a warm sim on a mobile network such as T-Mobile. 4348 */ 4349 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 4350 4351 /** 4352 * The mobile network is a provisioning network. 4353 * This is an indication of a warm sim on a mobile network such as AT&T. 4354 */ 4355 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 4356 4357 /** 4358 * The mobile network is provisioning 4359 */ 4360 private static final int CMP_RESULT_CODE_IS_PROVISIONING = 6; 4361 4362 private AtomicBoolean mIsProvisioningNetwork = new AtomicBoolean(false); 4363 private AtomicBoolean mIsStartingProvisioning = new AtomicBoolean(false); 4364 4365 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 4366 4367 @Override 4368 public int checkMobileProvisioning(int suggestedTimeOutMs) { 4369 int timeOutMs = -1; 4370 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 4371 enforceConnectivityInternalPermission(); 4372 4373 final long token = Binder.clearCallingIdentity(); 4374 try { 4375 timeOutMs = suggestedTimeOutMs; 4376 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 4377 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 4378 } 4379 4380 // Check that mobile networks are supported 4381 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 4382 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 4383 if (DBG) log("checkMobileProvisioning: X no mobile network"); 4384 return timeOutMs; 4385 } 4386 4387 // If we're already checking don't do it again 4388 // TODO: Add a queue of results... 4389 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 4390 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 4391 return timeOutMs; 4392 } 4393 4394 // Start off with mobile notification off 4395 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4396 4397 CheckMp checkMp = new CheckMp(mContext, this); 4398 CheckMp.CallBack cb = new CheckMp.CallBack() { 4399 @Override 4400 void onComplete(Integer result) { 4401 if (DBG) log("CheckMp.onComplete: result=" + result); 4402 NetworkInfo ni = 4403 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 4404 switch(result) { 4405 case CMP_RESULT_CODE_CONNECTABLE: 4406 case CMP_RESULT_CODE_NO_CONNECTION: 4407 case CMP_RESULT_CODE_NO_DNS: 4408 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 4409 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 4410 break; 4411 } 4412 case CMP_RESULT_CODE_REDIRECTED: { 4413 if (DBG) log("CheckMp.onComplete: warm sim"); 4414 String url = getMobileProvisioningUrl(); 4415 if (TextUtils.isEmpty(url)) { 4416 url = getMobileRedirectedProvisioningUrl(); 4417 } 4418 if (TextUtils.isEmpty(url) == false) { 4419 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 4420 setProvNotificationVisible(true, 4421 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4422 url); 4423 } else { 4424 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 4425 } 4426 break; 4427 } 4428 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 4429 String url = getMobileProvisioningUrl(); 4430 if (TextUtils.isEmpty(url) == false) { 4431 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 4432 setProvNotificationVisible(true, 4433 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4434 url); 4435 // Mark that we've got a provisioning network and 4436 // Disable Mobile Data until user actually starts provisioning. 4437 mIsProvisioningNetwork.set(true); 4438 MobileDataStateTracker mdst = (MobileDataStateTracker) 4439 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4440 4441 // Disable radio until user starts provisioning 4442 mdst.setRadio(false); 4443 } else { 4444 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 4445 } 4446 break; 4447 } 4448 case CMP_RESULT_CODE_IS_PROVISIONING: { 4449 // FIXME: Need to know when provisioning is done. Probably we can 4450 // check the completion status if successful we're done if we 4451 // "timedout" or still connected to provisioning APN turn off data? 4452 if (DBG) log("CheckMp.onComplete: provisioning started"); 4453 mIsStartingProvisioning.set(false); 4454 break; 4455 } 4456 default: { 4457 loge("CheckMp.onComplete: ignore unexpected result=" + result); 4458 break; 4459 } 4460 } 4461 mIsCheckingMobileProvisioning.set(false); 4462 } 4463 }; 4464 CheckMp.Params params = 4465 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 4466 if (DBG) log("checkMobileProvisioning: params=" + params); 4467 // TODO: Reenable when calls to the now defunct 4468 // MobileDataStateTracker.isProvisioningNetwork() are removed. 4469 // This code should be moved to the Telephony code. 4470 // checkMp.execute(params); 4471 } finally { 4472 Binder.restoreCallingIdentity(token); 4473 if (DBG) log("checkMobileProvisioning: X"); 4474 } 4475 return timeOutMs; 4476 } 4477 4478 static class CheckMp extends 4479 AsyncTask<CheckMp.Params, Void, Integer> { 4480 private static final String CHECKMP_TAG = "CheckMp"; 4481 4482 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 4483 private static boolean mTestingFailures; 4484 4485 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 4486 private static final int MAX_LOOPS = 4; 4487 4488 // Number of milli-seconds to complete all of the retires 4489 public static final int MAX_TIMEOUT_MS = 60000; 4490 4491 // The socket should retry only 5 seconds, the default is longer 4492 private static final int SOCKET_TIMEOUT_MS = 5000; 4493 4494 // Sleep time for network errors 4495 private static final int NET_ERROR_SLEEP_SEC = 3; 4496 4497 // Sleep time for network route establishment 4498 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 4499 4500 // Short sleep time for polling :( 4501 private static final int POLLING_SLEEP_SEC = 1; 4502 4503 private Context mContext; 4504 private ConnectivityService mCs; 4505 private TelephonyManager mTm; 4506 private Params mParams; 4507 4508 /** 4509 * Parameters for AsyncTask.execute 4510 */ 4511 static class Params { 4512 private String mUrl; 4513 private long mTimeOutMs; 4514 private CallBack mCb; 4515 4516 Params(String url, long timeOutMs, CallBack cb) { 4517 mUrl = url; 4518 mTimeOutMs = timeOutMs; 4519 mCb = cb; 4520 } 4521 4522 @Override 4523 public String toString() { 4524 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 4525 } 4526 } 4527 4528 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 4529 // issued by name or ip address, for Google its by name so when we construct 4530 // this HostnameVerifier we'll pass the original Uri and use it to verify 4531 // the host. If the host name in the original uril fails we'll test the 4532 // hostname parameter just incase things change. 4533 static class CheckMpHostnameVerifier implements HostnameVerifier { 4534 Uri mOrgUri; 4535 4536 CheckMpHostnameVerifier(Uri orgUri) { 4537 mOrgUri = orgUri; 4538 } 4539 4540 @Override 4541 public boolean verify(String hostname, SSLSession session) { 4542 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 4543 String orgUriHost = mOrgUri.getHost(); 4544 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 4545 if (DBG) { 4546 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 4547 + " orgUriHost=" + orgUriHost); 4548 } 4549 return retVal; 4550 } 4551 } 4552 4553 /** 4554 * The call back object passed in Params. onComplete will be called 4555 * on the main thread. 4556 */ 4557 abstract static class CallBack { 4558 // Called on the main thread. 4559 abstract void onComplete(Integer result); 4560 } 4561 4562 public CheckMp(Context context, ConnectivityService cs) { 4563 if (Build.IS_DEBUGGABLE) { 4564 mTestingFailures = 4565 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 4566 } else { 4567 mTestingFailures = false; 4568 } 4569 4570 mContext = context; 4571 mCs = cs; 4572 4573 // Setup access to TelephonyService we'll be using. 