ConnectivityService.java revision bd8759bdd102c1991f899bff4a4dd093345c6b52
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_REJECT_ALL; 33import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 34 35import android.annotation.Nullable; 36import android.app.BroadcastOptions; 37import android.app.Notification; 38import android.app.NotificationManager; 39import android.app.PendingIntent; 40import android.content.BroadcastReceiver; 41import android.content.ContentResolver; 42import android.content.Context; 43import android.content.Intent; 44import android.content.IntentFilter; 45import android.content.pm.PackageManager; 46import android.content.res.Configuration; 47import android.content.res.Resources; 48import android.database.ContentObserver; 49import android.net.ConnectivityManager; 50import android.net.ConnectivityManager.PacketKeepalive; 51import android.net.IConnectivityManager; 52import android.net.INetworkManagementEventObserver; 53import android.net.INetworkPolicyListener; 54import android.net.INetworkPolicyManager; 55import android.net.INetworkStatsService; 56import android.net.LinkProperties; 57import android.net.LinkProperties.CompareResult; 58import android.net.Network; 59import android.net.NetworkAgent; 60import android.net.NetworkCapabilities; 61import android.net.NetworkConfig; 62import android.net.NetworkInfo; 63import android.net.NetworkInfo.DetailedState; 64import android.net.NetworkMisc; 65import android.net.NetworkQuotaInfo; 66import android.net.NetworkRequest; 67import android.net.NetworkState; 68import android.net.NetworkUtils; 69import android.net.Proxy; 70import android.net.ProxyInfo; 71import android.net.RouteInfo; 72import android.net.UidRange; 73import android.net.Uri; 74import android.net.metrics.DefaultNetworkEvent; 75import android.net.metrics.NetworkEvent; 76import android.os.Binder; 77import android.os.Build; 78import android.os.Bundle; 79import android.os.FileUtils; 80import android.os.Handler; 81import android.os.HandlerThread; 82import android.os.IBinder; 83import android.os.INetworkManagementService; 84import android.os.Looper; 85import android.os.Message; 86import android.os.Messenger; 87import android.os.ParcelFileDescriptor; 88import android.os.PowerManager; 89import android.os.Process; 90import android.os.RemoteException; 91import android.os.ResultReceiver; 92import android.os.SystemProperties; 93import android.os.UserHandle; 94import android.os.UserManager; 95import android.provider.Settings; 96import android.security.Credentials; 97import android.security.KeyStore; 98import android.telephony.TelephonyManager; 99import android.text.TextUtils; 100import android.util.LocalLog; 101import android.util.LocalLog.ReadOnlyLocalLog; 102import android.util.Pair; 103import android.util.Slog; 104import android.util.SparseArray; 105import android.util.SparseBooleanArray; 106import android.util.SparseIntArray; 107import android.util.Xml; 108 109import com.android.internal.R; 110import com.android.internal.annotations.GuardedBy; 111import com.android.internal.annotations.VisibleForTesting; 112import com.android.internal.app.IBatteryStats; 113import com.android.internal.net.LegacyVpnInfo; 114import com.android.internal.net.NetworkStatsFactory; 115import com.android.internal.net.VpnConfig; 116import com.android.internal.net.VpnInfo; 117import com.android.internal.net.VpnProfile; 118import com.android.internal.util.AsyncChannel; 119import com.android.internal.util.IndentingPrintWriter; 120import com.android.internal.util.MessageUtils; 121import com.android.internal.util.XmlUtils; 122import com.android.server.am.BatteryStatsService; 123import com.android.server.connectivity.DataConnectionStats; 124import com.android.server.connectivity.KeepaliveTracker; 125import com.android.server.connectivity.NetworkDiagnostics; 126import com.android.server.connectivity.Nat464Xlat; 127import com.android.server.connectivity.NetworkAgentInfo; 128import com.android.server.connectivity.NetworkMonitor; 129import com.android.server.connectivity.PacManager; 130import com.android.server.connectivity.PermissionMonitor; 131import com.android.server.connectivity.Tethering; 132import com.android.server.connectivity.Vpn; 133import com.android.server.net.BaseNetworkObserver; 134import com.android.server.net.LockdownVpnTracker; 135import com.google.android.collect.Lists; 136import com.google.android.collect.Sets; 137 138import org.xmlpull.v1.XmlPullParser; 139import org.xmlpull.v1.XmlPullParserException; 140 141import java.io.File; 142import java.io.FileDescriptor; 143import java.io.FileNotFoundException; 144import java.io.FileReader; 145import java.io.IOException; 146import java.io.PrintWriter; 147import java.net.Inet4Address; 148import java.net.InetAddress; 149import java.net.UnknownHostException; 150import java.util.ArrayDeque; 151import java.util.ArrayList; 152import java.util.Arrays; 153import java.util.Collection; 154import java.util.HashMap; 155import java.util.HashSet; 156import java.util.SortedSet; 157import java.util.TreeSet; 158import java.util.List; 159import java.util.Map; 160import java.util.Objects; 161 162/** 163 * @hide 164 */ 165public class ConnectivityService extends IConnectivityManager.Stub 166 implements PendingIntent.OnFinished { 167 private static final String TAG = "ConnectivityService"; 168 169 private static final boolean DBG = true; 170 private static final boolean VDBG = false; 171 172 private static final boolean LOGD_RULES = false; 173 private static final boolean LOGD_BLOCKED_NETWORKINFO = true; 174 175 // TODO: create better separation between radio types and network types 176 177 // how long to wait before switching back to a radio's default network 178 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 179 // system property that can override the above value 180 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 181 "android.telephony.apn-restore"; 182 183 // How long to wait before putting up a "This network doesn't have an Internet connection, 184 // connect anyway?" dialog after the user selects a network that doesn't validate. 185 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 186 187 // How long to delay to removal of a pending intent based request. 188 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 189 private final int mReleasePendingIntentDelayMs; 190 191 private Tethering mTethering; 192 193 private final PermissionMonitor mPermissionMonitor; 194 195 private KeyStore mKeyStore; 196 197 @GuardedBy("mVpns") 198 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 199 200 private boolean mLockdownEnabled; 201 private LockdownVpnTracker mLockdownTracker; 202 203 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 204 private Object mRulesLock = new Object(); 205 /** Currently active network rules by UID. */ 206 private SparseIntArray mUidRules = new SparseIntArray(); 207 /** Set of ifaces that are costly. */ 208 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 209 210 final private Context mContext; 211 private int mNetworkPreference; 212 // 0 is full bad, 100 is full good 213 private int mDefaultInetConditionPublished = 0; 214 215 private int mNumDnsEntries; 216 217 private boolean mTestMode; 218 private static ConnectivityService sServiceInstance; 219 220 private INetworkManagementService mNetd; 221 private INetworkStatsService mStatsService; 222 private INetworkPolicyManager mPolicyManager; 223 224 private String mCurrentTcpBufferSizes; 225 226 private static final int ENABLED = 1; 227 private static final int DISABLED = 0; 228 229 private static final SparseArray<String> sMagicDecoderRing = MessageUtils.findMessageNames( 230 new Class[] { AsyncChannel.class, ConnectivityService.class, NetworkAgent.class }); 231 232 private enum ReapUnvalidatedNetworks { 233 // Tear down networks that have no chance (e.g. even if validated) of becoming 234 // the highest scoring network satisfying a NetworkRequest. This should be passed when 235 // all networks have been rematched against all NetworkRequests. 236 REAP, 237 // Don't reap networks. This should be passed when some networks have not yet been 238 // rematched against all NetworkRequests. 239 DONT_REAP 240 }; 241 242 /** 243 * used internally to change our mobile data enabled flag 244 */ 245 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 246 247 /** 248 * used internally to clear a wakelock when transitioning 249 * from one net to another. Clear happens when we get a new 250 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 251 * after a timeout if no network is found (typically 1 min). 252 */ 253 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 254 255 /** 256 * used internally to reload global proxy settings 257 */ 258 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 259 260 /** 261 * PAC manager has received new port. 262 */ 263 private static final int EVENT_PROXY_HAS_CHANGED = 16; 264 265 /** 266 * used internally when registering NetworkFactories 267 * obj = NetworkFactoryInfo 268 */ 269 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 270 271 /** 272 * used internally when registering NetworkAgents 273 * obj = Messenger 274 */ 275 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 276 277 /** 278 * used to add a network request 279 * includes a NetworkRequestInfo 280 */ 281 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 282 283 /** 284 * indicates a timeout period is over - check if we had a network yet or not 285 * and if not, call the timeout calback (but leave the request live until they 286 * cancel it. 287 * includes a NetworkRequestInfo 288 */ 289 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 290 291 /** 292 * used to add a network listener - no request 293 * includes a NetworkRequestInfo 294 */ 295 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 296 297 /** 298 * used to remove a network request, either a listener or a real request 299 * arg1 = UID of caller 300 * obj = NetworkRequest 301 */ 302 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 303 304 /** 305 * used internally when registering NetworkFactories 306 * obj = Messenger 307 */ 308 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 309 310 /** 311 * used internally to expire a wakelock when transitioning 312 * from one net to another. Expire happens when we fail to find 313 * a new network (typically after 1 minute) - 314 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 315 * a replacement network. 316 */ 317 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 318 319 /** 320 * Used internally to indicate the system is ready. 321 */ 322 private static final int EVENT_SYSTEM_READY = 25; 323 324 /** 325 * used to add a network request with a pending intent 326 * obj = NetworkRequestInfo 327 */ 328 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 329 330 /** 331 * used to remove a pending intent and its associated network request. 332 * arg1 = UID of caller 333 * obj = PendingIntent 334 */ 335 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 336 337 /** 338 * used to specify whether a network should be used even if unvalidated. 339 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 340 * arg2 = whether to remember this choice in the future (1 or 0) 341 * obj = network 342 */ 343 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 344 345 /** 346 * used to ask the user to confirm a connection to an unvalidated network. 347 * obj = network 348 */ 349 private static final int EVENT_PROMPT_UNVALIDATED = 29; 350 351 /** 352 * used internally to (re)configure mobile data always-on settings. 353 */ 354 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 355 356 /** 357 * used to add a network listener with a pending intent 358 * obj = NetworkRequestInfo 359 */ 360 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 361 362 /** Handler thread used for both of the handlers below. */ 363 @VisibleForTesting 364 protected final HandlerThread mHandlerThread; 365 /** Handler used for internal events. */ 366 final private InternalHandler mHandler; 367 /** Handler used for incoming {@link NetworkStateTracker} events. */ 368 final private NetworkStateTrackerHandler mTrackerHandler; 369 370 private boolean mSystemReady; 371 private Intent mInitialBroadcast; 372 373 private PowerManager.WakeLock mNetTransitionWakeLock; 374 private String mNetTransitionWakeLockCausedBy = ""; 375 private int mNetTransitionWakeLockSerialNumber; 376 private int mNetTransitionWakeLockTimeout; 377 private final PowerManager.WakeLock mPendingIntentWakeLock; 378 379 // used in DBG mode to track inet condition reports 380 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 381 private ArrayList mInetLog; 382 383 // track the current default http proxy - tell the world if we get a new one (real change) 384 private volatile ProxyInfo mDefaultProxy = null; 385 private Object mProxyLock = new Object(); 386 private boolean mDefaultProxyDisabled = false; 387 388 // track the global proxy. 389 private ProxyInfo mGlobalProxy = null; 390 391 private PacManager mPacManager = null; 392 393 final private SettingsObserver mSettingsObserver; 394 395 private UserManager mUserManager; 396 397 NetworkConfig[] mNetConfigs; 398 int mNetworksDefined; 399 400 // the set of network types that can only be enabled by system/sig apps 401 List mProtectedNetworks; 402 403 private DataConnectionStats mDataConnectionStats; 404 405 TelephonyManager mTelephonyManager; 406 407 private KeepaliveTracker mKeepaliveTracker; 408 409 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 410 private final static int MIN_NET_ID = 100; // some reserved marks 411 private final static int MAX_NET_ID = 65535; 412 private int mNextNetId = MIN_NET_ID; 413 414 // sequence number of NetworkRequests 415 private int mNextNetworkRequestId = 1; 416 417 // NetworkRequest activity String log entries. 418 private static final int MAX_NETWORK_REQUEST_LOGS = 20; 419 private final LocalLog mNetworkRequestInfoLogs = new LocalLog(MAX_NETWORK_REQUEST_LOGS); 420 421 // Array of <Network,ReadOnlyLocalLogs> tracking network validation and results 422 private static final int MAX_VALIDATION_LOGS = 10; 423 private final ArrayDeque<Pair<Network,ReadOnlyLocalLog>> mValidationLogs = 424 new ArrayDeque<Pair<Network,ReadOnlyLocalLog>>(MAX_VALIDATION_LOGS); 425 426 private void addValidationLogs(ReadOnlyLocalLog log, Network network) { 427 synchronized(mValidationLogs) { 428 while (mValidationLogs.size() >= MAX_VALIDATION_LOGS) { 429 mValidationLogs.removeLast(); 430 } 431 mValidationLogs.addFirst(new Pair(network, log)); 432 } 433 } 434 435 /** 436 * Implements support for the legacy "one network per network type" model. 437 * 438 * We used to have a static array of NetworkStateTrackers, one for each 439 * network type, but that doesn't work any more now that we can have, 440 * for example, more that one wifi network. This class stores all the 441 * NetworkAgentInfo objects that support a given type, but the legacy 442 * API will only see the first one. 443 * 444 * It serves two main purposes: 445 * 446 * 1. Provide information about "the network for a given type" (since this 447 * API only supports one). 448 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 449 * the first network for a given type changes, or if the default network 450 * changes. 451 */ 452 private class LegacyTypeTracker { 453 454 private static final boolean DBG = true; 455 private static final boolean VDBG = false; 456 457 /** 458 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 459 * Each list holds references to all NetworkAgentInfos that are used to 460 * satisfy requests for that network type. 461 * 462 * This array is built out at startup such that an unsupported network 463 * doesn't get an ArrayList instance, making this a tristate: 464 * unsupported, supported but not active and active. 465 * 466 * The actual lists are populated when we scan the network types that 467 * are supported on this device. 468 */ 469 private ArrayList<NetworkAgentInfo> mTypeLists[]; 470 471 public LegacyTypeTracker() { 472 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 473 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 474 } 475 476 public void addSupportedType(int type) { 477 if (mTypeLists[type] != null) { 478 throw new IllegalStateException( 479 "legacy list for type " + type + "already initialized"); 480 } 481 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 482 } 483 484 public boolean isTypeSupported(int type) { 485 return isNetworkTypeValid(type) && mTypeLists[type] != null; 486 } 487 488 public NetworkAgentInfo getNetworkForType(int type) { 489 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 490 return mTypeLists[type].get(0); 491 } else { 492 return null; 493 } 494 } 495 496 private void maybeLogBroadcast(NetworkAgentInfo nai, DetailedState state, int type, 497 boolean isDefaultNetwork) { 498 if (DBG) { 499 log("Sending " + state + 500 " broadcast for type " + type + " " + nai.name() + 501 " isDefaultNetwork=" + isDefaultNetwork); 502 } 503 } 504 505 /** Adds the given network to the specified legacy type list. */ 506 public void add(int type, NetworkAgentInfo nai) { 507 if (!isTypeSupported(type)) { 508 return; // Invalid network type. 509 } 510 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 511 512 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 513 if (list.contains(nai)) { 514 return; 515 } 516 517 list.add(nai); 518 519 // Send a broadcast if this is the first network of its type or if it's the default. 520 final boolean isDefaultNetwork = isDefaultNetwork(nai); 521 if (list.size() == 1 || isDefaultNetwork) { 522 maybeLogBroadcast(nai, DetailedState.CONNECTED, type, isDefaultNetwork); 523 sendLegacyNetworkBroadcast(nai, DetailedState.CONNECTED, type); 524 } 525 } 526 527 /** Removes the given network from the specified legacy type list. */ 528 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 529 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 530 if (list == null || list.isEmpty()) { 531 return; 532 } 533 534 final boolean wasFirstNetwork = list.get(0).equals(nai); 535 536 if (!list.remove(nai)) { 537 return; 538 } 539 540 final DetailedState state = DetailedState.DISCONNECTED; 541 542 if (wasFirstNetwork || wasDefault) { 543 maybeLogBroadcast(nai, state, type, wasDefault); 544 sendLegacyNetworkBroadcast(nai, state, type); 545 } 546 547 if (!list.isEmpty() && wasFirstNetwork) { 548 if (DBG) log("Other network available for type " + type + 549 ", sending connected broadcast"); 550 final NetworkAgentInfo replacement = list.get(0); 551 maybeLogBroadcast(replacement, state, type, isDefaultNetwork(replacement)); 552 sendLegacyNetworkBroadcast(replacement, state, type); 553 } 554 } 555 556 /** Removes the given network from all legacy type lists. */ 557 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 558 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 559 for (int type = 0; type < mTypeLists.length; type++) { 560 remove(type, nai, wasDefault); 561 } 562 } 563 564 // send out another legacy broadcast - currently only used for suspend/unsuspend 565 // toggle 566 public void update(NetworkAgentInfo nai) { 567 final boolean isDefault = isDefaultNetwork(nai); 568 final DetailedState state = nai.networkInfo.getDetailedState(); 569 for (int type = 0; type < mTypeLists.length; type++) { 570 final ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 571 final boolean contains = (list != null && list.contains(nai)); 572 final boolean isFirst = (list != null && list.size() > 0 && nai == list.get(0)); 573 if (isFirst || (contains && isDefault)) { 574 maybeLogBroadcast(nai, state, type, isDefault); 575 sendLegacyNetworkBroadcast(nai, state, type); 576 } 577 } 578 } 579 580 private String naiToString(NetworkAgentInfo nai) { 581 String name = (nai != null) ? nai.name() : "null"; 582 String state = (nai.networkInfo != null) ? 583 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 584 "???/???"; 585 return name + " " + state; 586 } 587 588 public void dump(IndentingPrintWriter pw) { 589 pw.println("mLegacyTypeTracker:"); 590 pw.increaseIndent(); 591 pw.print("Supported types:"); 592 for (int type = 0; type < mTypeLists.length; type++) { 593 if (mTypeLists[type] != null) pw.print(" " + type); 594 } 595 pw.println(); 596 pw.println("Current state:"); 597 pw.increaseIndent(); 598 for (int type = 0; type < mTypeLists.length; type++) { 599 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 600 for (NetworkAgentInfo nai : mTypeLists[type]) { 601 pw.println(type + " " + naiToString(nai)); 602 } 603 } 604 pw.decreaseIndent(); 605 pw.decreaseIndent(); 606 pw.println(); 607 } 608 } 609 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 610 611 @VisibleForTesting 612 protected HandlerThread createHandlerThread() { 613 return new HandlerThread("ConnectivityServiceThread"); 614 } 615 616 public ConnectivityService(Context context, INetworkManagementService netManager, 617 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 618 if (DBG) log("ConnectivityService starting up"); 619 620 mDefaultRequest = createInternetRequestForTransport(-1); 621 NetworkRequestInfo defaultNRI = new NetworkRequestInfo(null, mDefaultRequest, 622 new Binder(), NetworkRequestType.REQUEST); 623 mNetworkRequests.put(mDefaultRequest, defaultNRI); 624 mNetworkRequestInfoLogs.log("REGISTER " + defaultNRI); 625 626 mDefaultMobileDataRequest = createInternetRequestForTransport( 627 NetworkCapabilities.TRANSPORT_CELLULAR); 628 629 mHandlerThread = createHandlerThread(); 630 mHandlerThread.start(); 631 mHandler = new InternalHandler(mHandlerThread.getLooper()); 632 mTrackerHandler = new NetworkStateTrackerHandler(mHandlerThread.getLooper()); 633 634 // setup our unique device name 635 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 636 String id = Settings.Secure.getString(context.getContentResolver(), 637 Settings.Secure.ANDROID_ID); 638 if (id != null && id.length() > 0) { 639 String name = new String("android-").concat(id); 640 SystemProperties.set("net.hostname", name); 641 } 642 } 643 644 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 645 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 646 647 mContext = checkNotNull(context, "missing Context"); 648 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 649 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 650 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 651 mKeyStore = KeyStore.getInstance(); 652 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 653 654 try { 655 mPolicyManager.registerListener(mPolicyListener); 656 } catch (RemoteException e) { 657 // ouch, no rules updates means some processes may never get network 658 loge("unable to register INetworkPolicyListener" + e.toString()); 659 } 660 661 final PowerManager powerManager = (PowerManager) context.getSystemService( 662 Context.POWER_SERVICE); 663 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 664 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 665 com.android.internal.R.integer.config_networkTransitionTimeout); 666 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 667 668 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 669 670 // TODO: What is the "correct" way to do determine if this is a wifi only device? 