ConnectivityService.java revision 17e6183b85ba3038acb935aaa01415058b2e6ddd
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_METERED; 37import static android.net.NetworkPolicyManager.RULE_TEMPORARY_ALLOW_METERED; 38import static android.net.NetworkPolicyManager.uidRulesToString; 39 40import android.annotation.Nullable; 41import android.app.BroadcastOptions; 42import android.app.Notification; 43import android.app.NotificationManager; 44import android.app.PendingIntent; 45import android.content.BroadcastReceiver; 46import android.content.ContentResolver; 47import android.content.Context; 48import android.content.Intent; 49import android.content.IntentFilter; 50import android.content.pm.PackageManager; 51import android.content.res.Configuration; 52import android.content.res.Resources; 53import android.database.ContentObserver; 54import android.net.ConnectivityManager; 55import android.net.ConnectivityManager.PacketKeepalive; 56import android.net.IConnectivityManager; 57import android.net.INetworkManagementEventObserver; 58import android.net.INetworkPolicyListener; 59import android.net.INetworkPolicyManager; 60import android.net.INetworkStatsService; 61import android.net.LinkProperties; 62import android.net.LinkProperties.CompareResult; 63import android.net.Network; 64import android.net.NetworkAgent; 65import android.net.NetworkCapabilities; 66import android.net.NetworkConfig; 67import android.net.NetworkInfo; 68import android.net.NetworkInfo.DetailedState; 69import android.net.NetworkMisc; 70import android.net.NetworkQuotaInfo; 71import android.net.NetworkRequest; 72import android.net.NetworkState; 73import android.net.NetworkUtils; 74import android.net.Proxy; 75import android.net.ProxyInfo; 76import android.net.RouteInfo; 77import android.net.UidRange; 78import android.net.Uri; 79import android.net.metrics.DefaultNetworkEvent; 80import android.net.metrics.NetworkEvent; 81import android.os.Binder; 82import android.os.Build; 83import android.os.Bundle; 84import android.os.FileUtils; 85import android.os.Handler; 86import android.os.HandlerThread; 87import android.os.IBinder; 88import android.os.INetworkManagementService; 89import android.os.Looper; 90import android.os.Message; 91import android.os.Messenger; 92import android.os.ParcelFileDescriptor; 93import android.os.PowerManager; 94import android.os.Process; 95import android.os.RemoteException; 96import android.os.ResultReceiver; 97import android.os.SystemProperties; 98import android.os.UserHandle; 99import android.os.UserManager; 100import android.provider.Settings; 101import android.security.Credentials; 102import android.security.KeyStore; 103import android.telephony.TelephonyManager; 104import android.text.TextUtils; 105import android.util.ArraySet; 106import android.util.LocalLog; 107import android.util.LocalLog.ReadOnlyLocalLog; 108import android.util.Log; 109import android.util.Pair; 110import android.util.Slog; 111import android.util.SparseArray; 112import android.util.SparseBooleanArray; 113import android.util.SparseIntArray; 114import android.util.Xml; 115 116import com.android.internal.R; 117import com.android.internal.annotations.GuardedBy; 118import com.android.internal.annotations.VisibleForTesting; 119import com.android.internal.app.IBatteryStats; 120import com.android.internal.net.LegacyVpnInfo; 121import com.android.internal.net.NetworkStatsFactory; 122import com.android.internal.net.VpnConfig; 123import com.android.internal.net.VpnInfo; 124import com.android.internal.net.VpnProfile; 125import com.android.internal.util.AsyncChannel; 126import com.android.internal.util.IndentingPrintWriter; 127import com.android.internal.util.MessageUtils; 128import com.android.internal.util.XmlUtils; 129import com.android.server.am.BatteryStatsService; 130import com.android.server.connectivity.DataConnectionStats; 131import com.android.server.connectivity.KeepaliveTracker; 132import com.android.server.connectivity.Nat464Xlat; 133import com.android.server.connectivity.NetworkAgentInfo; 134import com.android.server.connectivity.NetworkDiagnostics; 135import com.android.server.connectivity.NetworkMonitor; 136import com.android.server.connectivity.PacManager; 137import com.android.server.connectivity.PermissionMonitor; 138import com.android.server.connectivity.Tethering; 139import com.android.server.connectivity.Vpn; 140import com.android.server.net.BaseNetworkObserver; 141import com.android.server.net.LockdownVpnTracker; 142 143import com.google.android.collect.Lists; 144 145import org.xmlpull.v1.XmlPullParser; 146import org.xmlpull.v1.XmlPullParserException; 147 148import java.io.File; 149import java.io.FileDescriptor; 150import java.io.FileNotFoundException; 151import java.io.FileReader; 152import java.io.IOException; 153import java.io.PrintWriter; 154import java.net.Inet4Address; 155import java.net.InetAddress; 156import java.net.UnknownHostException; 157import java.util.ArrayDeque; 158import java.util.ArrayList; 159import java.util.Arrays; 160import java.util.Collection; 161import java.util.HashMap; 162import java.util.HashSet; 163import java.util.List; 164import java.util.Map; 165import java.util.Objects; 166import java.util.SortedSet; 167import java.util.TreeSet; 168 169/** 170 * @hide 171 */ 172public class ConnectivityService extends IConnectivityManager.Stub 173 implements PendingIntent.OnFinished { 174 private static final String TAG = "ConnectivityService"; 175 176 private static final boolean DBG = true; 177 private static final boolean VDBG = false; 178 179 private static final boolean LOGD_RULES = false; 180 private static final boolean LOGD_BLOCKED_NETWORKINFO = true; 181 182 // TODO: create better separation between radio types and network types 183 184 // how long to wait before switching back to a radio's default network 185 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 186 // system property that can override the above value 187 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 188 "android.telephony.apn-restore"; 189 190 // How long to wait before putting up a "This network doesn't have an Internet connection, 191 // connect anyway?" dialog after the user selects a network that doesn't validate. 192 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 193 194 // How long to delay to removal of a pending intent based request. 195 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 196 private final int mReleasePendingIntentDelayMs; 197 198 private Tethering mTethering; 199 200 private final PermissionMonitor mPermissionMonitor; 201 202 private KeyStore mKeyStore; 203 204 @GuardedBy("mVpns") 205 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 206 207 private boolean mLockdownEnabled; 208 private LockdownVpnTracker mLockdownTracker; 209 210 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 211 private Object mRulesLock = new Object(); 212 /** Currently active network rules by UID. */ 213 @GuardedBy("mRulesLock") 214 private SparseIntArray mUidRules = new SparseIntArray(); 215 /** Set of ifaces that are costly. */ 216 @GuardedBy("mRulesLock") 217 private ArraySet<String> mMeteredIfaces = new ArraySet<>(); 218 /** Flag indicating if background data is restricted. */ 219 @GuardedBy("mRulesLock") 220 private boolean mRestrictBackground; 221 /** Flag indicating if background data is restricted due to battery savings. */ 222 @GuardedBy("mRulesLock") 223 private boolean mRestrictPower; 224 225 final private Context mContext; 226 private int mNetworkPreference; 227 // 0 is full bad, 100 is full good 228 private int mDefaultInetConditionPublished = 0; 229 230 private int mNumDnsEntries; 231 232 private boolean mTestMode; 233 private static ConnectivityService sServiceInstance; 234 235 private INetworkManagementService mNetd; 236 private INetworkStatsService mStatsService; 237 private INetworkPolicyManager mPolicyManager; 238 239 private String mCurrentTcpBufferSizes; 240 241 private static final int ENABLED = 1; 242 private static final int DISABLED = 0; 243 244 private static final SparseArray<String> sMagicDecoderRing = MessageUtils.findMessageNames( 245 new Class[] { AsyncChannel.class, ConnectivityService.class, NetworkAgent.class }); 246 247 private enum ReapUnvalidatedNetworks { 248 // Tear down networks that have no chance (e.g. even if validated) of becoming 249 // the highest scoring network satisfying a NetworkRequest. This should be passed when 250 // all networks have been rematched against all NetworkRequests. 251 REAP, 252 // Don't reap networks. This should be passed when some networks have not yet been 253 // rematched against all NetworkRequests. 254 DONT_REAP 255 }; 256 257 /** 258 * used internally to change our mobile data enabled flag 259 */ 260 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 261 262 /** 263 * used internally to clear a wakelock when transitioning 264 * from one net to another. Clear happens when we get a new 265 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 266 * after a timeout if no network is found (typically 1 min). 267 */ 268 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 269 270 /** 271 * used internally to reload global proxy settings 272 */ 273 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 274 275 /** 276 * PAC manager has received new port. 277 */ 278 private static final int EVENT_PROXY_HAS_CHANGED = 16; 279 280 /** 281 * used internally when registering NetworkFactories 282 * obj = NetworkFactoryInfo 283 */ 284 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 285 286 /** 287 * used internally when registering NetworkAgents 288 * obj = Messenger 289 */ 290 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 291 292 /** 293 * used to add a network request 294 * includes a NetworkRequestInfo 295 */ 296 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 297 298 /** 299 * indicates a timeout period is over - check if we had a network yet or not 300 * and if not, call the timeout calback (but leave the request live until they 301 * cancel it. 302 * includes a NetworkRequestInfo 303 */ 304 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 305 306 /** 307 * used to add a network listener - no request 308 * includes a NetworkRequestInfo 309 */ 310 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 311 312 /** 313 * used to remove a network request, either a listener or a real request 314 * arg1 = UID of caller 315 * obj = NetworkRequest 316 */ 317 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 318 319 /** 320 * used internally when registering NetworkFactories 321 * obj = Messenger 322 */ 323 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 324 325 /** 326 * used internally to expire a wakelock when transitioning 327 * from one net to another. Expire happens when we fail to find 328 * a new network (typically after 1 minute) - 329 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 330 * a replacement network. 331 */ 332 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 333 334 /** 335 * Used internally to indicate the system is ready. 336 */ 337 private static final int EVENT_SYSTEM_READY = 25; 338 339 /** 340 * used to add a network request with a pending intent 341 * obj = NetworkRequestInfo 342 */ 343 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 344 345 /** 346 * used to remove a pending intent and its associated network request. 347 * arg1 = UID of caller 348 * obj = PendingIntent 349 */ 350 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 351 352 /** 353 * used to specify whether a network should be used even if unvalidated. 354 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 355 * arg2 = whether to remember this choice in the future (1 or 0) 356 * obj = network 357 */ 358 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 359 360 /** 361 * used to ask the user to confirm a connection to an unvalidated network. 362 * obj = network 363 */ 364 private static final int EVENT_PROMPT_UNVALIDATED = 29; 365 366 /** 367 * used internally to (re)configure mobile data always-on settings. 368 */ 369 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 370 371 /** 372 * used to add a network listener with a pending intent 373 * obj = NetworkRequestInfo 374 */ 375 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 376 377 /** Handler thread used for both of the handlers below. */ 378 @VisibleForTesting 379 protected final HandlerThread mHandlerThread; 380 /** Handler used for internal events. */ 381 final private InternalHandler mHandler; 382 /** Handler used for incoming {@link NetworkStateTracker} events. */ 383 final private NetworkStateTrackerHandler mTrackerHandler; 384 385 private boolean mSystemReady; 386 private Intent mInitialBroadcast; 387 388 private PowerManager.WakeLock mNetTransitionWakeLock; 389 private String mNetTransitionWakeLockCausedBy = ""; 390 private int mNetTransitionWakeLockSerialNumber; 391 private int mNetTransitionWakeLockTimeout; 392 private final PowerManager.WakeLock mPendingIntentWakeLock; 393 394 // used in DBG mode to track inet condition reports 395 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 396 private ArrayList mInetLog; 397 398 // track the current default http proxy - tell the world if we get a new one (real change) 399 private volatile ProxyInfo mDefaultProxy = null; 400 private Object mProxyLock = new Object(); 401 private boolean mDefaultProxyDisabled = false; 402 403 // track the global proxy. 404 private ProxyInfo mGlobalProxy = null; 405 406 private PacManager mPacManager = null; 407 408 final private SettingsObserver mSettingsObserver; 409 410 private UserManager mUserManager; 411 412 NetworkConfig[] mNetConfigs; 413 int mNetworksDefined; 414 415 // the set of network types that can only be enabled by system/sig apps 416 List mProtectedNetworks; 417 418 private DataConnectionStats mDataConnectionStats; 419 420 TelephonyManager mTelephonyManager; 421 422 private KeepaliveTracker mKeepaliveTracker; 423 424 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 425 private final static int MIN_NET_ID = 100; // some reserved marks 426 private final static int MAX_NET_ID = 65535; 427 private int mNextNetId = MIN_NET_ID; 428 429 // sequence number of NetworkRequests 430 private int mNextNetworkRequestId = 1; 431 432 // NetworkRequest activity String log entries. 433 private static final int MAX_NETWORK_REQUEST_LOGS = 20; 434 private final LocalLog mNetworkRequestInfoLogs = new LocalLog(MAX_NETWORK_REQUEST_LOGS); 435 436 // Array of <Network,ReadOnlyLocalLogs> tracking network validation and results 437 private static final int MAX_VALIDATION_LOGS = 10; 438 private final ArrayDeque<Pair<Network,ReadOnlyLocalLog>> mValidationLogs = 439 new ArrayDeque<Pair<Network,ReadOnlyLocalLog>>(MAX_VALIDATION_LOGS); 440 441 private void addValidationLogs(ReadOnlyLocalLog log, Network network) { 442 synchronized(mValidationLogs) { 443 while (mValidationLogs.size() >= MAX_VALIDATION_LOGS) { 444 mValidationLogs.removeLast(); 445 } 446 mValidationLogs.addFirst(new Pair(network, log)); 447 } 448 } 449 450 /** 451 * Implements support for the legacy "one network per network type" model. 452 * 453 * We used to have a static array of NetworkStateTrackers, one for each 454 * network type, but that doesn't work any more now that we can have, 455 * for example, more that one wifi network. This class stores all the 456 * NetworkAgentInfo objects that support a given type, but the legacy 457 * API will only see the first one. 458 * 459 * It serves two main purposes: 460 * 461 * 1. Provide information about "the network for a given type" (since this 462 * API only supports one). 463 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 464 * the first network for a given type changes, or if the default network 465 * changes. 466 */ 467 private class LegacyTypeTracker { 468 469 private static final boolean DBG = true; 470 private static final boolean VDBG = false; 471 472 /** 473 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 474 * Each list holds references to all NetworkAgentInfos that are used to 475 * satisfy requests for that network type. 476 * 477 * This array is built out at startup such that an unsupported network 478 * doesn't get an ArrayList instance, making this a tristate: 479 * unsupported, supported but not active and active. 480 * 481 * The actual lists are populated when we scan the network types that 482 * are supported on this device. 483 */ 484 private ArrayList<NetworkAgentInfo> mTypeLists[]; 485 486 public LegacyTypeTracker() { 487 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 488 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 489 } 490 491 public void addSupportedType(int type) { 492 if (mTypeLists[type] != null) { 493 throw new IllegalStateException( 494 "legacy list for type " + type + "already initialized"); 495 } 496 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 497 } 498 499 public boolean isTypeSupported(int type) { 500 return isNetworkTypeValid(type) && mTypeLists[type] != null; 501 } 502 503 public NetworkAgentInfo getNetworkForType(int type) { 504 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 505 return mTypeLists[type].get(0); 506 } else { 507 return null; 508 } 509 } 510 511 private void maybeLogBroadcast(NetworkAgentInfo nai, DetailedState state, int type, 512 boolean isDefaultNetwork) { 513 if (DBG) { 514 log("Sending " + state + 515 " broadcast for type " + type + " " + nai.name() + 516 " isDefaultNetwork=" + isDefaultNetwork); 517 } 518 } 519 520 /** Adds the given network to the specified legacy type list. */ 521 public void add(int type, NetworkAgentInfo nai) { 522 if (!isTypeSupported(type)) { 523 return; // Invalid network type. 524 } 525 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 526 527 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 528 if (list.contains(nai)) { 529 return; 530 } 531 532 list.add(nai); 533 534 // Send a broadcast if this is the first network of its type or if it's the default. 535 final boolean isDefaultNetwork = isDefaultNetwork(nai); 536 if (list.size() == 1 || isDefaultNetwork) { 537 maybeLogBroadcast(nai, DetailedState.CONNECTED, type, isDefaultNetwork); 538 sendLegacyNetworkBroadcast(nai, DetailedState.CONNECTED, type); 539 } 540 } 541 542 /** Removes the given network from the specified legacy type list. */ 543 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 544 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 545 if (list == null || list.isEmpty()) { 546 return; 547 } 548 549 final boolean wasFirstNetwork = list.get(0).equals(nai); 550 551 if (!list.remove(nai)) { 552 return; 553 } 554 555 final DetailedState state = DetailedState.DISCONNECTED; 556 557 if (wasFirstNetwork || wasDefault) { 558 maybeLogBroadcast(nai, state, type, wasDefault); 559 sendLegacyNetworkBroadcast(nai, state, type); 560 } 561 562 if (!list.isEmpty() && wasFirstNetwork) { 563 if (DBG) log("Other network available for type " + type + 564 ", sending connected broadcast"); 565 final NetworkAgentInfo replacement = list.get(0); 566 maybeLogBroadcast(replacement, state, type, isDefaultNetwork(replacement)); 567 sendLegacyNetworkBroadcast(replacement, state, type); 568 } 569 } 570 571 /** Removes the given network from all legacy type lists. */ 572 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 573 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 574 for (int type = 0; type < mTypeLists.length; type++) { 575 remove(type, nai, wasDefault); 576 } 577 } 578 579 // send out another legacy broadcast - currently only used for suspend/unsuspend 580 // toggle 581 public void update(NetworkAgentInfo nai) { 582 final boolean isDefault = isDefaultNetwork(nai); 583 final DetailedState state = nai.networkInfo.getDetailedState(); 584 for (int type = 0; type < mTypeLists.length; type++) { 585 final ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 586 final boolean contains = (list != null && list.contains(nai)); 587 final boolean isFirst = (list != null && list.size() > 0 && nai == list.get(0)); 588 if (isFirst || (contains && isDefault)) { 589 maybeLogBroadcast(nai, state, type, isDefault); 590 sendLegacyNetworkBroadcast(nai, state, type); 591 } 592 } 593 } 594 595 private String naiToString(NetworkAgentInfo nai) { 596 String name = (nai != null) ? nai.name() : "null"; 597 String state = (nai.networkInfo != null) ? 598 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 599 "???/???"; 600 return name + " " + state; 601 } 602 603 public void dump(IndentingPrintWriter pw) { 604 pw.println("mLegacyTypeTracker:"); 605 pw.increaseIndent(); 606 pw.print("Supported types:"); 607 for (int type = 0; type < mTypeLists.length; type++) { 608 if (mTypeLists[type] != null) pw.print(" " + type); 609 } 610 pw.println(); 611 pw.println("Current state:"); 612 pw.increaseIndent(); 613 for (int type = 0; type < mTypeLists.length; type++) { 614 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 615 for (NetworkAgentInfo nai : mTypeLists[type]) { 616 pw.println(type + " " + naiToString(nai)); 617 } 618 } 619 pw.decreaseIndent(); 620 pw.decreaseIndent(); 621 pw.println(); 622 } 623 } 624 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 625 626 @VisibleForTesting 627 protected HandlerThread createHandlerThread() { 628 return new HandlerThread("ConnectivityServiceThread"); 629 } 630 631 public ConnectivityService(Context context, INetworkManagementService netManager, 632 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 633 if (DBG) log("ConnectivityService starting up"); 634 635 mDefaultRequest = createInternetRequestForTransport(-1); 636 NetworkRequestInfo defaultNRI = new NetworkRequestInfo(null, mDefaultRequest, 637 new Binder(), NetworkRequestType.REQUEST); 638 mNetworkRequests.put(mDefaultRequest, defaultNRI); 639 mNetworkRequestInfoLogs.log("REGISTER " + defaultNRI); 640 641 mDefaultMobileDataRequest = createInternetRequestForTransport( 642 NetworkCapabilities.TRANSPORT_CELLULAR); 643 644 mHandlerThread = createHandlerThread(); 645 mHandlerThread.start(); 646 mHandler = new InternalHandler(mHandlerThread.getLooper()); 647 mTrackerHandler = new NetworkStateTrackerHandler(mHandlerThread.getLooper()); 648 649 // setup our unique device name 650 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 651 String id = Settings.Secure.getString(context.getContentResolver(), 652 Settings.Secure.ANDROID_ID); 653 if (id != null && id.length() > 0) { 654 String name = new String("android-").concat(id); 655 SystemProperties.set("net.hostname", name); 656 } 657 } 658 659 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 660 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 661 662 mContext = checkNotNull(context, "missing Context"); 663 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 664 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 665 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 666 mKeyStore = KeyStore.getInstance(); 667 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 668 669 try { 670 mPolicyManager.setConnectivityListener(mPolicyListener); 671 mRestrictBackground = mPolicyManager.getRestrictBackground(); 672 mRestrictPower = mPolicyManager.getRestrictPower(); 673 } catch (RemoteException e) { 674 // ouch, no rules updates means some processes may never get network 675 loge("unable to register INetworkPolicyListener" + e); 676 } 677 678 final PowerManager powerManager = (PowerManager) context.getSystemService( 679 Context.POWER_SERVICE); 680 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 681 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 682 com.android.internal.R.integer.config_networkTransitionTimeout); 683 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 684 685 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 686 687 // TODO: What is the "correct" way to do determine if this is a wifi only device? 