ConnectivityService.java revision bf10991d76ce6674726a668939be300cae150130
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.ConnectivityManager.PacketKeepalive; 51import android.net.IConnectivityManager; 52import android.net.INetworkManagementEventObserver; 53import android.net.INetworkPolicyListener; 54import android.net.INetworkPolicyManager; 55import android.net.INetworkStatsService; 56import android.net.LinkProperties; 57import android.net.LinkProperties.CompareResult; 58import android.net.Network; 59import android.net.NetworkAgent; 60import android.net.NetworkCapabilities; 61import android.net.NetworkConfig; 62import android.net.NetworkInfo; 63import android.net.NetworkInfo.DetailedState; 64import android.net.NetworkMisc; 65import android.net.NetworkQuotaInfo; 66import android.net.NetworkRequest; 67import android.net.NetworkState; 68import android.net.NetworkUtils; 69import android.net.Proxy; 70import android.net.ProxyInfo; 71import android.net.RouteInfo; 72import android.net.UidRange; 73import android.net.Uri; 74import android.os.Binder; 75import android.os.Bundle; 76import android.os.FileUtils; 77import android.os.Handler; 78import android.os.HandlerThread; 79import android.os.IBinder; 80import android.os.INetworkManagementService; 81import android.os.Looper; 82import android.os.Message; 83import android.os.Messenger; 84import android.os.ParcelFileDescriptor; 85import android.os.PowerManager; 86import android.os.Process; 87import android.os.RemoteException; 88import android.os.SystemClock; 89import android.os.SystemProperties; 90import android.os.UserHandle; 91import android.os.UserManager; 92import android.provider.Settings; 93import android.security.Credentials; 94import android.security.KeyStore; 95import android.telephony.TelephonyManager; 96import android.text.TextUtils; 97import android.util.LocalLog; 98import android.util.LocalLog.ReadOnlyLocalLog; 99import android.util.Pair; 100import android.util.Slog; 101import android.util.SparseArray; 102import android.util.SparseBooleanArray; 103import android.util.SparseIntArray; 104import android.util.Xml; 105 106import com.android.internal.R; 107import com.android.internal.annotations.GuardedBy; 108import com.android.internal.annotations.VisibleForTesting; 109import com.android.internal.app.IBatteryStats; 110import com.android.internal.net.LegacyVpnInfo; 111import com.android.internal.net.NetworkStatsFactory; 112import com.android.internal.net.VpnConfig; 113import com.android.internal.net.VpnInfo; 114import com.android.internal.net.VpnProfile; 115import com.android.internal.telephony.DctConstants; 116import com.android.internal.util.AsyncChannel; 117import com.android.internal.util.IndentingPrintWriter; 118import com.android.internal.util.XmlUtils; 119import com.android.server.am.BatteryStatsService; 120import com.android.server.connectivity.DataConnectionStats; 121import com.android.server.connectivity.KeepaliveTracker; 122import com.android.server.connectivity.NetworkDiagnostics; 123import com.android.server.connectivity.Nat464Xlat; 124import com.android.server.connectivity.NetworkAgentInfo; 125import com.android.server.connectivity.NetworkMonitor; 126import com.android.server.connectivity.PacManager; 127import com.android.server.connectivity.PermissionMonitor; 128import com.android.server.connectivity.Tethering; 129import com.android.server.connectivity.Vpn; 130import com.android.server.net.BaseNetworkObserver; 131import com.android.server.net.LockdownVpnTracker; 132import com.google.android.collect.Lists; 133import com.google.android.collect.Sets; 134 135import org.xmlpull.v1.XmlPullParser; 136import org.xmlpull.v1.XmlPullParserException; 137 138import java.io.File; 139import java.io.FileDescriptor; 140import java.io.FileNotFoundException; 141import java.io.FileReader; 142import java.io.IOException; 143import java.io.PrintWriter; 144import java.net.Inet4Address; 145import java.net.InetAddress; 146import java.net.UnknownHostException; 147import java.util.ArrayDeque; 148import java.util.ArrayList; 149import java.util.Arrays; 150import java.util.Collection; 151import java.util.HashMap; 152import java.util.HashSet; 153import java.util.SortedSet; 154import java.util.TreeSet; 155import java.util.Iterator; 156import java.util.List; 157import java.util.Map; 158import java.util.Objects; 159import java.util.concurrent.atomic.AtomicInteger; 160 161/** 162 * @hide 163 */ 164public class ConnectivityService extends IConnectivityManager.Stub 165 implements PendingIntent.OnFinished { 166 private static final String TAG = "ConnectivityService"; 167 168 private static final boolean DBG = true; 169 private static final boolean VDBG = false; 170 171 private static final boolean LOGD_RULES = false; 172 173 // TODO: create better separation between radio types and network types 174 175 // how long to wait before switching back to a radio's default network 176 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 177 // system property that can override the above value 178 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 179 "android.telephony.apn-restore"; 180 181 // How long to wait before putting up a "This network doesn't have an Internet connection, 182 // connect anyway?" dialog after the user selects a network that doesn't validate. 183 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 184 185 // How long to delay to removal of a pending intent based request. 186 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 187 private final int mReleasePendingIntentDelayMs; 188 189 private Tethering mTethering; 190 191 private final PermissionMonitor mPermissionMonitor; 192 193 private KeyStore mKeyStore; 194 195 @GuardedBy("mVpns") 196 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 197 198 private boolean mLockdownEnabled; 199 private LockdownVpnTracker mLockdownTracker; 200 201 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 202 private Object mRulesLock = new Object(); 203 /** Currently active network rules by UID. */ 204 private SparseIntArray mUidRules = new SparseIntArray(); 205 /** Set of ifaces that are costly. */ 206 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 207 208 final private Context mContext; 209 private int mNetworkPreference; 210 // 0 is full bad, 100 is full good 211 private int mDefaultInetConditionPublished = 0; 212 213 private int mNumDnsEntries; 214 215 private boolean mTestMode; 216 private static ConnectivityService sServiceInstance; 217 218 private INetworkManagementService mNetd; 219 private INetworkStatsService mStatsService; 220 private INetworkPolicyManager mPolicyManager; 221 222 private String mCurrentTcpBufferSizes; 223 224 private static final int ENABLED = 1; 225 private static final int DISABLED = 0; 226 227 private enum ReapUnvalidatedNetworks { 228 // Tear down networks that have no chance (e.g. even if validated) of becoming 229 // the highest scoring network satisfying a NetworkRequest. This should be passed when 230 // all networks have been rematched against all NetworkRequests. 231 REAP, 232 // Don't reap networks. This should be passed when some networks have not yet been 233 // rematched against all NetworkRequests. 234 DONT_REAP 235 }; 236 237 /** 238 * used internally to change our mobile data enabled flag 239 */ 240 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 241 242 /** 243 * used internally to clear a wakelock when transitioning 244 * from one net to another. Clear happens when we get a new 245 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 246 * after a timeout if no network is found (typically 1 min). 247 */ 248 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 249 250 /** 251 * used internally to reload global proxy settings 252 */ 253 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 254 255 /** 256 * used internally to send a sticky broadcast delayed. 257 */ 258 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 259 260 /** 261 * PAC manager has received new port. 262 */ 263 private static final int EVENT_PROXY_HAS_CHANGED = 16; 264 265 /** 266 * used internally when registering NetworkFactories 267 * obj = NetworkFactoryInfo 268 */ 269 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 270 271 /** 272 * used internally when registering NetworkAgents 273 * obj = Messenger 274 */ 275 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 276 277 /** 278 * used to add a network request 279 * includes a NetworkRequestInfo 280 */ 281 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 282 283 /** 284 * indicates a timeout period is over - check if we had a network yet or not 285 * and if not, call the timeout calback (but leave the request live until they 286 * cancel it. 287 * includes a NetworkRequestInfo 288 */ 289 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 290 291 /** 292 * used to add a network listener - no request 293 * includes a NetworkRequestInfo 294 */ 295 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 296 297 /** 298 * used to remove a network request, either a listener or a real request 299 * arg1 = UID of caller 300 * obj = NetworkRequest 301 */ 302 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 303 304 /** 305 * used internally when registering NetworkFactories 306 * obj = Messenger 307 */ 308 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 309 310 /** 311 * used internally to expire a wakelock when transitioning 312 * from one net to another. Expire happens when we fail to find 313 * a new network (typically after 1 minute) - 314 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 315 * a replacement network. 316 */ 317 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 318 319 /** 320 * Used internally to indicate the system is ready. 321 */ 322 private static final int EVENT_SYSTEM_READY = 25; 323 324 /** 325 * used to add a network request with a pending intent 326 * obj = NetworkRequestInfo 327 */ 328 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 329 330 /** 331 * used to remove a pending intent and its associated network request. 332 * arg1 = UID of caller 333 * obj = PendingIntent 334 */ 335 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 336 337 /** 338 * used to specify whether a network should be used even if unvalidated. 339 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 340 * arg2 = whether to remember this choice in the future (1 or 0) 341 * obj = network 342 */ 343 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 344 345 /** 346 * used to ask the user to confirm a connection to an unvalidated network. 347 * obj = network 348 */ 349 private static final int EVENT_PROMPT_UNVALIDATED = 29; 350 351 /** 352 * used internally to (re)configure mobile data always-on settings. 353 */ 354 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 355 356 /** 357 * used to add a network listener with a pending intent 358 * obj = NetworkRequestInfo 359 */ 360 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 361 362 /** Handler used for internal events. */ 363 final private InternalHandler mHandler; 364 /** Handler used for incoming {@link NetworkStateTracker} events. */ 365 final private NetworkStateTrackerHandler mTrackerHandler; 366 367 private boolean mSystemReady; 368 private Intent mInitialBroadcast; 369 370 private PowerManager.WakeLock mNetTransitionWakeLock; 371 private String mNetTransitionWakeLockCausedBy = ""; 372 private int mNetTransitionWakeLockSerialNumber; 373 private int mNetTransitionWakeLockTimeout; 374 private final PowerManager.WakeLock mPendingIntentWakeLock; 375 376 private InetAddress mDefaultDns; 377 378 // used in DBG mode to track inet condition reports 379 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 380 private ArrayList mInetLog; 381 382 // track the current default http proxy - tell the world if we get a new one (real change) 383 private volatile ProxyInfo mDefaultProxy = null; 384 private Object mProxyLock = new Object(); 385 private boolean mDefaultProxyDisabled = false; 386 387 // track the global proxy. 388 private ProxyInfo mGlobalProxy = null; 389 390 private PacManager mPacManager = null; 391 392 final private SettingsObserver mSettingsObserver; 393 394 private UserManager mUserManager; 395 396 NetworkConfig[] mNetConfigs; 397 int mNetworksDefined; 398 399 // the set of network types that can only be enabled by system/sig apps 400 List mProtectedNetworks; 401 402 private DataConnectionStats mDataConnectionStats; 403 404 TelephonyManager mTelephonyManager; 405 406 private KeepaliveTracker mKeepaliveTracker; 407 408 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 409 private final static int MIN_NET_ID = 100; // some reserved marks 410 private final static int MAX_NET_ID = 65535; 411 private int mNextNetId = MIN_NET_ID; 412 413 // sequence number of NetworkRequests 414 private int mNextNetworkRequestId = 1; 415 416 // NetworkRequest activity String log entries. 417 private static final int MAX_NETWORK_REQUEST_LOGS = 20; 418 private final LocalLog mNetworkRequestInfoLogs = new LocalLog(MAX_NETWORK_REQUEST_LOGS); 419 420 // Array of <Network,ReadOnlyLocalLogs> tracking network validation and results 421 private static final int MAX_VALIDATION_LOGS = 10; 422 private final ArrayDeque<Pair<Network,ReadOnlyLocalLog>> mValidationLogs = 423 new ArrayDeque<Pair<Network,ReadOnlyLocalLog>>(MAX_VALIDATION_LOGS); 424 425 private void addValidationLogs(ReadOnlyLocalLog log, Network network) { 426 synchronized(mValidationLogs) { 427 while (mValidationLogs.size() >= MAX_VALIDATION_LOGS) { 428 mValidationLogs.removeLast(); 429 } 430 mValidationLogs.addFirst(new Pair(network, log)); 431 } 432 } 433 434 /** 435 * Implements support for the legacy "one network per network type" model. 436 * 437 * We used to have a static array of NetworkStateTrackers, one for each 438 * network type, but that doesn't work any more now that we can have, 439 * for example, more that one wifi network. This class stores all the 440 * NetworkAgentInfo objects that support a given type, but the legacy 441 * API will only see the first one. 442 * 443 * It serves two main purposes: 444 * 445 * 1. Provide information about "the network for a given type" (since this 446 * API only supports one). 447 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 448 * the first network for a given type changes, or if the default network 449 * changes. 450 */ 451 private class LegacyTypeTracker { 452 453 private static final boolean DBG = true; 454 private static final boolean VDBG = false; 455 private static final String TAG = "CSLegacyTypeTracker"; 456 457 /** 458 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 459 * Each list holds references to all NetworkAgentInfos that are used to 460 * satisfy requests for that network type. 461 * 462 * This array is built out at startup such that an unsupported network 463 * doesn't get an ArrayList instance, making this a tristate: 464 * unsupported, supported but not active and active. 465 * 466 * The actual lists are populated when we scan the network types that 467 * are supported on this device. 468 */ 469 private ArrayList<NetworkAgentInfo> mTypeLists[]; 470 471 public LegacyTypeTracker() { 472 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 473 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 474 } 475 476 public void addSupportedType(int type) { 477 if (mTypeLists[type] != null) { 478 throw new IllegalStateException( 479 "legacy list for type " + type + "already initialized"); 480 } 481 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 482 } 483 484 public boolean isTypeSupported(int type) { 485 return isNetworkTypeValid(type) && mTypeLists[type] != null; 486 } 487 488 public NetworkAgentInfo getNetworkForType(int type) { 489 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 490 return mTypeLists[type].get(0); 491 } else { 492 return null; 493 } 494 } 495 496 private void maybeLogBroadcast(NetworkAgentInfo nai, DetailedState state, int type, 497 boolean isDefaultNetwork) { 498 if (DBG) { 499 log("Sending " + state + 500 " broadcast for type " + type + " " + nai.name() + 501 " isDefaultNetwork=" + isDefaultNetwork); 502 } 503 } 504 505 /** Adds the given network to the specified legacy type list. */ 506 public void add(int type, NetworkAgentInfo nai) { 507 if (!isTypeSupported(type)) { 508 return; // Invalid network type. 509 } 510 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 511 512 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 513 if (list.contains(nai)) { 514 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 515 return; 516 } 517 518 list.add(nai); 519 520 // Send a broadcast if this is the first network of its type or if it's the default. 521 final boolean isDefaultNetwork = isDefaultNetwork(nai); 522 if (list.size() == 1 || isDefaultNetwork) { 523 maybeLogBroadcast(nai, DetailedState.CONNECTED, type, isDefaultNetwork); 524 sendLegacyNetworkBroadcast(nai, DetailedState.CONNECTED, type); 525 } 526 } 527 528 /** Removes the given network from the specified legacy type list. */ 529 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 530 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 531 if (list == null || list.isEmpty()) { 532 return; 533 } 534 535 final boolean wasFirstNetwork = list.get(0).equals(nai); 536 537 if (!list.remove(nai)) { 538 return; 539 } 540 541 final DetailedState state = DetailedState.DISCONNECTED; 542 543 if (wasFirstNetwork || wasDefault) { 544 maybeLogBroadcast(nai, state, type, wasDefault); 545 sendLegacyNetworkBroadcast(nai, state, type); 546 } 547 548 if (!list.isEmpty() && wasFirstNetwork) { 549 if (DBG) log("Other network available for type " + type + 550 ", sending connected broadcast"); 551 final NetworkAgentInfo replacement = list.get(0); 552 maybeLogBroadcast(replacement, state, type, isDefaultNetwork(replacement)); 553 sendLegacyNetworkBroadcast(replacement, state, type); 554 } 555 } 556 557 /** Removes the given network from all legacy type lists. */ 558 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 559 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 560 for (int type = 0; type < mTypeLists.length; type++) { 561 remove(type, nai, wasDefault); 562 } 563 } 564 565 // send out another legacy broadcast - currently only used for suspend/unsuspend 566 // toggle 567 public void update(NetworkAgentInfo nai) { 568 final boolean isDefault = isDefaultNetwork(nai); 569 final DetailedState state = nai.networkInfo.getDetailedState(); 570 for (int type = 0; type < mTypeLists.length; type++) { 571 final ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 572 final boolean contains = (list != null && list.contains(nai)); 573 final boolean isFirst = (list != null && list.size() > 0 && nai == list.get(0)); 574 if (isFirst || (contains && isDefault)) { 575 maybeLogBroadcast(nai, state, type, isDefault); 576 sendLegacyNetworkBroadcast(nai, state, type); 577 } 578 } 579 } 580 581 private String naiToString(NetworkAgentInfo nai) { 582 String name = (nai != null) ? nai.name() : "null"; 583 String state = (nai.networkInfo != null) ? 584 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 585 "???