ConnectivityService.java revision 891dd5743af17e3376b0b0438b149c565cf871c8
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_CBS; 27import static android.net.ConnectivityManager.TYPE_MOBILE_DUN; 28import static android.net.ConnectivityManager.TYPE_MOBILE_FOTA; 29import static android.net.ConnectivityManager.TYPE_MOBILE_HIPRI; 30import static android.net.ConnectivityManager.TYPE_MOBILE_IA; 31import static android.net.ConnectivityManager.TYPE_MOBILE_IMS; 32import static android.net.ConnectivityManager.TYPE_MOBILE_MMS; 33import static android.net.ConnectivityManager.TYPE_MOBILE_SUPL; 34import static android.net.ConnectivityManager.TYPE_NONE; 35import static android.net.ConnectivityManager.TYPE_PROXY; 36import static android.net.ConnectivityManager.TYPE_VPN; 37import static android.net.ConnectivityManager.TYPE_WIFI; 38import static android.net.ConnectivityManager.TYPE_WIMAX; 39import static android.net.ConnectivityManager.getNetworkTypeName; 40import static android.net.ConnectivityManager.isNetworkTypeValid; 41import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 42import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 43 44import android.app.AlarmManager; 45import android.app.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.PackageManager; 56import android.content.res.Configuration; 57import android.content.res.Resources; 58import android.database.ContentObserver; 59import android.net.ConnectivityManager; 60import android.net.IConnectivityManager; 61import android.net.INetworkManagementEventObserver; 62import android.net.INetworkPolicyListener; 63import android.net.INetworkPolicyManager; 64import android.net.INetworkStatsService; 65import android.net.LinkAddress; 66import android.net.LinkProperties; 67import android.net.LinkProperties.CompareResult; 68import android.net.MobileDataStateTracker; 69import android.net.Network; 70import android.net.NetworkAgent; 71import android.net.NetworkCapabilities; 72import android.net.NetworkConfig; 73import android.net.NetworkInfo; 74import android.net.NetworkInfo.DetailedState; 75import android.net.NetworkFactory; 76import android.net.NetworkMisc; 77import android.net.NetworkQuotaInfo; 78import android.net.NetworkRequest; 79import android.net.NetworkState; 80import android.net.NetworkStateTracker; 81import android.net.NetworkUtils; 82import android.net.Proxy; 83import android.net.ProxyDataTracker; 84import android.net.ProxyInfo; 85import android.net.RouteInfo; 86import android.net.SamplingDataTracker; 87import android.net.UidRange; 88import android.net.Uri; 89import android.net.wimax.WimaxManagerConstants; 90import android.os.AsyncTask; 91import android.os.Binder; 92import android.os.Build; 93import android.os.Bundle; 94import android.os.FileUtils; 95import android.os.Handler; 96import android.os.HandlerThread; 97import android.os.IBinder; 98import android.os.INetworkManagementService; 99import android.os.Looper; 100import android.os.Message; 101import android.os.Messenger; 102import android.os.ParcelFileDescriptor; 103import android.os.PowerManager; 104import android.os.Process; 105import android.os.RemoteException; 106import android.os.ServiceManager; 107import android.os.SystemClock; 108import android.os.SystemProperties; 109import android.os.UserHandle; 110import android.os.UserManager; 111import android.provider.Settings; 112import android.security.Credentials; 113import android.security.KeyStore; 114import android.telephony.TelephonyManager; 115import android.text.TextUtils; 116import android.util.Slog; 117import android.util.SparseArray; 118import android.util.SparseIntArray; 119import android.util.Xml; 120 121import com.android.internal.R; 122import com.android.internal.annotations.GuardedBy; 123import com.android.internal.app.IBatteryStats; 124import com.android.internal.net.LegacyVpnInfo; 125import com.android.internal.net.NetworkStatsFactory; 126import com.android.internal.net.VpnConfig; 127import com.android.internal.net.VpnProfile; 128import com.android.internal.telephony.DctConstants; 129import com.android.internal.telephony.Phone; 130import com.android.internal.telephony.PhoneConstants; 131import com.android.internal.telephony.TelephonyIntents; 132import com.android.internal.util.AsyncChannel; 133import com.android.internal.util.IndentingPrintWriter; 134import com.android.internal.util.XmlUtils; 135import com.android.server.am.BatteryStatsService; 136import com.android.server.connectivity.DataConnectionStats; 137import com.android.server.connectivity.Nat464Xlat; 138import com.android.server.connectivity.NetworkAgentInfo; 139import com.android.server.connectivity.NetworkMonitor; 140import com.android.server.connectivity.PacManager; 141import com.android.server.connectivity.PermissionMonitor; 142import com.android.server.connectivity.Tethering; 143import com.android.server.connectivity.Vpn; 144import com.android.server.net.BaseNetworkObserver; 145import com.android.server.net.LockdownVpnTracker; 146import com.google.android.collect.Lists; 147import com.google.android.collect.Sets; 148 149import dalvik.system.DexClassLoader; 150 151import org.xmlpull.v1.XmlPullParser; 152import org.xmlpull.v1.XmlPullParserException; 153 154import java.io.File; 155import java.io.FileDescriptor; 156import java.io.FileNotFoundException; 157import java.io.FileReader; 158import java.io.IOException; 159import java.io.PrintWriter; 160import java.lang.reflect.Constructor; 161import java.net.HttpURLConnection; 162import java.net.Inet4Address; 163import java.net.Inet6Address; 164import java.net.InetAddress; 165import java.net.URL; 166import java.net.UnknownHostException; 167import java.util.ArrayList; 168import java.util.Arrays; 169import java.util.Collection; 170import java.util.GregorianCalendar; 171import java.util.HashMap; 172import java.util.HashSet; 173import java.util.Iterator; 174import java.util.List; 175import java.util.Map; 176import java.util.Objects; 177import java.util.Random; 178import java.util.concurrent.atomic.AtomicBoolean; 179import java.util.concurrent.atomic.AtomicInteger; 180 181import javax.net.ssl.HostnameVerifier; 182import javax.net.ssl.HttpsURLConnection; 183import javax.net.ssl.SSLSession; 184 185/** 186 * @hide 187 */ 188public class ConnectivityService extends IConnectivityManager.Stub 189 implements PendingIntent.OnFinished { 190 private static final String TAG = "ConnectivityService"; 191 192 private static final boolean DBG = true; 193 private static final boolean VDBG = false; 194 195 // network sampling debugging 196 private static final boolean SAMPLE_DBG = false; 197 198 private static final boolean LOGD_RULES = false; 199 200 // TODO: create better separation between radio types and network types 201 202 // how long to wait before switching back to a radio's default network 203 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 204 // system property that can override the above value 205 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 206 "android.telephony.apn-restore"; 207 208 // Default value if FAIL_FAST_TIME_MS is not set 209 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 210 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 211 private static final String FAIL_FAST_TIME_MS = 212 "persist.radio.fail_fast_time_ms"; 213 214 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 215 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 216 217 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 218 219 private PendingIntent mSampleIntervalElapsedIntent; 220 221 // Set network sampling interval at 12 minutes, this way, even if the timers get 222 // aggregated, it will fire at around 15 minutes, which should allow us to 223 // aggregate this timer with other timers (specially the socket keep alive timers) 224 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 12 * 60); 225 226 // start network sampling a minute after booting ... 227 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 60); 228 229 AlarmManager mAlarmManager; 230 231 private Tethering mTethering; 232 233 private final PermissionMonitor mPermissionMonitor; 234 235 private KeyStore mKeyStore; 236 237 @GuardedBy("mVpns") 238 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 239 240 private boolean mLockdownEnabled; 241 private LockdownVpnTracker mLockdownTracker; 242 243 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 244 private Object mRulesLock = new Object(); 245 /** Currently active network rules by UID. */ 246 private SparseIntArray mUidRules = new SparseIntArray(); 247 /** Set of ifaces that are costly. */ 248 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 249 250 /** 251 * Sometimes we want to refer to the individual network state 252 * trackers separately, and sometimes we just want to treat them 253 * abstractly. 254 */ 255 private NetworkStateTracker mNetTrackers[]; 256 257 private Context mContext; 258 private int mNetworkPreference; 259 // 0 is full bad, 100 is full good 260 private int mDefaultInetConditionPublished = 0; 261 262 private Object mDnsLock = new Object(); 263 private int mNumDnsEntries; 264 265 private boolean mTestMode; 266 private static ConnectivityService sServiceInstance; 267 268 private INetworkManagementService mNetd; 269 private INetworkPolicyManager mPolicyManager; 270 271 private String mCurrentTcpBufferSizes; 272 273 private static final int ENABLED = 1; 274 private static final int DISABLED = 0; 275 276 // Arguments to rematchNetworkAndRequests() 277 private enum NascentState { 278 // Indicates a network was just validated for the first time. If the network is found to 279 // be unwanted (i.e. not satisfy any NetworkRequests) it is torn down. 280 JUST_VALIDATED, 281 // Indicates a network was not validated for the first time immediately prior to this call. 282 NOT_JUST_VALIDATED 283 }; 284 private enum ReapUnvalidatedNetworks { 285 // Tear down unvalidated networks that have no chance (i.e. even if validated) of becoming 286 // the highest scoring network satisfying a NetworkRequest. This should be passed when it's 287 // known that there may be unvalidated networks that could potentially be reaped, and when 288 // all networks have been rematched against all NetworkRequests. 289 REAP, 290 // Don't reap unvalidated networks. This should be passed when it's known that there are 291 // no unvalidated networks that could potentially be reaped, and when some networks have 292 // not yet been rematched against all NetworkRequests. 293 DONT_REAP 294 }; 295 296 /** 297 * used internally to change our mobile data enabled flag 298 */ 299 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 300 301 /** 302 * used internally to clear a wakelock when transitioning 303 * from one net to another. Clear happens when we get a new 304 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 305 * after a timeout if no network is found (typically 1 min). 306 */ 307 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 308 309 /** 310 * used internally to reload global proxy settings 311 */ 312 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 313 314 /** 315 * used internally to set external dependency met/unmet 316 * arg1 = ENABLED (met) or DISABLED (unmet) 317 * arg2 = NetworkType 318 */ 319 private static final int EVENT_SET_DEPENDENCY_MET = 10; 320 321 /** 322 * used internally to send a sticky broadcast delayed. 323 */ 324 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 325 326 /** 327 * Used internally to 328 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 329 */ 330 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 331 332 /** 333 * Used internally to disable fail fast of mobile data 334 */ 335 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 336 337 /** 338 * used internally to indicate that data sampling interval is up 339 */ 340 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 341 342 /** 343 * PAC manager has received new port. 344 */ 345 private static final int EVENT_PROXY_HAS_CHANGED = 16; 346 347 /** 348 * used internally when registering NetworkFactories 349 * obj = NetworkFactoryInfo 350 */ 351 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 352 353 /** 354 * used internally when registering NetworkAgents 355 * obj = Messenger 356 */ 357 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 358 359 /** 360 * used to add a network request 361 * includes a NetworkRequestInfo 362 */ 363 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 364 365 /** 366 * indicates a timeout period is over - check if we had a network yet or not 367 * and if not, call the timeout calback (but leave the request live until they 368 * cancel it. 369 * includes a NetworkRequestInfo 370 */ 371 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 372 373 /** 374 * used to add a network listener - no request 375 * includes a NetworkRequestInfo 376 */ 377 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 378 379 /** 380 * used to remove a network request, either a listener or a real request 381 * arg1 = UID of caller 382 * obj = NetworkRequest 383 */ 384 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 385 386 /** 387 * used internally when registering NetworkFactories 388 * obj = Messenger 389 */ 390 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 391 392 /** 393 * used internally to expire a wakelock when transitioning 394 * from one net to another. Expire happens when we fail to find 395 * a new network (typically after 1 minute) - 396 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 397 * a replacement network. 398 */ 399 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 400 401 /** 402 * Used internally to indicate the system is ready. 403 */ 404 private static final int EVENT_SYSTEM_READY = 25; 405 406 /** 407 * used to add a network request with a pending intent 408 * includes a NetworkRequestInfo 409 */ 410 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 411 412 /** 413 * used to remove a pending intent and its associated network request. 414 * arg1 = UID of caller 415 * obj = PendingIntent 416 */ 417 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 418 419 420 /** Handler used for internal events. */ 421 final private InternalHandler mHandler; 422 /** Handler used for incoming {@link NetworkStateTracker} events. */ 423 final private NetworkStateTrackerHandler mTrackerHandler; 424 425 private boolean mSystemReady; 426 private Intent mInitialBroadcast; 427 428 private PowerManager.WakeLock mNetTransitionWakeLock; 429 private String mNetTransitionWakeLockCausedBy = ""; 430 private int mNetTransitionWakeLockSerialNumber; 431 private int mNetTransitionWakeLockTimeout; 432 private final PowerManager.WakeLock mPendingIntentWakeLock; 433 434 private InetAddress mDefaultDns; 435 436 // used in DBG mode to track inet condition reports 437 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 438 private ArrayList mInetLog; 439 440 // track the current default http proxy - tell the world if we get a new one (real change) 441 private volatile ProxyInfo mDefaultProxy = null; 442 private Object mProxyLock = new Object(); 443 private boolean mDefaultProxyDisabled = false; 444 445 // track the global proxy. 446 private ProxyInfo mGlobalProxy = null; 447 448 private PacManager mPacManager = null; 449 450 private SettingsObserver mSettingsObserver; 451 452 private UserManager mUserManager; 453 454 NetworkConfig[] mNetConfigs; 455 int mNetworksDefined; 456 457 // the set of network types that can only be enabled by system/sig apps 458 List mProtectedNetworks; 459 460 private DataConnectionStats mDataConnectionStats; 461 462 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 463 464 TelephonyManager mTelephonyManager; 465 466 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 467 private final static int MIN_NET_ID = 100; // some reserved marks 468 private final static int MAX_NET_ID = 65535; 469 private int mNextNetId = MIN_NET_ID; 470 471 // sequence number of NetworkRequests 472 private int mNextNetworkRequestId = 1; 473 474 /** 475 * Implements support for the legacy "one network per network type" model. 476 * 477 * We used to have a static array of NetworkStateTrackers, one for each 478 * network type, but that doesn't work any more now that we can have, 479 * for example, more that one wifi network. This class stores all the 480 * NetworkAgentInfo objects that support a given type, but the legacy 481 * API will only see the first one. 482 * 483 * It serves two main purposes: 484 * 485 * 1. Provide information about "the network for a given type" (since this 486 * API only supports one). 487 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 488 * the first network for a given type changes, or if the default network 489 * changes. 490 */ 491 private class LegacyTypeTracker { 492 493 private static final boolean DBG = true; 494 private static final boolean VDBG = false; 495 private static final String TAG = "CSLegacyTypeTracker"; 496 497 /** 498 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 499 * Each list holds references to all NetworkAgentInfos that are used to 500 * satisfy requests for that network type. 501 * 502 * This array is built out at startup such that an unsupported network 503 * doesn't get an ArrayList instance, making this a tristate: 504 * unsupported, supported but not active and active. 505 * 506 * The actual lists are populated when we scan the network types that 507 * are supported on this device. 508 */ 509 private ArrayList<NetworkAgentInfo> mTypeLists[]; 510 511 public LegacyTypeTracker() { 512 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 513 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 514 } 515 516 public void addSupportedType(int type) { 517 if (mTypeLists[type] != null) { 518 throw new IllegalStateException( 519 "legacy list for type " + type + "already initialized"); 520 } 521 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 522 } 523 524 public boolean isTypeSupported(int type) { 525 return isNetworkTypeValid(type) && mTypeLists[type] != null; 526 } 527 528 public NetworkAgentInfo getNetworkForType(int type) { 529 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 530 return mTypeLists[type].get(0); 531 } else { 532 return null; 533 } 534 } 535 536 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 537 if (DBG) { 538 log("Sending " + (connected ? "connected" : "disconnected") + 539 " broadcast for type " + type + " " + nai.name() + 540 " isDefaultNetwork=" + isDefaultNetwork(nai)); 541 } 542 } 543 544 /** Adds the given network to the specified legacy type list. */ 545 public void add(int type, NetworkAgentInfo nai) { 546 if (!isTypeSupported(type)) { 547 return; // Invalid network type. 548 } 549 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 550 551 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 552 if (list.contains(nai)) { 553 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 554 return; 555 } 556 557 list.add(nai); 558 559 // Send a broadcast if this is the first network of its type or if it's the default. 