688 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 689 log("wifiOnly=" + wifiOnly); 690 String[] naStrings = context.getResources().getStringArray( 691 com.android.internal.R.array.networkAttributes); 692 for (String naString : naStrings) { 693 try { 694 NetworkConfig n = new NetworkConfig(naString); 695 if (VDBG) log("naString=" + naString + " config=" + n); 696 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 697 loge("Error in networkAttributes - ignoring attempt to define type " + 698 n.type); 699 continue; 700 } 701 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 702 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 703 n.type); 704 continue; 705 } 706 if (mNetConfigs[n.type] != null) { 707 loge("Error in networkAttributes - ignoring attempt to redefine type " + 708 n.type); 709 continue; 710 } 711 mLegacyTypeTracker.addSupportedType(n.type); 712 713 mNetConfigs[n.type] = n; 714 mNetworksDefined++; 715 } catch(Exception e) { 716 // ignore it - leave the entry null 717 } 718 } 719 720 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 721 if (mNetConfigs[TYPE_VPN] == null) { 722 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 723 // don't need to add TYPE_VPN to mNetConfigs. 724 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 725 mNetworksDefined++; // used only in the log() statement below. 726 } 727 728 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 729 730 mProtectedNetworks = new ArrayList<Integer>(); 731 int[] protectedNetworks = context.getResources().getIntArray( 732 com.android.internal.R.array.config_protectedNetworks); 733 for (int p : protectedNetworks) { 734 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 735 mProtectedNetworks.add(p); 736 } else { 737 if (DBG) loge("Ignoring protectedNetwork " + p); 738 } 739 } 740 741 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 742 && SystemProperties.get("ro.build.type").equals("eng"); 743 744 mTethering = new Tethering(mContext, mNetd, statsService); 745 746 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 747 748 //set up the listener for user state for creating user VPNs 749 IntentFilter intentFilter = new IntentFilter(); 750 intentFilter.addAction(Intent.ACTION_USER_STARTED); 751 intentFilter.addAction(Intent.ACTION_USER_STOPPED); 752 intentFilter.addAction(Intent.ACTION_USER_ADDED); 753 intentFilter.addAction(Intent.ACTION_USER_REMOVED); 754 intentFilter.addAction(Intent.ACTION_USER_UNLOCKED); 755 mContext.registerReceiverAsUser( 756 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 757 758 try { 759 mNetd.registerObserver(mTethering); 760 mNetd.registerObserver(mDataActivityObserver); 761 } catch (RemoteException e) { 762 loge("Error registering observer :" + e); 763 } 764 765 if (DBG) { 766 mInetLog = new ArrayList(); 767 } 768 769 mSettingsObserver = new SettingsObserver(mContext, mHandler); 770 registerSettingsCallbacks(); 771 772 mDataConnectionStats = new DataConnectionStats(mContext); 773 mDataConnectionStats.startMonitoring(); 774 775 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 776 777 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 778 779 mKeepaliveTracker = new KeepaliveTracker(mHandler); 780 } 781 782 private NetworkRequest createInternetRequestForTransport(int transportType) { 783 NetworkCapabilities netCap = new NetworkCapabilities(); 784 netCap.addCapability(NET_CAPABILITY_INTERNET); 785 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 786 if (transportType > -1) { 787 netCap.addTransportType(transportType); 788 } 789 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 790 } 791 792 private void handleMobileDataAlwaysOn() { 793 final boolean enable = (Settings.Global.getInt( 794 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 795 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 796 if (enable == isEnabled) { 797 return; // Nothing to do. 798 } 799 800 if (enable) { 801 handleRegisterNetworkRequest(new NetworkRequestInfo( 802 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestType.REQUEST)); 803 } else { 804 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 805 } 806 } 807 808 private void registerSettingsCallbacks() { 809 // Watch for global HTTP proxy changes. 810 mSettingsObserver.observe( 811 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 812 EVENT_APPLY_GLOBAL_HTTP_PROXY); 813 814 // Watch for whether or not to keep mobile data always on. 815 mSettingsObserver.observe( 816 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 817 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 818 } 819 820 private synchronized int nextNetworkRequestId() { 821 return mNextNetworkRequestId++; 822 } 823 824 @VisibleForTesting 825 protected int reserveNetId() { 826 synchronized (mNetworkForNetId) { 827 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 828 int netId = mNextNetId; 829 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 830 // Make sure NetID unused. http://b/16815182 831 if (!mNetIdInUse.get(netId)) { 832 mNetIdInUse.put(netId, true); 833 return netId; 834 } 835 } 836 } 837 throw new IllegalStateException("No free netIds"); 838 } 839 840 private NetworkState getFilteredNetworkState(int networkType, int uid, boolean ignoreBlocked) { 841 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 842 final NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 843 final NetworkState state; 844 if (nai != null) { 845 state = nai.getNetworkState(); 846 state.networkInfo.setType(networkType); 847 } else { 848 final NetworkInfo info = new NetworkInfo(networkType, 0, 849 getNetworkTypeName(networkType), ""); 850 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 851 info.setIsAvailable(true); 852 state = new NetworkState(info, new LinkProperties(), new NetworkCapabilities(), 853 null, null, null); 854 } 855 filterNetworkStateForUid(state, uid, ignoreBlocked); 856 return state; 857 } else { 858 return NetworkState.EMPTY; 859 } 860 } 861 862 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 863 if (network == null) { 864 return null; 865 } 866 synchronized (mNetworkForNetId) { 867 return mNetworkForNetId.get(network.netId); 868 } 869 } 870 871 private Network[] getVpnUnderlyingNetworks(int uid) { 872 if (!mLockdownEnabled) { 873 int user = UserHandle.getUserId(uid); 874 synchronized (mVpns) { 875 Vpn vpn = mVpns.get(user); 876 if (vpn != null && vpn.appliesToUid(uid)) { 877 return vpn.getUnderlyingNetworks(); 878 } 879 } 880 } 881 return null; 882 } 883 884 private NetworkState getUnfilteredActiveNetworkState(int uid) { 885 NetworkAgentInfo nai = getDefaultNetwork(); 886 887 final Network[] networks = getVpnUnderlyingNetworks(uid); 888 if (networks != null) { 889 // getUnderlyingNetworks() returns: 890 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 891 // empty array => the VPN explicitly said "no default network". 892 // non-empty array => the VPN specified one or more default networks; we use the 893 // first one. 894 if (networks.length > 0) { 895 nai = getNetworkAgentInfoForNetwork(networks[0]); 896 } else { 897 nai = null; 898 } 899 } 900 901 if (nai != null) { 902 return nai.getNetworkState(); 903 } else { 904 return NetworkState.EMPTY; 905 } 906 } 907 908 /** 909 * Check if UID should be blocked from using the network with the given LinkProperties. 910 */ 911 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid, 912 boolean ignoreBlocked) { 913 // Networks aren't blocked when ignoring blocked status 914 if (ignoreBlocked) return false; 915 // Networks are never blocked for system services 916 if (uid < Process.FIRST_APPLICATION_UID) return false; 917 918 final boolean networkMetered; 919 final int uidRules; 920 921 synchronized (mVpns) { 922 final Vpn vpn = mVpns.get(UserHandle.getUserId(uid)); 923 if (vpn != null && vpn.isBlockingUid(uid)) { 924 return true; 925 } 926 } 927 928 final String iface = (lp == null ? "" : lp.getInterfaceName()); 929 synchronized (mRulesLock) { 930 networkMetered = mMeteredIfaces.contains(iface); 931 uidRules = mUidRules.get(uid, RULE_NONE); 932 } 933 934 boolean allowed = true; 935 // Check Data Saver Mode first... 936 if (networkMetered) { 937 if ((uidRules & RULE_REJECT_METERED) != 0) { 938 if (LOGD_RULES) Log.d(TAG, "uid " + uid + " is blacklisted"); 939 // Explicitly blacklisted. 940 allowed = false; 941 } else { 942 allowed = !mRestrictBackground 943 || (uidRules & RULE_ALLOW_METERED) != 0 944 || (uidRules & RULE_TEMPORARY_ALLOW_METERED) != 0; 945 if (LOGD_RULES) Log.d(TAG, "allowed status for uid " + uid + " when" 946 + " mRestrictBackground=" + mRestrictBackground 947 + ", whitelisted=" + ((uidRules & RULE_ALLOW_METERED) != 0) 948 + ", tempWhitelist= + ((uidRules & RULE_TEMPORARY_ALLOW_METERED) != 0)" 949 + ": " + allowed); 950 } 951 } 952 // ...then Battery Saver Mode. 953 if (allowed && mRestrictPower) { 954 allowed = (uidRules & RULE_ALLOW_ALL) != 0; 955 if (LOGD_RULES) Log.d(TAG, "allowed status for uid " + uid + " when" 956 + " mRestrictPower=" + mRestrictPower 957 + ", whitelisted=" + ((uidRules & RULE_ALLOW_ALL) != 0) 958 + ": " + allowed); 959 } 960 return !allowed; 961 } 962 963 private void maybeLogBlockedNetworkInfo(NetworkInfo ni, int uid) { 964 if (ni == null || !LOGD_BLOCKED_NETWORKINFO) return; 965 boolean removed = false; 966 boolean added = false; 967 synchronized (mBlockedAppUids) { 968 if (ni.getDetailedState() == DetailedState.BLOCKED && mBlockedAppUids.add(uid)) { 969 added = true; 970 } else if (ni.isConnected() && mBlockedAppUids.remove(uid)) { 971 removed = true; 972 } 973 } 974 if (added) log("Returning blocked NetworkInfo to uid=" + uid); 975 else if (removed) log("Returning unblocked NetworkInfo to uid=" + uid); 976 } 977 978 /** 979 * Apply any relevant filters to {@link NetworkState} for the given UID. For 980 * example, this may mark the network as {@link DetailedState#BLOCKED} based 981 * on {@link #isNetworkWithLinkPropertiesBlocked}, or 982 * {@link NetworkInfo#isMetered()} based on network policies. 983 */ 984 private void filterNetworkStateForUid(NetworkState state, int uid, boolean ignoreBlocked) { 985 if (state == null || state.networkInfo == null || state.linkProperties == null) return; 986 987 if (isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid, ignoreBlocked)) { 988 state.networkInfo.setDetailedState(DetailedState.BLOCKED, null, null); 989 } 990 if (mLockdownTracker != null) { 991 mLockdownTracker.augmentNetworkInfo(state.networkInfo); 992 } 993 994 // TODO: apply metered state closer to NetworkAgentInfo 995 final long token = Binder.clearCallingIdentity(); 996 try { 997 state.networkInfo.setMetered(mPolicyManager.isNetworkMetered(state)); 998 } catch (RemoteException e) { 999 } finally { 1000 Binder.restoreCallingIdentity(token); 1001 } 1002 } 1003 1004 /** 1005 * Return NetworkInfo for the active (i.e., connected) network interface. 1006 * It is assumed that at most one network is active at a time. If more 1007 * than one is active, it is indeterminate which will be returned. 1008 * @return the info for the active network, or {@code null} if none is 1009 * active 1010 */ 1011 @Override 1012 public NetworkInfo getActiveNetworkInfo() { 1013 enforceAccessPermission(); 1014 final int uid = Binder.getCallingUid(); 1015 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1016 filterNetworkStateForUid(state, uid, false); 1017 maybeLogBlockedNetworkInfo(state.networkInfo, uid); 1018 return state.networkInfo; 1019 } 1020 1021 @Override 1022 public Network getActiveNetwork() { 1023 enforceAccessPermission(); 1024 return getActiveNetworkForUidInternal(Binder.getCallingUid(), false); 1025 } 1026 1027 @Override 1028 public Network getActiveNetworkForUid(int uid, boolean ignoreBlocked) { 1029 enforceConnectivityInternalPermission(); 1030 return getActiveNetworkForUidInternal(uid, ignoreBlocked); 1031 } 1032 1033 private Network getActiveNetworkForUidInternal(final int uid, boolean ignoreBlocked) { 1034 final int user = UserHandle.getUserId(uid); 1035 int vpnNetId = NETID_UNSET; 1036 synchronized (mVpns) { 1037 final Vpn vpn = mVpns.get(user); 1038 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 1039 } 1040 NetworkAgentInfo nai; 1041 if (vpnNetId != NETID_UNSET) { 1042 synchronized (mNetworkForNetId) { 1043 nai = mNetworkForNetId.get(vpnNetId); 1044 } 1045 if (nai != null) return nai.network; 1046 } 1047 nai = getDefaultNetwork(); 1048 if (nai != null 1049 && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid, ignoreBlocked)) { 1050 nai = null; 1051 } 1052 return nai != null ? nai.network : null; 1053 } 1054 1055 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1056 enforceAccessPermission(); 1057 final int uid = Binder.getCallingUid(); 1058 NetworkState state = getUnfilteredActiveNetworkState(uid); 1059 return state.networkInfo; 1060 } 1061 1062 @Override 1063 public NetworkInfo getActiveNetworkInfoForUid(int uid, boolean ignoreBlocked) { 1064 enforceConnectivityInternalPermission(); 1065 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1066 filterNetworkStateForUid(state, uid, ignoreBlocked); 1067 return state.networkInfo; 1068 } 1069 1070 @Override 1071 public NetworkInfo getNetworkInfo(int networkType) { 1072 enforceAccessPermission(); 1073 final int uid = Binder.getCallingUid(); 1074 if (getVpnUnderlyingNetworks(uid) != null) { 1075 // A VPN is active, so we may need to return one of its underlying networks. This 1076 // information is not available in LegacyTypeTracker, so we have to get it from 1077 // getUnfilteredActiveNetworkState. 1078 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1079 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1080 filterNetworkStateForUid(state, uid, false); 1081 return state.networkInfo; 1082 } 1083 } 1084 final NetworkState state = getFilteredNetworkState(networkType, uid, false); 1085 return state.networkInfo; 1086 } 1087 1088 @Override 1089 public NetworkInfo getNetworkInfoForUid(Network network, int uid, boolean ignoreBlocked) { 1090 enforceAccessPermission(); 1091 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1092 if (nai != null) { 1093 final NetworkState state = nai.getNetworkState(); 1094 filterNetworkStateForUid(state, uid, ignoreBlocked); 1095 return state.networkInfo; 1096 } else { 1097 return null; 1098 } 1099 } 1100 1101 @Override 1102 public NetworkInfo[] getAllNetworkInfo() { 1103 enforceAccessPermission(); 1104 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1105 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1106 networkType++) { 1107 NetworkInfo info = getNetworkInfo(networkType); 1108 if (info != null) { 1109 result.add(info); 1110 } 1111 } 1112 return result.toArray(new NetworkInfo[result.size()]); 1113 } 1114 1115 @Override 1116 public Network getNetworkForType(int networkType) { 1117 enforceAccessPermission(); 1118 final int uid = Binder.getCallingUid(); 1119 NetworkState state = getFilteredNetworkState(networkType, uid, false); 1120 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid, false)) { 1121 return state.network; 1122 } 1123 return null; 1124 } 1125 1126 @Override 1127 public Network[] getAllNetworks() { 1128 enforceAccessPermission(); 1129 synchronized (mNetworkForNetId) { 1130 final Network[] result = new Network[mNetworkForNetId.size()]; 1131 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1132 result[i] = mNetworkForNetId.valueAt(i).network; 1133 } 1134 return result; 1135 } 1136 } 1137 1138 @Override 1139 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1140 // The basic principle is: if an app's traffic could possibly go over a 1141 // network, without the app doing anything multinetwork-specific, 1142 // (hence, by "default"), then include that network's capabilities in 1143 // the array. 1144 // 1145 // In the normal case, app traffic only goes over the system's default 1146 // network connection, so that's the only network returned. 1147 // 1148 // With a VPN in force, some app traffic may go into the VPN, and thus 1149 // over whatever underlying networks the VPN specifies, while other app 1150 // traffic may go over the system default network (e.g.: a split-tunnel 1151 // VPN, or an app disallowed by the VPN), so the set of networks 1152 // returned includes the VPN's underlying networks and the system 1153 // default. 1154 enforceAccessPermission(); 1155 1156 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1157 1158 NetworkAgentInfo nai = getDefaultNetwork(); 1159 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1160 if (nc != null) { 1161 result.put(nai.network, nc); 1162 } 1163 1164 if (!mLockdownEnabled) { 1165 synchronized (mVpns) { 1166 Vpn vpn = mVpns.get(userId); 1167 if (vpn != null) { 1168 Network[] networks = vpn.getUnderlyingNetworks(); 1169 if (networks != null) { 1170 for (Network network : networks) { 1171 nai = getNetworkAgentInfoForNetwork(network); 1172 nc = getNetworkCapabilitiesInternal(nai); 1173 if (nc != null) { 1174 result.put(network, nc); 1175 } 1176 } 1177 } 1178 } 1179 } 1180 } 1181 1182 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1183 out = result.values().toArray(out); 1184 return out; 1185 } 1186 1187 @Override 1188 public boolean isNetworkSupported(int networkType) { 1189 enforceAccessPermission(); 1190 return mLegacyTypeTracker.isTypeSupported(networkType); 1191 } 1192 1193 /** 1194 * Return LinkProperties for the active (i.e., connected) default 1195 * network interface. It is assumed that at most one default network 1196 * is active at a time. If more than one is active, it is indeterminate 1197 * which will be returned. 1198 * @return the ip properties for the active network, or {@code null} if 1199 * none is active 1200 */ 1201 @Override 1202 public LinkProperties getActiveLinkProperties() { 1203 enforceAccessPermission(); 1204 final int uid = Binder.getCallingUid(); 1205 NetworkState state = getUnfilteredActiveNetworkState(uid); 1206 return state.linkProperties; 1207 } 1208 1209 @Override 1210 public LinkProperties getLinkPropertiesForType(int networkType) { 1211 enforceAccessPermission(); 1212 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1213 if (nai != null) { 1214 synchronized (nai) { 1215 return new LinkProperties(nai.linkProperties); 1216 } 1217 } 1218 return null; 1219 } 1220 1221 // TODO - this should be ALL networks 1222 @Override 1223 public LinkProperties getLinkProperties(Network network) { 1224 enforceAccessPermission(); 1225 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1226 if (nai != null) { 1227 synchronized (nai) { 1228 return new LinkProperties(nai.linkProperties); 1229 } 1230 } 1231 return null; 1232 } 1233 1234 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1235 if (nai != null) { 1236 synchronized (nai) { 1237 if (nai.networkCapabilities != null) { 1238 return new NetworkCapabilities(nai.networkCapabilities); 1239 } 1240 } 1241 } 1242 return null; 1243 } 1244 1245 @Override 1246 public NetworkCapabilities getNetworkCapabilities(Network network) { 1247 enforceAccessPermission(); 1248 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1249 } 1250 1251 @Override 1252 public NetworkState[] getAllNetworkState() { 1253 // Require internal since we're handing out IMSI details 1254 enforceConnectivityInternalPermission(); 1255 1256 final ArrayList<NetworkState> result = Lists.newArrayList(); 1257 for (Network network : getAllNetworks()) { 1258 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1259 if (nai != null) { 1260 result.add(nai.getNetworkState()); 1261 } 1262 } 1263 return result.toArray(new NetworkState[result.size()]); 1264 } 1265 1266 @Override 1267 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1268 enforceAccessPermission(); 1269 final int uid = Binder.getCallingUid(); 1270 final long token = Binder.clearCallingIdentity(); 1271 try { 1272 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1273 if (state.networkInfo != null) { 1274 try { 1275 return mPolicyManager.getNetworkQuotaInfo(state); 1276 } catch (RemoteException e) { 1277 } 1278 } 1279 return null; 1280 } finally { 1281 Binder.restoreCallingIdentity(token); 1282 } 1283 } 1284 1285 @Override 1286 public boolean isActiveNetworkMetered() { 1287 enforceAccessPermission(); 1288 1289 final NetworkInfo info = getActiveNetworkInfo(); 1290 return (info != null) ? info.isMetered() : false; 1291 } 1292 1293 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1294 @Override 1295 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1296 int deviceType = Integer.parseInt(label); 1297 sendDataActivityBroadcast(deviceType, active, tsNanos); 1298 } 1299 }; 1300 1301 /** 1302 * Ensure that a network route exists to deliver traffic to the specified 1303 * host via the specified network interface. 