ConnectivityService.java revision b68d2d5b68dc58fb7b75ce94af74de58a1b9d3f9
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.BroadcastOptions; 38import android.app.Notification; 39import android.app.NotificationManager; 40import android.app.PendingIntent; 41import android.content.BroadcastReceiver; 42import android.content.ContentResolver; 43import android.content.Context; 44import android.content.Intent; 45import android.content.IntentFilter; 46import android.content.pm.PackageManager; 47import android.content.res.Configuration; 48import android.content.res.Resources; 49import android.database.ContentObserver; 50import android.net.ConnectivityManager; 51import android.net.ConnectivityManager.PacketKeepalive; 52import android.net.IConnectivityManager; 53import android.net.INetworkManagementEventObserver; 54import android.net.INetworkPolicyListener; 55import android.net.INetworkPolicyManager; 56import android.net.INetworkStatsService; 57import android.net.LinkProperties; 58import android.net.LinkProperties.CompareResult; 59import android.net.Network; 60import android.net.NetworkAgent; 61import android.net.NetworkCapabilities; 62import android.net.NetworkConfig; 63import android.net.NetworkInfo; 64import android.net.NetworkInfo.DetailedState; 65import android.net.NetworkMisc; 66import android.net.NetworkQuotaInfo; 67import android.net.NetworkRequest; 68import android.net.NetworkState; 69import android.net.NetworkUtils; 70import android.net.Proxy; 71import android.net.ProxyInfo; 72import android.net.RouteInfo; 73import android.net.UidRange; 74import android.net.Uri; 75import android.os.Binder; 76import android.os.Build; 77import android.os.Bundle; 78import android.os.FileUtils; 79import android.os.Handler; 80import android.os.HandlerThread; 81import android.os.IBinder; 82import android.os.INetworkManagementService; 83import android.os.Looper; 84import android.os.Message; 85import android.os.Messenger; 86import android.os.ParcelFileDescriptor; 87import android.os.PowerManager; 88import android.os.Process; 89import android.os.RemoteException; 90import android.os.SystemClock; 91import android.os.SystemProperties; 92import android.os.UserHandle; 93import android.os.UserManager; 94import android.provider.Settings; 95import android.security.Credentials; 96import android.security.KeyStore; 97import android.telephony.TelephonyManager; 98import android.text.TextUtils; 99import android.util.LocalLog; 100import android.util.LocalLog.ReadOnlyLocalLog; 101import android.util.Pair; 102import android.util.Slog; 103import android.util.SparseArray; 104import android.util.SparseBooleanArray; 105import android.util.SparseIntArray; 106import android.util.Xml; 107 108import com.android.internal.R; 109import com.android.internal.annotations.GuardedBy; 110import com.android.internal.annotations.VisibleForTesting; 111import com.android.internal.app.IBatteryStats; 112import com.android.internal.net.LegacyVpnInfo; 113import com.android.internal.net.NetworkStatsFactory; 114import com.android.internal.net.VpnConfig; 115import com.android.internal.net.VpnInfo; 116import com.android.internal.net.VpnProfile; 117import com.android.internal.telephony.DctConstants; 118import com.android.internal.util.AsyncChannel; 119import com.android.internal.util.IndentingPrintWriter; 120import com.android.internal.util.XmlUtils; 121import com.android.server.am.BatteryStatsService; 122import com.android.server.connectivity.DataConnectionStats; 123import com.android.server.connectivity.KeepaliveTracker; 124import com.android.server.connectivity.NetworkDiagnostics; 125import com.android.server.connectivity.Nat464Xlat; 126import com.android.server.connectivity.NetworkAgentInfo; 127import com.android.server.connectivity.NetworkMonitor; 128import com.android.server.connectivity.PacManager; 129import com.android.server.connectivity.PermissionMonitor; 130import com.android.server.connectivity.Tethering; 131import com.android.server.connectivity.Vpn; 132import com.android.server.net.BaseNetworkObserver; 133import com.android.server.net.LockdownVpnTracker; 134import com.google.android.collect.Lists; 135import com.google.android.collect.Sets; 136 137import org.xmlpull.v1.XmlPullParser; 138import org.xmlpull.v1.XmlPullParserException; 139 140import java.io.File; 141import java.io.FileDescriptor; 142import java.io.FileNotFoundException; 143import java.io.FileReader; 144import java.io.IOException; 145import java.io.PrintWriter; 146import java.net.Inet4Address; 147import java.net.InetAddress; 148import java.net.UnknownHostException; 149import java.util.ArrayDeque; 150import java.util.ArrayList; 