ConnectivityService.java revision a1540899f7c5a5e7b9c117baa2a87710e9d881e6
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.RULE_NONE; 34import static android.net.NetworkPolicyManager.RULE_REJECT_ALL; 35import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 36import static android.net.NetworkPolicyManager.RULE_TEMPORARY_ALLOW_METERED; 37import static android.net.NetworkPolicyManager.uidRulesToString; 38 39import android.annotation.Nullable; 40import android.app.BroadcastOptions; 41import android.app.Notification; 42import android.app.NotificationManager; 43import android.app.PendingIntent; 44import android.content.BroadcastReceiver; 45import android.content.ContentResolver; 46import android.content.Context; 47import android.content.Intent; 48import android.content.IntentFilter; 49import android.content.pm.PackageManager; 50import android.content.res.Configuration; 51import android.content.res.Resources; 52import android.database.ContentObserver; 53import android.net.ConnectivityManager; 54import android.net.ConnectivityManager.PacketKeepalive; 55import android.net.IConnectivityManager; 56import android.net.INetworkManagementEventObserver; 57import android.net.INetworkPolicyListener; 58import android.net.INetworkPolicyManager; 59import android.net.INetworkStatsService; 60import android.net.LinkProperties; 61import android.net.LinkProperties.CompareResult; 62import android.net.Network; 63import android.net.NetworkAgent; 64import android.net.NetworkCapabilities; 65import android.net.NetworkConfig; 66import android.net.NetworkInfo; 67import android.net.NetworkInfo.DetailedState; 68import android.net.NetworkMisc; 69import android.net.NetworkQuotaInfo; 70import android.net.NetworkRequest; 71import android.net.NetworkState; 72import android.net.NetworkUtils; 73import android.net.Proxy; 74import android.net.ProxyInfo; 75import android.net.RouteInfo; 76import android.net.UidRange; 77import android.net.Uri; 78import android.net.metrics.DefaultNetworkEvent; 79import android.net.metrics.NetworkEvent; 80import android.os.Binder; 81import android.os.Build; 82import android.os.Bundle; 83import android.os.FileUtils; 84import android.os.Handler; 85import android.os.HandlerThread; 86import android.os.IBinder; 87import android.os.INetworkManagementService; 88import android.os.Looper; 89import android.os.Message; 90import android.os.Messenger; 91import android.os.ParcelFileDescriptor; 92import android.os.PowerManager; 93import android.os.Process; 94import android.os.RemoteException; 95import android.os.ResultReceiver; 96import android.os.SystemProperties; 97import android.os.UserHandle; 98import android.os.UserManager; 99import android.provider.Settings; 100import android.security.Credentials; 101import android.security.KeyStore; 102import android.telephony.TelephonyManager; 103import android.text.TextUtils; 104import android.util.ArraySet; 105import android.util.LocalLog; 106import android.util.LocalLog.ReadOnlyLocalLog; 107import android.util.Log; 108import android.util.Pair; 109import android.util.Slog; 110import android.util.SparseArray; 111import android.util.SparseBooleanArray; 112import android.util.SparseIntArray; 113import android.util.Xml; 114 115import com.android.internal.R; 116import com.android.internal.annotations.GuardedBy; 117import com.android.internal.annotations.VisibleForTesting; 118import com.android.internal.app.IBatteryStats; 119import com.android.internal.net.LegacyVpnInfo; 120import com.android.internal.net.NetworkStatsFactory; 121import com.android.internal.net.VpnConfig; 122import com.android.internal.net.VpnInfo; 123import com.android.internal.net.VpnProfile; 124import com.android.internal.util.AsyncChannel; 125import com.android.internal.util.IndentingPrintWriter; 126import com.android.internal.util.MessageUtils; 127import com.android.internal.util.XmlUtils; 128import com.android.server.am.BatteryStatsService; 129import com.android.server.connectivity.DataConnectionStats; 130import com.android.server.connectivity.KeepaliveTracker; 131import com.android.server.connectivity.Nat464Xlat; 132import com.android.server.connectivity.NetworkAgentInfo; 133import com.android.server.connectivity.NetworkDiagnostics; 134import com.android.server.connectivity.NetworkMonitor; 135import com.android.server.connectivity.PacManager; 136import com.android.server.connectivity.PermissionMonitor; 137import com.android.server.connectivity.Tethering; 138import com.android.server.connectivity.Vpn; 139import com.android.server.net.BaseNetworkObserver; 140import com.android.server.net.LockdownVpnTracker; 141 142import com.google.android.collect.Lists; 143 144import org.xmlpull.v1.XmlPullParser; 145import org.xmlpull.v1.XmlPullParserException; 146 147import java.io.File; 148import java.io.FileDescriptor; 149import java.io.FileNotFoundException; 150import java.io.FileReader; 151import java.io.IOException; 152import java.io.PrintWriter; 153import java.net.Inet4Address; 154import java.net.InetAddress; 155import java.net.UnknownHostException; 156import java.util.ArrayDeque; 157import java.util.ArrayList; 158import java.util.Arrays; 159import java.util.Collection; 160import java.util.HashMap; 161import java.util.HashSet; 162import java.util.List; 163import java.util.Map; 164import java.util.Objects; 165import java.util.SortedSet; 166import java.util.TreeSet; 167 168/** 169 * @hide 170 */ 171public class ConnectivityService extends IConnectivityManager.Stub 172 implements PendingIntent.OnFinished { 173 private static final String TAG = "ConnectivityService"; 174 175 private static final boolean DBG = true; 176 private static final boolean VDBG = false; 177 178 private static final boolean LOGD_RULES = false; 179 private static final boolean LOGD_BLOCKED_NETWORKINFO = true; 180 181 // TODO: create better separation between radio types and network types 182 183 // how long to wait before switching back to a radio's default network 184 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 185 // system property that can override the above value 186 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 187 "android.telephony.apn-restore"; 188 189 // How long to wait before putting up a "This network doesn't have an Internet connection, 190 // connect anyway?" dialog after the user selects a network that doesn't validate. 191 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 192 193 // How long to delay to removal of a pending intent based request. 194 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 195 private final int mReleasePendingIntentDelayMs; 196 197 private Tethering mTethering; 198 199 private final PermissionMonitor mPermissionMonitor; 200 201 private KeyStore mKeyStore; 202 203 @GuardedBy("mVpns") 204 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 205 206 private boolean mLockdownEnabled; 207 private LockdownVpnTracker mLockdownTracker; 208 209 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 210 private Object mRulesLock = new Object(); 211 /** Currently active network rules by UID. */ 212 @GuardedBy("mRulesLock") 213 private SparseIntArray mUidRules = new SparseIntArray(); 214 /** Set of ifaces that are costly. */ 215 @GuardedBy("mRulesLock") 216 private ArraySet<String> mMeteredIfaces = new ArraySet<>(); 217 /** Flag indicating if background data is restricted. */ 218 @GuardedBy("mRulesLock") 219 private boolean mRestrictBackground; 220 221 final private Context mContext; 222 private int mNetworkPreference; 223 // 0 is full bad, 100 is full good 224 private int mDefaultInetConditionPublished = 0; 225 226 private int mNumDnsEntries; 227 228 private boolean mTestMode; 229 private static ConnectivityService sServiceInstance; 230 231 private INetworkManagementService mNetd; 232 private INetworkStatsService mStatsService; 233 private INetworkPolicyManager mPolicyManager; 234 235 private String mCurrentTcpBufferSizes; 236 237 private static final int ENABLED = 1; 238 private static final int DISABLED = 0; 239 240 private static final SparseArray<String> sMagicDecoderRing = MessageUtils.findMessageNames( 241 new Class[] { AsyncChannel.class, ConnectivityService.class, NetworkAgent.class }); 242 243 private enum ReapUnvalidatedNetworks { 244 // Tear down networks that have no chance (e.g. even if validated) of becoming 245 // the highest scoring network satisfying a NetworkRequest. This should be passed when 246 // all networks have been rematched against all NetworkRequests. 247 REAP, 248 // Don't reap networks. This should be passed when some networks have not yet been 249 // rematched against all NetworkRequests. 250 DONT_REAP 251 }; 252 253 /** 254 * used internally to change our mobile data enabled flag 255 */ 256 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 257 258 /** 259 * used internally to clear a wakelock when transitioning 260 * from one net to another. Clear happens when we get a new 261 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 262 * after a timeout if no network is found (typically 1 min). 263 */ 264 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 265 266 /** 267 * used internally to reload global proxy settings 268 */ 269 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 270 271 /** 272 * PAC manager has received new port. 273 */ 274 private static final int EVENT_PROXY_HAS_CHANGED = 16; 275 276 /** 277 * used internally when registering NetworkFactories 278 * obj = NetworkFactoryInfo 279 */ 280 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 281 282 /** 283 * used internally when registering NetworkAgents 284 * obj = Messenger 285 */ 286 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 287 288 /** 289 * used to add a network request 290 * includes a NetworkRequestInfo 291 */ 292 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 293 294 /** 295 * indicates a timeout period is over - check if we had a network yet or not 296 * and if not, call the timeout calback (but leave the request live until they 297 * cancel it. 298 * includes a NetworkRequestInfo 299 */ 300 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 301 302 /** 303 * used to add a network listener - no request 304 * includes a NetworkRequestInfo 305 */ 306 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 307 308 /** 309 * used to remove a network request, either a listener or a real request 310 * arg1 = UID of caller 311 * obj = NetworkRequest 312 */ 313 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 314 315 /** 316 * used internally when registering NetworkFactories 317 * obj = Messenger 318 */ 319 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 320 321 /** 322 * used internally to expire a wakelock when transitioning 323 * from one net to another. Expire happens when we fail to find 324 * a new network (typically after 1 minute) - 325 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 326 * a replacement network. 327 */ 328 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 329 330 /** 331 * Used internally to indicate the system is ready. 332 */ 333 private static final int EVENT_SYSTEM_READY = 25; 334 335 /** 336 * used to add a network request with a pending intent 337 * obj = NetworkRequestInfo 338 */ 339 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 340 341 /** 342 * used to remove a pending intent and its associated network request. 343 * arg1 = UID of caller 344 * obj = PendingIntent 345 */ 346 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 347 348 /** 349 * used to specify whether a network should be used even if unvalidated. 350 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 351 * arg2 = whether to remember this choice in the future (1 or 0) 352 * obj = network 353 */ 354 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 355 356 /** 357 * used to ask the user to confirm a connection to an unvalidated network. 358 * obj = network 359 */ 360 private static final int EVENT_PROMPT_UNVALIDATED = 29; 361 362 /** 363 * used internally to (re)configure mobile data always-on settings. 364 */ 365 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 366 367 /** 368 * used to add a network listener with a pending intent 369 * obj = NetworkRequestInfo 370 */ 371 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 372 373 /** Handler thread used for both of the handlers below. */ 374 @VisibleForTesting 375 protected final HandlerThread mHandlerThread; 376 /** Handler used for internal events. */ 377 final private InternalHandler mHandler; 378 /** Handler used for incoming {@link NetworkStateTracker} events. */ 379 final private NetworkStateTrackerHandler mTrackerHandler; 380 381 private boolean mSystemReady; 382 private Intent mInitialBroadcast; 383 384 private PowerManager.WakeLock mNetTransitionWakeLock; 385 private String mNetTransitionWakeLockCausedBy = ""; 386 private int mNetTransitionWakeLockSerialNumber; 387 private int mNetTransitionWakeLockTimeout; 388 private final PowerManager.WakeLock mPendingIntentWakeLock; 389 390 // used in DBG mode to track inet condition reports 391 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 392 private ArrayList mInetLog; 393 394 // track the current default http proxy - tell the world if we get a new one (real change) 395 private volatile ProxyInfo mDefaultProxy = null; 396 private Object mProxyLock = new Object(); 397 private boolean mDefaultProxyDisabled = false; 398 399 // track the global proxy. 400 private ProxyInfo mGlobalProxy = null; 401 402 private PacManager mPacManager = null; 403 404 final private SettingsObserver mSettingsObserver; 405 406 private UserManager mUserManager; 407 408 NetworkConfig[] mNetConfigs; 409 int mNetworksDefined; 410 411 // the set of network types that can only be enabled by system/sig apps 412 List mProtectedNetworks; 413 414 private DataConnectionStats mDataConnectionStats; 415 416 TelephonyManager mTelephonyManager; 417 418 private KeepaliveTracker mKeepaliveTracker; 419 420 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 421 private final static int MIN_NET_ID = 100; // some reserved marks 422 private final static int MAX_NET_ID = 65535; 423 private int mNextNetId = MIN_NET_ID; 424 425 // sequence number of NetworkRequests 426 private int mNextNetworkRequestId = 1; 427 428 // NetworkRequest activity String log entries. 429 private static final int MAX_NETWORK_REQUEST_LOGS = 20; 430 private final LocalLog mNetworkRequestInfoLogs = new LocalLog(MAX_NETWORK_REQUEST_LOGS); 431 432 // Array of <Network,ReadOnlyLocalLogs> tracking network validation and results 433 private static final int MAX_VALIDATION_LOGS = 10; 434 private static class ValidationLog { 435 final Network mNetwork; 436 final String mNetworkExtraInfo; 437 final ReadOnlyLocalLog mLog; 438 439 ValidationLog(Network network, String networkExtraInfo, ReadOnlyLocalLog log) { 440 mNetwork = network; 441 mNetworkExtraInfo = networkExtraInfo; 442 mLog = log; 443 } 444 } 445 private final ArrayDeque<ValidationLog> mValidationLogs = 446 new ArrayDeque<ValidationLog>(MAX_VALIDATION_LOGS); 447 448 private void addValidationLogs(ReadOnlyLocalLog log, Network network, String networkExtraInfo) { 449 synchronized(mValidationLogs) { 450 while (mValidationLogs.size() >= MAX_VALIDATION_LOGS) { 451 mValidationLogs.removeLast(); 452 } 453 mValidationLogs.addFirst(new ValidationLog(network, networkExtraInfo, log)); 454 } 455 } 456 457 /** 458 * Implements support for the legacy "one network per network type" model. 459 * 460 * We used to have a static array of NetworkStateTrackers, one for each 461 * network type, but that doesn't work any more now that we can have, 462 * for example, more that one wifi network. This class stores all the 463 * NetworkAgentInfo objects that support a given type, but the legacy 464 * API will only see the first one. 465 * 466 * It serves two main purposes: 467 * 468 * 1. Provide information about "the network for a given type" (since this 469 * API only supports one). 470 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 471 * the first network for a given type changes, or if the default network 472 * changes. 473 */ 474 private class LegacyTypeTracker { 475 476 private static final boolean DBG = true; 477 private static final boolean VDBG = false; 478 479 /** 480 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 481 * Each list holds references to all NetworkAgentInfos that are used to 482 * satisfy requests for that network type. 483 * 484 * This array is built out at startup such that an unsupported network 485 * doesn't get an ArrayList instance, making this a tristate: 486 * unsupported, supported but not active and active. 487 * 488 * The actual lists are populated when we scan the network types that 489 * are supported on this device. 490 */ 491 private ArrayList<NetworkAgentInfo> mTypeLists[]; 492 493 public LegacyTypeTracker() { 494 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 495 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 496 } 497 498 public void addSupportedType(int type) { 499 if (mTypeLists[type] != null) { 500 throw new IllegalStateException( 501 "legacy list for type " + type + "already initialized"); 502 } 503 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 504 } 505 506 public boolean isTypeSupported(int type) { 507 return isNetworkTypeValid(type) && mTypeLists[type] != null; 508 } 509 510 public NetworkAgentInfo getNetworkForType(int type) { 511 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 512 return mTypeLists[type].get(0); 513 } else { 514 return null; 515 } 516 } 517 518 private void maybeLogBroadcast(NetworkAgentInfo nai, DetailedState state, int type, 519 boolean isDefaultNetwork) { 520 if (DBG) { 521 log("Sending " + state + 522 " broadcast for type " + type + " " + nai.name() + 523 " isDefaultNetwork=" + isDefaultNetwork); 524 } 525 } 526 527 /** Adds the given network to the specified legacy type list. */ 528 public void add(int type, NetworkAgentInfo nai) { 529 if (!isTypeSupported(type)) { 530 return; // Invalid network type. 531 } 532 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 533 534 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 535 if (list.contains(nai)) { 536 return; 537 } 538 539 list.add(nai); 540 541 // Send a broadcast if this is the first network of its type or if it's the default. 542 final boolean isDefaultNetwork = isDefaultNetwork(nai); 543 if (list.size() == 1 || isDefaultNetwork) { 544 maybeLogBroadcast(nai, DetailedState.CONNECTED, type, isDefaultNetwork); 545 sendLegacyNetworkBroadcast(nai, DetailedState.CONNECTED, type); 546 } 547 } 548 549 /** Removes the given network from the specified legacy type list. */ 550 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 551 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 552 if (list == null || list.isEmpty()) { 553 return; 554 } 555 556 final boolean wasFirstNetwork = list.get(0).equals(nai); 557 558 if (!list.remove(nai)) { 559 return; 560 } 561 562 final DetailedState state = DetailedState.DISCONNECTED; 563 564 if (wasFirstNetwork || wasDefault) { 565 maybeLogBroadcast(nai, state, type, wasDefault); 566 sendLegacyNetworkBroadcast(nai, state, type); 567 } 568 569 if (!list.isEmpty() && wasFirstNetwork) { 570 if (DBG) log("Other network available for type " + type + 571 ", sending connected broadcast"); 572 final NetworkAgentInfo replacement = list.get(0); 573 maybeLogBroadcast(replacement, state, type, isDefaultNetwork(replacement)); 574 sendLegacyNetworkBroadcast(replacement, state, type); 575 } 576 } 577 578 /** Removes the given network from all legacy type lists. */ 579 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 580 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 581 for (int type = 0; type < mTypeLists.length; type++) { 582 remove(type, nai, wasDefault); 583 } 584 } 585 586 // send out another legacy broadcast - currently only used for suspend/unsuspend 587 // toggle 588 public void update(NetworkAgentInfo nai) { 589 final boolean isDefault = isDefaultNetwork(nai); 590 final DetailedState state = nai.networkInfo.getDetailedState(); 591 for (int type = 0; type < mTypeLists.length; type++) { 592 final ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 593 final boolean contains = (list != null && list.contains(nai)); 594 final boolean isFirst = (list != null && list.size() > 0 && nai == list.get(0)); 595 if (isFirst || (contains && isDefault)) { 596 maybeLogBroadcast(nai, state, type, isDefault); 597 sendLegacyNetworkBroadcast(nai, state, type); 598 } 599 } 600 } 601 602 private String naiToString(NetworkAgentInfo nai) { 603 String name = (nai != null) ? nai.name() : "null"; 604 String state = (nai.networkInfo != null) ? 605 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 606 "???/???"; 607 return name + " " + state; 608 } 609 610 public void dump(IndentingPrintWriter pw) { 611 pw.println("mLegacyTypeTracker:"); 612 pw.increaseIndent(); 613 pw.print("Supported types:"); 614 for (int type = 0; type < mTypeLists.length; type++) { 615 if (mTypeLists[type] != null) pw.print(" " + type); 616 } 617 pw.println(); 618 pw.println("Current state:"); 619 pw.increaseIndent(); 620 for (int type = 0; type < mTypeLists.length; type++) { 621 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 622 for (NetworkAgentInfo nai : mTypeLists[type]) { 623 pw.println(type + " " + naiToString(nai)); 624 } 625 } 626 pw.decreaseIndent(); 627 pw.decreaseIndent(); 628 pw.println(); 629 } 630 } 631 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 632 633 @VisibleForTesting 634 protected HandlerThread createHandlerThread() { 635 return new HandlerThread("ConnectivityServiceThread"); 636 } 637 638 public ConnectivityService(Context context, INetworkManagementService netManager, 639 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 640 if (DBG) log("ConnectivityService starting up"); 641 642 mDefaultRequest = createInternetRequestForTransport(-1); 643 NetworkRequestInfo defaultNRI = new NetworkRequestInfo(null, mDefaultRequest, 644 new Binder(), NetworkRequestType.REQUEST); 645 mNetworkRequests.put(mDefaultRequest, defaultNRI); 646 mNetworkRequestInfoLogs.log("REGISTER " + defaultNRI); 647 648 mDefaultMobileDataRequest = createInternetRequestForTransport( 649 NetworkCapabilities.TRANSPORT_CELLULAR); 650 651 mHandlerThread = createHandlerThread(); 652 mHandlerThread.start(); 653 mHandler = new InternalHandler(mHandlerThread.getLooper()); 654 mTrackerHandler = new NetworkStateTrackerHandler(mHandlerThread.getLooper()); 655 656 // setup our unique device name 657 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 658 String id = Settings.Secure.getString(context.getContentResolver(), 659 Settings.Secure.ANDROID_ID); 660 if (id != null && id.length() > 0) { 661 String name = new String("android-").concat(id); 662 SystemProperties.set("net.hostname", name); 663 } 664 } 665 666 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 667 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 668 669 mContext = checkNotNull(context, "missing Context"); 670 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 671 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 672 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 673 mKeyStore = KeyStore.getInstance(); 674 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 675 676 try { 677 mPolicyManager.setConnectivityListener(mPolicyListener); 678 mRestrictBackground = mPolicyManager.getRestrictBackground(); 679 } catch (RemoteException e) { 680 // ouch, no rules updates means some processes may never get network 681 loge("unable to register INetworkPolicyListener" + e); 682 } 683 684 final PowerManager powerManager = (PowerManager) context.getSystemService( 685 Context.POWER_SERVICE); 686 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 687 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 688 com.android.internal.R.integer.config_networkTransitionTimeout); 689 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 690 691 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 692 693 // TODO: What is the "correct" way to do determine if this is a wifi only device? 