ConnectivityService.java revision 3ac71b7f870e6b0a2bb03fceeba8d330830a7412
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.AlarmManager; 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.IConnectivityManager; 51import android.net.INetworkManagementEventObserver; 52import android.net.INetworkPolicyListener; 53import android.net.INetworkPolicyManager; 54import android.net.INetworkStatsService; 55import android.net.LinkProperties; 56import android.net.LinkProperties.CompareResult; 57import android.net.Network; 58import android.net.NetworkAgent; 59import android.net.NetworkCapabilities; 60import android.net.NetworkConfig; 61import android.net.NetworkInfo; 62import android.net.NetworkInfo.DetailedState; 63import android.net.NetworkMisc; 64import android.net.NetworkQuotaInfo; 65import android.net.NetworkRequest; 66import android.net.NetworkState; 67import android.net.NetworkUtils; 68import android.net.Proxy; 69import android.net.ProxyInfo; 70import android.net.RouteInfo; 71import android.net.UidRange; 72import android.net.Uri; 73import android.os.Binder; 74import android.os.Bundle; 75import android.os.FileUtils; 76import android.os.Handler; 77import android.os.HandlerThread; 78import android.os.IBinder; 79import android.os.INetworkManagementService; 80import android.os.Looper; 81import android.os.Message; 82import android.os.Messenger; 83import android.os.ParcelFileDescriptor; 84import android.os.PowerManager; 85import android.os.Process; 86import android.os.RemoteException; 87import android.os.SystemClock; 88import android.os.SystemProperties; 89import android.os.UserHandle; 90import android.os.UserManager; 91import android.provider.Settings; 92import android.security.Credentials; 93import android.security.KeyStore; 94import android.telephony.TelephonyManager; 95import android.text.TextUtils; 96import android.util.LocalLog; 97import android.util.LocalLog.ReadOnlyLocalLog; 98import android.util.Pair; 99import android.util.Slog; 100import android.util.SparseArray; 101import android.util.SparseBooleanArray; 102import android.util.SparseIntArray; 103import android.util.Xml; 104 105import com.android.internal.R; 106import com.android.internal.annotations.GuardedBy; 107import com.android.internal.annotations.VisibleForTesting; 108import com.android.internal.app.IBatteryStats; 109import com.android.internal.net.LegacyVpnInfo; 110import com.android.internal.net.NetworkStatsFactory; 111import com.android.internal.net.VpnConfig; 112import com.android.internal.net.VpnInfo; 113import com.android.internal.net.VpnProfile; 114import com.android.internal.telephony.DctConstants; 115import com.android.internal.util.AsyncChannel; 116import com.android.internal.util.IndentingPrintWriter; 117import com.android.internal.util.XmlUtils; 118import com.android.server.am.BatteryStatsService; 119import com.android.server.connectivity.DataConnectionStats; 120import com.android.server.connectivity.NetworkDiagnostics; 121import com.android.server.connectivity.Nat464Xlat; 122import com.android.server.connectivity.NetworkAgentInfo; 123import com.android.server.connectivity.NetworkMonitor; 124import com.android.server.connectivity.PacManager; 125import com.android.server.connectivity.PermissionMonitor; 126import com.android.server.connectivity.Tethering; 127import com.android.server.connectivity.Vpn; 128import com.android.server.net.BaseNetworkObserver; 129import com.android.server.net.LockdownVpnTracker; 130import com.google.android.collect.Lists; 131import com.google.android.collect.Sets; 132 133import org.xmlpull.v1.XmlPullParser; 134import org.xmlpull.v1.XmlPullParserException; 135 136import java.io.File; 137import java.io.FileDescriptor; 138import java.io.FileNotFoundException; 139import java.io.FileReader; 140import java.io.IOException; 141import java.io.PrintWriter; 142import java.net.Inet4Address; 143import java.net.InetAddress; 144import java.net.UnknownHostException; 145import java.util.ArrayDeque; 146import java.util.ArrayList; 147import java.util.Arrays; 148import java.util.Collection; 149import java.util.HashMap; 150import java.util.HashSet; 151import java.util.Iterator; 152import java.util.List; 153import java.util.Map; 154import java.util.Objects; 155import java.util.concurrent.atomic.AtomicInteger; 156 157/** 158 * @hide 159 */ 160public class ConnectivityService extends IConnectivityManager.Stub 161 implements PendingIntent.OnFinished { 162 private static final String TAG = "ConnectivityService"; 163 164 private static final boolean DBG = true; 165 private static final boolean VDBG = false; 166 167 private static final boolean LOGD_RULES = false; 168 169 // TODO: create better separation between radio types and network types 170 171 // how long to wait before switching back to a radio's default network 172 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 173 // system property that can override the above value 174 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 175 "android.telephony.apn-restore"; 176 177 // How long to wait before putting up a "This network doesn't have an Internet connection, 178 // connect anyway?" dialog after the user selects a network that doesn't validate. 179 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 180 181 // How long to delay to removal of a pending intent based request. 182 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 183 private final int mReleasePendingIntentDelayMs; 184 185 private Tethering mTethering; 186 187 private final PermissionMonitor mPermissionMonitor; 188 189 private KeyStore mKeyStore; 190 191 @GuardedBy("mVpns") 192 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 193 194 private boolean mLockdownEnabled; 195 private LockdownVpnTracker mLockdownTracker; 196 197 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 198 private Object mRulesLock = new Object(); 199 /** Currently active network rules by UID. */ 200 private SparseIntArray mUidRules = new SparseIntArray(); 201 /** Set of ifaces that are costly. */ 202 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 203 204 final private Context mContext; 205 private int mNetworkPreference; 206 // 0 is full bad, 100 is full good 207 private int mDefaultInetConditionPublished = 0; 208 209 private int mNumDnsEntries; 210 211 private boolean mTestMode; 212 private static ConnectivityService sServiceInstance; 213 214 private INetworkManagementService mNetd; 215 private INetworkStatsService mStatsService; 216 private INetworkPolicyManager mPolicyManager; 217 218 private String mCurrentTcpBufferSizes; 219 220 private static final int ENABLED = 1; 221 private static final int DISABLED = 0; 222 223 private enum ReapUnvalidatedNetworks { 224 // Tear down networks that have no chance (e.g. even if validated) of becoming 225 // the highest scoring network satisfying a NetworkRequest. This should be passed when 226 // all networks have been rematched against all NetworkRequests. 227 REAP, 228 // Don't reap networks. This should be passed when some networks have not yet been 229 // rematched against all NetworkRequests. 230 DONT_REAP 231 }; 232 233 /** 234 * used internally to change our mobile data enabled flag 235 */ 236 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 237 238 /** 239 * used internally to clear a wakelock when transitioning 240 * from one net to another. Clear happens when we get a new 241 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 242 * after a timeout if no network is found (typically 1 min). 243 */ 244 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 245 246 /** 247 * used internally to reload global proxy settings 248 */ 249 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 250 251 /** 252 * used internally to send a sticky broadcast delayed. 253 */ 254 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 255 256 /** 257 * PAC manager has received new port. 258 */ 259 private static final int EVENT_PROXY_HAS_CHANGED = 16; 260 261 /** 262 * used internally when registering NetworkFactories 263 * obj = NetworkFactoryInfo 264 */ 265 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 266 267 /** 268 * used internally when registering NetworkAgents 269 * obj = Messenger 270 */ 271 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 272 273 /** 274 * used to add a network request 275 * includes a NetworkRequestInfo 276 */ 277 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 278 279 /** 280 * indicates a timeout period is over - check if we had a network yet or not 281 * and if not, call the timeout calback (but leave the request live until they 282 * cancel it. 283 * includes a NetworkRequestInfo 284 */ 285 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 286 287 /** 288 * used to add a network listener - no request 289 * includes a NetworkRequestInfo 290 */ 291 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 292 293 /** 294 * used to remove a network request, either a listener or a real request 295 * arg1 = UID of caller 296 * obj = NetworkRequest 297 */ 298 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 299 300 /** 301 * used internally when registering NetworkFactories 302 * obj = Messenger 303 */ 304 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 305 306 /** 307 * used internally to expire a wakelock when transitioning 308 * from one net to another. Expire happens when we fail to find 309 * a new network (typically after 1 minute) - 310 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 311 * a replacement network. 312 */ 313 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 314 315 /** 316 * Used internally to indicate the system is ready. 317 */ 318 private static final int EVENT_SYSTEM_READY = 25; 319 320 /** 321 * used to add a network request with a pending intent 322 * obj = NetworkRequestInfo 323 */ 324 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 325 326 /** 327 * used to remove a pending intent and its associated network request. 328 * arg1 = UID of caller 329 * obj = PendingIntent 330 */ 331 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 332 333 /** 334 * used to specify whether a network should be used even if unvalidated. 335 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 336 * arg2 = whether to remember this choice in the future (1 or 0) 337 * obj = network 338 */ 339 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 340 341 /** 342 * used to ask the user to confirm a connection to an unvalidated network. 343 * obj = network 344 */ 345 private static final int EVENT_PROMPT_UNVALIDATED = 29; 346 347 /** 348 * used internally to (re)configure mobile data always-on settings. 349 */ 350 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 351 352 /** 353 * used to add a network listener with a pending intent 354 * obj = NetworkRequestInfo 355 */ 356 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 357 358 /** Handler used for internal events. */ 359 final private InternalHandler mHandler; 360 /** Handler used for incoming {@link NetworkStateTracker} events. */ 361 final private NetworkStateTrackerHandler mTrackerHandler; 362 363 private boolean mSystemReady; 364 private Intent mInitialBroadcast; 365 366 private PowerManager.WakeLock mNetTransitionWakeLock; 367 private String mNetTransitionWakeLockCausedBy = ""; 368 private int mNetTransitionWakeLockSerialNumber; 369 private int mNetTransitionWakeLockTimeout; 370 private final PowerManager.WakeLock mPendingIntentWakeLock; 371 372 private InetAddress mDefaultDns; 373 374 // used in DBG mode to track inet condition reports 375 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 376 private ArrayList mInetLog; 377 378 // track the current default http proxy - tell the world if we get a new one (real change) 379 private volatile ProxyInfo mDefaultProxy = null; 380 private Object mProxyLock = new Object(); 381 private boolean mDefaultProxyDisabled = false; 382 383 // track the global proxy. 384 private ProxyInfo mGlobalProxy = null; 385 386 private PacManager mPacManager = null; 387 388 final private SettingsObserver mSettingsObserver; 389 390 private UserManager mUserManager; 391 392 NetworkConfig[] mNetConfigs; 393 int mNetworksDefined; 394 395 // the set of network types that can only be enabled by system/sig apps 396 List mProtectedNetworks; 397 398 private DataConnectionStats mDataConnectionStats; 399 400 TelephonyManager mTelephonyManager; 401 402 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 403 private final static int MIN_NET_ID = 100; // some reserved marks 404 private final static int MAX_NET_ID = 65535; 405 private int mNextNetId = MIN_NET_ID; 406 407 // sequence number of NetworkRequests 408 private int mNextNetworkRequestId = 1; 409 410 // Array of <Network,ReadOnlyLocalLogs> tracking network validation and results 411 private static final int MAX_VALIDATION_LOGS = 10; 412 private final ArrayDeque<Pair<Network,ReadOnlyLocalLog>> mValidationLogs = 413 new ArrayDeque<Pair<Network,ReadOnlyLocalLog>>(MAX_VALIDATION_LOGS); 414 415 private void addValidationLogs(ReadOnlyLocalLog log, Network network) { 416 synchronized(mValidationLogs) { 417 while (mValidationLogs.size() >= MAX_VALIDATION_LOGS) { 418 mValidationLogs.removeLast(); 419 } 420 mValidationLogs.addFirst(new Pair(network, log)); 421 } 422 } 423 424 /** 425 * Implements support for the legacy "one network per network type" model. 426 * 427 * We used to have a static array of NetworkStateTrackers, one for each 428 * network type, but that doesn't work any more now that we can have, 429 * for example, more that one wifi network. This class stores all the 430 * NetworkAgentInfo objects that support a given type, but the legacy 431 * API will only see the first one. 432 * 433 * It serves two main purposes: 434 * 435 * 1. Provide information about "the network for a given type" (since this 436 * API only supports one). 437 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 438 * the first network for a given type changes, or if the default network 439 * changes. 440 */ 441 private class LegacyTypeTracker { 442 443 private static final boolean DBG = true; 444 private static final boolean VDBG = false; 445 private static final String TAG = "CSLegacyTypeTracker"; 446 447 /** 448 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 449 * Each list holds references to all NetworkAgentInfos that are used to 450 * satisfy requests for that network type. 451 * 452 * This array is built out at startup such that an unsupported network 453 * doesn't get an ArrayList instance, making this a tristate: 454 * unsupported, supported but not active and active. 455 * 456 * The actual lists are populated when we scan the network types that 457 * are supported on this device. 458 */ 459 private ArrayList<NetworkAgentInfo> mTypeLists[]; 460 461 public LegacyTypeTracker() { 462 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 463 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 464 } 465 466 public void addSupportedType(int type) { 467 if (mTypeLists[type] != null) { 468 throw new IllegalStateException( 469 "legacy list for type " + type + "already initialized"); 470 } 471 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 472 } 473 474 public boolean isTypeSupported(int type) { 475 return isNetworkTypeValid(type) && mTypeLists[type] != null; 476 } 477 478 public NetworkAgentInfo getNetworkForType(int type) { 479 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 480 return mTypeLists[type].get(0); 481 } else { 482 return null; 483 } 484 } 485 486 private void maybeLogBroadcast(NetworkAgentInfo nai, DetailedState state, int type, 487 boolean isDefaultNetwork) { 488 if (DBG) { 489 log("Sending " + state + 490 " broadcast for type " + type + " " + nai.name() + 491 " isDefaultNetwork=" + isDefaultNetwork); 492 } 493 } 494 495 /** Adds the given network to the specified legacy type list. */ 496 public void add(int type, NetworkAgentInfo nai) { 497 if (!isTypeSupported(type)) { 498 return; // Invalid network type. 499 } 500 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 501 502 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 503 if (list.contains(nai)) { 504 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 505 return; 506 } 507 508 list.add(nai); 509 510 // Send a broadcast if this is the first network of its type or if it's the default. 511 final boolean isDefaultNetwork = isDefaultNetwork(nai); 512 if (list.size() == 1 || isDefaultNetwork) { 513 maybeLogBroadcast(nai, DetailedState.CONNECTED, type, isDefaultNetwork); 514 sendLegacyNetworkBroadcast(nai, DetailedState.CONNECTED, type); 515 } 516 } 517 518 /** Removes the given network from the specified legacy type list. */ 519 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 520 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 521 if (list == null || list.isEmpty()) { 522 return; 523 } 524 525 final boolean wasFirstNetwork = list.get(0).equals(nai); 526 527 if (!list.remove(nai)) { 528 return; 529 } 530 531 final DetailedState state = DetailedState.DISCONNECTED; 532 533 if (wasFirstNetwork || wasDefault) { 534 maybeLogBroadcast(nai, state, type, wasDefault); 535 sendLegacyNetworkBroadcast(nai, state, type); 536 } 537 538 if (!list.isEmpty() && wasFirstNetwork) { 539 if (DBG) log("Other network available for type " + type + 540 ", sending connected broadcast"); 541 final NetworkAgentInfo replacement = list.get(0); 542 maybeLogBroadcast(replacement, state, type, isDefaultNetwork(replacement)); 543 sendLegacyNetworkBroadcast(replacement, state, type); 544 } 545 } 546 547 /** Removes the given network from all legacy type lists. */ 548 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 549 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 550 for (int type = 0; type < mTypeLists.length; type++) { 551 remove(type, nai, wasDefault); 552 } 553 } 554 555 // send out another legacy broadcast - currently only used for suspend/unsuspend 556 // toggle 557 public void update(NetworkAgentInfo nai) { 558 final boolean isDefault = isDefaultNetwork(nai); 559 final DetailedState state = nai.networkInfo.getDetailedState(); 560 for (int type = 0; type < mTypeLists.length; type++) { 561 final ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 562 final boolean contains = (list != null && list.contains(nai)); 563 final boolean isFirst = (list != null && list.size() > 0 && nai == list.get(0)); 564 if (isFirst || (contains && isDefault)) { 565 maybeLogBroadcast(nai, state, type, isDefault); 566 sendLegacyNetworkBroadcast(nai, state, type); 567 } 568 } 569 } 570 571 private String naiToString(NetworkAgentInfo nai) { 572 String name = (nai != null) ? nai.name() : "null"; 573 String state = (nai.networkInfo != null) ? 574 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 575 "???