ConnectivityService.java revision 46c4fc357ce8e686b6e7c2adda573e9870a8221f
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 final ArrayDeque<Pair<Network,ReadOnlyLocalLog>> mValidationLogs = 435 new ArrayDeque<Pair<Network,ReadOnlyLocalLog>>(MAX_VALIDATION_LOGS); 436 437 private void addValidationLogs(ReadOnlyLocalLog log, Network network) { 438 synchronized(mValidationLogs) { 439 while (mValidationLogs.size() >= MAX_VALIDATION_LOGS) { 440 mValidationLogs.removeLast(); 441 } 442 mValidationLogs.addFirst(new Pair(network, log)); 443 } 444 } 445 446 /** 447 * Implements support for the legacy "one network per network type" model. 448 * 449 * We used to have a static array of NetworkStateTrackers, one for each 450 * network type, but that doesn't work any more now that we can have, 451 * for example, more that one wifi network. This class stores all the 452 * NetworkAgentInfo objects that support a given type, but the legacy 453 * API will only see the first one. 454 * 455 * It serves two main purposes: 456 * 457 * 1. Provide information about "the network for a given type" (since this 458 * API only supports one). 459 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 460 * the first network for a given type changes, or if the default network 461 * changes. 462 */ 463 private class LegacyTypeTracker { 464 465 private static final boolean DBG = true; 466 private static final boolean VDBG = false; 467 468 /** 469 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 470 * Each list holds references to all NetworkAgentInfos that are used to 471 * satisfy requests for that network type. 472 * 473 * This array is built out at startup such that an unsupported network 474 * doesn't get an ArrayList instance, making this a tristate: 475 * unsupported, supported but not active and active. 476 * 477 * The actual lists are populated when we scan the network types that 478 * are supported on this device. 479 */ 480 private ArrayList<NetworkAgentInfo> mTypeLists[]; 481 482 public LegacyTypeTracker() { 483 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 484 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 485 } 486 487 public void addSupportedType(int type) { 488 if (mTypeLists[type] != null) { 489 throw new IllegalStateException( 490 "legacy list for type " + type + "already initialized"); 491 } 492 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 493 } 494 495 public boolean isTypeSupported(int type) { 496 return isNetworkTypeValid(type) && mTypeLists[type] != null; 497 } 498 499 public NetworkAgentInfo getNetworkForType(int type) { 500 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 501 return mTypeLists[type].get(0); 502 } else { 503 return null; 504 } 505 } 506 507 private void maybeLogBroadcast(NetworkAgentInfo nai, DetailedState state, int type, 508 boolean isDefaultNetwork) { 509 if (DBG) { 510 log("Sending " + state + 511 " broadcast for type " + type + " " + nai.name() + 512 " isDefaultNetwork=" + isDefaultNetwork); 513 } 514 } 515 516 /** Adds the given network to the specified legacy type list. */ 517 public void add(int type, NetworkAgentInfo nai) { 518 if (!isTypeSupported(type)) { 519 return; // Invalid network type. 520 } 521 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 522 523 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 524 if (list.contains(nai)) { 525 return; 526 } 527 528 list.add(nai); 529 530 // Send a broadcast if this is the first network of its type or if it's the default. 531 final boolean isDefaultNetwork = isDefaultNetwork(nai); 532 if (list.size() == 1 || isDefaultNetwork) { 533 maybeLogBroadcast(nai, DetailedState.CONNECTED, type, isDefaultNetwork); 534 sendLegacyNetworkBroadcast(nai, DetailedState.CONNECTED, type); 535 } 536 } 537 538 /** Removes the given network from the specified legacy type list. */ 539 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 540 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 541 if (list == null || list.isEmpty()) { 542 return; 543 } 544 545 final boolean wasFirstNetwork = list.get(0).equals(nai); 546 547 if (!list.remove(nai)) { 548 return; 549 } 550 551 final DetailedState state = DetailedState.DISCONNECTED; 552 553 if (wasFirstNetwork || wasDefault) { 554 maybeLogBroadcast(nai, state, type, wasDefault); 555 sendLegacyNetworkBroadcast(nai, state, type); 556 } 557 558 if (!list.isEmpty() && wasFirstNetwork) { 559 if (DBG) log("Other network available for type " + type + 560 ", sending connected broadcast"); 561 final NetworkAgentInfo replacement = list.get(0); 562 maybeLogBroadcast(replacement, state, type, isDefaultNetwork(replacement)); 563 sendLegacyNetworkBroadcast(replacement, state, type); 564 } 565 } 566 567 /** Removes the given network from all legacy type lists. */ 568 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 569 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 570 for (int type = 0; type < mTypeLists.length; type++) { 571 remove(type, nai, wasDefault); 572 } 573 } 574 575 // send out another legacy broadcast - currently only used for suspend/unsuspend 576 // toggle 577 public void update(NetworkAgentInfo nai) { 578 final boolean isDefault = isDefaultNetwork(nai); 579 final DetailedState state = nai.networkInfo.getDetailedState(); 580 for (int type = 0; type < mTypeLists.length; type++) { 581 final ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 582 final boolean contains = (list != null && list.contains(nai)); 583 final boolean isFirst = (list != null && list.size() > 0 && nai == list.get(0)); 584 if (isFirst || (contains && isDefault)) { 585 maybeLogBroadcast(nai, state, type, isDefault); 586 sendLegacyNetworkBroadcast(nai, state, type); 587 } 588 } 589 } 590 591 private String naiToString(NetworkAgentInfo nai) { 592 String name = (nai != null) ? nai.name() : "null"; 593 String state = (nai.networkInfo != null) ? 594 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 595 "???/???"; 596 return name + " " + state; 597 } 598 599 public void dump(IndentingPrintWriter pw) { 600 pw.println("mLegacyTypeTracker:"); 601 pw.increaseIndent(); 602 pw.print("Supported types:"); 603 for (int type = 0; type < mTypeLists.length; type++) { 604 if (mTypeLists[type] != null) pw.print(" " + type); 605 } 606 pw.println(); 607 pw.println("Current state:"); 608 pw.increaseIndent(); 609 for (int type = 0; type < mTypeLists.length; type++) { 610 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 611 for (NetworkAgentInfo nai : mTypeLists[type]) { 612 pw.println(type + " " + naiToString(nai)); 613 } 614 } 615 pw.decreaseIndent(); 616 pw.decreaseIndent(); 617 pw.println(); 618 } 619 } 620 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 621 622 @VisibleForTesting 623 protected HandlerThread createHandlerThread() { 624 return new HandlerThread("ConnectivityServiceThread"); 625 } 626 627 public ConnectivityService(Context context, INetworkManagementService netManager, 628 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 629 if (DBG) log("ConnectivityService starting up"); 630 631 mDefaultRequest = createInternetRequestForTransport(-1); 632 NetworkRequestInfo defaultNRI = new NetworkRequestInfo(null, mDefaultRequest, 633 new Binder(), NetworkRequestType.REQUEST); 634 mNetworkRequests.put(mDefaultRequest, defaultNRI); 635 mNetworkRequestInfoLogs.log("REGISTER " + defaultNRI); 636 637 mDefaultMobileDataRequest = createInternetRequestForTransport( 638 NetworkCapabilities.TRANSPORT_CELLULAR); 639 640 mHandlerThread = createHandlerThread(); 641 mHandlerThread.start(); 642 mHandler = new InternalHandler(mHandlerThread.getLooper()); 643 mTrackerHandler = new NetworkStateTrackerHandler(mHandlerThread.getLooper()); 644 645 // setup our unique device name 646 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 647 String id = Settings.Secure.getString(context.getContentResolver(), 648 Settings.Secure.ANDROID_ID); 649 if (id != null && id.length() > 0) { 650 String name = new String("android-").concat(id); 651 SystemProperties.set("net.hostname", name); 652 } 653 } 654 655 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 656 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 657 658 mContext = checkNotNull(context, "missing Context"); 659 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 660 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 661 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 662 mKeyStore = KeyStore.getInstance(); 663 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 664 665 try { 666 mPolicyManager.setConnectivityListener(mPolicyListener); 667 mRestrictBackground = mPolicyManager.getRestrictBackground(); 668 } catch (RemoteException e) { 669 // ouch, no rules updates means some processes may never get network 670 loge("unable to register INetworkPolicyListener" + e.toString()); 671 } 672 673 final PowerManager powerManager = (PowerManager) context.getSystemService( 674 Context.POWER_SERVICE); 675 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 676 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 677 com.android.internal.R.integer.config_networkTransitionTimeout); 678 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 679 680 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 681 682 // TODO: What is the "correct" way to do determine if this is a wifi only device? 683 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 684 log("wifiOnly=" + wifiOnly); 685 String[] naStrings = context.getResources().getStringArray( 686 com.android.internal.R.array.networkAttributes); 687 for (String naString : naStrings) { 688 try { 689 NetworkConfig n = new NetworkConfig(naString); 690 if (VDBG) log("naString=" + naString + " config=" + n); 691 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 692 loge("Error in networkAttributes - ignoring attempt to define type " + 693 n.type); 694 continue; 695 } 696 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 697 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 698 n.type); 699 continue; 700 } 701 if (mNetConfigs[n.type] != null) { 702 loge("Error in networkAttributes - ignoring attempt to redefine type " + 703 n.type); 704 continue; 705 } 706 mLegacyTypeTracker.addSupportedType(n.type); 707 708 mNetConfigs[n.type] = n; 709 mNetworksDefined++; 710 } catch(Exception e) { 711 // ignore it - leave the entry null 712 } 713 } 714 715 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 716 if (mNetConfigs[TYPE_VPN] == null) { 717 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 718 // don't need to add TYPE_VPN to mNetConfigs. 719 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 720 mNetworksDefined++; // used only in the log() statement below. 721 } 722 723 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 724 725 mProtectedNetworks = new ArrayList<Integer>(); 726 int[] protectedNetworks = context.getResources().getIntArray( 727 com.android.internal.R.array.config_protectedNetworks); 728 for (int p : protectedNetworks) { 729 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 730 mProtectedNetworks.add(p); 731 } else { 732 if (DBG) loge("Ignoring protectedNetwork " + p); 733 } 734 } 735 736 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 737 && SystemProperties.get("ro.build.type").equals("eng"); 738 739 mTethering = new Tethering(mContext, mNetd, statsService); 740 741 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 742 743 //set up the listener for user state for creating user VPNs 744 IntentFilter intentFilter = new IntentFilter(); 745 intentFilter.addAction(Intent.ACTION_USER_STARTED); 746 intentFilter.addAction(Intent.ACTION_USER_STOPPED); 747 intentFilter.addAction(Intent.ACTION_USER_ADDED); 748 intentFilter.addAction(Intent.ACTION_USER_REMOVED); 749 intentFilter.addAction(Intent.ACTION_USER_UNLOCKED); 750 mContext.registerReceiverAsUser( 751 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 752 753 try { 754 mNetd.registerObserver(mTethering); 755 mNetd.registerObserver(mDataActivityObserver); 756 } catch (RemoteException e) { 757 loge("Error registering observer :" + e); 758 } 759 760 if (DBG) { 761 mInetLog = new ArrayList(); 762 } 763 764 mSettingsObserver = new SettingsObserver(mContext, mHandler); 765 registerSettingsCallbacks(); 766 767 mDataConnectionStats = new DataConnectionStats(mContext); 768 mDataConnectionStats.startMonitoring(); 769 770 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 771 772 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 773 774 mKeepaliveTracker = new KeepaliveTracker(mHandler); 775 } 776 777 private NetworkRequest createInternetRequestForTransport(int transportType) { 778 NetworkCapabilities netCap = new NetworkCapabilities(); 779 netCap.addCapability(NET_CAPABILITY_INTERNET); 780 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 781 if (transportType > -1) { 782 netCap.addTransportType(transportType); 783 } 784 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 785 } 786 787 private void handleMobileDataAlwaysOn() { 788 final boolean enable = (Settings.Global.getInt( 789 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 790 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 791 if (enable == isEnabled) { 792 return; // Nothing to do. 793 } 794 795 if (enable) { 796 handleRegisterNetworkRequest(new NetworkRequestInfo( 797 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestType.REQUEST)); 798 } else { 799 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 800 } 801 } 802 803 private void registerSettingsCallbacks() { 804 // Watch for global HTTP proxy changes. 805 mSettingsObserver.observe( 806 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 807 EVENT_APPLY_GLOBAL_HTTP_PROXY); 808 809 // Watch for whether or not to keep mobile data always on. 810 mSettingsObserver.observe( 811 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 812 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 813 } 814 815 private synchronized int nextNetworkRequestId() { 816 return mNextNetworkRequestId++; 817 } 818 819 @VisibleForTesting 820 protected int reserveNetId() { 821 synchronized (mNetworkForNetId) { 822 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 823 int netId = mNextNetId; 824 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 825 // Make sure NetID unused. http://b/16815182 826 if (!mNetIdInUse.get(netId)) { 827 mNetIdInUse.put(netId, true); 828 return netId; 829 } 830 } 831 } 832 throw new IllegalStateException("No free netIds"); 833 } 834 835 private NetworkState getFilteredNetworkState(int networkType, int uid, boolean ignoreBlocked) { 836 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 837 final NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 838 final NetworkState state; 839 if (nai != null) { 840 state = nai.getNetworkState(); 841 state.networkInfo.setType(networkType); 842 } else { 843 final NetworkInfo info = new NetworkInfo(networkType, 0, 844 getNetworkTypeName(networkType), ""); 845 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 846 info.setIsAvailable(true); 847 state = new NetworkState(info, new LinkProperties(), new NetworkCapabilities(), 848 null, null, null); 849 } 850 filterNetworkStateForUid(state, uid, ignoreBlocked); 851 return state; 852 } else { 853 return NetworkState.EMPTY; 854 } 855 } 856 857 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 858 if (network == null) { 859 return null; 860 } 861 synchronized (mNetworkForNetId) { 862 return mNetworkForNetId.get(network.netId); 863 } 864 } 865 866 private Network[] getVpnUnderlyingNetworks(int uid) { 867 if (!mLockdownEnabled) { 868 int user = UserHandle.getUserId(uid); 869 synchronized (mVpns) { 870 Vpn vpn = mVpns.get(user); 871 if (vpn != null && vpn.appliesToUid(uid)) { 872 return vpn.getUnderlyingNetworks(); 873 } 874 } 875 } 876 return null; 877 } 878 879 private NetworkState getUnfilteredActiveNetworkState(int uid) { 880 NetworkAgentInfo nai = getDefaultNetwork(); 881 882 final Network[] networks = getVpnUnderlyingNetworks(uid); 883 if (networks != null) { 884 // getUnderlyingNetworks() returns: 885 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 886 // empty array => the VPN explicitly said "no default network". 887 // non-empty array => the VPN specified one or more default networks; we use the 888 // first one. 889 if (networks.length > 0) { 890 nai = getNetworkAgentInfoForNetwork(networks[0]); 891 } else { 892 nai = null; 893 } 894 } 895 896 if (nai != null) { 897 return nai.getNetworkState(); 898 } else { 899 return NetworkState.EMPTY; 900 } 901 } 902 903 /** 904 * Check if UID should be blocked from using the network with the given LinkProperties. 905 */ 906 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid, 907 boolean ignoreBlocked) { 908 // Networks aren't blocked when ignoring blocked status 909 if (ignoreBlocked) return false; 910 // Networks are never blocked for system services 911 if (uid < Process.FIRST_APPLICATION_UID) return false; 912 913 final boolean networkMetered; 914 final int uidRules; 915 916 final String iface = (lp == null ? "" : lp.getInterfaceName()); 917 synchronized (mRulesLock) { 918 networkMetered = mMeteredIfaces.contains(iface); 919 uidRules = mUidRules.get(uid, RULE_NONE); 920 } 921 922 switch (uidRules) { 923 case RULE_ALLOW_ALL: 924 case RULE_ALLOW_METERED: 925 case RULE_TEMPORARY_ALLOW_METERED: 926 return false; 927 case RULE_REJECT_METERED: 928 return networkMetered; 929 case RULE_REJECT_ALL: 930 return true; 931 case RULE_NONE: 932 default: 933 // When background data is restricted device-wide, the default 934 // behavior for apps should be like RULE_REJECT_METERED 935 return mRestrictBackground ? networkMetered : false; 936 } 937 } 938 939 private void maybeLogBlockedNetworkInfo(NetworkInfo ni, int uid) { 940 if (ni == null || !LOGD_BLOCKED_NETWORKINFO) return; 941 boolean removed = false; 942 boolean added = false; 943 synchronized (mBlockedAppUids) { 944 if (ni.getDetailedState() == DetailedState.BLOCKED && mBlockedAppUids.add(uid)) { 945 added = true; 946 } else if (ni.isConnected() && mBlockedAppUids.remove(uid)) { 947 removed = true; 948 } 949 } 950 if (added) log("Returning blocked NetworkInfo to uid=" + uid); 951 else if (removed) log("Returning unblocked NetworkInfo to uid=" + uid); 952 } 953 954 /** 955 * Apply any relevant filters to {@link NetworkState} for the given UID. For 956 * example, this may mark the network as {@link DetailedState#BLOCKED} based 957 * on {@link #isNetworkWithLinkPropertiesBlocked}, or 958 * {@link NetworkInfo#isMetered()} based on network policies. 959 */ 960 private void filterNetworkStateForUid(NetworkState state, int uid, boolean ignoreBlocked) { 961 if (state == null || state.networkInfo == null || state.linkProperties == null) return; 962 963 if (isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid, ignoreBlocked)) { 964 state.networkInfo.setDetailedState(DetailedState.BLOCKED, null, null); 965 } 966 if (mLockdownTracker != null) { 967 mLockdownTracker.augmentNetworkInfo(state.networkInfo); 968 } 969 970 // TODO: apply metered state closer to NetworkAgentInfo 971 final long token = Binder.clearCallingIdentity(); 972 try { 973 state.networkInfo.setMetered(mPolicyManager.isNetworkMetered(state)); 974 } catch (RemoteException e) { 975 } finally { 976 Binder.restoreCallingIdentity(token); 977 } 978 } 979 980 /** 981 * Return NetworkInfo for the active (i.e., connected) network interface. 982 * It is assumed that at most one network is active at a time. If more 983 * than one is active, it is indeterminate which will be returned. 984 * @return the info for the active network, or {@code null} if none is 985 * active 986 */ 987 @Override 988 public NetworkInfo getActiveNetworkInfo() { 989 enforceAccessPermission(); 990 final int uid = Binder.getCallingUid(); 991 final NetworkState state = getUnfilteredActiveNetworkState(uid); 992 filterNetworkStateForUid(state, uid, false); 993 maybeLogBlockedNetworkInfo(state.networkInfo, uid); 994 return state.networkInfo; 995 } 996 997 @Override 998 public Network getActiveNetwork() { 999 enforceAccessPermission(); 1000 return getActiveNetworkForUidInternal(Binder.getCallingUid(), false); 1001 } 1002 1003 @Override 1004 public Network getActiveNetworkForUid(int uid, boolean ignoreBlocked) { 1005 enforceConnectivityInternalPermission(); 1006 return getActiveNetworkForUidInternal(uid, ignoreBlocked); 1007 } 1008 1009 private Network getActiveNetworkForUidInternal(final int uid, boolean ignoreBlocked) { 1010 final int user = UserHandle.getUserId(uid); 1011 int vpnNetId = NETID_UNSET; 1012 synchronized (mVpns) { 1013 final Vpn vpn = mVpns.get(user); 1014 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 1015 } 1016 NetworkAgentInfo nai; 1017 if (vpnNetId != NETID_UNSET) { 1018 synchronized (mNetworkForNetId) { 1019 nai = mNetworkForNetId.get(vpnNetId); 1020 } 1021 if (nai != null) return nai.network; 1022 } 1023 nai = getDefaultNetwork(); 1024 if (nai != null 1025 && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid, ignoreBlocked)) { 1026 nai = null; 1027 } 1028 return nai != null ? nai.network : null; 1029 } 1030 1031 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1032 enforceAccessPermission(); 1033 final int uid = Binder.getCallingUid(); 1034 NetworkState state = getUnfilteredActiveNetworkState(uid); 1035 return state.networkInfo; 1036 } 1037 1038 @Override 1039 public NetworkInfo getActiveNetworkInfoForUid(int uid, boolean ignoreBlocked) { 1040 enforceConnectivityInternalPermission(); 1041 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1042 filterNetworkStateForUid(state, uid, ignoreBlocked); 1043 return state.networkInfo; 1044 } 1045 1046 @Override 1047 public NetworkInfo getNetworkInfo(int networkType) { 1048 enforceAccessPermission(); 1049 final int uid = Binder.getCallingUid(); 1050 if (getVpnUnderlyingNetworks(uid) != null) { 1051 // A VPN is active, so we may need to return one of its underlying networks. This 1052 // information is not available in LegacyTypeTracker, so we have to get it from 1053 // getUnfilteredActiveNetworkState. 