ConnectivityService.java revision ff6ecccdc8c32129eed036793fef4a05becfe447
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server; 18 19import static android.Manifest.permission.MANAGE_NETWORK_POLICY; 20import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE; 21import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; 22import static android.net.ConnectivityManager.CONNECTIVITY_ACTION_IMMEDIATE; 23import static android.net.ConnectivityManager.TYPE_BLUETOOTH; 24import static android.net.ConnectivityManager.TYPE_DUMMY; 25import static android.net.ConnectivityManager.TYPE_MOBILE; 26import static android.net.ConnectivityManager.TYPE_MOBILE_MMS; 27import static android.net.ConnectivityManager.TYPE_MOBILE_SUPL; 28import static android.net.ConnectivityManager.TYPE_MOBILE_DUN; 29import static android.net.ConnectivityManager.TYPE_MOBILE_FOTA; 30import static android.net.ConnectivityManager.TYPE_MOBILE_IMS; 31import static android.net.ConnectivityManager.TYPE_MOBILE_CBS; 32import static android.net.ConnectivityManager.TYPE_MOBILE_IA; 33import static android.net.ConnectivityManager.TYPE_MOBILE_HIPRI; 34import static android.net.ConnectivityManager.TYPE_NONE; 35import static android.net.ConnectivityManager.TYPE_WIFI; 36import static android.net.ConnectivityManager.TYPE_WIMAX; 37import static android.net.ConnectivityManager.TYPE_PROXY; 38import static android.net.ConnectivityManager.getNetworkTypeName; 39import static android.net.ConnectivityManager.isNetworkTypeValid; 40import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 41import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 42 43import android.app.AlarmManager; 44import android.app.AppOpsManager; 45import android.app.Notification; 46import android.app.NotificationManager; 47import android.app.PendingIntent; 48import android.content.ActivityNotFoundException; 49import android.content.BroadcastReceiver; 50import android.content.ContentResolver; 51import android.content.Context; 52import android.content.ContextWrapper; 53import android.content.Intent; 54import android.content.IntentFilter; 55import android.content.pm.ApplicationInfo; 56import android.content.pm.PackageManager; 57import android.content.pm.PackageManager.NameNotFoundException; 58import android.content.res.Configuration; 59import android.content.res.Resources; 60import android.database.ContentObserver; 61import android.net.CaptivePortalTracker; 62import android.net.ConnectivityManager; 63import android.net.IConnectivityManager; 64import android.net.INetworkManagementEventObserver; 65import android.net.INetworkPolicyListener; 66import android.net.INetworkPolicyManager; 67import android.net.INetworkStatsService; 68import android.net.LinkAddress; 69import android.net.LinkProperties; 70import android.net.LinkProperties.CompareResult; 71import android.net.LinkQualityInfo; 72import android.net.MobileDataStateTracker; 73import android.net.Network; 74import android.net.NetworkAgent; 75import android.net.NetworkCapabilities; 76import android.net.NetworkConfig; 77import android.net.NetworkInfo; 78import android.net.NetworkInfo.DetailedState; 79import android.net.NetworkFactory; 80import android.net.NetworkQuotaInfo; 81import android.net.NetworkRequest; 82import android.net.NetworkState; 83import android.net.NetworkStateTracker; 84import android.net.NetworkUtils; 85import android.net.Proxy; 86import android.net.ProxyDataTracker; 87import android.net.ProxyInfo; 88import android.net.RouteInfo; 89import android.net.SamplingDataTracker; 90import android.net.Uri; 91import android.net.wimax.WimaxManagerConstants; 92import android.os.AsyncTask; 93import android.os.Binder; 94import android.os.Build; 95import android.os.FileUtils; 96import android.os.Handler; 97import android.os.HandlerThread; 98import android.os.IBinder; 99import android.os.INetworkManagementService; 100import android.os.Looper; 101import android.os.Message; 102import android.os.Messenger; 103import android.os.ParcelFileDescriptor; 104import android.os.PowerManager; 105import android.os.Process; 106import android.os.RemoteException; 107import android.os.ServiceManager; 108import android.os.SystemClock; 109import android.os.SystemProperties; 110import android.os.UserHandle; 111import android.os.UserManager; 112import android.provider.Settings; 113import android.security.Credentials; 114import android.security.KeyStore; 115import android.telephony.TelephonyManager; 116import android.text.TextUtils; 117import android.util.Slog; 118import android.util.SparseArray; 119import android.util.SparseIntArray; 120import android.util.Xml; 121 122import com.android.internal.R; 123import com.android.internal.annotations.GuardedBy; 124import com.android.internal.net.LegacyVpnInfo; 125import com.android.internal.net.VpnConfig; 126import com.android.internal.net.VpnProfile; 127import com.android.internal.telephony.DctConstants; 128import com.android.internal.telephony.Phone; 129import com.android.internal.telephony.PhoneConstants; 130import com.android.internal.telephony.TelephonyIntents; 131import com.android.internal.util.AsyncChannel; 132import com.android.internal.util.IndentingPrintWriter; 133import com.android.internal.util.XmlUtils; 134import com.android.server.am.BatteryStatsService; 135import com.android.server.connectivity.DataConnectionStats; 136import com.android.server.connectivity.Nat464Xlat; 137import com.android.server.connectivity.NetworkAgentInfo; 138import com.android.server.connectivity.NetworkMonitor; 139import com.android.server.connectivity.PacManager; 140import com.android.server.connectivity.Tethering; 141import com.android.server.connectivity.Vpn; 142import com.android.server.net.BaseNetworkObserver; 143import com.android.server.net.LockdownVpnTracker; 144import com.google.android.collect.Lists; 145import com.google.android.collect.Sets; 146 147import dalvik.system.DexClassLoader; 148 149import org.xmlpull.v1.XmlPullParser; 150import org.xmlpull.v1.XmlPullParserException; 151 152import java.io.File; 153import java.io.FileDescriptor; 154import java.io.FileNotFoundException; 155import java.io.FileReader; 156import java.io.IOException; 157import java.io.PrintWriter; 158import java.lang.reflect.Constructor; 159import java.net.HttpURLConnection; 160import java.net.Inet4Address; 161import java.net.Inet6Address; 162import java.net.InetAddress; 163import java.net.URL; 164import java.net.UnknownHostException; 165import java.util.ArrayList; 166import java.util.Arrays; 167import java.util.Collection; 168import java.util.GregorianCalendar; 169import java.util.HashMap; 170import java.util.HashSet; 171import java.util.List; 172import java.util.Map; 173import java.util.Random; 174import java.util.concurrent.atomic.AtomicBoolean; 175import java.util.concurrent.atomic.AtomicInteger; 176 177import javax.net.ssl.HostnameVerifier; 178import javax.net.ssl.HttpsURLConnection; 179import javax.net.ssl.SSLSession; 180 181import static android.net.ConnectivityManager.INVALID_NET_ID; 182 183/** 184 * @hide 185 */ 186public class ConnectivityService extends IConnectivityManager.Stub { 187 private static final String TAG = "ConnectivityService"; 188 189 private static final boolean DBG = true; 190 private static final boolean VDBG = true; // STOPSHIP 191 192 // network sampling debugging 193 private static final boolean SAMPLE_DBG = false; 194 195 private static final boolean LOGD_RULES = false; 196 197 // TODO: create better separation between radio types and network types 198 199 // how long to wait before switching back to a radio's default network 200 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 201 // system property that can override the above value 202 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 203 "android.telephony.apn-restore"; 204 205 // Default value if FAIL_FAST_TIME_MS is not set 206 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 207 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 208 private static final String FAIL_FAST_TIME_MS = 209 "persist.radio.fail_fast_time_ms"; 210 211 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 212 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 213 214 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 215 216 private PendingIntent mSampleIntervalElapsedIntent; 217 218 // Set network sampling interval at 12 minutes, this way, even if the timers get 219 // aggregated, it will fire at around 15 minutes, which should allow us to 220 // aggregate this timer with other timers (specially the socket keep alive timers) 221 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 12 * 60); 222 223 // start network sampling a minute after booting ... 224 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 60); 225 226 AlarmManager mAlarmManager; 227 228 // used in recursive route setting to add gateways for the host for which 229 // a host route was requested. 230 private static final int MAX_HOSTROUTE_CYCLE_COUNT = 10; 231 232 private Tethering mTethering; 233 234 private KeyStore mKeyStore; 235 236 @GuardedBy("mVpns") 237 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 238 private VpnCallback mVpnCallback = new VpnCallback(); 239 240 private boolean mLockdownEnabled; 241 private LockdownVpnTracker mLockdownTracker; 242 243 private Nat464Xlat mClat; 244 245 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 246 private Object mRulesLock = new Object(); 247 /** Currently active network rules by UID. */ 248 private SparseIntArray mUidRules = new SparseIntArray(); 249 /** Set of ifaces that are costly. */ 250 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 251 252 /** 253 * Sometimes we want to refer to the individual network state 254 * trackers separately, and sometimes we just want to treat them 255 * abstractly. 256 */ 257 private NetworkStateTracker mNetTrackers[]; 258 259 /* 260 * Handles captive portal check on a network. 261 * Only set if device has {@link PackageManager#FEATURE_WIFI}. 262 */ 263 private CaptivePortalTracker mCaptivePortalTracker; 264 265 /** 266 * The link properties that define the current links 267 */ 268 private LinkProperties mCurrentLinkProperties[]; 269 270 /** 271 * A per Net list of the PID's that requested access to the net 272 * used both as a refcount and for per-PID DNS selection 273 */ 274 private List<Integer> mNetRequestersPids[]; 275 276 // priority order of the nettrackers 277 // (excluding dynamically set mNetworkPreference) 278 // TODO - move mNetworkTypePreference into this 279 private int[] mPriorityList; 280 281 private Context mContext; 282 private int mNetworkPreference; 283 private int mActiveDefaultNetwork = -1; 284 // 0 is full bad, 100 is full good 285 private int mDefaultInetCondition = 0; 286 private int mDefaultInetConditionPublished = 0; 287 private boolean mInetConditionChangeInFlight = false; 288 private int mDefaultConnectionSequence = 0; 289 290 private Object mDnsLock = new Object(); 291 private int mNumDnsEntries; 292 293 private boolean mTestMode; 294 private static ConnectivityService sServiceInstance; 295 296 private INetworkManagementService mNetd; 297 private INetworkPolicyManager mPolicyManager; 298 299 private static final int ENABLED = 1; 300 private static final int DISABLED = 0; 301 302 private static final boolean ADD = true; 303 private static final boolean REMOVE = false; 304 305 private static final boolean TO_DEFAULT_TABLE = true; 306 private static final boolean TO_SECONDARY_TABLE = false; 307 308 private static final boolean EXEMPT = true; 309 private static final boolean UNEXEMPT = false; 310 311 /** 312 * used internally as a delayed event to make us switch back to the 313 * default network 314 */ 315 private static final int EVENT_RESTORE_DEFAULT_NETWORK = 1; 316 317 /** 318 * used internally to change our mobile data enabled flag 319 */ 320 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 321 322 /** 323 * used internally to synchronize inet condition reports 324 * arg1 = networkType 325 * arg2 = condition (0 bad, 100 good) 326 */ 327 private static final int EVENT_INET_CONDITION_CHANGE = 4; 328 329 /** 330 * used internally to mark the end of inet condition hold periods 331 * arg1 = networkType 332 */ 333 private static final int EVENT_INET_CONDITION_HOLD_END = 5; 334 335 /** 336 * used internally to clear a wakelock when transitioning 337 * from one net to another. Clear happens when we get a new 338 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 339 * after a timeout if no network is found (typically 1 min). 340 */ 341 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 342 343 /** 344 * used internally to reload global proxy settings 345 */ 346 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 347 348 /** 349 * used internally to set external dependency met/unmet 350 * arg1 = ENABLED (met) or DISABLED (unmet) 351 * arg2 = NetworkType 352 */ 353 private static final int EVENT_SET_DEPENDENCY_MET = 10; 354 355 /** 356 * used internally to send a sticky broadcast delayed. 357 */ 358 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 359 360 /** 361 * Used internally to 362 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 363 */ 364 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 365 366 private static final int EVENT_VPN_STATE_CHANGED = 13; 367 368 /** 369 * Used internally to disable fail fast of mobile data 370 */ 371 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 372 373 /** 374 * used internally to indicate that data sampling interval is up 375 */ 376 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 377 378 /** 379 * PAC manager has received new port. 380 */ 381 private static final int EVENT_PROXY_HAS_CHANGED = 16; 382 383 /** 384 * used internally when registering NetworkFactories 385 * obj = NetworkFactoryInfo 386 */ 387 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 388 389 /** 390 * used internally when registering NetworkAgents 391 * obj = Messenger 392 */ 393 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 394 395 /** 396 * used to add a network request 397 * includes a NetworkRequestInfo 398 */ 399 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 400 401 /** 402 * indicates a timeout period is over - check if we had a network yet or not 403 * and if not, call the timeout calback (but leave the request live until they 404 * cancel it. 405 * includes a NetworkRequestInfo 406 */ 407 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 408 409 /** 410 * used to add a network listener - no request 411 * includes a NetworkRequestInfo 412 */ 413 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 414 415 /** 416 * used to remove a network request, either a listener or a real request 417 * arg1 = UID of caller 418 * obj = NetworkRequest 419 */ 420 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 421 422 /** 423 * used internally when registering NetworkFactories 424 * obj = Messenger 425 */ 426 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 427 428 /** 429 * used internally to expire a wakelock when transitioning 430 * from one net to another. Expire happens when we fail to find 431 * a new network (typically after 1 minute) - 432 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 433 * a replacement network. 434 */ 435 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 436 437 438 /** Handler used for internal events. */ 439 final private InternalHandler mHandler; 440 /** Handler used for incoming {@link NetworkStateTracker} events. */ 441 final private NetworkStateTrackerHandler mTrackerHandler; 442 443 // list of DeathRecipients used to make sure features are turned off when 444 // a process dies 445 private List<FeatureUser> mFeatureUsers; 446 447 private boolean mSystemReady; 448 private Intent mInitialBroadcast; 449 450 private PowerManager.WakeLock mNetTransitionWakeLock; 451 private String mNetTransitionWakeLockCausedBy = ""; 452 private int mNetTransitionWakeLockSerialNumber; 453 private int mNetTransitionWakeLockTimeout; 454 455 private InetAddress mDefaultDns; 456 457 // Lock for protecting access to mAddedRoutes and mExemptAddresses 458 private final Object mRoutesLock = new Object(); 459 460 // this collection is used to refcount the added routes - if there are none left 461 // it's time to remove the route from the route table 462 @GuardedBy("mRoutesLock") 463 private Collection<RouteInfo> mAddedRoutes = new ArrayList<RouteInfo>(); 464 465 // this collection corresponds to the entries of mAddedRoutes that have routing exemptions 466 // used to handle cleanup of exempt rules 467 @GuardedBy("mRoutesLock") 468 private Collection<LinkAddress> mExemptAddresses = new ArrayList<LinkAddress>(); 469 470 // used in DBG mode to track inet condition reports 471 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 472 private ArrayList mInetLog; 473 474 // track the current default http proxy - tell the world if we get a new one (real change) 475 private ProxyInfo mDefaultProxy = null; 476 private Object mProxyLock = new Object(); 477 private boolean mDefaultProxyDisabled = false; 478 479 // track the global proxy. 480 private ProxyInfo mGlobalProxy = null; 481 482 private PacManager mPacManager = null; 483 484 private SettingsObserver mSettingsObserver; 485 486 private AppOpsManager mAppOpsManager; 487 488 private UserManager mUserManager; 489 490 NetworkConfig[] mNetConfigs; 491 int mNetworksDefined; 492 493 private static class RadioAttributes { 494 public int mSimultaneity; 495 public int mType; 496 public RadioAttributes(String init) { 497 String fragments[] = init.split(","); 498 mType = Integer.parseInt(fragments[0]); 499 mSimultaneity = Integer.parseInt(fragments[1]); 500 } 501 } 502 RadioAttributes[] mRadioAttributes; 503 504 // the set of network types that can only be enabled by system/sig apps 505 List mProtectedNetworks; 506 507 private DataConnectionStats mDataConnectionStats; 508 509 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 510 511 TelephonyManager mTelephonyManager; 512 513 // sequence number for Networks 514 private final static int MIN_NET_ID = 10; // some reserved marks 515 private final static int MAX_NET_ID = 65535; 516 private int mNextNetId = MIN_NET_ID; 517 518 // sequence number of NetworkRequests 519 private int mNextNetworkRequestId = 1; 520 521 private static final int UID_UNUSED = -1; 522 523 /** 524 * Implements support for the legacy "one network per network type" model. 525 * 526 * We used to have a static array of NetworkStateTrackers, one for each 527 * network type, but that doesn't work any more now that we can have, 528 * for example, more that one wifi network. This class stores all the 529 * NetworkAgentInfo objects that support a given type, but the legacy 530 * API will only see the first one. 531 * 532 * It serves two main purposes: 533 * 534 * 1. Provide information about "the network for a given type" (since this 535 * API only supports one). 536 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 537 * the first network for a given type changes, or if the default network 538 * changes. 539 */ 540 private class LegacyTypeTracker { 541 /** 542 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 543 * Each list holds references to all NetworkAgentInfos that are used to 544 * satisfy requests for that network type. 545 * 546 * This array is built out at startup such that an unsupported network 547 * doesn't get an ArrayList instance, making this a tristate: 548 * unsupported, supported but not active and active. 549 * 550 * The actual lists are populated when we scan the network types that 551 * are supported on this device. 552 */ 553 private ArrayList<NetworkAgentInfo> mTypeLists[]; 554 555 public LegacyTypeTracker() { 556 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 557 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 558 } 559 560 public void addSupportedType(int type) { 561 if (mTypeLists[type] != null) { 562 throw new IllegalStateException( 563 "legacy list for type " + type + "already initialized"); 564 } 565 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 566 } 567 568 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 569 return mNetworkForRequestId.get(mDefaultRequest.requestId) == nai; 570 } 571 572 public boolean isTypeSupported(int type) { 573 return isNetworkTypeValid(type) && mTypeLists[type] != null; 574 } 575 576 public NetworkAgentInfo getNetworkForType(int type) { 577 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 578 return mTypeLists[type].get(0); 579 } else { 580 return null; 581 } 582 } 583 584 public void add(int type, NetworkAgentInfo nai) { 585 if (!isTypeSupported(type)) { 586 return; // Invalid network type. 587 } 588 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 589 590 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 591 if (list.contains(nai)) { 592 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 593 return; 594 } 595 596 if (list.isEmpty() || isDefaultNetwork(nai)) { 597 if (VDBG) log("Sending connected broadcast for type " + type + 598 "isDefaultNetwork=" + isDefaultNetwork(nai)); 599 sendLegacyNetworkBroadcast(nai, true, type); 600 } 601 list.add(nai); 602 } 603 604 public void remove(NetworkAgentInfo nai) { 605 if (VDBG) log("Removing agent " + nai); 606 for (int type = 0; type < mTypeLists.length; type++) { 607 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 608 if (list == null || list.isEmpty()) { 609 continue; 610 } 611 612 boolean wasFirstNetwork = false; 613 if (list.get(0).equals(nai)) { 614 // This network was the first in the list. Send broadcast. 615 wasFirstNetwork = true; 616 } 617 list.remove(nai); 618 619 if (wasFirstNetwork || isDefaultNetwork(nai)) { 620 if (VDBG) log("Sending disconnected broadcast for type " + type + 621 "isDefaultNetwork=" + isDefaultNetwork(nai)); 622 sendLegacyNetworkBroadcast(nai, false, type); 623 } 624 625 if (!list.isEmpty() && wasFirstNetwork) { 626 if (VDBG) log("Other network available for type " + type + 627 ", sending connected broadcast"); 628 sendLegacyNetworkBroadcast(list.get(0), false, type); 629 } 630 } 631 } 632 } 633 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 634 635 public ConnectivityService(Context context, INetworkManagementService netd, 636 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 637 // Currently, omitting a NetworkFactory will create one internally 638 // TODO: create here when we have cleaner WiMAX support 639 this(context, netd, statsService, policyManager, null); 640 } 641 642 public ConnectivityService(Context context, INetworkManagementService netManager, 643 INetworkStatsService statsService, INetworkPolicyManager policyManager, 644 NetworkFactory netFactory) { 645 if (DBG) log("ConnectivityService starting up"); 646 647 NetworkCapabilities netCap = new NetworkCapabilities(); 648 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 649 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 650 mDefaultRequest = new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 651 NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(), 652 NetworkRequestInfo.REQUEST); 653 mNetworkRequests.put(mDefaultRequest, nri); 654 655 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 656 handlerThread.start(); 657 mHandler = new InternalHandler(handlerThread.getLooper()); 658 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 659 660 if (netFactory == null) { 661 netFactory = new DefaultNetworkFactory(context, mTrackerHandler); 662 } 663 664 // setup our unique device name 665 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 666 String id = Settings.Secure.getString(context.getContentResolver(), 667 Settings.Secure.ANDROID_ID); 668 if (id != null && id.length() > 0) { 669 String name = new String("android-").concat(id); 670 SystemProperties.set("net.hostname", name); 671 } 672 } 673 674 // read our default dns server ip 675 String dns = Settings.Global.getString(context.getContentResolver(), 676 Settings.Global.DEFAULT_DNS_SERVER); 677 if (dns == null || dns.length() == 0) { 678 dns = context.getResources().getString( 679 com.android.internal.R.string.config_default_dns_server); 680 } 681 try { 682 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 683 } catch (IllegalArgumentException e) { 684 loge("Error setting defaultDns using " + dns); 685 } 686 687 mContext = checkNotNull(context, "missing Context"); 688 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 689 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 690 mKeyStore = KeyStore.getInstance(); 691 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 692 693 try { 694 mPolicyManager.registerListener(mPolicyListener); 695 } catch (RemoteException e) { 696 // ouch, no rules updates means some processes may never get network 697 loge("unable to register INetworkPolicyListener" + e.toString()); 698 } 699 700 final PowerManager powerManager = (PowerManager) context.getSystemService( 701 Context.POWER_SERVICE); 702 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 703 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 704 com.android.internal.R.integer.config_networkTransitionTimeout); 705 706 mNetTrackers = new NetworkStateTracker[ 707 ConnectivityManager.MAX_NETWORK_TYPE+1]; 708 mCurrentLinkProperties = new LinkProperties[ConnectivityManager.MAX_NETWORK_TYPE+1]; 709 710 mRadioAttributes = new RadioAttributes[ConnectivityManager.MAX_RADIO_TYPE+1]; 711 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 712 713 // Load device network attributes from resources 714 String[] raStrings = context.getResources().getStringArray( 715 com.android.internal.R.array.radioAttributes); 716 for (String raString : raStrings) { 717 RadioAttributes r = new RadioAttributes(raString); 718 if (VDBG) log("raString=" + raString + " r=" + r); 719 if (r.mType > ConnectivityManager.MAX_RADIO_TYPE) { 720 loge("Error in radioAttributes - ignoring attempt to define type " + r.mType); 721 continue; 722 } 723 if (mRadioAttributes[r.mType] != null) { 724 loge("Error in radioAttributes - ignoring attempt to redefine type " + 725 r.mType); 726 continue; 727 } 728 mRadioAttributes[r.mType] = r; 729 } 730 731 // TODO: What is the "correct" way to do determine if this is a wifi only device? 