ConnectivityService.java revision 4bb015d90ae2aa3ce30778f3f584e0b7124f7505
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 if (isNetworkBlocked(networkType, uid)) { 1075 // network is blocked; clone and override state 1076 info = new NetworkInfo(info); 1077 info.setDetailedState(DetailedState.BLOCKED, null, null); 1078 } 1079 if (mLockdownTracker != null) { 1080 info = mLockdownTracker.augmentNetworkInfo(info); 1081 } 1082 return info; 1083 } 1084 1085 /** 1086 * Return NetworkInfo for the active (i.e., connected) network interface. 1087 * It is assumed that at most one network is active at a time. If more 1088 * than one is active, it is indeterminate which will be returned. 1089 * @return the info for the active network, or {@code null} if none is 1090 * active 1091 */ 1092 @Override 1093 public NetworkInfo getActiveNetworkInfo() { 1094 enforceAccessPermission(); 1095 final int uid = Binder.getCallingUid(); 1096 return getNetworkInfo(mActiveDefaultNetwork, uid); 1097 } 1098 1099 // only called when the default request is satisfied 1100 private void updateActiveDefaultNetwork(NetworkAgentInfo nai) { 1101 if (nai != null) { 1102 mActiveDefaultNetwork = nai.networkInfo.getType(); 1103 } else { 1104 mActiveDefaultNetwork = TYPE_NONE; 1105 } 1106 } 1107 1108 /** 1109 * Find the first Provisioning network. 1110 * 1111 * @return NetworkInfo or null if none. 1112 */ 1113 private NetworkInfo getProvisioningNetworkInfo() { 1114 enforceAccessPermission(); 1115 1116 // Find the first Provisioning Network 1117 NetworkInfo provNi = null; 1118 for (NetworkInfo ni : getAllNetworkInfo()) { 1119 if (ni.isConnectedToProvisioningNetwork()) { 1120 provNi = ni; 1121 break; 1122 } 1123 } 1124 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 1125 return provNi; 1126 } 1127 1128 /** 1129 * Find the first Provisioning network or the ActiveDefaultNetwork 1130 * if there is no Provisioning network 1131 * 1132 * @return NetworkInfo or null if none. 1133 */ 1134 @Override 1135 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 1136 enforceAccessPermission(); 1137 1138 NetworkInfo provNi = getProvisioningNetworkInfo(); 1139 if (provNi == null) { 1140 final int uid = Binder.getCallingUid(); 1141 provNi = getNetworkInfo(mActiveDefaultNetwork, uid); 1142 } 1143 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 1144 return provNi; 1145 } 1146 1147 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1148 enforceAccessPermission(); 1149 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 1150 return getNetworkInfoForType(mActiveDefaultNetwork); 1151 } 1152 return null; 1153 } 1154 1155 @Override 1156 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1157 enforceConnectivityInternalPermission(); 1158 return getNetworkInfo(mActiveDefaultNetwork, uid); 1159 } 1160 1161 @Override 1162 public NetworkInfo getNetworkInfo(int networkType) { 1163 enforceAccessPermission(); 1164 final int uid = Binder.getCallingUid(); 1165 return getNetworkInfo(networkType, uid); 1166 } 1167 1168 private NetworkInfo getNetworkInfo(int networkType, int uid) { 1169 NetworkInfo info = null; 1170 if (isNetworkTypeValid(networkType)) { 1171 if (getNetworkInfoForType(networkType) != null) { 1172 info = getFilteredNetworkInfo(networkType, uid); 1173 } 1174 } 1175 return info; 1176 } 1177 1178 @Override 1179 public NetworkInfo[] getAllNetworkInfo() { 1180 enforceAccessPermission(); 1181 final int uid = Binder.getCallingUid(); 1182 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1183 synchronized (mRulesLock) { 1184 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1185 networkType++) { 1186 if (getNetworkInfoForType(networkType) != null) { 1187 result.add(getFilteredNetworkInfo(networkType, uid)); 1188 } 1189 } 1190 } 1191 return result.toArray(new NetworkInfo[result.size()]); 1192 } 1193 1194 @Override 1195 public boolean isNetworkSupported(int networkType) { 1196 enforceAccessPermission(); 1197 return (isNetworkTypeValid(networkType) && (getNetworkInfoForType(networkType) != null)); 1198 } 1199 1200 /** 1201 * Return LinkProperties for the active (i.e., connected) default 1202 * network interface. It is assumed that at most one default network 1203 * is active at a time. If more than one is active, it is indeterminate 1204 * which will be returned. 1205 * @return the ip properties for the active network, or {@code null} if 1206 * none is active 1207 */ 1208 @Override 1209 public LinkProperties getActiveLinkProperties() { 1210 return getLinkPropertiesForType(mActiveDefaultNetwork); 1211 } 1212 1213 @Override 1214 public LinkProperties getLinkPropertiesForType(int networkType) { 1215 enforceAccessPermission(); 1216 if (isNetworkTypeValid(networkType)) { 1217 return getLinkPropertiesForTypeInternal(networkType); 1218 } 1219 return null; 1220 } 1221 1222 // TODO - this should be ALL networks 1223 @Override 1224 public LinkProperties getLinkProperties(Network network) { 1225 enforceAccessPermission(); 1226 NetworkAgentInfo nai = mNetworkForNetId.get(network.netId); 1227 if (nai != null) return new LinkProperties(nai.linkProperties); 1228 return null; 1229 } 1230 1231 @Override 1232 public NetworkCapabilities getNetworkCapabilities(Network network) { 1233 enforceAccessPermission(); 1234 NetworkAgentInfo nai = mNetworkForNetId.get(network.netId); 1235 if (nai != null) return new NetworkCapabilities(nai.networkCapabilities); 1236 return null; 1237 } 1238 1239 @Override 1240 public NetworkState[] getAllNetworkState() { 1241 enforceAccessPermission(); 1242 final int uid = Binder.getCallingUid(); 1243 final ArrayList<NetworkState> result = Lists.newArrayList(); 1244 synchronized (mRulesLock) { 1245 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1246 networkType++) { 1247 if (getNetworkInfoForType(networkType) != null) { 1248 final NetworkInfo info = getFilteredNetworkInfo(networkType, uid); 1249 final LinkProperties lp = getLinkPropertiesForTypeInternal(networkType); 1250 final NetworkCapabilities netcap = getNetworkCapabilitiesForType(networkType); 1251 result.add(new NetworkState(info, lp, netcap)); 1252 } 1253 } 1254 } 1255 return result.toArray(new NetworkState[result.size()]); 1256 } 1257 1258 private NetworkState getNetworkStateUnchecked(int networkType) { 1259 if (isNetworkTypeValid(networkType)) { 1260 NetworkInfo info = getNetworkInfoForType(networkType); 1261 if (info != null) { 1262 return new NetworkState(info, 1263 getLinkPropertiesForTypeInternal(networkType), 1264 getNetworkCapabilitiesForType(networkType)); 1265 } 1266 } 1267 return null; 1268 } 1269 1270 @Override 1271 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1272 enforceAccessPermission(); 1273 1274 final long token = Binder.clearCallingIdentity(); 1275 try { 1276 final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork); 1277 if (state != null) { 1278 try { 1279 return mPolicyManager.getNetworkQuotaInfo(state); 1280 } catch (RemoteException e) { 1281 } 1282 } 1283 return null; 1284 } finally { 1285 Binder.restoreCallingIdentity(token); 1286 } 1287 } 1288 1289 @Override 1290 public boolean isActiveNetworkMetered() { 1291 enforceAccessPermission(); 1292 final long token = Binder.clearCallingIdentity(); 1293 try { 1294 return isNetworkMeteredUnchecked(mActiveDefaultNetwork); 1295 } finally { 1296 Binder.restoreCallingIdentity(token); 1297 } 1298 } 1299 1300 private boolean isNetworkMeteredUnchecked(int networkType) { 1301 final NetworkState state = getNetworkStateUnchecked(networkType); 1302 if (state != null) { 1303 try { 1304 return mPolicyManager.isNetworkMetered(state); 1305 } catch (RemoteException e) { 1306 } 1307 } 1308 return false; 1309 } 1310 1311 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1312 @Override 1313 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1314 int deviceType = Integer.parseInt(label); 1315 sendDataActivityBroadcast(deviceType, active, tsNanos); 1316 } 1317 }; 1318 1319 /** 1320 * Used to notice when the calling process dies so we can self-expire 1321 * 1322 * Also used to know if the process has cleaned up after itself when 1323 * our auto-expire timer goes off. The timer has a link to an object. 1324 * 1325 */ 1326 private class FeatureUser implements IBinder.DeathRecipient { 1327 int mNetworkType; 1328 String mFeature; 1329 IBinder mBinder; 1330 int mPid; 1331 int mUid; 1332 long mCreateTime; 1333 1334 FeatureUser(int type, String feature, IBinder binder) { 1335 super(); 1336 mNetworkType = type; 1337 mFeature = feature; 1338 mBinder = binder; 1339 mPid = getCallingPid(); 1340 mUid = getCallingUid(); 1341 mCreateTime = System.currentTimeMillis(); 1342 1343 try { 1344 mBinder.linkToDeath(this, 0); 1345 } catch (RemoteException e) { 1346 binderDied(); 1347 } 1348 } 1349 1350 void unlinkDeathRecipient() { 1351 mBinder.unlinkToDeath(this, 0); 1352 } 1353 1354 public void binderDied() { 1355 log("ConnectivityService FeatureUser binderDied(" + 1356 mNetworkType + ", " + mFeature + ", " + mBinder + "), created " + 1357 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1358 stopUsingNetworkFeature(this, false); 1359 } 1360 1361 public void expire() { 1362 if (VDBG) { 1363 log("ConnectivityService FeatureUser expire(" + 1364 mNetworkType + ", " + mFeature + ", " + mBinder +"), created " + 1365 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1366 } 1367 stopUsingNetworkFeature(this, false); 1368 } 1369 1370 public boolean isSameUser(FeatureUser u) { 1371 if (u == null) return false; 1372 1373 return isSameUser(u.mPid, u.mUid, u.mNetworkType, u.mFeature); 1374 } 1375 1376 public boolean isSameUser(int pid, int uid, int networkType, String feature) { 1377 if ((mPid == pid) && (mUid == uid) && (mNetworkType == networkType) && 1378 TextUtils.equals(mFeature, feature)) { 1379 return true; 1380 } 1381 return false; 1382 } 1383 1384 public String toString() { 1385 return "FeatureUser("+mNetworkType+","+mFeature+","+mPid+","+mUid+"), created " + 1386 (System.currentTimeMillis() - mCreateTime) + " mSec ago"; 1387 } 1388 } 1389 1390 // javadoc from interface 1391 public int startUsingNetworkFeature(int networkType, String feature, 1392 IBinder binder) { 1393 long startTime = 0; 1394 if (DBG) { 1395 startTime = SystemClock.elapsedRealtime(); 1396 } 1397 if (VDBG) { 1398 log("startUsingNetworkFeature for net " + networkType + ": " + feature + ", uid=" 1399 + Binder.getCallingUid()); 1400 } 1401 enforceChangePermission(); 1402 try { 1403 if (!ConnectivityManager.isNetworkTypeValid(networkType) || 1404 mNetConfigs[networkType] == null) { 1405 return PhoneConstants.APN_REQUEST_FAILED; 1406 } 1407 1408 FeatureUser f = new FeatureUser(networkType, feature, binder); 1409 1410 // TODO - move this into individual networktrackers 1411 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1412 1413 if (mLockdownEnabled) { 1414 // Since carrier APNs usually aren't available from VPN 1415 // endpoint, mark them as unavailable. 1416 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1417 } 1418 1419 if (mProtectedNetworks.contains(usedNetworkType)) { 1420 enforceConnectivityInternalPermission(); 1421 } 1422 1423 // if UID is restricted, don't allow them to bring up metered APNs 1424 final boolean networkMetered = isNetworkMeteredUnchecked(usedNetworkType); 1425 final int uidRules; 1426 synchronized (mRulesLock) { 1427 uidRules = mUidRules.get(Binder.getCallingUid(), RULE_ALLOW_ALL); 1428 } 1429 if (networkMetered && (uidRules & RULE_REJECT_METERED) != 0) { 1430 return PhoneConstants.APN_REQUEST_FAILED; 1431 } 1432 1433 NetworkStateTracker network = mNetTrackers[usedNetworkType]; 1434 if (network != null) { 1435 Integer currentPid = new Integer(getCallingPid()); 1436 if (usedNetworkType != networkType) { 1437 NetworkInfo ni = network.getNetworkInfo(); 1438 1439 if (ni.isAvailable() == false) { 1440 if (!TextUtils.equals(feature,Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 1441 if (DBG) log("special network not available ni=" + ni.getTypeName()); 1442 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1443 } else { 1444 // else make the attempt anyway - probably giving REQUEST_STARTED below 1445 if (DBG) { 1446 log("special network not available, but try anyway ni=" + 1447 ni.getTypeName()); 1448 } 1449 } 1450 } 1451 1452 int restoreTimer = getRestoreDefaultNetworkDelay(usedNetworkType); 1453 1454 synchronized(this) { 1455 boolean addToList = true; 1456 if (restoreTimer < 0) { 1457 // In case there is no timer is specified for the feature, 1458 // make sure we don't add duplicate entry with the same request. 1459 for (FeatureUser u : mFeatureUsers) { 1460 if (u.isSameUser(f)) { 1461 // Duplicate user is found. Do not add. 1462 addToList = false; 1463 break; 1464 } 1465 } 1466 } 1467 1468 if (addToList) mFeatureUsers.add(f); 1469 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1470 // this gets used for per-pid dns when connected 1471 mNetRequestersPids[usedNetworkType].add(currentPid); 1472 } 1473 } 1474 1475 if (restoreTimer >= 0) { 1476 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1477 EVENT_RESTORE_DEFAULT_NETWORK, f), restoreTimer); 1478 } 1479 1480 if ((ni.isConnectedOrConnecting() == true) && 1481 !network.isTeardownRequested()) { 1482 if (ni.isConnected() == true) { 1483 final long token = Binder.clearCallingIdentity(); 1484 try { 1485 // add the pid-specific dns 1486 handleDnsConfigurationChange(usedNetworkType); 1487 if (VDBG) log("special network already active"); 1488 } finally { 1489 Binder.restoreCallingIdentity(token); 1490 } 1491 return PhoneConstants.APN_ALREADY_ACTIVE; 1492 } 1493 if (VDBG) log("special network already connecting"); 1494 return PhoneConstants.APN_REQUEST_STARTED; 1495 } 1496 1497 // check if the radio in play can make another contact 1498 // assume if cannot for now 1499 1500 if (DBG) { 1501 log("startUsingNetworkFeature reconnecting to " + networkType + ": " + 1502 feature); 1503 } 1504 if (network.reconnect()) { 1505 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_STARTED"); 1506 return PhoneConstants.APN_REQUEST_STARTED; 1507 } else { 1508 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_FAILED"); 1509 return PhoneConstants.APN_REQUEST_FAILED; 1510 } 1511 } else { 1512 // need to remember this unsupported request so we respond appropriately on stop 1513 synchronized(this) { 1514 mFeatureUsers.add(f); 1515 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1516 // this gets used for per-pid dns when connected 1517 mNetRequestersPids[usedNetworkType].add(currentPid); 1518 } 1519 } 1520 if (DBG) log("startUsingNetworkFeature X: return -1 unsupported feature."); 1521 return -1; 1522 } 1523 } 1524 if (DBG) log("startUsingNetworkFeature X: return APN_TYPE_NOT_AVAILABLE"); 1525 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1526 } finally { 1527 if (DBG) { 1528 final long execTime = SystemClock.elapsedRealtime() - startTime; 1529 if (execTime > 250) { 1530 loge("startUsingNetworkFeature took too long: " + execTime + "ms"); 1531 } else { 1532 if (VDBG) log("startUsingNetworkFeature took " + execTime + "ms"); 1533 } 1534 } 1535 } 1536 } 1537 1538 // javadoc from interface 1539 public int stopUsingNetworkFeature(int networkType, String feature) { 1540 enforceChangePermission(); 1541 1542 int pid = getCallingPid(); 1543 int uid = getCallingUid(); 1544 1545 FeatureUser u = null; 1546 boolean found = false; 1547 1548 synchronized(this) { 1549 for (FeatureUser x : mFeatureUsers) { 1550 if (x.isSameUser(pid, uid, networkType, feature)) { 1551 u = x; 1552 found = true; 1553 break; 1554 } 1555 } 1556 } 1557 if (found && u != null) { 1558 if (VDBG) log("stopUsingNetworkFeature: X"); 1559 // stop regardless of how many other time this proc had called start 1560 return stopUsingNetworkFeature(u, true); 1561 } else { 1562 // none found! 1563 if (VDBG) log("stopUsingNetworkFeature: X not a live request, ignoring"); 1564 return 1; 1565 } 1566 } 1567 1568 private int stopUsingNetworkFeature(FeatureUser u, boolean ignoreDups) { 1569 int networkType = u.mNetworkType; 1570 String feature = u.mFeature; 1571 int pid = u.mPid; 1572 int uid = u.mUid; 1573 1574 NetworkStateTracker tracker = null; 1575 boolean callTeardown = false; // used to carry our decision outside of sync block 1576 1577 if (VDBG) { 1578 log("stopUsingNetworkFeature: net " + networkType + ": " + feature); 1579 } 1580 1581 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1582 if (DBG) { 1583 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1584 ", net is invalid"); 1585 } 1586 return -1; 1587 } 1588 1589 // need to link the mFeatureUsers list with the mNetRequestersPids state in this 1590 // sync block 1591 synchronized(this) { 1592 // check if this process still has an outstanding start request 1593 if (!mFeatureUsers.contains(u)) { 1594 if (VDBG) { 1595 log("stopUsingNetworkFeature: this process has no outstanding requests" + 1596 ", ignoring"); 1597 } 1598 return 1; 1599 } 1600 u.unlinkDeathRecipient(); 1601 mFeatureUsers.remove(mFeatureUsers.indexOf(u)); 1602 // If we care about duplicate requests, check for that here. 1603 // 1604 // This is done to support the extension of a request - the app 1605 // can request we start the network feature again and renew the 1606 // auto-shutoff delay. Normal "stop" calls from the app though 1607 // do not pay attention to duplicate requests - in effect the 1608 // API does not refcount and a single stop will counter multiple starts. 1609 if (ignoreDups == false) { 1610 for (FeatureUser x : mFeatureUsers) { 1611 if (x.isSameUser(u)) { 1612 if (VDBG) log("stopUsingNetworkFeature: dup is found, ignoring"); 1613 return 1; 1614 } 1615 } 1616 } 1617 1618 // TODO - move to individual network trackers 1619 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1620 1621 tracker = mNetTrackers[usedNetworkType]; 1622 if (tracker == null) { 1623 if (DBG) { 1624 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1625 " no known tracker for used net type " + usedNetworkType); 1626 } 1627 return -1; 1628 } 1629 if (usedNetworkType != networkType) { 1630 Integer currentPid = new Integer(pid); 1631 mNetRequestersPids[usedNetworkType].remove(currentPid); 1632 1633 final long token = Binder.clearCallingIdentity(); 1634 try { 1635 reassessPidDns(pid, true); 1636 } finally { 1637 Binder.restoreCallingIdentity(token); 1638 } 1639 flushVmDnsCache(); 1640 if (mNetRequestersPids[usedNetworkType].size() != 0) { 1641 if (VDBG) { 1642 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1643 " others still using it"); 1644 } 1645 return 1; 1646 } 1647 callTeardown = true; 1648 } else { 1649 if (DBG) { 1650 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1651 " not a known feature - dropping"); 1652 } 1653 } 1654 } 1655 1656 if (callTeardown) { 1657 if (DBG) { 1658 log("stopUsingNetworkFeature: teardown net " + networkType + ": " + feature); 1659 } 1660 tracker.teardown(); 1661 return 1; 1662 } else { 1663 return -1; 1664 } 1665 } 1666 1667 /** 1668 * Check if the address falls into any of currently running VPN's route's. 1669 */ 1670 private boolean isAddressUnderVpn(InetAddress address) { 1671 synchronized (mVpns) { 1672 synchronized (mRoutesLock) { 1673 int uid = UserHandle.getCallingUserId(); 1674 Vpn vpn = mVpns.get(uid); 1675 if (vpn == null) { 1676 return false; 1677 } 1678 1679 // Check if an exemption exists for this address. 1680 for (LinkAddress destination : mExemptAddresses) { 1681 if (!NetworkUtils.addressTypeMatches(address, destination.getAddress())) { 1682 continue; 1683 } 1684 1685 int prefix = destination.getPrefixLength(); 1686 InetAddress addrMasked = NetworkUtils.getNetworkPart(address, prefix); 1687 InetAddress destMasked = NetworkUtils.getNetworkPart(destination.getAddress(), 1688 prefix); 1689 1690 if (addrMasked.equals(destMasked)) { 1691 return false; 1692 } 1693 } 1694 1695 // Finally check if the address is covered by the VPN. 1696 return vpn.isAddressCovered(address); 1697 } 1698 } 1699 } 1700 1701 /** 1702 * @deprecated use requestRouteToHostAddress instead 1703 * 1704 * Ensure that a network route exists to deliver traffic to the specified 1705 * host via the specified network interface. 1706 * @param networkType the type of the network over which traffic to the 1707 * specified host is to be routed 1708 * @param hostAddress the IP address of the host to which the route is 1709 * desired 1710 * @return {@code true} on success, {@code false} on failure 1711 */ 1712 public boolean requestRouteToHost(int networkType, int hostAddress, String packageName) { 1713 InetAddress inetAddress = NetworkUtils.intToInetAddress(hostAddress); 1714 1715 if (inetAddress == null) { 1716 return false; 1717 } 1718 1719 return requestRouteToHostAddress(networkType, inetAddress.getAddress(), packageName); 1720 } 1721 1722 /** 1723 * Ensure that a network route exists to deliver traffic to the specified 1724 * host via the specified network interface. 1725 * @param networkType the type of the network over which traffic to the 1726 * specified host is to be routed 1727 * @param hostAddress the IP address of the host to which the route is 1728 * desired 1729 * @return {@code true} on success, {@code false} on failure 1730 */ 1731 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress, 1732 String packageName) { 1733 enforceChangePermission(); 1734 if (mProtectedNetworks.contains(networkType)) { 1735 enforceConnectivityInternalPermission(); 1736 } 1737 boolean exempt; 1738 InetAddress addr; 1739 try { 1740 addr = InetAddress.getByAddress(hostAddress); 1741 } catch (UnknownHostException e) { 1742 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1743 return false; 1744 } 1745 // System apps may request routes bypassing the VPN to keep other networks working. 