ConnectivityService.java revision 186602842db6f8e1e69f10b2524e19df67c6a9b9
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.IpConnectivityLog; 80import android.net.metrics.NetworkEvent; 81import android.os.Binder; 82import android.os.Build; 83import android.os.Bundle; 84import android.os.FileUtils; 85import android.os.Handler; 86import android.os.HandlerThread; 87import android.os.IBinder; 88import android.os.INetworkManagementService; 89import android.os.Looper; 90import android.os.Message; 91import android.os.Messenger; 92import android.os.ParcelFileDescriptor; 93import android.os.PowerManager; 94import android.os.Process; 95import android.os.RemoteException; 96import android.os.ResultReceiver; 97import android.os.SystemProperties; 98import android.os.UserHandle; 99import android.os.UserManager; 100import android.provider.Settings; 101import android.security.Credentials; 102import android.security.KeyStore; 103import android.telephony.TelephonyManager; 104import android.text.TextUtils; 105import android.util.ArraySet; 106import android.util.LocalLog; 107import android.util.LocalLog.ReadOnlyLocalLog; 108import android.util.Log; 109import android.util.Pair; 110import android.util.Slog; 111import android.util.SparseArray; 112import android.util.SparseBooleanArray; 113import android.util.SparseIntArray; 114import android.util.Xml; 115 116import com.android.internal.R; 117import com.android.internal.annotations.GuardedBy; 118import com.android.internal.annotations.VisibleForTesting; 119import com.android.internal.app.IBatteryStats; 120import com.android.internal.net.LegacyVpnInfo; 121import com.android.internal.net.NetworkStatsFactory; 122import com.android.internal.net.VpnConfig; 123import com.android.internal.net.VpnInfo; 124import com.android.internal.net.VpnProfile; 125import com.android.internal.util.AsyncChannel; 126import com.android.internal.util.IndentingPrintWriter; 127import com.android.internal.util.MessageUtils; 128import com.android.internal.util.XmlUtils; 129import com.android.server.am.BatteryStatsService; 130import com.android.server.connectivity.DataConnectionStats; 131import com.android.server.connectivity.KeepaliveTracker; 132import com.android.server.connectivity.Nat464Xlat; 133import com.android.server.connectivity.NetworkAgentInfo; 134import com.android.server.connectivity.NetworkDiagnostics; 135import com.android.server.connectivity.NetworkMonitor; 136import com.android.server.connectivity.PacManager; 137import com.android.server.connectivity.PermissionMonitor; 138import com.android.server.connectivity.Tethering; 139import com.android.server.connectivity.Vpn; 140import com.android.server.net.BaseNetworkObserver; 141import com.android.server.net.LockdownVpnTracker; 142 143import com.google.android.collect.Lists; 144 145import org.xmlpull.v1.XmlPullParser; 146import org.xmlpull.v1.XmlPullParserException; 147 148import java.io.File; 149import java.io.FileDescriptor; 150import java.io.FileNotFoundException; 151import java.io.FileReader; 152import java.io.IOException; 153import java.io.PrintWriter; 154import java.net.Inet4Address; 155import java.net.InetAddress; 156import java.net.UnknownHostException; 157import java.util.ArrayDeque; 158import java.util.ArrayList; 159import java.util.Arrays; 160import java.util.Collection; 161import java.util.HashMap; 162import java.util.HashSet; 163import java.util.List; 164import java.util.Map; 165import java.util.Objects; 166import java.util.SortedSet; 167import java.util.TreeSet; 168 169/** 170 * @hide 171 */ 172public class ConnectivityService extends IConnectivityManager.Stub 173 implements PendingIntent.OnFinished { 174 private static final String TAG = "ConnectivityService"; 175 176 private static final boolean DBG = true; 177 private static final boolean VDBG = false; 178 179 private static final boolean LOGD_RULES = false; 180 private static final boolean LOGD_BLOCKED_NETWORKINFO = true; 181 182 // TODO: create better separation between radio types and network types 183 184 // how long to wait before switching back to a radio's default network 185 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 186 // system property that can override the above value 187 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 188 "android.telephony.apn-restore"; 189 190 // How long to wait before putting up a "This network doesn't have an Internet connection, 191 // connect anyway?" dialog after the user selects a network that doesn't validate. 192 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 193 194 // How long to delay to removal of a pending intent based request. 195 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 196 private final int mReleasePendingIntentDelayMs; 197 198 private Tethering mTethering; 199 200 private final PermissionMonitor mPermissionMonitor; 201 202 private KeyStore mKeyStore; 203 204 @GuardedBy("mVpns") 205 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 206 207 private boolean mLockdownEnabled; 208 private LockdownVpnTracker mLockdownTracker; 209 210 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 211 private Object mRulesLock = new Object(); 212 /** Currently active network rules by UID. */ 213 @GuardedBy("mRulesLock") 214 private SparseIntArray mUidRules = new SparseIntArray(); 215 /** Set of ifaces that are costly. */ 216 @GuardedBy("mRulesLock") 217 private ArraySet<String> mMeteredIfaces = new ArraySet<>(); 218 /** Flag indicating if background data is restricted. */ 219 @GuardedBy("mRulesLock") 220 private boolean mRestrictBackground; 221 222 final private Context mContext; 223 private int mNetworkPreference; 224 // 0 is full bad, 100 is full good 225 private int mDefaultInetConditionPublished = 0; 226 227 private int mNumDnsEntries; 228 229 private boolean mTestMode; 230 private static ConnectivityService sServiceInstance; 231 232 private INetworkManagementService mNetd; 233 private INetworkStatsService mStatsService; 234 private INetworkPolicyManager mPolicyManager; 235 236 private String mCurrentTcpBufferSizes; 237 238 private static final int ENABLED = 1; 239 private static final int DISABLED = 0; 240 241 private static final SparseArray<String> sMagicDecoderRing = MessageUtils.findMessageNames( 242 new Class[] { AsyncChannel.class, ConnectivityService.class, NetworkAgent.class }); 243 244 private enum ReapUnvalidatedNetworks { 245 // Tear down networks that have no chance (e.g. even if validated) of becoming 246 // the highest scoring network satisfying a NetworkRequest. This should be passed when 247 // all networks have been rematched against all NetworkRequests. 248 REAP, 249 // Don't reap networks. This should be passed when some networks have not yet been 250 // rematched against all NetworkRequests. 251 DONT_REAP 252 }; 253 254 /** 255 * used internally to change our mobile data enabled flag 256 */ 257 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 258 259 /** 260 * used internally to clear a wakelock when transitioning 261 * from one net to another. Clear happens when we get a new 262 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 263 * after a timeout if no network is found (typically 1 min). 264 */ 265 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 266 267 /** 268 * used internally to reload global proxy settings 269 */ 270 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 271 272 /** 273 * PAC manager has received new port. 274 */ 275 private static final int EVENT_PROXY_HAS_CHANGED = 16; 276 277 /** 278 * used internally when registering NetworkFactories 279 * obj = NetworkFactoryInfo 280 */ 281 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 282 283 /** 284 * used internally when registering NetworkAgents 285 * obj = Messenger 286 */ 287 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 288 289 /** 290 * used to add a network request 291 * includes a NetworkRequestInfo 292 */ 293 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 294 295 /** 296 * indicates a timeout period is over - check if we had a network yet or not 297 * and if not, call the timeout calback (but leave the request live until they 298 * cancel it. 299 * includes a NetworkRequestInfo 300 */ 301 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 302 303 /** 304 * used to add a network listener - no request 305 * includes a NetworkRequestInfo 306 */ 307 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 308 309 /** 310 * used to remove a network request, either a listener or a real request 311 * arg1 = UID of caller 312 * obj = NetworkRequest 313 */ 314 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 315 316 /** 317 * used internally when registering NetworkFactories 318 * obj = Messenger 319 */ 320 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 321 322 /** 323 * used internally to expire a wakelock when transitioning 324 * from one net to another. Expire happens when we fail to find 325 * a new network (typically after 1 minute) - 326 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 327 * a replacement network. 328 */ 329 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 330 331 /** 332 * Used internally to indicate the system is ready. 333 */ 334 private static final int EVENT_SYSTEM_READY = 25; 335 336 /** 337 * used to add a network request with a pending intent 338 * obj = NetworkRequestInfo 339 */ 340 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 341 342 /** 343 * used to remove a pending intent and its associated network request. 344 * arg1 = UID of caller 345 * obj = PendingIntent 346 */ 347 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 348 349 /** 350 * used to specify whether a network should be used even if unvalidated. 351 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 352 * arg2 = whether to remember this choice in the future (1 or 0) 353 * obj = network 354 */ 355 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 356 357 /** 358 * used to ask the user to confirm a connection to an unvalidated network. 359 * obj = network 360 */ 361 private static final int EVENT_PROMPT_UNVALIDATED = 29; 362 363 /** 364 * used internally to (re)configure mobile data always-on settings. 365 */ 366 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 367 368 /** 369 * used to add a network listener with a pending intent 370 * obj = NetworkRequestInfo 371 */ 372 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 373 374 /** Handler thread used for both of the handlers below. */ 375 @VisibleForTesting 376 protected final HandlerThread mHandlerThread; 377 /** Handler used for internal events. */ 378 final private InternalHandler mHandler; 379 /** Handler used for incoming {@link NetworkStateTracker} events. */ 380 final private NetworkStateTrackerHandler mTrackerHandler; 381 382 private boolean mSystemReady; 383 private Intent mInitialBroadcast; 384 385 private PowerManager.WakeLock mNetTransitionWakeLock; 386 private String mNetTransitionWakeLockCausedBy = ""; 387 private int mNetTransitionWakeLockSerialNumber; 388 private int mNetTransitionWakeLockTimeout; 389 private final PowerManager.WakeLock mPendingIntentWakeLock; 390 391 // used in DBG mode to track inet condition reports 392 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 393 private ArrayList mInetLog; 394 395 // track the current default http proxy - tell the world if we get a new one (real change) 396 private volatile ProxyInfo mDefaultProxy = null; 397 private Object mProxyLock = new Object(); 398 private boolean mDefaultProxyDisabled = false; 399 400 // track the global proxy. 401 private ProxyInfo mGlobalProxy = null; 402 403 private PacManager mPacManager = null; 404 405 final private SettingsObserver mSettingsObserver; 406 407 private UserManager mUserManager; 408 409 NetworkConfig[] mNetConfigs; 410 int mNetworksDefined; 411 412 // the set of network types that can only be enabled by system/sig apps 413 List mProtectedNetworks; 414 415 private DataConnectionStats mDataConnectionStats; 416 417 TelephonyManager mTelephonyManager; 418 419 private KeepaliveTracker mKeepaliveTracker; 420 421 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 422 private final static int MIN_NET_ID = 100; // some reserved marks 423 private final static int MAX_NET_ID = 65535; 424 private int mNextNetId = MIN_NET_ID; 425 426 // sequence number of NetworkRequests 427 private int mNextNetworkRequestId = 1; 428 429 // NetworkRequest activity String log entries. 430 private static final int MAX_NETWORK_REQUEST_LOGS = 20; 431 private final LocalLog mNetworkRequestInfoLogs = new LocalLog(MAX_NETWORK_REQUEST_LOGS); 432 433 // Array of <Network,ReadOnlyLocalLogs> tracking network validation and results 434 private static final int MAX_VALIDATION_LOGS = 10; 435 private static class ValidationLog { 436 final Network mNetwork; 437 final String mNetworkExtraInfo; 438 final ReadOnlyLocalLog mLog; 439 440 ValidationLog(Network network, String networkExtraInfo, ReadOnlyLocalLog log) { 441 mNetwork = network; 442 mNetworkExtraInfo = networkExtraInfo; 443 mLog = log; 444 } 445 } 446 private final ArrayDeque<ValidationLog> mValidationLogs = 447 new ArrayDeque<ValidationLog>(MAX_VALIDATION_LOGS); 448 449 private void addValidationLogs(ReadOnlyLocalLog log, Network network, String networkExtraInfo) { 450 synchronized(mValidationLogs) { 451 while (mValidationLogs.size() >= MAX_VALIDATION_LOGS) { 452 mValidationLogs.removeLast(); 453 } 454 mValidationLogs.addFirst(new ValidationLog(network, networkExtraInfo, log)); 455 } 456 } 457 458 private final IpConnectivityLog mMetricsLog = new IpConnectivityLog(); 459 460 /** 461 * Implements support for the legacy "one network per network type" model. 462 * 463 * We used to have a static array of NetworkStateTrackers, one for each 464 * network type, but that doesn't work any more now that we can have, 465 * for example, more that one wifi network. This class stores all the 466 * NetworkAgentInfo objects that support a given type, but the legacy 467 * API will only see the first one. 468 * 469 * It serves two main purposes: 470 * 471 * 1. Provide information about "the network for a given type" (since this 472 * API only supports one). 473 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 474 * the first network for a given type changes, or if the default network 475 * changes. 476 */ 477 private class LegacyTypeTracker { 478 479 private static final boolean DBG = true; 480 private static final boolean VDBG = false; 481 482 /** 483 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 484 * Each list holds references to all NetworkAgentInfos that are used to 485 * satisfy requests for that network type. 486 * 487 * This array is built out at startup such that an unsupported network 488 * doesn't get an ArrayList instance, making this a tristate: 489 * unsupported, supported but not active and active. 490 * 491 * The actual lists are populated when we scan the network types that 492 * are supported on this device. 493 * 494 * Threading model: 495 * - addSupportedType() is only called in the constructor 496 * - add(), update(), remove() are only called from the ConnectivityService handler thread. 497 * They are therefore not thread-safe with respect to each other. 498 * - getNetworkForType() can be called at any time on binder threads. It is synchronized 499 * on mTypeLists to be thread-safe with respect to a concurrent remove call. 500 * - dump is thread-safe with respect to concurrent add and remove calls. 501 */ 502 private final ArrayList<NetworkAgentInfo> mTypeLists[]; 503 504 public LegacyTypeTracker() { 505 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 506 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 507 } 508 509 public void addSupportedType(int type) { 510 if (mTypeLists[type] != null) { 511 throw new IllegalStateException( 512 "legacy list for type " + type + "already initialized"); 513 } 514 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 515 } 516 517 public boolean isTypeSupported(int type) { 518 return isNetworkTypeValid(type) && mTypeLists[type] != null; 519 } 520 521 public NetworkAgentInfo getNetworkForType(int type) { 522 synchronized (mTypeLists) { 523 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 524 return mTypeLists[type].get(0); 525 } 526 } 527 return null; 528 } 529 530 private void maybeLogBroadcast(NetworkAgentInfo nai, DetailedState state, int type, 531 boolean isDefaultNetwork) { 532 if (DBG) { 533 log("Sending " + state + 534 " broadcast for type " + type + " " + nai.name() + 535 " isDefaultNetwork=" + isDefaultNetwork); 536 } 537 } 538 539 /** Adds the given network to the specified legacy type list. */ 540 public void add(int type, NetworkAgentInfo nai) { 541 if (!isTypeSupported(type)) { 542 return; // Invalid network type. 543 } 544 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 545 546 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 547 if (list.contains(nai)) { 548 return; 549 } 550 synchronized (mTypeLists) { 551 list.add(nai); 552 } 553 554 // Send a broadcast if this is the first network of its type or if it's the default. 555 final boolean isDefaultNetwork = isDefaultNetwork(nai); 556 if ((list.size() == 1) || isDefaultNetwork) { 557 maybeLogBroadcast(nai, DetailedState.CONNECTED, type, isDefaultNetwork); 558 sendLegacyNetworkBroadcast(nai, DetailedState.CONNECTED, type); 559 } 560 } 561 562 /** Removes the given network from the specified legacy type list. */ 563 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 564 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 565 if (list == null || list.isEmpty()) { 566 return; 567 } 568 final boolean wasFirstNetwork = list.get(0).equals(nai); 569 570 synchronized (mTypeLists) { 571 if (!list.remove(nai)) { 572 return; 573 } 574 } 575 576 final DetailedState state = DetailedState.DISCONNECTED; 577 578 if (wasFirstNetwork || wasDefault) { 579 maybeLogBroadcast(nai, state, type, wasDefault); 580 sendLegacyNetworkBroadcast(nai, state, type); 581 } 582 583 if (!list.isEmpty() && wasFirstNetwork) { 584 if (DBG) log("Other network available for type " + type + 585 ", sending connected broadcast"); 586 final NetworkAgentInfo replacement = list.get(0); 587 maybeLogBroadcast(replacement, state, type, isDefaultNetwork(replacement)); 588 sendLegacyNetworkBroadcast(replacement, state, type); 589 } 590 } 591 592 /** Removes the given network from all legacy type lists. */ 593 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 594 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 595 for (int type = 0; type < mTypeLists.length; type++) { 596 remove(type, nai, wasDefault); 597 } 598 } 599 600 // send out another legacy broadcast - currently only used for suspend/unsuspend 601 // toggle 602 public void update(NetworkAgentInfo nai) { 603 final boolean isDefault = isDefaultNetwork(nai); 604 final DetailedState state = nai.networkInfo.getDetailedState(); 605 for (int type = 0; type < mTypeLists.length; type++) { 606 final ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 607 final boolean contains = (list != null && list.contains(nai)); 608 final boolean isFirst = contains && (nai == list.get(0)); 609 if (isFirst || contains && isDefault) { 610 maybeLogBroadcast(nai, state, type, isDefault); 611 sendLegacyNetworkBroadcast(nai, state, type); 612 } 613 } 614 } 615 616 private String naiToString(NetworkAgentInfo nai) { 617 String name = (nai != null) ? nai.name() : "null"; 618 String state = (nai.networkInfo != null) ? 619 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 620 "???/???"; 621 return name + " " + state; 622 } 623 624 public void dump(IndentingPrintWriter pw) { 625 pw.println("mLegacyTypeTracker:"); 626 pw.increaseIndent(); 627 pw.print("Supported types:"); 628 for (int type = 0; type < mTypeLists.length; type++) { 629 if (mTypeLists[type] != null) pw.print(" " + type); 630 } 631 pw.println(); 632 pw.println("Current state:"); 633 pw.increaseIndent(); 634 synchronized (mTypeLists) { 635 for (int type = 0; type < mTypeLists.length; type++) { 636 if (mTypeLists[type] == null || mTypeLists[type].isEmpty()) continue; 637 for (NetworkAgentInfo nai : mTypeLists[type]) { 638 pw.println(type + " " + naiToString(nai)); 639 } 640 } 641 } 642 pw.decreaseIndent(); 643 pw.decreaseIndent(); 644 pw.println(); 645 } 646 } 647 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 648 649 @VisibleForTesting 650 protected HandlerThread createHandlerThread() { 651 return new HandlerThread("ConnectivityServiceThread"); 652 } 653 654 public ConnectivityService(Context context, INetworkManagementService netManager, 655 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 656 if (DBG) log("ConnectivityService starting up"); 657 658 mDefaultRequest = createInternetRequestForTransport(-1); 659 NetworkRequestInfo defaultNRI = new NetworkRequestInfo(null, mDefaultRequest, new Binder()); 660 mNetworkRequests.put(mDefaultRequest, defaultNRI); 661 mNetworkRequestInfoLogs.log("REGISTER " + defaultNRI); 662 663 mDefaultMobileDataRequest = createInternetRequestForTransport( 664 NetworkCapabilities.TRANSPORT_CELLULAR); 665 666 mHandlerThread = createHandlerThread(); 667 mHandlerThread.start(); 668 mHandler = new InternalHandler(mHandlerThread.getLooper()); 669 mTrackerHandler = new NetworkStateTrackerHandler(mHandlerThread.getLooper()); 670 671 // setup our unique device name 672 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 673 String id = Settings.Secure.getString(context.getContentResolver(), 674 Settings.Secure.ANDROID_ID); 675 if (id != null && id.length() > 0) { 676 String name = new String("android-").concat(id); 677 SystemProperties.set("net.hostname", name); 678 } 679 } 680 681 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 682 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 683 684 mContext = checkNotNull(context, "missing Context"); 685 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 686 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 687 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 688 mKeyStore = KeyStore.getInstance(); 689 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 690 691 try { 692 mPolicyManager.setConnectivityListener(mPolicyListener); 693 mRestrictBackground = mPolicyManager.getRestrictBackground(); 694 } catch (RemoteException e) { 695 // ouch, no rules updates means some processes may never get network 696 loge("unable to register INetworkPolicyListener" + e); 697 } 698 699 final PowerManager powerManager = (PowerManager) context.getSystemService( 700 Context.POWER_SERVICE); 701 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 702 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 703 com.android.internal.R.integer.config_networkTransitionTimeout); 704 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 705 706 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 707 708 // TODO: What is the "correct" way to do determine if this is a wifi only device? 