/???"; 576 return name + " " + state; 577 } 578 579 public void dump(IndentingPrintWriter pw) { 580 pw.println("mLegacyTypeTracker:"); 581 pw.increaseIndent(); 582 pw.print("Supported types:"); 583 for (int type = 0; type < mTypeLists.length; type++) { 584 if (mTypeLists[type] != null) pw.print(" " + type); 585 } 586 pw.println(); 587 pw.println("Current state:"); 588 pw.increaseIndent(); 589 for (int type = 0; type < mTypeLists.length; type++) { 590 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 591 for (NetworkAgentInfo nai : mTypeLists[type]) { 592 pw.println(type + " " + naiToString(nai)); 593 } 594 } 595 pw.decreaseIndent(); 596 pw.decreaseIndent(); 597 pw.println(); 598 } 599 600 // This class needs its own log method because it has a different TAG. 601 private void log(String s) { 602 Slog.d(TAG, s); 603 } 604 605 } 606 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 607 608 public ConnectivityService(Context context, INetworkManagementService netManager, 609 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 610 if (DBG) log("ConnectivityService starting up"); 611 612 mDefaultRequest = createInternetRequestForTransport(-1); 613 mNetworkRequests.put(mDefaultRequest, new NetworkRequestInfo( 614 null, mDefaultRequest, new Binder(), NetworkRequestInfo.REQUEST)); 615 616 mDefaultMobileDataRequest = createInternetRequestForTransport( 617 NetworkCapabilities.TRANSPORT_CELLULAR); 618 619 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 620 handlerThread.start(); 621 mHandler = new InternalHandler(handlerThread.getLooper()); 622 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 623 624 // setup our unique device name 625 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 626 String id = Settings.Secure.getString(context.getContentResolver(), 627 Settings.Secure.ANDROID_ID); 628 if (id != null && id.length() > 0) { 629 String name = new String("android-").concat(id); 630 SystemProperties.set("net.hostname", name); 631 } 632 } 633 634 // read our default dns server ip 635 String dns = Settings.Global.getString(context.getContentResolver(), 636 Settings.Global.DEFAULT_DNS_SERVER); 637 if (dns == null || dns.length() == 0) { 638 dns = context.getResources().getString( 639 com.android.internal.R.string.config_default_dns_server); 640 } 641 try { 642 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 643 } catch (IllegalArgumentException e) { 644 loge("Error setting defaultDns using " + dns); 645 } 646 647 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 648 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 649 650 mContext = checkNotNull(context, "missing Context"); 651 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 652 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 653 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 654 mKeyStore = KeyStore.getInstance(); 655 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 656 657 try { 658 mPolicyManager.registerListener(mPolicyListener); 659 } catch (RemoteException e) { 660 // ouch, no rules updates means some processes may never get network 661 loge("unable to register INetworkPolicyListener" + e.toString()); 662 } 663 664 final PowerManager powerManager = (PowerManager) context.getSystemService( 665 Context.POWER_SERVICE); 666 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 667 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 668 com.android.internal.R.integer.config_networkTransitionTimeout); 669 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 670 671 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 672 673 // TODO: What is the "correct" way to do determine if this is a wifi only device? 674 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 675 log("wifiOnly=" + wifiOnly); 676 String[] naStrings = context.getResources().getStringArray( 677 com.android.internal.R.array.networkAttributes); 678 for (String naString : naStrings) { 679 try { 680 NetworkConfig n = new NetworkConfig(naString); 681 if (VDBG) log("naString=" + naString + " config=" + n); 682 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 683 loge("Error in networkAttributes - ignoring attempt to define type " + 684 n.type); 685 continue; 686 } 687 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 688 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 689 n.type); 690 continue; 691 } 692 if (mNetConfigs[n.type] != null) { 693 loge("Error in networkAttributes - ignoring attempt to redefine type " + 694 n.type); 695 continue; 696 } 697 mLegacyTypeTracker.addSupportedType(n.type); 698 699 mNetConfigs[n.type] = n; 700 mNetworksDefined++; 701 } catch(Exception e) { 702 // ignore it - leave the entry null 703 } 704 } 705 706 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 707 if (mNetConfigs[TYPE_VPN] == null) { 708 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 709 // don't need to add TYPE_VPN to mNetConfigs. 710 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 711 mNetworksDefined++; // used only in the log() statement below. 712 } 713 714 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 715 716 mProtectedNetworks = new ArrayList<Integer>(); 717 int[] protectedNetworks = context.getResources().getIntArray( 718 com.android.internal.R.array.config_protectedNetworks); 719 for (int p : protectedNetworks) { 720 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 721 mProtectedNetworks.add(p); 722 } else { 723 if (DBG) loge("Ignoring protectedNetwork " + p); 724 } 725 } 726 727 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 728 && SystemProperties.get("ro.build.type").equals("eng"); 729 730 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 731 732 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 733 734 //set up the listener for user state for creating user VPNs 735 IntentFilter intentFilter = new IntentFilter(); 736 intentFilter.addAction(Intent.ACTION_USER_STARTING); 737 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 738 mContext.registerReceiverAsUser( 739 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 740 741 try { 742 mNetd.registerObserver(mTethering); 743 mNetd.registerObserver(mDataActivityObserver); 744 } catch (RemoteException e) { 745 loge("Error registering observer :" + e); 746 } 747 748 if (DBG) { 749 mInetLog = new ArrayList(); 750 } 751 752 mSettingsObserver = new SettingsObserver(mContext, mHandler); 753 registerSettingsCallbacks(); 754 755 mDataConnectionStats = new DataConnectionStats(mContext); 756 mDataConnectionStats.startMonitoring(); 757 758 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 759 760 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 761 } 762 763 private NetworkRequest createInternetRequestForTransport(int transportType) { 764 NetworkCapabilities netCap = new NetworkCapabilities(); 765 netCap.addCapability(NET_CAPABILITY_INTERNET); 766 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 767 if (transportType > -1) { 768 netCap.addTransportType(transportType); 769 } 770 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 771 } 772 773 private void handleMobileDataAlwaysOn() { 774 final boolean enable = (Settings.Global.getInt( 775 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 776 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 777 if (enable == isEnabled) { 778 return; // Nothing to do. 779 } 780 781 if (enable) { 782 handleRegisterNetworkRequest(new NetworkRequestInfo( 783 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestInfo.REQUEST)); 784 } else { 785 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 786 } 787 } 788 789 private void registerSettingsCallbacks() { 790 // Watch for global HTTP proxy changes. 791 mSettingsObserver.observe( 792 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 793 EVENT_APPLY_GLOBAL_HTTP_PROXY); 794 795 // Watch for whether or not to keep mobile data always on. 796 mSettingsObserver.observe( 797 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 798 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 799 } 800 801 private synchronized int nextNetworkRequestId() { 802 return mNextNetworkRequestId++; 803 } 804 805 @VisibleForTesting 806 protected int reserveNetId() { 807 synchronized (mNetworkForNetId) { 808 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 809 int netId = mNextNetId; 810 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 811 // Make sure NetID unused. http://b/16815182 812 if (!mNetIdInUse.get(netId)) { 813 mNetIdInUse.put(netId, true); 814 return netId; 815 } 816 } 817 } 818 throw new IllegalStateException("No free netIds"); 819 } 820 821 private NetworkState getFilteredNetworkState(int networkType, int uid) { 822 NetworkInfo info = null; 823 LinkProperties lp = null; 824 NetworkCapabilities nc = null; 825 Network network = null; 826 String subscriberId = null; 827 828 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 829 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 830 if (nai != null) { 831 synchronized (nai) { 832 info = new NetworkInfo(nai.networkInfo); 833 lp = new LinkProperties(nai.linkProperties); 834 nc = new NetworkCapabilities(nai.networkCapabilities); 835 // Network objects are outwardly immutable so there is no point to duplicating. 836 // Duplicating also precludes sharing socket factories and connection pools. 837 network = nai.network; 838 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 839 } 840 info.setType(networkType); 841 } else { 842 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 843 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 844 info.setIsAvailable(true); 845 lp = new LinkProperties(); 846 nc = new NetworkCapabilities(); 847 network = null; 848 } 849 info = getFilteredNetworkInfo(info, lp, uid); 850 } 851 852 return new NetworkState(info, lp, nc, network, subscriberId, null); 853 } 854 855 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 856 if (network == null) { 857 return null; 858 } 859 synchronized (mNetworkForNetId) { 860 return mNetworkForNetId.get(network.netId); 861 } 862 }; 863 864 private Network[] getVpnUnderlyingNetworks(int uid) { 865 if (!mLockdownEnabled) { 866 int user = UserHandle.getUserId(uid); 867 synchronized (mVpns) { 868 Vpn vpn = mVpns.get(user); 869 if (vpn != null && vpn.appliesToUid(uid)) { 870 return vpn.getUnderlyingNetworks(); 871 } 872 } 873 } 874 return null; 875 } 876 877 private NetworkState getUnfilteredActiveNetworkState(int uid) { 878 NetworkInfo info = null; 879 LinkProperties lp = null; 880 NetworkCapabilities nc = null; 881 Network network = null; 882 String subscriberId = null; 883 884 NetworkAgentInfo nai = getDefaultNetwork(); 885 886 final Network[] networks = getVpnUnderlyingNetworks(uid); 887 if (networks != null) { 888 // getUnderlyingNetworks() returns: 889 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 890 // empty array => the VPN explicitly said "no default network". 891 // non-empty array => the VPN specified one or more default networks; we use the 892 // first one. 893 if (networks.length > 0) { 894 nai = getNetworkAgentInfoForNetwork(networks[0]); 895 } else { 896 nai = null; 897 } 898 } 899 900 if (nai != null) { 901 synchronized (nai) { 902 info = new NetworkInfo(nai.networkInfo); 903 lp = new LinkProperties(nai.linkProperties); 904 nc = new NetworkCapabilities(nai.networkCapabilities); 905 // Network objects are outwardly immutable so there is no point to duplicating. 906 // Duplicating also precludes sharing socket factories and connection pools. 907 network = nai.network; 908 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 909 } 910 } 911 912 return new NetworkState(info, lp, nc, network, subscriberId, null); 913 } 914 915 /** 916 * Check if UID should be blocked from using the network with the given LinkProperties. 917 */ 918 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 919 final boolean networkCostly; 920 final int uidRules; 921 922 final String iface = (lp == null ? "" : lp.getInterfaceName()); 923 synchronized (mRulesLock) { 924 networkCostly = mMeteredIfaces.contains(iface); 925 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 926 } 927 928 if ((uidRules & RULE_REJECT_ALL) != 0 929 || (networkCostly && (uidRules & RULE_REJECT_METERED) != 0)) { 930 return true; 931 } 932 933 // no restrictive rules; network is visible 934 return false; 935 } 936 937 /** 938 * Return a filtered {@link NetworkInfo}, potentially marked 939 * {@link DetailedState#BLOCKED} based on 940 * {@link #isNetworkWithLinkPropertiesBlocked}. 941 */ 942 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 943 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 944 // network is blocked; clone and override state 945 info = new NetworkInfo(info); 946 info.setDetailedState(DetailedState.BLOCKED, null, null); 947 if (VDBG) { 948 log("returning Blocked NetworkInfo for ifname=" + 949 lp.getInterfaceName() + ", uid=" + uid); 950 } 951 } 952 if (info != null && mLockdownTracker != null) { 953 info = mLockdownTracker.augmentNetworkInfo(info); 954 if (VDBG) log("returning Locked NetworkInfo"); 955 } 956 return info; 957 } 958 959 /** 960 * Return NetworkInfo for the active (i.e., connected) network interface. 961 * It is assumed that at most one network is active at a time. If more 962 * than one is active, it is indeterminate which will be returned. 963 * @return the info for the active network, or {@code null} if none is 964 * active 965 */ 966 @Override 967 public NetworkInfo getActiveNetworkInfo() { 968 enforceAccessPermission(); 969 final int uid = Binder.getCallingUid(); 970 NetworkState state = getUnfilteredActiveNetworkState(uid); 971 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 972 } 973 974 @Override 975 public Network getActiveNetwork() { 976 enforceAccessPermission(); 977 final int uid = Binder.getCallingUid(); 978 final int user = UserHandle.getUserId(uid); 979 int vpnNetId = NETID_UNSET; 980 synchronized (mVpns) { 981 final Vpn vpn = mVpns.get(user); 982 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 983 } 984 NetworkAgentInfo nai; 985 if (vpnNetId != NETID_UNSET) { 986 synchronized (mNetworkForNetId) { 987 nai = mNetworkForNetId.get(vpnNetId); 988 } 989 if (nai != null) return nai.network; 990 } 991 nai = getDefaultNetwork(); 992 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 993 return nai != null ? nai.network : null; 994 } 995 996 public NetworkInfo getActiveNetworkInfoUnfiltered() { 997 enforceAccessPermission(); 998 final int uid = Binder.getCallingUid(); 999 NetworkState state = getUnfilteredActiveNetworkState(uid); 1000 return state.networkInfo; 1001 } 1002 1003 @Override 1004 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1005 enforceConnectivityInternalPermission(); 1006 NetworkState state = getUnfilteredActiveNetworkState(uid); 1007 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1008 } 1009 1010 @Override 1011 public NetworkInfo getNetworkInfo(int networkType) { 1012 enforceAccessPermission(); 1013 final int uid = Binder.getCallingUid(); 1014 if (getVpnUnderlyingNetworks(uid) != null) { 1015 // A VPN is active, so we may need to return one of its underlying networks. This 1016 // information is not available in LegacyTypeTracker, so we have to get it from 1017 // getUnfilteredActiveNetworkState. 1018 NetworkState state = getUnfilteredActiveNetworkState(uid); 1019 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1020 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1021 } 1022 } 1023 NetworkState state = getFilteredNetworkState(networkType, uid); 1024 return state.networkInfo; 1025 } 1026 1027 @Override 1028 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1029 enforceAccessPermission(); 1030 final int uid = Binder.getCallingUid(); 1031 NetworkInfo info = null; 1032 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1033 if (nai != null) { 1034 synchronized (nai) { 1035 info = new NetworkInfo(nai.networkInfo); 1036 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1037 } 1038 } 1039 return info; 1040 } 1041 1042 @Override 1043 public NetworkInfo[] getAllNetworkInfo() { 1044 enforceAccessPermission(); 1045 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1046 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1047 networkType++) { 1048 NetworkInfo info = getNetworkInfo(networkType); 1049 if (info != null) { 1050 result.add(info); 1051 } 1052 } 1053 return result.toArray(new NetworkInfo[result.size()]); 1054 } 1055 1056 @Override 1057 public Network getNetworkForType(int networkType) { 1058 enforceAccessPermission(); 1059 final int uid = Binder.getCallingUid(); 1060 NetworkState state = getFilteredNetworkState(networkType, uid); 1061 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1062 return state.network; 1063 } 1064 return null; 1065 } 1066 1067 @Override 1068 public Network[] getAllNetworks() { 1069 enforceAccessPermission(); 1070 synchronized (mNetworkForNetId) { 1071 final Network[] result = new Network[mNetworkForNetId.size()]; 1072 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1073 result[i] = mNetworkForNetId.valueAt(i).network; 1074 } 1075 return result; 1076 } 1077 } 1078 1079 @Override 1080 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1081 // The basic principle is: if an app's traffic could possibly go over a 1082 // network, without the app doing anything multinetwork-specific, 1083 // (hence, by "default"), then include that network's capabilities in 1084 // the array. 1085 // 1086 // In the normal case, app traffic only goes over the system's default 1087 // network connection, so that's the only network returned. 1088 // 1089 // With a VPN in force, some app traffic may go into the VPN, and thus 1090 // over whatever underlying networks the VPN specifies, while other app 1091 // traffic may go over the system default network (e.g.: a split-tunnel 1092 // VPN, or an app disallowed by the VPN), so the set of networks 1093 // returned includes the VPN's underlying networks and the system 1094 // default. 1095 enforceAccessPermission(); 1096 1097 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1098 1099 NetworkAgentInfo nai = getDefaultNetwork(); 1100 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1101 if (nc != null) { 1102 result.put(nai.network, nc); 1103 } 1104 1105 if (!mLockdownEnabled) { 1106 synchronized (mVpns) { 1107 Vpn vpn = mVpns.get(userId); 1108 if (vpn != null) { 1109 Network[] networks = vpn.getUnderlyingNetworks(); 1110 if (networks != null) { 1111 for (Network network : networks) { 1112 nai = getNetworkAgentInfoForNetwork(network); 1113 nc = getNetworkCapabilitiesInternal(nai); 1114 if (nc != null) { 1115 result.put(network, nc); 1116 } 1117 } 1118 } 1119 } 1120 } 1121 } 1122 1123 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1124 out = result.values().toArray(out); 1125 return out; 1126 } 1127 1128 @Override 1129 public boolean isNetworkSupported(int networkType) { 1130 enforceAccessPermission(); 1131 return mLegacyTypeTracker.isTypeSupported(networkType); 1132 } 1133 1134 /** 1135 * Return LinkProperties for the active (i.e., connected) default 1136 * network interface. It is assumed that at most one default network 1137 * is active at a time. If more than one is active, it is indeterminate 1138 * which will be returned. 1139 * @return the ip properties for the active network, or {@code null} if 1140 * none is active 1141 */ 1142 @Override 1143 public LinkProperties getActiveLinkProperties() { 1144 enforceAccessPermission(); 1145 final int uid = Binder.getCallingUid(); 1146 NetworkState state = getUnfilteredActiveNetworkState(uid); 1147 return state.linkProperties; 1148 } 1149 1150 @Override 1151 public LinkProperties getLinkPropertiesForType(int networkType) { 1152 enforceAccessPermission(); 1153 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1154 if (nai != null) { 1155 synchronized (nai) { 1156 return new LinkProperties(nai.linkProperties); 1157 } 1158 } 1159 return null; 1160 } 1161 1162 // TODO - this should be ALL networks 1163 @Override 1164 public LinkProperties getLinkProperties(Network network) { 1165 enforceAccessPermission(); 1166 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1167 if (nai != null) { 1168 synchronized (nai) { 1169 return new LinkProperties(nai.linkProperties); 1170 } 1171 } 1172 return null; 1173 } 1174 1175 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1176 if (nai != null) { 1177 synchronized (nai) { 1178 if (nai.networkCapabilities != null) { 1179 return new NetworkCapabilities(nai.networkCapabilities); 1180 } 1181 } 1182 } 1183 return null; 1184 } 1185 1186 @Override 1187 public NetworkCapabilities getNetworkCapabilities(Network network) { 1188 enforceAccessPermission(); 1189 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1190 } 1191 1192 @Override 1193 public NetworkState[] getAllNetworkState() { 1194 // Require internal since we're handing out IMSI details 1195 enforceConnectivityInternalPermission(); 1196 1197 final ArrayList<NetworkState> result = Lists.newArrayList(); 1198 for (Network network : getAllNetworks()) { 1199 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1200 if (nai != null) { 1201 synchronized (nai) { 1202 final String subscriberId = (nai.networkMisc != null) 1203 ? nai.networkMisc.subscriberId : null; 1204 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1205 nai.networkCapabilities, network, subscriberId, null)); 1206 } 1207 } 1208 } 1209 return result.toArray(new NetworkState[result.size()]); 1210 } 1211 1212 @Override 1213 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1214 enforceAccessPermission(); 1215 final int uid = Binder.getCallingUid(); 1216 final long token = Binder.clearCallingIdentity(); 1217 try { 1218 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1219 if (state.networkInfo != null) { 1220 try { 1221 return mPolicyManager.getNetworkQuotaInfo(state); 1222 } catch (RemoteException e) { 1223 } 1224 } 1225 return null; 1226 } finally { 1227 Binder.restoreCallingIdentity(token); 1228 } 1229 } 1230 1231 @Override 1232 public boolean isActiveNetworkMetered() { 1233 enforceAccessPermission(); 1234 final int uid = Binder.getCallingUid(); 1235 final long token = Binder.clearCallingIdentity(); 1236 try { 1237 return isActiveNetworkMeteredUnchecked(uid); 1238 } finally { 1239 Binder.restoreCallingIdentity(token); 1240 } 1241 } 1242 1243 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1244 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1245 if (state.networkInfo != null) { 1246 try { 1247 return mPolicyManager.isNetworkMetered(state); 1248 } catch (RemoteException e) { 1249 } 1250 } 1251 return false; 1252 } 1253 1254 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1255 @Override 1256 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1257 int deviceType = Integer.parseInt(label); 1258 sendDataActivityBroadcast(deviceType, active, tsNanos); 1259 } 1260 }; 1261 1262 /** 1263 * Ensure that a network route exists to deliver traffic to the specified 1264 * host via the specified network interface. 