1054 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1055 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1056 filterNetworkStateForUid(state, uid, false); 1057 return state.networkInfo; 1058 } 1059 } 1060 final NetworkState state = getFilteredNetworkState(networkType, uid, false); 1061 return state.networkInfo; 1062 } 1063 1064 @Override 1065 public NetworkInfo getNetworkInfoForUid(Network network, int uid, boolean ignoreBlocked) { 1066 enforceAccessPermission(); 1067 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1068 if (nai != null) { 1069 final NetworkState state = nai.getNetworkState(); 1070 filterNetworkStateForUid(state, uid, ignoreBlocked); 1071 return state.networkInfo; 1072 } else { 1073 return null; 1074 } 1075 } 1076 1077 @Override 1078 public NetworkInfo[] getAllNetworkInfo() { 1079 enforceAccessPermission(); 1080 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1081 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1082 networkType++) { 1083 NetworkInfo info = getNetworkInfo(networkType); 1084 if (info != null) { 1085 result.add(info); 1086 } 1087 } 1088 return result.toArray(new NetworkInfo[result.size()]); 1089 } 1090 1091 @Override 1092 public Network getNetworkForType(int networkType) { 1093 enforceAccessPermission(); 1094 final int uid = Binder.getCallingUid(); 1095 NetworkState state = getFilteredNetworkState(networkType, uid, false); 1096 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid, false)) { 1097 return state.network; 1098 } 1099 return null; 1100 } 1101 1102 @Override 1103 public Network[] getAllNetworks() { 1104 enforceAccessPermission(); 1105 synchronized (mNetworkForNetId) { 1106 final Network[] result = new Network[mNetworkForNetId.size()]; 1107 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1108 result[i] = mNetworkForNetId.valueAt(i).network; 1109 } 1110 return result; 1111 } 1112 } 1113 1114 @Override 1115 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1116 // The basic principle is: if an app's traffic could possibly go over a 1117 // network, without the app doing anything multinetwork-specific, 1118 // (hence, by "default"), then include that network's capabilities in 1119 // the array. 1120 // 1121 // In the normal case, app traffic only goes over the system's default 1122 // network connection, so that's the only network returned. 1123 // 1124 // With a VPN in force, some app traffic may go into the VPN, and thus 1125 // over whatever underlying networks the VPN specifies, while other app 1126 // traffic may go over the system default network (e.g.: a split-tunnel 1127 // VPN, or an app disallowed by the VPN), so the set of networks 1128 // returned includes the VPN's underlying networks and the system 1129 // default. 1130 enforceAccessPermission(); 1131 1132 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1133 1134 NetworkAgentInfo nai = getDefaultNetwork(); 1135 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1136 if (nc != null) { 1137 result.put(nai.network, nc); 1138 } 1139 1140 if (!mLockdownEnabled) { 1141 synchronized (mVpns) { 1142 Vpn vpn = mVpns.get(userId); 1143 if (vpn != null) { 1144 Network[] networks = vpn.getUnderlyingNetworks(); 1145 if (networks != null) { 1146 for (Network network : networks) { 1147 nai = getNetworkAgentInfoForNetwork(network); 1148 nc = getNetworkCapabilitiesInternal(nai); 1149 if (nc != null) { 1150 result.put(network, nc); 1151 } 1152 } 1153 } 1154 } 1155 } 1156 } 1157 1158 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1159 out = result.values().toArray(out); 1160 return out; 1161 } 1162 1163 @Override 1164 public boolean isNetworkSupported(int networkType) { 1165 enforceAccessPermission(); 1166 return mLegacyTypeTracker.isTypeSupported(networkType); 1167 } 1168 1169 /** 1170 * Return LinkProperties for the active (i.e., connected) default 1171 * network interface. It is assumed that at most one default network 1172 * is active at a time. If more than one is active, it is indeterminate 1173 * which will be returned. 1174 * @return the ip properties for the active network, or {@code null} if 1175 * none is active 1176 */ 1177 @Override 1178 public LinkProperties getActiveLinkProperties() { 1179 enforceAccessPermission(); 1180 final int uid = Binder.getCallingUid(); 1181 NetworkState state = getUnfilteredActiveNetworkState(uid); 1182 return state.linkProperties; 1183 } 1184 1185 @Override 1186 public LinkProperties getLinkPropertiesForType(int networkType) { 1187 enforceAccessPermission(); 1188 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1189 if (nai != null) { 1190 synchronized (nai) { 1191 return new LinkProperties(nai.linkProperties); 1192 } 1193 } 1194 return null; 1195 } 1196 1197 // TODO - this should be ALL networks 1198 @Override 1199 public LinkProperties getLinkProperties(Network network) { 1200 enforceAccessPermission(); 1201 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1202 if (nai != null) { 1203 synchronized (nai) { 1204 return new LinkProperties(nai.linkProperties); 1205 } 1206 } 1207 return null; 1208 } 1209 1210 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1211 if (nai != null) { 1212 synchronized (nai) { 1213 if (nai.networkCapabilities != null) { 1214 return new NetworkCapabilities(nai.networkCapabilities); 1215 } 1216 } 1217 } 1218 return null; 1219 } 1220 1221 @Override 1222 public NetworkCapabilities getNetworkCapabilities(Network network) { 1223 enforceAccessPermission(); 1224 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1225 } 1226 1227 @Override 1228 public NetworkState[] getAllNetworkState() { 1229 // Require internal since we're handing out IMSI details 1230 enforceConnectivityInternalPermission(); 1231 1232 final ArrayList<NetworkState> result = Lists.newArrayList(); 1233 for (Network network : getAllNetworks()) { 1234 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1235 if (nai != null) { 1236 result.add(nai.getNetworkState()); 1237 } 1238 } 1239 return result.toArray(new NetworkState[result.size()]); 1240 } 1241 1242 @Override 1243 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1244 enforceAccessPermission(); 1245 final int uid = Binder.getCallingUid(); 1246 final long token = Binder.clearCallingIdentity(); 1247 try { 1248 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1249 if (state.networkInfo != null) { 1250 try { 1251 return mPolicyManager.getNetworkQuotaInfo(state); 1252 } catch (RemoteException e) { 1253 } 1254 } 1255 return null; 1256 } finally { 1257 Binder.restoreCallingIdentity(token); 1258 } 1259 } 1260 1261 @Override 1262 public boolean isActiveNetworkMetered() { 1263 enforceAccessPermission(); 1264 1265 final NetworkInfo info = getActiveNetworkInfo(); 1266 return (info != null) ? info.isMetered() : false; 1267 } 1268 1269 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1270 @Override 1271 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1272 int deviceType = Integer.parseInt(label); 1273 sendDataActivityBroadcast(deviceType, active, tsNanos); 1274 } 1275 }; 1276 1277 /** 1278 * Ensure that a network route exists to deliver traffic to the specified 1279 * host via the specified network interface. 1280 * @param networkType the type of the network over which traffic to the 1281 * specified host is to be routed 1282 * @param hostAddress the IP address of the host to which the route is 1283 * desired 1284 * @return {@code true} on success, {@code false} on failure 1285 */ 1286 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1287 enforceChangePermission(); 1288 if (mProtectedNetworks.contains(networkType)) { 1289 enforceConnectivityInternalPermission(); 1290 } 1291 1292 InetAddress addr; 1293 try { 1294 addr = InetAddress.getByAddress(hostAddress); 1295 } catch (UnknownHostException e) { 1296 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1297 return false; 1298 } 1299 1300 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1301 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1302 return false; 1303 } 1304 1305 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1306 if (nai == null) { 1307 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1308 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1309 } else { 1310 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1311 } 1312 return false; 1313 } 1314 1315 DetailedState netState; 1316 synchronized (nai) { 1317 netState = nai.networkInfo.getDetailedState(); 1318 } 1319 1320 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1321 if (VDBG) { 1322 log("requestRouteToHostAddress on down network " 1323 + "(" + networkType + ") - dropped" 1324 + " netState=" + netState); 1325 } 1326 return false; 1327 } 1328 1329 final int uid = Binder.getCallingUid(); 1330 final long token = Binder.clearCallingIdentity(); 1331 try { 1332 LinkProperties lp; 1333 int netId; 1334 synchronized (nai) { 1335 lp = nai.linkProperties; 1336 netId = nai.network.netId; 1337 } 1338 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1339 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1340 return ok; 1341 } finally { 1342 Binder.restoreCallingIdentity(token); 1343 } 1344 } 1345 1346 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1347 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1348 if (bestRoute == null) { 1349 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1350 } else { 1351 String iface = bestRoute.getInterface(); 1352 if (bestRoute.getGateway().equals(addr)) { 1353 // if there is no better route, add the implied hostroute for our gateway 1354 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1355 } else { 1356 // if we will connect to this through another route, add a direct route 1357 // to it's gateway 1358 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1359 } 1360 } 1361 if (DBG) log("Adding legacy route " + bestRoute + 1362 " for UID/PID " + uid + "/" + Binder.getCallingPid()); 1363 try { 1364 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1365 } catch (Exception e) { 1366 // never crash - catch them all 1367 if (DBG) loge("Exception trying to add a route: " + e); 1368 return false; 1369 } 1370 return true; 1371 } 1372 1373 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1374 @Override 1375 public void onUidRulesChanged(int uid, int uidRules) { 1376 // caller is NPMS, since we only register with them 1377 if (LOGD_RULES) { 1378 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1379 } 1380 1381 synchronized (mRulesLock) { 1382 // skip update when we've already applied rules 1383 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1384 if (oldRules == uidRules) return; 1385 1386 mUidRules.put(uid, uidRules); 1387 } 1388 1389 // TODO: notify UID when it has requested targeted updates 1390 } 1391 1392 @Override 1393 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1394 // caller is NPMS, since we only register with them 1395 if (LOGD_RULES) { 1396 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1397 } 1398 1399 synchronized (mRulesLock) { 1400 mMeteredIfaces.clear(); 1401 for (String iface : meteredIfaces) { 1402 mMeteredIfaces.add(iface); 1403 } 1404 } 1405 } 1406 1407 @Override 1408 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1409 // caller is NPMS, since we only register with them 1410 if (LOGD_RULES) { 1411 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1412 } 1413 1414 synchronized (mRulesLock) { 1415 mRestrictBackground = restrictBackground; 1416 } 1417 1418 if (restrictBackground) { 1419 log("onRestrictBackgroundChanged(true): disabling tethering"); 1420 mTethering.untetherAll(); 1421 } 1422 } 1423 1424 @Override 1425 public void onRestrictBackgroundWhitelistChanged(int uid, boolean whitelisted) { 1426 if (LOGD_RULES) { 1427 // caller is NPMS, since we only register with them 1428 log("onRestrictBackgroundWhitelistChanged(uid=" + uid + ", whitelisted=" 1429 + whitelisted + ")"); 1430 } 1431 } 1432 }; 1433 1434 /** 1435 * Require that the caller is either in the same user or has appropriate permission to interact 1436 * across users. 1437 * 1438 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1439 */ 1440 private void enforceCrossUserPermission(int userId) { 1441 if (userId == UserHandle.getCallingUserId()) { 1442 // Not a cross-user call. 1443 return; 1444 } 1445 mContext.enforceCallingOrSelfPermission( 1446 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1447 "ConnectivityService"); 1448 } 1449 1450 private void enforceInternetPermission() { 1451 mContext.enforceCallingOrSelfPermission( 1452 android.Manifest.permission.INTERNET, 1453 "ConnectivityService"); 1454 } 1455 1456 private void enforceAccessPermission() { 1457 mContext.enforceCallingOrSelfPermission( 1458 android.Manifest.permission.ACCESS_NETWORK_STATE, 1459 "ConnectivityService"); 1460 } 1461 1462 private void enforceChangePermission() { 1463 ConnectivityManager.enforceChangePermission(mContext); 1464 } 1465 1466 private void enforceTetherAccessPermission() { 1467 mContext.enforceCallingOrSelfPermission( 1468 android.Manifest.permission.ACCESS_NETWORK_STATE, 1469 "ConnectivityService"); 1470 } 1471 1472 private void enforceConnectivityInternalPermission() { 1473 mContext.enforceCallingOrSelfPermission( 1474 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1475 "ConnectivityService"); 1476 } 1477 1478 private void enforceKeepalivePermission() { 1479 mContext.enforceCallingOrSelfPermission(KeepaliveTracker.PERMISSION, "ConnectivityService"); 1480 } 1481 1482 public void sendConnectedBroadcast(NetworkInfo info) { 1483 enforceConnectivityInternalPermission(); 1484 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1485 } 1486 1487 private void sendInetConditionBroadcast(NetworkInfo info) { 1488 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1489 } 1490 1491 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1492 if (mLockdownTracker != null) { 1493 info = new NetworkInfo(info); 1494 mLockdownTracker.augmentNetworkInfo(info); 1495 } 1496 1497 Intent intent = new Intent(bcastType); 1498 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1499 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1500 if (info.isFailover()) { 1501 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1502 info.setFailover(false); 1503 } 1504 if (info.getReason() != null) { 1505 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1506 } 1507 if (info.getExtraInfo() != null) { 1508 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1509 info.getExtraInfo()); 1510 } 1511 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1512 return intent; 1513 } 1514 1515 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1516 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1517 } 1518 1519 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1520 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1521 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1522 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1523 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1524 final long ident = Binder.clearCallingIdentity(); 1525 try { 1526 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1527 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1528 } finally { 1529 Binder.restoreCallingIdentity(ident); 1530 } 1531 } 1532 1533 private void sendStickyBroadcast(Intent intent) { 1534 synchronized(this) { 1535 if (!mSystemReady) { 1536 mInitialBroadcast = new Intent(intent); 1537 } 1538 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1539 if (VDBG) { 1540 log("sendStickyBroadcast: action=" + intent.getAction()); 1541 } 1542 1543 Bundle options = null; 1544 final long ident = Binder.clearCallingIdentity(); 1545 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1546 final NetworkInfo ni = intent.getParcelableExtra( 1547 ConnectivityManager.EXTRA_NETWORK_INFO); 1548 if (ni.getType() == ConnectivityManager.TYPE_MOBILE_SUPL) { 1549 intent.setAction(ConnectivityManager.CONNECTIVITY_ACTION_SUPL); 1550 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1551 } else { 1552 BroadcastOptions opts = BroadcastOptions.makeBasic(); 1553 opts.setMaxManifestReceiverApiLevel(Build.VERSION_CODES.M); 1554 options = opts.toBundle(); 1555 } 1556 final IBatteryStats bs = BatteryStatsService.getService(); 1557 try { 1558 bs.noteConnectivityChanged(intent.getIntExtra( 1559 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1560 ni != null ? ni.getState().toString() : "?"); 1561 } catch (RemoteException e) { 1562 } 1563 } 1564 try { 1565 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL, options); 1566 } finally { 1567 Binder.restoreCallingIdentity(ident); 1568 } 1569 } 1570 } 1571 1572 void systemReady() { 1573 loadGlobalProxy(); 1574 1575 synchronized(this) { 1576 mSystemReady = true; 1577 if (mInitialBroadcast != null) { 1578 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1579 mInitialBroadcast = null; 1580 } 1581 } 1582 // load the global proxy at startup 1583 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1584 1585 // Try bringing up tracker, but KeyStore won't be ready yet for secondary users so wait 1586 // for user to unlock device too. 1587 updateLockdownVpn(); 1588 1589 // Configure whether mobile data is always on. 1590 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1591 1592 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1593 1594 mPermissionMonitor.startMonitoring(); 1595 } 1596 1597 /** 1598 * Setup data activity tracking for the given network. 1599 * 1600 * Every {@code setupDataActivityTracking} should be paired with a 1601 * {@link #removeDataActivityTracking} for cleanup. 1602 */ 1603 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1604 final String iface = networkAgent.linkProperties.getInterfaceName(); 1605 1606 final int timeout; 1607 int type = ConnectivityManager.TYPE_NONE; 1608 1609 if (networkAgent.networkCapabilities.hasTransport( 1610 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1611 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1612 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1613 10); 1614 type = ConnectivityManager.TYPE_MOBILE; 1615 } else if (networkAgent.networkCapabilities.hasTransport( 1616 NetworkCapabilities.TRANSPORT_WIFI)) { 1617 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1618 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1619 15); 1620 type = ConnectivityManager.TYPE_WIFI; 1621 } else { 1622 // do not track any other networks 1623 timeout = 0; 1624 } 1625 1626 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1627 try { 1628 mNetd.addIdleTimer(iface, timeout, type); 1629 } catch (Exception e) { 1630 // You shall not crash! 1631 loge("Exception in setupDataActivityTracking " + e); 1632 } 1633 } 1634 } 1635 1636 /** 1637 * Remove data activity tracking when network disconnects. 1638 */ 1639 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1640 final String iface = networkAgent.linkProperties.getInterfaceName(); 1641 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1642 1643 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1644 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1645 try { 1646 // the call fails silently if no idletimer setup for this interface 1647 mNetd.removeIdleTimer(iface); 1648 } catch (Exception e) { 1649 loge("Exception in removeDataActivityTracking " + e); 1650 } 1651 } 1652 } 1653 1654 /** 1655 * Reads the network specific MTU size from reources. 1656 * and set it on it's iface. 