1304 * @param networkType the type of the network over which traffic to the 1305 * specified host is to be routed 1306 * @param hostAddress the IP address of the host to which the route is 1307 * desired 1308 * @return {@code true} on success, {@code false} on failure 1309 */ 1310 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1311 enforceChangePermission(); 1312 if (mProtectedNetworks.contains(networkType)) { 1313 enforceConnectivityInternalPermission(); 1314 } 1315 1316 InetAddress addr; 1317 try { 1318 addr = InetAddress.getByAddress(hostAddress); 1319 } catch (UnknownHostException e) { 1320 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1321 return false; 1322 } 1323 1324 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1325 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1326 return false; 1327 } 1328 1329 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1330 if (nai == null) { 1331 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1332 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1333 } else { 1334 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1335 } 1336 return false; 1337 } 1338 1339 DetailedState netState; 1340 synchronized (nai) { 1341 netState = nai.networkInfo.getDetailedState(); 1342 } 1343 1344 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1345 if (VDBG) { 1346 log("requestRouteToHostAddress on down network " 1347 + "(" + networkType + ") - dropped" 1348 + " netState=" + netState); 1349 } 1350 return false; 1351 } 1352 1353 final int uid = Binder.getCallingUid(); 1354 final long token = Binder.clearCallingIdentity(); 1355 try { 1356 LinkProperties lp; 1357 int netId; 1358 synchronized (nai) { 1359 lp = nai.linkProperties; 1360 netId = nai.network.netId; 1361 } 1362 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1363 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1364 return ok; 1365 } finally { 1366 Binder.restoreCallingIdentity(token); 1367 } 1368 } 1369 1370 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1371 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1372 if (bestRoute == null) { 1373 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1374 } else { 1375 String iface = bestRoute.getInterface(); 1376 if (bestRoute.getGateway().equals(addr)) { 1377 // if there is no better route, add the implied hostroute for our gateway 1378 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1379 } else { 1380 // if we will connect to this through another route, add a direct route 1381 // to it's gateway 1382 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1383 } 1384 } 1385 if (DBG) log("Adding legacy route " + bestRoute + 1386 " for UID/PID " + uid + "/" + Binder.getCallingPid()); 1387 try { 1388 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1389 } catch (Exception e) { 1390 // never crash - catch them all 1391 if (DBG) loge("Exception trying to add a route: " + e); 1392 return false; 1393 } 1394 return true; 1395 } 1396 1397 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1398 @Override 1399 public void onUidRulesChanged(int uid, int uidRules) { 1400 // caller is NPMS, since we only register with them 1401 if (LOGD_RULES) { 1402 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1403 } 1404 1405 synchronized (mRulesLock) { 1406 // skip update when we've already applied rules 1407 final int oldRules = mUidRules.get(uid, RULE_NONE); 1408 if (oldRules == uidRules) return; 1409 1410 mUidRules.put(uid, uidRules); 1411 } 1412 1413 // TODO: notify UID when it has requested targeted updates 1414 } 1415 1416 @Override 1417 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1418 // caller is NPMS, since we only register with them 1419 if (LOGD_RULES) { 1420 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1421 } 1422 1423 synchronized (mRulesLock) { 1424 mMeteredIfaces.clear(); 1425 for (String iface : meteredIfaces) { 1426 mMeteredIfaces.add(iface); 1427 } 1428 } 1429 } 1430 1431 @Override 1432 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1433 // caller is NPMS, since we only register with them 1434 if (LOGD_RULES) { 1435 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1436 } 1437 1438 synchronized (mRulesLock) { 1439 mRestrictBackground = restrictBackground; 1440 } 1441 1442 if (restrictBackground) { 1443 log("onRestrictBackgroundChanged(true): disabling tethering"); 1444 mTethering.untetherAll(); 1445 } 1446 } 1447 1448 @Override 1449 public void onRestrictPowerChanged(boolean restrictPower) { 1450 // caller is NPMS, since we only register with them 1451 if (LOGD_RULES) { 1452 log("onRestrictPowerChanged(restrictPower=" + restrictPower + ")"); 1453 } 1454 1455 synchronized (mRulesLock) { 1456 mRestrictPower = restrictPower; 1457 } 1458 } 1459 1460 @Override 1461 public void onRestrictBackgroundWhitelistChanged(int uid, boolean whitelisted) { 1462 if (LOGD_RULES) { 1463 // caller is NPMS, since we only register with them 1464 log("onRestrictBackgroundWhitelistChanged(uid=" + uid + ", whitelisted=" 1465 + whitelisted + ")"); 1466 } 1467 } 1468 }; 1469 1470 /** 1471 * Require that the caller is either in the same user or has appropriate permission to interact 1472 * across users. 1473 * 1474 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1475 */ 1476 private void enforceCrossUserPermission(int userId) { 1477 if (userId == UserHandle.getCallingUserId()) { 1478 // Not a cross-user call. 1479 return; 1480 } 1481 mContext.enforceCallingOrSelfPermission( 1482 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1483 "ConnectivityService"); 1484 } 1485 1486 private void enforceInternetPermission() { 1487 mContext.enforceCallingOrSelfPermission( 1488 android.Manifest.permission.INTERNET, 1489 "ConnectivityService"); 1490 } 1491 1492 private void enforceAccessPermission() { 1493 mContext.enforceCallingOrSelfPermission( 1494 android.Manifest.permission.ACCESS_NETWORK_STATE, 1495 "ConnectivityService"); 1496 } 1497 1498 private void enforceChangePermission() { 1499 ConnectivityManager.enforceChangePermission(mContext); 1500 } 1501 1502 private void enforceTetherAccessPermission() { 1503 mContext.enforceCallingOrSelfPermission( 1504 android.Manifest.permission.ACCESS_NETWORK_STATE, 1505 "ConnectivityService"); 1506 } 1507 1508 private void enforceConnectivityInternalPermission() { 1509 mContext.enforceCallingOrSelfPermission( 1510 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1511 "ConnectivityService"); 1512 } 1513 1514 private void enforceKeepalivePermission() { 1515 mContext.enforceCallingOrSelfPermission(KeepaliveTracker.PERMISSION, "ConnectivityService"); 1516 } 1517 1518 public void sendConnectedBroadcast(NetworkInfo info) { 1519 enforceConnectivityInternalPermission(); 1520 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1521 } 1522 1523 private void sendInetConditionBroadcast(NetworkInfo info) { 1524 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1525 } 1526 1527 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1528 if (mLockdownTracker != null) { 1529 info = new NetworkInfo(info); 1530 mLockdownTracker.augmentNetworkInfo(info); 1531 } 1532 1533 Intent intent = new Intent(bcastType); 1534 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1535 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1536 if (info.isFailover()) { 1537 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1538 info.setFailover(false); 1539 } 1540 if (info.getReason() != null) { 1541 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1542 } 1543 if (info.getExtraInfo() != null) { 1544 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1545 info.getExtraInfo()); 1546 } 1547 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1548 return intent; 1549 } 1550 1551 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1552 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1553 } 1554 1555 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1556 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1557 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1558 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1559 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1560 final long ident = Binder.clearCallingIdentity(); 1561 try { 1562 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1563 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1564 } finally { 1565 Binder.restoreCallingIdentity(ident); 1566 } 1567 } 1568 1569 private void sendStickyBroadcast(Intent intent) { 1570 synchronized(this) { 1571 if (!mSystemReady) { 1572 mInitialBroadcast = new Intent(intent); 1573 } 1574 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1575 if (VDBG) { 1576 log("sendStickyBroadcast: action=" + intent.getAction()); 1577 } 1578 1579 Bundle options = null; 1580 final long ident = Binder.clearCallingIdentity(); 1581 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1582 final NetworkInfo ni = intent.getParcelableExtra( 1583 ConnectivityManager.EXTRA_NETWORK_INFO); 1584 if (ni.getType() == ConnectivityManager.TYPE_MOBILE_SUPL) { 1585 intent.setAction(ConnectivityManager.CONNECTIVITY_ACTION_SUPL); 1586 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1587 } else { 1588 BroadcastOptions opts = BroadcastOptions.makeBasic(); 1589 opts.setMaxManifestReceiverApiLevel(Build.VERSION_CODES.M); 1590 options = opts.toBundle(); 1591 } 1592 final IBatteryStats bs = BatteryStatsService.getService(); 1593 try { 1594 bs.noteConnectivityChanged(intent.getIntExtra( 1595 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1596 ni != null ? ni.getState().toString() : "?"); 1597 } catch (RemoteException e) { 1598 } 1599 } 1600 try { 1601 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL, options); 1602 } finally { 1603 Binder.restoreCallingIdentity(ident); 1604 } 1605 } 1606 } 1607 1608 void systemReady() { 1609 loadGlobalProxy(); 1610 1611 synchronized(this) { 1612 mSystemReady = true; 1613 if (mInitialBroadcast != null) { 1614 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1615 mInitialBroadcast = null; 1616 } 1617 } 1618 // load the global proxy at startup 1619 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1620 1621 // Try bringing up tracker, but KeyStore won't be ready yet for secondary users so wait 1622 // for user to unlock device too. 1623 updateLockdownVpn(); 1624 1625 // Configure whether mobile data is always on. 1626 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1627 1628 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1629 1630 mPermissionMonitor.startMonitoring(); 1631 } 1632 1633 /** 1634 * Setup data activity tracking for the given network. 1635 * 1636 * Every {@code setupDataActivityTracking} should be paired with a 1637 * {@link #removeDataActivityTracking} for cleanup. 1638 */ 1639 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1640 final String iface = networkAgent.linkProperties.getInterfaceName(); 1641 1642 final int timeout; 1643 int type = ConnectivityManager.TYPE_NONE; 1644 1645 if (networkAgent.networkCapabilities.hasTransport( 1646 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1647 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1648 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1649 10); 1650 type = ConnectivityManager.TYPE_MOBILE; 1651 } else if (networkAgent.networkCapabilities.hasTransport( 1652 NetworkCapabilities.TRANSPORT_WIFI)) { 1653 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1654 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1655 15); 1656 type = ConnectivityManager.TYPE_WIFI; 1657 } else { 1658 // do not track any other networks 1659 timeout = 0; 1660 } 1661 1662 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1663 try { 1664 mNetd.addIdleTimer(iface, timeout, type); 1665 } catch (Exception e) { 1666 // You shall not crash! 1667 loge("Exception in setupDataActivityTracking " + e); 1668 } 1669 } 1670 } 1671 1672 /** 1673 * Remove data activity tracking when network disconnects. 1674 */ 1675 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1676 final String iface = networkAgent.linkProperties.getInterfaceName(); 1677 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1678 1679 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1680 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1681 try { 1682 // the call fails silently if no idletimer setup for this interface 1683 mNetd.removeIdleTimer(iface); 1684 } catch (Exception e) { 1685 loge("Exception in removeDataActivityTracking " + e); 1686 } 1687 } 1688 } 1689 1690 /** 1691 * Reads the network specific MTU size from reources. 1692 * and set it on it's iface. 1693 */ 1694 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1695 final String iface = newLp.getInterfaceName(); 1696 final int mtu = newLp.getMtu(); 1697 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1698 if (VDBG) log("identical MTU - not setting"); 1699 return; 1700 } 1701 1702 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1703 if (mtu != 0) loge("Unexpected mtu value: " + mtu + ", " + iface); 1704 return; 1705 } 1706 1707 // Cannot set MTU without interface name 1708 if (TextUtils.isEmpty(iface)) { 1709 loge("Setting MTU size with null iface."); 1710 return; 1711 } 1712 1713 try { 1714 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 1715 mNetd.setMtu(iface, mtu); 1716 } catch (Exception e) { 1717 Slog.e(TAG, "exception in setMtu()" + e); 1718 } 1719 } 1720 1721 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1722 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1723 1724 // Overridden for testing purposes to avoid writing to SystemProperties. 1725 @VisibleForTesting 1726 protected int getDefaultTcpRwnd() { 1727 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1728 } 1729 1730 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1731 if (isDefaultNetwork(nai) == false) { 1732 return; 1733 } 1734 1735 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1736 String[] values = null; 1737 if (tcpBufferSizes != null) { 1738 values = tcpBufferSizes.split(","); 1739 } 1740 1741 if (values == null || values.length != 6) { 1742 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1743 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1744 values = tcpBufferSizes.split(","); 1745 } 1746 1747 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1748 1749 try { 1750 if (VDBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1751 1752 final String prefix = "/sys/kernel/ipv4/tcp_"; 1753 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1754 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1755 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1756 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1757 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1758 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1759 mCurrentTcpBufferSizes = tcpBufferSizes; 1760 } catch (IOException e) { 1761 loge("Can't set TCP buffer sizes:" + e); 1762 } 1763 1764 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1765 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1766 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1767 if (rwndValue != 0) { 1768 SystemProperties.set(sysctlKey, rwndValue.toString()); 1769 } 1770 } 1771 1772 private void flushVmDnsCache() { 1773 /* 1774 * Tell the VMs to toss their DNS caches 1775 */ 1776 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1777 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1778 /* 1779 * Connectivity events can happen before boot has completed ... 1780 */ 1781 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1782 final long ident = Binder.clearCallingIdentity(); 1783 try { 1784 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1785 } finally { 1786 Binder.restoreCallingIdentity(ident); 1787 } 1788 } 1789 1790 @Override 1791 public int getRestoreDefaultNetworkDelay(int networkType) { 1792 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1793 NETWORK_RESTORE_DELAY_PROP_NAME); 1794 if(restoreDefaultNetworkDelayStr != null && 1795 restoreDefaultNetworkDelayStr.length() != 0) { 1796 try { 1797 return Integer.parseInt(restoreDefaultNetworkDelayStr); 1798 } catch (NumberFormatException e) { 1799 } 1800 } 1801 // if the system property isn't set, use the value for the apn type 1802 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1803 1804 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1805 (mNetConfigs[networkType] != null)) { 1806 ret = mNetConfigs[networkType].restoreTime; 1807 } 1808 return ret; 1809 } 1810 1811 private boolean argsContain(String[] args, String target) { 1812 for (String arg : args) { 1813 if (arg.equals(target)) return true; 1814 } 1815 return false; 1816 } 1817 1818 private void dumpNetworkDiagnostics(IndentingPrintWriter pw) { 1819 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1820 final long DIAG_TIME_MS = 5000; 1821 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1822 // Start gathering diagnostic information. 1823 netDiags.add(new NetworkDiagnostics( 1824 nai.network, 1825 new LinkProperties(nai.linkProperties), // Must be a copy. 1826 DIAG_TIME_MS)); 1827 } 1828 1829 for (NetworkDiagnostics netDiag : netDiags) { 1830 pw.println(); 1831 netDiag.waitForMeasurements(); 1832 netDiag.dump(pw); 1833 } 1834 } 1835 1836 @Override 1837 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1838 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1839 if (mContext.checkCallingOrSelfPermission( 1840 android.Manifest.permission.DUMP) 1841 != PackageManager.PERMISSION_GRANTED) { 1842 pw.println("Permission Denial: can't dump ConnectivityService " + 1843 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1844 Binder.getCallingUid()); 1845 return; 1846 } 1847 1848 if (argsContain(args, "--diag")) { 1849 dumpNetworkDiagnostics(pw); 1850 return; 1851 } 1852 1853 pw.print("NetworkFactories for:"); 1854 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1855 pw.print(" " + nfi.name); 1856 } 1857 pw.println(); 1858 pw.println(); 1859 1860 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 1861 pw.print("Active default network: "); 1862 if (defaultNai == null) { 1863 pw.println("none"); 1864 } else { 1865 pw.println(defaultNai.network.netId); 1866 } 1867 pw.println(); 1868 1869 pw.println("Current Networks:"); 1870 pw.increaseIndent(); 1871 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1872 pw.println(nai.toString()); 1873 pw.increaseIndent(); 1874 pw.println("Requests:"); 1875 pw.increaseIndent(); 1876 for (int i = 0; i < nai.networkRequests.size(); i++) { 1877 pw.println(nai.networkRequests.valueAt(i).toString()); 1878 } 1879 pw.decreaseIndent(); 1880 pw.println("Lingered:"); 1881 pw.increaseIndent(); 1882 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1883 pw.decreaseIndent(); 1884 pw.decreaseIndent(); 1885 } 1886 pw.decreaseIndent(); 1887 pw.println(); 1888 1889 pw.println("Metered Interfaces:"); 1890 pw.increaseIndent(); 1891 for (String value : mMeteredIfaces) { 1892 pw.println(value); 1893 } 1894 pw.decreaseIndent(); 1895 pw.println(); 1896 1897 pw.print("Restrict background: "); 1898 pw.println(mRestrictBackground); 1899 pw.println(); 1900 1901 pw.print("Restrict power: "); 1902 pw.println(mRestrictPower); 1903 pw.println(); 1904 1905 pw.println("Status for known UIDs:"); 1906 pw.increaseIndent(); 1907 final int size = mUidRules.size(); 1908 for (int i = 0; i < size; i++) { 1909 final int uid = mUidRules.keyAt(i); 1910 pw.print("UID="); 1911 pw.print(uid); 1912 final int uidRules = mUidRules.get(uid, RULE_NONE); 1913 pw.print(" rules="); 1914 pw.print(uidRulesToString(uidRules)); 1915 pw.println(); 1916 } 1917 pw.println(); 1918 pw.decreaseIndent(); 1919 1920 pw.println("Network Requests:"); 1921 pw.increaseIndent(); 1922 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1923 pw.println(nri.toString()); 1924 } 1925 pw.println(); 1926 pw.decreaseIndent(); 1927 1928 mLegacyTypeTracker.dump(pw); 1929 1930 synchronized (this) { 1931 pw.print("mNetTransitionWakeLock: currently " + 1932 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1933 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1934 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1935 } else { 1936 pw.println(", last requested never"); 1937 } 1938 } 1939 1940 pw.println(); 1941 mTethering.dump(fd, pw, args); 1942 1943 pw.println(); 1944 mKeepaliveTracker.dump(pw); 1945 1946 pw.println(); 1947 1948 if (mInetLog != null && mInetLog.size() > 0) { 1949 pw.println(); 1950 pw.println("Inet condition reports:"); 1951 pw.increaseIndent(); 1952 for(int i = 0; i < mInetLog.size(); i++) { 1953 pw.println(mInetLog.get(i)); 1954 } 1955 pw.decreaseIndent(); 1956 } 1957 1958 if (argsContain(args, "--short") == false) { 1959 pw.println(); 1960 synchronized (mValidationLogs) { 1961 pw.println("mValidationLogs (most recent first):"); 1962 for (Pair<Network,ReadOnlyLocalLog> p : mValidationLogs) { 1963 pw.println(p.first); 1964 pw.increaseIndent(); 1965 p.second.dump(fd, pw, args); 1966 pw.decreaseIndent(); 1967 } 1968 } 1969 1970 pw.println(); 1971 pw.println("mNetworkRequestInfoLogs (most recent first):"); 1972 pw.increaseIndent(); 1973 mNetworkRequestInfoLogs.reverseDump(fd, pw, args); 1974 pw.decreaseIndent(); 1975 } 1976 } 1977 1978 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, int what) { 1979 if (nai.network == null) return false; 1980 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1981 if (officialNai != null && officialNai.equals(nai)) return true; 1982 if (officialNai != null || VDBG) { 1983 final String msg = sMagicDecoderRing.get(what, Integer.toString(what)); 1984 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1985 " - " + nai); 1986 } 1987 return false; 1988 } 1989 1990 private boolean isRequest(NetworkRequest request) { 1991 return mNetworkRequests.get(request).isRequest(); 1992 } 1993 1994 // must be stateless - things change under us. 1995 private class NetworkStateTrackerHandler extends Handler { 1996 public NetworkStateTrackerHandler(Looper looper) { 1997 super(looper); 1998 } 1999 2000 private boolean maybeHandleAsyncChannelMessage(Message msg) { 2001 switch (msg.what) { 2002 default: 2003 return false; 2004 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 2005 handleAsyncChannelHalfConnect(msg); 2006 break; 2007 } 2008 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 2009 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2010 if (nai != null) nai.asyncChannel.disconnect(); 2011 break; 2012 } 2013 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 2014 handleAsyncChannelDisconnected(msg); 2015 break; 2016 } 2017 } 2018 return true; 2019 } 2020 2021 private void maybeHandleNetworkAgentMessage(Message msg) { 2022 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2023 if (nai == null) { 2024 if (VDBG) { 2025 final String what = sMagicDecoderRing.get(msg.what, Integer.toString(msg.what)); 2026 log(String.format("%s from unknown NetworkAgent", what)); 2027 } 2028 return; 2029 } 2030 2031 switch (msg.what) { 2032 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 2033 final NetworkCapabilities networkCapabilities = (NetworkCapabilities) msg.obj; 2034 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL) || 2035 networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 2036 Slog.wtf(TAG, "BUG: " + nai + " has CS-managed capability."); 2037 } 2038 if (nai.everConnected && !nai.networkCapabilities.equalImmutableCapabilities( 2039 networkCapabilities)) { 2040 Slog.wtf(TAG, "BUG: " + nai + " changed immutable capabilities: " 2041 + nai.networkCapabilities + " -> " + networkCapabilities); 2042 } 2043 updateCapabilities(nai, networkCapabilities); 2044 break; 2045 } 2046 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 2047 if (VDBG) { 2048 log("Update of LinkProperties for " + nai.name() + 2049 "; created=" + nai.created + 2050 "; everConnected=" + nai.everConnected); 2051 } 2052 LinkProperties oldLp = nai.linkProperties; 2053 synchronized (nai) { 2054 nai.linkProperties = (LinkProperties)msg.obj; 2055 } 2056 if (nai.everConnected) updateLinkProperties(nai, oldLp); 2057 break; 2058 } 2059 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 2060 NetworkInfo info = (NetworkInfo) msg.obj; 2061 updateNetworkInfo(nai, info); 2062 break; 2063 } 2064 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 2065 Integer score = (Integer) msg.obj; 2066 if (score != null) updateNetworkScore(nai, score.intValue()); 2067 break; 2068 } 2069 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 2070 try { 2071 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2072 } catch (Exception e) { 2073 // Never crash! 2074 loge("Exception in addVpnUidRanges: " + e); 2075 } 2076 break; 2077 } 2078 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 2079 try { 2080 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2081 } catch (Exception e) { 2082 // Never crash! 