560 if (list.size() == 1 || isDefaultNetwork(nai)) { 561 maybeLogBroadcast(nai, true, type); 562 sendLegacyNetworkBroadcast(nai, true, type); 563 } 564 } 565 566 /** Removes the given network from the specified legacy type list. */ 567 public void remove(int type, NetworkAgentInfo nai) { 568 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 569 if (list == null || list.isEmpty()) { 570 return; 571 } 572 573 boolean wasFirstNetwork = list.get(0).equals(nai); 574 575 if (!list.remove(nai)) { 576 return; 577 } 578 579 if (wasFirstNetwork || isDefaultNetwork(nai)) { 580 maybeLogBroadcast(nai, false, type); 581 sendLegacyNetworkBroadcast(nai, false, type); 582 } 583 584 if (!list.isEmpty() && wasFirstNetwork) { 585 if (DBG) log("Other network available for type " + type + 586 ", sending connected broadcast"); 587 maybeLogBroadcast(list.get(0), false, type); 588 sendLegacyNetworkBroadcast(list.get(0), false, type); 589 } 590 } 591 592 /** Removes the given network from all legacy type lists. */ 593 public void remove(NetworkAgentInfo nai) { 594 if (VDBG) log("Removing agent " + nai); 595 for (int type = 0; type < mTypeLists.length; type++) { 596 remove(type, nai); 597 } 598 } 599 600 private String naiToString(NetworkAgentInfo nai) { 601 String name = (nai != null) ? nai.name() : "null"; 602 String state = (nai.networkInfo != null) ? 603 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 604 "???/???"; 605 return name + " " + state; 606 } 607 608 public void dump(IndentingPrintWriter pw) { 609 for (int type = 0; type < mTypeLists.length; type++) { 610 if (mTypeLists[type] == null) continue; 611 pw.print(type + " "); 612 pw.increaseIndent(); 613 if (mTypeLists[type].size() == 0) pw.println("none"); 614 for (NetworkAgentInfo nai : mTypeLists[type]) { 615 pw.println(naiToString(nai)); 616 } 617 pw.decreaseIndent(); 618 } 619 } 620 621 // This class needs its own log method because it has a different TAG. 622 private void log(String s) { 623 Slog.d(TAG, s); 624 } 625 626 } 627 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 628 629 public ConnectivityService(Context context, INetworkManagementService netManager, 630 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 631 if (DBG) log("ConnectivityService starting up"); 632 633 NetworkCapabilities netCap = new NetworkCapabilities(); 634 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 635 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 636 mDefaultRequest = new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 637 NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(), 638 NetworkRequestInfo.REQUEST); 639 mNetworkRequests.put(mDefaultRequest, nri); 640 641 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 642 handlerThread.start(); 643 mHandler = new InternalHandler(handlerThread.getLooper()); 644 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 645 646 // setup our unique device name 647 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 648 String id = Settings.Secure.getString(context.getContentResolver(), 649 Settings.Secure.ANDROID_ID); 650 if (id != null && id.length() > 0) { 651 String name = new String("android-").concat(id); 652 SystemProperties.set("net.hostname", name); 653 } 654 } 655 656 // read our default dns server ip 657 String dns = Settings.Global.getString(context.getContentResolver(), 658 Settings.Global.DEFAULT_DNS_SERVER); 659 if (dns == null || dns.length() == 0) { 660 dns = context.getResources().getString( 661 com.android.internal.R.string.config_default_dns_server); 662 } 663 try { 664 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 665 } catch (IllegalArgumentException e) { 666 loge("Error setting defaultDns using " + dns); 667 } 668 669 mContext = checkNotNull(context, "missing Context"); 670 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 671 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 672 mKeyStore = KeyStore.getInstance(); 673 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 674 675 try { 676 mPolicyManager.registerListener(mPolicyListener); 677 } catch (RemoteException e) { 678 // ouch, no rules updates means some processes may never get network 679 loge("unable to register INetworkPolicyListener" + e.toString()); 680 } 681 682 final PowerManager powerManager = (PowerManager) context.getSystemService( 683 Context.POWER_SERVICE); 684 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 685 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 686 com.android.internal.R.integer.config_networkTransitionTimeout); 687 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 688 689 mNetTrackers = new NetworkStateTracker[ 690 ConnectivityManager.MAX_NETWORK_TYPE+1]; 691 692 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 693 694 // TODO: What is the "correct" way to do determine if this is a wifi only device? 695 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 696 log("wifiOnly=" + wifiOnly); 697 String[] naStrings = context.getResources().getStringArray( 698 com.android.internal.R.array.networkAttributes); 699 for (String naString : naStrings) { 700 try { 701 NetworkConfig n = new NetworkConfig(naString); 702 if (VDBG) log("naString=" + naString + " config=" + n); 703 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 704 loge("Error in networkAttributes - ignoring attempt to define type " + 705 n.type); 706 continue; 707 } 708 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 709 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 710 n.type); 711 continue; 712 } 713 if (mNetConfigs[n.type] != null) { 714 loge("Error in networkAttributes - ignoring attempt to redefine type " + 715 n.type); 716 continue; 717 } 718 mLegacyTypeTracker.addSupportedType(n.type); 719 720 mNetConfigs[n.type] = n; 721 mNetworksDefined++; 722 } catch(Exception e) { 723 // ignore it - leave the entry null 724 } 725 } 726 727 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 728 if (mNetConfigs[TYPE_VPN] == null) { 729 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 730 // don't need to add TYPE_VPN to mNetConfigs. 731 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 732 mNetworksDefined++; // used only in the log() statement below. 733 } 734 735 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 736 737 mProtectedNetworks = new ArrayList<Integer>(); 738 int[] protectedNetworks = context.getResources().getIntArray( 739 com.android.internal.R.array.config_protectedNetworks); 740 for (int p : protectedNetworks) { 741 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 742 mProtectedNetworks.add(p); 743 } else { 744 if (DBG) loge("Ignoring protectedNetwork " + p); 745 } 746 } 747 748 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 749 && SystemProperties.get("ro.build.type").equals("eng"); 750 751 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 752 753 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 754 755 //set up the listener for user state for creating user VPNs 756 IntentFilter intentFilter = new IntentFilter(); 757 intentFilter.addAction(Intent.ACTION_USER_STARTING); 758 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 759 mContext.registerReceiverAsUser( 760 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 761 762 try { 763 mNetd.registerObserver(mTethering); 764 mNetd.registerObserver(mDataActivityObserver); 765 } catch (RemoteException e) { 766 loge("Error registering observer :" + e); 767 } 768 769 if (DBG) { 770 mInetLog = new ArrayList(); 771 } 772 773 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 774 mSettingsObserver.observe(mContext); 775 776 mDataConnectionStats = new DataConnectionStats(mContext); 777 mDataConnectionStats.startMonitoring(); 778 779 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 780 781 IntentFilter filter = new IntentFilter(); 782 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 783 mContext.registerReceiver( 784 new BroadcastReceiver() { 785 @Override 786 public void onReceive(Context context, Intent intent) { 787 String action = intent.getAction(); 788 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 789 mHandler.sendMessage(mHandler.obtainMessage 790 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 791 } 792 } 793 }, 794 new IntentFilter(filter)); 795 796 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 797 798 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 799 } 800 801 private synchronized int nextNetworkRequestId() { 802 return mNextNetworkRequestId++; 803 } 804 805 private void assignNextNetId(NetworkAgentInfo nai) { 806 synchronized (mNetworkForNetId) { 807 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 808 int netId = mNextNetId; 809 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 810 // Make sure NetID unused. http://b/16815182 811 if (mNetworkForNetId.get(netId) == null) { 812 nai.network = new Network(netId); 813 mNetworkForNetId.put(netId, nai); 814 return; 815 } 816 } 817 } 818 throw new IllegalStateException("No free netIds"); 819 } 820 821 private int getConnectivityChangeDelay() { 822 final ContentResolver cr = mContext.getContentResolver(); 823 824 /** Check system properties for the default value then use secure settings value, if any. */ 825 int defaultDelay = SystemProperties.getInt( 826 "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY, 827 ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT); 828 return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY, 829 defaultDelay); 830 } 831 832 private boolean teardown(NetworkStateTracker netTracker) { 833 if (netTracker.teardown()) { 834 netTracker.setTeardownRequested(true); 835 return true; 836 } else { 837 return false; 838 } 839 } 840 841 private NetworkState getFilteredNetworkState(int networkType, int uid) { 842 NetworkInfo info = null; 843 LinkProperties lp = null; 844 NetworkCapabilities nc = null; 845 Network network = null; 846 847 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 848 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 849 if (nai != null) { 850 synchronized (nai) { 851 info = new NetworkInfo(nai.networkInfo); 852 lp = new LinkProperties(nai.linkProperties); 853 nc = new NetworkCapabilities(nai.networkCapabilities); 854 network = new Network(nai.network); 855 } 856 info.setType(networkType); 857 } else { 858 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 859 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 860 info.setIsAvailable(true); 861 lp = new LinkProperties(); 862 nc = new NetworkCapabilities(); 863 network = null; 864 } 865 info = getFilteredNetworkInfo(info, lp, uid); 866 } 867 868 return new NetworkState(info, lp, nc, network); 869 } 870 871 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 872 if (network == null) { 873 return null; 874 } 875 synchronized (mNetworkForNetId) { 876 return mNetworkForNetId.get(network.netId); 877 } 878 }; 879 880 private NetworkState getUnfilteredActiveNetworkState(int uid) { 881 NetworkInfo info = null; 882 LinkProperties lp = null; 883 NetworkCapabilities nc = null; 884 Network network = null; 885 886 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 887 888 if (!mLockdownEnabled) { 889 int user = UserHandle.getUserId(uid); 890 synchronized (mVpns) { 891 Vpn vpn = mVpns.get(user); 892 if (vpn != null && vpn.appliesToUid(uid)) { 893 // getUnderlyingNetworks() returns: 894 // null => the VPN didn't specify anything, so we use the default. 895 // empty array => the VPN explicitly said "no default network". 896 // non-empty array => the VPN specified one or more default networks; we use the 897 // first one. 898 Network[] networks = vpn.getUnderlyingNetworks(); 899 if (networks != null) { 900 if (networks.length > 0) { 901 nai = getNetworkAgentInfoForNetwork(networks[0]); 902 } else { 903 nai = null; 904 } 905 } 906 } 907 } 908 } 909 910 if (nai != null) { 911 synchronized (nai) { 912 info = new NetworkInfo(nai.networkInfo); 913 lp = new LinkProperties(nai.linkProperties); 914 nc = new NetworkCapabilities(nai.networkCapabilities); 915 network = new Network(nai.network); 916 } 917 } 918 919 return new NetworkState(info, lp, nc, network); 920 } 921 922 /** 923 * Check if UID should be blocked from using the network with the given LinkProperties. 924 */ 925 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 926 final boolean networkCostly; 927 final int uidRules; 928 929 final String iface = (lp == null ? "" : lp.getInterfaceName()); 930 synchronized (mRulesLock) { 931 networkCostly = mMeteredIfaces.contains(iface); 932 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 933 } 934 935 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 936 return true; 937 } 938 939 // no restrictive rules; network is visible 940 return false; 941 } 942 943 /** 944 * Return a filtered {@link NetworkInfo}, potentially marked 945 * {@link DetailedState#BLOCKED} based on 946 * {@link #isNetworkWithLinkPropertiesBlocked}. 947 */ 948 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 949 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 950 // network is blocked; clone and override state 951 info = new NetworkInfo(info); 952 info.setDetailedState(DetailedState.BLOCKED, null, null); 953 if (DBG) log("returning Blocked NetworkInfo"); 954 } 955 if (info != null && mLockdownTracker != null) { 956 info = mLockdownTracker.augmentNetworkInfo(info); 957 if (DBG) log("returning Locked NetworkInfo"); 958 } 959 return info; 960 } 961 962 /** 963 * Return NetworkInfo for the active (i.e., connected) network interface. 964 * It is assumed that at most one network is active at a time. If more 965 * than one is active, it is indeterminate which will be returned. 966 * @return the info for the active network, or {@code null} if none is 967 * active 968 */ 969 @Override 970 public NetworkInfo getActiveNetworkInfo() { 971 enforceAccessPermission(); 972 final int uid = Binder.getCallingUid(); 973 NetworkState state = getUnfilteredActiveNetworkState(uid); 974 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 975 } 976 977 /** 978 * Find the first Provisioning network. 979 * 980 * @return NetworkInfo or null if none. 981 */ 982 private NetworkInfo getProvisioningNetworkInfo() { 983 enforceAccessPermission(); 984 985 // Find the first Provisioning Network 986 NetworkInfo provNi = null; 987 for (NetworkInfo ni : getAllNetworkInfo()) { 988 if (ni.isConnectedToProvisioningNetwork()) { 989 provNi = ni; 990 break; 991 } 992 } 993 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 994 return provNi; 995 } 996 997 /** 998 * Find the first Provisioning network or the ActiveDefaultNetwork 999 * if there is no Provisioning network 1000 * 1001 * @return NetworkInfo or null if none. 1002 */ 1003 @Override 1004 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 1005 enforceAccessPermission(); 1006 1007 NetworkInfo provNi = getProvisioningNetworkInfo(); 1008 if (provNi == null) { 1009 provNi = getActiveNetworkInfo(); 1010 } 1011 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 1012 return provNi; 1013 } 1014 1015 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1016 enforceAccessPermission(); 1017 final int uid = Binder.getCallingUid(); 1018 NetworkState state = getUnfilteredActiveNetworkState(uid); 1019 return state.networkInfo; 1020 } 1021 1022 @Override 1023 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1024 enforceConnectivityInternalPermission(); 1025 NetworkState state = getUnfilteredActiveNetworkState(uid); 1026 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1027 } 1028 1029 @Override 1030 public NetworkInfo getNetworkInfo(int networkType) { 1031 enforceAccessPermission(); 1032 final int uid = Binder.getCallingUid(); 1033 NetworkState state = getFilteredNetworkState(networkType, uid); 1034 return state.networkInfo; 1035 } 1036 1037 @Override 1038 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1039 enforceAccessPermission(); 1040 final int uid = Binder.getCallingUid(); 1041 NetworkInfo info = null; 1042 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1043 if (nai != null) { 1044 synchronized (nai) { 1045 info = new NetworkInfo(nai.networkInfo); 1046 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1047 } 1048 } 1049 return info; 1050 } 1051 1052 @Override 1053 public NetworkInfo[] getAllNetworkInfo() { 1054 enforceAccessPermission(); 1055 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1056 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1057 networkType++) { 1058 NetworkInfo info = getNetworkInfo(networkType); 1059 if (info != null) { 1060 result.add(info); 1061 } 1062 } 1063 return result.toArray(new NetworkInfo[result.size()]); 1064 } 1065 1066 @Override 1067 public Network getNetworkForType(int networkType) { 1068 enforceAccessPermission(); 1069 final int uid = Binder.getCallingUid(); 1070 NetworkState state = getFilteredNetworkState(networkType, uid); 1071 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1072 return state.network; 1073 } 1074 return null; 1075 } 1076 1077 @Override 1078 public Network[] getAllNetworks() { 1079 enforceAccessPermission(); 1080 final ArrayList<Network> result = new ArrayList(); 1081 synchronized (mNetworkForNetId) { 1082 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1083 result.add(new Network(mNetworkForNetId.valueAt(i).network)); 1084 } 1085 } 1086 return result.toArray(new Network[result.size()]); 1087 } 1088 1089 private NetworkCapabilities getNetworkCapabilitiesAndValidation(NetworkAgentInfo nai) { 1090 if (nai != null) { 1091 synchronized (nai) { 1092 if (nai.created) { 1093 NetworkCapabilities nc = new NetworkCapabilities(nai.networkCapabilities); 1094 if (nai.validated) { 1095 nc.addCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED); 1096 } else { 1097 nc.removeCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED); 1098 } 1099 return nc; 1100 } 1101 } 1102 } 1103 return null; 1104 } 1105 1106 @Override 1107 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1108 // The basic principle is: if an app's traffic could possibly go over a 1109 // network, without the app doing anything multinetwork-specific, 1110 // (hence, by "default"), then include that network's capabilities in 1111 // the array. 1112 // 1113 // In the normal case, app traffic only goes over the system's default 1114 // network connection, so that's the only network returned. 1115 // 1116 // With a VPN in force, some app traffic may go into the VPN, and thus 1117 // over whatever underlying networks the VPN specifies, while other app 1118 // traffic may go over the system default network (e.g.: a split-tunnel 1119 // VPN, or an app disallowed by the VPN), so the set of networks 1120 // returned includes the VPN's underlying networks and the system 1121 // default. 