ConnectivityService.java revision 86e7d135acbdb0055de6a687817d44ac60603c9f
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 // TODO - we shouldn't send CALLBACK_LOST to requests that can be satisfied 2175 // by other networks that are already connected. Perhaps that can be done by 2176 // sending all CALLBACK_LOST messages (for requests, not listens) at the end 2177 // of rematchAllNetworksAndRequests 2178 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2179 mKeepaliveTracker.handleStopAllKeepalives(nai, 2180 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 2181 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2182 mNetworkAgentInfos.remove(msg.replyTo); 2183 updateClat(null, nai.linkProperties, nai); 2184 synchronized (mNetworkForNetId) { 2185 // Remove the NetworkAgent, but don't mark the netId as 2186 // available until we've told netd to delete it below. 2187 mNetworkForNetId.remove(nai.network.netId); 2188 } 2189 // Remove all previously satisfied requests. 2190 for (int i = 0; i < nai.networkRequests.size(); i++) { 2191 NetworkRequest request = nai.networkRequests.valueAt(i); 2192 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2193 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2194 mNetworkForRequestId.remove(request.requestId); 2195 sendUpdatedScoreToFactories(request, 0); 2196 } 2197 } 2198 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2199 removeDataActivityTracking(nai); 2200 notifyLockdownVpn(nai); 2201 requestNetworkTransitionWakelock(nai.name()); 2202 } 2203 mLegacyTypeTracker.remove(nai, wasDefault); 2204 rematchAllNetworksAndRequests(null, 0); 2205 if (nai.created) { 2206 // Tell netd to clean up the configuration for this network 2207 // (routing rules, DNS, etc). 2208 // This may be slow as it requires a lot of netd shelling out to ip and 2209 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2210 // after we've rematched networks with requests which should make a potential 2211 // fallback network the default or requested a new network from the 2212 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2213 // long time. 2214 try { 2215 mNetd.removeNetwork(nai.network.netId); 2216 } catch (Exception e) { 2217 loge("Exception removing network: " + e); 2218 } 2219 } 2220 synchronized (mNetworkForNetId) { 2221 mNetIdInUse.delete(nai.network.netId); 2222 } 2223 } else { 2224 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2225 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2226 } 2227 } 2228 2229 // If this method proves to be too slow then we can maintain a separate 2230 // pendingIntent => NetworkRequestInfo map. 2231 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2232 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2233 Intent intent = pendingIntent.getIntent(); 2234 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2235 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2236 if (existingPendingIntent != null && 2237 existingPendingIntent.getIntent().filterEquals(intent)) { 2238 return entry.getValue(); 2239 } 2240 } 2241 return null; 2242 } 2243 2244 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2245 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2246 2247 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2248 if (existingRequest != null) { // remove the existing request. 2249 if (DBG) log("Replacing " + existingRequest.request + " with " 2250 + nri.request + " because their intents matched."); 2251 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2252 } 2253 handleRegisterNetworkRequest(nri); 2254 } 2255 2256 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2257 mNetworkRequests.put(nri.request, nri); 2258 mNetworkRequestInfoLogs.log("REGISTER " + nri); 2259 if (!nri.isRequest) { 2260 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2261 if (network.satisfiesImmutableCapabilitiesOf(nri.request)) { 2262 updateSignalStrengthThresholds(network); 2263 } 2264 } 2265 } 2266 rematchAllNetworksAndRequests(null, 0); 2267 if (nri.isRequest && mNetworkForRequestId.get(nri.request.requestId) == null) { 2268 sendUpdatedScoreToFactories(nri.request, 0); 2269 } 2270 } 2271 2272 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2273 int callingUid) { 2274 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2275 if (nri != null) { 2276 handleReleaseNetworkRequest(nri.request, callingUid); 2277 } 2278 } 2279 2280 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2281 // This is whether it is satisfying any NetworkRequests or were it to become validated, 2282 // would it have a chance of satisfying any NetworkRequests. 2283 private boolean unneeded(NetworkAgentInfo nai) { 2284 if (!nai.created || nai.isVPN() || nai.lingering) return false; 2285 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2286 // If this Network is already the highest scoring Network for a request, or if 2287 // there is hope for it to become one if it validated, then it is needed. 2288 if (nri.isRequest && nai.satisfies(nri.request) && 2289 (nai.networkRequests.get(nri.request.requestId) != null || 2290 // Note that this catches two important cases: 2291 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2292 // is currently satisfying the request. This is desirable when 2293 // cellular ends up validating but WiFi does not. 2294 // 2. Unvalidated WiFi will not be reaped when validated cellular 2295 // is currently satisfying the request. This is desirable when 2296 // WiFi ends up validating and out scoring cellular. 2297 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2298 nai.getCurrentScoreAsValidated())) { 2299 return false; 2300 } 2301 } 2302 return true; 2303 } 2304 2305 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2306 NetworkRequestInfo nri = mNetworkRequests.get(request); 2307 if (nri != null) { 2308 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2309 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2310 return; 2311 } 2312 if (DBG) log("releasing NetworkRequest " + request); 2313 nri.unlinkDeathRecipient(); 2314 mNetworkRequests.remove(request); 2315 mNetworkRequestInfoLogs.log("RELEASE " + nri); 2316 if (nri.isRequest) { 2317 // Find all networks that are satisfying this request and remove the request 2318 // from their request lists. 2319 // TODO - it's my understanding that for a request there is only a single 2320 // network satisfying it, so this loop is wasteful 2321 boolean wasKept = false; 2322 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2323 if (nai.networkRequests.get(nri.request.requestId) != null) { 2324 nai.networkRequests.remove(nri.request.requestId); 2325 if (DBG) { 2326 log(" Removing from current network " + nai.name() + 2327 ", leaving " + nai.networkRequests.size() + 2328 " requests."); 2329 } 2330 if (unneeded(nai)) { 2331 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2332 teardownUnneededNetwork(nai); 2333 } else { 2334 // suspect there should only be one pass through here 2335 // but if any were kept do the check below 2336 wasKept |= true; 2337 } 2338 } 2339 } 2340 2341 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2342 if (nai != null) { 2343 mNetworkForRequestId.remove(nri.request.requestId); 2344 } 2345 // Maintain the illusion. When this request arrived, we might have pretended 2346 // that a network connected to serve it, even though the network was already 2347 // connected. Now that this request has gone away, we might have to pretend 2348 // that the network disconnected. LegacyTypeTracker will generate that 2349 // phantom disconnect for this type. 2350 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2351 boolean doRemove = true; 2352 if (wasKept) { 2353 // check if any of the remaining requests for this network are for the 2354 // same legacy type - if so, don't remove the nai 2355 for (int i = 0; i < nai.networkRequests.size(); i++) { 2356 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2357 if (otherRequest.legacyType == nri.request.legacyType && 2358 isRequest(otherRequest)) { 2359 if (DBG) log(" still have other legacy request - leaving"); 2360 doRemove = false; 2361 } 2362 } 2363 } 2364 2365 if (doRemove) { 2366 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2367 } 2368 } 2369 2370 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2371 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2372 nri.request); 2373 } 2374 } else { 2375 // listens don't have a singular affectedNetwork. Check all networks to see 2376 // if this listen request applies and remove it. 2377 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2378 nai.networkRequests.remove(nri.request.requestId); 2379 if (nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 2380 updateSignalStrengthThresholds(nai); 2381 } 2382 } 2383 } 2384 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2385 } 2386 } 2387 2388 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2389 enforceConnectivityInternalPermission(); 2390 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2391 accept ? 1 : 0, always ? 1: 0, network)); 2392 } 2393 2394 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2395 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2396 " accept=" + accept + " always=" + always); 2397 2398 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2399 if (nai == null) { 2400 // Nothing to do. 2401 return; 2402 } 2403 2404 if (nai.everValidated) { 2405 // The network validated while the dialog box was up. Take no action. 2406 return; 2407 } 2408 2409 if (!nai.networkMisc.explicitlySelected) { 2410 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2411 } 2412 2413 if (accept != nai.networkMisc.acceptUnvalidated) { 2414 int oldScore = nai.getCurrentScore(); 2415 nai.networkMisc.acceptUnvalidated = accept; 2416 rematchAllNetworksAndRequests(nai, oldScore); 2417 sendUpdatedScoreToFactories(nai); 2418 } 2419 2420 if (always) { 2421 nai.asyncChannel.sendMessage( 2422 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2423 } 2424 2425 if (!accept) { 2426 // Tell the NetworkAgent to not automatically reconnect to the network. 2427 nai.asyncChannel.sendMessage(NetworkAgent.CMD_PREVENT_AUTOMATIC_RECONNECT); 2428 // Teardown the nework. 2429 teardownUnneededNetwork(nai); 2430 } 2431 2432 } 2433 2434 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2435 if (DBG) log("scheduleUnvalidatedPrompt " + nai.network); 2436 mHandler.sendMessageDelayed( 2437 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2438 PROMPT_UNVALIDATED_DELAY_MS); 2439 } 2440 2441 private void handlePromptUnvalidated(Network network) { 2442 if (DBG) log("handlePromptUnvalidated " + network); 2443 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2444 2445 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2446 // we haven't already been told to switch to it regardless of whether it validated or not. 2447 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2448 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2449 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2450 return; 2451 } 2452 2453 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2454 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2455 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2456 intent.setClassName("com.android.settings", 2457 "com.android.settings.wifi.WifiNoInternetDialog"); 2458 2459 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2460 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2461 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2462 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent, true); 2463 } 2464 2465 private class InternalHandler extends Handler { 2466 public InternalHandler(Looper looper) { 2467 super(looper); 2468 } 2469 2470 @Override 2471 public void handleMessage(Message msg) { 2472 switch (msg.what) { 2473 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2474 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2475 String causedBy = null; 2476 synchronized (ConnectivityService.this) { 2477 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2478 mNetTransitionWakeLock.isHeld()) { 2479 mNetTransitionWakeLock.release(); 2480 causedBy = mNetTransitionWakeLockCausedBy; 2481 } else { 2482 break; 2483 } 2484 } 2485 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2486 log("Failed to find a new network - expiring NetTransition Wakelock"); 2487 } else { 2488 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2489 " cleared because we found a replacement network"); 2490 } 2491 break; 2492 } 2493 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2494 handleDeprecatedGlobalHttpProxy(); 2495 break; 2496 } 2497 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2498 Intent intent = (Intent)msg.obj; 2499 sendStickyBroadcast(intent); 2500 break; 2501 } 2502 case EVENT_PROXY_HAS_CHANGED: { 2503 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2504 break; 2505 } 2506 case EVENT_REGISTER_NETWORK_FACTORY: { 2507 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2508 break; 2509 } 2510 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2511 handleUnregisterNetworkFactory((Messenger)msg.obj); 2512 break; 2513 } 2514 case EVENT_REGISTER_NETWORK_AGENT: { 2515 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2516 break; 2517 } 2518 case EVENT_REGISTER_NETWORK_REQUEST: 2519 case EVENT_REGISTER_NETWORK_LISTENER: { 2520 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2521 break; 2522 } 2523 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2524 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2525 handleRegisterNetworkRequestWithIntent(msg); 2526 break; 2527 } 2528 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2529 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2530 break; 2531 } 2532 case EVENT_RELEASE_NETWORK_REQUEST: { 2533 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2534 break; 2535 } 2536 case EVENT_SET_ACCEPT_UNVALIDATED: { 2537 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2538 break; 2539 } 2540 case EVENT_PROMPT_UNVALIDATED: { 2541 handlePromptUnvalidated((Network) msg.obj); 2542 break; 2543 } 2544 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2545 handleMobileDataAlwaysOn(); 2546 break; 2547 } 2548 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2549 case NetworkAgent.CMD_START_PACKET_KEEPALIVE: { 2550 mKeepaliveTracker.handleStartKeepalive(msg); 2551 break; 2552 } 2553 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2554 case NetworkAgent.CMD_STOP_PACKET_KEEPALIVE: { 2555 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork((Network) msg.obj); 2556 int slot = msg.arg1; 2557 int reason = msg.arg2; 2558 mKeepaliveTracker.handleStopKeepalive(nai, slot, reason); 2559 break; 2560 } 2561 case EVENT_SYSTEM_READY: { 2562 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2563 nai.networkMonitor.systemReady = true; 2564 } 2565 break; 2566 } 2567 } 2568 } 2569 } 2570 2571 // javadoc from interface 2572 public int tether(String iface) { 2573 ConnectivityManager.enforceTetherChangePermission(mContext); 2574 if (isTetheringSupported()) { 2575 return mTethering.tether(iface); 2576 } else { 2577 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2578 } 2579 } 2580 2581 // javadoc from interface 2582 public int untether(String iface) { 2583 ConnectivityManager.enforceTetherChangePermission(mContext); 2584 2585 if (isTetheringSupported()) { 2586 return mTethering.untether(iface); 2587 } else { 2588 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2589 } 2590 } 2591 2592 // javadoc from interface 2593 public int getLastTetherError(String iface) { 2594 enforceTetherAccessPermission(); 2595 2596 if (isTetheringSupported()) { 2597 return mTethering.getLastTetherError(iface); 2598 } else { 2599 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2600 } 2601 } 2602 2603 // TODO - proper iface API for selection by property, inspection, etc 2604 public String[] getTetherableUsbRegexs() { 2605 enforceTetherAccessPermission(); 2606 if (isTetheringSupported()) { 2607 return mTethering.getTetherableUsbRegexs(); 2608 } else { 2609 return new String[0]; 2610 } 2611 } 2612 2613 public String[] getTetherableWifiRegexs() { 2614 enforceTetherAccessPermission(); 2615 if (isTetheringSupported()) { 2616 return mTethering.getTetherableWifiRegexs(); 2617 } else { 2618 return new String[0]; 2619 } 2620 } 2621 2622 public String[] getTetherableBluetoothRegexs() { 2623 enforceTetherAccessPermission(); 2624 if (isTetheringSupported()) { 2625 return mTethering.getTetherableBluetoothRegexs(); 2626 } else { 2627 return new String[0]; 2628 } 2629 } 2630 2631 public int setUsbTethering(boolean enable) { 2632 ConnectivityManager.enforceTetherChangePermission(mContext); 2633 if (isTetheringSupported()) { 2634 return mTethering.setUsbTethering(enable); 2635 } else { 2636 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2637 } 2638 } 2639 2640 // TODO - move iface listing, queries, etc to new module 2641 // javadoc from interface 2642 public String[] getTetherableIfaces() { 2643 enforceTetherAccessPermission(); 2644 return mTethering.getTetherableIfaces(); 2645 } 2646 2647 public String[] getTetheredIfaces() { 2648 enforceTetherAccessPermission(); 2649 return mTethering.getTetheredIfaces(); 2650 } 2651 2652 public String[] getTetheringErroredIfaces() { 2653 enforceTetherAccessPermission(); 2654 return mTethering.getErroredIfaces(); 2655 } 2656 2657 public String[] getTetheredDhcpRanges() { 2658 enforceConnectivityInternalPermission(); 2659 return mTethering.getTetheredDhcpRanges(); 2660 } 2661 2662 // if ro.tether.denied = true we default to no tethering 2663 // gservices could set the secure setting to 1 though to enable it on a build where it 2664 // had previously been turned off. 2665 public boolean isTetheringSupported() { 2666 enforceTetherAccessPermission(); 2667 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2668 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2669 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2670 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2671 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2672 mTethering.getTetherableWifiRegexs().length != 0 || 2673 mTethering.getTetherableBluetoothRegexs().length != 0) && 2674 mTethering.getUpstreamIfaceTypes().length != 0); 2675 } 2676 2677 // Called when we lose the default network and have no replacement yet. 2678 // This will automatically be cleared after X seconds or a new default network 2679 // becomes CONNECTED, whichever happens first. The timer is started by the 2680 // first caller and not restarted by subsequent callers. 2681 private void requestNetworkTransitionWakelock(String forWhom) { 2682 int serialNum = 0; 2683 synchronized (this) { 2684 if (mNetTransitionWakeLock.isHeld()) return; 2685 serialNum = ++mNetTransitionWakeLockSerialNumber; 2686 mNetTransitionWakeLock.acquire(); 2687 mNetTransitionWakeLockCausedBy = forWhom; 2688 } 2689 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2690 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2691 mNetTransitionWakeLockTimeout); 2692 return; 2693 } 2694 2695 // 100 percent is full good, 0 is full bad. 2696 public void reportInetCondition(int networkType, int percentage) { 2697 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2698 if (nai == null) return; 2699 reportNetworkConnectivity(nai.network, percentage > 50); 2700 } 2701 2702 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2703 enforceAccessPermission(); 2704 enforceInternetPermission(); 2705 2706 NetworkAgentInfo nai; 2707 if (network == null) { 2708 nai = getDefaultNetwork(); 2709 } else { 2710 nai = getNetworkAgentInfoForNetwork(network); 2711 } 2712 if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || 2713 nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { 2714 return; 2715 } 2716 // Revalidate if the app report does not match our current validated state. 2717 if (hasConnectivity == nai.lastValidated) return; 2718 final int uid = Binder.getCallingUid(); 2719 if (DBG) { 2720 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2721 ") by " + uid); 2722 } 2723 synchronized (nai) { 2724 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2725 // which isn't meant to work on uncreated networks. 2726 if (!nai.created) return; 2727 2728 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2729 2730 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2731 } 2732 } 2733 2734 private ProxyInfo getDefaultProxy() { 2735 // this information is already available as a world read/writable jvm property 2736 // so this API change wouldn't have a benifit. It also breaks the passing 2737 // of proxy info to all the JVMs. 2738 // enforceAccessPermission(); 2739 synchronized (mProxyLock) { 2740 ProxyInfo ret = mGlobalProxy; 2741 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2742 return ret; 2743 } 2744 } 2745 2746 public ProxyInfo getProxyForNetwork(Network network) { 2747 if (network == null) return getDefaultProxy(); 2748 final ProxyInfo globalProxy = getGlobalProxy(); 2749 if (globalProxy != null) return globalProxy; 2750 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2751 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2752 // caller may not have. 2753 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2754 if (nai == null) return null; 2755 synchronized (nai) { 2756 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2757 if (proxyInfo == null) return null; 2758 return new ProxyInfo(proxyInfo); 2759 } 2760 } 2761 2762 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2763 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2764 // proxy is null then there is no proxy in place). 2765 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2766 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2767 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2768 proxy = null; 2769 } 2770 return proxy; 2771 } 2772 2773 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2774 // better for determining if a new proxy broadcast is necessary: 2775 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2776 // avoid unnecessary broadcasts. 2777 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2778 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2779 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2780 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2781 // all set. 2782 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2783 a = canonicalizeProxyInfo(a); 2784 b = canonicalizeProxyInfo(b); 2785 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2786 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2787 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2788 } 2789 2790 public void setGlobalProxy(ProxyInfo proxyProperties) { 2791 enforceConnectivityInternalPermission(); 2792 2793 synchronized (mProxyLock) { 2794 if (proxyProperties == mGlobalProxy) return; 2795 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2796 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2797 2798 String host = ""; 2799 int port = 0; 2800 String exclList = ""; 2801 String pacFileUrl = ""; 2802 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2803 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2804 if (!proxyProperties.isValid()) { 2805 if (DBG) 2806 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2807 return; 2808 } 2809 mGlobalProxy = new ProxyInfo(proxyProperties); 2810 host = mGlobalProxy.getHost(); 2811 port = mGlobalProxy.getPort(); 2812 exclList = mGlobalProxy.getExclusionListAsString(); 2813 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2814 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2815 } 2816 } else { 2817 mGlobalProxy = null; 2818 } 2819 ContentResolver res = mContext.getContentResolver(); 2820 final long token = Binder.clearCallingIdentity(); 2821 try { 2822 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2823 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2824 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2825 exclList); 2826 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2827 } finally { 2828 Binder.restoreCallingIdentity(token); 2829 } 2830 2831 if (mGlobalProxy == null) { 2832 proxyProperties = mDefaultProxy; 2833 } 2834 sendProxyBroadcast(proxyProperties); 2835 } 2836 } 2837 2838 private