709 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 710 log("wifiOnly=" + wifiOnly); 711 String[] naStrings = context.getResources().getStringArray( 712 com.android.internal.R.array.networkAttributes); 713 for (String naString : naStrings) { 714 try { 715 NetworkConfig n = new NetworkConfig(naString); 716 if (VDBG) log("naString=" + naString + " config=" + n); 717 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 718 loge("Error in networkAttributes - ignoring attempt to define type " + 719 n.type); 720 continue; 721 } 722 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 723 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 724 n.type); 725 continue; 726 } 727 if (mNetConfigs[n.type] != null) { 728 loge("Error in networkAttributes - ignoring attempt to redefine type " + 729 n.type); 730 continue; 731 } 732 mLegacyTypeTracker.addSupportedType(n.type); 733 734 mNetConfigs[n.type] = n; 735 mNetworksDefined++; 736 } catch(Exception e) { 737 // ignore it - leave the entry null 738 } 739 } 740 741 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 742 if (mNetConfigs[TYPE_VPN] == null) { 743 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 744 // don't need to add TYPE_VPN to mNetConfigs. 745 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 746 mNetworksDefined++; // used only in the log() statement below. 747 } 748 749 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 750 751 mProtectedNetworks = new ArrayList<Integer>(); 752 int[] protectedNetworks = context.getResources().getIntArray( 753 com.android.internal.R.array.config_protectedNetworks); 754 for (int p : protectedNetworks) { 755 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 756 mProtectedNetworks.add(p); 757 } else { 758 if (DBG) loge("Ignoring protectedNetwork " + p); 759 } 760 } 761 762 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 763 && SystemProperties.get("ro.build.type").equals("eng"); 764 765 mTethering = new Tethering(mContext, mNetd, statsService); 766 767 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 768 769 //set up the listener for user state for creating user VPNs 770 IntentFilter intentFilter = new IntentFilter(); 771 intentFilter.addAction(Intent.ACTION_USER_STARTED); 772 intentFilter.addAction(Intent.ACTION_USER_STOPPED); 773 intentFilter.addAction(Intent.ACTION_USER_ADDED); 774 intentFilter.addAction(Intent.ACTION_USER_REMOVED); 775 intentFilter.addAction(Intent.ACTION_USER_UNLOCKED); 776 mContext.registerReceiverAsUser( 777 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 778 779 try { 780 mNetd.registerObserver(mTethering); 781 mNetd.registerObserver(mDataActivityObserver); 782 } catch (RemoteException e) { 783 loge("Error registering observer :" + e); 784 } 785 786 if (DBG) { 787 mInetLog = new ArrayList(); 788 } 789 790 mSettingsObserver = new SettingsObserver(mContext, mHandler); 791 registerSettingsCallbacks(); 792 793 mDataConnectionStats = new DataConnectionStats(mContext); 794 mDataConnectionStats.startMonitoring(); 795 796 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 797 798 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 799 800 mKeepaliveTracker = new KeepaliveTracker(mHandler); 801 } 802 803 private NetworkRequest createInternetRequestForTransport(int transportType) { 804 NetworkCapabilities netCap = new NetworkCapabilities(); 805 netCap.addCapability(NET_CAPABILITY_INTERNET); 806 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 807 if (transportType > -1) { 808 netCap.addTransportType(transportType); 809 } 810 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId(), 811 NetworkRequest.Type.REQUEST); 812 } 813 814 // Used only for testing. 815 // TODO: Delete this and either: 816 // 1. Give Fake SettingsProvider the ability to send settings change notifications (requires 817 // changing ContentResolver to make registerContentObserver non-final). 818 // 2. Give FakeSettingsProvider an alternative notification mechanism and have the test use it 819 // by subclassing SettingsObserver. 820 @VisibleForTesting 821 void updateMobileDataAlwaysOn() { 822 mHandler.sendEmptyMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 823 } 824 825 private void handleMobileDataAlwaysOn() { 826 final boolean enable = (Settings.Global.getInt( 827 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 828 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 829 if (enable == isEnabled) { 830 return; // Nothing to do. 831 } 832 833 if (enable) { 834 handleRegisterNetworkRequest(new NetworkRequestInfo( 835 null, mDefaultMobileDataRequest, new Binder())); 836 } else { 837 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 838 } 839 } 840 841 private void registerSettingsCallbacks() { 842 // Watch for global HTTP proxy changes. 843 mSettingsObserver.observe( 844 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 845 EVENT_APPLY_GLOBAL_HTTP_PROXY); 846 847 // Watch for whether or not to keep mobile data always on. 848 mSettingsObserver.observe( 849 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 850 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 851 } 852 853 private synchronized int nextNetworkRequestId() { 854 return mNextNetworkRequestId++; 855 } 856 857 @VisibleForTesting 858 protected int reserveNetId() { 859 synchronized (mNetworkForNetId) { 860 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 861 int netId = mNextNetId; 862 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 863 // Make sure NetID unused. http://b/16815182 864 if (!mNetIdInUse.get(netId)) { 865 mNetIdInUse.put(netId, true); 866 return netId; 867 } 868 } 869 } 870 throw new IllegalStateException("No free netIds"); 871 } 872 873 private NetworkState getFilteredNetworkState(int networkType, int uid, boolean ignoreBlocked) { 874 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 875 final NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 876 final NetworkState state; 877 if (nai != null) { 878 state = nai.getNetworkState(); 879 state.networkInfo.setType(networkType); 880 } else { 881 final NetworkInfo info = new NetworkInfo(networkType, 0, 882 getNetworkTypeName(networkType), ""); 883 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 884 info.setIsAvailable(true); 885 state = new NetworkState(info, new LinkProperties(), new NetworkCapabilities(), 886 null, null, null); 887 } 888 filterNetworkStateForUid(state, uid, ignoreBlocked); 889 return state; 890 } else { 891 return NetworkState.EMPTY; 892 } 893 } 894 895 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 896 if (network == null) { 897 return null; 898 } 899 synchronized (mNetworkForNetId) { 900 return mNetworkForNetId.get(network.netId); 901 } 902 } 903 904 private Network[] getVpnUnderlyingNetworks(int uid) { 905 if (!mLockdownEnabled) { 906 int user = UserHandle.getUserId(uid); 907 synchronized (mVpns) { 908 Vpn vpn = mVpns.get(user); 909 if (vpn != null && vpn.appliesToUid(uid)) { 910 return vpn.getUnderlyingNetworks(); 911 } 912 } 913 } 914 return null; 915 } 916 917 private NetworkState getUnfilteredActiveNetworkState(int uid) { 918 NetworkAgentInfo nai = getDefaultNetwork(); 919 920 final Network[] networks = getVpnUnderlyingNetworks(uid); 921 if (networks != null) { 922 // getUnderlyingNetworks() returns: 923 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 924 // empty array => the VPN explicitly said "no default network". 925 // non-empty array => the VPN specified one or more default networks; we use the 926 // first one. 927 if (networks.length > 0) { 928 nai = getNetworkAgentInfoForNetwork(networks[0]); 929 } else { 930 nai = null; 931 } 932 } 933 934 if (nai != null) { 935 return nai.getNetworkState(); 936 } else { 937 return NetworkState.EMPTY; 938 } 939 } 940 941 /** 942 * Check if UID should be blocked from using the network with the given LinkProperties. 943 */ 944 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid, 945 boolean ignoreBlocked) { 946 // Networks aren't blocked when ignoring blocked status 947 if (ignoreBlocked) return false; 948 // Networks are never blocked for system services 949 if (isSystem(uid)) return false; 950 951 final boolean networkMetered; 952 final int uidRules; 953 954 synchronized (mVpns) { 955 final Vpn vpn = mVpns.get(UserHandle.getUserId(uid)); 956 if (vpn != null && vpn.isBlockingUid(uid)) { 957 return true; 958 } 959 } 960 961 final String iface = (lp == null ? "" : lp.getInterfaceName()); 962 synchronized (mRulesLock) { 963 networkMetered = mMeteredIfaces.contains(iface); 964 uidRules = mUidRules.get(uid, RULE_NONE); 965 } 966 967 boolean allowed = true; 968 // Check Data Saver Mode first... 969 if (networkMetered) { 970 if ((uidRules & RULE_REJECT_METERED) != 0) { 971 if (LOGD_RULES) Log.d(TAG, "uid " + uid + " is blacklisted"); 972 // Explicitly blacklisted. 973 allowed = false; 974 } else { 975 allowed = !mRestrictBackground 976 || (uidRules & RULE_ALLOW_METERED) != 0 977 || (uidRules & RULE_TEMPORARY_ALLOW_METERED) != 0; 978 if (LOGD_RULES) Log.d(TAG, "allowed status for uid " + uid + " when" 979 + " mRestrictBackground=" + mRestrictBackground 980 + ", whitelisted=" + ((uidRules & RULE_ALLOW_METERED) != 0) 981 + ", tempWhitelist= + ((uidRules & RULE_TEMPORARY_ALLOW_METERED) != 0)" 982 + ": " + allowed); 983 } 984 } 985 // ...then power restrictions. 986 if (allowed) { 987 allowed = (uidRules & RULE_REJECT_ALL) == 0; 988 if (LOGD_RULES) Log.d(TAG, "allowed status for uid " + uid + " when" 989 + " rule is " + uidRulesToString(uidRules) + ": " + allowed); 990 } 991 return !allowed; 992 } 993 994 private void maybeLogBlockedNetworkInfo(NetworkInfo ni, int uid) { 995 if (ni == null || !LOGD_BLOCKED_NETWORKINFO) return; 996 boolean removed = false; 997 boolean added = false; 998 synchronized (mBlockedAppUids) { 999 if (ni.getDetailedState() == DetailedState.BLOCKED && mBlockedAppUids.add(uid)) { 1000 added = true; 1001 } else if (ni.isConnected() && mBlockedAppUids.remove(uid)) { 1002 removed = true; 1003 } 1004 } 1005 if (added) log("Returning blocked NetworkInfo to uid=" + uid); 1006 else if (removed) log("Returning unblocked NetworkInfo to uid=" + uid); 1007 } 1008 1009 /** 1010 * Apply any relevant filters to {@link NetworkState} for the given UID. For 1011 * example, this may mark the network as {@link DetailedState#BLOCKED} based 1012 * on {@link #isNetworkWithLinkPropertiesBlocked}, or 1013 * {@link NetworkInfo#isMetered()} based on network policies. 1014 */ 1015 private void filterNetworkStateForUid(NetworkState state, int uid, boolean ignoreBlocked) { 1016 if (state == null || state.networkInfo == null || state.linkProperties == null) return; 1017 1018 if (isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid, ignoreBlocked)) { 1019 state.networkInfo.setDetailedState(DetailedState.BLOCKED, null, null); 1020 } 1021 if (mLockdownTracker != null) { 1022 mLockdownTracker.augmentNetworkInfo(state.networkInfo); 1023 } 1024 1025 // TODO: apply metered state closer to NetworkAgentInfo 1026 final long token = Binder.clearCallingIdentity(); 1027 try { 1028 state.networkInfo.setMetered(mPolicyManager.isNetworkMetered(state)); 1029 } catch (RemoteException e) { 1030 } finally { 1031 Binder.restoreCallingIdentity(token); 1032 } 1033 } 1034 1035 /** 1036 * Return NetworkInfo for the active (i.e., connected) network interface. 1037 * It is assumed that at most one network is active at a time. If more 1038 * than one is active, it is indeterminate which will be returned. 1039 * @return the info for the active network, or {@code null} if none is 1040 * active 1041 */ 1042 @Override 1043 public NetworkInfo getActiveNetworkInfo() { 1044 enforceAccessPermission(); 1045 final int uid = Binder.getCallingUid(); 1046 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1047 filterNetworkStateForUid(state, uid, false); 1048 maybeLogBlockedNetworkInfo(state.networkInfo, uid); 1049 return state.networkInfo; 1050 } 1051 1052 @Override 1053 public Network getActiveNetwork() { 1054 enforceAccessPermission(); 1055 return getActiveNetworkForUidInternal(Binder.getCallingUid(), false); 1056 } 1057 1058 @Override 1059 public Network getActiveNetworkForUid(int uid, boolean ignoreBlocked) { 1060 enforceConnectivityInternalPermission(); 1061 return getActiveNetworkForUidInternal(uid, ignoreBlocked); 1062 } 1063 1064 private Network getActiveNetworkForUidInternal(final int uid, boolean ignoreBlocked) { 1065 final int user = UserHandle.getUserId(uid); 1066 int vpnNetId = NETID_UNSET; 1067 synchronized (mVpns) { 1068 final Vpn vpn = mVpns.get(user); 1069 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 1070 } 1071 NetworkAgentInfo nai; 1072 if (vpnNetId != NETID_UNSET) { 1073 synchronized (mNetworkForNetId) { 1074 nai = mNetworkForNetId.get(vpnNetId); 1075 } 1076 if (nai != null) return nai.network; 1077 } 1078 nai = getDefaultNetwork(); 1079 if (nai != null 1080 && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid, ignoreBlocked)) { 1081 nai = null; 1082 } 1083 return nai != null ? nai.network : null; 1084 } 1085 1086 // Public because it's used by mLockdownTracker. 1087 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1088 enforceAccessPermission(); 1089 final int uid = Binder.getCallingUid(); 1090 NetworkState state = getUnfilteredActiveNetworkState(uid); 1091 return state.networkInfo; 1092 } 1093 1094 @Override 1095 public NetworkInfo getActiveNetworkInfoForUid(int uid, boolean ignoreBlocked) { 1096 enforceConnectivityInternalPermission(); 1097 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1098 filterNetworkStateForUid(state, uid, ignoreBlocked); 1099 return state.networkInfo; 1100 } 1101 1102 @Override 1103 public NetworkInfo getNetworkInfo(int networkType) { 1104 enforceAccessPermission(); 1105 final int uid = Binder.getCallingUid(); 1106 if (getVpnUnderlyingNetworks(uid) != null) { 1107 // A VPN is active, so we may need to return one of its underlying networks. This 1108 // information is not available in LegacyTypeTracker, so we have to get it from 1109 // getUnfilteredActiveNetworkState. 1110 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1111 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1112 filterNetworkStateForUid(state, uid, false); 1113 return state.networkInfo; 1114 } 1115 } 1116 final NetworkState state = getFilteredNetworkState(networkType, uid, false); 1117 return state.networkInfo; 1118 } 1119 1120 @Override 1121 public NetworkInfo getNetworkInfoForUid(Network network, int uid, boolean ignoreBlocked) { 1122 enforceAccessPermission(); 1123 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1124 if (nai != null) { 1125 final NetworkState state = nai.getNetworkState(); 1126 filterNetworkStateForUid(state, uid, ignoreBlocked); 1127 return state.networkInfo; 1128 } else { 1129 return null; 1130 } 1131 } 1132 1133 @Override 1134 public NetworkInfo[] getAllNetworkInfo() { 1135 enforceAccessPermission(); 1136 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1137 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1138 networkType++) { 1139 NetworkInfo info = getNetworkInfo(networkType); 1140 if (info != null) { 1141 result.add(info); 1142 } 1143 } 1144 return result.toArray(new NetworkInfo[result.size()]); 1145 } 1146 1147 @Override 1148 public Network getNetworkForType(int networkType) { 1149 enforceAccessPermission(); 1150 final int uid = Binder.getCallingUid(); 1151 NetworkState state = getFilteredNetworkState(networkType, uid, false); 1152 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid, false)) { 1153 return state.network; 1154 } 1155 return null; 1156 } 1157 1158 @Override 1159 public Network[] getAllNetworks() { 1160 enforceAccessPermission(); 1161 synchronized (mNetworkForNetId) { 1162 final Network[] result = new Network[mNetworkForNetId.size()]; 1163 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1164 result[i] = mNetworkForNetId.valueAt(i).network; 1165 } 1166 return result; 1167 } 1168 } 1169 1170 @Override 1171 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1172 // The basic principle is: if an app's traffic could possibly go over a 1173 // network, without the app doing anything multinetwork-specific, 1174 // (hence, by "default"), then include that network's capabilities in 1175 // the array. 1176 // 1177 // In the normal case, app traffic only goes over the system's default 1178 // network connection, so that's the only network returned. 1179 // 1180 // With a VPN in force, some app traffic may go into the VPN, and thus 1181 // over whatever underlying networks the VPN specifies, while other app 1182 // traffic may go over the system default network (e.g.: a split-tunnel 1183 // VPN, or an app disallowed by the VPN), so the set of networks 1184 // returned includes the VPN's underlying networks and the system 1185 // default. 1186 enforceAccessPermission(); 1187 1188 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1189 1190 NetworkAgentInfo nai = getDefaultNetwork(); 1191 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1192 if (nc != null) { 1193 result.put(nai.network, nc); 1194 } 1195 1196 if (!mLockdownEnabled) { 1197 synchronized (mVpns) { 1198 Vpn vpn = mVpns.get(userId); 1199 if (vpn != null) { 1200 Network[] networks = vpn.getUnderlyingNetworks(); 1201 if (networks != null) { 1202 for (Network network : networks) { 1203 nai = getNetworkAgentInfoForNetwork(network); 1204 nc = getNetworkCapabilitiesInternal(nai); 1205 if (nc != null) { 1206 result.put(network, nc); 1207 } 1208 } 1209 } 1210 } 1211 } 1212 } 1213 1214 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1215 out = result.values().toArray(out); 1216 return out; 1217 } 1218 1219 @Override 1220 public boolean isNetworkSupported(int networkType) { 1221 enforceAccessPermission(); 1222 return mLegacyTypeTracker.isTypeSupported(networkType); 1223 } 1224 1225 /** 1226 * Return LinkProperties for the active (i.e., connected) default 1227 * network interface. It is assumed that at most one default network 1228 * is active at a time. If more than one is active, it is indeterminate 1229 * which will be returned. 1230 * @return the ip properties for the active network, or {@code null} if 1231 * none is active 1232 */ 1233 @Override 1234 public LinkProperties getActiveLinkProperties() { 1235 enforceAccessPermission(); 1236 final int uid = Binder.getCallingUid(); 1237 NetworkState state = getUnfilteredActiveNetworkState(uid); 1238 return state.linkProperties; 1239 } 1240 1241 @Override 1242 public LinkProperties getLinkPropertiesForType(int networkType) { 1243 enforceAccessPermission(); 1244 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1245 if (nai != null) { 1246 synchronized (nai) { 1247 return new LinkProperties(nai.linkProperties); 1248 } 1249 } 1250 return null; 1251 } 1252 1253 // TODO - this should be ALL networks 1254 @Override 1255 public LinkProperties getLinkProperties(Network network) { 1256 enforceAccessPermission(); 1257 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1258 if (nai != null) { 1259 synchronized (nai) { 1260 return new LinkProperties(nai.linkProperties); 1261 } 1262 } 1263 return null; 1264 } 1265 1266 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1267 if (nai != null) { 1268 synchronized (nai) { 1269 if (nai.networkCapabilities != null) { 1270 return new NetworkCapabilities(nai.networkCapabilities); 1271 } 1272 } 1273 } 1274 return null; 1275 } 1276 1277 @Override 1278 public NetworkCapabilities getNetworkCapabilities(Network network) { 1279 enforceAccessPermission(); 1280 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1281 } 1282 1283 @Override 1284 public NetworkState[] getAllNetworkState() { 1285 // Require internal since we're handing out IMSI details 1286 enforceConnectivityInternalPermission(); 1287 1288 final ArrayList<NetworkState> result = Lists.newArrayList(); 1289 for (Network network : getAllNetworks()) { 1290 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1291 if (nai != null) { 1292 result.add(nai.getNetworkState()); 1293 } 1294 } 1295 return result.toArray(new NetworkState[result.size()]); 1296 } 1297 1298 @Override 1299 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1300 enforceAccessPermission(); 1301 final int uid = Binder.getCallingUid(); 1302 final long token = Binder.clearCallingIdentity(); 1303 try { 1304 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1305 if (state.networkInfo != null) { 1306 try { 1307 return mPolicyManager.getNetworkQuotaInfo(state); 1308 } catch (RemoteException e) { 1309 } 1310 } 1311 return null; 1312 } finally { 1313 Binder.restoreCallingIdentity(token); 1314 } 1315 } 1316 1317 @Override 1318 public boolean isActiveNetworkMetered() { 1319 enforceAccessPermission(); 1320 1321 final NetworkInfo info = getActiveNetworkInfo(); 1322 return (info != null) ? info.isMetered() : false; 1323 } 1324 1325 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1326 @Override 1327 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1328 int deviceType = Integer.parseInt(label); 1329 sendDataActivityBroadcast(deviceType, active, tsNanos); 1330 } 1331 }; 1332 1333 /** 1334 * Ensure that a network route exists to deliver traffic to the specified 1335 * host via the specified network interface. 