ConnectivityService.java revision 8f29dcfb53350cf687112ac79a806e4d34dfa22b
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 // How long to delay to removal of a pending intent based request. 220 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 221 private final int mReleasePendingIntentDelayMs; 222 223 private PendingIntent mSampleIntervalElapsedIntent; 224 225 // Set network sampling interval at 12 minutes, this way, even if the timers get 226 // aggregated, it will fire at around 15 minutes, which should allow us to 227 // aggregate this timer with other timers (specially the socket keep alive timers) 228 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 12 * 60); 229 230 // start network sampling a minute after booting ... 231 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 60); 232 233 AlarmManager mAlarmManager; 234 235 private Tethering mTethering; 236 237 private final PermissionMonitor mPermissionMonitor; 238 239 private KeyStore mKeyStore; 240 241 @GuardedBy("mVpns") 242 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 243 244 private boolean mLockdownEnabled; 245 private LockdownVpnTracker mLockdownTracker; 246 247 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 248 private Object mRulesLock = new Object(); 249 /** Currently active network rules by UID. */ 250 private SparseIntArray mUidRules = new SparseIntArray(); 251 /** Set of ifaces that are costly. */ 252 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 253 254 /** 255 * Sometimes we want to refer to the individual network state 256 * trackers separately, and sometimes we just want to treat them 257 * abstractly. 258 */ 259 private NetworkStateTracker mNetTrackers[]; 260 261 private Context mContext; 262 private int mNetworkPreference; 263 // 0 is full bad, 100 is full good 264 private int mDefaultInetConditionPublished = 0; 265 266 private Object mDnsLock = new Object(); 267 private int mNumDnsEntries; 268 269 private boolean mTestMode; 270 private static ConnectivityService sServiceInstance; 271 272 private INetworkManagementService mNetd; 273 private INetworkPolicyManager mPolicyManager; 274 275 private String mCurrentTcpBufferSizes; 276 277 private static final int ENABLED = 1; 278 private static final int DISABLED = 0; 279 280 // Arguments to rematchNetworkAndRequests() 281 private enum NascentState { 282 // Indicates a network was just validated for the first time. If the network is found to 283 // be unwanted (i.e. not satisfy any NetworkRequests) it is torn down. 284 JUST_VALIDATED, 285 // Indicates a network was not validated for the first time immediately prior to this call. 286 NOT_JUST_VALIDATED 287 }; 288 private enum ReapUnvalidatedNetworks { 289 // Tear down unvalidated networks that have no chance (i.e. even if validated) of becoming 290 // the highest scoring network satisfying a NetworkRequest. This should be passed when it's 291 // known that there may be unvalidated networks that could potentially be reaped, and when 292 // all networks have been rematched against all NetworkRequests. 293 REAP, 294 // Don't reap unvalidated networks. This should be passed when it's known that there are 295 // no unvalidated networks that could potentially be reaped, and when some networks have 296 // not yet been rematched against all NetworkRequests. 297 DONT_REAP 298 }; 299 300 /** 301 * used internally to change our mobile data enabled flag 302 */ 303 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 304 305 /** 306 * used internally to clear a wakelock when transitioning 307 * from one net to another. Clear happens when we get a new 308 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 309 * after a timeout if no network is found (typically 1 min). 310 */ 311 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 312 313 /** 314 * used internally to reload global proxy settings 315 */ 316 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 317 318 /** 319 * used internally to set external dependency met/unmet 320 * arg1 = ENABLED (met) or DISABLED (unmet) 321 * arg2 = NetworkType 322 */ 323 private static final int EVENT_SET_DEPENDENCY_MET = 10; 324 325 /** 326 * used internally to send a sticky broadcast delayed. 327 */ 328 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 329 330 /** 331 * Used internally to 332 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 333 */ 334 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 335 336 /** 337 * Used internally to disable fail fast of mobile data 338 */ 339 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 340 341 /** 342 * used internally to indicate that data sampling interval is up 343 */ 344 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 345 346 /** 347 * PAC manager has received new port. 348 */ 349 private static final int EVENT_PROXY_HAS_CHANGED = 16; 350 351 /** 352 * used internally when registering NetworkFactories 353 * obj = NetworkFactoryInfo 354 */ 355 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 356 357 /** 358 * used internally when registering NetworkAgents 359 * obj = Messenger 360 */ 361 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 362 363 /** 364 * used to add a network request 365 * includes a NetworkRequestInfo 366 */ 367 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 368 369 /** 370 * indicates a timeout period is over - check if we had a network yet or not 371 * and if not, call the timeout calback (but leave the request live until they 372 * cancel it. 373 * includes a NetworkRequestInfo 374 */ 375 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 376 377 /** 378 * used to add a network listener - no request 379 * includes a NetworkRequestInfo 380 */ 381 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 382 383 /** 384 * used to remove a network request, either a listener or a real request 385 * arg1 = UID of caller 386 * obj = NetworkRequest 387 */ 388 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 389 390 /** 391 * used internally when registering NetworkFactories 392 * obj = Messenger 393 */ 394 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 395 396 /** 397 * used internally to expire a wakelock when transitioning 398 * from one net to another. Expire happens when we fail to find 399 * a new network (typically after 1 minute) - 400 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 401 * a replacement network. 402 */ 403 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 404 405 /** 406 * Used internally to indicate the system is ready. 407 */ 408 private static final int EVENT_SYSTEM_READY = 25; 409 410 /** 411 * used to add a network request with a pending intent 412 * includes a NetworkRequestInfo 413 */ 414 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 415 416 /** 417 * used to remove a pending intent and its associated network request. 418 * arg1 = UID of caller 419 * obj = PendingIntent 420 */ 421 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 422 423 424 /** Handler used for internal events. */ 425 final private InternalHandler mHandler; 426 /** Handler used for incoming {@link NetworkStateTracker} events. */ 427 final private NetworkStateTrackerHandler mTrackerHandler; 428 429 private boolean mSystemReady; 430 private Intent mInitialBroadcast; 431 432 private PowerManager.WakeLock mNetTransitionWakeLock; 433 private String mNetTransitionWakeLockCausedBy = ""; 434 private int mNetTransitionWakeLockSerialNumber; 435 private int mNetTransitionWakeLockTimeout; 436 private final PowerManager.WakeLock mPendingIntentWakeLock; 437 438 private InetAddress mDefaultDns; 439 440 // used in DBG mode to track inet condition reports 441 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 442 private ArrayList mInetLog; 443 444 // track the current default http proxy - tell the world if we get a new one (real change) 445 private volatile ProxyInfo mDefaultProxy = null; 446 private Object mProxyLock = new Object(); 447 private boolean mDefaultProxyDisabled = false; 448 449 // track the global proxy. 450 private ProxyInfo mGlobalProxy = null; 451 452 private PacManager mPacManager = null; 453 454 private SettingsObserver mSettingsObserver; 455 456 private UserManager mUserManager; 457 458 NetworkConfig[] mNetConfigs; 459 int mNetworksDefined; 460 461 // the set of network types that can only be enabled by system/sig apps 462 List mProtectedNetworks; 463 464 private DataConnectionStats mDataConnectionStats; 465 466 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 467 468 TelephonyManager mTelephonyManager; 469 470 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 471 private final static int MIN_NET_ID = 100; // some reserved marks 472 private final static int MAX_NET_ID = 65535; 473 private int mNextNetId = MIN_NET_ID; 474 475 // sequence number of NetworkRequests 476 private int mNextNetworkRequestId = 1; 477 478 /** 479 * Implements support for the legacy "one network per network type" model. 480 * 481 * We used to have a static array of NetworkStateTrackers, one for each 482 * network type, but that doesn't work any more now that we can have, 483 * for example, more that one wifi network. This class stores all the 484 * NetworkAgentInfo objects that support a given type, but the legacy 485 * API will only see the first one. 486 * 487 * It serves two main purposes: 488 * 489 * 1. Provide information about "the network for a given type" (since this 490 * API only supports one). 491 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 492 * the first network for a given type changes, or if the default network 493 * changes. 494 */ 495 private class LegacyTypeTracker { 496 497 private static final boolean DBG = true; 498 private static final boolean VDBG = false; 499 private static final String TAG = "CSLegacyTypeTracker"; 500 501 /** 502 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 503 * Each list holds references to all NetworkAgentInfos that are used to 504 * satisfy requests for that network type. 505 * 506 * This array is built out at startup such that an unsupported network 507 * doesn't get an ArrayList instance, making this a tristate: 508 * unsupported, supported but not active and active. 509 * 510 * The actual lists are populated when we scan the network types that 511 * are supported on this device. 512 */ 513 private ArrayList<NetworkAgentInfo> mTypeLists[]; 514 515 public LegacyTypeTracker() { 516 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 517 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 518 } 519 520 public void addSupportedType(int type) { 521 if (mTypeLists[type] != null) { 522 throw new IllegalStateException( 523 "legacy list for type " + type + "already initialized"); 524 } 525 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 526 } 527 528 public boolean isTypeSupported(int type) { 529 return isNetworkTypeValid(type) && mTypeLists[type] != null; 530 } 531 532 public NetworkAgentInfo getNetworkForType(int type) { 533 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 534 return mTypeLists[type].get(0); 535 } else { 536 return null; 537 } 538 } 539 540 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 541 if (DBG) { 542 log("Sending " + (connected ? "connected" : "disconnected") + 543 " broadcast for type " + type + " " + nai.name() + 544 " isDefaultNetwork=" + isDefaultNetwork(nai)); 545 } 546 } 547 548 /** Adds the given network to the specified legacy type list. */ 549 public void add(int type, NetworkAgentInfo nai) { 550 if (!isTypeSupported(type)) { 551 return; // Invalid network type. 552 } 553 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 554 555 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 556 if (list.contains(nai)) { 557 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 558 return; 559 } 560 561 list.add(nai); 562 563 // Send a broadcast if this is the first network of its type or if it's the default. 564 if (list.size() == 1 || isDefaultNetwork(nai)) { 565 maybeLogBroadcast(nai, true, type); 566 sendLegacyNetworkBroadcast(nai, true, type); 567 } 568 } 569 570 /** Removes the given network from the specified legacy type list. */ 571 public void remove(int type, NetworkAgentInfo nai) { 572 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 573 if (list == null || list.isEmpty()) { 574 return; 575 } 576 577 boolean wasFirstNetwork = list.get(0).equals(nai); 578 579 if (!list.remove(nai)) { 580 return; 581 } 582 583 if (wasFirstNetwork || isDefaultNetwork(nai)) { 584 maybeLogBroadcast(nai, false, type); 585 sendLegacyNetworkBroadcast(nai, false, type); 586 } 587 588 if (!list.isEmpty() && wasFirstNetwork) { 589 if (DBG) log("Other network available for type " + type + 590 ", sending connected broadcast"); 591 maybeLogBroadcast(list.get(0), false, type); 592 sendLegacyNetworkBroadcast(list.get(0), false, type); 593 } 594 } 595 596 /** Removes the given network from all legacy type lists. */ 597 public void remove(NetworkAgentInfo nai) { 598 if (VDBG) log("Removing agent " + nai); 599 for (int type = 0; type < mTypeLists.length; type++) { 600 remove(type, nai); 601 } 602 } 603 604 private String naiToString(NetworkAgentInfo nai) { 605 String name = (nai != null) ? nai.name() : "null"; 606 String state = (nai.networkInfo != null) ? 607 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 608 "???/???"; 609 return name + " " + state; 610 } 611 612 public void dump(IndentingPrintWriter pw) { 613 for (int type = 0; type < mTypeLists.length; type++) { 614 if (mTypeLists[type] == null) continue; 615 pw.print(type + " "); 616 pw.increaseIndent(); 617 if (mTypeLists[type].size() == 0) pw.println("none"); 618 for (NetworkAgentInfo nai : mTypeLists[type]) { 619 pw.println(naiToString(nai)); 620 } 621 pw.decreaseIndent(); 622 } 623 } 624 625 // This class needs its own log method because it has a different TAG. 626 private void log(String s) { 627 Slog.d(TAG, s); 628 } 629 630 } 631 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 632 633 public ConnectivityService(Context context, INetworkManagementService netManager, 634 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 635 if (DBG) log("ConnectivityService starting up"); 636 637 NetworkCapabilities netCap = new NetworkCapabilities(); 638 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 639 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 640 mDefaultRequest = new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 641 NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(), 642 NetworkRequestInfo.REQUEST); 643 mNetworkRequests.put(mDefaultRequest, nri); 644 645 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 646 handlerThread.start(); 647 mHandler = new InternalHandler(handlerThread.getLooper()); 648 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 649 650 // setup our unique device name 651 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 652 String id = Settings.Secure.getString(context.getContentResolver(), 653 Settings.Secure.ANDROID_ID); 654 if (id != null && id.length() > 0) { 655 String name = new String("android-").concat(id); 656 SystemProperties.set("net.hostname", name); 657 } 658 } 659 660 // read our default dns server ip 661 String dns = Settings.Global.getString(context.getContentResolver(), 662 Settings.Global.DEFAULT_DNS_SERVER); 663 if (dns == null || dns.length() == 0) { 664 dns = context.getResources().getString( 665 com.android.internal.R.string.config_default_dns_server); 666 } 667 try { 668 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 669 } catch (IllegalArgumentException e) { 670 loge("Error setting defaultDns using " + dns); 671 } 672 673 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 674 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 675 676 mContext = checkNotNull(context, "missing Context"); 677 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 678 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 679 mKeyStore = KeyStore.getInstance(); 680 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 681 682 try { 683 mPolicyManager.registerListener(mPolicyListener); 684 } catch (RemoteException e) { 685 // ouch, no rules updates means some processes may never get network 686 loge("unable to register INetworkPolicyListener" + e.toString()); 687 } 688 689 final PowerManager powerManager = (PowerManager) context.getSystemService( 690 Context.POWER_SERVICE); 691 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 692 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 693 com.android.internal.R.integer.config_networkTransitionTimeout); 694 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 695 696 mNetTrackers = new NetworkStateTracker[ 697 ConnectivityManager.MAX_NETWORK_TYPE+1]; 698 699 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 700 701 // TODO: What is the "correct" way to do determine if this is a wifi only device? 702 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 703 log("wifiOnly=" + wifiOnly); 704 String[] naStrings = context.getResources().getStringArray( 705 com.android.internal.R.array.networkAttributes); 706 for (String naString : naStrings) { 707 try { 708 NetworkConfig n = new NetworkConfig(naString); 709 if (VDBG) log("naString=" + naString + " config=" + n); 710 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 711 loge("Error in networkAttributes - ignoring attempt to define type " + 712 n.type); 713 continue; 714 } 715 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 716 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 717 n.type); 718 continue; 719 } 720 if (mNetConfigs[n.type] != null) { 721 loge("Error in networkAttributes - ignoring attempt to redefine type " + 722 n.type); 723 continue; 724 } 725 mLegacyTypeTracker.addSupportedType(n.type); 726 727 mNetConfigs[n.type] = n; 728 mNetworksDefined++; 729 } catch(Exception e) { 730 // ignore it - leave the entry null 731 } 732 } 733 734 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 735 if (mNetConfigs[TYPE_VPN] == null) { 736 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 737 // don't need to add TYPE_VPN to mNetConfigs. 