void loadGlobalProxy() { 2839 ContentResolver res = mContext.getContentResolver(); 2840 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2841 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2842 String exclList = Settings.Global.getString(res, 2843 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2844 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2845 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2846 ProxyInfo proxyProperties; 2847 if (!TextUtils.isEmpty(pacFileUrl)) { 2848 proxyProperties = new ProxyInfo(pacFileUrl); 2849 } else { 2850 proxyProperties = new ProxyInfo(host, port, exclList); 2851 } 2852 if (!proxyProperties.isValid()) { 2853 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2854 return; 2855 } 2856 2857 synchronized (mProxyLock) { 2858 mGlobalProxy = proxyProperties; 2859 } 2860 } 2861 } 2862 2863 public ProxyInfo getGlobalProxy() { 2864 // this information is already available as a world read/writable jvm property 2865 // so this API change wouldn't have a benifit. It also breaks the passing 2866 // of proxy info to all the JVMs. 2867 // enforceAccessPermission(); 2868 synchronized (mProxyLock) { 2869 return mGlobalProxy; 2870 } 2871 } 2872 2873 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2874 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2875 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2876 proxy = null; 2877 } 2878 synchronized (mProxyLock) { 2879 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2880 if (mDefaultProxy == proxy) return; // catches repeated nulls 2881 if (proxy != null && !proxy.isValid()) { 2882 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2883 return; 2884 } 2885 2886 // This call could be coming from the PacManager, containing the port of the local 2887 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2888 // global (to get the correct local port), and send a broadcast. 2889 // TODO: Switch PacManager to have its own message to send back rather than 2890 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2891 if ((mGlobalProxy != null) && (proxy != null) 2892 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2893 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2894 mGlobalProxy = proxy; 2895 sendProxyBroadcast(mGlobalProxy); 2896 return; 2897 } 2898 mDefaultProxy = proxy; 2899 2900 if (mGlobalProxy != null) return; 2901 if (!mDefaultProxyDisabled) { 2902 sendProxyBroadcast(proxy); 2903 } 2904 } 2905 } 2906 2907 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2908 // This method gets called when any network changes proxy, but the broadcast only ever contains 2909 // the default proxy (even if it hasn't changed). 2910 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2911 // world where an app might be bound to a non-default network. 2912 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2913 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2914 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2915 2916 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2917 sendProxyBroadcast(getDefaultProxy()); 2918 } 2919 } 2920 2921 private void handleDeprecatedGlobalHttpProxy() { 2922 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2923 Settings.Global.HTTP_PROXY); 2924 if (!TextUtils.isEmpty(proxy)) { 2925 String data[] = proxy.split(":"); 2926 if (data.length == 0) { 2927 return; 2928 } 2929 2930 String proxyHost = data[0]; 2931 int proxyPort = 8080; 2932 if (data.length > 1) { 2933 try { 2934 proxyPort = Integer.parseInt(data[1]); 2935 } catch (NumberFormatException e) { 2936 return; 2937 } 2938 } 2939 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2940 setGlobalProxy(p); 2941 } 2942 } 2943 2944 private void sendProxyBroadcast(ProxyInfo proxy) { 2945 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2946 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2947 if (DBG) log("sending Proxy Broadcast for " + proxy); 2948 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2949 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2950 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2951 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2952 final long ident = Binder.clearCallingIdentity(); 2953 try { 2954 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2955 } finally { 2956 Binder.restoreCallingIdentity(ident); 2957 } 2958 } 2959 2960 private static class SettingsObserver extends ContentObserver { 2961 final private HashMap<Uri, Integer> mUriEventMap; 2962 final private Context mContext; 2963 final private Handler mHandler; 2964 2965 SettingsObserver(Context context, Handler handler) { 2966 super(null); 2967 mUriEventMap = new HashMap<Uri, Integer>(); 2968 mContext = context; 2969 mHandler = handler; 2970 } 2971 2972 void observe(Uri uri, int what) { 2973 mUriEventMap.put(uri, what); 2974 final ContentResolver resolver = mContext.getContentResolver(); 2975 resolver.registerContentObserver(uri, false, this); 2976 } 2977 2978 @Override 2979 public void onChange(boolean selfChange) { 2980 Slog.wtf(TAG, "Should never be reached."); 2981 } 2982 2983 @Override 2984 public void onChange(boolean selfChange, Uri uri) { 2985 final Integer what = mUriEventMap.get(uri); 2986 if (what != null) { 2987 mHandler.obtainMessage(what.intValue()).sendToTarget(); 2988 } else { 2989 loge("No matching event to send for URI=" + uri); 2990 } 2991 } 2992 } 2993 2994 private static void log(String s) { 2995 Slog.d(TAG, s); 2996 } 2997 2998 private static void loge(String s) { 2999 Slog.e(TAG, s); 3000 } 3001 3002 private static <T> T checkNotNull(T value, String message) { 3003 if (value == null) { 3004 throw new NullPointerException(message); 3005 } 3006 return value; 3007 } 3008 3009 /** 3010 * Prepare for a VPN application. 3011 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3012 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3013 * 3014 * @param oldPackage Package name of the application which currently controls VPN, which will 3015 * be replaced. If there is no such application, this should should either be 3016 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3017 * @param newPackage Package name of the application which should gain control of VPN, or 3018 * {@code null} to disable. 3019 * @param userId User for whom to prepare the new VPN. 3020 * 3021 * @hide 3022 */ 3023 @Override 3024 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3025 int userId) { 3026 enforceCrossUserPermission(userId); 3027 throwIfLockdownEnabled(); 3028 3029 synchronized(mVpns) { 3030 Vpn vpn = mVpns.get(userId); 3031 if (vpn != null) { 3032 return vpn.prepare(oldPackage, newPackage); 3033 } else { 3034 return false; 3035 } 3036 } 3037 } 3038 3039 /** 3040 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3041 * This method is used by system-privileged apps. 3042 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3043 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3044 * 3045 * @param packageName The package for which authorization state should change. 3046 * @param userId User for whom {@code packageName} is installed. 3047 * @param authorized {@code true} if this app should be able to start a VPN connection without 3048 * explicit user approval, {@code false} if not. 3049 * 3050 * @hide 3051 */ 3052 @Override 3053 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3054 enforceCrossUserPermission(userId); 3055 3056 synchronized(mVpns) { 3057 Vpn vpn = mVpns.get(userId); 3058 if (vpn != null) { 3059 vpn.setPackageAuthorization(packageName, authorized); 3060 } 3061 } 3062 } 3063 3064 /** 3065 * Configure a TUN interface and return its file descriptor. Parameters 3066 * are encoded and opaque to this class. This method is used by VpnBuilder 3067 * and not available in ConnectivityManager. Permissions are checked in 3068 * Vpn class. 3069 * @hide 3070 */ 3071 @Override 3072 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3073 throwIfLockdownEnabled(); 3074 int user = UserHandle.getUserId(Binder.getCallingUid()); 3075 synchronized(mVpns) { 3076 return mVpns.get(user).establish(config); 3077 } 3078 } 3079 3080 /** 3081 * Start legacy VPN, controlling native daemons as needed. Creates a 3082 * secondary thread to perform connection work, returning quickly. 3083 */ 3084 @Override 3085 public void startLegacyVpn(VpnProfile profile) { 3086 throwIfLockdownEnabled(); 3087 final LinkProperties egress = getActiveLinkProperties(); 3088 if (egress == null) { 3089 throw new IllegalStateException("Missing active network connection"); 3090 } 3091 int user = UserHandle.getUserId(Binder.getCallingUid()); 3092 synchronized(mVpns) { 3093 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3094 } 3095 } 3096 3097 /** 3098 * Return the information of the ongoing legacy VPN. This method is used 3099 * by VpnSettings and not available in ConnectivityManager. Permissions 3100 * are checked in Vpn class. 3101 */ 3102 @Override 3103 public LegacyVpnInfo getLegacyVpnInfo(int userId) { 3104 enforceCrossUserPermission(userId); 3105 if (mLockdownEnabled) { 3106 return null; 3107 } 3108 3109 synchronized(mVpns) { 3110 return mVpns.get(userId).getLegacyVpnInfo(); 3111 } 3112 } 3113 3114 /** 3115 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3116 * and not available in ConnectivityManager. 3117 */ 3118 @Override 3119 public VpnInfo[] getAllVpnInfo() { 3120 enforceConnectivityInternalPermission(); 3121 if (mLockdownEnabled) { 3122 return new VpnInfo[0]; 3123 } 3124 3125 synchronized(mVpns) { 3126 List<VpnInfo> infoList = new ArrayList<>(); 3127 for (int i = 0; i < mVpns.size(); i++) { 3128 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3129 if (info != null) { 3130 infoList.add(info); 3131 } 3132 } 3133 return infoList.toArray(new VpnInfo[infoList.size()]); 3134 } 3135 } 3136 3137 /** 3138 * @return VPN information for accounting, or null if we can't retrieve all required 3139 * information, e.g primary underlying iface. 3140 */ 3141 @Nullable 3142 private VpnInfo createVpnInfo(Vpn vpn) { 3143 VpnInfo info = vpn.getVpnInfo(); 3144 if (info == null) { 3145 return null; 3146 } 3147 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3148 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3149 // the underlyingNetworks list. 3150 if (underlyingNetworks == null) { 3151 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3152 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3153 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3154 } 3155 } else if (underlyingNetworks.length > 0) { 3156 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3157 if (linkProperties != null) { 3158 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3159 } 3160 } 3161 return info.primaryUnderlyingIface == null ? null : info; 3162 } 3163 3164 /** 3165 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3166 * VpnDialogs and not available in ConnectivityManager. 3167 * Permissions are checked in Vpn class. 3168 * @hide 3169 */ 3170 @Override 3171 public VpnConfig getVpnConfig(int userId) { 3172 enforceCrossUserPermission(userId); 3173 synchronized(mVpns) { 3174 Vpn vpn = mVpns.get(userId); 3175 if (vpn != null) { 3176 return vpn.getVpnConfig(); 3177 } else { 3178 return null; 3179 } 3180 } 3181 } 3182 3183 @Override 3184 public boolean updateLockdownVpn() { 3185 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3186 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3187 return false; 3188 } 3189 3190 // Tear down existing lockdown if profile was removed 3191 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3192 if (mLockdownEnabled) { 3193 if (!mKeyStore.isUnlocked()) { 3194 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3195 return false; 3196 } 3197 3198 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3199 final VpnProfile profile = VpnProfile.decode( 3200 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3201 int user = UserHandle.getUserId(Binder.getCallingUid()); 3202 synchronized(mVpns) { 3203 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3204 profile)); 3205 } 3206 } else { 3207 setLockdownTracker(null); 3208 } 3209 3210 return true; 3211 } 3212 3213 /** 3214 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3215 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3216 */ 3217 private void setLockdownTracker(LockdownVpnTracker tracker) { 3218 // Shutdown any existing tracker 3219 final LockdownVpnTracker existing = mLockdownTracker; 3220 mLockdownTracker = null; 3221 if (existing != null) { 3222 existing.shutdown(); 3223 } 3224 3225 try { 3226 if (tracker != null) { 3227 mNetd.setFirewallEnabled(true); 3228 mNetd.setFirewallInterfaceRule("lo", true); 3229 mLockdownTracker = tracker; 3230 mLockdownTracker.init(); 3231 } else { 3232 mNetd.setFirewallEnabled(false); 3233 } 3234 } catch (RemoteException e) { 3235 // ignored; NMS lives inside system_server 3236 } 3237 } 3238 3239 private void throwIfLockdownEnabled() { 3240 if (mLockdownEnabled) { 3241 throw new IllegalStateException("Unavailable in lockdown mode"); 3242 } 3243 } 3244 3245 @Override 3246 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3247 // TODO: Remove? Any reason to trigger a provisioning check? 