1746 if (Binder.getCallingUid() == Process.SYSTEM_UID) { 1747 exempt = true; 1748 } else { 1749 mAppOpsManager.checkPackage(Binder.getCallingUid(), packageName); 1750 try { 1751 ApplicationInfo info = mContext.getPackageManager().getApplicationInfo(packageName, 1752 0); 1753 exempt = (info.flags & ApplicationInfo.FLAG_SYSTEM) != 0; 1754 } catch (NameNotFoundException e) { 1755 throw new IllegalArgumentException("Failed to find calling package details", e); 1756 } 1757 } 1758 1759 // Non-exempt routeToHost's can only be added if the host is not covered by the VPN. 1760 // This can be either because the VPN's routes do not cover the destination or a 1761 // system application added an exemption that covers this destination. 1762 if (!exempt && isAddressUnderVpn(addr)) { 1763 return false; 1764 } 1765 1766 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1767 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1768 return false; 1769 } 1770 1771 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1772 if (nai == null) { 1773 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1774 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1775 } else { 1776 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1777 } 1778 return false; 1779 } 1780 1781 DetailedState netState = nai.networkInfo.getDetailedState(); 1782 1783 if ((netState != DetailedState.CONNECTED && 1784 netState != DetailedState.CAPTIVE_PORTAL_CHECK)) { 1785 if (VDBG) { 1786 log("requestRouteToHostAddress on down network " 1787 + "(" + networkType + ") - dropped" 1788 + " netState=" + netState); 1789 } 1790 return false; 1791 } 1792 final int uid = Binder.getCallingUid(); 1793 final long token = Binder.clearCallingIdentity(); 1794 try { 1795 LinkProperties lp = nai.linkProperties; 1796 boolean ok = modifyRouteToAddress(lp, addr, ADD, TO_DEFAULT_TABLE, exempt, 1797 nai.network.netId, uid); 1798 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1799 return ok; 1800 } finally { 1801 Binder.restoreCallingIdentity(token); 1802 } 1803 } 1804 1805 private boolean addRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, 1806 boolean exempt, int netId) { 1807 return modifyRoute(p, r, 0, ADD, toDefaultTable, exempt, netId, false, UID_UNUSED); 1808 } 1809 1810 private boolean removeRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, int netId) { 1811 return modifyRoute(p, r, 0, REMOVE, toDefaultTable, UNEXEMPT, netId, false, UID_UNUSED); 1812 } 1813 1814 private boolean modifyRouteToAddress(LinkProperties lp, InetAddress addr, boolean doAdd, 1815 boolean toDefaultTable, boolean exempt, int netId, int uid) { 1816 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1817 if (bestRoute == null) { 1818 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1819 } else { 1820 String iface = bestRoute.getInterface(); 1821 if (bestRoute.getGateway().equals(addr)) { 1822 // if there is no better route, add the implied hostroute for our gateway 1823 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1824 } else { 1825 // if we will connect to this through another route, add a direct route 1826 // to it's gateway 1827 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1828 } 1829 } 1830 return modifyRoute(lp, bestRoute, 0, doAdd, toDefaultTable, exempt, netId, true, uid); 1831 } 1832 1833 /* 1834 * TODO: Clean all this stuff up. Once we have UID-based routing, stuff will break due to 1835 * incorrect tracking of mAddedRoutes, so a cleanup becomes necessary and urgent. But at 1836 * the same time, there'll be no more need to track mAddedRoutes or mExemptAddresses, 1837 * or even have the concept of an exempt address, or do things like "selectBestRoute", or 1838 * determine "default" vs "secondary" table, etc., so the cleanup becomes possible. 1839 */ 1840 private boolean modifyRoute(LinkProperties lp, RouteInfo r, int cycleCount, boolean doAdd, 1841 boolean toDefaultTable, boolean exempt, int netId, boolean legacy, int uid) { 1842 if ((lp == null) || (r == null)) { 1843 if (DBG) log("modifyRoute got unexpected null: " + lp + ", " + r); 1844 return false; 1845 } 1846 1847 if (cycleCount > MAX_HOSTROUTE_CYCLE_COUNT) { 1848 loge("Error modifying route - too much recursion"); 1849 return false; 1850 } 1851 1852 String ifaceName = r.getInterface(); 1853 if(ifaceName == null) { 1854 loge("Error modifying route - no interface name"); 1855 return false; 1856 } 1857 if (r.hasGateway()) { 1858 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), r.getGateway()); 1859 if (bestRoute != null) { 1860 if (bestRoute.getGateway().equals(r.getGateway())) { 1861 // if there is no better route, add the implied hostroute for our gateway 1862 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), ifaceName); 1863 } else { 1864 // if we will connect to our gateway through another route, add a direct 1865 // route to it's gateway 1866 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), 1867 bestRoute.getGateway(), 1868 ifaceName); 1869 } 1870 modifyRoute(lp, bestRoute, cycleCount+1, doAdd, toDefaultTable, exempt, netId, 1871 legacy, uid); 1872 } 1873 } 1874 if (doAdd) { 1875 if (VDBG) log("Adding " + r + " for interface " + ifaceName); 1876 try { 1877 if (toDefaultTable) { 1878 synchronized (mRoutesLock) { 1879 // only track default table - only one apps can effect 1880 mAddedRoutes.add(r); 1881 if (legacy) { 1882 mNetd.addLegacyRouteForNetId(netId, r, uid); 1883 } else { 1884 mNetd.addRoute(netId, r); 1885 } 1886 if (exempt) { 1887 LinkAddress dest = r.getDestinationLinkAddress(); 1888 if (!mExemptAddresses.contains(dest)) { 1889 mNetd.setHostExemption(dest); 1890 mExemptAddresses.add(dest); 1891 } 1892 } 1893 } 1894 } else { 1895 if (legacy) { 1896 mNetd.addLegacyRouteForNetId(netId, r, uid); 1897 } else { 1898 mNetd.addRoute(netId, r); 1899 } 1900 } 1901 } catch (Exception e) { 1902 // never crash - catch them all 1903 if (DBG) loge("Exception trying to add a route: " + e); 1904 return false; 1905 } 1906 } else { 1907 // if we remove this one and there are no more like it, then refcount==0 and 1908 // we can remove it from the table 1909 if (toDefaultTable) { 1910 synchronized (mRoutesLock) { 1911 mAddedRoutes.remove(r); 1912 if (mAddedRoutes.contains(r) == false) { 1913 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1914 try { 1915 if (legacy) { 1916 mNetd.removeLegacyRouteForNetId(netId, r, uid); 1917 } else { 1918 mNetd.removeRoute(netId, r); 1919 } 1920 LinkAddress dest = r.getDestinationLinkAddress(); 1921 if (mExemptAddresses.contains(dest)) { 1922 mNetd.clearHostExemption(dest); 1923 mExemptAddresses.remove(dest); 1924 } 1925 } catch (Exception e) { 1926 // never crash - catch them all 1927 if (VDBG) loge("Exception trying to remove a route: " + e); 1928 return false; 1929 } 1930 } else { 1931 if (VDBG) log("not removing " + r + " as it's still in use"); 1932 } 1933 } 1934 } else { 1935 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1936 try { 1937 if (legacy) { 1938 mNetd.removeLegacyRouteForNetId(netId, r, uid); 1939 } else { 1940 mNetd.removeRoute(netId, r); 1941 } 1942 } catch (Exception e) { 1943 // never crash - catch them all 1944 if (VDBG) loge("Exception trying to remove a route: " + e); 1945 return false; 1946 } 1947 } 1948 } 1949 return true; 1950 } 1951 1952 public void setDataDependency(int networkType, boolean met) { 1953 enforceConnectivityInternalPermission(); 1954 1955 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1956 (met ? ENABLED : DISABLED), networkType)); 1957 } 1958 1959 private void handleSetDependencyMet(int networkType, boolean met) { 1960 if (mNetTrackers[networkType] != null) { 1961 if (DBG) { 1962 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1963 } 1964 mNetTrackers[networkType].setDependencyMet(met); 1965 } 1966 } 1967 1968 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1969 @Override 1970 public void onUidRulesChanged(int uid, int uidRules) { 1971 // caller is NPMS, since we only register with them 1972 if (LOGD_RULES) { 1973 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1974 } 1975 1976 synchronized (mRulesLock) { 1977 // skip update when we've already applied rules 1978 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1979 if (oldRules == uidRules) return; 1980 1981 mUidRules.put(uid, uidRules); 1982 } 1983 1984 // TODO: notify UID when it has requested targeted updates 1985 } 1986 1987 @Override 1988 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1989 // caller is NPMS, since we only register with them 1990 if (LOGD_RULES) { 1991 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1992 } 1993 1994 synchronized (mRulesLock) { 1995 mMeteredIfaces.clear(); 1996 for (String iface : meteredIfaces) { 1997 mMeteredIfaces.add(iface); 1998 } 1999 } 2000 } 2001 2002 @Override 2003 public void onRestrictBackgroundChanged(boolean restrictBackground) { 2004 // caller is NPMS, since we only register with them 2005 if (LOGD_RULES) { 2006 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 2007 } 2008 2009 // kick off connectivity change broadcast for active network, since 2010 // global background policy change is radical. 2011 final int networkType = mActiveDefaultNetwork; 2012 if (isNetworkTypeValid(networkType)) { 2013 final NetworkStateTracker tracker = mNetTrackers[networkType]; 2014 if (tracker != null) { 2015 final NetworkInfo info = tracker.getNetworkInfo(); 2016 if (info != null && info.isConnected()) { 2017 sendConnectedBroadcast(info); 2018 } 2019 } 2020 } 2021 } 2022 }; 2023 2024 @Override 2025 public void setPolicyDataEnable(int networkType, boolean enabled) { 2026 // only someone like NPMS should only be calling us 2027 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 2028 2029 mHandler.sendMessage(mHandler.obtainMessage( 2030 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 2031 } 2032 2033 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 2034 // TODO - handle this passing to factories 2035// if (isNetworkTypeValid(networkType)) { 2036// final NetworkStateTracker tracker = mNetTrackers[networkType]; 2037// if (tracker != null) { 2038// tracker.setPolicyDataEnable(enabled); 2039// } 2040// } 2041 } 2042 2043 private void enforceAccessPermission() { 2044 mContext.enforceCallingOrSelfPermission( 2045 android.Manifest.permission.ACCESS_NETWORK_STATE, 2046 "ConnectivityService"); 2047 } 2048 2049 private void enforceChangePermission() { 2050 mContext.enforceCallingOrSelfPermission( 2051 android.Manifest.permission.CHANGE_NETWORK_STATE, 2052 "ConnectivityService"); 2053 } 2054 2055 // TODO Make this a special check when it goes public 2056 private void enforceTetherChangePermission() { 2057 mContext.enforceCallingOrSelfPermission( 2058 android.Manifest.permission.CHANGE_NETWORK_STATE, 2059 "ConnectivityService"); 2060 } 2061 2062 private void enforceTetherAccessPermission() { 2063 mContext.enforceCallingOrSelfPermission( 2064 android.Manifest.permission.ACCESS_NETWORK_STATE, 2065 "ConnectivityService"); 2066 } 2067 2068 private void enforceConnectivityInternalPermission() { 2069 mContext.enforceCallingOrSelfPermission( 2070 android.Manifest.permission.CONNECTIVITY_INTERNAL, 2071 "ConnectivityService"); 2072 } 2073 2074 private void enforceMarkNetworkSocketPermission() { 2075 //Media server special case 2076 if (Binder.getCallingUid() == Process.MEDIA_UID) { 2077 return; 2078 } 2079 mContext.enforceCallingOrSelfPermission( 2080 android.Manifest.permission.MARK_NETWORK_SOCKET, 2081 "ConnectivityService"); 2082 } 2083 2084 /** 2085 * Handle a {@code DISCONNECTED} event. If this pertains to the non-active 2086 * network, we ignore it. If it is for the active network, we send out a 2087 * broadcast. But first, we check whether it might be possible to connect 2088 * to a different network. 2089 * @param info the {@code NetworkInfo} for the network 2090 */ 2091 private void handleDisconnect(NetworkInfo info) { 2092 2093 int prevNetType = info.getType(); 2094 2095 mNetTrackers[prevNetType].setTeardownRequested(false); 2096 int thisNetId = mNetTrackers[prevNetType].getNetwork().netId; 2097 2098 // Remove idletimer previously setup in {@code handleConnect} 2099// Already in place in new function. This is dead code. 2100// if (mNetConfigs[prevNetType].isDefault()) { 2101// removeDataActivityTracking(prevNetType); 2102// } 2103 2104 /* 2105 * If the disconnected network is not the active one, then don't report 2106 * this as a loss of connectivity. What probably happened is that we're 2107 * getting the disconnect for a network that we explicitly disabled 2108 * in accordance with network preference policies. 2109 */ 2110 if (!mNetConfigs[prevNetType].isDefault()) { 2111 List<Integer> pids = mNetRequestersPids[prevNetType]; 2112 for (Integer pid : pids) { 2113 // will remove them because the net's no longer connected 2114 // need to do this now as only now do we know the pids and 2115 // can properly null things that are no longer referenced. 2116 reassessPidDns(pid.intValue(), false); 2117 } 2118 } 2119 2120 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 2121 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2122 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2123 if (info.isFailover()) { 2124 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2125 info.setFailover(false); 2126 } 2127 if (info.getReason() != null) { 2128 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2129 } 2130 if (info.getExtraInfo() != null) { 2131 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2132 info.getExtraInfo()); 2133 } 2134 2135 if (mNetConfigs[prevNetType].isDefault()) { 2136 tryFailover(prevNetType); 2137 if (mActiveDefaultNetwork != -1) { 2138 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2139 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 2140 } else { 2141 mDefaultInetConditionPublished = 0; // we're not connected anymore 2142 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2143 } 2144 } 2145 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2146 2147 // Reset interface if no other connections are using the same interface 2148 boolean doReset = true; 2149 LinkProperties linkProperties = mNetTrackers[prevNetType].getLinkProperties(); 2150 if (linkProperties != null) { 2151 String oldIface = linkProperties.getInterfaceName(); 2152 if (TextUtils.isEmpty(oldIface) == false) { 2153 for (NetworkStateTracker networkStateTracker : mNetTrackers) { 2154 if (networkStateTracker == null) continue; 2155 NetworkInfo networkInfo = networkStateTracker.getNetworkInfo(); 2156 if (networkInfo.isConnected() && networkInfo.getType() != prevNetType) { 2157 LinkProperties l = networkStateTracker.getLinkProperties(); 2158 if (l == null) continue; 2159 if (oldIface.equals(l.getInterfaceName())) { 2160 doReset = false; 2161 break; 2162 } 2163 } 2164 } 2165 } 2166 } 2167 2168 // do this before we broadcast the change 2169// Already done in new function. This is dead code. 2170// handleConnectivityChange(prevNetType, doReset); 2171 2172 final Intent immediateIntent = new Intent(intent); 2173 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 2174 sendStickyBroadcast(immediateIntent); 2175 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 2176 /* 2177 * If the failover network is already connected, then immediately send 2178 * out a followup broadcast indicating successful failover 2179 */ 2180 if (mActiveDefaultNetwork != -1) { 2181 sendConnectedBroadcastDelayed(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(), 2182 getConnectivityChangeDelay()); 2183 } 2184 try { 2185// mNetd.removeNetwork(thisNetId); 2186 } catch (Exception e) { 2187 loge("Exception removing network: " + e); 2188 } finally { 2189 mNetTrackers[prevNetType].setNetId(INVALID_NET_ID); 2190 } 2191 } 2192 2193 private void tryFailover(int prevNetType) { 2194 /* 2195 * If this is a default network, check if other defaults are available. 2196 * Try to reconnect on all available and let them hash it out when 2197 * more than one connects. 2198 */ 2199 if (mNetConfigs[prevNetType].isDefault()) { 2200 if (mActiveDefaultNetwork == prevNetType) { 2201 if (DBG) { 2202 log("tryFailover: set mActiveDefaultNetwork=-1, prevNetType=" + prevNetType); 2203 } 2204 mActiveDefaultNetwork = -1; 2205 try { 2206 mNetd.clearDefaultNetId(); 2207 } catch (Exception e) { 2208 loge("Exception clearing default network :" + e); 2209 } 2210 } 2211 2212 // don't signal a reconnect for anything lower or equal priority than our 2213 // current connected default 2214 // TODO - don't filter by priority now - nice optimization but risky 2215// int currentPriority = -1; 2216// if (mActiveDefaultNetwork != -1) { 2217// currentPriority = mNetConfigs[mActiveDefaultNetwork].mPriority; 2218// } 2219 2220 for (int checkType=0; checkType <= ConnectivityManager.MAX_NETWORK_TYPE; checkType++) { 2221 if (checkType == prevNetType) continue; 2222 if (mNetConfigs[checkType] == null) continue; 2223 if (!mNetConfigs[checkType].isDefault()) continue; 2224 if (mNetTrackers[checkType] == null) continue; 2225 2226// Enabling the isAvailable() optimization caused mobile to not get 2227// selected if it was in the middle of error handling. Specifically 2228// a moble connection that took 30 seconds to complete the DEACTIVATE_DATA_CALL 2229// would not be available and we wouldn't get connected to anything. 2230// So removing the isAvailable() optimization below for now. TODO: This 2231// optimization should work and we need to investigate why it doesn't work. 2232// This could be related to how DEACTIVATE_DATA_CALL is reporting its 2233// complete before it is really complete. 2234 2235// if (!mNetTrackers[checkType].isAvailable()) continue; 2236 2237// if (currentPriority >= mNetConfigs[checkType].mPriority) continue; 2238 2239 NetworkStateTracker checkTracker = mNetTrackers[checkType]; 2240 NetworkInfo checkInfo = checkTracker.getNetworkInfo(); 2241 if (!checkInfo.isConnectedOrConnecting() || checkTracker.isTeardownRequested()) { 2242 checkInfo.setFailover(true); 2243 checkTracker.reconnect(); 2244 } 2245 if (DBG) log("Attempting to switch to " + checkInfo.getTypeName()); 2246 } 2247 } 2248 } 2249 2250 public void sendConnectedBroadcast(NetworkInfo info) { 2251 enforceConnectivityInternalPermission(); 2252 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2253 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 2254 } 2255 2256 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 2257 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2258 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 2259 } 2260 2261 private void sendInetConditionBroadcast(NetworkInfo info) { 2262 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 2263 } 2264 2265 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 2266 if (mLockdownTracker != null) { 2267 info = mLockdownTracker.augmentNetworkInfo(info); 2268 } 2269 2270 Intent intent = new Intent(bcastType); 2271 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2272 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2273 if (info.isFailover()) { 2274 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2275 info.setFailover(false); 2276 } 2277 if (info.getReason() != null) { 2278 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2279 } 2280 if (info.getExtraInfo() != null) { 2281 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2282 info.getExtraInfo()); 2283 } 2284 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2285 return intent; 2286 } 2287 2288 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 2289 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 2290 } 2291 2292 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 2293 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 2294 } 2295 2296 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 2297 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 2298 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 2299 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 2300 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 2301 final long ident = Binder.clearCallingIdentity(); 2302 try { 2303 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 2304 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 2305 } finally { 2306 Binder.restoreCallingIdentity(ident); 2307 } 2308 } 2309 2310 private void sendStickyBroadcast(Intent intent) { 2311 synchronized(this) { 2312 if (!mSystemReady) { 2313 mInitialBroadcast = new Intent(intent); 2314 } 2315 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2316 if (VDBG) { 2317 log("sendStickyBroadcast: action=" + intent.getAction()); 2318 } 2319 2320 final long ident = Binder.clearCallingIdentity(); 2321 try { 2322 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2323 } finally { 2324 Binder.restoreCallingIdentity(ident); 2325 } 2326 } 2327 } 2328 2329 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 2330 if (delayMs <= 0) { 2331 sendStickyBroadcast(intent); 2332 } else { 2333 if (VDBG) { 2334 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 2335 + intent.getAction()); 2336 } 2337 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2338 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 2339 } 2340 } 2341 2342 void systemReady() { 2343 if (mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_WIFI)) { 2344 mCaptivePortalTracker = CaptivePortalTracker.makeCaptivePortalTracker(mContext, this); 2345 } 2346 loadGlobalProxy(); 2347 2348 synchronized(this) { 2349 mSystemReady = true; 2350 if (mInitialBroadcast != null) { 2351 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 2352 mInitialBroadcast = null; 2353 } 2354 } 2355 // load the global proxy at startup 2356 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 2357 2358 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 2359 // for user to unlock device. 