151import java.util.Arrays; 152import java.util.Collection; 153import java.util.HashMap; 154import java.util.HashSet; 155import java.util.SortedSet; 156import java.util.TreeSet; 157import java.util.Iterator; 158import java.util.List; 159import java.util.Map; 160import java.util.Objects; 161import java.util.concurrent.atomic.AtomicInteger; 162 163/** 164 * @hide 165 */ 166public class ConnectivityService extends IConnectivityManager.Stub 167 implements PendingIntent.OnFinished { 168 private static final String TAG = "ConnectivityService"; 169 170 private static final boolean DBG = true; 171 private static final boolean VDBG = false; 172 173 private static final boolean LOGD_RULES = false; 174 175 // TODO: create better separation between radio types and network types 176 177 // how long to wait before switching back to a radio's default network 178 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 179 // system property that can override the above value 180 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 181 "android.telephony.apn-restore"; 182 183 // How long to wait before putting up a "This network doesn't have an Internet connection, 184 // connect anyway?" dialog after the user selects a network that doesn't validate. 185 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 186 187 // How long to delay to removal of a pending intent based request. 188 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 189 private final int mReleasePendingIntentDelayMs; 190 191 private Tethering mTethering; 192 193 private final PermissionMonitor mPermissionMonitor; 194 195 private KeyStore mKeyStore; 196 197 @GuardedBy("mVpns") 198 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 199 200 private boolean mLockdownEnabled; 201 private LockdownVpnTracker mLockdownTracker; 202 203 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 204 private Object mRulesLock = new Object(); 205 /** Currently active network rules by UID. */ 206 private SparseIntArray mUidRules = new SparseIntArray(); 207 /** Set of ifaces that are costly. */ 208 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 209 210 final private Context mContext; 211 private int mNetworkPreference; 212 // 0 is full bad, 100 is full good 213 private int mDefaultInetConditionPublished = 0; 214 215 private int mNumDnsEntries; 216 217 private boolean mTestMode; 218 private static ConnectivityService sServiceInstance; 219 220 private INetworkManagementService mNetd; 221 private INetworkStatsService mStatsService; 222 private INetworkPolicyManager mPolicyManager; 223 224 private String mCurrentTcpBufferSizes; 225 226 private static final int ENABLED = 1; 227 private static final int DISABLED = 0; 228 229 private enum ReapUnvalidatedNetworks { 230 // Tear down networks that have no chance (e.g. even if validated) of becoming 231 // the highest scoring network satisfying a NetworkRequest. This should be passed when 232 // all networks have been rematched against all NetworkRequests. 233 REAP, 234 // Don't reap networks. This should be passed when some networks have not yet been 235 // rematched against all NetworkRequests. 236 DONT_REAP 237 }; 238 239 /** 240 * used internally to change our mobile data enabled flag 241 */ 242 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 243 244 /** 245 * used internally to clear a wakelock when transitioning 246 * from one net to another. Clear happens when we get a new 247 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 248 * after a timeout if no network is found (typically 1 min). 249 */ 250 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 251 252 /** 253 * used internally to reload global proxy settings 254 */ 255 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 256 257 /** 258 * PAC manager has received new port. 259 */ 260 private static final int EVENT_PROXY_HAS_CHANGED = 16; 261 262 /** 263 * used internally when registering NetworkFactories 264 * obj = NetworkFactoryInfo 265 */ 266 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 267 268 /** 269 * used internally when registering NetworkAgents 270 * obj = Messenger 271 */ 272 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 273 274 /** 275 * used to add a network request 276 * includes a NetworkRequestInfo 277 */ 278 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 279 280 /** 281 * indicates a timeout period is over - check if we had a network yet or not 282 * and if not, call the timeout calback (but leave the request live until they 283 * cancel it. 284 * includes a NetworkRequestInfo 285 */ 286 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 