1122 enforceAccessPermission(); 1123 1124 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1125 1126 NetworkAgentInfo nai = getDefaultNetwork(); 1127 NetworkCapabilities nc = getNetworkCapabilitiesAndValidation(getDefaultNetwork()); 1128 if (nc != null) { 1129 result.put(nai.network, nc); 1130 } 1131 1132 if (!mLockdownEnabled) { 1133 synchronized (mVpns) { 1134 Vpn vpn = mVpns.get(userId); 1135 if (vpn != null) { 1136 Network[] networks = vpn.getUnderlyingNetworks(); 1137 if (networks != null) { 1138 for (Network network : networks) { 1139 nai = getNetworkAgentInfoForNetwork(network); 1140 nc = getNetworkCapabilitiesAndValidation(nai); 1141 if (nc != null) { 1142 result.put(nai.network, nc); 1143 } 1144 } 1145 } 1146 } 1147 } 1148 } 1149 1150 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1151 out = result.values().toArray(out); 1152 return out; 1153 } 1154 1155 @Override 1156 public boolean isNetworkSupported(int networkType) { 1157 enforceAccessPermission(); 1158 return mLegacyTypeTracker.isTypeSupported(networkType); 1159 } 1160 1161 /** 1162 * Return LinkProperties for the active (i.e., connected) default 1163 * network interface. It is assumed that at most one default network 1164 * is active at a time. If more than one is active, it is indeterminate 1165 * which will be returned. 1166 * @return the ip properties for the active network, or {@code null} if 1167 * none is active 1168 */ 1169 @Override 1170 public LinkProperties getActiveLinkProperties() { 1171 enforceAccessPermission(); 1172 final int uid = Binder.getCallingUid(); 1173 NetworkState state = getUnfilteredActiveNetworkState(uid); 1174 return state.linkProperties; 1175 } 1176 1177 @Override 1178 public LinkProperties getLinkPropertiesForType(int networkType) { 1179 enforceAccessPermission(); 1180 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1181 if (nai != null) { 1182 synchronized (nai) { 1183 return new LinkProperties(nai.linkProperties); 1184 } 1185 } 1186 return null; 1187 } 1188 1189 // TODO - this should be ALL networks 1190 @Override 1191 public LinkProperties getLinkProperties(Network network) { 1192 enforceAccessPermission(); 1193 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1194 if (nai != null) { 1195 synchronized (nai) { 1196 return new LinkProperties(nai.linkProperties); 1197 } 1198 } 1199 return null; 1200 } 1201 1202 @Override 1203 public NetworkCapabilities getNetworkCapabilities(Network network) { 1204 enforceAccessPermission(); 1205 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1206 if (nai != null) { 1207 synchronized (nai) { 1208 return new NetworkCapabilities(nai.networkCapabilities); 1209 } 1210 } 1211 return null; 1212 } 1213 1214 @Override 1215 public NetworkState[] getAllNetworkState() { 1216 enforceAccessPermission(); 1217 final int uid = Binder.getCallingUid(); 1218 final ArrayList<NetworkState> result = Lists.newArrayList(); 1219 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1220 networkType++) { 1221 NetworkState state = getFilteredNetworkState(networkType, uid); 1222 if (state.networkInfo != null) { 1223 result.add(state); 1224 } 1225 } 1226 return result.toArray(new NetworkState[result.size()]); 1227 } 1228 1229 @Override 1230 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1231 enforceAccessPermission(); 1232 final int uid = Binder.getCallingUid(); 1233 final long token = Binder.clearCallingIdentity(); 1234 try { 1235 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1236 if (state.networkInfo != null) { 1237 try { 1238 return mPolicyManager.getNetworkQuotaInfo(state); 1239 } catch (RemoteException e) { 1240 } 1241 } 1242 return null; 1243 } finally { 1244 Binder.restoreCallingIdentity(token); 1245 } 1246 } 1247 1248 @Override 1249 public boolean isActiveNetworkMetered() { 1250 enforceAccessPermission(); 1251 final int uid = Binder.getCallingUid(); 1252 final long token = Binder.clearCallingIdentity(); 1253 try { 1254 return isActiveNetworkMeteredUnchecked(uid); 1255 } finally { 1256 Binder.restoreCallingIdentity(token); 1257 } 1258 } 1259 1260 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1261 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1262 if (state.networkInfo != null) { 1263 try { 1264 return mPolicyManager.isNetworkMetered(state); 1265 } catch (RemoteException e) { 1266 } 1267 } 1268 return false; 1269 } 1270 1271 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1272 @Override 1273 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1274 int deviceType = Integer.parseInt(label); 1275 sendDataActivityBroadcast(deviceType, active, tsNanos); 1276 } 1277 }; 1278 1279 /** 1280 * Ensure that a network route exists to deliver traffic to the specified 1281 * host via the specified network interface. 1282 * @param networkType the type of the network over which traffic to the 1283 * specified host is to be routed 1284 * @param hostAddress the IP address of the host to which the route is 1285 * desired 1286 * @return {@code true} on success, {@code false} on failure 1287 */ 1288 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1289 enforceChangePermission(); 1290 if (mProtectedNetworks.contains(networkType)) { 1291 enforceConnectivityInternalPermission(); 1292 } 1293 1294 InetAddress addr; 1295 try { 1296 addr = InetAddress.getByAddress(hostAddress); 1297 } catch (UnknownHostException e) { 1298 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1299 return false; 1300 } 1301 1302 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1303 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1304 return false; 1305 } 1306 1307 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1308 if (nai == null) { 1309 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1310 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1311 } else { 1312 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1313 } 1314 return false; 1315 } 1316 1317 DetailedState netState; 1318 synchronized (nai) { 1319 netState = nai.networkInfo.getDetailedState(); 1320 } 1321 1322 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1323 if (VDBG) { 1324 log("requestRouteToHostAddress on down network " 1325 + "(" + networkType + ") - dropped" 1326 + " netState=" + netState); 1327 } 1328 return false; 1329 } 1330 1331 final int uid = Binder.getCallingUid(); 1332 final long token = Binder.clearCallingIdentity(); 1333 try { 1334 LinkProperties lp; 1335 int netId; 1336 synchronized (nai) { 1337 lp = nai.linkProperties; 1338 netId = nai.network.netId; 1339 } 1340 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1341 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1342 return ok; 1343 } finally { 1344 Binder.restoreCallingIdentity(token); 1345 } 1346 } 1347 1348 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1349 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1350 if (bestRoute == null) { 1351 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1352 } else { 1353 String iface = bestRoute.getInterface(); 1354 if (bestRoute.getGateway().equals(addr)) { 1355 // if there is no better route, add the implied hostroute for our gateway 1356 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1357 } else { 1358 // if we will connect to this through another route, add a direct route 1359 // to it's gateway 1360 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1361 } 1362 } 1363 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1364 try { 1365 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1366 } catch (Exception e) { 1367 // never crash - catch them all 1368 if (DBG) loge("Exception trying to add a route: " + e); 1369 return false; 1370 } 1371 return true; 1372 } 1373 1374 public void setDataDependency(int networkType, boolean met) { 1375 enforceConnectivityInternalPermission(); 1376 1377 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1378 (met ? ENABLED : DISABLED), networkType)); 1379 } 1380 1381 private void handleSetDependencyMet(int networkType, boolean met) { 1382 if (mNetTrackers[networkType] != null) { 1383 if (DBG) { 1384 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1385 } 1386 mNetTrackers[networkType].setDependencyMet(met); 1387 } 1388 } 1389 1390 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1391 @Override 1392 public void onUidRulesChanged(int uid, int uidRules) { 1393 // caller is NPMS, since we only register with them 1394 if (LOGD_RULES) { 1395 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1396 } 1397 1398 synchronized (mRulesLock) { 1399 // skip update when we've already applied rules 1400 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1401 if (oldRules == uidRules) return; 1402 1403 mUidRules.put(uid, uidRules); 1404 } 1405 1406 // TODO: notify UID when it has requested targeted updates 1407 } 1408 1409 @Override 1410 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1411 // caller is NPMS, since we only register with them 1412 if (LOGD_RULES) { 1413 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1414 } 1415 1416 synchronized (mRulesLock) { 1417 mMeteredIfaces.clear(); 1418 for (String iface : meteredIfaces) { 1419 mMeteredIfaces.add(iface); 1420 } 1421 } 1422 } 1423 1424 @Override 1425 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1426 // caller is NPMS, since we only register with them 1427 if (LOGD_RULES) { 1428 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1429 } 1430 1431 // kick off connectivity change broadcast for active network, since 1432 // global background policy change is radical. 1433 // TODO: Dead code; remove. 1434 // 1435 // final int networkType = mActiveDefaultNetwork; 1436 // if (isNetworkTypeValid(networkType)) { 1437 // final NetworkStateTracker tracker = mNetTrackers[networkType]; 1438 // if (tracker != null) { 1439 // final NetworkInfo info = tracker.getNetworkInfo(); 1440 // if (info != null && info.isConnected()) { 1441 // sendConnectedBroadcast(info); 1442 // } 1443 // } 1444 // } 1445 } 1446 }; 1447 1448 @Override 1449 public void setPolicyDataEnable(int networkType, boolean enabled) { 1450 // only someone like NPMS should only be calling us 1451 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1452 1453 mHandler.sendMessage(mHandler.obtainMessage( 1454 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1455 } 1456 1457 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1458 // TODO - handle this passing to factories 1459// if (isNetworkTypeValid(networkType)) { 1460// final NetworkStateTracker tracker = mNetTrackers[networkType]; 1461// if (tracker != null) { 1462// tracker.setPolicyDataEnable(enabled); 1463// } 1464// } 1465 } 1466 1467 private void enforceInternetPermission() { 1468 mContext.enforceCallingOrSelfPermission( 1469 android.Manifest.permission.INTERNET, 1470 "ConnectivityService"); 1471 } 1472 1473 private void enforceAccessPermission() { 1474 mContext.enforceCallingOrSelfPermission( 1475 android.Manifest.permission.ACCESS_NETWORK_STATE, 1476 "ConnectivityService"); 1477 } 1478 1479 private void enforceChangePermission() { 1480 mContext.enforceCallingOrSelfPermission( 1481 android.Manifest.permission.CHANGE_NETWORK_STATE, 1482 "ConnectivityService"); 1483 } 1484 1485 private void enforceTetherAccessPermission() { 1486 mContext.enforceCallingOrSelfPermission( 1487 android.Manifest.permission.ACCESS_NETWORK_STATE, 1488 "ConnectivityService"); 1489 } 1490 1491 private void enforceConnectivityInternalPermission() { 1492 mContext.enforceCallingOrSelfPermission( 1493 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1494 "ConnectivityService"); 1495 } 1496 1497 public void sendConnectedBroadcast(NetworkInfo info) { 1498 enforceConnectivityInternalPermission(); 1499 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1500 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1501 } 1502 1503 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 1504 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1505 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 1506 } 1507 1508 private void sendInetConditionBroadcast(NetworkInfo info) { 1509 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1510 } 1511 1512 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1513 if (mLockdownTracker != null) { 1514 info = mLockdownTracker.augmentNetworkInfo(info); 1515 } 1516 1517 Intent intent = new Intent(bcastType); 1518 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1519 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1520 if (info.isFailover()) { 1521 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1522 info.setFailover(false); 1523 } 1524 if (info.getReason() != null) { 1525 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1526 } 1527 if (info.getExtraInfo() != null) { 1528 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1529 info.getExtraInfo()); 1530 } 1531 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1532 return intent; 1533 } 1534 1535 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1536 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1537 } 1538 1539 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 1540 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 1541 } 1542 1543 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1544 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1545 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1546 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1547 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1548 final long ident = Binder.clearCallingIdentity(); 1549 try { 1550 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1551 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1552 } finally { 1553 Binder.restoreCallingIdentity(ident); 1554 } 1555 } 1556 1557 private void sendStickyBroadcast(Intent intent) { 1558 synchronized(this) { 1559 if (!mSystemReady) { 1560 mInitialBroadcast = new Intent(intent); 1561 } 1562 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1563 if (DBG) { 1564 log("sendStickyBroadcast: action=" + intent.getAction()); 1565 } 1566 1567 final long ident = Binder.clearCallingIdentity(); 1568 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1569 final IBatteryStats bs = BatteryStatsService.getService(); 1570 try { 1571 NetworkInfo ni = intent.getParcelableExtra( 1572 ConnectivityManager.EXTRA_NETWORK_INFO); 1573 bs.noteConnectivityChanged(intent.getIntExtra( 1574 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1575 ni != null ? ni.getState().toString() : "?"); 1576 } catch (RemoteException e) { 1577 } 1578 } 1579 try { 1580 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1581 } finally { 1582 Binder.restoreCallingIdentity(ident); 1583 } 1584 } 1585 } 1586 1587 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 1588 if (delayMs <= 0) { 1589 sendStickyBroadcast(intent); 1590 } else { 1591 if (VDBG) { 1592 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 1593 + intent.getAction()); 1594 } 1595 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1596 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 1597 } 1598 } 1599 1600 void systemReady() { 1601 // start network sampling .. 1602 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 1603 intent.setPackage(mContext.getPackageName()); 1604 1605 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 1606 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 1607 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 1608 1609 loadGlobalProxy(); 1610 1611 synchronized(this) { 1612 mSystemReady = true; 1613 if (mInitialBroadcast != null) { 1614 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1615 mInitialBroadcast = null; 1616 } 1617 } 1618 // load the global proxy at startup 1619 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1620 1621 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1622 // for user to unlock device. 1623 if (!updateLockdownVpn()) { 1624 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1625 mContext.registerReceiver(mUserPresentReceiver, filter); 1626 } 1627 1628 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1629 1630 mPermissionMonitor.startMonitoring(); 1631 } 1632 1633 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1634 @Override 1635 public void onReceive(Context context, Intent intent) { 1636 // Try creating lockdown tracker, since user present usually means 1637 // unlocked keystore. 1638 if (updateLockdownVpn()) { 1639 mContext.unregisterReceiver(this); 1640 } 1641 } 1642 }; 1643 1644 /** @hide */ 1645 @Override 1646 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1647 enforceConnectivityInternalPermission(); 1648 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1649// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1650 } 1651 1652 /** 1653 * Setup data activity tracking for the given network. 1654 * 1655 * Every {@code setupDataActivityTracking} should be paired with a 1656 * {@link #removeDataActivityTracking} for cleanup. 1657 */ 1658 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1659 final String iface = networkAgent.linkProperties.getInterfaceName(); 1660 1661 final int timeout; 1662 int type = ConnectivityManager.TYPE_NONE; 1663 1664 if (networkAgent.networkCapabilities.hasTransport( 1665 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1666 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1667 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1668 5); 1669 type = ConnectivityManager.TYPE_MOBILE; 1670 } else if (networkAgent.networkCapabilities.hasTransport( 1671 NetworkCapabilities.TRANSPORT_WIFI)) { 1672 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1673 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1674 0); 1675 type = ConnectivityManager.TYPE_WIFI; 1676 } else { 1677 // do not track any other networks 1678 timeout = 0; 1679 } 1680 1681 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1682 try { 1683 mNetd.addIdleTimer(iface, timeout, type); 1684 } catch (Exception e) { 1685 // You shall not crash! 1686 loge("Exception in setupDataActivityTracking " + e); 1687 } 1688 } 1689 } 1690 1691 /** 1692 * Remove data activity tracking when network disconnects. 1693 */ 1694 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1695 final String iface = networkAgent.linkProperties.getInterfaceName(); 1696 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1697 1698 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1699 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1700 try { 1701 // the call fails silently if no idletimer setup for this interface 1702 mNetd.removeIdleTimer(iface); 1703 } catch (Exception e) { 1704 loge("Exception in removeDataActivityTracking " + e); 1705 } 1706 } 1707 } 1708 1709 /** 1710 * Reads the network specific MTU size from reources. 1711 * and set it on it's iface. 