/???"; 586 return name + " " + state; 587 } 588 589 public void dump(IndentingPrintWriter pw) { 590 pw.println("mLegacyTypeTracker:"); 591 pw.increaseIndent(); 592 pw.print("Supported types:"); 593 for (int type = 0; type < mTypeLists.length; type++) { 594 if (mTypeLists[type] != null) pw.print(" " + type); 595 } 596 pw.println(); 597 pw.println("Current state:"); 598 pw.increaseIndent(); 599 for (int type = 0; type < mTypeLists.length; type++) { 600 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 601 for (NetworkAgentInfo nai : mTypeLists[type]) { 602 pw.println(type + " " + naiToString(nai)); 603 } 604 } 605 pw.decreaseIndent(); 606 pw.decreaseIndent(); 607 pw.println(); 608 } 609 610 // This class needs its own log method because it has a different TAG. 611 private void log(String s) { 612 Slog.d(TAG, s); 613 } 614 615 } 616 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 617 618 public ConnectivityService(Context context, INetworkManagementService netManager, 619 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 620 if (DBG) log("ConnectivityService starting up"); 621 622 mDefaultRequest = createInternetRequestForTransport(-1); 623 NetworkRequestInfo defaultNRI = new NetworkRequestInfo(null, mDefaultRequest, 624 new Binder(), NetworkRequestInfo.REQUEST); 625 mNetworkRequests.put(mDefaultRequest, defaultNRI); 626 mNetworkRequestInfoLogs.log("REGISTER " + defaultNRI); 627 628 mDefaultMobileDataRequest = createInternetRequestForTransport( 629 NetworkCapabilities.TRANSPORT_CELLULAR); 630 631 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 632 handlerThread.start(); 633 mHandler = new InternalHandler(handlerThread.getLooper()); 634 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 635 636 // setup our unique device name 637 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 638 String id = Settings.Secure.getString(context.getContentResolver(), 639 Settings.Secure.ANDROID_ID); 640 if (id != null && id.length() > 0) { 641 String name = new String("android-").concat(id); 642 SystemProperties.set("net.hostname", name); 643 } 644 } 645 646 // read our default dns server ip 647 String dns = Settings.Global.getString(context.getContentResolver(), 648 Settings.Global.DEFAULT_DNS_SERVER); 649 if (dns == null || dns.length() == 0) { 650 dns = context.getResources().getString( 651 com.android.internal.R.string.config_default_dns_server); 652 } 653 try { 654 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 655 } catch (IllegalArgumentException e) { 656 loge("Error setting defaultDns using " + dns); 657 } 658 659 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 660 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 661 662 mContext = checkNotNull(context, "missing Context"); 663 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 664 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 665 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 666 mKeyStore = KeyStore.getInstance(); 667 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 668 669 try { 670 mPolicyManager.registerListener(mPolicyListener); 671 } catch (RemoteException e) { 672 // ouch, no rules updates means some processes may never get network 673 loge("unable to register INetworkPolicyListener" + e.toString()); 674 } 675 676 final PowerManager powerManager = (PowerManager) context.getSystemService( 677 Context.POWER_SERVICE); 678 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 679 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 680 com.android.internal.R.integer.config_networkTransitionTimeout); 681 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 682 683 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 684 685 // TODO: What is the "correct" way to do determine if this is a wifi only device? 686 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 687 log("wifiOnly=" + wifiOnly); 688 String[] naStrings = context.getResources().getStringArray( 689 com.android.internal.R.array.networkAttributes); 690 for (String naString : naStrings) { 691 try { 692 NetworkConfig n = new NetworkConfig(naString); 693 if (VDBG) log("naString=" + naString + " config=" + n); 694 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 695 loge("Error in networkAttributes - ignoring attempt to define type " + 696 n.type); 697 continue; 698 } 699 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 700 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 701 n.type); 702 continue; 703 } 704 if (mNetConfigs[n.type] != null) { 705 loge("Error in networkAttributes - ignoring attempt to redefine type " + 706 n.type); 707 continue; 708 } 709 mLegacyTypeTracker.addSupportedType(n.type); 710 711 mNetConfigs[n.type] = n; 712 mNetworksDefined++; 713 } catch(Exception e) { 714 // ignore it - leave the entry null 715 } 716 } 717 718 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 719 if (mNetConfigs[TYPE_VPN] == null) { 720 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 721 // don't need to add TYPE_VPN to mNetConfigs. 722 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 723 mNetworksDefined++; // used only in the log() statement below. 724 } 725 726 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 727 728 mProtectedNetworks = new ArrayList<Integer>(); 729 int[] protectedNetworks = context.getResources().getIntArray( 730 com.android.internal.R.array.config_protectedNetworks); 731 for (int p : protectedNetworks) { 732 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 733 mProtectedNetworks.add(p); 734 } else { 735 if (DBG) loge("Ignoring protectedNetwork " + p); 736 } 737 } 738 739 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 740 && SystemProperties.get("ro.build.type").equals("eng"); 741 742 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 743 744 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 745 746 //set up the listener for user state for creating user VPNs 747 IntentFilter intentFilter = new IntentFilter(); 748 intentFilter.addAction(Intent.ACTION_USER_STARTING); 749 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 750 mContext.registerReceiverAsUser( 751 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 752 753 try { 754 mNetd.registerObserver(mTethering); 755 mNetd.registerObserver(mDataActivityObserver); 756 } catch (RemoteException e) { 757 loge("Error registering observer :" + e); 758 } 759 760 if (DBG) { 761 mInetLog = new ArrayList(); 762 } 763 764 mSettingsObserver = new SettingsObserver(mContext, mHandler); 765 registerSettingsCallbacks(); 766 767 mDataConnectionStats = new DataConnectionStats(mContext); 768 mDataConnectionStats.startMonitoring(); 769 770 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 771 772 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 773 774 mKeepaliveTracker = new KeepaliveTracker(mHandler); 775 } 776 777 private NetworkRequest createInternetRequestForTransport(int transportType) { 778 NetworkCapabilities netCap = new NetworkCapabilities(); 779 netCap.addCapability(NET_CAPABILITY_INTERNET); 780 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 781 if (transportType > -1) { 782 netCap.addTransportType(transportType); 783 } 784 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 785 } 786 787 private void handleMobileDataAlwaysOn() { 788 final boolean enable = (Settings.Global.getInt( 789 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 790 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 791 if (enable == isEnabled) { 792 return; // Nothing to do. 793 } 794 795 if (enable) { 796 handleRegisterNetworkRequest(new NetworkRequestInfo( 797 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestInfo.REQUEST)); 798 } else { 799 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 800 } 801 } 802 803 private void registerSettingsCallbacks() { 804 // Watch for global HTTP proxy changes. 805 mSettingsObserver.observe( 806 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 807 EVENT_APPLY_GLOBAL_HTTP_PROXY); 808 809 // Watch for whether or not to keep mobile data always on. 810 mSettingsObserver.observe( 811 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 812 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 813 } 814 815 private synchronized int nextNetworkRequestId() { 816 return mNextNetworkRequestId++; 817 } 818 819 @VisibleForTesting 820 protected int reserveNetId() { 821 synchronized (mNetworkForNetId) { 822 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 823 int netId = mNextNetId; 824 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 825 // Make sure NetID unused. http://b/16815182 826 if (!mNetIdInUse.get(netId)) { 827 mNetIdInUse.put(netId, true); 828 return netId; 829 } 830 } 831 } 832 throw new IllegalStateException("No free netIds"); 833 } 834 835 private NetworkState getFilteredNetworkState(int networkType, int uid) { 836 NetworkInfo info = null; 837 LinkProperties lp = null; 838 NetworkCapabilities nc = null; 839 Network network = null; 840 String subscriberId = null; 841 842 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 843 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 844 if (nai != null) { 845 synchronized (nai) { 846 info = new NetworkInfo(nai.networkInfo); 847 lp = new LinkProperties(nai.linkProperties); 848 nc = new NetworkCapabilities(nai.networkCapabilities); 849 // Network objects are outwardly immutable so there is no point to duplicating. 850 // Duplicating also precludes sharing socket factories and connection pools. 851 network = nai.network; 852 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 853 } 854 info.setType(networkType); 855 } else { 856 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 857 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 858 info.setIsAvailable(true); 859 lp = new LinkProperties(); 860 nc = new NetworkCapabilities(); 861 network = null; 862 } 863 info = getFilteredNetworkInfo(info, lp, uid); 864 } 865 866 return new NetworkState(info, lp, nc, network, subscriberId, null); 867 } 868 869 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 870 if (network == null) { 871 return null; 872 } 873 synchronized (mNetworkForNetId) { 874 return mNetworkForNetId.get(network.netId); 875 } 876 }; 877 878 private Network[] getVpnUnderlyingNetworks(int uid) { 879 if (!mLockdownEnabled) { 880 int user = UserHandle.getUserId(uid); 881 synchronized (mVpns) { 882 Vpn vpn = mVpns.get(user); 883 if (vpn != null && vpn.appliesToUid(uid)) { 884 return vpn.getUnderlyingNetworks(); 885 } 886 } 887 } 888 return null; 889 } 890 891 private NetworkState getUnfilteredActiveNetworkState(int uid) { 892 NetworkInfo info = null; 893 LinkProperties lp = null; 894 NetworkCapabilities nc = null; 895 Network network = null; 896 String subscriberId = null; 897 898 NetworkAgentInfo nai = getDefaultNetwork(); 899 900 final Network[] networks = getVpnUnderlyingNetworks(uid); 901 if (networks != null) { 902 // getUnderlyingNetworks() returns: 903 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 904 // empty array => the VPN explicitly said "no default network". 905 // non-empty array => the VPN specified one or more default networks; we use the 906 // first one. 907 if (networks.length > 0) { 908 nai = getNetworkAgentInfoForNetwork(networks[0]); 909 } else { 910 nai = null; 911 } 912 } 913 914 if (nai != null) { 915 synchronized (nai) { 916 info = new NetworkInfo(nai.networkInfo); 917 lp = new LinkProperties(nai.linkProperties); 918 nc = new NetworkCapabilities(nai.networkCapabilities); 919 // Network objects are outwardly immutable so there is no point to duplicating. 920 // Duplicating also precludes sharing socket factories and connection pools. 921 network = nai.network; 922 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 923 } 924 } 925 926 return new NetworkState(info, lp, nc, network, subscriberId, null); 927 } 928 929 /** 930 * Check if UID should be blocked from using the network with the given LinkProperties. 931 */ 932 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 933 final boolean networkCostly; 934 final int uidRules; 935 936 final String iface = (lp == null ? "" : lp.getInterfaceName()); 937 synchronized (mRulesLock) { 938 networkCostly = mMeteredIfaces.contains(iface); 939 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 940 } 941 942 if ((uidRules & RULE_REJECT_ALL) != 0 943 || (networkCostly && (uidRules & RULE_REJECT_METERED) != 0)) { 944 return true; 945 } 946 947 // no restrictive rules; network is visible 948 return false; 949 } 950 951 /** 952 * Return a filtered {@link NetworkInfo}, potentially marked 953 * {@link DetailedState#BLOCKED} based on 954 * {@link #isNetworkWithLinkPropertiesBlocked}. 955 */ 956 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 957 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 958 // network is blocked; clone and override state 959 info = new NetworkInfo(info); 960 info.setDetailedState(DetailedState.BLOCKED, null, null); 961 if (VDBG) { 962 log("returning Blocked NetworkInfo for ifname=" + 963 lp.getInterfaceName() + ", uid=" + uid); 964 } 965 } 966 if (info != null && mLockdownTracker != null) { 967 info = mLockdownTracker.augmentNetworkInfo(info); 968 if (VDBG) log("returning Locked NetworkInfo"); 969 } 970 return info; 971 } 972 973 /** 974 * Return NetworkInfo for the active (i.e., connected) network interface. 975 * It is assumed that at most one network is active at a time. If more 976 * than one is active, it is indeterminate which will be returned. 977 * @return the info for the active network, or {@code null} if none is 978 * active 979 */ 980 @Override 981 public NetworkInfo getActiveNetworkInfo() { 982 enforceAccessPermission(); 983 final int uid = Binder.getCallingUid(); 984 NetworkState state = getUnfilteredActiveNetworkState(uid); 985 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 986 } 987 988 @Override 989 public Network getActiveNetwork() { 990 enforceAccessPermission(); 991 final int uid = Binder.getCallingUid(); 992 final int user = UserHandle.getUserId(uid); 993 int vpnNetId = NETID_UNSET; 994 synchronized (mVpns) { 995 final Vpn vpn = mVpns.get(user); 996 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 997 } 998 NetworkAgentInfo nai; 999 if (vpnNetId != NETID_UNSET) { 1000 synchronized (mNetworkForNetId) { 1001 nai = mNetworkForNetId.get(vpnNetId); 1002 } 1003 if (nai != null) return nai.network; 1004 } 1005 nai = getDefaultNetwork(); 1006 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 1007 return nai != null ? nai.network : null; 1008 } 1009 1010 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1011 enforceAccessPermission(); 1012 final int uid = Binder.getCallingUid(); 1013 NetworkState state = getUnfilteredActiveNetworkState(uid); 1014 return state.networkInfo; 1015 } 1016 1017 @Override 1018 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1019 enforceConnectivityInternalPermission(); 1020 NetworkState state = getUnfilteredActiveNetworkState(uid); 1021 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1022 } 1023 1024 @Override 1025 public NetworkInfo getNetworkInfo(int networkType) { 1026 enforceAccessPermission(); 1027 final int uid = Binder.getCallingUid(); 1028 if (getVpnUnderlyingNetworks(uid) != null) { 1029 // A VPN is active, so we may need to return one of its underlying networks. This 1030 // information is not available in LegacyTypeTracker, so we have to get it from 1031 // getUnfilteredActiveNetworkState. 1032 NetworkState state = getUnfilteredActiveNetworkState(uid); 1033 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1034 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1035 } 1036 } 1037 NetworkState state = getFilteredNetworkState(networkType, uid); 1038 return state.networkInfo; 1039 } 1040 1041 @Override 1042 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1043 enforceAccessPermission(); 1044 final int uid = Binder.getCallingUid(); 1045 NetworkInfo info = null; 1046 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1047 if (nai != null) { 1048 synchronized (nai) { 1049 info = new NetworkInfo(nai.networkInfo); 1050 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1051 } 1052 } 1053 return info; 1054 } 1055 1056 @Override 1057 public NetworkInfo[] getAllNetworkInfo() { 1058 enforceAccessPermission(); 1059 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1060 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1061 networkType++) { 1062 NetworkInfo info = getNetworkInfo(networkType); 1063 if (info != null) { 1064 result.add(info); 1065 } 1066 } 1067 return result.toArray(new NetworkInfo[result.size()]); 1068 } 1069 1070 @Override 1071 public Network getNetworkForType(int networkType) { 1072 enforceAccessPermission(); 1073 final int uid = Binder.getCallingUid(); 1074 NetworkState state = getFilteredNetworkState(networkType, uid); 1075 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1076 return state.network; 1077 } 1078 return null; 1079 } 1080 1081 @Override 1082 public Network[] getAllNetworks() { 1083 enforceAccessPermission(); 1084 synchronized (mNetworkForNetId) { 1085 final Network[] result = new Network[mNetworkForNetId.size()]; 1086 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1087 result[i] = mNetworkForNetId.valueAt(i).network; 1088 } 1089 return result; 1090 } 1091 } 1092 1093 @Override 1094 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1095 // The basic principle is: if an app's traffic could possibly go over a 1096 // network, without the app doing anything multinetwork-specific, 1097 // (hence, by "default"), then include that network's capabilities in 1098 // the array. 1099 // 1100 // In the normal case, app traffic only goes over the system's default 1101 // network connection, so that's the only network returned. 1102 // 1103 // With a VPN in force, some app traffic may go into the VPN, and thus 1104 // over whatever underlying networks the VPN specifies, while other app 1105 // traffic may go over the system default network (e.g.: a split-tunnel 1106 // VPN, or an app disallowed by the VPN), so the set of networks 1107 // returned includes the VPN's underlying networks and the system 1108 // default. 1109 enforceAccessPermission(); 1110 1111 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1112 1113 NetworkAgentInfo nai = getDefaultNetwork(); 1114 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1115 if (nc != null) { 1116 result.put(nai.network, nc); 1117 } 1118 1119 if (!mLockdownEnabled) { 1120 synchronized (mVpns) { 1121 Vpn vpn = mVpns.get(userId); 1122 if (vpn != null) { 1123 Network[] networks = vpn.getUnderlyingNetworks(); 1124 if (networks != null) { 1125 for (Network network : networks) { 1126 nai = getNetworkAgentInfoForNetwork(network); 1127 nc = getNetworkCapabilitiesInternal(nai); 1128 if (nc != null) { 1129 result.put(network, nc); 1130 } 1131 } 1132 } 1133 } 1134 } 1135 } 1136 1137 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1138 out = result.values().toArray(out); 1139 return out; 1140 } 1141 1142 @Override 1143 public boolean isNetworkSupported(int networkType) { 1144 enforceAccessPermission(); 1145 return mLegacyTypeTracker.isTypeSupported(networkType); 1146 } 1147 1148 /** 1149 * Return LinkProperties for the active (i.e., connected) default 1150 * network interface. It is assumed that at most one default network 1151 * is active at a time. If more than one is active, it is indeterminate 1152 * which will be returned. 1153 * @return the ip properties for the active network, or {@code null} if 1154 * none is active 1155 */ 1156 @Override 1157 public LinkProperties getActiveLinkProperties() { 1158 enforceAccessPermission(); 1159 final int uid = Binder.getCallingUid(); 1160 NetworkState state = getUnfilteredActiveNetworkState(uid); 1161 return state.linkProperties; 1162 } 1163 1164 @Override 1165 public LinkProperties getLinkPropertiesForType(int networkType) { 1166 enforceAccessPermission(); 1167 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1168 if (nai != null) { 1169 synchronized (nai) { 1170 return new LinkProperties(nai.linkProperties); 1171 } 1172 } 1173 return null; 1174 } 1175 1176 // TODO - this should be ALL networks 1177 @Override 1178 public LinkProperties getLinkProperties(Network network) { 1179 enforceAccessPermission(); 1180 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1181 if (nai != null) { 1182 synchronized (nai) { 1183 return new LinkProperties(nai.linkProperties); 1184 } 1185 } 1186 return null; 1187 } 1188 1189 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1190 if (nai != null) { 1191 synchronized (nai) { 1192 if (nai.networkCapabilities != null) { 1193 return new NetworkCapabilities(nai.networkCapabilities); 1194 } 1195 } 1196 } 1197 return null; 1198 } 1199 1200 @Override 1201 public NetworkCapabilities getNetworkCapabilities(Network network) { 1202 enforceAccessPermission(); 1203 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1204 } 1205 1206 @Override 1207 public NetworkState[] getAllNetworkState() { 1208 // Require internal since we're handing out IMSI details 1209 enforceConnectivityInternalPermission(); 1210 1211 final ArrayList<NetworkState> result = Lists.newArrayList(); 1212 for (Network network : getAllNetworks()) { 1213 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1214 if (nai != null) { 1215 synchronized (nai) { 1216 final String subscriberId = (nai.networkMisc != null) 1217 ? nai.networkMisc.subscriberId : null; 1218 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1219 nai.networkCapabilities, network, subscriberId, null)); 1220 } 1221 } 1222 } 1223 return result.toArray(new NetworkState[result.size()]); 1224 } 1225 1226 @Override 1227 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1228 enforceAccessPermission(); 1229 final int uid = Binder.getCallingUid(); 1230 final long token = Binder.clearCallingIdentity(); 1231 try { 1232 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1233 if (state.networkInfo != null) { 1234 try { 1235 return mPolicyManager.getNetworkQuotaInfo(state); 1236 } catch (RemoteException e) { 1237 } 1238 } 1239 return null; 1240 } finally { 1241 Binder.restoreCallingIdentity(token); 1242 } 1243 } 1244 1245 @Override 1246 public boolean isActiveNetworkMetered() { 1247 enforceAccessPermission(); 1248 final int uid = Binder.getCallingUid(); 1249 final long token = Binder.clearCallingIdentity(); 1250 try { 1251 return isActiveNetworkMeteredUnchecked(uid); 1252 } finally { 1253 Binder.restoreCallingIdentity(token); 1254 } 1255 } 1256 1257 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1258 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1259 if (state.networkInfo != null) { 1260 try { 1261 return mPolicyManager.isNetworkMetered(state); 1262 } catch (RemoteException e) { 1263 } 1264 } 1265 return false; 1266 } 1267 1268 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1269 @Override 1270 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1271 int deviceType = Integer.parseInt(label); 1272 sendDataActivityBroadcast(deviceType, active, tsNanos); 1273 } 1274 }; 1275 1276 /** 1277 * Ensure that a network route exists to deliver traffic to the specified 1278 * host via the specified network interface. 