ConnectivityService.java revision 3f4510535397bf103d0299440a0299ff8bbeec28
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.os.Binder; 76import android.os.Build; 77import android.os.Bundle; 78import android.os.FileUtils; 79import android.os.Handler; 80import android.os.HandlerThread; 81import android.os.IBinder; 82import android.os.INetworkManagementService; 83import android.os.Looper; 84import android.os.Message; 85import android.os.Messenger; 86import android.os.ParcelFileDescriptor; 87import android.os.PowerManager; 88import android.os.Process; 89import android.os.RemoteException; 90import android.os.ResultReceiver; 91import android.os.SystemProperties; 92import android.os.UserHandle; 93import android.os.UserManager; 94import android.provider.Settings; 95import android.security.Credentials; 96import android.security.KeyStore; 97import android.telephony.TelephonyManager; 98import android.text.TextUtils; 99import android.util.LocalLog; 100import android.util.LocalLog.ReadOnlyLocalLog; 101import android.util.Pair; 102import android.util.Slog; 103import android.util.SparseArray; 104import android.util.SparseBooleanArray; 105import android.util.SparseIntArray; 106import android.util.Xml; 107 108import com.android.internal.R; 109import com.android.internal.annotations.GuardedBy; 110import com.android.internal.annotations.VisibleForTesting; 111import com.android.internal.app.IBatteryStats; 112import com.android.internal.net.LegacyVpnInfo; 113import com.android.internal.net.NetworkStatsFactory; 114import com.android.internal.net.VpnConfig; 115import com.android.internal.net.VpnInfo; 116import com.android.internal.net.VpnProfile; 117import com.android.internal.util.AsyncChannel; 118import com.android.internal.util.IndentingPrintWriter; 119import com.android.internal.util.MessageUtils; 120import com.android.internal.util.XmlUtils; 121import com.android.server.am.BatteryStatsService; 122import com.android.server.connectivity.DataConnectionStats; 123import com.android.server.connectivity.KeepaliveTracker; 124import com.android.server.connectivity.NetworkDiagnostics; 125import com.android.server.connectivity.Nat464Xlat; 126import com.android.server.connectivity.NetworkAgentInfo; 127import com.android.server.connectivity.NetworkMonitor; 128import com.android.server.connectivity.PacManager; 129import com.android.server.connectivity.PermissionMonitor; 130import com.android.server.connectivity.Tethering; 131import com.android.server.connectivity.Vpn; 132import com.android.server.net.BaseNetworkObserver; 133import com.android.server.net.LockdownVpnTracker; 134import com.google.android.collect.Lists; 135import com.google.android.collect.Sets; 136 137import org.xmlpull.v1.XmlPullParser; 138import org.xmlpull.v1.XmlPullParserException; 139 140import java.io.File; 141import java.io.FileDescriptor; 142import java.io.FileNotFoundException; 143import java.io.FileReader; 144import java.io.IOException; 145import java.io.PrintWriter; 146import java.net.Inet4Address; 147import java.net.InetAddress; 148import java.net.UnknownHostException; 149import java.util.ArrayDeque; 150import java.util.ArrayList; 151import java.util.Arrays; 152import java.util.Collection; 153import java.util.HashMap; 154import java.util.HashSet; 155import java.util.SortedSet; 156import java.util.TreeSet; 157import java.util.List; 158import java.util.Map; 159import java.util.Objects; 160 161/** 162 * @hide 163 */ 164public class ConnectivityService extends IConnectivityManager.Stub 165 implements PendingIntent.OnFinished { 166 private static final String TAG = "ConnectivityService"; 167 168 private static final boolean DBG = true; 169 private static final boolean VDBG = false; 170 171 private static final boolean LOGD_RULES = false; 172 private static final boolean LOGD_BLOCKED_NETWORKINFO = true; 173 174 // TODO: create better separation between radio types and network types 175 176 // how long to wait before switching back to a radio's default network 177 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 178 // system property that can override the above value 179 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 180 "android.telephony.apn-restore"; 181 182 // How long to wait before putting up a "This network doesn't have an Internet connection, 183 // connect anyway?" dialog after the user selects a network that doesn't validate. 184 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 185 186 // How long to delay to removal of a pending intent based request. 187 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 188 private final int mReleasePendingIntentDelayMs; 189 190 private Tethering mTethering; 191 192 private final PermissionMonitor mPermissionMonitor; 193 194 private KeyStore mKeyStore; 195 196 @GuardedBy("mVpns") 197 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 198 199 private boolean mLockdownEnabled; 200 private LockdownVpnTracker mLockdownTracker; 201 202 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 203 private Object mRulesLock = new Object(); 204 /** Currently active network rules by UID. */ 205 private SparseIntArray mUidRules = new SparseIntArray(); 206 /** Set of ifaces that are costly. */ 207 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 208 209 final private Context mContext; 210 private int mNetworkPreference; 211 // 0 is full bad, 100 is full good 212 private int mDefaultInetConditionPublished = 0; 213 214 private int mNumDnsEntries; 215 216 private boolean mTestMode; 217 private static ConnectivityService sServiceInstance; 218 219 private INetworkManagementService mNetd; 220 private INetworkStatsService mStatsService; 221 private INetworkPolicyManager mPolicyManager; 222 223 private String mCurrentTcpBufferSizes; 224 225 private static final int ENABLED = 1; 226 private static final int DISABLED = 0; 227 228 private static final SparseArray<String> sMagicDecoderRing = MessageUtils.findMessageNames( 229 new Class[] { AsyncChannel.class, ConnectivityService.class, NetworkAgent.class }); 230 231 private enum ReapUnvalidatedNetworks { 232 // Tear down networks that have no chance (e.g. even if validated) of becoming 233 // the highest scoring network satisfying a NetworkRequest. This should be passed when 234 // all networks have been rematched against all NetworkRequests. 235 REAP, 236 // Don't reap networks. This should be passed when some networks have not yet been 237 // rematched against all NetworkRequests. 238 DONT_REAP 239 }; 240 241 /** 242 * used internally to change our mobile data enabled flag 243 */ 244 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 245 246 /** 247 * used internally to clear a wakelock when transitioning 248 * from one net to another. Clear happens when we get a new 249 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 250 * after a timeout if no network is found (typically 1 min). 251 */ 252 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 253 254 /** 255 * used internally to reload global proxy settings 256 */ 257 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 258 259 /** 260 * PAC manager has received new port. 261 */ 262 private static final int EVENT_PROXY_HAS_CHANGED = 16; 263 264 /** 265 * used internally when registering NetworkFactories 266 * obj = NetworkFactoryInfo 267 */ 268 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 269 270 /** 271 * used internally when registering NetworkAgents 272 * obj = Messenger 273 */ 274 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 275 276 /** 277 * used to add a network request 278 * includes a NetworkRequestInfo 279 */ 280 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 281 282 /** 283 * indicates a timeout period is over - check if we had a network yet or not 284 * and if not, call the timeout calback (but leave the request live until they 285 * cancel it. 286 * includes a NetworkRequestInfo 287 */ 288 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 289 290 /** 291 * used to add a network listener - no request 292 * includes a NetworkRequestInfo 293 */ 294 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 295 296 /** 297 * used to remove a network request, either a listener or a real request 298 * arg1 = UID of caller 299 * obj = NetworkRequest 300 */ 301 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 302 303 /** 304 * used internally when registering NetworkFactories 305 * obj = Messenger 306 */ 307 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 308 309 /** 310 * used internally to expire a wakelock when transitioning 311 * from one net to another. Expire happens when we fail to find 312 * a new network (typically after 1 minute) - 313 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 314 * a replacement network. 315 */ 316 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 317 318 /** 319 * Used internally to indicate the system is ready. 320 */ 321 private static final int EVENT_SYSTEM_READY = 25; 322 323 /** 324 * used to add a network request with a pending intent 325 * obj = NetworkRequestInfo 326 */ 327 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 328 329 /** 330 * used to remove a pending intent and its associated network request. 331 * arg1 = UID of caller 332 * obj = PendingIntent 333 */ 334 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 335 336 /** 337 * used to specify whether a network should be used even if unvalidated. 338 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 339 * arg2 = whether to remember this choice in the future (1 or 0) 340 * obj = network 341 */ 342 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 343 344 /** 345 * used to ask the user to confirm a connection to an unvalidated network. 346 * obj = network 347 */ 348 private static final int EVENT_PROMPT_UNVALIDATED = 29; 349 350 /** 351 * used internally to (re)configure mobile data always-on settings. 352 */ 353 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 354 355 /** 356 * used to add a network listener with a pending intent 357 * obj = NetworkRequestInfo 358 */ 359 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 360 361 /** Handler thread used for both of the handlers below. */ 362 @VisibleForTesting 363 protected final HandlerThread mHandlerThread; 364 /** Handler used for internal events. */ 365 final private InternalHandler mHandler; 366 /** Handler used for incoming {@link NetworkStateTracker} events. */ 367 final private NetworkStateTrackerHandler mTrackerHandler; 368 369 private boolean mSystemReady; 370 private Intent mInitialBroadcast; 371 372 private PowerManager.WakeLock mNetTransitionWakeLock; 373 private String mNetTransitionWakeLockCausedBy = ""; 374 private int mNetTransitionWakeLockSerialNumber; 375 private int mNetTransitionWakeLockTimeout; 376 private final PowerManager.WakeLock mPendingIntentWakeLock; 377 378 // used in DBG mode to track inet condition reports 379 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 380 private ArrayList mInetLog; 381 382 // track the current default http proxy - tell the world if we get a new one (real change) 383 private volatile ProxyInfo mDefaultProxy = null; 384 private Object mProxyLock = new Object(); 385 private boolean mDefaultProxyDisabled = false; 386 387 // track the global proxy. 388 private ProxyInfo mGlobalProxy = null; 389 390 private PacManager mPacManager = null; 391 392 final private SettingsObserver mSettingsObserver; 393 394 private UserManager mUserManager; 395 396 NetworkConfig[] mNetConfigs; 397 int mNetworksDefined; 398 399 // the set of network types that can only be enabled by system/sig apps 400 List mProtectedNetworks; 401 402 private DataConnectionStats mDataConnectionStats; 403 404 TelephonyManager mTelephonyManager; 405 406 private KeepaliveTracker mKeepaliveTracker; 407 408 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 409 private final static int MIN_NET_ID = 100; // some reserved marks 410 private final static int MAX_NET_ID = 65535; 411 private int mNextNetId = MIN_NET_ID; 412 413 // sequence number of NetworkRequests 414 private int mNextNetworkRequestId = 1; 415 416 // NetworkRequest activity String log entries. 417 private static final int MAX_NETWORK_REQUEST_LOGS = 20; 418 private final LocalLog mNetworkRequestInfoLogs = new LocalLog(MAX_NETWORK_REQUEST_LOGS); 419 420 // Array of <Network,ReadOnlyLocalLogs> tracking network validation and results 421 private static final int MAX_VALIDATION_LOGS = 10; 422 private final ArrayDeque<Pair<Network,ReadOnlyLocalLog>> mValidationLogs = 423 new ArrayDeque<Pair<Network,ReadOnlyLocalLog>>(MAX_VALIDATION_LOGS); 424 425 private void addValidationLogs(ReadOnlyLocalLog log, Network network) { 426 synchronized(mValidationLogs) { 427 while (mValidationLogs.size() >= MAX_VALIDATION_LOGS) { 428 mValidationLogs.removeLast(); 429 } 430 mValidationLogs.addFirst(new Pair(network, log)); 431 } 432 } 433 434 /** 435 * Implements support for the legacy "one network per network type" model. 436 * 437 * We used to have a static array of NetworkStateTrackers, one for each 438 * network type, but that doesn't work any more now that we can have, 439 * for example, more that one wifi network. This class stores all the 440 * NetworkAgentInfo objects that support a given type, but the legacy 441 * API will only see the first one. 442 * 443 * It serves two main purposes: 444 * 445 * 1. Provide information about "the network for a given type" (since this 446 * API only supports one). 447 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 448 * the first network for a given type changes, or if the default network 449 * changes. 450 */ 451 private class LegacyTypeTracker { 452 453 private static final boolean DBG = true; 454 private static final boolean VDBG = false; 455 456 /** 457 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 458 * Each list holds references to all NetworkAgentInfos that are used to 459 * satisfy requests for that network type. 460 * 461 * This array is built out at startup such that an unsupported network 462 * doesn't get an ArrayList instance, making this a tristate: 463 * unsupported, supported but not active and active. 464 * 465 * The actual lists are populated when we scan the network types that 466 * are supported on this device. 467 */ 468 private ArrayList<NetworkAgentInfo> mTypeLists[]; 469 470 public LegacyTypeTracker() { 471 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 472 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 473 } 474 475 public void addSupportedType(int type) { 476 if (mTypeLists[type] != null) { 477 throw new IllegalStateException( 478 "legacy list for type " + type + "already initialized"); 479 } 480 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 481 } 482 483 public boolean isTypeSupported(int type) { 484 return isNetworkTypeValid(type) && mTypeLists[type] != null; 485 } 486 487 public NetworkAgentInfo getNetworkForType(int type) { 488 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 489 return mTypeLists[type].get(0); 490 } else { 491 return null; 492 } 493 } 494 495 private void maybeLogBroadcast(NetworkAgentInfo nai, DetailedState state, int type, 496 boolean isDefaultNetwork) { 497 if (DBG) { 498 log("Sending " + state + 499 " broadcast for type " + type + " " + nai.name() + 500 " isDefaultNetwork=" + isDefaultNetwork); 501 } 502 } 503 504 /** Adds the given network to the specified legacy type list. */ 505 public void add(int type, NetworkAgentInfo nai) { 506 if (!isTypeSupported(type)) { 507 return; // Invalid network type. 508 } 509 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 510 511 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 512 if (list.contains(nai)) { 513 return; 514 } 515 516 list.add(nai); 517 518 // Send a broadcast if this is the first network of its type or if it's the default. 519 final boolean isDefaultNetwork = isDefaultNetwork(nai); 520 if (list.size() == 1 || isDefaultNetwork) { 521 maybeLogBroadcast(nai, DetailedState.CONNECTED, type, isDefaultNetwork); 522 sendLegacyNetworkBroadcast(nai, DetailedState.CONNECTED, type); 523 } 524 } 525 526 /** Removes the given network from the specified legacy type list. */ 527 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 528 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 529 if (list == null || list.isEmpty()) { 530 return; 531 } 532 533 final boolean wasFirstNetwork = list.get(0).equals(nai); 534 535 if (!list.remove(nai)) { 536 return; 537 } 538 539 final DetailedState state = DetailedState.DISCONNECTED; 540 541 if (wasFirstNetwork || wasDefault) { 542 maybeLogBroadcast(nai, state, type, wasDefault); 543 sendLegacyNetworkBroadcast(nai, state, type); 544 } 545 546 if (!list.isEmpty() && wasFirstNetwork) { 547 if (DBG) log("Other network available for type " + type + 548 ", sending connected broadcast"); 549 final NetworkAgentInfo replacement = list.get(0); 550 maybeLogBroadcast(replacement, state, type, isDefaultNetwork(replacement)); 551 sendLegacyNetworkBroadcast(replacement, state, type); 552 } 553 } 554 555 /** Removes the given network from all legacy type lists. */ 556 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 557 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 558 for (int type = 0; type < mTypeLists.length; type++) { 559 remove(type, nai, wasDefault); 560 } 561 } 562 563 // send out another legacy broadcast - currently only used for suspend/unsuspend 564 // toggle 565 public void update(NetworkAgentInfo nai) { 566 final boolean isDefault = isDefaultNetwork(nai); 567 final DetailedState state = nai.networkInfo.getDetailedState(); 568 for (int type = 0; type < mTypeLists.length; type++) { 569 final ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 570 final boolean contains = (list != null && list.contains(nai)); 571 final boolean isFirst = (list != null && list.size() > 0 && nai == list.get(0)); 572 if (isFirst || (contains && isDefault)) { 573 maybeLogBroadcast(nai, state, type, isDefault); 574 sendLegacyNetworkBroadcast(nai, state, type); 575 } 576 } 577 } 578 579 private String naiToString(NetworkAgentInfo nai) { 580 String name = (nai != null) ? nai.name() : "null"; 581 String state = (nai.networkInfo != null) ? 582 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 583 "???/???"; 584 return name + " " + state; 585 } 586 587 public void dump(IndentingPrintWriter pw) { 588 pw.println("mLegacyTypeTracker:"); 589 pw.increaseIndent(); 590 pw.print("Supported types:"); 591 for (int type = 0; type < mTypeLists.length; type++) { 592 if (mTypeLists[type] != null) pw.print(" " + type); 593 } 594 pw.println(); 595 pw.println("Current state:"); 596 pw.increaseIndent(); 597 for (int type = 0; type < mTypeLists.length; type++) { 598 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 599 for (NetworkAgentInfo nai : mTypeLists[type]) { 600 pw.println(type + " " + naiToString(nai)); 601 } 602 } 603 pw.decreaseIndent(); 604 pw.decreaseIndent(); 605 pw.println(); 606 } 607 } 608 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 609 610 @VisibleForTesting 611 protected HandlerThread createHandlerThread() { 612 return new HandlerThread("ConnectivityServiceThread"); 613 } 614 615 public ConnectivityService(Context context, INetworkManagementService netManager, 616 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 617 if (DBG) log("ConnectivityService starting up"); 618 619 mDefaultRequest = createInternetRequestForTransport(-1); 620 NetworkRequestInfo defaultNRI = new NetworkRequestInfo(null, mDefaultRequest, 621 new Binder(), NetworkRequestType.REQUEST); 622 mNetworkRequests.put(mDefaultRequest, defaultNRI); 623 mNetworkRequestInfoLogs.log("REGISTER " + defaultNRI); 624 625 mDefaultMobileDataRequest = createInternetRequestForTransport( 626 NetworkCapabilities.TRANSPORT_CELLULAR); 627 628 mHandlerThread = createHandlerThread(); 629 mHandlerThread.start(); 630 mHandler = new InternalHandler(mHandlerThread.getLooper()); 631 mTrackerHandler = new NetworkStateTrackerHandler(mHandlerThread.getLooper()); 632 633 // setup our unique device name 634 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 635 String id = Settings.Secure.getString(context.getContentResolver(), 636 Settings.Secure.ANDROID_ID); 637 if (id != null && id.length() > 0) { 638 String name = new String("android-").concat(id); 639 SystemProperties.set("net.hostname", name); 640 } 641 } 642 643 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 644 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 645 646 mContext = checkNotNull(context, "missing Context"); 647 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 648 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 649 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 650 mKeyStore = KeyStore.getInstance(); 651 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 652 653 try { 654 mPolicyManager.registerListener(mPolicyListener); 655 } catch (RemoteException e) { 656 // ouch, no rules updates means some processes may never get network 657 loge("unable to register INetworkPolicyListener" + e.toString()); 658 } 659 660 final PowerManager powerManager = (PowerManager) context.getSystemService( 661 Context.POWER_SERVICE); 662 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 663 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 664 com.android.internal.R.integer.config_networkTransitionTimeout); 665 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 666 667 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 668 669 // TODO: What is the "correct" way to do determine if this is a wifi only device? 670 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 671 log("wifiOnly=" + wifiOnly); 672 String[] naStrings = context.getResources().getStringArray( 673 com.android.internal.R.array.networkAttributes); 674 for (String naString : naStrings) { 675 try { 676 NetworkConfig n = new NetworkConfig(naString); 677 if (VDBG) log("naString=" + naString + " config=" + n); 678 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 679 loge("Error in networkAttributes - ignoring attempt to define type " + 680 n.type); 681 continue; 682 } 683 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 684 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 685 n.type); 686 continue; 687 } 688 if (mNetConfigs[n.type] != null) { 689 loge("Error in networkAttributes - ignoring attempt to redefine type " + 690 n.type); 691 continue; 692 } 693 mLegacyTypeTracker.addSupportedType(n.type); 694 695 mNetConfigs[n.type] = n; 696 mNetworksDefined++; 697 } catch(Exception e) { 698 // ignore it - leave the entry null 699 } 700 } 701 702 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 703 if (mNetConfigs[TYPE_VPN] == null) { 704 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 705 // don't need to add TYPE_VPN to mNetConfigs. 