738 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 739 mNetworksDefined++; // used only in the log() statement below. 740 } 741 742 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 743 744 mProtectedNetworks = new ArrayList<Integer>(); 745 int[] protectedNetworks = context.getResources().getIntArray( 746 com.android.internal.R.array.config_protectedNetworks); 747 for (int p : protectedNetworks) { 748 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 749 mProtectedNetworks.add(p); 750 } else { 751 if (DBG) loge("Ignoring protectedNetwork " + p); 752 } 753 } 754 755 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 756 && SystemProperties.get("ro.build.type").equals("eng"); 757 758 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 759 760 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 761 762 //set up the listener for user state for creating user VPNs 763 IntentFilter intentFilter = new IntentFilter(); 764 intentFilter.addAction(Intent.ACTION_USER_STARTING); 765 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 766 mContext.registerReceiverAsUser( 767 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 768 769 try { 770 mNetd.registerObserver(mTethering); 771 mNetd.registerObserver(mDataActivityObserver); 772 } catch (RemoteException e) { 773 loge("Error registering observer :" + e); 774 } 775 776 if (DBG) { 777 mInetLog = new ArrayList(); 778 } 779 780 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 781 mSettingsObserver.observe(mContext); 782 783 mDataConnectionStats = new DataConnectionStats(mContext); 784 mDataConnectionStats.startMonitoring(); 785 786 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 787 788 IntentFilter filter = new IntentFilter(); 789 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 790 mContext.registerReceiver( 791 new BroadcastReceiver() { 792 @Override 793 public void onReceive(Context context, Intent intent) { 794 String action = intent.getAction(); 795 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 796 mHandler.sendMessage(mHandler.obtainMessage 797 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 798 } 799 } 800 }, 801 new IntentFilter(filter)); 802 803 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 804 805 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 806 } 807 808 private synchronized int nextNetworkRequestId() { 809 return mNextNetworkRequestId++; 810 } 811 812 private void assignNextNetId(NetworkAgentInfo nai) { 813 synchronized (mNetworkForNetId) { 814 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 815 int netId = mNextNetId; 816 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 817 // Make sure NetID unused. http://b/16815182 818 if (mNetworkForNetId.get(netId) == null) { 819 nai.network = new Network(netId); 820 mNetworkForNetId.put(netId, nai); 821 return; 822 } 823 } 824 } 825 throw new IllegalStateException("No free netIds"); 826 } 827 828 private boolean teardown(NetworkStateTracker netTracker) { 829 if (netTracker.teardown()) { 830 netTracker.setTeardownRequested(true); 831 return true; 832 } else { 833 return false; 834 } 835 } 836 837 private NetworkState getFilteredNetworkState(int networkType, int uid) { 838 NetworkInfo info = null; 839 LinkProperties lp = null; 840 NetworkCapabilities nc = null; 841 Network network = null; 842 843 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 844 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 845 if (nai != null) { 846 synchronized (nai) { 847 info = new NetworkInfo(nai.networkInfo); 848 lp = new LinkProperties(nai.linkProperties); 849 nc = new NetworkCapabilities(nai.networkCapabilities); 850 network = new Network(nai.network); 851 } 852 info.setType(networkType); 853 } else { 854 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 855 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 856 info.setIsAvailable(true); 857 lp = new LinkProperties(); 858 nc = new NetworkCapabilities(); 859 network = null; 860 } 861 info = getFilteredNetworkInfo(info, lp, uid); 862 } 863 864 return new NetworkState(info, lp, nc, network); 865 } 866 867 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 868 if (network == null) { 869 return null; 870 } 871 synchronized (mNetworkForNetId) { 872 return mNetworkForNetId.get(network.netId); 873 } 874 }; 875 876 private NetworkState getUnfilteredActiveNetworkState(int uid) { 877 NetworkInfo info = null; 878 LinkProperties lp = null; 879 NetworkCapabilities nc = null; 880 Network network = null; 881 882 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 883 884 if (!mLockdownEnabled) { 885 int user = UserHandle.getUserId(uid); 886 synchronized (mVpns) { 887 Vpn vpn = mVpns.get(user); 888 if (vpn != null && vpn.appliesToUid(uid)) { 889 // getUnderlyingNetworks() returns: 890 // null => the VPN didn't specify anything, so we use the default. 891 // empty array => the VPN explicitly said "no default network". 892 // non-empty array => the VPN specified one or more default networks; we use the 893 // first one. 894 Network[] networks = vpn.getUnderlyingNetworks(); 895 if (networks != null) { 896 if (networks.length > 0) { 897 nai = getNetworkAgentInfoForNetwork(networks[0]); 898 } else { 899 nai = null; 900 } 901 } 902 } 903 } 904 } 905 906 if (nai != null) { 907 synchronized (nai) { 908 info = new NetworkInfo(nai.networkInfo); 909 lp = new LinkProperties(nai.linkProperties); 910 nc = new NetworkCapabilities(nai.networkCapabilities); 911 network = new Network(nai.network); 912 } 913 } 914 915 return new NetworkState(info, lp, nc, network); 916 } 917 918 /** 919 * Check if UID should be blocked from using the network with the given LinkProperties. 920 */ 921 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 922 final boolean networkCostly; 923 final int uidRules; 924 925 final String iface = (lp == null ? "" : lp.getInterfaceName()); 926 synchronized (mRulesLock) { 927 networkCostly = mMeteredIfaces.contains(iface); 928 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 929 } 930 931 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 932 return true; 933 } 934 935 // no restrictive rules; network is visible 936 return false; 937 } 938 939 /** 940 * Return a filtered {@link NetworkInfo}, potentially marked 941 * {@link DetailedState#BLOCKED} based on 942 * {@link #isNetworkWithLinkPropertiesBlocked}. 943 */ 944 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 945 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 946 // network is blocked; clone and override state 947 info = new NetworkInfo(info); 948 info.setDetailedState(DetailedState.BLOCKED, null, null); 949 if (DBG) log("returning Blocked NetworkInfo"); 950 } 951 if (info != null && mLockdownTracker != null) { 952 info = mLockdownTracker.augmentNetworkInfo(info); 953 if (DBG) log("returning Locked NetworkInfo"); 954 } 955 return info; 956 } 957 958 /** 959 * Return NetworkInfo for the active (i.e., connected) network interface. 960 * It is assumed that at most one network is active at a time. If more 961 * than one is active, it is indeterminate which will be returned. 962 * @return the info for the active network, or {@code null} if none is 963 * active 964 */ 965 @Override 966 public NetworkInfo getActiveNetworkInfo() { 967 enforceAccessPermission(); 968 final int uid = Binder.getCallingUid(); 969 NetworkState state = getUnfilteredActiveNetworkState(uid); 970 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 971 } 972 973 /** 974 * Find the first Provisioning network. 975 * 976 * @return NetworkInfo or null if none. 977 */ 978 private NetworkInfo getProvisioningNetworkInfo() { 979 enforceAccessPermission(); 980 981 // Find the first Provisioning Network 982 NetworkInfo provNi = null; 983 for (NetworkInfo ni : getAllNetworkInfo()) { 984 if (ni.isConnectedToProvisioningNetwork()) { 985 provNi = ni; 986 break; 987 } 988 } 989 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 990 return provNi; 991 } 992 993 /** 994 * Find the first Provisioning network or the ActiveDefaultNetwork 995 * if there is no Provisioning network 996 * 997 * @return NetworkInfo or null if none. 998 */ 999 @Override 1000 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 1001 enforceAccessPermission(); 1002 1003 NetworkInfo provNi = getProvisioningNetworkInfo(); 1004 if (provNi == null) { 1005 provNi = getActiveNetworkInfo(); 1006 } 1007 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 1008 return provNi; 1009 } 1010 1011 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1012 enforceAccessPermission(); 1013 final int uid = Binder.getCallingUid(); 1014 NetworkState state = getUnfilteredActiveNetworkState(uid); 1015 return state.networkInfo; 1016 } 1017 1018 @Override 1019 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1020 enforceConnectivityInternalPermission(); 1021 NetworkState state = getUnfilteredActiveNetworkState(uid); 1022 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1023 } 1024 1025 @Override 1026 public NetworkInfo getNetworkInfo(int networkType) { 1027 enforceAccessPermission(); 1028 final int uid = Binder.getCallingUid(); 1029 NetworkState state = getFilteredNetworkState(networkType, uid); 1030 return state.networkInfo; 1031 } 1032 1033 @Override 1034 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1035 enforceAccessPermission(); 1036 final int uid = Binder.getCallingUid(); 1037 NetworkInfo info = null; 1038 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1039 if (nai != null) { 1040 synchronized (nai) { 1041 info = new NetworkInfo(nai.networkInfo); 1042 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1043 } 1044 } 1045 return info; 1046 } 1047 1048 @Override 1049 public NetworkInfo[] getAllNetworkInfo() { 1050 enforceAccessPermission(); 1051 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1052 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1053 networkType++) { 1054 NetworkInfo info = getNetworkInfo(networkType); 1055 if (info != null) { 1056 result.add(info); 1057 } 1058 } 1059 return result.toArray(new NetworkInfo[result.size()]); 1060 } 1061 1062 @Override 1063 public Network getNetworkForType(int networkType) { 1064 enforceAccessPermission(); 1065 final int uid = Binder.getCallingUid(); 1066 NetworkState state = getFilteredNetworkState(networkType, uid); 1067 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1068 return state.network; 1069 } 1070 return null; 1071 } 1072 1073 @Override 1074 public Network[] getAllNetworks() { 1075 enforceAccessPermission(); 1076 final ArrayList<Network> result = new ArrayList(); 1077 synchronized (mNetworkForNetId) { 1078 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1079 result.add(new Network(mNetworkForNetId.valueAt(i).network)); 1080 } 1081 } 1082 return result.toArray(new Network[result.size()]); 1083 } 1084 1085 private NetworkCapabilities getNetworkCapabilitiesAndValidation(NetworkAgentInfo nai) { 1086 if (nai != null) { 1087 synchronized (nai) { 1088 if (nai.created) { 1089 NetworkCapabilities nc = new NetworkCapabilities(nai.networkCapabilities); 1090 if (nai.validated) { 1091 nc.addCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED); 1092 } else { 1093 nc.removeCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED); 1094 } 1095 return nc; 1096 } 1097 } 1098 } 1099 return null; 1100 } 1101 1102 @Override 1103 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1104 // The basic principle is: if an app's traffic could possibly go over a 1105 // network, without the app doing anything multinetwork-specific, 1106 // (hence, by "default"), then include that network's capabilities in 1107 // the array. 1108 // 1109 // In the normal case, app traffic only goes over the system's default 1110 // network connection, so that's the only network returned. 1111 // 1112 // With a VPN in force, some app traffic may go into the VPN, and thus 1113 // over whatever underlying networks the VPN specifies, while other app 1114 // traffic may go over the system default network (e.g.: a split-tunnel 1115 // VPN, or an app disallowed by the VPN), so the set of networks 1116 // returned includes the VPN's underlying networks and the system 1117 // default. 1118 enforceAccessPermission(); 1119 1120 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1121 1122 NetworkAgentInfo nai = getDefaultNetwork(); 1123 NetworkCapabilities nc = getNetworkCapabilitiesAndValidation(getDefaultNetwork()); 1124 if (nc != null) { 1125 result.put(nai.network, nc); 1126 } 1127 1128 if (!mLockdownEnabled) { 1129 synchronized (mVpns) { 1130 Vpn vpn = mVpns.get(userId); 1131 if (vpn != null) { 1132 Network[] networks = vpn.getUnderlyingNetworks(); 1133 if (networks != null) { 1134 for (Network network : networks) { 1135 nai = getNetworkAgentInfoForNetwork(network); 1136 nc = getNetworkCapabilitiesAndValidation(nai); 1137 if (nc != null) { 1138 result.put(nai.network, nc); 1139 } 1140 } 1141 } 1142 } 1143 } 1144 } 1145 1146 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1147 out = result.values().toArray(out); 1148 return out; 1149 } 1150 1151 @Override 1152 public boolean isNetworkSupported(int networkType) { 1153 enforceAccessPermission(); 1154 return mLegacyTypeTracker.isTypeSupported(networkType); 1155 } 1156 1157 /** 1158 * Return LinkProperties for the active (i.e., connected) default 1159 * network interface. It is assumed that at most one default network 1160 * is active at a time. If more than one is active, it is indeterminate 1161 * which will be returned. 1162 * @return the ip properties for the active network, or {@code null} if 1163 * none is active 1164 */ 1165 @Override 1166 public LinkProperties getActiveLinkProperties() { 1167 enforceAccessPermission(); 1168 final int uid = Binder.getCallingUid(); 1169 NetworkState state = getUnfilteredActiveNetworkState(uid); 1170 return state.linkProperties; 1171 } 1172 1173 @Override 1174 public LinkProperties getLinkPropertiesForType(int networkType) { 1175 enforceAccessPermission(); 1176 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1177 if (nai != null) { 1178 synchronized (nai) { 1179 return new LinkProperties(nai.linkProperties); 1180 } 1181 } 1182 return null; 1183 } 1184 1185 // TODO - this should be ALL networks 1186 @Override 1187 public LinkProperties getLinkProperties(Network network) { 1188 enforceAccessPermission(); 1189 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1190 if (nai != null) { 1191 synchronized (nai) { 1192 return new LinkProperties(nai.linkProperties); 1193 } 1194 } 1195 return null; 1196 } 1197 1198 @Override 1199 public NetworkCapabilities getNetworkCapabilities(Network network) { 1200 enforceAccessPermission(); 1201 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1202 if (nai != null) { 1203 synchronized (nai) { 1204 return new NetworkCapabilities(nai.networkCapabilities); 1205 } 1206 } 1207 return null; 1208 } 1209 1210 @Override 1211 public NetworkState[] getAllNetworkState() { 1212 enforceAccessPermission(); 1213 final int uid = Binder.getCallingUid(); 1214 final ArrayList<NetworkState> result = Lists.newArrayList(); 1215 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1216 networkType++) { 1217 NetworkState state = getFilteredNetworkState(networkType, uid); 1218 if (state.networkInfo != null) { 1219 result.add(state); 1220 } 1221 } 1222 return result.toArray(new NetworkState[result.size()]); 1223 } 1224 1225 @Override 1226 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1227 enforceAccessPermission(); 1228 final int uid = Binder.getCallingUid(); 1229 final long token = Binder.clearCallingIdentity(); 1230 try { 1231 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1232 if (state.networkInfo != null) { 1233 try { 1234 return mPolicyManager.getNetworkQuotaInfo(state); 1235 } catch (RemoteException e) { 1236 } 1237 } 1238 return null; 1239 } finally { 1240 Binder.restoreCallingIdentity(token); 1241 } 1242 } 1243 1244 @Override 1245 public boolean isActiveNetworkMetered() { 1246 enforceAccessPermission(); 1247 final int uid = Binder.getCallingUid(); 1248 final long token = Binder.clearCallingIdentity(); 1249 try { 1250 return isActiveNetworkMeteredUnchecked(uid); 1251 } finally { 1252 Binder.restoreCallingIdentity(token); 1253 } 1254 } 1255 1256 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1257 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1258 if (state.networkInfo != null) { 1259 try { 1260 return mPolicyManager.isNetworkMetered(state); 1261 } catch (RemoteException e) { 1262 } 1263 } 1264 return false; 1265 } 1266 1267 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1268 @Override 1269 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1270 int deviceType = Integer.parseInt(label); 1271 sendDataActivityBroadcast(deviceType, active, tsNanos); 1272 } 1273 }; 1274 1275 /** 1276 * Ensure that a network route exists to deliver traffic to the specified 1277 * host via the specified network interface. 