ConnectivityService.java revision 26ab6ed3efd9bc55e342caabade46d00f8304240
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server; 18 19import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE; 20import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; 21import static android.net.ConnectivityManager.NETID_UNSET; 22import static android.net.ConnectivityManager.TYPE_NONE; 23import static android.net.ConnectivityManager.TYPE_VPN; 24import static android.net.ConnectivityManager.getNetworkTypeName; 25import static android.net.ConnectivityManager.isNetworkTypeValid; 26import static android.net.NetworkCapabilities.NET_CAPABILITY_CAPTIVE_PORTAL; 27import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET; 28import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED; 29import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED; 30import static android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED; 31import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 32import static android.net.NetworkPolicyManager.RULE_REJECT_ALL; 33import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 34 35import android.annotation.Nullable; 36import android.app.AlarmManager; 37import android.app.Notification; 38import android.app.NotificationManager; 39import android.app.PendingIntent; 40import android.content.BroadcastReceiver; 41import android.content.ContentResolver; 42import android.content.Context; 43import android.content.Intent; 44import android.content.IntentFilter; 45import android.content.pm.PackageManager; 46import android.content.res.Configuration; 47import android.content.res.Resources; 48import android.database.ContentObserver; 49import android.net.ConnectivityManager; 50import android.net.ConnectivityManager.PacketKeepalive; 51import android.net.IConnectivityManager; 52import android.net.INetworkManagementEventObserver; 53import android.net.INetworkPolicyListener; 54import android.net.INetworkPolicyManager; 55import android.net.INetworkStatsService; 56import android.net.LinkProperties; 57import android.net.LinkProperties.CompareResult; 58import android.net.Network; 59import android.net.NetworkAgent; 60import android.net.NetworkCapabilities; 61import android.net.NetworkConfig; 62import android.net.NetworkInfo; 63import android.net.NetworkInfo.DetailedState; 64import android.net.NetworkMisc; 65import android.net.NetworkQuotaInfo; 66import android.net.NetworkRequest; 67import android.net.NetworkState; 68import android.net.NetworkUtils; 69import android.net.Proxy; 70import android.net.ProxyInfo; 71import android.net.RouteInfo; 72import android.net.UidRange; 73import android.net.Uri; 74import android.os.Binder; 75import android.os.Bundle; 76import android.os.FileUtils; 77import android.os.Handler; 78import android.os.HandlerThread; 79import android.os.IBinder; 80import android.os.INetworkManagementService; 81import android.os.Looper; 82import android.os.Message; 83import android.os.Messenger; 84import android.os.ParcelFileDescriptor; 85import android.os.PowerManager; 86import android.os.Process; 87import android.os.RemoteException; 88import android.os.SystemClock; 89import android.os.SystemProperties; 90import android.os.UserHandle; 91import android.os.UserManager; 92import android.provider.Settings; 93import android.security.Credentials; 94import android.security.KeyStore; 95import android.telephony.TelephonyManager; 96import android.text.TextUtils; 97import android.util.LocalLog; 98import android.util.LocalLog.ReadOnlyLocalLog; 99import android.util.Pair; 100import android.util.Slog; 101import android.util.SparseArray; 102import android.util.SparseBooleanArray; 103import android.util.SparseIntArray; 104import android.util.Xml; 105 106import com.android.internal.R; 107import com.android.internal.annotations.GuardedBy; 108import com.android.internal.annotations.VisibleForTesting; 109import com.android.internal.app.IBatteryStats; 110import com.android.internal.net.LegacyVpnInfo; 111import com.android.internal.net.NetworkStatsFactory; 112import com.android.internal.net.VpnConfig; 113import com.android.internal.net.VpnInfo; 114import com.android.internal.net.VpnProfile; 115import com.android.internal.telephony.DctConstants; 116import com.android.internal.util.AsyncChannel; 117import com.android.internal.util.IndentingPrintWriter; 118import com.android.internal.util.XmlUtils; 119import com.android.server.am.BatteryStatsService; 120import com.android.server.connectivity.DataConnectionStats; 121import com.android.server.connectivity.KeepaliveTracker; 122import com.android.server.connectivity.NetworkDiagnostics; 123import com.android.server.connectivity.Nat464Xlat; 124import com.android.server.connectivity.NetworkAgentInfo; 125import com.android.server.connectivity.NetworkMonitor; 126import com.android.server.connectivity.PacManager; 127import com.android.server.connectivity.PermissionMonitor; 128import com.android.server.connectivity.Tethering; 129import com.android.server.connectivity.Vpn; 130import com.android.server.net.BaseNetworkObserver; 131import com.android.server.net.LockdownVpnTracker; 132import com.google.android.collect.Lists; 133import com.google.android.collect.Sets; 134 135import org.xmlpull.v1.XmlPullParser; 136import org.xmlpull.v1.XmlPullParserException; 137 138import java.io.File; 139import java.io.FileDescriptor; 140import java.io.FileNotFoundException; 141import java.io.FileReader; 142import java.io.IOException; 143import java.io.PrintWriter; 144import java.net.Inet4Address; 145import java.net.InetAddress; 146import java.net.UnknownHostException; 147import java.util.ArrayDeque; 148import java.util.ArrayList; 149import java.util.Arrays; 150import java.util.Collection; 151import java.util.HashMap; 152import java.util.HashSet; 153import java.util.SortedSet; 154import java.util.TreeSet; 155import java.util.Iterator; 156import java.util.List; 157import java.util.Map; 158import java.util.Objects; 159import java.util.concurrent.atomic.AtomicInteger; 160 161/** 162 * @hide 163 */ 164public class ConnectivityService extends IConnectivityManager.Stub 165 implements PendingIntent.OnFinished { 166 private static final String TAG = "ConnectivityService"; 167 168 private static final boolean DBG = true; 169 private static final boolean VDBG = false; 170 171 private static final boolean LOGD_RULES = false; 172 173 // TODO: create better separation between radio types and network types 174 175 // how long to wait before switching back to a radio's default network 176 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 177 // system property that can override the above value 178 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 179 "android.telephony.apn-restore"; 180 181 // How long to wait before putting up a "This network doesn't have an Internet connection, 182 // connect anyway?" dialog after the user selects a network that doesn't validate. 183 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 184 185 // How long to delay to removal of a pending intent based request. 186 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 187 private final int mReleasePendingIntentDelayMs; 188 189 private Tethering mTethering; 190 191 private final PermissionMonitor mPermissionMonitor; 192 193 private KeyStore mKeyStore; 194 195 @GuardedBy("mVpns") 196 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 197 198 private boolean mLockdownEnabled; 199 private LockdownVpnTracker mLockdownTracker; 200 201 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 202 private Object mRulesLock = new Object(); 203 /** Currently active network rules by UID. */ 204 private SparseIntArray mUidRules = new SparseIntArray(); 205 /** Set of ifaces that are costly. */ 206 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 207 208 final private Context mContext; 209 private int mNetworkPreference; 210 // 0 is full bad, 100 is full good 211 private int mDefaultInetConditionPublished = 0; 212 213 private int mNumDnsEntries; 214 215 private boolean mTestMode; 216 private static ConnectivityService sServiceInstance; 217 218 private INetworkManagementService mNetd; 219 private INetworkStatsService mStatsService; 220 private INetworkPolicyManager mPolicyManager; 221 222 private String mCurrentTcpBufferSizes; 223 224 private static final int ENABLED = 1; 225 private static final int DISABLED = 0; 226 227 private enum ReapUnvalidatedNetworks { 228 // Tear down networks that have no chance (e.g. even if validated) of becoming 229 // the highest scoring network satisfying a NetworkRequest. This should be passed when 230 // all networks have been rematched against all NetworkRequests. 231 REAP, 232 // Don't reap networks. This should be passed when some networks have not yet been 233 // rematched against all NetworkRequests. 234 DONT_REAP 235 }; 236 237 /** 238 * used internally to change our mobile data enabled flag 239 */ 240 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 241 242 /** 243 * used internally to clear a wakelock when transitioning 244 * from one net to another. Clear happens when we get a new 245 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 246 * after a timeout if no network is found (typically 1 min). 247 */ 248 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 249 250 /** 251 * used internally to reload global proxy settings 252 */ 253 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 254 255 /** 256 * used internally to send a sticky broadcast delayed. 257 */ 258 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 259 260 /** 261 * PAC manager has received new port. 262 */ 263 private static final int EVENT_PROXY_HAS_CHANGED = 16; 264 265 /** 266 * used internally when registering NetworkFactories 267 * obj = NetworkFactoryInfo 268 */ 269 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 270 271 /** 272 * used internally when registering NetworkAgents 273 * obj = Messenger 274 */ 275 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 276 277 /** 278 * used to add a network request 279 * includes a NetworkRequestInfo 280 */ 281 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 282 283 /** 284 * indicates a timeout period is over - check if we had a network yet or not 285 * and if not, call the timeout calback (but leave the request live until they 286 * cancel it. 287 * includes a NetworkRequestInfo 288 */ 289 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 290 291 /** 292 * used to add a network listener - no request 293 * includes a NetworkRequestInfo 294 */ 295 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 296 297 /** 298 * used to remove a network request, either a listener or a real request 299 * arg1 = UID of caller 300 * obj = NetworkRequest 301 */ 302 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 303 304 /** 305 * used internally when registering NetworkFactories 306 * obj = Messenger 307 */ 308 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 309 310 /** 311 * used internally to expire a wakelock when transitioning 312 * from one net to another. Expire happens when we fail to find 313 * a new network (typically after 1 minute) - 314 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 315 * a replacement network. 316 */ 317 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 318 319 /** 320 * Used internally to indicate the system is ready. 321 */ 322 private static final int EVENT_SYSTEM_READY = 25; 323 324 /** 325 * used to add a network request with a pending intent 326 * obj = NetworkRequestInfo 327 */ 328 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 329 330 /** 331 * used to remove a pending intent and its associated network request. 332 * arg1 = UID of caller 333 * obj = PendingIntent 334 */ 335 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 336 337 /** 338 * used to specify whether a network should be used even if unvalidated. 339 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 340 * arg2 = whether to remember this choice in the future (1 or 0) 341 * obj = network 342 */ 343 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 344 345 /** 346 * used to ask the user to confirm a connection to an unvalidated network. 347 * obj = network 348 */ 349 private static final int EVENT_PROMPT_UNVALIDATED = 29; 350 351 /** 352 * used internally to (re)configure mobile data always-on settings. 353 */ 354 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 355 356 /** 357 * used to add a network listener with a pending intent 358 * obj = NetworkRequestInfo 359 */ 360 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 361 362 /** Handler used for internal events. */ 363 final private InternalHandler mHandler; 364 /** Handler used for incoming {@link NetworkStateTracker} events. */ 365 final private NetworkStateTrackerHandler mTrackerHandler; 366 367 private boolean mSystemReady; 368 private Intent mInitialBroadcast; 369 370 private PowerManager.WakeLock mNetTransitionWakeLock; 371 private String mNetTransitionWakeLockCausedBy = ""; 372 private int mNetTransitionWakeLockSerialNumber; 373 private int mNetTransitionWakeLockTimeout; 374 private final PowerManager.WakeLock mPendingIntentWakeLock; 375 376 private InetAddress mDefaultDns; 377 378 // used in DBG mode to track inet condition reports 379 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 380 private ArrayList mInetLog; 381 382 // track the current default http proxy - tell the world if we get a new one (real change) 383 private volatile ProxyInfo mDefaultProxy = null; 384 private Object mProxyLock = new Object(); 385 private boolean mDefaultProxyDisabled = false; 386 387 // track the global proxy. 388 private ProxyInfo mGlobalProxy = null; 389 390 private PacManager mPacManager = null; 391 392 final private SettingsObserver mSettingsObserver; 393 394 private UserManager mUserManager; 395 396 NetworkConfig[] mNetConfigs; 397 int mNetworksDefined; 398 399 // the set of network types that can only be enabled by system/sig apps 400 List mProtectedNetworks; 401 402 private DataConnectionStats mDataConnectionStats; 403 404 TelephonyManager mTelephonyManager; 405 406 private KeepaliveTracker mKeepaliveTracker; 407 408 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 409 private final static int MIN_NET_ID = 100; // some reserved marks 410 private final static int MAX_NET_ID = 65535; 411 private int mNextNetId = MIN_NET_ID; 412 413 // sequence number of NetworkRequests 414 private int mNextNetworkRequestId = 1; 415 416 // NetworkRequest activity String log entries. 417 private static final int MAX_NETWORK_REQUEST_LOGS = 20; 418 private final LocalLog mNetworkRequestInfoLogs = new LocalLog(MAX_NETWORK_REQUEST_LOGS); 419 420 // Array of <Network,ReadOnlyLocalLogs> tracking network validation and results 421 private static final int MAX_VALIDATION_LOGS = 10; 422 private final ArrayDeque<Pair<Network,ReadOnlyLocalLog>> mValidationLogs = 423 new ArrayDeque<Pair<Network,ReadOnlyLocalLog>>(MAX_VALIDATION_LOGS); 424 425 private void addValidationLogs(ReadOnlyLocalLog log, Network network) { 426 synchronized(mValidationLogs) { 427 while (mValidationLogs.size() >= MAX_VALIDATION_LOGS) { 428 mValidationLogs.removeLast(); 429 } 430 mValidationLogs.addFirst(new Pair(network, log)); 431 } 432 } 433 434 /** 435 * Implements support for the legacy "one network per network type" model. 436 * 437 * We used to have a static array of NetworkStateTrackers, one for each 438 * network type, but that doesn't work any more now that we can have, 439 * for example, more that one wifi network. This class stores all the 440 * NetworkAgentInfo objects that support a given type, but the legacy 441 * API will only see the first one. 442 * 443 * It serves two main purposes: 444 * 445 * 1. Provide information about "the network for a given type" (since this 446 * API only supports one). 447 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 448 * the first network for a given type changes, or if the default network 449 * changes. 450 */ 451 private class LegacyTypeTracker { 452 453 private static final boolean DBG = true; 454 private static final boolean VDBG = false; 455 private static final String TAG = "CSLegacyTypeTracker"; 456 457 /** 458 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 459 * Each list holds references to all NetworkAgentInfos that are used to 460 * satisfy requests for that network type. 461 * 462 * This array is built out at startup such that an unsupported network 463 * doesn't get an ArrayList instance, making this a tristate: 464 * unsupported, supported but not active and active. 465 * 466 * The actual lists are populated when we scan the network types that 467 * are supported on this device. 468 */ 469 private ArrayList<NetworkAgentInfo> mTypeLists[]; 470 471 public LegacyTypeTracker() { 472 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 473 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 474 } 475 476 public void addSupportedType(int type) { 477 if (mTypeLists[type] != null) { 478 throw new IllegalStateException( 479 "legacy list for type " + type + "already initialized"); 480 } 481 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 482 } 483 484 public boolean isTypeSupported(int type) { 485 return isNetworkTypeValid(type) && mTypeLists[type] != null; 486 } 487 488 public NetworkAgentInfo getNetworkForType(int type) { 489 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 490 return mTypeLists[type].get(0); 491 } else { 492 return null; 493 } 494 } 495 496 private void maybeLogBroadcast(NetworkAgentInfo nai, DetailedState state, int type, 497 boolean isDefaultNetwork) { 498 if (DBG) { 499 log("Sending " + state + 500 " broadcast for type " + type + " " + nai.name() + 501 " isDefaultNetwork=" + isDefaultNetwork); 502 } 503 } 504 505 /** Adds the given network to the specified legacy type list. */ 506 public void add(int type, NetworkAgentInfo nai) { 507 if (!isTypeSupported(type)) { 508 return; // Invalid network type. 509 } 510 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 511 512 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 513 if (list.contains(nai)) { 514 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 515 return; 516 } 517 518 list.add(nai); 519 520 // Send a broadcast if this is the first network of its type or if it's the default. 521 final boolean isDefaultNetwork = isDefaultNetwork(nai); 522 if (list.size() == 1 || isDefaultNetwork) { 523 maybeLogBroadcast(nai, DetailedState.CONNECTED, type, isDefaultNetwork); 524 sendLegacyNetworkBroadcast(nai, DetailedState.CONNECTED, type); 525 } 526 } 527 528 /** Removes the given network from the specified legacy type list. */ 529 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 530 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 531 if (list == null || list.isEmpty()) { 532 return; 533 } 534 535 final boolean wasFirstNetwork = list.get(0).equals(nai); 536 537 if (!list.remove(nai)) { 538 return; 539 } 540 541 final DetailedState state = DetailedState.DISCONNECTED; 542 543 if (wasFirstNetwork || wasDefault) { 544 maybeLogBroadcast(nai, state, type, wasDefault); 545 sendLegacyNetworkBroadcast(nai, state, type); 546 } 547 548 if (!list.isEmpty() && wasFirstNetwork) { 549 if (DBG) log("Other network available for type " + type + 550 ", sending connected broadcast"); 551 final NetworkAgentInfo replacement = list.get(0); 552 maybeLogBroadcast(replacement, state, type, isDefaultNetwork(replacement)); 553 sendLegacyNetworkBroadcast(replacement, state, type); 554 } 555 } 556 557 /** Removes the given network from all legacy type lists. */ 558 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 559 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 560 for (int type = 0; type < mTypeLists.length; type++) { 561 remove(type, nai, wasDefault); 562 } 563 } 564 565 // send out another legacy broadcast - currently only used for suspend/unsuspend 566 // toggle 567 public void update(NetworkAgentInfo nai) { 568 final boolean isDefault = isDefaultNetwork(nai); 569 final DetailedState state = nai.networkInfo.getDetailedState(); 570 for (int type = 0; type < mTypeLists.length; type++) { 571 final ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 572 final boolean contains = (list != null && list.contains(nai)); 573 final boolean isFirst = (list != null && list.size() > 0 && nai == list.get(0)); 574 if (isFirst || (contains && isDefault)) { 575 maybeLogBroadcast(nai, state, type, isDefault); 576 sendLegacyNetworkBroadcast(nai, state, type); 577 } 578 } 579 } 580 581 private String naiToString(NetworkAgentInfo nai) { 582 String name = (nai != null) ? nai.name() : "null"; 583 String state = (nai.networkInfo != null) ? 584 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 585 "???