2360 if (!updateLockdownVpn()) { 2361 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 2362 mContext.registerReceiver(mUserPresentReceiver, filter); 2363 } 2364 } 2365 2366 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 2367 @Override 2368 public void onReceive(Context context, Intent intent) { 2369 // Try creating lockdown tracker, since user present usually means 2370 // unlocked keystore. 2371 if (updateLockdownVpn()) { 2372 mContext.unregisterReceiver(this); 2373 } 2374 } 2375 }; 2376 2377 private boolean isNewNetTypePreferredOverCurrentNetType(int type) { 2378 if (((type != mNetworkPreference) 2379 && (mNetConfigs[mActiveDefaultNetwork].priority > mNetConfigs[type].priority)) 2380 || (mNetworkPreference == mActiveDefaultNetwork)) { 2381 return false; 2382 } 2383 return true; 2384 } 2385 2386 private void handleConnect(NetworkInfo info) { 2387 final int newNetType = info.getType(); 2388 2389 // snapshot isFailover, because sendConnectedBroadcast() resets it 2390 boolean isFailover = info.isFailover(); 2391 final NetworkStateTracker thisNet = mNetTrackers[newNetType]; 2392 final String thisIface = thisNet.getLinkProperties().getInterfaceName(); 2393 2394 if (VDBG) { 2395 log("handleConnect: E newNetType=" + newNetType + " thisIface=" + thisIface 2396 + " isFailover" + isFailover); 2397 } 2398 2399 // if this is a default net and other default is running 2400 // kill the one not preferred 2401 if (mNetConfigs[newNetType].isDefault()) { 2402 if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != newNetType) { 2403 if (isNewNetTypePreferredOverCurrentNetType(newNetType)) { 2404 String teardownPolicy = SystemProperties.get("net.teardownPolicy"); 2405 if (TextUtils.equals(teardownPolicy, "keep") == false) { 2406 // tear down the other 2407 NetworkStateTracker otherNet = 2408 mNetTrackers[mActiveDefaultNetwork]; 2409 if (DBG) { 2410 log("Policy requires " + otherNet.getNetworkInfo().getTypeName() + 2411 " teardown"); 2412 } 2413 if (!teardown(otherNet)) { 2414 loge("Network declined teardown request"); 2415 teardown(thisNet); 2416 return; 2417 } 2418 } else { 2419 //TODO - remove 2420 loge("network teardown skipped due to net.teardownPolicy setting"); 2421 } 2422 } else { 2423 // don't accept this one 2424 if (VDBG) { 2425 log("Not broadcasting CONNECT_ACTION " + 2426 "to torn down network " + info.getTypeName()); 2427 } 2428 teardown(thisNet); 2429 return; 2430 } 2431 } 2432 int thisNetId = nextNetId(); 2433 thisNet.setNetId(thisNetId); 2434 try { 2435// mNetd.createNetwork(thisNetId, thisIface); 2436 } catch (Exception e) { 2437 loge("Exception creating network :" + e); 2438 teardown(thisNet); 2439 return; 2440 } 2441// Already in place in new function. This is dead code. 2442// setupDataActivityTracking(newNetType); 2443 synchronized (ConnectivityService.this) { 2444 // have a new default network, release the transition wakelock in a second 2445 // if it's held. The second pause is to allow apps to reconnect over the 2446 // new network 2447 if (mNetTransitionWakeLock.isHeld()) { 2448 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2449 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 2450 mNetTransitionWakeLockSerialNumber, 0), 2451 1000); 2452 } 2453 } 2454 mActiveDefaultNetwork = newNetType; 2455 try { 2456 mNetd.setDefaultNetId(thisNetId); 2457 } catch (Exception e) { 2458 loge("Exception setting default network :" + e); 2459 } 2460 // this will cause us to come up initially as unconnected and switching 2461 // to connected after our normal pause unless somebody reports us as reall 2462 // disconnected 2463 mDefaultInetConditionPublished = 0; 2464 mDefaultConnectionSequence++; 2465 mInetConditionChangeInFlight = false; 2466 // Don't do this - if we never sign in stay, grey 2467 //reportNetworkCondition(mActiveDefaultNetwork, 100); 2468 updateNetworkSettings(thisNet); 2469 } else { 2470 int thisNetId = nextNetId(); 2471 thisNet.setNetId(thisNetId); 2472 try { 2473// mNetd.createNetwork(thisNetId, thisIface); 2474 } catch (Exception e) { 2475 loge("Exception creating network :" + e); 2476 teardown(thisNet); 2477 return; 2478 } 2479 } 2480 thisNet.setTeardownRequested(false); 2481// Already in place in new function. This is dead code. 2482// updateMtuSizeSettings(thisNet); 2483// handleConnectivityChange(newNetType, false); 2484 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 2485 2486 // notify battery stats service about this network 2487 if (thisIface != null) { 2488 try { 2489 BatteryStatsService.getService().noteNetworkInterfaceType(thisIface, newNetType); 2490 } catch (RemoteException e) { 2491 // ignored; service lives in system_server 2492 } 2493 } 2494 } 2495 2496 /** @hide */ 2497 @Override 2498 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 2499 enforceConnectivityInternalPermission(); 2500 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 2501// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 2502 } 2503 2504 /** 2505 * Setup data activity tracking for the given network. 2506 * 2507 * Every {@code setupDataActivityTracking} should be paired with a 2508 * {@link #removeDataActivityTracking} for cleanup. 2509 */ 2510 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 2511 final String iface = networkAgent.linkProperties.getInterfaceName(); 2512 2513 final int timeout; 2514 int type = ConnectivityManager.TYPE_NONE; 2515 2516 if (networkAgent.networkCapabilities.hasTransport( 2517 NetworkCapabilities.TRANSPORT_CELLULAR)) { 2518 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2519 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 2520 5); 2521 type = ConnectivityManager.TYPE_MOBILE; 2522 } else if (networkAgent.networkCapabilities.hasTransport( 2523 NetworkCapabilities.TRANSPORT_WIFI)) { 2524 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2525 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 2526 0); 2527 type = ConnectivityManager.TYPE_WIFI; 2528 } else { 2529 // do not track any other networks 2530 timeout = 0; 2531 } 2532 2533 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 2534 try { 2535 mNetd.addIdleTimer(iface, timeout, type); 2536 } catch (Exception e) { 2537 // You shall not crash! 2538 loge("Exception in setupDataActivityTracking " + e); 2539 } 2540 } 2541 } 2542 2543 /** 2544 * Remove data activity tracking when network disconnects. 2545 */ 2546 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 2547 final String iface = networkAgent.linkProperties.getInterfaceName(); 2548 final NetworkCapabilities caps = networkAgent.networkCapabilities; 2549 2550 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 2551 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 2552 try { 2553 // the call fails silently if no idletimer setup for this interface 2554 mNetd.removeIdleTimer(iface); 2555 } catch (Exception e) { 2556 loge("Exception in removeDataActivityTracking " + e); 2557 } 2558 } 2559 } 2560 2561 /** 2562 * After a change in the connectivity state of a network. We're mainly 2563 * concerned with making sure that the list of DNS servers is set up 2564 * according to which networks are connected, and ensuring that the 2565 * right routing table entries exist. 2566 * 2567 * TODO - delete when we're sure all this functionallity is captured. 2568 */ 2569 private void handleConnectivityChange(int netType, LinkProperties curLp, boolean doReset) { 2570 int resetMask = doReset ? NetworkUtils.RESET_ALL_ADDRESSES : 0; 2571 boolean exempt = ConnectivityManager.isNetworkTypeExempt(netType); 2572 if (VDBG) { 2573 log("handleConnectivityChange: netType=" + netType + " doReset=" + doReset 2574 + " resetMask=" + resetMask); 2575 } 2576 2577 /* 2578 * If a non-default network is enabled, add the host routes that 2579 * will allow it's DNS servers to be accessed. 2580 */ 2581 handleDnsConfigurationChange(netType); 2582 2583 LinkProperties newLp = null; 2584 2585 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2586 newLp = mNetTrackers[netType].getLinkProperties(); 2587 if (VDBG) { 2588 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2589 " doReset=" + doReset + " resetMask=" + resetMask + 2590 "\n curLp=" + curLp + 2591 "\n newLp=" + newLp); 2592 } 2593 2594 if (curLp != null) { 2595 if (curLp.isIdenticalInterfaceName(newLp)) { 2596 CompareResult<LinkAddress> car = curLp.compareAddresses(newLp); 2597 if ((car.removed.size() != 0) || (car.added.size() != 0)) { 2598 for (LinkAddress linkAddr : car.removed) { 2599 if (linkAddr.getAddress() instanceof Inet4Address) { 2600 resetMask |= NetworkUtils.RESET_IPV4_ADDRESSES; 2601 } 2602 if (linkAddr.getAddress() instanceof Inet6Address) { 2603 resetMask |= NetworkUtils.RESET_IPV6_ADDRESSES; 2604 } 2605 } 2606 if (DBG) { 2607 log("handleConnectivityChange: addresses changed" + 2608 " linkProperty[" + netType + "]:" + " resetMask=" + resetMask + 2609 "\n car=" + car); 2610 } 2611 } else { 2612 if (VDBG) { 2613 log("handleConnectivityChange: addresses are the same reset per" + 2614 " doReset linkProperty[" + netType + "]:" + 2615 " resetMask=" + resetMask); 2616 } 2617 } 2618 } else { 2619 resetMask = NetworkUtils.RESET_ALL_ADDRESSES; 2620 if (DBG) { 2621 log("handleConnectivityChange: interface not not equivalent reset both" + 2622 " linkProperty[" + netType + "]:" + 2623 " resetMask=" + resetMask); 2624 } 2625 } 2626 } 2627 if (mNetConfigs[netType].isDefault()) { 2628 handleApplyDefaultProxy(newLp.getHttpProxy()); 2629 } 2630 } else { 2631 if (VDBG) { 2632 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2633 " doReset=" + doReset + " resetMask=" + resetMask + 2634 "\n curLp=" + curLp + 2635 "\n newLp= null"); 2636 } 2637 } 2638 mCurrentLinkProperties[netType] = newLp; 2639 boolean resetDns = updateRoutes(newLp, curLp, mNetConfigs[netType].isDefault(), exempt, 2640 mNetTrackers[netType].getNetwork().netId); 2641 2642 if (resetMask != 0 || resetDns) { 2643 if (VDBG) log("handleConnectivityChange: resetting"); 2644 if (curLp != null) { 2645 if (VDBG) log("handleConnectivityChange: resetting curLp=" + curLp); 2646 for (String iface : curLp.getAllInterfaceNames()) { 2647 if (TextUtils.isEmpty(iface) == false) { 2648 if (resetMask != 0) { 2649 if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")"); 2650 NetworkUtils.resetConnections(iface, resetMask); 2651 2652 // Tell VPN the interface is down. It is a temporary 2653 // but effective fix to make VPN aware of the change. 2654 if ((resetMask & NetworkUtils.RESET_IPV4_ADDRESSES) != 0) { 2655 synchronized(mVpns) { 2656 for (int i = 0; i < mVpns.size(); i++) { 2657 mVpns.valueAt(i).interfaceStatusChanged(iface, false); 2658 } 2659 } 2660 } 2661 } 2662 } else { 2663 loge("Can't reset connection for type "+netType); 2664 } 2665 } 2666 if (resetDns) { 2667 flushVmDnsCache(); 2668 if (VDBG) log("resetting DNS cache for type " + netType); 2669 try { 2670 mNetd.flushNetworkDnsCache(mNetTrackers[netType].getNetwork().netId); 2671 } catch (Exception e) { 2672 // never crash - catch them all 2673 if (DBG) loge("Exception resetting dns cache: " + e); 2674 } 2675 } 2676 } 2677 } 2678 2679 // TODO: Temporary notifying upstread change to Tethering. 2680 // @see bug/4455071 2681 /** Notify TetheringService if interface name has been changed. */ 2682 if (TextUtils.equals(mNetTrackers[netType].getNetworkInfo().getReason(), 2683 PhoneConstants.REASON_LINK_PROPERTIES_CHANGED)) { 2684 if (isTetheringSupported()) { 2685 mTethering.handleTetherIfaceChange(); 2686 } 2687 } 2688 } 2689 2690 /** 2691 * Add and remove routes using the old properties (null if not previously connected), 2692 * new properties (null if becoming disconnected). May even be double null, which 2693 * is a noop. 2694 * Uses isLinkDefault to determine if default routes should be set or conversely if 2695 * host routes should be set to the dns servers 2696 * returns a boolean indicating the routes changed 2697 */ 2698 private boolean updateRoutes(LinkProperties newLp, LinkProperties curLp, 2699 boolean isLinkDefault, boolean exempt, int netId) { 2700 Collection<RouteInfo> routesToAdd = null; 2701 CompareResult<InetAddress> dnsDiff = new CompareResult<InetAddress>(); 2702 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 2703 if (curLp != null) { 2704 // check for the delta between the current set and the new 2705 routeDiff = curLp.compareAllRoutes(newLp); 2706 dnsDiff = curLp.compareDnses(newLp); 2707 } else if (newLp != null) { 2708 routeDiff.added = newLp.getAllRoutes(); 2709 dnsDiff.added = newLp.getDnsServers(); 2710 } 2711 2712 boolean routesChanged = (routeDiff.removed.size() != 0 || routeDiff.added.size() != 0); 2713 2714 for (RouteInfo r : routeDiff.removed) { 2715 if (isLinkDefault || ! r.isDefaultRoute()) { 2716 if (VDBG) log("updateRoutes: default remove route r=" + r); 2717 removeRoute(curLp, r, TO_DEFAULT_TABLE, netId); 2718 } 2719 if (isLinkDefault == false) { 2720 // remove from a secondary route table 2721 removeRoute(curLp, r, TO_SECONDARY_TABLE, netId); 2722 } 2723 } 2724 2725 for (RouteInfo r : routeDiff.added) { 2726 if (isLinkDefault || ! r.isDefaultRoute()) { 2727 addRoute(newLp, r, TO_DEFAULT_TABLE, exempt, netId); 2728 } else { 2729 // add to a secondary route table 2730 addRoute(newLp, r, TO_SECONDARY_TABLE, UNEXEMPT, netId); 2731 2732 // many radios add a default route even when we don't want one. 2733 // remove the default route unless somebody else has asked for it 2734 String ifaceName = newLp.getInterfaceName(); 2735 synchronized (mRoutesLock) { 2736 if (!TextUtils.isEmpty(ifaceName) && !mAddedRoutes.contains(r)) { 2737 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 2738 try { 2739 mNetd.removeRoute(netId, r); 2740 } catch (Exception e) { 2741 // never crash - catch them all 2742 if (DBG) loge("Exception trying to remove a route: " + e); 2743 } 2744 } 2745 } 2746 } 2747 } 2748 2749 return routesChanged; 2750 } 2751 2752 /** 2753 * Reads the network specific MTU size from reources. 2754 * and set it on it's iface. 2755 */ 2756 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 2757 final String iface = newLp.getInterfaceName(); 2758 final int mtu = newLp.getMtu(); 2759 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 2760 if (VDBG) log("identical MTU - not setting"); 2761 return; 2762 } 2763 2764 if (mtu < 68 || mtu > 10000) { 2765 loge("Unexpected mtu value: " + mtu + ", " + iface); 2766 return; 2767 } 2768 2769 try { 2770 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 2771 mNetd.setMtu(iface, mtu); 2772 } catch (Exception e) { 2773 Slog.e(TAG, "exception in setMtu()" + e); 2774 } 2775 } 2776 2777 /** 2778 * Reads the network specific TCP buffer sizes from SystemProperties 2779 * net.tcp.buffersize.[default|wifi|umts|edge|gprs] and set them for system 2780 * wide use 2781 */ 2782 private void updateNetworkSettings(NetworkStateTracker nt) { 2783 String key = nt.getTcpBufferSizesPropName(); 2784 String bufferSizes = key == null ? null : SystemProperties.get(key); 2785 2786 if (TextUtils.isEmpty(bufferSizes)) { 2787 if (VDBG) log(key + " not found in system properties. Using defaults"); 2788 2789 // Setting to default values so we won't be stuck to previous values 2790 key = "net.tcp.buffersize.default"; 2791 bufferSizes = SystemProperties.get(key); 2792 } 2793 2794 // Set values in kernel 2795 if (bufferSizes.length() != 0) { 2796 if (VDBG) { 2797 log("Setting TCP values: [" + bufferSizes 2798 + "] which comes from [" + key + "]"); 2799 } 2800 setBufferSize(bufferSizes); 2801 } 2802 2803 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 2804 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 2805 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 2806 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 2807 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 2808 if (rwndValue != 0) { 2809 SystemProperties.set(sysctlKey, rwndValue.toString()); 2810 } 2811 } 2812 2813 /** 2814 * Writes TCP buffer sizes to /sys/kernel/ipv4/tcp_[r/w]mem_[min/def/max] 2815 * which maps to /proc/sys/net/ipv4/tcp_rmem and tcpwmem 2816 * 2817 * @param bufferSizes in the format of "readMin, readInitial, readMax, 2818 * writeMin, writeInitial, writeMax" 2819 */ 2820 private void setBufferSize(String bufferSizes) { 2821 try { 2822 String[] values = bufferSizes.split(","); 2823 2824 if (values.length == 6) { 2825 final String prefix = "/sys/kernel/ipv4/tcp_"; 2826 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 2827 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 2828 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 2829 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 2830 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 2831 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 2832 } else { 2833 loge("Invalid buffersize string: " + bufferSizes); 2834 } 2835 } catch (IOException e) { 2836 loge("Can't set tcp buffer sizes:" + e); 2837 } 2838 } 2839 2840 /** 2841 * Adjust the per-process dns entries (net.dns<x>.<pid>) based 2842 * on the highest priority active net which this process requested. 2843 * If there aren't any, clear it out 2844 */ 2845 private void reassessPidDns(int pid, boolean doBump) 2846 { 2847 if (VDBG) log("reassessPidDns for pid " + pid); 2848 Integer myPid = new Integer(pid); 2849 for(int i : mPriorityList) { 2850 if (mNetConfigs[i].isDefault()) { 2851 continue; 2852 } 2853 NetworkStateTracker nt = mNetTrackers[i]; 2854 if (nt.getNetworkInfo().isConnected() && 2855 !nt.isTeardownRequested()) { 2856 LinkProperties p = nt.getLinkProperties(); 2857 if (p == null) continue; 2858 if (mNetRequestersPids[i].contains(myPid)) { 2859 try { 2860 // TODO: Reimplement this via local variable in bionic. 2861 // mNetd.setDnsNetworkForPid(nt.getNetwork().netId, pid); 2862 } catch (Exception e) { 2863 Slog.e(TAG, "exception reasseses pid dns: " + e); 2864 } 2865 return; 2866 } 2867 } 2868 } 2869 // nothing found - delete 2870 try { 2871 // TODO: Reimplement this via local variable in bionic. 2872 // mNetd.clearDnsNetworkForPid(pid); 2873 } catch (Exception e) { 2874 Slog.e(TAG, "exception clear interface from pid: " + e); 2875 } 2876 } 2877 2878 private void flushVmDnsCache() { 2879 /* 2880 * Tell the VMs to toss their DNS caches 2881 */ 2882 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 2883 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 2884 /* 2885 * Connectivity events can happen before boot has completed ... 2886 */ 2887 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2888 final long ident = Binder.clearCallingIdentity(); 2889 try { 2890 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 2891 } finally { 2892 Binder.restoreCallingIdentity(ident); 2893 } 2894 } 2895 2896 // Caller must grab mDnsLock. 2897 private void updateDnsLocked(String network, int netId, 2898 Collection<InetAddress> dnses, String domains) { 2899 int last = 0; 2900 if (dnses.size() == 0 && mDefaultDns != null) { 2901 dnses = new ArrayList(); 2902 dnses.add(mDefaultDns); 2903 if (DBG) { 2904 loge("no dns provided for " + network + " - using " + mDefaultDns.getHostAddress()); 2905 } 2906 } 2907 2908 try { 2909 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), domains); 2910 2911 for (InetAddress dns : dnses) { 2912 ++last; 2913 String key = "net.dns" + last; 2914 String value = dns.getHostAddress(); 2915 SystemProperties.set(key, value); 2916 } 2917 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 2918 String key = "net.dns" + i; 2919 SystemProperties.set(key, ""); 2920 } 2921 mNumDnsEntries = last; 2922 } catch (Exception e) { 2923 loge("exception setting default dns interface: " + e); 2924 } 2925 } 2926 2927 private void handleDnsConfigurationChange(int netType) { 2928 // add default net's dns entries 2929 NetworkStateTracker nt = mNetTrackers[netType]; 2930 if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) { 2931 LinkProperties p = nt.getLinkProperties(); 2932 if (p == null) return; 2933 Collection<InetAddress> dnses = p.getDnsServers(); 2934 int netId = nt.getNetwork().netId; 2935 if (mNetConfigs[netType].isDefault()) { 2936 String network = nt.getNetworkInfo().getTypeName(); 2937 synchronized (mDnsLock) { 2938 updateDnsLocked(network, netId, dnses, p.getDomains()); 2939 } 2940 } else { 2941 try { 2942 mNetd.setDnsServersForNetwork(netId, 2943 NetworkUtils.makeStrings(dnses), p.getDomains()); 2944 } catch (Exception e) { 2945 if (DBG) loge("exception setting dns servers: " + e); 2946 } 2947 // set per-pid dns for attached secondary nets 2948 List<Integer> pids = mNetRequestersPids[netType]; 2949 for (Integer pid : pids) { 2950 try { 2951 // TODO: Reimplement this via local variable in bionic. 