1278 * @param networkType the type of the network over which traffic to the 1279 * specified host is to be routed 1280 * @param hostAddress the IP address of the host to which the route is 1281 * desired 1282 * @return {@code true} on success, {@code false} on failure 1283 */ 1284 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1285 enforceChangePermission(); 1286 if (mProtectedNetworks.contains(networkType)) { 1287 enforceConnectivityInternalPermission(); 1288 } 1289 1290 InetAddress addr; 1291 try { 1292 addr = InetAddress.getByAddress(hostAddress); 1293 } catch (UnknownHostException e) { 1294 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1295 return false; 1296 } 1297 1298 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1299 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1300 return false; 1301 } 1302 1303 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1304 if (nai == null) { 1305 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1306 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1307 } else { 1308 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1309 } 1310 return false; 1311 } 1312 1313 DetailedState netState; 1314 synchronized (nai) { 1315 netState = nai.networkInfo.getDetailedState(); 1316 } 1317 1318 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1319 if (VDBG) { 1320 log("requestRouteToHostAddress on down network " 1321 + "(" + networkType + ") - dropped" 1322 + " netState=" + netState); 1323 } 1324 return false; 1325 } 1326 1327 final int uid = Binder.getCallingUid(); 1328 final long token = Binder.clearCallingIdentity(); 1329 try { 1330 LinkProperties lp; 1331 int netId; 1332 synchronized (nai) { 1333 lp = nai.linkProperties; 1334 netId = nai.network.netId; 1335 } 1336 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1337 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1338 return ok; 1339 } finally { 1340 Binder.restoreCallingIdentity(token); 1341 } 1342 } 1343 1344 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1345 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1346 if (bestRoute == null) { 1347 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1348 } else { 1349 String iface = bestRoute.getInterface(); 1350 if (bestRoute.getGateway().equals(addr)) { 1351 // if there is no better route, add the implied hostroute for our gateway 1352 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1353 } else { 1354 // if we will connect to this through another route, add a direct route 1355 // to it's gateway 1356 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1357 } 1358 } 1359 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1360 try { 1361 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1362 } catch (Exception e) { 1363 // never crash - catch them all 1364 if (DBG) loge("Exception trying to add a route: " + e); 1365 return false; 1366 } 1367 return true; 1368 } 1369 1370 public void setDataDependency(int networkType, boolean met) { 1371 enforceConnectivityInternalPermission(); 1372 1373 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1374 (met ? ENABLED : DISABLED), networkType)); 1375 } 1376 1377 private void handleSetDependencyMet(int networkType, boolean met) { 1378 if (mNetTrackers[networkType] != null) { 1379 if (DBG) { 1380 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1381 } 1382 mNetTrackers[networkType].setDependencyMet(met); 1383 } 1384 } 1385 1386 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1387 @Override 1388 public void onUidRulesChanged(int uid, int uidRules) { 1389 // caller is NPMS, since we only register with them 1390 if (LOGD_RULES) { 1391 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1392 } 1393 1394 synchronized (mRulesLock) { 1395 // skip update when we've already applied rules 1396 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1397 if (oldRules == uidRules) return; 1398 1399 mUidRules.put(uid, uidRules); 1400 } 1401 1402 // TODO: notify UID when it has requested targeted updates 1403 } 1404 1405 @Override 1406 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1407 // caller is NPMS, since we only register with them 1408 if (LOGD_RULES) { 1409 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1410 } 1411 1412 synchronized (mRulesLock) { 1413 mMeteredIfaces.clear(); 1414 for (String iface : meteredIfaces) { 1415 mMeteredIfaces.add(iface); 1416 } 1417 } 1418 } 1419 1420 @Override 1421 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1422 // caller is NPMS, since we only register with them 1423 if (LOGD_RULES) { 1424 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1425 } 1426 1427 // kick off connectivity change broadcast for active network, since 1428 // global background policy change is radical. 1429 // TODO: Dead code; remove. 1430 // 1431 // final int networkType = mActiveDefaultNetwork; 1432 // if (isNetworkTypeValid(networkType)) { 1433 // final NetworkStateTracker tracker = mNetTrackers[networkType]; 1434 // if (tracker != null) { 1435 // final NetworkInfo info = tracker.getNetworkInfo(); 1436 // if (info != null && info.isConnected()) { 1437 // sendConnectedBroadcast(info); 1438 // } 1439 // } 1440 // } 1441 } 1442 }; 1443 1444 @Override 1445 public void setPolicyDataEnable(int networkType, boolean enabled) { 1446 // only someone like NPMS should only be calling us 1447 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1448 1449 mHandler.sendMessage(mHandler.obtainMessage( 1450 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1451 } 1452 1453 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1454 // TODO - handle this passing to factories 1455// if (isNetworkTypeValid(networkType)) { 1456// final NetworkStateTracker tracker = mNetTrackers[networkType]; 1457// if (tracker != null) { 1458// tracker.setPolicyDataEnable(enabled); 1459// } 1460// } 1461 } 1462 1463 private void enforceInternetPermission() { 1464 mContext.enforceCallingOrSelfPermission( 1465 android.Manifest.permission.INTERNET, 1466 "ConnectivityService"); 1467 } 1468 1469 private void enforceAccessPermission() { 1470 mContext.enforceCallingOrSelfPermission( 1471 android.Manifest.permission.ACCESS_NETWORK_STATE, 1472 "ConnectivityService"); 1473 } 1474 1475 private void enforceChangePermission() { 1476 mContext.enforceCallingOrSelfPermission( 1477 android.Manifest.permission.CHANGE_NETWORK_STATE, 1478 "ConnectivityService"); 1479 } 1480 1481 private void enforceTetherAccessPermission() { 1482 mContext.enforceCallingOrSelfPermission( 1483 android.Manifest.permission.ACCESS_NETWORK_STATE, 1484 "ConnectivityService"); 1485 } 1486 1487 private void enforceConnectivityInternalPermission() { 1488 mContext.enforceCallingOrSelfPermission( 1489 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1490 "ConnectivityService"); 1491 } 1492 1493 public void sendConnectedBroadcast(NetworkInfo info) { 1494 enforceConnectivityInternalPermission(); 1495 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1496 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1497 } 1498 1499 private void sendInetConditionBroadcast(NetworkInfo info) { 1500 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1501 } 1502 1503 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1504 if (mLockdownTracker != null) { 1505 info = mLockdownTracker.augmentNetworkInfo(info); 1506 } 1507 1508 Intent intent = new Intent(bcastType); 1509 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1510 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1511 if (info.isFailover()) { 1512 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1513 info.setFailover(false); 1514 } 1515 if (info.getReason() != null) { 1516 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1517 } 1518 if (info.getExtraInfo() != null) { 1519 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1520 info.getExtraInfo()); 1521 } 1522 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1523 return intent; 1524 } 1525 1526 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1527 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1528 } 1529 1530 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1531 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1532 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1533 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1534 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1535 final long ident = Binder.clearCallingIdentity(); 1536 try { 1537 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1538 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1539 } finally { 1540 Binder.restoreCallingIdentity(ident); 1541 } 1542 } 1543 1544 private void sendStickyBroadcast(Intent intent) { 1545 synchronized(this) { 1546 if (!mSystemReady) { 1547 mInitialBroadcast = new Intent(intent); 1548 } 1549 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1550 if (DBG) { 1551 log("sendStickyBroadcast: action=" + intent.getAction()); 1552 } 1553 1554 final long ident = Binder.clearCallingIdentity(); 1555 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1556 final IBatteryStats bs = BatteryStatsService.getService(); 1557 try { 1558 NetworkInfo ni = intent.getParcelableExtra( 1559 ConnectivityManager.EXTRA_NETWORK_INFO); 1560 bs.noteConnectivityChanged(intent.getIntExtra( 1561 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1562 ni != null ? ni.getState().toString() : "?"); 1563 } catch (RemoteException e) { 1564 } 1565 } 1566 try { 1567 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1568 } finally { 1569 Binder.restoreCallingIdentity(ident); 1570 } 1571 } 1572 } 1573 1574 void systemReady() { 1575 // start network sampling .. 1576 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 1577 intent.setPackage(mContext.getPackageName()); 1578 1579 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 1580 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 1581 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 1582 1583 loadGlobalProxy(); 1584 1585 synchronized(this) { 1586 mSystemReady = true; 1587 if (mInitialBroadcast != null) { 1588 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1589 mInitialBroadcast = null; 1590 } 1591 } 1592 // load the global proxy at startup 1593 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1594 1595 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1596 // for user to unlock device. 1597 if (!updateLockdownVpn()) { 1598 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1599 mContext.registerReceiver(mUserPresentReceiver, filter); 1600 } 1601 1602 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1603 1604 mPermissionMonitor.startMonitoring(); 1605 } 1606 1607 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1608 @Override 1609 public void onReceive(Context context, Intent intent) { 1610 // Try creating lockdown tracker, since user present usually means 1611 // unlocked keystore. 1612 if (updateLockdownVpn()) { 1613 mContext.unregisterReceiver(this); 1614 } 1615 } 1616 }; 1617 1618 /** @hide */ 1619 @Override 1620 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1621 enforceConnectivityInternalPermission(); 1622 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1623// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1624 } 1625 1626 /** 1627 * Setup data activity tracking for the given network. 1628 * 1629 * Every {@code setupDataActivityTracking} should be paired with a 1630 * {@link #removeDataActivityTracking} for cleanup. 1631 */ 1632 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1633 final String iface = networkAgent.linkProperties.getInterfaceName(); 1634 1635 final int timeout; 1636 int type = ConnectivityManager.TYPE_NONE; 1637 1638 if (networkAgent.networkCapabilities.hasTransport( 1639 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1640 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1641 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1642 5); 1643 type = ConnectivityManager.TYPE_MOBILE; 1644 } else if (networkAgent.networkCapabilities.hasTransport( 1645 NetworkCapabilities.TRANSPORT_WIFI)) { 1646 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1647 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1648 0); 1649 type = ConnectivityManager.TYPE_WIFI; 1650 } else { 1651 // do not track any other networks 1652 timeout = 0; 1653 } 1654 1655 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1656 try { 1657 mNetd.addIdleTimer(iface, timeout, type); 1658 } catch (Exception e) { 1659 // You shall not crash! 1660 loge("Exception in setupDataActivityTracking " + e); 1661 } 1662 } 1663 } 1664 1665 /** 1666 * Remove data activity tracking when network disconnects. 1667 */ 1668 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1669 final String iface = networkAgent.linkProperties.getInterfaceName(); 1670 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1671 1672 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1673 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1674 try { 1675 // the call fails silently if no idletimer setup for this interface 1676 mNetd.removeIdleTimer(iface); 1677 } catch (Exception e) { 1678 loge("Exception in removeDataActivityTracking " + e); 1679 } 1680 } 1681 } 1682 1683 /** 1684 * Reads the network specific MTU size from reources. 1685 * and set it on it's iface. 1686 */ 1687 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1688 final String iface = newLp.getInterfaceName(); 1689 final int mtu = newLp.getMtu(); 1690 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1691 if (VDBG) log("identical MTU - not setting"); 1692 return; 1693 } 1694 1695 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1696 loge("Unexpected mtu value: " + mtu + ", " + iface); 1697 return; 1698 } 1699 1700 // Cannot set MTU without interface name 1701 if (TextUtils.isEmpty(iface)) { 1702 loge("Setting MTU size with null iface."); 1703 return; 1704 } 1705 1706 try { 1707 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1708 mNetd.setMtu(iface, mtu); 1709 } catch (Exception e) { 1710 Slog.e(TAG, "exception in setMtu()" + e); 1711 } 1712 } 1713 1714 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1715 1716 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1717 if (isDefaultNetwork(nai) == false) { 1718 return; 1719 } 1720 1721 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1722 String[] values = null; 1723 if (tcpBufferSizes != null) { 1724 values = tcpBufferSizes.split(","); 1725 } 1726 1727 if (values == null || values.length != 6) { 1728 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1729 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1730 values = tcpBufferSizes.split(","); 1731 } 1732 1733 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1734 1735 try { 1736 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1737 1738 final String prefix = "/sys/kernel/ipv4/tcp_"; 1739 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1740 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1741 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1742 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1743 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1744 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1745 mCurrentTcpBufferSizes = tcpBufferSizes; 1746 } catch (IOException e) { 1747 loge("Can't set TCP buffer sizes:" + e); 1748 } 1749 1750 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 1751 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 1752 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1753 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 1754 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1755 if (rwndValue != 0) { 1756 SystemProperties.set(sysctlKey, rwndValue.toString()); 1757 } 1758 } 1759 1760 private void flushVmDnsCache() { 1761 /* 1762 * Tell the VMs to toss their DNS caches 1763 */ 1764 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1765 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1766 /* 1767 * Connectivity events can happen before boot has completed ... 1768 */ 1769 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1770 final long ident = Binder.clearCallingIdentity(); 1771 try { 1772 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1773 } finally { 1774 Binder.restoreCallingIdentity(ident); 1775 } 1776 } 1777 1778 @Override 1779 public int getRestoreDefaultNetworkDelay(int networkType) { 1780 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1781 NETWORK_RESTORE_DELAY_PROP_NAME); 1782 if(restoreDefaultNetworkDelayStr != null && 1783 restoreDefaultNetworkDelayStr.length() != 0) { 1784 try { 1785 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1786 } catch (NumberFormatException e) { 1787 } 1788 } 1789 // if the system property isn't set, use the value for the apn type 1790 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1791 1792 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1793 (mNetConfigs[networkType] != null)) { 1794 ret = mNetConfigs[networkType].restoreTime; 1795 } 1796 return ret; 1797 } 1798 1799 @Override 1800 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1801 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1802 if (mContext.checkCallingOrSelfPermission( 1803 android.Manifest.permission.DUMP) 1804 != PackageManager.PERMISSION_GRANTED) { 1805 pw.println("Permission Denial: can't dump ConnectivityService " + 1806 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1807 Binder.getCallingUid()); 1808 return; 1809 } 1810 1811 pw.println("NetworkFactories for:"); 1812 pw.increaseIndent(); 1813 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1814 pw.println(nfi.name); 1815 } 1816 pw.decreaseIndent(); 1817 pw.println(); 1818 1819 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1820 pw.print("Active default network: "); 1821 if (defaultNai == null) { 1822 pw.println("none"); 1823 } else { 1824 pw.println(defaultNai.network.netId); 1825 } 1826 pw.println(); 1827 1828 pw.println("Current Networks:"); 1829 pw.increaseIndent(); 1830 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1831 pw.println(nai.toString()); 1832 pw.increaseIndent(); 1833 pw.println("Requests:"); 1834 pw.increaseIndent(); 1835 for (int i = 0; i < nai.networkRequests.size(); i++) { 1836 pw.println(nai.networkRequests.valueAt(i).toString()); 1837 } 1838 pw.decreaseIndent(); 1839 pw.println("Lingered:"); 1840 pw.increaseIndent(); 1841 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1842 pw.decreaseIndent(); 1843 pw.decreaseIndent(); 1844 } 1845 pw.decreaseIndent(); 1846 pw.println(); 1847 1848 pw.println("Network Requests:"); 1849 pw.increaseIndent(); 1850 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1851 pw.println(nri.toString()); 1852 } 1853 pw.println(); 1854 pw.decreaseIndent(); 1855 1856 pw.println("mLegacyTypeTracker:"); 1857 pw.increaseIndent(); 1858 mLegacyTypeTracker.dump(pw); 1859 pw.decreaseIndent(); 1860 pw.println(); 1861 1862 synchronized (this) { 1863 pw.println("NetworkTransitionWakeLock is currently " + 1864 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 1865 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 1866 } 1867 pw.println(); 1868 1869 mTethering.dump(fd, pw, args); 1870 1871 if (mInetLog != null) { 1872 pw.println(); 1873 pw.println("Inet condition reports:"); 1874 pw.increaseIndent(); 1875 for(int i = 0; i < mInetLog.size(); i++) { 1876 pw.println(mInetLog.get(i)); 1877 } 1878 pw.decreaseIndent(); 1879 } 1880 } 1881 1882 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1883 if (nai.network == null) return false; 1884 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1885 if (officialNai != null && officialNai.equals(nai)) return true; 1886 if (officialNai != null || VDBG) { 1887 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1888 " - " + nai); 1889 } 1890 return false; 1891 } 1892 1893 private boolean isRequest(NetworkRequest request) { 1894 return mNetworkRequests.get(request).isRequest; 1895 } 1896 1897 // must be stateless - things change under us. 1898 private class NetworkStateTrackerHandler extends Handler { 1899 public NetworkStateTrackerHandler(Looper looper) { 1900 super(looper); 1901 } 1902 1903 @Override 1904 public void handleMessage(Message msg) { 1905 NetworkInfo info; 1906 switch (msg.what) { 1907 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1908 handleAsyncChannelHalfConnect(msg); 1909 break; 1910 } 1911 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1912 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1913 if (nai != null) nai.asyncChannel.disconnect(); 1914 break; 1915 } 1916 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1917 handleAsyncChannelDisconnected(msg); 1918 break; 1919 } 1920 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1921 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1922 if (nai == null) { 1923 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1924 } else { 1925 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1926 } 1927 break; 1928 } 1929 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1930 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1931 if (nai == null) { 1932 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1933 } else { 1934 if (VDBG) { 1935 log("Update of LinkProperties for " + nai.name() + 1936 "; created=" + nai.created); 1937 } 1938 LinkProperties oldLp = nai.linkProperties; 1939 synchronized (nai) { 1940 nai.linkProperties = (LinkProperties)msg.obj; 1941 } 1942 if (nai.created) updateLinkProperties(nai, oldLp); 1943 } 1944 break; 1945 } 1946 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1947 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1948 if (nai == null) { 1949 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1950 break; 1951 } 1952 info = (NetworkInfo) msg.obj; 1953 updateNetworkInfo(nai, info); 1954 break; 1955 } 1956 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1957 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1958 if (nai == null) { 1959 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1960 break; 1961 } 1962 Integer score = (Integer) msg.obj; 1963 if (score != null) updateNetworkScore(nai, score.intValue()); 1964 break; 1965 } 1966 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1967 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1968 if (nai == null) { 1969 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1970 break; 1971 } 1972 try { 1973 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1974 } catch (Exception e) { 1975 // Never crash! 1976 loge("Exception in addVpnUidRanges: " + e); 1977 } 1978 break; 1979 } 1980 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1981 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1982 if (nai == null) { 1983 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1984 break; 1985 } 1986 try { 1987 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1988 } catch (Exception e) { 1989 // Never crash! 1990 loge("Exception in removeVpnUidRanges: " + e); 1991 } 1992 break; 1993 } 1994 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1995 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1996 if (nai == null) { 1997 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1998 break; 1999 } 2000 if (nai.created && !nai.networkMisc.explicitlySelected) { 2001 loge("ERROR: created network explicitly selected."); 2002 } 2003 nai.networkMisc.explicitlySelected = true; 2004 break; 2005 } 2006 case NetworkMonitor.EVENT_NETWORK_TESTED: { 2007 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2008 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_VALIDATED")) { 2009 boolean valid = (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2010 if (valid) { 2011 if (DBG) log("Validated " + nai.name()); 2012 if (!nai.validated) { 2013 nai.validated = true; 2014 rematchNetworkAndRequests(nai, NascentState.JUST_VALIDATED, 2015 ReapUnvalidatedNetworks.REAP); 2016 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2017 sendUpdatedScoreToFactories(nai); 2018 } 2019 } 2020 updateInetCondition(nai, valid); 2021 // Let the NetworkAgent know the state of its network 2022 nai.asyncChannel.sendMessage( 2023 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2024 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2025 0, null); 2026 } 2027 break; 2028 } 2029 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2030 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2031 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 2032 handleLingerComplete(nai); 2033 } 2034 break; 2035 } 2036 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2037 if (msg.arg1 == 0) { 2038 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 2039 } else { 2040 NetworkAgentInfo nai = null; 2041 synchronized (mNetworkForNetId) { 2042 nai = mNetworkForNetId.get(msg.arg2); 2043 } 2044 if (nai == null) { 2045 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2046 break; 2047 } 2048 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 2049 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 2050 } 2051 break; 2052 } 2053 case NetworkStateTracker.EVENT_STATE_CHANGED: { 2054 info = (NetworkInfo) msg.obj; 2055 NetworkInfo.State state = info.getState(); 2056 2057 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 2058 (state == NetworkInfo.State.DISCONNECTED) || 2059 (state == NetworkInfo.State.SUSPENDED)) { 2060 log("ConnectivityChange for " + 2061 info.getTypeName() + ": " + 2062 state + "/" + info.getDetailedState()); 2063 } 2064 2065 EventLogTags.writeConnectivityStateChanged( 2066 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 2067 2068 if (info.isConnectedToProvisioningNetwork()) { 2069 /** 2070 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 2071 * for now its an in between network, its a network that 2072 * is actually a default network but we don't want it to be 2073 * announced as such to keep background applications from 2074 * trying to use it. It turns out that some still try so we 2075 * take the additional step of clearing any default routes 2076 * to the link that may have incorrectly setup by the lower 2077 * levels. 2078 */ 2079 LinkProperties lp = getLinkPropertiesForType(info.getType()); 2080 if (DBG) { 2081 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 2082 } 2083 2084 // Clear any default routes setup by the radio so 2085 // any activity by applications trying to use this 2086 // connection will fail until the provisioning network 2087 // is enabled. 2088 /* 2089 for (RouteInfo r : lp.getRoutes()) { 2090 removeRoute(lp, r, TO_DEFAULT_TABLE, 2091 mNetTrackers[info.getType()].getNetwork().netId); 2092 } 2093 */ 2094 } else if (state == NetworkInfo.State.DISCONNECTED) { 2095 } else if (state == NetworkInfo.State.SUSPENDED) { 2096 } else if (state == NetworkInfo.State.CONNECTED) { 2097 // handleConnect(info); 2098 } 2099 notifyLockdownVpn(null); 2100 break; 2101 } 2102 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 2103 info = (NetworkInfo) msg.obj; 2104 // TODO: Temporary allowing network configuration 2105 // change not resetting sockets. 2106 // @see bug/4455071 2107 /* 2108 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 2109 false); 2110 */ 2111 break; 2112 } 2113 } 2114 } 2115 } 2116 2117 // Cancel any lingering so the linger timeout doesn't teardown a network. 2118 // This should be called when a network begins satisfying a NetworkRequest. 2119 // Note: depending on what state the NetworkMonitor is in (e.g., 2120 // if it's awaiting captive portal login, or if validation failed), this 2121 // may trigger a re-evaluation of the network. 2122 private void unlinger(NetworkAgentInfo nai) { 2123 if (VDBG) log("Canceling linger of " + nai.name()); 2124 nai.networkLingered.clear(); 2125 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2126 } 2127 2128 private void handleAsyncChannelHalfConnect(Message msg) { 2129 AsyncChannel ac = (AsyncChannel) msg.obj; 2130 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2131 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2132 if (VDBG) log("NetworkFactory connected"); 2133 // A network factory has connected. Send it all current NetworkRequests. 2134 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2135 if (nri.isRequest == false) continue; 2136 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2137 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2138 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2139 } 2140 } else { 2141 loge("Error connecting NetworkFactory"); 2142 mNetworkFactoryInfos.remove(msg.obj); 2143 } 2144 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2145 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2146 if (VDBG) log("NetworkAgent connected"); 2147 // A network agent has requested a connection. Establish the connection. 2148 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2149 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2150 } else { 2151 loge("Error connecting NetworkAgent"); 2152 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2153 if (nai != null) { 2154 synchronized (mNetworkForNetId) { 2155 mNetworkForNetId.remove(nai.network.netId); 2156 } 2157 // Just in case. 2158 mLegacyTypeTracker.remove(nai); 2159 } 2160 } 2161 } 2162 } 2163 2164 private void handleAsyncChannelDisconnected(Message msg) { 2165 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2166 if (nai != null) { 2167 if (DBG) { 2168 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2169 } 2170 // A network agent has disconnected. 2171 if (nai.created) { 2172 // Tell netd to clean up the configuration for this network 2173 // (routing rules, DNS, etc). 2174 try { 2175 mNetd.removeNetwork(nai.network.netId); 2176 } catch (Exception e) { 2177 loge("Exception removing network: " + e); 2178 } 2179 } 2180 // TODO - if we move the logic to the network agent (have them disconnect 2181 // because they lost all their requests or because their score isn't good) 2182 // then they would disconnect organically, report their new state and then 2183 // disconnect the channel. 2184 if (nai.networkInfo.isConnected()) { 2185 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2186 null, null); 2187 } 2188 if (isDefaultNetwork(nai)) { 2189 mDefaultInetConditionPublished = 0; 2190 } 2191 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2192 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2193 mNetworkAgentInfos.remove(msg.replyTo); 2194 updateClat(null, nai.linkProperties, nai); 2195 mLegacyTypeTracker.remove(nai); 2196 synchronized (mNetworkForNetId) { 2197 mNetworkForNetId.remove(nai.network.netId); 2198 } 2199 // Since we've lost the network, go through all the requests that 2200 // it was satisfying and see if any other factory can satisfy them. 2201 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2202 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2203 for (int i = 0; i < nai.networkRequests.size(); i++) { 2204 NetworkRequest request = nai.networkRequests.valueAt(i); 2205 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2206 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2207 if (DBG) { 2208 log("Checking for replacement network to handle request " + request ); 2209 } 2210 mNetworkForRequestId.remove(request.requestId); 2211 sendUpdatedScoreToFactories(request, 0); 2212 NetworkAgentInfo alternative = null; 2213 for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) { 2214 if (existing.satisfies(request) && 2215 (alternative == null || 2216 alternative.getCurrentScore() < existing.getCurrentScore())) { 2217 alternative = existing; 2218 } 2219 } 2220 if (alternative != null) { 2221 if (DBG) log(" found replacement in " + alternative.name()); 2222 if (!toActivate.contains(alternative)) { 2223 toActivate.add(alternative); 2224 } 2225 } 2226 } 2227 } 2228 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2229 removeDataActivityTracking(nai); 2230 notifyLockdownVpn(nai); 2231 requestNetworkTransitionWakelock(nai.name()); 2232 } 2233 for (NetworkAgentInfo networkToActivate : toActivate) { 2234 unlinger(networkToActivate); 2235 rematchNetworkAndRequests(networkToActivate, NascentState.NOT_JUST_VALIDATED, 2236 ReapUnvalidatedNetworks.DONT_REAP); 2237 } 2238 } 2239 } 2240 2241 // If this method proves to be too slow then we can maintain a separate 2242 // pendingIntent => NetworkRequestInfo map. 2243 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2244 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2245 Intent intent = pendingIntent.getIntent(); 2246 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2247 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2248 if (existingPendingIntent != null && 2249 existingPendingIntent.getIntent().filterEquals(intent)) { 2250 return entry.getValue(); 2251 } 2252 } 2253 return null; 2254 } 2255 2256 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2257 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2258 2259 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2260 if (existingRequest != null) { // remove the existing request. 2261 if (DBG) log("Replacing " + existingRequest.request + " with " 2262 + nri.request + " because their intents matched."); 2263 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2264 } 2265 handleRegisterNetworkRequest(msg); 2266 } 2267 2268 private void handleRegisterNetworkRequest(Message msg) { 2269 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2270 2271 mNetworkRequests.put(nri.request, nri); 2272 2273 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2274 2275 // Check for the best currently alive network that satisfies this request 2276 NetworkAgentInfo bestNetwork = null; 2277 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2278 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2279 if (network.satisfies(nri.request)) { 2280 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2281 if (!nri.isRequest) { 2282 // Not setting bestNetwork here as a listening NetworkRequest may be 2283 // satisfied by multiple Networks. Instead the request is added to 2284 // each satisfying Network and notified about each. 2285 network.addRequest(nri.request); 2286 notifyNetworkCallback(network, nri); 2287 } else if (bestNetwork == null || 2288 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2289 bestNetwork = network; 2290 } 2291 } 2292 } 2293 if (bestNetwork != null) { 2294 if (DBG) log("using " + bestNetwork.name()); 2295 unlinger(bestNetwork); 2296 bestNetwork.addRequest(nri.request); 2297 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2298 notifyNetworkCallback(bestNetwork, nri); 2299 if (nri.request.legacyType != TYPE_NONE) { 2300 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2301 } 2302 } 2303 2304 if (nri.isRequest) { 2305 if (DBG) log("sending new NetworkRequest to factories"); 2306 final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore(); 2307 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2308 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2309 0, nri.request); 2310 } 2311 } 2312 } 2313 2314 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2315 int callingUid) { 2316 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2317 if (nri != null) { 2318 handleReleaseNetworkRequest(nri.request, callingUid); 2319 } 2320 } 2321 2322 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2323 NetworkRequestInfo nri = mNetworkRequests.get(request); 2324 if (nri != null) { 2325 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2326 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2327 return; 2328 } 2329 if (DBG) log("releasing NetworkRequest " + request); 2330 nri.unlinkDeathRecipient(); 2331 mNetworkRequests.remove(request); 2332 if (nri.isRequest) { 2333 // Find all networks that are satisfying this request and remove the request 2334 // from their request lists. 2335 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2336 if (nai.networkRequests.get(nri.request.requestId) != null) { 2337 nai.networkRequests.remove(nri.request.requestId); 2338 if (DBG) { 2339 log(" Removing from current network " + nai.name() + 2340 ", leaving " + nai.networkRequests.size() + 2341 " requests."); 2342 } 2343 // check if has any requests remaining and if not, 2344 // disconnect (unless it's a VPN). 