1265 * @param networkType the type of the network over which traffic to the 1266 * specified host is to be routed 1267 * @param hostAddress the IP address of the host to which the route is 1268 * desired 1269 * @return {@code true} on success, {@code false} on failure 1270 */ 1271 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1272 enforceChangePermission(); 1273 if (mProtectedNetworks.contains(networkType)) { 1274 enforceConnectivityInternalPermission(); 1275 } 1276 1277 InetAddress addr; 1278 try { 1279 addr = InetAddress.getByAddress(hostAddress); 1280 } catch (UnknownHostException e) { 1281 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1282 return false; 1283 } 1284 1285 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1286 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1287 return false; 1288 } 1289 1290 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1291 if (nai == null) { 1292 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1293 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1294 } else { 1295 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1296 } 1297 return false; 1298 } 1299 1300 DetailedState netState; 1301 synchronized (nai) { 1302 netState = nai.networkInfo.getDetailedState(); 1303 } 1304 1305 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1306 if (VDBG) { 1307 log("requestRouteToHostAddress on down network " 1308 + "(" + networkType + ") - dropped" 1309 + " netState=" + netState); 1310 } 1311 return false; 1312 } 1313 1314 final int uid = Binder.getCallingUid(); 1315 final long token = Binder.clearCallingIdentity(); 1316 try { 1317 LinkProperties lp; 1318 int netId; 1319 synchronized (nai) { 1320 lp = nai.linkProperties; 1321 netId = nai.network.netId; 1322 } 1323 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1324 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1325 return ok; 1326 } finally { 1327 Binder.restoreCallingIdentity(token); 1328 } 1329 } 1330 1331 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1332 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1333 if (bestRoute == null) { 1334 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1335 } else { 1336 String iface = bestRoute.getInterface(); 1337 if (bestRoute.getGateway().equals(addr)) { 1338 // if there is no better route, add the implied hostroute for our gateway 1339 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1340 } else { 1341 // if we will connect to this through another route, add a direct route 1342 // to it's gateway 1343 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1344 } 1345 } 1346 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1347 try { 1348 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1349 } catch (Exception e) { 1350 // never crash - catch them all 1351 if (DBG) loge("Exception trying to add a route: " + e); 1352 return false; 1353 } 1354 return true; 1355 } 1356 1357 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1358 @Override 1359 public void onUidRulesChanged(int uid, int uidRules) { 1360 // caller is NPMS, since we only register with them 1361 if (LOGD_RULES) { 1362 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1363 } 1364 1365 synchronized (mRulesLock) { 1366 // skip update when we've already applied rules 1367 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1368 if (oldRules == uidRules) return; 1369 1370 mUidRules.put(uid, uidRules); 1371 } 1372 1373 // TODO: notify UID when it has requested targeted updates 1374 } 1375 1376 @Override 1377 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1378 // caller is NPMS, since we only register with them 1379 if (LOGD_RULES) { 1380 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1381 } 1382 1383 synchronized (mRulesLock) { 1384 mMeteredIfaces.clear(); 1385 for (String iface : meteredIfaces) { 1386 mMeteredIfaces.add(iface); 1387 } 1388 } 1389 } 1390 1391 @Override 1392 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1393 // caller is NPMS, since we only register with them 1394 if (LOGD_RULES) { 1395 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1396 } 1397 } 1398 }; 1399 1400 /** 1401 * Require that the caller is either in the same user or has appropriate permission to interact 1402 * across users. 1403 * 1404 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1405 */ 1406 private void enforceCrossUserPermission(int userId) { 1407 if (userId == UserHandle.getCallingUserId()) { 1408 // Not a cross-user call. 1409 return; 1410 } 1411 mContext.enforceCallingOrSelfPermission( 1412 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1413 "ConnectivityService"); 1414 } 1415 1416 private void enforceInternetPermission() { 1417 mContext.enforceCallingOrSelfPermission( 1418 android.Manifest.permission.INTERNET, 1419 "ConnectivityService"); 1420 } 1421 1422 private void enforceAccessPermission() { 1423 mContext.enforceCallingOrSelfPermission( 1424 android.Manifest.permission.ACCESS_NETWORK_STATE, 1425 "ConnectivityService"); 1426 } 1427 1428 private void enforceChangePermission() { 1429 mContext.enforceCallingOrSelfPermission( 1430 android.Manifest.permission.CHANGE_NETWORK_STATE, 1431 "ConnectivityService"); 1432 } 1433 1434 private void enforceTetherAccessPermission() { 1435 mContext.enforceCallingOrSelfPermission( 1436 android.Manifest.permission.ACCESS_NETWORK_STATE, 1437 "ConnectivityService"); 1438 } 1439 1440 private void enforceConnectivityInternalPermission() { 1441 mContext.enforceCallingOrSelfPermission( 1442 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1443 "ConnectivityService"); 1444 } 1445 1446 public void sendConnectedBroadcast(NetworkInfo info) { 1447 enforceConnectivityInternalPermission(); 1448 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1449 } 1450 1451 private void sendInetConditionBroadcast(NetworkInfo info) { 1452 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1453 } 1454 1455 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1456 if (mLockdownTracker != null) { 1457 info = mLockdownTracker.augmentNetworkInfo(info); 1458 } 1459 1460 Intent intent = new Intent(bcastType); 1461 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1462 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1463 if (info.isFailover()) { 1464 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1465 info.setFailover(false); 1466 } 1467 if (info.getReason() != null) { 1468 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1469 } 1470 if (info.getExtraInfo() != null) { 1471 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1472 info.getExtraInfo()); 1473 } 1474 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1475 return intent; 1476 } 1477 1478 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1479 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1480 } 1481 1482 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1483 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1484 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1485 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1486 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1487 final long ident = Binder.clearCallingIdentity(); 1488 try { 1489 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1490 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1491 } finally { 1492 Binder.restoreCallingIdentity(ident); 1493 } 1494 } 1495 1496 private void sendStickyBroadcast(Intent intent) { 1497 synchronized(this) { 1498 if (!mSystemReady) { 1499 mInitialBroadcast = new Intent(intent); 1500 } 1501 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1502 if (DBG) { 1503 log("sendStickyBroadcast: action=" + intent.getAction()); 1504 } 1505 1506 final long ident = Binder.clearCallingIdentity(); 1507 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1508 final IBatteryStats bs = BatteryStatsService.getService(); 1509 try { 1510 NetworkInfo ni = intent.getParcelableExtra( 1511 ConnectivityManager.EXTRA_NETWORK_INFO); 1512 bs.noteConnectivityChanged(intent.getIntExtra( 1513 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1514 ni != null ? ni.getState().toString() : "?"); 1515 } catch (RemoteException e) { 1516 } 1517 } 1518 try { 1519 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1520 } finally { 1521 Binder.restoreCallingIdentity(ident); 1522 } 1523 } 1524 } 1525 1526 void systemReady() { 1527 loadGlobalProxy(); 1528 1529 synchronized(this) { 1530 mSystemReady = true; 1531 if (mInitialBroadcast != null) { 1532 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1533 mInitialBroadcast = null; 1534 } 1535 } 1536 // load the global proxy at startup 1537 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1538 1539 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1540 // for user to unlock device. 1541 if (!updateLockdownVpn()) { 1542 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1543 mContext.registerReceiver(mUserPresentReceiver, filter); 1544 } 1545 1546 // Configure whether mobile data is always on. 1547 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1548 1549 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1550 1551 mPermissionMonitor.startMonitoring(); 1552 } 1553 1554 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1555 @Override 1556 public void onReceive(Context context, Intent intent) { 1557 // Try creating lockdown tracker, since user present usually means 1558 // unlocked keystore. 1559 if (updateLockdownVpn()) { 1560 mContext.unregisterReceiver(this); 1561 } 1562 } 1563 }; 1564 1565 /** 1566 * Setup data activity tracking for the given network. 1567 * 1568 * Every {@code setupDataActivityTracking} should be paired with a 1569 * {@link #removeDataActivityTracking} for cleanup. 1570 */ 1571 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1572 final String iface = networkAgent.linkProperties.getInterfaceName(); 1573 1574 final int timeout; 1575 int type = ConnectivityManager.TYPE_NONE; 1576 1577 if (networkAgent.networkCapabilities.hasTransport( 1578 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1579 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1580 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1581 5); 1582 type = ConnectivityManager.TYPE_MOBILE; 1583 } else if (networkAgent.networkCapabilities.hasTransport( 1584 NetworkCapabilities.TRANSPORT_WIFI)) { 1585 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1586 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1587 15); 1588 type = ConnectivityManager.TYPE_WIFI; 1589 } else { 1590 // do not track any other networks 1591 timeout = 0; 1592 } 1593 1594 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1595 try { 1596 mNetd.addIdleTimer(iface, timeout, type); 1597 } catch (Exception e) { 1598 // You shall not crash! 1599 loge("Exception in setupDataActivityTracking " + e); 1600 } 1601 } 1602 } 1603 1604 /** 1605 * Remove data activity tracking when network disconnects. 1606 */ 1607 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1608 final String iface = networkAgent.linkProperties.getInterfaceName(); 1609 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1610 1611 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1612 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1613 try { 1614 // the call fails silently if no idletimer setup for this interface 1615 mNetd.removeIdleTimer(iface); 1616 } catch (Exception e) { 1617 loge("Exception in removeDataActivityTracking " + e); 1618 } 1619 } 1620 } 1621 1622 /** 1623 * Reads the network specific MTU size from reources. 1624 * and set it on it's iface. 1625 */ 1626 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1627 final String iface = newLp.getInterfaceName(); 1628 final int mtu = newLp.getMtu(); 1629 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1630 if (VDBG) log("identical MTU - not setting"); 1631 return; 1632 } 1633 1634 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1635 loge("Unexpected mtu value: " + mtu + ", " + iface); 1636 return; 1637 } 1638 1639 // Cannot set MTU without interface name 1640 if (TextUtils.isEmpty(iface)) { 1641 loge("Setting MTU size with null iface."); 1642 return; 1643 } 1644 1645 try { 1646 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1647 mNetd.setMtu(iface, mtu); 1648 } catch (Exception e) { 1649 Slog.e(TAG, "exception in setMtu()" + e); 1650 } 1651 } 1652 1653 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1654 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1655 1656 // Overridden for testing purposes to avoid writing to SystemProperties. 1657 @VisibleForTesting 1658 protected int getDefaultTcpRwnd() { 1659 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1660 } 1661 1662 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1663 if (isDefaultNetwork(nai) == false) { 1664 return; 1665 } 1666 1667 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1668 String[] values = null; 1669 if (tcpBufferSizes != null) { 1670 values = tcpBufferSizes.split(","); 1671 } 1672 1673 if (values == null || values.length != 6) { 1674 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1675 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1676 values = tcpBufferSizes.split(","); 1677 } 1678 1679 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1680 1681 try { 1682 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1683 1684 final String prefix = "/sys/kernel/ipv4/tcp_"; 1685 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1686 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1687 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1688 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1689 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1690 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1691 mCurrentTcpBufferSizes = tcpBufferSizes; 1692 } catch (IOException e) { 1693 loge("Can't set TCP buffer sizes:" + e); 1694 } 1695 1696 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1697 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1698 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1699 if (rwndValue != 0) { 1700 SystemProperties.set(sysctlKey, rwndValue.toString()); 1701 } 1702 } 1703 1704 private void flushVmDnsCache() { 1705 /* 1706 * Tell the VMs to toss their DNS caches 1707 */ 1708 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1709 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1710 /* 1711 * Connectivity events can happen before boot has completed ... 1712 */ 1713 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1714 final long ident = Binder.clearCallingIdentity(); 1715 try { 1716 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1717 } finally { 1718 Binder.restoreCallingIdentity(ident); 1719 } 1720 } 1721 1722 @Override 1723 public int getRestoreDefaultNetworkDelay(int networkType) { 1724 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1725 NETWORK_RESTORE_DELAY_PROP_NAME); 1726 if(restoreDefaultNetworkDelayStr != null && 1727 restoreDefaultNetworkDelayStr.length() != 0) { 1728 try { 1729 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1730 } catch (NumberFormatException e) { 1731 } 1732 } 1733 // if the system property isn't set, use the value for the apn type 1734 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1735 1736 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1737 (mNetConfigs[networkType] != null)) { 1738 ret = mNetConfigs[networkType].restoreTime; 1739 } 1740 return ret; 1741 } 1742 1743 private boolean argsContain(String[] args, String target) { 1744 for (String arg : args) { 1745 if (arg.equals(target)) return true; 1746 } 1747 return false; 1748 } 1749 1750 @Override 1751 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1752 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1753 if (mContext.checkCallingOrSelfPermission( 1754 android.Manifest.permission.DUMP) 1755 != PackageManager.PERMISSION_GRANTED) { 1756 pw.println("Permission Denial: can't dump ConnectivityService " + 1757 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1758 Binder.getCallingUid()); 1759 return; 1760 } 1761 1762 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1763 if (argsContain(args, "--diag")) { 1764 final long DIAG_TIME_MS = 5000; 1765 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1766 // Start gathering diagnostic information. 