694 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 695 log("wifiOnly=" + wifiOnly); 696 String[] naStrings = context.getResources().getStringArray( 697 com.android.internal.R.array.networkAttributes); 698 for (String naString : naStrings) { 699 try { 700 NetworkConfig n = new NetworkConfig(naString); 701 if (VDBG) log("naString=" + naString + " config=" + n); 702 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 703 loge("Error in networkAttributes - ignoring attempt to define type " + 704 n.type); 705 continue; 706 } 707 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 708 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 709 n.type); 710 continue; 711 } 712 if (mNetConfigs[n.type] != null) { 713 loge("Error in networkAttributes - ignoring attempt to redefine type " + 714 n.type); 715 continue; 716 } 717 mLegacyTypeTracker.addSupportedType(n.type); 718 719 mNetConfigs[n.type] = n; 720 mNetworksDefined++; 721 } catch(Exception e) { 722 // ignore it - leave the entry null 723 } 724 } 725 726 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 727 if (mNetConfigs[TYPE_VPN] == null) { 728 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 729 // don't need to add TYPE_VPN to mNetConfigs. 730 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 731 mNetworksDefined++; // used only in the log() statement below. 732 } 733 734 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 735 736 mProtectedNetworks = new ArrayList<Integer>(); 737 int[] protectedNetworks = context.getResources().getIntArray( 738 com.android.internal.R.array.config_protectedNetworks); 739 for (int p : protectedNetworks) { 740 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 741 mProtectedNetworks.add(p); 742 } else { 743 if (DBG) loge("Ignoring protectedNetwork " + p); 744 } 745 } 746 747 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 748 && SystemProperties.get("ro.build.type").equals("eng"); 749 750 mTethering = new Tethering(mContext, mNetd, statsService); 751 752 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 753 754 //set up the listener for user state for creating user VPNs 755 IntentFilter intentFilter = new IntentFilter(); 756 intentFilter.addAction(Intent.ACTION_USER_STARTED); 757 intentFilter.addAction(Intent.ACTION_USER_STOPPED); 758 intentFilter.addAction(Intent.ACTION_USER_ADDED); 759 intentFilter.addAction(Intent.ACTION_USER_REMOVED); 760 intentFilter.addAction(Intent.ACTION_USER_UNLOCKED); 761 mContext.registerReceiverAsUser( 762 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 763 764 try { 765 mNetd.registerObserver(mTethering); 766 mNetd.registerObserver(mDataActivityObserver); 767 } catch (RemoteException e) { 768 loge("Error registering observer :" + e); 769 } 770 771 if (DBG) { 772 mInetLog = new ArrayList(); 773 } 774 775 mSettingsObserver = new SettingsObserver(mContext, mHandler); 776 registerSettingsCallbacks(); 777 778 mDataConnectionStats = new DataConnectionStats(mContext); 779 mDataConnectionStats.startMonitoring(); 780 781 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 782 783 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 784 785 mKeepaliveTracker = new KeepaliveTracker(mHandler); 786 } 787 788 private NetworkRequest createInternetRequestForTransport(int transportType) { 789 NetworkCapabilities netCap = new NetworkCapabilities(); 790 netCap.addCapability(NET_CAPABILITY_INTERNET); 791 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 792 if (transportType > -1) { 793 netCap.addTransportType(transportType); 794 } 795 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 796 } 797 798 // Used only for testing. 799 // TODO: Delete this and either: 800 // 1. Give Fake SettingsProvider the ability to send settings change notifications (requires 801 // changing ContentResolver to make registerContentObserver non-final). 802 // 2. Give FakeSettingsProvider an alternative notification mechanism and have the test use it 803 // by subclassing SettingsObserver. 804 @VisibleForTesting 805 void updateMobileDataAlwaysOn() { 806 mHandler.sendEmptyMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 807 } 808 809 private void handleMobileDataAlwaysOn() { 810 final boolean enable = (Settings.Global.getInt( 811 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 812 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 813 if (enable == isEnabled) { 814 return; // Nothing to do. 815 } 816 817 if (enable) { 818 handleRegisterNetworkRequest(new NetworkRequestInfo( 819 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestType.REQUEST)); 820 } else { 821 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 822 } 823 } 824 825 private void registerSettingsCallbacks() { 826 // Watch for global HTTP proxy changes. 827 mSettingsObserver.observe( 828 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 829 EVENT_APPLY_GLOBAL_HTTP_PROXY); 830 831 // Watch for whether or not to keep mobile data always on. 832 mSettingsObserver.observe( 833 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 834 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 835 } 836 837 private synchronized int nextNetworkRequestId() { 838 return mNextNetworkRequestId++; 839 } 840 841 @VisibleForTesting 842 protected int reserveNetId() { 843 synchronized (mNetworkForNetId) { 844 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 845 int netId = mNextNetId; 846 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 847 // Make sure NetID unused. http://b/16815182 848 if (!mNetIdInUse.get(netId)) { 849 mNetIdInUse.put(netId, true); 850 return netId; 851 } 852 } 853 } 854 throw new IllegalStateException("No free netIds"); 855 } 856 857 private NetworkState getFilteredNetworkState(int networkType, int uid, boolean ignoreBlocked) { 858 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 859 final NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 860 final NetworkState state; 861 if (nai != null) { 862 state = nai.getNetworkState(); 863 state.networkInfo.setType(networkType); 864 } else { 865 final NetworkInfo info = new NetworkInfo(networkType, 0, 866 getNetworkTypeName(networkType), ""); 867 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 868 info.setIsAvailable(true); 869 state = new NetworkState(info, new LinkProperties(), new NetworkCapabilities(), 870 null, null, null); 871 } 872 filterNetworkStateForUid(state, uid, ignoreBlocked); 873 return state; 874 } else { 875 return NetworkState.EMPTY; 876 } 877 } 878 879 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 880 if (network == null) { 881 return null; 882 } 883 synchronized (mNetworkForNetId) { 884 return mNetworkForNetId.get(network.netId); 885 } 886 } 887 888 private Network[] getVpnUnderlyingNetworks(int uid) { 889 if (!mLockdownEnabled) { 890 int user = UserHandle.getUserId(uid); 891 synchronized (mVpns) { 892 Vpn vpn = mVpns.get(user); 893 if (vpn != null && vpn.appliesToUid(uid)) { 894 return vpn.getUnderlyingNetworks(); 895 } 896 } 897 } 898 return null; 899 } 900 901 private NetworkState getUnfilteredActiveNetworkState(int uid) { 902 NetworkAgentInfo nai = getDefaultNetwork(); 903 904 final Network[] networks = getVpnUnderlyingNetworks(uid); 905 if (networks != null) { 906 // getUnderlyingNetworks() returns: 907 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 908 // empty array => the VPN explicitly said "no default network". 909 // non-empty array => the VPN specified one or more default networks; we use the 910 // first one. 911 if (networks.length > 0) { 912 nai = getNetworkAgentInfoForNetwork(networks[0]); 913 } else { 914 nai = null; 915 } 916 } 917 918 if (nai != null) { 919 return nai.getNetworkState(); 920 } else { 921 return NetworkState.EMPTY; 922 } 923 } 924 925 /** 926 * Check if UID should be blocked from using the network with the given LinkProperties. 927 */ 928 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid, 929 boolean ignoreBlocked) { 930 // Networks aren't blocked when ignoring blocked status 931 if (ignoreBlocked) return false; 932 // Networks are never blocked for system services 933 if (isSystem(uid)) return false; 934 935 final boolean networkMetered; 936 final int uidRules; 937 938 synchronized (mVpns) { 939 final Vpn vpn = mVpns.get(UserHandle.getUserId(uid)); 940 if (vpn != null && vpn.isBlockingUid(uid)) { 941 return true; 942 } 943 } 944 945 final String iface = (lp == null ? "" : lp.getInterfaceName()); 946 synchronized (mRulesLock) { 947 networkMetered = mMeteredIfaces.contains(iface); 948 uidRules = mUidRules.get(uid, RULE_NONE); 949 } 950 951 boolean allowed = true; 952 // Check Data Saver Mode first... 953 if (networkMetered) { 954 if ((uidRules & RULE_REJECT_METERED) != 0) { 955 if (LOGD_RULES) Log.d(TAG, "uid " + uid + " is blacklisted"); 956 // Explicitly blacklisted. 957 allowed = false; 958 } else { 959 allowed = !mRestrictBackground 960 || (uidRules & RULE_ALLOW_METERED) != 0 961 || (uidRules & RULE_TEMPORARY_ALLOW_METERED) != 0; 962 if (LOGD_RULES) Log.d(TAG, "allowed status for uid " + uid + " when" 963 + " mRestrictBackground=" + mRestrictBackground 964 + ", whitelisted=" + ((uidRules & RULE_ALLOW_METERED) != 0) 965 + ", tempWhitelist= + ((uidRules & RULE_TEMPORARY_ALLOW_METERED) != 0)" 966 + ": " + allowed); 967 } 968 } 969 // ...then power restrictions. 970 if (allowed) { 971 allowed = (uidRules & RULE_REJECT_ALL) == 0; 972 if (LOGD_RULES) Log.d(TAG, "allowed status for uid " + uid + " when" 973 + " rule is " + uidRulesToString(uidRules) + ": " + allowed); 974 } 975 return !allowed; 976 } 977 978 private void maybeLogBlockedNetworkInfo(NetworkInfo ni, int uid) { 979 if (ni == null || !LOGD_BLOCKED_NETWORKINFO) return; 980 boolean removed = false; 981 boolean added = false; 982 synchronized (mBlockedAppUids) { 983 if (ni.getDetailedState() == DetailedState.BLOCKED && mBlockedAppUids.add(uid)) { 984 added = true; 985 } else if (ni.isConnected() && mBlockedAppUids.remove(uid)) { 986 removed = true; 987 } 988 } 989 if (added) log("Returning blocked NetworkInfo to uid=" + uid); 990 else if (removed) log("Returning unblocked NetworkInfo to uid=" + uid); 991 } 992 993 /** 994 * Apply any relevant filters to {@link NetworkState} for the given UID. For 995 * example, this may mark the network as {@link DetailedState#BLOCKED} based 996 * on {@link #isNetworkWithLinkPropertiesBlocked}, or 997 * {@link NetworkInfo#isMetered()} based on network policies. 998 */ 999 private void filterNetworkStateForUid(NetworkState state, int uid, boolean ignoreBlocked) { 1000 if (state == null || state.networkInfo == null || state.linkProperties == null) return; 1001 1002 if (isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid, ignoreBlocked)) { 1003 state.networkInfo.setDetailedState(DetailedState.BLOCKED, null, null); 1004 } 1005 if (mLockdownTracker != null) { 1006 mLockdownTracker.augmentNetworkInfo(state.networkInfo); 1007 } 1008 1009 // TODO: apply metered state closer to NetworkAgentInfo 1010 final long token = Binder.clearCallingIdentity(); 1011 try { 1012 state.networkInfo.setMetered(mPolicyManager.isNetworkMetered(state)); 1013 } catch (RemoteException e) { 1014 } finally { 1015 Binder.restoreCallingIdentity(token); 1016 } 1017 } 1018 1019 /** 1020 * Return NetworkInfo for the active (i.e., connected) network interface. 1021 * It is assumed that at most one network is active at a time. If more 1022 * than one is active, it is indeterminate which will be returned. 1023 * @return the info for the active network, or {@code null} if none is 1024 * active 1025 */ 1026 @Override 1027 public NetworkInfo getActiveNetworkInfo() { 1028 enforceAccessPermission(); 1029 final int uid = Binder.getCallingUid(); 1030 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1031 filterNetworkStateForUid(state, uid, false); 1032 maybeLogBlockedNetworkInfo(state.networkInfo, uid); 1033 return state.networkInfo; 1034 } 1035 1036 @Override 1037 public Network getActiveNetwork() { 1038 enforceAccessPermission(); 1039 return getActiveNetworkForUidInternal(Binder.getCallingUid(), false); 1040 } 1041 1042 @Override 1043 public Network getActiveNetworkForUid(int uid, boolean ignoreBlocked) { 1044 enforceConnectivityInternalPermission(); 1045 return getActiveNetworkForUidInternal(uid, ignoreBlocked); 1046 } 1047 1048 private Network getActiveNetworkForUidInternal(final int uid, boolean ignoreBlocked) { 1049 final int user = UserHandle.getUserId(uid); 1050 int vpnNetId = NETID_UNSET; 1051 synchronized (mVpns) { 1052 final Vpn vpn = mVpns.get(user); 1053 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 1054 } 1055 NetworkAgentInfo nai; 1056 if (vpnNetId != NETID_UNSET) { 1057 synchronized (mNetworkForNetId) { 1058 nai = mNetworkForNetId.get(vpnNetId); 1059 } 1060 if (nai != null) return nai.network; 1061 } 1062 nai = getDefaultNetwork(); 1063 if (nai != null 1064 && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid, ignoreBlocked)) { 1065 nai = null; 1066 } 1067 return nai != null ? nai.network : null; 1068 } 1069 1070 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1071 enforceAccessPermission(); 1072 final int uid = Binder.getCallingUid(); 1073 NetworkState state = getUnfilteredActiveNetworkState(uid); 1074 return state.networkInfo; 1075 } 1076 1077 @Override 1078 public NetworkInfo getActiveNetworkInfoForUid(int uid, boolean ignoreBlocked) { 1079 enforceConnectivityInternalPermission(); 1080 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1081 filterNetworkStateForUid(state, uid, ignoreBlocked); 1082 return state.networkInfo; 1083 } 1084 1085 @Override 1086 public NetworkInfo getNetworkInfo(int networkType) { 1087 enforceAccessPermission(); 1088 final int uid = Binder.getCallingUid(); 1089 if (getVpnUnderlyingNetworks(uid) != null) { 1090 // A VPN is active, so we may need to return one of its underlying networks. This 1091 // information is not available in LegacyTypeTracker, so we have to get it from 1092 // getUnfilteredActiveNetworkState. 1093 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1094 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1095 filterNetworkStateForUid(state, uid, false); 1096 return state.networkInfo; 1097 } 1098 } 1099 final NetworkState state = getFilteredNetworkState(networkType, uid, false); 1100 return state.networkInfo; 1101 } 1102 1103 @Override 1104 public NetworkInfo getNetworkInfoForUid(Network network, int uid, boolean ignoreBlocked) { 1105 enforceAccessPermission(); 1106 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1107 if (nai != null) { 1108 final NetworkState state = nai.getNetworkState(); 1109 filterNetworkStateForUid(state, uid, ignoreBlocked); 1110 return state.networkInfo; 1111 } else { 1112 return null; 1113 } 1114 } 1115 1116 @Override 1117 public NetworkInfo[] getAllNetworkInfo() { 1118 enforceAccessPermission(); 1119 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1120 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1121 networkType++) { 1122 NetworkInfo info = getNetworkInfo(networkType); 1123 if (info != null) { 1124 result.add(info); 1125 } 1126 } 1127 return result.toArray(new NetworkInfo[result.size()]); 1128 } 1129 1130 @Override 1131 public Network getNetworkForType(int networkType) { 1132 enforceAccessPermission(); 1133 final int uid = Binder.getCallingUid(); 1134 NetworkState state = getFilteredNetworkState(networkType, uid, false); 1135 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid, false)) { 1136 return state.network; 1137 } 1138 return null; 1139 } 1140 1141 @Override 1142 public Network[] getAllNetworks() { 1143 enforceAccessPermission(); 1144 synchronized (mNetworkForNetId) { 1145 final Network[] result = new Network[mNetworkForNetId.size()]; 1146 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1147 result[i] = mNetworkForNetId.valueAt(i).network; 1148 } 1149 return result; 1150 } 1151 } 1152 1153 @Override 1154 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1155 // The basic principle is: if an app's traffic could possibly go over a 1156 // network, without the app doing anything multinetwork-specific, 1157 // (hence, by "default"), then include that network's capabilities in 1158 // the array. 1159 // 1160 // In the normal case, app traffic only goes over the system's default 1161 // network connection, so that's the only network returned. 1162 // 1163 // With a VPN in force, some app traffic may go into the VPN, and thus 1164 // over whatever underlying networks the VPN specifies, while other app 1165 // traffic may go over the system default network (e.g.: a split-tunnel 1166 // VPN, or an app disallowed by the VPN), so the set of networks 1167 // returned includes the VPN's underlying networks and the system 1168 // default. 1169 enforceAccessPermission(); 1170 1171 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1172 1173 NetworkAgentInfo nai = getDefaultNetwork(); 1174 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1175 if (nc != null) { 1176 result.put(nai.network, nc); 1177 } 1178 1179 if (!mLockdownEnabled) { 1180 synchronized (mVpns) { 1181 Vpn vpn = mVpns.get(userId); 1182 if (vpn != null) { 1183 Network[] networks = vpn.getUnderlyingNetworks(); 1184 if (networks != null) { 1185 for (Network network : networks) { 1186 nai = getNetworkAgentInfoForNetwork(network); 1187 nc = getNetworkCapabilitiesInternal(nai); 1188 if (nc != null) { 1189 result.put(network, nc); 1190 } 1191 } 1192 } 1193 } 1194 } 1195 } 1196 1197 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1198 out = result.values().toArray(out); 1199 return out; 1200 } 1201 1202 @Override 1203 public boolean isNetworkSupported(int networkType) { 1204 enforceAccessPermission(); 1205 return mLegacyTypeTracker.isTypeSupported(networkType); 1206 } 1207 1208 /** 1209 * Return LinkProperties for the active (i.e., connected) default 1210 * network interface. It is assumed that at most one default network 1211 * is active at a time. If more than one is active, it is indeterminate 1212 * which will be returned. 1213 * @return the ip properties for the active network, or {@code null} if 1214 * none is active 1215 */ 1216 @Override 1217 public LinkProperties getActiveLinkProperties() { 1218 enforceAccessPermission(); 1219 final int uid = Binder.getCallingUid(); 1220 NetworkState state = getUnfilteredActiveNetworkState(uid); 1221 return state.linkProperties; 1222 } 1223 1224 @Override 1225 public LinkProperties getLinkPropertiesForType(int networkType) { 1226 enforceAccessPermission(); 1227 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1228 if (nai != null) { 1229 synchronized (nai) { 1230 return new LinkProperties(nai.linkProperties); 1231 } 1232 } 1233 return null; 1234 } 1235 1236 // TODO - this should be ALL networks 1237 @Override 1238 public LinkProperties getLinkProperties(Network network) { 1239 enforceAccessPermission(); 1240 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1241 if (nai != null) { 1242 synchronized (nai) { 1243 return new LinkProperties(nai.linkProperties); 1244 } 1245 } 1246 return null; 1247 } 1248 1249 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1250 if (nai != null) { 1251 synchronized (nai) { 1252 if (nai.networkCapabilities != null) { 1253 return new NetworkCapabilities(nai.networkCapabilities); 1254 } 1255 } 1256 } 1257 return null; 1258 } 1259 1260 @Override 1261 public NetworkCapabilities getNetworkCapabilities(Network network) { 1262 enforceAccessPermission(); 1263 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1264 } 1265 1266 @Override 1267 public NetworkState[] getAllNetworkState() { 1268 // Require internal since we're handing out IMSI details 1269 enforceConnectivityInternalPermission(); 1270 1271 final ArrayList<NetworkState> result = Lists.newArrayList(); 1272 for (Network network : getAllNetworks()) { 1273 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1274 if (nai != null) { 1275 result.add(nai.getNetworkState()); 1276 } 1277 } 1278 return result.toArray(new NetworkState[result.size()]); 1279 } 1280 1281 @Override 1282 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1283 enforceAccessPermission(); 1284 final int uid = Binder.getCallingUid(); 1285 final long token = Binder.clearCallingIdentity(); 1286 try { 1287 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1288 if (state.networkInfo != null) { 1289 try { 1290 return mPolicyManager.getNetworkQuotaInfo(state); 1291 } catch (RemoteException e) { 1292 } 1293 } 1294 return null; 1295 } finally { 1296 Binder.restoreCallingIdentity(token); 1297 } 1298 } 1299 1300 @Override 1301 public boolean isActiveNetworkMetered() { 1302 enforceAccessPermission(); 1303 1304 final NetworkInfo info = getActiveNetworkInfo(); 1305 return (info != null) ? info.isMetered() : false; 1306 } 1307 1308 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1309 @Override 1310 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1311 int deviceType = Integer.parseInt(label); 1312 sendDataActivityBroadcast(deviceType, active, tsNanos); 1313 } 1314 }; 1315 1316 /** 1317 * Ensure that a network route exists to deliver traffic to the specified 1318 * host via the specified network interface. 