2345 boolean keep = nai.isVPN(); 2346 for (int i = 0; i < nai.networkRequests.size() && !keep; i++) { 2347 NetworkRequest r = nai.networkRequests.valueAt(i); 2348 if (isRequest(r)) keep = true; 2349 } 2350 if (!keep) { 2351 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2352 nai.asyncChannel.disconnect(); 2353 } 2354 } 2355 } 2356 2357 // Maintain the illusion. When this request arrived, we might have pretended 2358 // that a network connected to serve it, even though the network was already 2359 // connected. Now that this request has gone away, we might have to pretend 2360 // that the network disconnected. LegacyTypeTracker will generate that 2361 // phantom disconnect for this type. 2362 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2363 if (nai != null) { 2364 mNetworkForRequestId.remove(nri.request.requestId); 2365 if (nri.request.legacyType != TYPE_NONE) { 2366 mLegacyTypeTracker.remove(nri.request.legacyType, nai); 2367 } 2368 } 2369 2370 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2371 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2372 nri.request); 2373 } 2374 } else { 2375 // listens don't have a singular affectedNetwork. Check all networks to see 2376 // if this listen request applies and remove it. 2377 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2378 nai.networkRequests.remove(nri.request.requestId); 2379 } 2380 } 2381 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2382 } 2383 } 2384 2385 private class InternalHandler extends Handler { 2386 public InternalHandler(Looper looper) { 2387 super(looper); 2388 } 2389 2390 @Override 2391 public void handleMessage(Message msg) { 2392 switch (msg.what) { 2393 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2394 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2395 String causedBy = null; 2396 synchronized (ConnectivityService.this) { 2397 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2398 mNetTransitionWakeLock.isHeld()) { 2399 mNetTransitionWakeLock.release(); 2400 causedBy = mNetTransitionWakeLockCausedBy; 2401 } else { 2402 break; 2403 } 2404 } 2405 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2406 log("Failed to find a new network - expiring NetTransition Wakelock"); 2407 } else { 2408 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2409 " cleared because we found a replacement network"); 2410 } 2411 break; 2412 } 2413 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2414 handleDeprecatedGlobalHttpProxy(); 2415 break; 2416 } 2417 case EVENT_SET_DEPENDENCY_MET: { 2418 boolean met = (msg.arg1 == ENABLED); 2419 handleSetDependencyMet(msg.arg2, met); 2420 break; 2421 } 2422 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2423 Intent intent = (Intent)msg.obj; 2424 sendStickyBroadcast(intent); 2425 break; 2426 } 2427 case EVENT_SET_POLICY_DATA_ENABLE: { 2428 final int networkType = msg.arg1; 2429 final boolean enabled = msg.arg2 == ENABLED; 2430 handleSetPolicyDataEnable(networkType, enabled); 2431 break; 2432 } 2433 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 2434 int tag = mEnableFailFastMobileDataTag.get(); 2435 if (msg.arg1 == tag) { 2436 MobileDataStateTracker mobileDst = 2437 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 2438 if (mobileDst != null) { 2439 mobileDst.setEnableFailFastMobileData(msg.arg2); 2440 } 2441 } else { 2442 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 2443 + " != tag:" + tag); 2444 } 2445 break; 2446 } 2447 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 2448 handleNetworkSamplingTimeout(); 2449 break; 2450 } 2451 case EVENT_PROXY_HAS_CHANGED: { 2452 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2453 break; 2454 } 2455 case EVENT_REGISTER_NETWORK_FACTORY: { 2456 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2457 break; 2458 } 2459 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2460 handleUnregisterNetworkFactory((Messenger)msg.obj); 2461 break; 2462 } 2463 case EVENT_REGISTER_NETWORK_AGENT: { 2464 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2465 break; 2466 } 2467 case EVENT_REGISTER_NETWORK_REQUEST: 2468 case EVENT_REGISTER_NETWORK_LISTENER: { 2469 handleRegisterNetworkRequest(msg); 2470 break; 2471 } 2472 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: { 2473 handleRegisterNetworkRequestWithIntent(msg); 2474 break; 2475 } 2476 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2477 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2478 break; 2479 } 2480 case EVENT_RELEASE_NETWORK_REQUEST: { 2481 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2482 break; 2483 } 2484 case EVENT_SYSTEM_READY: { 2485 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2486 nai.networkMonitor.systemReady = true; 2487 } 2488 break; 2489 } 2490 } 2491 } 2492 } 2493 2494 // javadoc from interface 2495 public int tether(String iface) { 2496 ConnectivityManager.enforceTetherChangePermission(mContext); 2497 if (isTetheringSupported()) { 2498 return mTethering.tether(iface); 2499 } else { 2500 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2501 } 2502 } 2503 2504 // javadoc from interface 2505 public int untether(String iface) { 2506 ConnectivityManager.enforceTetherChangePermission(mContext); 2507 2508 if (isTetheringSupported()) { 2509 return mTethering.untether(iface); 2510 } else { 2511 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2512 } 2513 } 2514 2515 // javadoc from interface 2516 public int getLastTetherError(String iface) { 2517 enforceTetherAccessPermission(); 2518 2519 if (isTetheringSupported()) { 2520 return mTethering.getLastTetherError(iface); 2521 } else { 2522 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2523 } 2524 } 2525 2526 // TODO - proper iface API for selection by property, inspection, etc 2527 public String[] getTetherableUsbRegexs() { 2528 enforceTetherAccessPermission(); 2529 if (isTetheringSupported()) { 2530 return mTethering.getTetherableUsbRegexs(); 2531 } else { 2532 return new String[0]; 2533 } 2534 } 2535 2536 public String[] getTetherableWifiRegexs() { 2537 enforceTetherAccessPermission(); 2538 if (isTetheringSupported()) { 2539 return mTethering.getTetherableWifiRegexs(); 2540 } else { 2541 return new String[0]; 2542 } 2543 } 2544 2545 public String[] getTetherableBluetoothRegexs() { 2546 enforceTetherAccessPermission(); 2547 if (isTetheringSupported()) { 2548 return mTethering.getTetherableBluetoothRegexs(); 2549 } else { 2550 return new String[0]; 2551 } 2552 } 2553 2554 public int setUsbTethering(boolean enable) { 2555 ConnectivityManager.enforceTetherChangePermission(mContext); 2556 if (isTetheringSupported()) { 2557 return mTethering.setUsbTethering(enable); 2558 } else { 2559 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2560 } 2561 } 2562 2563 // TODO - move iface listing, queries, etc to new module 2564 // javadoc from interface 2565 public String[] getTetherableIfaces() { 2566 enforceTetherAccessPermission(); 2567 return mTethering.getTetherableIfaces(); 2568 } 2569 2570 public String[] getTetheredIfaces() { 2571 enforceTetherAccessPermission(); 2572 return mTethering.getTetheredIfaces(); 2573 } 2574 2575 public String[] getTetheringErroredIfaces() { 2576 enforceTetherAccessPermission(); 2577 return mTethering.getErroredIfaces(); 2578 } 2579 2580 public String[] getTetheredDhcpRanges() { 2581 enforceConnectivityInternalPermission(); 2582 return mTethering.getTetheredDhcpRanges(); 2583 } 2584 2585 // if ro.tether.denied = true we default to no tethering 2586 // gservices could set the secure setting to 1 though to enable it on a build where it 2587 // had previously been turned off. 2588 public boolean isTetheringSupported() { 2589 enforceTetherAccessPermission(); 2590 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2591 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2592 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2593 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2594 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2595 mTethering.getTetherableWifiRegexs().length != 0 || 2596 mTethering.getTetherableBluetoothRegexs().length != 0) && 2597 mTethering.getUpstreamIfaceTypes().length != 0); 2598 } 2599 2600 // Called when we lose the default network and have no replacement yet. 2601 // This will automatically be cleared after X seconds or a new default network 2602 // becomes CONNECTED, whichever happens first. The timer is started by the 2603 // first caller and not restarted by subsequent callers. 2604 private void requestNetworkTransitionWakelock(String forWhom) { 2605 int serialNum = 0; 2606 synchronized (this) { 2607 if (mNetTransitionWakeLock.isHeld()) return; 2608 serialNum = ++mNetTransitionWakeLockSerialNumber; 2609 mNetTransitionWakeLock.acquire(); 2610 mNetTransitionWakeLockCausedBy = forWhom; 2611 } 2612 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2613 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2614 mNetTransitionWakeLockTimeout); 2615 return; 2616 } 2617 2618 // 100 percent is full good, 0 is full bad. 2619 public void reportInetCondition(int networkType, int percentage) { 2620 if (percentage > 50) return; // don't handle good network reports 2621 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2622 if (nai != null) reportBadNetwork(nai.network); 2623 } 2624 2625 public void reportBadNetwork(Network network) { 2626 enforceAccessPermission(); 2627 enforceInternetPermission(); 2628 2629 if (network == null) return; 2630 2631 final int uid = Binder.getCallingUid(); 2632 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2633 if (nai == null) return; 2634 if (DBG) log("reportBadNetwork(" + nai.name() + ") by " + uid); 2635 synchronized (nai) { 2636 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2637 // which isn't meant to work on uncreated networks. 2638 if (!nai.created) return; 2639 2640 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2641 2642 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2643 } 2644 } 2645 2646 public ProxyInfo getProxy() { 2647 // this information is already available as a world read/writable jvm property 2648 // so this API change wouldn't have a benifit. It also breaks the passing 2649 // of proxy info to all the JVMs. 2650 // enforceAccessPermission(); 2651 synchronized (mProxyLock) { 2652 ProxyInfo ret = mGlobalProxy; 2653 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2654 return ret; 2655 } 2656 } 2657 2658 public void setGlobalProxy(ProxyInfo proxyProperties) { 2659 enforceConnectivityInternalPermission(); 2660 2661 synchronized (mProxyLock) { 2662 if (proxyProperties == mGlobalProxy) return; 2663 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2664 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2665 2666 String host = ""; 2667 int port = 0; 2668 String exclList = ""; 2669 String pacFileUrl = ""; 2670 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2671 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2672 if (!proxyProperties.isValid()) { 2673 if (DBG) 2674 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2675 return; 2676 } 2677 mGlobalProxy = new ProxyInfo(proxyProperties); 2678 host = mGlobalProxy.getHost(); 2679 port = mGlobalProxy.getPort(); 2680 exclList = mGlobalProxy.getExclusionListAsString(); 2681 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2682 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2683 } 2684 } else { 2685 mGlobalProxy = null; 2686 } 2687 ContentResolver res = mContext.getContentResolver(); 2688 final long token = Binder.clearCallingIdentity(); 2689 try { 2690 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2691 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2692 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2693 exclList); 2694 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2695 } finally { 2696 Binder.restoreCallingIdentity(token); 2697 } 2698 2699 if (mGlobalProxy == null) { 2700 proxyProperties = mDefaultProxy; 2701 } 2702 sendProxyBroadcast(proxyProperties); 2703 } 2704 } 2705 2706 private void loadGlobalProxy() { 2707 ContentResolver res = mContext.getContentResolver(); 2708 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2709 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2710 String exclList = Settings.Global.getString(res, 2711 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2712 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2713 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2714 ProxyInfo proxyProperties; 2715 if (!TextUtils.isEmpty(pacFileUrl)) { 2716 proxyProperties = new ProxyInfo(pacFileUrl); 2717 } else { 2718 proxyProperties = new ProxyInfo(host, port, exclList); 2719 } 2720 if (!proxyProperties.isValid()) { 2721 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2722 return; 2723 } 2724 2725 synchronized (mProxyLock) { 2726 mGlobalProxy = proxyProperties; 2727 } 2728 } 2729 } 2730 2731 public ProxyInfo getGlobalProxy() { 2732 // this information is already available as a world read/writable jvm property 2733 // so this API change wouldn't have a benifit. It also breaks the passing 2734 // of proxy info to all the JVMs. 2735 // enforceAccessPermission(); 2736 synchronized (mProxyLock) { 2737 return mGlobalProxy; 2738 } 2739 } 2740 2741 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2742 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2743 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2744 proxy = null; 2745 } 2746 synchronized (mProxyLock) { 2747 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2748 if (mDefaultProxy == proxy) return; // catches repeated nulls 2749 if (proxy != null && !proxy.isValid()) { 2750 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2751 return; 2752 } 2753 2754 // This call could be coming from the PacManager, containing the port of the local 2755 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2756 // global (to get the correct local port), and send a broadcast. 2757 // TODO: Switch PacManager to have its own message to send back rather than 2758 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2759 if ((mGlobalProxy != null) && (proxy != null) 2760 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2761 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2762 mGlobalProxy = proxy; 2763 sendProxyBroadcast(mGlobalProxy); 2764 return; 2765 } 2766 mDefaultProxy = proxy; 2767 2768 if (mGlobalProxy != null) return; 2769 if (!mDefaultProxyDisabled) { 2770 sendProxyBroadcast(proxy); 2771 } 2772 } 2773 } 2774 2775 private void handleDeprecatedGlobalHttpProxy() { 2776 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2777 Settings.Global.HTTP_PROXY); 2778 if (!TextUtils.isEmpty(proxy)) { 2779 String data[] = proxy.split(":"); 2780 if (data.length == 0) { 2781 return; 2782 } 2783 2784 String proxyHost = data[0]; 2785 int proxyPort = 8080; 2786 if (data.length > 1) { 2787 try { 2788 proxyPort = Integer.parseInt(data[1]); 2789 } catch (NumberFormatException e) { 2790 return; 2791 } 2792 } 2793 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2794 setGlobalProxy(p); 2795 } 2796 } 2797 2798 private void sendProxyBroadcast(ProxyInfo proxy) { 2799 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2800 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2801 if (DBG) log("sending Proxy Broadcast for " + proxy); 2802 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2803 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2804 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2805 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2806 final long ident = Binder.clearCallingIdentity(); 2807 try { 2808 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2809 } finally { 2810 Binder.restoreCallingIdentity(ident); 2811 } 2812 } 2813 2814 private static class SettingsObserver extends ContentObserver { 2815 private int mWhat; 2816 private Handler mHandler; 2817 SettingsObserver(Handler handler, int what) { 2818 super(handler); 2819 mHandler = handler; 2820 mWhat = what; 2821 } 2822 2823 void observe(Context context) { 2824 ContentResolver resolver = context.getContentResolver(); 2825 resolver.registerContentObserver(Settings.Global.getUriFor( 2826 Settings.Global.HTTP_PROXY), false, this); 2827 } 2828 2829 @Override 2830 public void onChange(boolean selfChange) { 2831 mHandler.obtainMessage(mWhat).sendToTarget(); 2832 } 2833 } 2834 2835 private static void log(String s) { 2836 Slog.d(TAG, s); 2837 } 2838 2839 private static void loge(String s) { 2840 Slog.e(TAG, s); 2841 } 2842 2843 private static <T> T checkNotNull(T value, String message) { 2844 if (value == null) { 2845 throw new NullPointerException(message); 2846 } 2847 return value; 2848 } 2849 2850 /** 2851 * Prepare for a VPN application. 2852 * Permissions are checked in Vpn class. 2853 * @hide 2854 */ 2855 @Override 2856 public boolean prepareVpn(String oldPackage, String newPackage) { 2857 throwIfLockdownEnabled(); 2858 int user = UserHandle.getUserId(Binder.getCallingUid()); 2859 synchronized(mVpns) { 2860 return mVpns.get(user).prepare(oldPackage, newPackage); 2861 } 2862 } 2863 2864 /** 2865 * Set whether the current VPN package has the ability to launch VPNs without 2866 * user intervention. This method is used by system-privileged apps. 2867 * Permissions are checked in Vpn class. 2868 * @hide 2869 */ 2870 @Override 2871 public void setVpnPackageAuthorization(boolean authorized) { 2872 int user = UserHandle.getUserId(Binder.getCallingUid()); 2873 synchronized(mVpns) { 2874 mVpns.get(user).setPackageAuthorization(authorized); 2875 } 2876 } 2877 2878 /** 2879 * Configure a TUN interface and return its file descriptor. Parameters 2880 * are encoded and opaque to this class. This method is used by VpnBuilder 2881 * and not available in ConnectivityManager. Permissions are checked in 2882 * Vpn class. 2883 * @hide 2884 */ 2885 @Override 2886 public ParcelFileDescriptor establishVpn(VpnConfig config) { 2887 throwIfLockdownEnabled(); 2888 int user = UserHandle.getUserId(Binder.getCallingUid()); 2889 synchronized(mVpns) { 2890 return mVpns.get(user).establish(config); 2891 } 2892 } 2893 2894 /** 2895 * Start legacy VPN, controlling native daemons as needed. Creates a 2896 * secondary thread to perform connection work, returning quickly. 2897 */ 2898 @Override 2899 public void startLegacyVpn(VpnProfile profile) { 2900 throwIfLockdownEnabled(); 2901 final LinkProperties egress = getActiveLinkProperties(); 2902 if (egress == null) { 2903 throw new IllegalStateException("Missing active network connection"); 2904 } 2905 int user = UserHandle.getUserId(Binder.getCallingUid()); 2906 synchronized(mVpns) { 2907 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 2908 } 2909 } 2910 2911 /** 2912 * Return the information of the ongoing legacy VPN. This method is used 2913 * by VpnSettings and not available in ConnectivityManager. Permissions 2914 * are checked in Vpn class. 2915 * @hide 2916 */ 2917 @Override 2918 public LegacyVpnInfo getLegacyVpnInfo() { 2919 throwIfLockdownEnabled(); 2920 int user = UserHandle.getUserId(Binder.getCallingUid()); 2921 synchronized(mVpns) { 2922 return mVpns.get(user).getLegacyVpnInfo(); 2923 } 2924 } 2925 2926 /** 2927 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 2928 * not available in ConnectivityManager. 2929 * Permissions are checked in Vpn class. 