2083 loge("Exception in removeVpnUidRanges: " + e); 2084 } 2085 break; 2086 } 2087 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 2088 if (nai.everConnected && !nai.networkMisc.explicitlySelected) { 2089 loge("ERROR: already-connected network explicitly selected."); 2090 } 2091 nai.networkMisc.explicitlySelected = true; 2092 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 2093 break; 2094 } 2095 case NetworkAgent.EVENT_PACKET_KEEPALIVE: { 2096 mKeepaliveTracker.handleEventPacketKeepalive(nai, msg); 2097 break; 2098 } 2099 } 2100 } 2101 2102 private boolean maybeHandleNetworkMonitorMessage(Message msg) { 2103 switch (msg.what) { 2104 default: 2105 return false; 2106 case NetworkMonitor.EVENT_NETWORK_TESTED: { 2107 final NetworkAgentInfo nai; 2108 synchronized (mNetworkForNetId) { 2109 nai = mNetworkForNetId.get(msg.arg2); 2110 } 2111 if (nai != null) { 2112 final boolean valid = 2113 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2114 if (DBG) log(nai.name() + " validation " + (valid ? "passed" : "failed") + 2115 (msg.obj == null ? "" : " with redirect to " + (String)msg.obj)); 2116 if (valid != nai.lastValidated) { 2117 final int oldScore = nai.getCurrentScore(); 2118 nai.lastValidated = valid; 2119 nai.everValidated |= valid; 2120 updateCapabilities(nai, nai.networkCapabilities); 2121 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2122 if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); 2123 } 2124 updateInetCondition(nai); 2125 // Let the NetworkAgent know the state of its network 2126 Bundle redirectUrlBundle = new Bundle(); 2127 redirectUrlBundle.putString(NetworkAgent.REDIRECT_URL_KEY, (String)msg.obj); 2128 nai.asyncChannel.sendMessage( 2129 NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2130 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2131 0, redirectUrlBundle); 2132 } 2133 break; 2134 } 2135 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2136 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2137 if (isLiveNetworkAgent(nai, msg.what)) { 2138 handleLingerComplete(nai); 2139 } 2140 break; 2141 } 2142 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2143 final int netId = msg.arg2; 2144 final boolean visible = (msg.arg1 != 0); 2145 final NetworkAgentInfo nai; 2146 synchronized (mNetworkForNetId) { 2147 nai = mNetworkForNetId.get(netId); 2148 } 2149 // If captive portal status has changed, update capabilities. 2150 if (nai != null && (visible != nai.lastCaptivePortalDetected)) { 2151 nai.lastCaptivePortalDetected = visible; 2152 nai.everCaptivePortalDetected |= visible; 2153 updateCapabilities(nai, nai.networkCapabilities); 2154 } 2155 if (!visible) { 2156 setProvNotificationVisibleIntent(false, netId, null, 0, null, null, false); 2157 } else { 2158 if (nai == null) { 2159 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2160 break; 2161 } 2162 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2163 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), 2164 (PendingIntent)msg.obj, nai.networkMisc.explicitlySelected); 2165 } 2166 break; 2167 } 2168 } 2169 return true; 2170 } 2171 2172 @Override 2173 public void handleMessage(Message msg) { 2174 if (!maybeHandleAsyncChannelMessage(msg) && !maybeHandleNetworkMonitorMessage(msg)) { 2175 maybeHandleNetworkAgentMessage(msg); 2176 } 2177 } 2178 } 2179 2180 private void linger(NetworkAgentInfo nai) { 2181 nai.lingering = true; 2182 NetworkEvent.logEvent(nai.network.netId, NetworkEvent.NETWORK_LINGER); 2183 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 2184 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 2185 } 2186 2187 // Cancel any lingering so the linger timeout doesn't teardown a network. 2188 // This should be called when a network begins satisfying a NetworkRequest. 2189 // Note: depending on what state the NetworkMonitor is in (e.g., 2190 // if it's awaiting captive portal login, or if validation failed), this 2191 // may trigger a re-evaluation of the network. 2192 private void unlinger(NetworkAgentInfo nai) { 2193 nai.networkLingered.clear(); 2194 if (!nai.lingering) return; 2195 nai.lingering = false; 2196 NetworkEvent.logEvent(nai.network.netId, NetworkEvent.NETWORK_UNLINGER); 2197 if (VDBG) log("Canceling linger of " + nai.name()); 2198 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2199 } 2200 2201 private void handleAsyncChannelHalfConnect(Message msg) { 2202 AsyncChannel ac = (AsyncChannel) msg.obj; 2203 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2204 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2205 if (VDBG) log("NetworkFactory connected"); 2206 // A network factory has connected. Send it all current NetworkRequests. 2207 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2208 if (!nri.isRequest()) continue; 2209 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2210 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2211 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2212 } 2213 } else { 2214 loge("Error connecting NetworkFactory"); 2215 mNetworkFactoryInfos.remove(msg.obj); 2216 } 2217 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2218 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2219 if (VDBG) log("NetworkAgent connected"); 2220 // A network agent has requested a connection. Establish the connection. 2221 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2222 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2223 } else { 2224 loge("Error connecting NetworkAgent"); 2225 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2226 if (nai != null) { 2227 final boolean wasDefault = isDefaultNetwork(nai); 2228 synchronized (mNetworkForNetId) { 2229 mNetworkForNetId.remove(nai.network.netId); 2230 mNetIdInUse.delete(nai.network.netId); 2231 } 2232 // Just in case. 2233 mLegacyTypeTracker.remove(nai, wasDefault); 2234 } 2235 } 2236 } 2237 } 2238 2239 private void handleAsyncChannelDisconnected(Message msg) { 2240 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2241 if (nai != null) { 2242 if (DBG) { 2243 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2244 } 2245 // A network agent has disconnected. 2246 // TODO - if we move the logic to the network agent (have them disconnect 2247 // because they lost all their requests or because their score isn't good) 2248 // then they would disconnect organically, report their new state and then 2249 // disconnect the channel. 2250 if (nai.networkInfo.isConnected()) { 2251 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2252 null, null); 2253 } 2254 final boolean wasDefault = isDefaultNetwork(nai); 2255 if (wasDefault) { 2256 mDefaultInetConditionPublished = 0; 2257 } 2258 notifyIfacesChangedForNetworkStats(); 2259 // TODO - we shouldn't send CALLBACK_LOST to requests that can be satisfied 2260 // by other networks that are already connected. Perhaps that can be done by 2261 // sending all CALLBACK_LOST messages (for requests, not listens) at the end 2262 // of rematchAllNetworksAndRequests 2263 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2264 mKeepaliveTracker.handleStopAllKeepalives(nai, 2265 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 2266 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2267 mNetworkAgentInfos.remove(msg.replyTo); 2268 updateClat(null, nai.linkProperties, nai); 2269 synchronized (mNetworkForNetId) { 2270 // Remove the NetworkAgent, but don't mark the netId as 2271 // available until we've told netd to delete it below. 2272 mNetworkForNetId.remove(nai.network.netId); 2273 } 2274 // Remove all previously satisfied requests. 2275 for (int i = 0; i < nai.networkRequests.size(); i++) { 2276 NetworkRequest request = nai.networkRequests.valueAt(i); 2277 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2278 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2279 mNetworkForRequestId.remove(request.requestId); 2280 sendUpdatedScoreToFactories(request, 0); 2281 } 2282 } 2283 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2284 removeDataActivityTracking(nai); 2285 notifyLockdownVpn(nai); 2286 requestNetworkTransitionWakelock(nai.name()); 2287 } 2288 mLegacyTypeTracker.remove(nai, wasDefault); 2289 rematchAllNetworksAndRequests(null, 0); 2290 if (wasDefault && getDefaultNetwork() == null) { 2291 // Log that we lost the default network and there is no replacement. 2292 logDefaultNetworkEvent(null, nai); 2293 } 2294 if (nai.created) { 2295 // Tell netd to clean up the configuration for this network 2296 // (routing rules, DNS, etc). 2297 // This may be slow as it requires a lot of netd shelling out to ip and 2298 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2299 // after we've rematched networks with requests which should make a potential 2300 // fallback network the default or requested a new network from the 2301 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2302 // long time. 2303 try { 2304 mNetd.removeNetwork(nai.network.netId); 2305 } catch (Exception e) { 2306 loge("Exception removing network: " + e); 2307 } 2308 } 2309 synchronized (mNetworkForNetId) { 2310 mNetIdInUse.delete(nai.network.netId); 2311 } 2312 } else { 2313 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2314 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2315 } 2316 } 2317 2318 // If this method proves to be too slow then we can maintain a separate 2319 // pendingIntent => NetworkRequestInfo map. 2320 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2321 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2322 Intent intent = pendingIntent.getIntent(); 2323 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2324 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2325 if (existingPendingIntent != null && 2326 existingPendingIntent.getIntent().filterEquals(intent)) { 2327 return entry.getValue(); 2328 } 2329 } 2330 return null; 2331 } 2332 2333 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2334 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2335 2336 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2337 if (existingRequest != null) { // remove the existing request. 2338 if (DBG) log("Replacing " + existingRequest.request + " with " 2339 + nri.request + " because their intents matched."); 2340 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2341 } 2342 handleRegisterNetworkRequest(nri); 2343 } 2344 2345 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2346 mNetworkRequests.put(nri.request, nri); 2347 mNetworkRequestInfoLogs.log("REGISTER " + nri); 2348 if (!nri.isRequest()) { 2349 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2350 if (nri.request.networkCapabilities.hasSignalStrength() && 2351 network.satisfiesImmutableCapabilitiesOf(nri.request)) { 2352 updateSignalStrengthThresholds(network, "REGISTER", nri.request); 2353 } 2354 } 2355 } 2356 rematchAllNetworksAndRequests(null, 0); 2357 if (nri.isRequest() && mNetworkForRequestId.get(nri.request.requestId) == null) { 2358 sendUpdatedScoreToFactories(nri.request, 0); 2359 } 2360 } 2361 2362 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2363 int callingUid) { 2364 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2365 if (nri != null) { 2366 handleReleaseNetworkRequest(nri.request, callingUid); 2367 } 2368 } 2369 2370 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2371 // This is whether it is satisfying any NetworkRequests or were it to become validated, 2372 // would it have a chance of satisfying any NetworkRequests. 2373 private boolean unneeded(NetworkAgentInfo nai) { 2374 if (!nai.everConnected || nai.isVPN() || nai.lingering) return false; 2375 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2376 // If this Network is already the highest scoring Network for a request, or if 2377 // there is hope for it to become one if it validated, then it is needed. 2378 if (nri.isRequest() && nai.satisfies(nri.request) && 2379 (nai.networkRequests.get(nri.request.requestId) != null || 2380 // Note that this catches two important cases: 2381 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2382 // is currently satisfying the request. This is desirable when 2383 // cellular ends up validating but WiFi does not. 2384 // 2. Unvalidated WiFi will not be reaped when validated cellular 2385 // is currently satisfying the request. This is desirable when 2386 // WiFi ends up validating and out scoring cellular. 2387 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2388 nai.getCurrentScoreAsValidated())) { 2389 return false; 2390 } 2391 } 2392 return true; 2393 } 2394 2395 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2396 NetworkRequestInfo nri = mNetworkRequests.get(request); 2397 if (nri != null) { 2398 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2399 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2400 return; 2401 } 2402 if (VDBG || (DBG && nri.isRequest())) log("releasing NetworkRequest " + request); 2403 nri.unlinkDeathRecipient(); 2404 mNetworkRequests.remove(request); 2405 synchronized (mUidToNetworkRequestCount) { 2406 int requests = mUidToNetworkRequestCount.get(nri.mUid, 0); 2407 if (requests < 1) { 2408 Slog.wtf(TAG, "BUG: too small request count " + requests + " for UID " + 2409 nri.mUid); 2410 } else if (requests == 1) { 2411 mUidToNetworkRequestCount.removeAt( 2412 mUidToNetworkRequestCount.indexOfKey(nri.mUid)); 2413 } else { 2414 mUidToNetworkRequestCount.put(nri.mUid, requests - 1); 2415 } 2416 } 2417 mNetworkRequestInfoLogs.log("RELEASE " + nri); 2418 if (nri.isRequest()) { 2419 // Find all networks that are satisfying this request and remove the request 2420 // from their request lists. 2421 // TODO - it's my understanding that for a request there is only a single 2422 // network satisfying it, so this loop is wasteful 2423 boolean wasKept = false; 2424 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2425 if (nai.networkRequests.get(nri.request.requestId) != null) { 2426 nai.networkRequests.remove(nri.request.requestId); 2427 if (VDBG) { 2428 log(" Removing from current network " + nai.name() + 2429 ", leaving " + nai.networkRequests.size() + 2430 " requests."); 2431 } 2432 if (unneeded(nai)) { 2433 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2434 teardownUnneededNetwork(nai); 2435 } else { 2436 // suspect there should only be one pass through here 2437 // but if any were kept do the check below 2438 wasKept |= true; 2439 } 2440 } 2441 } 2442 2443 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2444 if (nai != null) { 2445 mNetworkForRequestId.remove(nri.request.requestId); 2446 } 2447 // Maintain the illusion. When this request arrived, we might have pretended 2448 // that a network connected to serve it, even though the network was already 2449 // connected. Now that this request has gone away, we might have to pretend 2450 // that the network disconnected. LegacyTypeTracker will generate that 2451 // phantom disconnect for this type. 2452 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2453 boolean doRemove = true; 2454 if (wasKept) { 2455 // check if any of the remaining requests for this network are for the 2456 // same legacy type - if so, don't remove the nai 2457 for (int i = 0; i < nai.networkRequests.size(); i++) { 2458 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2459 if (otherRequest.legacyType == nri.request.legacyType && 2460 isRequest(otherRequest)) { 2461 if (DBG) log(" still have other legacy request - leaving"); 2462 doRemove = false; 2463 } 2464 } 2465 } 2466 2467 if (doRemove) { 2468 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2469 } 2470 } 2471 2472 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2473 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2474 nri.request); 2475 } 2476 } else { 2477 // listens don't have a singular affectedNetwork. Check all networks to see 2478 // if this listen request applies and remove it. 2479 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2480 nai.networkRequests.remove(nri.request.requestId); 2481 if (nri.request.networkCapabilities.hasSignalStrength() && 2482 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 2483 updateSignalStrengthThresholds(nai, "RELEASE", nri.request); 2484 } 2485 } 2486 } 2487 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2488 } 2489 } 2490 2491 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2492 enforceConnectivityInternalPermission(); 2493 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2494 accept ? 1 : 0, always ? 1: 0, network)); 2495 } 2496 2497 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2498 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2499 " accept=" + accept + " always=" + always); 2500 2501 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2502 if (nai == null) { 2503 // Nothing to do. 2504 return; 2505 } 2506 2507 if (nai.everValidated) { 2508 // The network validated while the dialog box was up. Take no action. 2509 return; 2510 } 2511 2512 if (!nai.networkMisc.explicitlySelected) { 2513 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2514 } 2515 2516 if (accept != nai.networkMisc.acceptUnvalidated) { 2517 int oldScore = nai.getCurrentScore(); 2518 nai.networkMisc.acceptUnvalidated = accept; 2519 rematchAllNetworksAndRequests(nai, oldScore); 2520 sendUpdatedScoreToFactories(nai); 2521 } 2522 2523 if (always) { 2524 nai.asyncChannel.sendMessage( 2525 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2526 } 2527 2528 if (!accept) { 2529 // Tell the NetworkAgent to not automatically reconnect to the network. 2530 nai.asyncChannel.sendMessage(NetworkAgent.CMD_PREVENT_AUTOMATIC_RECONNECT); 2531 // Teardown the nework. 2532 teardownUnneededNetwork(nai); 2533 } 2534 2535 } 2536 2537 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2538 if (VDBG) log("scheduleUnvalidatedPrompt " + nai.network); 2539 mHandler.sendMessageDelayed( 2540 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2541 PROMPT_UNVALIDATED_DELAY_MS); 2542 } 2543 2544 private void handlePromptUnvalidated(Network network) { 2545 if (VDBG) log("handlePromptUnvalidated " + network); 2546 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2547 2548 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2549 // we haven't already been told to switch to it regardless of whether it validated or not. 2550 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2551 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2552 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2553 return; 2554 } 2555 2556 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2557 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2558 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2559 intent.setClassName("com.android.settings", 2560 "com.android.settings.wifi.WifiNoInternetDialog"); 2561 2562 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2563 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2564 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2565 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent, true); 2566 } 2567 2568 private class InternalHandler extends Handler { 2569 public InternalHandler(Looper looper) { 2570 super(looper); 2571 } 2572 2573 @Override 2574 public void handleMessage(Message msg) { 2575 switch (msg.what) { 2576 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2577 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2578 String causedBy = null; 2579 synchronized (ConnectivityService.this) { 2580 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2581 mNetTransitionWakeLock.isHeld()) { 2582 mNetTransitionWakeLock.release(); 2583 causedBy = mNetTransitionWakeLockCausedBy; 2584 } else { 2585 break; 2586 } 2587 } 2588 if (VDBG) { 2589 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2590 log("Failed to find a new network - expiring NetTransition Wakelock"); 2591 } else { 2592 log("NetTransition Wakelock (" + 2593 (causedBy == null ? "unknown" : causedBy) + 2594 " cleared because we found a replacement network"); 2595 } 2596 } 2597 break; 2598 } 2599 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2600 handleDeprecatedGlobalHttpProxy(); 2601 break; 2602 } 2603 case EVENT_PROXY_HAS_CHANGED: { 2604 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2605 break; 2606 } 2607 case EVENT_REGISTER_NETWORK_FACTORY: { 2608 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2609 break; 2610 } 2611 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2612 handleUnregisterNetworkFactory((Messenger)msg.obj); 2613 break; 2614 } 2615 case EVENT_REGISTER_NETWORK_AGENT: { 2616 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2617 break; 2618 } 2619 case EVENT_REGISTER_NETWORK_REQUEST: 2620 case EVENT_REGISTER_NETWORK_LISTENER: { 2621 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2622 break; 2623 } 2624 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2625 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2626 handleRegisterNetworkRequestWithIntent(msg); 2627 break; 2628 } 2629 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2630 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2631 break; 2632 } 2633 case EVENT_RELEASE_NETWORK_REQUEST: { 2634 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2635 break; 2636 } 2637 case EVENT_SET_ACCEPT_UNVALIDATED: { 2638 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2639 break; 2640 } 2641 case EVENT_PROMPT_UNVALIDATED: { 2642 handlePromptUnvalidated((Network) msg.obj); 2643 break; 2644 } 2645 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2646 handleMobileDataAlwaysOn(); 2647 break; 2648 } 2649 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2650 case NetworkAgent.CMD_START_PACKET_KEEPALIVE: { 2651 mKeepaliveTracker.handleStartKeepalive(msg); 2652 break; 2653 } 2654 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2655 case NetworkAgent.CMD_STOP_PACKET_KEEPALIVE: { 2656 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork((Network) msg.obj); 2657 int slot = msg.arg1; 2658 int reason = msg.arg2; 2659 mKeepaliveTracker.handleStopKeepalive(nai, slot, reason); 2660 break; 2661 } 2662 case EVENT_SYSTEM_READY: { 2663 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2664 nai.networkMonitor.systemReady = true; 2665 } 2666 break; 2667 } 2668 } 2669 } 2670 } 2671 2672 // javadoc from interface 2673 public int tether(String iface) { 2674 ConnectivityManager.enforceTetherChangePermission(mContext); 2675 if (isTetheringSupported()) { 2676 final int status = mTethering.tether(iface); 2677 if (status == ConnectivityManager.TETHER_ERROR_NO_ERROR) { 2678 try { 2679 mPolicyManager.onTetheringChanged(iface, true); 2680 } catch (RemoteException e) { 2681 } 2682 } 2683 return status; 2684 } else { 2685 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2686 } 2687 } 2688 2689 // javadoc from interface 2690 public int untether(String iface) { 2691 ConnectivityManager.enforceTetherChangePermission(mContext); 2692 2693 if (isTetheringSupported()) { 2694 final int status = mTethering.untether(iface); 2695 if (status == ConnectivityManager.TETHER_ERROR_NO_ERROR) { 2696 try { 2697 mPolicyManager.onTetheringChanged(iface, false); 2698 } catch (RemoteException e) { 2699 } 2700 } 2701 return status; 2702 } else { 2703 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2704 } 2705 } 2706 2707 // javadoc from interface 2708 public int