ConnectivityService.java revision 99d5d3d7759883119665d928d110edb14df44ecc
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server; 18 19import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE; 20import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; 21import static android.net.ConnectivityManager.NETID_UNSET; 22import static android.net.ConnectivityManager.TYPE_NONE; 23import static android.net.ConnectivityManager.TYPE_VPN; 24import static android.net.ConnectivityManager.getNetworkTypeName; 25import static android.net.ConnectivityManager.isNetworkTypeValid; 26import static android.net.NetworkCapabilities.NET_CAPABILITY_CAPTIVE_PORTAL; 27import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET; 28import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED; 29import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED; 30import static android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED; 31import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 32import static android.net.NetworkPolicyManager.RULE_ALLOW_METERED; 33import static android.net.NetworkPolicyManager.MASK_METERED_NETWORKS; 34import static android.net.NetworkPolicyManager.MASK_ALL_NETWORKS; 35import static android.net.NetworkPolicyManager.RULE_NONE; 36import static android.net.NetworkPolicyManager.RULE_REJECT_ALL; 37import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 38import static android.net.NetworkPolicyManager.RULE_TEMPORARY_ALLOW_METERED; 39import static android.net.NetworkPolicyManager.uidRulesToString; 40 41import android.annotation.Nullable; 42import android.app.BroadcastOptions; 43import android.app.Notification; 44import android.app.NotificationManager; 45import android.app.PendingIntent; 46import android.content.BroadcastReceiver; 47import android.content.ContentResolver; 48import android.content.Context; 49import android.content.Intent; 50import android.content.IntentFilter; 51import android.content.pm.PackageManager; 52import android.content.res.Configuration; 53import android.content.res.Resources; 54import android.database.ContentObserver; 55import android.net.ConnectivityManager; 56import android.net.ConnectivityManager.PacketKeepalive; 57import android.net.IConnectivityManager; 58import android.net.INetworkManagementEventObserver; 59import android.net.INetworkPolicyListener; 60import android.net.INetworkPolicyManager; 61import android.net.INetworkStatsService; 62import android.net.LinkProperties; 63import android.net.LinkProperties.CompareResult; 64import android.net.Network; 65import android.net.NetworkAgent; 66import android.net.NetworkCapabilities; 67import android.net.NetworkConfig; 68import android.net.NetworkInfo; 69import android.net.NetworkInfo.DetailedState; 70import android.net.NetworkMisc; 71import android.net.NetworkQuotaInfo; 72import android.net.NetworkRequest; 73import android.net.NetworkState; 74import android.net.NetworkUtils; 75import android.net.Proxy; 76import android.net.ProxyInfo; 77import android.net.RouteInfo; 78import android.net.UidRange; 79import android.net.Uri; 80import android.net.metrics.DefaultNetworkEvent; 81import android.net.metrics.NetworkEvent; 82import android.os.Binder; 83import android.os.Build; 84import android.os.Bundle; 85import android.os.FileUtils; 86import android.os.Handler; 87import android.os.HandlerThread; 88import android.os.IBinder; 89import android.os.INetworkManagementService; 90import android.os.Looper; 91import android.os.Message; 92import android.os.Messenger; 93import android.os.ParcelFileDescriptor; 94import android.os.PowerManager; 95import android.os.Process; 96import android.os.RemoteException; 97import android.os.ResultReceiver; 98import android.os.SystemProperties; 99import android.os.UserHandle; 100import android.os.UserManager; 101import android.provider.Settings; 102import android.security.Credentials; 103import android.security.KeyStore; 104import android.telephony.TelephonyManager; 105import android.text.TextUtils; 106import android.util.ArraySet; 107import android.util.LocalLog; 108import android.util.LocalLog.ReadOnlyLocalLog; 109import android.util.Log; 110import android.util.Pair; 111import android.util.Slog; 112import android.util.SparseArray; 113import android.util.SparseBooleanArray; 114import android.util.SparseIntArray; 115import android.util.Xml; 116 117import com.android.internal.R; 118import com.android.internal.annotations.GuardedBy; 119import com.android.internal.annotations.VisibleForTesting; 120import com.android.internal.app.IBatteryStats; 121import com.android.internal.net.LegacyVpnInfo; 122import com.android.internal.net.NetworkStatsFactory; 123import com.android.internal.net.VpnConfig; 124import com.android.internal.net.VpnInfo; 125import com.android.internal.net.VpnProfile; 126import com.android.internal.util.AsyncChannel; 127import com.android.internal.util.IndentingPrintWriter; 128import com.android.internal.util.MessageUtils; 129import com.android.internal.util.XmlUtils; 130import com.android.server.am.BatteryStatsService; 131import com.android.server.connectivity.DataConnectionStats; 132import com.android.server.connectivity.KeepaliveTracker; 133import com.android.server.connectivity.Nat464Xlat; 134import com.android.server.connectivity.NetworkAgentInfo; 135import com.android.server.connectivity.NetworkDiagnostics; 136import com.android.server.connectivity.NetworkMonitor; 137import com.android.server.connectivity.PacManager; 138import com.android.server.connectivity.PermissionMonitor; 139import com.android.server.connectivity.Tethering; 140import com.android.server.connectivity.Vpn; 141import com.android.server.net.BaseNetworkObserver; 142import com.android.server.net.LockdownVpnTracker; 143 144import com.google.android.collect.Lists; 145 146import org.xmlpull.v1.XmlPullParser; 147import org.xmlpull.v1.XmlPullParserException; 148 149import java.io.File; 150import java.io.FileDescriptor; 151import java.io.FileNotFoundException; 152import java.io.FileReader; 153import java.io.IOException; 154import java.io.PrintWriter; 155import java.net.Inet4Address; 156import java.net.InetAddress; 157import java.net.UnknownHostException; 158import java.util.ArrayDeque; 159import java.util.ArrayList; 160import java.util.Arrays; 161import java.util.Collection; 162import java.util.HashMap; 163import java.util.HashSet; 164import java.util.List; 165import java.util.Map; 166import java.util.Objects; 167import java.util.SortedSet; 168import java.util.TreeSet; 169 170/** 171 * @hide 172 */ 173public class ConnectivityService extends IConnectivityManager.Stub 174 implements PendingIntent.OnFinished { 175 private static final String TAG = "ConnectivityService"; 176 177 private static final boolean DBG = true; 178 private static final boolean VDBG = false; 179 180 private static final boolean LOGD_RULES = false; 181 private static final boolean LOGD_BLOCKED_NETWORKINFO = true; 182 183 // TODO: create better separation between radio types and network types 184 185 // how long to wait before switching back to a radio's default network 186 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 187 // system property that can override the above value 188 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 189 "android.telephony.apn-restore"; 190 191 // How long to wait before putting up a "This network doesn't have an Internet connection, 192 // connect anyway?" dialog after the user selects a network that doesn't validate. 193 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 194 195 // How long to delay to removal of a pending intent based request. 196 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 197 private final int mReleasePendingIntentDelayMs; 198 199 private Tethering mTethering; 200 201 private final PermissionMonitor mPermissionMonitor; 202 203 private KeyStore mKeyStore; 204 205 @GuardedBy("mVpns") 206 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 207 208 private boolean mLockdownEnabled; 209 private LockdownVpnTracker mLockdownTracker; 210 211 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 212 private Object mRulesLock = new Object(); 213 /** Currently active network rules by UID. */ 214 @GuardedBy("mRulesLock") 215 private SparseIntArray mUidRules = new SparseIntArray(); 216 /** Set of ifaces that are costly. */ 217 @GuardedBy("mRulesLock") 218 private ArraySet<String> mMeteredIfaces = new ArraySet<>(); 219 /** Flag indicating if background data is restricted. */ 220 @GuardedBy("mRulesLock") 221 private boolean mRestrictBackground; 222 223 final private Context mContext; 224 private int mNetworkPreference; 225 // 0 is full bad, 100 is full good 226 private int mDefaultInetConditionPublished = 0; 227 228 private int mNumDnsEntries; 229 230 private boolean mTestMode; 231 private static ConnectivityService sServiceInstance; 232 233 private INetworkManagementService mNetd; 234 private INetworkStatsService mStatsService; 235 private INetworkPolicyManager mPolicyManager; 236 237 private String mCurrentTcpBufferSizes; 238 239 private static final int ENABLED = 1; 240 private static final int DISABLED = 0; 241 242 private static final SparseArray<String> sMagicDecoderRing = MessageUtils.findMessageNames( 243 new Class[] { AsyncChannel.class, ConnectivityService.class, NetworkAgent.class }); 244 245 private enum ReapUnvalidatedNetworks { 246 // Tear down networks that have no chance (e.g. even if validated) of becoming 247 // the highest scoring network satisfying a NetworkRequest. This should be passed when 248 // all networks have been rematched against all NetworkRequests. 249 REAP, 250 // Don't reap networks. This should be passed when some networks have not yet been 251 // rematched against all NetworkRequests. 252 DONT_REAP 253 }; 254 255 /** 256 * used internally to change our mobile data enabled flag 257 */ 258 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 259 260 /** 261 * used internally to clear a wakelock when transitioning 262 * from one net to another. Clear happens when we get a new 263 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 264 * after a timeout if no network is found (typically 1 min). 265 */ 266 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 267 268 /** 269 * used internally to reload global proxy settings 270 */ 271 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 272 273 /** 274 * PAC manager has received new port. 275 */ 276 private static final int EVENT_PROXY_HAS_CHANGED = 16; 277 278 /** 279 * used internally when registering NetworkFactories 280 * obj = NetworkFactoryInfo 281 */ 282 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 283 284 /** 285 * used internally when registering NetworkAgents 286 * obj = Messenger 287 */ 288 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 289 290 /** 291 * used to add a network request 292 * includes a NetworkRequestInfo 293 */ 294 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 295 296 /** 297 * indicates a timeout period is over - check if we had a network yet or not 298 * and if not, call the timeout calback (but leave the request live until they 299 * cancel it. 300 * includes a NetworkRequestInfo 301 */ 302 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 303 304 /** 305 * used to add a network listener - no request 306 * includes a NetworkRequestInfo 307 */ 308 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 309 310 /** 311 * used to remove a network request, either a listener or a real request 312 * arg1 = UID of caller 313 * obj = NetworkRequest 314 */ 315 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 316 317 /** 318 * used internally when registering NetworkFactories 319 * obj = Messenger 320 */ 321 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 322 323 /** 324 * used internally to expire a wakelock when transitioning 325 * from one net to another. Expire happens when we fail to find 326 * a new network (typically after 1 minute) - 327 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 328 * a replacement network. 329 */ 330 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 331 332 /** 333 * Used internally to indicate the system is ready. 334 */ 335 private static final int EVENT_SYSTEM_READY = 25; 336 337 /** 338 * used to add a network request with a pending intent 339 * obj = NetworkRequestInfo 340 */ 341 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 342 343 /** 344 * used to remove a pending intent and its associated network request. 345 * arg1 = UID of caller 346 * obj = PendingIntent 347 */ 348 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 349 350 /** 351 * used to specify whether a network should be used even if unvalidated. 352 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 353 * arg2 = whether to remember this choice in the future (1 or 0) 354 * obj = network 355 */ 356 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 357 358 /** 359 * used to ask the user to confirm a connection to an unvalidated network. 360 * obj = network 361 */ 362 private static final int EVENT_PROMPT_UNVALIDATED = 29; 363 364 /** 365 * used internally to (re)configure mobile data always-on settings. 366 */ 367 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 368 369 /** 370 * used to add a network listener with a pending intent 371 * obj = NetworkRequestInfo 372 */ 373 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 374 375 /** Handler thread used for both of the handlers below. */ 376 @VisibleForTesting 377 protected final HandlerThread mHandlerThread; 378 /** Handler used for internal events. */ 379 final private InternalHandler mHandler; 380 /** Handler used for incoming {@link NetworkStateTracker} events. */ 381 final private NetworkStateTrackerHandler mTrackerHandler; 382 383 private boolean mSystemReady; 384 private Intent mInitialBroadcast; 385 386 private PowerManager.WakeLock mNetTransitionWakeLock; 387 private String mNetTransitionWakeLockCausedBy = ""; 388 private int mNetTransitionWakeLockSerialNumber; 389 private int mNetTransitionWakeLockTimeout; 390 private final PowerManager.WakeLock mPendingIntentWakeLock; 391 392 // used in DBG mode to track inet condition reports 393 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 394 private ArrayList mInetLog; 395 396 // track the current default http proxy - tell the world if we get a new one (real change) 397 private volatile ProxyInfo mDefaultProxy = null; 398 private Object mProxyLock = new Object(); 399 private boolean mDefaultProxyDisabled = false; 400 401 // track the global proxy. 402 private ProxyInfo mGlobalProxy = null; 403 404 private PacManager mPacManager = null; 405 406 final private SettingsObserver mSettingsObserver; 407 408 private UserManager mUserManager; 409 410 NetworkConfig[] mNetConfigs; 411 int mNetworksDefined; 412 413 // the set of network types that can only be enabled by system/sig apps 414 List mProtectedNetworks; 415 416 private DataConnectionStats mDataConnectionStats; 417 418 TelephonyManager mTelephonyManager; 419 420 private KeepaliveTracker mKeepaliveTracker; 421 422 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 423 private final static int MIN_NET_ID = 100; // some reserved marks 424 private final static int MAX_NET_ID = 65535; 425 private int mNextNetId = MIN_NET_ID; 426 427 // sequence number of NetworkRequests 428 private int mNextNetworkRequestId = 1; 429 430 // NetworkRequest activity String log entries. 431 private static final int MAX_NETWORK_REQUEST_LOGS = 20; 432 private final LocalLog mNetworkRequestInfoLogs = new LocalLog(MAX_NETWORK_REQUEST_LOGS); 433 434 // Array of <Network,ReadOnlyLocalLogs> tracking network validation and results 435 private static final int MAX_VALIDATION_LOGS = 10; 436 private final ArrayDeque<Pair<Network,ReadOnlyLocalLog>> mValidationLogs = 437 new ArrayDeque<Pair<Network,ReadOnlyLocalLog>>(MAX_VALIDATION_LOGS); 438 439 private void addValidationLogs(ReadOnlyLocalLog log, Network network) { 440 synchronized(mValidationLogs) { 441 while (mValidationLogs.size() >= MAX_VALIDATION_LOGS) { 442 mValidationLogs.removeLast(); 443 } 444 mValidationLogs.addFirst(new Pair(network, log)); 445 } 446 } 447 448 /** 449 * Implements support for the legacy "one network per network type" model. 450 * 451 * We used to have a static array of NetworkStateTrackers, one for each 452 * network type, but that doesn't work any more now that we can have, 453 * for example, more that one wifi network. This class stores all the 454 * NetworkAgentInfo objects that support a given type, but the legacy 455 * API will only see the first one. 456 * 457 * It serves two main purposes: 458 * 459 * 1. Provide information about "the network for a given type" (since this 460 * API only supports one). 461 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 462 * the first network for a given type changes, or if the default network 463 * changes. 464 */ 465 private class LegacyTypeTracker { 466 467 private static final boolean DBG = true; 468 private static final boolean VDBG = false; 469 470 /** 471 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 472 * Each list holds references to all NetworkAgentInfos that are used to 473 * satisfy requests for that network type. 474 * 475 * This array is built out at startup such that an unsupported network 476 * doesn't get an ArrayList instance, making this a tristate: 477 * unsupported, supported but not active and active. 478 * 479 * The actual lists are populated when we scan the network types that 480 * are supported on this device. 481 */ 482 private ArrayList<NetworkAgentInfo> mTypeLists[]; 483 484 public LegacyTypeTracker() { 485 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 486 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 487 } 488 489 public void addSupportedType(int type) { 490 if (mTypeLists[type] != null) { 491 throw new IllegalStateException( 492 "legacy list for type " + type + "already initialized"); 493 } 494 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 495 } 496 497 public boolean isTypeSupported(int type) { 498 return isNetworkTypeValid(type) && mTypeLists[type] != null; 499 } 500 501 public NetworkAgentInfo getNetworkForType(int type) { 502 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 503 return mTypeLists[type].get(0); 504 } else { 505 return null; 506 } 507 } 508 509 private void maybeLogBroadcast(NetworkAgentInfo nai, DetailedState state, int type, 510 boolean isDefaultNetwork) { 511 if (DBG) { 512 log("Sending " + state + 513 " broadcast for type " + type + " " + nai.name() + 514 " isDefaultNetwork=" + isDefaultNetwork); 515 } 516 } 517 518 /** Adds the given network to the specified legacy type list. */ 519 public void add(int type, NetworkAgentInfo nai) { 520 if (!isTypeSupported(type)) { 521 return; // Invalid network type. 522 } 523 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 524 525 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 526 if (list.contains(nai)) { 527 return; 528 } 529 530 list.add(nai); 531 532 // Send a broadcast if this is the first network of its type or if it's the default. 533 final boolean isDefaultNetwork = isDefaultNetwork(nai); 534 if (list.size() == 1 || isDefaultNetwork) { 535 maybeLogBroadcast(nai, DetailedState.CONNECTED, type, isDefaultNetwork); 536 sendLegacyNetworkBroadcast(nai, DetailedState.CONNECTED, type); 537 } 538 } 539 540 /** Removes the given network from the specified legacy type list. */ 541 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 542 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 543 if (list == null || list.isEmpty()) { 544 return; 545 } 546 547 final boolean wasFirstNetwork = list.get(0).equals(nai); 548 549 if (!list.remove(nai)) { 550 return; 551 } 552 553 final DetailedState state = DetailedState.DISCONNECTED; 554 555 if (wasFirstNetwork || wasDefault) { 556 maybeLogBroadcast(nai, state, type, wasDefault); 557 sendLegacyNetworkBroadcast(nai, state, type); 558 } 559 560 if (!list.isEmpty() && wasFirstNetwork) { 561 if (DBG) log("Other network available for type " + type + 562 ", sending connected broadcast"); 563 final NetworkAgentInfo replacement = list.get(0); 564 maybeLogBroadcast(replacement, state, type, isDefaultNetwork(replacement)); 565 sendLegacyNetworkBroadcast(replacement, state, type); 566 } 567 } 568 569 /** Removes the given network from all legacy type lists. */ 570 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 571 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 572 for (int type = 0; type < mTypeLists.length; type++) { 573 remove(type, nai, wasDefault); 574 } 575 } 576 577 // send out another legacy broadcast - currently only used for suspend/unsuspend 578 // toggle 579 public void update(NetworkAgentInfo nai) { 580 final boolean isDefault = isDefaultNetwork(nai); 581 final DetailedState state = nai.networkInfo.getDetailedState(); 582 for (int type = 0; type < mTypeLists.length; type++) { 583 final ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 584 final boolean contains = (list != null && list.contains(nai)); 585 final boolean isFirst = (list != null && list.size() > 0 && nai == list.get(0)); 586 if (isFirst || (contains && isDefault)) { 587 maybeLogBroadcast(nai, state, type, isDefault); 588 sendLegacyNetworkBroadcast(nai, state, type); 589 } 590 } 591 } 592 593 private String naiToString(NetworkAgentInfo nai) { 594 String name = (nai != null) ? nai.name() : "null"; 595 String state = (nai.networkInfo != null) ? 596 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 597 "???