671 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 672 log("wifiOnly=" + wifiOnly); 673 String[] naStrings = context.getResources().getStringArray( 674 com.android.internal.R.array.networkAttributes); 675 for (String naString : naStrings) { 676 try { 677 NetworkConfig n = new NetworkConfig(naString); 678 if (VDBG) log("naString=" + naString + " config=" + n); 679 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 680 loge("Error in networkAttributes - ignoring attempt to define type " + 681 n.type); 682 continue; 683 } 684 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 685 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 686 n.type); 687 continue; 688 } 689 if (mNetConfigs[n.type] != null) { 690 loge("Error in networkAttributes - ignoring attempt to redefine type " + 691 n.type); 692 continue; 693 } 694 mLegacyTypeTracker.addSupportedType(n.type); 695 696 mNetConfigs[n.type] = n; 697 mNetworksDefined++; 698 } catch(Exception e) { 699 // ignore it - leave the entry null 700 } 701 } 702 703 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 704 if (mNetConfigs[TYPE_VPN] == null) { 705 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 706 // don't need to add TYPE_VPN to mNetConfigs. 707 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 708 mNetworksDefined++; // used only in the log() statement below. 709 } 710 711 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 712 713 mProtectedNetworks = new ArrayList<Integer>(); 714 int[] protectedNetworks = context.getResources().getIntArray( 715 com.android.internal.R.array.config_protectedNetworks); 716 for (int p : protectedNetworks) { 717 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 718 mProtectedNetworks.add(p); 719 } else { 720 if (DBG) loge("Ignoring protectedNetwork " + p); 721 } 722 } 723 724 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 725 && SystemProperties.get("ro.build.type").equals("eng"); 726 727 mTethering = new Tethering(mContext, mNetd, statsService); 728 729 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 730 731 //set up the listener for user state for creating user VPNs 732 IntentFilter intentFilter = new IntentFilter(); 733 intentFilter.addAction(Intent.ACTION_USER_STARTING); 734 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 735 intentFilter.addAction(Intent.ACTION_USER_ADDED); 736 intentFilter.addAction(Intent.ACTION_USER_REMOVED); 737 intentFilter.addAction(Intent.ACTION_USER_UNLOCKED); 738 mContext.registerReceiverAsUser( 739 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 740 741 try { 742 mNetd.registerObserver(mTethering); 743 mNetd.registerObserver(mDataActivityObserver); 744 } catch (RemoteException e) { 745 loge("Error registering observer :" + e); 746 } 747 748 if (DBG) { 749 mInetLog = new ArrayList(); 750 } 751 752 mSettingsObserver = new SettingsObserver(mContext, mHandler); 753 registerSettingsCallbacks(); 754 755 mDataConnectionStats = new DataConnectionStats(mContext); 756 mDataConnectionStats.startMonitoring(); 757 758 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 759 760 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 761 762 mKeepaliveTracker = new KeepaliveTracker(mHandler); 763 } 764 765 private NetworkRequest createInternetRequestForTransport(int transportType) { 766 NetworkCapabilities netCap = new NetworkCapabilities(); 767 netCap.addCapability(NET_CAPABILITY_INTERNET); 768 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 769 if (transportType > -1) { 770 netCap.addTransportType(transportType); 771 } 772 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 773 } 774 775 private void handleMobileDataAlwaysOn() { 776 final boolean enable = (Settings.Global.getInt( 777 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 778 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 779 if (enable == isEnabled) { 780 return; // Nothing to do. 781 } 782 783 if (enable) { 784 handleRegisterNetworkRequest(new NetworkRequestInfo( 785 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestType.REQUEST)); 786 } else { 787 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 788 } 789 } 790 791 private void registerSettingsCallbacks() { 792 // Watch for global HTTP proxy changes. 793 mSettingsObserver.observe( 794 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 795 EVENT_APPLY_GLOBAL_HTTP_PROXY); 796 797 // Watch for whether or not to keep mobile data always on. 798 mSettingsObserver.observe( 799 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 800 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 801 } 802 803 private synchronized int nextNetworkRequestId() { 804 return mNextNetworkRequestId++; 805 } 806 807 @VisibleForTesting 808 protected int reserveNetId() { 809 synchronized (mNetworkForNetId) { 810 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 811 int netId = mNextNetId; 812 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 813 // Make sure NetID unused. http://b/16815182 814 if (!mNetIdInUse.get(netId)) { 815 mNetIdInUse.put(netId, true); 816 return netId; 817 } 818 } 819 } 820 throw new IllegalStateException("No free netIds"); 821 } 822 823 private NetworkState getFilteredNetworkState(int networkType, int uid) { 824 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 825 final NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 826 final NetworkState state; 827 if (nai != null) { 828 state = nai.getNetworkState(); 829 state.networkInfo.setType(networkType); 830 } else { 831 final NetworkInfo info = new NetworkInfo(networkType, 0, 832 getNetworkTypeName(networkType), ""); 833 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 834 info.setIsAvailable(true); 835 state = new NetworkState(info, new LinkProperties(), new NetworkCapabilities(), 836 null, null, null); 837 } 838 filterNetworkStateForUid(state, uid); 839 return state; 840 } else { 841 return NetworkState.EMPTY; 842 } 843 } 844 845 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 846 if (network == null) { 847 return null; 848 } 849 synchronized (mNetworkForNetId) { 850 return mNetworkForNetId.get(network.netId); 851 } 852 } 853 854 private Network[] getVpnUnderlyingNetworks(int uid) { 855 if (!mLockdownEnabled) { 856 int user = UserHandle.getUserId(uid); 857 synchronized (mVpns) { 858 Vpn vpn = mVpns.get(user); 859 if (vpn != null && vpn.appliesToUid(uid)) { 860 return vpn.getUnderlyingNetworks(); 861 } 862 } 863 } 864 return null; 865 } 866 867 private NetworkState getUnfilteredActiveNetworkState(int uid) { 868 NetworkAgentInfo nai = getDefaultNetwork(); 869 870 final Network[] networks = getVpnUnderlyingNetworks(uid); 871 if (networks != null) { 872 // getUnderlyingNetworks() returns: 873 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 874 // empty array => the VPN explicitly said "no default network". 875 // non-empty array => the VPN specified one or more default networks; we use the 876 // first one. 877 if (networks.length > 0) { 878 nai = getNetworkAgentInfoForNetwork(networks[0]); 879 } else { 880 nai = null; 881 } 882 } 883 884 if (nai != null) { 885 return nai.getNetworkState(); 886 } else { 887 return NetworkState.EMPTY; 888 } 889 } 890 891 /** 892 * Check if UID should be blocked from using the network with the given LinkProperties. 893 */ 894 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 895 final boolean networkCostly; 896 final int uidRules; 897 898 final String iface = (lp == null ? "" : lp.getInterfaceName()); 899 synchronized (mRulesLock) { 900 networkCostly = mMeteredIfaces.contains(iface); 901 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 902 } 903 904 if (uidRules == RULE_REJECT_ALL) { 905 return true; 906 } else if ((uidRules == RULE_REJECT_METERED) && networkCostly) { 907 return true; 908 } else { 909 return false; 910 } 911 } 912 913 private void maybeLogBlockedNetworkInfo(NetworkInfo ni, int uid) { 914 if (ni == null || !LOGD_BLOCKED_NETWORKINFO) return; 915 boolean removed = false; 916 boolean added = false; 917 synchronized (mBlockedAppUids) { 918 if (ni.getDetailedState() == DetailedState.BLOCKED && mBlockedAppUids.add(uid)) { 919 added = true; 920 } else if (ni.isConnected() && mBlockedAppUids.remove(uid)) { 921 removed = true; 922 } 923 } 924 if (added) log("Returning blocked NetworkInfo to uid=" + uid); 925 else if (removed) log("Returning unblocked NetworkInfo to uid=" + uid); 926 } 927 928 /** 929 * Apply any relevant filters to {@link NetworkState} for the given UID. For 930 * example, this may mark the network as {@link DetailedState#BLOCKED} based 931 * on {@link #isNetworkWithLinkPropertiesBlocked}, or 932 * {@link NetworkInfo#isMetered()} based on network policies. 933 */ 934 private void filterNetworkStateForUid(NetworkState state, int uid) { 935 if (state == null || state.networkInfo == null || state.linkProperties == null) return; 936 937 if (isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 938 state.networkInfo.setDetailedState(DetailedState.BLOCKED, null, null); 939 } 940 if (mLockdownTracker != null) { 941 mLockdownTracker.augmentNetworkInfo(state.networkInfo); 942 } 943 944 // TODO: apply metered state closer to NetworkAgentInfo 945 final long token = Binder.clearCallingIdentity(); 946 try { 947 state.networkInfo.setMetered(mPolicyManager.isNetworkMetered(state)); 948 } catch (RemoteException e) { 949 } finally { 950 Binder.restoreCallingIdentity(token); 951 } 952 } 953 954 /** 955 * Return NetworkInfo for the active (i.e., connected) network interface. 956 * It is assumed that at most one network is active at a time. If more 957 * than one is active, it is indeterminate which will be returned. 958 * @return the info for the active network, or {@code null} if none is 959 * active 960 */ 961 @Override 962 public NetworkInfo getActiveNetworkInfo() { 963 enforceAccessPermission(); 964 final int uid = Binder.getCallingUid(); 965 final NetworkState state = getUnfilteredActiveNetworkState(uid); 966 filterNetworkStateForUid(state, uid); 967 maybeLogBlockedNetworkInfo(state.networkInfo, uid); 968 return state.networkInfo; 969 } 970 971 @Override 972 public Network getActiveNetwork() { 973 enforceAccessPermission(); 974 return getActiveNetworkForUidInternal(Binder.getCallingUid()); 975 } 976 977 @Override 978 public Network getActiveNetworkForUid(int uid) { 979 enforceConnectivityInternalPermission(); 980 return getActiveNetworkForUidInternal(uid); 981 } 982 983 private Network getActiveNetworkForUidInternal(final int uid) { 984 final int user = UserHandle.getUserId(uid); 985 int vpnNetId = NETID_UNSET; 986 synchronized (mVpns) { 987 final Vpn vpn = mVpns.get(user); 988 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 989 } 990 NetworkAgentInfo nai; 991 if (vpnNetId != NETID_UNSET) { 992 synchronized (mNetworkForNetId) { 993 nai = mNetworkForNetId.get(vpnNetId); 994 } 995 if (nai != null) return nai.network; 996 } 997 nai = getDefaultNetwork(); 998 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 999 return nai != null ? nai.network : null; 1000 } 1001 1002 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1003 enforceAccessPermission(); 1004 final int uid = Binder.getCallingUid(); 1005 NetworkState state = getUnfilteredActiveNetworkState(uid); 1006 return state.networkInfo; 1007 } 1008 1009 @Override 1010 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1011 enforceConnectivityInternalPermission(); 1012 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1013 filterNetworkStateForUid(state, uid); 1014 return state.networkInfo; 1015 } 1016 1017 @Override 1018 public NetworkInfo getNetworkInfo(int networkType) { 1019 enforceAccessPermission(); 1020 final int uid = Binder.getCallingUid(); 1021 if (getVpnUnderlyingNetworks(uid) != null) { 1022 // A VPN is active, so we may need to return one of its underlying networks. This 1023 // information is not available in LegacyTypeTracker, so we have to get it from 1024 // getUnfilteredActiveNetworkState. 1025 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1026 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1027 filterNetworkStateForUid(state, uid); 1028 return state.networkInfo; 1029 } 1030 } 1031 final NetworkState state = getFilteredNetworkState(networkType, uid); 1032 return state.networkInfo; 1033 } 1034 1035 @Override 1036 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1037 enforceAccessPermission(); 1038 final int uid = Binder.getCallingUid(); 1039 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1040 if (nai != null) { 1041 final NetworkState state = nai.getNetworkState(); 1042 filterNetworkStateForUid(state, uid); 1043 return state.networkInfo; 1044 } else { 1045 return null; 1046 } 1047 } 1048 1049 @Override 1050 public NetworkInfo[] getAllNetworkInfo() { 1051 enforceAccessPermission(); 1052 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1053 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1054 networkType++) { 1055 NetworkInfo info = getNetworkInfo(networkType); 1056 if (info != null) { 1057 result.add(info); 1058 } 1059 } 1060 return result.toArray(new NetworkInfo[result.size()]); 1061 } 1062 1063 @Override 1064 public Network getNetworkForType(int networkType) { 1065 enforceAccessPermission(); 1066 final int uid = Binder.getCallingUid(); 1067 NetworkState state = getFilteredNetworkState(networkType, uid); 1068 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1069 return state.network; 1070 } 1071 return null; 1072 } 1073 1074 @Override 1075 public Network[] getAllNetworks() { 1076 enforceAccessPermission(); 1077 synchronized (mNetworkForNetId) { 1078 final Network[] result = new Network[mNetworkForNetId.size()]; 1079 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1080 result[i] = mNetworkForNetId.valueAt(i).network; 1081 } 1082 return result; 1083 } 1084 } 1085 1086 @Override 1087 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1088 // The basic principle is: if an app's traffic could possibly go over a 1089 // network, without the app doing anything multinetwork-specific, 1090 // (hence, by "default"), then include that network's capabilities in 1091 // the array. 1092 // 1093 // In the normal case, app traffic only goes over the system's default 1094 // network connection, so that's the only network returned. 1095 // 1096 // With a VPN in force, some app traffic may go into the VPN, and thus 1097 // over whatever underlying networks the VPN specifies, while other app 1098 // traffic may go over the system default network (e.g.: a split-tunnel 1099 // VPN, or an app disallowed by the VPN), so the set of networks 1100 // returned includes the VPN's underlying networks and the system 1101 // default. 1102 enforceAccessPermission(); 1103 1104 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1105 1106 NetworkAgentInfo nai = getDefaultNetwork(); 1107 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1108 if (nc != null) { 1109 result.put(nai.network, nc); 1110 } 1111 1112 if (!mLockdownEnabled) { 1113 synchronized (mVpns) { 1114 Vpn vpn = mVpns.get(userId); 1115 if (vpn != null) { 1116 Network[] networks = vpn.getUnderlyingNetworks(); 1117 if (networks != null) { 1118 for (Network network : networks) { 1119 nai = getNetworkAgentInfoForNetwork(network); 1120 nc = getNetworkCapabilitiesInternal(nai); 1121 if (nc != null) { 1122 result.put(network, nc); 1123 } 1124 } 1125 } 1126 } 1127 } 1128 } 1129 1130 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1131 out = result.values().toArray(out); 1132 return out; 1133 } 1134 1135 @Override 1136 public boolean isNetworkSupported(int networkType) { 1137 enforceAccessPermission(); 1138 return mLegacyTypeTracker.isTypeSupported(networkType); 1139 } 1140 1141 /** 1142 * Return LinkProperties for the active (i.e., connected) default 1143 * network interface. It is assumed that at most one default network 1144 * is active at a time. If more than one is active, it is indeterminate 1145 * which will be returned. 1146 * @return the ip properties for the active network, or {@code null} if 1147 * none is active 1148 */ 1149 @Override 1150 public LinkProperties getActiveLinkProperties() { 1151 enforceAccessPermission(); 1152 final int uid = Binder.getCallingUid(); 1153 NetworkState state = getUnfilteredActiveNetworkState(uid); 1154 return state.linkProperties; 1155 } 1156 1157 @Override 1158 public LinkProperties getLinkPropertiesForType(int networkType) { 1159 enforceAccessPermission(); 1160 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1161 if (nai != null) { 1162 synchronized (nai) { 1163 return new LinkProperties(nai.linkProperties); 1164 } 1165 } 1166 return null; 1167 } 1168 1169 // TODO - this should be ALL networks 1170 @Override 1171 public LinkProperties getLinkProperties(Network network) { 1172 enforceAccessPermission(); 1173 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1174 if (nai != null) { 1175 synchronized (nai) { 1176 return new LinkProperties(nai.linkProperties); 1177 } 1178 } 1179 return null; 1180 } 1181 1182 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1183 if (nai != null) { 1184 synchronized (nai) { 1185 if (nai.networkCapabilities != null) { 1186 return new NetworkCapabilities(nai.networkCapabilities); 1187 } 1188 } 1189 } 1190 return null; 1191 } 1192 1193 @Override 1194 public NetworkCapabilities getNetworkCapabilities(Network network) { 1195 enforceAccessPermission(); 1196 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1197 } 1198 1199 @Override 1200 public NetworkState[] getAllNetworkState() { 1201 // Require internal since we're handing out IMSI details 1202 enforceConnectivityInternalPermission(); 1203 1204 final ArrayList<NetworkState> result = Lists.newArrayList(); 1205 for (Network network : getAllNetworks()) { 1206 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1207 if (nai != null) { 1208 result.add(nai.getNetworkState()); 1209 } 1210 } 1211 return result.toArray(new NetworkState[result.size()]); 1212 } 1213 1214 @Override 1215 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1216 enforceAccessPermission(); 1217 final int uid = Binder.getCallingUid(); 1218 final long token = Binder.clearCallingIdentity(); 1219 try { 1220 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1221 if (state.networkInfo != null) { 1222 try { 1223 return mPolicyManager.getNetworkQuotaInfo(state); 1224 } catch (RemoteException e) { 1225 } 1226 } 1227 return null; 1228 } finally { 1229 Binder.restoreCallingIdentity(token); 1230 } 1231 } 1232 1233 @Override 1234 public boolean isActiveNetworkMetered() { 1235 enforceAccessPermission(); 1236 1237 final NetworkInfo info = getActiveNetworkInfo(); 1238 return (info != null) ? info.isMetered() : false; 1239 } 1240 1241 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1242 @Override 1243 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1244 int deviceType = Integer.parseInt(label); 1245 sendDataActivityBroadcast(deviceType, active, tsNanos); 1246 } 1247 }; 1248 1249 /** 1250 * Ensure that a network route exists to deliver traffic to the specified 1251 * host via the specified network interface. 1252 * @param networkType the type of the network over which traffic to the 1253 * specified host is to be routed 1254 * @param hostAddress the IP address of the host to which the route is 1255 * desired 1256 * @return {@code true} on success, {@code false} on failure 1257 */ 1258 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1259 enforceChangePermission(); 1260 if (mProtectedNetworks.contains(networkType)) { 1261 enforceConnectivityInternalPermission(); 1262 } 1263 1264 InetAddress addr; 1265 try { 1266 addr = InetAddress.getByAddress(hostAddress); 1267 } catch (UnknownHostException e) { 1268 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1269 return false; 1270 } 1271 1272 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1273 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1274 return false; 1275 } 1276 1277 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1278 if (nai == null) { 1279 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1280 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1281 } else { 1282 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1283 } 1284 return false; 1285 } 1286 1287 DetailedState netState; 1288 synchronized (nai) { 1289 netState = nai.networkInfo.getDetailedState(); 1290 } 1291 1292 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1293 if (VDBG) { 1294 log("requestRouteToHostAddress on down network " 1295 + "(" + networkType + ") - dropped" 1296 + " netState=" + netState); 1297 } 1298 return false; 1299 } 1300 1301 final int uid = Binder.getCallingUid(); 1302 final long token = Binder.clearCallingIdentity(); 1303 try { 1304 LinkProperties lp; 1305 int netId; 1306 synchronized (nai) { 1307 lp = nai.linkProperties; 1308 netId = nai.network.netId; 1309 } 1310 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1311 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1312 return ok; 1313 } finally { 1314 Binder.restoreCallingIdentity(token); 1315 } 1316 } 1317 1318 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1319 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1320 if (bestRoute == null) { 1321 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1322 } else { 1323 String iface = bestRoute.getInterface(); 1324 if (bestRoute.getGateway().equals(addr)) { 1325 // if there is no better route, add the implied hostroute for our gateway 1326 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1327 } else { 1328 // if we will connect to this through another route, add a direct route 1329 // to it's gateway 1330 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1331 } 1332 } 1333 if (DBG) log("Adding legacy route " + bestRoute + 1334 " for UID/PID " + uid + "/" + Binder.getCallingPid()); 1335 try { 1336 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1337 } catch (Exception e) { 1338 // never crash - catch them all 1339 if (DBG) loge("Exception trying to add a route: " + e); 1340 return false; 1341 } 1342 return true; 1343 } 1344 1345 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1346 @Override 1347 public void onUidRulesChanged(int uid, int uidRules) { 1348 // caller is NPMS, since we only register with them 1349 if (LOGD_RULES) { 1350 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1351 } 1352 1353 synchronized (mRulesLock) { 1354 // skip update when we've already applied rules 1355 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1356 if (oldRules == uidRules) return; 1357 1358 mUidRules.put(uid, uidRules); 1359 } 1360 1361 // TODO: notify UID when it has requested targeted updates 1362 } 1363 1364 @Override 1365 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1366 // caller is NPMS, since we only register with them 1367 if (LOGD_RULES) { 1368 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1369 } 1370 1371 synchronized (mRulesLock) { 1372 mMeteredIfaces.clear(); 1373 for (String iface : meteredIfaces) { 1374 mMeteredIfaces.add(iface); 1375 } 1376 } 1377 } 1378 1379 @Override 1380 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1381 // caller is NPMS, since we only register with them 1382 if (LOGD_RULES) { 1383 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1384 } 1385 } 1386 1387 @Override 1388 public void onRestrictBackgroundWhitelistChanged(int uid, boolean whitelisted) { 1389 if (LOGD_RULES) { 1390 // caller is NPMS, since we only register with them 1391 log("onRestrictBackgroundWhitelistChanged(uid=" + uid + ", whitelisted=" 1392 + whitelisted + ")"); 1393 } 1394 } 1395 }; 1396 1397 /** 1398 * Require that the caller is either in the same user or has appropriate permission to interact 1399 * across users. 