1657 */ 1658 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1659 final String iface = newLp.getInterfaceName(); 1660 final int mtu = newLp.getMtu(); 1661 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1662 if (VDBG) log("identical MTU - not setting"); 1663 return; 1664 } 1665 1666 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1667 if (mtu != 0) loge("Unexpected mtu value: " + mtu + ", " + iface); 1668 return; 1669 } 1670 1671 // Cannot set MTU without interface name 1672 if (TextUtils.isEmpty(iface)) { 1673 loge("Setting MTU size with null iface."); 1674 return; 1675 } 1676 1677 try { 1678 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 1679 mNetd.setMtu(iface, mtu); 1680 } catch (Exception e) { 1681 Slog.e(TAG, "exception in setMtu()" + e); 1682 } 1683 } 1684 1685 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1686 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1687 1688 // Overridden for testing purposes to avoid writing to SystemProperties. 1689 @VisibleForTesting 1690 protected int getDefaultTcpRwnd() { 1691 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1692 } 1693 1694 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1695 if (isDefaultNetwork(nai) == false) { 1696 return; 1697 } 1698 1699 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1700 String[] values = null; 1701 if (tcpBufferSizes != null) { 1702 values = tcpBufferSizes.split(","); 1703 } 1704 1705 if (values == null || values.length != 6) { 1706 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1707 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1708 values = tcpBufferSizes.split(","); 1709 } 1710 1711 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1712 1713 try { 1714 if (VDBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1715 1716 final String prefix = "/sys/kernel/ipv4/tcp_"; 1717 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1718 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1719 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1720 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1721 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1722 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1723 mCurrentTcpBufferSizes = tcpBufferSizes; 1724 } catch (IOException e) { 1725 loge("Can't set TCP buffer sizes:" + e); 1726 } 1727 1728 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1729 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1730 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1731 if (rwndValue != 0) { 1732 SystemProperties.set(sysctlKey, rwndValue.toString()); 1733 } 1734 } 1735 1736 private void flushVmDnsCache() { 1737 /* 1738 * Tell the VMs to toss their DNS caches 1739 */ 1740 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1741 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1742 /* 1743 * Connectivity events can happen before boot has completed ... 1744 */ 1745 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1746 final long ident = Binder.clearCallingIdentity(); 1747 try { 1748 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1749 } finally { 1750 Binder.restoreCallingIdentity(ident); 1751 } 1752 } 1753 1754 @Override 1755 public int getRestoreDefaultNetworkDelay(int networkType) { 1756 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1757 NETWORK_RESTORE_DELAY_PROP_NAME); 1758 if(restoreDefaultNetworkDelayStr != null && 1759 restoreDefaultNetworkDelayStr.length() != 0) { 1760 try { 1761 return Integer.parseInt(restoreDefaultNetworkDelayStr); 1762 } catch (NumberFormatException e) { 1763 } 1764 } 1765 // if the system property isn't set, use the value for the apn type 1766 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1767 1768 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1769 (mNetConfigs[networkType] != null)) { 1770 ret = mNetConfigs[networkType].restoreTime; 1771 } 1772 return ret; 1773 } 1774 1775 private boolean argsContain(String[] args, String target) { 1776 for (String arg : args) { 1777 if (arg.equals(target)) return true; 1778 } 1779 return false; 1780 } 1781 1782 private void dumpNetworkDiagnostics(IndentingPrintWriter pw) { 1783 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1784 final long DIAG_TIME_MS = 5000; 1785 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1786 // Start gathering diagnostic information. 1787 netDiags.add(new NetworkDiagnostics( 1788 nai.network, 1789 new LinkProperties(nai.linkProperties), // Must be a copy. 1790 DIAG_TIME_MS)); 1791 } 1792 1793 for (NetworkDiagnostics netDiag : netDiags) { 1794 pw.println(); 1795 netDiag.waitForMeasurements(); 1796 netDiag.dump(pw); 1797 } 1798 } 1799 1800 @Override 1801 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1802 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1803 if (mContext.checkCallingOrSelfPermission( 1804 android.Manifest.permission.DUMP) 1805 != PackageManager.PERMISSION_GRANTED) { 1806 pw.println("Permission Denial: can't dump ConnectivityService " + 1807 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1808 Binder.getCallingUid()); 1809 return; 1810 } 1811 1812 if (argsContain(args, "--diag")) { 1813 dumpNetworkDiagnostics(pw); 1814 return; 1815 } 1816 1817 pw.print("NetworkFactories for:"); 1818 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1819 pw.print(" " + nfi.name); 1820 } 1821 pw.println(); 1822 pw.println(); 1823 1824 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 1825 pw.print("Active default network: "); 1826 if (defaultNai == null) { 1827 pw.println("none"); 1828 } else { 1829 pw.println(defaultNai.network.netId); 1830 } 1831 pw.println(); 1832 1833 pw.println("Current Networks:"); 1834 pw.increaseIndent(); 1835 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1836 pw.println(nai.toString()); 1837 pw.increaseIndent(); 1838 pw.println("Requests:"); 1839 pw.increaseIndent(); 1840 for (int i = 0; i < nai.networkRequests.size(); i++) { 1841 pw.println(nai.networkRequests.valueAt(i).toString()); 1842 } 1843 pw.decreaseIndent(); 1844 pw.println("Lingered:"); 1845 pw.increaseIndent(); 1846 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1847 pw.decreaseIndent(); 1848 pw.decreaseIndent(); 1849 } 1850 pw.decreaseIndent(); 1851 pw.println(); 1852 1853 pw.println("Metered Interfaces:"); 1854 pw.increaseIndent(); 1855 for (String value : mMeteredIfaces) { 1856 pw.println(value); 1857 } 1858 pw.decreaseIndent(); 1859 pw.println(); 1860 1861 pw.print("Restrict background: "); 1862 pw.println(mRestrictBackground); 1863 pw.println(); 1864 1865 pw.println("Status for known UIDs:"); 1866 pw.increaseIndent(); 1867 final int size = mUidRules.size(); 1868 for (int i = 0; i < size; i++) { 1869 final int uid = mUidRules.keyAt(i); 1870 pw.print("UID="); 1871 pw.print(uid); 1872 final int uidRules = mUidRules.get(uid, RULE_NONE); 1873 pw.print(" rules="); 1874 pw.print(uidRulesToString(uidRules)); 1875 pw.println(); 1876 } 1877 pw.println(); 1878 pw.decreaseIndent(); 1879 1880 pw.println("Network Requests:"); 1881 pw.increaseIndent(); 1882 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1883 pw.println(nri.toString()); 1884 } 1885 pw.println(); 1886 pw.decreaseIndent(); 1887 1888 mLegacyTypeTracker.dump(pw); 1889 1890 synchronized (this) { 1891 pw.print("mNetTransitionWakeLock: currently " + 1892 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1893 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1894 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1895 } else { 1896 pw.println(", last requested never"); 1897 } 1898 } 1899 1900 pw.println(); 1901 mTethering.dump(fd, pw, args); 1902 1903 pw.println(); 1904 mKeepaliveTracker.dump(pw); 1905 1906 pw.println(); 1907 1908 if (mInetLog != null && mInetLog.size() > 0) { 1909 pw.println(); 1910 pw.println("Inet condition reports:"); 1911 pw.increaseIndent(); 1912 for(int i = 0; i < mInetLog.size(); i++) { 1913 pw.println(mInetLog.get(i)); 1914 } 1915 pw.decreaseIndent(); 1916 } 1917 1918 if (argsContain(args, "--short") == false) { 1919 pw.println(); 1920 synchronized (mValidationLogs) { 1921 pw.println("mValidationLogs (most recent first):"); 1922 for (Pair<Network,ReadOnlyLocalLog> p : mValidationLogs) { 1923 pw.println(p.first); 1924 pw.increaseIndent(); 1925 p.second.dump(fd, pw, args); 1926 pw.decreaseIndent(); 1927 } 1928 } 1929 1930 pw.println(); 1931 pw.println("mNetworkRequestInfoLogs (most recent first):"); 1932 pw.increaseIndent(); 1933 mNetworkRequestInfoLogs.reverseDump(fd, pw, args); 1934 pw.decreaseIndent(); 1935 } 1936 } 1937 1938 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, int what) { 1939 if (nai.network == null) return false; 1940 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1941 if (officialNai != null && officialNai.equals(nai)) return true; 1942 if (officialNai != null || VDBG) { 1943 final String msg = sMagicDecoderRing.get(what, Integer.toString(what)); 1944 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1945 " - " + nai); 1946 } 1947 return false; 1948 } 1949 1950 private boolean isRequest(NetworkRequest request) { 1951 return mNetworkRequests.get(request).isRequest(); 1952 } 1953 1954 // must be stateless - things change under us. 1955 private class NetworkStateTrackerHandler extends Handler { 1956 public NetworkStateTrackerHandler(Looper looper) { 1957 super(looper); 1958 } 1959 1960 private boolean maybeHandleAsyncChannelMessage(Message msg) { 1961 switch (msg.what) { 1962 default: 1963 return false; 1964 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1965 handleAsyncChannelHalfConnect(msg); 1966 break; 1967 } 1968 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1969 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1970 if (nai != null) nai.asyncChannel.disconnect(); 1971 break; 1972 } 1973 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1974 handleAsyncChannelDisconnected(msg); 1975 break; 1976 } 1977 } 1978 return true; 1979 } 1980 1981 private void maybeHandleNetworkAgentMessage(Message msg) { 1982 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1983 if (nai == null) { 1984 if (VDBG) { 1985 final String what = sMagicDecoderRing.get(msg.what, Integer.toString(msg.what)); 1986 log(String.format("%s from unknown NetworkAgent", what)); 1987 } 1988 return; 1989 } 1990 1991 switch (msg.what) { 1992 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1993 final NetworkCapabilities networkCapabilities = (NetworkCapabilities) msg.obj; 1994 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL) || 1995 networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 1996 Slog.wtf(TAG, "BUG: " + nai + " has CS-managed capability."); 1997 } 1998 if (nai.everConnected && !nai.networkCapabilities.equalImmutableCapabilities( 1999 networkCapabilities)) { 2000 Slog.wtf(TAG, "BUG: " + nai + " changed immutable capabilities: " 2001 + nai.networkCapabilities + " -> " + networkCapabilities); 2002 } 2003 updateCapabilities(nai, networkCapabilities); 2004 break; 2005 } 2006 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 2007 if (VDBG) { 2008 log("Update of LinkProperties for " + nai.name() + 2009 "; created=" + nai.created + 2010 "; everConnected=" + nai.everConnected); 2011 } 2012 LinkProperties oldLp = nai.linkProperties; 2013 synchronized (nai) { 2014 nai.linkProperties = (LinkProperties)msg.obj; 2015 } 2016 if (nai.everConnected) updateLinkProperties(nai, oldLp); 2017 break; 2018 } 2019 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 2020 NetworkInfo info = (NetworkInfo) msg.obj; 2021 updateNetworkInfo(nai, info); 2022 break; 2023 } 2024 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 2025 Integer score = (Integer) msg.obj; 2026 if (score != null) updateNetworkScore(nai, score.intValue()); 2027 break; 2028 } 2029 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 2030 try { 2031 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2032 } catch (Exception e) { 2033 // Never crash! 2034 loge("Exception in addVpnUidRanges: " + e); 2035 } 2036 break; 2037 } 2038 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 2039 try { 2040 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2041 } catch (Exception e) { 2042 // Never crash! 2043 loge("Exception in removeVpnUidRanges: " + e); 2044 } 2045 break; 2046 } 2047 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 2048 if (nai.everConnected && !nai.networkMisc.explicitlySelected) { 2049 loge("ERROR: already-connected network explicitly selected."); 2050 } 2051 nai.networkMisc.explicitlySelected = true; 2052 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 2053 break; 2054 } 2055 case NetworkAgent.EVENT_PACKET_KEEPALIVE: { 2056 mKeepaliveTracker.handleEventPacketKeepalive(nai, msg); 2057 break; 2058 } 2059 } 2060 } 2061 2062 private boolean maybeHandleNetworkMonitorMessage(Message msg) { 2063 switch (msg.what) { 2064 default: 2065 return false; 2066 case NetworkMonitor.EVENT_NETWORK_TESTED: { 2067 final NetworkAgentInfo nai; 2068 synchronized (mNetworkForNetId) { 2069 nai = mNetworkForNetId.get(msg.arg2); 2070 } 2071 if (nai != null) { 2072 final boolean valid = 2073 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2074 if (DBG) log(nai.name() + " validation " + (valid ? "passed" : "failed") + 2075 (msg.obj == null ? "" : " with redirect to " + (String)msg.obj)); 2076 if (valid != nai.lastValidated) { 2077 final int oldScore = nai.getCurrentScore(); 2078 nai.lastValidated = valid; 2079 nai.everValidated |= valid; 2080 updateCapabilities(nai, nai.networkCapabilities); 2081 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2082 if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); 2083 } 2084 updateInetCondition(nai); 2085 // Let the NetworkAgent know the state of its network 2086 Bundle redirectUrlBundle = new Bundle(); 2087 redirectUrlBundle.putString(NetworkAgent.REDIRECT_URL_KEY, (String)msg.obj); 2088 nai.asyncChannel.sendMessage( 2089 NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2090 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2091 0, redirectUrlBundle); 2092 } 2093 break; 2094 } 2095 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2096 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2097 if (isLiveNetworkAgent(nai, msg.what)) { 2098 handleLingerComplete(nai); 2099 } 2100 break; 2101 } 2102 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2103 final int netId = msg.arg2; 2104 final boolean visible = (msg.arg1 != 0); 2105 final NetworkAgentInfo nai; 2106 synchronized (mNetworkForNetId) { 2107 nai = mNetworkForNetId.get(netId); 2108 } 2109 // If captive portal status has changed, update capabilities. 2110 if (nai != null && (visible != nai.lastCaptivePortalDetected)) { 2111 nai.lastCaptivePortalDetected = visible; 2112 nai.everCaptivePortalDetected |= visible; 2113 updateCapabilities(nai, nai.networkCapabilities); 2114 } 2115 if (!visible) { 2116 setProvNotificationVisibleIntent(false, netId, null, 0, null, null, false); 2117 } else { 2118 if (nai == null) { 2119 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2120 break; 2121 } 2122 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2123 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), 2124 (PendingIntent)msg.obj, nai.networkMisc.explicitlySelected); 2125 } 2126 break; 2127 } 2128 } 2129 return true; 2130 } 2131 2132 @Override 2133 public void handleMessage(Message msg) { 2134 if (!maybeHandleAsyncChannelMessage(msg) && !maybeHandleNetworkMonitorMessage(msg)) { 2135 maybeHandleNetworkAgentMessage(msg); 2136 } 2137 } 2138 } 2139 2140 private void linger(NetworkAgentInfo nai) { 2141 nai.lingering = true; 2142 NetworkEvent.logEvent(nai.network.netId, NetworkEvent.NETWORK_LINGER); 2143 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 2144 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 2145 } 2146 2147 // Cancel any lingering so the linger timeout doesn't teardown a network. 2148 // This should be called when a network begins satisfying a NetworkRequest. 2149 // Note: depending on what state the NetworkMonitor is in (e.g., 2150 // if it's awaiting captive portal login, or if validation failed), this 2151 // may trigger a re-evaluation of the network. 2152 private void unlinger(NetworkAgentInfo nai) { 2153 nai.networkLingered.clear(); 2154 if (!nai.lingering) return; 2155 nai.lingering = false; 2156 NetworkEvent.logEvent(nai.network.netId, NetworkEvent.NETWORK_UNLINGER); 2157 if (VDBG) log("Canceling linger of " + nai.name()); 2158 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2159 } 2160 2161 private void handleAsyncChannelHalfConnect(Message msg) { 2162 AsyncChannel ac = (AsyncChannel) msg.obj; 2163 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2164 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2165 if (VDBG) log("NetworkFactory connected"); 2166 // A network factory has connected. Send it all current NetworkRequests. 2167 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2168 if (!nri.isRequest()) continue; 2169 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2170 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2171 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2172 } 2173 } else { 2174 loge("Error connecting NetworkFactory"); 2175 mNetworkFactoryInfos.remove(msg.obj); 2176 } 2177 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2178 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2179 if (VDBG) log("NetworkAgent connected"); 2180 // A network agent has requested a connection. Establish the connection. 2181 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2182 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2183 } else { 2184 loge("Error connecting NetworkAgent"); 2185 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2186 if (nai != null) { 2187 final boolean wasDefault = isDefaultNetwork(nai); 2188 synchronized (mNetworkForNetId) { 2189 mNetworkForNetId.remove(nai.network.netId); 2190 mNetIdInUse.delete(nai.network.netId); 2191 } 2192 // Just in case. 2193 mLegacyTypeTracker.remove(nai, wasDefault); 2194 } 2195 } 2196 } 2197 } 2198 2199 private void handleAsyncChannelDisconnected(Message msg) { 2200 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2201 if (nai != null) { 2202 if (DBG) { 2203 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2204 } 2205 // A network agent has disconnected. 2206 // TODO - if we move the logic to the network agent (have them disconnect 2207 // because they lost all their requests or because their score isn't good) 2208 // then they would disconnect organically, report their new state and then 2209 // disconnect the channel. 2210 if (nai.networkInfo.isConnected()) { 2211 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2212 null, null); 2213 } 2214 final boolean wasDefault = isDefaultNetwork(nai); 2215 if (wasDefault) { 2216 mDefaultInetConditionPublished = 0; 2217 } 2218 notifyIfacesChangedForNetworkStats(); 2219 // TODO - we shouldn't send CALLBACK_LOST to requests that can be satisfied 2220 // by other networks that are already connected. Perhaps that can be done by 2221 // sending all CALLBACK_LOST messages (for requests, not listens) at the end 2222 // of rematchAllNetworksAndRequests 2223 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2224 mKeepaliveTracker.handleStopAllKeepalives(nai, 2225 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 2226 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2227 mNetworkAgentInfos.remove(msg.replyTo); 2228 updateClat(null, nai.linkProperties, nai); 2229 synchronized (mNetworkForNetId) { 2230 // Remove the NetworkAgent, but don't mark the netId as 2231 // available until we've told netd to delete it below. 2232 mNetworkForNetId.remove(nai.network.netId); 2233 } 2234 // Remove all previously satisfied requests. 2235 for (int i = 0; i < nai.networkRequests.size(); i++) { 2236 NetworkRequest request = nai.networkRequests.valueAt(i); 2237 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2238 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2239 mNetworkForRequestId.remove(request.requestId); 2240 sendUpdatedScoreToFactories(request, 0); 2241 } 2242 } 2243 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2244 removeDataActivityTracking(nai); 2245 notifyLockdownVpn(nai); 2246 requestNetworkTransitionWakelock(nai.name()); 2247 } 2248 mLegacyTypeTracker.remove(nai, wasDefault); 2249 rematchAllNetworksAndRequests(null, 0); 2250 if (wasDefault && getDefaultNetwork() == null) { 2251 // Log that we lost the default network and there is no replacement. 2252 logDefaultNetworkEvent(null, nai); 2253 } 2254 if (nai.created) { 2255 // Tell netd to clean up the configuration for this network 2256 // (routing rules, DNS, etc). 