2930 * @hide 2931 */ 2932 @Override 2933 public VpnConfig getVpnConfig() { 2934 int user = UserHandle.getUserId(Binder.getCallingUid()); 2935 synchronized(mVpns) { 2936 return mVpns.get(user).getVpnConfig(); 2937 } 2938 } 2939 2940 @Override 2941 public boolean updateLockdownVpn() { 2942 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 2943 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 2944 return false; 2945 } 2946 2947 // Tear down existing lockdown if profile was removed 2948 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 2949 if (mLockdownEnabled) { 2950 if (!mKeyStore.isUnlocked()) { 2951 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 2952 return false; 2953 } 2954 2955 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 2956 final VpnProfile profile = VpnProfile.decode( 2957 profileName, mKeyStore.get(Credentials.VPN + profileName)); 2958 int user = UserHandle.getUserId(Binder.getCallingUid()); 2959 synchronized(mVpns) { 2960 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 2961 profile)); 2962 } 2963 } else { 2964 setLockdownTracker(null); 2965 } 2966 2967 return true; 2968 } 2969 2970 /** 2971 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 2972 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 2973 */ 2974 private void setLockdownTracker(LockdownVpnTracker tracker) { 2975 // Shutdown any existing tracker 2976 final LockdownVpnTracker existing = mLockdownTracker; 2977 mLockdownTracker = null; 2978 if (existing != null) { 2979 existing.shutdown(); 2980 } 2981 2982 try { 2983 if (tracker != null) { 2984 mNetd.setFirewallEnabled(true); 2985 mNetd.setFirewallInterfaceRule("lo", true); 2986 mLockdownTracker = tracker; 2987 mLockdownTracker.init(); 2988 } else { 2989 mNetd.setFirewallEnabled(false); 2990 } 2991 } catch (RemoteException e) { 2992 // ignored; NMS lives inside system_server 2993 } 2994 } 2995 2996 private void throwIfLockdownEnabled() { 2997 if (mLockdownEnabled) { 2998 throw new IllegalStateException("Unavailable in lockdown mode"); 2999 } 3000 } 3001 3002 public void supplyMessenger(int networkType, Messenger messenger) { 3003 enforceConnectivityInternalPermission(); 3004 3005 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 3006 mNetTrackers[networkType].supplyMessenger(messenger); 3007 } 3008 } 3009 3010 public int findConnectionTypeForIface(String iface) { 3011 enforceConnectivityInternalPermission(); 3012 3013 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 3014 3015 synchronized(mNetworkForNetId) { 3016 for (int i = 0; i < mNetworkForNetId.size(); i++) { 3017 NetworkAgentInfo nai = mNetworkForNetId.valueAt(i); 3018 LinkProperties lp = nai.linkProperties; 3019 if (lp != null && iface.equals(lp.getInterfaceName()) && nai.networkInfo != null) { 3020 return nai.networkInfo.getType(); 3021 } 3022 } 3023 } 3024 return ConnectivityManager.TYPE_NONE; 3025 } 3026 3027 /** 3028 * Have mobile data fail fast if enabled. 3029 * 3030 * @param enabled DctConstants.ENABLED/DISABLED 3031 */ 3032 private void setEnableFailFastMobileData(int enabled) { 3033 int tag; 3034 3035 if (enabled == DctConstants.ENABLED) { 3036 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 3037 } else { 3038 tag = mEnableFailFastMobileDataTag.get(); 3039 } 3040 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 3041 enabled)); 3042 } 3043 3044 @Override 3045 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3046 // TODO: Remove? Any reason to trigger a provisioning check? 3047 return -1; 3048 } 3049 3050 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3051 private volatile boolean mIsNotificationVisible = false; 3052 3053 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3054 if (DBG) { 3055 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3056 + " action=" + action); 3057 } 3058 Intent intent = new Intent(action); 3059 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3060 // Concatenate the range of types onto the range of NetIDs. 3061 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3062 setProvNotificationVisibleIntent(visible, id, networkType, null, pendingIntent); 3063 } 3064 3065 /** 3066 * Show or hide network provisioning notificaitons. 3067 * 3068 * @param id an identifier that uniquely identifies this notification. This must match 3069 * between show and hide calls. We use the NetID value but for legacy callers 3070 * we concatenate the range of types with the range of NetIDs. 3071 */ 3072 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 3073 String extraInfo, PendingIntent intent) { 3074 if (DBG) { 3075 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 3076 networkType + " extraInfo=" + extraInfo); 3077 } 3078 3079 Resources r = Resources.getSystem(); 3080 NotificationManager notificationManager = (NotificationManager) mContext 3081 .getSystemService(Context.NOTIFICATION_SERVICE); 3082 3083 if (visible) { 3084 CharSequence title; 3085 CharSequence details; 3086 int icon; 3087 Notification notification = new Notification(); 3088 switch (networkType) { 3089 case ConnectivityManager.TYPE_WIFI: 3090 title = r.getString(R.string.wifi_available_sign_in, 0); 3091 details = r.getString(R.string.network_available_sign_in_detailed, 3092 extraInfo); 3093 icon = R.drawable.stat_notify_wifi_in_range; 3094 break; 3095 case ConnectivityManager.TYPE_MOBILE: 3096 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3097 title = r.getString(R.string.network_available_sign_in, 0); 3098 // TODO: Change this to pull from NetworkInfo once a printable 3099 // name has been added to it 3100 details = mTelephonyManager.getNetworkOperatorName(); 3101 icon = R.drawable.stat_notify_rssi_in_range; 3102 break; 3103 default: 3104 title = r.getString(R.string.network_available_sign_in, 0); 3105 details = r.getString(R.string.network_available_sign_in_detailed, 3106 extraInfo); 3107 icon = R.drawable.stat_notify_rssi_in_range; 3108 break; 3109 } 3110 3111 notification.when = 0; 3112 notification.icon = icon; 3113 notification.flags = Notification.FLAG_AUTO_CANCEL; 3114 notification.tickerText = title; 3115 notification.color = mContext.getResources().getColor( 3116 com.android.internal.R.color.system_notification_accent_color); 3117 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3118 notification.contentIntent = intent; 3119 3120 try { 3121 notificationManager.notify(NOTIFICATION_ID, id, notification); 3122 } catch (NullPointerException npe) { 3123 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 3124 npe.printStackTrace(); 3125 } 3126 } else { 3127 try { 3128 notificationManager.cancel(NOTIFICATION_ID, id); 3129 } catch (NullPointerException npe) { 3130 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 3131 npe.printStackTrace(); 3132 } 3133 } 3134 mIsNotificationVisible = visible; 3135 } 3136 3137 /** Location to an updatable file listing carrier provisioning urls. 3138 * An example: 3139 * 3140 * <?xml version="1.0" encoding="utf-8"?> 3141 * <provisioningUrls> 3142 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3143 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3144 * </provisioningUrls> 3145 */ 3146 private static final String PROVISIONING_URL_PATH = 3147 "/data/misc/radio/provisioning_urls.xml"; 3148 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3149 3150 /** XML tag for root element. */ 3151 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3152 /** XML tag for individual url */ 3153 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3154 /** XML tag for redirected url */ 3155 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3156 /** XML attribute for mcc */ 3157 private static final String ATTR_MCC = "mcc"; 3158 /** XML attribute for mnc */ 3159 private static final String ATTR_MNC = "mnc"; 3160 3161 private static final int REDIRECTED_PROVISIONING = 1; 3162 private static final int PROVISIONING = 2; 3163 3164 private String getProvisioningUrlBaseFromFile(int type) { 3165 FileReader fileReader = null; 3166 XmlPullParser parser = null; 3167 Configuration config = mContext.getResources().getConfiguration(); 3168 String tagType; 3169 3170 switch (type) { 3171 case PROVISIONING: 3172 tagType = TAG_PROVISIONING_URL; 3173 break; 3174 case REDIRECTED_PROVISIONING: 3175 tagType = TAG_REDIRECTED_URL; 3176 break; 3177 default: 3178 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3179 type); 3180 } 3181 3182 try { 3183 fileReader = new FileReader(mProvisioningUrlFile); 3184 parser = Xml.newPullParser(); 3185 parser.setInput(fileReader); 3186 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3187 3188 while (true) { 3189 XmlUtils.nextElement(parser); 3190 3191 String element = parser.getName(); 3192 if (element == null) break; 3193 3194 if (element.equals(tagType)) { 3195 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3196 try { 3197 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3198 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3199 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3200 parser.next(); 3201 if (parser.getEventType() == XmlPullParser.TEXT) { 3202 return parser.getText(); 3203 } 3204 } 3205 } 3206 } catch (NumberFormatException e) { 3207 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3208 } 3209 } 3210 } 3211 return null; 3212 } catch (FileNotFoundException e) { 3213 loge("Carrier Provisioning Urls file not found"); 3214 } catch (XmlPullParserException e) { 3215 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3216 } catch (IOException e) { 3217 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3218 } finally { 3219 if (fileReader != null) { 3220 try { 3221 fileReader.close(); 3222 } catch (IOException e) {} 3223 } 3224 } 3225 return null; 3226 } 3227 3228 @Override 3229 public String getMobileRedirectedProvisioningUrl() { 3230 enforceConnectivityInternalPermission(); 3231 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3232 if (TextUtils.isEmpty(url)) { 3233 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3234 } 3235 return url; 3236 } 3237 3238 @Override 3239 public String getMobileProvisioningUrl() { 3240 enforceConnectivityInternalPermission(); 3241 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3242 if (TextUtils.isEmpty(url)) { 3243 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3244 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3245 } else { 3246 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3247 } 3248 // populate the iccid, imei and phone number in the provisioning url. 3249 if (!TextUtils.isEmpty(url)) { 3250 String phoneNumber = mTelephonyManager.getLine1Number(); 3251 if (TextUtils.isEmpty(phoneNumber)) { 3252 phoneNumber = "0000000000"; 3253 } 3254 url = String.format(url, 3255 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3256 mTelephonyManager.getDeviceId() /* IMEI */, 3257 phoneNumber /* Phone numer */); 3258 } 3259 3260 return url; 3261 } 3262 3263 @Override 3264 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3265 String action) { 3266 enforceConnectivityInternalPermission(); 3267 final long ident = Binder.clearCallingIdentity(); 3268 try { 3269 setProvNotificationVisible(visible, networkType, action); 3270 } finally { 3271 Binder.restoreCallingIdentity(ident); 3272 } 3273 } 3274 3275 @Override 3276 public void setAirplaneMode(boolean enable) { 3277 enforceConnectivityInternalPermission(); 3278 final long ident = Binder.clearCallingIdentity(); 3279 try { 3280 final ContentResolver cr = mContext.getContentResolver(); 3281 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3282 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3283 intent.putExtra("state", enable); 3284 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3285 } finally { 3286 Binder.restoreCallingIdentity(ident); 3287 } 3288 } 3289 3290 private void onUserStart(int userId) { 3291 synchronized(mVpns) { 3292 Vpn userVpn = mVpns.get(userId); 3293 if (userVpn != null) { 3294 loge("Starting user already has a VPN"); 3295 return; 3296 } 3297 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, this, userId); 3298 mVpns.put(userId, userVpn); 3299 } 3300 } 3301 3302 private void onUserStop(int userId) { 3303 synchronized(mVpns) { 3304 Vpn userVpn = mVpns.get(userId); 3305 if (userVpn == null) { 3306 loge("Stopping user has no VPN"); 3307 return; 3308 } 3309 mVpns.delete(userId); 3310 } 3311 } 3312 3313 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3314 @Override 3315 public void onReceive(Context context, Intent intent) { 3316 final String action = intent.getAction(); 3317 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3318 if (userId == UserHandle.USER_NULL) return; 3319 3320 if (Intent.ACTION_USER_STARTING.equals(action)) { 3321 onUserStart(userId); 3322 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3323 onUserStop(userId); 3324 } 3325 } 3326 }; 3327 3328 /* Infrastructure for network sampling */ 3329 3330 private void handleNetworkSamplingTimeout() { 3331 3332 if (SAMPLE_DBG) log("Sampling interval elapsed, updating statistics .."); 3333 3334 // initialize list of interfaces .. 3335 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 3336 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 3337 for (NetworkStateTracker tracker : mNetTrackers) { 3338 if (tracker != null) { 3339 String ifaceName = tracker.getNetworkInterfaceName(); 3340 if (ifaceName != null) { 3341 mapIfaceToSample.put(ifaceName, null); 3342 } 3343 } 3344 } 3345 3346 // Read samples for all interfaces 3347 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 3348 3349 // process samples for all networks 3350 for (NetworkStateTracker tracker : mNetTrackers) { 3351 if (tracker != null) { 3352 String ifaceName = tracker.getNetworkInterfaceName(); 3353 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 3354 if (ss != null) { 3355 // end the previous sampling cycle 3356 tracker.stopSampling(ss); 3357 // start a new sampling cycle .. 3358 tracker.startSampling(ss); 3359 } 3360 } 3361 } 3362 3363 if (SAMPLE_DBG) log("Done."); 3364 3365 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 3366 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 3367 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 3368 3369 if (SAMPLE_DBG) { 3370 log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 3371 } 3372 3373 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 3374 } 3375 3376 /** 3377 * Sets a network sampling alarm. 3378 */ 3379 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 3380 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 3381 int alarmType; 3382 if (Resources.getSystem().getBoolean( 3383 R.bool.config_networkSamplingWakesDevice)) { 3384 alarmType = AlarmManager.ELAPSED_REALTIME_WAKEUP; 3385 } else { 3386 alarmType = AlarmManager.ELAPSED_REALTIME; 3387 } 3388 mAlarmManager.set(alarmType, wakeupTime, intent); 3389 } 3390 3391 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3392 new HashMap<Messenger, NetworkFactoryInfo>(); 3393 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3394 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3395 3396 private static class NetworkFactoryInfo { 3397 public final String name; 3398 public final Messenger messenger; 3399 public final AsyncChannel asyncChannel; 3400 3401 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3402 this.name = name; 3403 this.messenger = messenger; 3404 this.asyncChannel = asyncChannel; 3405 } 3406 } 3407 3408 /** 3409 * Tracks info about the requester. 