1319 * @param networkType the type of the network over which traffic to the 1320 * specified host is to be routed 1321 * @param hostAddress the IP address of the host to which the route is 1322 * desired 1323 * @return {@code true} on success, {@code false} on failure 1324 */ 1325 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1326 enforceChangePermission(); 1327 if (mProtectedNetworks.contains(networkType)) { 1328 enforceConnectivityInternalPermission(); 1329 } 1330 1331 InetAddress addr; 1332 try { 1333 addr = InetAddress.getByAddress(hostAddress); 1334 } catch (UnknownHostException e) { 1335 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1336 return false; 1337 } 1338 1339 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1340 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1341 return false; 1342 } 1343 1344 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1345 if (nai == null) { 1346 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1347 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1348 } else { 1349 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1350 } 1351 return false; 1352 } 1353 1354 DetailedState netState; 1355 synchronized (nai) { 1356 netState = nai.networkInfo.getDetailedState(); 1357 } 1358 1359 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1360 if (VDBG) { 1361 log("requestRouteToHostAddress on down network " 1362 + "(" + networkType + ") - dropped" 1363 + " netState=" + netState); 1364 } 1365 return false; 1366 } 1367 1368 final int uid = Binder.getCallingUid(); 1369 final long token = Binder.clearCallingIdentity(); 1370 try { 1371 LinkProperties lp; 1372 int netId; 1373 synchronized (nai) { 1374 lp = nai.linkProperties; 1375 netId = nai.network.netId; 1376 } 1377 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1378 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1379 return ok; 1380 } finally { 1381 Binder.restoreCallingIdentity(token); 1382 } 1383 } 1384 1385 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1386 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1387 if (bestRoute == null) { 1388 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1389 } else { 1390 String iface = bestRoute.getInterface(); 1391 if (bestRoute.getGateway().equals(addr)) { 1392 // if there is no better route, add the implied hostroute for our gateway 1393 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1394 } else { 1395 // if we will connect to this through another route, add a direct route 1396 // to it's gateway 1397 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1398 } 1399 } 1400 if (DBG) log("Adding legacy route " + bestRoute + 1401 " for UID/PID " + uid + "/" + Binder.getCallingPid()); 1402 try { 1403 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1404 } catch (Exception e) { 1405 // never crash - catch them all 1406 if (DBG) loge("Exception trying to add a route: " + e); 1407 return false; 1408 } 1409 return true; 1410 } 1411 1412 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1413 @Override 1414 public void onUidRulesChanged(int uid, int uidRules) { 1415 // caller is NPMS, since we only register with them 1416 if (LOGD_RULES) { 1417 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1418 } 1419 1420 synchronized (mRulesLock) { 1421 // skip update when we've already applied rules 1422 final int oldRules = mUidRules.get(uid, RULE_NONE); 1423 if (oldRules == uidRules) return; 1424 1425 if (uidRules == RULE_NONE) { 1426 mUidRules.delete(uid); 1427 } else { 1428 mUidRules.put(uid, uidRules); 1429 } 1430 } 1431 1432 // TODO: notify UID when it has requested targeted updates 1433 } 1434 1435 @Override 1436 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1437 // caller is NPMS, since we only register with them 1438 if (LOGD_RULES) { 1439 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1440 } 1441 1442 synchronized (mRulesLock) { 1443 mMeteredIfaces.clear(); 1444 for (String iface : meteredIfaces) { 1445 mMeteredIfaces.add(iface); 1446 } 1447 } 1448 } 1449 1450 @Override 1451 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1452 // caller is NPMS, since we only register with them 1453 if (LOGD_RULES) { 1454 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1455 } 1456 1457 synchronized (mRulesLock) { 1458 mRestrictBackground = restrictBackground; 1459 } 1460 1461 if (restrictBackground) { 1462 log("onRestrictBackgroundChanged(true): disabling tethering"); 1463 mTethering.untetherAll(); 1464 } 1465 } 1466 1467 @Override 1468 public void onRestrictBackgroundWhitelistChanged(int uid, boolean whitelisted) { 1469 if (LOGD_RULES) { 1470 // caller is NPMS, since we only register with them 1471 log("onRestrictBackgroundWhitelistChanged(uid=" + uid + ", whitelisted=" 1472 + whitelisted + ")"); 1473 } 1474 } 1475 @Override 1476 public void onRestrictBackgroundBlacklistChanged(int uid, boolean blacklisted) { 1477 if (LOGD_RULES) { 1478 // caller is NPMS, since we only register with them 1479 log("onRestrictBackgroundBlacklistChanged(uid=" + uid + ", blacklisted=" 1480 + blacklisted + ")"); 1481 } 1482 } 1483 }; 1484 1485 /** 1486 * Require that the caller is either in the same user or has appropriate permission to interact 1487 * across users. 1488 * 1489 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1490 */ 1491 private void enforceCrossUserPermission(int userId) { 1492 if (userId == UserHandle.getCallingUserId()) { 1493 // Not a cross-user call. 1494 return; 1495 } 1496 mContext.enforceCallingOrSelfPermission( 1497 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1498 "ConnectivityService"); 1499 } 1500 1501 private void enforceInternetPermission() { 1502 mContext.enforceCallingOrSelfPermission( 1503 android.Manifest.permission.INTERNET, 1504 "ConnectivityService"); 1505 } 1506 1507 private void enforceAccessPermission() { 1508 mContext.enforceCallingOrSelfPermission( 1509 android.Manifest.permission.ACCESS_NETWORK_STATE, 1510 "ConnectivityService"); 1511 } 1512 1513 private void enforceChangePermission() { 1514 ConnectivityManager.enforceChangePermission(mContext); 1515 } 1516 1517 private void enforceTetherAccessPermission() { 1518 mContext.enforceCallingOrSelfPermission( 1519 android.Manifest.permission.ACCESS_NETWORK_STATE, 1520 "ConnectivityService"); 1521 } 1522 1523 private void enforceConnectivityInternalPermission() { 1524 mContext.enforceCallingOrSelfPermission( 1525 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1526 "ConnectivityService"); 1527 } 1528 1529 private void enforceKeepalivePermission() { 1530 mContext.enforceCallingOrSelfPermission(KeepaliveTracker.PERMISSION, "ConnectivityService"); 1531 } 1532 1533 public void sendConnectedBroadcast(NetworkInfo info) { 1534 enforceConnectivityInternalPermission(); 1535 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1536 } 1537 1538 private void sendInetConditionBroadcast(NetworkInfo info) { 1539 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1540 } 1541 1542 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1543 if (mLockdownTracker != null) { 1544 info = new NetworkInfo(info); 1545 mLockdownTracker.augmentNetworkInfo(info); 1546 } 1547 1548 Intent intent = new Intent(bcastType); 1549 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1550 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1551 if (info.isFailover()) { 1552 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1553 info.setFailover(false); 1554 } 1555 if (info.getReason() != null) { 1556 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1557 } 1558 if (info.getExtraInfo() != null) { 1559 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1560 info.getExtraInfo()); 1561 } 1562 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1563 return intent; 1564 } 1565 1566 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1567 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1568 } 1569 1570 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1571 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1572 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1573 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1574 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1575 final long ident = Binder.clearCallingIdentity(); 1576 try { 1577 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1578 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1579 } finally { 1580 Binder.restoreCallingIdentity(ident); 1581 } 1582 } 1583 1584 private void sendStickyBroadcast(Intent intent) { 1585 synchronized(this) { 1586 if (!mSystemReady) { 1587 mInitialBroadcast = new Intent(intent); 1588 } 1589 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1590 if (VDBG) { 1591 log("sendStickyBroadcast: action=" + intent.getAction()); 1592 } 1593 1594 Bundle options = null; 1595 final long ident = Binder.clearCallingIdentity(); 1596 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1597 final NetworkInfo ni = intent.getParcelableExtra( 1598 ConnectivityManager.EXTRA_NETWORK_INFO); 1599 if (ni.getType() == ConnectivityManager.TYPE_MOBILE_SUPL) { 1600 intent.setAction(ConnectivityManager.CONNECTIVITY_ACTION_SUPL); 1601 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1602 } else { 1603 BroadcastOptions opts = BroadcastOptions.makeBasic(); 1604 opts.setMaxManifestReceiverApiLevel(Build.VERSION_CODES.M); 1605 options = opts.toBundle(); 1606 } 1607 final IBatteryStats bs = BatteryStatsService.getService(); 1608 try { 1609 bs.noteConnectivityChanged(intent.getIntExtra( 1610 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1611 ni != null ? ni.getState().toString() : "?"); 1612 } catch (RemoteException e) { 1613 } 1614 } 1615 try { 1616 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL, options); 1617 } finally { 1618 Binder.restoreCallingIdentity(ident); 1619 } 1620 } 1621 } 1622 1623 void systemReady() { 1624 loadGlobalProxy(); 1625 1626 synchronized(this) { 1627 mSystemReady = true; 1628 if (mInitialBroadcast != null) { 1629 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1630 mInitialBroadcast = null; 1631 } 1632 } 1633 // load the global proxy at startup 1634 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1635 1636 // Try bringing up tracker, but KeyStore won't be ready yet for secondary users so wait 1637 // for user to unlock device too. 1638 updateLockdownVpn(); 1639 1640 // Configure whether mobile data is always on. 1641 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1642 1643 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1644 1645 mPermissionMonitor.startMonitoring(); 1646 } 1647 1648 /** 1649 * Setup data activity tracking for the given network. 1650 * 1651 * Every {@code setupDataActivityTracking} should be paired with a 1652 * {@link #removeDataActivityTracking} for cleanup. 1653 */ 1654 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1655 final String iface = networkAgent.linkProperties.getInterfaceName(); 1656 1657 final int timeout; 1658 int type = ConnectivityManager.TYPE_NONE; 1659 1660 if (networkAgent.networkCapabilities.hasTransport( 1661 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1662 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1663 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1664 10); 1665 type = ConnectivityManager.TYPE_MOBILE; 1666 } else if (networkAgent.networkCapabilities.hasTransport( 1667 NetworkCapabilities.TRANSPORT_WIFI)) { 1668 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1669 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1670 15); 1671 type = ConnectivityManager.TYPE_WIFI; 1672 } else { 1673 // do not track any other networks 1674 timeout = 0; 1675 } 1676 1677 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1678 try { 1679 mNetd.addIdleTimer(iface, timeout, type); 1680 } catch (Exception e) { 1681 // You shall not crash! 1682 loge("Exception in setupDataActivityTracking " + e); 1683 } 1684 } 1685 } 1686 1687 /** 1688 * Remove data activity tracking when network disconnects. 1689 */ 1690 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1691 final String iface = networkAgent.linkProperties.getInterfaceName(); 1692 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1693 1694 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1695 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1696 try { 1697 // the call fails silently if no idletimer setup for this interface 1698 mNetd.removeIdleTimer(iface); 1699 } catch (Exception e) { 1700 loge("Exception in removeDataActivityTracking " + e); 1701 } 1702 } 1703 } 1704 1705 /** 1706 * Reads the network specific MTU size from reources. 1707 * and set it on it's iface. 1708 */ 1709 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1710 final String iface = newLp.getInterfaceName(); 1711 final int mtu = newLp.getMtu(); 1712 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1713 if (VDBG) log("identical MTU - not setting"); 1714 return; 1715 } 1716 1717 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1718 if (mtu != 0) loge("Unexpected mtu value: " + mtu + ", " + iface); 1719 return; 1720 } 1721 1722 // Cannot set MTU without interface name 1723 if (TextUtils.isEmpty(iface)) { 1724 loge("Setting MTU size with null iface."); 1725 return; 1726 } 1727 1728 try { 1729 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 1730 mNetd.setMtu(iface, mtu); 1731 } catch (Exception e) { 1732 Slog.e(TAG, "exception in setMtu()" + e); 1733 } 1734 } 1735 1736 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1737 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1738 1739 // Overridden for testing purposes to avoid writing to SystemProperties. 1740 @VisibleForTesting 1741 protected int getDefaultTcpRwnd() { 1742 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1743 } 1744 1745 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1746 if (isDefaultNetwork(nai) == false) { 1747 return; 1748 } 1749 1750 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1751 String[] values = null; 1752 if (tcpBufferSizes != null) { 1753 values = tcpBufferSizes.split(","); 1754 } 1755 1756 if (values == null || values.length != 6) { 1757 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1758 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1759 values = tcpBufferSizes.split(","); 1760 } 1761 1762 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1763 1764 try { 1765 if (VDBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1766 1767 final String prefix = "/sys/kernel/ipv4/tcp_"; 1768 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1769 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1770 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1771 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1772 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1773 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1774 mCurrentTcpBufferSizes = tcpBufferSizes; 1775 } catch (IOException e) { 1776 loge("Can't set TCP buffer sizes:" + e); 1777 } 1778 1779 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1780 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1781 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1782 if (rwndValue != 0) { 1783 SystemProperties.set(sysctlKey, rwndValue.toString()); 1784 } 1785 } 1786 1787 private void flushVmDnsCache() { 1788 /* 1789 * Tell the VMs to toss their DNS caches 1790 */ 1791 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1792 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1793 /* 1794 * Connectivity events can happen before boot has completed ... 1795 */ 1796 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1797 final long ident = Binder.clearCallingIdentity(); 1798 try { 1799 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1800 } finally { 1801 Binder.restoreCallingIdentity(ident); 1802 } 1803 } 1804 1805 @Override 1806 public int getRestoreDefaultNetworkDelay(int networkType) { 1807 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1808 NETWORK_RESTORE_DELAY_PROP_NAME); 1809 if(restoreDefaultNetworkDelayStr != null && 1810 restoreDefaultNetworkDelayStr.length() != 0) { 1811 try { 1812 return Integer.parseInt(restoreDefaultNetworkDelayStr); 1813 } catch (NumberFormatException e) { 1814 } 1815 } 1816 // if the system property isn't set, use the value for the apn type 1817 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1818 1819 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1820 (mNetConfigs[networkType] != null)) { 1821 ret = mNetConfigs[networkType].restoreTime; 1822 } 1823 return ret; 1824 } 1825 1826 private boolean argsContain(String[] args, String target) { 1827 for (String arg : args) { 1828 if (arg.equals(target)) return true; 1829 } 1830 return false; 1831 } 1832 1833 private void dumpNetworkDiagnostics(IndentingPrintWriter pw) { 1834 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1835 final long DIAG_TIME_MS = 5000; 1836 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1837 // Start gathering diagnostic information. 1838 netDiags.add(new NetworkDiagnostics( 1839 nai.network, 1840 new LinkProperties(nai.linkProperties), // Must be a copy. 1841 DIAG_TIME_MS)); 1842 } 1843 1844 for (NetworkDiagnostics netDiag : netDiags) { 1845 pw.println(); 1846 netDiag.waitForMeasurements(); 1847 netDiag.dump(pw); 1848 } 1849 } 1850 1851 @Override 1852 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1853 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1854 if (mContext.checkCallingOrSelfPermission( 1855 android.Manifest.permission.DUMP) 1856 != PackageManager.PERMISSION_GRANTED) { 1857 pw.println("Permission Denial: can't dump ConnectivityService " + 1858 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1859 Binder.getCallingUid()); 1860 return; 1861 } 1862 1863 if (argsContain(args, "--diag")) { 1864 dumpNetworkDiagnostics(pw); 1865 return; 1866 } 1867 1868 pw.print("NetworkFactories for:"); 1869 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1870 pw.print(" " + nfi.name); 1871 } 1872 pw.println(); 1873 pw.println(); 1874 1875 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 1876 pw.print("Active default network: "); 1877 if (defaultNai == null) { 1878 pw.println("none"); 1879 } else { 1880 pw.println(defaultNai.network.netId); 1881 } 1882 pw.println(); 1883 1884 pw.println("Current Networks:"); 1885 pw.increaseIndent(); 1886 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1887 pw.println(nai.toString()); 1888 pw.increaseIndent(); 1889 pw.println("Requests:"); 1890 pw.increaseIndent(); 1891 for (int i = 0; i < nai.networkRequests.size(); i++) { 1892 pw.println(nai.networkRequests.valueAt(i).toString()); 1893 } 1894 pw.decreaseIndent(); 1895 pw.println("Lingered:"); 1896 pw.increaseIndent(); 1897 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1898 pw.decreaseIndent(); 1899 pw.decreaseIndent(); 1900 } 1901 pw.decreaseIndent(); 1902 pw.println(); 1903 1904 pw.println("Metered Interfaces:"); 1905 pw.increaseIndent(); 1906 for (String value : mMeteredIfaces) { 1907 pw.println(value); 1908 } 1909 pw.decreaseIndent(); 1910 pw.println(); 1911 1912 pw.print("Restrict background: "); 1913 pw.println(mRestrictBackground); 1914 pw.println(); 1915 1916 pw.println("Status for known UIDs:"); 1917 pw.increaseIndent(); 1918 final int size = mUidRules.size(); 1919 for (int i = 0; i < size; i++) { 1920 final int uid = mUidRules.keyAt(i); 1921 pw.print("UID="); 1922 pw.print(uid); 1923 final int uidRules = mUidRules.get(uid, RULE_NONE); 1924 pw.print(" rules="); 1925 pw.print(uidRulesToString(uidRules)); 1926 pw.println(); 1927 } 1928 pw.println(); 1929 pw.decreaseIndent(); 1930 1931 pw.println("Network Requests:"); 1932 pw.increaseIndent(); 1933 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1934 pw.println(nri.toString()); 1935 } 1936 pw.println(); 1937 pw.decreaseIndent(); 1938 1939 mLegacyTypeTracker.dump(pw); 1940 1941 synchronized (this) { 1942 pw.print("mNetTransitionWakeLock: currently " + 1943 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1944 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1945 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1946 } else { 1947 pw.println(", last requested never"); 1948 } 1949 } 1950 1951 pw.println(); 1952 mTethering.dump(fd, pw, args); 1953 1954 pw.println(); 1955 mKeepaliveTracker.dump(pw); 1956 1957 pw.println(); 1958 1959 if (mInetLog != null && mInetLog.size() > 0) { 1960 pw.println(); 1961 pw.println("Inet condition reports:"); 1962 pw.increaseIndent(); 1963 for(int i = 0; i < mInetLog.size(); i++) { 1964 pw.println(mInetLog.get(i)); 1965 } 1966 pw.decreaseIndent(); 1967 } 1968 1969 if (argsContain(args, "--short") == false) { 1970 pw.println(); 1971 synchronized (mValidationLogs) { 1972 pw.println("mValidationLogs (most recent first):"); 1973 for (ValidationLog p : mValidationLogs) { 1974 pw.println(p.mNetwork + " - " + p.mNetworkExtraInfo); 1975 pw.increaseIndent(); 1976 p.mLog.dump(fd, pw, args); 1977 pw.decreaseIndent(); 1978 } 1979 } 1980 1981 pw.println(); 1982 pw.println("mNetworkRequestInfoLogs (most recent first):"); 1983 pw.increaseIndent(); 1984 mNetworkRequestInfoLogs.reverseDump(fd, pw, args); 1985 pw.decreaseIndent(); 1986 } 1987 } 1988 1989 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, int what) { 1990 if (nai.network == null) return false; 1991 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1992 if (officialNai != null && officialNai.equals(nai)) return true; 1993 if (officialNai != null || VDBG) { 1994 final String msg = sMagicDecoderRing.get(what, Integer.toString(what)); 1995 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1996 " - " + nai); 1997 } 1998 return false; 1999 } 2000 2001 private boolean isRequest(NetworkRequest request) { 2002 return mNetworkRequests.get(request).isRequest(); 2003 } 2004 2005 // must be stateless - things change under us. 2006 private class NetworkStateTrackerHandler extends Handler { 2007 public NetworkStateTrackerHandler(Looper looper) { 2008 super(looper); 2009 } 2010 2011 private boolean maybeHandleAsyncChannelMessage(Message msg) { 2012 switch (msg.what) { 2013 default: 2014 return false; 2015 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 2016 handleAsyncChannelHalfConnect(msg); 2017 break; 2018 } 2019 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 2020 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2021 if (nai != null) nai.asyncChannel.disconnect(); 2022 break; 2023 } 2024 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 2025 handleAsyncChannelDisconnected(msg); 2026 break; 2027 } 2028 } 2029 return true; 2030 } 2031 2032 private void maybeHandleNetworkAgentMessage(Message msg) { 2033 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2034 if (nai == null) { 2035 if (VDBG) { 2036 final String what = sMagicDecoderRing.get(msg.what, Integer.toString(msg.what)); 2037 log(String.format("%s from unknown NetworkAgent", what)); 2038 } 2039 return; 2040 } 2041 2042 switch (msg.what) { 2043 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 2044 final NetworkCapabilities networkCapabilities = (NetworkCapabilities) msg.obj; 2045 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL) || 2046 networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 2047 Slog.wtf(TAG, "BUG: " + nai + " has CS-managed capability."); 2048 } 2049 if (nai.everConnected && !nai.networkCapabilities.equalImmutableCapabilities( 2050 networkCapabilities)) { 2051 Slog.wtf(TAG, "BUG: " + nai + " changed immutable capabilities: " 2052 + nai.networkCapabilities + " -> " + networkCapabilities); 2053 } 2054 updateCapabilities(nai, networkCapabilities); 2055 break; 2056 } 2057 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 2058 if (VDBG) { 2059 log("Update of LinkProperties for " + nai.name() + 2060 "; created=" + nai.created + 2061 "; everConnected=" + nai.everConnected); 2062 } 2063 LinkProperties oldLp = nai.linkProperties; 2064 synchronized (nai) { 2065 nai.linkProperties = (LinkProperties)msg.obj; 2066 } 2067 if (nai.everConnected) updateLinkProperties(nai, oldLp); 2068 break; 2069 } 2070 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 2071 NetworkInfo info = (NetworkInfo) msg.obj; 2072 updateNetworkInfo(nai, info); 2073 break; 2074 } 2075 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 2076 Integer score = (Integer) msg.obj; 2077 if (score != null) updateNetworkScore(nai, score.intValue()); 2078 break; 2079 } 2080 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 2081 try { 2082 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2083 } catch (Exception e) { 2084 // Never crash! 