2257 // This may be slow as it requires a lot of netd shelling out to ip and 2258 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2259 // after we've rematched networks with requests which should make a potential 2260 // fallback network the default or requested a new network from the 2261 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2262 // long time. 2263 try { 2264 mNetd.removeNetwork(nai.network.netId); 2265 } catch (Exception e) { 2266 loge("Exception removing network: " + e); 2267 } 2268 } 2269 synchronized (mNetworkForNetId) { 2270 mNetIdInUse.delete(nai.network.netId); 2271 } 2272 } else { 2273 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2274 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2275 } 2276 } 2277 2278 // If this method proves to be too slow then we can maintain a separate 2279 // pendingIntent => NetworkRequestInfo map. 2280 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2281 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2282 Intent intent = pendingIntent.getIntent(); 2283 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2284 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2285 if (existingPendingIntent != null && 2286 existingPendingIntent.getIntent().filterEquals(intent)) { 2287 return entry.getValue(); 2288 } 2289 } 2290 return null; 2291 } 2292 2293 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2294 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2295 2296 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2297 if (existingRequest != null) { // remove the existing request. 2298 if (DBG) log("Replacing " + existingRequest.request + " with " 2299 + nri.request + " because their intents matched."); 2300 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2301 } 2302 handleRegisterNetworkRequest(nri); 2303 } 2304 2305 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2306 mNetworkRequests.put(nri.request, nri); 2307 mNetworkRequestInfoLogs.log("REGISTER " + nri); 2308 if (!nri.isRequest()) { 2309 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2310 if (nri.request.networkCapabilities.hasSignalStrength() && 2311 network.satisfiesImmutableCapabilitiesOf(nri.request)) { 2312 updateSignalStrengthThresholds(network, "REGISTER", nri.request); 2313 } 2314 } 2315 } 2316 rematchAllNetworksAndRequests(null, 0); 2317 if (nri.isRequest() && mNetworkForRequestId.get(nri.request.requestId) == null) { 2318 sendUpdatedScoreToFactories(nri.request, 0); 2319 } 2320 } 2321 2322 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2323 int callingUid) { 2324 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2325 if (nri != null) { 2326 handleReleaseNetworkRequest(nri.request, callingUid); 2327 } 2328 } 2329 2330 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2331 // This is whether it is satisfying any NetworkRequests or were it to become validated, 2332 // would it have a chance of satisfying any NetworkRequests. 2333 private boolean unneeded(NetworkAgentInfo nai) { 2334 if (!nai.everConnected || nai.isVPN() || nai.lingering) return false; 2335 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2336 // If this Network is already the highest scoring Network for a request, or if 2337 // there is hope for it to become one if it validated, then it is needed. 2338 if (nri.isRequest() && nai.satisfies(nri.request) && 2339 (nai.networkRequests.get(nri.request.requestId) != null || 2340 // Note that this catches two important cases: 2341 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2342 // is currently satisfying the request. This is desirable when 2343 // cellular ends up validating but WiFi does not. 2344 // 2. Unvalidated WiFi will not be reaped when validated cellular 2345 // is currently satisfying the request. This is desirable when 2346 // WiFi ends up validating and out scoring cellular. 2347 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2348 nai.getCurrentScoreAsValidated())) { 2349 return false; 2350 } 2351 } 2352 return true; 2353 } 2354 2355 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2356 NetworkRequestInfo nri = mNetworkRequests.get(request); 2357 if (nri != null) { 2358 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2359 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2360 return; 2361 } 2362 if (VDBG || (DBG && nri.isRequest())) log("releasing NetworkRequest " + request); 2363 nri.unlinkDeathRecipient(); 2364 mNetworkRequests.remove(request); 2365 synchronized (mUidToNetworkRequestCount) { 2366 int requests = mUidToNetworkRequestCount.get(nri.mUid, 0); 2367 if (requests < 1) { 2368 Slog.wtf(TAG, "BUG: too small request count " + requests + " for UID " + 2369 nri.mUid); 2370 } else if (requests == 1) { 2371 mUidToNetworkRequestCount.removeAt( 2372 mUidToNetworkRequestCount.indexOfKey(nri.mUid)); 2373 } else { 2374 mUidToNetworkRequestCount.put(nri.mUid, requests - 1); 2375 } 2376 } 2377 mNetworkRequestInfoLogs.log("RELEASE " + nri); 2378 if (nri.isRequest()) { 2379 // Find all networks that are satisfying this request and remove the request 2380 // from their request lists. 2381 // TODO - it's my understanding that for a request there is only a single 2382 // network satisfying it, so this loop is wasteful 2383 boolean wasKept = false; 2384 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2385 if (nai.networkRequests.get(nri.request.requestId) != null) { 2386 nai.networkRequests.remove(nri.request.requestId); 2387 if (VDBG) { 2388 log(" Removing from current network " + nai.name() + 2389 ", leaving " + nai.networkRequests.size() + 2390 " requests."); 2391 } 2392 if (unneeded(nai)) { 2393 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2394 teardownUnneededNetwork(nai); 2395 } else { 2396 // suspect there should only be one pass through here 2397 // but if any were kept do the check below 2398 wasKept |= true; 2399 } 2400 } 2401 } 2402 2403 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2404 if (nai != null) { 2405 mNetworkForRequestId.remove(nri.request.requestId); 2406 } 2407 // Maintain the illusion. When this request arrived, we might have pretended 2408 // that a network connected to serve it, even though the network was already 2409 // connected. Now that this request has gone away, we might have to pretend 2410 // that the network disconnected. LegacyTypeTracker will generate that 2411 // phantom disconnect for this type. 2412 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2413 boolean doRemove = true; 2414 if (wasKept) { 2415 // check if any of the remaining requests for this network are for the 2416 // same legacy type - if so, don't remove the nai 2417 for (int i = 0; i < nai.networkRequests.size(); i++) { 2418 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2419 if (otherRequest.legacyType == nri.request.legacyType && 2420 isRequest(otherRequest)) { 2421 if (DBG) log(" still have other legacy request - leaving"); 2422 doRemove = false; 2423 } 2424 } 2425 } 2426 2427 if (doRemove) { 2428 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2429 } 2430 } 2431 2432 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2433 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2434 nri.request); 2435 } 2436 } else { 2437 // listens don't have a singular affectedNetwork. Check all networks to see 2438 // if this listen request applies and remove it. 2439 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2440 nai.networkRequests.remove(nri.request.requestId); 2441 if (nri.request.networkCapabilities.hasSignalStrength() && 2442 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 2443 updateSignalStrengthThresholds(nai, "RELEASE", nri.request); 2444 } 2445 } 2446 } 2447 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2448 } 2449 } 2450 2451 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2452 enforceConnectivityInternalPermission(); 2453 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2454 accept ? 1 : 0, always ? 1: 0, network)); 2455 } 2456 2457 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2458 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2459 " accept=" + accept + " always=" + always); 2460 2461 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2462 if (nai == null) { 2463 // Nothing to do. 2464 return; 2465 } 2466 2467 if (nai.everValidated) { 2468 // The network validated while the dialog box was up. Take no action. 2469 return; 2470 } 2471 2472 if (!nai.networkMisc.explicitlySelected) { 2473 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2474 } 2475 2476 if (accept != nai.networkMisc.acceptUnvalidated) { 2477 int oldScore = nai.getCurrentScore(); 2478 nai.networkMisc.acceptUnvalidated = accept; 2479 rematchAllNetworksAndRequests(nai, oldScore); 2480 sendUpdatedScoreToFactories(nai); 2481 } 2482 2483 if (always) { 2484 nai.asyncChannel.sendMessage( 2485 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2486 } 2487 2488 if (!accept) { 2489 // Tell the NetworkAgent to not automatically reconnect to the network. 2490 nai.asyncChannel.sendMessage(NetworkAgent.CMD_PREVENT_AUTOMATIC_RECONNECT); 2491 // Teardown the nework. 2492 teardownUnneededNetwork(nai); 2493 } 2494 2495 } 2496 2497 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2498 if (VDBG) log("scheduleUnvalidatedPrompt " + nai.network); 2499 mHandler.sendMessageDelayed( 2500 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2501 PROMPT_UNVALIDATED_DELAY_MS); 2502 } 2503 2504 private void handlePromptUnvalidated(Network network) { 2505 if (VDBG) log("handlePromptUnvalidated " + network); 2506 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2507 2508 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2509 // we haven't already been told to switch to it regardless of whether it validated or not. 2510 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2511 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2512 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2513 return; 2514 } 2515 2516 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2517 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2518 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2519 intent.setClassName("com.android.settings", 2520 "com.android.settings.wifi.WifiNoInternetDialog"); 2521 2522 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2523 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2524 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2525 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent, true); 2526 } 2527 2528 private class InternalHandler extends Handler { 2529 public InternalHandler(Looper looper) { 2530 super(looper); 2531 } 2532 2533 @Override 2534 public void handleMessage(Message msg) { 2535 switch (msg.what) { 2536 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2537 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2538 String causedBy = null; 2539 synchronized (ConnectivityService.this) { 2540 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2541 mNetTransitionWakeLock.isHeld()) { 2542 mNetTransitionWakeLock.release(); 2543 causedBy = mNetTransitionWakeLockCausedBy; 2544 } else { 2545 break; 2546 } 2547 } 2548 if (VDBG) { 2549 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2550 log("Failed to find a new network - expiring NetTransition Wakelock"); 2551 } else { 2552 log("NetTransition Wakelock (" + 2553 (causedBy == null ? "unknown" : causedBy) + 2554 " cleared because we found a replacement network"); 2555 } 2556 } 2557 break; 2558 } 2559 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2560 handleDeprecatedGlobalHttpProxy(); 2561 break; 2562 } 2563 case EVENT_PROXY_HAS_CHANGED: { 2564 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2565 break; 2566 } 2567 case EVENT_REGISTER_NETWORK_FACTORY: { 2568 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2569 break; 2570 } 2571 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2572 handleUnregisterNetworkFactory((Messenger)msg.obj); 2573 break; 2574 } 2575 case EVENT_REGISTER_NETWORK_AGENT: { 2576 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2577 break; 2578 } 2579 case EVENT_REGISTER_NETWORK_REQUEST: 2580 case EVENT_REGISTER_NETWORK_LISTENER: { 2581 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2582 break; 2583 } 2584 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2585 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2586 handleRegisterNetworkRequestWithIntent(msg); 2587 break; 2588 } 2589 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2590 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2591 break; 2592 } 2593 case EVENT_RELEASE_NETWORK_REQUEST: { 2594 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2595 break; 2596 } 2597 case EVENT_SET_ACCEPT_UNVALIDATED: { 2598 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2599 break; 2600 } 2601 case EVENT_PROMPT_UNVALIDATED: { 2602 handlePromptUnvalidated((Network) msg.obj); 2603 break; 2604 } 2605 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2606 handleMobileDataAlwaysOn(); 2607 break; 2608 } 2609 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2610 case NetworkAgent.CMD_START_PACKET_KEEPALIVE: { 2611 mKeepaliveTracker.handleStartKeepalive(msg); 2612 break; 2613 } 2614 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2615 case NetworkAgent.CMD_STOP_PACKET_KEEPALIVE: { 2616 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork((Network) msg.obj); 2617 int slot = msg.arg1; 2618 int reason = msg.arg2; 2619 mKeepaliveTracker.handleStopKeepalive(nai, slot, reason); 2620 break; 2621 } 2622 case EVENT_SYSTEM_READY: { 2623 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2624 nai.networkMonitor.systemReady = true; 2625 } 2626 break; 2627 } 2628 } 2629 } 2630 } 2631 2632 // javadoc from interface 2633 public int tether(String iface) { 2634 ConnectivityManager.enforceTetherChangePermission(mContext); 2635 if (isTetheringSupported()) { 2636 final int status = mTethering.tether(iface); 2637 if (status == ConnectivityManager.TETHER_ERROR_NO_ERROR) { 2638 try { 2639 mPolicyManager.onTetheringChanged(iface, true); 2640 } catch (RemoteException e) { 2641 } 2642 } 2643 return status; 2644 } else { 2645 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2646 } 2647 } 2648 2649 // javadoc from interface 2650 public int untether(String iface) { 2651 ConnectivityManager.enforceTetherChangePermission(mContext); 2652 2653 if (isTetheringSupported()) { 2654 final int status = mTethering.untether(iface); 2655 if (status == ConnectivityManager.TETHER_ERROR_NO_ERROR) { 2656 try { 2657 mPolicyManager.onTetheringChanged(iface, false); 2658 } catch (RemoteException e) { 2659 } 2660 } 2661 return status; 2662 } else { 2663 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2664 } 2665 } 2666 2667 // javadoc from interface 2668 public int getLastTetherError(String iface) { 2669 enforceTetherAccessPermission(); 2670 2671 if (isTetheringSupported()) { 2672 return mTethering.getLastTetherError(iface); 2673 } else { 2674 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2675 } 2676 } 2677 2678 // TODO - proper iface API for selection by property, inspection, etc 2679 public String[] getTetherableUsbRegexs() { 2680 enforceTetherAccessPermission(); 2681 if (isTetheringSupported()) { 2682 return mTethering.getTetherableUsbRegexs(); 2683 } else { 2684 return new String[0]; 2685 } 2686 } 2687 2688 public String[] getTetherableWifiRegexs() { 2689 enforceTetherAccessPermission(); 2690 if (isTetheringSupported()) { 2691 return mTethering.getTetherableWifiRegexs(); 2692 } else { 2693 return new String[0]; 2694 } 2695 } 2696 2697 public String[] getTetherableBluetoothRegexs() { 2698 enforceTetherAccessPermission(); 2699 if (isTetheringSupported()) { 2700 return mTethering.getTetherableBluetoothRegexs(); 2701 } else { 2702 return new String[0]; 2703 } 2704 } 2705 2706 public int setUsbTethering(boolean enable) { 2707 ConnectivityManager.enforceTetherChangePermission(mContext); 2708 if (isTetheringSupported()) { 2709 return mTethering.setUsbTethering(enable); 2710 } else { 2711 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2712 } 2713 } 2714 2715 // TODO - move iface listing, queries, etc to new module 2716 // javadoc from interface 2717 public String[] getTetherableIfaces() { 2718 enforceTetherAccessPermission(); 2719 return mTethering.getTetherableIfaces(); 2720 } 2721 2722 public String[] getTetheredIfaces() { 2723 enforceTetherAccessPermission(); 2724 return mTethering.getTetheredIfaces(); 2725 } 2726 2727 public String[] getTetheringErroredIfaces() { 2728 enforceTetherAccessPermission(); 2729 return mTethering.getErroredIfaces(); 2730 } 2731 2732 public String[] getTetheredDhcpRanges() { 2733 enforceConnectivityInternalPermission(); 2734 return mTethering.getTetheredDhcpRanges(); 2735 } 2736 2737 // if ro.tether.denied = true we default to no tethering 2738 // gservices could set the secure setting to 1 though to enable it on a build where it 2739 // had previously been turned off. 2740 @Override 2741 public boolean isTetheringSupported() { 2742 enforceTetherAccessPermission(); 2743 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2744 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2745 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2746 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2747 return tetherEnabledInSettings && mUserManager.isAdminUser() && 2748 ((mTethering.getTetherableUsbRegexs().length != 0 || 2749 mTethering.getTetherableWifiRegexs().length != 0 || 2750 mTethering.getTetherableBluetoothRegexs().length != 0) && 2751 mTethering.getUpstreamIfaceTypes().length != 0); 2752 } 2753 2754 @Override 2755 public void startTethering(int type, ResultReceiver receiver, 2756 boolean showProvisioningUi) { 2757 ConnectivityManager.enforceTetherChangePermission(mContext); 2758 if (!isTetheringSupported()) { 2759 receiver.send(ConnectivityManager.TETHER_ERROR_UNSUPPORTED, null); 2760 return; 2761 } 2762 mTethering.startTethering(type, receiver, showProvisioningUi); 2763 } 2764 2765 @Override 2766 public void stopTethering(int type) { 2767 ConnectivityManager.enforceTetherChangePermission(mContext); 2768 mTethering.stopTethering(type); 2769 } 2770 2771 // Called when we lose the default network and have no replacement yet. 2772 // This will automatically be cleared after X seconds or a new default network 2773 // becomes CONNECTED, whichever happens first. The timer is started by the 2774 // first caller and not restarted by subsequent callers. 2775 private void requestNetworkTransitionWakelock(String forWhom) { 2776 int serialNum = 0; 2777 synchronized (this) { 2778 if (mNetTransitionWakeLock.isHeld()) return; 2779 serialNum = ++mNetTransitionWakeLockSerialNumber; 2780 mNetTransitionWakeLock.acquire(); 2781 mNetTransitionWakeLockCausedBy = forWhom; 2782 } 2783 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2784 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2785 mNetTransitionWakeLockTimeout); 2786 return; 2787 } 2788 2789 // 100 percent is full good, 0 is full bad. 2790 public void reportInetCondition(int networkType, int percentage) { 2791 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2792 if (nai == null) return; 2793 reportNetworkConnectivity(nai.network, percentage > 50); 2794 } 2795 2796 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2797 enforceAccessPermission(); 2798 enforceInternetPermission(); 2799 2800 NetworkAgentInfo nai; 2801 if (network == null) { 2802 nai = getDefaultNetwork(); 2803 } else { 2804 nai = getNetworkAgentInfoForNetwork(network); 2805 } 2806 if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || 2807 nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { 2808 return; 2809 } 2810 // Revalidate if the app report does not match our current validated state. 2811 if (hasConnectivity == nai.lastValidated) return; 2812 final int uid = Binder.getCallingUid(); 2813 if (DBG) { 2814 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2815 ") by " + uid); 2816 } 2817 synchronized (nai) { 2818 // Validating a network that has not yet connected could result in a call to 2819 // rematchNetworkAndRequests() which is not meant to work on such networks. 2820 if (!nai.everConnected) return; 2821 2822 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid, false)) return; 2823 2824 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2825 } 2826 } 2827 2828 private ProxyInfo getDefaultProxy() { 2829 // this information is already available as a world read/writable jvm property 2830 // so this API change wouldn't have a benifit. It also breaks the passing 2831 // of proxy info to all the JVMs. 2832 // enforceAccessPermission(); 2833 synchronized (mProxyLock) { 2834 ProxyInfo ret = mGlobalProxy; 2835 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2836 return ret; 2837 } 2838 } 2839 2840 public ProxyInfo getProxyForNetwork(Network network) { 2841 if (network == null) return getDefaultProxy(); 2842 final ProxyInfo globalProxy = getGlobalProxy(); 2843 if (globalProxy != null) return globalProxy; 2844 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2845 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2846 // caller may not have. 2847 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2848 if (nai == null) return null; 2849 synchronized (nai) { 2850 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2851 if (proxyInfo == null) return null; 2852 return new ProxyInfo(proxyInfo); 2853 } 2854 } 2855 2856 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2857 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2858 // proxy is null then there is no proxy in place). 