3410 * Also used to notice when the calling process dies so we can self-expire 3411 */ 3412 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3413 static final boolean REQUEST = true; 3414 static final boolean LISTEN = false; 3415 3416 final NetworkRequest request; 3417 final PendingIntent mPendingIntent; 3418 boolean mPendingIntentSent; 3419 private final IBinder mBinder; 3420 final int mPid; 3421 final int mUid; 3422 final Messenger messenger; 3423 final boolean isRequest; 3424 3425 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3426 request = r; 3427 mPendingIntent = pi; 3428 messenger = null; 3429 mBinder = null; 3430 mPid = getCallingPid(); 3431 mUid = getCallingUid(); 3432 this.isRequest = isRequest; 3433 } 3434 3435 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3436 super(); 3437 messenger = m; 3438 request = r; 3439 mBinder = binder; 3440 mPid = getCallingPid(); 3441 mUid = getCallingUid(); 3442 this.isRequest = isRequest; 3443 mPendingIntent = null; 3444 3445 try { 3446 mBinder.linkToDeath(this, 0); 3447 } catch (RemoteException e) { 3448 binderDied(); 3449 } 3450 } 3451 3452 void unlinkDeathRecipient() { 3453 if (mBinder != null) { 3454 mBinder.unlinkToDeath(this, 0); 3455 } 3456 } 3457 3458 public void binderDied() { 3459 log("ConnectivityService NetworkRequestInfo binderDied(" + 3460 request + ", " + mBinder + ")"); 3461 releaseNetworkRequest(request); 3462 } 3463 3464 public String toString() { 3465 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3466 mPid + " for " + request + 3467 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3468 } 3469 } 3470 3471 @Override 3472 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3473 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3474 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3475 enforceNetworkRequestPermissions(networkCapabilities); 3476 enforceMeteredApnPolicy(networkCapabilities); 3477 3478 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3479 throw new IllegalArgumentException("Bad timeout specified"); 3480 } 3481 3482 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3483 nextNetworkRequestId()); 3484 if (DBG) log("requestNetwork for " + networkRequest); 3485 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3486 NetworkRequestInfo.REQUEST); 3487 3488 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3489 if (timeoutMs > 0) { 3490 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3491 nri), timeoutMs); 3492 } 3493 return networkRequest; 3494 } 3495 3496 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3497 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 3498 == false) { 3499 enforceConnectivityInternalPermission(); 3500 } else { 3501 enforceChangePermission(); 3502 } 3503 } 3504 3505 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3506 // if UID is restricted, don't allow them to bring up metered APNs 3507 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED) 3508 == false) { 3509 final int uidRules; 3510 final int uid = Binder.getCallingUid(); 3511 synchronized(mRulesLock) { 3512 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3513 } 3514 if ((uidRules & RULE_REJECT_METERED) != 0) { 3515 // we could silently fail or we can filter the available nets to only give 3516 // them those they have access to. Chose the more useful 3517 networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED); 3518 } 3519 } 3520 } 3521 3522 @Override 3523 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3524 PendingIntent operation) { 3525 checkNotNull(operation, "PendingIntent cannot be null."); 3526 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3527 enforceNetworkRequestPermissions(networkCapabilities); 3528 enforceMeteredApnPolicy(networkCapabilities); 3529 3530 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3531 nextNetworkRequestId()); 3532 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3533 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3534 NetworkRequestInfo.REQUEST); 3535 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3536 nri)); 3537 return networkRequest; 3538 } 3539 3540 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3541 mHandler.sendMessageDelayed( 3542 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3543 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3544 } 3545 3546 @Override 3547 public void releasePendingNetworkRequest(PendingIntent operation) { 3548 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3549 getCallingUid(), 0, operation)); 3550 } 3551 3552 @Override 3553 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3554 Messenger messenger, IBinder binder) { 3555 enforceAccessPermission(); 3556 3557 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3558 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3559 if (DBG) log("listenForNetwork for " + networkRequest); 3560 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3561 NetworkRequestInfo.LISTEN); 3562 3563 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3564 return networkRequest; 3565 } 3566 3567 @Override 3568 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3569 PendingIntent operation) { 3570 } 3571 3572 @Override 3573 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3574 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3575 0, networkRequest)); 3576 } 3577 3578 @Override 3579 public void registerNetworkFactory(Messenger messenger, String name) { 3580 enforceConnectivityInternalPermission(); 3581 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3582 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3583 } 3584 3585 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3586 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3587 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3588 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3589 } 3590 3591 @Override 3592 public void unregisterNetworkFactory(Messenger messenger) { 3593 enforceConnectivityInternalPermission(); 3594 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3595 } 3596 3597 private void handleUnregisterNetworkFactory(Messenger messenger) { 3598 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3599 if (nfi == null) { 3600 loge("Failed to find Messenger in unregisterNetworkFactory"); 3601 return; 3602 } 3603 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3604 } 3605 3606 /** 3607 * NetworkAgentInfo supporting a request by requestId. 3608 * These have already been vetted (their Capabilities satisfy the request) 3609 * and the are the highest scored network available. 3610 * the are keyed off the Requests requestId. 3611 */ 3612 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3613 new SparseArray<NetworkAgentInfo>(); 3614 3615 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3616 new SparseArray<NetworkAgentInfo>(); 3617 3618 // NetworkAgentInfo keyed off its connecting messenger 3619 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3620 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3621 new HashMap<Messenger, NetworkAgentInfo>(); 3622 3623 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3624 private final NetworkRequest mDefaultRequest; 3625 3626 private NetworkAgentInfo getDefaultNetwork() { 3627 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3628 } 3629 3630 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3631 return nai == getDefaultNetwork(); 3632 } 3633 3634 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3635 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3636 int currentScore, NetworkMisc networkMisc) { 3637 enforceConnectivityInternalPermission(); 3638 3639 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3640 // satisfies mDefaultRequest. 3641 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3642 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 3643 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler, 3644 new NetworkMisc(networkMisc), mDefaultRequest); 3645 synchronized (this) { 3646 nai.networkMonitor.systemReady = mSystemReady; 3647 } 3648 if (DBG) log("registerNetworkAgent " + nai); 3649 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3650 } 3651 3652 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3653 if (VDBG) log("Got NetworkAgent Messenger"); 3654 mNetworkAgentInfos.put(na.messenger, na); 3655 assignNextNetId(na); 3656 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3657 NetworkInfo networkInfo = na.networkInfo; 3658 na.networkInfo = null; 3659 updateNetworkInfo(na, networkInfo); 3660 } 3661 3662 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3663 LinkProperties newLp = networkAgent.linkProperties; 3664 int netId = networkAgent.network.netId; 3665 3666 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3667 // we do anything else, make sure its LinkProperties are accurate. 3668 if (networkAgent.clatd != null) { 3669 networkAgent.clatd.fixupLinkProperties(oldLp); 3670 } 3671 3672 updateInterfaces(newLp, oldLp, netId); 3673 updateMtu(newLp, oldLp); 3674 // TODO - figure out what to do for clat 3675// for (LinkProperties lp : newLp.getStackedLinks()) { 3676// updateMtu(lp, null); 3677// } 3678 updateTcpBufferSizes(networkAgent); 3679 3680 // TODO: deprecate and remove mDefaultDns when we can do so safely. 3681 // For now, use it only when the network has Internet access. http://b/18327075 3682 final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3683 NetworkCapabilities.NET_CAPABILITY_INTERNET); 3684 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3685 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3686 3687 updateClat(newLp, oldLp, networkAgent); 3688 if (isDefaultNetwork(networkAgent)) handleApplyDefaultProxy(newLp.getHttpProxy()); 3689 // TODO - move this check to cover the whole function 3690 if (!Objects.equals(newLp, oldLp)) { 3691 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3692 } 3693 } 3694 3695 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3696 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3697 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3698 3699 if (!wasRunningClat && shouldRunClat) { 3700 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3701 nai.clatd.start(); 3702 } else if (wasRunningClat && !shouldRunClat) { 3703 nai.clatd.stop(); 3704 } 3705 } 3706 3707 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3708 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3709 if (oldLp != null) { 3710 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3711 } else if (newLp != null) { 3712 interfaceDiff.added = newLp.getAllInterfaceNames(); 3713 } 3714 for (String iface : interfaceDiff.added) { 3715 try { 3716 if (DBG) log("Adding iface " + iface + " to network " + netId); 3717 mNetd.addInterfaceToNetwork(iface, netId); 3718 } catch (Exception e) { 3719 loge("Exception adding interface: " + e); 3720 } 3721 } 3722 for (String iface : interfaceDiff.removed) { 3723 try { 3724 if (DBG) log("Removing iface " + iface + " from network " + netId); 3725 mNetd.removeInterfaceFromNetwork(iface, netId); 3726 } catch (Exception e) { 3727 loge("Exception removing interface: " + e); 3728 } 3729 } 3730 } 3731 3732 /** 3733 * Have netd update routes from oldLp to newLp. 3734 * @return true if routes changed between oldLp and newLp 3735 */ 3736 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3737 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3738 if (oldLp != null) { 3739 routeDiff = oldLp.compareAllRoutes(newLp); 3740 } else if (newLp != null) { 3741 routeDiff.added = newLp.getAllRoutes(); 3742 } 3743 3744 // add routes before removing old in case it helps with continuous connectivity 3745 3746 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3747 for (RouteInfo route : routeDiff.added) { 3748 if (route.hasGateway()) continue; 3749 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3750 try { 3751 mNetd.addRoute(netId, route); 3752 } catch (Exception e) { 3753 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3754 loge("Exception in addRoute for non-gateway: " + e); 3755 } 3756 } 3757 } 3758 for (RouteInfo route : routeDiff.added) { 3759 if (route.hasGateway() == false) continue; 3760 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3761 try { 3762 mNetd.addRoute(netId, route); 3763 } catch (Exception e) { 3764 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3765 loge("Exception in addRoute for gateway: " + e); 3766 } 3767 } 3768 } 3769 3770 for (RouteInfo route : routeDiff.removed) { 3771 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3772 try { 3773 mNetd.removeRoute(netId, route); 3774 } catch (Exception e) { 3775 loge("Exception in removeRoute: " + e); 3776 } 3777 } 3778 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3779 } 3780 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 3781 boolean flush, boolean useDefaultDns) { 3782 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 3783 Collection<InetAddress> dnses = newLp.getDnsServers(); 3784 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 3785 dnses = new ArrayList(); 3786 dnses.add(mDefaultDns); 3787 if (DBG) { 3788 loge("no dns provided for netId " + netId + ", so using defaults"); 3789 } 3790 } 3791 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 3792 try { 3793 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 3794 newLp.getDomains()); 3795 } catch (Exception e) { 3796 loge("Exception in setDnsServersForNetwork: " + e); 3797 } 3798 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 3799 if (defaultNai != null && defaultNai.network.netId == netId) { 3800 setDefaultDnsSystemProperties(dnses); 3801 } 3802 flushVmDnsCache(); 3803 } else if (flush) { 3804 try { 3805 mNetd.flushNetworkDnsCache(netId); 3806 } catch (Exception e) { 3807 loge("Exception in flushNetworkDnsCache: " + e); 3808 } 3809 flushVmDnsCache(); 3810 } 3811 } 3812 3813 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 3814 int last = 0; 3815 for (InetAddress dns : dnses) { 3816 ++last; 3817 String key = "net.dns" + last; 3818 String value = dns.getHostAddress(); 3819 SystemProperties.set(key, value); 3820 } 3821 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 3822 String key = "net.dns" + i; 3823 SystemProperties.set(key, ""); 3824 } 3825 mNumDnsEntries = last; 3826 } 3827 3828 3829 private void updateCapabilities(NetworkAgentInfo networkAgent, 3830 NetworkCapabilities networkCapabilities) { 3831 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 3832 synchronized (networkAgent) { 3833 networkAgent.networkCapabilities = networkCapabilities; 3834 } 3835 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 3836 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 3837 } 3838 } 3839 3840 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 3841 for (int i = 0; i < nai.networkRequests.size(); i++) { 3842 NetworkRequest nr = nai.networkRequests.valueAt(i); 3843 // Don't send listening requests to factories. b/17393458 3844 if (!isRequest(nr)) continue; 3845 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 3846 } 3847 } 3848 3849 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 3850 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 3851 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3852 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 3853 networkRequest); 3854 } 3855 } 3856 3857 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 3858 int notificationType) { 3859 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 3860 Intent intent = new Intent(); 3861 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 3862 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 3863 nri.mPendingIntentSent = true; 3864 sendIntent(nri.mPendingIntent, intent); 3865 } 3866 // else not handled 3867 } 3868 3869 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 3870 mPendingIntentWakeLock.acquire(); 3871 try { 3872 if (DBG) log("Sending " + pendingIntent); 3873 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 3874 } catch (PendingIntent.CanceledException e) { 3875 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 3876 mPendingIntentWakeLock.release(); 3877 releasePendingNetworkRequest(pendingIntent); 3878 } 3879 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 3880 } 3881 3882 @Override 3883 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 3884 String resultData, Bundle resultExtras) { 3885 if (DBG) log("Finished sending " + pendingIntent); 3886 mPendingIntentWakeLock.release(); 3887 // Release with a delay so the receiving client has an opportunity to put in its 3888 // own request. 3889 releasePendingNetworkRequestWithDelay(pendingIntent); 3890 } 3891 3892 private void callCallbackForRequest(NetworkRequestInfo nri, 3893 NetworkAgentInfo networkAgent, int notificationType) { 3894 if (nri.messenger == null) return; // Default request has no msgr 3895 Bundle bundle = new Bundle(); 3896 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 3897 new NetworkRequest(nri.request)); 3898 Message msg = Message.obtain(); 3899 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 3900 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 3901 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 3902 } 3903 switch (notificationType) { 3904 case ConnectivityManager.CALLBACK_LOSING: { 3905 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 3906 break; 3907 } 3908 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 3909 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 3910 new NetworkCapabilities(networkAgent.networkCapabilities)); 3911 break; 3912 } 3913 case ConnectivityManager.CALLBACK_IP_CHANGED: { 3914 bundle.putParcelable(LinkProperties.class.getSimpleName(), 3915 new LinkProperties(networkAgent.linkProperties)); 3916 break; 3917 } 3918 } 3919 msg.what = notificationType; 3920 msg.setData(bundle); 3921 try { 3922 if (VDBG) { 3923 log("sending notification " + notifyTypeToName(notificationType) + 3924 " for " + nri.request); 3925 } 3926 nri.messenger.send(msg); 3927 } catch (RemoteException e) { 3928 // may occur naturally in the race of binder death. 3929 loge("RemoteException caught trying to send a callback msg for " + nri.request); 3930 } 3931 } 3932 3933 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 3934 for (int i = 0; i < nai.networkRequests.size(); i++) { 3935 NetworkRequest nr = nai.networkRequests.valueAt(i); 3936 // Ignore listening requests. 3937 if (!isRequest(nr)) continue; 3938 loge("Dead network still had at least " + nr); 3939 break; 3940 } 3941 nai.asyncChannel.disconnect(); 3942 } 3943 3944 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 3945 if (oldNetwork == null) { 3946 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 3947 return; 3948 } 3949 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 3950 teardownUnneededNetwork(oldNetwork); 3951 } 3952 3953 private void makeDefault(NetworkAgentInfo newNetwork) { 3954 if (DBG) log("Switching to new default network: " + newNetwork); 3955 setupDataActivityTracking(newNetwork); 3956 try { 3957 mNetd.setDefaultNetId(newNetwork.network.netId); 3958 } catch (Exception e) { 3959 loge("Exception setting default network :" + e); 3960 } 3961 notifyLockdownVpn(newNetwork); 3962 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 3963 updateTcpBufferSizes(newNetwork); 3964 } 3965 3966 // Handles a network appearing or improving its score. 3967 // 3968 // - Evaluates all current NetworkRequests that can be 3969 // satisfied by newNetwork, and reassigns to newNetwork 3970 // any such requests for which newNetwork is the best. 3971 // 3972 // - Lingers any validated Networks that as a result are no longer 3973 // needed. A network is needed if it is the best network for 3974 // one or more NetworkRequests, or if it is a VPN. 3975 // 3976 // - Tears down newNetwork if it just became validated 3977 // (i.e. nascent==JUST_VALIDATED) but turns out to be unneeded. 3978 // 3979 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 3980 // networks that have no chance (i.e. even if validated) 3981 // of becoming the highest scoring network. 3982 // 3983 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 3984 // it does not remove NetworkRequests that other Networks could better satisfy. 3985 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 3986 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 3987 // as it performs better by a factor of the number of Networks. 3988 // 3989 // @param newNetwork is the network to be matched against NetworkRequests. 3990 // @param nascent indicates if newNetwork just became validated, in which case it should be 3991 // torn down if unneeded. 3992 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 3993 // performed to tear down unvalidated networks that have no chance (i.e. even if 3994 // validated) of becoming the highest scoring network. 