1712 */ 1713 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1714 final String iface = newLp.getInterfaceName(); 1715 final int mtu = newLp.getMtu(); 1716 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1717 if (VDBG) log("identical MTU - not setting"); 1718 return; 1719 } 1720 1721 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1722 loge("Unexpected mtu value: " + mtu + ", " + iface); 1723 return; 1724 } 1725 1726 // Cannot set MTU without interface name 1727 if (TextUtils.isEmpty(iface)) { 1728 loge("Setting MTU size with null iface."); 1729 return; 1730 } 1731 1732 try { 1733 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1734 mNetd.setMtu(iface, mtu); 1735 } catch (Exception e) { 1736 Slog.e(TAG, "exception in setMtu()" + e); 1737 } 1738 } 1739 1740 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1741 1742 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1743 if (isDefaultNetwork(nai) == false) { 1744 return; 1745 } 1746 1747 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1748 String[] values = null; 1749 if (tcpBufferSizes != null) { 1750 values = tcpBufferSizes.split(","); 1751 } 1752 1753 if (values == null || values.length != 6) { 1754 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1755 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1756 values = tcpBufferSizes.split(","); 1757 } 1758 1759 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1760 1761 try { 1762 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1763 1764 final String prefix = "/sys/kernel/ipv4/tcp_"; 1765 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1766 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1767 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1768 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1769 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1770 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1771 mCurrentTcpBufferSizes = tcpBufferSizes; 1772 } catch (IOException e) { 1773 loge("Can't set TCP buffer sizes:" + e); 1774 } 1775 1776 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 1777 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 1778 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1779 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 1780 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1781 if (rwndValue != 0) { 1782 SystemProperties.set(sysctlKey, rwndValue.toString()); 1783 } 1784 } 1785 1786 private void flushVmDnsCache() { 1787 /* 1788 * Tell the VMs to toss their DNS caches 1789 */ 1790 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1791 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1792 /* 1793 * Connectivity events can happen before boot has completed ... 1794 */ 1795 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1796 final long ident = Binder.clearCallingIdentity(); 1797 try { 1798 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1799 } finally { 1800 Binder.restoreCallingIdentity(ident); 1801 } 1802 } 1803 1804 @Override 1805 public int getRestoreDefaultNetworkDelay(int networkType) { 1806 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1807 NETWORK_RESTORE_DELAY_PROP_NAME); 1808 if(restoreDefaultNetworkDelayStr != null && 1809 restoreDefaultNetworkDelayStr.length() != 0) { 1810 try { 1811 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1812 } catch (NumberFormatException e) { 1813 } 1814 } 1815 // if the system property isn't set, use the value for the apn type 1816 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1817 1818 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1819 (mNetConfigs[networkType] != null)) { 1820 ret = mNetConfigs[networkType].restoreTime; 1821 } 1822 return ret; 1823 } 1824 1825 @Override 1826 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1827 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1828 if (mContext.checkCallingOrSelfPermission( 1829 android.Manifest.permission.DUMP) 1830 != PackageManager.PERMISSION_GRANTED) { 1831 pw.println("Permission Denial: can't dump ConnectivityService " + 1832 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1833 Binder.getCallingUid()); 1834 return; 1835 } 1836 1837 pw.println("NetworkFactories for:"); 1838 pw.increaseIndent(); 1839 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1840 pw.println(nfi.name); 1841 } 1842 pw.decreaseIndent(); 1843 pw.println(); 1844 1845 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1846 pw.print("Active default network: "); 1847 if (defaultNai == null) { 1848 pw.println("none"); 1849 } else { 1850 pw.println(defaultNai.network.netId); 1851 } 1852 pw.println(); 1853 1854 pw.println("Current Networks:"); 1855 pw.increaseIndent(); 1856 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1857 pw.println(nai.toString()); 1858 pw.increaseIndent(); 1859 pw.println("Requests:"); 1860 pw.increaseIndent(); 1861 for (int i = 0; i < nai.networkRequests.size(); i++) { 1862 pw.println(nai.networkRequests.valueAt(i).toString()); 1863 } 1864 pw.decreaseIndent(); 1865 pw.println("Lingered:"); 1866 pw.increaseIndent(); 1867 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1868 pw.decreaseIndent(); 1869 pw.decreaseIndent(); 1870 } 1871 pw.decreaseIndent(); 1872 pw.println(); 1873 1874 pw.println("Network Requests:"); 1875 pw.increaseIndent(); 1876 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1877 pw.println(nri.toString()); 1878 } 1879 pw.println(); 1880 pw.decreaseIndent(); 1881 1882 pw.println("mLegacyTypeTracker:"); 1883 pw.increaseIndent(); 1884 mLegacyTypeTracker.dump(pw); 1885 pw.decreaseIndent(); 1886 pw.println(); 1887 1888 synchronized (this) { 1889 pw.println("NetworkTransitionWakeLock is currently " + 1890 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 1891 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 1892 } 1893 pw.println(); 1894 1895 mTethering.dump(fd, pw, args); 1896 1897 if (mInetLog != null) { 1898 pw.println(); 1899 pw.println("Inet condition reports:"); 1900 pw.increaseIndent(); 1901 for(int i = 0; i < mInetLog.size(); i++) { 1902 pw.println(mInetLog.get(i)); 1903 } 1904 pw.decreaseIndent(); 1905 } 1906 } 1907 1908 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1909 if (nai.network == null) return false; 1910 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1911 if (officialNai != null && officialNai.equals(nai)) return true; 1912 if (officialNai != null || VDBG) { 1913 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1914 " - " + nai); 1915 } 1916 return false; 1917 } 1918 1919 private boolean isRequest(NetworkRequest request) { 1920 return mNetworkRequests.get(request).isRequest; 1921 } 1922 1923 // must be stateless - things change under us. 1924 private class NetworkStateTrackerHandler extends Handler { 1925 public NetworkStateTrackerHandler(Looper looper) { 1926 super(looper); 1927 } 1928 1929 @Override 1930 public void handleMessage(Message msg) { 1931 NetworkInfo info; 1932 switch (msg.what) { 1933 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1934 handleAsyncChannelHalfConnect(msg); 1935 break; 1936 } 1937 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1938 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1939 if (nai != null) nai.asyncChannel.disconnect(); 1940 break; 1941 } 1942 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1943 handleAsyncChannelDisconnected(msg); 1944 break; 1945 } 1946 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1947 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1948 if (nai == null) { 1949 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1950 } else { 1951 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1952 } 1953 break; 1954 } 1955 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1956 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1957 if (nai == null) { 1958 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1959 } else { 1960 if (VDBG) { 1961 log("Update of LinkProperties for " + nai.name() + 1962 "; created=" + nai.created); 1963 } 1964 LinkProperties oldLp = nai.linkProperties; 1965 synchronized (nai) { 1966 nai.linkProperties = (LinkProperties)msg.obj; 1967 } 1968 if (nai.created) updateLinkProperties(nai, oldLp); 1969 } 1970 break; 1971 } 1972 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1973 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1974 if (nai == null) { 1975 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1976 break; 1977 } 1978 info = (NetworkInfo) msg.obj; 1979 updateNetworkInfo(nai, info); 1980 break; 1981 } 1982 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1983 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1984 if (nai == null) { 1985 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1986 break; 1987 } 1988 Integer score = (Integer) msg.obj; 1989 if (score != null) updateNetworkScore(nai, score.intValue()); 1990 break; 1991 } 1992 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1993 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1994 if (nai == null) { 1995 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1996 break; 1997 } 1998 try { 1999 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2000 } catch (Exception e) { 2001 // Never crash! 2002 loge("Exception in addVpnUidRanges: " + e); 2003 } 2004 break; 2005 } 2006 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 2007 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2008 if (nai == null) { 2009 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 2010 break; 2011 } 2012 try { 2013 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2014 } catch (Exception e) { 2015 // Never crash! 2016 loge("Exception in removeVpnUidRanges: " + e); 2017 } 2018 break; 2019 } 2020 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 2021 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2022 if (nai == null) { 2023 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 2024 break; 2025 } 2026 if (nai.created && !nai.networkMisc.explicitlySelected) { 2027 loge("ERROR: created network explicitly selected."); 2028 } 2029 nai.networkMisc.explicitlySelected = true; 2030 break; 2031 } 2032 case NetworkMonitor.EVENT_NETWORK_TESTED: { 2033 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2034 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_VALIDATED")) { 2035 boolean valid = (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2036 if (valid) { 2037 if (DBG) log("Validated " + nai.name()); 2038 if (!nai.validated) { 2039 nai.validated = true; 2040 rematchNetworkAndRequests(nai, NascentState.JUST_VALIDATED, 2041 ReapUnvalidatedNetworks.REAP); 2042 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2043 sendUpdatedScoreToFactories(nai); 2044 } 2045 } 2046 updateInetCondition(nai, valid); 2047 // Let the NetworkAgent know the state of its network 2048 nai.asyncChannel.sendMessage( 2049 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2050 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2051 0, null); 2052 } 2053 break; 2054 } 2055 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2056 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2057 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 2058 handleLingerComplete(nai); 2059 } 2060 break; 2061 } 2062 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2063 if (msg.arg1 == 0) { 2064 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 2065 } else { 2066 NetworkAgentInfo nai = null; 2067 synchronized (mNetworkForNetId) { 2068 nai = mNetworkForNetId.get(msg.arg2); 2069 } 2070 if (nai == null) { 2071 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2072 break; 2073 } 2074 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 2075 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 2076 } 2077 break; 2078 } 2079 case NetworkStateTracker.EVENT_STATE_CHANGED: { 2080 info = (NetworkInfo) msg.obj; 2081 NetworkInfo.State state = info.getState(); 2082 2083 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 2084 (state == NetworkInfo.State.DISCONNECTED) || 2085 (state == NetworkInfo.State.SUSPENDED)) { 2086 log("ConnectivityChange for " + 2087 info.getTypeName() + ": " + 2088 state + "/" + info.getDetailedState()); 2089 } 2090 2091 EventLogTags.writeConnectivityStateChanged( 2092 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 2093 2094 if (info.isConnectedToProvisioningNetwork()) { 2095 /** 2096 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 2097 * for now its an in between network, its a network that 2098 * is actually a default network but we don't want it to be 2099 * announced as such to keep background applications from 2100 * trying to use it. It turns out that some still try so we 2101 * take the additional step of clearing any default routes 2102 * to the link that may have incorrectly setup by the lower 2103 * levels. 2104 */ 2105 LinkProperties lp = getLinkPropertiesForType(info.getType()); 2106 if (DBG) { 2107 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 2108 } 2109 2110 // Clear any default routes setup by the radio so 2111 // any activity by applications trying to use this 2112 // connection will fail until the provisioning network 2113 // is enabled. 2114 /* 2115 for (RouteInfo r : lp.getRoutes()) { 2116 removeRoute(lp, r, TO_DEFAULT_TABLE, 2117 mNetTrackers[info.getType()].getNetwork().netId); 2118 } 2119 */ 2120 } else if (state == NetworkInfo.State.DISCONNECTED) { 2121 } else if (state == NetworkInfo.State.SUSPENDED) { 2122 } else if (state == NetworkInfo.State.CONNECTED) { 2123 // handleConnect(info); 2124 } 2125 notifyLockdownVpn(null); 2126 break; 2127 } 2128 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 2129 info = (NetworkInfo) msg.obj; 2130 // TODO: Temporary allowing network configuration 2131 // change not resetting sockets. 2132 // @see bug/4455071 2133 /* 2134 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 2135 false); 2136 */ 2137 break; 2138 } 2139 } 2140 } 2141 } 2142 2143 // Cancel any lingering so the linger timeout doesn't teardown a network. 2144 // This should be called when a network begins satisfying a NetworkRequest. 2145 // Note: depending on what state the NetworkMonitor is in (e.g., 2146 // if it's awaiting captive portal login, or if validation failed), this 2147 // may trigger a re-evaluation of the network. 2148 private void unlinger(NetworkAgentInfo nai) { 2149 if (VDBG) log("Canceling linger of " + nai.name()); 2150 nai.networkLingered.clear(); 2151 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2152 } 2153 2154 private void handleAsyncChannelHalfConnect(Message msg) { 2155 AsyncChannel ac = (AsyncChannel) msg.obj; 2156 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2157 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2158 if (VDBG) log("NetworkFactory connected"); 2159 // A network factory has connected. Send it all current NetworkRequests. 2160 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2161 if (nri.isRequest == false) continue; 2162 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2163 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2164 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2165 } 2166 } else { 2167 loge("Error connecting NetworkFactory"); 2168 mNetworkFactoryInfos.remove(msg.obj); 2169 } 2170 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2171 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2172 if (VDBG) log("NetworkAgent connected"); 2173 // A network agent has requested a connection. Establish the connection. 2174 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2175 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2176 } else { 2177 loge("Error connecting NetworkAgent"); 2178 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2179 if (nai != null) { 2180 synchronized (mNetworkForNetId) { 2181 mNetworkForNetId.remove(nai.network.netId); 2182 } 2183 // Just in case. 2184 mLegacyTypeTracker.remove(nai); 2185 } 2186 } 2187 } 2188 } 2189 2190 private void handleAsyncChannelDisconnected(Message msg) { 2191 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2192 if (nai != null) { 2193 if (DBG) { 2194 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2195 } 2196 // A network agent has disconnected. 2197 if (nai.created) { 2198 // Tell netd to clean up the configuration for this network 2199 // (routing rules, DNS, etc). 2200 try { 2201 mNetd.removeNetwork(nai.network.netId); 2202 } catch (Exception e) { 2203 loge("Exception removing network: " + e); 2204 } 2205 } 2206 // TODO - if we move the logic to the network agent (have them disconnect 2207 // because they lost all their requests or because their score isn't good) 2208 // then they would disconnect organically, report their new state and then 2209 // disconnect the channel. 2210 if (nai.networkInfo.isConnected()) { 2211 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2212 null, null); 2213 } 2214 if (isDefaultNetwork(nai)) { 2215 mDefaultInetConditionPublished = 0; 2216 } 2217 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2218 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2219 mNetworkAgentInfos.remove(msg.replyTo); 2220 updateClat(null, nai.linkProperties, nai); 2221 mLegacyTypeTracker.remove(nai); 2222 synchronized (mNetworkForNetId) { 2223 mNetworkForNetId.remove(nai.network.netId); 2224 } 2225 // Since we've lost the network, go through all the requests that 2226 // it was satisfying and see if any other factory can satisfy them. 2227 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2228 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2229 for (int i = 0; i < nai.networkRequests.size(); i++) { 2230 NetworkRequest request = nai.networkRequests.valueAt(i); 2231 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2232 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2233 if (DBG) { 2234 log("Checking for replacement network to handle request " + request ); 2235 } 2236 mNetworkForRequestId.remove(request.requestId); 2237 sendUpdatedScoreToFactories(request, 0); 2238 NetworkAgentInfo alternative = null; 2239 for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) { 2240 if (existing.satisfies(request) && 2241 (alternative == null || 2242 alternative.getCurrentScore() < existing.getCurrentScore())) { 2243 alternative = existing; 2244 } 2245 } 2246 if (alternative != null) { 2247 if (DBG) log(" found replacement in " + alternative.name()); 2248 if (!toActivate.contains(alternative)) { 2249 toActivate.add(alternative); 2250 } 2251 } 2252 } 2253 } 2254 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2255 removeDataActivityTracking(nai); 2256 notifyLockdownVpn(nai); 2257 requestNetworkTransitionWakelock(nai.name()); 2258 } 2259 for (NetworkAgentInfo networkToActivate : toActivate) { 2260 unlinger(networkToActivate); 2261 rematchNetworkAndRequests(networkToActivate, NascentState.NOT_JUST_VALIDATED, 2262 ReapUnvalidatedNetworks.DONT_REAP); 2263 } 2264 } 2265 } 2266 2267 // If this method proves to be too slow then we can maintain a separate 2268 // pendingIntent => NetworkRequestInfo map. 2269 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2270 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2271 Intent intent = pendingIntent.getIntent(); 2272 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2273 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2274 if (existingPendingIntent != null && 2275 existingPendingIntent.getIntent().filterEquals(intent)) { 2276 return entry.getValue(); 2277 } 2278 } 2279 return null; 2280 } 2281 2282 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2283 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2284 2285 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2286 if (existingRequest != null) { // remove the existing request. 