2952 // mNetd.setDnsNetworkForPid(netId, pid); 2953 } catch (Exception e) { 2954 Slog.e(TAG, "exception setting interface for pid: " + e); 2955 } 2956 } 2957 } 2958 flushVmDnsCache(); 2959 } 2960 } 2961 2962 @Override 2963 public int getRestoreDefaultNetworkDelay(int networkType) { 2964 String restoreDefaultNetworkDelayStr = SystemProperties.get( 2965 NETWORK_RESTORE_DELAY_PROP_NAME); 2966 if(restoreDefaultNetworkDelayStr != null && 2967 restoreDefaultNetworkDelayStr.length() != 0) { 2968 try { 2969 return Integer.valueOf(restoreDefaultNetworkDelayStr); 2970 } catch (NumberFormatException e) { 2971 } 2972 } 2973 // if the system property isn't set, use the value for the apn type 2974 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 2975 2976 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 2977 (mNetConfigs[networkType] != null)) { 2978 ret = mNetConfigs[networkType].restoreTime; 2979 } 2980 return ret; 2981 } 2982 2983 @Override 2984 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 2985 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 2986 if (mContext.checkCallingOrSelfPermission( 2987 android.Manifest.permission.DUMP) 2988 != PackageManager.PERMISSION_GRANTED) { 2989 pw.println("Permission Denial: can't dump ConnectivityService " + 2990 "from from pid=" + Binder.getCallingPid() + ", uid=" + 2991 Binder.getCallingUid()); 2992 return; 2993 } 2994 2995 pw.println("NetworkFactories for:"); 2996 pw.increaseIndent(); 2997 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2998 pw.println(nfi.name); 2999 } 3000 pw.decreaseIndent(); 3001 pw.println(); 3002 3003 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 3004 pw.print("Active default network: "); 3005 if (defaultNai == null) { 3006 pw.println("none"); 3007 } else { 3008 pw.println(defaultNai.network.netId); 3009 } 3010 pw.println(); 3011 3012 pw.println("Current Networks:"); 3013 pw.increaseIndent(); 3014 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 3015 pw.println(nai.toString()); 3016 pw.increaseIndent(); 3017 pw.println("Requests:"); 3018 pw.increaseIndent(); 3019 for (int i = 0; i < nai.networkRequests.size(); i++) { 3020 pw.println(nai.networkRequests.valueAt(i).toString()); 3021 } 3022 pw.decreaseIndent(); 3023 pw.println("Lingered:"); 3024 pw.increaseIndent(); 3025 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 3026 pw.decreaseIndent(); 3027 pw.decreaseIndent(); 3028 } 3029 pw.decreaseIndent(); 3030 pw.println(); 3031 3032 pw.println("Network Requests:"); 3033 pw.increaseIndent(); 3034 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3035 pw.println(nri.toString()); 3036 } 3037 pw.println(); 3038 pw.decreaseIndent(); 3039 3040 synchronized (this) { 3041 pw.println("NetworkTranstionWakeLock is currently " + 3042 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 3043 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 3044 } 3045 pw.println(); 3046 3047 mTethering.dump(fd, pw, args); 3048 3049 if (mInetLog != null) { 3050 pw.println(); 3051 pw.println("Inet condition reports:"); 3052 pw.increaseIndent(); 3053 for(int i = 0; i < mInetLog.size(); i++) { 3054 pw.println(mInetLog.get(i)); 3055 } 3056 pw.decreaseIndent(); 3057 } 3058 } 3059 3060 // must be stateless - things change under us. 3061 private class NetworkStateTrackerHandler extends Handler { 3062 public NetworkStateTrackerHandler(Looper looper) { 3063 super(looper); 3064 } 3065 3066 @Override 3067 public void handleMessage(Message msg) { 3068 NetworkInfo info; 3069 switch (msg.what) { 3070 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 3071 handleAsyncChannelHalfConnect(msg); 3072 break; 3073 } 3074 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 3075 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3076 if (nai != null) nai.asyncChannel.disconnect(); 3077 break; 3078 } 3079 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 3080 handleAsyncChannelDisconnected(msg); 3081 break; 3082 } 3083 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 3084 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3085 if (nai == null) { 3086 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 3087 } else { 3088 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 3089 } 3090 break; 3091 } 3092 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 3093 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3094 if (nai == null) { 3095 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 3096 } else { 3097 if (VDBG) log("Update of Linkproperties for " + nai.name()); 3098 LinkProperties oldLp = nai.linkProperties; 3099 nai.linkProperties = (LinkProperties)msg.obj; 3100 updateLinkProperties(nai, oldLp); 3101 } 3102 break; 3103 } 3104 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 3105 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3106 if (nai == null) { 3107 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 3108 break; 3109 } 3110 info = (NetworkInfo) msg.obj; 3111 updateNetworkInfo(nai, info); 3112 break; 3113 } 3114 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 3115 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3116 if (nai == null) { 3117 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 3118 break; 3119 } 3120 Integer score = (Integer) msg.obj; 3121 if (score != null) updateNetworkScore(nai, score.intValue()); 3122 break; 3123 } 3124 case NetworkMonitor.EVENT_NETWORK_VALIDATED: { 3125 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 3126 handleConnectionValidated(nai); 3127 break; 3128 } 3129 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 3130 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 3131 handleLingerComplete(nai); 3132 break; 3133 } 3134 case NetworkStateTracker.EVENT_STATE_CHANGED: { 3135 info = (NetworkInfo) msg.obj; 3136 NetworkInfo.State state = info.getState(); 3137 3138 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 3139 (state == NetworkInfo.State.DISCONNECTED) || 3140 (state == NetworkInfo.State.SUSPENDED)) { 3141 log("ConnectivityChange for " + 3142 info.getTypeName() + ": " + 3143 state + "/" + info.getDetailedState()); 3144 } 3145 3146 // Since mobile has the notion of a network/apn that can be used for 3147 // provisioning we need to check every time we're connected as 3148 // CaptiveProtalTracker won't detected it because DCT doesn't report it 3149 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 3150 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 3151 // is received by MDST and sent here as EVENT_STATE_CHANGED. 3152 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 3153 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 3154 Settings.Global.DEVICE_PROVISIONED, 0)) 3155 && (((state == NetworkInfo.State.CONNECTED) 3156 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 3157 || info.isConnectedToProvisioningNetwork())) { 3158 log("ConnectivityChange checkMobileProvisioning for" 3159 + " TYPE_MOBILE or ProvisioningNetwork"); 3160 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 3161 } 3162 3163 EventLogTags.writeConnectivityStateChanged( 3164 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 3165 3166 if (info.isConnectedToProvisioningNetwork()) { 3167 /** 3168 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 3169 * for now its an in between network, its a network that 3170 * is actually a default network but we don't want it to be 3171 * announced as such to keep background applications from 3172 * trying to use it. It turns out that some still try so we 3173 * take the additional step of clearing any default routes 3174 * to the link that may have incorrectly setup by the lower 3175 * levels. 3176 */ 3177 LinkProperties lp = getLinkPropertiesForTypeInternal(info.getType()); 3178 if (DBG) { 3179 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 3180 } 3181 3182 // Clear any default routes setup by the radio so 3183 // any activity by applications trying to use this 3184 // connection will fail until the provisioning network 3185 // is enabled. 3186 for (RouteInfo r : lp.getRoutes()) { 3187 removeRoute(lp, r, TO_DEFAULT_TABLE, 3188 mNetTrackers[info.getType()].getNetwork().netId); 3189 } 3190 } else if (state == NetworkInfo.State.DISCONNECTED) { 3191 } else if (state == NetworkInfo.State.SUSPENDED) { 3192 } else if (state == NetworkInfo.State.CONNECTED) { 3193 // handleConnect(info); 3194 } 3195 if (mLockdownTracker != null) { 3196 mLockdownTracker.onNetworkInfoChanged(info); 3197 } 3198 break; 3199 } 3200 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 3201 info = (NetworkInfo) msg.obj; 3202 // TODO: Temporary allowing network configuration 3203 // change not resetting sockets. 3204 // @see bug/4455071 3205 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 3206 false); 3207 break; 3208 } 3209 case NetworkStateTracker.EVENT_NETWORK_SUBTYPE_CHANGED: { 3210 info = (NetworkInfo) msg.obj; 3211 int type = info.getType(); 3212 if (mNetConfigs[type].isDefault()) updateNetworkSettings(mNetTrackers[type]); 3213 break; 3214 } 3215 } 3216 } 3217 } 3218 3219 private void handleAsyncChannelHalfConnect(Message msg) { 3220 AsyncChannel ac = (AsyncChannel) msg.obj; 3221 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 3222 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3223 if (VDBG) log("NetworkFactory connected"); 3224 // A network factory has connected. Send it all current NetworkRequests. 3225 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3226 if (nri.isRequest == false) continue; 3227 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 3228 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 3229 (nai != null ? nai.currentScore : 0), 0, nri.request); 3230 } 3231 } else { 3232 loge("Error connecting NetworkFactory"); 3233 mNetworkFactoryInfos.remove(msg.obj); 3234 } 3235 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 3236 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3237 if (VDBG) log("NetworkAgent connected"); 3238 // A network agent has requested a connection. Establish the connection. 3239 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 3240 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 3241 } else { 3242 loge("Error connecting NetworkAgent"); 3243 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 3244 if (nai != null) { 3245 mNetworkForNetId.remove(nai.network.netId); 3246 mLegacyTypeTracker.remove(nai); 3247 } 3248 } 3249 } 3250 } 3251 private void handleAsyncChannelDisconnected(Message msg) { 3252 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3253 if (nai != null) { 3254 if (DBG) { 3255 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 3256 } 3257 // A network agent has disconnected. 3258 // Tell netd to clean up the configuration for this network 3259 // (routing rules, DNS, etc). 3260 try { 3261 mNetd.removeNetwork(nai.network.netId); 3262 } catch (Exception e) { 3263 loge("Exception removing network: " + e); 3264 } 3265 // TODO - if we move the logic to the network agent (have them disconnect 3266 // because they lost all their requests or because their score isn't good) 3267 // then they would disconnect organically, report their new state and then 3268 // disconnect the channel. 3269 if (nai.networkInfo.isConnected()) { 3270 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 3271 null, null); 3272 } 3273 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 3274 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 3275 mNetworkAgentInfos.remove(msg.replyTo); 3276 updateClat(null, nai.linkProperties, nai); 3277 mLegacyTypeTracker.remove(nai); 3278 mNetworkForNetId.remove(nai.network.netId); 3279 // Since we've lost the network, go through all the requests that 3280 // it was satisfying and see if any other factory can satisfy them. 3281 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 3282 for (int i = 0; i < nai.networkRequests.size(); i++) { 3283 NetworkRequest request = nai.networkRequests.valueAt(i); 3284 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 3285 if (VDBG) { 3286 log(" checking request " + request + ", currentNetwork = " + 3287 (currentNetwork != null ? currentNetwork.name() : "null")); 3288 } 3289 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 3290 mNetworkForRequestId.remove(request.requestId); 3291 sendUpdatedScoreToFactories(request, 0); 3292 NetworkAgentInfo alternative = null; 3293 for (Map.Entry entry : mNetworkAgentInfos.entrySet()) { 3294 NetworkAgentInfo existing = (NetworkAgentInfo)entry.getValue(); 3295 if (existing.networkInfo.isConnected() && 3296 request.networkCapabilities.satisfiedByNetworkCapabilities( 3297 existing.networkCapabilities) && 3298 (alternative == null || 3299 alternative.currentScore < existing.currentScore)) { 3300 alternative = existing; 3301 } 3302 } 3303 if (alternative != null && !toActivate.contains(alternative)) { 3304 toActivate.add(alternative); 3305 } 3306 } 3307 } 3308 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 3309 removeDataActivityTracking(nai); 3310 mActiveDefaultNetwork = ConnectivityManager.TYPE_NONE; 3311 requestNetworkTransitionWakelock(nai.name()); 3312 } 3313 for (NetworkAgentInfo networkToActivate : toActivate) { 3314 networkToActivate.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 3315 } 3316 } 3317 } 3318 3319 private void handleRegisterNetworkRequest(Message msg) { 3320 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 3321 final NetworkCapabilities newCap = nri.request.networkCapabilities; 3322 int score = 0; 3323 3324 // Check for the best currently alive network that satisfies this request 3325 NetworkAgentInfo bestNetwork = null; 3326 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 3327 if (VDBG) log("handleRegisterNetworkRequest checking " + network.name()); 3328 if (newCap.satisfiedByNetworkCapabilities(network.networkCapabilities)) { 3329 if (VDBG) log("apparently satisfied. currentScore=" + network.currentScore); 3330 if ((bestNetwork == null) || bestNetwork.currentScore < network.currentScore) { 3331 bestNetwork = network; 3332 } 3333 } 3334 } 3335 if (bestNetwork != null) { 3336 if (VDBG) log("using " + bestNetwork.name()); 3337 if (nri.isRequest && bestNetwork.networkInfo.isConnected()) { 3338 // Cancel any lingering so the linger timeout doesn't teardown this network 3339 // even though we have a request for it. 3340 bestNetwork.networkLingered.clear(); 3341 bestNetwork.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 3342 } 3343 bestNetwork.addRequest(nri.request); 3344 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 3345 int legacyType = nri.request.legacyType; 3346 if (legacyType != TYPE_NONE) { 3347 mLegacyTypeTracker.add(legacyType, bestNetwork); 3348 } 3349 notifyNetworkCallback(bestNetwork, nri); 3350 score = bestNetwork.currentScore; 3351 } 3352 mNetworkRequests.put(nri.request, nri); 3353 if (msg.what == EVENT_REGISTER_NETWORK_REQUEST) { 3354 if (DBG) log("sending new NetworkRequest to factories"); 3355 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3356 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 3357 0, nri.request); 3358 } 3359 } 3360 } 3361 3362 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 3363 NetworkRequestInfo nri = mNetworkRequests.get(request); 3364 if (nri != null) { 3365 if (nri.mUid != callingUid) { 3366 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 3367 return; 3368 } 3369 if (DBG) log("releasing NetworkRequest " + request); 3370 mNetworkRequests.remove(request); 3371 // tell the network currently servicing this that it's no longer interested 3372 NetworkAgentInfo affectedNetwork = mNetworkForRequestId.get(nri.request.requestId); 3373 if (affectedNetwork != null) { 3374 mNetworkForRequestId.remove(nri.request.requestId); 3375 affectedNetwork.networkRequests.remove(nri.request.requestId); 3376 if (VDBG) { 3377 log(" Removing from current network " + affectedNetwork.name() + ", leaving " + 3378 affectedNetwork.networkRequests.size() + " requests."); 3379 } 3380 } 3381 3382 if (nri.isRequest) { 3383 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3384 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 3385 nri.request); 3386 } 3387 3388 if (affectedNetwork != null) { 3389 // check if this network still has live requests - otherwise, tear down 3390 // TODO - probably push this to the NF/NA 3391 boolean keep = false; 3392 for (int i = 0; i < affectedNetwork.networkRequests.size(); i++) { 3393 NetworkRequest r = affectedNetwork.networkRequests.valueAt(i); 3394 if (mNetworkRequests.get(r).isRequest) { 3395 keep = true; 3396 break; 3397 } 3398 } 3399 if (keep == false) { 3400 if (DBG) log("no live requests for " + affectedNetwork.name() + 3401 "; disconnecting"); 3402 affectedNetwork.asyncChannel.disconnect(); 3403 } 3404 } 3405 } 3406 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 3407 } 3408 } 3409 3410 private class InternalHandler extends Handler { 3411 public InternalHandler(Looper looper) { 3412 super(looper); 3413 } 3414 3415 @Override 3416 public void handleMessage(Message msg) { 3417 NetworkInfo info; 3418 switch (msg.what) { 3419 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 3420 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 3421 String causedBy = null; 3422 synchronized (ConnectivityService.this) { 3423 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 3424 mNetTransitionWakeLock.isHeld()) { 3425 mNetTransitionWakeLock.release(); 3426 causedBy = mNetTransitionWakeLockCausedBy; 3427 } else { 3428 break; 3429 } 3430 } 3431 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 3432 log("Failed to find a new network - expiring NetTransition Wakelock"); 3433 } else { 3434 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 3435 " cleared because we found a replacement network"); 3436 } 3437 break; 3438 } 3439 case EVENT_RESTORE_DEFAULT_NETWORK: { 3440 FeatureUser u = (FeatureUser)msg.obj; 3441 u.expire(); 3442 break; 3443 } 3444 case EVENT_INET_CONDITION_CHANGE: { 3445 int netType = msg.arg1; 3446 int condition = msg.arg2; 3447 handleInetConditionChange(netType, condition); 3448 break; 3449 } 3450 case EVENT_INET_CONDITION_HOLD_END: { 3451 int netType = msg.arg1; 3452 int sequence = msg.arg2; 3453 handleInetConditionHoldEnd(netType, sequence); 3454 break; 3455 } 3456 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 3457 handleDeprecatedGlobalHttpProxy(); 3458 break; 3459 } 3460 case EVENT_SET_DEPENDENCY_MET: { 3461 boolean met = (msg.arg1 == ENABLED); 3462 handleSetDependencyMet(msg.arg2, met); 3463 break; 3464 } 3465 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 3466 Intent intent = (Intent)msg.obj; 3467 sendStickyBroadcast(intent); 3468 break; 3469 } 3470 case EVENT_SET_POLICY_DATA_ENABLE: { 3471 final int networkType = msg.arg1; 3472 final boolean enabled = msg.arg2 == ENABLED; 3473 handleSetPolicyDataEnable(networkType, enabled); 3474 break; 3475 } 3476 case EVENT_VPN_STATE_CHANGED: { 3477 if (mLockdownTracker != null) { 3478 mLockdownTracker.onVpnStateChanged((NetworkInfo) msg.obj); 3479 } 3480 break; 3481 } 3482 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 3483 int tag = mEnableFailFastMobileDataTag.get(); 3484 if (msg.arg1 == tag) { 3485 MobileDataStateTracker mobileDst = 3486 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3487 if (mobileDst != null) { 3488 mobileDst.setEnableFailFastMobileData(msg.arg2); 3489 } 3490 } else { 3491 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 3492 + " != tag:" + tag); 3493 } 3494 break; 3495 } 3496 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 3497 handleNetworkSamplingTimeout(); 3498 break; 3499 } 3500 case EVENT_PROXY_HAS_CHANGED: { 3501 handleApplyDefaultProxy((ProxyInfo)msg.obj); 3502 break; 3503 } 3504 case EVENT_REGISTER_NETWORK_FACTORY: { 3505 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 3506 break; 3507 } 3508 case EVENT_UNREGISTER_NETWORK_FACTORY: { 3509 handleUnregisterNetworkFactory((Messenger)msg.obj); 3510 break; 3511 } 3512 case EVENT_REGISTER_NETWORK_AGENT: { 3513 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 3514 break; 3515 } 3516 case EVENT_REGISTER_NETWORK_REQUEST: 3517 case EVENT_REGISTER_NETWORK_LISTENER: { 3518 handleRegisterNetworkRequest(msg); 3519 break; 3520 } 3521 case EVENT_RELEASE_NETWORK_REQUEST: { 3522 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 3523 break; 3524 } 3525 } 3526 } 3527 } 3528 3529 // javadoc from interface 3530 public int tether(String iface) { 3531 enforceTetherChangePermission(); 3532 3533 if (isTetheringSupported()) { 3534 return mTethering.tether(iface); 3535 } else { 3536 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3537 } 3538 } 3539 3540 // javadoc from interface 3541 public int untether(String iface) { 3542 enforceTetherChangePermission(); 3543 3544 if (isTetheringSupported()) { 3545 return mTethering.untether(iface); 3546 } else { 3547 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3548 } 3549 } 3550 3551 // javadoc from interface 3552 public int getLastTetherError(String iface) { 3553 enforceTetherAccessPermission(); 3554 3555 if (isTetheringSupported()) { 3556 return mTethering.getLastTetherError(iface); 3557 } else { 3558 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3559 } 3560 } 3561 3562 // TODO - proper iface API for selection by property, inspection, etc 3563 public String[] getTetherableUsbRegexs() { 3564 enforceTetherAccessPermission(); 3565 if (isTetheringSupported()) { 3566 return mTethering.getTetherableUsbRegexs(); 3567 } else { 3568 return new String[0]; 3569 } 3570 } 3571 3572 public String[] getTetherableWifiRegexs() { 3573 enforceTetherAccessPermission(); 3574 if (isTetheringSupported()) { 3575 return mTethering.getTetherableWifiRegexs(); 3576 } else { 3577 return new String[0]; 3578 } 3579 } 3580 3581 public String[] getTetherableBluetoothRegexs() { 3582 enforceTetherAccessPermission(); 3583 if (isTetheringSupported()) { 3584 return mTethering.getTetherableBluetoothRegexs(); 3585 } else { 3586 return new String[0]; 3587 } 3588 } 3589 3590 public int setUsbTethering(boolean enable) { 3591 enforceTetherChangePermission(); 3592 if (isTetheringSupported()) { 3593 return mTethering.setUsbTethering(enable); 3594 } else { 3595 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3596 } 3597 } 3598 3599 // TODO - move iface listing, queries, etc to new module 3600 // javadoc from interface 3601 public String[] getTetherableIfaces() { 3602 enforceTetherAccessPermission(); 3603 return mTethering.getTetherableIfaces(); 3604 } 3605 3606 public String[] getTetheredIfaces() { 3607 enforceTetherAccessPermission(); 3608 return mTethering.getTetheredIfaces(); 3609 } 3610 3611 public String[] getTetheringErroredIfaces() { 3612 enforceTetherAccessPermission(); 3613 return mTethering.getErroredIfaces(); 3614 } 3615 3616 // if ro.tether.denied = true we default to no tethering 3617 // gservices could set the secure setting to 1 though to enable it on a build where it 3618 // had previously been turned off. 3619 public boolean isTetheringSupported() { 3620 enforceTetherAccessPermission(); 3621 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 3622 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 3623 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 3624 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 3625 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 3626 mTethering.getTetherableWifiRegexs().length != 0 || 3627 mTethering.getTetherableBluetoothRegexs().length != 0) && 3628 mTethering.getUpstreamIfaceTypes().length != 0); 3629 } 3630 3631 // Called when we lose the default network and have no replacement yet. 3632 // This will automatically be cleared after X seconds or a new default network 3633 // becomes CONNECTED, whichever happens first. The timer is started by the 3634 // first caller and not restarted by subsequent callers. 