2085 loge("Exception in addVpnUidRanges: " + e); 2086 } 2087 break; 2088 } 2089 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 2090 try { 2091 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2092 } catch (Exception e) { 2093 // Never crash! 2094 loge("Exception in removeVpnUidRanges: " + e); 2095 } 2096 break; 2097 } 2098 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 2099 if (nai.everConnected && !nai.networkMisc.explicitlySelected) { 2100 loge("ERROR: already-connected network explicitly selected."); 2101 } 2102 nai.networkMisc.explicitlySelected = true; 2103 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 2104 break; 2105 } 2106 case NetworkAgent.EVENT_PACKET_KEEPALIVE: { 2107 mKeepaliveTracker.handleEventPacketKeepalive(nai, msg); 2108 break; 2109 } 2110 } 2111 } 2112 2113 private boolean maybeHandleNetworkMonitorMessage(Message msg) { 2114 switch (msg.what) { 2115 default: 2116 return false; 2117 case NetworkMonitor.EVENT_NETWORK_TESTED: { 2118 final NetworkAgentInfo nai; 2119 synchronized (mNetworkForNetId) { 2120 nai = mNetworkForNetId.get(msg.arg2); 2121 } 2122 if (nai != null) { 2123 final boolean valid = 2124 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2125 if (DBG) log(nai.name() + " validation " + (valid ? "passed" : "failed") + 2126 (msg.obj == null ? "" : " with redirect to " + (String)msg.obj)); 2127 if (valid != nai.lastValidated) { 2128 final int oldScore = nai.getCurrentScore(); 2129 nai.lastValidated = valid; 2130 nai.everValidated |= valid; 2131 updateCapabilities(nai, nai.networkCapabilities); 2132 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2133 if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); 2134 } 2135 updateInetCondition(nai); 2136 // Let the NetworkAgent know the state of its network 2137 Bundle redirectUrlBundle = new Bundle(); 2138 redirectUrlBundle.putString(NetworkAgent.REDIRECT_URL_KEY, (String)msg.obj); 2139 nai.asyncChannel.sendMessage( 2140 NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2141 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2142 0, redirectUrlBundle); 2143 } 2144 break; 2145 } 2146 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2147 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2148 if (isLiveNetworkAgent(nai, msg.what)) { 2149 handleLingerComplete(nai); 2150 } 2151 break; 2152 } 2153 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2154 final int netId = msg.arg2; 2155 final boolean visible = (msg.arg1 != 0); 2156 final NetworkAgentInfo nai; 2157 synchronized (mNetworkForNetId) { 2158 nai = mNetworkForNetId.get(netId); 2159 } 2160 // If captive portal status has changed, update capabilities. 2161 if (nai != null && (visible != nai.lastCaptivePortalDetected)) { 2162 nai.lastCaptivePortalDetected = visible; 2163 nai.everCaptivePortalDetected |= visible; 2164 updateCapabilities(nai, nai.networkCapabilities); 2165 } 2166 if (!visible) { 2167 setProvNotificationVisibleIntent(false, netId, null, 0, null, null, false); 2168 } else { 2169 if (nai == null) { 2170 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2171 break; 2172 } 2173 if (!nai.networkMisc.provisioningNotificationDisabled) { 2174 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2175 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), 2176 (PendingIntent)msg.obj, nai.networkMisc.explicitlySelected); 2177 } 2178 } 2179 break; 2180 } 2181 } 2182 return true; 2183 } 2184 2185 @Override 2186 public void handleMessage(Message msg) { 2187 if (!maybeHandleAsyncChannelMessage(msg) && !maybeHandleNetworkMonitorMessage(msg)) { 2188 maybeHandleNetworkAgentMessage(msg); 2189 } 2190 } 2191 } 2192 2193 private void linger(NetworkAgentInfo nai) { 2194 nai.lingering = true; 2195 NetworkEvent.logEvent(nai.network.netId, NetworkEvent.NETWORK_LINGER); 2196 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 2197 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 2198 } 2199 2200 // Cancel any lingering so the linger timeout doesn't teardown a network. 2201 // This should be called when a network begins satisfying a NetworkRequest. 2202 // Note: depending on what state the NetworkMonitor is in (e.g., 2203 // if it's awaiting captive portal login, or if validation failed), this 2204 // may trigger a re-evaluation of the network. 2205 private void unlinger(NetworkAgentInfo nai) { 2206 nai.networkLingered.clear(); 2207 if (!nai.lingering) return; 2208 nai.lingering = false; 2209 NetworkEvent.logEvent(nai.network.netId, NetworkEvent.NETWORK_UNLINGER); 2210 if (VDBG) log("Canceling linger of " + nai.name()); 2211 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2212 } 2213 2214 private void handleAsyncChannelHalfConnect(Message msg) { 2215 AsyncChannel ac = (AsyncChannel) msg.obj; 2216 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2217 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2218 if (VDBG) log("NetworkFactory connected"); 2219 // A network factory has connected. Send it all current NetworkRequests. 2220 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2221 if (!nri.isRequest()) continue; 2222 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2223 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2224 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2225 } 2226 } else { 2227 loge("Error connecting NetworkFactory"); 2228 mNetworkFactoryInfos.remove(msg.obj); 2229 } 2230 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2231 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2232 if (VDBG) log("NetworkAgent connected"); 2233 // A network agent has requested a connection. Establish the connection. 2234 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2235 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2236 } else { 2237 loge("Error connecting NetworkAgent"); 2238 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2239 if (nai != null) { 2240 final boolean wasDefault = isDefaultNetwork(nai); 2241 synchronized (mNetworkForNetId) { 2242 mNetworkForNetId.remove(nai.network.netId); 2243 mNetIdInUse.delete(nai.network.netId); 2244 } 2245 // Just in case. 2246 mLegacyTypeTracker.remove(nai, wasDefault); 2247 } 2248 } 2249 } 2250 } 2251 2252 private void handleAsyncChannelDisconnected(Message msg) { 2253 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2254 if (nai != null) { 2255 if (DBG) { 2256 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2257 } 2258 // A network agent has disconnected. 2259 // TODO - if we move the logic to the network agent (have them disconnect 2260 // because they lost all their requests or because their score isn't good) 2261 // then they would disconnect organically, report their new state and then 2262 // disconnect the channel. 2263 if (nai.networkInfo.isConnected()) { 2264 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2265 null, null); 2266 } 2267 final boolean wasDefault = isDefaultNetwork(nai); 2268 if (wasDefault) { 2269 mDefaultInetConditionPublished = 0; 2270 // Log default network disconnection before required book-keeping. 2271 // Let rematchAllNetworksAndRequests() below record a new default network event 2272 // if there is a fallback. Taken together, the two form a X -> 0, 0 -> Y sequence 2273 // whose timestamps tell how long it takes to recover a default network. 2274 logDefaultNetworkEvent(null, nai); 2275 } 2276 notifyIfacesChangedForNetworkStats(); 2277 // TODO - we shouldn't send CALLBACK_LOST to requests that can be satisfied 2278 // by other networks that are already connected. Perhaps that can be done by 2279 // sending all CALLBACK_LOST messages (for requests, not listens) at the end 2280 // of rematchAllNetworksAndRequests 2281 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2282 mKeepaliveTracker.handleStopAllKeepalives(nai, 2283 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 2284 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2285 mNetworkAgentInfos.remove(msg.replyTo); 2286 updateClat(null, nai.linkProperties, nai); 2287 synchronized (mNetworkForNetId) { 2288 // Remove the NetworkAgent, but don't mark the netId as 2289 // available until we've told netd to delete it below. 2290 mNetworkForNetId.remove(nai.network.netId); 2291 } 2292 // Remove all previously satisfied requests. 2293 for (int i = 0; i < nai.networkRequests.size(); i++) { 2294 NetworkRequest request = nai.networkRequests.valueAt(i); 2295 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2296 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2297 mNetworkForRequestId.remove(request.requestId); 2298 sendUpdatedScoreToFactories(request, 0); 2299 } 2300 } 2301 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2302 removeDataActivityTracking(nai); 2303 notifyLockdownVpn(nai); 2304 requestNetworkTransitionWakelock(nai.name()); 2305 } 2306 mLegacyTypeTracker.remove(nai, wasDefault); 2307 rematchAllNetworksAndRequests(null, 0); 2308 if (nai.created) { 2309 // Tell netd to clean up the configuration for this network 2310 // (routing rules, DNS, etc). 2311 // This may be slow as it requires a lot of netd shelling out to ip and 2312 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2313 // after we've rematched networks with requests which should make a potential 2314 // fallback network the default or requested a new network from the 2315 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2316 // long time. 2317 try { 2318 mNetd.removeNetwork(nai.network.netId); 2319 } catch (Exception e) { 2320 loge("Exception removing network: " + e); 2321 } 2322 } 2323 synchronized (mNetworkForNetId) { 2324 mNetIdInUse.delete(nai.network.netId); 2325 } 2326 } else { 2327 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2328 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2329 } 2330 } 2331 2332 // If this method proves to be too slow then we can maintain a separate 2333 // pendingIntent => NetworkRequestInfo map. 2334 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2335 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2336 Intent intent = pendingIntent.getIntent(); 2337 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2338 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2339 if (existingPendingIntent != null && 2340 existingPendingIntent.getIntent().filterEquals(intent)) { 2341 return entry.getValue(); 2342 } 2343 } 2344 return null; 2345 } 2346 2347 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2348 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2349 2350 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2351 if (existingRequest != null) { // remove the existing request. 2352 if (DBG) log("Replacing " + existingRequest.request + " with " 2353 + nri.request + " because their intents matched."); 2354 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2355 } 2356 handleRegisterNetworkRequest(nri); 2357 } 2358 2359 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2360 mNetworkRequests.put(nri.request, nri); 2361 mNetworkRequestInfoLogs.log("REGISTER " + nri); 2362 if (!nri.isRequest()) { 2363 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2364 if (nri.request.networkCapabilities.hasSignalStrength() && 2365 network.satisfiesImmutableCapabilitiesOf(nri.request)) { 2366 updateSignalStrengthThresholds(network, "REGISTER", nri.request); 2367 } 2368 } 2369 } 2370 rematchAllNetworksAndRequests(null, 0); 2371 if (nri.isRequest() && mNetworkForRequestId.get(nri.request.requestId) == null) { 2372 sendUpdatedScoreToFactories(nri.request, 0); 2373 } 2374 } 2375 2376 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2377 int callingUid) { 2378 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2379 if (nri != null) { 2380 handleReleaseNetworkRequest(nri.request, callingUid); 2381 } 2382 } 2383 2384 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2385 // This is whether it is satisfying any NetworkRequests or were it to become validated, 2386 // would it have a chance of satisfying any NetworkRequests. 2387 private boolean unneeded(NetworkAgentInfo nai) { 2388 if (!nai.everConnected || nai.isVPN() || nai.lingering) return false; 2389 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2390 // If this Network is already the highest scoring Network for a request, or if 2391 // there is hope for it to become one if it validated, then it is needed. 2392 if (nri.isRequest() && nai.satisfies(nri.request) && 2393 (nai.networkRequests.get(nri.request.requestId) != null || 2394 // Note that this catches two important cases: 2395 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2396 // is currently satisfying the request. This is desirable when 2397 // cellular ends up validating but WiFi does not. 2398 // 2. Unvalidated WiFi will not be reaped when validated cellular 2399 // is currently satisfying the request. This is desirable when 2400 // WiFi ends up validating and out scoring cellular. 2401 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2402 nai.getCurrentScoreAsValidated())) { 2403 return false; 2404 } 2405 } 2406 return true; 2407 } 2408 2409 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2410 NetworkRequestInfo nri = mNetworkRequests.get(request); 2411 if (nri != null) { 2412 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2413 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2414 return; 2415 } 2416 if (VDBG || (DBG && nri.isRequest())) log("releasing NetworkRequest " + request); 2417 nri.unlinkDeathRecipient(); 2418 mNetworkRequests.remove(request); 2419 synchronized (mUidToNetworkRequestCount) { 2420 int requests = mUidToNetworkRequestCount.get(nri.mUid, 0); 2421 if (requests < 1) { 2422 Slog.wtf(TAG, "BUG: too small request count " + requests + " for UID " + 2423 nri.mUid); 2424 } else if (requests == 1) { 2425 mUidToNetworkRequestCount.removeAt( 2426 mUidToNetworkRequestCount.indexOfKey(nri.mUid)); 2427 } else { 2428 mUidToNetworkRequestCount.put(nri.mUid, requests - 1); 2429 } 2430 } 2431 mNetworkRequestInfoLogs.log("RELEASE " + nri); 2432 if (nri.isRequest()) { 2433 // Find all networks that are satisfying this request and remove the request 2434 // from their request lists. 2435 // TODO - it's my understanding that for a request there is only a single 2436 // network satisfying it, so this loop is wasteful 2437 boolean wasKept = false; 2438 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2439 if (nai.networkRequests.get(nri.request.requestId) != null) { 2440 nai.networkRequests.remove(nri.request.requestId); 2441 if (VDBG) { 2442 log(" Removing from current network " + nai.name() + 2443 ", leaving " + nai.networkRequests.size() + 2444 " requests."); 2445 } 2446 if (unneeded(nai)) { 2447 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2448 teardownUnneededNetwork(nai); 2449 } else { 2450 // suspect there should only be one pass through here 2451 // but if any were kept do the check below 2452 wasKept |= true; 2453 } 2454 } 2455 } 2456 2457 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2458 if (nai != null) { 2459 mNetworkForRequestId.remove(nri.request.requestId); 2460 } 2461 // Maintain the illusion. When this request arrived, we might have pretended 2462 // that a network connected to serve it, even though the network was already 2463 // connected. Now that this request has gone away, we might have to pretend 2464 // that the network disconnected. LegacyTypeTracker will generate that 2465 // phantom disconnect for this type. 2466 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2467 boolean doRemove = true; 2468 if (wasKept) { 2469 // check if any of the remaining requests for this network are for the 2470 // same legacy type - if so, don't remove the nai 2471 for (int i = 0; i < nai.networkRequests.size(); i++) { 2472 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2473 if (otherRequest.legacyType == nri.request.legacyType && 2474 isRequest(otherRequest)) { 2475 if (DBG) log(" still have other legacy request - leaving"); 2476 doRemove = false; 2477 } 2478 } 2479 } 2480 2481 if (doRemove) { 2482 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2483 } 2484 } 2485 2486 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2487 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2488 nri.request); 2489 } 2490 } else { 2491 // listens don't have a singular affectedNetwork. Check all networks to see 2492 // if this listen request applies and remove it. 2493 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2494 nai.networkRequests.remove(nri.request.requestId); 2495 if (nri.request.networkCapabilities.hasSignalStrength() && 2496 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 2497 updateSignalStrengthThresholds(nai, "RELEASE", nri.request); 2498 } 2499 } 2500 } 2501 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2502 } 2503 } 2504 2505 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2506 enforceConnectivityInternalPermission(); 2507 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2508 accept ? 1 : 0, always ? 1: 0, network)); 2509 } 2510 2511 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2512 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2513 " accept=" + accept + " always=" + always); 2514 2515 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2516 if (nai == null) { 2517 // Nothing to do. 2518 return; 2519 } 2520 2521 if (nai.everValidated) { 2522 // The network validated while the dialog box was up. Take no action. 2523 return; 2524 } 2525 2526 if (!nai.networkMisc.explicitlySelected) { 2527 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2528 } 2529 2530 if (accept != nai.networkMisc.acceptUnvalidated) { 2531 int oldScore = nai.getCurrentScore(); 2532 nai.networkMisc.acceptUnvalidated = accept; 2533 rematchAllNetworksAndRequests(nai, oldScore); 2534 sendUpdatedScoreToFactories(nai); 2535 } 2536 2537 if (always) { 2538 nai.asyncChannel.sendMessage( 2539 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2540 } 2541 2542 if (!accept) { 2543 // Tell the NetworkAgent to not automatically reconnect to the network. 2544 nai.asyncChannel.sendMessage(NetworkAgent.CMD_PREVENT_AUTOMATIC_RECONNECT); 2545 // Teardown the nework. 2546 teardownUnneededNetwork(nai); 2547 } 2548 2549 } 2550 2551 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2552 if (VDBG) log("scheduleUnvalidatedPrompt " + nai.network); 2553 mHandler.sendMessageDelayed( 2554 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2555 PROMPT_UNVALIDATED_DELAY_MS); 2556 } 2557 2558 private void handlePromptUnvalidated(Network network) { 2559 if (VDBG) log("handlePromptUnvalidated " + network); 2560 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2561 2562 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2563 // we haven't already been told to switch to it regardless of whether it validated or not. 2564 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2565 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2566 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2567 return; 2568 } 2569 2570 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2571 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2572 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2573 intent.setClassName("com.android.settings", 2574 "com.android.settings.wifi.WifiNoInternetDialog"); 2575 2576 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2577 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2578 2579 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2580 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent, true); 2581 } 2582 2583 private class InternalHandler extends Handler { 2584 public InternalHandler(Looper looper) { 2585 super(looper); 2586 } 2587 2588 @Override 2589 public void handleMessage(Message msg) { 2590 switch (msg.what) { 2591 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2592 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2593 String causedBy = null; 2594 synchronized (ConnectivityService.this) { 2595 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2596 mNetTransitionWakeLock.isHeld()) { 2597 mNetTransitionWakeLock.release(); 2598 causedBy = mNetTransitionWakeLockCausedBy; 2599 } else { 2600 break; 2601 } 2602 } 2603 if (VDBG) { 2604 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2605 log("Failed to find a new network - expiring NetTransition Wakelock"); 2606 } else { 2607 log("NetTransition Wakelock (" + 2608 (causedBy == null ? "unknown" : causedBy) + 2609 " cleared because we found a replacement network"); 2610 } 2611 } 2612 break; 2613 } 2614 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2615 handleDeprecatedGlobalHttpProxy(); 2616 break; 2617 } 2618 case EVENT_PROXY_HAS_CHANGED: { 2619 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2620 break; 2621 } 2622 case EVENT_REGISTER_NETWORK_FACTORY: { 2623 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2624 break; 2625 } 2626 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2627 handleUnregisterNetworkFactory((Messenger)msg.obj); 2628 break; 2629 } 2630 case EVENT_REGISTER_NETWORK_AGENT: { 2631 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2632 break; 2633 } 2634 case EVENT_REGISTER_NETWORK_REQUEST: 2635 case EVENT_REGISTER_NETWORK_LISTENER: { 2636 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2637 break; 2638 } 2639 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2640 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2641 handleRegisterNetworkRequestWithIntent(msg); 2642 break; 2643 } 2644 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2645 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2646 break; 2647 } 2648 case EVENT_RELEASE_NETWORK_REQUEST: { 2649 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2650 break; 2651 } 2652 case EVENT_SET_ACCEPT_UNVALIDATED: { 2653 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2654 break; 2655 } 2656 case EVENT_PROMPT_UNVALIDATED: { 2657 handlePromptUnvalidated((Network) msg.obj); 2658 break; 2659 } 2660 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2661 handleMobileDataAlwaysOn(); 2662 break; 2663 } 2664 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2665 case NetworkAgent.CMD_START_PACKET_KEEPALIVE: { 2666 mKeepaliveTracker.handleStartKeepalive(msg); 2667 break; 2668 } 2669 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2670 case NetworkAgent.CMD_STOP_PACKET_KEEPALIVE: { 2671 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork((Network) msg.obj); 2672 int slot = msg.arg1; 2673 int reason = msg.arg2; 2674 mKeepaliveTracker.handleStopKeepalive(nai, slot, reason); 2675 break; 2676 } 2677 case EVENT_SYSTEM_READY: { 2678 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2679 nai.networkMonitor.systemReady = true; 2680 } 2681 break; 2682 } 2683 } 2684 } 2685 } 2686 2687 // javadoc from interface 2688 public int tether(String iface) { 2689 ConnectivityManager.enforceTetherChangePermission(mContext); 2690 if (isTetheringSupported()) { 2691 