2287 if (DBG) log("Replacing " + existingRequest.request + " with " 2288 + nri.request + " because their intents matched."); 2289 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2290 } 2291 handleRegisterNetworkRequest(msg); 2292 } 2293 2294 private void handleRegisterNetworkRequest(Message msg) { 2295 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2296 2297 mNetworkRequests.put(nri.request, nri); 2298 2299 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2300 2301 // Check for the best currently alive network that satisfies this request 2302 NetworkAgentInfo bestNetwork = null; 2303 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2304 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2305 if (network.satisfies(nri.request)) { 2306 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2307 if (!nri.isRequest) { 2308 // Not setting bestNetwork here as a listening NetworkRequest may be 2309 // satisfied by multiple Networks. Instead the request is added to 2310 // each satisfying Network and notified about each. 2311 network.addRequest(nri.request); 2312 notifyNetworkCallback(network, nri); 2313 } else if (bestNetwork == null || 2314 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2315 bestNetwork = network; 2316 } 2317 } 2318 } 2319 if (bestNetwork != null) { 2320 if (DBG) log("using " + bestNetwork.name()); 2321 unlinger(bestNetwork); 2322 bestNetwork.addRequest(nri.request); 2323 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2324 notifyNetworkCallback(bestNetwork, nri); 2325 if (nri.request.legacyType != TYPE_NONE) { 2326 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2327 } 2328 } 2329 2330 if (nri.isRequest) { 2331 if (DBG) log("sending new NetworkRequest to factories"); 2332 final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore(); 2333 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2334 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2335 0, nri.request); 2336 } 2337 } 2338 } 2339 2340 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2341 int callingUid) { 2342 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2343 if (nri != null) { 2344 handleReleaseNetworkRequest(nri.request, callingUid); 2345 } 2346 } 2347 2348 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2349 NetworkRequestInfo nri = mNetworkRequests.get(request); 2350 if (nri != null) { 2351 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2352 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2353 return; 2354 } 2355 if (DBG) log("releasing NetworkRequest " + request); 2356 nri.unlinkDeathRecipient(); 2357 mNetworkRequests.remove(request); 2358 if (nri.isRequest) { 2359 // Find all networks that are satisfying this request and remove the request 2360 // from their request lists. 2361 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2362 if (nai.networkRequests.get(nri.request.requestId) != null) { 2363 nai.networkRequests.remove(nri.request.requestId); 2364 if (DBG) { 2365 log(" Removing from current network " + nai.name() + 2366 ", leaving " + nai.networkRequests.size() + 2367 " requests."); 2368 } 2369 // check if has any requests remaining and if not, 2370 // disconnect (unless it's a VPN). 2371 boolean keep = nai.isVPN(); 2372 for (int i = 0; i < nai.networkRequests.size() && !keep; i++) { 2373 NetworkRequest r = nai.networkRequests.valueAt(i); 2374 if (isRequest(r)) keep = true; 2375 } 2376 if (!keep) { 2377 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2378 nai.asyncChannel.disconnect(); 2379 } 2380 } 2381 } 2382 2383 // Maintain the illusion. When this request arrived, we might have pretended 2384 // that a network connected to serve it, even though the network was already 2385 // connected. Now that this request has gone away, we might have to pretend 2386 // that the network disconnected. LegacyTypeTracker will generate that 2387 // phantom disconnect for this type. 2388 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2389 if (nai != null) { 2390 mNetworkForRequestId.remove(nri.request.requestId); 2391 if (nri.request.legacyType != TYPE_NONE) { 2392 mLegacyTypeTracker.remove(nri.request.legacyType, nai); 2393 } 2394 } 2395 2396 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2397 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2398 nri.request); 2399 } 2400 } else { 2401 // listens don't have a singular affectedNetwork. Check all networks to see 2402 // if this listen request applies and remove it. 2403 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2404 nai.networkRequests.remove(nri.request.requestId); 2405 } 2406 } 2407 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2408 } 2409 } 2410 2411 private class InternalHandler extends Handler { 2412 public InternalHandler(Looper looper) { 2413 super(looper); 2414 } 2415 2416 @Override 2417 public void handleMessage(Message msg) { 2418 switch (msg.what) { 2419 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2420 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2421 String causedBy = null; 2422 synchronized (ConnectivityService.this) { 2423 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2424 mNetTransitionWakeLock.isHeld()) { 2425 mNetTransitionWakeLock.release(); 2426 causedBy = mNetTransitionWakeLockCausedBy; 2427 } else { 2428 break; 2429 } 2430 } 2431 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2432 log("Failed to find a new network - expiring NetTransition Wakelock"); 2433 } else { 2434 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2435 " cleared because we found a replacement network"); 2436 } 2437 break; 2438 } 2439 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2440 handleDeprecatedGlobalHttpProxy(); 2441 break; 2442 } 2443 case EVENT_SET_DEPENDENCY_MET: { 2444 boolean met = (msg.arg1 == ENABLED); 2445 handleSetDependencyMet(msg.arg2, met); 2446 break; 2447 } 2448 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2449 Intent intent = (Intent)msg.obj; 2450 sendStickyBroadcast(intent); 2451 break; 2452 } 2453 case EVENT_SET_POLICY_DATA_ENABLE: { 2454 final int networkType = msg.arg1; 2455 final boolean enabled = msg.arg2 == ENABLED; 2456 handleSetPolicyDataEnable(networkType, enabled); 2457 break; 2458 } 2459 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 2460 int tag = mEnableFailFastMobileDataTag.get(); 2461 if (msg.arg1 == tag) { 2462 MobileDataStateTracker mobileDst = 2463 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 2464 if (mobileDst != null) { 2465 mobileDst.setEnableFailFastMobileData(msg.arg2); 2466 } 2467 } else { 2468 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 2469 + " != tag:" + tag); 2470 } 2471 break; 2472 } 2473 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 2474 handleNetworkSamplingTimeout(); 2475 break; 2476 } 2477 case EVENT_PROXY_HAS_CHANGED: { 2478 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2479 break; 2480 } 2481 case EVENT_REGISTER_NETWORK_FACTORY: { 2482 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2483 break; 2484 } 2485 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2486 handleUnregisterNetworkFactory((Messenger)msg.obj); 2487 break; 2488 } 2489 case EVENT_REGISTER_NETWORK_AGENT: { 2490 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2491 break; 2492 } 2493 case EVENT_REGISTER_NETWORK_REQUEST: 2494 case EVENT_REGISTER_NETWORK_LISTENER: { 2495 handleRegisterNetworkRequest(msg); 2496 break; 2497 } 2498 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: { 2499 handleRegisterNetworkRequestWithIntent(msg); 2500 break; 2501 } 2502 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2503 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2504 break; 2505 } 2506 case EVENT_RELEASE_NETWORK_REQUEST: { 2507 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2508 break; 2509 } 2510 case EVENT_SYSTEM_READY: { 2511 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2512 nai.networkMonitor.systemReady = true; 2513 } 2514 break; 2515 } 2516 } 2517 } 2518 } 2519 2520 // javadoc from interface 2521 public int tether(String iface) { 2522 ConnectivityManager.enforceTetherChangePermission(mContext); 2523 if (isTetheringSupported()) { 2524 return mTethering.tether(iface); 2525 } else { 2526 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2527 } 2528 } 2529 2530 // javadoc from interface 2531 public int untether(String iface) { 2532 ConnectivityManager.enforceTetherChangePermission(mContext); 2533 2534 if (isTetheringSupported()) { 2535 return mTethering.untether(iface); 2536 } else { 2537 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2538 } 2539 } 2540 2541 // javadoc from interface 2542 public int getLastTetherError(String iface) { 2543 enforceTetherAccessPermission(); 2544 2545 if (isTetheringSupported()) { 2546 return mTethering.getLastTetherError(iface); 2547 } else { 2548 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2549 } 2550 } 2551 2552 // TODO - proper iface API for selection by property, inspection, etc 2553 public String[] getTetherableUsbRegexs() { 2554 enforceTetherAccessPermission(); 2555 if (isTetheringSupported()) { 2556 return mTethering.getTetherableUsbRegexs(); 2557 } else { 2558 return new String[0]; 2559 } 2560 } 2561 2562 public String[] getTetherableWifiRegexs() { 2563 enforceTetherAccessPermission(); 2564 if (isTetheringSupported()) { 2565 return mTethering.getTetherableWifiRegexs(); 2566 } else { 2567 return new String[0]; 2568 } 2569 } 2570 2571 public String[] getTetherableBluetoothRegexs() { 2572 enforceTetherAccessPermission(); 2573 if (isTetheringSupported()) { 2574 return mTethering.getTetherableBluetoothRegexs(); 2575 } else { 2576 return new String[0]; 2577 } 2578 } 2579 2580 public int setUsbTethering(boolean enable) { 2581 ConnectivityManager.enforceTetherChangePermission(mContext); 2582 if (isTetheringSupported()) { 2583 return mTethering.setUsbTethering(enable); 2584 } else { 2585 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2586 } 2587 } 2588 2589 // TODO - move iface listing, queries, etc to new module 2590 // javadoc from interface 2591 public String[] getTetherableIfaces() { 2592 enforceTetherAccessPermission(); 2593 return mTethering.getTetherableIfaces(); 2594 } 2595 2596 public String[] getTetheredIfaces() { 2597 enforceTetherAccessPermission(); 2598 return mTethering.getTetheredIfaces(); 2599 } 2600 2601 public String[] getTetheringErroredIfaces() { 2602 enforceTetherAccessPermission(); 2603 return mTethering.getErroredIfaces(); 2604 } 2605 2606 public String[] getTetheredDhcpRanges() { 2607 enforceConnectivityInternalPermission(); 2608 return mTethering.getTetheredDhcpRanges(); 2609 } 2610 2611 // if ro.tether.denied = true we default to no tethering 2612 // gservices could set the secure setting to 1 though to enable it on a build where it 2613 // had previously been turned off. 2614 public boolean isTetheringSupported() { 2615 enforceTetherAccessPermission(); 2616 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2617 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2618 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2619 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2620 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2621 mTethering.getTetherableWifiRegexs().length != 0 || 2622 mTethering.getTetherableBluetoothRegexs().length != 0) && 2623 mTethering.getUpstreamIfaceTypes().length != 0); 2624 } 2625 2626 // Called when we lose the default network and have no replacement yet. 2627 // This will automatically be cleared after X seconds or a new default network 2628 // becomes CONNECTED, whichever happens first. The timer is started by the 2629 // first caller and not restarted by subsequent callers. 2630 private void requestNetworkTransitionWakelock(String forWhom) { 2631 int serialNum = 0; 2632 synchronized (this) { 2633 if (mNetTransitionWakeLock.isHeld()) return; 2634 serialNum = ++mNetTransitionWakeLockSerialNumber; 2635 mNetTransitionWakeLock.acquire(); 2636 mNetTransitionWakeLockCausedBy = forWhom; 2637 } 2638 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2639 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2640 mNetTransitionWakeLockTimeout); 2641 return; 2642 } 2643 2644 // 100 percent is full good, 0 is full bad. 2645 public void reportInetCondition(int networkType, int percentage) { 2646 if (percentage > 50) return; // don't handle good network reports 2647 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2648 if (nai != null) reportBadNetwork(nai.network); 2649 } 2650 2651 public void reportBadNetwork(Network network) { 2652 enforceAccessPermission(); 2653 enforceInternetPermission(); 2654 2655 if (network == null) return; 2656 2657 final int uid = Binder.getCallingUid(); 2658 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2659 if (nai == null) return; 2660 if (DBG) log("reportBadNetwork(" + nai.name() + ") by " + uid); 2661 synchronized (nai) { 2662 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2663 // which isn't meant to work on uncreated networks. 2664 if (!nai.created) return; 2665 2666 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2667 2668 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2669 } 2670 } 2671 2672 public ProxyInfo getProxy() { 2673 // this information is already available as a world read/writable jvm property 2674 // so this API change wouldn't have a benifit. It also breaks the passing 2675 // of proxy info to all the JVMs. 2676 // enforceAccessPermission(); 2677 synchronized (mProxyLock) { 2678 ProxyInfo ret = mGlobalProxy; 2679 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2680 return ret; 2681 } 2682 } 2683 2684 public void setGlobalProxy(ProxyInfo proxyProperties) { 2685 enforceConnectivityInternalPermission(); 2686 2687 synchronized (mProxyLock) { 2688 if (proxyProperties == mGlobalProxy) return; 2689 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2690 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2691 2692 String host = ""; 2693 int port = 0; 2694 String exclList = ""; 2695 String pacFileUrl = ""; 2696 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2697 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2698 if (!proxyProperties.isValid()) { 2699 if (DBG) 2700 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2701 return; 2702 } 2703 mGlobalProxy = new ProxyInfo(proxyProperties); 2704 host = mGlobalProxy.getHost(); 2705 port = mGlobalProxy.getPort(); 2706 exclList = mGlobalProxy.getExclusionListAsString(); 2707 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2708 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2709 } 2710 } else { 2711 mGlobalProxy = null; 2712 } 2713 ContentResolver res = mContext.getContentResolver(); 2714 final long token = Binder.clearCallingIdentity(); 2715 try { 2716 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2717 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2718 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2719 exclList); 2720 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2721 } finally { 2722 Binder.restoreCallingIdentity(token); 2723 } 2724 2725 if (mGlobalProxy == null) { 2726 proxyProperties = mDefaultProxy; 2727 } 2728 sendProxyBroadcast(proxyProperties); 2729 } 2730 } 2731 2732 private void loadGlobalProxy() { 2733 ContentResolver res = mContext.getContentResolver(); 2734 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2735 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2736 String exclList = Settings.Global.getString(res, 2737 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2738 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2739 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2740 ProxyInfo proxyProperties; 2741 if (!TextUtils.isEmpty(pacFileUrl)) { 2742 proxyProperties = new ProxyInfo(pacFileUrl); 2743 } else { 2744 proxyProperties = new ProxyInfo(host, port, exclList); 2745 } 2746 if (!proxyProperties.isValid()) { 2747 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2748 return; 2749 } 2750 2751 synchronized (mProxyLock) { 2752 mGlobalProxy = proxyProperties; 2753 } 2754 } 2755 } 2756 2757 public ProxyInfo getGlobalProxy() { 2758 // this information is already available as a world read/writable jvm property 2759 // so this API change wouldn't have a benifit. It also breaks the passing 2760 // of proxy info to all the JVMs. 2761 // enforceAccessPermission(); 2762 synchronized (mProxyLock) { 2763 return mGlobalProxy; 2764 } 2765 } 2766 2767 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2768 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2769 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2770 proxy = null; 2771 } 2772 synchronized (mProxyLock) { 2773 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2774 if (mDefaultProxy == proxy) return; // catches repeated nulls 2775 if (proxy != null && !proxy.isValid()) { 2776 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2777 return; 2778 } 2779 2780 // This call could be coming from the PacManager, containing the port of the local 2781 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2782 // global (to get the correct local port), and send a broadcast. 2783 // TODO: Switch PacManager to have its own message to send back rather than 2784 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2785 if ((mGlobalProxy != null) && (proxy != null) 2786 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2787 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2788 mGlobalProxy = proxy; 2789 sendProxyBroadcast(mGlobalProxy); 2790 return; 2791 } 2792 mDefaultProxy = proxy; 2793 2794 if (mGlobalProxy != null) return; 2795 if (!mDefaultProxyDisabled) { 2796 sendProxyBroadcast(proxy); 2797 } 2798 } 2799 } 2800 2801 private void handleDeprecatedGlobalHttpProxy() { 2802 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2803 Settings.Global.HTTP_PROXY); 2804 if (!TextUtils.isEmpty(proxy)) { 2805 String data[] = proxy.split(":"); 2806 if (data.length == 0) { 2807 return; 2808 } 2809 2810 String proxyHost = data[0]; 2811 int proxyPort = 8080; 2812 if (data.length > 1) { 2813 try { 2814 proxyPort = Integer.parseInt(data[1]); 2815 } catch (NumberFormatException e) { 2816 return; 2817 } 2818 } 2819 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2820 setGlobalProxy(p); 2821 } 2822 } 2823 2824 private void sendProxyBroadcast(ProxyInfo proxy) { 2825 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2826 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2827 if (DBG) log("sending Proxy Broadcast for " + proxy); 2828 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2829 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2830 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2831 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2832 final long ident = Binder.clearCallingIdentity(); 2833 try { 2834 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2835 } finally { 2836 Binder.restoreCallingIdentity(ident); 2837 } 2838 } 2839 2840 private static class SettingsObserver extends ContentObserver { 2841 private int mWhat; 2842 private Handler mHandler; 2843 SettingsObserver(Handler handler, int what) { 2844 super(handler); 2845 mHandler = handler; 2846 mWhat = what; 2847 } 2848 2849 void observe(Context context) { 2850 ContentResolver resolver = context.getContentResolver(); 2851 resolver.registerContentObserver(Settings.Global.getUriFor( 2852 Settings.Global.HTTP_PROXY), false, this); 2853 } 2854 2855 @Override 2856 public void onChange(boolean selfChange) { 2857 mHandler.obtainMessage(mWhat).sendToTarget(); 2858 } 2859 } 2860 2861 private static void log(String s) { 2862 Slog.d(TAG, s); 2863 } 2864 2865 private static void loge(String s) { 2866 Slog.e(TAG, s); 2867 } 2868 2869 private static <T> T checkNotNull(T value, String message) { 2870 if (value == null) { 2871 throw new NullPointerException(message); 2872 } 2873 return value; 2874 } 2875 2876 /** 2877 * Prepare for a VPN application. 