3248 return -1; 3249 } 3250 3251 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3252 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3253 3254 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3255 if (DBG) { 3256 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3257 + " action=" + action); 3258 } 3259 Intent intent = new Intent(action); 3260 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3261 // Concatenate the range of types onto the range of NetIDs. 3262 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3263 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3264 networkType, null, pendingIntent, false); 3265 } 3266 3267 /** 3268 * Show or hide network provisioning notifications. 3269 * 3270 * We use notifications for two purposes: to notify that a network requires sign in 3271 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3272 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3273 * particular network we can display the notification type that was most recently requested. 3274 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3275 * might first display NO_INTERNET, and then when the captive portal check completes, display 3276 * SIGN_IN. 3277 * 3278 * @param id an identifier that uniquely identifies this notification. This must match 3279 * between show and hide calls. We use the NetID value but for legacy callers 3280 * we concatenate the range of types with the range of NetIDs. 3281 */ 3282 private void setProvNotificationVisibleIntent(boolean visible, int id, 3283 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent, 3284 boolean highPriority) { 3285 if (DBG) { 3286 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3287 + " networkType=" + getNetworkTypeName(networkType) 3288 + " extraInfo=" + extraInfo + " highPriority=" + highPriority); 3289 } 3290 3291 Resources r = Resources.getSystem(); 3292 NotificationManager notificationManager = (NotificationManager) mContext 3293 .getSystemService(Context.NOTIFICATION_SERVICE); 3294 3295 if (visible) { 3296 CharSequence title; 3297 CharSequence details; 3298 int icon; 3299 if (notifyType == NotificationType.NO_INTERNET && 3300 networkType == ConnectivityManager.TYPE_WIFI) { 3301 title = r.getString(R.string.wifi_no_internet, 0); 3302 details = r.getString(R.string.wifi_no_internet_detailed); 3303 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3304 } else if (notifyType == NotificationType.SIGN_IN) { 3305 switch (networkType) { 3306 case ConnectivityManager.TYPE_WIFI: 3307 title = r.getString(R.string.wifi_available_sign_in, 0); 3308 details = r.getString(R.string.network_available_sign_in_detailed, 3309 extraInfo); 3310 icon = R.drawable.stat_notify_wifi_in_range; 3311 break; 3312 case ConnectivityManager.TYPE_MOBILE: 3313 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3314 title = r.getString(R.string.network_available_sign_in, 0); 3315 // TODO: Change this to pull from NetworkInfo once a printable 3316 // name has been added to it 3317 details = mTelephonyManager.getNetworkOperatorName(); 3318 icon = R.drawable.stat_notify_rssi_in_range; 3319 break; 3320 default: 3321 title = r.getString(R.string.network_available_sign_in, 0); 3322 details = r.getString(R.string.network_available_sign_in_detailed, 3323 extraInfo); 3324 icon = R.drawable.stat_notify_rssi_in_range; 3325 break; 3326 } 3327 } else { 3328 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3329 + getNetworkTypeName(networkType)); 3330 return; 3331 } 3332 3333 Notification notification = new Notification.Builder(mContext) 3334 .setWhen(0) 3335 .setSmallIcon(icon) 3336 .setAutoCancel(true) 3337 .setTicker(title) 3338 .setColor(mContext.getColor( 3339 com.android.internal.R.color.system_notification_accent_color)) 3340 .setContentTitle(title) 3341 .setContentText(details) 3342 .setContentIntent(intent) 3343 .setLocalOnly(true) 3344 .setPriority(highPriority ? 3345 Notification.PRIORITY_HIGH : 3346 Notification.PRIORITY_DEFAULT) 3347 .setDefaults(Notification.DEFAULT_ALL) 3348 .setOnlyAlertOnce(true) 3349 .build(); 3350 3351 try { 3352 notificationManager.notify(NOTIFICATION_ID, id, notification); 3353 } catch (NullPointerException npe) { 3354 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3355 npe.printStackTrace(); 3356 } 3357 } else { 3358 try { 3359 notificationManager.cancel(NOTIFICATION_ID, id); 3360 } catch (NullPointerException npe) { 3361 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3362 npe.printStackTrace(); 3363 } 3364 } 3365 } 3366 3367 /** Location to an updatable file listing carrier provisioning urls. 3368 * An example: 3369 * 3370 * <?xml version="1.0" encoding="utf-8"?> 3371 * <provisioningUrls> 3372 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3373 * </provisioningUrls> 3374 */ 3375 private static final String PROVISIONING_URL_PATH = 3376 "/data/misc/radio/provisioning_urls.xml"; 3377 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3378 3379 /** XML tag for root element. */ 3380 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3381 /** XML tag for individual url */ 3382 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3383 /** XML attribute for mcc */ 3384 private static final String ATTR_MCC = "mcc"; 3385 /** XML attribute for mnc */ 3386 private static final String ATTR_MNC = "mnc"; 3387 3388 private String getProvisioningUrlBaseFromFile() { 3389 FileReader fileReader = null; 3390 XmlPullParser parser = null; 3391 Configuration config = mContext.getResources().getConfiguration(); 3392 3393 try { 3394 fileReader = new FileReader(mProvisioningUrlFile); 3395 parser = Xml.newPullParser(); 3396 parser.setInput(fileReader); 3397 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3398 3399 while (true) { 3400 XmlUtils.nextElement(parser); 3401 3402 String element = parser.getName(); 3403 if (element == null) break; 3404 3405 if (element.equals(TAG_PROVISIONING_URL)) { 3406 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3407 try { 3408 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3409 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3410 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3411 parser.next(); 3412 if (parser.getEventType() == XmlPullParser.TEXT) { 3413 return parser.getText(); 3414 } 3415 } 3416 } 3417 } catch (NumberFormatException e) { 3418 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3419 } 3420 } 3421 } 3422 return null; 3423 } catch (FileNotFoundException e) { 3424 loge("Carrier Provisioning Urls file not found"); 3425 } catch (XmlPullParserException e) { 3426 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3427 } catch (IOException e) { 3428 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3429 } finally { 3430 if (fileReader != null) { 3431 try { 3432 fileReader.close(); 3433 } catch (IOException e) {} 3434 } 3435 } 3436 return null; 3437 } 3438 3439 @Override 3440 public String getMobileProvisioningUrl() { 3441 enforceConnectivityInternalPermission(); 3442 String url = getProvisioningUrlBaseFromFile(); 3443 if (TextUtils.isEmpty(url)) { 3444 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3445 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3446 } else { 3447 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3448 } 3449 // populate the iccid, imei and phone number in the provisioning url. 3450 if (!TextUtils.isEmpty(url)) { 3451 String phoneNumber = mTelephonyManager.getLine1Number(); 3452 if (TextUtils.isEmpty(phoneNumber)) { 3453 phoneNumber = "0000000000"; 3454 } 3455 url = String.format(url, 3456 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3457 mTelephonyManager.getDeviceId() /* IMEI */, 3458 phoneNumber /* Phone numer */); 3459 } 3460 3461 return url; 3462 } 3463 3464 @Override 3465 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3466 String action) { 3467 enforceConnectivityInternalPermission(); 3468 final long ident = Binder.clearCallingIdentity(); 3469 try { 3470 setProvNotificationVisible(visible, networkType, action); 3471 } finally { 3472 Binder.restoreCallingIdentity(ident); 3473 } 3474 } 3475 3476 @Override 3477 public void setAirplaneMode(boolean enable) { 3478 enforceConnectivityInternalPermission(); 3479 final long ident = Binder.clearCallingIdentity(); 3480 try { 3481 final ContentResolver cr = mContext.getContentResolver(); 3482 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3483 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3484 intent.putExtra("state", enable); 3485 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3486 } finally { 3487 Binder.restoreCallingIdentity(ident); 3488 } 3489 } 3490 3491 private void onUserStart(int userId) { 3492 synchronized(mVpns) { 3493 Vpn userVpn = mVpns.get(userId); 3494 if (userVpn != null) { 3495 loge("Starting user already has a VPN"); 3496 return; 3497 } 3498 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3499 mVpns.put(userId, userVpn); 3500 } 3501 } 3502 3503 private void onUserStop(int userId) { 3504 synchronized(mVpns) { 3505 Vpn userVpn = mVpns.get(userId); 3506 if (userVpn == null) { 3507 loge("Stopping user has no VPN"); 3508 return; 3509 } 3510 mVpns.delete(userId); 3511 } 3512 } 3513 3514 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3515 @Override 3516 public void onReceive(Context context, Intent intent) { 3517 final String action = intent.getAction(); 3518 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3519 if (userId == UserHandle.USER_NULL) return; 3520 3521 if (Intent.ACTION_USER_STARTING.equals(action)) { 3522 onUserStart(userId); 3523 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3524 onUserStop(userId); 3525 } 3526 } 3527 }; 3528 3529 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3530 new HashMap<Messenger, NetworkFactoryInfo>(); 3531 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3532 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3533 3534 private static class NetworkFactoryInfo { 3535 public final String name; 3536 public final Messenger messenger; 3537 public final AsyncChannel asyncChannel; 3538 3539 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3540 this.name = name; 3541 this.messenger = messenger; 3542 this.asyncChannel = asyncChannel; 3543 } 3544 } 3545 3546 /** 3547 * Tracks info about the requester. 