1400 * 1401 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1402 */ 1403 private void enforceCrossUserPermission(int userId) { 1404 if (userId == UserHandle.getCallingUserId()) { 1405 // Not a cross-user call. 1406 return; 1407 } 1408 mContext.enforceCallingOrSelfPermission( 1409 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1410 "ConnectivityService"); 1411 } 1412 1413 private void enforceInternetPermission() { 1414 mContext.enforceCallingOrSelfPermission( 1415 android.Manifest.permission.INTERNET, 1416 "ConnectivityService"); 1417 } 1418 1419 private void enforceAccessPermission() { 1420 mContext.enforceCallingOrSelfPermission( 1421 android.Manifest.permission.ACCESS_NETWORK_STATE, 1422 "ConnectivityService"); 1423 } 1424 1425 private void enforceChangePermission() { 1426 ConnectivityManager.enforceChangePermission(mContext); 1427 } 1428 1429 private void enforceTetherAccessPermission() { 1430 mContext.enforceCallingOrSelfPermission( 1431 android.Manifest.permission.ACCESS_NETWORK_STATE, 1432 "ConnectivityService"); 1433 } 1434 1435 private void enforceConnectivityInternalPermission() { 1436 mContext.enforceCallingOrSelfPermission( 1437 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1438 "ConnectivityService"); 1439 } 1440 1441 private void enforceKeepalivePermission() { 1442 mContext.enforceCallingOrSelfPermission(KeepaliveTracker.PERMISSION, "ConnectivityService"); 1443 } 1444 1445 public void sendConnectedBroadcast(NetworkInfo info) { 1446 enforceConnectivityInternalPermission(); 1447 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1448 } 1449 1450 private void sendInetConditionBroadcast(NetworkInfo info) { 1451 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1452 } 1453 1454 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1455 if (mLockdownTracker != null) { 1456 info = new NetworkInfo(info); 1457 mLockdownTracker.augmentNetworkInfo(info); 1458 } 1459 1460 Intent intent = new Intent(bcastType); 1461 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1462 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1463 if (info.isFailover()) { 1464 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1465 info.setFailover(false); 1466 } 1467 if (info.getReason() != null) { 1468 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1469 } 1470 if (info.getExtraInfo() != null) { 1471 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1472 info.getExtraInfo()); 1473 } 1474 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1475 return intent; 1476 } 1477 1478 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1479 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1480 } 1481 1482 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1483 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1484 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1485 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1486 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1487 final long ident = Binder.clearCallingIdentity(); 1488 try { 1489 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1490 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1491 } finally { 1492 Binder.restoreCallingIdentity(ident); 1493 } 1494 } 1495 1496 private void sendStickyBroadcast(Intent intent) { 1497 synchronized(this) { 1498 if (!mSystemReady) { 1499 mInitialBroadcast = new Intent(intent); 1500 } 1501 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1502 if (VDBG) { 1503 log("sendStickyBroadcast: action=" + intent.getAction()); 1504 } 1505 1506 Bundle options = null; 1507 final long ident = Binder.clearCallingIdentity(); 1508 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1509 final NetworkInfo ni = intent.getParcelableExtra( 1510 ConnectivityManager.EXTRA_NETWORK_INFO); 1511 if (ni.getType() == ConnectivityManager.TYPE_MOBILE_SUPL) { 1512 intent.setAction(ConnectivityManager.CONNECTIVITY_ACTION_SUPL); 1513 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1514 } else { 1515 BroadcastOptions opts = BroadcastOptions.makeBasic(); 1516 opts.setMaxManifestReceiverApiLevel(Build.VERSION_CODES.M); 1517 options = opts.toBundle(); 1518 } 1519 final IBatteryStats bs = BatteryStatsService.getService(); 1520 try { 1521 bs.noteConnectivityChanged(intent.getIntExtra( 1522 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1523 ni != null ? ni.getState().toString() : "?"); 1524 } catch (RemoteException e) { 1525 } 1526 } 1527 try { 1528 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL, options); 1529 } finally { 1530 Binder.restoreCallingIdentity(ident); 1531 } 1532 } 1533 } 1534 1535 void systemReady() { 1536 loadGlobalProxy(); 1537 1538 synchronized(this) { 1539 mSystemReady = true; 1540 if (mInitialBroadcast != null) { 1541 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1542 mInitialBroadcast = null; 1543 } 1544 } 1545 // load the global proxy at startup 1546 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1547 1548 // Try bringing up tracker, but KeyStore won't be ready yet for secondary users so wait 1549 // for user to unlock device too. 1550 updateLockdownVpn(); 1551 1552 // Configure whether mobile data is always on. 1553 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1554 1555 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1556 1557 mPermissionMonitor.startMonitoring(); 1558 } 1559 1560 /** 1561 * Setup data activity tracking for the given network. 1562 * 1563 * Every {@code setupDataActivityTracking} should be paired with a 1564 * {@link #removeDataActivityTracking} for cleanup. 1565 */ 1566 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1567 final String iface = networkAgent.linkProperties.getInterfaceName(); 1568 1569 final int timeout; 1570 int type = ConnectivityManager.TYPE_NONE; 1571 1572 if (networkAgent.networkCapabilities.hasTransport( 1573 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1574 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1575 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1576 10); 1577 type = ConnectivityManager.TYPE_MOBILE; 1578 } else if (networkAgent.networkCapabilities.hasTransport( 1579 NetworkCapabilities.TRANSPORT_WIFI)) { 1580 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1581 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1582 15); 1583 type = ConnectivityManager.TYPE_WIFI; 1584 } else { 1585 // do not track any other networks 1586 timeout = 0; 1587 } 1588 1589 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1590 try { 1591 mNetd.addIdleTimer(iface, timeout, type); 1592 } catch (Exception e) { 1593 // You shall not crash! 1594 loge("Exception in setupDataActivityTracking " + e); 1595 } 1596 } 1597 } 1598 1599 /** 1600 * Remove data activity tracking when network disconnects. 1601 */ 1602 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1603 final String iface = networkAgent.linkProperties.getInterfaceName(); 1604 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1605 1606 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1607 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1608 try { 1609 // the call fails silently if no idletimer setup for this interface 1610 mNetd.removeIdleTimer(iface); 1611 } catch (Exception e) { 1612 loge("Exception in removeDataActivityTracking " + e); 1613 } 1614 } 1615 } 1616 1617 /** 1618 * Reads the network specific MTU size from reources. 1619 * and set it on it's iface. 1620 */ 1621 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1622 final String iface = newLp.getInterfaceName(); 1623 final int mtu = newLp.getMtu(); 1624 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1625 if (VDBG) log("identical MTU - not setting"); 1626 return; 1627 } 1628 1629 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1630 if (mtu != 0) loge("Unexpected mtu value: " + mtu + ", " + iface); 1631 return; 1632 } 1633 1634 // Cannot set MTU without interface name 1635 if (TextUtils.isEmpty(iface)) { 1636 loge("Setting MTU size with null iface."); 1637 return; 1638 } 1639 1640 try { 1641 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 1642 mNetd.setMtu(iface, mtu); 1643 } catch (Exception e) { 1644 Slog.e(TAG, "exception in setMtu()" + e); 1645 } 1646 } 1647 1648 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1649 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1650 1651 // Overridden for testing purposes to avoid writing to SystemProperties. 1652 @VisibleForTesting 1653 protected int getDefaultTcpRwnd() { 1654 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1655 } 1656 1657 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1658 if (isDefaultNetwork(nai) == false) { 1659 return; 1660 } 1661 1662 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1663 String[] values = null; 1664 if (tcpBufferSizes != null) { 1665 values = tcpBufferSizes.split(","); 1666 } 1667 1668 if (values == null || values.length != 6) { 1669 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1670 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1671 values = tcpBufferSizes.split(","); 1672 } 1673 1674 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1675 1676 try { 1677 if (VDBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1678 1679 final String prefix = "/sys/kernel/ipv4/tcp_"; 1680 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1681 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1682 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1683 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1684 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1685 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1686 mCurrentTcpBufferSizes = tcpBufferSizes; 1687 } catch (IOException e) { 1688 loge("Can't set TCP buffer sizes:" + e); 1689 } 1690 1691 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1692 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1693 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1694 if (rwndValue != 0) { 1695 SystemProperties.set(sysctlKey, rwndValue.toString()); 1696 } 1697 } 1698 1699 private void flushVmDnsCache() { 1700 /* 1701 * Tell the VMs to toss their DNS caches 1702 */ 1703 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1704 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1705 /* 1706 * Connectivity events can happen before boot has completed ... 1707 */ 1708 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1709 final long ident = Binder.clearCallingIdentity(); 1710 try { 1711 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1712 } finally { 1713 Binder.restoreCallingIdentity(ident); 1714 } 1715 } 1716 1717 @Override 1718 public int getRestoreDefaultNetworkDelay(int networkType) { 1719 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1720 NETWORK_RESTORE_DELAY_PROP_NAME); 1721 if(restoreDefaultNetworkDelayStr != null && 1722 restoreDefaultNetworkDelayStr.length() != 0) { 1723 try { 1724 return Integer.parseInt(restoreDefaultNetworkDelayStr); 1725 } catch (NumberFormatException e) { 1726 } 1727 } 1728 // if the system property isn't set, use the value for the apn type 1729 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1730 1731 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1732 (mNetConfigs[networkType] != null)) { 1733 ret = mNetConfigs[networkType].restoreTime; 1734 } 1735 return ret; 1736 } 1737 1738 private boolean argsContain(String[] args, String target) { 1739 for (String arg : args) { 1740 if (arg.equals(target)) return true; 1741 } 1742 return false; 1743 } 1744 1745 private void dumpNetworkDiagnostics(IndentingPrintWriter pw) { 1746 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1747 final long DIAG_TIME_MS = 5000; 1748 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1749 // Start gathering diagnostic information. 1750 netDiags.add(new NetworkDiagnostics( 1751 nai.network, 1752 new LinkProperties(nai.linkProperties), // Must be a copy. 1753 DIAG_TIME_MS)); 1754 } 1755 1756 for (NetworkDiagnostics netDiag : netDiags) { 1757 pw.println(); 1758 netDiag.waitForMeasurements(); 1759 netDiag.dump(pw); 1760 } 1761 } 1762 1763 @Override 1764 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1765 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1766 if (mContext.checkCallingOrSelfPermission( 1767 android.Manifest.permission.DUMP) 1768 != PackageManager.PERMISSION_GRANTED) { 1769 pw.println("Permission Denial: can't dump ConnectivityService " + 1770 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1771 Binder.getCallingUid()); 1772 return; 1773 } 1774 1775 if (argsContain(args, "--diag")) { 1776 dumpNetworkDiagnostics(pw); 1777 return; 1778 } 1779 1780 pw.print("NetworkFactories for:"); 1781 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1782 pw.print(" " + nfi.name); 1783 } 1784 pw.println(); 1785 pw.println(); 1786 1787 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 1788 pw.print("Active default network: "); 1789 if (defaultNai == null) { 1790 pw.println("none"); 1791 } else { 1792 pw.println(defaultNai.network.netId); 1793 } 1794 pw.println(); 1795 1796 pw.println("Current Networks:"); 1797 pw.increaseIndent(); 1798 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1799 pw.println(nai.toString()); 1800 pw.increaseIndent(); 1801 pw.println("Requests:"); 1802 pw.increaseIndent(); 1803 for (int i = 0; i < nai.networkRequests.size(); i++) { 1804 pw.println(nai.networkRequests.valueAt(i).toString()); 1805 } 1806 pw.decreaseIndent(); 1807 pw.println("Lingered:"); 1808 pw.increaseIndent(); 1809 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1810 pw.decreaseIndent(); 1811 pw.decreaseIndent(); 1812 } 1813 pw.decreaseIndent(); 1814 pw.println(); 1815 1816 pw.println("Network Requests:"); 1817 pw.increaseIndent(); 1818 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1819 pw.println(nri.toString()); 1820 } 1821 pw.println(); 1822 pw.decreaseIndent(); 1823 1824 mLegacyTypeTracker.dump(pw); 1825 1826 synchronized (this) { 1827 pw.print("mNetTransitionWakeLock: currently " + 1828 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1829 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1830 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1831 } else { 1832 pw.println(", last requested never"); 1833 } 1834 } 1835 1836 pw.println(); 1837 mTethering.dump(fd, pw, args); 1838 1839 pw.println(); 1840 mKeepaliveTracker.dump(pw); 1841 1842 pw.println(); 1843 1844 if (mInetLog != null && mInetLog.size() > 0) { 1845 pw.println(); 1846 pw.println("Inet condition reports:"); 1847 pw.increaseIndent(); 1848 for(int i = 0; i < mInetLog.size(); i++) { 1849 pw.println(mInetLog.get(i)); 1850 } 1851 pw.decreaseIndent(); 1852 } 1853 1854 if (argsContain(args, "--short") == false) { 1855 pw.println(); 1856 synchronized (mValidationLogs) { 1857 pw.println("mValidationLogs (most recent first):"); 1858 for (Pair<Network,ReadOnlyLocalLog> p : mValidationLogs) { 1859 pw.println(p.first); 1860 pw.increaseIndent(); 1861 p.second.dump(fd, pw, args); 1862 pw.decreaseIndent(); 1863 } 1864 } 1865 1866 pw.println(); 1867 pw.println("mNetworkRequestInfoLogs (most recent first):"); 1868 pw.increaseIndent(); 1869 mNetworkRequestInfoLogs.reverseDump(fd, pw, args); 1870 pw.decreaseIndent(); 1871 } 1872 } 1873 1874 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, int what) { 1875 if (nai.network == null) return false; 1876 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1877 if (officialNai != null && officialNai.equals(nai)) return true; 1878 if (officialNai != null || VDBG) { 1879 final String msg = sMagicDecoderRing.get(what, Integer.toString(what)); 1880 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1881 " - " + nai); 1882 } 1883 return false; 1884 } 1885 1886 private boolean isRequest(NetworkRequest request) { 1887 return mNetworkRequests.get(request).isRequest(); 1888 } 1889 1890 // must be stateless - things change under us. 1891 private class NetworkStateTrackerHandler extends Handler { 1892 public NetworkStateTrackerHandler(Looper looper) { 1893 super(looper); 1894 } 1895 1896 private boolean maybeHandleAsyncChannelMessage(Message msg) { 1897 switch (msg.what) { 1898 default: 1899 return false; 1900 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1901 handleAsyncChannelHalfConnect(msg); 1902 break; 1903 } 1904 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1905 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1906 if (nai != null) nai.asyncChannel.disconnect(); 1907 break; 1908 } 1909 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1910 handleAsyncChannelDisconnected(msg); 1911 break; 1912 } 1913 } 1914 return true; 1915 } 1916 1917 private void maybeHandleNetworkAgentMessage(Message msg) { 1918 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1919 if (nai == null) { 1920 if (VDBG) { 1921 final String what = sMagicDecoderRing.get(msg.what, Integer.toString(msg.what)); 1922 log(String.format("%s from unknown NetworkAgent", what)); 1923 } 1924 return; 1925 } 1926 1927 switch (msg.what) { 1928 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1929 final NetworkCapabilities networkCapabilities = (NetworkCapabilities) msg.obj; 1930 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL) || 1931 networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 1932 Slog.wtf(TAG, "BUG: " + nai + " has CS-managed capability."); 1933 } 1934 if (nai.created && !nai.networkCapabilities.equalImmutableCapabilities( 1935 networkCapabilities)) { 1936 Slog.wtf(TAG, "BUG: " + nai + " changed immutable capabilities: " 1937 + nai.networkCapabilities + " -> " + networkCapabilities); 1938 } 1939 updateCapabilities(nai, networkCapabilities); 1940 break; 1941 } 1942 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1943 if (VDBG) { 1944 log("Update of LinkProperties for " + nai.name() + 1945 "; created=" + nai.created); 1946 } 1947 LinkProperties oldLp = nai.linkProperties; 1948 synchronized (nai) { 1949 nai.linkProperties = (LinkProperties)msg.obj; 1950 } 1951 if (nai.created) updateLinkProperties(nai, oldLp); 1952 break; 1953 } 1954 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1955 NetworkInfo info = (NetworkInfo) msg.obj; 1956 updateNetworkInfo(nai, info); 1957 break; 1958 } 1959 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1960 Integer score = (Integer) msg.obj; 1961 if (score != null) updateNetworkScore(nai, score.intValue()); 1962 break; 1963 } 1964 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1965 try { 1966 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1967 } catch (Exception e) { 1968 // Never crash! 1969 loge("Exception in addVpnUidRanges: " + e); 1970 } 1971 break; 1972 } 1973 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1974 try { 1975 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1976 } catch (Exception e) { 1977 // Never crash! 1978 loge("Exception in removeVpnUidRanges: " + e); 1979 } 1980 break; 1981 } 1982 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1983 if (nai.created && !nai.networkMisc.explicitlySelected) { 1984 loge("ERROR: created network explicitly selected."); 1985 } 1986 nai.networkMisc.explicitlySelected = true; 1987 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 1988 break; 1989 } 1990 case NetworkAgent.EVENT_PACKET_KEEPALIVE: { 1991 mKeepaliveTracker.handleEventPacketKeepalive(nai, msg); 1992 break; 1993 } 1994 } 1995 } 1996 1997 private boolean maybeHandleNetworkMonitorMessage(Message msg) { 1998 switch (msg.what) { 1999 default: 2000 return false; 2001 case NetworkMonitor.EVENT_NETWORK_TESTED: { 2002 final NetworkAgentInfo nai; 2003 synchronized (mNetworkForNetId) { 2004 nai = mNetworkForNetId.get(msg.arg2); 2005 } 2006 if (nai != null) { 2007 final boolean valid = 2008 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2009 if (DBG) log(nai.name() + " validation " + (valid ? "passed" : "failed") + 2010 (msg.obj == null ? "" : " with redirect to " + (String)msg.obj)); 2011 if (valid != nai.lastValidated) { 2012 final int oldScore = nai.getCurrentScore(); 2013 nai.lastValidated = valid; 2014 nai.everValidated |= valid; 2015 updateCapabilities(nai, nai.networkCapabilities); 2016 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2017 if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); 2018 } 2019 updateInetCondition(nai); 2020 // Let the NetworkAgent know the state of its network 2021 Bundle redirectUrlBundle = new Bundle(); 2022 redirectUrlBundle.putString(NetworkAgent.REDIRECT_URL_KEY, (String)msg.obj); 2023 nai.asyncChannel.sendMessage( 2024 NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2025 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2026 0, redirectUrlBundle); 2027 } 2028 break; 2029 } 2030 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2031 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2032 if (isLiveNetworkAgent(nai, msg.what)) { 2033 handleLingerComplete(nai); 2034 } 2035 break; 2036 } 2037 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2038 final int netId = msg.arg2; 2039 final boolean visible = (msg.arg1 != 0); 2040 final NetworkAgentInfo nai; 2041 synchronized (mNetworkForNetId) { 2042 nai = mNetworkForNetId.get(netId); 2043 } 2044 // If captive portal status has changed, update capabilities. 