2859 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2860 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2861 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2862 proxy = null; 2863 } 2864 return proxy; 2865 } 2866 2867 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2868 // better for determining if a new proxy broadcast is necessary: 2869 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2870 // avoid unnecessary broadcasts. 2871 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2872 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2873 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2874 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2875 // all set. 2876 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2877 a = canonicalizeProxyInfo(a); 2878 b = canonicalizeProxyInfo(b); 2879 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2880 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2881 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2882 } 2883 2884 public void setGlobalProxy(ProxyInfo proxyProperties) { 2885 enforceConnectivityInternalPermission(); 2886 2887 synchronized (mProxyLock) { 2888 if (proxyProperties == mGlobalProxy) return; 2889 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2890 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2891 2892 String host = ""; 2893 int port = 0; 2894 String exclList = ""; 2895 String pacFileUrl = ""; 2896 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2897 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2898 if (!proxyProperties.isValid()) { 2899 if (DBG) 2900 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2901 return; 2902 } 2903 mGlobalProxy = new ProxyInfo(proxyProperties); 2904 host = mGlobalProxy.getHost(); 2905 port = mGlobalProxy.getPort(); 2906 exclList = mGlobalProxy.getExclusionListAsString(); 2907 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2908 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2909 } 2910 } else { 2911 mGlobalProxy = null; 2912 } 2913 ContentResolver res = mContext.getContentResolver(); 2914 final long token = Binder.clearCallingIdentity(); 2915 try { 2916 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2917 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2918 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2919 exclList); 2920 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2921 } finally { 2922 Binder.restoreCallingIdentity(token); 2923 } 2924 2925 if (mGlobalProxy == null) { 2926 proxyProperties = mDefaultProxy; 2927 } 2928 sendProxyBroadcast(proxyProperties); 2929 } 2930 } 2931 2932 private void loadGlobalProxy() { 2933 ContentResolver res = mContext.getContentResolver(); 2934 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2935 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2936 String exclList = Settings.Global.getString(res, 2937 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2938 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2939 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2940 ProxyInfo proxyProperties; 2941 if (!TextUtils.isEmpty(pacFileUrl)) { 2942 proxyProperties = new ProxyInfo(pacFileUrl); 2943 } else { 2944 proxyProperties = new ProxyInfo(host, port, exclList); 2945 } 2946 if (!proxyProperties.isValid()) { 2947 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2948 return; 2949 } 2950 2951 synchronized (mProxyLock) { 2952 mGlobalProxy = proxyProperties; 2953 } 2954 } 2955 } 2956 2957 public ProxyInfo getGlobalProxy() { 2958 // this information is already available as a world read/writable jvm property 2959 // so this API change wouldn't have a benifit. It also breaks the passing 2960 // of proxy info to all the JVMs. 2961 // enforceAccessPermission(); 2962 synchronized (mProxyLock) { 2963 return mGlobalProxy; 2964 } 2965 } 2966 2967 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2968 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2969 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2970 proxy = null; 2971 } 2972 synchronized (mProxyLock) { 2973 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2974 if (mDefaultProxy == proxy) return; // catches repeated nulls 2975 if (proxy != null && !proxy.isValid()) { 2976 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2977 return; 2978 } 2979 2980 // This call could be coming from the PacManager, containing the port of the local 2981 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2982 // global (to get the correct local port), and send a broadcast. 2983 // TODO: Switch PacManager to have its own message to send back rather than 2984 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2985 if ((mGlobalProxy != null) && (proxy != null) 2986 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2987 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2988 mGlobalProxy = proxy; 2989 sendProxyBroadcast(mGlobalProxy); 2990 return; 2991 } 2992 mDefaultProxy = proxy; 2993 2994 if (mGlobalProxy != null) return; 2995 if (!mDefaultProxyDisabled) { 2996 sendProxyBroadcast(proxy); 2997 } 2998 } 2999 } 3000 3001 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 3002 // This method gets called when any network changes proxy, but the broadcast only ever contains 3003 // the default proxy (even if it hasn't changed). 3004 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 3005 // world where an app might be bound to a non-default network. 3006 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3007 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 3008 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 3009 3010 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 3011 sendProxyBroadcast(getDefaultProxy()); 3012 } 3013 } 3014 3015 private void handleDeprecatedGlobalHttpProxy() { 3016 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3017 Settings.Global.HTTP_PROXY); 3018 if (!TextUtils.isEmpty(proxy)) { 3019 String data[] = proxy.split(":"); 3020 if (data.length == 0) { 3021 return; 3022 } 3023 3024 String proxyHost = data[0]; 3025 int proxyPort = 8080; 3026 if (data.length > 1) { 3027 try { 3028 proxyPort = Integer.parseInt(data[1]); 3029 } catch (NumberFormatException e) { 3030 return; 3031 } 3032 } 3033 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 3034 setGlobalProxy(p); 3035 } 3036 } 3037 3038 private void sendProxyBroadcast(ProxyInfo proxy) { 3039 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 3040 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3041 if (DBG) log("sending Proxy Broadcast for " + proxy); 3042 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3043 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3044 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3045 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3046 final long ident = Binder.clearCallingIdentity(); 3047 try { 3048 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3049 } finally { 3050 Binder.restoreCallingIdentity(ident); 3051 } 3052 } 3053 3054 private static class SettingsObserver extends ContentObserver { 3055 final private HashMap<Uri, Integer> mUriEventMap; 3056 final private Context mContext; 3057 final private Handler mHandler; 3058 3059 SettingsObserver(Context context, Handler handler) { 3060 super(null); 3061 mUriEventMap = new HashMap<Uri, Integer>(); 3062 mContext = context; 3063 mHandler = handler; 3064 } 3065 3066 void observe(Uri uri, int what) { 3067 mUriEventMap.put(uri, what); 3068 final ContentResolver resolver = mContext.getContentResolver(); 3069 resolver.registerContentObserver(uri, false, this); 3070 } 3071 3072 @Override 3073 public void onChange(boolean selfChange) { 3074 Slog.wtf(TAG, "Should never be reached."); 3075 } 3076 3077 @Override 3078 public void onChange(boolean selfChange, Uri uri) { 3079 final Integer what = mUriEventMap.get(uri); 3080 if (what != null) { 3081 mHandler.obtainMessage(what.intValue()).sendToTarget(); 3082 } else { 3083 loge("No matching event to send for URI=" + uri); 3084 } 3085 } 3086 } 3087 3088 private static void log(String s) { 3089 Slog.d(TAG, s); 3090 } 3091 3092 private static void loge(String s) { 3093 Slog.e(TAG, s); 3094 } 3095 3096 private static <T> T checkNotNull(T value, String message) { 3097 if (value == null) { 3098 throw new NullPointerException(message); 3099 } 3100 return value; 3101 } 3102 3103 /** 3104 * Prepare for a VPN application. 3105 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3106 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3107 * 3108 * @param oldPackage Package name of the application which currently controls VPN, which will 3109 * be replaced. If there is no such application, this should should either be 3110 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3111 * @param newPackage Package name of the application which should gain control of VPN, or 3112 * {@code null} to disable. 3113 * @param userId User for whom to prepare the new VPN. 3114 * 3115 * @hide 3116 */ 3117 @Override 3118 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3119 int userId) { 3120 enforceCrossUserPermission(userId); 3121 throwIfLockdownEnabled(); 3122 3123 synchronized(mVpns) { 3124 Vpn vpn = mVpns.get(userId); 3125 if (vpn != null) { 3126 return vpn.prepare(oldPackage, newPackage); 3127 } else { 3128 return false; 3129 } 3130 } 3131 } 3132 3133 /** 3134 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3135 * This method is used by system-privileged apps. 3136 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3137 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3138 * 3139 * @param packageName The package for which authorization state should change. 3140 * @param userId User for whom {@code packageName} is installed. 3141 * @param authorized {@code true} if this app should be able to start a VPN connection without 3142 * explicit user approval, {@code false} if not. 3143 * 3144 * @hide 3145 */ 3146 @Override 3147 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3148 enforceCrossUserPermission(userId); 3149 3150 synchronized(mVpns) { 3151 Vpn vpn = mVpns.get(userId); 3152 if (vpn != null) { 3153 vpn.setPackageAuthorization(packageName, authorized); 3154 } 3155 } 3156 } 3157 3158 /** 3159 * Configure a TUN interface and return its file descriptor. Parameters 3160 * are encoded and opaque to this class. This method is used by VpnBuilder 3161 * and not available in ConnectivityManager. Permissions are checked in 3162 * Vpn class. 3163 * @hide 3164 */ 3165 @Override 3166 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3167 throwIfLockdownEnabled(); 3168 int user = UserHandle.getUserId(Binder.getCallingUid()); 3169 synchronized(mVpns) { 3170 return mVpns.get(user).establish(config); 3171 } 3172 } 3173 3174 /** 3175 * Start legacy VPN, controlling native daemons as needed. Creates a 3176 * secondary thread to perform connection work, returning quickly. 3177 */ 3178 @Override 3179 public void startLegacyVpn(VpnProfile profile) { 3180 throwIfLockdownEnabled(); 3181 final LinkProperties egress = getActiveLinkProperties(); 3182 if (egress == null) { 3183 throw new IllegalStateException("Missing active network connection"); 3184 } 3185 int user = UserHandle.getUserId(Binder.getCallingUid()); 3186 synchronized(mVpns) { 3187 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3188 } 3189 } 3190 3191 /** 3192 * Return the information of the ongoing legacy VPN. This method is used 3193 * by VpnSettings and not available in ConnectivityManager. Permissions 3194 * are checked in Vpn class. 3195 */ 3196 @Override 3197 public LegacyVpnInfo getLegacyVpnInfo(int userId) { 3198 enforceCrossUserPermission(userId); 3199 if (mLockdownEnabled) { 3200 return null; 3201 } 3202 3203 synchronized(mVpns) { 3204 return mVpns.get(userId).getLegacyVpnInfo(); 3205 } 3206 } 3207 3208 /** 3209 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3210 * and not available in ConnectivityManager. 3211 */ 3212 @Override 3213 public VpnInfo[] getAllVpnInfo() { 3214 enforceConnectivityInternalPermission(); 3215 if (mLockdownEnabled) { 3216 return new VpnInfo[0]; 3217 } 3218 3219 synchronized(mVpns) { 3220 List<VpnInfo> infoList = new ArrayList<>(); 3221 for (int i = 0; i < mVpns.size(); i++) { 3222 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3223 if (info != null) { 3224 infoList.add(info); 3225 } 3226 } 3227 return infoList.toArray(new VpnInfo[infoList.size()]); 3228 } 3229 } 3230 3231 /** 3232 * @return VPN information for accounting, or null if we can't retrieve all required 3233 * information, e.g primary underlying iface. 3234 */ 3235 @Nullable 3236 private VpnInfo createVpnInfo(Vpn vpn) { 3237 VpnInfo info = vpn.getVpnInfo(); 3238 if (info == null) { 3239 return null; 3240 } 3241 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3242 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3243 // the underlyingNetworks list. 3244 if (underlyingNetworks == null) { 3245 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3246 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3247 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3248 } 3249 } else if (underlyingNetworks.length > 0) { 3250 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3251 if (linkProperties != null) { 3252 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3253 } 3254 } 3255 return info.primaryUnderlyingIface == null ? null : info; 3256 } 3257 3258 /** 3259 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3260 * VpnDialogs and not available in ConnectivityManager. 3261 * Permissions are checked in Vpn class. 3262 * @hide 3263 */ 3264 @Override 3265 public VpnConfig getVpnConfig(int userId) { 3266 enforceCrossUserPermission(userId); 3267 synchronized(mVpns) { 3268 Vpn vpn = mVpns.get(userId); 3269 if (vpn != null) { 3270 return vpn.getVpnConfig(); 3271 } else { 3272 return null; 3273 } 3274 } 3275 } 3276 3277 @Override 3278 public boolean updateLockdownVpn() { 3279 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3280 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3281 return false; 3282 } 3283 3284 // Tear down existing lockdown if profile was removed 3285 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3286 if (mLockdownEnabled) { 3287 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3288 final VpnProfile profile = VpnProfile.decode( 3289 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3290 if (profile == null) { 3291 Slog.e(TAG, "Lockdown VPN configured invalid profile " + profileName); 3292 setLockdownTracker(null); 3293 return true; 3294 } 3295 int user = UserHandle.getUserId(Binder.getCallingUid()); 3296 synchronized(mVpns) { 3297 Vpn vpn = mVpns.get(user); 3298 if (vpn == null) { 3299 Slog.w(TAG, "VPN for user " + user + " not ready yet. Skipping lockdown"); 3300 return false; 3301 } 3302 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, vpn, profile)); 3303 } 3304 } else { 3305 setLockdownTracker(null); 3306 } 3307 3308 return true; 3309 } 3310 3311 /** 3312 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3313 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3314 */ 3315 private void setLockdownTracker(LockdownVpnTracker tracker) { 3316 // Shutdown any existing tracker 3317 final LockdownVpnTracker existing = mLockdownTracker; 3318 mLockdownTracker = null; 3319 if (existing != null) { 3320 existing.shutdown(); 3321 } 3322 3323 try { 3324 if (tracker != null) { 3325 mNetd.setFirewallEnabled(true); 3326 mNetd.setFirewallInterfaceRule("lo", true); 3327 mLockdownTracker = tracker; 3328 mLockdownTracker.init(); 3329 } else { 3330 mNetd.setFirewallEnabled(false); 3331 } 3332 } catch (RemoteException e) { 3333 // ignored; NMS lives inside system_server 3334 } 3335 } 3336 3337 private void throwIfLockdownEnabled() { 3338 if (mLockdownEnabled) { 3339 throw new IllegalStateException("Unavailable in lockdown mode"); 3340 } 3341 } 3342 3343 /** 3344 * Sets up or tears down the always-on VPN for user {@param user} as appropriate. 3345 * 3346 * @return {@code false} in case of errors; {@code true} otherwise. 3347 */ 3348 private boolean updateAlwaysOnVpn(int user) { 3349 final String lockdownPackage = getAlwaysOnVpnPackage(user); 3350 if (lockdownPackage == null) { 3351 return true; 3352 } 3353 3354 // Create an intent to start the VPN service declared in the app's manifest. 3355 Intent serviceIntent = new Intent(VpnConfig.SERVICE_INTERFACE); 3356 serviceIntent.setPackage(lockdownPackage); 3357 3358 try { 3359 return mContext.startServiceAsUser(serviceIntent, UserHandle.of(user)) != null; 3360 } catch (RuntimeException e) { 3361 return false; 3362 } 3363 } 3364 3365 @Override 3366 public boolean setAlwaysOnVpnPackage(int userId, String packageName, boolean lockdown) { 3367 enforceConnectivityInternalPermission(); 3368 enforceCrossUserPermission(userId); 3369 3370 // Can't set always-on VPN if legacy VPN is already in lockdown mode. 3371 if (LockdownVpnTracker.isEnabled()) { 3372 return false; 3373 } 3374 3375 // If the current VPN package is the same as the new one, this is a no-op 3376 final String oldPackage = getAlwaysOnVpnPackage(userId); 3377 if (TextUtils.equals(oldPackage, packageName)) { 3378 return true; 3379 } 3380 3381 synchronized (mVpns) { 3382 Vpn vpn = mVpns.get(userId); 3383 if (vpn == null) { 3384 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3385 return false; 3386 } 3387 if (!vpn.setAlwaysOnPackage(packageName)) { 3388 return false; 3389 } 3390 if (!updateAlwaysOnVpn(userId)) { 3391 vpn.setAlwaysOnPackage(null); 3392 return false; 3393 } 3394 } 3395 return true; 3396 } 3397 3398 @Override 3399 public String getAlwaysOnVpnPackage(int userId) { 3400 enforceConnectivityInternalPermission(); 3401 enforceCrossUserPermission(userId); 3402 3403 synchronized (mVpns) { 3404 Vpn vpn = mVpns.get(userId); 3405 if (vpn == null) { 3406 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3407 return null; 3408 } 3409 return vpn.getAlwaysOnPackage(); 3410 } 3411 } 3412 3413 @Override 3414 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3415 // TODO: Remove? Any reason to trigger a provisioning check? 3416 return -1; 3417 } 3418 3419 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3420 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3421 3422 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3423 Intent intent = new Intent(action); 3424 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3425 // Concatenate the range of types onto the range of NetIDs. 3426 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3427 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3428 networkType, null, pendingIntent, false); 3429 } 3430 3431 /** 3432 * Show or hide network provisioning notifications. 3433 * 3434 * We use notifications for two purposes: to notify that a network requires sign in 3435 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3436 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3437 * particular network we can display the notification type that was most recently requested. 3438 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3439 * might first display NO_INTERNET, and then when the captive portal check completes, display 3440 * SIGN_IN. 3441 * 3442 * @param id an identifier that uniquely identifies this notification. This must match 3443 * between show and hide calls. We use the NetID value but for legacy callers 3444 * we concatenate the range of types with the range of NetIDs. 3445 */ 3446 private void setProvNotificationVisibleIntent(boolean visible, int id, 3447 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent, 3448 boolean highPriority) { 3449 if (VDBG || (DBG && visible)) { 3450 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3451 + " networkType=" + getNetworkTypeName(networkType) 3452 + " extraInfo=" + extraInfo + " highPriority=" + highPriority); 3453 } 3454 3455 Resources r = Resources.getSystem(); 3456 NotificationManager notificationManager = (NotificationManager) mContext 3457 .getSystemService(Context.NOTIFICATION_SERVICE); 3458 3459 if (visible) { 3460 CharSequence title; 3461 CharSequence details; 3462 int icon; 3463 if (notifyType == NotificationType.NO_INTERNET && 3464 networkType == ConnectivityManager.TYPE_WIFI) { 3465 title = r.getString(R.string.wifi_no_internet, 0); 3466 details = r.getString(R.string.wifi_no_internet_detailed); 3467 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3468 } else if (notifyType == NotificationType.SIGN_IN) { 3469 switch (networkType) { 3470 case ConnectivityManager.TYPE_WIFI: 3471 title = r.getString(R.string.wifi_available_sign_in, 0); 3472 details = r.getString(R.string.network_available_sign_in_detailed, 3473 extraInfo); 3474 icon = R.drawable.stat_notify_wifi_in_range; 3475 break; 3476 case ConnectivityManager.TYPE_MOBILE: 3477 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3478 title = r.getString(R.string.network_available_sign_in, 0); 3479 // TODO: Change this to pull from NetworkInfo once a printable 3480 // name has been added to it 3481 details = mTelephonyManager.getNetworkOperatorName(); 3482 icon = R.drawable.stat_notify_rssi_in_range; 3483 break; 3484 default: 3485 title = r.getString(R.string.network_available_sign_in, 0); 3486 details = r.getString(R.string.network_available_sign_in_detailed, 3487 extraInfo); 3488 icon = R.drawable.stat_notify_rssi_in_range; 3489 break; 3490 } 3491 } else { 3492 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3493 + getNetworkTypeName(networkType)); 3494 return; 3495 } 3496 3497 Notification notification = new Notification.Builder(mContext) 3498 .setWhen(0) 3499 .setSmallIcon(icon) 3500 .setAutoCancel(true) 3501 .setTicker(title) 3502 .setColor(mContext.getColor( 3503 com.android.internal.R.color.system_notification_accent_color)) 3504 .setContentTitle(title) 3505 .setContentText(details) 3506 .setContentIntent(intent) 3507 .setLocalOnly(true) 3508 .setPriority(highPriority ? 