732 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 733 log("wifiOnly=" + wifiOnly); 734 String[] naStrings = context.getResources().getStringArray( 735 com.android.internal.R.array.networkAttributes); 736 for (String naString : naStrings) { 737 try { 738 NetworkConfig n = new NetworkConfig(naString); 739 if (VDBG) log("naString=" + naString + " config=" + n); 740 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 741 loge("Error in networkAttributes - ignoring attempt to define type " + 742 n.type); 743 continue; 744 } 745 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 746 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 747 n.type); 748 continue; 749 } 750 if (mNetConfigs[n.type] != null) { 751 loge("Error in networkAttributes - ignoring attempt to redefine type " + 752 n.type); 753 continue; 754 } 755 if (mRadioAttributes[n.radio] == null) { 756 loge("Error in networkAttributes - ignoring attempt to use undefined " + 757 "radio " + n.radio + " in network type " + n.type); 758 continue; 759 } 760 mLegacyTypeTracker.addSupportedType(n.type); 761 762 mNetConfigs[n.type] = n; 763 mNetworksDefined++; 764 } catch(Exception e) { 765 // ignore it - leave the entry null 766 } 767 } 768 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 769 770 mProtectedNetworks = new ArrayList<Integer>(); 771 int[] protectedNetworks = context.getResources().getIntArray( 772 com.android.internal.R.array.config_protectedNetworks); 773 for (int p : protectedNetworks) { 774 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 775 mProtectedNetworks.add(p); 776 } else { 777 if (DBG) loge("Ignoring protectedNetwork " + p); 778 } 779 } 780 781 // high priority first 782 mPriorityList = new int[mNetworksDefined]; 783 { 784 int insertionPoint = mNetworksDefined-1; 785 int currentLowest = 0; 786 int nextLowest = 0; 787 while (insertionPoint > -1) { 788 for (NetworkConfig na : mNetConfigs) { 789 if (na == null) continue; 790 if (na.priority < currentLowest) continue; 791 if (na.priority > currentLowest) { 792 if (na.priority < nextLowest || nextLowest == 0) { 793 nextLowest = na.priority; 794 } 795 continue; 796 } 797 mPriorityList[insertionPoint--] = na.type; 798 } 799 currentLowest = nextLowest; 800 nextLowest = 0; 801 } 802 } 803 804 mNetRequestersPids = 805 (List<Integer> [])new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE+1]; 806 for (int i : mPriorityList) { 807 mNetRequestersPids[i] = new ArrayList<Integer>(); 808 } 809 810 mFeatureUsers = new ArrayList<FeatureUser>(); 811 812 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 813 && SystemProperties.get("ro.build.type").equals("eng"); 814 815 // Create and start trackers for hard-coded networks 816 for (int targetNetworkType : mPriorityList) { 817 final NetworkConfig config = mNetConfigs[targetNetworkType]; 818 final NetworkStateTracker tracker; 819 try { 820 tracker = netFactory.createTracker(targetNetworkType, config); 821 mNetTrackers[targetNetworkType] = tracker; 822 } catch (IllegalArgumentException e) { 823 Slog.e(TAG, "Problem creating " + getNetworkTypeName(targetNetworkType) 824 + " tracker: " + e); 825 continue; 826 } 827 828 tracker.startMonitoring(context, mTrackerHandler); 829 if (config.isDefault()) { 830 tracker.reconnect(); 831 } 832 } 833 834 mTethering = new Tethering(mContext, mNetd, statsService, this, mHandler.getLooper()); 835 836 //set up the listener for user state for creating user VPNs 837 IntentFilter intentFilter = new IntentFilter(); 838 intentFilter.addAction(Intent.ACTION_USER_STARTING); 839 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 840 mContext.registerReceiverAsUser( 841 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 842 mClat = new Nat464Xlat(mContext, mNetd, this, mTrackerHandler); 843 844 try { 845 mNetd.registerObserver(mTethering); 846 mNetd.registerObserver(mDataActivityObserver); 847 mNetd.registerObserver(mClat); 848 } catch (RemoteException e) { 849 loge("Error registering observer :" + e); 850 } 851 852 if (DBG) { 853 mInetLog = new ArrayList(); 854 } 855 856 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 857 mSettingsObserver.observe(mContext); 858 859 mDataConnectionStats = new DataConnectionStats(mContext); 860 mDataConnectionStats.startMonitoring(); 861 862 // start network sampling .. 863 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED, null); 864 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 865 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 866 867 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 868 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 869 870 IntentFilter filter = new IntentFilter(); 871 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 872 mContext.registerReceiver( 873 new BroadcastReceiver() { 874 @Override 875 public void onReceive(Context context, Intent intent) { 876 String action = intent.getAction(); 877 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 878 mHandler.sendMessage(mHandler.obtainMessage 879 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 880 } 881 } 882 }, 883 new IntentFilter(filter)); 884 885 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 886 887 filter = new IntentFilter(); 888 filter.addAction(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 889 mContext.registerReceiver(mProvisioningReceiver, filter); 890 891 mAppOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE); 892 893 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 894 } 895 896 private synchronized int nextNetworkRequestId() { 897 return mNextNetworkRequestId++; 898 } 899 900 private synchronized int nextNetId() { 901 int netId = mNextNetId; 902 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 903 return netId; 904 } 905 906 /** 907 * Factory that creates {@link NetworkStateTracker} instances using given 908 * {@link NetworkConfig}. 909 * 910 * TODO - this is obsolete and will be deleted. It's replaced by the 911 * registerNetworkFactory call and protocol. 912 * @Deprecated in favor of registerNetworkFactory dynamic bindings 913 */ 914 public interface NetworkFactory { 915 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config); 916 } 917 918 private static class DefaultNetworkFactory implements NetworkFactory { 919 private final Context mContext; 920 private final Handler mTrackerHandler; 921 922 public DefaultNetworkFactory(Context context, Handler trackerHandler) { 923 mContext = context; 924 mTrackerHandler = trackerHandler; 925 } 926 927 @Override 928 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config) { 929 switch (config.radio) { 930 case TYPE_WIMAX: 931 return makeWimaxStateTracker(mContext, mTrackerHandler); 932 case TYPE_PROXY: 933 return new ProxyDataTracker(); 934 default: 935 throw new IllegalArgumentException( 936 "Trying to create a NetworkStateTracker for an unknown radio type: " 937 + config.radio); 938 } 939 } 940 } 941 942 /** 943 * Loads external WiMAX library and registers as system service, returning a 944 * {@link NetworkStateTracker} for WiMAX. Caller is still responsible for 945 * invoking {@link NetworkStateTracker#startMonitoring(Context, Handler)}. 946 */ 947 private static NetworkStateTracker makeWimaxStateTracker( 948 Context context, Handler trackerHandler) { 949 // Initialize Wimax 950 DexClassLoader wimaxClassLoader; 951 Class wimaxStateTrackerClass = null; 952 Class wimaxServiceClass = null; 953 Class wimaxManagerClass; 954 String wimaxJarLocation; 955 String wimaxLibLocation; 956 String wimaxManagerClassName; 957 String wimaxServiceClassName; 958 String wimaxStateTrackerClassName; 959 960 NetworkStateTracker wimaxStateTracker = null; 961 962 boolean isWimaxEnabled = context.getResources().getBoolean( 963 com.android.internal.R.bool.config_wimaxEnabled); 964 965 if (isWimaxEnabled) { 966 try { 967 wimaxJarLocation = context.getResources().getString( 968 com.android.internal.R.string.config_wimaxServiceJarLocation); 969 wimaxLibLocation = context.getResources().getString( 970 com.android.internal.R.string.config_wimaxNativeLibLocation); 971 wimaxManagerClassName = context.getResources().getString( 972 com.android.internal.R.string.config_wimaxManagerClassname); 973 wimaxServiceClassName = context.getResources().getString( 974 com.android.internal.R.string.config_wimaxServiceClassname); 975 wimaxStateTrackerClassName = context.getResources().getString( 976 com.android.internal.R.string.config_wimaxStateTrackerClassname); 977 978 if (DBG) log("wimaxJarLocation: " + wimaxJarLocation); 979 wimaxClassLoader = new DexClassLoader(wimaxJarLocation, 980 new ContextWrapper(context).getCacheDir().getAbsolutePath(), 981 wimaxLibLocation, ClassLoader.getSystemClassLoader()); 982 983 try { 984 wimaxManagerClass = wimaxClassLoader.loadClass(wimaxManagerClassName); 985 wimaxStateTrackerClass = wimaxClassLoader.loadClass(wimaxStateTrackerClassName); 986 wimaxServiceClass = wimaxClassLoader.loadClass(wimaxServiceClassName); 987 } catch (ClassNotFoundException ex) { 988 loge("Exception finding Wimax classes: " + ex.toString()); 989 return null; 990 } 991 } catch(Resources.NotFoundException ex) { 992 loge("Wimax Resources does not exist!!! "); 993 return null; 994 } 995 996 try { 997 if (DBG) log("Starting Wimax Service... "); 998 999 Constructor wmxStTrkrConst = wimaxStateTrackerClass.getConstructor 1000 (new Class[] {Context.class, Handler.class}); 1001 wimaxStateTracker = (NetworkStateTracker) wmxStTrkrConst.newInstance( 1002 context, trackerHandler); 1003 1004 Constructor wmxSrvConst = wimaxServiceClass.getDeclaredConstructor 1005 (new Class[] {Context.class, wimaxStateTrackerClass}); 1006 wmxSrvConst.setAccessible(true); 1007 IBinder svcInvoker = (IBinder)wmxSrvConst.newInstance(context, wimaxStateTracker); 1008 wmxSrvConst.setAccessible(false); 1009 1010 ServiceManager.addService(WimaxManagerConstants.WIMAX_SERVICE, svcInvoker); 1011 1012 } catch(Exception ex) { 1013 loge("Exception creating Wimax classes: " + ex.toString()); 1014 return null; 1015 } 1016 } else { 1017 loge("Wimax is not enabled or not added to the network attributes!!! "); 1018 return null; 1019 } 1020 1021 return wimaxStateTracker; 1022 } 1023 1024 private int getConnectivityChangeDelay() { 1025 final ContentResolver cr = mContext.getContentResolver(); 1026 1027 /** Check system properties for the default value then use secure settings value, if any. */ 1028 int defaultDelay = SystemProperties.getInt( 1029 "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY, 1030 ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT); 1031 return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY, 1032 defaultDelay); 1033 } 1034 1035 private boolean teardown(NetworkStateTracker netTracker) { 1036 if (netTracker.teardown()) { 1037 netTracker.setTeardownRequested(true); 1038 return true; 1039 } else { 1040 return false; 1041 } 1042 } 1043 1044 /** 1045 * Check if UID should be blocked from using the network represented by the 1046 * given {@link NetworkStateTracker}. 1047 */ 1048 private boolean isNetworkBlocked(int networkType, int uid) { 1049 final boolean networkCostly; 1050 final int uidRules; 1051 1052 LinkProperties lp = getLinkPropertiesForType(networkType); 1053 final String iface = (lp == null ? "" : lp.getInterfaceName()); 1054 synchronized (mRulesLock) { 1055 networkCostly = mMeteredIfaces.contains(iface); 1056 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1057 } 1058 1059 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 1060 return true; 1061 } 1062 1063 // no restrictive rules; network is visible 1064 return false; 1065 } 1066 1067 /** 1068 * Return a filtered {@link NetworkInfo}, potentially marked 1069 * {@link DetailedState#BLOCKED} based on 1070 * {@link #isNetworkBlocked}. 1071 */ 1072 private NetworkInfo getFilteredNetworkInfo(int networkType, int uid) { 1073 NetworkInfo info = getNetworkInfoForType(networkType); 1074 return getFilteredNetworkInfo(info, networkType, uid); 1075 } 1076 1077 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, int networkType, int uid) { 1078 if (isNetworkBlocked(networkType, uid)) { 1079 // network is blocked; clone and override state 1080 info = new NetworkInfo(info); 1081 info.setDetailedState(DetailedState.BLOCKED, null, null); 1082 } 1083 if (mLockdownTracker != null) { 1084 info = mLockdownTracker.augmentNetworkInfo(info); 1085 } 1086 return info; 1087 } 1088 1089 /** 1090 * Return NetworkInfo for the active (i.e., connected) network interface. 1091 * It is assumed that at most one network is active at a time. If more 1092 * than one is active, it is indeterminate which will be returned. 1093 * @return the info for the active network, or {@code null} if none is 1094 * active 1095 */ 1096 @Override 1097 public NetworkInfo getActiveNetworkInfo() { 1098 enforceAccessPermission(); 1099 final int uid = Binder.getCallingUid(); 1100 return getNetworkInfo(mActiveDefaultNetwork, uid); 1101 } 1102 1103 // only called when the default request is satisfied 1104 private void updateActiveDefaultNetwork(NetworkAgentInfo nai) { 1105 if (nai != null) { 1106 mActiveDefaultNetwork = nai.networkInfo.getType(); 1107 } else { 1108 mActiveDefaultNetwork = TYPE_NONE; 1109 } 1110 } 1111 1112 /** 1113 * Find the first Provisioning network. 1114 * 1115 * @return NetworkInfo or null if none. 1116 */ 1117 private NetworkInfo getProvisioningNetworkInfo() { 1118 enforceAccessPermission(); 1119 1120 // Find the first Provisioning Network 1121 NetworkInfo provNi = null; 1122 for (NetworkInfo ni : getAllNetworkInfo()) { 1123 if (ni.isConnectedToProvisioningNetwork()) { 1124 provNi = ni; 1125 break; 1126 } 1127 } 1128 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 1129 return provNi; 1130 } 1131 1132 /** 1133 * Find the first Provisioning network or the ActiveDefaultNetwork 1134 * if there is no Provisioning network 1135 * 1136 * @return NetworkInfo or null if none. 1137 */ 1138 @Override 1139 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 1140 enforceAccessPermission(); 1141 1142 NetworkInfo provNi = getProvisioningNetworkInfo(); 1143 if (provNi == null) { 1144 final int uid = Binder.getCallingUid(); 1145 provNi = getNetworkInfo(mActiveDefaultNetwork, uid); 1146 } 1147 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 1148 return provNi; 1149 } 1150 1151 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1152 enforceAccessPermission(); 1153 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 1154 return getNetworkInfoForType(mActiveDefaultNetwork); 1155 } 1156 return null; 1157 } 1158 1159 @Override 1160 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1161 enforceConnectivityInternalPermission(); 1162 return getNetworkInfo(mActiveDefaultNetwork, uid); 1163 } 1164 1165 @Override 1166 public NetworkInfo getNetworkInfo(int networkType) { 1167 enforceAccessPermission(); 1168 final int uid = Binder.getCallingUid(); 1169 return getNetworkInfo(networkType, uid); 1170 } 1171 1172 private NetworkInfo getNetworkInfo(int networkType, int uid) { 1173 NetworkInfo info = null; 1174 if (isNetworkTypeValid(networkType)) { 1175 if (getNetworkInfoForType(networkType) != null) { 1176 info = getFilteredNetworkInfo(networkType, uid); 1177 } 1178 } 1179 return info; 1180 } 1181 1182 @Override 1183 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1184 enforceAccessPermission(); 1185 if (network == null) return null; 1186 1187 final int uid = Binder.getCallingUid(); 1188 NetworkAgentInfo nai = null; 1189 synchronized (mNetworkForNetId) { 1190 nai = mNetworkForNetId.get(network.netId); 1191 } 1192 if (nai == null) return null; 1193 synchronized (nai) { 1194 if (nai.networkInfo == null) return null; 1195 1196 return getFilteredNetworkInfo(nai.networkInfo, nai.networkInfo.getType(), uid); 1197 } 1198 } 1199 1200 @Override 1201 public NetworkInfo[] getAllNetworkInfo() { 1202 enforceAccessPermission(); 1203 final int uid = Binder.getCallingUid(); 1204 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1205 synchronized (mRulesLock) { 1206 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1207 networkType++) { 1208 if (getNetworkInfoForType(networkType) != null) { 1209 result.add(getFilteredNetworkInfo(networkType, uid)); 1210 } 1211 } 1212 } 1213 return result.toArray(new NetworkInfo[result.size()]); 1214 } 1215 1216 @Override 1217 public Network[] getAllNetworks() { 1218 enforceAccessPermission(); 1219 final ArrayList<Network> result = new ArrayList(); 1220 synchronized (mNetworkForNetId) { 1221 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1222 result.add(new Network(mNetworkForNetId.valueAt(i).network)); 1223 } 1224 } 1225 return result.toArray(new Network[result.size()]); 1226 } 1227 1228 @Override 1229 public boolean isNetworkSupported(int networkType) { 1230 enforceAccessPermission(); 1231 return (isNetworkTypeValid(networkType) && (getNetworkInfoForType(networkType) != null)); 1232 } 1233 1234 /** 1235 * Return LinkProperties for the active (i.e., connected) default 1236 * network interface. It is assumed that at most one default network 1237 * is active at a time. If more than one is active, it is indeterminate 1238 * which will be returned. 1239 * @return the ip properties for the active network, or {@code null} if 1240 * none is active 1241 */ 1242 @Override 1243 public LinkProperties getActiveLinkProperties() { 1244 return getLinkPropertiesForType(mActiveDefaultNetwork); 1245 } 1246 1247 @Override 1248 public LinkProperties getLinkPropertiesForType(int networkType) { 1249 enforceAccessPermission(); 1250 if (isNetworkTypeValid(networkType)) { 1251 return getLinkPropertiesForTypeInternal(networkType); 1252 } 1253 return null; 1254 } 1255 1256 // TODO - this should be ALL networks 1257 @Override 1258 public LinkProperties getLinkProperties(Network network) { 1259 enforceAccessPermission(); 1260 NetworkAgentInfo nai = null; 1261 synchronized (mNetworkForNetId) { 1262 nai = mNetworkForNetId.get(network.netId); 1263 } 1264 1265 if (nai != null) { 1266 synchronized (nai) { 1267 return new LinkProperties(nai.linkProperties); 1268 } 1269 } 1270 return null; 1271 } 1272 1273 @Override 1274 public NetworkCapabilities getNetworkCapabilities(Network network) { 1275 enforceAccessPermission(); 1276 NetworkAgentInfo nai = null; 1277 synchronized (mNetworkForNetId) { 1278 nai = mNetworkForNetId.get(network.netId); 1279 } 1280 if (nai != null) { 1281 synchronized (nai) { 1282 return new NetworkCapabilities(nai.networkCapabilities); 1283 } 1284 } 1285 return null; 1286 } 1287 1288 @Override 1289 public NetworkState[] getAllNetworkState() { 1290 enforceAccessPermission(); 1291 final int uid = Binder.getCallingUid(); 1292 final ArrayList<NetworkState> result = Lists.newArrayList(); 1293 synchronized (mRulesLock) { 1294 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1295 networkType++) { 1296 if (getNetworkInfoForType(networkType) != null) { 1297 final NetworkInfo info = getFilteredNetworkInfo(networkType, uid); 1298 final LinkProperties lp = getLinkPropertiesForTypeInternal(networkType); 1299 final NetworkCapabilities netcap = getNetworkCapabilitiesForType(networkType); 1300 result.add(new NetworkState(info, lp, netcap)); 1301 } 1302 } 1303 } 1304 return result.toArray(new NetworkState[result.size()]); 1305 } 1306 1307 private NetworkState getNetworkStateUnchecked(int networkType) { 1308 if (isNetworkTypeValid(networkType)) { 1309 NetworkInfo info = getNetworkInfoForType(networkType); 1310 if (info != null) { 1311 return new NetworkState(info, 1312 getLinkPropertiesForTypeInternal(networkType), 1313 getNetworkCapabilitiesForType(networkType)); 1314 } 1315 } 1316 return null; 1317 } 1318 1319 @Override 1320 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1321 enforceAccessPermission(); 1322 1323 final long token = Binder.clearCallingIdentity(); 1324 try { 1325 final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork); 1326 if (state != null) { 1327 try { 1328 return mPolicyManager.getNetworkQuotaInfo(state); 1329 } catch (RemoteException e) { 1330 } 1331 } 1332 return null; 1333 } finally { 1334 Binder.restoreCallingIdentity(token); 1335 } 1336 } 1337 1338 @Override 1339 public boolean isActiveNetworkMetered() { 1340 enforceAccessPermission(); 1341 final long token = Binder.clearCallingIdentity(); 1342 try { 1343 return isNetworkMeteredUnchecked(mActiveDefaultNetwork); 1344 } finally { 1345 Binder.restoreCallingIdentity(token); 1346 } 1347 } 1348 1349 private boolean isNetworkMeteredUnchecked(int networkType) { 1350 final NetworkState state = getNetworkStateUnchecked(networkType); 1351 if (state != null) { 1352 try { 1353 return mPolicyManager.isNetworkMetered(state); 1354 } catch (RemoteException e) { 1355 } 1356 } 1357 return false; 1358 } 1359 1360 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1361 @Override 1362 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1363 int deviceType = Integer.parseInt(label); 1364 sendDataActivityBroadcast(deviceType, active, tsNanos); 1365 } 1366 }; 1367 1368 /** 1369 * Used to notice when the calling process dies so we can self-expire 1370 * 1371 * Also used to know if the process has cleaned up after itself when 1372 * our auto-expire timer goes off. The timer has a link to an object. 1373 * 1374 */ 1375 private class FeatureUser implements IBinder.DeathRecipient { 1376 int mNetworkType; 1377 String mFeature; 1378 IBinder mBinder; 1379 int mPid; 1380 int mUid; 1381 long mCreateTime; 1382 1383 FeatureUser(int type, String feature, IBinder binder) { 1384 super(); 1385 mNetworkType = type; 1386 mFeature = feature; 1387 mBinder = binder; 1388 mPid = getCallingPid(); 1389 mUid = getCallingUid(); 1390 mCreateTime = System.currentTimeMillis(); 1391 1392 try { 1393 mBinder.linkToDeath(this, 0); 1394 } catch (RemoteException e) { 1395 binderDied(); 1396 } 1397 } 1398 1399 void unlinkDeathRecipient() { 1400 mBinder.unlinkToDeath(this, 0); 1401 } 1402 1403 public void binderDied() { 1404 log("ConnectivityService FeatureUser binderDied(" + 1405 mNetworkType + ", " + mFeature + ", " + mBinder + "), created " + 1406 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1407 stopUsingNetworkFeature(this, false); 1408 } 1409 1410 public void expire() { 1411 if (VDBG) { 1412 log("ConnectivityService FeatureUser expire(" + 1413 mNetworkType + ", " + mFeature + ", " + mBinder +"), created " + 1414 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1415 } 1416 stopUsingNetworkFeature(this, false); 1417 } 1418 1419 public boolean isSameUser(FeatureUser u) { 1420 if (u == null) return false; 1421 1422 return isSameUser(u.mPid, u.mUid, u.mNetworkType, u.mFeature); 1423 } 1424 1425 public boolean isSameUser(int pid, int uid, int networkType, String feature) { 1426 if ((mPid == pid) && (mUid == uid) && (mNetworkType == networkType) && 1427 TextUtils.equals(mFeature, feature)) { 1428 return true; 1429 } 1430 return false; 1431 } 1432 1433 public String toString() { 1434 return "FeatureUser("+mNetworkType+","+mFeature+","+mPid+","+mUid+"), created " + 1435 (System.currentTimeMillis() - mCreateTime) + " mSec ago"; 1436 } 1437 } 1438 1439 // javadoc from interface 1440 public int startUsingNetworkFeature(int networkType, String feature, 1441 IBinder binder) { 1442 long startTime = 0; 1443 if (DBG) { 1444 startTime = SystemClock.elapsedRealtime(); 1445 } 1446 if (VDBG) { 1447 log("startUsingNetworkFeature for net " + networkType + ": " + feature + ", uid=" 1448 + Binder.getCallingUid()); 1449 } 1450 enforceChangePermission(); 1451 try { 1452 if (!ConnectivityManager.isNetworkTypeValid(networkType) || 1453 mNetConfigs[networkType] == null) { 1454 return PhoneConstants.APN_REQUEST_FAILED; 1455 } 1456 1457 FeatureUser f = new FeatureUser(networkType, feature, binder); 1458 1459 // TODO - move this into individual networktrackers 1460 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1461 1462 if (mLockdownEnabled) { 1463 // Since carrier APNs usually aren't available from VPN 1464 // endpoint, mark them as unavailable. 1465 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1466 } 1467 1468 if (mProtectedNetworks.contains(usedNetworkType)) { 1469 enforceConnectivityInternalPermission(); 1470 } 1471 1472 // if UID is restricted, don't allow them to bring up metered APNs 1473 final boolean networkMetered = isNetworkMeteredUnchecked(usedNetworkType); 1474 final int uidRules; 1475 synchronized (mRulesLock) { 1476 uidRules = mUidRules.get(Binder.getCallingUid(), RULE_ALLOW_ALL); 1477 } 1478 if (networkMetered && (uidRules & RULE_REJECT_METERED) != 0) { 1479 return PhoneConstants.APN_REQUEST_FAILED; 1480 } 1481 1482 NetworkStateTracker network = mNetTrackers[usedNetworkType]; 1483 if (network != null) { 1484 Integer currentPid = new Integer(getCallingPid()); 1485 if (usedNetworkType != networkType) { 1486 NetworkInfo ni = network.getNetworkInfo(); 1487 1488 if (ni.isAvailable() == false) { 1489 if (!TextUtils.equals(feature,Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 1490 if (DBG) log("special network not available ni=" + ni.getTypeName()); 1491 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1492 } else { 1493 // else make the attempt anyway - probably giving REQUEST_STARTED below 1494 if (DBG) { 1495 log("special network not available, but try anyway ni=" + 1496 ni.getTypeName()); 1497 } 1498 } 1499 } 1500 1501 int restoreTimer = getRestoreDefaultNetworkDelay(usedNetworkType); 1502 1503 synchronized(this) { 1504 boolean addToList = true; 1505 if (restoreTimer < 0) { 1506 // In case there is no timer is specified for the feature, 1507 // make sure we don't add duplicate entry with the same request. 1508 for (FeatureUser u : mFeatureUsers) { 1509 if (u.isSameUser(f)) { 1510 // Duplicate user is found. Do not add. 1511 addToList = false; 1512 break; 1513 } 1514 } 1515 } 1516 1517 if (addToList) mFeatureUsers.add(f); 1518 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1519 // this gets used for per-pid dns when connected 1520 mNetRequestersPids[usedNetworkType].add(currentPid); 1521 } 1522 } 1523 1524 if (restoreTimer >= 0) { 1525 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1526 EVENT_RESTORE_DEFAULT_NETWORK, f), restoreTimer); 1527 } 1528 1529 if ((ni.isConnectedOrConnecting() == true) && 1530 !network.isTeardownRequested()) { 1531 if (ni.isConnected() == true) { 1532 final long token = Binder.clearCallingIdentity(); 1533 try { 1534 // add the pid-specific dns 1535 handleDnsConfigurationChange(usedNetworkType); 1536 if (VDBG) log("special network already active"); 1537 } finally { 1538 Binder.restoreCallingIdentity(token); 1539 } 1540 return PhoneConstants.APN_ALREADY_ACTIVE; 1541 } 1542 if (VDBG) log("special network already connecting"); 1543 return PhoneConstants.APN_REQUEST_STARTED; 1544 } 1545 1546 // check if the radio in play can make another contact 1547 // assume if cannot for now 1548 1549 if (DBG) { 1550 log("startUsingNetworkFeature reconnecting to " + networkType + ": " + 1551 feature); 1552 } 1553 if (network.reconnect()) { 1554 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_STARTED"); 1555 return PhoneConstants.APN_REQUEST_STARTED; 1556 } else { 1557 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_FAILED"); 1558 return PhoneConstants.APN_REQUEST_FAILED; 1559 } 1560 } else { 1561 // need to remember this unsupported request so we respond appropriately on stop 1562 synchronized(this) { 1563 mFeatureUsers.add(f); 1564 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1565 // this gets used for per-pid dns when connected 1566 mNetRequestersPids[usedNetworkType].add(currentPid); 1567 } 1568 } 1569 if (DBG) log("startUsingNetworkFeature X: return -1 unsupported feature."); 1570 return -1; 1571 } 1572 } 1573 if (DBG) log("startUsingNetworkFeature X: return APN_TYPE_NOT_AVAILABLE"); 1574 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1575 } finally { 1576 if (DBG) { 1577 final long execTime = SystemClock.elapsedRealtime() - startTime; 1578 if (execTime > 250) { 1579 loge("startUsingNetworkFeature took too long: " + execTime + "ms"); 1580 } else { 1581 if (VDBG) log("startUsingNetworkFeature took " + execTime + "ms"); 1582 } 1583 } 1584 } 1585 } 1586 1587 // javadoc from interface 1588 public int stopUsingNetworkFeature(int networkType, String feature) { 1589 enforceChangePermission(); 1590 1591 int pid = getCallingPid(); 1592 int uid = getCallingUid(); 1593 1594 FeatureUser u = null; 1595 boolean found = false; 1596 1597 synchronized(this) { 1598 for (FeatureUser x : mFeatureUsers) { 1599 if (x.isSameUser(pid, uid, networkType, feature)) { 1600 u = x; 1601 found = true; 1602 break; 1603 } 1604 } 1605 } 1606 if (found && u != null) { 1607 if (VDBG) log("stopUsingNetworkFeature: X"); 1608 // stop regardless of how many other time this proc had called start 1609 return stopUsingNetworkFeature(u, true); 1610 } else { 1611 // none found! 