2045 if (nai != null && (visible != nai.lastCaptivePortalDetected)) { 2046 nai.lastCaptivePortalDetected = visible; 2047 nai.everCaptivePortalDetected |= visible; 2048 updateCapabilities(nai, nai.networkCapabilities); 2049 } 2050 if (!visible) { 2051 setProvNotificationVisibleIntent(false, netId, null, 0, null, null, false); 2052 } else { 2053 if (nai == null) { 2054 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2055 break; 2056 } 2057 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2058 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), 2059 (PendingIntent)msg.obj, nai.networkMisc.explicitlySelected); 2060 } 2061 break; 2062 } 2063 } 2064 return true; 2065 } 2066 2067 @Override 2068 public void handleMessage(Message msg) { 2069 if (!maybeHandleAsyncChannelMessage(msg) && !maybeHandleNetworkMonitorMessage(msg)) { 2070 maybeHandleNetworkAgentMessage(msg); 2071 } 2072 } 2073 } 2074 2075 private void linger(NetworkAgentInfo nai) { 2076 nai.lingering = true; 2077 NetworkEvent.logEvent(nai.network.netId, NetworkEvent.NETWORK_LINGER); 2078 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 2079 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 2080 } 2081 2082 // Cancel any lingering so the linger timeout doesn't teardown a network. 2083 // This should be called when a network begins satisfying a NetworkRequest. 2084 // Note: depending on what state the NetworkMonitor is in (e.g., 2085 // if it's awaiting captive portal login, or if validation failed), this 2086 // may trigger a re-evaluation of the network. 2087 private void unlinger(NetworkAgentInfo nai) { 2088 nai.networkLingered.clear(); 2089 if (!nai.lingering) return; 2090 nai.lingering = false; 2091 NetworkEvent.logEvent(nai.network.netId, NetworkEvent.NETWORK_UNLINGER); 2092 if (VDBG) log("Canceling linger of " + nai.name()); 2093 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2094 } 2095 2096 private void handleAsyncChannelHalfConnect(Message msg) { 2097 AsyncChannel ac = (AsyncChannel) msg.obj; 2098 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2099 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2100 if (VDBG) log("NetworkFactory connected"); 2101 // A network factory has connected. Send it all current NetworkRequests. 2102 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2103 if (!nri.isRequest()) continue; 2104 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2105 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2106 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2107 } 2108 } else { 2109 loge("Error connecting NetworkFactory"); 2110 mNetworkFactoryInfos.remove(msg.obj); 2111 } 2112 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2113 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2114 if (VDBG) log("NetworkAgent connected"); 2115 // A network agent has requested a connection. Establish the connection. 2116 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2117 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2118 } else { 2119 loge("Error connecting NetworkAgent"); 2120 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2121 if (nai != null) { 2122 final boolean wasDefault = isDefaultNetwork(nai); 2123 synchronized (mNetworkForNetId) { 2124 mNetworkForNetId.remove(nai.network.netId); 2125 mNetIdInUse.delete(nai.network.netId); 2126 } 2127 // Just in case. 2128 mLegacyTypeTracker.remove(nai, wasDefault); 2129 } 2130 } 2131 } 2132 } 2133 2134 private void handleAsyncChannelDisconnected(Message msg) { 2135 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2136 if (nai != null) { 2137 if (DBG) { 2138 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2139 } 2140 // A network agent has disconnected. 2141 // TODO - if we move the logic to the network agent (have them disconnect 2142 // because they lost all their requests or because their score isn't good) 2143 // then they would disconnect organically, report their new state and then 2144 // disconnect the channel. 2145 if (nai.networkInfo.isConnected()) { 2146 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2147 null, null); 2148 } 2149 final boolean wasDefault = isDefaultNetwork(nai); 2150 if (wasDefault) { 2151 mDefaultInetConditionPublished = 0; 2152 } 2153 notifyIfacesChangedForNetworkStats(); 2154 // TODO - we shouldn't send CALLBACK_LOST to requests that can be satisfied 2155 // by other networks that are already connected. Perhaps that can be done by 2156 // sending all CALLBACK_LOST messages (for requests, not listens) at the end 2157 // of rematchAllNetworksAndRequests 2158 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2159 mKeepaliveTracker.handleStopAllKeepalives(nai, 2160 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 2161 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2162 mNetworkAgentInfos.remove(msg.replyTo); 2163 updateClat(null, nai.linkProperties, nai); 2164 synchronized (mNetworkForNetId) { 2165 // Remove the NetworkAgent, but don't mark the netId as 2166 // available until we've told netd to delete it below. 2167 mNetworkForNetId.remove(nai.network.netId); 2168 } 2169 // Remove all previously satisfied requests. 2170 for (int i = 0; i < nai.networkRequests.size(); i++) { 2171 NetworkRequest request = nai.networkRequests.valueAt(i); 2172 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2173 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2174 mNetworkForRequestId.remove(request.requestId); 2175 sendUpdatedScoreToFactories(request, 0); 2176 } 2177 } 2178 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2179 removeDataActivityTracking(nai); 2180 notifyLockdownVpn(nai); 2181 requestNetworkTransitionWakelock(nai.name()); 2182 } 2183 mLegacyTypeTracker.remove(nai, wasDefault); 2184 rematchAllNetworksAndRequests(null, 0); 2185 if (wasDefault && getDefaultNetwork() == null) { 2186 // Log that we lost the default network and there is no replacement. 2187 logDefaultNetworkEvent(null, nai); 2188 } 2189 if (nai.created) { 2190 // Tell netd to clean up the configuration for this network 2191 // (routing rules, DNS, etc). 2192 // This may be slow as it requires a lot of netd shelling out to ip and 2193 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2194 // after we've rematched networks with requests which should make a potential 2195 // fallback network the default or requested a new network from the 2196 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2197 // long time. 2198 try { 2199 mNetd.removeNetwork(nai.network.netId); 2200 } catch (Exception e) { 2201 loge("Exception removing network: " + e); 2202 } 2203 } 2204 synchronized (mNetworkForNetId) { 2205 mNetIdInUse.delete(nai.network.netId); 2206 } 2207 } else { 2208 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2209 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2210 } 2211 } 2212 2213 // If this method proves to be too slow then we can maintain a separate 2214 // pendingIntent => NetworkRequestInfo map. 2215 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2216 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2217 Intent intent = pendingIntent.getIntent(); 2218 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2219 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2220 if (existingPendingIntent != null && 2221 existingPendingIntent.getIntent().filterEquals(intent)) { 2222 return entry.getValue(); 2223 } 2224 } 2225 return null; 2226 } 2227 2228 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2229 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2230 2231 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2232 if (existingRequest != null) { // remove the existing request. 2233 if (DBG) log("Replacing " + existingRequest.request + " with " 2234 + nri.request + " because their intents matched."); 2235 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2236 } 2237 handleRegisterNetworkRequest(nri); 2238 } 2239 2240 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2241 mNetworkRequests.put(nri.request, nri); 2242 mNetworkRequestInfoLogs.log("REGISTER " + nri); 2243 if (!nri.isRequest()) { 2244 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2245 if (nri.request.networkCapabilities.hasSignalStrength() && 2246 network.satisfiesImmutableCapabilitiesOf(nri.request)) { 2247 updateSignalStrengthThresholds(network, "REGISTER", nri.request); 2248 } 2249 } 2250 } 2251 rematchAllNetworksAndRequests(null, 0); 2252 if (nri.isRequest() && mNetworkForRequestId.get(nri.request.requestId) == null) { 2253 sendUpdatedScoreToFactories(nri.request, 0); 2254 } 2255 } 2256 2257 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2258 int callingUid) { 2259 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2260 if (nri != null) { 2261 handleReleaseNetworkRequest(nri.request, callingUid); 2262 } 2263 } 2264 2265 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2266 // This is whether it is satisfying any NetworkRequests or were it to become validated, 2267 // would it have a chance of satisfying any NetworkRequests. 2268 private boolean unneeded(NetworkAgentInfo nai) { 2269 if (!nai.created || nai.isVPN() || nai.lingering) return false; 2270 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2271 // If this Network is already the highest scoring Network for a request, or if 2272 // there is hope for it to become one if it validated, then it is needed. 2273 if (nri.isRequest() && nai.satisfies(nri.request) && 2274 (nai.networkRequests.get(nri.request.requestId) != null || 2275 // Note that this catches two important cases: 2276 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2277 // is currently satisfying the request. This is desirable when 2278 // cellular ends up validating but WiFi does not. 2279 // 2. Unvalidated WiFi will not be reaped when validated cellular 2280 // is currently satisfying the request. This is desirable when 2281 // WiFi ends up validating and out scoring cellular. 2282 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2283 nai.getCurrentScoreAsValidated())) { 2284 return false; 2285 } 2286 } 2287 return true; 2288 } 2289 2290 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2291 NetworkRequestInfo nri = mNetworkRequests.get(request); 2292 if (nri != null) { 2293 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2294 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2295 return; 2296 } 2297 if (VDBG || (DBG && nri.isRequest())) log("releasing NetworkRequest " + request); 2298 nri.unlinkDeathRecipient(); 2299 mNetworkRequests.remove(request); 2300 synchronized (mUidToNetworkRequestCount) { 2301 int requests = mUidToNetworkRequestCount.get(nri.mUid, 0); 2302 if (requests < 1) { 2303 Slog.wtf(TAG, "BUG: too small request count " + requests + " for UID " + 2304 nri.mUid); 2305 } else if (requests == 1) { 2306 mUidToNetworkRequestCount.removeAt( 2307 mUidToNetworkRequestCount.indexOfKey(nri.mUid)); 2308 } else { 2309 mUidToNetworkRequestCount.put(nri.mUid, requests - 1); 2310 } 2311 } 2312 mNetworkRequestInfoLogs.log("RELEASE " + nri); 2313 if (nri.isRequest()) { 2314 // Find all networks that are satisfying this request and remove the request 2315 // from their request lists. 2316 // TODO - it's my understanding that for a request there is only a single 2317 // network satisfying it, so this loop is wasteful 2318 boolean wasKept = false; 2319 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2320 if (nai.networkRequests.get(nri.request.requestId) != null) { 2321 nai.networkRequests.remove(nri.request.requestId); 2322 if (VDBG) { 2323 log(" Removing from current network " + nai.name() + 2324 ", leaving " + nai.networkRequests.size() + 2325 " requests."); 2326 } 2327 if (unneeded(nai)) { 2328 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2329 teardownUnneededNetwork(nai); 2330 } else { 2331 // suspect there should only be one pass through here 2332 // but if any were kept do the check below 2333 wasKept |= true; 2334 } 2335 } 2336 } 2337 2338 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2339 if (nai != null) { 2340 mNetworkForRequestId.remove(nri.request.requestId); 2341 } 2342 // Maintain the illusion. When this request arrived, we might have pretended 2343 // that a network connected to serve it, even though the network was already 2344 // connected. Now that this request has gone away, we might have to pretend 2345 // that the network disconnected. LegacyTypeTracker will generate that 2346 // phantom disconnect for this type. 2347 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2348 boolean doRemove = true; 2349 if (wasKept) { 2350 // check if any of the remaining requests for this network are for the 2351 // same legacy type - if so, don't remove the nai 2352 for (int i = 0; i < nai.networkRequests.size(); i++) { 2353 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2354 if (otherRequest.legacyType == nri.request.legacyType && 2355 isRequest(otherRequest)) { 2356 if (DBG) log(" still have other legacy request - leaving"); 2357 doRemove = false; 2358 } 2359 } 2360 } 2361 2362 if (doRemove) { 2363 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2364 } 2365 } 2366 2367 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2368 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2369 nri.request); 2370 } 2371 } else { 2372 // listens don't have a singular affectedNetwork. Check all networks to see 2373 // if this listen request applies and remove it. 2374 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2375 nai.networkRequests.remove(nri.request.requestId); 2376 if (nri.request.networkCapabilities.hasSignalStrength() && 2377 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 2378 updateSignalStrengthThresholds(nai, "RELEASE", nri.request); 2379 } 2380 } 2381 } 2382 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2383 } 2384 } 2385 2386 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2387 enforceConnectivityInternalPermission(); 2388 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2389 accept ? 1 : 0, always ? 1: 0, network)); 2390 } 2391 2392 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2393 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2394 " accept=" + accept + " always=" + always); 2395 2396 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2397 if (nai == null) { 2398 // Nothing to do. 2399 return; 2400 } 2401 2402 if (nai.everValidated) { 2403 // The network validated while the dialog box was up. Take no action. 2404 return; 2405 } 2406 2407 if (!nai.networkMisc.explicitlySelected) { 2408 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2409 } 2410 2411 if (accept != nai.networkMisc.acceptUnvalidated) { 2412 int oldScore = nai.getCurrentScore(); 2413 nai.networkMisc.acceptUnvalidated = accept; 2414 rematchAllNetworksAndRequests(nai, oldScore); 2415 sendUpdatedScoreToFactories(nai); 2416 } 2417 2418 if (always) { 2419 nai.asyncChannel.sendMessage( 2420 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2421 } 2422 2423 if (!accept) { 2424 // Tell the NetworkAgent to not automatically reconnect to the network. 2425 nai.asyncChannel.sendMessage(NetworkAgent.CMD_PREVENT_AUTOMATIC_RECONNECT); 2426 // Teardown the nework. 2427 teardownUnneededNetwork(nai); 2428 } 2429 2430 } 2431 2432 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2433 if (VDBG) log("scheduleUnvalidatedPrompt " + nai.network); 2434 mHandler.sendMessageDelayed( 2435 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2436 PROMPT_UNVALIDATED_DELAY_MS); 2437 } 2438 2439 private void handlePromptUnvalidated(Network network) { 2440 if (VDBG) log("handlePromptUnvalidated " + network); 2441 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2442 2443 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2444 // we haven't already been told to switch to it regardless of whether it validated or not. 2445 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2446 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2447 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2448 return; 2449 } 2450 2451 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2452 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2453 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2454 intent.setClassName("com.android.settings", 2455 "com.android.settings.wifi.WifiNoInternetDialog"); 2456 2457 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2458 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2459 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2460 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent, true); 2461 } 2462 2463 private class InternalHandler extends Handler { 2464 public InternalHandler(Looper looper) { 2465 super(looper); 2466 } 2467 2468 @Override 2469 public void handleMessage(Message msg) { 2470 switch (msg.what) { 2471 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2472 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2473 String causedBy = null; 2474 synchronized (ConnectivityService.this) { 2475 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2476 mNetTransitionWakeLock.isHeld()) { 2477 mNetTransitionWakeLock.release(); 2478 causedBy = mNetTransitionWakeLockCausedBy; 2479 } else { 2480 break; 2481 } 2482 } 2483 if (VDBG) { 2484 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2485 log("Failed to find a new network - expiring NetTransition Wakelock"); 2486 } else { 2487 log("NetTransition Wakelock (" + 2488 (causedBy == null ? "unknown" : causedBy) + 2489 " cleared because we found a replacement network"); 2490 } 2491 } 2492 break; 2493 } 2494 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2495 handleDeprecatedGlobalHttpProxy(); 2496 break; 2497 } 2498 case EVENT_PROXY_HAS_CHANGED: { 2499 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2500 break; 2501 } 2502 case EVENT_REGISTER_NETWORK_FACTORY: { 2503 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2504 break; 2505 } 2506 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2507 handleUnregisterNetworkFactory((Messenger)msg.obj); 2508 break; 2509 } 2510 case EVENT_REGISTER_NETWORK_AGENT: { 2511 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2512 break; 2513 } 2514 case EVENT_REGISTER_NETWORK_REQUEST: 2515 case EVENT_REGISTER_NETWORK_LISTENER: { 2516 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2517 break; 2518 } 2519 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2520 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2521 handleRegisterNetworkRequestWithIntent(msg); 2522 break; 2523 } 2524 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2525 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2526 break; 2527 } 2528 case EVENT_RELEASE_NETWORK_REQUEST: { 2529 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2530 break; 2531 } 2532 case EVENT_SET_ACCEPT_UNVALIDATED: { 2533 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2534 break; 2535 } 2536 case EVENT_PROMPT_UNVALIDATED: { 2537 handlePromptUnvalidated((Network) msg.obj); 2538 break; 2539 } 2540 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2541 handleMobileDataAlwaysOn(); 2542 break; 2543 } 2544 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2545 case NetworkAgent.CMD_START_PACKET_KEEPALIVE: { 2546 mKeepaliveTracker.handleStartKeepalive(msg); 2547 break; 2548 } 2549 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2550 case NetworkAgent.CMD_STOP_PACKET_KEEPALIVE: { 2551 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork((Network) msg.obj); 2552 int slot = msg.arg1; 2553 int reason = msg.arg2; 2554 mKeepaliveTracker.handleStopKeepalive(nai, slot, reason); 2555 break; 2556 } 2557 case EVENT_SYSTEM_READY: { 2558 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2559 nai.networkMonitor.systemReady = true; 2560 } 2561 break; 2562 } 2563 } 2564 } 2565 } 2566 2567 // javadoc from interface 2568 public int tether(String iface) { 2569 ConnectivityManager.enforceTetherChangePermission(mContext); 2570 if (isTetheringSupported()) { 2571 return mTethering.tether(iface); 2572 } else { 2573 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2574 } 2575 } 2576 2577 // javadoc from interface 2578 public int untether(String iface) { 2579 ConnectivityManager.enforceTetherChangePermission(mContext); 2580 2581 if (isTetheringSupported()) { 2582 return mTethering.untether(iface); 2583 } else { 2584 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2585 } 2586 } 2587 2588 // javadoc from interface 2589 public int getLastTetherError(String iface) { 2590 enforceTetherAccessPermission(); 2591 2592 if (isTetheringSupported()) { 2593 return mTethering.getLastTetherError(iface); 2594 } else { 2595 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2596 } 2597 } 2598 2599 // TODO - proper iface API for selection by property, inspection, etc 2600 public String[] getTetherableUsbRegexs() { 2601 enforceTetherAccessPermission(); 2602 if (isTetheringSupported()) { 2603 return mTethering.getTetherableUsbRegexs(); 2604 } else { 2605 return new String[0]; 2606 } 2607 } 2608 2609 public String[] getTetherableWifiRegexs() { 2610 enforceTetherAccessPermission(); 2611 if (isTetheringSupported()) { 2612 return mTethering.getTetherableWifiRegexs(); 2613 } else { 2614 return new String[0]; 2615 } 2616 } 2617 2618 public String[] getTetherableBluetoothRegexs() { 2619 enforceTetherAccessPermission(); 2620 if (isTetheringSupported()) { 2621 return mTethering.getTetherableBluetoothRegexs(); 2622 } else { 2623 return new String[0]; 2624 } 2625 } 2626 2627 public int setUsbTethering(boolean enable) { 2628 ConnectivityManager.enforceTetherChangePermission(mContext); 2629 if (isTetheringSupported()) { 2630 return mTethering.setUsbTethering(enable); 2631 } else { 2632 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2633 } 2634 } 2635 2636 // TODO - move iface listing, queries, etc to new module 2637 // javadoc from interface 2638 public String[] getTetherableIfaces() { 2639 enforceTetherAccessPermission(); 2640 return mTethering.getTetherableIfaces(); 2641 } 2642 2643 public String[] getTetheredIfaces() { 2644 enforceTetherAccessPermission(); 2645 return mTethering.getTetheredIfaces(); 2646 } 2647 2648 public String[] getTetheringErroredIfaces() { 2649 enforceTetherAccessPermission(); 2650 return mTethering.getErroredIfaces(); 2651 } 2652 2653 public String[] getTetheredDhcpRanges() { 2654 enforceConnectivityInternalPermission(); 2655 return mTethering.getTetheredDhcpRanges(); 2656 } 2657 2658 // if ro.tether.denied = true we default to no tethering 2659 // gservices could set the secure setting to 1 though to enable it on a build where it 2660 // had previously been turned off. 2661 @Override 2662 public boolean isTetheringSupported() { 2663 enforceTetherAccessPermission(); 2664 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2665 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2666 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2667 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2668 return tetherEnabledInSettings && mUserManager.isAdminUser() && 2669 ((mTethering.getTetherableUsbRegexs().length != 0 || 2670 mTethering.getTetherableWifiRegexs().length != 0 || 2671 mTethering.getTetherableBluetoothRegexs().length != 0) && 2672 mTethering.getUpstreamIfaceTypes().length != 0); 2673 } 2674 2675 @Override 2676 public void startTethering(int type, ResultReceiver receiver, 2677 boolean showProvisioningUi) { 2678 ConnectivityManager.enforceTetherChangePermission(mContext); 2679 if (!isTetheringSupported()) { 2680 receiver.send(ConnectivityManager.TETHER_ERROR_UNSUPPORTED, null); 2681 return; 2682 } 2683 mTethering.startTethering(type, receiver, showProvisioningUi); 2684 } 2685 2686 @Override 2687 public void stopTethering(int type) { 2688 ConnectivityManager.enforceTetherChangePermission(mContext); 2689 mTethering.stopTethering(type); 2690 } 2691 2692 // Called when we lose the default network and have no replacement yet. 2693 // This will automatically be cleared after X seconds or a new default network 2694 // becomes CONNECTED, whichever happens first. The timer is started by the 2695 // first caller and not restarted by subsequent callers. 