/???"; 586 return name + " " + state; 587 } 588 589 public void dump(IndentingPrintWriter pw) { 590 pw.println("mLegacyTypeTracker:"); 591 pw.increaseIndent(); 592 pw.print("Supported types:"); 593 for (int type = 0; type < mTypeLists.length; type++) { 594 if (mTypeLists[type] != null) pw.print(" " + type); 595 } 596 pw.println(); 597 pw.println("Current state:"); 598 pw.increaseIndent(); 599 for (int type = 0; type < mTypeLists.length; type++) { 600 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 601 for (NetworkAgentInfo nai : mTypeLists[type]) { 602 pw.println(type + " " + naiToString(nai)); 603 } 604 } 605 pw.decreaseIndent(); 606 pw.decreaseIndent(); 607 pw.println(); 608 } 609 610 // This class needs its own log method because it has a different TAG. 611 private void log(String s) { 612 Slog.d(TAG, s); 613 } 614 615 } 616 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 617 618 public ConnectivityService(Context context, INetworkManagementService netManager, 619 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 620 if (DBG) log("ConnectivityService starting up"); 621 622 mDefaultRequest = createInternetRequestForTransport(-1); 623 NetworkRequestInfo defaultNRI = new NetworkRequestInfo(null, mDefaultRequest, 624 new Binder(), NetworkRequestInfo.REQUEST); 625 mNetworkRequests.put(mDefaultRequest, defaultNRI); 626 mNetworkRequestInfoLogs.log("REGISTER " + defaultNRI); 627 628 mDefaultMobileDataRequest = createInternetRequestForTransport( 629 NetworkCapabilities.TRANSPORT_CELLULAR); 630 631 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 632 handlerThread.start(); 633 mHandler = new InternalHandler(handlerThread.getLooper()); 634 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 635 636 // setup our unique device name 637 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 638 String id = Settings.Secure.getString(context.getContentResolver(), 639 Settings.Secure.ANDROID_ID); 640 if (id != null && id.length() > 0) { 641 String name = new String("android-").concat(id); 642 SystemProperties.set("net.hostname", name); 643 } 644 } 645 646 // read our default dns server ip 647 String dns = Settings.Global.getString(context.getContentResolver(), 648 Settings.Global.DEFAULT_DNS_SERVER); 649 if (dns == null || dns.length() == 0) { 650 dns = context.getResources().getString( 651 com.android.internal.R.string.config_default_dns_server); 652 } 653 try { 654 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 655 } catch (IllegalArgumentException e) { 656 loge("Error setting defaultDns using " + dns); 657 } 658 659 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 660 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 661 662 mContext = checkNotNull(context, "missing Context"); 663 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 664 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 665 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 666 mKeyStore = KeyStore.getInstance(); 667 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 668 669 try { 670 mPolicyManager.registerListener(mPolicyListener); 671 } catch (RemoteException e) { 672 // ouch, no rules updates means some processes may never get network 673 loge("unable to register INetworkPolicyListener" + e.toString()); 674 } 675 676 final PowerManager powerManager = (PowerManager) context.getSystemService( 677 Context.POWER_SERVICE); 678 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 679 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 680 com.android.internal.R.integer.config_networkTransitionTimeout); 681 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 682 683 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 684 685 // TODO: What is the "correct" way to do determine if this is a wifi only device? 686 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 687 log("wifiOnly=" + wifiOnly); 688 String[] naStrings = context.getResources().getStringArray( 689 com.android.internal.R.array.networkAttributes); 690 for (String naString : naStrings) { 691 try { 692 NetworkConfig n = new NetworkConfig(naString); 693 if (VDBG) log("naString=" + naString + " config=" + n); 694 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 695 loge("Error in networkAttributes - ignoring attempt to define type " + 696 n.type); 697 continue; 698 } 699 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 700 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 701 n.type); 702 continue; 703 } 704 if (mNetConfigs[n.type] != null) { 705 loge("Error in networkAttributes - ignoring attempt to redefine type " + 706 n.type); 707 continue; 708 } 709 mLegacyTypeTracker.addSupportedType(n.type); 710 711 mNetConfigs[n.type] = n; 712 mNetworksDefined++; 713 } catch(Exception e) { 714 // ignore it - leave the entry null 715 } 716 } 717 718 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 719 if (mNetConfigs[TYPE_VPN] == null) { 720 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 721 // don't need to add TYPE_VPN to mNetConfigs. 722 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 723 mNetworksDefined++; // used only in the log() statement below. 724 } 725 726 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 727 728 mProtectedNetworks = new ArrayList<Integer>(); 729 int[] protectedNetworks = context.getResources().getIntArray( 730 com.android.internal.R.array.config_protectedNetworks); 731 for (int p : protectedNetworks) { 732 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 733 mProtectedNetworks.add(p); 734 } else { 735 if (DBG) loge("Ignoring protectedNetwork " + p); 736 } 737 } 738 739 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 740 && SystemProperties.get("ro.build.type").equals("eng"); 741 742 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 743 744 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 745 746 //set up the listener for user state for creating user VPNs 747 IntentFilter intentFilter = new IntentFilter(); 748 intentFilter.addAction(Intent.ACTION_USER_STARTING); 749 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 750 mContext.registerReceiverAsUser( 751 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 752 753 try { 754 mNetd.registerObserver(mTethering); 755 mNetd.registerObserver(mDataActivityObserver); 756 } catch (RemoteException e) { 757 loge("Error registering observer :" + e); 758 } 759 760 if (DBG) { 761 mInetLog = new ArrayList(); 762 } 763 764 mSettingsObserver = new SettingsObserver(mContext, mHandler); 765 registerSettingsCallbacks(); 766 767 mDataConnectionStats = new DataConnectionStats(mContext); 768 mDataConnectionStats.startMonitoring(); 769 770 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 771 772 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 773 774 mKeepaliveTracker = new KeepaliveTracker(mHandler); 775 } 776 777 private NetworkRequest createInternetRequestForTransport(int transportType) { 778 NetworkCapabilities netCap = new NetworkCapabilities(); 779 netCap.addCapability(NET_CAPABILITY_INTERNET); 780 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 781 if (transportType > -1) { 782 netCap.addTransportType(transportType); 783 } 784 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 785 } 786 787 private void handleMobileDataAlwaysOn() { 788 final boolean enable = (Settings.Global.getInt( 789 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 790 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 791 if (enable == isEnabled) { 792 return; // Nothing to do. 793 } 794 795 if (enable) { 796 handleRegisterNetworkRequest(new NetworkRequestInfo( 797 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestInfo.REQUEST)); 798 } else { 799 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 800 } 801 } 802 803 private void registerSettingsCallbacks() { 804 // Watch for global HTTP proxy changes. 805 mSettingsObserver.observe( 806 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 807 EVENT_APPLY_GLOBAL_HTTP_PROXY); 808 809 // Watch for whether or not to keep mobile data always on. 810 mSettingsObserver.observe( 811 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 812 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 813 } 814 815 private synchronized int nextNetworkRequestId() { 816 return mNextNetworkRequestId++; 817 } 818 819 @VisibleForTesting 820 protected int reserveNetId() { 821 synchronized (mNetworkForNetId) { 822 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 823 int netId = mNextNetId; 824 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 825 // Make sure NetID unused. http://b/16815182 826 if (!mNetIdInUse.get(netId)) { 827 mNetIdInUse.put(netId, true); 828 return netId; 829 } 830 } 831 } 832 throw new IllegalStateException("No free netIds"); 833 } 834 835 private NetworkState getFilteredNetworkState(int networkType, int uid) { 836 NetworkInfo info = null; 837 LinkProperties lp = null; 838 NetworkCapabilities nc = null; 839 Network network = null; 840 String subscriberId = null; 841 842 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 843 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 844 if (nai != null) { 845 synchronized (nai) { 846 info = new NetworkInfo(nai.networkInfo); 847 lp = new LinkProperties(nai.linkProperties); 848 nc = new NetworkCapabilities(nai.networkCapabilities); 849 // Network objects are outwardly immutable so there is no point to duplicating. 850 // Duplicating also precludes sharing socket factories and connection pools. 851 network = nai.network; 852 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 853 } 854 info.setType(networkType); 855 } else { 856 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 857 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 858 info.setIsAvailable(true); 859 lp = new LinkProperties(); 860 nc = new NetworkCapabilities(); 861 network = null; 862 } 863 info = getFilteredNetworkInfo(info, lp, uid); 864 } 865 866 return new NetworkState(info, lp, nc, network, subscriberId, null); 867 } 868 869 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 870 if (network == null) { 871 return null; 872 } 873 synchronized (mNetworkForNetId) { 874 return mNetworkForNetId.get(network.netId); 875 } 876 }; 877 878 private Network[] getVpnUnderlyingNetworks(int uid) { 879 if (!mLockdownEnabled) { 880 int user = UserHandle.getUserId(uid); 881 synchronized (mVpns) { 882 Vpn vpn = mVpns.get(user); 883 if (vpn != null && vpn.appliesToUid(uid)) { 884 return vpn.getUnderlyingNetworks(); 885 } 886 } 887 } 888 return null; 889 } 890 891 private NetworkState getUnfilteredActiveNetworkState(int uid) { 892 NetworkInfo info = null; 893 LinkProperties lp = null; 894 NetworkCapabilities nc = null; 895 Network network = null; 896 String subscriberId = null; 897 898 NetworkAgentInfo nai = getDefaultNetwork(); 899 900 final Network[] networks = getVpnUnderlyingNetworks(uid); 901 if (networks != null) { 902 // getUnderlyingNetworks() returns: 903 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 904 // empty array => the VPN explicitly said "no default network". 905 // non-empty array => the VPN specified one or more default networks; we use the 906 // first one. 907 if (networks.length > 0) { 908 nai = getNetworkAgentInfoForNetwork(networks[0]); 909 } else { 910 nai = null; 911 } 912 } 913 914 if (nai != null) { 915 synchronized (nai) { 916 info = new NetworkInfo(nai.networkInfo); 917 lp = new LinkProperties(nai.linkProperties); 918 nc = new NetworkCapabilities(nai.networkCapabilities); 919 // Network objects are outwardly immutable so there is no point to duplicating. 920 // Duplicating also precludes sharing socket factories and connection pools. 921 network = nai.network; 922 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 923 } 924 } 925 926 return new NetworkState(info, lp, nc, network, subscriberId, null); 927 } 928 929 /** 930 * Check if UID should be blocked from using the network with the given LinkProperties. 931 */ 932 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 933 final boolean networkCostly; 934 final int uidRules; 935 936 final String iface = (lp == null ? "" : lp.getInterfaceName()); 937 synchronized (mRulesLock) { 938 networkCostly = mMeteredIfaces.contains(iface); 939 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 940 } 941 942 if ((uidRules & RULE_REJECT_ALL) != 0 943 || (networkCostly && (uidRules & RULE_REJECT_METERED) != 0)) { 944 return true; 945 } 946 947 // no restrictive rules; network is visible 948 return false; 949 } 950 951 /** 952 * Return a filtered {@link NetworkInfo}, potentially marked 953 * {@link DetailedState#BLOCKED} based on 954 * {@link #isNetworkWithLinkPropertiesBlocked}. 955 */ 956 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 957 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 958 // network is blocked; clone and override state 959 info = new NetworkInfo(info); 960 info.setDetailedState(DetailedState.BLOCKED, null, null); 961 if (VDBG) { 962 log("returning Blocked NetworkInfo for ifname=" + 963 lp.getInterfaceName() + ", uid=" + uid); 964 } 965 } 966 if (info != null && mLockdownTracker != null) { 967 info = mLockdownTracker.augmentNetworkInfo(info); 968 if (VDBG) log("returning Locked NetworkInfo"); 969 } 970 return info; 971 } 972 973 /** 974 * Return NetworkInfo for the active (i.e., connected) network interface. 975 * It is assumed that at most one network is active at a time. If more 976 * than one is active, it is indeterminate which will be returned. 977 * @return the info for the active network, or {@code null} if none is 978 * active 979 */ 980 @Override 981 public NetworkInfo getActiveNetworkInfo() { 982 enforceAccessPermission(); 983 final int uid = Binder.getCallingUid(); 984 NetworkState state = getUnfilteredActiveNetworkState(uid); 985 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 986 } 987 988 @Override 989 public Network getActiveNetwork() { 990 enforceAccessPermission(); 991 final int uid = Binder.getCallingUid(); 992 final int user = UserHandle.getUserId(uid); 993 int vpnNetId = NETID_UNSET; 994 synchronized (mVpns) { 995 final Vpn vpn = mVpns.get(user); 996 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 997 } 998 NetworkAgentInfo nai; 999 if (vpnNetId != NETID_UNSET) { 1000 synchronized (mNetworkForNetId) { 1001 nai = mNetworkForNetId.get(vpnNetId); 1002 } 1003 if (nai != null) return nai.network; 1004 } 1005 nai = getDefaultNetwork(); 1006 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 1007 return nai != null ? nai.network : null; 1008 } 1009 1010 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1011 enforceAccessPermission(); 1012 final int uid = Binder.getCallingUid(); 1013 NetworkState state = getUnfilteredActiveNetworkState(uid); 1014 return state.networkInfo; 1015 } 1016 1017 @Override 1018 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1019 enforceConnectivityInternalPermission(); 1020 NetworkState state = getUnfilteredActiveNetworkState(uid); 1021 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1022 } 1023 1024 @Override 1025 public NetworkInfo getNetworkInfo(int networkType) { 1026 enforceAccessPermission(); 1027 final int uid = Binder.getCallingUid(); 1028 if (getVpnUnderlyingNetworks(uid) != null) { 1029 // A VPN is active, so we may need to return one of its underlying networks. This 1030 // information is not available in LegacyTypeTracker, so we have to get it from 1031 // getUnfilteredActiveNetworkState. 1032 NetworkState state = getUnfilteredActiveNetworkState(uid); 1033 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1034 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1035 } 1036 } 1037 NetworkState state = getFilteredNetworkState(networkType, uid); 1038 return state.networkInfo; 1039 } 1040 1041 @Override 1042 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1043 enforceAccessPermission(); 1044 final int uid = Binder.getCallingUid(); 1045 NetworkInfo info = null; 1046 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1047 if (nai != null) { 1048 synchronized (nai) { 1049 info = new NetworkInfo(nai.networkInfo); 1050 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1051 } 1052 } 1053 return info; 1054 } 1055 1056 @Override 1057 public NetworkInfo[] getAllNetworkInfo() { 1058 enforceAccessPermission(); 1059 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1060 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1061 networkType++) { 1062 NetworkInfo info = getNetworkInfo(networkType); 1063 if (info != null) { 1064 result.add(info); 1065 } 1066 } 1067 return result.toArray(new NetworkInfo[result.size()]); 1068 } 1069 1070 @Override 1071 public Network getNetworkForType(int networkType) { 1072 enforceAccessPermission(); 1073 final int uid = Binder.getCallingUid(); 1074 NetworkState state = getFilteredNetworkState(networkType, uid); 1075 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1076 return state.network; 1077 } 1078 return null; 1079 } 1080 1081 @Override 1082 public Network[] getAllNetworks() { 1083 enforceAccessPermission(); 1084 synchronized (mNetworkForNetId) { 1085 final Network[] result = new Network[mNetworkForNetId.size()]; 1086 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1087 result[i] = mNetworkForNetId.valueAt(i).network; 1088 } 1089 return result; 1090 } 1091 } 1092 1093 @Override 1094 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1095 // The basic principle is: if an app's traffic could possibly go over a 1096 // network, without the app doing anything multinetwork-specific, 1097 // (hence, by "default"), then include that network's capabilities in 1098 // the array. 1099 // 1100 // In the normal case, app traffic only goes over the system's default 1101 // network connection, so that's the only network returned. 1102 // 1103 // With a VPN in force, some app traffic may go into the VPN, and thus 1104 // over whatever underlying networks the VPN specifies, while other app 1105 // traffic may go over the system default network (e.g.: a split-tunnel 1106 // VPN, or an app disallowed by the VPN), so the set of networks 1107 // returned includes the VPN's underlying networks and the system 1108 // default. 1109 enforceAccessPermission(); 1110 1111 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1112 1113 NetworkAgentInfo nai = getDefaultNetwork(); 1114 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1115 if (nc != null) { 1116 result.put(nai.network, nc); 1117 } 1118 1119 if (!mLockdownEnabled) { 1120 synchronized (mVpns) { 1121 Vpn vpn = mVpns.get(userId); 1122 if (vpn != null) { 1123 Network[] networks = vpn.getUnderlyingNetworks(); 1124 if (networks != null) { 1125 for (Network network : networks) { 1126 nai = getNetworkAgentInfoForNetwork(network); 1127 nc = getNetworkCapabilitiesInternal(nai); 1128 if (nc != null) { 1129 result.put(network, nc); 1130 } 1131 } 1132 } 1133 } 1134 } 1135 } 1136 1137 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1138 out = result.values().toArray(out); 1139 return out; 1140 } 1141 1142 @Override 1143 public boolean isNetworkSupported(int networkType) { 1144 enforceAccessPermission(); 1145 return mLegacyTypeTracker.isTypeSupported(networkType); 1146 } 1147 1148 /** 1149 * Return LinkProperties for the active (i.e., connected) default 1150 * network interface. It is assumed that at most one default network 1151 * is active at a time. If more than one is active, it is indeterminate 1152 * which will be returned. 1153 * @return the ip properties for the active network, or {@code null} if 1154 * none is active 1155 */ 1156 @Override 1157 public LinkProperties getActiveLinkProperties() { 1158 enforceAccessPermission(); 1159 final int uid = Binder.getCallingUid(); 1160 NetworkState state = getUnfilteredActiveNetworkState(uid); 1161 return state.linkProperties; 1162 } 1163 1164 @Override 1165 public LinkProperties getLinkPropertiesForType(int networkType) { 1166 enforceAccessPermission(); 1167 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1168 if (nai != null) { 1169 synchronized (nai) { 1170 return new LinkProperties(nai.linkProperties); 1171 } 1172 } 1173 return null; 1174 } 1175 1176 // TODO - this should be ALL networks 1177 @Override 1178 public LinkProperties getLinkProperties(Network network) { 1179 enforceAccessPermission(); 1180 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1181 if (nai != null) { 1182 synchronized (nai) { 1183 return new LinkProperties(nai.linkProperties); 1184 } 1185 } 1186 return null; 1187 } 1188 1189 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1190 if (nai != null) { 1191 synchronized (nai) { 1192 if (nai.networkCapabilities != null) { 1193 return new NetworkCapabilities(nai.networkCapabilities); 1194 } 1195 } 1196 } 1197 return null; 1198 } 1199 1200 @Override 1201 public NetworkCapabilities getNetworkCapabilities(Network network) { 1202 enforceAccessPermission(); 1203 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1204 } 1205 1206 @Override 1207 public NetworkState[] getAllNetworkState() { 1208 // Require internal since we're handing out IMSI details 1209 enforceConnectivityInternalPermission(); 1210 1211 final ArrayList<NetworkState> result = Lists.newArrayList(); 1212 for (Network network : getAllNetworks()) { 1213 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1214 if (nai != null) { 1215 synchronized (nai) { 1216 final String subscriberId = (nai.networkMisc != null) 1217 ? nai.networkMisc.subscriberId : null; 1218 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1219 nai.networkCapabilities, network, subscriberId, null)); 1220 } 1221 } 1222 } 1223 return result.toArray(new NetworkState[result.size()]); 1224 } 1225 1226 @Override 1227 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1228 enforceAccessPermission(); 1229 final int uid = Binder.getCallingUid(); 1230 final long token = Binder.clearCallingIdentity(); 1231 try { 1232 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1233 if (state.networkInfo != null) { 1234 try { 1235 return mPolicyManager.getNetworkQuotaInfo(state); 1236 } catch (RemoteException e) { 1237 } 1238 } 1239 return null; 1240 } finally { 1241 Binder.restoreCallingIdentity(token); 1242 } 1243 } 1244 1245 @Override 1246 public boolean isActiveNetworkMetered() { 1247 enforceAccessPermission(); 1248 final int uid = Binder.getCallingUid(); 1249 final long token = Binder.clearCallingIdentity(); 1250 try { 1251 return isActiveNetworkMeteredUnchecked(uid); 1252 } finally { 1253 Binder.restoreCallingIdentity(token); 1254 } 1255 } 1256 1257 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1258 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1259 if (state.networkInfo != null) { 1260 try { 1261 return mPolicyManager.isNetworkMetered(state); 1262 } catch (RemoteException e) { 1263 } 1264 } 1265 return false; 1266 } 1267 1268 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1269 @Override 1270 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1271 int deviceType = Integer.parseInt(label); 1272 sendDataActivityBroadcast(deviceType, active, tsNanos); 1273 } 1274 }; 1275 1276 /** 1277 * Ensure that a network route exists to deliver traffic to the specified 1278 * host via the specified network interface. 