4574 mTm = (TelephonyManager) mContext.getSystemService( 4575 Context.TELEPHONY_SERVICE); 4576 } 4577 4578 /** 4579 * Get the default url to use for the test. 4580 */ 4581 public String getDefaultUrl() { 4582 // See http://go/clientsdns for usage approval 4583 String server = Settings.Global.getString(mContext.getContentResolver(), 4584 Settings.Global.CAPTIVE_PORTAL_SERVER); 4585 if (server == null) { 4586 server = "clients3.google.com"; 4587 } 4588 return "http://" + server + "/generate_204"; 4589 } 4590 4591 /** 4592 * Detect if its possible to connect to the http url. DNS based detection techniques 4593 * do not work at all hotspots. The best way to check is to perform a request to 4594 * a known address that fetches the data we expect. 4595 */ 4596 private synchronized Integer isMobileOk(Params params) { 4597 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 4598 Uri orgUri = Uri.parse(params.mUrl); 4599 Random rand = new Random(); 4600 mParams = params; 4601 4602 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 4603 result = CMP_RESULT_CODE_NO_CONNECTION; 4604 log("isMobileOk: X not mobile capable result=" + result); 4605 return result; 4606 } 4607 4608 if (mCs.mIsStartingProvisioning.get()) { 4609 result = CMP_RESULT_CODE_IS_PROVISIONING; 4610 log("isMobileOk: X is provisioning result=" + result); 4611 return result; 4612 } 4613 4614 // See if we've already determined we've got a provisioning connection, 4615 // if so we don't need to do anything active. 4616 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 4617 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4618 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 4619 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 4620 4621 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 4622 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4623 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 4624 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 4625 4626 if (isDefaultProvisioning || isHipriProvisioning) { 4627 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4628 log("isMobileOk: X default || hipri is provisioning result=" + result); 4629 return result; 4630 } 4631 4632 try { 4633 // Continue trying to connect until time has run out 4634 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 4635 4636 if (!mCs.isMobileDataStateTrackerReady()) { 4637 // Wait for MobileDataStateTracker to be ready. 4638 if (DBG) log("isMobileOk: mdst is not ready"); 4639 while(SystemClock.elapsedRealtime() < endTime) { 4640 if (mCs.isMobileDataStateTrackerReady()) { 4641 // Enable fail fast as we'll do retries here and use a 4642 // hipri connection so the default connection stays active. 4643 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 4644 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 4645 break; 4646 } 4647 sleep(POLLING_SLEEP_SEC); 4648 } 4649 } 4650 4651 log("isMobileOk: start hipri url=" + params.mUrl); 4652 4653 // First wait until we can start using hipri 4654 Binder binder = new Binder(); 4655 while(SystemClock.elapsedRealtime() < endTime) { 4656 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4657 Phone.FEATURE_ENABLE_HIPRI, binder); 4658 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 4659 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 4660 log("isMobileOk: hipri started"); 4661 break; 4662 } 4663 if (VDBG) log("isMobileOk: hipri not started yet"); 4664 result = CMP_RESULT_CODE_NO_CONNECTION; 4665 sleep(POLLING_SLEEP_SEC); 4666 } 4667 4668 // Continue trying to connect until time has run out 4669 while(SystemClock.elapsedRealtime() < endTime) { 4670 try { 4671 // Wait for hipri to connect. 4672 // TODO: Don't poll and handle situation where hipri fails 4673 // because default is retrying. See b/9569540 4674 NetworkInfo.State state = mCs 4675 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4676 if (state != NetworkInfo.State.CONNECTED) { 4677 if (true/*VDBG*/) { 4678 log("isMobileOk: not connected ni=" + 4679 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4680 } 4681 sleep(POLLING_SLEEP_SEC); 4682 result = CMP_RESULT_CODE_NO_CONNECTION; 4683 continue; 4684 } 4685 4686 // Hipri has started check if this is a provisioning url 4687 MobileDataStateTracker mdst = (MobileDataStateTracker) 4688 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4689 if (mdst.isProvisioningNetwork()) { 4690 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4691 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 4692 return result; 4693 } else { 4694 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 4695 } 4696 4697 // Get of the addresses associated with the url host. We need to use the 4698 // address otherwise HttpURLConnection object will use the name to get 4699 // the addresses and will try every address but that will bypass the 4700 // route to host we setup and the connection could succeed as the default 4701 // interface might be connected to the internet via wifi or other interface. 4702 InetAddress[] addresses; 4703 try { 4704 addresses = InetAddress.getAllByName(orgUri.getHost()); 4705 } catch (UnknownHostException e) { 4706 result = CMP_RESULT_CODE_NO_DNS; 4707 log("isMobileOk: X UnknownHostException result=" + result); 4708 return result; 4709 } 4710 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 4711 4712 // Get the type of addresses supported by this link 4713 LinkProperties lp = mCs.getLinkPropertiesForTypeInternal( 4714 ConnectivityManager.TYPE_MOBILE_HIPRI); 4715 boolean linkHasIpv4 = lp.hasIPv4Address(); 4716 boolean linkHasIpv6 = lp.hasGlobalIPv6Address(); 4717 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 4718 + " linkHasIpv6=" + linkHasIpv6); 4719 4720 final ArrayList<InetAddress> validAddresses = 4721 new ArrayList<InetAddress>(addresses.length); 4722 4723 for (InetAddress addr : addresses) { 4724 if (((addr instanceof Inet4Address) && linkHasIpv4) || 4725 ((addr instanceof Inet6Address) && linkHasIpv6)) { 4726 validAddresses.add(addr); 4727 } 4728 } 4729 4730 if (validAddresses.size() == 0) { 4731 return CMP_RESULT_CODE_NO_CONNECTION; 4732 } 4733 4734 int addrTried = 0; 4735 while (true) { 4736 // Loop through at most MAX_LOOPS valid addresses or until 4737 // we run out of time 4738 if (addrTried++ >= MAX_LOOPS) { 4739 log("isMobileOk: too many loops tried - giving up"); 4740 break; 4741 } 4742 if (SystemClock.elapsedRealtime() >= endTime) { 4743 log("isMobileOk: spend too much time - giving up"); 4744 break; 4745 } 4746 4747 InetAddress hostAddr = validAddresses.get(rand.nextInt( 4748 validAddresses.size())); 4749 4750 // Make a route to host so we check the specific interface. 4751 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 4752 hostAddr.getAddress(), null)) { 4753 // Wait a short time to be sure the route is established ?? 