ConnectivityService.java revision 7dc78cf3af9fd11a4f1e2e981ce584a23755ea9e
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.NetworkCallbackListener; 24import static android.net.ConnectivityManager.TYPE_BLUETOOTH; 25import static android.net.ConnectivityManager.TYPE_DUMMY; 26import static android.net.ConnectivityManager.TYPE_MOBILE; 27import static android.net.ConnectivityManager.TYPE_MOBILE_MMS; 28import static android.net.ConnectivityManager.TYPE_MOBILE_SUPL; 29import static android.net.ConnectivityManager.TYPE_MOBILE_DUN; 30import static android.net.ConnectivityManager.TYPE_MOBILE_FOTA; 31import static android.net.ConnectivityManager.TYPE_MOBILE_IMS; 32import static android.net.ConnectivityManager.TYPE_MOBILE_CBS; 33import static android.net.ConnectivityManager.TYPE_MOBILE_IA; 34import static android.net.ConnectivityManager.TYPE_MOBILE_HIPRI; 35import static android.net.ConnectivityManager.TYPE_NONE; 36import static android.net.ConnectivityManager.TYPE_WIFI; 37import static android.net.ConnectivityManager.TYPE_WIMAX; 38import static android.net.ConnectivityManager.TYPE_PROXY; 39import static android.net.ConnectivityManager.getNetworkTypeName; 40import static android.net.ConnectivityManager.isNetworkTypeValid; 41import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 42import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 43 44import android.app.AlarmManager; 45import android.app.AppOpsManager; 46import android.app.Notification; 47import android.app.NotificationManager; 48import android.app.PendingIntent; 49import android.bluetooth.BluetoothTetheringDataTracker; 50import android.content.ActivityNotFoundException; 51import android.content.BroadcastReceiver; 52import android.content.ContentResolver; 53import android.content.Context; 54import android.content.ContextWrapper; 55import android.content.Intent; 56import android.content.IntentFilter; 57import android.content.pm.ApplicationInfo; 58import android.content.pm.PackageManager; 59import android.content.pm.PackageManager.NameNotFoundException; 60import android.content.res.Configuration; 61import android.content.res.Resources; 62import android.database.ContentObserver; 63import android.net.CaptivePortalTracker; 64import android.net.ConnectivityManager; 65import android.net.DummyDataStateTracker; 66import android.net.IConnectivityManager; 67import android.net.INetworkManagementEventObserver; 68import android.net.INetworkPolicyListener; 69import android.net.INetworkPolicyManager; 70import android.net.INetworkStatsService; 71import android.net.LinkAddress; 72import android.net.LinkProperties; 73import android.net.LinkProperties.CompareResult; 74import android.net.LinkQualityInfo; 75import android.net.MobileDataStateTracker; 76import android.net.Network; 77import android.net.NetworkAgent; 78import android.net.NetworkCapabilities; 79import android.net.NetworkConfig; 80import android.net.NetworkInfo; 81import android.net.NetworkInfo.DetailedState; 82import android.net.NetworkFactory; 83import android.net.NetworkQuotaInfo; 84import android.net.NetworkRequest; 85import android.net.NetworkState; 86import android.net.NetworkStateTracker; 87import android.net.NetworkUtils; 88import android.net.Proxy; 89import android.net.ProxyDataTracker; 90import android.net.ProxyInfo; 91import android.net.RouteInfo; 92import android.net.SamplingDataTracker; 93import android.net.Uri; 94import android.net.wimax.WimaxManagerConstants; 95import android.os.AsyncTask; 96import android.os.Binder; 97import android.os.Build; 98import android.os.FileUtils; 99import android.os.Handler; 100import android.os.HandlerThread; 101import android.os.IBinder; 102import android.os.INetworkManagementService; 103import android.os.Looper; 104import android.os.Message; 105import android.os.Messenger; 106import android.os.ParcelFileDescriptor; 107import android.os.PowerManager; 108import android.os.Process; 109import android.os.RemoteException; 110import android.os.ServiceManager; 111import android.os.SystemClock; 112import android.os.SystemProperties; 113import android.os.UserHandle; 114import android.provider.Settings; 115import android.security.Credentials; 116import android.security.KeyStore; 117import android.telephony.TelephonyManager; 118import android.text.TextUtils; 119import android.util.Slog; 120import android.util.SparseArray; 121import android.util.SparseIntArray; 122import android.util.Xml; 123 124import com.android.internal.R; 125import com.android.internal.annotations.GuardedBy; 126import com.android.internal.net.LegacyVpnInfo; 127import com.android.internal.net.VpnConfig; 128import com.android.internal.net.VpnProfile; 129import com.android.internal.telephony.DctConstants; 130import com.android.internal.telephony.Phone; 131import com.android.internal.telephony.PhoneConstants; 132import com.android.internal.telephony.TelephonyIntents; 133import com.android.internal.util.AsyncChannel; 134import com.android.internal.util.IndentingPrintWriter; 135import com.android.internal.util.XmlUtils; 136import com.android.server.am.BatteryStatsService; 137import com.android.server.connectivity.DataConnectionStats; 138import com.android.server.connectivity.Nat464Xlat; 139import com.android.server.connectivity.NetworkAgentInfo; 140import com.android.server.connectivity.NetworkMonitor; 141import com.android.server.connectivity.PacManager; 142import com.android.server.connectivity.Tethering; 143import com.android.server.connectivity.Vpn; 144import com.android.server.net.BaseNetworkObserver; 145import com.android.server.net.LockdownVpnTracker; 146import com.google.android.collect.Lists; 147import com.google.android.collect.Sets; 148 149import dalvik.system.DexClassLoader; 150 151import org.xmlpull.v1.XmlPullParser; 152import org.xmlpull.v1.XmlPullParserException; 153 154import java.io.File; 155import java.io.FileDescriptor; 156import java.io.FileNotFoundException; 157import java.io.FileReader; 158import java.io.IOException; 159import java.io.PrintWriter; 160import java.lang.reflect.Constructor; 161import java.net.HttpURLConnection; 162import java.net.Inet4Address; 163import java.net.Inet6Address; 164import java.net.InetAddress; 165import java.net.URL; 166import java.net.UnknownHostException; 167import java.util.ArrayList; 168import java.util.Arrays; 169import java.util.Collection; 170import java.util.GregorianCalendar; 171import java.util.HashMap; 172import java.util.HashSet; 173import java.util.List; 174import java.util.Map; 175import java.util.Random; 176import java.util.concurrent.atomic.AtomicBoolean; 177import java.util.concurrent.atomic.AtomicInteger; 178 179import javax.net.ssl.HostnameVerifier; 180import javax.net.ssl.HttpsURLConnection; 181import javax.net.ssl.SSLSession; 182 183import static android.net.ConnectivityManager.INVALID_NET_ID; 184 185/** 186 * @hide 187 */ 188public class ConnectivityService extends IConnectivityManager.Stub { 189 private static final String TAG = "ConnectivityService"; 190 191 private static final boolean DBG = true; 192 private static final boolean VDBG = true; // STOPSHIP 193 194 // network sampling debugging 195 private static final boolean SAMPLE_DBG = false; 196 197 private static final boolean LOGD_RULES = false; 198 199 // TODO: create better separation between radio types and network types 200 201 // how long to wait before switching back to a radio's default network 202 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 203 // system property that can override the above value 204 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 205 "android.telephony.apn-restore"; 206 207 // Default value if FAIL_FAST_TIME_MS is not set 208 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 209 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 210 private static final String FAIL_FAST_TIME_MS = 211 "persist.radio.fail_fast_time_ms"; 212 213 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 214 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 215 216 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 217 218 private PendingIntent mSampleIntervalElapsedIntent; 219 220 // Set network sampling interval at 12 minutes, this way, even if the timers get 221 // aggregated, it will fire at around 15 minutes, which should allow us to 222 // aggregate this timer with other timers (specially the socket keep alive timers) 223 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 12 * 60); 224 225 // start network sampling a minute after booting ... 226 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 60); 227 228 AlarmManager mAlarmManager; 229 230 // used in recursive route setting to add gateways for the host for which 231 // a host route was requested. 232 private static final int MAX_HOSTROUTE_CYCLE_COUNT = 10; 233 234 private Tethering mTethering; 235 236 private KeyStore mKeyStore; 237 238 @GuardedBy("mVpns") 239 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 240 private VpnCallback mVpnCallback = new VpnCallback(); 241 242 private boolean mLockdownEnabled; 243 private LockdownVpnTracker mLockdownTracker; 244 245 private Nat464Xlat mClat; 246 247 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 248 private Object mRulesLock = new Object(); 249 /** Currently active network rules by UID. */ 250 private SparseIntArray mUidRules = new SparseIntArray(); 251 /** Set of ifaces that are costly. */ 252 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 253 254 /** 255 * Sometimes we want to refer to the individual network state 256 * trackers separately, and sometimes we just want to treat them 257 * abstractly. 258 */ 259 private NetworkStateTracker mNetTrackers[]; 260 261 /* Handles captive portal check on a network */ 262 private CaptivePortalTracker mCaptivePortalTracker; 263 264 /** 265 * The link properties that define the current links 266 */ 267 private LinkProperties mCurrentLinkProperties[]; 268 269 /** 270 * A per Net list of the PID's that requested access to the net 271 * used both as a refcount and for per-PID DNS selection 272 */ 273 private List<Integer> mNetRequestersPids[]; 274 275 // priority order of the nettrackers 276 // (excluding dynamically set mNetworkPreference) 277 // TODO - move mNetworkTypePreference into this 278 private int[] mPriorityList; 279 280 private Context mContext; 281 private int mNetworkPreference; 282 private int mActiveDefaultNetwork = -1; 283 // 0 is full bad, 100 is full good 284 private int mDefaultInetCondition = 0; 285 private int mDefaultInetConditionPublished = 0; 286 private boolean mInetConditionChangeInFlight = false; 287 private int mDefaultConnectionSequence = 0; 288 289 private Object mDnsLock = new Object(); 290 private int mNumDnsEntries; 291 292 private boolean mTestMode; 293 private static ConnectivityService sServiceInstance; 294 295 private INetworkManagementService mNetd; 296 private INetworkPolicyManager mPolicyManager; 297 298 private static final int ENABLED = 1; 299 private static final int DISABLED = 0; 300 301 private static final boolean ADD = true; 302 private static final boolean REMOVE = false; 303 304 private static final boolean TO_DEFAULT_TABLE = true; 305 private static final boolean TO_SECONDARY_TABLE = false; 306 307 private static final boolean EXEMPT = true; 308 private static final boolean UNEXEMPT = false; 309 310 /** 311 * used internally as a delayed event to make us switch back to the 312 * default network 313 */ 314 private static final int EVENT_RESTORE_DEFAULT_NETWORK = 1; 315 316 /** 317 * used internally to change our mobile data enabled flag 318 */ 319 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 320 321 /** 322 * used internally to synchronize inet condition reports 323 * arg1 = networkType 324 * arg2 = condition (0 bad, 100 good) 325 */ 326 private static final int EVENT_INET_CONDITION_CHANGE = 4; 327 328 /** 329 * used internally to mark the end of inet condition hold periods 330 * arg1 = networkType 331 */ 332 private static final int EVENT_INET_CONDITION_HOLD_END = 5; 333 334 /** 335 * used internally to clear a wakelock when transitioning 336 * from one net to another 337 */ 338 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 339 340 /** 341 * used internally to reload global proxy settings 342 */ 343 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 344 345 /** 346 * used internally to set external dependency met/unmet 347 * arg1 = ENABLED (met) or DISABLED (unmet) 348 * arg2 = NetworkType 349 */ 350 private static final int EVENT_SET_DEPENDENCY_MET = 10; 351 352 /** 353 * used internally to send a sticky broadcast delayed. 354 */ 355 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 356 357 /** 358 * Used internally to 359 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 360 */ 361 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 362 363 private static final int EVENT_VPN_STATE_CHANGED = 13; 364 365 /** 366 * Used internally to disable fail fast of mobile data 367 */ 368 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 369 370 /** 371 * used internally to indicate that data sampling interval is up 372 */ 373 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 374 375 /** 376 * PAC manager has received new port. 377 */ 378 private static final int EVENT_PROXY_HAS_CHANGED = 16; 379 380 /** 381 * used internally when registering NetworkFactories 382 * obj = NetworkFactoryInfo 383 */ 384 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 385 386 /** 387 * used internally when registering NetworkAgents 388 * obj = Messenger 389 */ 390 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 391 392 /** 393 * used to add a network request 394 * includes a NetworkRequestInfo 395 */ 396 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 397 398 /** 399 * indicates a timeout period is over - check if we had a network yet or not 400 * and if not, call the timeout calback (but leave the request live until they 401 * cancel it. 402 * includes a NetworkRequestInfo 403 */ 404 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 405 406 /** 407 * used to add a network listener - no request 408 * includes a NetworkRequestInfo 409 */ 410 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 411 412 /** 413 * used to remove a network request, either a listener or a real request 414 * includes a NetworkRequest 415 */ 416 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 417 418 /** 419 * used internally when registering NetworkFactories 420 * obj = Messenger 421 */ 422 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 423 424 425 /** Handler used for internal events. */ 426 final private InternalHandler mHandler; 427 /** Handler used for incoming {@link NetworkStateTracker} events. */ 428 final private NetworkStateTrackerHandler mTrackerHandler; 429 430 // list of DeathRecipients used to make sure features are turned off when 431 // a process dies 432 private List<FeatureUser> mFeatureUsers; 433 434 private boolean mSystemReady; 435 private Intent mInitialBroadcast; 436 437 private PowerManager.WakeLock mNetTransitionWakeLock; 438 private String mNetTransitionWakeLockCausedBy = ""; 439 private int mNetTransitionWakeLockSerialNumber; 440 private int mNetTransitionWakeLockTimeout; 441 442 private InetAddress mDefaultDns; 443 444 // Lock for protecting access to mAddedRoutes and mExemptAddresses 445 private final Object mRoutesLock = new Object(); 446 447 // this collection is used to refcount the added routes - if there are none left 448 // it's time to remove the route from the route table 449 @GuardedBy("mRoutesLock") 450 private Collection<RouteInfo> mAddedRoutes = new ArrayList<RouteInfo>(); 451 452 // this collection corresponds to the entries of mAddedRoutes that have routing exemptions 453 // used to handle cleanup of exempt rules 454 @GuardedBy("mRoutesLock") 455 private Collection<LinkAddress> mExemptAddresses = new ArrayList<LinkAddress>(); 456 457 // used in DBG mode to track inet condition reports 458 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 459 private ArrayList mInetLog; 460 461 // track the current default http proxy - tell the world if we get a new one (real change) 462 private ProxyInfo mDefaultProxy = null; 463 private Object mProxyLock = new Object(); 464 private boolean mDefaultProxyDisabled = false; 465 466 // track the global proxy. 467 private ProxyInfo mGlobalProxy = null; 468 469 private PacManager mPacManager = null; 470 471 private SettingsObserver mSettingsObserver; 472 473 private AppOpsManager mAppOpsManager; 474 475 NetworkConfig[] mNetConfigs; 476 int mNetworksDefined; 477 478 private static class RadioAttributes { 479 public int mSimultaneity; 480 public int mType; 481 public RadioAttributes(String init) { 482 String fragments[] = init.split(","); 483 mType = Integer.parseInt(fragments[0]); 484 mSimultaneity = Integer.parseInt(fragments[1]); 485 } 486 } 487 RadioAttributes[] mRadioAttributes; 488 489 // the set of network types that can only be enabled by system/sig apps 490 List mProtectedNetworks; 491 492 private DataConnectionStats mDataConnectionStats; 493 494 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 495 496 TelephonyManager mTelephonyManager; 497 498 // sequence number for Networks 499 private final static int MIN_NET_ID = 10; // some reserved marks 500 private final static int MAX_NET_ID = 65535; 501 private int mNextNetId = MIN_NET_ID; 502 503 // sequence number of NetworkRequests 504 private int mNextNetworkRequestId = 1; 505 506 private static final int UID_UNUSED = -1; 507 508 /** 509 * Implements support for the legacy "one network per network type" model. 510 * 511 * We used to have a static array of NetworkStateTrackers, one for each 512 * network type, but that doesn't work any more now that we can have, 513 * for example, more that one wifi network. This class stores all the 514 * NetworkAgentInfo objects that support a given type, but the legacy 515 * API will only see the first one. 516 * 517 * It serves two main purposes: 518 * 519 * 1. Provide information about "the network for a given type" (since this 520 * API only supports one). 521 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 522 * the first network for a given type changes, or if the default network 523 * changes. 524 */ 525 private class LegacyTypeTracker { 526 /** 527 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 528 * Each list holds references to all NetworkAgentInfos that are used to 529 * satisfy requests for that network type. 530 * 531 * This array is built out at startup such that an unsupported network 532 * doesn't get an ArrayList instance, making this a tristate: 533 * unsupported, supported but not active and active. 534 * 535 * The actual lists are populated when we scan the network types that 536 * are supported on this device. 537 */ 538 private ArrayList<NetworkAgentInfo> mTypeLists[]; 539 540 public LegacyTypeTracker() { 541 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 542 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 543 } 544 545 public void addSupportedType(int type) { 546 if (mTypeLists[type] != null) { 547 throw new IllegalStateException( 548 "legacy list for type " + type + "already initialized"); 549 } 550 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 551 } 552 553 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 554 return mNetworkForRequestId.get(mDefaultRequest.requestId) == nai; 555 } 556 557 public boolean isTypeSupported(int type) { 558 return isNetworkTypeValid(type) && mTypeLists[type] != null; 559 } 560 561 public NetworkAgentInfo getNetworkForType(int type) { 562 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 563 return mTypeLists[type].get(0); 564 } else { 565 return null; 566 } 567 } 568 569 public void add(int type, NetworkAgentInfo nai) { 570 if (!isTypeSupported(type)) { 571 return; // Invalid network type. 572 } 573 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 574 575 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 576 if (list.contains(nai)) { 577 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 578 return; 579 } 580 581 if (list.isEmpty() || isDefaultNetwork(nai)) { 582 if (VDBG) log("Sending connected broadcast for type " + type + 583 "isDefaultNetwork=" + isDefaultNetwork(nai)); 584 sendLegacyNetworkBroadcast(nai, true, type); 585 } 586 list.add(nai); 587 } 588 589 public void remove(NetworkAgentInfo nai) { 590 if (VDBG) log("Removing agent " + nai); 591 for (int type = 0; type < mTypeLists.length; type++) { 592 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 593 if (list == null || list.isEmpty()) { 594 continue; 595 } 596 597 boolean wasFirstNetwork = false; 598 if (list.get(0).equals(nai)) { 599 // This network was the first in the list. Send broadcast. 600 wasFirstNetwork = true; 601 } 602 list.remove(nai); 603 604 if (wasFirstNetwork || isDefaultNetwork(nai)) { 605 if (VDBG) log("Sending disconnected broadcast for type " + type + 606 "isDefaultNetwork=" + isDefaultNetwork(nai)); 607 sendLegacyNetworkBroadcast(nai, false, type); 608 } 609 610 if (!list.isEmpty() && wasFirstNetwork) { 611 if (VDBG) log("Other network available for type " + type + 612 ", sending connected broadcast"); 613 sendLegacyNetworkBroadcast(list.get(0), false, type); 614 } 615 } 616 } 617 } 618 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 619 620 public ConnectivityService(Context context, INetworkManagementService netd, 621 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 622 // Currently, omitting a NetworkFactory will create one internally 623 // TODO: create here when we have cleaner WiMAX support 624 this(context, netd, statsService, policyManager, null); 625 } 626 627 public ConnectivityService(Context context, INetworkManagementService netManager, 628 INetworkStatsService statsService, INetworkPolicyManager policyManager, 629 NetworkFactory netFactory) { 630 if (DBG) log("ConnectivityService starting up"); 631 632 NetworkCapabilities netCap = new NetworkCapabilities(); 633 netCap.addNetworkCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 634 netCap.addNetworkCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 635 mDefaultRequest = new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 636 NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(), 637 NetworkRequestInfo.REQUEST); 638 mNetworkRequests.put(mDefaultRequest, nri); 639 640 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 641 handlerThread.start(); 642 mHandler = new InternalHandler(handlerThread.getLooper()); 643 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 644 645 if (netFactory == null) { 646 netFactory = new DefaultNetworkFactory(context, mTrackerHandler); 647 } 648 649 // setup our unique device name 650 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 651 String id = Settings.Secure.getString(context.getContentResolver(), 652 Settings.Secure.ANDROID_ID); 653 if (id != null && id.length() > 0) { 654 String name = new String("android-").concat(id); 655 SystemProperties.set("net.hostname", name); 656 } 657 } 658 659 // read our default dns server ip 660 String dns = Settings.Global.getString(context.getContentResolver(), 661 Settings.Global.DEFAULT_DNS_SERVER); 662 if (dns == null || dns.length() == 0) { 663 dns = context.getResources().getString( 664 com.android.internal.R.string.config_default_dns_server); 665 } 666 try { 667 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 668 } catch (IllegalArgumentException e) { 669 loge("Error setting defaultDns using " + dns); 670 } 671 672 mContext = checkNotNull(context, "missing Context"); 673 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 674 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 675 mKeyStore = KeyStore.getInstance(); 676 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 677 678 try { 679 mPolicyManager.registerListener(mPolicyListener); 680 } catch (RemoteException e) { 681 // ouch, no rules updates means some processes may never get network 682 loge("unable to register INetworkPolicyListener" + e.toString()); 683 } 684 685 final PowerManager powerManager = (PowerManager) context.getSystemService( 686 Context.POWER_SERVICE); 687 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 688 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 689 com.android.internal.R.integer.config_networkTransitionTimeout); 690 691 mNetTrackers = new NetworkStateTracker[ 692 ConnectivityManager.MAX_NETWORK_TYPE+1]; 693 mCurrentLinkProperties = new LinkProperties[ConnectivityManager.MAX_NETWORK_TYPE+1]; 694 695 mRadioAttributes = new RadioAttributes[ConnectivityManager.MAX_RADIO_TYPE+1]; 696 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 697 698 // Load device network attributes from resources 699 String[] raStrings = context.getResources().getStringArray( 700 com.android.internal.R.array.radioAttributes); 701 for (String raString : raStrings) { 702 RadioAttributes r = new RadioAttributes(raString); 703 if (VDBG) log("raString=" + raString + " r=" + r); 704 if (r.mType > ConnectivityManager.MAX_RADIO_TYPE) { 705 loge("Error in radioAttributes - ignoring attempt to define type " + r.mType); 706 continue; 707 } 708 if (mRadioAttributes[r.mType] != null) { 709 loge("Error in radioAttributes - ignoring attempt to redefine type " + 710 r.mType); 711 continue; 712 } 713 mRadioAttributes[r.mType] = r; 714 } 715 716 // TODO: What is the "correct" way to do determine if this is a wifi only device? 