1279 * @param networkType the type of the network over which traffic to the 1280 * specified host is to be routed 1281 * @param hostAddress the IP address of the host to which the route is 1282 * desired 1283 * @return {@code true} on success, {@code false} on failure 1284 */ 1285 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1286 enforceChangePermission(); 1287 if (mProtectedNetworks.contains(networkType)) { 1288 enforceConnectivityInternalPermission(); 1289 } 1290 1291 InetAddress addr; 1292 try { 1293 addr = InetAddress.getByAddress(hostAddress); 1294 } catch (UnknownHostException e) { 1295 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1296 return false; 1297 } 1298 1299 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1300 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1301 return false; 1302 } 1303 1304 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1305 if (nai == null) { 1306 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1307 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1308 } else { 1309 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1310 } 1311 return false; 1312 } 1313 1314 DetailedState netState; 1315 synchronized (nai) { 1316 netState = nai.networkInfo.getDetailedState(); 1317 } 1318 1319 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1320 if (VDBG) { 1321 log("requestRouteToHostAddress on down network " 1322 + "(" + networkType + ") - dropped" 1323 + " netState=" + netState); 1324 } 1325 return false; 1326 } 1327 1328 final int uid = Binder.getCallingUid(); 1329 final long token = Binder.clearCallingIdentity(); 1330 try { 1331 LinkProperties lp; 1332 int netId; 1333 synchronized (nai) { 1334 lp = nai.linkProperties; 1335 netId = nai.network.netId; 1336 } 1337 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1338 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1339 return ok; 1340 } finally { 1341 Binder.restoreCallingIdentity(token); 1342 } 1343 } 1344 1345 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1346 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1347 if (bestRoute == null) { 1348 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1349 } else { 1350 String iface = bestRoute.getInterface(); 1351 if (bestRoute.getGateway().equals(addr)) { 1352 // if there is no better route, add the implied hostroute for our gateway 1353 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1354 } else { 1355 // if we will connect to this through another route, add a direct route 1356 // to it's gateway 1357 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1358 } 1359 } 1360 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1361 try { 1362 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1363 } catch (Exception e) { 1364 // never crash - catch them all 1365 if (DBG) loge("Exception trying to add a route: " + e); 1366 return false; 1367 } 1368 return true; 1369 } 1370 1371 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1372 @Override 1373 public void onUidRulesChanged(int uid, int uidRules) { 1374 // caller is NPMS, since we only register with them 1375 if (LOGD_RULES) { 1376 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1377 } 1378 1379 synchronized (mRulesLock) { 1380 // skip update when we've already applied rules 1381 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1382 if (oldRules == uidRules) return; 1383 1384 mUidRules.put(uid, uidRules); 1385 } 1386 1387 // TODO: notify UID when it has requested targeted updates 1388 } 1389 1390 @Override 1391 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1392 // caller is NPMS, since we only register with them 1393 if (LOGD_RULES) { 1394 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1395 } 1396 1397 synchronized (mRulesLock) { 1398 mMeteredIfaces.clear(); 1399 for (String iface : meteredIfaces) { 1400 mMeteredIfaces.add(iface); 1401 } 1402 } 1403 } 1404 1405 @Override 1406 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1407 // caller is NPMS, since we only register with them 1408 if (LOGD_RULES) { 1409 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1410 } 1411 } 1412 }; 1413 1414 /** 1415 * Require that the caller is either in the same user or has appropriate permission to interact 1416 * across users. 1417 * 1418 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1419 */ 1420 private void enforceCrossUserPermission(int userId) { 1421 if (userId == UserHandle.getCallingUserId()) { 1422 // Not a cross-user call. 1423 return; 1424 } 1425 mContext.enforceCallingOrSelfPermission( 1426 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1427 "ConnectivityService"); 1428 } 1429 1430 private void enforceInternetPermission() { 1431 mContext.enforceCallingOrSelfPermission( 1432 android.Manifest.permission.INTERNET, 1433 "ConnectivityService"); 1434 } 1435 1436 private void enforceAccessPermission() { 1437 mContext.enforceCallingOrSelfPermission( 1438 android.Manifest.permission.ACCESS_NETWORK_STATE, 1439 "ConnectivityService"); 1440 } 1441 1442 private void enforceChangePermission() { 1443 int uid = Binder.getCallingUid(); 1444 Settings.checkAndNoteChangeNetworkStateOperation(mContext, uid, Settings 1445 .getPackageNameForUid(mContext, uid), true); 1446 1447 } 1448 1449 private void enforceTetherAccessPermission() { 1450 mContext.enforceCallingOrSelfPermission( 1451 android.Manifest.permission.ACCESS_NETWORK_STATE, 1452 "ConnectivityService"); 1453 } 1454 1455 private void enforceConnectivityInternalPermission() { 1456 mContext.enforceCallingOrSelfPermission( 1457 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1458 "ConnectivityService"); 1459 } 1460 1461 private void enforceKeepalivePermission() { 1462 mContext.enforceCallingPermission(KeepaliveTracker.PERMISSION, "ConnectivityService"); 1463 } 1464 1465 public void sendConnectedBroadcast(NetworkInfo info) { 1466 enforceConnectivityInternalPermission(); 1467 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1468 } 1469 1470 private void sendInetConditionBroadcast(NetworkInfo info) { 1471 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1472 } 1473 1474 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1475 if (mLockdownTracker != null) { 1476 info = mLockdownTracker.augmentNetworkInfo(info); 1477 } 1478 1479 Intent intent = new Intent(bcastType); 1480 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1481 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1482 if (info.isFailover()) { 1483 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1484 info.setFailover(false); 1485 } 1486 if (info.getReason() != null) { 1487 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1488 } 1489 if (info.getExtraInfo() != null) { 1490 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1491 info.getExtraInfo()); 1492 } 1493 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1494 return intent; 1495 } 1496 1497 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1498 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1499 } 1500 1501 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1502 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1503 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1504 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1505 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1506 final long ident = Binder.clearCallingIdentity(); 1507 try { 1508 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1509 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1510 } finally { 1511 Binder.restoreCallingIdentity(ident); 1512 } 1513 } 1514 1515 private void sendStickyBroadcast(Intent intent) { 1516 synchronized(this) { 1517 if (!mSystemReady) { 1518 mInitialBroadcast = new Intent(intent); 1519 } 1520 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1521 if (DBG) { 1522 log("sendStickyBroadcast: action=" + intent.getAction()); 1523 } 1524 1525 final long ident = Binder.clearCallingIdentity(); 1526 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1527 final IBatteryStats bs = BatteryStatsService.getService(); 1528 try { 1529 NetworkInfo ni = intent.getParcelableExtra( 1530 ConnectivityManager.EXTRA_NETWORK_INFO); 1531 bs.noteConnectivityChanged(intent.getIntExtra( 1532 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1533 ni != null ? ni.getState().toString() : "?"); 1534 } catch (RemoteException e) { 1535 } 1536 } 1537 try { 1538 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1539 } finally { 1540 Binder.restoreCallingIdentity(ident); 1541 } 1542 } 1543 } 1544 1545 void systemReady() { 1546 loadGlobalProxy(); 1547 1548 synchronized(this) { 1549 mSystemReady = true; 1550 if (mInitialBroadcast != null) { 1551 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1552 mInitialBroadcast = null; 1553 } 1554 } 1555 // load the global proxy at startup 1556 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1557 1558 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1559 // for user to unlock device. 1560 if (!updateLockdownVpn()) { 1561 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1562 mContext.registerReceiver(mUserPresentReceiver, filter); 1563 } 1564 1565 // Configure whether mobile data is always on. 1566 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1567 1568 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1569 1570 mPermissionMonitor.startMonitoring(); 1571 } 1572 1573 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1574 @Override 1575 public void onReceive(Context context, Intent intent) { 1576 // Try creating lockdown tracker, since user present usually means 1577 // unlocked keystore. 1578 if (updateLockdownVpn()) { 1579 mContext.unregisterReceiver(this); 1580 } 1581 } 1582 }; 1583 1584 /** 1585 * Setup data activity tracking for the given network. 1586 * 1587 * Every {@code setupDataActivityTracking} should be paired with a 1588 * {@link #removeDataActivityTracking} for cleanup. 1589 */ 1590 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1591 final String iface = networkAgent.linkProperties.getInterfaceName(); 1592 1593 final int timeout; 1594 int type = ConnectivityManager.TYPE_NONE; 1595 1596 if (networkAgent.networkCapabilities.hasTransport( 1597 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1598 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1599 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1600 5); 1601 type = ConnectivityManager.TYPE_MOBILE; 1602 } else if (networkAgent.networkCapabilities.hasTransport( 1603 NetworkCapabilities.TRANSPORT_WIFI)) { 1604 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1605 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1606 15); 1607 type = ConnectivityManager.TYPE_WIFI; 1608 } else { 1609 // do not track any other networks 1610 timeout = 0; 1611 } 1612 1613 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1614 try { 1615 mNetd.addIdleTimer(iface, timeout, type); 1616 } catch (Exception e) { 1617 // You shall not crash! 1618 loge("Exception in setupDataActivityTracking " + e); 1619 } 1620 } 1621 } 1622 1623 /** 1624 * Remove data activity tracking when network disconnects. 1625 */ 1626 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1627 final String iface = networkAgent.linkProperties.getInterfaceName(); 1628 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1629 1630 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1631 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1632 try { 1633 // the call fails silently if no idletimer setup for this interface 1634 mNetd.removeIdleTimer(iface); 1635 } catch (Exception e) { 1636 loge("Exception in removeDataActivityTracking " + e); 1637 } 1638 } 1639 } 1640 1641 /** 1642 * Reads the network specific MTU size from reources. 1643 * and set it on it's iface. 1644 */ 1645 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1646 final String iface = newLp.getInterfaceName(); 1647 final int mtu = newLp.getMtu(); 1648 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1649 if (VDBG) log("identical MTU - not setting"); 1650 return; 1651 } 1652 1653 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1654 loge("Unexpected mtu value: " + mtu + ", " + iface); 1655 return; 1656 } 1657 1658 // Cannot set MTU without interface name 1659 if (TextUtils.isEmpty(iface)) { 1660 loge("Setting MTU size with null iface."); 1661 return; 1662 } 1663 1664 try { 1665 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1666 mNetd.setMtu(iface, mtu); 1667 } catch (Exception e) { 1668 Slog.e(TAG, "exception in setMtu()" + e); 1669 } 1670 } 1671 1672 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1673 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1674 1675 // Overridden for testing purposes to avoid writing to SystemProperties. 1676 @VisibleForTesting 1677 protected int getDefaultTcpRwnd() { 1678 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1679 } 1680 1681 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1682 if (isDefaultNetwork(nai) == false) { 1683 return; 1684 } 1685 1686 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1687 String[] values = null; 1688 if (tcpBufferSizes != null) { 1689 values = tcpBufferSizes.split(","); 1690 } 1691 1692 if (values == null || values.length != 6) { 1693 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1694 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1695 values = tcpBufferSizes.split(","); 1696 } 1697 1698 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1699 1700 try { 1701 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1702 1703 final String prefix = "/sys/kernel/ipv4/tcp_"; 1704 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1705 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1706 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1707 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1708 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1709 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1710 mCurrentTcpBufferSizes = tcpBufferSizes; 1711 } catch (IOException e) { 1712 loge("Can't set TCP buffer sizes:" + e); 1713 } 1714 1715 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1716 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1717 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1718 if (rwndValue != 0) { 1719 SystemProperties.set(sysctlKey, rwndValue.toString()); 1720 } 1721 } 1722 1723 private void flushVmDnsCache() { 1724 /* 1725 * Tell the VMs to toss their DNS caches 1726 */ 1727 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1728 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1729 /* 1730 * Connectivity events can happen before boot has completed ... 1731 */ 1732 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1733 final long ident = Binder.clearCallingIdentity(); 1734 try { 1735 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1736 } finally { 1737 Binder.restoreCallingIdentity(ident); 1738 } 1739 } 1740 1741 @Override 1742 public int getRestoreDefaultNetworkDelay(int networkType) { 1743 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1744 NETWORK_RESTORE_DELAY_PROP_NAME); 1745 if(restoreDefaultNetworkDelayStr != null && 1746 restoreDefaultNetworkDelayStr.length() != 0) { 1747 try { 1748 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1749 } catch (NumberFormatException e) { 1750 } 1751 } 1752 // if the system property isn't set, use the value for the apn type 1753 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1754 1755 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1756 (mNetConfigs[networkType] != null)) { 1757 ret = mNetConfigs[networkType].restoreTime; 1758 } 1759 return ret; 1760 } 1761 1762 private boolean argsContain(String[] args, String target) { 1763 for (String arg : args) { 1764 if (arg.equals(target)) return true; 1765 } 1766 return false; 1767 } 1768 1769 @Override 1770 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1771 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1772 if (mContext.checkCallingOrSelfPermission( 1773 android.Manifest.permission.DUMP) 1774 != PackageManager.PERMISSION_GRANTED) { 1775 pw.println("Permission Denial: can't dump ConnectivityService " + 1776 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1777 Binder.getCallingUid()); 1778 return; 1779 } 1780 1781 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1782 if (argsContain(args, "--diag")) { 1783 final long DIAG_TIME_MS = 5000; 1784 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1785 // Start gathering diagnostic information. 1786 netDiags.add(new NetworkDiagnostics( 1787 nai.network, 1788 new LinkProperties(nai.linkProperties), // Must be a copy. 1789 DIAG_TIME_MS)); 1790 } 1791 1792 for (NetworkDiagnostics netDiag : netDiags) { 1793 pw.println(); 1794 netDiag.waitForMeasurements(); 1795 netDiag.dump(pw); 1796 } 1797 1798 return; 1799 } 1800 1801 pw.print("NetworkFactories for:"); 1802 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1803 pw.print(" " + nfi.name); 1804 } 1805 pw.println(); 1806 pw.println(); 1807 1808 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 1809 pw.print("Active default network: "); 1810 if (defaultNai == null) { 1811 pw.println("none"); 1812 } else { 1813 pw.println(defaultNai.network.netId); 1814 } 1815 pw.println(); 1816 1817 pw.println("Current Networks:"); 1818 pw.increaseIndent(); 1819 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1820 pw.println(nai.toString()); 1821 pw.increaseIndent(); 1822 pw.println("Requests:"); 1823 pw.increaseIndent(); 1824 for (int i = 0; i < nai.networkRequests.size(); i++) { 1825 pw.println(nai.networkRequests.valueAt(i).toString()); 1826 } 1827 pw.decreaseIndent(); 1828 pw.println("Lingered:"); 1829 pw.increaseIndent(); 1830 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1831 pw.decreaseIndent(); 1832 pw.decreaseIndent(); 1833 } 1834 pw.decreaseIndent(); 1835 pw.println(); 1836 1837 pw.println("Network Requests:"); 1838 pw.increaseIndent(); 1839 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1840 pw.println(nri.toString()); 1841 } 1842 pw.println(); 1843 pw.decreaseIndent(); 1844 1845 mLegacyTypeTracker.dump(pw); 1846 1847 synchronized (this) { 1848 pw.print("mNetTransitionWakeLock: currently " + 1849 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1850 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1851 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1852 } else { 1853 pw.println(", last requested never"); 1854 } 1855 } 1856 1857 pw.println(); 1858 mTethering.dump(fd, pw, args); 1859 1860 pw.println(); 1861 mKeepaliveTracker.dump(pw); 1862 1863 if (mInetLog != null && mInetLog.size() > 0) { 1864 pw.println(); 1865 pw.println("Inet condition reports:"); 1866 pw.increaseIndent(); 1867 for(int i = 0; i < mInetLog.size(); i++) { 1868 pw.println(mInetLog.get(i)); 1869 } 1870 pw.decreaseIndent(); 1871 } 1872 1873 if (argsContain(args, "--short") == false) { 1874 pw.println(); 1875 synchronized (mValidationLogs) { 1876 pw.println("mValidationLogs (most recent first):"); 1877 for (Pair<Network,ReadOnlyLocalLog> p : mValidationLogs) { 1878 pw.println(p.first); 1879 pw.increaseIndent(); 1880 p.second.dump(fd, pw, args); 1881 pw.decreaseIndent(); 1882 } 1883 } 1884 1885 pw.println(); 1886 pw.println("mNetworkRequestInfoLogs (most recent first):"); 1887 pw.increaseIndent(); 1888 mNetworkRequestInfoLogs.reverseDump(fd, pw, args); 1889 pw.decreaseIndent(); 1890 } 1891 } 1892 1893 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1894 if (nai.network == null) return false; 1895 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1896 if (officialNai != null && officialNai.equals(nai)) return true; 1897 if (officialNai != null || VDBG) { 1898 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1899 " - " + nai); 1900 } 1901 return false; 1902 } 1903 1904 private boolean isRequest(NetworkRequest request) { 1905 return mNetworkRequests.get(request).isRequest; 1906 } 1907 1908 // must be stateless - things change under us. 1909 private class NetworkStateTrackerHandler extends Handler { 1910 public NetworkStateTrackerHandler(Looper looper) { 1911 super(looper); 1912 } 1913 1914 @Override 1915 public void handleMessage(Message msg) { 1916 NetworkInfo info; 1917 switch (msg.what) { 1918 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1919 handleAsyncChannelHalfConnect(msg); 1920 break; 1921 } 1922 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1923 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1924 if (nai != null) nai.asyncChannel.disconnect(); 1925 break; 1926 } 1927 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1928 handleAsyncChannelDisconnected(msg); 1929 break; 1930 } 1931 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1932 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1933 if (nai == null) { 1934 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1935 } else { 1936 final NetworkCapabilities networkCapabilities = 1937 (NetworkCapabilities)msg.obj; 1938 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL) || 1939 networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 1940 Slog.wtf(TAG, "BUG: " + nai + " has CS-managed capability."); 1941 } 1942 if (nai.created && !nai.networkCapabilities.equalImmutableCapabilities( 1943 networkCapabilities)) { 1944 Slog.wtf(TAG, "BUG: " + nai + " changed immutable capabilities: " 1945 + nai.networkCapabilities + " -> " + networkCapabilities); 1946 } 1947 updateCapabilities(nai, networkCapabilities); 1948 } 1949 break; 1950 } 1951 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1952 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1953 if (nai == null) { 1954 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1955 } else { 1956 if (VDBG) { 1957 log("Update of LinkProperties for " + nai.name() + 1958 "; created=" + nai.created); 1959 } 1960 LinkProperties oldLp = nai.linkProperties; 1961 synchronized (nai) { 1962 nai.linkProperties = (LinkProperties)msg.obj; 1963 } 1964 if (nai.created) updateLinkProperties(nai, oldLp); 1965 } 1966 break; 1967 } 1968 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1969 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1970 if (nai == null) { 1971 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1972 break; 1973 } 1974 info = (NetworkInfo) msg.obj; 1975 updateNetworkInfo(nai, info); 1976 break; 1977 } 1978 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1979 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1980 if (nai == null) { 1981 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1982 break; 1983 } 1984 Integer score = (Integer) msg.obj; 1985 if (score != null) updateNetworkScore(nai, score.intValue()); 1986 break; 1987 } 1988 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1989 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1990 if (nai == null) { 1991 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1992 break; 1993 } 1994 try { 1995 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1996 } catch (Exception e) { 1997 // Never crash! 