706 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 707 mNetworksDefined++; // used only in the log() statement below. 708 } 709 710 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 711 712 mProtectedNetworks = new ArrayList<Integer>(); 713 int[] protectedNetworks = context.getResources().getIntArray( 714 com.android.internal.R.array.config_protectedNetworks); 715 for (int p : protectedNetworks) { 716 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 717 mProtectedNetworks.add(p); 718 } else { 719 if (DBG) loge("Ignoring protectedNetwork " + p); 720 } 721 } 722 723 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 724 && SystemProperties.get("ro.build.type").equals("eng"); 725 726 mTethering = new Tethering(mContext, mNetd, statsService); 727 728 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 729 730 //set up the listener for user state for creating user VPNs 731 IntentFilter intentFilter = new IntentFilter(); 732 intentFilter.addAction(Intent.ACTION_USER_STARTING); 733 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 734 intentFilter.addAction(Intent.ACTION_USER_ADDED); 735 intentFilter.addAction(Intent.ACTION_USER_REMOVED); 736 intentFilter.addAction(Intent.ACTION_USER_UNLOCKED); 737 mContext.registerReceiverAsUser( 738 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 739 740 try { 741 mNetd.registerObserver(mTethering); 742 mNetd.registerObserver(mDataActivityObserver); 743 } catch (RemoteException e) { 744 loge("Error registering observer :" + e); 745 } 746 747 if (DBG) { 748 mInetLog = new ArrayList(); 749 } 750 751 mSettingsObserver = new SettingsObserver(mContext, mHandler); 752 registerSettingsCallbacks(); 753 754 mDataConnectionStats = new DataConnectionStats(mContext); 755 mDataConnectionStats.startMonitoring(); 756 757 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 758 759 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 760 761 mKeepaliveTracker = new KeepaliveTracker(mHandler); 762 } 763 764 private NetworkRequest createInternetRequestForTransport(int transportType) { 765 NetworkCapabilities netCap = new NetworkCapabilities(); 766 netCap.addCapability(NET_CAPABILITY_INTERNET); 767 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 768 if (transportType > -1) { 769 netCap.addTransportType(transportType); 770 } 771 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 772 } 773 774 private void handleMobileDataAlwaysOn() { 775 final boolean enable = (Settings.Global.getInt( 776 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 777 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 778 if (enable == isEnabled) { 779 return; // Nothing to do. 780 } 781 782 if (enable) { 783 handleRegisterNetworkRequest(new NetworkRequestInfo( 784 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestType.REQUEST)); 785 } else { 786 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 787 } 788 } 789 790 private void registerSettingsCallbacks() { 791 // Watch for global HTTP proxy changes. 792 mSettingsObserver.observe( 793 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 794 EVENT_APPLY_GLOBAL_HTTP_PROXY); 795 796 // Watch for whether or not to keep mobile data always on. 797 mSettingsObserver.observe( 798 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 799 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 800 } 801 802 private synchronized int nextNetworkRequestId() { 803 return mNextNetworkRequestId++; 804 } 805 806 @VisibleForTesting 807 protected int reserveNetId() { 808 synchronized (mNetworkForNetId) { 809 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 810 int netId = mNextNetId; 811 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 812 // Make sure NetID unused. http://b/16815182 813 if (!mNetIdInUse.get(netId)) { 814 mNetIdInUse.put(netId, true); 815 return netId; 816 } 817 } 818 } 819 throw new IllegalStateException("No free netIds"); 820 } 821 822 private NetworkState getFilteredNetworkState(int networkType, int uid) { 823 NetworkInfo info = null; 824 LinkProperties lp = null; 825 NetworkCapabilities nc = null; 826 Network network = null; 827 String subscriberId = null; 828 829 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 830 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 831 if (nai != null) { 832 synchronized (nai) { 833 info = new NetworkInfo(nai.networkInfo); 834 lp = new LinkProperties(nai.linkProperties); 835 nc = new NetworkCapabilities(nai.networkCapabilities); 836 // Network objects are outwardly immutable so there is no point to duplicating. 837 // Duplicating also precludes sharing socket factories and connection pools. 838 network = nai.network; 839 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 840 } 841 info.setType(networkType); 842 } else { 843 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 844 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 845 info.setIsAvailable(true); 846 lp = new LinkProperties(); 847 nc = new NetworkCapabilities(); 848 network = null; 849 } 850 info = getFilteredNetworkInfo(info, lp, uid); 851 } 852 853 return new NetworkState(info, lp, nc, network, subscriberId, null); 854 } 855 856 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 857 if (network == null) { 858 return null; 859 } 860 synchronized (mNetworkForNetId) { 861 return mNetworkForNetId.get(network.netId); 862 } 863 }; 864 865 private Network[] getVpnUnderlyingNetworks(int uid) { 866 if (!mLockdownEnabled) { 867 int user = UserHandle.getUserId(uid); 868 synchronized (mVpns) { 869 Vpn vpn = mVpns.get(user); 870 if (vpn != null && vpn.appliesToUid(uid)) { 871 return vpn.getUnderlyingNetworks(); 872 } 873 } 874 } 875 return null; 876 } 877 878 private NetworkState getUnfilteredActiveNetworkState(int uid) { 879 NetworkInfo info = null; 880 LinkProperties lp = null; 881 NetworkCapabilities nc = null; 882 Network network = null; 883 String subscriberId = null; 884 885 NetworkAgentInfo nai = getDefaultNetwork(); 886 887 final Network[] networks = getVpnUnderlyingNetworks(uid); 888 if (networks != null) { 889 // getUnderlyingNetworks() returns: 890 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 891 // empty array => the VPN explicitly said "no default network". 892 // non-empty array => the VPN specified one or more default networks; we use the 893 // first one. 894 if (networks.length > 0) { 895 nai = getNetworkAgentInfoForNetwork(networks[0]); 896 } else { 897 nai = null; 898 } 899 } 900 901 if (nai != null) { 902 synchronized (nai) { 903 info = new NetworkInfo(nai.networkInfo); 904 lp = new LinkProperties(nai.linkProperties); 905 nc = new NetworkCapabilities(nai.networkCapabilities); 906 // Network objects are outwardly immutable so there is no point to duplicating. 907 // Duplicating also precludes sharing socket factories and connection pools. 908 network = nai.network; 909 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 910 } 911 } 912 913 return new NetworkState(info, lp, nc, network, subscriberId, null); 914 } 915 916 /** 917 * Check if UID should be blocked from using the network with the given LinkProperties. 918 */ 919 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 920 final boolean networkCostly; 921 final int uidRules; 922 923 final String iface = (lp == null ? "" : lp.getInterfaceName()); 924 synchronized (mRulesLock) { 925 networkCostly = mMeteredIfaces.contains(iface); 926 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 927 } 928 929 if (uidRules == RULE_REJECT_ALL) { 930 return true; 931 } else if ((uidRules == RULE_REJECT_METERED) && networkCostly) { 932 return true; 933 } else { 934 return false; 935 } 936 } 937 938 private void maybeLogBlockedNetworkInfo(NetworkInfo ni, int uid) { 939 if (ni == null || !LOGD_BLOCKED_NETWORKINFO) return; 940 boolean removed = false; 941 boolean added = false; 942 synchronized (mBlockedAppUids) { 943 if (ni.getDetailedState() == DetailedState.BLOCKED && mBlockedAppUids.add(uid)) { 944 added = true; 945 } else if (ni.isConnected() && mBlockedAppUids.remove(uid)) { 946 removed = true; 947 } 948 } 949 if (added) log("Returning blocked NetworkInfo to uid=" + uid); 950 else if (removed) log("Returning unblocked NetworkInfo to uid=" + uid); 951 } 952 953 /** 954 * Return a filtered {@link NetworkInfo}, potentially marked 955 * {@link DetailedState#BLOCKED} based on 956 * {@link #isNetworkWithLinkPropertiesBlocked}. 957 */ 958 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 959 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 960 // network is blocked; clone and override state 961 info = new NetworkInfo(info); 962 info.setDetailedState(DetailedState.BLOCKED, null, null); 963 } 964 if (info != null && mLockdownTracker != null) { 965 info = mLockdownTracker.augmentNetworkInfo(info); 966 if (VDBG) log("returning Locked NetworkInfo"); 967 } 968 return info; 969 } 970 971 /** 972 * Return NetworkInfo for the active (i.e., connected) network interface. 973 * It is assumed that at most one network is active at a time. If more 974 * than one is active, it is indeterminate which will be returned. 975 * @return the info for the active network, or {@code null} if none is 976 * active 977 */ 978 @Override 979 public NetworkInfo getActiveNetworkInfo() { 980 enforceAccessPermission(); 981 final int uid = Binder.getCallingUid(); 982 NetworkState state = getUnfilteredActiveNetworkState(uid); 983 NetworkInfo ni = getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 984 maybeLogBlockedNetworkInfo(ni, uid); 985 return ni; 986 } 987 988 @Override 989 public Network getActiveNetwork() { 990 enforceAccessPermission(); 991 return getActiveNetworkForUidInternal(Binder.getCallingUid()); 992 } 993 994 @Override 995 public Network getActiveNetworkForUid(int uid) { 996 enforceConnectivityInternalPermission(); 997 return getActiveNetworkForUidInternal(uid); 998 } 999 1000 private Network getActiveNetworkForUidInternal(final int uid) { 1001 final int user = UserHandle.getUserId(uid); 1002 int vpnNetId = NETID_UNSET; 1003 synchronized (mVpns) { 1004 final Vpn vpn = mVpns.get(user); 1005 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 1006 } 1007 NetworkAgentInfo nai; 1008 if (vpnNetId != NETID_UNSET) { 1009 synchronized (mNetworkForNetId) { 1010 nai = mNetworkForNetId.get(vpnNetId); 1011 } 1012 if (nai != null) return nai.network; 1013 } 1014 nai = getDefaultNetwork(); 1015 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 1016 return nai != null ? nai.network : null; 1017 } 1018 1019 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1020 enforceAccessPermission(); 1021 final int uid = Binder.getCallingUid(); 1022 NetworkState state = getUnfilteredActiveNetworkState(uid); 1023 return state.networkInfo; 1024 } 1025 1026 @Override 1027 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1028 enforceConnectivityInternalPermission(); 1029 NetworkState state = getUnfilteredActiveNetworkState(uid); 1030 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1031 } 1032 1033 @Override 1034 public NetworkInfo getNetworkInfo(int networkType) { 1035 enforceAccessPermission(); 1036 final int uid = Binder.getCallingUid(); 1037 if (getVpnUnderlyingNetworks(uid) != null) { 1038 // A VPN is active, so we may need to return one of its underlying networks. This 1039 // information is not available in LegacyTypeTracker, so we have to get it from 1040 // getUnfilteredActiveNetworkState. 1041 NetworkState state = getUnfilteredActiveNetworkState(uid); 1042 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1043 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1044 } 1045 } 1046 NetworkState state = getFilteredNetworkState(networkType, uid); 1047 return state.networkInfo; 1048 } 1049 1050 @Override 1051 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1052 enforceAccessPermission(); 1053 final int uid = Binder.getCallingUid(); 1054 NetworkInfo info = null; 1055 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1056 if (nai != null) { 1057 synchronized (nai) { 1058 info = new NetworkInfo(nai.networkInfo); 1059 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1060 } 1061 } 1062 return info; 1063 } 1064 1065 @Override 1066 public NetworkInfo[] getAllNetworkInfo() { 1067 enforceAccessPermission(); 1068 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1069 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1070 networkType++) { 1071 NetworkInfo info = getNetworkInfo(networkType); 1072 if (info != null) { 1073 result.add(info); 1074 } 1075 } 1076 return result.toArray(new NetworkInfo[result.size()]); 1077 } 1078 1079 @Override 1080 public Network getNetworkForType(int networkType) { 1081 enforceAccessPermission(); 1082 final int uid = Binder.getCallingUid(); 1083 NetworkState state = getFilteredNetworkState(networkType, uid); 1084 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1085 return state.network; 1086 } 1087 return null; 1088 } 1089 1090 @Override 1091 public Network[] getAllNetworks() { 1092 enforceAccessPermission(); 1093 synchronized (mNetworkForNetId) { 1094 final Network[] result = new Network[mNetworkForNetId.size()]; 1095 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1096 result[i] = mNetworkForNetId.valueAt(i).network; 1097 } 1098 return result; 1099 } 1100 } 1101 1102 @Override 1103 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1104 // The basic principle is: if an app's traffic could possibly go over a 1105 // network, without the app doing anything multinetwork-specific, 1106 // (hence, by "default"), then include that network's capabilities in 1107 // the array. 1108 // 1109 // In the normal case, app traffic only goes over the system's default 1110 // network connection, so that's the only network returned. 1111 // 1112 // With a VPN in force, some app traffic may go into the VPN, and thus 1113 // over whatever underlying networks the VPN specifies, while other app 1114 // traffic may go over the system default network (e.g.: a split-tunnel 1115 // VPN, or an app disallowed by the VPN), so the set of networks 1116 // returned includes the VPN's underlying networks and the system 1117 // default. 1118 enforceAccessPermission(); 1119 1120 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1121 1122 NetworkAgentInfo nai = getDefaultNetwork(); 1123 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1124 if (nc != null) { 1125 result.put(nai.network, nc); 1126 } 1127 1128 if (!mLockdownEnabled) { 1129 synchronized (mVpns) { 1130 Vpn vpn = mVpns.get(userId); 1131 if (vpn != null) { 1132 Network[] networks = vpn.getUnderlyingNetworks(); 1133 if (networks != null) { 1134 for (Network network : networks) { 1135 nai = getNetworkAgentInfoForNetwork(network); 1136 nc = getNetworkCapabilitiesInternal(nai); 1137 if (nc != null) { 1138 result.put(network, nc); 1139 } 1140 } 1141 } 1142 } 1143 } 1144 } 1145 1146 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1147 out = result.values().toArray(out); 1148 return out; 1149 } 1150 1151 @Override 1152 public boolean isNetworkSupported(int networkType) { 1153 enforceAccessPermission(); 1154 return mLegacyTypeTracker.isTypeSupported(networkType); 1155 } 1156 1157 /** 1158 * Return LinkProperties for the active (i.e., connected) default 1159 * network interface. It is assumed that at most one default network 1160 * is active at a time. If more than one is active, it is indeterminate 1161 * which will be returned. 1162 * @return the ip properties for the active network, or {@code null} if 1163 * none is active 1164 */ 1165 @Override 1166 public LinkProperties getActiveLinkProperties() { 1167 enforceAccessPermission(); 1168 final int uid = Binder.getCallingUid(); 1169 NetworkState state = getUnfilteredActiveNetworkState(uid); 1170 return state.linkProperties; 1171 } 1172 1173 @Override 1174 public LinkProperties getLinkPropertiesForType(int networkType) { 1175 enforceAccessPermission(); 1176 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1177 if (nai != null) { 1178 synchronized (nai) { 1179 return new LinkProperties(nai.linkProperties); 1180 } 1181 } 1182 return null; 1183 } 1184 1185 // TODO - this should be ALL networks 1186 @Override 1187 public LinkProperties getLinkProperties(Network network) { 1188 enforceAccessPermission(); 1189 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1190 if (nai != null) { 1191 synchronized (nai) { 1192 return new LinkProperties(nai.linkProperties); 1193 } 1194 } 1195 return null; 1196 } 1197 1198 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1199 if (nai != null) { 1200 synchronized (nai) { 1201 if (nai.networkCapabilities != null) { 1202 return new NetworkCapabilities(nai.networkCapabilities); 1203 } 1204 } 1205 } 1206 return null; 1207 } 1208 1209 @Override 1210 public NetworkCapabilities getNetworkCapabilities(Network network) { 1211 enforceAccessPermission(); 1212 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1213 } 1214 1215 @Override 1216 public NetworkState[] getAllNetworkState() { 1217 // Require internal since we're handing out IMSI details 1218 enforceConnectivityInternalPermission(); 1219 1220 final ArrayList<NetworkState> result = Lists.newArrayList(); 1221 for (Network network : getAllNetworks()) { 1222 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1223 if (nai != null) { 1224 synchronized (nai) { 1225 final String subscriberId = (nai.networkMisc != null) 1226 ? nai.networkMisc.subscriberId : null; 1227 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1228 nai.networkCapabilities, network, subscriberId, null)); 1229 } 1230 } 1231 } 1232 return result.toArray(new NetworkState[result.size()]); 1233 } 1234 1235 @Override 1236 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1237 enforceAccessPermission(); 1238 final int uid = Binder.getCallingUid(); 1239 final long token = Binder.clearCallingIdentity(); 1240 try { 1241 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1242 if (state.networkInfo != null) { 1243 try { 1244 return mPolicyManager.getNetworkQuotaInfo(state); 1245 } catch (RemoteException e) { 1246 } 1247 } 1248 return null; 1249 } finally { 1250 Binder.restoreCallingIdentity(token); 1251 } 1252 } 1253 1254 @Override 1255 public boolean isActiveNetworkMetered() { 1256 enforceAccessPermission(); 1257 final int uid = Binder.getCallingUid(); 1258 final long token = Binder.clearCallingIdentity(); 1259 try { 1260 return isActiveNetworkMeteredUnchecked(uid); 1261 } finally { 1262 Binder.restoreCallingIdentity(token); 1263 } 1264 } 1265 1266 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1267 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1268 if (state.networkInfo != null) { 1269 try { 1270 return mPolicyManager.isNetworkMetered(state); 1271 } catch (RemoteException e) { 1272 } 1273 } 1274 return false; 1275 } 1276 1277 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1278 @Override 1279 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1280 int deviceType = Integer.parseInt(label); 1281 sendDataActivityBroadcast(deviceType, active, tsNanos); 1282 } 1283 }; 1284 1285 /** 1286 * Ensure that a network route exists to deliver traffic to the specified 1287 * host via the specified network interface. 1288 * @param networkType the type of the network over which traffic to the 1289 * specified host is to be routed 1290 * @param hostAddress the IP address of the host to which the route is 1291 * desired 1292 * @return {@code true} on success, {@code false} on failure 1293 */ 1294 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1295 enforceChangePermission(); 1296 if (mProtectedNetworks.contains(networkType)) { 1297 enforceConnectivityInternalPermission(); 1298 } 1299 1300 InetAddress addr; 1301 try { 1302 addr = InetAddress.getByAddress(hostAddress); 1303 } catch (UnknownHostException e) { 1304 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1305 return false; 1306 } 1307 1308 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1309 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1310 return false; 1311 } 1312 1313 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1314 if (nai == null) { 1315 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1316 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1317 } else { 1318 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1319 } 1320 return false; 1321 } 1322 1323 DetailedState netState; 1324 synchronized (nai) { 1325 netState = nai.networkInfo.getDetailedState(); 1326 } 1327 1328 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1329 if (VDBG) { 1330 log("requestRouteToHostAddress on down network " 1331 + "(" + networkType + ") - dropped" 1332 + " netState=" + netState); 1333 } 1334 return false; 1335 } 1336 1337 final int uid = Binder.getCallingUid(); 1338 final long token = Binder.clearCallingIdentity(); 1339 try { 1340 LinkProperties lp; 1341 int netId; 1342 synchronized (nai) { 1343 lp = nai.linkProperties; 1344 netId = nai.network.netId; 1345 } 1346 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1347 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1348 return ok; 1349 } finally { 1350 Binder.restoreCallingIdentity(token); 1351 } 1352 } 1353 1354 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1355 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1356 if (bestRoute == null) { 1357 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1358 } else { 1359 String iface = bestRoute.getInterface(); 1360 if (bestRoute.getGateway().equals(addr)) { 1361 // if there is no better route, add the implied hostroute for our gateway 1362 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1363 } else { 1364 // if we will connect to this through another route, add a direct route 1365 // to it's gateway 1366 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1367 } 1368 } 1369 if (DBG) log("Adding legacy route " + bestRoute + 1370 " for UID/PID " + uid + "/" + Binder.getCallingPid()); 1371 try { 1372 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1373 } catch (Exception e) { 1374 // never crash - catch them all 1375 if (DBG) loge("Exception trying to add a route: " + e); 1376 return false; 1377 } 1378 return true; 1379 } 1380 1381 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1382 @Override 1383 public void onUidRulesChanged(int uid, int uidRules) { 1384 // caller is NPMS, since we only register with them 1385 if (LOGD_RULES) { 1386 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1387 } 1388 1389 synchronized (mRulesLock) { 1390 // skip update when we've already applied rules 1391 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1392 if (oldRules == uidRules) return; 1393 1394 mUidRules.put(uid, uidRules); 1395 } 1396 1397 // TODO: notify UID when it has requested targeted updates 1398 } 1399 1400 @Override 1401 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1402 // caller is NPMS, since we only register with them 1403 if (LOGD_RULES) { 1404 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1405 } 1406 1407 synchronized (mRulesLock) { 1408 mMeteredIfaces.clear(); 1409 for (String iface : meteredIfaces) { 1410 mMeteredIfaces.add(iface); 1411 } 1412 } 1413 } 1414 1415 @Override 1416 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1417 // caller is NPMS, since we only register with them 1418 if (LOGD_RULES) { 1419 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1420 } 1421 } 1422 1423 @Override 1424 public void onRestrictBackgroundWhitelistChanged(int uid, boolean whitelisted) { 1425 if (LOGD_RULES) { 1426 // caller is NPMS, since we only register with them 1427 log("onRestrictBackgroundWhitelistChanged(uid=" + uid + ", whitelisted=" 1428 + whitelisted + ")"); 1429 } 1430 } 1431 }; 1432 1433 /** 1434 * Require that the caller is either in the same user or has appropriate permission to interact 1435 * across users. 