1279 * @param networkType the type of the network over which traffic to the 1280 * specified host is to be routed 1281 * @param hostAddress the IP address of the host to which the route is 1282 * desired 1283 * @return {@code true} on success, {@code false} on failure 1284 */ 1285 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1286 enforceChangePermission(); 1287 if (mProtectedNetworks.contains(networkType)) { 1288 enforceConnectivityInternalPermission(); 1289 } 1290 1291 InetAddress addr; 1292 try { 1293 addr = InetAddress.getByAddress(hostAddress); 1294 } catch (UnknownHostException e) { 1295 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1296 return false; 1297 } 1298 1299 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1300 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1301 return false; 1302 } 1303 1304 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1305 if (nai == null) { 1306 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1307 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1308 } else { 1309 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1310 } 1311 return false; 1312 } 1313 1314 DetailedState netState; 1315 synchronized (nai) { 1316 netState = nai.networkInfo.getDetailedState(); 1317 } 1318 1319 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1320 if (VDBG) { 1321 log("requestRouteToHostAddress on down network " 1322 + "(" + networkType + ") - dropped" 1323 + " netState=" + netState); 1324 } 1325 return false; 1326 } 1327 1328 final int uid = Binder.getCallingUid(); 1329 final long token = Binder.clearCallingIdentity(); 1330 try { 1331 LinkProperties lp; 1332 int netId; 1333 synchronized (nai) { 1334 lp = nai.linkProperties; 1335 netId = nai.network.netId; 1336 } 1337 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1338 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1339 return ok; 1340 } finally { 1341 Binder.restoreCallingIdentity(token); 1342 } 1343 } 1344 1345 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1346 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1347 if (bestRoute == null) { 1348 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1349 } else { 1350 String iface = bestRoute.getInterface(); 1351 if (bestRoute.getGateway().equals(addr)) { 1352 // if there is no better route, add the implied hostroute for our gateway 1353 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1354 } else { 1355 // if we will connect to this through another route, add a direct route 1356 // to it's gateway 1357 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1358 } 1359 } 1360 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1361 try { 1362 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1363 } catch (Exception e) { 1364 // never crash - catch them all 1365 if (DBG) loge("Exception trying to add a route: " + e); 1366 return false; 1367 } 1368 return true; 1369 } 1370 1371 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1372 @Override 1373 public void onUidRulesChanged(int uid, int uidRules) { 1374 // caller is NPMS, since we only register with them 1375 if (LOGD_RULES) { 1376 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1377 } 1378 1379 synchronized (mRulesLock) { 1380 // skip update when we've already applied rules 1381 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1382 if (oldRules == uidRules) return; 1383 1384 mUidRules.put(uid, uidRules); 1385 } 1386 1387 // TODO: notify UID when it has requested targeted updates 1388 } 1389 1390 @Override 1391 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1392 // caller is NPMS, since we only register with them 1393 if (LOGD_RULES) { 1394 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1395 } 1396 1397 synchronized (mRulesLock) { 1398 mMeteredIfaces.clear(); 1399 for (String iface : meteredIfaces) { 1400 mMeteredIfaces.add(iface); 1401 } 1402 } 1403 } 1404 1405 @Override 1406 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1407 // caller is NPMS, since we only register with them 1408 if (LOGD_RULES) { 1409 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1410 } 1411 } 1412 }; 1413 1414 /** 1415 * Require that the caller is either in the same user or has appropriate permission to interact 1416 * across users. 1417 * 1418 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1419 */ 1420 private void enforceCrossUserPermission(int userId) { 1421 if (userId == UserHandle.getCallingUserId()) { 1422 // Not a cross-user call. 1423 return; 1424 } 1425 mContext.enforceCallingOrSelfPermission( 1426 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1427 "ConnectivityService"); 1428 } 1429 1430 private void enforceInternetPermission() { 1431 mContext.enforceCallingOrSelfPermission( 1432 android.Manifest.permission.INTERNET, 1433 "ConnectivityService"); 1434 } 1435 1436 private void enforceAccessPermission() { 1437 mContext.enforceCallingOrSelfPermission( 1438 android.Manifest.permission.ACCESS_NETWORK_STATE, 1439 "ConnectivityService"); 1440 } 1441 1442 private void enforceChangePermission() { 1443 mContext.enforceCallingOrSelfPermission( 1444 android.Manifest.permission.CHANGE_NETWORK_STATE, 1445 "ConnectivityService"); 1446 } 1447 1448 private void enforceTetherAccessPermission() { 1449 mContext.enforceCallingOrSelfPermission( 1450 android.Manifest.permission.ACCESS_NETWORK_STATE, 1451 "ConnectivityService"); 1452 } 1453 1454 private void enforceConnectivityInternalPermission() { 1455 mContext.enforceCallingOrSelfPermission( 1456 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1457 "ConnectivityService"); 1458 } 1459 1460 private void enforceKeepalivePermission() { 1461 mContext.enforceCallingPermission(KeepaliveTracker.PERMISSION, "ConnectivityService"); 1462 } 1463 1464 public void sendConnectedBroadcast(NetworkInfo info) { 1465 enforceConnectivityInternalPermission(); 1466 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1467 } 1468 1469 private void sendInetConditionBroadcast(NetworkInfo info) { 1470 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1471 } 1472 1473 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1474 if (mLockdownTracker != null) { 1475 info = mLockdownTracker.augmentNetworkInfo(info); 1476 } 1477 1478 Intent intent = new Intent(bcastType); 1479 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1480 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1481 if (info.isFailover()) { 1482 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1483 info.setFailover(false); 1484 } 1485 if (info.getReason() != null) { 1486 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1487 } 1488 if (info.getExtraInfo() != null) { 1489 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1490 info.getExtraInfo()); 1491 } 1492 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1493 return intent; 1494 } 1495 1496 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1497 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1498 } 1499 1500 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1501 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1502 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1503 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1504 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1505 final long ident = Binder.clearCallingIdentity(); 1506 try { 1507 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1508 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1509 } finally { 1510 Binder.restoreCallingIdentity(ident); 1511 } 1512 } 1513 1514 private void sendStickyBroadcast(Intent intent) { 1515 synchronized(this) { 1516 if (!mSystemReady) { 1517 mInitialBroadcast = new Intent(intent); 1518 } 1519 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1520 if (DBG) { 1521 log("sendStickyBroadcast: action=" + intent.getAction()); 1522 } 1523 1524 final long ident = Binder.clearCallingIdentity(); 1525 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1526 final IBatteryStats bs = BatteryStatsService.getService(); 1527 try { 1528 NetworkInfo ni = intent.getParcelableExtra( 1529 ConnectivityManager.EXTRA_NETWORK_INFO); 1530 bs.noteConnectivityChanged(intent.getIntExtra( 1531 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1532 ni != null ? ni.getState().toString() : "?"); 1533 } catch (RemoteException e) { 1534 } 1535 } 1536 try { 1537 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1538 } finally { 1539 Binder.restoreCallingIdentity(ident); 1540 } 1541 } 1542 } 1543 1544 void systemReady() { 1545 loadGlobalProxy(); 1546 1547 synchronized(this) { 1548 mSystemReady = true; 1549 if (mInitialBroadcast != null) { 1550 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1551 mInitialBroadcast = null; 1552 } 1553 } 1554 // load the global proxy at startup 1555 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1556 1557 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1558 // for user to unlock device. 1559 if (!updateLockdownVpn()) { 1560 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1561 mContext.registerReceiver(mUserPresentReceiver, filter); 1562 } 1563 1564 // Configure whether mobile data is always on. 1565 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1566 1567 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1568 1569 mPermissionMonitor.startMonitoring(); 1570 } 1571 1572 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1573 @Override 1574 public void onReceive(Context context, Intent intent) { 1575 // Try creating lockdown tracker, since user present usually means 1576 // unlocked keystore. 1577 if (updateLockdownVpn()) { 1578 mContext.unregisterReceiver(this); 1579 } 1580 } 1581 }; 1582 1583 /** 1584 * Setup data activity tracking for the given network. 1585 * 1586 * Every {@code setupDataActivityTracking} should be paired with a 1587 * {@link #removeDataActivityTracking} for cleanup. 1588 */ 1589 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1590 final String iface = networkAgent.linkProperties.getInterfaceName(); 1591 1592 final int timeout; 1593 int type = ConnectivityManager.TYPE_NONE; 1594 1595 if (networkAgent.networkCapabilities.hasTransport( 1596 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1597 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1598 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1599 5); 1600 type = ConnectivityManager.TYPE_MOBILE; 1601 } else if (networkAgent.networkCapabilities.hasTransport( 1602 NetworkCapabilities.TRANSPORT_WIFI)) { 1603 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1604 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1605 15); 1606 type = ConnectivityManager.TYPE_WIFI; 1607 } else { 1608 // do not track any other networks 1609 timeout = 0; 1610 } 1611 1612 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1613 try { 1614 mNetd.addIdleTimer(iface, timeout, type); 1615 } catch (Exception e) { 1616 // You shall not crash! 1617 loge("Exception in setupDataActivityTracking " + e); 1618 } 1619 } 1620 } 1621 1622 /** 1623 * Remove data activity tracking when network disconnects. 1624 */ 1625 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1626 final String iface = networkAgent.linkProperties.getInterfaceName(); 1627 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1628 1629 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1630 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1631 try { 1632 // the call fails silently if no idletimer setup for this interface 1633 mNetd.removeIdleTimer(iface); 1634 } catch (Exception e) { 1635 loge("Exception in removeDataActivityTracking " + e); 1636 } 1637 } 1638 } 1639 1640 /** 1641 * Reads the network specific MTU size from reources. 1642 * and set it on it's iface. 1643 */ 1644 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1645 final String iface = newLp.getInterfaceName(); 1646 final int mtu = newLp.getMtu(); 1647 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1648 if (VDBG) log("identical MTU - not setting"); 1649 return; 1650 } 1651 1652 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1653 loge("Unexpected mtu value: " + mtu + ", " + iface); 1654 return; 1655 } 1656 1657 // Cannot set MTU without interface name 1658 if (TextUtils.isEmpty(iface)) { 1659 loge("Setting MTU size with null iface."); 1660 return; 1661 } 1662 1663 try { 1664 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1665 mNetd.setMtu(iface, mtu); 1666 } catch (Exception e) { 1667 Slog.e(TAG, "exception in setMtu()" + e); 1668 } 1669 } 1670 1671 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1672 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1673 1674 // Overridden for testing purposes to avoid writing to SystemProperties. 1675 @VisibleForTesting 1676 protected int getDefaultTcpRwnd() { 1677 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1678 } 1679 1680 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1681 if (isDefaultNetwork(nai) == false) { 1682 return; 1683 } 1684 1685 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1686 String[] values = null; 1687 if (tcpBufferSizes != null) { 1688 values = tcpBufferSizes.split(","); 1689 } 1690 1691 if (values == null || values.length != 6) { 1692 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1693 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1694 values = tcpBufferSizes.split(","); 1695 } 1696 1697 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1698 1699 try { 1700 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1701 1702 final String prefix = "/sys/kernel/ipv4/tcp_"; 1703 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1704 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1705 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1706 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1707 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1708 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1709 mCurrentTcpBufferSizes = tcpBufferSizes; 1710 } catch (IOException e) { 1711 loge("Can't set TCP buffer sizes:" + e); 1712 } 1713 1714 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1715 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1716 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1717 if (rwndValue != 0) { 1718 SystemProperties.set(sysctlKey, rwndValue.toString()); 1719 } 1720 } 1721 1722 private void flushVmDnsCache() { 1723 /* 1724 * Tell the VMs to toss their DNS caches 1725 */ 1726 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1727 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1728 /* 1729 * Connectivity events can happen before boot has completed ... 1730 */ 1731 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1732 final long ident = Binder.clearCallingIdentity(); 1733 try { 1734 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1735 } finally { 1736 Binder.restoreCallingIdentity(ident); 1737 } 1738 } 1739 1740 @Override 1741 public int getRestoreDefaultNetworkDelay(int networkType) { 1742 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1743 NETWORK_RESTORE_DELAY_PROP_NAME); 1744 if(restoreDefaultNetworkDelayStr != null && 1745 restoreDefaultNetworkDelayStr.length() != 0) { 1746 try { 1747 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1748 } catch (NumberFormatException e) { 1749 } 1750 } 1751 // if the system property isn't set, use the value for the apn type 1752 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1753 1754 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1755 (mNetConfigs[networkType] != null)) { 1756 ret = mNetConfigs[networkType].restoreTime; 1757 } 1758 return ret; 1759 } 1760 1761 private boolean argsContain(String[] args, String target) { 1762 for (String arg : args) { 1763 if (arg.equals(target)) return true; 1764 } 1765 return false; 1766 } 1767 1768 @Override 1769 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1770 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1771 if (mContext.checkCallingOrSelfPermission( 1772 android.Manifest.permission.DUMP) 1773 != PackageManager.PERMISSION_GRANTED) { 1774 pw.println("Permission Denial: can't dump ConnectivityService " + 1775 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1776 Binder.getCallingUid()); 1777 return; 1778 } 1779 1780 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1781 if (argsContain(args, "--diag")) { 1782 final long DIAG_TIME_MS = 5000; 1783 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1784 // Start gathering diagnostic information. 1785 netDiags.add(new NetworkDiagnostics( 1786 nai.network, 1787 new LinkProperties(nai.linkProperties), // Must be a copy. 1788 DIAG_TIME_MS)); 1789 } 1790 1791 for (NetworkDiagnostics netDiag : netDiags) { 1792 pw.println(); 1793 netDiag.waitForMeasurements(); 1794 netDiag.dump(pw); 1795 } 1796 1797 return; 1798 } 1799 1800 pw.print("NetworkFactories for:"); 1801 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1802 pw.print(" " + nfi.name); 1803 } 1804 pw.println(); 1805 pw.println(); 1806 1807 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 1808 pw.print("Active default network: "); 1809 if (defaultNai == null) { 1810 pw.println("none"); 1811 } else { 1812 pw.println(defaultNai.network.netId); 1813 } 1814 pw.println(); 1815 1816 pw.println("Current Networks:"); 1817 pw.increaseIndent(); 1818 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1819 pw.println(nai.toString()); 1820 pw.increaseIndent(); 1821 pw.println("Requests:"); 1822 pw.increaseIndent(); 1823 for (int i = 0; i < nai.networkRequests.size(); i++) { 1824 pw.println(nai.networkRequests.valueAt(i).toString()); 1825 } 1826 pw.decreaseIndent(); 1827 pw.println("Lingered:"); 1828 pw.increaseIndent(); 1829 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1830 pw.decreaseIndent(); 1831 pw.decreaseIndent(); 1832 } 1833 pw.decreaseIndent(); 1834 pw.println(); 1835 1836 pw.println("Network Requests:"); 1837 pw.increaseIndent(); 1838 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1839 pw.println(nri.toString()); 1840 } 1841 pw.println(); 1842 pw.decreaseIndent(); 1843 1844 mLegacyTypeTracker.dump(pw); 1845 1846 synchronized (this) { 1847 pw.print("mNetTransitionWakeLock: currently " + 1848 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1849 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1850 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1851 } else { 1852 pw.println(", last requested never"); 1853 } 1854 } 1855 1856 pw.println(); 1857 mTethering.dump(fd, pw, args); 1858 1859 pw.println(); 1860 mKeepaliveTracker.dump(pw); 1861 1862 if (mInetLog != null && mInetLog.size() > 0) { 1863 pw.println(); 1864 pw.println("Inet condition reports:"); 1865 pw.increaseIndent(); 1866 for(int i = 0; i < mInetLog.size(); i++) { 1867 pw.println(mInetLog.get(i)); 1868 } 1869 pw.decreaseIndent(); 1870 } 1871 1872 if (argsContain(args, "--short") == false) { 1873 pw.println(); 1874 synchronized (mValidationLogs) { 1875 pw.println("mValidationLogs (most recent first):"); 1876 for (Pair<Network,ReadOnlyLocalLog> p : mValidationLogs) { 1877 pw.println(p.first); 1878 pw.increaseIndent(); 1879 p.second.dump(fd, pw, args); 1880 pw.decreaseIndent(); 1881 } 1882 } 1883 1884 pw.println(); 1885 pw.println("mNetworkRequestInfoLogs (most recent first):"); 1886 pw.increaseIndent(); 1887 mNetworkRequestInfoLogs.reverseDump(fd, pw, args); 1888 pw.decreaseIndent(); 1889 } 1890 } 1891 1892 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1893 if (nai.network == null) return false; 1894 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1895 if (officialNai != null && officialNai.equals(nai)) return true; 1896 if (officialNai != null || VDBG) { 1897 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1898 " - " + nai); 1899 } 1900 return false; 1901 } 1902 1903 private boolean isRequest(NetworkRequest request) { 1904 return mNetworkRequests.get(request).isRequest; 1905 } 1906 1907 // must be stateless - things change under us. 1908 private class NetworkStateTrackerHandler extends Handler { 1909 public NetworkStateTrackerHandler(Looper looper) { 1910 super(looper); 1911 } 1912 1913 @Override 1914 public void handleMessage(Message msg) { 1915 NetworkInfo info; 1916 switch (msg.what) { 1917 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1918 handleAsyncChannelHalfConnect(msg); 1919 break; 1920 } 1921 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1922 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1923 if (nai != null) nai.asyncChannel.disconnect(); 1924 break; 1925 } 1926 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1927 handleAsyncChannelDisconnected(msg); 1928 break; 1929 } 1930 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1931 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1932 if (nai == null) { 1933 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1934 } else { 1935 final NetworkCapabilities networkCapabilities = 1936 (NetworkCapabilities)msg.obj; 1937 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL) || 1938 networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 1939 Slog.wtf(TAG, "BUG: " + nai + " has CS-managed capability."); 1940 } 1941 if (nai.created && !nai.networkCapabilities.equalImmutableCapabilities( 1942 networkCapabilities)) { 1943 Slog.wtf(TAG, "BUG: " + nai + " changed immutable capabilities: " 1944 + nai.networkCapabilities + " -> " + networkCapabilities); 1945 } 1946 updateCapabilities(nai, networkCapabilities); 1947 } 1948 break; 1949 } 1950 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1951 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1952 if (nai == null) { 1953 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1954 } else { 1955 if (VDBG) { 1956 log("Update of LinkProperties for " + nai.name() + 1957 "; created=" + nai.created); 1958 } 1959 LinkProperties oldLp = nai.linkProperties; 1960 synchronized (nai) { 1961 nai.linkProperties = (LinkProperties)msg.obj; 1962 } 1963 if (nai.created) updateLinkProperties(nai, oldLp); 1964 } 1965 break; 1966 } 1967 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1968 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1969 if (nai == null) { 1970 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1971 break; 1972 } 1973 info = (NetworkInfo) msg.obj; 1974 updateNetworkInfo(nai, info); 1975 break; 1976 } 1977 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1978 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1979 if (nai == null) { 1980 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1981 break; 1982 } 1983 Integer score = (Integer) msg.obj; 1984 if (score != null) updateNetworkScore(nai, score.intValue()); 1985 break; 1986 } 1987 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1988 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1989 if (nai == null) { 1990 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1991 break; 1992 } 1993 try { 1994 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1995 } catch (Exception e) { 1996 // Never crash! 