3509 Notification.PRIORITY_HIGH : 3510 Notification.PRIORITY_DEFAULT) 3511 .setDefaults(highPriority ? Notification.DEFAULT_ALL : 0) 3512 .setOnlyAlertOnce(true) 3513 .build(); 3514 3515 try { 3516 notificationManager.notify(NOTIFICATION_ID, id, notification); 3517 } catch (NullPointerException npe) { 3518 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3519 npe.printStackTrace(); 3520 } 3521 } else { 3522 try { 3523 notificationManager.cancel(NOTIFICATION_ID, id); 3524 } catch (NullPointerException npe) { 3525 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3526 npe.printStackTrace(); 3527 } 3528 } 3529 } 3530 3531 /** Location to an updatable file listing carrier provisioning urls. 3532 * An example: 3533 * 3534 * <?xml version="1.0" encoding="utf-8"?> 3535 * <provisioningUrls> 3536 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3537 * </provisioningUrls> 3538 */ 3539 private static final String PROVISIONING_URL_PATH = 3540 "/data/misc/radio/provisioning_urls.xml"; 3541 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3542 3543 /** XML tag for root element. */ 3544 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3545 /** XML tag for individual url */ 3546 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3547 /** XML attribute for mcc */ 3548 private static final String ATTR_MCC = "mcc"; 3549 /** XML attribute for mnc */ 3550 private static final String ATTR_MNC = "mnc"; 3551 3552 private String getProvisioningUrlBaseFromFile() { 3553 FileReader fileReader = null; 3554 XmlPullParser parser = null; 3555 Configuration config = mContext.getResources().getConfiguration(); 3556 3557 try { 3558 fileReader = new FileReader(mProvisioningUrlFile); 3559 parser = Xml.newPullParser(); 3560 parser.setInput(fileReader); 3561 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3562 3563 while (true) { 3564 XmlUtils.nextElement(parser); 3565 3566 String element = parser.getName(); 3567 if (element == null) break; 3568 3569 if (element.equals(TAG_PROVISIONING_URL)) { 3570 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3571 try { 3572 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3573 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3574 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3575 parser.next(); 3576 if (parser.getEventType() == XmlPullParser.TEXT) { 3577 return parser.getText(); 3578 } 3579 } 3580 } 3581 } catch (NumberFormatException e) { 3582 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3583 } 3584 } 3585 } 3586 return null; 3587 } catch (FileNotFoundException e) { 3588 loge("Carrier Provisioning Urls file not found"); 3589 } catch (XmlPullParserException e) { 3590 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3591 } catch (IOException e) { 3592 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3593 } finally { 3594 if (fileReader != null) { 3595 try { 3596 fileReader.close(); 3597 } catch (IOException e) {} 3598 } 3599 } 3600 return null; 3601 } 3602 3603 @Override 3604 public String getMobileProvisioningUrl() { 3605 enforceConnectivityInternalPermission(); 3606 String url = getProvisioningUrlBaseFromFile(); 3607 if (TextUtils.isEmpty(url)) { 3608 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3609 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3610 } else { 3611 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3612 } 3613 // populate the iccid, imei and phone number in the provisioning url. 3614 if (!TextUtils.isEmpty(url)) { 3615 String phoneNumber = mTelephonyManager.getLine1Number(); 3616 if (TextUtils.isEmpty(phoneNumber)) { 3617 phoneNumber = "0000000000"; 3618 } 3619 url = String.format(url, 3620 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3621 mTelephonyManager.getDeviceId() /* IMEI */, 3622 phoneNumber /* Phone numer */); 3623 } 3624 3625 return url; 3626 } 3627 3628 @Override 3629 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3630 String action) { 3631 enforceConnectivityInternalPermission(); 3632 final long ident = Binder.clearCallingIdentity(); 3633 try { 3634 setProvNotificationVisible(visible, networkType, action); 3635 } finally { 3636 Binder.restoreCallingIdentity(ident); 3637 } 3638 } 3639 3640 @Override 3641 public void setAirplaneMode(boolean enable) { 3642 enforceConnectivityInternalPermission(); 3643 final long ident = Binder.clearCallingIdentity(); 3644 try { 3645 final ContentResolver cr = mContext.getContentResolver(); 3646 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3647 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3648 intent.putExtra("state", enable); 3649 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3650 } finally { 3651 Binder.restoreCallingIdentity(ident); 3652 } 3653 } 3654 3655 private void onUserStart(int userId) { 3656 synchronized(mVpns) { 3657 Vpn userVpn = mVpns.get(userId); 3658 if (userVpn != null) { 3659 loge("Starting user already has a VPN"); 3660 return; 3661 } 3662 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3663 mVpns.put(userId, userVpn); 3664 } 3665 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3666 updateLockdownVpn(); 3667 } else { 3668 updateAlwaysOnVpn(userId); 3669 } 3670 } 3671 3672 private void onUserStop(int userId) { 3673 synchronized(mVpns) { 3674 Vpn userVpn = mVpns.get(userId); 3675 if (userVpn == null) { 3676 loge("Stopped user has no VPN"); 3677 return; 3678 } 3679 mVpns.delete(userId); 3680 } 3681 } 3682 3683 private void onUserAdded(int userId) { 3684 synchronized(mVpns) { 3685 final int vpnsSize = mVpns.size(); 3686 for (int i = 0; i < vpnsSize; i++) { 3687 Vpn vpn = mVpns.valueAt(i); 3688 vpn.onUserAdded(userId); 3689 } 3690 } 3691 } 3692 3693 private void onUserRemoved(int userId) { 3694 synchronized(mVpns) { 3695 final int vpnsSize = mVpns.size(); 3696 for (int i = 0; i < vpnsSize; i++) { 3697 Vpn vpn = mVpns.valueAt(i); 3698 vpn.onUserRemoved(userId); 3699 } 3700 } 3701 } 3702 3703 private void onUserUnlocked(int userId) { 3704 // User present may be sent because of an unlock, which might mean an unlocked keystore. 3705 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3706 updateLockdownVpn(); 3707 } else { 3708 updateAlwaysOnVpn(userId); 3709 } 3710 } 3711 3712 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3713 @Override 3714 public void onReceive(Context context, Intent intent) { 3715 final String action = intent.getAction(); 3716 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3717 if (userId == UserHandle.USER_NULL) return; 3718 3719 if (Intent.ACTION_USER_STARTED.equals(action)) { 3720 onUserStart(userId); 3721 } else if (Intent.ACTION_USER_STOPPED.equals(action)) { 3722 onUserStop(userId); 3723 } else if (Intent.ACTION_USER_ADDED.equals(action)) { 3724 onUserAdded(userId); 3725 } else if (Intent.ACTION_USER_REMOVED.equals(action)) { 3726 onUserRemoved(userId); 3727 } else if (Intent.ACTION_USER_UNLOCKED.equals(action)) { 3728 onUserUnlocked(userId); 3729 } 3730 } 3731 }; 3732 3733 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3734 new HashMap<Messenger, NetworkFactoryInfo>(); 3735 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3736 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3737 3738 private static final int MAX_NETWORK_REQUESTS_PER_UID = 100; 3739 // Map from UID to number of NetworkRequests that UID has filed. 3740 @GuardedBy("mUidToNetworkRequestCount") 3741 private final SparseIntArray mUidToNetworkRequestCount = new SparseIntArray(); 3742 3743 private static class NetworkFactoryInfo { 3744 public final String name; 3745 public final Messenger messenger; 3746 public final AsyncChannel asyncChannel; 3747 3748 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3749 this.name = name; 3750 this.messenger = messenger; 3751 this.asyncChannel = asyncChannel; 3752 } 3753 } 3754 3755 /** 3756 * A NetworkRequest as registered by an application can be one of three 3757 * types: 3758 * 3759 * - "listen", for which the framework will issue callbacks about any 3760 * and all networks that match the specified NetworkCapabilities, 3761 * 3762 * - "request", capable of causing a specific network to be created 3763 * first (e.g. a telephony DUN request), the framework will issue 3764 * callbacks about the single, highest scoring current network 3765 * (if any) that matches the specified NetworkCapabilities, or 3766 * 3767 * - "track the default network", a hybrid of the two designed such 3768 * that the framework will issue callbacks for the single, highest 3769 * scoring current network (if any) that matches the capabilities of 3770 * the default Internet request (mDefaultRequest), but which cannot 3771 * cause the framework to either create or retain the existence of 3772 * any specific network. 3773 * 3774 */ 3775 private static enum NetworkRequestType { 3776 LISTEN, 3777 TRACK_DEFAULT, 3778 REQUEST 3779 }; 3780 3781 /** 3782 * Tracks info about the requester. 3783 * Also used to notice when the calling process dies so we can self-expire 3784 */ 3785 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3786 final NetworkRequest request; 3787 final PendingIntent mPendingIntent; 3788 boolean mPendingIntentSent; 3789 private final IBinder mBinder; 3790 final int mPid; 3791 final int mUid; 3792 final Messenger messenger; 3793 private final NetworkRequestType mType; 3794 3795 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, NetworkRequestType type) { 3796 request = r; 3797 mPendingIntent = pi; 3798 messenger = null; 3799 mBinder = null; 3800 mPid = getCallingPid(); 3801 mUid = getCallingUid(); 3802 mType = type; 3803 enforceRequestCountLimit(); 3804 } 3805 3806 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, NetworkRequestType type) { 3807 super(); 3808 messenger = m; 3809 request = r; 3810 mBinder = binder; 3811 mPid = getCallingPid(); 3812 mUid = getCallingUid(); 3813 mType = type; 3814 mPendingIntent = null; 3815 enforceRequestCountLimit(); 3816 3817 try { 3818 mBinder.linkToDeath(this, 0); 3819 } catch (RemoteException e) { 3820 binderDied(); 3821 } 3822 } 3823 3824 private void enforceRequestCountLimit() { 3825 synchronized (mUidToNetworkRequestCount) { 3826 int networkRequests = mUidToNetworkRequestCount.get(mUid, 0) + 1; 3827 if (networkRequests >= MAX_NETWORK_REQUESTS_PER_UID) { 3828 throw new IllegalArgumentException("Too many NetworkRequests filed"); 3829 } 3830 mUidToNetworkRequestCount.put(mUid, networkRequests); 3831 } 3832 } 3833 3834 private String typeString() { 3835 switch (mType) { 3836 case LISTEN: return "Listen"; 3837 case REQUEST: return "Request"; 3838 case TRACK_DEFAULT: return "Track default"; 3839 default: 3840 return "unknown type"; 3841 } 3842 } 3843 3844 void unlinkDeathRecipient() { 3845 if (mBinder != null) { 3846 mBinder.unlinkToDeath(this, 0); 3847 } 3848 } 3849 3850 public void binderDied() { 3851 log("ConnectivityService NetworkRequestInfo binderDied(" + 3852 request + ", " + mBinder + ")"); 3853 releaseNetworkRequest(request); 3854 } 3855 3856 /** 3857 * Returns true iff. the contained NetworkRequest is one that: 3858 * 3859 * - should be associated with at most one satisfying network 3860 * at a time; 3861 * 3862 * - should cause a network to be kept up if it is the only network 3863 * which can satisfy the NetworkReqeust. 3864 * 3865 * For full detail of how isRequest() is used for pairing Networks with 3866 * NetworkRequests read rematchNetworkAndRequests(). 3867 * 3868 * TODO: Rename to something more properly descriptive. 3869 */ 3870 public boolean isRequest() { 3871 return (mType == NetworkRequestType.TRACK_DEFAULT) || 3872 (mType == NetworkRequestType.REQUEST); 3873 } 3874 3875 public String toString() { 3876 return typeString() + 3877 " from uid/pid:" + mUid + "/" + mPid + 3878 " for " + request + 3879 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3880 } 3881 } 3882 3883 private void ensureRequestableCapabilities(NetworkCapabilities networkCapabilities) { 3884 final String badCapability = networkCapabilities.describeFirstNonRequestableCapability(); 3885 if (badCapability != null) { 3886 throw new IllegalArgumentException("Cannot request network with " + badCapability); 3887 } 3888 } 3889 3890 private ArrayList<Integer> getSignalStrengthThresholds(NetworkAgentInfo nai) { 3891 final SortedSet<Integer> thresholds = new TreeSet(); 3892 synchronized (nai) { 3893 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3894 if (nri.request.networkCapabilities.hasSignalStrength() && 3895 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 3896 thresholds.add(nri.request.networkCapabilities.getSignalStrength()); 3897 } 3898 } 3899 } 3900 return new ArrayList<Integer>(thresholds); 3901 } 3902 3903 private void updateSignalStrengthThresholds( 3904 NetworkAgentInfo nai, String reason, NetworkRequest request) { 3905 ArrayList<Integer> thresholdsArray = getSignalStrengthThresholds(nai); 3906 Bundle thresholds = new Bundle(); 3907 thresholds.putIntegerArrayList("thresholds", thresholdsArray); 3908 3909 if (VDBG || (DBG && !"CONNECT".equals(reason))) { 3910 String detail; 3911 if (request != null && request.networkCapabilities.hasSignalStrength()) { 3912 detail = reason + " " + request.networkCapabilities.getSignalStrength(); 3913 } else { 3914 detail = reason; 3915 } 3916 log(String.format("updateSignalStrengthThresholds: %s, sending %s to %s", 3917 detail, Arrays.toString(thresholdsArray.toArray()), nai.name())); 3918 } 3919 3920 nai.asyncChannel.sendMessage( 3921 android.net.NetworkAgent.CMD_SET_SIGNAL_STRENGTH_THRESHOLDS, 3922 0, 0, thresholds); 3923 } 3924 3925 @Override 3926 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3927 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3928 final NetworkRequestType type = (networkCapabilities == null) 3929 ? NetworkRequestType.TRACK_DEFAULT 3930 : NetworkRequestType.REQUEST; 3931 // If the requested networkCapabilities is null, take them instead from 3932 // the default network request. This allows callers to keep track of 3933 // the system default network. 3934 if (type == NetworkRequestType.TRACK_DEFAULT) { 3935 networkCapabilities = new NetworkCapabilities(mDefaultRequest.networkCapabilities); 3936 enforceAccessPermission(); 3937 } else { 3938 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3939 enforceNetworkRequestPermissions(networkCapabilities); 3940 } 3941 enforceMeteredApnPolicy(networkCapabilities); 3942 ensureRequestableCapabilities(networkCapabilities); 3943 3944 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3945 throw new IllegalArgumentException("Bad timeout specified"); 3946 } 3947 3948 if (NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER 3949 .equals(networkCapabilities.getNetworkSpecifier())) { 3950 throw new IllegalArgumentException("Invalid network specifier - must not be '" 3951 + NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER + "'"); 3952 } 3953 3954 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3955 nextNetworkRequestId()); 3956 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, type); 3957 if (DBG) log("requestNetwork for " + nri); 3958 3959 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3960 if (timeoutMs > 0) { 3961 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3962 nri), timeoutMs); 3963 } 3964 return networkRequest; 3965 } 3966 3967 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3968 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3969 enforceConnectivityInternalPermission(); 3970 } else { 3971 enforceChangePermission(); 3972 } 3973 } 3974 3975 @Override 3976 public boolean requestBandwidthUpdate(Network network) { 3977 enforceAccessPermission(); 3978 NetworkAgentInfo nai = null; 3979 if (network == null) { 3980 return false; 3981 } 3982 synchronized (mNetworkForNetId) { 3983 nai = mNetworkForNetId.get(network.netId); 3984 } 3985 if (nai != null) { 3986 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3987 return true; 3988 } 3989 return false; 3990 } 3991 3992 3993 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3994 // if UID is restricted, don't allow them to bring up metered APNs 3995 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3996 final int uidRules; 3997 final int uid = Binder.getCallingUid(); 3998 synchronized(mRulesLock) { 3999 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 4000 } 4001 if (uidRules != RULE_ALLOW_ALL) { 4002 // we could silently fail or we can filter the available nets to only give 4003 // them those they have access to. Chose the more useful 4004 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 4005 } 4006 } 4007 } 4008 4009 @Override 4010 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 4011 PendingIntent operation) { 4012 checkNotNull(operation, "PendingIntent cannot be null."); 4013 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4014 enforceNetworkRequestPermissions(networkCapabilities); 4015 enforceMeteredApnPolicy(networkCapabilities); 4016 ensureRequestableCapabilities(networkCapabilities); 4017 4018 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 4019 nextNetworkRequestId()); 4020 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 4021 NetworkRequestType.REQUEST); 4022 if (DBG) log("pendingRequest for " + nri); 4023 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 4024 nri)); 4025 return networkRequest; 4026 } 4027 4028 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 4029 mHandler.sendMessageDelayed( 4030 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 4031 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 4032 } 4033 4034 @Override 4035 public void releasePendingNetworkRequest(PendingIntent operation) { 4036 checkNotNull(operation, "PendingIntent cannot be null."); 4037 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 4038 getCallingUid(), 0, operation)); 4039 } 4040 4041 // In order to implement the compatibility measure for pre-M apps that call 4042 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 4043 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 4044 // This ensures it has permission to do so. 4045 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 4046 if (nc == null) { 4047 return false; 4048 } 4049 int[] transportTypes = nc.getTransportTypes(); 4050 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 4051 return false; 4052 } 4053 try { 4054 mContext.enforceCallingOrSelfPermission( 4055 android.Manifest.permission.ACCESS_WIFI_STATE, 4056 "ConnectivityService"); 4057 } catch (SecurityException e) { 4058 return false; 4059 } 4060 return true; 4061 } 4062 4063 @Override 4064 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 4065 Messenger messenger, IBinder binder) { 4066 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 4067 enforceAccessPermission(); 4068 } 4069 4070 NetworkRequest networkRequest = new NetworkRequest( 4071 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 4072 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 4073 NetworkRequestType.LISTEN); 4074 if (VDBG) log("listenForNetwork for " + nri); 4075 4076 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4077 return networkRequest; 4078 } 4079 4080 @Override 4081 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 4082 PendingIntent operation) { 4083 checkNotNull(operation, "PendingIntent cannot be null."); 4084 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 4085 enforceAccessPermission(); 4086 } 4087 4088 NetworkRequest networkRequest = new NetworkRequest( 4089 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 4090 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 4091 NetworkRequestType.LISTEN); 4092 if (VDBG) log("pendingListenForNetwork for " + nri); 4093 4094 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4095 } 4096 4097 @Override 4098 public void releaseNetworkRequest(NetworkRequest networkRequest) { 4099 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 4100 0, networkRequest)); 4101 } 4102 4103 @Override 4104 public void registerNetworkFactory(Messenger messenger, String name) { 4105 enforceConnectivityInternalPermission(); 4106 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 4107 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 4108 } 4109 4110 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 4111 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 4112 mNetworkFactoryInfos.put(nfi.messenger, nfi); 4113 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 4114 } 4115 4116 @Override 4117 public void unregisterNetworkFactory(Messenger messenger) { 4118 enforceConnectivityInternalPermission(); 4119 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 4120 } 4121 4122 private void handleUnregisterNetworkFactory(Messenger messenger) { 4123 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 4124 if (nfi == null) { 4125 loge("Failed to find Messenger in unregisterNetworkFactory"); 4126 return; 4127 } 4128 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 4129 } 4130 4131 /** 4132 * NetworkAgentInfo supporting a request by requestId. 