1998 loge("Exception in addVpnUidRanges: " + e); 1999 } 2000 break; 2001 } 2002 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 2003 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2004 if (nai == null) { 2005 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 2006 break; 2007 } 2008 try { 2009 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2010 } catch (Exception e) { 2011 // Never crash! 2012 loge("Exception in removeVpnUidRanges: " + e); 2013 } 2014 break; 2015 } 2016 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 2017 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2018 if (nai == null) { 2019 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 2020 break; 2021 } 2022 if (nai.created && !nai.networkMisc.explicitlySelected) { 2023 loge("ERROR: created network explicitly selected."); 2024 } 2025 nai.networkMisc.explicitlySelected = true; 2026 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 2027 break; 2028 } 2029 case NetworkAgent.EVENT_PACKET_KEEPALIVE: { 2030 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2031 if (nai == null) { 2032 loge("EVENT_PACKET_KEEPALIVE from unknown NetworkAgent"); 2033 break; 2034 } 2035 mKeepaliveTracker.handleEventPacketKeepalive(nai, msg); 2036 break; 2037 } 2038 case NetworkMonitor.EVENT_NETWORK_TESTED: { 2039 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2040 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_TESTED")) { 2041 final boolean valid = 2042 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2043 if (DBG) log(nai.name() + " validation " + (valid ? " passed" : "failed")); 2044 if (valid != nai.lastValidated) { 2045 final int oldScore = nai.getCurrentScore(); 2046 nai.lastValidated = valid; 2047 nai.everValidated |= valid; 2048 updateCapabilities(nai, nai.networkCapabilities); 2049 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2050 if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); 2051 } 2052 updateInetCondition(nai); 2053 // Let the NetworkAgent know the state of its network 2054 nai.asyncChannel.sendMessage( 2055 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2056 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2057 0, null); 2058 } 2059 break; 2060 } 2061 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2062 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2063 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 2064 handleLingerComplete(nai); 2065 } 2066 break; 2067 } 2068 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2069 final int netId = msg.arg2; 2070 final boolean visible = (msg.arg1 != 0); 2071 final NetworkAgentInfo nai; 2072 synchronized (mNetworkForNetId) { 2073 nai = mNetworkForNetId.get(netId); 2074 } 2075 // If captive portal status has changed, update capabilities. 2076 if (nai != null && (visible != nai.lastCaptivePortalDetected)) { 2077 nai.lastCaptivePortalDetected = visible; 2078 nai.everCaptivePortalDetected |= visible; 2079 updateCapabilities(nai, nai.networkCapabilities); 2080 } 2081 if (!visible) { 2082 setProvNotificationVisibleIntent(false, netId, null, 0, null, null, false); 2083 } else { 2084 if (nai == null) { 2085 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2086 break; 2087 } 2088 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2089 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), 2090 (PendingIntent)msg.obj, nai.networkMisc.explicitlySelected); 2091 } 2092 break; 2093 } 2094 } 2095 } 2096 } 2097 2098 private void linger(NetworkAgentInfo nai) { 2099 nai.lingering = true; 2100 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 2101 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 2102 } 2103 2104 // Cancel any lingering so the linger timeout doesn't teardown a network. 2105 // This should be called when a network begins satisfying a NetworkRequest. 2106 // Note: depending on what state the NetworkMonitor is in (e.g., 2107 // if it's awaiting captive portal login, or if validation failed), this 2108 // may trigger a re-evaluation of the network. 2109 private void unlinger(NetworkAgentInfo nai) { 2110 nai.networkLingered.clear(); 2111 if (!nai.lingering) return; 2112 nai.lingering = false; 2113 if (VDBG) log("Canceling linger of " + nai.name()); 2114 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2115 } 2116 2117 private void handleAsyncChannelHalfConnect(Message msg) { 2118 AsyncChannel ac = (AsyncChannel) msg.obj; 2119 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2120 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2121 if (VDBG) log("NetworkFactory connected"); 2122 // A network factory has connected. Send it all current NetworkRequests. 2123 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2124 if (nri.isRequest == false) continue; 2125 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2126 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2127 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2128 } 2129 } else { 2130 loge("Error connecting NetworkFactory"); 2131 mNetworkFactoryInfos.remove(msg.obj); 2132 } 2133 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2134 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2135 if (VDBG) log("NetworkAgent connected"); 2136 // A network agent has requested a connection. Establish the connection. 2137 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2138 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2139 } else { 2140 loge("Error connecting NetworkAgent"); 2141 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2142 if (nai != null) { 2143 final boolean wasDefault = isDefaultNetwork(nai); 2144 synchronized (mNetworkForNetId) { 2145 mNetworkForNetId.remove(nai.network.netId); 2146 mNetIdInUse.delete(nai.network.netId); 2147 } 2148 // Just in case. 2149 mLegacyTypeTracker.remove(nai, wasDefault); 2150 } 2151 } 2152 } 2153 } 2154 2155 private void handleAsyncChannelDisconnected(Message msg) { 2156 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2157 if (nai != null) { 2158 if (DBG) { 2159 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2160 } 2161 // A network agent has disconnected. 2162 // TODO - if we move the logic to the network agent (have them disconnect 2163 // because they lost all their requests or because their score isn't good) 2164 // then they would disconnect organically, report their new state and then 2165 // disconnect the channel. 2166 if (nai.networkInfo.isConnected()) { 2167 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2168 null, null); 2169 } 2170 final boolean wasDefault = isDefaultNetwork(nai); 2171 if (wasDefault) { 2172 mDefaultInetConditionPublished = 0; 2173 } 2174 notifyIfacesChanged(); 2175 // TODO - we shouldn't send CALLBACK_LOST to requests that can be satisfied 2176 // by other networks that are already connected. Perhaps that can be done by 2177 // sending all CALLBACK_LOST messages (for requests, not listens) at the end 2178 // of rematchAllNetworksAndRequests 2179 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2180 mKeepaliveTracker.handleStopAllKeepalives(nai, 2181 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 2182 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2183 mNetworkAgentInfos.remove(msg.replyTo); 2184 updateClat(null, nai.linkProperties, nai); 2185 synchronized (mNetworkForNetId) { 2186 // Remove the NetworkAgent, but don't mark the netId as 2187 // available until we've told netd to delete it below. 2188 mNetworkForNetId.remove(nai.network.netId); 2189 } 2190 // Remove all previously satisfied requests. 2191 for (int i = 0; i < nai.networkRequests.size(); i++) { 2192 NetworkRequest request = nai.networkRequests.valueAt(i); 2193 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2194 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2195 mNetworkForRequestId.remove(request.requestId); 2196 sendUpdatedScoreToFactories(request, 0); 2197 } 2198 } 2199 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2200 removeDataActivityTracking(nai); 2201 notifyLockdownVpn(nai); 2202 requestNetworkTransitionWakelock(nai.name()); 2203 } 2204 mLegacyTypeTracker.remove(nai, wasDefault); 2205 rematchAllNetworksAndRequests(null, 0); 2206 if (nai.created) { 2207 // Tell netd to clean up the configuration for this network 2208 // (routing rules, DNS, etc). 2209 // This may be slow as it requires a lot of netd shelling out to ip and 2210 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2211 // after we've rematched networks with requests which should make a potential 2212 // fallback network the default or requested a new network from the 2213 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2214 // long time. 2215 try { 2216 mNetd.removeNetwork(nai.network.netId); 2217 } catch (Exception e) { 2218 loge("Exception removing network: " + e); 2219 } 2220 } 2221 synchronized (mNetworkForNetId) { 2222 mNetIdInUse.delete(nai.network.netId); 2223 } 2224 } else { 2225 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2226 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2227 } 2228 } 2229 2230 // If this method proves to be too slow then we can maintain a separate 2231 // pendingIntent => NetworkRequestInfo map. 2232 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2233 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2234 Intent intent = pendingIntent.getIntent(); 2235 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2236 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2237 if (existingPendingIntent != null && 2238 existingPendingIntent.getIntent().filterEquals(intent)) { 2239 return entry.getValue(); 2240 } 2241 } 2242 return null; 2243 } 2244 2245 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2246 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2247 2248 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2249 if (existingRequest != null) { // remove the existing request. 2250 if (DBG) log("Replacing " + existingRequest.request + " with " 2251 + nri.request + " because their intents matched."); 2252 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2253 } 2254 handleRegisterNetworkRequest(nri); 2255 } 2256 2257 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2258 mNetworkRequests.put(nri.request, nri); 2259 mNetworkRequestInfoLogs.log("REGISTER " + nri); 2260 if (!nri.isRequest) { 2261 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2262 if (network.satisfiesImmutableCapabilitiesOf(nri.request)) { 2263 updateSignalStrengthThresholds(network); 2264 } 2265 } 2266 } 2267 rematchAllNetworksAndRequests(null, 0); 2268 if (nri.isRequest && mNetworkForRequestId.get(nri.request.requestId) == null) { 2269 sendUpdatedScoreToFactories(nri.request, 0); 2270 } 2271 } 2272 2273 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2274 int callingUid) { 2275 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2276 if (nri != null) { 2277 handleReleaseNetworkRequest(nri.request, callingUid); 2278 } 2279 } 2280 2281 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2282 // This is whether it is satisfying any NetworkRequests or were it to become validated, 2283 // would it have a chance of satisfying any NetworkRequests. 2284 private boolean unneeded(NetworkAgentInfo nai) { 2285 if (!nai.created || nai.isVPN() || nai.lingering) return false; 2286 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2287 // If this Network is already the highest scoring Network for a request, or if 2288 // there is hope for it to become one if it validated, then it is needed. 2289 if (nri.isRequest && nai.satisfies(nri.request) && 2290 (nai.networkRequests.get(nri.request.requestId) != null || 2291 // Note that this catches two important cases: 2292 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2293 // is currently satisfying the request. This is desirable when 2294 // cellular ends up validating but WiFi does not. 2295 // 2. Unvalidated WiFi will not be reaped when validated cellular 2296 // is currently satisfying the request. This is desirable when 2297 // WiFi ends up validating and out scoring cellular. 2298 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2299 nai.getCurrentScoreAsValidated())) { 2300 return false; 2301 } 2302 } 2303 return true; 2304 } 2305 2306 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2307 NetworkRequestInfo nri = mNetworkRequests.get(request); 2308 if (nri != null) { 2309 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2310 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2311 return; 2312 } 2313 if (DBG) log("releasing NetworkRequest " + request); 2314 nri.unlinkDeathRecipient(); 2315 mNetworkRequests.remove(request); 2316 mNetworkRequestInfoLogs.log("RELEASE " + nri); 2317 if (nri.isRequest) { 2318 // Find all networks that are satisfying this request and remove the request 2319 // from their request lists. 2320 // TODO - it's my understanding that for a request there is only a single 2321 // network satisfying it, so this loop is wasteful 2322 boolean wasKept = false; 2323 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2324 if (nai.networkRequests.get(nri.request.requestId) != null) { 2325 nai.networkRequests.remove(nri.request.requestId); 2326 if (DBG) { 2327 log(" Removing from current network " + nai.name() + 2328 ", leaving " + nai.networkRequests.size() + 2329 " requests."); 2330 } 2331 if (unneeded(nai)) { 2332 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2333 teardownUnneededNetwork(nai); 2334 } else { 2335 // suspect there should only be one pass through here 2336 // but if any were kept do the check below 2337 wasKept |= true; 2338 } 2339 } 2340 } 2341 2342 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2343 if (nai != null) { 2344 mNetworkForRequestId.remove(nri.request.requestId); 2345 } 2346 // Maintain the illusion. When this request arrived, we might have pretended 2347 // that a network connected to serve it, even though the network was already 2348 // connected. Now that this request has gone away, we might have to pretend 2349 // that the network disconnected. LegacyTypeTracker will generate that 2350 // phantom disconnect for this type. 2351 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2352 boolean doRemove = true; 2353 if (wasKept) { 2354 // check if any of the remaining requests for this network are for the 2355 // same legacy type - if so, don't remove the nai 2356 for (int i = 0; i < nai.networkRequests.size(); i++) { 2357 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2358 if (otherRequest.legacyType == nri.request.legacyType && 2359 isRequest(otherRequest)) { 2360 if (DBG) log(" still have other legacy request - leaving"); 2361 doRemove = false; 2362 } 2363 } 2364 } 2365 2366 if (doRemove) { 2367 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2368 } 2369 } 2370 2371 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2372 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2373 nri.request); 2374 } 2375 } else { 2376 // listens don't have a singular affectedNetwork. Check all networks to see 2377 // if this listen request applies and remove it. 2378 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2379 nai.networkRequests.remove(nri.request.requestId); 2380 if (nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 2381 updateSignalStrengthThresholds(nai); 2382 } 2383 } 2384 } 2385 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2386 } 2387 } 2388 2389 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2390 enforceConnectivityInternalPermission(); 2391 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2392 accept ? 1 : 0, always ? 1: 0, network)); 2393 } 2394 2395 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2396 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2397 " accept=" + accept + " always=" + always); 2398 2399 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2400 if (nai == null) { 2401 // Nothing to do. 2402 return; 2403 } 2404 2405 if (nai.everValidated) { 2406 // The network validated while the dialog box was up. Take no action. 2407 return; 2408 } 2409 2410 if (!nai.networkMisc.explicitlySelected) { 2411 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2412 } 2413 2414 if (accept != nai.networkMisc.acceptUnvalidated) { 2415 int oldScore = nai.getCurrentScore(); 2416 nai.networkMisc.acceptUnvalidated = accept; 2417 rematchAllNetworksAndRequests(nai, oldScore); 2418 sendUpdatedScoreToFactories(nai); 2419 } 2420 2421 if (always) { 2422 nai.asyncChannel.sendMessage( 2423 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2424 } 2425 2426 if (!accept) { 2427 // Tell the NetworkAgent to not automatically reconnect to the network. 2428 nai.asyncChannel.sendMessage(NetworkAgent.CMD_PREVENT_AUTOMATIC_RECONNECT); 2429 // Teardown the nework. 