ConnectivityService.java revision 8bf977d562b8f7261cf964bdf045b22bdbd92b7d
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.Iterator; 154import java.util.List; 155import java.util.Map; 156import java.util.Objects; 157import java.util.concurrent.atomic.AtomicInteger; 158 159/** 160 * @hide 161 */ 162public class ConnectivityService extends IConnectivityManager.Stub 163 implements PendingIntent.OnFinished { 164 private static final String TAG = "ConnectivityService"; 165 166 private static final boolean DBG = true; 167 private static final boolean VDBG = false; 168 169 private static final boolean LOGD_RULES = false; 170 171 // TODO: create better separation between radio types and network types 172 173 // how long to wait before switching back to a radio's default network 174 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 175 // system property that can override the above value 176 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 177 "android.telephony.apn-restore"; 178 179 // How long to wait before putting up a "This network doesn't have an Internet connection, 180 // connect anyway?" dialog after the user selects a network that doesn't validate. 181 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 182 183 // How long to delay to removal of a pending intent based request. 184 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 185 private final int mReleasePendingIntentDelayMs; 186 187 private Tethering mTethering; 188 189 private final PermissionMonitor mPermissionMonitor; 190 191 private KeyStore mKeyStore; 192 193 @GuardedBy("mVpns") 194 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 195 196 private boolean mLockdownEnabled; 197 private LockdownVpnTracker mLockdownTracker; 198 199 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 200 private Object mRulesLock = new Object(); 201 /** Currently active network rules by UID. */ 202 private SparseIntArray mUidRules = new SparseIntArray(); 203 /** Set of ifaces that are costly. */ 204 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 205 206 final private Context mContext; 207 private int mNetworkPreference; 208 // 0 is full bad, 100 is full good 209 private int mDefaultInetConditionPublished = 0; 210 211 private int mNumDnsEntries; 212 213 private boolean mTestMode; 214 private static ConnectivityService sServiceInstance; 215 216 private INetworkManagementService mNetd; 217 private INetworkStatsService mStatsService; 218 private INetworkPolicyManager mPolicyManager; 219 220 private String mCurrentTcpBufferSizes; 221 222 private static final int ENABLED = 1; 223 private static final int DISABLED = 0; 224 225 private enum ReapUnvalidatedNetworks { 226 // Tear down networks that have no chance (e.g. even if validated) of becoming 227 // the highest scoring network satisfying a NetworkRequest. This should be passed when 228 // all networks have been rematched against all NetworkRequests. 229 REAP, 230 // Don't reap networks. This should be passed when some networks have not yet been 231 // rematched against all NetworkRequests. 232 DONT_REAP 233 }; 234 235 /** 236 * used internally to change our mobile data enabled flag 237 */ 238 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 239 240 /** 241 * used internally to clear a wakelock when transitioning 242 * from one net to another. Clear happens when we get a new 243 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 244 * after a timeout if no network is found (typically 1 min). 245 */ 246 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 247 248 /** 249 * used internally to reload global proxy settings 250 */ 251 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 252 253 /** 254 * used internally to send a sticky broadcast delayed. 255 */ 256 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 257 258 /** 259 * PAC manager has received new port. 260 */ 261 private static final int EVENT_PROXY_HAS_CHANGED = 16; 262 263 /** 264 * used internally when registering NetworkFactories 265 * obj = NetworkFactoryInfo 266 */ 267 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 268 269 /** 270 * used internally when registering NetworkAgents 271 * obj = Messenger 272 */ 273 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 274 275 /** 276 * used to add a network request 277 * includes a NetworkRequestInfo 278 */ 279 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 280 281 /** 282 * indicates a timeout period is over - check if we had a network yet or not 283 * and if not, call the timeout calback (but leave the request live until they 284 * cancel it. 285 * includes a NetworkRequestInfo 286 */ 287 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 288 289 /** 290 * used to add a network listener - no request 291 * includes a NetworkRequestInfo 292 */ 293 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 294 295 /** 296 * used to remove a network request, either a listener or a real request 297 * arg1 = UID of caller 298 * obj = NetworkRequest 299 */ 300 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 301 302 /** 303 * used internally when registering NetworkFactories 304 * obj = Messenger 305 */ 306 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 307 308 /** 309 * used internally to expire a wakelock when transitioning 310 * from one net to another. Expire happens when we fail to find 311 * a new network (typically after 1 minute) - 312 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 313 * a replacement network. 314 */ 315 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 316 317 /** 318 * Used internally to indicate the system is ready. 319 */ 320 private static final int EVENT_SYSTEM_READY = 25; 321 322 /** 323 * used to add a network request with a pending intent 324 * obj = NetworkRequestInfo 325 */ 326 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 327 328 /** 329 * used to remove a pending intent and its associated network request. 330 * arg1 = UID of caller 331 * obj = PendingIntent 332 */ 333 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 334 335 /** 336 * used to specify whether a network should be used even if unvalidated. 337 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 338 * arg2 = whether to remember this choice in the future (1 or 0) 339 * obj = network 340 */ 341 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 342 343 /** 344 * used to ask the user to confirm a connection to an unvalidated network. 345 * obj = network 346 */ 347 private static final int EVENT_PROMPT_UNVALIDATED = 29; 348 349 /** 350 * used internally to (re)configure mobile data always-on settings. 351 */ 352 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 353 354 /** 355 * used to add a network listener with a pending intent 356 * obj = NetworkRequestInfo 357 */ 358 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 359 360 /** Handler used for internal events. */ 361 final private InternalHandler mHandler; 362 /** Handler used for incoming {@link NetworkStateTracker} events. */ 363 final private NetworkStateTrackerHandler mTrackerHandler; 364 365 private boolean mSystemReady; 366 private Intent mInitialBroadcast; 367 368 private PowerManager.WakeLock mNetTransitionWakeLock; 369 private String mNetTransitionWakeLockCausedBy = ""; 370 private int mNetTransitionWakeLockSerialNumber; 371 private int mNetTransitionWakeLockTimeout; 372 private final PowerManager.WakeLock mPendingIntentWakeLock; 373 374 private InetAddress mDefaultDns; 375 376 // used in DBG mode to track inet condition reports 377 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 378 private ArrayList mInetLog; 379 380 // track the current default http proxy - tell the world if we get a new one (real change) 381 private volatile ProxyInfo mDefaultProxy = null; 382 private Object mProxyLock = new Object(); 383 private boolean mDefaultProxyDisabled = false; 384 385 // track the global proxy. 386 private ProxyInfo mGlobalProxy = null; 387 388 private PacManager mPacManager = null; 389 390 final private SettingsObserver mSettingsObserver; 391 392 private UserManager mUserManager; 393 394 NetworkConfig[] mNetConfigs; 395 int mNetworksDefined; 396 397 // the set of network types that can only be enabled by system/sig apps 398 List mProtectedNetworks; 399 400 private DataConnectionStats mDataConnectionStats; 401 402 TelephonyManager mTelephonyManager; 403 404 private KeepaliveTracker mKeepaliveTracker; 405 406 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 407 private final static int MIN_NET_ID = 100; // some reserved marks 408 private final static int MAX_NET_ID = 65535; 409 private int mNextNetId = MIN_NET_ID; 410 411 // sequence number of NetworkRequests 412 private int mNextNetworkRequestId = 1; 413 414 // NetworkRequest activity String log entries. 415 private static final int MAX_NETWORK_REQUEST_LOGS = 20; 416 private final LocalLog mNetworkRequestInfoLogs = new LocalLog(MAX_NETWORK_REQUEST_LOGS); 417 418 // Array of <Network,ReadOnlyLocalLogs> tracking network validation and results 419 private static final int MAX_VALIDATION_LOGS = 10; 420 private final ArrayDeque<Pair<Network,ReadOnlyLocalLog>> mValidationLogs = 421 new ArrayDeque<Pair<Network,ReadOnlyLocalLog>>(MAX_VALIDATION_LOGS); 422 423 private void addValidationLogs(ReadOnlyLocalLog log, Network network) { 424 synchronized(mValidationLogs) { 425 while (mValidationLogs.size() >= MAX_VALIDATION_LOGS) { 426 mValidationLogs.removeLast(); 427 } 428 mValidationLogs.addFirst(new Pair(network, log)); 429 } 430 } 431 432 /** 433 * Implements support for the legacy "one network per network type" model. 434 * 435 * We used to have a static array of NetworkStateTrackers, one for each 436 * network type, but that doesn't work any more now that we can have, 437 * for example, more that one wifi network. This class stores all the 438 * NetworkAgentInfo objects that support a given type, but the legacy 439 * API will only see the first one. 440 * 441 * It serves two main purposes: 442 * 443 * 1. Provide information about "the network for a given type" (since this 444 * API only supports one). 445 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 446 * the first network for a given type changes, or if the default network 447 * changes. 448 */ 449 private class LegacyTypeTracker { 450 451 private static final boolean DBG = true; 452 private static final boolean VDBG = false; 453 private static final String TAG = "CSLegacyTypeTracker"; 454 455 /** 456 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 457 * Each list holds references to all NetworkAgentInfos that are used to 458 * satisfy requests for that network type. 459 * 460 * This array is built out at startup such that an unsupported network 461 * doesn't get an ArrayList instance, making this a tristate: 462 * unsupported, supported but not active and active. 463 * 464 * The actual lists are populated when we scan the network types that 465 * are supported on this device. 466 */ 467 private ArrayList<NetworkAgentInfo> mTypeLists[]; 468 469 public LegacyTypeTracker() { 470 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 471 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 472 } 473 474 public void addSupportedType(int type) { 475 if (mTypeLists[type] != null) { 476 throw new IllegalStateException( 477 "legacy list for type " + type + "already initialized"); 478 } 479 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 480 } 481 482 public boolean isTypeSupported(int type) { 483 return isNetworkTypeValid(type) && mTypeLists[type] != null; 484 } 485 486 public NetworkAgentInfo getNetworkForType(int type) { 487 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 488 return mTypeLists[type].get(0); 489 } else { 490 return null; 491 } 492 } 493 494 private void maybeLogBroadcast(NetworkAgentInfo nai, DetailedState state, int type, 495 boolean isDefaultNetwork) { 496 if (DBG) { 497 log("Sending " + state + 498 " broadcast for type " + type + " " + nai.name() + 499 " isDefaultNetwork=" + isDefaultNetwork); 500 } 501 } 502 503 /** Adds the given network to the specified legacy type list. */ 504 public void add(int type, NetworkAgentInfo nai) { 505 if (!isTypeSupported(type)) { 506 return; // Invalid network type. 507 } 508 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 509 510 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 511 if (list.contains(nai)) { 512 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 513 return; 514 } 515 516 list.add(nai); 517 518 // Send a broadcast if this is the first network of its type or if it's the default. 519 final boolean isDefaultNetwork = isDefaultNetwork(nai); 520 if (list.size() == 1 || isDefaultNetwork) { 521 maybeLogBroadcast(nai, DetailedState.CONNECTED, type, isDefaultNetwork); 522 sendLegacyNetworkBroadcast(nai, DetailedState.CONNECTED, type); 523 } 524 } 525 526 /** Removes the given network from the specified legacy type list. */ 527 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 528 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 529 if (list == null || list.isEmpty()) { 530 return; 531 } 532 533 final boolean wasFirstNetwork = list.get(0).equals(nai); 534 535 if (!list.remove(nai)) { 536 return; 537 } 538 539 final DetailedState state = DetailedState.DISCONNECTED; 540 541 if (wasFirstNetwork || wasDefault) { 542 maybeLogBroadcast(nai, state, type, wasDefault); 543 sendLegacyNetworkBroadcast(nai, state, type); 544 } 545 546 if (!list.isEmpty() && wasFirstNetwork) { 547 if (DBG) log("Other network available for type " + type + 548 ", sending connected broadcast"); 549 final NetworkAgentInfo replacement = list.get(0); 550 maybeLogBroadcast(replacement, state, type, isDefaultNetwork(replacement)); 551 sendLegacyNetworkBroadcast(replacement, state, type); 552 } 553 } 554 555 /** Removes the given network from all legacy type lists. */ 556 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 557 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 558 for (int type = 0; type < mTypeLists.length; type++) { 559 remove(type, nai, wasDefault); 560 } 561 } 562 563 // send out another legacy broadcast - currently only used for suspend/unsuspend 564 // toggle 565 public void update(NetworkAgentInfo nai) { 566 final boolean isDefault = isDefaultNetwork(nai); 567 final DetailedState state = nai.networkInfo.getDetailedState(); 568 for (int type = 0; type < mTypeLists.length; type++) { 569 final ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 570 final boolean contains = (list != null && list.contains(nai)); 571 final boolean isFirst = (list != null && list.size() > 0 && nai == list.get(0)); 572 if (isFirst || (contains && isDefault)) { 573 maybeLogBroadcast(nai, state, type, isDefault); 574 sendLegacyNetworkBroadcast(nai, state, type); 575 } 576 } 577 } 578 579 private String naiToString(NetworkAgentInfo nai) { 580 String name = (nai != null) ? nai.name() : "null"; 581 String state = (nai.networkInfo != null) ? 582 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 583 "???/???"; 584 return name + " " + state; 585 } 586 587 public void dump(IndentingPrintWriter pw) { 588 pw.println("mLegacyTypeTracker:"); 589 pw.increaseIndent(); 590 pw.print("Supported types:"); 591 for (int type = 0; type < mTypeLists.length; type++) { 592 if (mTypeLists[type] != null) pw.print(" " + type); 593 } 594 pw.println(); 595 pw.println("Current state:"); 596 pw.increaseIndent(); 597 for (int type = 0; type < mTypeLists.length; type++) { 598 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 599 for (NetworkAgentInfo nai : mTypeLists[type]) { 600 pw.println(type + " " + naiToString(nai)); 601 } 602 } 603 pw.decreaseIndent(); 604 pw.decreaseIndent(); 605 pw.println(); 606 } 607 608 // This class needs its own log method because it has a different TAG. 609 private void log(String s) { 610 Slog.d(TAG, s); 611 } 612 613 } 614 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 615 616 public ConnectivityService(Context context, INetworkManagementService netManager, 617 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 618 if (DBG) log("ConnectivityService starting up"); 619 620 mDefaultRequest = createInternetRequestForTransport(-1); 621 NetworkRequestInfo defaultNRI = new NetworkRequestInfo(null, mDefaultRequest, 622 new Binder(), NetworkRequestInfo.REQUEST); 623 mNetworkRequests.put(mDefaultRequest, defaultNRI); 624 mNetworkRequestInfoLogs.log("REGISTER " + defaultNRI); 625 626 mDefaultMobileDataRequest = createInternetRequestForTransport( 627 NetworkCapabilities.TRANSPORT_CELLULAR); 628 629 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 630 handlerThread.start(); 631 mHandler = new InternalHandler(handlerThread.getLooper()); 632 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 633 634 // setup our unique device name 635 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 636 String id = Settings.Secure.getString(context.getContentResolver(), 637 Settings.Secure.ANDROID_ID); 638 if (id != null && id.length() > 0) { 639 String name = new String("android-").concat(id); 640 SystemProperties.set("net.hostname", name); 641 } 642 } 643 644 // read our default dns server ip 645 String dns = Settings.Global.getString(context.getContentResolver(), 646 Settings.Global.DEFAULT_DNS_SERVER); 647 if (dns == null || dns.length() == 0) { 648 dns = context.getResources().getString( 649 com.android.internal.R.string.config_default_dns_server); 650 } 651 try { 652 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 653 } catch (IllegalArgumentException e) { 654 loge("Error setting defaultDns using " + dns); 655 } 656 657 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 658 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 659 660 mContext = checkNotNull(context, "missing Context"); 661 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 662 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 663 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 664 mKeyStore = KeyStore.getInstance(); 665 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 666 667 try { 668 mPolicyManager.registerListener(mPolicyListener); 669 } catch (RemoteException e) { 670 // ouch, no rules updates means some processes may never get network 671 loge("unable to register INetworkPolicyListener" + e.toString()); 672 } 673 674 final PowerManager powerManager = (PowerManager) context.getSystemService( 675 Context.POWER_SERVICE); 676 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 677 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 678 com.android.internal.R.integer.config_networkTransitionTimeout); 679 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 680 681 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 682 683 // TODO: What is the "correct" way to do determine if this is a wifi only device? 684 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 685 log("wifiOnly=" + wifiOnly); 686 String[] naStrings = context.getResources().getStringArray( 687 com.android.internal.R.array.networkAttributes); 688 for (String naString : naStrings) { 689 try { 690 NetworkConfig n = new NetworkConfig(naString); 691 if (VDBG) log("naString=" + naString + " config=" + n); 692 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 693 loge("Error in networkAttributes - ignoring attempt to define type " + 694 n.type); 695 continue; 696 } 697 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 698 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 699 n.type); 700 continue; 701 } 702 if (mNetConfigs[n.type] != null) { 703 loge("Error in networkAttributes - ignoring attempt to redefine type " + 704 n.type); 705 continue; 706 } 707 mLegacyTypeTracker.addSupportedType(n.type); 708 709 mNetConfigs[n.type] = n; 710 mNetworksDefined++; 711 } catch(Exception e) { 712 // ignore it - leave the entry null 713 } 714 } 715 716 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 717 if (mNetConfigs[TYPE_VPN] == null) { 718 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 719 // don't need to add TYPE_VPN to mNetConfigs. 