2696 private void requestNetworkTransitionWakelock(String forWhom) { 2697 int serialNum = 0; 2698 synchronized (this) { 2699 if (mNetTransitionWakeLock.isHeld()) return; 2700 serialNum = ++mNetTransitionWakeLockSerialNumber; 2701 mNetTransitionWakeLock.acquire(); 2702 mNetTransitionWakeLockCausedBy = forWhom; 2703 } 2704 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2705 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2706 mNetTransitionWakeLockTimeout); 2707 return; 2708 } 2709 2710 // 100 percent is full good, 0 is full bad. 2711 public void reportInetCondition(int networkType, int percentage) { 2712 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2713 if (nai == null) return; 2714 reportNetworkConnectivity(nai.network, percentage > 50); 2715 } 2716 2717 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2718 enforceAccessPermission(); 2719 enforceInternetPermission(); 2720 2721 NetworkAgentInfo nai; 2722 if (network == null) { 2723 nai = getDefaultNetwork(); 2724 } else { 2725 nai = getNetworkAgentInfoForNetwork(network); 2726 } 2727 if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || 2728 nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { 2729 return; 2730 } 2731 // Revalidate if the app report does not match our current validated state. 2732 if (hasConnectivity == nai.lastValidated) return; 2733 final int uid = Binder.getCallingUid(); 2734 if (DBG) { 2735 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2736 ") by " + uid); 2737 } 2738 synchronized (nai) { 2739 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2740 // which isn't meant to work on uncreated networks. 2741 if (!nai.created) return; 2742 2743 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2744 2745 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2746 } 2747 } 2748 2749 private ProxyInfo getDefaultProxy() { 2750 // this information is already available as a world read/writable jvm property 2751 // so this API change wouldn't have a benifit. It also breaks the passing 2752 // of proxy info to all the JVMs. 2753 // enforceAccessPermission(); 2754 synchronized (mProxyLock) { 2755 ProxyInfo ret = mGlobalProxy; 2756 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2757 return ret; 2758 } 2759 } 2760 2761 public ProxyInfo getProxyForNetwork(Network network) { 2762 if (network == null) return getDefaultProxy(); 2763 final ProxyInfo globalProxy = getGlobalProxy(); 2764 if (globalProxy != null) return globalProxy; 2765 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2766 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2767 // caller may not have. 2768 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2769 if (nai == null) return null; 2770 synchronized (nai) { 2771 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2772 if (proxyInfo == null) return null; 2773 return new ProxyInfo(proxyInfo); 2774 } 2775 } 2776 2777 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2778 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2779 // proxy is null then there is no proxy in place). 2780 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2781 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2782 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2783 proxy = null; 2784 } 2785 return proxy; 2786 } 2787 2788 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2789 // better for determining if a new proxy broadcast is necessary: 2790 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2791 // avoid unnecessary broadcasts. 2792 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2793 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2794 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2795 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2796 // all set. 2797 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2798 a = canonicalizeProxyInfo(a); 2799 b = canonicalizeProxyInfo(b); 2800 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2801 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2802 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2803 } 2804 2805 public void setGlobalProxy(ProxyInfo proxyProperties) { 2806 enforceConnectivityInternalPermission(); 2807 2808 synchronized (mProxyLock) { 2809 if (proxyProperties == mGlobalProxy) return; 2810 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2811 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2812 2813 String host = ""; 2814 int port = 0; 2815 String exclList = ""; 2816 String pacFileUrl = ""; 2817 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2818 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2819 if (!proxyProperties.isValid()) { 2820 if (DBG) 2821 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2822 return; 2823 } 2824 mGlobalProxy = new ProxyInfo(proxyProperties); 2825 host = mGlobalProxy.getHost(); 2826 port = mGlobalProxy.getPort(); 2827 exclList = mGlobalProxy.getExclusionListAsString(); 2828 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2829 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2830 } 2831 } else { 2832 mGlobalProxy = null; 2833 } 2834 ContentResolver res = mContext.getContentResolver(); 2835 final long token = Binder.clearCallingIdentity(); 2836 try { 2837 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2838 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2839 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2840 exclList); 2841 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2842 } finally { 2843 Binder.restoreCallingIdentity(token); 2844 } 2845 2846 if (mGlobalProxy == null) { 2847 proxyProperties = mDefaultProxy; 2848 } 2849 sendProxyBroadcast(proxyProperties); 2850 } 2851 } 2852 2853 private void loadGlobalProxy() { 2854 ContentResolver res = mContext.getContentResolver(); 2855 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2856 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2857 String exclList = Settings.Global.getString(res, 2858 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2859 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2860 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2861 ProxyInfo proxyProperties; 2862 if (!TextUtils.isEmpty(pacFileUrl)) { 2863 proxyProperties = new ProxyInfo(pacFileUrl); 2864 } else { 2865 proxyProperties = new ProxyInfo(host, port, exclList); 2866 } 2867 if (!proxyProperties.isValid()) { 2868 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2869 return; 2870 } 2871 2872 synchronized (mProxyLock) { 2873 mGlobalProxy = proxyProperties; 2874 } 2875 } 2876 } 2877 2878 public ProxyInfo getGlobalProxy() { 2879 // this information is already available as a world read/writable jvm property 2880 // so this API change wouldn't have a benifit. It also breaks the passing 2881 // of proxy info to all the JVMs. 2882 // enforceAccessPermission(); 2883 synchronized (mProxyLock) { 2884 return mGlobalProxy; 2885 } 2886 } 2887 2888 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2889 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2890 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2891 proxy = null; 2892 } 2893 synchronized (mProxyLock) { 2894 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2895 if (mDefaultProxy == proxy) return; // catches repeated nulls 2896 if (proxy != null && !proxy.isValid()) { 2897 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2898 return; 2899 } 2900 2901 // This call could be coming from the PacManager, containing the port of the local 2902 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2903 // global (to get the correct local port), and send a broadcast. 2904 // TODO: Switch PacManager to have its own message to send back rather than 2905 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2906 if ((mGlobalProxy != null) && (proxy != null) 2907 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2908 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2909 mGlobalProxy = proxy; 2910 sendProxyBroadcast(mGlobalProxy); 2911 return; 2912 } 2913 mDefaultProxy = proxy; 2914 2915 if (mGlobalProxy != null) return; 2916 if (!mDefaultProxyDisabled) { 2917 sendProxyBroadcast(proxy); 2918 } 2919 } 2920 } 2921 2922 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2923 // This method gets called when any network changes proxy, but the broadcast only ever contains 2924 // the default proxy (even if it hasn't changed). 2925 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2926 // world where an app might be bound to a non-default network. 2927 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2928 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2929 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2930 2931 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2932 sendProxyBroadcast(getDefaultProxy()); 2933 } 2934 } 2935 2936 private void handleDeprecatedGlobalHttpProxy() { 2937 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2938 Settings.Global.HTTP_PROXY); 2939 if (!TextUtils.isEmpty(proxy)) { 2940 String data[] = proxy.split(":"); 2941 if (data.length == 0) { 2942 return; 2943 } 2944 2945 String proxyHost = data[0]; 2946 int proxyPort = 8080; 2947 if (data.length > 1) { 2948 try { 2949 proxyPort = Integer.parseInt(data[1]); 2950 } catch (NumberFormatException e) { 2951 return; 2952 } 2953 } 2954 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2955 setGlobalProxy(p); 2956 } 2957 } 2958 2959 private void sendProxyBroadcast(ProxyInfo proxy) { 2960 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2961 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2962 if (DBG) log("sending Proxy Broadcast for " + proxy); 2963 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2964 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2965 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2966 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2967 final long ident = Binder.clearCallingIdentity(); 2968 try { 2969 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2970 } finally { 2971 Binder.restoreCallingIdentity(ident); 2972 } 2973 } 2974 2975 private static class SettingsObserver extends ContentObserver { 2976 final private HashMap<Uri, Integer> mUriEventMap; 2977 final private Context mContext; 2978 final private Handler mHandler; 2979 2980 SettingsObserver(Context context, Handler handler) { 2981 super(null); 2982 mUriEventMap = new HashMap<Uri, Integer>(); 2983 mContext = context; 2984 mHandler = handler; 2985 } 2986 2987 void observe(Uri uri, int what) { 2988 mUriEventMap.put(uri, what); 2989 final ContentResolver resolver = mContext.getContentResolver(); 2990 resolver.registerContentObserver(uri, false, this); 2991 } 2992 2993 @Override 2994 public void onChange(boolean selfChange) { 2995 Slog.wtf(TAG, "Should never be reached."); 2996 } 2997 2998 @Override 2999 public void onChange(boolean selfChange, Uri uri) { 3000 final Integer what = mUriEventMap.get(uri); 3001 if (what != null) { 3002 mHandler.obtainMessage(what.intValue()).sendToTarget(); 3003 } else { 3004 loge("No matching event to send for URI=" + uri); 3005 } 3006 } 3007 } 3008 3009 private static void log(String s) { 3010 Slog.d(TAG, s); 3011 } 3012 3013 private static void loge(String s) { 3014 Slog.e(TAG, s); 3015 } 3016 3017 private static <T> T checkNotNull(T value, String message) { 3018 if (value == null) { 3019 throw new NullPointerException(message); 3020 } 3021 return value; 3022 } 3023 3024 /** 3025 * Prepare for a VPN application. 3026 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3027 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3028 * 3029 * @param oldPackage Package name of the application which currently controls VPN, which will 3030 * be replaced. If there is no such application, this should should either be 3031 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3032 * @param newPackage Package name of the application which should gain control of VPN, or 3033 * {@code null} to disable. 3034 * @param userId User for whom to prepare the new VPN. 3035 * 3036 * @hide 3037 */ 3038 @Override 3039 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3040 int userId) { 3041 enforceCrossUserPermission(userId); 3042 throwIfLockdownEnabled(); 3043 3044 synchronized(mVpns) { 3045 Vpn vpn = mVpns.get(userId); 3046 if (vpn != null) { 3047 return vpn.prepare(oldPackage, newPackage); 3048 } else { 3049 return false; 3050 } 3051 } 3052 } 3053 3054 /** 3055 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3056 * This method is used by system-privileged apps. 3057 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3058 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3059 * 3060 * @param packageName The package for which authorization state should change. 3061 * @param userId User for whom {@code packageName} is installed. 3062 * @param authorized {@code true} if this app should be able to start a VPN connection without 3063 * explicit user approval, {@code false} if not. 3064 * 3065 * @hide 3066 */ 3067 @Override 3068 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3069 enforceCrossUserPermission(userId); 3070 3071 synchronized(mVpns) { 3072 Vpn vpn = mVpns.get(userId); 3073 if (vpn != null) { 3074 vpn.setPackageAuthorization(packageName, authorized); 3075 } 3076 } 3077 } 3078 3079 /** 3080 * Configure a TUN interface and return its file descriptor. Parameters 3081 * are encoded and opaque to this class. This method is used by VpnBuilder 3082 * and not available in ConnectivityManager. Permissions are checked in 3083 * Vpn class. 3084 * @hide 3085 */ 3086 @Override 3087 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3088 throwIfLockdownEnabled(); 3089 int user = UserHandle.getUserId(Binder.getCallingUid()); 3090 synchronized(mVpns) { 3091 return mVpns.get(user).establish(config); 3092 } 3093 } 3094 3095 /** 3096 * Start legacy VPN, controlling native daemons as needed. Creates a 3097 * secondary thread to perform connection work, returning quickly. 3098 */ 3099 @Override 3100 public void startLegacyVpn(VpnProfile profile) { 3101 throwIfLockdownEnabled(); 3102 final LinkProperties egress = getActiveLinkProperties(); 3103 if (egress == null) { 3104 throw new IllegalStateException("Missing active network connection"); 3105 } 3106 int user = UserHandle.getUserId(Binder.getCallingUid()); 3107 synchronized(mVpns) { 3108 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3109 } 3110 } 3111 3112 /** 3113 * Return the information of the ongoing legacy VPN. This method is used 3114 * by VpnSettings and not available in ConnectivityManager. Permissions 3115 * are checked in Vpn class. 3116 */ 3117 @Override 3118 public LegacyVpnInfo getLegacyVpnInfo(int userId) { 3119 enforceCrossUserPermission(userId); 3120 if (mLockdownEnabled) { 3121 return null; 3122 } 3123 3124 synchronized(mVpns) { 3125 return mVpns.get(userId).getLegacyVpnInfo(); 3126 } 3127 } 3128 3129 /** 3130 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3131 * and not available in ConnectivityManager. 3132 */ 3133 @Override 3134 public VpnInfo[] getAllVpnInfo() { 3135 enforceConnectivityInternalPermission(); 3136 if (mLockdownEnabled) { 3137 return new VpnInfo[0]; 3138 } 3139 3140 synchronized(mVpns) { 3141 List<VpnInfo> infoList = new ArrayList<>(); 3142 for (int i = 0; i < mVpns.size(); i++) { 3143 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3144 if (info != null) { 3145 infoList.add(info); 3146 } 3147 } 3148 return infoList.toArray(new VpnInfo[infoList.size()]); 3149 } 3150 } 3151 3152 /** 3153 * @return VPN information for accounting, or null if we can't retrieve all required 3154 * information, e.g primary underlying iface. 3155 */ 3156 @Nullable 3157 private VpnInfo createVpnInfo(Vpn vpn) { 3158 VpnInfo info = vpn.getVpnInfo(); 3159 if (info == null) { 3160 return null; 3161 } 3162 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3163 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3164 // the underlyingNetworks list. 3165 if (underlyingNetworks == null) { 3166 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3167 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3168 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3169 } 3170 } else if (underlyingNetworks.length > 0) { 3171 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3172 if (linkProperties != null) { 3173 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3174 } 3175 } 3176 return info.primaryUnderlyingIface == null ? null : info; 3177 } 3178 3179 /** 3180 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3181 * VpnDialogs and not available in ConnectivityManager. 3182 * Permissions are checked in Vpn class. 3183 * @hide 3184 */ 3185 @Override 3186 public VpnConfig getVpnConfig(int userId) { 3187 enforceCrossUserPermission(userId); 3188 synchronized(mVpns) { 3189 Vpn vpn = mVpns.get(userId); 3190 if (vpn != null) { 3191 return vpn.getVpnConfig(); 3192 } else { 3193 return null; 3194 } 3195 } 3196 } 3197 3198 @Override 3199 public boolean updateLockdownVpn() { 3200 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3201 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3202 return false; 3203 } 3204 3205 // Tear down existing lockdown if profile was removed 3206 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3207 if (mLockdownEnabled) { 3208 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3209 final VpnProfile profile = VpnProfile.decode( 3210 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3211 if (profile == null) { 3212 Slog.e(TAG, "Lockdown VPN configured invalid profile " + profileName); 3213 setLockdownTracker(null); 3214 return true; 3215 } 3216 int user = UserHandle.getUserId(Binder.getCallingUid()); 3217 synchronized(mVpns) { 3218 Vpn vpn = mVpns.get(user); 3219 if (vpn == null) { 3220 Slog.w(TAG, "VPN for user " + user + " not ready yet. Skipping lockdown"); 3221 return false; 3222 } 3223 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, vpn, profile)); 3224 } 3225 } else { 3226 setLockdownTracker(null); 3227 } 3228 3229 return true; 3230 } 3231 3232 /** 3233 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3234 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3235 */ 3236 private void setLockdownTracker(LockdownVpnTracker tracker) { 3237 // Shutdown any existing tracker 3238 final LockdownVpnTracker existing = mLockdownTracker; 3239 mLockdownTracker = null; 3240 if (existing != null) { 3241 existing.shutdown(); 3242 } 3243 3244 try { 3245 if (tracker != null) { 3246 mNetd.setFirewallEnabled(true); 3247 mNetd.setFirewallInterfaceRule("lo", true); 3248 mLockdownTracker = tracker; 3249 mLockdownTracker.init(); 3250 } else { 3251 mNetd.setFirewallEnabled(false); 3252 } 3253 } catch (RemoteException e) { 3254 // ignored; NMS lives inside system_server 3255 } 3256 } 3257 3258 private void throwIfLockdownEnabled() { 3259 if (mLockdownEnabled) { 3260 throw new IllegalStateException("Unavailable in lockdown mode"); 3261 } 3262 } 3263 3264 /** 3265 * Sets up or tears down the always-on VPN for user {@param user} as appropriate. 3266 * 3267 * @return {@code false} in case of errors; {@code true} otherwise. 3268 */ 3269 private boolean updateAlwaysOnVpn(int user) { 3270 final String lockdownPackage = getAlwaysOnVpnPackage(user); 3271 if (lockdownPackage == null) { 3272 return true; 3273 } 3274 3275 // Create an intent to start the VPN service declared in the app's manifest. 