1612 if (VDBG) log("stopUsingNetworkFeature: X not a live request, ignoring"); 1613 return 1; 1614 } 1615 } 1616 1617 private int stopUsingNetworkFeature(FeatureUser u, boolean ignoreDups) { 1618 int networkType = u.mNetworkType; 1619 String feature = u.mFeature; 1620 int pid = u.mPid; 1621 int uid = u.mUid; 1622 1623 NetworkStateTracker tracker = null; 1624 boolean callTeardown = false; // used to carry our decision outside of sync block 1625 1626 if (VDBG) { 1627 log("stopUsingNetworkFeature: net " + networkType + ": " + feature); 1628 } 1629 1630 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1631 if (DBG) { 1632 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1633 ", net is invalid"); 1634 } 1635 return -1; 1636 } 1637 1638 // need to link the mFeatureUsers list with the mNetRequestersPids state in this 1639 // sync block 1640 synchronized(this) { 1641 // check if this process still has an outstanding start request 1642 if (!mFeatureUsers.contains(u)) { 1643 if (VDBG) { 1644 log("stopUsingNetworkFeature: this process has no outstanding requests" + 1645 ", ignoring"); 1646 } 1647 return 1; 1648 } 1649 u.unlinkDeathRecipient(); 1650 mFeatureUsers.remove(mFeatureUsers.indexOf(u)); 1651 // If we care about duplicate requests, check for that here. 1652 // 1653 // This is done to support the extension of a request - the app 1654 // can request we start the network feature again and renew the 1655 // auto-shutoff delay. Normal "stop" calls from the app though 1656 // do not pay attention to duplicate requests - in effect the 1657 // API does not refcount and a single stop will counter multiple starts. 1658 if (ignoreDups == false) { 1659 for (FeatureUser x : mFeatureUsers) { 1660 if (x.isSameUser(u)) { 1661 if (VDBG) log("stopUsingNetworkFeature: dup is found, ignoring"); 1662 return 1; 1663 } 1664 } 1665 } 1666 1667 // TODO - move to individual network trackers 1668 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1669 1670 tracker = mNetTrackers[usedNetworkType]; 1671 if (tracker == null) { 1672 if (DBG) { 1673 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1674 " no known tracker for used net type " + usedNetworkType); 1675 } 1676 return -1; 1677 } 1678 if (usedNetworkType != networkType) { 1679 Integer currentPid = new Integer(pid); 1680 mNetRequestersPids[usedNetworkType].remove(currentPid); 1681 1682 final long token = Binder.clearCallingIdentity(); 1683 try { 1684 reassessPidDns(pid, true); 1685 } finally { 1686 Binder.restoreCallingIdentity(token); 1687 } 1688 flushVmDnsCache(); 1689 if (mNetRequestersPids[usedNetworkType].size() != 0) { 1690 if (VDBG) { 1691 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1692 " others still using it"); 1693 } 1694 return 1; 1695 } 1696 callTeardown = true; 1697 } else { 1698 if (DBG) { 1699 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1700 " not a known feature - dropping"); 1701 } 1702 } 1703 } 1704 1705 if (callTeardown) { 1706 if (DBG) { 1707 log("stopUsingNetworkFeature: teardown net " + networkType + ": " + feature); 1708 } 1709 tracker.teardown(); 1710 return 1; 1711 } else { 1712 return -1; 1713 } 1714 } 1715 1716 /** 1717 * Check if the address falls into any of currently running VPN's route's. 1718 */ 1719 private boolean isAddressUnderVpn(InetAddress address) { 1720 synchronized (mVpns) { 1721 synchronized (mRoutesLock) { 1722 int uid = UserHandle.getCallingUserId(); 1723 Vpn vpn = mVpns.get(uid); 1724 if (vpn == null) { 1725 return false; 1726 } 1727 1728 // Check if an exemption exists for this address. 1729 for (LinkAddress destination : mExemptAddresses) { 1730 if (!NetworkUtils.addressTypeMatches(address, destination.getAddress())) { 1731 continue; 1732 } 1733 1734 int prefix = destination.getPrefixLength(); 1735 InetAddress addrMasked = NetworkUtils.getNetworkPart(address, prefix); 1736 InetAddress destMasked = NetworkUtils.getNetworkPart(destination.getAddress(), 1737 prefix); 1738 1739 if (addrMasked.equals(destMasked)) { 1740 return false; 1741 } 1742 } 1743 1744 // Finally check if the address is covered by the VPN. 1745 return vpn.isAddressCovered(address); 1746 } 1747 } 1748 } 1749 1750 /** 1751 * @deprecated use requestRouteToHostAddress instead 1752 * 1753 * Ensure that a network route exists to deliver traffic to the specified 1754 * host via the specified network interface. 1755 * @param networkType the type of the network over which traffic to the 1756 * specified host is to be routed 1757 * @param hostAddress the IP address of the host to which the route is 1758 * desired 1759 * @return {@code true} on success, {@code false} on failure 1760 */ 1761 public boolean requestRouteToHost(int networkType, int hostAddress, String packageName) { 1762 InetAddress inetAddress = NetworkUtils.intToInetAddress(hostAddress); 1763 1764 if (inetAddress == null) { 1765 return false; 1766 } 1767 1768 return requestRouteToHostAddress(networkType, inetAddress.getAddress(), packageName); 1769 } 1770 1771 /** 1772 * Ensure that a network route exists to deliver traffic to the specified 1773 * host via the specified network interface. 1774 * @param networkType the type of the network over which traffic to the 1775 * specified host is to be routed 1776 * @param hostAddress the IP address of the host to which the route is 1777 * desired 1778 * @return {@code true} on success, {@code false} on failure 1779 */ 1780 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress, 1781 String packageName) { 1782 enforceChangePermission(); 1783 if (mProtectedNetworks.contains(networkType)) { 1784 enforceConnectivityInternalPermission(); 1785 } 1786 boolean exempt; 1787 InetAddress addr; 1788 try { 1789 addr = InetAddress.getByAddress(hostAddress); 1790 } catch (UnknownHostException e) { 1791 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1792 return false; 1793 } 1794 // System apps may request routes bypassing the VPN to keep other networks working. 1795 if (Binder.getCallingUid() == Process.SYSTEM_UID) { 1796 exempt = true; 1797 } else { 1798 mAppOpsManager.checkPackage(Binder.getCallingUid(), packageName); 1799 try { 1800 ApplicationInfo info = mContext.getPackageManager().getApplicationInfo(packageName, 1801 0); 1802 exempt = (info.flags & ApplicationInfo.FLAG_SYSTEM) != 0; 1803 } catch (NameNotFoundException e) { 1804 throw new IllegalArgumentException("Failed to find calling package details", e); 1805 } 1806 } 1807 1808 // Non-exempt routeToHost's can only be added if the host is not covered by the VPN. 1809 // This can be either because the VPN's routes do not cover the destination or a 1810 // system application added an exemption that covers this destination. 1811 if (!exempt && isAddressUnderVpn(addr)) { 1812 return false; 1813 } 1814 1815 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1816 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1817 return false; 1818 } 1819 1820 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1821 if (nai == null) { 1822 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1823 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1824 } else { 1825 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1826 } 1827 return false; 1828 } 1829 DetailedState netState; 1830 synchronized (nai) { 1831 netState = nai.networkInfo.getDetailedState(); 1832 } 1833 1834 if ((netState != DetailedState.CONNECTED && 1835 netState != DetailedState.CAPTIVE_PORTAL_CHECK)) { 1836 if (VDBG) { 1837 log("requestRouteToHostAddress on down network " 1838 + "(" + networkType + ") - dropped" 1839 + " netState=" + netState); 1840 } 1841 return false; 1842 } 1843 final int uid = Binder.getCallingUid(); 1844 final long token = Binder.clearCallingIdentity(); 1845 try { 1846 LinkProperties lp = null; 1847 int netId = INVALID_NET_ID; 1848 synchronized (nai) { 1849 lp = nai.linkProperties; 1850 netId = nai.network.netId; 1851 } 1852 boolean ok = modifyRouteToAddress(lp, addr, ADD, TO_DEFAULT_TABLE, exempt, netId, uid); 1853 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1854 return ok; 1855 } finally { 1856 Binder.restoreCallingIdentity(token); 1857 } 1858 } 1859 1860 private boolean addRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, 1861 boolean exempt, int netId) { 1862 return modifyRoute(p, r, 0, ADD, toDefaultTable, exempt, netId, false, UID_UNUSED); 1863 } 1864 1865 private boolean removeRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, int netId) { 1866 return modifyRoute(p, r, 0, REMOVE, toDefaultTable, UNEXEMPT, netId, false, UID_UNUSED); 1867 } 1868 1869 private boolean modifyRouteToAddress(LinkProperties lp, InetAddress addr, boolean doAdd, 1870 boolean toDefaultTable, boolean exempt, int netId, int uid) { 1871 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1872 if (bestRoute == null) { 1873 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1874 } else { 1875 String iface = bestRoute.getInterface(); 1876 if (bestRoute.getGateway().equals(addr)) { 1877 // if there is no better route, add the implied hostroute for our gateway 1878 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1879 } else { 1880 // if we will connect to this through another route, add a direct route 1881 // to it's gateway 1882 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1883 } 1884 } 1885 return modifyRoute(lp, bestRoute, 0, doAdd, toDefaultTable, exempt, netId, true, uid); 1886 } 1887 1888 /* 1889 * TODO: Clean all this stuff up. Once we have UID-based routing, stuff will break due to 1890 * incorrect tracking of mAddedRoutes, so a cleanup becomes necessary and urgent. But at 1891 * the same time, there'll be no more need to track mAddedRoutes or mExemptAddresses, 1892 * or even have the concept of an exempt address, or do things like "selectBestRoute", or 1893 * determine "default" vs "secondary" table, etc., so the cleanup becomes possible. 1894 */ 1895 private boolean modifyRoute(LinkProperties lp, RouteInfo r, int cycleCount, boolean doAdd, 1896 boolean toDefaultTable, boolean exempt, int netId, boolean legacy, int uid) { 1897 if ((lp == null) || (r == null)) { 1898 if (DBG) log("modifyRoute got unexpected null: " + lp + ", " + r); 1899 return false; 1900 } 1901 1902 if (cycleCount > MAX_HOSTROUTE_CYCLE_COUNT) { 1903 loge("Error modifying route - too much recursion"); 1904 return false; 1905 } 1906 1907 String ifaceName = r.getInterface(); 1908 if(ifaceName == null) { 1909 loge("Error modifying route - no interface name"); 1910 return false; 1911 } 1912 if (r.hasGateway()) { 1913 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), r.getGateway()); 1914 if (bestRoute != null) { 1915 if (bestRoute.getGateway().equals(r.getGateway())) { 1916 // if there is no better route, add the implied hostroute for our gateway 1917 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), ifaceName); 1918 } else { 1919 // if we will connect to our gateway through another route, add a direct 1920 // route to it's gateway 1921 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), 1922 bestRoute.getGateway(), 1923 ifaceName); 1924 } 1925 modifyRoute(lp, bestRoute, cycleCount+1, doAdd, toDefaultTable, exempt, netId, 1926 legacy, uid); 1927 } 1928 } 1929 if (doAdd) { 1930 if (VDBG) log("Adding " + r + " for interface " + ifaceName); 1931 try { 1932 if (toDefaultTable) { 1933 synchronized (mRoutesLock) { 1934 // only track default table - only one apps can effect 1935 mAddedRoutes.add(r); 1936 if (legacy) { 1937 mNetd.addLegacyRouteForNetId(netId, r, uid); 1938 } else { 1939 mNetd.addRoute(netId, r); 1940 } 1941 if (exempt) { 1942 LinkAddress dest = r.getDestinationLinkAddress(); 1943 if (!mExemptAddresses.contains(dest)) { 1944 mNetd.setHostExemption(dest); 1945 mExemptAddresses.add(dest); 1946 } 1947 } 1948 } 1949 } else { 1950 if (legacy) { 1951 mNetd.addLegacyRouteForNetId(netId, r, uid); 1952 } else { 1953 mNetd.addRoute(netId, r); 1954 } 1955 } 1956 } catch (Exception e) { 1957 // never crash - catch them all 1958 if (DBG) loge("Exception trying to add a route: " + e); 1959 return false; 1960 } 1961 } else { 1962 // if we remove this one and there are no more like it, then refcount==0 and 1963 // we can remove it from the table 1964 if (toDefaultTable) { 1965 synchronized (mRoutesLock) { 1966 mAddedRoutes.remove(r); 1967 if (mAddedRoutes.contains(r) == false) { 1968 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1969 try { 1970 if (legacy) { 1971 mNetd.removeLegacyRouteForNetId(netId, r, uid); 1972 } else { 1973 mNetd.removeRoute(netId, r); 1974 } 1975 LinkAddress dest = r.getDestinationLinkAddress(); 1976 if (mExemptAddresses.contains(dest)) { 1977 mNetd.clearHostExemption(dest); 1978 mExemptAddresses.remove(dest); 1979 } 1980 } catch (Exception e) { 1981 // never crash - catch them all 1982 if (VDBG) loge("Exception trying to remove a route: " + e); 1983 return false; 1984 } 1985 } else { 1986 if (VDBG) log("not removing " + r + " as it's still in use"); 1987 } 1988 } 1989 } else { 1990 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1991 try { 1992 if (legacy) { 1993 mNetd.removeLegacyRouteForNetId(netId, r, uid); 1994 } else { 1995 mNetd.removeRoute(netId, r); 1996 } 1997 } catch (Exception e) { 1998 // never crash - catch them all 1999 if (VDBG) loge("Exception trying to remove a route: " + e); 2000 return false; 2001 } 2002 } 2003 } 2004 return true; 2005 } 2006 2007 public void setDataDependency(int networkType, boolean met) { 2008 enforceConnectivityInternalPermission(); 2009 2010 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 2011 (met ? ENABLED : DISABLED), networkType)); 2012 } 2013 2014 private void handleSetDependencyMet(int networkType, boolean met) { 2015 if (mNetTrackers[networkType] != null) { 2016 if (DBG) { 2017 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 2018 } 2019 mNetTrackers[networkType].setDependencyMet(met); 2020 } 2021 } 2022 2023 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 2024 @Override 2025 public void onUidRulesChanged(int uid, int uidRules) { 2026 // caller is NPMS, since we only register with them 2027 if (LOGD_RULES) { 2028 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 2029 } 2030 2031 synchronized (mRulesLock) { 2032 // skip update when we've already applied rules 2033 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 2034 if (oldRules == uidRules) return; 2035 2036 mUidRules.put(uid, uidRules); 2037 } 2038 2039 // TODO: notify UID when it has requested targeted updates 2040 } 2041 2042 @Override 2043 public void onMeteredIfacesChanged(String[] meteredIfaces) { 2044 // caller is NPMS, since we only register with them 2045 if (LOGD_RULES) { 2046 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 2047 } 2048 2049 synchronized (mRulesLock) { 2050 mMeteredIfaces.clear(); 2051 for (String iface : meteredIfaces) { 2052 mMeteredIfaces.add(iface); 2053 } 2054 } 2055 } 2056 2057 @Override 2058 public void onRestrictBackgroundChanged(boolean restrictBackground) { 2059 // caller is NPMS, since we only register with them 2060 if (LOGD_RULES) { 2061 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 2062 } 2063 2064 // kick off connectivity change broadcast for active network, since 2065 // global background policy change is radical. 2066 final int networkType = mActiveDefaultNetwork; 2067 if (isNetworkTypeValid(networkType)) { 2068 final NetworkStateTracker tracker = mNetTrackers[networkType]; 2069 if (tracker != null) { 2070 final NetworkInfo info = tracker.getNetworkInfo(); 2071 if (info != null && info.isConnected()) { 2072 sendConnectedBroadcast(info); 2073 } 2074 } 2075 } 2076 } 2077 }; 2078 2079 @Override 2080 public void setPolicyDataEnable(int networkType, boolean enabled) { 2081 // only someone like NPMS should only be calling us 2082 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 2083 2084 mHandler.sendMessage(mHandler.obtainMessage( 2085 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 2086 } 2087 2088 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 2089 // TODO - handle this passing to factories 2090// if (isNetworkTypeValid(networkType)) { 2091// final NetworkStateTracker tracker = mNetTrackers[networkType]; 2092// if (tracker != null) { 2093// tracker.setPolicyDataEnable(enabled); 2094// } 2095// } 2096 } 2097 2098 private void enforceAccessPermission() { 2099 mContext.enforceCallingOrSelfPermission( 2100 android.Manifest.permission.ACCESS_NETWORK_STATE, 2101 "ConnectivityService"); 2102 } 2103 2104 private void enforceChangePermission() { 2105 mContext.enforceCallingOrSelfPermission( 2106 android.Manifest.permission.CHANGE_NETWORK_STATE, 2107 "ConnectivityService"); 2108 } 2109 2110 // TODO Make this a special check when it goes public 2111 private void enforceTetherChangePermission() { 2112 mContext.enforceCallingOrSelfPermission( 2113 android.Manifest.permission.CHANGE_NETWORK_STATE, 2114 "ConnectivityService"); 2115 } 2116 2117 private void enforceTetherAccessPermission() { 2118 mContext.enforceCallingOrSelfPermission( 2119 android.Manifest.permission.ACCESS_NETWORK_STATE, 2120 "ConnectivityService"); 2121 } 2122 2123 private void enforceConnectivityInternalPermission() { 2124 mContext.enforceCallingOrSelfPermission( 2125 android.Manifest.permission.CONNECTIVITY_INTERNAL, 2126 "ConnectivityService"); 2127 } 2128 2129 private void enforceMarkNetworkSocketPermission() { 2130 //Media server special case 2131 if (Binder.getCallingUid() == Process.MEDIA_UID) { 2132 return; 2133 } 2134 mContext.enforceCallingOrSelfPermission( 2135 android.Manifest.permission.MARK_NETWORK_SOCKET, 2136 "ConnectivityService"); 2137 } 2138 2139 /** 2140 * Handle a {@code DISCONNECTED} event. If this pertains to the non-active 2141 * network, we ignore it. If it is for the active network, we send out a 2142 * broadcast. But first, we check whether it might be possible to connect 2143 * to a different network. 2144 * @param info the {@code NetworkInfo} for the network 2145 */ 2146 private void handleDisconnect(NetworkInfo info) { 2147 2148 int prevNetType = info.getType(); 2149 2150 mNetTrackers[prevNetType].setTeardownRequested(false); 2151 int thisNetId = mNetTrackers[prevNetType].getNetwork().netId; 2152 2153 // Remove idletimer previously setup in {@code handleConnect} 2154// Already in place in new function. This is dead code. 2155// if (mNetConfigs[prevNetType].isDefault()) { 2156// removeDataActivityTracking(prevNetType); 2157// } 2158 2159 /* 2160 * If the disconnected network is not the active one, then don't report 2161 * this as a loss of connectivity. What probably happened is that we're 2162 * getting the disconnect for a network that we explicitly disabled 2163 * in accordance with network preference policies. 2164 */ 2165 if (!mNetConfigs[prevNetType].isDefault()) { 2166 List<Integer> pids = mNetRequestersPids[prevNetType]; 2167 for (Integer pid : pids) { 2168 // will remove them because the net's no longer connected 2169 // need to do this now as only now do we know the pids and 2170 // can properly null things that are no longer referenced. 2171 reassessPidDns(pid.intValue(), false); 2172 } 2173 } 2174 2175 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 2176 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2177 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2178 if (info.isFailover()) { 2179 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2180 info.setFailover(false); 2181 } 2182 if (info.getReason() != null) { 2183 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2184 } 2185 if (info.getExtraInfo() != null) { 2186 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2187 info.getExtraInfo()); 2188 } 2189 2190 if (mNetConfigs[prevNetType].isDefault()) { 2191 tryFailover(prevNetType); 2192 if (mActiveDefaultNetwork != -1) { 2193 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2194 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 2195 } else { 2196 mDefaultInetConditionPublished = 0; // we're not connected anymore 2197 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2198 } 2199 } 2200 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2201 2202 // Reset interface if no other connections are using the same interface 2203 boolean doReset = true; 2204 LinkProperties linkProperties = mNetTrackers[prevNetType].getLinkProperties(); 2205 if (linkProperties != null) { 2206 String oldIface = linkProperties.getInterfaceName(); 2207 if (TextUtils.isEmpty(oldIface) == false) { 2208 for (NetworkStateTracker networkStateTracker : mNetTrackers) { 2209 if (networkStateTracker == null) continue; 2210 NetworkInfo networkInfo = networkStateTracker.getNetworkInfo(); 2211 if (networkInfo.isConnected() && networkInfo.getType() != prevNetType) { 2212 LinkProperties l = networkStateTracker.getLinkProperties(); 2213 if (l == null) continue; 2214 if (oldIface.equals(l.getInterfaceName())) { 2215 doReset = false; 2216 break; 2217 } 2218 } 2219 } 2220 } 2221 } 2222 2223 // do this before we broadcast the change 2224// Already done in new function. This is dead code. 2225// handleConnectivityChange(prevNetType, doReset); 2226 2227 final Intent immediateIntent = new Intent(intent); 2228 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 2229 sendStickyBroadcast(immediateIntent); 2230 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 2231 /* 2232 * If the failover network is already connected, then immediately send 2233 * out a followup broadcast indicating successful failover 2234 */ 2235 if (mActiveDefaultNetwork != -1) { 2236 sendConnectedBroadcastDelayed(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(), 2237 getConnectivityChangeDelay()); 2238 } 2239 try { 2240// mNetd.removeNetwork(thisNetId); 2241 } catch (Exception e) { 2242 loge("Exception removing network: " + e); 2243 } finally { 2244 mNetTrackers[prevNetType].setNetId(INVALID_NET_ID); 2245 } 2246 } 2247 2248 private void tryFailover(int prevNetType) { 2249 /* 2250 * If this is a default network, check if other defaults are available. 2251 * Try to reconnect on all available and let them hash it out when 2252 * more than one connects. 2253 */ 2254 if (mNetConfigs[prevNetType].isDefault()) { 2255 if (mActiveDefaultNetwork == prevNetType) { 2256 if (DBG) { 2257 log("tryFailover: set mActiveDefaultNetwork=-1, prevNetType=" + prevNetType); 2258 } 2259 mActiveDefaultNetwork = -1; 2260 try { 2261 mNetd.clearDefaultNetId(); 2262 } catch (Exception e) { 2263 loge("Exception clearing default network :" + e); 2264 } 2265 } 2266 2267 // don't signal a reconnect for anything lower or equal priority than our 2268 // current connected default 2269 // TODO - don't filter by priority now - nice optimization but risky 2270// int currentPriority = -1; 2271// if (mActiveDefaultNetwork != -1) { 2272// currentPriority = mNetConfigs[mActiveDefaultNetwork].mPriority; 2273// } 2274 2275 for (int checkType=0; checkType <= ConnectivityManager.MAX_NETWORK_TYPE; checkType++) { 2276 if (checkType == prevNetType) continue; 2277 if (mNetConfigs[checkType] == null) continue; 2278 if (!mNetConfigs[checkType].isDefault()) continue; 2279 if (mNetTrackers[checkType] == null) continue; 2280 2281// Enabling the isAvailable() optimization caused mobile to not get 2282// selected if it was in the middle of error handling. Specifically 2283// a moble connection that took 30 seconds to complete the DEACTIVATE_DATA_CALL 2284// would not be available and we wouldn't get connected to anything. 2285// So removing the isAvailable() optimization below for now. TODO: This 2286// optimization should work and we need to investigate why it doesn't work. 2287// This could be related to how DEACTIVATE_DATA_CALL is reporting its 2288// complete before it is really complete. 