getLastTetherError(String iface) { 2709 enforceTetherAccessPermission(); 2710 2711 if (isTetheringSupported()) { 2712 return mTethering.getLastTetherError(iface); 2713 } else { 2714 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2715 } 2716 } 2717 2718 // TODO - proper iface API for selection by property, inspection, etc 2719 public String[] getTetherableUsbRegexs() { 2720 enforceTetherAccessPermission(); 2721 if (isTetheringSupported()) { 2722 return mTethering.getTetherableUsbRegexs(); 2723 } else { 2724 return new String[0]; 2725 } 2726 } 2727 2728 public String[] getTetherableWifiRegexs() { 2729 enforceTetherAccessPermission(); 2730 if (isTetheringSupported()) { 2731 return mTethering.getTetherableWifiRegexs(); 2732 } else { 2733 return new String[0]; 2734 } 2735 } 2736 2737 public String[] getTetherableBluetoothRegexs() { 2738 enforceTetherAccessPermission(); 2739 if (isTetheringSupported()) { 2740 return mTethering.getTetherableBluetoothRegexs(); 2741 } else { 2742 return new String[0]; 2743 } 2744 } 2745 2746 public int setUsbTethering(boolean enable) { 2747 ConnectivityManager.enforceTetherChangePermission(mContext); 2748 if (isTetheringSupported()) { 2749 return mTethering.setUsbTethering(enable); 2750 } else { 2751 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2752 } 2753 } 2754 2755 // TODO - move iface listing, queries, etc to new module 2756 // javadoc from interface 2757 public String[] getTetherableIfaces() { 2758 enforceTetherAccessPermission(); 2759 return mTethering.getTetherableIfaces(); 2760 } 2761 2762 public String[] getTetheredIfaces() { 2763 enforceTetherAccessPermission(); 2764 return mTethering.getTetheredIfaces(); 2765 } 2766 2767 public String[] getTetheringErroredIfaces() { 2768 enforceTetherAccessPermission(); 2769 return mTethering.getErroredIfaces(); 2770 } 2771 2772 public String[] getTetheredDhcpRanges() { 2773 enforceConnectivityInternalPermission(); 2774 return mTethering.getTetheredDhcpRanges(); 2775 } 2776 2777 // if ro.tether.denied = true we default to no tethering 2778 // gservices could set the secure setting to 1 though to enable it on a build where it 2779 // had previously been turned off. 2780 @Override 2781 public boolean isTetheringSupported() { 2782 enforceTetherAccessPermission(); 2783 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2784 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2785 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2786 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2787 return tetherEnabledInSettings && mUserManager.isAdminUser() && 2788 ((mTethering.getTetherableUsbRegexs().length != 0 || 2789 mTethering.getTetherableWifiRegexs().length != 0 || 2790 mTethering.getTetherableBluetoothRegexs().length != 0) && 2791 mTethering.getUpstreamIfaceTypes().length != 0); 2792 } 2793 2794 @Override 2795 public void startTethering(int type, ResultReceiver receiver, 2796 boolean showProvisioningUi) { 2797 ConnectivityManager.enforceTetherChangePermission(mContext); 2798 if (!isTetheringSupported()) { 2799 receiver.send(ConnectivityManager.TETHER_ERROR_UNSUPPORTED, null); 2800 return; 2801 } 2802 mTethering.startTethering(type, receiver, showProvisioningUi); 2803 } 2804 2805 @Override 2806 public void stopTethering(int type) { 2807 ConnectivityManager.enforceTetherChangePermission(mContext); 2808 mTethering.stopTethering(type); 2809 } 2810 2811 // Called when we lose the default network and have no replacement yet. 2812 // This will automatically be cleared after X seconds or a new default network 2813 // becomes CONNECTED, whichever happens first. The timer is started by the 2814 // first caller and not restarted by subsequent callers. 2815 private void requestNetworkTransitionWakelock(String forWhom) { 2816 int serialNum = 0; 2817 synchronized (this) { 2818 if (mNetTransitionWakeLock.isHeld()) return; 2819 serialNum = ++mNetTransitionWakeLockSerialNumber; 2820 mNetTransitionWakeLock.acquire(); 2821 mNetTransitionWakeLockCausedBy = forWhom; 2822 } 2823 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2824 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2825 mNetTransitionWakeLockTimeout); 2826 return; 2827 } 2828 2829 // 100 percent is full good, 0 is full bad. 2830 public void reportInetCondition(int networkType, int percentage) { 2831 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2832 if (nai == null) return; 2833 reportNetworkConnectivity(nai.network, percentage > 50); 2834 } 2835 2836 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2837 enforceAccessPermission(); 2838 enforceInternetPermission(); 2839 2840 NetworkAgentInfo nai; 2841 if (network == null) { 2842 nai = getDefaultNetwork(); 2843 } else { 2844 nai = getNetworkAgentInfoForNetwork(network); 2845 } 2846 if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || 2847 nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { 2848 return; 2849 } 2850 // Revalidate if the app report does not match our current validated state. 2851 if (hasConnectivity == nai.lastValidated) return; 2852 final int uid = Binder.getCallingUid(); 2853 if (DBG) { 2854 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2855 ") by " + uid); 2856 } 2857 synchronized (nai) { 2858 // Validating a network that has not yet connected could result in a call to 2859 // rematchNetworkAndRequests() which is not meant to work on such networks. 2860 if (!nai.everConnected) return; 2861 2862 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid, false)) return; 2863 2864 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2865 } 2866 } 2867 2868 private ProxyInfo getDefaultProxy() { 2869 // this information is already available as a world read/writable jvm property 2870 // so this API change wouldn't have a benifit. It also breaks the passing 2871 // of proxy info to all the JVMs. 2872 // enforceAccessPermission(); 2873 synchronized (mProxyLock) { 2874 ProxyInfo ret = mGlobalProxy; 2875 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2876 return ret; 2877 } 2878 } 2879 2880 public ProxyInfo getProxyForNetwork(Network network) { 2881 if (network == null) return getDefaultProxy(); 2882 final ProxyInfo globalProxy = getGlobalProxy(); 2883 if (globalProxy != null) return globalProxy; 2884 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2885 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2886 // caller may not have. 2887 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2888 if (nai == null) return null; 2889 synchronized (nai) { 2890 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2891 if (proxyInfo == null) return null; 2892 return new ProxyInfo(proxyInfo); 2893 } 2894 } 2895 2896 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2897 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2898 // proxy is null then there is no proxy in place). 2899 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2900 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2901 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2902 proxy = null; 2903 } 2904 return proxy; 2905 } 2906 2907 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2908 // better for determining if a new proxy broadcast is necessary: 2909 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2910 // avoid unnecessary broadcasts. 2911 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2912 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2913 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2914 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2915 // all set. 2916 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2917 a = canonicalizeProxyInfo(a); 2918 b = canonicalizeProxyInfo(b); 2919 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2920 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2921 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2922 } 2923 2924 public void setGlobalProxy(ProxyInfo proxyProperties) { 2925 enforceConnectivityInternalPermission(); 2926 2927 synchronized (mProxyLock) { 2928 if (proxyProperties == mGlobalProxy) return; 2929 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2930 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2931 2932 String host = ""; 2933 int port = 0; 2934 String exclList = ""; 2935 String pacFileUrl = ""; 2936 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2937 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2938 if (!proxyProperties.isValid()) { 2939 if (DBG) 2940 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2941 return; 2942 } 2943 mGlobalProxy = new ProxyInfo(proxyProperties); 2944 host = mGlobalProxy.getHost(); 2945 port = mGlobalProxy.getPort(); 2946 exclList = mGlobalProxy.getExclusionListAsString(); 2947 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2948 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2949 } 2950 } else { 2951 mGlobalProxy = null; 2952 } 2953 ContentResolver res = mContext.getContentResolver(); 2954 final long token = Binder.clearCallingIdentity(); 2955 try { 2956 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2957 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2958 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2959 exclList); 2960 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2961 } finally { 2962 Binder.restoreCallingIdentity(token); 2963 } 2964 2965 if (mGlobalProxy == null) { 2966 proxyProperties = mDefaultProxy; 2967 } 2968 sendProxyBroadcast(proxyProperties); 2969 } 2970 } 2971 2972 private void loadGlobalProxy() { 2973 ContentResolver res = mContext.getContentResolver(); 2974 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2975 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2976 String exclList = Settings.Global.getString(res, 2977 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2978 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2979 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2980 ProxyInfo proxyProperties; 2981 if (!TextUtils.isEmpty(pacFileUrl)) { 2982 proxyProperties = new ProxyInfo(pacFileUrl); 2983 } else { 2984 proxyProperties = new ProxyInfo(host, port, exclList); 2985 } 2986 if (!proxyProperties.isValid()) { 2987 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2988 return; 2989 } 2990 2991 synchronized (mProxyLock) { 2992 mGlobalProxy = proxyProperties; 2993 } 2994 } 2995 } 2996 2997 public ProxyInfo getGlobalProxy() { 2998 // this information is already available as a world read/writable jvm property 2999 // so this API change wouldn't have a benifit. It also breaks the passing 3000 // of proxy info to all the JVMs. 3001 // enforceAccessPermission(); 3002 synchronized (mProxyLock) { 3003 return mGlobalProxy; 3004 } 3005 } 3006 3007 private void handleApplyDefaultProxy(ProxyInfo proxy) { 3008 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3009 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 3010 proxy = null; 3011 } 3012 synchronized (mProxyLock) { 3013 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3014 if (mDefaultProxy == proxy) return; // catches repeated nulls 3015 if (proxy != null && !proxy.isValid()) { 3016 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3017 return; 3018 } 3019 3020 // This call could be coming from the PacManager, containing the port of the local 3021 // proxy. If this new proxy matches the global proxy then copy this proxy to the 3022 // global (to get the correct local port), and send a broadcast. 3023 // TODO: Switch PacManager to have its own message to send back rather than 3024 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 3025 if ((mGlobalProxy != null) && (proxy != null) 3026 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 3027 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 3028 mGlobalProxy = proxy; 3029 sendProxyBroadcast(mGlobalProxy); 3030 return; 3031 } 3032 mDefaultProxy = proxy; 3033 3034 if (mGlobalProxy != null) return; 3035 if (!mDefaultProxyDisabled) { 3036 sendProxyBroadcast(proxy); 3037 } 3038 } 3039 } 3040 3041 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 3042 // This method gets called when any network changes proxy, but the broadcast only ever contains 3043 // the default proxy (even if it hasn't changed). 3044 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 3045 // world where an app might be bound to a non-default network. 3046 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3047 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 3048 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 3049 3050 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 3051 sendProxyBroadcast(getDefaultProxy()); 3052 } 3053 } 3054 3055 private void handleDeprecatedGlobalHttpProxy() { 3056 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3057 Settings.Global.HTTP_PROXY); 3058 if (!TextUtils.isEmpty(proxy)) { 3059 String data[] = proxy.split(":"); 3060 if (data.length == 0) { 3061 return; 3062 } 3063 3064 String proxyHost = data[0]; 3065 int proxyPort = 8080; 3066 if (data.length > 1) { 3067 try { 3068 proxyPort = Integer.parseInt(data[1]); 3069 } catch (NumberFormatException e) { 3070 return; 3071 } 3072 } 3073 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 3074 setGlobalProxy(p); 3075 } 3076 } 3077 3078 private void sendProxyBroadcast(ProxyInfo proxy) { 3079 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 3080 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3081 if (DBG) log("sending Proxy Broadcast for " + proxy); 3082 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3083 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3084 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3085 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3086 final long ident = Binder.clearCallingIdentity(); 3087 try { 3088 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3089 } finally { 3090 Binder.restoreCallingIdentity(ident); 3091 } 3092 } 3093 3094 private static class SettingsObserver extends ContentObserver { 3095 final private HashMap<Uri, Integer> mUriEventMap; 3096 final private Context mContext; 3097 final private Handler mHandler; 3098 3099 SettingsObserver(Context context, Handler handler) { 3100 super(null); 3101 mUriEventMap = new HashMap<Uri, Integer>(); 3102 mContext = context; 3103 mHandler = handler; 3104 } 3105 3106 void observe(Uri uri, int what) { 3107 mUriEventMap.put(uri, what); 3108 final ContentResolver resolver = mContext.getContentResolver(); 3109 resolver.registerContentObserver(uri, false, this); 3110 } 3111 3112 @Override 3113 public void onChange(boolean selfChange) { 3114 Slog.wtf(TAG, "Should never be reached."); 3115 } 3116 3117 @Override 3118 public void onChange(boolean selfChange, Uri uri) { 3119 final Integer what = mUriEventMap.get(uri); 3120 if (what != null) { 3121 mHandler.obtainMessage(what.intValue()).sendToTarget(); 3122 } else { 3123 loge("No matching event to send for URI=" + uri); 3124 } 3125 } 3126 } 3127 3128 private static void log(String s) { 3129 Slog.d(TAG, s); 3130 } 3131 3132 private static void loge(String s) { 3133 Slog.e(TAG, s); 3134 } 3135 3136 private static <T> T checkNotNull(T value, String message) { 3137 if (value == null) { 3138 throw new NullPointerException(message); 3139 } 3140 return value; 3141 } 3142 3143 /** 3144 * Prepare for a VPN application. 3145 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3146 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3147 * 3148 * @param oldPackage Package name of the application which currently controls VPN, which will 3149 * be replaced. If there is no such application, this should should either be 3150 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3151 * @param newPackage Package name of the application which should gain control of VPN, or 3152 * {@code null} to disable. 3153 * @param userId User for whom to prepare the new VPN. 3154 * 3155 * @hide 3156 */ 3157 @Override 3158 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3159 int userId) { 3160 enforceCrossUserPermission(userId); 3161 throwIfLockdownEnabled(); 3162 3163 synchronized(mVpns) { 3164 Vpn vpn = mVpns.get(userId); 3165 if (vpn != null) { 3166 return vpn.prepare(oldPackage, newPackage); 3167 } else { 3168 return false; 3169 } 3170 } 3171 } 3172 3173 /** 3174 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3175 * This method is used by system-privileged apps. 3176 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3177 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3178 * 3179 * @param packageName The package for which authorization state should change. 3180 * @param userId User for whom {@code packageName} is installed. 3181 * @param authorized {@code true} if this app should be able to start a VPN connection without 3182 * explicit user approval, {@code false} if not. 3183 * 3184 * @hide 3185 */ 3186 @Override 3187 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3188 enforceCrossUserPermission(userId); 3189 3190 synchronized(mVpns) { 3191 Vpn vpn = mVpns.get(userId); 3192 if (vpn != null) { 3193 vpn.setPackageAuthorization(packageName, authorized); 3194 } 3195 } 3196 } 3197 3198 /** 3199 * Configure a TUN interface and return its file descriptor. Parameters 3200 * are encoded and opaque to this class. This method is used by VpnBuilder 3201 * and not available in ConnectivityManager. Permissions are checked in 3202 * Vpn class. 3203 * @hide 3204 */ 3205 @Override 3206 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3207 throwIfLockdownEnabled(); 3208 int user = UserHandle.getUserId(Binder.getCallingUid()); 3209 synchronized(mVpns) { 3210 return mVpns.get(user).establish(config); 3211 } 3212 } 3213 3214 /** 3215 * Start legacy VPN, controlling native daemons as needed. Creates a 3216 * secondary thread to perform connection work, returning quickly. 3217 */ 3218 @Override 3219 public void startLegacyVpn(VpnProfile profile) { 3220 throwIfLockdownEnabled(); 3221 final LinkProperties egress = getActiveLinkProperties(); 3222 if (egress == null) { 3223 throw new IllegalStateException("Missing active network connection"); 3224 } 3225 int user = UserHandle.getUserId(Binder.getCallingUid()); 3226 synchronized(mVpns) { 3227 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3228 } 3229 } 3230 3231 /** 3232 * Return the information of the ongoing legacy VPN. This method is used 3233 * by VpnSettings and not available in ConnectivityManager. Permissions 3234 * are checked in Vpn class. 3235 */ 3236 @Override 3237 public LegacyVpnInfo getLegacyVpnInfo(int userId) { 3238 enforceCrossUserPermission(userId); 3239 if (mLockdownEnabled) { 3240 return null; 3241 } 3242 3243 synchronized(mVpns) { 3244 return mVpns.get(userId).getLegacyVpnInfo(); 3245 } 3246 } 3247 3248 /** 3249 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3250 * and not available in ConnectivityManager. 3251 */ 3252 @Override 3253 public VpnInfo[] getAllVpnInfo() { 3254 enforceConnectivityInternalPermission(); 3255 if (mLockdownEnabled) { 3256 return new VpnInfo[0]; 3257 } 3258 3259 synchronized(mVpns) { 3260 List<VpnInfo> infoList = new ArrayList<>(); 3261 for (int i = 0; i < mVpns.size(); i++) { 3262 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3263 if (info != null) { 3264 infoList.add(info); 3265 } 3266 } 3267 return infoList.toArray(new VpnInfo[infoList.size()]); 3268 } 3269 } 3270 3271 /** 3272 * @return VPN information for accounting, or null if we can't retrieve all required 3273 * information, e.g primary underlying iface. 3274 */ 3275 @Nullable 3276 private VpnInfo createVpnInfo(Vpn vpn) { 3277 VpnInfo info = vpn.getVpnInfo(); 3278 if (info == null) { 3279 return null; 3280 } 3281 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3282 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3283 // the underlyingNetworks list. 3284 if (underlyingNetworks == null) { 3285 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3286 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3287 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3288 } 3289 } else if (underlyingNetworks.length > 0) { 3290 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3291 if (linkProperties != null) { 3292 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3293 } 3294 } 3295 return info.primaryUnderlyingIface == null ? null : info; 3296 } 3297 3298 /** 3299 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3300 * VpnDialogs and not available in ConnectivityManager. 3301 * Permissions are checked in Vpn class. 3302 * @hide 3303 */ 3304 @Override 3305 public VpnConfig getVpnConfig(int userId) { 3306 enforceCrossUserPermission(userId); 3307 synchronized(mVpns) { 3308 Vpn vpn = mVpns.get(userId); 3309 if (vpn != null) { 3310 return vpn.getVpnConfig(); 3311 } else { 3312 return null; 3313 } 3314 } 3315 } 3316 3317 @Override 3318 public boolean updateLockdownVpn() { 3319 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3320 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3321 return false; 3322 } 3323 3324 // Tear down existing lockdown if profile was removed 3325 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3326 if (mLockdownEnabled) { 3327 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3328 final VpnProfile profile = VpnProfile.decode( 3329 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3330 if (profile == null) { 3331 Slog.e(TAG, "Lockdown VPN configured invalid profile " + profileName); 3332 setLockdownTracker(null); 3333 return true; 3334 } 3335 int user = UserHandle.getUserId(Binder.getCallingUid()); 3336 synchronized(mVpns) { 3337 Vpn vpn = mVpns.get(user); 3338 if (vpn == null) { 3339 Slog.w(TAG, "VPN for user " + user + " not ready yet. Skipping lockdown"); 3340 return false; 3341 } 3342 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, vpn, profile)); 3343 } 3344 } else { 3345 setLockdownTracker(null); 3346 } 3347 3348 return true; 3349 } 3350 3351 /** 3352 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3353 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3354 */ 3355 private void setLockdownTracker(LockdownVpnTracker tracker) { 3356 // Shutdown any existing tracker 3357 final LockdownVpnTracker existing = mLockdownTracker; 3358 mLockdownTracker = null; 3359 if (existing != null) { 3360 existing.shutdown(); 3361 } 3362 3363 try { 3364 if (tracker != null) { 3365 mNetd.setFirewallEnabled(true); 3366 mNetd.setFirewallInterfaceRule("lo", true); 3367 mLockdownTracker = tracker; 3368 mLockdownTracker.init(); 3369 } else { 3370 mNetd.setFirewallEnabled(false); 3371 } 3372 } catch (RemoteException e) { 3373 // ignored; NMS lives inside system_server 3374 } 3375 } 3376 3377 private void throwIfLockdownEnabled() { 3378 if (mLockdownEnabled) { 3379 throw new IllegalStateException("Unavailable in lockdown mode"); 3380 } 3381 } 3382 3383 /** 3384 * Starts the always-on VPN {@link VpnService} for user {@param userId}, which should perform 3385 * some setup and then call {@code establish()} to connect. 3386 * 3387 * @return {@code true} if the service was started, the service was already connected, or there 3388 * was no always-on VPN to start. {@code false} otherwise. 