2878 * Permissions are checked in Vpn class. 2879 * @hide 2880 */ 2881 @Override 2882 public boolean prepareVpn(String oldPackage, String newPackage) { 2883 throwIfLockdownEnabled(); 2884 int user = UserHandle.getUserId(Binder.getCallingUid()); 2885 synchronized(mVpns) { 2886 return mVpns.get(user).prepare(oldPackage, newPackage); 2887 } 2888 } 2889 2890 /** 2891 * Set whether the current VPN package has the ability to launch VPNs without 2892 * user intervention. This method is used by system-privileged apps. 2893 * Permissions are checked in Vpn class. 2894 * @hide 2895 */ 2896 @Override 2897 public void setVpnPackageAuthorization(boolean authorized) { 2898 int user = UserHandle.getUserId(Binder.getCallingUid()); 2899 synchronized(mVpns) { 2900 mVpns.get(user).setPackageAuthorization(authorized); 2901 } 2902 } 2903 2904 /** 2905 * Configure a TUN interface and return its file descriptor. Parameters 2906 * are encoded and opaque to this class. This method is used by VpnBuilder 2907 * and not available in ConnectivityManager. Permissions are checked in 2908 * Vpn class. 2909 * @hide 2910 */ 2911 @Override 2912 public ParcelFileDescriptor establishVpn(VpnConfig config) { 2913 throwIfLockdownEnabled(); 2914 int user = UserHandle.getUserId(Binder.getCallingUid()); 2915 synchronized(mVpns) { 2916 return mVpns.get(user).establish(config); 2917 } 2918 } 2919 2920 /** 2921 * Start legacy VPN, controlling native daemons as needed. Creates a 2922 * secondary thread to perform connection work, returning quickly. 2923 */ 2924 @Override 2925 public void startLegacyVpn(VpnProfile profile) { 2926 throwIfLockdownEnabled(); 2927 final LinkProperties egress = getActiveLinkProperties(); 2928 if (egress == null) { 2929 throw new IllegalStateException("Missing active network connection"); 2930 } 2931 int user = UserHandle.getUserId(Binder.getCallingUid()); 2932 synchronized(mVpns) { 2933 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 2934 } 2935 } 2936 2937 /** 2938 * Return the information of the ongoing legacy VPN. This method is used 2939 * by VpnSettings and not available in ConnectivityManager. Permissions 2940 * are checked in Vpn class. 2941 * @hide 2942 */ 2943 @Override 2944 public LegacyVpnInfo getLegacyVpnInfo() { 2945 throwIfLockdownEnabled(); 2946 int user = UserHandle.getUserId(Binder.getCallingUid()); 2947 synchronized(mVpns) { 2948 return mVpns.get(user).getLegacyVpnInfo(); 2949 } 2950 } 2951 2952 /** 2953 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 2954 * not available in ConnectivityManager. 2955 * Permissions are checked in Vpn class. 2956 * @hide 2957 */ 2958 @Override 2959 public VpnConfig getVpnConfig() { 2960 int user = UserHandle.getUserId(Binder.getCallingUid()); 2961 synchronized(mVpns) { 2962 return mVpns.get(user).getVpnConfig(); 2963 } 2964 } 2965 2966 @Override 2967 public boolean updateLockdownVpn() { 2968 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 2969 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 2970 return false; 2971 } 2972 2973 // Tear down existing lockdown if profile was removed 2974 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 2975 if (mLockdownEnabled) { 2976 if (!mKeyStore.isUnlocked()) { 2977 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 2978 return false; 2979 } 2980 2981 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 2982 final VpnProfile profile = VpnProfile.decode( 2983 profileName, mKeyStore.get(Credentials.VPN + profileName)); 2984 int user = UserHandle.getUserId(Binder.getCallingUid()); 2985 synchronized(mVpns) { 2986 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 2987 profile)); 2988 } 2989 } else { 2990 setLockdownTracker(null); 2991 } 2992 2993 return true; 2994 } 2995 2996 /** 2997 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 2998 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 2999 */ 3000 private void setLockdownTracker(LockdownVpnTracker tracker) { 3001 // Shutdown any existing tracker 3002 final LockdownVpnTracker existing = mLockdownTracker; 3003 mLockdownTracker = null; 3004 if (existing != null) { 3005 existing.shutdown(); 3006 } 3007 3008 try { 3009 if (tracker != null) { 3010 mNetd.setFirewallEnabled(true); 3011 mNetd.setFirewallInterfaceRule("lo", true); 3012 mLockdownTracker = tracker; 3013 mLockdownTracker.init(); 3014 } else { 3015 mNetd.setFirewallEnabled(false); 3016 } 3017 } catch (RemoteException e) { 3018 // ignored; NMS lives inside system_server 3019 } 3020 } 3021 3022 private void throwIfLockdownEnabled() { 3023 if (mLockdownEnabled) { 3024 throw new IllegalStateException("Unavailable in lockdown mode"); 3025 } 3026 } 3027 3028 public void supplyMessenger(int networkType, Messenger messenger) { 3029 enforceConnectivityInternalPermission(); 3030 3031 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 3032 mNetTrackers[networkType].supplyMessenger(messenger); 3033 } 3034 } 3035 3036 public int findConnectionTypeForIface(String iface) { 3037 enforceConnectivityInternalPermission(); 3038 3039 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 3040 3041 synchronized(mNetworkForNetId) { 3042 for (int i = 0; i < mNetworkForNetId.size(); i++) { 3043 NetworkAgentInfo nai = mNetworkForNetId.valueAt(i); 3044 LinkProperties lp = nai.linkProperties; 3045 if (lp != null && iface.equals(lp.getInterfaceName()) && nai.networkInfo != null) { 3046 return nai.networkInfo.getType(); 3047 } 3048 } 3049 } 3050 return ConnectivityManager.TYPE_NONE; 3051 } 3052 3053 /** 3054 * Have mobile data fail fast if enabled. 3055 * 3056 * @param enabled DctConstants.ENABLED/DISABLED 3057 */ 3058 private void setEnableFailFastMobileData(int enabled) { 3059 int tag; 3060 3061 if (enabled == DctConstants.ENABLED) { 3062 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 3063 } else { 3064 tag = mEnableFailFastMobileDataTag.get(); 3065 } 3066 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 3067 enabled)); 3068 } 3069 3070 @Override 3071 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3072 // TODO: Remove? Any reason to trigger a provisioning check? 3073 return -1; 3074 } 3075 3076 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3077 private volatile boolean mIsNotificationVisible = false; 3078 3079 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3080 if (DBG) { 3081 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3082 + " action=" + action); 3083 } 3084 Intent intent = new Intent(action); 3085 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3086 // Concatenate the range of types onto the range of NetIDs. 3087 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3088 setProvNotificationVisibleIntent(visible, id, networkType, null, pendingIntent); 3089 } 3090 3091 /** 3092 * Show or hide network provisioning notificaitons. 3093 * 3094 * @param id an identifier that uniquely identifies this notification. This must match 3095 * between show and hide calls. We use the NetID value but for legacy callers 3096 * we concatenate the range of types with the range of NetIDs. 3097 */ 3098 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 3099 String extraInfo, PendingIntent intent) { 3100 if (DBG) { 3101 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 3102 networkType + " extraInfo=" + extraInfo); 3103 } 3104 3105 Resources r = Resources.getSystem(); 3106 NotificationManager notificationManager = (NotificationManager) mContext 3107 .getSystemService(Context.NOTIFICATION_SERVICE); 3108 3109 if (visible) { 3110 CharSequence title; 3111 CharSequence details; 3112 int icon; 3113 Notification notification = new Notification(); 3114 switch (networkType) { 3115 case ConnectivityManager.TYPE_WIFI: 3116 title = r.getString(R.string.wifi_available_sign_in, 0); 3117 details = r.getString(R.string.network_available_sign_in_detailed, 3118 extraInfo); 3119 icon = R.drawable.stat_notify_wifi_in_range; 3120 break; 3121 case ConnectivityManager.TYPE_MOBILE: 3122 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3123 title = r.getString(R.string.network_available_sign_in, 0); 3124 // TODO: Change this to pull from NetworkInfo once a printable 3125 // name has been added to it 3126 details = mTelephonyManager.getNetworkOperatorName(); 3127 icon = R.drawable.stat_notify_rssi_in_range; 3128 break; 3129 default: 3130 title = r.getString(R.string.network_available_sign_in, 0); 3131 details = r.getString(R.string.network_available_sign_in_detailed, 3132 extraInfo); 3133 icon = R.drawable.stat_notify_rssi_in_range; 3134 break; 3135 } 3136 3137 notification.when = 0; 3138 notification.icon = icon; 3139 notification.flags = Notification.FLAG_AUTO_CANCEL; 3140 notification.tickerText = title; 3141 notification.color = mContext.getResources().getColor( 3142 com.android.internal.R.color.system_notification_accent_color); 3143 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3144 notification.contentIntent = intent; 3145 3146 try { 3147 notificationManager.notify(NOTIFICATION_ID, id, notification); 3148 } catch (NullPointerException npe) { 3149 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 3150 npe.printStackTrace(); 3151 } 3152 } else { 3153 try { 3154 notificationManager.cancel(NOTIFICATION_ID, id); 3155 } catch (NullPointerException npe) { 3156 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 3157 npe.printStackTrace(); 3158 } 3159 } 3160 mIsNotificationVisible = visible; 3161 } 3162 3163 /** Location to an updatable file listing carrier provisioning urls. 3164 * An example: 3165 * 3166 * <?xml version="1.0" encoding="utf-8"?> 3167 * <provisioningUrls> 3168 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3169 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3170 * </provisioningUrls> 3171 */ 3172 private static final String PROVISIONING_URL_PATH = 3173 "/data/misc/radio/provisioning_urls.xml"; 3174 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3175 3176 /** XML tag for root element. */ 3177 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3178 /** XML tag for individual url */ 3179 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3180 /** XML tag for redirected url */ 3181 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3182 /** XML attribute for mcc */ 3183 private static final String ATTR_MCC = "mcc"; 3184 /** XML attribute for mnc */ 3185 private static final String ATTR_MNC = "mnc"; 3186 3187 private static final int REDIRECTED_PROVISIONING = 1; 3188 private static final int PROVISIONING = 2; 3189 3190 private String getProvisioningUrlBaseFromFile(int type) { 3191 FileReader fileReader = null; 3192 XmlPullParser parser = null; 3193 Configuration config = mContext.getResources().getConfiguration(); 3194 String tagType; 3195 3196 switch (type) { 3197 case PROVISIONING: 3198 tagType = TAG_PROVISIONING_URL; 3199 break; 3200 case REDIRECTED_PROVISIONING: 3201 tagType = TAG_REDIRECTED_URL; 3202 break; 3203 default: 3204 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3205 type); 3206 } 3207 3208 try { 3209 fileReader = new FileReader(mProvisioningUrlFile); 3210 parser = Xml.newPullParser(); 3211 parser.setInput(fileReader); 3212 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3213 3214 while (true) { 3215 XmlUtils.nextElement(parser); 3216 3217 String element = parser.getName(); 3218 if (element == null) break; 3219 3220 if (element.equals(tagType)) { 3221 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3222 try { 3223 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3224 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3225 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3226 parser.next(); 3227 if (parser.getEventType() == XmlPullParser.TEXT) { 3228 return parser.getText(); 3229 } 3230 } 3231 } 3232 } catch (NumberFormatException e) { 3233 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3234 } 3235 } 3236 } 3237 return null; 3238 } catch (FileNotFoundException e) { 3239 loge("Carrier Provisioning Urls file not found"); 3240 } catch (XmlPullParserException e) { 3241 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3242 } catch (IOException e) { 3243 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3244 } finally { 3245 if (fileReader != null) { 3246 try { 3247 fileReader.close(); 3248 } catch (IOException e) {} 3249 } 3250 } 3251 return null; 3252 } 3253 3254 @Override 3255 public String getMobileRedirectedProvisioningUrl() { 3256 enforceConnectivityInternalPermission(); 3257 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3258 if (TextUtils.isEmpty(url)) { 3259 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3260 } 3261 return url; 3262 } 3263 3264 @Override 3265 public String getMobileProvisioningUrl() { 3266 enforceConnectivityInternalPermission(); 3267 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3268 if (TextUtils.isEmpty(url)) { 3269 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3270 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3271 } else { 3272 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3273 } 3274 // populate the iccid, imei and phone number in the provisioning url. 3275 if (!TextUtils.isEmpty(url)) { 3276 String phoneNumber = mTelephonyManager.getLine1Number(); 3277 if (TextUtils.isEmpty(phoneNumber)) { 3278 phoneNumber = "0000000000"; 3279 } 3280 url = String.format(url, 3281 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3282 mTelephonyManager.getDeviceId() /* IMEI */, 3283 phoneNumber /* Phone numer */); 3284 } 3285 3286 return url; 3287 } 3288 3289 @Override 3290 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3291 String action) { 3292 enforceConnectivityInternalPermission(); 3293 final long ident = Binder.clearCallingIdentity(); 3294 try { 3295 setProvNotificationVisible(visible, networkType, action); 3296 } finally { 3297 Binder.restoreCallingIdentity(ident); 3298 } 3299 } 3300 3301 @Override 3302 public void setAirplaneMode(boolean enable) { 3303 enforceConnectivityInternalPermission(); 3304 final long ident = Binder.clearCallingIdentity(); 3305 try { 3306 final ContentResolver cr = mContext.getContentResolver(); 3307 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3308 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3309 intent.putExtra("state", enable); 3310 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3311 } finally { 3312 Binder.restoreCallingIdentity(ident); 3313 } 3314 } 3315 3316 private void onUserStart(int userId) { 3317 synchronized(mVpns) { 3318 Vpn userVpn = mVpns.get(userId); 3319 if (userVpn != null) { 3320 loge("Starting user already has a VPN"); 3321 return; 3322 } 3323 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, this, userId); 3324 mVpns.put(userId, userVpn); 3325 } 3326 } 3327 3328 private void onUserStop(int userId) { 3329 synchronized(mVpns) { 3330 Vpn userVpn = mVpns.get(userId); 3331 if (userVpn == null) { 3332 loge("Stopping user has no VPN"); 3333 return; 3334 } 3335 mVpns.delete(userId); 3336 } 3337 } 3338 3339 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3340 @Override 3341 public void onReceive(Context context, Intent intent) { 3342 final String action = intent.getAction(); 3343 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3344 if (userId == UserHandle.USER_NULL) return; 3345 3346 if (Intent.ACTION_USER_STARTING.equals(action)) { 3347 onUserStart(userId); 3348 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3349 onUserStop(userId); 3350 } 3351 } 3352 }; 3353 3354 /* Infrastructure for network sampling */ 3355 3356 private void handleNetworkSamplingTimeout() { 3357 3358 if (SAMPLE_DBG) log("Sampling interval elapsed, updating statistics .."); 3359 3360 // initialize list of interfaces .. 3361 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 3362 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 3363 for (NetworkStateTracker tracker : mNetTrackers) { 3364 if (tracker != null) { 3365 String ifaceName = tracker.getNetworkInterfaceName(); 3366 if (ifaceName != null) { 3367 mapIfaceToSample.put(ifaceName, null); 3368 } 3369 } 3370 } 3371 3372 // Read samples for all interfaces 3373 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 3374 3375 // process samples for all networks 3376 for (NetworkStateTracker tracker : mNetTrackers) { 3377 if (tracker != null) { 3378 String ifaceName = tracker.getNetworkInterfaceName(); 3379 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 3380 if (ss != null) { 3381 // end the previous sampling cycle 3382 tracker.stopSampling(ss); 3383 // start a new sampling cycle .. 3384 tracker.startSampling(ss); 3385 } 3386 } 3387 } 3388 3389 if (SAMPLE_DBG) log("Done."); 3390 3391 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 3392 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 3393 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 3394 3395 if (SAMPLE_DBG) { 3396 log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 3397 } 3398 3399 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 3400 } 3401 3402 /** 3403 * Sets a network sampling alarm. 3404 */ 3405 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 3406 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 3407 int alarmType; 3408 if (Resources.getSystem().getBoolean( 3409 R.bool.config_networkSamplingWakesDevice)) { 3410 alarmType = AlarmManager.ELAPSED_REALTIME_WAKEUP; 3411 } else { 3412 alarmType = AlarmManager.ELAPSED_REALTIME; 3413 } 3414 mAlarmManager.set(alarmType, wakeupTime, intent); 3415 } 3416 3417 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3418 new HashMap<Messenger, NetworkFactoryInfo>(); 3419 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3420 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3421 3422 private static class NetworkFactoryInfo { 3423 public final String name; 3424 public final Messenger messenger; 3425 public final AsyncChannel asyncChannel; 3426 3427 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3428 this.name = name; 3429 this.messenger = messenger; 3430 this.asyncChannel = asyncChannel; 3431 } 3432 } 3433 3434 /** 3435 * Tracks info about the requester. 