3995 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, NascentState nascent, 3996 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 3997 if (!newNetwork.created) return; 3998 if (nascent == NascentState.JUST_VALIDATED && !newNetwork.validated) { 3999 loge("ERROR: nascent network not validated."); 4000 } 4001 boolean keep = newNetwork.isVPN(); 4002 boolean isNewDefault = false; 4003 if (DBG) log("rematching " + newNetwork.name()); 4004 // Find and migrate to this Network any NetworkRequests for 4005 // which this network is now the best. 4006 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4007 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4008 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4009 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4010 if (newNetwork == currentNetwork) { 4011 if (DBG) { 4012 log("Network " + newNetwork.name() + " was already satisfying" + 4013 " request " + nri.request.requestId + ". No change."); 4014 } 4015 keep = true; 4016 continue; 4017 } 4018 4019 // check if it satisfies the NetworkCapabilities 4020 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4021 if (newNetwork.satisfies(nri.request)) { 4022 if (!nri.isRequest) { 4023 // This is not a request, it's a callback listener. 4024 // Add it to newNetwork regardless of score. 4025 newNetwork.addRequest(nri.request); 4026 continue; 4027 } 4028 4029 // next check if it's better than any current network we're using for 4030 // this request 4031 if (VDBG) { 4032 log("currentScore = " + 4033 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4034 ", newScore = " + newNetwork.getCurrentScore()); 4035 } 4036 if (currentNetwork == null || 4037 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4038 if (currentNetwork != null) { 4039 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4040 currentNetwork.networkRequests.remove(nri.request.requestId); 4041 currentNetwork.networkLingered.add(nri.request); 4042 affectedNetworks.add(currentNetwork); 4043 } else { 4044 if (DBG) log(" accepting network in place of null"); 4045 } 4046 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4047 newNetwork.addRequest(nri.request); 4048 if (nri.isRequest && nri.request.legacyType != TYPE_NONE) { 4049 mLegacyTypeTracker.add(nri.request.legacyType, newNetwork); 4050 } 4051 keep = true; 4052 // Tell NetworkFactories about the new score, so they can stop 4053 // trying to connect if they know they cannot match it. 4054 // TODO - this could get expensive if we have alot of requests for this 4055 // network. Think about if there is a way to reduce this. Push 4056 // netid->request mapping to each factory? 4057 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4058 if (mDefaultRequest.requestId == nri.request.requestId) { 4059 isNewDefault = true; 4060 // TODO: Remove following line. It's redundant with makeDefault call. 4061 if (newNetwork.linkProperties != null) { 4062 updateTcpBufferSizes(newNetwork); 4063 setDefaultDnsSystemProperties( 4064 newNetwork.linkProperties.getDnsServers()); 4065 } else { 4066 setDefaultDnsSystemProperties(new ArrayList<InetAddress>()); 4067 } 4068 // Maintain the illusion: since the legacy API only 4069 // understands one network at a time, we must pretend 4070 // that the current default network disconnected before 4071 // the new one connected. 4072 if (currentNetwork != null) { 4073 mLegacyTypeTracker.remove(currentNetwork.networkInfo.getType(), 4074 currentNetwork); 4075 } 4076 mDefaultInetConditionPublished = newNetwork.validated ? 100 : 0; 4077 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4078 notifyLockdownVpn(newNetwork); 4079 } 4080 } 4081 } 4082 } 4083 // Linger any networks that are no longer needed. 4084 for (NetworkAgentInfo nai : affectedNetworks) { 4085 boolean teardown = !nai.isVPN() && nai.validated; 4086 for (int i = 0; i < nai.networkRequests.size() && teardown; i++) { 4087 NetworkRequest nr = nai.networkRequests.valueAt(i); 4088 try { 4089 if (isRequest(nr)) { 4090 teardown = false; 4091 } 4092 } catch (Exception e) { 4093 loge("Request " + nr + " not found in mNetworkRequests."); 4094 loge(" it came from request list of " + nai.name()); 4095 } 4096 } 4097 if (teardown) { 4098 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4099 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4100 } else { 4101 unlinger(nai); 4102 } 4103 } 4104 if (keep) { 4105 if (isNewDefault) { 4106 // Notify system services that this network is up. 4107 makeDefault(newNetwork); 4108 synchronized (ConnectivityService.this) { 4109 // have a new default network, release the transition wakelock in 4110 // a second if it's held. The second pause is to allow apps 4111 // to reconnect over the new network 4112 if (mNetTransitionWakeLock.isHeld()) { 4113 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4114 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4115 mNetTransitionWakeLockSerialNumber, 0), 4116 1000); 4117 } 4118 } 4119 } 4120 4121 // Notify battery stats service about this network, both the normal 4122 // interface and any stacked links. 4123 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4124 try { 4125 final IBatteryStats bs = BatteryStatsService.getService(); 4126 final int type = newNetwork.networkInfo.getType(); 4127 4128 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4129 bs.noteNetworkInterfaceType(baseIface, type); 4130 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4131 final String stackedIface = stacked.getInterfaceName(); 4132 bs.noteNetworkInterfaceType(stackedIface, type); 4133 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4134 } 4135 } catch (RemoteException ignored) { 4136 } 4137 4138 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4139 4140 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4141 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4142 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4143 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4144 if (newNetwork.isVPN()) { 4145 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4146 } 4147 } else if (nascent == NascentState.JUST_VALIDATED) { 4148 // Only tear down newly validated networks here. Leave unvalidated to either become 4149 // validated (and get evaluated against peers, one losing here), or get reaped (see 4150 // reapUnvalidatedNetworks) if they have no chance of becoming the highest scoring 4151 // network. Networks that have been up for a while and are validated should be torn 4152 // down via the lingering process so communication on that network is given time to 4153 // wrap up. 4154 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4155 teardownUnneededNetwork(newNetwork); 4156 } 4157 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4158 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4159 if (!nai.created || nai.validated || nai.isVPN()) continue; 4160 boolean reap = true; 4161 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4162 // If this Network is already the highest scoring Network for a request, or if 4163 // there is hope for it to become one if it validated, then don't reap it. 4164 if (nri.isRequest && nai.satisfies(nri.request) && 4165 (nai.networkRequests.get(nri.request.requestId) != null || 4166 // Note that this catches two important cases: 4167 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 4168 // is currently satisfying the request. This is desirable when 4169 // cellular ends up validating but WiFi does not. 4170 // 2. Unvalidated WiFi will not be reaped when validated cellular 4171 // is currently satsifying the request. This is desirable when 4172 // WiFi ends up validating and out scoring cellular. 4173 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 4174 nai.getCurrentScoreAsValidated())) { 4175 reap = false; 4176 break; 4177 } 4178 } 4179 if (reap) { 4180 if (DBG) log("Reaping " + nai.name()); 4181 teardownUnneededNetwork(nai); 4182 } 4183 } 4184 } 4185 } 4186 4187 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4188 // being disconnected. 4189 // If only one Network's score or capabilities have been modified since the last time 4190 // this function was called, pass this Network in via the "changed" arugment, otherwise 4191 // pass null. 4192 // If only one Network has been changed but its NetworkCapabilities have not changed, 4193 // pass in the Network's score (from getCurrentScore()) prior to the change via 4194 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4195 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4196 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4197 // to avoid the slowness. It is not simply enough to process just "changed", for 4198 // example in the case where "changed"'s score decreases and another network should begin 4199 // satifying a NetworkRequest that "changed" currently satisfies. 4200 4201 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4202 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4203 // rematchNetworkAndRequests() handles. 4204 if (changed != null && oldScore < changed.getCurrentScore()) { 4205 rematchNetworkAndRequests(changed, NascentState.NOT_JUST_VALIDATED, 4206 ReapUnvalidatedNetworks.REAP); 4207 } else { 4208 for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) { 4209 rematchNetworkAndRequests((NetworkAgentInfo)i.next(), 4210 NascentState.NOT_JUST_VALIDATED, 4211 // Only reap the last time through the loop. Reaping before all rematching 4212 // is complete could incorrectly teardown a network that hasn't yet been 4213 // rematched. 4214 i.hasNext() ? ReapUnvalidatedNetworks.DONT_REAP 4215 : ReapUnvalidatedNetworks.REAP); 4216 } 4217 } 4218 } 4219 4220 private void updateInetCondition(NetworkAgentInfo nai, boolean valid) { 4221 // Don't bother updating until we've graduated to validated at least once. 4222 if (!nai.validated) return; 4223 // For now only update icons for default connection. 4224 // TODO: Update WiFi and cellular icons separately. b/17237507 4225 if (!isDefaultNetwork(nai)) return; 4226 4227 int newInetCondition = valid ? 100 : 0; 4228 // Don't repeat publish. 4229 if (newInetCondition == mDefaultInetConditionPublished) return; 4230 4231 mDefaultInetConditionPublished = newInetCondition; 4232 sendInetConditionBroadcast(nai.networkInfo); 4233 } 4234 4235 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4236 if (mLockdownTracker != null) { 4237 if (nai != null && nai.isVPN()) { 4238 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4239 } else { 4240 mLockdownTracker.onNetworkInfoChanged(); 4241 } 4242 } 4243 } 4244 4245 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4246 NetworkInfo.State state = newInfo.getState(); 4247 NetworkInfo oldInfo = null; 4248 synchronized (networkAgent) { 4249 oldInfo = networkAgent.networkInfo; 4250 networkAgent.networkInfo = newInfo; 4251 } 4252 notifyLockdownVpn(networkAgent); 4253 4254 if (oldInfo != null && oldInfo.getState() == state) { 4255 if (VDBG) log("ignoring duplicate network state non-change"); 4256 return; 4257 } 4258 if (DBG) { 4259 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4260 (oldInfo == null ? "null" : oldInfo.getState()) + 4261 " to " + state); 4262 } 4263 4264 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4265 try { 4266 // This should never fail. Specifying an already in use NetID will cause failure. 4267 if (networkAgent.isVPN()) { 4268 mNetd.createVirtualNetwork(networkAgent.network.netId, 4269 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4270 (networkAgent.networkMisc == null || 4271 !networkAgent.networkMisc.allowBypass)); 4272 } else { 4273 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4274 } 4275 } catch (Exception e) { 4276 loge("Error creating network " + networkAgent.network.netId + ": " 4277 + e.getMessage()); 4278 return; 4279 } 4280 networkAgent.created = true; 4281 updateLinkProperties(networkAgent, null); 4282 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4283 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4284 if (networkAgent.isVPN()) { 4285 // Temporarily disable the default proxy (not global). 4286 synchronized (mProxyLock) { 4287 if (!mDefaultProxyDisabled) { 4288 mDefaultProxyDisabled = true; 4289 if (mGlobalProxy == null && mDefaultProxy != null) { 4290 sendProxyBroadcast(null); 4291 } 4292 } 4293 } 4294 // TODO: support proxy per network. 4295 } 4296 // Consider network even though it is not yet validated. 4297 rematchNetworkAndRequests(networkAgent, NascentState.NOT_JUST_VALIDATED, 4298 ReapUnvalidatedNetworks.REAP); 4299 } else if (state == NetworkInfo.State.DISCONNECTED || 4300 state == NetworkInfo.State.SUSPENDED) { 4301 networkAgent.asyncChannel.disconnect(); 4302 if (networkAgent.isVPN()) { 4303 synchronized (mProxyLock) { 4304 if (mDefaultProxyDisabled) { 4305 mDefaultProxyDisabled = false; 4306 if (mGlobalProxy == null && mDefaultProxy != null) { 4307 sendProxyBroadcast(mDefaultProxy); 4308 } 4309 } 4310 } 4311 } 4312 } 4313 } 4314 4315 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4316 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4317 if (score < 0) { 4318 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4319 "). Bumping score to min of 0"); 4320 score = 0; 4321 } 4322 4323 final int oldScore = nai.getCurrentScore(); 4324 nai.setCurrentScore(score); 4325 4326 rematchAllNetworksAndRequests(nai, oldScore); 4327 4328 sendUpdatedScoreToFactories(nai); 4329 } 4330 4331 // notify only this one new request of the current state 4332 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4333 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4334 // TODO - read state from monitor to decide what to send. 4335// if (nai.networkMonitor.isLingering()) { 4336// notifyType = NetworkCallbacks.LOSING; 4337// } else if (nai.networkMonitor.isEvaluating()) { 4338// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4339// } 4340 if (nri.mPendingIntent == null) { 4341 callCallbackForRequest(nri, nai, notifyType); 4342 } else { 4343 sendPendingIntentForRequest(nri, nai, notifyType); 4344 } 4345 } 4346 4347 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4348 // The NetworkInfo we actually send out has no bearing on the real 4349 // state of affairs. For example, if the default connection is mobile, 4350 // and a request for HIPRI has just gone away, we need to pretend that 4351 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4352 // the state to DISCONNECTED, even though the network is of type MOBILE 4353 // and is still connected. 4354 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4355 info.setType(type); 4356 if (connected) { 4357 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4358 sendConnectedBroadcast(info); 4359 } else { 4360 info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo()); 4361 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4362 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4363 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4364 if (info.isFailover()) { 4365 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4366 nai.networkInfo.setFailover(false); 4367 } 4368 if (info.getReason() != null) { 4369 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4370 } 4371 if (info.getExtraInfo() != null) { 4372 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4373 } 4374 NetworkAgentInfo newDefaultAgent = null; 4375 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4376 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4377 if (newDefaultAgent != null) { 4378 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4379 newDefaultAgent.networkInfo); 4380 } else { 4381 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4382 } 4383 } 4384 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4385 mDefaultInetConditionPublished); 4386 final Intent immediateIntent = new Intent(intent); 4387 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 4388 sendStickyBroadcast(immediateIntent); 4389 sendStickyBroadcast(intent); 4390 if (newDefaultAgent != null) { 4391 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4392 } 4393 } 4394 } 4395 4396 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4397 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4398 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4399 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4400 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4401 if (VDBG) log(" sending notification for " + nr); 4402 if (nri.mPendingIntent == null) { 4403 callCallbackForRequest(nri, networkAgent, notifyType); 4404 } else { 4405 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4406 } 4407 } 4408 } 4409 4410 private String notifyTypeToName(int notifyType) { 4411 switch (notifyType) { 4412 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4413 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4414 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4415 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4416 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4417 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4418 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4419 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4420 } 4421 return "UNKNOWN"; 4422 } 4423 4424 @Override 4425 public boolean addVpnAddress(String address, int prefixLength) { 4426 throwIfLockdownEnabled(); 4427 int user = UserHandle.getUserId(Binder.getCallingUid()); 4428 synchronized (mVpns) { 4429 return mVpns.get(user).addAddress(address, prefixLength); 4430 } 4431 } 4432 4433 @Override 4434 public boolean removeVpnAddress(String address, int prefixLength) { 4435 throwIfLockdownEnabled(); 4436 int user = UserHandle.getUserId(Binder.getCallingUid()); 4437 synchronized (mVpns) { 4438 return mVpns.get(user).removeAddress(address, prefixLength); 4439 } 4440 } 4441 4442 @Override 4443 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4444 throwIfLockdownEnabled(); 4445 int user = UserHandle.getUserId(Binder.getCallingUid()); 4446 synchronized (mVpns) { 4447 return mVpns.get(user).setUnderlyingNetworks(networks); 4448 } 4449 } 4450} 4451