287 288 /** 289 * used to add a network listener - no request 290 * includes a NetworkRequestInfo 291 */ 292 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 293 294 /** 295 * used to remove a network request, either a listener or a real request 296 * arg1 = UID of caller 297 * obj = NetworkRequest 298 */ 299 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 300 301 /** 302 * used internally when registering NetworkFactories 303 * obj = Messenger 304 */ 305 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 306 307 /** 308 * used internally to expire a wakelock when transitioning 309 * from one net to another. Expire happens when we fail to find 310 * a new network (typically after 1 minute) - 311 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 312 * a replacement network. 313 */ 314 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 315 316 /** 317 * Used internally to indicate the system is ready. 318 */ 319 private static final int EVENT_SYSTEM_READY = 25; 320 321 /** 322 * used to add a network request with a pending intent 323 * obj = NetworkRequestInfo 324 */ 325 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 326 327 /** 328 * used to remove a pending intent and its associated network request. 329 * arg1 = UID of caller 330 * obj = PendingIntent 331 */ 332 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 333 334 /** 335 * used to specify whether a network should be used even if unvalidated. 336 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 337 * arg2 = whether to remember this choice in the future (1 or 0) 338 * obj = network 339 */ 340 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 341 342 /** 343 * used to ask the user to confirm a connection to an unvalidated network. 344 * obj = network 345 */ 346 private static final int EVENT_PROMPT_UNVALIDATED = 29; 347 348 /** 349 * used internally to (re)configure mobile data always-on settings. 350 */ 351 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 352 353 /** 354 * used to add a network listener with a pending intent 355 * obj = NetworkRequestInfo 356 */ 357 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 358 359 /** Handler thread used for both of the handlers below. */ 360 @VisibleForTesting 361 protected final HandlerThread mHandlerThread; 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 return; 515 } 516 517 list.add(nai); 518 519 // Send a broadcast if this is the first network of its type or if it's the default. 520 final boolean isDefaultNetwork = isDefaultNetwork(nai); 521 if (list.size() == 1 || isDefaultNetwork) { 522 maybeLogBroadcast(nai, DetailedState.CONNECTED, type, isDefaultNetwork); 523 sendLegacyNetworkBroadcast(nai, DetailedState.CONNECTED, type); 524 } 525 } 526 527 /** Removes the given network from the specified legacy type list. */ 528 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 529 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 530 if (list == null || list.isEmpty()) { 531 return; 532 } 533 534 final boolean wasFirstNetwork = list.get(0).equals(nai); 535 536 if (!list.remove(nai)) { 537 return; 538 } 539 540 final DetailedState state = DetailedState.DISCONNECTED; 541 542 if (wasFirstNetwork || wasDefault) { 543 maybeLogBroadcast(nai, state, type, wasDefault); 544 sendLegacyNetworkBroadcast(nai, state, type); 545 } 546 547 if (!list.isEmpty() && wasFirstNetwork) { 548 if (DBG) log("Other network available for type " + type + 549 ", sending connected broadcast"); 550 final NetworkAgentInfo replacement = list.get(0); 551 maybeLogBroadcast(replacement, state, type, isDefaultNetwork(replacement)); 552 sendLegacyNetworkBroadcast(replacement, state, type); 553 } 554 } 555 556 /** Removes the given network from all legacy type lists. */ 557 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 558 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 559 for (int type = 0; type < mTypeLists.length; type++) { 560 remove(type, nai, wasDefault); 561 } 562 } 563 564 // send out another legacy broadcast - currently only used for suspend/unsuspend 565 // toggle 566 public void update(NetworkAgentInfo nai) { 567 final boolean isDefault = isDefaultNetwork(nai); 568 final DetailedState state = nai.networkInfo.getDetailedState(); 569 for (int type = 0; type < mTypeLists.length; type++) { 570 final ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 571 final boolean contains = (list != null && list.contains(nai)); 572 final boolean isFirst = (list != null && list.size() > 0 && nai == list.get(0)); 573 if (isFirst || (contains && isDefault)) { 574 maybeLogBroadcast(nai, state, type, isDefault); 575 sendLegacyNetworkBroadcast(nai, state, type); 576 } 577 } 578 } 579 580 private String naiToString(NetworkAgentInfo nai) { 581 String name = (nai != null) ? nai.name() : "null"; 582 String state = (nai.networkInfo != null) ? 