1997 loge("Exception in addVpnUidRanges: " + e); 1998 } 1999 break; 2000 } 2001 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 2002 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2003 if (nai == null) { 2004 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 2005 break; 2006 } 2007 try { 2008 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2009 } catch (Exception e) { 2010 // Never crash! 2011 loge("Exception in removeVpnUidRanges: " + e); 2012 } 2013 break; 2014 } 2015 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 2016 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2017 if (nai == null) { 2018 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 2019 break; 2020 } 2021 if (nai.created && !nai.networkMisc.explicitlySelected) { 2022 loge("ERROR: created network explicitly selected."); 2023 } 2024 nai.networkMisc.explicitlySelected = true; 2025 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 2026 break; 2027 } 2028 case NetworkAgent.EVENT_PACKET_KEEPALIVE: { 2029 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2030 if (nai == null) { 2031 loge("EVENT_PACKET_KEEPALIVE from unknown NetworkAgent"); 2032 break; 2033 } 2034 mKeepaliveTracker.handleEventPacketKeepalive(nai, msg); 2035 break; 2036 } 2037 case NetworkMonitor.EVENT_NETWORK_TESTED: { 2038 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2039 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_TESTED")) { 2040 final boolean valid = 2041 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2042 if (DBG) log(nai.name() + " validation " + (valid ? " passed" : "failed")); 2043 if (valid != nai.lastValidated) { 2044 final int oldScore = nai.getCurrentScore(); 2045 nai.lastValidated = valid; 2046 nai.everValidated |= valid; 2047 updateCapabilities(nai, nai.networkCapabilities); 2048 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2049 if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); 2050 } 2051 updateInetCondition(nai); 2052 // Let the NetworkAgent know the state of its network 2053 nai.asyncChannel.sendMessage( 2054 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2055 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2056 0, null); 2057 } 2058 break; 2059 } 2060 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2061 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2062 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 2063 handleLingerComplete(nai); 2064 } 2065 break; 2066 } 2067 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2068 final int netId = msg.arg2; 2069 final boolean visible = (msg.arg1 != 0); 2070 final NetworkAgentInfo nai; 2071 synchronized (mNetworkForNetId) { 2072 nai = mNetworkForNetId.get(netId); 2073 } 2074 // If captive portal status has changed, update capabilities. 2075 if (nai != null && (visible != nai.lastCaptivePortalDetected)) { 2076 nai.lastCaptivePortalDetected = visible; 2077 nai.everCaptivePortalDetected |= visible; 2078 updateCapabilities(nai, nai.networkCapabilities); 2079 } 2080 if (!visible) { 2081 setProvNotificationVisibleIntent(false, netId, null, 0, null, null, false); 2082 } else { 2083 if (nai == null) { 2084 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2085 break; 2086 } 2087 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2088 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), 2089 (PendingIntent)msg.obj, nai.networkMisc.explicitlySelected); 2090 } 2091 break; 2092 } 2093 } 2094 } 2095 } 2096 2097 private void linger(NetworkAgentInfo nai) { 2098 nai.lingering = true; 2099 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 2100 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 2101 } 2102 2103 // Cancel any lingering so the linger timeout doesn't teardown a network. 2104 // This should be called when a network begins satisfying a NetworkRequest. 2105 // Note: depending on what state the NetworkMonitor is in (e.g., 2106 // if it's awaiting captive portal login, or if validation failed), this 2107 // may trigger a re-evaluation of the network. 2108 private void unlinger(NetworkAgentInfo nai) { 2109 nai.networkLingered.clear(); 2110 if (!nai.lingering) return; 2111 nai.lingering = false; 2112 if (VDBG) log("Canceling linger of " + nai.name()); 2113 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2114 } 2115 2116 private void handleAsyncChannelHalfConnect(Message msg) { 2117 AsyncChannel ac = (AsyncChannel) msg.obj; 2118 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2119 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2120 if (VDBG) log("NetworkFactory connected"); 2121 // A network factory has connected. Send it all current NetworkRequests. 2122 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2123 if (nri.isRequest == false) continue; 2124 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2125 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2126 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2127 } 2128 } else { 2129 loge("Error connecting NetworkFactory"); 2130 mNetworkFactoryInfos.remove(msg.obj); 2131 } 2132 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2133 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2134 if (VDBG) log("NetworkAgent connected"); 2135 // A network agent has requested a connection. Establish the connection. 2136 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2137 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2138 } else { 2139 loge("Error connecting NetworkAgent"); 2140 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2141 if (nai != null) { 2142 final boolean wasDefault = isDefaultNetwork(nai); 2143 synchronized (mNetworkForNetId) { 2144 mNetworkForNetId.remove(nai.network.netId); 2145 mNetIdInUse.delete(nai.network.netId); 2146 } 2147 // Just in case. 2148 mLegacyTypeTracker.remove(nai, wasDefault); 2149 } 2150 } 2151 } 2152 } 2153 2154 private void handleAsyncChannelDisconnected(Message msg) { 2155 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2156 if (nai != null) { 2157 if (DBG) { 2158 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2159 } 2160 // A network agent has disconnected. 2161 // TODO - if we move the logic to the network agent (have them disconnect 2162 // because they lost all their requests or because their score isn't good) 2163 // then they would disconnect organically, report their new state and then 2164 // disconnect the channel. 2165 if (nai.networkInfo.isConnected()) { 2166 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2167 null, null); 2168 } 2169 final boolean wasDefault = isDefaultNetwork(nai); 2170 if (wasDefault) { 2171 mDefaultInetConditionPublished = 0; 2172 } 2173 notifyIfacesChanged(); 2174 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2175 mKeepaliveTracker.handleStopAllKeepalives(nai, 2176 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 2177 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2178 mNetworkAgentInfos.remove(msg.replyTo); 2179 updateClat(null, nai.linkProperties, nai); 2180 synchronized (mNetworkForNetId) { 2181 // Remove the NetworkAgent, but don't mark the netId as 2182 // available until we've told netd to delete it below. 2183 mNetworkForNetId.remove(nai.network.netId); 2184 } 2185 // Remove all previously satisfied requests. 2186 for (int i = 0; i < nai.networkRequests.size(); i++) { 2187 NetworkRequest request = nai.networkRequests.valueAt(i); 2188 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2189 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2190 mNetworkForRequestId.remove(request.requestId); 2191 sendUpdatedScoreToFactories(request, 0); 2192 } 2193 } 2194 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2195 removeDataActivityTracking(nai); 2196 notifyLockdownVpn(nai); 2197 requestNetworkTransitionWakelock(nai.name()); 2198 } 2199 mLegacyTypeTracker.remove(nai, wasDefault); 2200 rematchAllNetworksAndRequests(null, 0); 2201 if (nai.created) { 2202 // Tell netd to clean up the configuration for this network 2203 // (routing rules, DNS, etc). 2204 // This may be slow as it requires a lot of netd shelling out to ip and 2205 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2206 // after we've rematched networks with requests which should make a potential 2207 // fallback network the default or requested a new network from the 2208 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2209 // long time. 2210 try { 2211 mNetd.removeNetwork(nai.network.netId); 2212 } catch (Exception e) { 2213 loge("Exception removing network: " + e); 2214 } 2215 } 2216 synchronized (mNetworkForNetId) { 2217 mNetIdInUse.delete(nai.network.netId); 2218 } 2219 } else { 2220 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2221 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2222 } 2223 } 2224 2225 // If this method proves to be too slow then we can maintain a separate 2226 // pendingIntent => NetworkRequestInfo map. 2227 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2228 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2229 Intent intent = pendingIntent.getIntent(); 2230 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2231 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2232 if (existingPendingIntent != null && 2233 existingPendingIntent.getIntent().filterEquals(intent)) { 2234 return entry.getValue(); 2235 } 2236 } 2237 return null; 2238 } 2239 2240 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2241 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2242 2243 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2244 if (existingRequest != null) { // remove the existing request. 2245 if (DBG) log("Replacing " + existingRequest.request + " with " 2246 + nri.request + " because their intents matched."); 2247 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2248 } 2249 handleRegisterNetworkRequest(nri); 2250 } 2251 2252 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2253 mNetworkRequests.put(nri.request, nri); 2254 mNetworkRequestInfoLogs.log("REGISTER " + nri); 2255 if (!nri.isRequest) { 2256 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2257 if (network.satisfiesImmutableCapabilitiesOf(nri.request)) { 2258 updateSignalStrengthThresholds(network); 2259 } 2260 } 2261 } 2262 rematchAllNetworksAndRequests(null, 0); 2263 if (nri.isRequest && mNetworkForRequestId.get(nri.request.requestId) == null) { 2264 sendUpdatedScoreToFactories(nri.request, 0); 2265 } 2266 } 2267 2268 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2269 int callingUid) { 2270 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2271 if (nri != null) { 2272 handleReleaseNetworkRequest(nri.request, callingUid); 2273 } 2274 } 2275 2276 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2277 // This is whether it is satisfying any NetworkRequests or were it to become validated, 2278 // would it have a chance of satisfying any NetworkRequests. 2279 private boolean unneeded(NetworkAgentInfo nai) { 2280 if (!nai.created || nai.isVPN() || nai.lingering) return false; 2281 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2282 // If this Network is already the highest scoring Network for a request, or if 2283 // there is hope for it to become one if it validated, then it is needed. 2284 if (nri.isRequest && nai.satisfies(nri.request) && 2285 (nai.networkRequests.get(nri.request.requestId) != null || 2286 // Note that this catches two important cases: 2287 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2288 // is currently satisfying the request. This is desirable when 2289 // cellular ends up validating but WiFi does not. 2290 // 2. Unvalidated WiFi will not be reaped when validated cellular 2291 // is currently satsifying the request. This is desirable when 2292 // WiFi ends up validating and out scoring cellular. 2293 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2294 nai.getCurrentScoreAsValidated())) { 2295 return false; 2296 } 2297 } 2298 return true; 2299 } 2300 2301 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2302 NetworkRequestInfo nri = mNetworkRequests.get(request); 2303 if (nri != null) { 2304 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2305 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2306 return; 2307 } 2308 if (DBG) log("releasing NetworkRequest " + request); 2309 nri.unlinkDeathRecipient(); 2310 mNetworkRequests.remove(request); 2311 mNetworkRequestInfoLogs.log("RELEASE " + nri); 2312 if (nri.isRequest) { 2313 // Find all networks that are satisfying this request and remove the request 2314 // from their request lists. 2315 // TODO - it's my understanding that for a request there is only a single 2316 // network satisfying it, so this loop is wasteful 2317 boolean wasKept = false; 2318 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2319 if (nai.networkRequests.get(nri.request.requestId) != null) { 2320 nai.networkRequests.remove(nri.request.requestId); 2321 if (DBG) { 2322 log(" Removing from current network " + nai.name() + 2323 ", leaving " + nai.networkRequests.size() + 2324 " requests."); 2325 } 2326 if (unneeded(nai)) { 2327 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2328 teardownUnneededNetwork(nai); 2329 } else { 2330 // suspect there should only be one pass through here 2331 // but if any were kept do the check below 2332 wasKept |= true; 2333 } 2334 } 2335 } 2336 2337 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2338 if (nai != null) { 2339 mNetworkForRequestId.remove(nri.request.requestId); 2340 } 2341 // Maintain the illusion. When this request arrived, we might have pretended 2342 // that a network connected to serve it, even though the network was already 2343 // connected. Now that this request has gone away, we might have to pretend 2344 // that the network disconnected. LegacyTypeTracker will generate that 2345 // phantom disconnect for this type. 2346 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2347 boolean doRemove = true; 2348 if (wasKept) { 2349 // check if any of the remaining requests for this network are for the 2350 // same legacy type - if so, don't remove the nai 2351 for (int i = 0; i < nai.networkRequests.size(); i++) { 2352 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2353 if (otherRequest.legacyType == nri.request.legacyType && 2354 isRequest(otherRequest)) { 2355 if (DBG) log(" still have other legacy request - leaving"); 2356 doRemove = false; 2357 } 2358 } 2359 } 2360 2361 if (doRemove) { 2362 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2363 } 2364 } 2365 2366 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2367 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2368 nri.request); 2369 } 2370 } else { 2371 // listens don't have a singular affectedNetwork. Check all networks to see 2372 // if this listen request applies and remove it. 2373 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2374 nai.networkRequests.remove(nri.request.requestId); 2375 if (nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 2376 updateSignalStrengthThresholds(nai); 2377 } 2378 } 2379 } 2380 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2381 } 2382 } 2383 2384 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2385 enforceConnectivityInternalPermission(); 2386 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2387 accept ? 1 : 0, always ? 1: 0, network)); 2388 } 2389 2390 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2391 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2392 " accept=" + accept + " always=" + always); 2393 2394 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2395 if (nai == null) { 2396 // Nothing to do. 2397 return; 2398 } 2399 2400 if (nai.everValidated) { 2401 // The network validated while the dialog box was up. Take no action. 2402 return; 2403 } 2404 2405 if (!nai.networkMisc.explicitlySelected) { 2406 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2407 } 2408 2409 if (accept != nai.networkMisc.acceptUnvalidated) { 2410 int oldScore = nai.getCurrentScore(); 2411 nai.networkMisc.acceptUnvalidated = accept; 2412 rematchAllNetworksAndRequests(nai, oldScore); 2413 sendUpdatedScoreToFactories(nai); 2414 } 2415 2416 if (always) { 2417 nai.asyncChannel.sendMessage( 2418 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2419 } 2420 2421 if (!accept) { 2422 // Tell the NetworkAgent to not automatically reconnect to the network. 2423 nai.asyncChannel.sendMessage(NetworkAgent.CMD_PREVENT_AUTOMATIC_RECONNECT); 2424 // Teardown the nework. 