ConnectivityService.java revision 812800cb92090db31f609b907c4458ba76cf7f42
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.RECEIVE_DATA_ACTIVITY_CHANGE; 20import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; 21import static android.net.ConnectivityManager.NETID_UNSET; 22import static android.net.ConnectivityManager.TYPE_NONE; 23import static android.net.ConnectivityManager.TYPE_VPN; 24import static android.net.ConnectivityManager.getNetworkTypeName; 25import static android.net.ConnectivityManager.isNetworkTypeValid; 26import static android.net.NetworkCapabilities.NET_CAPABILITY_CAPTIVE_PORTAL; 27import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET; 28import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED; 29import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED; 30import static android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED; 31import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 32import static android.net.NetworkPolicyManager.RULE_ALLOW_METERED; 33import static android.net.NetworkPolicyManager.MASK_METERED_NETWORKS; 34import static android.net.NetworkPolicyManager.MASK_ALL_NETWORKS; 35import static android.net.NetworkPolicyManager.RULE_NONE; 36import static android.net.NetworkPolicyManager.RULE_REJECT_ALL; 37import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 38import static android.net.NetworkPolicyManager.RULE_TEMPORARY_ALLOW_METERED; 39import static android.net.NetworkPolicyManager.uidRulesToString; 40 41import android.annotation.Nullable; 42import android.app.BroadcastOptions; 43import android.app.Notification; 44import android.app.NotificationManager; 45import android.app.PendingIntent; 46import android.content.BroadcastReceiver; 47import android.content.ContentResolver; 48import android.content.Context; 49import android.content.Intent; 50import android.content.IntentFilter; 51import android.content.pm.PackageManager; 52import android.content.res.Configuration; 53import android.content.res.Resources; 54import android.database.ContentObserver; 55import android.net.ConnectivityManager; 56import android.net.ConnectivityManager.PacketKeepalive; 57import android.net.IConnectivityManager; 58import android.net.INetworkManagementEventObserver; 59import android.net.INetworkPolicyListener; 60import android.net.INetworkPolicyManager; 61import android.net.INetworkStatsService; 62import android.net.LinkProperties; 63import android.net.LinkProperties.CompareResult; 64import android.net.Network; 65import android.net.NetworkAgent; 66import android.net.NetworkCapabilities; 67import android.net.NetworkConfig; 68import android.net.NetworkInfo; 69import android.net.NetworkInfo.DetailedState; 70import android.net.NetworkMisc; 71import android.net.NetworkQuotaInfo; 72import android.net.NetworkRequest; 73import android.net.NetworkState; 74import android.net.NetworkUtils; 75import android.net.Proxy; 76import android.net.ProxyInfo; 77import android.net.RouteInfo; 78import android.net.UidRange; 79import android.net.Uri; 80import android.net.metrics.DefaultNetworkEvent; 81import android.net.metrics.NetworkEvent; 82import android.os.Binder; 83import android.os.Build; 84import android.os.Bundle; 85import android.os.FileUtils; 86import android.os.Handler; 87import android.os.HandlerThread; 88import android.os.IBinder; 89import android.os.INetworkManagementService; 90import android.os.Looper; 91import android.os.Message; 92import android.os.Messenger; 93import android.os.ParcelFileDescriptor; 94import android.os.PowerManager; 95import android.os.Process; 96import android.os.RemoteException; 97import android.os.ResultReceiver; 98import android.os.SystemProperties; 99import android.os.UserHandle; 100import android.os.UserManager; 101import android.provider.Settings; 102import android.security.Credentials; 103import android.security.KeyStore; 104import android.telephony.TelephonyManager; 105import android.text.TextUtils; 106import android.util.ArraySet; 107import android.util.LocalLog; 108import android.util.LocalLog.ReadOnlyLocalLog; 109import android.util.Log; 110import android.util.Pair; 111import android.util.Slog; 112import android.util.SparseArray; 113import android.util.SparseBooleanArray; 114import android.util.SparseIntArray; 115import android.util.Xml; 116 117import com.android.internal.R; 118import com.android.internal.annotations.GuardedBy; 119import com.android.internal.annotations.VisibleForTesting; 120import com.android.internal.app.IBatteryStats; 121import com.android.internal.net.LegacyVpnInfo; 122import com.android.internal.net.NetworkStatsFactory; 123import com.android.internal.net.VpnConfig; 124import com.android.internal.net.VpnInfo; 125import com.android.internal.net.VpnProfile; 126import com.android.internal.util.AsyncChannel; 127import com.android.internal.util.IndentingPrintWriter; 128import com.android.internal.util.MessageUtils; 129import com.android.internal.util.XmlUtils; 130import com.android.server.am.BatteryStatsService; 131import com.android.server.connectivity.DataConnectionStats; 132import com.android.server.connectivity.KeepaliveTracker; 133import com.android.server.connectivity.Nat464Xlat; 134import com.android.server.connectivity.NetworkAgentInfo; 135import com.android.server.connectivity.NetworkDiagnostics; 136import com.android.server.connectivity.NetworkMonitor; 137import com.android.server.connectivity.PacManager; 138import com.android.server.connectivity.PermissionMonitor; 139import com.android.server.connectivity.Tethering; 140import com.android.server.connectivity.Vpn; 141import com.android.server.net.BaseNetworkObserver; 142import com.android.server.net.LockdownVpnTracker; 143 144import com.google.android.collect.Lists; 145 146import org.xmlpull.v1.XmlPullParser; 147import org.xmlpull.v1.XmlPullParserException; 148 149import java.io.File; 150import java.io.FileDescriptor; 151import java.io.FileNotFoundException; 152import java.io.FileReader; 153import java.io.IOException; 154import java.io.PrintWriter; 155import java.net.Inet4Address; 156import java.net.InetAddress; 157import java.net.UnknownHostException; 158import java.util.ArrayDeque; 159import java.util.ArrayList; 160import java.util.Arrays; 161import java.util.Collection; 162import java.util.HashMap; 163import java.util.HashSet; 164import java.util.List; 165import java.util.Map; 166import java.util.Objects; 167import java.util.SortedSet; 168import java.util.TreeSet; 169 170/** 171 * @hide 172 */ 173public class ConnectivityService extends IConnectivityManager.Stub 174 implements PendingIntent.OnFinished { 175 private static final String TAG = "ConnectivityService"; 176 177 private static final boolean DBG = true; 178 private static final boolean VDBG = false; 179 180 private static final boolean LOGD_RULES = false; 181 private static final boolean LOGD_BLOCKED_NETWORKINFO = true; 182 183 // TODO: create better separation between radio types and network types 184 185 // how long to wait before switching back to a radio's default network 186 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 187 // system property that can override the above value 188 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 189 "android.telephony.apn-restore"; 190 191 // How long to wait before putting up a "This network doesn't have an Internet connection, 192 // connect anyway?" dialog after the user selects a network that doesn't validate. 193 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 194 195 // How long to delay to removal of a pending intent based request. 196 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 197 private final int mReleasePendingIntentDelayMs; 198 199 private Tethering mTethering; 200 201 private final PermissionMonitor mPermissionMonitor; 202 203 private KeyStore mKeyStore; 204 205 @GuardedBy("mVpns") 206 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 207 208 private boolean mLockdownEnabled; 209 private LockdownVpnTracker mLockdownTracker; 210 211 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 212 private Object mRulesLock = new Object(); 213 /** Currently active network rules by UID. */ 214 @GuardedBy("mRulesLock") 215 private SparseIntArray mUidRules = new SparseIntArray(); 216 /** Set of ifaces that are costly. */ 217 @GuardedBy("mRulesLock") 218 private ArraySet<String> mMeteredIfaces = new ArraySet<>(); 219 /** Flag indicating if background data is restricted. */ 220 @GuardedBy("mRulesLock") 221 private boolean mRestrictBackground; 222 223 final private Context mContext; 224 private int mNetworkPreference; 225 // 0 is full bad, 100 is full good 226 private int mDefaultInetConditionPublished = 0; 227 228 private int mNumDnsEntries; 229 230 private boolean mTestMode; 231 private static ConnectivityService sServiceInstance; 232 233 private INetworkManagementService mNetd; 234 private INetworkStatsService mStatsService; 235 private INetworkPolicyManager mPolicyManager; 236 237 private String mCurrentTcpBufferSizes; 238 239 private static final int ENABLED = 1; 240 private static final int DISABLED = 0; 241 242 private static final SparseArray<String> sMagicDecoderRing = MessageUtils.findMessageNames( 243 new Class[] { AsyncChannel.class, ConnectivityService.class, NetworkAgent.class }); 244 245 private enum ReapUnvalidatedNetworks { 246 // Tear down networks that have no chance (e.g. even if validated) of becoming 247 // the highest scoring network satisfying a NetworkRequest. This should be passed when 248 // all networks have been rematched against all NetworkRequests. 249 REAP, 250 // Don't reap networks. This should be passed when some networks have not yet been 251 // rematched against all NetworkRequests. 252 DONT_REAP 253 }; 254 255 /** 256 * used internally to change our mobile data enabled flag 257 */ 258 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 259 260 /** 261 * used internally to clear a wakelock when transitioning 262 * from one net to another. Clear happens when we get a new 263 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 264 * after a timeout if no network is found (typically 1 min). 265 */ 266 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 267 268 /** 269 * used internally to reload global proxy settings 270 */ 271 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 272 273 /** 274 * PAC manager has received new port. 275 */ 276 private static final int EVENT_PROXY_HAS_CHANGED = 16; 277 278 /** 279 * used internally when registering NetworkFactories 280 * obj = NetworkFactoryInfo 281 */ 282 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 283 284 /** 285 * used internally when registering NetworkAgents 286 * obj = Messenger 287 */ 288 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 289 290 /** 291 * used to add a network request 292 * includes a NetworkRequestInfo 293 */ 294 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 295 296 /** 297 * indicates a timeout period is over - check if we had a network yet or not 298 * and if not, call the timeout calback (but leave the request live until they 299 * cancel it. 300 * includes a NetworkRequestInfo 301 */ 302 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 303 304 /** 305 * used to add a network listener - no request 306 * includes a NetworkRequestInfo 307 */ 308 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 309 310 /** 311 * used to remove a network request, either a listener or a real request 312 * arg1 = UID of caller 313 * obj = NetworkRequest 314 */ 315 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 316 317 /** 318 * used internally when registering NetworkFactories 319 * obj = Messenger 320 */ 321 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 322 323 /** 324 * used internally to expire a wakelock when transitioning 325 * from one net to another. Expire happens when we fail to find 326 * a new network (typically after 1 minute) - 327 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 328 * a replacement network. 329 */ 330 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 331 332 /** 333 * Used internally to indicate the system is ready. 334 */ 335 private static final int EVENT_SYSTEM_READY = 25; 336 337 /** 338 * used to add a network request with a pending intent 339 * obj = NetworkRequestInfo 340 */ 341 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 342 343 /** 344 * used to remove a pending intent and its associated network request. 345 * arg1 = UID of caller 346 * obj = PendingIntent 347 */ 348 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 349 350 /** 351 * used to specify whether a network should be used even if unvalidated. 352 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 353 * arg2 = whether to remember this choice in the future (1 or 0) 354 * obj = network 355 */ 356 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 357 358 /** 359 * used to ask the user to confirm a connection to an unvalidated network. 360 * obj = network 361 */ 362 private static final int EVENT_PROMPT_UNVALIDATED = 29; 363 364 /** 365 * used internally to (re)configure mobile data always-on settings. 366 */ 367 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 368 369 /** 370 * used to add a network listener with a pending intent 371 * obj = NetworkRequestInfo 372 */ 373 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 374 375 /** Handler thread used for both of the handlers below. */ 376 @VisibleForTesting 377 protected final HandlerThread mHandlerThread; 378 /** Handler used for internal events. */ 379 final private InternalHandler mHandler; 380 /** Handler used for incoming {@link NetworkStateTracker} events. */ 381 final private NetworkStateTrackerHandler mTrackerHandler; 382 383 private boolean mSystemReady; 384 private Intent mInitialBroadcast; 385 386 private PowerManager.WakeLock mNetTransitionWakeLock; 387 private String mNetTransitionWakeLockCausedBy = ""; 388 private int mNetTransitionWakeLockSerialNumber; 389 private int mNetTransitionWakeLockTimeout; 390 private final PowerManager.WakeLock mPendingIntentWakeLock; 391 392 // used in DBG mode to track inet condition reports 393 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 394 private ArrayList mInetLog; 395 396 // track the current default http proxy - tell the world if we get a new one (real change) 397 private volatile ProxyInfo mDefaultProxy = null; 398 private Object mProxyLock = new Object(); 399 private boolean mDefaultProxyDisabled = false; 400 401 // track the global proxy. 402 private ProxyInfo mGlobalProxy = null; 403 404 private PacManager mPacManager = null; 405 406 final private SettingsObserver mSettingsObserver; 407 408 private UserManager mUserManager; 409 410 NetworkConfig[] mNetConfigs; 411 int mNetworksDefined; 412 413 // the set of network types that can only be enabled by system/sig apps 414 List mProtectedNetworks; 415 416 private DataConnectionStats mDataConnectionStats; 417 418 TelephonyManager mTelephonyManager; 419 420 private KeepaliveTracker mKeepaliveTracker; 421 422 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 423 private final static int MIN_NET_ID = 100; // some reserved marks 424 private final static int MAX_NET_ID = 65535; 425 private int mNextNetId = MIN_NET_ID; 426 427 // sequence number of NetworkRequests 428 private int mNextNetworkRequestId = 1; 429 430 // NetworkRequest activity String log entries. 431 private static final int MAX_NETWORK_REQUEST_LOGS = 20; 432 private final LocalLog mNetworkRequestInfoLogs = new LocalLog(MAX_NETWORK_REQUEST_LOGS); 433 434 // Array of <Network,ReadOnlyLocalLogs> tracking network validation and results 435 private static final int MAX_VALIDATION_LOGS = 10; 436 private static class ValidationLog { 437 final Network mNetwork; 438 final String mNetworkExtraInfo; 439 final ReadOnlyLocalLog mLog; 440 441 ValidationLog(Network network, String networkExtraInfo, ReadOnlyLocalLog log) { 442 mNetwork = network; 443 mNetworkExtraInfo = networkExtraInfo; 444 mLog = log; 445 } 446 } 447 private final ArrayDeque<ValidationLog> mValidationLogs = 448 new ArrayDeque<ValidationLog>(MAX_VALIDATION_LOGS); 449 450 private void addValidationLogs(ReadOnlyLocalLog log, Network network, String networkExtraInfo) { 451 synchronized(mValidationLogs) { 452 while (mValidationLogs.size() >= MAX_VALIDATION_LOGS) { 453 mValidationLogs.removeLast(); 454 } 455 mValidationLogs.addFirst(new ValidationLog(network, networkExtraInfo, log)); 456 } 457 } 458 459 /** 460 * Implements support for the legacy "one network per network type" model. 461 * 462 * We used to have a static array of NetworkStateTrackers, one for each 463 * network type, but that doesn't work any more now that we can have, 464 * for example, more that one wifi network. This class stores all the 465 * NetworkAgentInfo objects that support a given type, but the legacy 466 * API will only see the first one. 467 * 468 * It serves two main purposes: 469 * 470 * 1. Provide information about "the network for a given type" (since this 471 * API only supports one). 472 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 473 * the first network for a given type changes, or if the default network 474 * changes. 475 */ 476 private class LegacyTypeTracker { 477 478 private static final boolean DBG = true; 479 private static final boolean VDBG = false; 480 481 /** 482 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 483 * Each list holds references to all NetworkAgentInfos that are used to 484 * satisfy requests for that network type. 485 * 486 * This array is built out at startup such that an unsupported network 487 * doesn't get an ArrayList instance, making this a tristate: 488 * unsupported, supported but not active and active. 489 * 490 * The actual lists are populated when we scan the network types that 491 * are supported on this device. 492 */ 493 private ArrayList<NetworkAgentInfo> mTypeLists[]; 494 495 public LegacyTypeTracker() { 496 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 497 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 498 } 499 500 public void addSupportedType(int type) { 501 if (mTypeLists[type] != null) { 502 throw new IllegalStateException( 503 "legacy list for type " + type + "already initialized"); 504 } 505 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 506 } 507 508 public boolean isTypeSupported(int type) { 509 return isNetworkTypeValid(type) && mTypeLists[type] != null; 510 } 511 512 public NetworkAgentInfo getNetworkForType(int type) { 513 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 514 return mTypeLists[type].get(0); 515 } else { 516 return null; 517 } 518 } 519 520 private void maybeLogBroadcast(NetworkAgentInfo nai, DetailedState state, int type, 521 boolean isDefaultNetwork) { 522 if (DBG) { 523 log("Sending " + state + 524 " broadcast for type " + type + " " + nai.name() + 525 " isDefaultNetwork=" + isDefaultNetwork); 526 } 527 } 528 529 /** Adds the given network to the specified legacy type list. */ 530 public void add(int type, NetworkAgentInfo nai) { 531 if (!isTypeSupported(type)) { 532 return; // Invalid network type. 533 } 534 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 535 536 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 537 if (list.contains(nai)) { 538 return; 539 } 540 541 list.add(nai); 542 543 // Send a broadcast if this is the first network of its type or if it's the default. 544 final boolean isDefaultNetwork = isDefaultNetwork(nai); 545 if (list.size() == 1 || isDefaultNetwork) { 546 maybeLogBroadcast(nai, DetailedState.CONNECTED, type, isDefaultNetwork); 547 sendLegacyNetworkBroadcast(nai, DetailedState.CONNECTED, type); 548 } 549 } 550 551 /** Removes the given network from the specified legacy type list. */ 552 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 553 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 554 if (list == null || list.isEmpty()) { 555 return; 556 } 557 558 final boolean wasFirstNetwork = list.get(0).equals(nai); 559 560 if (!list.remove(nai)) { 561 return; 562 } 563 564 final DetailedState state = DetailedState.DISCONNECTED; 565 566 if (wasFirstNetwork || wasDefault) { 567 maybeLogBroadcast(nai, state, type, wasDefault); 568 sendLegacyNetworkBroadcast(nai, state, type); 569 } 570 571 if (!list.isEmpty() && wasFirstNetwork) { 572 if (DBG) log("Other network available for type " + type + 573 ", sending connected broadcast"); 574 final NetworkAgentInfo replacement = list.get(0); 575 maybeLogBroadcast(replacement, state, type, isDefaultNetwork(replacement)); 576 sendLegacyNetworkBroadcast(replacement, state, type); 577 } 578 } 579 580 /** Removes the given network from all legacy type lists. */ 581 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 582 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 583 for (int type = 0; type < mTypeLists.length; type++) { 584 remove(type, nai, wasDefault); 585 } 586 } 587 588 // send out another legacy broadcast - currently only used for suspend/unsuspend 589 // toggle 590 public void update(NetworkAgentInfo nai) { 591 final boolean isDefault = isDefaultNetwork(nai); 592 final DetailedState state = nai.networkInfo.getDetailedState(); 593 for (int type = 0; type < mTypeLists.length; type++) { 594 final ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 595 final boolean contains = (list != null && list.contains(nai)); 596 final boolean isFirst = (list != null && list.size() > 0 && nai == list.get(0)); 597 if (isFirst || (contains && isDefault)) { 598 maybeLogBroadcast(nai, state, type, isDefault); 599 sendLegacyNetworkBroadcast(nai, state, type); 600 } 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 pw.println("mLegacyTypeTracker:"); 614 pw.increaseIndent(); 615 pw.print("Supported types:"); 616 for (int type = 0; type < mTypeLists.length; type++) { 617 if (mTypeLists[type] != null) pw.print(" " + type); 618 } 619 pw.println(); 620 pw.println("Current state:"); 621 pw.increaseIndent(); 622 for (int type = 0; type < mTypeLists.length; type++) { 623 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 624 for (NetworkAgentInfo nai : mTypeLists[type]) { 625 pw.println(type + " " + naiToString(nai)); 626 } 627 } 628 pw.decreaseIndent(); 629 pw.decreaseIndent(); 630 pw.println(); 631 } 632 } 633 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 634 635 @VisibleForTesting 636 protected HandlerThread createHandlerThread() { 637 return new HandlerThread("ConnectivityServiceThread"); 638 } 639 640 public ConnectivityService(Context context, INetworkManagementService netManager, 641 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 642 if (DBG) log("ConnectivityService starting up"); 643 644 mDefaultRequest = createInternetRequestForTransport(-1); 645 NetworkRequestInfo defaultNRI = new NetworkRequestInfo(null, mDefaultRequest, 646 new Binder(), NetworkRequestType.REQUEST); 647 mNetworkRequests.put(mDefaultRequest, defaultNRI); 648 mNetworkRequestInfoLogs.log("REGISTER " + defaultNRI); 649 650 mDefaultMobileDataRequest = createInternetRequestForTransport( 651 NetworkCapabilities.TRANSPORT_CELLULAR); 652 653 mHandlerThread = createHandlerThread(); 654 mHandlerThread.start(); 655 mHandler = new InternalHandler(mHandlerThread.getLooper()); 656 mTrackerHandler = new NetworkStateTrackerHandler(mHandlerThread.getLooper()); 657 658 // setup our unique device name 659 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 660 String id = Settings.Secure.getString(context.getContentResolver(), 661 Settings.Secure.ANDROID_ID); 662 if (id != null && id.length() > 0) { 663 String name = new String("android-").concat(id); 664 SystemProperties.set("net.hostname", name); 665 } 666 } 667 668 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 669 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 670 671 mContext = checkNotNull(context, "missing Context"); 672 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 673 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 674 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 675 mKeyStore = KeyStore.getInstance(); 676 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 677 678 try { 679 mPolicyManager.setConnectivityListener(mPolicyListener); 680 mRestrictBackground = mPolicyManager.getRestrictBackground(); 681 } catch (RemoteException e) { 682 // ouch, no rules updates means some processes may never get network 683 loge("unable to register INetworkPolicyListener" + e); 684 } 685 686 final PowerManager powerManager = (PowerManager) context.getSystemService( 687 Context.POWER_SERVICE); 688 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 689 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 690 com.android.internal.R.integer.config_networkTransitionTimeout); 691 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 692 693 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 694 695 // TODO: What is the "correct" way to do determine if this is a wifi only device? 