1336 * @param networkType the type of the network over which traffic to the 1337 * specified host is to be routed 1338 * @param hostAddress the IP address of the host to which the route is 1339 * desired 1340 * @return {@code true} on success, {@code false} on failure 1341 */ 1342 @Override 1343 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1344 enforceChangePermission(); 1345 if (mProtectedNetworks.contains(networkType)) { 1346 enforceConnectivityInternalPermission(); 1347 } 1348 1349 InetAddress addr; 1350 try { 1351 addr = InetAddress.getByAddress(hostAddress); 1352 } catch (UnknownHostException e) { 1353 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1354 return false; 1355 } 1356 1357 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1358 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1359 return false; 1360 } 1361 1362 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1363 if (nai == null) { 1364 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1365 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1366 } else { 1367 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1368 } 1369 return false; 1370 } 1371 1372 DetailedState netState; 1373 synchronized (nai) { 1374 netState = nai.networkInfo.getDetailedState(); 1375 } 1376 1377 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1378 if (VDBG) { 1379 log("requestRouteToHostAddress on down network " 1380 + "(" + networkType + ") - dropped" 1381 + " netState=" + netState); 1382 } 1383 return false; 1384 } 1385 1386 final int uid = Binder.getCallingUid(); 1387 final long token = Binder.clearCallingIdentity(); 1388 try { 1389 LinkProperties lp; 1390 int netId; 1391 synchronized (nai) { 1392 lp = nai.linkProperties; 1393 netId = nai.network.netId; 1394 } 1395 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1396 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1397 return ok; 1398 } finally { 1399 Binder.restoreCallingIdentity(token); 1400 } 1401 } 1402 1403 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1404 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1405 if (bestRoute == null) { 1406 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1407 } else { 1408 String iface = bestRoute.getInterface(); 1409 if (bestRoute.getGateway().equals(addr)) { 1410 // if there is no better route, add the implied hostroute for our gateway 1411 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1412 } else { 1413 // if we will connect to this through another route, add a direct route 1414 // to it's gateway 1415 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1416 } 1417 } 1418 if (DBG) log("Adding legacy route " + bestRoute + 1419 " for UID/PID " + uid + "/" + Binder.getCallingPid()); 1420 try { 1421 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1422 } catch (Exception e) { 1423 // never crash - catch them all 1424 if (DBG) loge("Exception trying to add a route: " + e); 1425 return false; 1426 } 1427 return true; 1428 } 1429 1430 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1431 @Override 1432 public void onUidRulesChanged(int uid, int uidRules) { 1433 // caller is NPMS, since we only register with them 1434 if (LOGD_RULES) { 1435 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1436 } 1437 1438 synchronized (mRulesLock) { 1439 // skip update when we've already applied rules 1440 final int oldRules = mUidRules.get(uid, RULE_NONE); 1441 if (oldRules == uidRules) return; 1442 1443 if (uidRules == RULE_NONE) { 1444 mUidRules.delete(uid); 1445 } else { 1446 mUidRules.put(uid, uidRules); 1447 } 1448 } 1449 1450 // TODO: notify UID when it has requested targeted updates 1451 } 1452 1453 @Override 1454 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1455 // caller is NPMS, since we only register with them 1456 if (LOGD_RULES) { 1457 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1458 } 1459 1460 synchronized (mRulesLock) { 1461 mMeteredIfaces.clear(); 1462 for (String iface : meteredIfaces) { 1463 mMeteredIfaces.add(iface); 1464 } 1465 } 1466 } 1467 1468 @Override 1469 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1470 // caller is NPMS, since we only register with them 1471 if (LOGD_RULES) { 1472 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1473 } 1474 1475 synchronized (mRulesLock) { 1476 mRestrictBackground = restrictBackground; 1477 } 1478 1479 if (restrictBackground) { 1480 log("onRestrictBackgroundChanged(true): disabling tethering"); 1481 mTethering.untetherAll(); 1482 } 1483 } 1484 1485 @Override 1486 public void onRestrictBackgroundWhitelistChanged(int uid, boolean whitelisted) { 1487 if (LOGD_RULES) { 1488 // caller is NPMS, since we only register with them 1489 log("onRestrictBackgroundWhitelistChanged(uid=" + uid + ", whitelisted=" 1490 + whitelisted + ")"); 1491 } 1492 } 1493 @Override 1494 public void onRestrictBackgroundBlacklistChanged(int uid, boolean blacklisted) { 1495 if (LOGD_RULES) { 1496 // caller is NPMS, since we only register with them 1497 log("onRestrictBackgroundBlacklistChanged(uid=" + uid + ", blacklisted=" 1498 + blacklisted + ")"); 1499 } 1500 } 1501 }; 1502 1503 /** 1504 * Require that the caller is either in the same user or has appropriate permission to interact 1505 * across users. 1506 * 1507 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1508 */ 1509 private void enforceCrossUserPermission(int userId) { 1510 if (userId == UserHandle.getCallingUserId()) { 1511 // Not a cross-user call. 1512 return; 1513 } 1514 mContext.enforceCallingOrSelfPermission( 1515 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1516 "ConnectivityService"); 1517 } 1518 1519 private void enforceInternetPermission() { 1520 mContext.enforceCallingOrSelfPermission( 1521 android.Manifest.permission.INTERNET, 1522 "ConnectivityService"); 1523 } 1524 1525 private void enforceAccessPermission() { 1526 mContext.enforceCallingOrSelfPermission( 1527 android.Manifest.permission.ACCESS_NETWORK_STATE, 1528 "ConnectivityService"); 1529 } 1530 1531 private void enforceChangePermission() { 1532 ConnectivityManager.enforceChangePermission(mContext); 1533 } 1534 1535 private void enforceTetherAccessPermission() { 1536 mContext.enforceCallingOrSelfPermission( 1537 android.Manifest.permission.ACCESS_NETWORK_STATE, 1538 "ConnectivityService"); 1539 } 1540 1541 private void enforceConnectivityInternalPermission() { 1542 mContext.enforceCallingOrSelfPermission( 1543 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1544 "ConnectivityService"); 1545 } 1546 1547 private void enforceKeepalivePermission() { 1548 mContext.enforceCallingOrSelfPermission(KeepaliveTracker.PERMISSION, "ConnectivityService"); 1549 } 1550 1551 // Public because it's used by mLockdownTracker. 1552 public void sendConnectedBroadcast(NetworkInfo info) { 1553 enforceConnectivityInternalPermission(); 1554 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1555 } 1556 1557 private void sendInetConditionBroadcast(NetworkInfo info) { 1558 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1559 } 1560 1561 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1562 if (mLockdownTracker != null) { 1563 info = new NetworkInfo(info); 1564 mLockdownTracker.augmentNetworkInfo(info); 1565 } 1566 1567 Intent intent = new Intent(bcastType); 1568 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1569 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1570 if (info.isFailover()) { 1571 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1572 info.setFailover(false); 1573 } 1574 if (info.getReason() != null) { 1575 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1576 } 1577 if (info.getExtraInfo() != null) { 1578 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1579 info.getExtraInfo()); 1580 } 1581 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1582 return intent; 1583 } 1584 1585 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1586 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1587 } 1588 1589 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1590 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1591 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1592 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1593 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1594 final long ident = Binder.clearCallingIdentity(); 1595 try { 1596 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1597 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1598 } finally { 1599 Binder.restoreCallingIdentity(ident); 1600 } 1601 } 1602 1603 private void sendStickyBroadcast(Intent intent) { 1604 synchronized(this) { 1605 if (!mSystemReady) { 1606 mInitialBroadcast = new Intent(intent); 1607 } 1608 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1609 if (VDBG) { 1610 log("sendStickyBroadcast: action=" + intent.getAction()); 1611 } 1612 1613 Bundle options = null; 1614 final long ident = Binder.clearCallingIdentity(); 1615 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1616 final NetworkInfo ni = intent.getParcelableExtra( 1617 ConnectivityManager.EXTRA_NETWORK_INFO); 1618 if (ni.getType() == ConnectivityManager.TYPE_MOBILE_SUPL) { 1619 intent.setAction(ConnectivityManager.CONNECTIVITY_ACTION_SUPL); 1620 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1621 } else { 1622 BroadcastOptions opts = BroadcastOptions.makeBasic(); 1623 opts.setMaxManifestReceiverApiLevel(Build.VERSION_CODES.M); 1624 options = opts.toBundle(); 1625 } 1626 final IBatteryStats bs = BatteryStatsService.getService(); 1627 try { 1628 bs.noteConnectivityChanged(intent.getIntExtra( 1629 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1630 ni != null ? ni.getState().toString() : "?"); 1631 } catch (RemoteException e) { 1632 } 1633 } 1634 try { 1635 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL, options); 1636 } finally { 1637 Binder.restoreCallingIdentity(ident); 1638 } 1639 } 1640 } 1641 1642 void systemReady() { 1643 loadGlobalProxy(); 1644 1645 synchronized(this) { 1646 mSystemReady = true; 1647 if (mInitialBroadcast != null) { 1648 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1649 mInitialBroadcast = null; 1650 } 1651 } 1652 // load the global proxy at startup 1653 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1654 1655 // Try bringing up tracker, but KeyStore won't be ready yet for secondary users so wait 1656 // for user to unlock device too. 1657 updateLockdownVpn(); 1658 1659 // Configure whether mobile data is always on. 1660 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1661 1662 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1663 1664 mPermissionMonitor.startMonitoring(); 1665 } 1666 1667 /** 1668 * Setup data activity tracking for the given network. 1669 * 1670 * Every {@code setupDataActivityTracking} should be paired with a 1671 * {@link #removeDataActivityTracking} for cleanup. 1672 */ 1673 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1674 final String iface = networkAgent.linkProperties.getInterfaceName(); 1675 1676 final int timeout; 1677 int type = ConnectivityManager.TYPE_NONE; 1678 1679 if (networkAgent.networkCapabilities.hasTransport( 1680 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1681 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1682 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1683 10); 1684 type = ConnectivityManager.TYPE_MOBILE; 1685 } else if (networkAgent.networkCapabilities.hasTransport( 1686 NetworkCapabilities.TRANSPORT_WIFI)) { 1687 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1688 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1689 15); 1690 type = ConnectivityManager.TYPE_WIFI; 1691 } else { 1692 // do not track any other networks 1693 timeout = 0; 1694 } 1695 1696 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1697 try { 1698 mNetd.addIdleTimer(iface, timeout, type); 1699 } catch (Exception e) { 1700 // You shall not crash! 1701 loge("Exception in setupDataActivityTracking " + e); 1702 } 1703 } 1704 } 1705 1706 /** 1707 * Remove data activity tracking when network disconnects. 1708 */ 1709 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1710 final String iface = networkAgent.linkProperties.getInterfaceName(); 1711 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1712 1713 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1714 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1715 try { 1716 // the call fails silently if no idletimer setup for this interface 1717 mNetd.removeIdleTimer(iface); 1718 } catch (Exception e) { 1719 loge("Exception in removeDataActivityTracking " + e); 1720 } 1721 } 1722 } 1723 1724 /** 1725 * Reads the network specific MTU size from reources. 1726 * and set it on it's iface. 1727 */ 1728 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1729 final String iface = newLp.getInterfaceName(); 1730 final int mtu = newLp.getMtu(); 1731 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1732 if (VDBG) log("identical MTU - not setting"); 1733 return; 1734 } 1735 1736 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1737 if (mtu != 0) loge("Unexpected mtu value: " + mtu + ", " + iface); 1738 return; 1739 } 1740 1741 // Cannot set MTU without interface name 1742 if (TextUtils.isEmpty(iface)) { 1743 loge("Setting MTU size with null iface."); 1744 return; 1745 } 1746 1747 try { 1748 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 1749 mNetd.setMtu(iface, mtu); 1750 } catch (Exception e) { 1751 Slog.e(TAG, "exception in setMtu()" + e); 1752 } 1753 } 1754 1755 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1756 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1757 1758 // Overridden for testing purposes to avoid writing to SystemProperties. 1759 @VisibleForTesting 1760 protected int getDefaultTcpRwnd() { 1761 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1762 } 1763 1764 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1765 if (isDefaultNetwork(nai) == false) { 1766 return; 1767 } 1768 1769 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1770 String[] values = null; 1771 if (tcpBufferSizes != null) { 1772 values = tcpBufferSizes.split(","); 1773 } 1774 1775 if (values == null || values.length != 6) { 1776 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1777 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1778 values = tcpBufferSizes.split(","); 1779 } 1780 1781 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1782 1783 try { 1784 if (VDBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1785 1786 final String prefix = "/sys/kernel/ipv4/tcp_"; 1787 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1788 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1789 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1790 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1791 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1792 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1793 mCurrentTcpBufferSizes = tcpBufferSizes; 1794 } catch (IOException e) { 1795 loge("Can't set TCP buffer sizes:" + e); 1796 } 1797 1798 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1799 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1800 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1801 if (rwndValue != 0) { 1802 SystemProperties.set(sysctlKey, rwndValue.toString()); 1803 } 1804 } 1805 1806 private void flushVmDnsCache() { 1807 /* 1808 * Tell the VMs to toss their DNS caches 1809 */ 1810 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1811 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1812 /* 1813 * Connectivity events can happen before boot has completed ... 1814 */ 1815 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1816 final long ident = Binder.clearCallingIdentity(); 1817 try { 1818 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1819 } finally { 1820 Binder.restoreCallingIdentity(ident); 1821 } 1822 } 1823 1824 @Override 1825 public int getRestoreDefaultNetworkDelay(int networkType) { 1826 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1827 NETWORK_RESTORE_DELAY_PROP_NAME); 1828 if(restoreDefaultNetworkDelayStr != null && 1829 restoreDefaultNetworkDelayStr.length() != 0) { 1830 try { 1831 return Integer.parseInt(restoreDefaultNetworkDelayStr); 1832 } catch (NumberFormatException e) { 1833 } 1834 } 1835 // if the system property isn't set, use the value for the apn type 1836 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1837 1838 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1839 (mNetConfigs[networkType] != null)) { 1840 ret = mNetConfigs[networkType].restoreTime; 1841 } 1842 return ret; 1843 } 1844 1845 private boolean argsContain(String[] args, String target) { 1846 for (String arg : args) { 1847 if (arg.equals(target)) return true; 1848 } 1849 return false; 1850 } 1851 1852 private void dumpNetworkDiagnostics(IndentingPrintWriter pw) { 1853 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1854 final long DIAG_TIME_MS = 5000; 1855 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1856 // Start gathering diagnostic information. 1857 netDiags.add(new NetworkDiagnostics( 1858 nai.network, 1859 new LinkProperties(nai.linkProperties), // Must be a copy. 1860 DIAG_TIME_MS)); 1861 } 1862 1863 for (NetworkDiagnostics netDiag : netDiags) { 1864 pw.println(); 1865 netDiag.waitForMeasurements(); 1866 netDiag.dump(pw); 1867 } 1868 } 1869 1870 @Override 1871 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1872 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1873 if (mContext.checkCallingOrSelfPermission( 1874 android.Manifest.permission.DUMP) 1875 != PackageManager.PERMISSION_GRANTED) { 1876 pw.println("Permission Denial: can't dump ConnectivityService " + 1877 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1878 Binder.getCallingUid()); 1879 return; 1880 } 1881 1882 if (argsContain(args, "--diag")) { 1883 dumpNetworkDiagnostics(pw); 1884 return; 1885 } 1886 1887 pw.print("NetworkFactories for:"); 1888 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1889 pw.print(" " + nfi.name); 1890 } 1891 pw.println(); 1892 pw.println(); 1893 1894 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 1895 pw.print("Active default network: "); 1896 if (defaultNai == null) { 1897 pw.println("none"); 1898 } else { 1899 pw.println(defaultNai.network.netId); 1900 } 1901 pw.println(); 1902 1903 pw.println("Current Networks:"); 1904 pw.increaseIndent(); 1905 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1906 pw.println(nai.toString()); 1907 pw.increaseIndent(); 1908 pw.println("Requests:"); 1909 pw.increaseIndent(); 1910 for (int i = 0; i < nai.numNetworkRequests(); i++) { 1911 pw.println(nai.requestAt(i).toString()); 1912 } 1913 pw.decreaseIndent(); 1914 pw.println("Lingered:"); 1915 pw.increaseIndent(); 1916 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1917 pw.decreaseIndent(); 1918 pw.decreaseIndent(); 1919 } 1920 pw.decreaseIndent(); 1921 pw.println(); 1922 1923 pw.println("Metered Interfaces:"); 1924 pw.increaseIndent(); 1925 for (String value : mMeteredIfaces) { 1926 pw.println(value); 1927 } 1928 pw.decreaseIndent(); 1929 pw.println(); 1930 1931 pw.print("Restrict background: "); 1932 pw.println(mRestrictBackground); 1933 pw.println(); 1934 1935 pw.println("Status for known UIDs:"); 1936 pw.increaseIndent(); 1937 final int size = mUidRules.size(); 1938 for (int i = 0; i < size; i++) { 1939 final int uid = mUidRules.keyAt(i); 1940 pw.print("UID="); 1941 pw.print(uid); 1942 final int uidRules = mUidRules.get(uid, RULE_NONE); 1943 pw.print(" rules="); 1944 pw.print(uidRulesToString(uidRules)); 1945 pw.println(); 1946 } 1947 pw.println(); 1948 pw.decreaseIndent(); 1949 1950 pw.println("Network Requests:"); 1951 pw.increaseIndent(); 1952 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1953 pw.println(nri.toString()); 1954 } 1955 pw.println(); 1956 pw.decreaseIndent(); 1957 1958 mLegacyTypeTracker.dump(pw); 1959 1960 synchronized (this) { 1961 pw.print("mNetTransitionWakeLock: currently " + 1962 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1963 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1964 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1965 } else { 1966 pw.println(", last requested never"); 1967 } 1968 } 1969 1970 pw.println(); 1971 mTethering.dump(fd, pw, args); 1972 1973 pw.println(); 1974 mKeepaliveTracker.dump(pw); 1975 1976 pw.println(); 1977 1978 if (mInetLog != null && mInetLog.size() > 0) { 1979 pw.println(); 1980 pw.println("Inet condition reports:"); 1981 pw.increaseIndent(); 1982 for(int i = 0; i < mInetLog.size(); i++) { 1983 pw.println(mInetLog.get(i)); 1984 } 1985 pw.decreaseIndent(); 1986 } 1987 1988 if (argsContain(args, "--short") == false) { 1989 pw.println(); 1990 synchronized (mValidationLogs) { 1991 pw.println("mValidationLogs (most recent first):"); 1992 for (ValidationLog p : mValidationLogs) { 1993 pw.println(p.mNetwork + " - " + p.mNetworkExtraInfo); 1994 pw.increaseIndent(); 1995 p.mLog.dump(fd, pw, args); 1996 pw.decreaseIndent(); 1997 } 1998 } 1999 2000 pw.println(); 2001 pw.println("mNetworkRequestInfoLogs (most recent first):"); 2002 pw.increaseIndent(); 2003 mNetworkRequestInfoLogs.reverseDump(fd, pw, args); 2004 pw.decreaseIndent(); 2005 } 2006 } 2007 2008 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, int what) { 2009 if (nai.network == null) return false; 2010 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 2011 if (officialNai != null && officialNai.equals(nai)) return true; 2012 if (officialNai != null || VDBG) { 2013 final String msg = sMagicDecoderRing.get(what, Integer.toString(what)); 2014 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 2015 " - " + nai); 2016 } 2017 return false; 2018 } 2019 2020 // must be stateless - things change under us. 2021 private class NetworkStateTrackerHandler extends Handler { 2022 public NetworkStateTrackerHandler(Looper looper) { 2023 super(looper); 2024 } 2025 2026 private boolean maybeHandleAsyncChannelMessage(Message msg) { 2027 switch (msg.what) { 2028 default: 2029 return false; 2030 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 2031 handleAsyncChannelHalfConnect(msg); 2032 break; 2033 } 2034 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 2035 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2036 if (nai != null) nai.asyncChannel.disconnect(); 2037 break; 2038 } 2039 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 2040 handleAsyncChannelDisconnected(msg); 2041 break; 2042 } 2043 } 2044 return true; 2045 } 2046 2047 private void maybeHandleNetworkAgentMessage(Message msg) { 2048 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2049 if (nai == null) { 2050 if (VDBG) { 2051 final String what = sMagicDecoderRing.get(msg.what, Integer.toString(msg.what)); 2052 log(String.format("%s from unknown NetworkAgent", what)); 2053 } 2054 return; 2055 } 2056 2057 switch (msg.what) { 2058 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 2059 final NetworkCapabilities networkCapabilities = (NetworkCapabilities) msg.obj; 2060 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL) || 2061 networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 2062 Slog.wtf(TAG, "BUG: " + nai + " has CS-managed capability."); 2063 } 2064 if (nai.everConnected && !nai.networkCapabilities.equalImmutableCapabilities( 2065 networkCapabilities)) { 2066 Slog.wtf(TAG, "BUG: " + nai + " changed immutable capabilities: " 2067 + nai.networkCapabilities + " -> " + networkCapabilities); 2068 } 2069 updateCapabilities(nai, networkCapabilities); 2070 break; 2071 } 2072 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 2073 if (VDBG) { 2074 log("Update of LinkProperties for " + nai.name() + 2075 "; created=" + nai.created + 2076 "; everConnected=" + nai.everConnected); 2077 } 2078 LinkProperties oldLp = nai.linkProperties; 2079 synchronized (nai) { 2080 nai.linkProperties = (LinkProperties)msg.obj; 2081 } 2082 if (nai.everConnected) updateLinkProperties(nai, oldLp); 2083 break; 2084 } 2085 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 2086 NetworkInfo info = (NetworkInfo) msg.obj; 2087 updateNetworkInfo(nai, info); 2088 break; 2089 } 2090 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 2091 Integer score = (Integer) msg.obj; 2092 if (score != null) updateNetworkScore(nai, score.intValue()); 2093 break; 2094 } 2095 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 2096 try { 2097 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2098 } catch (Exception e) { 2099 // Never crash! 