1767 netDiags.add(new NetworkDiagnostics( 1768 nai.network, 1769 new LinkProperties(nai.linkProperties), 1770 DIAG_TIME_MS)); 1771 } 1772 1773 for (NetworkDiagnostics netDiag : netDiags) { 1774 pw.println(); 1775 netDiag.waitForMeasurements(); 1776 netDiag.dump(pw); 1777 } 1778 1779 return; 1780 } 1781 1782 pw.print("NetworkFactories for:"); 1783 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1784 pw.print(" " + nfi.name); 1785 } 1786 pw.println(); 1787 pw.println(); 1788 1789 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 1790 pw.print("Active default network: "); 1791 if (defaultNai == null) { 1792 pw.println("none"); 1793 } else { 1794 pw.println(defaultNai.network.netId); 1795 } 1796 pw.println(); 1797 1798 pw.println("Current Networks:"); 1799 pw.increaseIndent(); 1800 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1801 pw.println(nai.toString()); 1802 pw.increaseIndent(); 1803 pw.println("Requests:"); 1804 pw.increaseIndent(); 1805 for (int i = 0; i < nai.networkRequests.size(); i++) { 1806 pw.println(nai.networkRequests.valueAt(i).toString()); 1807 } 1808 pw.decreaseIndent(); 1809 pw.println("Lingered:"); 1810 pw.increaseIndent(); 1811 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1812 pw.decreaseIndent(); 1813 pw.decreaseIndent(); 1814 } 1815 pw.decreaseIndent(); 1816 pw.println(); 1817 1818 pw.println("Network Requests:"); 1819 pw.increaseIndent(); 1820 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1821 pw.println(nri.toString()); 1822 } 1823 pw.println(); 1824 pw.decreaseIndent(); 1825 1826 mLegacyTypeTracker.dump(pw); 1827 1828 synchronized (this) { 1829 pw.print("mNetTransitionWakeLock: currently " + 1830 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1831 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1832 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1833 } else { 1834 pw.println(", last requested never"); 1835 } 1836 } 1837 pw.println(); 1838 1839 mTethering.dump(fd, pw, args); 1840 1841 if (mInetLog != null && mInetLog.size() > 0) { 1842 pw.println(); 1843 pw.println("Inet condition reports:"); 1844 pw.increaseIndent(); 1845 for(int i = 0; i < mInetLog.size(); i++) { 1846 pw.println(mInetLog.get(i)); 1847 } 1848 pw.decreaseIndent(); 1849 } 1850 1851 if (argsContain(args, "--short") == false) { 1852 pw.println(); 1853 synchronized (mValidationLogs) { 1854 pw.println("mValidationLogs (most recent first):"); 1855 for (Pair<Network,ReadOnlyLocalLog> p : mValidationLogs) { 1856 pw.println(p.first); 1857 pw.increaseIndent(); 1858 p.second.dump(fd, pw, args); 1859 pw.decreaseIndent(); 1860 } 1861 } 1862 } 1863 } 1864 1865 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1866 if (nai.network == null) return false; 1867 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1868 if (officialNai != null && officialNai.equals(nai)) return true; 1869 if (officialNai != null || VDBG) { 1870 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1871 " - " + nai); 1872 } 1873 return false; 1874 } 1875 1876 private boolean isRequest(NetworkRequest request) { 1877 return mNetworkRequests.get(request).isRequest; 1878 } 1879 1880 // must be stateless - things change under us. 1881 private class NetworkStateTrackerHandler extends Handler { 1882 public NetworkStateTrackerHandler(Looper looper) { 1883 super(looper); 1884 } 1885 1886 @Override 1887 public void handleMessage(Message msg) { 1888 NetworkInfo info; 1889 switch (msg.what) { 1890 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1891 handleAsyncChannelHalfConnect(msg); 1892 break; 1893 } 1894 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1895 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1896 if (nai != null) nai.asyncChannel.disconnect(); 1897 break; 1898 } 1899 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1900 handleAsyncChannelDisconnected(msg); 1901 break; 1902 } 1903 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1904 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1905 if (nai == null) { 1906 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1907 } else { 1908 final NetworkCapabilities networkCapabilities = 1909 (NetworkCapabilities)msg.obj; 1910 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL) || 1911 networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 1912 Slog.wtf(TAG, "BUG: " + nai + " has stateful capability."); 1913 } 1914 updateCapabilities(nai, networkCapabilities); 1915 } 1916 break; 1917 } 1918 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1919 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1920 if (nai == null) { 1921 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1922 } else { 1923 if (VDBG) { 1924 log("Update of LinkProperties for " + nai.name() + 1925 "; created=" + nai.created); 1926 } 1927 LinkProperties oldLp = nai.linkProperties; 1928 synchronized (nai) { 1929 nai.linkProperties = (LinkProperties)msg.obj; 1930 } 1931 if (nai.created) updateLinkProperties(nai, oldLp); 1932 } 1933 break; 1934 } 1935 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1936 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1937 if (nai == null) { 1938 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1939 break; 1940 } 1941 info = (NetworkInfo) msg.obj; 1942 updateNetworkInfo(nai, info); 1943 break; 1944 } 1945 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1946 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1947 if (nai == null) { 1948 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1949 break; 1950 } 1951 Integer score = (Integer) msg.obj; 1952 if (score != null) updateNetworkScore(nai, score.intValue()); 1953 break; 1954 } 1955 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1956 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1957 if (nai == null) { 1958 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1959 break; 1960 } 1961 try { 1962 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1963 } catch (Exception e) { 1964 // Never crash! 1965 loge("Exception in addVpnUidRanges: " + e); 1966 } 1967 break; 1968 } 1969 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1970 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1971 if (nai == null) { 1972 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1973 break; 1974 } 1975 try { 1976 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1977 } catch (Exception e) { 1978 // Never crash! 1979 loge("Exception in removeVpnUidRanges: " + e); 1980 } 1981 break; 1982 } 1983 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1984 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1985 if (nai == null) { 1986 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1987 break; 1988 } 1989 if (nai.created && !nai.networkMisc.explicitlySelected) { 1990 loge("ERROR: created network explicitly selected."); 1991 } 1992 nai.networkMisc.explicitlySelected = true; 1993 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 1994 break; 1995 } 1996 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1997 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1998 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_TESTED")) { 1999 final boolean valid = 2000 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2001 if (DBG) log(nai.name() + " validation " + (valid ? " passed" : "failed")); 2002 if (valid != nai.lastValidated) { 2003 final int oldScore = nai.getCurrentScore(); 2004 nai.lastValidated = valid; 2005 nai.everValidated |= valid; 2006 updateCapabilities(nai, nai.networkCapabilities); 2007 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2008 if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); 2009 } 2010 updateInetCondition(nai); 2011 // Let the NetworkAgent know the state of its network 2012 nai.asyncChannel.sendMessage( 2013 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2014 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2015 0, null); 2016 } 2017 break; 2018 } 2019 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2020 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2021 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 2022 handleLingerComplete(nai); 2023 } 2024 break; 2025 } 2026 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2027 final int netId = msg.arg2; 2028 final boolean visible = (msg.arg1 != 0); 2029 final NetworkAgentInfo nai; 2030 synchronized (mNetworkForNetId) { 2031 nai = mNetworkForNetId.get(netId); 2032 } 2033 // If captive portal status has changed, update capabilities. 2034 if (nai != null && (visible != nai.lastCaptivePortalDetected)) { 2035 nai.lastCaptivePortalDetected = visible; 2036 nai.everCaptivePortalDetected |= visible; 2037 updateCapabilities(nai, nai.networkCapabilities); 2038 } 2039 if (!visible) { 2040 setProvNotificationVisibleIntent(false, netId, null, 0, null, null, false); 2041 } else { 2042 if (nai == null) { 2043 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2044 break; 2045 } 2046 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2047 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), 2048 (PendingIntent)msg.obj, nai.networkMisc.explicitlySelected); 2049 } 2050 break; 2051 } 2052 } 2053 } 2054 } 2055 2056 private void linger(NetworkAgentInfo nai) { 2057 nai.lingering = true; 2058 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 2059 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 2060 } 2061 2062 // Cancel any lingering so the linger timeout doesn't teardown a network. 2063 // This should be called when a network begins satisfying a NetworkRequest. 2064 // Note: depending on what state the NetworkMonitor is in (e.g., 2065 // if it's awaiting captive portal login, or if validation failed), this 2066 // may trigger a re-evaluation of the network. 2067 private void unlinger(NetworkAgentInfo nai) { 2068 nai.networkLingered.clear(); 2069 if (!nai.lingering) return; 2070 nai.lingering = false; 2071 if (VDBG) log("Canceling linger of " + nai.name()); 2072 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2073 } 2074 2075 private void handleAsyncChannelHalfConnect(Message msg) { 2076 AsyncChannel ac = (AsyncChannel) msg.obj; 2077 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2078 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2079 if (VDBG) log("NetworkFactory connected"); 2080 // A network factory has connected. Send it all current NetworkRequests. 2081 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2082 if (nri.isRequest == false) continue; 2083 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2084 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2085 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2086 } 2087 } else { 2088 loge("Error connecting NetworkFactory"); 2089 mNetworkFactoryInfos.remove(msg.obj); 2090 } 2091 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2092 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2093 if (VDBG) log("NetworkAgent connected"); 2094 // A network agent has requested a connection. Establish the connection. 2095 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2096 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2097 } else { 2098 loge("Error connecting NetworkAgent"); 2099 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2100 if (nai != null) { 2101 final boolean wasDefault = isDefaultNetwork(nai); 2102 synchronized (mNetworkForNetId) { 2103 mNetworkForNetId.remove(nai.network.netId); 2104 mNetIdInUse.delete(nai.network.netId); 2105 } 2106 // Just in case. 2107 mLegacyTypeTracker.remove(nai, wasDefault); 2108 } 2109 } 2110 } 2111 } 2112 2113 private void handleAsyncChannelDisconnected(Message msg) { 2114 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2115 if (nai != null) { 2116 if (DBG) { 2117 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2118 } 2119 // A network agent has disconnected. 2120 // TODO - if we move the logic to the network agent (have them disconnect 2121 // because they lost all their requests or because their score isn't good) 2122 // then they would disconnect organically, report their new state and then 2123 // disconnect the channel. 2124 if (nai.networkInfo.isConnected()) { 2125 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2126 null, null); 2127 } 2128 final boolean wasDefault = isDefaultNetwork(nai); 2129 if (wasDefault) { 2130 mDefaultInetConditionPublished = 0; 2131 } 2132 notifyIfacesChanged(); 2133 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2134 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2135 mNetworkAgentInfos.remove(msg.replyTo); 2136 updateClat(null, nai.linkProperties, nai); 2137 synchronized (mNetworkForNetId) { 2138 // Remove the NetworkAgent, but don't mark the netId as 2139 // available until we've told netd to delete it below. 2140 mNetworkForNetId.remove(nai.network.netId); 2141 } 2142 // Remove all previously satisfied requests. 2143 for (int i = 0; i < nai.networkRequests.size(); i++) { 2144 NetworkRequest request = nai.networkRequests.valueAt(i); 2145 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2146 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2147 mNetworkForRequestId.remove(request.requestId); 2148 sendUpdatedScoreToFactories(request, 0); 2149 } 2150 } 2151 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2152 removeDataActivityTracking(nai); 2153 notifyLockdownVpn(nai); 2154 requestNetworkTransitionWakelock(nai.name()); 2155 } 2156 mLegacyTypeTracker.remove(nai, wasDefault); 2157 rematchAllNetworksAndRequests(null, 0); 2158 if (nai.created) { 2159 // Tell netd to clean up the configuration for this network 2160 // (routing rules, DNS, etc). 2161 // This may be slow as it requires a lot of netd shelling out to ip and 2162 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2163 // after we've rematched networks with requests which should make a potential 2164 // fallback network the default or requested a new network from the 2165 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2166 // long time. 2167 try { 2168 mNetd.removeNetwork(nai.network.netId); 2169 } catch (Exception e) { 2170 loge("Exception removing network: " + e); 2171 } 2172 } 2173 synchronized (mNetworkForNetId) { 2174 mNetIdInUse.delete(nai.network.netId); 2175 } 2176 } else { 2177 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2178 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2179 } 2180 } 2181 2182 // If this method proves to be too slow then we can maintain a separate 2183 // pendingIntent => NetworkRequestInfo map. 2184 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2185 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2186 Intent intent = pendingIntent.getIntent(); 2187 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2188 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2189 if (existingPendingIntent != null && 2190 existingPendingIntent.getIntent().filterEquals(intent)) { 2191 return entry.getValue(); 2192 } 2193 } 2194 return null; 2195 } 2196 2197 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2198 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2199 2200 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2201 if (existingRequest != null) { // remove the existing request. 2202 if (DBG) log("Replacing " + existingRequest.request + " with " 2203 + nri.request + " because their intents matched."); 2204 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2205 } 2206 handleRegisterNetworkRequest(nri); 2207 } 2208 2209 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2210 mNetworkRequests.put(nri.request, nri); 2211 rematchAllNetworksAndRequests(null, 0); 2212 if (nri.isRequest && mNetworkForRequestId.get(nri.request.requestId) == null) { 2213 sendUpdatedScoreToFactories(nri.request, 0); 2214 } 2215 } 2216 2217 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2218 int callingUid) { 2219 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2220 if (nri != null) { 2221 handleReleaseNetworkRequest(nri.request, callingUid); 2222 } 2223 } 2224 2225 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2226 // This is whether it is satisfying any NetworkRequests or were it to become validated, 2227 // would it have a chance of satisfying any NetworkRequests. 2228 private boolean unneeded(NetworkAgentInfo nai) { 2229 if (!nai.created || nai.isVPN() || nai.lingering) return false; 2230 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2231 // If this Network is already the highest scoring Network for a request, or if 2232 // there is hope for it to become one if it validated, then it is needed. 2233 if (nri.isRequest && nai.satisfies(nri.request) && 2234 (nai.networkRequests.get(nri.request.requestId) != null || 2235 // Note that this catches two important cases: 2236 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2237 // is currently satisfying the request. This is desirable when 2238 // cellular ends up validating but WiFi does not. 2239 // 2. Unvalidated WiFi will not be reaped when validated cellular 2240 // is currently satsifying the request. This is desirable when 2241 // WiFi ends up validating and out scoring cellular. 2242 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2243 nai.getCurrentScoreAsValidated())) { 2244 return false; 2245 } 2246 } 2247 return true; 2248 } 2249 2250 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2251 NetworkRequestInfo nri = mNetworkRequests.get(request); 2252 if (nri != null) { 2253 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2254 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2255 return; 2256 } 2257 if (DBG) log("releasing NetworkRequest " + request); 2258 nri.unlinkDeathRecipient(); 2259 mNetworkRequests.remove(request); 2260 if (nri.isRequest) { 2261 // Find all networks that are satisfying this request and remove the request 2262 // from their request lists. 2263 // TODO - it's my understanding that for a request there is only a single 2264 // network satisfying it, so this loop is wasteful 2265 boolean wasKept = false; 2266 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2267 if (nai.networkRequests.get(nri.request.requestId) != null) { 2268 nai.networkRequests.remove(nri.request.requestId); 2269 if (DBG) { 2270 log(" Removing from current network " + nai.name() + 2271 ", leaving " + nai.networkRequests.size() + 2272 " requests."); 2273 } 2274 if (unneeded(nai)) { 2275 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2276 teardownUnneededNetwork(nai); 2277 } else { 2278 // suspect there should only be one pass through here 2279 // but if any were kept do the check below 2280 wasKept |= true; 2281 } 2282 } 2283 } 2284 2285 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2286 if (nai != null) { 2287 mNetworkForRequestId.remove(nri.request.requestId); 2288 } 2289 // Maintain the illusion. When this request arrived, we might have pretended 2290 // that a network connected to serve it, even though the network was already 2291 // connected. Now that this request has gone away, we might have to pretend 2292 // that the network disconnected. LegacyTypeTracker will generate that 2293 // phantom disconnect for this type. 2294 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2295 boolean doRemove = true; 2296 if (wasKept) { 2297 // check if any of the remaining requests for this network are for the 2298 // same legacy type - if so, don't remove the nai 2299 for (int i = 0; i < nai.networkRequests.size(); i++) { 2300 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2301 if (otherRequest.legacyType == nri.request.legacyType && 2302 isRequest(otherRequest)) { 2303 if (DBG) log(" still have other legacy request - leaving"); 2304 doRemove = false; 2305 } 2306 } 2307 } 2308 2309 if (doRemove) { 2310 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2311 } 2312 } 2313 2314 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2315 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2316 nri.request); 2317 } 2318 } else { 2319 // listens don't have a singular affectedNetwork. Check all networks to see 2320 // if this listen request applies and remove it. 2321 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2322 nai.networkRequests.remove(nri.request.requestId); 2323 } 2324 } 2325 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2326 } 2327 } 2328 2329 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2330 enforceConnectivityInternalPermission(); 2331 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2332 accept ? 1 : 0, always ? 1: 0, network)); 2333 } 2334 2335 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2336 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2337 " accept=" + accept + " always=" + always); 2338 2339 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2340 if (nai == null) { 2341 // Nothing to do. 2342 return; 2343 } 2344 2345 if (nai.everValidated) { 2346 // The network validated while the dialog box was up. Take no action. 2347 return; 2348 } 2349 2350 if (!nai.networkMisc.explicitlySelected) { 2351 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2352 } 2353 2354 if (accept != nai.networkMisc.acceptUnvalidated) { 2355 int oldScore = nai.getCurrentScore(); 2356 nai.networkMisc.acceptUnvalidated = accept; 2357 rematchAllNetworksAndRequests(nai, oldScore); 2358 sendUpdatedScoreToFactories(nai); 2359 } 2360 2361 if (always) { 2362 nai.asyncChannel.sendMessage( 2363 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2364 } 2365 2366 if (!accept) { 2367 // Tell the NetworkAgent that the network does not have Internet access (because that's 2368 // what we just told the user). This will hint to Wi-Fi not to autojoin this network in 2369 // the future. We do this now because NetworkMonitor might not yet have finished 2370 // validating and thus we might not yet have received an EVENT_NETWORK_TESTED. 