/???"; 598 return name + " " + state; 599 } 600 601 public void dump(IndentingPrintWriter pw) { 602 pw.println("mLegacyTypeTracker:"); 603 pw.increaseIndent(); 604 pw.print("Supported types:"); 605 for (int type = 0; type < mTypeLists.length; type++) { 606 if (mTypeLists[type] != null) pw.print(" " + type); 607 } 608 pw.println(); 609 pw.println("Current state:"); 610 pw.increaseIndent(); 611 for (int type = 0; type < mTypeLists.length; type++) { 612 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 613 for (NetworkAgentInfo nai : mTypeLists[type]) { 614 pw.println(type + " " + naiToString(nai)); 615 } 616 } 617 pw.decreaseIndent(); 618 pw.decreaseIndent(); 619 pw.println(); 620 } 621 } 622 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 623 624 @VisibleForTesting 625 protected HandlerThread createHandlerThread() { 626 return new HandlerThread("ConnectivityServiceThread"); 627 } 628 629 public ConnectivityService(Context context, INetworkManagementService netManager, 630 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 631 if (DBG) log("ConnectivityService starting up"); 632 633 mDefaultRequest = createInternetRequestForTransport(-1); 634 NetworkRequestInfo defaultNRI = new NetworkRequestInfo(null, mDefaultRequest, 635 new Binder(), NetworkRequestType.REQUEST); 636 mNetworkRequests.put(mDefaultRequest, defaultNRI); 637 mNetworkRequestInfoLogs.log("REGISTER " + defaultNRI); 638 639 mDefaultMobileDataRequest = createInternetRequestForTransport( 640 NetworkCapabilities.TRANSPORT_CELLULAR); 641 642 mHandlerThread = createHandlerThread(); 643 mHandlerThread.start(); 644 mHandler = new InternalHandler(mHandlerThread.getLooper()); 645 mTrackerHandler = new NetworkStateTrackerHandler(mHandlerThread.getLooper()); 646 647 // setup our unique device name 648 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 649 String id = Settings.Secure.getString(context.getContentResolver(), 650 Settings.Secure.ANDROID_ID); 651 if (id != null && id.length() > 0) { 652 String name = new String("android-").concat(id); 653 SystemProperties.set("net.hostname", name); 654 } 655 } 656 657 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 658 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 659 660 mContext = checkNotNull(context, "missing Context"); 661 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 662 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 663 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 664 mKeyStore = KeyStore.getInstance(); 665 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 666 667 try { 668 mPolicyManager.setConnectivityListener(mPolicyListener); 669 mRestrictBackground = mPolicyManager.getRestrictBackground(); 670 } catch (RemoteException e) { 671 // ouch, no rules updates means some processes may never get network 672 loge("unable to register INetworkPolicyListener" + e); 673 } 674 675 final PowerManager powerManager = (PowerManager) context.getSystemService( 676 Context.POWER_SERVICE); 677 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 678 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 679 com.android.internal.R.integer.config_networkTransitionTimeout); 680 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 681 682 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 683 684 // TODO: What is the "correct" way to do determine if this is a wifi only device? 685 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 686 log("wifiOnly=" + wifiOnly); 687 String[] naStrings = context.getResources().getStringArray( 688 com.android.internal.R.array.networkAttributes); 689 for (String naString : naStrings) { 690 try { 691 NetworkConfig n = new NetworkConfig(naString); 692 if (VDBG) log("naString=" + naString + " config=" + n); 693 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 694 loge("Error in networkAttributes - ignoring attempt to define type " + 695 n.type); 696 continue; 697 } 698 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 699 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 700 n.type); 701 continue; 702 } 703 if (mNetConfigs[n.type] != null) { 704 loge("Error in networkAttributes - ignoring attempt to redefine type " + 705 n.type); 706 continue; 707 } 708 mLegacyTypeTracker.addSupportedType(n.type); 709 710 mNetConfigs[n.type] = n; 711 mNetworksDefined++; 712 } catch(Exception e) { 713 // ignore it - leave the entry null 714 } 715 } 716 717 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 718 if (mNetConfigs[TYPE_VPN] == null) { 719 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 720 // don't need to add TYPE_VPN to mNetConfigs. 721 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 722 mNetworksDefined++; // used only in the log() statement below. 723 } 724 725 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 726 727 mProtectedNetworks = new ArrayList<Integer>(); 728 int[] protectedNetworks = context.getResources().getIntArray( 729 com.android.internal.R.array.config_protectedNetworks); 730 for (int p : protectedNetworks) { 731 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 732 mProtectedNetworks.add(p); 733 } else { 734 if (DBG) loge("Ignoring protectedNetwork " + p); 735 } 736 } 737 738 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 739 && SystemProperties.get("ro.build.type").equals("eng"); 740 741 mTethering = new Tethering(mContext, mNetd, statsService); 742 743 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 744 745 //set up the listener for user state for creating user VPNs 746 IntentFilter intentFilter = new IntentFilter(); 747 intentFilter.addAction(Intent.ACTION_USER_STARTED); 748 intentFilter.addAction(Intent.ACTION_USER_STOPPED); 749 intentFilter.addAction(Intent.ACTION_USER_ADDED); 750 intentFilter.addAction(Intent.ACTION_USER_REMOVED); 751 intentFilter.addAction(Intent.ACTION_USER_UNLOCKED); 752 mContext.registerReceiverAsUser( 753 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 754 755 try { 756 mNetd.registerObserver(mTethering); 757 mNetd.registerObserver(mDataActivityObserver); 758 } catch (RemoteException e) { 759 loge("Error registering observer :" + e); 760 } 761 762 if (DBG) { 763 mInetLog = new ArrayList(); 764 } 765 766 mSettingsObserver = new SettingsObserver(mContext, mHandler); 767 registerSettingsCallbacks(); 768 769 mDataConnectionStats = new DataConnectionStats(mContext); 770 mDataConnectionStats.startMonitoring(); 771 772 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 773 774 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 775 776 mKeepaliveTracker = new KeepaliveTracker(mHandler); 777 } 778 779 private NetworkRequest createInternetRequestForTransport(int transportType) { 780 NetworkCapabilities netCap = new NetworkCapabilities(); 781 netCap.addCapability(NET_CAPABILITY_INTERNET); 782 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 783 if (transportType > -1) { 784 netCap.addTransportType(transportType); 785 } 786 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 787 } 788 789 private void handleMobileDataAlwaysOn() { 790 final boolean enable = (Settings.Global.getInt( 791 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 792 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 793 if (enable == isEnabled) { 794 return; // Nothing to do. 795 } 796 797 if (enable) { 798 handleRegisterNetworkRequest(new NetworkRequestInfo( 799 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestType.REQUEST)); 800 } else { 801 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 802 } 803 } 804 805 private void registerSettingsCallbacks() { 806 // Watch for global HTTP proxy changes. 807 mSettingsObserver.observe( 808 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 809 EVENT_APPLY_GLOBAL_HTTP_PROXY); 810 811 // Watch for whether or not to keep mobile data always on. 812 mSettingsObserver.observe( 813 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 814 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 815 } 816 817 private synchronized int nextNetworkRequestId() { 818 return mNextNetworkRequestId++; 819 } 820 821 @VisibleForTesting 822 protected int reserveNetId() { 823 synchronized (mNetworkForNetId) { 824 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 825 int netId = mNextNetId; 826 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 827 // Make sure NetID unused. http://b/16815182 828 if (!mNetIdInUse.get(netId)) { 829 mNetIdInUse.put(netId, true); 830 return netId; 831 } 832 } 833 } 834 throw new IllegalStateException("No free netIds"); 835 } 836 837 private NetworkState getFilteredNetworkState(int networkType, int uid, boolean ignoreBlocked) { 838 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 839 final NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 840 final NetworkState state; 841 if (nai != null) { 842 state = nai.getNetworkState(); 843 state.networkInfo.setType(networkType); 844 } else { 845 final NetworkInfo info = new NetworkInfo(networkType, 0, 846 getNetworkTypeName(networkType), ""); 847 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 848 info.setIsAvailable(true); 849 state = new NetworkState(info, new LinkProperties(), new NetworkCapabilities(), 850 null, null, null); 851 } 852 filterNetworkStateForUid(state, uid, ignoreBlocked); 853 return state; 854 } else { 855 return NetworkState.EMPTY; 856 } 857 } 858 859 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 860 if (network == null) { 861 return null; 862 } 863 synchronized (mNetworkForNetId) { 864 return mNetworkForNetId.get(network.netId); 865 } 866 } 867 868 private Network[] getVpnUnderlyingNetworks(int uid) { 869 if (!mLockdownEnabled) { 870 int user = UserHandle.getUserId(uid); 871 synchronized (mVpns) { 872 Vpn vpn = mVpns.get(user); 873 if (vpn != null && vpn.appliesToUid(uid)) { 874 return vpn.getUnderlyingNetworks(); 875 } 876 } 877 } 878 return null; 879 } 880 881 private NetworkState getUnfilteredActiveNetworkState(int uid) { 882 NetworkAgentInfo nai = getDefaultNetwork(); 883 884 final Network[] networks = getVpnUnderlyingNetworks(uid); 885 if (networks != null) { 886 // getUnderlyingNetworks() returns: 887 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 888 // empty array => the VPN explicitly said "no default network". 889 // non-empty array => the VPN specified one or more default networks; we use the 890 // first one. 891 if (networks.length > 0) { 892 nai = getNetworkAgentInfoForNetwork(networks[0]); 893 } else { 894 nai = null; 895 } 896 } 897 898 if (nai != null) { 899 return nai.getNetworkState(); 900 } else { 901 return NetworkState.EMPTY; 902 } 903 } 904 905 /** 906 * Check if UID should be blocked from using the network with the given LinkProperties. 907 */ 908 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid, 909 boolean ignoreBlocked) { 910 // Networks aren't blocked when ignoring blocked status 911 if (ignoreBlocked) return false; 912 // Networks are never blocked for system services 913 if (uid < Process.FIRST_APPLICATION_UID) return false; 914 915 final boolean networkMetered; 916 final int uidRules; 917 918 final String iface = (lp == null ? "" : lp.getInterfaceName()); 919 synchronized (mRulesLock) { 920 networkMetered = mMeteredIfaces.contains(iface); 921 uidRules = mUidRules.get(uid, RULE_NONE); 922 } 923 924 boolean allowed = true; 925 // Check Data Saver Mode first... 926 if (networkMetered) { 927 if ((uidRules & RULE_REJECT_METERED) != 0) { 928 if (LOGD_RULES) Log.d(TAG, "uid " + uid + " is blacklisted"); 929 // Explicitly blacklisted. 930 allowed = false; 931 } else { 932 allowed = !mRestrictBackground 933 || (uidRules & RULE_ALLOW_METERED) != 0 934 || (uidRules & RULE_TEMPORARY_ALLOW_METERED) != 0; 935 if (LOGD_RULES) Log.d(TAG, "allowed status for uid " + uid + " when" 936 + " mRestrictBackground=" + mRestrictBackground 937 + ", whitelisted=" + ((uidRules & RULE_ALLOW_METERED) != 0) 938 + ", tempWhitelist= + ((uidRules & RULE_TEMPORARY_ALLOW_METERED) != 0)" 939 + ": " + allowed); 940 } 941 } 942 // ...then power restrictions. 943 if (allowed) { 944 allowed = (uidRules & RULE_REJECT_ALL) == 0; 945 if (LOGD_RULES) Log.d(TAG, "allowed status for uid " + uid + " when" 946 + " rule is " + uidRulesToString(uidRules) + ": " + allowed); 947 } 948 return !allowed; 949 } 950 951 private void maybeLogBlockedNetworkInfo(NetworkInfo ni, int uid) { 952 if (ni == null || !LOGD_BLOCKED_NETWORKINFO) return; 953 boolean removed = false; 954 boolean added = false; 955 synchronized (mBlockedAppUids) { 956 if (ni.getDetailedState() == DetailedState.BLOCKED && mBlockedAppUids.add(uid)) { 957 added = true; 958 } else if (ni.isConnected() && mBlockedAppUids.remove(uid)) { 959 removed = true; 960 } 961 } 962 if (added) log("Returning blocked NetworkInfo to uid=" + uid); 963 else if (removed) log("Returning unblocked NetworkInfo to uid=" + uid); 964 } 965 966 /** 967 * Apply any relevant filters to {@link NetworkState} for the given UID. For 968 * example, this may mark the network as {@link DetailedState#BLOCKED} based 969 * on {@link #isNetworkWithLinkPropertiesBlocked}, or 970 * {@link NetworkInfo#isMetered()} based on network policies. 971 */ 972 private void filterNetworkStateForUid(NetworkState state, int uid, boolean ignoreBlocked) { 973 if (state == null || state.networkInfo == null || state.linkProperties == null) return; 974 975 if (isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid, ignoreBlocked)) { 976 state.networkInfo.setDetailedState(DetailedState.BLOCKED, null, null); 977 } 978 if (mLockdownTracker != null) { 979 mLockdownTracker.augmentNetworkInfo(state.networkInfo); 980 } 981 982 // TODO: apply metered state closer to NetworkAgentInfo 983 final long token = Binder.clearCallingIdentity(); 984 try { 985 state.networkInfo.setMetered(mPolicyManager.isNetworkMetered(state)); 986 } catch (RemoteException e) { 987 } finally { 988 Binder.restoreCallingIdentity(token); 989 } 990 } 991 992 /** 993 * Return NetworkInfo for the active (i.e., connected) network interface. 994 * It is assumed that at most one network is active at a time. If more 995 * than one is active, it is indeterminate which will be returned. 996 * @return the info for the active network, or {@code null} if none is 997 * active 998 */ 999 @Override 1000 public NetworkInfo getActiveNetworkInfo() { 1001 enforceAccessPermission(); 1002 final int uid = Binder.getCallingUid(); 1003 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1004 filterNetworkStateForUid(state, uid, false); 1005 maybeLogBlockedNetworkInfo(state.networkInfo, uid); 1006 return state.networkInfo; 1007 } 1008 1009 @Override 1010 public Network getActiveNetwork() { 1011 enforceAccessPermission(); 1012 return getActiveNetworkForUidInternal(Binder.getCallingUid(), false); 1013 } 1014 1015 @Override 1016 public Network getActiveNetworkForUid(int uid, boolean ignoreBlocked) { 1017 enforceConnectivityInternalPermission(); 1018 return getActiveNetworkForUidInternal(uid, ignoreBlocked); 1019 } 1020 1021 private Network getActiveNetworkForUidInternal(final int uid, boolean ignoreBlocked) { 1022 final int user = UserHandle.getUserId(uid); 1023 int vpnNetId = NETID_UNSET; 1024 synchronized (mVpns) { 1025 final Vpn vpn = mVpns.get(user); 1026 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 1027 } 1028 NetworkAgentInfo nai; 1029 if (vpnNetId != NETID_UNSET) { 1030 synchronized (mNetworkForNetId) { 1031 nai = mNetworkForNetId.get(vpnNetId); 1032 } 1033 if (nai != null) return nai.network; 1034 } 1035 nai = getDefaultNetwork(); 1036 if (nai != null 1037 && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid, ignoreBlocked)) { 1038 nai = null; 1039 } 1040 return nai != null ? nai.network : null; 1041 } 1042 1043 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1044 enforceAccessPermission(); 1045 final int uid = Binder.getCallingUid(); 1046 NetworkState state = getUnfilteredActiveNetworkState(uid); 1047 return state.networkInfo; 1048 } 1049 1050 @Override 1051 public NetworkInfo getActiveNetworkInfoForUid(int uid, boolean ignoreBlocked) { 1052 enforceConnectivityInternalPermission(); 1053 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1054 filterNetworkStateForUid(state, uid, ignoreBlocked); 1055 return state.networkInfo; 1056 } 1057 1058 @Override 1059 public NetworkInfo getNetworkInfo(int networkType) { 1060 enforceAccessPermission(); 1061 final int uid = Binder.getCallingUid(); 1062 if (getVpnUnderlyingNetworks(uid) != null) { 1063 // A VPN is active, so we may need to return one of its underlying networks. This 1064 // information is not available in LegacyTypeTracker, so we have to get it from 1065 // getUnfilteredActiveNetworkState. 1066 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1067 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1068 filterNetworkStateForUid(state, uid, false); 1069 return state.networkInfo; 1070 } 1071 } 1072 final NetworkState state = getFilteredNetworkState(networkType, uid, false); 1073 return state.networkInfo; 1074 } 1075 1076 @Override 1077 public NetworkInfo getNetworkInfoForUid(Network network, int uid, boolean ignoreBlocked) { 1078 enforceAccessPermission(); 1079 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1080 if (nai != null) { 1081 final NetworkState state = nai.getNetworkState(); 1082 filterNetworkStateForUid(state, uid, ignoreBlocked); 1083 return state.networkInfo; 1084 } else { 1085 return null; 1086 } 1087 } 1088 1089 @Override 1090 public NetworkInfo[] getAllNetworkInfo() { 1091 enforceAccessPermission(); 1092 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1093 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1094 networkType++) { 1095 NetworkInfo info = getNetworkInfo(networkType); 1096 if (info != null) { 1097 result.add(info); 1098 } 1099 } 1100 return result.toArray(new NetworkInfo[result.size()]); 1101 } 1102 1103 @Override 1104 public Network getNetworkForType(int networkType) { 1105 enforceAccessPermission(); 1106 final int uid = Binder.getCallingUid(); 1107 NetworkState state = getFilteredNetworkState(networkType, uid, false); 1108 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid, false)) { 1109 return state.network; 1110 } 1111 return null; 1112 } 1113 1114 @Override 1115 public Network[] getAllNetworks() { 1116 enforceAccessPermission(); 1117 synchronized (mNetworkForNetId) { 1118 final Network[] result = new Network[mNetworkForNetId.size()]; 1119 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1120 result[i] = mNetworkForNetId.valueAt(i).network; 1121 } 1122 return result; 1123 } 1124 } 1125 1126 @Override 1127 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1128 // The basic principle is: if an app's traffic could possibly go over a 1129 // network, without the app doing anything multinetwork-specific, 1130 // (hence, by "default"), then include that network's capabilities in 1131 // the array. 1132 // 1133 // In the normal case, app traffic only goes over the system's default 1134 // network connection, so that's the only network returned. 1135 // 1136 // With a VPN in force, some app traffic may go into the VPN, and thus 1137 // over whatever underlying networks the VPN specifies, while other app 1138 // traffic may go over the system default network (e.g.: a split-tunnel 1139 // VPN, or an app disallowed by the VPN), so the set of networks 1140 // returned includes the VPN's underlying networks and the system 1141 // default. 1142 enforceAccessPermission(); 1143 1144 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1145 1146 NetworkAgentInfo nai = getDefaultNetwork(); 1147 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1148 if (nc != null) { 1149 result.put(nai.network, nc); 1150 } 1151 1152 if (!mLockdownEnabled) { 1153 synchronized (mVpns) { 1154 Vpn vpn = mVpns.get(userId); 1155 if (vpn != null) { 1156 Network[] networks = vpn.getUnderlyingNetworks(); 1157 if (networks != null) { 1158 for (Network network : networks) { 1159 nai = getNetworkAgentInfoForNetwork(network); 1160 nc = getNetworkCapabilitiesInternal(nai); 1161 if (nc != null) { 1162 result.put(network, nc); 1163 } 1164 } 1165 } 1166 } 1167 } 1168 } 1169 1170 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1171 out = result.values().toArray(out); 1172 return out; 1173 } 1174 1175 @Override 1176 public boolean isNetworkSupported(int networkType) { 1177 enforceAccessPermission(); 1178 return mLegacyTypeTracker.isTypeSupported(networkType); 1179 } 1180 1181 /** 1182 * Return LinkProperties for the active (i.e., connected) default 1183 * network interface. It is assumed that at most one default network 1184 * is active at a time. If more than one is active, it is indeterminate 1185 * which will be returned. 1186 * @return the ip properties for the active network, or {@code null} if 1187 * none is active 1188 */ 1189 @Override 1190 public LinkProperties getActiveLinkProperties() { 1191 enforceAccessPermission(); 1192 final int uid = Binder.getCallingUid(); 1193 NetworkState state = getUnfilteredActiveNetworkState(uid); 1194 return state.linkProperties; 1195 } 1196 1197 @Override 1198 public LinkProperties getLinkPropertiesForType(int networkType) { 1199 enforceAccessPermission(); 1200 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1201 if (nai != null) { 1202 synchronized (nai) { 1203 return new LinkProperties(nai.linkProperties); 1204 } 1205 } 1206 return null; 1207 } 1208 1209 // TODO - this should be ALL networks 1210 @Override 1211 public LinkProperties getLinkProperties(Network network) { 1212 enforceAccessPermission(); 1213 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1214 if (nai != null) { 1215 synchronized (nai) { 1216 return new LinkProperties(nai.linkProperties); 1217 } 1218 } 1219 return null; 1220 } 1221 1222 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1223 if (nai != null) { 1224 synchronized (nai) { 1225 if (nai.networkCapabilities != null) { 1226 return new NetworkCapabilities(nai.networkCapabilities); 1227 } 1228 } 1229 } 1230 return null; 1231 } 1232 1233 @Override 1234 public NetworkCapabilities getNetworkCapabilities(Network network) { 1235 enforceAccessPermission(); 1236 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1237 } 1238 1239 @Override 1240 public NetworkState[] getAllNetworkState() { 1241 // Require internal since we're handing out IMSI details 1242 enforceConnectivityInternalPermission(); 1243 1244 final ArrayList<NetworkState> result = Lists.newArrayList(); 1245 for (Network network : getAllNetworks()) { 1246 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1247 if (nai != null) { 1248 result.add(nai.getNetworkState()); 1249 } 1250 } 1251 return result.toArray(new NetworkState[result.size()]); 1252 } 1253 1254 @Override 1255 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1256 enforceAccessPermission(); 1257 final int uid = Binder.getCallingUid(); 1258 final long token = Binder.clearCallingIdentity(); 1259 try { 1260 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1261 if (state.networkInfo != null) { 1262 try { 1263 return mPolicyManager.getNetworkQuotaInfo(state); 1264 } catch (RemoteException e) { 1265 } 1266 } 1267 return null; 1268 } finally { 1269 Binder.restoreCallingIdentity(token); 1270 } 1271 } 1272 1273 @Override 1274 public boolean isActiveNetworkMetered() { 1275 enforceAccessPermission(); 1276 1277 final NetworkInfo info = getActiveNetworkInfo(); 1278 return (info != null) ? info.isMetered() : false; 1279 } 1280 1281 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1282 @Override 1283 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1284 int deviceType = Integer.parseInt(label); 1285 sendDataActivityBroadcast(deviceType, active, tsNanos); 1286 } 1287 }; 1288 1289 /** 1290 * Ensure that a network route exists to deliver traffic to the specified 1291 * host via the specified network interface. 