2425 teardownUnneededNetwork(nai); 2426 } 2427 2428 } 2429 2430 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2431 if (DBG) log("scheduleUnvalidatedPrompt " + nai.network); 2432 mHandler.sendMessageDelayed( 2433 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2434 PROMPT_UNVALIDATED_DELAY_MS); 2435 } 2436 2437 private void handlePromptUnvalidated(Network network) { 2438 if (DBG) log("handlePromptUnvalidated " + network); 2439 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2440 2441 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2442 // we haven't already been told to switch to it regardless of whether it validated or not. 2443 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2444 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2445 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2446 return; 2447 } 2448 2449 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2450 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2451 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2452 intent.setClassName("com.android.settings", 2453 "com.android.settings.wifi.WifiNoInternetDialog"); 2454 2455 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2456 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2457 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2458 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent, true); 2459 } 2460 2461 private class InternalHandler extends Handler { 2462 public InternalHandler(Looper looper) { 2463 super(looper); 2464 } 2465 2466 @Override 2467 public void handleMessage(Message msg) { 2468 switch (msg.what) { 2469 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2470 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2471 String causedBy = null; 2472 synchronized (ConnectivityService.this) { 2473 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2474 mNetTransitionWakeLock.isHeld()) { 2475 mNetTransitionWakeLock.release(); 2476 causedBy = mNetTransitionWakeLockCausedBy; 2477 } else { 2478 break; 2479 } 2480 } 2481 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2482 log("Failed to find a new network - expiring NetTransition Wakelock"); 2483 } else { 2484 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2485 " cleared because we found a replacement network"); 2486 } 2487 break; 2488 } 2489 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2490 handleDeprecatedGlobalHttpProxy(); 2491 break; 2492 } 2493 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2494 Intent intent = (Intent)msg.obj; 2495 sendStickyBroadcast(intent); 2496 break; 2497 } 2498 case EVENT_PROXY_HAS_CHANGED: { 2499 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2500 break; 2501 } 2502 case EVENT_REGISTER_NETWORK_FACTORY: { 2503 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2504 break; 2505 } 2506 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2507 handleUnregisterNetworkFactory((Messenger)msg.obj); 2508 break; 2509 } 2510 case EVENT_REGISTER_NETWORK_AGENT: { 2511 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2512 break; 2513 } 2514 case EVENT_REGISTER_NETWORK_REQUEST: 2515 case EVENT_REGISTER_NETWORK_LISTENER: { 2516 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2517 break; 2518 } 2519 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2520 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2521 handleRegisterNetworkRequestWithIntent(msg); 2522 break; 2523 } 2524 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2525 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2526 break; 2527 } 2528 case EVENT_RELEASE_NETWORK_REQUEST: { 2529 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2530 break; 2531 } 2532 case EVENT_SET_ACCEPT_UNVALIDATED: { 2533 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2534 break; 2535 } 2536 case EVENT_PROMPT_UNVALIDATED: { 2537 handlePromptUnvalidated((Network) msg.obj); 2538 break; 2539 } 2540 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2541 handleMobileDataAlwaysOn(); 2542 break; 2543 } 2544 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2545 case NetworkAgent.CMD_START_PACKET_KEEPALIVE: { 2546 mKeepaliveTracker.handleStartKeepalive(msg); 2547 break; 2548 } 2549 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2550 case NetworkAgent.CMD_STOP_PACKET_KEEPALIVE: { 2551 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork((Network) msg.obj); 2552 int slot = msg.arg1; 2553 int reason = msg.arg2; 2554 mKeepaliveTracker.handleStopKeepalive(nai, slot, reason); 2555 break; 2556 } 2557 case EVENT_SYSTEM_READY: { 2558 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2559 nai.networkMonitor.systemReady = true; 2560 } 2561 break; 2562 } 2563 } 2564 } 2565 } 2566 2567 // javadoc from interface 2568 public int tether(String iface) { 2569 ConnectivityManager.enforceTetherChangePermission(mContext); 2570 if (isTetheringSupported()) { 2571 return mTethering.tether(iface); 2572 } else { 2573 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2574 } 2575 } 2576 2577 // javadoc from interface 2578 public int untether(String iface) { 2579 ConnectivityManager.enforceTetherChangePermission(mContext); 2580 2581 if (isTetheringSupported()) { 2582 return mTethering.untether(iface); 2583 } else { 2584 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2585 } 2586 } 2587 2588 // javadoc from interface 2589 public int getLastTetherError(String iface) { 2590 enforceTetherAccessPermission(); 2591 2592 if (isTetheringSupported()) { 2593 return mTethering.getLastTetherError(iface); 2594 } else { 2595 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2596 } 2597 } 2598 2599 // TODO - proper iface API for selection by property, inspection, etc 2600 public String[] getTetherableUsbRegexs() { 2601 enforceTetherAccessPermission(); 2602 if (isTetheringSupported()) { 2603 return mTethering.getTetherableUsbRegexs(); 2604 } else { 2605 return new String[0]; 2606 } 2607 } 2608 2609 public String[] getTetherableWifiRegexs() { 2610 enforceTetherAccessPermission(); 2611 if (isTetheringSupported()) { 2612 return mTethering.getTetherableWifiRegexs(); 2613 } else { 2614 return new String[0]; 2615 } 2616 } 2617 2618 public String[] getTetherableBluetoothRegexs() { 2619 enforceTetherAccessPermission(); 2620 if (isTetheringSupported()) { 2621 return mTethering.getTetherableBluetoothRegexs(); 2622 } else { 2623 return new String[0]; 2624 } 2625 } 2626 2627 public int setUsbTethering(boolean enable) { 2628 ConnectivityManager.enforceTetherChangePermission(mContext); 2629 if (isTetheringSupported()) { 2630 return mTethering.setUsbTethering(enable); 2631 } else { 2632 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2633 } 2634 } 2635 2636 // TODO - move iface listing, queries, etc to new module 2637 // javadoc from interface 2638 public String[] getTetherableIfaces() { 2639 enforceTetherAccessPermission(); 2640 return mTethering.getTetherableIfaces(); 2641 } 2642 2643 public String[] getTetheredIfaces() { 2644 enforceTetherAccessPermission(); 2645 return mTethering.getTetheredIfaces(); 2646 } 2647 2648 public String[] getTetheringErroredIfaces() { 2649 enforceTetherAccessPermission(); 2650 return mTethering.getErroredIfaces(); 2651 } 2652 2653 public String[] getTetheredDhcpRanges() { 2654 enforceConnectivityInternalPermission(); 2655 return mTethering.getTetheredDhcpRanges(); 2656 } 2657 2658 // if ro.tether.denied = true we default to no tethering 2659 // gservices could set the secure setting to 1 though to enable it on a build where it 2660 // had previously been turned off. 2661 public boolean isTetheringSupported() { 2662 enforceTetherAccessPermission(); 2663 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2664 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2665 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2666 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2667 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2668 mTethering.getTetherableWifiRegexs().length != 0 || 2669 mTethering.getTetherableBluetoothRegexs().length != 0) && 2670 mTethering.getUpstreamIfaceTypes().length != 0); 2671 } 2672 2673 // Called when we lose the default network and have no replacement yet. 2674 // This will automatically be cleared after X seconds or a new default network 2675 // becomes CONNECTED, whichever happens first. The timer is started by the 2676 // first caller and not restarted by subsequent callers. 2677 private void requestNetworkTransitionWakelock(String forWhom) { 2678 int serialNum = 0; 2679 synchronized (this) { 2680 if (mNetTransitionWakeLock.isHeld()) return; 2681 serialNum = ++mNetTransitionWakeLockSerialNumber; 2682 mNetTransitionWakeLock.acquire(); 2683 mNetTransitionWakeLockCausedBy = forWhom; 2684 } 2685 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2686 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2687 mNetTransitionWakeLockTimeout); 2688 return; 2689 } 2690 2691 // 100 percent is full good, 0 is full bad. 2692 public void reportInetCondition(int networkType, int percentage) { 2693 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2694 if (nai == null) return; 2695 reportNetworkConnectivity(nai.network, percentage > 50); 2696 } 2697 2698 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2699 enforceAccessPermission(); 2700 enforceInternetPermission(); 2701 2702 NetworkAgentInfo nai; 2703 if (network == null) { 2704 nai = getDefaultNetwork(); 2705 } else { 2706 nai = getNetworkAgentInfoForNetwork(network); 2707 } 2708 if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || 2709 nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { 2710 return; 2711 } 2712 // Revalidate if the app report does not match our current validated state. 2713 if (hasConnectivity == nai.lastValidated) return; 2714 final int uid = Binder.getCallingUid(); 2715 if (DBG) { 2716 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2717 ") by " + uid); 2718 } 2719 synchronized (nai) { 2720 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2721 // which isn't meant to work on uncreated networks. 2722 if (!nai.created) return; 2723 2724 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2725 2726 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2727 } 2728 } 2729 2730 private ProxyInfo getDefaultProxy() { 2731 // this information is already available as a world read/writable jvm property 2732 // so this API change wouldn't have a benifit. It also breaks the passing 2733 // of proxy info to all the JVMs. 2734 // enforceAccessPermission(); 2735 synchronized (mProxyLock) { 2736 ProxyInfo ret = mGlobalProxy; 2737 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2738 return ret; 2739 } 2740 } 2741 2742 public ProxyInfo getProxyForNetwork(Network network) { 2743 if (network == null) return getDefaultProxy(); 2744 final ProxyInfo globalProxy = getGlobalProxy(); 2745 if (globalProxy != null) return globalProxy; 2746 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2747 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2748 // caller may not have. 2749 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2750 if (nai == null) return null; 2751 synchronized (nai) { 2752 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2753 if (proxyInfo == null) return null; 2754 return new ProxyInfo(proxyInfo); 2755 } 2756 } 2757 2758 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2759 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2760 // proxy is null then there is no proxy in place). 2761 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2762 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2763 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2764 proxy = null; 2765 } 2766 return proxy; 2767 } 2768 2769 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2770 // better for determining if a new proxy broadcast is necessary: 2771 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2772 // avoid unnecessary broadcasts. 2773 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2774 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2775 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2776 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2777 // all set. 2778 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2779 a = canonicalizeProxyInfo(a); 2780 b = canonicalizeProxyInfo(b); 2781 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2782 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2783 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2784 } 2785 2786 public void setGlobalProxy(ProxyInfo proxyProperties) { 2787 enforceConnectivityInternalPermission(); 2788 2789 synchronized (mProxyLock) { 2790 if (proxyProperties == mGlobalProxy) return; 2791 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2792 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2793 2794 String host = ""; 2795 int port = 0; 2796 String exclList = ""; 2797 String pacFileUrl = ""; 2798 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2799 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2800 if (!proxyProperties.isValid()) { 2801 if (DBG) 2802 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2803 return; 2804 } 2805 mGlobalProxy = new ProxyInfo(proxyProperties); 2806 host = mGlobalProxy.getHost(); 2807 port = mGlobalProxy.getPort(); 2808 exclList = mGlobalProxy.getExclusionListAsString(); 2809 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2810 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2811 } 2812 } else { 2813 mGlobalProxy = null; 2814 } 2815 ContentResolver res = mContext.getContentResolver(); 2816 final long token = Binder.clearCallingIdentity(); 2817 try { 2818 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2819 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2820 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2821 exclList); 2822 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2823 } finally { 2824 Binder.restoreCallingIdentity(token); 2825 } 2826 2827 if (mGlobalProxy == null) { 2828 proxyProperties = mDefaultProxy; 2829 } 2830 sendProxyBroadcast(proxyProperties); 2831 } 2832 } 2833 2834 private void loadGlobalProxy() { 2835 ContentResolver res = mContext.getContentResolver(); 2836 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2837 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2838 String exclList = Settings.Global.getString(res, 2839 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2840 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2841 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2842 ProxyInfo proxyProperties; 2843 if (!TextUtils.isEmpty(pacFileUrl)) { 2844 proxyProperties = new ProxyInfo(pacFileUrl); 2845 } else { 2846 proxyProperties = new ProxyInfo(host, port, exclList); 2847 } 2848 if (!proxyProperties.isValid()) { 2849 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2850 return; 2851 } 2852 2853 synchronized (mProxyLock) { 2854 mGlobalProxy = proxyProperties; 2855 } 2856 } 2857 } 2858 2859 public ProxyInfo getGlobalProxy() { 2860 // this information is already available as a world read/writable jvm property 2861 // so this API change wouldn't have a benifit. It also breaks the passing 2862 // of proxy info to all the JVMs. 2863 // enforceAccessPermission(); 2864 synchronized (mProxyLock) { 2865 return mGlobalProxy; 2866 } 2867 } 2868 2869 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2870 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2871 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2872 proxy = null; 2873 } 2874 synchronized (mProxyLock) { 2875 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2876 if (mDefaultProxy == proxy) return; // catches repeated nulls 2877 if (proxy != null && !proxy.isValid()) { 2878 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2879 return; 2880 } 2881 2882 // This call could be coming from the PacManager, containing the port of the local 2883 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2884 // global (to get the correct local port), and send a broadcast. 2885 // TODO: Switch PacManager to have its own message to send back rather than 2886 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2887 if ((mGlobalProxy != null) && (proxy != null) 2888 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2889 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2890 mGlobalProxy = proxy; 2891 sendProxyBroadcast(mGlobalProxy); 2892 return; 2893 } 2894 mDefaultProxy = proxy; 2895 2896 if (mGlobalProxy != null) return; 2897 if (!mDefaultProxyDisabled) { 2898 sendProxyBroadcast(proxy); 2899 } 2900 } 2901 } 2902 2903 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2904 // This method gets called when any network changes proxy, but the broadcast only ever contains 2905 // the default proxy (even if it hasn't changed). 2906 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2907 // world where an app might be bound to a non-default network. 2908 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2909 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2910 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2911 2912 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2913 sendProxyBroadcast(getDefaultProxy()); 2914 } 2915 } 2916 2917 private void handleDeprecatedGlobalHttpProxy() { 2918 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2919 Settings.Global.HTTP_PROXY); 2920 if (!TextUtils.isEmpty(proxy)) { 2921 String data[] = proxy.split(":"); 2922 if (data.length == 0) { 2923 return; 2924 } 2925 2926 String proxyHost = data[0]; 2927 int proxyPort = 8080; 2928 if (data.length > 1) { 2929 try { 2930 proxyPort = Integer.parseInt(data[1]); 2931 } catch (NumberFormatException e) { 2932 return; 2933 } 2934 } 2935 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2936 setGlobalProxy(p); 2937 } 2938 } 2939 2940 private void sendProxyBroadcast(ProxyInfo proxy) { 2941 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2942 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2943 if (DBG) log("sending Proxy Broadcast for " + proxy); 2944 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2945 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2946 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2947 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2948 final long ident = Binder.clearCallingIdentity(); 2949 try { 2950 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2951 } finally { 2952 Binder.restoreCallingIdentity(ident); 2953 } 2954 } 2955 2956 private static class SettingsObserver extends ContentObserver { 2957 final private HashMap<Uri, Integer> mUriEventMap; 2958 final private Context mContext; 2959 final private Handler mHandler; 2960 2961 SettingsObserver(Context context, Handler handler) { 2962 super(null); 2963 mUriEventMap = new HashMap<Uri, Integer>(); 2964 mContext = context; 2965 mHandler = handler; 2966 } 2967 2968 void observe(Uri uri, int what) { 2969 mUriEventMap.put(uri, what); 2970 final ContentResolver resolver = mContext.getContentResolver(); 2971 resolver.registerContentObserver(uri, false, this); 2972 } 2973 2974 @Override 2975 public void onChange(boolean selfChange) { 2976 Slog.wtf(TAG, "Should never be reached."); 2977 } 2978 2979 @Override 2980 public void onChange(boolean selfChange, Uri uri) { 2981 final Integer what = mUriEventMap.get(uri); 2982 if (what != null) { 2983 mHandler.obtainMessage(what.intValue()).sendToTarget(); 2984 } else { 2985 loge("No matching event to send for URI=" + uri); 2986 } 2987 } 2988 } 2989 2990 private static void log(String s) { 2991 Slog.d(TAG, s); 2992 } 2993 2994 private static void loge(String s) { 2995 Slog.e(TAG, s); 2996 } 2997 2998 private static <T> T checkNotNull(T value, String message) { 2999 if (value == null) { 3000 throw new NullPointerException(message); 3001 } 3002 return value; 3003 } 3004 3005 /** 3006 * Prepare for a VPN application. 3007 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3008 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3009 * 3010 * @param oldPackage Package name of the application which currently controls VPN, which will 3011 * be replaced. If there is no such application, this should should either be 3012 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3013 * @param newPackage Package name of the application which should gain control of VPN, or 3014 * {@code null} to disable. 3015 * @param userId User for whom to prepare the new VPN. 3016 * 3017 * @hide 3018 */ 3019 @Override 3020 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3021 int userId) { 3022 enforceCrossUserPermission(userId); 3023 throwIfLockdownEnabled(); 3024 3025 synchronized(mVpns) { 3026 Vpn vpn = mVpns.get(userId); 3027 if (vpn != null) { 3028 return vpn.prepare(oldPackage, newPackage); 3029 } else { 3030 return false; 3031 } 3032 } 3033 } 3034 3035 /** 3036 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3037 * This method is used by system-privileged apps. 3038 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3039 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3040 * 3041 * @param packageName The package for which authorization state should change. 3042 * @param userId User for whom {@code packageName} is installed. 3043 * @param authorized {@code true} if this app should be able to start a VPN connection without 3044 * explicit user approval, {@code false} if not. 3045 * 3046 * @hide 3047 */ 3048 @Override 3049 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3050 enforceCrossUserPermission(userId); 3051 3052 synchronized(mVpns) { 3053 Vpn vpn = mVpns.get(userId); 3054 if (vpn != null) { 3055 vpn.setPackageAuthorization(packageName, authorized); 3056 } 3057 } 3058 } 3059 3060 /** 3061 * Configure a TUN interface and return its file descriptor. Parameters 3062 * are encoded and opaque to this class. This method is used by VpnBuilder 3063 * and not available in ConnectivityManager. Permissions are checked in 3064 * Vpn class. 