1436 * 1437 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1438 */ 1439 private void enforceCrossUserPermission(int userId) { 1440 if (userId == UserHandle.getCallingUserId()) { 1441 // Not a cross-user call. 1442 return; 1443 } 1444 mContext.enforceCallingOrSelfPermission( 1445 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1446 "ConnectivityService"); 1447 } 1448 1449 private void enforceInternetPermission() { 1450 mContext.enforceCallingOrSelfPermission( 1451 android.Manifest.permission.INTERNET, 1452 "ConnectivityService"); 1453 } 1454 1455 private void enforceAccessPermission() { 1456 mContext.enforceCallingOrSelfPermission( 1457 android.Manifest.permission.ACCESS_NETWORK_STATE, 1458 "ConnectivityService"); 1459 } 1460 1461 private void enforceChangePermission() { 1462 ConnectivityManager.enforceChangePermission(mContext); 1463 } 1464 1465 private void enforceTetherAccessPermission() { 1466 mContext.enforceCallingOrSelfPermission( 1467 android.Manifest.permission.ACCESS_NETWORK_STATE, 1468 "ConnectivityService"); 1469 } 1470 1471 private void enforceConnectivityInternalPermission() { 1472 mContext.enforceCallingOrSelfPermission( 1473 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1474 "ConnectivityService"); 1475 } 1476 1477 private void enforceKeepalivePermission() { 1478 mContext.enforceCallingOrSelfPermission(KeepaliveTracker.PERMISSION, "ConnectivityService"); 1479 } 1480 1481 public void sendConnectedBroadcast(NetworkInfo info) { 1482 enforceConnectivityInternalPermission(); 1483 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1484 } 1485 1486 private void sendInetConditionBroadcast(NetworkInfo info) { 1487 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1488 } 1489 1490 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1491 if (mLockdownTracker != null) { 1492 info = mLockdownTracker.augmentNetworkInfo(info); 1493 } 1494 1495 Intent intent = new Intent(bcastType); 1496 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1497 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1498 if (info.isFailover()) { 1499 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1500 info.setFailover(false); 1501 } 1502 if (info.getReason() != null) { 1503 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1504 } 1505 if (info.getExtraInfo() != null) { 1506 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1507 info.getExtraInfo()); 1508 } 1509 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1510 return intent; 1511 } 1512 1513 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1514 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1515 } 1516 1517 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1518 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1519 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1520 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1521 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1522 final long ident = Binder.clearCallingIdentity(); 1523 try { 1524 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1525 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1526 } finally { 1527 Binder.restoreCallingIdentity(ident); 1528 } 1529 } 1530 1531 private void sendStickyBroadcast(Intent intent) { 1532 synchronized(this) { 1533 if (!mSystemReady) { 1534 mInitialBroadcast = new Intent(intent); 1535 } 1536 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1537 if (VDBG) { 1538 log("sendStickyBroadcast: action=" + intent.getAction()); 1539 } 1540 1541 Bundle options = null; 1542 final long ident = Binder.clearCallingIdentity(); 1543 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1544 final NetworkInfo ni = intent.getParcelableExtra( 1545 ConnectivityManager.EXTRA_NETWORK_INFO); 1546 if (ni.getType() == ConnectivityManager.TYPE_MOBILE_SUPL) { 1547 intent.setAction(ConnectivityManager.CONNECTIVITY_ACTION_SUPL); 1548 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1549 } else { 1550 BroadcastOptions opts = BroadcastOptions.makeBasic(); 1551 opts.setMaxManifestReceiverApiLevel(Build.VERSION_CODES.M); 1552 options = opts.toBundle(); 1553 } 1554 final IBatteryStats bs = BatteryStatsService.getService(); 1555 try { 1556 bs.noteConnectivityChanged(intent.getIntExtra( 1557 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1558 ni != null ? ni.getState().toString() : "?"); 1559 } catch (RemoteException e) { 1560 } 1561 } 1562 try { 1563 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL, options); 1564 } finally { 1565 Binder.restoreCallingIdentity(ident); 1566 } 1567 } 1568 } 1569 1570 void systemReady() { 1571 loadGlobalProxy(); 1572 1573 synchronized(this) { 1574 mSystemReady = true; 1575 if (mInitialBroadcast != null) { 1576 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1577 mInitialBroadcast = null; 1578 } 1579 } 1580 // load the global proxy at startup 1581 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1582 1583 // Try bringing up tracker, but KeyStore won't be ready yet for secondary users so wait 1584 // for user to unlock device too. 1585 updateLockdownVpn(); 1586 1587 // Configure whether mobile data is always on. 1588 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1589 1590 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1591 1592 mPermissionMonitor.startMonitoring(); 1593 } 1594 1595 /** 1596 * Setup data activity tracking for the given network. 1597 * 1598 * Every {@code setupDataActivityTracking} should be paired with a 1599 * {@link #removeDataActivityTracking} for cleanup. 1600 */ 1601 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1602 final String iface = networkAgent.linkProperties.getInterfaceName(); 1603 1604 final int timeout; 1605 int type = ConnectivityManager.TYPE_NONE; 1606 1607 if (networkAgent.networkCapabilities.hasTransport( 1608 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1609 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1610 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1611 10); 1612 type = ConnectivityManager.TYPE_MOBILE; 1613 } else if (networkAgent.networkCapabilities.hasTransport( 1614 NetworkCapabilities.TRANSPORT_WIFI)) { 1615 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1616 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1617 15); 1618 type = ConnectivityManager.TYPE_WIFI; 1619 } else { 1620 // do not track any other networks 1621 timeout = 0; 1622 } 1623 1624 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1625 try { 1626 mNetd.addIdleTimer(iface, timeout, type); 1627 } catch (Exception e) { 1628 // You shall not crash! 1629 loge("Exception in setupDataActivityTracking " + e); 1630 } 1631 } 1632 } 1633 1634 /** 1635 * Remove data activity tracking when network disconnects. 1636 */ 1637 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1638 final String iface = networkAgent.linkProperties.getInterfaceName(); 1639 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1640 1641 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1642 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1643 try { 1644 // the call fails silently if no idletimer setup for this interface 1645 mNetd.removeIdleTimer(iface); 1646 } catch (Exception e) { 1647 loge("Exception in removeDataActivityTracking " + e); 1648 } 1649 } 1650 } 1651 1652 /** 1653 * Reads the network specific MTU size from reources. 1654 * and set it on it's iface. 1655 */ 1656 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1657 final String iface = newLp.getInterfaceName(); 1658 final int mtu = newLp.getMtu(); 1659 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1660 if (VDBG) log("identical MTU - not setting"); 1661 return; 1662 } 1663 1664 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1665 if (mtu != 0) loge("Unexpected mtu value: " + mtu + ", " + iface); 1666 return; 1667 } 1668 1669 // Cannot set MTU without interface name 1670 if (TextUtils.isEmpty(iface)) { 1671 loge("Setting MTU size with null iface."); 1672 return; 1673 } 1674 1675 try { 1676 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 1677 mNetd.setMtu(iface, mtu); 1678 } catch (Exception e) { 1679 Slog.e(TAG, "exception in setMtu()" + e); 1680 } 1681 } 1682 1683 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1684 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1685 1686 // Overridden for testing purposes to avoid writing to SystemProperties. 1687 @VisibleForTesting 1688 protected int getDefaultTcpRwnd() { 1689 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1690 } 1691 1692 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1693 if (isDefaultNetwork(nai) == false) { 1694 return; 1695 } 1696 1697 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1698 String[] values = null; 1699 if (tcpBufferSizes != null) { 1700 values = tcpBufferSizes.split(","); 1701 } 1702 1703 if (values == null || values.length != 6) { 1704 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1705 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1706 values = tcpBufferSizes.split(","); 1707 } 1708 1709 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1710 1711 try { 1712 if (VDBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1713 1714 final String prefix = "/sys/kernel/ipv4/tcp_"; 1715 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1716 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1717 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1718 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1719 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1720 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1721 mCurrentTcpBufferSizes = tcpBufferSizes; 1722 } catch (IOException e) { 1723 loge("Can't set TCP buffer sizes:" + e); 1724 } 1725 1726 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1727 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1728 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1729 if (rwndValue != 0) { 1730 SystemProperties.set(sysctlKey, rwndValue.toString()); 1731 } 1732 } 1733 1734 private void flushVmDnsCache() { 1735 /* 1736 * Tell the VMs to toss their DNS caches 1737 */ 1738 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1739 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1740 /* 1741 * Connectivity events can happen before boot has completed ... 1742 */ 1743 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1744 final long ident = Binder.clearCallingIdentity(); 1745 try { 1746 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1747 } finally { 1748 Binder.restoreCallingIdentity(ident); 1749 } 1750 } 1751 1752 @Override 1753 public int getRestoreDefaultNetworkDelay(int networkType) { 1754 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1755 NETWORK_RESTORE_DELAY_PROP_NAME); 1756 if(restoreDefaultNetworkDelayStr != null && 1757 restoreDefaultNetworkDelayStr.length() != 0) { 1758 try { 1759 return Integer.parseInt(restoreDefaultNetworkDelayStr); 1760 } catch (NumberFormatException e) { 1761 } 1762 } 1763 // if the system property isn't set, use the value for the apn type 1764 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1765 1766 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1767 (mNetConfigs[networkType] != null)) { 1768 ret = mNetConfigs[networkType].restoreTime; 1769 } 1770 return ret; 1771 } 1772 1773 private boolean argsContain(String[] args, String target) { 1774 for (String arg : args) { 1775 if (arg.equals(target)) return true; 1776 } 1777 return false; 1778 } 1779 1780 private void dumpNetworkDiagnostics(IndentingPrintWriter pw) { 1781 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1782 final long DIAG_TIME_MS = 5000; 1783 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1784 // Start gathering diagnostic information. 1785 netDiags.add(new NetworkDiagnostics( 1786 nai.network, 1787 new LinkProperties(nai.linkProperties), // Must be a copy. 1788 DIAG_TIME_MS)); 1789 } 1790 1791 for (NetworkDiagnostics netDiag : netDiags) { 1792 pw.println(); 1793 netDiag.waitForMeasurements(); 1794 netDiag.dump(pw); 1795 } 1796 } 1797 1798 @Override 1799 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1800 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1801 if (mContext.checkCallingOrSelfPermission( 1802 android.Manifest.permission.DUMP) 1803 != PackageManager.PERMISSION_GRANTED) { 1804 pw.println("Permission Denial: can't dump ConnectivityService " + 1805 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1806 Binder.getCallingUid()); 1807 return; 1808 } 1809 1810 if (argsContain(args, "--diag")) { 1811 dumpNetworkDiagnostics(pw); 1812 return; 1813 } 1814 1815 pw.print("NetworkFactories for:"); 1816 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1817 pw.print(" " + nfi.name); 1818 } 1819 pw.println(); 1820 pw.println(); 1821 1822 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 1823 pw.print("Active default network: "); 1824 if (defaultNai == null) { 1825 pw.println("none"); 1826 } else { 1827 pw.println(defaultNai.network.netId); 1828 } 1829 pw.println(); 1830 1831 pw.println("Current Networks:"); 1832 pw.increaseIndent(); 1833 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1834 pw.println(nai.toString()); 1835 pw.increaseIndent(); 1836 pw.println("Requests:"); 1837 pw.increaseIndent(); 1838 for (int i = 0; i < nai.networkRequests.size(); i++) { 1839 pw.println(nai.networkRequests.valueAt(i).toString()); 1840 } 1841 pw.decreaseIndent(); 1842 pw.println("Lingered:"); 1843 pw.increaseIndent(); 1844 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1845 pw.decreaseIndent(); 1846 pw.decreaseIndent(); 1847 } 1848 pw.decreaseIndent(); 1849 pw.println(); 1850 1851 pw.println("Network Requests:"); 1852 pw.increaseIndent(); 1853 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1854 pw.println(nri.toString()); 1855 } 1856 pw.println(); 1857 pw.decreaseIndent(); 1858 1859 mLegacyTypeTracker.dump(pw); 1860 1861 synchronized (this) { 1862 pw.print("mNetTransitionWakeLock: currently " + 1863 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1864 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1865 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1866 } else { 1867 pw.println(", last requested never"); 1868 } 1869 } 1870 1871 pw.println(); 1872 mTethering.dump(fd, pw, args); 1873 1874 pw.println(); 1875 mKeepaliveTracker.dump(pw); 1876 1877 pw.println(); 1878 1879 if (mInetLog != null && mInetLog.size() > 0) { 1880 pw.println(); 1881 pw.println("Inet condition reports:"); 1882 pw.increaseIndent(); 1883 for(int i = 0; i < mInetLog.size(); i++) { 1884 pw.println(mInetLog.get(i)); 1885 } 1886 pw.decreaseIndent(); 1887 } 1888 1889 if (argsContain(args, "--short") == false) { 1890 pw.println(); 1891 synchronized (mValidationLogs) { 1892 pw.println("mValidationLogs (most recent first):"); 1893 for (Pair<Network,ReadOnlyLocalLog> p : mValidationLogs) { 1894 pw.println(p.first); 1895 pw.increaseIndent(); 1896 p.second.dump(fd, pw, args); 1897 pw.decreaseIndent(); 1898 } 1899 } 1900 1901 pw.println(); 1902 pw.println("mNetworkRequestInfoLogs (most recent first):"); 1903 pw.increaseIndent(); 1904 mNetworkRequestInfoLogs.reverseDump(fd, pw, args); 1905 pw.decreaseIndent(); 1906 } 1907 } 1908 1909 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, int what) { 1910 if (nai.network == null) return false; 1911 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1912 if (officialNai != null && officialNai.equals(nai)) return true; 1913 if (officialNai != null || VDBG) { 1914 final String msg = sMagicDecoderRing.get(what, Integer.toString(what)); 1915 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1916 " - " + nai); 1917 } 1918 return false; 1919 } 1920 1921 private boolean isRequest(NetworkRequest request) { 1922 return mNetworkRequests.get(request).isRequest(); 1923 } 1924 1925 // must be stateless - things change under us. 1926 private class NetworkStateTrackerHandler extends Handler { 1927 public NetworkStateTrackerHandler(Looper looper) { 1928 super(looper); 1929 } 1930 1931 private boolean maybeHandleAsyncChannelMessage(Message msg) { 1932 switch (msg.what) { 1933 default: 1934 return false; 1935 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1936 handleAsyncChannelHalfConnect(msg); 1937 break; 1938 } 1939 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1940 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1941 if (nai != null) nai.asyncChannel.disconnect(); 1942 break; 1943 } 1944 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1945 handleAsyncChannelDisconnected(msg); 1946 break; 1947 } 1948 } 1949 return true; 1950 } 1951 1952 private void maybeHandleNetworkAgentMessage(Message msg) { 1953 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1954 if (nai == null) { 1955 if (VDBG) { 1956 final String what = sMagicDecoderRing.get(msg.what, Integer.toString(msg.what)); 1957 log(String.format("%s from unknown NetworkAgent", what)); 1958 } 1959 return; 1960 } 1961 1962 switch (msg.what) { 1963 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1964 final NetworkCapabilities networkCapabilities = (NetworkCapabilities) msg.obj; 1965 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL) || 1966 networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 1967 Slog.wtf(TAG, "BUG: " + nai + " has CS-managed capability."); 1968 } 1969 if (nai.created && !nai.networkCapabilities.equalImmutableCapabilities( 1970 networkCapabilities)) { 1971 Slog.wtf(TAG, "BUG: " + nai + " changed immutable capabilities: " 1972 + nai.networkCapabilities + " -> " + networkCapabilities); 1973 } 1974 updateCapabilities(nai, networkCapabilities); 1975 break; 1976 } 1977 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1978 if (VDBG) { 1979 log("Update of LinkProperties for " + nai.name() + 1980 "; created=" + nai.created); 1981 } 1982 LinkProperties oldLp = nai.linkProperties; 1983 synchronized (nai) { 1984 nai.linkProperties = (LinkProperties)msg.obj; 1985 } 1986 if (nai.created) updateLinkProperties(nai, oldLp); 1987 break; 1988 } 1989 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1990 NetworkInfo info = (NetworkInfo) msg.obj; 1991 updateNetworkInfo(nai, info); 1992 break; 1993 } 1994 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1995 Integer score = (Integer) msg.obj; 1996 if (score != null) updateNetworkScore(nai, score.intValue()); 1997 break; 1998 } 1999 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 2000 try { 2001 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2002 } catch (Exception e) { 2003 // Never crash! 2004 loge("Exception in addVpnUidRanges: " + e); 2005 } 2006 break; 2007 } 2008 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 2009 try { 2010 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2011 } catch (Exception e) { 2012 // Never crash! 2013 loge("Exception in removeVpnUidRanges: " + e); 2014 } 2015 break; 2016 } 2017 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 2018 if (nai.created && !nai.networkMisc.explicitlySelected) { 2019 loge("ERROR: created network explicitly selected."); 2020 } 2021 nai.networkMisc.explicitlySelected = true; 2022 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 2023 break; 2024 } 2025 case NetworkAgent.EVENT_PACKET_KEEPALIVE: { 2026 mKeepaliveTracker.handleEventPacketKeepalive(nai, msg); 2027 break; 2028 } 2029 } 2030 } 2031 2032 private boolean maybeHandleNetworkMonitorMessage(Message msg) { 2033 switch (msg.what) { 2034 default: 2035 return false; 2036 case NetworkMonitor.EVENT_NETWORK_TESTED: { 2037 final NetworkAgentInfo nai; 2038 synchronized (mNetworkForNetId) { 2039 nai = mNetworkForNetId.get(msg.arg2); 2040 } 2041 if (nai != null) { 2042 final boolean valid = 2043 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2044 if (DBG) log(nai.name() + " validation " + (valid ? "passed" : "failed") + 2045 (msg.obj == null ? "" : " with redirect to " + (String)msg.obj)); 2046 if (valid != nai.lastValidated) { 2047 final int oldScore = nai.getCurrentScore(); 2048 nai.lastValidated = valid; 2049 nai.everValidated |= valid; 2050 updateCapabilities(nai, nai.networkCapabilities); 2051 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2052 if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); 2053 } 2054 updateInetCondition(nai); 2055 // Let the NetworkAgent know the state of its network 2056 Bundle redirectUrlBundle = new Bundle(); 2057 redirectUrlBundle.putString(NetworkAgent.REDIRECT_URL_KEY, (String)msg.obj); 2058 nai.asyncChannel.sendMessage( 2059 NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2060 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2061 0, redirectUrlBundle); 2062 } 2063 break; 2064 } 2065 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2066 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2067 if (isLiveNetworkAgent(nai, msg.what)) { 2068 handleLingerComplete(nai); 2069 } 2070 break; 2071 } 2072 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2073 final int netId = msg.arg2; 2074 final boolean visible = (msg.arg1 != 0); 2075 final NetworkAgentInfo nai; 2076 synchronized (mNetworkForNetId) { 2077 nai = mNetworkForNetId.get(netId); 2078 } 2079 // If captive portal status has changed, update capabilities. 