final int status = mTethering.tether(iface); 2692 if (status == ConnectivityManager.TETHER_ERROR_NO_ERROR) { 2693 try { 2694 mPolicyManager.onTetheringChanged(iface, true); 2695 } catch (RemoteException e) { 2696 } 2697 } 2698 return status; 2699 } else { 2700 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2701 } 2702 } 2703 2704 // javadoc from interface 2705 public int untether(String iface) { 2706 ConnectivityManager.enforceTetherChangePermission(mContext); 2707 2708 if (isTetheringSupported()) { 2709 final int status = mTethering.untether(iface); 2710 if (status == ConnectivityManager.TETHER_ERROR_NO_ERROR) { 2711 try { 2712 mPolicyManager.onTetheringChanged(iface, false); 2713 } catch (RemoteException e) { 2714 } 2715 } 2716 return status; 2717 } else { 2718 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2719 } 2720 } 2721 2722 // javadoc from interface 2723 public int getLastTetherError(String iface) { 2724 enforceTetherAccessPermission(); 2725 2726 if (isTetheringSupported()) { 2727 return mTethering.getLastTetherError(iface); 2728 } else { 2729 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2730 } 2731 } 2732 2733 // TODO - proper iface API for selection by property, inspection, etc 2734 public String[] getTetherableUsbRegexs() { 2735 enforceTetherAccessPermission(); 2736 if (isTetheringSupported()) { 2737 return mTethering.getTetherableUsbRegexs(); 2738 } else { 2739 return new String[0]; 2740 } 2741 } 2742 2743 public String[] getTetherableWifiRegexs() { 2744 enforceTetherAccessPermission(); 2745 if (isTetheringSupported()) { 2746 return mTethering.getTetherableWifiRegexs(); 2747 } else { 2748 return new String[0]; 2749 } 2750 } 2751 2752 public String[] getTetherableBluetoothRegexs() { 2753 enforceTetherAccessPermission(); 2754 if (isTetheringSupported()) { 2755 return mTethering.getTetherableBluetoothRegexs(); 2756 } else { 2757 return new String[0]; 2758 } 2759 } 2760 2761 public int setUsbTethering(boolean enable) { 2762 ConnectivityManager.enforceTetherChangePermission(mContext); 2763 if (isTetheringSupported()) { 2764 return mTethering.setUsbTethering(enable); 2765 } else { 2766 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2767 } 2768 } 2769 2770 // TODO - move iface listing, queries, etc to new module 2771 // javadoc from interface 2772 public String[] getTetherableIfaces() { 2773 enforceTetherAccessPermission(); 2774 return mTethering.getTetherableIfaces(); 2775 } 2776 2777 public String[] getTetheredIfaces() { 2778 enforceTetherAccessPermission(); 2779 return mTethering.getTetheredIfaces(); 2780 } 2781 2782 public String[] getTetheringErroredIfaces() { 2783 enforceTetherAccessPermission(); 2784 return mTethering.getErroredIfaces(); 2785 } 2786 2787 public String[] getTetheredDhcpRanges() { 2788 enforceConnectivityInternalPermission(); 2789 return mTethering.getTetheredDhcpRanges(); 2790 } 2791 2792 // if ro.tether.denied = true we default to no tethering 2793 // gservices could set the secure setting to 1 though to enable it on a build where it 2794 // had previously been turned off. 2795 @Override 2796 public boolean isTetheringSupported() { 2797 enforceTetherAccessPermission(); 2798 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2799 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2800 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2801 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2802 return tetherEnabledInSettings && mUserManager.isAdminUser() && 2803 ((mTethering.getTetherableUsbRegexs().length != 0 || 2804 mTethering.getTetherableWifiRegexs().length != 0 || 2805 mTethering.getTetherableBluetoothRegexs().length != 0) && 2806 mTethering.getUpstreamIfaceTypes().length != 0); 2807 } 2808 2809 @Override 2810 public void startTethering(int type, ResultReceiver receiver, 2811 boolean showProvisioningUi) { 2812 ConnectivityManager.enforceTetherChangePermission(mContext); 2813 if (!isTetheringSupported()) { 2814 receiver.send(ConnectivityManager.TETHER_ERROR_UNSUPPORTED, null); 2815 return; 2816 } 2817 mTethering.startTethering(type, receiver, showProvisioningUi); 2818 } 2819 2820 @Override 2821 public void stopTethering(int type) { 2822 ConnectivityManager.enforceTetherChangePermission(mContext); 2823 mTethering.stopTethering(type); 2824 } 2825 2826 // Called when we lose the default network and have no replacement yet. 2827 // This will automatically be cleared after X seconds or a new default network 2828 // becomes CONNECTED, whichever happens first. The timer is started by the 2829 // first caller and not restarted by subsequent callers. 2830 private void requestNetworkTransitionWakelock(String forWhom) { 2831 int serialNum = 0; 2832 synchronized (this) { 2833 if (mNetTransitionWakeLock.isHeld()) return; 2834 serialNum = ++mNetTransitionWakeLockSerialNumber; 2835 mNetTransitionWakeLock.acquire(); 2836 mNetTransitionWakeLockCausedBy = forWhom; 2837 } 2838 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2839 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2840 mNetTransitionWakeLockTimeout); 2841 return; 2842 } 2843 2844 // 100 percent is full good, 0 is full bad. 2845 public void reportInetCondition(int networkType, int percentage) { 2846 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2847 if (nai == null) return; 2848 reportNetworkConnectivity(nai.network, percentage > 50); 2849 } 2850 2851 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2852 enforceAccessPermission(); 2853 enforceInternetPermission(); 2854 2855 NetworkAgentInfo nai; 2856 if (network == null) { 2857 nai = getDefaultNetwork(); 2858 } else { 2859 nai = getNetworkAgentInfoForNetwork(network); 2860 } 2861 if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || 2862 nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { 2863 return; 2864 } 2865 // Revalidate if the app report does not match our current validated state. 2866 if (hasConnectivity == nai.lastValidated) return; 2867 final int uid = Binder.getCallingUid(); 2868 if (DBG) { 2869 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2870 ") by " + uid); 2871 } 2872 synchronized (nai) { 2873 // Validating a network that has not yet connected could result in a call to 2874 // rematchNetworkAndRequests() which is not meant to work on such networks. 2875 if (!nai.everConnected) return; 2876 2877 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid, false)) return; 2878 2879 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2880 } 2881 } 2882 2883 private ProxyInfo getDefaultProxy() { 2884 // this information is already available as a world read/writable jvm property 2885 // so this API change wouldn't have a benifit. It also breaks the passing 2886 // of proxy info to all the JVMs. 2887 // enforceAccessPermission(); 2888 synchronized (mProxyLock) { 2889 ProxyInfo ret = mGlobalProxy; 2890 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2891 return ret; 2892 } 2893 } 2894 2895 public ProxyInfo getProxyForNetwork(Network network) { 2896 if (network == null) return getDefaultProxy(); 2897 final ProxyInfo globalProxy = getGlobalProxy(); 2898 if (globalProxy != null) return globalProxy; 2899 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2900 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2901 // caller may not have. 2902 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2903 if (nai == null) return null; 2904 synchronized (nai) { 2905 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2906 if (proxyInfo == null) return null; 2907 return new ProxyInfo(proxyInfo); 2908 } 2909 } 2910 2911 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2912 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2913 // proxy is null then there is no proxy in place). 2914 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2915 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2916 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2917 proxy = null; 2918 } 2919 return proxy; 2920 } 2921 2922 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2923 // better for determining if a new proxy broadcast is necessary: 2924 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2925 // avoid unnecessary broadcasts. 2926 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2927 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2928 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2929 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2930 // all set. 2931 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2932 a = canonicalizeProxyInfo(a); 2933 b = canonicalizeProxyInfo(b); 2934 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2935 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2936 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2937 } 2938 2939 public void setGlobalProxy(ProxyInfo proxyProperties) { 2940 enforceConnectivityInternalPermission(); 2941 2942 synchronized (mProxyLock) { 2943 if (proxyProperties == mGlobalProxy) return; 2944 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2945 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2946 2947 String host = ""; 2948 int port = 0; 2949 String exclList = ""; 2950 String pacFileUrl = ""; 2951 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2952 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2953 if (!proxyProperties.isValid()) { 2954 if (DBG) 2955 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2956 return; 2957 } 2958 mGlobalProxy = new ProxyInfo(proxyProperties); 2959 host = mGlobalProxy.getHost(); 2960 port = mGlobalProxy.getPort(); 2961 exclList = mGlobalProxy.getExclusionListAsString(); 2962 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2963 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2964 } 2965 } else { 2966 mGlobalProxy = null; 2967 } 2968 ContentResolver res = mContext.getContentResolver(); 2969 final long token = Binder.clearCallingIdentity(); 2970 try { 2971 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2972 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2973 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2974 exclList); 2975 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2976 } finally { 2977 Binder.restoreCallingIdentity(token); 2978 } 2979 2980 if (mGlobalProxy == null) { 2981 proxyProperties = mDefaultProxy; 2982 } 2983 sendProxyBroadcast(proxyProperties); 2984 } 2985 } 2986 2987 private void loadGlobalProxy() { 2988 ContentResolver res = mContext.getContentResolver(); 2989 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2990 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2991 String exclList = Settings.Global.getString(res, 2992 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2993 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2994 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2995 ProxyInfo proxyProperties; 2996 if (!TextUtils.isEmpty(pacFileUrl)) { 2997 proxyProperties = new ProxyInfo(pacFileUrl); 2998 } else { 2999 proxyProperties = new ProxyInfo(host, port, exclList); 3000 } 3001 if (!proxyProperties.isValid()) { 3002 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3003 return; 3004 } 3005 3006 synchronized (mProxyLock) { 3007 mGlobalProxy = proxyProperties; 3008 } 3009 } 3010 } 3011 3012 public ProxyInfo getGlobalProxy() { 3013 // this information is already available as a world read/writable jvm property 3014 // so this API change wouldn't have a benifit. It also breaks the passing 3015 // of proxy info to all the JVMs. 3016 // enforceAccessPermission(); 3017 synchronized (mProxyLock) { 3018 return mGlobalProxy; 3019 } 3020 } 3021 3022 private void handleApplyDefaultProxy(ProxyInfo proxy) { 3023 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3024 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 3025 proxy = null; 3026 } 3027 synchronized (mProxyLock) { 3028 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3029 if (mDefaultProxy == proxy) return; // catches repeated nulls 3030 if (proxy != null && !proxy.isValid()) { 3031 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3032 return; 3033 } 3034 3035 // This call could be coming from the PacManager, containing the port of the local 3036 // proxy. If this new proxy matches the global proxy then copy this proxy to the 3037 // global (to get the correct local port), and send a broadcast. 3038 // TODO: Switch PacManager to have its own message to send back rather than 3039 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 3040 if ((mGlobalProxy != null) && (proxy != null) 3041 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 3042 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 3043 mGlobalProxy = proxy; 3044 sendProxyBroadcast(mGlobalProxy); 3045 return; 3046 } 3047 mDefaultProxy = proxy; 3048 3049 if (mGlobalProxy != null) return; 3050 if (!mDefaultProxyDisabled) { 3051 sendProxyBroadcast(proxy); 3052 } 3053 } 3054 } 3055 3056 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 3057 // This method gets called when any network changes proxy, but the broadcast only ever contains 3058 // the default proxy (even if it hasn't changed). 3059 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 3060 // world where an app might be bound to a non-default network. 3061 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3062 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 3063 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 3064 3065 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 3066 sendProxyBroadcast(getDefaultProxy()); 3067 } 3068 } 3069 3070 private void handleDeprecatedGlobalHttpProxy() { 3071 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3072 Settings.Global.HTTP_PROXY); 3073 if (!TextUtils.isEmpty(proxy)) { 3074 String data[] = proxy.split(":"); 3075 if (data.length == 0) { 3076 return; 3077 } 3078 3079 String proxyHost = data[0]; 3080 int proxyPort = 8080; 3081 if (data.length > 1) { 3082 try { 3083 proxyPort = Integer.parseInt(data[1]); 3084 } catch (NumberFormatException e) { 3085 return; 3086 } 3087 } 3088 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 3089 setGlobalProxy(p); 3090 } 3091 } 3092 3093 private void sendProxyBroadcast(ProxyInfo proxy) { 3094 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 3095 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3096 if (DBG) log("sending Proxy Broadcast for " + proxy); 3097 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3098 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3099 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3100 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3101 final long ident = Binder.clearCallingIdentity(); 3102 try { 3103 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3104 } finally { 3105 Binder.restoreCallingIdentity(ident); 3106 } 3107 } 3108 3109 private static class SettingsObserver extends ContentObserver { 3110 final private HashMap<Uri, Integer> mUriEventMap; 3111 final private Context mContext; 3112 final private Handler mHandler; 3113 3114 SettingsObserver(Context context, Handler handler) { 3115 super(null); 3116 mUriEventMap = new HashMap<Uri, Integer>(); 3117 mContext = context; 3118 mHandler = handler; 3119 } 3120 3121 void observe(Uri uri, int what) { 3122 mUriEventMap.put(uri, what); 3123 final ContentResolver resolver = mContext.getContentResolver(); 3124 resolver.registerContentObserver(uri, false, this); 3125 } 3126 3127 @Override 3128 public void onChange(boolean selfChange) { 3129 Slog.wtf(TAG, "Should never be reached."); 3130 } 3131 3132 @Override 3133 public void onChange(boolean selfChange, Uri uri) { 3134 final Integer what = mUriEventMap.get(uri); 3135 if (what != null) { 3136 mHandler.obtainMessage(what.intValue()).sendToTarget(); 3137 } else { 3138 loge("No matching event to send for URI=" + uri); 3139 } 3140 } 3141 } 3142 3143 private static void log(String s) { 3144 Slog.d(TAG, s); 3145 } 3146 3147 private static void loge(String s) { 3148 Slog.e(TAG, s); 3149 } 3150 3151 private static <T> T checkNotNull(T value, String message) { 3152 if (value == null) { 3153 throw new NullPointerException(message); 3154 } 3155 return value; 3156 } 3157 3158 /** 3159 * Prepare for a VPN application. 3160 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3161 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3162 * 3163 * @param oldPackage Package name of the application which currently controls VPN, which will 3164 * be replaced. If there is no such application, this should should either be 3165 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3166 * @param newPackage Package name of the application which should gain control of VPN, or 3167 * {@code null} to disable. 3168 * @param userId User for whom to prepare the new VPN. 3169 * 3170 * @hide 3171 */ 3172 @Override 3173 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3174 int userId) { 3175 enforceCrossUserPermission(userId); 3176 throwIfLockdownEnabled(); 3177 3178 synchronized(mVpns) { 3179 Vpn vpn = mVpns.get(userId); 3180 if (vpn != null) { 3181 return vpn.prepare(oldPackage, newPackage); 3182 } else { 3183 return false; 3184 } 3185 } 3186 } 3187 3188 /** 3189 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3190 * This method is used by system-privileged apps. 3191 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3192 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3193 * 3194 * @param packageName The package for which authorization state should change. 3195 * @param userId User for whom {@code packageName} is installed. 3196 * @param authorized {@code true} if this app should be able to start a VPN connection without 3197 * explicit user approval, {@code false} if not. 3198 * 3199 * @hide 3200 */ 3201 @Override 3202 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3203 enforceCrossUserPermission(userId); 3204 3205 synchronized(mVpns) { 3206 Vpn vpn = mVpns.get(userId); 3207 if (vpn != null) { 3208 vpn.setPackageAuthorization(packageName, authorized); 3209 } 3210 } 3211 } 3212 3213 /** 3214 * Configure a TUN interface and return its file descriptor. Parameters 3215 * are encoded and opaque to this class. This method is used by VpnBuilder 3216 * and not available in ConnectivityManager. Permissions are checked in 3217 * Vpn class. 3218 * @hide 3219 */ 3220 @Override 3221 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3222 throwIfLockdownEnabled(); 3223 int user = UserHandle.getUserId(Binder.getCallingUid()); 3224 synchronized(mVpns) { 3225 return mVpns.get(user).establish(config); 3226 } 3227 } 3228 3229 /** 3230 * Start legacy VPN, controlling native daemons as needed. Creates a 3231 * secondary thread to perform connection work, returning quickly. 3232 */ 3233 @Override 3234 public void startLegacyVpn(VpnProfile profile) { 3235 throwIfLockdownEnabled(); 3236 final LinkProperties egress = getActiveLinkProperties(); 3237 if (egress == null) { 3238 throw new IllegalStateException("Missing active network connection"); 3239 } 3240 int user = UserHandle.getUserId(Binder.getCallingUid()); 3241 synchronized(mVpns) { 3242 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3243 } 3244 } 3245 3246 /** 3247 * Return the information of the ongoing legacy VPN. This method is used 3248 * by VpnSettings and not available in ConnectivityManager. Permissions 3249 * are checked in Vpn class. 3250 */ 3251 @Override 3252 public LegacyVpnInfo getLegacyVpnInfo(int userId) { 3253 enforceCrossUserPermission(userId); 3254 3255 synchronized(mVpns) { 3256 return mVpns.get(userId).getLegacyVpnInfo(); 3257 } 3258 } 3259 3260 /** 3261 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3262 * and not available in ConnectivityManager. 3263 */ 3264 @Override 3265 public VpnInfo[] getAllVpnInfo() { 3266 enforceConnectivityInternalPermission(); 3267 if (mLockdownEnabled) { 3268 return new VpnInfo[0]; 3269 } 3270 3271 synchronized(mVpns) { 3272 List<VpnInfo> infoList = new ArrayList<>(); 3273 for (int i = 0; i < mVpns.size(); i++) { 3274 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3275 if (info != null) { 3276 infoList.add(info); 3277 } 3278 } 3279 return infoList.toArray(new VpnInfo[infoList.size()]); 3280 } 3281 } 3282 3283 /** 3284 * @return VPN information for accounting, or null if we can't retrieve all required 3285 * information, e.g primary underlying iface. 3286 */ 3287 @Nullable 3288 private VpnInfo createVpnInfo(Vpn vpn) { 3289 VpnInfo info = vpn.getVpnInfo(); 3290 if (info == null) { 3291 return null; 3292 } 3293 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3294 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3295 // the underlyingNetworks list. 3296 if (underlyingNetworks == null) { 3297 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3298 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3299 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3300 } 3301 } else if (underlyingNetworks.length > 0) { 3302 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3303 if (linkProperties != null) { 3304 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3305 } 3306 } 3307 return info.primaryUnderlyingIface == null ? null : info; 3308 } 3309 3310 /** 3311 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3312 * VpnDialogs and not available in ConnectivityManager. 3313 * Permissions are checked in Vpn class. 3314 * @hide 3315 */ 3316 @Override 3317 public VpnConfig getVpnConfig(int userId) { 3318 enforceCrossUserPermission(userId); 3319 synchronized(mVpns) { 3320 Vpn vpn = mVpns.get(userId); 3321 if (vpn != null) { 3322 return vpn.getVpnConfig(); 3323 } else { 3324 return null; 3325 } 3326 } 3327 } 3328 3329 @Override 3330 public boolean updateLockdownVpn() { 3331 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3332 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3333 return false; 3334 } 3335 3336 // Tear down existing lockdown if profile was removed 3337 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3338 if (mLockdownEnabled) { 3339 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3340 final VpnProfile profile = VpnProfile.decode( 3341 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3342 if (profile == null) { 3343 Slog.e(TAG, "Lockdown VPN configured invalid profile " + profileName); 3344 setLockdownTracker(null); 3345 return true; 3346 } 3347 int user = UserHandle.getUserId(Binder.getCallingUid()); 3348 synchronized(mVpns) { 3349 Vpn vpn = mVpns.get(user); 3350 if (vpn == null) { 3351 Slog.w(TAG, "VPN for user " + user + " not ready yet. Skipping lockdown"); 3352 return false; 3353 } 3354 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, vpn, profile)); 3355 } 3356 } else { 3357 setLockdownTracker(null); 3358 } 3359 3360 return true; 3361 } 3362 3363 /** 3364 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3365 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3366 */ 3367 private void setLockdownTracker(LockdownVpnTracker tracker) { 3368 // Shutdown any existing tracker 3369 final LockdownVpnTracker existing = mLockdownTracker; 3370 mLockdownTracker = null; 3371 if (existing != null) { 3372 existing.shutdown(); 3373 } 3374 3375 try { 3376 if (tracker != null) { 3377 mNetd.setFirewallEnabled(true); 3378 mNetd.setFirewallInterfaceRule("lo", true); 3379 mLockdownTracker = tracker; 3380 mLockdownTracker.init(); 3381 } else { 3382 mNetd.setFirewallEnabled(false); 3383 } 3384 } catch (RemoteException e) { 3385 // ignored; NMS lives inside system_server 3386 } 3387 } 3388 3389 private void throwIfLockdownEnabled() { 3390 if (mLockdownEnabled) { 3391 throw new IllegalStateException("Unavailable in lockdown mode"); 3392 } 3393 } 3394 3395 /** 3396 * Starts the always-on VPN {@link VpnService} for user {@param userId}, which should perform 3397 * some setup and then call {@code establish()} to connect. 