1292 * @param networkType the type of the network over which traffic to the 1293 * specified host is to be routed 1294 * @param hostAddress the IP address of the host to which the route is 1295 * desired 1296 * @return {@code true} on success, {@code false} on failure 1297 */ 1298 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1299 enforceChangePermission(); 1300 if (mProtectedNetworks.contains(networkType)) { 1301 enforceConnectivityInternalPermission(); 1302 } 1303 1304 InetAddress addr; 1305 try { 1306 addr = InetAddress.getByAddress(hostAddress); 1307 } catch (UnknownHostException e) { 1308 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1309 return false; 1310 } 1311 1312 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1313 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1314 return false; 1315 } 1316 1317 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1318 if (nai == null) { 1319 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1320 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1321 } else { 1322 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1323 } 1324 return false; 1325 } 1326 1327 DetailedState netState; 1328 synchronized (nai) { 1329 netState = nai.networkInfo.getDetailedState(); 1330 } 1331 1332 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1333 if (VDBG) { 1334 log("requestRouteToHostAddress on down network " 1335 + "(" + networkType + ") - dropped" 1336 + " netState=" + netState); 1337 } 1338 return false; 1339 } 1340 1341 final int uid = Binder.getCallingUid(); 1342 final long token = Binder.clearCallingIdentity(); 1343 try { 1344 LinkProperties lp; 1345 int netId; 1346 synchronized (nai) { 1347 lp = nai.linkProperties; 1348 netId = nai.network.netId; 1349 } 1350 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1351 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1352 return ok; 1353 } finally { 1354 Binder.restoreCallingIdentity(token); 1355 } 1356 } 1357 1358 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1359 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1360 if (bestRoute == null) { 1361 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1362 } else { 1363 String iface = bestRoute.getInterface(); 1364 if (bestRoute.getGateway().equals(addr)) { 1365 // if there is no better route, add the implied hostroute for our gateway 1366 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1367 } else { 1368 // if we will connect to this through another route, add a direct route 1369 // to it's gateway 1370 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1371 } 1372 } 1373 if (DBG) log("Adding legacy route " + bestRoute + 1374 " for UID/PID " + uid + "/" + Binder.getCallingPid()); 1375 try { 1376 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1377 } catch (Exception e) { 1378 // never crash - catch them all 1379 if (DBG) loge("Exception trying to add a route: " + e); 1380 return false; 1381 } 1382 return true; 1383 } 1384 1385 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1386 @Override 1387 public void onUidRulesChanged(int uid, int uidRules) { 1388 // caller is NPMS, since we only register with them 1389 if (LOGD_RULES) { 1390 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1391 } 1392 1393 synchronized (mRulesLock) { 1394 // skip update when we've already applied rules 1395 final int oldRules = mUidRules.get(uid, RULE_NONE); 1396 if (oldRules == uidRules) return; 1397 1398 if (uidRules == RULE_NONE) { 1399 mUidRules.delete(uid); 1400 } else { 1401 mUidRules.put(uid, uidRules); 1402 } 1403 } 1404 1405 // TODO: notify UID when it has requested targeted updates 1406 } 1407 1408 @Override 1409 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1410 // caller is NPMS, since we only register with them 1411 if (LOGD_RULES) { 1412 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1413 } 1414 1415 synchronized (mRulesLock) { 1416 mMeteredIfaces.clear(); 1417 for (String iface : meteredIfaces) { 1418 mMeteredIfaces.add(iface); 1419 } 1420 } 1421 } 1422 1423 @Override 1424 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1425 // caller is NPMS, since we only register with them 1426 if (LOGD_RULES) { 1427 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1428 } 1429 1430 synchronized (mRulesLock) { 1431 mRestrictBackground = restrictBackground; 1432 } 1433 1434 if (restrictBackground) { 1435 log("onRestrictBackgroundChanged(true): disabling tethering"); 1436 mTethering.untetherAll(); 1437 } 1438 } 1439 1440 @Override 1441 public void onRestrictBackgroundWhitelistChanged(int uid, boolean whitelisted) { 1442 if (LOGD_RULES) { 1443 // caller is NPMS, since we only register with them 1444 log("onRestrictBackgroundWhitelistChanged(uid=" + uid + ", whitelisted=" 1445 + whitelisted + ")"); 1446 } 1447 } 1448 @Override 1449 public void onRestrictBackgroundBlacklistChanged(int uid, boolean blacklisted) { 1450 if (LOGD_RULES) { 1451 // caller is NPMS, since we only register with them 1452 log("onRestrictBackgroundBlacklistChanged(uid=" + uid + ", blacklisted=" 1453 + blacklisted + ")"); 1454 } 1455 } 1456 }; 1457 1458 /** 1459 * Require that the caller is either in the same user or has appropriate permission to interact 1460 * across users. 1461 * 1462 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1463 */ 1464 private void enforceCrossUserPermission(int userId) { 1465 if (userId == UserHandle.getCallingUserId()) { 1466 // Not a cross-user call. 1467 return; 1468 } 1469 mContext.enforceCallingOrSelfPermission( 1470 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1471 "ConnectivityService"); 1472 } 1473 1474 private void enforceInternetPermission() { 1475 mContext.enforceCallingOrSelfPermission( 1476 android.Manifest.permission.INTERNET, 1477 "ConnectivityService"); 1478 } 1479 1480 private void enforceAccessPermission() { 1481 mContext.enforceCallingOrSelfPermission( 1482 android.Manifest.permission.ACCESS_NETWORK_STATE, 1483 "ConnectivityService"); 1484 } 1485 1486 private void enforceChangePermission() { 1487 ConnectivityManager.enforceChangePermission(mContext); 1488 } 1489 1490 private void enforceTetherAccessPermission() { 1491 mContext.enforceCallingOrSelfPermission( 1492 android.Manifest.permission.ACCESS_NETWORK_STATE, 1493 "ConnectivityService"); 1494 } 1495 1496 private void enforceConnectivityInternalPermission() { 1497 mContext.enforceCallingOrSelfPermission( 1498 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1499 "ConnectivityService"); 1500 } 1501 1502 private void enforceKeepalivePermission() { 1503 mContext.enforceCallingOrSelfPermission(KeepaliveTracker.PERMISSION, "ConnectivityService"); 1504 } 1505 1506 public void sendConnectedBroadcast(NetworkInfo info) { 1507 enforceConnectivityInternalPermission(); 1508 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1509 } 1510 1511 private void sendInetConditionBroadcast(NetworkInfo info) { 1512 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1513 } 1514 1515 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1516 if (mLockdownTracker != null) { 1517 info = new NetworkInfo(info); 1518 mLockdownTracker.augmentNetworkInfo(info); 1519 } 1520 1521 Intent intent = new Intent(bcastType); 1522 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1523 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1524 if (info.isFailover()) { 1525 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1526 info.setFailover(false); 1527 } 1528 if (info.getReason() != null) { 1529 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1530 } 1531 if (info.getExtraInfo() != null) { 1532 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1533 info.getExtraInfo()); 1534 } 1535 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1536 return intent; 1537 } 1538 1539 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1540 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1541 } 1542 1543 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1544 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1545 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1546 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1547 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1548 final long ident = Binder.clearCallingIdentity(); 1549 try { 1550 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1551 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1552 } finally { 1553 Binder.restoreCallingIdentity(ident); 1554 } 1555 } 1556 1557 private void sendStickyBroadcast(Intent intent) { 1558 synchronized(this) { 1559 if (!mSystemReady) { 1560 mInitialBroadcast = new Intent(intent); 1561 } 1562 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1563 if (VDBG) { 1564 log("sendStickyBroadcast: action=" + intent.getAction()); 1565 } 1566 1567 Bundle options = null; 1568 final long ident = Binder.clearCallingIdentity(); 1569 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1570 final NetworkInfo ni = intent.getParcelableExtra( 1571 ConnectivityManager.EXTRA_NETWORK_INFO); 1572 if (ni.getType() == ConnectivityManager.TYPE_MOBILE_SUPL) { 1573 intent.setAction(ConnectivityManager.CONNECTIVITY_ACTION_SUPL); 1574 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1575 } else { 1576 BroadcastOptions opts = BroadcastOptions.makeBasic(); 1577 opts.setMaxManifestReceiverApiLevel(Build.VERSION_CODES.M); 1578 options = opts.toBundle(); 1579 } 1580 final IBatteryStats bs = BatteryStatsService.getService(); 1581 try { 1582 bs.noteConnectivityChanged(intent.getIntExtra( 1583 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1584 ni != null ? ni.getState().toString() : "?"); 1585 } catch (RemoteException e) { 1586 } 1587 } 1588 try { 1589 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL, options); 1590 } finally { 1591 Binder.restoreCallingIdentity(ident); 1592 } 1593 } 1594 } 1595 1596 void systemReady() { 1597 loadGlobalProxy(); 1598 1599 synchronized(this) { 1600 mSystemReady = true; 1601 if (mInitialBroadcast != null) { 1602 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1603 mInitialBroadcast = null; 1604 } 1605 } 1606 // load the global proxy at startup 1607 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1608 1609 // Try bringing up tracker, but KeyStore won't be ready yet for secondary users so wait 1610 // for user to unlock device too. 1611 updateLockdownVpn(); 1612 1613 // Configure whether mobile data is always on. 1614 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1615 1616 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1617 1618 mPermissionMonitor.startMonitoring(); 1619 } 1620 1621 /** 1622 * Setup data activity tracking for the given network. 1623 * 1624 * Every {@code setupDataActivityTracking} should be paired with a 1625 * {@link #removeDataActivityTracking} for cleanup. 1626 */ 1627 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1628 final String iface = networkAgent.linkProperties.getInterfaceName(); 1629 1630 final int timeout; 1631 int type = ConnectivityManager.TYPE_NONE; 1632 1633 if (networkAgent.networkCapabilities.hasTransport( 1634 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1635 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1636 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1637 10); 1638 type = ConnectivityManager.TYPE_MOBILE; 1639 } else if (networkAgent.networkCapabilities.hasTransport( 1640 NetworkCapabilities.TRANSPORT_WIFI)) { 1641 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1642 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1643 15); 1644 type = ConnectivityManager.TYPE_WIFI; 1645 } else { 1646 // do not track any other networks 1647 timeout = 0; 1648 } 1649 1650 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1651 try { 1652 mNetd.addIdleTimer(iface, timeout, type); 1653 } catch (Exception e) { 1654 // You shall not crash! 1655 loge("Exception in setupDataActivityTracking " + e); 1656 } 1657 } 1658 } 1659 1660 /** 1661 * Remove data activity tracking when network disconnects. 1662 */ 1663 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1664 final String iface = networkAgent.linkProperties.getInterfaceName(); 1665 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1666 1667 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1668 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1669 try { 1670 // the call fails silently if no idletimer setup for this interface 1671 mNetd.removeIdleTimer(iface); 1672 } catch (Exception e) { 1673 loge("Exception in removeDataActivityTracking " + e); 1674 } 1675 } 1676 } 1677 1678 /** 1679 * Reads the network specific MTU size from reources. 1680 * and set it on it's iface. 1681 */ 1682 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1683 final String iface = newLp.getInterfaceName(); 1684 final int mtu = newLp.getMtu(); 1685 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1686 if (VDBG) log("identical MTU - not setting"); 1687 return; 1688 } 1689 1690 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1691 if (mtu != 0) loge("Unexpected mtu value: " + mtu + ", " + iface); 1692 return; 1693 } 1694 1695 // Cannot set MTU without interface name 1696 if (TextUtils.isEmpty(iface)) { 1697 loge("Setting MTU size with null iface."); 1698 return; 1699 } 1700 1701 try { 1702 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 1703 mNetd.setMtu(iface, mtu); 1704 } catch (Exception e) { 1705 Slog.e(TAG, "exception in setMtu()" + e); 1706 } 1707 } 1708 1709 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1710 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1711 1712 // Overridden for testing purposes to avoid writing to SystemProperties. 1713 @VisibleForTesting 1714 protected int getDefaultTcpRwnd() { 1715 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1716 } 1717 1718 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1719 if (isDefaultNetwork(nai) == false) { 1720 return; 1721 } 1722 1723 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1724 String[] values = null; 1725 if (tcpBufferSizes != null) { 1726 values = tcpBufferSizes.split(","); 1727 } 1728 1729 if (values == null || values.length != 6) { 1730 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1731 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1732 values = tcpBufferSizes.split(","); 1733 } 1734 1735 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1736 1737 try { 1738 if (VDBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1739 1740 final String prefix = "/sys/kernel/ipv4/tcp_"; 1741 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1742 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1743 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1744 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1745 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1746 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1747 mCurrentTcpBufferSizes = tcpBufferSizes; 1748 } catch (IOException e) { 1749 loge("Can't set TCP buffer sizes:" + e); 1750 } 1751 1752 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1753 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1754 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1755 if (rwndValue != 0) { 1756 SystemProperties.set(sysctlKey, rwndValue.toString()); 1757 } 1758 } 1759 1760 private void flushVmDnsCache() { 1761 /* 1762 * Tell the VMs to toss their DNS caches 1763 */ 1764 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1765 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1766 /* 1767 * Connectivity events can happen before boot has completed ... 1768 */ 1769 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1770 final long ident = Binder.clearCallingIdentity(); 1771 try { 1772 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1773 } finally { 1774 Binder.restoreCallingIdentity(ident); 1775 } 1776 } 1777 1778 @Override 1779 public int getRestoreDefaultNetworkDelay(int networkType) { 1780 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1781 NETWORK_RESTORE_DELAY_PROP_NAME); 1782 if(restoreDefaultNetworkDelayStr != null && 1783 restoreDefaultNetworkDelayStr.length() != 0) { 1784 try { 1785 return Integer.parseInt(restoreDefaultNetworkDelayStr); 1786 } catch (NumberFormatException e) { 1787 } 1788 } 1789 // if the system property isn't set, use the value for the apn type 1790 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1791 1792 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1793 (mNetConfigs[networkType] != null)) { 1794 ret = mNetConfigs[networkType].restoreTime; 1795 } 1796 return ret; 1797 } 1798 1799 private boolean argsContain(String[] args, String target) { 1800 for (String arg : args) { 1801 if (arg.equals(target)) return true; 1802 } 1803 return false; 1804 } 1805 1806 private void dumpNetworkDiagnostics(IndentingPrintWriter pw) { 1807 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1808 final long DIAG_TIME_MS = 5000; 1809 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1810 // Start gathering diagnostic information. 1811 netDiags.add(new NetworkDiagnostics( 1812 nai.network, 1813 new LinkProperties(nai.linkProperties), // Must be a copy. 1814 DIAG_TIME_MS)); 1815 } 1816 1817 for (NetworkDiagnostics netDiag : netDiags) { 1818 pw.println(); 1819 netDiag.waitForMeasurements(); 1820 netDiag.dump(pw); 1821 } 1822 } 1823 1824 @Override 1825 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1826 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1827 if (mContext.checkCallingOrSelfPermission( 1828 android.Manifest.permission.DUMP) 1829 != PackageManager.PERMISSION_GRANTED) { 1830 pw.println("Permission Denial: can't dump ConnectivityService " + 1831 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1832 Binder.getCallingUid()); 1833 return; 1834 } 1835 1836 if (argsContain(args, "--diag")) { 1837 dumpNetworkDiagnostics(pw); 1838 return; 1839 } 1840 1841 pw.print("NetworkFactories for:"); 1842 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1843 pw.print(" " + nfi.name); 1844 } 1845 pw.println(); 1846 pw.println(); 1847 1848 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 1849 pw.print("Active default network: "); 1850 if (defaultNai == null) { 1851 pw.println("none"); 1852 } else { 1853 pw.println(defaultNai.network.netId); 1854 } 1855 pw.println(); 1856 1857 pw.println("Current Networks:"); 1858 pw.increaseIndent(); 1859 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1860 pw.println(nai.toString()); 1861 pw.increaseIndent(); 1862 pw.println("Requests:"); 1863 pw.increaseIndent(); 1864 for (int i = 0; i < nai.networkRequests.size(); i++) { 1865 pw.println(nai.networkRequests.valueAt(i).toString()); 1866 } 1867 pw.decreaseIndent(); 1868 pw.println("Lingered:"); 1869 pw.increaseIndent(); 1870 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1871 pw.decreaseIndent(); 1872 pw.decreaseIndent(); 1873 } 1874 pw.decreaseIndent(); 1875 pw.println(); 1876 1877 pw.println("Metered Interfaces:"); 1878 pw.increaseIndent(); 1879 for (String value : mMeteredIfaces) { 1880 pw.println(value); 1881 } 1882 pw.decreaseIndent(); 1883 pw.println(); 1884 1885 pw.print("Restrict background: "); 1886 pw.println(mRestrictBackground); 1887 pw.println(); 1888 1889 pw.println("Status for known UIDs:"); 1890 pw.increaseIndent(); 1891 final int size = mUidRules.size(); 1892 for (int i = 0; i < size; i++) { 1893 final int uid = mUidRules.keyAt(i); 1894 pw.print("UID="); 1895 pw.print(uid); 1896 final int uidRules = mUidRules.get(uid, RULE_NONE); 1897 pw.print(" rules="); 1898 pw.print(uidRulesToString(uidRules)); 1899 pw.println(); 1900 } 1901 pw.println(); 1902 pw.decreaseIndent(); 1903 1904 pw.println("Network Requests:"); 1905 pw.increaseIndent(); 1906 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1907 pw.println(nri.toString()); 1908 } 1909 pw.println(); 1910 pw.decreaseIndent(); 1911 1912 mLegacyTypeTracker.dump(pw); 1913 1914 synchronized (this) { 1915 pw.print("mNetTransitionWakeLock: currently " + 1916 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1917 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1918 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1919 } else { 1920 pw.println(", last requested never"); 1921 } 1922 } 1923 1924 pw.println(); 1925 mTethering.dump(fd, pw, args); 1926 1927 pw.println(); 1928 mKeepaliveTracker.dump(pw); 1929 1930 pw.println(); 1931 1932 if (mInetLog != null && mInetLog.size() > 0) { 1933 pw.println(); 1934 pw.println("Inet condition reports:"); 1935 pw.increaseIndent(); 1936 for(int i = 0; i < mInetLog.size(); i++) { 1937 pw.println(mInetLog.get(i)); 1938 } 1939 pw.decreaseIndent(); 1940 } 1941 1942 if (argsContain(args, "--short") == false) { 1943 pw.println(); 1944 synchronized (mValidationLogs) { 1945 pw.println("mValidationLogs (most recent first):"); 1946 for (Pair<Network,ReadOnlyLocalLog> p : mValidationLogs) { 1947 pw.println(p.first); 1948 pw.increaseIndent(); 1949 p.second.dump(fd, pw, args); 1950 pw.decreaseIndent(); 1951 } 1952 } 1953 1954 pw.println(); 1955 pw.println("mNetworkRequestInfoLogs (most recent first):"); 1956 pw.increaseIndent(); 1957 mNetworkRequestInfoLogs.reverseDump(fd, pw, args); 1958 pw.decreaseIndent(); 1959 } 1960 } 1961 1962 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, int what) { 1963 if (nai.network == null) return false; 1964 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1965 if (officialNai != null && officialNai.equals(nai)) return true; 1966 if (officialNai != null || VDBG) { 1967 final String msg = sMagicDecoderRing.get(what, Integer.toString(what)); 1968 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1969 " - " + nai); 1970 } 1971 return false; 1972 } 1973 1974 private boolean isRequest(NetworkRequest request) { 1975 return mNetworkRequests.get(request).isRequest(); 1976 } 1977 1978 // must be stateless - things change under us. 1979 private class NetworkStateTrackerHandler extends Handler { 1980 public NetworkStateTrackerHandler(Looper looper) { 1981 super(looper); 1982 } 1983 1984 private boolean maybeHandleAsyncChannelMessage(Message msg) { 1985 switch (msg.what) { 1986 default: 1987 return false; 1988 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1989 handleAsyncChannelHalfConnect(msg); 1990 break; 1991 } 1992 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1993 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1994 if (nai != null) nai.asyncChannel.disconnect(); 1995 break; 1996 } 1997 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1998 handleAsyncChannelDisconnected(msg); 1999 break; 2000 } 2001 } 2002 return true; 2003 } 2004 2005 private void maybeHandleNetworkAgentMessage(Message msg) { 2006 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2007 if (nai == null) { 2008 if (VDBG) { 2009 final String what = sMagicDecoderRing.get(msg.what, Integer.toString(msg.what)); 2010 log(String.format("%s from unknown NetworkAgent", what)); 2011 } 2012 return; 2013 } 2014 2015 switch (msg.what) { 2016 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 2017 final NetworkCapabilities networkCapabilities = (NetworkCapabilities) msg.obj; 2018 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL) || 2019 networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 2020 Slog.wtf(TAG, "BUG: " + nai + " has CS-managed capability."); 2021 } 2022 if (nai.everConnected && !nai.networkCapabilities.equalImmutableCapabilities( 2023 networkCapabilities)) { 2024 Slog.wtf(TAG, "BUG: " + nai + " changed immutable capabilities: " 2025 + nai.networkCapabilities + " -> " + networkCapabilities); 2026 } 2027 updateCapabilities(nai, networkCapabilities); 2028 break; 2029 } 2030 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 2031 if (VDBG) { 2032 log("Update of LinkProperties for " + nai.name() + 2033 "; created=" + nai.created + 2034 "; everConnected=" + nai.everConnected); 2035 } 2036 LinkProperties oldLp = nai.linkProperties; 2037 synchronized (nai) { 2038 nai.linkProperties = (LinkProperties)msg.obj; 2039 } 2040 if (nai.everConnected) updateLinkProperties(nai, oldLp); 2041 break; 2042 } 2043 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 2044 NetworkInfo info = (NetworkInfo) msg.obj; 2045 updateNetworkInfo(nai, info); 2046 break; 2047 } 2048 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 2049 Integer score = (Integer) msg.obj; 2050 if (score != null) updateNetworkScore(nai, score.intValue()); 2051 break; 2052 } 2053 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 2054 try { 2055 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2056 } catch (Exception e) { 2057 // Never crash! 