2371 nai.asyncChannel.sendMessage(NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2372 NetworkAgent.INVALID_NETWORK, 0, null); 2373 // TODO: Tear the network down once we have determined how to tell WifiStateMachine not 2374 // to reconnect to it immediately. http://b/20739299 2375 } 2376 2377 } 2378 2379 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2380 if (DBG) log("scheduleUnvalidatedPrompt " + nai.network); 2381 mHandler.sendMessageDelayed( 2382 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2383 PROMPT_UNVALIDATED_DELAY_MS); 2384 } 2385 2386 private void handlePromptUnvalidated(Network network) { 2387 if (DBG) log("handlePromptUnvalidated " + network); 2388 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2389 2390 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2391 // we haven't already been told to switch to it regardless of whether it validated or not. 2392 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2393 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2394 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2395 return; 2396 } 2397 2398 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2399 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2400 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2401 intent.setClassName("com.android.settings", 2402 "com.android.settings.wifi.WifiNoInternetDialog"); 2403 2404 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2405 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2406 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2407 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent, true); 2408 } 2409 2410 private class InternalHandler extends Handler { 2411 public InternalHandler(Looper looper) { 2412 super(looper); 2413 } 2414 2415 @Override 2416 public void handleMessage(Message msg) { 2417 switch (msg.what) { 2418 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2419 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2420 String causedBy = null; 2421 synchronized (ConnectivityService.this) { 2422 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2423 mNetTransitionWakeLock.isHeld()) { 2424 mNetTransitionWakeLock.release(); 2425 causedBy = mNetTransitionWakeLockCausedBy; 2426 } else { 2427 break; 2428 } 2429 } 2430 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2431 log("Failed to find a new network - expiring NetTransition Wakelock"); 2432 } else { 2433 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2434 " cleared because we found a replacement network"); 2435 } 2436 break; 2437 } 2438 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2439 handleDeprecatedGlobalHttpProxy(); 2440 break; 2441 } 2442 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2443 Intent intent = (Intent)msg.obj; 2444 sendStickyBroadcast(intent); 2445 break; 2446 } 2447 case EVENT_PROXY_HAS_CHANGED: { 2448 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2449 break; 2450 } 2451 case EVENT_REGISTER_NETWORK_FACTORY: { 2452 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2453 break; 2454 } 2455 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2456 handleUnregisterNetworkFactory((Messenger)msg.obj); 2457 break; 2458 } 2459 case EVENT_REGISTER_NETWORK_AGENT: { 2460 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2461 break; 2462 } 2463 case EVENT_REGISTER_NETWORK_REQUEST: 2464 case EVENT_REGISTER_NETWORK_LISTENER: { 2465 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2466 break; 2467 } 2468 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2469 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2470 handleRegisterNetworkRequestWithIntent(msg); 2471 break; 2472 } 2473 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2474 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2475 break; 2476 } 2477 case EVENT_RELEASE_NETWORK_REQUEST: { 2478 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2479 break; 2480 } 2481 case EVENT_SET_ACCEPT_UNVALIDATED: { 2482 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2483 break; 2484 } 2485 case EVENT_PROMPT_UNVALIDATED: { 2486 handlePromptUnvalidated((Network) msg.obj); 2487 break; 2488 } 2489 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2490 handleMobileDataAlwaysOn(); 2491 break; 2492 } 2493 case EVENT_SYSTEM_READY: { 2494 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2495 nai.networkMonitor.systemReady = true; 2496 } 2497 break; 2498 } 2499 } 2500 } 2501 } 2502 2503 // javadoc from interface 2504 public int tether(String iface) { 2505 ConnectivityManager.enforceTetherChangePermission(mContext); 2506 if (isTetheringSupported()) { 2507 return mTethering.tether(iface); 2508 } else { 2509 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2510 } 2511 } 2512 2513 // javadoc from interface 2514 public int untether(String iface) { 2515 ConnectivityManager.enforceTetherChangePermission(mContext); 2516 2517 if (isTetheringSupported()) { 2518 return mTethering.untether(iface); 2519 } else { 2520 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2521 } 2522 } 2523 2524 // javadoc from interface 2525 public int getLastTetherError(String iface) { 2526 enforceTetherAccessPermission(); 2527 2528 if (isTetheringSupported()) { 2529 return mTethering.getLastTetherError(iface); 2530 } else { 2531 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2532 } 2533 } 2534 2535 // TODO - proper iface API for selection by property, inspection, etc 2536 public String[] getTetherableUsbRegexs() { 2537 enforceTetherAccessPermission(); 2538 if (isTetheringSupported()) { 2539 return mTethering.getTetherableUsbRegexs(); 2540 } else { 2541 return new String[0]; 2542 } 2543 } 2544 2545 public String[] getTetherableWifiRegexs() { 2546 enforceTetherAccessPermission(); 2547 if (isTetheringSupported()) { 2548 return mTethering.getTetherableWifiRegexs(); 2549 } else { 2550 return new String[0]; 2551 } 2552 } 2553 2554 public String[] getTetherableBluetoothRegexs() { 2555 enforceTetherAccessPermission(); 2556 if (isTetheringSupported()) { 2557 return mTethering.getTetherableBluetoothRegexs(); 2558 } else { 2559 return new String[0]; 2560 } 2561 } 2562 2563 public int setUsbTethering(boolean enable) { 2564 ConnectivityManager.enforceTetherChangePermission(mContext); 2565 if (isTetheringSupported()) { 2566 return mTethering.setUsbTethering(enable); 2567 } else { 2568 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2569 } 2570 } 2571 2572 // TODO - move iface listing, queries, etc to new module 2573 // javadoc from interface 2574 public String[] getTetherableIfaces() { 2575 enforceTetherAccessPermission(); 2576 return mTethering.getTetherableIfaces(); 2577 } 2578 2579 public String[] getTetheredIfaces() { 2580 enforceTetherAccessPermission(); 2581 return mTethering.getTetheredIfaces(); 2582 } 2583 2584 public String[] getTetheringErroredIfaces() { 2585 enforceTetherAccessPermission(); 2586 return mTethering.getErroredIfaces(); 2587 } 2588 2589 public String[] getTetheredDhcpRanges() { 2590 enforceConnectivityInternalPermission(); 2591 return mTethering.getTetheredDhcpRanges(); 2592 } 2593 2594 // if ro.tether.denied = true we default to no tethering 2595 // gservices could set the secure setting to 1 though to enable it on a build where it 2596 // had previously been turned off. 2597 public boolean isTetheringSupported() { 2598 enforceTetherAccessPermission(); 2599 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2600 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2601 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2602 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2603 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2604 mTethering.getTetherableWifiRegexs().length != 0 || 2605 mTethering.getTetherableBluetoothRegexs().length != 0) && 2606 mTethering.getUpstreamIfaceTypes().length != 0); 2607 } 2608 2609 // Called when we lose the default network and have no replacement yet. 2610 // This will automatically be cleared after X seconds or a new default network 2611 // becomes CONNECTED, whichever happens first. The timer is started by the 2612 // first caller and not restarted by subsequent callers. 2613 private void requestNetworkTransitionWakelock(String forWhom) { 2614 int serialNum = 0; 2615 synchronized (this) { 2616 if (mNetTransitionWakeLock.isHeld()) return; 2617 serialNum = ++mNetTransitionWakeLockSerialNumber; 2618 mNetTransitionWakeLock.acquire(); 2619 mNetTransitionWakeLockCausedBy = forWhom; 2620 } 2621 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2622 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2623 mNetTransitionWakeLockTimeout); 2624 return; 2625 } 2626 2627 // 100 percent is full good, 0 is full bad. 2628 public void reportInetCondition(int networkType, int percentage) { 2629 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2630 if (nai == null) return; 2631 reportNetworkConnectivity(nai.network, percentage > 50); 2632 } 2633 2634 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2635 enforceAccessPermission(); 2636 enforceInternetPermission(); 2637 2638 NetworkAgentInfo nai; 2639 if (network == null) { 2640 nai = getDefaultNetwork(); 2641 } else { 2642 nai = getNetworkAgentInfoForNetwork(network); 2643 } 2644 if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || 2645 nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { 2646 return; 2647 } 2648 // Revalidate if the app report does not match our current validated state. 2649 if (hasConnectivity == nai.lastValidated) return; 2650 final int uid = Binder.getCallingUid(); 2651 if (DBG) { 2652 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2653 ") by " + uid); 2654 } 2655 synchronized (nai) { 2656 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2657 // which isn't meant to work on uncreated networks. 2658 if (!nai.created) return; 2659 2660 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2661 2662 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2663 } 2664 } 2665 2666 private ProxyInfo getDefaultProxy() { 2667 // this information is already available as a world read/writable jvm property 2668 // so this API change wouldn't have a benifit. It also breaks the passing 2669 // of proxy info to all the JVMs. 2670 // enforceAccessPermission(); 2671 synchronized (mProxyLock) { 2672 ProxyInfo ret = mGlobalProxy; 2673 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2674 return ret; 2675 } 2676 } 2677 2678 public ProxyInfo getProxyForNetwork(Network network) { 2679 if (network == null) return getDefaultProxy(); 2680 final ProxyInfo globalProxy = getGlobalProxy(); 2681 if (globalProxy != null) return globalProxy; 2682 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2683 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2684 // caller may not have. 2685 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2686 if (nai == null) return null; 2687 synchronized (nai) { 2688 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2689 if (proxyInfo == null) return null; 2690 return new ProxyInfo(proxyInfo); 2691 } 2692 } 2693 2694 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2695 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2696 // proxy is null then there is no proxy in place). 2697 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2698 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2699 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2700 proxy = null; 2701 } 2702 return proxy; 2703 } 2704 2705 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2706 // better for determining if a new proxy broadcast is necessary: 2707 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2708 // avoid unnecessary broadcasts. 2709 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2710 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2711 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2712 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2713 // all set. 2714 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2715 a = canonicalizeProxyInfo(a); 2716 b = canonicalizeProxyInfo(b); 2717 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2718 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2719 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2720 } 2721 2722 public void setGlobalProxy(ProxyInfo proxyProperties) { 2723 enforceConnectivityInternalPermission(); 2724 2725 synchronized (mProxyLock) { 2726 if (proxyProperties == mGlobalProxy) return; 2727 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2728 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2729 2730 String host = ""; 2731 int port = 0; 2732 String exclList = ""; 2733 String pacFileUrl = ""; 2734 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2735 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2736 if (!proxyProperties.isValid()) { 2737 if (DBG) 2738 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2739 return; 2740 } 2741 mGlobalProxy = new ProxyInfo(proxyProperties); 2742 host = mGlobalProxy.getHost(); 2743 port = mGlobalProxy.getPort(); 2744 exclList = mGlobalProxy.getExclusionListAsString(); 2745 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2746 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2747 } 2748 } else { 2749 mGlobalProxy = null; 2750 } 2751 ContentResolver res = mContext.getContentResolver(); 2752 final long token = Binder.clearCallingIdentity(); 2753 try { 2754 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2755 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2756 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2757 exclList); 2758 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2759 } finally { 2760 Binder.restoreCallingIdentity(token); 2761 } 2762 2763 if (mGlobalProxy == null) { 2764 proxyProperties = mDefaultProxy; 2765 } 2766 sendProxyBroadcast(proxyProperties); 2767 } 2768 } 2769 2770 private void loadGlobalProxy() { 2771 ContentResolver res = mContext.getContentResolver(); 2772 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2773 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2774 String exclList = Settings.Global.getString(res, 2775 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2776 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2777 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2778 ProxyInfo proxyProperties; 2779 if (!TextUtils.isEmpty(pacFileUrl)) { 2780 proxyProperties = new ProxyInfo(pacFileUrl); 2781 } else { 2782 proxyProperties = new ProxyInfo(host, port, exclList); 2783 } 2784 if (!proxyProperties.isValid()) { 2785 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2786 return; 2787 } 2788 2789 synchronized (mProxyLock) { 2790 mGlobalProxy = proxyProperties; 2791 } 2792 } 2793 } 2794 2795 public ProxyInfo getGlobalProxy() { 2796 // this information is already available as a world read/writable jvm property 2797 // so this API change wouldn't have a benifit. It also breaks the passing 2798 // of proxy info to all the JVMs. 2799 // enforceAccessPermission(); 2800 synchronized (mProxyLock) { 2801 return mGlobalProxy; 2802 } 2803 } 2804 2805 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2806 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2807 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2808 proxy = null; 2809 } 2810 synchronized (mProxyLock) { 2811 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2812 if (mDefaultProxy == proxy) return; // catches repeated nulls 2813 if (proxy != null && !proxy.isValid()) { 2814 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2815 return; 2816 } 2817 2818 // This call could be coming from the PacManager, containing the port of the local 2819 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2820 // global (to get the correct local port), and send a broadcast. 2821 // TODO: Switch PacManager to have its own message to send back rather than 2822 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2823 if ((mGlobalProxy != null) && (proxy != null) 2824 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2825 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2826 mGlobalProxy = proxy; 2827 sendProxyBroadcast(mGlobalProxy); 2828 return; 2829 } 2830 mDefaultProxy = proxy; 2831 2832 if (mGlobalProxy != null) return; 2833 if (!mDefaultProxyDisabled) { 2834 sendProxyBroadcast(proxy); 2835 } 2836 } 2837 } 2838 2839 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2840 // This method gets called when any network changes proxy, but the broadcast only ever contains 2841 // the default proxy (even if it hasn't changed). 2842 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2843 // world where an app might be bound to a non-default network. 2844 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2845 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2846 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2847 2848 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2849 sendProxyBroadcast(getDefaultProxy()); 2850 } 2851 } 2852 2853 private void handleDeprecatedGlobalHttpProxy() { 2854 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2855 Settings.Global.HTTP_PROXY); 2856 if (!TextUtils.isEmpty(proxy)) { 2857 String data[] = proxy.split(":"); 2858 if (data.length == 0) { 2859 return; 2860 } 2861 2862 String proxyHost = data[0]; 2863 int proxyPort = 8080; 2864 if (data.length > 1) { 2865 try { 2866 proxyPort = Integer.parseInt(data[1]); 2867 } catch (NumberFormatException e) { 2868 return; 2869 } 2870 } 2871 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2872 setGlobalProxy(p); 2873 } 2874 } 2875 2876 private void sendProxyBroadcast(ProxyInfo proxy) { 2877 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2878 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2879 if (DBG) log("sending Proxy Broadcast for " + proxy); 2880 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2881 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2882 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2883 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2884 final long ident = Binder.clearCallingIdentity(); 2885 try { 2886 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2887 } finally { 2888 Binder.restoreCallingIdentity(ident); 2889 } 2890 } 2891 2892 private static class SettingsObserver extends ContentObserver { 2893 final private HashMap<Uri, Integer> mUriEventMap; 2894 final private Context mContext; 2895 final private Handler mHandler; 2896 2897 SettingsObserver(Context context, Handler handler) { 2898 super(null); 2899 mUriEventMap = new HashMap<Uri, Integer>(); 2900 mContext = context; 2901 mHandler = handler; 2902 } 2903 2904 void observe(Uri uri, int what) { 2905 mUriEventMap.put(uri, what); 2906 final ContentResolver resolver = mContext.getContentResolver(); 2907 resolver.registerContentObserver(uri, false, this); 2908 } 2909 2910 @Override 2911 public void onChange(boolean selfChange) { 2912 Slog.wtf(TAG, "Should never be reached."); 2913 } 2914 2915 @Override 2916 public void onChange(boolean selfChange, Uri uri) { 2917 final Integer what = mUriEventMap.get(uri); 2918 if (what != null) { 2919 mHandler.obtainMessage(what.intValue()).sendToTarget(); 2920 } else { 2921 loge("No matching event to send for URI=" + uri); 2922 } 2923 } 2924 } 2925 2926 private static void log(String s) { 2927 Slog.d(TAG, s); 2928 } 2929 2930 private static void loge(String s) { 2931 Slog.e(TAG, s); 2932 } 2933 2934 private static <T> T checkNotNull(T value, String message) { 2935 if (value == null) { 2936 throw new NullPointerException(message); 2937 } 2938 return value; 2939 } 2940 2941 /** 2942 * Prepare for a VPN application. 2943 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 2944 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 2945 * 2946 * @param oldPackage Package name of the application which currently controls VPN, which will 2947 * be replaced. If there is no such application, this should should either be 2948 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 2949 * @param newPackage Package name of the application which should gain control of VPN, or 2950 * {@code null} to disable. 2951 * @param userId User for whom to prepare the new VPN. 2952 * 2953 * @hide 2954 */ 2955 @Override 2956 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 2957 int userId) { 2958 enforceCrossUserPermission(userId); 2959 throwIfLockdownEnabled(); 2960 2961 synchronized(mVpns) { 2962 Vpn vpn = mVpns.get(userId); 2963 if (vpn != null) { 2964 return vpn.prepare(oldPackage, newPackage); 2965 } else { 2966 return false; 2967 } 2968 } 2969 } 2970 2971 /** 2972 * Set whether the VPN package has the ability to launch VPNs without user intervention. 2973 * This method is used by system-privileged apps. 2974 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 2975 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 2976 * 2977 * @param packageName The package for which authorization state should change. 2978 * @param userId User for whom {@code packageName} is installed. 