3398 * 3399 * @return {@code true} if the service was started, the service was already connected, or there 3400 * was no always-on VPN to start. {@code false} otherwise. 3401 */ 3402 private boolean startAlwaysOnVpn(int userId) { 3403 synchronized (mVpns) { 3404 Vpn vpn = mVpns.get(userId); 3405 if (vpn == null) { 3406 // Shouldn't happen as all codepaths that point here should have checked the Vpn 3407 // exists already. 3408 Slog.wtf(TAG, "User " + userId + " has no Vpn configuration"); 3409 return false; 3410 } 3411 3412 return vpn.startAlwaysOnVpn(); 3413 } 3414 } 3415 3416 @Override 3417 public boolean setAlwaysOnVpnPackage(int userId, String packageName, boolean lockdown) { 3418 enforceConnectivityInternalPermission(); 3419 enforceCrossUserPermission(userId); 3420 3421 // Can't set always-on VPN if legacy VPN is already in lockdown mode. 3422 if (LockdownVpnTracker.isEnabled()) { 3423 return false; 3424 } 3425 3426 synchronized (mVpns) { 3427 Vpn vpn = mVpns.get(userId); 3428 if (vpn == null) { 3429 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3430 return false; 3431 } 3432 if (!vpn.setAlwaysOnPackage(packageName, lockdown)) { 3433 return false; 3434 } 3435 if (!startAlwaysOnVpn(userId)) { 3436 vpn.setAlwaysOnPackage(null, false); 3437 return false; 3438 } 3439 3440 vpn.saveAlwaysOnPackage(); 3441 } 3442 return true; 3443 } 3444 3445 @Override 3446 public String getAlwaysOnVpnPackage(int userId) { 3447 enforceConnectivityInternalPermission(); 3448 enforceCrossUserPermission(userId); 3449 3450 synchronized (mVpns) { 3451 Vpn vpn = mVpns.get(userId); 3452 if (vpn == null) { 3453 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3454 return null; 3455 } 3456 return vpn.getAlwaysOnPackage(); 3457 } 3458 } 3459 3460 @Override 3461 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3462 // TODO: Remove? Any reason to trigger a provisioning check? 3463 return -1; 3464 } 3465 3466 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3467 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3468 3469 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3470 Intent intent = new Intent(action); 3471 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3472 // Concatenate the range of types onto the range of NetIDs. 3473 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3474 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3475 networkType, null, pendingIntent, false); 3476 } 3477 3478 /** 3479 * Show or hide network provisioning notifications. 3480 * 3481 * We use notifications for two purposes: to notify that a network requires sign in 3482 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3483 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3484 * particular network we can display the notification type that was most recently requested. 3485 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3486 * might first display NO_INTERNET, and then when the captive portal check completes, display 3487 * SIGN_IN. 3488 * 3489 * @param id an identifier that uniquely identifies this notification. This must match 3490 * between show and hide calls. We use the NetID value but for legacy callers 3491 * we concatenate the range of types with the range of NetIDs. 3492 */ 3493 private void setProvNotificationVisibleIntent(boolean visible, int id, 3494 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent, 3495 boolean highPriority) { 3496 if (VDBG || (DBG && visible)) { 3497 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3498 + " networkType=" + getNetworkTypeName(networkType) 3499 + " extraInfo=" + extraInfo + " highPriority=" + highPriority); 3500 } 3501 3502 Resources r = Resources.getSystem(); 3503 NotificationManager notificationManager = (NotificationManager) mContext 3504 .getSystemService(Context.NOTIFICATION_SERVICE); 3505 3506 if (visible) { 3507 CharSequence title; 3508 CharSequence details; 3509 int icon; 3510 if (notifyType == NotificationType.NO_INTERNET && 3511 networkType == ConnectivityManager.TYPE_WIFI) { 3512 title = r.getString(R.string.wifi_no_internet, 0); 3513 details = r.getString(R.string.wifi_no_internet_detailed); 3514 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3515 } else if (notifyType == NotificationType.SIGN_IN) { 3516 switch (networkType) { 3517 case ConnectivityManager.TYPE_WIFI: 3518 title = r.getString(R.string.wifi_available_sign_in, 0); 3519 details = r.getString(R.string.network_available_sign_in_detailed, 3520 extraInfo); 3521 icon = R.drawable.stat_notify_wifi_in_range; 3522 break; 3523 case ConnectivityManager.TYPE_MOBILE: 3524 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3525 title = r.getString(R.string.network_available_sign_in, 0); 3526 // TODO: Change this to pull from NetworkInfo once a printable 3527 // name has been added to it 3528 details = mTelephonyManager.getNetworkOperatorName(); 3529 icon = R.drawable.stat_notify_rssi_in_range; 3530 break; 3531 default: 3532 title = r.getString(R.string.network_available_sign_in, 0); 3533 details = r.getString(R.string.network_available_sign_in_detailed, 3534 extraInfo); 3535 icon = R.drawable.stat_notify_rssi_in_range; 3536 break; 3537 } 3538 } else { 3539 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3540 + getNetworkTypeName(networkType)); 3541 return; 3542 } 3543 3544 Notification notification = new Notification.Builder(mContext) 3545 .setWhen(0) 3546 .setSmallIcon(icon) 3547 .setAutoCancel(true) 3548 .setTicker(title) 3549 .setColor(mContext.getColor( 3550 com.android.internal.R.color.system_notification_accent_color)) 3551 .setContentTitle(title) 3552 .setContentText(details) 3553 .setContentIntent(intent) 3554 .setLocalOnly(true) 3555 .setPriority(highPriority ? 3556 Notification.PRIORITY_HIGH : 3557 Notification.PRIORITY_DEFAULT) 3558 .setDefaults(highPriority ? Notification.DEFAULT_ALL : 0) 3559 .setOnlyAlertOnce(true) 3560 .build(); 3561 3562 try { 3563 notificationManager.notifyAsUser(NOTIFICATION_ID, id, notification, UserHandle.ALL); 3564 } catch (NullPointerException npe) { 3565 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3566 npe.printStackTrace(); 3567 } 3568 } else { 3569 try { 3570 notificationManager.cancelAsUser(NOTIFICATION_ID, id, UserHandle.ALL); 3571 } catch (NullPointerException npe) { 3572 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3573 npe.printStackTrace(); 3574 } 3575 } 3576 } 3577 3578 /** Location to an updatable file listing carrier provisioning urls. 3579 * An example: 3580 * 3581 * <?xml version="1.0" encoding="utf-8"?> 3582 * <provisioningUrls> 3583 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3584 * </provisioningUrls> 3585 */ 3586 private static final String PROVISIONING_URL_PATH = 3587 "/data/misc/radio/provisioning_urls.xml"; 3588 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3589 3590 /** XML tag for root element. */ 3591 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3592 /** XML tag for individual url */ 3593 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3594 /** XML attribute for mcc */ 3595 private static final String ATTR_MCC = "mcc"; 3596 /** XML attribute for mnc */ 3597 private static final String ATTR_MNC = "mnc"; 3598 3599 private String getProvisioningUrlBaseFromFile() { 3600 FileReader fileReader = null; 3601 XmlPullParser parser = null; 3602 Configuration config = mContext.getResources().getConfiguration(); 3603 3604 try { 3605 fileReader = new FileReader(mProvisioningUrlFile); 3606 parser = Xml.newPullParser(); 3607 parser.setInput(fileReader); 3608 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3609 3610 while (true) { 3611 XmlUtils.nextElement(parser); 3612 3613 String element = parser.getName(); 3614 if (element == null) break; 3615 3616 if (element.equals(TAG_PROVISIONING_URL)) { 3617 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3618 try { 3619 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3620 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3621 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3622 parser.next(); 3623 if (parser.getEventType() == XmlPullParser.TEXT) { 3624 return parser.getText(); 3625 } 3626 } 3627 } 3628 } catch (NumberFormatException e) { 3629 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3630 } 3631 } 3632 } 3633 return null; 3634 } catch (FileNotFoundException e) { 3635 loge("Carrier Provisioning Urls file not found"); 3636 } catch (XmlPullParserException e) { 3637 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3638 } catch (IOException e) { 3639 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3640 } finally { 3641 if (fileReader != null) { 3642 try { 3643 fileReader.close(); 3644 } catch (IOException e) {} 3645 } 3646 } 3647 return null; 3648 } 3649 3650 @Override 3651 public String getMobileProvisioningUrl() { 3652 enforceConnectivityInternalPermission(); 3653 String url = getProvisioningUrlBaseFromFile(); 3654 if (TextUtils.isEmpty(url)) { 3655 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3656 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3657 } else { 3658 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3659 } 3660 // populate the iccid, imei and phone number in the provisioning url. 3661 if (!TextUtils.isEmpty(url)) { 3662 String phoneNumber = mTelephonyManager.getLine1Number(); 3663 if (TextUtils.isEmpty(phoneNumber)) { 3664 phoneNumber = "0000000000"; 3665 } 3666 url = String.format(url, 3667 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3668 mTelephonyManager.getDeviceId() /* IMEI */, 3669 phoneNumber /* Phone numer */); 3670 } 3671 3672 return url; 3673 } 3674 3675 @Override 3676 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3677 String action) { 3678 enforceConnectivityInternalPermission(); 3679 final long ident = Binder.clearCallingIdentity(); 3680 try { 3681 setProvNotificationVisible(visible, networkType, action); 3682 } finally { 3683 Binder.restoreCallingIdentity(ident); 3684 } 3685 } 3686 3687 @Override 3688 public void setAirplaneMode(boolean enable) { 3689 enforceConnectivityInternalPermission(); 3690 final long ident = Binder.clearCallingIdentity(); 3691 try { 3692 final ContentResolver cr = mContext.getContentResolver(); 3693 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3694 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3695 intent.putExtra("state", enable); 3696 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3697 } finally { 3698 Binder.restoreCallingIdentity(ident); 3699 } 3700 } 3701 3702 private void onUserStart(int userId) { 3703 synchronized(mVpns) { 3704 Vpn userVpn = mVpns.get(userId); 3705 if (userVpn != null) { 3706 loge("Starting user already has a VPN"); 3707 return; 3708 } 3709 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3710 mVpns.put(userId, userVpn); 3711 3712 final ContentResolver cr = mContext.getContentResolver(); 3713 String alwaysOnPackage = Settings.Secure.getStringForUser(cr, 3714 Settings.Secure.ALWAYS_ON_VPN_APP, userId); 3715 final boolean alwaysOnLockdown = Settings.Secure.getIntForUser(cr, 3716 Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN, /* default */ 0, userId) != 0; 3717 if (alwaysOnPackage != null) { 3718 userVpn.setAlwaysOnPackage(alwaysOnPackage, alwaysOnLockdown); 3719 } 3720 } 3721 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3722 updateLockdownVpn(); 3723 } 3724 } 3725 3726 private void onUserStop(int userId) { 3727 synchronized(mVpns) { 3728 Vpn userVpn = mVpns.get(userId); 3729 if (userVpn == null) { 3730 loge("Stopped user has no VPN"); 3731 return; 3732 } 3733 userVpn.onUserStopped(); 3734 mVpns.delete(userId); 3735 } 3736 } 3737 3738 private void onUserAdded(int userId) { 3739 synchronized(mVpns) { 3740 final int vpnsSize = mVpns.size(); 3741 for (int i = 0; i < vpnsSize; i++) { 3742 Vpn vpn = mVpns.valueAt(i); 3743 vpn.onUserAdded(userId); 3744 } 3745 } 3746 } 3747 3748 private void onUserRemoved(int userId) { 3749 synchronized(mVpns) { 3750 final int vpnsSize = mVpns.size(); 3751 for (int i = 0; i < vpnsSize; i++) { 3752 Vpn vpn = mVpns.valueAt(i); 3753 vpn.onUserRemoved(userId); 3754 } 3755 } 3756 } 3757 3758 private void onUserUnlocked(int userId) { 3759 // User present may be sent because of an unlock, which might mean an unlocked keystore. 3760 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3761 updateLockdownVpn(); 3762 } else { 3763 startAlwaysOnVpn(userId); 3764 } 3765 } 3766 3767 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3768 @Override 3769 public void onReceive(Context context, Intent intent) { 3770 final String action = intent.getAction(); 3771 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3772 if (userId == UserHandle.USER_NULL) return; 3773 3774 if (Intent.ACTION_USER_STARTED.equals(action)) { 3775 onUserStart(userId); 3776 } else if (Intent.ACTION_USER_STOPPED.equals(action)) { 3777 onUserStop(userId); 3778 } else if (Intent.ACTION_USER_ADDED.equals(action)) { 3779 onUserAdded(userId); 3780 } else if (Intent.ACTION_USER_REMOVED.equals(action)) { 3781 onUserRemoved(userId); 3782 } else if (Intent.ACTION_USER_UNLOCKED.equals(action)) { 3783 onUserUnlocked(userId); 3784 } 3785 } 3786 }; 3787 3788 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3789 new HashMap<Messenger, NetworkFactoryInfo>(); 3790 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3791 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3792 3793 private static final int MAX_NETWORK_REQUESTS_PER_UID = 100; 3794 // Map from UID to number of NetworkRequests that UID has filed. 3795 @GuardedBy("mUidToNetworkRequestCount") 3796 private final SparseIntArray mUidToNetworkRequestCount = new SparseIntArray(); 3797 3798 private static class NetworkFactoryInfo { 3799 public final String name; 3800 public final Messenger messenger; 3801 public final AsyncChannel asyncChannel; 3802 3803 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3804 this.name = name; 3805 this.messenger = messenger; 3806 this.asyncChannel = asyncChannel; 3807 } 3808 } 3809 3810 /** 3811 * A NetworkRequest as registered by an application can be one of three 3812 * types: 3813 * 3814 * - "listen", for which the framework will issue callbacks about any 3815 * and all networks that match the specified NetworkCapabilities, 3816 * 3817 * - "request", capable of causing a specific network to be created 3818 * first (e.g. a telephony DUN request), the framework will issue 3819 * callbacks about the single, highest scoring current network 3820 * (if any) that matches the specified NetworkCapabilities, or 3821 * 3822 * - "track the default network", a hybrid of the two designed such 3823 * that the framework will issue callbacks for the single, highest 3824 * scoring current network (if any) that matches the capabilities of 3825 * the default Internet request (mDefaultRequest), but which cannot 3826 * cause the framework to either create or retain the existence of 3827 * any specific network. 3828 * 3829 */ 3830 private static enum NetworkRequestType { 3831 LISTEN, 3832 TRACK_DEFAULT, 3833 REQUEST 3834 }; 3835 3836 /** 3837 * Tracks info about the requester. 3838 * Also used to notice when the calling process dies so we can self-expire 3839 */ 3840 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3841 final NetworkRequest request; 3842 final PendingIntent mPendingIntent; 3843 boolean mPendingIntentSent; 3844 private final IBinder mBinder; 3845 final int mPid; 3846 final int mUid; 3847 final Messenger messenger; 3848 private final NetworkRequestType mType; 3849 3850 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, NetworkRequestType type) { 3851 request = r; 3852 mPendingIntent = pi; 3853 messenger = null; 3854 mBinder = null; 3855 mPid = getCallingPid(); 3856 mUid = getCallingUid(); 3857 mType = type; 3858 enforceRequestCountLimit(); 3859 } 3860 3861 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, NetworkRequestType type) { 3862 super(); 3863 messenger = m; 3864 request = r; 3865 mBinder = binder; 3866 mPid = getCallingPid(); 3867 mUid = getCallingUid(); 3868 mType = type; 3869 mPendingIntent = null; 3870 enforceRequestCountLimit(); 3871 3872 try { 3873 mBinder.linkToDeath(this, 0); 3874 } catch (RemoteException e) { 3875 binderDied(); 3876 } 3877 } 3878 3879 private void enforceRequestCountLimit() { 3880 synchronized (mUidToNetworkRequestCount) { 3881 int networkRequests = mUidToNetworkRequestCount.get(mUid, 0) + 1; 3882 if (networkRequests >= MAX_NETWORK_REQUESTS_PER_UID) { 3883 throw new IllegalArgumentException("Too many NetworkRequests filed"); 3884 } 3885 mUidToNetworkRequestCount.put(mUid, networkRequests); 3886 } 3887 } 3888 3889 private String typeString() { 3890 switch (mType) { 3891 case LISTEN: return "Listen"; 3892 case REQUEST: return "Request"; 3893 case TRACK_DEFAULT: return "Track default"; 3894 default: 3895 return "unknown type"; 3896 } 3897 } 3898 3899 void unlinkDeathRecipient() { 3900 if (mBinder != null) { 3901 mBinder.unlinkToDeath(this, 0); 3902 } 3903 } 3904 3905 public void binderDied() { 3906 log("ConnectivityService NetworkRequestInfo binderDied(" + 3907 request + ", " + mBinder + ")"); 3908 releaseNetworkRequest(request); 3909 } 3910 3911 /** 3912 * Returns true iff. the contained NetworkRequest is one that: 3913 * 3914 * - should be associated with at most one satisfying network 3915 * at a time; 3916 * 3917 * - should cause a network to be kept up if it is the only network 3918 * which can satisfy the NetworkReqeust. 3919 * 3920 * For full detail of how isRequest() is used for pairing Networks with 3921 * NetworkRequests read rematchNetworkAndRequests(). 3922 * 3923 * TODO: Rename to something more properly descriptive. 3924 */ 3925 public boolean isRequest() { 3926 return (mType == NetworkRequestType.TRACK_DEFAULT) || 3927 (mType == NetworkRequestType.REQUEST); 3928 } 3929 3930 public String toString() { 3931 return typeString() + 3932 " from uid/pid:" + mUid + "/" + mPid + 3933 " for " + request + 3934 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3935 } 3936 } 3937 3938 private void ensureRequestableCapabilities(NetworkCapabilities networkCapabilities) { 3939 final String badCapability = networkCapabilities.describeFirstNonRequestableCapability(); 3940 if (badCapability != null) { 3941 throw new IllegalArgumentException("Cannot request network with " + badCapability); 3942 } 3943 } 3944 3945 private ArrayList<Integer> getSignalStrengthThresholds(NetworkAgentInfo nai) { 3946 final SortedSet<Integer> thresholds = new TreeSet(); 3947 synchronized (nai) { 3948 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3949 if (nri.request.networkCapabilities.hasSignalStrength() && 3950 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 3951 thresholds.add(nri.request.networkCapabilities.getSignalStrength()); 3952 } 3953 } 3954 } 3955 return new ArrayList<Integer>(thresholds); 3956 } 3957 3958 private void updateSignalStrengthThresholds( 3959 NetworkAgentInfo nai, String reason, NetworkRequest request) { 3960 ArrayList<Integer> thresholdsArray = getSignalStrengthThresholds(nai); 3961 Bundle thresholds = new Bundle(); 3962 thresholds.putIntegerArrayList("thresholds", thresholdsArray); 3963 3964 if (VDBG || (DBG && !"CONNECT".equals(reason))) { 3965 String detail; 3966 if (request != null && request.networkCapabilities.hasSignalStrength()) { 3967 detail = reason + " " + request.networkCapabilities.getSignalStrength(); 3968 } else { 3969 detail = reason; 3970 } 3971 log(String.format("updateSignalStrengthThresholds: %s, sending %s to %s", 3972 detail, Arrays.toString(thresholdsArray.toArray()), nai.name())); 3973 } 3974 3975 nai.asyncChannel.sendMessage( 3976 android.net.NetworkAgent.CMD_SET_SIGNAL_STRENGTH_THRESHOLDS, 3977 0, 0, thresholds); 3978 } 3979 3980 @Override 3981 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3982 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3983 final NetworkRequestType type = (networkCapabilities == null) 3984 ? NetworkRequestType.TRACK_DEFAULT 3985 : NetworkRequestType.REQUEST; 3986 // If the requested networkCapabilities is null, take them instead from 3987 // the default network request. This allows callers to keep track of 3988 // the system default network. 3989 if (type == NetworkRequestType.TRACK_DEFAULT) { 3990 networkCapabilities = new NetworkCapabilities(mDefaultRequest.networkCapabilities); 3991 enforceAccessPermission(); 3992 } else { 3993 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3994 enforceNetworkRequestPermissions(networkCapabilities); 3995 } 3996 enforceMeteredApnPolicy(networkCapabilities); 3997 ensureRequestableCapabilities(networkCapabilities); 3998 3999 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 4000 throw new IllegalArgumentException("Bad timeout specified"); 4001 } 4002 4003 if (NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER 4004 .equals(networkCapabilities.getNetworkSpecifier())) { 4005 throw new IllegalArgumentException("Invalid network specifier - must not be '" 4006 + NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER + "'"); 4007 } 4008 4009 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 4010 nextNetworkRequestId()); 4011 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, type); 4012 if (DBG) log("requestNetwork for " + nri); 4013 4014 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 4015 if (timeoutMs > 0) { 4016 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 4017 nri), timeoutMs); 4018 } 4019 return networkRequest; 4020 } 4021 4022 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 4023 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 4024 enforceConnectivityInternalPermission(); 4025 } else { 4026 enforceChangePermission(); 4027 } 4028 } 4029 4030 @Override 4031 public boolean requestBandwidthUpdate(Network network) { 4032 enforceAccessPermission(); 4033 NetworkAgentInfo nai = null; 4034 if (network == null) { 4035 return false; 4036 } 4037 synchronized (mNetworkForNetId) { 4038 nai = mNetworkForNetId.get(network.netId); 4039 } 4040 if (nai != null) { 4041 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 4042 return true; 4043 } 4044 return false; 4045 } 4046 4047 private boolean isSystem(int uid) { 4048 return uid < Process.FIRST_APPLICATION_UID; 4049 } 4050 4051 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 4052 final int uid = Binder.getCallingUid(); 4053 if (isSystem(uid)) { 4054 return; 4055 } 4056 // if UID is restricted, don't allow them to bring up metered APNs 4057 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 4058 final int uidRules; 4059 synchronized(mRulesLock) { 4060 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 4061 } 4062 if (mRestrictBackground && (uidRules & RULE_ALLOW_METERED) == 0 4063 && (uidRules & RULE_TEMPORARY_ALLOW_METERED) == 0) { 4064 // we could silently fail or we can filter the available nets to only give 4065 // them those they have access to. Chose the more useful option. 