2100 loge("Exception in addVpnUidRanges: " + e); 2101 } 2102 break; 2103 } 2104 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 2105 try { 2106 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2107 } catch (Exception e) { 2108 // Never crash! 2109 loge("Exception in removeVpnUidRanges: " + e); 2110 } 2111 break; 2112 } 2113 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 2114 if (nai.everConnected && !nai.networkMisc.explicitlySelected) { 2115 loge("ERROR: already-connected network explicitly selected."); 2116 } 2117 nai.networkMisc.explicitlySelected = true; 2118 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 2119 break; 2120 } 2121 case NetworkAgent.EVENT_PACKET_KEEPALIVE: { 2122 mKeepaliveTracker.handleEventPacketKeepalive(nai, msg); 2123 break; 2124 } 2125 } 2126 } 2127 2128 private boolean maybeHandleNetworkMonitorMessage(Message msg) { 2129 switch (msg.what) { 2130 default: 2131 return false; 2132 case NetworkMonitor.EVENT_NETWORK_TESTED: { 2133 final NetworkAgentInfo nai; 2134 synchronized (mNetworkForNetId) { 2135 nai = mNetworkForNetId.get(msg.arg2); 2136 } 2137 if (nai != null) { 2138 final boolean valid = 2139 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2140 if (DBG) log(nai.name() + " validation " + (valid ? "passed" : "failed") + 2141 (msg.obj == null ? "" : " with redirect to " + (String)msg.obj)); 2142 if (valid != nai.lastValidated) { 2143 final int oldScore = nai.getCurrentScore(); 2144 nai.lastValidated = valid; 2145 nai.everValidated |= valid; 2146 updateCapabilities(nai, nai.networkCapabilities); 2147 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2148 if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); 2149 } 2150 updateInetCondition(nai); 2151 // Let the NetworkAgent know the state of its network 2152 Bundle redirectUrlBundle = new Bundle(); 2153 redirectUrlBundle.putString(NetworkAgent.REDIRECT_URL_KEY, (String)msg.obj); 2154 nai.asyncChannel.sendMessage( 2155 NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2156 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2157 0, redirectUrlBundle); 2158 } 2159 break; 2160 } 2161 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2162 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2163 if (isLiveNetworkAgent(nai, msg.what)) { 2164 handleLingerComplete(nai); 2165 } 2166 break; 2167 } 2168 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2169 final int netId = msg.arg2; 2170 final boolean visible = (msg.arg1 != 0); 2171 final NetworkAgentInfo nai; 2172 synchronized (mNetworkForNetId) { 2173 nai = mNetworkForNetId.get(netId); 2174 } 2175 // If captive portal status has changed, update capabilities. 2176 if (nai != null && (visible != nai.lastCaptivePortalDetected)) { 2177 nai.lastCaptivePortalDetected = visible; 2178 nai.everCaptivePortalDetected |= visible; 2179 updateCapabilities(nai, nai.networkCapabilities); 2180 } 2181 if (!visible) { 2182 setProvNotificationVisibleIntent(false, netId, null, 0, null, null, false); 2183 } else { 2184 if (nai == null) { 2185 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2186 break; 2187 } 2188 if (!nai.networkMisc.provisioningNotificationDisabled) { 2189 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2190 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), 2191 (PendingIntent)msg.obj, nai.networkMisc.explicitlySelected); 2192 } 2193 } 2194 break; 2195 } 2196 } 2197 return true; 2198 } 2199 2200 @Override 2201 public void handleMessage(Message msg) { 2202 if (!maybeHandleAsyncChannelMessage(msg) && !maybeHandleNetworkMonitorMessage(msg)) { 2203 maybeHandleNetworkAgentMessage(msg); 2204 } 2205 } 2206 } 2207 2208 private void linger(NetworkAgentInfo nai) { 2209 nai.lingering = true; 2210 logNetworkEvent(nai, NetworkEvent.NETWORK_LINGER); 2211 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 2212 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 2213 } 2214 2215 // Cancel any lingering so the linger timeout doesn't teardown a network. 2216 // This should be called when a network begins satisfying a NetworkRequest. 2217 // Note: depending on what state the NetworkMonitor is in (e.g., 2218 // if it's awaiting captive portal login, or if validation failed), this 2219 // may trigger a re-evaluation of the network. 2220 private void unlinger(NetworkAgentInfo nai) { 2221 nai.networkLingered.clear(); 2222 if (!nai.lingering) return; 2223 nai.lingering = false; 2224 logNetworkEvent(nai, NetworkEvent.NETWORK_UNLINGER); 2225 if (VDBG) log("Canceling linger of " + nai.name()); 2226 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2227 } 2228 2229 private void handleAsyncChannelHalfConnect(Message msg) { 2230 AsyncChannel ac = (AsyncChannel) msg.obj; 2231 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2232 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2233 if (VDBG) log("NetworkFactory connected"); 2234 // A network factory has connected. Send it all current NetworkRequests. 2235 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2236 if (!nri.request.isRequest()) continue; 2237 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2238 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2239 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2240 } 2241 } else { 2242 loge("Error connecting NetworkFactory"); 2243 mNetworkFactoryInfos.remove(msg.obj); 2244 } 2245 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2246 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2247 if (VDBG) log("NetworkAgent connected"); 2248 // A network agent has requested a connection. Establish the connection. 2249 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2250 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2251 } else { 2252 loge("Error connecting NetworkAgent"); 2253 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2254 if (nai != null) { 2255 final boolean wasDefault = isDefaultNetwork(nai); 2256 synchronized (mNetworkForNetId) { 2257 mNetworkForNetId.remove(nai.network.netId); 2258 mNetIdInUse.delete(nai.network.netId); 2259 } 2260 // Just in case. 2261 mLegacyTypeTracker.remove(nai, wasDefault); 2262 } 2263 } 2264 } 2265 } 2266 2267 private void handleAsyncChannelDisconnected(Message msg) { 2268 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2269 if (nai != null) { 2270 if (DBG) { 2271 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.numNetworkRequests()); 2272 } 2273 // A network agent has disconnected. 2274 // TODO - if we move the logic to the network agent (have them disconnect 2275 // because they lost all their requests or because their score isn't good) 2276 // then they would disconnect organically, report their new state and then 2277 // disconnect the channel. 2278 if (nai.networkInfo.isConnected()) { 2279 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2280 null, null); 2281 } 2282 final boolean wasDefault = isDefaultNetwork(nai); 2283 if (wasDefault) { 2284 mDefaultInetConditionPublished = 0; 2285 // Log default network disconnection before required book-keeping. 2286 // Let rematchAllNetworksAndRequests() below record a new default network event 2287 // if there is a fallback. Taken together, the two form a X -> 0, 0 -> Y sequence 2288 // whose timestamps tell how long it takes to recover a default network. 2289 logDefaultNetworkEvent(null, nai); 2290 } 2291 notifyIfacesChangedForNetworkStats(); 2292 // TODO - we shouldn't send CALLBACK_LOST to requests that can be satisfied 2293 // by other networks that are already connected. Perhaps that can be done by 2294 // sending all CALLBACK_LOST messages (for requests, not listens) at the end 2295 // of rematchAllNetworksAndRequests 2296 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2297 mKeepaliveTracker.handleStopAllKeepalives(nai, 2298 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 2299 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2300 mNetworkAgentInfos.remove(msg.replyTo); 2301 updateClat(null, nai.linkProperties, nai); 2302 synchronized (mNetworkForNetId) { 2303 // Remove the NetworkAgent, but don't mark the netId as 2304 // available until we've told netd to delete it below. 2305 mNetworkForNetId.remove(nai.network.netId); 2306 } 2307 // Remove all previously satisfied requests. 2308 for (int i = 0; i < nai.numNetworkRequests(); i++) { 2309 NetworkRequest request = nai.requestAt(i); 2310 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2311 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2312 mNetworkForRequestId.remove(request.requestId); 2313 sendUpdatedScoreToFactories(request, 0); 2314 } 2315 } 2316 if (nai.isSatisfyingRequest(mDefaultRequest.requestId)) { 2317 removeDataActivityTracking(nai); 2318 notifyLockdownVpn(nai); 2319 requestNetworkTransitionWakelock(nai.name()); 2320 } 2321 mLegacyTypeTracker.remove(nai, wasDefault); 2322 rematchAllNetworksAndRequests(null, 0); 2323 if (nai.created) { 2324 // Tell netd to clean up the configuration for this network 2325 // (routing rules, DNS, etc). 2326 // This may be slow as it requires a lot of netd shelling out to ip and 2327 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2328 // after we've rematched networks with requests which should make a potential 2329 // fallback network the default or requested a new network from the 2330 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2331 // long time. 2332 try { 2333 mNetd.removeNetwork(nai.network.netId); 2334 } catch (Exception e) { 2335 loge("Exception removing network: " + e); 2336 } 2337 } 2338 synchronized (mNetworkForNetId) { 2339 mNetIdInUse.delete(nai.network.netId); 2340 } 2341 } else { 2342 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2343 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2344 } 2345 } 2346 2347 // If this method proves to be too slow then we can maintain a separate 2348 // pendingIntent => NetworkRequestInfo map. 2349 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2350 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2351 Intent intent = pendingIntent.getIntent(); 2352 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2353 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2354 if (existingPendingIntent != null && 2355 existingPendingIntent.getIntent().filterEquals(intent)) { 2356 return entry.getValue(); 2357 } 2358 } 2359 return null; 2360 } 2361 2362 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2363 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2364 2365 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2366 if (existingRequest != null) { // remove the existing request. 2367 if (DBG) log("Replacing " + existingRequest.request + " with " 2368 + nri.request + " because their intents matched."); 2369 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2370 } 2371 handleRegisterNetworkRequest(nri); 2372 } 2373 2374 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2375 mNetworkRequests.put(nri.request, nri); 2376 mNetworkRequestInfoLogs.log("REGISTER " + nri); 2377 if (!nri.request.isRequest()) { 2378 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2379 if (nri.request.networkCapabilities.hasSignalStrength() && 2380 network.satisfiesImmutableCapabilitiesOf(nri.request)) { 2381 updateSignalStrengthThresholds(network, "REGISTER", nri.request); 2382 } 2383 } 2384 } 2385 rematchAllNetworksAndRequests(null, 0); 2386 if (nri.request.isRequest() && mNetworkForRequestId.get(nri.request.requestId) == null) { 2387 sendUpdatedScoreToFactories(nri.request, 0); 2388 } 2389 } 2390 2391 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2392 int callingUid) { 2393 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2394 if (nri != null) { 2395 handleReleaseNetworkRequest(nri.request, callingUid); 2396 } 2397 } 2398 2399 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2400 // This is whether it is satisfying any NetworkRequests or were it to become validated, 2401 // would it have a chance of satisfying any NetworkRequests. 2402 private boolean unneeded(NetworkAgentInfo nai) { 2403 if (!nai.everConnected || nai.isVPN() || nai.lingering) return false; 2404 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2405 // If this Network is already the highest scoring Network for a request, or if 2406 // there is hope for it to become one if it validated, then it is needed. 2407 if (nri.request.isRequest() && nai.satisfies(nri.request) && 2408 (nai.isSatisfyingRequest(nri.request.requestId) || 2409 // Note that this catches two important cases: 2410 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2411 // is currently satisfying the request. This is desirable when 2412 // cellular ends up validating but WiFi does not. 2413 // 2. Unvalidated WiFi will not be reaped when validated cellular 2414 // is currently satisfying the request. This is desirable when 2415 // WiFi ends up validating and out scoring cellular. 2416 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2417 nai.getCurrentScoreAsValidated())) { 2418 return false; 2419 } 2420 } 2421 return true; 2422 } 2423 2424 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2425 NetworkRequestInfo nri = mNetworkRequests.get(request); 2426 if (nri != null) { 2427 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2428 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2429 return; 2430 } 2431 if (VDBG || (DBG && nri.request.isRequest())) log("releasing " + request); 2432 nri.unlinkDeathRecipient(); 2433 mNetworkRequests.remove(request); 2434 synchronized (mUidToNetworkRequestCount) { 2435 int requests = mUidToNetworkRequestCount.get(nri.mUid, 0); 2436 if (requests < 1) { 2437 Slog.wtf(TAG, "BUG: too small request count " + requests + " for UID " + 2438 nri.mUid); 2439 } else if (requests == 1) { 2440 mUidToNetworkRequestCount.removeAt( 2441 mUidToNetworkRequestCount.indexOfKey(nri.mUid)); 2442 } else { 2443 mUidToNetworkRequestCount.put(nri.mUid, requests - 1); 2444 } 2445 } 2446 mNetworkRequestInfoLogs.log("RELEASE " + nri); 2447 if (nri.request.isRequest()) { 2448 // Find all networks that are satisfying this request and remove the request 2449 // from their request lists. 2450 // TODO - it's my understanding that for a request there is only a single 2451 // network satisfying it, so this loop is wasteful 2452 boolean wasKept = false; 2453 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2454 if (nai.isSatisfyingRequest(nri.request.requestId)) { 2455 nai.removeRequest(nri.request.requestId); 2456 if (VDBG) { 2457 log(" Removing from current network " + nai.name() + 2458 ", leaving " + nai.numNetworkRequests() + " requests."); 2459 } 2460 if (unneeded(nai)) { 2461 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2462 teardownUnneededNetwork(nai); 2463 } else { 2464 // suspect there should only be one pass through here 2465 // but if any were kept do the check below 2466 wasKept |= true; 2467 } 2468 } 2469 } 2470 2471 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2472 if (nai != null) { 2473 mNetworkForRequestId.remove(nri.request.requestId); 2474 } 2475 // Maintain the illusion. When this request arrived, we might have pretended 2476 // that a network connected to serve it, even though the network was already 2477 // connected. Now that this request has gone away, we might have to pretend 2478 // that the network disconnected. LegacyTypeTracker will generate that 2479 // phantom disconnect for this type. 2480 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2481 boolean doRemove = true; 2482 if (wasKept) { 2483 // check if any of the remaining requests for this network are for the 2484 // same legacy type - if so, don't remove the nai 2485 for (int i = 0; i < nai.numNetworkRequests(); i++) { 2486 NetworkRequest otherRequest = nai.requestAt(i); 2487 if (otherRequest.legacyType == nri.request.legacyType && 2488 otherRequest.isRequest()) { 2489 if (DBG) log(" still have other legacy request - leaving"); 2490 doRemove = false; 2491 } 2492 } 2493 } 2494 2495 if (doRemove) { 2496 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2497 } 2498 } 2499 2500 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2501 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2502 nri.request); 2503 } 2504 } else { 2505 // listens don't have a singular affectedNetwork. Check all networks to see 2506 // if this listen request applies and remove it. 2507 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2508 nai.removeRequest(nri.request.requestId); 2509 if (nri.request.networkCapabilities.hasSignalStrength() && 2510 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 2511 updateSignalStrengthThresholds(nai, "RELEASE", nri.request); 2512 } 2513 } 2514 } 2515 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2516 } 2517 } 2518 2519 @Override 2520 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2521 enforceConnectivityInternalPermission(); 2522 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2523 accept ? 1 : 0, always ? 1: 0, network)); 2524 } 2525 2526 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2527 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2528 " accept=" + accept + " always=" + always); 2529 2530 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2531 if (nai == null) { 2532 // Nothing to do. 2533 return; 2534 } 2535 2536 if (nai.everValidated) { 2537 // The network validated while the dialog box was up. Take no action. 2538 return; 2539 } 2540 2541 if (!nai.networkMisc.explicitlySelected) { 2542 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2543 } 2544 2545 if (accept != nai.networkMisc.acceptUnvalidated) { 2546 int oldScore = nai.getCurrentScore(); 2547 nai.networkMisc.acceptUnvalidated = accept; 2548 rematchAllNetworksAndRequests(nai, oldScore); 2549 sendUpdatedScoreToFactories(nai); 2550 } 2551 2552 if (always) { 2553 nai.asyncChannel.sendMessage( 2554 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2555 } 2556 2557 if (!accept) { 2558 // Tell the NetworkAgent to not automatically reconnect to the network. 2559 nai.asyncChannel.sendMessage(NetworkAgent.CMD_PREVENT_AUTOMATIC_RECONNECT); 2560 // Teardown the nework. 2561 teardownUnneededNetwork(nai); 2562 } 2563 2564 } 2565 2566 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2567 if (VDBG) log("scheduleUnvalidatedPrompt " + nai.network); 2568 mHandler.sendMessageDelayed( 2569 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2570 PROMPT_UNVALIDATED_DELAY_MS); 2571 } 2572 2573 private void handlePromptUnvalidated(Network network) { 2574 if (VDBG) log("handlePromptUnvalidated " + network); 2575 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2576 2577 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2578 // we haven't already been told to switch to it regardless of whether it validated or not. 2579 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2580 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2581 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2582 return; 2583 } 2584 2585 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2586 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2587 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2588 intent.setClassName("com.android.settings", 2589 "com.android.settings.wifi.WifiNoInternetDialog"); 2590 2591 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2592 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2593 2594 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2595 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent, true); 2596 } 2597 2598 private class InternalHandler extends Handler { 2599 public InternalHandler(Looper looper) { 2600 super(looper); 2601 } 2602 2603 @Override 2604 public void handleMessage(Message msg) { 2605 switch (msg.what) { 2606 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2607 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2608 String causedBy = null; 2609 synchronized (ConnectivityService.this) { 2610 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2611 mNetTransitionWakeLock.isHeld()) { 2612 mNetTransitionWakeLock.release(); 2613 causedBy = mNetTransitionWakeLockCausedBy; 2614 } else { 2615 break; 2616 } 2617 } 2618 if (VDBG) { 2619 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2620 log("Failed to find a new network - expiring NetTransition Wakelock"); 2621 } else { 2622 log("NetTransition Wakelock (" + 2623 (causedBy == null ? "unknown" : causedBy) + 2624 " cleared because we found a replacement network"); 2625 } 2626 } 2627 break; 2628 } 2629 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2630 handleDeprecatedGlobalHttpProxy(); 2631 break; 2632 } 2633 case EVENT_PROXY_HAS_CHANGED: { 2634 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2635 break; 2636 } 2637 case EVENT_REGISTER_NETWORK_FACTORY: { 2638 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2639 break; 2640 } 2641 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2642 handleUnregisterNetworkFactory((Messenger)msg.obj); 2643 break; 2644 } 2645 case EVENT_REGISTER_NETWORK_AGENT: { 2646 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2647 break; 2648 } 2649 case EVENT_REGISTER_NETWORK_REQUEST: 2650 case EVENT_REGISTER_NETWORK_LISTENER: { 2651 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2652 break; 2653 } 2654 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2655 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2656 handleRegisterNetworkRequestWithIntent(msg); 2657 break; 2658 } 2659 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2660 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2661 break; 2662 } 2663 case EVENT_RELEASE_NETWORK_REQUEST: { 2664 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2665 break; 2666 } 2667 case EVENT_SET_ACCEPT_UNVALIDATED: { 2668 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2669 break; 2670 } 2671 case EVENT_PROMPT_UNVALIDATED: { 2672 handlePromptUnvalidated((Network) msg.obj); 2673 break; 2674 } 2675 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2676 handleMobileDataAlwaysOn(); 2677 break; 2678 } 2679 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2680 case NetworkAgent.CMD_START_PACKET_KEEPALIVE: { 2681 mKeepaliveTracker.handleStartKeepalive(msg); 2682 break; 2683 } 2684 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2685 case NetworkAgent.CMD_STOP_PACKET_KEEPALIVE: { 2686 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork((Network) msg.obj); 2687 int slot = msg.arg1; 2688 int reason = msg.arg2; 2689 mKeepaliveTracker.handleStopKeepalive(nai, slot, reason); 2690 break; 2691 } 2692 case EVENT_SYSTEM_READY: { 2693 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2694 nai.networkMonitor.systemReady = true; 2695 } 2696 break; 2697 } 2698 } 2699 } 2700 } 2701 2702 // javadoc from interface 2703 @Override 2704 public