3635 private void requestNetworkTransitionWakelock(String forWhom) { 3636 int serialNum = 0; 3637 synchronized (this) { 3638 if (mNetTransitionWakeLock.isHeld()) return; 3639 serialNum = ++mNetTransitionWakeLockSerialNumber; 3640 mNetTransitionWakeLock.acquire(); 3641 mNetTransitionWakeLockCausedBy = forWhom; 3642 } 3643 mHandler.sendMessageDelayed(mHandler.obtainMessage( 3644 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 3645 mNetTransitionWakeLockTimeout); 3646 return; 3647 } 3648 3649 // 100 percent is full good, 0 is full bad. 3650 public void reportInetCondition(int networkType, int percentage) { 3651 if (VDBG) log("reportNetworkCondition(" + networkType + ", " + percentage + ")"); 3652 mContext.enforceCallingOrSelfPermission( 3653 android.Manifest.permission.STATUS_BAR, 3654 "ConnectivityService"); 3655 3656 if (DBG) { 3657 int pid = getCallingPid(); 3658 int uid = getCallingUid(); 3659 String s = pid + "(" + uid + ") reports inet is " + 3660 (percentage > 50 ? "connected" : "disconnected") + " (" + percentage + ") on " + 3661 "network Type " + networkType + " at " + GregorianCalendar.getInstance().getTime(); 3662 mInetLog.add(s); 3663 while(mInetLog.size() > INET_CONDITION_LOG_MAX_SIZE) { 3664 mInetLog.remove(0); 3665 } 3666 } 3667 mHandler.sendMessage(mHandler.obtainMessage( 3668 EVENT_INET_CONDITION_CHANGE, networkType, percentage)); 3669 } 3670 3671 public void reportBadNetwork(Network network) { 3672 //TODO 3673 } 3674 3675 private void handleInetConditionChange(int netType, int condition) { 3676 if (mActiveDefaultNetwork == -1) { 3677 if (DBG) log("handleInetConditionChange: no active default network - ignore"); 3678 return; 3679 } 3680 if (mActiveDefaultNetwork != netType) { 3681 if (DBG) log("handleInetConditionChange: net=" + netType + 3682 " != default=" + mActiveDefaultNetwork + " - ignore"); 3683 return; 3684 } 3685 if (VDBG) { 3686 log("handleInetConditionChange: net=" + 3687 netType + ", condition=" + condition + 3688 ",mActiveDefaultNetwork=" + mActiveDefaultNetwork); 3689 } 3690 mDefaultInetCondition = condition; 3691 int delay; 3692 if (mInetConditionChangeInFlight == false) { 3693 if (VDBG) log("handleInetConditionChange: starting a change hold"); 3694 // setup a new hold to debounce this 3695 if (mDefaultInetCondition > 50) { 3696 delay = Settings.Global.getInt(mContext.getContentResolver(), 3697 Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY, 500); 3698 } else { 3699 delay = Settings.Global.getInt(mContext.getContentResolver(), 3700 Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 3000); 3701 } 3702 mInetConditionChangeInFlight = true; 3703 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_INET_CONDITION_HOLD_END, 3704 mActiveDefaultNetwork, mDefaultConnectionSequence), delay); 3705 } else { 3706 // we've set the new condition, when this hold ends that will get picked up 3707 if (VDBG) log("handleInetConditionChange: currently in hold - not setting new end evt"); 3708 } 3709 } 3710 3711 private void handleInetConditionHoldEnd(int netType, int sequence) { 3712 if (DBG) { 3713 log("handleInetConditionHoldEnd: net=" + netType + 3714 ", condition=" + mDefaultInetCondition + 3715 ", published condition=" + mDefaultInetConditionPublished); 3716 } 3717 mInetConditionChangeInFlight = false; 3718 3719 if (mActiveDefaultNetwork == -1) { 3720 if (DBG) log("handleInetConditionHoldEnd: no active default network - ignoring"); 3721 return; 3722 } 3723 if (mDefaultConnectionSequence != sequence) { 3724 if (DBG) log("handleInetConditionHoldEnd: event hold for obsolete network - ignoring"); 3725 return; 3726 } 3727 // TODO: Figure out why this optimization sometimes causes a 3728 // change in mDefaultInetCondition to be missed and the 3729 // UI to not be updated. 3730 //if (mDefaultInetConditionPublished == mDefaultInetCondition) { 3731 // if (DBG) log("no change in condition - aborting"); 3732 // return; 3733 //} 3734 NetworkInfo networkInfo = getNetworkInfoForType(mActiveDefaultNetwork); 3735 if (networkInfo.isConnected() == false) { 3736 if (DBG) log("handleInetConditionHoldEnd: default network not connected - ignoring"); 3737 return; 3738 } 3739 mDefaultInetConditionPublished = mDefaultInetCondition; 3740 sendInetConditionBroadcast(networkInfo); 3741 return; 3742 } 3743 3744 public ProxyInfo getProxy() { 3745 // this information is already available as a world read/writable jvm property 3746 // so this API change wouldn't have a benifit. It also breaks the passing 3747 // of proxy info to all the JVMs. 3748 // enforceAccessPermission(); 3749 synchronized (mProxyLock) { 3750 ProxyInfo ret = mGlobalProxy; 3751 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 3752 return ret; 3753 } 3754 } 3755 3756 public void setGlobalProxy(ProxyInfo proxyProperties) { 3757 enforceConnectivityInternalPermission(); 3758 3759 synchronized (mProxyLock) { 3760 if (proxyProperties == mGlobalProxy) return; 3761 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 3762 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 3763 3764 String host = ""; 3765 int port = 0; 3766 String exclList = ""; 3767 String pacFileUrl = ""; 3768 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 3769 (proxyProperties.getPacFileUrl() != null))) { 3770 if (!proxyProperties.isValid()) { 3771 if (DBG) 3772 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3773 return; 3774 } 3775 mGlobalProxy = new ProxyInfo(proxyProperties); 3776 host = mGlobalProxy.getHost(); 3777 port = mGlobalProxy.getPort(); 3778 exclList = mGlobalProxy.getExclusionListAsString(); 3779 if (proxyProperties.getPacFileUrl() != null) { 3780 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 3781 } 3782 } else { 3783 mGlobalProxy = null; 3784 } 3785 ContentResolver res = mContext.getContentResolver(); 3786 final long token = Binder.clearCallingIdentity(); 3787 try { 3788 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 3789 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 3790 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 3791 exclList); 3792 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 3793 } finally { 3794 Binder.restoreCallingIdentity(token); 3795 } 3796 } 3797 3798 if (mGlobalProxy == null) { 3799 proxyProperties = mDefaultProxy; 3800 } 3801 sendProxyBroadcast(proxyProperties); 3802 } 3803 3804 private void loadGlobalProxy() { 3805 ContentResolver res = mContext.getContentResolver(); 3806 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 3807 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 3808 String exclList = Settings.Global.getString(res, 3809 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 3810 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 3811 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 3812 ProxyInfo proxyProperties; 3813 if (!TextUtils.isEmpty(pacFileUrl)) { 3814 proxyProperties = new ProxyInfo(pacFileUrl); 3815 } else { 3816 proxyProperties = new ProxyInfo(host, port, exclList); 3817 } 3818 if (!proxyProperties.isValid()) { 3819 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3820 return; 3821 } 3822 3823 synchronized (mProxyLock) { 3824 mGlobalProxy = proxyProperties; 3825 } 3826 } 3827 } 3828 3829 public ProxyInfo getGlobalProxy() { 3830 // this information is already available as a world read/writable jvm property 3831 // so this API change wouldn't have a benifit. It also breaks the passing 3832 // of proxy info to all the JVMs. 3833 // enforceAccessPermission(); 3834 synchronized (mProxyLock) { 3835 return mGlobalProxy; 3836 } 3837 } 3838 3839 private void handleApplyDefaultProxy(ProxyInfo proxy) { 3840 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3841 && (proxy.getPacFileUrl() == null)) { 3842 proxy = null; 3843 } 3844 synchronized (mProxyLock) { 3845 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3846 if (mDefaultProxy == proxy) return; // catches repeated nulls 3847 if (proxy != null && !proxy.isValid()) { 3848 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3849 return; 3850 } 3851 3852 // This call could be coming from the PacManager, containing the port of the local 3853 // proxy. If this new proxy matches the global proxy then copy this proxy to the 3854 // global (to get the correct local port), and send a broadcast. 3855 // TODO: Switch PacManager to have its own message to send back rather than 3856 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 3857 if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null) 3858 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 3859 mGlobalProxy = proxy; 3860 sendProxyBroadcast(mGlobalProxy); 3861 return; 3862 } 3863 mDefaultProxy = proxy; 3864 3865 if (mGlobalProxy != null) return; 3866 if (!mDefaultProxyDisabled) { 3867 sendProxyBroadcast(proxy); 3868 } 3869 } 3870 } 3871 3872 private void handleDeprecatedGlobalHttpProxy() { 3873 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3874 Settings.Global.HTTP_PROXY); 3875 if (!TextUtils.isEmpty(proxy)) { 3876 String data[] = proxy.split(":"); 3877 if (data.length == 0) { 3878 return; 3879 } 3880 3881 String proxyHost = data[0]; 3882 int proxyPort = 8080; 3883 if (data.length > 1) { 3884 try { 3885 proxyPort = Integer.parseInt(data[1]); 3886 } catch (NumberFormatException e) { 3887 return; 3888 } 3889 } 3890 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 3891 setGlobalProxy(p); 3892 } 3893 } 3894 3895 private void sendProxyBroadcast(ProxyInfo proxy) { 3896 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 3897 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3898 if (DBG) log("sending Proxy Broadcast for " + proxy); 3899 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3900 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3901 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3902 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3903 final long ident = Binder.clearCallingIdentity(); 3904 try { 3905 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3906 } finally { 3907 Binder.restoreCallingIdentity(ident); 3908 } 3909 } 3910 3911 private static class SettingsObserver extends ContentObserver { 3912 private int mWhat; 3913 private Handler mHandler; 3914 SettingsObserver(Handler handler, int what) { 3915 super(handler); 3916 mHandler = handler; 3917 mWhat = what; 3918 } 3919 3920 void observe(Context context) { 3921 ContentResolver resolver = context.getContentResolver(); 3922 resolver.registerContentObserver(Settings.Global.getUriFor( 3923 Settings.Global.HTTP_PROXY), false, this); 3924 } 3925 3926 @Override 3927 public void onChange(boolean selfChange) { 3928 mHandler.obtainMessage(mWhat).sendToTarget(); 3929 } 3930 } 3931 3932 private static void log(String s) { 3933 Slog.d(TAG, s); 3934 } 3935 3936 private static void loge(String s) { 3937 Slog.e(TAG, s); 3938 } 3939 3940 int convertFeatureToNetworkType(int networkType, String feature) { 3941 int usedNetworkType = networkType; 3942 3943 if(networkType == ConnectivityManager.TYPE_MOBILE) { 3944 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 3945 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 3946 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 3947 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 3948 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 3949 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 3950 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 3951 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 3952 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 3953 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 3954 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 3955 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 3956 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 3957 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 3958 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 3959 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_EMERGENCY)) { 3960 usedNetworkType = ConnectivityManager.TYPE_MOBILE_EMERGENCY; 3961 } else { 3962 Slog.e(TAG, "Can't match any mobile netTracker!"); 3963 } 3964 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 3965 if (TextUtils.equals(feature, "p2p")) { 3966 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 3967 } else { 3968 Slog.e(TAG, "Can't match any wifi netTracker!"); 3969 } 3970 } else { 3971 Slog.e(TAG, "Unexpected network type"); 3972 } 3973 return usedNetworkType; 3974 } 3975 3976 private static <T> T checkNotNull(T value, String message) { 3977 if (value == null) { 3978 throw new NullPointerException(message); 3979 } 3980 return value; 3981 } 3982 3983 /** 3984 * Protect a socket from VPN routing rules. This method is used by 3985 * VpnBuilder and not available in ConnectivityManager. Permissions 3986 * are checked in Vpn class. 3987 * @hide 3988 */ 3989 @Override 3990 public boolean protectVpn(ParcelFileDescriptor socket) { 3991 throwIfLockdownEnabled(); 3992 try { 3993 int type = mActiveDefaultNetwork; 3994 int user = UserHandle.getUserId(Binder.getCallingUid()); 3995 if (ConnectivityManager.isNetworkTypeValid(type) && mNetTrackers[type] != null) { 3996 synchronized(mVpns) { 3997 mVpns.get(user).protect(socket); 3998 } 3999 return true; 4000 } 4001 } catch (Exception e) { 4002 // ignore 4003 } finally { 4004 try { 4005 socket.close(); 4006 } catch (Exception e) { 4007 // ignore 4008 } 4009 } 4010 return false; 4011 } 4012 4013 /** 4014 * Prepare for a VPN application. This method is used by VpnDialogs 4015 * and not available in ConnectivityManager. Permissions are checked 4016 * in Vpn class. 4017 * @hide 4018 */ 4019 @Override 4020 public boolean prepareVpn(String oldPackage, String newPackage) { 4021 throwIfLockdownEnabled(); 4022 int user = UserHandle.getUserId(Binder.getCallingUid()); 4023 synchronized(mVpns) { 4024 return mVpns.get(user).prepare(oldPackage, newPackage); 4025 } 4026 } 4027 4028 @Override 4029 public void markSocketAsUser(ParcelFileDescriptor socket, int uid) { 4030 enforceMarkNetworkSocketPermission(); 4031 final long token = Binder.clearCallingIdentity(); 4032 try { 4033 int mark = mNetd.getMarkForUid(uid); 4034 // Clear the mark on the socket if no mark is needed to prevent socket reuse issues 4035 if (mark == -1) { 4036 mark = 0; 4037 } 4038 NetworkUtils.markSocket(socket.getFd(), mark); 4039 } catch (RemoteException e) { 4040 } finally { 4041 Binder.restoreCallingIdentity(token); 4042 } 4043 } 4044 4045 /** 4046 * Configure a TUN interface and return its file descriptor. Parameters 4047 * are encoded and opaque to this class. This method is used by VpnBuilder 4048 * and not available in ConnectivityManager. Permissions are checked in 4049 * Vpn class. 4050 * @hide 4051 */ 4052 @Override 4053 public ParcelFileDescriptor establishVpn(VpnConfig config) { 4054 throwIfLockdownEnabled(); 4055 int user = UserHandle.getUserId(Binder.getCallingUid()); 4056 synchronized(mVpns) { 4057 return mVpns.get(user).establish(config); 4058 } 4059 } 4060 4061 /** 4062 * Start legacy VPN, controlling native daemons as needed. Creates a 4063 * secondary thread to perform connection work, returning quickly. 4064 */ 4065 @Override 4066 public void startLegacyVpn(VpnProfile profile) { 4067 throwIfLockdownEnabled(); 4068 final LinkProperties egress = getActiveLinkProperties(); 4069 if (egress == null) { 4070 throw new IllegalStateException("Missing active network connection"); 4071 } 4072 int user = UserHandle.getUserId(Binder.getCallingUid()); 4073 synchronized(mVpns) { 4074 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 4075 } 4076 } 4077 4078 /** 4079 * Return the information of the ongoing legacy VPN. This method is used 4080 * by VpnSettings and not available in ConnectivityManager. Permissions 4081 * are checked in Vpn class. 4082 * @hide 4083 */ 4084 @Override 4085 public LegacyVpnInfo getLegacyVpnInfo() { 4086 throwIfLockdownEnabled(); 4087 int user = UserHandle.getUserId(Binder.getCallingUid()); 4088 synchronized(mVpns) { 4089 return mVpns.get(user).getLegacyVpnInfo(); 4090 } 4091 } 4092 4093 /** 4094 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 4095 * not available in ConnectivityManager. 4096 * Permissions are checked in Vpn class. 4097 * @hide 4098 */ 4099 @Override 4100 public VpnConfig getVpnConfig() { 4101 int user = UserHandle.getUserId(Binder.getCallingUid()); 4102 synchronized(mVpns) { 4103 return mVpns.get(user).getVpnConfig(); 4104 } 4105 } 4106 4107 /** 4108 * Callback for VPN subsystem. Currently VPN is not adapted to the service 4109 * through NetworkStateTracker since it works differently. For example, it 4110 * needs to override DNS servers but never takes the default routes. It 4111 * relies on another data network, and it could keep existing connections 4112 * alive after reconnecting, switching between networks, or even resuming 4113 * from deep sleep. Calls from applications should be done synchronously 4114 * to avoid race conditions. As these are all hidden APIs, refactoring can 4115 * be done whenever a better abstraction is developed. 4116 */ 4117 public class VpnCallback { 4118 private VpnCallback() { 4119 } 4120 4121 public void onStateChanged(NetworkInfo info) { 4122 mHandler.obtainMessage(EVENT_VPN_STATE_CHANGED, info).sendToTarget(); 4123 } 4124 4125 public void override(String iface, List<String> dnsServers, List<String> searchDomains) { 4126 if (dnsServers == null) { 4127 restore(); 4128 return; 4129 } 4130 4131 // Convert DNS servers into addresses. 4132 List<InetAddress> addresses = new ArrayList<InetAddress>(); 4133 for (String address : dnsServers) { 4134 // Double check the addresses and remove invalid ones. 4135 try { 4136 addresses.add(InetAddress.parseNumericAddress(address)); 4137 } catch (Exception e) { 4138 // ignore 4139 } 4140 } 4141 if (addresses.isEmpty()) { 4142 restore(); 4143 return; 4144 } 4145 4146 // Concatenate search domains into a string. 4147 StringBuilder buffer = new StringBuilder(); 4148 if (searchDomains != null) { 4149 for (String domain : searchDomains) { 4150 buffer.append(domain).append(' '); 4151 } 4152 } 4153 String domains = buffer.toString().trim(); 4154 4155 // Apply DNS changes. 4156 synchronized (mDnsLock) { 4157 // TODO: Re-enable this when the netId of the VPN is known. 4158 // updateDnsLocked("VPN", netId, addresses, domains); 4159 } 4160 4161 // Temporarily disable the default proxy (not global). 4162 synchronized (mProxyLock) { 4163 mDefaultProxyDisabled = true; 4164 if (mGlobalProxy == null && mDefaultProxy != null) { 4165 sendProxyBroadcast(null); 4166 } 4167 } 4168 4169 // TODO: support proxy per network. 4170 } 4171 4172 public void restore() { 4173 synchronized (mProxyLock) { 4174 mDefaultProxyDisabled = false; 4175 if (mGlobalProxy == null && mDefaultProxy != null) { 4176 sendProxyBroadcast(mDefaultProxy); 4177 } 4178 } 4179 } 4180 4181 public void protect(ParcelFileDescriptor socket) { 4182 try { 4183 final int mark = mNetd.getMarkForProtect(); 4184 NetworkUtils.markSocket(socket.getFd(), mark); 4185 } catch (RemoteException e) { 4186 } 4187 } 4188 4189 public void setRoutes(String interfaze, List<RouteInfo> routes) { 4190 for (RouteInfo route : routes) { 4191 try { 4192 mNetd.setMarkedForwardingRoute(interfaze, route); 4193 } catch (RemoteException e) { 4194 } 4195 } 4196 } 4197 4198 public void setMarkedForwarding(String interfaze) { 4199 try { 4200 mNetd.setMarkedForwarding(interfaze); 4201 } catch (RemoteException e) { 4202 } 4203 } 4204 4205 public void clearMarkedForwarding(String interfaze) { 4206 try { 4207 mNetd.clearMarkedForwarding(interfaze); 4208 } catch (RemoteException e) { 4209 } 4210 } 4211 4212 public void addUserForwarding(String interfaze, int uid, boolean forwardDns) { 4213 int uidStart = uid * UserHandle.PER_USER_RANGE; 4214 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 4215 addUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 4216 } 4217 4218 public void clearUserForwarding(String interfaze, int uid, boolean forwardDns) { 4219 int uidStart = uid * UserHandle.PER_USER_RANGE; 4220 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 4221 clearUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 4222 } 4223 4224 public void addUidForwarding(String interfaze, int uidStart, int uidEnd, 4225 boolean forwardDns) { 4226 // TODO: Re-enable this when the netId of the VPN is known. 