3389 */ 3390 private boolean startAlwaysOnVpn(int userId) { 3391 final String alwaysOnPackage; 3392 synchronized (mVpns) { 3393 Vpn vpn = mVpns.get(userId); 3394 if (vpn == null) { 3395 // Shouldn't happen as all codepaths that point here should have checked the Vpn 3396 // exists already. 3397 Slog.wtf(TAG, "User " + userId + " has no Vpn configuration"); 3398 return false; 3399 } 3400 alwaysOnPackage = vpn.getAlwaysOnPackage(); 3401 // Skip if there is no service to start. 3402 if (alwaysOnPackage == null) { 3403 return true; 3404 } 3405 // Skip if the service is already established. This isn't bulletproof: it's not bound 3406 // until after establish(), so if it's mid-setup onStartCommand will be sent twice, 3407 // which may restart the connection. 3408 if (vpn.getNetworkInfo().isConnected()) { 3409 return true; 3410 } 3411 } 3412 3413 // Start the VPN service declared in the app's manifest. 3414 Intent serviceIntent = new Intent(VpnConfig.SERVICE_INTERFACE); 3415 serviceIntent.setPackage(alwaysOnPackage); 3416 try { 3417 return mContext.startServiceAsUser(serviceIntent, UserHandle.of(userId)) != null; 3418 } catch (RuntimeException e) { 3419 Slog.w(TAG, "VpnService " + serviceIntent + " failed to start", e); 3420 return false; 3421 } 3422 } 3423 3424 @Override 3425 public boolean setAlwaysOnVpnPackage(int userId, String packageName, boolean lockdown) { 3426 enforceConnectivityInternalPermission(); 3427 enforceCrossUserPermission(userId); 3428 3429 // Can't set always-on VPN if legacy VPN is already in lockdown mode. 3430 if (LockdownVpnTracker.isEnabled()) { 3431 return false; 3432 } 3433 3434 synchronized (mVpns) { 3435 Vpn vpn = mVpns.get(userId); 3436 if (vpn == null) { 3437 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3438 return false; 3439 } 3440 // If the current VPN package is the same as the new one, this is a no-op 3441 if (TextUtils.equals(packageName, vpn.getAlwaysOnPackage())) { 3442 return true; 3443 } 3444 if (!vpn.setAlwaysOnPackage(packageName, lockdown)) { 3445 return false; 3446 } 3447 if (!startAlwaysOnVpn(userId)) { 3448 vpn.setAlwaysOnPackage(null, false); 3449 return false; 3450 } 3451 3452 // Save the configuration 3453 final long token = Binder.clearCallingIdentity(); 3454 try { 3455 final ContentResolver cr = mContext.getContentResolver(); 3456 Settings.Secure.putStringForUser(cr, Settings.Secure.ALWAYS_ON_VPN_APP, 3457 packageName, userId); 3458 Settings.Secure.putIntForUser(cr, Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN, 3459 (lockdown ? 1 : 0), userId); 3460 } finally { 3461 Binder.restoreCallingIdentity(token); 3462 } 3463 } 3464 return true; 3465 } 3466 3467 @Override 3468 public String getAlwaysOnVpnPackage(int userId) { 3469 enforceConnectivityInternalPermission(); 3470 enforceCrossUserPermission(userId); 3471 3472 synchronized (mVpns) { 3473 Vpn vpn = mVpns.get(userId); 3474 if (vpn == null) { 3475 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3476 return null; 3477 } 3478 return vpn.getAlwaysOnPackage(); 3479 } 3480 } 3481 3482 @Override 3483 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3484 // TODO: Remove? Any reason to trigger a provisioning check? 3485 return -1; 3486 } 3487 3488 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3489 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3490 3491 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3492 Intent intent = new Intent(action); 3493 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3494 // Concatenate the range of types onto the range of NetIDs. 3495 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3496 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3497 networkType, null, pendingIntent, false); 3498 } 3499 3500 /** 3501 * Show or hide network provisioning notifications. 3502 * 3503 * We use notifications for two purposes: to notify that a network requires sign in 3504 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3505 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3506 * particular network we can display the notification type that was most recently requested. 3507 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3508 * might first display NO_INTERNET, and then when the captive portal check completes, display 3509 * SIGN_IN. 3510 * 3511 * @param id an identifier that uniquely identifies this notification. This must match 3512 * between show and hide calls. We use the NetID value but for legacy callers 3513 * we concatenate the range of types with the range of NetIDs. 3514 */ 3515 private void setProvNotificationVisibleIntent(boolean visible, int id, 3516 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent, 3517 boolean highPriority) { 3518 if (VDBG || (DBG && visible)) { 3519 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3520 + " networkType=" + getNetworkTypeName(networkType) 3521 + " extraInfo=" + extraInfo + " highPriority=" + highPriority); 3522 } 3523 3524 Resources r = Resources.getSystem(); 3525 NotificationManager notificationManager = (NotificationManager) mContext 3526 .getSystemService(Context.NOTIFICATION_SERVICE); 3527 3528 if (visible) { 3529 CharSequence title; 3530 CharSequence details; 3531 int icon; 3532 if (notifyType == NotificationType.NO_INTERNET && 3533 networkType == ConnectivityManager.TYPE_WIFI) { 3534 title = r.getString(R.string.wifi_no_internet, 0); 3535 details = r.getString(R.string.wifi_no_internet_detailed); 3536 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3537 } else if (notifyType == NotificationType.SIGN_IN) { 3538 switch (networkType) { 3539 case ConnectivityManager.TYPE_WIFI: 3540 title = r.getString(R.string.wifi_available_sign_in, 0); 3541 details = r.getString(R.string.network_available_sign_in_detailed, 3542 extraInfo); 3543 icon = R.drawable.stat_notify_wifi_in_range; 3544 break; 3545 case ConnectivityManager.TYPE_MOBILE: 3546 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3547 title = r.getString(R.string.network_available_sign_in, 0); 3548 // TODO: Change this to pull from NetworkInfo once a printable 3549 // name has been added to it 3550 details = mTelephonyManager.getNetworkOperatorName(); 3551 icon = R.drawable.stat_notify_rssi_in_range; 3552 break; 3553 default: 3554 title = r.getString(R.string.network_available_sign_in, 0); 3555 details = r.getString(R.string.network_available_sign_in_detailed, 3556 extraInfo); 3557 icon = R.drawable.stat_notify_rssi_in_range; 3558 break; 3559 } 3560 } else { 3561 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3562 + getNetworkTypeName(networkType)); 3563 return; 3564 } 3565 3566 Notification notification = new Notification.Builder(mContext) 3567 .setWhen(0) 3568 .setSmallIcon(icon) 3569 .setAutoCancel(true) 3570 .setTicker(title) 3571 .setColor(mContext.getColor( 3572 com.android.internal.R.color.system_notification_accent_color)) 3573 .setContentTitle(title) 3574 .setContentText(details) 3575 .setContentIntent(intent) 3576 .setLocalOnly(true) 3577 .setPriority(highPriority ? 3578 Notification.PRIORITY_HIGH : 3579 Notification.PRIORITY_DEFAULT) 3580 .setDefaults(highPriority ? Notification.DEFAULT_ALL : 0) 3581 .setOnlyAlertOnce(true) 3582 .build(); 3583 3584 try { 3585 notificationManager.notify(NOTIFICATION_ID, id, notification); 3586 } catch (NullPointerException npe) { 3587 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3588 npe.printStackTrace(); 3589 } 3590 } else { 3591 try { 3592 notificationManager.cancel(NOTIFICATION_ID, id); 3593 } catch (NullPointerException npe) { 3594 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3595 npe.printStackTrace(); 3596 } 3597 } 3598 } 3599 3600 /** Location to an updatable file listing carrier provisioning urls. 3601 * An example: 3602 * 3603 * <?xml version="1.0" encoding="utf-8"?> 3604 * <provisioningUrls> 3605 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3606 * </provisioningUrls> 3607 */ 3608 private static final String PROVISIONING_URL_PATH = 3609 "/data/misc/radio/provisioning_urls.xml"; 3610 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3611 3612 /** XML tag for root element. */ 3613 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3614 /** XML tag for individual url */ 3615 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3616 /** XML attribute for mcc */ 3617 private static final String ATTR_MCC = "mcc"; 3618 /** XML attribute for mnc */ 3619 private static final String ATTR_MNC = "mnc"; 3620 3621 private String getProvisioningUrlBaseFromFile() { 3622 FileReader fileReader = null; 3623 XmlPullParser parser = null; 3624 Configuration config = mContext.getResources().getConfiguration(); 3625 3626 try { 3627 fileReader = new FileReader(mProvisioningUrlFile); 3628 parser = Xml.newPullParser(); 3629 parser.setInput(fileReader); 3630 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3631 3632 while (true) { 3633 XmlUtils.nextElement(parser); 3634 3635 String element = parser.getName(); 3636 if (element == null) break; 3637 3638 if (element.equals(TAG_PROVISIONING_URL)) { 3639 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3640 try { 3641 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3642 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3643 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3644 parser.next(); 3645 if (parser.getEventType() == XmlPullParser.TEXT) { 3646 return parser.getText(); 3647 } 3648 } 3649 } 3650 } catch (NumberFormatException e) { 3651 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3652 } 3653 } 3654 } 3655 return null; 3656 } catch (FileNotFoundException e) { 3657 loge("Carrier Provisioning Urls file not found"); 3658 } catch (XmlPullParserException e) { 3659 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3660 } catch (IOException e) { 3661 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3662 } finally { 3663 if (fileReader != null) { 3664 try { 3665 fileReader.close(); 3666 } catch (IOException e) {} 3667 } 3668 } 3669 return null; 3670 } 3671 3672 @Override 3673 public String getMobileProvisioningUrl() { 3674 enforceConnectivityInternalPermission(); 3675 String url = getProvisioningUrlBaseFromFile(); 3676 if (TextUtils.isEmpty(url)) { 3677 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3678 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3679 } else { 3680 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3681 } 3682 // populate the iccid, imei and phone number in the provisioning url. 3683 if (!TextUtils.isEmpty(url)) { 3684 String phoneNumber = mTelephonyManager.getLine1Number(); 3685 if (TextUtils.isEmpty(phoneNumber)) { 3686 phoneNumber = "0000000000"; 3687 } 3688 url = String.format(url, 3689 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3690 mTelephonyManager.getDeviceId() /* IMEI */, 3691 phoneNumber /* Phone numer */); 3692 } 3693 3694 return url; 3695 } 3696 3697 @Override 3698 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3699 String action) { 3700 enforceConnectivityInternalPermission(); 3701 final long ident = Binder.clearCallingIdentity(); 3702 try { 3703 setProvNotificationVisible(visible, networkType, action); 3704 } finally { 3705 Binder.restoreCallingIdentity(ident); 3706 } 3707 } 3708 3709 @Override 3710 public void setAirplaneMode(boolean enable) { 3711 enforceConnectivityInternalPermission(); 3712 final long ident = Binder.clearCallingIdentity(); 3713 try { 3714 final ContentResolver cr = mContext.getContentResolver(); 3715 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3716 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3717 intent.putExtra("state", enable); 3718 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3719 } finally { 3720 Binder.restoreCallingIdentity(ident); 3721 } 3722 } 3723 3724 private void onUserStart(int userId) { 3725 synchronized(mVpns) { 3726 Vpn userVpn = mVpns.get(userId); 3727 if (userVpn != null) { 3728 loge("Starting user already has a VPN"); 3729 return; 3730 } 3731 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3732 mVpns.put(userId, userVpn); 3733 3734 final ContentResolver cr = mContext.getContentResolver(); 3735 String alwaysOnPackage = Settings.Secure.getStringForUser(cr, 3736 Settings.Secure.ALWAYS_ON_VPN_APP, userId); 3737 final boolean alwaysOnLockdown = Settings.Secure.getIntForUser(cr, 3738 Settings.Secure.ALWAYS_ON_VPN_LOCKDOWN, /* default */ 0, userId) != 0; 3739 if (alwaysOnPackage != null) { 3740 userVpn.setAlwaysOnPackage(alwaysOnPackage, alwaysOnLockdown); 3741 } 3742 } 3743 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3744 updateLockdownVpn(); 3745 } 3746 } 3747 3748 private void onUserStop(int userId) { 3749 synchronized(mVpns) { 3750 Vpn userVpn = mVpns.get(userId); 3751 if (userVpn == null) { 3752 loge("Stopped user has no VPN"); 3753 return; 3754 } 3755 userVpn.onUserStopped(); 3756 mVpns.delete(userId); 3757 } 3758 } 3759 3760 private void onUserAdded(int userId) { 3761 synchronized(mVpns) { 3762 final int vpnsSize = mVpns.size(); 3763 for (int i = 0; i < vpnsSize; i++) { 3764 Vpn vpn = mVpns.valueAt(i); 3765 vpn.onUserAdded(userId); 3766 } 3767 } 3768 } 3769 3770 private void onUserRemoved(int userId) { 3771 synchronized(mVpns) { 3772 final int vpnsSize = mVpns.size(); 3773 for (int i = 0; i < vpnsSize; i++) { 3774 Vpn vpn = mVpns.valueAt(i); 3775 vpn.onUserRemoved(userId); 3776 } 3777 } 3778 } 3779 3780 private void onUserUnlocked(int userId) { 3781 // User present may be sent because of an unlock, which might mean an unlocked keystore. 3782 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3783 updateLockdownVpn(); 3784 } else { 3785 startAlwaysOnVpn(userId); 3786 } 3787 } 3788 3789 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3790 @Override 3791 public void onReceive(Context context, Intent intent) { 3792 final String action = intent.getAction(); 3793 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3794 if (userId == UserHandle.USER_NULL) return; 3795 3796 if (Intent.ACTION_USER_STARTED.equals(action)) { 3797 onUserStart(userId); 3798 } else if (Intent.ACTION_USER_STOPPED.equals(action)) { 3799 onUserStop(userId); 3800 } else if (Intent.ACTION_USER_ADDED.equals(action)) { 3801 onUserAdded(userId); 3802 } else if (Intent.ACTION_USER_REMOVED.equals(action)) { 3803 onUserRemoved(userId); 3804 } else if (Intent.ACTION_USER_UNLOCKED.equals(action)) { 3805 onUserUnlocked(userId); 3806 } 3807 } 3808 }; 3809 3810 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3811 new HashMap<Messenger, NetworkFactoryInfo>(); 3812 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3813 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3814 3815 private static final int MAX_NETWORK_REQUESTS_PER_UID = 100; 3816 // Map from UID to number of NetworkRequests that UID has filed. 3817 @GuardedBy("mUidToNetworkRequestCount") 3818 private final SparseIntArray mUidToNetworkRequestCount = new SparseIntArray(); 3819 3820 private static class NetworkFactoryInfo { 3821 public final String name; 3822 public final Messenger messenger; 3823 public final AsyncChannel asyncChannel; 3824 3825 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3826 this.name = name; 3827 this.messenger = messenger; 3828 this.asyncChannel = asyncChannel; 3829 } 3830 } 3831 3832 /** 3833 * A NetworkRequest as registered by an application can be one of three 3834 * types: 3835 * 3836 * - "listen", for which the framework will issue callbacks about any 3837 * and all networks that match the specified NetworkCapabilities, 3838 * 3839 * - "request", capable of causing a specific network to be created 3840 * first (e.g. a telephony DUN request), the framework will issue 3841 * callbacks about the single, highest scoring current network 3842 * (if any) that matches the specified NetworkCapabilities, or 3843 * 3844 * - "track the default network", a hybrid of the two designed such 3845 * that the framework will issue callbacks for the single, highest 3846 * scoring current network (if any) that matches the capabilities of 3847 * the default Internet request (mDefaultRequest), but which cannot 3848 * cause the framework to either create or retain the existence of 3849 * any specific network. 3850 * 3851 */ 3852 private static enum NetworkRequestType { 3853 LISTEN, 3854 TRACK_DEFAULT, 3855 REQUEST 3856 }; 3857 3858 /** 3859 * Tracks info about the requester. 3860 * Also used to notice when the calling process dies so we can self-expire 3861 */ 3862 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3863 final NetworkRequest request; 3864 final PendingIntent mPendingIntent; 3865 boolean mPendingIntentSent; 3866 private final IBinder mBinder; 3867 final int mPid; 3868 final int mUid; 3869 final Messenger messenger; 3870 private final NetworkRequestType mType; 3871 3872 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, NetworkRequestType type) { 3873 request = r; 3874 mPendingIntent = pi; 3875 messenger = null; 3876 mBinder = null; 3877 mPid = getCallingPid(); 3878 mUid = getCallingUid(); 3879 mType = type; 3880 enforceRequestCountLimit(); 3881 } 3882 3883 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, NetworkRequestType type) { 3884 super(); 3885 messenger = m; 3886 request = r; 3887 mBinder = binder; 3888 mPid = getCallingPid(); 3889 mUid = getCallingUid(); 3890 mType = type; 3891 mPendingIntent = null; 3892 enforceRequestCountLimit(); 3893 3894 try { 3895 mBinder.linkToDeath(this, 0); 3896 } catch (RemoteException e) { 3897 binderDied(); 3898 } 3899 } 3900 3901 private void enforceRequestCountLimit() { 3902 synchronized (mUidToNetworkRequestCount) { 3903 int networkRequests = mUidToNetworkRequestCount.get(mUid, 0) + 1; 3904 if (networkRequests >= MAX_NETWORK_REQUESTS_PER_UID) { 3905 throw new IllegalArgumentException("Too many NetworkRequests filed"); 3906 } 3907 mUidToNetworkRequestCount.put(mUid, networkRequests); 3908 } 3909 } 3910 3911 private String typeString() { 3912 switch (mType) { 3913 case LISTEN: return "Listen"; 3914 case REQUEST: return "Request"; 3915 case TRACK_DEFAULT: return "Track default"; 3916 default: 3917 return "unknown type"; 3918 } 3919 } 3920 3921 void unlinkDeathRecipient() { 3922 if (mBinder != null) { 3923 mBinder.unlinkToDeath(this, 0); 3924 } 3925 } 3926 3927 public void binderDied() { 3928 log("ConnectivityService NetworkRequestInfo binderDied(" + 3929 request + ", " + mBinder + ")"); 3930 releaseNetworkRequest(request); 3931 } 3932 3933 /** 3934 * Returns true iff. the contained NetworkRequest is one that: 3935 * 3936 * - should be associated with at most one satisfying network 3937 * at a time; 3938 * 3939 * - should cause a network to be kept up if it is the only network 3940 * which can satisfy the NetworkReqeust. 3941 * 3942 * For full detail of how isRequest() is used for pairing Networks with 3943 * NetworkRequests read rematchNetworkAndRequests(). 3944 * 3945 * TODO: Rename to something more properly descriptive. 3946 */ 3947 public boolean isRequest() { 3948 return (mType == NetworkRequestType.TRACK_DEFAULT) || 3949 (mType == NetworkRequestType.REQUEST); 3950 } 3951 3952 public String toString() { 3953 return typeString() + 3954 " from uid/pid:" + mUid + "/" + mPid + 3955 " for " + request + 3956 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3957 } 3958 } 3959 3960 private void ensureRequestableCapabilities(NetworkCapabilities networkCapabilities) { 3961 final String badCapability = networkCapabilities.describeFirstNonRequestableCapability(); 3962 if (badCapability != null) { 3963 throw new IllegalArgumentException("Cannot request network with " + badCapability); 3964 } 3965 } 3966 3967 private ArrayList<Integer> getSignalStrengthThresholds(NetworkAgentInfo nai) { 3968 final SortedSet<Integer> thresholds = new TreeSet(); 3969 synchronized (nai) { 3970 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3971 if (nri.request.networkCapabilities.hasSignalStrength() && 3972 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 3973 thresholds.add(nri.request.networkCapabilities.getSignalStrength()); 3974 } 3975 } 3976 } 3977 return new ArrayList<Integer>(thresholds); 3978 } 3979 3980 private void updateSignalStrengthThresholds( 3981 NetworkAgentInfo nai, String reason, NetworkRequest request) { 3982 ArrayList<Integer> thresholdsArray = getSignalStrengthThresholds(nai); 3983 Bundle thresholds = new Bundle(); 3984 thresholds.putIntegerArrayList("thresholds", thresholdsArray); 3985 3986 if (VDBG || (DBG && !"CONNECT".equals(reason))) { 3987 String detail; 3988 if (request != null && request.networkCapabilities.hasSignalStrength()) { 3989 detail = reason + " " + request.networkCapabilities.getSignalStrength(); 3990 } else { 3991 detail = reason; 3992 } 3993 log(String.format("updateSignalStrengthThresholds: %s, sending %s to %s", 3994 detail, Arrays.toString(thresholdsArray.toArray()), nai.name())); 3995 } 3996 3997 nai.asyncChannel.sendMessage( 3998 android.net.NetworkAgent.CMD_SET_SIGNAL_STRENGTH_THRESHOLDS, 3999 0, 0, thresholds); 4000 } 4001 4002 @Override 4003 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 4004 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 4005 final NetworkRequestType type = (networkCapabilities == null) 4006 ? NetworkRequestType.TRACK_DEFAULT 4007 : NetworkRequestType.REQUEST; 4008 // If the requested networkCapabilities is null, take them instead from 4009 // the default network request. This allows callers to keep track of 4010 // the system default network. 4011 if (type == NetworkRequestType.TRACK_DEFAULT) { 4012 networkCapabilities = new NetworkCapabilities(mDefaultRequest.networkCapabilities); 4013 enforceAccessPermission(); 4014 } else { 4015 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4016 enforceNetworkRequestPermissions(networkCapabilities); 4017 } 4018 enforceMeteredApnPolicy(networkCapabilities); 4019 ensureRequestableCapabilities(networkCapabilities); 4020 4021 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 4022 throw new IllegalArgumentException("Bad timeout specified"); 4023 } 4024 4025 if (NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER 4026 .equals(networkCapabilities.getNetworkSpecifier())) { 4027 throw new IllegalArgumentException("Invalid network specifier - must not be '" 4028 + NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER + "'"); 4029 } 4030 4031 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 4032 nextNetworkRequestId()); 4033 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, type); 4034 if (DBG) log("requestNetwork for " + nri); 4035 4036 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 4037 if (timeoutMs > 0) { 4038 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 4039 nri), timeoutMs); 4040 } 4041 return networkRequest; 4042 } 4043 4044 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 4045 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 4046 enforceConnectivityInternalPermission(); 4047 } else { 4048 enforceChangePermission(); 4049 } 4050 } 4051 4052 @Override 4053 public boolean requestBandwidthUpdate(Network network) { 4054 enforceAccessPermission(); 4055 NetworkAgentInfo nai = null; 4056 if (network == null) { 4057 return false; 4058 } 4059 synchronized (mNetworkForNetId) { 4060 nai = mNetworkForNetId.get(network.netId); 4061 } 4062 if (nai != null) { 4063 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 4064 return true; 4065 } 4066 return false; 4067 } 4068 4069 4070 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 4071 // if UID is restricted, don't allow them to bring up metered APNs 4072 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 4073 final int uidRules; 4074 final int uid = Binder.getCallingUid(); 4075 synchronized(mRulesLock) { 4076 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 4077 } 4078 if ((uidRules & RULE_ALLOW_ALL) == 0) { 4079 // we could silently fail or we can filter the available nets to only give 4080 // them those they have access to. Chose the more useful option. 