720 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 721 mNetworksDefined++; // used only in the log() statement below. 722 } 723 724 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 725 726 mProtectedNetworks = new ArrayList<Integer>(); 727 int[] protectedNetworks = context.getResources().getIntArray( 728 com.android.internal.R.array.config_protectedNetworks); 729 for (int p : protectedNetworks) { 730 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 731 mProtectedNetworks.add(p); 732 } else { 733 if (DBG) loge("Ignoring protectedNetwork " + p); 734 } 735 } 736 737 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 738 && SystemProperties.get("ro.build.type").equals("eng"); 739 740 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 741 742 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 743 744 //set up the listener for user state for creating user VPNs 745 IntentFilter intentFilter = new IntentFilter(); 746 intentFilter.addAction(Intent.ACTION_USER_STARTING); 747 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 748 mContext.registerReceiverAsUser( 749 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 750 751 try { 752 mNetd.registerObserver(mTethering); 753 mNetd.registerObserver(mDataActivityObserver); 754 } catch (RemoteException e) { 755 loge("Error registering observer :" + e); 756 } 757 758 if (DBG) { 759 mInetLog = new ArrayList(); 760 } 761 762 mSettingsObserver = new SettingsObserver(mContext, mHandler); 763 registerSettingsCallbacks(); 764 765 mDataConnectionStats = new DataConnectionStats(mContext); 766 mDataConnectionStats.startMonitoring(); 767 768 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 769 770 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 771 772 mKeepaliveTracker = new KeepaliveTracker(mHandler); 773 } 774 775 private NetworkRequest createInternetRequestForTransport(int transportType) { 776 NetworkCapabilities netCap = new NetworkCapabilities(); 777 netCap.addCapability(NET_CAPABILITY_INTERNET); 778 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 779 if (transportType > -1) { 780 netCap.addTransportType(transportType); 781 } 782 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 783 } 784 785 private void handleMobileDataAlwaysOn() { 786 final boolean enable = (Settings.Global.getInt( 787 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 788 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 789 if (enable == isEnabled) { 790 return; // Nothing to do. 791 } 792 793 if (enable) { 794 handleRegisterNetworkRequest(new NetworkRequestInfo( 795 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestInfo.REQUEST)); 796 } else { 797 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 798 } 799 } 800 801 private void registerSettingsCallbacks() { 802 // Watch for global HTTP proxy changes. 803 mSettingsObserver.observe( 804 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 805 EVENT_APPLY_GLOBAL_HTTP_PROXY); 806 807 // Watch for whether or not to keep mobile data always on. 808 mSettingsObserver.observe( 809 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 810 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 811 } 812 813 private synchronized int nextNetworkRequestId() { 814 return mNextNetworkRequestId++; 815 } 816 817 @VisibleForTesting 818 protected int reserveNetId() { 819 synchronized (mNetworkForNetId) { 820 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 821 int netId = mNextNetId; 822 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 823 // Make sure NetID unused. http://b/16815182 824 if (!mNetIdInUse.get(netId)) { 825 mNetIdInUse.put(netId, true); 826 return netId; 827 } 828 } 829 } 830 throw new IllegalStateException("No free netIds"); 831 } 832 833 private NetworkState getFilteredNetworkState(int networkType, int uid) { 834 NetworkInfo info = null; 835 LinkProperties lp = null; 836 NetworkCapabilities nc = null; 837 Network network = null; 838 String subscriberId = null; 839 840 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 841 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 842 if (nai != null) { 843 synchronized (nai) { 844 info = new NetworkInfo(nai.networkInfo); 845 lp = new LinkProperties(nai.linkProperties); 846 nc = new NetworkCapabilities(nai.networkCapabilities); 847 // Network objects are outwardly immutable so there is no point to duplicating. 848 // Duplicating also precludes sharing socket factories and connection pools. 849 network = nai.network; 850 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 851 } 852 info.setType(networkType); 853 } else { 854 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 855 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 856 info.setIsAvailable(true); 857 lp = new LinkProperties(); 858 nc = new NetworkCapabilities(); 859 network = null; 860 } 861 info = getFilteredNetworkInfo(info, lp, uid); 862 } 863 864 return new NetworkState(info, lp, nc, network, subscriberId, null); 865 } 866 867 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 868 if (network == null) { 869 return null; 870 } 871 synchronized (mNetworkForNetId) { 872 return mNetworkForNetId.get(network.netId); 873 } 874 }; 875 876 private Network[] getVpnUnderlyingNetworks(int uid) { 877 if (!mLockdownEnabled) { 878 int user = UserHandle.getUserId(uid); 879 synchronized (mVpns) { 880 Vpn vpn = mVpns.get(user); 881 if (vpn != null && vpn.appliesToUid(uid)) { 882 return vpn.getUnderlyingNetworks(); 883 } 884 } 885 } 886 return null; 887 } 888 889 private NetworkState getUnfilteredActiveNetworkState(int uid) { 890 NetworkInfo info = null; 891 LinkProperties lp = null; 892 NetworkCapabilities nc = null; 893 Network network = null; 894 String subscriberId = null; 895 896 NetworkAgentInfo nai = getDefaultNetwork(); 897 898 final Network[] networks = getVpnUnderlyingNetworks(uid); 899 if (networks != null) { 900 // getUnderlyingNetworks() returns: 901 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 902 // empty array => the VPN explicitly said "no default network". 903 // non-empty array => the VPN specified one or more default networks; we use the 904 // first one. 905 if (networks.length > 0) { 906 nai = getNetworkAgentInfoForNetwork(networks[0]); 907 } else { 908 nai = null; 909 } 910 } 911 912 if (nai != null) { 913 synchronized (nai) { 914 info = new NetworkInfo(nai.networkInfo); 915 lp = new LinkProperties(nai.linkProperties); 916 nc = new NetworkCapabilities(nai.networkCapabilities); 917 // Network objects are outwardly immutable so there is no point to duplicating. 918 // Duplicating also precludes sharing socket factories and connection pools. 919 network = nai.network; 920 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 921 } 922 } 923 924 return new NetworkState(info, lp, nc, network, subscriberId, null); 925 } 926 927 /** 928 * Check if UID should be blocked from using the network with the given LinkProperties. 929 */ 930 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 931 final boolean networkCostly; 932 final int uidRules; 933 934 final String iface = (lp == null ? "" : lp.getInterfaceName()); 935 synchronized (mRulesLock) { 936 networkCostly = mMeteredIfaces.contains(iface); 937 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 938 } 939 940 if ((uidRules & RULE_REJECT_ALL) != 0 941 || (networkCostly && (uidRules & RULE_REJECT_METERED) != 0)) { 942 return true; 943 } 944 945 // no restrictive rules; network is visible 946 return false; 947 } 948 949 /** 950 * Return a filtered {@link NetworkInfo}, potentially marked 951 * {@link DetailedState#BLOCKED} based on 952 * {@link #isNetworkWithLinkPropertiesBlocked}. 953 */ 954 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 955 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 956 // network is blocked; clone and override state 957 info = new NetworkInfo(info); 958 info.setDetailedState(DetailedState.BLOCKED, null, null); 959 if (VDBG) { 960 log("returning Blocked NetworkInfo for ifname=" + 961 lp.getInterfaceName() + ", uid=" + uid); 962 } 963 } 964 if (info != null && mLockdownTracker != null) { 965 info = mLockdownTracker.augmentNetworkInfo(info); 966 if (VDBG) log("returning Locked NetworkInfo"); 967 } 968 return info; 969 } 970 971 /** 972 * Return NetworkInfo for the active (i.e., connected) network interface. 973 * It is assumed that at most one network is active at a time. If more 974 * than one is active, it is indeterminate which will be returned. 975 * @return the info for the active network, or {@code null} if none is 976 * active 977 */ 978 @Override 979 public NetworkInfo getActiveNetworkInfo() { 980 enforceAccessPermission(); 981 final int uid = Binder.getCallingUid(); 982 NetworkState state = getUnfilteredActiveNetworkState(uid); 983 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 984 } 985 986 @Override 987 public Network getActiveNetwork() { 988 enforceAccessPermission(); 989 final int uid = Binder.getCallingUid(); 990 final int user = UserHandle.getUserId(uid); 991 int vpnNetId = NETID_UNSET; 992 synchronized (mVpns) { 993 final Vpn vpn = mVpns.get(user); 994 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 995 } 996 NetworkAgentInfo nai; 997 if (vpnNetId != NETID_UNSET) { 998 synchronized (mNetworkForNetId) { 999 nai = mNetworkForNetId.get(vpnNetId); 1000 } 1001 if (nai != null) return nai.network; 1002 } 1003 nai = getDefaultNetwork(); 1004 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 1005 return nai != null ? nai.network : null; 1006 } 1007 1008 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1009 enforceAccessPermission(); 1010 final int uid = Binder.getCallingUid(); 1011 NetworkState state = getUnfilteredActiveNetworkState(uid); 1012 return state.networkInfo; 1013 } 1014 1015 @Override 1016 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1017 enforceConnectivityInternalPermission(); 1018 NetworkState state = getUnfilteredActiveNetworkState(uid); 1019 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1020 } 1021 1022 @Override 1023 public NetworkInfo getNetworkInfo(int networkType) { 1024 enforceAccessPermission(); 1025 final int uid = Binder.getCallingUid(); 1026 if (getVpnUnderlyingNetworks(uid) != null) { 1027 // A VPN is active, so we may need to return one of its underlying networks. This 1028 // information is not available in LegacyTypeTracker, so we have to get it from 1029 // getUnfilteredActiveNetworkState. 1030 NetworkState state = getUnfilteredActiveNetworkState(uid); 1031 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1032 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1033 } 1034 } 1035 NetworkState state = getFilteredNetworkState(networkType, uid); 1036 return state.networkInfo; 1037 } 1038 1039 @Override 1040 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1041 enforceAccessPermission(); 1042 final int uid = Binder.getCallingUid(); 1043 NetworkInfo info = null; 1044 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1045 if (nai != null) { 1046 synchronized (nai) { 1047 info = new NetworkInfo(nai.networkInfo); 1048 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1049 } 1050 } 1051 return info; 1052 } 1053 1054 @Override 1055 public NetworkInfo[] getAllNetworkInfo() { 1056 enforceAccessPermission(); 1057 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1058 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1059 networkType++) { 1060 NetworkInfo info = getNetworkInfo(networkType); 1061 if (info != null) { 1062 result.add(info); 1063 } 1064 } 1065 return result.toArray(new NetworkInfo[result.size()]); 1066 } 1067 1068 @Override 1069 public Network getNetworkForType(int networkType) { 1070 enforceAccessPermission(); 1071 final int uid = Binder.getCallingUid(); 1072 NetworkState state = getFilteredNetworkState(networkType, uid); 1073 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1074 return state.network; 1075 } 1076 return null; 1077 } 1078 1079 @Override 1080 public Network[] getAllNetworks() { 1081 enforceAccessPermission(); 1082 synchronized (mNetworkForNetId) { 1083 final Network[] result = new Network[mNetworkForNetId.size()]; 1084 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1085 result[i] = mNetworkForNetId.valueAt(i).network; 1086 } 1087 return result; 1088 } 1089 } 1090 1091 @Override 1092 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1093 // The basic principle is: if an app's traffic could possibly go over a 1094 // network, without the app doing anything multinetwork-specific, 1095 // (hence, by "default"), then include that network's capabilities in 1096 // the array. 1097 // 1098 // In the normal case, app traffic only goes over the system's default 1099 // network connection, so that's the only network returned. 1100 // 1101 // With a VPN in force, some app traffic may go into the VPN, and thus 1102 // over whatever underlying networks the VPN specifies, while other app 1103 // traffic may go over the system default network (e.g.: a split-tunnel 1104 // VPN, or an app disallowed by the VPN), so the set of networks 1105 // returned includes the VPN's underlying networks and the system 1106 // default. 1107 enforceAccessPermission(); 1108 1109 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1110 1111 NetworkAgentInfo nai = getDefaultNetwork(); 1112 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1113 if (nc != null) { 1114 result.put(nai.network, nc); 1115 } 1116 1117 if (!mLockdownEnabled) { 1118 synchronized (mVpns) { 1119 Vpn vpn = mVpns.get(userId); 1120 if (vpn != null) { 1121 Network[] networks = vpn.getUnderlyingNetworks(); 1122 if (networks != null) { 1123 for (Network network : networks) { 1124 nai = getNetworkAgentInfoForNetwork(network); 1125 nc = getNetworkCapabilitiesInternal(nai); 1126 if (nc != null) { 1127 result.put(network, nc); 1128 } 1129 } 1130 } 1131 } 1132 } 1133 } 1134 1135 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1136 out = result.values().toArray(out); 1137 return out; 1138 } 1139 1140 @Override 1141 public boolean isNetworkSupported(int networkType) { 1142 enforceAccessPermission(); 1143 return mLegacyTypeTracker.isTypeSupported(networkType); 1144 } 1145 1146 /** 1147 * Return LinkProperties for the active (i.e., connected) default 1148 * network interface. It is assumed that at most one default network 1149 * is active at a time. If more than one is active, it is indeterminate 1150 * which will be returned. 1151 * @return the ip properties for the active network, or {@code null} if 1152 * none is active 1153 */ 1154 @Override 1155 public LinkProperties getActiveLinkProperties() { 1156 enforceAccessPermission(); 1157 final int uid = Binder.getCallingUid(); 1158 NetworkState state = getUnfilteredActiveNetworkState(uid); 1159 return state.linkProperties; 1160 } 1161 1162 @Override 1163 public LinkProperties getLinkPropertiesForType(int networkType) { 1164 enforceAccessPermission(); 1165 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1166 if (nai != null) { 1167 synchronized (nai) { 1168 return new LinkProperties(nai.linkProperties); 1169 } 1170 } 1171 return null; 1172 } 1173 1174 // TODO - this should be ALL networks 1175 @Override 1176 public LinkProperties getLinkProperties(Network network) { 1177 enforceAccessPermission(); 1178 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1179 if (nai != null) { 1180 synchronized (nai) { 1181 return new LinkProperties(nai.linkProperties); 1182 } 1183 } 1184 return null; 1185 } 1186 1187 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1188 if (nai != null) { 1189 synchronized (nai) { 1190 if (nai.networkCapabilities != null) { 1191 return new NetworkCapabilities(nai.networkCapabilities); 1192 } 1193 } 1194 } 1195 return null; 1196 } 1197 1198 @Override 1199 public NetworkCapabilities getNetworkCapabilities(Network network) { 1200 enforceAccessPermission(); 1201 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1202 } 1203 1204 @Override 1205 public NetworkState[] getAllNetworkState() { 1206 // Require internal since we're handing out IMSI details 1207 enforceConnectivityInternalPermission(); 1208 1209 final ArrayList<NetworkState> result = Lists.newArrayList(); 1210 for (Network network : getAllNetworks()) { 1211 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1212 if (nai != null) { 1213 synchronized (nai) { 1214 final String subscriberId = (nai.networkMisc != null) 1215 ? nai.networkMisc.subscriberId : null; 1216 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1217 nai.networkCapabilities, network, subscriberId, null)); 1218 } 1219 } 1220 } 1221 return result.toArray(new NetworkState[result.size()]); 1222 } 1223 1224 @Override 1225 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1226 enforceAccessPermission(); 1227 final int uid = Binder.getCallingUid(); 1228 final long token = Binder.clearCallingIdentity(); 1229 try { 1230 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1231 if (state.networkInfo != null) { 1232 try { 1233 return mPolicyManager.getNetworkQuotaInfo(state); 1234 } catch (RemoteException e) { 1235 } 1236 } 1237 return null; 1238 } finally { 1239 Binder.restoreCallingIdentity(token); 1240 } 1241 } 1242 1243 @Override 1244 public boolean isActiveNetworkMetered() { 1245 enforceAccessPermission(); 1246 final int uid = Binder.getCallingUid(); 1247 final long token = Binder.clearCallingIdentity(); 1248 try { 1249 return isActiveNetworkMeteredUnchecked(uid); 1250 } finally { 1251 Binder.restoreCallingIdentity(token); 1252 } 1253 } 1254 1255 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1256 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1257 if (state.networkInfo != null) { 1258 try { 1259 return mPolicyManager.isNetworkMetered(state); 1260 } catch (RemoteException e) { 1261 } 1262 } 1263 return false; 1264 } 1265 1266 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1267 @Override 1268 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1269 int deviceType = Integer.parseInt(label); 1270 sendDataActivityBroadcast(deviceType, active, tsNanos); 1271 } 1272 }; 1273 1274 /** 1275 * Ensure that a network route exists to deliver traffic to the specified 1276 * host via the specified network interface. 