3548 * Also used to notice when the calling process dies so we can self-expire 3549 */ 3550 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3551 static final boolean REQUEST = true; 3552 static final boolean LISTEN = false; 3553 3554 final NetworkRequest request; 3555 final PendingIntent mPendingIntent; 3556 boolean mPendingIntentSent; 3557 private final IBinder mBinder; 3558 final int mPid; 3559 final int mUid; 3560 final Messenger messenger; 3561 final boolean isRequest; 3562 3563 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3564 request = r; 3565 mPendingIntent = pi; 3566 messenger = null; 3567 mBinder = null; 3568 mPid = getCallingPid(); 3569 mUid = getCallingUid(); 3570 this.isRequest = isRequest; 3571 } 3572 3573 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3574 super(); 3575 messenger = m; 3576 request = r; 3577 mBinder = binder; 3578 mPid = getCallingPid(); 3579 mUid = getCallingUid(); 3580 this.isRequest = isRequest; 3581 mPendingIntent = null; 3582 3583 try { 3584 mBinder.linkToDeath(this, 0); 3585 } catch (RemoteException e) { 3586 binderDied(); 3587 } 3588 } 3589 3590 void unlinkDeathRecipient() { 3591 if (mBinder != null) { 3592 mBinder.unlinkToDeath(this, 0); 3593 } 3594 } 3595 3596 public void binderDied() { 3597 log("ConnectivityService NetworkRequestInfo binderDied(" + 3598 request + ", " + mBinder + ")"); 3599 releaseNetworkRequest(request); 3600 } 3601 3602 public String toString() { 3603 return (isRequest ? "Request" : "Listen") + 3604 " from uid/pid:" + mUid + "/" + mPid + 3605 " for " + request + 3606 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3607 } 3608 } 3609 3610 private void ensureRequestableCapabilities(NetworkCapabilities networkCapabilities) { 3611 final String badCapability = networkCapabilities.describeFirstNonRequestableCapability(); 3612 if (badCapability != null) { 3613 throw new IllegalArgumentException("Cannot request network with " + badCapability); 3614 } 3615 } 3616 3617 private ArrayList<Integer> getSignalStrengthThresholds(NetworkAgentInfo nai) { 3618 final SortedSet<Integer> thresholds = new TreeSet(); 3619 synchronized (nai) { 3620 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3621 if (nri.request.networkCapabilities.hasSignalStrength() && 3622 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 3623 thresholds.add(nri.request.networkCapabilities.getSignalStrength()); 3624 } 3625 } 3626 } 3627 return new ArrayList<Integer>(thresholds); 3628 } 3629 3630 private void updateSignalStrengthThresholds(NetworkAgentInfo nai) { 3631 Bundle thresholds = new Bundle(); 3632 thresholds.putIntegerArrayList("thresholds", getSignalStrengthThresholds(nai)); 3633 nai.asyncChannel.sendMessage( 3634 android.net.NetworkAgent.CMD_SET_SIGNAL_STRENGTH_THRESHOLDS, 3635 0, 0, thresholds); 3636 } 3637 3638 @Override 3639 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3640 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3641 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3642 enforceNetworkRequestPermissions(networkCapabilities); 3643 enforceMeteredApnPolicy(networkCapabilities); 3644 ensureRequestableCapabilities(networkCapabilities); 3645 3646 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3647 throw new IllegalArgumentException("Bad timeout specified"); 3648 } 3649 3650 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3651 nextNetworkRequestId()); 3652 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3653 NetworkRequestInfo.REQUEST); 3654 if (DBG) log("requestNetwork for " + nri); 3655 3656 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3657 if (timeoutMs > 0) { 3658 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3659 nri), timeoutMs); 3660 } 3661 return networkRequest; 3662 } 3663 3664 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3665 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3666 enforceConnectivityInternalPermission(); 3667 } else { 3668 enforceChangePermission(); 3669 } 3670 } 3671 3672 @Override 3673 public boolean requestBandwidthUpdate(Network network) { 3674 enforceAccessPermission(); 3675 NetworkAgentInfo nai = null; 3676 if (network == null) { 3677 return false; 3678 } 3679 synchronized (mNetworkForNetId) { 3680 nai = mNetworkForNetId.get(network.netId); 3681 } 3682 if (nai != null) { 3683 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3684 return true; 3685 } 3686 return false; 3687 } 3688 3689 3690 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3691 // if UID is restricted, don't allow them to bring up metered APNs 3692 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3693 final int uidRules; 3694 final int uid = Binder.getCallingUid(); 3695 synchronized(mRulesLock) { 3696 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3697 } 3698 if ((uidRules & (RULE_REJECT_METERED | RULE_REJECT_ALL)) != 0) { 3699 // we could silently fail or we can filter the available nets to only give 3700 // them those they have access to. Chose the more useful 3701 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3702 } 3703 } 3704 } 3705 3706 @Override 3707 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3708 PendingIntent operation) { 3709 checkNotNull(operation, "PendingIntent cannot be null."); 3710 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3711 enforceNetworkRequestPermissions(networkCapabilities); 3712 enforceMeteredApnPolicy(networkCapabilities); 3713 ensureRequestableCapabilities(networkCapabilities); 3714 3715 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3716 nextNetworkRequestId()); 3717 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3718 NetworkRequestInfo.REQUEST); 3719 if (DBG) log("pendingRequest for " + nri); 3720 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3721 nri)); 3722 return networkRequest; 3723 } 3724 3725 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3726 mHandler.sendMessageDelayed( 3727 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3728 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3729 } 3730 3731 @Override 3732 public void releasePendingNetworkRequest(PendingIntent operation) { 3733 checkNotNull(operation, "PendingIntent cannot be null."); 3734 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3735 getCallingUid(), 0, operation)); 3736 } 3737 3738 // In order to implement the compatibility measure for pre-M apps that call 3739 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3740 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3741 // This ensures it has permission to do so. 3742 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3743 if (nc == null) { 3744 return false; 3745 } 3746 int[] transportTypes = nc.getTransportTypes(); 3747 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3748 return false; 3749 } 3750 try { 3751 mContext.enforceCallingOrSelfPermission( 3752 android.Manifest.permission.ACCESS_WIFI_STATE, 3753 "ConnectivityService"); 3754 } catch (SecurityException e) { 3755 return false; 3756 } 3757 return true; 3758 } 3759 3760 @Override 3761 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3762 Messenger messenger, IBinder binder) { 3763 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3764 enforceAccessPermission(); 3765 } 3766 3767 NetworkRequest networkRequest = new NetworkRequest( 3768 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3769 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3770 NetworkRequestInfo.LISTEN); 3771 if (DBG) log("listenForNetwork for " + nri); 3772 3773 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3774 return networkRequest; 3775 } 3776 3777 @Override 3778 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3779 PendingIntent operation) { 3780 checkNotNull(operation, "PendingIntent cannot be null."); 3781 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3782 enforceAccessPermission(); 3783 } 3784 3785 NetworkRequest networkRequest = new NetworkRequest( 3786 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3787 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3788 NetworkRequestInfo.LISTEN); 3789 if (DBG) log("pendingListenForNetwork for " + nri); 3790 3791 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3792 } 3793 3794 @Override 3795 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3796 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3797 0, networkRequest)); 3798 } 3799 3800 @Override 3801 public void registerNetworkFactory(Messenger messenger, String name) { 3802 enforceConnectivityInternalPermission(); 3803 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3804 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3805 } 3806 3807 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3808 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3809 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3810 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3811 } 3812 3813 @Override 3814 public void unregisterNetworkFactory(Messenger messenger) { 3815 enforceConnectivityInternalPermission(); 3816 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3817 } 3818 3819 private void handleUnregisterNetworkFactory(Messenger messenger) { 3820 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3821 if (nfi == null) { 3822 loge("Failed to find Messenger in unregisterNetworkFactory"); 3823 return; 3824 } 3825 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3826 } 3827 3828 /** 3829 * NetworkAgentInfo supporting a request by requestId. 3830 * These have already been vetted (their Capabilities satisfy the request) 3831 * and the are the highest scored network available. 3832 * the are keyed off the Requests requestId. 3833 */ 3834 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 3835 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3836 new SparseArray<NetworkAgentInfo>(); 3837 3838 // NOTE: Accessed on multiple threads, must be synchronized on itself. 3839 @GuardedBy("mNetworkForNetId") 3840 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3841 new SparseArray<NetworkAgentInfo>(); 3842 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 3843 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 3844 // there may not be a strict 1:1 correlation between the two. 3845 @GuardedBy("mNetworkForNetId") 3846 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 3847 3848 // NetworkAgentInfo keyed off its connecting messenger 3849 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3850 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 3851 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3852 new HashMap<Messenger, NetworkAgentInfo>(); 3853 3854 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3855 private final NetworkRequest mDefaultRequest; 3856 3857 // Request used to optionally keep mobile data active even when higher 3858 // priority networks like Wi-Fi are active. 3859 private final NetworkRequest mDefaultMobileDataRequest; 3860 3861 private NetworkAgentInfo getDefaultNetwork() { 3862 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3863 } 3864 3865 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3866 return nai == getDefaultNetwork(); 3867 } 3868 3869 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3870 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3871 int currentScore, NetworkMisc networkMisc) { 3872 enforceConnectivityInternalPermission(); 3873 3874 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3875 // satisfies mDefaultRequest. 3876 final NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3877 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 3878 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 3879 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest, this); 3880 synchronized (this) { 3881 nai.networkMonitor.systemReady = mSystemReady; 3882 } 3883 addValidationLogs(nai.networkMonitor.getValidationLogs(), nai.network); 3884 if (DBG) log("registerNetworkAgent " + nai); 3885 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3886 return nai.network.netId; 3887 } 3888 3889 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3890 if (VDBG) log("Got NetworkAgent Messenger"); 3891 mNetworkAgentInfos.put(na.messenger, na); 3892 synchronized (mNetworkForNetId) { 3893 mNetworkForNetId.put(na.network.netId, na); 3894 } 3895 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3896 NetworkInfo networkInfo = na.networkInfo; 3897 na.networkInfo = null; 3898 updateNetworkInfo(na, networkInfo); 3899 } 3900 3901 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3902 LinkProperties newLp = networkAgent.linkProperties; 3903 int netId = networkAgent.network.netId; 3904 3905 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3906 // we do anything else, make sure its LinkProperties are accurate. 