583 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 584 "???/???"; 585 return name + " " + state; 586 } 587 588 public void dump(IndentingPrintWriter pw) { 589 pw.println("mLegacyTypeTracker:"); 590 pw.increaseIndent(); 591 pw.print("Supported types:"); 592 for (int type = 0; type < mTypeLists.length; type++) { 593 if (mTypeLists[type] != null) pw.print(" " + type); 594 } 595 pw.println(); 596 pw.println("Current state:"); 597 pw.increaseIndent(); 598 for (int type = 0; type < mTypeLists.length; type++) { 599 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 600 for (NetworkAgentInfo nai : mTypeLists[type]) { 601 pw.println(type + " " + naiToString(nai)); 602 } 603 } 604 pw.decreaseIndent(); 605 pw.decreaseIndent(); 606 pw.println(); 607 } 608 609 // This class needs its own log method because it has a different TAG. 610 private void log(String s) { 611 Slog.d(TAG, s); 612 } 613 614 } 615 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 616 617 @VisibleForTesting 618 protected HandlerThread createHandlerThread() { 619 return new HandlerThread("ConnectivityServiceThread"); 620 } 621 622 public ConnectivityService(Context context, INetworkManagementService netManager, 623 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 624 if (DBG) log("ConnectivityService starting up"); 625 626 mDefaultRequest = createInternetRequestForTransport(-1); 627 NetworkRequestInfo defaultNRI = new NetworkRequestInfo(null, mDefaultRequest, 628 new Binder(), NetworkRequestInfo.REQUEST); 629 mNetworkRequests.put(mDefaultRequest, defaultNRI); 630 mNetworkRequestInfoLogs.log("REGISTER " + defaultNRI); 631 632 mDefaultMobileDataRequest = createInternetRequestForTransport( 633 NetworkCapabilities.TRANSPORT_CELLULAR); 634 635 mHandlerThread = createHandlerThread(); 636 mHandlerThread.start(); 637 mHandler = new InternalHandler(mHandlerThread.getLooper()); 638 mTrackerHandler = new NetworkStateTrackerHandler(mHandlerThread.getLooper()); 639 640 // setup our unique device name 641 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 642 String id = Settings.Secure.getString(context.getContentResolver(), 643 Settings.Secure.ANDROID_ID); 644 if (id != null && id.length() > 0) { 645 String name = new String("android-").concat(id); 646 SystemProperties.set("net.hostname", name); 647 } 648 } 649 650 // read our default dns server ip 651 String dns = Settings.Global.getString(context.getContentResolver(), 652 Settings.Global.DEFAULT_DNS_SERVER); 653 if (dns == null || dns.length() == 0) { 654 dns = context.getResources().getString( 655 com.android.internal.R.string.config_default_dns_server); 656 } 657 try { 658 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 659 } catch (IllegalArgumentException e) { 660 loge("Error setting defaultDns using " + dns); 661 } 662 663 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 664 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 665 666 mContext = checkNotNull(context, "missing Context"); 667 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 668 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 669 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 670 mKeyStore = KeyStore.getInstance(); 671 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 672 673 try { 674 mPolicyManager.registerListener(mPolicyListener); 675 } catch (RemoteException e) { 676 // ouch, no rules updates means some processes may never get network 677 loge("unable to register INetworkPolicyListener" + e.toString()); 678 } 679 680 final PowerManager powerManager = (PowerManager) context.getSystemService( 681 Context.POWER_SERVICE); 682 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 683 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 684 com.android.internal.R.integer.config_networkTransitionTimeout); 685 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 686 687 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 688 689 // TODO: What is the "correct" way to do determine if this is a wifi only device? 