2058 loge("Exception in addVpnUidRanges: " + e); 2059 } 2060 break; 2061 } 2062 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 2063 try { 2064 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2065 } catch (Exception e) { 2066 // Never crash! 2067 loge("Exception in removeVpnUidRanges: " + e); 2068 } 2069 break; 2070 } 2071 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 2072 if (nai.everConnected && !nai.networkMisc.explicitlySelected) { 2073 loge("ERROR: already-connected network explicitly selected."); 2074 } 2075 nai.networkMisc.explicitlySelected = true; 2076 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 2077 break; 2078 } 2079 case NetworkAgent.EVENT_PACKET_KEEPALIVE: { 2080 mKeepaliveTracker.handleEventPacketKeepalive(nai, msg); 2081 break; 2082 } 2083 } 2084 } 2085 2086 private boolean maybeHandleNetworkMonitorMessage(Message msg) { 2087 switch (msg.what) { 2088 default: 2089 return false; 2090 case NetworkMonitor.EVENT_NETWORK_TESTED: { 2091 final NetworkAgentInfo nai; 2092 synchronized (mNetworkForNetId) { 2093 nai = mNetworkForNetId.get(msg.arg2); 2094 } 2095 if (nai != null) { 2096 final boolean valid = 2097 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2098 if (DBG) log(nai.name() + " validation " + (valid ? "passed" : "failed") + 2099 (msg.obj == null ? "" : " with redirect to " + (String)msg.obj)); 2100 if (valid != nai.lastValidated) { 2101 final int oldScore = nai.getCurrentScore(); 2102 nai.lastValidated = valid; 2103 nai.everValidated |= valid; 2104 updateCapabilities(nai, nai.networkCapabilities); 2105 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2106 if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); 2107 } 2108 updateInetCondition(nai); 2109 // Let the NetworkAgent know the state of its network 2110 Bundle redirectUrlBundle = new Bundle(); 2111 redirectUrlBundle.putString(NetworkAgent.REDIRECT_URL_KEY, (String)msg.obj); 2112 nai.asyncChannel.sendMessage( 2113 NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2114 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2115 0, redirectUrlBundle); 2116 } 2117 break; 2118 } 2119 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2120 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2121 if (isLiveNetworkAgent(nai, msg.what)) { 2122 handleLingerComplete(nai); 2123 } 2124 break; 2125 } 2126 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2127 final int netId = msg.arg2; 2128 final boolean visible = (msg.arg1 != 0); 2129 final NetworkAgentInfo nai; 2130 synchronized (mNetworkForNetId) { 2131 nai = mNetworkForNetId.get(netId); 2132 } 2133 // If captive portal status has changed, update capabilities. 2134 if (nai != null && (visible != nai.lastCaptivePortalDetected)) { 2135 nai.lastCaptivePortalDetected = visible; 2136 nai.everCaptivePortalDetected |= visible; 2137 updateCapabilities(nai, nai.networkCapabilities); 2138 } 2139 if (!visible) { 2140 setProvNotificationVisibleIntent(false, netId, null, 0, null, null, false); 2141 } else { 2142 if (nai == null) { 2143 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2144 break; 2145 } 2146 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2147 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), 2148 (PendingIntent)msg.obj, nai.networkMisc.explicitlySelected); 2149 } 2150 break; 2151 } 2152 } 2153 return true; 2154 } 2155 2156 @Override 2157 public void handleMessage(Message msg) { 2158 if (!maybeHandleAsyncChannelMessage(msg) && !maybeHandleNetworkMonitorMessage(msg)) { 2159 maybeHandleNetworkAgentMessage(msg); 2160 } 2161 } 2162 } 2163 2164 private void linger(NetworkAgentInfo nai) { 2165 nai.lingering = true; 2166 NetworkEvent.logEvent(nai.network.netId, NetworkEvent.NETWORK_LINGER); 2167 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 2168 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 2169 } 2170 2171 // Cancel any lingering so the linger timeout doesn't teardown a network. 2172 // This should be called when a network begins satisfying a NetworkRequest. 2173 // Note: depending on what state the NetworkMonitor is in (e.g., 2174 // if it's awaiting captive portal login, or if validation failed), this 2175 // may trigger a re-evaluation of the network. 2176 private void unlinger(NetworkAgentInfo nai) { 2177 nai.networkLingered.clear(); 2178 if (!nai.lingering) return; 2179 nai.lingering = false; 2180 NetworkEvent.logEvent(nai.network.netId, NetworkEvent.NETWORK_UNLINGER); 2181 if (VDBG) log("Canceling linger of " + nai.name()); 2182 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2183 } 2184 2185 private void handleAsyncChannelHalfConnect(Message msg) { 2186 AsyncChannel ac = (AsyncChannel) msg.obj; 2187 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2188 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2189 if (VDBG) log("NetworkFactory connected"); 2190 // A network factory has connected. Send it all current NetworkRequests. 2191 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2192 if (!nri.isRequest()) continue; 2193 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2194 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2195 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2196 } 2197 } else { 2198 loge("Error connecting NetworkFactory"); 2199 mNetworkFactoryInfos.remove(msg.obj); 2200 } 2201 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2202 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2203 if (VDBG) log("NetworkAgent connected"); 2204 // A network agent has requested a connection. Establish the connection. 2205 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2206 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2207 } else { 2208 loge("Error connecting NetworkAgent"); 2209 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2210 if (nai != null) { 2211 final boolean wasDefault = isDefaultNetwork(nai); 2212 synchronized (mNetworkForNetId) { 2213 mNetworkForNetId.remove(nai.network.netId); 2214 mNetIdInUse.delete(nai.network.netId); 2215 } 2216 // Just in case. 2217 mLegacyTypeTracker.remove(nai, wasDefault); 2218 } 2219 } 2220 } 2221 } 2222 2223 private void handleAsyncChannelDisconnected(Message msg) { 2224 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2225 if (nai != null) { 2226 if (DBG) { 2227 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2228 } 2229 // A network agent has disconnected. 2230 // TODO - if we move the logic to the network agent (have them disconnect 2231 // because they lost all their requests or because their score isn't good) 2232 // then they would disconnect organically, report their new state and then 2233 // disconnect the channel. 2234 if (nai.networkInfo.isConnected()) { 2235 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2236 null, null); 2237 } 2238 final boolean wasDefault = isDefaultNetwork(nai); 2239 if (wasDefault) { 2240 mDefaultInetConditionPublished = 0; 2241 } 2242 notifyIfacesChangedForNetworkStats(); 2243 // TODO - we shouldn't send CALLBACK_LOST to requests that can be satisfied 2244 // by other networks that are already connected. Perhaps that can be done by 2245 // sending all CALLBACK_LOST messages (for requests, not listens) at the end 2246 // of rematchAllNetworksAndRequests 2247 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2248 mKeepaliveTracker.handleStopAllKeepalives(nai, 2249 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 2250 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2251 mNetworkAgentInfos.remove(msg.replyTo); 2252 updateClat(null, nai.linkProperties, nai); 2253 synchronized (mNetworkForNetId) { 2254 // Remove the NetworkAgent, but don't mark the netId as 2255 // available until we've told netd to delete it below. 2256 mNetworkForNetId.remove(nai.network.netId); 2257 } 2258 // Remove all previously satisfied requests. 2259 for (int i = 0; i < nai.networkRequests.size(); i++) { 2260 NetworkRequest request = nai.networkRequests.valueAt(i); 2261 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2262 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2263 mNetworkForRequestId.remove(request.requestId); 2264 sendUpdatedScoreToFactories(request, 0); 2265 } 2266 } 2267 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2268 removeDataActivityTracking(nai); 2269 notifyLockdownVpn(nai); 2270 requestNetworkTransitionWakelock(nai.name()); 2271 } 2272 mLegacyTypeTracker.remove(nai, wasDefault); 2273 rematchAllNetworksAndRequests(null, 0); 2274 if (wasDefault && getDefaultNetwork() == null) { 2275 // Log that we lost the default network and there is no replacement. 2276 logDefaultNetworkEvent(null, nai); 2277 } 2278 if (nai.created) { 2279 // Tell netd to clean up the configuration for this network 2280 // (routing rules, DNS, etc). 2281 // This may be slow as it requires a lot of netd shelling out to ip and 2282 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2283 // after we've rematched networks with requests which should make a potential 2284 // fallback network the default or requested a new network from the 2285 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2286 // long time. 2287 try { 2288 mNetd.removeNetwork(nai.network.netId); 2289 } catch (Exception e) { 2290 loge("Exception removing network: " + e); 2291 } 2292 } 2293 synchronized (mNetworkForNetId) { 2294 mNetIdInUse.delete(nai.network.netId); 2295 } 2296 } else { 2297 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2298 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2299 } 2300 } 2301 2302 // If this method proves to be too slow then we can maintain a separate 2303 // pendingIntent => NetworkRequestInfo map. 2304 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2305 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2306 Intent intent = pendingIntent.getIntent(); 2307 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2308 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2309 if (existingPendingIntent != null && 2310 existingPendingIntent.getIntent().filterEquals(intent)) { 2311 return entry.getValue(); 2312 } 2313 } 2314 return null; 2315 } 2316 2317 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2318 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2319 2320 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2321 if (existingRequest != null) { // remove the existing request. 2322 if (DBG) log("Replacing " + existingRequest.request + " with " 2323 + nri.request + " because their intents matched."); 2324 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2325 } 2326 handleRegisterNetworkRequest(nri); 2327 } 2328 2329 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2330 mNetworkRequests.put(nri.request, nri); 2331 mNetworkRequestInfoLogs.log("REGISTER " + nri); 2332 if (!nri.isRequest()) { 2333 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2334 if (nri.request.networkCapabilities.hasSignalStrength() && 2335 network.satisfiesImmutableCapabilitiesOf(nri.request)) { 2336 updateSignalStrengthThresholds(network, "REGISTER", nri.request); 2337 } 2338 } 2339 } 2340 rematchAllNetworksAndRequests(null, 0); 2341 if (nri.isRequest() && mNetworkForRequestId.get(nri.request.requestId) == null) { 2342 sendUpdatedScoreToFactories(nri.request, 0); 2343 } 2344 } 2345 2346 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2347 int callingUid) { 2348 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2349 if (nri != null) { 2350 handleReleaseNetworkRequest(nri.request, callingUid); 2351 } 2352 } 2353 2354 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2355 // This is whether it is satisfying any NetworkRequests or were it to become validated, 2356 // would it have a chance of satisfying any NetworkRequests. 2357 private boolean unneeded(NetworkAgentInfo nai) { 2358 if (!nai.everConnected || nai.isVPN() || nai.lingering) return false; 2359 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2360 // If this Network is already the highest scoring Network for a request, or if 2361 // there is hope for it to become one if it validated, then it is needed. 2362 if (nri.isRequest() && nai.satisfies(nri.request) && 2363 (nai.networkRequests.get(nri.request.requestId) != null || 2364 // Note that this catches two important cases: 2365 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2366 // is currently satisfying the request. This is desirable when 2367 // cellular ends up validating but WiFi does not. 2368 // 2. Unvalidated WiFi will not be reaped when validated cellular 2369 // is currently satisfying the request. This is desirable when 2370 // WiFi ends up validating and out scoring cellular. 2371 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2372 nai.getCurrentScoreAsValidated())) { 2373 return false; 2374 } 2375 } 2376 return true; 2377 } 2378 2379 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2380 NetworkRequestInfo nri = mNetworkRequests.get(request); 2381 if (nri != null) { 2382 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2383 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2384 return; 2385 } 2386 if (VDBG || (DBG && nri.isRequest())) log("releasing NetworkRequest " + request); 2387 nri.unlinkDeathRecipient(); 2388 mNetworkRequests.remove(request); 2389 synchronized (mUidToNetworkRequestCount) { 2390 int requests = mUidToNetworkRequestCount.get(nri.mUid, 0); 2391 if (requests < 1) { 2392 Slog.wtf(TAG, "BUG: too small request count " + requests + " for UID " + 2393 nri.mUid); 2394 } else if (requests == 1) { 2395 mUidToNetworkRequestCount.removeAt( 2396 mUidToNetworkRequestCount.indexOfKey(nri.mUid)); 2397 } else { 2398 mUidToNetworkRequestCount.put(nri.mUid, requests - 1); 2399 } 2400 } 2401 mNetworkRequestInfoLogs.log("RELEASE " + nri); 2402 if (nri.isRequest()) { 2403 // Find all networks that are satisfying this request and remove the request 2404 // from their request lists. 2405 // TODO - it's my understanding that for a request there is only a single 2406 // network satisfying it, so this loop is wasteful 2407 boolean wasKept = false; 2408 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2409 if (nai.networkRequests.get(nri.request.requestId) != null) { 2410 nai.networkRequests.remove(nri.request.requestId); 2411 if (VDBG) { 2412 log(" Removing from current network " + nai.name() + 2413 ", leaving " + nai.networkRequests.size() + 2414 " requests."); 2415 } 2416 if (unneeded(nai)) { 2417 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2418 teardownUnneededNetwork(nai); 2419 } else { 2420 // suspect there should only be one pass through here 2421 // but if any were kept do the check below 2422 wasKept |= true; 2423 } 2424 } 2425 } 2426 2427 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2428 if (nai != null) { 2429 mNetworkForRequestId.remove(nri.request.requestId); 2430 } 2431 // Maintain the illusion. When this request arrived, we might have pretended 2432 // that a network connected to serve it, even though the network was already 2433 // connected. Now that this request has gone away, we might have to pretend 2434 // that the network disconnected. LegacyTypeTracker will generate that 2435 // phantom disconnect for this type. 2436 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2437 boolean doRemove = true; 2438 if (wasKept) { 2439 // check if any of the remaining requests for this network are for the 2440 // same legacy type - if so, don't remove the nai 2441 for (int i = 0; i < nai.networkRequests.size(); i++) { 2442 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2443 if (otherRequest.legacyType == nri.request.legacyType && 2444 isRequest(otherRequest)) { 2445 if (DBG) log(" still have other legacy request - leaving"); 2446 doRemove = false; 2447 } 2448 } 2449 } 2450 2451 if (doRemove) { 2452 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2453 } 2454 } 2455 2456 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2457 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2458 nri.request); 2459 } 2460 } else { 2461 // listens don't have a singular affectedNetwork. Check all networks to see 2462 // if this listen request applies and remove it. 2463 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2464 nai.networkRequests.remove(nri.request.requestId); 2465 if (nri.request.networkCapabilities.hasSignalStrength() && 2466 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 2467 updateSignalStrengthThresholds(nai, "RELEASE", nri.request); 2468 } 2469 } 2470 } 2471 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2472 } 2473 } 2474 2475 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2476 enforceConnectivityInternalPermission(); 2477 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2478 accept ? 1 : 0, always ? 1: 0, network)); 2479 } 2480 2481 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2482 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2483 " accept=" + accept + " always=" + always); 2484 2485 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2486 if (nai == null) { 2487 // Nothing to do. 2488 return; 2489 } 2490 2491 if (nai.everValidated) { 2492 // The network validated while the dialog box was up. Take no action. 2493 return; 2494 } 2495 2496 if (!nai.networkMisc.explicitlySelected) { 2497 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2498 } 2499 2500 if (accept != nai.networkMisc.acceptUnvalidated) { 2501 int oldScore = nai.getCurrentScore(); 2502 nai.networkMisc.acceptUnvalidated = accept; 2503 rematchAllNetworksAndRequests(nai, oldScore); 2504 sendUpdatedScoreToFactories(nai); 2505 } 2506 2507 if (always) { 2508 nai.asyncChannel.sendMessage( 2509 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2510 } 2511 2512 if (!accept) { 2513 // Tell the NetworkAgent to not automatically reconnect to the network. 2514 nai.asyncChannel.sendMessage(NetworkAgent.CMD_PREVENT_AUTOMATIC_RECONNECT); 2515 // Teardown the nework. 2516 teardownUnneededNetwork(nai); 2517 } 2518 2519 } 2520 2521 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2522 if (VDBG) log("scheduleUnvalidatedPrompt " + nai.network); 2523 mHandler.sendMessageDelayed( 2524 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2525 PROMPT_UNVALIDATED_DELAY_MS); 2526 } 2527 2528 private void handlePromptUnvalidated(Network network) { 2529 if (VDBG) log("handlePromptUnvalidated " + network); 2530 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2531 2532 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2533 // we haven't already been told to switch to it regardless of whether it validated or not. 2534 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2535 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2536 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2537 return; 2538 } 2539 2540 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2541 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2542 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2543 intent.setClassName("com.android.settings", 2544 "com.android.settings.wifi.WifiNoInternetDialog"); 2545 2546 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2547 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2548 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2549 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent, true); 2550 } 2551 2552 private class InternalHandler extends Handler { 2553 public InternalHandler(Looper looper) { 2554 super(looper); 2555 } 2556 2557 @Override 2558 public void handleMessage(Message msg) { 2559 switch (msg.what) { 2560 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2561 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2562 String causedBy = null; 2563 synchronized (ConnectivityService.this) { 2564 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2565 mNetTransitionWakeLock.isHeld()) { 2566 mNetTransitionWakeLock.release(); 2567 causedBy = mNetTransitionWakeLockCausedBy; 2568 } else { 2569 break; 2570 } 2571 } 2572 if (VDBG) { 2573 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2574 log("Failed to find a new network - expiring NetTransition Wakelock"); 2575 } else { 2576 log("NetTransition Wakelock (" + 2577 (causedBy == null ? "unknown" : causedBy) + 2578 " cleared because we found a replacement network"); 2579 } 2580 } 2581 break; 2582 } 2583 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2584 handleDeprecatedGlobalHttpProxy(); 2585 break; 2586 } 2587 case EVENT_PROXY_HAS_CHANGED: { 2588 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2589 break; 2590 } 2591 case EVENT_REGISTER_NETWORK_FACTORY: { 2592 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2593 break; 2594 } 2595 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2596 handleUnregisterNetworkFactory((Messenger)msg.obj); 2597 break; 2598 } 2599 case EVENT_REGISTER_NETWORK_AGENT: { 2600 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2601 break; 2602 } 2603 case EVENT_REGISTER_NETWORK_REQUEST: 2604 case EVENT_REGISTER_NETWORK_LISTENER: { 2605 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2606 break; 2607 } 2608 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2609 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2610 handleRegisterNetworkRequestWithIntent(msg); 2611 break; 2612 } 2613 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2614 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2615 break; 2616 } 2617 case EVENT_RELEASE_NETWORK_REQUEST: { 2618 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2619 break; 2620 } 2621 case EVENT_SET_ACCEPT_UNVALIDATED: { 2622 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2623 break; 2624 } 2625 case EVENT_PROMPT_UNVALIDATED: { 2626 handlePromptUnvalidated((Network) msg.obj); 2627 break; 2628 } 2629 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2630 handleMobileDataAlwaysOn(); 2631 break; 2632 } 2633 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2634 case NetworkAgent.CMD_START_PACKET_KEEPALIVE: { 2635 mKeepaliveTracker.handleStartKeepalive(msg); 2636 break; 2637 } 2638 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2639 case NetworkAgent.CMD_STOP_PACKET_KEEPALIVE: { 2640 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork((Network) msg.obj); 2641 int slot = msg.arg1; 2642 int reason = msg.arg2; 2643 mKeepaliveTracker.handleStopKeepalive(nai, slot, reason); 2644 break; 2645 } 2646 case