2080 if (nai != null && (visible != nai.lastCaptivePortalDetected)) { 2081 nai.lastCaptivePortalDetected = visible; 2082 nai.everCaptivePortalDetected |= visible; 2083 updateCapabilities(nai, nai.networkCapabilities); 2084 } 2085 if (!visible) { 2086 setProvNotificationVisibleIntent(false, netId, null, 0, null, null, false); 2087 } else { 2088 if (nai == null) { 2089 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2090 break; 2091 } 2092 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2093 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), 2094 (PendingIntent)msg.obj, nai.networkMisc.explicitlySelected); 2095 } 2096 break; 2097 } 2098 } 2099 return true; 2100 } 2101 2102 @Override 2103 public void handleMessage(Message msg) { 2104 if (!maybeHandleAsyncChannelMessage(msg) && !maybeHandleNetworkMonitorMessage(msg)) { 2105 maybeHandleNetworkAgentMessage(msg); 2106 } 2107 } 2108 } 2109 2110 private void linger(NetworkAgentInfo nai) { 2111 nai.lingering = true; 2112 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 2113 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 2114 } 2115 2116 // Cancel any lingering so the linger timeout doesn't teardown a network. 2117 // This should be called when a network begins satisfying a NetworkRequest. 2118 // Note: depending on what state the NetworkMonitor is in (e.g., 2119 // if it's awaiting captive portal login, or if validation failed), this 2120 // may trigger a re-evaluation of the network. 2121 private void unlinger(NetworkAgentInfo nai) { 2122 nai.networkLingered.clear(); 2123 if (!nai.lingering) return; 2124 nai.lingering = false; 2125 if (VDBG) log("Canceling linger of " + nai.name()); 2126 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2127 } 2128 2129 private void handleAsyncChannelHalfConnect(Message msg) { 2130 AsyncChannel ac = (AsyncChannel) msg.obj; 2131 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2132 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2133 if (VDBG) log("NetworkFactory connected"); 2134 // A network factory has connected. Send it all current NetworkRequests. 2135 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2136 if (!nri.isRequest()) continue; 2137 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2138 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2139 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2140 } 2141 } else { 2142 loge("Error connecting NetworkFactory"); 2143 mNetworkFactoryInfos.remove(msg.obj); 2144 } 2145 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2146 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2147 if (VDBG) log("NetworkAgent connected"); 2148 // A network agent has requested a connection. Establish the connection. 2149 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2150 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2151 } else { 2152 loge("Error connecting NetworkAgent"); 2153 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2154 if (nai != null) { 2155 final boolean wasDefault = isDefaultNetwork(nai); 2156 synchronized (mNetworkForNetId) { 2157 mNetworkForNetId.remove(nai.network.netId); 2158 mNetIdInUse.delete(nai.network.netId); 2159 } 2160 // Just in case. 2161 mLegacyTypeTracker.remove(nai, wasDefault); 2162 } 2163 } 2164 } 2165 } 2166 2167 private void handleAsyncChannelDisconnected(Message msg) { 2168 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2169 if (nai != null) { 2170 if (DBG) { 2171 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2172 } 2173 // A network agent has disconnected. 2174 // TODO - if we move the logic to the network agent (have them disconnect 2175 // because they lost all their requests or because their score isn't good) 2176 // then they would disconnect organically, report their new state and then 2177 // disconnect the channel. 2178 if (nai.networkInfo.isConnected()) { 2179 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2180 null, null); 2181 } 2182 final boolean wasDefault = isDefaultNetwork(nai); 2183 if (wasDefault) { 2184 mDefaultInetConditionPublished = 0; 2185 } 2186 notifyIfacesChangedForNetworkStats(); 2187 // TODO - we shouldn't send CALLBACK_LOST to requests that can be satisfied 2188 // by other networks that are already connected. Perhaps that can be done by 2189 // sending all CALLBACK_LOST messages (for requests, not listens) at the end 2190 // of rematchAllNetworksAndRequests 2191 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2192 mKeepaliveTracker.handleStopAllKeepalives(nai, 2193 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 2194 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2195 mNetworkAgentInfos.remove(msg.replyTo); 2196 updateClat(null, nai.linkProperties, nai); 2197 synchronized (mNetworkForNetId) { 2198 // Remove the NetworkAgent, but don't mark the netId as 2199 // available until we've told netd to delete it below. 2200 mNetworkForNetId.remove(nai.network.netId); 2201 } 2202 // Remove all previously satisfied requests. 2203 for (int i = 0; i < nai.networkRequests.size(); i++) { 2204 NetworkRequest request = nai.networkRequests.valueAt(i); 2205 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2206 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2207 mNetworkForRequestId.remove(request.requestId); 2208 sendUpdatedScoreToFactories(request, 0); 2209 } 2210 } 2211 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2212 removeDataActivityTracking(nai); 2213 notifyLockdownVpn(nai); 2214 requestNetworkTransitionWakelock(nai.name()); 2215 } 2216 mLegacyTypeTracker.remove(nai, wasDefault); 2217 rematchAllNetworksAndRequests(null, 0); 2218 if (wasDefault && getDefaultNetwork() == null) { 2219 // Log that we lost the default network and there is no replacement. 2220 logDefaultNetworkEvent(null, nai); 2221 } 2222 if (nai.created) { 2223 // Tell netd to clean up the configuration for this network 2224 // (routing rules, DNS, etc). 2225 // This may be slow as it requires a lot of netd shelling out to ip and 2226 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2227 // after we've rematched networks with requests which should make a potential 2228 // fallback network the default or requested a new network from the 2229 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2230 // long time. 2231 try { 2232 mNetd.removeNetwork(nai.network.netId); 2233 } catch (Exception e) { 2234 loge("Exception removing network: " + e); 2235 } 2236 } 2237 synchronized (mNetworkForNetId) { 2238 mNetIdInUse.delete(nai.network.netId); 2239 } 2240 } else { 2241 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2242 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2243 } 2244 } 2245 2246 // If this method proves to be too slow then we can maintain a separate 2247 // pendingIntent => NetworkRequestInfo map. 2248 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2249 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2250 Intent intent = pendingIntent.getIntent(); 2251 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2252 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2253 if (existingPendingIntent != null && 2254 existingPendingIntent.getIntent().filterEquals(intent)) { 2255 return entry.getValue(); 2256 } 2257 } 2258 return null; 2259 } 2260 2261 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2262 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2263 2264 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2265 if (existingRequest != null) { // remove the existing request. 2266 if (DBG) log("Replacing " + existingRequest.request + " with " 2267 + nri.request + " because their intents matched."); 2268 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2269 } 2270 handleRegisterNetworkRequest(nri); 2271 } 2272 2273 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2274 mNetworkRequests.put(nri.request, nri); 2275 mNetworkRequestInfoLogs.log("REGISTER " + nri); 2276 if (!nri.isRequest()) { 2277 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2278 if (nri.request.networkCapabilities.hasSignalStrength() && 2279 network.satisfiesImmutableCapabilitiesOf(nri.request)) { 2280 updateSignalStrengthThresholds(network, "REGISTER", nri.request); 2281 } 2282 } 2283 } 2284 rematchAllNetworksAndRequests(null, 0); 2285 if (nri.isRequest() && mNetworkForRequestId.get(nri.request.requestId) == null) { 2286 sendUpdatedScoreToFactories(nri.request, 0); 2287 } 2288 } 2289 2290 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2291 int callingUid) { 2292 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2293 if (nri != null) { 2294 handleReleaseNetworkRequest(nri.request, callingUid); 2295 } 2296 } 2297 2298 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2299 // This is whether it is satisfying any NetworkRequests or were it to become validated, 2300 // would it have a chance of satisfying any NetworkRequests. 2301 private boolean unneeded(NetworkAgentInfo nai) { 2302 if (!nai.created || nai.isVPN() || nai.lingering) return false; 2303 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2304 // If this Network is already the highest scoring Network for a request, or if 2305 // there is hope for it to become one if it validated, then it is needed. 2306 if (nri.isRequest() && nai.satisfies(nri.request) && 2307 (nai.networkRequests.get(nri.request.requestId) != null || 2308 // Note that this catches two important cases: 2309 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2310 // is currently satisfying the request. This is desirable when 2311 // cellular ends up validating but WiFi does not. 2312 // 2. Unvalidated WiFi will not be reaped when validated cellular 2313 // is currently satisfying the request. This is desirable when 2314 // WiFi ends up validating and out scoring cellular. 2315 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2316 nai.getCurrentScoreAsValidated())) { 2317 return false; 2318 } 2319 } 2320 return true; 2321 } 2322 2323 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2324 NetworkRequestInfo nri = mNetworkRequests.get(request); 2325 if (nri != null) { 2326 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2327 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2328 return; 2329 } 2330 if (VDBG || (DBG && nri.isRequest())) log("releasing NetworkRequest " + request); 2331 nri.unlinkDeathRecipient(); 2332 mNetworkRequests.remove(request); 2333 synchronized (mUidToNetworkRequestCount) { 2334 int requests = mUidToNetworkRequestCount.get(nri.mUid, 0); 2335 if (requests < 1) { 2336 Slog.wtf(TAG, "BUG: too small request count " + requests + " for UID " + 2337 nri.mUid); 2338 } else if (requests == 1) { 2339 mUidToNetworkRequestCount.removeAt( 2340 mUidToNetworkRequestCount.indexOfKey(nri.mUid)); 2341 } else { 2342 mUidToNetworkRequestCount.put(nri.mUid, requests - 1); 2343 } 2344 } 2345 mNetworkRequestInfoLogs.log("RELEASE " + nri); 2346 if (nri.isRequest()) { 2347 // Find all networks that are satisfying this request and remove the request 2348 // from their request lists. 2349 // TODO - it's my understanding that for a request there is only a single 2350 // network satisfying it, so this loop is wasteful 2351 boolean wasKept = false; 2352 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2353 if (nai.networkRequests.get(nri.request.requestId) != null) { 2354 nai.networkRequests.remove(nri.request.requestId); 2355 if (VDBG) { 2356 log(" Removing from current network " + nai.name() + 2357 ", leaving " + nai.networkRequests.size() + 2358 " requests."); 2359 } 2360 if (unneeded(nai)) { 2361 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2362 teardownUnneededNetwork(nai); 2363 } else { 2364 // suspect there should only be one pass through here 2365 // but if any were kept do the check below 2366 wasKept |= true; 2367 } 2368 } 2369 } 2370 2371 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2372 if (nai != null) { 2373 mNetworkForRequestId.remove(nri.request.requestId); 2374 } 2375 // Maintain the illusion. When this request arrived, we might have pretended 2376 // that a network connected to serve it, even though the network was already 2377 // connected. Now that this request has gone away, we might have to pretend 2378 // that the network disconnected. LegacyTypeTracker will generate that 2379 // phantom disconnect for this type. 2380 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2381 boolean doRemove = true; 2382 if (wasKept) { 2383 // check if any of the remaining requests for this network are for the 2384 // same legacy type - if so, don't remove the nai 2385 for (int i = 0; i < nai.networkRequests.size(); i++) { 2386 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2387 if (otherRequest.legacyType == nri.request.legacyType && 2388 isRequest(otherRequest)) { 2389 if (DBG) log(" still have other legacy request - leaving"); 2390 doRemove = false; 2391 } 2392 } 2393 } 2394 2395 if (doRemove) { 2396 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2397 } 2398 } 2399 2400 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2401 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2402 nri.request); 2403 } 2404 } else { 2405 // listens don't have a singular affectedNetwork. Check all networks to see 2406 // if this listen request applies and remove it. 2407 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2408 nai.networkRequests.remove(nri.request.requestId); 2409 if (nri.request.networkCapabilities.hasSignalStrength() && 2410 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 2411 updateSignalStrengthThresholds(nai, "RELEASE", nri.request); 2412 } 2413 } 2414 } 2415 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2416 } 2417 } 2418 2419 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2420 enforceConnectivityInternalPermission(); 2421 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2422 accept ? 1 : 0, always ? 1: 0, network)); 2423 } 2424 2425 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2426 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2427 " accept=" + accept + " always=" + always); 2428 2429 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2430 if (nai == null) { 2431 // Nothing to do. 2432 return; 2433 } 2434 2435 if (nai.everValidated) { 2436 // The network validated while the dialog box was up. Take no action. 2437 return; 2438 } 2439 2440 if (!nai.networkMisc.explicitlySelected) { 2441 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2442 } 2443 2444 if (accept != nai.networkMisc.acceptUnvalidated) { 2445 int oldScore = nai.getCurrentScore(); 2446 nai.networkMisc.acceptUnvalidated = accept; 2447 rematchAllNetworksAndRequests(nai, oldScore); 2448 sendUpdatedScoreToFactories(nai); 2449 } 2450 2451 if (always) { 2452 nai.asyncChannel.sendMessage( 2453 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2454 } 2455 2456 if (!accept) { 2457 // Tell the NetworkAgent to not automatically reconnect to the network. 2458 nai.asyncChannel.sendMessage(NetworkAgent.CMD_PREVENT_AUTOMATIC_RECONNECT); 2459 // Teardown the nework. 2460 teardownUnneededNetwork(nai); 2461 } 2462 2463 } 2464 2465 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2466 if (VDBG) log("scheduleUnvalidatedPrompt " + nai.network); 2467 mHandler.sendMessageDelayed( 2468 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2469 PROMPT_UNVALIDATED_DELAY_MS); 2470 } 2471 2472 private void handlePromptUnvalidated(Network network) { 2473 if (VDBG) log("handlePromptUnvalidated " + network); 2474 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2475 2476 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2477 // we haven't already been told to switch to it regardless of whether it validated or not. 2478 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2479 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2480 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2481 return; 2482 } 2483 2484 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2485 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2486 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2487 intent.setClassName("com.android.settings", 2488 "com.android.settings.wifi.WifiNoInternetDialog"); 2489 2490 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2491 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2492 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2493 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent, true); 2494 } 2495 2496 private class InternalHandler extends Handler { 2497 public InternalHandler(Looper looper) { 2498 super(looper); 2499 } 2500 2501 @Override 2502 public void handleMessage(Message msg) { 2503 switch (msg.what) { 2504 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2505 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2506 String causedBy = null; 2507 synchronized (ConnectivityService.this) { 2508 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2509 mNetTransitionWakeLock.isHeld()) { 2510 mNetTransitionWakeLock.release(); 2511 causedBy = mNetTransitionWakeLockCausedBy; 2512 } else { 2513 break; 2514 } 2515 } 2516 if (VDBG) { 2517 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2518 log("Failed to find a new network - expiring NetTransition Wakelock"); 2519 } else { 2520 log("NetTransition Wakelock (" + 2521 (causedBy == null ? "unknown" : causedBy) + 2522 " cleared because we found a replacement network"); 2523 } 2524 } 2525 break; 2526 } 2527 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2528 handleDeprecatedGlobalHttpProxy(); 2529 break; 2530 } 2531 case EVENT_PROXY_HAS_CHANGED: { 2532 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2533 break; 2534 } 2535 case EVENT_REGISTER_NETWORK_FACTORY: { 2536 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2537 break; 2538 } 2539 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2540 handleUnregisterNetworkFactory((Messenger)msg.obj); 2541 break; 2542 } 2543 case EVENT_REGISTER_NETWORK_AGENT: { 2544 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2545 break; 2546 } 2547 case EVENT_REGISTER_NETWORK_REQUEST: 2548 case EVENT_REGISTER_NETWORK_LISTENER: { 2549 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2550 break; 2551 } 2552 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2553 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2554 handleRegisterNetworkRequestWithIntent(msg); 2555 break; 2556 } 2557 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2558 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2559 break; 2560 } 2561 case EVENT_RELEASE_NETWORK_REQUEST: { 2562 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2563 break; 2564 } 2565 case EVENT_SET_ACCEPT_UNVALIDATED: { 2566 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2567 break; 2568 } 2569 case EVENT_PROMPT_UNVALIDATED: { 2570 handlePromptUnvalidated((Network) msg.obj); 2571 break; 2572 } 2573 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2574 handleMobileDataAlwaysOn(); 2575 break; 2576 } 2577 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2578 case NetworkAgent.CMD_START_PACKET_KEEPALIVE: { 2579 mKeepaliveTracker.handleStartKeepalive(msg); 2580 break; 2581 } 2582 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2583 case NetworkAgent.CMD_STOP_PACKET_KEEPALIVE: { 2584 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork((Network) msg.obj); 2585 int slot = msg.arg1; 2586 int reason = msg.arg2; 2587 mKeepaliveTracker.handleStopKeepalive(nai, slot, reason); 2588 break; 2589 } 2590 case EVENT_SYSTEM_READY: { 2591 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2592 nai.networkMonitor.systemReady = true; 2593 } 2594 break; 2595 } 2596 } 2597 } 2598 } 2599 2600 // javadoc from interface 2601 public int tether(String iface) { 2602 ConnectivityManager.enforceTetherChangePermission(mContext); 2603 if (isTetheringSupported()) { 2604 return mTethering.tether(iface); 2605 } else { 2606 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2607 } 2608 } 2609 2610 // javadoc from interface 2611 public int untether(String iface) { 2612 ConnectivityManager.enforceTetherChangePermission(mContext); 2613 2614 if (isTetheringSupported()) { 2615 return mTethering.untether(iface); 2616 } else { 2617 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2618 } 2619 } 2620 2621 // javadoc from interface 2622 public int getLastTetherError(String iface) { 2623 enforceTetherAccessPermission(); 2624 2625 if (isTetheringSupported()) { 2626 return mTethering.getLastTetherError(iface); 2627 } else { 2628 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2629 } 2630 } 2631 2632 // TODO - proper iface API for selection by property, inspection, etc 2633 public String[] getTetherableUsbRegexs() { 2634 enforceTetherAccessPermission(); 2635 if (isTetheringSupported()) { 2636 return mTethering.getTetherableUsbRegexs(); 2637 } else { 2638 return new String[0]; 2639 } 2640 } 2641 2642 public String[] getTetherableWifiRegexs() { 2643 enforceTetherAccessPermission(); 2644 if (isTetheringSupported()) { 2645 return mTethering.getTetherableWifiRegexs(); 2646 } else { 2647 return new String[0]; 2648 } 2649 } 2650 2651 public String[] getTetherableBluetoothRegexs() { 2652 enforceTetherAccessPermission(); 2653 if (isTetheringSupported()) { 2654 return mTethering.getTetherableBluetoothRegexs(); 2655 } else { 2656 return new String[0]; 2657 } 2658 } 2659 2660 public int setUsbTethering(boolean enable) { 2661 ConnectivityManager.enforceTetherChangePermission(mContext); 2662 if (isTetheringSupported()) { 2663 return mTethering.setUsbTethering(enable); 2664 } else { 2665 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2666 } 2667 } 2668 2669 // TODO - move iface listing, queries, etc to new module 2670 // javadoc from interface 2671 public String[] getTetherableIfaces() { 2672 enforceTetherAccessPermission(); 2673 return mTethering.getTetherableIfaces(); 2674 } 2675 2676 public String[] getTetheredIfaces() { 2677 enforceTetherAccessPermission(); 2678 return mTethering.getTetheredIfaces(); 2679 } 2680 2681 public String[] getTetheringErroredIfaces() { 2682 enforceTetherAccessPermission(); 2683 return mTethering.getErroredIfaces(); 2684 } 2685 2686 public String[] getTetheredDhcpRanges() { 2687 enforceConnectivityInternalPermission(); 2688 return mTethering.getTetheredDhcpRanges(); 2689 } 2690 2691 // if ro.tether.denied = true we default to no tethering 2692 // gservices could set the secure setting to 1 though to enable it on a build where it 2693 // had previously been turned off. 2694 @Override 2695 public boolean isTetheringSupported() { 2696 enforceTetherAccessPermission(); 2697 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2698 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2699 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2700 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2701 return tetherEnabledInSettings && mUserManager.isAdminUser() && 2702 ((mTethering.getTetherableUsbRegexs().length != 0 || 2703 mTethering.getTetherableWifiRegexs().length != 0 || 2704 mTethering.getTetherableBluetoothRegexs().length != 0) && 2705 mTethering.getUpstreamIfaceTypes().length != 0); 2706 } 2707 2708 @Override 2709 public void startTethering(int type, ResultReceiver receiver, 2710 boolean showProvisioningUi) { 2711 ConnectivityManager.enforceTetherChangePermission(mContext); 2712 if (!isTetheringSupported()) { 2713 receiver.send(ConnectivityManager.TETHER_ERROR_UNSUPPORTED, null); 2714 return; 2715 } 2716 mTethering.startTethering(type, receiver, showProvisioningUi); 2717 } 2718 2719 @Override 2720 public void stopTethering(int type) { 2721 ConnectivityManager.enforceTetherChangePermission(mContext); 2722 mTethering.stopTethering(type); 2723 } 2724 2725 // Called when we lose the default network and have no replacement yet. 2726 // This will automatically be cleared after X seconds or a new default network 2727 // becomes CONNECTED, whichever happens first. The timer is started by the 2728 // first caller and not restarted by subsequent callers. 