1277 * @param networkType the type of the network over which traffic to the 1278 * specified host is to be routed 1279 * @param hostAddress the IP address of the host to which the route is 1280 * desired 1281 * @return {@code true} on success, {@code false} on failure 1282 */ 1283 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1284 enforceChangePermission(); 1285 if (mProtectedNetworks.contains(networkType)) { 1286 enforceConnectivityInternalPermission(); 1287 } 1288 1289 InetAddress addr; 1290 try { 1291 addr = InetAddress.getByAddress(hostAddress); 1292 } catch (UnknownHostException e) { 1293 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1294 return false; 1295 } 1296 1297 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1298 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1299 return false; 1300 } 1301 1302 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1303 if (nai == null) { 1304 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1305 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1306 } else { 1307 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1308 } 1309 return false; 1310 } 1311 1312 DetailedState netState; 1313 synchronized (nai) { 1314 netState = nai.networkInfo.getDetailedState(); 1315 } 1316 1317 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1318 if (VDBG) { 1319 log("requestRouteToHostAddress on down network " 1320 + "(" + networkType + ") - dropped" 1321 + " netState=" + netState); 1322 } 1323 return false; 1324 } 1325 1326 final int uid = Binder.getCallingUid(); 1327 final long token = Binder.clearCallingIdentity(); 1328 try { 1329 LinkProperties lp; 1330 int netId; 1331 synchronized (nai) { 1332 lp = nai.linkProperties; 1333 netId = nai.network.netId; 1334 } 1335 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1336 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1337 return ok; 1338 } finally { 1339 Binder.restoreCallingIdentity(token); 1340 } 1341 } 1342 1343 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1344 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1345 if (bestRoute == null) { 1346 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1347 } else { 1348 String iface = bestRoute.getInterface(); 1349 if (bestRoute.getGateway().equals(addr)) { 1350 // if there is no better route, add the implied hostroute for our gateway 1351 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1352 } else { 1353 // if we will connect to this through another route, add a direct route 1354 // to it's gateway 1355 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1356 } 1357 } 1358 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1359 try { 1360 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1361 } catch (Exception e) { 1362 // never crash - catch them all 1363 if (DBG) loge("Exception trying to add a route: " + e); 1364 return false; 1365 } 1366 return true; 1367 } 1368 1369 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1370 @Override 1371 public void onUidRulesChanged(int uid, int uidRules) { 1372 // caller is NPMS, since we only register with them 1373 if (LOGD_RULES) { 1374 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1375 } 1376 1377 synchronized (mRulesLock) { 1378 // skip update when we've already applied rules 1379 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1380 if (oldRules == uidRules) return; 1381 1382 mUidRules.put(uid, uidRules); 1383 } 1384 1385 // TODO: notify UID when it has requested targeted updates 1386 } 1387 1388 @Override 1389 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1390 // caller is NPMS, since we only register with them 1391 if (LOGD_RULES) { 1392 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1393 } 1394 1395 synchronized (mRulesLock) { 1396 mMeteredIfaces.clear(); 1397 for (String iface : meteredIfaces) { 1398 mMeteredIfaces.add(iface); 1399 } 1400 } 1401 } 1402 1403 @Override 1404 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1405 // caller is NPMS, since we only register with them 1406 if (LOGD_RULES) { 1407 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1408 } 1409 } 1410 }; 1411 1412 /** 1413 * Require that the caller is either in the same user or has appropriate permission to interact 1414 * across users. 1415 * 1416 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1417 */ 1418 private void enforceCrossUserPermission(int userId) { 1419 if (userId == UserHandle.getCallingUserId()) { 1420 // Not a cross-user call. 1421 return; 1422 } 1423 mContext.enforceCallingOrSelfPermission( 1424 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1425 "ConnectivityService"); 1426 } 1427 1428 private void enforceInternetPermission() { 1429 mContext.enforceCallingOrSelfPermission( 1430 android.Manifest.permission.INTERNET, 1431 "ConnectivityService"); 1432 } 1433 1434 private void enforceAccessPermission() { 1435 mContext.enforceCallingOrSelfPermission( 1436 android.Manifest.permission.ACCESS_NETWORK_STATE, 1437 "ConnectivityService"); 1438 } 1439 1440 private void enforceChangePermission() { 1441 mContext.enforceCallingOrSelfPermission( 1442 android.Manifest.permission.CHANGE_NETWORK_STATE, 1443 "ConnectivityService"); 1444 } 1445 1446 private void enforceTetherAccessPermission() { 1447 mContext.enforceCallingOrSelfPermission( 1448 android.Manifest.permission.ACCESS_NETWORK_STATE, 1449 "ConnectivityService"); 1450 } 1451 1452 private void enforceConnectivityInternalPermission() { 1453 mContext.enforceCallingOrSelfPermission( 1454 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1455 "ConnectivityService"); 1456 } 1457 1458 private void enforceKeepalivePermission() { 1459 mContext.enforceCallingPermission(KeepaliveTracker.PERMISSION, "ConnectivityService"); 1460 } 1461 1462 public void sendConnectedBroadcast(NetworkInfo info) { 1463 enforceConnectivityInternalPermission(); 1464 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1465 } 1466 1467 private void sendInetConditionBroadcast(NetworkInfo info) { 1468 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1469 } 1470 1471 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1472 if (mLockdownTracker != null) { 1473 info = mLockdownTracker.augmentNetworkInfo(info); 1474 } 1475 1476 Intent intent = new Intent(bcastType); 1477 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1478 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1479 if (info.isFailover()) { 1480 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1481 info.setFailover(false); 1482 } 1483 if (info.getReason() != null) { 1484 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1485 } 1486 if (info.getExtraInfo() != null) { 1487 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1488 info.getExtraInfo()); 1489 } 1490 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1491 return intent; 1492 } 1493 1494 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1495 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1496 } 1497 1498 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1499 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1500 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1501 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1502 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1503 final long ident = Binder.clearCallingIdentity(); 1504 try { 1505 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1506 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1507 } finally { 1508 Binder.restoreCallingIdentity(ident); 1509 } 1510 } 1511 1512 private void sendStickyBroadcast(Intent intent) { 1513 synchronized(this) { 1514 if (!mSystemReady) { 1515 mInitialBroadcast = new Intent(intent); 1516 } 1517 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1518 if (DBG) { 1519 log("sendStickyBroadcast: action=" + intent.getAction()); 1520 } 1521 1522 final long ident = Binder.clearCallingIdentity(); 1523 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1524 final IBatteryStats bs = BatteryStatsService.getService(); 1525 try { 1526 NetworkInfo ni = intent.getParcelableExtra( 1527 ConnectivityManager.EXTRA_NETWORK_INFO); 1528 bs.noteConnectivityChanged(intent.getIntExtra( 1529 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1530 ni != null ? ni.getState().toString() : "?"); 1531 } catch (RemoteException e) { 1532 } 1533 } 1534 try { 1535 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1536 } finally { 1537 Binder.restoreCallingIdentity(ident); 1538 } 1539 } 1540 } 1541 1542 void systemReady() { 1543 loadGlobalProxy(); 1544 1545 synchronized(this) { 1546 mSystemReady = true; 1547 if (mInitialBroadcast != null) { 1548 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1549 mInitialBroadcast = null; 1550 } 1551 } 1552 // load the global proxy at startup 1553 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1554 1555 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1556 // for user to unlock device. 1557 if (!updateLockdownVpn()) { 1558 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1559 mContext.registerReceiver(mUserPresentReceiver, filter); 1560 } 1561 1562 // Configure whether mobile data is always on. 1563 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1564 1565 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1566 1567 mPermissionMonitor.startMonitoring(); 1568 } 1569 1570 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1571 @Override 1572 public void onReceive(Context context, Intent intent) { 1573 // Try creating lockdown tracker, since user present usually means 1574 // unlocked keystore. 1575 if (updateLockdownVpn()) { 1576 mContext.unregisterReceiver(this); 1577 } 1578 } 1579 }; 1580 1581 /** 1582 * Setup data activity tracking for the given network. 1583 * 1584 * Every {@code setupDataActivityTracking} should be paired with a 1585 * {@link #removeDataActivityTracking} for cleanup. 1586 */ 1587 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1588 final String iface = networkAgent.linkProperties.getInterfaceName(); 1589 1590 final int timeout; 1591 int type = ConnectivityManager.TYPE_NONE; 1592 1593 if (networkAgent.networkCapabilities.hasTransport( 1594 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1595 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1596 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1597 5); 1598 type = ConnectivityManager.TYPE_MOBILE; 1599 } else if (networkAgent.networkCapabilities.hasTransport( 1600 NetworkCapabilities.TRANSPORT_WIFI)) { 1601 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1602 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1603 15); 1604 type = ConnectivityManager.TYPE_WIFI; 1605 } else { 1606 // do not track any other networks 1607 timeout = 0; 1608 } 1609 1610 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1611 try { 1612 mNetd.addIdleTimer(iface, timeout, type); 1613 } catch (Exception e) { 1614 // You shall not crash! 1615 loge("Exception in setupDataActivityTracking " + e); 1616 } 1617 } 1618 } 1619 1620 /** 1621 * Remove data activity tracking when network disconnects. 1622 */ 1623 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1624 final String iface = networkAgent.linkProperties.getInterfaceName(); 1625 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1626 1627 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1628 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1629 try { 1630 // the call fails silently if no idletimer setup for this interface 1631 mNetd.removeIdleTimer(iface); 1632 } catch (Exception e) { 1633 loge("Exception in removeDataActivityTracking " + e); 1634 } 1635 } 1636 } 1637 1638 /** 1639 * Reads the network specific MTU size from reources. 1640 * and set it on it's iface. 1641 */ 1642 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1643 final String iface = newLp.getInterfaceName(); 1644 final int mtu = newLp.getMtu(); 1645 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1646 if (VDBG) log("identical MTU - not setting"); 1647 return; 1648 } 1649 1650 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1651 loge("Unexpected mtu value: " + mtu + ", " + iface); 1652 return; 1653 } 1654 1655 // Cannot set MTU without interface name 1656 if (TextUtils.isEmpty(iface)) { 1657 loge("Setting MTU size with null iface."); 1658 return; 1659 } 1660 1661 try { 1662 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1663 mNetd.setMtu(iface, mtu); 1664 } catch (Exception e) { 1665 Slog.e(TAG, "exception in setMtu()" + e); 1666 } 1667 } 1668 1669 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1670 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1671 1672 // Overridden for testing purposes to avoid writing to SystemProperties. 1673 @VisibleForTesting 1674 protected int getDefaultTcpRwnd() { 1675 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1676 } 1677 1678 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1679 if (isDefaultNetwork(nai) == false) { 1680 return; 1681 } 1682 1683 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1684 String[] values = null; 1685 if (tcpBufferSizes != null) { 1686 values = tcpBufferSizes.split(","); 1687 } 1688 1689 if (values == null || values.length != 6) { 1690 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1691 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1692 values = tcpBufferSizes.split(","); 1693 } 1694 1695 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1696 1697 try { 1698 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1699 1700 final String prefix = "/sys/kernel/ipv4/tcp_"; 1701 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1702 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1703 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1704 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1705 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1706 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1707 mCurrentTcpBufferSizes = tcpBufferSizes; 1708 } catch (IOException e) { 1709 loge("Can't set TCP buffer sizes:" + e); 1710 } 1711 1712 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1713 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1714 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1715 if (rwndValue != 0) { 1716 SystemProperties.set(sysctlKey, rwndValue.toString()); 1717 } 1718 } 1719 1720 private void flushVmDnsCache() { 1721 /* 1722 * Tell the VMs to toss their DNS caches 1723 */ 1724 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1725 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1726 /* 1727 * Connectivity events can happen before boot has completed ... 1728 */ 1729 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1730 final long ident = Binder.clearCallingIdentity(); 1731 try { 1732 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1733 } finally { 1734 Binder.restoreCallingIdentity(ident); 1735 } 1736 } 1737 1738 @Override 1739 public int getRestoreDefaultNetworkDelay(int networkType) { 1740 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1741 NETWORK_RESTORE_DELAY_PROP_NAME); 1742 if(restoreDefaultNetworkDelayStr != null && 1743 restoreDefaultNetworkDelayStr.length() != 0) { 1744 try { 1745 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1746 } catch (NumberFormatException e) { 1747 } 1748 } 1749 // if the system property isn't set, use the value for the apn type 1750 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1751 1752 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1753 (mNetConfigs[networkType] != null)) { 1754 ret = mNetConfigs[networkType].restoreTime; 1755 } 1756 return ret; 1757 } 1758 1759 private boolean argsContain(String[] args, String target) { 1760 for (String arg : args) { 1761 if (arg.equals(target)) return true; 1762 } 1763 return false; 1764 } 1765 1766 @Override 1767 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1768 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1769 if (mContext.checkCallingOrSelfPermission( 1770 android.Manifest.permission.DUMP) 1771 != PackageManager.PERMISSION_GRANTED) { 1772 pw.println("Permission Denial: can't dump ConnectivityService " + 1773 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1774 Binder.getCallingUid()); 1775 return; 1776 } 1777 1778 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1779 if (argsContain(args, "--diag")) { 1780 final long DIAG_TIME_MS = 5000; 1781 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1782 // Start gathering diagnostic information. 1783 netDiags.add(new NetworkDiagnostics( 1784 nai.network, 1785 new LinkProperties(nai.linkProperties), 1786 DIAG_TIME_MS)); 1787 } 1788 1789 for (NetworkDiagnostics netDiag : netDiags) { 1790 pw.println(); 1791 netDiag.waitForMeasurements(); 1792 netDiag.dump(pw); 1793 } 1794 1795 return; 1796 } 1797 1798 pw.print("NetworkFactories for:"); 1799 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1800 pw.print(" " + nfi.name); 1801 } 1802 pw.println(); 1803 pw.println(); 1804 1805 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 1806 pw.print("Active default network: "); 1807 if (defaultNai == null) { 1808 pw.println("none"); 1809 } else { 1810 pw.println(defaultNai.network.netId); 1811 } 1812 pw.println(); 1813 1814 pw.println("Current Networks:"); 1815 pw.increaseIndent(); 1816 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1817 pw.println(nai.toString()); 1818 pw.increaseIndent(); 1819 pw.println("Requests:"); 1820 pw.increaseIndent(); 1821 for (int i = 0; i < nai.networkRequests.size(); i++) { 1822 pw.println(nai.networkRequests.valueAt(i).toString()); 1823 } 1824 pw.decreaseIndent(); 1825 pw.println("Lingered:"); 1826 pw.increaseIndent(); 1827 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1828 pw.decreaseIndent(); 1829 pw.decreaseIndent(); 1830 } 1831 pw.decreaseIndent(); 1832 pw.println(); 1833 1834 pw.println("Network Requests:"); 1835 pw.increaseIndent(); 1836 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1837 pw.println(nri.toString()); 1838 } 1839 pw.println(); 1840 pw.decreaseIndent(); 1841 1842 mLegacyTypeTracker.dump(pw); 1843 1844 synchronized (this) { 1845 pw.print("mNetTransitionWakeLock: currently " + 1846 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1847 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1848 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1849 } else { 1850 pw.println(", last requested never"); 1851 } 1852 } 1853 1854 pw.println(); 1855 mTethering.dump(fd, pw, args); 1856 1857 pw.println(); 1858 mKeepaliveTracker.dump(pw); 1859 1860 if (mInetLog != null && mInetLog.size() > 0) { 1861 pw.println(); 1862 pw.println("Inet condition reports:"); 1863 pw.increaseIndent(); 1864 for(int i = 0; i < mInetLog.size(); i++) { 1865 pw.println(mInetLog.get(i)); 1866 } 1867 pw.decreaseIndent(); 1868 } 1869 1870 if (argsContain(args, "--short") == false) { 1871 pw.println(); 1872 synchronized (mValidationLogs) { 1873 pw.println("mValidationLogs (most recent first):"); 1874 for (Pair<Network,ReadOnlyLocalLog> p : mValidationLogs) { 1875 pw.println(p.first); 1876 pw.increaseIndent(); 1877 p.second.dump(fd, pw, args); 1878 pw.decreaseIndent(); 1879 } 1880 } 1881 1882 pw.println(); 1883 pw.println("mNetworkRequestInfoLogs (most recent first):"); 1884 pw.increaseIndent(); 1885 mNetworkRequestInfoLogs.reverseDump(fd, pw, args); 1886 pw.decreaseIndent(); 1887 } 1888 } 1889 1890 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1891 if (nai.network == null) return false; 1892 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1893 if (officialNai != null && officialNai.equals(nai)) return true; 1894 if (officialNai != null || VDBG) { 1895 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1896 " - " + nai); 1897 } 1898 return false; 1899 } 1900 1901 private boolean isRequest(NetworkRequest request) { 1902 return mNetworkRequests.get(request).isRequest; 1903 } 1904 1905 // must be stateless - things change under us. 1906 private class NetworkStateTrackerHandler extends Handler { 1907 public NetworkStateTrackerHandler(Looper looper) { 1908 super(looper); 1909 } 1910 1911 @Override 1912 public void handleMessage(Message msg) { 1913 NetworkInfo info; 1914 switch (msg.what) { 1915 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1916 handleAsyncChannelHalfConnect(msg); 1917 break; 1918 } 1919 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1920 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1921 if (nai != null) nai.asyncChannel.disconnect(); 1922 break; 1923 } 1924 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1925 handleAsyncChannelDisconnected(msg); 1926 break; 1927 } 1928 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1929 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1930 if (nai == null) { 1931 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1932 } else { 1933 final NetworkCapabilities networkCapabilities = 1934 (NetworkCapabilities)msg.obj; 1935 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL) || 1936 networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 1937 Slog.wtf(TAG, "BUG: " + nai + " has stateful capability."); 1938 } 1939 if (nai.created && !nai.networkCapabilities.equalImmutableCapabilities( 1940 networkCapabilities)) { 1941 Slog.wtf(TAG, "BUG: " + nai + " changed immutable capabilities: " 1942 + nai.networkCapabilities + " -> " + networkCapabilities); 1943 } 1944 updateCapabilities(nai, networkCapabilities); 1945 } 1946 break; 1947 } 1948 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1949 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1950 if (nai == null) { 1951 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1952 } else { 1953 if (VDBG) { 1954 log("Update of LinkProperties for " + nai.name() + 1955 "; created=" + nai.created); 1956 } 1957 LinkProperties oldLp = nai.linkProperties; 1958 synchronized (nai) { 1959 nai.linkProperties = (LinkProperties)msg.obj; 1960 } 1961 if (nai.created) updateLinkProperties(nai, oldLp); 1962 } 1963 break; 1964 } 1965 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1966 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1967 if (nai == null) { 1968 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1969 break; 1970 } 1971 info = (NetworkInfo) msg.obj; 1972 updateNetworkInfo(nai, info); 1973 break; 1974 } 1975 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1976 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1977 if (nai == null) { 1978 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1979 break; 1980 } 1981 Integer score = (Integer) msg.obj; 1982 if (score != null) updateNetworkScore(nai, score.intValue()); 1983 break; 1984 } 1985 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1986 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1987 if (nai == null) { 1988 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1989 break; 1990 } 1991 try { 1992 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1993 } catch (Exception e) { 1994 // Never crash! 