3436 * Also used to notice when the calling process dies so we can self-expire 3437 */ 3438 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3439 static final boolean REQUEST = true; 3440 static final boolean LISTEN = false; 3441 3442 final NetworkRequest request; 3443 final PendingIntent mPendingIntent; 3444 private final IBinder mBinder; 3445 final int mPid; 3446 final int mUid; 3447 final Messenger messenger; 3448 final boolean isRequest; 3449 3450 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3451 request = r; 3452 mPendingIntent = pi; 3453 messenger = null; 3454 mBinder = null; 3455 mPid = getCallingPid(); 3456 mUid = getCallingUid(); 3457 this.isRequest = isRequest; 3458 } 3459 3460 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3461 super(); 3462 messenger = m; 3463 request = r; 3464 mBinder = binder; 3465 mPid = getCallingPid(); 3466 mUid = getCallingUid(); 3467 this.isRequest = isRequest; 3468 mPendingIntent = null; 3469 3470 try { 3471 mBinder.linkToDeath(this, 0); 3472 } catch (RemoteException e) { 3473 binderDied(); 3474 } 3475 } 3476 3477 void unlinkDeathRecipient() { 3478 if (mBinder != null) { 3479 mBinder.unlinkToDeath(this, 0); 3480 } 3481 } 3482 3483 public void binderDied() { 3484 log("ConnectivityService NetworkRequestInfo binderDied(" + 3485 request + ", " + mBinder + ")"); 3486 releaseNetworkRequest(request); 3487 } 3488 3489 public String toString() { 3490 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3491 mPid + " for " + request + 3492 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3493 } 3494 } 3495 3496 @Override 3497 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3498 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3499 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3500 enforceNetworkRequestPermissions(networkCapabilities); 3501 enforceMeteredApnPolicy(networkCapabilities); 3502 3503 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3504 throw new IllegalArgumentException("Bad timeout specified"); 3505 } 3506 3507 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3508 nextNetworkRequestId()); 3509 if (DBG) log("requestNetwork for " + networkRequest); 3510 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3511 NetworkRequestInfo.REQUEST); 3512 3513 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3514 if (timeoutMs > 0) { 3515 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3516 nri), timeoutMs); 3517 } 3518 return networkRequest; 3519 } 3520 3521 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3522 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 3523 == false) { 3524 enforceConnectivityInternalPermission(); 3525 } else { 3526 enforceChangePermission(); 3527 } 3528 } 3529 3530 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3531 // if UID is restricted, don't allow them to bring up metered APNs 3532 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED) 3533 == false) { 3534 final int uidRules; 3535 final int uid = Binder.getCallingUid(); 3536 synchronized(mRulesLock) { 3537 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3538 } 3539 if ((uidRules & RULE_REJECT_METERED) != 0) { 3540 // we could silently fail or we can filter the available nets to only give 3541 // them those they have access to. Chose the more useful 3542 networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED); 3543 } 3544 } 3545 } 3546 3547 @Override 3548 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3549 PendingIntent operation) { 3550 checkNotNull(operation, "PendingIntent cannot be null."); 3551 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3552 enforceNetworkRequestPermissions(networkCapabilities); 3553 enforceMeteredApnPolicy(networkCapabilities); 3554 3555 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3556 nextNetworkRequestId()); 3557 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3558 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3559 NetworkRequestInfo.REQUEST); 3560 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3561 nri)); 3562 return networkRequest; 3563 } 3564 3565 @Override 3566 public void releasePendingNetworkRequest(PendingIntent operation) { 3567 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3568 getCallingUid(), 0, operation)); 3569 } 3570 3571 @Override 3572 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3573 Messenger messenger, IBinder binder) { 3574 enforceAccessPermission(); 3575 3576 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3577 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3578 if (DBG) log("listenForNetwork for " + networkRequest); 3579 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3580 NetworkRequestInfo.LISTEN); 3581 3582 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3583 return networkRequest; 3584 } 3585 3586 @Override 3587 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3588 PendingIntent operation) { 3589 } 3590 3591 @Override 3592 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3593 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3594 0, networkRequest)); 3595 } 3596 3597 @Override 3598 public void registerNetworkFactory(Messenger messenger, String name) { 3599 enforceConnectivityInternalPermission(); 3600 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3601 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3602 } 3603 3604 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3605 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3606 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3607 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3608 } 3609 3610 @Override 3611 public void unregisterNetworkFactory(Messenger messenger) { 3612 enforceConnectivityInternalPermission(); 3613 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3614 } 3615 3616 private void handleUnregisterNetworkFactory(Messenger messenger) { 3617 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3618 if (nfi == null) { 3619 loge("Failed to find Messenger in unregisterNetworkFactory"); 3620 return; 3621 } 3622 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3623 } 3624 3625 /** 3626 * NetworkAgentInfo supporting a request by requestId. 3627 * These have already been vetted (their Capabilities satisfy the request) 3628 * and the are the highest scored network available. 3629 * the are keyed off the Requests requestId. 3630 */ 3631 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3632 new SparseArray<NetworkAgentInfo>(); 3633 3634 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3635 new SparseArray<NetworkAgentInfo>(); 3636 3637 // NetworkAgentInfo keyed off its connecting messenger 3638 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3639 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3640 new HashMap<Messenger, NetworkAgentInfo>(); 3641 3642 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3643 private final NetworkRequest mDefaultRequest; 3644 3645 private NetworkAgentInfo getDefaultNetwork() { 3646 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3647 } 3648 3649 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3650 return nai == getDefaultNetwork(); 3651 } 3652 3653 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3654 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3655 int currentScore, NetworkMisc networkMisc) { 3656 enforceConnectivityInternalPermission(); 3657 3658 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3659 // satisfies mDefaultRequest. 3660 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3661 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 3662 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler, 3663 new NetworkMisc(networkMisc), mDefaultRequest); 3664 synchronized (this) { 3665 nai.networkMonitor.systemReady = mSystemReady; 3666 } 3667 if (DBG) log("registerNetworkAgent " + nai); 3668 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3669 } 3670 3671 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3672 if (VDBG) log("Got NetworkAgent Messenger"); 3673 mNetworkAgentInfos.put(na.messenger, na); 3674 assignNextNetId(na); 3675 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3676 NetworkInfo networkInfo = na.networkInfo; 3677 na.networkInfo = null; 3678 updateNetworkInfo(na, networkInfo); 3679 } 3680 3681 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3682 LinkProperties newLp = networkAgent.linkProperties; 3683 int netId = networkAgent.network.netId; 3684 3685 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3686 // we do anything else, make sure its LinkProperties are accurate. 3687 if (networkAgent.clatd != null) { 3688 networkAgent.clatd.fixupLinkProperties(oldLp); 3689 } 3690 3691 updateInterfaces(newLp, oldLp, netId); 3692 updateMtu(newLp, oldLp); 3693 // TODO - figure out what to do for clat 3694// for (LinkProperties lp : newLp.getStackedLinks()) { 3695// updateMtu(lp, null); 3696// } 3697 updateTcpBufferSizes(networkAgent); 3698 3699 // TODO: deprecate and remove mDefaultDns when we can do so safely. 3700 // For now, use it only when the network has Internet access. http://b/18327075 3701 final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3702 NetworkCapabilities.NET_CAPABILITY_INTERNET); 3703 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3704 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3705 3706 updateClat(newLp, oldLp, networkAgent); 3707 if (isDefaultNetwork(networkAgent)) handleApplyDefaultProxy(newLp.getHttpProxy()); 3708 // TODO - move this check to cover the whole function 3709 if (!Objects.equals(newLp, oldLp)) { 3710 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3711 } 3712 } 3713 3714 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3715 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3716 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3717 3718 if (!wasRunningClat && shouldRunClat) { 3719 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3720 nai.clatd.start(); 3721 } else if (wasRunningClat && !shouldRunClat) { 3722 nai.clatd.stop(); 3723 } 3724 } 3725 3726 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3727 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3728 if (oldLp != null) { 3729 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3730 } else if (newLp != null) { 3731 interfaceDiff.added = newLp.getAllInterfaceNames(); 3732 } 3733 for (String iface : interfaceDiff.added) { 3734 try { 3735 if (DBG) log("Adding iface " + iface + " to network " + netId); 3736 mNetd.addInterfaceToNetwork(iface, netId); 3737 } catch (Exception e) { 3738 loge("Exception adding interface: " + e); 3739 } 3740 } 3741 for (String iface : interfaceDiff.removed) { 3742 try { 3743 if (DBG) log("Removing iface " + iface + " from network " + netId); 3744 mNetd.removeInterfaceFromNetwork(iface, netId); 3745 } catch (Exception e) { 3746 loge("Exception removing interface: " + e); 3747 } 3748 } 3749 } 3750 3751 /** 3752 * Have netd update routes from oldLp to newLp. 3753 * @return true if routes changed between oldLp and newLp 3754 */ 3755 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3756 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3757 if (oldLp != null) { 3758 routeDiff = oldLp.compareAllRoutes(newLp); 3759 } else if (newLp != null) { 3760 routeDiff.added = newLp.getAllRoutes(); 3761 } 3762 3763 // add routes before removing old in case it helps with continuous connectivity 3764 3765 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3766 for (RouteInfo route : routeDiff.added) { 3767 if (route.hasGateway()) continue; 3768 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3769 try { 3770 mNetd.addRoute(netId, route); 3771 } catch (Exception e) { 3772 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3773 loge("Exception in addRoute for non-gateway: " + e); 3774 } 3775 } 3776 } 3777 for (RouteInfo route : routeDiff.added) { 3778 if (route.hasGateway() == false) continue; 3779 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3780 try { 3781 mNetd.addRoute(netId, route); 3782 } catch (Exception e) { 3783 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3784 loge("Exception in addRoute for gateway: " + e); 3785 } 3786 } 3787 } 3788 3789 for (RouteInfo route : routeDiff.removed) { 3790 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3791 try { 3792 mNetd.removeRoute(netId, route); 3793 } catch (Exception e) { 3794 loge("Exception in removeRoute: " + e); 3795 } 3796 } 3797 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3798 } 3799 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 3800 boolean flush, boolean useDefaultDns) { 3801 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 3802 Collection<InetAddress> dnses = newLp.getDnsServers(); 3803 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 3804 dnses = new ArrayList(); 3805 dnses.add(mDefaultDns); 3806 if (DBG) { 3807 loge("no dns provided for netId " + netId + ", so using defaults"); 3808 } 3809 } 3810 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 3811 try { 3812 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 3813 newLp.getDomains()); 3814 } catch (Exception e) { 3815 loge("Exception in setDnsServersForNetwork: " + e); 3816 } 3817 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 3818 if (defaultNai != null && defaultNai.network.netId == netId) { 3819 setDefaultDnsSystemProperties(dnses); 3820 } 3821 flushVmDnsCache(); 3822 } else if (flush) { 3823 try { 3824 mNetd.flushNetworkDnsCache(netId); 3825 } catch (Exception e) { 3826 loge("Exception in flushNetworkDnsCache: " + e); 3827 } 3828 flushVmDnsCache(); 3829 } 3830 } 3831 3832 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 3833 int last = 0; 3834 for (InetAddress dns : dnses) { 3835 ++last; 3836 String key = "net.dns" + last; 3837 String value = dns.getHostAddress(); 3838 SystemProperties.set(key, value); 3839 } 3840 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 3841 String key = "net.dns" + i; 3842 SystemProperties.set(key, ""); 3843 } 3844 mNumDnsEntries = last; 3845 } 3846 3847 3848 private void updateCapabilities(NetworkAgentInfo networkAgent, 3849 NetworkCapabilities networkCapabilities) { 3850 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 3851 synchronized (networkAgent) { 3852 networkAgent.networkCapabilities = networkCapabilities; 3853 } 3854 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 3855 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 3856 } 3857 } 3858 3859 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 3860 for (int i = 0; i < nai.networkRequests.size(); i++) { 3861 NetworkRequest nr = nai.networkRequests.valueAt(i); 3862 // Don't send listening requests to factories. b/17393458 3863 if (!isRequest(nr)) continue; 3864 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 3865 } 3866 } 3867 3868 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 3869 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 3870 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3871 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 3872 networkRequest); 3873 } 3874 } 3875 3876 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 3877 int notificationType) { 3878 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE) { 3879 Intent intent = new Intent(); 3880 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 3881 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 3882 sendIntent(nri.mPendingIntent, intent); 3883 } 3884 // else not handled 3885 } 3886 3887 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 3888 mPendingIntentWakeLock.acquire(); 3889 try { 3890 if (DBG) log("Sending " + pendingIntent); 3891 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 3892 } catch (PendingIntent.CanceledException e) { 3893 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 3894 mPendingIntentWakeLock.release(); 3895 releasePendingNetworkRequest(pendingIntent); 3896 } 3897 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 3898 } 3899 3900 @Override 3901 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 3902 String resultData, Bundle resultExtras) { 3903 if (DBG) log("Finished sending " + pendingIntent); 3904 mPendingIntentWakeLock.release(); 3905 releasePendingNetworkRequest(pendingIntent); 3906 } 3907 3908 private void callCallbackForRequest(NetworkRequestInfo nri, 3909 NetworkAgentInfo networkAgent, int notificationType) { 3910 if (nri.messenger == null) return; // Default request has no msgr 3911 Bundle bundle = new Bundle(); 3912 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 3913 new NetworkRequest(nri.request)); 3914 Message msg = Message.obtain(); 3915 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 3916 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 3917 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 3918 } 3919 switch (notificationType) { 3920 case ConnectivityManager.CALLBACK_LOSING: { 3921 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 3922 break; 3923 } 3924 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 3925 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 3926 new NetworkCapabilities(networkAgent.networkCapabilities)); 3927 break; 3928 } 3929 case ConnectivityManager.CALLBACK_IP_CHANGED: { 3930 bundle.putParcelable(LinkProperties.class.getSimpleName(), 3931 new LinkProperties(networkAgent.linkProperties)); 3932 break; 3933 } 3934 } 3935 msg.what = notificationType; 3936 msg.setData(bundle); 3937 try { 3938 if (VDBG) { 3939 log("sending notification " + notifyTypeToName(notificationType) + 3940 " for " + nri.request); 3941 } 3942 nri.messenger.send(msg); 3943 } catch (RemoteException e) { 3944 // may occur naturally in the race of binder death. 3945 loge("RemoteException caught trying to send a callback msg for " + nri.request); 3946 } 3947 } 3948 3949 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 3950 for (int i = 0; i < nai.networkRequests.size(); i++) { 3951 NetworkRequest nr = nai.networkRequests.valueAt(i); 3952 // Ignore listening requests. 3953 if (!isRequest(nr)) continue; 3954 loge("Dead network still had at least " + nr); 3955 break; 3956 } 3957 nai.asyncChannel.disconnect(); 3958 } 3959 3960 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 3961 if (oldNetwork == null) { 3962 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 3963 return; 3964 } 3965 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 3966 teardownUnneededNetwork(oldNetwork); 3967 } 3968 3969 private void makeDefault(NetworkAgentInfo newNetwork) { 3970 if (DBG) log("Switching to new default network: " + newNetwork); 3971 setupDataActivityTracking(newNetwork); 3972 try { 3973 mNetd.setDefaultNetId(newNetwork.network.netId); 3974 } catch (Exception e) { 3975 loge("Exception setting default network :" + e); 3976 } 3977 notifyLockdownVpn(newNetwork); 3978 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 3979 updateTcpBufferSizes(newNetwork); 3980 } 3981 3982 // Handles a network appearing or improving its score. 3983 // 3984 // - Evaluates all current NetworkRequests that can be 3985 // satisfied by newNetwork, and reassigns to newNetwork 3986 // any such requests for which newNetwork is the best. 3987 // 3988 // - Lingers any validated Networks that as a result are no longer 3989 // needed. A network is needed if it is the best network for 3990 // one or more NetworkRequests, or if it is a VPN. 3991 // 3992 // - Tears down newNetwork if it just became validated 3993 // (i.e. nascent==JUST_VALIDATED) but turns out to be unneeded. 