2430 teardownUnneededNetwork(nai); 2431 } 2432 2433 } 2434 2435 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2436 if (DBG) log("scheduleUnvalidatedPrompt " + nai.network); 2437 mHandler.sendMessageDelayed( 2438 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2439 PROMPT_UNVALIDATED_DELAY_MS); 2440 } 2441 2442 private void handlePromptUnvalidated(Network network) { 2443 if (DBG) log("handlePromptUnvalidated " + network); 2444 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2445 2446 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2447 // we haven't already been told to switch to it regardless of whether it validated or not. 2448 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2449 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2450 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2451 return; 2452 } 2453 2454 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2455 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2456 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2457 intent.setClassName("com.android.settings", 2458 "com.android.settings.wifi.WifiNoInternetDialog"); 2459 2460 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2461 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2462 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2463 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent, true); 2464 } 2465 2466 private class InternalHandler extends Handler { 2467 public InternalHandler(Looper looper) { 2468 super(looper); 2469 } 2470 2471 @Override 2472 public void handleMessage(Message msg) { 2473 switch (msg.what) { 2474 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2475 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2476 String causedBy = null; 2477 synchronized (ConnectivityService.this) { 2478 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2479 mNetTransitionWakeLock.isHeld()) { 2480 mNetTransitionWakeLock.release(); 2481 causedBy = mNetTransitionWakeLockCausedBy; 2482 } else { 2483 break; 2484 } 2485 } 2486 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2487 log("Failed to find a new network - expiring NetTransition Wakelock"); 2488 } else { 2489 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2490 " cleared because we found a replacement network"); 2491 } 2492 break; 2493 } 2494 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2495 handleDeprecatedGlobalHttpProxy(); 2496 break; 2497 } 2498 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2499 Intent intent = (Intent)msg.obj; 2500 sendStickyBroadcast(intent); 2501 break; 2502 } 2503 case EVENT_PROXY_HAS_CHANGED: { 2504 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2505 break; 2506 } 2507 case EVENT_REGISTER_NETWORK_FACTORY: { 2508 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2509 break; 2510 } 2511 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2512 handleUnregisterNetworkFactory((Messenger)msg.obj); 2513 break; 2514 } 2515 case EVENT_REGISTER_NETWORK_AGENT: { 2516 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2517 break; 2518 } 2519 case EVENT_REGISTER_NETWORK_REQUEST: 2520 case EVENT_REGISTER_NETWORK_LISTENER: { 2521 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2522 break; 2523 } 2524 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2525 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2526 handleRegisterNetworkRequestWithIntent(msg); 2527 break; 2528 } 2529 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2530 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2531 break; 2532 } 2533 case EVENT_RELEASE_NETWORK_REQUEST: { 2534 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2535 break; 2536 } 2537 case EVENT_SET_ACCEPT_UNVALIDATED: { 2538 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2539 break; 2540 } 2541 case EVENT_PROMPT_UNVALIDATED: { 2542 handlePromptUnvalidated((Network) msg.obj); 2543 break; 2544 } 2545 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2546 handleMobileDataAlwaysOn(); 2547 break; 2548 } 2549 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2550 case NetworkAgent.CMD_START_PACKET_KEEPALIVE: { 2551 mKeepaliveTracker.handleStartKeepalive(msg); 2552 break; 2553 } 2554 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2555 case NetworkAgent.CMD_STOP_PACKET_KEEPALIVE: { 2556 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork((Network) msg.obj); 2557 int slot = msg.arg1; 2558 int reason = msg.arg2; 2559 mKeepaliveTracker.handleStopKeepalive(nai, slot, reason); 2560 break; 2561 } 2562 case EVENT_SYSTEM_READY: { 2563 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2564 nai.networkMonitor.systemReady = true; 2565 } 2566 break; 2567 } 2568 } 2569 } 2570 } 2571 2572 // javadoc from interface 2573 public int tether(String iface) { 2574 ConnectivityManager.enforceTetherChangePermission(mContext); 2575 if (isTetheringSupported()) { 2576 return mTethering.tether(iface); 2577 } else { 2578 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2579 } 2580 } 2581 2582 // javadoc from interface 2583 public int untether(String iface) { 2584 ConnectivityManager.enforceTetherChangePermission(mContext); 2585 2586 if (isTetheringSupported()) { 2587 return mTethering.untether(iface); 2588 } else { 2589 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2590 } 2591 } 2592 2593 // javadoc from interface 2594 public int getLastTetherError(String iface) { 2595 enforceTetherAccessPermission(); 2596 2597 if (isTetheringSupported()) { 2598 return mTethering.getLastTetherError(iface); 2599 } else { 2600 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2601 } 2602 } 2603 2604 // TODO - proper iface API for selection by property, inspection, etc 2605 public String[] getTetherableUsbRegexs() { 2606 enforceTetherAccessPermission(); 2607 if (isTetheringSupported()) { 2608 return mTethering.getTetherableUsbRegexs(); 2609 } else { 2610 return new String[0]; 2611 } 2612 } 2613 2614 public String[] getTetherableWifiRegexs() { 2615 enforceTetherAccessPermission(); 2616 if (isTetheringSupported()) { 2617 return mTethering.getTetherableWifiRegexs(); 2618 } else { 2619 return new String[0]; 2620 } 2621 } 2622 2623 public String[] getTetherableBluetoothRegexs() { 2624 enforceTetherAccessPermission(); 2625 if (isTetheringSupported()) { 2626 return mTethering.getTetherableBluetoothRegexs(); 2627 } else { 2628 return new String[0]; 2629 } 2630 } 2631 2632 public int setUsbTethering(boolean enable) { 2633 ConnectivityManager.enforceTetherChangePermission(mContext); 2634 if (isTetheringSupported()) { 2635 return mTethering.setUsbTethering(enable); 2636 } else { 2637 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2638 } 2639 } 2640 2641 // TODO - move iface listing, queries, etc to new module 2642 // javadoc from interface 2643 public String[] getTetherableIfaces() { 2644 enforceTetherAccessPermission(); 2645 return mTethering.getTetherableIfaces(); 2646 } 2647 2648 public String[] getTetheredIfaces() { 2649 enforceTetherAccessPermission(); 2650 return mTethering.getTetheredIfaces(); 2651 } 2652 2653 public String[] getTetheringErroredIfaces() { 2654 enforceTetherAccessPermission(); 2655 return mTethering.getErroredIfaces(); 2656 } 2657 2658 public String[] getTetheredDhcpRanges() { 2659 enforceConnectivityInternalPermission(); 2660 return mTethering.getTetheredDhcpRanges(); 2661 } 2662 2663 // if ro.tether.denied = true we default to no tethering 2664 // gservices could set the secure setting to 1 though to enable it on a build where it 2665 // had previously been turned off. 2666 public boolean isTetheringSupported() { 2667 enforceTetherAccessPermission(); 2668 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2669 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2670 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2671 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2672 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2673 mTethering.getTetherableWifiRegexs().length != 0 || 2674 mTethering.getTetherableBluetoothRegexs().length != 0) && 2675 mTethering.getUpstreamIfaceTypes().length != 0); 2676 } 2677 2678 // Called when we lose the default network and have no replacement yet. 2679 // This will automatically be cleared after X seconds or a new default network 2680 // becomes CONNECTED, whichever happens first. The timer is started by the 2681 // first caller and not restarted by subsequent callers. 2682 private void requestNetworkTransitionWakelock(String forWhom) { 2683 int serialNum = 0; 2684 synchronized (this) { 2685 if (mNetTransitionWakeLock.isHeld()) return; 2686 serialNum = ++mNetTransitionWakeLockSerialNumber; 2687 mNetTransitionWakeLock.acquire(); 2688 mNetTransitionWakeLockCausedBy = forWhom; 2689 } 2690 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2691 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2692 mNetTransitionWakeLockTimeout); 2693 return; 2694 } 2695 2696 // 100 percent is full good, 0 is full bad. 2697 public void reportInetCondition(int networkType, int percentage) { 2698 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2699 if (nai == null) return; 2700 reportNetworkConnectivity(nai.network, percentage > 50); 2701 } 2702 2703 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2704 enforceAccessPermission(); 2705 enforceInternetPermission(); 2706 2707 NetworkAgentInfo nai; 2708 if (network == null) { 2709 nai = getDefaultNetwork(); 2710 } else { 2711 nai = getNetworkAgentInfoForNetwork(network); 2712 } 2713 if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || 2714 nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { 2715 return; 2716 } 2717 // Revalidate if the app report does not match our current validated state. 2718 if (hasConnectivity == nai.lastValidated) return; 2719 final int uid = Binder.getCallingUid(); 2720 if (DBG) { 2721 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2722 ") by " + uid); 2723 } 2724 synchronized (nai) { 2725 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2726 // which isn't meant to work on uncreated networks. 2727 if (!nai.created) return; 2728 2729 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2730 2731 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2732 } 2733 } 2734 2735 private ProxyInfo getDefaultProxy() { 2736 // this information is already available as a world read/writable jvm property 2737 // so this API change wouldn't have a benifit. It also breaks the passing 2738 // of proxy info to all the JVMs. 2739 // enforceAccessPermission(); 2740 synchronized (mProxyLock) { 2741 ProxyInfo ret = mGlobalProxy; 2742 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2743 return ret; 2744 } 2745 } 2746 2747 public ProxyInfo getProxyForNetwork(Network network) { 2748 if (network == null) return getDefaultProxy(); 2749 final ProxyInfo globalProxy = getGlobalProxy(); 2750 if (globalProxy != null) return globalProxy; 2751 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2752 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2753 // caller may not have. 2754 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2755 if (nai == null) return null; 2756 synchronized (nai) { 2757 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2758 if (proxyInfo == null) return null; 2759 return new ProxyInfo(proxyInfo); 2760 } 2761 } 2762 2763 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2764 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2765 // proxy is null then there is no proxy in place). 2766 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2767 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2768 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2769 proxy = null; 2770 } 2771 return proxy; 2772 } 2773 2774 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2775 // better for determining if a new proxy broadcast is necessary: 2776 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2777 // avoid unnecessary broadcasts. 2778 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2779 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2780 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2781 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2782 // all set. 2783 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2784 a = canonicalizeProxyInfo(a); 2785 b = canonicalizeProxyInfo(b); 2786 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2787 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2788 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2789 } 2790 2791 public void setGlobalProxy(ProxyInfo proxyProperties) { 2792 enforceConnectivityInternalPermission(); 2793 2794 synchronized (mProxyLock) { 2795 if (proxyProperties == mGlobalProxy) return; 2796 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2797 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2798 2799 String host = ""; 2800 int port = 0; 2801 String exclList = ""; 2802 String pacFileUrl = ""; 2803 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2804 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2805 if (!proxyProperties.isValid()) { 2806 if (DBG) 2807 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2808 return; 2809 } 2810 mGlobalProxy = new ProxyInfo(proxyProperties); 2811 host = mGlobalProxy.getHost(); 2812 port = mGlobalProxy.getPort(); 2813 exclList = mGlobalProxy.getExclusionListAsString(); 2814 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2815 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2816 } 2817 } else { 2818 mGlobalProxy = null; 2819 } 2820 ContentResolver res = mContext.getContentResolver(); 2821 final long token = Binder.clearCallingIdentity(); 2822 try { 2823 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2824 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2825 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2826 exclList); 2827 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2828 } finally { 2829 Binder.restoreCallingIdentity(token); 2830 } 2831 2832 if (mGlobalProxy == null) { 2833 proxyProperties = mDefaultProxy; 2834 } 2835 sendProxyBroadcast(proxyProperties); 2836 } 2837 } 2838 2839 private void loadGlobalProxy() { 2840 ContentResolver res = mContext.getContentResolver(); 2841 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2842 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2843 String exclList = Settings.Global.getString(res, 2844 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2845 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2846 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2847 ProxyInfo proxyProperties; 2848 if (!TextUtils.isEmpty(pacFileUrl)) { 2849 proxyProperties = new ProxyInfo(pacFileUrl); 2850 } else { 2851 proxyProperties = new ProxyInfo(host, port, exclList); 2852 } 2853 if (!proxyProperties.isValid()) { 2854 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2855 return; 2856 } 2857 2858 synchronized (mProxyLock) { 2859 mGlobalProxy = proxyProperties; 2860 } 2861 } 2862 } 2863 2864 public ProxyInfo getGlobalProxy() { 2865 // this information is already available as a world read/writable jvm property 2866 // so this API change wouldn't have a benifit. It also breaks the passing 2867 // of proxy info to all the JVMs. 2868 // enforceAccessPermission(); 2869 synchronized (mProxyLock) { 2870 return mGlobalProxy; 2871 } 2872 } 2873 2874 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2875 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2876 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2877 proxy = null; 2878 } 2879 synchronized (mProxyLock) { 2880 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2881 if (mDefaultProxy == proxy) return; // catches repeated nulls 2882 if (proxy != null && !proxy.isValid()) { 2883 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2884 return; 2885 } 2886 2887 // This call could be coming from the PacManager, containing the port of the local 2888 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2889 // global (to get the correct local port), and send a broadcast. 2890 // TODO: Switch PacManager to have its own message to send back rather than 2891 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2892 if ((mGlobalProxy != null) && (proxy != null) 2893 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2894 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2895 mGlobalProxy = proxy; 2896 sendProxyBroadcast(mGlobalProxy); 2897 return; 2898 } 2899 mDefaultProxy = proxy; 2900 2901 if (mGlobalProxy != null) return; 2902 if (!mDefaultProxyDisabled) { 2903 sendProxyBroadcast(proxy); 2904 } 2905 } 2906 } 2907 2908 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2909 // This method gets called when any network changes proxy, but the broadcast only ever contains 2910 // the default proxy (even if it hasn't changed). 2911 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2912 // world where an app might be bound to a non-default network. 2913 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2914 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2915 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2916 2917 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2918 sendProxyBroadcast(getDefaultProxy()); 2919 } 2920 } 2921 2922 private void handleDeprecatedGlobalHttpProxy() { 2923 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2924 Settings.Global.HTTP_PROXY); 2925 if (!TextUtils.isEmpty(proxy)) { 2926 String data[] = proxy.split(":"); 2927 if (data.length == 0) { 2928 return; 2929 } 2930 2931 String proxyHost = data[0]; 2932 int proxyPort = 8080; 2933 if (data.length > 1) { 2934 try { 2935 proxyPort = Integer.parseInt(data[1]); 2936 } catch (NumberFormatException e) { 2937 return; 2938 } 2939 } 2940 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2941 setGlobalProxy(p); 2942 } 2943 } 2944 2945 private void sendProxyBroadcast(ProxyInfo proxy) { 2946 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2947 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2948 if (DBG) log("sending Proxy Broadcast for " + proxy); 2949 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2950 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2951 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2952 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2953 final long ident = Binder.clearCallingIdentity(); 2954 try { 2955 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2956 } finally { 2957 Binder.restoreCallingIdentity(ident); 2958 } 2959 } 2960 2961 private static class SettingsObserver extends ContentObserver { 2962 final private HashMap<Uri, Integer> mUriEventMap; 2963 final private Context mContext; 2964 final private Handler mHandler; 2965 2966 SettingsObserver(Context context, Handler handler) { 2967 super(null); 2968 mUriEventMap = new HashMap<Uri, Integer>(); 2969 mContext = context; 2970 mHandler = handler; 2971 } 2972 2973 void observe(Uri uri, int what) { 2974 mUriEventMap.put(uri, what); 2975 final ContentResolver resolver = mContext.getContentResolver(); 2976 resolver.registerContentObserver(uri, false, this); 2977 } 2978 2979 @Override 2980 public void onChange(boolean selfChange) { 2981 Slog.wtf(TAG, "Should never be reached."); 2982 } 2983 2984 @Override 2985 public void onChange(boolean selfChange, Uri uri) { 2986 final Integer what = mUriEventMap.get(uri); 2987 if (what != null) { 2988 mHandler.obtainMessage(what.intValue()).sendToTarget(); 2989 } else { 2990 loge("No matching event to send for URI=" + uri); 2991 } 2992 } 2993 } 2994 2995 private static void log(String s) { 2996 Slog.d(TAG, s); 2997 } 2998 2999 private static void loge(String s) { 3000 Slog.e(TAG, s); 3001 } 3002 3003 private static <T> T checkNotNull(T value, String message) { 3004 if (value == null) { 3005 throw new NullPointerException(message); 3006 } 3007 return value; 3008 } 3009 3010 /** 3011 * Prepare for a VPN application. 3012 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3013 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3014 * 3015 * @param oldPackage Package name of the application which currently controls VPN, which will 3016 * be replaced. If there is no such application, this should should either be 3017 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3018 * @param newPackage Package name of the application which should gain control of VPN, or 3019 * {@code null} to disable. 3020 * @param userId User for whom to prepare the new VPN. 3021 * 3022 * @hide 3023 */ 3024 @Override 3025 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3026 int userId) { 3027 enforceCrossUserPermission(userId); 3028 throwIfLockdownEnabled(); 3029 3030 synchronized(mVpns) { 3031 Vpn vpn = mVpns.get(userId); 3032 if (vpn != null) { 3033 return vpn.prepare(oldPackage, newPackage); 3034 } else { 3035 return false; 3036 } 3037 } 3038 } 3039 3040 /** 3041 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3042 * This method is used by system-privileged apps. 3043 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3044 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3045 * 3046 * @param packageName The package for which authorization state should change. 3047 * @param userId User for whom {@code packageName} is installed. 3048 * @param authorized {@code true} if this app should be able to start a VPN connection without 3049 * explicit user approval, {@code false} if not. 3050 * 3051 * @hide 3052 */ 3053 @Override 3054 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3055 enforceCrossUserPermission(userId); 3056 3057 synchronized(mVpns) { 3058 Vpn vpn = mVpns.get(userId); 3059 if (vpn != null) { 3060 vpn.setPackageAuthorization(packageName, authorized); 3061 } 3062 } 3063 } 3064 3065 /** 3066 * Configure a TUN interface and return its file descriptor. Parameters 3067 * are encoded and opaque to this class. This method is used by VpnBuilder 3068 * and not available in ConnectivityManager. Permissions are checked in 3069 * Vpn class. 3070 * @hide 3071 */ 3072 @Override 3073 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3074 throwIfLockdownEnabled(); 3075 int user = UserHandle.getUserId(Binder.getCallingUid()); 3076 synchronized(mVpns) { 3077 return mVpns.get(user).establish(config); 3078 } 3079 } 3080 3081 /** 3082 * Start legacy VPN, controlling native daemons as needed. Creates a 3083 * secondary thread to perform connection work, returning quickly. 3084 */ 3085 @Override 3086 public void startLegacyVpn(VpnProfile profile) { 3087 throwIfLockdownEnabled(); 3088 final LinkProperties egress = getActiveLinkProperties(); 3089 if (egress == null) { 3090 throw new IllegalStateException("Missing active network connection"); 3091 } 3092 int user = UserHandle.getUserId(Binder.getCallingUid()); 3093 synchronized(mVpns) { 3094 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3095 } 3096 } 3097 3098 /** 3099 * Return the information of the ongoing legacy VPN. This method is used 3100 * by VpnSettings and not available in ConnectivityManager. Permissions 3101 * are checked in Vpn class. 