4754 log("isMobileOk:" 4755 + " wait to establish route to hostAddr=" + hostAddr); 4756 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 4757 } else { 4758 log("isMobileOk:" 4759 + " could not establish route to hostAddr=" + hostAddr); 4760 // Wait a short time before the next attempt 4761 sleep(NET_ERROR_SLEEP_SEC); 4762 continue; 4763 } 4764 4765 // Rewrite the url to have numeric address to use the specific route 4766 // using http for half the attempts and https for the other half. 4767 // Doing https first and http second as on a redirected walled garden 4768 // such as t-mobile uses we get a SocketTimeoutException: "SSL 4769 // handshake timed out" which we declare as 4770 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 4771 // having http second we will be using logic used for some time. 4772 URL newUrl; 4773 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 4774 newUrl = new URL(scheme, hostAddr.getHostAddress(), 4775 orgUri.getPath()); 4776 log("isMobileOk: newUrl=" + newUrl); 4777 4778 HttpURLConnection urlConn = null; 4779 try { 4780 // Open the connection set the request headers and get the response 4781 urlConn = (HttpURLConnection)newUrl.openConnection( 4782 java.net.Proxy.NO_PROXY); 4783 if (scheme.equals("https")) { 4784 ((HttpsURLConnection)urlConn).setHostnameVerifier( 4785 new CheckMpHostnameVerifier(orgUri)); 4786 } 4787 urlConn.setInstanceFollowRedirects(false); 4788 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 4789 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 4790 urlConn.setUseCaches(false); 4791 urlConn.setAllowUserInteraction(false); 4792 // Set the "Connection" to "Close" as by default "Keep-Alive" 4793 // is used which is useless in this case. 4794 urlConn.setRequestProperty("Connection", "close"); 4795 int responseCode = urlConn.getResponseCode(); 4796 4797 // For debug display the headers 4798 Map<String, List<String>> headers = urlConn.getHeaderFields(); 4799 log("isMobileOk: headers=" + headers); 4800 4801 // Close the connection 4802 urlConn.disconnect(); 4803 urlConn = null; 4804 4805 if (mTestingFailures) { 4806 // Pretend no connection, this tests using http and https 4807 result = CMP_RESULT_CODE_NO_CONNECTION; 4808 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 4809 continue; 4810 } 4811 4812 if (responseCode == 204) { 4813 // Return 4814 result = CMP_RESULT_CODE_CONNECTABLE; 4815 log("isMobileOk: X got expected responseCode=" + responseCode 4816 + " result=" + result); 4817 return result; 4818 } else { 4819 // Retry to be sure this was redirected, we've gotten 4820 // occasions where a server returned 200 even though 4821 // the device didn't have a "warm" sim. 4822 log("isMobileOk: not expected responseCode=" + responseCode); 4823 // TODO - it would be nice in the single-address case to do 4824 // another DNS resolve here, but flushing the cache is a bit 4825 // heavy-handed. 4826 result = CMP_RESULT_CODE_REDIRECTED; 4827 } 4828 } catch (Exception e) { 4829 log("isMobileOk: HttpURLConnection Exception" + e); 4830 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 4831 if (urlConn != null) { 4832 urlConn.disconnect(); 4833 urlConn = null; 4834 } 4835 sleep(NET_ERROR_SLEEP_SEC); 4836 continue; 4837 } 4838 } 4839 log("isMobileOk: X loops|timed out result=" + result); 4840 return result; 4841 } catch (Exception e) { 4842 log("isMobileOk: Exception e=" + e); 4843 continue; 4844 } 4845 } 4846 log("isMobileOk: timed out"); 4847 } finally { 4848 log("isMobileOk: F stop hipri"); 4849 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 4850 mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4851 Phone.FEATURE_ENABLE_HIPRI); 4852 4853 // Wait for hipri to disconnect. 4854 long endTime = SystemClock.elapsedRealtime() + 5000; 4855 4856 while(SystemClock.elapsedRealtime() < endTime) { 4857 NetworkInfo.State state = mCs 4858 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4859 if (state != NetworkInfo.State.DISCONNECTED) { 4860 if (VDBG) { 4861 log("isMobileOk: connected ni=" + 4862 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4863 } 4864 sleep(POLLING_SLEEP_SEC); 4865 continue; 4866 } 4867 } 4868 4869 log("isMobileOk: X result=" + result); 4870 } 4871 return result; 4872 } 4873 4874 @Override 4875 protected Integer doInBackground(Params... params) { 4876 return isMobileOk(params[0]); 4877 } 4878 4879 @Override 4880 protected void onPostExecute(Integer result) { 4881 log("onPostExecute: result=" + result); 4882 if ((mParams != null) && (mParams.mCb != null)) { 4883 mParams.mCb.onComplete(result); 4884 } 4885 } 4886 4887 private String inetAddressesToString(InetAddress[] addresses) { 4888 StringBuffer sb = new StringBuffer(); 4889 boolean firstTime = true; 4890 for(InetAddress addr : addresses) { 4891 if (firstTime) { 4892 firstTime = false; 4893 } else { 4894 sb.append(","); 4895 } 4896 sb.append(addr); 4897 } 4898 return sb.toString(); 4899 } 4900 4901 private void printNetworkInfo() { 4902 boolean hasIccCard = mTm.hasIccCard(); 4903 int simState = mTm.getSimState(); 4904 log("hasIccCard=" + hasIccCard 4905 + " simState=" + simState); 4906 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 4907 if (ni != null) { 4908 log("ni.length=" + ni.length); 4909 for (NetworkInfo netInfo: ni) { 4910 log("netInfo=" + netInfo.toString()); 4911 } 4912 } else { 4913 log("no network info ni=null"); 4914 } 4915 } 4916 4917 /** 4918 * Sleep for a few seconds then return. 4919 * @param seconds 4920 */ 4921 private static void sleep(int seconds) { 4922 long stopTime = System.nanoTime() + (seconds * 1000000000); 4923 long sleepTime; 4924 while ((sleepTime = stopTime - System.nanoTime()) > 0) { 4925 try { 4926 Thread.sleep(sleepTime / 1000000); 4927 } catch (InterruptedException ignored) { 4928 } 4929 } 4930 } 4931 4932 private static void log(String s) { 4933 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 4934 } 4935 } 4936 4937 // TODO: Move to ConnectivityManager and make public? 4938 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 4939 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 4940 4941 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 4942 @Override 4943 public void onReceive(Context context, Intent intent) { 4944 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 4945 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 4946 } 4947 } 4948 }; 4949 4950 private void handleMobileProvisioningAction(String url) { 4951 // Mark notification as not visible 4952 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4953 4954 // Check airplane mode 4955 boolean isAirplaneModeOn = Settings.System.getInt(mContext.getContentResolver(), 4956 Settings.Global.AIRPLANE_MODE_ON, 0) == 1; 4957 // If provisioning network and not in airplane mode handle as a special case, 4958 // otherwise launch browser with the intent directly. 4959 if (mIsProvisioningNetwork.get() && !isAirplaneModeOn) { 4960 if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch"); 4961 mIsProvisioningNetwork.set(false); 4962// mIsStartingProvisioning.set(true); 4963// MobileDataStateTracker mdst = (MobileDataStateTracker) 4964// mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4965 // Radio was disabled on CMP_RESULT_CODE_PROVISIONING_NETWORK, enable it here 4966// mdst.setRadio(true); 4967// mdst.setEnableFailFastMobileData(DctConstants.ENABLED); 4968// mdst.enableMobileProvisioning(url); 4969 } else { 4970 if (DBG) log("handleMobileProvisioningAction: not prov network"); 4971 mIsProvisioningNetwork.set(false); 4972 // Check for apps that can handle provisioning first 4973 Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP); 4974 provisioningIntent.addCategory(TelephonyIntents.CATEGORY_MCCMNC_PREFIX 4975 + mTelephonyManager.getSimOperator()); 4976 if (mContext.getPackageManager().resolveActivity(provisioningIntent, 0 /* flags */) 4977 != null) { 4978 provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4979 Intent.FLAG_ACTIVITY_NEW_TASK); 4980 mContext.startActivity(provisioningIntent); 4981 } else { 4982 // If no apps exist, use standard URL ACTION_VIEW method 4983 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 4984 Intent.CATEGORY_APP_BROWSER); 4985 newIntent.setData(Uri.parse(url)); 4986 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4987 Intent.FLAG_ACTIVITY_NEW_TASK); 4988 try { 4989 mContext.startActivity(newIntent); 4990 } catch (ActivityNotFoundException e) { 4991 loge("handleMobileProvisioningAction: startActivity failed" + e); 4992 } 4993 } 4994 } 4995 } 4996 4997 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 4998 private volatile boolean mIsNotificationVisible = false; 4999 5000 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 5001 String url) { 5002 if (DBG) { 5003 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 5004 + " extraInfo=" + extraInfo + " url=" + url); 5005 } 5006 5007 Resources r = Resources.getSystem(); 5008 NotificationManager notificationManager = (NotificationManager) mContext 5009 .getSystemService(Context.NOTIFICATION_SERVICE); 5010 5011 if (visible) { 5012 CharSequence title; 5013 CharSequence details; 5014 int icon; 5015 Intent intent; 5016 Notification notification = new Notification(); 5017 switch (networkType) { 5018 case ConnectivityManager.TYPE_WIFI: 5019 title = r.getString(R.string.wifi_available_sign_in, 0); 5020 details = r.getString(R.string.network_available_sign_in_detailed, 5021 extraInfo); 5022 icon = R.drawable.stat_notify_wifi_in_range; 5023 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 5024 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 5025 Intent.FLAG_ACTIVITY_NEW_TASK); 5026 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 5027 break; 5028 case ConnectivityManager.TYPE_MOBILE: 5029 case ConnectivityManager.TYPE_MOBILE_HIPRI: 5030 title = r.getString(R.string.network_available_sign_in, 0); 5031 // TODO: Change this to pull from NetworkInfo once a printable 5032 // name has been added to it 5033 details = mTelephonyManager.getNetworkOperatorName(); 5034 icon = R.drawable.stat_notify_rssi_in_range; 5035 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 5036 intent.putExtra("EXTRA_URL", url); 5037 intent.setFlags(0); 5038 notification.contentIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 5039 break; 5040 default: 5041 title = r.getString(R.string.network_available_sign_in, 0); 5042 details = r.getString(R.string.network_available_sign_in_detailed, 5043 extraInfo); 5044 icon = R.drawable.stat_notify_rssi_in_range; 5045 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 5046 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 5047 Intent.FLAG_ACTIVITY_NEW_TASK); 5048 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 5049 break; 5050 } 5051 5052 notification.when = 0; 5053 notification.icon = icon; 5054 notification.flags = Notification.FLAG_AUTO_CANCEL; 5055 notification.tickerText = title; 5056 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 5057 5058 try { 5059 notificationManager.notify(NOTIFICATION_ID, networkType, notification); 5060 } catch (NullPointerException npe) { 5061 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 5062 npe.printStackTrace(); 5063 } 5064 } else { 5065 try { 5066 notificationManager.cancel(NOTIFICATION_ID, networkType); 5067 } catch (NullPointerException npe) { 5068 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 5069 npe.printStackTrace(); 5070 } 5071 } 5072 mIsNotificationVisible = visible; 5073 } 5074 5075 /** Location to an updatable file listing carrier provisioning urls. 5076 * An example: 5077 * 5078 * <?xml version="1.0" encoding="utf-8"?> 5079 * <provisioningUrls> 5080 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 5081 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 5082 * </provisioningUrls> 5083 */ 5084 private static final String PROVISIONING_URL_PATH = 5085 "/data/misc/radio/provisioning_urls.xml"; 5086 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 5087 5088 /** XML tag for root element. */ 5089 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 5090 /** XML tag for individual url */ 5091 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 5092 /** XML tag for redirected url */ 5093 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 5094 /** XML attribute for mcc */ 5095 private static final String ATTR_MCC = "mcc"; 5096 /** XML attribute for mnc */ 5097 private static final String ATTR_MNC = "mnc"; 5098 5099 private static final int REDIRECTED_PROVISIONING = 1; 5100 private static final int PROVISIONING = 2; 5101 5102 private String getProvisioningUrlBaseFromFile(int type) { 5103 FileReader fileReader = null; 5104 XmlPullParser parser = null; 5105 Configuration config = mContext.getResources().getConfiguration(); 5106 String tagType; 5107 5108 switch (type) { 5109 case PROVISIONING: 5110 tagType = TAG_PROVISIONING_URL; 5111 break; 5112 case REDIRECTED_PROVISIONING: 5113 tagType = TAG_REDIRECTED_URL; 5114 break; 5115 default: 5116 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 5117 type); 5118 } 5119 5120 try { 5121 fileReader = new FileReader(mProvisioningUrlFile); 5122 parser = Xml.newPullParser(); 5123 parser.setInput(fileReader); 5124 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 5125 5126 while (true) { 5127 XmlUtils.nextElement(parser); 5128 5129 String element = parser.getName(); 5130 if (element == null) break; 5131 5132 if (element.equals(tagType)) { 5133 String mcc = parser.getAttributeValue(null, ATTR_MCC); 5134 try { 5135 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 5136 String mnc = parser.getAttributeValue(null, ATTR_MNC); 5137 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 5138 parser.next(); 5139 if (parser.getEventType() == XmlPullParser.TEXT) { 5140 return parser.getText(); 5141 } 5142 } 5143 } 5144 } catch (NumberFormatException e) { 5145 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 5146 } 5147 } 5148 } 5149 return null; 5150 } catch (FileNotFoundException e) { 5151 loge("Carrier Provisioning Urls file not found"); 5152 } catch (XmlPullParserException e) { 5153 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 5154 } catch (IOException e) { 5155 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 5156 } finally { 5157 if (fileReader != null) { 5158 try { 5159 fileReader.close(); 5160 } catch (IOException e) {} 5161 } 5162 } 5163 return null; 5164 } 5165 5166 @Override 5167 public String getMobileRedirectedProvisioningUrl() { 5168 enforceConnectivityInternalPermission(); 5169 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 5170 if (TextUtils.isEmpty(url)) { 5171 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 5172 } 5173 return url; 5174 } 5175 5176 @Override 5177 public String getMobileProvisioningUrl() { 5178 enforceConnectivityInternalPermission(); 5179 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 5180 if (TextUtils.isEmpty(url)) { 5181 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 5182 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 5183 } else { 5184 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 5185 } 5186 // populate the iccid, imei and phone number in the provisioning url. 5187 if (!TextUtils.isEmpty(url)) { 5188 String phoneNumber = mTelephonyManager.getLine1Number(); 5189 if (TextUtils.isEmpty(phoneNumber)) { 5190 phoneNumber = "0000000000"; 5191 } 5192 url = String.format(url, 5193 mTelephonyManager.getSimSerialNumber() /* ICCID */, 5194 mTelephonyManager.getDeviceId() /* IMEI */, 5195 phoneNumber /* Phone numer */); 5196 } 5197 5198 return url; 