2289 2290// if (!mNetTrackers[checkType].isAvailable()) continue; 2291 2292// if (currentPriority >= mNetConfigs[checkType].mPriority) continue; 2293 2294 NetworkStateTracker checkTracker = mNetTrackers[checkType]; 2295 NetworkInfo checkInfo = checkTracker.getNetworkInfo(); 2296 if (!checkInfo.isConnectedOrConnecting() || checkTracker.isTeardownRequested()) { 2297 checkInfo.setFailover(true); 2298 checkTracker.reconnect(); 2299 } 2300 if (DBG) log("Attempting to switch to " + checkInfo.getTypeName()); 2301 } 2302 } 2303 } 2304 2305 public void sendConnectedBroadcast(NetworkInfo info) { 2306 enforceConnectivityInternalPermission(); 2307 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2308 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 2309 } 2310 2311 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 2312 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2313 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 2314 } 2315 2316 private void sendInetConditionBroadcast(NetworkInfo info) { 2317 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 2318 } 2319 2320 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 2321 if (mLockdownTracker != null) { 2322 info = mLockdownTracker.augmentNetworkInfo(info); 2323 } 2324 2325 Intent intent = new Intent(bcastType); 2326 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2327 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2328 if (info.isFailover()) { 2329 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2330 info.setFailover(false); 2331 } 2332 if (info.getReason() != null) { 2333 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2334 } 2335 if (info.getExtraInfo() != null) { 2336 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2337 info.getExtraInfo()); 2338 } 2339 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2340 return intent; 2341 } 2342 2343 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 2344 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 2345 } 2346 2347 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 2348 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 2349 } 2350 2351 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 2352 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 2353 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 2354 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 2355 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 2356 final long ident = Binder.clearCallingIdentity(); 2357 try { 2358 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 2359 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 2360 } finally { 2361 Binder.restoreCallingIdentity(ident); 2362 } 2363 } 2364 2365 private void sendStickyBroadcast(Intent intent) { 2366 synchronized(this) { 2367 if (!mSystemReady) { 2368 mInitialBroadcast = new Intent(intent); 2369 } 2370 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2371 if (VDBG) { 2372 log("sendStickyBroadcast: action=" + intent.getAction()); 2373 } 2374 2375 final long ident = Binder.clearCallingIdentity(); 2376 try { 2377 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2378 } finally { 2379 Binder.restoreCallingIdentity(ident); 2380 } 2381 } 2382 } 2383 2384 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 2385 if (delayMs <= 0) { 2386 sendStickyBroadcast(intent); 2387 } else { 2388 if (VDBG) { 2389 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 2390 + intent.getAction()); 2391 } 2392 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2393 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 2394 } 2395 } 2396 2397 void systemReady() { 2398 if (mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_WIFI)) { 2399 mCaptivePortalTracker = CaptivePortalTracker.makeCaptivePortalTracker(mContext, this); 2400 } 2401 loadGlobalProxy(); 2402 2403 synchronized(this) { 2404 mSystemReady = true; 2405 if (mInitialBroadcast != null) { 2406 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 2407 mInitialBroadcast = null; 2408 } 2409 } 2410 // load the global proxy at startup 2411 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 2412 2413 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 2414 // for user to unlock device. 2415 if (!updateLockdownVpn()) { 2416 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 2417 mContext.registerReceiver(mUserPresentReceiver, filter); 2418 } 2419 } 2420 2421 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 2422 @Override 2423 public void onReceive(Context context, Intent intent) { 2424 // Try creating lockdown tracker, since user present usually means 2425 // unlocked keystore. 2426 if (updateLockdownVpn()) { 2427 mContext.unregisterReceiver(this); 2428 } 2429 } 2430 }; 2431 2432 private boolean isNewNetTypePreferredOverCurrentNetType(int type) { 2433 if (((type != mNetworkPreference) 2434 && (mNetConfigs[mActiveDefaultNetwork].priority > mNetConfigs[type].priority)) 2435 || (mNetworkPreference == mActiveDefaultNetwork)) { 2436 return false; 2437 } 2438 return true; 2439 } 2440 2441 private void handleConnect(NetworkInfo info) { 2442 final int newNetType = info.getType(); 2443 2444 // snapshot isFailover, because sendConnectedBroadcast() resets it 2445 boolean isFailover = info.isFailover(); 2446 final NetworkStateTracker thisNet = mNetTrackers[newNetType]; 2447 final String thisIface = thisNet.getLinkProperties().getInterfaceName(); 2448 2449 if (VDBG) { 2450 log("handleConnect: E newNetType=" + newNetType + " thisIface=" + thisIface 2451 + " isFailover" + isFailover); 2452 } 2453 2454 // if this is a default net and other default is running 2455 // kill the one not preferred 2456 if (mNetConfigs[newNetType].isDefault()) { 2457 if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != newNetType) { 2458 if (isNewNetTypePreferredOverCurrentNetType(newNetType)) { 2459 String teardownPolicy = SystemProperties.get("net.teardownPolicy"); 2460 if (TextUtils.equals(teardownPolicy, "keep") == false) { 2461 // tear down the other 2462 NetworkStateTracker otherNet = 2463 mNetTrackers[mActiveDefaultNetwork]; 2464 if (DBG) { 2465 log("Policy requires " + otherNet.getNetworkInfo().getTypeName() + 2466 " teardown"); 2467 } 2468 if (!teardown(otherNet)) { 2469 loge("Network declined teardown request"); 2470 teardown(thisNet); 2471 return; 2472 } 2473 } else { 2474 //TODO - remove 2475 loge("network teardown skipped due to net.teardownPolicy setting"); 2476 } 2477 } else { 2478 // don't accept this one 2479 if (VDBG) { 2480 log("Not broadcasting CONNECT_ACTION " + 2481 "to torn down network " + info.getTypeName()); 2482 } 2483 teardown(thisNet); 2484 return; 2485 } 2486 } 2487 int thisNetId = nextNetId(); 2488 thisNet.setNetId(thisNetId); 2489 try { 2490// mNetd.createNetwork(thisNetId, thisIface); 2491 } catch (Exception e) { 2492 loge("Exception creating network :" + e); 2493 teardown(thisNet); 2494 return; 2495 } 2496// Already in place in new function. This is dead code. 2497// setupDataActivityTracking(newNetType); 2498 synchronized (ConnectivityService.this) { 2499 // have a new default network, release the transition wakelock in a second 2500 // if it's held. The second pause is to allow apps to reconnect over the 2501 // new network 2502 if (mNetTransitionWakeLock.isHeld()) { 2503 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2504 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 2505 mNetTransitionWakeLockSerialNumber, 0), 2506 1000); 2507 } 2508 } 2509 mActiveDefaultNetwork = newNetType; 2510 try { 2511 mNetd.setDefaultNetId(thisNetId); 2512 } catch (Exception e) { 2513 loge("Exception setting default network :" + e); 2514 } 2515 // this will cause us to come up initially as unconnected and switching 2516 // to connected after our normal pause unless somebody reports us as reall 2517 // disconnected 2518 mDefaultInetConditionPublished = 0; 2519 mDefaultConnectionSequence++; 2520 mInetConditionChangeInFlight = false; 2521 // Don't do this - if we never sign in stay, grey 2522 //reportNetworkCondition(mActiveDefaultNetwork, 100); 2523 updateNetworkSettings(thisNet); 2524 } else { 2525 int thisNetId = nextNetId(); 2526 thisNet.setNetId(thisNetId); 2527 try { 2528// mNetd.createNetwork(thisNetId, thisIface); 2529 } catch (Exception e) { 2530 loge("Exception creating network :" + e); 2531 teardown(thisNet); 2532 return; 2533 } 2534 } 2535 thisNet.setTeardownRequested(false); 2536// Already in place in new function. This is dead code. 2537// updateMtuSizeSettings(thisNet); 2538// handleConnectivityChange(newNetType, false); 2539 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 2540 2541 // notify battery stats service about this network 2542 if (thisIface != null) { 2543 try { 2544 BatteryStatsService.getService().noteNetworkInterfaceType(thisIface, newNetType); 2545 } catch (RemoteException e) { 2546 // ignored; service lives in system_server 2547 } 2548 } 2549 } 2550 2551 /** @hide */ 2552 @Override 2553 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 2554 enforceConnectivityInternalPermission(); 2555 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 2556// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 2557 } 2558 2559 /** 2560 * Setup data activity tracking for the given network. 2561 * 2562 * Every {@code setupDataActivityTracking} should be paired with a 2563 * {@link #removeDataActivityTracking} for cleanup. 2564 */ 2565 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 2566 final String iface = networkAgent.linkProperties.getInterfaceName(); 2567 2568 final int timeout; 2569 int type = ConnectivityManager.TYPE_NONE; 2570 2571 if (networkAgent.networkCapabilities.hasTransport( 2572 NetworkCapabilities.TRANSPORT_CELLULAR)) { 2573 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2574 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 2575 5); 2576 type = ConnectivityManager.TYPE_MOBILE; 2577 } else if (networkAgent.networkCapabilities.hasTransport( 2578 NetworkCapabilities.TRANSPORT_WIFI)) { 2579 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2580 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 2581 0); 2582 type = ConnectivityManager.TYPE_WIFI; 2583 } else { 2584 // do not track any other networks 2585 timeout = 0; 2586 } 2587 2588 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 2589 try { 2590 mNetd.addIdleTimer(iface, timeout, type); 2591 } catch (Exception e) { 2592 // You shall not crash! 2593 loge("Exception in setupDataActivityTracking " + e); 2594 } 2595 } 2596 } 2597 2598 /** 2599 * Remove data activity tracking when network disconnects. 2600 */ 2601 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 2602 final String iface = networkAgent.linkProperties.getInterfaceName(); 2603 final NetworkCapabilities caps = networkAgent.networkCapabilities; 2604 2605 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 2606 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 2607 try { 2608 // the call fails silently if no idletimer setup for this interface 2609 mNetd.removeIdleTimer(iface); 2610 } catch (Exception e) { 2611 loge("Exception in removeDataActivityTracking " + e); 2612 } 2613 } 2614 } 2615 2616 /** 2617 * After a change in the connectivity state of a network. We're mainly 2618 * concerned with making sure that the list of DNS servers is set up 2619 * according to which networks are connected, and ensuring that the 2620 * right routing table entries exist. 2621 * 2622 * TODO - delete when we're sure all this functionallity is captured. 2623 */ 2624 private void handleConnectivityChange(int netType, LinkProperties curLp, boolean doReset) { 2625 int resetMask = doReset ? NetworkUtils.RESET_ALL_ADDRESSES : 0; 2626 boolean exempt = ConnectivityManager.isNetworkTypeExempt(netType); 2627 if (VDBG) { 2628 log("handleConnectivityChange: netType=" + netType + " doReset=" + doReset 2629 + " resetMask=" + resetMask); 2630 } 2631 2632 /* 2633 * If a non-default network is enabled, add the host routes that 2634 * will allow it's DNS servers to be accessed. 2635 */ 2636 handleDnsConfigurationChange(netType); 2637 2638 LinkProperties newLp = null; 2639 2640 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2641 newLp = mNetTrackers[netType].getLinkProperties(); 2642 if (VDBG) { 2643 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2644 " doReset=" + doReset + " resetMask=" + resetMask + 2645 "\n curLp=" + curLp + 2646 "\n newLp=" + newLp); 2647 } 2648 2649 if (curLp != null) { 2650 if (curLp.isIdenticalInterfaceName(newLp)) { 2651 CompareResult<LinkAddress> car = curLp.compareAddresses(newLp); 2652 if ((car.removed.size() != 0) || (car.added.size() != 0)) { 2653 for (LinkAddress linkAddr : car.removed) { 2654 if (linkAddr.getAddress() instanceof Inet4Address) { 2655 resetMask |= NetworkUtils.RESET_IPV4_ADDRESSES; 2656 } 2657 if (linkAddr.getAddress() instanceof Inet6Address) { 2658 resetMask |= NetworkUtils.RESET_IPV6_ADDRESSES; 2659 } 2660 } 2661 if (DBG) { 2662 log("handleConnectivityChange: addresses changed" + 2663 " linkProperty[" + netType + "]:" + " resetMask=" + resetMask + 2664 "\n car=" + car); 2665 } 2666 } else { 2667 if (VDBG) { 2668 log("handleConnectivityChange: addresses are the same reset per" + 2669 " doReset linkProperty[" + netType + "]:" + 2670 " resetMask=" + resetMask); 2671 } 2672 } 2673 } else { 2674 resetMask = NetworkUtils.RESET_ALL_ADDRESSES; 2675 if (DBG) { 2676 log("handleConnectivityChange: interface not not equivalent reset both" + 2677 " linkProperty[" + netType + "]:" + 2678 " resetMask=" + resetMask); 2679 } 2680 } 2681 } 2682 if (mNetConfigs[netType].isDefault()) { 2683 handleApplyDefaultProxy(newLp.getHttpProxy()); 2684 } 2685 } else { 2686 if (VDBG) { 2687 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2688 " doReset=" + doReset + " resetMask=" + resetMask + 2689 "\n curLp=" + curLp + 2690 "\n newLp= null"); 2691 } 2692 } 2693 mCurrentLinkProperties[netType] = newLp; 2694 boolean resetDns = updateRoutes(newLp, curLp, mNetConfigs[netType].isDefault(), exempt, 2695 mNetTrackers[netType].getNetwork().netId); 2696 2697 if (resetMask != 0 || resetDns) { 2698 if (VDBG) log("handleConnectivityChange: resetting"); 2699 if (curLp != null) { 2700 if (VDBG) log("handleConnectivityChange: resetting curLp=" + curLp); 2701 for (String iface : curLp.getAllInterfaceNames()) { 2702 if (TextUtils.isEmpty(iface) == false) { 2703 if (resetMask != 0) { 2704 if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")"); 2705 NetworkUtils.resetConnections(iface, resetMask); 2706 2707 // Tell VPN the interface is down. It is a temporary 2708 // but effective fix to make VPN aware of the change. 2709 if ((resetMask & NetworkUtils.RESET_IPV4_ADDRESSES) != 0) { 2710 synchronized(mVpns) { 2711 for (int i = 0; i < mVpns.size(); i++) { 2712 mVpns.valueAt(i).interfaceStatusChanged(iface, false); 2713 } 2714 } 2715 } 2716 } 2717 } else { 2718 loge("Can't reset connection for type "+netType); 2719 } 2720 } 2721 if (resetDns) { 2722 flushVmDnsCache(); 2723 if (VDBG) log("resetting DNS cache for type " + netType); 2724 try { 2725 mNetd.flushNetworkDnsCache(mNetTrackers[netType].getNetwork().netId); 2726 } catch (Exception e) { 2727 // never crash - catch them all 2728 if (DBG) loge("Exception resetting dns cache: " + e); 2729 } 2730 } 2731 } 2732 } 2733 2734 // TODO: Temporary notifying upstread change to Tethering. 2735 // @see bug/4455071 2736 /** Notify TetheringService if interface name has been changed. */ 2737 if (TextUtils.equals(mNetTrackers[netType].getNetworkInfo().getReason(), 2738 PhoneConstants.REASON_LINK_PROPERTIES_CHANGED)) { 2739 if (isTetheringSupported()) { 2740 mTethering.handleTetherIfaceChange(); 2741 } 2742 } 2743 } 2744 2745 /** 2746 * Add and remove routes using the old properties (null if not previously connected), 2747 * new properties (null if becoming disconnected). May even be double null, which 2748 * is a noop. 2749 * Uses isLinkDefault to determine if default routes should be set or conversely if 2750 * host routes should be set to the dns servers 2751 * returns a boolean indicating the routes changed 2752 */ 2753 private boolean updateRoutes(LinkProperties newLp, LinkProperties curLp, 2754 boolean isLinkDefault, boolean exempt, int netId) { 2755 Collection<RouteInfo> routesToAdd = null; 2756 CompareResult<InetAddress> dnsDiff = new CompareResult<InetAddress>(); 2757 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 2758 if (curLp != null) { 2759 // check for the delta between the current set and the new 2760 routeDiff = curLp.compareAllRoutes(newLp); 2761 dnsDiff = curLp.compareDnses(newLp); 2762 } else if (newLp != null) { 2763 routeDiff.added = newLp.getAllRoutes(); 2764 dnsDiff.added = newLp.getDnsServers(); 2765 } 2766 2767 boolean routesChanged = (routeDiff.removed.size() != 0 || routeDiff.added.size() != 0); 2768 2769 for (RouteInfo r : routeDiff.removed) { 2770 if (isLinkDefault || ! r.isDefaultRoute()) { 2771 if (VDBG) log("updateRoutes: default remove route r=" + r); 2772 removeRoute(curLp, r, TO_DEFAULT_TABLE, netId); 2773 } 2774 if (isLinkDefault == false) { 2775 // remove from a secondary route table 2776 removeRoute(curLp, r, TO_SECONDARY_TABLE, netId); 2777 } 2778 } 2779 2780 for (RouteInfo r : routeDiff.added) { 2781 if (isLinkDefault || ! r.isDefaultRoute()) { 2782 addRoute(newLp, r, TO_DEFAULT_TABLE, exempt, netId); 2783 } else { 2784 // add to a secondary route table 2785 addRoute(newLp, r, TO_SECONDARY_TABLE, UNEXEMPT, netId); 2786 2787 // many radios add a default route even when we don't want one. 2788 // remove the default route unless somebody else has asked for it 2789 String ifaceName = newLp.getInterfaceName(); 2790 synchronized (mRoutesLock) { 2791 if (!TextUtils.isEmpty(ifaceName) && !mAddedRoutes.contains(r)) { 2792 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 2793 try { 2794 mNetd.removeRoute(netId, r); 2795 } catch (Exception e) { 2796 // never crash - catch them all 2797 if (DBG) loge("Exception trying to remove a route: " + e); 2798 } 2799 } 2800 } 2801 } 2802 } 2803 2804 return routesChanged; 2805 } 2806 2807 /** 2808 * Reads the network specific MTU size from reources. 2809 * and set it on it's iface. 2810 */ 2811 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 2812 final String iface = newLp.getInterfaceName(); 2813 final int mtu = newLp.getMtu(); 2814 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 2815 if (VDBG) log("identical MTU - not setting"); 2816 return; 2817 } 2818 2819 if (mtu < 68 || mtu > 10000) { 2820 loge("Unexpected mtu value: " + mtu + ", " + iface); 2821 return; 2822 } 2823 2824 try { 2825 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 2826 mNetd.setMtu(iface, mtu); 2827 } catch (Exception e) { 2828 Slog.e(TAG, "exception in setMtu()" + e); 2829 } 2830 } 2831 2832 /** 2833 * Reads the network specific TCP buffer sizes from SystemProperties 2834 * net.tcp.buffersize.[default|wifi|umts|edge|gprs] and set them for system 2835 * wide use 2836 */ 2837 private void updateNetworkSettings(NetworkStateTracker nt) { 2838 String key = nt.getTcpBufferSizesPropName(); 2839 String bufferSizes = key == null ? null : SystemProperties.get(key); 2840 2841 if (TextUtils.isEmpty(bufferSizes)) { 2842 if (VDBG) log(key + " not found in system properties. Using defaults"); 2843 2844 // Setting to default values so we won't be stuck to previous values 2845 key = "net.tcp.buffersize.default"; 2846 bufferSizes = SystemProperties.get(key); 2847 } 2848 2849 // Set values in kernel 2850 if (bufferSizes.length() != 0) { 2851 if (VDBG) { 2852 log("Setting TCP values: [" + bufferSizes 2853 + "] which comes from [" + key + "]"); 2854 } 2855 setBufferSize(bufferSizes); 2856 } 2857 2858 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 2859 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 2860 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 2861 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 2862 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 2863 if (rwndValue != 0) { 2864 SystemProperties.set(sysctlKey, rwndValue.toString()); 2865 } 2866 } 2867 2868 /** 2869 * Writes TCP buffer sizes to /sys/kernel/ipv4/tcp_[r/w]mem_[min/def/max] 2870 * which maps to /proc/sys/net/ipv4/tcp_rmem and tcpwmem 2871 * 2872 * @param bufferSizes in the format of "readMin, readInitial, readMax, 2873 * writeMin, writeInitial, writeMax" 2874 */ 2875 private void setBufferSize(String bufferSizes) { 2876 try { 2877 String[] values = bufferSizes.split(","); 2878 2879 if (values.length == 6) { 2880 final String prefix = "/sys/kernel/ipv4/tcp_"; 2881 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 2882 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 2883 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 2884 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 2885 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 2886 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 2887 } else { 2888 loge("Invalid buffersize string: " + bufferSizes); 2889 } 2890 } catch (IOException e) { 2891 loge("Can't set tcp buffer sizes:" + e); 2892 } 2893 } 2894 2895 /** 2896 * Adjust the per-process dns entries (net.dns<x>.<pid>) based 2897 * on the highest priority active net which this process requested. 2898 * If there aren't any, clear it out 2899 */ 2900 private void reassessPidDns(int pid, boolean doBump) 2901 { 2902 if (VDBG) log("reassessPidDns for pid " + pid); 2903 Integer myPid = new Integer(pid); 2904 for(int i : mPriorityList) { 2905 if (mNetConfigs[i].isDefault()) { 2906 continue; 2907 } 2908 NetworkStateTracker nt = mNetTrackers[i]; 2909 if (nt.getNetworkInfo().isConnected() && 2910 !nt.isTeardownRequested()) { 2911 LinkProperties p = nt.getLinkProperties(); 2912 if (p == null) continue; 2913 if (mNetRequestersPids[i].contains(myPid)) { 2914 try { 2915 // TODO: Reimplement this via local variable in bionic. 2916 // mNetd.setDnsNetworkForPid(nt.getNetwork().netId, pid); 2917 } catch (Exception e) { 2918 Slog.e(TAG, "exception reasseses pid dns: " + e); 2919 } 2920 return; 2921 } 2922 } 2923 } 2924 // nothing found - delete 2925 try { 2926 // TODO: Reimplement this via local variable in bionic. 2927 // mNetd.clearDnsNetworkForPid(pid); 2928 } catch (Exception e) { 2929 Slog.e(TAG, "exception clear interface from pid: " + e); 2930 } 2931 } 2932 2933 private void flushVmDnsCache() { 2934 /* 2935 * Tell the VMs to toss their DNS caches 2936 */ 2937 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 2938 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 2939 /* 2940 * Connectivity events can happen before boot has completed ... 2941 */ 2942 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2943 final long ident = Binder.clearCallingIdentity(); 2944 try { 2945 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 2946 } finally { 2947 Binder.restoreCallingIdentity(ident); 2948 } 2949 } 2950 2951 // Caller must grab mDnsLock. 2952 private void updateDnsLocked(String network, int netId, 2953 Collection<InetAddress> dnses, String domains) { 2954 int last = 0; 2955 if (dnses.size() == 0 && mDefaultDns != null) { 2956 dnses = new ArrayList(); 2957 dnses.add(mDefaultDns); 2958 if (DBG) { 2959 loge("no dns provided for " + network + " - using " + mDefaultDns.getHostAddress()); 2960 } 2961 } 2962 2963 try { 2964 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), domains); 2965 2966 for (InetAddress dns : dnses) { 2967 ++last; 2968 String key = "net.dns" + last; 2969 String value = dns.getHostAddress(); 2970 SystemProperties.set(key, value); 2971 } 2972 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 2973 String key = "net.dns" + i; 2974 SystemProperties.set(key, ""); 2975 } 2976 mNumDnsEntries = last; 2977 } catch (Exception e) { 2978 loge("exception setting default dns interface: " + e); 2979 } 2980 } 2981 2982 private void handleDnsConfigurationChange(int netType) { 2983 // add default net's dns entries 2984 NetworkStateTracker nt = mNetTrackers[netType]; 2985 if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) { 2986 LinkProperties p = nt.getLinkProperties(); 2987 if (p == null) return; 2988 Collection<InetAddress> dnses = p.getDnsServers(); 2989 int netId = nt.getNetwork().netId; 2990 if (mNetConfigs[netType].isDefault()) { 2991 String network = nt.getNetworkInfo().getTypeName(); 2992 synchronized (mDnsLock) { 2993 updateDnsLocked(network, netId, dnses, p.getDomains()); 2994 } 2995 } else { 2996 try { 2997 mNetd.setDnsServersForNetwork(netId, 2998 NetworkUtils.makeStrings(dnses), p.getDomains()); 2999 } catch (Exception e) { 3000 if (DBG) loge("exception setting dns servers: " + e); 3001 } 3002 // set per-pid dns for attached secondary nets 3003 List<Integer> pids = mNetRequestersPids[netType]; 3004 for (Integer pid : pids) { 3005 try { 3006 // TODO: Reimplement this via local variable in bionic. 3007 // mNetd.setDnsNetworkForPid(netId, pid); 3008 } catch (Exception e) { 3009 Slog.e(TAG, "exception setting interface for pid: " + e); 3010 } 3011 } 3012 } 3013 flushVmDnsCache(); 3014 } 3015 } 3016 3017 @Override 3018 public int getRestoreDefaultNetworkDelay(int networkType) { 3019 String restoreDefaultNetworkDelayStr = SystemProperties.get( 3020 NETWORK_RESTORE_DELAY_PROP_NAME); 3021 if(restoreDefaultNetworkDelayStr != null && 3022 restoreDefaultNetworkDelayStr.length() != 0) { 3023 try { 3024 return Integer.valueOf(restoreDefaultNetworkDelayStr); 3025 } catch (NumberFormatException e) { 3026 } 3027 } 3028 // if the system property isn't set, use the value for the apn type 3029 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 3030 3031 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 3032 (mNetConfigs[networkType] != null)) { 3033 ret = mNetConfigs[networkType].restoreTime; 3034 } 3035 return ret; 3036 } 3037 3038 @Override 3039 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 3040 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 3041 if (mContext.checkCallingOrSelfPermission( 3042 android.Manifest.permission.DUMP) 3043 != PackageManager.PERMISSION_GRANTED) { 3044 pw.println("Permission Denial: can't dump ConnectivityService " + 3045 "from from pid=" + Binder.getCallingPid() + ", uid=" + 3046 Binder.getCallingUid()); 3047 return; 3048 } 3049 3050 pw.println("NetworkFactories for:"); 3051 pw.increaseIndent(); 3052 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3053 pw.println(nfi.name); 3054 } 3055 pw.decreaseIndent(); 3056 pw.println(); 3057 3058 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 3059 pw.print("Active default network: "); 3060 if (defaultNai == null) { 3061 pw.println("none"); 3062 } else { 3063 pw.println(defaultNai.network.netId); 3064 } 3065 pw.println(); 3066 3067 pw.println("Current Networks:"); 3068 pw.increaseIndent(); 3069 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 3070 pw.println(nai.toString()); 3071 pw.increaseIndent(); 3072 pw.println("Requests:"); 3073 pw.increaseIndent(); 3074 for (int i = 0; i < nai.networkRequests.size(); i++) { 3075 pw.println(nai.networkRequests.valueAt(i).toString()); 3076 } 3077 pw.decreaseIndent(); 3078 pw.println("Lingered:"); 3079 pw.increaseIndent(); 3080 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 3081 pw.decreaseIndent(); 3082 pw.decreaseIndent(); 3083 } 3084 pw.decreaseIndent(); 3085 pw.println(); 3086 3087 pw.println("Network Requests:"); 3088 pw.increaseIndent(); 3089 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3090 pw.println(nri.toString()); 3091 } 3092 pw.println(); 3093 pw.decreaseIndent(); 3094 3095 synchronized (this) { 3096 pw.println("NetworkTranstionWakeLock is currently " + 3097 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 3098 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 3099 } 3100 pw.println(); 3101 3102 mTethering.dump(fd, pw, args); 3103 3104 if (mInetLog != null) { 3105 pw.println(); 3106 pw.println("Inet condition reports:"); 3107 pw.increaseIndent(); 3108 for(int i = 0; i < mInetLog.size(); i++) { 3109 pw.println(mInetLog.get(i)); 3110 } 3111 pw.decreaseIndent(); 3112 } 3113 } 3114 3115 // must be stateless - things change under us. 3116 private class NetworkStateTrackerHandler extends Handler { 3117 public NetworkStateTrackerHandler(Looper looper) { 3118 super(looper); 3119 } 3120 3121 @Override 3122 public void handleMessage(Message msg) { 3123 NetworkInfo info; 3124 switch (msg.what) { 3125 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 3126 handleAsyncChannelHalfConnect(msg); 3127 break; 3128 } 3129 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 3130 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3131 if (nai != null) nai.asyncChannel.disconnect(); 3132 break; 3133 } 3134 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 3135 handleAsyncChannelDisconnected(msg); 3136 break; 3137 } 3138 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 3139 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3140 if (nai == null) { 3141 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 3142 } else { 3143 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 3144 } 3145 break; 3146 } 3147 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 3148 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3149 if (nai == null) { 3150 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 3151 } else { 3152 if (VDBG) log("Update of Linkproperties for " + nai.name()); 3153 LinkProperties oldLp = nai.linkProperties; 3154 synchronized (nai) { 3155 nai.linkProperties = (LinkProperties)msg.obj; 3156 } 3157 updateLinkProperties(nai, oldLp); 3158 } 3159 break; 3160 } 3161 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 3162 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3163 if (nai == null) { 3164 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 3165 break; 3166 } 3167 info = (NetworkInfo) msg.obj; 3168 updateNetworkInfo(nai, info); 3169 break; 3170 } 3171 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 3172 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3173 if (nai == null) { 3174 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 3175 break; 3176 } 3177 Integer score = (Integer) msg.obj; 3178 if (score != null) updateNetworkScore(nai, score.intValue()); 3179 break; 3180 } 3181 case NetworkMonitor.EVENT_NETWORK_VALIDATED: { 3182 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 3183 handleConnectionValidated(nai); 3184 break; 3185 } 3186 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 3187 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 3188 handleLingerComplete(nai); 3189 break; 3190 } 3191 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 3192 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3193 if (nai == null) { 3194 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 3195 break; 3196 } 3197 setProvNotificationVisibleIntent(msg.arg1 != 0, nai.networkInfo.getType(), 3198 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 3199 break; 3200 } 3201 case NetworkStateTracker.EVENT_STATE_CHANGED: { 3202 info = (NetworkInfo) msg.obj; 3203 NetworkInfo.State state = info.getState(); 3204 3205 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 3206 (state == NetworkInfo.State.DISCONNECTED) || 3207 (state == NetworkInfo.State.SUSPENDED)) { 3208 log("ConnectivityChange for " + 3209 info.getTypeName() + ": " + 3210 state + "/" + info.getDetailedState()); 3211 } 3212 3213 // Since mobile has the notion of a network/apn that can be used for 3214 // provisioning we need to check every time we're connected as 3215 // CaptiveProtalTracker won't detected it because DCT doesn't report it 3216 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 3217 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 3218 // is received by MDST and sent here as EVENT_STATE_CHANGED. 