4081 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 4082 } 4083 } 4084 } 4085 4086 @Override 4087 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 4088 PendingIntent operation) { 4089 checkNotNull(operation, "PendingIntent cannot be null."); 4090 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4091 enforceNetworkRequestPermissions(networkCapabilities); 4092 enforceMeteredApnPolicy(networkCapabilities); 4093 ensureRequestableCapabilities(networkCapabilities); 4094 4095 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 4096 nextNetworkRequestId()); 4097 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 4098 NetworkRequestType.REQUEST); 4099 if (DBG) log("pendingRequest for " + nri); 4100 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 4101 nri)); 4102 return networkRequest; 4103 } 4104 4105 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 4106 mHandler.sendMessageDelayed( 4107 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 4108 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 4109 } 4110 4111 @Override 4112 public void releasePendingNetworkRequest(PendingIntent operation) { 4113 checkNotNull(operation, "PendingIntent cannot be null."); 4114 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 4115 getCallingUid(), 0, operation)); 4116 } 4117 4118 // In order to implement the compatibility measure for pre-M apps that call 4119 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 4120 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 4121 // This ensures it has permission to do so. 4122 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 4123 if (nc == null) { 4124 return false; 4125 } 4126 int[] transportTypes = nc.getTransportTypes(); 4127 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 4128 return false; 4129 } 4130 try { 4131 mContext.enforceCallingOrSelfPermission( 4132 android.Manifest.permission.ACCESS_WIFI_STATE, 4133 "ConnectivityService"); 4134 } catch (SecurityException e) { 4135 return false; 4136 } 4137 return true; 4138 } 4139 4140 @Override 4141 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 4142 Messenger messenger, IBinder binder) { 4143 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 4144 enforceAccessPermission(); 4145 } 4146 4147 NetworkRequest networkRequest = new NetworkRequest( 4148 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 4149 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 4150 NetworkRequestType.LISTEN); 4151 if (VDBG) log("listenForNetwork for " + nri); 4152 4153 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4154 return networkRequest; 4155 } 4156 4157 @Override 4158 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 4159 PendingIntent operation) { 4160 checkNotNull(operation, "PendingIntent cannot be null."); 4161 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 4162 enforceAccessPermission(); 4163 } 4164 4165 NetworkRequest networkRequest = new NetworkRequest( 4166 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 4167 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 4168 NetworkRequestType.LISTEN); 4169 if (VDBG) log("pendingListenForNetwork for " + nri); 4170 4171 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4172 } 4173 4174 @Override 4175 public void releaseNetworkRequest(NetworkRequest networkRequest) { 4176 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 4177 0, networkRequest)); 4178 } 4179 4180 @Override 4181 public void registerNetworkFactory(Messenger messenger, String name) { 4182 enforceConnectivityInternalPermission(); 4183 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 4184 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 4185 } 4186 4187 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 4188 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 4189 mNetworkFactoryInfos.put(nfi.messenger, nfi); 4190 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 4191 } 4192 4193 @Override 4194 public void unregisterNetworkFactory(Messenger messenger) { 4195 enforceConnectivityInternalPermission(); 4196 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 4197 } 4198 4199 private void handleUnregisterNetworkFactory(Messenger messenger) { 4200 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 4201 if (nfi == null) { 4202 loge("Failed to find Messenger in unregisterNetworkFactory"); 4203 return; 4204 } 4205 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 4206 } 4207 4208 /** 4209 * NetworkAgentInfo supporting a request by requestId. 4210 * These have already been vetted (their Capabilities satisfy the request) 4211 * and the are the highest scored network available. 4212 * the are keyed off the Requests requestId. 4213 */ 4214 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 4215 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 4216 new SparseArray<NetworkAgentInfo>(); 4217 4218 // NOTE: Accessed on multiple threads, must be synchronized on itself. 4219 @GuardedBy("mNetworkForNetId") 4220 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 4221 new SparseArray<NetworkAgentInfo>(); 4222 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 4223 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 4224 // there may not be a strict 1:1 correlation between the two. 4225 @GuardedBy("mNetworkForNetId") 4226 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 4227 4228 // NetworkAgentInfo keyed off its connecting messenger 4229 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 4230 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 4231 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 4232 new HashMap<Messenger, NetworkAgentInfo>(); 4233 4234 @GuardedBy("mBlockedAppUids") 4235 private final HashSet<Integer> mBlockedAppUids = new HashSet(); 4236 4237 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 4238 private final NetworkRequest mDefaultRequest; 4239 4240 // Request used to optionally keep mobile data active even when higher 4241 // priority networks like Wi-Fi are active. 4242 private final NetworkRequest mDefaultMobileDataRequest; 4243 4244 private NetworkAgentInfo getDefaultNetwork() { 4245 return mNetworkForRequestId.get(mDefaultRequest.requestId); 4246 } 4247 4248 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 4249 return nai == getDefaultNetwork(); 4250 } 4251 4252 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 4253 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 4254 int currentScore, NetworkMisc networkMisc) { 4255 enforceConnectivityInternalPermission(); 4256 4257 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 4258 // satisfies mDefaultRequest. 4259 final NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 4260 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 4261 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 4262 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest, this); 4263 synchronized (this) { 4264 nai.networkMonitor.systemReady = mSystemReady; 4265 } 4266 addValidationLogs(nai.networkMonitor.getValidationLogs(), nai.network); 4267 if (DBG) log("registerNetworkAgent " + nai); 4268 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 4269 return nai.network.netId; 4270 } 4271 4272 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 4273 if (VDBG) log("Got NetworkAgent Messenger"); 4274 mNetworkAgentInfos.put(na.messenger, na); 4275 synchronized (mNetworkForNetId) { 4276 mNetworkForNetId.put(na.network.netId, na); 4277 } 4278 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 4279 NetworkInfo networkInfo = na.networkInfo; 4280 na.networkInfo = null; 4281 updateNetworkInfo(na, networkInfo); 4282 } 4283 4284 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 4285 LinkProperties newLp = networkAgent.linkProperties; 4286 int netId = networkAgent.network.netId; 4287 4288 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 4289 // we do anything else, make sure its LinkProperties are accurate. 4290 if (networkAgent.clatd != null) { 4291 networkAgent.clatd.fixupLinkProperties(oldLp); 4292 } 4293 4294 updateInterfaces(newLp, oldLp, netId); 4295 updateMtu(newLp, oldLp); 4296 // TODO - figure out what to do for clat 4297// for (LinkProperties lp : newLp.getStackedLinks()) { 4298// updateMtu(lp, null); 4299// } 4300 updateTcpBufferSizes(networkAgent); 4301 4302 updateRoutes(newLp, oldLp, netId); 4303 updateDnses(newLp, oldLp, netId); 4304 4305 updateClat(newLp, oldLp, networkAgent); 4306 if (isDefaultNetwork(networkAgent)) { 4307 handleApplyDefaultProxy(newLp.getHttpProxy()); 4308 } else { 4309 updateProxy(newLp, oldLp, networkAgent); 4310 } 4311 // TODO - move this check to cover the whole function 4312 if (!Objects.equals(newLp, oldLp)) { 4313 notifyIfacesChangedForNetworkStats(); 4314 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 4315 } 4316 4317 mKeepaliveTracker.handleCheckKeepalivesStillValid(networkAgent); 4318 } 4319 4320 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 4321 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 4322 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 4323 4324 if (!wasRunningClat && shouldRunClat) { 4325 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 4326 nai.clatd.start(); 4327 } else if (wasRunningClat && !shouldRunClat) { 4328 nai.clatd.stop(); 4329 } 4330 } 4331 4332 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 4333 CompareResult<String> interfaceDiff = new CompareResult<String>(); 4334 if (oldLp != null) { 4335 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 4336 } else if (newLp != null) { 4337 interfaceDiff.added = newLp.getAllInterfaceNames(); 4338 } 4339 for (String iface : interfaceDiff.added) { 4340 try { 4341 if (DBG) log("Adding iface " + iface + " to network " + netId); 4342 mNetd.addInterfaceToNetwork(iface, netId); 4343 } catch (Exception e) { 4344 loge("Exception adding interface: " + e); 4345 } 4346 } 4347 for (String iface : interfaceDiff.removed) { 4348 try { 4349 if (DBG) log("Removing iface " + iface + " from network " + netId); 4350 mNetd.removeInterfaceFromNetwork(iface, netId); 4351 } catch (Exception e) { 4352 loge("Exception removing interface: " + e); 4353 } 4354 } 4355 } 4356 4357 /** 4358 * Have netd update routes from oldLp to newLp. 4359 * @return true if routes changed between oldLp and newLp 4360 */ 4361 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 4362 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 4363 if (oldLp != null) { 4364 routeDiff = oldLp.compareAllRoutes(newLp); 4365 } else if (newLp != null) { 4366 routeDiff.added = newLp.getAllRoutes(); 4367 } 4368 4369 // add routes before removing old in case it helps with continuous connectivity 4370 4371 // do this twice, adding non-nexthop routes first, then routes they are dependent on 4372 for (RouteInfo route : routeDiff.added) { 4373 if (route.hasGateway()) continue; 4374 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4375 try { 4376 mNetd.addRoute(netId, route); 4377 } catch (Exception e) { 4378 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 4379 loge("Exception in addRoute for non-gateway: " + e); 4380 } 4381 } 4382 } 4383 for (RouteInfo route : routeDiff.added) { 4384 if (route.hasGateway() == false) continue; 4385 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4386 try { 4387 mNetd.addRoute(netId, route); 4388 } catch (Exception e) { 4389 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4390 loge("Exception in addRoute for gateway: " + e); 4391 } 4392 } 4393 } 4394 4395 for (RouteInfo route : routeDiff.removed) { 4396 if (VDBG) log("Removing Route [" + route + "] from network " + netId); 4397 try { 4398 mNetd.removeRoute(netId, route); 4399 } catch (Exception e) { 4400 loge("Exception in removeRoute: " + e); 4401 } 4402 } 4403 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4404 } 4405 4406 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId) { 4407 if (oldLp != null && newLp.isIdenticalDnses(oldLp)) { 4408 return; // no updating necessary 4409 } 4410 4411 Collection<InetAddress> dnses = newLp.getDnsServers(); 4412 if (DBG) log("Setting DNS servers for network " + netId + " to " + dnses); 4413 try { 4414 mNetd.setDnsConfigurationForNetwork( 4415 netId, NetworkUtils.makeStrings(dnses), newLp.getDomains()); 4416 } catch (Exception e) { 4417 loge("Exception in setDnsConfigurationForNetwork: " + e); 4418 } 4419 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 4420 if (defaultNai != null && defaultNai.network.netId == netId) { 4421 setDefaultDnsSystemProperties(dnses); 4422 } 4423 flushVmDnsCache(); 4424 } 4425 4426 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4427 int last = 0; 4428 for (InetAddress dns : dnses) { 4429 ++last; 4430 String key = "net.dns" + last; 4431 String value = dns.getHostAddress(); 4432 SystemProperties.set(key, value); 4433 } 4434 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4435 String key = "net.dns" + i; 4436 SystemProperties.set(key, ""); 4437 } 4438 mNumDnsEntries = last; 4439 } 4440 4441 /** 4442 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 4443 * augmented with any stateful capabilities implied from {@code networkAgent} 4444 * (e.g., validated status and captive portal status). 4445 * 4446 * @param nai the network having its capabilities updated. 4447 * @param networkCapabilities the new network capabilities. 4448 */ 4449 private void updateCapabilities(NetworkAgentInfo nai, NetworkCapabilities networkCapabilities) { 4450 // Don't modify caller's NetworkCapabilities. 4451 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4452 if (nai.lastValidated) { 4453 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4454 } else { 4455 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4456 } 4457 if (nai.lastCaptivePortalDetected) { 4458 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4459 } else { 4460 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4461 } 4462 if (!Objects.equals(nai.networkCapabilities, networkCapabilities)) { 4463 final int oldScore = nai.getCurrentScore(); 4464 if (nai.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) != 4465 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED)) { 4466 try { 4467 mNetd.setNetworkPermission(nai.network.netId, 4468 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) ? 4469 null : NetworkManagementService.PERMISSION_SYSTEM); 4470 } catch (RemoteException e) { 4471 loge("Exception in setNetworkPermission: " + e); 4472 } 4473 } 4474 synchronized (nai) { 4475 nai.networkCapabilities = networkCapabilities; 4476 } 4477 rematchAllNetworksAndRequests(nai, oldScore); 4478 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 4479 } 4480 } 4481 4482 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4483 for (int i = 0; i < nai.networkRequests.size(); i++) { 4484 NetworkRequest nr = nai.networkRequests.valueAt(i); 4485 // Don't send listening requests to factories. b/17393458 4486 if (!isRequest(nr)) continue; 4487 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4488 } 4489 } 4490 4491 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4492 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4493 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4494 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4495 networkRequest); 4496 } 4497 } 4498 4499 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4500 int notificationType) { 4501 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4502 Intent intent = new Intent(); 4503 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4504 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4505 nri.mPendingIntentSent = true; 4506 sendIntent(nri.mPendingIntent, intent); 4507 } 4508 // else not handled 4509 } 4510 4511 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4512 mPendingIntentWakeLock.acquire(); 4513 try { 4514 if (DBG) log("Sending " + pendingIntent); 4515 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4516 } catch (PendingIntent.CanceledException e) { 4517 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4518 mPendingIntentWakeLock.release(); 4519 releasePendingNetworkRequest(pendingIntent); 4520 } 4521 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4522 } 4523 4524 @Override 4525 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4526 String resultData, Bundle resultExtras) { 4527 if (DBG) log("Finished sending " + pendingIntent); 4528 mPendingIntentWakeLock.release(); 4529 // Release with a delay so the receiving client has an opportunity to put in its 4530 // own request. 4531 releasePendingNetworkRequestWithDelay(pendingIntent); 4532 } 4533 4534 private void callCallbackForRequest(NetworkRequestInfo nri, 4535 NetworkAgentInfo networkAgent, int notificationType) { 4536 if (nri.messenger == null) return; // Default request has no msgr 4537 Bundle bundle = new Bundle(); 4538 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4539 new NetworkRequest(nri.request)); 4540 Message msg = Message.obtain(); 4541 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4542 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4543 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4544 } 4545 switch (notificationType) { 4546 case ConnectivityManager.CALLBACK_LOSING: { 4547 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4548 break; 4549 } 4550 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4551 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4552 new NetworkCapabilities(networkAgent.networkCapabilities)); 4553 break; 4554 } 4555 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4556 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4557 new LinkProperties(networkAgent.linkProperties)); 4558 break; 4559 } 4560 } 4561 msg.what = notificationType; 4562 msg.setData(bundle); 4563 try { 4564 if (VDBG) { 4565 log("sending notification " + notifyTypeToName(notificationType) + 4566 " for " + nri.request); 4567 } 4568 nri.messenger.send(msg); 4569 } catch (RemoteException e) { 4570 // may occur naturally in the race of binder death. 4571 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4572 } 4573 } 4574 4575 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4576 for (int i = 0; i < nai.networkRequests.size(); i++) { 4577 NetworkRequest nr = nai.networkRequests.valueAt(i); 4578 // Ignore listening requests. 4579 if (!isRequest(nr)) continue; 4580 loge("Dead network still had at least " + nr); 4581 break; 4582 } 4583 nai.asyncChannel.disconnect(); 4584 } 4585 4586 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4587 if (oldNetwork == null) { 4588 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4589 return; 4590 } 4591 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4592 teardownUnneededNetwork(oldNetwork); 4593 } 4594 4595 private void makeDefault(NetworkAgentInfo newNetwork, NetworkAgentInfo prevNetwork) { 4596 if (DBG) log("Switching to new default network: " + newNetwork); 4597 setupDataActivityTracking(newNetwork); 4598 try { 4599 mNetd.setDefaultNetId(newNetwork.network.netId); 4600 } catch (Exception e) { 4601 loge("Exception setting default network :" + e); 4602 } 4603 notifyLockdownVpn(newNetwork); 4604 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4605 updateTcpBufferSizes(newNetwork); 4606 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4607 logDefaultNetworkEvent(newNetwork, prevNetwork); 4608 } 4609 4610 // Handles a network appearing or improving its score. 4611 // 4612 // - Evaluates all current NetworkRequests that can be 4613 // satisfied by newNetwork, and reassigns to newNetwork 4614 // any such requests for which newNetwork is the best. 4615 // 4616 // - Lingers any validated Networks that as a result are no longer 4617 // needed. A network is needed if it is the best network for 4618 // one or more NetworkRequests, or if it is a VPN. 4619 // 4620 // - Tears down newNetwork if it just became validated 4621 // but turns out to be unneeded. 4622 // 4623 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4624 // networks that have no chance (i.e. even if validated) 4625 // of becoming the highest scoring network. 4626 // 4627 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4628 // it does not remove NetworkRequests that other Networks could better satisfy. 4629 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4630 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4631 // as it performs better by a factor of the number of Networks. 4632 // 4633 // @param newNetwork is the network to be matched against NetworkRequests. 4634 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4635 // performed to tear down unvalidated networks that have no chance (i.e. even if 4636 // validated) of becoming the highest scoring network. 4637 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, 4638 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4639 if (!newNetwork.everConnected) return; 4640 boolean keep = newNetwork.isVPN(); 4641 boolean isNewDefault = false; 4642 NetworkAgentInfo oldDefaultNetwork = null; 4643 if (VDBG) log("rematching " + newNetwork.name()); 4644 // Find and migrate to this Network any NetworkRequests for 4645 // which this network is now the best. 4646 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4647 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4648 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4649 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4650 final NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4651 final boolean satisfies = newNetwork.satisfies(nri.request); 4652 if (newNetwork == currentNetwork && satisfies) { 4653 if (VDBG) { 4654 log("Network " + newNetwork.name() + " was already satisfying" + 4655 " request " + nri.request.requestId + ". No change."); 4656 } 4657 keep = true; 4658 continue; 4659 } 4660 4661 // check if it satisfies the NetworkCapabilities 4662 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4663 if (satisfies) { 4664 if (!nri.isRequest()) { 4665 // This is not a request, it's a callback listener. 4666 // Add it to newNetwork regardless of score. 