5199 } 5200 5201 @Override 5202 public void setProvisioningNotificationVisible(boolean visible, int networkType, 5203 String extraInfo, String url) { 5204 enforceConnectivityInternalPermission(); 5205 setProvNotificationVisible(visible, networkType, extraInfo, url); 5206 } 5207 5208 @Override 5209 public void setAirplaneMode(boolean enable) { 5210 enforceConnectivityInternalPermission(); 5211 final long ident = Binder.clearCallingIdentity(); 5212 try { 5213 final ContentResolver cr = mContext.getContentResolver(); 5214 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 5215 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 5216 intent.putExtra("state", enable); 5217 mContext.sendBroadcast(intent); 5218 } finally { 5219 Binder.restoreCallingIdentity(ident); 5220 } 5221 } 5222 5223 private void onUserStart(int userId) { 5224 synchronized(mVpns) { 5225 Vpn userVpn = mVpns.get(userId); 5226 if (userVpn != null) { 5227 loge("Starting user already has a VPN"); 5228 return; 5229 } 5230 userVpn = new Vpn(mContext, mVpnCallback, mNetd, this, userId); 5231 mVpns.put(userId, userVpn); 5232 userVpn.startMonitoring(mContext, mTrackerHandler); 5233 } 5234 } 5235 5236 private void onUserStop(int userId) { 5237 synchronized(mVpns) { 5238 Vpn userVpn = mVpns.get(userId); 5239 if (userVpn == null) { 5240 loge("Stopping user has no VPN"); 5241 return; 5242 } 5243 mVpns.delete(userId); 5244 } 5245 } 5246 5247 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 5248 @Override 5249 public void onReceive(Context context, Intent intent) { 5250 final String action = intent.getAction(); 5251 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 5252 if (userId == UserHandle.USER_NULL) return; 5253 5254 if (Intent.ACTION_USER_STARTING.equals(action)) { 5255 onUserStart(userId); 5256 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 5257 onUserStop(userId); 5258 } 5259 } 5260 }; 5261 5262 @Override 5263 public LinkQualityInfo getLinkQualityInfo(int networkType) { 5264 enforceAccessPermission(); 5265 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 5266 return mNetTrackers[networkType].getLinkQualityInfo(); 5267 } else { 5268 return null; 5269 } 5270 } 5271 5272 @Override 5273 public LinkQualityInfo getActiveLinkQualityInfo() { 5274 enforceAccessPermission(); 5275 if (isNetworkTypeValid(mActiveDefaultNetwork) && 5276 mNetTrackers[mActiveDefaultNetwork] != null) { 5277 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 5278 } else { 5279 return null; 5280 } 5281 } 5282 5283 @Override 5284 public LinkQualityInfo[] getAllLinkQualityInfo() { 5285 enforceAccessPermission(); 5286 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 5287 for (NetworkStateTracker tracker : mNetTrackers) { 5288 if (tracker != null) { 5289 LinkQualityInfo li = tracker.getLinkQualityInfo(); 5290 if (li != null) { 5291 result.add(li); 5292 } 5293 } 5294 } 5295 5296 return result.toArray(new LinkQualityInfo[result.size()]); 5297 } 5298 5299 /* Infrastructure for network sampling */ 5300 5301 private void handleNetworkSamplingTimeout() { 5302 5303 log("Sampling interval elapsed, updating statistics .."); 5304 5305 // initialize list of interfaces .. 5306 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 5307 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 5308 for (NetworkStateTracker tracker : mNetTrackers) { 5309 if (tracker != null) { 5310 String ifaceName = tracker.getNetworkInterfaceName(); 5311 if (ifaceName != null) { 5312 mapIfaceToSample.put(ifaceName, null); 5313 } 5314 } 5315 } 5316 5317 // Read samples for all interfaces 5318 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 5319 5320 // process samples for all networks 5321 for (NetworkStateTracker tracker : mNetTrackers) { 5322 if (tracker != null) { 5323 String ifaceName = tracker.getNetworkInterfaceName(); 5324 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 5325 if (ss != null) { 5326 // end the previous sampling cycle 5327 tracker.stopSampling(ss); 5328 // start a new sampling cycle .. 5329 tracker.startSampling(ss); 5330 } 5331 } 5332 } 5333 5334 log("Done."); 5335 5336 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 5337 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 5338 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 5339 5340 if (DBG) log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 5341 5342 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 5343 } 5344 5345 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 5346 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 5347 mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, wakeupTime, intent); 5348 } 5349 5350 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 5351 new HashMap<Messenger, NetworkFactoryInfo>(); 5352 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 5353 new HashMap<NetworkRequest, NetworkRequestInfo>(); 5354 5355 private static class NetworkFactoryInfo { 5356 public final String name; 5357 public final Messenger messenger; 5358 public final AsyncChannel asyncChannel; 5359 5360 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 5361 this.name = name; 5362 this.messenger = messenger; 5363 this.asyncChannel = asyncChannel; 5364 } 5365 } 5366 5367 private class NetworkRequestInfo implements IBinder.DeathRecipient { 5368 static final boolean REQUEST = true; 5369 static final boolean LISTEN = false; 5370 5371 final NetworkRequest request; 5372 IBinder mBinder; 5373 final int mPid; 5374 final int mUid; 5375 final Messenger messenger; 5376 final boolean isRequest; 5377 5378 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 5379 super(); 5380 messenger = m; 5381 request = r; 5382 mBinder = binder; 5383 mPid = getCallingPid(); 5384 mUid = getCallingUid(); 5385 this.isRequest = isRequest; 5386 5387 try { 5388 mBinder.linkToDeath(this, 0); 5389 } catch (RemoteException e) { 5390 binderDied(); 5391 } 5392 } 5393 5394 void unlinkDeathRecipient() { 5395 mBinder.unlinkToDeath(this, 0); 5396 } 5397 5398 public void binderDied() { 5399 log("ConnectivityService NetworkRequestInfo binderDied(" + 5400 request + ", " + mBinder + ")"); 5401 releaseNetworkRequest(request); 5402 } 5403 5404 public String toString() { 5405 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 5406 mPid + " for " + request; 5407 } 5408 } 5409 5410 @Override 5411 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 5412 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 5413 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 5414 == false) { 5415 enforceConnectivityInternalPermission(); 5416 } else { 5417 enforceChangePermission(); 5418 } 5419 5420 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 5421 throw new IllegalArgumentException("Bad timeout specified"); 5422 } 5423 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 5424 networkCapabilities), legacyType, nextNetworkRequestId()); 5425 if (DBG) log("requestNetwork for " + networkRequest); 5426 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 5427 NetworkRequestInfo.REQUEST); 5428 5429 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 5430 if (timeoutMs > 0) { 5431 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 5432 nri), timeoutMs); 5433 } 5434 return networkRequest; 5435 } 5436 5437 @Override 5438 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 5439 PendingIntent operation) { 5440 // TODO 5441 return null; 5442 } 5443 5444 @Override 5445 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 5446 Messenger messenger, IBinder binder) { 5447 enforceAccessPermission(); 