2979 * @param authorized {@code true} if this app should be able to start a VPN connection without 2980 * explicit user approval, {@code false} if not. 2981 * 2982 * @hide 2983 */ 2984 @Override 2985 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 2986 enforceCrossUserPermission(userId); 2987 2988 synchronized(mVpns) { 2989 Vpn vpn = mVpns.get(userId); 2990 if (vpn != null) { 2991 vpn.setPackageAuthorization(packageName, authorized); 2992 } 2993 } 2994 } 2995 2996 /** 2997 * Configure a TUN interface and return its file descriptor. Parameters 2998 * are encoded and opaque to this class. This method is used by VpnBuilder 2999 * and not available in ConnectivityManager. Permissions are checked in 3000 * Vpn class. 3001 * @hide 3002 */ 3003 @Override 3004 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3005 throwIfLockdownEnabled(); 3006 int user = UserHandle.getUserId(Binder.getCallingUid()); 3007 synchronized(mVpns) { 3008 return mVpns.get(user).establish(config); 3009 } 3010 } 3011 3012 /** 3013 * Start legacy VPN, controlling native daemons as needed. Creates a 3014 * secondary thread to perform connection work, returning quickly. 3015 */ 3016 @Override 3017 public void startLegacyVpn(VpnProfile profile) { 3018 throwIfLockdownEnabled(); 3019 final LinkProperties egress = getActiveLinkProperties(); 3020 if (egress == null) { 3021 throw new IllegalStateException("Missing active network connection"); 3022 } 3023 int user = UserHandle.getUserId(Binder.getCallingUid()); 3024 synchronized(mVpns) { 3025 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3026 } 3027 } 3028 3029 /** 3030 * Return the information of the ongoing legacy VPN. This method is used 3031 * by VpnSettings and not available in ConnectivityManager. Permissions 3032 * are checked in Vpn class. 3033 */ 3034 @Override 3035 public LegacyVpnInfo getLegacyVpnInfo(int userId) { 3036 enforceCrossUserPermission(userId); 3037 throwIfLockdownEnabled(); 3038 synchronized(mVpns) { 3039 return mVpns.get(userId).getLegacyVpnInfo(); 3040 } 3041 } 3042 3043 /** 3044 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3045 * and not available in ConnectivityManager. 3046 */ 3047 @Override 3048 public VpnInfo[] getAllVpnInfo() { 3049 enforceConnectivityInternalPermission(); 3050 if (mLockdownEnabled) { 3051 return new VpnInfo[0]; 3052 } 3053 3054 synchronized(mVpns) { 3055 List<VpnInfo> infoList = new ArrayList<>(); 3056 for (int i = 0; i < mVpns.size(); i++) { 3057 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3058 if (info != null) { 3059 infoList.add(info); 3060 } 3061 } 3062 return infoList.toArray(new VpnInfo[infoList.size()]); 3063 } 3064 } 3065 3066 /** 3067 * @return VPN information for accounting, or null if we can't retrieve all required 3068 * information, e.g primary underlying iface. 3069 */ 3070 @Nullable 3071 private VpnInfo createVpnInfo(Vpn vpn) { 3072 VpnInfo info = vpn.getVpnInfo(); 3073 if (info == null) { 3074 return null; 3075 } 3076 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3077 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3078 // the underlyingNetworks list. 3079 if (underlyingNetworks == null) { 3080 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3081 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3082 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3083 } 3084 } else if (underlyingNetworks.length > 0) { 3085 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3086 if (linkProperties != null) { 3087 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3088 } 3089 } 3090 return info.primaryUnderlyingIface == null ? null : info; 3091 } 3092 3093 /** 3094 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3095 * VpnDialogs and not available in ConnectivityManager. 3096 * Permissions are checked in Vpn class. 3097 * @hide 3098 */ 3099 @Override 3100 public VpnConfig getVpnConfig(int userId) { 3101 enforceCrossUserPermission(userId); 3102 synchronized(mVpns) { 3103 Vpn vpn = mVpns.get(userId); 3104 if (vpn != null) { 3105 return vpn.getVpnConfig(); 3106 } else { 3107 return null; 3108 } 3109 } 3110 } 3111 3112 @Override 3113 public boolean updateLockdownVpn() { 3114 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3115 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3116 return false; 3117 } 3118 3119 // Tear down existing lockdown if profile was removed 3120 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3121 if (mLockdownEnabled) { 3122 if (!mKeyStore.isUnlocked()) { 3123 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3124 return false; 3125 } 3126 3127 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3128 final VpnProfile profile = VpnProfile.decode( 3129 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3130 int user = UserHandle.getUserId(Binder.getCallingUid()); 3131 synchronized(mVpns) { 3132 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3133 profile)); 3134 } 3135 } else { 3136 setLockdownTracker(null); 3137 } 3138 3139 return true; 3140 } 3141 3142 /** 3143 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3144 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3145 */ 3146 private void setLockdownTracker(LockdownVpnTracker tracker) { 3147 // Shutdown any existing tracker 3148 final LockdownVpnTracker existing = mLockdownTracker; 3149 mLockdownTracker = null; 3150 if (existing != null) { 3151 existing.shutdown(); 3152 } 3153 3154 try { 3155 if (tracker != null) { 3156 mNetd.setFirewallEnabled(true); 3157 mNetd.setFirewallInterfaceRule("lo", true); 3158 mLockdownTracker = tracker; 3159 mLockdownTracker.init(); 3160 } else { 3161 mNetd.setFirewallEnabled(false); 3162 } 3163 } catch (RemoteException e) { 3164 // ignored; NMS lives inside system_server 3165 } 3166 } 3167 3168 private void throwIfLockdownEnabled() { 3169 if (mLockdownEnabled) { 3170 throw new IllegalStateException("Unavailable in lockdown mode"); 3171 } 3172 } 3173 3174 @Override 3175 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3176 // TODO: Remove? Any reason to trigger a provisioning check? 3177 return -1; 3178 } 3179 3180 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3181 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3182 3183 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3184 if (DBG) { 3185 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3186 + " action=" + action); 3187 } 3188 Intent intent = new Intent(action); 3189 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3190 // Concatenate the range of types onto the range of NetIDs. 3191 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3192 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3193 networkType, null, pendingIntent, false); 3194 } 3195 3196 /** 3197 * Show or hide network provisioning notifications. 3198 * 3199 * We use notifications for two purposes: to notify that a network requires sign in 3200 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3201 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3202 * particular network we can display the notification type that was most recently requested. 3203 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3204 * might first display NO_INTERNET, and then when the captive portal check completes, display 3205 * SIGN_IN. 3206 * 3207 * @param id an identifier that uniquely identifies this notification. This must match 3208 * between show and hide calls. We use the NetID value but for legacy callers 3209 * we concatenate the range of types with the range of NetIDs. 3210 */ 3211 private void setProvNotificationVisibleIntent(boolean visible, int id, 3212 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent, 3213 boolean highPriority) { 3214 if (DBG) { 3215 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3216 + " networkType=" + getNetworkTypeName(networkType) 3217 + " extraInfo=" + extraInfo + " highPriority=" + highPriority); 3218 } 3219 3220 Resources r = Resources.getSystem(); 3221 NotificationManager notificationManager = (NotificationManager) mContext 3222 .getSystemService(Context.NOTIFICATION_SERVICE); 3223 3224 if (visible) { 3225 CharSequence title; 3226 CharSequence details; 3227 int icon; 3228 if (notifyType == NotificationType.NO_INTERNET && 3229 networkType == ConnectivityManager.TYPE_WIFI) { 3230 title = r.getString(R.string.wifi_no_internet, 0); 3231 details = r.getString(R.string.wifi_no_internet_detailed); 3232 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3233 } else if (notifyType == NotificationType.SIGN_IN) { 3234 switch (networkType) { 3235 case ConnectivityManager.TYPE_WIFI: 3236 title = r.getString(R.string.wifi_available_sign_in, 0); 3237 details = r.getString(R.string.network_available_sign_in_detailed, 3238 extraInfo); 3239 icon = R.drawable.stat_notify_wifi_in_range; 3240 break; 3241 case ConnectivityManager.TYPE_MOBILE: 3242 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3243 title = r.getString(R.string.network_available_sign_in, 0); 3244 // TODO: Change this to pull from NetworkInfo once a printable 3245 // name has been added to it 3246 details = mTelephonyManager.getNetworkOperatorName(); 3247 icon = R.drawable.stat_notify_rssi_in_range; 3248 break; 3249 default: 3250 title = r.getString(R.string.network_available_sign_in, 0); 3251 details = r.getString(R.string.network_available_sign_in_detailed, 3252 extraInfo); 3253 icon = R.drawable.stat_notify_rssi_in_range; 3254 break; 3255 } 3256 } else { 3257 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3258 + getNetworkTypeName(networkType)); 3259 return; 3260 } 3261 3262 Notification notification = new Notification.Builder(mContext) 3263 .setWhen(0) 3264 .setSmallIcon(icon) 3265 .setAutoCancel(true) 3266 .setTicker(title) 3267 .setColor(mContext.getColor( 3268 com.android.internal.R.color.system_notification_accent_color)) 3269 .setContentTitle(title) 3270 .setContentText(details) 3271 .setContentIntent(intent) 3272 .setLocalOnly(true) 3273 .setPriority(highPriority ? 3274 Notification.PRIORITY_HIGH : 3275 Notification.PRIORITY_DEFAULT) 3276 .setDefaults(Notification.DEFAULT_ALL) 3277 .setOnlyAlertOnce(true) 3278 .build(); 3279 3280 try { 3281 notificationManager.notify(NOTIFICATION_ID, id, notification); 3282 } catch (NullPointerException npe) { 3283 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3284 npe.printStackTrace(); 3285 } 3286 } else { 3287 try { 3288 notificationManager.cancel(NOTIFICATION_ID, id); 3289 } catch (NullPointerException npe) { 3290 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3291 npe.printStackTrace(); 3292 } 3293 } 3294 } 3295 3296 /** Location to an updatable file listing carrier provisioning urls. 3297 * An example: 3298 * 3299 * <?xml version="1.0" encoding="utf-8"?> 3300 * <provisioningUrls> 3301 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3302 * </provisioningUrls> 3303 */ 3304 private static final String PROVISIONING_URL_PATH = 3305 "/data/misc/radio/provisioning_urls.xml"; 3306 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3307 3308 /** XML tag for root element. */ 3309 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3310 /** XML tag for individual url */ 3311 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3312 /** XML attribute for mcc */ 3313 private static final String ATTR_MCC = "mcc"; 3314 /** XML attribute for mnc */ 3315 private static final String ATTR_MNC = "mnc"; 3316 3317 private String getProvisioningUrlBaseFromFile() { 3318 FileReader fileReader = null; 3319 XmlPullParser parser = null; 3320 Configuration config = mContext.getResources().getConfiguration(); 3321 3322 try { 3323 fileReader = new FileReader(mProvisioningUrlFile); 3324 parser = Xml.newPullParser(); 3325 parser.setInput(fileReader); 3326 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3327 3328 while (true) { 3329 XmlUtils.nextElement(parser); 3330 3331 String element = parser.getName(); 3332 if (element == null) break; 3333 3334 if (element.equals(TAG_PROVISIONING_URL)) { 3335 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3336 try { 3337 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3338 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3339 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3340 parser.next(); 3341 if (parser.getEventType() == XmlPullParser.TEXT) { 3342 return parser.getText(); 3343 } 3344 } 3345 } 3346 } catch (NumberFormatException e) { 3347 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3348 } 3349 } 3350 } 3351 return null; 3352 } catch (FileNotFoundException e) { 3353 loge("Carrier Provisioning Urls file not found"); 3354 } catch (XmlPullParserException e) { 3355 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3356 } catch (IOException e) { 3357 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3358 } finally { 3359 if (fileReader != null) { 3360 try { 3361 fileReader.close(); 3362 } catch (IOException e) {} 3363 } 3364 } 3365 return null; 3366 } 3367 3368 @Override 3369 public String getMobileProvisioningUrl() { 3370 enforceConnectivityInternalPermission(); 3371 String url = getProvisioningUrlBaseFromFile(); 3372 if (TextUtils.isEmpty(url)) { 3373 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3374 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3375 } else { 3376 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3377 } 3378 // populate the iccid, imei and phone number in the provisioning url. 3379 if (!TextUtils.isEmpty(url)) { 3380 String phoneNumber = mTelephonyManager.getLine1Number(); 3381 if (TextUtils.isEmpty(phoneNumber)) { 3382 phoneNumber = "0000000000"; 3383 } 3384 url = String.format(url, 3385 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3386 mTelephonyManager.getDeviceId() /* IMEI */, 3387 phoneNumber /* Phone numer */); 3388 } 3389 3390 return url; 3391 } 3392 3393 @Override 3394 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3395 String action) { 3396 enforceConnectivityInternalPermission(); 3397 final long ident = Binder.clearCallingIdentity(); 3398 try { 3399 setProvNotificationVisible(visible, networkType, action); 3400 } finally { 3401 Binder.restoreCallingIdentity(ident); 3402 } 3403 } 3404 3405 @Override 3406 public void setAirplaneMode(boolean enable) { 3407 enforceConnectivityInternalPermission(); 3408 final long ident = Binder.clearCallingIdentity(); 3409 try { 3410 final ContentResolver cr = mContext.getContentResolver(); 3411 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3412 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3413 intent.putExtra("state", enable); 3414 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3415 } finally { 3416 Binder.restoreCallingIdentity(ident); 3417 } 3418 } 3419 3420 private void onUserStart(int userId) { 3421 synchronized(mVpns) { 3422 Vpn userVpn = mVpns.get(userId); 3423 if (userVpn != null) { 3424 loge("Starting user already has a VPN"); 3425 return; 3426 } 3427 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3428 mVpns.put(userId, userVpn); 3429 } 3430 } 3431 3432 private void onUserStop(int userId) { 3433 synchronized(mVpns) { 3434 Vpn userVpn = mVpns.get(userId); 3435 if (userVpn == null) { 3436 loge("Stopping user has no VPN"); 3437 return; 3438 } 3439 mVpns.delete(userId); 3440 } 3441 } 3442 3443 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3444 @Override 3445 public void onReceive(Context context, Intent intent) { 3446 final String action = intent.getAction(); 3447 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3448 if (userId == UserHandle.USER_NULL) return; 3449 3450 if (Intent.ACTION_USER_STARTING.equals(action)) { 3451 onUserStart(userId); 3452 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3453 onUserStop(userId); 3454 } 3455 } 3456 }; 3457 3458 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3459 new HashMap<Messenger, NetworkFactoryInfo>(); 3460 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3461 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3462 3463 private static class NetworkFactoryInfo { 3464 public final String name; 3465 public final Messenger messenger; 3466 public final AsyncChannel asyncChannel; 3467 3468 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3469 this.name = name; 3470 this.messenger = messenger; 3471 this.asyncChannel = asyncChannel; 3472 } 3473 } 3474 3475 /** 3476 * Tracks info about the requester. 3477 * Also used to notice when the calling process dies so we can self-expire 3478 */ 3479 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3480 static final boolean REQUEST = true; 3481 static final boolean LISTEN = false; 3482 3483 final NetworkRequest request; 3484 final PendingIntent mPendingIntent; 3485 boolean mPendingIntentSent; 3486 private final IBinder mBinder; 3487 final int mPid; 3488 final int mUid; 3489 final Messenger messenger; 3490 final boolean isRequest; 3491 3492 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3493 request = r; 3494 mPendingIntent = pi; 3495 messenger = null; 3496 mBinder = null; 3497 mPid = getCallingPid(); 3498 mUid = getCallingUid(); 3499 this.isRequest = isRequest; 3500 } 3501 3502 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3503 super(); 3504 messenger = m; 3505 request = r; 3506 mBinder = binder; 3507 mPid = getCallingPid(); 3508 mUid = getCallingUid(); 3509 this.isRequest = isRequest; 3510 mPendingIntent = null; 3511 3512 try { 3513 mBinder.linkToDeath(this, 0); 3514 } catch (RemoteException e) { 3515 binderDied(); 3516 } 3517 } 3518 3519 void unlinkDeathRecipient() { 3520 if (mBinder != null) { 3521 mBinder.unlinkToDeath(this, 0); 3522 } 3523 } 3524 3525 public void binderDied() { 3526 log("ConnectivityService NetworkRequestInfo binderDied(" + 3527 request + ", " + mBinder + ")"); 3528 releaseNetworkRequest(request); 3529 } 3530 3531 public String toString() { 3532 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3533 mPid + " for " + request + 3534 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3535 } 3536 } 3537 3538 private void ensureImmutableCapabilities(NetworkCapabilities networkCapabilities) { 3539 if (networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 3540 throw new IllegalArgumentException( 3541 "Cannot request network with NET_CAPABILITY_VALIDATED"); 3542 } 3543 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL)) { 3544 throw new IllegalArgumentException( 3545 "Cannot request network with NET_CAPABILITY_CAPTIVE_PORTAL"); 3546 } 3547 } 3548 3549 @Override 3550 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3551 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3552 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3553 enforceNetworkRequestPermissions(networkCapabilities); 3554 enforceMeteredApnPolicy(networkCapabilities); 3555 ensureImmutableCapabilities(networkCapabilities); 3556 3557 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3558 throw new IllegalArgumentException("Bad timeout specified"); 3559 } 3560 3561 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3562 nextNetworkRequestId()); 3563 if (DBG) log("requestNetwork for " + networkRequest); 3564 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3565 NetworkRequestInfo.REQUEST); 3566 3567 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3568 if (timeoutMs > 0) { 3569 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3570 nri), timeoutMs); 3571 } 3572 return networkRequest; 3573 } 3574 3575 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3576 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3577 enforceConnectivityInternalPermission(); 3578 } else { 3579 enforceChangePermission(); 3580 } 3581 } 3582 3583 @Override 3584 public boolean requestBandwidthUpdate(Network network) { 3585 enforceAccessPermission(); 3586 NetworkAgentInfo nai = null; 3587 if (network == null) { 3588 return false; 3589 } 3590 synchronized (mNetworkForNetId) { 3591 nai = mNetworkForNetId.get(network.netId); 3592 } 3593 if (nai != null) { 3594 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3595 return true; 3596 } 3597 return false; 3598 } 3599 3600 3601 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3602 // if UID is restricted, don't allow them to bring up metered APNs 3603 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3604 final int uidRules; 3605 final int uid = Binder.getCallingUid(); 3606 synchronized(mRulesLock) { 3607 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3608 } 3609 if ((uidRules & (RULE_REJECT_METERED | RULE_REJECT_ALL)) != 0) { 3610 // we could silently fail or we can filter the available nets to only give 3611 // them those they have access to. Chose the more useful 