4227 // try { 4228 // mNetd.setUidRangeRoute(netId, uidStart, uidEnd, forwardDns); 4229 // } catch (RemoteException e) { 4230 // } 4231 4232 } 4233 4234 public void clearUidForwarding(String interfaze, int uidStart, int uidEnd, 4235 boolean forwardDns) { 4236 // TODO: Re-enable this when the netId of the VPN is known. 4237 // try { 4238 // mNetd.clearUidRangeRoute(interfaze, uidStart, uidEnd); 4239 // } catch (RemoteException e) { 4240 // } 4241 4242 } 4243 } 4244 4245 @Override 4246 public boolean updateLockdownVpn() { 4247 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 4248 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 4249 return false; 4250 } 4251 4252 // Tear down existing lockdown if profile was removed 4253 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 4254 if (mLockdownEnabled) { 4255 if (!mKeyStore.isUnlocked()) { 4256 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 4257 return false; 4258 } 4259 4260 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 4261 final VpnProfile profile = VpnProfile.decode( 4262 profileName, mKeyStore.get(Credentials.VPN + profileName)); 4263 int user = UserHandle.getUserId(Binder.getCallingUid()); 4264 synchronized(mVpns) { 4265 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 4266 profile)); 4267 } 4268 } else { 4269 setLockdownTracker(null); 4270 } 4271 4272 return true; 4273 } 4274 4275 /** 4276 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 4277 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 4278 */ 4279 private void setLockdownTracker(LockdownVpnTracker tracker) { 4280 // Shutdown any existing tracker 4281 final LockdownVpnTracker existing = mLockdownTracker; 4282 mLockdownTracker = null; 4283 if (existing != null) { 4284 existing.shutdown(); 4285 } 4286 4287 try { 4288 if (tracker != null) { 4289 mNetd.setFirewallEnabled(true); 4290 mNetd.setFirewallInterfaceRule("lo", true); 4291 mLockdownTracker = tracker; 4292 mLockdownTracker.init(); 4293 } else { 4294 mNetd.setFirewallEnabled(false); 4295 } 4296 } catch (RemoteException e) { 4297 // ignored; NMS lives inside system_server 4298 } 4299 } 4300 4301 private void throwIfLockdownEnabled() { 4302 if (mLockdownEnabled) { 4303 throw new IllegalStateException("Unavailable in lockdown mode"); 4304 } 4305 } 4306 4307 public void supplyMessenger(int networkType, Messenger messenger) { 4308 enforceConnectivityInternalPermission(); 4309 4310 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 4311 mNetTrackers[networkType].supplyMessenger(messenger); 4312 } 4313 } 4314 4315 public int findConnectionTypeForIface(String iface) { 4316 enforceConnectivityInternalPermission(); 4317 4318 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 4319 for (NetworkStateTracker tracker : mNetTrackers) { 4320 if (tracker != null) { 4321 LinkProperties lp = tracker.getLinkProperties(); 4322 if (lp != null && iface.equals(lp.getInterfaceName())) { 4323 return tracker.getNetworkInfo().getType(); 4324 } 4325 } 4326 } 4327 return ConnectivityManager.TYPE_NONE; 4328 } 4329 4330 /** 4331 * Have mobile data fail fast if enabled. 4332 * 4333 * @param enabled DctConstants.ENABLED/DISABLED 4334 */ 4335 private void setEnableFailFastMobileData(int enabled) { 4336 int tag; 4337 4338 if (enabled == DctConstants.ENABLED) { 4339 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 4340 } else { 4341 tag = mEnableFailFastMobileDataTag.get(); 4342 } 4343 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 4344 enabled)); 4345 } 4346 4347 private boolean isMobileDataStateTrackerReady() { 4348 MobileDataStateTracker mdst = 4349 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4350 return (mdst != null) && (mdst.isReady()); 4351 } 4352 4353 /** 4354 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 4355 */ 4356 4357 /** 4358 * No connection was possible to the network. 4359 * This is NOT a warm sim. 4360 */ 4361 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 4362 4363 /** 4364 * A connection was made to the internet, all is well. 4365 * This is NOT a warm sim. 4366 */ 4367 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 4368 4369 /** 4370 * A connection was made but no dns server was available to resolve a name to address. 4371 * This is NOT a warm sim since provisioning network is supported. 4372 */ 4373 private static final int CMP_RESULT_CODE_NO_DNS = 2; 4374 4375 /** 4376 * A connection was made but could not open a TCP connection. 4377 * This is NOT a warm sim since provisioning network is supported. 4378 */ 4379 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 4380 4381 /** 4382 * A connection was made but there was a redirection, we appear to be in walled garden. 4383 * This is an indication of a warm sim on a mobile network such as T-Mobile. 4384 */ 4385 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 4386 4387 /** 4388 * The mobile network is a provisioning network. 4389 * This is an indication of a warm sim on a mobile network such as AT&T. 4390 */ 4391 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 4392 4393 /** 4394 * The mobile network is provisioning 4395 */ 4396 private static final int CMP_RESULT_CODE_IS_PROVISIONING = 6; 4397 4398 private AtomicBoolean mIsProvisioningNetwork = new AtomicBoolean(false); 4399 private AtomicBoolean mIsStartingProvisioning = new AtomicBoolean(false); 4400 4401 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 4402 4403 @Override 4404 public int checkMobileProvisioning(int suggestedTimeOutMs) { 4405 int timeOutMs = -1; 4406 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 4407 enforceConnectivityInternalPermission(); 4408 4409 final long token = Binder.clearCallingIdentity(); 4410 try { 4411 timeOutMs = suggestedTimeOutMs; 4412 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 4413 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 4414 } 4415 4416 // Check that mobile networks are supported 4417 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 4418 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 4419 if (DBG) log("checkMobileProvisioning: X no mobile network"); 4420 return timeOutMs; 4421 } 4422 4423 // If we're already checking don't do it again 4424 // TODO: Add a queue of results... 4425 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 4426 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 4427 return timeOutMs; 4428 } 4429 4430 // Start off with mobile notification off 4431 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4432 4433 CheckMp checkMp = new CheckMp(mContext, this); 4434 CheckMp.CallBack cb = new CheckMp.CallBack() { 4435 @Override 4436 void onComplete(Integer result) { 4437 if (DBG) log("CheckMp.onComplete: result=" + result); 4438 NetworkInfo ni = 4439 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 4440 switch(result) { 4441 case CMP_RESULT_CODE_CONNECTABLE: 4442 case CMP_RESULT_CODE_NO_CONNECTION: 4443 case CMP_RESULT_CODE_NO_DNS: 4444 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 4445 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 4446 break; 4447 } 4448 case CMP_RESULT_CODE_REDIRECTED: { 4449 if (DBG) log("CheckMp.onComplete: warm sim"); 4450 String url = getMobileProvisioningUrl(); 4451 if (TextUtils.isEmpty(url)) { 4452 url = getMobileRedirectedProvisioningUrl(); 4453 } 4454 if (TextUtils.isEmpty(url) == false) { 4455 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 4456 setProvNotificationVisible(true, 4457 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4458 url); 4459 } else { 4460 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 4461 } 4462 break; 4463 } 4464 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 4465 String url = getMobileProvisioningUrl(); 4466 if (TextUtils.isEmpty(url) == false) { 4467 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 4468 setProvNotificationVisible(true, 4469 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4470 url); 4471 // Mark that we've got a provisioning network and 4472 // Disable Mobile Data until user actually starts provisioning. 4473 mIsProvisioningNetwork.set(true); 4474 MobileDataStateTracker mdst = (MobileDataStateTracker) 4475 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4476 4477 // Disable radio until user starts provisioning 4478 mdst.setRadio(false); 4479 } else { 4480 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 4481 } 4482 break; 4483 } 4484 case CMP_RESULT_CODE_IS_PROVISIONING: { 4485 // FIXME: Need to know when provisioning is done. Probably we can 4486 // check the completion status if successful we're done if we 4487 // "timedout" or still connected to provisioning APN turn off data? 4488 if (DBG) log("CheckMp.onComplete: provisioning started"); 4489 mIsStartingProvisioning.set(false); 4490 break; 4491 } 4492 default: { 4493 loge("CheckMp.onComplete: ignore unexpected result=" + result); 4494 break; 4495 } 4496 } 4497 mIsCheckingMobileProvisioning.set(false); 4498 } 4499 }; 4500 CheckMp.Params params = 4501 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 4502 if (DBG) log("checkMobileProvisioning: params=" + params); 4503 // TODO: Reenable when calls to the now defunct 4504 // MobileDataStateTracker.isProvisioningNetwork() are removed. 4505 // This code should be moved to the Telephony code. 4506 // checkMp.execute(params); 4507 } finally { 4508 Binder.restoreCallingIdentity(token); 4509 if (DBG) log("checkMobileProvisioning: X"); 4510 } 4511 return timeOutMs; 4512 } 4513 4514 static class CheckMp extends 4515 AsyncTask<CheckMp.Params, Void, Integer> { 4516 private static final String CHECKMP_TAG = "CheckMp"; 4517 4518 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 4519 private static boolean mTestingFailures; 4520 4521 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 4522 private static final int MAX_LOOPS = 4; 4523 4524 // Number of milli-seconds to complete all of the retires 4525 public static final int MAX_TIMEOUT_MS = 60000; 4526 4527 // The socket should retry only 5 seconds, the default is longer 4528 private static final int SOCKET_TIMEOUT_MS = 5000; 4529 4530 // Sleep time for network errors 4531 private static final int NET_ERROR_SLEEP_SEC = 3; 4532 4533 // Sleep time for network route establishment 4534 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 4535 4536 // Short sleep time for polling :( 4537 private static final int POLLING_SLEEP_SEC = 1; 4538 4539 private Context mContext; 4540 private ConnectivityService mCs; 4541 private TelephonyManager mTm; 4542 private Params mParams; 4543 4544 /** 4545 * Parameters for AsyncTask.execute 4546 */ 4547 static class Params { 4548 private String mUrl; 4549 private long mTimeOutMs; 4550 private CallBack mCb; 4551 4552 Params(String url, long timeOutMs, CallBack cb) { 4553 mUrl = url; 4554 mTimeOutMs = timeOutMs; 4555 mCb = cb; 4556 } 4557 4558 @Override 4559 public String toString() { 4560 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 4561 } 4562 } 4563 4564 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 4565 // issued by name or ip address, for Google its by name so when we construct 4566 // this HostnameVerifier we'll pass the original Uri and use it to verify 4567 // the host. If the host name in the original uril fails we'll test the 4568 // hostname parameter just incase things change. 4569 static class CheckMpHostnameVerifier implements HostnameVerifier { 4570 Uri mOrgUri; 4571 4572 CheckMpHostnameVerifier(Uri orgUri) { 4573 mOrgUri = orgUri; 4574 } 4575 4576 @Override 4577 public boolean verify(String hostname, SSLSession session) { 4578 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 4579 String orgUriHost = mOrgUri.getHost(); 4580 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 4581 if (DBG) { 4582 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 4583 + " orgUriHost=" + orgUriHost); 4584 } 4585 return retVal; 4586 } 4587 } 4588 4589 /** 4590 * The call back object passed in Params. onComplete will be called 4591 * on the main thread. 4592 */ 4593 abstract static class CallBack { 4594 // Called on the main thread. 4595 abstract void onComplete(Integer result); 4596 } 4597 4598 public CheckMp(Context context, ConnectivityService cs) { 4599 if (Build.IS_DEBUGGABLE) { 4600 mTestingFailures = 4601 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 4602 } else { 4603 mTestingFailures = false; 4604 } 4605 4606 mContext = context; 4607 mCs = cs; 4608 4609 // Setup access to TelephonyService we'll be using. 4610 mTm = (TelephonyManager) mContext.getSystemService( 4611 Context.TELEPHONY_SERVICE); 4612 } 4613 4614 /** 4615 * Get the default url to use for the test. 4616 */ 4617 public String getDefaultUrl() { 4618 // See http://go/clientsdns for usage approval 4619 String server = Settings.Global.getString(mContext.getContentResolver(), 4620 Settings.Global.CAPTIVE_PORTAL_SERVER); 4621 if (server == null) { 4622 server = "clients3.google.com"; 4623 } 4624 return "http://" + server + "/generate_204"; 4625 } 4626 4627 /** 4628 * Detect if its possible to connect to the http url. DNS based detection techniques 4629 * do not work at all hotspots. The best way to check is to perform a request to 4630 * a known address that fetches the data we expect. 4631 */ 4632 private synchronized Integer isMobileOk(Params params) { 4633 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 4634 Uri orgUri = Uri.parse(params.mUrl); 4635 Random rand = new Random(); 4636 mParams = params; 4637 4638 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 4639 result = CMP_RESULT_CODE_NO_CONNECTION; 4640 log("isMobileOk: X not mobile capable result=" + result); 4641 return result; 4642 } 4643 4644 if (mCs.mIsStartingProvisioning.get()) { 4645 result = CMP_RESULT_CODE_IS_PROVISIONING; 4646 log("isMobileOk: X is provisioning result=" + result); 4647 return result; 4648 } 4649 4650 // See if we've already determined we've got a provisioning connection, 4651 // if so we don't need to do anything active. 4652 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 4653 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4654 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 4655 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 4656 4657 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 4658 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4659 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 4660 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 4661 4662 if (isDefaultProvisioning || isHipriProvisioning) { 4663 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4664 log("isMobileOk: X default || hipri is provisioning result=" + result); 4665 return result; 4666 } 4667 4668 try { 4669 // Continue trying to connect until time has run out 4670 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 4671 4672 if (!mCs.isMobileDataStateTrackerReady()) { 4673 // Wait for MobileDataStateTracker to be ready. 4674 if (DBG) log("isMobileOk: mdst is not ready"); 4675 while(SystemClock.elapsedRealtime() < endTime) { 4676 if (mCs.isMobileDataStateTrackerReady()) { 4677 // Enable fail fast as we'll do retries here and use a 4678 // hipri connection so the default connection stays active. 4679 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 4680 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 4681 break; 4682 } 4683 sleep(POLLING_SLEEP_SEC); 4684 } 4685 } 4686 4687 log("isMobileOk: start hipri url=" + params.mUrl); 4688 4689 // First wait until we can start using hipri 4690 Binder binder = new Binder(); 4691 while(SystemClock.elapsedRealtime() < endTime) { 4692 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4693 Phone.FEATURE_ENABLE_HIPRI, binder); 4694 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 4695 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 4696 log("isMobileOk: hipri started"); 4697 break; 4698 } 4699 if (VDBG) log("isMobileOk: hipri not started yet"); 4700 result = CMP_RESULT_CODE_NO_CONNECTION; 4701 sleep(POLLING_SLEEP_SEC); 4702 } 4703 4704 // Continue trying to connect until time has run out 4705 while(SystemClock.elapsedRealtime() < endTime) { 4706 try { 4707 // Wait for hipri to connect. 4708 // TODO: Don't poll and handle situation where hipri fails 4709 // because default is retrying. See b/9569540 4710 NetworkInfo.State state = mCs 4711 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4712 if (state != NetworkInfo.State.CONNECTED) { 4713 if (true/*VDBG*/) { 4714 log("isMobileOk: not connected ni=" + 4715 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4716 } 4717 sleep(POLLING_SLEEP_SEC); 4718 result = CMP_RESULT_CODE_NO_CONNECTION; 4719 continue; 4720 } 4721 4722 // Hipri has started check if this is a provisioning url 4723 MobileDataStateTracker mdst = (MobileDataStateTracker) 4724 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4725 if (mdst.isProvisioningNetwork()) { 4726 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4727 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 4728 return result; 4729 } else { 4730 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 4731 } 4732 4733 // Get of the addresses associated with the url host. We need to use the 4734 // address otherwise HttpURLConnection object will use the name to get 4735 // the addresses and will try every address but that will bypass the 4736 // route to host we setup and the connection could succeed as the default 4737 // interface might be connected to the internet via wifi or other interface. 4738 InetAddress[] addresses; 4739 try { 4740 addresses = InetAddress.getAllByName(orgUri.getHost()); 4741 } catch (UnknownHostException e) { 4742 result = CMP_RESULT_CODE_NO_DNS; 4743 log("isMobileOk: X UnknownHostException result=" + result); 4744 return result; 4745 } 4746 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 4747 4748 // Get the type of addresses supported by this link 4749 LinkProperties lp = mCs.getLinkPropertiesForTypeInternal( 4750 ConnectivityManager.TYPE_MOBILE_HIPRI); 4751 boolean linkHasIpv4 = lp.hasIPv4Address(); 4752 boolean linkHasIpv6 = lp.hasGlobalIPv6Address(); 4753 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 4754 + " linkHasIpv6=" + linkHasIpv6); 4755 4756 final ArrayList<InetAddress> validAddresses = 4757 new ArrayList<InetAddress>(addresses.length); 4758 4759 for (InetAddress addr : addresses) { 4760 if (((addr instanceof Inet4Address) && linkHasIpv4) || 4761 ((addr instanceof Inet6Address) && linkHasIpv6)) { 4762 validAddresses.add(addr); 4763 } 4764 } 4765 4766 if (validAddresses.size() == 0) { 4767 return CMP_RESULT_CODE_NO_CONNECTION; 4768 } 4769 4770 int addrTried = 0; 4771 while (true) { 4772 // Loop through at most MAX_LOOPS valid addresses or until 4773 // we run out of time 4774 if (addrTried++ >= MAX_LOOPS) { 4775 log("isMobileOk: too many loops tried - giving up"); 4776 break; 4777 } 4778 if (SystemClock.elapsedRealtime() >= endTime) { 4779 log("isMobileOk: spend too much time - giving up"); 4780 break; 4781 } 4782 4783 InetAddress hostAddr = validAddresses.get(rand.nextInt( 4784 validAddresses.size())); 4785 4786 // Make a route to host so we check the specific interface. 4787 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 4788 hostAddr.getAddress(), null)) { 4789 // Wait a short time to be sure the route is established ?? 4790 log("isMobileOk:" 4791 + " wait to establish route to hostAddr=" + hostAddr); 4792 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 4793 } else { 4794 log("isMobileOk:" 4795 + " could not establish route to hostAddr=" + hostAddr); 4796 // Wait a short time before the next attempt 4797 sleep(NET_ERROR_SLEEP_SEC); 4798 continue; 4799 } 4800 4801 // Rewrite the url to have numeric address to use the specific route 4802 // using http for half the attempts and https for the other half. 4803 // Doing https first and http second as on a redirected walled garden 4804 // such as t-mobile uses we get a SocketTimeoutException: "SSL 4805 // handshake timed out" which we declare as 4806 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 4807 // having http second we will be using logic used for some time. 4808 URL newUrl; 4809 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 4810 newUrl = new URL(scheme, hostAddr.getHostAddress(), 4811 orgUri.getPath()); 4812 log("isMobileOk: newUrl=" + newUrl); 4813 4814 HttpURLConnection urlConn = null; 4815 try { 4816 // Open the connection set the request headers and get the response 4817 urlConn = (HttpURLConnection)newUrl.openConnection( 4818 java.net.Proxy.NO_PROXY); 4819 if (scheme.equals("https")) { 4820 ((HttpsURLConnection)urlConn).setHostnameVerifier( 4821 new CheckMpHostnameVerifier(orgUri)); 4822 } 4823 urlConn.setInstanceFollowRedirects(false); 4824 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 4825 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 4826 urlConn.setUseCaches(false); 4827 urlConn.setAllowUserInteraction(false); 4828 // Set the "Connection" to "Close" as by default "Keep-Alive" 4829 // is used which is useless in this case. 4830 urlConn.setRequestProperty("Connection", "close"); 4831 int responseCode = urlConn.getResponseCode(); 4832 4833 // For debug display the headers 4834 Map<String, List<String>> headers = urlConn.getHeaderFields(); 4835 log("isMobileOk: headers=" + headers); 4836 4837 // Close the connection 4838 urlConn.disconnect(); 4839 urlConn = null; 4840 4841 if (mTestingFailures) { 4842 // Pretend no connection, this tests using http and https 4843 result = CMP_RESULT_CODE_NO_CONNECTION; 4844 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 4845 continue; 4846 } 4847 4848 if (responseCode == 204) { 4849 // Return 4850 result = CMP_RESULT_CODE_CONNECTABLE; 4851 log("isMobileOk: X got expected responseCode=" + responseCode 4852 + " result=" + result); 4853 return result; 4854 } else { 4855 // Retry to be sure this was redirected, we've gotten 4856 // occasions where a server returned 200 even though 4857 // the device didn't have a "warm" sim. 4858 log("isMobileOk: not expected responseCode=" + responseCode); 4859 // TODO - it would be nice in the single-address case to do 4860 // another DNS resolve here, but flushing the cache is a bit 4861 // heavy-handed. 