5448 5449 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 5450 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 5451 if (DBG) log("listenForNetwork for " + networkRequest); 5452 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 5453 NetworkRequestInfo.LISTEN); 5454 5455 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 5456 return networkRequest; 5457 } 5458 5459 @Override 5460 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 5461 PendingIntent operation) { 5462 } 5463 5464 @Override 5465 public void releaseNetworkRequest(NetworkRequest networkRequest) { 5466 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, 5467 networkRequest)); 5468 } 5469 5470 @Override 5471 public void registerNetworkFactory(Messenger messenger, String name) { 5472 enforceConnectivityInternalPermission(); 5473 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 5474 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 5475 } 5476 5477 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 5478 if (VDBG) log("Got NetworkFactory Messenger for " + nfi.name); 5479 mNetworkFactoryInfos.put(nfi.messenger, nfi); 5480 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 5481 } 5482 5483 @Override 5484 public void unregisterNetworkFactory(Messenger messenger) { 5485 enforceConnectivityInternalPermission(); 5486 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 5487 } 5488 5489 private void handleUnregisterNetworkFactory(Messenger messenger) { 5490 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 5491 if (nfi == null) { 5492 if (VDBG) log("Failed to find Messenger in unregisterNetworkFactory"); 5493 return; 5494 } 5495 if (VDBG) log("unregisterNetworkFactory for " + nfi.name); 5496 } 5497 5498 /** 5499 * NetworkAgentInfo supporting a request by requestId. 5500 * These have already been vetted (their Capabilities satisfy the request) 5501 * and the are the highest scored network available. 5502 * the are keyed off the Requests requestId. 5503 */ 5504 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 5505 new SparseArray<NetworkAgentInfo>(); 5506 5507 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 5508 new SparseArray<NetworkAgentInfo>(); 5509 5510 // NetworkAgentInfo keyed off its connecting messenger 5511 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 5512 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 5513 new HashMap<Messenger, NetworkAgentInfo>(); 5514 5515 private final NetworkRequest mDefaultRequest; 5516 5517 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 5518 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 5519 int currentScore) { 5520 enforceConnectivityInternalPermission(); 5521 5522 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), nextNetId(), 5523 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 5524 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler); 5525 if (VDBG) log("registerNetworkAgent " + nai); 5526 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 5527 } 5528 5529 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 5530 if (VDBG) log("Got NetworkAgent Messenger"); 5531 mNetworkAgentInfos.put(na.messenger, na); 5532 mNetworkForNetId.put(na.network.netId, na); 5533 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 5534 NetworkInfo networkInfo = na.networkInfo; 5535 na.networkInfo = null; 5536 updateNetworkInfo(na, networkInfo); 5537 } 5538 5539 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 5540 LinkProperties newLp = networkAgent.linkProperties; 5541 int netId = networkAgent.network.netId; 5542 5543 updateInterfaces(newLp, oldLp, netId); 5544 updateMtu(newLp, oldLp); 5545 // TODO - figure out what to do for clat 5546// for (LinkProperties lp : newLp.getStackedLinks()) { 5547// updateMtu(lp, null); 5548// } 5549 updateRoutes(newLp, oldLp, netId); 5550 updateDnses(newLp, oldLp, netId); 5551 updateClat(newLp, oldLp, networkAgent); 5552 } 5553 5554 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo na) { 5555 // Update 464xlat state. 5556 if (mClat.requiresClat(na)) { 5557 5558 // If the connection was previously using clat, but is not using it now, stop the clat 5559 // daemon. Normally, this happens automatically when the connection disconnects, but if 5560 // the disconnect is not reported, or if the connection's LinkProperties changed for 5561 // some other reason (e.g., handoff changes the IP addresses on the link), it would 5562 // still be running. If it's not running, then stopping it is a no-op. 5563 if (Nat464Xlat.isRunningClat(oldLp) && !Nat464Xlat.isRunningClat(newLp)) { 5564 mClat.stopClat(); 5565 } 5566 // If the link requires clat to be running, then start the daemon now. 5567 if (na.networkInfo.isConnected()) { 5568 mClat.startClat(na); 5569 } else { 5570 mClat.stopClat(); 5571 } 5572 } 5573 } 5574 5575 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 5576 CompareResult<String> interfaceDiff = new CompareResult<String>(); 5577 if (oldLp != null) { 5578 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 5579 } else if (newLp != null) { 5580 interfaceDiff.added = newLp.getAllInterfaceNames(); 5581 } 5582 for (String iface : interfaceDiff.added) { 5583 try { 5584 mNetd.addInterfaceToNetwork(iface, netId); 5585 } catch (Exception e) { 5586 loge("Exception adding interface: " + e); 5587 } 5588 } 5589 for (String iface : interfaceDiff.removed) { 5590 try { 5591 mNetd.removeInterfaceFromNetwork(iface, netId); 5592 } catch (Exception e) { 5593 loge("Exception removing interface: " + e); 5594 } 5595 } 5596 } 5597 5598 private void updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 5599 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 5600 if (oldLp != null) { 5601 routeDiff = oldLp.compareAllRoutes(newLp); 5602 } else if (newLp != null) { 5603 routeDiff.added = newLp.getAllRoutes(); 5604 } 5605 5606 // add routes before removing old in case it helps with continuous connectivity 5607 5608 // do this twice, adding non-nexthop routes first, then routes they are dependent on 5609 for (RouteInfo route : routeDiff.added) { 5610 if (route.hasGateway()) continue; 5611 try { 5612 mNetd.addRoute(netId, route); 5613 } catch (Exception e) { 5614 loge("Exception in addRoute for non-gateway: " + e); 5615 } 5616 } 5617 for (RouteInfo route : routeDiff.added) { 5618 if (route.hasGateway() == false) continue; 5619 try { 5620 mNetd.addRoute(netId, route); 5621 } catch (Exception e) { 5622 loge("Exception in addRoute for gateway: " + e); 5623 } 5624 } 5625 5626 for (RouteInfo route : routeDiff.removed) { 5627 try { 5628 mNetd.removeRoute(netId, route); 5629 } catch (Exception e) { 5630 loge("Exception in removeRoute: " + e); 5631 } 5632 } 5633 } 5634 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId) { 5635 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 5636 Collection<InetAddress> dnses = newLp.getDnsServers(); 5637 if (dnses.size() == 0 && mDefaultDns != null) { 5638 dnses = new ArrayList(); 5639 dnses.add(mDefaultDns); 5640 if (DBG) { 5641 loge("no dns provided for netId " + netId + ", so using defaults"); 5642 } 5643 } 5644 try { 5645 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 5646 newLp.getDomains()); 5647 } catch (Exception e) { 5648 loge("Exception in setDnsServersForNetwork: " + e); 5649 } 5650 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 5651 if (defaultNai != null && defaultNai.network.netId == netId) { 5652 setDefaultDnsSystemProperties(dnses); 5653 } 5654 } 5655 } 5656 5657 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 5658 int last = 0; 5659 for (InetAddress dns : dnses) { 5660 ++last; 5661 String key = "net.dns" + last; 5662 String value = dns.getHostAddress(); 5663 SystemProperties.set(key, value); 5664 } 5665 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 5666 String key = "net.dns" + i; 5667 SystemProperties.set(key, ""); 5668 } 5669 mNumDnsEntries = last; 5670 } 5671 5672 5673 private void updateCapabilities(NetworkAgentInfo networkAgent, 5674 NetworkCapabilities networkCapabilities) { 5675 // TODO - what else here? Verify still satisfies everybody? 