2729 private void requestNetworkTransitionWakelock(String forWhom) { 2730 int serialNum = 0; 2731 synchronized (this) { 2732 if (mNetTransitionWakeLock.isHeld()) return; 2733 serialNum = ++mNetTransitionWakeLockSerialNumber; 2734 mNetTransitionWakeLock.acquire(); 2735 mNetTransitionWakeLockCausedBy = forWhom; 2736 } 2737 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2738 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2739 mNetTransitionWakeLockTimeout); 2740 return; 2741 } 2742 2743 // 100 percent is full good, 0 is full bad. 2744 public void reportInetCondition(int networkType, int percentage) { 2745 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2746 if (nai == null) return; 2747 reportNetworkConnectivity(nai.network, percentage > 50); 2748 } 2749 2750 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2751 enforceAccessPermission(); 2752 enforceInternetPermission(); 2753 2754 NetworkAgentInfo nai; 2755 if (network == null) { 2756 nai = getDefaultNetwork(); 2757 } else { 2758 nai = getNetworkAgentInfoForNetwork(network); 2759 } 2760 if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || 2761 nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { 2762 return; 2763 } 2764 // Revalidate if the app report does not match our current validated state. 2765 if (hasConnectivity == nai.lastValidated) return; 2766 final int uid = Binder.getCallingUid(); 2767 if (DBG) { 2768 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2769 ") by " + uid); 2770 } 2771 synchronized (nai) { 2772 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2773 // which isn't meant to work on uncreated networks. 2774 if (!nai.created) return; 2775 2776 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2777 2778 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2779 } 2780 } 2781 2782 private ProxyInfo getDefaultProxy() { 2783 // this information is already available as a world read/writable jvm property 2784 // so this API change wouldn't have a benifit. It also breaks the passing 2785 // of proxy info to all the JVMs. 2786 // enforceAccessPermission(); 2787 synchronized (mProxyLock) { 2788 ProxyInfo ret = mGlobalProxy; 2789 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2790 return ret; 2791 } 2792 } 2793 2794 public ProxyInfo getProxyForNetwork(Network network) { 2795 if (network == null) return getDefaultProxy(); 2796 final ProxyInfo globalProxy = getGlobalProxy(); 2797 if (globalProxy != null) return globalProxy; 2798 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2799 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2800 // caller may not have. 2801 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2802 if (nai == null) return null; 2803 synchronized (nai) { 2804 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2805 if (proxyInfo == null) return null; 2806 return new ProxyInfo(proxyInfo); 2807 } 2808 } 2809 2810 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2811 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2812 // proxy is null then there is no proxy in place). 2813 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2814 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2815 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2816 proxy = null; 2817 } 2818 return proxy; 2819 } 2820 2821 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2822 // better for determining if a new proxy broadcast is necessary: 2823 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2824 // avoid unnecessary broadcasts. 2825 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2826 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2827 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2828 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2829 // all set. 2830 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2831 a = canonicalizeProxyInfo(a); 2832 b = canonicalizeProxyInfo(b); 2833 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2834 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2835 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2836 } 2837 2838 public void setGlobalProxy(ProxyInfo proxyProperties) { 2839 enforceConnectivityInternalPermission(); 2840 2841 synchronized (mProxyLock) { 2842 if (proxyProperties == mGlobalProxy) return; 2843 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2844 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2845 2846 String host = ""; 2847 int port = 0; 2848 String exclList = ""; 2849 String pacFileUrl = ""; 2850 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2851 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2852 if (!proxyProperties.isValid()) { 2853 if (DBG) 2854 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2855 return; 2856 } 2857 mGlobalProxy = new ProxyInfo(proxyProperties); 2858 host = mGlobalProxy.getHost(); 2859 port = mGlobalProxy.getPort(); 2860 exclList = mGlobalProxy.getExclusionListAsString(); 2861 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2862 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2863 } 2864 } else { 2865 mGlobalProxy = null; 2866 } 2867 ContentResolver res = mContext.getContentResolver(); 2868 final long token = Binder.clearCallingIdentity(); 2869 try { 2870 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2871 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2872 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2873 exclList); 2874 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2875 } finally { 2876 Binder.restoreCallingIdentity(token); 2877 } 2878 2879 if (mGlobalProxy == null) { 2880 proxyProperties = mDefaultProxy; 2881 } 2882 sendProxyBroadcast(proxyProperties); 2883 } 2884 } 2885 2886 private void loadGlobalProxy() { 2887 ContentResolver res = mContext.getContentResolver(); 2888 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2889 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2890 String exclList = Settings.Global.getString(res, 2891 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2892 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2893 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2894 ProxyInfo proxyProperties; 2895 if (!TextUtils.isEmpty(pacFileUrl)) { 2896 proxyProperties = new ProxyInfo(pacFileUrl); 2897 } else { 2898 proxyProperties = new ProxyInfo(host, port, exclList); 2899 } 2900 if (!proxyProperties.isValid()) { 2901 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2902 return; 2903 } 2904 2905 synchronized (mProxyLock) { 2906 mGlobalProxy = proxyProperties; 2907 } 2908 } 2909 } 2910 2911 public ProxyInfo getGlobalProxy() { 2912 // this information is already available as a world read/writable jvm property 2913 // so this API change wouldn't have a benifit. It also breaks the passing 2914 // of proxy info to all the JVMs. 2915 // enforceAccessPermission(); 2916 synchronized (mProxyLock) { 2917 return mGlobalProxy; 2918 } 2919 } 2920 2921 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2922 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2923 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2924 proxy = null; 2925 } 2926 synchronized (mProxyLock) { 2927 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2928 if (mDefaultProxy == proxy) return; // catches repeated nulls 2929 if (proxy != null && !proxy.isValid()) { 2930 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2931 return; 2932 } 2933 2934 // This call could be coming from the PacManager, containing the port of the local 2935 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2936 // global (to get the correct local port), and send a broadcast. 2937 // TODO: Switch PacManager to have its own message to send back rather than 2938 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2939 if ((mGlobalProxy != null) && (proxy != null) 2940 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2941 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2942 mGlobalProxy = proxy; 2943 sendProxyBroadcast(mGlobalProxy); 2944 return; 2945 } 2946 mDefaultProxy = proxy; 2947 2948 if (mGlobalProxy != null) return; 2949 if (!mDefaultProxyDisabled) { 2950 sendProxyBroadcast(proxy); 2951 } 2952 } 2953 } 2954 2955 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2956 // This method gets called when any network changes proxy, but the broadcast only ever contains 2957 // the default proxy (even if it hasn't changed). 2958 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2959 // world where an app might be bound to a non-default network. 2960 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2961 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2962 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2963 2964 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2965 sendProxyBroadcast(getDefaultProxy()); 2966 } 2967 } 2968 2969 private void handleDeprecatedGlobalHttpProxy() { 2970 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2971 Settings.Global.HTTP_PROXY); 2972 if (!TextUtils.isEmpty(proxy)) { 2973 String data[] = proxy.split(":"); 2974 if (data.length == 0) { 2975 return; 2976 } 2977 2978 String proxyHost = data[0]; 2979 int proxyPort = 8080; 2980 if (data.length > 1) { 2981 try { 2982 proxyPort = Integer.parseInt(data[1]); 2983 } catch (NumberFormatException e) { 2984 return; 2985 } 2986 } 2987 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2988 setGlobalProxy(p); 2989 } 2990 } 2991 2992 private void sendProxyBroadcast(ProxyInfo proxy) { 2993 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2994 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2995 if (DBG) log("sending Proxy Broadcast for " + proxy); 2996 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2997 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2998 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2999 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3000 final long ident = Binder.clearCallingIdentity(); 3001 try { 3002 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3003 } finally { 3004 Binder.restoreCallingIdentity(ident); 3005 } 3006 } 3007 3008 private static class SettingsObserver extends ContentObserver { 3009 final private HashMap<Uri, Integer> mUriEventMap; 3010 final private Context mContext; 3011 final private Handler mHandler; 3012 3013 SettingsObserver(Context context, Handler handler) { 3014 super(null); 3015 mUriEventMap = new HashMap<Uri, Integer>(); 3016 mContext = context; 3017 mHandler = handler; 3018 } 3019 3020 void observe(Uri uri, int what) { 3021 mUriEventMap.put(uri, what); 3022 final ContentResolver resolver = mContext.getContentResolver(); 3023 resolver.registerContentObserver(uri, false, this); 3024 } 3025 3026 @Override 3027 public void onChange(boolean selfChange) { 3028 Slog.wtf(TAG, "Should never be reached."); 3029 } 3030 3031 @Override 3032 public void onChange(boolean selfChange, Uri uri) { 3033 final Integer what = mUriEventMap.get(uri); 3034 if (what != null) { 3035 mHandler.obtainMessage(what.intValue()).sendToTarget(); 3036 } else { 3037 loge("No matching event to send for URI=" + uri); 3038 } 3039 } 3040 } 3041 3042 private static void log(String s) { 3043 Slog.d(TAG, s); 3044 } 3045 3046 private static void loge(String s) { 3047 Slog.e(TAG, s); 3048 } 3049 3050 private static <T> T checkNotNull(T value, String message) { 3051 if (value == null) { 3052 throw new NullPointerException(message); 3053 } 3054 return value; 3055 } 3056 3057 /** 3058 * Prepare for a VPN application. 3059 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3060 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3061 * 3062 * @param oldPackage Package name of the application which currently controls VPN, which will 3063 * be replaced. If there is no such application, this should should either be 3064 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3065 * @param newPackage Package name of the application which should gain control of VPN, or 3066 * {@code null} to disable. 3067 * @param userId User for whom to prepare the new VPN. 3068 * 3069 * @hide 3070 */ 3071 @Override 3072 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3073 int userId) { 3074 enforceCrossUserPermission(userId); 3075 throwIfLockdownEnabled(); 3076 3077 synchronized(mVpns) { 3078 Vpn vpn = mVpns.get(userId); 3079 if (vpn != null) { 3080 return vpn.prepare(oldPackage, newPackage); 3081 } else { 3082 return false; 3083 } 3084 } 3085 } 3086 3087 /** 3088 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3089 * This method is used by system-privileged apps. 3090 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3091 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3092 * 3093 * @param packageName The package for which authorization state should change. 3094 * @param userId User for whom {@code packageName} is installed. 3095 * @param authorized {@code true} if this app should be able to start a VPN connection without 3096 * explicit user approval, {@code false} if not. 3097 * 3098 * @hide 3099 */ 3100 @Override 3101 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3102 enforceCrossUserPermission(userId); 3103 3104 synchronized(mVpns) { 3105 Vpn vpn = mVpns.get(userId); 3106 if (vpn != null) { 3107 vpn.setPackageAuthorization(packageName, authorized); 3108 } 3109 } 3110 } 3111 3112 /** 3113 * Configure a TUN interface and return its file descriptor. Parameters 3114 * are encoded and opaque to this class. This method is used by VpnBuilder 3115 * and not available in ConnectivityManager. Permissions are checked in 3116 * Vpn class. 3117 * @hide 3118 */ 3119 @Override 3120 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3121 throwIfLockdownEnabled(); 3122 int user = UserHandle.getUserId(Binder.getCallingUid()); 3123 synchronized(mVpns) { 3124 return mVpns.get(user).establish(config); 3125 } 3126 } 3127 3128 /** 3129 * Start legacy VPN, controlling native daemons as needed. Creates a 3130 * secondary thread to perform connection work, returning quickly. 3131 */ 3132 @Override 3133 public void startLegacyVpn(VpnProfile profile) { 3134 throwIfLockdownEnabled(); 3135 final LinkProperties egress = getActiveLinkProperties(); 3136 if (egress == null) { 3137 throw new IllegalStateException("Missing active network connection"); 3138 } 3139 int user = UserHandle.getUserId(Binder.getCallingUid()); 3140 synchronized(mVpns) { 3141 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3142 } 3143 } 3144 3145 /** 3146 * Return the information of the ongoing legacy VPN. This method is used 3147 * by VpnSettings and not available in ConnectivityManager. Permissions 3148 * are checked in Vpn class. 3149 */ 3150 @Override 3151 public LegacyVpnInfo getLegacyVpnInfo(int userId) { 3152 enforceCrossUserPermission(userId); 3153 if (mLockdownEnabled) { 3154 return null; 3155 } 3156 3157 synchronized(mVpns) { 3158 return mVpns.get(userId).getLegacyVpnInfo(); 3159 } 3160 } 3161 3162 /** 3163 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3164 * and not available in ConnectivityManager. 3165 */ 3166 @Override 3167 public VpnInfo[] getAllVpnInfo() { 3168 enforceConnectivityInternalPermission(); 3169 if (mLockdownEnabled) { 3170 return new VpnInfo[0]; 3171 } 3172 3173 synchronized(mVpns) { 3174 List<VpnInfo> infoList = new ArrayList<>(); 3175 for (int i = 0; i < mVpns.size(); i++) { 3176 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3177 if (info != null) { 3178 infoList.add(info); 3179 } 3180 } 3181 return infoList.toArray(new VpnInfo[infoList.size()]); 3182 } 3183 } 3184 3185 /** 3186 * @return VPN information for accounting, or null if we can't retrieve all required 3187 * information, e.g primary underlying iface. 3188 */ 3189 @Nullable 3190 private VpnInfo createVpnInfo(Vpn vpn) { 3191 VpnInfo info = vpn.getVpnInfo(); 3192 if (info == null) { 3193 return null; 3194 } 3195 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3196 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3197 // the underlyingNetworks list. 3198 if (underlyingNetworks == null) { 3199 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3200 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3201 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3202 } 3203 } else if (underlyingNetworks.length > 0) { 3204 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3205 if (linkProperties != null) { 3206 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3207 } 3208 } 3209 return info.primaryUnderlyingIface == null ? null : info; 3210 } 3211 3212 /** 3213 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3214 * VpnDialogs and not available in ConnectivityManager. 3215 * Permissions are checked in Vpn class. 3216 * @hide 3217 */ 3218 @Override 3219 public VpnConfig getVpnConfig(int userId) { 3220 enforceCrossUserPermission(userId); 3221 synchronized(mVpns) { 3222 Vpn vpn = mVpns.get(userId); 3223 if (vpn != null) { 3224 return vpn.getVpnConfig(); 3225 } else { 3226 return null; 3227 } 3228 } 3229 } 3230 3231 @Override 3232 public boolean updateLockdownVpn() { 3233 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3234 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3235 return false; 3236 } 3237 3238 // Tear down existing lockdown if profile was removed 3239 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3240 if (mLockdownEnabled) { 3241 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3242 final VpnProfile profile = VpnProfile.decode( 3243 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3244 if (profile == null) { 3245 Slog.e(TAG, "Lockdown VPN configured invalid profile " + profileName); 3246 setLockdownTracker(null); 3247 return true; 3248 } 3249 int user = UserHandle.getUserId(Binder.getCallingUid()); 3250 synchronized(mVpns) { 3251 Vpn vpn = mVpns.get(user); 3252 if (vpn == null) { 3253 Slog.w(TAG, "VPN for user " + user + " not ready yet. Skipping lockdown"); 3254 return false; 3255 } 3256 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, vpn, profile)); 3257 } 3258 } else { 3259 setLockdownTracker(null); 3260 } 3261 3262 return true; 3263 } 3264 3265 /** 3266 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3267 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3268 */ 3269 private void setLockdownTracker(LockdownVpnTracker tracker) { 3270 // Shutdown any existing tracker 3271 final LockdownVpnTracker existing = mLockdownTracker; 3272 mLockdownTracker = null; 3273 if (existing != null) { 3274 existing.shutdown(); 3275 } 3276 3277 try { 3278 if (tracker != null) { 3279 mNetd.setFirewallEnabled(true); 3280 mNetd.setFirewallInterfaceRule("lo", true); 3281 mLockdownTracker = tracker; 3282 mLockdownTracker.init(); 3283 } else { 3284 mNetd.setFirewallEnabled(false); 3285 } 3286 } catch (RemoteException e) { 3287 // ignored; NMS lives inside system_server 3288 } 3289 } 3290 3291 private void throwIfLockdownEnabled() { 3292 if (mLockdownEnabled) { 3293 throw new IllegalStateException("Unavailable in lockdown mode"); 3294 } 3295 } 3296 3297 /** 3298 * Sets up or tears down the always-on VPN for user {@param user} as appropriate. 3299 * 3300 * @return {@code false} in case of errors; {@code true} otherwise. 3301 */ 3302 private boolean updateAlwaysOnVpn(int user) { 3303 final String lockdownPackage = getAlwaysOnVpnPackage(user); 3304 if (lockdownPackage == null) { 3305 return true; 3306 } 3307 3308 // Create an intent to start the VPN service declared in the app's manifest. 