717 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 718 log("wifiOnly=" + wifiOnly); 719 String[] naStrings = context.getResources().getStringArray( 720 com.android.internal.R.array.networkAttributes); 721 for (String naString : naStrings) { 722 try { 723 NetworkConfig n = new NetworkConfig(naString); 724 if (VDBG) log("naString=" + naString + " config=" + n); 725 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 726 loge("Error in networkAttributes - ignoring attempt to define type " + 727 n.type); 728 continue; 729 } 730 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 731 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 732 n.type); 733 continue; 734 } 735 if (mNetConfigs[n.type] != null) { 736 loge("Error in networkAttributes - ignoring attempt to redefine type " + 737 n.type); 738 continue; 739 } 740 if (mRadioAttributes[n.radio] == null) { 741 loge("Error in networkAttributes - ignoring attempt to use undefined " + 742 "radio " + n.radio + " in network type " + n.type); 743 continue; 744 } 745 mLegacyTypeTracker.addSupportedType(n.type); 746 747 mNetConfigs[n.type] = n; 748 mNetworksDefined++; 749 } catch(Exception e) { 750 // ignore it - leave the entry null 751 } 752 } 753 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 754 755 mProtectedNetworks = new ArrayList<Integer>(); 756 int[] protectedNetworks = context.getResources().getIntArray( 757 com.android.internal.R.array.config_protectedNetworks); 758 for (int p : protectedNetworks) { 759 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 760 mProtectedNetworks.add(p); 761 } else { 762 if (DBG) loge("Ignoring protectedNetwork " + p); 763 } 764 } 765 766 // high priority first 767 mPriorityList = new int[mNetworksDefined]; 768 { 769 int insertionPoint = mNetworksDefined-1; 770 int currentLowest = 0; 771 int nextLowest = 0; 772 while (insertionPoint > -1) { 773 for (NetworkConfig na : mNetConfigs) { 774 if (na == null) continue; 775 if (na.priority < currentLowest) continue; 776 if (na.priority > currentLowest) { 777 if (na.priority < nextLowest || nextLowest == 0) { 778 nextLowest = na.priority; 779 } 780 continue; 781 } 782 mPriorityList[insertionPoint--] = na.type; 783 } 784 currentLowest = nextLowest; 785 nextLowest = 0; 786 } 787 } 788 789 mNetRequestersPids = 790 (List<Integer> [])new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE+1]; 791 for (int i : mPriorityList) { 792 mNetRequestersPids[i] = new ArrayList<Integer>(); 793 } 794 795 mFeatureUsers = new ArrayList<FeatureUser>(); 796 797 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 798 && SystemProperties.get("ro.build.type").equals("eng"); 799 800 // Create and start trackers for hard-coded networks 801 for (int targetNetworkType : mPriorityList) { 802 final NetworkConfig config = mNetConfigs[targetNetworkType]; 803 final NetworkStateTracker tracker; 804 try { 805 tracker = netFactory.createTracker(targetNetworkType, config); 806 mNetTrackers[targetNetworkType] = tracker; 807 } catch (IllegalArgumentException e) { 808 Slog.e(TAG, "Problem creating " + getNetworkTypeName(targetNetworkType) 809 + " tracker: " + e); 810 continue; 811 } 812 813 tracker.startMonitoring(context, mTrackerHandler); 814 if (config.isDefault()) { 815 tracker.reconnect(); 816 } 817 } 818 819 mTethering = new Tethering(mContext, mNetd, statsService, this, mHandler.getLooper()); 820 821 //set up the listener for user state for creating user VPNs 822 IntentFilter intentFilter = new IntentFilter(); 823 intentFilter.addAction(Intent.ACTION_USER_STARTING); 824 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 825 mContext.registerReceiverAsUser( 826 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 827 mClat = new Nat464Xlat(mContext, mNetd, this, mTrackerHandler); 828 829 try { 830 mNetd.registerObserver(mTethering); 831 mNetd.registerObserver(mDataActivityObserver); 832 mNetd.registerObserver(mClat); 833 } catch (RemoteException e) { 834 loge("Error registering observer :" + e); 835 } 836 837 if (DBG) { 838 mInetLog = new ArrayList(); 839 } 840 841 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 842 mSettingsObserver.observe(mContext); 843 844 mDataConnectionStats = new DataConnectionStats(mContext); 845 mDataConnectionStats.startMonitoring(); 846 847 // start network sampling .. 848 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED, null); 849 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 850 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 851 852 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 853 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 854 855 IntentFilter filter = new IntentFilter(); 856 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 857 mContext.registerReceiver( 858 new BroadcastReceiver() { 859 @Override 860 public void onReceive(Context context, Intent intent) { 861 String action = intent.getAction(); 862 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 863 mHandler.sendMessage(mHandler.obtainMessage 864 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 865 } 866 } 867 }, 868 new IntentFilter(filter)); 869 870 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 871 872 filter = new IntentFilter(); 873 filter.addAction(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 874 mContext.registerReceiver(mProvisioningReceiver, filter); 875 876 mAppOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE); 877 } 878 879 private synchronized int nextNetworkRequestId() { 880 return mNextNetworkRequestId++; 881 } 882 883 private synchronized int nextNetId() { 884 int netId = mNextNetId; 885 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 886 return netId; 887 } 888 889 /** 890 * Factory that creates {@link NetworkStateTracker} instances using given 891 * {@link NetworkConfig}. 892 * 893 * TODO - this is obsolete and will be deleted. It's replaced by the 894 * registerNetworkFactory call and protocol. 895 * @Deprecated in favor of registerNetworkFactory dynamic bindings 896 */ 897 public interface NetworkFactory { 898 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config); 899 } 900 901 private static class DefaultNetworkFactory implements NetworkFactory { 902 private final Context mContext; 903 private final Handler mTrackerHandler; 904 905 public DefaultNetworkFactory(Context context, Handler trackerHandler) { 906 mContext = context; 907 mTrackerHandler = trackerHandler; 908 } 909 910 @Override 911 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config) { 912 switch (config.radio) { 913 case TYPE_DUMMY: 914 return new DummyDataStateTracker(targetNetworkType, config.name); 915 case TYPE_BLUETOOTH: 916 return BluetoothTetheringDataTracker.getInstance(); 917 case TYPE_WIMAX: 918 return makeWimaxStateTracker(mContext, mTrackerHandler); 919 case TYPE_PROXY: 920 return new ProxyDataTracker(); 921 default: 922 throw new IllegalArgumentException( 923 "Trying to create a NetworkStateTracker for an unknown radio type: " 924 + config.radio); 925 } 926 } 927 } 928 929 /** 930 * Loads external WiMAX library and registers as system service, returning a 931 * {@link NetworkStateTracker} for WiMAX. Caller is still responsible for 932 * invoking {@link NetworkStateTracker#startMonitoring(Context, Handler)}. 933 */ 934 private static NetworkStateTracker makeWimaxStateTracker( 935 Context context, Handler trackerHandler) { 936 // Initialize Wimax 937 DexClassLoader wimaxClassLoader; 938 Class wimaxStateTrackerClass = null; 939 Class wimaxServiceClass = null; 940 Class wimaxManagerClass; 941 String wimaxJarLocation; 942 String wimaxLibLocation; 943 String wimaxManagerClassName; 944 String wimaxServiceClassName; 945 String wimaxStateTrackerClassName; 946 947 NetworkStateTracker wimaxStateTracker = null; 948 949 boolean isWimaxEnabled = context.getResources().getBoolean( 950 com.android.internal.R.bool.config_wimaxEnabled); 951 952 if (isWimaxEnabled) { 953 try { 954 wimaxJarLocation = context.getResources().getString( 955 com.android.internal.R.string.config_wimaxServiceJarLocation); 956 wimaxLibLocation = context.getResources().getString( 957 com.android.internal.R.string.config_wimaxNativeLibLocation); 958 wimaxManagerClassName = context.getResources().getString( 959 com.android.internal.R.string.config_wimaxManagerClassname); 960 wimaxServiceClassName = context.getResources().getString( 961 com.android.internal.R.string.config_wimaxServiceClassname); 962 wimaxStateTrackerClassName = context.getResources().getString( 963 com.android.internal.R.string.config_wimaxStateTrackerClassname); 964 965 if (DBG) log("wimaxJarLocation: " + wimaxJarLocation); 966 wimaxClassLoader = new DexClassLoader(wimaxJarLocation, 967 new ContextWrapper(context).getCacheDir().getAbsolutePath(), 968 wimaxLibLocation, ClassLoader.getSystemClassLoader()); 969 970 try { 971 wimaxManagerClass = wimaxClassLoader.loadClass(wimaxManagerClassName); 972 wimaxStateTrackerClass = wimaxClassLoader.loadClass(wimaxStateTrackerClassName); 973 wimaxServiceClass = wimaxClassLoader.loadClass(wimaxServiceClassName); 974 } catch (ClassNotFoundException ex) { 975 loge("Exception finding Wimax classes: " + ex.toString()); 976 return null; 977 } 978 } catch(Resources.NotFoundException ex) { 979 loge("Wimax Resources does not exist!!! "); 980 return null; 981 } 982 983 try { 984 if (DBG) log("Starting Wimax Service... "); 985 986 Constructor wmxStTrkrConst = wimaxStateTrackerClass.getConstructor 987 (new Class[] {Context.class, Handler.class}); 988 wimaxStateTracker = (NetworkStateTracker) wmxStTrkrConst.newInstance( 989 context, trackerHandler); 990 991 Constructor wmxSrvConst = wimaxServiceClass.getDeclaredConstructor 992 (new Class[] {Context.class, wimaxStateTrackerClass}); 993 wmxSrvConst.setAccessible(true); 994 IBinder svcInvoker = (IBinder)wmxSrvConst.newInstance(context, wimaxStateTracker); 995 wmxSrvConst.setAccessible(false); 996 997 ServiceManager.addService(WimaxManagerConstants.WIMAX_SERVICE, svcInvoker); 998 999 } catch(Exception ex) { 1000 loge("Exception creating Wimax classes: " + ex.toString()); 1001 return null; 1002 } 1003 } else { 1004 loge("Wimax is not enabled or not added to the network attributes!!! "); 1005 return null; 1006 } 1007 1008 return wimaxStateTracker; 1009 } 1010 1011 private int getConnectivityChangeDelay() { 1012 final ContentResolver cr = mContext.getContentResolver(); 1013 1014 /** Check system properties for the default value then use secure settings value, if any. */ 1015 int defaultDelay = SystemProperties.getInt( 1016 "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY, 1017 ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT); 1018 return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY, 1019 defaultDelay); 1020 } 1021 1022 private boolean teardown(NetworkStateTracker netTracker) { 1023 if (netTracker.teardown()) { 1024 netTracker.setTeardownRequested(true); 1025 return true; 1026 } else { 1027 return false; 1028 } 1029 } 1030 1031 /** 1032 * Check if UID should be blocked from using the network represented by the 1033 * given {@link NetworkStateTracker}. 1034 */ 1035 private boolean isNetworkBlocked(int networkType, int uid) { 1036 final boolean networkCostly; 1037 final int uidRules; 1038 1039 LinkProperties lp = getLinkPropertiesForType(networkType); 1040 final String iface = (lp == null ? "" : lp.getInterfaceName()); 1041 synchronized (mRulesLock) { 1042 networkCostly = mMeteredIfaces.contains(iface); 1043 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1044 } 1045 1046 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 1047 return true; 1048 } 1049 1050 // no restrictive rules; network is visible 1051 return false; 1052 } 1053 1054 /** 1055 * Return a filtered {@link NetworkInfo}, potentially marked 1056 * {@link DetailedState#BLOCKED} based on 1057 * {@link #isNetworkBlocked}. 1058 */ 1059 private NetworkInfo getFilteredNetworkInfo(int networkType, int uid) { 1060 NetworkInfo info = getNetworkInfoForType(networkType); 1061 if (isNetworkBlocked(networkType, uid)) { 1062 // network is blocked; clone and override state 1063 info = new NetworkInfo(info); 1064 info.setDetailedState(DetailedState.BLOCKED, null, null); 1065 } 1066 if (mLockdownTracker != null) { 1067 info = mLockdownTracker.augmentNetworkInfo(info); 1068 } 1069 return info; 1070 } 1071 1072 /** 1073 * Return NetworkInfo for the active (i.e., connected) network interface. 1074 * It is assumed that at most one network is active at a time. If more 1075 * than one is active, it is indeterminate which will be returned. 1076 * @return the info for the active network, or {@code null} if none is 1077 * active 1078 */ 1079 @Override 1080 public NetworkInfo getActiveNetworkInfo() { 1081 enforceAccessPermission(); 1082 final int uid = Binder.getCallingUid(); 1083 return getNetworkInfo(mActiveDefaultNetwork, uid); 1084 } 1085 1086 // only called when the default request is satisfied 1087 private void updateActiveDefaultNetwork(NetworkAgentInfo nai) { 1088 if (nai != null) { 1089 mActiveDefaultNetwork = nai.networkInfo.getType(); 1090 } else { 1091 mActiveDefaultNetwork = TYPE_NONE; 1092 } 1093 } 1094 1095 /** 1096 * Find the first Provisioning network. 1097 * 1098 * @return NetworkInfo or null if none. 1099 */ 1100 private NetworkInfo getProvisioningNetworkInfo() { 1101 enforceAccessPermission(); 1102 1103 // Find the first Provisioning Network 1104 NetworkInfo provNi = null; 1105 for (NetworkInfo ni : getAllNetworkInfo()) { 1106 if (ni.isConnectedToProvisioningNetwork()) { 1107 provNi = ni; 1108 break; 1109 } 1110 } 1111 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 1112 return provNi; 1113 } 1114 1115 /** 1116 * Find the first Provisioning network or the ActiveDefaultNetwork 1117 * if there is no Provisioning network 1118 * 1119 * @return NetworkInfo or null if none. 1120 */ 1121 @Override 1122 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 1123 enforceAccessPermission(); 1124 1125 NetworkInfo provNi = getProvisioningNetworkInfo(); 1126 if (provNi == null) { 1127 final int uid = Binder.getCallingUid(); 1128 provNi = getNetworkInfo(mActiveDefaultNetwork, uid); 1129 } 1130 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 1131 return provNi; 1132 } 1133 1134 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1135 enforceAccessPermission(); 1136 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 1137 return getNetworkInfoForType(mActiveDefaultNetwork); 1138 } 1139 return null; 1140 } 1141 1142 @Override 1143 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1144 enforceConnectivityInternalPermission(); 1145 return getNetworkInfo(mActiveDefaultNetwork, uid); 1146 } 1147 1148 @Override 1149 public NetworkInfo getNetworkInfo(int networkType) { 1150 enforceAccessPermission(); 1151 final int uid = Binder.getCallingUid(); 1152 return getNetworkInfo(networkType, uid); 1153 } 1154 1155 private NetworkInfo getNetworkInfo(int networkType, int uid) { 1156 NetworkInfo info = null; 1157 if (isNetworkTypeValid(networkType)) { 1158 if (getNetworkInfoForType(networkType) != null) { 1159 info = getFilteredNetworkInfo(networkType, uid); 1160 } 1161 } 1162 return info; 1163 } 1164 1165 @Override 1166 public NetworkInfo[] getAllNetworkInfo() { 1167 enforceAccessPermission(); 1168 final int uid = Binder.getCallingUid(); 1169 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1170 synchronized (mRulesLock) { 1171 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1172 networkType++) { 1173 if (getNetworkInfoForType(networkType) != null) { 1174 result.add(getFilteredNetworkInfo(networkType, uid)); 1175 } 1176 } 1177 } 1178 return result.toArray(new NetworkInfo[result.size()]); 1179 } 1180 1181 @Override 1182 public boolean isNetworkSupported(int networkType) { 1183 enforceAccessPermission(); 1184 return (isNetworkTypeValid(networkType) && (getNetworkInfoForType(networkType) != null)); 1185 } 1186 1187 /** 1188 * Return LinkProperties for the active (i.e., connected) default 1189 * network interface. It is assumed that at most one default network 1190 * is active at a time. If more than one is active, it is indeterminate 1191 * which will be returned. 1192 * @return the ip properties for the active network, or {@code null} if 1193 * none is active 1194 */ 1195 @Override 1196 public LinkProperties getActiveLinkProperties() { 1197 return getLinkPropertiesForType(mActiveDefaultNetwork); 1198 } 1199 1200 @Override 1201 public LinkProperties getLinkPropertiesForType(int networkType) { 1202 enforceAccessPermission(); 1203 if (isNetworkTypeValid(networkType)) { 1204 return getLinkPropertiesForTypeInternal(networkType); 1205 } 1206 return null; 1207 } 1208 1209 // TODO - this should be ALL networks 1210 @Override 1211 public LinkProperties getLinkProperties(Network network) { 1212 enforceAccessPermission(); 1213 NetworkAgentInfo nai = mNetworkForNetId.get(network.netId); 1214 if (nai != null) return new LinkProperties(nai.linkProperties); 1215 return null; 1216 } 1217 1218 @Override 1219 public NetworkCapabilities getNetworkCapabilities(Network network) { 1220 enforceAccessPermission(); 1221 NetworkAgentInfo nai = mNetworkForNetId.get(network.netId); 1222 if (nai != null) return new NetworkCapabilities(nai.networkCapabilities); 1223 return null; 1224 } 1225 1226 @Override 1227 public NetworkState[] getAllNetworkState() { 1228 enforceAccessPermission(); 1229 final int uid = Binder.getCallingUid(); 1230 final ArrayList<NetworkState> result = Lists.newArrayList(); 1231 synchronized (mRulesLock) { 1232 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1233 networkType++) { 1234 if (getNetworkInfoForType(networkType) != null) { 1235 final NetworkInfo info = getFilteredNetworkInfo(networkType, uid); 1236 final LinkProperties lp = getLinkPropertiesForTypeInternal(networkType); 1237 final NetworkCapabilities netcap = getNetworkCapabilitiesForType(networkType); 1238 result.add(new NetworkState(info, lp, netcap)); 1239 } 1240 } 1241 } 1242 return result.toArray(new NetworkState[result.size()]); 1243 } 1244 1245 private NetworkState getNetworkStateUnchecked(int networkType) { 1246 if (isNetworkTypeValid(networkType)) { 1247 NetworkInfo info = getNetworkInfoForType(networkType); 1248 if (info != null) { 1249 return new NetworkState(info, 1250 getLinkPropertiesForTypeInternal(networkType), 1251 getNetworkCapabilitiesForType(networkType)); 1252 } 1253 } 1254 return null; 1255 } 1256 1257 @Override 1258 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1259 enforceAccessPermission(); 1260 1261 final long token = Binder.clearCallingIdentity(); 1262 try { 1263 final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork); 1264 if (state != null) { 1265 try { 1266 return mPolicyManager.getNetworkQuotaInfo(state); 1267 } catch (RemoteException e) { 1268 } 1269 } 1270 return null; 1271 } finally { 1272 Binder.restoreCallingIdentity(token); 1273 } 1274 } 1275 1276 @Override 1277 public boolean isActiveNetworkMetered() { 1278 enforceAccessPermission(); 1279 final long token = Binder.clearCallingIdentity(); 1280 try { 1281 return isNetworkMeteredUnchecked(mActiveDefaultNetwork); 1282 } finally { 1283 Binder.restoreCallingIdentity(token); 1284 } 1285 } 1286 1287 private boolean isNetworkMeteredUnchecked(int networkType) { 1288 final NetworkState state = getNetworkStateUnchecked(networkType); 1289 if (state != null) { 1290 try { 1291 return mPolicyManager.isNetworkMetered(state); 1292 } catch (RemoteException e) { 1293 } 1294 } 1295 return false; 1296 } 1297 1298 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1299 @Override 1300 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1301 int deviceType = Integer.parseInt(label); 1302 sendDataActivityBroadcast(deviceType, active, tsNanos); 1303 } 1304 }; 1305 1306 /** 1307 * Used to notice when the calling process dies so we can self-expire 1308 * 1309 * Also used to know if the process has cleaned up after itself when 1310 * our auto-expire timer goes off. The timer has a link to an object. 1311 * 1312 */ 1313 private class FeatureUser implements IBinder.DeathRecipient { 1314 int mNetworkType; 1315 String mFeature; 1316 IBinder mBinder; 1317 int mPid; 1318 int mUid; 1319 long mCreateTime; 1320 1321 FeatureUser(int type, String feature, IBinder binder) { 1322 super(); 1323 mNetworkType = type; 1324 mFeature = feature; 1325 mBinder = binder; 1326 mPid = getCallingPid(); 1327 mUid = getCallingUid(); 1328 mCreateTime = System.currentTimeMillis(); 1329 1330 try { 1331 mBinder.linkToDeath(this, 0); 1332 } catch (RemoteException e) { 1333 binderDied(); 1334 } 1335 } 1336 1337 void unlinkDeathRecipient() { 1338 mBinder.unlinkToDeath(this, 0); 1339 } 1340 1341 public void binderDied() { 1342 log("ConnectivityService FeatureUser binderDied(" + 1343 mNetworkType + ", " + mFeature + ", " + mBinder + "), created " + 1344 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1345 stopUsingNetworkFeature(this, false); 1346 } 1347 1348 public void expire() { 1349 if (VDBG) { 1350 log("ConnectivityService FeatureUser expire(" + 1351 mNetworkType + ", " + mFeature + ", " + mBinder +"), created " + 1352 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1353 } 1354 stopUsingNetworkFeature(this, false); 1355 } 1356 1357 public boolean isSameUser(FeatureUser u) { 1358 if (u == null) return false; 1359 1360 return isSameUser(u.mPid, u.mUid, u.mNetworkType, u.mFeature); 1361 } 1362 1363 public boolean isSameUser(int pid, int uid, int networkType, String feature) { 1364 if ((mPid == pid) && (mUid == uid) && (mNetworkType == networkType) && 1365 TextUtils.equals(mFeature, feature)) { 1366 return true; 1367 } 1368 return false; 1369 } 1370 1371 public String toString() { 1372 return "FeatureUser("+mNetworkType+","+mFeature+","+mPid+","+mUid+"), created " + 1373 (System.currentTimeMillis() - mCreateTime) + " mSec ago"; 1374 } 1375 } 1376 1377 // javadoc from interface 1378 public int startUsingNetworkFeature(int networkType, String feature, 1379 IBinder binder) { 1380 long startTime = 0; 1381 if (DBG) { 1382 startTime = SystemClock.elapsedRealtime(); 1383 } 1384 if (VDBG) { 1385 log("startUsingNetworkFeature for net " + networkType + ": " + feature + ", uid=" 1386 + Binder.getCallingUid()); 1387 } 1388 enforceChangePermission(); 1389 try { 1390 if (!ConnectivityManager.isNetworkTypeValid(networkType) || 1391 mNetConfigs[networkType] == null) { 1392 return PhoneConstants.APN_REQUEST_FAILED; 1393 } 1394 1395 FeatureUser f = new FeatureUser(networkType, feature, binder); 1396 1397 // TODO - move this into individual networktrackers 1398 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1399 1400 if (mLockdownEnabled) { 1401 // Since carrier APNs usually aren't available from VPN 1402 // endpoint, mark them as unavailable. 1403 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1404 } 1405 1406 if (mProtectedNetworks.contains(usedNetworkType)) { 1407 enforceConnectivityInternalPermission(); 1408 } 1409 1410 // if UID is restricted, don't allow them to bring up metered APNs 1411 final boolean networkMetered = isNetworkMeteredUnchecked(usedNetworkType); 1412 final int uidRules; 1413 synchronized (mRulesLock) { 1414 uidRules = mUidRules.get(Binder.getCallingUid(), RULE_ALLOW_ALL); 1415 } 1416 if (networkMetered && (uidRules & RULE_REJECT_METERED) != 0) { 1417 return PhoneConstants.APN_REQUEST_FAILED; 1418 } 1419 1420 NetworkStateTracker network = mNetTrackers[usedNetworkType]; 1421 if (network != null) { 1422 Integer currentPid = new Integer(getCallingPid()); 1423 if (usedNetworkType != networkType) { 1424 NetworkInfo ni = network.getNetworkInfo(); 1425 1426 if (ni.isAvailable() == false) { 1427 if (!TextUtils.equals(feature,Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 1428 if (DBG) log("special network not available ni=" + ni.getTypeName()); 1429 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1430 } else { 1431 // else make the attempt anyway - probably giving REQUEST_STARTED below 1432 if (DBG) { 1433 log("special network not available, but try anyway ni=" + 1434 ni.getTypeName()); 1435 } 1436 } 1437 } 1438 1439 int restoreTimer = getRestoreDefaultNetworkDelay(usedNetworkType); 1440 1441 synchronized(this) { 1442 boolean addToList = true; 1443 if (restoreTimer < 0) { 1444 // In case there is no timer is specified for the feature, 1445 // make sure we don't add duplicate entry with the same request. 1446 for (FeatureUser u : mFeatureUsers) { 1447 if (u.isSameUser(f)) { 1448 // Duplicate user is found. Do not add. 1449 addToList = false; 1450 break; 1451 } 1452 } 1453 } 1454 1455 if (addToList) mFeatureUsers.add(f); 1456 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1457 // this gets used for per-pid dns when connected 1458 mNetRequestersPids[usedNetworkType].add(currentPid); 1459 } 1460 } 1461 1462 if (restoreTimer >= 0) { 1463 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1464 EVENT_RESTORE_DEFAULT_NETWORK, f), restoreTimer); 1465 } 1466 1467 if ((ni.isConnectedOrConnecting() == true) && 1468 !network.isTeardownRequested()) { 1469 if (ni.isConnected() == true) { 1470 final long token = Binder.clearCallingIdentity(); 1471 try { 1472 // add the pid-specific dns 1473 handleDnsConfigurationChange(usedNetworkType); 1474 if (VDBG) log("special network already active"); 1475 } finally { 1476 Binder.restoreCallingIdentity(token); 1477 } 1478 return PhoneConstants.APN_ALREADY_ACTIVE; 1479 } 1480 if (VDBG) log("special network already connecting"); 1481 return PhoneConstants.APN_REQUEST_STARTED; 1482 } 1483 1484 // check if the radio in play can make another contact 1485 // assume if cannot for now 1486 1487 if (DBG) { 1488 log("startUsingNetworkFeature reconnecting to " + networkType + ": " + 1489 feature); 1490 } 1491 if (network.reconnect()) { 1492 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_STARTED"); 1493 return PhoneConstants.APN_REQUEST_STARTED; 1494 } else { 1495 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_FAILED"); 1496 return PhoneConstants.APN_REQUEST_FAILED; 1497 } 1498 } else { 1499 // need to remember this unsupported request so we respond appropriately on stop 1500 synchronized(this) { 1501 mFeatureUsers.add(f); 1502 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1503 // this gets used for per-pid dns when connected 1504 mNetRequestersPids[usedNetworkType].add(currentPid); 1505 } 1506 } 1507 if (DBG) log("startUsingNetworkFeature X: return -1 unsupported feature."); 1508 return -1; 1509 } 1510 } 1511 if (DBG) log("startUsingNetworkFeature X: return APN_TYPE_NOT_AVAILABLE"); 1512 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1513 } finally { 1514 if (DBG) { 1515 final long execTime = SystemClock.elapsedRealtime() - startTime; 1516 if (execTime > 250) { 1517 loge("startUsingNetworkFeature took too long: " + execTime + "ms"); 1518 } else { 1519 if (VDBG) log("startUsingNetworkFeature took " + execTime + "ms"); 1520 } 1521 } 1522 } 1523 } 1524 1525 // javadoc from interface 1526 public int stopUsingNetworkFeature(int networkType, String feature) { 1527 enforceChangePermission(); 1528 1529 int pid = getCallingPid(); 1530 int uid = getCallingUid(); 1531 1532 FeatureUser u = null; 1533 boolean found = false; 1534 1535 synchronized(this) { 1536 for (FeatureUser x : mFeatureUsers) { 1537 if (x.isSameUser(pid, uid, networkType, feature)) { 1538 u = x; 1539 found = true; 1540 break; 1541 } 1542 } 1543 } 1544 if (found && u != null) { 1545 if (VDBG) log("stopUsingNetworkFeature: X"); 1546 // stop regardless of how many other time this proc had called start 1547 return stopUsingNetworkFeature(u, true); 1548 } else { 1549 // none found! 