3907 if (networkAgent.clatd != null) { 3908 networkAgent.clatd.fixupLinkProperties(oldLp); 3909 } 3910 3911 updateInterfaces(newLp, oldLp, netId); 3912 updateMtu(newLp, oldLp); 3913 // TODO - figure out what to do for clat 3914// for (LinkProperties lp : newLp.getStackedLinks()) { 3915// updateMtu(lp, null); 3916// } 3917 updateTcpBufferSizes(networkAgent); 3918 3919 // TODO: deprecate and remove mDefaultDns when we can do so safely. See http://b/18327075 3920 // In L, we used it only when the network had Internet access but provided no DNS servers. 3921 // For now, just disable it, and if disabling it doesn't break things, remove it. 3922 // final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3923 // NET_CAPABILITY_INTERNET); 3924 final boolean useDefaultDns = false; 3925 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3926 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3927 3928 updateClat(newLp, oldLp, networkAgent); 3929 if (isDefaultNetwork(networkAgent)) { 3930 handleApplyDefaultProxy(newLp.getHttpProxy()); 3931 } else { 3932 updateProxy(newLp, oldLp, networkAgent); 3933 } 3934 // TODO - move this check to cover the whole function 3935 if (!Objects.equals(newLp, oldLp)) { 3936 notifyIfacesChanged(); 3937 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3938 } 3939 3940 mKeepaliveTracker.handleCheckKeepalivesStillValid(networkAgent); 3941 } 3942 3943 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3944 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3945 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3946 3947 if (!wasRunningClat && shouldRunClat) { 3948 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3949 nai.clatd.start(); 3950 } else if (wasRunningClat && !shouldRunClat) { 3951 nai.clatd.stop(); 3952 } 3953 } 3954 3955 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3956 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3957 if (oldLp != null) { 3958 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3959 } else if (newLp != null) { 3960 interfaceDiff.added = newLp.getAllInterfaceNames(); 3961 } 3962 for (String iface : interfaceDiff.added) { 3963 try { 3964 if (DBG) log("Adding iface " + iface + " to network " + netId); 3965 mNetd.addInterfaceToNetwork(iface, netId); 3966 } catch (Exception e) { 3967 loge("Exception adding interface: " + e); 3968 } 3969 } 3970 for (String iface : interfaceDiff.removed) { 3971 try { 3972 if (DBG) log("Removing iface " + iface + " from network " + netId); 3973 mNetd.removeInterfaceFromNetwork(iface, netId); 3974 } catch (Exception e) { 3975 loge("Exception removing interface: " + e); 3976 } 3977 } 3978 } 3979 3980 /** 3981 * Have netd update routes from oldLp to newLp. 3982 * @return true if routes changed between oldLp and newLp 3983 */ 3984 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3985 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3986 if (oldLp != null) { 3987 routeDiff = oldLp.compareAllRoutes(newLp); 3988 } else if (newLp != null) { 3989 routeDiff.added = newLp.getAllRoutes(); 3990 } 3991 3992 // add routes before removing old in case it helps with continuous connectivity 3993 3994 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3995 for (RouteInfo route : routeDiff.added) { 3996 if (route.hasGateway()) continue; 3997 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3998 try { 3999 mNetd.addRoute(netId, route); 4000 } catch (Exception e) { 4001 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 4002 loge("Exception in addRoute for non-gateway: " + e); 4003 } 4004 } 4005 } 4006 for (RouteInfo route : routeDiff.added) { 4007 if (route.hasGateway() == false) continue; 4008 if (DBG) log("Adding Route [" + route + "] to network " + netId); 4009 try { 4010 mNetd.addRoute(netId, route); 4011 } catch (Exception e) { 4012 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4013 loge("Exception in addRoute for gateway: " + e); 4014 } 4015 } 4016 } 4017 4018 for (RouteInfo route : routeDiff.removed) { 4019 if (DBG) log("Removing Route [" + route + "] from network " + netId); 4020 try { 4021 mNetd.removeRoute(netId, route); 4022 } catch (Exception e) { 4023 loge("Exception in removeRoute: " + e); 4024 } 4025 } 4026 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4027 } 4028 4029 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 4030 boolean flush, boolean useDefaultDns) { 4031 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 4032 Collection<InetAddress> dnses = newLp.getDnsServers(); 4033 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 4034 dnses = new ArrayList(); 4035 dnses.add(mDefaultDns); 4036 if (DBG) { 4037 loge("no dns provided for netId " + netId + ", so using defaults"); 4038 } 4039 } 4040 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 4041 try { 4042 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 4043 newLp.getDomains()); 4044 } catch (Exception e) { 4045 loge("Exception in setDnsServersForNetwork: " + e); 4046 } 4047 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 4048 if (defaultNai != null && defaultNai.network.netId == netId) { 4049 setDefaultDnsSystemProperties(dnses); 4050 } 4051 flushVmDnsCache(); 4052 } else if (flush) { 4053 try { 4054 mNetd.flushNetworkDnsCache(netId); 4055 } catch (Exception e) { 4056 loge("Exception in flushNetworkDnsCache: " + e); 4057 } 4058 flushVmDnsCache(); 4059 } 4060 } 4061 4062 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4063 int last = 0; 4064 for (InetAddress dns : dnses) { 4065 ++last; 4066 String key = "net.dns" + last; 4067 String value = dns.getHostAddress(); 4068 SystemProperties.set(key, value); 4069 } 4070 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4071 String key = "net.dns" + i; 4072 SystemProperties.set(key, ""); 4073 } 4074 mNumDnsEntries = last; 4075 } 4076 4077 /** 4078 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 4079 * augmented with any stateful capabilities implied from {@code networkAgent} 4080 * (e.g., validated status and captive portal status). 4081 * 4082 * @param nai the network having its capabilities updated. 4083 * @param networkCapabilities the new network capabilities. 4084 */ 4085 private void updateCapabilities(NetworkAgentInfo nai, NetworkCapabilities networkCapabilities) { 4086 // Don't modify caller's NetworkCapabilities. 4087 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4088 if (nai.lastValidated) { 4089 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4090 } else { 4091 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4092 } 4093 if (nai.lastCaptivePortalDetected) { 4094 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4095 } else { 4096 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4097 } 4098 if (!Objects.equals(nai.networkCapabilities, networkCapabilities)) { 4099 final int oldScore = nai.getCurrentScore(); 4100 if (nai.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) != 4101 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED)) { 4102 try { 4103 mNetd.setNetworkPermission(nai.network.netId, 4104 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) ? 4105 null : NetworkManagementService.PERMISSION_SYSTEM); 4106 } catch (RemoteException e) { 4107 loge("Exception in setNetworkPermission: " + e); 4108 } 4109 } 4110 synchronized (nai) { 4111 nai.networkCapabilities = networkCapabilities; 4112 } 4113 rematchAllNetworksAndRequests(nai, oldScore); 4114 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 4115 } 4116 } 4117 4118 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4119 for (int i = 0; i < nai.networkRequests.size(); i++) { 4120 NetworkRequest nr = nai.networkRequests.valueAt(i); 4121 // Don't send listening requests to factories. b/17393458 4122 if (!isRequest(nr)) continue; 4123 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4124 } 4125 } 4126 4127 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4128 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4129 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4130 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4131 networkRequest); 4132 } 4133 } 4134 4135 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4136 int notificationType) { 4137 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4138 Intent intent = new Intent(); 4139 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4140 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4141 nri.mPendingIntentSent = true; 4142 sendIntent(nri.mPendingIntent, intent); 4143 } 4144 // else not handled 4145 } 4146 4147 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4148 mPendingIntentWakeLock.acquire(); 4149 try { 4150 if (DBG) log("Sending " + pendingIntent); 4151 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4152 } catch (PendingIntent.CanceledException e) { 4153 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4154 mPendingIntentWakeLock.release(); 4155 releasePendingNetworkRequest(pendingIntent); 4156 } 4157 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4158 } 4159 4160 @Override 4161 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4162 String resultData, Bundle resultExtras) { 4163 if (DBG) log("Finished sending " + pendingIntent); 4164 mPendingIntentWakeLock.release(); 4165 // Release with a delay so the receiving client has an opportunity to put in its 4166 // own request. 4167 releasePendingNetworkRequestWithDelay(pendingIntent); 4168 } 4169 4170 private void callCallbackForRequest(NetworkRequestInfo nri, 4171 NetworkAgentInfo networkAgent, int notificationType) { 4172 if (nri.messenger == null) return; // Default request has no msgr 4173 Bundle bundle = new Bundle(); 4174 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4175 new NetworkRequest(nri.request)); 4176 Message msg = Message.obtain(); 4177 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4178 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4179 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4180 } 4181 switch (notificationType) { 4182 case ConnectivityManager.CALLBACK_LOSING: { 4183 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4184 break; 4185 } 4186 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4187 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4188 new NetworkCapabilities(networkAgent.networkCapabilities)); 4189 break; 4190 } 4191 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4192 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4193 new LinkProperties(networkAgent.linkProperties)); 4194 break; 4195 } 4196 } 4197 msg.what = notificationType; 4198 msg.setData(bundle); 4199 try { 4200 if (VDBG) { 4201 log("sending notification " + notifyTypeToName(notificationType) + 4202 " for " + nri.request); 4203 } 4204 nri.messenger.send(msg); 4205 } catch (RemoteException e) { 4206 // may occur naturally in the race of binder death. 4207 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4208 } 4209 } 4210 4211 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4212 for (int i = 0; i < nai.networkRequests.size(); i++) { 4213 NetworkRequest nr = nai.networkRequests.valueAt(i); 4214 // Ignore listening requests. 4215 if (!isRequest(nr)) continue; 4216 loge("Dead network still had at least " + nr); 4217 break; 4218 } 4219 nai.asyncChannel.disconnect(); 4220 } 4221 4222 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4223 if (oldNetwork == null) { 4224 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4225 return; 4226 } 4227 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4228 teardownUnneededNetwork(oldNetwork); 4229 } 4230 4231 private void makeDefault(NetworkAgentInfo newNetwork) { 4232 if (DBG) log("Switching to new default network: " + newNetwork); 4233 setupDataActivityTracking(newNetwork); 4234 try { 4235 mNetd.setDefaultNetId(newNetwork.network.netId); 4236 } catch (Exception e) { 4237 loge("Exception setting default network :" + e); 4238 } 4239 notifyLockdownVpn(newNetwork); 4240 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4241 updateTcpBufferSizes(newNetwork); 4242 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4243 } 4244 4245 // Handles a network appearing or improving its score. 4246 // 4247 // - Evaluates all current NetworkRequests that can be 4248 // satisfied by newNetwork, and reassigns to newNetwork 4249 // any such requests for which newNetwork is the best. 4250 // 4251 // - Lingers any validated Networks that as a result are no longer 4252 // needed. A network is needed if it is the best network for 4253 // one or more NetworkRequests, or if it is a VPN. 4254 // 4255 // - Tears down newNetwork if it just became validated 4256 // but turns out to be unneeded. 