3309 Intent serviceIntent = new Intent(VpnConfig.SERVICE_INTERFACE); 3310 serviceIntent.setPackage(lockdownPackage); 3311 3312 try { 3313 return mContext.startServiceAsUser(serviceIntent, UserHandle.of(user)) != null; 3314 } catch (RuntimeException e) { 3315 return false; 3316 } 3317 } 3318 3319 @Override 3320 public boolean setAlwaysOnVpnPackage(int userId, String packageName) { 3321 enforceConnectivityInternalPermission(); 3322 enforceCrossUserPermission(userId); 3323 3324 // Can't set always-on VPN if legacy VPN is already in lockdown mode. 3325 if (LockdownVpnTracker.isEnabled()) { 3326 return false; 3327 } 3328 3329 // If the current VPN package is the same as the new one, this is a no-op 3330 final String oldPackage = getAlwaysOnVpnPackage(userId); 3331 if (TextUtils.equals(oldPackage, packageName)) { 3332 return true; 3333 } 3334 3335 synchronized (mVpns) { 3336 Vpn vpn = mVpns.get(userId); 3337 if (vpn == null) { 3338 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3339 return false; 3340 } 3341 if (!vpn.setAlwaysOnPackage(packageName)) { 3342 return false; 3343 } 3344 if (!updateAlwaysOnVpn(userId)) { 3345 vpn.setAlwaysOnPackage(null); 3346 return false; 3347 } 3348 } 3349 return true; 3350 } 3351 3352 @Override 3353 public String getAlwaysOnVpnPackage(int userId) { 3354 enforceConnectivityInternalPermission(); 3355 enforceCrossUserPermission(userId); 3356 3357 synchronized (mVpns) { 3358 Vpn vpn = mVpns.get(userId); 3359 if (vpn == null) { 3360 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3361 return null; 3362 } 3363 return vpn.getAlwaysOnPackage(); 3364 } 3365 } 3366 3367 @Override 3368 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3369 // TODO: Remove? Any reason to trigger a provisioning check? 3370 return -1; 3371 } 3372 3373 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3374 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3375 3376 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3377 Intent intent = new Intent(action); 3378 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3379 // Concatenate the range of types onto the range of NetIDs. 3380 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3381 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3382 networkType, null, pendingIntent, false); 3383 } 3384 3385 /** 3386 * Show or hide network provisioning notifications. 3387 * 3388 * We use notifications for two purposes: to notify that a network requires sign in 3389 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3390 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3391 * particular network we can display the notification type that was most recently requested. 3392 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3393 * might first display NO_INTERNET, and then when the captive portal check completes, display 3394 * SIGN_IN. 3395 * 3396 * @param id an identifier that uniquely identifies this notification. This must match 3397 * between show and hide calls. We use the NetID value but for legacy callers 3398 * we concatenate the range of types with the range of NetIDs. 3399 */ 3400 private void setProvNotificationVisibleIntent(boolean visible, int id, 3401 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent, 3402 boolean highPriority) { 3403 if (VDBG || (DBG && visible)) { 3404 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3405 + " networkType=" + getNetworkTypeName(networkType) 3406 + " extraInfo=" + extraInfo + " highPriority=" + highPriority); 3407 } 3408 3409 Resources r = Resources.getSystem(); 3410 NotificationManager notificationManager = (NotificationManager) mContext 3411 .getSystemService(Context.NOTIFICATION_SERVICE); 3412 3413 if (visible) { 3414 CharSequence title; 3415 CharSequence details; 3416 int icon; 3417 if (notifyType == NotificationType.NO_INTERNET && 3418 networkType == ConnectivityManager.TYPE_WIFI) { 3419 title = r.getString(R.string.wifi_no_internet, 0); 3420 details = r.getString(R.string.wifi_no_internet_detailed); 3421 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3422 } else if (notifyType == NotificationType.SIGN_IN) { 3423 switch (networkType) { 3424 case ConnectivityManager.TYPE_WIFI: 3425 title = r.getString(R.string.wifi_available_sign_in, 0); 3426 details = r.getString(R.string.network_available_sign_in_detailed, 3427 extraInfo); 3428 icon = R.drawable.stat_notify_wifi_in_range; 3429 break; 3430 case ConnectivityManager.TYPE_MOBILE: 3431 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3432 title = r.getString(R.string.network_available_sign_in, 0); 3433 // TODO: Change this to pull from NetworkInfo once a printable 3434 // name has been added to it 3435 details = mTelephonyManager.getNetworkOperatorName(); 3436 icon = R.drawable.stat_notify_rssi_in_range; 3437 break; 3438 default: 3439 title = r.getString(R.string.network_available_sign_in, 0); 3440 details = r.getString(R.string.network_available_sign_in_detailed, 3441 extraInfo); 3442 icon = R.drawable.stat_notify_rssi_in_range; 3443 break; 3444 } 3445 } else { 3446 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3447 + getNetworkTypeName(networkType)); 3448 return; 3449 } 3450 3451 Notification notification = new Notification.Builder(mContext) 3452 .setWhen(0) 3453 .setSmallIcon(icon) 3454 .setAutoCancel(true) 3455 .setTicker(title) 3456 .setColor(mContext.getColor( 3457 com.android.internal.R.color.system_notification_accent_color)) 3458 .setContentTitle(title) 3459 .setContentText(details) 3460 .setContentIntent(intent) 3461 .setLocalOnly(true) 3462 .setPriority(highPriority ? 3463 Notification.PRIORITY_HIGH : 3464 Notification.PRIORITY_DEFAULT) 3465 .setDefaults(highPriority ? Notification.DEFAULT_ALL : 0) 3466 .setOnlyAlertOnce(true) 3467 .build(); 3468 3469 try { 3470 notificationManager.notify(NOTIFICATION_ID, id, notification); 3471 } catch (NullPointerException npe) { 3472 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3473 npe.printStackTrace(); 3474 } 3475 } else { 3476 try { 3477 notificationManager.cancel(NOTIFICATION_ID, id); 3478 } catch (NullPointerException npe) { 3479 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3480 npe.printStackTrace(); 3481 } 3482 } 3483 } 3484 3485 /** Location to an updatable file listing carrier provisioning urls. 3486 * An example: 3487 * 3488 * <?xml version="1.0" encoding="utf-8"?> 3489 * <provisioningUrls> 3490 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3491 * </provisioningUrls> 3492 */ 3493 private static final String PROVISIONING_URL_PATH = 3494 "/data/misc/radio/provisioning_urls.xml"; 3495 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3496 3497 /** XML tag for root element. */ 3498 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3499 /** XML tag for individual url */ 3500 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3501 /** XML attribute for mcc */ 3502 private static final String ATTR_MCC = "mcc"; 3503 /** XML attribute for mnc */ 3504 private static final String ATTR_MNC = "mnc"; 3505 3506 private String getProvisioningUrlBaseFromFile() { 3507 FileReader fileReader = null; 3508 XmlPullParser parser = null; 3509 Configuration config = mContext.getResources().getConfiguration(); 3510 3511 try { 3512 fileReader = new FileReader(mProvisioningUrlFile); 3513 parser = Xml.newPullParser(); 3514 parser.setInput(fileReader); 3515 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3516 3517 while (true) { 3518 XmlUtils.nextElement(parser); 3519 3520 String element = parser.getName(); 3521 if (element == null) break; 3522 3523 if (element.equals(TAG_PROVISIONING_URL)) { 3524 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3525 try { 3526 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3527 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3528 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3529 parser.next(); 3530 if (parser.getEventType() == XmlPullParser.TEXT) { 3531 return parser.getText(); 3532 } 3533 } 3534 } 3535 } catch (NumberFormatException e) { 3536 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3537 } 3538 } 3539 } 3540 return null; 3541 } catch (FileNotFoundException e) { 3542 loge("Carrier Provisioning Urls file not found"); 3543 } catch (XmlPullParserException e) { 3544 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3545 } catch (IOException e) { 3546 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3547 } finally { 3548 if (fileReader != null) { 3549 try { 3550 fileReader.close(); 3551 } catch (IOException e) {} 3552 } 3553 } 3554 return null; 3555 } 3556 3557 @Override 3558 public String getMobileProvisioningUrl() { 3559 enforceConnectivityInternalPermission(); 3560 String url = getProvisioningUrlBaseFromFile(); 3561 if (TextUtils.isEmpty(url)) { 3562 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3563 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3564 } else { 3565 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3566 } 3567 // populate the iccid, imei and phone number in the provisioning url. 3568 if (!TextUtils.isEmpty(url)) { 3569 String phoneNumber = mTelephonyManager.getLine1Number(); 3570 if (TextUtils.isEmpty(phoneNumber)) { 3571 phoneNumber = "0000000000"; 3572 } 3573 url = String.format(url, 3574 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3575 mTelephonyManager.getDeviceId() /* IMEI */, 3576 phoneNumber /* Phone numer */); 3577 } 3578 3579 return url; 3580 } 3581 3582 @Override 3583 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3584 String action) { 3585 enforceConnectivityInternalPermission(); 3586 final long ident = Binder.clearCallingIdentity(); 3587 try { 3588 setProvNotificationVisible(visible, networkType, action); 3589 } finally { 3590 Binder.restoreCallingIdentity(ident); 3591 } 3592 } 3593 3594 @Override 3595 public void setAirplaneMode(boolean enable) { 3596 enforceConnectivityInternalPermission(); 3597 final long ident = Binder.clearCallingIdentity(); 3598 try { 3599 final ContentResolver cr = mContext.getContentResolver(); 3600 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3601 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3602 intent.putExtra("state", enable); 3603 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3604 } finally { 3605 Binder.restoreCallingIdentity(ident); 3606 } 3607 } 3608 3609 private void onUserStart(int userId) { 3610 synchronized(mVpns) { 3611 Vpn userVpn = mVpns.get(userId); 3612 if (userVpn != null) { 3613 loge("Starting user already has a VPN"); 3614 return; 3615 } 3616 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3617 mVpns.put(userId, userVpn); 3618 } 3619 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3620 updateLockdownVpn(); 3621 } else { 3622 updateAlwaysOnVpn(userId); 3623 } 3624 } 3625 3626 private void onUserStop(int userId) { 3627 synchronized(mVpns) { 3628 Vpn userVpn = mVpns.get(userId); 3629 if (userVpn == null) { 3630 loge("Stopping user has no VPN"); 3631 return; 3632 } 3633 mVpns.delete(userId); 3634 } 3635 } 3636 3637 private void onUserAdded(int userId) { 3638 synchronized(mVpns) { 3639 final int vpnsSize = mVpns.size(); 3640 for (int i = 0; i < vpnsSize; i++) { 3641 Vpn vpn = mVpns.valueAt(i); 3642 vpn.onUserAdded(userId); 3643 } 3644 } 3645 } 3646 3647 private void onUserRemoved(int userId) { 3648 synchronized(mVpns) { 3649 final int vpnsSize = mVpns.size(); 3650 for (int i = 0; i < vpnsSize; i++) { 3651 Vpn vpn = mVpns.valueAt(i); 3652 vpn.onUserRemoved(userId); 3653 } 3654 } 3655 } 3656 3657 private void onUserUnlocked(int userId) { 3658 // User present may be sent because of an unlock, which might mean an unlocked keystore. 3659 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3660 updateLockdownVpn(); 3661 } else { 3662 updateAlwaysOnVpn(userId); 3663 } 3664 } 3665 3666 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3667 @Override 3668 public void onReceive(Context context, Intent intent) { 3669 final String action = intent.getAction(); 3670 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3671 if (userId == UserHandle.USER_NULL) return; 3672 3673 if (Intent.ACTION_USER_STARTING.equals(action)) { 3674 onUserStart(userId); 3675 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3676 onUserStop(userId); 3677 } else if (Intent.ACTION_USER_ADDED.equals(action)) { 3678 onUserAdded(userId); 3679 } else if (Intent.ACTION_USER_REMOVED.equals(action)) { 3680 onUserRemoved(userId); 3681 } else if (Intent.ACTION_USER_UNLOCKED.equals(action)) { 3682 onUserUnlocked(userId); 3683 } 3684 } 3685 }; 3686 3687 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3688 new HashMap<Messenger, NetworkFactoryInfo>(); 3689 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3690 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3691 3692 private static final int MAX_NETWORK_REQUESTS_PER_UID = 100; 3693 // Map from UID to number of NetworkRequests that UID has filed. 3694 @GuardedBy("mUidToNetworkRequestCount") 3695 private final SparseIntArray mUidToNetworkRequestCount = new SparseIntArray(); 3696 3697 private static class NetworkFactoryInfo { 3698 public final String name; 3699 public final Messenger messenger; 3700 public final AsyncChannel asyncChannel; 3701 3702 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3703 this.name = name; 3704 this.messenger = messenger; 3705 this.asyncChannel = asyncChannel; 3706 } 3707 } 3708 3709 /** 3710 * A NetworkRequest as registered by an application can be one of three 3711 * types: 3712 * 3713 * - "listen", for which the framework will issue callbacks about any 3714 * and all networks that match the specified NetworkCapabilities, 3715 * 3716 * - "request", capable of causing a specific network to be created 3717 * first (e.g. a telephony DUN request), the framework will issue 3718 * callbacks about the single, highest scoring current network 3719 * (if any) that matches the specified NetworkCapabilities, or 3720 * 3721 * - "track the default network", a hybrid of the two designed such 3722 * that the framework will issue callbacks for the single, highest 3723 * scoring current network (if any) that matches the capabilities of 3724 * the default Internet request (mDefaultRequest), but which cannot 3725 * cause the framework to either create or retain the existence of 3726 * any specific network. 3727 * 3728 */ 3729 private static enum NetworkRequestType { 3730 LISTEN, 3731 TRACK_DEFAULT, 3732 REQUEST 3733 }; 3734 3735 /** 3736 * Tracks info about the requester. 3737 * Also used to notice when the calling process dies so we can self-expire 3738 */ 3739 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3740 final NetworkRequest request; 3741 final PendingIntent mPendingIntent; 3742 boolean mPendingIntentSent; 3743 private final IBinder mBinder; 3744 final int mPid; 3745 final int mUid; 3746 final Messenger messenger; 3747 private final NetworkRequestType mType; 3748 3749 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, NetworkRequestType type) { 3750 request = r; 3751 mPendingIntent = pi; 3752 messenger = null; 3753 mBinder = null; 3754 mPid = getCallingPid(); 3755 mUid = getCallingUid(); 3756 mType = type; 3757 enforceRequestCountLimit(); 3758 } 3759 3760 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, NetworkRequestType type) { 3761 super(); 3762 messenger = m; 3763 request = r; 3764 mBinder = binder; 3765 mPid = getCallingPid(); 3766 mUid = getCallingUid(); 3767 mType = type; 3768 mPendingIntent = null; 3769 enforceRequestCountLimit(); 3770 3771 try { 3772 mBinder.linkToDeath(this, 0); 3773 } catch (RemoteException e) { 3774 binderDied(); 3775 } 3776 } 3777 3778 private void enforceRequestCountLimit() { 3779 synchronized (mUidToNetworkRequestCount) { 3780 int networkRequests = mUidToNetworkRequestCount.get(mUid, 0) + 1; 3781 if (networkRequests >= MAX_NETWORK_REQUESTS_PER_UID) { 3782 throw new IllegalArgumentException("Too many NetworkRequests filed"); 3783 } 3784 mUidToNetworkRequestCount.put(mUid, networkRequests); 3785 } 3786 } 3787 3788 private String typeString() { 3789 switch (mType) { 3790 case LISTEN: return "Listen"; 3791 case REQUEST: return "Request"; 3792 case TRACK_DEFAULT: return "Track default"; 3793 default: 3794 return "unknown type"; 3795 } 3796 } 3797 3798 void unlinkDeathRecipient() { 3799 if (mBinder != null) { 3800 mBinder.unlinkToDeath(this, 0); 3801 } 3802 } 3803 3804 public void binderDied() { 3805 log("ConnectivityService NetworkRequestInfo binderDied(" + 3806 request + ", " + mBinder + ")"); 3807 releaseNetworkRequest(request); 3808 } 3809 3810 /** 3811 * Returns true iff. the contained NetworkRequest is one that: 3812 * 3813 * - should be associated with at most one satisfying network 3814 * at a time; 3815 * 3816 * - should cause a network to be kept up if it is the only network 3817 * which can satisfy the NetworkReqeust. 3818 * 3819 * For full detail of how isRequest() is used for pairing Networks with 3820 * NetworkRequests read rematchNetworkAndRequests(). 3821 * 3822 * TODO: Rename to something more properly descriptive. 3823 */ 3824 public boolean isRequest() { 3825 return (mType == NetworkRequestType.TRACK_DEFAULT) || 3826 (mType == NetworkRequestType.REQUEST); 3827 } 3828 3829 public String toString() { 3830 return typeString() + 3831 " from uid/pid:" + mUid + "/" + mPid + 3832 " for " + request + 3833 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3834 } 3835 } 3836 3837 private void ensureRequestableCapabilities(NetworkCapabilities networkCapabilities) { 3838 final String badCapability = networkCapabilities.describeFirstNonRequestableCapability(); 3839 if (badCapability != null) { 3840 throw new IllegalArgumentException("Cannot request network with " + badCapability); 3841 } 3842 } 3843 3844 private ArrayList<Integer> getSignalStrengthThresholds(NetworkAgentInfo nai) { 3845 final SortedSet<Integer> thresholds = new TreeSet(); 3846 synchronized (nai) { 3847 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3848 if (nri.request.networkCapabilities.hasSignalStrength() && 3849 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 3850 thresholds.add(nri.request.networkCapabilities.getSignalStrength()); 3851 } 3852 } 3853 } 3854 return new ArrayList<Integer>(thresholds); 3855 } 3856 3857 private void updateSignalStrengthThresholds( 3858 NetworkAgentInfo nai, String reason, NetworkRequest request) { 3859 ArrayList<Integer> thresholdsArray = getSignalStrengthThresholds(nai); 3860 Bundle thresholds = new Bundle(); 3861 thresholds.putIntegerArrayList("thresholds", thresholdsArray); 3862 3863 if (VDBG || (DBG && !"CONNECT".equals(reason))) { 3864 String detail; 3865 if (request != null && request.networkCapabilities.hasSignalStrength()) { 3866 detail = reason + " " + request.networkCapabilities.getSignalStrength(); 3867 } else { 3868 detail = reason; 3869 } 3870 log(String.format("updateSignalStrengthThresholds: %s, sending %s to %s", 3871 detail, Arrays.toString(thresholdsArray.toArray()), nai.name())); 3872 } 3873 3874 nai.asyncChannel.sendMessage( 3875 android.net.NetworkAgent.CMD_SET_SIGNAL_STRENGTH_THRESHOLDS, 3876 0, 0, thresholds); 3877 } 3878 3879 @Override 3880 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3881 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3882 final NetworkRequestType type = (networkCapabilities == null) 3883 ? NetworkRequestType.TRACK_DEFAULT 3884 : NetworkRequestType.REQUEST; 3885 // If the requested networkCapabilities is null, take them instead from 3886 // the default network request. This allows callers to keep track of 3887 // the system default network. 