3102 */ 3103 @Override 3104 public LegacyVpnInfo getLegacyVpnInfo(int userId) { 3105 enforceCrossUserPermission(userId); 3106 if (mLockdownEnabled) { 3107 return null; 3108 } 3109 3110 synchronized(mVpns) { 3111 return mVpns.get(userId).getLegacyVpnInfo(); 3112 } 3113 } 3114 3115 /** 3116 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3117 * and not available in ConnectivityManager. 3118 */ 3119 @Override 3120 public VpnInfo[] getAllVpnInfo() { 3121 enforceConnectivityInternalPermission(); 3122 if (mLockdownEnabled) { 3123 return new VpnInfo[0]; 3124 } 3125 3126 synchronized(mVpns) { 3127 List<VpnInfo> infoList = new ArrayList<>(); 3128 for (int i = 0; i < mVpns.size(); i++) { 3129 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3130 if (info != null) { 3131 infoList.add(info); 3132 } 3133 } 3134 return infoList.toArray(new VpnInfo[infoList.size()]); 3135 } 3136 } 3137 3138 /** 3139 * @return VPN information for accounting, or null if we can't retrieve all required 3140 * information, e.g primary underlying iface. 3141 */ 3142 @Nullable 3143 private VpnInfo createVpnInfo(Vpn vpn) { 3144 VpnInfo info = vpn.getVpnInfo(); 3145 if (info == null) { 3146 return null; 3147 } 3148 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3149 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3150 // the underlyingNetworks list. 3151 if (underlyingNetworks == null) { 3152 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3153 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3154 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3155 } 3156 } else if (underlyingNetworks.length > 0) { 3157 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3158 if (linkProperties != null) { 3159 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3160 } 3161 } 3162 return info.primaryUnderlyingIface == null ? null : info; 3163 } 3164 3165 /** 3166 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3167 * VpnDialogs and not available in ConnectivityManager. 3168 * Permissions are checked in Vpn class. 3169 * @hide 3170 */ 3171 @Override 3172 public VpnConfig getVpnConfig(int userId) { 3173 enforceCrossUserPermission(userId); 3174 synchronized(mVpns) { 3175 Vpn vpn = mVpns.get(userId); 3176 if (vpn != null) { 3177 return vpn.getVpnConfig(); 3178 } else { 3179 return null; 3180 } 3181 } 3182 } 3183 3184 @Override 3185 public boolean updateLockdownVpn() { 3186 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3187 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3188 return false; 3189 } 3190 3191 // Tear down existing lockdown if profile was removed 3192 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3193 if (mLockdownEnabled) { 3194 if (!mKeyStore.isUnlocked()) { 3195 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3196 return false; 3197 } 3198 3199 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3200 final VpnProfile profile = VpnProfile.decode( 3201 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3202 int user = UserHandle.getUserId(Binder.getCallingUid()); 3203 synchronized(mVpns) { 3204 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3205 profile)); 3206 } 3207 } else { 3208 setLockdownTracker(null); 3209 } 3210 3211 return true; 3212 } 3213 3214 /** 3215 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3216 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3217 */ 3218 private void setLockdownTracker(LockdownVpnTracker tracker) { 3219 // Shutdown any existing tracker 3220 final LockdownVpnTracker existing = mLockdownTracker; 3221 mLockdownTracker = null; 3222 if (existing != null) { 3223 existing.shutdown(); 3224 } 3225 3226 try { 3227 if (tracker != null) { 3228 mNetd.setFirewallEnabled(true); 3229 mNetd.setFirewallInterfaceRule("lo", true); 3230 mLockdownTracker = tracker; 3231 mLockdownTracker.init(); 3232 } else { 3233 mNetd.setFirewallEnabled(false); 3234 } 3235 } catch (RemoteException e) { 3236 // ignored; NMS lives inside system_server 3237 } 3238 } 3239 3240 private void throwIfLockdownEnabled() { 3241 if (mLockdownEnabled) { 3242 throw new IllegalStateException("Unavailable in lockdown mode"); 3243 } 3244 } 3245 3246 @Override 3247 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3248 // TODO: Remove? Any reason to trigger a provisioning check? 3249 return -1; 3250 } 3251 3252 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3253 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3254 3255 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3256 if (DBG) { 3257 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3258 + " action=" + action); 3259 } 3260 Intent intent = new Intent(action); 3261 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3262 // Concatenate the range of types onto the range of NetIDs. 3263 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3264 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3265 networkType, null, pendingIntent, false); 3266 } 3267 3268 /** 3269 * Show or hide network provisioning notifications. 3270 * 3271 * We use notifications for two purposes: to notify that a network requires sign in 3272 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3273 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3274 * particular network we can display the notification type that was most recently requested. 3275 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3276 * might first display NO_INTERNET, and then when the captive portal check completes, display 3277 * SIGN_IN. 3278 * 3279 * @param id an identifier that uniquely identifies this notification. This must match 3280 * between show and hide calls. We use the NetID value but for legacy callers 3281 * we concatenate the range of types with the range of NetIDs. 3282 */ 3283 private void setProvNotificationVisibleIntent(boolean visible, int id, 3284 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent, 3285 boolean highPriority) { 3286 if (DBG) { 3287 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3288 + " networkType=" + getNetworkTypeName(networkType) 3289 + " extraInfo=" + extraInfo + " highPriority=" + highPriority); 3290 } 3291 3292 Resources r = Resources.getSystem(); 3293 NotificationManager notificationManager = (NotificationManager) mContext 3294 .getSystemService(Context.NOTIFICATION_SERVICE); 3295 3296 if (visible) { 3297 CharSequence title; 3298 CharSequence details; 3299 int icon; 3300 if (notifyType == NotificationType.NO_INTERNET && 3301 networkType == ConnectivityManager.TYPE_WIFI) { 3302 title = r.getString(R.string.wifi_no_internet, 0); 3303 details = r.getString(R.string.wifi_no_internet_detailed); 3304 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3305 } else if (notifyType == NotificationType.SIGN_IN) { 3306 switch (networkType) { 3307 case ConnectivityManager.TYPE_WIFI: 3308 title = r.getString(R.string.wifi_available_sign_in, 0); 3309 details = r.getString(R.string.network_available_sign_in_detailed, 3310 extraInfo); 3311 icon = R.drawable.stat_notify_wifi_in_range; 3312 break; 3313 case ConnectivityManager.TYPE_MOBILE: 3314 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3315 title = r.getString(R.string.network_available_sign_in, 0); 3316 // TODO: Change this to pull from NetworkInfo once a printable 3317 // name has been added to it 3318 details = mTelephonyManager.getNetworkOperatorName(); 3319 icon = R.drawable.stat_notify_rssi_in_range; 3320 break; 3321 default: 3322 title = r.getString(R.string.network_available_sign_in, 0); 3323 details = r.getString(R.string.network_available_sign_in_detailed, 3324 extraInfo); 3325 icon = R.drawable.stat_notify_rssi_in_range; 3326 break; 3327 } 3328 } else { 3329 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3330 + getNetworkTypeName(networkType)); 3331 return; 3332 } 3333 3334 Notification notification = new Notification.Builder(mContext) 3335 .setWhen(0) 3336 .setSmallIcon(icon) 3337 .setAutoCancel(true) 3338 .setTicker(title) 3339 .setColor(mContext.getColor( 3340 com.android.internal.R.color.system_notification_accent_color)) 3341 .setContentTitle(title) 3342 .setContentText(details) 3343 .setContentIntent(intent) 3344 .setLocalOnly(true) 3345 .setPriority(highPriority ? 3346 Notification.PRIORITY_HIGH : 3347 Notification.PRIORITY_DEFAULT) 3348 .setDefaults(Notification.DEFAULT_ALL) 3349 .setOnlyAlertOnce(true) 3350 .build(); 3351 3352 try { 3353 notificationManager.notify(NOTIFICATION_ID, id, notification); 3354 } catch (NullPointerException npe) { 3355 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3356 npe.printStackTrace(); 3357 } 3358 } else { 3359 try { 3360 notificationManager.cancel(NOTIFICATION_ID, id); 3361 } catch (NullPointerException npe) { 3362 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3363 npe.printStackTrace(); 3364 } 3365 } 3366 } 3367 3368 /** Location to an updatable file listing carrier provisioning urls. 3369 * An example: 3370 * 3371 * <?xml version="1.0" encoding="utf-8"?> 3372 * <provisioningUrls> 3373 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3374 * </provisioningUrls> 3375 */ 3376 private static final String PROVISIONING_URL_PATH = 3377 "/data/misc/radio/provisioning_urls.xml"; 3378 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3379 3380 /** XML tag for root element. */ 3381 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3382 /** XML tag for individual url */ 3383 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3384 /** XML attribute for mcc */ 3385 private static final String ATTR_MCC = "mcc"; 3386 /** XML attribute for mnc */ 3387 private static final String ATTR_MNC = "mnc"; 3388 3389 private String getProvisioningUrlBaseFromFile() { 3390 FileReader fileReader = null; 3391 XmlPullParser parser = null; 3392 Configuration config = mContext.getResources().getConfiguration(); 3393 3394 try { 3395 fileReader = new FileReader(mProvisioningUrlFile); 3396 parser = Xml.newPullParser(); 3397 parser.setInput(fileReader); 3398 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3399 3400 while (true) { 3401 XmlUtils.nextElement(parser); 3402 3403 String element = parser.getName(); 3404 if (element == null) break; 3405 3406 if (element.equals(TAG_PROVISIONING_URL)) { 3407 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3408 try { 3409 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3410 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3411 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3412 parser.next(); 3413 if (parser.getEventType() == XmlPullParser.TEXT) { 3414 return parser.getText(); 3415 } 3416 } 3417 } 3418 } catch (NumberFormatException e) { 3419 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3420 } 3421 } 3422 } 3423 return null; 3424 } catch (FileNotFoundException e) { 3425 loge("Carrier Provisioning Urls file not found"); 3426 } catch (XmlPullParserException e) { 3427 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3428 } catch (IOException e) { 3429 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3430 } finally { 3431 if (fileReader != null) { 3432 try { 3433 fileReader.close(); 3434 } catch (IOException e) {} 3435 } 3436 } 3437 return null; 3438 } 3439 3440 @Override 3441 public String getMobileProvisioningUrl() { 3442 enforceConnectivityInternalPermission(); 3443 String url = getProvisioningUrlBaseFromFile(); 3444 if (TextUtils.isEmpty(url)) { 3445 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3446 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3447 } else { 3448 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3449 } 3450 // populate the iccid, imei and phone number in the provisioning url. 3451 if (!TextUtils.isEmpty(url)) { 3452 String phoneNumber = mTelephonyManager.getLine1Number(); 3453 if (TextUtils.isEmpty(phoneNumber)) { 3454 phoneNumber = "0000000000"; 3455 } 3456 url = String.format(url, 3457 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3458 mTelephonyManager.getDeviceId() /* IMEI */, 3459 phoneNumber /* Phone numer */); 3460 } 3461 3462 return url; 3463 } 3464 3465 @Override 3466 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3467 String action) { 3468 enforceConnectivityInternalPermission(); 3469 final long ident = Binder.clearCallingIdentity(); 3470 try { 3471 setProvNotificationVisible(visible, networkType, action); 3472 } finally { 3473 Binder.restoreCallingIdentity(ident); 3474 } 3475 } 3476 3477 @Override 3478 public void setAirplaneMode(boolean enable) { 3479 enforceConnectivityInternalPermission(); 3480 final long ident = Binder.clearCallingIdentity(); 3481 try { 3482 final ContentResolver cr = mContext.getContentResolver(); 3483 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3484 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3485 intent.putExtra("state", enable); 3486 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3487 } finally { 3488 Binder.restoreCallingIdentity(ident); 3489 } 3490 } 3491 3492 private void onUserStart(int userId) { 3493 synchronized(mVpns) { 3494 Vpn userVpn = mVpns.get(userId); 3495 if (userVpn != null) { 3496 loge("Starting user already has a VPN"); 3497 return; 3498 } 3499 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3500 mVpns.put(userId, userVpn); 3501 } 3502 } 3503 3504 private void onUserStop(int userId) { 3505 synchronized(mVpns) { 3506 Vpn userVpn = mVpns.get(userId); 3507 if (userVpn == null) { 3508 loge("Stopping user has no VPN"); 3509 return; 3510 } 3511 mVpns.delete(userId); 3512 } 3513 } 3514 3515 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3516 @Override 3517 public void onReceive(Context context, Intent intent) { 3518 final String action = intent.getAction(); 3519 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3520 if (userId == UserHandle.USER_NULL) return; 3521 3522 if (Intent.ACTION_USER_STARTING.equals(action)) { 3523 onUserStart(userId); 3524 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3525 onUserStop(userId); 3526 } 3527 } 3528 }; 3529 3530 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3531 new HashMap<Messenger, NetworkFactoryInfo>(); 3532 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3533 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3534 3535 private static class NetworkFactoryInfo { 3536 public final String name; 3537 public final Messenger messenger; 3538 public final AsyncChannel asyncChannel; 3539 3540 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3541 this.name = name; 3542 this.messenger = messenger; 3543 this.asyncChannel = asyncChannel; 3544 } 3545 } 3546 3547 /** 3548 * Tracks info about the requester. 3549 * Also used to notice when the calling process dies so we can self-expire 3550 */ 3551 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3552 static final boolean REQUEST = true; 3553 static final boolean LISTEN = false; 3554 3555 final NetworkRequest request; 3556 final PendingIntent mPendingIntent; 3557 boolean mPendingIntentSent; 3558 private final IBinder mBinder; 3559 final int mPid; 3560 final int mUid; 3561 final Messenger messenger; 3562 final boolean isRequest; 3563 3564 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3565 request = r; 3566 mPendingIntent = pi; 3567 messenger = null; 3568 mBinder = null; 3569 mPid = getCallingPid(); 3570 mUid = getCallingUid(); 3571 this.isRequest = isRequest; 3572 } 3573 3574 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3575 super(); 3576 messenger = m; 3577 request = r; 3578 mBinder = binder; 3579 mPid = getCallingPid(); 3580 mUid = getCallingUid(); 3581 this.isRequest = isRequest; 3582 mPendingIntent = null; 3583 3584 try { 3585 mBinder.linkToDeath(this, 0); 3586 } catch (RemoteException e) { 3587 binderDied(); 3588 } 3589 } 3590 3591 void unlinkDeathRecipient() { 3592 if (mBinder != null) { 3593 mBinder.unlinkToDeath(this, 0); 3594 } 3595 } 3596 3597 public void binderDied() { 3598 log("ConnectivityService NetworkRequestInfo binderDied(" + 3599 request + ", " + mBinder + ")"); 3600 releaseNetworkRequest(request); 3601 } 3602 3603 public String toString() { 3604 return (isRequest ? "Request" : "Listen") + 3605 " from uid/pid:" + mUid + "/" + mPid + 3606 " for " + request + 3607 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3608 } 3609 } 3610 3611 private void ensureRequestableCapabilities(NetworkCapabilities networkCapabilities) { 3612 final String badCapability = networkCapabilities.describeFirstNonRequestableCapability(); 3613 if (badCapability != null) { 3614 throw new IllegalArgumentException("Cannot request network with " + badCapability); 3615 } 3616 } 3617 3618 private ArrayList<Integer> getSignalStrengthThresholds(NetworkAgentInfo nai) { 3619 final SortedSet<Integer> thresholds = new TreeSet(); 3620 synchronized (nai) { 3621 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3622 if (nri.request.networkCapabilities.hasSignalStrength() && 3623 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 3624 thresholds.add(nri.request.networkCapabilities.getSignalStrength()); 3625 } 3626 } 3627 } 3628 return new ArrayList<Integer>(thresholds); 3629 } 3630 3631 private void updateSignalStrengthThresholds(NetworkAgentInfo nai) { 3632 Bundle thresholds = new Bundle(); 3633 thresholds.putIntegerArrayList("thresholds", getSignalStrengthThresholds(nai)); 3634 nai.asyncChannel.sendMessage( 3635 android.net.NetworkAgent.CMD_SET_SIGNAL_STRENGTH_THRESHOLDS, 3636 0, 0, thresholds); 3637 } 3638 3639 @Override 3640 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3641 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3642 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3643 enforceNetworkRequestPermissions(networkCapabilities); 3644 enforceMeteredApnPolicy(networkCapabilities); 3645 ensureRequestableCapabilities(networkCapabilities); 3646 3647 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3648 throw new IllegalArgumentException("Bad timeout specified"); 3649 } 3650 3651 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3652 nextNetworkRequestId()); 3653 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3654 NetworkRequestInfo.REQUEST); 3655 if (DBG) log("requestNetwork for " + nri); 3656 3657 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3658 if (timeoutMs > 0) { 3659 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3660 nri), timeoutMs); 3661 } 3662 return networkRequest; 3663 } 3664 3665 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3666 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3667 enforceConnectivityInternalPermission(); 3668 } else { 3669 enforceChangePermission(); 3670 } 3671 } 3672 3673 @Override 3674 public boolean requestBandwidthUpdate(Network network) { 3675 enforceAccessPermission(); 3676 NetworkAgentInfo nai = null; 3677 if (network == null) { 3678 return false; 3679 } 3680 synchronized (mNetworkForNetId) { 3681 nai = mNetworkForNetId.get(network.netId); 3682 } 3683 if (nai != null) { 3684 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3685 return true; 3686 } 3687 return false; 3688 } 3689 3690 3691 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3692 // if UID is restricted, don't allow them to bring up metered APNs 3693 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3694 final int uidRules; 3695 final int uid = Binder.getCallingUid(); 3696 synchronized(mRulesLock) { 3697 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3698 } 3699 if ((uidRules & (RULE_REJECT_METERED | RULE_REJECT_ALL)) != 0) { 3700 // we could silently fail or we can filter the available nets to only give 3701 // them those they have access to. Chose the more useful 3702 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3703 } 3704 } 3705 } 3706 3707 @Override 3708 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3709 PendingIntent operation) { 3710 checkNotNull(operation, "PendingIntent cannot be null."); 3711 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3712 enforceNetworkRequestPermissions(networkCapabilities); 3713 enforceMeteredApnPolicy(networkCapabilities); 3714 ensureRequestableCapabilities(networkCapabilities); 3715 3716 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3717 nextNetworkRequestId()); 3718 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3719 NetworkRequestInfo.REQUEST); 3720 if (DBG) log("pendingRequest for " + nri); 3721 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3722 nri)); 3723 return networkRequest; 3724 } 3725 3726 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3727 mHandler.sendMessageDelayed( 3728 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3729 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3730 } 3731 3732 @Override 3733 public void releasePendingNetworkRequest(PendingIntent operation) { 3734 checkNotNull(operation, "PendingIntent cannot be null."); 3735 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3736 getCallingUid(), 0, operation)); 3737 } 3738 3739 // In order to implement the compatibility measure for pre-M apps that call 3740 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3741 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3742 // This ensures it has permission to do so. 3743 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3744 if (nc == null) { 3745 return false; 3746 } 3747 int[] transportTypes = nc.getTransportTypes(); 3748 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3749 return false; 3750 } 3751 try { 3752 mContext.enforceCallingOrSelfPermission( 3753 android.Manifest.permission.ACCESS_WIFI_STATE, 3754 "ConnectivityService"); 3755 } catch (SecurityException e) { 3756 return false; 3757 } 3758 return true; 3759 } 3760 3761 @Override 3762 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3763 Messenger messenger, IBinder binder) { 3764 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3765 enforceAccessPermission(); 3766 } 3767 3768 NetworkRequest networkRequest = new NetworkRequest( 3769 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3770 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3771 NetworkRequestInfo.LISTEN); 3772 if (DBG) log("listenForNetwork for " + nri); 3773 3774 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3775 return networkRequest; 3776 } 3777 3778 @Override 3779 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3780 PendingIntent operation) { 3781 checkNotNull(operation, "PendingIntent cannot be null."); 3782 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3783 enforceAccessPermission(); 3784 } 3785 3786 NetworkRequest networkRequest = new NetworkRequest( 3787 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3788 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3789 NetworkRequestInfo.LISTEN); 3790 if (DBG) log("pendingListenForNetwork for " + nri); 3791 3792 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3793 } 3794 3795 @Override 3796 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3797 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3798 0, networkRequest)); 3799 } 3800 3801 @Override 3802 public void registerNetworkFactory(Messenger messenger, String name) { 3803 enforceConnectivityInternalPermission(); 3804 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3805 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3806 } 3807 3808 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3809 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3810 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3811 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3812 } 3813 3814 @Override 3815 public void unregisterNetworkFactory(Messenger messenger) { 3816 enforceConnectivityInternalPermission(); 3817 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3818 } 3819 3820 private void handleUnregisterNetworkFactory(Messenger messenger) { 3821 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3822 if (nfi == null) { 3823 loge("Failed to find Messenger in unregisterNetworkFactory"); 3824 return; 3825 } 3826 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3827 } 3828 3829 /** 3830 * NetworkAgentInfo supporting a request by requestId. 