3219 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 3220 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 3221 Settings.Global.DEVICE_PROVISIONED, 0)) 3222 && (((state == NetworkInfo.State.CONNECTED) 3223 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 3224 || info.isConnectedToProvisioningNetwork())) { 3225 log("ConnectivityChange checkMobileProvisioning for" 3226 + " TYPE_MOBILE or ProvisioningNetwork"); 3227 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 3228 } 3229 3230 EventLogTags.writeConnectivityStateChanged( 3231 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 3232 3233 if (info.isConnectedToProvisioningNetwork()) { 3234 /** 3235 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 3236 * for now its an in between network, its a network that 3237 * is actually a default network but we don't want it to be 3238 * announced as such to keep background applications from 3239 * trying to use it. It turns out that some still try so we 3240 * take the additional step of clearing any default routes 3241 * to the link that may have incorrectly setup by the lower 3242 * levels. 3243 */ 3244 LinkProperties lp = getLinkPropertiesForTypeInternal(info.getType()); 3245 if (DBG) { 3246 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 3247 } 3248 3249 // Clear any default routes setup by the radio so 3250 // any activity by applications trying to use this 3251 // connection will fail until the provisioning network 3252 // is enabled. 3253 for (RouteInfo r : lp.getRoutes()) { 3254 removeRoute(lp, r, TO_DEFAULT_TABLE, 3255 mNetTrackers[info.getType()].getNetwork().netId); 3256 } 3257 } else if (state == NetworkInfo.State.DISCONNECTED) { 3258 } else if (state == NetworkInfo.State.SUSPENDED) { 3259 } else if (state == NetworkInfo.State.CONNECTED) { 3260 // handleConnect(info); 3261 } 3262 if (mLockdownTracker != null) { 3263 mLockdownTracker.onNetworkInfoChanged(info); 3264 } 3265 break; 3266 } 3267 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 3268 info = (NetworkInfo) msg.obj; 3269 // TODO: Temporary allowing network configuration 3270 // change not resetting sockets. 3271 // @see bug/4455071 3272 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 3273 false); 3274 break; 3275 } 3276 case NetworkStateTracker.EVENT_NETWORK_SUBTYPE_CHANGED: { 3277 info = (NetworkInfo) msg.obj; 3278 int type = info.getType(); 3279 if (mNetConfigs[type].isDefault()) updateNetworkSettings(mNetTrackers[type]); 3280 break; 3281 } 3282 } 3283 } 3284 } 3285 3286 private void handleAsyncChannelHalfConnect(Message msg) { 3287 AsyncChannel ac = (AsyncChannel) msg.obj; 3288 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 3289 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3290 if (VDBG) log("NetworkFactory connected"); 3291 // A network factory has connected. Send it all current NetworkRequests. 3292 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3293 if (nri.isRequest == false) continue; 3294 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 3295 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 3296 (nai != null ? nai.currentScore : 0), 0, nri.request); 3297 } 3298 } else { 3299 loge("Error connecting NetworkFactory"); 3300 mNetworkFactoryInfos.remove(msg.obj); 3301 } 3302 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 3303 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3304 if (VDBG) log("NetworkAgent connected"); 3305 // A network agent has requested a connection. Establish the connection. 3306 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 3307 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 3308 } else { 3309 loge("Error connecting NetworkAgent"); 3310 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 3311 if (nai != null) { 3312 synchronized (mNetworkForNetId) { 3313 mNetworkForNetId.remove(nai.network.netId); 3314 } 3315 mLegacyTypeTracker.remove(nai); 3316 } 3317 } 3318 } 3319 } 3320 private void handleAsyncChannelDisconnected(Message msg) { 3321 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3322 if (nai != null) { 3323 if (DBG) { 3324 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 3325 } 3326 // A network agent has disconnected. 3327 // Tell netd to clean up the configuration for this network 3328 // (routing rules, DNS, etc). 3329 try { 3330 mNetd.removeNetwork(nai.network.netId); 3331 } catch (Exception e) { 3332 loge("Exception removing network: " + e); 3333 } 3334 // TODO - if we move the logic to the network agent (have them disconnect 3335 // because they lost all their requests or because their score isn't good) 3336 // then they would disconnect organically, report their new state and then 3337 // disconnect the channel. 3338 if (nai.networkInfo.isConnected()) { 3339 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 3340 null, null); 3341 } 3342 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 3343 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 3344 mNetworkAgentInfos.remove(msg.replyTo); 3345 updateClat(null, nai.linkProperties, nai); 3346 mLegacyTypeTracker.remove(nai); 3347 synchronized (mNetworkForNetId) { 3348 mNetworkForNetId.remove(nai.network.netId); 3349 } 3350 // Since we've lost the network, go through all the requests that 3351 // it was satisfying and see if any other factory can satisfy them. 3352 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 3353 for (int i = 0; i < nai.networkRequests.size(); i++) { 3354 NetworkRequest request = nai.networkRequests.valueAt(i); 3355 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 3356 if (VDBG) { 3357 log(" checking request " + request + ", currentNetwork = " + 3358 (currentNetwork != null ? currentNetwork.name() : "null")); 3359 } 3360 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 3361 mNetworkForRequestId.remove(request.requestId); 3362 sendUpdatedScoreToFactories(request, 0); 3363 NetworkAgentInfo alternative = null; 3364 for (Map.Entry entry : mNetworkAgentInfos.entrySet()) { 3365 NetworkAgentInfo existing = (NetworkAgentInfo)entry.getValue(); 3366 if (existing.networkInfo.isConnected() && 3367 request.networkCapabilities.satisfiedByNetworkCapabilities( 3368 existing.networkCapabilities) && 3369 (alternative == null || 3370 alternative.currentScore < existing.currentScore)) { 3371 alternative = existing; 3372 } 3373 } 3374 if (alternative != null && !toActivate.contains(alternative)) { 3375 toActivate.add(alternative); 3376 } 3377 } 3378 } 3379 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 3380 removeDataActivityTracking(nai); 3381 mActiveDefaultNetwork = ConnectivityManager.TYPE_NONE; 3382 requestNetworkTransitionWakelock(nai.name()); 3383 } 3384 for (NetworkAgentInfo networkToActivate : toActivate) { 3385 networkToActivate.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 3386 } 3387 } 3388 } 3389 3390 private void handleRegisterNetworkRequest(Message msg) { 3391 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 3392 final NetworkCapabilities newCap = nri.request.networkCapabilities; 3393 int score = 0; 3394 3395 // Check for the best currently alive network that satisfies this request 3396 NetworkAgentInfo bestNetwork = null; 3397 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 3398 if (VDBG) log("handleRegisterNetworkRequest checking " + network.name()); 3399 if (newCap.satisfiedByNetworkCapabilities(network.networkCapabilities)) { 3400 if (VDBG) log("apparently satisfied. currentScore=" + network.currentScore); 3401 if ((bestNetwork == null) || bestNetwork.currentScore < network.currentScore) { 3402 bestNetwork = network; 3403 } 3404 } 3405 } 3406 if (bestNetwork != null) { 3407 if (VDBG) log("using " + bestNetwork.name()); 3408 if (nri.isRequest && bestNetwork.networkInfo.isConnected()) { 3409 // Cancel any lingering so the linger timeout doesn't teardown this network 3410 // even though we have a request for it. 3411 bestNetwork.networkLingered.clear(); 3412 bestNetwork.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 3413 } 3414 bestNetwork.addRequest(nri.request); 3415 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 3416 int legacyType = nri.request.legacyType; 3417 if (legacyType != TYPE_NONE) { 3418 mLegacyTypeTracker.add(legacyType, bestNetwork); 3419 } 3420 notifyNetworkCallback(bestNetwork, nri); 3421 score = bestNetwork.currentScore; 3422 } 3423 mNetworkRequests.put(nri.request, nri); 3424 if (msg.what == EVENT_REGISTER_NETWORK_REQUEST) { 3425 if (DBG) log("sending new NetworkRequest to factories"); 3426 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3427 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 3428 0, nri.request); 3429 } 3430 } 3431 } 3432 3433 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 3434 NetworkRequestInfo nri = mNetworkRequests.get(request); 3435 if (nri != null) { 3436 if (nri.mUid != callingUid) { 3437 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 3438 return; 3439 } 3440 if (DBG) log("releasing NetworkRequest " + request); 3441 mNetworkRequests.remove(request); 3442 // tell the network currently servicing this that it's no longer interested 3443 NetworkAgentInfo affectedNetwork = mNetworkForRequestId.get(nri.request.requestId); 3444 if (affectedNetwork != null) { 3445 mNetworkForRequestId.remove(nri.request.requestId); 3446 affectedNetwork.networkRequests.remove(nri.request.requestId); 3447 if (VDBG) { 3448 log(" Removing from current network " + affectedNetwork.name() + ", leaving " + 3449 affectedNetwork.networkRequests.size() + " requests."); 3450 } 3451 } 3452 3453 if (nri.isRequest) { 3454 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3455 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 3456 nri.request); 3457 } 3458 3459 if (affectedNetwork != null) { 3460 // check if this network still has live requests - otherwise, tear down 3461 // TODO - probably push this to the NF/NA 3462 boolean keep = false; 3463 for (int i = 0; i < affectedNetwork.networkRequests.size(); i++) { 3464 NetworkRequest r = affectedNetwork.networkRequests.valueAt(i); 3465 if (mNetworkRequests.get(r).isRequest) { 3466 keep = true; 3467 break; 3468 } 3469 } 3470 if (keep == false) { 3471 if (DBG) log("no live requests for " + affectedNetwork.name() + 3472 "; disconnecting"); 3473 affectedNetwork.asyncChannel.disconnect(); 3474 } 3475 } 3476 } 3477 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 3478 } 3479 } 3480 3481 private class InternalHandler extends Handler { 3482 public InternalHandler(Looper looper) { 3483 super(looper); 3484 } 3485 3486 @Override 3487 public void handleMessage(Message msg) { 3488 NetworkInfo info; 3489 switch (msg.what) { 3490 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 3491 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 3492 String causedBy = null; 3493 synchronized (ConnectivityService.this) { 3494 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 3495 mNetTransitionWakeLock.isHeld()) { 3496 mNetTransitionWakeLock.release(); 3497 causedBy = mNetTransitionWakeLockCausedBy; 3498 } else { 3499 break; 3500 } 3501 } 3502 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 3503 log("Failed to find a new network - expiring NetTransition Wakelock"); 3504 } else { 3505 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 3506 " cleared because we found a replacement network"); 3507 } 3508 break; 3509 } 3510 case EVENT_RESTORE_DEFAULT_NETWORK: { 3511 FeatureUser u = (FeatureUser)msg.obj; 3512 u.expire(); 3513 break; 3514 } 3515 case EVENT_INET_CONDITION_CHANGE: { 3516 int netType = msg.arg1; 3517 int condition = msg.arg2; 3518 handleInetConditionChange(netType, condition); 3519 break; 3520 } 3521 case EVENT_INET_CONDITION_HOLD_END: { 3522 int netType = msg.arg1; 3523 int sequence = msg.arg2; 3524 handleInetConditionHoldEnd(netType, sequence); 3525 break; 3526 } 3527 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 3528 handleDeprecatedGlobalHttpProxy(); 3529 break; 3530 } 3531 case EVENT_SET_DEPENDENCY_MET: { 3532 boolean met = (msg.arg1 == ENABLED); 3533 handleSetDependencyMet(msg.arg2, met); 3534 break; 3535 } 3536 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 3537 Intent intent = (Intent)msg.obj; 3538 sendStickyBroadcast(intent); 3539 break; 3540 } 3541 case EVENT_SET_POLICY_DATA_ENABLE: { 3542 final int networkType = msg.arg1; 3543 final boolean enabled = msg.arg2 == ENABLED; 3544 handleSetPolicyDataEnable(networkType, enabled); 3545 break; 3546 } 3547 case EVENT_VPN_STATE_CHANGED: { 3548 if (mLockdownTracker != null) { 3549 mLockdownTracker.onVpnStateChanged((NetworkInfo) msg.obj); 3550 } 3551 break; 3552 } 3553 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 3554 int tag = mEnableFailFastMobileDataTag.get(); 3555 if (msg.arg1 == tag) { 3556 MobileDataStateTracker mobileDst = 3557 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3558 if (mobileDst != null) { 3559 mobileDst.setEnableFailFastMobileData(msg.arg2); 3560 } 3561 } else { 3562 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 3563 + " != tag:" + tag); 3564 } 3565 break; 3566 } 3567 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 3568 handleNetworkSamplingTimeout(); 3569 break; 3570 } 3571 case EVENT_PROXY_HAS_CHANGED: { 3572 handleApplyDefaultProxy((ProxyInfo)msg.obj); 3573 break; 3574 } 3575 case EVENT_REGISTER_NETWORK_FACTORY: { 3576 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 3577 break; 3578 } 3579 case EVENT_UNREGISTER_NETWORK_FACTORY: { 3580 handleUnregisterNetworkFactory((Messenger)msg.obj); 3581 break; 3582 } 3583 case EVENT_REGISTER_NETWORK_AGENT: { 3584 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 3585 break; 3586 } 3587 case EVENT_REGISTER_NETWORK_REQUEST: 3588 case EVENT_REGISTER_NETWORK_LISTENER: { 3589 handleRegisterNetworkRequest(msg); 3590 break; 3591 } 3592 case EVENT_RELEASE_NETWORK_REQUEST: { 3593 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 3594 break; 3595 } 3596 } 3597 } 3598 } 3599 3600 // javadoc from interface 3601 public int tether(String iface) { 3602 enforceTetherChangePermission(); 3603 3604 if (isTetheringSupported()) { 3605 return mTethering.tether(iface); 3606 } else { 3607 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3608 } 3609 } 3610 3611 // javadoc from interface 3612 public int untether(String iface) { 3613 enforceTetherChangePermission(); 3614 3615 if (isTetheringSupported()) { 3616 return mTethering.untether(iface); 3617 } else { 3618 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3619 } 3620 } 3621 3622 // javadoc from interface 3623 public int getLastTetherError(String iface) { 3624 enforceTetherAccessPermission(); 3625 3626 if (isTetheringSupported()) { 3627 return mTethering.getLastTetherError(iface); 3628 } else { 3629 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3630 } 3631 } 3632 3633 // TODO - proper iface API for selection by property, inspection, etc 3634 public String[] getTetherableUsbRegexs() { 3635 enforceTetherAccessPermission(); 3636 if (isTetheringSupported()) { 3637 return mTethering.getTetherableUsbRegexs(); 3638 } else { 3639 return new String[0]; 3640 } 3641 } 3642 3643 public String[] getTetherableWifiRegexs() { 3644 enforceTetherAccessPermission(); 3645 if (isTetheringSupported()) { 3646 return mTethering.getTetherableWifiRegexs(); 3647 } else { 3648 return new String[0]; 3649 } 3650 } 3651 3652 public String[] getTetherableBluetoothRegexs() { 3653 enforceTetherAccessPermission(); 3654 if (isTetheringSupported()) { 3655 return mTethering.getTetherableBluetoothRegexs(); 3656 } else { 3657 return new String[0]; 3658 } 3659 } 3660 3661 public int setUsbTethering(boolean enable) { 3662 enforceTetherChangePermission(); 3663 if (isTetheringSupported()) { 3664 return mTethering.setUsbTethering(enable); 3665 } else { 3666 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3667 } 3668 } 3669 3670 // TODO - move iface listing, queries, etc to new module 3671 // javadoc from interface 3672 public String[] getTetherableIfaces() { 3673 enforceTetherAccessPermission(); 3674 return mTethering.getTetherableIfaces(); 3675 } 3676 3677 public String[] getTetheredIfaces() { 3678 enforceTetherAccessPermission(); 3679 return mTethering.getTetheredIfaces(); 3680 } 3681 3682 public String[] getTetheringErroredIfaces() { 3683 enforceTetherAccessPermission(); 3684 return mTethering.getErroredIfaces(); 3685 } 3686 3687 // if ro.tether.denied = true we default to no tethering 3688 // gservices could set the secure setting to 1 though to enable it on a build where it 3689 // had previously been turned off. 3690 public boolean isTetheringSupported() { 3691 enforceTetherAccessPermission(); 3692 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 3693 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 3694 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 3695 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 3696 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 3697 mTethering.getTetherableWifiRegexs().length != 0 || 3698 mTethering.getTetherableBluetoothRegexs().length != 0) && 3699 mTethering.getUpstreamIfaceTypes().length != 0); 3700 } 3701 3702 // Called when we lose the default network and have no replacement yet. 3703 // This will automatically be cleared after X seconds or a new default network 3704 // becomes CONNECTED, whichever happens first. The timer is started by the 3705 // first caller and not restarted by subsequent callers. 3706 private void requestNetworkTransitionWakelock(String forWhom) { 3707 int serialNum = 0; 3708 synchronized (this) { 3709 if (mNetTransitionWakeLock.isHeld()) return; 3710 serialNum = ++mNetTransitionWakeLockSerialNumber; 3711 mNetTransitionWakeLock.acquire(); 3712 mNetTransitionWakeLockCausedBy = forWhom; 3713 } 3714 mHandler.sendMessageDelayed(mHandler.obtainMessage( 3715 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 3716 mNetTransitionWakeLockTimeout); 3717 return; 3718 } 3719 3720 // 100 percent is full good, 0 is full bad. 3721 public void reportInetCondition(int networkType, int percentage) { 3722 if (VDBG) log("reportNetworkCondition(" + networkType + ", " + percentage + ")"); 3723 mContext.enforceCallingOrSelfPermission( 3724 android.Manifest.permission.STATUS_BAR, 3725 "ConnectivityService"); 3726 3727 if (DBG) { 3728 int pid = getCallingPid(); 3729 int uid = getCallingUid(); 3730 String s = pid + "(" + uid + ") reports inet is " + 3731 (percentage > 50 ? "connected" : "disconnected") + " (" + percentage + ") on " + 3732 "network Type " + networkType + " at " + GregorianCalendar.getInstance().getTime(); 3733 mInetLog.add(s); 3734 while(mInetLog.size() > INET_CONDITION_LOG_MAX_SIZE) { 3735 mInetLog.remove(0); 3736 } 3737 } 3738 mHandler.sendMessage(mHandler.obtainMessage( 3739 EVENT_INET_CONDITION_CHANGE, networkType, percentage)); 3740 } 3741 3742 public void reportBadNetwork(Network network) { 3743 //TODO 3744 } 3745 3746 private void handleInetConditionChange(int netType, int condition) { 3747 if (mActiveDefaultNetwork == -1) { 3748 if (DBG) log("handleInetConditionChange: no active default network - ignore"); 3749 return; 3750 } 3751 if (mActiveDefaultNetwork != netType) { 3752 if (DBG) log("handleInetConditionChange: net=" + netType + 3753 " != default=" + mActiveDefaultNetwork + " - ignore"); 3754 return; 3755 } 3756 if (VDBG) { 3757 log("handleInetConditionChange: net=" + 3758 netType + ", condition=" + condition + 3759 ",mActiveDefaultNetwork=" + mActiveDefaultNetwork); 3760 } 3761 mDefaultInetCondition = condition; 3762 int delay; 3763 if (mInetConditionChangeInFlight == false) { 3764 if (VDBG) log("handleInetConditionChange: starting a change hold"); 3765 // setup a new hold to debounce this 3766 if (mDefaultInetCondition > 50) { 3767 delay = Settings.Global.getInt(mContext.getContentResolver(), 3768 Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY, 500); 3769 } else { 3770 delay = Settings.Global.getInt(mContext.getContentResolver(), 3771 Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 3000); 3772 } 3773 mInetConditionChangeInFlight = true; 3774 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_INET_CONDITION_HOLD_END, 3775 mActiveDefaultNetwork, mDefaultConnectionSequence), delay); 3776 } else { 3777 // we've set the new condition, when this hold ends that will get picked up 3778 if (VDBG) log("handleInetConditionChange: currently in hold - not setting new end evt"); 3779 } 3780 } 3781 3782 private void handleInetConditionHoldEnd(int netType, int sequence) { 3783 if (DBG) { 3784 log("handleInetConditionHoldEnd: net=" + netType + 3785 ", condition=" + mDefaultInetCondition + 3786 ", published condition=" + mDefaultInetConditionPublished); 3787 } 3788 mInetConditionChangeInFlight = false; 3789 3790 if (mActiveDefaultNetwork == -1) { 3791 if (DBG) log("handleInetConditionHoldEnd: no active default network - ignoring"); 3792 return; 3793 } 3794 if (mDefaultConnectionSequence != sequence) { 3795 if (DBG) log("handleInetConditionHoldEnd: event hold for obsolete network - ignoring"); 3796 return; 3797 } 3798 // TODO: Figure out why this optimization sometimes causes a 3799 // change in mDefaultInetCondition to be missed and the 3800 // UI to not be updated. 