3612 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3613 } 3614 } 3615 } 3616 3617 @Override 3618 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3619 PendingIntent operation) { 3620 checkNotNull(operation, "PendingIntent cannot be null."); 3621 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3622 enforceNetworkRequestPermissions(networkCapabilities); 3623 enforceMeteredApnPolicy(networkCapabilities); 3624 ensureImmutableCapabilities(networkCapabilities); 3625 3626 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3627 nextNetworkRequestId()); 3628 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3629 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3630 NetworkRequestInfo.REQUEST); 3631 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3632 nri)); 3633 return networkRequest; 3634 } 3635 3636 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3637 mHandler.sendMessageDelayed( 3638 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3639 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3640 } 3641 3642 @Override 3643 public void releasePendingNetworkRequest(PendingIntent operation) { 3644 checkNotNull(operation, "PendingIntent cannot be null."); 3645 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3646 getCallingUid(), 0, operation)); 3647 } 3648 3649 // In order to implement the compatibility measure for pre-M apps that call 3650 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3651 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3652 // This ensures it has permission to do so. 3653 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3654 if (nc == null) { 3655 return false; 3656 } 3657 int[] transportTypes = nc.getTransportTypes(); 3658 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3659 return false; 3660 } 3661 try { 3662 mContext.enforceCallingOrSelfPermission( 3663 android.Manifest.permission.ACCESS_WIFI_STATE, 3664 "ConnectivityService"); 3665 } catch (SecurityException e) { 3666 return false; 3667 } 3668 return true; 3669 } 3670 3671 @Override 3672 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3673 Messenger messenger, IBinder binder) { 3674 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3675 enforceAccessPermission(); 3676 } 3677 3678 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3679 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3680 if (DBG) log("listenForNetwork for " + networkRequest); 3681 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3682 NetworkRequestInfo.LISTEN); 3683 3684 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3685 return networkRequest; 3686 } 3687 3688 @Override 3689 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3690 PendingIntent operation) { 3691 checkNotNull(operation, "PendingIntent cannot be null."); 3692 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3693 enforceAccessPermission(); 3694 } 3695 3696 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3697 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3698 if (DBG) log("pendingListenForNetwork for " + networkRequest + " to trigger " + operation); 3699 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3700 NetworkRequestInfo.LISTEN); 3701 3702 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3703 } 3704 3705 @Override 3706 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3707 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3708 0, networkRequest)); 3709 } 3710 3711 @Override 3712 public void registerNetworkFactory(Messenger messenger, String name) { 3713 enforceConnectivityInternalPermission(); 3714 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3715 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3716 } 3717 3718 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3719 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3720 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3721 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3722 } 3723 3724 @Override 3725 public void unregisterNetworkFactory(Messenger messenger) { 3726 enforceConnectivityInternalPermission(); 3727 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3728 } 3729 3730 private void handleUnregisterNetworkFactory(Messenger messenger) { 3731 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3732 if (nfi == null) { 3733 loge("Failed to find Messenger in unregisterNetworkFactory"); 3734 return; 3735 } 3736 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3737 } 3738 3739 /** 3740 * NetworkAgentInfo supporting a request by requestId. 3741 * These have already been vetted (their Capabilities satisfy the request) 3742 * and the are the highest scored network available. 3743 * the are keyed off the Requests requestId. 3744 */ 3745 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 3746 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3747 new SparseArray<NetworkAgentInfo>(); 3748 3749 // NOTE: Accessed on multiple threads, must be synchronized on itself. 3750 @GuardedBy("mNetworkForNetId") 3751 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3752 new SparseArray<NetworkAgentInfo>(); 3753 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 3754 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 3755 // there may not be a strict 1:1 correlation between the two. 3756 @GuardedBy("mNetworkForNetId") 3757 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 3758 3759 // NetworkAgentInfo keyed off its connecting messenger 3760 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3761 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 3762 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3763 new HashMap<Messenger, NetworkAgentInfo>(); 3764 3765 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3766 private final NetworkRequest mDefaultRequest; 3767 3768 // Request used to optionally keep mobile data active even when higher 3769 // priority networks like Wi-Fi are active. 3770 private final NetworkRequest mDefaultMobileDataRequest; 3771 3772 private NetworkAgentInfo getDefaultNetwork() { 3773 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3774 } 3775 3776 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3777 return nai == getDefaultNetwork(); 3778 } 3779 3780 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3781 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3782 int currentScore, NetworkMisc networkMisc) { 3783 enforceConnectivityInternalPermission(); 3784 3785 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3786 // satisfies mDefaultRequest. 3787 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3788 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 3789 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 3790 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest); 3791 synchronized (this) { 3792 nai.networkMonitor.systemReady = mSystemReady; 3793 } 3794 addValidationLogs(nai.networkMonitor.getValidationLogs(), nai.network); 3795 if (DBG) log("registerNetworkAgent " + nai); 3796 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3797 return nai.network.netId; 3798 } 3799 3800 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3801 if (VDBG) log("Got NetworkAgent Messenger"); 3802 mNetworkAgentInfos.put(na.messenger, na); 3803 synchronized (mNetworkForNetId) { 3804 mNetworkForNetId.put(na.network.netId, na); 3805 } 3806 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3807 NetworkInfo networkInfo = na.networkInfo; 3808 na.networkInfo = null; 3809 updateNetworkInfo(na, networkInfo); 3810 } 3811 3812 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3813 LinkProperties newLp = networkAgent.linkProperties; 3814 int netId = networkAgent.network.netId; 3815 3816 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3817 // we do anything else, make sure its LinkProperties are accurate. 3818 if (networkAgent.clatd != null) { 3819 networkAgent.clatd.fixupLinkProperties(oldLp); 3820 } 3821 3822 updateInterfaces(newLp, oldLp, netId); 3823 updateMtu(newLp, oldLp); 3824 // TODO - figure out what to do for clat 3825// for (LinkProperties lp : newLp.getStackedLinks()) { 3826// updateMtu(lp, null); 3827// } 3828 updateTcpBufferSizes(networkAgent); 3829 3830 // TODO: deprecate and remove mDefaultDns when we can do so safely. See http://b/18327075 3831 // In L, we used it only when the network had Internet access but provided no DNS servers. 3832 // For now, just disable it, and if disabling it doesn't break things, remove it. 3833 // final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3834 // NET_CAPABILITY_INTERNET); 3835 final boolean useDefaultDns = false; 3836 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3837 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3838 3839 updateClat(newLp, oldLp, networkAgent); 3840 if (isDefaultNetwork(networkAgent)) { 3841 handleApplyDefaultProxy(newLp.getHttpProxy()); 3842 } else { 3843 updateProxy(newLp, oldLp, networkAgent); 3844 } 3845 // TODO - move this check to cover the whole function 3846 if (!Objects.equals(newLp, oldLp)) { 3847 notifyIfacesChanged(); 3848 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3849 } 3850 } 3851 3852 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3853 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3854 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3855 3856 if (!wasRunningClat && shouldRunClat) { 3857 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3858 nai.clatd.start(); 3859 } else if (wasRunningClat && !shouldRunClat) { 3860 nai.clatd.stop(); 3861 } 3862 } 3863 3864 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3865 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3866 if (oldLp != null) { 3867 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3868 } else if (newLp != null) { 3869 interfaceDiff.added = newLp.getAllInterfaceNames(); 3870 } 3871 for (String iface : interfaceDiff.added) { 3872 try { 3873 if (DBG) log("Adding iface " + iface + " to network " + netId); 3874 mNetd.addInterfaceToNetwork(iface, netId); 3875 } catch (Exception e) { 3876 loge("Exception adding interface: " + e); 3877 } 3878 } 3879 for (String iface : interfaceDiff.removed) { 3880 try { 3881 if (DBG) log("Removing iface " + iface + " from network " + netId); 3882 mNetd.removeInterfaceFromNetwork(iface, netId); 3883 } catch (Exception e) { 3884 loge("Exception removing interface: " + e); 3885 } 3886 } 3887 } 3888 3889 /** 3890 * Have netd update routes from oldLp to newLp. 3891 * @return true if routes changed between oldLp and newLp 3892 */ 3893 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3894 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3895 if (oldLp != null) { 3896 routeDiff = oldLp.compareAllRoutes(newLp); 3897 } else if (newLp != null) { 3898 routeDiff.added = newLp.getAllRoutes(); 3899 } 3900 3901 // add routes before removing old in case it helps with continuous connectivity 3902 3903 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3904 for (RouteInfo route : routeDiff.added) { 3905 if (route.hasGateway()) continue; 3906 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3907 try { 3908 mNetd.addRoute(netId, route); 3909 } catch (Exception e) { 3910 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3911 loge("Exception in addRoute for non-gateway: " + e); 3912 } 3913 } 3914 } 3915 for (RouteInfo route : routeDiff.added) { 3916 if (route.hasGateway() == false) continue; 3917 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3918 try { 3919 mNetd.addRoute(netId, route); 3920 } catch (Exception e) { 3921 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3922 loge("Exception in addRoute for gateway: " + e); 3923 } 3924 } 3925 } 3926 3927 for (RouteInfo route : routeDiff.removed) { 3928 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3929 try { 3930 mNetd.removeRoute(netId, route); 3931 } catch (Exception e) { 3932 loge("Exception in removeRoute: " + e); 3933 } 3934 } 3935 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3936 } 3937 3938 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 3939 boolean flush, boolean useDefaultDns) { 3940 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 3941 Collection<InetAddress> dnses = newLp.getDnsServers(); 3942 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 3943 dnses = new ArrayList(); 3944 dnses.add(mDefaultDns); 3945 if (DBG) { 3946 loge("no dns provided for netId " + netId + ", so using defaults"); 3947 } 3948 } 3949 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 3950 try { 3951 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 3952 newLp.getDomains()); 3953 } catch (Exception e) { 3954 loge("Exception in setDnsServersForNetwork: " + e); 3955 } 3956 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 3957 if (defaultNai != null && defaultNai.network.netId == netId) { 3958 setDefaultDnsSystemProperties(dnses); 3959 } 3960 flushVmDnsCache(); 3961 } else if (flush) { 3962 try { 3963 mNetd.flushNetworkDnsCache(netId); 3964 } catch (Exception e) { 3965 loge("Exception in flushNetworkDnsCache: " + e); 3966 } 3967 flushVmDnsCache(); 3968 } 3969 } 3970 3971 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 3972 int last = 0; 3973 for (InetAddress dns : dnses) { 3974 ++last; 3975 String key = "net.dns" + last; 3976 String value = dns.getHostAddress(); 3977 SystemProperties.set(key, value); 3978 } 3979 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 3980 String key = "net.dns" + i; 3981 SystemProperties.set(key, ""); 3982 } 3983 mNumDnsEntries = last; 3984 } 3985 3986 /** 3987 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 3988 * augmented with any stateful capabilities implied from {@code networkAgent} 3989 * (e.g., validated status and captive portal status). 3990 * 3991 * @param nai the network having its capabilities updated. 3992 * @param networkCapabilities the new network capabilities. 3993 */ 3994 private void updateCapabilities(NetworkAgentInfo nai, NetworkCapabilities networkCapabilities) { 3995 // Don't modify caller's NetworkCapabilities. 3996 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3997 if (nai.lastValidated) { 3998 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 3999 } else { 4000 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4001 } 4002 if (nai.lastCaptivePortalDetected) { 4003 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4004 } else { 4005 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4006 } 4007 if (!Objects.equals(nai.networkCapabilities, networkCapabilities)) { 4008 final int oldScore = nai.getCurrentScore(); 4009 synchronized (nai) { 4010 nai.networkCapabilities = networkCapabilities; 4011 } 4012 rematchAllNetworksAndRequests(nai, oldScore); 4013 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 4014 } 4015 } 4016 4017 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4018 for (int i = 0; i < nai.networkRequests.size(); i++) { 4019 NetworkRequest nr = nai.networkRequests.valueAt(i); 4020 // Don't send listening requests to factories. b/17393458 4021 if (!isRequest(nr)) continue; 4022 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4023 } 4024 } 4025 4026 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4027 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4028 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4029 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4030 networkRequest); 4031 } 4032 } 4033 4034 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4035 int notificationType) { 4036 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4037 Intent intent = new Intent(); 4038 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4039 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4040 nri.mPendingIntentSent = true; 4041 sendIntent(nri.mPendingIntent, intent); 4042 } 4043 // else not handled 4044 } 4045 4046 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4047 mPendingIntentWakeLock.acquire(); 4048 try { 4049 if (DBG) log("Sending " + pendingIntent); 4050 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4051 } catch (PendingIntent.CanceledException e) { 4052 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4053 mPendingIntentWakeLock.release(); 4054 releasePendingNetworkRequest(pendingIntent); 4055 } 4056 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4057 } 4058 4059 @Override 4060 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4061 String resultData, Bundle resultExtras) { 4062 if (DBG) log("Finished sending " + pendingIntent); 4063 mPendingIntentWakeLock.release(); 4064 // Release with a delay so the receiving client has an opportunity to put in its 4065 // own request. 4066 releasePendingNetworkRequestWithDelay(pendingIntent); 4067 } 4068 4069 private void callCallbackForRequest(NetworkRequestInfo nri, 4070 NetworkAgentInfo networkAgent, int notificationType) { 4071 if (nri.messenger == null) return; // Default request has no msgr 4072 Bundle bundle = new Bundle(); 4073 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4074 new NetworkRequest(nri.request)); 4075 Message msg = Message.obtain(); 4076 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4077 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4078 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4079 } 4080 switch (notificationType) { 4081 case ConnectivityManager.CALLBACK_LOSING: { 4082 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4083 break; 4084 } 4085 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4086 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4087 new NetworkCapabilities(networkAgent.networkCapabilities)); 4088 break; 4089 } 4090 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4091 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4092 new LinkProperties(networkAgent.linkProperties)); 4093 break; 4094 } 4095 } 4096 msg.what = notificationType; 4097 msg.setData(bundle); 4098 try { 4099 if (VDBG) { 4100 log("sending notification " + notifyTypeToName(notificationType) + 4101 " for " + nri.request); 4102 } 4103 nri.messenger.send(msg); 4104 } catch (RemoteException e) { 4105 // may occur naturally in the race of binder death. 4106 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4107 } 4108 } 4109 4110 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4111 for (int i = 0; i < nai.networkRequests.size(); i++) { 4112 NetworkRequest nr = nai.networkRequests.valueAt(i); 4113 // Ignore listening requests. 4114 if (!isRequest(nr)) continue; 4115 loge("Dead network still had at least " + nr); 4116 break; 4117 } 4118 nai.asyncChannel.disconnect(); 4119 } 4120 4121 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4122 if (oldNetwork == null) { 4123 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4124 return; 4125 } 4126 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4127 teardownUnneededNetwork(oldNetwork); 4128 } 4129 4130 private void makeDefault(NetworkAgentInfo newNetwork) { 4131 if (DBG) log("Switching to new default network: " + newNetwork); 4132 setupDataActivityTracking(newNetwork); 4133 try { 4134 mNetd.setDefaultNetId(newNetwork.network.netId); 4135 } catch (Exception e) { 4136 loge("Exception setting default network :" + e); 4137 } 4138 notifyLockdownVpn(newNetwork); 4139 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4140 updateTcpBufferSizes(newNetwork); 4141 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4142 } 4143 4144 // Handles a network appearing or improving its score. 4145 // 4146 // - Evaluates all current NetworkRequests that can be 4147 // satisfied by newNetwork, and reassigns to newNetwork 4148 // any such requests for which newNetwork is the best. 4149 // 4150 // - Lingers any validated Networks that as a result are no longer 4151 // needed. A network is needed if it is the best network for 4152 // one or more NetworkRequests, or if it is a VPN. 4153 // 4154 // - Tears down newNetwork if it just became validated 4155 // but turns out to be unneeded. 4156 // 4157 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4158 // networks that have no chance (i.e. even if validated) 4159 // of becoming the highest scoring network. 4160 // 4161 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4162 // it does not remove NetworkRequests that other Networks could better satisfy. 