5676 // Check if satisfies somebody new? call callbacks? 5677 networkAgent.networkCapabilities = networkCapabilities; 5678 } 5679 5680 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 5681 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 5682 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 5683 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 5684 networkRequest); 5685 } 5686 } 5687 5688 private void callCallbackForRequest(NetworkRequestInfo nri, 5689 NetworkAgentInfo networkAgent, int notificationType) { 5690 if (nri.messenger == null) return; // Default request has no msgr 5691 Object o; 5692 int a1 = 0; 5693 int a2 = 0; 5694 switch (notificationType) { 5695 case ConnectivityManager.CALLBACK_LOSING: 5696 a1 = 30 * 1000; // TODO - read this from NetworkMonitor 5697 // fall through 5698 case ConnectivityManager.CALLBACK_PRECHECK: 5699 case ConnectivityManager.CALLBACK_AVAILABLE: 5700 case ConnectivityManager.CALLBACK_LOST: 5701 case ConnectivityManager.CALLBACK_CAP_CHANGED: 5702 case ConnectivityManager.CALLBACK_IP_CHANGED: { 5703 o = new NetworkRequest(nri.request); 5704 a2 = networkAgent.network.netId; 5705 break; 5706 } 5707 case ConnectivityManager.CALLBACK_UNAVAIL: 5708 case ConnectivityManager.CALLBACK_RELEASED: { 5709 o = new NetworkRequest(nri.request); 5710 break; 5711 } 5712 default: { 5713 loge("Unknown notificationType " + notificationType); 5714 return; 5715 } 5716 } 5717 Message msg = Message.obtain(); 5718 msg.arg1 = a1; 5719 msg.arg2 = a2; 5720 msg.obj = o; 5721 msg.what = notificationType; 5722 try { 5723 if (VDBG) log("sending notification " + notificationType + " for " + nri.request); 5724 nri.messenger.send(msg); 5725 } catch (RemoteException e) { 5726 // may occur naturally in the race of binder death. 5727 loge("RemoteException caught trying to send a callback msg for " + nri.request); 5728 } 5729 } 5730 5731 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 5732 if (oldNetwork == null) { 5733 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 5734 return; 5735 } 5736 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 5737 if (DBG) { 5738 if (oldNetwork.networkRequests.size() != 0) { 5739 loge("Dead network still had " + oldNetwork.networkRequests.size() + " requests"); 5740 } 5741 } 5742 oldNetwork.asyncChannel.disconnect(); 5743 } 5744 5745 private void handleConnectionValidated(NetworkAgentInfo newNetwork) { 5746 if (newNetwork == null) { 5747 loge("Unknown NetworkAgentInfo in handleConnectionValidated"); 5748 return; 5749 } 5750 boolean keep = false; 5751 boolean isNewDefault = false; 5752 if (DBG) log("handleConnectionValidated for "+newNetwork.name()); 5753 // check if any NetworkRequest wants this NetworkAgent 5754 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 5755 if (VDBG) log(" new Network has: " + newNetwork.networkCapabilities); 5756 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 5757 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 5758 if (newNetwork == currentNetwork) { 5759 if (VDBG) log("Network " + newNetwork.name() + " was already satisfying" + 5760 " request " + nri.request.requestId + ". No change."); 5761 keep = true; 5762 continue; 5763 } 5764 5765 // check if it satisfies the NetworkCapabilities 5766 if (VDBG) log(" checking if request is satisfied: " + nri.request); 5767 if (nri.request.networkCapabilities.satisfiedByNetworkCapabilities( 5768 newNetwork.networkCapabilities)) { 5769 // next check if it's better than any current network we're using for 5770 // this request 5771 if (VDBG) { 5772 log("currentScore = " + 5773 (currentNetwork != null ? currentNetwork.currentScore : 0) + 5774 ", newScore = " + newNetwork.currentScore); 5775 } 5776 if (currentNetwork == null || 5777 currentNetwork.currentScore < newNetwork.currentScore) { 5778 if (currentNetwork != null) { 5779 if (VDBG) log(" accepting network in place of " + currentNetwork.name()); 5780 currentNetwork.networkRequests.remove(nri.request.requestId); 5781 currentNetwork.networkLingered.add(nri.request); 5782 affectedNetworks.add(currentNetwork); 5783 } else { 5784 if (VDBG) log(" accepting network in place of null"); 5785 } 5786 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 5787 newNetwork.addRequest(nri.request); 5788 int legacyType = nri.request.legacyType; 5789 if (legacyType != TYPE_NONE) { 5790 mLegacyTypeTracker.add(legacyType, newNetwork); 5791 } 5792 keep = true; 5793 // TODO - this could get expensive if we have alot of requests for this 5794 // network. Think about if there is a way to reduce this. Push 5795 // netid->request mapping to each factory? 5796 sendUpdatedScoreToFactories(nri.request, newNetwork.currentScore); 5797 if (mDefaultRequest.requestId == nri.request.requestId) { 5798 isNewDefault = true; 5799 updateActiveDefaultNetwork(newNetwork); 5800 if (newNetwork.linkProperties != null) { 5801 setDefaultDnsSystemProperties( 5802 newNetwork.linkProperties.getDnsServers()); 5803 } else { 5804 setDefaultDnsSystemProperties(new ArrayList<InetAddress>()); 5805 } 5806 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 5807 } 5808 } 5809 } 5810 } 5811 for (NetworkAgentInfo nai : affectedNetworks) { 5812 boolean teardown = true; 5813 for (int i = 0; i < nai.networkRequests.size(); i++) { 5814 NetworkRequest nr = nai.networkRequests.valueAt(i); 5815 try { 5816 if (mNetworkRequests.get(nr).isRequest) { 5817 teardown = false; 5818 } 5819 } catch (Exception e) { 5820 loge("Request " + nr + " not found in mNetworkRequests."); 5821 loge(" it came from request list of " + nai.name()); 5822 } 5823 } 5824 if (teardown) { 5825 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 5826 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 5827 } else { 5828 // not going to linger, so kill the list of linger networks.. only 5829 // notify them of linger if it happens as the result of gaining another, 5830 // but if they transition and old network stays up, don't tell them of linger 5831 // or very delayed loss 5832 nai.networkLingered.clear(); 5833 if (VDBG) log("Lingered for " + nai.name() + " cleared"); 5834 } 5835 } 5836 if (keep) { 5837 if (isNewDefault) { 5838 if (VDBG) log("Switching to new default network: " + newNetwork); 5839 setupDataActivityTracking(newNetwork); 5840 try { 5841 mNetd.setDefaultNetId(newNetwork.network.netId); 5842 } catch (Exception e) { 5843 loge("Exception setting default network :" + e); 5844 } 5845 if (newNetwork.equals(mNetworkForRequestId.get(mDefaultRequest.requestId))) { 5846 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 5847 } 5848 synchronized (ConnectivityService.this) { 5849 // have a new default network, release the transition wakelock in 5850 // a second if it's held. The second pause is to allow apps 5851 // to reconnect over the new network 5852 if (mNetTransitionWakeLock.isHeld()) { 5853 mHandler.sendMessageDelayed(mHandler.obtainMessage( 5854 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 5855 