3801 //if (mDefaultInetConditionPublished == mDefaultInetCondition) { 3802 // if (DBG) log("no change in condition - aborting"); 3803 // return; 3804 //} 3805 NetworkInfo networkInfo = getNetworkInfoForType(mActiveDefaultNetwork); 3806 if (networkInfo.isConnected() == false) { 3807 if (DBG) log("handleInetConditionHoldEnd: default network not connected - ignoring"); 3808 return; 3809 } 3810 mDefaultInetConditionPublished = mDefaultInetCondition; 3811 sendInetConditionBroadcast(networkInfo); 3812 return; 3813 } 3814 3815 public ProxyInfo getProxy() { 3816 // this information is already available as a world read/writable jvm property 3817 // so this API change wouldn't have a benifit. It also breaks the passing 3818 // of proxy info to all the JVMs. 3819 // enforceAccessPermission(); 3820 synchronized (mProxyLock) { 3821 ProxyInfo ret = mGlobalProxy; 3822 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 3823 return ret; 3824 } 3825 } 3826 3827 public void setGlobalProxy(ProxyInfo proxyProperties) { 3828 enforceConnectivityInternalPermission(); 3829 3830 synchronized (mProxyLock) { 3831 if (proxyProperties == mGlobalProxy) return; 3832 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 3833 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 3834 3835 String host = ""; 3836 int port = 0; 3837 String exclList = ""; 3838 String pacFileUrl = ""; 3839 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 3840 (proxyProperties.getPacFileUrl() != null))) { 3841 if (!proxyProperties.isValid()) { 3842 if (DBG) 3843 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3844 return; 3845 } 3846 mGlobalProxy = new ProxyInfo(proxyProperties); 3847 host = mGlobalProxy.getHost(); 3848 port = mGlobalProxy.getPort(); 3849 exclList = mGlobalProxy.getExclusionListAsString(); 3850 if (proxyProperties.getPacFileUrl() != null) { 3851 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 3852 } 3853 } else { 3854 mGlobalProxy = null; 3855 } 3856 ContentResolver res = mContext.getContentResolver(); 3857 final long token = Binder.clearCallingIdentity(); 3858 try { 3859 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 3860 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 3861 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 3862 exclList); 3863 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 3864 } finally { 3865 Binder.restoreCallingIdentity(token); 3866 } 3867 } 3868 3869 if (mGlobalProxy == null) { 3870 proxyProperties = mDefaultProxy; 3871 } 3872 sendProxyBroadcast(proxyProperties); 3873 } 3874 3875 private void loadGlobalProxy() { 3876 ContentResolver res = mContext.getContentResolver(); 3877 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 3878 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 3879 String exclList = Settings.Global.getString(res, 3880 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 3881 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 3882 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 3883 ProxyInfo proxyProperties; 3884 if (!TextUtils.isEmpty(pacFileUrl)) { 3885 proxyProperties = new ProxyInfo(pacFileUrl); 3886 } else { 3887 proxyProperties = new ProxyInfo(host, port, exclList); 3888 } 3889 if (!proxyProperties.isValid()) { 3890 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3891 return; 3892 } 3893 3894 synchronized (mProxyLock) { 3895 mGlobalProxy = proxyProperties; 3896 } 3897 } 3898 } 3899 3900 public ProxyInfo getGlobalProxy() { 3901 // this information is already available as a world read/writable jvm property 3902 // so this API change wouldn't have a benifit. It also breaks the passing 3903 // of proxy info to all the JVMs. 3904 // enforceAccessPermission(); 3905 synchronized (mProxyLock) { 3906 return mGlobalProxy; 3907 } 3908 } 3909 3910 private void handleApplyDefaultProxy(ProxyInfo proxy) { 3911 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3912 && (proxy.getPacFileUrl() == null)) { 3913 proxy = null; 3914 } 3915 synchronized (mProxyLock) { 3916 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3917 if (mDefaultProxy == proxy) return; // catches repeated nulls 3918 if (proxy != null && !proxy.isValid()) { 3919 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3920 return; 3921 } 3922 3923 // This call could be coming from the PacManager, containing the port of the local 3924 // proxy. If this new proxy matches the global proxy then copy this proxy to the 3925 // global (to get the correct local port), and send a broadcast. 3926 // TODO: Switch PacManager to have its own message to send back rather than 3927 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 3928 if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null) 3929 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 3930 mGlobalProxy = proxy; 3931 sendProxyBroadcast(mGlobalProxy); 3932 return; 3933 } 3934 mDefaultProxy = proxy; 3935 3936 if (mGlobalProxy != null) return; 3937 if (!mDefaultProxyDisabled) { 3938 sendProxyBroadcast(proxy); 3939 } 3940 } 3941 } 3942 3943 private void handleDeprecatedGlobalHttpProxy() { 3944 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3945 Settings.Global.HTTP_PROXY); 3946 if (!TextUtils.isEmpty(proxy)) { 3947 String data[] = proxy.split(":"); 3948 if (data.length == 0) { 3949 return; 3950 } 3951 3952 String proxyHost = data[0]; 3953 int proxyPort = 8080; 3954 if (data.length > 1) { 3955 try { 3956 proxyPort = Integer.parseInt(data[1]); 3957 } catch (NumberFormatException e) { 3958 return; 3959 } 3960 } 3961 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 3962 setGlobalProxy(p); 3963 } 3964 } 3965 3966 private void sendProxyBroadcast(ProxyInfo proxy) { 3967 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 3968 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3969 if (DBG) log("sending Proxy Broadcast for " + proxy); 3970 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3971 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3972 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3973 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3974 final long ident = Binder.clearCallingIdentity(); 3975 try { 3976 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3977 } finally { 3978 Binder.restoreCallingIdentity(ident); 3979 } 3980 } 3981 3982 private static class SettingsObserver extends ContentObserver { 3983 private int mWhat; 3984 private Handler mHandler; 3985 SettingsObserver(Handler handler, int what) { 3986 super(handler); 3987 mHandler = handler; 3988 mWhat = what; 3989 } 3990 3991 void observe(Context context) { 3992 ContentResolver resolver = context.getContentResolver(); 3993 resolver.registerContentObserver(Settings.Global.getUriFor( 3994 Settings.Global.HTTP_PROXY), false, this); 3995 } 3996 3997 @Override 3998 public void onChange(boolean selfChange) { 3999 mHandler.obtainMessage(mWhat).sendToTarget(); 4000 } 4001 } 4002 4003 private static void log(String s) { 4004 Slog.d(TAG, s); 4005 } 4006 4007 private static void loge(String s) { 4008 Slog.e(TAG, s); 4009 } 4010 4011 int convertFeatureToNetworkType(int networkType, String feature) { 4012 int usedNetworkType = networkType; 4013 4014 if(networkType == ConnectivityManager.TYPE_MOBILE) { 4015 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 4016 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 4017 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 4018 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 4019 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 4020 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 4021 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 4022 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 4023 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 4024 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 4025 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 4026 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 4027 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 4028 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 4029 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 4030 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_EMERGENCY)) { 4031 usedNetworkType = ConnectivityManager.TYPE_MOBILE_EMERGENCY; 4032 } else { 4033 Slog.e(TAG, "Can't match any mobile netTracker!"); 4034 } 4035 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 4036 if (TextUtils.equals(feature, "p2p")) { 4037 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 4038 } else { 4039 Slog.e(TAG, "Can't match any wifi netTracker!"); 4040 } 4041 } else { 4042 Slog.e(TAG, "Unexpected network type"); 4043 } 4044 return usedNetworkType; 4045 } 4046 4047 private static <T> T checkNotNull(T value, String message) { 4048 if (value == null) { 4049 throw new NullPointerException(message); 4050 } 4051 return value; 4052 } 4053 4054 /** 4055 * Protect a socket from VPN routing rules. This method is used by 4056 * VpnBuilder and not available in ConnectivityManager. Permissions 4057 * are checked in Vpn class. 4058 * @hide 4059 */ 4060 @Override 4061 public boolean protectVpn(ParcelFileDescriptor socket) { 4062 throwIfLockdownEnabled(); 4063 try { 4064 int type = mActiveDefaultNetwork; 4065 int user = UserHandle.getUserId(Binder.getCallingUid()); 4066 if (ConnectivityManager.isNetworkTypeValid(type) && mNetTrackers[type] != null) { 4067 synchronized(mVpns) { 4068 mVpns.get(user).protect(socket); 4069 } 4070 return true; 4071 } 4072 } catch (Exception e) { 4073 // ignore 4074 } finally { 4075 try { 4076 socket.close(); 4077 } catch (Exception e) { 4078 // ignore 4079 } 4080 } 4081 return false; 4082 } 4083 4084 /** 4085 * Prepare for a VPN application. This method is used by VpnDialogs 4086 * and not available in ConnectivityManager. Permissions are checked 4087 * in Vpn class. 4088 * @hide 4089 */ 4090 @Override 4091 public boolean prepareVpn(String oldPackage, String newPackage) { 4092 throwIfLockdownEnabled(); 4093 int user = UserHandle.getUserId(Binder.getCallingUid()); 4094 synchronized(mVpns) { 4095 return mVpns.get(user).prepare(oldPackage, newPackage); 4096 } 4097 } 4098 4099 @Override 4100 public void markSocketAsUser(ParcelFileDescriptor socket, int uid) { 4101 enforceMarkNetworkSocketPermission(); 4102 final long token = Binder.clearCallingIdentity(); 4103 try { 4104 int mark = mNetd.getMarkForUid(uid); 4105 // Clear the mark on the socket if no mark is needed to prevent socket reuse issues 4106 if (mark == -1) { 4107 mark = 0; 4108 } 4109 NetworkUtils.markSocket(socket.getFd(), mark); 4110 } catch (RemoteException e) { 4111 } finally { 4112 Binder.restoreCallingIdentity(token); 4113 } 4114 } 4115 4116 /** 4117 * Configure a TUN interface and return its file descriptor. Parameters 4118 * are encoded and opaque to this class. This method is used by VpnBuilder 4119 * and not available in ConnectivityManager. Permissions are checked in 4120 * Vpn class. 4121 * @hide 4122 */ 4123 @Override 4124 public ParcelFileDescriptor establishVpn(VpnConfig config) { 4125 throwIfLockdownEnabled(); 4126 int user = UserHandle.getUserId(Binder.getCallingUid()); 4127 synchronized(mVpns) { 4128 return mVpns.get(user).establish(config); 4129 } 4130 } 4131 4132 /** 4133 * Start legacy VPN, controlling native daemons as needed. Creates a 4134 * secondary thread to perform connection work, returning quickly. 4135 */ 4136 @Override 4137 public void startLegacyVpn(VpnProfile profile) { 4138 throwIfLockdownEnabled(); 4139 final LinkProperties egress = getActiveLinkProperties(); 4140 if (egress == null) { 4141 throw new IllegalStateException("Missing active network connection"); 4142 } 4143 int user = UserHandle.getUserId(Binder.getCallingUid()); 4144 synchronized(mVpns) { 4145 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 4146 } 4147 } 4148 4149 /** 4150 * Return the information of the ongoing legacy VPN. This method is used 4151 * by VpnSettings and not available in ConnectivityManager. Permissions 4152 * are checked in Vpn class. 4153 * @hide 4154 */ 4155 @Override 4156 public LegacyVpnInfo getLegacyVpnInfo() { 4157 throwIfLockdownEnabled(); 4158 int user = UserHandle.getUserId(Binder.getCallingUid()); 4159 synchronized(mVpns) { 4160 return mVpns.get(user).getLegacyVpnInfo(); 4161 } 4162 } 4163 4164 /** 4165 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 4166 * not available in ConnectivityManager. 4167 * Permissions are checked in Vpn class. 4168 * @hide 4169 */ 4170 @Override 4171 public VpnConfig getVpnConfig() { 4172 int user = UserHandle.getUserId(Binder.getCallingUid()); 4173 synchronized(mVpns) { 4174 return mVpns.get(user).getVpnConfig(); 4175 } 4176 } 4177 4178 /** 4179 * Callback for VPN subsystem. Currently VPN is not adapted to the service 4180 * through NetworkStateTracker since it works differently. For example, it 4181 * needs to override DNS servers but never takes the default routes. It 4182 * relies on another data network, and it could keep existing connections 4183 * alive after reconnecting, switching between networks, or even resuming 4184 * from deep sleep. Calls from applications should be done synchronously 4185 * to avoid race conditions. As these are all hidden APIs, refactoring can 4186 * be done whenever a better abstraction is developed. 4187 */ 4188 public class VpnCallback { 4189 private VpnCallback() { 4190 } 4191 4192 public void onStateChanged(NetworkInfo info) { 4193 mHandler.obtainMessage(EVENT_VPN_STATE_CHANGED, info).sendToTarget(); 4194 } 4195 4196 public void override(String iface, List<String> dnsServers, List<String> searchDomains) { 4197 if (dnsServers == null) { 4198 restore(); 4199 return; 4200 } 4201 4202 // Convert DNS servers into addresses. 4203 List<InetAddress> addresses = new ArrayList<InetAddress>(); 4204 for (String address : dnsServers) { 4205 // Double check the addresses and remove invalid ones. 4206 try { 4207 addresses.add(InetAddress.parseNumericAddress(address)); 4208 } catch (Exception e) { 4209 // ignore 4210 } 4211 } 4212 if (addresses.isEmpty()) { 4213 restore(); 4214 return; 4215 } 4216 4217 // Concatenate search domains into a string. 4218 StringBuilder buffer = new StringBuilder(); 4219 if (searchDomains != null) { 4220 for (String domain : searchDomains) { 4221 buffer.append(domain).append(' '); 4222 } 4223 } 4224 String domains = buffer.toString().trim(); 4225 4226 // Apply DNS changes. 4227 synchronized (mDnsLock) { 4228 // TODO: Re-enable this when the netId of the VPN is known. 4229 // updateDnsLocked("VPN", netId, addresses, domains); 4230 } 4231 4232 // Temporarily disable the default proxy (not global). 4233 synchronized (mProxyLock) { 4234 mDefaultProxyDisabled = true; 4235 if (mGlobalProxy == null && mDefaultProxy != null) { 4236 sendProxyBroadcast(null); 4237 } 4238 } 4239 4240 // TODO: support proxy per network. 4241 } 4242 4243 public void restore() { 4244 synchronized (mProxyLock) { 4245 mDefaultProxyDisabled = false; 4246 if (mGlobalProxy == null && mDefaultProxy != null) { 4247 sendProxyBroadcast(mDefaultProxy); 4248 } 4249 } 4250 } 4251 4252 public void protect(ParcelFileDescriptor socket) { 4253 try { 4254 final int mark = mNetd.getMarkForProtect(); 4255 NetworkUtils.markSocket(socket.getFd(), mark); 4256 } catch (RemoteException e) { 4257 } 4258 } 4259 4260 public void setRoutes(String interfaze, List<RouteInfo> routes) { 4261 for (RouteInfo route : routes) { 4262 try { 4263 mNetd.setMarkedForwardingRoute(interfaze, route); 4264 } catch (RemoteException e) { 4265 } 4266 } 4267 } 4268 4269 public void setMarkedForwarding(String interfaze) { 4270 try { 4271 mNetd.setMarkedForwarding(interfaze); 4272 } catch (RemoteException e) { 4273 } 4274 } 4275 4276 public void clearMarkedForwarding(String interfaze) { 4277 try { 4278 mNetd.clearMarkedForwarding(interfaze); 4279 } catch (RemoteException e) { 4280 } 4281 } 4282 4283 public void addUserForwarding(String interfaze, int uid, boolean forwardDns) { 4284 int uidStart = uid * UserHandle.PER_USER_RANGE; 4285 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 4286 addUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 4287 } 4288 4289 public void clearUserForwarding(String interfaze, int uid, boolean forwardDns) { 4290 int uidStart = uid * UserHandle.PER_USER_RANGE; 4291 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 4292 clearUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 4293 } 4294 4295 public void addUidForwarding(String interfaze, int uidStart, int uidEnd, 4296 boolean forwardDns) { 4297 // TODO: Re-enable this when the netId of the VPN is known. 4298 // try { 4299 // mNetd.setUidRangeRoute(netId, uidStart, uidEnd, forwardDns); 4300 // } catch (RemoteException e) { 4301 // } 4302 4303 } 4304 4305 public void clearUidForwarding(String interfaze, int uidStart, int uidEnd, 4306 boolean forwardDns) { 4307 // TODO: Re-enable this when the netId of the VPN is known. 4308 // try { 4309 // mNetd.clearUidRangeRoute(interfaze, uidStart, uidEnd); 4310 // } catch (RemoteException e) { 4311 // } 4312 4313 } 4314 } 4315 4316 @Override 4317 public boolean updateLockdownVpn() { 4318 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 4319 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 4320 return false; 4321 } 4322 4323 // Tear down existing lockdown if profile was removed 4324 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 4325 if (mLockdownEnabled) { 4326 if (!mKeyStore.isUnlocked()) { 4327 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 4328 return false; 4329 } 4330 4331 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 4332 final VpnProfile profile = VpnProfile.decode( 4333 profileName, mKeyStore.get(Credentials.VPN + profileName)); 4334 int user = UserHandle.getUserId(Binder.getCallingUid()); 4335 synchronized(mVpns) { 4336 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 4337 profile)); 4338 } 4339 } else { 4340 setLockdownTracker(null); 4341 } 4342 4343 return true; 4344 } 4345 4346 /** 4347 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 4348 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 4349 */ 4350 private void setLockdownTracker(LockdownVpnTracker tracker) { 4351 // Shutdown any existing tracker 4352 final LockdownVpnTracker existing = mLockdownTracker; 4353 mLockdownTracker = null; 4354 if (existing != null) { 4355 existing.shutdown(); 4356 } 4357 4358 try { 4359 if (tracker != null) { 4360 mNetd.setFirewallEnabled(true); 4361 mNetd.setFirewallInterfaceRule("lo", true); 4362 mLockdownTracker = tracker; 4363 mLockdownTracker.init(); 4364 } else { 4365 mNetd.setFirewallEnabled(false); 4366 } 4367 } catch (RemoteException e) { 4368 // ignored; NMS lives inside system_server 4369 } 4370 } 4371 4372 private void throwIfLockdownEnabled() { 4373 if (mLockdownEnabled) { 4374 throw new IllegalStateException("Unavailable in lockdown mode"); 4375 } 4376 } 4377 4378 public void supplyMessenger(int networkType, Messenger messenger) { 4379 enforceConnectivityInternalPermission(); 4380 4381 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 4382 mNetTrackers[networkType].supplyMessenger(messenger); 4383 } 4384 } 4385 4386 public int findConnectionTypeForIface(String iface) { 4387 enforceConnectivityInternalPermission(); 4388 4389 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 4390 for (NetworkStateTracker tracker : mNetTrackers) { 4391 if (tracker != null) { 4392 LinkProperties lp = tracker.getLinkProperties(); 4393 if (lp != null && iface.equals(lp.getInterfaceName())) { 4394 return tracker.getNetworkInfo().getType(); 4395 } 4396 } 4397 } 4398 return ConnectivityManager.TYPE_NONE; 4399 } 4400 4401 /** 4402 * Have mobile data fail fast if enabled. 4403 * 4404 * @param enabled DctConstants.ENABLED/DISABLED 4405 */ 4406 private void setEnableFailFastMobileData(int enabled) { 4407 int tag; 4408 4409 if (enabled == DctConstants.ENABLED) { 4410 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 4411 } else { 4412 tag = mEnableFailFastMobileDataTag.get(); 4413 } 4414 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 4415 enabled)); 4416 } 4417 4418 private boolean isMobileDataStateTrackerReady() { 4419 MobileDataStateTracker mdst = 4420 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4421 return (mdst != null) && (mdst.isReady()); 4422 } 4423 4424 /** 4425 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 4426 */ 4427 4428 /** 4429 * No connection was possible to the network. 4430 * This is NOT a warm sim. 4431 */ 4432 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 4433 4434 /** 4435 * A connection was made to the internet, all is well. 4436 * This is NOT a warm sim. 4437 */ 4438 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 4439 4440 /** 4441 * A connection was made but no dns server was available to resolve a name to address. 4442 * This is NOT a warm sim since provisioning network is supported. 4443 */ 4444 private static final int CMP_RESULT_CODE_NO_DNS = 2; 4445 4446 /** 4447 * A connection was made but could not open a TCP connection. 4448 * This is NOT a warm sim since provisioning network is supported. 4449 */ 4450 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 4451 4452 /** 4453 * A connection was made but there was a redirection, we appear to be in walled garden. 4454 * This is an indication of a warm sim on a mobile network such as T-Mobile. 4455 */ 4456 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 4457 4458 /** 4459 * The mobile network is a provisioning network. 4460 * This is an indication of a warm sim on a mobile network such as AT&T. 4461 */ 4462 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 4463 4464 /** 4465 * The mobile network is provisioning 4466 */ 4467 private static final int CMP_RESULT_CODE_IS_PROVISIONING = 6; 4468 4469 private AtomicBoolean mIsProvisioningNetwork = new AtomicBoolean(false); 4470 private AtomicBoolean mIsStartingProvisioning = new AtomicBoolean(false); 4471 4472 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 4473 4474 @Override 4475 public int checkMobileProvisioning(int suggestedTimeOutMs) { 4476 int timeOutMs = -1; 4477 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 4478 enforceConnectivityInternalPermission(); 4479 4480 final long token = Binder.clearCallingIdentity(); 4481 try { 4482 timeOutMs = suggestedTimeOutMs; 4483 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 4484 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 4485 } 4486 4487 // Check that mobile networks are supported 4488 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 4489 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 4490 if (DBG) log("checkMobileProvisioning: X no mobile network"); 4491 return timeOutMs; 4492 } 4493 4494 // If we're already checking don't do it again 4495 // TODO: Add a queue of results... 4496 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 4497 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 4498 return timeOutMs; 4499 } 4500 4501 // Start off with mobile notification off 4502 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4503 4504 CheckMp checkMp = new CheckMp(mContext, this); 4505 CheckMp.CallBack cb = new CheckMp.CallBack() { 4506 @Override 4507 void onComplete(Integer result) { 4508 if (DBG) log("CheckMp.onComplete: result=" + result); 4509 NetworkInfo ni = 4510 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 4511 switch(result) { 4512 case CMP_RESULT_CODE_CONNECTABLE: 4513 case CMP_RESULT_CODE_NO_CONNECTION: 4514 case CMP_RESULT_CODE_NO_DNS: 4515 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 4516 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 4517 break; 4518 } 4519 case CMP_RESULT_CODE_REDIRECTED: { 4520 if (DBG) log("CheckMp.onComplete: warm sim"); 4521 String url = getMobileProvisioningUrl(); 4522 if (TextUtils.isEmpty(url)) { 4523 url = getMobileRedirectedProvisioningUrl(); 4524 } 4525 if (TextUtils.isEmpty(url) == false) { 4526 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 4527 setProvNotificationVisible(true, 4528 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4529 url); 4530 } else { 4531 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 4532 } 4533 break; 4534 } 4535 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 4536 String url = getMobileProvisioningUrl(); 4537 if (TextUtils.isEmpty(url) == false) { 4538 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 4539 setProvNotificationVisible(true, 4540 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4541 url); 4542 // Mark that we've got a provisioning network and 4543 // Disable Mobile Data until user actually starts provisioning. 4544 mIsProvisioningNetwork.set(true); 4545 MobileDataStateTracker mdst = (MobileDataStateTracker) 4546 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4547 4548 // Disable radio until user starts provisioning 4549 mdst.setRadio(false); 4550 } else { 4551 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 4552 } 4553 break; 4554 } 4555 case CMP_RESULT_CODE_IS_PROVISIONING: { 4556 // FIXME: Need to know when provisioning is done. Probably we can 4557 // check the completion status if successful we're done if we 4558 // "timedout" or still connected to provisioning APN turn off data? 4559 if (DBG) log("CheckMp.onComplete: provisioning started"); 4560 mIsStartingProvisioning.set(false); 4561 break; 4562 } 4563 default: { 4564 loge("CheckMp.onComplete: ignore unexpected result=" + result); 4565 break; 4566 } 4567 } 4568 mIsCheckingMobileProvisioning.set(false); 4569 } 4570 }; 4571 CheckMp.Params params = 4572 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 4573 if (DBG) log("checkMobileProvisioning: params=" + params); 4574 // TODO: Reenable when calls to the now defunct 4575 // MobileDataStateTracker.isProvisioningNetwork() are removed. 4576 // This code should be moved to the Telephony code. 4577 // checkMp.execute(params); 4578 } finally { 4579 Binder.restoreCallingIdentity(token); 4580 if (DBG) log("checkMobileProvisioning: X"); 4581 } 4582 return timeOutMs; 4583 } 4584 4585 static class CheckMp extends 4586 AsyncTask<CheckMp.Params, Void, Integer> { 4587 private static final String CHECKMP_TAG = "CheckMp"; 4588 4589 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 4590 private static boolean mTestingFailures; 4591 4592 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 4593 private static final int MAX_LOOPS = 4; 4594 4595 // Number of milli-seconds to complete all of the retires 4596 public static final int MAX_TIMEOUT_MS = 60000; 4597 4598 // The socket should retry only 5 seconds, the default is longer 4599 private static final int SOCKET_TIMEOUT_MS = 5000; 4600 4601 // Sleep time for network errors 4602 private static final int NET_ERROR_SLEEP_SEC = 3; 4603 4604 // Sleep time for network route establishment 4605 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 4606 4607 // Short sleep time for polling :( 4608 private static final int POLLING_SLEEP_SEC = 1; 4609 4610 private Context mContext; 4611 private ConnectivityService mCs; 4612 private TelephonyManager mTm; 4613 private Params mParams; 4614 4615 /** 4616 * Parameters for AsyncTask.execute 4617 */ 4618 static class Params { 4619 private String mUrl; 4620 private long mTimeOutMs; 4621 private CallBack mCb; 4622 4623 Params(String url, long timeOutMs, CallBack cb) { 4624 mUrl = url; 4625 mTimeOutMs = timeOutMs; 4626 mCb = cb; 4627 } 4628 4629 @Override 4630 public String toString() { 4631 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 4632 } 4633 } 4634 4635 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 4636 // issued by name or ip address, for Google its by name so when we construct 4637 // this HostnameVerifier we'll pass the original Uri and use it to verify 4638 // the host. If the host name in the original uril fails we'll test the 4639 // hostname parameter just incase things change. 4640 static class CheckMpHostnameVerifier implements HostnameVerifier { 4641 Uri mOrgUri; 4642 4643 CheckMpHostnameVerifier(Uri orgUri) { 4644 mOrgUri = orgUri; 4645 } 4646 4647 @Override 4648 public boolean verify(String hostname, SSLSession session) { 4649 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 4650 String orgUriHost = mOrgUri.getHost(); 4651 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 4652 if (DBG) { 4653 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 4654 + " orgUriHost=" + orgUriHost); 4655 } 4656 return retVal; 4657 } 4658 } 4659 4660 /** 4661 * The call back object passed in Params. onComplete will be called 4662 * on the main thread. 4663 */ 4664 abstract static class CallBack { 4665 // Called on the main thread. 4666 abstract void onComplete(Integer result); 4667 } 4668 4669 public CheckMp(Context context, ConnectivityService cs) { 4670 if (Build.IS_DEBUGGABLE) { 4671 mTestingFailures = 4672 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 4673 } else { 4674 mTestingFailures = false; 4675 } 4676 4677 mContext = context; 4678 mCs = cs; 4679 4680 // Setup access to TelephonyService we'll be using. 