EVENT_SYSTEM_READY: { 2647 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2648 nai.networkMonitor.systemReady = true; 2649 } 2650 break; 2651 } 2652 } 2653 } 2654 } 2655 2656 // javadoc from interface 2657 public int tether(String iface) { 2658 ConnectivityManager.enforceTetherChangePermission(mContext); 2659 if (isTetheringSupported()) { 2660 final int status = mTethering.tether(iface); 2661 if (status == ConnectivityManager.TETHER_ERROR_NO_ERROR) { 2662 try { 2663 mPolicyManager.onTetheringChanged(iface, true); 2664 } catch (RemoteException e) { 2665 } 2666 } 2667 return status; 2668 } else { 2669 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2670 } 2671 } 2672 2673 // javadoc from interface 2674 public int untether(String iface) { 2675 ConnectivityManager.enforceTetherChangePermission(mContext); 2676 2677 if (isTetheringSupported()) { 2678 final int status = mTethering.untether(iface); 2679 if (status == ConnectivityManager.TETHER_ERROR_NO_ERROR) { 2680 try { 2681 mPolicyManager.onTetheringChanged(iface, false); 2682 } catch (RemoteException e) { 2683 } 2684 } 2685 return status; 2686 } else { 2687 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2688 } 2689 } 2690 2691 // javadoc from interface 2692 public int getLastTetherError(String iface) { 2693 enforceTetherAccessPermission(); 2694 2695 if (isTetheringSupported()) { 2696 return mTethering.getLastTetherError(iface); 2697 } else { 2698 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2699 } 2700 } 2701 2702 // TODO - proper iface API for selection by property, inspection, etc 2703 public String[] getTetherableUsbRegexs() { 2704 enforceTetherAccessPermission(); 2705 if (isTetheringSupported()) { 2706 return mTethering.getTetherableUsbRegexs(); 2707 } else { 2708 return new String[0]; 2709 } 2710 } 2711 2712 public String[] getTetherableWifiRegexs() { 2713 enforceTetherAccessPermission(); 2714 if (isTetheringSupported()) { 2715 return mTethering.getTetherableWifiRegexs(); 2716 } else { 2717 return new String[0]; 2718 } 2719 } 2720 2721 public String[] getTetherableBluetoothRegexs() { 2722 enforceTetherAccessPermission(); 2723 if (isTetheringSupported()) { 2724 return mTethering.getTetherableBluetoothRegexs(); 2725 } else { 2726 return new String[0]; 2727 } 2728 } 2729 2730 public int setUsbTethering(boolean enable) { 2731 ConnectivityManager.enforceTetherChangePermission(mContext); 2732 if (isTetheringSupported()) { 2733 return mTethering.setUsbTethering(enable); 2734 } else { 2735 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2736 } 2737 } 2738 2739 // TODO - move iface listing, queries, etc to new module 2740 // javadoc from interface 2741 public String[] getTetherableIfaces() { 2742 enforceTetherAccessPermission(); 2743 return mTethering.getTetherableIfaces(); 2744 } 2745 2746 public String[] getTetheredIfaces() { 2747 enforceTetherAccessPermission(); 2748 return mTethering.getTetheredIfaces(); 2749 } 2750 2751 public String[] getTetheringErroredIfaces() { 2752 enforceTetherAccessPermission(); 2753 return mTethering.getErroredIfaces(); 2754 } 2755 2756 public String[] getTetheredDhcpRanges() { 2757 enforceConnectivityInternalPermission(); 2758 return mTethering.getTetheredDhcpRanges(); 2759 } 2760 2761 // if ro.tether.denied = true we default to no tethering 2762 // gservices could set the secure setting to 1 though to enable it on a build where it 2763 // had previously been turned off. 2764 @Override 2765 public boolean isTetheringSupported() { 2766 enforceTetherAccessPermission(); 2767 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2768 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2769 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2770 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2771 return tetherEnabledInSettings && mUserManager.isAdminUser() && 2772 ((mTethering.getTetherableUsbRegexs().length != 0 || 2773 mTethering.getTetherableWifiRegexs().length != 0 || 2774 mTethering.getTetherableBluetoothRegexs().length != 0) && 2775 mTethering.getUpstreamIfaceTypes().length != 0); 2776 } 2777 2778 @Override 2779 public void startTethering(int type, ResultReceiver receiver, 2780 boolean showProvisioningUi) { 2781 ConnectivityManager.enforceTetherChangePermission(mContext); 2782 if (!isTetheringSupported()) { 2783 receiver.send(ConnectivityManager.TETHER_ERROR_UNSUPPORTED, null); 2784 return; 2785 } 2786 mTethering.startTethering(type, receiver, showProvisioningUi); 2787 } 2788 2789 @Override 2790 public void stopTethering(int type) { 2791 ConnectivityManager.enforceTetherChangePermission(mContext); 2792 mTethering.stopTethering(type); 2793 } 2794 2795 // Called when we lose the default network and have no replacement yet. 2796 // This will automatically be cleared after X seconds or a new default network 2797 // becomes CONNECTED, whichever happens first. The timer is started by the 2798 // first caller and not restarted by subsequent callers. 2799 private void requestNetworkTransitionWakelock(String forWhom) { 2800 int serialNum = 0; 2801 synchronized (this) { 2802 if (mNetTransitionWakeLock.isHeld()) return; 2803 serialNum = ++mNetTransitionWakeLockSerialNumber; 2804 mNetTransitionWakeLock.acquire(); 2805 mNetTransitionWakeLockCausedBy = forWhom; 2806 } 2807 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2808 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2809 mNetTransitionWakeLockTimeout); 2810 return; 2811 } 2812 2813 // 100 percent is full good, 0 is full bad. 2814 public void reportInetCondition(int networkType, int percentage) { 2815 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2816 if (nai == null) return; 2817 reportNetworkConnectivity(nai.network, percentage > 50); 2818 } 2819 2820 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2821 enforceAccessPermission(); 2822 enforceInternetPermission(); 2823 2824 NetworkAgentInfo nai; 2825 if (network == null) { 2826 nai = getDefaultNetwork(); 2827 } else { 2828 nai = getNetworkAgentInfoForNetwork(network); 2829 } 2830 if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || 2831 nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { 2832 return; 2833 } 2834 // Revalidate if the app report does not match our current validated state. 2835 if (hasConnectivity == nai.lastValidated) return; 2836 final int uid = Binder.getCallingUid(); 2837 if (DBG) { 2838 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2839 ") by " + uid); 2840 } 2841 synchronized (nai) { 2842 // Validating a network that has not yet connected could result in a call to 2843 // rematchNetworkAndRequests() which is not meant to work on such networks. 2844 if (!nai.everConnected) return; 2845 2846 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid, false)) return; 2847 2848 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2849 } 2850 } 2851 2852 private ProxyInfo getDefaultProxy() { 2853 // this information is already available as a world read/writable jvm property 2854 // so this API change wouldn't have a benifit. It also breaks the passing 2855 // of proxy info to all the JVMs. 2856 // enforceAccessPermission(); 2857 synchronized (mProxyLock) { 2858 ProxyInfo ret = mGlobalProxy; 2859 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2860 return ret; 2861 } 2862 } 2863 2864 public ProxyInfo getProxyForNetwork(Network network) { 2865 if (network == null) return getDefaultProxy(); 2866 final ProxyInfo globalProxy = getGlobalProxy(); 2867 if (globalProxy != null) return globalProxy; 2868 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2869 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2870 // caller may not have. 2871 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2872 if (nai == null) return null; 2873 synchronized (nai) { 2874 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2875 if (proxyInfo == null) return null; 2876 return new ProxyInfo(proxyInfo); 2877 } 2878 } 2879 2880 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2881 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2882 // proxy is null then there is no proxy in place). 2883 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2884 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2885 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2886 proxy = null; 2887 } 2888 return proxy; 2889 } 2890 2891 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2892 // better for determining if a new proxy broadcast is necessary: 2893 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2894 // avoid unnecessary broadcasts. 2895 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2896 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2897 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2898 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2899 // all set. 2900 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2901 a = canonicalizeProxyInfo(a); 2902 b = canonicalizeProxyInfo(b); 2903 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2904 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2905 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2906 } 2907 2908 public void setGlobalProxy(ProxyInfo proxyProperties) { 2909 enforceConnectivityInternalPermission(); 2910 2911 synchronized (mProxyLock) { 2912 if (proxyProperties == mGlobalProxy) return; 2913 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2914 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2915 2916 String host = ""; 2917 int port = 0; 2918 String exclList = ""; 2919 String pacFileUrl = ""; 2920 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2921 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2922 if (!proxyProperties.isValid()) { 2923 if (DBG) 2924 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2925 return; 2926 } 2927 mGlobalProxy = new ProxyInfo(proxyProperties); 2928 host = mGlobalProxy.getHost(); 2929 port = mGlobalProxy.getPort(); 2930 exclList = mGlobalProxy.getExclusionListAsString(); 2931 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2932 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2933 } 2934 } else { 2935 mGlobalProxy = null; 2936 } 2937 ContentResolver res = mContext.getContentResolver(); 2938 final long token = Binder.clearCallingIdentity(); 2939 try { 2940 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2941 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2942 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2943 exclList); 2944 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2945 } finally { 2946 Binder.restoreCallingIdentity(token); 2947 } 2948 2949 if (mGlobalProxy == null) { 2950 proxyProperties = mDefaultProxy; 2951 } 2952 sendProxyBroadcast(proxyProperties); 2953 } 2954 } 2955 2956 private void loadGlobalProxy() { 2957 ContentResolver res = mContext.getContentResolver(); 2958 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2959 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2960 String exclList = Settings.Global.getString(res, 2961 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2962 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2963 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2964 ProxyInfo proxyProperties; 2965 if (!TextUtils.isEmpty(pacFileUrl)) { 2966 proxyProperties = new ProxyInfo(pacFileUrl); 2967 } else { 2968 proxyProperties = new ProxyInfo(host, port, exclList); 2969 } 2970 if (!proxyProperties.isValid()) { 2971 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2972 return; 2973 } 2974 2975 synchronized (mProxyLock) { 2976 mGlobalProxy = proxyProperties; 2977 } 2978 } 2979 } 2980 2981 public ProxyInfo getGlobalProxy() { 2982 // this information is already available as a world read/writable jvm property 2983 // so this API change wouldn't have a benifit. It also breaks the passing 2984 // of proxy info to all the JVMs. 2985 // enforceAccessPermission(); 2986 synchronized (mProxyLock) { 2987 return mGlobalProxy; 2988 } 2989 } 2990 2991 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2992 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2993 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2994 proxy = null; 2995 } 2996 synchronized (mProxyLock) { 2997 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2998 if (mDefaultProxy == proxy) return; // catches repeated nulls 2999 if (proxy != null && !proxy.isValid()) { 3000 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3001 return; 3002 } 3003 3004 // This call could be coming from the PacManager, containing the port of the local 3005 // proxy. If this new proxy matches the global proxy then copy this proxy to the 3006 // global (to get the correct local port), and send a broadcast. 3007 // TODO: Switch PacManager to have its own message to send back rather than 3008 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 3009 if ((mGlobalProxy != null) && (proxy != null) 3010 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 3011 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 3012 mGlobalProxy = proxy; 3013 sendProxyBroadcast(mGlobalProxy); 3014 return; 3015 } 3016 mDefaultProxy = proxy; 3017 3018 if (mGlobalProxy != null) return; 3019 if (!mDefaultProxyDisabled) { 3020 sendProxyBroadcast(proxy); 3021 } 3022 } 3023 } 3024 3025 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 3026 // This method gets called when any network changes proxy, but the broadcast only ever contains 3027 // the default proxy (even if it hasn't changed). 3028 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 3029 // world where an app might be bound to a non-default network. 3030 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3031 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 3032 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 3033 3034 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 3035 sendProxyBroadcast(getDefaultProxy()); 3036 } 3037 } 3038 3039 private void handleDeprecatedGlobalHttpProxy() { 3040 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3041 Settings.Global.HTTP_PROXY); 3042 if (!TextUtils.isEmpty(proxy)) { 3043 String data[] = proxy.split(":"); 3044 if (data.length == 0) { 3045 return; 3046 } 3047 3048 String proxyHost = data[0]; 3049 int proxyPort = 8080; 3050 if (data.length > 1) { 3051 try { 3052 proxyPort = Integer.parseInt(data[1]); 3053 } catch (NumberFormatException e) { 3054 return; 3055 } 3056 } 3057 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 3058 setGlobalProxy(p); 3059 } 3060 } 3061 3062 private void sendProxyBroadcast(ProxyInfo proxy) { 3063 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 3064 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3065 if (DBG) log("sending Proxy Broadcast for " + proxy); 3066 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3067 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3068 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3069 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3070 final long ident = Binder.clearCallingIdentity(); 3071 try { 3072 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3073 } finally { 3074 Binder.restoreCallingIdentity(ident); 3075 } 3076 } 3077 3078 private static class SettingsObserver extends ContentObserver { 3079 final private HashMap<Uri, Integer> mUriEventMap; 3080 final private Context mContext; 3081 final private Handler mHandler; 3082 3083 SettingsObserver(Context context, Handler handler) { 3084 super(null); 3085 mUriEventMap = new HashMap<Uri, Integer>(); 3086 mContext = context; 3087 mHandler = handler; 3088 } 3089 3090 void observe(Uri uri, int what) { 3091 mUriEventMap.put(uri, what); 3092 final ContentResolver resolver = mContext.getContentResolver(); 3093 resolver.registerContentObserver(uri, false, this); 3094 } 3095 3096 @Override 3097 public void onChange(boolean selfChange) { 3098 Slog.wtf(TAG, "Should never be reached."); 3099 } 3100 3101 @Override 3102 public void onChange(boolean selfChange, Uri uri) { 3103 final Integer what = mUriEventMap.get(uri); 3104 if (what != null) { 3105 mHandler.obtainMessage(what.intValue()).sendToTarget(); 3106 } else { 3107 loge("No matching event to send for URI=" + uri); 3108 } 3109 } 3110 } 3111 3112 private static void log(String s) { 3113 Slog.d(TAG, s); 3114 } 3115 3116 private static void loge(String s) { 3117 Slog.e(TAG, s); 3118 } 3119 3120 private static <T> T checkNotNull(T value, String message) { 3121 if (value == null) { 3122 throw new NullPointerException(message); 3123 } 3124 return value; 3125 } 3126 3127 /** 3128 * Prepare for a VPN application. 3129 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3130 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3131 * 3132 * @param oldPackage Package name of the application which currently controls VPN, which will 3133 * be replaced. If there is no such application, this should should either be 3134 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3135 * @param newPackage Package name of the application which should gain control of VPN, or 3136 * {@code null} to disable. 3137 * @param userId User for whom to prepare the new VPN. 3138 * 3139 * @hide 3140 */ 3141 @Override 3142 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3143 int userId) { 3144 enforceCrossUserPermission(userId); 3145 throwIfLockdownEnabled(); 3146 3147 synchronized(mVpns) { 3148 Vpn vpn = mVpns.get(userId); 3149 if (vpn != null) { 3150 return vpn.prepare(oldPackage, newPackage); 3151 } else { 3152 return false; 3153 } 3154 } 3155 } 3156 3157 /** 3158 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3159 * This method is used by system-privileged apps. 3160 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3161 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3162 * 3163 * @param packageName The package for which authorization state should change. 3164 * @param userId User for whom {@code packageName} is installed. 3165 * @param authorized {@code true} if this app should be able to start a VPN connection without 3166 * explicit user approval, {@code false} if not. 3167 * 3168 * @hide 3169 */ 3170 @Override 3171 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3172 enforceCrossUserPermission(userId); 3173 3174 synchronized(mVpns) { 3175 Vpn vpn = mVpns.get(userId); 3176 if (vpn != null) { 3177 vpn.setPackageAuthorization(packageName, authorized); 3178 } 3179 } 3180 } 3181 3182 /** 3183 * Configure a TUN interface and return its file descriptor. Parameters 3184 * are encoded and opaque to this class. This method is used by VpnBuilder 3185 * and not available in ConnectivityManager. Permissions are checked in 3186 * Vpn class. 3187 * @hide 3188 */ 3189 @Override 3190 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3191 throwIfLockdownEnabled(); 3192 int user = UserHandle.getUserId(Binder.getCallingUid()); 3193 synchronized(mVpns) { 3194 return mVpns.get(user).establish(config); 3195 } 3196 } 3197 3198 /** 3199 * Start legacy VPN, controlling native daemons as needed. Creates a 3200 * secondary thread to perform connection work, returning quickly. 3201 */ 3202 @Override 3203 public void startLegacyVpn(VpnProfile profile) { 3204 throwIfLockdownEnabled(); 3205 final LinkProperties egress = getActiveLinkProperties(); 3206 if (egress == null) { 3207 throw new IllegalStateException("Missing active network connection"); 3208 } 3209 int user = UserHandle.getUserId(Binder.getCallingUid()); 3210 synchronized(mVpns) { 3211 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3212 } 3213 } 3214 3215 /** 3216 * Return the information of the ongoing legacy VPN. This method is used 3217 * by VpnSettings and not available in ConnectivityManager. Permissions 3218 * are checked in Vpn class. 3219 */ 3220 @Override 3221 public LegacyVpnInfo getLegacyVpnInfo(int userId) { 3222 enforceCrossUserPermission(userId); 3223 if (mLockdownEnabled) { 3224 return null; 3225 } 3226 3227 synchronized(mVpns) { 3228 return mVpns.get(userId).getLegacyVpnInfo(); 3229 } 3230 } 3231 3232 /** 3233 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3234 * and not available in ConnectivityManager. 3235 */ 3236 @Override 3237 public VpnInfo[] getAllVpnInfo() { 3238 enforceConnectivityInternalPermission(); 3239 if (mLockdownEnabled) { 3240 return new VpnInfo[0]; 3241 } 3242 3243 synchronized(mVpns) { 3244 List<VpnInfo> infoList = new ArrayList<>(); 3245 for (int i = 0; i < mVpns.size(); i++) { 3246 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3247 if (info != null) { 3248 infoList.add(info); 3249 } 3250 } 3251 return infoList.toArray(new VpnInfo[infoList.size()]); 3252 } 3253 } 3254 3255 /** 3256 * @return VPN information for accounting, or null if we can't retrieve all required 3257 * information, e.g primary underlying iface. 3258 */ 3259 @Nullable 3260 private VpnInfo createVpnInfo(Vpn vpn) { 3261 VpnInfo info = vpn.getVpnInfo(); 3262 if (info == null) { 3263 return null; 3264 } 3265 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3266 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3267 // the underlyingNetworks list. 3268 if (underlyingNetworks == null) { 3269 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3270 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3271 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3272 } 3273 } else if (underlyingNetworks.length > 0) { 3274 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3275 if (linkProperties != null) { 3276 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3277 } 3278 } 3279 return info.primaryUnderlyingIface == null ? null : info; 3280 } 3281 3282 /** 3283 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3284 * VpnDialogs and not available in ConnectivityManager. 3285 * Permissions are checked in Vpn class. 3286 * @hide 3287 */ 3288 @Override 3289 public VpnConfig getVpnConfig(int userId) { 3290 enforceCrossUserPermission(userId); 3291 synchronized(mVpns) { 3292 Vpn vpn = mVpns.get(userId); 3293 if (vpn != null) { 3294 return vpn.getVpnConfig(); 3295 } else { 3296 return null; 3297 } 3298 } 3299 } 3300 3301 @Override 3302 public boolean updateLockdownVpn() { 3303 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3304 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3305 return false; 3306 } 3307 3308 // Tear down existing lockdown if profile was removed 3309 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3310 if (mLockdownEnabled) { 3311 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3312 final VpnProfile profile = VpnProfile.decode( 3313 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3314 if (profile == null) { 3315 Slog.e(TAG, "Lockdown VPN configured invalid profile " + profileName); 3316 setLockdownTracker(null); 3317 return true; 3318 } 3319 int user = UserHandle.getUserId(Binder.getCallingUid()); 3320 synchronized(mVpns) { 3321 Vpn vpn = mVpns.get(user); 3322 if (vpn == null) { 3323 Slog.w(TAG, "VPN for user " + user + " not ready yet. Skipping lockdown"); 3324 return false; 3325 } 3326 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, vpn, profile)); 3327 } 3328 } else { 3329 setLockdownTracker(null); 3330 } 3331 3332 return true; 3333 } 3334 3335 /** 3336 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3337 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3338 */ 3339 private void setLockdownTracker(LockdownVpnTracker tracker) { 3340 // Shutdown any existing tracker 3341 final LockdownVpnTracker existing = mLockdownTracker; 3342 mLockdownTracker = null; 3343 if (existing != null) { 3344 existing.shutdown(); 3345 } 3346 3347 try { 3348 if (tracker != null) { 3349 mNetd.setFirewallEnabled(true); 3350 mNetd.setFirewallInterfaceRule("lo", true); 3351 mLockdownTracker = tracker; 3352 mLockdownTracker.init(); 3353 } else { 3354 mNetd.setFirewallEnabled(false); 3355 } 3356 } catch (RemoteException e) { 3357 // ignored; NMS lives inside system_server 3358 } 3359 } 3360 3361 private void throwIfLockdownEnabled() { 3362 if (mLockdownEnabled) { 3363 throw new IllegalStateException("Unavailable in lockdown mode"); 3364 } 3365 } 3366 3367 /** 3368 * Sets up or tears down the always-on VPN for user {@param user} as appropriate. 