4862 result = CMP_RESULT_CODE_REDIRECTED; 4863 } 4864 } catch (Exception e) { 4865 log("isMobileOk: HttpURLConnection Exception" + e); 4866 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 4867 if (urlConn != null) { 4868 urlConn.disconnect(); 4869 urlConn = null; 4870 } 4871 sleep(NET_ERROR_SLEEP_SEC); 4872 continue; 4873 } 4874 } 4875 log("isMobileOk: X loops|timed out result=" + result); 4876 return result; 4877 } catch (Exception e) { 4878 log("isMobileOk: Exception e=" + e); 4879 continue; 4880 } 4881 } 4882 log("isMobileOk: timed out"); 4883 } finally { 4884 log("isMobileOk: F stop hipri"); 4885 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 4886 mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4887 Phone.FEATURE_ENABLE_HIPRI); 4888 4889 // Wait for hipri to disconnect. 4890 long endTime = SystemClock.elapsedRealtime() + 5000; 4891 4892 while(SystemClock.elapsedRealtime() < endTime) { 4893 NetworkInfo.State state = mCs 4894 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4895 if (state != NetworkInfo.State.DISCONNECTED) { 4896 if (VDBG) { 4897 log("isMobileOk: connected ni=" + 4898 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4899 } 4900 sleep(POLLING_SLEEP_SEC); 4901 continue; 4902 } 4903 } 4904 4905 log("isMobileOk: X result=" + result); 4906 } 4907 return result; 4908 } 4909 4910 @Override 4911 protected Integer doInBackground(Params... params) { 4912 return isMobileOk(params[0]); 4913 } 4914 4915 @Override 4916 protected void onPostExecute(Integer result) { 4917 log("onPostExecute: result=" + result); 4918 if ((mParams != null) && (mParams.mCb != null)) { 4919 mParams.mCb.onComplete(result); 4920 } 4921 } 4922 4923 private String inetAddressesToString(InetAddress[] addresses) { 4924 StringBuffer sb = new StringBuffer(); 4925 boolean firstTime = true; 4926 for(InetAddress addr : addresses) { 4927 if (firstTime) { 4928 firstTime = false; 4929 } else { 4930 sb.append(","); 4931 } 4932 sb.append(addr); 4933 } 4934 return sb.toString(); 4935 } 4936 4937 private void printNetworkInfo() { 4938 boolean hasIccCard = mTm.hasIccCard(); 4939 int simState = mTm.getSimState(); 4940 log("hasIccCard=" + hasIccCard 4941 + " simState=" + simState); 4942 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 4943 if (ni != null) { 4944 log("ni.length=" + ni.length); 4945 for (NetworkInfo netInfo: ni) { 4946 log("netInfo=" + netInfo.toString()); 4947 } 4948 } else { 4949 log("no network info ni=null"); 4950 } 4951 } 4952 4953 /** 4954 * Sleep for a few seconds then return. 4955 * @param seconds 4956 */ 4957 private static void sleep(int seconds) { 4958 long stopTime = System.nanoTime() + (seconds * 1000000000); 4959 long sleepTime; 4960 while ((sleepTime = stopTime - System.nanoTime()) > 0) { 4961 try { 4962 Thread.sleep(sleepTime / 1000000); 4963 } catch (InterruptedException ignored) { 4964 } 4965 } 4966 } 4967 4968 private static void log(String s) { 4969 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 4970 } 4971 } 4972 4973 // TODO: Move to ConnectivityManager and make public? 4974 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 4975 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 4976 4977 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 4978 @Override 4979 public void onReceive(Context context, Intent intent) { 4980 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 4981 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 4982 } 4983 } 4984 }; 4985 4986 private void handleMobileProvisioningAction(String url) { 4987 // Mark notification as not visible 4988 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4989 4990 // Check airplane mode 4991 boolean isAirplaneModeOn = Settings.System.getInt(mContext.getContentResolver(), 4992 Settings.Global.AIRPLANE_MODE_ON, 0) == 1; 4993 // If provisioning network and not in airplane mode handle as a special case, 4994 // otherwise launch browser with the intent directly. 4995 if (mIsProvisioningNetwork.get() && !isAirplaneModeOn) { 4996 if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch"); 4997 mIsProvisioningNetwork.set(false); 4998// mIsStartingProvisioning.set(true); 4999// MobileDataStateTracker mdst = (MobileDataStateTracker) 5000// mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 5001 // Radio was disabled on CMP_RESULT_CODE_PROVISIONING_NETWORK, enable it here 5002// mdst.setRadio(true); 5003// mdst.setEnableFailFastMobileData(DctConstants.ENABLED); 5004// mdst.enableMobileProvisioning(url); 5005 } else { 5006 if (DBG) log("handleMobileProvisioningAction: not prov network"); 5007 mIsProvisioningNetwork.set(false); 5008 // Check for apps that can handle provisioning first 5009 Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP); 5010 provisioningIntent.addCategory(TelephonyIntents.CATEGORY_MCCMNC_PREFIX 5011 + mTelephonyManager.getSimOperator()); 5012 if (mContext.getPackageManager().resolveActivity(provisioningIntent, 0 /* flags */) 5013 != null) { 5014 provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 5015 Intent.FLAG_ACTIVITY_NEW_TASK); 5016 mContext.startActivity(provisioningIntent); 5017 } else { 5018 // If no apps exist, use standard URL ACTION_VIEW method 5019 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 5020 Intent.CATEGORY_APP_BROWSER); 5021 newIntent.setData(Uri.parse(url)); 5022 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 5023 Intent.FLAG_ACTIVITY_NEW_TASK); 5024 try { 5025 mContext.startActivity(newIntent); 5026 } catch (ActivityNotFoundException e) { 5027 loge("handleMobileProvisioningAction: startActivity failed" + e); 5028 } 5029 } 5030 } 5031 } 5032 5033 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 5034 private volatile boolean mIsNotificationVisible = false; 5035 5036 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 5037 String url) { 5038 if (DBG) { 5039 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 5040 + " extraInfo=" + extraInfo + " url=" + url); 5041 } 5042 5043 Resources r = Resources.getSystem(); 5044 NotificationManager notificationManager = (NotificationManager) mContext 5045 .getSystemService(Context.NOTIFICATION_SERVICE); 5046 5047 if (visible) { 5048 CharSequence title; 5049 CharSequence details; 5050 int icon; 5051 Intent intent; 5052 Notification notification = new Notification(); 5053 switch (networkType) { 5054 case ConnectivityManager.TYPE_WIFI: 5055 title = r.getString(R.string.wifi_available_sign_in, 0); 5056 details = r.getString(R.string.network_available_sign_in_detailed, 5057 extraInfo); 5058 icon = R.drawable.stat_notify_wifi_in_range; 5059 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 5060 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 5061 Intent.FLAG_ACTIVITY_NEW_TASK); 5062 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 5063 break; 5064 case ConnectivityManager.TYPE_MOBILE: 5065 case ConnectivityManager.TYPE_MOBILE_HIPRI: 5066 title = r.getString(R.string.network_available_sign_in, 0); 5067 // TODO: Change this to pull from NetworkInfo once a printable 5068 // name has been added to it 5069 details = mTelephonyManager.getNetworkOperatorName(); 5070 icon = R.drawable.stat_notify_rssi_in_range; 5071 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 5072 intent.putExtra("EXTRA_URL", url); 5073 intent.setFlags(0); 5074 notification.contentIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 5075 break; 5076 default: 5077 title = r.getString(R.string.network_available_sign_in, 0); 5078 details = r.getString(R.string.network_available_sign_in_detailed, 5079 extraInfo); 5080 icon = R.drawable.stat_notify_rssi_in_range; 5081 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 5082 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 5083 Intent.FLAG_ACTIVITY_NEW_TASK); 5084 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 5085 break; 5086 } 5087 5088 notification.when = 0; 5089 notification.icon = icon; 5090 notification.flags = Notification.FLAG_AUTO_CANCEL; 5091 notification.tickerText = title; 5092 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 5093 5094 try { 5095 notificationManager.notify(NOTIFICATION_ID, networkType, notification); 5096 } catch (NullPointerException npe) { 5097 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 5098 npe.printStackTrace(); 5099 } 5100 } else { 5101 try { 5102 notificationManager.cancel(NOTIFICATION_ID, networkType); 5103 } catch (NullPointerException npe) { 5104 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 5105 npe.printStackTrace(); 5106 } 5107 } 5108 mIsNotificationVisible = visible; 5109 } 5110 5111 /** Location to an updatable file listing carrier provisioning urls. 5112 * An example: 5113 * 5114 * <?xml version="1.0" encoding="utf-8"?> 5115 * <provisioningUrls> 5116 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 5117 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 5118 * </provisioningUrls> 5119 */ 5120 private static final String PROVISIONING_URL_PATH = 5121 "/data/misc/radio/provisioning_urls.xml"; 5122 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 5123 5124 /** XML tag for root element. */ 5125 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 5126 /** XML tag for individual url */ 5127 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 5128 /** XML tag for redirected url */ 5129 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 5130 /** XML attribute for mcc */ 5131 private static final String ATTR_MCC = "mcc"; 5132 /** XML attribute for mnc */ 5133 private static final String ATTR_MNC = "mnc"; 5134 5135 private static final int REDIRECTED_PROVISIONING = 1; 5136 private static final int PROVISIONING = 2; 5137 5138 private String getProvisioningUrlBaseFromFile(int type) { 5139 FileReader fileReader = null; 5140 XmlPullParser parser = null; 5141 Configuration config = mContext.getResources().getConfiguration(); 5142 String tagType; 5143 5144 switch (type) { 5145 case PROVISIONING: 5146 tagType = TAG_PROVISIONING_URL; 5147 break; 5148 case REDIRECTED_PROVISIONING: 5149 tagType = TAG_REDIRECTED_URL; 5150 break; 5151 default: 5152 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 5153 type); 5154 } 5155 5156 try { 5157 fileReader = new FileReader(mProvisioningUrlFile); 5158 parser = Xml.newPullParser(); 5159 parser.setInput(fileReader); 5160 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 5161 5162 while (true) { 5163 XmlUtils.nextElement(parser); 5164 5165 String element = parser.getName(); 5166 if (element == null) break; 5167 5168 if (element.equals(tagType)) { 5169 String mcc = parser.getAttributeValue(null, ATTR_MCC); 5170 try { 5171 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 5172 String mnc = parser.getAttributeValue(null, ATTR_MNC); 5173 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 5174 parser.next(); 5175 if (parser.getEventType() == XmlPullParser.TEXT) { 5176 return parser.getText(); 5177 } 5178 } 5179 } 5180 } catch (NumberFormatException e) { 5181 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 5182 } 5183 } 5184 } 5185 return null; 5186 } catch (FileNotFoundException e) { 5187 loge("Carrier Provisioning Urls file not found"); 5188 } catch (XmlPullParserException e) { 5189 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 5190 } catch (IOException e) { 5191 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 5192 } finally { 5193 if (fileReader != null) { 5194 try { 5195 fileReader.close(); 5196 } catch (IOException e) {} 5197 } 5198 } 5199 return null; 5200 } 5201 5202 @Override 5203 public String getMobileRedirectedProvisioningUrl() { 5204 enforceConnectivityInternalPermission(); 5205 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 5206 if (TextUtils.isEmpty(url)) { 5207 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 5208 } 5209 return url; 5210 } 5211 5212 @Override 5213 public String getMobileProvisioningUrl() { 5214 enforceConnectivityInternalPermission(); 5215 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 5216 if (TextUtils.isEmpty(url)) { 5217 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 5218 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 5219 } else { 5220 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 5221 } 5222 // populate the iccid, imei and phone number in the provisioning url. 5223 if (!TextUtils.isEmpty(url)) { 5224 String phoneNumber = mTelephonyManager.getLine1Number(); 5225 if (TextUtils.isEmpty(phoneNumber)) { 5226 phoneNumber = "0000000000"; 5227 } 5228 url = String.format(url, 5229 mTelephonyManager.getSimSerialNumber() /* ICCID */, 5230 mTelephonyManager.getDeviceId() /* IMEI */, 5231 phoneNumber /* Phone numer */); 5232 } 5233 5234 return url; 5235 } 5236 5237 @Override 5238 public void setProvisioningNotificationVisible(boolean visible, int networkType, 5239 String extraInfo, String url) { 5240 enforceConnectivityInternalPermission(); 5241 setProvNotificationVisible(visible, networkType, extraInfo, url); 5242 } 5243 5244 @Override 5245 public void setAirplaneMode(boolean enable) { 5246 enforceConnectivityInternalPermission(); 5247 final long ident = Binder.clearCallingIdentity(); 5248 try { 5249 final ContentResolver cr = mContext.getContentResolver(); 5250 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 5251 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 5252 intent.putExtra("state", enable); 5253 mContext.sendBroadcast(intent); 5254 } finally { 5255 Binder.restoreCallingIdentity(ident); 5256 } 5257 } 5258 5259 private void onUserStart(int userId) { 5260 synchronized(mVpns) { 5261 Vpn userVpn = mVpns.get(userId); 5262 if (userVpn != null) { 5263 loge("Starting user already has a VPN"); 5264 return; 5265 } 5266 userVpn = new Vpn(mContext, mVpnCallback, mNetd, this, userId); 5267 mVpns.put(userId, userVpn); 5268 userVpn.startMonitoring(mContext, mTrackerHandler); 5269 } 5270 } 5271 5272 private void onUserStop(int userId) { 5273 synchronized(mVpns) { 5274 Vpn userVpn = mVpns.get(userId); 5275 if (userVpn == null) { 5276 loge("Stopping user has no VPN"); 5277 return; 5278 } 5279 mVpns.delete(userId); 5280 } 5281 } 5282 5283 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 5284 @Override 5285 public void onReceive(Context context, Intent intent) { 5286 final String action = intent.getAction(); 5287 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 5288 if (userId == UserHandle.USER_NULL) return; 5289 5290 if (Intent.ACTION_USER_STARTING.equals(action)) { 5291 onUserStart(userId); 5292 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 5293 onUserStop(userId); 5294 } 5295 } 5296 }; 5297 5298 @Override 5299 public LinkQualityInfo getLinkQualityInfo(int networkType) { 5300 enforceAccessPermission(); 5301 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 5302 return mNetTrackers[networkType].getLinkQualityInfo(); 5303 } else { 5304 return null; 5305 } 5306 } 5307 5308 @Override 5309 public LinkQualityInfo getActiveLinkQualityInfo() { 5310 enforceAccessPermission(); 5311 if (isNetworkTypeValid(mActiveDefaultNetwork) && 5312 mNetTrackers[mActiveDefaultNetwork] != null) { 5313 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 5314 } else { 5315 return null; 5316 } 5317 } 5318 5319 @Override 5320 public LinkQualityInfo[] getAllLinkQualityInfo() { 5321 enforceAccessPermission(); 5322 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 5323 for (NetworkStateTracker tracker : mNetTrackers) { 5324 if (tracker != null) { 5325 LinkQualityInfo li = tracker.getLinkQualityInfo(); 5326 if (li != null) { 5327 result.add(li); 5328 } 5329 } 5330 } 5331 5332 return result.toArray(new LinkQualityInfo[result.size()]); 5333 } 5334 5335 /* Infrastructure for network sampling */ 5336 5337 private void handleNetworkSamplingTimeout() { 5338 5339 log("Sampling interval elapsed, updating statistics .."); 5340 5341 // initialize list of interfaces .. 5342 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 5343 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 5344 for (NetworkStateTracker tracker : mNetTrackers) { 5345 if (tracker != null) { 5346 String ifaceName = tracker.getNetworkInterfaceName(); 5347 if (ifaceName != null) { 5348 mapIfaceToSample.put(ifaceName, null); 5349 } 5350 } 5351 } 5352 5353 // Read samples for all interfaces 5354 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 5355 5356 // process samples for all networks 5357 for (NetworkStateTracker tracker : mNetTrackers) { 5358 if (tracker != null) { 5359 String ifaceName = tracker.getNetworkInterfaceName(); 5360 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 5361 if (ss != null) { 5362 // end the previous sampling cycle 5363 tracker.stopSampling(ss); 5364 // start a new sampling cycle .. 5365 tracker.startSampling(ss); 5366 } 5367 } 5368 } 5369 5370 log("Done."); 5371 5372 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 5373 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 5374 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 5375 5376 if (DBG) log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 5377 5378 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 5379 } 5380 5381 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 5382 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 5383 mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, wakeupTime, intent); 5384 } 5385 5386 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 5387 new HashMap<Messenger, NetworkFactoryInfo>(); 5388 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 5389 new HashMap<NetworkRequest, NetworkRequestInfo>(); 5390 5391 private static class NetworkFactoryInfo { 5392 public final String name; 5393 public final Messenger messenger; 5394 public final AsyncChannel asyncChannel; 5395 5396 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 5397 this.name = name; 5398 this.messenger = messenger; 5399 this.asyncChannel = asyncChannel; 5400 } 5401 } 5402 5403 private class NetworkRequestInfo implements IBinder.DeathRecipient { 5404 static final boolean REQUEST = true; 5405 static final boolean LISTEN = false; 5406 5407 final NetworkRequest request; 5408 IBinder mBinder; 5409 final int mPid; 5410 final int mUid; 5411 final Messenger messenger; 5412 final boolean isRequest; 5413 5414 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 5415 super(); 5416 messenger = m; 5417 request = r; 5418 mBinder = binder; 5419 mPid = getCallingPid(); 5420 mUid = getCallingUid(); 5421 this.isRequest = isRequest; 5422 5423 try { 5424 mBinder.linkToDeath(this, 0); 5425 } catch (RemoteException e) { 5426 binderDied(); 5427 } 5428 } 5429 5430 void unlinkDeathRecipient() { 5431 mBinder.unlinkToDeath(this, 0); 5432 } 5433 5434 public void binderDied() { 5435 log("ConnectivityService NetworkRequestInfo binderDied(" + 5436 request + ", " + mBinder + ")"); 5437 releaseNetworkRequest(request); 5438 } 5439 5440 public String toString() { 5441 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 5442 mPid + " for " + request; 5443 } 5444 } 5445 5446 @Override 5447 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 5448 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 5449 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 5450 == false) { 5451 enforceConnectivityInternalPermission(); 5452 } else { 5453 enforceChangePermission(); 5454 } 5455 5456 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 5457 throw new IllegalArgumentException("Bad timeout specified"); 5458 } 5459 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 5460 networkCapabilities), legacyType, nextNetworkRequestId()); 5461 if (DBG) log("requestNetwork for " + networkRequest); 5462 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 5463 NetworkRequestInfo.REQUEST); 5464 5465 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 5466 if (timeoutMs > 0) { 5467 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 5468 nri), timeoutMs); 5469 } 5470 return networkRequest; 5471 } 5472 5473 @Override 5474 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 5475 PendingIntent operation) { 5476 // TODO 5477 return null; 5478 } 5479 5480 @Override 5481 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 5482 Messenger messenger, IBinder binder) { 5483 enforceAccessPermission(); 5484 5485 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 5486 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 5487 if (DBG) log("listenForNetwork for " + networkRequest); 5488 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 5489 NetworkRequestInfo.LISTEN); 5490 5491 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 5492 return networkRequest; 5493 } 5494 5495 @Override 5496 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 5497 PendingIntent operation) { 5498 } 5499 5500 @Override 5501 public void releaseNetworkRequest(NetworkRequest networkRequest) { 5502 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 5503 0, networkRequest)); 5504 } 5505 5506 @Override 5507 public void registerNetworkFactory(Messenger messenger, String name) { 5508 enforceConnectivityInternalPermission(); 5509 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 5510 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 5511 } 5512 5513 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 5514 if (VDBG) log("Got NetworkFactory Messenger for " + nfi.name); 5515 mNetworkFactoryInfos.put(nfi.messenger, nfi); 5516 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 5517 } 5518 5519 @Override 5520 public void unregisterNetworkFactory(Messenger messenger) { 5521 enforceConnectivityInternalPermission(); 5522 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 5523 } 5524 5525 private void handleUnregisterNetworkFactory(Messenger messenger) { 5526 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 5527 if (nfi == null) { 5528 if (VDBG) log("Failed to find Messenger in unregisterNetworkFactory"); 5529 return; 5530 } 5531 if (VDBG) log("unregisterNetworkFactory for " + nfi.name); 5532 } 5533 5534 /** 5535 * NetworkAgentInfo supporting a request by requestId. 