1995 loge("Exception in addVpnUidRanges: " + e); 1996 } 1997 break; 1998 } 1999 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 2000 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2001 if (nai == null) { 2002 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 2003 break; 2004 } 2005 try { 2006 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2007 } catch (Exception e) { 2008 // Never crash! 2009 loge("Exception in removeVpnUidRanges: " + e); 2010 } 2011 break; 2012 } 2013 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 2014 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2015 if (nai == null) { 2016 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 2017 break; 2018 } 2019 if (nai.created && !nai.networkMisc.explicitlySelected) { 2020 loge("ERROR: created network explicitly selected."); 2021 } 2022 nai.networkMisc.explicitlySelected = true; 2023 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 2024 break; 2025 } 2026 case NetworkAgent.EVENT_PACKET_KEEPALIVE: { 2027 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2028 if (nai == null) { 2029 loge("EVENT_PACKET_KEEPALIVE from unknown NetworkAgent"); 2030 break; 2031 } 2032 mKeepaliveTracker.handleEventPacketKeepalive(nai, msg); 2033 break; 2034 } 2035 case NetworkMonitor.EVENT_NETWORK_TESTED: { 2036 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2037 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_TESTED")) { 2038 final boolean valid = 2039 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2040 if (DBG) log(nai.name() + " validation " + (valid ? " passed" : "failed")); 2041 if (valid != nai.lastValidated) { 2042 final int oldScore = nai.getCurrentScore(); 2043 nai.lastValidated = valid; 2044 nai.everValidated |= valid; 2045 updateCapabilities(nai, nai.networkCapabilities); 2046 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2047 if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); 2048 } 2049 updateInetCondition(nai); 2050 // Let the NetworkAgent know the state of its network 2051 nai.asyncChannel.sendMessage( 2052 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2053 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2054 0, null); 2055 } 2056 break; 2057 } 2058 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2059 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2060 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 2061 handleLingerComplete(nai); 2062 } 2063 break; 2064 } 2065 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2066 final int netId = msg.arg2; 2067 final boolean visible = (msg.arg1 != 0); 2068 final NetworkAgentInfo nai; 2069 synchronized (mNetworkForNetId) { 2070 nai = mNetworkForNetId.get(netId); 2071 } 2072 // If captive portal status has changed, update capabilities. 2073 if (nai != null && (visible != nai.lastCaptivePortalDetected)) { 2074 nai.lastCaptivePortalDetected = visible; 2075 nai.everCaptivePortalDetected |= visible; 2076 updateCapabilities(nai, nai.networkCapabilities); 2077 } 2078 if (!visible) { 2079 setProvNotificationVisibleIntent(false, netId, null, 0, null, null, false); 2080 } else { 2081 if (nai == null) { 2082 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2083 break; 2084 } 2085 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2086 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), 2087 (PendingIntent)msg.obj, nai.networkMisc.explicitlySelected); 2088 } 2089 break; 2090 } 2091 } 2092 } 2093 } 2094 2095 private void linger(NetworkAgentInfo nai) { 2096 nai.lingering = true; 2097 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 2098 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 2099 } 2100 2101 // Cancel any lingering so the linger timeout doesn't teardown a network. 2102 // This should be called when a network begins satisfying a NetworkRequest. 2103 // Note: depending on what state the NetworkMonitor is in (e.g., 2104 // if it's awaiting captive portal login, or if validation failed), this 2105 // may trigger a re-evaluation of the network. 2106 private void unlinger(NetworkAgentInfo nai) { 2107 nai.networkLingered.clear(); 2108 if (!nai.lingering) return; 2109 nai.lingering = false; 2110 if (VDBG) log("Canceling linger of " + nai.name()); 2111 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2112 } 2113 2114 private void handleAsyncChannelHalfConnect(Message msg) { 2115 AsyncChannel ac = (AsyncChannel) msg.obj; 2116 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2117 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2118 if (VDBG) log("NetworkFactory connected"); 2119 // A network factory has connected. Send it all current NetworkRequests. 2120 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2121 if (nri.isRequest == false) continue; 2122 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2123 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2124 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2125 } 2126 } else { 2127 loge("Error connecting NetworkFactory"); 2128 mNetworkFactoryInfos.remove(msg.obj); 2129 } 2130 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2131 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2132 if (VDBG) log("NetworkAgent connected"); 2133 // A network agent has requested a connection. Establish the connection. 2134 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2135 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2136 } else { 2137 loge("Error connecting NetworkAgent"); 2138 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2139 if (nai != null) { 2140 final boolean wasDefault = isDefaultNetwork(nai); 2141 synchronized (mNetworkForNetId) { 2142 mNetworkForNetId.remove(nai.network.netId); 2143 mNetIdInUse.delete(nai.network.netId); 2144 } 2145 // Just in case. 2146 mLegacyTypeTracker.remove(nai, wasDefault); 2147 } 2148 } 2149 } 2150 } 2151 2152 private void handleAsyncChannelDisconnected(Message msg) { 2153 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2154 if (nai != null) { 2155 if (DBG) { 2156 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2157 } 2158 // A network agent has disconnected. 2159 // TODO - if we move the logic to the network agent (have them disconnect 2160 // because they lost all their requests or because their score isn't good) 2161 // then they would disconnect organically, report their new state and then 2162 // disconnect the channel. 2163 if (nai.networkInfo.isConnected()) { 2164 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2165 null, null); 2166 } 2167 final boolean wasDefault = isDefaultNetwork(nai); 2168 if (wasDefault) { 2169 mDefaultInetConditionPublished = 0; 2170 } 2171 notifyIfacesChanged(); 2172 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2173 mKeepaliveTracker.handleStopAllKeepalives(nai, 2174 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 2175 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2176 mNetworkAgentInfos.remove(msg.replyTo); 2177 updateClat(null, nai.linkProperties, nai); 2178 synchronized (mNetworkForNetId) { 2179 // Remove the NetworkAgent, but don't mark the netId as 2180 // available until we've told netd to delete it below. 2181 mNetworkForNetId.remove(nai.network.netId); 2182 } 2183 // Remove all previously satisfied requests. 2184 for (int i = 0; i < nai.networkRequests.size(); i++) { 2185 NetworkRequest request = nai.networkRequests.valueAt(i); 2186 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2187 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2188 mNetworkForRequestId.remove(request.requestId); 2189 sendUpdatedScoreToFactories(request, 0); 2190 } 2191 } 2192 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2193 removeDataActivityTracking(nai); 2194 notifyLockdownVpn(nai); 2195 requestNetworkTransitionWakelock(nai.name()); 2196 } 2197 mLegacyTypeTracker.remove(nai, wasDefault); 2198 rematchAllNetworksAndRequests(null, 0); 2199 if (nai.created) { 2200 // Tell netd to clean up the configuration for this network 2201 // (routing rules, DNS, etc). 2202 // This may be slow as it requires a lot of netd shelling out to ip and 2203 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2204 // after we've rematched networks with requests which should make a potential 2205 // fallback network the default or requested a new network from the 2206 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2207 // long time. 2208 try { 2209 mNetd.removeNetwork(nai.network.netId); 2210 } catch (Exception e) { 2211 loge("Exception removing network: " + e); 2212 } 2213 } 2214 synchronized (mNetworkForNetId) { 2215 mNetIdInUse.delete(nai.network.netId); 2216 } 2217 } else { 2218 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2219 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2220 } 2221 } 2222 2223 // If this method proves to be too slow then we can maintain a separate 2224 // pendingIntent => NetworkRequestInfo map. 2225 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2226 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2227 Intent intent = pendingIntent.getIntent(); 2228 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2229 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2230 if (existingPendingIntent != null && 2231 existingPendingIntent.getIntent().filterEquals(intent)) { 2232 return entry.getValue(); 2233 } 2234 } 2235 return null; 2236 } 2237 2238 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2239 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2240 2241 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2242 if (existingRequest != null) { // remove the existing request. 2243 if (DBG) log("Replacing " + existingRequest.request + " with " 2244 + nri.request + " because their intents matched."); 2245 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2246 } 2247 handleRegisterNetworkRequest(nri); 2248 } 2249 2250 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2251 mNetworkRequests.put(nri.request, nri); 2252 mNetworkRequestInfoLogs.log("REGISTER " + nri); 2253 rematchAllNetworksAndRequests(null, 0); 2254 if (nri.isRequest && mNetworkForRequestId.get(nri.request.requestId) == null) { 2255 sendUpdatedScoreToFactories(nri.request, 0); 2256 } 2257 } 2258 2259 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2260 int callingUid) { 2261 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2262 if (nri != null) { 2263 handleReleaseNetworkRequest(nri.request, callingUid); 2264 } 2265 } 2266 2267 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2268 // This is whether it is satisfying any NetworkRequests or were it to become validated, 2269 // would it have a chance of satisfying any NetworkRequests. 2270 private boolean unneeded(NetworkAgentInfo nai) { 2271 if (!nai.created || nai.isVPN() || nai.lingering) return false; 2272 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2273 // If this Network is already the highest scoring Network for a request, or if 2274 // there is hope for it to become one if it validated, then it is needed. 2275 if (nri.isRequest && nai.satisfies(nri.request) && 2276 (nai.networkRequests.get(nri.request.requestId) != null || 2277 // Note that this catches two important cases: 2278 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2279 // is currently satisfying the request. This is desirable when 2280 // cellular ends up validating but WiFi does not. 2281 // 2. Unvalidated WiFi will not be reaped when validated cellular 2282 // is currently satsifying the request. This is desirable when 2283 // WiFi ends up validating and out scoring cellular. 2284 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2285 nai.getCurrentScoreAsValidated())) { 2286 return false; 2287 } 2288 } 2289 return true; 2290 } 2291 2292 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2293 NetworkRequestInfo nri = mNetworkRequests.get(request); 2294 if (nri != null) { 2295 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2296 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2297 return; 2298 } 2299 if (DBG) log("releasing NetworkRequest " + request); 2300 nri.unlinkDeathRecipient(); 2301 mNetworkRequests.remove(request); 2302 mNetworkRequestInfoLogs.log("RELEASE " + nri); 2303 if (nri.isRequest) { 2304 // Find all networks that are satisfying this request and remove the request 2305 // from their request lists. 2306 // TODO - it's my understanding that for a request there is only a single 2307 // network satisfying it, so this loop is wasteful 2308 boolean wasKept = false; 2309 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2310 if (nai.networkRequests.get(nri.request.requestId) != null) { 2311 nai.networkRequests.remove(nri.request.requestId); 2312 if (DBG) { 2313 log(" Removing from current network " + nai.name() + 2314 ", leaving " + nai.networkRequests.size() + 2315 " requests."); 2316 } 2317 if (unneeded(nai)) { 2318 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2319 teardownUnneededNetwork(nai); 2320 } else { 2321 // suspect there should only be one pass through here 2322 // but if any were kept do the check below 2323 wasKept |= true; 2324 } 2325 } 2326 } 2327 2328 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2329 if (nai != null) { 2330 mNetworkForRequestId.remove(nri.request.requestId); 2331 } 2332 // Maintain the illusion. When this request arrived, we might have pretended 2333 // that a network connected to serve it, even though the network was already 2334 // connected. Now that this request has gone away, we might have to pretend 2335 // that the network disconnected. LegacyTypeTracker will generate that 2336 // phantom disconnect for this type. 2337 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2338 boolean doRemove = true; 2339 if (wasKept) { 2340 // check if any of the remaining requests for this network are for the 2341 // same legacy type - if so, don't remove the nai 2342 for (int i = 0; i < nai.networkRequests.size(); i++) { 2343 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2344 if (otherRequest.legacyType == nri.request.legacyType && 2345 isRequest(otherRequest)) { 2346 if (DBG) log(" still have other legacy request - leaving"); 2347 doRemove = false; 2348 } 2349 } 2350 } 2351 2352 if (doRemove) { 2353 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2354 } 2355 } 2356 2357 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2358 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2359 nri.request); 2360 } 2361 } else { 2362 // listens don't have a singular affectedNetwork. Check all networks to see 2363 // if this listen request applies and remove it. 2364 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2365 nai.networkRequests.remove(nri.request.requestId); 2366 } 2367 } 2368 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2369 } 2370 } 2371 2372 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2373 enforceConnectivityInternalPermission(); 2374 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2375 accept ? 1 : 0, always ? 1: 0, network)); 2376 } 2377 2378 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2379 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2380 " accept=" + accept + " always=" + always); 2381 2382 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2383 if (nai == null) { 2384 // Nothing to do. 2385 return; 2386 } 2387 2388 if (nai.everValidated) { 2389 // The network validated while the dialog box was up. Take no action. 2390 return; 2391 } 2392 2393 if (!nai.networkMisc.explicitlySelected) { 2394 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2395 } 2396 2397 if (accept != nai.networkMisc.acceptUnvalidated) { 2398 int oldScore = nai.getCurrentScore(); 2399 nai.networkMisc.acceptUnvalidated = accept; 2400 rematchAllNetworksAndRequests(nai, oldScore); 2401 sendUpdatedScoreToFactories(nai); 2402 } 2403 2404 if (always) { 2405 nai.asyncChannel.sendMessage( 2406 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2407 } 2408 2409 if (!accept) { 2410 // Tell the NetworkAgent that the network does not have Internet access (because that's 2411 // what we just told the user). This will hint to Wi-Fi not to autojoin this network in 2412 // the future. We do this now because NetworkMonitor might not yet have finished 2413 // validating and thus we might not yet have received an EVENT_NETWORK_TESTED. 