int tether(String iface) { 2705 ConnectivityManager.enforceTetherChangePermission(mContext); 2706 if (isTetheringSupported()) { 2707 final int status = mTethering.tether(iface); 2708 if (status == ConnectivityManager.TETHER_ERROR_NO_ERROR) { 2709 try { 2710 mPolicyManager.onTetheringChanged(iface, true); 2711 } catch (RemoteException e) { 2712 } 2713 } 2714 return status; 2715 } else { 2716 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2717 } 2718 } 2719 2720 // javadoc from interface 2721 @Override 2722 public int untether(String iface) { 2723 ConnectivityManager.enforceTetherChangePermission(mContext); 2724 2725 if (isTetheringSupported()) { 2726 final int status = mTethering.untether(iface); 2727 if (status == ConnectivityManager.TETHER_ERROR_NO_ERROR) { 2728 try { 2729 mPolicyManager.onTetheringChanged(iface, false); 2730 } catch (RemoteException e) { 2731 } 2732 } 2733 return status; 2734 } else { 2735 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2736 } 2737 } 2738 2739 // javadoc from interface 2740 @Override 2741 public int getLastTetherError(String iface) { 2742 enforceTetherAccessPermission(); 2743 2744 if (isTetheringSupported()) { 2745 return mTethering.getLastTetherError(iface); 2746 } else { 2747 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2748 } 2749 } 2750 2751 // TODO - proper iface API for selection by property, inspection, etc 2752 @Override 2753 public String[] getTetherableUsbRegexs() { 2754 enforceTetherAccessPermission(); 2755 if (isTetheringSupported()) { 2756 return mTethering.getTetherableUsbRegexs(); 2757 } else { 2758 return new String[0]; 2759 } 2760 } 2761 2762 @Override 2763 public String[] getTetherableWifiRegexs() { 2764 enforceTetherAccessPermission(); 2765 if (isTetheringSupported()) { 2766 return mTethering.getTetherableWifiRegexs(); 2767 } else { 2768 return new String[0]; 2769 } 2770 } 2771 2772 @Override 2773 public String[] getTetherableBluetoothRegexs() { 2774 enforceTetherAccessPermission(); 2775 if (isTetheringSupported()) { 2776 return mTethering.getTetherableBluetoothRegexs(); 2777 } else { 2778 return new String[0]; 2779 } 2780 } 2781 2782 @Override 2783 public int setUsbTethering(boolean enable) { 2784 ConnectivityManager.enforceTetherChangePermission(mContext); 2785 if (isTetheringSupported()) { 2786 return mTethering.setUsbTethering(enable); 2787 } else { 2788 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2789 } 2790 } 2791 2792 // TODO - move iface listing, queries, etc to new module 2793 // javadoc from interface 2794 @Override 2795 public String[] getTetherableIfaces() { 2796 enforceTetherAccessPermission(); 2797 return mTethering.getTetherableIfaces(); 2798 } 2799 2800 @Override 2801 public String[] getTetheredIfaces() { 2802 enforceTetherAccessPermission(); 2803 return mTethering.getTetheredIfaces(); 2804 } 2805 2806 @Override 2807 public String[] getTetheringErroredIfaces() { 2808 enforceTetherAccessPermission(); 2809 return mTethering.getErroredIfaces(); 2810 } 2811 2812 @Override 2813 public String[] getTetheredDhcpRanges() { 2814 enforceConnectivityInternalPermission(); 2815 return mTethering.getTetheredDhcpRanges(); 2816 } 2817 2818 // if ro.tether.denied = true we default to no tethering 2819 // gservices could set the secure setting to 1 though to enable it on a build where it 2820 // had previously been turned off. 2821 @Override 2822 public boolean isTetheringSupported() { 2823 enforceTetherAccessPermission(); 2824 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2825 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2826 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2827 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2828 return tetherEnabledInSettings && mUserManager.isAdminUser() && 2829 ((mTethering.getTetherableUsbRegexs().length != 0 || 2830 mTethering.getTetherableWifiRegexs().length != 0 || 2831 mTethering.getTetherableBluetoothRegexs().length != 0) && 2832 mTethering.getUpstreamIfaceTypes().length != 0); 2833 } 2834 2835 @Override 2836 public void startTethering(int type, ResultReceiver receiver, 2837 boolean showProvisioningUi) { 2838 ConnectivityManager.enforceTetherChangePermission(mContext); 2839 if (!isTetheringSupported()) { 2840 receiver.send(ConnectivityManager.TETHER_ERROR_UNSUPPORTED, null); 2841 return; 2842 } 2843 mTethering.startTethering(type, receiver, showProvisioningUi); 2844 } 2845 2846 @Override 2847 public void stopTethering(int type) { 2848 ConnectivityManager.enforceTetherChangePermission(mContext); 2849 mTethering.stopTethering(type); 2850 } 2851 2852 // Called when we lose the default network and have no replacement yet. 2853 // This will automatically be cleared after X seconds or a new default network 2854 // becomes CONNECTED, whichever happens first. The timer is started by the 2855 // first caller and not restarted by subsequent callers. 2856 private void requestNetworkTransitionWakelock(String forWhom) { 2857 int serialNum = 0; 2858 synchronized (this) { 2859 if (mNetTransitionWakeLock.isHeld()) return; 2860 serialNum = ++mNetTransitionWakeLockSerialNumber; 2861 mNetTransitionWakeLock.acquire(); 2862 mNetTransitionWakeLockCausedBy = forWhom; 2863 } 2864 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2865 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2866 mNetTransitionWakeLockTimeout); 2867 return; 2868 } 2869 2870 // 100 percent is full good, 0 is full bad. 2871 @Override 2872 public void reportInetCondition(int networkType, int percentage) { 2873 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2874 if (nai == null) return; 2875 reportNetworkConnectivity(nai.network, percentage > 50); 2876 } 2877 2878 @Override 2879 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2880 enforceAccessPermission(); 2881 enforceInternetPermission(); 2882 2883 NetworkAgentInfo nai; 2884 if (network == null) { 2885 nai = getDefaultNetwork(); 2886 } else { 2887 nai = getNetworkAgentInfoForNetwork(network); 2888 } 2889 if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || 2890 nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { 2891 return; 2892 } 2893 // Revalidate if the app report does not match our current validated state. 2894 if (hasConnectivity == nai.lastValidated) return; 2895 final int uid = Binder.getCallingUid(); 2896 if (DBG) { 2897 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2898 ") by " + uid); 2899 } 2900 synchronized (nai) { 2901 // Validating a network that has not yet connected could result in a call to 2902 // rematchNetworkAndRequests() which is not meant to work on such networks. 2903 if (!nai.everConnected) return; 2904 2905 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid, false)) return; 2906 2907 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2908 } 2909 } 2910 2911 private ProxyInfo getDefaultProxy() { 2912 // this information is already available as a world read/writable jvm property 2913 // so this API change wouldn't have a benifit. It also breaks the passing 2914 // of proxy info to all the JVMs. 2915 // enforceAccessPermission(); 2916 synchronized (mProxyLock) { 2917 ProxyInfo ret = mGlobalProxy; 2918 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2919 return ret; 2920 } 2921 } 2922 2923 @Override 2924 public ProxyInfo getProxyForNetwork(Network network) { 2925 if (network == null) return getDefaultProxy(); 2926 final ProxyInfo globalProxy = getGlobalProxy(); 2927 if (globalProxy != null) return globalProxy; 2928 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2929 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2930 // caller may not have. 2931 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2932 if (nai == null) return null; 2933 synchronized (nai) { 2934 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2935 if (proxyInfo == null) return null; 2936 return new ProxyInfo(proxyInfo); 2937 } 2938 } 2939 2940 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2941 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2942 // proxy is null then there is no proxy in place). 2943 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2944 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2945 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2946 proxy = null; 2947 } 2948 return proxy; 2949 } 2950 2951 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2952 // better for determining if a new proxy broadcast is necessary: 2953 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2954 // avoid unnecessary broadcasts. 2955 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2956 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2957 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2958 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2959 // all set. 2960 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2961 a = canonicalizeProxyInfo(a); 2962 b = canonicalizeProxyInfo(b); 2963 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2964 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2965 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2966 } 2967 2968 public void setGlobalProxy(ProxyInfo proxyProperties) { 2969 enforceConnectivityInternalPermission(); 2970 2971 synchronized (mProxyLock) { 2972 if (proxyProperties == mGlobalProxy) return; 2973 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2974 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2975 2976 String host = ""; 2977 int port = 0; 2978 String exclList = ""; 2979 String pacFileUrl = ""; 2980 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2981 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2982 if (!proxyProperties.isValid()) { 2983 if (DBG) 2984 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2985 return; 2986 } 2987 mGlobalProxy = new ProxyInfo(proxyProperties); 2988 host = mGlobalProxy.getHost(); 2989 port = mGlobalProxy.getPort(); 2990 exclList = mGlobalProxy.getExclusionListAsString(); 2991 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2992 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2993 } 2994 } else { 2995 mGlobalProxy = null; 2996 } 2997 ContentResolver res = mContext.getContentResolver(); 2998 final long token = Binder.clearCallingIdentity(); 2999 try { 3000 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 3001 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 3002 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 3003 exclList); 3004 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 3005 } finally { 3006 Binder.restoreCallingIdentity(token); 3007 } 3008 3009 if (mGlobalProxy == null) { 3010 proxyProperties = mDefaultProxy; 3011 } 3012 sendProxyBroadcast(proxyProperties); 3013 } 3014 } 3015 3016 private void loadGlobalProxy() { 3017 ContentResolver res = mContext.getContentResolver(); 3018 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 3019 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 3020 String exclList = Settings.Global.getString(res, 3021 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 3022 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 3023 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 3024 ProxyInfo proxyProperties; 3025 if (!TextUtils.isEmpty(pacFileUrl)) { 3026 proxyProperties = new ProxyInfo(pacFileUrl); 3027 } else { 3028 proxyProperties = new ProxyInfo(host, port, exclList); 3029 } 3030 if (!proxyProperties.isValid()) { 3031 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3032 return; 3033 } 3034 3035 synchronized (mProxyLock) { 3036 mGlobalProxy = proxyProperties; 3037 } 3038 } 3039 } 3040 3041 public ProxyInfo getGlobalProxy() { 3042 // this information is already available as a world read/writable jvm property 3043 // so this API change wouldn't have a benifit. It also breaks the passing 3044 // of proxy info to all the JVMs. 3045 // enforceAccessPermission(); 3046 synchronized (mProxyLock) { 3047 return mGlobalProxy; 3048 } 3049 } 3050 3051 private void handleApplyDefaultProxy(ProxyInfo proxy) { 3052 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3053 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 3054 proxy = null; 3055 } 3056 synchronized (mProxyLock) { 3057 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3058 if (mDefaultProxy == proxy) return; // catches repeated nulls 3059 if (proxy != null && !proxy.isValid()) { 3060 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3061 return; 3062 } 3063 3064 // This call could be coming from the PacManager, containing the port of the local 3065 // proxy. If this new proxy matches the global proxy then copy this proxy to the 3066 // global (to get the correct local port), and send a broadcast. 3067 // TODO: Switch PacManager to have its own message to send back rather than 3068 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 3069 if ((mGlobalProxy != null) && (proxy != null) 3070 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 3071 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 3072 mGlobalProxy = proxy; 3073 sendProxyBroadcast(mGlobalProxy); 3074 return; 3075 } 3076 mDefaultProxy = proxy; 3077 3078 if (mGlobalProxy != null) return; 3079 if (!mDefaultProxyDisabled) { 3080 sendProxyBroadcast(proxy); 3081 } 3082 } 3083 } 3084 3085 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 3086 // This method gets called when any network changes proxy, but the broadcast only ever contains 3087 // the default proxy (even if it hasn't changed). 3088 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 3089 // world where an app might be bound to a non-default network. 3090 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3091 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 3092 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 3093 3094 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 3095 sendProxyBroadcast(getDefaultProxy()); 3096 } 3097 } 3098 3099 private void handleDeprecatedGlobalHttpProxy() { 3100 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3101 Settings.Global.HTTP_PROXY); 3102 if (!TextUtils.isEmpty(proxy)) { 3103 String data[] = proxy.split(":"); 3104 if (data.length == 0) { 3105 return; 3106 } 3107 3108 String proxyHost = data[0]; 3109 int proxyPort = 8080; 3110 if (data.length > 1) { 3111 try { 3112 proxyPort = Integer.parseInt(data[1]); 3113 } catch (NumberFormatException e) { 3114 return; 3115 } 3116 } 3117 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 3118 setGlobalProxy(p); 3119 } 3120 } 3121 3122 private void sendProxyBroadcast(ProxyInfo proxy) { 3123 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 3124 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3125 if (DBG) log("sending Proxy Broadcast for " + proxy); 3126 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3127 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3128 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3129 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3130 final long ident = Binder.clearCallingIdentity(); 3131 try { 3132 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3133 } finally { 3134 Binder.restoreCallingIdentity(ident); 3135 } 3136 } 3137 3138 private static class SettingsObserver extends ContentObserver { 3139 final private HashMap<Uri, Integer> mUriEventMap; 3140 final private Context mContext; 3141 final private Handler mHandler; 3142 3143 SettingsObserver(Context context, Handler handler) { 3144 super(null); 3145 mUriEventMap = new HashMap<Uri, Integer>(); 3146 mContext = context; 3147 mHandler = handler; 3148 } 3149 3150 void observe(Uri uri, int what) { 3151 mUriEventMap.put(uri, what); 3152 final ContentResolver resolver = mContext.getContentResolver(); 3153 resolver.registerContentObserver(uri, false, this); 3154 } 3155 3156 @Override 3157 public void onChange(boolean selfChange) { 3158 Slog.wtf(TAG, "Should never be reached."); 3159 } 3160 3161 @Override 3162 public void onChange(boolean selfChange, Uri uri) { 3163 final Integer what = mUriEventMap.get(uri); 3164 if (what != null) { 3165 mHandler.obtainMessage(what.intValue()).sendToTarget(); 3166 } else { 3167 loge("No matching event to send for URI=" + uri); 3168 } 3169 } 3170 } 3171 3172 private static void log(String s) { 3173 Slog.d(TAG, s); 3174 } 3175 3176 private static void loge(String s) { 3177 Slog.e(TAG, s); 3178 } 3179 3180 private static <T> T checkNotNull(T value, String message) { 3181 if (value == null) { 3182 throw new NullPointerException(message); 3183 } 3184 return value; 3185 } 3186 3187 /** 3188 * Prepare for a VPN application. 3189 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3190 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3191 * 3192 * @param oldPackage Package name of the application which currently controls VPN, which will 3193 * be replaced. If there is no such application, this should should either be 3194 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3195 * @param newPackage Package name of the application which should gain control of VPN, or 3196 * {@code null} to disable. 3197 * @param userId User for whom to prepare the new VPN. 3198 * 3199 * @hide 3200 */ 3201 @Override 3202 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3203 int userId) { 3204 enforceCrossUserPermission(userId); 3205 throwIfLockdownEnabled(); 3206 3207 synchronized(mVpns) { 3208 Vpn vpn = mVpns.get(userId); 3209 if (vpn != null) { 3210 return vpn.prepare(oldPackage, newPackage); 3211 } else { 3212 return false; 3213 } 3214 } 3215 } 3216 3217 /** 3218 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3219 * This method is used by system-privileged apps. 3220 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3221 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3222 * 3223 * @param packageName The package for which authorization state should change. 3224 * @param userId User for whom {@code packageName} is installed. 3225 * @param authorized {@code true} if this app should be able to start a VPN connection without 3226 * explicit user approval, {@code false} if not. 3227 * 3228 * @hide 3229 */ 3230 @Override 3231 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3232 enforceCrossUserPermission(userId); 3233 3234 synchronized(mVpns) { 3235 Vpn vpn = mVpns.get(userId); 3236 if (vpn != null) { 3237 vpn.setPackageAuthorization(packageName, authorized); 3238 } 3239 } 3240 } 3241 3242 /** 3243 * Configure a TUN interface and return its file descriptor. Parameters 3244 * are encoded and opaque to this class. This method is used by VpnBuilder 3245 * and not available in ConnectivityManager. Permissions are checked in 3246 * Vpn class. 3247 * @hide 3248 */ 3249 @Override 3250 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3251 throwIfLockdownEnabled(); 3252 int user = UserHandle.getUserId(Binder.getCallingUid()); 3253 synchronized(mVpns) { 3254 return mVpns.get(user).establish(config); 3255 } 3256 } 3257 3258 /** 3259 * Start legacy VPN, controlling native daemons as needed. Creates a 3260 * secondary thread to perform connection work, returning quickly. 3261 */ 3262 @Override 3263 public void startLegacyVpn(VpnProfile profile) { 3264 throwIfLockdownEnabled(); 3265 final LinkProperties egress = getActiveLinkProperties(); 3266 if (egress == null) { 3267 throw new IllegalStateException("Missing active network connection"); 3268 } 3269 int user = UserHandle.getUserId(Binder.getCallingUid()); 3270 synchronized(mVpns) { 3271 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3272 } 3273 } 3274 3275 /** 3276 * Return the information of the ongoing legacy VPN. This method is used 3277 * by VpnSettings and not available in ConnectivityManager. Permissions 3278 * are checked in Vpn class. 3279 */ 3280 @Override 3281 public LegacyVpnInfo getLegacyVpnInfo(int userId) { 3282 enforceCrossUserPermission(userId); 3283 3284 synchronized(mVpns) { 3285 return mVpns.get(userId).getLegacyVpnInfo(); 3286 } 3287 } 3288 3289 /** 3290 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3291 * and not available in ConnectivityManager. 3292 */ 3293 @Override 3294 public VpnInfo[] getAllVpnInfo() { 3295 enforceConnectivityInternalPermission(); 3296 if (mLockdownEnabled) { 3297 return new VpnInfo[0]; 3298 } 3299 3300 synchronized(mVpns) { 3301 List<VpnInfo> infoList = new ArrayList<>(); 3302 for (int i = 0; i < mVpns.size(); i++) { 3303 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3304 if (info != null) { 3305 infoList.add(info); 3306 } 3307 } 3308 return infoList.toArray(new VpnInfo[infoList.size()]); 3309 } 3310 } 3311 3312 /** 3313 * @return VPN information for accounting, or null if we can't retrieve all required 3314 * information, e.g primary underlying iface. 3315 */ 3316 @Nullable 3317 private VpnInfo createVpnInfo(Vpn vpn) { 3318 VpnInfo info = vpn.getVpnInfo(); 3319 if (info == null) { 3320 return null; 3321 } 3322 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3323 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3324 // the underlyingNetworks list. 3325 if (underlyingNetworks == null) { 3326 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3327 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3328 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3329 } 3330 } else if (underlyingNetworks.length > 0) { 3331 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3332 if (linkProperties != null) { 3333 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3334 } 3335 } 3336 return info.primaryUnderlyingIface == null ? null : info; 3337 } 3338 3339 /** 3340 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3341 * VpnDialogs and not available in ConnectivityManager. 3342 * Permissions are checked in Vpn class. 