696 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 697 log("wifiOnly=" + wifiOnly); 698 String[] naStrings = context.getResources().getStringArray( 699 com.android.internal.R.array.networkAttributes); 700 for (String naString : naStrings) { 701 try { 702 NetworkConfig n = new NetworkConfig(naString); 703 if (VDBG) log("naString=" + naString + " config=" + n); 704 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 705 loge("Error in networkAttributes - ignoring attempt to define type " + 706 n.type); 707 continue; 708 } 709 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 710 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 711 n.type); 712 continue; 713 } 714 if (mNetConfigs[n.type] != null) { 715 loge("Error in networkAttributes - ignoring attempt to redefine type " + 716 n.type); 717 continue; 718 } 719 mLegacyTypeTracker.addSupportedType(n.type); 720 721 mNetConfigs[n.type] = n; 722 mNetworksDefined++; 723 } catch(Exception e) { 724 // ignore it - leave the entry null 725 } 726 } 727 728 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 729 if (mNetConfigs[TYPE_VPN] == null) { 730 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 731 // don't need to add TYPE_VPN to mNetConfigs. 732 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 733 mNetworksDefined++; // used only in the log() statement below. 734 } 735 736 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 737 738 mProtectedNetworks = new ArrayList<Integer>(); 739 int[] protectedNetworks = context.getResources().getIntArray( 740 com.android.internal.R.array.config_protectedNetworks); 741 for (int p : protectedNetworks) { 742 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 743 mProtectedNetworks.add(p); 744 } else { 745 if (DBG) loge("Ignoring protectedNetwork " + p); 746 } 747 } 748 749 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 750 && SystemProperties.get("ro.build.type").equals("eng"); 751 752 mTethering = new Tethering(mContext, mNetd, statsService); 753 754 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 755 756 //set up the listener for user state for creating user VPNs 757 IntentFilter intentFilter = new IntentFilter(); 758 intentFilter.addAction(Intent.ACTION_USER_STARTED); 759 intentFilter.addAction(Intent.ACTION_USER_STOPPED); 760 intentFilter.addAction(Intent.ACTION_USER_ADDED); 761 intentFilter.addAction(Intent.ACTION_USER_REMOVED); 762 intentFilter.addAction(Intent.ACTION_USER_UNLOCKED); 763 mContext.registerReceiverAsUser( 764 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 765 766 try { 767 mNetd.registerObserver(mTethering); 768 mNetd.registerObserver(mDataActivityObserver); 769 } catch (RemoteException e) { 770 loge("Error registering observer :" + e); 771 } 772 773 if (DBG) { 774 mInetLog = new ArrayList(); 775 } 776 777 mSettingsObserver = new SettingsObserver(mContext, mHandler); 778 registerSettingsCallbacks(); 779 780 mDataConnectionStats = new DataConnectionStats(mContext); 781 mDataConnectionStats.startMonitoring(); 782 783 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 784 785 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 786 787 mKeepaliveTracker = new KeepaliveTracker(mHandler); 788 } 789 790 private NetworkRequest createInternetRequestForTransport(int transportType) { 791 NetworkCapabilities netCap = new NetworkCapabilities(); 792 netCap.addCapability(NET_CAPABILITY_INTERNET); 793 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 794 if (transportType > -1) { 795 netCap.addTransportType(transportType); 796 } 797 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 798 } 799 800 private void handleMobileDataAlwaysOn() { 801 final boolean enable = (Settings.Global.getInt( 802 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 803 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 804 if (enable == isEnabled) { 805 return; // Nothing to do. 806 } 807 808 if (enable) { 809 handleRegisterNetworkRequest(new NetworkRequestInfo( 810 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestType.REQUEST)); 811 } else { 812 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 813 } 814 } 815 816 private void registerSettingsCallbacks() { 817 // Watch for global HTTP proxy changes. 818 mSettingsObserver.observe( 819 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 820 EVENT_APPLY_GLOBAL_HTTP_PROXY); 821 822 // Watch for whether or not to keep mobile data always on. 823 mSettingsObserver.observe( 824 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 825 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 826 } 827 828 private synchronized int nextNetworkRequestId() { 829 return mNextNetworkRequestId++; 830 } 831 832 @VisibleForTesting 833 protected int reserveNetId() { 834 synchronized (mNetworkForNetId) { 835 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 836 int netId = mNextNetId; 837 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 838 // Make sure NetID unused. http://b/16815182 839 if (!mNetIdInUse.get(netId)) { 840 mNetIdInUse.put(netId, true); 841 return netId; 842 } 843 } 844 } 845 throw new IllegalStateException("No free netIds"); 846 } 847 848 private NetworkState getFilteredNetworkState(int networkType, int uid, boolean ignoreBlocked) { 849 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 850 final NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 851 final NetworkState state; 852 if (nai != null) { 853 state = nai.getNetworkState(); 854 state.networkInfo.setType(networkType); 855 } else { 856 final NetworkInfo info = new NetworkInfo(networkType, 0, 857 getNetworkTypeName(networkType), ""); 858 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 859 info.setIsAvailable(true); 860 state = new NetworkState(info, new LinkProperties(), new NetworkCapabilities(), 861 null, null, null); 862 } 863 filterNetworkStateForUid(state, uid, ignoreBlocked); 864 return state; 865 } else { 866 return NetworkState.EMPTY; 867 } 868 } 869 870 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 871 if (network == null) { 872 return null; 873 } 874 synchronized (mNetworkForNetId) { 875 return mNetworkForNetId.get(network.netId); 876 } 877 } 878 879 private Network[] getVpnUnderlyingNetworks(int uid) { 880 if (!mLockdownEnabled) { 881 int user = UserHandle.getUserId(uid); 882 synchronized (mVpns) { 883 Vpn vpn = mVpns.get(user); 884 if (vpn != null && vpn.appliesToUid(uid)) { 885 return vpn.getUnderlyingNetworks(); 886 } 887 } 888 } 889 return null; 890 } 891 892 private NetworkState getUnfilteredActiveNetworkState(int uid) { 893 NetworkAgentInfo nai = getDefaultNetwork(); 894 895 final Network[] networks = getVpnUnderlyingNetworks(uid); 896 if (networks != null) { 897 // getUnderlyingNetworks() returns: 898 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 899 // empty array => the VPN explicitly said "no default network". 900 // non-empty array => the VPN specified one or more default networks; we use the 901 // first one. 902 if (networks.length > 0) { 903 nai = getNetworkAgentInfoForNetwork(networks[0]); 904 } else { 905 nai = null; 906 } 907 } 908 909 if (nai != null) { 910 return nai.getNetworkState(); 911 } else { 912 return NetworkState.EMPTY; 913 } 914 } 915 916 /** 917 * Check if UID should be blocked from using the network with the given LinkProperties. 918 */ 919 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid, 920 boolean ignoreBlocked) { 921 // Networks aren't blocked when ignoring blocked status 922 if (ignoreBlocked) return false; 923 // Networks are never blocked for system services 924 if (uid < Process.FIRST_APPLICATION_UID) return false; 925 926 final boolean networkMetered; 927 final int uidRules; 928 929 synchronized (mVpns) { 930 final Vpn vpn = mVpns.get(UserHandle.getUserId(uid)); 931 if (vpn != null && vpn.isBlockingUid(uid)) { 932 return true; 933 } 934 } 935 936 final String iface = (lp == null ? "" : lp.getInterfaceName()); 937 synchronized (mRulesLock) { 938 networkMetered = mMeteredIfaces.contains(iface); 939 uidRules = mUidRules.get(uid, RULE_NONE); 940 } 941 942 boolean allowed = true; 943 // Check Data Saver Mode first... 944 if (networkMetered) { 945 if ((uidRules & RULE_REJECT_METERED) != 0) { 946 if (LOGD_RULES) Log.d(TAG, "uid " + uid + " is blacklisted"); 947 // Explicitly blacklisted. 948 allowed = false; 949 } else { 950 allowed = !mRestrictBackground 951 || (uidRules & RULE_ALLOW_METERED) != 0 952 || (uidRules & RULE_TEMPORARY_ALLOW_METERED) != 0; 953 if (LOGD_RULES) Log.d(TAG, "allowed status for uid " + uid + " when" 954 + " mRestrictBackground=" + mRestrictBackground 955 + ", whitelisted=" + ((uidRules & RULE_ALLOW_METERED) != 0) 956 + ", tempWhitelist= + ((uidRules & RULE_TEMPORARY_ALLOW_METERED) != 0)" 957 + ": " + allowed); 958 } 959 } 960 // ...then power restrictions. 961 if (allowed) { 962 allowed = (uidRules & RULE_REJECT_ALL) == 0; 963 if (LOGD_RULES) Log.d(TAG, "allowed status for uid " + uid + " when" 964 + " rule is " + uidRulesToString(uidRules) + ": " + allowed); 965 } 966 return !allowed; 967 } 968 969 private void maybeLogBlockedNetworkInfo(NetworkInfo ni, int uid) { 970 if (ni == null || !LOGD_BLOCKED_NETWORKINFO) return; 971 boolean removed = false; 972 boolean added = false; 973 synchronized (mBlockedAppUids) { 974 if (ni.getDetailedState() == DetailedState.BLOCKED && mBlockedAppUids.add(uid)) { 975 added = true; 976 } else if (ni.isConnected() && mBlockedAppUids.remove(uid)) { 977 removed = true; 978 } 979 } 980 if (added) log("Returning blocked NetworkInfo to uid=" + uid); 981 else if (removed) log("Returning unblocked NetworkInfo to uid=" + uid); 982 } 983 984 /** 985 * Apply any relevant filters to {@link NetworkState} for the given UID. For 986 * example, this may mark the network as {@link DetailedState#BLOCKED} based 987 * on {@link #isNetworkWithLinkPropertiesBlocked}, or 988 * {@link NetworkInfo#isMetered()} based on network policies. 989 */ 990 private void filterNetworkStateForUid(NetworkState state, int uid, boolean ignoreBlocked) { 991 if (state == null || state.networkInfo == null || state.linkProperties == null) return; 992 993 if (isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid, ignoreBlocked)) { 994 state.networkInfo.setDetailedState(DetailedState.BLOCKED, null, null); 995 } 996 if (mLockdownTracker != null) { 997 mLockdownTracker.augmentNetworkInfo(state.networkInfo); 998 } 999 1000 // TODO: apply metered state closer to NetworkAgentInfo 1001 final long token = Binder.clearCallingIdentity(); 1002 try { 1003 state.networkInfo.setMetered(mPolicyManager.isNetworkMetered(state)); 1004 } catch (RemoteException e) { 1005 } finally { 1006 Binder.restoreCallingIdentity(token); 1007 } 1008 } 1009 1010 /** 1011 * Return NetworkInfo for the active (i.e., connected) network interface. 1012 * It is assumed that at most one network is active at a time. If more 1013 * than one is active, it is indeterminate which will be returned. 1014 * @return the info for the active network, or {@code null} if none is 1015 * active 1016 */ 1017 @Override 1018 public NetworkInfo getActiveNetworkInfo() { 1019 enforceAccessPermission(); 1020 final int uid = Binder.getCallingUid(); 1021 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1022 filterNetworkStateForUid(state, uid, false); 1023 maybeLogBlockedNetworkInfo(state.networkInfo, uid); 1024 return state.networkInfo; 1025 } 1026 1027 @Override 1028 public Network getActiveNetwork() { 1029 enforceAccessPermission(); 1030 return getActiveNetworkForUidInternal(Binder.getCallingUid(), false); 1031 } 1032 1033 @Override 1034 public Network getActiveNetworkForUid(int uid, boolean ignoreBlocked) { 1035 enforceConnectivityInternalPermission(); 1036 return getActiveNetworkForUidInternal(uid, ignoreBlocked); 1037 } 1038 1039 private Network getActiveNetworkForUidInternal(final int uid, boolean ignoreBlocked) { 1040 final int user = UserHandle.getUserId(uid); 1041 int vpnNetId = NETID_UNSET; 1042 synchronized (mVpns) { 1043 final Vpn vpn = mVpns.get(user); 1044 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 1045 } 1046 NetworkAgentInfo nai; 1047 if (vpnNetId != NETID_UNSET) { 1048 synchronized (mNetworkForNetId) { 1049 nai = mNetworkForNetId.get(vpnNetId); 1050 } 1051 if (nai != null) return nai.network; 1052 } 1053 nai = getDefaultNetwork(); 1054 if (nai != null 1055 && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid, ignoreBlocked)) { 1056 nai = null; 1057 } 1058 return nai != null ? nai.network : null; 1059 } 1060 1061 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1062 enforceAccessPermission(); 1063 final int uid = Binder.getCallingUid(); 1064 NetworkState state = getUnfilteredActiveNetworkState(uid); 1065 return state.networkInfo; 1066 } 1067 1068 @Override 1069 public NetworkInfo getActiveNetworkInfoForUid(int uid, boolean ignoreBlocked) { 1070 enforceConnectivityInternalPermission(); 1071 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1072 filterNetworkStateForUid(state, uid, ignoreBlocked); 1073 return state.networkInfo; 1074 } 1075 1076 @Override 1077 public NetworkInfo getNetworkInfo(int networkType) { 1078 enforceAccessPermission(); 1079 final int uid = Binder.getCallingUid(); 1080 if (getVpnUnderlyingNetworks(uid) != null) { 1081 // A VPN is active, so we may need to return one of its underlying networks. This 1082 // information is not available in LegacyTypeTracker, so we have to get it from 1083 // getUnfilteredActiveNetworkState. 1084 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1085 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1086 filterNetworkStateForUid(state, uid, false); 1087 return state.networkInfo; 1088 } 1089 } 1090 final NetworkState state = getFilteredNetworkState(networkType, uid, false); 1091 return state.networkInfo; 1092 } 1093 1094 @Override 1095 public NetworkInfo getNetworkInfoForUid(Network network, int uid, boolean ignoreBlocked) { 1096 enforceAccessPermission(); 1097 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1098 if (nai != null) { 1099 final NetworkState state = nai.getNetworkState(); 1100 filterNetworkStateForUid(state, uid, ignoreBlocked); 1101 return state.networkInfo; 1102 } else { 1103 return null; 1104 } 1105 } 1106 1107 @Override 1108 public NetworkInfo[] getAllNetworkInfo() { 1109 enforceAccessPermission(); 1110 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1111 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1112 networkType++) { 1113 NetworkInfo info = getNetworkInfo(networkType); 1114 if (info != null) { 1115 result.add(info); 1116 } 1117 } 1118 return result.toArray(new NetworkInfo[result.size()]); 1119 } 1120 1121 @Override 1122 public Network getNetworkForType(int networkType) { 1123 enforceAccessPermission(); 1124 final int uid = Binder.getCallingUid(); 1125 NetworkState state = getFilteredNetworkState(networkType, uid, false); 1126 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid, false)) { 1127 return state.network; 1128 } 1129 return null; 1130 } 1131 1132 @Override 1133 public Network[] getAllNetworks() { 1134 enforceAccessPermission(); 1135 synchronized (mNetworkForNetId) { 1136 final Network[] result = new Network[mNetworkForNetId.size()]; 1137 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1138 result[i] = mNetworkForNetId.valueAt(i).network; 1139 } 1140 return result; 1141 } 1142 } 1143 1144 @Override 1145 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1146 // The basic principle is: if an app's traffic could possibly go over a 1147 // network, without the app doing anything multinetwork-specific, 1148 // (hence, by "default"), then include that network's capabilities in 1149 // the array. 1150 // 1151 // In the normal case, app traffic only goes over the system's default 1152 // network connection, so that's the only network returned. 1153 // 1154 // With a VPN in force, some app traffic may go into the VPN, and thus 1155 // over whatever underlying networks the VPN specifies, while other app 1156 // traffic may go over the system default network (e.g.: a split-tunnel 1157 // VPN, or an app disallowed by the VPN), so the set of networks 1158 // returned includes the VPN's underlying networks and the system 1159 // default. 1160 enforceAccessPermission(); 1161 1162 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1163 1164 NetworkAgentInfo nai = getDefaultNetwork(); 1165 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1166 if (nc != null) { 1167 result.put(nai.network, nc); 1168 } 1169 1170 if (!mLockdownEnabled) { 1171 synchronized (mVpns) { 1172 Vpn vpn = mVpns.get(userId); 1173 if (vpn != null) { 1174 Network[] networks = vpn.getUnderlyingNetworks(); 1175 if (networks != null) { 1176 for (Network network : networks) { 1177 nai = getNetworkAgentInfoForNetwork(network); 1178 nc = getNetworkCapabilitiesInternal(nai); 1179 if (nc != null) { 1180 result.put(network, nc); 1181 } 1182 } 1183 } 1184 } 1185 } 1186 } 1187 1188 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1189 out = result.values().toArray(out); 1190 return out; 1191 } 1192 1193 @Override 1194 public boolean isNetworkSupported(int networkType) { 1195 enforceAccessPermission(); 1196 return mLegacyTypeTracker.isTypeSupported(networkType); 1197 } 1198 1199 /** 1200 * Return LinkProperties for the active (i.e., connected) default 1201 * network interface. It is assumed that at most one default network 1202 * is active at a time. If more than one is active, it is indeterminate 1203 * which will be returned. 1204 * @return the ip properties for the active network, or {@code null} if 1205 * none is active 1206 */ 1207 @Override 1208 public LinkProperties getActiveLinkProperties() { 1209 enforceAccessPermission(); 1210 final int uid = Binder.getCallingUid(); 1211 NetworkState state = getUnfilteredActiveNetworkState(uid); 1212 return state.linkProperties; 1213 } 1214 1215 @Override 1216 public LinkProperties getLinkPropertiesForType(int networkType) { 1217 enforceAccessPermission(); 1218 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1219 if (nai != null) { 1220 synchronized (nai) { 1221 return new LinkProperties(nai.linkProperties); 1222 } 1223 } 1224 return null; 1225 } 1226 1227 // TODO - this should be ALL networks 1228 @Override 1229 public LinkProperties getLinkProperties(Network network) { 1230 enforceAccessPermission(); 1231 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1232 if (nai != null) { 1233 synchronized (nai) { 1234 return new LinkProperties(nai.linkProperties); 1235 } 1236 } 1237 return null; 1238 } 1239 1240 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1241 if (nai != null) { 1242 synchronized (nai) { 1243 if (nai.networkCapabilities != null) { 1244 return new NetworkCapabilities(nai.networkCapabilities); 1245 } 1246 } 1247 } 1248 return null; 1249 } 1250 1251 @Override 1252 public NetworkCapabilities getNetworkCapabilities(Network network) { 1253 enforceAccessPermission(); 1254 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1255 } 1256 1257 @Override 1258 public NetworkState[] getAllNetworkState() { 1259 // Require internal since we're handing out IMSI details 1260 enforceConnectivityInternalPermission(); 1261 1262 final ArrayList<NetworkState> result = Lists.newArrayList(); 1263 for (Network network : getAllNetworks()) { 1264 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1265 if (nai != null) { 1266 result.add(nai.getNetworkState()); 1267 } 1268 } 1269 return result.toArray(new NetworkState[result.size()]); 1270 } 1271 1272 @Override 1273 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1274 enforceAccessPermission(); 1275 final int uid = Binder.getCallingUid(); 1276 final long token = Binder.clearCallingIdentity(); 1277 try { 1278 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1279 if (state.networkInfo != null) { 1280 try { 1281 return mPolicyManager.getNetworkQuotaInfo(state); 1282 } catch (RemoteException e) { 1283 } 1284 } 1285 return null; 1286 } finally { 1287 Binder.restoreCallingIdentity(token); 1288 } 1289 } 1290 1291 @Override 1292 public boolean isActiveNetworkMetered() { 1293 enforceAccessPermission(); 1294 1295 final NetworkInfo info = getActiveNetworkInfo(); 1296 return (info != null) ? info.isMetered() : false; 1297 } 1298 1299 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1300 @Override 1301 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1302 int deviceType = Integer.parseInt(label); 1303 sendDataActivityBroadcast(deviceType, active, tsNanos); 1304 } 1305 }; 1306 1307 /** 1308 * Ensure that a network route exists to deliver traffic to the specified 1309 * host via the specified network interface. 