3888 if (type == NetworkRequestType.TRACK_DEFAULT) { 3889 networkCapabilities = new NetworkCapabilities(mDefaultRequest.networkCapabilities); 3890 enforceAccessPermission(); 3891 } else { 3892 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3893 enforceNetworkRequestPermissions(networkCapabilities); 3894 } 3895 enforceMeteredApnPolicy(networkCapabilities); 3896 ensureRequestableCapabilities(networkCapabilities); 3897 3898 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3899 throw new IllegalArgumentException("Bad timeout specified"); 3900 } 3901 3902 if (NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER 3903 .equals(networkCapabilities.getNetworkSpecifier())) { 3904 throw new IllegalArgumentException("Invalid network specifier - must not be '" 3905 + NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER + "'"); 3906 } 3907 3908 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3909 nextNetworkRequestId()); 3910 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, type); 3911 if (DBG) log("requestNetwork for " + nri); 3912 3913 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3914 if (timeoutMs > 0) { 3915 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3916 nri), timeoutMs); 3917 } 3918 return networkRequest; 3919 } 3920 3921 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3922 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3923 enforceConnectivityInternalPermission(); 3924 } else { 3925 enforceChangePermission(); 3926 } 3927 } 3928 3929 @Override 3930 public boolean requestBandwidthUpdate(Network network) { 3931 enforceAccessPermission(); 3932 NetworkAgentInfo nai = null; 3933 if (network == null) { 3934 return false; 3935 } 3936 synchronized (mNetworkForNetId) { 3937 nai = mNetworkForNetId.get(network.netId); 3938 } 3939 if (nai != null) { 3940 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3941 return true; 3942 } 3943 return false; 3944 } 3945 3946 3947 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3948 // if UID is restricted, don't allow them to bring up metered APNs 3949 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3950 final int uidRules; 3951 final int uid = Binder.getCallingUid(); 3952 synchronized(mRulesLock) { 3953 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3954 } 3955 if (uidRules != RULE_ALLOW_ALL) { 3956 // we could silently fail or we can filter the available nets to only give 3957 // them those they have access to. Chose the more useful 3958 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3959 } 3960 } 3961 } 3962 3963 @Override 3964 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3965 PendingIntent operation) { 3966 checkNotNull(operation, "PendingIntent cannot be null."); 3967 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3968 enforceNetworkRequestPermissions(networkCapabilities); 3969 enforceMeteredApnPolicy(networkCapabilities); 3970 ensureRequestableCapabilities(networkCapabilities); 3971 3972 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3973 nextNetworkRequestId()); 3974 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3975 NetworkRequestType.REQUEST); 3976 if (DBG) log("pendingRequest for " + nri); 3977 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3978 nri)); 3979 return networkRequest; 3980 } 3981 3982 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3983 mHandler.sendMessageDelayed( 3984 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3985 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3986 } 3987 3988 @Override 3989 public void releasePendingNetworkRequest(PendingIntent operation) { 3990 checkNotNull(operation, "PendingIntent cannot be null."); 3991 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3992 getCallingUid(), 0, operation)); 3993 } 3994 3995 // In order to implement the compatibility measure for pre-M apps that call 3996 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3997 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3998 // This ensures it has permission to do so. 3999 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 4000 if (nc == null) { 4001 return false; 4002 } 4003 int[] transportTypes = nc.getTransportTypes(); 4004 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 4005 return false; 4006 } 4007 try { 4008 mContext.enforceCallingOrSelfPermission( 4009 android.Manifest.permission.ACCESS_WIFI_STATE, 4010 "ConnectivityService"); 4011 } catch (SecurityException e) { 4012 return false; 4013 } 4014 return true; 4015 } 4016 4017 @Override 4018 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 4019 Messenger messenger, IBinder binder) { 4020 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 4021 enforceAccessPermission(); 4022 } 4023 4024 NetworkRequest networkRequest = new NetworkRequest( 4025 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 4026 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 4027 NetworkRequestType.LISTEN); 4028 if (VDBG) log("listenForNetwork for " + nri); 4029 4030 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4031 return networkRequest; 4032 } 4033 4034 @Override 4035 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 4036 PendingIntent operation) { 4037 checkNotNull(operation, "PendingIntent cannot be null."); 4038 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 4039 enforceAccessPermission(); 4040 } 4041 4042 NetworkRequest networkRequest = new NetworkRequest( 4043 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 4044 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 4045 NetworkRequestType.LISTEN); 4046 if (VDBG) log("pendingListenForNetwork for " + nri); 4047 4048 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4049 } 4050 4051 @Override 4052 public void releaseNetworkRequest(NetworkRequest networkRequest) { 4053 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 4054 0, networkRequest)); 4055 } 4056 4057 @Override 4058 public void registerNetworkFactory(Messenger messenger, String name) { 4059 enforceConnectivityInternalPermission(); 4060 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 4061 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 4062 } 4063 4064 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 4065 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 4066 mNetworkFactoryInfos.put(nfi.messenger, nfi); 4067 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 4068 } 4069 4070 @Override 4071 public void unregisterNetworkFactory(Messenger messenger) { 4072 enforceConnectivityInternalPermission(); 4073 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 4074 } 4075 4076 private void handleUnregisterNetworkFactory(Messenger messenger) { 4077 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 4078 if (nfi == null) { 4079 loge("Failed to find Messenger in unregisterNetworkFactory"); 4080 return; 4081 } 4082 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 4083 } 4084 4085 /** 4086 * NetworkAgentInfo supporting a request by requestId. 4087 * These have already been vetted (their Capabilities satisfy the request) 4088 * and the are the highest scored network available. 4089 * the are keyed off the Requests requestId. 4090 */ 4091 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 4092 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 4093 new SparseArray<NetworkAgentInfo>(); 4094 4095 // NOTE: Accessed on multiple threads, must be synchronized on itself. 4096 @GuardedBy("mNetworkForNetId") 4097 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 4098 new SparseArray<NetworkAgentInfo>(); 4099 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 4100 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 4101 // there may not be a strict 1:1 correlation between the two. 4102 @GuardedBy("mNetworkForNetId") 4103 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 4104 4105 // NetworkAgentInfo keyed off its connecting messenger 4106 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 4107 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 4108 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 4109 new HashMap<Messenger, NetworkAgentInfo>(); 4110 4111 @GuardedBy("mBlockedAppUids") 4112 private final HashSet<Integer> mBlockedAppUids = new HashSet(); 4113 4114 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 4115 private final NetworkRequest mDefaultRequest; 4116 4117 // Request used to optionally keep mobile data active even when higher 4118 // priority networks like Wi-Fi are active. 4119 private final NetworkRequest mDefaultMobileDataRequest; 4120 4121 private NetworkAgentInfo getDefaultNetwork() { 4122 return mNetworkForRequestId.get(mDefaultRequest.requestId); 4123 } 4124 4125 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 4126 return nai == getDefaultNetwork(); 4127 } 4128 4129 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 4130 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 4131 int currentScore, NetworkMisc networkMisc) { 4132 enforceConnectivityInternalPermission(); 4133 4134 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 4135 // satisfies mDefaultRequest. 4136 final NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 4137 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 4138 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 4139 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest, this); 4140 synchronized (this) { 4141 nai.networkMonitor.systemReady = mSystemReady; 4142 } 4143 addValidationLogs(nai.networkMonitor.getValidationLogs(), nai.network); 4144 if (DBG) log("registerNetworkAgent " + nai); 4145 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 4146 return nai.network.netId; 4147 } 4148 4149 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 4150 if (VDBG) log("Got NetworkAgent Messenger"); 4151 mNetworkAgentInfos.put(na.messenger, na); 4152 synchronized (mNetworkForNetId) { 4153 mNetworkForNetId.put(na.network.netId, na); 4154 } 4155 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 4156 NetworkInfo networkInfo = na.networkInfo; 4157 na.networkInfo = null; 4158 updateNetworkInfo(na, networkInfo); 4159 } 4160 4161 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 4162 LinkProperties newLp = networkAgent.linkProperties; 4163 int netId = networkAgent.network.netId; 4164 4165 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 4166 // we do anything else, make sure its LinkProperties are accurate. 4167 if (networkAgent.clatd != null) { 4168 networkAgent.clatd.fixupLinkProperties(oldLp); 4169 } 4170 4171 updateInterfaces(newLp, oldLp, netId); 4172 updateMtu(newLp, oldLp); 4173 // TODO - figure out what to do for clat 4174// for (LinkProperties lp : newLp.getStackedLinks()) { 4175// updateMtu(lp, null); 4176// } 4177 updateTcpBufferSizes(networkAgent); 4178 4179 updateRoutes(newLp, oldLp, netId); 4180 updateDnses(newLp, oldLp, netId); 4181 4182 updateClat(newLp, oldLp, networkAgent); 4183 if (isDefaultNetwork(networkAgent)) { 4184 handleApplyDefaultProxy(newLp.getHttpProxy()); 4185 } else { 4186 updateProxy(newLp, oldLp, networkAgent); 4187 } 4188 // TODO - move this check to cover the whole function 4189 if (!Objects.equals(newLp, oldLp)) { 4190 notifyIfacesChangedForNetworkStats(); 4191 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 4192 } 4193 4194 mKeepaliveTracker.handleCheckKeepalivesStillValid(networkAgent); 4195 } 4196 4197 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 4198 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 4199 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 4200 4201 if (!wasRunningClat && shouldRunClat) { 4202 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 4203 nai.clatd.start(); 4204 } else if (wasRunningClat && !shouldRunClat) { 4205 nai.clatd.stop(); 4206 } 4207 } 4208 4209 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 4210 CompareResult<String> interfaceDiff = new CompareResult<String>(); 4211 if (oldLp != null) { 4212 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 4213 } else if (newLp != null) { 4214 interfaceDiff.added = newLp.getAllInterfaceNames(); 4215 } 4216 for (String iface : interfaceDiff.added) { 4217 try { 4218 if (DBG) log("Adding iface " + iface + " to network " + netId); 4219 mNetd.addInterfaceToNetwork(iface, netId); 4220 } catch (Exception e) { 4221 loge("Exception adding interface: " + e); 4222 } 4223 } 4224 for (String iface : interfaceDiff.removed) { 4225 try { 4226 if (DBG) log("Removing iface " + iface + " from network " + netId); 4227 mNetd.removeInterfaceFromNetwork(iface, netId); 4228 } catch (Exception e) { 4229 loge("Exception removing interface: " + e); 4230 } 4231 } 4232 } 4233 4234 /** 4235 * Have netd update routes from oldLp to newLp. 4236 * @return true if routes changed between oldLp and newLp 4237 */ 4238 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 4239 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 4240 if (oldLp != null) { 4241 routeDiff = oldLp.compareAllRoutes(newLp); 4242 } else if (newLp != null) { 4243 routeDiff.added = newLp.getAllRoutes(); 4244 } 4245 4246 // add routes before removing old in case it helps with continuous connectivity 4247 4248 // do this twice, adding non-nexthop routes first, then routes they are dependent on 4249 for (RouteInfo route : routeDiff.added) { 4250 if (route.hasGateway()) continue; 4251 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4252 try { 4253 mNetd.addRoute(netId, route); 4254 } catch (Exception e) { 4255 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 4256 loge("Exception in addRoute for non-gateway: " + e); 4257 } 4258 } 4259 } 4260 for (RouteInfo route : routeDiff.added) { 4261 if (route.hasGateway() == false) continue; 4262 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4263 try { 4264 mNetd.addRoute(netId, route); 4265 } catch (Exception e) { 4266 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4267 loge("Exception in addRoute for gateway: " + e); 4268 } 4269 } 4270 } 4271 4272 for (RouteInfo route : routeDiff.removed) { 4273 if (VDBG) log("Removing Route [" + route + "] from network " + netId); 4274 try { 4275 mNetd.removeRoute(netId, route); 4276 } catch (Exception e) { 4277 loge("Exception in removeRoute: " + e); 4278 } 4279 } 4280 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4281 } 4282 4283 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId) { 4284 if (oldLp != null && newLp.isIdenticalDnses(oldLp)) { 4285 return; // no updating necessary 4286 } 4287 4288 Collection<InetAddress> dnses = newLp.getDnsServers(); 4289 if (DBG) log("Setting DNS servers for network " + netId + " to " + dnses); 4290 try { 4291 mNetd.setDnsServersForNetwork( 4292 netId, NetworkUtils.makeStrings(dnses), newLp.getDomains()); 4293 } catch (Exception e) { 4294 loge("Exception in setDnsServersForNetwork: " + e); 4295 } 4296 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 4297 if (defaultNai != null && defaultNai.network.netId == netId) { 4298 setDefaultDnsSystemProperties(dnses); 4299 } 4300 flushVmDnsCache(); 4301 } 4302 4303 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4304 int last = 0; 4305 for (InetAddress dns : dnses) { 4306 ++last; 4307 String key = "net.dns" + last; 4308 String value = dns.getHostAddress(); 4309 SystemProperties.set(key, value); 4310 } 4311 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4312 String key = "net.dns" + i; 4313 SystemProperties.set(key, ""); 4314 } 4315 mNumDnsEntries = last; 4316 } 4317 4318 /** 4319 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 4320 * augmented with any stateful capabilities implied from {@code networkAgent} 4321 * (e.g., validated status and captive portal status). 4322 * 4323 * @param nai the network having its capabilities updated. 4324 * @param networkCapabilities the new network capabilities. 4325 */ 4326 private void updateCapabilities(NetworkAgentInfo nai, NetworkCapabilities networkCapabilities) { 4327 // Don't modify caller's NetworkCapabilities. 4328 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4329 if (nai.lastValidated) { 4330 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4331 } else { 4332 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4333 } 4334 if (nai.lastCaptivePortalDetected) { 4335 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4336 } else { 4337 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4338 } 4339 if (!Objects.equals(nai.networkCapabilities, networkCapabilities)) { 4340 final int oldScore = nai.getCurrentScore(); 4341 if (nai.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) != 4342 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED)) { 4343 try { 4344 mNetd.setNetworkPermission(nai.network.netId, 4345 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) ? 4346 null : NetworkManagementService.PERMISSION_SYSTEM); 4347 } catch (RemoteException e) { 4348 loge("Exception in setNetworkPermission: " + e); 4349 } 4350 } 4351 synchronized (nai) { 4352 nai.networkCapabilities = networkCapabilities; 4353 } 4354 rematchAllNetworksAndRequests(nai, oldScore); 4355 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 4356 } 4357 } 4358 4359 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4360 for (int i = 0; i < nai.networkRequests.size(); i++) { 4361 NetworkRequest nr = nai.networkRequests.valueAt(i); 4362 // Don't send listening requests to factories. b/17393458 4363 if (!isRequest(nr)) continue; 4364 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4365 } 4366 } 4367 4368 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4369 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4370 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4371 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4372 networkRequest); 4373 } 4374 } 4375 4376 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4377 int notificationType) { 4378 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4379 Intent intent = new Intent(); 4380 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4381 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4382 nri.mPendingIntentSent = true; 4383 sendIntent(nri.mPendingIntent, intent); 4384 } 4385 // else not handled 4386 } 4387 4388 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4389 mPendingIntentWakeLock.acquire(); 4390 try { 4391 if (DBG) log("Sending " + pendingIntent); 4392 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4393 } catch (PendingIntent.CanceledException e) { 4394 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4395 mPendingIntentWakeLock.release(); 4396 releasePendingNetworkRequest(pendingIntent); 4397 } 4398 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4399 } 4400 4401 @Override 4402 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4403 String resultData, Bundle resultExtras) { 4404 if (DBG) log("Finished sending " + pendingIntent); 4405 mPendingIntentWakeLock.release(); 4406 // Release with a delay so the receiving client has an opportunity to put in its 4407 // own request. 4408 releasePendingNetworkRequestWithDelay(pendingIntent); 4409 } 4410 4411 private void callCallbackForRequest(NetworkRequestInfo nri, 4412 NetworkAgentInfo networkAgent, int notificationType) { 4413 if (nri.messenger == null) return; // Default request has no msgr 4414 Bundle bundle = new Bundle(); 4415 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4416 new NetworkRequest(nri.request)); 4417 Message msg = Message.obtain(); 4418 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4419 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4420 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4421 } 4422 switch (notificationType) { 4423 case ConnectivityManager.CALLBACK_LOSING: { 4424 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4425 break; 4426 } 4427 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4428 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4429 new NetworkCapabilities(networkAgent.networkCapabilities)); 4430 break; 4431 } 4432 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4433 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4434 new LinkProperties(networkAgent.linkProperties)); 4435 break; 4436 } 4437 } 4438 msg.what = notificationType; 4439 msg.setData(bundle); 4440 try { 4441 if (VDBG) { 4442 log("sending notification " + notifyTypeToName(notificationType) + 4443 " for " + nri.request); 4444 } 4445 nri.messenger.send(msg); 4446 } catch (RemoteException e) { 4447 // may occur naturally in the race of binder death. 4448 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4449 } 4450 } 4451 4452 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4453 for (int i = 0; i < nai.networkRequests.size(); i++) { 4454 NetworkRequest nr = nai.networkRequests.valueAt(i); 4455 // Ignore listening requests. 4456 if (!isRequest(nr)) continue; 4457 loge("Dead network still had at least " + nr); 4458 break; 4459 } 4460 nai.asyncChannel.disconnect(); 4461 } 4462 4463 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4464 if (oldNetwork == null) { 4465 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4466 return; 4467 } 4468 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4469 teardownUnneededNetwork(oldNetwork); 4470 } 4471 4472 private void makeDefault(NetworkAgentInfo newNetwork, NetworkAgentInfo prevNetwork) { 4473 if (DBG) log("Switching to new default network: " + newNetwork); 4474 setupDataActivityTracking(newNetwork); 4475 try { 4476 mNetd.setDefaultNetId(newNetwork.network.netId); 4477 } catch (Exception e) { 4478 loge("Exception setting default network :" + e); 4479 } 4480 notifyLockdownVpn(newNetwork); 4481 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4482 updateTcpBufferSizes(newNetwork); 4483 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4484 logDefaultNetworkEvent(newNetwork, prevNetwork); 4485 } 4486 4487 // Handles a network appearing or improving its score. 4488 // 4489 // - Evaluates all current NetworkRequests that can be 4490 // satisfied by newNetwork, and reassigns to newNetwork 4491 // any such requests for which newNetwork is the best. 4492 // 4493 // - Lingers any validated Networks that as a result are no longer 4494 // needed. A network is needed if it is the best network for 4495 // one or more NetworkRequests, or if it is a VPN. 4496 // 4497 // - Tears down newNetwork if it just became validated 4498 // but turns out to be unneeded. 4499 // 4500 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4501 // networks that have no chance (i.e. even if validated) 4502 // of becoming the highest scoring network. 4503 // 4504 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4505 // it does not remove NetworkRequests that other Networks could better satisfy. 4506 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4507 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4508 // as it performs better by a factor of the number of Networks. 4509 // 4510 // @param newNetwork is the network to be matched against NetworkRequests. 4511 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4512 // performed to tear down unvalidated networks that have no chance (i.e. even if 4513 // validated) of becoming the highest scoring network. 4514 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, 4515 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4516 if (!newNetwork.created) return; 4517 boolean keep = newNetwork.isVPN(); 4518 boolean isNewDefault = false; 4519 NetworkAgentInfo oldDefaultNetwork = null; 4520 if (VDBG) log("rematching " + newNetwork.name()); 4521 // Find and migrate to this Network any NetworkRequests for 4522 // which this network is now the best. 4523 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4524 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4525 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4526 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4527 final NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4528 final boolean satisfies = newNetwork.satisfies(nri.request); 4529 if (newNetwork == currentNetwork && satisfies) { 4530 if (VDBG) { 4531 log("Network " + newNetwork.name() + " was already satisfying" + 4532 " request " + nri.request.requestId + ". No change."); 4533 } 4534 keep = true; 4535 continue; 4536 } 4537 4538 // check if it satisfies the NetworkCapabilities 4539 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4540 if (satisfies) { 4541 if (!nri.isRequest()) { 4542 // This is not a request, it's a callback listener. 4543 // Add it to newNetwork regardless of score. 4544 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4545 continue; 4546 } 4547 4548 // next check if it's better than any current network we're using for 4549 // this request 4550 if (VDBG) { 4551 log("currentScore = " + 4552 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4553 ", newScore = " + newNetwork.getCurrentScore()); 4554 } 4555 if (currentNetwork == null || 4556 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4557 if (VDBG) log("rematch for " + newNetwork.name()); 4558 if (currentNetwork != null) { 4559 if (VDBG) log(" accepting network in place of " + currentNetwork.name()); 4560 currentNetwork.networkRequests.remove(nri.request.requestId); 4561 currentNetwork.networkLingered.add(nri.request); 4562 affectedNetworks.add(currentNetwork); 4563 } else { 4564 if (VDBG) log(" accepting network in place of null"); 4565 } 4566 unlinger(newNetwork); 4567 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4568 if (!newNetwork.addRequest(nri.request)) { 4569 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4570 } 4571 addedRequests.add(nri); 4572 keep = true; 4573 // Tell NetworkFactories about the new score, so they can stop 4574 // trying to connect if they know they cannot match it. 4575 // TODO - this could get expensive if we have alot of requests for this 4576 // network. Think about if there is a way to reduce this. Push 4577 // netid->request mapping to each factory? 