4667 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4668 continue; 4669 } 4670 4671 // next check if it's better than any current network we're using for 4672 // this request 4673 if (VDBG) { 4674 log("currentScore = " + 4675 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4676 ", newScore = " + newNetwork.getCurrentScore()); 4677 } 4678 if (currentNetwork == null || 4679 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4680 if (VDBG) log("rematch for " + newNetwork.name()); 4681 if (currentNetwork != null) { 4682 if (VDBG) log(" accepting network in place of " + currentNetwork.name()); 4683 currentNetwork.networkRequests.remove(nri.request.requestId); 4684 currentNetwork.networkLingered.add(nri.request); 4685 affectedNetworks.add(currentNetwork); 4686 } else { 4687 if (VDBG) log(" accepting network in place of null"); 4688 } 4689 unlinger(newNetwork); 4690 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4691 if (!newNetwork.addRequest(nri.request)) { 4692 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4693 } 4694 addedRequests.add(nri); 4695 keep = true; 4696 // Tell NetworkFactories about the new score, so they can stop 4697 // trying to connect if they know they cannot match it. 4698 // TODO - this could get expensive if we have alot of requests for this 4699 // network. Think about if there is a way to reduce this. Push 4700 // netid->request mapping to each factory? 4701 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4702 if (mDefaultRequest.requestId == nri.request.requestId) { 4703 isNewDefault = true; 4704 oldDefaultNetwork = currentNetwork; 4705 } 4706 } 4707 } else if (newNetwork.networkRequests.get(nri.request.requestId) != null) { 4708 // If "newNetwork" is listed as satisfying "nri" but no longer satisfies "nri", 4709 // mark it as no longer satisfying "nri". Because networks are processed by 4710 // rematchAllNetworkAndRequests() in descending score order, "currentNetwork" will 4711 // match "newNetwork" before this loop will encounter a "currentNetwork" with higher 4712 // score than "newNetwork" and where "currentNetwork" no longer satisfies "nri". 4713 // This means this code doesn't have to handle the case where "currentNetwork" no 4714 // longer satisfies "nri" when "currentNetwork" does not equal "newNetwork". 4715 if (DBG) { 4716 log("Network " + newNetwork.name() + " stopped satisfying" + 4717 " request " + nri.request.requestId); 4718 } 4719 newNetwork.networkRequests.remove(nri.request.requestId); 4720 if (currentNetwork == newNetwork) { 4721 mNetworkForRequestId.remove(nri.request.requestId); 4722 sendUpdatedScoreToFactories(nri.request, 0); 4723 } else { 4724 if (nri.isRequest()) { 4725 Slog.wtf(TAG, "BUG: Removing request " + nri.request.requestId + " from " + 4726 newNetwork.name() + 4727 " without updating mNetworkForRequestId or factories!"); 4728 } 4729 } 4730 // TODO: technically, sending CALLBACK_LOST here is 4731 // incorrect if nri is a request (not a listen) and there 4732 // is a replacement network currently connected that can 4733 // satisfy it. However, the only capability that can both 4734 // a) be requested and b) change is NET_CAPABILITY_TRUSTED, 4735 // so this code is only incorrect for a network that loses 4736 // the TRUSTED capability, which is a rare case. 4737 callCallbackForRequest(nri, newNetwork, ConnectivityManager.CALLBACK_LOST); 4738 } 4739 } 4740 // Linger any networks that are no longer needed. 4741 for (NetworkAgentInfo nai : affectedNetworks) { 4742 if (nai.lingering) { 4743 // Already lingered. Nothing to do. This can only happen if "nai" is in 4744 // "affectedNetworks" twice. The reasoning being that to get added to 4745 // "affectedNetworks", "nai" must have been satisfying a NetworkRequest 4746 // (i.e. not lingered) so it could have only been lingered by this loop. 4747 // unneeded(nai) will be false and we'll call unlinger() below which would 4748 // be bad, so handle it here. 4749 } else if (unneeded(nai)) { 4750 linger(nai); 4751 } else { 4752 // Clear nai.networkLingered we might have added above. 4753 unlinger(nai); 4754 } 4755 } 4756 if (isNewDefault) { 4757 // Notify system services that this network is up. 4758 makeDefault(newNetwork, oldDefaultNetwork); 4759 synchronized (ConnectivityService.this) { 4760 // have a new default network, release the transition wakelock in 4761 // a second if it's held. The second pause is to allow apps 4762 // to reconnect over the new network 4763 if (mNetTransitionWakeLock.isHeld()) { 4764 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4765 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4766 mNetTransitionWakeLockSerialNumber, 0), 4767 1000); 4768 } 4769 } 4770 } 4771 4772 // do this after the default net is switched, but 4773 // before LegacyTypeTracker sends legacy broadcasts 4774 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4775 4776 if (isNewDefault) { 4777 // Maintain the illusion: since the legacy API only 4778 // understands one network at a time, we must pretend 4779 // that the current default network disconnected before 4780 // the new one connected. 4781 if (oldDefaultNetwork != null) { 4782 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4783 oldDefaultNetwork, true); 4784 } 4785 mDefaultInetConditionPublished = newNetwork.lastValidated ? 100 : 0; 4786 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4787 notifyLockdownVpn(newNetwork); 4788 } 4789 4790 if (keep) { 4791 // Notify battery stats service about this network, both the normal 4792 // interface and any stacked links. 4793 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4794 try { 4795 final IBatteryStats bs = BatteryStatsService.getService(); 4796 final int type = newNetwork.networkInfo.getType(); 4797 4798 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4799 bs.noteNetworkInterfaceType(baseIface, type); 4800 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4801 final String stackedIface = stacked.getInterfaceName(); 4802 bs.noteNetworkInterfaceType(stackedIface, type); 4803 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4804 } 4805 } catch (RemoteException ignored) { 4806 } 4807 4808 // This has to happen after the notifyNetworkCallbacks as that tickles each 4809 // ConnectivityManager instance so that legacy requests correctly bind dns 4810 // requests to this network. The legacy users are listening for this bcast 4811 // and will generally do a dns request so they can ensureRouteToHost and if 4812 // they do that before the callbacks happen they'll use the default network. 4813 // 4814 // TODO: Is there still a race here? We send the broadcast 4815 // after sending the callback, but if the app can receive the 4816 // broadcast before the callback, it might still break. 4817 // 4818 // This *does* introduce a race where if the user uses the new api 4819 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4820 // they may get old info. Reverse this after the old startUsing api is removed. 4821 // This is on top of the multiple intent sequencing referenced in the todo above. 4822 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4823 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4824 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4825 // legacy type tracker filters out repeat adds 4826 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4827 } 4828 } 4829 4830 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4831 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4832 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4833 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4834 if (newNetwork.isVPN()) { 4835 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4836 } 4837 } 4838 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4839 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4840 if (unneeded(nai)) { 4841 if (DBG) log("Reaping " + nai.name()); 4842 teardownUnneededNetwork(nai); 4843 } 4844 } 4845 } 4846 } 4847 4848 /** 4849 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4850 * being disconnected. 4851 * @param changed If only one Network's score or capabilities have been modified since the last 4852 * time this function was called, pass this Network in this argument, otherwise pass 4853 * null. 4854 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4855 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4856 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4857 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4858 * network's score. 4859 */ 4860 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4861 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4862 // to avoid the slowness. It is not simply enough to process just "changed", for 4863 // example in the case where "changed"'s score decreases and another network should begin 4864 // satifying a NetworkRequest that "changed" currently satisfies. 4865 4866 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4867 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4868 // rematchNetworkAndRequests() handles. 4869 if (changed != null && oldScore < changed.getCurrentScore()) { 4870 rematchNetworkAndRequests(changed, ReapUnvalidatedNetworks.REAP); 4871 } else { 4872 final NetworkAgentInfo[] nais = mNetworkAgentInfos.values().toArray( 4873 new NetworkAgentInfo[mNetworkAgentInfos.size()]); 4874 // Rematch higher scoring networks first to prevent requests first matching a lower 4875 // scoring network and then a higher scoring network, which could produce multiple 4876 // callbacks and inadvertently unlinger networks. 4877 Arrays.sort(nais); 4878 for (NetworkAgentInfo nai : nais) { 4879 rematchNetworkAndRequests(nai, 4880 // Only reap the last time through the loop. Reaping before all rematching 4881 // is complete could incorrectly teardown a network that hasn't yet been 4882 // rematched. 4883 (nai != nais[nais.length-1]) ? ReapUnvalidatedNetworks.DONT_REAP 4884 : ReapUnvalidatedNetworks.REAP); 4885 } 4886 } 4887 } 4888 4889 private void updateInetCondition(NetworkAgentInfo nai) { 4890 // Don't bother updating until we've graduated to validated at least once. 4891 if (!nai.everValidated) return; 4892 // For now only update icons for default connection. 4893 // TODO: Update WiFi and cellular icons separately. b/17237507 4894 if (!isDefaultNetwork(nai)) return; 4895 4896 int newInetCondition = nai.lastValidated ? 100 : 0; 4897 // Don't repeat publish. 4898 if (newInetCondition == mDefaultInetConditionPublished) return; 4899 4900 mDefaultInetConditionPublished = newInetCondition; 4901 sendInetConditionBroadcast(nai.networkInfo); 4902 } 4903 4904 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4905 if (mLockdownTracker != null) { 4906 if (nai != null && nai.isVPN()) { 4907 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4908 } else { 4909 mLockdownTracker.onNetworkInfoChanged(); 4910 } 4911 } 4912 } 4913 4914 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4915 NetworkInfo.State state = newInfo.getState(); 4916 NetworkInfo oldInfo = null; 4917 final int oldScore = networkAgent.getCurrentScore(); 4918 synchronized (networkAgent) { 4919 oldInfo = networkAgent.networkInfo; 4920 networkAgent.networkInfo = newInfo; 4921 } 4922 notifyLockdownVpn(networkAgent); 4923 4924 if (oldInfo != null && oldInfo.getState() == state) { 4925 if (oldInfo.isRoaming() != newInfo.isRoaming()) { 4926 if (VDBG) log("roaming status changed, notifying NetworkStatsService"); 4927 notifyIfacesChangedForNetworkStats(); 4928 } else if (VDBG) log("ignoring duplicate network state non-change"); 4929 // In either case, no further work should be needed. 4930 return; 4931 } 4932 if (DBG) { 4933 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4934 (oldInfo == null ? "null" : oldInfo.getState()) + 4935 " to " + state); 4936 } 4937 4938 if (!networkAgent.created 4939 && (state == NetworkInfo.State.CONNECTED 4940 || (state == NetworkInfo.State.CONNECTING && networkAgent.isVPN()))) { 4941 try { 4942 // This should never fail. Specifying an already in use NetID will cause failure. 4943 if (networkAgent.isVPN()) { 4944 mNetd.createVirtualNetwork(networkAgent.network.netId, 4945 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4946 (networkAgent.networkMisc == null || 4947 !networkAgent.networkMisc.allowBypass)); 4948 } else { 4949 mNetd.createPhysicalNetwork(networkAgent.network.netId, 4950 networkAgent.networkCapabilities.hasCapability( 4951 NET_CAPABILITY_NOT_RESTRICTED) ? 4952 null : NetworkManagementService.PERMISSION_SYSTEM); 4953 } 4954 } catch (Exception e) { 4955 loge("Error creating network " + networkAgent.network.netId + ": " 4956 + e.getMessage()); 4957 return; 4958 } 4959 networkAgent.created = true; 4960 } 4961 4962 if (!networkAgent.everConnected && state == NetworkInfo.State.CONNECTED) { 4963 networkAgent.everConnected = true; 4964 4965 updateLinkProperties(networkAgent, null); 4966 notifyIfacesChangedForNetworkStats(); 4967 4968 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4969 scheduleUnvalidatedPrompt(networkAgent); 4970 4971 if (networkAgent.isVPN()) { 4972 // Temporarily disable the default proxy (not global). 4973 synchronized (mProxyLock) { 4974 if (!mDefaultProxyDisabled) { 4975 mDefaultProxyDisabled = true; 4976 if (mGlobalProxy == null && mDefaultProxy != null) { 4977 sendProxyBroadcast(null); 4978 } 4979 } 4980 } 4981 // TODO: support proxy per network. 4982 } 4983 4984 // Whether a particular NetworkRequest listen should cause signal strength thresholds to 4985 // be communicated to a particular NetworkAgent depends only on the network's immutable, 4986 // capabilities, so it only needs to be done once on initial connect, not every time the 4987 // network's capabilities change. Note that we do this before rematching the network, 4988 // so we could decide to tear it down immediately afterwards. That's fine though - on 4989 // disconnection NetworkAgents should stop any signal strength monitoring they have been 4990 // doing. 4991 updateSignalStrengthThresholds(networkAgent, "CONNECT", null); 4992 4993 // Consider network even though it is not yet validated. 4994 rematchNetworkAndRequests(networkAgent, ReapUnvalidatedNetworks.REAP); 4995 4996 // This has to happen after matching the requests, because callbacks are just requests. 4997 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4998 } else if (state == NetworkInfo.State.DISCONNECTED) { 4999 networkAgent.asyncChannel.disconnect(); 5000 if (networkAgent.isVPN()) { 5001 synchronized (mProxyLock) { 5002 if (mDefaultProxyDisabled) { 5003 mDefaultProxyDisabled = false; 5004 if (mGlobalProxy == null && mDefaultProxy != null) { 5005 sendProxyBroadcast(mDefaultProxy); 5006 } 5007 } 5008 } 5009 } 5010 } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) || 5011 state == NetworkInfo.State.SUSPENDED) { 5012 // going into or coming out of SUSPEND: rescore and notify 5013 if (networkAgent.getCurrentScore() != oldScore) { 5014 rematchAllNetworksAndRequests(networkAgent, oldScore); 5015 } 5016 notifyNetworkCallbacks(networkAgent, (state == NetworkInfo.State.SUSPENDED ? 5017 ConnectivityManager.CALLBACK_SUSPENDED : 5018 ConnectivityManager.CALLBACK_RESUMED)); 5019 mLegacyTypeTracker.update(networkAgent); 5020 } 5021 } 5022 5023 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 5024 if (VDBG) log("updateNetworkScore for " + nai.name() + " to " + score); 5025 if (score < 0) { 5026 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 5027 "). Bumping score to min of 0"); 5028 score = 0; 5029 } 5030 5031 final int oldScore = nai.getCurrentScore(); 5032 nai.setCurrentScore(score); 5033 5034 rematchAllNetworksAndRequests(nai, oldScore); 5035 5036 sendUpdatedScoreToFactories(nai); 5037 } 5038 5039 // notify only this one new request of the current state 5040 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 5041 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 5042 // TODO - read state from monitor to decide what to send. 5043// if (nai.networkMonitor.isLingering()) { 5044// notifyType = NetworkCallbacks.LOSING; 5045// } else if (nai.networkMonitor.isEvaluating()) { 5046// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 5047// } 5048 if (nri.mPendingIntent == null) { 5049 callCallbackForRequest(nri, nai, notifyType); 5050 } else { 5051 sendPendingIntentForRequest(nri, nai, notifyType); 5052 } 5053 } 5054 5055 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, DetailedState state, int type) { 5056 // The NetworkInfo we actually send out has no bearing on the real 5057 // state of affairs. For example, if the default connection is mobile, 5058 // and a request for HIPRI has just gone away, we need to pretend that 5059 // HIPRI has just disconnected. So we need to set the type to HIPRI and 5060 // the state to DISCONNECTED, even though the network is of type MOBILE 5061 // and is still connected. 5062 NetworkInfo info = new NetworkInfo(nai.networkInfo); 5063 info.setType(type); 5064 if (state != DetailedState.DISCONNECTED) { 5065 info.setDetailedState(state, null, info.getExtraInfo()); 5066 sendConnectedBroadcast(info); 5067 } else { 5068 info.setDetailedState(state, info.getReason(), info.getExtraInfo()); 5069 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 5070 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 5071 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 5072 if (info.isFailover()) { 5073 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 5074 nai.networkInfo.setFailover(false); 5075 } 5076 if (info.getReason() != null) { 5077 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 5078 } 5079 if (info.getExtraInfo() != null) { 5080 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 5081 } 5082 NetworkAgentInfo newDefaultAgent = null; 5083 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 5084 newDefaultAgent = getDefaultNetwork(); 5085 if (newDefaultAgent != null) { 5086 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 5087 newDefaultAgent.networkInfo); 5088 } else { 5089 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 5090 } 5091 } 5092 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 5093 mDefaultInetConditionPublished); 5094 sendStickyBroadcast(intent); 5095 if (newDefaultAgent != null) { 5096 sendConnectedBroadcast(newDefaultAgent.networkInfo); 5097 } 5098 } 5099 } 5100 5101 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 5102 if (VDBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 5103 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 5104 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 5105 NetworkRequestInfo nri = mNetworkRequests.get(nr); 5106 if (VDBG) log(" sending notification for " + nr); 5107 if (nri.mPendingIntent == null) { 5108 callCallbackForRequest(nri, networkAgent, notifyType); 5109 } else { 5110 sendPendingIntentForRequest(nri, networkAgent, notifyType); 5111 } 5112 } 5113 } 5114 5115 private String notifyTypeToName(int notifyType) { 5116 switch (notifyType) { 5117 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 5118 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 5119 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 5120 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 5121 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 5122 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 5123 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 5124 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 5125 } 5126 return "UNKNOWN"; 5127 } 5128 5129 /** 5130 * Notify NetworkStatsService that the set of active ifaces has changed, or that one of the 5131 * properties tracked by NetworkStatsService on an active iface has changed. 5132 */ 5133 private void notifyIfacesChangedForNetworkStats() { 5134 try { 5135 mStatsService.forceUpdateIfaces(); 5136 } catch (Exception ignored) { 5137 } 5138 } 5139 5140 @Override 5141 public boolean addVpnAddress(String address, int prefixLength) { 5142 throwIfLockdownEnabled(); 5143 int user = UserHandle.getUserId(Binder.getCallingUid()); 5144 synchronized (mVpns) { 5145 return mVpns.get(user).addAddress(address, prefixLength); 5146 } 5147 } 5148 5149 @Override 5150 public boolean removeVpnAddress(String address, int prefixLength) { 5151 throwIfLockdownEnabled(); 5152 int user = UserHandle.getUserId(Binder.getCallingUid()); 5153 synchronized (mVpns) { 5154 return mVpns.get(user).removeAddress(address, prefixLength); 5155 } 5156 } 5157 5158 @Override 5159 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 5160 throwIfLockdownEnabled(); 5161 int user = UserHandle.getUserId(Binder.getCallingUid()); 5162 boolean success; 5163 synchronized (mVpns) { 5164 success = mVpns.get(user).setUnderlyingNetworks(networks); 5165 } 5166 if (success) { 5167 notifyIfacesChangedForNetworkStats(); 5168 } 5169 return success; 5170 } 5171 5172 @Override 5173 public String getCaptivePortalServerUrl() { 5174 return NetworkMonitor.getCaptivePortalServerUrl(mContext); 5175 } 5176 5177 @Override 5178 public void startNattKeepalive(Network network, int intervalSeconds, Messenger messenger, 5179 IBinder binder, String srcAddr, int srcPort, String dstAddr) { 5180 enforceKeepalivePermission(); 5181 mKeepaliveTracker.startNattKeepalive( 5182 getNetworkAgentInfoForNetwork(network), 5183 intervalSeconds, messenger, binder, 5184 srcAddr, srcPort, dstAddr, ConnectivityManager.PacketKeepalive.NATT_PORT); 5185 } 5186 5187 @Override 5188 public void stopKeepalive(Network network, int slot) { 5189 mHandler.sendMessage(mHandler.obtainMessage( 5190 NetworkAgent.CMD_STOP_PACKET_KEEPALIVE, slot, PacketKeepalive.SUCCESS, network)); 5191 } 5192 5193 @Override 5194 public void factoryReset() { 5195 enforceConnectivityInternalPermission(); 5196 5197 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 5198 return; 5199 } 5200 5201 final int userId = UserHandle.getCallingUserId(); 5202 5203 // Turn airplane mode off 5204 setAirplaneMode(false); 5205 5206 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 5207 // Untether 5208 for (String tether : getTetheredIfaces()) { 5209 untether(tether); 5210 } 5211 } 5212 5213 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 5214 // Turn VPN off 5215 VpnConfig vpnConfig = getVpnConfig(userId); 5216 if (vpnConfig != null) { 5217 if (vpnConfig.legacy) { 5218 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 5219 } else { 5220 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 5221 // in the future without user intervention. 5222 setVpnPackageAuthorization(vpnConfig.user, userId, false); 5223 5224 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 5225 } 5226 } 5227 } 5228 } 5229 5230 @VisibleForTesting 5231 public NetworkMonitor createNetworkMonitor(Context context, Handler handler, 5232 NetworkAgentInfo nai, NetworkRequest defaultRequest) { 5233 return new NetworkMonitor(context, handler, nai, defaultRequest); 5234 } 5235 5236 private static void logDefaultNetworkEvent(NetworkAgentInfo newNai, NetworkAgentInfo prevNai) { 5237 int newNetid = NETID_UNSET; 5238 int prevNetid = NETID_UNSET; 5239 int[] transports = new int[0]; 5240 boolean hadIPv4 = false; 5241 boolean hadIPv6 = false; 5242 5243 if (newNai != null) { 5244 newNetid = newNai.network.netId; 5245 transports = newNai.networkCapabilities.getTransportTypes(); 5246 } 5247 if (prevNai != null) { 5248 prevNetid = prevNai.network.netId; 5249 final LinkProperties lp = prevNai.linkProperties; 5250 hadIPv4 = lp.hasIPv4Address() && lp.hasIPv4DefaultRoute(); 5251 hadIPv6 = lp.hasGlobalIPv6Address() && lp.hasIPv6DefaultRoute(); 5252 } 5253 5254 DefaultNetworkEvent.logEvent(newNetid, transports, prevNetid, hadIPv4, hadIPv6); 5255 } 5256} 5257