1310 * @param networkType the type of the network over which traffic to the 1311 * specified host is to be routed 1312 * @param hostAddress the IP address of the host to which the route is 1313 * desired 1314 * @return {@code true} on success, {@code false} on failure 1315 */ 1316 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1317 enforceChangePermission(); 1318 if (mProtectedNetworks.contains(networkType)) { 1319 enforceConnectivityInternalPermission(); 1320 } 1321 1322 InetAddress addr; 1323 try { 1324 addr = InetAddress.getByAddress(hostAddress); 1325 } catch (UnknownHostException e) { 1326 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1327 return false; 1328 } 1329 1330 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1331 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1332 return false; 1333 } 1334 1335 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1336 if (nai == null) { 1337 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1338 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1339 } else { 1340 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1341 } 1342 return false; 1343 } 1344 1345 DetailedState netState; 1346 synchronized (nai) { 1347 netState = nai.networkInfo.getDetailedState(); 1348 } 1349 1350 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1351 if (VDBG) { 1352 log("requestRouteToHostAddress on down network " 1353 + "(" + networkType + ") - dropped" 1354 + " netState=" + netState); 1355 } 1356 return false; 1357 } 1358 1359 final int uid = Binder.getCallingUid(); 1360 final long token = Binder.clearCallingIdentity(); 1361 try { 1362 LinkProperties lp; 1363 int netId; 1364 synchronized (nai) { 1365 lp = nai.linkProperties; 1366 netId = nai.network.netId; 1367 } 1368 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1369 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1370 return ok; 1371 } finally { 1372 Binder.restoreCallingIdentity(token); 1373 } 1374 } 1375 1376 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1377 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1378 if (bestRoute == null) { 1379 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1380 } else { 1381 String iface = bestRoute.getInterface(); 1382 if (bestRoute.getGateway().equals(addr)) { 1383 // if there is no better route, add the implied hostroute for our gateway 1384 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1385 } else { 1386 // if we will connect to this through another route, add a direct route 1387 // to it's gateway 1388 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1389 } 1390 } 1391 if (DBG) log("Adding legacy route " + bestRoute + 1392 " for UID/PID " + uid + "/" + Binder.getCallingPid()); 1393 try { 1394 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1395 } catch (Exception e) { 1396 // never crash - catch them all 1397 if (DBG) loge("Exception trying to add a route: " + e); 1398 return false; 1399 } 1400 return true; 1401 } 1402 1403 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1404 @Override 1405 public void onUidRulesChanged(int uid, int uidRules) { 1406 // caller is NPMS, since we only register with them 1407 if (LOGD_RULES) { 1408 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1409 } 1410 1411 synchronized (mRulesLock) { 1412 // skip update when we've already applied rules 1413 final int oldRules = mUidRules.get(uid, RULE_NONE); 1414 if (oldRules == uidRules) return; 1415 1416 if (uidRules == RULE_NONE) { 1417 mUidRules.delete(uid); 1418 } else { 1419 mUidRules.put(uid, uidRules); 1420 } 1421 } 1422 1423 // TODO: notify UID when it has requested targeted updates 1424 } 1425 1426 @Override 1427 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1428 // caller is NPMS, since we only register with them 1429 if (LOGD_RULES) { 1430 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1431 } 1432 1433 synchronized (mRulesLock) { 1434 mMeteredIfaces.clear(); 1435 for (String iface : meteredIfaces) { 1436 mMeteredIfaces.add(iface); 1437 } 1438 } 1439 } 1440 1441 @Override 1442 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1443 // caller is NPMS, since we only register with them 1444 if (LOGD_RULES) { 1445 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1446 } 1447 1448 synchronized (mRulesLock) { 1449 mRestrictBackground = restrictBackground; 1450 } 1451 1452 if (restrictBackground) { 1453 log("onRestrictBackgroundChanged(true): disabling tethering"); 1454 mTethering.untetherAll(); 1455 } 1456 } 1457 1458 @Override 1459 public void onRestrictBackgroundWhitelistChanged(int uid, boolean whitelisted) { 1460 if (LOGD_RULES) { 1461 // caller is NPMS, since we only register with them 1462 log("onRestrictBackgroundWhitelistChanged(uid=" + uid + ", whitelisted=" 1463 + whitelisted + ")"); 1464 } 1465 } 1466 @Override 1467 public void onRestrictBackgroundBlacklistChanged(int uid, boolean blacklisted) { 1468 if (LOGD_RULES) { 1469 // caller is NPMS, since we only register with them 1470 log("onRestrictBackgroundBlacklistChanged(uid=" + uid + ", blacklisted=" 1471 + blacklisted + ")"); 1472 } 1473 } 1474 }; 1475 1476 /** 1477 * Require that the caller is either in the same user or has appropriate permission to interact 1478 * across users. 1479 * 1480 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1481 */ 1482 private void enforceCrossUserPermission(int userId) { 1483 if (userId == UserHandle.getCallingUserId()) { 1484 // Not a cross-user call. 1485 return; 1486 } 1487 mContext.enforceCallingOrSelfPermission( 1488 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1489 "ConnectivityService"); 1490 } 1491 1492 private void enforceInternetPermission() { 1493 mContext.enforceCallingOrSelfPermission( 1494 android.Manifest.permission.INTERNET, 1495 "ConnectivityService"); 1496 } 1497 1498 private void enforceAccessPermission() { 1499 mContext.enforceCallingOrSelfPermission( 1500 android.Manifest.permission.ACCESS_NETWORK_STATE, 1501 "ConnectivityService"); 1502 } 1503 1504 private void enforceChangePermission() { 1505 ConnectivityManager.enforceChangePermission(mContext); 1506 } 1507 1508 private void enforceTetherAccessPermission() { 1509 mContext.enforceCallingOrSelfPermission( 1510 android.Manifest.permission.ACCESS_NETWORK_STATE, 1511 "ConnectivityService"); 1512 } 1513 1514 private void enforceConnectivityInternalPermission() { 1515 mContext.enforceCallingOrSelfPermission( 1516 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1517 "ConnectivityService"); 1518 } 1519 1520 private void enforceKeepalivePermission() { 1521 mContext.enforceCallingOrSelfPermission(KeepaliveTracker.PERMISSION, "ConnectivityService"); 1522 } 1523 1524 public void sendConnectedBroadcast(NetworkInfo info) { 1525 enforceConnectivityInternalPermission(); 1526 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1527 } 1528 1529 private void sendInetConditionBroadcast(NetworkInfo info) { 1530 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1531 } 1532 1533 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1534 if (mLockdownTracker != null) { 1535 info = new NetworkInfo(info); 1536 mLockdownTracker.augmentNetworkInfo(info); 1537 } 1538 1539 Intent intent = new Intent(bcastType); 1540 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1541 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1542 if (info.isFailover()) { 1543 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1544 info.setFailover(false); 1545 } 1546 if (info.getReason() != null) { 1547 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1548 } 1549 if (info.getExtraInfo() != null) { 1550 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1551 info.getExtraInfo()); 1552 } 1553 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1554 return intent; 1555 } 1556 1557 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1558 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1559 } 1560 1561 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1562 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1563 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1564 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1565 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1566 final long ident = Binder.clearCallingIdentity(); 1567 try { 1568 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1569 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1570 } finally { 1571 Binder.restoreCallingIdentity(ident); 1572 } 1573 } 1574 1575 private void sendStickyBroadcast(Intent intent) { 1576 synchronized(this) { 1577 if (!mSystemReady) { 1578 mInitialBroadcast = new Intent(intent); 1579 } 1580 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1581 if (VDBG) { 1582 log("sendStickyBroadcast: action=" + intent.getAction()); 1583 } 1584 1585 Bundle options = null; 1586 final long ident = Binder.clearCallingIdentity(); 1587 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1588 final NetworkInfo ni = intent.getParcelableExtra( 1589 ConnectivityManager.EXTRA_NETWORK_INFO); 1590 if (ni.getType() == ConnectivityManager.TYPE_MOBILE_SUPL) { 1591 intent.setAction(ConnectivityManager.CONNECTIVITY_ACTION_SUPL); 1592 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1593 } else { 1594 BroadcastOptions opts = BroadcastOptions.makeBasic(); 1595 opts.setMaxManifestReceiverApiLevel(Build.VERSION_CODES.M); 1596 options = opts.toBundle(); 1597 } 1598 final IBatteryStats bs = BatteryStatsService.getService(); 1599 try { 1600 bs.noteConnectivityChanged(intent.getIntExtra( 1601 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1602 ni != null ? ni.getState().toString() : "?"); 1603 } catch (RemoteException e) { 1604 } 1605 } 1606 try { 1607 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL, options); 1608 } finally { 1609 Binder.restoreCallingIdentity(ident); 1610 } 1611 } 1612 } 1613 1614 void systemReady() { 1615 loadGlobalProxy(); 1616 1617 synchronized(this) { 1618 mSystemReady = true; 1619 if (mInitialBroadcast != null) { 1620 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1621 mInitialBroadcast = null; 1622 } 1623 } 1624 // load the global proxy at startup 1625 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1626 1627 // Try bringing up tracker, but KeyStore won't be ready yet for secondary users so wait 1628 // for user to unlock device too. 1629 updateLockdownVpn(); 1630 1631 // Configure whether mobile data is always on. 1632 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1633 1634 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1635 1636 mPermissionMonitor.startMonitoring(); 1637 } 1638 1639 /** 1640 * Setup data activity tracking for the given network. 1641 * 1642 * Every {@code setupDataActivityTracking} should be paired with a 1643 * {@link #removeDataActivityTracking} for cleanup. 1644 */ 1645 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1646 final String iface = networkAgent.linkProperties.getInterfaceName(); 1647 1648 final int timeout; 1649 int type = ConnectivityManager.TYPE_NONE; 1650 1651 if (networkAgent.networkCapabilities.hasTransport( 1652 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1653 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1654 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1655 10); 1656 type = ConnectivityManager.TYPE_MOBILE; 1657 } else if (networkAgent.networkCapabilities.hasTransport( 1658 NetworkCapabilities.TRANSPORT_WIFI)) { 1659 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1660 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1661 15); 1662 type = ConnectivityManager.TYPE_WIFI; 1663 } else { 1664 // do not track any other networks 1665 timeout = 0; 1666 } 1667 1668 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1669 try { 1670 mNetd.addIdleTimer(iface, timeout, type); 1671 } catch (Exception e) { 1672 // You shall not crash! 1673 loge("Exception in setupDataActivityTracking " + e); 1674 } 1675 } 1676 } 1677 1678 /** 1679 * Remove data activity tracking when network disconnects. 1680 */ 1681 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1682 final String iface = networkAgent.linkProperties.getInterfaceName(); 1683 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1684 1685 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1686 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1687 try { 1688 // the call fails silently if no idletimer setup for this interface 1689 mNetd.removeIdleTimer(iface); 1690 } catch (Exception e) { 1691 loge("Exception in removeDataActivityTracking " + e); 1692 } 1693 } 1694 } 1695 1696 /** 1697 * Reads the network specific MTU size from reources. 1698 * and set it on it's iface. 1699 */ 1700 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1701 final String iface = newLp.getInterfaceName(); 1702 final int mtu = newLp.getMtu(); 1703 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1704 if (VDBG) log("identical MTU - not setting"); 1705 return; 1706 } 1707 1708 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1709 if (mtu != 0) loge("Unexpected mtu value: " + mtu + ", " + iface); 1710 return; 1711 } 1712 1713 // Cannot set MTU without interface name 1714 if (TextUtils.isEmpty(iface)) { 1715 loge("Setting MTU size with null iface."); 1716 return; 1717 } 1718 1719 try { 1720 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 1721 mNetd.setMtu(iface, mtu); 1722 } catch (Exception e) { 1723 Slog.e(TAG, "exception in setMtu()" + e); 1724 } 1725 } 1726 1727 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1728 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1729 1730 // Overridden for testing purposes to avoid writing to SystemProperties. 1731 @VisibleForTesting 1732 protected int getDefaultTcpRwnd() { 1733 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1734 } 1735 1736 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1737 if (isDefaultNetwork(nai) == false) { 1738 return; 1739 } 1740 1741 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1742 String[] values = null; 1743 if (tcpBufferSizes != null) { 1744 values = tcpBufferSizes.split(","); 1745 } 1746 1747 if (values == null || values.length != 6) { 1748 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1749 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1750 values = tcpBufferSizes.split(","); 1751 } 1752 1753 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1754 1755 try { 1756 if (VDBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1757 1758 final String prefix = "/sys/kernel/ipv4/tcp_"; 1759 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1760 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1761 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1762 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1763 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1764 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1765 mCurrentTcpBufferSizes = tcpBufferSizes; 1766 } catch (IOException e) { 1767 loge("Can't set TCP buffer sizes:" + e); 1768 } 1769 1770 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1771 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1772 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1773 if (rwndValue != 0) { 1774 SystemProperties.set(sysctlKey, rwndValue.toString()); 1775 } 1776 } 1777 1778 private void flushVmDnsCache() { 1779 /* 1780 * Tell the VMs to toss their DNS caches 1781 */ 1782 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1783 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1784 /* 1785 * Connectivity events can happen before boot has completed ... 1786 */ 1787 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1788 final long ident = Binder.clearCallingIdentity(); 1789 try { 1790 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1791 } finally { 1792 Binder.restoreCallingIdentity(ident); 1793 } 1794 } 1795 1796 @Override 1797 public int getRestoreDefaultNetworkDelay(int networkType) { 1798 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1799 NETWORK_RESTORE_DELAY_PROP_NAME); 1800 if(restoreDefaultNetworkDelayStr != null && 1801 restoreDefaultNetworkDelayStr.length() != 0) { 1802 try { 1803 return Integer.parseInt(restoreDefaultNetworkDelayStr); 1804 } catch (NumberFormatException e) { 1805 } 1806 } 1807 // if the system property isn't set, use the value for the apn type 1808 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1809 1810 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1811 (mNetConfigs[networkType] != null)) { 1812 ret = mNetConfigs[networkType].restoreTime; 1813 } 1814 return ret; 1815 } 1816 1817 private boolean argsContain(String[] args, String target) { 1818 for (String arg : args) { 1819 if (arg.equals(target)) return true; 1820 } 1821 return false; 1822 } 1823 1824 private void dumpNetworkDiagnostics(IndentingPrintWriter pw) { 1825 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1826 final long DIAG_TIME_MS = 5000; 1827 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1828 // Start gathering diagnostic information. 1829 netDiags.add(new NetworkDiagnostics( 1830 nai.network, 1831 new LinkProperties(nai.linkProperties), // Must be a copy. 1832 DIAG_TIME_MS)); 1833 } 1834 1835 for (NetworkDiagnostics netDiag : netDiags) { 1836 pw.println(); 1837 netDiag.waitForMeasurements(); 1838 netDiag.dump(pw); 1839 } 1840 } 1841 1842 @Override 1843 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1844 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1845 if (mContext.checkCallingOrSelfPermission( 1846 android.Manifest.permission.DUMP) 1847 != PackageManager.PERMISSION_GRANTED) { 1848 pw.println("Permission Denial: can't dump ConnectivityService " + 1849 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1850 Binder.getCallingUid()); 1851 return; 1852 } 1853 1854 if (argsContain(args, "--diag")) { 1855 dumpNetworkDiagnostics(pw); 1856 return; 1857 } 1858 1859 pw.print("NetworkFactories for:"); 1860 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1861 pw.print(" " + nfi.name); 1862 } 1863 pw.println(); 1864 pw.println(); 1865 1866 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 1867 pw.print("Active default network: "); 1868 if (defaultNai == null) { 1869 pw.println("none"); 1870 } else { 1871 pw.println(defaultNai.network.netId); 1872 } 1873 pw.println(); 1874 1875 pw.println("Current Networks:"); 1876 pw.increaseIndent(); 1877 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1878 pw.println(nai.toString()); 1879 pw.increaseIndent(); 1880 pw.println("Requests:"); 1881 pw.increaseIndent(); 1882 for (int i = 0; i < nai.networkRequests.size(); i++) { 1883 pw.println(nai.networkRequests.valueAt(i).toString()); 1884 } 1885 pw.decreaseIndent(); 1886 pw.println("Lingered:"); 1887 pw.increaseIndent(); 1888 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1889 pw.decreaseIndent(); 1890 pw.decreaseIndent(); 1891 } 1892 pw.decreaseIndent(); 1893 pw.println(); 1894 1895 pw.println("Metered Interfaces:"); 1896 pw.increaseIndent(); 1897 for (String value : mMeteredIfaces) { 1898 pw.println(value); 1899 } 1900 pw.decreaseIndent(); 1901 pw.println(); 1902 1903 pw.print("Restrict background: "); 1904 pw.println(mRestrictBackground); 1905 pw.println(); 1906 1907 pw.println("Status for known UIDs:"); 1908 pw.increaseIndent(); 1909 final int size = mUidRules.size(); 1910 for (int i = 0; i < size; i++) { 1911 final int uid = mUidRules.keyAt(i); 1912 pw.print("UID="); 1913 pw.print(uid); 1914 final int uidRules = mUidRules.get(uid, RULE_NONE); 1915 pw.print(" rules="); 1916 pw.print(uidRulesToString(uidRules)); 1917 pw.println(); 1918 } 1919 pw.println(); 1920 pw.decreaseIndent(); 1921 1922 pw.println("Network Requests:"); 1923 pw.increaseIndent(); 1924 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1925 pw.println(nri.toString()); 1926 } 1927 pw.println(); 1928 pw.decreaseIndent(); 1929 1930 mLegacyTypeTracker.dump(pw); 1931 1932 synchronized (this) { 1933 pw.print("mNetTransitionWakeLock: currently " + 1934 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1935 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1936 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1937 } else { 1938 pw.println(", last requested never"); 1939 } 1940 } 1941 1942 pw.println(); 1943 mTethering.dump(fd, pw, args); 1944 1945 pw.println(); 1946 mKeepaliveTracker.dump(pw); 1947 1948 pw.println(); 1949 1950 if (mInetLog != null && mInetLog.size() > 0) { 1951 pw.println(); 1952 pw.println("Inet condition reports:"); 1953 pw.increaseIndent(); 1954 for(int i = 0; i < mInetLog.size(); i++) { 1955 pw.println(mInetLog.get(i)); 1956 } 1957 pw.decreaseIndent(); 1958 } 1959 1960 if (argsContain(args, "--short") == false) { 1961 pw.println(); 1962 synchronized (mValidationLogs) { 1963 pw.println("mValidationLogs (most recent first):"); 1964 for (ValidationLog p : mValidationLogs) { 1965 pw.println(p.mNetwork + " - " + p.mNetworkExtraInfo); 1966 pw.increaseIndent(); 1967 p.mLog.dump(fd, pw, args); 1968 pw.decreaseIndent(); 1969 } 1970 } 1971 1972 pw.println(); 1973 pw.println("mNetworkRequestInfoLogs (most recent first):"); 1974 pw.increaseIndent(); 1975 mNetworkRequestInfoLogs.reverseDump(fd, pw, args); 1976 pw.decreaseIndent(); 1977 } 1978 } 1979 1980 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, int what) { 1981 if (nai.network == null) return false; 1982 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1983 if (officialNai != null && officialNai.equals(nai)) return true; 1984 if (officialNai != null || VDBG) { 1985 final String msg = sMagicDecoderRing.get(what, Integer.toString(what)); 1986 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1987 " - " + nai); 1988 } 1989 return false; 1990 } 1991 1992 private boolean isRequest(NetworkRequest request) { 1993 return mNetworkRequests.get(request).isRequest(); 1994 } 1995 1996 // must be stateless - things change under us. 1997 private class NetworkStateTrackerHandler extends Handler { 1998 public NetworkStateTrackerHandler(Looper looper) { 1999 super(looper); 2000 } 2001 2002 private boolean maybeHandleAsyncChannelMessage(Message msg) { 2003 switch (msg.what) { 2004 default: 2005 return false; 2006 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 2007 handleAsyncChannelHalfConnect(msg); 2008 break; 2009 } 2010 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 2011 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2012 if (nai != null) nai.asyncChannel.disconnect(); 2013 break; 2014 } 2015 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 2016 handleAsyncChannelDisconnected(msg); 2017 break; 2018 } 2019 } 2020 return true; 2021 } 2022 2023 private void maybeHandleNetworkAgentMessage(Message msg) { 2024 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2025 if (nai == null) { 2026 if (VDBG) { 2027 final String what = sMagicDecoderRing.get(msg.what, Integer.toString(msg.what)); 2028 log(String.format("%s from unknown NetworkAgent", what)); 2029 } 2030 return; 2031 } 2032 2033 switch (msg.what) { 2034 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 2035 final NetworkCapabilities networkCapabilities = (NetworkCapabilities) msg.obj; 2036 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL) || 2037 networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 2038 Slog.wtf(TAG, "BUG: " + nai + " has CS-managed capability."); 2039 } 2040 if (nai.everConnected && !nai.networkCapabilities.equalImmutableCapabilities( 2041 networkCapabilities)) { 2042 Slog.wtf(TAG, "BUG: " + nai + " changed immutable capabilities: " 2043 + nai.networkCapabilities + " -> " + networkCapabilities); 2044 } 2045 updateCapabilities(nai, networkCapabilities); 2046 break; 2047 } 2048 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 2049 if (VDBG) { 2050 log("Update of LinkProperties for " + nai.name() + 2051 "; created=" + nai.created + 2052 "; everConnected=" + nai.everConnected); 2053 } 2054 LinkProperties oldLp = nai.linkProperties; 2055 synchronized (nai) { 2056 nai.linkProperties = (LinkProperties)msg.obj; 2057 } 2058 if (nai.everConnected) updateLinkProperties(nai, oldLp); 2059 break; 2060 } 2061 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 2062 NetworkInfo info = (NetworkInfo) msg.obj; 2063 updateNetworkInfo(nai, info); 2064 break; 2065 } 2066 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 2067 Integer score = (Integer) msg.obj; 2068 if (score != null) updateNetworkScore(nai, score.intValue()); 2069 break; 2070 } 2071 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 2072 try { 2073 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2074 } catch (Exception e) { 2075 // Never crash! 