690 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 691 log("wifiOnly=" + wifiOnly); 692 String[] naStrings = context.getResources().getStringArray( 693 com.android.internal.R.array.networkAttributes); 694 for (String naString : naStrings) { 695 try { 696 NetworkConfig n = new NetworkConfig(naString); 697 if (VDBG) log("naString=" + naString + " config=" + n); 698 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 699 loge("Error in networkAttributes - ignoring attempt to define type " + 700 n.type); 701 continue; 702 } 703 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 704 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 705 n.type); 706 continue; 707 } 708 if (mNetConfigs[n.type] != null) { 709 loge("Error in networkAttributes - ignoring attempt to redefine type " + 710 n.type); 711 continue; 712 } 713 mLegacyTypeTracker.addSupportedType(n.type); 714 715 mNetConfigs[n.type] = n; 716 mNetworksDefined++; 717 } catch(Exception e) { 718 // ignore it - leave the entry null 719 } 720 } 721 722 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 723 if (mNetConfigs[TYPE_VPN] == null) { 724 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 725 // don't need to add TYPE_VPN to mNetConfigs. 726 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 727 mNetworksDefined++; // used only in the log() statement below. 728 } 729 730 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 731 732 mProtectedNetworks = new ArrayList<Integer>(); 733 int[] protectedNetworks = context.getResources().getIntArray( 734 com.android.internal.R.array.config_protectedNetworks); 735 for (int p : protectedNetworks) { 736 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 737 mProtectedNetworks.add(p); 738 } else { 739 if (DBG) loge("Ignoring protectedNetwork " + p); 740 } 741 } 742 743 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 744 && SystemProperties.get("ro.build.type").equals("eng"); 745 746 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 747 748 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 749 750 //set up the listener for user state for creating user VPNs 751 IntentFilter intentFilter = new IntentFilter(); 752 intentFilter.addAction(Intent.ACTION_USER_STARTING); 753 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 754 intentFilter.addAction(Intent.ACTION_USER_ADDED); 755 intentFilter.addAction(Intent.ACTION_USER_REMOVED); 756 mContext.registerReceiverAsUser( 757 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 758 759 try { 760 mNetd.registerObserver(mTethering); 761 mNetd.registerObserver(mDataActivityObserver); 762 } catch (RemoteException e) { 763 loge("Error registering observer :" + e); 764 } 765 766 if (DBG) { 767 mInetLog = new ArrayList(); 768 } 769 770 mSettingsObserver = new SettingsObserver(mContext, mHandler); 771 registerSettingsCallbacks(); 772 773 mDataConnectionStats = new DataConnectionStats(mContext); 774 mDataConnectionStats.startMonitoring(); 775 776 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 777 778 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 779 780 mKeepaliveTracker = new KeepaliveTracker(mHandler); 781 } 782 783 private NetworkRequest createInternetRequestForTransport(int transportType) { 784 NetworkCapabilities netCap = new NetworkCapabilities(); 785 netCap.addCapability(NET_CAPABILITY_INTERNET); 786 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 787 if (transportType > -1) { 788 netCap.addTransportType(transportType); 789 } 790 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 791 } 792 793 private void handleMobileDataAlwaysOn() { 794 final boolean enable = (Settings.Global.getInt( 795 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 796 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 797 if (enable == isEnabled) { 798 return; // Nothing to do. 799 } 800 801 if (enable) { 802 handleRegisterNetworkRequest(new NetworkRequestInfo( 803 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestInfo.REQUEST)); 804 } else { 805 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 806 } 807 } 808 809 private void registerSettingsCallbacks() { 810 // Watch for global HTTP proxy changes. 811 mSettingsObserver.observe( 812 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 813 EVENT_APPLY_GLOBAL_HTTP_PROXY); 814 815 // Watch for whether or not to keep mobile data always on. 816 mSettingsObserver.observe( 817 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 818 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 819 } 820 821 private synchronized int nextNetworkRequestId() { 822 return mNextNetworkRequestId++; 823 } 824 825 @VisibleForTesting 826 protected int reserveNetId() { 827 synchronized (mNetworkForNetId) { 828 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 829 int netId = mNextNetId; 830 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 831 // Make sure NetID unused. http://b/16815182 832 if (!mNetIdInUse.get(netId)) { 833 mNetIdInUse.put(netId, true); 834 return netId; 835 } 836 } 837 } 838 throw new IllegalStateException("No free netIds"); 839 } 840 841 private NetworkState getFilteredNetworkState(int networkType, int uid) { 842 NetworkInfo info = null; 843 LinkProperties lp = null; 844 NetworkCapabilities nc = null; 845 Network network = null; 846 String subscriberId = null; 847 848 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 849 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 850 if (nai != null) { 851 synchronized (nai) { 852 info = new NetworkInfo(nai.networkInfo); 853 lp = new LinkProperties(nai.linkProperties); 854 nc = new NetworkCapabilities(nai.networkCapabilities); 855 // Network objects are outwardly immutable so there is no point to duplicating. 856 // Duplicating also precludes sharing socket factories and connection pools. 857 network = nai.network; 858 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 859 } 860 info.setType(networkType); 861 } else { 862 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 863 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 864 info.setIsAvailable(true); 865 lp = new LinkProperties(); 866 nc = new NetworkCapabilities(); 867 network = null; 868 } 869 info = getFilteredNetworkInfo(info, lp, uid); 870 } 871 872 return new NetworkState(info, lp, nc, network, subscriberId, null); 873 } 874 875 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 876 if (network == null) { 877 return null; 878 } 879 synchronized (mNetworkForNetId) { 880 return mNetworkForNetId.get(network.netId); 881 } 882 }; 883 884 private Network[] getVpnUnderlyingNetworks(int uid) { 885 if (!mLockdownEnabled) { 886 int user = UserHandle.getUserId(uid); 887 synchronized (mVpns) { 888 Vpn vpn = mVpns.get(user); 889 if (vpn != null && vpn.appliesToUid(uid)) { 890 return vpn.getUnderlyingNetworks(); 891 } 892 } 893 } 894 return null; 895 } 896 897 private NetworkState getUnfilteredActiveNetworkState(int uid) { 898 NetworkInfo info = null; 899 LinkProperties lp = null; 900 NetworkCapabilities nc = null; 901 Network network = null; 902 String subscriberId = null; 903 904 NetworkAgentInfo nai = getDefaultNetwork(); 905 906 final Network[] networks = getVpnUnderlyingNetworks(uid); 907 if (networks != null) { 908 // getUnderlyingNetworks() returns: 909 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 910 // empty array => the VPN explicitly said "no default network". 911 // non-empty array => the VPN specified one or more default networks; we use the 912 // first one. 913 if (networks.length > 0) { 914 nai = getNetworkAgentInfoForNetwork(networks[0]); 915 } else { 916 nai = null; 917 } 918 } 919 920 if (nai != null) { 921 synchronized (nai) { 922 info = new NetworkInfo(nai.networkInfo); 923 lp = new LinkProperties(nai.linkProperties); 924 nc = new NetworkCapabilities(nai.networkCapabilities); 925 // Network objects are outwardly immutable so there is no point to duplicating. 926 // Duplicating also precludes sharing socket factories and connection pools. 927 network = nai.network; 928 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 929 } 930 } 931 932 return new NetworkState(info, lp, nc, network, subscriberId, null); 933 } 934 935 /** 936 * Check if UID should be blocked from using the network with the given LinkProperties. 937 */ 938 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 939 final boolean networkCostly; 940 final int uidRules; 941 942 final String iface = (lp == null ? "" : lp.getInterfaceName()); 943 synchronized (mRulesLock) { 944 networkCostly = mMeteredIfaces.contains(iface); 945 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 946 } 947 948 if (uidRules == RULE_REJECT_ALL) { 949 return true; 950 } else if ((uidRules == RULE_REJECT_METERED) && networkCostly) { 951 return true; 952 } else { 953 return false; 954 } 955 } 956 957 /** 958 * Return a filtered {@link NetworkInfo}, potentially marked 959 * {@link DetailedState#BLOCKED} based on 960 * {@link #isNetworkWithLinkPropertiesBlocked}. 961 */ 962 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 963 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 964 // network is blocked; clone and override state 965 info = new NetworkInfo(info); 966 info.setDetailedState(DetailedState.BLOCKED, null, null); 967 if (VDBG) { 968 log("returning Blocked NetworkInfo for ifname=" + 969 lp.getInterfaceName() + ", uid=" + uid); 970 } 971 } 972 if (info != null && mLockdownTracker != null) { 973 info = mLockdownTracker.augmentNetworkInfo(info); 974 if (VDBG) log("returning Locked NetworkInfo"); 975 } 976 return info; 977 } 978 979 /** 980 * Return NetworkInfo for the active (i.e., connected) network interface. 