3369 * 3370 * @return {@code false} in case of errors; {@code true} otherwise. 3371 */ 3372 private boolean updateAlwaysOnVpn(int user) { 3373 final String lockdownPackage = getAlwaysOnVpnPackage(user); 3374 if (lockdownPackage == null) { 3375 return true; 3376 } 3377 3378 // Create an intent to start the VPN service declared in the app's manifest. 3379 Intent serviceIntent = new Intent(VpnConfig.SERVICE_INTERFACE); 3380 serviceIntent.setPackage(lockdownPackage); 3381 3382 try { 3383 return mContext.startServiceAsUser(serviceIntent, UserHandle.of(user)) != null; 3384 } catch (RuntimeException e) { 3385 return false; 3386 } 3387 } 3388 3389 @Override 3390 public boolean setAlwaysOnVpnPackage(int userId, String packageName, boolean lockdown) { 3391 enforceConnectivityInternalPermission(); 3392 enforceCrossUserPermission(userId); 3393 3394 // Can't set always-on VPN if legacy VPN is already in lockdown mode. 3395 if (LockdownVpnTracker.isEnabled()) { 3396 return false; 3397 } 3398 3399 // If the current VPN package is the same as the new one, this is a no-op 3400 final String oldPackage = getAlwaysOnVpnPackage(userId); 3401 if (TextUtils.equals(oldPackage, packageName)) { 3402 return true; 3403 } 3404 3405 synchronized (mVpns) { 3406 Vpn vpn = mVpns.get(userId); 3407 if (vpn == null) { 3408 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3409 return false; 3410 } 3411 if (!vpn.setAlwaysOnPackage(packageName)) { 3412 return false; 3413 } 3414 if (!updateAlwaysOnVpn(userId)) { 3415 vpn.setAlwaysOnPackage(null); 3416 return false; 3417 } 3418 } 3419 return true; 3420 } 3421 3422 @Override 3423 public String getAlwaysOnVpnPackage(int userId) { 3424 enforceConnectivityInternalPermission(); 3425 enforceCrossUserPermission(userId); 3426 3427 synchronized (mVpns) { 3428 Vpn vpn = mVpns.get(userId); 3429 if (vpn == null) { 3430 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3431 return null; 3432 } 3433 return vpn.getAlwaysOnPackage(); 3434 } 3435 } 3436 3437 @Override 3438 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3439 // TODO: Remove? Any reason to trigger a provisioning check? 3440 return -1; 3441 } 3442 3443 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3444 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3445 3446 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3447 Intent intent = new Intent(action); 3448 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3449 // Concatenate the range of types onto the range of NetIDs. 3450 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3451 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3452 networkType, null, pendingIntent, false); 3453 } 3454 3455 /** 3456 * Show or hide network provisioning notifications. 3457 * 3458 * We use notifications for two purposes: to notify that a network requires sign in 3459 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3460 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3461 * particular network we can display the notification type that was most recently requested. 3462 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3463 * might first display NO_INTERNET, and then when the captive portal check completes, display 3464 * SIGN_IN. 3465 * 3466 * @param id an identifier that uniquely identifies this notification. This must match 3467 * between show and hide calls. We use the NetID value but for legacy callers 3468 * we concatenate the range of types with the range of NetIDs. 3469 */ 3470 private void setProvNotificationVisibleIntent(boolean visible, int id, 3471 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent, 3472 boolean highPriority) { 3473 if (VDBG || (DBG && visible)) { 3474 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3475 + " networkType=" + getNetworkTypeName(networkType) 3476 + " extraInfo=" + extraInfo + " highPriority=" + highPriority); 3477 } 3478 3479 Resources r = Resources.getSystem(); 3480 NotificationManager notificationManager = (NotificationManager) mContext 3481 .getSystemService(Context.NOTIFICATION_SERVICE); 3482 3483 if (visible) { 3484 CharSequence title; 3485 CharSequence details; 3486 int icon; 3487 if (notifyType == NotificationType.NO_INTERNET && 3488 networkType == ConnectivityManager.TYPE_WIFI) { 3489 title = r.getString(R.string.wifi_no_internet, 0); 3490 details = r.getString(R.string.wifi_no_internet_detailed); 3491 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3492 } else if (notifyType == NotificationType.SIGN_IN) { 3493 switch (networkType) { 3494 case ConnectivityManager.TYPE_WIFI: 3495 title = r.getString(R.string.wifi_available_sign_in, 0); 3496 details = r.getString(R.string.network_available_sign_in_detailed, 3497 extraInfo); 3498 icon = R.drawable.stat_notify_wifi_in_range; 3499 break; 3500 case ConnectivityManager.TYPE_MOBILE: 3501 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3502 title = r.getString(R.string.network_available_sign_in, 0); 3503 // TODO: Change this to pull from NetworkInfo once a printable 3504 // name has been added to it 3505 details = mTelephonyManager.getNetworkOperatorName(); 3506 icon = R.drawable.stat_notify_rssi_in_range; 3507 break; 3508 default: 3509 title = r.getString(R.string.network_available_sign_in, 0); 3510 details = r.getString(R.string.network_available_sign_in_detailed, 3511 extraInfo); 3512 icon = R.drawable.stat_notify_rssi_in_range; 3513 break; 3514 } 3515 } else { 3516 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3517 + getNetworkTypeName(networkType)); 3518 return; 3519 } 3520 3521 Notification notification = new Notification.Builder(mContext) 3522 .setWhen(0) 3523 .setSmallIcon(icon) 3524 .setAutoCancel(true) 3525 .setTicker(title) 3526 .setColor(mContext.getColor( 3527 com.android.internal.R.color.system_notification_accent_color)) 3528 .setContentTitle(title) 3529 .setContentText(details) 3530 .setContentIntent(intent) 3531 .setLocalOnly(true) 3532 .setPriority(highPriority ? 3533 Notification.PRIORITY_HIGH : 3534 Notification.PRIORITY_DEFAULT) 3535 .setDefaults(highPriority ? Notification.DEFAULT_ALL : 0) 3536 .setOnlyAlertOnce(true) 3537 .build(); 3538 3539 try { 3540 notificationManager.notify(NOTIFICATION_ID, id, notification); 3541 } catch (NullPointerException npe) { 3542 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3543 npe.printStackTrace(); 3544 } 3545 } else { 3546 try { 3547 notificationManager.cancel(NOTIFICATION_ID, id); 3548 } catch (NullPointerException npe) { 3549 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3550 npe.printStackTrace(); 3551 } 3552 } 3553 } 3554 3555 /** Location to an updatable file listing carrier provisioning urls. 3556 * An example: 3557 * 3558 * <?xml version="1.0" encoding="utf-8"?> 3559 * <provisioningUrls> 3560 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3561 * </provisioningUrls> 3562 */ 3563 private static final String PROVISIONING_URL_PATH = 3564 "/data/misc/radio/provisioning_urls.xml"; 3565 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3566 3567 /** XML tag for root element. */ 3568 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3569 /** XML tag for individual url */ 3570 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3571 /** XML attribute for mcc */ 3572 private static final String ATTR_MCC = "mcc"; 3573 /** XML attribute for mnc */ 3574 private static final String ATTR_MNC = "mnc"; 3575 3576 private String getProvisioningUrlBaseFromFile() { 3577 FileReader fileReader = null; 3578 XmlPullParser parser = null; 3579 Configuration config = mContext.getResources().getConfiguration(); 3580 3581 try { 3582 fileReader = new FileReader(mProvisioningUrlFile); 3583 parser = Xml.newPullParser(); 3584 parser.setInput(fileReader); 3585 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3586 3587 while (true) { 3588 XmlUtils.nextElement(parser); 3589 3590 String element = parser.getName(); 3591 if (element == null) break; 3592 3593 if (element.equals(TAG_PROVISIONING_URL)) { 3594 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3595 try { 3596 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3597 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3598 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3599 parser.next(); 3600 if (parser.getEventType() == XmlPullParser.TEXT) { 3601 return parser.getText(); 3602 } 3603 } 3604 } 3605 } catch (NumberFormatException e) { 3606 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3607 } 3608 } 3609 } 3610 return null; 3611 } catch (FileNotFoundException e) { 3612 loge("Carrier Provisioning Urls file not found"); 3613 } catch (XmlPullParserException e) { 3614 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3615 } catch (IOException e) { 3616 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3617 } finally { 3618 if (fileReader != null) { 3619 try { 3620 fileReader.close(); 3621 } catch (IOException e) {} 3622 } 3623 } 3624 return null; 3625 } 3626 3627 @Override 3628 public String getMobileProvisioningUrl() { 3629 enforceConnectivityInternalPermission(); 3630 String url = getProvisioningUrlBaseFromFile(); 3631 if (TextUtils.isEmpty(url)) { 3632 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3633 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3634 } else { 3635 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3636 } 3637 // populate the iccid, imei and phone number in the provisioning url. 3638 if (!TextUtils.isEmpty(url)) { 3639 String phoneNumber = mTelephonyManager.getLine1Number(); 3640 if (TextUtils.isEmpty(phoneNumber)) { 3641 phoneNumber = "0000000000"; 3642 } 3643 url = String.format(url, 3644 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3645 mTelephonyManager.getDeviceId() /* IMEI */, 3646 phoneNumber /* Phone numer */); 3647 } 3648 3649 return url; 3650 } 3651 3652 @Override 3653 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3654 String action) { 3655 enforceConnectivityInternalPermission(); 3656 final long ident = Binder.clearCallingIdentity(); 3657 try { 3658 setProvNotificationVisible(visible, networkType, action); 3659 } finally { 3660 Binder.restoreCallingIdentity(ident); 3661 } 3662 } 3663 3664 @Override 3665 public void setAirplaneMode(boolean enable) { 3666 enforceConnectivityInternalPermission(); 3667 final long ident = Binder.clearCallingIdentity(); 3668 try { 3669 final ContentResolver cr = mContext.getContentResolver(); 3670 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3671 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3672 intent.putExtra("state", enable); 3673 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3674 } finally { 3675 Binder.restoreCallingIdentity(ident); 3676 } 3677 } 3678 3679 private void onUserStart(int userId) { 3680 synchronized(mVpns) { 3681 Vpn userVpn = mVpns.get(userId); 3682 if (userVpn != null) { 3683 loge("Starting user already has a VPN"); 3684 return; 3685 } 3686 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3687 mVpns.put(userId, userVpn); 3688 } 3689 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3690 updateLockdownVpn(); 3691 } else { 3692 updateAlwaysOnVpn(userId); 3693 } 3694 } 3695 3696 private void onUserStop(int userId) { 3697 synchronized(mVpns) { 3698 Vpn userVpn = mVpns.get(userId); 3699 if (userVpn == null) { 3700 loge("Stopped user has no VPN"); 3701 return; 3702 } 3703 mVpns.delete(userId); 3704 } 3705 } 3706 3707 private void onUserAdded(int userId) { 3708 synchronized(mVpns) { 3709 final int vpnsSize = mVpns.size(); 3710 for (int i = 0; i < vpnsSize; i++) { 3711 Vpn vpn = mVpns.valueAt(i); 3712 vpn.onUserAdded(userId); 3713 } 3714 } 3715 } 3716 3717 private void onUserRemoved(int userId) { 3718 synchronized(mVpns) { 3719 final int vpnsSize = mVpns.size(); 3720 for (int i = 0; i < vpnsSize; i++) { 3721 Vpn vpn = mVpns.valueAt(i); 3722 vpn.onUserRemoved(userId); 3723 } 3724 } 3725 } 3726 3727 private void onUserUnlocked(int userId) { 3728 // User present may be sent because of an unlock, which might mean an unlocked keystore. 3729 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3730 updateLockdownVpn(); 3731 } else { 3732 updateAlwaysOnVpn(userId); 3733 } 3734 } 3735 3736 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3737 @Override 3738 public void onReceive(Context context, Intent intent) { 3739 final String action = intent.getAction(); 3740 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3741 if (userId == UserHandle.USER_NULL) return; 3742 3743 if (Intent.ACTION_USER_STARTED.equals(action)) { 3744 onUserStart(userId); 3745 } else if (Intent.ACTION_USER_STOPPED.equals(action)) { 3746 onUserStop(userId); 3747 } else if (Intent.ACTION_USER_ADDED.equals(action)) { 3748 onUserAdded(userId); 3749 } else if (Intent.ACTION_USER_REMOVED.equals(action)) { 3750 onUserRemoved(userId); 3751 } else if (Intent.ACTION_USER_UNLOCKED.equals(action)) { 3752 onUserUnlocked(userId); 3753 } 3754 } 3755 }; 3756 3757 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3758 new HashMap<Messenger, NetworkFactoryInfo>(); 3759 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3760 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3761 3762 private static final int MAX_NETWORK_REQUESTS_PER_UID = 100; 3763 // Map from UID to number of NetworkRequests that UID has filed. 3764 @GuardedBy("mUidToNetworkRequestCount") 3765 private final SparseIntArray mUidToNetworkRequestCount = new SparseIntArray(); 3766 3767 private static class NetworkFactoryInfo { 3768 public final String name; 3769 public final Messenger messenger; 3770 public final AsyncChannel asyncChannel; 3771 3772 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3773 this.name = name; 3774 this.messenger = messenger; 3775 this.asyncChannel = asyncChannel; 3776 } 3777 } 3778 3779 /** 3780 * A NetworkRequest as registered by an application can be one of three 3781 * types: 3782 * 3783 * - "listen", for which the framework will issue callbacks about any 3784 * and all networks that match the specified NetworkCapabilities, 3785 * 3786 * - "request", capable of causing a specific network to be created 3787 * first (e.g. a telephony DUN request), the framework will issue 3788 * callbacks about the single, highest scoring current network 3789 * (if any) that matches the specified NetworkCapabilities, or 3790 * 3791 * - "track the default network", a hybrid of the two designed such 3792 * that the framework will issue callbacks for the single, highest 3793 * scoring current network (if any) that matches the capabilities of 3794 * the default Internet request (mDefaultRequest), but which cannot 3795 * cause the framework to either create or retain the existence of 3796 * any specific network. 3797 * 3798 */ 3799 private static enum NetworkRequestType { 3800 LISTEN, 3801 TRACK_DEFAULT, 3802 REQUEST 3803 }; 3804 3805 /** 3806 * Tracks info about the requester. 3807 * Also used to notice when the calling process dies so we can self-expire 3808 */ 3809 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3810 final NetworkRequest request; 3811 final PendingIntent mPendingIntent; 3812 boolean mPendingIntentSent; 3813 private final IBinder mBinder; 3814 final int mPid; 3815 final int mUid; 3816 final Messenger messenger; 3817 private final NetworkRequestType mType; 3818 3819 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, NetworkRequestType type) { 3820 request = r; 3821 mPendingIntent = pi; 3822 messenger = null; 3823 mBinder = null; 3824 mPid = getCallingPid(); 3825 mUid = getCallingUid(); 3826 mType = type; 3827 enforceRequestCountLimit(); 3828 } 3829 3830 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, NetworkRequestType type) { 3831 super(); 3832 messenger = m; 3833 request = r; 3834 mBinder = binder; 3835 mPid = getCallingPid(); 3836 mUid = getCallingUid(); 3837 mType = type; 3838 mPendingIntent = null; 3839 enforceRequestCountLimit(); 3840 3841 try { 3842 mBinder.linkToDeath(this, 0); 3843 } catch (RemoteException e) { 3844 binderDied(); 3845 } 3846 } 3847 3848 private void enforceRequestCountLimit() { 3849 synchronized (mUidToNetworkRequestCount) { 3850 int networkRequests = mUidToNetworkRequestCount.get(mUid, 0) + 1; 3851 if (networkRequests >= MAX_NETWORK_REQUESTS_PER_UID) { 3852 throw new IllegalArgumentException("Too many NetworkRequests filed"); 3853 } 3854 mUidToNetworkRequestCount.put(mUid, networkRequests); 3855 } 3856 } 3857 3858 private String typeString() { 3859 switch (mType) { 3860 case LISTEN: return "Listen"; 3861 case REQUEST: return "Request"; 3862 case TRACK_DEFAULT: return "Track default"; 3863 default: 3864 return "unknown type"; 3865 } 3866 } 3867 3868 void unlinkDeathRecipient() { 3869 if (mBinder != null) { 3870 mBinder.unlinkToDeath(this, 0); 3871 } 3872 } 3873 3874 public void binderDied() { 3875 log("ConnectivityService NetworkRequestInfo binderDied(" + 3876 request + ", " + mBinder + ")"); 3877 releaseNetworkRequest(request); 3878 } 3879 3880 /** 3881 * Returns true iff. the contained NetworkRequest is one that: 3882 * 3883 * - should be associated with at most one satisfying network 3884 * at a time; 3885 * 3886 * - should cause a network to be kept up if it is the only network 3887 * which can satisfy the NetworkReqeust. 3888 * 3889 * For full detail of how isRequest() is used for pairing Networks with 3890 * NetworkRequests read rematchNetworkAndRequests(). 3891 * 3892 * TODO: Rename to something more properly descriptive. 3893 */ 3894 public boolean isRequest() { 3895 return (mType == NetworkRequestType.TRACK_DEFAULT) || 3896 (mType == NetworkRequestType.REQUEST); 3897 } 3898 3899 public String toString() { 3900 return typeString() + 3901 " from uid/pid:" + mUid + "/" + mPid + 3902 " for " + request + 3903 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3904 } 3905 } 3906 3907 private void ensureRequestableCapabilities(NetworkCapabilities networkCapabilities) { 3908 final String badCapability = networkCapabilities.describeFirstNonRequestableCapability(); 3909 if (badCapability != null) { 3910 throw new IllegalArgumentException("Cannot request network with " + badCapability); 3911 } 3912 } 3913 3914 private ArrayList<Integer> getSignalStrengthThresholds(NetworkAgentInfo nai) { 3915 final SortedSet<Integer> thresholds = new TreeSet(); 3916 synchronized (nai) { 3917 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3918 if (nri.request.networkCapabilities.hasSignalStrength() && 3919 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 3920 thresholds.add(nri.request.networkCapabilities.getSignalStrength()); 3921 } 3922 } 3923 } 3924 return new ArrayList<Integer>(thresholds); 3925 } 3926 3927 private void updateSignalStrengthThresholds( 3928 NetworkAgentInfo nai, String reason, NetworkRequest request) { 3929 ArrayList<Integer> thresholdsArray = getSignalStrengthThresholds(nai); 3930 Bundle thresholds = new Bundle(); 3931 thresholds.putIntegerArrayList("thresholds", thresholdsArray); 3932 3933 if (VDBG || (DBG && !"CONNECT".equals(reason))) { 3934 String detail; 3935 if (request != null && request.networkCapabilities.hasSignalStrength()) { 3936 detail = reason + " " + request.networkCapabilities.getSignalStrength(); 3937 } else { 3938 detail = reason; 3939 } 3940 log(String.format("updateSignalStrengthThresholds: %s, sending %s to %s", 3941 detail, Arrays.toString(thresholdsArray.toArray()), nai.name())); 3942 } 3943 3944 nai.asyncChannel.sendMessage( 3945 android.net.NetworkAgent.CMD_SET_SIGNAL_STRENGTH_THRESHOLDS, 3946 0, 0, thresholds); 3947 } 3948 3949 @Override 3950 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3951 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3952 final NetworkRequestType type = (networkCapabilities == null) 3953 ? NetworkRequestType.TRACK_DEFAULT 3954 : NetworkRequestType.REQUEST; 3955 // If the requested networkCapabilities is null, take them instead from 3956 // the default network request. This allows callers to keep track of 3957 // the system default network. 3958 if (type == NetworkRequestType.TRACK_DEFAULT) { 3959 networkCapabilities = new NetworkCapabilities(mDefaultRequest.networkCapabilities); 3960 enforceAccessPermission(); 3961 } else { 3962 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3963 enforceNetworkRequestPermissions(networkCapabilities); 3964 } 3965 enforceMeteredApnPolicy(networkCapabilities); 3966 ensureRequestableCapabilities(networkCapabilities); 3967 3968 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3969 throw new IllegalArgumentException("Bad timeout specified"); 3970 } 3971 3972 if (NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER 3973 .equals(networkCapabilities.getNetworkSpecifier())) { 3974 throw new IllegalArgumentException("Invalid network specifier - must not be '" 3975 + NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER + "'"); 3976 } 3977 3978 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3979 nextNetworkRequestId()); 3980 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, type); 3981 if (DBG) log("requestNetwork for " + nri); 3982 3983 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3984 if (timeoutMs > 0) { 3985 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3986 nri), timeoutMs); 3987 } 3988 return networkRequest; 3989 } 3990 3991 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3992 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3993 enforceConnectivityInternalPermission(); 3994 } else { 3995 enforceChangePermission(); 3996 } 3997 } 3998 3999 @Override 4000 public boolean requestBandwidthUpdate(Network network) { 4001 enforceAccessPermission(); 4002 NetworkAgentInfo nai = null; 4003 if (network == null) { 4004 return false; 4005 } 4006 synchronized (mNetworkForNetId) { 4007 nai = mNetworkForNetId.get(network.netId); 4008 } 4009 if (nai != null) { 4010 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 4011 return true; 4012 } 4013 return false; 4014 } 4015 4016 4017 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 4018 // if UID is restricted, don't allow them to bring up metered APNs 4019 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 4020 final int uidRules; 4021 final int uid = Binder.getCallingUid(); 4022 synchronized(mRulesLock) { 4023 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 4024 } 4025 if ((uidRules & RULE_ALLOW_ALL) == 0) { 4026 // we could silently fail or we can filter the available nets to only give 4027 // them those they have access to. Chose the more useful option. 