2076 loge("Exception in addVpnUidRanges: " + e); 2077 } 2078 break; 2079 } 2080 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 2081 try { 2082 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2083 } catch (Exception e) { 2084 // Never crash! 2085 loge("Exception in removeVpnUidRanges: " + e); 2086 } 2087 break; 2088 } 2089 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 2090 if (nai.everConnected && !nai.networkMisc.explicitlySelected) { 2091 loge("ERROR: already-connected network explicitly selected."); 2092 } 2093 nai.networkMisc.explicitlySelected = true; 2094 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 2095 break; 2096 } 2097 case NetworkAgent.EVENT_PACKET_KEEPALIVE: { 2098 mKeepaliveTracker.handleEventPacketKeepalive(nai, msg); 2099 break; 2100 } 2101 } 2102 } 2103 2104 private boolean maybeHandleNetworkMonitorMessage(Message msg) { 2105 switch (msg.what) { 2106 default: 2107 return false; 2108 case NetworkMonitor.EVENT_NETWORK_TESTED: { 2109 final NetworkAgentInfo nai; 2110 synchronized (mNetworkForNetId) { 2111 nai = mNetworkForNetId.get(msg.arg2); 2112 } 2113 if (nai != null) { 2114 final boolean valid = 2115 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2116 if (DBG) log(nai.name() + " validation " + (valid ? "passed" : "failed") + 2117 (msg.obj == null ? "" : " with redirect to " + (String)msg.obj)); 2118 if (valid != nai.lastValidated) { 2119 final int oldScore = nai.getCurrentScore(); 2120 nai.lastValidated = valid; 2121 nai.everValidated |= valid; 2122 updateCapabilities(nai, nai.networkCapabilities); 2123 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2124 if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); 2125 } 2126 updateInetCondition(nai); 2127 // Let the NetworkAgent know the state of its network 2128 Bundle redirectUrlBundle = new Bundle(); 2129 redirectUrlBundle.putString(NetworkAgent.REDIRECT_URL_KEY, (String)msg.obj); 2130 nai.asyncChannel.sendMessage( 2131 NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2132 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2133 0, redirectUrlBundle); 2134 } 2135 break; 2136 } 2137 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2138 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2139 if (isLiveNetworkAgent(nai, msg.what)) { 2140 handleLingerComplete(nai); 2141 } 2142 break; 2143 } 2144 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2145 final int netId = msg.arg2; 2146 final boolean visible = (msg.arg1 != 0); 2147 final NetworkAgentInfo nai; 2148 synchronized (mNetworkForNetId) { 2149 nai = mNetworkForNetId.get(netId); 2150 } 2151 // If captive portal status has changed, update capabilities. 2152 if (nai != null && (visible != nai.lastCaptivePortalDetected)) { 2153 nai.lastCaptivePortalDetected = visible; 2154 nai.everCaptivePortalDetected |= visible; 2155 updateCapabilities(nai, nai.networkCapabilities); 2156 } 2157 if (!visible) { 2158 setProvNotificationVisibleIntent(false, netId, null, 0, null, null, false); 2159 } else { 2160 if (nai == null) { 2161 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2162 break; 2163 } 2164 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2165 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), 2166 (PendingIntent)msg.obj, nai.networkMisc.explicitlySelected); 2167 } 2168 break; 2169 } 2170 } 2171 return true; 2172 } 2173 2174 @Override 2175 public void handleMessage(Message msg) { 2176 if (!maybeHandleAsyncChannelMessage(msg) && !maybeHandleNetworkMonitorMessage(msg)) { 2177 maybeHandleNetworkAgentMessage(msg); 2178 } 2179 } 2180 } 2181 2182 private void linger(NetworkAgentInfo nai) { 2183 nai.lingering = true; 2184 NetworkEvent.logEvent(nai.network.netId, NetworkEvent.NETWORK_LINGER); 2185 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 2186 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 2187 } 2188 2189 // Cancel any lingering so the linger timeout doesn't teardown a network. 2190 // This should be called when a network begins satisfying a NetworkRequest. 2191 // Note: depending on what state the NetworkMonitor is in (e.g., 2192 // if it's awaiting captive portal login, or if validation failed), this 2193 // may trigger a re-evaluation of the network. 2194 private void unlinger(NetworkAgentInfo nai) { 2195 nai.networkLingered.clear(); 2196 if (!nai.lingering) return; 2197 nai.lingering = false; 2198 NetworkEvent.logEvent(nai.network.netId, NetworkEvent.NETWORK_UNLINGER); 2199 if (VDBG) log("Canceling linger of " + nai.name()); 2200 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2201 } 2202 2203 private void handleAsyncChannelHalfConnect(Message msg) { 2204 AsyncChannel ac = (AsyncChannel) msg.obj; 2205 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2206 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2207 if (VDBG) log("NetworkFactory connected"); 2208 // A network factory has connected. Send it all current NetworkRequests. 2209 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2210 if (!nri.isRequest()) continue; 2211 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2212 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2213 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2214 } 2215 } else { 2216 loge("Error connecting NetworkFactory"); 2217 mNetworkFactoryInfos.remove(msg.obj); 2218 } 2219 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2220 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2221 if (VDBG) log("NetworkAgent connected"); 2222 // A network agent has requested a connection. Establish the connection. 2223 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2224 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2225 } else { 2226 loge("Error connecting NetworkAgent"); 2227 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2228 if (nai != null) { 2229 final boolean wasDefault = isDefaultNetwork(nai); 2230 synchronized (mNetworkForNetId) { 2231 mNetworkForNetId.remove(nai.network.netId); 2232 mNetIdInUse.delete(nai.network.netId); 2233 } 2234 // Just in case. 2235 mLegacyTypeTracker.remove(nai, wasDefault); 2236 } 2237 } 2238 } 2239 } 2240 2241 private void handleAsyncChannelDisconnected(Message msg) { 2242 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2243 if (nai != null) { 2244 if (DBG) { 2245 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2246 } 2247 // A network agent has disconnected. 2248 // TODO - if we move the logic to the network agent (have them disconnect 2249 // because they lost all their requests or because their score isn't good) 2250 // then they would disconnect organically, report their new state and then 2251 // disconnect the channel. 2252 if (nai.networkInfo.isConnected()) { 2253 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2254 null, null); 2255 } 2256 final boolean wasDefault = isDefaultNetwork(nai); 2257 if (wasDefault) { 2258 mDefaultInetConditionPublished = 0; 2259 // Log default network disconnection before required book-keeping. 2260 // Let rematchAllNetworksAndRequests() below record a new default network event 2261 // if there is a fallback. Taken together, the two form a X -> 0, 0 -> Y sequence 2262 // whose timestamps tell how long it takes to recover a default network. 2263 logDefaultNetworkEvent(null, nai); 2264 } 2265 notifyIfacesChangedForNetworkStats(); 2266 // TODO - we shouldn't send CALLBACK_LOST to requests that can be satisfied 2267 // by other networks that are already connected. Perhaps that can be done by 2268 // sending all CALLBACK_LOST messages (for requests, not listens) at the end 2269 // of rematchAllNetworksAndRequests 2270 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2271 mKeepaliveTracker.handleStopAllKeepalives(nai, 2272 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 2273 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2274 mNetworkAgentInfos.remove(msg.replyTo); 2275 updateClat(null, nai.linkProperties, nai); 2276 synchronized (mNetworkForNetId) { 2277 // Remove the NetworkAgent, but don't mark the netId as 2278 // available until we've told netd to delete it below. 2279 mNetworkForNetId.remove(nai.network.netId); 2280 } 2281 // Remove all previously satisfied requests. 2282 for (int i = 0; i < nai.networkRequests.size(); i++) { 2283 NetworkRequest request = nai.networkRequests.valueAt(i); 2284 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2285 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2286 mNetworkForRequestId.remove(request.requestId); 2287 sendUpdatedScoreToFactories(request, 0); 2288 } 2289 } 2290 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2291 removeDataActivityTracking(nai); 2292 notifyLockdownVpn(nai); 2293 requestNetworkTransitionWakelock(nai.name()); 2294 } 2295 mLegacyTypeTracker.remove(nai, wasDefault); 2296 rematchAllNetworksAndRequests(null, 0); 2297 if (nai.created) { 2298 // Tell netd to clean up the configuration for this network 2299 // (routing rules, DNS, etc). 2300 // This may be slow as it requires a lot of netd shelling out to ip and 2301 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2302 // after we've rematched networks with requests which should make a potential 2303 // fallback network the default or requested a new network from the 2304 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2305 // long time. 2306 try { 2307 mNetd.removeNetwork(nai.network.netId); 2308 } catch (Exception e) { 2309 loge("Exception removing network: " + e); 2310 } 2311 } 2312 synchronized (mNetworkForNetId) { 2313 mNetIdInUse.delete(nai.network.netId); 2314 } 2315 } else { 2316 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2317 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2318 } 2319 } 2320 2321 // If this method proves to be too slow then we can maintain a separate 2322 // pendingIntent => NetworkRequestInfo map. 2323 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2324 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2325 Intent intent = pendingIntent.getIntent(); 2326 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2327 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2328 if (existingPendingIntent != null && 2329 existingPendingIntent.getIntent().filterEquals(intent)) { 2330 return entry.getValue(); 2331 } 2332 } 2333 return null; 2334 } 2335 2336 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2337 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2338 2339 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2340 if (existingRequest != null) { // remove the existing request. 2341 if (DBG) log("Replacing " + existingRequest.request + " with " 2342 + nri.request + " because their intents matched."); 2343 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2344 } 2345 handleRegisterNetworkRequest(nri); 2346 } 2347 2348 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2349 mNetworkRequests.put(nri.request, nri); 2350 mNetworkRequestInfoLogs.log("REGISTER " + nri); 2351 if (!nri.isRequest()) { 2352 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2353 if (nri.request.networkCapabilities.hasSignalStrength() && 2354 network.satisfiesImmutableCapabilitiesOf(nri.request)) { 2355 updateSignalStrengthThresholds(network, "REGISTER", nri.request); 2356 } 2357 } 2358 } 2359 rematchAllNetworksAndRequests(null, 0); 2360 if (nri.isRequest() && mNetworkForRequestId.get(nri.request.requestId) == null) { 2361 sendUpdatedScoreToFactories(nri.request, 0); 2362 } 2363 } 2364 2365 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2366 int callingUid) { 2367 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2368 if (nri != null) { 2369 handleReleaseNetworkRequest(nri.request, callingUid); 2370 } 2371 } 2372 2373 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2374 // This is whether it is satisfying any NetworkRequests or were it to become validated, 2375 // would it have a chance of satisfying any NetworkRequests. 2376 private boolean unneeded(NetworkAgentInfo nai) { 2377 if (!nai.everConnected || nai.isVPN() || nai.lingering) return false; 2378 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2379 // If this Network is already the highest scoring Network for a request, or if 2380 // there is hope for it to become one if it validated, then it is needed. 2381 if (nri.isRequest() && nai.satisfies(nri.request) && 2382 (nai.networkRequests.get(nri.request.requestId) != null || 2383 // Note that this catches two important cases: 2384 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2385 // is currently satisfying the request. This is desirable when 2386 // cellular ends up validating but WiFi does not. 2387 // 2. Unvalidated WiFi will not be reaped when validated cellular 2388 // is currently satisfying the request. This is desirable when 2389 // WiFi ends up validating and out scoring cellular. 2390 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2391 nai.getCurrentScoreAsValidated())) { 2392 return false; 2393 } 2394 } 2395 return true; 2396 } 2397 2398 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2399 NetworkRequestInfo nri = mNetworkRequests.get(request); 2400 if (nri != null) { 2401 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2402 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2403 return; 2404 } 2405 if (VDBG || (DBG && nri.isRequest())) log("releasing NetworkRequest " + request); 2406 nri.unlinkDeathRecipient(); 2407 mNetworkRequests.remove(request); 2408 synchronized (mUidToNetworkRequestCount) { 2409 int requests = mUidToNetworkRequestCount.get(nri.mUid, 0); 2410 if (requests < 1) { 2411 Slog.wtf(TAG, "BUG: too small request count " + requests + " for UID " + 2412 nri.mUid); 2413 } else if (requests == 1) { 2414 mUidToNetworkRequestCount.removeAt( 2415 mUidToNetworkRequestCount.indexOfKey(nri.mUid)); 2416 } else { 2417 mUidToNetworkRequestCount.put(nri.mUid, requests - 1); 2418 } 2419 } 2420 mNetworkRequestInfoLogs.log("RELEASE " + nri); 2421 if (nri.isRequest()) { 2422 // Find all networks that are satisfying this request and remove the request 2423 // from their request lists. 2424 // TODO - it's my understanding that for a request there is only a single 2425 // network satisfying it, so this loop is wasteful 2426 boolean wasKept = false; 2427 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2428 if (nai.networkRequests.get(nri.request.requestId) != null) { 2429 nai.networkRequests.remove(nri.request.requestId); 2430 if (VDBG) { 2431 log(" Removing from current network " + nai.name() + 2432 ", leaving " + nai.networkRequests.size() + 2433 " requests."); 2434 } 2435 if (unneeded(nai)) { 2436 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2437 teardownUnneededNetwork(nai); 2438 } else { 2439 // suspect there should only be one pass through here 2440 // but if any were kept do the check below 2441 wasKept |= true; 2442 } 2443 } 2444 } 2445 2446 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2447 if (nai != null) { 2448 mNetworkForRequestId.remove(nri.request.requestId); 2449 } 2450 // Maintain the illusion. When this request arrived, we might have pretended 2451 // that a network connected to serve it, even though the network was already 2452 // connected. Now that this request has gone away, we might have to pretend 2453 // that the network disconnected. LegacyTypeTracker will generate that 2454 // phantom disconnect for this type. 2455 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2456 boolean doRemove = true; 2457 if (wasKept) { 2458 // check if any of the remaining requests for this network are for the 2459 // same legacy type - if so, don't remove the nai 2460 for (int i = 0; i < nai.networkRequests.size(); i++) { 2461 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2462 if (otherRequest.legacyType == nri.request.legacyType && 2463 isRequest(otherRequest)) { 2464 if (DBG) log(" still have other legacy request - leaving"); 2465 doRemove = false; 2466 } 2467 } 2468 } 2469 2470 if (doRemove) { 2471 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2472 } 2473 } 2474 2475 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2476 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2477 nri.request); 2478 } 2479 } else { 2480 // listens don't have a singular affectedNetwork. Check all networks to see 2481 // if this listen request applies and remove it. 2482 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2483 nai.networkRequests.remove(nri.request.requestId); 2484 if (nri.request.networkCapabilities.hasSignalStrength() && 2485 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 2486 updateSignalStrengthThresholds(nai, "RELEASE", nri.request); 2487 } 2488 } 2489 } 2490 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2491 } 2492 } 2493 2494 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2495 enforceConnectivityInternalPermission(); 2496 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2497 accept ? 1 : 0, always ? 1: 0, network)); 2498 } 2499 2500 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2501 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2502 " accept=" + accept + " always=" + always); 2503 2504 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2505 if (nai == null) { 2506 // Nothing to do. 2507 return; 2508 } 2509 2510 if (nai.everValidated) { 2511 // The network validated while the dialog box was up. Take no action. 2512 return; 2513 } 2514 2515 if (!nai.networkMisc.explicitlySelected) { 2516 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2517 } 2518 2519 if (accept != nai.networkMisc.acceptUnvalidated) { 2520 int oldScore = nai.getCurrentScore(); 2521 nai.networkMisc.acceptUnvalidated = accept; 2522 rematchAllNetworksAndRequests(nai, oldScore); 2523 sendUpdatedScoreToFactories(nai); 2524 } 2525 2526 if (always) { 2527 nai.asyncChannel.sendMessage( 2528 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2529 } 2530 2531 if (!accept) { 2532 // Tell the NetworkAgent to not automatically reconnect to the network. 2533 nai.asyncChannel.sendMessage(NetworkAgent.CMD_PREVENT_AUTOMATIC_RECONNECT); 2534 // Teardown the nework. 2535 teardownUnneededNetwork(nai); 2536 } 2537 2538 } 2539 2540 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2541 if (VDBG) log("scheduleUnvalidatedPrompt " + nai.network); 2542 mHandler.sendMessageDelayed( 2543 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2544 PROMPT_UNVALIDATED_DELAY_MS); 2545 } 2546 2547 private void handlePromptUnvalidated(Network network) { 2548 if (VDBG) log("handlePromptUnvalidated " + network); 2549 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2550 2551 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2552 // we haven't already been told to switch to it regardless of whether it validated or not. 2553 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2554 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2555 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2556 return; 2557 } 2558 2559 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2560 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2561 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2562 intent.setClassName("com.android.settings", 2563 "com.android.settings.wifi.WifiNoInternetDialog"); 2564 2565 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2566 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2567 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2568 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent, true); 2569 } 2570 2571 private class InternalHandler extends Handler { 2572 public InternalHandler(Looper looper) { 2573 super(looper); 2574 } 2575 2576 @Override 2577 public void handleMessage(Message msg) { 2578 switch (msg.what) { 2579 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2580 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2581 String causedBy = null; 2582 synchronized (ConnectivityService.this) { 2583 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2584 mNetTransitionWakeLock.isHeld()) { 2585 mNetTransitionWakeLock.release(); 2586 causedBy = mNetTransitionWakeLockCausedBy; 2587 } else { 2588 break; 2589 } 2590 } 2591 if (VDBG) { 2592 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2593 log("Failed to find a new network - expiring NetTransition Wakelock"); 2594 } else { 2595 log("NetTransition Wakelock (" + 2596 (causedBy == null ? "unknown" : causedBy) + 2597 " cleared because we found a replacement network"); 2598 } 2599 } 2600 break; 2601 } 2602 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2603 handleDeprecatedGlobalHttpProxy(); 2604 break; 2605 } 2606 case EVENT_PROXY_HAS_CHANGED: { 2607 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2608 break; 2609 } 2610 case EVENT_REGISTER_NETWORK_FACTORY: { 2611 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2612 break; 2613 } 2614 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2615 handleUnregisterNetworkFactory((Messenger)msg.obj); 2616 break; 2617 } 2618 case EVENT_REGISTER_NETWORK_AGENT: { 2619 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2620 break; 2621 } 2622 case EVENT_REGISTER_NETWORK_REQUEST: 2623 case EVENT_REGISTER_NETWORK_LISTENER: { 2624 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2625 break; 2626 } 2627 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2628 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2629 handleRegisterNetworkRequestWithIntent(msg); 2630 break; 2631 } 2632 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2633 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2634 break; 2635 } 2636 case EVENT_RELEASE_NETWORK_REQUEST: { 2637 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2638 break; 2639 } 2640 case EVENT_SET_ACCEPT_UNVALIDATED: { 2641 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2642 break; 2643 } 2644 case EVENT_PROMPT_UNVALIDATED: { 2645 handlePromptUnvalidated((Network) msg.obj); 2646 break; 2647 } 2648 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2649 handleMobileDataAlwaysOn(); 2650 break; 2651 } 2652 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2653 case NetworkAgent.CMD_START_PACKET_KEEPALIVE: { 2654 mKeepaliveTracker.handleStartKeepalive(msg); 2655 break; 2656 } 2657 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2658 case NetworkAgent.CMD_STOP_PACKET_KEEPALIVE: { 2659 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork((Network) msg.obj); 2660 int slot = msg.arg1; 2661 int reason = msg.arg2; 2662 mKeepaliveTracker.handleStopKeepalive(nai, slot, reason); 2663 break; 2664 } 2665 case EVENT_SYSTEM_READY: { 2666 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2667 nai.networkMonitor.systemReady = true; 2668 } 2669 break; 2670 } 2671 } 2672 } 2673 } 2674 2675 // javadoc from interface 2676 public int tether(String