4163 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4164 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4165 // as it performs better by a factor of the number of Networks. 4166 // 4167 // @param newNetwork is the network to be matched against NetworkRequests. 4168 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4169 // performed to tear down unvalidated networks that have no chance (i.e. even if 4170 // validated) of becoming the highest scoring network. 4171 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, 4172 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4173 if (!newNetwork.created) return; 4174 boolean keep = newNetwork.isVPN(); 4175 boolean isNewDefault = false; 4176 NetworkAgentInfo oldDefaultNetwork = null; 4177 if (DBG) log("rematching " + newNetwork.name()); 4178 // Find and migrate to this Network any NetworkRequests for 4179 // which this network is now the best. 4180 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4181 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4182 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4183 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4184 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4185 if (newNetwork == currentNetwork) { 4186 if (VDBG) { 4187 log("Network " + newNetwork.name() + " was already satisfying" + 4188 " request " + nri.request.requestId + ". No change."); 4189 } 4190 keep = true; 4191 continue; 4192 } 4193 4194 // check if it satisfies the NetworkCapabilities 4195 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4196 if (newNetwork.satisfies(nri.request)) { 4197 if (!nri.isRequest) { 4198 // This is not a request, it's a callback listener. 4199 // Add it to newNetwork regardless of score. 4200 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4201 continue; 4202 } 4203 4204 // next check if it's better than any current network we're using for 4205 // this request 4206 if (VDBG) { 4207 log("currentScore = " + 4208 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4209 ", newScore = " + newNetwork.getCurrentScore()); 4210 } 4211 if (currentNetwork == null || 4212 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4213 if (currentNetwork != null) { 4214 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4215 currentNetwork.networkRequests.remove(nri.request.requestId); 4216 currentNetwork.networkLingered.add(nri.request); 4217 affectedNetworks.add(currentNetwork); 4218 } else { 4219 if (DBG) log(" accepting network in place of null"); 4220 } 4221 unlinger(newNetwork); 4222 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4223 if (!newNetwork.addRequest(nri.request)) { 4224 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4225 } 4226 addedRequests.add(nri); 4227 keep = true; 4228 // Tell NetworkFactories about the new score, so they can stop 4229 // trying to connect if they know they cannot match it. 4230 // TODO - this could get expensive if we have alot of requests for this 4231 // network. Think about if there is a way to reduce this. Push 4232 // netid->request mapping to each factory? 4233 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4234 if (mDefaultRequest.requestId == nri.request.requestId) { 4235 isNewDefault = true; 4236 oldDefaultNetwork = currentNetwork; 4237 } 4238 } 4239 } 4240 } 4241 // Linger any networks that are no longer needed. 4242 for (NetworkAgentInfo nai : affectedNetworks) { 4243 if (nai.lingering) { 4244 // Already lingered. Nothing to do. This can only happen if "nai" is in 4245 // "affectedNetworks" twice. The reasoning being that to get added to 4246 // "affectedNetworks", "nai" must have been satisfying a NetworkRequest 4247 // (i.e. not lingered) so it could have only been lingered by this loop. 4248 // unneeded(nai) will be false and we'll call unlinger() below which would 4249 // be bad, so handle it here. 4250 } else if (unneeded(nai)) { 4251 linger(nai); 4252 } else { 4253 // Clear nai.networkLingered we might have added above. 4254 unlinger(nai); 4255 } 4256 } 4257 if (keep) { 4258 if (isNewDefault) { 4259 // Notify system services that this network is up. 4260 makeDefault(newNetwork); 4261 synchronized (ConnectivityService.this) { 4262 // have a new default network, release the transition wakelock in 4263 // a second if it's held. The second pause is to allow apps 4264 // to reconnect over the new network 4265 if (mNetTransitionWakeLock.isHeld()) { 4266 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4267 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4268 mNetTransitionWakeLockSerialNumber, 0), 4269 1000); 4270 } 4271 } 4272 } 4273 4274 // do this after the default net is switched, but 4275 // before LegacyTypeTracker sends legacy broadcasts 4276 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4277 4278 if (isNewDefault) { 4279 // Maintain the illusion: since the legacy API only 4280 // understands one network at a time, we must pretend 4281 // that the current default network disconnected before 4282 // the new one connected. 4283 if (oldDefaultNetwork != null) { 4284 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4285 oldDefaultNetwork, true); 4286 } 4287 mDefaultInetConditionPublished = newNetwork.lastValidated ? 100 : 0; 4288 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4289 notifyLockdownVpn(newNetwork); 4290 } 4291 4292 // Notify battery stats service about this network, both the normal 4293 // interface and any stacked links. 4294 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4295 try { 4296 final IBatteryStats bs = BatteryStatsService.getService(); 4297 final int type = newNetwork.networkInfo.getType(); 4298 4299 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4300 bs.noteNetworkInterfaceType(baseIface, type); 4301 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4302 final String stackedIface = stacked.getInterfaceName(); 4303 bs.noteNetworkInterfaceType(stackedIface, type); 4304 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4305 } 4306 } catch (RemoteException ignored) { 4307 } 4308 4309 // This has to happen after the notifyNetworkCallbacks as that tickles each 4310 // ConnectivityManager instance so that legacy requests correctly bind dns 4311 // requests to this network. The legacy users are listening for this bcast 4312 // and will generally do a dns request so they can ensureRouteToHost and if 4313 // they do that before the callbacks happen they'll use the default network. 4314 // 4315 // TODO: Is there still a race here? We send the broadcast 4316 // after sending the callback, but if the app can receive the 4317 // broadcast before the callback, it might still break. 4318 // 4319 // This *does* introduce a race where if the user uses the new api 4320 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4321 // they may get old info. Reverse this after the old startUsing api is removed. 4322 // This is on top of the multiple intent sequencing referenced in the todo above. 4323 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4324 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4325 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4326 // legacy type tracker filters out repeat adds 4327 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4328 } 4329 } 4330 4331 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4332 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4333 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4334 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4335 if (newNetwork.isVPN()) { 4336 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4337 } 4338 } 4339 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4340 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4341 if (unneeded(nai)) { 4342 if (DBG) log("Reaping " + nai.name()); 4343 teardownUnneededNetwork(nai); 4344 } 4345 } 4346 } 4347 } 4348 4349 /** 4350 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4351 * being disconnected. 4352 * @param changed If only one Network's score or capabilities have been modified since the last 4353 * time this function was called, pass this Network in this argument, otherwise pass 4354 * null. 4355 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4356 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4357 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4358 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4359 * network's score. 4360 */ 4361 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4362 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4363 // to avoid the slowness. It is not simply enough to process just "changed", for 4364 // example in the case where "changed"'s score decreases and another network should begin 4365 // satifying a NetworkRequest that "changed" currently satisfies. 4366 4367 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4368 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4369 // rematchNetworkAndRequests() handles. 4370 if (changed != null && oldScore < changed.getCurrentScore()) { 4371 rematchNetworkAndRequests(changed, ReapUnvalidatedNetworks.REAP); 4372 } else { 4373 final NetworkAgentInfo[] nais = mNetworkAgentInfos.values().toArray( 4374 new NetworkAgentInfo[mNetworkAgentInfos.size()]); 4375 // Rematch higher scoring networks first to prevent requests first matching a lower 4376 // scoring network and then a higher scoring network, which could produce multiple 4377 // callbacks and inadvertently unlinger networks. 4378 Arrays.sort(nais); 4379 for (NetworkAgentInfo nai : nais) { 4380 rematchNetworkAndRequests(nai, 4381 // Only reap the last time through the loop. Reaping before all rematching 4382 // is complete could incorrectly teardown a network that hasn't yet been 4383 // rematched. 4384 (nai != nais[nais.length-1]) ? ReapUnvalidatedNetworks.DONT_REAP 4385 : ReapUnvalidatedNetworks.REAP); 4386 } 4387 } 4388 } 4389 4390 private void updateInetCondition(NetworkAgentInfo nai) { 4391 // Don't bother updating until we've graduated to validated at least once. 4392 if (!nai.everValidated) return; 4393 // For now only update icons for default connection. 4394 // TODO: Update WiFi and cellular icons separately. b/17237507 4395 if (!isDefaultNetwork(nai)) return; 4396 4397 int newInetCondition = nai.lastValidated ? 100 : 0; 4398 // Don't repeat publish. 4399 if (newInetCondition == mDefaultInetConditionPublished) return; 4400 4401 mDefaultInetConditionPublished = newInetCondition; 4402 sendInetConditionBroadcast(nai.networkInfo); 4403 } 4404 4405 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4406 if (mLockdownTracker != null) { 4407 if (nai != null && nai.isVPN()) { 4408 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4409 } else { 4410 mLockdownTracker.onNetworkInfoChanged(); 4411 } 4412 } 4413 } 4414 4415 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4416 NetworkInfo.State state = newInfo.getState(); 4417 NetworkInfo oldInfo = null; 4418 final int oldScore = networkAgent.getCurrentScore(); 4419 synchronized (networkAgent) { 4420 oldInfo = networkAgent.networkInfo; 4421 networkAgent.networkInfo = newInfo; 4422 } 4423 notifyLockdownVpn(networkAgent); 4424 4425 if (oldInfo != null && oldInfo.getState() == state) { 4426 if (VDBG) log("ignoring duplicate network state non-change"); 4427 return; 4428 } 4429 if (DBG) { 4430 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4431 (oldInfo == null ? "null" : oldInfo.getState()) + 4432 " to " + state); 4433 } 4434 4435 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4436 try { 4437 // This should never fail. Specifying an already in use NetID will cause failure. 4438 if (networkAgent.isVPN()) { 4439 mNetd.createVirtualNetwork(networkAgent.network.netId, 4440 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4441 (networkAgent.networkMisc == null || 4442 !networkAgent.networkMisc.allowBypass)); 4443 } else { 4444 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4445 } 4446 } catch (Exception e) { 4447 loge("Error creating network " + networkAgent.network.netId + ": " 4448 + e.getMessage()); 4449 return; 4450 } 4451 networkAgent.created = true; 4452 updateLinkProperties(networkAgent, null); 4453 notifyIfacesChanged(); 4454 4455 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4456 scheduleUnvalidatedPrompt(networkAgent); 4457 4458 if (networkAgent.isVPN()) { 4459 // Temporarily disable the default proxy (not global). 4460 synchronized (mProxyLock) { 4461 if (!mDefaultProxyDisabled) { 4462 mDefaultProxyDisabled = true; 4463 if (mGlobalProxy == null && mDefaultProxy != null) { 4464 sendProxyBroadcast(null); 4465 } 4466 } 4467 } 4468 // TODO: support proxy per network. 4469 } 4470 4471 // Consider network even though it is not yet validated. 4472 rematchNetworkAndRequests(networkAgent, ReapUnvalidatedNetworks.REAP); 4473 4474 // This has to happen after matching the requests, because callbacks are just requests. 4475 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4476 } else if (state == NetworkInfo.State.DISCONNECTED) { 4477 networkAgent.asyncChannel.disconnect(); 4478 if (networkAgent.isVPN()) { 4479 synchronized (mProxyLock) { 4480 if (mDefaultProxyDisabled) { 4481 mDefaultProxyDisabled = false; 4482 if (mGlobalProxy == null && mDefaultProxy != null) { 4483 sendProxyBroadcast(mDefaultProxy); 4484 } 4485 } 4486 } 4487 } 4488 } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) || 4489 state == NetworkInfo.State.SUSPENDED) { 4490 // going into or coming out of SUSPEND: rescore and notify 4491 if (networkAgent.getCurrentScore() != oldScore) { 4492 rematchAllNetworksAndRequests(networkAgent, oldScore); 4493 } 4494 notifyNetworkCallbacks(networkAgent, (state == NetworkInfo.State.SUSPENDED ? 4495 ConnectivityManager.CALLBACK_SUSPENDED : 4496 ConnectivityManager.CALLBACK_RESUMED)); 4497 mLegacyTypeTracker.update(networkAgent); 4498 } 4499 } 4500 4501 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4502 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4503 if (score < 0) { 4504 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4505 "). Bumping score to min of 0"); 4506 score = 0; 4507 } 4508 4509 final int oldScore = nai.getCurrentScore(); 4510 nai.setCurrentScore(score); 4511 4512 rematchAllNetworksAndRequests(nai, oldScore); 4513 4514 sendUpdatedScoreToFactories(nai); 4515 } 4516 4517 // notify only this one new request of the current state 4518 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4519 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4520 // TODO - read state from monitor to decide what to send. 4521// if (nai.networkMonitor.isLingering()) { 4522// notifyType = NetworkCallbacks.LOSING; 4523// } else if (nai.networkMonitor.isEvaluating()) { 4524// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4525// } 4526 if (nri.mPendingIntent == null) { 4527 callCallbackForRequest(nri, nai, notifyType); 4528 } else { 4529 sendPendingIntentForRequest(nri, nai, notifyType); 4530 } 4531 } 4532 4533 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, DetailedState state, int type) { 4534 // The NetworkInfo we actually send out has no bearing on the real 4535 // state of affairs. For example, if the default connection is mobile, 4536 // and a request for HIPRI has just gone away, we need to pretend that 4537 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4538 // the state to DISCONNECTED, even though the network is of type MOBILE 4539 // and is still connected. 4540 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4541 info.setType(type); 4542 if (state != DetailedState.DISCONNECTED) { 4543 info.setDetailedState(state, null, info.getExtraInfo()); 4544 sendConnectedBroadcast(info); 4545 } else { 4546 info.setDetailedState(state, info.getReason(), info.getExtraInfo()); 4547 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4548 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4549 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4550 if (info.isFailover()) { 4551 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4552 nai.networkInfo.setFailover(false); 4553 } 4554 if (info.getReason() != null) { 4555 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4556 } 4557 if (info.getExtraInfo() != null) { 4558 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4559 } 4560 NetworkAgentInfo newDefaultAgent = null; 4561 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4562 newDefaultAgent = getDefaultNetwork(); 4563 if (newDefaultAgent != null) { 4564 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4565 newDefaultAgent.networkInfo); 4566 } else { 4567 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4568 } 4569 } 4570 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4571 mDefaultInetConditionPublished); 4572 sendStickyBroadcast(intent); 4573 if (newDefaultAgent != null) { 4574 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4575 } 4576 } 4577 } 4578 4579 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4580 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4581 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4582 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4583 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4584 if (VDBG) log(" sending notification for " + nr); 4585 if (nri.mPendingIntent == null) { 4586 callCallbackForRequest(nri, networkAgent, notifyType); 4587 } else { 4588 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4589 } 4590 } 4591 } 4592 4593 private String notifyTypeToName(int notifyType) { 4594 switch (notifyType) { 4595 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4596 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4597 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4598 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4599 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4600 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4601 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4602 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4603 } 4604 return "UNKNOWN"; 4605 } 4606 4607 /** 4608 * Notify other system services that set of active ifaces has changed. 4609 */ 4610 private void notifyIfacesChanged() { 4611 try { 4612 mStatsService.forceUpdateIfaces(); 4613 } catch (Exception ignored) { 4614 } 4615 } 4616 4617 @Override 4618 public boolean addVpnAddress(String address, int prefixLength) { 4619 throwIfLockdownEnabled(); 4620 int user = UserHandle.getUserId(Binder.getCallingUid()); 4621 synchronized (mVpns) { 4622 return mVpns.get(user).addAddress(address, prefixLength); 4623 } 4624 } 4625 4626 @Override 4627 public boolean removeVpnAddress(String address, int prefixLength) { 4628 throwIfLockdownEnabled(); 4629 int user = UserHandle.getUserId(Binder.getCallingUid()); 4630 synchronized (mVpns) { 4631 return mVpns.get(user).removeAddress(address, prefixLength); 4632 } 4633 } 4634 4635 @Override 4636 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4637 throwIfLockdownEnabled(); 4638 int user = UserHandle.getUserId(Binder.getCallingUid()); 4639 boolean success; 4640 synchronized (mVpns) { 4641 success = mVpns.get(user).setUnderlyingNetworks(networks); 4642 } 4643 if (success) { 4644 notifyIfacesChanged(); 4645 } 4646 return success; 4647 } 4648 4649 @Override 4650 public void factoryReset() { 4651 enforceConnectivityInternalPermission(); 4652 4653 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 4654 return; 4655 } 4656 4657 final int userId = UserHandle.getCallingUserId(); 4658 4659 // Turn airplane mode off 4660 setAirplaneMode(false); 4661 4662 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 4663 // Untether 4664 for (String tether : getTetheredIfaces()) { 4665 untether(tether); 4666 } 4667 } 4668 4669 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 4670 // Turn VPN off 4671 VpnConfig vpnConfig = getVpnConfig(userId); 4672 if (vpnConfig != null) { 4673 if (vpnConfig.legacy) { 4674 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 4675 } else { 4676 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 4677 // in the future without user intervention. 4678 setVpnPackageAuthorization(vpnConfig.user, userId, false); 4679 4680 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 4681 } 4682 } 4683 } 4684 } 4685} 4686