3994 // 3995 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 3996 // networks that have no chance (i.e. even if validated) 3997 // of becoming the highest scoring network. 3998 // 3999 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4000 // it does not remove NetworkRequests that other Networks could better satisfy. 4001 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4002 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4003 // as it performs better by a factor of the number of Networks. 4004 // 4005 // @param newNetwork is the network to be matched against NetworkRequests. 4006 // @param nascent indicates if newNetwork just became validated, in which case it should be 4007 // torn down if unneeded. 4008 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4009 // performed to tear down unvalidated networks that have no chance (i.e. even if 4010 // validated) of becoming the highest scoring network. 4011 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, NascentState nascent, 4012 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4013 if (!newNetwork.created) return; 4014 if (nascent == NascentState.JUST_VALIDATED && !newNetwork.validated) { 4015 loge("ERROR: nascent network not validated."); 4016 } 4017 boolean keep = newNetwork.isVPN(); 4018 boolean isNewDefault = false; 4019 if (DBG) log("rematching " + newNetwork.name()); 4020 // Find and migrate to this Network any NetworkRequests for 4021 // which this network is now the best. 4022 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4023 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4024 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4025 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4026 if (newNetwork == currentNetwork) { 4027 if (DBG) { 4028 log("Network " + newNetwork.name() + " was already satisfying" + 4029 " request " + nri.request.requestId + ". No change."); 4030 } 4031 keep = true; 4032 continue; 4033 } 4034 4035 // check if it satisfies the NetworkCapabilities 4036 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4037 if (newNetwork.satisfies(nri.request)) { 4038 if (!nri.isRequest) { 4039 // This is not a request, it's a callback listener. 4040 // Add it to newNetwork regardless of score. 4041 newNetwork.addRequest(nri.request); 4042 continue; 4043 } 4044 4045 // next check if it's better than any current network we're using for 4046 // this request 4047 if (VDBG) { 4048 log("currentScore = " + 4049 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4050 ", newScore = " + newNetwork.getCurrentScore()); 4051 } 4052 if (currentNetwork == null || 4053 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4054 if (currentNetwork != null) { 4055 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4056 currentNetwork.networkRequests.remove(nri.request.requestId); 4057 currentNetwork.networkLingered.add(nri.request); 4058 affectedNetworks.add(currentNetwork); 4059 } else { 4060 if (DBG) log(" accepting network in place of null"); 4061 } 4062 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4063 newNetwork.addRequest(nri.request); 4064 if (nri.isRequest && nri.request.legacyType != TYPE_NONE) { 4065 mLegacyTypeTracker.add(nri.request.legacyType, newNetwork); 4066 } 4067 keep = true; 4068 // Tell NetworkFactories about the new score, so they can stop 4069 // trying to connect if they know they cannot match it. 4070 // TODO - this could get expensive if we have alot of requests for this 4071 // network. Think about if there is a way to reduce this. Push 4072 // netid->request mapping to each factory? 4073 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4074 if (mDefaultRequest.requestId == nri.request.requestId) { 4075 isNewDefault = true; 4076 // TODO: Remove following line. It's redundant with makeDefault call. 4077 if (newNetwork.linkProperties != null) { 4078 updateTcpBufferSizes(newNetwork); 4079 setDefaultDnsSystemProperties( 4080 newNetwork.linkProperties.getDnsServers()); 4081 } else { 4082 setDefaultDnsSystemProperties(new ArrayList<InetAddress>()); 4083 } 4084 // Maintain the illusion: since the legacy API only 4085 // understands one network at a time, we must pretend 4086 // that the current default network disconnected before 4087 // the new one connected. 4088 if (currentNetwork != null) { 4089 mLegacyTypeTracker.remove(currentNetwork.networkInfo.getType(), 4090 currentNetwork); 4091 } 4092 mDefaultInetConditionPublished = newNetwork.validated ? 100 : 0; 4093 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4094 notifyLockdownVpn(newNetwork); 4095 } 4096 } 4097 } 4098 } 4099 // Linger any networks that are no longer needed. 4100 for (NetworkAgentInfo nai : affectedNetworks) { 4101 boolean teardown = !nai.isVPN() && nai.validated; 4102 for (int i = 0; i < nai.networkRequests.size() && teardown; i++) { 4103 NetworkRequest nr = nai.networkRequests.valueAt(i); 4104 try { 4105 if (isRequest(nr)) { 4106 teardown = false; 4107 } 4108 } catch (Exception e) { 4109 loge("Request " + nr + " not found in mNetworkRequests."); 4110 loge(" it came from request list of " + nai.name()); 4111 } 4112 } 4113 if (teardown) { 4114 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4115 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4116 } else { 4117 unlinger(nai); 4118 } 4119 } 4120 if (keep) { 4121 if (isNewDefault) { 4122 // Notify system services that this network is up. 4123 makeDefault(newNetwork); 4124 synchronized (ConnectivityService.this) { 4125 // have a new default network, release the transition wakelock in 4126 // a second if it's held. The second pause is to allow apps 4127 // to reconnect over the new network 4128 if (mNetTransitionWakeLock.isHeld()) { 4129 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4130 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4131 mNetTransitionWakeLockSerialNumber, 0), 4132 1000); 4133 } 4134 } 4135 } 4136 4137 // Notify battery stats service about this network, both the normal 4138 // interface and any stacked links. 4139 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4140 try { 4141 final IBatteryStats bs = BatteryStatsService.getService(); 4142 final int type = newNetwork.networkInfo.getType(); 4143 4144 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4145 bs.noteNetworkInterfaceType(baseIface, type); 4146 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4147 final String stackedIface = stacked.getInterfaceName(); 4148 bs.noteNetworkInterfaceType(stackedIface, type); 4149 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4150 } 4151 } catch (RemoteException ignored) { 4152 } 4153 4154 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4155 4156 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4157 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4158 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4159 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4160 if (newNetwork.isVPN()) { 4161 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4162 } 4163 } else if (nascent == NascentState.JUST_VALIDATED) { 4164 // Only tear down newly validated networks here. Leave unvalidated to either become 4165 // validated (and get evaluated against peers, one losing here), or get reaped (see 4166 // reapUnvalidatedNetworks) if they have no chance of becoming the highest scoring 4167 // network. Networks that have been up for a while and are validated should be torn 4168 // down via the lingering process so communication on that network is given time to 4169 // wrap up. 4170 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4171 teardownUnneededNetwork(newNetwork); 4172 } 4173 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4174 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4175 if (!nai.created || nai.validated || nai.isVPN()) continue; 4176 boolean reap = true; 4177 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4178 // If this Network is already the highest scoring Network for a request, or if 4179 // there is hope for it to become one if it validated, then don't reap it. 4180 if (nri.isRequest && nai.satisfies(nri.request) && 4181 (nai.networkRequests.get(nri.request.requestId) != null || 4182 // Note that this catches two important cases: 4183 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 4184 // is currently satisfying the request. This is desirable when 4185 // cellular ends up validating but WiFi does not. 4186 // 2. Unvalidated WiFi will not be reaped when validated cellular 4187 // is currently satsifying the request. This is desirable when 4188 // WiFi ends up validating and out scoring cellular. 4189 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 4190 nai.getCurrentScoreAsValidated())) { 4191 reap = false; 4192 break; 4193 } 4194 } 4195 if (reap) { 4196 if (DBG) log("Reaping " + nai.name()); 4197 teardownUnneededNetwork(nai); 4198 } 4199 } 4200 } 4201 } 4202 4203 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4204 // being disconnected. 4205 // If only one Network's score or capabilities have been modified since the last time 4206 // this function was called, pass this Network in via the "changed" arugment, otherwise 4207 // pass null. 4208 // If only one Network has been changed but its NetworkCapabilities have not changed, 4209 // pass in the Network's score (from getCurrentScore()) prior to the change via 4210 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4211 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4212 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4213 // to avoid the slowness. It is not simply enough to process just "changed", for 4214 // example in the case where "changed"'s score decreases and another network should begin 4215 // satifying a NetworkRequest that "changed" currently satisfies. 4216 4217 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4218 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4219 // rematchNetworkAndRequests() handles. 4220 if (changed != null && oldScore < changed.getCurrentScore()) { 4221 rematchNetworkAndRequests(changed, NascentState.NOT_JUST_VALIDATED, 4222 ReapUnvalidatedNetworks.REAP); 4223 } else { 4224 for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) { 4225 rematchNetworkAndRequests((NetworkAgentInfo)i.next(), 4226 NascentState.NOT_JUST_VALIDATED, 4227 // Only reap the last time through the loop. Reaping before all rematching 4228 // is complete could incorrectly teardown a network that hasn't yet been 4229 // rematched. 4230 i.hasNext() ? ReapUnvalidatedNetworks.DONT_REAP 4231 : ReapUnvalidatedNetworks.REAP); 4232 } 4233 } 4234 } 4235 4236 private void updateInetCondition(NetworkAgentInfo nai, boolean valid) { 4237 // Don't bother updating until we've graduated to validated at least once. 4238 if (!nai.validated) return; 4239 // For now only update icons for default connection. 4240 // TODO: Update WiFi and cellular icons separately. b/17237507 4241 if (!isDefaultNetwork(nai)) return; 4242 4243 int newInetCondition = valid ? 100 : 0; 4244 // Don't repeat publish. 4245 if (newInetCondition == mDefaultInetConditionPublished) return; 4246 4247 mDefaultInetConditionPublished = newInetCondition; 4248 sendInetConditionBroadcast(nai.networkInfo); 4249 } 4250 4251 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4252 if (mLockdownTracker != null) { 4253 if (nai != null && nai.isVPN()) { 4254 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4255 } else { 4256 mLockdownTracker.onNetworkInfoChanged(); 4257 } 4258 } 4259 } 4260 4261 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4262 NetworkInfo.State state = newInfo.getState(); 4263 NetworkInfo oldInfo = null; 4264 synchronized (networkAgent) { 4265 oldInfo = networkAgent.networkInfo; 4266 networkAgent.networkInfo = newInfo; 4267 } 4268 notifyLockdownVpn(networkAgent); 4269 4270 if (oldInfo != null && oldInfo.getState() == state) { 4271 if (VDBG) log("ignoring duplicate network state non-change"); 4272 return; 4273 } 4274 if (DBG) { 4275 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4276 (oldInfo == null ? "null" : oldInfo.getState()) + 4277 " to " + state); 4278 } 4279 4280 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4281 try { 4282 // This should never fail. Specifying an already in use NetID will cause failure. 4283 if (networkAgent.isVPN()) { 4284 mNetd.createVirtualNetwork(networkAgent.network.netId, 4285 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4286 (networkAgent.networkMisc == null || 4287 !networkAgent.networkMisc.allowBypass)); 4288 } else { 4289 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4290 } 4291 } catch (Exception e) { 4292 loge("Error creating network " + networkAgent.network.netId + ": " 4293 + e.getMessage()); 4294 return; 4295 } 4296 networkAgent.created = true; 4297 updateLinkProperties(networkAgent, null); 4298 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4299 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4300 if (networkAgent.isVPN()) { 4301 // Temporarily disable the default proxy (not global). 4302 synchronized (mProxyLock) { 4303 if (!mDefaultProxyDisabled) { 4304 mDefaultProxyDisabled = true; 4305 if (mGlobalProxy == null && mDefaultProxy != null) { 4306 sendProxyBroadcast(null); 4307 } 4308 } 4309 } 4310 // TODO: support proxy per network. 4311 } 4312 // Consider network even though it is not yet validated. 4313 rematchNetworkAndRequests(networkAgent, NascentState.NOT_JUST_VALIDATED, 4314 ReapUnvalidatedNetworks.REAP); 4315 } else if (state == NetworkInfo.State.DISCONNECTED || 4316 state == NetworkInfo.State.SUSPENDED) { 4317 networkAgent.asyncChannel.disconnect(); 4318 if (networkAgent.isVPN()) { 4319 synchronized (mProxyLock) { 4320 if (mDefaultProxyDisabled) { 4321 mDefaultProxyDisabled = false; 4322 if (mGlobalProxy == null && mDefaultProxy != null) { 4323 sendProxyBroadcast(mDefaultProxy); 4324 } 4325 } 4326 } 4327 } 4328 } 4329 } 4330 4331 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4332 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4333 if (score < 0) { 4334 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4335 "). Bumping score to min of 0"); 4336 score = 0; 4337 } 4338 4339 final int oldScore = nai.getCurrentScore(); 4340 nai.setCurrentScore(score); 4341 4342 rematchAllNetworksAndRequests(nai, oldScore); 4343 4344 sendUpdatedScoreToFactories(nai); 4345 } 4346 4347 // notify only this one new request of the current state 4348 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4349 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4350 // TODO - read state from monitor to decide what to send. 4351// if (nai.networkMonitor.isLingering()) { 4352// notifyType = NetworkCallbacks.LOSING; 4353// } else if (nai.networkMonitor.isEvaluating()) { 4354// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4355// } 4356 if (nri.mPendingIntent == null) { 4357 callCallbackForRequest(nri, nai, notifyType); 4358 } else { 4359 sendPendingIntentForRequest(nri, nai, notifyType); 4360 } 4361 } 4362 4363 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4364 // The NetworkInfo we actually send out has no bearing on the real 4365 // state of affairs. For example, if the default connection is mobile, 4366 // and a request for HIPRI has just gone away, we need to pretend that 4367 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4368 // the state to DISCONNECTED, even though the network is of type MOBILE 4369 // and is still connected. 4370 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4371 info.setType(type); 4372 if (connected) { 4373 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4374 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 4375 } else { 4376 info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo()); 4377 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4378 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4379 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4380 if (info.isFailover()) { 4381 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4382 nai.networkInfo.setFailover(false); 4383 } 4384 if (info.getReason() != null) { 4385 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4386 } 4387 if (info.getExtraInfo() != null) { 4388 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4389 } 4390 NetworkAgentInfo newDefaultAgent = null; 4391 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4392 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4393 if (newDefaultAgent != null) { 4394 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4395 newDefaultAgent.networkInfo); 4396 } else { 4397 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4398 } 4399 } 4400 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4401 mDefaultInetConditionPublished); 4402 final Intent immediateIntent = new Intent(intent); 4403 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 4404 sendStickyBroadcast(immediateIntent); 4405 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 4406 if (newDefaultAgent != null) { 4407 sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo, 4408 getConnectivityChangeDelay()); 4409 } 4410 } 4411 } 4412 4413 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4414 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4415 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4416 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4417 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4418 if (VDBG) log(" sending notification for " + nr); 4419 if (nri.mPendingIntent == null) { 4420 callCallbackForRequest(nri, networkAgent, notifyType); 4421 } else { 4422 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4423 } 4424 } 4425 } 4426 4427 private String notifyTypeToName(int notifyType) { 4428 switch (notifyType) { 4429 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4430 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4431 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4432 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4433 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4434 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4435 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4436 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4437 } 4438 return "UNKNOWN"; 4439 } 4440 4441 @Override 4442 public boolean addVpnAddress(String address, int prefixLength) { 4443 throwIfLockdownEnabled(); 4444 int user = UserHandle.getUserId(Binder.getCallingUid()); 4445 synchronized (mVpns) { 4446 return mVpns.get(user).addAddress(address, prefixLength); 4447 } 4448 } 4449 4450 @Override 4451 public boolean removeVpnAddress(String address, int prefixLength) { 4452 throwIfLockdownEnabled(); 4453 int user = UserHandle.getUserId(Binder.getCallingUid()); 4454 synchronized (mVpns) { 4455 return mVpns.get(user).removeAddress(address, prefixLength); 4456 } 4457 } 4458 4459 @Override 4460 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4461 throwIfLockdownEnabled(); 4462 int user = UserHandle.getUserId(Binder.getCallingUid()); 4463 synchronized (mVpns) { 4464 return mVpns.get(user).setUnderlyingNetworks(networks); 4465 } 4466 } 4467} 4468