3343 * @hide 3344 */ 3345 @Override 3346 public VpnConfig getVpnConfig(int userId) { 3347 enforceCrossUserPermission(userId); 3348 synchronized(mVpns) { 3349 Vpn vpn = mVpns.get(userId); 3350 if (vpn != null) { 3351 return vpn.getVpnConfig(); 3352 } else { 3353 return null; 3354 } 3355 } 3356 } 3357 3358 @Override 3359 public boolean updateLockdownVpn() { 3360 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3361 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3362 return false; 3363 } 3364 3365 // Tear down existing lockdown if profile was removed 3366 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3367 if (mLockdownEnabled) { 3368 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3369 final VpnProfile profile = VpnProfile.decode( 3370 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3371 if (profile == null) { 3372 Slog.e(TAG, "Lockdown VPN configured invalid profile " + profileName); 3373 setLockdownTracker(null); 3374 return true; 3375 } 3376 int user = UserHandle.getUserId(Binder.getCallingUid()); 3377 synchronized(mVpns) { 3378 Vpn vpn = mVpns.get(user); 3379 if (vpn == null) { 3380 Slog.w(TAG, "VPN for user " + user + " not ready yet. Skipping lockdown"); 3381 return false; 3382 } 3383 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, vpn, profile)); 3384 } 3385 } else { 3386 setLockdownTracker(null); 3387 } 3388 3389 return true; 3390 } 3391 3392 /** 3393 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3394 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3395 */ 3396 private void setLockdownTracker(LockdownVpnTracker tracker) { 3397 // Shutdown any existing tracker 3398 final LockdownVpnTracker existing = mLockdownTracker; 3399 mLockdownTracker = null; 3400 if (existing != null) { 3401 existing.shutdown(); 3402 } 3403 3404 try { 3405 if (tracker != null) { 3406 mNetd.setFirewallEnabled(true); 3407 mNetd.setFirewallInterfaceRule("lo", true); 3408 mLockdownTracker = tracker; 3409 mLockdownTracker.init(); 3410 } else { 3411 mNetd.setFirewallEnabled(false); 3412 } 3413 } catch (RemoteException e) { 3414 // ignored; NMS lives inside system_server 3415 } 3416 } 3417 3418 private void throwIfLockdownEnabled() { 3419 if (mLockdownEnabled) { 3420 throw new IllegalStateException("Unavailable in lockdown mode"); 3421 } 3422 } 3423 3424 /** 3425 * Starts the always-on VPN {@link VpnService} for user {@param userId}, which should perform 3426 * some setup and then call {@code establish()} to connect. 3427 * 3428 * @return {@code true} if the service was started, the service was already connected, or there 3429 * was no always-on VPN to start. {@code false} otherwise. 3430 */ 3431 private boolean startAlwaysOnVpn(int userId) { 3432 synchronized (mVpns) { 3433 Vpn vpn = mVpns.get(userId); 3434 if (vpn == null) { 3435 // Shouldn't happen as all codepaths that point here should have checked the Vpn 3436 // exists already. 3437 Slog.wtf(TAG, "User " + userId + " has no Vpn configuration"); 3438 return false; 3439 } 3440 3441 return vpn.startAlwaysOnVpn(); 3442 } 3443 } 3444 3445 @Override 3446 public boolean setAlwaysOnVpnPackage(int userId, String packageName, boolean lockdown) { 3447 enforceConnectivityInternalPermission(); 3448 enforceCrossUserPermission(userId); 3449 3450 // Can't set always-on VPN if legacy VPN is already in lockdown mode. 3451 if (LockdownVpnTracker.isEnabled()) { 3452 return false; 3453 } 3454 3455 synchronized (mVpns) { 3456 Vpn vpn = mVpns.get(userId); 3457 if (vpn == null) { 3458 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3459 return false; 3460 } 3461 if (!vpn.setAlwaysOnPackage(packageName, lockdown)) { 3462 return false; 3463 } 3464 if (!startAlwaysOnVpn(userId)) { 3465 vpn.setAlwaysOnPackage(null, false); 3466 return false; 3467 } 3468 3469 vpn.saveAlwaysOnPackage(); 3470 } 3471 return true; 3472 } 3473 3474 @Override 3475 public String getAlwaysOnVpnPackage(int userId) { 3476 enforceConnectivityInternalPermission(); 3477 enforceCrossUserPermission(userId); 3478 3479 synchronized (mVpns) { 3480 Vpn vpn = mVpns.get(userId); 3481 if (vpn == null) { 3482 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3483 return null; 3484 } 3485 return vpn.getAlwaysOnPackage(); 3486 } 3487 } 3488 3489 @Override 3490 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3491 // TODO: Remove? Any reason to trigger a provisioning check? 3492 return -1; 3493 } 3494 3495 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3496 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3497 3498 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3499 Intent intent = new Intent(action); 3500 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3501 // Concatenate the range of types onto the range of NetIDs. 3502 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3503 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3504 networkType, null, pendingIntent, false); 3505 } 3506 3507 /** 3508 * Show or hide network provisioning notifications. 3509 * 3510 * We use notifications for two purposes: to notify that a network requires sign in 3511 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3512 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3513 * particular network we can display the notification type that was most recently requested. 3514 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3515 * might first display NO_INTERNET, and then when the captive portal check completes, display 3516 * SIGN_IN. 3517 * 3518 * @param id an identifier that uniquely identifies this notification. This must match 3519 * between show and hide calls. We use the NetID value but for legacy callers 3520 * we concatenate the range of types with the range of NetIDs. 3521 */ 3522 private void setProvNotificationVisibleIntent(boolean visible, int id, 3523 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent, 3524 boolean highPriority) { 3525 if (VDBG || (DBG && visible)) { 3526 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3527 + " networkType=" + getNetworkTypeName(networkType) 3528 + " extraInfo=" + extraInfo + " highPriority=" + highPriority); 3529 } 3530 3531 Resources r = Resources.getSystem(); 3532 NotificationManager notificationManager = (NotificationManager) mContext 3533 .getSystemService(Context.NOTIFICATION_SERVICE); 3534 3535 if (visible) { 3536 CharSequence title; 3537 CharSequence details; 3538 int icon; 3539 if (notifyType == NotificationType.NO_INTERNET && 3540 networkType == ConnectivityManager.TYPE_WIFI) { 3541 title = r.getString(R.string.wifi_no_internet, 0); 3542 details = r.getString(R.string.wifi_no_internet_detailed); 3543 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3544 } else if (notifyType == NotificationType.SIGN_IN) { 3545 switch (networkType) { 3546 case ConnectivityManager.TYPE_WIFI: 3547 title = r.getString(R.string.wifi_available_sign_in, 0); 3548 details = r.getString(R.string.network_available_sign_in_detailed, 3549 extraInfo); 3550 icon = R.drawable.stat_notify_wifi_in_range; 3551 break; 3552 case ConnectivityManager.TYPE_MOBILE: 3553 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3554 title = r.getString(R.string.network_available_sign_in, 0); 3555 // TODO: Change this to pull from NetworkInfo once a printable 3556 // name has been added to it 3557 details = mTelephonyManager.getNetworkOperatorName(); 3558 icon = R.drawable.stat_notify_rssi_in_range; 3559 break; 3560 default: 3561 title = r.getString(R.string.network_available_sign_in, 0); 3562 details = r.getString(R.string.network_available_sign_in_detailed, 3563 extraInfo); 3564 icon = R.drawable.stat_notify_rssi_in_range; 3565 break; 3566 } 3567 } else { 3568 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3569 + getNetworkTypeName(networkType)); 3570 return; 3571 } 3572 3573 Notification notification = new Notification.Builder(mContext) 3574 .setWhen(0) 3575 .setSmallIcon(icon) 3576 .setAutoCancel(true) 3577 .setTicker(title) 3578 .setColor(mContext.getColor( 3579 com.android.internal.R.color.system_notification_accent_color)) 3580 .setContentTitle(title) 3581 .setContentText(details) 3582 .setContentIntent(intent) 3583 .setLocalOnly(true) 3584 .setPriority(highPriority ? 3585 Notification.PRIORITY_HIGH : 3586 Notification.PRIORITY_DEFAULT) 3587 .setDefaults(highPriority ? Notification.DEFAULT_ALL : 0) 3588 .setOnlyAlertOnce(true) 3589 .build(); 3590 3591 try { 3592 notificationManager.notifyAsUser(NOTIFICATION_ID, id, notification, UserHandle.ALL); 3593 } catch (NullPointerException npe) { 3594 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3595 npe.printStackTrace(); 3596 } 3597 } else { 3598 try { 3599 notificationManager.cancelAsUser(NOTIFICATION_ID, id, UserHandle.ALL); 3600 } catch (NullPointerException npe) { 3601 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3602 npe.printStackTrace(); 3603 } 3604 } 3605 } 3606 3607 /** Location to an updatable file listing carrier provisioning urls. 3608 * An example: 3609 * 3610 * <?xml version="1.0" encoding="utf-8"?> 3611 * <provisioningUrls> 3612 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3613 * </provisioningUrls> 3614 */ 3615 private static final String PROVISIONING_URL_PATH = 3616 "/data/misc/radio/provisioning_urls.xml"; 3617 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3618 3619 /** XML tag for root element. */ 3620 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3621 /** XML tag for individual url */ 3622 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3623 /** XML attribute for mcc */ 3624 private static final String ATTR_MCC = "mcc"; 3625 /** XML attribute for mnc */ 3626 private static final String ATTR_MNC = "mnc"; 3627 3628 private String getProvisioningUrlBaseFromFile() { 3629 FileReader fileReader = null; 3630 XmlPullParser parser = null; 3631 Configuration config = mContext.getResources().getConfiguration(); 3632 3633 try { 3634 fileReader = new FileReader(mProvisioningUrlFile); 3635 parser = Xml.newPullParser(); 3636 parser.setInput(fileReader); 3637 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3638 3639 while (true) { 3640 XmlUtils.nextElement(parser); 3641 3642 String element = parser.getName(); 3643 if (element == null) break; 3644 3645 if (element.equals(TAG_PROVISIONING_URL)) { 3646 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3647 try { 3648 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3649 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3650 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3651 parser.next(); 3652 if (parser.getEventType() == XmlPullParser.TEXT) { 3653 return parser.getText(); 3654 } 3655 } 3656 } 3657 } catch (NumberFormatException e) { 3658 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3659 } 3660 } 3661 } 3662 return null; 3663 } catch (FileNotFoundException e) { 3664 loge("Carrier Provisioning Urls file not found"); 3665 } catch (XmlPullParserException e) { 3666 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3667 } catch (IOException e) { 3668 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3669 } finally { 3670 if (fileReader != null) { 3671 try { 3672 fileReader.close(); 3673 } catch (IOException e) {} 3674 } 3675 } 3676 return null; 3677 } 3678 3679 @Override 3680 public String getMobileProvisioningUrl() { 3681 enforceConnectivityInternalPermission(); 3682 String url = getProvisioningUrlBaseFromFile(); 3683 if (TextUtils.isEmpty(url)) { 3684 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3685 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3686 } else { 3687 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3688 } 3689 // populate the iccid, imei and phone number in the provisioning url. 3690 if (!TextUtils.isEmpty(url)) { 3691 String phoneNumber = mTelephonyManager.getLine1Number(); 3692 if (TextUtils.isEmpty(phoneNumber)) { 3693 phoneNumber = "0000000000"; 3694 } 3695 url = String.format(url, 3696 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3697 mTelephonyManager.getDeviceId() /* IMEI */, 3698 phoneNumber /* Phone numer */); 3699 } 3700 3701 return url; 3702 } 3703 3704 @Override 3705 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3706 String action) { 3707 enforceConnectivityInternalPermission(); 3708 final long ident = Binder.clearCallingIdentity(); 3709 try { 3710 setProvNotificationVisible(visible, networkType, action); 3711 } finally { 3712 Binder.restoreCallingIdentity(ident); 3713 } 3714 } 3715 3716 @Override 3717 public void setAirplaneMode(boolean enable) { 3718 enforceConnectivityInternalPermission(); 3719 final long ident = Binder.clearCallingIdentity(); 3720 try { 3721 final ContentResolver cr = mContext.getContentResolver(); 3722 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3723 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3724 intent.putExtra("state", enable); 3725 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3726 } finally { 3727 Binder.restoreCallingIdentity(ident); 3728 } 3729 } 3730 3731 private void onUserStart(int userId) { 3732 synchronized(mVpns) { 3733 Vpn userVpn = mVpns.get(userId); 3734 if (userVpn != null) { 3735 loge("Starting user already has a VPN"); 3736 return; 3737 } 3738 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3739 mVpns.put(userId, userVpn); 3740 3741 final ContentResolver cr = mContext.getContentResolver(); 3742 String alwaysOnPackage = Settings.Secure.getStringForUser(cr, 3743 Settings.Secure.ALWAYS_ON_VPN_APP, userId); 3744 final boolean alwaysOnLockdown = Settings.Secure.getIntForUser(cr, 3745 Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN, /* default */ 0, userId) != 0; 3746 if (alwaysOnPackage != null) { 3747 userVpn.setAlwaysOnPackage(alwaysOnPackage, alwaysOnLockdown); 3748 } 3749 } 3750 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3751 updateLockdownVpn(); 3752 } 3753 } 3754 3755 private void onUserStop(int userId) { 3756 synchronized(mVpns) { 3757 Vpn userVpn = mVpns.get(userId); 3758 if (userVpn == null) { 3759 loge("Stopped user has no VPN"); 3760 return; 3761 } 3762 userVpn.onUserStopped(); 3763 mVpns.delete(userId); 3764 } 3765 } 3766 3767 private void onUserAdded(int userId) { 3768 synchronized(mVpns) { 3769 final int vpnsSize = mVpns.size(); 3770 for (int i = 0; i < vpnsSize; i++) { 3771 Vpn vpn = mVpns.valueAt(i); 3772 vpn.onUserAdded(userId); 3773 } 3774 } 3775 } 3776 3777 private void onUserRemoved(int userId) { 3778 synchronized(mVpns) { 3779 final int vpnsSize = mVpns.size(); 3780 for (int i = 0; i < vpnsSize; i++) { 3781 Vpn vpn = mVpns.valueAt(i); 3782 vpn.onUserRemoved(userId); 3783 } 3784 } 3785 } 3786 3787 private void onUserUnlocked(int userId) { 3788 // User present may be sent because of an unlock, which might mean an unlocked keystore. 3789 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3790 updateLockdownVpn(); 3791 } else { 3792 startAlwaysOnVpn(userId); 3793 } 3794 } 3795 3796 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3797 @Override 3798 public void onReceive(Context context, Intent intent) { 3799 final String action = intent.getAction(); 3800 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3801 if (userId == UserHandle.USER_NULL) return; 3802 3803 if (Intent.ACTION_USER_STARTED.equals(action)) { 3804 onUserStart(userId); 3805 } else if (Intent.ACTION_USER_STOPPED.equals(action)) { 3806 onUserStop(userId); 3807 } else if (Intent.ACTION_USER_ADDED.equals(action)) { 3808 onUserAdded(userId); 3809 } else if (Intent.ACTION_USER_REMOVED.equals(action)) { 3810 onUserRemoved(userId); 3811 } else if (Intent.ACTION_USER_UNLOCKED.equals(action)) { 3812 onUserUnlocked(userId); 3813 } 3814 } 3815 }; 3816 3817 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3818 new HashMap<Messenger, NetworkFactoryInfo>(); 3819 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3820 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3821 3822 private static final int MAX_NETWORK_REQUESTS_PER_UID = 100; 3823 // Map from UID to number of NetworkRequests that UID has filed. 3824 @GuardedBy("mUidToNetworkRequestCount") 3825 private final SparseIntArray mUidToNetworkRequestCount = new SparseIntArray(); 3826 3827 private static class NetworkFactoryInfo { 3828 public final String name; 3829 public final Messenger messenger; 3830 public final AsyncChannel asyncChannel; 3831 3832 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3833 this.name = name; 3834 this.messenger = messenger; 3835 this.asyncChannel = asyncChannel; 3836 } 3837 } 3838 3839 /** 3840 * Tracks info about the requester. 3841 * Also used to notice when the calling process dies so we can self-expire 3842 */ 3843 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3844 final NetworkRequest request; 3845 final PendingIntent mPendingIntent; 3846 boolean mPendingIntentSent; 3847 private final IBinder mBinder; 3848 final int mPid; 3849 final int mUid; 3850 final Messenger messenger; 3851 3852 NetworkRequestInfo(NetworkRequest r, PendingIntent pi) { 3853 request = r; 3854 ensureRequestHasType(); 3855 mPendingIntent = pi; 3856 messenger = null; 3857 mBinder = null; 3858 mPid = getCallingPid(); 3859 mUid = getCallingUid(); 3860 enforceRequestCountLimit(); 3861 } 3862 3863 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder) { 3864 super(); 3865 messenger = m; 3866 request = r; 3867 ensureRequestHasType(); 3868 mBinder = binder; 3869 mPid = getCallingPid(); 3870 mUid = getCallingUid(); 3871 mPendingIntent = null; 3872 enforceRequestCountLimit(); 3873 3874 try { 3875 mBinder.linkToDeath(this, 0); 3876 } catch (RemoteException e) { 3877 binderDied(); 3878 } 3879 } 3880 3881 private void ensureRequestHasType() { 3882 if (request.type == NetworkRequest.Type.NONE) { 3883 throw new IllegalArgumentException( 3884 "All NetworkRequests in ConnectivityService must have a type"); 3885 } 3886 } 3887 3888 private void enforceRequestCountLimit() { 3889 synchronized (mUidToNetworkRequestCount) { 3890 int networkRequests = mUidToNetworkRequestCount.get(mUid, 0) + 1; 3891 if (networkRequests >= MAX_NETWORK_REQUESTS_PER_UID) { 3892 throw new IllegalArgumentException("Too many NetworkRequests filed"); 3893 } 3894 mUidToNetworkRequestCount.put(mUid, networkRequests); 3895 } 3896 } 3897 3898 void unlinkDeathRecipient() { 3899 if (mBinder != null) { 3900 mBinder.unlinkToDeath(this, 0); 3901 } 3902 } 3903 3904 public void binderDied() { 3905 log("ConnectivityService NetworkRequestInfo binderDied(" + 3906 request + ", " + mBinder + ")"); 3907 releaseNetworkRequest(request); 3908 } 3909 3910 public String toString() { 3911 return "uid/pid:" + mUid + "/" + mPid + " " + request + 3912 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3913 } 3914 } 3915 3916 private void ensureRequestableCapabilities(NetworkCapabilities networkCapabilities) { 3917 final String badCapability = networkCapabilities.describeFirstNonRequestableCapability(); 3918 if (badCapability != null) { 3919 throw new IllegalArgumentException("Cannot request network with " + badCapability); 3920 } 3921 } 3922 3923 private ArrayList<Integer> getSignalStrengthThresholds(NetworkAgentInfo nai) { 3924 final SortedSet<Integer> thresholds = new TreeSet(); 3925 synchronized (nai) { 3926 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3927 if (nri.request.networkCapabilities.hasSignalStrength() && 3928 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 3929 thresholds.add(nri.request.networkCapabilities.getSignalStrength()); 3930 } 3931 } 3932 } 3933 return new ArrayList<Integer>(thresholds); 3934 } 3935 3936 private void updateSignalStrengthThresholds( 3937 NetworkAgentInfo nai, String reason, NetworkRequest request) { 3938 ArrayList<Integer> thresholdsArray = getSignalStrengthThresholds(nai); 3939 Bundle thresholds = new Bundle(); 3940 thresholds.putIntegerArrayList("thresholds", thresholdsArray); 3941 3942 if (VDBG || (DBG && !"CONNECT".equals(reason))) { 3943 String detail; 3944 if (request != null && request.networkCapabilities.hasSignalStrength()) { 3945 detail = reason + " " + request.networkCapabilities.getSignalStrength(); 3946 } else { 3947 detail = reason; 3948 } 3949 log(String.format("updateSignalStrengthThresholds: %s, sending %s to %s", 3950 detail, Arrays.toString(thresholdsArray.toArray()), nai.name())); 3951 } 3952 3953 nai.asyncChannel.sendMessage( 3954 android.net.NetworkAgent.CMD_SET_SIGNAL_STRENGTH_THRESHOLDS, 3955 0, 0, thresholds); 3956 } 3957 3958 @Override 3959 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3960 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3961 final NetworkRequest.Type type = (networkCapabilities == null) 3962 ? NetworkRequest.Type.TRACK_DEFAULT 3963 : NetworkRequest.Type.REQUEST; 3964 // If the requested networkCapabilities is null, take them instead from 3965 // the default network request. This allows callers to keep track of 3966 // the system default network. 3967 if (type == NetworkRequest.Type.TRACK_DEFAULT) { 3968 networkCapabilities = new NetworkCapabilities(mDefaultRequest.networkCapabilities); 3969 enforceAccessPermission(); 3970 } else { 3971 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3972 enforceNetworkRequestPermissions(networkCapabilities); 3973 } 3974 enforceMeteredApnPolicy(networkCapabilities); 3975 ensureRequestableCapabilities(networkCapabilities); 3976 3977 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3978 throw new IllegalArgumentException("Bad timeout specified"); 3979 } 3980 3981 if (NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER 3982 .equals(networkCapabilities.getNetworkSpecifier())) { 3983 throw new IllegalArgumentException("Invalid network specifier - must not be '" 3984 + NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER + "'"); 3985 } 3986 3987 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3988 nextNetworkRequestId(), type); 3989 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder); 3990 if (DBG) log("requestNetwork for " + nri); 3991 3992 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3993 if (timeoutMs > 0) { 3994 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3995 nri), timeoutMs); 3996 } 3997 return networkRequest; 3998 } 3999 4000 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 4001 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 4002 enforceConnectivityInternalPermission(); 4003 } else { 4004 enforceChangePermission(); 4005 } 4006 } 4007 4008 @Override 4009 public boolean requestBandwidthUpdate(Network network) { 4010 enforceAccessPermission(); 4011 NetworkAgentInfo nai = null; 4012 if (network == null) { 4013 return false; 4014 } 4015 synchronized (mNetworkForNetId) { 4016 nai = mNetworkForNetId.get(network.netId); 4017 } 4018 if (nai != null) { 4019 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 4020 return true; 4021 } 4022 return false; 4023 } 4024 4025 private boolean isSystem(int uid) { 4026 return uid < Process.FIRST_APPLICATION_UID; 4027 } 4028 4029 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 4030 final int uid = Binder.getCallingUid(); 4031 if (isSystem(uid)) { 4032 return; 4033 } 4034 // if UID is restricted, don't allow them to bring up metered APNs 4035 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 4036 final int uidRules; 4037 synchronized(mRulesLock) { 4038 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 4039 } 4040 if (mRestrictBackground && (uidRules & RULE_ALLOW_METERED) == 0 4041 && (uidRules & RULE_TEMPORARY_ALLOW_METERED) == 0) { 4042 // we could silently fail or we can filter the available nets to only give 4043 // them those they have access to. Chose the more useful option. 