3065 * @hide 3066 */ 3067 @Override 3068 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3069 throwIfLockdownEnabled(); 3070 int user = UserHandle.getUserId(Binder.getCallingUid()); 3071 synchronized(mVpns) { 3072 return mVpns.get(user).establish(config); 3073 } 3074 } 3075 3076 /** 3077 * Start legacy VPN, controlling native daemons as needed. Creates a 3078 * secondary thread to perform connection work, returning quickly. 3079 */ 3080 @Override 3081 public void startLegacyVpn(VpnProfile profile) { 3082 throwIfLockdownEnabled(); 3083 final LinkProperties egress = getActiveLinkProperties(); 3084 if (egress == null) { 3085 throw new IllegalStateException("Missing active network connection"); 3086 } 3087 int user = UserHandle.getUserId(Binder.getCallingUid()); 3088 synchronized(mVpns) { 3089 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3090 } 3091 } 3092 3093 /** 3094 * Return the information of the ongoing legacy VPN. This method is used 3095 * by VpnSettings and not available in ConnectivityManager. Permissions 3096 * are checked in Vpn class. 3097 */ 3098 @Override 3099 public LegacyVpnInfo getLegacyVpnInfo(int userId) { 3100 enforceCrossUserPermission(userId); 3101 throwIfLockdownEnabled(); 3102 synchronized(mVpns) { 3103 return mVpns.get(userId).getLegacyVpnInfo(); 3104 } 3105 } 3106 3107 /** 3108 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3109 * and not available in ConnectivityManager. 3110 */ 3111 @Override 3112 public VpnInfo[] getAllVpnInfo() { 3113 enforceConnectivityInternalPermission(); 3114 if (mLockdownEnabled) { 3115 return new VpnInfo[0]; 3116 } 3117 3118 synchronized(mVpns) { 3119 List<VpnInfo> infoList = new ArrayList<>(); 3120 for (int i = 0; i < mVpns.size(); i++) { 3121 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3122 if (info != null) { 3123 infoList.add(info); 3124 } 3125 } 3126 return infoList.toArray(new VpnInfo[infoList.size()]); 3127 } 3128 } 3129 3130 /** 3131 * @return VPN information for accounting, or null if we can't retrieve all required 3132 * information, e.g primary underlying iface. 3133 */ 3134 @Nullable 3135 private VpnInfo createVpnInfo(Vpn vpn) { 3136 VpnInfo info = vpn.getVpnInfo(); 3137 if (info == null) { 3138 return null; 3139 } 3140 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3141 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3142 // the underlyingNetworks list. 3143 if (underlyingNetworks == null) { 3144 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3145 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3146 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3147 } 3148 } else if (underlyingNetworks.length > 0) { 3149 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3150 if (linkProperties != null) { 3151 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3152 } 3153 } 3154 return info.primaryUnderlyingIface == null ? null : info; 3155 } 3156 3157 /** 3158 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3159 * VpnDialogs and not available in ConnectivityManager. 3160 * Permissions are checked in Vpn class. 3161 * @hide 3162 */ 3163 @Override 3164 public VpnConfig getVpnConfig(int userId) { 3165 enforceCrossUserPermission(userId); 3166 synchronized(mVpns) { 3167 Vpn vpn = mVpns.get(userId); 3168 if (vpn != null) { 3169 return vpn.getVpnConfig(); 3170 } else { 3171 return null; 3172 } 3173 } 3174 } 3175 3176 @Override 3177 public boolean updateLockdownVpn() { 3178 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3179 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3180 return false; 3181 } 3182 3183 // Tear down existing lockdown if profile was removed 3184 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3185 if (mLockdownEnabled) { 3186 if (!mKeyStore.isUnlocked()) { 3187 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3188 return false; 3189 } 3190 3191 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3192 final VpnProfile profile = VpnProfile.decode( 3193 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3194 int user = UserHandle.getUserId(Binder.getCallingUid()); 3195 synchronized(mVpns) { 3196 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3197 profile)); 3198 } 3199 } else { 3200 setLockdownTracker(null); 3201 } 3202 3203 return true; 3204 } 3205 3206 /** 3207 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3208 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3209 */ 3210 private void setLockdownTracker(LockdownVpnTracker tracker) { 3211 // Shutdown any existing tracker 3212 final LockdownVpnTracker existing = mLockdownTracker; 3213 mLockdownTracker = null; 3214 if (existing != null) { 3215 existing.shutdown(); 3216 } 3217 3218 try { 3219 if (tracker != null) { 3220 mNetd.setFirewallEnabled(true); 3221 mNetd.setFirewallInterfaceRule("lo", true); 3222 mLockdownTracker = tracker; 3223 mLockdownTracker.init(); 3224 } else { 3225 mNetd.setFirewallEnabled(false); 3226 } 3227 } catch (RemoteException e) { 3228 // ignored; NMS lives inside system_server 3229 } 3230 } 3231 3232 private void throwIfLockdownEnabled() { 3233 if (mLockdownEnabled) { 3234 throw new IllegalStateException("Unavailable in lockdown mode"); 3235 } 3236 } 3237 3238 @Override 3239 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3240 // TODO: Remove? Any reason to trigger a provisioning check? 3241 return -1; 3242 } 3243 3244 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3245 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3246 3247 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3248 if (DBG) { 3249 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3250 + " action=" + action); 3251 } 3252 Intent intent = new Intent(action); 3253 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3254 // Concatenate the range of types onto the range of NetIDs. 3255 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3256 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3257 networkType, null, pendingIntent, false); 3258 } 3259 3260 /** 3261 * Show or hide network provisioning notifications. 3262 * 3263 * We use notifications for two purposes: to notify that a network requires sign in 3264 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3265 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3266 * particular network we can display the notification type that was most recently requested. 3267 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3268 * might first display NO_INTERNET, and then when the captive portal check completes, display 3269 * SIGN_IN. 3270 * 3271 * @param id an identifier that uniquely identifies this notification. This must match 3272 * between show and hide calls. We use the NetID value but for legacy callers 3273 * we concatenate the range of types with the range of NetIDs. 3274 */ 3275 private void setProvNotificationVisibleIntent(boolean visible, int id, 3276 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent, 3277 boolean highPriority) { 3278 if (DBG) { 3279 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3280 + " networkType=" + getNetworkTypeName(networkType) 3281 + " extraInfo=" + extraInfo + " highPriority=" + highPriority); 3282 } 3283 3284 Resources r = Resources.getSystem(); 3285 NotificationManager notificationManager = (NotificationManager) mContext 3286 .getSystemService(Context.NOTIFICATION_SERVICE); 3287 3288 if (visible) { 3289 CharSequence title; 3290 CharSequence details; 3291 int icon; 3292 if (notifyType == NotificationType.NO_INTERNET && 3293 networkType == ConnectivityManager.TYPE_WIFI) { 3294 title = r.getString(R.string.wifi_no_internet, 0); 3295 details = r.getString(R.string.wifi_no_internet_detailed); 3296 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3297 } else if (notifyType == NotificationType.SIGN_IN) { 3298 switch (networkType) { 3299 case ConnectivityManager.TYPE_WIFI: 3300 title = r.getString(R.string.wifi_available_sign_in, 0); 3301 details = r.getString(R.string.network_available_sign_in_detailed, 3302 extraInfo); 3303 icon = R.drawable.stat_notify_wifi_in_range; 3304 break; 3305 case ConnectivityManager.TYPE_MOBILE: 3306 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3307 title = r.getString(R.string.network_available_sign_in, 0); 3308 // TODO: Change this to pull from NetworkInfo once a printable 3309 // name has been added to it 3310 details = mTelephonyManager.getNetworkOperatorName(); 3311 icon = R.drawable.stat_notify_rssi_in_range; 3312 break; 3313 default: 3314 title = r.getString(R.string.network_available_sign_in, 0); 3315 details = r.getString(R.string.network_available_sign_in_detailed, 3316 extraInfo); 3317 icon = R.drawable.stat_notify_rssi_in_range; 3318 break; 3319 } 3320 } else { 3321 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3322 + getNetworkTypeName(networkType)); 3323 return; 3324 } 3325 3326 Notification notification = new Notification.Builder(mContext) 3327 .setWhen(0) 3328 .setSmallIcon(icon) 3329 .setAutoCancel(true) 3330 .setTicker(title) 3331 .setColor(mContext.getColor( 3332 com.android.internal.R.color.system_notification_accent_color)) 3333 .setContentTitle(title) 3334 .setContentText(details) 3335 .setContentIntent(intent) 3336 .setLocalOnly(true) 3337 .setPriority(highPriority ? 3338 Notification.PRIORITY_HIGH : 3339 Notification.PRIORITY_DEFAULT) 3340 .setDefaults(Notification.DEFAULT_ALL) 3341 .setOnlyAlertOnce(true) 3342 .build(); 3343 3344 try { 3345 notificationManager.notify(NOTIFICATION_ID, id, notification); 3346 } catch (NullPointerException npe) { 3347 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3348 npe.printStackTrace(); 3349 } 3350 } else { 3351 try { 3352 notificationManager.cancel(NOTIFICATION_ID, id); 3353 } catch (NullPointerException npe) { 3354 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3355 npe.printStackTrace(); 3356 } 3357 } 3358 } 3359 3360 /** Location to an updatable file listing carrier provisioning urls. 3361 * An example: 3362 * 3363 * <?xml version="1.0" encoding="utf-8"?> 3364 * <provisioningUrls> 3365 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3366 * </provisioningUrls> 3367 */ 3368 private static final String PROVISIONING_URL_PATH = 3369 "/data/misc/radio/provisioning_urls.xml"; 3370 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3371 3372 /** XML tag for root element. */ 3373 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3374 /** XML tag for individual url */ 3375 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3376 /** XML attribute for mcc */ 3377 private static final String ATTR_MCC = "mcc"; 3378 /** XML attribute for mnc */ 3379 private static final String ATTR_MNC = "mnc"; 3380 3381 private String getProvisioningUrlBaseFromFile() { 3382 FileReader fileReader = null; 3383 XmlPullParser parser = null; 3384 Configuration config = mContext.getResources().getConfiguration(); 3385 3386 try { 3387 fileReader = new FileReader(mProvisioningUrlFile); 3388 parser = Xml.newPullParser(); 3389 parser.setInput(fileReader); 3390 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3391 3392 while (true) { 3393 XmlUtils.nextElement(parser); 3394 3395 String element = parser.getName(); 3396 if (element == null) break; 3397 3398 if (element.equals(TAG_PROVISIONING_URL)) { 3399 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3400 try { 3401 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3402 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3403 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3404 parser.next(); 3405 if (parser.getEventType() == XmlPullParser.TEXT) { 3406 return parser.getText(); 3407 } 3408 } 3409 } 3410 } catch (NumberFormatException e) { 3411 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3412 } 3413 } 3414 } 3415 return null; 3416 } catch (FileNotFoundException e) { 3417 loge("Carrier Provisioning Urls file not found"); 3418 } catch (XmlPullParserException e) { 3419 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3420 } catch (IOException e) { 3421 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3422 } finally { 3423 if (fileReader != null) { 3424 try { 3425 fileReader.close(); 3426 } catch (IOException e) {} 3427 } 3428 } 3429 return null; 3430 } 3431 3432 @Override 3433 public String getMobileProvisioningUrl() { 3434 enforceConnectivityInternalPermission(); 3435 String url = getProvisioningUrlBaseFromFile(); 3436 if (TextUtils.isEmpty(url)) { 3437 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3438 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3439 } else { 3440 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3441 } 3442 // populate the iccid, imei and phone number in the provisioning url. 3443 if (!TextUtils.isEmpty(url)) { 3444 String phoneNumber = mTelephonyManager.getLine1Number(); 3445 if (TextUtils.isEmpty(phoneNumber)) { 3446 phoneNumber = "0000000000"; 3447 } 3448 url = String.format(url, 3449 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3450 mTelephonyManager.getDeviceId() /* IMEI */, 3451 phoneNumber /* Phone numer */); 3452 } 3453 3454 return url; 3455 } 3456 3457 @Override 3458 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3459 String action) { 3460 enforceConnectivityInternalPermission(); 3461 final long ident = Binder.clearCallingIdentity(); 3462 try { 3463 setProvNotificationVisible(visible, networkType, action); 3464 } finally { 3465 Binder.restoreCallingIdentity(ident); 3466 } 3467 } 3468 3469 @Override 3470 public void setAirplaneMode(boolean enable) { 3471 enforceConnectivityInternalPermission(); 3472 final long ident = Binder.clearCallingIdentity(); 3473 try { 3474 final ContentResolver cr = mContext.getContentResolver(); 3475 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3476 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3477 intent.putExtra("state", enable); 3478 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3479 } finally { 3480 Binder.restoreCallingIdentity(ident); 3481 } 3482 } 3483 3484 private void onUserStart(int userId) { 3485 synchronized(mVpns) { 3486 Vpn userVpn = mVpns.get(userId); 3487 if (userVpn != null) { 3488 loge("Starting user already has a VPN"); 3489 return; 3490 } 3491 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3492 mVpns.put(userId, userVpn); 3493 } 3494 } 3495 3496 private void onUserStop(int userId) { 3497 synchronized(mVpns) { 3498 Vpn userVpn = mVpns.get(userId); 3499 if (userVpn == null) { 3500 loge("Stopping user has no VPN"); 3501 return; 3502 } 3503 mVpns.delete(userId); 3504 } 3505 } 3506 3507 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3508 @Override 3509 public void onReceive(Context context, Intent intent) { 3510 final String action = intent.getAction(); 3511 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3512 if (userId == UserHandle.USER_NULL) return; 3513 3514 if (Intent.ACTION_USER_STARTING.equals(action)) { 3515 onUserStart(userId); 3516 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3517 onUserStop(userId); 3518 } 3519 } 3520 }; 3521 3522 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3523 new HashMap<Messenger, NetworkFactoryInfo>(); 3524 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3525 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3526 3527 private static class NetworkFactoryInfo { 3528 public final String name; 3529 public final Messenger messenger; 3530 public final AsyncChannel asyncChannel; 3531 3532 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3533 this.name = name; 3534 this.messenger = messenger; 3535 this.asyncChannel = asyncChannel; 3536 } 3537 } 3538 3539 /** 3540 * Tracks info about the requester. 3541 * Also used to notice when the calling process dies so we can self-expire 3542 */ 3543 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3544 static final boolean REQUEST = true; 3545 static final boolean LISTEN = false; 3546 3547 final NetworkRequest request; 3548 final PendingIntent mPendingIntent; 3549 boolean mPendingIntentSent; 3550 private final IBinder mBinder; 3551 final int mPid; 3552 final int mUid; 3553 final Messenger messenger; 3554 final boolean isRequest; 3555 3556 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3557 request = r; 3558 mPendingIntent = pi; 3559 messenger = null; 3560 mBinder = null; 3561 mPid = getCallingPid(); 3562 mUid = getCallingUid(); 3563 this.isRequest = isRequest; 3564 } 3565 3566 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3567 super(); 3568 messenger = m; 3569 request = r; 3570 mBinder = binder; 3571 mPid = getCallingPid(); 3572 mUid = getCallingUid(); 3573 this.isRequest = isRequest; 3574 mPendingIntent = null; 3575 3576 try { 3577 mBinder.linkToDeath(this, 0); 3578 } catch (RemoteException e) { 3579 binderDied(); 3580 } 3581 } 3582 3583 void unlinkDeathRecipient() { 3584 if (mBinder != null) { 3585 mBinder.unlinkToDeath(this, 0); 3586 } 3587 } 3588 3589 public void binderDied() { 3590 log("ConnectivityService NetworkRequestInfo binderDied(" + 3591 request + ", " + mBinder + ")"); 3592 releaseNetworkRequest(request); 3593 } 3594 3595 public String toString() { 3596 return (isRequest ? "Request" : "Listen") + 3597 " from uid/pid:" + mUid + "/" + mPid + 3598 " for " + request + 3599 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3600 } 3601 } 3602 3603 private void ensureRequestableCapabilities(NetworkCapabilities networkCapabilities) { 3604 final String badCapability = networkCapabilities.describeFirstNonRequestableCapability(); 3605 if (badCapability != null) { 3606 throw new IllegalArgumentException("Cannot request network with " + badCapability); 3607 } 3608 } 3609 3610 private ArrayList<Integer> getSignalStrengthThresholds(NetworkAgentInfo nai) { 3611 final SortedSet<Integer> thresholds = new TreeSet(); 3612 synchronized (nai) { 3613 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3614 if (nri.request.networkCapabilities.hasSignalStrength() && 3615 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 3616 thresholds.add(nri.request.networkCapabilities.getSignalStrength()); 3617 } 3618 } 3619 } 3620 return new ArrayList<Integer>(thresholds); 3621 } 3622 3623 private void updateSignalStrengthThresholds(NetworkAgentInfo nai) { 3624 Bundle thresholds = new Bundle(); 3625 thresholds.putIntegerArrayList("thresholds", getSignalStrengthThresholds(nai)); 3626 nai.asyncChannel.sendMessage( 3627 android.net.NetworkAgent.CMD_SET_SIGNAL_STRENGTH_THRESHOLDS, 3628 0, 0, thresholds); 3629 } 3630 3631 @Override 3632 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3633 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3634 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3635 enforceNetworkRequestPermissions(networkCapabilities); 3636 enforceMeteredApnPolicy(networkCapabilities); 3637 ensureRequestableCapabilities(networkCapabilities); 3638 3639 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3640 throw new IllegalArgumentException("Bad timeout specified"); 3641 } 3642 3643 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3644 nextNetworkRequestId()); 3645 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3646 NetworkRequestInfo.REQUEST); 3647 if (DBG) log("requestNetwork for " + nri); 3648 3649 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3650 if (timeoutMs > 0) { 3651 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3652 nri), timeoutMs); 3653 } 3654 return networkRequest; 3655 } 3656 3657 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3658 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3659 enforceConnectivityInternalPermission(); 3660 } else { 3661 enforceChangePermission(); 3662 } 3663 } 3664 3665 @Override 3666 public boolean requestBandwidthUpdate(Network network) { 3667 enforceAccessPermission(); 3668 NetworkAgentInfo nai = null; 3669 if (network == null) { 3670 return false; 3671 } 3672 synchronized (mNetworkForNetId) { 3673 nai = mNetworkForNetId.get(network.netId); 3674 } 3675 if (nai != null) { 3676 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3677 return true; 3678 } 3679 return false; 3680 } 3681 3682 3683 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3684 // if UID is restricted, don't allow them to bring up metered APNs 3685 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3686 final int uidRules; 3687 final int uid = Binder.getCallingUid(); 3688 synchronized(mRulesLock) { 3689 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3690 } 3691 if ((uidRules & (RULE_REJECT_METERED | RULE_REJECT_ALL)) != 0) { 3692 // we could silently fail or we can filter the available nets to only give 3693 // them those they have access to. Chose the more useful 3694 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3695 } 3696 } 3697 } 3698 3699 @Override 3700 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3701 PendingIntent operation) { 3702 checkNotNull(operation, "PendingIntent cannot be null."); 3703 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3704 