4681 mTm = (TelephonyManager) mContext.getSystemService( 4682 Context.TELEPHONY_SERVICE); 4683 } 4684 4685 /** 4686 * Get the default url to use for the test. 4687 */ 4688 public String getDefaultUrl() { 4689 // See http://go/clientsdns for usage approval 4690 String server = Settings.Global.getString(mContext.getContentResolver(), 4691 Settings.Global.CAPTIVE_PORTAL_SERVER); 4692 if (server == null) { 4693 server = "clients3.google.com"; 4694 } 4695 return "http://" + server + "/generate_204"; 4696 } 4697 4698 /** 4699 * Detect if its possible to connect to the http url. DNS based detection techniques 4700 * do not work at all hotspots. The best way to check is to perform a request to 4701 * a known address that fetches the data we expect. 4702 */ 4703 private synchronized Integer isMobileOk(Params params) { 4704 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 4705 Uri orgUri = Uri.parse(params.mUrl); 4706 Random rand = new Random(); 4707 mParams = params; 4708 4709 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 4710 result = CMP_RESULT_CODE_NO_CONNECTION; 4711 log("isMobileOk: X not mobile capable result=" + result); 4712 return result; 4713 } 4714 4715 if (mCs.mIsStartingProvisioning.get()) { 4716 result = CMP_RESULT_CODE_IS_PROVISIONING; 4717 log("isMobileOk: X is provisioning result=" + result); 4718 return result; 4719 } 4720 4721 // See if we've already determined we've got a provisioning connection, 4722 // if so we don't need to do anything active. 4723 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 4724 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4725 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 4726 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 4727 4728 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 4729 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4730 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 4731 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 4732 4733 if (isDefaultProvisioning || isHipriProvisioning) { 4734 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4735 log("isMobileOk: X default || hipri is provisioning result=" + result); 4736 return result; 4737 } 4738 4739 try { 4740 // Continue trying to connect until time has run out 4741 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 4742 4743 if (!mCs.isMobileDataStateTrackerReady()) { 4744 // Wait for MobileDataStateTracker to be ready. 4745 if (DBG) log("isMobileOk: mdst is not ready"); 4746 while(SystemClock.elapsedRealtime() < endTime) { 4747 if (mCs.isMobileDataStateTrackerReady()) { 4748 // Enable fail fast as we'll do retries here and use a 4749 // hipri connection so the default connection stays active. 4750 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 4751 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 4752 break; 4753 } 4754 sleep(POLLING_SLEEP_SEC); 4755 } 4756 } 4757 4758 log("isMobileOk: start hipri url=" + params.mUrl); 4759 4760 // First wait until we can start using hipri 4761 Binder binder = new Binder(); 4762 while(SystemClock.elapsedRealtime() < endTime) { 4763 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4764 Phone.FEATURE_ENABLE_HIPRI, binder); 4765 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 4766 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 4767 log("isMobileOk: hipri started"); 4768 break; 4769 } 4770 if (VDBG) log("isMobileOk: hipri not started yet"); 4771 result = CMP_RESULT_CODE_NO_CONNECTION; 4772 sleep(POLLING_SLEEP_SEC); 4773 } 4774 4775 // Continue trying to connect until time has run out 4776 while(SystemClock.elapsedRealtime() < endTime) { 4777 try { 4778 // Wait for hipri to connect. 4779 // TODO: Don't poll and handle situation where hipri fails 4780 // because default is retrying. See b/9569540 4781 NetworkInfo.State state = mCs 4782 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4783 if (state != NetworkInfo.State.CONNECTED) { 4784 if (true/*VDBG*/) { 4785 log("isMobileOk: not connected ni=" + 4786 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4787 } 4788 sleep(POLLING_SLEEP_SEC); 4789 result = CMP_RESULT_CODE_NO_CONNECTION; 4790 continue; 4791 } 4792 4793 // Hipri has started check if this is a provisioning url 4794 MobileDataStateTracker mdst = (MobileDataStateTracker) 4795 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4796 if (mdst.isProvisioningNetwork()) { 4797 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4798 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 4799 return result; 4800 } else { 4801 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 4802 } 4803 4804 // Get of the addresses associated with the url host. We need to use the 4805 // address otherwise HttpURLConnection object will use the name to get 4806 // the addresses and will try every address but that will bypass the 4807 // route to host we setup and the connection could succeed as the default 4808 // interface might be connected to the internet via wifi or other interface. 4809 InetAddress[] addresses; 4810 try { 4811 addresses = InetAddress.getAllByName(orgUri.getHost()); 4812 } catch (UnknownHostException e) { 4813 result = CMP_RESULT_CODE_NO_DNS; 4814 log("isMobileOk: X UnknownHostException result=" + result); 4815 return result; 4816 } 4817 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 4818 4819 // Get the type of addresses supported by this link 4820 LinkProperties lp = mCs.getLinkPropertiesForTypeInternal( 4821 ConnectivityManager.TYPE_MOBILE_HIPRI); 4822 boolean linkHasIpv4 = lp.hasIPv4Address(); 4823 boolean linkHasIpv6 = lp.hasGlobalIPv6Address(); 4824 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 4825 + " linkHasIpv6=" + linkHasIpv6); 4826 4827 final ArrayList<InetAddress> validAddresses = 4828 new ArrayList<InetAddress>(addresses.length); 4829 4830 for (InetAddress addr : addresses) { 4831 if (((addr instanceof Inet4Address) && linkHasIpv4) || 4832 ((addr instanceof Inet6Address) && linkHasIpv6)) { 4833 validAddresses.add(addr); 4834 } 4835 } 4836 4837 if (validAddresses.size() == 0) { 4838 return CMP_RESULT_CODE_NO_CONNECTION; 4839 } 4840 4841 int addrTried = 0; 4842 while (true) { 4843 // Loop through at most MAX_LOOPS valid addresses or until 4844 // we run out of time 4845 if (addrTried++ >= MAX_LOOPS) { 4846 log("isMobileOk: too many loops tried - giving up"); 4847 break; 4848 } 4849 if (SystemClock.elapsedRealtime() >= endTime) { 4850 log("isMobileOk: spend too much time - giving up"); 4851 break; 4852 } 4853 4854 InetAddress hostAddr = validAddresses.get(rand.nextInt( 4855 validAddresses.size())); 4856 4857 // Make a route to host so we check the specific interface. 4858 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 4859 hostAddr.getAddress(), null)) { 4860 // Wait a short time to be sure the route is established ?? 4861 log("isMobileOk:" 4862 + " wait to establish route to hostAddr=" + hostAddr); 4863 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 4864 } else { 4865 log("isMobileOk:" 4866 + " could not establish route to hostAddr=" + hostAddr); 4867 // Wait a short time before the next attempt 4868 sleep(NET_ERROR_SLEEP_SEC); 4869 continue; 4870 } 4871 4872 // Rewrite the url to have numeric address to use the specific route 4873 // using http for half the attempts and https for the other half. 4874 // Doing https first and http second as on a redirected walled garden 4875 // such as t-mobile uses we get a SocketTimeoutException: "SSL 4876 // handshake timed out" which we declare as 4877 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 4878 // having http second we will be using logic used for some time. 4879 URL newUrl; 4880 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 4881 newUrl = new URL(scheme, hostAddr.getHostAddress(), 4882 orgUri.getPath()); 4883 log("isMobileOk: newUrl=" + newUrl); 4884 4885 HttpURLConnection urlConn = null; 4886 try { 4887 // Open the connection set the request headers and get the response 4888 urlConn = (HttpURLConnection)newUrl.openConnection( 4889 java.net.Proxy.NO_PROXY); 4890 if (scheme.equals("https")) { 4891 ((HttpsURLConnection)urlConn).setHostnameVerifier( 4892 new CheckMpHostnameVerifier(orgUri)); 4893 } 4894 urlConn.setInstanceFollowRedirects(false); 4895 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 4896 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 4897 urlConn.setUseCaches(false); 4898 urlConn.setAllowUserInteraction(false); 4899 // Set the "Connection" to "Close" as by default "Keep-Alive" 4900 // is used which is useless in this case. 4901 urlConn.setRequestProperty("Connection", "close"); 4902 int responseCode = urlConn.getResponseCode(); 4903 4904 // For debug display the headers 4905 Map<String, List<String>> headers = urlConn.getHeaderFields(); 4906 log("isMobileOk: headers=" + headers); 4907 4908 // Close the connection 4909 urlConn.disconnect(); 4910 urlConn = null; 4911 4912 if (mTestingFailures) { 4913 // Pretend no connection, this tests using http and https 4914 result = CMP_RESULT_CODE_NO_CONNECTION; 4915 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 4916 continue; 4917 } 4918 4919 if (responseCode == 204) { 4920 // Return 4921 result = CMP_RESULT_CODE_CONNECTABLE; 4922 log("isMobileOk: X got expected responseCode=" + responseCode 4923 + " result=" + result); 4924 return result; 4925 } else { 4926 // Retry to be sure this was redirected, we've gotten 4927 // occasions where a server returned 200 even though 4928 // the device didn't have a "warm" sim. 4929 log("isMobileOk: not expected responseCode=" + responseCode); 4930 // TODO - it would be nice in the single-address case to do 4931 // another DNS resolve here, but flushing the cache is a bit 4932 // heavy-handed. 4933 result = CMP_RESULT_CODE_REDIRECTED; 4934 } 4935 } catch (Exception e) { 4936 log("isMobileOk: HttpURLConnection Exception" + e); 4937 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 4938 if (urlConn != null) { 4939 urlConn.disconnect(); 4940 urlConn = null; 4941 } 4942 sleep(NET_ERROR_SLEEP_SEC); 4943 continue; 4944 } 4945 } 4946 log("isMobileOk: X loops|timed out result=" + result); 4947 return result; 4948 } catch (Exception e) { 4949 log("isMobileOk: Exception e=" + e); 4950 continue; 4951 } 4952 } 4953 log("isMobileOk: timed out"); 4954 } finally { 4955 log("isMobileOk: F stop hipri"); 4956 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 4957 mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4958 Phone.FEATURE_ENABLE_HIPRI); 4959 4960 // Wait for hipri to disconnect. 4961 long endTime = SystemClock.elapsedRealtime() + 5000; 4962 4963 while(SystemClock.elapsedRealtime() < endTime) { 4964 NetworkInfo.State state = mCs 4965 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4966 if (state != NetworkInfo.State.DISCONNECTED) { 4967 if (VDBG) { 4968 log("isMobileOk: connected ni=" + 4969 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4970 } 4971 sleep(POLLING_SLEEP_SEC); 4972 continue; 4973 } 4974 } 4975 4976 log("isMobileOk: X result=" + result); 4977 } 4978 return result; 4979 } 4980 4981 @Override 4982 protected Integer doInBackground(Params... params) { 4983 return isMobileOk(params[0]); 4984 } 4985 4986 @Override 4987 protected void onPostExecute(Integer result) { 4988 log("onPostExecute: result=" + result); 4989 if ((mParams != null) && (mParams.mCb != null)) { 4990 mParams.mCb.onComplete(result); 4991 } 4992 } 4993 4994 private String inetAddressesToString(InetAddress[] addresses) { 4995 StringBuffer sb = new StringBuffer(); 4996 boolean firstTime = true; 4997 for(InetAddress addr : addresses) { 4998 if (firstTime) { 4999 firstTime = false; 5000 } else { 5001 sb.append(","); 5002 } 5003 sb.append(addr); 5004 } 5005 return sb.toString(); 5006 } 5007 5008 private void printNetworkInfo() { 5009 boolean hasIccCard = mTm.hasIccCard(); 5010 int simState = mTm.getSimState(); 5011 log("hasIccCard=" + hasIccCard 5012 + " simState=" + simState); 5013 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 5014 if (ni != null) { 5015 log("ni.length=" + ni.length); 5016 for (NetworkInfo netInfo: ni) { 5017 log("netInfo=" + netInfo.toString()); 5018 } 5019 } else { 5020 log("no network info ni=null"); 5021 } 5022 } 5023 5024 /** 5025 * Sleep for a few seconds then return. 5026 * @param seconds 5027 */ 5028 private static void sleep(int seconds) { 5029 long stopTime = System.nanoTime() + (seconds * 1000000000); 5030 long sleepTime; 5031 while ((sleepTime = stopTime - System.nanoTime()) > 0) { 5032 try { 5033 Thread.sleep(sleepTime / 1000000); 5034 } catch (InterruptedException ignored) { 5035 } 5036 } 5037 } 5038 5039 private static void log(String s) { 5040 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 5041 } 5042 } 5043 5044 // TODO: Move to ConnectivityManager and make public? 5045 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 5046 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 5047 5048 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 5049 @Override 5050 public void onReceive(Context context, Intent intent) { 5051 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 5052 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 5053 } 5054 } 5055 }; 5056 5057 private void handleMobileProvisioningAction(String url) { 5058 // Mark notification as not visible 5059 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 5060 5061 // Check airplane mode 5062 boolean isAirplaneModeOn = Settings.System.getInt(mContext.getContentResolver(), 5063 Settings.Global.AIRPLANE_MODE_ON, 0) == 1; 5064 // If provisioning network and not in airplane mode handle as a special case, 5065 // otherwise launch browser with the intent directly. 5066 if (mIsProvisioningNetwork.get() && !isAirplaneModeOn) { 5067 if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch"); 5068 mIsProvisioningNetwork.set(false); 5069// mIsStartingProvisioning.set(true); 5070// MobileDataStateTracker mdst = (MobileDataStateTracker) 5071// mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 5072 // Radio was disabled on CMP_RESULT_CODE_PROVISIONING_NETWORK, enable it here 5073// mdst.setRadio(true); 5074// mdst.setEnableFailFastMobileData(DctConstants.ENABLED); 5075// mdst.enableMobileProvisioning(url); 5076 } else { 5077 if (DBG) log("handleMobileProvisioningAction: not prov network"); 5078 mIsProvisioningNetwork.set(false); 5079 // Check for apps that can handle provisioning first 5080 Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP); 5081 provisioningIntent.addCategory(TelephonyIntents.CATEGORY_MCCMNC_PREFIX 5082 + mTelephonyManager.getSimOperator()); 5083 if (mContext.getPackageManager().resolveActivity(provisioningIntent, 0 /* flags */) 5084 != null) { 5085 provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 5086 Intent.FLAG_ACTIVITY_NEW_TASK); 5087 mContext.startActivity(provisioningIntent); 5088 } else { 5089 // If no apps exist, use standard URL ACTION_VIEW method 5090 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 5091 Intent.CATEGORY_APP_BROWSER); 5092 newIntent.setData(Uri.parse(url)); 5093 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 5094 Intent.FLAG_ACTIVITY_NEW_TASK); 5095 try { 5096 mContext.startActivity(newIntent); 5097 } catch (ActivityNotFoundException e) { 5098 loge("handleMobileProvisioningAction: startActivity failed" + e); 5099 } 5100 } 5101 } 5102 } 5103 5104 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 5105 private volatile boolean mIsNotificationVisible = false; 5106 5107 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 5108 String url) { 5109 if (DBG) { 5110 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 5111 + " extraInfo=" + extraInfo + " url=" + url); 5112 } 5113 Intent intent = null; 5114 PendingIntent pendingIntent = null; 5115 if (visible) { 5116 switch (networkType) { 5117 case ConnectivityManager.TYPE_WIFI: 5118 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 5119 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 5120 Intent.FLAG_ACTIVITY_NEW_TASK); 5121 pendingIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 5122 break; 5123 case ConnectivityManager.TYPE_MOBILE: 5124 case ConnectivityManager.TYPE_MOBILE_HIPRI: 5125 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 5126 intent.putExtra("EXTRA_URL", url); 5127 intent.setFlags(0); 5128 pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 5129 break; 5130 default: 5131 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 5132 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 5133 Intent.FLAG_ACTIVITY_NEW_TASK); 5134 pendingIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 5135 break; 5136 } 5137 } 5138 setProvNotificationVisibleIntent(visible, networkType, extraInfo, pendingIntent); 5139 } 5140 5141 private void setProvNotificationVisibleIntent(boolean visible, int networkType, 5142 String extraInfo, PendingIntent intent) { 5143 if (DBG) { 5144 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 5145 networkType + " extraInfo=" + extraInfo); 5146 } 5147 5148 Resources r = Resources.getSystem(); 5149 NotificationManager notificationManager = (NotificationManager) mContext 5150 .getSystemService(Context.NOTIFICATION_SERVICE); 5151 5152 if (visible) { 5153 CharSequence title; 5154 CharSequence details; 5155 int icon; 5156 Notification notification = new Notification(); 5157 switch (networkType) { 5158 case ConnectivityManager.TYPE_WIFI: 5159 title = r.getString(R.string.wifi_available_sign_in, 0); 5160 details = r.getString(R.string.network_available_sign_in_detailed, 5161 extraInfo); 5162 icon = R.drawable.stat_notify_wifi_in_range; 5163 break; 5164 case ConnectivityManager.TYPE_MOBILE: 5165 case ConnectivityManager.TYPE_MOBILE_HIPRI: 5166 title = r.getString(R.string.network_available_sign_in, 0); 5167 // TODO: Change this to pull from NetworkInfo once a printable 5168 // name has been added to it 5169 details = mTelephonyManager.getNetworkOperatorName(); 5170 icon = R.drawable.stat_notify_rssi_in_range; 5171 break; 5172 default: 5173 title = r.getString(R.string.network_available_sign_in, 0); 5174 details = r.getString(R.string.network_available_sign_in_detailed, 5175 extraInfo); 5176 icon = R.drawable.stat_notify_rssi_in_range; 5177 break; 5178 } 5179 5180 notification.when = 0; 5181 notification.icon = icon; 5182 notification.flags = Notification.FLAG_AUTO_CANCEL; 5183 notification.tickerText = title; 5184 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 5185 notification.contentIntent = intent; 5186 5187 try { 5188 notificationManager.notify(NOTIFICATION_ID, networkType, notification); 5189 } catch (NullPointerException npe) { 5190 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 5191 npe.printStackTrace(); 5192 } 5193 } else { 5194 try { 5195 notificationManager.cancel(NOTIFICATION_ID, networkType); 5196 } catch (NullPointerException npe) { 5197 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 5198 npe.printStackTrace(); 5199 } 5200 } 5201 mIsNotificationVisible = visible; 5202 } 5203 5204 /** Location to an updatable file listing carrier provisioning urls. 5205 * An example: 5206 * 5207 * <?xml version="1.0" encoding="utf-8"?> 5208 * <provisioningUrls> 5209 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 5210 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 5211 * </provisioningUrls> 5212 */ 5213 private static final String PROVISIONING_URL_PATH = 5214 "/data/misc/radio/provisioning_urls.xml"; 5215 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 5216 5217 /** XML tag for root element. */ 5218 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 5219 /** XML tag for individual url */ 5220 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 5221 /** XML tag for redirected url */ 5222 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 5223 /** XML attribute for mcc */ 5224 private static final String ATTR_MCC = "mcc"; 5225 /** XML attribute for mnc */ 5226 private static final String ATTR_MNC = "mnc"; 5227 5228 private static final int REDIRECTED_PROVISIONING = 1; 5229 private static final int PROVISIONING = 2; 5230 5231 private String getProvisioningUrlBaseFromFile(int type) { 5232 FileReader fileReader = null; 5233 XmlPullParser parser = null; 5234 Configuration config = mContext.getResources().getConfiguration(); 5235 String tagType; 5236 5237 switch (type) { 5238 case PROVISIONING: 5239 tagType = TAG_PROVISIONING_URL; 5240 break; 5241 case REDIRECTED_PROVISIONING: 5242 tagType = TAG_REDIRECTED_URL; 5243 break; 5244 default: 5245 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 5246 type); 5247 } 5248 5249 try { 5250 fileReader = new FileReader(mProvisioningUrlFile); 5251 parser = Xml.newPullParser(); 5252 parser.setInput(fileReader); 5253 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 5254 5255 while (true) { 5256 XmlUtils.nextElement(parser); 5257 5258 String element = parser.getName(); 5259 if (element == null) break; 5260 5261 if (element.equals(tagType)) { 5262 String mcc = parser.getAttributeValue(null, ATTR_MCC); 5263 try { 5264 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 5265 String mnc = parser.getAttributeValue(null, ATTR_MNC); 5266 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 5267 parser.next(); 5268 if (parser.getEventType() == XmlPullParser.TEXT) { 5269 return parser.getText(); 5270 } 5271 } 5272 } 5273 } catch (NumberFormatException e) { 5274 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 5275 } 5276 } 5277 } 5278 return null; 5279 } catch (FileNotFoundException e) { 5280 loge("Carrier Provisioning Urls file not found"); 5281 } catch (XmlPullParserException e) { 5282 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 5283 } catch (IOException e) { 5284 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 5285 } finally { 5286 if (fileReader != null) { 5287 try { 5288 fileReader.close(); 5289 } catch (IOException e) {} 5290 } 5291 } 5292 return null; 5293 } 5294 5295 @Override 5296 public String getMobileRedirectedProvisioningUrl() { 5297 enforceConnectivityInternalPermission(); 5298 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 5299 if (TextUtils.isEmpty(url)) { 5300 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 5301 } 5302 return url; 5303 } 5304 5305 @Override 5306 public String getMobileProvisioningUrl() { 5307 enforceConnectivityInternalPermission(); 5308 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 5309 if (TextUtils.isEmpty(url)) { 5310 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 5311 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 5312 } else { 5313 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 5314 } 5315 // populate the iccid, imei and phone number in the provisioning url. 5316 if (!TextUtils.isEmpty(url)) { 5317 String phoneNumber = mTelephonyManager.getLine1Number(); 5318 if (TextUtils.isEmpty(phoneNumber)) { 5319 phoneNumber = "0000000000"; 5320 } 5321 url = String.format(url, 5322 mTelephonyManager.getSimSerialNumber() /* ICCID */, 5323 mTelephonyManager.getDeviceId() /* IMEI */, 5324 phoneNumber /* Phone numer */); 5325 } 5326 5327 return url; 5328 } 5329 5330 @Override 5331 public void setProvisioningNotificationVisible(boolean visible, int networkType, 5332 String extraInfo, String url) { 5333 enforceConnectivityInternalPermission(); 5334 setProvNotificationVisible(visible, networkType, extraInfo, url); 5335 } 5336 5337 @Override 5338 public void setAirplaneMode(boolean enable) { 5339 enforceConnectivityInternalPermission(); 5340 final long ident = Binder.clearCallingIdentity(); 5341 try { 5342 final ContentResolver cr = mContext.getContentResolver(); 5343 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 5344 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 5345 intent.putExtra("state", enable); 5346 mContext.sendBroadcast(intent); 5347 } finally { 5348 Binder.restoreCallingIdentity(ident); 5349 } 5350 } 5351 5352 private void onUserStart(int userId) { 5353 synchronized(mVpns) { 5354 Vpn userVpn = mVpns.get(userId); 5355 if (userVpn != null) { 5356 loge("Starting user already has a VPN"); 5357 return; 5358 } 5359 userVpn = new Vpn(mContext, mVpnCallback, mNetd, this, userId); 5360 mVpns.put(userId, userVpn); 5361 userVpn.startMonitoring(mContext, mTrackerHandler); 5362 } 5363 } 5364 5365 private void onUserStop(int userId) { 5366 synchronized(mVpns) { 5367 Vpn userVpn = mVpns.get(userId); 5368 if (userVpn == null) { 5369 loge("Stopping user has no VPN"); 5370 return; 5371 } 5372 mVpns.delete(userId); 5373 } 5374 } 5375 5376 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 5377 @Override 5378 public void onReceive(Context context, Intent intent) { 5379 final String action = intent.getAction(); 5380 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 5381 if (userId == UserHandle.USER_NULL) return; 5382 5383 if (Intent.ACTION_USER_STARTING.equals(action)) { 5384 onUserStart(userId); 5385 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 5386 onUserStop(userId); 5387 } 5388 } 5389 }; 5390 5391 @Override 5392 public LinkQualityInfo getLinkQualityInfo(int networkType) { 5393 enforceAccessPermission(); 5394 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 5395 return mNetTrackers[networkType].getLinkQualityInfo(); 5396 } else { 5397 return null; 5398 } 5399 } 5400 5401 @Override 5402 public LinkQualityInfo getActiveLinkQualityInfo() { 5403 enforceAccessPermission(); 5404 if (isNetworkTypeValid(mActiveDefaultNetwork) && 5405 mNetTrackers[mActiveDefaultNetwork] != null) { 5406 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 5407 } else { 5408 return null; 5409 } 5410 } 5411 5412 @Override 5413 public LinkQualityInfo[] getAllLinkQualityInfo() { 5414 enforceAccessPermission(); 5415 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 5416 for (NetworkStateTracker tracker : mNetTrackers) { 5417 if (tracker != null) { 5418 LinkQualityInfo li = tracker.getLinkQualityInfo(); 5419 if (li != null) { 5420 result.add(li); 5421 } 5422 } 5423 } 5424 5425 return result.toArray(new LinkQualityInfo[result.size()]); 5426 } 5427 5428 /* Infrastructure for network sampling */ 5429 5430 private void handleNetworkSamplingTimeout() { 5431 5432 log("Sampling interval elapsed, updating statistics .."); 5433 5434 // initialize list of interfaces .. 