5536 * These have already been vetted (their Capabilities satisfy the request) 5537 * and the are the highest scored network available. 5538 * the are keyed off the Requests requestId. 5539 */ 5540 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 5541 new SparseArray<NetworkAgentInfo>(); 5542 5543 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 5544 new SparseArray<NetworkAgentInfo>(); 5545 5546 // NetworkAgentInfo keyed off its connecting messenger 5547 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 5548 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 5549 new HashMap<Messenger, NetworkAgentInfo>(); 5550 5551 private final NetworkRequest mDefaultRequest; 5552 5553 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 5554 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 5555 int currentScore) { 5556 enforceConnectivityInternalPermission(); 5557 5558 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), nextNetId(), 5559 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 5560 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler); 5561 if (VDBG) log("registerNetworkAgent " + nai); 5562 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 5563 } 5564 5565 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 5566 if (VDBG) log("Got NetworkAgent Messenger"); 5567 mNetworkAgentInfos.put(na.messenger, na); 5568 mNetworkForNetId.put(na.network.netId, na); 5569 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 5570 NetworkInfo networkInfo = na.networkInfo; 5571 na.networkInfo = null; 5572 updateNetworkInfo(na, networkInfo); 5573 } 5574 5575 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 5576 LinkProperties newLp = networkAgent.linkProperties; 5577 int netId = networkAgent.network.netId; 5578 5579 updateInterfaces(newLp, oldLp, netId); 5580 updateMtu(newLp, oldLp); 5581 // TODO - figure out what to do for clat 5582// for (LinkProperties lp : newLp.getStackedLinks()) { 5583// updateMtu(lp, null); 5584// } 5585 updateRoutes(newLp, oldLp, netId); 5586 updateDnses(newLp, oldLp, netId); 5587 updateClat(newLp, oldLp, networkAgent); 5588 } 5589 5590 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo na) { 5591 // Update 464xlat state. 5592 if (mClat.requiresClat(na)) { 5593 5594 // If the connection was previously using clat, but is not using it now, stop the clat 5595 // daemon. Normally, this happens automatically when the connection disconnects, but if 5596 // the disconnect is not reported, or if the connection's LinkProperties changed for 5597 // some other reason (e.g., handoff changes the IP addresses on the link), it would 5598 // still be running. If it's not running, then stopping it is a no-op. 5599 if (Nat464Xlat.isRunningClat(oldLp) && !Nat464Xlat.isRunningClat(newLp)) { 5600 mClat.stopClat(); 5601 } 5602 // If the link requires clat to be running, then start the daemon now. 5603 if (na.networkInfo.isConnected()) { 5604 mClat.startClat(na); 5605 } else { 5606 mClat.stopClat(); 5607 } 5608 } 5609 } 5610 5611 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 5612 CompareResult<String> interfaceDiff = new CompareResult<String>(); 5613 if (oldLp != null) { 5614 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 5615 } else if (newLp != null) { 5616 interfaceDiff.added = newLp.getAllInterfaceNames(); 5617 } 5618 for (String iface : interfaceDiff.added) { 5619 try { 5620 mNetd.addInterfaceToNetwork(iface, netId); 5621 } catch (Exception e) { 5622 loge("Exception adding interface: " + e); 5623 } 5624 } 5625 for (String iface : interfaceDiff.removed) { 5626 try { 5627 mNetd.removeInterfaceFromNetwork(iface, netId); 5628 } catch (Exception e) { 5629 loge("Exception removing interface: " + e); 5630 } 5631 } 5632 } 5633 5634 private void updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 5635 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 5636 if (oldLp != null) { 5637 routeDiff = oldLp.compareAllRoutes(newLp); 5638 } else if (newLp != null) { 5639 routeDiff.added = newLp.getAllRoutes(); 5640 } 5641 5642 // add routes before removing old in case it helps with continuous connectivity 5643 5644 // do this twice, adding non-nexthop routes first, then routes they are dependent on 5645 for (RouteInfo route : routeDiff.added) { 5646 if (route.hasGateway()) continue; 5647 try { 5648 mNetd.addRoute(netId, route); 5649 } catch (Exception e) { 5650 loge("Exception in addRoute for non-gateway: " + e); 5651 } 5652 } 5653 for (RouteInfo route : routeDiff.added) { 5654 if (route.hasGateway() == false) continue; 5655 try { 5656 mNetd.addRoute(netId, route); 5657 } catch (Exception e) { 5658 loge("Exception in addRoute for gateway: " + e); 5659 } 5660 } 5661 5662 for (RouteInfo route : routeDiff.removed) { 5663 try { 5664 mNetd.removeRoute(netId, route); 5665 } catch (Exception e) { 5666 loge("Exception in removeRoute: " + e); 5667 } 5668 } 5669 } 5670 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId) { 5671 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 5672 Collection<InetAddress> dnses = newLp.getDnsServers(); 5673 if (dnses.size() == 0 && mDefaultDns != null) { 5674 dnses = new ArrayList(); 5675 dnses.add(mDefaultDns); 5676 if (DBG) { 5677 loge("no dns provided for netId " + netId + ", so using defaults"); 5678 } 5679 } 5680 try { 5681 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 5682 newLp.getDomains()); 5683 } catch (Exception e) { 5684 loge("Exception in setDnsServersForNetwork: " + e); 5685 } 5686 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 5687 if (defaultNai != null && defaultNai.network.netId == netId) { 5688 setDefaultDnsSystemProperties(dnses); 5689 } 5690 } 5691 } 5692 5693 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 5694 int last = 0; 5695 for (InetAddress dns : dnses) { 5696 ++last; 5697 String key = "net.dns" + last; 5698 String value = dns.getHostAddress(); 5699 SystemProperties.set(key, value); 5700 } 5701 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 5702 String key = "net.dns" + i; 5703 SystemProperties.set(key, ""); 5704 } 5705 mNumDnsEntries = last; 5706 } 5707 5708 5709 private void updateCapabilities(NetworkAgentInfo networkAgent, 5710 NetworkCapabilities networkCapabilities) { 5711 // TODO - what else here? Verify still satisfies everybody? 5712 // Check if satisfies somebody new? call callbacks? 5713 networkAgent.networkCapabilities = networkCapabilities; 5714 } 5715 5716 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 5717 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 5718 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 5719 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 5720 networkRequest); 5721 } 5722 } 5723 5724 private void callCallbackForRequest(NetworkRequestInfo nri, 5725 NetworkAgentInfo networkAgent, int notificationType) { 5726 if (nri.messenger == null) return; // Default request has no msgr 5727 Object o; 5728 int a1 = 0; 5729 int a2 = 0; 5730 switch (notificationType) { 5731 case ConnectivityManager.CALLBACK_LOSING: 5732 a1 = 30 * 1000; // TODO - read this from NetworkMonitor 5733 // fall through 5734 case ConnectivityManager.CALLBACK_PRECHECK: 5735 case ConnectivityManager.CALLBACK_AVAILABLE: 5736 case ConnectivityManager.CALLBACK_LOST: 5737 case ConnectivityManager.CALLBACK_CAP_CHANGED: 5738 case ConnectivityManager.CALLBACK_IP_CHANGED: { 5739 o = new NetworkRequest(nri.request); 5740 a2 = networkAgent.network.netId; 5741 break; 5742 } 5743 case ConnectivityManager.CALLBACK_UNAVAIL: 5744 case ConnectivityManager.CALLBACK_RELEASED: { 5745 o = new NetworkRequest(nri.request); 5746 break; 5747 } 5748 default: { 5749 loge("Unknown notificationType " + notificationType); 5750 return; 5751 } 5752 } 5753 Message msg = Message.obtain(); 5754 msg.arg1 = a1; 5755 msg.arg2 = a2; 5756 msg.obj = o; 5757 msg.what = notificationType; 5758 try { 5759 if (VDBG) log("sending notification " + notificationType + " for " + nri.request); 5760 nri.messenger.send(msg); 5761 } catch (RemoteException e) { 5762 // may occur naturally in the race of binder death. 5763 loge("RemoteException caught trying to send a callback msg for " + nri.request); 5764 } 5765 } 5766 5767 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 5768 if (oldNetwork == null) { 5769 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 5770 return; 5771 } 5772 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 5773 if (DBG) { 5774 if (oldNetwork.networkRequests.size() != 0) { 5775 loge("Dead network still had " + oldNetwork.networkRequests.size() + " requests"); 5776 } 5777 } 5778 oldNetwork.asyncChannel.disconnect(); 5779 } 5780 5781 private void handleConnectionValidated(NetworkAgentInfo newNetwork) { 5782 if (newNetwork == null) { 5783 loge("Unknown NetworkAgentInfo in handleConnectionValidated"); 5784 return; 5785 } 5786 boolean keep = false; 5787 boolean isNewDefault = false; 5788 if (DBG) log("handleConnectionValidated for "+newNetwork.name()); 5789 // check if any NetworkRequest wants this NetworkAgent 5790 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 5791 if (VDBG) log(" new Network has: " + newNetwork.networkCapabilities); 5792 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 5793 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 5794 if (newNetwork == currentNetwork) { 5795 if (VDBG) log("Network " + newNetwork.name() + " was already satisfying" + 5796 " request " + nri.request.requestId + ". No change."); 5797 keep = true; 5798 continue; 5799 } 5800 5801 // check if it satisfies the NetworkCapabilities 5802 if (VDBG) log(" checking if request is satisfied: " + nri.request); 5803 if (nri.request.networkCapabilities.satisfiedByNetworkCapabilities( 5804 newNetwork.networkCapabilities)) { 5805 // next check if it's better than any current network we're using for 5806 // this request 5807 if (VDBG) { 5808 log("currentScore = " + 5809 (currentNetwork != null ? currentNetwork.currentScore : 0) + 5810 ", newScore = " + newNetwork.currentScore); 5811 } 5812 if (currentNetwork == null || 5813 currentNetwork.currentScore < newNetwork.currentScore) { 5814 if (currentNetwork != null) { 5815 if (VDBG) log(" accepting network in place of " + currentNetwork.name()); 5816 currentNetwork.networkRequests.remove(nri.request.requestId); 5817 currentNetwork.networkLingered.add(nri.request); 5818 affectedNetworks.add(currentNetwork); 5819 } else { 5820 if (VDBG) log(" accepting network in place of null"); 5821 } 5822 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 5823 newNetwork.addRequest(nri.request); 5824 int legacyType = nri.request.legacyType; 5825 if (legacyType != TYPE_NONE) { 5826 mLegacyTypeTracker.add(legacyType, newNetwork); 5827 } 5828 keep = true; 5829 // TODO - this could get expensive if we have alot of requests for this 5830 // network. Think about if there is a way to reduce this. Push 5831 // netid->request mapping to each factory? 5832 sendUpdatedScoreToFactories(nri.request, newNetwork.currentScore); 5833 if (mDefaultRequest.requestId == nri.request.requestId) { 5834 isNewDefault = true; 5835 updateActiveDefaultNetwork(newNetwork); 5836 if (newNetwork.linkProperties != null) { 5837 setDefaultDnsSystemProperties( 5838 newNetwork.linkProperties.getDnsServers()); 5839 } else { 5840 setDefaultDnsSystemProperties(new ArrayList<InetAddress>()); 5841 } 5842 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 5843 } 5844 } 5845 } 5846 } 5847 for (NetworkAgentInfo nai : affectedNetworks) { 5848 boolean teardown = true; 5849 for (int i = 0; i < nai.networkRequests.size(); i++) { 5850 NetworkRequest nr = nai.networkRequests.valueAt(i); 5851 try { 5852 if (mNetworkRequests.get(nr).isRequest) { 5853 teardown = false; 5854 } 5855 } catch (Exception e) { 5856 loge("Request " + nr + " not found in mNetworkRequests."); 5857 loge(" it came from request list of " + nai.name()); 5858 } 5859 } 5860 if (teardown) { 5861 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 5862 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 5863 } else { 5864 // not going to linger, so kill the list of linger networks.. only 5865 // notify them of linger if it happens as the result of gaining another, 5866 // but if they transition and old network stays up, don't tell them of linger 5867 // or very delayed loss 5868 nai.networkLingered.clear(); 5869 if (VDBG) log("Lingered for " + nai.name() + " cleared"); 5870 } 5871 } 5872 if (keep) { 5873 if (isNewDefault) { 5874 if (VDBG) log("Switching to new default network: " + newNetwork); 5875 setupDataActivityTracking(newNetwork); 5876 try { 5877 mNetd.setDefaultNetId(newNetwork.network.netId); 5878 } catch (Exception e) { 5879 loge("Exception setting default network :" + e); 5880 } 5881 if (newNetwork.equals(mNetworkForRequestId.get(mDefaultRequest.requestId))) { 5882 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 5883 } 5884 synchronized (ConnectivityService.this) { 5885 // have a new default network, release the transition wakelock in 5886 // a second if it's held. The second pause is to allow apps 5887 // to reconnect over the new network 5888 if (mNetTransitionWakeLock.isHeld()) { 5889 mHandler.sendMessageDelayed(mHandler.obtainMessage( 5890 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 5891 mNetTransitionWakeLockSerialNumber, 0), 5892 1000); 5893 } 5894 } 5895 5896 // this will cause us to come up initially as unconnected and switching 5897 // to connected after our normal pause unless somebody reports us as 5898 // really disconnected 5899 mDefaultInetConditionPublished = 0; 5900 mDefaultConnectionSequence++; 5901 mInetConditionChangeInFlight = false; 5902 // TODO - read the tcp buffer size config string from somewhere 5903 // updateNetworkSettings(); 5904 } 5905 // notify battery stats service about this network 5906 try { 5907 BatteryStatsService.getService().noteNetworkInterfaceType( 5908 newNetwork.linkProperties.getInterfaceName(), 5909 newNetwork.networkInfo.getType()); 5910 } catch (RemoteException e) { } 5911 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 5912 } else { 5913 if (DBG && newNetwork.networkRequests.size() != 0) { 5914 loge("tearing down network with live requests:"); 5915 for (int i=0; i < newNetwork.networkRequests.size(); i++) { 5916 loge(" " + newNetwork.networkRequests.valueAt(i)); 5917 } 5918 } 5919 if (VDBG) log("Validated network turns out to be unwanted. Tear it down."); 5920 newNetwork.asyncChannel.disconnect(); 5921 } 5922 } 5923 5924 5925 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 5926 NetworkInfo.State state = newInfo.getState(); 5927 NetworkInfo oldInfo = networkAgent.networkInfo; 5928 networkAgent.networkInfo = newInfo; 5929 5930 if (oldInfo != null && oldInfo.getState() == state) { 5931 if (VDBG) log("ignoring duplicate network state non-change"); 5932 return; 5933 } 5934 if (DBG) { 5935 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 5936 (oldInfo == null ? "null" : oldInfo.getState()) + 5937 " to " + state); 5938 } 5939 5940 if (state == NetworkInfo.State.CONNECTED) { 5941 try { 5942 // This is likely caused by the fact that this network already 5943 // exists. An example is when a network goes from CONNECTED to 5944 // CONNECTING and back (like wifi on DHCP renew). 5945 // TODO: keep track of which networks we've created, or ask netd 5946 // to tell us whether we've already created this network or not. 5947 mNetd.createNetwork(networkAgent.network.netId); 5948 } catch (Exception e) { 5949 loge("Error creating network " + networkAgent.network.netId + ": " 5950 + e.getMessage()); 5951 return; 5952 } 5953 5954 updateLinkProperties(networkAgent, null); 5955 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 5956 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 5957 } else if (state == NetworkInfo.State.DISCONNECTED || 5958 state == NetworkInfo.State.SUSPENDED) { 5959 networkAgent.asyncChannel.disconnect(); 5960 } 5961 } 5962 5963 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 5964 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 5965 5966 nai.currentScore = score; 5967 5968 // TODO - This will not do the right thing if this network is lowering 5969 // its score and has requests that can be served by other 5970 // currently-active networks, or if the network is increasing its 5971 // score and other networks have requests that can be better served 5972 // by this network. 5973 // 5974 // Really we want to see if any of our requests migrate to other 5975 // active/lingered networks and if any other requests migrate to us (depending 5976 // on increasing/decreasing currentScore. That's a bit of work and probably our 5977 // score checking/network allocation code needs to be modularized so we can understand 5978 // (see handleConnectionValided for an example). 5979 // 5980 // As a first order approx, lets just advertise the new score to factories. If 5981 // somebody can beat it they will nominate a network and our normal net replacement 5982 // code will fire. 5983 for (int i = 0; i < nai.networkRequests.size(); i++) { 5984 NetworkRequest nr = nai.networkRequests.valueAt(i); 5985 sendUpdatedScoreToFactories(nr, score); 5986 } 5987 } 5988 5989 // notify only this one new request of the current state 5990 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 5991 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 5992 // TODO - read state from monitor to decide what to send. 5993// if (nai.networkMonitor.isLingering()) { 5994// notifyType = NetworkCallbacks.LOSING; 5995// } else if (nai.networkMonitor.isEvaluating()) { 5996// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 5997// } 5998 callCallbackForRequest(nri, nai, notifyType); 5999 } 6000 6001 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 6002 if (connected) { 6003 NetworkInfo info = new NetworkInfo(nai.networkInfo); 6004 info.setType(type); 6005 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 6006 } else { 6007 NetworkInfo info = new NetworkInfo(nai.networkInfo); 6008 info.setType(type); 6009 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 6010 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 6011 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 6012 if (info.isFailover()) { 6013 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 6014 nai.networkInfo.setFailover(false); 6015 } 6016 if (info.getReason() != null) { 6017 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 6018 } 6019 if (info.getExtraInfo() != null) { 6020 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 6021 } 6022 NetworkAgentInfo newDefaultAgent = null; 6023 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 6024 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 6025 if (newDefaultAgent != null) { 6026 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 6027 newDefaultAgent.networkInfo); 6028 } else { 6029 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 6030 } 6031 } 6032 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 6033 mDefaultInetConditionPublished); 6034 final Intent immediateIntent = new Intent(intent); 6035 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 6036 sendStickyBroadcast(immediateIntent); 6037 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 6038 if (newDefaultAgent != null) { 6039 sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo, 6040 getConnectivityChangeDelay()); 6041 } 6042 } 6043 } 6044 6045 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 6046 if (VDBG) log("notifyType " + notifyType + " for " + networkAgent.name()); 6047 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 6048 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 6049 NetworkRequestInfo nri = mNetworkRequests.get(nr); 6050 if (VDBG) log(" sending notification for " + nr); 6051 callCallbackForRequest(nri, networkAgent, notifyType); 6052 } 6053 } 6054 6055 private LinkProperties getLinkPropertiesForTypeInternal(int networkType) { 6056 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 6057 return (nai != null) ? 6058 new LinkProperties(nai.linkProperties) : 6059 new LinkProperties(); 6060 } 6061 6062 private NetworkInfo getNetworkInfoForType(int networkType) { 6063 if (!mLegacyTypeTracker.isTypeSupported(networkType)) 6064 return null; 6065 6066 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 6067 if (nai != null) { 6068 NetworkInfo result = new NetworkInfo(nai.networkInfo); 6069 result.setType(networkType); 6070 return result; 6071 } else { 6072 return new NetworkInfo(networkType, 0, "Unknown", ""); 6073 } 6074 } 6075 6076 private NetworkCapabilities getNetworkCapabilitiesForType(int networkType) { 6077 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 6078 return (nai != null) ? 6079 new NetworkCapabilities(nai.networkCapabilities) : 6080 new NetworkCapabilities(); 6081 } 6082} 6083