1550 if (VDBG) log("stopUsingNetworkFeature: X not a live request, ignoring"); 1551 return 1; 1552 } 1553 } 1554 1555 private int stopUsingNetworkFeature(FeatureUser u, boolean ignoreDups) { 1556 int networkType = u.mNetworkType; 1557 String feature = u.mFeature; 1558 int pid = u.mPid; 1559 int uid = u.mUid; 1560 1561 NetworkStateTracker tracker = null; 1562 boolean callTeardown = false; // used to carry our decision outside of sync block 1563 1564 if (VDBG) { 1565 log("stopUsingNetworkFeature: net " + networkType + ": " + feature); 1566 } 1567 1568 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1569 if (DBG) { 1570 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1571 ", net is invalid"); 1572 } 1573 return -1; 1574 } 1575 1576 // need to link the mFeatureUsers list with the mNetRequestersPids state in this 1577 // sync block 1578 synchronized(this) { 1579 // check if this process still has an outstanding start request 1580 if (!mFeatureUsers.contains(u)) { 1581 if (VDBG) { 1582 log("stopUsingNetworkFeature: this process has no outstanding requests" + 1583 ", ignoring"); 1584 } 1585 return 1; 1586 } 1587 u.unlinkDeathRecipient(); 1588 mFeatureUsers.remove(mFeatureUsers.indexOf(u)); 1589 // If we care about duplicate requests, check for that here. 1590 // 1591 // This is done to support the extension of a request - the app 1592 // can request we start the network feature again and renew the 1593 // auto-shutoff delay. Normal "stop" calls from the app though 1594 // do not pay attention to duplicate requests - in effect the 1595 // API does not refcount and a single stop will counter multiple starts. 1596 if (ignoreDups == false) { 1597 for (FeatureUser x : mFeatureUsers) { 1598 if (x.isSameUser(u)) { 1599 if (VDBG) log("stopUsingNetworkFeature: dup is found, ignoring"); 1600 return 1; 1601 } 1602 } 1603 } 1604 1605 // TODO - move to individual network trackers 1606 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1607 1608 tracker = mNetTrackers[usedNetworkType]; 1609 if (tracker == null) { 1610 if (DBG) { 1611 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1612 " no known tracker for used net type " + usedNetworkType); 1613 } 1614 return -1; 1615 } 1616 if (usedNetworkType != networkType) { 1617 Integer currentPid = new Integer(pid); 1618 mNetRequestersPids[usedNetworkType].remove(currentPid); 1619 1620 final long token = Binder.clearCallingIdentity(); 1621 try { 1622 reassessPidDns(pid, true); 1623 } finally { 1624 Binder.restoreCallingIdentity(token); 1625 } 1626 flushVmDnsCache(); 1627 if (mNetRequestersPids[usedNetworkType].size() != 0) { 1628 if (VDBG) { 1629 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1630 " others still using it"); 1631 } 1632 return 1; 1633 } 1634 callTeardown = true; 1635 } else { 1636 if (DBG) { 1637 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1638 " not a known feature - dropping"); 1639 } 1640 } 1641 } 1642 1643 if (callTeardown) { 1644 if (DBG) { 1645 log("stopUsingNetworkFeature: teardown net " + networkType + ": " + feature); 1646 } 1647 tracker.teardown(); 1648 return 1; 1649 } else { 1650 return -1; 1651 } 1652 } 1653 1654 /** 1655 * Check if the address falls into any of currently running VPN's route's. 1656 */ 1657 private boolean isAddressUnderVpn(InetAddress address) { 1658 synchronized (mVpns) { 1659 synchronized (mRoutesLock) { 1660 int uid = UserHandle.getCallingUserId(); 1661 Vpn vpn = mVpns.get(uid); 1662 if (vpn == null) { 1663 return false; 1664 } 1665 1666 // Check if an exemption exists for this address. 1667 for (LinkAddress destination : mExemptAddresses) { 1668 if (!NetworkUtils.addressTypeMatches(address, destination.getAddress())) { 1669 continue; 1670 } 1671 1672 int prefix = destination.getPrefixLength(); 1673 InetAddress addrMasked = NetworkUtils.getNetworkPart(address, prefix); 1674 InetAddress destMasked = NetworkUtils.getNetworkPart(destination.getAddress(), 1675 prefix); 1676 1677 if (addrMasked.equals(destMasked)) { 1678 return false; 1679 } 1680 } 1681 1682 // Finally check if the address is covered by the VPN. 1683 return vpn.isAddressCovered(address); 1684 } 1685 } 1686 } 1687 1688 /** 1689 * @deprecated use requestRouteToHostAddress instead 1690 * 1691 * Ensure that a network route exists to deliver traffic to the specified 1692 * host via the specified network interface. 1693 * @param networkType the type of the network over which traffic to the 1694 * specified host is to be routed 1695 * @param hostAddress the IP address of the host to which the route is 1696 * desired 1697 * @return {@code true} on success, {@code false} on failure 1698 */ 1699 public boolean requestRouteToHost(int networkType, int hostAddress, String packageName) { 1700 InetAddress inetAddress = NetworkUtils.intToInetAddress(hostAddress); 1701 1702 if (inetAddress == null) { 1703 return false; 1704 } 1705 1706 return requestRouteToHostAddress(networkType, inetAddress.getAddress(), packageName); 1707 } 1708 1709 /** 1710 * Ensure that a network route exists to deliver traffic to the specified 1711 * host via the specified network interface. 1712 * @param networkType the type of the network over which traffic to the 1713 * specified host is to be routed 1714 * @param hostAddress the IP address of the host to which the route is 1715 * desired 1716 * @return {@code true} on success, {@code false} on failure 1717 */ 1718 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress, 1719 String packageName) { 1720 enforceChangePermission(); 1721 if (mProtectedNetworks.contains(networkType)) { 1722 enforceConnectivityInternalPermission(); 1723 } 1724 boolean exempt; 1725 InetAddress addr; 1726 try { 1727 addr = InetAddress.getByAddress(hostAddress); 1728 } catch (UnknownHostException e) { 1729 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1730 return false; 1731 } 1732 // System apps may request routes bypassing the VPN to keep other networks working. 1733 if (Binder.getCallingUid() == Process.SYSTEM_UID) { 1734 exempt = true; 1735 } else { 1736 mAppOpsManager.checkPackage(Binder.getCallingUid(), packageName); 1737 try { 1738 ApplicationInfo info = mContext.getPackageManager().getApplicationInfo(packageName, 1739 0); 1740 exempt = (info.flags & ApplicationInfo.FLAG_SYSTEM) != 0; 1741 } catch (NameNotFoundException e) { 1742 throw new IllegalArgumentException("Failed to find calling package details", e); 1743 } 1744 } 1745 1746 // Non-exempt routeToHost's can only be added if the host is not covered by the VPN. 1747 // This can be either because the VPN's routes do not cover the destination or a 1748 // system application added an exemption that covers this destination. 1749 if (!exempt && isAddressUnderVpn(addr)) { 1750 return false; 1751 } 1752 1753 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1754 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1755 return false; 1756 } 1757 1758 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1759 if (nai == null) { 1760 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1761 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1762 } else { 1763 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1764 } 1765 return false; 1766 } 1767 1768 DetailedState netState = nai.networkInfo.getDetailedState(); 1769 1770 if ((netState != DetailedState.CONNECTED && 1771 netState != DetailedState.CAPTIVE_PORTAL_CHECK)) { 1772 if (VDBG) { 1773 log("requestRouteToHostAddress on down network " 1774 + "(" + networkType + ") - dropped" 1775 + " netState=" + netState); 1776 } 1777 return false; 1778 } 1779 final int uid = Binder.getCallingUid(); 1780 final long token = Binder.clearCallingIdentity(); 1781 try { 1782 LinkProperties lp = nai.linkProperties; 1783 boolean ok = modifyRouteToAddress(lp, addr, ADD, TO_DEFAULT_TABLE, exempt, 1784 nai.network.netId, uid); 1785 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1786 return ok; 1787 } finally { 1788 Binder.restoreCallingIdentity(token); 1789 } 1790 } 1791 1792 private boolean addRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, 1793 boolean exempt, int netId) { 1794 return modifyRoute(p, r, 0, ADD, toDefaultTable, exempt, netId, false, UID_UNUSED); 1795 } 1796 1797 private boolean removeRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, int netId) { 1798 return modifyRoute(p, r, 0, REMOVE, toDefaultTable, UNEXEMPT, netId, false, UID_UNUSED); 1799 } 1800 1801 private boolean modifyRouteToAddress(LinkProperties lp, InetAddress addr, boolean doAdd, 1802 boolean toDefaultTable, boolean exempt, int netId, int uid) { 1803 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1804 if (bestRoute == null) { 1805 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1806 } else { 1807 String iface = bestRoute.getInterface(); 1808 if (bestRoute.getGateway().equals(addr)) { 1809 // if there is no better route, add the implied hostroute for our gateway 1810 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1811 } else { 1812 // if we will connect to this through another route, add a direct route 1813 // to it's gateway 1814 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1815 } 1816 } 1817 return modifyRoute(lp, bestRoute, 0, doAdd, toDefaultTable, exempt, netId, true, uid); 1818 } 1819 1820 /* 1821 * TODO: Clean all this stuff up. Once we have UID-based routing, stuff will break due to 1822 * incorrect tracking of mAddedRoutes, so a cleanup becomes necessary and urgent. But at 1823 * the same time, there'll be no more need to track mAddedRoutes or mExemptAddresses, 1824 * or even have the concept of an exempt address, or do things like "selectBestRoute", or 1825 * determine "default" vs "secondary" table, etc., so the cleanup becomes possible. 1826 */ 1827 private boolean modifyRoute(LinkProperties lp, RouteInfo r, int cycleCount, boolean doAdd, 1828 boolean toDefaultTable, boolean exempt, int netId, boolean legacy, int uid) { 1829 if ((lp == null) || (r == null)) { 1830 if (DBG) log("modifyRoute got unexpected null: " + lp + ", " + r); 1831 return false; 1832 } 1833 1834 if (cycleCount > MAX_HOSTROUTE_CYCLE_COUNT) { 1835 loge("Error modifying route - too much recursion"); 1836 return false; 1837 } 1838 1839 String ifaceName = r.getInterface(); 1840 if(ifaceName == null) { 1841 loge("Error modifying route - no interface name"); 1842 return false; 1843 } 1844 if (r.hasGateway()) { 1845 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), r.getGateway()); 1846 if (bestRoute != null) { 1847 if (bestRoute.getGateway().equals(r.getGateway())) { 1848 // if there is no better route, add the implied hostroute for our gateway 1849 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), ifaceName); 1850 } else { 1851 // if we will connect to our gateway through another route, add a direct 1852 // route to it's gateway 1853 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), 1854 bestRoute.getGateway(), 1855 ifaceName); 1856 } 1857 modifyRoute(lp, bestRoute, cycleCount+1, doAdd, toDefaultTable, exempt, netId, 1858 legacy, uid); 1859 } 1860 } 1861 if (doAdd) { 1862 if (VDBG) log("Adding " + r + " for interface " + ifaceName); 1863 try { 1864 if (toDefaultTable) { 1865 synchronized (mRoutesLock) { 1866 // only track default table - only one apps can effect 1867 mAddedRoutes.add(r); 1868 if (legacy) { 1869 mNetd.addLegacyRouteForNetId(netId, r, uid); 1870 } else { 1871 mNetd.addRoute(netId, r); 1872 } 1873 if (exempt) { 1874 LinkAddress dest = r.getDestinationLinkAddress(); 1875 if (!mExemptAddresses.contains(dest)) { 1876 mNetd.setHostExemption(dest); 1877 mExemptAddresses.add(dest); 1878 } 1879 } 1880 } 1881 } else { 1882 if (legacy) { 1883 mNetd.addLegacyRouteForNetId(netId, r, uid); 1884 } else { 1885 mNetd.addRoute(netId, r); 1886 } 1887 } 1888 } catch (Exception e) { 1889 // never crash - catch them all 1890 if (DBG) loge("Exception trying to add a route: " + e); 1891 return false; 1892 } 1893 } else { 1894 // if we remove this one and there are no more like it, then refcount==0 and 1895 // we can remove it from the table 1896 if (toDefaultTable) { 1897 synchronized (mRoutesLock) { 1898 mAddedRoutes.remove(r); 1899 if (mAddedRoutes.contains(r) == false) { 1900 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1901 try { 1902 if (legacy) { 1903 mNetd.removeLegacyRouteForNetId(netId, r, uid); 1904 } else { 1905 mNetd.removeRoute(netId, r); 1906 } 1907 LinkAddress dest = r.getDestinationLinkAddress(); 1908 if (mExemptAddresses.contains(dest)) { 1909 mNetd.clearHostExemption(dest); 1910 mExemptAddresses.remove(dest); 1911 } 1912 } catch (Exception e) { 1913 // never crash - catch them all 1914 if (VDBG) loge("Exception trying to remove a route: " + e); 1915 return false; 1916 } 1917 } else { 1918 if (VDBG) log("not removing " + r + " as it's still in use"); 1919 } 1920 } 1921 } else { 1922 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1923 try { 1924 if (legacy) { 1925 mNetd.removeLegacyRouteForNetId(netId, r, uid); 1926 } else { 1927 mNetd.removeRoute(netId, r); 1928 } 1929 } catch (Exception e) { 1930 // never crash - catch them all 1931 if (VDBG) loge("Exception trying to remove a route: " + e); 1932 return false; 1933 } 1934 } 1935 } 1936 return true; 1937 } 1938 1939 public void setDataDependency(int networkType, boolean met) { 1940 enforceConnectivityInternalPermission(); 1941 1942 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1943 (met ? ENABLED : DISABLED), networkType)); 1944 } 1945 1946 private void handleSetDependencyMet(int networkType, boolean met) { 1947 if (mNetTrackers[networkType] != null) { 1948 if (DBG) { 1949 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1950 } 1951 mNetTrackers[networkType].setDependencyMet(met); 1952 } 1953 } 1954 1955 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1956 @Override 1957 public void onUidRulesChanged(int uid, int uidRules) { 1958 // caller is NPMS, since we only register with them 1959 if (LOGD_RULES) { 1960 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1961 } 1962 1963 synchronized (mRulesLock) { 1964 // skip update when we've already applied rules 1965 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1966 if (oldRules == uidRules) return; 1967 1968 mUidRules.put(uid, uidRules); 1969 } 1970 1971 // TODO: notify UID when it has requested targeted updates 1972 } 1973 1974 @Override 1975 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1976 // caller is NPMS, since we only register with them 1977 if (LOGD_RULES) { 1978 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1979 } 1980 1981 synchronized (mRulesLock) { 1982 mMeteredIfaces.clear(); 1983 for (String iface : meteredIfaces) { 1984 mMeteredIfaces.add(iface); 1985 } 1986 } 1987 } 1988 1989 @Override 1990 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1991 // caller is NPMS, since we only register with them 1992 if (LOGD_RULES) { 1993 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1994 } 1995 1996 // kick off connectivity change broadcast for active network, since 1997 // global background policy change is radical. 1998 final int networkType = mActiveDefaultNetwork; 1999 if (isNetworkTypeValid(networkType)) { 2000 final NetworkStateTracker tracker = mNetTrackers[networkType]; 2001 if (tracker != null) { 2002 final NetworkInfo info = tracker.getNetworkInfo(); 2003 if (info != null && info.isConnected()) { 2004 sendConnectedBroadcast(info); 2005 } 2006 } 2007 } 2008 } 2009 }; 2010 2011 @Override 2012 public void setPolicyDataEnable(int networkType, boolean enabled) { 2013 // only someone like NPMS should only be calling us 2014 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 2015 2016 mHandler.sendMessage(mHandler.obtainMessage( 2017 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 2018 } 2019 2020 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 2021 // TODO - handle this passing to factories 2022// if (isNetworkTypeValid(networkType)) { 2023// final NetworkStateTracker tracker = mNetTrackers[networkType]; 2024// if (tracker != null) { 2025// tracker.setPolicyDataEnable(enabled); 2026// } 2027// } 2028 } 2029 2030 private void enforceAccessPermission() { 2031 mContext.enforceCallingOrSelfPermission( 2032 android.Manifest.permission.ACCESS_NETWORK_STATE, 2033 "ConnectivityService"); 2034 } 2035 2036 private void enforceChangePermission() { 2037 mContext.enforceCallingOrSelfPermission( 2038 android.Manifest.permission.CHANGE_NETWORK_STATE, 2039 "ConnectivityService"); 2040 } 2041 2042 // TODO Make this a special check when it goes public 2043 private void enforceTetherChangePermission() { 2044 mContext.enforceCallingOrSelfPermission( 2045 android.Manifest.permission.CHANGE_NETWORK_STATE, 2046 "ConnectivityService"); 2047 } 2048 2049 private void enforceTetherAccessPermission() { 2050 mContext.enforceCallingOrSelfPermission( 2051 android.Manifest.permission.ACCESS_NETWORK_STATE, 2052 "ConnectivityService"); 2053 } 2054 2055 private void enforceConnectivityInternalPermission() { 2056 mContext.enforceCallingOrSelfPermission( 2057 android.Manifest.permission.CONNECTIVITY_INTERNAL, 2058 "ConnectivityService"); 2059 } 2060 2061 private void enforceMarkNetworkSocketPermission() { 2062 //Media server special case 2063 if (Binder.getCallingUid() == Process.MEDIA_UID) { 2064 return; 2065 } 2066 mContext.enforceCallingOrSelfPermission( 2067 android.Manifest.permission.MARK_NETWORK_SOCKET, 2068 "ConnectivityService"); 2069 } 2070 2071 /** 2072 * Handle a {@code DISCONNECTED} event. If this pertains to the non-active 2073 * network, we ignore it. If it is for the active network, we send out a 2074 * broadcast. But first, we check whether it might be possible to connect 2075 * to a different network. 2076 * @param info the {@code NetworkInfo} for the network 2077 */ 2078 private void handleDisconnect(NetworkInfo info) { 2079 2080 int prevNetType = info.getType(); 2081 2082 mNetTrackers[prevNetType].setTeardownRequested(false); 2083 int thisNetId = mNetTrackers[prevNetType].getNetwork().netId; 2084 2085 // Remove idletimer previously setup in {@code handleConnect} 2086// Already in place in new function. This is dead code. 2087// if (mNetConfigs[prevNetType].isDefault()) { 2088// removeDataActivityTracking(prevNetType); 2089// } 2090 2091 /* 2092 * If the disconnected network is not the active one, then don't report 2093 * this as a loss of connectivity. What probably happened is that we're 2094 * getting the disconnect for a network that we explicitly disabled 2095 * in accordance with network preference policies. 2096 */ 2097 if (!mNetConfigs[prevNetType].isDefault()) { 2098 List<Integer> pids = mNetRequestersPids[prevNetType]; 2099 for (Integer pid : pids) { 2100 // will remove them because the net's no longer connected 2101 // need to do this now as only now do we know the pids and 2102 // can properly null things that are no longer referenced. 2103 reassessPidDns(pid.intValue(), false); 2104 } 2105 } 2106 2107 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 2108 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2109 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2110 if (info.isFailover()) { 2111 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2112 info.setFailover(false); 2113 } 2114 if (info.getReason() != null) { 2115 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2116 } 2117 if (info.getExtraInfo() != null) { 2118 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2119 info.getExtraInfo()); 2120 } 2121 2122 if (mNetConfigs[prevNetType].isDefault()) { 2123 tryFailover(prevNetType); 2124 if (mActiveDefaultNetwork != -1) { 2125 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2126 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 2127 } else { 2128 mDefaultInetConditionPublished = 0; // we're not connected anymore 2129 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2130 } 2131 } 2132 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2133 2134 // Reset interface if no other connections are using the same interface 2135 boolean doReset = true; 2136 LinkProperties linkProperties = mNetTrackers[prevNetType].getLinkProperties(); 2137 if (linkProperties != null) { 2138 String oldIface = linkProperties.getInterfaceName(); 2139 if (TextUtils.isEmpty(oldIface) == false) { 2140 for (NetworkStateTracker networkStateTracker : mNetTrackers) { 2141 if (networkStateTracker == null) continue; 2142 NetworkInfo networkInfo = networkStateTracker.getNetworkInfo(); 2143 if (networkInfo.isConnected() && networkInfo.getType() != prevNetType) { 2144 LinkProperties l = networkStateTracker.getLinkProperties(); 2145 if (l == null) continue; 2146 if (oldIface.equals(l.getInterfaceName())) { 2147 doReset = false; 2148 break; 2149 } 2150 } 2151 } 2152 } 2153 } 2154 2155 // do this before we broadcast the change 2156// Already done in new function. This is dead code. 2157// handleConnectivityChange(prevNetType, doReset); 2158 2159 final Intent immediateIntent = new Intent(intent); 2160 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 2161 sendStickyBroadcast(immediateIntent); 2162 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 2163 /* 2164 * If the failover network is already connected, then immediately send 2165 * out a followup broadcast indicating successful failover 2166 */ 2167 if (mActiveDefaultNetwork != -1) { 2168 sendConnectedBroadcastDelayed(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(), 2169 getConnectivityChangeDelay()); 2170 } 2171 try { 2172// mNetd.removeNetwork(thisNetId); 2173 } catch (Exception e) { 2174 loge("Exception removing network: " + e); 2175 } finally { 2176 mNetTrackers[prevNetType].setNetId(INVALID_NET_ID); 2177 } 2178 } 2179 2180 private void tryFailover(int prevNetType) { 2181 /* 2182 * If this is a default network, check if other defaults are available. 2183 * Try to reconnect on all available and let them hash it out when 2184 * more than one connects. 2185 */ 2186 if (mNetConfigs[prevNetType].isDefault()) { 2187 if (mActiveDefaultNetwork == prevNetType) { 2188 if (DBG) { 2189 log("tryFailover: set mActiveDefaultNetwork=-1, prevNetType=" + prevNetType); 2190 } 2191 mActiveDefaultNetwork = -1; 2192 try { 2193 mNetd.clearDefaultNetId(); 2194 } catch (Exception e) { 2195 loge("Exception clearing default network :" + e); 2196 } 2197 } 2198 2199 // don't signal a reconnect for anything lower or equal priority than our 2200 // current connected default 2201 // TODO - don't filter by priority now - nice optimization but risky 2202// int currentPriority = -1; 2203// if (mActiveDefaultNetwork != -1) { 2204// currentPriority = mNetConfigs[mActiveDefaultNetwork].mPriority; 2205// } 2206 2207 for (int checkType=0; checkType <= ConnectivityManager.MAX_NETWORK_TYPE; checkType++) { 2208 if (checkType == prevNetType) continue; 2209 if (mNetConfigs[checkType] == null) continue; 2210 if (!mNetConfigs[checkType].isDefault()) continue; 2211 if (mNetTrackers[checkType] == null) continue; 2212 2213// Enabling the isAvailable() optimization caused mobile to not get 2214// selected if it was in the middle of error handling. Specifically 2215// a moble connection that took 30 seconds to complete the DEACTIVATE_DATA_CALL 2216// would not be available and we wouldn't get connected to anything. 2217// So removing the isAvailable() optimization below for now. TODO: This 2218// optimization should work and we need to investigate why it doesn't work. 2219// This could be related to how DEACTIVATE_DATA_CALL is reporting its 2220// complete before it is really complete. 