4133 * These have already been vetted (their Capabilities satisfy the request) 4134 * and the are the highest scored network available. 4135 * the are keyed off the Requests requestId. 4136 */ 4137 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 4138 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 4139 new SparseArray<NetworkAgentInfo>(); 4140 4141 // NOTE: Accessed on multiple threads, must be synchronized on itself. 4142 @GuardedBy("mNetworkForNetId") 4143 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 4144 new SparseArray<NetworkAgentInfo>(); 4145 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 4146 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 4147 // there may not be a strict 1:1 correlation between the two. 4148 @GuardedBy("mNetworkForNetId") 4149 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 4150 4151 // NetworkAgentInfo keyed off its connecting messenger 4152 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 4153 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 4154 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 4155 new HashMap<Messenger, NetworkAgentInfo>(); 4156 4157 @GuardedBy("mBlockedAppUids") 4158 private final HashSet<Integer> mBlockedAppUids = new HashSet(); 4159 4160 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 4161 private final NetworkRequest mDefaultRequest; 4162 4163 // Request used to optionally keep mobile data active even when higher 4164 // priority networks like Wi-Fi are active. 4165 private final NetworkRequest mDefaultMobileDataRequest; 4166 4167 private NetworkAgentInfo getDefaultNetwork() { 4168 return mNetworkForRequestId.get(mDefaultRequest.requestId); 4169 } 4170 4171 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 4172 return nai == getDefaultNetwork(); 4173 } 4174 4175 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 4176 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 4177 int currentScore, NetworkMisc networkMisc) { 4178 enforceConnectivityInternalPermission(); 4179 4180 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 4181 // satisfies mDefaultRequest. 4182 final NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 4183 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 4184 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 4185 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest, this); 4186 synchronized (this) { 4187 nai.networkMonitor.systemReady = mSystemReady; 4188 } 4189 addValidationLogs(nai.networkMonitor.getValidationLogs(), nai.network); 4190 if (DBG) log("registerNetworkAgent " + nai); 4191 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 4192 return nai.network.netId; 4193 } 4194 4195 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 4196 if (VDBG) log("Got NetworkAgent Messenger"); 4197 mNetworkAgentInfos.put(na.messenger, na); 4198 synchronized (mNetworkForNetId) { 4199 mNetworkForNetId.put(na.network.netId, na); 4200 } 4201 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 4202 NetworkInfo networkInfo = na.networkInfo; 4203 na.networkInfo = null; 4204 updateNetworkInfo(na, networkInfo); 4205 } 4206 4207 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 4208 LinkProperties newLp = networkAgent.linkProperties; 4209 int netId = networkAgent.network.netId; 4210 4211 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 4212 // we do anything else, make sure its LinkProperties are accurate. 4213 if (networkAgent.clatd != null) { 4214 networkAgent.clatd.fixupLinkProperties(oldLp); 4215 } 4216 4217 updateInterfaces(newLp, oldLp, netId); 4218 updateMtu(newLp, oldLp); 4219 // TODO - figure out what to do for clat 4220// for (LinkProperties lp : newLp.getStackedLinks()) { 4221// updateMtu(lp, null); 4222// } 4223 updateTcpBufferSizes(networkAgent); 4224 4225 updateRoutes(newLp, oldLp, netId); 4226 updateDnses(newLp, oldLp, netId); 4227 4228 updateClat(newLp, oldLp, networkAgent); 4229 if (isDefaultNetwork(networkAgent)) { 4230 handleApplyDefaultProxy(newLp.getHttpProxy()); 4231 } else { 4232 updateProxy(newLp, oldLp, networkAgent); 4233 } 4234 // TODO - move this check to cover the whole function 4235 if (!Objects.equals(newLp, oldLp)) { 4236 notifyIfacesChangedForNetworkStats(); 4237 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 4238 } 4239 4240 mKeepaliveTracker.handleCheckKeepalivesStillValid(networkAgent); 4241 } 4242 4243 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 4244 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 4245 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 4246 4247 if (!wasRunningClat && shouldRunClat) { 4248 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 4249 nai.clatd.start(); 4250 } else if (wasRunningClat && !shouldRunClat) { 4251 nai.clatd.stop(); 4252 } 4253 } 4254 4255 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 4256 CompareResult<String> interfaceDiff = new CompareResult<String>(); 4257 if (oldLp != null) { 4258 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 4259 } else if (newLp != null) { 4260 interfaceDiff.added = newLp.getAllInterfaceNames(); 4261 } 4262 for (String iface : interfaceDiff.added) { 4263 try { 4264 if (DBG) log("Adding iface " + iface + " to network " + netId); 4265 mNetd.addInterfaceToNetwork(iface, netId); 4266 } catch (Exception e) { 4267 loge("Exception adding interface: " + e); 4268 } 4269 } 4270 for (String iface : interfaceDiff.removed) { 4271 try { 4272 if (DBG) log("Removing iface " + iface + " from network " + netId); 4273 mNetd.removeInterfaceFromNetwork(iface, netId); 4274 } catch (Exception e) { 4275 loge("Exception removing interface: " + e); 4276 } 4277 } 4278 } 4279 4280 /** 4281 * Have netd update routes from oldLp to newLp. 4282 * @return true if routes changed between oldLp and newLp 4283 */ 4284 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 4285 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 4286 if (oldLp != null) { 4287 routeDiff = oldLp.compareAllRoutes(newLp); 4288 } else if (newLp != null) { 4289 routeDiff.added = newLp.getAllRoutes(); 4290 } 4291 4292 // add routes before removing old in case it helps with continuous connectivity 4293 4294 // do this twice, adding non-nexthop routes first, then routes they are dependent on 4295 for (RouteInfo route : routeDiff.added) { 4296 if (route.hasGateway()) continue; 4297 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4298 try { 4299 mNetd.addRoute(netId, route); 4300 } catch (Exception e) { 4301 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 4302 loge("Exception in addRoute for non-gateway: " + e); 4303 } 4304 } 4305 } 4306 for (RouteInfo route : routeDiff.added) { 4307 if (route.hasGateway() == false) continue; 4308 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4309 try { 4310 mNetd.addRoute(netId, route); 4311 } catch (Exception e) { 4312 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4313 loge("Exception in addRoute for gateway: " + e); 4314 } 4315 } 4316 } 4317 4318 for (RouteInfo route : routeDiff.removed) { 4319 if (VDBG) log("Removing Route [" + route + "] from network " + netId); 4320 try { 4321 mNetd.removeRoute(netId, route); 4322 } catch (Exception e) { 4323 loge("Exception in removeRoute: " + e); 4324 } 4325 } 4326 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4327 } 4328 4329 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId) { 4330 if (oldLp != null && newLp.isIdenticalDnses(oldLp)) { 4331 return; // no updating necessary 4332 } 4333 4334 Collection<InetAddress> dnses = newLp.getDnsServers(); 4335 if (DBG) log("Setting DNS servers for network " + netId + " to " + dnses); 4336 try { 4337 mNetd.setDnsConfigurationForNetwork( 4338 netId, NetworkUtils.makeStrings(dnses), newLp.getDomains()); 4339 } catch (Exception e) { 4340 loge("Exception in setDnsConfigurationForNetwork: " + e); 4341 } 4342 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 4343 if (defaultNai != null && defaultNai.network.netId == netId) { 4344 setDefaultDnsSystemProperties(dnses); 4345 } 4346 flushVmDnsCache(); 4347 } 4348 4349 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4350 int last = 0; 4351 for (InetAddress dns : dnses) { 4352 ++last; 4353 String key = "net.dns" + last; 4354 String value = dns.getHostAddress(); 4355 SystemProperties.set(key, value); 4356 } 4357 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4358 String key = "net.dns" + i; 4359 SystemProperties.set(key, ""); 4360 } 4361 mNumDnsEntries = last; 4362 } 4363 4364 /** 4365 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 4366 * augmented with any stateful capabilities implied from {@code networkAgent} 4367 * (e.g., validated status and captive portal status). 4368 * 4369 * @param nai the network having its capabilities updated. 4370 * @param networkCapabilities the new network capabilities. 4371 */ 4372 private void updateCapabilities(NetworkAgentInfo nai, NetworkCapabilities networkCapabilities) { 4373 // Don't modify caller's NetworkCapabilities. 4374 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4375 if (nai.lastValidated) { 4376 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4377 } else { 4378 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4379 } 4380 if (nai.lastCaptivePortalDetected) { 4381 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4382 } else { 4383 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4384 } 4385 if (!Objects.equals(nai.networkCapabilities, networkCapabilities)) { 4386 final int oldScore = nai.getCurrentScore(); 4387 if (nai.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) != 4388 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED)) { 4389 try { 4390 mNetd.setNetworkPermission(nai.network.netId, 4391 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) ? 4392 null : NetworkManagementService.PERMISSION_SYSTEM); 4393 } catch (RemoteException e) { 4394 loge("Exception in setNetworkPermission: " + e); 4395 } 4396 } 4397 synchronized (nai) { 4398 nai.networkCapabilities = networkCapabilities; 4399 } 4400 rematchAllNetworksAndRequests(nai, oldScore); 4401 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 4402 } 4403 } 4404 4405 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4406 for (int i = 0; i < nai.networkRequests.size(); i++) { 4407 NetworkRequest nr = nai.networkRequests.valueAt(i); 4408 // Don't send listening requests to factories. b/17393458 4409 if (!isRequest(nr)) continue; 4410 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4411 } 4412 } 4413 4414 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4415 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4416 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4417 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4418 networkRequest); 4419 } 4420 } 4421 4422 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4423 int notificationType) { 4424 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4425 Intent intent = new Intent(); 4426 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4427 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4428 nri.mPendingIntentSent = true; 4429 sendIntent(nri.mPendingIntent, intent); 4430 } 4431 // else not handled 4432 } 4433 4434 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4435 mPendingIntentWakeLock.acquire(); 4436 try { 4437 if (DBG) log("Sending " + pendingIntent); 4438 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4439 } catch (PendingIntent.CanceledException e) { 4440 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4441 mPendingIntentWakeLock.release(); 4442 releasePendingNetworkRequest(pendingIntent); 4443 } 4444 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4445 } 4446 4447 @Override 4448 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4449 String resultData, Bundle resultExtras) { 4450 if (DBG) log("Finished sending " + pendingIntent); 4451 mPendingIntentWakeLock.release(); 4452 // Release with a delay so the receiving client has an opportunity to put in its 4453 // own request. 4454 releasePendingNetworkRequestWithDelay(pendingIntent); 4455 } 4456 4457 private void callCallbackForRequest(NetworkRequestInfo nri, 4458 NetworkAgentInfo networkAgent, int notificationType) { 4459 if (nri.messenger == null) return; // Default request has no msgr 4460 Bundle bundle = new Bundle(); 4461 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4462 new NetworkRequest(nri.request)); 4463 Message msg = Message.obtain(); 4464 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4465 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4466 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4467 } 4468 switch (notificationType) { 4469 case ConnectivityManager.CALLBACK_LOSING: { 4470 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4471 break; 4472 } 4473 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4474 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4475 new NetworkCapabilities(networkAgent.networkCapabilities)); 4476 break; 4477 } 4478 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4479 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4480 new LinkProperties(networkAgent.linkProperties)); 4481 break; 4482 } 4483 } 4484 msg.what = notificationType; 4485 msg.setData(bundle); 4486 try { 4487 if (VDBG) { 4488 log("sending notification " + notifyTypeToName(notificationType) + 4489 " for " + nri.request); 4490 } 4491 nri.messenger.send(msg); 4492 } catch (RemoteException e) { 4493 // may occur naturally in the race of binder death. 4494 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4495 } 4496 } 4497 4498 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4499 for (int i = 0; i < nai.networkRequests.size(); i++) { 4500 NetworkRequest nr = nai.networkRequests.valueAt(i); 4501 // Ignore listening requests. 4502 if (!isRequest(nr)) continue; 4503 loge("Dead network still had at least " + nr); 4504 break; 4505 } 4506 nai.asyncChannel.disconnect(); 4507 } 4508 4509 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4510 if (oldNetwork == null) { 4511 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4512 return; 4513 } 4514 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4515 teardownUnneededNetwork(oldNetwork); 4516 } 4517 4518 private void makeDefault(NetworkAgentInfo newNetwork, NetworkAgentInfo prevNetwork) { 4519 if (DBG) log("Switching to new default network: " + newNetwork); 4520 setupDataActivityTracking(newNetwork); 4521 try { 4522 mNetd.setDefaultNetId(newNetwork.network.netId); 4523 } catch (Exception e) { 4524 loge("Exception setting default network :" + e); 4525 } 4526 notifyLockdownVpn(newNetwork); 4527 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4528 updateTcpBufferSizes(newNetwork); 4529 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4530 logDefaultNetworkEvent(newNetwork, prevNetwork); 4531 } 4532 4533 // Handles a network appearing or improving its score. 4534 // 4535 // - Evaluates all current NetworkRequests that can be 4536 // satisfied by newNetwork, and reassigns to newNetwork 4537 // any such requests for which newNetwork is the best. 4538 // 4539 // - Lingers any validated Networks that as a result are no longer 4540 // needed. A network is needed if it is the best network for 4541 // one or more NetworkRequests, or if it is a VPN. 4542 // 4543 // - Tears down newNetwork if it just became validated 4544 // but turns out to be unneeded. 4545 // 4546 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4547 // networks that have no chance (i.e. even if validated) 4548 // of becoming the highest scoring network. 4549 // 4550 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4551 // it does not remove NetworkRequests that other Networks could better satisfy. 4552 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4553 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4554 // as it performs better by a factor of the number of Networks. 4555 // 4556 // @param newNetwork is the network to be matched against NetworkRequests. 4557 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4558 // performed to tear down unvalidated networks that have no chance (i.e. even if 4559 // validated) of becoming the highest scoring network. 4560 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, 4561 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4562 if (!newNetwork.everConnected) return; 4563 boolean keep = newNetwork.isVPN(); 4564 boolean isNewDefault = false; 4565 NetworkAgentInfo oldDefaultNetwork = null; 4566 if (VDBG) log("rematching " + newNetwork.name()); 4567 // Find and migrate to this Network any NetworkRequests for 4568 // which this network is now the best. 4569 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4570 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4571 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4572 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4573 final NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4574 final boolean satisfies = newNetwork.satisfies(nri.request); 4575 if (newNetwork == currentNetwork && satisfies) { 4576 if (VDBG) { 4577 log("Network " + newNetwork.name() + " was already satisfying" + 4578 " request " + nri.request.requestId + ". No change."); 4579 } 4580 keep = true; 4581 continue; 4582 } 4583 4584 // check if it satisfies the NetworkCapabilities 4585 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4586 if (satisfies) { 4587 if (!nri.isRequest()) { 4588 // This is not a request, it's a callback listener. 4589 // Add it to newNetwork regardless of score. 4590 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4591 continue; 4592 } 4593 4594 // next check if it's better than any current network we're using for 4595 // this request 4596 if (VDBG) { 4597 log("currentScore = " + 4598 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4599 ", newScore = " + newNetwork.getCurrentScore()); 4600 } 4601 if (currentNetwork == null || 4602 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4603 if (VDBG) log("rematch for " + newNetwork.name()); 4604 if (currentNetwork != null) { 4605 if (VDBG) log(" accepting network in place of " + currentNetwork.name()); 4606 currentNetwork.networkRequests.remove(nri.request.requestId); 4607 currentNetwork.networkLingered.add(nri.request); 4608 affectedNetworks.add(currentNetwork); 4609 } else { 4610 if (VDBG) log(" accepting network in place of null"); 4611 } 4612 unlinger(newNetwork); 4613 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4614 if (!newNetwork.addRequest(nri.request)) { 4615 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4616 } 4617 addedRequests.add(nri); 4618 keep = true; 4619 // Tell NetworkFactories about the new score, so they can stop 4620 // trying to connect if they know they cannot match it. 4621 // TODO - this could get expensive if we have alot of requests for this 4622 // network. Think about if there is a way to reduce this. Push 4623 // netid->request mapping to each factory? 4624 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4625 if (mDefaultRequest.requestId == nri.request.requestId) { 4626 isNewDefault = true; 4627 oldDefaultNetwork = currentNetwork; 4628 } 4629 } 4630 } else if (newNetwork.networkRequests.get(nri.request.requestId) != null) { 4631 // If "newNetwork" is listed as satisfying "nri" but no longer satisfies "nri", 4632 // mark it as no longer satisfying "nri". Because networks are processed by 4633 // rematchAllNetworkAndRequests() in descending score order, "currentNetwork" will 4634 // match "newNetwork" before this loop will encounter a "currentNetwork" with higher 4635 // score than "newNetwork" and where "currentNetwork" no longer satisfies "nri". 4636 // This means this code doesn't have to handle the case where "currentNetwork" no 4637 // longer satisfies "nri" when "currentNetwork" does not equal "newNetwork". 