2414 nai.asyncChannel.sendMessage(NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2415 NetworkAgent.INVALID_NETWORK, 0, null); 2416 // TODO: Tear the network down once we have determined how to tell WifiStateMachine not 2417 // to reconnect to it immediately. http://b/20739299 2418 } 2419 2420 } 2421 2422 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2423 if (DBG) log("scheduleUnvalidatedPrompt " + nai.network); 2424 mHandler.sendMessageDelayed( 2425 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2426 PROMPT_UNVALIDATED_DELAY_MS); 2427 } 2428 2429 private void handlePromptUnvalidated(Network network) { 2430 if (DBG) log("handlePromptUnvalidated " + network); 2431 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2432 2433 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2434 // we haven't already been told to switch to it regardless of whether it validated or not. 2435 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2436 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2437 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2438 return; 2439 } 2440 2441 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2442 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2443 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2444 intent.setClassName("com.android.settings", 2445 "com.android.settings.wifi.WifiNoInternetDialog"); 2446 2447 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2448 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2449 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2450 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent, true); 2451 } 2452 2453 private class InternalHandler extends Handler { 2454 public InternalHandler(Looper looper) { 2455 super(looper); 2456 } 2457 2458 @Override 2459 public void handleMessage(Message msg) { 2460 switch (msg.what) { 2461 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2462 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2463 String causedBy = null; 2464 synchronized (ConnectivityService.this) { 2465 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2466 mNetTransitionWakeLock.isHeld()) { 2467 mNetTransitionWakeLock.release(); 2468 causedBy = mNetTransitionWakeLockCausedBy; 2469 } else { 2470 break; 2471 } 2472 } 2473 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2474 log("Failed to find a new network - expiring NetTransition Wakelock"); 2475 } else { 2476 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2477 " cleared because we found a replacement network"); 2478 } 2479 break; 2480 } 2481 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2482 handleDeprecatedGlobalHttpProxy(); 2483 break; 2484 } 2485 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2486 Intent intent = (Intent)msg.obj; 2487 sendStickyBroadcast(intent); 2488 break; 2489 } 2490 case EVENT_PROXY_HAS_CHANGED: { 2491 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2492 break; 2493 } 2494 case EVENT_REGISTER_NETWORK_FACTORY: { 2495 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2496 break; 2497 } 2498 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2499 handleUnregisterNetworkFactory((Messenger)msg.obj); 2500 break; 2501 } 2502 case EVENT_REGISTER_NETWORK_AGENT: { 2503 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2504 break; 2505 } 2506 case EVENT_REGISTER_NETWORK_REQUEST: 2507 case EVENT_REGISTER_NETWORK_LISTENER: { 2508 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2509 break; 2510 } 2511 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2512 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2513 handleRegisterNetworkRequestWithIntent(msg); 2514 break; 2515 } 2516 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2517 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2518 break; 2519 } 2520 case EVENT_RELEASE_NETWORK_REQUEST: { 2521 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2522 break; 2523 } 2524 case EVENT_SET_ACCEPT_UNVALIDATED: { 2525 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2526 break; 2527 } 2528 case EVENT_PROMPT_UNVALIDATED: { 2529 handlePromptUnvalidated((Network) msg.obj); 2530 break; 2531 } 2532 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2533 handleMobileDataAlwaysOn(); 2534 break; 2535 } 2536 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2537 case NetworkAgent.CMD_START_PACKET_KEEPALIVE: { 2538 mKeepaliveTracker.handleStartKeepalive(msg); 2539 break; 2540 } 2541 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2542 case NetworkAgent.CMD_STOP_PACKET_KEEPALIVE: { 2543 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork((Network) msg.obj); 2544 int slot = msg.arg1; 2545 int reason = msg.arg2; 2546 mKeepaliveTracker.handleStopKeepalive(nai, slot, reason); 2547 break; 2548 } 2549 case EVENT_SYSTEM_READY: { 2550 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2551 nai.networkMonitor.systemReady = true; 2552 } 2553 break; 2554 } 2555 } 2556 } 2557 } 2558 2559 // javadoc from interface 2560 public int tether(String iface) { 2561 ConnectivityManager.enforceTetherChangePermission(mContext); 2562 if (isTetheringSupported()) { 2563 return mTethering.tether(iface); 2564 } else { 2565 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2566 } 2567 } 2568 2569 // javadoc from interface 2570 public int untether(String iface) { 2571 ConnectivityManager.enforceTetherChangePermission(mContext); 2572 2573 if (isTetheringSupported()) { 2574 return mTethering.untether(iface); 2575 } else { 2576 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2577 } 2578 } 2579 2580 // javadoc from interface 2581 public int getLastTetherError(String iface) { 2582 enforceTetherAccessPermission(); 2583 2584 if (isTetheringSupported()) { 2585 return mTethering.getLastTetherError(iface); 2586 } else { 2587 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2588 } 2589 } 2590 2591 // TODO - proper iface API for selection by property, inspection, etc 2592 public String[] getTetherableUsbRegexs() { 2593 enforceTetherAccessPermission(); 2594 if (isTetheringSupported()) { 2595 return mTethering.getTetherableUsbRegexs(); 2596 } else { 2597 return new String[0]; 2598 } 2599 } 2600 2601 public String[] getTetherableWifiRegexs() { 2602 enforceTetherAccessPermission(); 2603 if (isTetheringSupported()) { 2604 return mTethering.getTetherableWifiRegexs(); 2605 } else { 2606 return new String[0]; 2607 } 2608 } 2609 2610 public String[] getTetherableBluetoothRegexs() { 2611 enforceTetherAccessPermission(); 2612 if (isTetheringSupported()) { 2613 return mTethering.getTetherableBluetoothRegexs(); 2614 } else { 2615 return new String[0]; 2616 } 2617 } 2618 2619 public int setUsbTethering(boolean enable) { 2620 ConnectivityManager.enforceTetherChangePermission(mContext); 2621 if (isTetheringSupported()) { 2622 return mTethering.setUsbTethering(enable); 2623 } else { 2624 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2625 } 2626 } 2627 2628 // TODO - move iface listing, queries, etc to new module 2629 // javadoc from interface 2630 public String[] getTetherableIfaces() { 2631 enforceTetherAccessPermission(); 2632 return mTethering.getTetherableIfaces(); 2633 } 2634 2635 public String[] getTetheredIfaces() { 2636 enforceTetherAccessPermission(); 2637 return mTethering.getTetheredIfaces(); 2638 } 2639 2640 public String[] getTetheringErroredIfaces() { 2641 enforceTetherAccessPermission(); 2642 return mTethering.getErroredIfaces(); 2643 } 2644 2645 public String[] getTetheredDhcpRanges() { 2646 enforceConnectivityInternalPermission(); 2647 return mTethering.getTetheredDhcpRanges(); 2648 } 2649 2650 // if ro.tether.denied = true we default to no tethering 2651 // gservices could set the secure setting to 1 though to enable it on a build where it 2652 // had previously been turned off. 2653 public boolean isTetheringSupported() { 2654 enforceTetherAccessPermission(); 2655 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2656 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2657 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2658 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2659 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2660 mTethering.getTetherableWifiRegexs().length != 0 || 2661 mTethering.getTetherableBluetoothRegexs().length != 0) && 2662 mTethering.getUpstreamIfaceTypes().length != 0); 2663 } 2664 2665 // Called when we lose the default network and have no replacement yet. 2666 // This will automatically be cleared after X seconds or a new default network 2667 // becomes CONNECTED, whichever happens first. The timer is started by the 2668 // first caller and not restarted by subsequent callers. 2669 private void requestNetworkTransitionWakelock(String forWhom) { 2670 int serialNum = 0; 2671 synchronized (this) { 2672 if (mNetTransitionWakeLock.isHeld()) return; 2673 serialNum = ++mNetTransitionWakeLockSerialNumber; 2674 mNetTransitionWakeLock.acquire(); 2675 mNetTransitionWakeLockCausedBy = forWhom; 2676 } 2677 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2678 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2679 mNetTransitionWakeLockTimeout); 2680 return; 2681 } 2682 2683 // 100 percent is full good, 0 is full bad. 2684 public void reportInetCondition(int networkType, int percentage) { 2685 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2686 if (nai == null) return; 2687 reportNetworkConnectivity(nai.network, percentage > 50); 2688 } 2689 2690 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2691 enforceAccessPermission(); 2692 enforceInternetPermission(); 2693 2694 NetworkAgentInfo nai; 2695 if (network == null) { 2696 nai = getDefaultNetwork(); 2697 } else { 2698 nai = getNetworkAgentInfoForNetwork(network); 2699 } 2700 if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || 2701 nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { 2702 return; 2703 } 2704 // Revalidate if the app report does not match our current validated state. 2705 if (hasConnectivity == nai.lastValidated) return; 2706 final int uid = Binder.getCallingUid(); 2707 if (DBG) { 2708 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2709 ") by " + uid); 2710 } 2711 synchronized (nai) { 2712 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2713 // which isn't meant to work on uncreated networks. 2714 if (!nai.created) return; 2715 2716 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2717 2718 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2719 } 2720 } 2721 2722 private ProxyInfo getDefaultProxy() { 2723 // this information is already available as a world read/writable jvm property 2724 // so this API change wouldn't have a benifit. It also breaks the passing 2725 // of proxy info to all the JVMs. 2726 // enforceAccessPermission(); 2727 synchronized (mProxyLock) { 2728 ProxyInfo ret = mGlobalProxy; 2729 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2730 return ret; 2731 } 2732 } 2733 2734 public ProxyInfo getProxyForNetwork(Network network) { 2735 if (network == null) return getDefaultProxy(); 2736 final ProxyInfo globalProxy = getGlobalProxy(); 2737 if (globalProxy != null) return globalProxy; 2738 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2739 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2740 // caller may not have. 2741 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2742 if (nai == null) return null; 2743 synchronized (nai) { 2744 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2745 if (proxyInfo == null) return null; 2746 return new ProxyInfo(proxyInfo); 2747 } 2748 } 2749 2750 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2751 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2752 // proxy is null then there is no proxy in place). 2753 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2754 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2755 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2756 proxy = null; 2757 } 2758 return proxy; 2759 } 2760 2761 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2762 // better for determining if a new proxy broadcast is necessary: 2763 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2764 // avoid unnecessary broadcasts. 2765 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2766 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2767 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2768 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2769 // all set. 2770 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2771 a = canonicalizeProxyInfo(a); 2772 b = canonicalizeProxyInfo(b); 2773 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2774 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2775 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2776 } 2777 2778 public void setGlobalProxy(ProxyInfo proxyProperties) { 2779 enforceConnectivityInternalPermission(); 2780 2781 synchronized (mProxyLock) { 2782 if (proxyProperties == mGlobalProxy) return; 2783 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2784 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2785 2786 String host = ""; 2787 int port = 0; 2788 String exclList = ""; 2789 String pacFileUrl = ""; 2790 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2791 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2792 if (!proxyProperties.isValid()) { 2793 if (DBG) 2794 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2795 return; 2796 } 2797 mGlobalProxy = new ProxyInfo(proxyProperties); 2798 host = mGlobalProxy.getHost(); 2799 port = mGlobalProxy.getPort(); 2800 exclList = mGlobalProxy.getExclusionListAsString(); 2801 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2802 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2803 } 2804 } else { 2805 mGlobalProxy = null; 2806 } 2807 ContentResolver res = mContext.getContentResolver(); 2808 final long token = Binder.clearCallingIdentity(); 2809 try { 2810 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2811 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2812 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2813 exclList); 2814 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2815 } finally { 2816 Binder.restoreCallingIdentity(token); 2817 } 2818 2819 if (mGlobalProxy == null) { 2820 proxyProperties = mDefaultProxy; 2821 } 2822 sendProxyBroadcast(proxyProperties); 2823 } 2824 } 2825 2826 private void loadGlobalProxy() { 2827 ContentResolver res = mContext.getContentResolver(); 2828 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2829 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2830 String exclList = Settings.Global.getString(res, 2831 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2832 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2833 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2834 ProxyInfo proxyProperties; 2835 if (!TextUtils.isEmpty(pacFileUrl)) { 2836 proxyProperties = new ProxyInfo(pacFileUrl); 2837 } else { 2838 proxyProperties = new ProxyInfo(host, port, exclList); 2839 } 2840 if (!proxyProperties.isValid()) { 2841 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2842 return; 2843 } 2844 2845 synchronized (mProxyLock) { 2846 mGlobalProxy = proxyProperties; 2847 } 2848 } 2849 } 2850 2851 public ProxyInfo getGlobalProxy() { 2852 // this information is already available as a world read/writable jvm property 2853 // so this API change wouldn't have a benifit. It also breaks the passing 2854 // of proxy info to all the JVMs. 2855 // enforceAccessPermission(); 2856 synchronized (mProxyLock) { 2857 return mGlobalProxy; 2858 } 2859 } 2860 2861 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2862 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2863 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2864 proxy = null; 2865 } 2866 synchronized (mProxyLock) { 2867 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2868 if (mDefaultProxy == proxy) return; // catches repeated nulls 2869 if (proxy != null && !proxy.isValid()) { 2870 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2871 return; 2872 } 2873 2874 // This call could be coming from the PacManager, containing the port of the local 2875 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2876 // global (to get the correct local port), and send a broadcast. 2877 // TODO: Switch PacManager to have its own message to send back rather than 2878 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2879 if ((mGlobalProxy != null) && (proxy != null) 2880 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2881 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2882 mGlobalProxy = proxy; 2883 sendProxyBroadcast(mGlobalProxy); 2884 return; 2885 } 2886 mDefaultProxy = proxy; 2887 2888 if (mGlobalProxy != null) return; 2889 if (!mDefaultProxyDisabled) { 2890 sendProxyBroadcast(proxy); 2891 } 2892 } 2893 } 2894 2895 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2896 // This method gets called when any network changes proxy, but the broadcast only ever contains 2897 // the default proxy (even if it hasn't changed). 2898 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2899 // world where an app might be bound to a non-default network. 2900 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2901 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2902 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2903 2904 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2905 sendProxyBroadcast(getDefaultProxy()); 2906 } 2907 } 2908 2909 private void handleDeprecatedGlobalHttpProxy() { 2910 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2911 Settings.Global.HTTP_PROXY); 2912 if (!TextUtils.isEmpty(proxy)) { 2913 String data[] = proxy.split(":"); 2914 if (data.length == 0) { 2915 return; 2916 } 2917 2918 String proxyHost = data[0]; 2919 int proxyPort = 8080; 2920 if (data.length > 1) { 2921 try { 2922 proxyPort = Integer.parseInt(data[1]); 2923 } catch (NumberFormatException e) { 2924 return; 2925 } 2926 } 2927 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2928 setGlobalProxy(p); 2929 } 2930 } 2931 2932 private void sendProxyBroadcast(ProxyInfo proxy) { 2933 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2934 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2935 if (DBG) log("sending Proxy Broadcast for " + proxy); 2936 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2937 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2938 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2939 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2940 final long ident = Binder.clearCallingIdentity(); 2941 try { 2942 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2943 } finally { 2944 Binder.restoreCallingIdentity(ident); 2945 } 2946 } 2947 2948 private static class SettingsObserver extends ContentObserver { 2949 final private HashMap<Uri, Integer> mUriEventMap; 2950 final private Context mContext; 2951 final private Handler mHandler; 2952 2953 SettingsObserver(Context context, Handler handler) { 2954 super(null); 2955 mUriEventMap = new HashMap<Uri, Integer>(); 2956 mContext = context; 2957 mHandler = handler; 2958 } 2959 2960 void observe(Uri uri, int what) { 2961 mUriEventMap.put(uri, what); 2962 final ContentResolver resolver = mContext.getContentResolver(); 2963 resolver.registerContentObserver(uri, false, this); 2964 } 2965 2966 @Override 2967 public void onChange(boolean selfChange) { 2968 Slog.wtf(TAG, "Should never be reached."); 2969 } 2970 2971 @Override 2972 public void onChange(boolean selfChange, Uri uri) { 2973 final Integer what = mUriEventMap.get(uri); 2974 if (what != null) { 2975 mHandler.obtainMessage(what.intValue()).sendToTarget(); 2976 } else { 2977 loge("No matching event to send for URI=" + uri); 2978 } 2979 } 2980 } 2981 2982 private static void log(String s) { 2983 Slog.d(TAG, s); 2984 } 2985 2986 private static void loge(String s) { 2987 Slog.e(TAG, s); 2988 } 2989 2990 private static <T> T checkNotNull(T value, String message) { 2991 if (value == null) { 2992 throw new NullPointerException(message); 2993 } 2994 return value; 2995 } 2996 2997 /** 2998 * Prepare for a VPN application. 2999 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3000 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3001 * 3002 * @param oldPackage Package name of the application which currently controls VPN, which will 3003 * be replaced. If there is no such application, this should should either be 3004 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3005 * @param newPackage Package name of the application which should gain control of VPN, or 3006 * {@code null} to disable. 3007 * @param userId User for whom to prepare the new VPN. 3008 * 3009 * @hide 3010 */ 3011 @Override 3012 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3013 int userId) { 3014 enforceCrossUserPermission(userId); 3015 throwIfLockdownEnabled(); 3016 3017 synchronized(mVpns) { 3018 Vpn vpn = mVpns.get(userId); 3019 if (vpn != null) { 3020 return vpn.prepare(oldPackage, newPackage); 3021 } else { 3022 return false; 3023 } 3024 } 3025 } 3026 3027 /** 3028 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3029 * This method is used by system-privileged apps. 3030 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3031 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3032 * 3033 * @param packageName The package for which authorization state should change. 3034 * @param userId User for whom {@code packageName} is installed. 3035 * @param authorized {@code true} if this app should be able to start a VPN connection without 3036 * explicit user approval, {@code false} if not. 3037 * 3038 * @hide 3039 */ 3040 @Override 3041 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3042 enforceCrossUserPermission(userId); 3043 3044 synchronized(mVpns) { 3045 Vpn vpn = mVpns.get(userId); 3046 if (vpn != null) { 3047 vpn.setPackageAuthorization(packageName, authorized); 3048 } 3049 } 3050 } 3051 3052 /** 3053 * Configure a TUN interface and return its file descriptor. Parameters 3054 * are encoded and opaque to this class. This method is used by VpnBuilder 3055 * and not available in ConnectivityManager. Permissions are checked in 3056 * Vpn class. 3057 * @hide 3058 */ 3059 @Override 3060 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3061 throwIfLockdownEnabled(); 3062 int user = UserHandle.getUserId(Binder.getCallingUid()); 3063 synchronized(mVpns) { 3064 return mVpns.get(user).establish(config); 3065 } 3066 } 3067 3068 /** 3069 * Start legacy VPN, controlling native daemons as needed. Creates a 3070 * secondary thread to perform connection work, returning quickly. 