2221 2222// if (!mNetTrackers[checkType].isAvailable()) continue; 2223 2224// if (currentPriority >= mNetConfigs[checkType].mPriority) continue; 2225 2226 NetworkStateTracker checkTracker = mNetTrackers[checkType]; 2227 NetworkInfo checkInfo = checkTracker.getNetworkInfo(); 2228 if (!checkInfo.isConnectedOrConnecting() || checkTracker.isTeardownRequested()) { 2229 checkInfo.setFailover(true); 2230 checkTracker.reconnect(); 2231 } 2232 if (DBG) log("Attempting to switch to " + checkInfo.getTypeName()); 2233 } 2234 } 2235 } 2236 2237 public void sendConnectedBroadcast(NetworkInfo info) { 2238 enforceConnectivityInternalPermission(); 2239 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2240 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 2241 } 2242 2243 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 2244 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2245 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 2246 } 2247 2248 private void sendInetConditionBroadcast(NetworkInfo info) { 2249 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 2250 } 2251 2252 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 2253 if (mLockdownTracker != null) { 2254 info = mLockdownTracker.augmentNetworkInfo(info); 2255 } 2256 2257 Intent intent = new Intent(bcastType); 2258 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2259 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2260 if (info.isFailover()) { 2261 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2262 info.setFailover(false); 2263 } 2264 if (info.getReason() != null) { 2265 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2266 } 2267 if (info.getExtraInfo() != null) { 2268 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2269 info.getExtraInfo()); 2270 } 2271 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2272 return intent; 2273 } 2274 2275 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 2276 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 2277 } 2278 2279 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 2280 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 2281 } 2282 2283 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 2284 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 2285 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 2286 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 2287 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 2288 final long ident = Binder.clearCallingIdentity(); 2289 try { 2290 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 2291 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 2292 } finally { 2293 Binder.restoreCallingIdentity(ident); 2294 } 2295 } 2296 2297 private void sendStickyBroadcast(Intent intent) { 2298 synchronized(this) { 2299 if (!mSystemReady) { 2300 mInitialBroadcast = new Intent(intent); 2301 } 2302 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2303 if (VDBG) { 2304 log("sendStickyBroadcast: action=" + intent.getAction()); 2305 } 2306 2307 final long ident = Binder.clearCallingIdentity(); 2308 try { 2309 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2310 } finally { 2311 Binder.restoreCallingIdentity(ident); 2312 } 2313 } 2314 } 2315 2316 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 2317 if (delayMs <= 0) { 2318 sendStickyBroadcast(intent); 2319 } else { 2320 if (VDBG) { 2321 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 2322 + intent.getAction()); 2323 } 2324 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2325 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 2326 } 2327 } 2328 2329 void systemReady() { 2330 mCaptivePortalTracker = CaptivePortalTracker.makeCaptivePortalTracker(mContext, this); 2331 loadGlobalProxy(); 2332 2333 synchronized(this) { 2334 mSystemReady = true; 2335 if (mInitialBroadcast != null) { 2336 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 2337 mInitialBroadcast = null; 2338 } 2339 } 2340 // load the global proxy at startup 2341 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 2342 2343 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 2344 // for user to unlock device. 2345 if (!updateLockdownVpn()) { 2346 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 2347 mContext.registerReceiver(mUserPresentReceiver, filter); 2348 } 2349 } 2350 2351 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 2352 @Override 2353 public void onReceive(Context context, Intent intent) { 2354 // Try creating lockdown tracker, since user present usually means 2355 // unlocked keystore. 2356 if (updateLockdownVpn()) { 2357 mContext.unregisterReceiver(this); 2358 } 2359 } 2360 }; 2361 2362 private boolean isNewNetTypePreferredOverCurrentNetType(int type) { 2363 if (((type != mNetworkPreference) 2364 && (mNetConfigs[mActiveDefaultNetwork].priority > mNetConfigs[type].priority)) 2365 || (mNetworkPreference == mActiveDefaultNetwork)) { 2366 return false; 2367 } 2368 return true; 2369 } 2370 2371 private void handleConnect(NetworkInfo info) { 2372 final int newNetType = info.getType(); 2373 2374 // snapshot isFailover, because sendConnectedBroadcast() resets it 2375 boolean isFailover = info.isFailover(); 2376 final NetworkStateTracker thisNet = mNetTrackers[newNetType]; 2377 final String thisIface = thisNet.getLinkProperties().getInterfaceName(); 2378 2379 if (VDBG) { 2380 log("handleConnect: E newNetType=" + newNetType + " thisIface=" + thisIface 2381 + " isFailover" + isFailover); 2382 } 2383 2384 // if this is a default net and other default is running 2385 // kill the one not preferred 2386 if (mNetConfigs[newNetType].isDefault()) { 2387 if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != newNetType) { 2388 if (isNewNetTypePreferredOverCurrentNetType(newNetType)) { 2389 String teardownPolicy = SystemProperties.get("net.teardownPolicy"); 2390 if (TextUtils.equals(teardownPolicy, "keep") == false) { 2391 // tear down the other 2392 NetworkStateTracker otherNet = 2393 mNetTrackers[mActiveDefaultNetwork]; 2394 if (DBG) { 2395 log("Policy requires " + otherNet.getNetworkInfo().getTypeName() + 2396 " teardown"); 2397 } 2398 if (!teardown(otherNet)) { 2399 loge("Network declined teardown request"); 2400 teardown(thisNet); 2401 return; 2402 } 2403 } else { 2404 //TODO - remove 2405 loge("network teardown skipped due to net.teardownPolicy setting"); 2406 } 2407 } else { 2408 // don't accept this one 2409 if (VDBG) { 2410 log("Not broadcasting CONNECT_ACTION " + 2411 "to torn down network " + info.getTypeName()); 2412 } 2413 teardown(thisNet); 2414 return; 2415 } 2416 } 2417 int thisNetId = nextNetId(); 2418 thisNet.setNetId(thisNetId); 2419 try { 2420// mNetd.createNetwork(thisNetId, thisIface); 2421 } catch (Exception e) { 2422 loge("Exception creating network :" + e); 2423 teardown(thisNet); 2424 return; 2425 } 2426// Already in place in new function. This is dead code. 2427// setupDataActivityTracking(newNetType); 2428 synchronized (ConnectivityService.this) { 2429 // have a new default network, release the transition wakelock in a second 2430 // if it's held. The second pause is to allow apps to reconnect over the 2431 // new network 2432 if (mNetTransitionWakeLock.isHeld()) { 2433 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2434 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 2435 mNetTransitionWakeLockSerialNumber, 0), 2436 1000); 2437 } 2438 } 2439 mActiveDefaultNetwork = newNetType; 2440 try { 2441 mNetd.setDefaultNetId(thisNetId); 2442 } catch (Exception e) { 2443 loge("Exception setting default network :" + e); 2444 } 2445 // this will cause us to come up initially as unconnected and switching 2446 // to connected after our normal pause unless somebody reports us as reall 2447 // disconnected 2448 mDefaultInetConditionPublished = 0; 2449 mDefaultConnectionSequence++; 2450 mInetConditionChangeInFlight = false; 2451 // Don't do this - if we never sign in stay, grey 2452 //reportNetworkCondition(mActiveDefaultNetwork, 100); 2453 updateNetworkSettings(thisNet); 2454 } else { 2455 int thisNetId = nextNetId(); 2456 thisNet.setNetId(thisNetId); 2457 try { 2458// mNetd.createNetwork(thisNetId, thisIface); 2459 } catch (Exception e) { 2460 loge("Exception creating network :" + e); 2461 teardown(thisNet); 2462 return; 2463 } 2464 } 2465 thisNet.setTeardownRequested(false); 2466// Already in place in new function. This is dead code. 2467// updateMtuSizeSettings(thisNet); 2468// handleConnectivityChange(newNetType, false); 2469 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 2470 2471 // notify battery stats service about this network 2472 if (thisIface != null) { 2473 try { 2474 BatteryStatsService.getService().noteNetworkInterfaceType(thisIface, newNetType); 2475 } catch (RemoteException e) { 2476 // ignored; service lives in system_server 2477 } 2478 } 2479 } 2480 2481 /** @hide */ 2482 @Override 2483 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 2484 enforceConnectivityInternalPermission(); 2485 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 2486// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 2487 } 2488 2489 /** 2490 * Setup data activity tracking for the given network. 2491 * 2492 * Every {@code setupDataActivityTracking} should be paired with a 2493 * {@link #removeDataActivityTracking} for cleanup. 2494 */ 2495 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 2496 final String iface = networkAgent.linkProperties.getInterfaceName(); 2497 2498 final int timeout; 2499 int type = ConnectivityManager.TYPE_NONE; 2500 2501 if (networkAgent.networkCapabilities.hasTransport( 2502 NetworkCapabilities.TRANSPORT_CELLULAR)) { 2503 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2504 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 2505 5); 2506 type = ConnectivityManager.TYPE_MOBILE; 2507 } else if (networkAgent.networkCapabilities.hasTransport( 2508 NetworkCapabilities.TRANSPORT_WIFI)) { 2509 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2510 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 2511 0); 2512 type = ConnectivityManager.TYPE_WIFI; 2513 } else { 2514 // do not track any other networks 2515 timeout = 0; 2516 } 2517 2518 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 2519 try { 2520 mNetd.addIdleTimer(iface, timeout, type); 2521 } catch (Exception e) { 2522 // You shall not crash! 2523 loge("Exception in setupDataActivityTracking " + e); 2524 } 2525 } 2526 } 2527 2528 /** 2529 * Remove data activity tracking when network disconnects. 2530 */ 2531 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 2532 final String iface = networkAgent.linkProperties.getInterfaceName(); 2533 final NetworkCapabilities caps = networkAgent.networkCapabilities; 2534 2535 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 2536 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 2537 try { 2538 // the call fails silently if no idletimer setup for this interface 2539 mNetd.removeIdleTimer(iface); 2540 } catch (Exception e) { 2541 loge("Exception in removeDataActivityTracking " + e); 2542 } 2543 } 2544 } 2545 2546 /** 2547 * After a change in the connectivity state of a network. We're mainly 2548 * concerned with making sure that the list of DNS servers is set up 2549 * according to which networks are connected, and ensuring that the 2550 * right routing table entries exist. 2551 * 2552 * TODO - delete when we're sure all this functionallity is captured. 2553 */ 2554 private void handleConnectivityChange(int netType, LinkProperties curLp, boolean doReset) { 2555 int resetMask = doReset ? NetworkUtils.RESET_ALL_ADDRESSES : 0; 2556 boolean exempt = ConnectivityManager.isNetworkTypeExempt(netType); 2557 if (VDBG) { 2558 log("handleConnectivityChange: netType=" + netType + " doReset=" + doReset 2559 + " resetMask=" + resetMask); 2560 } 2561 2562 /* 2563 * If a non-default network is enabled, add the host routes that 2564 * will allow it's DNS servers to be accessed. 2565 */ 2566 handleDnsConfigurationChange(netType); 2567 2568 LinkProperties newLp = null; 2569 2570 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2571 newLp = mNetTrackers[netType].getLinkProperties(); 2572 if (VDBG) { 2573 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2574 " doReset=" + doReset + " resetMask=" + resetMask + 2575 "\n curLp=" + curLp + 2576 "\n newLp=" + newLp); 2577 } 2578 2579 if (curLp != null) { 2580 if (curLp.isIdenticalInterfaceName(newLp)) { 2581 CompareResult<LinkAddress> car = curLp.compareAddresses(newLp); 2582 if ((car.removed.size() != 0) || (car.added.size() != 0)) { 2583 for (LinkAddress linkAddr : car.removed) { 2584 if (linkAddr.getAddress() instanceof Inet4Address) { 2585 resetMask |= NetworkUtils.RESET_IPV4_ADDRESSES; 2586 } 2587 if (linkAddr.getAddress() instanceof Inet6Address) { 2588 resetMask |= NetworkUtils.RESET_IPV6_ADDRESSES; 2589 } 2590 } 2591 if (DBG) { 2592 log("handleConnectivityChange: addresses changed" + 2593 " linkProperty[" + netType + "]:" + " resetMask=" + resetMask + 2594 "\n car=" + car); 2595 } 2596 } else { 2597 if (VDBG) { 2598 log("handleConnectivityChange: addresses are the same reset per" + 2599 " doReset linkProperty[" + netType + "]:" + 2600 " resetMask=" + resetMask); 2601 } 2602 } 2603 } else { 2604 resetMask = NetworkUtils.RESET_ALL_ADDRESSES; 2605 if (DBG) { 2606 log("handleConnectivityChange: interface not not equivalent reset both" + 2607 " linkProperty[" + netType + "]:" + 2608 " resetMask=" + resetMask); 2609 } 2610 } 2611 } 2612 if (mNetConfigs[netType].isDefault()) { 2613 handleApplyDefaultProxy(newLp.getHttpProxy()); 2614 } 2615 } else { 2616 if (VDBG) { 2617 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2618 " doReset=" + doReset + " resetMask=" + resetMask + 2619 "\n curLp=" + curLp + 2620 "\n newLp= null"); 2621 } 2622 } 2623 mCurrentLinkProperties[netType] = newLp; 2624 boolean resetDns = updateRoutes(newLp, curLp, mNetConfigs[netType].isDefault(), exempt, 2625 mNetTrackers[netType].getNetwork().netId); 2626 2627 if (resetMask != 0 || resetDns) { 2628 if (VDBG) log("handleConnectivityChange: resetting"); 2629 if (curLp != null) { 2630 if (VDBG) log("handleConnectivityChange: resetting curLp=" + curLp); 2631 for (String iface : curLp.getAllInterfaceNames()) { 2632 if (TextUtils.isEmpty(iface) == false) { 2633 if (resetMask != 0) { 2634 if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")"); 2635 NetworkUtils.resetConnections(iface, resetMask); 2636 2637 // Tell VPN the interface is down. It is a temporary 2638 // but effective fix to make VPN aware of the change. 2639 if ((resetMask & NetworkUtils.RESET_IPV4_ADDRESSES) != 0) { 2640 synchronized(mVpns) { 2641 for (int i = 0; i < mVpns.size(); i++) { 2642 mVpns.valueAt(i).interfaceStatusChanged(iface, false); 2643 } 2644 } 2645 } 2646 } 2647 } else { 2648 loge("Can't reset connection for type "+netType); 2649 } 2650 } 2651 if (resetDns) { 2652 flushVmDnsCache(); 2653 if (VDBG) log("resetting DNS cache for type " + netType); 2654 try { 2655 mNetd.flushNetworkDnsCache(mNetTrackers[netType].getNetwork().netId); 2656 } catch (Exception e) { 2657 // never crash - catch them all 2658 if (DBG) loge("Exception resetting dns cache: " + e); 2659 } 2660 } 2661 } 2662 } 2663 2664 // TODO: Temporary notifying upstread change to Tethering. 2665 // @see bug/4455071 2666 /** Notify TetheringService if interface name has been changed. */ 2667 if (TextUtils.equals(mNetTrackers[netType].getNetworkInfo().getReason(), 2668 PhoneConstants.REASON_LINK_PROPERTIES_CHANGED)) { 2669 if (isTetheringSupported()) { 2670 mTethering.handleTetherIfaceChange(); 2671 } 2672 } 2673 } 2674 2675 /** 2676 * Add and remove routes using the old properties (null if not previously connected), 2677 * new properties (null if becoming disconnected). May even be double null, which 2678 * is a noop. 2679 * Uses isLinkDefault to determine if default routes should be set or conversely if 2680 * host routes should be set to the dns servers 2681 * returns a boolean indicating the routes changed 2682 */ 2683 private boolean updateRoutes(LinkProperties newLp, LinkProperties curLp, 2684 boolean isLinkDefault, boolean exempt, int netId) { 2685 Collection<RouteInfo> routesToAdd = null; 2686 CompareResult<InetAddress> dnsDiff = new CompareResult<InetAddress>(); 2687 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 2688 if (curLp != null) { 2689 // check for the delta between the current set and the new 2690 routeDiff = curLp.compareAllRoutes(newLp); 2691 dnsDiff = curLp.compareDnses(newLp); 2692 } else if (newLp != null) { 2693 routeDiff.added = newLp.getAllRoutes(); 2694 dnsDiff.added = newLp.getDnsServers(); 2695 } 2696 2697 boolean routesChanged = (routeDiff.removed.size() != 0 || routeDiff.added.size() != 0); 2698 2699 for (RouteInfo r : routeDiff.removed) { 2700 if (isLinkDefault || ! r.isDefaultRoute()) { 2701 if (VDBG) log("updateRoutes: default remove route r=" + r); 2702 removeRoute(curLp, r, TO_DEFAULT_TABLE, netId); 2703 } 2704 if (isLinkDefault == false) { 2705 // remove from a secondary route table 2706 removeRoute(curLp, r, TO_SECONDARY_TABLE, netId); 2707 } 2708 } 2709 2710 for (RouteInfo r : routeDiff.added) { 2711 if (isLinkDefault || ! r.isDefaultRoute()) { 2712 addRoute(newLp, r, TO_DEFAULT_TABLE, exempt, netId); 2713 } else { 2714 // add to a secondary route table 2715 addRoute(newLp, r, TO_SECONDARY_TABLE, UNEXEMPT, netId); 2716 2717 // many radios add a default route even when we don't want one. 2718 // remove the default route unless somebody else has asked for it 2719 String ifaceName = newLp.getInterfaceName(); 2720 synchronized (mRoutesLock) { 2721 if (!TextUtils.isEmpty(ifaceName) && !mAddedRoutes.contains(r)) { 2722 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 2723 try { 2724 mNetd.removeRoute(netId, r); 2725 } catch (Exception e) { 2726 // never crash - catch them all 2727 if (DBG) loge("Exception trying to remove a route: " + e); 2728 } 2729 } 2730 } 2731 } 2732 } 2733 2734 return routesChanged; 2735 } 2736 2737 /** 2738 * Reads the network specific MTU size from reources. 2739 * and set it on it's iface. 2740 */ 2741 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 2742 final String iface = newLp.getInterfaceName(); 2743 final int mtu = newLp.getMtu(); 2744 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 2745 if (VDBG) log("identical MTU - not setting"); 2746 return; 2747 } 2748 2749 if (mtu < 68 || mtu > 10000) { 2750 loge("Unexpected mtu value: " + mtu + ", " + iface); 2751 return; 2752 } 2753 2754 try { 2755 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 2756 mNetd.setMtu(iface, mtu); 2757 } catch (Exception e) { 2758 Slog.e(TAG, "exception in setMtu()" + e); 2759 } 2760 } 2761 2762 /** 2763 * Reads the network specific TCP buffer sizes from SystemProperties 2764 * net.tcp.buffersize.[default|wifi|umts|edge|gprs] and set them for system 2765 * wide use 2766 */ 2767 private void updateNetworkSettings(NetworkStateTracker nt) { 2768 String key = nt.getTcpBufferSizesPropName(); 2769 String bufferSizes = key == null ? null : SystemProperties.get(key); 2770 2771 if (TextUtils.isEmpty(bufferSizes)) { 2772 if (VDBG) log(key + " not found in system properties. Using defaults"); 2773 2774 // Setting to default values so we won't be stuck to previous values 2775 key = "net.tcp.buffersize.default"; 2776 bufferSizes = SystemProperties.get(key); 2777 } 2778 2779 // Set values in kernel 2780 if (bufferSizes.length() != 0) { 2781 if (VDBG) { 2782 log("Setting TCP values: [" + bufferSizes 2783 + "] which comes from [" + key + "]"); 2784 } 2785 setBufferSize(bufferSizes); 2786 } 2787 2788 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 2789 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 2790 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 2791 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 2792 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 2793 if (rwndValue != 0) { 2794 SystemProperties.set(sysctlKey, rwndValue.toString()); 2795 } 2796 } 2797 2798 /** 2799 * Writes TCP buffer sizes to /sys/kernel/ipv4/tcp_[r/w]mem_[min/def/max] 2800 * which maps to /proc/sys/net/ipv4/tcp_rmem and tcpwmem 2801 * 2802 * @param bufferSizes in the format of "readMin, readInitial, readMax, 2803 * writeMin, writeInitial, writeMax" 2804 */ 2805 private void setBufferSize(String bufferSizes) { 2806 try { 2807 String[] values = bufferSizes.split(","); 2808 2809 if (values.length == 6) { 2810 final String prefix = "/sys/kernel/ipv4/tcp_"; 2811 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 2812 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 2813 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 2814 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 2815 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 2816 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 2817 } else { 2818 loge("Invalid buffersize string: " + bufferSizes); 2819 } 2820 } catch (IOException e) { 2821 loge("Can't set tcp buffer sizes:" + e); 2822 } 2823 } 2824 2825 /** 2826 * Adjust the per-process dns entries (net.dns<x>.<pid>) based 2827 * on the highest priority active net which this process requested. 2828 * If there aren't any, clear it out 2829 */ 2830 private void reassessPidDns(int pid, boolean doBump) 2831 { 2832 if (VDBG) log("reassessPidDns for pid " + pid); 2833 Integer myPid = new Integer(pid); 2834 for(int i : mPriorityList) { 2835 if (mNetConfigs[i].isDefault()) { 2836 continue; 2837 } 2838 NetworkStateTracker nt = mNetTrackers[i]; 2839 if (nt.getNetworkInfo().isConnected() && 2840 !nt.isTeardownRequested()) { 2841 LinkProperties p = nt.getLinkProperties(); 2842 if (p == null) continue; 2843 if (mNetRequestersPids[i].contains(myPid)) { 2844 try { 2845 // TODO: Reimplement this via local variable in bionic. 2846 // mNetd.setDnsNetworkForPid(nt.getNetwork().netId, pid); 2847 } catch (Exception e) { 2848 Slog.e(TAG, "exception reasseses pid dns: " + e); 2849 } 2850 return; 2851 } 2852 } 2853 } 2854 // nothing found - delete 2855 try { 2856 // TODO: Reimplement this via local variable in bionic. 2857 // mNetd.clearDnsNetworkForPid(pid); 2858 } catch (Exception e) { 2859 Slog.e(TAG, "exception clear interface from pid: " + e); 2860 } 2861 } 2862 2863 private void flushVmDnsCache() { 2864 /* 2865 * Tell the VMs to toss their DNS caches 2866 */ 2867 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 2868 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 2869 /* 2870 * Connectivity events can happen before boot has completed ... 2871 */ 2872 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2873 final long ident = Binder.clearCallingIdentity(); 2874 try { 2875 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 2876 } finally { 2877 Binder.restoreCallingIdentity(ident); 2878 } 2879 } 2880 2881 // Caller must grab mDnsLock. 2882 private void updateDnsLocked(String network, int netId, 2883 Collection<InetAddress> dnses, String domains) { 2884 int last = 0; 2885 if (dnses.size() == 0 && mDefaultDns != null) { 2886 dnses = new ArrayList(); 2887 dnses.add(mDefaultDns); 2888 if (DBG) { 2889 loge("no dns provided for " + network + " - using " + mDefaultDns.getHostAddress()); 2890 } 2891 } 2892 2893 try { 2894 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), domains); 2895 2896 for (InetAddress dns : dnses) { 2897 ++last; 2898 String key = "net.dns" + last; 2899 String value = dns.getHostAddress(); 2900 SystemProperties.set(key, value); 2901 } 2902 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 2903 String key = "net.dns" + i; 2904 SystemProperties.set(key, ""); 2905 } 2906 mNumDnsEntries = last; 2907 } catch (Exception e) { 2908 loge("exception setting default dns interface: " + e); 2909 } 2910 } 2911 2912 private void handleDnsConfigurationChange(int netType) { 2913 // add default net's dns entries 2914 NetworkStateTracker nt = mNetTrackers[netType]; 2915 if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) { 2916 LinkProperties p = nt.getLinkProperties(); 2917 if (p == null) return; 2918 Collection<InetAddress> dnses = p.getDnsServers(); 2919 int netId = nt.getNetwork().netId; 2920 if (mNetConfigs[netType].isDefault()) { 2921 String network = nt.getNetworkInfo().getTypeName(); 2922 synchronized (mDnsLock) { 2923 updateDnsLocked(network, netId, dnses, p.getDomains()); 2924 } 2925 } else { 2926 try { 2927 mNetd.setDnsServersForNetwork(netId, 2928 NetworkUtils.makeStrings(dnses), p.getDomains()); 2929 } catch (Exception e) { 2930 if (DBG) loge("exception setting dns servers: " + e); 2931 } 2932 // set per-pid dns for attached secondary nets 2933 List<Integer> pids = mNetRequestersPids[netType]; 2934 for (Integer pid : pids) { 2935 try { 2936 // TODO: Reimplement this via local variable in bionic. 2937 // mNetd.setDnsNetworkForPid(netId, pid); 2938 } catch (Exception e) { 2939 Slog.e(TAG, "exception setting interface for pid: " + e); 2940 } 2941 } 2942 } 2943 flushVmDnsCache(); 2944 } 2945 } 2946 2947 @Override 2948 public int getRestoreDefaultNetworkDelay(int networkType) { 2949 String restoreDefaultNetworkDelayStr = SystemProperties.get( 2950 NETWORK_RESTORE_DELAY_PROP_NAME); 2951 if(restoreDefaultNetworkDelayStr != null && 2952 restoreDefaultNetworkDelayStr.length() != 0) { 2953 try { 2954 return Integer.valueOf(restoreDefaultNetworkDelayStr); 2955 } catch (NumberFormatException e) { 2956 } 2957 } 2958 // if the system property isn't set, use the value for the apn type 2959 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 2960 2961 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 2962 (mNetConfigs[networkType] != null)) { 2963 ret = mNetConfigs[networkType].restoreTime; 2964 } 2965 return ret; 2966 } 2967 2968 @Override 2969 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 2970 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 2971 if (mContext.checkCallingOrSelfPermission( 2972 android.Manifest.permission.DUMP) 2973 != PackageManager.PERMISSION_GRANTED) { 2974 pw.println("Permission Denial: can't dump ConnectivityService " + 2975 "from from pid=" + Binder.getCallingPid() + ", uid=" + 2976 Binder.getCallingUid()); 2977 return; 2978 } 2979 2980 pw.println("NetworkFactories for:"); 2981 pw.increaseIndent(); 2982 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2983 pw.println(nfi.name); 2984 } 2985 pw.decreaseIndent(); 2986 pw.println(); 2987 2988 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 2989 pw.print("Active default network: "); 2990 if (defaultNai == null) { 2991 pw.println("none"); 2992 } else { 2993 pw.println(defaultNai.network.netId); 2994 } 2995 pw.println(); 2996 2997 pw.println("Current Networks:"); 2998 pw.increaseIndent(); 2999 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 3000 pw.println(nai.toString()); 3001 pw.increaseIndent(); 3002 pw.println("Requests:"); 3003 pw.increaseIndent(); 3004 for (int i = 0; i < nai.networkRequests.size(); i++) { 3005 pw.println(nai.networkRequests.valueAt(i).toString()); 3006 } 3007 pw.decreaseIndent(); 3008 pw.println("Lingered:"); 3009 pw.increaseIndent(); 3010 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 3011 pw.decreaseIndent(); 3012 pw.decreaseIndent(); 3013 } 3014 pw.decreaseIndent(); 3015 pw.println(); 3016 3017 pw.println("Network Requests:"); 3018 pw.increaseIndent(); 3019 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3020 pw.println(nri.toString()); 3021 } 3022 pw.println(); 3023 pw.decreaseIndent(); 3024 3025 synchronized (this) { 3026 pw.println("NetworkTranstionWakeLock is currently " + 3027 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 3028 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 3029 } 3030 pw.println(); 3031 3032 mTethering.dump(fd, pw, args); 3033 3034 if (mInetLog != null) { 3035 pw.println(); 3036 pw.println("Inet condition reports:"); 3037 pw.increaseIndent(); 3038 for(int i = 0; i < mInetLog.size(); i++) { 3039 pw.println(mInetLog.get(i)); 3040 } 3041 pw.decreaseIndent(); 3042 } 3043 } 3044 3045 // must be stateless - things change under us. 3046 private class NetworkStateTrackerHandler extends Handler { 3047 public NetworkStateTrackerHandler(Looper looper) { 3048 super(looper); 3049 } 3050 3051 @Override 3052 public void handleMessage(Message msg) { 3053 NetworkInfo info; 3054 switch (msg.what) { 3055 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 3056 handleAsyncChannelHalfConnect(msg); 3057 break; 3058 } 3059 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 3060 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3061 if (nai != null) nai.asyncChannel.disconnect(); 3062 break; 3063 } 3064 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 3065 handleAsyncChannelDisconnected(msg); 3066 break; 3067 } 3068 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 3069 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3070 if (nai == null) { 3071 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 3072 } else { 3073 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 3074 } 3075 break; 3076 } 3077 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 3078 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3079 if (nai == null) { 3080 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 3081 } else { 3082 if (VDBG) log("Update of Linkproperties for " + nai.name()); 3083 LinkProperties oldLp = nai.linkProperties; 3084 nai.linkProperties = (LinkProperties)msg.obj; 3085 updateLinkProperties(nai, oldLp); 3086 } 3087 break; 3088 } 3089 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 3090 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3091 if (nai == null) { 3092 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 3093 break; 3094 } 3095 info = (NetworkInfo) msg.obj; 3096 updateNetworkInfo(nai, info); 3097 break; 3098 } 3099 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 3100 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3101 if (nai == null) { 3102 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 3103 break; 3104 } 3105 Integer score = (Integer) msg.obj; 3106 if (score != null) updateNetworkScore(nai, score.intValue()); 3107 break; 3108 } 3109 case NetworkMonitor.EVENT_NETWORK_VALIDATED: { 3110 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 3111 handleConnectionValidated(nai); 3112 break; 3113 } 3114 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 3115 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 3116 handleLingerComplete(nai); 3117 break; 3118 } 3119 case NetworkStateTracker.EVENT_STATE_CHANGED: { 3120 info = (NetworkInfo) msg.obj; 3121 NetworkInfo.State state = info.getState(); 3122 3123 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 3124 (state == NetworkInfo.State.DISCONNECTED) || 3125 (state == NetworkInfo.State.SUSPENDED)) { 3126 log("ConnectivityChange for " + 3127 info.getTypeName() + ": " + 3128 state + "/" + info.getDetailedState()); 3129 } 3130 3131 // Since mobile has the notion of a network/apn that can be used for 3132 // provisioning we need to check every time we're connected as 3133 // CaptiveProtalTracker won't detected it because DCT doesn't report it 3134 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 3135 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 3136 // is received by MDST and sent here as EVENT_STATE_CHANGED. 