4028 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 4029 } 4030 } 4031 } 4032 4033 @Override 4034 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 4035 PendingIntent operation) { 4036 checkNotNull(operation, "PendingIntent cannot be null."); 4037 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4038 enforceNetworkRequestPermissions(networkCapabilities); 4039 enforceMeteredApnPolicy(networkCapabilities); 4040 ensureRequestableCapabilities(networkCapabilities); 4041 4042 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 4043 nextNetworkRequestId()); 4044 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 4045 NetworkRequestType.REQUEST); 4046 if (DBG) log("pendingRequest for " + nri); 4047 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 4048 nri)); 4049 return networkRequest; 4050 } 4051 4052 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 4053 mHandler.sendMessageDelayed( 4054 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 4055 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 4056 } 4057 4058 @Override 4059 public void releasePendingNetworkRequest(PendingIntent operation) { 4060 checkNotNull(operation, "PendingIntent cannot be null."); 4061 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 4062 getCallingUid(), 0, operation)); 4063 } 4064 4065 // In order to implement the compatibility measure for pre-M apps that call 4066 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 4067 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 4068 // This ensures it has permission to do so. 4069 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 4070 if (nc == null) { 4071 return false; 4072 } 4073 int[] transportTypes = nc.getTransportTypes(); 4074 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 4075 return false; 4076 } 4077 try { 4078 mContext.enforceCallingOrSelfPermission( 4079 android.Manifest.permission.ACCESS_WIFI_STATE, 4080 "ConnectivityService"); 4081 } catch (SecurityException e) { 4082 return false; 4083 } 4084 return true; 4085 } 4086 4087 @Override 4088 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 4089 Messenger messenger, IBinder binder) { 4090 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 4091 enforceAccessPermission(); 4092 } 4093 4094 NetworkRequest networkRequest = new NetworkRequest( 4095 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 4096 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 4097 NetworkRequestType.LISTEN); 4098 if (VDBG) log("listenForNetwork for " + nri); 4099 4100 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4101 return networkRequest; 4102 } 4103 4104 @Override 4105 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 4106 PendingIntent operation) { 4107 checkNotNull(operation, "PendingIntent cannot be null."); 4108 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 4109 enforceAccessPermission(); 4110 } 4111 4112 NetworkRequest networkRequest = new NetworkRequest( 4113 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 4114 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 4115 NetworkRequestType.LISTEN); 4116 if (VDBG) log("pendingListenForNetwork for " + nri); 4117 4118 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4119 } 4120 4121 @Override 4122 public void releaseNetworkRequest(NetworkRequest networkRequest) { 4123 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 4124 0, networkRequest)); 4125 } 4126 4127 @Override 4128 public void registerNetworkFactory(Messenger messenger, String name) { 4129 enforceConnectivityInternalPermission(); 4130 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 4131 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 4132 } 4133 4134 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 4135 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 4136 mNetworkFactoryInfos.put(nfi.messenger, nfi); 4137 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 4138 } 4139 4140 @Override 4141 public void unregisterNetworkFactory(Messenger messenger) { 4142 enforceConnectivityInternalPermission(); 4143 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 4144 } 4145 4146 private void handleUnregisterNetworkFactory(Messenger messenger) { 4147 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 4148 if (nfi == null) { 4149 loge("Failed to find Messenger in unregisterNetworkFactory"); 4150 return; 4151 } 4152 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 4153 } 4154 4155 /** 4156 * NetworkAgentInfo supporting a request by requestId. 4157 * These have already been vetted (their Capabilities satisfy the request) 4158 * and the are the highest scored network available. 4159 * the are keyed off the Requests requestId. 4160 */ 4161 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 4162 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 4163 new SparseArray<NetworkAgentInfo>(); 4164 4165 // NOTE: Accessed on multiple threads, must be synchronized on itself. 4166 @GuardedBy("mNetworkForNetId") 4167 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 4168 new SparseArray<NetworkAgentInfo>(); 4169 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 4170 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 4171 // there may not be a strict 1:1 correlation between the two. 4172 @GuardedBy("mNetworkForNetId") 4173 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 4174 4175 // NetworkAgentInfo keyed off its connecting messenger 4176 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 4177 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 4178 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 4179 new HashMap<Messenger, NetworkAgentInfo>(); 4180 4181 @GuardedBy("mBlockedAppUids") 4182 private final HashSet<Integer> mBlockedAppUids = new HashSet(); 4183 4184 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 4185 private final NetworkRequest mDefaultRequest; 4186 4187 // Request used to optionally keep mobile data active even when higher 4188 // priority networks like Wi-Fi are active. 4189 private final NetworkRequest mDefaultMobileDataRequest; 4190 4191 private NetworkAgentInfo getDefaultNetwork() { 4192 return mNetworkForRequestId.get(mDefaultRequest.requestId); 4193 } 4194 4195 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 4196 return nai == getDefaultNetwork(); 4197 } 4198 4199 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 4200 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 4201 int currentScore, NetworkMisc networkMisc) { 4202 enforceConnectivityInternalPermission(); 4203 4204 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 4205 // satisfies mDefaultRequest. 4206 final NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 4207 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 4208 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 4209 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest, this); 4210 synchronized (this) { 4211 nai.networkMonitor.systemReady = mSystemReady; 4212 } 4213 addValidationLogs(nai.networkMonitor.getValidationLogs(), nai.network); 4214 if (DBG) log("registerNetworkAgent " + nai); 4215 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 4216 return nai.network.netId; 4217 } 4218 4219 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 4220 if (VDBG) log("Got NetworkAgent Messenger"); 4221 mNetworkAgentInfos.put(na.messenger, na); 4222 synchronized (mNetworkForNetId) { 4223 mNetworkForNetId.put(na.network.netId, na); 4224 } 4225 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 4226 NetworkInfo networkInfo = na.networkInfo; 4227 na.networkInfo = null; 4228 updateNetworkInfo(na, networkInfo); 4229 } 4230 4231 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 4232 LinkProperties newLp = networkAgent.linkProperties; 4233 int netId = networkAgent.network.netId; 4234 4235 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 4236 // we do anything else, make sure its LinkProperties are accurate. 4237 if (networkAgent.clatd != null) { 4238 networkAgent.clatd.fixupLinkProperties(oldLp); 4239 } 4240 4241 updateInterfaces(newLp, oldLp, netId); 4242 updateMtu(newLp, oldLp); 4243 // TODO - figure out what to do for clat 4244// for (LinkProperties lp : newLp.getStackedLinks()) { 4245// updateMtu(lp, null); 4246// } 4247 updateTcpBufferSizes(networkAgent); 4248 4249 updateRoutes(newLp, oldLp, netId); 4250 updateDnses(newLp, oldLp, netId); 4251 4252 updateClat(newLp, oldLp, networkAgent); 4253 if (isDefaultNetwork(networkAgent)) { 4254 handleApplyDefaultProxy(newLp.getHttpProxy()); 4255 } else { 4256 updateProxy(newLp, oldLp, networkAgent); 4257 } 4258 // TODO - move this check to cover the whole function 4259 if (!Objects.equals(newLp, oldLp)) { 4260 notifyIfacesChangedForNetworkStats(); 4261 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 4262 } 4263 4264 mKeepaliveTracker.handleCheckKeepalivesStillValid(networkAgent); 4265 } 4266 4267 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 4268 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 4269 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 4270 4271 if (!wasRunningClat && shouldRunClat) { 4272 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 4273 nai.clatd.start(); 4274 } else if (wasRunningClat && !shouldRunClat) { 4275 nai.clatd.stop(); 4276 } 4277 } 4278 4279 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 4280 CompareResult<String> interfaceDiff = new CompareResult<String>(); 4281 if (oldLp != null) { 4282 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 4283 } else if (newLp != null) { 4284 interfaceDiff.added = newLp.getAllInterfaceNames(); 4285 } 4286 for (String iface : interfaceDiff.added) { 4287 try { 4288 if (DBG) log("Adding iface " + iface + " to network " + netId); 4289 mNetd.addInterfaceToNetwork(iface, netId); 4290 } catch (Exception e) { 4291 loge("Exception adding interface: " + e); 4292 } 4293 } 4294 for (String iface : interfaceDiff.removed) { 4295 try { 4296 if (DBG) log("Removing iface " + iface + " from network " + netId); 4297 mNetd.removeInterfaceFromNetwork(iface, netId); 4298 } catch (Exception e) { 4299 loge("Exception removing interface: " + e); 4300 } 4301 } 4302 } 4303 4304 /** 4305 * Have netd update routes from oldLp to newLp. 4306 * @return true if routes changed between oldLp and newLp 4307 */ 4308 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 4309 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 4310 if (oldLp != null) { 4311 routeDiff = oldLp.compareAllRoutes(newLp); 4312 } else if (newLp != null) { 4313 routeDiff.added = newLp.getAllRoutes(); 4314 } 4315 4316 // add routes before removing old in case it helps with continuous connectivity 4317 4318 // do this twice, adding non-nexthop routes first, then routes they are dependent on 4319 for (RouteInfo route : routeDiff.added) { 4320 if (route.hasGateway()) continue; 4321 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4322 try { 4323 mNetd.addRoute(netId, route); 4324 } catch (Exception e) { 4325 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 4326 loge("Exception in addRoute for non-gateway: " + e); 4327 } 4328 } 4329 } 4330 for (RouteInfo route : routeDiff.added) { 4331 if (route.hasGateway() == false) continue; 4332 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4333 try { 4334 mNetd.addRoute(netId, route); 4335 } catch (Exception e) { 4336 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4337 loge("Exception in addRoute for gateway: " + e); 4338 } 4339 } 4340 } 4341 4342 for (RouteInfo route : routeDiff.removed) { 4343 if (VDBG) log("Removing Route [" + route + "] from network " + netId); 4344 try { 4345 mNetd.removeRoute(netId, route); 4346 } catch (Exception e) { 4347 loge("Exception in removeRoute: " + e); 4348 } 4349 } 4350 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4351 } 4352 4353 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId) { 4354 if (oldLp != null && newLp.isIdenticalDnses(oldLp)) { 4355 return; // no updating necessary 4356 } 4357 4358 Collection<InetAddress> dnses = newLp.getDnsServers(); 4359 if (DBG) log("Setting DNS servers for network " + netId + " to " + dnses); 4360 try { 4361 mNetd.setDnsConfigurationForNetwork( 4362 netId, NetworkUtils.makeStrings(dnses), newLp.getDomains()); 4363 } catch (Exception e) { 4364 loge("Exception in setDnsConfigurationForNetwork: " + e); 4365 } 4366 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 4367 if (defaultNai != null && defaultNai.network.netId == netId) { 4368 setDefaultDnsSystemProperties(dnses); 4369 } 4370 flushVmDnsCache(); 4371 } 4372 4373 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4374 int last = 0; 4375 for (InetAddress dns : dnses) { 4376 ++last; 4377 String key = "net.dns" + last; 4378 String value = dns.getHostAddress(); 4379 SystemProperties.set(key, value); 4380 } 4381 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4382 String key = "net.dns" + i; 4383 SystemProperties.set(key, ""); 4384 } 4385 mNumDnsEntries = last; 4386 } 4387 4388 /** 4389 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 4390 * augmented with any stateful capabilities implied from {@code networkAgent} 4391 * (e.g., validated status and captive portal status). 4392 * 4393 * @param nai the network having its capabilities updated. 4394 * @param networkCapabilities the new network capabilities. 4395 */ 4396 private void updateCapabilities(NetworkAgentInfo nai, NetworkCapabilities networkCapabilities) { 4397 // Don't modify caller's NetworkCapabilities. 4398 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4399 if (nai.lastValidated) { 4400 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4401 } else { 4402 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4403 } 4404 if (nai.lastCaptivePortalDetected) { 4405 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4406 } else { 4407 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4408 } 4409 if (!Objects.equals(nai.networkCapabilities, networkCapabilities)) { 4410 final int oldScore = nai.getCurrentScore(); 4411 if (nai.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) != 4412 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED)) { 4413 try { 4414 mNetd.setNetworkPermission(nai.network.netId, 4415 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) ? 4416 null : NetworkManagementService.PERMISSION_SYSTEM); 4417 } catch (RemoteException e) { 4418 loge("Exception in setNetworkPermission: " + e); 4419 } 4420 } 4421 synchronized (nai) { 4422 nai.networkCapabilities = networkCapabilities; 4423 } 4424 rematchAllNetworksAndRequests(nai, oldScore); 4425 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 4426 } 4427 } 4428 4429 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4430 for (int i = 0; i < nai.networkRequests.size(); i++) { 4431 NetworkRequest nr = nai.networkRequests.valueAt(i); 4432 // Don't send listening requests to factories. b/17393458 4433 if (!isRequest(nr)) continue; 4434 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4435 } 4436 } 4437 4438 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4439 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4440 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4441 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4442 networkRequest); 4443 } 4444 } 4445 4446 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4447 int notificationType) { 4448 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4449 Intent intent = new Intent(); 4450 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4451 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4452 nri.mPendingIntentSent = true; 4453 sendIntent(nri.mPendingIntent, intent); 4454 } 4455 // else not handled 4456 } 4457 4458 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4459 mPendingIntentWakeLock.acquire(); 4460 try { 4461 if (DBG) log("Sending " + pendingIntent); 4462 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4463 } catch (PendingIntent.CanceledException e) { 4464 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4465 mPendingIntentWakeLock.release(); 4466 releasePendingNetworkRequest(pendingIntent); 4467 } 4468 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4469 } 4470 4471 @Override 4472 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4473 String resultData, Bundle resultExtras) { 4474 if (DBG) log("Finished sending " + pendingIntent); 4475 mPendingIntentWakeLock.release(); 4476 // Release with a delay so the receiving client has an opportunity to put in its 4477 // own request. 4478 releasePendingNetworkRequestWithDelay(pendingIntent); 4479 } 4480 4481 private void callCallbackForRequest(NetworkRequestInfo nri, 4482 NetworkAgentInfo networkAgent, int notificationType) { 4483 if (nri.messenger == null) return; // Default request has no msgr 4484 Bundle bundle = new Bundle(); 4485 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4486 new NetworkRequest(nri.request)); 4487 Message msg = Message.obtain(); 4488 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4489 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4490 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4491 } 4492 switch (notificationType) { 4493 case ConnectivityManager.CALLBACK_LOSING: { 4494 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4495 break; 4496 } 4497 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4498 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4499 new NetworkCapabilities(networkAgent.networkCapabilities)); 4500 break; 4501 } 4502 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4503 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4504 new LinkProperties(networkAgent.linkProperties)); 4505 break; 4506 } 4507 } 4508 msg.what = notificationType; 4509 msg.setData(bundle); 4510 try { 4511 if (VDBG) { 4512 log("sending notification " + notifyTypeToName(notificationType) + 4513 " for " + nri.request); 4514 } 4515 nri.messenger.send(msg); 4516 } catch (RemoteException e) { 4517 // may occur naturally in the race of binder death. 4518 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4519 } 4520 } 4521 4522 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4523 for (int i = 0; i < nai.networkRequests.size(); i++) { 4524 NetworkRequest nr = nai.networkRequests.valueAt(i); 4525 // Ignore listening requests. 4526 if (!isRequest(nr)) continue; 4527 loge("Dead network still had at least " + nr); 4528 break; 4529 } 4530 nai.asyncChannel.disconnect(); 4531 } 4532 4533 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4534 if (oldNetwork == null) { 4535 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4536 return; 4537 } 4538 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4539 teardownUnneededNetwork(oldNetwork); 4540 } 4541 4542 private void makeDefault(NetworkAgentInfo newNetwork, NetworkAgentInfo prevNetwork) { 4543 if (DBG) log("Switching to new default network: " + newNetwork); 4544 setupDataActivityTracking(newNetwork); 4545 try { 4546 mNetd.setDefaultNetId(newNetwork.network.netId); 4547 } catch (Exception e) { 4548 loge("Exception setting default network :" + e); 4549 } 4550 notifyLockdownVpn(newNetwork); 4551 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4552 updateTcpBufferSizes(newNetwork); 4553 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4554 logDefaultNetworkEvent(newNetwork, prevNetwork); 4555 } 4556 4557 // Handles a network appearing or improving its score. 4558 // 4559 // - Evaluates all current NetworkRequests that can be 4560 // satisfied by newNetwork, and reassigns to newNetwork 4561 // any such requests for which newNetwork is the best. 4562 // 4563 // - Lingers any validated Networks that as a result are no longer 4564 // needed. A network is needed if it is the best network for 4565 // one or more NetworkRequests, or if it is a VPN. 4566 // 4567 // - Tears down newNetwork if it just became validated 4568 // but turns out to be unneeded. 4569 // 4570 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4571 // networks that have no chance (i.e. even if validated) 4572 // of becoming the highest scoring network. 4573 // 4574 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4575 // it does not remove NetworkRequests that other Networks could better satisfy. 4576 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4577 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4578 // as it performs better by a factor of the number of Networks. 4579 // 4580 // @param newNetwork is the network to be matched against NetworkRequests. 4581 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4582 // performed to tear down unvalidated networks that have no chance (i.e. even if 4583 // validated) of becoming the highest scoring network. 4584 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, 4585 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4586 if (!newNetwork.everConnected) return; 4587 boolean keep = newNetwork.isVPN(); 4588 boolean isNewDefault = false; 4589 NetworkAgentInfo oldDefaultNetwork = null; 4590 if (VDBG) log("rematching " + newNetwork.name()); 4591 // Find and migrate to this Network any NetworkRequests for 4592 // which this network is now the best. 4593 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4594 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4595 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4596 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4597 final NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4598 final boolean satisfies = newNetwork.satisfies(nri.request); 4599 if (newNetwork == currentNetwork && satisfies) { 4600 if (VDBG) { 4601 log("Network " + newNetwork.name() + " was already satisfying" + 4602 " request " + nri.request.requestId + ". No change."); 4603 } 4604 keep = true; 4605 continue; 4606 } 4607 4608 // check if it satisfies the NetworkCapabilities 4609 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4610 if (satisfies) { 4611 if (!nri.isRequest()) { 4612 // This is not a request, it's a callback listener. 4613 // Add it to newNetwork regardless of score. 