iface) { 2677 ConnectivityManager.enforceTetherChangePermission(mContext); 2678 if (isTetheringSupported()) { 2679 final int status = mTethering.tether(iface); 2680 if (status == ConnectivityManager.TETHER_ERROR_NO_ERROR) { 2681 try { 2682 mPolicyManager.onTetheringChanged(iface, true); 2683 } catch (RemoteException e) { 2684 } 2685 } 2686 return status; 2687 } else { 2688 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2689 } 2690 } 2691 2692 // javadoc from interface 2693 public int untether(String iface) { 2694 ConnectivityManager.enforceTetherChangePermission(mContext); 2695 2696 if (isTetheringSupported()) { 2697 final int status = mTethering.untether(iface); 2698 if (status == ConnectivityManager.TETHER_ERROR_NO_ERROR) { 2699 try { 2700 mPolicyManager.onTetheringChanged(iface, false); 2701 } catch (RemoteException e) { 2702 } 2703 } 2704 return status; 2705 } else { 2706 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2707 } 2708 } 2709 2710 // javadoc from interface 2711 public int getLastTetherError(String iface) { 2712 enforceTetherAccessPermission(); 2713 2714 if (isTetheringSupported()) { 2715 return mTethering.getLastTetherError(iface); 2716 } else { 2717 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2718 } 2719 } 2720 2721 // TODO - proper iface API for selection by property, inspection, etc 2722 public String[] getTetherableUsbRegexs() { 2723 enforceTetherAccessPermission(); 2724 if (isTetheringSupported()) { 2725 return mTethering.getTetherableUsbRegexs(); 2726 } else { 2727 return new String[0]; 2728 } 2729 } 2730 2731 public String[] getTetherableWifiRegexs() { 2732 enforceTetherAccessPermission(); 2733 if (isTetheringSupported()) { 2734 return mTethering.getTetherableWifiRegexs(); 2735 } else { 2736 return new String[0]; 2737 } 2738 } 2739 2740 public String[] getTetherableBluetoothRegexs() { 2741 enforceTetherAccessPermission(); 2742 if (isTetheringSupported()) { 2743 return mTethering.getTetherableBluetoothRegexs(); 2744 } else { 2745 return new String[0]; 2746 } 2747 } 2748 2749 public int setUsbTethering(boolean enable) { 2750 ConnectivityManager.enforceTetherChangePermission(mContext); 2751 if (isTetheringSupported()) { 2752 return mTethering.setUsbTethering(enable); 2753 } else { 2754 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2755 } 2756 } 2757 2758 // TODO - move iface listing, queries, etc to new module 2759 // javadoc from interface 2760 public String[] getTetherableIfaces() { 2761 enforceTetherAccessPermission(); 2762 return mTethering.getTetherableIfaces(); 2763 } 2764 2765 public String[] getTetheredIfaces() { 2766 enforceTetherAccessPermission(); 2767 return mTethering.getTetheredIfaces(); 2768 } 2769 2770 public String[] getTetheringErroredIfaces() { 2771 enforceTetherAccessPermission(); 2772 return mTethering.getErroredIfaces(); 2773 } 2774 2775 public String[] getTetheredDhcpRanges() { 2776 enforceConnectivityInternalPermission(); 2777 return mTethering.getTetheredDhcpRanges(); 2778 } 2779 2780 // if ro.tether.denied = true we default to no tethering 2781 // gservices could set the secure setting to 1 though to enable it on a build where it 2782 // had previously been turned off. 2783 @Override 2784 public boolean isTetheringSupported() { 2785 enforceTetherAccessPermission(); 2786 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2787 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2788 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2789 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2790 return tetherEnabledInSettings && mUserManager.isAdminUser() && 2791 ((mTethering.getTetherableUsbRegexs().length != 0 || 2792 mTethering.getTetherableWifiRegexs().length != 0 || 2793 mTethering.getTetherableBluetoothRegexs().length != 0) && 2794 mTethering.getUpstreamIfaceTypes().length != 0); 2795 } 2796 2797 @Override 2798 public void startTethering(int type, ResultReceiver receiver, 2799 boolean showProvisioningUi) { 2800 ConnectivityManager.enforceTetherChangePermission(mContext); 2801 if (!isTetheringSupported()) { 2802 receiver.send(ConnectivityManager.TETHER_ERROR_UNSUPPORTED, null); 2803 return; 2804 } 2805 mTethering.startTethering(type, receiver, showProvisioningUi); 2806 } 2807 2808 @Override 2809 public void stopTethering(int type) { 2810 ConnectivityManager.enforceTetherChangePermission(mContext); 2811 mTethering.stopTethering(type); 2812 } 2813 2814 // Called when we lose the default network and have no replacement yet. 2815 // This will automatically be cleared after X seconds or a new default network 2816 // becomes CONNECTED, whichever happens first. The timer is started by the 2817 // first caller and not restarted by subsequent callers. 2818 private void requestNetworkTransitionWakelock(String forWhom) { 2819 int serialNum = 0; 2820 synchronized (this) { 2821 if (mNetTransitionWakeLock.isHeld()) return; 2822 serialNum = ++mNetTransitionWakeLockSerialNumber; 2823 mNetTransitionWakeLock.acquire(); 2824 mNetTransitionWakeLockCausedBy = forWhom; 2825 } 2826 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2827 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2828 mNetTransitionWakeLockTimeout); 2829 return; 2830 } 2831 2832 // 100 percent is full good, 0 is full bad. 2833 public void reportInetCondition(int networkType, int percentage) { 2834 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2835 if (nai == null) return; 2836 reportNetworkConnectivity(nai.network, percentage > 50); 2837 } 2838 2839 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2840 enforceAccessPermission(); 2841 enforceInternetPermission(); 2842 2843 NetworkAgentInfo nai; 2844 if (network == null) { 2845 nai = getDefaultNetwork(); 2846 } else { 2847 nai = getNetworkAgentInfoForNetwork(network); 2848 } 2849 if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || 2850 nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { 2851 return; 2852 } 2853 // Revalidate if the app report does not match our current validated state. 2854 if (hasConnectivity == nai.lastValidated) return; 2855 final int uid = Binder.getCallingUid(); 2856 if (DBG) { 2857 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2858 ") by " + uid); 2859 } 2860 synchronized (nai) { 2861 // Validating a network that has not yet connected could result in a call to 2862 // rematchNetworkAndRequests() which is not meant to work on such networks. 2863 if (!nai.everConnected) return; 2864 2865 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid, false)) return; 2866 2867 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2868 } 2869 } 2870 2871 private ProxyInfo getDefaultProxy() { 2872 // this information is already available as a world read/writable jvm property 2873 // so this API change wouldn't have a benifit. It also breaks the passing 2874 // of proxy info to all the JVMs. 2875 // enforceAccessPermission(); 2876 synchronized (mProxyLock) { 2877 ProxyInfo ret = mGlobalProxy; 2878 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2879 return ret; 2880 } 2881 } 2882 2883 public ProxyInfo getProxyForNetwork(Network network) { 2884 if (network == null) return getDefaultProxy(); 2885 final ProxyInfo globalProxy = getGlobalProxy(); 2886 if (globalProxy != null) return globalProxy; 2887 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2888 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2889 // caller may not have. 2890 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2891 if (nai == null) return null; 2892 synchronized (nai) { 2893 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2894 if (proxyInfo == null) return null; 2895 return new ProxyInfo(proxyInfo); 2896 } 2897 } 2898 2899 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2900 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2901 // proxy is null then there is no proxy in place). 2902 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2903 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2904 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2905 proxy = null; 2906 } 2907 return proxy; 2908 } 2909 2910 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2911 // better for determining if a new proxy broadcast is necessary: 2912 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2913 // avoid unnecessary broadcasts. 2914 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2915 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2916 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2917 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2918 // all set. 2919 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2920 a = canonicalizeProxyInfo(a); 2921 b = canonicalizeProxyInfo(b); 2922 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2923 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2924 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2925 } 2926 2927 public void setGlobalProxy(ProxyInfo proxyProperties) { 2928 enforceConnectivityInternalPermission(); 2929 2930 synchronized (mProxyLock) { 2931 if (proxyProperties == mGlobalProxy) return; 2932 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2933 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2934 2935 String host = ""; 2936 int port = 0; 2937 String exclList = ""; 2938 String pacFileUrl = ""; 2939 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2940 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2941 if (!proxyProperties.isValid()) { 2942 if (DBG) 2943 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2944 return; 2945 } 2946 mGlobalProxy = new ProxyInfo(proxyProperties); 2947 host = mGlobalProxy.getHost(); 2948 port = mGlobalProxy.getPort(); 2949 exclList = mGlobalProxy.getExclusionListAsString(); 2950 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2951 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2952 } 2953 } else { 2954 mGlobalProxy = null; 2955 } 2956 ContentResolver res = mContext.getContentResolver(); 2957 final long token = Binder.clearCallingIdentity(); 2958 try { 2959 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2960 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2961 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2962 exclList); 2963 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2964 } finally { 2965 Binder.restoreCallingIdentity(token); 2966 } 2967 2968 if (mGlobalProxy == null) { 2969 proxyProperties = mDefaultProxy; 2970 } 2971 sendProxyBroadcast(proxyProperties); 2972 } 2973 } 2974 2975 private void loadGlobalProxy() { 2976 ContentResolver res = mContext.getContentResolver(); 2977 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2978 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2979 String exclList = Settings.Global.getString(res, 2980 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2981 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2982 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2983 ProxyInfo proxyProperties; 2984 if (!TextUtils.isEmpty(pacFileUrl)) { 2985 proxyProperties = new ProxyInfo(pacFileUrl); 2986 } else { 2987 proxyProperties = new ProxyInfo(host, port, exclList); 2988 } 2989 if (!proxyProperties.isValid()) { 2990 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2991 return; 2992 } 2993 2994 synchronized (mProxyLock) { 2995 mGlobalProxy = proxyProperties; 2996 } 2997 } 2998 } 2999 3000 public ProxyInfo getGlobalProxy() { 3001 // this information is already available as a world read/writable jvm property 3002 // so this API change wouldn't have a benifit. It also breaks the passing 3003 // of proxy info to all the JVMs. 3004 // enforceAccessPermission(); 3005 synchronized (mProxyLock) { 3006 return mGlobalProxy; 3007 } 3008 } 3009 3010 private void handleApplyDefaultProxy(ProxyInfo proxy) { 3011 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3012 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 3013 proxy = null; 3014 } 3015 synchronized (mProxyLock) { 3016 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3017 if (mDefaultProxy == proxy) return; // catches repeated nulls 3018 if (proxy != null && !proxy.isValid()) { 3019 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3020 return; 3021 } 3022 3023 // This call could be coming from the PacManager, containing the port of the local 3024 // proxy. If this new proxy matches the global proxy then copy this proxy to the 3025 // global (to get the correct local port), and send a broadcast. 3026 // TODO: Switch PacManager to have its own message to send back rather than 3027 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 3028 if ((mGlobalProxy != null) && (proxy != null) 3029 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 3030 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 3031 mGlobalProxy = proxy; 3032 sendProxyBroadcast(mGlobalProxy); 3033 return; 3034 } 3035 mDefaultProxy = proxy; 3036 3037 if (mGlobalProxy != null) return; 3038 if (!mDefaultProxyDisabled) { 3039 sendProxyBroadcast(proxy); 3040 } 3041 } 3042 } 3043 3044 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 3045 // This method gets called when any network changes proxy, but the broadcast only ever contains 3046 // the default proxy (even if it hasn't changed). 3047 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 3048 // world where an app might be bound to a non-default network. 3049 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3050 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 3051 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 3052 3053 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 3054 sendProxyBroadcast(getDefaultProxy()); 3055 } 3056 } 3057 3058 private void handleDeprecatedGlobalHttpProxy() { 3059 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3060 Settings.Global.HTTP_PROXY); 3061 if (!TextUtils.isEmpty(proxy)) { 3062 String data[] = proxy.split(":"); 3063 if (data.length == 0) { 3064 return; 3065 } 3066 3067 String proxyHost = data[0]; 3068 int proxyPort = 8080; 3069 if (data.length > 1) { 3070 try { 3071 proxyPort = Integer.parseInt(data[1]); 3072 } catch (NumberFormatException e) { 3073 return; 3074 } 3075 } 3076 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 3077 setGlobalProxy(p); 3078 } 3079 } 3080 3081 private void sendProxyBroadcast(ProxyInfo proxy) { 3082 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 3083 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3084 if (DBG) log("sending Proxy Broadcast for " + proxy); 3085 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3086 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3087 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3088 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3089 final long ident = Binder.clearCallingIdentity(); 3090 try { 3091 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3092 } finally { 3093 Binder.restoreCallingIdentity(ident); 3094 } 3095 } 3096 3097 private static class SettingsObserver extends ContentObserver { 3098 final private HashMap<Uri, Integer> mUriEventMap; 3099 final private Context mContext; 3100 final private Handler mHandler; 3101 3102 SettingsObserver(Context context, Handler handler) { 3103 super(null); 3104 mUriEventMap = new HashMap<Uri, Integer>(); 3105 mContext = context; 3106 mHandler = handler; 3107 } 3108 3109 void observe(Uri uri, int what) { 3110 mUriEventMap.put(uri, what); 3111 final ContentResolver resolver = mContext.getContentResolver(); 3112 resolver.registerContentObserver(uri, false, this); 3113 } 3114 3115 @Override 3116 public void onChange(boolean selfChange) { 3117 Slog.wtf(TAG, "Should never be reached."); 3118 } 3119 3120 @Override 3121 public void onChange(boolean selfChange, Uri uri) { 3122 final Integer what = mUriEventMap.get(uri); 3123 if (what != null) { 3124 mHandler.obtainMessage(what.intValue()).sendToTarget(); 3125 } else { 3126 loge("No matching event to send for URI=" + uri); 3127 } 3128 } 3129 } 3130 3131 private static void log(String s) { 3132 Slog.d(TAG, s); 3133 } 3134 3135 private static void loge(String s) { 3136 Slog.e(TAG, s); 3137 } 3138 3139 private static <T> T checkNotNull(T value, String message) { 3140 if (value == null) { 3141 throw new NullPointerException(message); 3142 } 3143 return value; 3144 } 3145 3146 /** 3147 * Prepare for a VPN application. 3148 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3149 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3150 * 3151 * @param oldPackage Package name of the application which currently controls VPN, which will 3152 * be replaced. If there is no such application, this should should either be 3153 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3154 * @param newPackage Package name of the application which should gain control of VPN, or 3155 * {@code null} to disable. 3156 * @param userId User for whom to prepare the new VPN. 3157 * 3158 * @hide 3159 */ 3160 @Override 3161 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3162 int userId) { 3163 enforceCrossUserPermission(userId); 3164 throwIfLockdownEnabled(); 3165 3166 synchronized(mVpns) { 3167 Vpn vpn = mVpns.get(userId); 3168 if (vpn != null) { 3169 return vpn.prepare(oldPackage, newPackage); 3170 } else { 3171 return false; 3172 } 3173 } 3174 } 3175 3176 /** 3177 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3178 * This method is used by system-privileged apps. 3179 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3180 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3181 * 3182 * @param packageName The package for which authorization state should change. 3183 * @param userId User for whom {@code packageName} is installed. 3184 * @param authorized {@code true} if this app should be able to start a VPN connection without 3185 * explicit user approval, {@code false} if not. 3186 * 3187 * @hide 3188 */ 3189 @Override 3190 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3191 enforceCrossUserPermission(userId); 3192 3193 synchronized(mVpns) { 3194 Vpn vpn = mVpns.get(userId); 3195 if (vpn != null) { 3196 vpn.setPackageAuthorization(packageName, authorized); 3197 } 3198 } 3199 } 3200 3201 /** 3202 * Configure a TUN interface and return its file descriptor. Parameters 3203 * are encoded and opaque to this class. This method is used by VpnBuilder 3204 * and not available in ConnectivityManager. Permissions are checked in 3205 * Vpn class. 3206 * @hide 3207 */ 3208 @Override 3209 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3210 throwIfLockdownEnabled(); 3211 int user = UserHandle.getUserId(Binder.getCallingUid()); 3212 synchronized(mVpns) { 3213 return mVpns.get(user).establish(config); 3214 } 3215 } 3216 3217 /** 3218 * Start legacy VPN, controlling native daemons as needed. Creates a 3219 * secondary thread to perform connection work, returning quickly. 3220 */ 3221 @Override 3222 public void startLegacyVpn(VpnProfile profile) { 3223 throwIfLockdownEnabled(); 3224 final LinkProperties egress = getActiveLinkProperties(); 3225 if (egress == null) { 3226 throw new IllegalStateException("Missing active network connection"); 3227 } 3228 int user = UserHandle.getUserId(Binder.getCallingUid()); 3229 synchronized(mVpns) { 3230 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3231 } 3232 } 3233 3234 /** 3235 * Return the information of the ongoing legacy VPN. This method is used 3236 * by VpnSettings and not available in ConnectivityManager. Permissions 3237 * are checked in Vpn class. 3238 */ 3239 @Override 3240 public LegacyVpnInfo getLegacyVpnInfo(int userId) { 3241 enforceCrossUserPermission(userId); 3242 3243 synchronized(mVpns) { 3244 return mVpns.get(userId).getLegacyVpnInfo(); 3245 } 3246 } 3247 3248 /** 3249 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3250 * and not available in ConnectivityManager. 3251 */ 3252 @Override 3253 public VpnInfo[] getAllVpnInfo() { 3254 enforceConnectivityInternalPermission(); 3255 if (mLockdownEnabled) { 3256 return new VpnInfo[0]; 3257 } 3258 3259 synchronized(mVpns) { 3260 List<VpnInfo> infoList = new ArrayList<>(); 3261 for (int i = 0; i < mVpns.size(); i++) { 3262 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3263 if (info != null) { 3264 infoList.add(info); 3265 } 3266 } 3267 return infoList.toArray(new VpnInfo[infoList.size()]); 3268 } 3269 } 3270 3271 /** 3272 * @return VPN information for accounting, or null if we can't retrieve all required 3273 * information, e.g primary underlying iface. 3274 */ 3275 @Nullable 3276 private VpnInfo createVpnInfo(Vpn vpn) { 3277 VpnInfo info = vpn.getVpnInfo(); 3278 if (info == null) { 3279 return null; 3280 } 3281 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3282 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3283 // the underlyingNetworks list. 3284 if (underlyingNetworks == null) { 3285 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3286 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3287 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3288 } 3289 } else if (underlyingNetworks.length > 0) { 3290 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3291 if (linkProperties != null) { 3292 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3293 } 3294 } 3295 return info.primaryUnderlyingIface == null ? null : info; 3296 } 3297 3298 /** 3299 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3300 * VpnDialogs and not available in ConnectivityManager. 3301 * Permissions are checked in Vpn class. 3302 * @hide 3303 */ 3304 @Override 3305 public VpnConfig getVpnConfig(int userId) { 3306 enforceCrossUserPermission(userId); 3307 synchronized(mVpns) { 3308 Vpn vpn = mVpns.get(userId); 3309 if (vpn != null) { 3310 return vpn.getVpnConfig(); 3311 } else { 3312 return null; 3313 } 3314 } 3315 } 3316 3317 @Override 3318 public boolean updateLockdownVpn() { 3319 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3320 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3321 return false; 3322 } 3323 3324 // Tear down existing lockdown if profile was removed 3325 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3326 if (mLockdownEnabled) { 3327 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3328 final VpnProfile profile = VpnProfile.decode( 3329 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3330 if (profile == null) { 3331 Slog.e(TAG, "Lockdown VPN configured invalid profile " + profileName); 3332 setLockdownTracker(null); 3333 return true; 3334 } 3335 int user = UserHandle.getUserId(Binder.getCallingUid()); 3336 synchronized(mVpns) { 3337 Vpn vpn = mVpns.get(user); 3338 if (vpn == null) { 3339 Slog.w(TAG, "VPN for user " + user + " not ready yet. Skipping lockdown"); 3340 return false; 3341 } 3342 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, vpn, profile)); 3343 } 3344 } else { 3345 setLockdownTracker(null); 3346 } 3347 3348 return true; 3349 } 3350 3351 /** 3352 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3353 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3354 */ 3355 private void setLockdownTracker(LockdownVpnTracker tracker) { 3356 // Shutdown any existing tracker 3357 final LockdownVpnTracker existing = mLockdownTracker; 3358 mLockdownTracker = null; 3359 if (existing != null) { 3360 existing.shutdown(); 3361 } 3362 3363 try { 3364 if (tracker != null) { 3365 mNetd.setFirewallEnabled(true); 3366 mNetd.setFirewallInterfaceRule("lo", true); 3367 mLockdownTracker = tracker; 3368 mLockdownTracker.init(); 3369 } else { 3370 mNetd.setFirewallEnabled(false); 3371 } 3372 } catch (RemoteException e) { 3373 // ignored; NMS lives inside system_server 3374 } 3375 } 3376 3377 private void throwIfLockdownEnabled() { 3378 if (mLockdownEnabled) { 3379 throw new IllegalStateException("Unavailable in lockdown mode"); 3380 } 3381 } 3382 3383 /** 3384 * Starts the always-on VPN {@link VpnService} for user {@param userId}, which should perform 3385 * some setup and then call {@code establish()} to connect. 