3137 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 3138 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 3139 Settings.Global.DEVICE_PROVISIONED, 0)) 3140 && (((state == NetworkInfo.State.CONNECTED) 3141 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 3142 || info.isConnectedToProvisioningNetwork())) { 3143 log("ConnectivityChange checkMobileProvisioning for" 3144 + " TYPE_MOBILE or ProvisioningNetwork"); 3145 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 3146 } 3147 3148 EventLogTags.writeConnectivityStateChanged( 3149 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 3150 3151 if (info.isConnectedToProvisioningNetwork()) { 3152 /** 3153 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 3154 * for now its an in between network, its a network that 3155 * is actually a default network but we don't want it to be 3156 * announced as such to keep background applications from 3157 * trying to use it. It turns out that some still try so we 3158 * take the additional step of clearing any default routes 3159 * to the link that may have incorrectly setup by the lower 3160 * levels. 3161 */ 3162 LinkProperties lp = getLinkPropertiesForTypeInternal(info.getType()); 3163 if (DBG) { 3164 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 3165 } 3166 3167 // Clear any default routes setup by the radio so 3168 // any activity by applications trying to use this 3169 // connection will fail until the provisioning network 3170 // is enabled. 3171 for (RouteInfo r : lp.getRoutes()) { 3172 removeRoute(lp, r, TO_DEFAULT_TABLE, 3173 mNetTrackers[info.getType()].getNetwork().netId); 3174 } 3175 } else if (state == NetworkInfo.State.DISCONNECTED) { 3176 } else if (state == NetworkInfo.State.SUSPENDED) { 3177 } else if (state == NetworkInfo.State.CONNECTED) { 3178 // handleConnect(info); 3179 } 3180 if (mLockdownTracker != null) { 3181 mLockdownTracker.onNetworkInfoChanged(info); 3182 } 3183 break; 3184 } 3185 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 3186 info = (NetworkInfo) msg.obj; 3187 // TODO: Temporary allowing network configuration 3188 // change not resetting sockets. 3189 // @see bug/4455071 3190 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 3191 false); 3192 break; 3193 } 3194 case NetworkStateTracker.EVENT_NETWORK_SUBTYPE_CHANGED: { 3195 info = (NetworkInfo) msg.obj; 3196 int type = info.getType(); 3197 if (mNetConfigs[type].isDefault()) updateNetworkSettings(mNetTrackers[type]); 3198 break; 3199 } 3200 } 3201 } 3202 } 3203 3204 private void handleAsyncChannelHalfConnect(Message msg) { 3205 AsyncChannel ac = (AsyncChannel) msg.obj; 3206 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 3207 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3208 if (VDBG) log("NetworkFactory connected"); 3209 // A network factory has connected. Send it all current NetworkRequests. 3210 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3211 if (nri.isRequest == false) continue; 3212 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 3213 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 3214 (nai != null ? nai.currentScore : 0), 0, nri.request); 3215 } 3216 } else { 3217 loge("Error connecting NetworkFactory"); 3218 mNetworkFactoryInfos.remove(msg.obj); 3219 } 3220 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 3221 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3222 if (VDBG) log("NetworkAgent connected"); 3223 // A network agent has requested a connection. Establish the connection. 3224 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 3225 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 3226 } else { 3227 loge("Error connecting NetworkAgent"); 3228 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 3229 if (nai != null) { 3230 mNetworkForNetId.remove(nai.network.netId); 3231 mLegacyTypeTracker.remove(nai); 3232 } 3233 } 3234 } 3235 } 3236 private void handleAsyncChannelDisconnected(Message msg) { 3237 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3238 if (nai != null) { 3239 if (DBG) { 3240 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 3241 } 3242 // A network agent has disconnected. 3243 // Tell netd to clean up the configuration for this network 3244 // (routing rules, DNS, etc). 3245 try { 3246 mNetd.removeNetwork(nai.network.netId); 3247 } catch (Exception e) { 3248 loge("Exception removing network: " + e); 3249 } 3250 // TODO - if we move the logic to the network agent (have them disconnect 3251 // because they lost all their requests or because their score isn't good) 3252 // then they would disconnect organically, report their new state and then 3253 // disconnect the channel. 3254 if (nai.networkInfo.isConnected()) { 3255 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 3256 null, null); 3257 } 3258 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 3259 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 3260 mNetworkAgentInfos.remove(msg.replyTo); 3261 updateClat(null, nai.linkProperties, nai); 3262 mLegacyTypeTracker.remove(nai); 3263 mNetworkForNetId.remove(nai.network.netId); 3264 // Since we've lost the network, go through all the requests that 3265 // it was satisfying and see if any other factory can satisfy them. 3266 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 3267 for (int i = 0; i < nai.networkRequests.size(); i++) { 3268 NetworkRequest request = nai.networkRequests.valueAt(i); 3269 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 3270 if (VDBG) { 3271 log(" checking request " + request + ", currentNetwork = " + 3272 (currentNetwork != null ? currentNetwork.name() : "null")); 3273 } 3274 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 3275 mNetworkForRequestId.remove(request.requestId); 3276 sendUpdatedScoreToFactories(request, 0); 3277 NetworkAgentInfo alternative = null; 3278 for (Map.Entry entry : mNetworkAgentInfos.entrySet()) { 3279 NetworkAgentInfo existing = (NetworkAgentInfo)entry.getValue(); 3280 if (existing.networkInfo.isConnected() && 3281 request.networkCapabilities.satisfiedByNetworkCapabilities( 3282 existing.networkCapabilities) && 3283 (alternative == null || 3284 alternative.currentScore < existing.currentScore)) { 3285 alternative = existing; 3286 } 3287 } 3288 if (alternative != null && !toActivate.contains(alternative)) { 3289 toActivate.add(alternative); 3290 } 3291 } 3292 } 3293 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 3294 removeDataActivityTracking(nai); 3295 mActiveDefaultNetwork = ConnectivityManager.TYPE_NONE; 3296 } 3297 for (NetworkAgentInfo networkToActivate : toActivate) { 3298 networkToActivate.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 3299 } 3300 } 3301 } 3302 3303 private void handleRegisterNetworkRequest(Message msg) { 3304 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 3305 final NetworkCapabilities newCap = nri.request.networkCapabilities; 3306 int score = 0; 3307 3308 // Check for the best currently alive network that satisfies this request 3309 NetworkAgentInfo bestNetwork = null; 3310 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 3311 if (VDBG) log("handleRegisterNetworkRequest checking " + network.name()); 3312 if (newCap.satisfiedByNetworkCapabilities(network.networkCapabilities)) { 3313 if (VDBG) log("apparently satisfied. currentScore=" + network.currentScore); 3314 if ((bestNetwork == null) || bestNetwork.currentScore < network.currentScore) { 3315 bestNetwork = network; 3316 } 3317 } 3318 } 3319 if (bestNetwork != null) { 3320 if (VDBG) log("using " + bestNetwork.name()); 3321 bestNetwork.addRequest(nri.request); 3322 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 3323 int legacyType = nri.request.legacyType; 3324 if (legacyType != TYPE_NONE) { 3325 mLegacyTypeTracker.add(legacyType, bestNetwork); 3326 } 3327 notifyNetworkCallback(bestNetwork, nri); 3328 score = bestNetwork.currentScore; 3329 } 3330 mNetworkRequests.put(nri.request, nri); 3331 if (msg.what == EVENT_REGISTER_NETWORK_REQUEST) { 3332 if (DBG) log("sending new NetworkRequest to factories"); 3333 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3334 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 3335 0, nri.request); 3336 } 3337 } 3338 } 3339 3340 private void handleReleaseNetworkRequest(NetworkRequest request) { 3341 if (DBG) log("releasing NetworkRequest " + request); 3342 NetworkRequestInfo nri = mNetworkRequests.remove(request); 3343 if (nri != null) { 3344 // tell the network currently servicing this that it's no longer interested 3345 NetworkAgentInfo affectedNetwork = mNetworkForRequestId.get(nri.request.requestId); 3346 if (affectedNetwork != null) { 3347 mNetworkForRequestId.remove(nri.request.requestId); 3348 affectedNetwork.networkRequests.remove(nri.request.requestId); 3349 if (VDBG) { 3350 log(" Removing from current network " + affectedNetwork.name() + ", leaving " + 3351 affectedNetwork.networkRequests.size() + " requests."); 3352 } 3353 } 3354 3355 if (nri.isRequest) { 3356 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3357 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 3358 nri.request); 3359 } 3360 3361 if (affectedNetwork != null) { 3362 // check if this network still has live requests - otherwise, tear down 3363 // TODO - probably push this to the NF/NA 3364 boolean keep = false; 3365 for (int i = 0; i < affectedNetwork.networkRequests.size(); i++) { 3366 NetworkRequest r = affectedNetwork.networkRequests.valueAt(i); 3367 if (mNetworkRequests.get(r).isRequest) { 3368 keep = true; 3369 break; 3370 } 3371 } 3372 if (keep == false) { 3373 if (DBG) log("no live requests for " + affectedNetwork.name() + 3374 "; disconnecting"); 3375 affectedNetwork.asyncChannel.disconnect(); 3376 } 3377 } 3378 } 3379 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 3380 } 3381 } 3382 3383 private class InternalHandler extends Handler { 3384 public InternalHandler(Looper looper) { 3385 super(looper); 3386 } 3387 3388 @Override 3389 public void handleMessage(Message msg) { 3390 NetworkInfo info; 3391 switch (msg.what) { 3392 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 3393 String causedBy = null; 3394 synchronized (ConnectivityService.this) { 3395 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 3396 mNetTransitionWakeLock.isHeld()) { 3397 mNetTransitionWakeLock.release(); 3398 causedBy = mNetTransitionWakeLockCausedBy; 3399 } 3400 } 3401 if (causedBy != null) { 3402 log("NetTransition Wakelock for " + causedBy + " released by timeout"); 3403 } 3404 break; 3405 } 3406 case EVENT_RESTORE_DEFAULT_NETWORK: { 3407 FeatureUser u = (FeatureUser)msg.obj; 3408 u.expire(); 3409 break; 3410 } 3411 case EVENT_INET_CONDITION_CHANGE: { 3412 int netType = msg.arg1; 3413 int condition = msg.arg2; 3414 handleInetConditionChange(netType, condition); 3415 break; 3416 } 3417 case EVENT_INET_CONDITION_HOLD_END: { 3418 int netType = msg.arg1; 3419 int sequence = msg.arg2; 3420 handleInetConditionHoldEnd(netType, sequence); 3421 break; 3422 } 3423 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 3424 handleDeprecatedGlobalHttpProxy(); 3425 break; 3426 } 3427 case EVENT_SET_DEPENDENCY_MET: { 3428 boolean met = (msg.arg1 == ENABLED); 3429 handleSetDependencyMet(msg.arg2, met); 3430 break; 3431 } 3432 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 3433 Intent intent = (Intent)msg.obj; 3434 sendStickyBroadcast(intent); 3435 break; 3436 } 3437 case EVENT_SET_POLICY_DATA_ENABLE: { 3438 final int networkType = msg.arg1; 3439 final boolean enabled = msg.arg2 == ENABLED; 3440 handleSetPolicyDataEnable(networkType, enabled); 3441 break; 3442 } 3443 case EVENT_VPN_STATE_CHANGED: { 3444 if (mLockdownTracker != null) { 3445 mLockdownTracker.onVpnStateChanged((NetworkInfo) msg.obj); 3446 } 3447 break; 3448 } 3449 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 3450 int tag = mEnableFailFastMobileDataTag.get(); 3451 if (msg.arg1 == tag) { 3452 MobileDataStateTracker mobileDst = 3453 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3454 if (mobileDst != null) { 3455 mobileDst.setEnableFailFastMobileData(msg.arg2); 3456 } 3457 } else { 3458 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 3459 + " != tag:" + tag); 3460 } 3461 break; 3462 } 3463 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 3464 handleNetworkSamplingTimeout(); 3465 break; 3466 } 3467 case EVENT_PROXY_HAS_CHANGED: { 3468 handleApplyDefaultProxy((ProxyInfo)msg.obj); 3469 break; 3470 } 3471 case EVENT_REGISTER_NETWORK_FACTORY: { 3472 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 3473 break; 3474 } 3475 case EVENT_UNREGISTER_NETWORK_FACTORY: { 3476 handleUnregisterNetworkFactory((Messenger)msg.obj); 3477 break; 3478 } 3479 case EVENT_REGISTER_NETWORK_AGENT: { 3480 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 3481 break; 3482 } 3483 case EVENT_REGISTER_NETWORK_REQUEST: 3484 case EVENT_REGISTER_NETWORK_LISTENER: { 3485 handleRegisterNetworkRequest(msg); 3486 break; 3487 } 3488 case EVENT_RELEASE_NETWORK_REQUEST: { 3489 handleReleaseNetworkRequest((NetworkRequest) msg.obj); 3490 break; 3491 } 3492 } 3493 } 3494 } 3495 3496 // javadoc from interface 3497 public int tether(String iface) { 3498 enforceTetherChangePermission(); 3499 3500 if (isTetheringSupported()) { 3501 return mTethering.tether(iface); 3502 } else { 3503 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3504 } 3505 } 3506 3507 // javadoc from interface 3508 public int untether(String iface) { 3509 enforceTetherChangePermission(); 3510 3511 if (isTetheringSupported()) { 3512 return mTethering.untether(iface); 3513 } else { 3514 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3515 } 3516 } 3517 3518 // javadoc from interface 3519 public int getLastTetherError(String iface) { 3520 enforceTetherAccessPermission(); 3521 3522 if (isTetheringSupported()) { 3523 return mTethering.getLastTetherError(iface); 3524 } else { 3525 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3526 } 3527 } 3528 3529 // TODO - proper iface API for selection by property, inspection, etc 3530 public String[] getTetherableUsbRegexs() { 3531 enforceTetherAccessPermission(); 3532 if (isTetheringSupported()) { 3533 return mTethering.getTetherableUsbRegexs(); 3534 } else { 3535 return new String[0]; 3536 } 3537 } 3538 3539 public String[] getTetherableWifiRegexs() { 3540 enforceTetherAccessPermission(); 3541 if (isTetheringSupported()) { 3542 return mTethering.getTetherableWifiRegexs(); 3543 } else { 3544 return new String[0]; 3545 } 3546 } 3547 3548 public String[] getTetherableBluetoothRegexs() { 3549 enforceTetherAccessPermission(); 3550 if (isTetheringSupported()) { 3551 return mTethering.getTetherableBluetoothRegexs(); 3552 } else { 3553 return new String[0]; 3554 } 3555 } 3556 3557 public int setUsbTethering(boolean enable) { 3558 enforceTetherChangePermission(); 3559 if (isTetheringSupported()) { 3560 return mTethering.setUsbTethering(enable); 3561 } else { 3562 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3563 } 3564 } 3565 3566 // TODO - move iface listing, queries, etc to new module 3567 // javadoc from interface 3568 public String[] getTetherableIfaces() { 3569 enforceTetherAccessPermission(); 3570 return mTethering.getTetherableIfaces(); 3571 } 3572 3573 public String[] getTetheredIfaces() { 3574 enforceTetherAccessPermission(); 3575 return mTethering.getTetheredIfaces(); 3576 } 3577 3578 public String[] getTetheringErroredIfaces() { 3579 enforceTetherAccessPermission(); 3580 return mTethering.getErroredIfaces(); 3581 } 3582 3583 // if ro.tether.denied = true we default to no tethering 3584 // gservices could set the secure setting to 1 though to enable it on a build where it 3585 // had previously been turned off. 3586 public boolean isTetheringSupported() { 3587 enforceTetherAccessPermission(); 3588 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 3589 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 3590 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0); 3591 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 3592 mTethering.getTetherableWifiRegexs().length != 0 || 3593 mTethering.getTetherableBluetoothRegexs().length != 0) && 3594 mTethering.getUpstreamIfaceTypes().length != 0); 3595 } 3596 3597 // An API NetworkStateTrackers can call when they lose their network. 3598 // This will automatically be cleared after X seconds or a network becomes CONNECTED, 3599 // whichever happens first. The timer is started by the first caller and not 3600 // restarted by subsequent callers. 3601 public void requestNetworkTransitionWakelock(String forWhom) { 3602 enforceConnectivityInternalPermission(); 3603 synchronized (this) { 3604 if (mNetTransitionWakeLock.isHeld()) return; 3605 mNetTransitionWakeLockSerialNumber++; 3606 mNetTransitionWakeLock.acquire(); 3607 mNetTransitionWakeLockCausedBy = forWhom; 3608 } 3609 mHandler.sendMessageDelayed(mHandler.obtainMessage( 3610 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 3611 mNetTransitionWakeLockSerialNumber, 0), 3612 mNetTransitionWakeLockTimeout); 3613 return; 3614 } 3615 3616 // 100 percent is full good, 0 is full bad. 3617 public void reportInetCondition(int networkType, int percentage) { 3618 if (VDBG) log("reportNetworkCondition(" + networkType + ", " + percentage + ")"); 3619 mContext.enforceCallingOrSelfPermission( 3620 android.Manifest.permission.STATUS_BAR, 3621 "ConnectivityService"); 3622 3623 if (DBG) { 3624 int pid = getCallingPid(); 3625 int uid = getCallingUid(); 3626 String s = pid + "(" + uid + ") reports inet is " + 3627 (percentage > 50 ? "connected" : "disconnected") + " (" + percentage + ") on " + 3628 "network Type " + networkType + " at " + GregorianCalendar.getInstance().getTime(); 3629 mInetLog.add(s); 3630 while(mInetLog.size() > INET_CONDITION_LOG_MAX_SIZE) { 3631 mInetLog.remove(0); 3632 } 3633 } 3634 mHandler.sendMessage(mHandler.obtainMessage( 3635 EVENT_INET_CONDITION_CHANGE, networkType, percentage)); 3636 } 3637 3638 public void reportBadNetwork(Network network) { 3639 //TODO 3640 } 3641 3642 private void handleInetConditionChange(int netType, int condition) { 3643 if (mActiveDefaultNetwork == -1) { 3644 if (DBG) log("handleInetConditionChange: no active default network - ignore"); 3645 return; 3646 } 3647 if (mActiveDefaultNetwork != netType) { 3648 if (DBG) log("handleInetConditionChange: net=" + netType + 3649 " != default=" + mActiveDefaultNetwork + " - ignore"); 3650 return; 3651 } 3652 if (VDBG) { 3653 log("handleInetConditionChange: net=" + 3654 netType + ", condition=" + condition + 3655 ",mActiveDefaultNetwork=" + mActiveDefaultNetwork); 3656 } 3657 mDefaultInetCondition = condition; 3658 int delay; 3659 if (mInetConditionChangeInFlight == false) { 3660 if (VDBG) log("handleInetConditionChange: starting a change hold"); 3661 // setup a new hold to debounce this 3662 if (mDefaultInetCondition > 50) { 3663 delay = Settings.Global.getInt(mContext.getContentResolver(), 3664 Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY, 500); 3665 } else { 3666 delay = Settings.Global.getInt(mContext.getContentResolver(), 3667 Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 3000); 3668 } 3669 mInetConditionChangeInFlight = true; 3670 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_INET_CONDITION_HOLD_END, 3671 mActiveDefaultNetwork, mDefaultConnectionSequence), delay); 3672 } else { 3673 // we've set the new condition, when this hold ends that will get picked up 3674 if (VDBG) log("handleInetConditionChange: currently in hold - not setting new end evt"); 3675 } 3676 } 3677 3678 private void handleInetConditionHoldEnd(int netType, int sequence) { 3679 if (DBG) { 3680 log("handleInetConditionHoldEnd: net=" + netType + 3681 ", condition=" + mDefaultInetCondition + 3682 ", published condition=" + mDefaultInetConditionPublished); 3683 } 3684 mInetConditionChangeInFlight = false; 3685 3686 if (mActiveDefaultNetwork == -1) { 3687 if (DBG) log("handleInetConditionHoldEnd: no active default network - ignoring"); 3688 return; 3689 } 3690 if (mDefaultConnectionSequence != sequence) { 3691 if (DBG) log("handleInetConditionHoldEnd: event hold for obsolete network - ignoring"); 3692 return; 3693 } 3694 // TODO: Figure out why this optimization sometimes causes a 3695 // change in mDefaultInetCondition to be missed and the 3696 // UI to not be updated. 3697 //if (mDefaultInetConditionPublished == mDefaultInetCondition) { 3698 // if (DBG) log("no change in condition - aborting"); 3699 // return; 3700 //} 3701 NetworkInfo networkInfo = getNetworkInfoForType(mActiveDefaultNetwork); 3702 if (networkInfo.isConnected() == false) { 3703 if (DBG) log("handleInetConditionHoldEnd: default network not connected - ignoring"); 3704 return; 3705 } 3706 mDefaultInetConditionPublished = mDefaultInetCondition; 3707 sendInetConditionBroadcast(networkInfo); 3708 return; 3709 } 3710 3711 public ProxyInfo getProxy() { 3712 // this information is already available as a world read/writable jvm property 3713 // so this API change wouldn't have a benifit. It also breaks the passing 3714 // of proxy info to all the JVMs. 3715 // enforceAccessPermission(); 3716 synchronized (mProxyLock) { 3717 ProxyInfo ret = mGlobalProxy; 3718 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 3719 return ret; 3720 } 3721 } 3722 3723 public void setGlobalProxy(ProxyInfo proxyProperties) { 3724 enforceConnectivityInternalPermission(); 3725 3726 synchronized (mProxyLock) { 3727 if (proxyProperties == mGlobalProxy) return; 3728 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 3729 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 3730 3731 String host = ""; 3732 int port = 0; 3733 String exclList = ""; 3734 String pacFileUrl = ""; 3735 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 3736 (proxyProperties.getPacFileUrl() != null))) { 3737 if (!proxyProperties.isValid()) { 3738 if (DBG) 3739 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3740 return; 3741 } 3742 mGlobalProxy = new ProxyInfo(proxyProperties); 3743 host = mGlobalProxy.getHost(); 3744 port = mGlobalProxy.getPort(); 3745 exclList = mGlobalProxy.getExclusionListAsString(); 3746 if (proxyProperties.getPacFileUrl() != null) { 3747 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 3748 } 3749 } else { 3750 mGlobalProxy = null; 3751 } 3752 ContentResolver res = mContext.getContentResolver(); 3753 final long token = Binder.clearCallingIdentity(); 3754 try { 3755 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 3756 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 3757 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 3758 exclList); 3759 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 3760 } finally { 3761 Binder.restoreCallingIdentity(token); 3762 } 3763 } 3764 3765 if (mGlobalProxy == null) { 3766 proxyProperties = mDefaultProxy; 3767 } 3768 sendProxyBroadcast(proxyProperties); 3769 } 3770 3771 private void loadGlobalProxy() { 3772 ContentResolver res = mContext.getContentResolver(); 3773 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 3774 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 3775 String exclList = Settings.Global.getString(res, 3776 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 3777 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 3778 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 3779 ProxyInfo proxyProperties; 3780 if (!TextUtils.isEmpty(pacFileUrl)) { 3781 proxyProperties = new ProxyInfo(pacFileUrl); 3782 } else { 3783 proxyProperties = new ProxyInfo(host, port, exclList); 3784 } 3785 if (!proxyProperties.isValid()) { 3786 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3787 return; 3788 } 3789 3790 synchronized (mProxyLock) { 3791 mGlobalProxy = proxyProperties; 3792 } 3793 } 3794 } 3795 3796 public ProxyInfo getGlobalProxy() { 3797 // this information is already available as a world read/writable jvm property 3798 // so this API change wouldn't have a benifit. It also breaks the passing 3799 // of proxy info to all the JVMs. 3800 // enforceAccessPermission(); 3801 synchronized (mProxyLock) { 3802 return mGlobalProxy; 3803 } 3804 } 3805 3806 private void handleApplyDefaultProxy(ProxyInfo proxy) { 3807 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3808 && (proxy.getPacFileUrl() == null)) { 3809 proxy = null; 3810 } 3811 synchronized (mProxyLock) { 3812 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3813 if (mDefaultProxy == proxy) return; // catches repeated nulls 3814 if (proxy != null && !proxy.isValid()) { 3815 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3816 return; 3817 } 3818 3819 // This call could be coming from the PacManager, containing the port of the local 3820 // proxy. If this new proxy matches the global proxy then copy this proxy to the 3821 // global (to get the correct local port), and send a broadcast. 