enforceNetworkRequestPermissions(networkCapabilities); 3705 enforceMeteredApnPolicy(networkCapabilities); 3706 ensureRequestableCapabilities(networkCapabilities); 3707 3708 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3709 nextNetworkRequestId()); 3710 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3711 NetworkRequestInfo.REQUEST); 3712 if (DBG) log("pendingRequest for " + nri); 3713 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3714 nri)); 3715 return networkRequest; 3716 } 3717 3718 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3719 mHandler.sendMessageDelayed( 3720 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3721 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3722 } 3723 3724 @Override 3725 public void releasePendingNetworkRequest(PendingIntent operation) { 3726 checkNotNull(operation, "PendingIntent cannot be null."); 3727 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3728 getCallingUid(), 0, operation)); 3729 } 3730 3731 // In order to implement the compatibility measure for pre-M apps that call 3732 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3733 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3734 // This ensures it has permission to do so. 3735 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3736 if (nc == null) { 3737 return false; 3738 } 3739 int[] transportTypes = nc.getTransportTypes(); 3740 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3741 return false; 3742 } 3743 try { 3744 mContext.enforceCallingOrSelfPermission( 3745 android.Manifest.permission.ACCESS_WIFI_STATE, 3746 "ConnectivityService"); 3747 } catch (SecurityException e) { 3748 return false; 3749 } 3750 return true; 3751 } 3752 3753 @Override 3754 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3755 Messenger messenger, IBinder binder) { 3756 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3757 enforceAccessPermission(); 3758 } 3759 3760 NetworkRequest networkRequest = new NetworkRequest( 3761 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3762 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3763 NetworkRequestInfo.LISTEN); 3764 if (DBG) log("listenForNetwork for " + nri); 3765 3766 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3767 return networkRequest; 3768 } 3769 3770 @Override 3771 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3772 PendingIntent operation) { 3773 checkNotNull(operation, "PendingIntent cannot be null."); 3774 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3775 enforceAccessPermission(); 3776 } 3777 3778 NetworkRequest networkRequest = new NetworkRequest( 3779 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3780 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3781 NetworkRequestInfo.LISTEN); 3782 if (DBG) log("pendingListenForNetwork for " + nri); 3783 3784 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3785 } 3786 3787 @Override 3788 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3789 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3790 0, networkRequest)); 3791 } 3792 3793 @Override 3794 public void registerNetworkFactory(Messenger messenger, String name) { 3795 enforceConnectivityInternalPermission(); 3796 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3797 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3798 } 3799 3800 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3801 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3802 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3803 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3804 } 3805 3806 @Override 3807 public void unregisterNetworkFactory(Messenger messenger) { 3808 enforceConnectivityInternalPermission(); 3809 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3810 } 3811 3812 private void handleUnregisterNetworkFactory(Messenger messenger) { 3813 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3814 if (nfi == null) { 3815 loge("Failed to find Messenger in unregisterNetworkFactory"); 3816 return; 3817 } 3818 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3819 } 3820 3821 /** 3822 * NetworkAgentInfo supporting a request by requestId. 3823 * These have already been vetted (their Capabilities satisfy the request) 3824 * and the are the highest scored network available. 3825 * the are keyed off the Requests requestId. 3826 */ 3827 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 3828 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3829 new SparseArray<NetworkAgentInfo>(); 3830 3831 // NOTE: Accessed on multiple threads, must be synchronized on itself. 3832 @GuardedBy("mNetworkForNetId") 3833 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3834 new SparseArray<NetworkAgentInfo>(); 3835 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 3836 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 3837 // there may not be a strict 1:1 correlation between the two. 3838 @GuardedBy("mNetworkForNetId") 3839 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 3840 3841 // NetworkAgentInfo keyed off its connecting messenger 3842 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3843 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 3844 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3845 new HashMap<Messenger, NetworkAgentInfo>(); 3846 3847 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3848 private final NetworkRequest mDefaultRequest; 3849 3850 // Request used to optionally keep mobile data active even when higher 3851 // priority networks like Wi-Fi are active. 3852 private final NetworkRequest mDefaultMobileDataRequest; 3853 3854 private NetworkAgentInfo getDefaultNetwork() { 3855 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3856 } 3857 3858 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3859 return nai == getDefaultNetwork(); 3860 } 3861 3862 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3863 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3864 int currentScore, NetworkMisc networkMisc) { 3865 enforceConnectivityInternalPermission(); 3866 3867 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3868 // satisfies mDefaultRequest. 3869 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3870 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 3871 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 3872 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest); 3873 synchronized (this) { 3874 nai.networkMonitor.systemReady = mSystemReady; 3875 } 3876 addValidationLogs(nai.networkMonitor.getValidationLogs(), nai.network); 3877 if (DBG) log("registerNetworkAgent " + nai); 3878 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3879 return nai.network.netId; 3880 } 3881 3882 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3883 if (VDBG) log("Got NetworkAgent Messenger"); 3884 mNetworkAgentInfos.put(na.messenger, na); 3885 synchronized (mNetworkForNetId) { 3886 mNetworkForNetId.put(na.network.netId, na); 3887 } 3888 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3889 NetworkInfo networkInfo = na.networkInfo; 3890 na.networkInfo = null; 3891 updateNetworkInfo(na, networkInfo); 3892 } 3893 3894 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3895 LinkProperties newLp = networkAgent.linkProperties; 3896 int netId = networkAgent.network.netId; 3897 3898 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3899 // we do anything else, make sure its LinkProperties are accurate. 3900 if (networkAgent.clatd != null) { 3901 networkAgent.clatd.fixupLinkProperties(oldLp); 3902 } 3903 3904 updateInterfaces(newLp, oldLp, netId); 3905 updateMtu(newLp, oldLp); 3906 // TODO - figure out what to do for clat 3907// for (LinkProperties lp : newLp.getStackedLinks()) { 3908// updateMtu(lp, null); 3909// } 3910 updateTcpBufferSizes(networkAgent); 3911 3912 // TODO: deprecate and remove mDefaultDns when we can do so safely. See http://b/18327075 3913 // In L, we used it only when the network had Internet access but provided no DNS servers. 3914 // For now, just disable it, and if disabling it doesn't break things, remove it. 3915 // final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3916 // NET_CAPABILITY_INTERNET); 3917 final boolean useDefaultDns = false; 3918 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3919 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3920 3921 updateClat(newLp, oldLp, networkAgent); 3922 if (isDefaultNetwork(networkAgent)) { 3923 handleApplyDefaultProxy(newLp.getHttpProxy()); 3924 } else { 3925 updateProxy(newLp, oldLp, networkAgent); 3926 } 3927 // TODO - move this check to cover the whole function 3928 if (!Objects.equals(newLp, oldLp)) { 3929 notifyIfacesChanged(); 3930 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3931 } 3932 3933 mKeepaliveTracker.handleCheckKeepalivesStillValid(networkAgent); 3934 } 3935 3936 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3937 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3938 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3939 3940 if (!wasRunningClat && shouldRunClat) { 3941 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3942 nai.clatd.start(); 3943 } else if (wasRunningClat && !shouldRunClat) { 3944 nai.clatd.stop(); 3945 } 3946 } 3947 3948 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3949 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3950 if (oldLp != null) { 3951 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3952 } else if (newLp != null) { 3953 interfaceDiff.added = newLp.getAllInterfaceNames(); 3954 } 3955 for (String iface : interfaceDiff.added) { 3956 try { 3957 if (DBG) log("Adding iface " + iface + " to network " + netId); 3958 mNetd.addInterfaceToNetwork(iface, netId); 3959 } catch (Exception e) { 3960 loge("Exception adding interface: " + e); 3961 } 3962 } 3963 for (String iface : interfaceDiff.removed) { 3964 try { 3965 if (DBG) log("Removing iface " + iface + " from network " + netId); 3966 mNetd.removeInterfaceFromNetwork(iface, netId); 3967 } catch (Exception e) { 3968 loge("Exception removing interface: " + e); 3969 } 3970 } 3971 } 3972 3973 /** 3974 * Have netd update routes from oldLp to newLp. 3975 * @return true if routes changed between oldLp and newLp 3976 */ 3977 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3978 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3979 if (oldLp != null) { 3980 routeDiff = oldLp.compareAllRoutes(newLp); 3981 } else if (newLp != null) { 3982 routeDiff.added = newLp.getAllRoutes(); 3983 } 3984 3985 // add routes before removing old in case it helps with continuous connectivity 3986 3987 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3988 for (RouteInfo route : routeDiff.added) { 3989 if (route.hasGateway()) continue; 3990 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3991 try { 3992 mNetd.addRoute(netId, route); 3993 } catch (Exception e) { 3994 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3995 loge("Exception in addRoute for non-gateway: " + e); 3996 } 3997 } 3998 } 3999 for (RouteInfo route : routeDiff.added) { 4000 if (route.hasGateway() == false) continue; 4001 if (DBG) log("Adding Route [" + route + "] to network " + netId); 4002 try { 4003 mNetd.addRoute(netId, route); 4004 } catch (Exception e) { 4005 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4006 loge("Exception in addRoute for gateway: " + e); 4007 } 4008 } 4009 } 4010 4011 for (RouteInfo route : routeDiff.removed) { 4012 if (DBG) log("Removing Route [" + route + "] from network " + netId); 4013 try { 4014 mNetd.removeRoute(netId, route); 4015 } catch (Exception e) { 4016 loge("Exception in removeRoute: " + e); 4017 } 4018 } 4019 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4020 } 4021 4022 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 4023 boolean flush, boolean useDefaultDns) { 4024 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 4025 Collection<InetAddress> dnses = newLp.getDnsServers(); 4026 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 4027 dnses = new ArrayList(); 4028 dnses.add(mDefaultDns); 4029 if (DBG) { 4030 loge("no dns provided for netId " + netId + ", so using defaults"); 4031 } 4032 } 4033 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 4034 try { 4035 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 4036 newLp.getDomains()); 4037 } catch (Exception e) { 4038 loge("Exception in setDnsServersForNetwork: " + e); 4039 } 4040 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 4041 if (defaultNai != null && defaultNai.network.netId == netId) { 4042 setDefaultDnsSystemProperties(dnses); 4043 } 4044 flushVmDnsCache(); 4045 } else if (flush) { 4046 try { 4047 mNetd.flushNetworkDnsCache(netId); 4048 } catch (Exception e) { 4049 loge("Exception in flushNetworkDnsCache: " + e); 4050 } 4051 flushVmDnsCache(); 4052 } 4053 } 4054 4055 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4056 int last = 0; 4057 for (InetAddress dns : dnses) { 4058 ++last; 4059 String key = "net.dns" + last; 4060 String value = dns.getHostAddress(); 4061 SystemProperties.set(key, value); 4062 } 4063 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4064 String key = "net.dns" + i; 4065 SystemProperties.set(key, ""); 4066 } 4067 mNumDnsEntries = last; 4068 } 4069 4070 /** 4071 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 4072 * augmented with any stateful capabilities implied from {@code networkAgent} 4073 * (e.g., validated status and captive portal status). 4074 * 4075 * @param nai the network having its capabilities updated. 4076 * @param networkCapabilities the new network capabilities. 4077 */ 4078 private void updateCapabilities(NetworkAgentInfo nai, NetworkCapabilities networkCapabilities) { 4079 // Don't modify caller's NetworkCapabilities. 4080 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4081 if (nai.lastValidated) { 4082 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4083 } else { 4084 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4085 } 4086 if (nai.lastCaptivePortalDetected) { 4087 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4088 } else { 4089 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4090 } 4091 if (!Objects.equals(nai.networkCapabilities, networkCapabilities)) { 4092 final int oldScore = nai.getCurrentScore(); 4093 synchronized (nai) { 4094 nai.networkCapabilities = networkCapabilities; 4095 } 4096 rematchAllNetworksAndRequests(nai, oldScore); 4097 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 4098 } 4099 } 4100 4101 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4102 for (int i = 0; i < nai.networkRequests.size(); i++) { 4103 NetworkRequest nr = nai.networkRequests.valueAt(i); 4104 // Don't send listening requests to factories. b/17393458 4105 if (!isRequest(nr)) continue; 4106 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4107 } 4108 } 4109 4110 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4111 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4112 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4113 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4114 networkRequest); 4115 } 4116 } 4117 4118 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4119 int notificationType) { 4120 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4121 Intent intent = new Intent(); 4122 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4123 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4124 nri.mPendingIntentSent = true; 4125 sendIntent(nri.mPendingIntent, intent); 4126 } 4127 // else not handled 4128 } 4129 4130 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4131 mPendingIntentWakeLock.acquire(); 4132 try { 4133 if (DBG) log("Sending " + pendingIntent); 4134 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4135 } catch (PendingIntent.CanceledException e) { 4136 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4137 mPendingIntentWakeLock.release(); 4138 releasePendingNetworkRequest(pendingIntent); 4139 } 4140 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4141 } 4142 4143 @Override 4144 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4145 String resultData, Bundle resultExtras) { 4146 if (DBG) log("Finished sending " + pendingIntent); 4147 mPendingIntentWakeLock.release(); 4148 // Release with a delay so the receiving client has an opportunity to put in its 4149 // own request. 4150 releasePendingNetworkRequestWithDelay(pendingIntent); 4151 } 4152 4153 private void callCallbackForRequest(NetworkRequestInfo nri, 4154 NetworkAgentInfo networkAgent, int notificationType) { 4155 if (nri.messenger == null) return; // Default request has no msgr 4156 Bundle bundle = new Bundle(); 4157 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4158 new NetworkRequest(nri.request)); 4159 Message msg = Message.obtain(); 4160 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4161 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4162 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4163 } 4164 switch (notificationType) { 4165 case ConnectivityManager.CALLBACK_LOSING: { 4166 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4167 break; 4168 } 4169 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4170 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4171 new NetworkCapabilities(networkAgent.networkCapabilities)); 4172 break; 4173 } 4174 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4175 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4176 new LinkProperties(networkAgent.linkProperties)); 4177 break; 4178 } 4179 } 4180 msg.what = notificationType; 4181 msg.setData(bundle); 4182 try { 4183 if (VDBG) { 4184 log("sending notification " + notifyTypeToName(notificationType) + 4185 " for " + nri.request); 4186 } 4187 nri.messenger.send(msg); 4188 } catch (RemoteException e) { 4189 // may occur naturally in the race of binder death. 4190 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4191 } 4192 } 4193 4194 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4195 for (int i = 0; i < nai.networkRequests.size(); i++) { 4196 NetworkRequest nr = nai.networkRequests.valueAt(i); 4197 // Ignore listening requests. 4198 if (!isRequest(nr)) continue; 4199 loge("Dead network still had at least " + nr); 4200 break; 4201 } 4202 nai.asyncChannel.disconnect(); 4203 } 4204 4205 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4206 if (oldNetwork == null) { 4207 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4208 return; 4209 } 4210 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4211 teardownUnneededNetwork(oldNetwork); 4212 } 4213 4214 private void makeDefault(NetworkAgentInfo newNetwork) { 4215 if (DBG) log("Switching to new default network: " + newNetwork); 4216 setupDataActivityTracking(newNetwork); 4217 try { 4218 mNetd.setDefaultNetId(newNetwork.network.netId); 4219 } catch (Exception e) { 4220 loge("Exception setting default network :" + e); 4221 } 4222 notifyLockdownVpn(newNetwork); 4223 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4224 updateTcpBufferSizes(newNetwork); 4225 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4226 } 4227 4228 // Handles a network appearing or improving its score. 4229 // 4230 // - Evaluates all current NetworkRequests that can be 4231 // satisfied by newNetwork, and reassigns to newNetwork 4232 // any such requests for which newNetwork is the best. 4233 // 4234 // - Lingers any validated Networks that as a result are no longer 4235 // needed. A network is needed if it is the best network for 4236 // one or more NetworkRequests, or if it is a VPN. 4237 // 4238 // - Tears down newNetwork if it just became validated 4239 // but turns out to be unneeded. 4240 // 4241 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4242 // networks that have no chance (i.e. even if validated) 4243 // of becoming the highest scoring network. 4244 // 4245 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4246 // it does not remove NetworkRequests that other Networks could better satisfy. 4247 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4248 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4249 // as it performs better by a factor of the number of Networks. 4250 // 4251 // @param newNetwork is the network to be matched against NetworkRequests. 4252 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4253 // performed to tear down unvalidated networks that have no chance (i.e. even if 4254 // validated) of becoming the highest scoring network. 