4638 if (DBG) { 4639 log("Network " + newNetwork.name() + " stopped satisfying" + 4640 " request " + nri.request.requestId); 4641 } 4642 newNetwork.networkRequests.remove(nri.request.requestId); 4643 if (currentNetwork == newNetwork) { 4644 mNetworkForRequestId.remove(nri.request.requestId); 4645 sendUpdatedScoreToFactories(nri.request, 0); 4646 } else { 4647 if (nri.isRequest()) { 4648 Slog.wtf(TAG, "BUG: Removing request " + nri.request.requestId + " from " + 4649 newNetwork.name() + 4650 " without updating mNetworkForRequestId or factories!"); 4651 } 4652 } 4653 // TODO: technically, sending CALLBACK_LOST here is 4654 // incorrect if nri is a request (not a listen) and there 4655 // is a replacement network currently connected that can 4656 // satisfy it. However, the only capability that can both 4657 // a) be requested and b) change is NET_CAPABILITY_TRUSTED, 4658 // so this code is only incorrect for a network that loses 4659 // the TRUSTED capability, which is a rare case. 4660 callCallbackForRequest(nri, newNetwork, ConnectivityManager.CALLBACK_LOST); 4661 } 4662 } 4663 // Linger any networks that are no longer needed. 4664 for (NetworkAgentInfo nai : affectedNetworks) { 4665 if (nai.lingering) { 4666 // Already lingered. Nothing to do. This can only happen if "nai" is in 4667 // "affectedNetworks" twice. The reasoning being that to get added to 4668 // "affectedNetworks", "nai" must have been satisfying a NetworkRequest 4669 // (i.e. not lingered) so it could have only been lingered by this loop. 4670 // unneeded(nai) will be false and we'll call unlinger() below which would 4671 // be bad, so handle it here. 4672 } else if (unneeded(nai)) { 4673 linger(nai); 4674 } else { 4675 // Clear nai.networkLingered we might have added above. 4676 unlinger(nai); 4677 } 4678 } 4679 if (isNewDefault) { 4680 // Notify system services that this network is up. 4681 makeDefault(newNetwork, oldDefaultNetwork); 4682 synchronized (ConnectivityService.this) { 4683 // have a new default network, release the transition wakelock in 4684 // a second if it's held. The second pause is to allow apps 4685 // to reconnect over the new network 4686 if (mNetTransitionWakeLock.isHeld()) { 4687 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4688 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4689 mNetTransitionWakeLockSerialNumber, 0), 4690 1000); 4691 } 4692 } 4693 } 4694 4695 // do this after the default net is switched, but 4696 // before LegacyTypeTracker sends legacy broadcasts 4697 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4698 4699 if (isNewDefault) { 4700 // Maintain the illusion: since the legacy API only 4701 // understands one network at a time, we must pretend 4702 // that the current default network disconnected before 4703 // the new one connected. 4704 if (oldDefaultNetwork != null) { 4705 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4706 oldDefaultNetwork, true); 4707 } 4708 mDefaultInetConditionPublished = newNetwork.lastValidated ? 100 : 0; 4709 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4710 notifyLockdownVpn(newNetwork); 4711 } 4712 4713 if (keep) { 4714 // Notify battery stats service about this network, both the normal 4715 // interface and any stacked links. 4716 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4717 try { 4718 final IBatteryStats bs = BatteryStatsService.getService(); 4719 final int type = newNetwork.networkInfo.getType(); 4720 4721 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4722 bs.noteNetworkInterfaceType(baseIface, type); 4723 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4724 final String stackedIface = stacked.getInterfaceName(); 4725 bs.noteNetworkInterfaceType(stackedIface, type); 4726 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4727 } 4728 } catch (RemoteException ignored) { 4729 } 4730 4731 // This has to happen after the notifyNetworkCallbacks as that tickles each 4732 // ConnectivityManager instance so that legacy requests correctly bind dns 4733 // requests to this network. The legacy users are listening for this bcast 4734 // and will generally do a dns request so they can ensureRouteToHost and if 4735 // they do that before the callbacks happen they'll use the default network. 4736 // 4737 // TODO: Is there still a race here? We send the broadcast 4738 // after sending the callback, but if the app can receive the 4739 // broadcast before the callback, it might still break. 4740 // 4741 // This *does* introduce a race where if the user uses the new api 4742 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4743 // they may get old info. Reverse this after the old startUsing api is removed. 4744 // This is on top of the multiple intent sequencing referenced in the todo above. 4745 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4746 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4747 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4748 // legacy type tracker filters out repeat adds 4749 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4750 } 4751 } 4752 4753 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4754 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4755 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4756 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4757 if (newNetwork.isVPN()) { 4758 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4759 } 4760 } 4761 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4762 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4763 if (unneeded(nai)) { 4764 if (DBG) log("Reaping " + nai.name()); 4765 teardownUnneededNetwork(nai); 4766 } 4767 } 4768 } 4769 } 4770 4771 /** 4772 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4773 * being disconnected. 4774 * @param changed If only one Network's score or capabilities have been modified since the last 4775 * time this function was called, pass this Network in this argument, otherwise pass 4776 * null. 4777 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4778 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4779 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4780 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4781 * network's score. 4782 */ 4783 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4784 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4785 // to avoid the slowness. It is not simply enough to process just "changed", for 4786 // example in the case where "changed"'s score decreases and another network should begin 4787 // satifying a NetworkRequest that "changed" currently satisfies. 4788 4789 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4790 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4791 // rematchNetworkAndRequests() handles. 4792 if (changed != null && oldScore < changed.getCurrentScore()) { 4793 rematchNetworkAndRequests(changed, ReapUnvalidatedNetworks.REAP); 4794 } else { 4795 final NetworkAgentInfo[] nais = mNetworkAgentInfos.values().toArray( 4796 new NetworkAgentInfo[mNetworkAgentInfos.size()]); 4797 // Rematch higher scoring networks first to prevent requests first matching a lower 4798 // scoring network and then a higher scoring network, which could produce multiple 4799 // callbacks and inadvertently unlinger networks. 4800 Arrays.sort(nais); 4801 for (NetworkAgentInfo nai : nais) { 4802 rematchNetworkAndRequests(nai, 4803 // Only reap the last time through the loop. Reaping before all rematching 4804 // is complete could incorrectly teardown a network that hasn't yet been 4805 // rematched. 4806 (nai != nais[nais.length-1]) ? ReapUnvalidatedNetworks.DONT_REAP 4807 : ReapUnvalidatedNetworks.REAP); 4808 } 4809 } 4810 } 4811 4812 private void updateInetCondition(NetworkAgentInfo nai) { 4813 // Don't bother updating until we've graduated to validated at least once. 4814 if (!nai.everValidated) return; 4815 // For now only update icons for default connection. 4816 // TODO: Update WiFi and cellular icons separately. b/17237507 4817 if (!isDefaultNetwork(nai)) return; 4818 4819 int newInetCondition = nai.lastValidated ? 100 : 0; 4820 // Don't repeat publish. 4821 if (newInetCondition == mDefaultInetConditionPublished) return; 4822 4823 mDefaultInetConditionPublished = newInetCondition; 4824 sendInetConditionBroadcast(nai.networkInfo); 4825 } 4826 4827 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4828 if (mLockdownTracker != null) { 4829 if (nai != null && nai.isVPN()) { 4830 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4831 } else { 4832 mLockdownTracker.onNetworkInfoChanged(); 4833 } 4834 } 4835 } 4836 4837 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4838 NetworkInfo.State state = newInfo.getState(); 4839 NetworkInfo oldInfo = null; 4840 final int oldScore = networkAgent.getCurrentScore(); 4841 synchronized (networkAgent) { 4842 oldInfo = networkAgent.networkInfo; 4843 networkAgent.networkInfo = newInfo; 4844 } 4845 notifyLockdownVpn(networkAgent); 4846 4847 if (oldInfo != null && oldInfo.getState() == state) { 4848 if (oldInfo.isRoaming() != newInfo.isRoaming()) { 4849 if (VDBG) log("roaming status changed, notifying NetworkStatsService"); 4850 notifyIfacesChangedForNetworkStats(); 4851 } else if (VDBG) log("ignoring duplicate network state non-change"); 4852 // In either case, no further work should be needed. 4853 return; 4854 } 4855 if (DBG) { 4856 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4857 (oldInfo == null ? "null" : oldInfo.getState()) + 4858 " to " + state); 4859 } 4860 4861 if (!networkAgent.created 4862 && (state == NetworkInfo.State.CONNECTED 4863 || (state == NetworkInfo.State.CONNECTING && networkAgent.isVPN()))) { 4864 try { 4865 // This should never fail. Specifying an already in use NetID will cause failure. 4866 if (networkAgent.isVPN()) { 4867 mNetd.createVirtualNetwork(networkAgent.network.netId, 4868 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4869 (networkAgent.networkMisc == null || 4870 !networkAgent.networkMisc.allowBypass)); 4871 } else { 4872 mNetd.createPhysicalNetwork(networkAgent.network.netId, 4873 networkAgent.networkCapabilities.hasCapability( 4874 NET_CAPABILITY_NOT_RESTRICTED) ? 4875 null : NetworkManagementService.PERMISSION_SYSTEM); 4876 } 4877 } catch (Exception e) { 4878 loge("Error creating network " + networkAgent.network.netId + ": " 4879 + e.getMessage()); 4880 return; 4881 } 4882 networkAgent.created = true; 4883 } 4884 4885 if (!networkAgent.everConnected && state == NetworkInfo.State.CONNECTED) { 4886 networkAgent.everConnected = true; 4887 4888 updateLinkProperties(networkAgent, null); 4889 notifyIfacesChangedForNetworkStats(); 4890 4891 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4892 scheduleUnvalidatedPrompt(networkAgent); 4893 4894 if (networkAgent.isVPN()) { 4895 // Temporarily disable the default proxy (not global). 4896 synchronized (mProxyLock) { 4897 if (!mDefaultProxyDisabled) { 4898 mDefaultProxyDisabled = true; 4899 if (mGlobalProxy == null && mDefaultProxy != null) { 4900 sendProxyBroadcast(null); 4901 } 4902 } 4903 } 4904 // TODO: support proxy per network. 4905 } 4906 4907 // Whether a particular NetworkRequest listen should cause signal strength thresholds to 4908 // be communicated to a particular NetworkAgent depends only on the network's immutable, 4909 // capabilities, so it only needs to be done once on initial connect, not every time the 4910 // network's capabilities change. Note that we do this before rematching the network, 4911 // so we could decide to tear it down immediately afterwards. That's fine though - on 4912 // disconnection NetworkAgents should stop any signal strength monitoring they have been 4913 // doing. 4914 updateSignalStrengthThresholds(networkAgent, "CONNECT", null); 4915 4916 // Consider network even though it is not yet validated. 4917 rematchNetworkAndRequests(networkAgent, ReapUnvalidatedNetworks.REAP); 4918 4919 // This has to happen after matching the requests, because callbacks are just requests. 4920 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4921 } else if (state == NetworkInfo.State.DISCONNECTED) { 4922 networkAgent.asyncChannel.disconnect(); 4923 if (networkAgent.isVPN()) { 4924 synchronized (mProxyLock) { 4925 if (mDefaultProxyDisabled) { 4926 mDefaultProxyDisabled = false; 4927 if (mGlobalProxy == null && mDefaultProxy != null) { 4928 sendProxyBroadcast(mDefaultProxy); 4929 } 4930 } 4931 } 4932 } 4933 } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) || 4934 state == NetworkInfo.State.SUSPENDED) { 4935 // going into or coming out of SUSPEND: rescore and notify 4936 if (networkAgent.getCurrentScore() != oldScore) { 4937 rematchAllNetworksAndRequests(networkAgent, oldScore); 4938 } 4939 notifyNetworkCallbacks(networkAgent, (state == NetworkInfo.State.SUSPENDED ? 4940 ConnectivityManager.CALLBACK_SUSPENDED : 4941 ConnectivityManager.CALLBACK_RESUMED)); 4942 mLegacyTypeTracker.update(networkAgent); 4943 } 4944 } 4945 4946 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4947 if (VDBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4948 if (score < 0) { 4949 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4950 "). Bumping score to min of 0"); 4951 score = 0; 4952 } 4953 4954 final int oldScore = nai.getCurrentScore(); 4955 nai.setCurrentScore(score); 4956 4957 rematchAllNetworksAndRequests(nai, oldScore); 4958 4959 sendUpdatedScoreToFactories(nai); 4960 } 4961 4962 // notify only this one new request of the current state 4963 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4964 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4965 // TODO - read state from monitor to decide what to send. 4966// if (nai.networkMonitor.isLingering()) { 4967// notifyType = NetworkCallbacks.LOSING; 4968// } else if (nai.networkMonitor.isEvaluating()) { 4969// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4970// } 4971 if (nri.mPendingIntent == null) { 4972 callCallbackForRequest(nri, nai, notifyType); 4973 } else { 4974 sendPendingIntentForRequest(nri, nai, notifyType); 4975 } 4976 } 4977 4978 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, DetailedState state, int type) { 4979 // The NetworkInfo we actually send out has no bearing on the real 4980 // state of affairs. For example, if the default connection is mobile, 4981 // and a request for HIPRI has just gone away, we need to pretend that 4982 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4983 // the state to DISCONNECTED, even though the network is of type MOBILE 4984 // and is still connected. 4985 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4986 info.setType(type); 4987 if (state != DetailedState.DISCONNECTED) { 4988 info.setDetailedState(state, null, info.getExtraInfo()); 4989 sendConnectedBroadcast(info); 4990 } else { 4991 info.setDetailedState(state, info.getReason(), info.getExtraInfo()); 4992 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4993 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4994 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4995 if (info.isFailover()) { 4996 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4997 nai.networkInfo.setFailover(false); 4998 } 4999 if (info.getReason() != null) { 5000 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 5001 } 5002 if (info.getExtraInfo() != null) { 5003 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 5004 } 5005 NetworkAgentInfo newDefaultAgent = null; 5006 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 5007 newDefaultAgent = getDefaultNetwork(); 5008 if (newDefaultAgent != null) { 5009 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 5010 newDefaultAgent.networkInfo); 5011 } else { 5012 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 5013 } 5014 } 5015 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 5016 mDefaultInetConditionPublished); 5017 sendStickyBroadcast(intent); 5018 if (newDefaultAgent != null) { 5019 sendConnectedBroadcast(newDefaultAgent.networkInfo); 5020 } 5021 } 5022 } 5023 5024 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 5025 if (VDBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 5026 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 5027 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 5028 NetworkRequestInfo nri = mNetworkRequests.get(nr); 5029 if (VDBG) log(" sending notification for " + nr); 5030 if (nri.mPendingIntent == null) { 5031 callCallbackForRequest(nri, networkAgent, notifyType); 5032 } else { 5033 sendPendingIntentForRequest(nri, networkAgent, notifyType); 5034 } 5035 } 5036 } 5037 5038 private String notifyTypeToName(int notifyType) { 5039 switch (notifyType) { 5040 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 5041 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 5042 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 5043 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 5044 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 5045 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 5046 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 5047 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 5048 } 5049 return "UNKNOWN"; 5050 } 5051 5052 /** 5053 * Notify NetworkStatsService that the set of active ifaces has changed, or that one of the 5054 * properties tracked by NetworkStatsService on an active iface has changed. 5055 */ 5056 private void notifyIfacesChangedForNetworkStats() { 5057 try { 5058 mStatsService.forceUpdateIfaces(); 5059 } catch (Exception ignored) { 5060 } 5061 } 5062 5063 @Override 5064 public boolean addVpnAddress(String address, int prefixLength) { 5065 throwIfLockdownEnabled(); 5066 int user = UserHandle.getUserId(Binder.getCallingUid()); 5067 synchronized (mVpns) { 5068 return mVpns.get(user).addAddress(address, prefixLength); 5069 } 5070 } 5071 5072 @Override 5073 public boolean removeVpnAddress(String address, int prefixLength) { 5074 throwIfLockdownEnabled(); 5075 int user = UserHandle.getUserId(Binder.getCallingUid()); 5076 synchronized (mVpns) { 5077 return mVpns.get(user).removeAddress(address, prefixLength); 5078 } 5079 } 5080 5081 @Override 5082 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 5083 throwIfLockdownEnabled(); 5084 int user = UserHandle.getUserId(Binder.getCallingUid()); 5085 boolean success; 5086 synchronized (mVpns) { 5087 success = mVpns.get(user).setUnderlyingNetworks(networks); 5088 } 5089 if (success) { 5090 notifyIfacesChangedForNetworkStats(); 5091 } 5092 return success; 5093 } 5094 5095 @Override 5096 public String getCaptivePortalServerUrl() { 5097 return NetworkMonitor.getCaptivePortalServerUrl(mContext); 5098 } 5099 5100 @Override 5101 public void startNattKeepalive(Network network, int intervalSeconds, Messenger messenger, 5102 IBinder binder, String srcAddr, int srcPort, String dstAddr) { 5103 enforceKeepalivePermission(); 5104 mKeepaliveTracker.startNattKeepalive( 5105 getNetworkAgentInfoForNetwork(network), 5106 intervalSeconds, messenger, binder, 5107 srcAddr, srcPort, dstAddr, ConnectivityManager.PacketKeepalive.NATT_PORT); 5108 } 5109 5110 @Override 5111 public void stopKeepalive(Network network, int slot) { 5112 mHandler.sendMessage(mHandler.obtainMessage( 5113 NetworkAgent.CMD_STOP_PACKET_KEEPALIVE, slot, PacketKeepalive.SUCCESS, network)); 5114 } 5115 5116 @Override 5117 public void factoryReset() { 5118 enforceConnectivityInternalPermission(); 5119 5120 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 5121 return; 5122 } 5123 5124 final int userId = UserHandle.getCallingUserId(); 5125 5126 // Turn airplane mode off 5127 setAirplaneMode(false); 5128 5129 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 5130 // Untether 5131 for (String tether : getTetheredIfaces()) { 5132 untether(tether); 5133 } 5134 } 5135 5136 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 5137 // Turn VPN off 5138 VpnConfig vpnConfig = getVpnConfig(userId); 5139 if (vpnConfig != null) { 5140 if (vpnConfig.legacy) { 5141 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 5142 } else { 5143 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 5144 // in the future without user intervention. 5145 setVpnPackageAuthorization(vpnConfig.user, userId, false); 5146 5147 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 5148 } 5149 } 5150 } 5151 } 5152 5153 @VisibleForTesting 5154 public NetworkMonitor createNetworkMonitor(Context context, Handler handler, 5155 NetworkAgentInfo nai, NetworkRequest defaultRequest) { 5156 return new NetworkMonitor(context, handler, nai, defaultRequest); 5157 } 5158 5159 private static void logDefaultNetworkEvent(NetworkAgentInfo newNai, NetworkAgentInfo prevNai) { 5160 int newNetid = NETID_UNSET; 5161 int prevNetid = NETID_UNSET; 5162 int[] transports = new int[0]; 5163 boolean hadIPv4 = false; 5164 boolean hadIPv6 = false; 5165 5166 if (newNai != null) { 5167 newNetid = newNai.network.netId; 5168 transports = newNai.networkCapabilities.getTransportTypes(); 5169 } 5170 if (prevNai != null) { 5171 prevNetid = prevNai.network.netId; 5172 final LinkProperties lp = prevNai.linkProperties; 5173 hadIPv4 = lp.hasIPv4Address() && lp.hasIPv4DefaultRoute(); 5174 hadIPv6 = lp.hasGlobalIPv6Address() && lp.hasIPv6DefaultRoute(); 5175 } 5176 5177 DefaultNetworkEvent.logEvent(newNetid, transports, prevNetid, hadIPv4, hadIPv6); 5178 } 5179} 5180