3822 // TODO: Switch PacManager to have its own message to send back rather than 3823 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 3824 if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null) 3825 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 3826 mGlobalProxy = proxy; 3827 sendProxyBroadcast(mGlobalProxy); 3828 return; 3829 } 3830 mDefaultProxy = proxy; 3831 3832 if (mGlobalProxy != null) return; 3833 if (!mDefaultProxyDisabled) { 3834 sendProxyBroadcast(proxy); 3835 } 3836 } 3837 } 3838 3839 private void handleDeprecatedGlobalHttpProxy() { 3840 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3841 Settings.Global.HTTP_PROXY); 3842 if (!TextUtils.isEmpty(proxy)) { 3843 String data[] = proxy.split(":"); 3844 if (data.length == 0) { 3845 return; 3846 } 3847 3848 String proxyHost = data[0]; 3849 int proxyPort = 8080; 3850 if (data.length > 1) { 3851 try { 3852 proxyPort = Integer.parseInt(data[1]); 3853 } catch (NumberFormatException e) { 3854 return; 3855 } 3856 } 3857 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 3858 setGlobalProxy(p); 3859 } 3860 } 3861 3862 private void sendProxyBroadcast(ProxyInfo proxy) { 3863 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 3864 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3865 if (DBG) log("sending Proxy Broadcast for " + proxy); 3866 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3867 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3868 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3869 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3870 final long ident = Binder.clearCallingIdentity(); 3871 try { 3872 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3873 } finally { 3874 Binder.restoreCallingIdentity(ident); 3875 } 3876 } 3877 3878 private static class SettingsObserver extends ContentObserver { 3879 private int mWhat; 3880 private Handler mHandler; 3881 SettingsObserver(Handler handler, int what) { 3882 super(handler); 3883 mHandler = handler; 3884 mWhat = what; 3885 } 3886 3887 void observe(Context context) { 3888 ContentResolver resolver = context.getContentResolver(); 3889 resolver.registerContentObserver(Settings.Global.getUriFor( 3890 Settings.Global.HTTP_PROXY), false, this); 3891 } 3892 3893 @Override 3894 public void onChange(boolean selfChange) { 3895 mHandler.obtainMessage(mWhat).sendToTarget(); 3896 } 3897 } 3898 3899 private static void log(String s) { 3900 Slog.d(TAG, s); 3901 } 3902 3903 private static void loge(String s) { 3904 Slog.e(TAG, s); 3905 } 3906 3907 int convertFeatureToNetworkType(int networkType, String feature) { 3908 int usedNetworkType = networkType; 3909 3910 if(networkType == ConnectivityManager.TYPE_MOBILE) { 3911 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 3912 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 3913 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 3914 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 3915 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 3916 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 3917 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 3918 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 3919 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 3920 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 3921 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 3922 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 3923 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 3924 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 3925 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 3926 } else { 3927 Slog.e(TAG, "Can't match any mobile netTracker!"); 3928 } 3929 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 3930 if (TextUtils.equals(feature, "p2p")) { 3931 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 3932 } else { 3933 Slog.e(TAG, "Can't match any wifi netTracker!"); 3934 } 3935 } else { 3936 Slog.e(TAG, "Unexpected network type"); 3937 } 3938 return usedNetworkType; 3939 } 3940 3941 private static <T> T checkNotNull(T value, String message) { 3942 if (value == null) { 3943 throw new NullPointerException(message); 3944 } 3945 return value; 3946 } 3947 3948 /** 3949 * Protect a socket from VPN routing rules. This method is used by 3950 * VpnBuilder and not available in ConnectivityManager. Permissions 3951 * are checked in Vpn class. 3952 * @hide 3953 */ 3954 @Override 3955 public boolean protectVpn(ParcelFileDescriptor socket) { 3956 throwIfLockdownEnabled(); 3957 try { 3958 int type = mActiveDefaultNetwork; 3959 int user = UserHandle.getUserId(Binder.getCallingUid()); 3960 if (ConnectivityManager.isNetworkTypeValid(type) && mNetTrackers[type] != null) { 3961 synchronized(mVpns) { 3962 mVpns.get(user).protect(socket); 3963 } 3964 return true; 3965 } 3966 } catch (Exception e) { 3967 // ignore 3968 } finally { 3969 try { 3970 socket.close(); 3971 } catch (Exception e) { 3972 // ignore 3973 } 3974 } 3975 return false; 3976 } 3977 3978 /** 3979 * Prepare for a VPN application. This method is used by VpnDialogs 3980 * and not available in ConnectivityManager. Permissions are checked 3981 * in Vpn class. 3982 * @hide 3983 */ 3984 @Override 3985 public boolean prepareVpn(String oldPackage, String newPackage) { 3986 throwIfLockdownEnabled(); 3987 int user = UserHandle.getUserId(Binder.getCallingUid()); 3988 synchronized(mVpns) { 3989 return mVpns.get(user).prepare(oldPackage, newPackage); 3990 } 3991 } 3992 3993 @Override 3994 public void markSocketAsUser(ParcelFileDescriptor socket, int uid) { 3995 enforceMarkNetworkSocketPermission(); 3996 final long token = Binder.clearCallingIdentity(); 3997 try { 3998 int mark = mNetd.getMarkForUid(uid); 3999 // Clear the mark on the socket if no mark is needed to prevent socket reuse issues 4000 if (mark == -1) { 4001 mark = 0; 4002 } 4003 NetworkUtils.markSocket(socket.getFd(), mark); 4004 } catch (RemoteException e) { 4005 } finally { 4006 Binder.restoreCallingIdentity(token); 4007 } 4008 } 4009 4010 /** 4011 * Configure a TUN interface and return its file descriptor. Parameters 4012 * are encoded and opaque to this class. This method is used by VpnBuilder 4013 * and not available in ConnectivityManager. Permissions are checked in 4014 * Vpn class. 4015 * @hide 4016 */ 4017 @Override 4018 public ParcelFileDescriptor establishVpn(VpnConfig config) { 4019 throwIfLockdownEnabled(); 4020 int user = UserHandle.getUserId(Binder.getCallingUid()); 4021 synchronized(mVpns) { 4022 return mVpns.get(user).establish(config); 4023 } 4024 } 4025 4026 /** 4027 * Start legacy VPN, controlling native daemons as needed. Creates a 4028 * secondary thread to perform connection work, returning quickly. 4029 */ 4030 @Override 4031 public void startLegacyVpn(VpnProfile profile) { 4032 throwIfLockdownEnabled(); 4033 final LinkProperties egress = getActiveLinkProperties(); 4034 if (egress == null) { 4035 throw new IllegalStateException("Missing active network connection"); 4036 } 4037 int user = UserHandle.getUserId(Binder.getCallingUid()); 4038 synchronized(mVpns) { 4039 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 4040 } 4041 } 4042 4043 /** 4044 * Return the information of the ongoing legacy VPN. This method is used 4045 * by VpnSettings and not available in ConnectivityManager. Permissions 4046 * are checked in Vpn class. 4047 * @hide 4048 */ 4049 @Override 4050 public LegacyVpnInfo getLegacyVpnInfo() { 4051 throwIfLockdownEnabled(); 4052 int user = UserHandle.getUserId(Binder.getCallingUid()); 4053 synchronized(mVpns) { 4054 return mVpns.get(user).getLegacyVpnInfo(); 4055 } 4056 } 4057 4058 /** 4059 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 4060 * not available in ConnectivityManager. 4061 * Permissions are checked in Vpn class. 4062 * @hide 4063 */ 4064 @Override 4065 public VpnConfig getVpnConfig() { 4066 int user = UserHandle.getUserId(Binder.getCallingUid()); 4067 synchronized(mVpns) { 4068 return mVpns.get(user).getVpnConfig(); 4069 } 4070 } 4071 4072 /** 4073 * Callback for VPN subsystem. Currently VPN is not adapted to the service 4074 * through NetworkStateTracker since it works differently. For example, it 4075 * needs to override DNS servers but never takes the default routes. It 4076 * relies on another data network, and it could keep existing connections 4077 * alive after reconnecting, switching between networks, or even resuming 4078 * from deep sleep. Calls from applications should be done synchronously 4079 * to avoid race conditions. As these are all hidden APIs, refactoring can 4080 * be done whenever a better abstraction is developed. 4081 */ 4082 public class VpnCallback { 4083 private VpnCallback() { 4084 } 4085 4086 public void onStateChanged(NetworkInfo info) { 4087 mHandler.obtainMessage(EVENT_VPN_STATE_CHANGED, info).sendToTarget(); 4088 } 4089 4090 public void override(String iface, List<String> dnsServers, List<String> searchDomains) { 4091 if (dnsServers == null) { 4092 restore(); 4093 return; 4094 } 4095 4096 // Convert DNS servers into addresses. 4097 List<InetAddress> addresses = new ArrayList<InetAddress>(); 4098 for (String address : dnsServers) { 4099 // Double check the addresses and remove invalid ones. 4100 try { 4101 addresses.add(InetAddress.parseNumericAddress(address)); 4102 } catch (Exception e) { 4103 // ignore 4104 } 4105 } 4106 if (addresses.isEmpty()) { 4107 restore(); 4108 return; 4109 } 4110 4111 // Concatenate search domains into a string. 4112 StringBuilder buffer = new StringBuilder(); 4113 if (searchDomains != null) { 4114 for (String domain : searchDomains) { 4115 buffer.append(domain).append(' '); 4116 } 4117 } 4118 String domains = buffer.toString().trim(); 4119 4120 // Apply DNS changes. 4121 synchronized (mDnsLock) { 4122 // TODO: Re-enable this when the netId of the VPN is known. 4123 // updateDnsLocked("VPN", netId, addresses, domains); 4124 } 4125 4126 // Temporarily disable the default proxy (not global). 4127 synchronized (mProxyLock) { 4128 mDefaultProxyDisabled = true; 4129 if (mGlobalProxy == null && mDefaultProxy != null) { 4130 sendProxyBroadcast(null); 4131 } 4132 } 4133 4134 // TODO: support proxy per network. 4135 } 4136 4137 public void restore() { 4138 synchronized (mProxyLock) { 4139 mDefaultProxyDisabled = false; 4140 if (mGlobalProxy == null && mDefaultProxy != null) { 4141 sendProxyBroadcast(mDefaultProxy); 4142 } 4143 } 4144 } 4145 4146 public void protect(ParcelFileDescriptor socket) { 4147 try { 4148 final int mark = mNetd.getMarkForProtect(); 4149 NetworkUtils.markSocket(socket.getFd(), mark); 4150 } catch (RemoteException e) { 4151 } 4152 } 4153 4154 public void setRoutes(String interfaze, List<RouteInfo> routes) { 4155 for (RouteInfo route : routes) { 4156 try { 4157 mNetd.setMarkedForwardingRoute(interfaze, route); 4158 } catch (RemoteException e) { 4159 } 4160 } 4161 } 4162 4163 public void setMarkedForwarding(String interfaze) { 4164 try { 4165 mNetd.setMarkedForwarding(interfaze); 4166 } catch (RemoteException e) { 4167 } 4168 } 4169 4170 public void clearMarkedForwarding(String interfaze) { 4171 try { 4172 mNetd.clearMarkedForwarding(interfaze); 4173 } catch (RemoteException e) { 4174 } 4175 } 4176 4177 public void addUserForwarding(String interfaze, int uid, boolean forwardDns) { 4178 int uidStart = uid * UserHandle.PER_USER_RANGE; 4179 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 4180 addUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 4181 } 4182 4183 public void clearUserForwarding(String interfaze, int uid, boolean forwardDns) { 4184 int uidStart = uid * UserHandle.PER_USER_RANGE; 4185 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 4186 clearUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 4187 } 4188 4189 public void addUidForwarding(String interfaze, int uidStart, int uidEnd, 4190 boolean forwardDns) { 4191 // TODO: Re-enable this when the netId of the VPN is known. 4192 // try { 4193 // mNetd.setUidRangeRoute(netId, uidStart, uidEnd, forwardDns); 4194 // } catch (RemoteException e) { 4195 // } 4196 4197 } 4198 4199 public void clearUidForwarding(String interfaze, int uidStart, int uidEnd, 4200 boolean forwardDns) { 4201 // TODO: Re-enable this when the netId of the VPN is known. 4202 // try { 4203 // mNetd.clearUidRangeRoute(interfaze, uidStart, uidEnd); 4204 // } catch (RemoteException e) { 4205 // } 4206 4207 } 4208 } 4209 4210 @Override 4211 public boolean updateLockdownVpn() { 4212 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 4213 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 4214 return false; 4215 } 4216 4217 // Tear down existing lockdown if profile was removed 4218 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 4219 if (mLockdownEnabled) { 4220 if (!mKeyStore.isUnlocked()) { 4221 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 4222 return false; 4223 } 4224 4225 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 4226 final VpnProfile profile = VpnProfile.decode( 4227 profileName, mKeyStore.get(Credentials.VPN + profileName)); 4228 int user = UserHandle.getUserId(Binder.getCallingUid()); 4229 synchronized(mVpns) { 4230 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 4231 profile)); 4232 } 4233 } else { 4234 setLockdownTracker(null); 4235 } 4236 4237 return true; 4238 } 4239 4240 /** 4241 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 4242 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 4243 */ 4244 private void setLockdownTracker(LockdownVpnTracker tracker) { 4245 // Shutdown any existing tracker 4246 final LockdownVpnTracker existing = mLockdownTracker; 4247 mLockdownTracker = null; 4248 if (existing != null) { 4249 existing.shutdown(); 4250 } 4251 4252 try { 4253 if (tracker != null) { 4254 mNetd.setFirewallEnabled(true); 4255 mNetd.setFirewallInterfaceRule("lo", true); 4256 mLockdownTracker = tracker; 4257 mLockdownTracker.init(); 4258 } else { 4259 mNetd.setFirewallEnabled(false); 4260 } 4261 } catch (RemoteException e) { 4262 // ignored; NMS lives inside system_server 4263 } 4264 } 4265 4266 private void throwIfLockdownEnabled() { 4267 if (mLockdownEnabled) { 4268 throw new IllegalStateException("Unavailable in lockdown mode"); 4269 } 4270 } 4271 4272 public void supplyMessenger(int networkType, Messenger messenger) { 4273 enforceConnectivityInternalPermission(); 4274 4275 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 4276 mNetTrackers[networkType].supplyMessenger(messenger); 4277 } 4278 } 4279 4280 public int findConnectionTypeForIface(String iface) { 4281 enforceConnectivityInternalPermission(); 4282 4283 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 4284 for (NetworkStateTracker tracker : mNetTrackers) { 4285 if (tracker != null) { 4286 LinkProperties lp = tracker.getLinkProperties(); 4287 if (lp != null && iface.equals(lp.getInterfaceName())) { 4288 return tracker.getNetworkInfo().getType(); 4289 } 4290 } 4291 } 4292 return ConnectivityManager.TYPE_NONE; 4293 } 4294 4295 /** 4296 * Have mobile data fail fast if enabled. 4297 * 4298 * @param enabled DctConstants.ENABLED/DISABLED 4299 */ 4300 private void setEnableFailFastMobileData(int enabled) { 4301 int tag; 4302 4303 if (enabled == DctConstants.ENABLED) { 4304 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 4305 } else { 4306 tag = mEnableFailFastMobileDataTag.get(); 4307 } 4308 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 4309 enabled)); 4310 } 4311 4312 private boolean isMobileDataStateTrackerReady() { 4313 MobileDataStateTracker mdst = 4314 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4315 return (mdst != null) && (mdst.isReady()); 4316 } 4317 4318 /** 4319 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 4320 */ 4321 4322 /** 4323 * No connection was possible to the network. 4324 * This is NOT a warm sim. 4325 */ 4326 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 4327 4328 /** 4329 * A connection was made to the internet, all is well. 4330 * This is NOT a warm sim. 4331 */ 4332 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 4333 4334 /** 4335 * A connection was made but no dns server was available to resolve a name to address. 4336 * This is NOT a warm sim since provisioning network is supported. 4337 */ 4338 private static final int CMP_RESULT_CODE_NO_DNS = 2; 4339 4340 /** 4341 * A connection was made but could not open a TCP connection. 4342 * This is NOT a warm sim since provisioning network is supported. 4343 */ 4344 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 4345 4346 /** 4347 * A connection was made but there was a redirection, we appear to be in walled garden. 4348 * This is an indication of a warm sim on a mobile network such as T-Mobile. 4349 */ 4350 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 4351 4352 /** 4353 * The mobile network is a provisioning network. 4354 * This is an indication of a warm sim on a mobile network such as AT&T. 4355 */ 4356 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 4357 4358 /** 4359 * The mobile network is provisioning 4360 */ 4361 private static final int CMP_RESULT_CODE_IS_PROVISIONING = 6; 4362 4363 private AtomicBoolean mIsProvisioningNetwork = new AtomicBoolean(false); 4364 private AtomicBoolean mIsStartingProvisioning = new AtomicBoolean(false); 4365 4366 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 4367 4368 @Override 4369 public int checkMobileProvisioning(int suggestedTimeOutMs) { 4370 int timeOutMs = -1; 4371 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 4372 enforceConnectivityInternalPermission(); 4373 4374 final long token = Binder.clearCallingIdentity(); 4375 try { 4376 timeOutMs = suggestedTimeOutMs; 4377 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 4378 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 4379 } 4380 4381 // Check that mobile networks are supported 4382 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 4383 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 4384 if (DBG) log("checkMobileProvisioning: X no mobile network"); 4385 return timeOutMs; 4386 } 4387 4388 // If we're already checking don't do it again 4389 // TODO: Add a queue of results... 4390 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 4391 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 4392 return timeOutMs; 4393 } 4394 4395 // Start off with mobile notification off 4396 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4397 4398 CheckMp checkMp = new CheckMp(mContext, this); 4399 CheckMp.CallBack cb = new CheckMp.CallBack() { 4400 @Override 4401 void onComplete(Integer result) { 4402 if (DBG) log("CheckMp.onComplete: result=" + result); 4403 NetworkInfo ni = 4404 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 4405 switch(result) { 4406 case CMP_RESULT_CODE_CONNECTABLE: 4407 case CMP_RESULT_CODE_NO_CONNECTION: 4408 case CMP_RESULT_CODE_NO_DNS: 4409 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 4410 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 4411 break; 4412 } 4413 case CMP_RESULT_CODE_REDIRECTED: { 4414 if (DBG) log("CheckMp.onComplete: warm sim"); 4415 String url = getMobileProvisioningUrl(); 4416 if (TextUtils.isEmpty(url)) { 4417 url = getMobileRedirectedProvisioningUrl(); 4418 } 4419 if (TextUtils.isEmpty(url) == false) { 4420 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 4421 setProvNotificationVisible(true, 4422 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4423 url); 4424 } else { 4425 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 4426 } 4427 break; 4428 } 4429 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 4430 String url = getMobileProvisioningUrl(); 4431 if (TextUtils.isEmpty(url) == false) { 4432 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 4433 setProvNotificationVisible(true, 4434 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4435 url); 4436 // Mark that we've got a provisioning network and 4437 // Disable Mobile Data until user actually starts provisioning. 4438 mIsProvisioningNetwork.set(true); 4439 MobileDataStateTracker mdst = (MobileDataStateTracker) 4440 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4441 4442 // Disable radio until user starts provisioning 4443 mdst.setRadio(false); 4444 } else { 4445 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 4446 } 4447 break; 4448 } 4449 case CMP_RESULT_CODE_IS_PROVISIONING: { 4450 // FIXME: Need to know when provisioning is done. Probably we can 4451 // check the completion status if successful we're done if we 4452 // "timedout" or still connected to provisioning APN turn off data? 4453 if (DBG) log("CheckMp.onComplete: provisioning started"); 4454 mIsStartingProvisioning.set(false); 4455 break; 4456 } 4457 default: { 4458 loge("CheckMp.onComplete: ignore unexpected result=" + result); 4459 break; 4460 } 4461 } 4462 mIsCheckingMobileProvisioning.set(false); 4463 } 4464 }; 4465 CheckMp.Params params = 4466 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 4467 if (DBG) log("checkMobileProvisioning: params=" + params); 4468 // TODO: Reenable when calls to the now defunct 4469 // MobileDataStateTracker.isProvisioningNetwork() are removed. 4470 // This code should be moved to the Telephony code. 4471 // checkMp.execute(params); 4472 } finally { 4473 Binder.restoreCallingIdentity(token); 4474 if (DBG) log("checkMobileProvisioning: X"); 4475 } 4476 return timeOutMs; 4477 } 4478 4479 static class CheckMp extends 4480 AsyncTask<CheckMp.Params, Void, Integer> { 4481 private static final String CHECKMP_TAG = "CheckMp"; 4482 4483 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 4484 private static boolean mTestingFailures; 4485 4486 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 4487 private static final int MAX_LOOPS = 4; 4488 4489 // Number of milli-seconds to complete all of the retires 4490 public static final int MAX_TIMEOUT_MS = 60000; 4491 4492 // The socket should retry only 5 seconds, the default is longer 4493 private static final int SOCKET_TIMEOUT_MS = 5000; 4494 4495 // Sleep time for network errors 4496 private static final int NET_ERROR_SLEEP_SEC = 3; 4497 4498 // Sleep time for network route establishment 4499 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 4500 4501 // Short sleep time for polling :( 4502 private static final int POLLING_SLEEP_SEC = 1; 4503 4504 private Context mContext; 4505 private ConnectivityService mCs; 4506 private TelephonyManager mTm; 4507 private Params mParams; 4508 4509 /** 4510 * Parameters for AsyncTask.execute 4511 */ 4512 static class Params { 4513 private String mUrl; 4514 private long mTimeOutMs; 4515 private CallBack mCb; 4516 4517 Params(String url, long timeOutMs, CallBack cb) { 4518 mUrl = url; 4519 mTimeOutMs = timeOutMs; 4520 mCb = cb; 4521 } 4522 4523 @Override 4524 public String toString() { 4525 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 4526 } 4527 } 4528 4529 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 4530 // issued by name or ip address, for Google its by name so when we construct 4531 // this HostnameVerifier we'll pass the original Uri and use it to verify 4532 // the host. If the host name in the original uril fails we'll test the 4533 // hostname parameter just incase things change. 4534 static class CheckMpHostnameVerifier implements HostnameVerifier { 4535 Uri mOrgUri; 4536 4537 CheckMpHostnameVerifier(Uri orgUri) { 4538 mOrgUri = orgUri; 4539 } 4540 4541 @Override 4542 public boolean verify(String hostname, SSLSession session) { 4543 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 4544 String orgUriHost = mOrgUri.getHost(); 4545 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 4546 if (DBG) { 4547 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 4548 + " orgUriHost=" + orgUriHost); 4549 } 4550 return retVal; 4551 } 4552 } 4553 4554 /** 4555 * The call back object passed in Params. onComplete will be called 4556 * on the main thread. 4557 */ 4558 abstract static class CallBack { 4559 // Called on the main thread. 4560 abstract void onComplete(Integer result); 4561 } 4562 4563 public CheckMp(Context context, ConnectivityService cs) { 4564 if (Build.IS_DEBUGGABLE) { 4565 mTestingFailures = 4566 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 4567 } else { 4568 mTestingFailures = false; 4569 } 4570 4571 mContext = context; 4572 mCs = cs; 4573 4574 // Setup access to TelephonyService we'll be using. 