4578 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4579 if (mDefaultRequest.requestId == nri.request.requestId) { 4580 isNewDefault = true; 4581 oldDefaultNetwork = currentNetwork; 4582 } 4583 } 4584 } else if (newNetwork.networkRequests.get(nri.request.requestId) != null) { 4585 // If "newNetwork" is listed as satisfying "nri" but no longer satisfies "nri", 4586 // mark it as no longer satisfying "nri". Because networks are processed by 4587 // rematchAllNetworkAndRequests() in descending score order, "currentNetwork" will 4588 // match "newNetwork" before this loop will encounter a "currentNetwork" with higher 4589 // score than "newNetwork" and where "currentNetwork" no longer satisfies "nri". 4590 // This means this code doesn't have to handle the case where "currentNetwork" no 4591 // longer satisfies "nri" when "currentNetwork" does not equal "newNetwork". 4592 if (DBG) { 4593 log("Network " + newNetwork.name() + " stopped satisfying" + 4594 " request " + nri.request.requestId); 4595 } 4596 newNetwork.networkRequests.remove(nri.request.requestId); 4597 if (currentNetwork == newNetwork) { 4598 mNetworkForRequestId.remove(nri.request.requestId); 4599 sendUpdatedScoreToFactories(nri.request, 0); 4600 } else { 4601 if (nri.isRequest()) { 4602 Slog.wtf(TAG, "BUG: Removing request " + nri.request.requestId + " from " + 4603 newNetwork.name() + 4604 " without updating mNetworkForRequestId or factories!"); 4605 } 4606 } 4607 // TODO: technically, sending CALLBACK_LOST here is 4608 // incorrect if nri is a request (not a listen) and there 4609 // is a replacement network currently connected that can 4610 // satisfy it. However, the only capability that can both 4611 // a) be requested and b) change is NET_CAPABILITY_TRUSTED, 4612 // so this code is only incorrect for a network that loses 4613 // the TRUSTED capability, which is a rare case. 4614 callCallbackForRequest(nri, newNetwork, ConnectivityManager.CALLBACK_LOST); 4615 } 4616 } 4617 // Linger any networks that are no longer needed. 4618 for (NetworkAgentInfo nai : affectedNetworks) { 4619 if (nai.lingering) { 4620 // Already lingered. Nothing to do. This can only happen if "nai" is in 4621 // "affectedNetworks" twice. The reasoning being that to get added to 4622 // "affectedNetworks", "nai" must have been satisfying a NetworkRequest 4623 // (i.e. not lingered) so it could have only been lingered by this loop. 4624 // unneeded(nai) will be false and we'll call unlinger() below which would 4625 // be bad, so handle it here. 4626 } else if (unneeded(nai)) { 4627 linger(nai); 4628 } else { 4629 // Clear nai.networkLingered we might have added above. 4630 unlinger(nai); 4631 } 4632 } 4633 if (isNewDefault) { 4634 // Notify system services that this network is up. 4635 makeDefault(newNetwork, oldDefaultNetwork); 4636 synchronized (ConnectivityService.this) { 4637 // have a new default network, release the transition wakelock in 4638 // a second if it's held. The second pause is to allow apps 4639 // to reconnect over the new network 4640 if (mNetTransitionWakeLock.isHeld()) { 4641 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4642 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4643 mNetTransitionWakeLockSerialNumber, 0), 4644 1000); 4645 } 4646 } 4647 } 4648 4649 // do this after the default net is switched, but 4650 // before LegacyTypeTracker sends legacy broadcasts 4651 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4652 4653 if (isNewDefault) { 4654 // Maintain the illusion: since the legacy API only 4655 // understands one network at a time, we must pretend 4656 // that the current default network disconnected before 4657 // the new one connected. 4658 if (oldDefaultNetwork != null) { 4659 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4660 oldDefaultNetwork, true); 4661 } 4662 mDefaultInetConditionPublished = newNetwork.lastValidated ? 100 : 0; 4663 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4664 notifyLockdownVpn(newNetwork); 4665 } 4666 4667 if (keep) { 4668 // Notify battery stats service about this network, both the normal 4669 // interface and any stacked links. 4670 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4671 try { 4672 final IBatteryStats bs = BatteryStatsService.getService(); 4673 final int type = newNetwork.networkInfo.getType(); 4674 4675 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4676 bs.noteNetworkInterfaceType(baseIface, type); 4677 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4678 final String stackedIface = stacked.getInterfaceName(); 4679 bs.noteNetworkInterfaceType(stackedIface, type); 4680 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4681 } 4682 } catch (RemoteException ignored) { 4683 } 4684 4685 // This has to happen after the notifyNetworkCallbacks as that tickles each 4686 // ConnectivityManager instance so that legacy requests correctly bind dns 4687 // requests to this network. The legacy users are listening for this bcast 4688 // and will generally do a dns request so they can ensureRouteToHost and if 4689 // they do that before the callbacks happen they'll use the default network. 4690 // 4691 // TODO: Is there still a race here? We send the broadcast 4692 // after sending the callback, but if the app can receive the 4693 // broadcast before the callback, it might still break. 4694 // 4695 // This *does* introduce a race where if the user uses the new api 4696 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4697 // they may get old info. Reverse this after the old startUsing api is removed. 4698 // This is on top of the multiple intent sequencing referenced in the todo above. 4699 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4700 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4701 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4702 // legacy type tracker filters out repeat adds 4703 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4704 } 4705 } 4706 4707 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4708 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4709 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4710 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4711 if (newNetwork.isVPN()) { 4712 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4713 } 4714 } 4715 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4716 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4717 if (unneeded(nai)) { 4718 if (DBG) log("Reaping " + nai.name()); 4719 teardownUnneededNetwork(nai); 4720 } 4721 } 4722 } 4723 } 4724 4725 /** 4726 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4727 * being disconnected. 4728 * @param changed If only one Network's score or capabilities have been modified since the last 4729 * time this function was called, pass this Network in this argument, otherwise pass 4730 * null. 4731 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4732 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4733 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4734 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4735 * network's score. 4736 */ 4737 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4738 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4739 // to avoid the slowness. It is not simply enough to process just "changed", for 4740 // example in the case where "changed"'s score decreases and another network should begin 4741 // satifying a NetworkRequest that "changed" currently satisfies. 4742 4743 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4744 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4745 // rematchNetworkAndRequests() handles. 4746 if (changed != null && oldScore < changed.getCurrentScore()) { 4747 rematchNetworkAndRequests(changed, ReapUnvalidatedNetworks.REAP); 4748 } else { 4749 final NetworkAgentInfo[] nais = mNetworkAgentInfos.values().toArray( 4750 new NetworkAgentInfo[mNetworkAgentInfos.size()]); 4751 // Rematch higher scoring networks first to prevent requests first matching a lower 4752 // scoring network and then a higher scoring network, which could produce multiple 4753 // callbacks and inadvertently unlinger networks. 4754 Arrays.sort(nais); 4755 for (NetworkAgentInfo nai : nais) { 4756 rematchNetworkAndRequests(nai, 4757 // Only reap the last time through the loop. Reaping before all rematching 4758 // is complete could incorrectly teardown a network that hasn't yet been 4759 // rematched. 4760 (nai != nais[nais.length-1]) ? ReapUnvalidatedNetworks.DONT_REAP 4761 : ReapUnvalidatedNetworks.REAP); 4762 } 4763 } 4764 } 4765 4766 private void updateInetCondition(NetworkAgentInfo nai) { 4767 // Don't bother updating until we've graduated to validated at least once. 4768 if (!nai.everValidated) return; 4769 // For now only update icons for default connection. 4770 // TODO: Update WiFi and cellular icons separately. b/17237507 4771 if (!isDefaultNetwork(nai)) return; 4772 4773 int newInetCondition = nai.lastValidated ? 100 : 0; 4774 // Don't repeat publish. 4775 if (newInetCondition == mDefaultInetConditionPublished) return; 4776 4777 mDefaultInetConditionPublished = newInetCondition; 4778 sendInetConditionBroadcast(nai.networkInfo); 4779 } 4780 4781 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4782 if (mLockdownTracker != null) { 4783 if (nai != null && nai.isVPN()) { 4784 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4785 } else { 4786 mLockdownTracker.onNetworkInfoChanged(); 4787 } 4788 } 4789 } 4790 4791 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4792 NetworkInfo.State state = newInfo.getState(); 4793 NetworkInfo oldInfo = null; 4794 final int oldScore = networkAgent.getCurrentScore(); 4795 synchronized (networkAgent) { 4796 oldInfo = networkAgent.networkInfo; 4797 networkAgent.networkInfo = newInfo; 4798 } 4799 notifyLockdownVpn(networkAgent); 4800 4801 if (oldInfo != null && oldInfo.getState() == state) { 4802 if (oldInfo.isRoaming() != newInfo.isRoaming()) { 4803 if (VDBG) log("roaming status changed, notifying NetworkStatsService"); 4804 notifyIfacesChangedForNetworkStats(); 4805 } else if (VDBG) log("ignoring duplicate network state non-change"); 4806 // In either case, no further work should be needed. 4807 return; 4808 } 4809 if (DBG) { 4810 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4811 (oldInfo == null ? "null" : oldInfo.getState()) + 4812 " to " + state); 4813 } 4814 4815 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4816 try { 4817 // This should never fail. Specifying an already in use NetID will cause failure. 4818 if (networkAgent.isVPN()) { 4819 mNetd.createVirtualNetwork(networkAgent.network.netId, 4820 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4821 (networkAgent.networkMisc == null || 4822 !networkAgent.networkMisc.allowBypass)); 4823 } else { 4824 mNetd.createPhysicalNetwork(networkAgent.network.netId, 4825 networkAgent.networkCapabilities.hasCapability( 4826 NET_CAPABILITY_NOT_RESTRICTED) ? 4827 null : NetworkManagementService.PERMISSION_SYSTEM); 4828 } 4829 } catch (Exception e) { 4830 loge("Error creating network " + networkAgent.network.netId + ": " 4831 + e.getMessage()); 4832 return; 4833 } 4834 networkAgent.created = true; 4835 updateLinkProperties(networkAgent, null); 4836 notifyIfacesChangedForNetworkStats(); 4837 4838 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4839 scheduleUnvalidatedPrompt(networkAgent); 4840 4841 if (networkAgent.isVPN()) { 4842 // Temporarily disable the default proxy (not global). 4843 synchronized (mProxyLock) { 4844 if (!mDefaultProxyDisabled) { 4845 mDefaultProxyDisabled = true; 4846 if (mGlobalProxy == null && mDefaultProxy != null) { 4847 sendProxyBroadcast(null); 4848 } 4849 } 4850 } 4851 // TODO: support proxy per network. 4852 } 4853 4854 // Whether a particular NetworkRequest listen should cause signal strength thresholds to 4855 // be communicated to a particular NetworkAgent depends only on the network's immutable, 4856 // capabilities, so it only needs to be done once on initial connect, not every time the 4857 // network's capabilities change. Note that we do this before rematching the network, 4858 // so we could decide to tear it down immediately afterwards. That's fine though - on 4859 // disconnection NetworkAgents should stop any signal strength monitoring they have been 4860 // doing. 4861 updateSignalStrengthThresholds(networkAgent, "CONNECT", null); 4862 4863 // Consider network even though it is not yet validated. 4864 rematchNetworkAndRequests(networkAgent, ReapUnvalidatedNetworks.REAP); 4865 4866 // This has to happen after matching the requests, because callbacks are just requests. 4867 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4868 } else if (state == NetworkInfo.State.DISCONNECTED) { 4869 networkAgent.asyncChannel.disconnect(); 4870 if (networkAgent.isVPN()) { 4871 synchronized (mProxyLock) { 4872 if (mDefaultProxyDisabled) { 4873 mDefaultProxyDisabled = false; 4874 if (mGlobalProxy == null && mDefaultProxy != null) { 4875 sendProxyBroadcast(mDefaultProxy); 4876 } 4877 } 4878 } 4879 } 4880 } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) || 4881 state == NetworkInfo.State.SUSPENDED) { 4882 // going into or coming out of SUSPEND: rescore and notify 4883 if (networkAgent.getCurrentScore() != oldScore) { 4884 rematchAllNetworksAndRequests(networkAgent, oldScore); 4885 } 4886 notifyNetworkCallbacks(networkAgent, (state == NetworkInfo.State.SUSPENDED ? 4887 ConnectivityManager.CALLBACK_SUSPENDED : 4888 ConnectivityManager.CALLBACK_RESUMED)); 4889 mLegacyTypeTracker.update(networkAgent); 4890 } 4891 } 4892 4893 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4894 if (VDBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4895 if (score < 0) { 4896 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4897 "). Bumping score to min of 0"); 4898 score = 0; 4899 } 4900 4901 final int oldScore = nai.getCurrentScore(); 4902 nai.setCurrentScore(score); 4903 4904 rematchAllNetworksAndRequests(nai, oldScore); 4905 4906 sendUpdatedScoreToFactories(nai); 4907 } 4908 4909 // notify only this one new request of the current state 4910 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4911 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4912 // TODO - read state from monitor to decide what to send. 4913// if (nai.networkMonitor.isLingering()) { 4914// notifyType = NetworkCallbacks.LOSING; 4915// } else if (nai.networkMonitor.isEvaluating()) { 4916// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4917// } 4918 if (nri.mPendingIntent == null) { 4919 callCallbackForRequest(nri, nai, notifyType); 4920 } else { 4921 sendPendingIntentForRequest(nri, nai, notifyType); 4922 } 4923 } 4924 4925 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, DetailedState state, int type) { 4926 // The NetworkInfo we actually send out has no bearing on the real 4927 // state of affairs. For example, if the default connection is mobile, 4928 // and a request for HIPRI has just gone away, we need to pretend that 4929 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4930 // the state to DISCONNECTED, even though the network is of type MOBILE 4931 // and is still connected. 4932 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4933 info.setType(type); 4934 if (state != DetailedState.DISCONNECTED) { 4935 info.setDetailedState(state, null, info.getExtraInfo()); 4936 sendConnectedBroadcast(info); 4937 } else { 4938 info.setDetailedState(state, info.getReason(), info.getExtraInfo()); 4939 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4940 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4941 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4942 if (info.isFailover()) { 4943 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4944 nai.networkInfo.setFailover(false); 4945 } 4946 if (info.getReason() != null) { 4947 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4948 } 4949 if (info.getExtraInfo() != null) { 4950 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4951 } 4952 NetworkAgentInfo newDefaultAgent = null; 4953 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4954 newDefaultAgent = getDefaultNetwork(); 4955 if (newDefaultAgent != null) { 4956 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4957 newDefaultAgent.networkInfo); 4958 } else { 4959 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4960 } 4961 } 4962 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4963 mDefaultInetConditionPublished); 4964 sendStickyBroadcast(intent); 4965 if (newDefaultAgent != null) { 4966 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4967 } 4968 } 4969 } 4970 4971 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4972 if (VDBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4973 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4974 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4975 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4976 if (VDBG) log(" sending notification for " + nr); 4977 if (nri.mPendingIntent == null) { 4978 callCallbackForRequest(nri, networkAgent, notifyType); 4979 } else { 4980 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4981 } 4982 } 4983 } 4984 4985 private String notifyTypeToName(int notifyType) { 4986 switch (notifyType) { 4987 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4988 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4989 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4990 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4991 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4992 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4993 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4994 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4995 } 4996 return "UNKNOWN"; 4997 } 4998 4999 /** 5000 * Notify NetworkStatsService that the set of active ifaces has changed, or that one of the 5001 * properties tracked by NetworkStatsService on an active iface has changed. 5002 */ 5003 private void notifyIfacesChangedForNetworkStats() { 5004 try { 5005 mStatsService.forceUpdateIfaces(); 5006 } catch (Exception ignored) { 5007 } 5008 } 5009 5010 @Override 5011 public boolean addVpnAddress(String address, int prefixLength) { 5012 throwIfLockdownEnabled(); 5013 int user = UserHandle.getUserId(Binder.getCallingUid()); 5014 synchronized (mVpns) { 5015 return mVpns.get(user).addAddress(address, prefixLength); 5016 } 5017 } 5018 5019 @Override 5020 public boolean removeVpnAddress(String address, int prefixLength) { 5021 throwIfLockdownEnabled(); 5022 int user = UserHandle.getUserId(Binder.getCallingUid()); 5023 synchronized (mVpns) { 5024 return mVpns.get(user).removeAddress(address, prefixLength); 5025 } 5026 } 5027 5028 @Override 5029 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 5030 throwIfLockdownEnabled(); 5031 int user = UserHandle.getUserId(Binder.getCallingUid()); 5032 boolean success; 5033 synchronized (mVpns) { 5034 success = mVpns.get(user).setUnderlyingNetworks(networks); 5035 } 5036 if (success) { 5037 notifyIfacesChangedForNetworkStats(); 5038 } 5039 return success; 5040 } 5041 5042 @Override 5043 public String getCaptivePortalServerUrl() { 5044 return NetworkMonitor.getCaptivePortalServerUrl(mContext); 5045 } 5046 5047 @Override 5048 public void startNattKeepalive(Network network, int intervalSeconds, Messenger messenger, 5049 IBinder binder, String srcAddr, int srcPort, String dstAddr) { 5050 enforceKeepalivePermission(); 5051 mKeepaliveTracker.startNattKeepalive( 5052 getNetworkAgentInfoForNetwork(network), 5053 intervalSeconds, messenger, binder, 5054 srcAddr, srcPort, dstAddr, ConnectivityManager.PacketKeepalive.NATT_PORT); 5055 } 5056 5057 @Override 5058 public void stopKeepalive(Network network, int slot) { 5059 mHandler.sendMessage(mHandler.obtainMessage( 5060 NetworkAgent.CMD_STOP_PACKET_KEEPALIVE, slot, PacketKeepalive.SUCCESS, network)); 5061 } 5062 5063 @Override 5064 public void factoryReset() { 5065 enforceConnectivityInternalPermission(); 5066 5067 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 5068 return; 5069 } 5070 5071 final int userId = UserHandle.getCallingUserId(); 5072 5073 // Turn airplane mode off 5074 setAirplaneMode(false); 5075 5076 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 5077 // Untether 5078 for (String tether : getTetheredIfaces()) { 5079 untether(tether); 5080 } 5081 } 5082 5083 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 5084 // Turn VPN off 5085 VpnConfig vpnConfig = getVpnConfig(userId); 5086 if (vpnConfig != null) { 5087 if (vpnConfig.legacy) { 5088 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 5089 } else { 5090 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 5091 // in the future without user intervention. 5092 setVpnPackageAuthorization(vpnConfig.user, userId, false); 5093 5094 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 5095 } 5096 } 5097 } 5098 } 5099 5100 @VisibleForTesting 5101 public NetworkMonitor createNetworkMonitor(Context context, Handler handler, 5102 NetworkAgentInfo nai, NetworkRequest defaultRequest) { 5103 return new NetworkMonitor(context, handler, nai, defaultRequest); 5104 } 5105 5106 private static void logDefaultNetworkEvent(NetworkAgentInfo newNai, NetworkAgentInfo prevNai) { 5107 int newNetid = NETID_UNSET; 5108 int prevNetid = NETID_UNSET; 5109 int[] transports = new int[0]; 5110 boolean hadIPv4 = false; 5111 boolean hadIPv6 = false; 5112 5113 if (newNai != null) { 5114 newNetid = newNai.network.netId; 5115 transports = newNai.networkCapabilities.getTransportTypes(); 5116 } 5117 if (prevNai != null) { 5118 prevNetid = prevNai.network.netId; 5119 final LinkProperties lp = prevNai.linkProperties; 5120 hadIPv4 = lp.hasIPv4Address() && lp.hasIPv4DefaultRoute(); 5121 hadIPv6 = lp.hasGlobalIPv6Address() && lp.hasIPv6DefaultRoute(); 5122 } 5123 5124 DefaultNetworkEvent.logEvent(newNetid, transports, prevNetid, hadIPv4, hadIPv6); 5125 } 5126} 5127