3276 Intent serviceIntent = new Intent(VpnConfig.SERVICE_INTERFACE); 3277 serviceIntent.setPackage(lockdownPackage); 3278 3279 try { 3280 return mContext.startServiceAsUser(serviceIntent, UserHandle.of(user)) != null; 3281 } catch (RuntimeException e) { 3282 return false; 3283 } 3284 } 3285 3286 @Override 3287 public boolean setAlwaysOnVpnPackage(int userId, String packageName) { 3288 enforceConnectivityInternalPermission(); 3289 enforceCrossUserPermission(userId); 3290 3291 // Can't set always-on VPN if legacy VPN is already in lockdown mode. 3292 if (LockdownVpnTracker.isEnabled()) { 3293 return false; 3294 } 3295 3296 // If the current VPN package is the same as the new one, this is a no-op 3297 final String oldPackage = getAlwaysOnVpnPackage(userId); 3298 if (TextUtils.equals(oldPackage, packageName)) { 3299 return true; 3300 } 3301 3302 synchronized (mVpns) { 3303 Vpn vpn = mVpns.get(userId); 3304 if (vpn == null) { 3305 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3306 return false; 3307 } 3308 if (!vpn.setAlwaysOnPackage(packageName)) { 3309 return false; 3310 } 3311 if (!updateAlwaysOnVpn(userId)) { 3312 vpn.setAlwaysOnPackage(null); 3313 return false; 3314 } 3315 } 3316 return true; 3317 } 3318 3319 @Override 3320 public String getAlwaysOnVpnPackage(int userId) { 3321 enforceConnectivityInternalPermission(); 3322 enforceCrossUserPermission(userId); 3323 3324 synchronized (mVpns) { 3325 Vpn vpn = mVpns.get(userId); 3326 if (vpn == null) { 3327 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3328 return null; 3329 } 3330 return vpn.getAlwaysOnPackage(); 3331 } 3332 } 3333 3334 @Override 3335 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3336 // TODO: Remove? Any reason to trigger a provisioning check? 3337 return -1; 3338 } 3339 3340 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3341 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3342 3343 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3344 Intent intent = new Intent(action); 3345 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3346 // Concatenate the range of types onto the range of NetIDs. 3347 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3348 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3349 networkType, null, pendingIntent, false); 3350 } 3351 3352 /** 3353 * Show or hide network provisioning notifications. 3354 * 3355 * We use notifications for two purposes: to notify that a network requires sign in 3356 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3357 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3358 * particular network we can display the notification type that was most recently requested. 3359 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3360 * might first display NO_INTERNET, and then when the captive portal check completes, display 3361 * SIGN_IN. 3362 * 3363 * @param id an identifier that uniquely identifies this notification. This must match 3364 * between show and hide calls. We use the NetID value but for legacy callers 3365 * we concatenate the range of types with the range of NetIDs. 3366 */ 3367 private void setProvNotificationVisibleIntent(boolean visible, int id, 3368 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent, 3369 boolean highPriority) { 3370 if (VDBG || (DBG && visible)) { 3371 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3372 + " networkType=" + getNetworkTypeName(networkType) 3373 + " extraInfo=" + extraInfo + " highPriority=" + highPriority); 3374 } 3375 3376 Resources r = Resources.getSystem(); 3377 NotificationManager notificationManager = (NotificationManager) mContext 3378 .getSystemService(Context.NOTIFICATION_SERVICE); 3379 3380 if (visible) { 3381 CharSequence title; 3382 CharSequence details; 3383 int icon; 3384 if (notifyType == NotificationType.NO_INTERNET && 3385 networkType == ConnectivityManager.TYPE_WIFI) { 3386 title = r.getString(R.string.wifi_no_internet, 0); 3387 details = r.getString(R.string.wifi_no_internet_detailed); 3388 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3389 } else if (notifyType == NotificationType.SIGN_IN) { 3390 switch (networkType) { 3391 case ConnectivityManager.TYPE_WIFI: 3392 title = r.getString(R.string.wifi_available_sign_in, 0); 3393 details = r.getString(R.string.network_available_sign_in_detailed, 3394 extraInfo); 3395 icon = R.drawable.stat_notify_wifi_in_range; 3396 break; 3397 case ConnectivityManager.TYPE_MOBILE: 3398 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3399 title = r.getString(R.string.network_available_sign_in, 0); 3400 // TODO: Change this to pull from NetworkInfo once a printable 3401 // name has been added to it 3402 details = mTelephonyManager.getNetworkOperatorName(); 3403 icon = R.drawable.stat_notify_rssi_in_range; 3404 break; 3405 default: 3406 title = r.getString(R.string.network_available_sign_in, 0); 3407 details = r.getString(R.string.network_available_sign_in_detailed, 3408 extraInfo); 3409 icon = R.drawable.stat_notify_rssi_in_range; 3410 break; 3411 } 3412 } else { 3413 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3414 + getNetworkTypeName(networkType)); 3415 return; 3416 } 3417 3418 Notification notification = new Notification.Builder(mContext) 3419 .setWhen(0) 3420 .setSmallIcon(icon) 3421 .setAutoCancel(true) 3422 .setTicker(title) 3423 .setColor(mContext.getColor( 3424 com.android.internal.R.color.system_notification_accent_color)) 3425 .setContentTitle(title) 3426 .setContentText(details) 3427 .setContentIntent(intent) 3428 .setLocalOnly(true) 3429 .setPriority(highPriority ? 3430 Notification.PRIORITY_HIGH : 3431 Notification.PRIORITY_DEFAULT) 3432 .setDefaults(highPriority ? Notification.DEFAULT_ALL : 0) 3433 .setOnlyAlertOnce(true) 3434 .build(); 3435 3436 try { 3437 notificationManager.notify(NOTIFICATION_ID, id, notification); 3438 } catch (NullPointerException npe) { 3439 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3440 npe.printStackTrace(); 3441 } 3442 } else { 3443 try { 3444 notificationManager.cancel(NOTIFICATION_ID, id); 3445 } catch (NullPointerException npe) { 3446 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3447 npe.printStackTrace(); 3448 } 3449 } 3450 } 3451 3452 /** Location to an updatable file listing carrier provisioning urls. 3453 * An example: 3454 * 3455 * <?xml version="1.0" encoding="utf-8"?> 3456 * <provisioningUrls> 3457 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3458 * </provisioningUrls> 3459 */ 3460 private static final String PROVISIONING_URL_PATH = 3461 "/data/misc/radio/provisioning_urls.xml"; 3462 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3463 3464 /** XML tag for root element. */ 3465 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3466 /** XML tag for individual url */ 3467 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3468 /** XML attribute for mcc */ 3469 private static final String ATTR_MCC = "mcc"; 3470 /** XML attribute for mnc */ 3471 private static final String ATTR_MNC = "mnc"; 3472 3473 private String getProvisioningUrlBaseFromFile() { 3474 FileReader fileReader = null; 3475 XmlPullParser parser = null; 3476 Configuration config = mContext.getResources().getConfiguration(); 3477 3478 try { 3479 fileReader = new FileReader(mProvisioningUrlFile); 3480 parser = Xml.newPullParser(); 3481 parser.setInput(fileReader); 3482 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3483 3484 while (true) { 3485 XmlUtils.nextElement(parser); 3486 3487 String element = parser.getName(); 3488 if (element == null) break; 3489 3490 if (element.equals(TAG_PROVISIONING_URL)) { 3491 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3492 try { 3493 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3494 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3495 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3496 parser.next(); 3497 if (parser.getEventType() == XmlPullParser.TEXT) { 3498 return parser.getText(); 3499 } 3500 } 3501 } 3502 } catch (NumberFormatException e) { 3503 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3504 } 3505 } 3506 } 3507 return null; 3508 } catch (FileNotFoundException e) { 3509 loge("Carrier Provisioning Urls file not found"); 3510 } catch (XmlPullParserException e) { 3511 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3512 } catch (IOException e) { 3513 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3514 } finally { 3515 if (fileReader != null) { 3516 try { 3517 fileReader.close(); 3518 } catch (IOException e) {} 3519 } 3520 } 3521 return null; 3522 } 3523 3524 @Override 3525 public String getMobileProvisioningUrl() { 3526 enforceConnectivityInternalPermission(); 3527 String url = getProvisioningUrlBaseFromFile(); 3528 if (TextUtils.isEmpty(url)) { 3529 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3530 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3531 } else { 3532 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3533 } 3534 // populate the iccid, imei and phone number in the provisioning url. 3535 if (!TextUtils.isEmpty(url)) { 3536 String phoneNumber = mTelephonyManager.getLine1Number(); 3537 if (TextUtils.isEmpty(phoneNumber)) { 3538 phoneNumber = "0000000000"; 3539 } 3540 url = String.format(url, 3541 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3542 mTelephonyManager.getDeviceId() /* IMEI */, 3543 phoneNumber /* Phone numer */); 3544 } 3545 3546 return url; 3547 } 3548 3549 @Override 3550 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3551 String action) { 3552 enforceConnectivityInternalPermission(); 3553 final long ident = Binder.clearCallingIdentity(); 3554 try { 3555 setProvNotificationVisible(visible, networkType, action); 3556 } finally { 3557 Binder.restoreCallingIdentity(ident); 3558 } 3559 } 3560 3561 @Override 3562 public void setAirplaneMode(boolean enable) { 3563 enforceConnectivityInternalPermission(); 3564 final long ident = Binder.clearCallingIdentity(); 3565 try { 3566 final ContentResolver cr = mContext.getContentResolver(); 3567 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3568 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3569 intent.putExtra("state", enable); 3570 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3571 } finally { 3572 Binder.restoreCallingIdentity(ident); 3573 } 3574 } 3575 3576 private void onUserStart(int userId) { 3577 synchronized(mVpns) { 3578 Vpn userVpn = mVpns.get(userId); 3579 if (userVpn != null) { 3580 loge("Starting user already has a VPN"); 3581 return; 3582 } 3583 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3584 mVpns.put(userId, userVpn); 3585 } 3586 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3587 updateLockdownVpn(); 3588 } else { 3589 updateAlwaysOnVpn(userId); 3590 } 3591 } 3592 3593 private void onUserStop(int userId) { 3594 synchronized(mVpns) { 3595 Vpn userVpn = mVpns.get(userId); 3596 if (userVpn == null) { 3597 loge("Stopping user has no VPN"); 3598 return; 3599 } 3600 mVpns.delete(userId); 3601 } 3602 } 3603 3604 private void onUserAdded(int userId) { 3605 synchronized(mVpns) { 3606 final int vpnsSize = mVpns.size(); 3607 for (int i = 0; i < vpnsSize; i++) { 3608 Vpn vpn = mVpns.valueAt(i); 3609 vpn.onUserAdded(userId); 3610 } 3611 } 3612 } 3613 3614 private void onUserRemoved(int userId) { 3615 synchronized(mVpns) { 3616 final int vpnsSize = mVpns.size(); 3617 for (int i = 0; i < vpnsSize; i++) { 3618 Vpn vpn = mVpns.valueAt(i); 3619 vpn.onUserRemoved(userId); 3620 } 3621 } 3622 } 3623 3624 private void onUserUnlocked(int userId) { 3625 // User present may be sent because of an unlock, which might mean an unlocked keystore. 3626 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3627 updateLockdownVpn(); 3628 } else { 3629 updateAlwaysOnVpn(userId); 3630 } 3631 } 3632 3633 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3634 @Override 3635 public void onReceive(Context context, Intent intent) { 3636 final String action = intent.getAction(); 3637 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3638 if (userId == UserHandle.USER_NULL) return; 3639 3640 if (Intent.ACTION_USER_STARTING.equals(action)) { 3641 onUserStart(userId); 3642 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3643 onUserStop(userId); 3644 } else if (Intent.ACTION_USER_ADDED.equals(action)) { 3645 onUserAdded(userId); 3646 } else if (Intent.ACTION_USER_REMOVED.equals(action)) { 3647 onUserRemoved(userId); 3648 } else if (Intent.ACTION_USER_UNLOCKED.equals(action)) { 3649 onUserUnlocked(userId); 3650 } 3651 } 3652 }; 3653 3654 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3655 new HashMap<Messenger, NetworkFactoryInfo>(); 3656 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3657 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3658 3659 private static final int MAX_NETWORK_REQUESTS_PER_UID = 100; 3660 // Map from UID to number of NetworkRequests that UID has filed. 3661 @GuardedBy("mUidToNetworkRequestCount") 3662 private final SparseIntArray mUidToNetworkRequestCount = new SparseIntArray(); 3663 3664 private static class NetworkFactoryInfo { 3665 public final String name; 3666 public final Messenger messenger; 3667 public final AsyncChannel asyncChannel; 3668 3669 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3670 this.name = name; 3671 this.messenger = messenger; 3672 this.asyncChannel = asyncChannel; 3673 } 3674 } 3675 3676 /** 3677 * A NetworkRequest as registered by an application can be one of three 3678 * types: 3679 * 3680 * - "listen", for which the framework will issue callbacks about any 3681 * and all networks that match the specified NetworkCapabilities, 3682 * 3683 * - "request", capable of causing a specific network to be created 3684 * first (e.g. a telephony DUN request), the framework will issue 3685 * callbacks about the single, highest scoring current network 3686 * (if any) that matches the specified NetworkCapabilities, or 3687 * 3688 * - "track the default network", a hybrid of the two designed such 3689 * that the framework will issue callbacks for the single, highest 3690 * scoring current network (if any) that matches the capabilities of 3691 * the default Internet request (mDefaultRequest), but which cannot 3692 * cause the framework to either create or retain the existence of 3693 * any specific network. 3694 * 3695 */ 3696 private static enum NetworkRequestType { 3697 LISTEN, 3698 TRACK_DEFAULT, 3699 REQUEST 3700 }; 3701 3702 /** 3703 * Tracks info about the requester. 3704 * Also used to notice when the calling process dies so we can self-expire 3705 */ 3706 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3707 final NetworkRequest request; 3708 final PendingIntent mPendingIntent; 3709 boolean mPendingIntentSent; 3710 private final IBinder mBinder; 3711 final int mPid; 3712 final int mUid; 3713 final Messenger messenger; 3714 private final NetworkRequestType mType; 3715 3716 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, NetworkRequestType type) { 3717 request = r; 3718 mPendingIntent = pi; 3719 messenger = null; 3720 mBinder = null; 3721 mPid = getCallingPid(); 3722 mUid = getCallingUid(); 3723 mType = type; 3724 enforceRequestCountLimit(); 3725 } 3726 3727 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, NetworkRequestType type) { 3728 super(); 3729 messenger = m; 3730 request = r; 3731 mBinder = binder; 3732 mPid = getCallingPid(); 3733 mUid = getCallingUid(); 3734 mType = type; 3735 mPendingIntent = null; 3736 enforceRequestCountLimit(); 3737 3738 try { 3739 mBinder.linkToDeath(this, 0); 3740 } catch (RemoteException e) { 3741 binderDied(); 3742 } 3743 } 3744 3745 private void enforceRequestCountLimit() { 3746 synchronized (mUidToNetworkRequestCount) { 3747 int networkRequests = mUidToNetworkRequestCount.get(mUid, 0) + 1; 3748 if (networkRequests >= MAX_NETWORK_REQUESTS_PER_UID) { 3749 throw new IllegalArgumentException("Too many NetworkRequests filed"); 3750 } 3751 mUidToNetworkRequestCount.put(mUid, networkRequests); 3752 } 3753 } 3754 3755 private String typeString() { 3756 switch (mType) { 3757 case LISTEN: return "Listen"; 3758 case REQUEST: return "Request"; 3759 case TRACK_DEFAULT: return "Track default"; 3760 default: 3761 return "unknown type"; 3762 } 3763 } 3764 3765 void unlinkDeathRecipient() { 3766 if (mBinder != null) { 3767 mBinder.unlinkToDeath(this, 0); 3768 } 3769 } 3770 3771 public void binderDied() { 3772 log("ConnectivityService NetworkRequestInfo binderDied(" + 3773 request + ", " + mBinder + ")"); 3774 releaseNetworkRequest(request); 3775 } 3776 3777 /** 3778 * Returns true iff. the contained NetworkRequest is one that: 3779 * 3780 * - should be associated with at most one satisfying network 3781 * at a time; 3782 * 3783 * - should cause a network to be kept up if it is the only network 3784 * which can satisfy the NetworkReqeust. 3785 * 3786 * For full detail of how isRequest() is used for pairing Networks with 3787 * NetworkRequests read rematchNetworkAndRequests(). 3788 * 3789 * TODO: Rename to something more properly descriptive. 3790 */ 3791 public boolean isRequest() { 3792 return (mType == NetworkRequestType.TRACK_DEFAULT) || 3793 (mType == NetworkRequestType.REQUEST); 3794 } 3795 3796 public String toString() { 3797 return typeString() + 3798 " from uid/pid:" + mUid + "/" + mPid + 3799 " for " + request + 3800 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3801 } 3802 } 3803 3804 private void ensureRequestableCapabilities(NetworkCapabilities networkCapabilities) { 3805 final String badCapability = networkCapabilities.describeFirstNonRequestableCapability(); 3806 if (badCapability != null) { 3807 throw new IllegalArgumentException("Cannot request network with " + badCapability); 3808 } 3809 } 3810 3811 private ArrayList<Integer> getSignalStrengthThresholds(NetworkAgentInfo nai) { 3812 final SortedSet<Integer> thresholds = new TreeSet(); 3813 synchronized (nai) { 3814 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3815 if (nri.request.networkCapabilities.hasSignalStrength() && 3816 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 3817 thresholds.add(nri.request.networkCapabilities.getSignalStrength()); 3818 } 3819 } 3820 } 3821 return new ArrayList<Integer>(thresholds); 3822 } 3823 3824 private void updateSignalStrengthThresholds( 3825 NetworkAgentInfo nai, String reason, NetworkRequest request) { 3826 ArrayList<Integer> thresholdsArray = getSignalStrengthThresholds(nai); 3827 Bundle thresholds = new Bundle(); 3828 thresholds.putIntegerArrayList("thresholds", thresholdsArray); 3829 3830 if (VDBG || (DBG && !"CONNECT".equals(reason))) { 3831 String detail; 3832 if (request != null && request.networkCapabilities.hasSignalStrength()) { 3833 detail = reason + " " + request.networkCapabilities.getSignalStrength(); 3834 } else { 3835 detail = reason; 3836 } 3837 log(String.format("updateSignalStrengthThresholds: %s, sending %s to %s", 3838 detail, Arrays.toString(thresholdsArray.toArray()), nai.name())); 3839 } 3840 3841 nai.asyncChannel.sendMessage( 3842 android.net.NetworkAgent.CMD_SET_SIGNAL_STRENGTH_THRESHOLDS, 3843 0, 0, thresholds); 3844 } 3845 3846 @Override 3847 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3848 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3849 final NetworkRequestType type = (networkCapabilities == null) 3850 ? NetworkRequestType.TRACK_DEFAULT 3851 : NetworkRequestType.REQUEST; 3852 // If the requested networkCapabilities is null, take them instead from 3853 // the default network request. This allows callers to keep track of 3854 // the system default network. 