4257 // 4258 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4259 // networks that have no chance (i.e. even if validated) 4260 // of becoming the highest scoring network. 4261 // 4262 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4263 // it does not remove NetworkRequests that other Networks could better satisfy. 4264 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4265 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4266 // as it performs better by a factor of the number of Networks. 4267 // 4268 // @param newNetwork is the network to be matched against NetworkRequests. 4269 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4270 // performed to tear down unvalidated networks that have no chance (i.e. even if 4271 // validated) of becoming the highest scoring network. 4272 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, 4273 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4274 if (!newNetwork.created) return; 4275 boolean keep = newNetwork.isVPN(); 4276 boolean isNewDefault = false; 4277 NetworkAgentInfo oldDefaultNetwork = null; 4278 if (DBG) log("rematching " + newNetwork.name()); 4279 // Find and migrate to this Network any NetworkRequests for 4280 // which this network is now the best. 4281 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4282 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4283 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4284 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4285 final NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4286 final boolean satisfies = newNetwork.satisfies(nri.request); 4287 if (newNetwork == currentNetwork && satisfies) { 4288 if (VDBG) { 4289 log("Network " + newNetwork.name() + " was already satisfying" + 4290 " request " + nri.request.requestId + ". No change."); 4291 } 4292 keep = true; 4293 continue; 4294 } 4295 4296 // check if it satisfies the NetworkCapabilities 4297 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4298 if (satisfies) { 4299 if (!nri.isRequest) { 4300 // This is not a request, it's a callback listener. 4301 // Add it to newNetwork regardless of score. 4302 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4303 continue; 4304 } 4305 4306 // next check if it's better than any current network we're using for 4307 // this request 4308 if (VDBG) { 4309 log("currentScore = " + 4310 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4311 ", newScore = " + newNetwork.getCurrentScore()); 4312 } 4313 if (currentNetwork == null || 4314 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4315 if (currentNetwork != null) { 4316 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4317 currentNetwork.networkRequests.remove(nri.request.requestId); 4318 currentNetwork.networkLingered.add(nri.request); 4319 affectedNetworks.add(currentNetwork); 4320 } else { 4321 if (DBG) log(" accepting network in place of null"); 4322 } 4323 unlinger(newNetwork); 4324 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4325 if (!newNetwork.addRequest(nri.request)) { 4326 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4327 } 4328 addedRequests.add(nri); 4329 keep = true; 4330 // Tell NetworkFactories about the new score, so they can stop 4331 // trying to connect if they know they cannot match it. 4332 // TODO - this could get expensive if we have alot of requests for this 4333 // network. Think about if there is a way to reduce this. Push 4334 // netid->request mapping to each factory? 4335 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4336 if (mDefaultRequest.requestId == nri.request.requestId) { 4337 isNewDefault = true; 4338 oldDefaultNetwork = currentNetwork; 4339 } 4340 } 4341 } else if (newNetwork.networkRequests.get(nri.request.requestId) != null) { 4342 // If "newNetwork" is listed as satisfying "nri" but no longer satisfies "nri", 4343 // mark it as no longer satisfying "nri". Because networks are processed by 4344 // rematchAllNetworkAndRequests() in descending score order, "currentNetwork" will 4345 // match "newNetwork" before this loop will encounter a "currentNetwork" with higher 4346 // score than "newNetwork" and where "currentNetwork" no longer satisfies "nri". 4347 // This means this code doesn't have to handle the case where "currentNetwork" no 4348 // longer satisfies "nri" when "currentNetwork" does not equal "newNetwork". 4349 if (DBG) { 4350 log("Network " + newNetwork.name() + " stopped satisfying" + 4351 " request " + nri.request.requestId); 4352 } 4353 newNetwork.networkRequests.remove(nri.request.requestId); 4354 if (currentNetwork == newNetwork) { 4355 mNetworkForRequestId.remove(nri.request.requestId); 4356 sendUpdatedScoreToFactories(nri.request, 0); 4357 } else { 4358 if (nri.isRequest == true) { 4359 Slog.wtf(TAG, "BUG: Removing request " + nri.request.requestId + " from " + 4360 newNetwork.name() + 4361 " without updating mNetworkForRequestId or factories!"); 4362 } 4363 } 4364 // TODO: technically, sending CALLBACK_LOST here is 4365 // incorrect if nri is a request (not a listen) and there 4366 // is a replacement network currently connected that can 4367 // satisfy it. However, the only capability that can both 4368 // a) be requested and b) change is NET_CAPABILITY_TRUSTED, 4369 // so this code is only incorrect for a network that loses 4370 // the TRUSTED capability, which is a rare case. 4371 callCallbackForRequest(nri, newNetwork, ConnectivityManager.CALLBACK_LOST); 4372 } 4373 } 4374 // Linger any networks that are no longer needed. 4375 for (NetworkAgentInfo nai : affectedNetworks) { 4376 if (nai.lingering) { 4377 // Already lingered. Nothing to do. This can only happen if "nai" is in 4378 // "affectedNetworks" twice. The reasoning being that to get added to 4379 // "affectedNetworks", "nai" must have been satisfying a NetworkRequest 4380 // (i.e. not lingered) so it could have only been lingered by this loop. 4381 // unneeded(nai) will be false and we'll call unlinger() below which would 4382 // be bad, so handle it here. 4383 } else if (unneeded(nai)) { 4384 linger(nai); 4385 } else { 4386 // Clear nai.networkLingered we might have added above. 4387 unlinger(nai); 4388 } 4389 } 4390 if (isNewDefault) { 4391 // Notify system services that this network is up. 4392 makeDefault(newNetwork); 4393 synchronized (ConnectivityService.this) { 4394 // have a new default network, release the transition wakelock in 4395 // a second if it's held. The second pause is to allow apps 4396 // to reconnect over the new network 4397 if (mNetTransitionWakeLock.isHeld()) { 4398 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4399 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4400 mNetTransitionWakeLockSerialNumber, 0), 4401 1000); 4402 } 4403 } 4404 } 4405 4406 // do this after the default net is switched, but 4407 // before LegacyTypeTracker sends legacy broadcasts 4408 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4409 4410 if (isNewDefault) { 4411 // Maintain the illusion: since the legacy API only 4412 // understands one network at a time, we must pretend 4413 // that the current default network disconnected before 4414 // the new one connected. 4415 if (oldDefaultNetwork != null) { 4416 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4417 oldDefaultNetwork, true); 4418 } 4419 mDefaultInetConditionPublished = newNetwork.lastValidated ? 100 : 0; 4420 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4421 notifyLockdownVpn(newNetwork); 4422 } 4423 4424 if (keep) { 4425 // Notify battery stats service about this network, both the normal 4426 // interface and any stacked links. 4427 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4428 try { 4429 final IBatteryStats bs = BatteryStatsService.getService(); 4430 final int type = newNetwork.networkInfo.getType(); 4431 4432 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4433 bs.noteNetworkInterfaceType(baseIface, type); 4434 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4435 final String stackedIface = stacked.getInterfaceName(); 4436 bs.noteNetworkInterfaceType(stackedIface, type); 4437 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4438 } 4439 } catch (RemoteException ignored) { 4440 } 4441 4442 // This has to happen after the notifyNetworkCallbacks as that tickles each 4443 // ConnectivityManager instance so that legacy requests correctly bind dns 4444 // requests to this network. The legacy users are listening for this bcast 4445 // and will generally do a dns request so they can ensureRouteToHost and if 4446 // they do that before the callbacks happen they'll use the default network. 4447 // 4448 // TODO: Is there still a race here? We send the broadcast 4449 // after sending the callback, but if the app can receive the 4450 // broadcast before the callback, it might still break. 4451 // 4452 // This *does* introduce a race where if the user uses the new api 4453 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4454 // they may get old info. Reverse this after the old startUsing api is removed. 4455 // This is on top of the multiple intent sequencing referenced in the todo above. 4456 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4457 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4458 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4459 // legacy type tracker filters out repeat adds 4460 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4461 } 4462 } 4463 4464 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4465 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4466 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4467 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4468 if (newNetwork.isVPN()) { 4469 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4470 } 4471 } 4472 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4473 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4474 if (unneeded(nai)) { 4475 if (DBG) log("Reaping " + nai.name()); 4476 teardownUnneededNetwork(nai); 4477 } 4478 } 4479 } 4480 } 4481 4482 /** 4483 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4484 * being disconnected. 4485 * @param changed If only one Network's score or capabilities have been modified since the last 4486 * time this function was called, pass this Network in this argument, otherwise pass 4487 * null. 4488 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4489 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4490 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4491 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4492 * network's score. 4493 */ 4494 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4495 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4496 // to avoid the slowness. It is not simply enough to process just "changed", for 4497 // example in the case where "changed"'s score decreases and another network should begin 4498 // satifying a NetworkRequest that "changed" currently satisfies. 4499 4500 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4501 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4502 // rematchNetworkAndRequests() handles. 4503 if (changed != null && oldScore < changed.getCurrentScore()) { 4504 rematchNetworkAndRequests(changed, ReapUnvalidatedNetworks.REAP); 4505 } else { 4506 final NetworkAgentInfo[] nais = mNetworkAgentInfos.values().toArray( 4507 new NetworkAgentInfo[mNetworkAgentInfos.size()]); 4508 // Rematch higher scoring networks first to prevent requests first matching a lower 4509 // scoring network and then a higher scoring network, which could produce multiple 4510 // callbacks and inadvertently unlinger networks. 4511 Arrays.sort(nais); 4512 for (NetworkAgentInfo nai : nais) { 4513 rematchNetworkAndRequests(nai, 4514 // Only reap the last time through the loop. Reaping before all rematching 4515 // is complete could incorrectly teardown a network that hasn't yet been 4516 // rematched. 