3386 * 3387 * @return {@code true} if the service was started, the service was already connected, or there 3388 * was no always-on VPN to start. {@code false} otherwise. 3389 */ 3390 private boolean startAlwaysOnVpn(int userId) { 3391 synchronized (mVpns) { 3392 Vpn vpn = mVpns.get(userId); 3393 if (vpn == null) { 3394 // Shouldn't happen as all codepaths that point here should have checked the Vpn 3395 // exists already. 3396 Slog.wtf(TAG, "User " + userId + " has no Vpn configuration"); 3397 return false; 3398 } 3399 3400 return vpn.startAlwaysOnVpn(); 3401 } 3402 } 3403 3404 @Override 3405 public boolean setAlwaysOnVpnPackage(int userId, String packageName, boolean lockdown) { 3406 enforceConnectivityInternalPermission(); 3407 enforceCrossUserPermission(userId); 3408 3409 // Can't set always-on VPN if legacy VPN is already in lockdown mode. 3410 if (LockdownVpnTracker.isEnabled()) { 3411 return false; 3412 } 3413 3414 synchronized (mVpns) { 3415 Vpn vpn = mVpns.get(userId); 3416 if (vpn == null) { 3417 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3418 return false; 3419 } 3420 // If the current VPN package is the same as the new one, this is a no-op 3421 if (TextUtils.equals(packageName, vpn.getAlwaysOnPackage())) { 3422 return true; 3423 } 3424 if (!vpn.setAlwaysOnPackage(packageName, lockdown)) { 3425 return false; 3426 } 3427 if (!startAlwaysOnVpn(userId)) { 3428 vpn.setAlwaysOnPackage(null, false); 3429 return false; 3430 } 3431 3432 vpn.saveAlwaysOnPackage(); 3433 } 3434 return true; 3435 } 3436 3437 @Override 3438 public String getAlwaysOnVpnPackage(int userId) { 3439 enforceConnectivityInternalPermission(); 3440 enforceCrossUserPermission(userId); 3441 3442 synchronized (mVpns) { 3443 Vpn vpn = mVpns.get(userId); 3444 if (vpn == null) { 3445 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3446 return null; 3447 } 3448 return vpn.getAlwaysOnPackage(); 3449 } 3450 } 3451 3452 @Override 3453 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3454 // TODO: Remove? Any reason to trigger a provisioning check? 3455 return -1; 3456 } 3457 3458 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3459 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3460 3461 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3462 Intent intent = new Intent(action); 3463 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3464 // Concatenate the range of types onto the range of NetIDs. 3465 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3466 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3467 networkType, null, pendingIntent, false); 3468 } 3469 3470 /** 3471 * Show or hide network provisioning notifications. 3472 * 3473 * We use notifications for two purposes: to notify that a network requires sign in 3474 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3475 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3476 * particular network we can display the notification type that was most recently requested. 3477 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3478 * might first display NO_INTERNET, and then when the captive portal check completes, display 3479 * SIGN_IN. 3480 * 3481 * @param id an identifier that uniquely identifies this notification. This must match 3482 * between show and hide calls. We use the NetID value but for legacy callers 3483 * we concatenate the range of types with the range of NetIDs. 3484 */ 3485 private void setProvNotificationVisibleIntent(boolean visible, int id, 3486 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent, 3487 boolean highPriority) { 3488 if (VDBG || (DBG && visible)) { 3489 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3490 + " networkType=" + getNetworkTypeName(networkType) 3491 + " extraInfo=" + extraInfo + " highPriority=" + highPriority); 3492 } 3493 3494 Resources r = Resources.getSystem(); 3495 NotificationManager notificationManager = (NotificationManager) mContext 3496 .getSystemService(Context.NOTIFICATION_SERVICE); 3497 3498 if (visible) { 3499 CharSequence title; 3500 CharSequence details; 3501 int icon; 3502 if (notifyType == NotificationType.NO_INTERNET && 3503 networkType == ConnectivityManager.TYPE_WIFI) { 3504 title = r.getString(R.string.wifi_no_internet, 0); 3505 details = r.getString(R.string.wifi_no_internet_detailed); 3506 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3507 } else if (notifyType == NotificationType.SIGN_IN) { 3508 switch (networkType) { 3509 case ConnectivityManager.TYPE_WIFI: 3510 title = r.getString(R.string.wifi_available_sign_in, 0); 3511 details = r.getString(R.string.network_available_sign_in_detailed, 3512 extraInfo); 3513 icon = R.drawable.stat_notify_wifi_in_range; 3514 break; 3515 case ConnectivityManager.TYPE_MOBILE: 3516 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3517 title = r.getString(R.string.network_available_sign_in, 0); 3518 // TODO: Change this to pull from NetworkInfo once a printable 3519 // name has been added to it 3520 details = mTelephonyManager.getNetworkOperatorName(); 3521 icon = R.drawable.stat_notify_rssi_in_range; 3522 break; 3523 default: 3524 title = r.getString(R.string.network_available_sign_in, 0); 3525 details = r.getString(R.string.network_available_sign_in_detailed, 3526 extraInfo); 3527 icon = R.drawable.stat_notify_rssi_in_range; 3528 break; 3529 } 3530 } else { 3531 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3532 + getNetworkTypeName(networkType)); 3533 return; 3534 } 3535 3536 Notification notification = new Notification.Builder(mContext) 3537 .setWhen(0) 3538 .setSmallIcon(icon) 3539 .setAutoCancel(true) 3540 .setTicker(title) 3541 .setColor(mContext.getColor( 3542 com.android.internal.R.color.system_notification_accent_color)) 3543 .setContentTitle(title) 3544 .setContentText(details) 3545 .setContentIntent(intent) 3546 .setLocalOnly(true) 3547 .setPriority(highPriority ? 3548 Notification.PRIORITY_HIGH : 3549 Notification.PRIORITY_DEFAULT) 3550 .setDefaults(highPriority ? Notification.DEFAULT_ALL : 0) 3551 .setOnlyAlertOnce(true) 3552 .build(); 3553 3554 try { 3555 notificationManager.notify(NOTIFICATION_ID, id, notification); 3556 } catch (NullPointerException npe) { 3557 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3558 npe.printStackTrace(); 3559 } 3560 } else { 3561 try { 3562 notificationManager.cancel(NOTIFICATION_ID, id); 3563 } catch (NullPointerException npe) { 3564 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3565 npe.printStackTrace(); 3566 } 3567 } 3568 } 3569 3570 /** Location to an updatable file listing carrier provisioning urls. 3571 * An example: 3572 * 3573 * <?xml version="1.0" encoding="utf-8"?> 3574 * <provisioningUrls> 3575 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3576 * </provisioningUrls> 3577 */ 3578 private static final String PROVISIONING_URL_PATH = 3579 "/data/misc/radio/provisioning_urls.xml"; 3580 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3581 3582 /** XML tag for root element. */ 3583 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3584 /** XML tag for individual url */ 3585 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3586 /** XML attribute for mcc */ 3587 private static final String ATTR_MCC = "mcc"; 3588 /** XML attribute for mnc */ 3589 private static final String ATTR_MNC = "mnc"; 3590 3591 private String getProvisioningUrlBaseFromFile() { 3592 FileReader fileReader = null; 3593 XmlPullParser parser = null; 3594 Configuration config = mContext.getResources().getConfiguration(); 3595 3596 try { 3597 fileReader = new FileReader(mProvisioningUrlFile); 3598 parser = Xml.newPullParser(); 3599 parser.setInput(fileReader); 3600 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3601 3602 while (true) { 3603 XmlUtils.nextElement(parser); 3604 3605 String element = parser.getName(); 3606 if (element == null) break; 3607 3608 if (element.equals(TAG_PROVISIONING_URL)) { 3609 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3610 try { 3611 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3612 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3613 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3614 parser.next(); 3615 if (parser.getEventType() == XmlPullParser.TEXT) { 3616 return parser.getText(); 3617 } 3618 } 3619 } 3620 } catch (NumberFormatException e) { 3621 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3622 } 3623 } 3624 } 3625 return null; 3626 } catch (FileNotFoundException e) { 3627 loge("Carrier Provisioning Urls file not found"); 3628 } catch (XmlPullParserException e) { 3629 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3630 } catch (IOException e) { 3631 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3632 } finally { 3633 if (fileReader != null) { 3634 try { 3635 fileReader.close(); 3636 } catch (IOException e) {} 3637 } 3638 } 3639 return null; 3640 } 3641 3642 @Override 3643 public String getMobileProvisioningUrl() { 3644 enforceConnectivityInternalPermission(); 3645 String url = getProvisioningUrlBaseFromFile(); 3646 if (TextUtils.isEmpty(url)) { 3647 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3648 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3649 } else { 3650 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3651 } 3652 // populate the iccid, imei and phone number in the provisioning url. 3653 if (!TextUtils.isEmpty(url)) { 3654 String phoneNumber = mTelephonyManager.getLine1Number(); 3655 if (TextUtils.isEmpty(phoneNumber)) { 3656 phoneNumber = "0000000000"; 3657 } 3658 url = String.format(url, 3659 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3660 mTelephonyManager.getDeviceId() /* IMEI */, 3661 phoneNumber /* Phone numer */); 3662 } 3663 3664 return url; 3665 } 3666 3667 @Override 3668 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3669 String action) { 3670 enforceConnectivityInternalPermission(); 3671 final long ident = Binder.clearCallingIdentity(); 3672 try { 3673 setProvNotificationVisible(visible, networkType, action); 3674 } finally { 3675 Binder.restoreCallingIdentity(ident); 3676 } 3677 } 3678 3679 @Override 3680 public void setAirplaneMode(boolean enable) { 3681 enforceConnectivityInternalPermission(); 3682 final long ident = Binder.clearCallingIdentity(); 3683 try { 3684 final ContentResolver cr = mContext.getContentResolver(); 3685 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3686 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3687 intent.putExtra("state", enable); 3688 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3689 } finally { 3690 Binder.restoreCallingIdentity(ident); 3691 } 3692 } 3693 3694 private void onUserStart(int userId) { 3695 synchronized(mVpns) { 3696 Vpn userVpn = mVpns.get(userId); 3697 if (userVpn != null) { 3698 loge("Starting user already has a VPN"); 3699 return; 3700 } 3701 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3702 mVpns.put(userId, userVpn); 3703 3704 final ContentResolver cr = mContext.getContentResolver(); 3705 String alwaysOnPackage = Settings.Secure.getStringForUser(cr, 3706 Settings.Secure.ALWAYS_ON_VPN_APP, userId); 3707 final boolean alwaysOnLockdown = Settings.Secure.getIntForUser(cr, 3708 Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN, /* default */ 0, userId) != 0; 3709 if (alwaysOnPackage != null) { 3710 userVpn.setAlwaysOnPackage(alwaysOnPackage, alwaysOnLockdown); 3711 } 3712 } 3713 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3714 updateLockdownVpn(); 3715 } 3716 } 3717 3718 private void onUserStop(int userId) { 3719 synchronized(mVpns) { 3720 Vpn userVpn = mVpns.get(userId); 3721 if (userVpn == null) { 3722 loge("Stopped user has no VPN"); 3723 return; 3724 } 3725 userVpn.onUserStopped(); 3726 mVpns.delete(userId); 3727 } 3728 } 3729 3730 private void onUserAdded(int userId) { 3731 synchronized(mVpns) { 3732 final int vpnsSize = mVpns.size(); 3733 for (int i = 0; i < vpnsSize; i++) { 3734 Vpn vpn = mVpns.valueAt(i); 3735 vpn.onUserAdded(userId); 3736 } 3737 } 3738 } 3739 3740 private void onUserRemoved(int userId) { 3741 synchronized(mVpns) { 3742 final int vpnsSize = mVpns.size(); 3743 for (int i = 0; i < vpnsSize; i++) { 3744 Vpn vpn = mVpns.valueAt(i); 3745 vpn.onUserRemoved(userId); 3746 } 3747 } 3748 } 3749 3750 private void onUserUnlocked(int userId) { 3751 // User present may be sent because of an unlock, which might mean an unlocked keystore. 3752 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3753 updateLockdownVpn(); 3754 } else { 3755 startAlwaysOnVpn(userId); 3756 } 3757 } 3758 3759 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3760 @Override 3761 public void onReceive(Context context, Intent intent) { 3762 final String action = intent.getAction(); 3763 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3764 if (userId == UserHandle.USER_NULL) return; 3765 3766 if (Intent.ACTION_USER_STARTED.equals(action)) { 3767 onUserStart(userId); 3768 } else if (Intent.ACTION_USER_STOPPED.equals(action)) { 3769 onUserStop(userId); 3770 } else if (Intent.ACTION_USER_ADDED.equals(action)) { 3771 onUserAdded(userId); 3772 } else if (Intent.ACTION_USER_REMOVED.equals(action)) { 3773 onUserRemoved(userId); 3774 } else if (Intent.ACTION_USER_UNLOCKED.equals(action)) { 3775 onUserUnlocked(userId); 3776 } 3777 } 3778 }; 3779 3780 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3781 new HashMap<Messenger, NetworkFactoryInfo>(); 3782 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3783 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3784 3785 private static final int MAX_NETWORK_REQUESTS_PER_UID = 100; 3786 // Map from UID to number of NetworkRequests that UID has filed. 3787 @GuardedBy("mUidToNetworkRequestCount") 3788 private final SparseIntArray mUidToNetworkRequestCount = new SparseIntArray(); 3789 3790 private static class NetworkFactoryInfo { 3791 public final String name; 3792 public final Messenger messenger; 3793 public final AsyncChannel asyncChannel; 3794 3795 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3796 this.name = name; 3797 this.messenger = messenger; 3798 this.asyncChannel = asyncChannel; 3799 } 3800 } 3801 3802 /** 3803 * A NetworkRequest as registered by an application can be one of three 3804 * types: 3805 * 3806 * - "listen", for which the framework will issue callbacks about any 3807 * and all networks that match the specified NetworkCapabilities, 3808 * 3809 * - "request", capable of causing a specific network to be created 3810 * first (e.g. a telephony DUN request), the framework will issue 3811 * callbacks about the single, highest scoring current network 3812 * (if any) that matches the specified NetworkCapabilities, or 3813 * 3814 * - "track the default network", a hybrid of the two designed such 3815 * that the framework will issue callbacks for the single, highest 3816 * scoring current network (if any) that matches the capabilities of 3817 * the default Internet request (mDefaultRequest), but which cannot 3818 * cause the framework to either create or retain the existence of 3819 * any specific network. 3820 * 3821 */ 3822 private static enum NetworkRequestType { 3823 LISTEN, 3824 TRACK_DEFAULT, 3825 REQUEST 3826 }; 3827 3828 /** 3829 * Tracks info about the requester. 3830 * Also used to notice when the calling process dies so we can self-expire 3831 */ 3832 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3833 final NetworkRequest request; 3834 final PendingIntent mPendingIntent; 3835 boolean mPendingIntentSent; 3836 private final IBinder mBinder; 3837 final int mPid; 3838 final int mUid; 3839 final Messenger messenger; 3840 private final NetworkRequestType mType; 3841 3842 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, NetworkRequestType type) { 3843 request = r; 3844 mPendingIntent = pi; 3845 messenger = null; 3846 mBinder = null; 3847 mPid = getCallingPid(); 3848 mUid = getCallingUid(); 3849 mType = type; 3850 enforceRequestCountLimit(); 3851 } 3852 3853 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, NetworkRequestType type) { 3854 super(); 3855 messenger = m; 3856 request = r; 3857 mBinder = binder; 3858 mPid = getCallingPid(); 3859 mUid = getCallingUid(); 3860 mType = type; 3861 mPendingIntent = null; 3862 enforceRequestCountLimit(); 3863 3864 try { 3865 mBinder.linkToDeath(this, 0); 3866 } catch (RemoteException e) { 3867 binderDied(); 3868 } 3869 } 3870 3871 private void enforceRequestCountLimit() { 3872 synchronized (mUidToNetworkRequestCount) { 3873 int networkRequests = mUidToNetworkRequestCount.get(mUid, 0) + 1; 3874 if (networkRequests >= MAX_NETWORK_REQUESTS_PER_UID) { 3875 throw new IllegalArgumentException("Too many NetworkRequests filed"); 3876 } 3877 mUidToNetworkRequestCount.put(mUid, networkRequests); 3878 } 3879 } 3880 3881 private String typeString() { 3882 switch (mType) { 3883 case LISTEN: return "Listen"; 3884 case REQUEST: return "Request"; 3885 case TRACK_DEFAULT: return "Track default"; 3886 default: 3887 return "unknown type"; 3888 } 3889 } 3890 3891 void unlinkDeathRecipient() { 3892 if (mBinder != null) { 3893 mBinder.unlinkToDeath(this, 0); 3894 } 3895 } 3896 3897 public void binderDied() { 3898 log("ConnectivityService NetworkRequestInfo binderDied(" + 3899 request + ", " + mBinder + ")"); 3900 releaseNetworkRequest(request); 3901 } 3902 3903 /** 3904 * Returns true iff. the contained NetworkRequest is one that: 3905 * 3906 * - should be associated with at most one satisfying network 3907 * at a time; 3908 * 3909 * - should cause a network to be kept up if it is the only network 3910 * which can satisfy the NetworkReqeust. 3911 * 3912 * For full detail of how isRequest() is used for pairing Networks with 3913 * NetworkRequests read rematchNetworkAndRequests(). 3914 * 3915 * TODO: Rename to something more properly descriptive. 3916 */ 3917 public boolean isRequest() { 3918 return (mType == NetworkRequestType.TRACK_DEFAULT) || 3919 (mType == NetworkRequestType.REQUEST); 3920 } 3921 3922 public String toString() { 3923 return typeString() + 3924 " from uid/pid:" + mUid + "/" + mPid + 3925 " for " + request + 3926 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3927 } 3928 } 3929 3930 private void ensureRequestableCapabilities(NetworkCapabilities networkCapabilities) { 3931 final String badCapability = networkCapabilities.describeFirstNonRequestableCapability(); 3932 if (badCapability != null) { 3933 throw new IllegalArgumentException("Cannot request network with " + badCapability); 3934 } 3935 } 3936 3937 private ArrayList<Integer> getSignalStrengthThresholds(NetworkAgentInfo nai) { 3938 final SortedSet<Integer> thresholds = new TreeSet(); 3939 synchronized (nai) { 3940 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3941 if (nri.request.networkCapabilities.hasSignalStrength() && 3942 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 3943 thresholds.add(nri.request.networkCapabilities.getSignalStrength()); 3944 } 3945 } 3946 } 3947 return new ArrayList<Integer>(thresholds); 3948 } 3949 3950 private void updateSignalStrengthThresholds( 3951 NetworkAgentInfo nai, String reason, NetworkRequest request) { 3952 ArrayList<Integer> thresholdsArray = getSignalStrengthThresholds(nai); 3953 Bundle thresholds = new Bundle(); 3954 thresholds.putIntegerArrayList("thresholds", thresholdsArray); 3955 3956 if (VDBG || (DBG && !"CONNECT".equals(reason))) { 3957 String detail; 3958 if (request != null && request.networkCapabilities.hasSignalStrength()) { 3959 detail = reason + " " + request.networkCapabilities.getSignalStrength(); 3960 } else { 3961 detail = reason; 3962 } 3963 log(String.format("updateSignalStrengthThresholds: %s, sending %s to %s", 3964 detail, Arrays.toString(thresholdsArray.toArray()), nai.name())); 3965 } 3966 3967 nai.asyncChannel.sendMessage( 3968 android.net.NetworkAgent.CMD_SET_SIGNAL_STRENGTH_THRESHOLDS, 3969 0, 0, thresholds); 3970 } 3971 3972 @Override 3973 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3974 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3975 final NetworkRequestType type = (networkCapabilities == null) 3976 ? NetworkRequestType.TRACK_DEFAULT 3977 : NetworkRequestType.REQUEST; 3978 // If the requested networkCapabilities is null, take them instead from 3979 // the default network request. This allows callers to keep track of 3980 // the system default network. 3981 if (type == NetworkRequestType.TRACK_DEFAULT) { 3982 networkCapabilities = new NetworkCapabilities(mDefaultRequest.networkCapabilities); 3983 enforceAccessPermission(); 3984 } else { 3985 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3986 enforceNetworkRequestPermissions(networkCapabilities); 3987 } 3988 enforceMeteredApnPolicy(networkCapabilities); 3989 ensureRequestableCapabilities(networkCapabilities); 3990 3991 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3992 throw new IllegalArgumentException("Bad timeout specified"); 3993 } 3994 3995 if (NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER 3996 .equals(networkCapabilities.getNetworkSpecifier())) { 3997 throw new IllegalArgumentException("Invalid network specifier - must not be '" 3998 + NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER + "'"); 3999 } 4000 4001 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 4002 nextNetworkRequestId()); 4003 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, type); 4004 if (DBG) log("requestNetwork for " + nri); 4005 4006 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 4007 if (timeoutMs > 0) { 4008 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 4009 nri), timeoutMs); 4010 } 4011 return networkRequest; 4012 } 4013 4014 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 4015 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 4016 enforceConnectivityInternalPermission(); 4017 } else { 4018 enforceChangePermission(); 4019 } 4020 } 4021 4022 @Override 4023 public boolean requestBandwidthUpdate(Network network) { 4024 enforceAccessPermission(); 4025 NetworkAgentInfo nai = null; 4026 if (network == null) { 4027 return false; 4028 } 4029 synchronized (mNetworkForNetId) { 4030 nai = mNetworkForNetId.get(network.netId); 4031 } 4032 if (nai != null) { 4033 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 4034 return true; 4035 } 4036 return false; 4037 } 4038 4039 4040 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 4041 // if UID is restricted, don't allow them to bring up metered APNs 4042 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 4043 final int uidRules; 4044 final int uid = Binder.getCallingUid(); 4045 synchronized(mRulesLock) { 4046 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 4047 } 4048 if (mRestrictBackground && (uidRules & RULE_ALLOW_METERED) == 0 4049 && (uidRules & RULE_TEMPORARY_ALLOW_METERED) == 0) { 4050 // we could silently fail or we can filter the available nets to only give 4051 // them those they have access to. Chose the more useful option. 