4066 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 4067 } 4068 } 4069 } 4070 4071 @Override 4072 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 4073 PendingIntent operation) { 4074 checkNotNull(operation, "PendingIntent cannot be null."); 4075 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4076 enforceNetworkRequestPermissions(networkCapabilities); 4077 enforceMeteredApnPolicy(networkCapabilities); 4078 ensureRequestableCapabilities(networkCapabilities); 4079 4080 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 4081 nextNetworkRequestId()); 4082 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 4083 NetworkRequestType.REQUEST); 4084 if (DBG) log("pendingRequest for " + nri); 4085 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 4086 nri)); 4087 return networkRequest; 4088 } 4089 4090 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 4091 mHandler.sendMessageDelayed( 4092 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 4093 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 4094 } 4095 4096 @Override 4097 public void releasePendingNetworkRequest(PendingIntent operation) { 4098 checkNotNull(operation, "PendingIntent cannot be null."); 4099 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 4100 getCallingUid(), 0, operation)); 4101 } 4102 4103 // In order to implement the compatibility measure for pre-M apps that call 4104 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 4105 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 4106 // This ensures it has permission to do so. 4107 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 4108 if (nc == null) { 4109 return false; 4110 } 4111 int[] transportTypes = nc.getTransportTypes(); 4112 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 4113 return false; 4114 } 4115 try { 4116 mContext.enforceCallingOrSelfPermission( 4117 android.Manifest.permission.ACCESS_WIFI_STATE, 4118 "ConnectivityService"); 4119 } catch (SecurityException e) { 4120 return false; 4121 } 4122 return true; 4123 } 4124 4125 @Override 4126 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 4127 Messenger messenger, IBinder binder) { 4128 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 4129 enforceAccessPermission(); 4130 } 4131 4132 NetworkRequest networkRequest = new NetworkRequest( 4133 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 4134 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 4135 NetworkRequestType.LISTEN); 4136 if (VDBG) log("listenForNetwork for " + nri); 4137 4138 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4139 return networkRequest; 4140 } 4141 4142 @Override 4143 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 4144 PendingIntent operation) { 4145 checkNotNull(operation, "PendingIntent cannot be null."); 4146 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 4147 enforceAccessPermission(); 4148 } 4149 4150 NetworkRequest networkRequest = new NetworkRequest( 4151 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 4152 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 4153 NetworkRequestType.LISTEN); 4154 if (VDBG) log("pendingListenForNetwork for " + nri); 4155 4156 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4157 } 4158 4159 @Override 4160 public void releaseNetworkRequest(NetworkRequest networkRequest) { 4161 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 4162 0, networkRequest)); 4163 } 4164 4165 @Override 4166 public void registerNetworkFactory(Messenger messenger, String name) { 4167 enforceConnectivityInternalPermission(); 4168 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 4169 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 4170 } 4171 4172 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 4173 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 4174 mNetworkFactoryInfos.put(nfi.messenger, nfi); 4175 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 4176 } 4177 4178 @Override 4179 public void unregisterNetworkFactory(Messenger messenger) { 4180 enforceConnectivityInternalPermission(); 4181 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 4182 } 4183 4184 private void handleUnregisterNetworkFactory(Messenger messenger) { 4185 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 4186 if (nfi == null) { 4187 loge("Failed to find Messenger in unregisterNetworkFactory"); 4188 return; 4189 } 4190 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 4191 } 4192 4193 /** 4194 * NetworkAgentInfo supporting a request by requestId. 4195 * These have already been vetted (their Capabilities satisfy the request) 4196 * and the are the highest scored network available. 4197 * the are keyed off the Requests requestId. 4198 */ 4199 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 4200 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 4201 new SparseArray<NetworkAgentInfo>(); 4202 4203 // NOTE: Accessed on multiple threads, must be synchronized on itself. 4204 @GuardedBy("mNetworkForNetId") 4205 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 4206 new SparseArray<NetworkAgentInfo>(); 4207 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 4208 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 4209 // there may not be a strict 1:1 correlation between the two. 4210 @GuardedBy("mNetworkForNetId") 4211 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 4212 4213 // NetworkAgentInfo keyed off its connecting messenger 4214 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 4215 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 4216 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 4217 new HashMap<Messenger, NetworkAgentInfo>(); 4218 4219 @GuardedBy("mBlockedAppUids") 4220 private final HashSet<Integer> mBlockedAppUids = new HashSet(); 4221 4222 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 4223 private final NetworkRequest mDefaultRequest; 4224 4225 // Request used to optionally keep mobile data active even when higher 4226 // priority networks like Wi-Fi are active. 4227 private final NetworkRequest mDefaultMobileDataRequest; 4228 4229 private NetworkAgentInfo getDefaultNetwork() { 4230 return mNetworkForRequestId.get(mDefaultRequest.requestId); 4231 } 4232 4233 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 4234 return nai == getDefaultNetwork(); 4235 } 4236 4237 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 4238 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 4239 int currentScore, NetworkMisc networkMisc) { 4240 enforceConnectivityInternalPermission(); 4241 4242 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 4243 // satisfies mDefaultRequest. 4244 final NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 4245 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 4246 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 4247 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest, this); 4248 synchronized (this) { 4249 nai.networkMonitor.systemReady = mSystemReady; 4250 } 4251 addValidationLogs(nai.networkMonitor.getValidationLogs(), nai.network, 4252 networkInfo.getExtraInfo()); 4253 if (DBG) log("registerNetworkAgent " + nai); 4254 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 4255 return nai.network.netId; 4256 } 4257 4258 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 4259 if (VDBG) log("Got NetworkAgent Messenger"); 4260 mNetworkAgentInfos.put(na.messenger, na); 4261 synchronized (mNetworkForNetId) { 4262 mNetworkForNetId.put(na.network.netId, na); 4263 } 4264 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 4265 NetworkInfo networkInfo = na.networkInfo; 4266 na.networkInfo = null; 4267 updateNetworkInfo(na, networkInfo); 4268 } 4269 4270 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 4271 LinkProperties newLp = networkAgent.linkProperties; 4272 int netId = networkAgent.network.netId; 4273 4274 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 4275 // we do anything else, make sure its LinkProperties are accurate. 4276 if (networkAgent.clatd != null) { 4277 networkAgent.clatd.fixupLinkProperties(oldLp); 4278 } 4279 4280 updateInterfaces(newLp, oldLp, netId); 4281 updateMtu(newLp, oldLp); 4282 // TODO - figure out what to do for clat 4283// for (LinkProperties lp : newLp.getStackedLinks()) { 4284// updateMtu(lp, null); 4285// } 4286 updateTcpBufferSizes(networkAgent); 4287 4288 updateRoutes(newLp, oldLp, netId); 4289 updateDnses(newLp, oldLp, netId); 4290 4291 updateClat(newLp, oldLp, networkAgent); 4292 if (isDefaultNetwork(networkAgent)) { 4293 handleApplyDefaultProxy(newLp.getHttpProxy()); 4294 } else { 4295 updateProxy(newLp, oldLp, networkAgent); 4296 } 4297 // TODO - move this check to cover the whole function 4298 if (!Objects.equals(newLp, oldLp)) { 4299 notifyIfacesChangedForNetworkStats(); 4300 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 4301 } 4302 4303 mKeepaliveTracker.handleCheckKeepalivesStillValid(networkAgent); 4304 } 4305 4306 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 4307 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 4308 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 4309 4310 if (!wasRunningClat && shouldRunClat) { 4311 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 4312 nai.clatd.start(); 4313 } else if (wasRunningClat && !shouldRunClat) { 4314 nai.clatd.stop(); 4315 } 4316 } 4317 4318 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 4319 CompareResult<String> interfaceDiff = new CompareResult<String>(); 4320 if (oldLp != null) { 4321 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 4322 } else if (newLp != null) { 4323 interfaceDiff.added = newLp.getAllInterfaceNames(); 4324 } 4325 for (String iface : interfaceDiff.added) { 4326 try { 4327 if (DBG) log("Adding iface " + iface + " to network " + netId); 4328 mNetd.addInterfaceToNetwork(iface, netId); 4329 } catch (Exception e) { 4330 loge("Exception adding interface: " + e); 4331 } 4332 } 4333 for (String iface : interfaceDiff.removed) { 4334 try { 4335 if (DBG) log("Removing iface " + iface + " from network " + netId); 4336 mNetd.removeInterfaceFromNetwork(iface, netId); 4337 } catch (Exception e) { 4338 loge("Exception removing interface: " + e); 4339 } 4340 } 4341 } 4342 4343 /** 4344 * Have netd update routes from oldLp to newLp. 4345 * @return true if routes changed between oldLp and newLp 4346 */ 4347 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 4348 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 4349 if (oldLp != null) { 4350 routeDiff = oldLp.compareAllRoutes(newLp); 4351 } else if (newLp != null) { 4352 routeDiff.added = newLp.getAllRoutes(); 4353 } 4354 4355 // add routes before removing old in case it helps with continuous connectivity 4356 4357 // do this twice, adding non-nexthop routes first, then routes they are dependent on 4358 for (RouteInfo route : routeDiff.added) { 4359 if (route.hasGateway()) continue; 4360 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4361 try { 4362 mNetd.addRoute(netId, route); 4363 } catch (Exception e) { 4364 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 4365 loge("Exception in addRoute for non-gateway: " + e); 4366 } 4367 } 4368 } 4369 for (RouteInfo route : routeDiff.added) { 4370 if (route.hasGateway() == false) continue; 4371 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4372 try { 4373 mNetd.addRoute(netId, route); 4374 } catch (Exception e) { 4375 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4376 loge("Exception in addRoute for gateway: " + e); 4377 } 4378 } 4379 } 4380 4381 for (RouteInfo route : routeDiff.removed) { 4382 if (VDBG) log("Removing Route [" + route + "] from network " + netId); 4383 try { 4384 mNetd.removeRoute(netId, route); 4385 } catch (Exception e) { 4386 loge("Exception in removeRoute: " + e); 4387 } 4388 } 4389 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4390 } 4391 4392 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId) { 4393 if (oldLp != null && newLp.isIdenticalDnses(oldLp)) { 4394 return; // no updating necessary 4395 } 4396 4397 Collection<InetAddress> dnses = newLp.getDnsServers(); 4398 if (DBG) log("Setting DNS servers for network " + netId + " to " + dnses); 4399 try { 4400 mNetd.setDnsConfigurationForNetwork( 4401 netId, NetworkUtils.makeStrings(dnses), newLp.getDomains()); 4402 } catch (Exception e) { 4403 loge("Exception in setDnsConfigurationForNetwork: " + e); 4404 } 4405 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 4406 if (defaultNai != null && defaultNai.network.netId == netId) { 4407 setDefaultDnsSystemProperties(dnses); 4408 } 4409 flushVmDnsCache(); 4410 } 4411 4412 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4413 int last = 0; 4414 for (InetAddress dns : dnses) { 4415 ++last; 4416 String key = "net.dns" + last; 4417 String value = dns.getHostAddress(); 4418 SystemProperties.set(key, value); 4419 } 4420 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4421 String key = "net.dns" + i; 4422 SystemProperties.set(key, ""); 4423 } 4424 mNumDnsEntries = last; 4425 } 4426 4427 /** 4428 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 4429 * augmented with any stateful capabilities implied from {@code networkAgent} 4430 * (e.g., validated status and captive portal status). 4431 * 4432 * @param nai the network having its capabilities updated. 4433 * @param networkCapabilities the new network capabilities. 4434 */ 4435 private void updateCapabilities(NetworkAgentInfo nai, NetworkCapabilities networkCapabilities) { 4436 // Don't modify caller's NetworkCapabilities. 4437 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4438 if (nai.lastValidated) { 4439 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4440 } else { 4441 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4442 } 4443 if (nai.lastCaptivePortalDetected) { 4444 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4445 } else { 4446 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4447 } 4448 if (!Objects.equals(nai.networkCapabilities, networkCapabilities)) { 4449 final int oldScore = nai.getCurrentScore(); 4450 if (nai.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) != 4451 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED)) { 4452 try { 4453 mNetd.setNetworkPermission(nai.network.netId, 4454 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) ? 4455 null : NetworkManagementService.PERMISSION_SYSTEM); 4456 } catch (RemoteException e) { 4457 loge("Exception in setNetworkPermission: " + e); 4458 } 4459 } 4460 synchronized (nai) { 4461 nai.networkCapabilities = networkCapabilities; 4462 } 4463 rematchAllNetworksAndRequests(nai, oldScore); 4464 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 4465 } 4466 } 4467 4468 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4469 for (int i = 0; i < nai.networkRequests.size(); i++) { 4470 NetworkRequest nr = nai.networkRequests.valueAt(i); 4471 // Don't send listening requests to factories. b/17393458 4472 if (!isRequest(nr)) continue; 4473 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4474 } 4475 } 4476 4477 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4478 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4479 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4480 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4481 networkRequest); 4482 } 4483 } 4484 4485 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4486 int notificationType) { 4487 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4488 Intent intent = new Intent(); 4489 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4490 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4491 nri.mPendingIntentSent = true; 4492 sendIntent(nri.mPendingIntent, intent); 4493 } 4494 // else not handled 4495 } 4496 4497 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4498 mPendingIntentWakeLock.acquire(); 4499 try { 4500 if (DBG) log("Sending " + pendingIntent); 4501 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4502 } catch (PendingIntent.CanceledException e) { 4503 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4504 mPendingIntentWakeLock.release(); 4505 releasePendingNetworkRequest(pendingIntent); 4506 } 4507 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4508 } 4509 4510 @Override 4511 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4512 String resultData, Bundle resultExtras) { 4513 if (DBG) log("Finished sending " + pendingIntent); 4514 mPendingIntentWakeLock.release(); 4515 // Release with a delay so the receiving client has an opportunity to put in its 4516 // own request. 4517 releasePendingNetworkRequestWithDelay(pendingIntent); 4518 } 4519 4520 private void callCallbackForRequest(NetworkRequestInfo nri, 4521 NetworkAgentInfo networkAgent, int notificationType) { 4522 if (nri.messenger == null) return; // Default request has no msgr 4523 Bundle bundle = new Bundle(); 4524 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4525 new NetworkRequest(nri.request)); 4526 Message msg = Message.obtain(); 4527 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4528 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4529 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4530 } 4531 switch (notificationType) { 4532 case ConnectivityManager.CALLBACK_LOSING: { 4533 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4534 break; 4535 } 4536 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4537 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4538 new NetworkCapabilities(networkAgent.networkCapabilities)); 4539 break; 4540 } 4541 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4542 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4543 new LinkProperties(networkAgent.linkProperties)); 4544 break; 4545 } 4546 } 4547 msg.what = notificationType; 4548 msg.setData(bundle); 4549 try { 4550 if (VDBG) { 4551 log("sending notification " + notifyTypeToName(notificationType) + 4552 " for " + nri.request); 4553 } 4554 nri.messenger.send(msg); 4555 } catch (RemoteException e) { 4556 // may occur naturally in the race of binder death. 4557 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4558 } 4559 } 4560 4561 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4562 for (int i = 0; i < nai.networkRequests.size(); i++) { 4563 NetworkRequest nr = nai.networkRequests.valueAt(i); 4564 // Ignore listening requests. 4565 if (!isRequest(nr)) continue; 4566 loge("Dead network still had at least " + nr); 4567 break; 4568 } 4569 nai.asyncChannel.disconnect(); 4570 } 4571 4572 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4573 if (oldNetwork == null) { 4574 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4575 return; 4576 } 4577 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4578 teardownUnneededNetwork(oldNetwork); 4579 } 4580 4581 private void makeDefault(NetworkAgentInfo newNetwork) { 4582 if (DBG) log("Switching to new default network: " + newNetwork); 4583 setupDataActivityTracking(newNetwork); 4584 try { 4585 mNetd.setDefaultNetId(newNetwork.network.netId); 4586 } catch (Exception e) { 4587 loge("Exception setting default network :" + e); 4588 } 4589 notifyLockdownVpn(newNetwork); 4590 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4591 updateTcpBufferSizes(newNetwork); 4592 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4593 } 4594 4595 // Handles a network appearing or improving its score. 4596 // 4597 // - Evaluates all current NetworkRequests that can be 4598 // satisfied by newNetwork, and reassigns to newNetwork 4599 // any such requests for which newNetwork is the best. 4600 // 4601 // - Lingers any validated Networks that as a result are no longer 4602 // needed. A network is needed if it is the best network for 4603 // one or more NetworkRequests, or if it is a VPN. 4604 // 4605 // - Tears down newNetwork if it just became validated 4606 // but turns out to be unneeded. 4607 // 4608 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4609 // networks that have no chance (i.e. even if validated) 4610 // of becoming the highest scoring network. 4611 // 4612 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4613 // it does not remove NetworkRequests that other Networks could better satisfy. 4614 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4615 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4616 // as it performs better by a factor of the number of Networks. 4617 // 4618 // @param newNetwork is the network to be matched against NetworkRequests. 4619 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4620 // performed to tear down unvalidated networks that have no chance (i.e. even if 4621 // validated) of becoming the highest scoring network. 4622 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, 4623 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4624 if (!newNetwork.everConnected) return; 4625 boolean keep = newNetwork.isVPN(); 4626 boolean isNewDefault = false; 4627 NetworkAgentInfo oldDefaultNetwork = null; 4628 if (VDBG) log("rematching " + newNetwork.name()); 4629 // Find and migrate to this Network any NetworkRequests for 4630 // which this network is now the best. 4631 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4632 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4633 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4634 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4635 final NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4636 final boolean satisfies = newNetwork.satisfies(nri.request); 4637 if (newNetwork == currentNetwork && satisfies) { 4638 if (VDBG) { 4639 log("Network " + newNetwork.name() + " was already satisfying" + 4640 " request " + nri.request.requestId + ". No change."); 4641 } 4642 keep = true; 4643 continue; 4644 } 4645 4646 // check if it satisfies the NetworkCapabilities 4647 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4648 if (satisfies) { 4649 if (!nri.isRequest()) { 4650 // This is not a request, it's a callback listener. 4651 // Add it to newNetwork regardless of score. 4652 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4653 continue; 4654 } 4655 4656 // next check if it's better than any current network we're using for 4657 // this request 4658 if (VDBG) { 4659 log("currentScore = " + 4660 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4661 ", newScore = " + newNetwork.getCurrentScore()); 4662 } 4663 if (currentNetwork == null || 4664 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4665 if (VDBG) log("rematch for " + newNetwork.name()); 4666 if (currentNetwork != null) { 4667 if (VDBG) log(" accepting network in place of " + currentNetwork.name()); 4668 currentNetwork.networkRequests.remove(nri.request.requestId); 4669 currentNetwork.networkLingered.add(nri.request); 4670 affectedNetworks.add(currentNetwork); 4671 } else { 4672 if (VDBG) log(" accepting network in place of null"); 4673 } 4674 unlinger(newNetwork); 4675 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4676 if (!newNetwork.addRequest(nri.request)) { 4677 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4678 } 4679 addedRequests.add(nri); 4680 keep = true; 4681 // Tell NetworkFactories about the new score, so they can stop 4682 // trying to connect if they know they cannot match it. 4683 // TODO - this could get expensive if we have alot of requests for this 4684 // network. Think about if there is a way to reduce this. Push 4685 // netid->request mapping to each factory? 