4575 mTm = (TelephonyManager) mContext.getSystemService( 4576 Context.TELEPHONY_SERVICE); 4577 } 4578 4579 /** 4580 * Get the default url to use for the test. 4581 */ 4582 public String getDefaultUrl() { 4583 // See http://go/clientsdns for usage approval 4584 String server = Settings.Global.getString(mContext.getContentResolver(), 4585 Settings.Global.CAPTIVE_PORTAL_SERVER); 4586 if (server == null) { 4587 server = "clients3.google.com"; 4588 } 4589 return "http://" + server + "/generate_204"; 4590 } 4591 4592 /** 4593 * Detect if its possible to connect to the http url. DNS based detection techniques 4594 * do not work at all hotspots. The best way to check is to perform a request to 4595 * a known address that fetches the data we expect. 4596 */ 4597 private synchronized Integer isMobileOk(Params params) { 4598 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 4599 Uri orgUri = Uri.parse(params.mUrl); 4600 Random rand = new Random(); 4601 mParams = params; 4602 4603 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 4604 result = CMP_RESULT_CODE_NO_CONNECTION; 4605 log("isMobileOk: X not mobile capable result=" + result); 4606 return result; 4607 } 4608 4609 if (mCs.mIsStartingProvisioning.get()) { 4610 result = CMP_RESULT_CODE_IS_PROVISIONING; 4611 log("isMobileOk: X is provisioning result=" + result); 4612 return result; 4613 } 4614 4615 // See if we've already determined we've got a provisioning connection, 4616 // if so we don't need to do anything active. 4617 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 4618 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4619 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 4620 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 4621 4622 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 4623 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4624 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 4625 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 4626 4627 if (isDefaultProvisioning || isHipriProvisioning) { 4628 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4629 log("isMobileOk: X default || hipri is provisioning result=" + result); 4630 return result; 4631 } 4632 4633 try { 4634 // Continue trying to connect until time has run out 4635 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 4636 4637 if (!mCs.isMobileDataStateTrackerReady()) { 4638 // Wait for MobileDataStateTracker to be ready. 4639 if (DBG) log("isMobileOk: mdst is not ready"); 4640 while(SystemClock.elapsedRealtime() < endTime) { 4641 if (mCs.isMobileDataStateTrackerReady()) { 4642 // Enable fail fast as we'll do retries here and use a 4643 // hipri connection so the default connection stays active. 4644 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 4645 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 4646 break; 4647 } 4648 sleep(POLLING_SLEEP_SEC); 4649 } 4650 } 4651 4652 log("isMobileOk: start hipri url=" + params.mUrl); 4653 4654 // First wait until we can start using hipri 4655 Binder binder = new Binder(); 4656 while(SystemClock.elapsedRealtime() < endTime) { 4657 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4658 Phone.FEATURE_ENABLE_HIPRI, binder); 4659 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 4660 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 4661 log("isMobileOk: hipri started"); 4662 break; 4663 } 4664 if (VDBG) log("isMobileOk: hipri not started yet"); 4665 result = CMP_RESULT_CODE_NO_CONNECTION; 4666 sleep(POLLING_SLEEP_SEC); 4667 } 4668 4669 // Continue trying to connect until time has run out 4670 while(SystemClock.elapsedRealtime() < endTime) { 4671 try { 4672 // Wait for hipri to connect. 4673 // TODO: Don't poll and handle situation where hipri fails 4674 // because default is retrying. See b/9569540 4675 NetworkInfo.State state = mCs 4676 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4677 if (state != NetworkInfo.State.CONNECTED) { 4678 if (true/*VDBG*/) { 4679 log("isMobileOk: not connected ni=" + 4680 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4681 } 4682 sleep(POLLING_SLEEP_SEC); 4683 result = CMP_RESULT_CODE_NO_CONNECTION; 4684 continue; 4685 } 4686 4687 // Hipri has started check if this is a provisioning url 4688 MobileDataStateTracker mdst = (MobileDataStateTracker) 4689 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4690 if (mdst.isProvisioningNetwork()) { 4691 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4692 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 4693 return result; 4694 } else { 4695 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 4696 } 4697 4698 // Get of the addresses associated with the url host. We need to use the 4699 // address otherwise HttpURLConnection object will use the name to get 4700 // the addresses and will try every address but that will bypass the 4701 // route to host we setup and the connection could succeed as the default 4702 // interface might be connected to the internet via wifi or other interface. 4703 InetAddress[] addresses; 4704 try { 4705 addresses = InetAddress.getAllByName(orgUri.getHost()); 4706 } catch (UnknownHostException e) { 4707 result = CMP_RESULT_CODE_NO_DNS; 4708 log("isMobileOk: X UnknownHostException result=" + result); 4709 return result; 4710 } 4711 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 4712 4713 // Get the type of addresses supported by this link 4714 LinkProperties lp = mCs.getLinkPropertiesForTypeInternal( 4715 ConnectivityManager.TYPE_MOBILE_HIPRI); 4716 boolean linkHasIpv4 = lp.hasIPv4Address(); 4717 boolean linkHasIpv6 = lp.hasIPv6Address(); 4718 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 4719 + " linkHasIpv6=" + linkHasIpv6); 4720 4721 final ArrayList<InetAddress> validAddresses = 4722 new ArrayList<InetAddress>(addresses.length); 4723 4724 for (InetAddress addr : addresses) { 4725 if (((addr instanceof Inet4Address) && linkHasIpv4) || 4726 ((addr instanceof Inet6Address) && linkHasIpv6)) { 4727 validAddresses.add(addr); 4728 } 4729 } 4730 4731 if (validAddresses.size() == 0) { 4732 return CMP_RESULT_CODE_NO_CONNECTION; 4733 } 4734 4735 int addrTried = 0; 4736 while (true) { 4737 // Loop through at most MAX_LOOPS valid addresses or until 4738 // we run out of time 4739 if (addrTried++ >= MAX_LOOPS) { 4740 log("isMobileOk: too many loops tried - giving up"); 4741 break; 4742 } 4743 if (SystemClock.elapsedRealtime() >= endTime) { 4744 log("isMobileOk: spend too much time - giving up"); 4745 break; 4746 } 4747 4748 InetAddress hostAddr = validAddresses.get(rand.nextInt( 4749 validAddresses.size())); 4750 4751 // Make a route to host so we check the specific interface. 4752 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 4753 hostAddr.getAddress(), null)) { 4754 // Wait a short time to be sure the route is established ?? 4755 log("isMobileOk:" 4756 + " wait to establish route to hostAddr=" + hostAddr); 4757 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 4758 } else { 4759 log("isMobileOk:" 4760 + " could not establish route to hostAddr=" + hostAddr); 4761 // Wait a short time before the next attempt 4762 sleep(NET_ERROR_SLEEP_SEC); 4763 continue; 4764 } 4765 4766 // Rewrite the url to have numeric address to use the specific route 4767 // using http for half the attempts and https for the other half. 4768 // Doing https first and http second as on a redirected walled garden 4769 // such as t-mobile uses we get a SocketTimeoutException: "SSL 4770 // handshake timed out" which we declare as 4771 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 4772 // having http second we will be using logic used for some time. 4773 URL newUrl; 4774 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 4775 newUrl = new URL(scheme, hostAddr.getHostAddress(), 4776 orgUri.getPath()); 4777 log("isMobileOk: newUrl=" + newUrl); 4778 4779 HttpURLConnection urlConn = null; 4780 try { 4781 // Open the connection set the request headers and get the response 4782 urlConn = (HttpURLConnection)newUrl.openConnection( 4783 java.net.Proxy.NO_PROXY); 4784 if (scheme.equals("https")) { 4785 ((HttpsURLConnection)urlConn).setHostnameVerifier( 4786 new CheckMpHostnameVerifier(orgUri)); 4787 } 4788 urlConn.setInstanceFollowRedirects(false); 4789 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 4790 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 4791 urlConn.setUseCaches(false); 4792 urlConn.setAllowUserInteraction(false); 4793 // Set the "Connection" to "Close" as by default "Keep-Alive" 4794 // is used which is useless in this case. 4795 urlConn.setRequestProperty("Connection", "close"); 4796 int responseCode = urlConn.getResponseCode(); 4797 4798 // For debug display the headers 4799 Map<String, List<String>> headers = urlConn.getHeaderFields(); 4800 log("isMobileOk: headers=" + headers); 4801 4802 // Close the connection 4803 urlConn.disconnect(); 4804 urlConn = null; 4805 4806 if (mTestingFailures) { 4807 // Pretend no connection, this tests using http and https 4808 result = CMP_RESULT_CODE_NO_CONNECTION; 4809 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 4810 continue; 4811 } 4812 4813 if (responseCode == 204) { 4814 // Return 4815 result = CMP_RESULT_CODE_CONNECTABLE; 4816 log("isMobileOk: X got expected responseCode=" + responseCode 4817 + " result=" + result); 4818 return result; 4819 } else { 4820 // Retry to be sure this was redirected, we've gotten 4821 // occasions where a server returned 200 even though 4822 // the device didn't have a "warm" sim. 4823 log("isMobileOk: not expected responseCode=" + responseCode); 4824 // TODO - it would be nice in the single-address case to do 4825 // another DNS resolve here, but flushing the cache is a bit 4826 // heavy-handed. 4827 result = CMP_RESULT_CODE_REDIRECTED; 4828 } 4829 } catch (Exception e) { 4830 log("isMobileOk: HttpURLConnection Exception" + e); 4831 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 4832 if (urlConn != null) { 4833 urlConn.disconnect(); 4834 urlConn = null; 4835 } 4836 sleep(NET_ERROR_SLEEP_SEC); 4837 continue; 4838 } 4839 } 4840 log("isMobileOk: X loops|timed out result=" + result); 4841 return result; 4842 } catch (Exception e) { 4843 log("isMobileOk: Exception e=" + e); 4844 continue; 4845 } 4846 } 4847 log("isMobileOk: timed out"); 4848 } finally { 4849 log("isMobileOk: F stop hipri"); 4850 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 4851 mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4852 Phone.FEATURE_ENABLE_HIPRI); 4853 4854 // Wait for hipri to disconnect. 4855 long endTime = SystemClock.elapsedRealtime() + 5000; 4856 4857 while(SystemClock.elapsedRealtime() < endTime) { 4858 NetworkInfo.State state = mCs 4859 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4860 if (state != NetworkInfo.State.DISCONNECTED) { 4861 if (VDBG) { 4862 log("isMobileOk: connected ni=" + 4863 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4864 } 4865 sleep(POLLING_SLEEP_SEC); 4866 continue; 4867 } 4868 } 4869 4870 log("isMobileOk: X result=" + result); 4871 } 4872 return result; 4873 } 4874 4875 @Override 4876 protected Integer doInBackground(Params... params) { 4877 return isMobileOk(params[0]); 4878 } 4879 4880 @Override 4881 protected void onPostExecute(Integer result) { 4882 log("onPostExecute: result=" + result); 4883 if ((mParams != null) && (mParams.mCb != null)) { 4884 mParams.mCb.onComplete(result); 4885 } 4886 } 4887 4888 private String inetAddressesToString(InetAddress[] addresses) { 4889 StringBuffer sb = new StringBuffer(); 4890 boolean firstTime = true; 4891 for(InetAddress addr : addresses) { 4892 if (firstTime) { 4893 firstTime = false; 4894 } else { 4895 sb.append(","); 4896 } 4897 sb.append(addr); 4898 } 4899 return sb.toString(); 4900 } 4901 4902 private void printNetworkInfo() { 4903 boolean hasIccCard = mTm.hasIccCard(); 4904 int simState = mTm.getSimState(); 4905 log("hasIccCard=" + hasIccCard 4906 + " simState=" + simState); 4907 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 4908 if (ni != null) { 4909 log("ni.length=" + ni.length); 4910 for (NetworkInfo netInfo: ni) { 4911 log("netInfo=" + netInfo.toString()); 4912 } 4913 } else { 4914 log("no network info ni=null"); 4915 } 4916 } 4917 4918 /** 4919 * Sleep for a few seconds then return. 4920 * @param seconds 4921 */ 4922 private static void sleep(int seconds) { 4923 long stopTime = System.nanoTime() + (seconds * 1000000000); 4924 long sleepTime; 4925 while ((sleepTime = stopTime - System.nanoTime()) > 0) { 4926 try { 4927 Thread.sleep(sleepTime / 1000000); 4928 } catch (InterruptedException ignored) { 4929 } 4930 } 4931 } 4932 4933 private static void log(String s) { 4934 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 4935 } 4936 } 4937 4938 // TODO: Move to ConnectivityManager and make public? 4939 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 4940 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 4941 4942 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 4943 @Override 4944 public void onReceive(Context context, Intent intent) { 4945 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 4946 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 4947 } 4948 } 4949 }; 4950 4951 private void handleMobileProvisioningAction(String url) { 4952 // Mark notification as not visible 4953 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4954 4955 // Check airplane mode 4956 boolean isAirplaneModeOn = Settings.System.getInt(mContext.getContentResolver(), 4957 Settings.Global.AIRPLANE_MODE_ON, 0) == 1; 4958 // If provisioning network and not in airplane mode handle as a special case, 4959 // otherwise launch browser with the intent directly. 4960 if (mIsProvisioningNetwork.get() && !isAirplaneModeOn) { 4961 if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch"); 4962 mIsProvisioningNetwork.set(false); 4963// mIsStartingProvisioning.set(true); 4964// MobileDataStateTracker mdst = (MobileDataStateTracker) 4965// mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4966 // Radio was disabled on CMP_RESULT_CODE_PROVISIONING_NETWORK, enable it here 4967// mdst.setRadio(true); 4968// mdst.setEnableFailFastMobileData(DctConstants.ENABLED); 4969// mdst.enableMobileProvisioning(url); 4970 } else { 4971 if (DBG) log("handleMobileProvisioningAction: not prov network"); 4972 mIsProvisioningNetwork.set(false); 4973 // Check for apps that can handle provisioning first 4974 Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP); 4975 provisioningIntent.addCategory(TelephonyIntents.CATEGORY_MCCMNC_PREFIX 4976 + mTelephonyManager.getSimOperator()); 4977 if (mContext.getPackageManager().resolveActivity(provisioningIntent, 0 /* flags */) 4978 != null) { 4979 provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4980 Intent.FLAG_ACTIVITY_NEW_TASK); 4981 mContext.startActivity(provisioningIntent); 4982 } else { 4983 // If no apps exist, use standard URL ACTION_VIEW method 4984 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 4985 Intent.CATEGORY_APP_BROWSER); 4986 newIntent.setData(Uri.parse(url)); 4987 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4988 Intent.FLAG_ACTIVITY_NEW_TASK); 4989 try { 4990 mContext.startActivity(newIntent); 4991 } catch (ActivityNotFoundException e) { 4992 loge("handleMobileProvisioningAction: startActivity failed" + e); 4993 } 4994 } 4995 } 4996 } 4997 4998 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 4999 private volatile boolean mIsNotificationVisible = false; 5000 5001 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 5002 String url) { 5003 if (DBG) { 5004 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 5005 + " extraInfo=" + extraInfo + " url=" + url); 5006 } 5007 5008 Resources r = Resources.getSystem(); 5009 NotificationManager notificationManager = (NotificationManager) mContext 5010 .getSystemService(Context.NOTIFICATION_SERVICE); 5011 5012 if (visible) { 5013 CharSequence title; 5014 CharSequence details; 5015 int icon; 5016 Intent intent; 5017 Notification notification = new Notification(); 5018 switch (networkType) { 5019 case ConnectivityManager.TYPE_WIFI: 5020 title = r.getString(R.string.wifi_available_sign_in, 0); 5021 details = r.getString(R.string.network_available_sign_in_detailed, 5022 extraInfo); 5023 icon = R.drawable.stat_notify_wifi_in_range; 5024 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 5025 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 5026 Intent.FLAG_ACTIVITY_NEW_TASK); 5027 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 5028 break; 5029 case ConnectivityManager.TYPE_MOBILE: 5030 case ConnectivityManager.TYPE_MOBILE_HIPRI: 5031 title = r.getString(R.string.network_available_sign_in, 0); 5032 // TODO: Change this to pull from NetworkInfo once a printable 5033 // name has been added to it 5034 details = mTelephonyManager.getNetworkOperatorName(); 5035 icon = R.drawable.stat_notify_rssi_in_range; 5036 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 5037 intent.putExtra("EXTRA_URL", url); 5038 intent.setFlags(0); 5039 notification.contentIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 5040 break; 5041 default: 5042 title = r.getString(R.string.network_available_sign_in, 0); 5043 details = r.getString(R.string.network_available_sign_in_detailed, 5044 extraInfo); 5045 icon = R.drawable.stat_notify_rssi_in_range; 5046 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 5047 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 5048 Intent.FLAG_ACTIVITY_NEW_TASK); 5049 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 5050 break; 5051 } 5052 5053 notification.when = 0; 5054 notification.icon = icon; 5055 notification.flags = Notification.FLAG_AUTO_CANCEL; 5056 notification.tickerText = title; 5057 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 5058 5059 try { 5060 notificationManager.notify(NOTIFICATION_ID, networkType, notification); 5061 } catch (NullPointerException npe) { 5062 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 5063 npe.printStackTrace(); 5064 } 5065 } else { 5066 try { 5067 notificationManager.cancel(NOTIFICATION_ID, networkType); 5068 } catch (NullPointerException npe) { 5069 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 5070 npe.printStackTrace(); 5071 } 5072 } 5073 mIsNotificationVisible = visible; 5074 } 5075 5076 /** Location to an updatable file listing carrier provisioning urls. 5077 * An example: 5078 * 5079 * <?xml version="1.0" encoding="utf-8"?> 5080 * <provisioningUrls> 5081 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 5082 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 5083 * </provisioningUrls> 5084 */ 5085 private static final String PROVISIONING_URL_PATH = 5086 "/data/misc/radio/provisioning_urls.xml"; 5087 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 5088 5089 /** XML tag for root element. */ 5090 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 5091 /** XML tag for individual url */ 5092 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 5093 /** XML tag for redirected url */ 5094 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 5095 /** XML attribute for mcc */ 5096 private static final String ATTR_MCC = "mcc"; 5097 /** XML attribute for mnc */ 5098 private static final String ATTR_MNC = "mnc"; 5099 5100 private static final int REDIRECTED_PROVISIONING = 1; 5101 private static final int PROVISIONING = 2; 5102 5103 private String getProvisioningUrlBaseFromFile(int type) { 5104 FileReader fileReader = null; 5105 XmlPullParser parser = null; 5106 Configuration config = mContext.getResources().getConfiguration(); 5107 String tagType; 5108 5109 switch (type) { 5110 case PROVISIONING: 5111 tagType = TAG_PROVISIONING_URL; 5112 break; 5113 case REDIRECTED_PROVISIONING: 5114 tagType = TAG_REDIRECTED_URL; 5115 break; 5116 default: 5117 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 5118 type); 5119 } 5120 5121 try { 5122 fileReader = new FileReader(mProvisioningUrlFile); 5123 parser = Xml.newPullParser(); 5124 parser.setInput(fileReader); 5125 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 5126 5127 while (true) { 5128 XmlUtils.nextElement(parser); 5129 5130 String element = parser.getName(); 5131 if (element == null) break; 5132 5133 if (element.equals(tagType)) { 5134 String mcc = parser.getAttributeValue(null, ATTR_MCC); 5135 try { 5136 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 5137 String mnc = parser.getAttributeValue(null, ATTR_MNC); 5138 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 5139 parser.next(); 5140 if (parser.getEventType() == XmlPullParser.TEXT) { 5141 return parser.getText(); 5142 } 5143 } 5144 } 5145 } catch (NumberFormatException e) { 5146 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 5147 } 5148 } 5149 } 5150 return null; 5151 } catch (FileNotFoundException e) { 5152 loge("Carrier Provisioning Urls file not found"); 5153 } catch (XmlPullParserException e) { 5154 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 5155 } catch (IOException e) { 5156 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 5157 } finally { 5158 if (fileReader != null) { 5159 try { 5160 fileReader.close(); 5161 } catch (IOException e) {} 5162 } 5163 } 5164 return null; 5165 } 5166 5167 @Override 5168 public String getMobileRedirectedProvisioningUrl() { 5169 enforceConnectivityInternalPermission(); 5170 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 5171 if (TextUtils.isEmpty(url)) { 5172 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 5173 } 5174 return url; 5175 } 5176 5177 @Override 5178 public String getMobileProvisioningUrl() { 5179 enforceConnectivityInternalPermission(); 5180 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 5181 if (TextUtils.isEmpty(url)) { 5182 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 5183 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 5184 } else { 5185 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 5186 } 5187 // populate the iccid, imei and phone number in the provisioning url. 5188 if (!TextUtils.isEmpty(url)) { 5189 String phoneNumber = mTelephonyManager.getLine1Number(); 5190 if (TextUtils.isEmpty(phoneNumber)) { 5191 phoneNumber = "0000000000"; 5192 } 5193 url = String.format(url, 5194 mTelephonyManager.getSimSerialNumber() /* ICCID */, 5195 mTelephonyManager.getDeviceId() /* IMEI */, 5196 phoneNumber /* Phone numer */); 5197 } 5198 5199 return url; 5200 } 5201 5202 @Override 5203 public void setProvisioningNotificationVisible(boolean visible, int networkType, 5204 String extraInfo, String url) { 5205 enforceConnectivityInternalPermission(); 5206 setProvNotificationVisible(visible, networkType, extraInfo, url); 5207 } 5208 5209 @Override 5210 public void setAirplaneMode(boolean enable) { 5211 enforceConnectivityInternalPermission(); 5212 final long ident = Binder.clearCallingIdentity(); 5213 try { 5214 final ContentResolver cr = mContext.getContentResolver(); 5215 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 5216 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 5217 intent.putExtra("state", enable); 5218 mContext.sendBroadcast(intent); 5219 } finally { 5220 Binder.restoreCallingIdentity(ident); 5221 } 5222 } 5223 5224 private void onUserStart(int userId) { 5225 synchronized(mVpns) { 5226 Vpn userVpn = mVpns.get(userId); 5227 if (userVpn != null) { 5228 loge("Starting user already has a VPN"); 5229 return; 5230 } 5231 userVpn = new Vpn(mContext, mVpnCallback, mNetd, this, userId); 5232 mVpns.put(userId, userVpn); 5233 userVpn.startMonitoring(mContext, mTrackerHandler); 5234 } 5235 } 5236 5237 private void onUserStop(int userId) { 5238 synchronized(mVpns) { 5239 Vpn userVpn = mVpns.get(userId); 5240 if (userVpn == null) { 5241 loge("Stopping user has no VPN"); 5242 return; 5243 } 5244 mVpns.delete(userId); 5245 } 5246 } 5247 5248 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 5249 @Override 5250 public void onReceive(Context context, Intent intent) { 5251 final String action = intent.getAction(); 5252 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 5253 if (userId == UserHandle.USER_NULL) return; 5254 5255 if (Intent.ACTION_USER_STARTING.equals(action)) { 5256 onUserStart(userId); 5257 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 5258 onUserStop(userId); 5259 } 5260 } 5261 }; 5262 5263 @Override 5264 public LinkQualityInfo getLinkQualityInfo(int networkType) { 5265 enforceAccessPermission(); 5266 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 5267 return mNetTrackers[networkType].getLinkQualityInfo(); 5268 } else { 5269 return null; 5270 } 5271 } 5272 5273 @Override 5274 public LinkQualityInfo getActiveLinkQualityInfo() { 5275 enforceAccessPermission(); 5276 if (isNetworkTypeValid(mActiveDefaultNetwork) && 5277 mNetTrackers[mActiveDefaultNetwork] != null) { 5278 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 5279 } else { 5280 return null; 5281 } 5282 } 5283 5284 @Override 5285 public LinkQualityInfo[] getAllLinkQualityInfo() { 5286 enforceAccessPermission(); 5287 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 5288 for (NetworkStateTracker tracker : mNetTrackers) { 5289 if (tracker != null) { 5290 LinkQualityInfo li = tracker.getLinkQualityInfo(); 5291 if (li != null) { 5292 result.add(li); 5293 } 5294 } 5295 } 5296 5297 return result.toArray(new LinkQualityInfo[result.size()]); 5298 } 5299 5300 /* Infrastructure for network sampling */ 5301 5302 private void handleNetworkSamplingTimeout() { 5303 5304 log("Sampling interval elapsed, updating statistics .."); 5305 5306 // initialize list of interfaces .. 5307 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 5308 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 5309 for (NetworkStateTracker tracker : mNetTrackers) { 5310 if (tracker != null) { 5311 String ifaceName = tracker.getNetworkInterfaceName(); 5312 if (ifaceName != null) { 5313 mapIfaceToSample.put(ifaceName, null); 5314 } 5315 } 5316 } 5317 5318 // Read samples for all interfaces 5319 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 5320 5321 // process samples for all networks 5322 for (NetworkStateTracker tracker : mNetTrackers) { 5323 if (tracker != null) { 5324 String ifaceName = tracker.getNetworkInterfaceName(); 5325 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 5326 if (ss != null) { 5327 // end the previous sampling cycle 5328 tracker.stopSampling(ss); 5329 // start a new sampling cycle .. 