4255 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, 4256 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4257 if (!newNetwork.created) return; 4258 boolean keep = newNetwork.isVPN(); 4259 boolean isNewDefault = false; 4260 NetworkAgentInfo oldDefaultNetwork = null; 4261 if (DBG) log("rematching " + newNetwork.name()); 4262 // Find and migrate to this Network any NetworkRequests for 4263 // which this network is now the best. 4264 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4265 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4266 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4267 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4268 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4269 if (newNetwork == currentNetwork) { 4270 if (VDBG) { 4271 log("Network " + newNetwork.name() + " was already satisfying" + 4272 " request " + nri.request.requestId + ". No change."); 4273 } 4274 keep = true; 4275 continue; 4276 } 4277 4278 // check if it satisfies the NetworkCapabilities 4279 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4280 if (newNetwork.satisfies(nri.request)) { 4281 if (!nri.isRequest) { 4282 // This is not a request, it's a callback listener. 4283 // Add it to newNetwork regardless of score. 4284 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4285 continue; 4286 } 4287 4288 // next check if it's better than any current network we're using for 4289 // this request 4290 if (VDBG) { 4291 log("currentScore = " + 4292 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4293 ", newScore = " + newNetwork.getCurrentScore()); 4294 } 4295 if (currentNetwork == null || 4296 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4297 if (currentNetwork != null) { 4298 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4299 currentNetwork.networkRequests.remove(nri.request.requestId); 4300 currentNetwork.networkLingered.add(nri.request); 4301 affectedNetworks.add(currentNetwork); 4302 } else { 4303 if (DBG) log(" accepting network in place of null"); 4304 } 4305 unlinger(newNetwork); 4306 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4307 if (!newNetwork.addRequest(nri.request)) { 4308 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4309 } 4310 addedRequests.add(nri); 4311 keep = true; 4312 // Tell NetworkFactories about the new score, so they can stop 4313 // trying to connect if they know they cannot match it. 4314 // TODO - this could get expensive if we have alot of requests for this 4315 // network. Think about if there is a way to reduce this. Push 4316 // netid->request mapping to each factory? 4317 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4318 if (mDefaultRequest.requestId == nri.request.requestId) { 4319 isNewDefault = true; 4320 oldDefaultNetwork = currentNetwork; 4321 } 4322 } 4323 } 4324 } 4325 // Linger any networks that are no longer needed. 4326 for (NetworkAgentInfo nai : affectedNetworks) { 4327 if (nai.lingering) { 4328 // Already lingered. Nothing to do. This can only happen if "nai" is in 4329 // "affectedNetworks" twice. The reasoning being that to get added to 4330 // "affectedNetworks", "nai" must have been satisfying a NetworkRequest 4331 // (i.e. not lingered) so it could have only been lingered by this loop. 4332 // unneeded(nai) will be false and we'll call unlinger() below which would 4333 // be bad, so handle it here. 4334 } else if (unneeded(nai)) { 4335 linger(nai); 4336 } else { 4337 // Clear nai.networkLingered we might have added above. 4338 unlinger(nai); 4339 } 4340 } 4341 if (keep) { 4342 if (isNewDefault) { 4343 // Notify system services that this network is up. 4344 makeDefault(newNetwork); 4345 synchronized (ConnectivityService.this) { 4346 // have a new default network, release the transition wakelock in 4347 // a second if it's held. The second pause is to allow apps 4348 // to reconnect over the new network 4349 if (mNetTransitionWakeLock.isHeld()) { 4350 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4351 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4352 mNetTransitionWakeLockSerialNumber, 0), 4353 1000); 4354 } 4355 } 4356 } 4357 4358 // do this after the default net is switched, but 4359 // before LegacyTypeTracker sends legacy broadcasts 4360 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4361 4362 if (isNewDefault) { 4363 // Maintain the illusion: since the legacy API only 4364 // understands one network at a time, we must pretend 4365 // that the current default network disconnected before 4366 // the new one connected. 4367 if (oldDefaultNetwork != null) { 4368 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4369 oldDefaultNetwork, true); 4370 } 4371 mDefaultInetConditionPublished = newNetwork.lastValidated ? 100 : 0; 4372 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4373 notifyLockdownVpn(newNetwork); 4374 } 4375 4376 // Notify battery stats service about this network, both the normal 4377 // interface and any stacked links. 4378 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4379 try { 4380 final IBatteryStats bs = BatteryStatsService.getService(); 4381 final int type = newNetwork.networkInfo.getType(); 4382 4383 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4384 bs.noteNetworkInterfaceType(baseIface, type); 4385 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4386 final String stackedIface = stacked.getInterfaceName(); 4387 bs.noteNetworkInterfaceType(stackedIface, type); 4388 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4389 } 4390 } catch (RemoteException ignored) { 4391 } 4392 4393 // This has to happen after the notifyNetworkCallbacks as that tickles each 4394 // ConnectivityManager instance so that legacy requests correctly bind dns 4395 // requests to this network. The legacy users are listening for this bcast 4396 // and will generally do a dns request so they can ensureRouteToHost and if 4397 // they do that before the callbacks happen they'll use the default network. 4398 // 4399 // TODO: Is there still a race here? We send the broadcast 4400 // after sending the callback, but if the app can receive the 4401 // broadcast before the callback, it might still break. 4402 // 4403 // This *does* introduce a race where if the user uses the new api 4404 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4405 // they may get old info. Reverse this after the old startUsing api is removed. 4406 // This is on top of the multiple intent sequencing referenced in the todo above. 4407 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4408 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4409 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4410 // legacy type tracker filters out repeat adds 4411 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4412 } 4413 } 4414 4415 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4416 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4417 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4418 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4419 if (newNetwork.isVPN()) { 4420 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4421 } 4422 } 4423 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4424 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4425 if (unneeded(nai)) { 4426 if (DBG) log("Reaping " + nai.name()); 4427 teardownUnneededNetwork(nai); 4428 } 4429 } 4430 } 4431 } 4432 4433 /** 4434 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4435 * being disconnected. 4436 * @param changed If only one Network's score or capabilities have been modified since the last 4437 * time this function was called, pass this Network in this argument, otherwise pass 4438 * null. 4439 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4440 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4441 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4442 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4443 * network's score. 4444 */ 4445 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4446 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4447 // to avoid the slowness. It is not simply enough to process just "changed", for 4448 // example in the case where "changed"'s score decreases and another network should begin 4449 // satifying a NetworkRequest that "changed" currently satisfies. 4450 4451 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4452 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4453 // rematchNetworkAndRequests() handles. 4454 if (changed != null && oldScore < changed.getCurrentScore()) { 4455 rematchNetworkAndRequests(changed, ReapUnvalidatedNetworks.REAP); 4456 } else { 4457 final NetworkAgentInfo[] nais = mNetworkAgentInfos.values().toArray( 4458 new NetworkAgentInfo[mNetworkAgentInfos.size()]); 4459 // Rematch higher scoring networks first to prevent requests first matching a lower 4460 // scoring network and then a higher scoring network, which could produce multiple 4461 // callbacks and inadvertently unlinger networks. 4462 Arrays.sort(nais); 4463 for (NetworkAgentInfo nai : nais) { 4464 rematchNetworkAndRequests(nai, 4465 // Only reap the last time through the loop. Reaping before all rematching 4466 // is complete could incorrectly teardown a network that hasn't yet been 4467 // rematched. 4468 (nai != nais[nais.length-1]) ? ReapUnvalidatedNetworks.DONT_REAP 4469 : ReapUnvalidatedNetworks.REAP); 4470 } 4471 } 4472 } 4473 4474 private void updateInetCondition(NetworkAgentInfo nai) { 4475 // Don't bother updating until we've graduated to validated at least once. 4476 if (!nai.everValidated) return; 4477 // For now only update icons for default connection. 4478 // TODO: Update WiFi and cellular icons separately. b/17237507 4479 if (!isDefaultNetwork(nai)) return; 4480 4481 int newInetCondition = nai.lastValidated ? 100 : 0; 4482 // Don't repeat publish. 4483 if (newInetCondition == mDefaultInetConditionPublished) return; 4484 4485 mDefaultInetConditionPublished = newInetCondition; 4486 sendInetConditionBroadcast(nai.networkInfo); 4487 } 4488 4489 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4490 if (mLockdownTracker != null) { 4491 if (nai != null && nai.isVPN()) { 4492 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4493 } else { 4494 mLockdownTracker.onNetworkInfoChanged(); 4495 } 4496 } 4497 } 4498 4499 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4500 NetworkInfo.State state = newInfo.getState(); 4501 NetworkInfo oldInfo = null; 4502 final int oldScore = networkAgent.getCurrentScore(); 4503 synchronized (networkAgent) { 4504 oldInfo = networkAgent.networkInfo; 4505 networkAgent.networkInfo = newInfo; 4506 } 4507 notifyLockdownVpn(networkAgent); 4508 4509 if (oldInfo != null && oldInfo.getState() == state) { 4510 if (VDBG) log("ignoring duplicate network state non-change"); 4511 return; 4512 } 4513 if (DBG) { 4514 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4515 (oldInfo == null ? "null" : oldInfo.getState()) + 4516 " to " + state); 4517 } 4518 4519 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4520 try { 4521 // This should never fail. Specifying an already in use NetID will cause failure. 4522 if (networkAgent.isVPN()) { 4523 mNetd.createVirtualNetwork(networkAgent.network.netId, 4524 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4525 (networkAgent.networkMisc == null || 4526 !networkAgent.networkMisc.allowBypass)); 4527 } else { 4528 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4529 } 4530 } catch (Exception e) { 4531 loge("Error creating network " + networkAgent.network.netId + ": " 4532 + e.getMessage()); 4533 return; 4534 } 4535 networkAgent.created = true; 4536 updateLinkProperties(networkAgent, null); 4537 notifyIfacesChanged(); 4538 4539 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4540 scheduleUnvalidatedPrompt(networkAgent); 4541 4542 if (networkAgent.isVPN()) { 4543 // Temporarily disable the default proxy (not global). 4544 synchronized (mProxyLock) { 4545 if (!mDefaultProxyDisabled) { 4546 mDefaultProxyDisabled = true; 4547 if (mGlobalProxy == null && mDefaultProxy != null) { 4548 sendProxyBroadcast(null); 4549 } 4550 } 4551 } 4552 // TODO: support proxy per network. 4553 } 4554 4555 // Whether a particular NetworkRequest listen should cause signal strength thresholds to 4556 // be communicated to a particular NetworkAgent depends only on the network's immutable, 4557 // capabilities, so it only needs to be done once on initial connect, not every time the 4558 // network's capabilities change. Note that we do this before rematching the network, 4559 // so we could decide to tear it down immediately afterwards. That's fine though - on 4560 // disconnection NetworkAgents should stop any signal strength monitoring they have been 4561 // doing. 4562 updateSignalStrengthThresholds(networkAgent); 4563 4564 // Consider network even though it is not yet validated. 4565 rematchNetworkAndRequests(networkAgent, ReapUnvalidatedNetworks.REAP); 4566 4567 // This has to happen after matching the requests, because callbacks are just requests. 4568 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4569 } else if (state == NetworkInfo.State.DISCONNECTED) { 4570 networkAgent.asyncChannel.disconnect(); 4571 if (networkAgent.isVPN()) { 4572 synchronized (mProxyLock) { 4573 if (mDefaultProxyDisabled) { 4574 mDefaultProxyDisabled = false; 4575 if (mGlobalProxy == null && mDefaultProxy != null) { 4576 sendProxyBroadcast(mDefaultProxy); 4577 } 4578 } 4579 } 4580 } 4581 } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) || 4582 state == NetworkInfo.State.SUSPENDED) { 4583 // going into or coming out of SUSPEND: rescore and notify 4584 if (networkAgent.getCurrentScore() != oldScore) { 4585 rematchAllNetworksAndRequests(networkAgent, oldScore); 4586 } 4587 notifyNetworkCallbacks(networkAgent, (state == NetworkInfo.State.SUSPENDED ? 4588 ConnectivityManager.CALLBACK_SUSPENDED : 4589 ConnectivityManager.CALLBACK_RESUMED)); 4590 mLegacyTypeTracker.update(networkAgent); 4591 } 4592 } 4593 4594 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4595 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4596 if (score < 0) { 4597 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4598 "). Bumping score to min of 0"); 4599 score = 0; 4600 } 4601 4602 final int oldScore = nai.getCurrentScore(); 4603 nai.setCurrentScore(score); 4604 4605 rematchAllNetworksAndRequests(nai, oldScore); 4606 4607 sendUpdatedScoreToFactories(nai); 4608 } 4609 4610 // notify only this one new request of the current state 4611 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4612 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4613 // TODO - read state from monitor to decide what to send. 4614// if (nai.networkMonitor.isLingering()) { 4615// notifyType = NetworkCallbacks.LOSING; 4616// } else if (nai.networkMonitor.isEvaluating()) { 4617// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4618// } 4619 if (nri.mPendingIntent == null) { 4620 callCallbackForRequest(nri, nai, notifyType); 4621 } else { 4622 sendPendingIntentForRequest(nri, nai, notifyType); 4623 } 4624 } 4625 4626 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, DetailedState state, int type) { 4627 // The NetworkInfo we actually send out has no bearing on the real 4628 // state of affairs. For example, if the default connection is mobile, 4629 // and a request for HIPRI has just gone away, we need to pretend that 4630 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4631 // the state to DISCONNECTED, even though the network is of type MOBILE 4632 // and is still connected. 4633 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4634 info.setType(type); 4635 if (state != DetailedState.DISCONNECTED) { 4636 info.setDetailedState(state, null, info.getExtraInfo()); 4637 sendConnectedBroadcast(info); 4638 } else { 4639 info.setDetailedState(state, info.getReason(), info.getExtraInfo()); 4640 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4641 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4642 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4643 if (info.isFailover()) { 4644 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4645 nai.networkInfo.setFailover(false); 4646 } 4647 if (info.getReason() != null) { 4648 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4649 } 4650 if (info.getExtraInfo() != null) { 4651 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4652 } 4653 NetworkAgentInfo newDefaultAgent = null; 4654 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4655 newDefaultAgent = getDefaultNetwork(); 4656 if (newDefaultAgent != null) { 4657 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4658 newDefaultAgent.networkInfo); 4659 } else { 4660 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4661 } 4662 } 4663 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4664 mDefaultInetConditionPublished); 4665 sendStickyBroadcast(intent); 4666 if (newDefaultAgent != null) { 4667 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4668 } 4669 } 4670 } 4671 4672 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4673 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4674 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4675 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4676 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4677 if (VDBG) log(" sending notification for " + nr); 4678 if (nri.mPendingIntent == null) { 4679 callCallbackForRequest(nri, networkAgent, notifyType); 4680 } else { 4681 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4682 } 4683 } 4684 } 4685 4686 private String notifyTypeToName(int notifyType) { 4687 switch (notifyType) { 4688 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4689 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4690 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4691 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4692 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4693 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4694 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4695 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4696 } 4697 return "UNKNOWN"; 4698 } 4699 4700 /** 4701 * Notify other system services that set of active ifaces has changed. 4702 */ 4703 private void notifyIfacesChanged() { 4704 try { 4705 mStatsService.forceUpdateIfaces(); 4706 } catch (Exception ignored) { 4707 } 4708 } 4709 4710 @Override 4711 public boolean addVpnAddress(String address, int prefixLength) { 4712 throwIfLockdownEnabled(); 4713 int user = UserHandle.getUserId(Binder.getCallingUid()); 4714 synchronized (mVpns) { 4715 return mVpns.get(user).addAddress(address, prefixLength); 4716 } 4717 } 4718 4719 @Override 4720 public boolean removeVpnAddress(String address, int prefixLength) { 4721 throwIfLockdownEnabled(); 4722 int user = UserHandle.getUserId(Binder.getCallingUid()); 4723 synchronized (mVpns) { 4724 return mVpns.get(user).removeAddress(address, prefixLength); 4725 } 4726 } 4727 4728 @Override 4729 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4730 throwIfLockdownEnabled(); 4731 int user = UserHandle.getUserId(Binder.getCallingUid()); 4732 boolean success; 4733 synchronized (mVpns) { 4734 success = mVpns.get(user).setUnderlyingNetworks(networks); 4735 } 4736 if (success) { 4737 notifyIfacesChanged(); 4738 } 4739 return success; 4740 } 4741 4742 @Override 4743 public void startNattKeepalive(Network network, int intervalSeconds, Messenger messenger, 4744 IBinder binder, String srcAddr, int srcPort, String dstAddr) { 4745 enforceKeepalivePermission(); 4746 mKeepaliveTracker.startNattKeepalive( 4747 getNetworkAgentInfoForNetwork(network), 4748 intervalSeconds, messenger, binder, 4749 srcAddr, srcPort, dstAddr, ConnectivityManager.PacketKeepalive.NATT_PORT); 4750 } 4751 4752 @Override 4753 public void stopKeepalive(Network network, int slot) { 4754 mHandler.sendMessage(mHandler.obtainMessage( 4755 NetworkAgent.CMD_STOP_PACKET_KEEPALIVE, slot, PacketKeepalive.SUCCESS, network)); 4756 } 4757 4758 @Override 4759 public void factoryReset() { 4760 enforceConnectivityInternalPermission(); 4761 4762 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 4763 return; 4764 } 4765 4766 final int userId = UserHandle.getCallingUserId(); 4767 4768 // Turn airplane mode off 4769 setAirplaneMode(false); 4770 4771 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 4772 // Untether 4773 for (String tether : getTetheredIfaces()) { 4774 untether(tether); 4775 } 4776 } 4777 4778 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 4779 // Turn VPN off 4780 VpnConfig vpnConfig = getVpnConfig(userId); 4781 if (vpnConfig != null) { 4782 if (vpnConfig.legacy) { 4783 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 4784 } else { 4785 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 4786 // in the future without user intervention. 4787 setVpnPackageAuthorization(vpnConfig.user, userId, false); 4788 4789 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 4790 } 4791 } 4792 } 4793 } 4794} 4795