3831 * These have already been vetted (their Capabilities satisfy the request) 3832 * and the are the highest scored network available. 3833 * the are keyed off the Requests requestId. 3834 */ 3835 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 3836 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3837 new SparseArray<NetworkAgentInfo>(); 3838 3839 // NOTE: Accessed on multiple threads, must be synchronized on itself. 3840 @GuardedBy("mNetworkForNetId") 3841 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3842 new SparseArray<NetworkAgentInfo>(); 3843 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 3844 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 3845 // there may not be a strict 1:1 correlation between the two. 3846 @GuardedBy("mNetworkForNetId") 3847 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 3848 3849 // NetworkAgentInfo keyed off its connecting messenger 3850 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3851 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 3852 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3853 new HashMap<Messenger, NetworkAgentInfo>(); 3854 3855 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3856 private final NetworkRequest mDefaultRequest; 3857 3858 // Request used to optionally keep mobile data active even when higher 3859 // priority networks like Wi-Fi are active. 3860 private final NetworkRequest mDefaultMobileDataRequest; 3861 3862 private NetworkAgentInfo getDefaultNetwork() { 3863 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3864 } 3865 3866 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3867 return nai == getDefaultNetwork(); 3868 } 3869 3870 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3871 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3872 int currentScore, NetworkMisc networkMisc) { 3873 enforceConnectivityInternalPermission(); 3874 3875 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3876 // satisfies mDefaultRequest. 3877 final NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3878 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 3879 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 3880 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest, this); 3881 synchronized (this) { 3882 nai.networkMonitor.systemReady = mSystemReady; 3883 } 3884 addValidationLogs(nai.networkMonitor.getValidationLogs(), nai.network); 3885 if (DBG) log("registerNetworkAgent " + nai); 3886 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3887 return nai.network.netId; 3888 } 3889 3890 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3891 if (VDBG) log("Got NetworkAgent Messenger"); 3892 mNetworkAgentInfos.put(na.messenger, na); 3893 synchronized (mNetworkForNetId) { 3894 mNetworkForNetId.put(na.network.netId, na); 3895 } 3896 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3897 NetworkInfo networkInfo = na.networkInfo; 3898 na.networkInfo = null; 3899 updateNetworkInfo(na, networkInfo); 3900 } 3901 3902 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3903 LinkProperties newLp = networkAgent.linkProperties; 3904 int netId = networkAgent.network.netId; 3905 3906 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3907 // we do anything else, make sure its LinkProperties are accurate. 3908 if (networkAgent.clatd != null) { 3909 networkAgent.clatd.fixupLinkProperties(oldLp); 3910 } 3911 3912 updateInterfaces(newLp, oldLp, netId); 3913 updateMtu(newLp, oldLp); 3914 // TODO - figure out what to do for clat 3915// for (LinkProperties lp : newLp.getStackedLinks()) { 3916// updateMtu(lp, null); 3917// } 3918 updateTcpBufferSizes(networkAgent); 3919 3920 // TODO: deprecate and remove mDefaultDns when we can do so safely. See http://b/18327075 3921 // In L, we used it only when the network had Internet access but provided no DNS servers. 3922 // For now, just disable it, and if disabling it doesn't break things, remove it. 3923 // final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3924 // NET_CAPABILITY_INTERNET); 3925 final boolean useDefaultDns = false; 3926 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3927 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3928 3929 updateClat(newLp, oldLp, networkAgent); 3930 if (isDefaultNetwork(networkAgent)) { 3931 handleApplyDefaultProxy(newLp.getHttpProxy()); 3932 } else { 3933 updateProxy(newLp, oldLp, networkAgent); 3934 } 3935 // TODO - move this check to cover the whole function 3936 if (!Objects.equals(newLp, oldLp)) { 3937 notifyIfacesChanged(); 3938 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3939 } 3940 3941 mKeepaliveTracker.handleCheckKeepalivesStillValid(networkAgent); 3942 } 3943 3944 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3945 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3946 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3947 3948 if (!wasRunningClat && shouldRunClat) { 3949 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3950 nai.clatd.start(); 3951 } else if (wasRunningClat && !shouldRunClat) { 3952 nai.clatd.stop(); 3953 } 3954 } 3955 3956 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3957 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3958 if (oldLp != null) { 3959 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3960 } else if (newLp != null) { 3961 interfaceDiff.added = newLp.getAllInterfaceNames(); 3962 } 3963 for (String iface : interfaceDiff.added) { 3964 try { 3965 if (DBG) log("Adding iface " + iface + " to network " + netId); 3966 mNetd.addInterfaceToNetwork(iface, netId); 3967 } catch (Exception e) { 3968 loge("Exception adding interface: " + e); 3969 } 3970 } 3971 for (String iface : interfaceDiff.removed) { 3972 try { 3973 if (DBG) log("Removing iface " + iface + " from network " + netId); 3974 mNetd.removeInterfaceFromNetwork(iface, netId); 3975 } catch (Exception e) { 3976 loge("Exception removing interface: " + e); 3977 } 3978 } 3979 } 3980 3981 /** 3982 * Have netd update routes from oldLp to newLp. 3983 * @return true if routes changed between oldLp and newLp 3984 */ 3985 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3986 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3987 if (oldLp != null) { 3988 routeDiff = oldLp.compareAllRoutes(newLp); 3989 } else if (newLp != null) { 3990 routeDiff.added = newLp.getAllRoutes(); 3991 } 3992 3993 // add routes before removing old in case it helps with continuous connectivity 3994 3995 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3996 for (RouteInfo route : routeDiff.added) { 3997 if (route.hasGateway()) continue; 3998 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3999 try { 4000 mNetd.addRoute(netId, route); 4001 } catch (Exception e) { 4002 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 4003 loge("Exception in addRoute for non-gateway: " + e); 4004 } 4005 } 4006 } 4007 for (RouteInfo route : routeDiff.added) { 4008 if (route.hasGateway() == false) continue; 4009 if (DBG) log("Adding Route [" + route + "] to network " + netId); 4010 try { 4011 mNetd.addRoute(netId, route); 4012 } catch (Exception e) { 4013 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4014 loge("Exception in addRoute for gateway: " + e); 4015 } 4016 } 4017 } 4018 4019 for (RouteInfo route : routeDiff.removed) { 4020 if (DBG) log("Removing Route [" + route + "] from network " + netId); 4021 try { 4022 mNetd.removeRoute(netId, route); 4023 } catch (Exception e) { 4024 loge("Exception in removeRoute: " + e); 4025 } 4026 } 4027 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4028 } 4029 4030 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 4031 boolean flush, boolean useDefaultDns) { 4032 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 4033 Collection<InetAddress> dnses = newLp.getDnsServers(); 4034 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 4035 dnses = new ArrayList(); 4036 dnses.add(mDefaultDns); 4037 if (DBG) { 4038 loge("no dns provided for netId " + netId + ", so using defaults"); 4039 } 4040 } 4041 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 4042 try { 4043 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 4044 newLp.getDomains()); 4045 } catch (Exception e) { 4046 loge("Exception in setDnsServersForNetwork: " + e); 4047 } 4048 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 4049 if (defaultNai != null && defaultNai.network.netId == netId) { 4050 setDefaultDnsSystemProperties(dnses); 4051 } 4052 flushVmDnsCache(); 4053 } else if (flush) { 4054 try { 4055 mNetd.flushNetworkDnsCache(netId); 4056 } catch (Exception e) { 4057 loge("Exception in flushNetworkDnsCache: " + e); 4058 } 4059 flushVmDnsCache(); 4060 } 4061 } 4062 4063 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4064 int last = 0; 4065 for (InetAddress dns : dnses) { 4066 ++last; 4067 String key = "net.dns" + last; 4068 String value = dns.getHostAddress(); 4069 SystemProperties.set(key, value); 4070 } 4071 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4072 String key = "net.dns" + i; 4073 SystemProperties.set(key, ""); 4074 } 4075 mNumDnsEntries = last; 4076 } 4077 4078 /** 4079 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 4080 * augmented with any stateful capabilities implied from {@code networkAgent} 4081 * (e.g., validated status and captive portal status). 4082 * 4083 * @param nai the network having its capabilities updated. 4084 * @param networkCapabilities the new network capabilities. 4085 */ 4086 private void updateCapabilities(NetworkAgentInfo nai, NetworkCapabilities networkCapabilities) { 4087 // Don't modify caller's NetworkCapabilities. 4088 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4089 if (nai.lastValidated) { 4090 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4091 } else { 4092 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4093 } 4094 if (nai.lastCaptivePortalDetected) { 4095 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4096 } else { 4097 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4098 } 4099 if (!Objects.equals(nai.networkCapabilities, networkCapabilities)) { 4100 final int oldScore = nai.getCurrentScore(); 4101 if (nai.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) != 4102 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED)) { 4103 try { 4104 mNetd.setNetworkPermission(nai.network.netId, 4105 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) ? 4106 null : NetworkManagementService.PERMISSION_SYSTEM); 4107 } catch (RemoteException e) { 4108 loge("Exception in setNetworkPermission: " + e); 4109 } 4110 } 4111 synchronized (nai) { 4112 nai.networkCapabilities = networkCapabilities; 4113 } 4114 rematchAllNetworksAndRequests(nai, oldScore); 4115 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 4116 } 4117 } 4118 4119 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4120 for (int i = 0; i < nai.networkRequests.size(); i++) { 4121 NetworkRequest nr = nai.networkRequests.valueAt(i); 4122 // Don't send listening requests to factories. b/17393458 4123 if (!isRequest(nr)) continue; 4124 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4125 } 4126 } 4127 4128 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4129 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4130 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4131 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4132 networkRequest); 4133 } 4134 } 4135 4136 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4137 int notificationType) { 4138 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4139 Intent intent = new Intent(); 4140 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4141 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4142 nri.mPendingIntentSent = true; 4143 sendIntent(nri.mPendingIntent, intent); 4144 } 4145 // else not handled 4146 } 4147 4148 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4149 mPendingIntentWakeLock.acquire(); 4150 try { 4151 if (DBG) log("Sending " + pendingIntent); 4152 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4153 } catch (PendingIntent.CanceledException e) { 4154 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4155 mPendingIntentWakeLock.release(); 4156 releasePendingNetworkRequest(pendingIntent); 4157 } 4158 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4159 } 4160 4161 @Override 4162 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4163 String resultData, Bundle resultExtras) { 4164 if (DBG) log("Finished sending " + pendingIntent); 4165 mPendingIntentWakeLock.release(); 4166 // Release with a delay so the receiving client has an opportunity to put in its 4167 // own request. 4168 releasePendingNetworkRequestWithDelay(pendingIntent); 4169 } 4170 4171 private void callCallbackForRequest(NetworkRequestInfo nri, 4172 NetworkAgentInfo networkAgent, int notificationType) { 4173 if (nri.messenger == null) return; // Default request has no msgr 4174 Bundle bundle = new Bundle(); 4175 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4176 new NetworkRequest(nri.request)); 4177 Message msg = Message.obtain(); 4178 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4179 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4180 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4181 } 4182 switch (notificationType) { 4183 case ConnectivityManager.CALLBACK_LOSING: { 4184 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4185 break; 4186 } 4187 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4188 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4189 new NetworkCapabilities(networkAgent.networkCapabilities)); 4190 break; 4191 } 4192 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4193 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4194 new LinkProperties(networkAgent.linkProperties)); 4195 break; 4196 } 4197 } 4198 msg.what = notificationType; 4199 msg.setData(bundle); 4200 try { 4201 if (VDBG) { 4202 log("sending notification " + notifyTypeToName(notificationType) + 4203 " for " + nri.request); 4204 } 4205 nri.messenger.send(msg); 4206 } catch (RemoteException e) { 4207 // may occur naturally in the race of binder death. 4208 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4209 } 4210 } 4211 4212 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4213 for (int i = 0; i < nai.networkRequests.size(); i++) { 4214 NetworkRequest nr = nai.networkRequests.valueAt(i); 4215 // Ignore listening requests. 4216 if (!isRequest(nr)) continue; 4217 loge("Dead network still had at least " + nr); 4218 break; 4219 } 4220 nai.asyncChannel.disconnect(); 4221 } 4222 4223 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4224 if (oldNetwork == null) { 4225 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4226 return; 4227 } 4228 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4229 teardownUnneededNetwork(oldNetwork); 4230 } 4231 4232 private void makeDefault(NetworkAgentInfo newNetwork) { 4233 if (DBG) log("Switching to new default network: " + newNetwork); 4234 setupDataActivityTracking(newNetwork); 4235 try { 4236 mNetd.setDefaultNetId(newNetwork.network.netId); 4237 } catch (Exception e) { 4238 loge("Exception setting default network :" + e); 4239 } 4240 notifyLockdownVpn(newNetwork); 4241 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4242 updateTcpBufferSizes(newNetwork); 4243 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4244 } 4245 4246 // Handles a network appearing or improving its score. 4247 // 4248 // - Evaluates all current NetworkRequests that can be 4249 // satisfied by newNetwork, and reassigns to newNetwork 4250 // any such requests for which newNetwork is the best. 4251 // 4252 // - Lingers any validated Networks that as a result are no longer 4253 // needed. A network is needed if it is the best network for 4254 // one or more NetworkRequests, or if it is a VPN. 4255 // 4256 // - Tears down newNetwork if it just became validated 4257 // but turns out to be unneeded. 4258 // 4259 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4260 // networks that have no chance (i.e. even if validated) 4261 // of becoming the highest scoring network. 4262 // 4263 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4264 // it does not remove NetworkRequests that other Networks could better satisfy. 4265 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4266 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4267 // as it performs better by a factor of the number of Networks. 4268 // 4269 // @param newNetwork is the network to be matched against NetworkRequests. 4270 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4271 // performed to tear down unvalidated networks that have no chance (i.e. even if 4272 // validated) of becoming the highest scoring network. 4273 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, 4274 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4275 if (!newNetwork.created) return; 4276 boolean keep = newNetwork.isVPN(); 4277 boolean isNewDefault = false; 4278 NetworkAgentInfo oldDefaultNetwork = null; 4279 if (DBG) log("rematching " + newNetwork.name()); 4280 // Find and migrate to this Network any NetworkRequests for 4281 // which this network is now the best. 4282 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4283 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4284 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4285 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4286 final NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4287 final boolean satisfies = newNetwork.satisfies(nri.request); 4288 if (newNetwork == currentNetwork && satisfies) { 4289 if (VDBG) { 4290 log("Network " + newNetwork.name() + " was already satisfying" + 4291 " request " + nri.request.requestId + ". No change."); 4292 } 4293 keep = true; 4294 continue; 4295 } 4296 4297 // check if it satisfies the NetworkCapabilities 4298 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4299 if (satisfies) { 4300 if (!nri.isRequest) { 4301 // This is not a request, it's a callback listener. 4302 // Add it to newNetwork regardless of score. 