3855 if (type == NetworkRequestType.TRACK_DEFAULT) { 3856 networkCapabilities = new NetworkCapabilities(mDefaultRequest.networkCapabilities); 3857 enforceAccessPermission(); 3858 } else { 3859 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3860 enforceNetworkRequestPermissions(networkCapabilities); 3861 } 3862 enforceMeteredApnPolicy(networkCapabilities); 3863 ensureRequestableCapabilities(networkCapabilities); 3864 3865 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3866 throw new IllegalArgumentException("Bad timeout specified"); 3867 } 3868 3869 if (NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER 3870 .equals(networkCapabilities.getNetworkSpecifier())) { 3871 throw new IllegalArgumentException("Invalid network specifier - must not be '" 3872 + NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER + "'"); 3873 } 3874 3875 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3876 nextNetworkRequestId()); 3877 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, type); 3878 if (DBG) log("requestNetwork for " + nri); 3879 3880 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3881 if (timeoutMs > 0) { 3882 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3883 nri), timeoutMs); 3884 } 3885 return networkRequest; 3886 } 3887 3888 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3889 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3890 enforceConnectivityInternalPermission(); 3891 } else { 3892 enforceChangePermission(); 3893 } 3894 } 3895 3896 @Override 3897 public boolean requestBandwidthUpdate(Network network) { 3898 enforceAccessPermission(); 3899 NetworkAgentInfo nai = null; 3900 if (network == null) { 3901 return false; 3902 } 3903 synchronized (mNetworkForNetId) { 3904 nai = mNetworkForNetId.get(network.netId); 3905 } 3906 if (nai != null) { 3907 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3908 return true; 3909 } 3910 return false; 3911 } 3912 3913 3914 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3915 // if UID is restricted, don't allow them to bring up metered APNs 3916 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3917 final int uidRules; 3918 final int uid = Binder.getCallingUid(); 3919 synchronized(mRulesLock) { 3920 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3921 } 3922 if (uidRules != RULE_ALLOW_ALL) { 3923 // we could silently fail or we can filter the available nets to only give 3924 // them those they have access to. Chose the more useful 3925 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3926 } 3927 } 3928 } 3929 3930 @Override 3931 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3932 PendingIntent operation) { 3933 checkNotNull(operation, "PendingIntent cannot be null."); 3934 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3935 enforceNetworkRequestPermissions(networkCapabilities); 3936 enforceMeteredApnPolicy(networkCapabilities); 3937 ensureRequestableCapabilities(networkCapabilities); 3938 3939 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3940 nextNetworkRequestId()); 3941 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3942 NetworkRequestType.REQUEST); 3943 if (DBG) log("pendingRequest for " + nri); 3944 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3945 nri)); 3946 return networkRequest; 3947 } 3948 3949 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3950 mHandler.sendMessageDelayed( 3951 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3952 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3953 } 3954 3955 @Override 3956 public void releasePendingNetworkRequest(PendingIntent operation) { 3957 checkNotNull(operation, "PendingIntent cannot be null."); 3958 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3959 getCallingUid(), 0, operation)); 3960 } 3961 3962 // In order to implement the compatibility measure for pre-M apps that call 3963 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3964 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3965 // This ensures it has permission to do so. 3966 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3967 if (nc == null) { 3968 return false; 3969 } 3970 int[] transportTypes = nc.getTransportTypes(); 3971 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3972 return false; 3973 } 3974 try { 3975 mContext.enforceCallingOrSelfPermission( 3976 android.Manifest.permission.ACCESS_WIFI_STATE, 3977 "ConnectivityService"); 3978 } catch (SecurityException e) { 3979 return false; 3980 } 3981 return true; 3982 } 3983 3984 @Override 3985 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3986 Messenger messenger, IBinder binder) { 3987 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3988 enforceAccessPermission(); 3989 } 3990 3991 NetworkRequest networkRequest = new NetworkRequest( 3992 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3993 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3994 NetworkRequestType.LISTEN); 3995 if (VDBG) log("listenForNetwork for " + nri); 3996 3997 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3998 return networkRequest; 3999 } 4000 4001 @Override 4002 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 4003 PendingIntent operation) { 4004 checkNotNull(operation, "PendingIntent cannot be null."); 4005 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 4006 enforceAccessPermission(); 4007 } 4008 4009 NetworkRequest networkRequest = new NetworkRequest( 4010 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 4011 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 4012 NetworkRequestType.LISTEN); 4013 if (VDBG) log("pendingListenForNetwork for " + nri); 4014 4015 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4016 } 4017 4018 @Override 4019 public void releaseNetworkRequest(NetworkRequest networkRequest) { 4020 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 4021 0, networkRequest)); 4022 } 4023 4024 @Override 4025 public void registerNetworkFactory(Messenger messenger, String name) { 4026 enforceConnectivityInternalPermission(); 4027 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 4028 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 4029 } 4030 4031 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 4032 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 4033 mNetworkFactoryInfos.put(nfi.messenger, nfi); 4034 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 4035 } 4036 4037 @Override 4038 public void unregisterNetworkFactory(Messenger messenger) { 4039 enforceConnectivityInternalPermission(); 4040 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 4041 } 4042 4043 private void handleUnregisterNetworkFactory(Messenger messenger) { 4044 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 4045 if (nfi == null) { 4046 loge("Failed to find Messenger in unregisterNetworkFactory"); 4047 return; 4048 } 4049 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 4050 } 4051 4052 /** 4053 * NetworkAgentInfo supporting a request by requestId. 4054 * These have already been vetted (their Capabilities satisfy the request) 4055 * and the are the highest scored network available. 4056 * the are keyed off the Requests requestId. 4057 */ 4058 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 4059 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 4060 new SparseArray<NetworkAgentInfo>(); 4061 4062 // NOTE: Accessed on multiple threads, must be synchronized on itself. 4063 @GuardedBy("mNetworkForNetId") 4064 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 4065 new SparseArray<NetworkAgentInfo>(); 4066 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 4067 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 4068 // there may not be a strict 1:1 correlation between the two. 4069 @GuardedBy("mNetworkForNetId") 4070 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 4071 4072 // NetworkAgentInfo keyed off its connecting messenger 4073 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 4074 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 4075 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 4076 new HashMap<Messenger, NetworkAgentInfo>(); 4077 4078 @GuardedBy("mBlockedAppUids") 4079 private final HashSet<Integer> mBlockedAppUids = new HashSet(); 4080 4081 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 4082 private final NetworkRequest mDefaultRequest; 4083 4084 // Request used to optionally keep mobile data active even when higher 4085 // priority networks like Wi-Fi are active. 4086 private final NetworkRequest mDefaultMobileDataRequest; 4087 4088 private NetworkAgentInfo getDefaultNetwork() { 4089 return mNetworkForRequestId.get(mDefaultRequest.requestId); 4090 } 4091 4092 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 4093 return nai == getDefaultNetwork(); 4094 } 4095 4096 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 4097 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 4098 int currentScore, NetworkMisc networkMisc) { 4099 enforceConnectivityInternalPermission(); 4100 4101 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 4102 // satisfies mDefaultRequest. 4103 final NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 4104 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 4105 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 4106 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest, this); 4107 synchronized (this) { 4108 nai.networkMonitor.systemReady = mSystemReady; 4109 } 4110 addValidationLogs(nai.networkMonitor.getValidationLogs(), nai.network); 4111 if (DBG) log("registerNetworkAgent " + nai); 4112 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 4113 return nai.network.netId; 4114 } 4115 4116 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 4117 if (VDBG) log("Got NetworkAgent Messenger"); 4118 mNetworkAgentInfos.put(na.messenger, na); 4119 synchronized (mNetworkForNetId) { 4120 mNetworkForNetId.put(na.network.netId, na); 4121 } 4122 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 4123 NetworkInfo networkInfo = na.networkInfo; 4124 na.networkInfo = null; 4125 updateNetworkInfo(na, networkInfo); 4126 } 4127 4128 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 4129 LinkProperties newLp = networkAgent.linkProperties; 4130 int netId = networkAgent.network.netId; 4131 4132 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 4133 // we do anything else, make sure its LinkProperties are accurate. 4134 if (networkAgent.clatd != null) { 4135 networkAgent.clatd.fixupLinkProperties(oldLp); 4136 } 4137 4138 updateInterfaces(newLp, oldLp, netId); 4139 updateMtu(newLp, oldLp); 4140 // TODO - figure out what to do for clat 4141// for (LinkProperties lp : newLp.getStackedLinks()) { 4142// updateMtu(lp, null); 4143// } 4144 updateTcpBufferSizes(networkAgent); 4145 4146 updateRoutes(newLp, oldLp, netId); 4147 updateDnses(newLp, oldLp, netId); 4148 4149 updateClat(newLp, oldLp, networkAgent); 4150 if (isDefaultNetwork(networkAgent)) { 4151 handleApplyDefaultProxy(newLp.getHttpProxy()); 4152 } else { 4153 updateProxy(newLp, oldLp, networkAgent); 4154 } 4155 // TODO - move this check to cover the whole function 4156 if (!Objects.equals(newLp, oldLp)) { 4157 notifyIfacesChangedForNetworkStats(); 4158 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 4159 } 4160 4161 mKeepaliveTracker.handleCheckKeepalivesStillValid(networkAgent); 4162 } 4163 4164 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 4165 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 4166 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 4167 4168 if (!wasRunningClat && shouldRunClat) { 4169 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 4170 nai.clatd.start(); 4171 } else if (wasRunningClat && !shouldRunClat) { 4172 nai.clatd.stop(); 4173 } 4174 } 4175 4176 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 4177 CompareResult<String> interfaceDiff = new CompareResult<String>(); 4178 if (oldLp != null) { 4179 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 4180 } else if (newLp != null) { 4181 interfaceDiff.added = newLp.getAllInterfaceNames(); 4182 } 4183 for (String iface : interfaceDiff.added) { 4184 try { 4185 if (DBG) log("Adding iface " + iface + " to network " + netId); 4186 mNetd.addInterfaceToNetwork(iface, netId); 4187 } catch (Exception e) { 4188 loge("Exception adding interface: " + e); 4189 } 4190 } 4191 for (String iface : interfaceDiff.removed) { 4192 try { 4193 if (DBG) log("Removing iface " + iface + " from network " + netId); 4194 mNetd.removeInterfaceFromNetwork(iface, netId); 4195 } catch (Exception e) { 4196 loge("Exception removing interface: " + e); 4197 } 4198 } 4199 } 4200 4201 /** 4202 * Have netd update routes from oldLp to newLp. 4203 * @return true if routes changed between oldLp and newLp 4204 */ 4205 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 4206 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 4207 if (oldLp != null) { 4208 routeDiff = oldLp.compareAllRoutes(newLp); 4209 } else if (newLp != null) { 4210 routeDiff.added = newLp.getAllRoutes(); 4211 } 4212 4213 // add routes before removing old in case it helps with continuous connectivity 4214 4215 // do this twice, adding non-nexthop routes first, then routes they are dependent on 4216 for (RouteInfo route : routeDiff.added) { 4217 if (route.hasGateway()) continue; 4218 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4219 try { 4220 mNetd.addRoute(netId, route); 4221 } catch (Exception e) { 4222 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 4223 loge("Exception in addRoute for non-gateway: " + e); 4224 } 4225 } 4226 } 4227 for (RouteInfo route : routeDiff.added) { 4228 if (route.hasGateway() == false) continue; 4229 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4230 try { 4231 mNetd.addRoute(netId, route); 4232 } catch (Exception e) { 4233 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4234 loge("Exception in addRoute for gateway: " + e); 4235 } 4236 } 4237 } 4238 4239 for (RouteInfo route : routeDiff.removed) { 4240 if (VDBG) log("Removing Route [" + route + "] from network " + netId); 4241 try { 4242 mNetd.removeRoute(netId, route); 4243 } catch (Exception e) { 4244 loge("Exception in removeRoute: " + e); 4245 } 4246 } 4247 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4248 } 4249 4250 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId) { 4251 if (oldLp != null && newLp.isIdenticalDnses(oldLp)) { 4252 return; // no updating necessary 4253 } 4254 4255 Collection<InetAddress> dnses = newLp.getDnsServers(); 4256 if (DBG) log("Setting DNS servers for network " + netId + " to " + dnses); 4257 try { 4258 mNetd.setDnsConfigurationForNetwork( 4259 netId, NetworkUtils.makeStrings(dnses), newLp.getDomains()); 4260 } catch (Exception e) { 4261 loge("Exception in setDnsConfigurationForNetwork: " + e); 4262 } 4263 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 4264 if (defaultNai != null && defaultNai.network.netId == netId) { 4265 setDefaultDnsSystemProperties(dnses); 4266 } 4267 flushVmDnsCache(); 4268 } 4269 4270 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4271 int last = 0; 4272 for (InetAddress dns : dnses) { 4273 ++last; 4274 String key = "net.dns" + last; 4275 String value = dns.getHostAddress(); 4276 SystemProperties.set(key, value); 4277 } 4278 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4279 String key = "net.dns" + i; 4280 SystemProperties.set(key, ""); 4281 } 4282 mNumDnsEntries = last; 4283 } 4284 4285 /** 4286 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 4287 * augmented with any stateful capabilities implied from {@code networkAgent} 4288 * (e.g., validated status and captive portal status). 4289 * 4290 * @param nai the network having its capabilities updated. 4291 * @param networkCapabilities the new network capabilities. 4292 */ 4293 private void updateCapabilities(NetworkAgentInfo nai, NetworkCapabilities networkCapabilities) { 4294 // Don't modify caller's NetworkCapabilities. 4295 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4296 if (nai.lastValidated) { 4297 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4298 } else { 4299 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4300 } 4301 if (nai.lastCaptivePortalDetected) { 4302 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4303 } else { 4304 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4305 } 4306 if (!Objects.equals(nai.networkCapabilities, networkCapabilities)) { 4307 final int oldScore = nai.getCurrentScore(); 4308 if (nai.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) != 4309 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED)) { 4310 try { 4311 mNetd.setNetworkPermission(nai.network.netId, 4312 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) ? 4313 null : NetworkManagementService.PERMISSION_SYSTEM); 4314 } catch (RemoteException e) { 4315 loge("Exception in setNetworkPermission: " + e); 4316 } 4317 } 4318 synchronized (nai) { 4319 nai.networkCapabilities = networkCapabilities; 4320 } 4321 rematchAllNetworksAndRequests(nai, oldScore); 4322 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 4323 } 4324 } 4325 4326 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4327 for (int i = 0; i < nai.networkRequests.size(); i++) { 4328 NetworkRequest nr = nai.networkRequests.valueAt(i); 4329 // Don't send listening requests to factories. b/17393458 4330 if (!isRequest(nr)) continue; 4331 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4332 } 4333 } 4334 4335 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4336 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4337 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4338 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4339 networkRequest); 4340 } 4341 } 4342 4343 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4344 int notificationType) { 4345 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4346 Intent intent = new Intent(); 4347 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4348 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4349 nri.mPendingIntentSent = true; 4350 sendIntent(nri.mPendingIntent, intent); 4351 } 4352 // else not handled 4353 } 4354 4355 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4356 mPendingIntentWakeLock.acquire(); 4357 try { 4358 if (DBG) log("Sending " + pendingIntent); 4359 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4360 } catch (PendingIntent.CanceledException e) { 4361 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4362 mPendingIntentWakeLock.release(); 4363 releasePendingNetworkRequest(pendingIntent); 4364 } 4365 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4366 } 4367 4368 @Override 4369 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4370 String resultData, Bundle resultExtras) { 4371 if (DBG) log("Finished sending " + pendingIntent); 4372 mPendingIntentWakeLock.release(); 4373 // Release with a delay so the receiving client has an opportunity to put in its 4374 // own request. 4375 releasePendingNetworkRequestWithDelay(pendingIntent); 4376 } 4377 4378 private void callCallbackForRequest(NetworkRequestInfo nri, 4379 NetworkAgentInfo networkAgent, int notificationType) { 4380 if (nri.messenger == null) return; // Default request has no msgr 4381 Bundle bundle = new Bundle(); 4382 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4383 new NetworkRequest(nri.request)); 4384 Message msg = Message.obtain(); 4385 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4386 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4387 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4388 } 4389 switch (notificationType) { 4390 case ConnectivityManager.CALLBACK_LOSING: { 4391 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4392 break; 4393 } 4394 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4395 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4396 new NetworkCapabilities(networkAgent.networkCapabilities)); 4397 break; 4398 } 4399 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4400 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4401 new LinkProperties(networkAgent.linkProperties)); 4402 break; 4403 } 4404 } 4405 msg.what = notificationType; 4406 msg.setData(bundle); 4407 try { 4408 if (VDBG) { 4409 log("sending notification " + notifyTypeToName(notificationType) + 4410 " for " + nri.request); 4411 } 4412 nri.messenger.send(msg); 4413 } catch (RemoteException e) { 4414 // may occur naturally in the race of binder death. 4415 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4416 } 4417 } 4418 4419 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4420 for (int i = 0; i < nai.networkRequests.size(); i++) { 4421 NetworkRequest nr = nai.networkRequests.valueAt(i); 4422 // Ignore listening requests. 4423 if (!isRequest(nr)) continue; 4424 loge("Dead network still had at least " + nr); 4425 break; 4426 } 4427 nai.asyncChannel.disconnect(); 4428 } 4429 4430 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4431 if (oldNetwork == null) { 4432 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4433 return; 4434 } 4435 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4436 teardownUnneededNetwork(oldNetwork); 4437 } 4438 4439 private void makeDefault(NetworkAgentInfo newNetwork, NetworkAgentInfo prevNetwork) { 4440 if (DBG) log("Switching to new default network: " + newNetwork); 4441 setupDataActivityTracking(newNetwork); 4442 try { 4443 mNetd.setDefaultNetId(newNetwork.network.netId); 4444 } catch (Exception e) { 4445 loge("Exception setting default network :" + e); 4446 } 4447 notifyLockdownVpn(newNetwork); 4448 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4449 updateTcpBufferSizes(newNetwork); 4450 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4451 logDefaultNetworkEvent(newNetwork, prevNetwork); 4452 } 4453 4454 // Handles a network appearing or improving its score. 4455 // 4456 // - Evaluates all current NetworkRequests that can be 4457 // satisfied by newNetwork, and reassigns to newNetwork 4458 // any such requests for which newNetwork is the best. 4459 // 4460 // - Lingers any validated Networks that as a result are no longer 4461 // needed. A network is needed if it is the best network for 4462 // one or more NetworkRequests, or if it is a VPN. 4463 // 4464 // - Tears down newNetwork if it just became validated 4465 // but turns out to be unneeded. 4466 // 4467 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4468 // networks that have no chance (i.e. even if validated) 4469 // of becoming the highest scoring network. 4470 // 4471 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4472 // it does not remove NetworkRequests that other Networks could better satisfy. 4473 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4474 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4475 // as it performs better by a factor of the number of Networks. 4476 // 4477 // @param newNetwork is the network to be matched against NetworkRequests. 4478 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4479 // performed to tear down unvalidated networks that have no chance (i.e. even if 4480 // validated) of becoming the highest scoring network. 4481 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, 4482 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4483 if (!newNetwork.created) return; 4484 boolean keep = newNetwork.isVPN(); 4485 boolean isNewDefault = false; 4486 NetworkAgentInfo oldDefaultNetwork = null; 4487 if (VDBG) log("rematching " + newNetwork.name()); 4488 // Find and migrate to this Network any NetworkRequests for 4489 // which this network is now the best. 4490 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4491 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4492 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4493 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4494 final NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4495 final boolean satisfies = newNetwork.satisfies(nri.request); 4496 if (newNetwork == currentNetwork && satisfies) { 4497 if (VDBG) { 4498 log("Network " + newNetwork.name() + " was already satisfying" + 4499 " request " + nri.request.requestId + ". No change."); 4500 } 4501 keep = true; 4502 continue; 4503 } 4504 4505 // check if it satisfies the NetworkCapabilities 4506 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4507 if (satisfies) { 4508 if (!nri.isRequest()) { 4509 // This is not a request, it's a callback listener. 4510 // Add it to newNetwork regardless of score. 4511 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4512 continue; 4513 } 4514 4515 // next check if it's better than any current network we're using for 4516 // this request 4517 if (VDBG) { 4518 log("currentScore = " + 4519 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4520 ", newScore = " + newNetwork.getCurrentScore()); 4521 } 4522 if (currentNetwork == null || 4523 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4524 if (VDBG) log("rematch for " + newNetwork.name()); 4525 if (currentNetwork != null) { 4526 if (VDBG) log(" accepting network in place of " + currentNetwork.name()); 4527 currentNetwork.networkRequests.remove(nri.request.requestId); 4528 currentNetwork.networkLingered.add(nri.request); 4529 affectedNetworks.add(currentNetwork); 4530 } else { 4531 if (VDBG) log(" accepting network in place of null"); 4532 } 4533 unlinger(newNetwork); 4534 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4535 if (!newNetwork.addRequest(nri.request)) { 4536 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4537 } 4538 addedRequests.add(nri); 4539 keep = true; 4540 // Tell NetworkFactories about the new score, so they can stop 4541 // trying to connect if they know they cannot match it. 4542 // TODO - this could get expensive if we have alot of requests for this 4543 // network. Think about if there is a way to reduce this. Push 4544 // netid->request mapping to each factory? 