4517 (nai != nais[nais.length-1]) ? ReapUnvalidatedNetworks.DONT_REAP 4518 : ReapUnvalidatedNetworks.REAP); 4519 } 4520 } 4521 } 4522 4523 private void updateInetCondition(NetworkAgentInfo nai) { 4524 // Don't bother updating until we've graduated to validated at least once. 4525 if (!nai.everValidated) return; 4526 // For now only update icons for default connection. 4527 // TODO: Update WiFi and cellular icons separately. b/17237507 4528 if (!isDefaultNetwork(nai)) return; 4529 4530 int newInetCondition = nai.lastValidated ? 100 : 0; 4531 // Don't repeat publish. 4532 if (newInetCondition == mDefaultInetConditionPublished) return; 4533 4534 mDefaultInetConditionPublished = newInetCondition; 4535 sendInetConditionBroadcast(nai.networkInfo); 4536 } 4537 4538 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4539 if (mLockdownTracker != null) { 4540 if (nai != null && nai.isVPN()) { 4541 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4542 } else { 4543 mLockdownTracker.onNetworkInfoChanged(); 4544 } 4545 } 4546 } 4547 4548 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4549 NetworkInfo.State state = newInfo.getState(); 4550 NetworkInfo oldInfo = null; 4551 final int oldScore = networkAgent.getCurrentScore(); 4552 synchronized (networkAgent) { 4553 oldInfo = networkAgent.networkInfo; 4554 networkAgent.networkInfo = newInfo; 4555 } 4556 notifyLockdownVpn(networkAgent); 4557 4558 if (oldInfo != null && oldInfo.getState() == state) { 4559 if (VDBG) log("ignoring duplicate network state non-change"); 4560 return; 4561 } 4562 if (DBG) { 4563 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4564 (oldInfo == null ? "null" : oldInfo.getState()) + 4565 " to " + state); 4566 } 4567 4568 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4569 try { 4570 // This should never fail. Specifying an already in use NetID will cause failure. 4571 if (networkAgent.isVPN()) { 4572 mNetd.createVirtualNetwork(networkAgent.network.netId, 4573 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4574 (networkAgent.networkMisc == null || 4575 !networkAgent.networkMisc.allowBypass)); 4576 } else { 4577 mNetd.createPhysicalNetwork(networkAgent.network.netId, 4578 networkAgent.networkCapabilities.hasCapability( 4579 NET_CAPABILITY_NOT_RESTRICTED) ? 4580 null : NetworkManagementService.PERMISSION_SYSTEM); 4581 } 4582 } catch (Exception e) { 4583 loge("Error creating network " + networkAgent.network.netId + ": " 4584 + e.getMessage()); 4585 return; 4586 } 4587 networkAgent.created = true; 4588 updateLinkProperties(networkAgent, null); 4589 notifyIfacesChanged(); 4590 4591 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4592 scheduleUnvalidatedPrompt(networkAgent); 4593 4594 if (networkAgent.isVPN()) { 4595 // Temporarily disable the default proxy (not global). 4596 synchronized (mProxyLock) { 4597 if (!mDefaultProxyDisabled) { 4598 mDefaultProxyDisabled = true; 4599 if (mGlobalProxy == null && mDefaultProxy != null) { 4600 sendProxyBroadcast(null); 4601 } 4602 } 4603 } 4604 // TODO: support proxy per network. 4605 } 4606 4607 // Whether a particular NetworkRequest listen should cause signal strength thresholds to 4608 // be communicated to a particular NetworkAgent depends only on the network's immutable, 4609 // capabilities, so it only needs to be done once on initial connect, not every time the 4610 // network's capabilities change. Note that we do this before rematching the network, 4611 // so we could decide to tear it down immediately afterwards. That's fine though - on 4612 // disconnection NetworkAgents should stop any signal strength monitoring they have been 4613 // doing. 4614 updateSignalStrengthThresholds(networkAgent); 4615 4616 // Consider network even though it is not yet validated. 4617 rematchNetworkAndRequests(networkAgent, ReapUnvalidatedNetworks.REAP); 4618 4619 // This has to happen after matching the requests, because callbacks are just requests. 4620 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4621 } else if (state == NetworkInfo.State.DISCONNECTED) { 4622 networkAgent.asyncChannel.disconnect(); 4623 if (networkAgent.isVPN()) { 4624 synchronized (mProxyLock) { 4625 if (mDefaultProxyDisabled) { 4626 mDefaultProxyDisabled = false; 4627 if (mGlobalProxy == null && mDefaultProxy != null) { 4628 sendProxyBroadcast(mDefaultProxy); 4629 } 4630 } 4631 } 4632 } 4633 } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) || 4634 state == NetworkInfo.State.SUSPENDED) { 4635 // going into or coming out of SUSPEND: rescore and notify 4636 if (networkAgent.getCurrentScore() != oldScore) { 4637 rematchAllNetworksAndRequests(networkAgent, oldScore); 4638 } 4639 notifyNetworkCallbacks(networkAgent, (state == NetworkInfo.State.SUSPENDED ? 4640 ConnectivityManager.CALLBACK_SUSPENDED : 4641 ConnectivityManager.CALLBACK_RESUMED)); 4642 mLegacyTypeTracker.update(networkAgent); 4643 } 4644 } 4645 4646 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4647 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4648 if (score < 0) { 4649 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4650 "). Bumping score to min of 0"); 4651 score = 0; 4652 } 4653 4654 final int oldScore = nai.getCurrentScore(); 4655 nai.setCurrentScore(score); 4656 4657 rematchAllNetworksAndRequests(nai, oldScore); 4658 4659 sendUpdatedScoreToFactories(nai); 4660 } 4661 4662 // notify only this one new request of the current state 4663 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4664 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4665 // TODO - read state from monitor to decide what to send. 4666// if (nai.networkMonitor.isLingering()) { 4667// notifyType = NetworkCallbacks.LOSING; 4668// } else if (nai.networkMonitor.isEvaluating()) { 4669// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4670// } 4671 if (nri.mPendingIntent == null) { 4672 callCallbackForRequest(nri, nai, notifyType); 4673 } else { 4674 sendPendingIntentForRequest(nri, nai, notifyType); 4675 } 4676 } 4677 4678 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, DetailedState state, int type) { 4679 // The NetworkInfo we actually send out has no bearing on the real 4680 // state of affairs. For example, if the default connection is mobile, 4681 // and a request for HIPRI has just gone away, we need to pretend that 4682 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4683 // the state to DISCONNECTED, even though the network is of type MOBILE 4684 // and is still connected. 4685 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4686 info.setType(type); 4687 if (state != DetailedState.DISCONNECTED) { 4688 info.setDetailedState(state, null, info.getExtraInfo()); 4689 sendConnectedBroadcast(info); 4690 } else { 4691 info.setDetailedState(state, info.getReason(), info.getExtraInfo()); 4692 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4693 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4694 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4695 if (info.isFailover()) { 4696 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4697 nai.networkInfo.setFailover(false); 4698 } 4699 if (info.getReason() != null) { 4700 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4701 } 4702 if (info.getExtraInfo() != null) { 4703 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4704 } 4705 NetworkAgentInfo newDefaultAgent = null; 4706 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4707 newDefaultAgent = getDefaultNetwork(); 4708 if (newDefaultAgent != null) { 4709 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4710 newDefaultAgent.networkInfo); 4711 } else { 4712 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4713 } 4714 } 4715 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4716 mDefaultInetConditionPublished); 4717 sendStickyBroadcast(intent); 4718 if (newDefaultAgent != null) { 4719 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4720 } 4721 } 4722 } 4723 4724 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4725 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4726 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4727 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4728 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4729 if (VDBG) log(" sending notification for " + nr); 4730 if (nri.mPendingIntent == null) { 4731 callCallbackForRequest(nri, networkAgent, notifyType); 4732 } else { 4733 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4734 } 4735 } 4736 } 4737 4738 private String notifyTypeToName(int notifyType) { 4739 switch (notifyType) { 4740 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4741 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4742 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4743 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4744 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4745 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4746 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4747 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4748 } 4749 return "UNKNOWN"; 4750 } 4751 4752 /** 4753 * Notify other system services that set of active ifaces has changed. 4754 */ 4755 private void notifyIfacesChanged() { 4756 try { 4757 mStatsService.forceUpdateIfaces(); 4758 } catch (Exception ignored) { 4759 } 4760 } 4761 4762 @Override 4763 public boolean addVpnAddress(String address, int prefixLength) { 4764 throwIfLockdownEnabled(); 4765 int user = UserHandle.getUserId(Binder.getCallingUid()); 4766 synchronized (mVpns) { 4767 return mVpns.get(user).addAddress(address, prefixLength); 4768 } 4769 } 4770 4771 @Override 4772 public boolean removeVpnAddress(String address, int prefixLength) { 4773 throwIfLockdownEnabled(); 4774 int user = UserHandle.getUserId(Binder.getCallingUid()); 4775 synchronized (mVpns) { 4776 return mVpns.get(user).removeAddress(address, prefixLength); 4777 } 4778 } 4779 4780 @Override 4781 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4782 throwIfLockdownEnabled(); 4783 int user = UserHandle.getUserId(Binder.getCallingUid()); 4784 boolean success; 4785 synchronized (mVpns) { 4786 success = mVpns.get(user).setUnderlyingNetworks(networks); 4787 } 4788 if (success) { 4789 notifyIfacesChanged(); 4790 } 4791 return success; 4792 } 4793 4794 @Override 4795 public void startNattKeepalive(Network network, int intervalSeconds, Messenger messenger, 4796 IBinder binder, String srcAddr, int srcPort, String dstAddr) { 4797 enforceKeepalivePermission(); 4798 mKeepaliveTracker.startNattKeepalive( 4799 getNetworkAgentInfoForNetwork(network), 4800 intervalSeconds, messenger, binder, 4801 srcAddr, srcPort, dstAddr, ConnectivityManager.PacketKeepalive.NATT_PORT); 4802 } 4803 4804 @Override 4805 public void stopKeepalive(Network network, int slot) { 4806 mHandler.sendMessage(mHandler.obtainMessage( 4807 NetworkAgent.CMD_STOP_PACKET_KEEPALIVE, slot, PacketKeepalive.SUCCESS, network)); 4808 } 4809 4810 @Override 4811 public void factoryReset() { 4812 enforceConnectivityInternalPermission(); 4813 4814 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 4815 return; 4816 } 4817 4818 final int userId = UserHandle.getCallingUserId(); 4819 4820 // Turn airplane mode off 4821 setAirplaneMode(false); 4822 4823 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 4824 // Untether 4825 for (String tether : getTetheredIfaces()) { 4826 untether(tether); 4827 } 4828 } 4829 4830 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 4831 // Turn VPN off 4832 VpnConfig vpnConfig = getVpnConfig(userId); 4833 if (vpnConfig != null) { 4834 if (vpnConfig.legacy) { 4835 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 4836 } else { 4837 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 4838 // in the future without user intervention. 4839 setVpnPackageAuthorization(vpnConfig.user, userId, false); 4840 4841 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 4842 } 4843 } 4844 } 4845 } 4846 4847 @VisibleForTesting 4848 public NetworkMonitor createNetworkMonitor(Context context, Handler handler, 4849 NetworkAgentInfo nai, NetworkRequest defaultRequest) { 4850 return new NetworkMonitor(context, handler, nai, defaultRequest); 4851 } 4852 4853} 4854