5330 tracker.startSampling(ss); 5331 } 5332 } 5333 } 5334 5335 log("Done."); 5336 5337 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 5338 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 5339 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 5340 5341 if (DBG) log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 5342 5343 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 5344 } 5345 5346 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 5347 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 5348 mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, wakeupTime, intent); 5349 } 5350 5351 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 5352 new HashMap<Messenger, NetworkFactoryInfo>(); 5353 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 5354 new HashMap<NetworkRequest, NetworkRequestInfo>(); 5355 5356 private static class NetworkFactoryInfo { 5357 public final String name; 5358 public final Messenger messenger; 5359 public final AsyncChannel asyncChannel; 5360 5361 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 5362 this.name = name; 5363 this.messenger = messenger; 5364 this.asyncChannel = asyncChannel; 5365 } 5366 } 5367 5368 private class NetworkRequestInfo implements IBinder.DeathRecipient { 5369 static final boolean REQUEST = true; 5370 static final boolean LISTEN = false; 5371 5372 final NetworkRequest request; 5373 IBinder mBinder; 5374 final int mPid; 5375 final int mUid; 5376 final Messenger messenger; 5377 final boolean isRequest; 5378 5379 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 5380 super(); 5381 messenger = m; 5382 request = r; 5383 mBinder = binder; 5384 mPid = getCallingPid(); 5385 mUid = getCallingUid(); 5386 this.isRequest = isRequest; 5387 5388 try { 5389 mBinder.linkToDeath(this, 0); 5390 } catch (RemoteException e) { 5391 binderDied(); 5392 } 5393 } 5394 5395 void unlinkDeathRecipient() { 5396 mBinder.unlinkToDeath(this, 0); 5397 } 5398 5399 public void binderDied() { 5400 log("ConnectivityService NetworkRequestInfo binderDied(" + 5401 request + ", " + mBinder + ")"); 5402 releaseNetworkRequest(request); 5403 } 5404 5405 public String toString() { 5406 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 5407 mPid + " for " + request; 5408 } 5409 } 5410 5411 @Override 5412 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 5413 Messenger messenger, int timeoutSec, IBinder binder, int legacyType) { 5414 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 5415 == false) { 5416 enforceConnectivityInternalPermission(); 5417 } else { 5418 enforceChangePermission(); 5419 } 5420 5421 if (timeoutSec < 0 || timeoutSec > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_SEC) { 5422 throw new IllegalArgumentException("Bad timeout specified"); 5423 } 5424 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 5425 networkCapabilities), legacyType, nextNetworkRequestId()); 5426 if (DBG) log("requestNetwork for " + networkRequest); 5427 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 5428 NetworkRequestInfo.REQUEST); 5429 5430 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 5431 if (timeoutSec > 0) { 5432 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 5433 nri), timeoutSec * 1000); 5434 } 5435 return networkRequest; 5436 } 5437 5438 @Override 5439 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 5440 PendingIntent operation) { 5441 // TODO 5442 return null; 5443 } 5444 5445 @Override 5446 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 5447 Messenger messenger, IBinder binder) { 5448 enforceAccessPermission(); 5449 5450 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 5451 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 5452 if (DBG) log("listenForNetwork for " + networkRequest); 5453 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 5454 NetworkRequestInfo.LISTEN); 5455 5456 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 5457 return networkRequest; 5458 } 5459 5460 @Override 5461 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 5462 PendingIntent operation) { 5463 } 5464 5465 @Override 5466 public void releaseNetworkRequest(NetworkRequest networkRequest) { 5467 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, 5468 networkRequest)); 5469 } 5470 5471 @Override 5472 public void registerNetworkFactory(Messenger messenger, String name) { 5473 enforceConnectivityInternalPermission(); 5474 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 5475 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 5476 } 5477 5478 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 5479 if (VDBG) log("Got NetworkFactory Messenger for " + nfi.name); 5480 mNetworkFactoryInfos.put(nfi.messenger, nfi); 5481 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 5482 } 5483 5484 @Override 5485 public void unregisterNetworkFactory(Messenger messenger) { 5486 enforceConnectivityInternalPermission(); 5487 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 5488 } 5489 5490 private void handleUnregisterNetworkFactory(Messenger messenger) { 5491 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 5492 if (nfi == null) { 5493 if (VDBG) log("Failed to find Messenger in unregisterNetworkFactory"); 5494 return; 5495 } 5496 if (VDBG) log("unregisterNetworkFactory for " + nfi.name); 5497 } 5498 5499 /** 5500 * NetworkAgentInfo supporting a request by requestId. 5501 * These have already been vetted (their Capabilities satisfy the request) 5502 * and the are the highest scored network available. 5503 * the are keyed off the Requests requestId. 5504 */ 5505 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 5506 new SparseArray<NetworkAgentInfo>(); 5507 5508 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 5509 new SparseArray<NetworkAgentInfo>(); 5510 5511 // NetworkAgentInfo keyed off its connecting messenger 5512 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 5513 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 5514 new HashMap<Messenger, NetworkAgentInfo>(); 5515 5516 private final NetworkRequest mDefaultRequest; 5517 5518 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 5519 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 5520 int currentScore) { 5521 enforceConnectivityInternalPermission(); 5522 5523 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), nextNetId(), 5524 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 5525 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler); 5526 if (VDBG) log("registerNetworkAgent " + nai); 5527 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 5528 } 5529 5530 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 5531 if (VDBG) log("Got NetworkAgent Messenger"); 5532 mNetworkAgentInfos.put(na.messenger, na); 5533 mNetworkForNetId.put(na.network.netId, na); 5534 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 5535 NetworkInfo networkInfo = na.networkInfo; 5536 na.networkInfo = null; 5537 updateNetworkInfo(na, networkInfo); 5538 } 5539 5540 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 5541 LinkProperties newLp = networkAgent.linkProperties; 5542 int netId = networkAgent.network.netId; 5543 5544 updateInterfaces(newLp, oldLp, netId); 5545 updateMtu(newLp, oldLp); 5546 // TODO - figure out what to do for clat 5547// for (LinkProperties lp : newLp.getStackedLinks()) { 5548// updateMtu(lp, null); 5549// } 5550 updateRoutes(newLp, oldLp, netId); 5551 updateDnses(newLp, oldLp, netId); 5552 updateClat(newLp, oldLp, networkAgent); 5553 } 5554 5555 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo na) { 5556 // Update 464xlat state. 5557 if (mClat.requiresClat(na)) { 5558 5559 // If the connection was previously using clat, but is not using it now, stop the clat 5560 // daemon. Normally, this happens automatically when the connection disconnects, but if 5561 // the disconnect is not reported, or if the connection's LinkProperties changed for 5562 // some other reason (e.g., handoff changes the IP addresses on the link), it would 5563 // still be running. If it's not running, then stopping it is a no-op. 5564 if (Nat464Xlat.isRunningClat(oldLp) && !Nat464Xlat.isRunningClat(newLp)) { 5565 mClat.stopClat(); 5566 } 5567 // If the link requires clat to be running, then start the daemon now. 5568 if (na.networkInfo.isConnected()) { 5569 mClat.startClat(na); 5570 } else { 5571 mClat.stopClat(); 5572 } 5573 } 5574 } 5575 5576 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 5577 CompareResult<String> interfaceDiff = new CompareResult<String>(); 5578 if (oldLp != null) { 5579 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 5580 } else if (newLp != null) { 5581 interfaceDiff.added = newLp.getAllInterfaceNames(); 5582 } 5583 for (String iface : interfaceDiff.added) { 5584 try { 5585 mNetd.addInterfaceToNetwork(iface, netId); 5586 } catch (Exception e) { 5587 loge("Exception adding interface: " + e); 5588 } 5589 } 5590 for (String iface : interfaceDiff.removed) { 5591 try { 5592 mNetd.removeInterfaceFromNetwork(iface, netId); 5593 } catch (Exception e) { 5594 loge("Exception removing interface: " + e); 5595 } 5596 } 5597 } 5598 5599 private void updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 5600 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 5601 if (oldLp != null) { 5602 routeDiff = oldLp.compareAllRoutes(newLp); 5603 } else if (newLp != null) { 5604 routeDiff.added = newLp.getAllRoutes(); 5605 } 5606 5607 // add routes before removing old in case it helps with continuous connectivity 5608 5609 // do this twice, adding non-nexthop routes first, then routes they are dependent on 5610 for (RouteInfo route : routeDiff.added) { 5611 if (route.hasGateway()) continue; 5612 try { 5613 mNetd.addRoute(netId, route); 5614 } catch (Exception e) { 5615 loge("Exception in addRoute for non-gateway: " + e); 5616 } 5617 } 5618 for (RouteInfo route : routeDiff.added) { 5619 if (route.hasGateway() == false) continue; 5620 try { 5621 mNetd.addRoute(netId, route); 5622 } catch (Exception e) { 5623 loge("Exception in addRoute for gateway: " + e); 5624 } 5625 } 5626 5627 for (RouteInfo route : routeDiff.removed) { 5628 try { 5629 mNetd.removeRoute(netId, route); 5630 } catch (Exception e) { 5631 loge("Exception in removeRoute: " + e); 5632 } 5633 } 5634 } 5635 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId) { 5636 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 5637 Collection<InetAddress> dnses = newLp.getDnsServers(); 5638 if (dnses.size() == 0 && mDefaultDns != null) { 5639 dnses = new ArrayList(); 5640 dnses.add(mDefaultDns); 5641 if (DBG) { 5642 loge("no dns provided for netId " + netId + ", so using defaults"); 5643 } 5644 } 5645 try { 5646 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 5647 newLp.getDomains()); 5648 } catch (Exception e) { 5649 loge("Exception in setDnsServersForNetwork: " + e); 5650 } 5651 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 5652 if (defaultNai != null && defaultNai.network.netId == netId) { 5653 setDefaultDnsSystemProperties(dnses); 5654 } 5655 } 5656 } 5657 5658 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 5659 int last = 0; 5660 for (InetAddress dns : dnses) { 5661 ++last; 5662 String key = "net.dns" + last; 5663 String value = dns.getHostAddress(); 5664 SystemProperties.set(key, value); 5665 } 5666 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 5667 String key = "net.dns" + i; 5668 SystemProperties.set(key, ""); 5669 } 5670 mNumDnsEntries = last; 5671 } 5672 5673 5674 private void updateCapabilities(NetworkAgentInfo networkAgent, 5675 NetworkCapabilities networkCapabilities) { 5676 // TODO - what else here? Verify still satisfies everybody? 5677 // Check if satisfies somebody new? call callbacks? 5678 networkAgent.networkCapabilities = networkCapabilities; 5679 } 5680 5681 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 5682 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 5683 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 5684 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 5685 networkRequest); 5686 } 5687 } 5688 5689 private void callCallbackForRequest(NetworkRequestInfo nri, 5690 NetworkAgentInfo networkAgent, int notificationType) { 5691 if (nri.messenger == null) return; // Default request has no msgr 5692 Object o; 5693 int a1 = 0; 5694 int a2 = 0; 5695 switch (notificationType) { 5696 case ConnectivityManager.CALLBACK_LOSING: 5697 a1 = 30; // TODO - read this from NetworkMonitor 5698 // fall through 5699 case ConnectivityManager.CALLBACK_PRECHECK: 5700 case ConnectivityManager.CALLBACK_AVAILABLE: 5701 case ConnectivityManager.CALLBACK_LOST: 5702 case ConnectivityManager.CALLBACK_CAP_CHANGED: 5703 case ConnectivityManager.CALLBACK_IP_CHANGED: { 5704 o = new NetworkRequest(nri.request); 5705 a2 = networkAgent.network.netId; 5706 break; 5707 } 5708 case ConnectivityManager.CALLBACK_UNAVAIL: 5709 case ConnectivityManager.CALLBACK_RELEASED: { 5710 o = new NetworkRequest(nri.request); 5711 break; 5712 } 5713 default: { 5714 loge("Unknown notificationType " + notificationType); 5715 return; 5716 } 5717 } 5718 Message msg = Message.obtain(); 5719 msg.arg1 = a1; 5720 msg.arg2 = a2; 5721 msg.obj = o; 5722 msg.what = notificationType; 5723 try { 5724 if (VDBG) log("sending notification " + notificationType + " for " + nri.request); 5725 nri.messenger.send(msg); 5726 } catch (RemoteException e) { 5727 // may occur naturally in the race of binder death. 5728 loge("RemoteException caught trying to send a callback msg for " + nri.request); 5729 } 5730 } 5731 5732 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 5733 if (oldNetwork == null) { 5734 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 5735 return; 5736 } 5737 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 5738 if (DBG) { 5739 if (oldNetwork.networkRequests.size() != 0) { 5740 loge("Dead network still had " + oldNetwork.networkRequests.size() + " requests"); 5741 } 5742 } 5743 oldNetwork.asyncChannel.disconnect(); 5744 } 5745 5746 private void handleConnectionValidated(NetworkAgentInfo newNetwork) { 5747 if (newNetwork == null) { 5748 loge("Unknown NetworkAgentInfo in handleConnectionValidated"); 5749 return; 5750 } 5751 boolean keep = false; 5752 boolean isNewDefault = false; 5753 if (DBG) log("handleConnectionValidated for "+newNetwork.name()); 5754 // check if any NetworkRequest wants this NetworkAgent 5755 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 5756 if (VDBG) log(" new Network has: " + newNetwork.networkCapabilities); 5757 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 5758 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 5759 if (newNetwork == currentNetwork) { 5760 if (VDBG) log("Network " + newNetwork.name() + " was already satisfying" + 5761 " request " + nri.request.requestId + ". No change."); 5762 keep = true; 5763 continue; 5764 } 5765 5766 // check if it satisfies the NetworkCapabilities 5767 if (VDBG) log(" checking if request is satisfied: " + nri.request); 5768 if (nri.request.networkCapabilities.satisfiedByNetworkCapabilities( 5769 newNetwork.networkCapabilities)) { 5770 // next check if it's better than any current network we're using for 5771 // this request 5772 if (VDBG) { 5773 log("currentScore = " + 5774 (currentNetwork != null ? currentNetwork.currentScore : 0) + 5775 ", newScore = " + newNetwork.currentScore); 5776 } 5777 if (currentNetwork == null || 5778 currentNetwork.currentScore < newNetwork.currentScore) { 5779 if (currentNetwork != null) { 5780 if (VDBG) log(" accepting network in place of " + currentNetwork.name()); 5781 currentNetwork.networkRequests.remove(nri.request.requestId); 5782 currentNetwork.networkLingered.add(nri.request); 5783 affectedNetworks.add(currentNetwork); 5784 } else { 5785 if (VDBG) log(" accepting network in place of null"); 5786 } 5787 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 5788 newNetwork.addRequest(nri.request); 5789 int legacyType = nri.request.legacyType; 5790 if (legacyType != TYPE_NONE) { 5791 mLegacyTypeTracker.add(legacyType, newNetwork); 5792 } 5793 keep = true; 5794 // TODO - this could get expensive if we have alot of requests for this 5795 // network. Think about if there is a way to reduce this. Push 5796 // netid->request mapping to each factory? 5797 sendUpdatedScoreToFactories(nri.request, newNetwork.currentScore); 5798 if (mDefaultRequest.requestId == nri.request.requestId) { 5799 isNewDefault = true; 5800 updateActiveDefaultNetwork(newNetwork); 5801 if (newNetwork.linkProperties != null) { 5802 setDefaultDnsSystemProperties( 5803 newNetwork.linkProperties.getDnsServers()); 5804 } else { 5805 setDefaultDnsSystemProperties(new ArrayList<InetAddress>()); 5806 } 5807 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 5808 } 5809 } 5810 } 5811 } 5812 for (NetworkAgentInfo nai : affectedNetworks) { 5813 boolean teardown = true; 5814 for (int i = 0; i < nai.networkRequests.size(); i++) { 5815 NetworkRequest nr = nai.networkRequests.valueAt(i); 5816 try { 5817 if (mNetworkRequests.get(nr).isRequest) { 5818 teardown = false; 5819 } 5820 } catch (Exception e) { 5821 loge("Request " + nr + " not found in mNetworkRequests."); 5822 loge(" it came from request list of " + nai.name()); 5823 } 5824 } 5825 if (teardown) { 5826 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 5827 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 5828 } else { 5829 // not going to linger, so kill the list of linger networks.. only 5830 // notify them of linger if it happens as the result of gaining another, 5831 // but if they transition and old network stays up, don't tell them of linger 5832 // or very delayed loss 5833 nai.networkLingered.clear(); 5834 if (VDBG) log("Lingered for " + nai.name() + " cleared"); 5835 } 5836 } 5837 if (keep) { 5838 if (isNewDefault) { 5839 if (VDBG) log("Switching to new default network: " + newNetwork); 5840 setupDataActivityTracking(newNetwork); 5841 try { 5842 mNetd.setDefaultNetId(newNetwork.network.netId); 5843 } catch (Exception e) { 5844 loge("Exception setting default network :" + e); 5845 } 5846 if (newNetwork.equals(mNetworkForRequestId.get(mDefaultRequest.requestId))) { 5847 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 5848 } 5849 synchronized (ConnectivityService.this) { 5850 // have a new default network, release the transition wakelock in 5851 // a second if it's held. The second pause is to allow apps 5852 // to reconnect over the new network 5853 if (mNetTransitionWakeLock.isHeld()) { 5854 mHandler.sendMessageDelayed(mHandler.obtainMessage( 5855 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 5856 mNetTransitionWakeLockSerialNumber, 0), 5857 1000); 5858 } 5859 } 5860 5861 // this will cause us to come up initially as unconnected and switching 5862 // to connected after our normal pause unless somebody reports us as 5863 // really disconnected 5864 mDefaultInetConditionPublished = 0; 5865 mDefaultConnectionSequence++; 5866 mInetConditionChangeInFlight = false; 5867 // TODO - read the tcp buffer size config string from somewhere 5868 // updateNetworkSettings(); 5869 } 5870 // notify battery stats service about this network 5871 try { 5872 BatteryStatsService.getService().noteNetworkInterfaceType( 5873 newNetwork.linkProperties.getInterfaceName(), 5874 newNetwork.networkInfo.getType()); 5875 } catch (RemoteException e) { } 5876 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 5877 } else { 5878 if (DBG && newNetwork.networkRequests.size() != 0) { 5879 loge("tearing down network with live requests:"); 5880 for (int i=0; i < newNetwork.networkRequests.size(); i++) { 5881 loge(" " + newNetwork.networkRequests.valueAt(i)); 5882 } 5883 } 5884 if (VDBG) log("Validated network turns out to be unwanted. Tear it down."); 5885 newNetwork.asyncChannel.disconnect(); 5886 } 5887 } 5888 5889 5890 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 5891 NetworkInfo.State state = newInfo.getState(); 5892 NetworkInfo oldInfo = networkAgent.networkInfo; 5893 networkAgent.networkInfo = newInfo; 5894 5895 if (oldInfo != null && oldInfo.getState() == state) { 5896 if (VDBG) log("ignoring duplicate network state non-change"); 5897 return; 5898 } 5899 if (DBG) { 5900 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 5901 (oldInfo == null ? "null" : oldInfo.getState()) + 5902 " to " + state); 5903 } 5904 5905 if (state == NetworkInfo.State.CONNECTED) { 5906 try { 5907 // This is likely caused by the fact that this network already 5908 // exists. An example is when a network goes from CONNECTED to 5909 // CONNECTING and back (like wifi on DHCP renew). 5910 // TODO: keep track of which networks we've created, or ask netd 5911 // to tell us whether we've already created this network or not. 5912 mNetd.createNetwork(networkAgent.network.netId); 5913 } catch (Exception e) { 5914 loge("Error creating network " + networkAgent.network.netId + ": " 5915 + e.getMessage()); 5916 return; 5917 } 5918 5919 updateLinkProperties(networkAgent, null); 5920 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 5921 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 5922 } else if (state == NetworkInfo.State.DISCONNECTED || 5923 state == NetworkInfo.State.SUSPENDED) { 5924 networkAgent.asyncChannel.disconnect(); 5925 } 5926 } 5927 5928 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 5929 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 5930 5931 nai.currentScore = score; 5932 5933 // TODO - This will not do the right thing if this network is lowering 5934 // its score and has requests that can be served by other 5935 // currently-active networks, or if the network is increasing its 5936 // score and other networks have requests that can be better served 5937 // by this network. 5938 // 5939 // Really we want to see if any of our requests migrate to other 5940 // active/lingered networks and if any other requests migrate to us (depending 5941 // on increasing/decreasing currentScore. That's a bit of work and probably our 5942 // score checking/network allocation code needs to be modularized so we can understand 5943 // (see handleConnectionValided for an example). 5944 // 5945 // As a first order approx, lets just advertise the new score to factories. If 5946 // somebody can beat it they will nominate a network and our normal net replacement 5947 // code will fire. 5948 for (int i = 0; i < nai.networkRequests.size(); i++) { 5949 NetworkRequest nr = nai.networkRequests.valueAt(i); 5950 sendUpdatedScoreToFactories(nr, score); 5951 } 5952 } 5953 5954 // notify only this one new request of the current state 5955 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 5956 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 5957 // TODO - read state from monitor to decide what to send. 5958// if (nai.networkMonitor.isLingering()) { 5959// notifyType = NetworkCallbacks.LOSING; 5960// } else if (nai.networkMonitor.isEvaluating()) { 5961// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 5962// } 5963 callCallbackForRequest(nri, nai, notifyType); 5964 } 5965 5966 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 5967 if (connected) { 5968 NetworkInfo info = new NetworkInfo(nai.networkInfo); 5969 info.setType(type); 5970 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 5971 } else { 5972 NetworkInfo info = new NetworkInfo(nai.networkInfo); 5973 info.setType(type); 5974 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 5975 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 5976 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 5977 if (info.isFailover()) { 5978 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 5979 nai.networkInfo.setFailover(false); 5980 } 5981 if (info.getReason() != null) { 5982 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 5983 } 5984 if (info.getExtraInfo() != null) { 5985 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 5986 } 5987 NetworkAgentInfo newDefaultAgent = null; 5988 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 5989 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 5990 if (newDefaultAgent != null) { 5991 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 5992 newDefaultAgent.networkInfo); 5993 } else { 5994 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 5995 } 5996 } 5997 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 5998 mDefaultInetConditionPublished); 5999 final Intent immediateIntent = new Intent(intent); 6000 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 6001 sendStickyBroadcast(immediateIntent); 6002 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 6003 if (newDefaultAgent != null) { 6004 sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo, 6005 getConnectivityChangeDelay()); 6006 } 6007 } 6008 } 6009 6010 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 6011 if (VDBG) log("notifyType " + notifyType + " for " + networkAgent.name()); 6012 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 6013 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 6014 NetworkRequestInfo nri = mNetworkRequests.get(nr); 6015 if (VDBG) log(" sending notification for " + nr); 6016 callCallbackForRequest(nri, networkAgent, notifyType); 6017 } 6018 } 6019 6020 private LinkProperties getLinkPropertiesForTypeInternal(int networkType) { 6021 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 6022 return (nai != null) ? 6023 new LinkProperties(nai.linkProperties) : 6024 new LinkProperties(); 6025 } 6026 6027 private NetworkInfo getNetworkInfoForType(int networkType) { 6028 if (!mLegacyTypeTracker.isTypeSupported(networkType)) 6029 return null; 6030 6031 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 6032 if (nai != null) { 6033 NetworkInfo result = new NetworkInfo(nai.networkInfo); 6034 result.setType(networkType); 6035 return result; 6036 } else { 6037 return new NetworkInfo(networkType, 0, "Unknown", ""); 6038 } 6039 } 6040 6041 private NetworkCapabilities getNetworkCapabilitiesForType(int networkType) { 6042 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 6043 return (nai != null) ? 6044 new NetworkCapabilities(nai.networkCapabilities) : 6045 new NetworkCapabilities(); 6046 } 6047} 6048