4303 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4304 continue; 4305 } 4306 4307 // next check if it's better than any current network we're using for 4308 // this request 4309 if (VDBG) { 4310 log("currentScore = " + 4311 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4312 ", newScore = " + newNetwork.getCurrentScore()); 4313 } 4314 if (currentNetwork == null || 4315 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4316 if (currentNetwork != null) { 4317 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4318 currentNetwork.networkRequests.remove(nri.request.requestId); 4319 currentNetwork.networkLingered.add(nri.request); 4320 affectedNetworks.add(currentNetwork); 4321 } else { 4322 if (DBG) log(" accepting network in place of null"); 4323 } 4324 unlinger(newNetwork); 4325 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4326 if (!newNetwork.addRequest(nri.request)) { 4327 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4328 } 4329 addedRequests.add(nri); 4330 keep = true; 4331 // Tell NetworkFactories about the new score, so they can stop 4332 // trying to connect if they know they cannot match it. 4333 // TODO - this could get expensive if we have alot of requests for this 4334 // network. Think about if there is a way to reduce this. Push 4335 // netid->request mapping to each factory? 4336 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4337 if (mDefaultRequest.requestId == nri.request.requestId) { 4338 isNewDefault = true; 4339 oldDefaultNetwork = currentNetwork; 4340 } 4341 } 4342 } else if (newNetwork.networkRequests.get(nri.request.requestId) != null) { 4343 // If "newNetwork" is listed as satisfying "nri" but no longer satisfies "nri", 4344 // mark it as no longer satisfying "nri". Because networks are processed by 4345 // rematchAllNetworkAndRequests() in descending score order, "currentNetwork" will 4346 // match "newNetwork" before this loop will encounter a "currentNetwork" with higher 4347 // score than "newNetwork" and where "currentNetwork" no longer satisfies "nri". 4348 // This means this code doesn't have to handle the case where "currentNetwork" no 4349 // longer satisfies "nri" when "currentNetwork" does not equal "newNetwork". 4350 if (DBG) { 4351 log("Network " + newNetwork.name() + " stopped satisfying" + 4352 " request " + nri.request.requestId); 4353 } 4354 newNetwork.networkRequests.remove(nri.request.requestId); 4355 if (currentNetwork == newNetwork) { 4356 mNetworkForRequestId.remove(nri.request.requestId); 4357 sendUpdatedScoreToFactories(nri.request, 0); 4358 } else { 4359 if (nri.isRequest == true) { 4360 Slog.wtf(TAG, "BUG: Removing request " + nri.request.requestId + " from " + 4361 newNetwork.name() + 4362 " without updating mNetworkForRequestId or factories!"); 4363 } 4364 } 4365 // TODO: technically, sending CALLBACK_LOST here is 4366 // incorrect if nri is a request (not a listen) and there 4367 // is a replacement network currently connected that can 4368 // satisfy it. However, the only capability that can both 4369 // a) be requested and b) change is NET_CAPABILITY_TRUSTED, 4370 // so this code is only incorrect for a network that loses 4371 // the TRUSTED capability, which is a rare case. 4372 callCallbackForRequest(nri, newNetwork, ConnectivityManager.CALLBACK_LOST); 4373 } 4374 } 4375 // Linger any networks that are no longer needed. 4376 for (NetworkAgentInfo nai : affectedNetworks) { 4377 if (nai.lingering) { 4378 // Already lingered. Nothing to do. This can only happen if "nai" is in 4379 // "affectedNetworks" twice. The reasoning being that to get added to 4380 // "affectedNetworks", "nai" must have been satisfying a NetworkRequest 4381 // (i.e. not lingered) so it could have only been lingered by this loop. 4382 // unneeded(nai) will be false and we'll call unlinger() below which would 4383 // be bad, so handle it here. 4384 } else if (unneeded(nai)) { 4385 linger(nai); 4386 } else { 4387 // Clear nai.networkLingered we might have added above. 4388 unlinger(nai); 4389 } 4390 } 4391 if (isNewDefault) { 4392 // Notify system services that this network is up. 4393 makeDefault(newNetwork); 4394 synchronized (ConnectivityService.this) { 4395 // have a new default network, release the transition wakelock in 4396 // a second if it's held. The second pause is to allow apps 4397 // to reconnect over the new network 4398 if (mNetTransitionWakeLock.isHeld()) { 4399 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4400 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4401 mNetTransitionWakeLockSerialNumber, 0), 4402 1000); 4403 } 4404 } 4405 } 4406 4407 // do this after the default net is switched, but 4408 // before LegacyTypeTracker sends legacy broadcasts 4409 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4410 4411 if (isNewDefault) { 4412 // Maintain the illusion: since the legacy API only 4413 // understands one network at a time, we must pretend 4414 // that the current default network disconnected before 4415 // the new one connected. 4416 if (oldDefaultNetwork != null) { 4417 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4418 oldDefaultNetwork, true); 4419 } 4420 mDefaultInetConditionPublished = newNetwork.lastValidated ? 100 : 0; 4421 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4422 notifyLockdownVpn(newNetwork); 4423 } 4424 4425 if (keep) { 4426 // Notify battery stats service about this network, both the normal 4427 // interface and any stacked links. 4428 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4429 try { 4430 final IBatteryStats bs = BatteryStatsService.getService(); 4431 final int type = newNetwork.networkInfo.getType(); 4432 4433 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4434 bs.noteNetworkInterfaceType(baseIface, type); 4435 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4436 final String stackedIface = stacked.getInterfaceName(); 4437 bs.noteNetworkInterfaceType(stackedIface, type); 4438 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4439 } 4440 } catch (RemoteException ignored) { 4441 } 4442 4443 // This has to happen after the notifyNetworkCallbacks as that tickles each 4444 // ConnectivityManager instance so that legacy requests correctly bind dns 4445 // requests to this network. The legacy users are listening for this bcast 4446 // and will generally do a dns request so they can ensureRouteToHost and if 4447 // they do that before the callbacks happen they'll use the default network. 4448 // 4449 // TODO: Is there still a race here? We send the broadcast 4450 // after sending the callback, but if the app can receive the 4451 // broadcast before the callback, it might still break. 4452 // 4453 // This *does* introduce a race where if the user uses the new api 4454 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4455 // they may get old info. Reverse this after the old startUsing api is removed. 4456 // This is on top of the multiple intent sequencing referenced in the todo above. 4457 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4458 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4459 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4460 // legacy type tracker filters out repeat adds 4461 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4462 } 4463 } 4464 4465 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4466 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4467 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4468 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4469 if (newNetwork.isVPN()) { 4470 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4471 } 4472 } 4473 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4474 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4475 if (unneeded(nai)) { 4476 if (DBG) log("Reaping " + nai.name()); 4477 teardownUnneededNetwork(nai); 4478 } 4479 } 4480 } 4481 } 4482 4483 /** 4484 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4485 * being disconnected. 4486 * @param changed If only one Network's score or capabilities have been modified since the last 4487 * time this function was called, pass this Network in this argument, otherwise pass 4488 * null. 4489 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4490 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4491 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4492 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4493 * network's score. 4494 */ 4495 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4496 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4497 // to avoid the slowness. It is not simply enough to process just "changed", for 4498 // example in the case where "changed"'s score decreases and another network should begin 4499 // satifying a NetworkRequest that "changed" currently satisfies. 4500 4501 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4502 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4503 // rematchNetworkAndRequests() handles. 4504 if (changed != null && oldScore < changed.getCurrentScore()) { 4505 rematchNetworkAndRequests(changed, ReapUnvalidatedNetworks.REAP); 4506 } else { 4507 final NetworkAgentInfo[] nais = mNetworkAgentInfos.values().toArray( 4508 new NetworkAgentInfo[mNetworkAgentInfos.size()]); 4509 // Rematch higher scoring networks first to prevent requests first matching a lower 4510 // scoring network and then a higher scoring network, which could produce multiple 4511 // callbacks and inadvertently unlinger networks. 4512 Arrays.sort(nais); 4513 for (NetworkAgentInfo nai : nais) { 4514 rematchNetworkAndRequests(nai, 4515 // Only reap the last time through the loop. Reaping before all rematching 4516 // is complete could incorrectly teardown a network that hasn't yet been 4517 // rematched. 4518 (nai != nais[nais.length-1]) ? ReapUnvalidatedNetworks.DONT_REAP 4519 : ReapUnvalidatedNetworks.REAP); 4520 } 4521 } 4522 } 4523 4524 private void updateInetCondition(NetworkAgentInfo nai) { 4525 // Don't bother updating until we've graduated to validated at least once. 4526 if (!nai.everValidated) return; 4527 // For now only update icons for default connection. 4528 // TODO: Update WiFi and cellular icons separately. b/17237507 4529 if (!isDefaultNetwork(nai)) return; 4530 4531 int newInetCondition = nai.lastValidated ? 100 : 0; 4532 // Don't repeat publish. 4533 if (newInetCondition == mDefaultInetConditionPublished) return; 4534 4535 mDefaultInetConditionPublished = newInetCondition; 4536 sendInetConditionBroadcast(nai.networkInfo); 4537 } 4538 4539 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4540 if (mLockdownTracker != null) { 4541 if (nai != null && nai.isVPN()) { 4542 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4543 } else { 4544 mLockdownTracker.onNetworkInfoChanged(); 4545 } 4546 } 4547 } 4548 4549 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4550 NetworkInfo.State state = newInfo.getState(); 4551 NetworkInfo oldInfo = null; 4552 final int oldScore = networkAgent.getCurrentScore(); 4553 synchronized (networkAgent) { 4554 oldInfo = networkAgent.networkInfo; 4555 networkAgent.networkInfo = newInfo; 4556 } 4557 notifyLockdownVpn(networkAgent); 4558 4559 if (oldInfo != null && oldInfo.getState() == state) { 4560 if (VDBG) log("ignoring duplicate network state non-change"); 4561 return; 4562 } 4563 if (DBG) { 4564 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4565 (oldInfo == null ? "null" : oldInfo.getState()) + 4566 " to " + state); 4567 } 4568 4569 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4570 try { 4571 // This should never fail. Specifying an already in use NetID will cause failure. 4572 if (networkAgent.isVPN()) { 4573 mNetd.createVirtualNetwork(networkAgent.network.netId, 4574 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4575 (networkAgent.networkMisc == null || 4576 !networkAgent.networkMisc.allowBypass)); 4577 } else { 4578 mNetd.createPhysicalNetwork(networkAgent.network.netId, 4579 networkAgent.networkCapabilities.hasCapability( 4580 NET_CAPABILITY_NOT_RESTRICTED) ? 4581 null : NetworkManagementService.PERMISSION_SYSTEM); 4582 } 4583 } catch (Exception e) { 4584 loge("Error creating network " + networkAgent.network.netId + ": " 4585 + e.getMessage()); 4586 return; 4587 } 4588 networkAgent.created = true; 4589 updateLinkProperties(networkAgent, null); 4590 notifyIfacesChanged(); 4591 4592 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4593 scheduleUnvalidatedPrompt(networkAgent); 4594 4595 if (networkAgent.isVPN()) { 4596 // Temporarily disable the default proxy (not global). 4597 synchronized (mProxyLock) { 4598 if (!mDefaultProxyDisabled) { 4599 mDefaultProxyDisabled = true; 4600 if (mGlobalProxy == null && mDefaultProxy != null) { 4601 sendProxyBroadcast(null); 4602 } 4603 } 4604 } 4605 // TODO: support proxy per network. 4606 } 4607 4608 // Whether a particular NetworkRequest listen should cause signal strength thresholds to 4609 // be communicated to a particular NetworkAgent depends only on the network's immutable, 4610 // capabilities, so it only needs to be done once on initial connect, not every time the 4611 // network's capabilities change. Note that we do this before rematching the network, 4612 // so we could decide to tear it down immediately afterwards. That's fine though - on 4613 // disconnection NetworkAgents should stop any signal strength monitoring they have been 4614 // doing. 4615 updateSignalStrengthThresholds(networkAgent); 4616 4617 // Consider network even though it is not yet validated. 4618 rematchNetworkAndRequests(networkAgent, ReapUnvalidatedNetworks.REAP); 4619 4620 // This has to happen after matching the requests, because callbacks are just requests. 4621 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4622 } else if (state == NetworkInfo.State.DISCONNECTED) { 4623 networkAgent.asyncChannel.disconnect(); 4624 if (networkAgent.isVPN()) { 4625 synchronized (mProxyLock) { 4626 if (mDefaultProxyDisabled) { 4627 mDefaultProxyDisabled = false; 4628 if (mGlobalProxy == null && mDefaultProxy != null) { 4629 sendProxyBroadcast(mDefaultProxy); 4630 } 4631 } 4632 } 4633 } 4634 } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) || 4635 state == NetworkInfo.State.SUSPENDED) { 4636 // going into or coming out of SUSPEND: rescore and notify 4637 if (networkAgent.getCurrentScore() != oldScore) { 4638 rematchAllNetworksAndRequests(networkAgent, oldScore); 4639 } 4640 notifyNetworkCallbacks(networkAgent, (state == NetworkInfo.State.SUSPENDED ? 4641 ConnectivityManager.CALLBACK_SUSPENDED : 4642 ConnectivityManager.CALLBACK_RESUMED)); 4643 mLegacyTypeTracker.update(networkAgent); 4644 } 4645 } 4646 4647 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4648 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4649 if (score < 0) { 4650 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4651 "). Bumping score to min of 0"); 4652 score = 0; 4653 } 4654 4655 final int oldScore = nai.getCurrentScore(); 4656 nai.setCurrentScore(score); 4657 4658 rematchAllNetworksAndRequests(nai, oldScore); 4659 4660 sendUpdatedScoreToFactories(nai); 4661 } 4662 4663 // notify only this one new request of the current state 4664 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4665 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4666 // TODO - read state from monitor to decide what to send. 4667// if (nai.networkMonitor.isLingering()) { 4668// notifyType = NetworkCallbacks.LOSING; 4669// } else if (nai.networkMonitor.isEvaluating()) { 4670// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4671// } 4672 if (nri.mPendingIntent == null) { 4673 callCallbackForRequest(nri, nai, notifyType); 4674 } else { 4675 sendPendingIntentForRequest(nri, nai, notifyType); 4676 } 4677 } 4678 4679 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, DetailedState state, int type) { 4680 // The NetworkInfo we actually send out has no bearing on the real 4681 // state of affairs. For example, if the default connection is mobile, 4682 // and a request for HIPRI has just gone away, we need to pretend that 4683 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4684 // the state to DISCONNECTED, even though the network is of type MOBILE 4685 // and is still connected. 4686 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4687 info.setType(type); 4688 if (state != DetailedState.DISCONNECTED) { 4689 info.setDetailedState(state, null, info.getExtraInfo()); 4690 sendConnectedBroadcast(info); 4691 } else { 4692 info.setDetailedState(state, info.getReason(), info.getExtraInfo()); 4693 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4694 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4695 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4696 if (info.isFailover()) { 4697 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4698 nai.networkInfo.setFailover(false); 4699 } 4700 if (info.getReason() != null) { 4701 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4702 } 4703 if (info.getExtraInfo() != null) { 4704 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4705 } 4706 NetworkAgentInfo newDefaultAgent = null; 4707 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4708 newDefaultAgent = getDefaultNetwork(); 4709 if (newDefaultAgent != null) { 4710 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4711 newDefaultAgent.networkInfo); 4712 } else { 4713 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4714 } 4715 } 4716 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4717 mDefaultInetConditionPublished); 4718 sendStickyBroadcast(intent); 4719 if (newDefaultAgent != null) { 4720 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4721 } 4722 } 4723 } 4724 4725 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4726 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4727 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4728 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4729 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4730 if (VDBG) log(" sending notification for " + nr); 4731 if (nri.mPendingIntent == null) { 4732 callCallbackForRequest(nri, networkAgent, notifyType); 4733 } else { 4734 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4735 } 4736 } 4737 } 4738 4739 private String notifyTypeToName(int notifyType) { 4740 switch (notifyType) { 4741 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4742 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4743 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4744 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4745 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4746 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4747 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4748 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4749 } 4750 return "UNKNOWN"; 4751 } 4752 4753 /** 4754 * Notify other system services that set of active ifaces has changed. 4755 */ 4756 private void notifyIfacesChanged() { 4757 try { 4758 mStatsService.forceUpdateIfaces(); 4759 } catch (Exception ignored) { 4760 } 4761 } 4762 4763 @Override 4764 public boolean addVpnAddress(String address, int prefixLength) { 4765 throwIfLockdownEnabled(); 4766 int user = UserHandle.getUserId(Binder.getCallingUid()); 4767 synchronized (mVpns) { 4768 return mVpns.get(user).addAddress(address, prefixLength); 4769 } 4770 } 4771 4772 @Override 4773 public boolean removeVpnAddress(String address, int prefixLength) { 4774 throwIfLockdownEnabled(); 4775 int user = UserHandle.getUserId(Binder.getCallingUid()); 4776 synchronized (mVpns) { 4777 return mVpns.get(user).removeAddress(address, prefixLength); 4778 } 4779 } 4780 4781 @Override 4782 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4783 throwIfLockdownEnabled(); 4784 int user = UserHandle.getUserId(Binder.getCallingUid()); 4785 boolean success; 4786 synchronized (mVpns) { 4787 success = mVpns.get(user).setUnderlyingNetworks(networks); 4788 } 4789 if (success) { 4790 notifyIfacesChanged(); 4791 } 4792 return success; 4793 } 4794 4795 @Override 4796 public void startNattKeepalive(Network network, int intervalSeconds, Messenger messenger, 4797 IBinder binder, String srcAddr, int srcPort, String dstAddr) { 4798 enforceKeepalivePermission(); 4799 mKeepaliveTracker.startNattKeepalive( 4800 getNetworkAgentInfoForNetwork(network), 4801 intervalSeconds, messenger, binder, 4802 srcAddr, srcPort, dstAddr, ConnectivityManager.PacketKeepalive.NATT_PORT); 4803 } 4804 4805 @Override 4806 public void stopKeepalive(Network network, int slot) { 4807 mHandler.sendMessage(mHandler.obtainMessage( 4808 NetworkAgent.CMD_STOP_PACKET_KEEPALIVE, slot, PacketKeepalive.SUCCESS, network)); 4809 } 4810 4811 @Override 4812 public void factoryReset() { 4813 enforceConnectivityInternalPermission(); 4814 4815 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 4816 return; 4817 } 4818 4819 final int userId = UserHandle.getCallingUserId(); 4820 4821 // Turn airplane mode off 4822 setAirplaneMode(false); 4823 4824 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 4825 // Untether 4826 for (String tether : getTetheredIfaces()) { 4827 untether(tether); 4828 } 4829 } 4830 4831 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 4832 // Turn VPN off 4833 VpnConfig vpnConfig = getVpnConfig(userId); 4834 if (vpnConfig != null) { 4835 if (vpnConfig.legacy) { 4836 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 4837 } else { 4838 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 4839 // in the future without user intervention. 4840 setVpnPackageAuthorization(vpnConfig.user, userId, false); 4841 4842 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 4843 } 4844 } 4845 } 4846 } 4847 4848 @VisibleForTesting 4849 public NetworkMonitor createNetworkMonitor(Context context, Handler handler, 4850 NetworkAgentInfo nai, NetworkRequest defaultRequest) { 4851 return new NetworkMonitor(context, handler, nai, defaultRequest); 4852 } 4853 4854} 4855