mNetTransitionWakeLockSerialNumber, 0), 5856 1000); 5857 } 5858 } 5859 5860 // this will cause us to come up initially as unconnected and switching 5861 // to connected after our normal pause unless somebody reports us as 5862 // really disconnected 5863 mDefaultInetConditionPublished = 0; 5864 mDefaultConnectionSequence++; 5865 mInetConditionChangeInFlight = false; 5866 // TODO - read the tcp buffer size config string from somewhere 5867 // updateNetworkSettings(); 5868 } 5869 // notify battery stats service about this network 5870 try { 5871 BatteryStatsService.getService().noteNetworkInterfaceType( 5872 newNetwork.linkProperties.getInterfaceName(), 5873 newNetwork.networkInfo.getType()); 5874 } catch (RemoteException e) { } 5875 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 5876 } else { 5877 if (DBG && newNetwork.networkRequests.size() != 0) { 5878 loge("tearing down network with live requests:"); 5879 for (int i=0; i < newNetwork.networkRequests.size(); i++) { 5880 loge(" " + newNetwork.networkRequests.valueAt(i)); 5881 } 5882 } 5883 if (VDBG) log("Validated network turns out to be unwanted. Tear it down."); 5884 newNetwork.asyncChannel.disconnect(); 5885 } 5886 } 5887 5888 5889 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 5890 NetworkInfo.State state = newInfo.getState(); 5891 NetworkInfo oldInfo = networkAgent.networkInfo; 5892 networkAgent.networkInfo = newInfo; 5893 5894 if (oldInfo != null && oldInfo.getState() == state) { 5895 if (VDBG) log("ignoring duplicate network state non-change"); 5896 return; 5897 } 5898 if (DBG) { 5899 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 5900 (oldInfo == null ? "null" : oldInfo.getState()) + 5901 " to " + state); 5902 } 5903 5904 if (state == NetworkInfo.State.CONNECTED) { 5905 try { 5906 // This is likely caused by the fact that this network already 5907 // exists. An example is when a network goes from CONNECTED to 5908 // CONNECTING and back (like wifi on DHCP renew). 5909 // TODO: keep track of which networks we've created, or ask netd 5910 // to tell us whether we've already created this network or not. 5911 mNetd.createNetwork(networkAgent.network.netId); 5912 } catch (Exception e) { 5913 loge("Error creating network " + networkAgent.network.netId + ": " 5914 + e.getMessage()); 5915 return; 5916 } 5917 5918 updateLinkProperties(networkAgent, null); 5919 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 5920 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 5921 } else if (state == NetworkInfo.State.DISCONNECTED || 5922 state == NetworkInfo.State.SUSPENDED) { 5923 networkAgent.asyncChannel.disconnect(); 5924 } 5925 } 5926 5927 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 5928 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 5929 5930 nai.currentScore = score; 5931 5932 // TODO - This will not do the right thing if this network is lowering 5933 // its score and has requests that can be served by other 5934 // currently-active networks, or if the network is increasing its 5935 // score and other networks have requests that can be better served 5936 // by this network. 5937 // 5938 // Really we want to see if any of our requests migrate to other 5939 // active/lingered networks and if any other requests migrate to us (depending 5940 // on increasing/decreasing currentScore. That's a bit of work and probably our 5941 // score checking/network allocation code needs to be modularized so we can understand 5942 // (see handleConnectionValided for an example). 5943 // 5944 // As a first order approx, lets just advertise the new score to factories. If 5945 // somebody can beat it they will nominate a network and our normal net replacement 5946 // code will fire. 5947 for (int i = 0; i < nai.networkRequests.size(); i++) { 5948 NetworkRequest nr = nai.networkRequests.valueAt(i); 5949 sendUpdatedScoreToFactories(nr, score); 5950 } 5951 } 5952 5953 // notify only this one new request of the current state 5954 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 5955 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 5956 // TODO - read state from monitor to decide what to send. 5957// if (nai.networkMonitor.isLingering()) { 5958// notifyType = NetworkCallbacks.LOSING; 5959// } else if (nai.networkMonitor.isEvaluating()) { 5960// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 5961// } 5962 callCallbackForRequest(nri, nai, notifyType); 5963 } 5964 5965 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 5966 if (connected) { 5967 NetworkInfo info = new NetworkInfo(nai.networkInfo); 5968 info.setType(type); 5969 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 5970 } else { 5971 NetworkInfo info = new NetworkInfo(nai.networkInfo); 5972 info.setType(type); 5973 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 5974 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 5975 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 5976 if (info.isFailover()) { 5977 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 5978 nai.networkInfo.setFailover(false); 5979 } 5980 if (info.getReason() != null) { 5981 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 5982 } 5983 if (info.getExtraInfo() != null) { 5984 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 5985 } 5986 NetworkAgentInfo newDefaultAgent = null; 5987 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 5988 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 5989 if (newDefaultAgent != null) { 5990 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 5991 newDefaultAgent.networkInfo); 5992 } else { 5993 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 5994 } 5995 } 5996 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 5997 mDefaultInetConditionPublished); 5998 final Intent immediateIntent = new Intent(intent); 5999 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 6000 sendStickyBroadcast(immediateIntent); 6001 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 6002 if (newDefaultAgent != null) { 6003 sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo, 6004 getConnectivityChangeDelay()); 6005 } 6006 } 6007 } 6008 6009 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 6010 if (VDBG) log("notifyType " + notifyType + " for " + networkAgent.name()); 6011 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 6012 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 6013 NetworkRequestInfo nri = mNetworkRequests.get(nr); 6014 if (VDBG) log(" sending notification for " + nr); 6015 callCallbackForRequest(nri, networkAgent, notifyType); 6016 } 6017 } 6018 6019 private LinkProperties getLinkPropertiesForTypeInternal(int networkType) { 6020 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 6021 return (nai != null) ? 6022 new LinkProperties(nai.linkProperties) : 6023 new LinkProperties(); 6024 } 6025 6026 private NetworkInfo getNetworkInfoForType(int networkType) { 6027 if (!mLegacyTypeTracker.isTypeSupported(networkType)) 6028 return null; 6029 6030 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 6031 if (nai != null) { 6032 NetworkInfo result = new NetworkInfo(nai.networkInfo); 6033 result.setType(networkType); 6034 return result; 6035 } else { 6036 return new NetworkInfo(networkType, 0, "Unknown", ""); 6037 } 6038 } 6039 6040 private NetworkCapabilities getNetworkCapabilitiesForType(int networkType) { 6041 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 6042 return (nai != null) ? 6043 new NetworkCapabilities(nai.networkCapabilities) : 6044 new NetworkCapabilities(); 6045 } 6046} 6047