4614 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4615 continue; 4616 } 4617 4618 // next check if it's better than any current network we're using for 4619 // this request 4620 if (VDBG) { 4621 log("currentScore = " + 4622 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4623 ", newScore = " + newNetwork.getCurrentScore()); 4624 } 4625 if (currentNetwork == null || 4626 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4627 if (VDBG) log("rematch for " + newNetwork.name()); 4628 if (currentNetwork != null) { 4629 if (VDBG) log(" accepting network in place of " + currentNetwork.name()); 4630 currentNetwork.networkRequests.remove(nri.request.requestId); 4631 currentNetwork.networkLingered.add(nri.request); 4632 affectedNetworks.add(currentNetwork); 4633 } else { 4634 if (VDBG) log(" accepting network in place of null"); 4635 } 4636 unlinger(newNetwork); 4637 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4638 if (!newNetwork.addRequest(nri.request)) { 4639 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4640 } 4641 addedRequests.add(nri); 4642 keep = true; 4643 // Tell NetworkFactories about the new score, so they can stop 4644 // trying to connect if they know they cannot match it. 4645 // TODO - this could get expensive if we have alot of requests for this 4646 // network. Think about if there is a way to reduce this. Push 4647 // netid->request mapping to each factory? 4648 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4649 if (mDefaultRequest.requestId == nri.request.requestId) { 4650 isNewDefault = true; 4651 oldDefaultNetwork = currentNetwork; 4652 } 4653 } 4654 } else if (newNetwork.networkRequests.get(nri.request.requestId) != null) { 4655 // If "newNetwork" is listed as satisfying "nri" but no longer satisfies "nri", 4656 // mark it as no longer satisfying "nri". Because networks are processed by 4657 // rematchAllNetworkAndRequests() in descending score order, "currentNetwork" will 4658 // match "newNetwork" before this loop will encounter a "currentNetwork" with higher 4659 // score than "newNetwork" and where "currentNetwork" no longer satisfies "nri". 4660 // This means this code doesn't have to handle the case where "currentNetwork" no 4661 // longer satisfies "nri" when "currentNetwork" does not equal "newNetwork". 4662 if (DBG) { 4663 log("Network " + newNetwork.name() + " stopped satisfying" + 4664 " request " + nri.request.requestId); 4665 } 4666 newNetwork.networkRequests.remove(nri.request.requestId); 4667 if (currentNetwork == newNetwork) { 4668 mNetworkForRequestId.remove(nri.request.requestId); 4669 sendUpdatedScoreToFactories(nri.request, 0); 4670 } else { 4671 if (nri.isRequest()) { 4672 Slog.wtf(TAG, "BUG: Removing request " + nri.request.requestId + " from " + 4673 newNetwork.name() + 4674 " without updating mNetworkForRequestId or factories!"); 4675 } 4676 } 4677 // TODO: technically, sending CALLBACK_LOST here is 4678 // incorrect if nri is a request (not a listen) and there 4679 // is a replacement network currently connected that can 4680 // satisfy it. However, the only capability that can both 4681 // a) be requested and b) change is NET_CAPABILITY_TRUSTED, 4682 // so this code is only incorrect for a network that loses 4683 // the TRUSTED capability, which is a rare case. 4684 callCallbackForRequest(nri, newNetwork, ConnectivityManager.CALLBACK_LOST); 4685 } 4686 } 4687 // Linger any networks that are no longer needed. 4688 for (NetworkAgentInfo nai : affectedNetworks) { 4689 if (nai.lingering) { 4690 // Already lingered. Nothing to do. This can only happen if "nai" is in 4691 // "affectedNetworks" twice. The reasoning being that to get added to 4692 // "affectedNetworks", "nai" must have been satisfying a NetworkRequest 4693 // (i.e. not lingered) so it could have only been lingered by this loop. 4694 // unneeded(nai) will be false and we'll call unlinger() below which would 4695 // be bad, so handle it here. 4696 } else if (unneeded(nai)) { 4697 linger(nai); 4698 } else { 4699 // Clear nai.networkLingered we might have added above. 4700 unlinger(nai); 4701 } 4702 } 4703 if (isNewDefault) { 4704 // Notify system services that this network is up. 4705 makeDefault(newNetwork, oldDefaultNetwork); 4706 synchronized (ConnectivityService.this) { 4707 // have a new default network, release the transition wakelock in 4708 // a second if it's held. The second pause is to allow apps 4709 // to reconnect over the new network 4710 if (mNetTransitionWakeLock.isHeld()) { 4711 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4712 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4713 mNetTransitionWakeLockSerialNumber, 0), 4714 1000); 4715 } 4716 } 4717 } 4718 4719 // do this after the default net is switched, but 4720 // before LegacyTypeTracker sends legacy broadcasts 4721 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4722 4723 if (isNewDefault) { 4724 // Maintain the illusion: since the legacy API only 4725 // understands one network at a time, we must pretend 4726 // that the current default network disconnected before 4727 // the new one connected. 4728 if (oldDefaultNetwork != null) { 4729 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4730 oldDefaultNetwork, true); 4731 } 4732 mDefaultInetConditionPublished = newNetwork.lastValidated ? 100 : 0; 4733 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4734 notifyLockdownVpn(newNetwork); 4735 } 4736 4737 if (keep) { 4738 // Notify battery stats service about this network, both the normal 4739 // interface and any stacked links. 4740 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4741 try { 4742 final IBatteryStats bs = BatteryStatsService.getService(); 4743 final int type = newNetwork.networkInfo.getType(); 4744 4745 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4746 bs.noteNetworkInterfaceType(baseIface, type); 4747 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4748 final String stackedIface = stacked.getInterfaceName(); 4749 bs.noteNetworkInterfaceType(stackedIface, type); 4750 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4751 } 4752 } catch (RemoteException ignored) { 4753 } 4754 4755 // This has to happen after the notifyNetworkCallbacks as that tickles each 4756 // ConnectivityManager instance so that legacy requests correctly bind dns 4757 // requests to this network. The legacy users are listening for this bcast 4758 // and will generally do a dns request so they can ensureRouteToHost and if 4759 // they do that before the callbacks happen they'll use the default network. 4760 // 4761 // TODO: Is there still a race here? We send the broadcast 4762 // after sending the callback, but if the app can receive the 4763 // broadcast before the callback, it might still break. 4764 // 4765 // This *does* introduce a race where if the user uses the new api 4766 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4767 // they may get old info. Reverse this after the old startUsing api is removed. 4768 // This is on top of the multiple intent sequencing referenced in the todo above. 4769 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4770 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4771 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4772 // legacy type tracker filters out repeat adds 4773 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4774 } 4775 } 4776 4777 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4778 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4779 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4780 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4781 if (newNetwork.isVPN()) { 4782 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4783 } 4784 } 4785 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4786 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4787 if (unneeded(nai)) { 4788 if (DBG) log("Reaping " + nai.name()); 4789 teardownUnneededNetwork(nai); 4790 } 4791 } 4792 } 4793 } 4794 4795 /** 4796 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4797 * being disconnected. 4798 * @param changed If only one Network's score or capabilities have been modified since the last 4799 * time this function was called, pass this Network in this argument, otherwise pass 4800 * null. 4801 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4802 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4803 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4804 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4805 * network's score. 4806 */ 4807 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4808 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4809 // to avoid the slowness. It is not simply enough to process just "changed", for 4810 // example in the case where "changed"'s score decreases and another network should begin 4811 // satifying a NetworkRequest that "changed" currently satisfies. 4812 4813 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4814 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4815 // rematchNetworkAndRequests() handles. 4816 if (changed != null && oldScore < changed.getCurrentScore()) { 4817 rematchNetworkAndRequests(changed, ReapUnvalidatedNetworks.REAP); 4818 } else { 4819 final NetworkAgentInfo[] nais = mNetworkAgentInfos.values().toArray( 4820 new NetworkAgentInfo[mNetworkAgentInfos.size()]); 4821 // Rematch higher scoring networks first to prevent requests first matching a lower 4822 // scoring network and then a higher scoring network, which could produce multiple 4823 // callbacks and inadvertently unlinger networks. 4824 Arrays.sort(nais); 4825 for (NetworkAgentInfo nai : nais) { 4826 rematchNetworkAndRequests(nai, 4827 // Only reap the last time through the loop. Reaping before all rematching 4828 // is complete could incorrectly teardown a network that hasn't yet been 4829 // rematched. 4830 (nai != nais[nais.length-1]) ? ReapUnvalidatedNetworks.DONT_REAP 4831 : ReapUnvalidatedNetworks.REAP); 4832 } 4833 } 4834 } 4835 4836 private void updateInetCondition(NetworkAgentInfo nai) { 4837 // Don't bother updating until we've graduated to validated at least once. 4838 if (!nai.everValidated) return; 4839 // For now only update icons for default connection. 4840 // TODO: Update WiFi and cellular icons separately. b/17237507 4841 if (!isDefaultNetwork(nai)) return; 4842 4843 int newInetCondition = nai.lastValidated ? 100 : 0; 4844 // Don't repeat publish. 4845 if (newInetCondition == mDefaultInetConditionPublished) return; 4846 4847 mDefaultInetConditionPublished = newInetCondition; 4848 sendInetConditionBroadcast(nai.networkInfo); 4849 } 4850 4851 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4852 if (mLockdownTracker != null) { 4853 if (nai != null && nai.isVPN()) { 4854 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4855 } else { 4856 mLockdownTracker.onNetworkInfoChanged(); 4857 } 4858 } 4859 } 4860 4861 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4862 NetworkInfo.State state = newInfo.getState(); 4863 NetworkInfo oldInfo = null; 4864 final int oldScore = networkAgent.getCurrentScore(); 4865 synchronized (networkAgent) { 4866 oldInfo = networkAgent.networkInfo; 4867 networkAgent.networkInfo = newInfo; 4868 } 4869 notifyLockdownVpn(networkAgent); 4870 4871 if (oldInfo != null && oldInfo.getState() == state) { 4872 if (oldInfo.isRoaming() != newInfo.isRoaming()) { 4873 if (VDBG) log("roaming status changed, notifying NetworkStatsService"); 4874 notifyIfacesChangedForNetworkStats(); 4875 } else if (VDBG) log("ignoring duplicate network state non-change"); 4876 // In either case, no further work should be needed. 4877 return; 4878 } 4879 if (DBG) { 4880 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4881 (oldInfo == null ? "null" : oldInfo.getState()) + 4882 " to " + state); 4883 } 4884 4885 if (!networkAgent.created 4886 && (state == NetworkInfo.State.CONNECTED 4887 || (state == NetworkInfo.State.CONNECTING && networkAgent.isVPN()))) { 4888 try { 4889 // This should never fail. Specifying an already in use NetID will cause failure. 4890 if (networkAgent.isVPN()) { 4891 mNetd.createVirtualNetwork(networkAgent.network.netId, 4892 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4893 (networkAgent.networkMisc == null || 4894 !networkAgent.networkMisc.allowBypass)); 4895 } else { 4896 mNetd.createPhysicalNetwork(networkAgent.network.netId, 4897 networkAgent.networkCapabilities.hasCapability( 4898 NET_CAPABILITY_NOT_RESTRICTED) ? 4899 null : NetworkManagementService.PERMISSION_SYSTEM); 4900 } 4901 } catch (Exception e) { 4902 loge("Error creating network " + networkAgent.network.netId + ": " 4903 + e.getMessage()); 4904 return; 4905 } 4906 networkAgent.created = true; 4907 } 4908 4909 if (!networkAgent.everConnected && state == NetworkInfo.State.CONNECTED) { 4910 networkAgent.everConnected = true; 4911 4912 updateLinkProperties(networkAgent, null); 4913 notifyIfacesChangedForNetworkStats(); 4914 4915 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4916 scheduleUnvalidatedPrompt(networkAgent); 4917 4918 if (networkAgent.isVPN()) { 4919 // Temporarily disable the default proxy (not global). 4920 synchronized (mProxyLock) { 4921 if (!mDefaultProxyDisabled) { 4922 mDefaultProxyDisabled = true; 4923 if (mGlobalProxy == null && mDefaultProxy != null) { 4924 sendProxyBroadcast(null); 4925 } 4926 } 4927 } 4928 // TODO: support proxy per network. 4929 } 4930 4931 // Whether a particular NetworkRequest listen should cause signal strength thresholds to 4932 // be communicated to a particular NetworkAgent depends only on the network's immutable, 4933 // capabilities, so it only needs to be done once on initial connect, not every time the 4934 // network's capabilities change. Note that we do this before rematching the network, 4935 // so we could decide to tear it down immediately afterwards. That's fine though - on 4936 // disconnection NetworkAgents should stop any signal strength monitoring they have been 4937 // doing. 4938 updateSignalStrengthThresholds(networkAgent, "CONNECT", null); 4939 4940 // Consider network even though it is not yet validated. 4941 rematchNetworkAndRequests(networkAgent, ReapUnvalidatedNetworks.REAP); 4942 4943 // This has to happen after matching the requests, because callbacks are just requests. 4944 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4945 } else if (state == NetworkInfo.State.DISCONNECTED) { 4946 networkAgent.asyncChannel.disconnect(); 4947 if (networkAgent.isVPN()) { 4948 synchronized (mProxyLock) { 4949 if (mDefaultProxyDisabled) { 4950 mDefaultProxyDisabled = false; 4951 if (mGlobalProxy == null && mDefaultProxy != null) { 4952 sendProxyBroadcast(mDefaultProxy); 4953 } 4954 } 4955 } 4956 } 4957 } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) || 4958 state == NetworkInfo.State.SUSPENDED) { 4959 // going into or coming out of SUSPEND: rescore and notify 4960 if (networkAgent.getCurrentScore() != oldScore) { 4961 rematchAllNetworksAndRequests(networkAgent, oldScore); 4962 } 4963 notifyNetworkCallbacks(networkAgent, (state == NetworkInfo.State.SUSPENDED ? 4964 ConnectivityManager.CALLBACK_SUSPENDED : 4965 ConnectivityManager.CALLBACK_RESUMED)); 4966 mLegacyTypeTracker.update(networkAgent); 4967 } 4968 } 4969 4970 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4971 if (VDBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4972 if (score < 0) { 4973 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4974 "). Bumping score to min of 0"); 4975 score = 0; 4976 } 4977 4978 final int oldScore = nai.getCurrentScore(); 4979 nai.setCurrentScore(score); 4980 4981 rematchAllNetworksAndRequests(nai, oldScore); 4982 4983 sendUpdatedScoreToFactories(nai); 4984 } 4985 4986 // notify only this one new request of the current state 4987 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4988 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4989 // TODO - read state from monitor to decide what to send. 4990// if (nai.networkMonitor.isLingering()) { 4991// notifyType = NetworkCallbacks.LOSING; 4992// } else if (nai.networkMonitor.isEvaluating()) { 4993// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4994// } 4995 if (nri.mPendingIntent == null) { 4996 callCallbackForRequest(nri, nai, notifyType); 4997 } else { 4998 sendPendingIntentForRequest(nri, nai, notifyType); 4999 } 5000 } 5001 5002 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, DetailedState state, int type) { 5003 // The NetworkInfo we actually send out has no bearing on the real 5004 // state of affairs. For example, if the default connection is mobile, 5005 // and a request for HIPRI has just gone away, we need to pretend that 5006 // HIPRI has just disconnected. So we need to set the type to HIPRI and 5007 // the state to DISCONNECTED, even though the network is of type MOBILE 5008 // and is still connected. 5009 NetworkInfo info = new NetworkInfo(nai.networkInfo); 5010 info.setType(type); 5011 if (state != DetailedState.DISCONNECTED) { 5012 info.setDetailedState(state, null, info.getExtraInfo()); 5013 sendConnectedBroadcast(info); 5014 } else { 5015 info.setDetailedState(state, info.getReason(), info.getExtraInfo()); 5016 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 5017 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 5018 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 5019 if (info.isFailover()) { 5020 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 5021 nai.networkInfo.setFailover(false); 5022 } 5023 if (info.getReason() != null) { 5024 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 5025 } 5026 if (info.getExtraInfo() != null) { 5027 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 5028 } 5029 NetworkAgentInfo newDefaultAgent = null; 5030 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 5031 newDefaultAgent = getDefaultNetwork(); 5032 if (newDefaultAgent != null) { 5033 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 5034 newDefaultAgent.networkInfo); 5035 } else { 5036 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 5037 } 5038 } 5039 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 5040 mDefaultInetConditionPublished); 5041 sendStickyBroadcast(intent); 5042 if (newDefaultAgent != null) { 5043 sendConnectedBroadcast(newDefaultAgent.networkInfo); 5044 } 5045 } 5046 } 5047 5048 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 5049 if (VDBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 5050 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 5051 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 5052 NetworkRequestInfo nri = mNetworkRequests.get(nr); 5053 if (VDBG) log(" sending notification for " + nr); 5054 if (nri.mPendingIntent == null) { 5055 callCallbackForRequest(nri, networkAgent, notifyType); 5056 } else { 5057 sendPendingIntentForRequest(nri, networkAgent, notifyType); 5058 } 5059 } 5060 } 5061 5062 private String notifyTypeToName(int notifyType) { 5063 switch (notifyType) { 5064 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 5065 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 5066 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 5067 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 5068 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 5069 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 5070 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 5071 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 5072 } 5073 return "UNKNOWN"; 5074 } 5075 5076 /** 5077 * Notify NetworkStatsService that the set of active ifaces has changed, or that one of the 5078 * properties tracked by NetworkStatsService on an active iface has changed. 5079 */ 5080 private void notifyIfacesChangedForNetworkStats() { 5081 try { 5082 mStatsService.forceUpdateIfaces(); 5083 } catch (Exception ignored) { 5084 } 5085 } 5086 5087 @Override 5088 public boolean addVpnAddress(String address, int prefixLength) { 5089 throwIfLockdownEnabled(); 5090 int user = UserHandle.getUserId(Binder.getCallingUid()); 5091 synchronized (mVpns) { 5092 return mVpns.get(user).addAddress(address, prefixLength); 5093 } 5094 } 5095 5096 @Override 5097 public boolean removeVpnAddress(String address, int prefixLength) { 5098 throwIfLockdownEnabled(); 5099 int user = UserHandle.getUserId(Binder.getCallingUid()); 5100 synchronized (mVpns) { 5101 return mVpns.get(user).removeAddress(address, prefixLength); 5102 } 5103 } 5104 5105 @Override 5106 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 5107 throwIfLockdownEnabled(); 5108 int user = UserHandle.getUserId(Binder.getCallingUid()); 5109 boolean success; 5110 synchronized (mVpns) { 5111 success = mVpns.get(user).setUnderlyingNetworks(networks); 5112 } 5113 if (success) { 5114 notifyIfacesChangedForNetworkStats(); 5115 } 5116 return success; 5117 } 5118 5119 @Override 5120 public String getCaptivePortalServerUrl() { 5121 return NetworkMonitor.getCaptivePortalServerUrl(mContext); 5122 } 5123 5124 @Override 5125 public void startNattKeepalive(Network network, int intervalSeconds, Messenger messenger, 5126 IBinder binder, String srcAddr, int srcPort, String dstAddr) { 5127 enforceKeepalivePermission(); 5128 mKeepaliveTracker.startNattKeepalive( 5129 getNetworkAgentInfoForNetwork(network), 5130 intervalSeconds, messenger, binder, 5131 srcAddr, srcPort, dstAddr, ConnectivityManager.PacketKeepalive.NATT_PORT); 5132 } 5133 5134 @Override 5135 public void stopKeepalive(Network network, int slot) { 5136 mHandler.sendMessage(mHandler.obtainMessage( 5137 NetworkAgent.CMD_STOP_PACKET_KEEPALIVE, slot, PacketKeepalive.SUCCESS, network)); 5138 } 5139 5140 @Override 5141 public void factoryReset() { 5142 enforceConnectivityInternalPermission(); 5143 5144 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 5145 return; 5146 } 5147 5148 final int userId = UserHandle.getCallingUserId(); 5149 5150 // Turn airplane mode off 5151 setAirplaneMode(false); 5152 5153 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 5154 // Untether 5155 for (String tether : getTetheredIfaces()) { 5156 untether(tether); 5157 } 5158 } 5159 5160 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 5161 // Turn VPN off 5162 VpnConfig vpnConfig = getVpnConfig(userId); 5163 if (vpnConfig != null) { 5164 if (vpnConfig.legacy) { 5165 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 5166 } else { 5167 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 5168 // in the future without user intervention. 5169 setVpnPackageAuthorization(vpnConfig.user, userId, false); 5170 5171 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 5172 } 5173 } 5174 } 5175 } 5176 5177 @VisibleForTesting 5178 public NetworkMonitor createNetworkMonitor(Context context, Handler handler, 5179 NetworkAgentInfo nai, NetworkRequest defaultRequest) { 5180 return new NetworkMonitor(context, handler, nai, defaultRequest); 5181 } 5182 5183 private static void logDefaultNetworkEvent(NetworkAgentInfo newNai, NetworkAgentInfo prevNai) { 5184 int newNetid = NETID_UNSET; 5185 int prevNetid = NETID_UNSET; 5186 int[] transports = new int[0]; 5187 boolean hadIPv4 = false; 5188 boolean hadIPv6 = false; 5189 5190 if (newNai != null) { 5191 newNetid = newNai.network.netId; 5192 transports = newNai.networkCapabilities.getTransportTypes(); 5193 } 5194 if (prevNai != null) { 5195 prevNetid = prevNai.network.netId; 5196 final LinkProperties lp = prevNai.linkProperties; 5197 hadIPv4 = lp.hasIPv4Address() && lp.hasIPv4DefaultRoute(); 5198 hadIPv6 = lp.hasGlobalIPv6Address() && lp.hasIPv6DefaultRoute(); 5199 } 5200 5201 DefaultNetworkEvent.logEvent(newNetid, transports, prevNetid, hadIPv4, hadIPv6); 5202 } 5203} 5204