4044 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 4045 } 4046 } 4047 } 4048 4049 @Override 4050 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 4051 PendingIntent operation) { 4052 checkNotNull(operation, "PendingIntent cannot be null."); 4053 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4054 enforceNetworkRequestPermissions(networkCapabilities); 4055 enforceMeteredApnPolicy(networkCapabilities); 4056 ensureRequestableCapabilities(networkCapabilities); 4057 4058 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 4059 nextNetworkRequestId(), NetworkRequest.Type.REQUEST); 4060 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation); 4061 if (DBG) log("pendingRequest for " + nri); 4062 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 4063 nri)); 4064 return networkRequest; 4065 } 4066 4067 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 4068 mHandler.sendMessageDelayed( 4069 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 4070 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 4071 } 4072 4073 @Override 4074 public void releasePendingNetworkRequest(PendingIntent operation) { 4075 checkNotNull(operation, "PendingIntent cannot be null."); 4076 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 4077 getCallingUid(), 0, operation)); 4078 } 4079 4080 // In order to implement the compatibility measure for pre-M apps that call 4081 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 4082 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 4083 // This ensures it has permission to do so. 4084 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 4085 if (nc == null) { 4086 return false; 4087 } 4088 int[] transportTypes = nc.getTransportTypes(); 4089 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 4090 return false; 4091 } 4092 try { 4093 mContext.enforceCallingOrSelfPermission( 4094 android.Manifest.permission.ACCESS_WIFI_STATE, 4095 "ConnectivityService"); 4096 } catch (SecurityException e) { 4097 return false; 4098 } 4099 return true; 4100 } 4101 4102 @Override 4103 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 4104 Messenger messenger, IBinder binder) { 4105 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 4106 enforceAccessPermission(); 4107 } 4108 4109 NetworkRequest networkRequest = new NetworkRequest( 4110 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId(), 4111 NetworkRequest.Type.LISTEN); 4112 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder); 4113 if (VDBG) log("listenForNetwork for " + nri); 4114 4115 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4116 return networkRequest; 4117 } 4118 4119 @Override 4120 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 4121 PendingIntent operation) { 4122 checkNotNull(operation, "PendingIntent cannot be null."); 4123 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 4124 enforceAccessPermission(); 4125 } 4126 4127 NetworkRequest networkRequest = new NetworkRequest( 4128 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId(), 4129 NetworkRequest.Type.LISTEN); 4130 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation); 4131 if (VDBG) log("pendingListenForNetwork for " + nri); 4132 4133 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4134 } 4135 4136 @Override 4137 public void releaseNetworkRequest(NetworkRequest networkRequest) { 4138 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 4139 0, networkRequest)); 4140 } 4141 4142 @Override 4143 public void registerNetworkFactory(Messenger messenger, String name) { 4144 enforceConnectivityInternalPermission(); 4145 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 4146 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 4147 } 4148 4149 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 4150 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 4151 mNetworkFactoryInfos.put(nfi.messenger, nfi); 4152 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 4153 } 4154 4155 @Override 4156 public void unregisterNetworkFactory(Messenger messenger) { 4157 enforceConnectivityInternalPermission(); 4158 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 4159 } 4160 4161 private void handleUnregisterNetworkFactory(Messenger messenger) { 4162 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 4163 if (nfi == null) { 4164 loge("Failed to find Messenger in unregisterNetworkFactory"); 4165 return; 4166 } 4167 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 4168 } 4169 4170 /** 4171 * NetworkAgentInfo supporting a request by requestId. 4172 * These have already been vetted (their Capabilities satisfy the request) 4173 * and the are the highest scored network available. 4174 * the are keyed off the Requests requestId. 4175 */ 4176 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 4177 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 4178 new SparseArray<NetworkAgentInfo>(); 4179 4180 // NOTE: Accessed on multiple threads, must be synchronized on itself. 4181 @GuardedBy("mNetworkForNetId") 4182 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 4183 new SparseArray<NetworkAgentInfo>(); 4184 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 4185 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 4186 // there may not be a strict 1:1 correlation between the two. 4187 @GuardedBy("mNetworkForNetId") 4188 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 4189 4190 // NetworkAgentInfo keyed off its connecting messenger 4191 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 4192 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 4193 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 4194 new HashMap<Messenger, NetworkAgentInfo>(); 4195 4196 @GuardedBy("mBlockedAppUids") 4197 private final HashSet<Integer> mBlockedAppUids = new HashSet(); 4198 4199 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 4200 private final NetworkRequest mDefaultRequest; 4201 4202 // Request used to optionally keep mobile data active even when higher 4203 // priority networks like Wi-Fi are active. 4204 private final NetworkRequest mDefaultMobileDataRequest; 4205 4206 private NetworkAgentInfo getDefaultNetwork() { 4207 return mNetworkForRequestId.get(mDefaultRequest.requestId); 4208 } 4209 4210 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 4211 return nai == getDefaultNetwork(); 4212 } 4213 4214 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 4215 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 4216 int currentScore, NetworkMisc networkMisc) { 4217 enforceConnectivityInternalPermission(); 4218 4219 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 4220 // satisfies mDefaultRequest. 4221 final NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 4222 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 4223 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 4224 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest, this); 4225 synchronized (this) { 4226 nai.networkMonitor.systemReady = mSystemReady; 4227 } 4228 addValidationLogs(nai.networkMonitor.getValidationLogs(), nai.network, 4229 networkInfo.getExtraInfo()); 4230 if (DBG) log("registerNetworkAgent " + nai); 4231 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 4232 return nai.network.netId; 4233 } 4234 4235 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 4236 if (VDBG) log("Got NetworkAgent Messenger"); 4237 mNetworkAgentInfos.put(na.messenger, na); 4238 synchronized (mNetworkForNetId) { 4239 mNetworkForNetId.put(na.network.netId, na); 4240 } 4241 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 4242 NetworkInfo networkInfo = na.networkInfo; 4243 na.networkInfo = null; 4244 updateNetworkInfo(na, networkInfo); 4245 } 4246 4247 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 4248 LinkProperties newLp = networkAgent.linkProperties; 4249 int netId = networkAgent.network.netId; 4250 4251 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 4252 // we do anything else, make sure its LinkProperties are accurate. 4253 if (networkAgent.clatd != null) { 4254 networkAgent.clatd.fixupLinkProperties(oldLp); 4255 } 4256 4257 updateInterfaces(newLp, oldLp, netId); 4258 updateMtu(newLp, oldLp); 4259 // TODO - figure out what to do for clat 4260// for (LinkProperties lp : newLp.getStackedLinks()) { 4261// updateMtu(lp, null); 4262// } 4263 updateTcpBufferSizes(networkAgent); 4264 4265 updateRoutes(newLp, oldLp, netId); 4266 updateDnses(newLp, oldLp, netId); 4267 4268 updateClat(newLp, oldLp, networkAgent); 4269 if (isDefaultNetwork(networkAgent)) { 4270 handleApplyDefaultProxy(newLp.getHttpProxy()); 4271 } else { 4272 updateProxy(newLp, oldLp, networkAgent); 4273 } 4274 // TODO - move this check to cover the whole function 4275 if (!Objects.equals(newLp, oldLp)) { 4276 notifyIfacesChangedForNetworkStats(); 4277 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 4278 } 4279 4280 mKeepaliveTracker.handleCheckKeepalivesStillValid(networkAgent); 4281 } 4282 4283 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 4284 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 4285 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 4286 4287 if (!wasRunningClat && shouldRunClat) { 4288 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 4289 nai.clatd.start(); 4290 } else if (wasRunningClat && !shouldRunClat) { 4291 nai.clatd.stop(); 4292 } 4293 } 4294 4295 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 4296 CompareResult<String> interfaceDiff = new CompareResult<String>(); 4297 if (oldLp != null) { 4298 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 4299 } else if (newLp != null) { 4300 interfaceDiff.added = newLp.getAllInterfaceNames(); 4301 } 4302 for (String iface : interfaceDiff.added) { 4303 try { 4304 if (DBG) log("Adding iface " + iface + " to network " + netId); 4305 mNetd.addInterfaceToNetwork(iface, netId); 4306 } catch (Exception e) { 4307 loge("Exception adding interface: " + e); 4308 } 4309 } 4310 for (String iface : interfaceDiff.removed) { 4311 try { 4312 if (DBG) log("Removing iface " + iface + " from network " + netId); 4313 mNetd.removeInterfaceFromNetwork(iface, netId); 4314 } catch (Exception e) { 4315 loge("Exception removing interface: " + e); 4316 } 4317 } 4318 } 4319 4320 /** 4321 * Have netd update routes from oldLp to newLp. 4322 * @return true if routes changed between oldLp and newLp 4323 */ 4324 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 4325 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 4326 if (oldLp != null) { 4327 routeDiff = oldLp.compareAllRoutes(newLp); 4328 } else if (newLp != null) { 4329 routeDiff.added = newLp.getAllRoutes(); 4330 } 4331 4332 // add routes before removing old in case it helps with continuous connectivity 4333 4334 // do this twice, adding non-nexthop routes first, then routes they are dependent on 4335 for (RouteInfo route : routeDiff.added) { 4336 if (route.hasGateway()) continue; 4337 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4338 try { 4339 mNetd.addRoute(netId, route); 4340 } catch (Exception e) { 4341 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 4342 loge("Exception in addRoute for non-gateway: " + e); 4343 } 4344 } 4345 } 4346 for (RouteInfo route : routeDiff.added) { 4347 if (route.hasGateway() == false) continue; 4348 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4349 try { 4350 mNetd.addRoute(netId, route); 4351 } catch (Exception e) { 4352 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4353 loge("Exception in addRoute for gateway: " + e); 4354 } 4355 } 4356 } 4357 4358 for (RouteInfo route : routeDiff.removed) { 4359 if (VDBG) log("Removing Route [" + route + "] from network " + netId); 4360 try { 4361 mNetd.removeRoute(netId, route); 4362 } catch (Exception e) { 4363 loge("Exception in removeRoute: " + e); 4364 } 4365 } 4366 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4367 } 4368 4369 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId) { 4370 if (oldLp != null && newLp.isIdenticalDnses(oldLp)) { 4371 return; // no updating necessary 4372 } 4373 4374 Collection<InetAddress> dnses = newLp.getDnsServers(); 4375 if (DBG) log("Setting DNS servers for network " + netId + " to " + dnses); 4376 try { 4377 mNetd.setDnsConfigurationForNetwork( 4378 netId, NetworkUtils.makeStrings(dnses), newLp.getDomains()); 4379 } catch (Exception e) { 4380 loge("Exception in setDnsConfigurationForNetwork: " + e); 4381 } 4382 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 4383 if (defaultNai != null && defaultNai.network.netId == netId) { 4384 setDefaultDnsSystemProperties(dnses); 4385 } 4386 flushVmDnsCache(); 4387 } 4388 4389 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4390 int last = 0; 4391 for (InetAddress dns : dnses) { 4392 ++last; 4393 String key = "net.dns" + last; 4394 String value = dns.getHostAddress(); 4395 SystemProperties.set(key, value); 4396 } 4397 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4398 String key = "net.dns" + i; 4399 SystemProperties.set(key, ""); 4400 } 4401 mNumDnsEntries = last; 4402 } 4403 4404 /** 4405 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 4406 * augmented with any stateful capabilities implied from {@code networkAgent} 4407 * (e.g., validated status and captive portal status). 4408 * 4409 * @param nai the network having its capabilities updated. 4410 * @param networkCapabilities the new network capabilities. 4411 */ 4412 private void updateCapabilities(NetworkAgentInfo nai, NetworkCapabilities networkCapabilities) { 4413 // Don't modify caller's NetworkCapabilities. 4414 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4415 if (nai.lastValidated) { 4416 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4417 } else { 4418 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4419 } 4420 if (nai.lastCaptivePortalDetected) { 4421 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4422 } else { 4423 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4424 } 4425 if (!Objects.equals(nai.networkCapabilities, networkCapabilities)) { 4426 final int oldScore = nai.getCurrentScore(); 4427 if (nai.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) != 4428 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED)) { 4429 try { 4430 mNetd.setNetworkPermission(nai.network.netId, 4431 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) ? 4432 null : NetworkManagementService.PERMISSION_SYSTEM); 4433 } catch (RemoteException e) { 4434 loge("Exception in setNetworkPermission: " + e); 4435 } 4436 } 4437 synchronized (nai) { 4438 nai.networkCapabilities = networkCapabilities; 4439 } 4440 rematchAllNetworksAndRequests(nai, oldScore); 4441 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 4442 } 4443 } 4444 4445 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4446 for (int i = 0; i < nai.numNetworkRequests(); i++) { 4447 NetworkRequest nr = nai.requestAt(i); 4448 // Don't send listening requests to factories. b/17393458 4449 if (!nr.isRequest()) continue; 4450 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4451 } 4452 } 4453 4454 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4455 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4456 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4457 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4458 networkRequest); 4459 } 4460 } 4461 4462 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4463 int notificationType) { 4464 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4465 Intent intent = new Intent(); 4466 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4467 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4468 nri.mPendingIntentSent = true; 4469 sendIntent(nri.mPendingIntent, intent); 4470 } 4471 // else not handled 4472 } 4473 4474 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4475 mPendingIntentWakeLock.acquire(); 4476 try { 4477 if (DBG) log("Sending " + pendingIntent); 4478 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4479 } catch (PendingIntent.CanceledException e) { 4480 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4481 mPendingIntentWakeLock.release(); 4482 releasePendingNetworkRequest(pendingIntent); 4483 } 4484 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4485 } 4486 4487 @Override 4488 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4489 String resultData, Bundle resultExtras) { 4490 if (DBG) log("Finished sending " + pendingIntent); 4491 mPendingIntentWakeLock.release(); 4492 // Release with a delay so the receiving client has an opportunity to put in its 4493 // own request. 4494 releasePendingNetworkRequestWithDelay(pendingIntent); 4495 } 4496 4497 private void callCallbackForRequest(NetworkRequestInfo nri, 4498 NetworkAgentInfo networkAgent, int notificationType) { 4499 if (nri.messenger == null) return; // Default request has no msgr 4500 Bundle bundle = new Bundle(); 4501 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4502 new NetworkRequest(nri.request)); 4503 Message msg = Message.obtain(); 4504 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4505 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4506 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4507 } 4508 switch (notificationType) { 4509 case ConnectivityManager.CALLBACK_LOSING: { 4510 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4511 break; 4512 } 4513 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4514 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4515 new NetworkCapabilities(networkAgent.networkCapabilities)); 4516 break; 4517 } 4518 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4519 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4520 new LinkProperties(networkAgent.linkProperties)); 4521 break; 4522 } 4523 } 4524 msg.what = notificationType; 4525 msg.setData(bundle); 4526 try { 4527 if (VDBG) { 4528 log("sending notification " + notifyTypeToName(notificationType) + 4529 " for " + nri.request); 4530 } 4531 nri.messenger.send(msg); 4532 } catch (RemoteException e) { 4533 // may occur naturally in the race of binder death. 4534 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4535 } 4536 } 4537 4538 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4539 if (nai.numRequestNetworkRequests() != 0) { 4540 for (int i = 0; i < nai.numNetworkRequests(); i++) { 4541 NetworkRequest nr = nai.requestAt(i); 4542 // Ignore listening requests. 4543 if (!nr.isRequest()) continue; 4544 loge("Dead network still had at least " + nr); 4545 break; 4546 } 4547 } 4548 nai.asyncChannel.disconnect(); 4549 } 4550 4551 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4552 if (oldNetwork == null) { 4553 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4554 return; 4555 } 4556 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4557 teardownUnneededNetwork(oldNetwork); 4558 } 4559 4560 private void makeDefault(NetworkAgentInfo newNetwork) { 4561 if (DBG) log("Switching to new default network: " + newNetwork); 4562 setupDataActivityTracking(newNetwork); 4563 try { 4564 mNetd.setDefaultNetId(newNetwork.network.netId); 4565 } catch (Exception e) { 4566 loge("Exception setting default network :" + e); 4567 } 4568 notifyLockdownVpn(newNetwork); 4569 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4570 updateTcpBufferSizes(newNetwork); 4571 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4572 } 4573 4574 // Handles a network appearing or improving its score. 4575 // 4576 // - Evaluates all current NetworkRequests that can be 4577 // satisfied by newNetwork, and reassigns to newNetwork 4578 // any such requests for which newNetwork is the best. 4579 // 4580 // - Lingers any validated Networks that as a result are no longer 4581 // needed. A network is needed if it is the best network for 4582 // one or more NetworkRequests, or if it is a VPN. 4583 // 4584 // - Tears down newNetwork if it just became validated 4585 // but turns out to be unneeded. 4586 // 4587 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4588 // networks that have no chance (i.e. even if validated) 4589 // of becoming the highest scoring network. 4590 // 4591 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4592 // it does not remove NetworkRequests that other Networks could better satisfy. 4593 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4594 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4595 // as it performs better by a factor of the number of Networks. 4596 // 4597 // @param newNetwork is the network to be matched against NetworkRequests. 4598 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4599 // performed to tear down unvalidated networks that have no chance (i.e. even if 4600 // validated) of becoming the highest scoring network. 4601 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, 4602 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4603 if (!newNetwork.everConnected) return; 4604 boolean keep = newNetwork.isVPN(); 4605 boolean isNewDefault = false; 4606 NetworkAgentInfo oldDefaultNetwork = null; 4607 if (VDBG) log("rematching " + newNetwork.name()); 4608 // Find and migrate to this Network any NetworkRequests for 4609 // which this network is now the best. 4610 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4611 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4612 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4613 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4614 final NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4615 final boolean satisfies = newNetwork.satisfies(nri.request); 4616 if (newNetwork == currentNetwork && satisfies) { 4617 if (VDBG) { 4618 log("Network " + newNetwork.name() + " was already satisfying" + 4619 " request " + nri.request.requestId + ". No change."); 4620 } 4621 keep = true; 4622 continue; 4623 } 4624 4625 // check if it satisfies the NetworkCapabilities 4626 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4627 if (satisfies) { 4628 if (!nri.request.isRequest()) { 4629 // This is not a request, it's a callback listener. 4630 // Add it to newNetwork regardless of score. 4631 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4632 continue; 4633 } 4634 4635 // next check if it's better than any current network we're using for 4636 // this request 4637 if (VDBG) { 4638 log("currentScore = " + 4639 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4640 ", newScore = " + newNetwork.getCurrentScore()); 4641 } 4642 if (currentNetwork == null || 4643 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4644 if (VDBG) log("rematch for " + newNetwork.name()); 4645 if (currentNetwork != null) { 4646 if (VDBG) log(" accepting network in place of " + currentNetwork.name()); 4647 currentNetwork.removeRequest(nri.request.requestId); 4648 currentNetwork.networkLingered.add(nri.request); 4649 affectedNetworks.add(currentNetwork); 4650 } else { 4651 if (VDBG) log(" accepting network in place of null"); 4652 } 4653 unlinger(newNetwork); 4654 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4655 if (!newNetwork.addRequest(nri.request)) { 4656 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4657 } 4658 addedRequests.add(nri); 4659 keep = true; 4660 // Tell NetworkFactories about the new score, so they can stop 4661 // trying to connect if they know they cannot match it. 4662 // TODO - this could get expensive if we have alot of requests for this 4663 // network. Think about if there is a way to reduce this. Push 4664 // netid->request mapping to each factory? 