4545 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4546 if (mDefaultRequest.requestId == nri.request.requestId) { 4547 isNewDefault = true; 4548 oldDefaultNetwork = currentNetwork; 4549 } 4550 } 4551 } else if (newNetwork.networkRequests.get(nri.request.requestId) != null) { 4552 // If "newNetwork" is listed as satisfying "nri" but no longer satisfies "nri", 4553 // mark it as no longer satisfying "nri". Because networks are processed by 4554 // rematchAllNetworkAndRequests() in descending score order, "currentNetwork" will 4555 // match "newNetwork" before this loop will encounter a "currentNetwork" with higher 4556 // score than "newNetwork" and where "currentNetwork" no longer satisfies "nri". 4557 // This means this code doesn't have to handle the case where "currentNetwork" no 4558 // longer satisfies "nri" when "currentNetwork" does not equal "newNetwork". 4559 if (DBG) { 4560 log("Network " + newNetwork.name() + " stopped satisfying" + 4561 " request " + nri.request.requestId); 4562 } 4563 newNetwork.networkRequests.remove(nri.request.requestId); 4564 if (currentNetwork == newNetwork) { 4565 mNetworkForRequestId.remove(nri.request.requestId); 4566 sendUpdatedScoreToFactories(nri.request, 0); 4567 } else { 4568 if (nri.isRequest()) { 4569 Slog.wtf(TAG, "BUG: Removing request " + nri.request.requestId + " from " + 4570 newNetwork.name() + 4571 " without updating mNetworkForRequestId or factories!"); 4572 } 4573 } 4574 // TODO: technically, sending CALLBACK_LOST here is 4575 // incorrect if nri is a request (not a listen) and there 4576 // is a replacement network currently connected that can 4577 // satisfy it. However, the only capability that can both 4578 // a) be requested and b) change is NET_CAPABILITY_TRUSTED, 4579 // so this code is only incorrect for a network that loses 4580 // the TRUSTED capability, which is a rare case. 4581 callCallbackForRequest(nri, newNetwork, ConnectivityManager.CALLBACK_LOST); 4582 } 4583 } 4584 // Linger any networks that are no longer needed. 4585 for (NetworkAgentInfo nai : affectedNetworks) { 4586 if (nai.lingering) { 4587 // Already lingered. Nothing to do. This can only happen if "nai" is in 4588 // "affectedNetworks" twice. The reasoning being that to get added to 4589 // "affectedNetworks", "nai" must have been satisfying a NetworkRequest 4590 // (i.e. not lingered) so it could have only been lingered by this loop. 4591 // unneeded(nai) will be false and we'll call unlinger() below which would 4592 // be bad, so handle it here. 4593 } else if (unneeded(nai)) { 4594 linger(nai); 4595 } else { 4596 // Clear nai.networkLingered we might have added above. 4597 unlinger(nai); 4598 } 4599 } 4600 if (isNewDefault) { 4601 // Notify system services that this network is up. 4602 makeDefault(newNetwork, oldDefaultNetwork); 4603 synchronized (ConnectivityService.this) { 4604 // have a new default network, release the transition wakelock in 4605 // a second if it's held. The second pause is to allow apps 4606 // to reconnect over the new network 4607 if (mNetTransitionWakeLock.isHeld()) { 4608 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4609 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4610 mNetTransitionWakeLockSerialNumber, 0), 4611 1000); 4612 } 4613 } 4614 } 4615 4616 // do this after the default net is switched, but 4617 // before LegacyTypeTracker sends legacy broadcasts 4618 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4619 4620 if (isNewDefault) { 4621 // Maintain the illusion: since the legacy API only 4622 // understands one network at a time, we must pretend 4623 // that the current default network disconnected before 4624 // the new one connected. 4625 if (oldDefaultNetwork != null) { 4626 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4627 oldDefaultNetwork, true); 4628 } 4629 mDefaultInetConditionPublished = newNetwork.lastValidated ? 100 : 0; 4630 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4631 notifyLockdownVpn(newNetwork); 4632 } 4633 4634 if (keep) { 4635 // Notify battery stats service about this network, both the normal 4636 // interface and any stacked links. 4637 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4638 try { 4639 final IBatteryStats bs = BatteryStatsService.getService(); 4640 final int type = newNetwork.networkInfo.getType(); 4641 4642 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4643 bs.noteNetworkInterfaceType(baseIface, type); 4644 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4645 final String stackedIface = stacked.getInterfaceName(); 4646 bs.noteNetworkInterfaceType(stackedIface, type); 4647 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4648 } 4649 } catch (RemoteException ignored) { 4650 } 4651 4652 // This has to happen after the notifyNetworkCallbacks as that tickles each 4653 // ConnectivityManager instance so that legacy requests correctly bind dns 4654 // requests to this network. The legacy users are listening for this bcast 4655 // and will generally do a dns request so they can ensureRouteToHost and if 4656 // they do that before the callbacks happen they'll use the default network. 4657 // 4658 // TODO: Is there still a race here? We send the broadcast 4659 // after sending the callback, but if the app can receive the 4660 // broadcast before the callback, it might still break. 4661 // 4662 // This *does* introduce a race where if the user uses the new api 4663 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4664 // they may get old info. Reverse this after the old startUsing api is removed. 4665 // This is on top of the multiple intent sequencing referenced in the todo above. 4666 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4667 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4668 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4669 // legacy type tracker filters out repeat adds 4670 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4671 } 4672 } 4673 4674 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4675 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4676 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4677 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4678 if (newNetwork.isVPN()) { 4679 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4680 } 4681 } 4682 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4683 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4684 if (unneeded(nai)) { 4685 if (DBG) log("Reaping " + nai.name()); 4686 teardownUnneededNetwork(nai); 4687 } 4688 } 4689 } 4690 } 4691 4692 /** 4693 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4694 * being disconnected. 4695 * @param changed If only one Network's score or capabilities have been modified since the last 4696 * time this function was called, pass this Network in this argument, otherwise pass 4697 * null. 4698 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4699 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4700 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4701 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4702 * network's score. 4703 */ 4704 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4705 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4706 // to avoid the slowness. It is not simply enough to process just "changed", for 4707 // example in the case where "changed"'s score decreases and another network should begin 4708 // satifying a NetworkRequest that "changed" currently satisfies. 4709 4710 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4711 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4712 // rematchNetworkAndRequests() handles. 4713 if (changed != null && oldScore < changed.getCurrentScore()) { 4714 rematchNetworkAndRequests(changed, ReapUnvalidatedNetworks.REAP); 4715 } else { 4716 final NetworkAgentInfo[] nais = mNetworkAgentInfos.values().toArray( 4717 new NetworkAgentInfo[mNetworkAgentInfos.size()]); 4718 // Rematch higher scoring networks first to prevent requests first matching a lower 4719 // scoring network and then a higher scoring network, which could produce multiple 4720 // callbacks and inadvertently unlinger networks. 4721 Arrays.sort(nais); 4722 for (NetworkAgentInfo nai : nais) { 4723 rematchNetworkAndRequests(nai, 4724 // Only reap the last time through the loop. Reaping before all rematching 4725 // is complete could incorrectly teardown a network that hasn't yet been 4726 // rematched. 4727 (nai != nais[nais.length-1]) ? ReapUnvalidatedNetworks.DONT_REAP 4728 : ReapUnvalidatedNetworks.REAP); 4729 } 4730 } 4731 } 4732 4733 private void updateInetCondition(NetworkAgentInfo nai) { 4734 // Don't bother updating until we've graduated to validated at least once. 4735 if (!nai.everValidated) return; 4736 // For now only update icons for default connection. 4737 // TODO: Update WiFi and cellular icons separately. b/17237507 4738 if (!isDefaultNetwork(nai)) return; 4739 4740 int newInetCondition = nai.lastValidated ? 100 : 0; 4741 // Don't repeat publish. 4742 if (newInetCondition == mDefaultInetConditionPublished) return; 4743 4744 mDefaultInetConditionPublished = newInetCondition; 4745 sendInetConditionBroadcast(nai.networkInfo); 4746 } 4747 4748 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4749 if (mLockdownTracker != null) { 4750 if (nai != null && nai.isVPN()) { 4751 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4752 } else { 4753 mLockdownTracker.onNetworkInfoChanged(); 4754 } 4755 } 4756 } 4757 4758 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4759 NetworkInfo.State state = newInfo.getState(); 4760 NetworkInfo oldInfo = null; 4761 final int oldScore = networkAgent.getCurrentScore(); 4762 synchronized (networkAgent) { 4763 oldInfo = networkAgent.networkInfo; 4764 networkAgent.networkInfo = newInfo; 4765 } 4766 notifyLockdownVpn(networkAgent); 4767 4768 if (oldInfo != null && oldInfo.getState() == state) { 4769 if (oldInfo.isRoaming() != newInfo.isRoaming()) { 4770 if (VDBG) log("roaming status changed, notifying NetworkStatsService"); 4771 notifyIfacesChangedForNetworkStats(); 4772 } else if (VDBG) log("ignoring duplicate network state non-change"); 4773 // In either case, no further work should be needed. 4774 return; 4775 } 4776 if (DBG) { 4777 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4778 (oldInfo == null ? "null" : oldInfo.getState()) + 4779 " to " + state); 4780 } 4781 4782 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4783 try { 4784 // This should never fail. Specifying an already in use NetID will cause failure. 4785 if (networkAgent.isVPN()) { 4786 mNetd.createVirtualNetwork(networkAgent.network.netId, 4787 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4788 (networkAgent.networkMisc == null || 4789 !networkAgent.networkMisc.allowBypass)); 4790 } else { 4791 mNetd.createPhysicalNetwork(networkAgent.network.netId, 4792 networkAgent.networkCapabilities.hasCapability( 4793 NET_CAPABILITY_NOT_RESTRICTED) ? 4794 null : NetworkManagementService.PERMISSION_SYSTEM); 4795 } 4796 } catch (Exception e) { 4797 loge("Error creating network " + networkAgent.network.netId + ": " 4798 + e.getMessage()); 4799 return; 4800 } 4801 networkAgent.created = true; 4802 updateLinkProperties(networkAgent, null); 4803 notifyIfacesChangedForNetworkStats(); 4804 4805 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4806 scheduleUnvalidatedPrompt(networkAgent); 4807 4808 if (networkAgent.isVPN()) { 4809 // Temporarily disable the default proxy (not global). 4810 synchronized (mProxyLock) { 4811 if (!mDefaultProxyDisabled) { 4812 mDefaultProxyDisabled = true; 4813 if (mGlobalProxy == null && mDefaultProxy != null) { 4814 sendProxyBroadcast(null); 4815 } 4816 } 4817 } 4818 // TODO: support proxy per network. 4819 } 4820 4821 // Whether a particular NetworkRequest listen should cause signal strength thresholds to 4822 // be communicated to a particular NetworkAgent depends only on the network's immutable, 4823 // capabilities, so it only needs to be done once on initial connect, not every time the 4824 // network's capabilities change. Note that we do this before rematching the network, 4825 // so we could decide to tear it down immediately afterwards. That's fine though - on 4826 // disconnection NetworkAgents should stop any signal strength monitoring they have been 4827 // doing. 4828 updateSignalStrengthThresholds(networkAgent, "CONNECT", null); 4829 4830 // Consider network even though it is not yet validated. 4831 rematchNetworkAndRequests(networkAgent, ReapUnvalidatedNetworks.REAP); 4832 4833 // This has to happen after matching the requests, because callbacks are just requests. 4834 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4835 } else if (state == NetworkInfo.State.DISCONNECTED) { 4836 networkAgent.asyncChannel.disconnect(); 4837 if (networkAgent.isVPN()) { 4838 synchronized (mProxyLock) { 4839 if (mDefaultProxyDisabled) { 4840 mDefaultProxyDisabled = false; 4841 if (mGlobalProxy == null && mDefaultProxy != null) { 4842 sendProxyBroadcast(mDefaultProxy); 4843 } 4844 } 4845 } 4846 } 4847 } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) || 4848 state == NetworkInfo.State.SUSPENDED) { 4849 // going into or coming out of SUSPEND: rescore and notify 4850 if (networkAgent.getCurrentScore() != oldScore) { 4851 rematchAllNetworksAndRequests(networkAgent, oldScore); 4852 } 4853 notifyNetworkCallbacks(networkAgent, (state == NetworkInfo.State.SUSPENDED ? 4854 ConnectivityManager.CALLBACK_SUSPENDED : 4855 ConnectivityManager.CALLBACK_RESUMED)); 4856 mLegacyTypeTracker.update(networkAgent); 4857 } 4858 } 4859 4860 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4861 if (VDBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4862 if (score < 0) { 4863 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4864 "). Bumping score to min of 0"); 4865 score = 0; 4866 } 4867 4868 final int oldScore = nai.getCurrentScore(); 4869 nai.setCurrentScore(score); 4870 4871 rematchAllNetworksAndRequests(nai, oldScore); 4872 4873 sendUpdatedScoreToFactories(nai); 4874 } 4875 4876 // notify only this one new request of the current state 4877 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4878 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4879 // TODO - read state from monitor to decide what to send. 4880// if (nai.networkMonitor.isLingering()) { 4881// notifyType = NetworkCallbacks.LOSING; 4882// } else if (nai.networkMonitor.isEvaluating()) { 4883// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4884// } 4885 if (nri.mPendingIntent == null) { 4886 callCallbackForRequest(nri, nai, notifyType); 4887 } else { 4888 sendPendingIntentForRequest(nri, nai, notifyType); 4889 } 4890 } 4891 4892 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, DetailedState state, int type) { 4893 // The NetworkInfo we actually send out has no bearing on the real 4894 // state of affairs. For example, if the default connection is mobile, 4895 // and a request for HIPRI has just gone away, we need to pretend that 4896 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4897 // the state to DISCONNECTED, even though the network is of type MOBILE 4898 // and is still connected. 4899 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4900 info.setType(type); 4901 if (state != DetailedState.DISCONNECTED) { 4902 info.setDetailedState(state, null, info.getExtraInfo()); 4903 sendConnectedBroadcast(info); 4904 } else { 4905 info.setDetailedState(state, info.getReason(), info.getExtraInfo()); 4906 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4907 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4908 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4909 if (info.isFailover()) { 4910 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4911 nai.networkInfo.setFailover(false); 4912 } 4913 if (info.getReason() != null) { 4914 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4915 } 4916 if (info.getExtraInfo() != null) { 4917 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4918 } 4919 NetworkAgentInfo newDefaultAgent = null; 4920 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4921 newDefaultAgent = getDefaultNetwork(); 4922 if (newDefaultAgent != null) { 4923 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4924 newDefaultAgent.networkInfo); 4925 } else { 4926 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4927 } 4928 } 4929 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4930 mDefaultInetConditionPublished); 4931 sendStickyBroadcast(intent); 4932 if (newDefaultAgent != null) { 4933 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4934 } 4935 } 4936 } 4937 4938 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4939 if (VDBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4940 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4941 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4942 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4943 if (VDBG) log(" sending notification for " + nr); 4944 if (nri.mPendingIntent == null) { 4945 callCallbackForRequest(nri, networkAgent, notifyType); 4946 } else { 4947 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4948 } 4949 } 4950 } 4951 4952 private String notifyTypeToName(int notifyType) { 4953 switch (notifyType) { 4954 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4955 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4956 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4957 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4958 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4959 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4960 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4961 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4962 } 4963 return "UNKNOWN"; 4964 } 4965 4966 /** 4967 * Notify NetworkStatsService that the set of active ifaces has changed, or that one of the 4968 * properties tracked by NetworkStatsService on an active iface has changed. 4969 */ 4970 private void notifyIfacesChangedForNetworkStats() { 4971 try { 4972 mStatsService.forceUpdateIfaces(); 4973 } catch (Exception ignored) { 4974 } 4975 } 4976 4977 @Override 4978 public boolean addVpnAddress(String address, int prefixLength) { 4979 throwIfLockdownEnabled(); 4980 int user = UserHandle.getUserId(Binder.getCallingUid()); 4981 synchronized (mVpns) { 4982 return mVpns.get(user).addAddress(address, prefixLength); 4983 } 4984 } 4985 4986 @Override 4987 public boolean removeVpnAddress(String address, int prefixLength) { 4988 throwIfLockdownEnabled(); 4989 int user = UserHandle.getUserId(Binder.getCallingUid()); 4990 synchronized (mVpns) { 4991 return mVpns.get(user).removeAddress(address, prefixLength); 4992 } 4993 } 4994 4995 @Override 4996 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4997 throwIfLockdownEnabled(); 4998 int user = UserHandle.getUserId(Binder.getCallingUid()); 4999 boolean success; 5000 synchronized (mVpns) { 5001 success = mVpns.get(user).setUnderlyingNetworks(networks); 5002 } 5003 if (success) { 5004 notifyIfacesChangedForNetworkStats(); 5005 } 5006 return success; 5007 } 5008 5009 @Override 5010 public String getCaptivePortalServerUrl() { 5011 return NetworkMonitor.getCaptivePortalServerUrl(mContext); 5012 } 5013 5014 @Override 5015 public void startNattKeepalive(Network network, int intervalSeconds, Messenger messenger, 5016 IBinder binder, String srcAddr, int srcPort, String dstAddr) { 5017 enforceKeepalivePermission(); 5018 mKeepaliveTracker.startNattKeepalive( 5019 getNetworkAgentInfoForNetwork(network), 5020 intervalSeconds, messenger, binder, 5021 srcAddr, srcPort, dstAddr, ConnectivityManager.PacketKeepalive.NATT_PORT); 5022 } 5023 5024 @Override 5025 public void stopKeepalive(Network network, int slot) { 5026 mHandler.sendMessage(mHandler.obtainMessage( 5027 NetworkAgent.CMD_STOP_PACKET_KEEPALIVE, slot, PacketKeepalive.SUCCESS, network)); 5028 } 5029 5030 @Override 5031 public void factoryReset() { 5032 enforceConnectivityInternalPermission(); 5033 5034 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 5035 return; 5036 } 5037 5038 final int userId = UserHandle.getCallingUserId(); 5039 5040 // Turn airplane mode off 5041 setAirplaneMode(false); 5042 5043 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 5044 // Untether 5045 for (String tether : getTetheredIfaces()) { 5046 untether(tether); 5047 } 5048 } 5049 5050 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 5051 // Turn VPN off 5052 VpnConfig vpnConfig = getVpnConfig(userId); 5053 if (vpnConfig != null) { 5054 if (vpnConfig.legacy) { 5055 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 5056 } else { 5057 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 5058 // in the future without user intervention. 5059 setVpnPackageAuthorization(vpnConfig.user, userId, false); 5060 5061 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 5062 } 5063 } 5064 } 5065 } 5066 5067 @VisibleForTesting 5068 public NetworkMonitor createNetworkMonitor(Context context, Handler handler, 5069 NetworkAgentInfo nai, NetworkRequest defaultRequest) { 5070 return new NetworkMonitor(context, handler, nai, defaultRequest); 5071 } 5072 5073 private static void logDefaultNetworkEvent(NetworkAgentInfo newNai, NetworkAgentInfo prevNai) { 5074 int newNetid = NETID_UNSET; 5075 int prevNetid = NETID_UNSET; 5076 int[] transports = new int[0]; 5077 boolean hadIPv4 = false; 5078 boolean hadIPv6 = false; 5079 5080 if (newNai != null) { 5081 newNetid = newNai.network.netId; 5082 transports = newNai.networkCapabilities.getTransportTypes(); 5083 } 5084 if (prevNai != null) { 5085 prevNetid = prevNai.network.netId; 5086 final LinkProperties lp = prevNai.linkProperties; 5087 hadIPv4 = lp.hasIPv4Address() && lp.hasIPv4DefaultRoute(); 5088 hadIPv6 = lp.hasGlobalIPv6Address() && lp.hasIPv6DefaultRoute(); 5089 } 5090 5091 DefaultNetworkEvent.logEvent(newNetid, transports, prevNetid, hadIPv4, hadIPv6); 5092 } 5093} 5094