3071 */ 3072 @Override 3073 public void startLegacyVpn(VpnProfile profile) { 3074 throwIfLockdownEnabled(); 3075 final LinkProperties egress = getActiveLinkProperties(); 3076 if (egress == null) { 3077 throw new IllegalStateException("Missing active network connection"); 3078 } 3079 int user = UserHandle.getUserId(Binder.getCallingUid()); 3080 synchronized(mVpns) { 3081 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3082 } 3083 } 3084 3085 /** 3086 * Return the information of the ongoing legacy VPN. This method is used 3087 * by VpnSettings and not available in ConnectivityManager. Permissions 3088 * are checked in Vpn class. 3089 */ 3090 @Override 3091 public LegacyVpnInfo getLegacyVpnInfo(int userId) { 3092 enforceCrossUserPermission(userId); 3093 throwIfLockdownEnabled(); 3094 synchronized(mVpns) { 3095 return mVpns.get(userId).getLegacyVpnInfo(); 3096 } 3097 } 3098 3099 /** 3100 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3101 * and not available in ConnectivityManager. 3102 */ 3103 @Override 3104 public VpnInfo[] getAllVpnInfo() { 3105 enforceConnectivityInternalPermission(); 3106 if (mLockdownEnabled) { 3107 return new VpnInfo[0]; 3108 } 3109 3110 synchronized(mVpns) { 3111 List<VpnInfo> infoList = new ArrayList<>(); 3112 for (int i = 0; i < mVpns.size(); i++) { 3113 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3114 if (info != null) { 3115 infoList.add(info); 3116 } 3117 } 3118 return infoList.toArray(new VpnInfo[infoList.size()]); 3119 } 3120 } 3121 3122 /** 3123 * @return VPN information for accounting, or null if we can't retrieve all required 3124 * information, e.g primary underlying iface. 3125 */ 3126 @Nullable 3127 private VpnInfo createVpnInfo(Vpn vpn) { 3128 VpnInfo info = vpn.getVpnInfo(); 3129 if (info == null) { 3130 return null; 3131 } 3132 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3133 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3134 // the underlyingNetworks list. 3135 if (underlyingNetworks == null) { 3136 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3137 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3138 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3139 } 3140 } else if (underlyingNetworks.length > 0) { 3141 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3142 if (linkProperties != null) { 3143 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3144 } 3145 } 3146 return info.primaryUnderlyingIface == null ? null : info; 3147 } 3148 3149 /** 3150 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3151 * VpnDialogs and not available in ConnectivityManager. 3152 * Permissions are checked in Vpn class. 3153 * @hide 3154 */ 3155 @Override 3156 public VpnConfig getVpnConfig(int userId) { 3157 enforceCrossUserPermission(userId); 3158 synchronized(mVpns) { 3159 Vpn vpn = mVpns.get(userId); 3160 if (vpn != null) { 3161 return vpn.getVpnConfig(); 3162 } else { 3163 return null; 3164 } 3165 } 3166 } 3167 3168 @Override 3169 public boolean updateLockdownVpn() { 3170 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3171 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3172 return false; 3173 } 3174 3175 // Tear down existing lockdown if profile was removed 3176 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3177 if (mLockdownEnabled) { 3178 if (!mKeyStore.isUnlocked()) { 3179 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3180 return false; 3181 } 3182 3183 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3184 final VpnProfile profile = VpnProfile.decode( 3185 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3186 int user = UserHandle.getUserId(Binder.getCallingUid()); 3187 synchronized(mVpns) { 3188 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3189 profile)); 3190 } 3191 } else { 3192 setLockdownTracker(null); 3193 } 3194 3195 return true; 3196 } 3197 3198 /** 3199 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3200 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3201 */ 3202 private void setLockdownTracker(LockdownVpnTracker tracker) { 3203 // Shutdown any existing tracker 3204 final LockdownVpnTracker existing = mLockdownTracker; 3205 mLockdownTracker = null; 3206 if (existing != null) { 3207 existing.shutdown(); 3208 } 3209 3210 try { 3211 if (tracker != null) { 3212 mNetd.setFirewallEnabled(true); 3213 mNetd.setFirewallInterfaceRule("lo", true); 3214 mLockdownTracker = tracker; 3215 mLockdownTracker.init(); 3216 } else { 3217 mNetd.setFirewallEnabled(false); 3218 } 3219 } catch (RemoteException e) { 3220 // ignored; NMS lives inside system_server 3221 } 3222 } 3223 3224 private void throwIfLockdownEnabled() { 3225 if (mLockdownEnabled) { 3226 throw new IllegalStateException("Unavailable in lockdown mode"); 3227 } 3228 } 3229 3230 @Override 3231 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3232 // TODO: Remove? Any reason to trigger a provisioning check? 3233 return -1; 3234 } 3235 3236 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3237 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3238 3239 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3240 if (DBG) { 3241 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3242 + " action=" + action); 3243 } 3244 Intent intent = new Intent(action); 3245 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3246 // Concatenate the range of types onto the range of NetIDs. 3247 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3248 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3249 networkType, null, pendingIntent, false); 3250 } 3251 3252 /** 3253 * Show or hide network provisioning notifications. 3254 * 3255 * We use notifications for two purposes: to notify that a network requires sign in 3256 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3257 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3258 * particular network we can display the notification type that was most recently requested. 3259 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3260 * might first display NO_INTERNET, and then when the captive portal check completes, display 3261 * SIGN_IN. 3262 * 3263 * @param id an identifier that uniquely identifies this notification. This must match 3264 * between show and hide calls. We use the NetID value but for legacy callers 3265 * we concatenate the range of types with the range of NetIDs. 3266 */ 3267 private void setProvNotificationVisibleIntent(boolean visible, int id, 3268 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent, 3269 boolean highPriority) { 3270 if (DBG) { 3271 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3272 + " networkType=" + getNetworkTypeName(networkType) 3273 + " extraInfo=" + extraInfo + " highPriority=" + highPriority); 3274 } 3275 3276 Resources r = Resources.getSystem(); 3277 NotificationManager notificationManager = (NotificationManager) mContext 3278 .getSystemService(Context.NOTIFICATION_SERVICE); 3279 3280 if (visible) { 3281 CharSequence title; 3282 CharSequence details; 3283 int icon; 3284 if (notifyType == NotificationType.NO_INTERNET && 3285 networkType == ConnectivityManager.TYPE_WIFI) { 3286 title = r.getString(R.string.wifi_no_internet, 0); 3287 details = r.getString(R.string.wifi_no_internet_detailed); 3288 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3289 } else if (notifyType == NotificationType.SIGN_IN) { 3290 switch (networkType) { 3291 case ConnectivityManager.TYPE_WIFI: 3292 title = r.getString(R.string.wifi_available_sign_in, 0); 3293 details = r.getString(R.string.network_available_sign_in_detailed, 3294 extraInfo); 3295 icon = R.drawable.stat_notify_wifi_in_range; 3296 break; 3297 case ConnectivityManager.TYPE_MOBILE: 3298 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3299 title = r.getString(R.string.network_available_sign_in, 0); 3300 // TODO: Change this to pull from NetworkInfo once a printable 3301 // name has been added to it 3302 details = mTelephonyManager.getNetworkOperatorName(); 3303 icon = R.drawable.stat_notify_rssi_in_range; 3304 break; 3305 default: 3306 title = r.getString(R.string.network_available_sign_in, 0); 3307 details = r.getString(R.string.network_available_sign_in_detailed, 3308 extraInfo); 3309 icon = R.drawable.stat_notify_rssi_in_range; 3310 break; 3311 } 3312 } else { 3313 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3314 + getNetworkTypeName(networkType)); 3315 return; 3316 } 3317 3318 Notification notification = new Notification.Builder(mContext) 3319 .setWhen(0) 3320 .setSmallIcon(icon) 3321 .setAutoCancel(true) 3322 .setTicker(title) 3323 .setColor(mContext.getColor( 3324 com.android.internal.R.color.system_notification_accent_color)) 3325 .setContentTitle(title) 3326 .setContentText(details) 3327 .setContentIntent(intent) 3328 .setLocalOnly(true) 3329 .setPriority(highPriority ? 3330 Notification.PRIORITY_HIGH : 3331 Notification.PRIORITY_DEFAULT) 3332 .setDefaults(Notification.DEFAULT_ALL) 3333 .setOnlyAlertOnce(true) 3334 .build(); 3335 3336 try { 3337 notificationManager.notify(NOTIFICATION_ID, id, notification); 3338 } catch (NullPointerException npe) { 3339 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3340 npe.printStackTrace(); 3341 } 3342 } else { 3343 try { 3344 notificationManager.cancel(NOTIFICATION_ID, id); 3345 } catch (NullPointerException npe) { 3346 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3347 npe.printStackTrace(); 3348 } 3349 } 3350 } 3351 3352 /** Location to an updatable file listing carrier provisioning urls. 3353 * An example: 3354 * 3355 * <?xml version="1.0" encoding="utf-8"?> 3356 * <provisioningUrls> 3357 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3358 * </provisioningUrls> 3359 */ 3360 private static final String PROVISIONING_URL_PATH = 3361 "/data/misc/radio/provisioning_urls.xml"; 3362 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3363 3364 /** XML tag for root element. */ 3365 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3366 /** XML tag for individual url */ 3367 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3368 /** XML attribute for mcc */ 3369 private static final String ATTR_MCC = "mcc"; 3370 /** XML attribute for mnc */ 3371 private static final String ATTR_MNC = "mnc"; 3372 3373 private String getProvisioningUrlBaseFromFile() { 3374 FileReader fileReader = null; 3375 XmlPullParser parser = null; 3376 Configuration config = mContext.getResources().getConfiguration(); 3377 3378 try { 3379 fileReader = new FileReader(mProvisioningUrlFile); 3380 parser = Xml.newPullParser(); 3381 parser.setInput(fileReader); 3382 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3383 3384 while (true) { 3385 XmlUtils.nextElement(parser); 3386 3387 String element = parser.getName(); 3388 if (element == null) break; 3389 3390 if (element.equals(TAG_PROVISIONING_URL)) { 3391 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3392 try { 3393 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3394 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3395 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3396 parser.next(); 3397 if (parser.getEventType() == XmlPullParser.TEXT) { 3398 return parser.getText(); 3399 } 3400 } 3401 } 3402 } catch (NumberFormatException e) { 3403 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3404 } 3405 } 3406 } 3407 return null; 3408 } catch (FileNotFoundException e) { 3409 loge("Carrier Provisioning Urls file not found"); 3410 } catch (XmlPullParserException e) { 3411 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3412 } catch (IOException e) { 3413 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3414 } finally { 3415 if (fileReader != null) { 3416 try { 3417 fileReader.close(); 3418 } catch (IOException e) {} 3419 } 3420 } 3421 return null; 3422 } 3423 3424 @Override 3425 public String getMobileProvisioningUrl() { 3426 enforceConnectivityInternalPermission(); 3427 String url = getProvisioningUrlBaseFromFile(); 3428 if (TextUtils.isEmpty(url)) { 3429 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3430 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3431 } else { 3432 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3433 } 3434 // populate the iccid, imei and phone number in the provisioning url. 3435 if (!TextUtils.isEmpty(url)) { 3436 String phoneNumber = mTelephonyManager.getLine1Number(); 3437 if (TextUtils.isEmpty(phoneNumber)) { 3438 phoneNumber = "0000000000"; 3439 } 3440 url = String.format(url, 3441 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3442 mTelephonyManager.getDeviceId() /* IMEI */, 3443 phoneNumber /* Phone numer */); 3444 } 3445 3446 return url; 3447 } 3448 3449 @Override 3450 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3451 String action) { 3452 enforceConnectivityInternalPermission(); 3453 final long ident = Binder.clearCallingIdentity(); 3454 try { 3455 setProvNotificationVisible(visible, networkType, action); 3456 } finally { 3457 Binder.restoreCallingIdentity(ident); 3458 } 3459 } 3460 3461 @Override 3462 public void setAirplaneMode(boolean enable) { 3463 enforceConnectivityInternalPermission(); 3464 final long ident = Binder.clearCallingIdentity(); 3465 try { 3466 final ContentResolver cr = mContext.getContentResolver(); 3467 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3468 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3469 intent.putExtra("state", enable); 3470 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3471 } finally { 3472 Binder.restoreCallingIdentity(ident); 3473 } 3474 } 3475 3476 private void onUserStart(int userId) { 3477 synchronized(mVpns) { 3478 Vpn userVpn = mVpns.get(userId); 3479 if (userVpn != null) { 3480 loge("Starting user already has a VPN"); 3481 return; 3482 } 3483 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3484 mVpns.put(userId, userVpn); 3485 } 3486 } 3487 3488 private void onUserStop(int userId) { 3489 synchronized(mVpns) { 3490 Vpn userVpn = mVpns.get(userId); 3491 if (userVpn == null) { 3492 loge("Stopping user has no VPN"); 3493 return; 3494 } 3495 mVpns.delete(userId); 3496 } 3497 } 3498 3499 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3500 @Override 3501 public void onReceive(Context context, Intent intent) { 3502 final String action = intent.getAction(); 3503 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3504 if (userId == UserHandle.USER_NULL) return; 3505 3506 if (Intent.ACTION_USER_STARTING.equals(action)) { 3507 onUserStart(userId); 3508 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3509 onUserStop(userId); 3510 } 3511 } 3512 }; 3513 3514 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3515 new HashMap<Messenger, NetworkFactoryInfo>(); 3516 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3517 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3518 3519 private static class NetworkFactoryInfo { 3520 public final String name; 3521 public final Messenger messenger; 3522 public final AsyncChannel asyncChannel; 3523 3524 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3525 this.name = name; 3526 this.messenger = messenger; 3527 this.asyncChannel = asyncChannel; 3528 } 3529 } 3530 3531 /** 3532 * Tracks info about the requester. 3533 * Also used to notice when the calling process dies so we can self-expire 3534 */ 3535 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3536 static final boolean REQUEST = true; 3537 static final boolean LISTEN = false; 3538 3539 final NetworkRequest request; 3540 final PendingIntent mPendingIntent; 3541 boolean mPendingIntentSent; 3542 private final IBinder mBinder; 3543 final int mPid; 3544 final int mUid; 3545 final Messenger messenger; 3546 final boolean isRequest; 3547 3548 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3549 request = r; 3550 mPendingIntent = pi; 3551 messenger = null; 3552 mBinder = null; 3553 mPid = getCallingPid(); 3554 mUid = getCallingUid(); 3555 this.isRequest = isRequest; 3556 } 3557 3558 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3559 super(); 3560 messenger = m; 3561 request = r; 3562 mBinder = binder; 3563 mPid = getCallingPid(); 3564 mUid = getCallingUid(); 3565 this.isRequest = isRequest; 3566 mPendingIntent = null; 3567 3568 try { 3569 mBinder.linkToDeath(this, 0); 3570 } catch (RemoteException e) { 3571 binderDied(); 3572 } 3573 } 3574 3575 void unlinkDeathRecipient() { 3576 if (mBinder != null) { 3577 mBinder.unlinkToDeath(this, 0); 3578 } 3579 } 3580 3581 public void binderDied() { 3582 log("ConnectivityService NetworkRequestInfo binderDied(" + 3583 request + ", " + mBinder + ")"); 3584 releaseNetworkRequest(request); 3585 } 3586 3587 public String toString() { 3588 return (isRequest ? "Request" : "Listen") + 3589 " from uid/pid:" + mUid + "/" + mPid + 3590 " for " + request + 3591 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3592 } 3593 } 3594 3595 private void ensureRequestableCapabilities(NetworkCapabilities networkCapabilities) { 3596 final String badCapability = networkCapabilities.describeFirstNonRequestableCapability(); 3597 if (badCapability != null) { 3598 throw new IllegalArgumentException("Cannot request network with " + badCapability); 3599 } 3600 } 3601 3602 @Override 3603 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3604 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3605 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3606 enforceNetworkRequestPermissions(networkCapabilities); 3607 enforceMeteredApnPolicy(networkCapabilities); 3608 ensureRequestableCapabilities(networkCapabilities); 3609 3610 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3611 throw new IllegalArgumentException("Bad timeout specified"); 3612 } 3613 3614 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3615 nextNetworkRequestId()); 3616 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3617 NetworkRequestInfo.REQUEST); 3618 if (DBG) log("requestNetwork for " + nri); 3619 3620 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3621 if (timeoutMs > 0) { 3622 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3623 nri), timeoutMs); 3624 } 3625 return networkRequest; 3626 } 3627 3628 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3629 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3630 enforceConnectivityInternalPermission(); 3631 } else { 3632 enforceChangePermission(); 3633 } 3634 } 3635 3636 @Override 3637 public boolean requestBandwidthUpdate(Network network) { 3638 enforceAccessPermission(); 3639 NetworkAgentInfo nai = null; 3640 if (network == null) { 3641 return false; 3642 } 3643 synchronized (mNetworkForNetId) { 3644 nai = mNetworkForNetId.get(network.netId); 3645 } 3646 if (nai != null) { 3647 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3648 return true; 3649 } 3650 return false; 3651 } 3652 3653 3654 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3655 // if UID is restricted, don't allow them to bring up metered APNs 3656 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3657 final int uidRules; 3658 final int uid = Binder.getCallingUid(); 3659 synchronized(mRulesLock) { 3660 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3661 } 3662 if ((uidRules & (RULE_REJECT_METERED | RULE_REJECT_ALL)) != 0) { 3663 // we could silently fail or we can filter the available nets to only give 3664 // them those they have access to. Chose the more useful 3665 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3666 } 3667 } 3668 } 3669 3670 @Override 3671 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3672 PendingIntent operation) { 3673 checkNotNull(operation, "PendingIntent cannot be null."); 3674 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3675 enforceNetworkRequestPermissions(networkCapabilities); 3676 enforceMeteredApnPolicy(networkCapabilities); 3677 ensureRequestableCapabilities(networkCapabilities); 3678 3679 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3680 nextNetworkRequestId()); 3681 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3682 NetworkRequestInfo.REQUEST); 3683 if (DBG) log("pendingRequest for " + nri); 3684 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3685 nri)); 3686 return networkRequest; 3687 } 3688 3689 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3690 mHandler.sendMessageDelayed( 3691 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3692 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3693 } 3694 3695 @Override 3696 public void releasePendingNetworkRequest(PendingIntent operation) { 3697 checkNotNull(operation, "PendingIntent cannot be null."); 3698 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3699 getCallingUid(), 0, operation)); 3700 } 3701 3702 // In order to implement the compatibility measure for pre-M apps that call 3703 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3704 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3705 // This ensures it has permission to do so. 3706 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3707 if (nc == null) { 3708 return false; 3709 } 3710 int[] transportTypes = nc.getTransportTypes(); 3711 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3712 return false; 3713 } 3714 try { 3715 mContext.enforceCallingOrSelfPermission( 3716 android.Manifest.permission.ACCESS_WIFI_STATE, 3717 "ConnectivityService"); 3718 } catch (SecurityException e) { 3719 return false; 3720 } 3721 return true; 3722 } 3723 3724 @Override 3725 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3726 Messenger messenger, IBinder binder) { 3727 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3728 enforceAccessPermission(); 3729 } 3730 3731 NetworkRequest networkRequest = new NetworkRequest( 3732 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3733 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3734 NetworkRequestInfo.LISTEN); 3735 if (DBG) log("listenForNetwork for " + nri); 3736 3737 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3738 return networkRequest; 3739 } 3740 3741 @Override 3742 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3743 PendingIntent operation) { 3744 checkNotNull(operation, "PendingIntent cannot be null."); 3745 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3746 enforceAccessPermission(); 3747 } 3748 3749 NetworkRequest networkRequest = new NetworkRequest( 3750 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3751 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3752 NetworkRequestInfo.LISTEN); 3753 if (DBG) log("pendingListenForNetwork for " + nri); 3754 3755 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3756 } 3757 3758 @Override 3759 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3760 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3761 0, networkRequest)); 3762 } 3763 3764 @Override 3765 public void registerNetworkFactory(Messenger messenger, String name) { 3766 enforceConnectivityInternalPermission(); 3767 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3768 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3769 } 3770 3771 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3772 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3773 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3774 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3775 } 3776 3777 @Override 3778 public void unregisterNetworkFactory(Messenger messenger) { 3779 enforceConnectivityInternalPermission(); 3780 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3781 } 3782 3783 private void handleUnregisterNetworkFactory(Messenger messenger) { 3784 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3785 if (nfi == null) { 3786 loge("Failed to find Messenger in unregisterNetworkFactory"); 3787 return; 3788 } 3789 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3790 } 3791 3792 /** 3793 * NetworkAgentInfo supporting a request by requestId. 3794 * These have already been vetted (their Capabilities satisfy the request) 3795 * and the are the highest scored network available. 3796 * the are keyed off the Requests requestId. 3797 */ 3798 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 3799 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3800 new SparseArray<NetworkAgentInfo>(); 3801 3802 // NOTE: Accessed on multiple threads, must be synchronized on itself. 3803 @GuardedBy("mNetworkForNetId") 3804 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3805 new SparseArray<NetworkAgentInfo>(); 3806 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 3807 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 3808 // there may not be a strict 1:1 correlation between the two. 3809 @GuardedBy("mNetworkForNetId") 3810 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 3811 3812 // NetworkAgentInfo keyed off its connecting messenger 3813 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3814 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 3815 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3816 new HashMap<Messenger, NetworkAgentInfo>(); 3817 3818 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3819 private final NetworkRequest mDefaultRequest; 3820 3821 // Request used to optionally keep mobile data active even when higher 3822 // priority networks like Wi-Fi are active. 3823 private final NetworkRequest mDefaultMobileDataRequest; 3824 3825 private NetworkAgentInfo getDefaultNetwork() { 3826 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3827 } 3828 3829 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3830 return nai == getDefaultNetwork(); 3831 } 3832 3833 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3834 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3835 int currentScore, NetworkMisc networkMisc) { 3836 enforceConnectivityInternalPermission(); 3837 3838 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3839 // satisfies mDefaultRequest. 3840 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3841 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 3842 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 3843 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest); 3844 synchronized (this) { 3845 nai.networkMonitor.systemReady = mSystemReady; 3846 } 3847 addValidationLogs(nai.networkMonitor.getValidationLogs(), nai.network); 3848 if (DBG) log("registerNetworkAgent " + nai); 3849 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3850 return nai.network.netId; 3851 } 3852 3853 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3854 if (VDBG) log("Got NetworkAgent Messenger"); 3855 mNetworkAgentInfos.put(na.messenger, na); 3856 synchronized (mNetworkForNetId) { 3857 mNetworkForNetId.put(na.network.netId, na); 3858 } 3859 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3860 NetworkInfo networkInfo = na.networkInfo; 3861 na.networkInfo = null; 3862 updateNetworkInfo(na, networkInfo); 3863 } 3864 3865 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3866 LinkProperties newLp = networkAgent.linkProperties; 3867 int netId = networkAgent.network.netId; 3868 3869 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3870 // we do anything else, make sure its LinkProperties are accurate. 3871 if (networkAgent.clatd != null) { 3872 networkAgent.clatd.fixupLinkProperties(oldLp); 3873 } 3874 3875 updateInterfaces(newLp, oldLp, netId); 3876 updateMtu(newLp, oldLp); 3877 // TODO - figure out what to do for clat 3878// for (LinkProperties lp : newLp.getStackedLinks()) { 3879// updateMtu(lp, null); 3880// } 3881 updateTcpBufferSizes(networkAgent); 3882 3883 // TODO: deprecate and remove mDefaultDns when we can do so safely. See http://b/18327075 3884 // In L, we used it only when the network had Internet access but provided no DNS servers. 3885 // For now, just disable it, and if disabling it doesn't break things, remove it. 3886 // final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3887 // NET_CAPABILITY_INTERNET); 3888 final boolean useDefaultDns = false; 3889 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3890 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3891 3892 updateClat(newLp, oldLp, networkAgent); 3893 if (isDefaultNetwork(networkAgent)) { 3894 handleApplyDefaultProxy(newLp.getHttpProxy()); 3895 } else { 3896 updateProxy(newLp, oldLp, networkAgent); 3897 } 3898 // TODO - move this check to cover the whole function 3899 if (!Objects.equals(newLp, oldLp)) { 3900 notifyIfacesChanged(); 3901 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3902 } 3903 3904 mKeepaliveTracker.handleCheckKeepalivesStillValid(networkAgent); 3905 } 3906 3907 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3908 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3909 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3910 3911 if (!wasRunningClat && shouldRunClat) { 3912 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3913 nai.clatd.start(); 3914 } else if (wasRunningClat && !shouldRunClat) { 3915 nai.clatd.stop(); 3916 } 3917 } 3918 3919 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3920 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3921 if (oldLp != null) { 3922 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3923 } else if (newLp != null) { 3924 interfaceDiff.added = newLp.getAllInterfaceNames(); 3925 } 3926 for (String iface : interfaceDiff.added) { 3927 try { 3928 if (DBG) log("Adding iface " + iface + " to network " + netId); 3929 mNetd.addInterfaceToNetwork(iface, netId); 3930 } catch (Exception e) { 3931 loge("Exception adding interface: " + e); 3932 } 3933 } 3934 for (String iface : interfaceDiff.removed) { 3935 try { 3936 if (DBG) log("Removing iface " + iface + " from network " + netId); 3937 mNetd.removeInterfaceFromNetwork(iface, netId); 3938 } catch (Exception e) { 3939 loge("Exception removing interface: " + e); 3940 } 3941 } 3942 } 3943 3944 /** 3945 * Have netd update routes from oldLp to newLp. 3946 * @return true if routes changed between oldLp and newLp 3947 */ 3948 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3949 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3950 if (oldLp != null) { 3951 routeDiff = oldLp.compareAllRoutes(newLp); 3952 } else if (newLp != null) { 3953 routeDiff.added = newLp.getAllRoutes(); 3954 } 3955 3956 // add routes before removing old in case it helps with continuous connectivity 3957 3958 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3959 for (RouteInfo route : routeDiff.added) { 3960 if (route.hasGateway()) continue; 3961 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3962 try { 3963 mNetd.addRoute(netId, route); 3964 } catch (Exception e) { 3965 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3966 loge("Exception in addRoute for non-gateway: " + e); 3967 } 3968 } 3969 } 3970 for (RouteInfo route : routeDiff.added) { 3971 if (route.hasGateway() == false) continue; 3972 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3973 try { 3974 mNetd.addRoute(netId, route); 3975 } catch (Exception e) { 3976 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3977 loge("Exception in addRoute for gateway: " + e); 3978 } 3979 } 3980 } 3981 3982 for (RouteInfo route : routeDiff.removed) { 3983 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3984 try { 3985 mNetd.removeRoute(netId, route); 3986 } catch (Exception e) { 3987 loge("Exception in removeRoute: " + e); 3988 } 3989 } 3990 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3991 } 3992 3993 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 3994 boolean flush, boolean useDefaultDns) { 3995 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 3996 Collection<InetAddress> dnses = newLp.getDnsServers(); 3997 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 3998 dnses = new ArrayList(); 3999 dnses.add(mDefaultDns); 4000 if (DBG) { 4001 loge("no dns provided for netId " + netId + ", so using defaults"); 4002 } 4003 } 4004 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 4005 try { 4006 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 4007 newLp.getDomains()); 4008 } catch (Exception e) { 4009 loge("Exception in setDnsServersForNetwork: " + e); 4010 } 4011 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 4012 if (defaultNai != null && defaultNai.network.netId == netId) { 4013 setDefaultDnsSystemProperties(dnses); 4014 } 4015 flushVmDnsCache(); 4016 } else if (flush) { 4017 try { 4018 mNetd.flushNetworkDnsCache(netId); 4019 } catch (Exception e) { 4020 loge("Exception in flushNetworkDnsCache: " + e); 4021 } 4022 flushVmDnsCache(); 4023 } 4024 } 4025 4026 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4027 int last = 0; 4028 for (InetAddress dns : dnses) { 4029 ++last; 4030 String key = "net.dns" + last; 4031 String value = dns.getHostAddress(); 4032 SystemProperties.set(key, value); 4033 } 4034 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4035 String key = "net.dns" + i; 4036 SystemProperties.set(key, ""); 4037 } 4038 mNumDnsEntries = last; 4039 } 4040 4041 /** 4042 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 4043 * augmented with any stateful capabilities implied from {@code networkAgent} 4044 * (e.g., validated status and captive portal status). 4045 * 4046 * @param nai the network having its capabilities updated. 4047 * @param networkCapabilities the new network capabilities. 4048 */ 4049 private void updateCapabilities(NetworkAgentInfo nai, NetworkCapabilities networkCapabilities) { 4050 // Don't modify caller's NetworkCapabilities. 4051 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4052 if (nai.lastValidated) { 4053 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4054 } else { 4055 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4056 } 4057 if (nai.lastCaptivePortalDetected) { 4058 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4059 } else { 4060 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4061 } 4062 if (!Objects.equals(nai.networkCapabilities, networkCapabilities)) { 4063 final int oldScore = nai.getCurrentScore(); 4064 synchronized (nai) { 4065 nai.networkCapabilities = networkCapabilities; 4066 } 4067 rematchAllNetworksAndRequests(nai, oldScore); 4068 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 4069 } 4070 } 4071 4072 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4073 for (int i = 0; i < nai.networkRequests.size(); i++) { 4074 NetworkRequest nr = nai.networkRequests.valueAt(i); 4075 // Don't send listening requests to factories. b/17393458 4076 if (!isRequest(nr)) continue; 4077 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4078 } 4079 } 4080 4081 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4082 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4083 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4084 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4085 networkRequest); 4086 } 4087 } 4088 4089 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4090 int notificationType) { 4091 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4092 Intent intent = new Intent(); 4093 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4094 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4095 nri.mPendingIntentSent = true; 4096 sendIntent(nri.mPendingIntent, intent); 4097 } 4098 // else not handled 4099 } 4100 4101 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4102 mPendingIntentWakeLock.acquire(); 4103 try { 4104 if (DBG) log("Sending " + pendingIntent); 4105 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4106 } catch (PendingIntent.CanceledException e) { 4107 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4108 mPendingIntentWakeLock.release(); 4109 releasePendingNetworkRequest(pendingIntent); 4110 } 4111 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4112 } 4113 4114 @Override 4115 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4116 String resultData, Bundle resultExtras) { 4117 if (DBG) log("Finished sending " + pendingIntent); 4118 mPendingIntentWakeLock.release(); 4119 // Release with a delay so the receiving client has an opportunity to put in its 4120 // own request. 4121 releasePendingNetworkRequestWithDelay(pendingIntent); 4122 } 4123 4124 private void callCallbackForRequest(NetworkRequestInfo nri, 4125 NetworkAgentInfo networkAgent, int notificationType) { 4126 if (nri.messenger == null) return; // Default request has no msgr 4127 Bundle bundle = new Bundle(); 4128 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4129 new NetworkRequest(nri.request)); 4130 Message msg = Message.obtain(); 4131 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4132 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4133 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4134 } 4135 switch (notificationType) { 4136 case ConnectivityManager.CALLBACK_LOSING: { 4137 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4138 break; 4139 } 4140 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4141 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4142 new NetworkCapabilities(networkAgent.networkCapabilities)); 4143 break; 4144 } 4145 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4146 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4147 new LinkProperties(networkAgent.linkProperties)); 4148 break; 4149 } 4150 } 4151 msg.what = notificationType; 4152 msg.setData(bundle); 4153 try { 4154 if (VDBG) { 4155 log("sending notification " + notifyTypeToName(notificationType) + 4156 " for " + nri.request); 4157 } 4158 nri.messenger.send(msg); 4159 } catch (RemoteException e) { 4160 // may occur naturally in the race of binder death. 4161 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4162 } 4163 } 4164 4165 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4166 for (int i = 0; i < nai.networkRequests.size(); i++) { 4167 NetworkRequest nr = nai.networkRequests.valueAt(i); 4168 // Ignore listening requests. 4169 if (!isRequest(nr)) continue; 4170 loge("Dead network still had at least " + nr); 4171 break; 4172 } 4173 nai.asyncChannel.disconnect(); 4174 } 4175 4176 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4177 if (oldNetwork == null) { 4178 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4179 return; 4180 } 4181 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4182 teardownUnneededNetwork(oldNetwork); 4183 } 4184 4185 private void makeDefault(NetworkAgentInfo newNetwork) { 4186 if (DBG) log("Switching to new default network: " + newNetwork); 4187 setupDataActivityTracking(newNetwork); 4188 try { 4189 mNetd.setDefaultNetId(newNetwork.network.netId); 4190 } catch (Exception e) { 4191 loge("Exception setting default network :" + e); 4192 } 4193 notifyLockdownVpn(newNetwork); 4194 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4195 updateTcpBufferSizes(newNetwork); 4196 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4197 } 4198 4199 // Handles a network appearing or improving its score. 4200 // 4201 // - Evaluates all current NetworkRequests that can be 4202 // satisfied by newNetwork, and reassigns to newNetwork 4203 // any such requests for which newNetwork is the best. 4204 // 4205 // - Lingers any validated Networks that as a result are no longer 4206 // needed. A network is needed if it is the best network for 4207 // one or more NetworkRequests, or if it is a VPN. 4208 // 4209 // - Tears down newNetwork if it just became validated 4210 // but turns out to be unneeded. 4211 // 4212 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4213 // networks that have no chance (i.e. even if validated) 4214 // of becoming the highest scoring network. 4215 // 4216 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4217 // it does not remove NetworkRequests that other Networks could better satisfy. 4218 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4219 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4220 // as it performs better by a factor of the number of Networks. 4221 // 4222 // @param newNetwork is the network to be matched against NetworkRequests. 4223 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4224 // performed to tear down unvalidated networks that have no chance (i.e. even if 4225 // validated) of becoming the highest scoring network. 