4686 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4687 if (mDefaultRequest.requestId == nri.request.requestId) { 4688 isNewDefault = true; 4689 oldDefaultNetwork = currentNetwork; 4690 } 4691 } 4692 } else if (newNetwork.networkRequests.get(nri.request.requestId) != null) { 4693 // If "newNetwork" is listed as satisfying "nri" but no longer satisfies "nri", 4694 // mark it as no longer satisfying "nri". Because networks are processed by 4695 // rematchAllNetworkAndRequests() in descending score order, "currentNetwork" will 4696 // match "newNetwork" before this loop will encounter a "currentNetwork" with higher 4697 // score than "newNetwork" and where "currentNetwork" no longer satisfies "nri". 4698 // This means this code doesn't have to handle the case where "currentNetwork" no 4699 // longer satisfies "nri" when "currentNetwork" does not equal "newNetwork". 4700 if (DBG) { 4701 log("Network " + newNetwork.name() + " stopped satisfying" + 4702 " request " + nri.request.requestId); 4703 } 4704 newNetwork.networkRequests.remove(nri.request.requestId); 4705 if (currentNetwork == newNetwork) { 4706 mNetworkForRequestId.remove(nri.request.requestId); 4707 sendUpdatedScoreToFactories(nri.request, 0); 4708 } else { 4709 if (nri.isRequest()) { 4710 Slog.wtf(TAG, "BUG: Removing request " + nri.request.requestId + " from " + 4711 newNetwork.name() + 4712 " without updating mNetworkForRequestId or factories!"); 4713 } 4714 } 4715 // TODO: technically, sending CALLBACK_LOST here is 4716 // incorrect if nri is a request (not a listen) and there 4717 // is a replacement network currently connected that can 4718 // satisfy it. However, the only capability that can both 4719 // a) be requested and b) change is NET_CAPABILITY_TRUSTED, 4720 // so this code is only incorrect for a network that loses 4721 // the TRUSTED capability, which is a rare case. 4722 callCallbackForRequest(nri, newNetwork, ConnectivityManager.CALLBACK_LOST); 4723 } 4724 } 4725 // Linger any networks that are no longer needed. 4726 for (NetworkAgentInfo nai : affectedNetworks) { 4727 if (nai.lingering) { 4728 // Already lingered. Nothing to do. This can only happen if "nai" is in 4729 // "affectedNetworks" twice. The reasoning being that to get added to 4730 // "affectedNetworks", "nai" must have been satisfying a NetworkRequest 4731 // (i.e. not lingered) so it could have only been lingered by this loop. 4732 // unneeded(nai) will be false and we'll call unlinger() below which would 4733 // be bad, so handle it here. 4734 } else if (unneeded(nai)) { 4735 linger(nai); 4736 } else { 4737 // Clear nai.networkLingered we might have added above. 4738 unlinger(nai); 4739 } 4740 } 4741 if (isNewDefault) { 4742 // Notify system services that this network is up. 4743 makeDefault(newNetwork); 4744 // Log 0 -> X and Y -> X default network transitions, where X is the new default. 4745 logDefaultNetworkEvent(newNetwork, oldDefaultNetwork); 4746 synchronized (ConnectivityService.this) { 4747 // have a new default network, release the transition wakelock in 4748 // a second if it's held. The second pause is to allow apps 4749 // to reconnect over the new network 4750 if (mNetTransitionWakeLock.isHeld()) { 4751 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4752 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4753 mNetTransitionWakeLockSerialNumber, 0), 4754 1000); 4755 } 4756 } 4757 } 4758 4759 // do this after the default net is switched, but 4760 // before LegacyTypeTracker sends legacy broadcasts 4761 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4762 4763 if (isNewDefault) { 4764 // Maintain the illusion: since the legacy API only 4765 // understands one network at a time, we must pretend 4766 // that the current default network disconnected before 4767 // the new one connected. 4768 if (oldDefaultNetwork != null) { 4769 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4770 oldDefaultNetwork, true); 4771 } 4772 mDefaultInetConditionPublished = newNetwork.lastValidated ? 100 : 0; 4773 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4774 notifyLockdownVpn(newNetwork); 4775 } 4776 4777 if (keep) { 4778 // Notify battery stats service about this network, both the normal 4779 // interface and any stacked links. 4780 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4781 try { 4782 final IBatteryStats bs = BatteryStatsService.getService(); 4783 final int type = newNetwork.networkInfo.getType(); 4784 4785 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4786 bs.noteNetworkInterfaceType(baseIface, type); 4787 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4788 final String stackedIface = stacked.getInterfaceName(); 4789 bs.noteNetworkInterfaceType(stackedIface, type); 4790 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4791 } 4792 } catch (RemoteException ignored) { 4793 } 4794 4795 // This has to happen after the notifyNetworkCallbacks as that tickles each 4796 // ConnectivityManager instance so that legacy requests correctly bind dns 4797 // requests to this network. The legacy users are listening for this bcast 4798 // and will generally do a dns request so they can ensureRouteToHost and if 4799 // they do that before the callbacks happen they'll use the default network. 4800 // 4801 // TODO: Is there still a race here? We send the broadcast 4802 // after sending the callback, but if the app can receive the 4803 // broadcast before the callback, it might still break. 4804 // 4805 // This *does* introduce a race where if the user uses the new api 4806 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4807 // they may get old info. Reverse this after the old startUsing api is removed. 4808 // This is on top of the multiple intent sequencing referenced in the todo above. 4809 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4810 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4811 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4812 // legacy type tracker filters out repeat adds 4813 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4814 } 4815 } 4816 4817 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4818 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4819 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4820 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4821 if (newNetwork.isVPN()) { 4822 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4823 } 4824 } 4825 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4826 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4827 if (unneeded(nai)) { 4828 if (DBG) log("Reaping " + nai.name()); 4829 teardownUnneededNetwork(nai); 4830 } 4831 } 4832 } 4833 } 4834 4835 /** 4836 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4837 * being disconnected. 4838 * @param changed If only one Network's score or capabilities have been modified since the last 4839 * time this function was called, pass this Network in this argument, otherwise pass 4840 * null. 4841 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4842 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4843 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4844 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4845 * network's score. 4846 */ 4847 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4848 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4849 // to avoid the slowness. It is not simply enough to process just "changed", for 4850 // example in the case where "changed"'s score decreases and another network should begin 4851 // satifying a NetworkRequest that "changed" currently satisfies. 4852 4853 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4854 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4855 // rematchNetworkAndRequests() handles. 4856 if (changed != null && oldScore < changed.getCurrentScore()) { 4857 rematchNetworkAndRequests(changed, ReapUnvalidatedNetworks.REAP); 4858 } else { 4859 final NetworkAgentInfo[] nais = mNetworkAgentInfos.values().toArray( 4860 new NetworkAgentInfo[mNetworkAgentInfos.size()]); 4861 // Rematch higher scoring networks first to prevent requests first matching a lower 4862 // scoring network and then a higher scoring network, which could produce multiple 4863 // callbacks and inadvertently unlinger networks. 4864 Arrays.sort(nais); 4865 for (NetworkAgentInfo nai : nais) { 4866 rematchNetworkAndRequests(nai, 4867 // Only reap the last time through the loop. Reaping before all rematching 4868 // is complete could incorrectly teardown a network that hasn't yet been 4869 // rematched. 4870 (nai != nais[nais.length-1]) ? ReapUnvalidatedNetworks.DONT_REAP 4871 : ReapUnvalidatedNetworks.REAP); 4872 } 4873 } 4874 } 4875 4876 private void updateInetCondition(NetworkAgentInfo nai) { 4877 // Don't bother updating until we've graduated to validated at least once. 4878 if (!nai.everValidated) return; 4879 // For now only update icons for default connection. 4880 // TODO: Update WiFi and cellular icons separately. b/17237507 4881 if (!isDefaultNetwork(nai)) return; 4882 4883 int newInetCondition = nai.lastValidated ? 100 : 0; 4884 // Don't repeat publish. 4885 if (newInetCondition == mDefaultInetConditionPublished) return; 4886 4887 mDefaultInetConditionPublished = newInetCondition; 4888 sendInetConditionBroadcast(nai.networkInfo); 4889 } 4890 4891 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4892 if (mLockdownTracker != null) { 4893 if (nai != null && nai.isVPN()) { 4894 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4895 } else { 4896 mLockdownTracker.onNetworkInfoChanged(); 4897 } 4898 } 4899 } 4900 4901 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4902 NetworkInfo.State state = newInfo.getState(); 4903 NetworkInfo oldInfo = null; 4904 final int oldScore = networkAgent.getCurrentScore(); 4905 synchronized (networkAgent) { 4906 oldInfo = networkAgent.networkInfo; 4907 networkAgent.networkInfo = newInfo; 4908 } 4909 notifyLockdownVpn(networkAgent); 4910 4911 if (oldInfo != null && oldInfo.getState() == state) { 4912 if (oldInfo.isRoaming() != newInfo.isRoaming()) { 4913 if (VDBG) log("roaming status changed, notifying NetworkStatsService"); 4914 notifyIfacesChangedForNetworkStats(); 4915 } else if (VDBG) log("ignoring duplicate network state non-change"); 4916 // In either case, no further work should be needed. 4917 return; 4918 } 4919 if (DBG) { 4920 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4921 (oldInfo == null ? "null" : oldInfo.getState()) + 4922 " to " + state); 4923 } 4924 4925 if (!networkAgent.created 4926 && (state == NetworkInfo.State.CONNECTED 4927 || (state == NetworkInfo.State.CONNECTING && networkAgent.isVPN()))) { 4928 try { 4929 // This should never fail. Specifying an already in use NetID will cause failure. 4930 if (networkAgent.isVPN()) { 4931 mNetd.createVirtualNetwork(networkAgent.network.netId, 4932 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4933 (networkAgent.networkMisc == null || 4934 !networkAgent.networkMisc.allowBypass)); 4935 } else { 4936 mNetd.createPhysicalNetwork(networkAgent.network.netId, 4937 networkAgent.networkCapabilities.hasCapability( 4938 NET_CAPABILITY_NOT_RESTRICTED) ? 4939 null : NetworkManagementService.PERMISSION_SYSTEM); 4940 } 4941 } catch (Exception e) { 4942 loge("Error creating network " + networkAgent.network.netId + ": " 4943 + e.getMessage()); 4944 return; 4945 } 4946 networkAgent.created = true; 4947 } 4948 4949 if (!networkAgent.everConnected && state == NetworkInfo.State.CONNECTED) { 4950 networkAgent.everConnected = true; 4951 4952 updateLinkProperties(networkAgent, null); 4953 notifyIfacesChangedForNetworkStats(); 4954 4955 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4956 scheduleUnvalidatedPrompt(networkAgent); 4957 4958 if (networkAgent.isVPN()) { 4959 // Temporarily disable the default proxy (not global). 4960 synchronized (mProxyLock) { 4961 if (!mDefaultProxyDisabled) { 4962 mDefaultProxyDisabled = true; 4963 if (mGlobalProxy == null && mDefaultProxy != null) { 4964 sendProxyBroadcast(null); 4965 } 4966 } 4967 } 4968 // TODO: support proxy per network. 4969 } 4970 4971 // Whether a particular NetworkRequest listen should cause signal strength thresholds to 4972 // be communicated to a particular NetworkAgent depends only on the network's immutable, 4973 // capabilities, so it only needs to be done once on initial connect, not every time the 4974 // network's capabilities change. Note that we do this before rematching the network, 4975 // so we could decide to tear it down immediately afterwards. That's fine though - on 4976 // disconnection NetworkAgents should stop any signal strength monitoring they have been 4977 // doing. 4978 updateSignalStrengthThresholds(networkAgent, "CONNECT", null); 4979 4980 // Consider network even though it is not yet validated. 4981 rematchNetworkAndRequests(networkAgent, ReapUnvalidatedNetworks.REAP); 4982 4983 // This has to happen after matching the requests, because callbacks are just requests. 4984 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4985 } else if (state == NetworkInfo.State.DISCONNECTED) { 4986 networkAgent.asyncChannel.disconnect(); 4987 if (networkAgent.isVPN()) { 4988 synchronized (mProxyLock) { 4989 if (mDefaultProxyDisabled) { 4990 mDefaultProxyDisabled = false; 4991 if (mGlobalProxy == null && mDefaultProxy != null) { 4992 sendProxyBroadcast(mDefaultProxy); 4993 } 4994 } 4995 } 4996 } 4997 } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) || 4998 state == NetworkInfo.State.SUSPENDED) { 4999 // going into or coming out of SUSPEND: rescore and notify 5000 if (networkAgent.getCurrentScore() != oldScore) { 5001 rematchAllNetworksAndRequests(networkAgent, oldScore); 5002 } 5003 notifyNetworkCallbacks(networkAgent, (state == NetworkInfo.State.SUSPENDED ? 5004 ConnectivityManager.CALLBACK_SUSPENDED : 5005 ConnectivityManager.CALLBACK_RESUMED)); 5006 mLegacyTypeTracker.update(networkAgent); 5007 } 5008 } 5009 5010 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 5011 if (VDBG) log("updateNetworkScore for " + nai.name() + " to " + score); 5012 if (score < 0) { 5013 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 5014 "). Bumping score to min of 0"); 5015 score = 0; 5016 } 5017 5018 final int oldScore = nai.getCurrentScore(); 5019 nai.setCurrentScore(score); 5020 5021 rematchAllNetworksAndRequests(nai, oldScore); 5022 5023 sendUpdatedScoreToFactories(nai); 5024 } 5025 5026 // notify only this one new request of the current state 5027 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 5028 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 5029 // TODO - read state from monitor to decide what to send. 5030// if (nai.networkMonitor.isLingering()) { 5031// notifyType = NetworkCallbacks.LOSING; 5032// } else if (nai.networkMonitor.isEvaluating()) { 5033// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 5034// } 5035 if (nri.mPendingIntent == null) { 5036 callCallbackForRequest(nri, nai, notifyType); 5037 } else { 5038 sendPendingIntentForRequest(nri, nai, notifyType); 5039 } 5040 } 5041 5042 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, DetailedState state, int type) { 5043 // The NetworkInfo we actually send out has no bearing on the real 5044 // state of affairs. For example, if the default connection is mobile, 5045 // and a request for HIPRI has just gone away, we need to pretend that 5046 // HIPRI has just disconnected. So we need to set the type to HIPRI and 5047 // the state to DISCONNECTED, even though the network is of type MOBILE 5048 // and is still connected. 5049 NetworkInfo info = new NetworkInfo(nai.networkInfo); 5050 info.setType(type); 5051 if (state != DetailedState.DISCONNECTED) { 5052 info.setDetailedState(state, null, info.getExtraInfo()); 5053 sendConnectedBroadcast(info); 5054 } else { 5055 info.setDetailedState(state, info.getReason(), info.getExtraInfo()); 5056 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 5057 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 5058 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 5059 if (info.isFailover()) { 5060 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 5061 nai.networkInfo.setFailover(false); 5062 } 5063 if (info.getReason() != null) { 5064 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 5065 } 5066 if (info.getExtraInfo() != null) { 5067 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 5068 } 5069 NetworkAgentInfo newDefaultAgent = null; 5070 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 5071 newDefaultAgent = getDefaultNetwork(); 5072 if (newDefaultAgent != null) { 5073 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 5074 newDefaultAgent.networkInfo); 5075 } else { 5076 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 5077 } 5078 } 5079 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 5080 mDefaultInetConditionPublished); 5081 sendStickyBroadcast(intent); 5082 if (newDefaultAgent != null) { 5083 sendConnectedBroadcast(newDefaultAgent.networkInfo); 5084 } 5085 } 5086 } 5087 5088 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 5089 if (VDBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 5090 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 5091 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 5092 NetworkRequestInfo nri = mNetworkRequests.get(nr); 5093 if (VDBG) log(" sending notification for " + nr); 5094 if (nri.mPendingIntent == null) { 5095 callCallbackForRequest(nri, networkAgent, notifyType); 5096 } else { 5097 sendPendingIntentForRequest(nri, networkAgent, notifyType); 5098 } 5099 } 5100 } 5101 5102 private String notifyTypeToName(int notifyType) { 5103 switch (notifyType) { 5104 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 5105 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 5106 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 5107 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 5108 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 5109 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 5110 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 5111 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 5112 } 5113 return "UNKNOWN"; 5114 } 5115 5116 /** 5117 * Notify NetworkStatsService that the set of active ifaces has changed, or that one of the 5118 * properties tracked by NetworkStatsService on an active iface has changed. 5119 */ 5120 private void notifyIfacesChangedForNetworkStats() { 5121 try { 5122 mStatsService.forceUpdateIfaces(); 5123 } catch (Exception ignored) { 5124 } 5125 } 5126 5127 @Override 5128 public boolean addVpnAddress(String address, int prefixLength) { 5129 throwIfLockdownEnabled(); 5130 int user = UserHandle.getUserId(Binder.getCallingUid()); 5131 synchronized (mVpns) { 5132 return mVpns.get(user).addAddress(address, prefixLength); 5133 } 5134 } 5135 5136 @Override 5137 public boolean removeVpnAddress(String address, int prefixLength) { 5138 throwIfLockdownEnabled(); 5139 int user = UserHandle.getUserId(Binder.getCallingUid()); 5140 synchronized (mVpns) { 5141 return mVpns.get(user).removeAddress(address, prefixLength); 5142 } 5143 } 5144 5145 @Override 5146 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 5147 throwIfLockdownEnabled(); 5148 int user = UserHandle.getUserId(Binder.getCallingUid()); 5149 boolean success; 5150 synchronized (mVpns) { 5151 success = mVpns.get(user).setUnderlyingNetworks(networks); 5152 } 5153 if (success) { 5154 notifyIfacesChangedForNetworkStats(); 5155 } 5156 return success; 5157 } 5158 5159 @Override 5160 public String getCaptivePortalServerUrl() { 5161 return NetworkMonitor.getCaptivePortalServerUrl(mContext); 5162 } 5163 5164 @Override 5165 public void startNattKeepalive(Network network, int intervalSeconds, Messenger messenger, 5166 IBinder binder, String srcAddr, int srcPort, String dstAddr) { 5167 enforceKeepalivePermission(); 5168 mKeepaliveTracker.startNattKeepalive( 5169 getNetworkAgentInfoForNetwork(network), 5170 intervalSeconds, messenger, binder, 5171 srcAddr, srcPort, dstAddr, ConnectivityManager.PacketKeepalive.NATT_PORT); 5172 } 5173 5174 @Override 5175 public void stopKeepalive(Network network, int slot) { 5176 mHandler.sendMessage(mHandler.obtainMessage( 5177 NetworkAgent.CMD_STOP_PACKET_KEEPALIVE, slot, PacketKeepalive.SUCCESS, network)); 5178 } 5179 5180 @Override 5181 public void factoryReset() { 5182 enforceConnectivityInternalPermission(); 5183 5184 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 5185 return; 5186 } 5187 5188 final int userId = UserHandle.getCallingUserId(); 5189 5190 // Turn airplane mode off 5191 setAirplaneMode(false); 5192 5193 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 5194 // Untether 5195 for (String tether : getTetheredIfaces()) { 5196 untether(tether); 5197 } 5198 } 5199 5200 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 5201 // Remove always-on package 5202 synchronized (mVpns) { 5203 final String alwaysOnPackage = getAlwaysOnVpnPackage(userId); 5204 if (alwaysOnPackage != null) { 5205 setAlwaysOnVpnPackage(userId, null, false); 5206 setVpnPackageAuthorization(alwaysOnPackage, userId, false); 5207 } 5208 } 5209 5210 // Turn VPN off 5211 VpnConfig vpnConfig = getVpnConfig(userId); 5212 if (vpnConfig != null) { 5213 if (vpnConfig.legacy) { 5214 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 5215 } else { 5216 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 5217 // in the future without user intervention. 5218 setVpnPackageAuthorization(vpnConfig.user, userId, false); 5219 5220 prepareVpn(null, VpnConfig.LEGACY_VPN, userId); 5221 } 5222 } 5223 } 5224 } 5225 5226 @VisibleForTesting 5227 public NetworkMonitor createNetworkMonitor(Context context, Handler handler, 5228 NetworkAgentInfo nai, NetworkRequest defaultRequest) { 5229 return new NetworkMonitor(context, handler, nai, defaultRequest); 5230 } 5231 5232 private static void logDefaultNetworkEvent(NetworkAgentInfo newNai, NetworkAgentInfo prevNai) { 5233 int newNetid = NETID_UNSET; 5234 int prevNetid = NETID_UNSET; 5235 int[] transports = new int[0]; 5236 boolean hadIPv4 = false; 5237 boolean hadIPv6 = false; 5238 5239 if (newNai != null) { 5240 newNetid = newNai.network.netId; 5241 transports = newNai.networkCapabilities.getTransportTypes(); 5242 } 5243 if (prevNai != null) { 5244 prevNetid = prevNai.network.netId; 5245 final LinkProperties lp = prevNai.linkProperties; 5246 hadIPv4 = lp.hasIPv4Address() && lp.hasIPv4DefaultRoute(); 5247 hadIPv6 = lp.hasGlobalIPv6Address() && lp.hasIPv6DefaultRoute(); 5248 } 5249 5250 DefaultNetworkEvent.logEvent(newNetid, transports, prevNetid, hadIPv4, hadIPv6); 5251 } 5252} 5253