4052 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 4053 } 4054 } 4055 } 4056 4057 @Override 4058 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 4059 PendingIntent operation) { 4060 checkNotNull(operation, "PendingIntent cannot be null."); 4061 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4062 enforceNetworkRequestPermissions(networkCapabilities); 4063 enforceMeteredApnPolicy(networkCapabilities); 4064 ensureRequestableCapabilities(networkCapabilities); 4065 4066 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 4067 nextNetworkRequestId()); 4068 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 4069 NetworkRequestType.REQUEST); 4070 if (DBG) log("pendingRequest for " + nri); 4071 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 4072 nri)); 4073 return networkRequest; 4074 } 4075 4076 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 4077 mHandler.sendMessageDelayed( 4078 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 4079 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 4080 } 4081 4082 @Override 4083 public void releasePendingNetworkRequest(PendingIntent operation) { 4084 checkNotNull(operation, "PendingIntent cannot be null."); 4085 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 4086 getCallingUid(), 0, operation)); 4087 } 4088 4089 // In order to implement the compatibility measure for pre-M apps that call 4090 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 4091 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 4092 // This ensures it has permission to do so. 4093 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 4094 if (nc == null) { 4095 return false; 4096 } 4097 int[] transportTypes = nc.getTransportTypes(); 4098 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 4099 return false; 4100 } 4101 try { 4102 mContext.enforceCallingOrSelfPermission( 4103 android.Manifest.permission.ACCESS_WIFI_STATE, 4104 "ConnectivityService"); 4105 } catch (SecurityException e) { 4106 return false; 4107 } 4108 return true; 4109 } 4110 4111 @Override 4112 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 4113 Messenger messenger, IBinder binder) { 4114 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 4115 enforceAccessPermission(); 4116 } 4117 4118 NetworkRequest networkRequest = new NetworkRequest( 4119 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 4120 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 4121 NetworkRequestType.LISTEN); 4122 if (VDBG) log("listenForNetwork for " + nri); 4123 4124 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4125 return networkRequest; 4126 } 4127 4128 @Override 4129 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 4130 PendingIntent operation) { 4131 checkNotNull(operation, "PendingIntent cannot be null."); 4132 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 4133 enforceAccessPermission(); 4134 } 4135 4136 NetworkRequest networkRequest = new NetworkRequest( 4137 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 4138 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 4139 NetworkRequestType.LISTEN); 4140 if (VDBG) log("pendingListenForNetwork for " + nri); 4141 4142 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4143 } 4144 4145 @Override 4146 public void releaseNetworkRequest(NetworkRequest networkRequest) { 4147 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 4148 0, networkRequest)); 4149 } 4150 4151 @Override 4152 public void registerNetworkFactory(Messenger messenger, String name) { 4153 enforceConnectivityInternalPermission(); 4154 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 4155 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 4156 } 4157 4158 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 4159 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 4160 mNetworkFactoryInfos.put(nfi.messenger, nfi); 4161 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 4162 } 4163 4164 @Override 4165 public void unregisterNetworkFactory(Messenger messenger) { 4166 enforceConnectivityInternalPermission(); 4167 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 4168 } 4169 4170 private void handleUnregisterNetworkFactory(Messenger messenger) { 4171 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 4172 if (nfi == null) { 4173 loge("Failed to find Messenger in unregisterNetworkFactory"); 4174 return; 4175 } 4176 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 4177 } 4178 4179 /** 4180 * NetworkAgentInfo supporting a request by requestId. 4181 * These have already been vetted (their Capabilities satisfy the request) 4182 * and the are the highest scored network available. 4183 * the are keyed off the Requests requestId. 4184 */ 4185 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 4186 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 4187 new SparseArray<NetworkAgentInfo>(); 4188 4189 // NOTE: Accessed on multiple threads, must be synchronized on itself. 4190 @GuardedBy("mNetworkForNetId") 4191 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 4192 new SparseArray<NetworkAgentInfo>(); 4193 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 4194 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 4195 // there may not be a strict 1:1 correlation between the two. 4196 @GuardedBy("mNetworkForNetId") 4197 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 4198 4199 // NetworkAgentInfo keyed off its connecting messenger 4200 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 4201 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 4202 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 4203 new HashMap<Messenger, NetworkAgentInfo>(); 4204 4205 @GuardedBy("mBlockedAppUids") 4206 private final HashSet<Integer> mBlockedAppUids = new HashSet(); 4207 4208 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 4209 private final NetworkRequest mDefaultRequest; 4210 4211 // Request used to optionally keep mobile data active even when higher 4212 // priority networks like Wi-Fi are active. 4213 private final NetworkRequest mDefaultMobileDataRequest; 4214 4215 private NetworkAgentInfo getDefaultNetwork() { 4216 return mNetworkForRequestId.get(mDefaultRequest.requestId); 4217 } 4218 4219 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 4220 return nai == getDefaultNetwork(); 4221 } 4222 4223 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 4224 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 4225 int currentScore, NetworkMisc networkMisc) { 4226 enforceConnectivityInternalPermission(); 4227 4228 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 4229 // satisfies mDefaultRequest. 4230 final NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 4231 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 4232 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 4233 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest, this); 4234 synchronized (this) { 4235 nai.networkMonitor.systemReady = mSystemReady; 4236 } 4237 addValidationLogs(nai.networkMonitor.getValidationLogs(), nai.network, 4238 networkInfo.getExtraInfo()); 4239 if (DBG) log("registerNetworkAgent " + nai); 4240 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 4241 return nai.network.netId; 4242 } 4243 4244 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 4245 if (VDBG) log("Got NetworkAgent Messenger"); 4246 mNetworkAgentInfos.put(na.messenger, na); 4247 synchronized (mNetworkForNetId) { 4248 mNetworkForNetId.put(na.network.netId, na); 4249 } 4250 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 4251 NetworkInfo networkInfo = na.networkInfo; 4252 na.networkInfo = null; 4253 updateNetworkInfo(na, networkInfo); 4254 } 4255 4256 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 4257 LinkProperties newLp = networkAgent.linkProperties; 4258 int netId = networkAgent.network.netId; 4259 4260 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 4261 // we do anything else, make sure its LinkProperties are accurate. 4262 if (networkAgent.clatd != null) { 4263 networkAgent.clatd.fixupLinkProperties(oldLp); 4264 } 4265 4266 updateInterfaces(newLp, oldLp, netId); 4267 updateMtu(newLp, oldLp); 4268 // TODO - figure out what to do for clat 4269// for (LinkProperties lp : newLp.getStackedLinks()) { 4270// updateMtu(lp, null); 4271// } 4272 updateTcpBufferSizes(networkAgent); 4273 4274 updateRoutes(newLp, oldLp, netId); 4275 updateDnses(newLp, oldLp, netId); 4276 4277 updateClat(newLp, oldLp, networkAgent); 4278 if (isDefaultNetwork(networkAgent)) { 4279 handleApplyDefaultProxy(newLp.getHttpProxy()); 4280 } else { 4281 updateProxy(newLp, oldLp, networkAgent); 4282 } 4283 // TODO - move this check to cover the whole function 4284 if (!Objects.equals(newLp, oldLp)) { 4285 notifyIfacesChangedForNetworkStats(); 4286 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 4287 } 4288 4289 mKeepaliveTracker.handleCheckKeepalivesStillValid(networkAgent); 4290 } 4291 4292 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 4293 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 4294 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 4295 4296 if (!wasRunningClat && shouldRunClat) { 4297 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 4298 nai.clatd.start(); 4299 } else if (wasRunningClat && !shouldRunClat) { 4300 nai.clatd.stop(); 4301 } 4302 } 4303 4304 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 4305 CompareResult<String> interfaceDiff = new CompareResult<String>(); 4306 if (oldLp != null) { 4307 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 4308 } else if (newLp != null) { 4309 interfaceDiff.added = newLp.getAllInterfaceNames(); 4310 } 4311 for (String iface : interfaceDiff.added) { 4312 try { 4313 if (DBG) log("Adding iface " + iface + " to network " + netId); 4314 mNetd.addInterfaceToNetwork(iface, netId); 4315 } catch (Exception e) { 4316 loge("Exception adding interface: " + e); 4317 } 4318 } 4319 for (String iface : interfaceDiff.removed) { 4320 try { 4321 if (DBG) log("Removing iface " + iface + " from network " + netId); 4322 mNetd.removeInterfaceFromNetwork(iface, netId); 4323 } catch (Exception e) { 4324 loge("Exception removing interface: " + e); 4325 } 4326 } 4327 } 4328 4329 /** 4330 * Have netd update routes from oldLp to newLp. 4331 * @return true if routes changed between oldLp and newLp 4332 */ 4333 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 4334 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 4335 if (oldLp != null) { 4336 routeDiff = oldLp.compareAllRoutes(newLp); 4337 } else if (newLp != null) { 4338 routeDiff.added = newLp.getAllRoutes(); 4339 } 4340 4341 // add routes before removing old in case it helps with continuous connectivity 4342 4343 // do this twice, adding non-nexthop routes first, then routes they are dependent on 4344 for (RouteInfo route : routeDiff.added) { 4345 if (route.hasGateway()) continue; 4346 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4347 try { 4348 mNetd.addRoute(netId, route); 4349 } catch (Exception e) { 4350 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 4351 loge("Exception in addRoute for non-gateway: " + e); 4352 } 4353 } 4354 } 4355 for (RouteInfo route : routeDiff.added) { 4356 if (route.hasGateway() == false) continue; 4357 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4358 try { 4359 mNetd.addRoute(netId, route); 4360 } catch (Exception e) { 4361 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4362 loge("Exception in addRoute for gateway: " + e); 4363 } 4364 } 4365 } 4366 4367 for (RouteInfo route : routeDiff.removed) { 4368 if (VDBG) log("Removing Route [" + route + "] from network " + netId); 4369 try { 4370 mNetd.removeRoute(netId, route); 4371 } catch (Exception e) { 4372 loge("Exception in removeRoute: " + e); 4373 } 4374 } 4375 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4376 } 4377 4378 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId) { 4379 if (oldLp != null && newLp.isIdenticalDnses(oldLp)) { 4380 return; // no updating necessary 4381 } 4382 4383 Collection<InetAddress> dnses = newLp.getDnsServers(); 4384 if (DBG) log("Setting DNS servers for network " + netId + " to " + dnses); 4385 try { 4386 mNetd.setDnsConfigurationForNetwork( 4387 netId, NetworkUtils.makeStrings(dnses), newLp.getDomains()); 4388 } catch (Exception e) { 4389 loge("Exception in setDnsConfigurationForNetwork: " + e); 4390 } 4391 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 4392 if (defaultNai != null && defaultNai.network.netId == netId) { 4393 setDefaultDnsSystemProperties(dnses); 4394 } 4395 flushVmDnsCache(); 4396 } 4397 4398 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4399 int last = 0; 4400 for (InetAddress dns : dnses) { 4401 ++last; 4402 String key = "net.dns" + last; 4403 String value = dns.getHostAddress(); 4404 SystemProperties.set(key, value); 4405 } 4406 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4407 String key = "net.dns" + i; 4408 SystemProperties.set(key, ""); 4409 } 4410 mNumDnsEntries = last; 4411 } 4412 4413 /** 4414 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 4415 * augmented with any stateful capabilities implied from {@code networkAgent} 4416 * (e.g., validated status and captive portal status). 4417 * 4418 * @param nai the network having its capabilities updated. 4419 * @param networkCapabilities the new network capabilities. 4420 */ 4421 private void updateCapabilities(NetworkAgentInfo nai, NetworkCapabilities networkCapabilities) { 4422 // Don't modify caller's NetworkCapabilities. 4423 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4424 if (nai.lastValidated) { 4425 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4426 } else { 4427 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4428 } 4429 if (nai.lastCaptivePortalDetected) { 4430 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4431 } else { 4432 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4433 } 4434 if (!Objects.equals(nai.networkCapabilities, networkCapabilities)) { 4435 final int oldScore = nai.getCurrentScore(); 4436 if (nai.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) != 4437 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED)) { 4438 try { 4439 mNetd.setNetworkPermission(nai.network.netId, 4440 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) ? 4441 null : NetworkManagementService.PERMISSION_SYSTEM); 4442 } catch (RemoteException e) { 4443 loge("Exception in setNetworkPermission: " + e); 4444 } 4445 } 4446 synchronized (nai) { 4447 nai.networkCapabilities = networkCapabilities; 4448 } 4449 rematchAllNetworksAndRequests(nai, oldScore); 4450 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 4451 } 4452 } 4453 4454 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4455 for (int i = 0; i < nai.networkRequests.size(); i++) { 4456 NetworkRequest nr = nai.networkRequests.valueAt(i); 4457 // Don't send listening requests to factories. b/17393458 4458 if (!isRequest(nr)) continue; 4459 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4460 } 4461 } 4462 4463 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4464 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4465 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4466 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4467 networkRequest); 4468 } 4469 } 4470 4471 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4472 int notificationType) { 4473 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4474 Intent intent = new Intent(); 4475 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4476 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4477 nri.mPendingIntentSent = true; 4478 sendIntent(nri.mPendingIntent, intent); 4479 } 4480 // else not handled 4481 } 4482 4483 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4484 mPendingIntentWakeLock.acquire(); 4485 try { 4486 if (DBG) log("Sending " + pendingIntent); 4487 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4488 } catch (PendingIntent.CanceledException e) { 4489 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4490 mPendingIntentWakeLock.release(); 4491 releasePendingNetworkRequest(pendingIntent); 4492 } 4493 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4494 } 4495 4496 @Override 4497 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4498 String resultData, Bundle resultExtras) { 4499 if (DBG) log("Finished sending " + pendingIntent); 4500 mPendingIntentWakeLock.release(); 4501 // Release with a delay so the receiving client has an opportunity to put in its 4502 // own request. 4503 releasePendingNetworkRequestWithDelay(pendingIntent); 4504 } 4505 4506 private void callCallbackForRequest(NetworkRequestInfo nri, 4507 NetworkAgentInfo networkAgent, int notificationType) { 4508 if (nri.messenger == null) return; // Default request has no msgr 4509 Bundle bundle = new Bundle(); 4510 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4511 new NetworkRequest(nri.request)); 4512 Message msg = Message.obtain(); 4513 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4514 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4515 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4516 } 4517 switch (notificationType) { 4518 case ConnectivityManager.CALLBACK_LOSING: { 4519 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4520 break; 4521 } 4522 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4523 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4524 new NetworkCapabilities(networkAgent.networkCapabilities)); 4525 break; 4526 } 4527 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4528 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4529 new LinkProperties(networkAgent.linkProperties)); 4530 break; 4531 } 4532 } 4533 msg.what = notificationType; 4534 msg.setData(bundle); 4535 try { 4536 if (VDBG) { 4537 log("sending notification " + notifyTypeToName(notificationType) + 4538 " for " + nri.request); 4539 } 4540 nri.messenger.send(msg); 4541 } catch (RemoteException e) { 4542 // may occur naturally in the race of binder death. 4543 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4544 } 4545 } 4546 4547 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4548 for (int i = 0; i < nai.networkRequests.size(); i++) { 4549 NetworkRequest nr = nai.networkRequests.valueAt(i); 4550 // Ignore listening requests. 4551 if (!isRequest(nr)) continue; 4552 loge("Dead network still had at least " + nr); 4553 break; 4554 } 4555 nai.asyncChannel.disconnect(); 4556 } 4557 4558 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4559 if (oldNetwork == null) { 4560 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4561 return; 4562 } 4563 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4564 teardownUnneededNetwork(oldNetwork); 4565 } 4566 4567 private void makeDefault(NetworkAgentInfo newNetwork) { 4568 if (DBG) log("Switching to new default network: " + newNetwork); 4569 setupDataActivityTracking(newNetwork); 4570 try { 4571 mNetd.setDefaultNetId(newNetwork.network.netId); 4572 } catch (Exception e) { 4573 loge("Exception setting default network :" + e); 4574 } 4575 notifyLockdownVpn(newNetwork); 4576 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4577 updateTcpBufferSizes(newNetwork); 4578 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4579 } 4580 4581 // Handles a network appearing or improving its score. 4582 // 4583 // - Evaluates all current NetworkRequests that can be 4584 // satisfied by newNetwork, and reassigns to newNetwork 4585 // any such requests for which newNetwork is the best. 4586 // 4587 // - Lingers any validated Networks that as a result are no longer 4588 // needed. A network is needed if it is the best network for 4589 // one or more NetworkRequests, or if it is a VPN. 4590 // 4591 // - Tears down newNetwork if it just became validated 4592 // but turns out to be unneeded. 4593 // 4594 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4595 // networks that have no chance (i.e. even if validated) 4596 // of becoming the highest scoring network. 4597 // 4598 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4599 // it does not remove NetworkRequests that other Networks could better satisfy. 4600 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4601 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4602 // as it performs better by a factor of the number of Networks. 4603 // 4604 // @param newNetwork is the network to be matched against NetworkRequests. 4605 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4606 // performed to tear down unvalidated networks that have no chance (i.e. even if 4607 // validated) of becoming the highest scoring network. 4608 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, 4609 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4610 if (!newNetwork.everConnected) return; 4611 boolean keep = newNetwork.isVPN(); 4612 boolean isNewDefault = false; 4613 NetworkAgentInfo oldDefaultNetwork = null; 4614 if (VDBG) log("rematching " + newNetwork.name()); 4615 // Find and migrate to this Network any NetworkRequests for 4616 // which this network is now the best. 4617 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4618 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4619 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4620 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4621 final NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4622 final boolean satisfies = newNetwork.satisfies(nri.request); 4623 if (newNetwork == currentNetwork && satisfies) { 4624 if (VDBG) { 4625 log("Network " + newNetwork.name() + " was already satisfying" + 4626 " request " + nri.request.requestId + ". No change."); 4627 } 4628 keep = true; 4629 continue; 4630 } 4631 4632 // check if it satisfies the NetworkCapabilities 4633 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4634 if (satisfies) { 4635 if (!nri.isRequest()) { 4636 // This is not a request, it's a callback listener. 4637 // Add it to newNetwork regardless of score. 4638 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4639 continue; 4640 } 4641 4642 // next check if it's better than any current network we're using for 4643 // this request 4644 if (VDBG) { 4645 log("currentScore = " + 4646 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4647 ", newScore = " + newNetwork.getCurrentScore()); 4648 } 4649 if (currentNetwork == null || 4650 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4651 if (VDBG) log("rematch for " + newNetwork.name()); 4652 if (currentNetwork != null) { 4653 if (VDBG) log(" accepting network in place of " + currentNetwork.name()); 4654 currentNetwork.networkRequests.remove(nri.request.requestId); 4655 currentNetwork.networkLingered.add(nri.request); 4656 affectedNetworks.add(currentNetwork); 4657 } else { 4658 if (VDBG) log(" accepting network in place of null"); 4659 } 4660 unlinger(newNetwork); 4661 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4662 if (!newNetwork.addRequest(nri.request)) { 4663 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4664 } 4665 addedRequests.add(nri); 4666 keep = true; 4667 // Tell NetworkFactories about the new score, so they can stop 4668 // trying to connect if they know they cannot match it. 4669 // TODO - this could get expensive if we have alot of requests for this 4670 // network. Think about if there is a way to reduce this. Push 4671 // netid->request mapping to each factory? 