5435 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 5436 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 5437 for (NetworkStateTracker tracker : mNetTrackers) { 5438 if (tracker != null) { 5439 String ifaceName = tracker.getNetworkInterfaceName(); 5440 if (ifaceName != null) { 5441 mapIfaceToSample.put(ifaceName, null); 5442 } 5443 } 5444 } 5445 5446 // Read samples for all interfaces 5447 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 5448 5449 // process samples for all networks 5450 for (NetworkStateTracker tracker : mNetTrackers) { 5451 if (tracker != null) { 5452 String ifaceName = tracker.getNetworkInterfaceName(); 5453 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 5454 if (ss != null) { 5455 // end the previous sampling cycle 5456 tracker.stopSampling(ss); 5457 // start a new sampling cycle .. 5458 tracker.startSampling(ss); 5459 } 5460 } 5461 } 5462 5463 log("Done."); 5464 5465 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 5466 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 5467 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 5468 5469 if (DBG) log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 5470 5471 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 5472 } 5473 5474 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 5475 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 5476 mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, wakeupTime, intent); 5477 } 5478 5479 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 5480 new HashMap<Messenger, NetworkFactoryInfo>(); 5481 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 5482 new HashMap<NetworkRequest, NetworkRequestInfo>(); 5483 5484 private static class NetworkFactoryInfo { 5485 public final String name; 5486 public final Messenger messenger; 5487 public final AsyncChannel asyncChannel; 5488 5489 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 5490 this.name = name; 5491 this.messenger = messenger; 5492 this.asyncChannel = asyncChannel; 5493 } 5494 } 5495 5496 private class NetworkRequestInfo implements IBinder.DeathRecipient { 5497 static final boolean REQUEST = true; 5498 static final boolean LISTEN = false; 5499 5500 final NetworkRequest request; 5501 IBinder mBinder; 5502 final int mPid; 5503 final int mUid; 5504 final Messenger messenger; 5505 final boolean isRequest; 5506 5507 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 5508 super(); 5509 messenger = m; 5510 request = r; 5511 mBinder = binder; 5512 mPid = getCallingPid(); 5513 mUid = getCallingUid(); 5514 this.isRequest = isRequest; 5515 5516 try { 5517 mBinder.linkToDeath(this, 0); 5518 } catch (RemoteException e) { 5519 binderDied(); 5520 } 5521 } 5522 5523 void unlinkDeathRecipient() { 5524 mBinder.unlinkToDeath(this, 0); 5525 } 5526 5527 public void binderDied() { 5528 log("ConnectivityService NetworkRequestInfo binderDied(" + 5529 request + ", " + mBinder + ")"); 5530 releaseNetworkRequest(request); 5531 } 5532 5533 public String toString() { 5534 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 5535 mPid + " for " + request; 5536 } 5537 } 5538 5539 @Override 5540 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 5541 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 5542 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 5543 == false) { 5544 enforceConnectivityInternalPermission(); 5545 } else { 5546 enforceChangePermission(); 5547 } 5548 5549 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 5550 throw new IllegalArgumentException("Bad timeout specified"); 5551 } 5552 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 5553 networkCapabilities), legacyType, nextNetworkRequestId()); 5554 if (DBG) log("requestNetwork for " + networkRequest); 5555 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 5556 NetworkRequestInfo.REQUEST); 5557 5558 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 5559 if (timeoutMs > 0) { 5560 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 5561 nri), timeoutMs); 5562 } 5563 return networkRequest; 5564 } 5565 5566 @Override 5567 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 5568 PendingIntent operation) { 5569 // TODO 5570 return null; 5571 } 5572 5573 @Override 5574 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 5575 Messenger messenger, IBinder binder) { 5576 enforceAccessPermission(); 5577 5578 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 5579 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 5580 if (DBG) log("listenForNetwork for " + networkRequest); 5581 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 5582 NetworkRequestInfo.LISTEN); 5583 5584 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 5585 return networkRequest; 5586 } 5587 5588 @Override 5589 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 5590 PendingIntent operation) { 5591 } 5592 5593 @Override 5594 public void releaseNetworkRequest(NetworkRequest networkRequest) { 5595 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 5596 0, networkRequest)); 5597 } 5598 5599 @Override 5600 public void registerNetworkFactory(Messenger messenger, String name) { 5601 enforceConnectivityInternalPermission(); 5602 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 5603 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 5604 } 5605 5606 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 5607 if (VDBG) log("Got NetworkFactory Messenger for " + nfi.name); 5608 mNetworkFactoryInfos.put(nfi.messenger, nfi); 5609 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 5610 } 5611 5612 @Override 5613 public void unregisterNetworkFactory(Messenger messenger) { 5614 enforceConnectivityInternalPermission(); 5615 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 5616 } 5617 5618 private void handleUnregisterNetworkFactory(Messenger messenger) { 5619 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 5620 if (nfi == null) { 5621 if (VDBG) log("Failed to find Messenger in unregisterNetworkFactory"); 5622 return; 5623 } 5624 if (VDBG) log("unregisterNetworkFactory for " + nfi.name); 5625 } 5626 5627 /** 5628 * NetworkAgentInfo supporting a request by requestId. 5629 * These have already been vetted (their Capabilities satisfy the request) 5630 * and the are the highest scored network available. 5631 * the are keyed off the Requests requestId. 5632 */ 5633 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 5634 new SparseArray<NetworkAgentInfo>(); 5635 5636 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 5637 new SparseArray<NetworkAgentInfo>(); 5638 5639 // NetworkAgentInfo keyed off its connecting messenger 5640 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 5641 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 5642 new HashMap<Messenger, NetworkAgentInfo>(); 5643 5644 private final NetworkRequest mDefaultRequest; 5645 5646 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 5647 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 5648 int currentScore) { 5649 enforceConnectivityInternalPermission(); 5650 5651 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), nextNetId(), 5652 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 5653 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler); 5654 if (VDBG) log("registerNetworkAgent " + nai); 5655 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 5656 } 5657 5658 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 5659 if (VDBG) log("Got NetworkAgent Messenger"); 5660 mNetworkAgentInfos.put(na.messenger, na); 5661 synchronized (mNetworkForNetId) { 5662 mNetworkForNetId.put(na.network.netId, na); 5663 } 5664 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 5665 NetworkInfo networkInfo = na.networkInfo; 5666 na.networkInfo = null; 5667 updateNetworkInfo(na, networkInfo); 5668 } 5669 5670 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 5671 LinkProperties newLp = networkAgent.linkProperties; 5672 int netId = networkAgent.network.netId; 5673 5674 updateInterfaces(newLp, oldLp, netId); 5675 updateMtu(newLp, oldLp); 5676 // TODO - figure out what to do for clat 5677// for (LinkProperties lp : newLp.getStackedLinks()) { 5678// updateMtu(lp, null); 5679// } 5680 updateRoutes(newLp, oldLp, netId); 5681 updateDnses(newLp, oldLp, netId); 5682 updateClat(newLp, oldLp, networkAgent); 5683 } 5684 5685 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo na) { 5686 // Update 464xlat state. 5687 if (mClat.requiresClat(na)) { 5688 5689 // If the connection was previously using clat, but is not using it now, stop the clat 5690 // daemon. Normally, this happens automatically when the connection disconnects, but if 5691 // the disconnect is not reported, or if the connection's LinkProperties changed for 5692 // some other reason (e.g., handoff changes the IP addresses on the link), it would 5693 // still be running. If it's not running, then stopping it is a no-op. 5694 if (Nat464Xlat.isRunningClat(oldLp) && !Nat464Xlat.isRunningClat(newLp)) { 5695 mClat.stopClat(); 5696 } 5697 // If the link requires clat to be running, then start the daemon now. 5698 if (na.networkInfo.isConnected()) { 5699 mClat.startClat(na); 5700 } else { 5701 mClat.stopClat(); 5702 } 5703 } 5704 } 5705 5706 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 5707 CompareResult<String> interfaceDiff = new CompareResult<String>(); 5708 if (oldLp != null) { 5709 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 5710 } else if (newLp != null) { 5711 interfaceDiff.added = newLp.getAllInterfaceNames(); 5712 } 5713 for (String iface : interfaceDiff.added) { 5714 try { 5715 mNetd.addInterfaceToNetwork(iface, netId); 5716 } catch (Exception e) { 5717 loge("Exception adding interface: " + e); 5718 } 5719 } 5720 for (String iface : interfaceDiff.removed) { 5721 try { 5722 mNetd.removeInterfaceFromNetwork(iface, netId); 5723 } catch (Exception e) { 5724 loge("Exception removing interface: " + e); 5725 } 5726 } 5727 } 5728 5729 private void updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 5730 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 5731 if (oldLp != null) { 5732 routeDiff = oldLp.compareAllRoutes(newLp); 5733 } else if (newLp != null) { 5734 routeDiff.added = newLp.getAllRoutes(); 5735 } 5736 5737 // add routes before removing old in case it helps with continuous connectivity 5738 5739 // do this twice, adding non-nexthop routes first, then routes they are dependent on 5740 for (RouteInfo route : routeDiff.added) { 5741 if (route.hasGateway()) continue; 5742 try { 5743 mNetd.addRoute(netId, route); 5744 } catch (Exception e) { 5745 loge("Exception in addRoute for non-gateway: " + e); 5746 } 5747 } 5748 for (RouteInfo route : routeDiff.added) { 5749 if (route.hasGateway() == false) continue; 5750 try { 5751 mNetd.addRoute(netId, route); 5752 } catch (Exception e) { 5753 loge("Exception in addRoute for gateway: " + e); 5754 } 5755 } 5756 5757 for (RouteInfo route : routeDiff.removed) { 5758 try { 5759 mNetd.removeRoute(netId, route); 5760 } catch (Exception e) { 5761 loge("Exception in removeRoute: " + e); 5762 } 5763 } 5764 } 5765 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId) { 5766 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 5767 Collection<InetAddress> dnses = newLp.getDnsServers(); 5768 if (dnses.size() == 0 && mDefaultDns != null) { 5769 dnses = new ArrayList(); 5770 dnses.add(mDefaultDns); 5771 if (DBG) { 5772 loge("no dns provided for netId " + netId + ", so using defaults"); 5773 } 5774 } 5775 try { 5776 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 5777 newLp.getDomains()); 5778 } catch (Exception e) { 5779 loge("Exception in setDnsServersForNetwork: " + e); 5780 } 5781 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 5782 if (defaultNai != null && defaultNai.network.netId == netId) { 5783 setDefaultDnsSystemProperties(dnses); 5784 } 5785 } 5786 } 5787 5788 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 5789 int last = 0; 5790 for (InetAddress dns : dnses) { 5791 ++last; 5792 String key = "net.dns" + last; 5793 String value = dns.getHostAddress(); 5794 SystemProperties.set(key, value); 5795 } 5796 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 5797 String key = "net.dns" + i; 5798 SystemProperties.set(key, ""); 5799 } 5800 mNumDnsEntries = last; 5801 } 5802 5803 5804 private void updateCapabilities(NetworkAgentInfo networkAgent, 5805 NetworkCapabilities networkCapabilities) { 5806 // TODO - what else here? Verify still satisfies everybody? 5807 // Check if satisfies somebody new? call callbacks? 5808 synchronized (networkAgent) { 5809 networkAgent.networkCapabilities = networkCapabilities; 5810 } 5811 } 5812 5813 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 5814 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 5815 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 5816 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 5817 networkRequest); 5818 } 5819 } 5820 5821 private void callCallbackForRequest(NetworkRequestInfo nri, 5822 NetworkAgentInfo networkAgent, int notificationType) { 5823 if (nri.messenger == null) return; // Default request has no msgr 5824 Object o; 5825 int a1 = 0; 5826 int a2 = 0; 5827 switch (notificationType) { 5828 case ConnectivityManager.CALLBACK_LOSING: 5829 a1 = 30 * 1000; // TODO - read this from NetworkMonitor 5830 // fall through 5831 case ConnectivityManager.CALLBACK_PRECHECK: 5832 case ConnectivityManager.CALLBACK_AVAILABLE: 5833 case ConnectivityManager.CALLBACK_LOST: 5834 case ConnectivityManager.CALLBACK_CAP_CHANGED: 5835 case ConnectivityManager.CALLBACK_IP_CHANGED: { 5836 o = new NetworkRequest(nri.request); 5837 a2 = networkAgent.network.netId; 5838 break; 5839 } 5840 case ConnectivityManager.CALLBACK_UNAVAIL: 5841 case ConnectivityManager.CALLBACK_RELEASED: { 5842 o = new NetworkRequest(nri.request); 5843 break; 5844 } 5845 default: { 5846 loge("Unknown notificationType " + notificationType); 5847 return; 5848 } 5849 } 5850 Message msg = Message.obtain(); 5851 msg.arg1 = a1; 5852 msg.arg2 = a2; 5853 msg.obj = o; 5854 msg.what = notificationType; 5855 try { 5856 if (VDBG) log("sending notification " + notificationType + " for " + nri.request); 5857 nri.messenger.send(msg); 5858 } catch (RemoteException e) { 5859 // may occur naturally in the race of binder death. 5860 loge("RemoteException caught trying to send a callback msg for " + nri.request); 5861 } 5862 } 5863 5864 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 5865 if (oldNetwork == null) { 5866 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 5867 return; 5868 } 5869 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 5870 if (DBG) { 5871 if (oldNetwork.networkRequests.size() != 0) { 5872 loge("Dead network still had " + oldNetwork.networkRequests.size() + " requests"); 5873 } 5874 } 5875 oldNetwork.asyncChannel.disconnect(); 5876 } 5877 5878 private void handleConnectionValidated(NetworkAgentInfo newNetwork) { 5879 if (newNetwork == null) { 5880 loge("Unknown NetworkAgentInfo in handleConnectionValidated"); 5881 return; 5882 } 5883 boolean keep = false; 5884 boolean isNewDefault = false; 5885 if (DBG) log("handleConnectionValidated for "+newNetwork.name()); 5886 // check if any NetworkRequest wants this NetworkAgent 5887 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 5888 if (VDBG) log(" new Network has: " + newNetwork.networkCapabilities); 5889 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 5890 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 5891 if (newNetwork == currentNetwork) { 5892 if (VDBG) log("Network " + newNetwork.name() + " was already satisfying" + 5893 " request " + nri.request.requestId + ". No change."); 5894 keep = true; 5895 continue; 5896 } 5897 5898 // check if it satisfies the NetworkCapabilities 5899 if (VDBG) log(" checking if request is satisfied: " + nri.request); 5900 if (nri.request.networkCapabilities.satisfiedByNetworkCapabilities( 5901 newNetwork.networkCapabilities)) { 5902 // next check if it's better than any current network we're using for 5903 // this request 5904 if (VDBG) { 5905 log("currentScore = " + 5906 (currentNetwork != null ? currentNetwork.currentScore : 0) + 5907 ", newScore = " + newNetwork.currentScore); 5908 } 5909 if (currentNetwork == null || 5910 currentNetwork.currentScore < newNetwork.currentScore) { 5911 if (currentNetwork != null) { 5912 if (VDBG) log(" accepting network in place of " + currentNetwork.name()); 5913 currentNetwork.networkRequests.remove(nri.request.requestId); 5914 currentNetwork.networkLingered.add(nri.request); 5915 affectedNetworks.add(currentNetwork); 5916 } else { 5917 if (VDBG) log(" accepting network in place of null"); 5918 } 5919 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 5920 newNetwork.addRequest(nri.request); 5921 int legacyType = nri.request.legacyType; 5922 if (legacyType != TYPE_NONE) { 5923 mLegacyTypeTracker.add(legacyType, newNetwork); 5924 } 5925 keep = true; 5926 // TODO - this could get expensive if we have alot of requests for this 5927 // network. Think about if there is a way to reduce this. Push 5928 // netid->request mapping to each factory? 5929 sendUpdatedScoreToFactories(nri.request, newNetwork.currentScore); 5930 if (mDefaultRequest.requestId == nri.request.requestId) { 5931 isNewDefault = true; 5932 updateActiveDefaultNetwork(newNetwork); 5933 if (newNetwork.linkProperties != null) { 5934 setDefaultDnsSystemProperties( 5935 newNetwork.linkProperties.getDnsServers()); 5936 } else { 5937 setDefaultDnsSystemProperties(new ArrayList<InetAddress>()); 5938 } 5939 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 5940 } 5941 } 5942 } 5943 } 5944 for (NetworkAgentInfo nai : affectedNetworks) { 5945 boolean teardown = true; 5946 for (int i = 0; i < nai.networkRequests.size(); i++) { 5947 NetworkRequest nr = nai.networkRequests.valueAt(i); 5948 try { 5949 if (mNetworkRequests.get(nr).isRequest) { 5950 teardown = false; 5951 } 5952 } catch (Exception e) { 5953 loge("Request " + nr + " not found in mNetworkRequests."); 5954 loge(" it came from request list of " + nai.name()); 5955 } 5956 } 5957 if (teardown) { 5958 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 5959 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 5960 } else { 5961 // not going to linger, so kill the list of linger networks.. only 5962 // notify them of linger if it happens as the result of gaining another, 5963 // but if they transition and old network stays up, don't tell them of linger 5964 // or very delayed loss 5965 nai.networkLingered.clear(); 5966 if (VDBG) log("Lingered for " + nai.name() + " cleared"); 5967 } 5968 } 5969 if (keep) { 5970 if (isNewDefault) { 5971 if (VDBG) log("Switching to new default network: " + newNetwork); 5972 setupDataActivityTracking(newNetwork); 5973 try { 5974 mNetd.setDefaultNetId(newNetwork.network.netId); 5975 } catch (Exception e) { 5976 loge("Exception setting default network :" + e); 5977 } 5978 if (newNetwork.equals(mNetworkForRequestId.get(mDefaultRequest.requestId))) { 5979 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 5980 } 5981 synchronized (ConnectivityService.this) { 5982 // have a new default network, release the transition wakelock in 5983 // a second if it's held. The second pause is to allow apps 5984 // to reconnect over the new network 5985 if (mNetTransitionWakeLock.isHeld()) { 5986 mHandler.sendMessageDelayed(mHandler.obtainMessage( 5987 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 5988 mNetTransitionWakeLockSerialNumber, 0), 5989 1000); 5990 } 5991 } 5992 5993 // this will cause us to come up initially as unconnected and switching 5994 // to connected after our normal pause unless somebody reports us as 5995 // really disconnected 5996 mDefaultInetConditionPublished = 0; 5997 mDefaultConnectionSequence++; 5998 mInetConditionChangeInFlight = false; 5999 // TODO - read the tcp buffer size config string from somewhere 6000 // updateNetworkSettings(); 6001 } 6002 // notify battery stats service about this network 6003 try { 6004 BatteryStatsService.getService().noteNetworkInterfaceType( 6005 newNetwork.linkProperties.getInterfaceName(), 6006 newNetwork.networkInfo.getType()); 6007 } catch (RemoteException e) { } 6008 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 6009 } else { 6010 if (DBG && newNetwork.networkRequests.size() != 0) { 6011 loge("tearing down network with live requests:"); 6012 for (int i=0; i < newNetwork.networkRequests.size(); i++) { 6013 loge(" " + newNetwork.networkRequests.valueAt(i)); 6014 } 6015 } 6016 if (VDBG) log("Validated network turns out to be unwanted. Tear it down."); 6017 newNetwork.asyncChannel.disconnect(); 6018 } 6019 } 6020 6021 6022 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 6023 NetworkInfo.State state = newInfo.getState(); 6024 NetworkInfo oldInfo = null; 6025 synchronized (networkAgent) { 6026 oldInfo = networkAgent.networkInfo; 6027 networkAgent.networkInfo = newInfo; 6028 } 6029 6030 if (oldInfo != null && oldInfo.getState() == state) { 6031 if (VDBG) log("ignoring duplicate network state non-change"); 6032 return; 6033 } 6034 if (DBG) { 6035 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 6036 (oldInfo == null ? "null" : oldInfo.getState()) + 6037 " to " + state); 6038 } 6039 6040 if (state == NetworkInfo.State.CONNECTED) { 6041 try { 6042 // This is likely caused by the fact that this network already 6043 // exists. An example is when a network goes from CONNECTED to 6044 // CONNECTING and back (like wifi on DHCP renew). 6045 // TODO: keep track of which networks we've created, or ask netd 6046 // to tell us whether we've already created this network or not. 6047 mNetd.createNetwork(networkAgent.network.netId); 6048 } catch (Exception e) { 6049 loge("Error creating network " + networkAgent.network.netId + ": " 6050 + e.getMessage()); 6051 return; 6052 } 6053 6054 updateLinkProperties(networkAgent, null); 6055 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 6056 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 6057 } else if (state == NetworkInfo.State.DISCONNECTED || 6058 state == NetworkInfo.State.SUSPENDED) { 6059 networkAgent.asyncChannel.disconnect(); 6060 } 6061 } 6062 6063 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 6064 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 6065 6066 nai.currentScore = score; 6067 6068 // TODO - This will not do the right thing if this network is lowering 6069 // its score and has requests that can be served by other 6070 // currently-active networks, or if the network is increasing its 6071 // score and other networks have requests that can be better served 6072 // by this network. 6073 // 6074 // Really we want to see if any of our requests migrate to other 6075 // active/lingered networks and if any other requests migrate to us (depending 6076 // on increasing/decreasing currentScore. That's a bit of work and probably our 6077 // score checking/network allocation code needs to be modularized so we can understand 6078 // (see handleConnectionValided for an example). 6079 // 6080 // As a first order approx, lets just advertise the new score to factories. If 6081 // somebody can beat it they will nominate a network and our normal net replacement 6082 // code will fire. 6083 for (int i = 0; i < nai.networkRequests.size(); i++) { 6084 NetworkRequest nr = nai.networkRequests.valueAt(i); 6085 sendUpdatedScoreToFactories(nr, score); 6086 } 6087 } 6088 6089 // notify only this one new request of the current state 6090 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 6091 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 6092 // TODO - read state from monitor to decide what to send. 6093// if (nai.networkMonitor.isLingering()) { 6094// notifyType = NetworkCallbacks.LOSING; 6095// } else if (nai.networkMonitor.isEvaluating()) { 6096// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 6097// } 6098 callCallbackForRequest(nri, nai, notifyType); 6099 } 6100 6101 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 6102 if (connected) { 6103 NetworkInfo info = new NetworkInfo(nai.networkInfo); 6104 info.setType(type); 6105 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 6106 } else { 6107 NetworkInfo info = new NetworkInfo(nai.networkInfo); 6108 info.setType(type); 6109 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 6110 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 6111 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 6112 if (info.isFailover()) { 6113 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 6114 nai.networkInfo.setFailover(false); 6115 } 6116 if (info.getReason() != null) { 6117 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 6118 } 6119 if (info.getExtraInfo() != null) { 6120 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 6121 } 6122 NetworkAgentInfo newDefaultAgent = null; 6123 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 6124 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 6125 if (newDefaultAgent != null) { 6126 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 6127 newDefaultAgent.networkInfo); 6128 } else { 6129 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 6130 } 6131 } 6132 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 6133 mDefaultInetConditionPublished); 6134 final Intent immediateIntent = new Intent(intent); 6135 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 6136 sendStickyBroadcast(immediateIntent); 6137 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 6138 if (newDefaultAgent != null) { 6139 sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo, 6140 getConnectivityChangeDelay()); 6141 } 6142 } 6143 } 6144 6145 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 6146 if (VDBG) log("notifyType " + notifyType + " for " + networkAgent.name()); 6147 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 6148 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 6149 NetworkRequestInfo nri = mNetworkRequests.get(nr); 6150 if (VDBG) log(" sending notification for " + nr); 6151 callCallbackForRequest(nri, networkAgent, notifyType); 6152 } 6153 } 6154 6155 private LinkProperties getLinkPropertiesForTypeInternal(int networkType) { 6156 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 6157 if (nai != null) { 6158 synchronized (nai) { 6159 return new LinkProperties(nai.linkProperties); 6160 } 6161 } 6162 return new LinkProperties(); 6163 } 6164 6165 private NetworkInfo getNetworkInfoForType(int networkType) { 6166 if (!mLegacyTypeTracker.isTypeSupported(networkType)) 6167 return null; 6168 6169 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 6170 if (nai != null) { 6171 NetworkInfo result = new NetworkInfo(nai.networkInfo); 6172 result.setType(networkType); 6173 return result; 6174 } else { 6175 return new NetworkInfo(networkType, 0, "Unknown", ""); 6176 } 6177 } 6178 6179 private NetworkCapabilities getNetworkCapabilitiesForType(int networkType) { 6180 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 6181 if (nai != null) { 6182 synchronized (nai) { 6183 return new NetworkCapabilities(nai.networkCapabilities); 6184 } 6185 } 6186 return new NetworkCapabilities(); 6187 } 6188} 6189