4665 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4666 if (mDefaultRequest.requestId == nri.request.requestId) { 4667 isNewDefault = true; 4668 oldDefaultNetwork = currentNetwork; 4669 } 4670 } 4671 } else if (newNetwork.isSatisfyingRequest(nri.request.requestId)) { 4672 // If "newNetwork" is listed as satisfying "nri" but no longer satisfies "nri", 4673 // mark it as no longer satisfying "nri". Because networks are processed by 4674 // rematchAllNetworkAndRequests() in descending score order, "currentNetwork" will 4675 // match "newNetwork" before this loop will encounter a "currentNetwork" with higher 4676 // score than "newNetwork" and where "currentNetwork" no longer satisfies "nri". 4677 // This means this code doesn't have to handle the case where "currentNetwork" no 4678 // longer satisfies "nri" when "currentNetwork" does not equal "newNetwork". 4679 if (DBG) { 4680 log("Network " + newNetwork.name() + " stopped satisfying" + 4681 " request " + nri.request.requestId); 4682 } 4683 newNetwork.removeRequest(nri.request.requestId); 4684 if (currentNetwork == newNetwork) { 4685 mNetworkForRequestId.remove(nri.request.requestId); 4686 sendUpdatedScoreToFactories(nri.request, 0); 4687 } else { 4688 if (nri.request.isRequest()) { 4689 Slog.wtf(TAG, "BUG: Removing request " + nri.request.requestId + " from " + 4690 newNetwork.name() + 4691 " without updating mNetworkForRequestId or factories!"); 4692 } 4693 } 4694 // TODO: technically, sending CALLBACK_LOST here is 4695 // incorrect if nri is a request (not a listen) and there 4696 // is a replacement network currently connected that can 4697 // satisfy it. However, the only capability that can both 4698 // a) be requested and b) change is NET_CAPABILITY_TRUSTED, 4699 // so this code is only incorrect for a network that loses 4700 // the TRUSTED capability, which is a rare case. 4701 callCallbackForRequest(nri, newNetwork, ConnectivityManager.CALLBACK_LOST); 4702 } 4703 } 4704 // Linger any networks that are no longer needed. 4705 for (NetworkAgentInfo nai : affectedNetworks) { 4706 if (nai.lingering) { 4707 // Already lingered. Nothing to do. This can only happen if "nai" is in 4708 // "affectedNetworks" twice. The reasoning being that to get added to 4709 // "affectedNetworks", "nai" must have been satisfying a NetworkRequest 4710 // (i.e. not lingered) so it could have only been lingered by this loop. 4711 // unneeded(nai) will be false and we'll call unlinger() below which would 4712 // be bad, so handle it here. 4713 } else if (unneeded(nai)) { 4714 linger(nai); 4715 } else { 4716 // Clear nai.networkLingered we might have added above. 4717 unlinger(nai); 4718 } 4719 } 4720 if (isNewDefault) { 4721 // Notify system services that this network is up. 4722 makeDefault(newNetwork); 4723 // Log 0 -> X and Y -> X default network transitions, where X is the new default. 4724 logDefaultNetworkEvent(newNetwork, oldDefaultNetwork); 4725 synchronized (ConnectivityService.this) { 4726 // have a new default network, release the transition wakelock in 4727 // a second if it's held. The second pause is to allow apps 4728 // to reconnect over the new network 4729 if (mNetTransitionWakeLock.isHeld()) { 4730 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4731 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4732 mNetTransitionWakeLockSerialNumber, 0), 4733 1000); 4734 } 4735 } 4736 } 4737 4738 // do this after the default net is switched, but 4739 // before LegacyTypeTracker sends legacy broadcasts 4740 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4741 4742 if (isNewDefault) { 4743 // Maintain the illusion: since the legacy API only 4744 // understands one network at a time, we must pretend 4745 // that the current default network disconnected before 4746 // the new one connected. 4747 if (oldDefaultNetwork != null) { 4748 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4749 oldDefaultNetwork, true); 4750 } 4751 mDefaultInetConditionPublished = newNetwork.lastValidated ? 100 : 0; 4752 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4753 notifyLockdownVpn(newNetwork); 4754 } 4755 4756 if (keep) { 4757 // Notify battery stats service about this network, both the normal 4758 // interface and any stacked links. 4759 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4760 try { 4761 final IBatteryStats bs = BatteryStatsService.getService(); 4762 final int type = newNetwork.networkInfo.getType(); 4763 4764 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4765 bs.noteNetworkInterfaceType(baseIface, type); 4766 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4767 final String stackedIface = stacked.getInterfaceName(); 4768 bs.noteNetworkInterfaceType(stackedIface, type); 4769 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4770 } 4771 } catch (RemoteException ignored) { 4772 } 4773 4774 // This has to happen after the notifyNetworkCallbacks as that tickles each 4775 // ConnectivityManager instance so that legacy requests correctly bind dns 4776 // requests to this network. The legacy users are listening for this bcast 4777 // and will generally do a dns request so they can ensureRouteToHost and if 4778 // they do that before the callbacks happen they'll use the default network. 4779 // 4780 // TODO: Is there still a race here? We send the broadcast 4781 // after sending the callback, but if the app can receive the 4782 // broadcast before the callback, it might still break. 4783 // 4784 // This *does* introduce a race where if the user uses the new api 4785 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4786 // they may get old info. Reverse this after the old startUsing api is removed. 4787 // This is on top of the multiple intent sequencing referenced in the todo above. 4788 for (int i = 0; i < newNetwork.numNetworkRequests(); i++) { 4789 NetworkRequest nr = newNetwork.requestAt(i); 4790 if (nr.legacyType != TYPE_NONE && nr.isRequest()) { 4791 // legacy type tracker filters out repeat adds 4792 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4793 } 4794 } 4795 4796 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4797 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4798 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4799 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4800 if (newNetwork.isVPN()) { 4801 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4802 } 4803 } 4804 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4805 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4806 if (unneeded(nai)) { 4807 if (DBG) log("Reaping " + nai.name()); 4808 teardownUnneededNetwork(nai); 4809 } 4810 } 4811 } 4812 } 4813 4814 /** 4815 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4816 * being disconnected. 4817 * @param changed If only one Network's score or capabilities have been modified since the last 4818 * time this function was called, pass this Network in this argument, otherwise pass 4819 * null. 4820 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4821 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4822 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4823 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4824 * network's score. 4825 */ 4826 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4827 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4828 // to avoid the slowness. It is not simply enough to process just "changed", for 4829 // example in the case where "changed"'s score decreases and another network should begin 4830 // satifying a NetworkRequest that "changed" currently satisfies. 4831 4832 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4833 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4834 // rematchNetworkAndRequests() handles. 4835 if (changed != null && oldScore < changed.getCurrentScore()) { 4836 rematchNetworkAndRequests(changed, ReapUnvalidatedNetworks.REAP); 4837 } else { 4838 final NetworkAgentInfo[] nais = mNetworkAgentInfos.values().toArray( 4839 new NetworkAgentInfo[mNetworkAgentInfos.size()]); 4840 // Rematch higher scoring networks first to prevent requests first matching a lower 4841 // scoring network and then a higher scoring network, which could produce multiple 4842 // callbacks and inadvertently unlinger networks. 4843 Arrays.sort(nais); 4844 for (NetworkAgentInfo nai : nais) { 4845 rematchNetworkAndRequests(nai, 4846 // Only reap the last time through the loop. Reaping before all rematching 4847 // is complete could incorrectly teardown a network that hasn't yet been 4848 // rematched. 4849 (nai != nais[nais.length-1]) ? ReapUnvalidatedNetworks.DONT_REAP 4850 : ReapUnvalidatedNetworks.REAP); 4851 } 4852 } 4853 } 4854 4855 private void updateInetCondition(NetworkAgentInfo nai) { 4856 // Don't bother updating until we've graduated to validated at least once. 4857 if (!nai.everValidated) return; 4858 // For now only update icons for default connection. 4859 // TODO: Update WiFi and cellular icons separately. b/17237507 4860 if (!isDefaultNetwork(nai)) return; 4861 4862 int newInetCondition = nai.lastValidated ? 100 : 0; 4863 // Don't repeat publish. 4864 if (newInetCondition == mDefaultInetConditionPublished) return; 4865 4866 mDefaultInetConditionPublished = newInetCondition; 4867 sendInetConditionBroadcast(nai.networkInfo); 4868 } 4869 4870 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4871 if (mLockdownTracker != null) { 4872 if (nai != null && nai.isVPN()) { 4873 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4874 } else { 4875 mLockdownTracker.onNetworkInfoChanged(); 4876 } 4877 } 4878 } 4879 4880 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4881 NetworkInfo.State state = newInfo.getState(); 4882 NetworkInfo oldInfo = null; 4883 final int oldScore = networkAgent.getCurrentScore(); 4884 synchronized (networkAgent) { 4885 oldInfo = networkAgent.networkInfo; 4886 networkAgent.networkInfo = newInfo; 4887 } 4888 notifyLockdownVpn(networkAgent); 4889 4890 if (oldInfo != null && oldInfo.getState() == state) { 4891 if (oldInfo.isRoaming() != newInfo.isRoaming()) { 4892 if (VDBG) log("roaming status changed, notifying NetworkStatsService"); 4893 notifyIfacesChangedForNetworkStats(); 4894 } else if (VDBG) log("ignoring duplicate network state non-change"); 4895 // In either case, no further work should be needed. 4896 return; 4897 } 4898 if (DBG) { 4899 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4900 (oldInfo == null ? "null" : oldInfo.getState()) + 4901 " to " + state); 4902 } 4903 4904 if (!networkAgent.created 4905 && (state == NetworkInfo.State.CONNECTED 4906 || (state == NetworkInfo.State.CONNECTING && networkAgent.isVPN()))) { 4907 try { 4908 // This should never fail. Specifying an already in use NetID will cause failure. 4909 if (networkAgent.isVPN()) { 4910 mNetd.createVirtualNetwork(networkAgent.network.netId, 4911 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4912 (networkAgent.networkMisc == null || 4913 !networkAgent.networkMisc.allowBypass)); 4914 } else { 4915 mNetd.createPhysicalNetwork(networkAgent.network.netId, 4916 networkAgent.networkCapabilities.hasCapability( 4917 NET_CAPABILITY_NOT_RESTRICTED) ? 4918 null : NetworkManagementService.PERMISSION_SYSTEM); 4919 } 4920 } catch (Exception e) { 4921 loge("Error creating network " + networkAgent.network.netId + ": " 4922 + e.getMessage()); 4923 return; 4924 } 4925 networkAgent.created = true; 4926 } 4927 4928 if (!networkAgent.everConnected && state == NetworkInfo.State.CONNECTED) { 4929 networkAgent.everConnected = true; 4930 4931 updateLinkProperties(networkAgent, null); 4932 notifyIfacesChangedForNetworkStats(); 4933 4934 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4935 scheduleUnvalidatedPrompt(networkAgent); 4936 4937 if (networkAgent.isVPN()) { 4938 // Temporarily disable the default proxy (not global). 4939 synchronized (mProxyLock) { 4940 if (!mDefaultProxyDisabled) { 4941 mDefaultProxyDisabled = true; 4942 if (mGlobalProxy == null && mDefaultProxy != null) { 4943 sendProxyBroadcast(null); 4944 } 4945 } 4946 } 4947 // TODO: support proxy per network. 4948 } 4949 4950 // Whether a particular NetworkRequest listen should cause signal strength thresholds to 4951 // be communicated to a particular NetworkAgent depends only on the network's immutable, 4952 // capabilities, so it only needs to be done once on initial connect, not every time the 4953 // network's capabilities change. Note that we do this before rematching the network, 4954 // so we could decide to tear it down immediately afterwards. That's fine though - on 4955 // disconnection NetworkAgents should stop any signal strength monitoring they have been 4956 // doing. 4957 updateSignalStrengthThresholds(networkAgent, "CONNECT", null); 4958 4959 // Consider network even though it is not yet validated. 4960 rematchNetworkAndRequests(networkAgent, ReapUnvalidatedNetworks.REAP); 4961 4962 // This has to happen after matching the requests, because callbacks are just requests. 4963 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4964 } else if (state == NetworkInfo.State.DISCONNECTED) { 4965 networkAgent.asyncChannel.disconnect(); 4966 if (networkAgent.isVPN()) { 4967 synchronized (mProxyLock) { 4968 if (mDefaultProxyDisabled) { 4969 mDefaultProxyDisabled = false; 4970 if (mGlobalProxy == null && mDefaultProxy != null) { 4971 sendProxyBroadcast(mDefaultProxy); 4972 } 4973 } 4974 } 4975 } 4976 } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) || 4977 state == NetworkInfo.State.SUSPENDED) { 4978 // going into or coming out of SUSPEND: rescore and notify 4979 if (networkAgent.getCurrentScore() != oldScore) { 4980 rematchAllNetworksAndRequests(networkAgent, oldScore); 4981 } 4982 notifyNetworkCallbacks(networkAgent, (state == NetworkInfo.State.SUSPENDED ? 4983 ConnectivityManager.CALLBACK_SUSPENDED : 4984 ConnectivityManager.CALLBACK_RESUMED)); 4985 mLegacyTypeTracker.update(networkAgent); 4986 } 4987 } 4988 4989 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4990 if (VDBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4991 if (score < 0) { 4992 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4993 "). Bumping score to min of 0"); 4994 score = 0; 4995 } 4996 4997 final int oldScore = nai.getCurrentScore(); 4998 nai.setCurrentScore(score); 4999 5000 rematchAllNetworksAndRequests(nai, oldScore); 5001 5002 sendUpdatedScoreToFactories(nai); 5003 } 5004 5005 // notify only this one new request of the current state 5006 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 5007 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 5008 // TODO - read state from monitor to decide what to send. 5009// if (nai.networkMonitor.isLingering()) { 5010// notifyType = NetworkCallbacks.LOSING; 5011// } else if (nai.networkMonitor.isEvaluating()) { 5012// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 5013// } 5014 if (nri.mPendingIntent == null) { 5015 callCallbackForRequest(nri, nai, notifyType); 5016 } else { 5017 sendPendingIntentForRequest(nri, nai, notifyType); 5018 } 5019 } 5020 5021 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, DetailedState state, int type) { 5022 // The NetworkInfo we actually send out has no bearing on the real 5023 // state of affairs. For example, if the default connection is mobile, 5024 // and a request for HIPRI has just gone away, we need to pretend that 5025 // HIPRI has just disconnected. So we need to set the type to HIPRI and 5026 // the state to DISCONNECTED, even though the network is of type MOBILE 5027 // and is still connected. 5028 NetworkInfo info = new NetworkInfo(nai.networkInfo); 5029 info.setType(type); 5030 if (state != DetailedState.DISCONNECTED) { 5031 info.setDetailedState(state, null, info.getExtraInfo()); 5032 sendConnectedBroadcast(info); 5033 } else { 5034 info.setDetailedState(state, info.getReason(), info.getExtraInfo()); 5035 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 5036 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 5037 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 5038 if (info.isFailover()) { 5039 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 5040 nai.networkInfo.setFailover(false); 5041 } 5042 if (info.getReason() != null) { 5043 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 5044 } 5045 if (info.getExtraInfo() != null) { 5046 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 5047 } 5048 NetworkAgentInfo newDefaultAgent = null; 5049 if (nai.isSatisfyingRequest(mDefaultRequest.requestId)) { 5050 newDefaultAgent = getDefaultNetwork(); 5051 if (newDefaultAgent != null) { 5052 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 5053 newDefaultAgent.networkInfo); 5054 } else { 5055 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 5056 } 5057 } 5058 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 5059 mDefaultInetConditionPublished); 5060 sendStickyBroadcast(intent); 5061 if (newDefaultAgent != null) { 5062 sendConnectedBroadcast(newDefaultAgent.networkInfo); 5063 } 5064 } 5065 } 5066 5067 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 5068 if (VDBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 5069 for (int i = 0; i < networkAgent.numNetworkRequests(); i++) { 5070 NetworkRequest nr = networkAgent.requestAt(i); 5071 NetworkRequestInfo nri = mNetworkRequests.get(nr); 5072 if (VDBG) log(" sending notification for " + nr); 5073 if (nri.mPendingIntent == null) { 5074 callCallbackForRequest(nri, networkAgent, notifyType); 5075 } else { 5076 sendPendingIntentForRequest(nri, networkAgent, notifyType); 5077 } 5078 } 5079 } 5080 5081 private String notifyTypeToName(int notifyType) { 5082 switch (notifyType) { 5083 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 5084 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 5085 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 5086 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 5087 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 5088 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 5089 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 5090 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 5091 } 5092 return "UNKNOWN"; 5093 } 5094 5095 /** 5096 * Notify NetworkStatsService that the set of active ifaces has changed, or that one of the 5097 * properties tracked by NetworkStatsService on an active iface has changed. 5098 */ 5099 private void notifyIfacesChangedForNetworkStats() { 5100 try { 5101 mStatsService.forceUpdateIfaces(); 5102 } catch (Exception ignored) { 5103 } 5104 } 5105 5106 @Override 5107 public boolean addVpnAddress(String address, int prefixLength) { 5108 throwIfLockdownEnabled(); 5109 int user = UserHandle.getUserId(Binder.getCallingUid()); 5110 synchronized (mVpns) { 5111 return mVpns.get(user).addAddress(address, prefixLength); 5112 } 5113 } 5114 5115 @Override 5116 public boolean removeVpnAddress(String address, int prefixLength) { 5117 throwIfLockdownEnabled(); 5118 int user = UserHandle.getUserId(Binder.getCallingUid()); 5119 synchronized (mVpns) { 5120 return mVpns.get(user).removeAddress(address, prefixLength); 5121 } 5122 } 5123 5124 @Override 5125 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 5126 throwIfLockdownEnabled(); 5127 int user = UserHandle.getUserId(Binder.getCallingUid()); 5128 boolean success; 5129 synchronized (mVpns) { 5130 success = mVpns.get(user).setUnderlyingNetworks(networks); 5131 } 5132 if (success) { 5133 notifyIfacesChangedForNetworkStats(); 5134 } 5135 return success; 5136 } 5137 5138 @Override 5139 public String getCaptivePortalServerUrl() { 5140 return NetworkMonitor.getCaptivePortalServerUrl(mContext); 5141 } 5142 5143 @Override 5144 public void startNattKeepalive(Network network, int intervalSeconds, Messenger messenger, 5145 IBinder binder, String srcAddr, int srcPort, String dstAddr) { 5146 enforceKeepalivePermission(); 5147 mKeepaliveTracker.startNattKeepalive( 5148 getNetworkAgentInfoForNetwork(network), 5149 intervalSeconds, messenger, binder, 5150 srcAddr, srcPort, dstAddr, ConnectivityManager.PacketKeepalive.NATT_PORT); 5151 } 5152 5153 @Override 5154 public void stopKeepalive(Network network, int slot) { 5155 mHandler.sendMessage(mHandler.obtainMessage( 5156 NetworkAgent.CMD_STOP_PACKET_KEEPALIVE, slot, PacketKeepalive.SUCCESS, network)); 5157 } 5158 5159 @Override 5160 public void factoryReset() { 5161 enforceConnectivityInternalPermission(); 5162 5163 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 5164 return; 5165 } 5166 5167 final int userId = UserHandle.getCallingUserId(); 5168 5169 // Turn airplane mode off 5170 setAirplaneMode(false); 5171 5172 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 5173 // Untether 5174 for (String tether : getTetheredIfaces()) { 5175 untether(tether); 5176 } 5177 } 5178 5179 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 5180 // Remove always-on package 5181 synchronized (mVpns) { 5182 final String alwaysOnPackage = getAlwaysOnVpnPackage(userId); 5183 if (alwaysOnPackage != null) { 5184 setAlwaysOnVpnPackage(userId, null, false); 5185 setVpnPackageAuthorization(alwaysOnPackage, userId, false); 5186 } 5187 } 5188 5189 // Turn VPN off 5190 VpnConfig vpnConfig = getVpnConfig(userId); 5191 if (vpnConfig != null) { 5192 if (vpnConfig.legacy) { 5193 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 5194 } else { 5195 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 5196 // in the future without user intervention. 5197 setVpnPackageAuthorization(vpnConfig.user, userId, false); 5198 5199 prepareVpn(null, VpnConfig.LEGACY_VPN, userId); 5200 } 5201 } 5202 } 5203 } 5204 5205 @VisibleForTesting 5206 public NetworkMonitor createNetworkMonitor(Context context, Handler handler, 5207 NetworkAgentInfo nai, NetworkRequest defaultRequest) { 5208 return new NetworkMonitor(context, handler, nai, defaultRequest); 5209 } 5210 5211 private void logDefaultNetworkEvent(NetworkAgentInfo newNai, NetworkAgentInfo prevNai) { 5212 int newNetid = NETID_UNSET; 5213 int prevNetid = NETID_UNSET; 5214 int[] transports = new int[0]; 5215 boolean hadIPv4 = false; 5216 boolean hadIPv6 = false; 5217 5218 if (newNai != null) { 5219 newNetid = newNai.network.netId; 5220 transports = newNai.networkCapabilities.getTransportTypes(); 5221 } 5222 if (prevNai != null) { 5223 prevNetid = prevNai.network.netId; 5224 final LinkProperties lp = prevNai.linkProperties; 5225 hadIPv4 = lp.hasIPv4Address() && lp.hasIPv4DefaultRoute(); 5226 hadIPv6 = lp.hasGlobalIPv6Address() && lp.hasIPv6DefaultRoute(); 5227 } 5228 5229 mMetricsLog.log(new DefaultNetworkEvent(newNetid, transports, prevNetid, hadIPv4, hadIPv6)); 5230 } 5231 5232 private void logNetworkEvent(NetworkAgentInfo nai, int evtype) { 5233 mMetricsLog.log(new NetworkEvent(nai.network.netId, evtype)); 5234 } 5235} 5236