4226 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, 4227 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4228 if (!newNetwork.created) return; 4229 boolean keep = newNetwork.isVPN(); 4230 boolean isNewDefault = false; 4231 NetworkAgentInfo oldDefaultNetwork = null; 4232 if (DBG) log("rematching " + newNetwork.name()); 4233 // Find and migrate to this Network any NetworkRequests for 4234 // which this network is now the best. 4235 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4236 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4237 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4238 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4239 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4240 if (newNetwork == currentNetwork) { 4241 if (VDBG) { 4242 log("Network " + newNetwork.name() + " was already satisfying" + 4243 " request " + nri.request.requestId + ". No change."); 4244 } 4245 keep = true; 4246 continue; 4247 } 4248 4249 // check if it satisfies the NetworkCapabilities 4250 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4251 if (newNetwork.satisfies(nri.request)) { 4252 if (!nri.isRequest) { 4253 // This is not a request, it's a callback listener. 4254 // Add it to newNetwork regardless of score. 4255 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4256 continue; 4257 } 4258 4259 // next check if it's better than any current network we're using for 4260 // this request 4261 if (VDBG) { 4262 log("currentScore = " + 4263 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4264 ", newScore = " + newNetwork.getCurrentScore()); 4265 } 4266 if (currentNetwork == null || 4267 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4268 if (currentNetwork != null) { 4269 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4270 currentNetwork.networkRequests.remove(nri.request.requestId); 4271 currentNetwork.networkLingered.add(nri.request); 4272 affectedNetworks.add(currentNetwork); 4273 } else { 4274 if (DBG) log(" accepting network in place of null"); 4275 } 4276 unlinger(newNetwork); 4277 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4278 if (!newNetwork.addRequest(nri.request)) { 4279 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4280 } 4281 addedRequests.add(nri); 4282 keep = true; 4283 // Tell NetworkFactories about the new score, so they can stop 4284 // trying to connect if they know they cannot match it. 4285 // TODO - this could get expensive if we have alot of requests for this 4286 // network. Think about if there is a way to reduce this. Push 4287 // netid->request mapping to each factory? 4288 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4289 if (mDefaultRequest.requestId == nri.request.requestId) { 4290 isNewDefault = true; 4291 oldDefaultNetwork = currentNetwork; 4292 } 4293 } 4294 } 4295 } 4296 // Linger any networks that are no longer needed. 4297 for (NetworkAgentInfo nai : affectedNetworks) { 4298 if (nai.lingering) { 4299 // Already lingered. Nothing to do. This can only happen if "nai" is in 4300 // "affectedNetworks" twice. The reasoning being that to get added to 4301 // "affectedNetworks", "nai" must have been satisfying a NetworkRequest 4302 // (i.e. not lingered) so it could have only been lingered by this loop. 4303 // unneeded(nai) will be false and we'll call unlinger() below which would 4304 // be bad, so handle it here. 4305 } else if (unneeded(nai)) { 4306 linger(nai); 4307 } else { 4308 // Clear nai.networkLingered we might have added above. 4309 unlinger(nai); 4310 } 4311 } 4312 if (keep) { 4313 if (isNewDefault) { 4314 // Notify system services that this network is up. 4315 makeDefault(newNetwork); 4316 synchronized (ConnectivityService.this) { 4317 // have a new default network, release the transition wakelock in 4318 // a second if it's held. The second pause is to allow apps 4319 // to reconnect over the new network 4320 if (mNetTransitionWakeLock.isHeld()) { 4321 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4322 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4323 mNetTransitionWakeLockSerialNumber, 0), 4324 1000); 4325 } 4326 } 4327 } 4328 4329 // do this after the default net is switched, but 4330 // before LegacyTypeTracker sends legacy broadcasts 4331 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4332 4333 if (isNewDefault) { 4334 // Maintain the illusion: since the legacy API only 4335 // understands one network at a time, we must pretend 4336 // that the current default network disconnected before 4337 // the new one connected. 4338 if (oldDefaultNetwork != null) { 4339 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4340 oldDefaultNetwork, true); 4341 } 4342 mDefaultInetConditionPublished = newNetwork.lastValidated ? 100 : 0; 4343 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4344 notifyLockdownVpn(newNetwork); 4345 } 4346 4347 // Notify battery stats service about this network, both the normal 4348 // interface and any stacked links. 4349 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4350 try { 4351 final IBatteryStats bs = BatteryStatsService.getService(); 4352 final int type = newNetwork.networkInfo.getType(); 4353 4354 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4355 bs.noteNetworkInterfaceType(baseIface, type); 4356 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4357 final String stackedIface = stacked.getInterfaceName(); 4358 bs.noteNetworkInterfaceType(stackedIface, type); 4359 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4360 } 4361 } catch (RemoteException ignored) { 4362 } 4363 4364 // This has to happen after the notifyNetworkCallbacks as that tickles each 4365 // ConnectivityManager instance so that legacy requests correctly bind dns 4366 // requests to this network. The legacy users are listening for this bcast 4367 // and will generally do a dns request so they can ensureRouteToHost and if 4368 // they do that before the callbacks happen they'll use the default network. 4369 // 4370 // TODO: Is there still a race here? We send the broadcast 4371 // after sending the callback, but if the app can receive the 4372 // broadcast before the callback, it might still break. 4373 // 4374 // This *does* introduce a race where if the user uses the new api 4375 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4376 // they may get old info. Reverse this after the old startUsing api is removed. 4377 // This is on top of the multiple intent sequencing referenced in the todo above. 4378 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4379 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4380 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4381 // legacy type tracker filters out repeat adds 4382 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4383 } 4384 } 4385 4386 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4387 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4388 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4389 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4390 if (newNetwork.isVPN()) { 4391 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4392 } 4393 } 4394 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4395 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4396 if (unneeded(nai)) { 4397 if (DBG) log("Reaping " + nai.name()); 4398 teardownUnneededNetwork(nai); 4399 } 4400 } 4401 } 4402 } 4403 4404 /** 4405 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4406 * being disconnected. 4407 * @param changed If only one Network's score or capabilities have been modified since the last 4408 * time this function was called, pass this Network in this argument, otherwise pass 4409 * null. 4410 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4411 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4412 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4413 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4414 * network's score. 4415 */ 4416 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4417 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4418 // to avoid the slowness. It is not simply enough to process just "changed", for 4419 // example in the case where "changed"'s score decreases and another network should begin 4420 // satifying a NetworkRequest that "changed" currently satisfies. 4421 4422 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4423 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4424 // rematchNetworkAndRequests() handles. 4425 if (changed != null && oldScore < changed.getCurrentScore()) { 4426 rematchNetworkAndRequests(changed, ReapUnvalidatedNetworks.REAP); 4427 } else { 4428 final NetworkAgentInfo[] nais = mNetworkAgentInfos.values().toArray( 4429 new NetworkAgentInfo[mNetworkAgentInfos.size()]); 4430 // Rematch higher scoring networks first to prevent requests first matching a lower 4431 // scoring network and then a higher scoring network, which could produce multiple 4432 // callbacks and inadvertently unlinger networks. 4433 Arrays.sort(nais); 4434 for (NetworkAgentInfo nai : nais) { 4435 rematchNetworkAndRequests(nai, 4436 // Only reap the last time through the loop. Reaping before all rematching 4437 // is complete could incorrectly teardown a network that hasn't yet been 4438 // rematched. 4439 (nai != nais[nais.length-1]) ? ReapUnvalidatedNetworks.DONT_REAP 4440 : ReapUnvalidatedNetworks.REAP); 4441 } 4442 } 4443 } 4444 4445 private void updateInetCondition(NetworkAgentInfo nai) { 4446 // Don't bother updating until we've graduated to validated at least once. 4447 if (!nai.everValidated) return; 4448 // For now only update icons for default connection. 4449 // TODO: Update WiFi and cellular icons separately. b/17237507 4450 if (!isDefaultNetwork(nai)) return; 4451 4452 int newInetCondition = nai.lastValidated ? 100 : 0; 4453 // Don't repeat publish. 4454 if (newInetCondition == mDefaultInetConditionPublished) return; 4455 4456 mDefaultInetConditionPublished = newInetCondition; 4457 sendInetConditionBroadcast(nai.networkInfo); 4458 } 4459 4460 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4461 if (mLockdownTracker != null) { 4462 if (nai != null && nai.isVPN()) { 4463 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4464 } else { 4465 mLockdownTracker.onNetworkInfoChanged(); 4466 } 4467 } 4468 } 4469 4470 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4471 NetworkInfo.State state = newInfo.getState(); 4472 NetworkInfo oldInfo = null; 4473 final int oldScore = networkAgent.getCurrentScore(); 4474 synchronized (networkAgent) { 4475 oldInfo = networkAgent.networkInfo; 4476 networkAgent.networkInfo = newInfo; 4477 } 4478 notifyLockdownVpn(networkAgent); 4479 4480 if (oldInfo != null && oldInfo.getState() == state) { 4481 if (VDBG) log("ignoring duplicate network state non-change"); 4482 return; 4483 } 4484 if (DBG) { 4485 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4486 (oldInfo == null ? "null" : oldInfo.getState()) + 4487 " to " + state); 4488 } 4489 4490 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4491 try { 4492 // This should never fail. Specifying an already in use NetID will cause failure. 4493 if (networkAgent.isVPN()) { 4494 mNetd.createVirtualNetwork(networkAgent.network.netId, 4495 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4496 (networkAgent.networkMisc == null || 4497 !networkAgent.networkMisc.allowBypass)); 4498 } else { 4499 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4500 } 4501 } catch (Exception e) { 4502 loge("Error creating network " + networkAgent.network.netId + ": " 4503 + e.getMessage()); 4504 return; 4505 } 4506 networkAgent.created = true; 4507 updateLinkProperties(networkAgent, null); 4508 notifyIfacesChanged(); 4509 4510 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4511 scheduleUnvalidatedPrompt(networkAgent); 4512 4513 if (networkAgent.isVPN()) { 4514 // Temporarily disable the default proxy (not global). 4515 synchronized (mProxyLock) { 4516 if (!mDefaultProxyDisabled) { 4517 mDefaultProxyDisabled = true; 4518 if (mGlobalProxy == null && mDefaultProxy != null) { 4519 sendProxyBroadcast(null); 4520 } 4521 } 4522 } 4523 // TODO: support proxy per network. 4524 } 4525 4526 // Consider network even though it is not yet validated. 4527 rematchNetworkAndRequests(networkAgent, ReapUnvalidatedNetworks.REAP); 4528 4529 // This has to happen after matching the requests, because callbacks are just requests. 4530 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4531 } else if (state == NetworkInfo.State.DISCONNECTED) { 4532 networkAgent.asyncChannel.disconnect(); 4533 if (networkAgent.isVPN()) { 4534 synchronized (mProxyLock) { 4535 if (mDefaultProxyDisabled) { 4536 mDefaultProxyDisabled = false; 4537 if (mGlobalProxy == null && mDefaultProxy != null) { 4538 sendProxyBroadcast(mDefaultProxy); 4539 } 4540 } 4541 } 4542 } 4543 } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) || 4544 state == NetworkInfo.State.SUSPENDED) { 4545 // going into or coming out of SUSPEND: rescore and notify 4546 if (networkAgent.getCurrentScore() != oldScore) { 4547 rematchAllNetworksAndRequests(networkAgent, oldScore); 4548 } 4549 notifyNetworkCallbacks(networkAgent, (state == NetworkInfo.State.SUSPENDED ? 4550 ConnectivityManager.CALLBACK_SUSPENDED : 4551 ConnectivityManager.CALLBACK_RESUMED)); 4552 mLegacyTypeTracker.update(networkAgent); 4553 } 4554 } 4555 4556 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4557 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4558 if (score < 0) { 4559 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4560 "). Bumping score to min of 0"); 4561 score = 0; 4562 } 4563 4564 final int oldScore = nai.getCurrentScore(); 4565 nai.setCurrentScore(score); 4566 4567 rematchAllNetworksAndRequests(nai, oldScore); 4568 4569 sendUpdatedScoreToFactories(nai); 4570 } 4571 4572 // notify only this one new request of the current state 4573 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4574 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4575 // TODO - read state from monitor to decide what to send. 4576// if (nai.networkMonitor.isLingering()) { 4577// notifyType = NetworkCallbacks.LOSING; 4578// } else if (nai.networkMonitor.isEvaluating()) { 4579// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4580// } 4581 if (nri.mPendingIntent == null) { 4582 callCallbackForRequest(nri, nai, notifyType); 4583 } else { 4584 sendPendingIntentForRequest(nri, nai, notifyType); 4585 } 4586 } 4587 4588 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, DetailedState state, int type) { 4589 // The NetworkInfo we actually send out has no bearing on the real 4590 // state of affairs. For example, if the default connection is mobile, 4591 // and a request for HIPRI has just gone away, we need to pretend that 4592 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4593 // the state to DISCONNECTED, even though the network is of type MOBILE 4594 // and is still connected. 4595 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4596 info.setType(type); 4597 if (state != DetailedState.DISCONNECTED) { 4598 info.setDetailedState(state, null, info.getExtraInfo()); 4599 sendConnectedBroadcast(info); 4600 } else { 4601 info.setDetailedState(state, info.getReason(), info.getExtraInfo()); 4602 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4603 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4604 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4605 if (info.isFailover()) { 4606 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4607 nai.networkInfo.setFailover(false); 4608 } 4609 if (info.getReason() != null) { 4610 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4611 } 4612 if (info.getExtraInfo() != null) { 4613 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4614 } 4615 NetworkAgentInfo newDefaultAgent = null; 4616 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4617 newDefaultAgent = getDefaultNetwork(); 4618 if (newDefaultAgent != null) { 4619 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4620 newDefaultAgent.networkInfo); 4621 } else { 4622 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4623 } 4624 } 4625 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4626 mDefaultInetConditionPublished); 4627 sendStickyBroadcast(intent); 4628 if (newDefaultAgent != null) { 4629 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4630 } 4631 } 4632 } 4633 4634 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4635 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4636 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4637 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4638 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4639 if (VDBG) log(" sending notification for " + nr); 4640 if (nri.mPendingIntent == null) { 4641 callCallbackForRequest(nri, networkAgent, notifyType); 4642 } else { 4643 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4644 } 4645 } 4646 } 4647 4648 private String notifyTypeToName(int notifyType) { 4649 switch (notifyType) { 4650 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4651 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4652 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4653 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4654 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4655 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4656 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4657 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4658 } 4659 return "UNKNOWN"; 4660 } 4661 4662 /** 4663 * Notify other system services that set of active ifaces has changed. 4664 */ 4665 private void notifyIfacesChanged() { 4666 try { 4667 mStatsService.forceUpdateIfaces(); 4668 } catch (Exception ignored) { 4669 } 4670 } 4671 4672 @Override 4673 public boolean addVpnAddress(String address, int prefixLength) { 4674 throwIfLockdownEnabled(); 4675 int user = UserHandle.getUserId(Binder.getCallingUid()); 4676 synchronized (mVpns) { 4677 return mVpns.get(user).addAddress(address, prefixLength); 4678 } 4679 } 4680 4681 @Override 4682 public boolean removeVpnAddress(String address, int prefixLength) { 4683 throwIfLockdownEnabled(); 4684 int user = UserHandle.getUserId(Binder.getCallingUid()); 4685 synchronized (mVpns) { 4686 return mVpns.get(user).removeAddress(address, prefixLength); 4687 } 4688 } 4689 4690 @Override 4691 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4692 throwIfLockdownEnabled(); 4693 int user = UserHandle.getUserId(Binder.getCallingUid()); 4694 boolean success; 4695 synchronized (mVpns) { 4696 success = mVpns.get(user).setUnderlyingNetworks(networks); 4697 } 4698 if (success) { 4699 notifyIfacesChanged(); 4700 } 4701 return success; 4702 } 4703 4704 @Override 4705 public void startNattKeepalive(Network network, int intervalSeconds, Messenger messenger, 4706 IBinder binder, String srcAddr, int srcPort, String dstAddr) { 4707 enforceKeepalivePermission(); 4708 mKeepaliveTracker.startNattKeepalive( 4709 getNetworkAgentInfoForNetwork(network), 4710 intervalSeconds, messenger, binder, 4711 srcAddr, srcPort, dstAddr, ConnectivityManager.PacketKeepalive.NATT_PORT); 4712 } 4713 4714 @Override 4715 public void stopKeepalive(Network network, int slot) { 4716 mHandler.sendMessage(mHandler.obtainMessage( 4717 NetworkAgent.CMD_STOP_PACKET_KEEPALIVE, slot, PacketKeepalive.SUCCESS, network)); 4718 } 4719 4720 @Override 4721 public void factoryReset() { 4722 enforceConnectivityInternalPermission(); 4723 4724 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 4725 return; 4726 } 4727 4728 final int userId = UserHandle.getCallingUserId(); 4729 4730 // Turn airplane mode off 4731 setAirplaneMode(false); 4732 4733 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 4734 // Untether 4735 for (String tether : getTetheredIfaces()) { 4736 untether(tether); 4737 } 4738 } 4739 4740 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 4741 // Turn VPN off 4742 VpnConfig vpnConfig = getVpnConfig(userId); 4743 if (vpnConfig != null) { 4744 if (vpnConfig.legacy) { 4745 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 4746 } else { 4747 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 4748 // in the future without user intervention. 4749 setVpnPackageAuthorization(vpnConfig.user, userId, false); 4750 4751 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 4752 } 4753 } 4754 } 4755 } 4756} 4757