4672 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4673 if (mDefaultRequest.requestId == nri.request.requestId) { 4674 isNewDefault = true; 4675 oldDefaultNetwork = currentNetwork; 4676 } 4677 } 4678 } else if (newNetwork.networkRequests.get(nri.request.requestId) != null) { 4679 // If "newNetwork" is listed as satisfying "nri" but no longer satisfies "nri", 4680 // mark it as no longer satisfying "nri". Because networks are processed by 4681 // rematchAllNetworkAndRequests() in descending score order, "currentNetwork" will 4682 // match "newNetwork" before this loop will encounter a "currentNetwork" with higher 4683 // score than "newNetwork" and where "currentNetwork" no longer satisfies "nri". 4684 // This means this code doesn't have to handle the case where "currentNetwork" no 4685 // longer satisfies "nri" when "currentNetwork" does not equal "newNetwork". 4686 if (DBG) { 4687 log("Network " + newNetwork.name() + " stopped satisfying" + 4688 " request " + nri.request.requestId); 4689 } 4690 newNetwork.networkRequests.remove(nri.request.requestId); 4691 if (currentNetwork == newNetwork) { 4692 mNetworkForRequestId.remove(nri.request.requestId); 4693 sendUpdatedScoreToFactories(nri.request, 0); 4694 } else { 4695 if (nri.isRequest()) { 4696 Slog.wtf(TAG, "BUG: Removing request " + nri.request.requestId + " from " + 4697 newNetwork.name() + 4698 " without updating mNetworkForRequestId or factories!"); 4699 } 4700 } 4701 // TODO: technically, sending CALLBACK_LOST here is 4702 // incorrect if nri is a request (not a listen) and there 4703 // is a replacement network currently connected that can 4704 // satisfy it. However, the only capability that can both 4705 // a) be requested and b) change is NET_CAPABILITY_TRUSTED, 4706 // so this code is only incorrect for a network that loses 4707 // the TRUSTED capability, which is a rare case. 4708 callCallbackForRequest(nri, newNetwork, ConnectivityManager.CALLBACK_LOST); 4709 } 4710 } 4711 // Linger any networks that are no longer needed. 4712 for (NetworkAgentInfo nai : affectedNetworks) { 4713 if (nai.lingering) { 4714 // Already lingered. Nothing to do. This can only happen if "nai" is in 4715 // "affectedNetworks" twice. The reasoning being that to get added to 4716 // "affectedNetworks", "nai" must have been satisfying a NetworkRequest 4717 // (i.e. not lingered) so it could have only been lingered by this loop. 4718 // unneeded(nai) will be false and we'll call unlinger() below which would 4719 // be bad, so handle it here. 4720 } else if (unneeded(nai)) { 4721 linger(nai); 4722 } else { 4723 // Clear nai.networkLingered we might have added above. 4724 unlinger(nai); 4725 } 4726 } 4727 if (isNewDefault) { 4728 // Notify system services that this network is up. 4729 makeDefault(newNetwork); 4730 // Log 0 -> X and Y -> X default network transitions, where X is the new default. 4731 logDefaultNetworkEvent(newNetwork, oldDefaultNetwork); 4732 synchronized (ConnectivityService.this) { 4733 // have a new default network, release the transition wakelock in 4734 // a second if it's held. The second pause is to allow apps 4735 // to reconnect over the new network 4736 if (mNetTransitionWakeLock.isHeld()) { 4737 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4738 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4739 mNetTransitionWakeLockSerialNumber, 0), 4740 1000); 4741 } 4742 } 4743 } 4744 4745 // do this after the default net is switched, but 4746 // before LegacyTypeTracker sends legacy broadcasts 4747 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4748 4749 if (isNewDefault) { 4750 // Maintain the illusion: since the legacy API only 4751 // understands one network at a time, we must pretend 4752 // that the current default network disconnected before 4753 // the new one connected. 4754 if (oldDefaultNetwork != null) { 4755 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4756 oldDefaultNetwork, true); 4757 } 4758 mDefaultInetConditionPublished = newNetwork.lastValidated ? 100 : 0; 4759 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4760 notifyLockdownVpn(newNetwork); 4761 } 4762 4763 if (keep) { 4764 // Notify battery stats service about this network, both the normal 4765 // interface and any stacked links. 4766 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4767 try { 4768 final IBatteryStats bs = BatteryStatsService.getService(); 4769 final int type = newNetwork.networkInfo.getType(); 4770 4771 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4772 bs.noteNetworkInterfaceType(baseIface, type); 4773 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4774 final String stackedIface = stacked.getInterfaceName(); 4775 bs.noteNetworkInterfaceType(stackedIface, type); 4776 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4777 } 4778 } catch (RemoteException ignored) { 4779 } 4780 4781 // This has to happen after the notifyNetworkCallbacks as that tickles each 4782 // ConnectivityManager instance so that legacy requests correctly bind dns 4783 // requests to this network. The legacy users are listening for this bcast 4784 // and will generally do a dns request so they can ensureRouteToHost and if 4785 // they do that before the callbacks happen they'll use the default network. 4786 // 4787 // TODO: Is there still a race here? We send the broadcast 4788 // after sending the callback, but if the app can receive the 4789 // broadcast before the callback, it might still break. 4790 // 4791 // This *does* introduce a race where if the user uses the new api 4792 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4793 // they may get old info. Reverse this after the old startUsing api is removed. 4794 // This is on top of the multiple intent sequencing referenced in the todo above. 4795 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4796 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4797 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4798 // legacy type tracker filters out repeat adds 4799 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4800 } 4801 } 4802 4803 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4804 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4805 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4806 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4807 if (newNetwork.isVPN()) { 4808 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4809 } 4810 } 4811 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4812 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4813 if (unneeded(nai)) { 4814 if (DBG) log("Reaping " + nai.name()); 4815 teardownUnneededNetwork(nai); 4816 } 4817 } 4818 } 4819 } 4820 4821 /** 4822 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4823 * being disconnected. 4824 * @param changed If only one Network's score or capabilities have been modified since the last 4825 * time this function was called, pass this Network in this argument, otherwise pass 4826 * null. 4827 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4828 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4829 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4830 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4831 * network's score. 4832 */ 4833 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4834 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4835 // to avoid the slowness. It is not simply enough to process just "changed", for 4836 // example in the case where "changed"'s score decreases and another network should begin 4837 // satifying a NetworkRequest that "changed" currently satisfies. 4838 4839 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4840 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4841 // rematchNetworkAndRequests() handles. 4842 if (changed != null && oldScore < changed.getCurrentScore()) { 4843 rematchNetworkAndRequests(changed, ReapUnvalidatedNetworks.REAP); 4844 } else { 4845 final NetworkAgentInfo[] nais = mNetworkAgentInfos.values().toArray( 4846 new NetworkAgentInfo[mNetworkAgentInfos.size()]); 4847 // Rematch higher scoring networks first to prevent requests first matching a lower 4848 // scoring network and then a higher scoring network, which could produce multiple 4849 // callbacks and inadvertently unlinger networks. 4850 Arrays.sort(nais); 4851 for (NetworkAgentInfo nai : nais) { 4852 rematchNetworkAndRequests(nai, 4853 // Only reap the last time through the loop. Reaping before all rematching 4854 // is complete could incorrectly teardown a network that hasn't yet been 4855 // rematched. 4856 (nai != nais[nais.length-1]) ? ReapUnvalidatedNetworks.DONT_REAP 4857 : ReapUnvalidatedNetworks.REAP); 4858 } 4859 } 4860 } 4861 4862 private void updateInetCondition(NetworkAgentInfo nai) { 4863 // Don't bother updating until we've graduated to validated at least once. 4864 if (!nai.everValidated) return; 4865 // For now only update icons for default connection. 4866 // TODO: Update WiFi and cellular icons separately. b/17237507 4867 if (!isDefaultNetwork(nai)) return; 4868 4869 int newInetCondition = nai.lastValidated ? 100 : 0; 4870 // Don't repeat publish. 4871 if (newInetCondition == mDefaultInetConditionPublished) return; 4872 4873 mDefaultInetConditionPublished = newInetCondition; 4874 sendInetConditionBroadcast(nai.networkInfo); 4875 } 4876 4877 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4878 if (mLockdownTracker != null) { 4879 if (nai != null && nai.isVPN()) { 4880 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4881 } else { 4882 mLockdownTracker.onNetworkInfoChanged(); 4883 } 4884 } 4885 } 4886 4887 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4888 NetworkInfo.State state = newInfo.getState(); 4889 NetworkInfo oldInfo = null; 4890 final int oldScore = networkAgent.getCurrentScore(); 4891 synchronized (networkAgent) { 4892 oldInfo = networkAgent.networkInfo; 4893 networkAgent.networkInfo = newInfo; 4894 } 4895 notifyLockdownVpn(networkAgent); 4896 4897 if (oldInfo != null && oldInfo.getState() == state) { 4898 if (oldInfo.isRoaming() != newInfo.isRoaming()) { 4899 if (VDBG) log("roaming status changed, notifying NetworkStatsService"); 4900 notifyIfacesChangedForNetworkStats(); 4901 } else if (VDBG) log("ignoring duplicate network state non-change"); 4902 // In either case, no further work should be needed. 4903 return; 4904 } 4905 if (DBG) { 4906 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4907 (oldInfo == null ? "null" : oldInfo.getState()) + 4908 " to " + state); 4909 } 4910 4911 if (!networkAgent.created 4912 && (state == NetworkInfo.State.CONNECTED 4913 || (state == NetworkInfo.State.CONNECTING && networkAgent.isVPN()))) { 4914 try { 4915 // This should never fail. Specifying an already in use NetID will cause failure. 4916 if (networkAgent.isVPN()) { 4917 mNetd.createVirtualNetwork(networkAgent.network.netId, 4918 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4919 (networkAgent.networkMisc == null || 4920 !networkAgent.networkMisc.allowBypass)); 4921 } else { 4922 mNetd.createPhysicalNetwork(networkAgent.network.netId, 4923 networkAgent.networkCapabilities.hasCapability( 4924 NET_CAPABILITY_NOT_RESTRICTED) ? 4925 null : NetworkManagementService.PERMISSION_SYSTEM); 4926 } 4927 } catch (Exception e) { 4928 loge("Error creating network " + networkAgent.network.netId + ": " 4929 + e.getMessage()); 4930 return; 4931 } 4932 networkAgent.created = true; 4933 } 4934 4935 if (!networkAgent.everConnected && state == NetworkInfo.State.CONNECTED) { 4936 networkAgent.everConnected = true; 4937 4938 updateLinkProperties(networkAgent, null); 4939 notifyIfacesChangedForNetworkStats(); 4940 4941 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4942 scheduleUnvalidatedPrompt(networkAgent); 4943 4944 if (networkAgent.isVPN()) { 4945 // Temporarily disable the default proxy (not global). 4946 synchronized (mProxyLock) { 4947 if (!mDefaultProxyDisabled) { 4948 mDefaultProxyDisabled = true; 4949 if (mGlobalProxy == null && mDefaultProxy != null) { 4950 sendProxyBroadcast(null); 4951 } 4952 } 4953 } 4954 // TODO: support proxy per network. 4955 } 4956 4957 // Whether a particular NetworkRequest listen should cause signal strength thresholds to 4958 // be communicated to a particular NetworkAgent depends only on the network's immutable, 4959 // capabilities, so it only needs to be done once on initial connect, not every time the 4960 // network's capabilities change. Note that we do this before rematching the network, 4961 // so we could decide to tear it down immediately afterwards. That's fine though - on 4962 // disconnection NetworkAgents should stop any signal strength monitoring they have been 4963 // doing. 4964 updateSignalStrengthThresholds(networkAgent, "CONNECT", null); 4965 4966 // Consider network even though it is not yet validated. 4967 rematchNetworkAndRequests(networkAgent, ReapUnvalidatedNetworks.REAP); 4968 4969 // This has to happen after matching the requests, because callbacks are just requests. 4970 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4971 } else if (state == NetworkInfo.State.DISCONNECTED) { 4972 networkAgent.asyncChannel.disconnect(); 4973 if (networkAgent.isVPN()) { 4974 synchronized (mProxyLock) { 4975 if (mDefaultProxyDisabled) { 4976 mDefaultProxyDisabled = false; 4977 if (mGlobalProxy == null && mDefaultProxy != null) { 4978 sendProxyBroadcast(mDefaultProxy); 4979 } 4980 } 4981 } 4982 } 4983 } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) || 4984 state == NetworkInfo.State.SUSPENDED) { 4985 // going into or coming out of SUSPEND: rescore and notify 4986 if (networkAgent.getCurrentScore() != oldScore) { 4987 rematchAllNetworksAndRequests(networkAgent, oldScore); 4988 } 4989 notifyNetworkCallbacks(networkAgent, (state == NetworkInfo.State.SUSPENDED ? 4990 ConnectivityManager.CALLBACK_SUSPENDED : 4991 ConnectivityManager.CALLBACK_RESUMED)); 4992 mLegacyTypeTracker.update(networkAgent); 4993 } 4994 } 4995 4996 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4997 if (VDBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4998 if (score < 0) { 4999 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 5000 "). Bumping score to min of 0"); 5001 score = 0; 5002 } 5003 5004 final int oldScore = nai.getCurrentScore(); 5005 nai.setCurrentScore(score); 5006 5007 rematchAllNetworksAndRequests(nai, oldScore); 5008 5009 sendUpdatedScoreToFactories(nai); 5010 } 5011 5012 // notify only this one new request of the current state 5013 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 5014 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 5015 // TODO - read state from monitor to decide what to send. 5016// if (nai.networkMonitor.isLingering()) { 5017// notifyType = NetworkCallbacks.LOSING; 5018// } else if (nai.networkMonitor.isEvaluating()) { 5019// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 5020// } 5021 if (nri.mPendingIntent == null) { 5022 callCallbackForRequest(nri, nai, notifyType); 5023 } else { 5024 sendPendingIntentForRequest(nri, nai, notifyType); 5025 } 5026 } 5027 5028 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, DetailedState state, int type) { 5029 // The NetworkInfo we actually send out has no bearing on the real 5030 // state of affairs. For example, if the default connection is mobile, 5031 // and a request for HIPRI has just gone away, we need to pretend that 5032 // HIPRI has just disconnected. So we need to set the type to HIPRI and 5033 // the state to DISCONNECTED, even though the network is of type MOBILE 5034 // and is still connected. 5035 NetworkInfo info = new NetworkInfo(nai.networkInfo); 5036 info.setType(type); 5037 if (state != DetailedState.DISCONNECTED) { 5038 info.setDetailedState(state, null, info.getExtraInfo()); 5039 sendConnectedBroadcast(info); 5040 } else { 5041 info.setDetailedState(state, info.getReason(), info.getExtraInfo()); 5042 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 5043 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 5044 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 5045 if (info.isFailover()) { 5046 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 5047 nai.networkInfo.setFailover(false); 5048 } 5049 if (info.getReason() != null) { 5050 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 5051 } 5052 if (info.getExtraInfo() != null) { 5053 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 5054 } 5055 NetworkAgentInfo newDefaultAgent = null; 5056 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 5057 newDefaultAgent = getDefaultNetwork(); 5058 if (newDefaultAgent != null) { 5059 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 5060 newDefaultAgent.networkInfo); 5061 } else { 5062 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 5063 } 5064 } 5065 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 5066 mDefaultInetConditionPublished); 5067 sendStickyBroadcast(intent); 5068 if (newDefaultAgent != null) { 5069 sendConnectedBroadcast(newDefaultAgent.networkInfo); 5070 } 5071 } 5072 } 5073 5074 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 5075 if (VDBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 5076 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 5077 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 5078 NetworkRequestInfo nri = mNetworkRequests.get(nr); 5079 if (VDBG) log(" sending notification for " + nr); 5080 if (nri.mPendingIntent == null) { 5081 callCallbackForRequest(nri, networkAgent, notifyType); 5082 } else { 5083 sendPendingIntentForRequest(nri, networkAgent, notifyType); 5084 } 5085 } 5086 } 5087 5088 private String notifyTypeToName(int notifyType) { 5089 switch (notifyType) { 5090 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 5091 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 5092 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 5093 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 5094 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 5095 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 5096 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 5097 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 5098 } 5099 return "UNKNOWN"; 5100 } 5101 5102 /** 5103 * Notify NetworkStatsService that the set of active ifaces has changed, or that one of the 5104 * properties tracked by NetworkStatsService on an active iface has changed. 5105 */ 5106 private void notifyIfacesChangedForNetworkStats() { 5107 try { 5108 mStatsService.forceUpdateIfaces(); 5109 } catch (Exception ignored) { 5110 } 5111 } 5112 5113 @Override 5114 public boolean addVpnAddress(String address, int prefixLength) { 5115 throwIfLockdownEnabled(); 5116 int user = UserHandle.getUserId(Binder.getCallingUid()); 5117 synchronized (mVpns) { 5118 return mVpns.get(user).addAddress(address, prefixLength); 5119 } 5120 } 5121 5122 @Override 5123 public boolean removeVpnAddress(String address, int prefixLength) { 5124 throwIfLockdownEnabled(); 5125 int user = UserHandle.getUserId(Binder.getCallingUid()); 5126 synchronized (mVpns) { 5127 return mVpns.get(user).removeAddress(address, prefixLength); 5128 } 5129 } 5130 5131 @Override 5132 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 5133 throwIfLockdownEnabled(); 5134 int user = UserHandle.getUserId(Binder.getCallingUid()); 5135 boolean success; 5136 synchronized (mVpns) { 5137 success = mVpns.get(user).setUnderlyingNetworks(networks); 5138 } 5139 if (success) { 5140 notifyIfacesChangedForNetworkStats(); 5141 } 5142 return success; 5143 } 5144 5145 @Override 5146 public String getCaptivePortalServerUrl() { 5147 return NetworkMonitor.getCaptivePortalServerUrl(mContext); 5148 } 5149 5150 @Override 5151 public void startNattKeepalive(Network network, int intervalSeconds, Messenger messenger, 5152 IBinder binder, String srcAddr, int srcPort, String dstAddr) { 5153 enforceKeepalivePermission(); 5154 mKeepaliveTracker.startNattKeepalive( 5155 getNetworkAgentInfoForNetwork(network), 5156 intervalSeconds, messenger, binder, 5157 srcAddr, srcPort, dstAddr, ConnectivityManager.PacketKeepalive.NATT_PORT); 5158 } 5159 5160 @Override 5161 public void stopKeepalive(Network network, int slot) { 5162 mHandler.sendMessage(mHandler.obtainMessage( 5163 NetworkAgent.CMD_STOP_PACKET_KEEPALIVE, slot, PacketKeepalive.SUCCESS, network)); 5164 } 5165 5166 @Override 5167 public void factoryReset() { 5168 enforceConnectivityInternalPermission(); 5169 5170 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 5171 return; 5172 } 5173 5174 final int userId = UserHandle.getCallingUserId(); 5175 5176 // Turn airplane mode off 5177 setAirplaneMode(false); 5178 5179 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 5180 // Untether 5181 for (String tether : getTetheredIfaces()) { 5182 untether(tether); 5183 } 5184 } 5185 5186 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 5187 // Remove always-on package 5188 synchronized (mVpns) { 5189 final String alwaysOnPackage = getAlwaysOnVpnPackage(userId); 5190 if (alwaysOnPackage != null) { 5191 setAlwaysOnVpnPackage(userId, null, false); 5192 setVpnPackageAuthorization(alwaysOnPackage, userId, false); 5193 } 5194 } 5195 5196 // Turn VPN off 5197 VpnConfig vpnConfig = getVpnConfig(userId); 5198 if (vpnConfig != null) { 5199 if (vpnConfig.legacy) { 5200 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 5201 } else { 5202 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 5203 // in the future without user intervention. 5204 setVpnPackageAuthorization(vpnConfig.user, userId, false); 5205 5206 prepareVpn(null, VpnConfig.LEGACY_VPN, userId); 5207 } 5208 } 5209 } 5210 } 5211 5212 @VisibleForTesting 5213 public NetworkMonitor createNetworkMonitor(Context context, Handler handler, 5214 NetworkAgentInfo nai, NetworkRequest defaultRequest) { 5215 return new NetworkMonitor(context, handler, nai, defaultRequest); 5216 } 5217 5218 private static void logDefaultNetworkEvent(NetworkAgentInfo newNai, NetworkAgentInfo prevNai) { 5219 int newNetid = NETID_UNSET; 5220 int prevNetid = NETID_UNSET; 5221 int[] transports = new int[0]; 5222 boolean hadIPv4 = false; 5223 boolean hadIPv6 = false; 5224 5225 if (newNai != null) { 5226 newNetid = newNai.network.netId; 5227 transports = newNai.networkCapabilities.getTransportTypes(); 5228 } 5229 if (prevNai != null) { 5230 prevNetid = prevNai.network.netId; 5231 final LinkProperties lp = prevNai.linkProperties; 5232 hadIPv4 = lp.hasIPv4Address() && lp.hasIPv4DefaultRoute(); 5233 hadIPv6 = lp.hasGlobalIPv6Address() && lp.hasIPv6DefaultRoute(); 5234 } 5235 5236 DefaultNetworkEvent.logEvent(newNetid, transports, prevNetid, hadIPv4, hadIPv6); 5237 } 5238} 5239