981 * It is assumed that at most one network is active at a time. If more 982 * than one is active, it is indeterminate which will be returned. 983 * @return the info for the active network, or {@code null} if none is 984 * active 985 */ 986 @Override 987 public NetworkInfo getActiveNetworkInfo() { 988 enforceAccessPermission(); 989 final int uid = Binder.getCallingUid(); 990 NetworkState state = getUnfilteredActiveNetworkState(uid); 991 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 992 } 993 994 @Override 995 public Network getActiveNetwork() { 996 enforceAccessPermission(); 997 final int uid = Binder.getCallingUid(); 998 final int user = UserHandle.getUserId(uid); 999 int vpnNetId = NETID_UNSET; 1000 synchronized (mVpns) { 1001 final Vpn vpn = mVpns.get(user); 1002 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 1003 } 1004 NetworkAgentInfo nai; 1005 if (vpnNetId != NETID_UNSET) { 1006 synchronized (mNetworkForNetId) { 1007 nai = mNetworkForNetId.get(vpnNetId); 1008 } 1009 if (nai != null) return nai.network; 1010 } 1011 nai = getDefaultNetwork(); 1012 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 1013 return nai != null ? nai.network : null; 1014 } 1015 1016 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1017 enforceAccessPermission(); 1018 final int uid = Binder.getCallingUid(); 1019 NetworkState state = getUnfilteredActiveNetworkState(uid); 1020 return state.networkInfo; 1021 } 1022 1023 @Override 1024 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1025 enforceConnectivityInternalPermission(); 1026 NetworkState state = getUnfilteredActiveNetworkState(uid); 1027 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1028 } 1029 1030 @Override 1031 public NetworkInfo getNetworkInfo(int networkType) { 1032 enforceAccessPermission(); 1033 final int uid = Binder.getCallingUid(); 1034 if (getVpnUnderlyingNetworks(uid) != null) { 1035 // A VPN is active, so we may need to return one of its underlying networks. This 1036 // information is not available in LegacyTypeTracker, so we have to get it from 1037 // getUnfilteredActiveNetworkState. 1038 NetworkState state = getUnfilteredActiveNetworkState(uid); 1039 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1040 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1041 } 1042 } 1043 NetworkState state = getFilteredNetworkState(networkType, uid); 1044 return state.networkInfo; 1045 } 1046 1047 @Override 1048 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1049 enforceAccessPermission(); 1050 final int uid = Binder.getCallingUid(); 1051 NetworkInfo info = null; 1052 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1053 if (nai != null) { 1054 synchronized (nai) { 1055 info = new NetworkInfo(nai.networkInfo); 1056 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1057 } 1058 } 1059 return info; 1060 } 1061 1062 @Override 1063 public NetworkInfo[] getAllNetworkInfo() { 1064 enforceAccessPermission(); 1065 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1066 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1067 networkType++) { 1068 NetworkInfo info = getNetworkInfo(networkType); 1069 if (info != null) { 1070 result.add(info); 1071 } 1072 } 1073 return result.toArray(new NetworkInfo[result.size()]); 1074 } 1075 1076 @Override 1077 public Network getNetworkForType(int networkType) { 1078 enforceAccessPermission(); 1079 final int uid = Binder.getCallingUid(); 1080 NetworkState state = getFilteredNetworkState(networkType, uid); 1081 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1082 return state.network; 1083 } 1084 return null; 1085 } 1086 1087 @Override 1088 public Network[] getAllNetworks() { 1089 enforceAccessPermission(); 1090 synchronized (mNetworkForNetId) { 1091 final Network[] result = new Network[mNetworkForNetId.size()]; 1092 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1093 result[i] = mNetworkForNetId.valueAt(i).network; 1094 } 1095 return result; 1096 } 1097 } 1098 1099 @Override 1100 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1101 // The basic principle is: if an app's traffic could possibly go over a 1102 // network, without the app doing anything multinetwork-specific, 1103 // (hence, by "default"), then include that network's capabilities in 1104 // the array. 1105 // 1106 // In the normal case, app traffic only goes over the system's default 1107 // network connection, so that's the only network returned. 1108 // 1109 // With a VPN in force, some app traffic may go into the VPN, and thus 1110 // over whatever underlying networks the VPN specifies, while other app 1111 // traffic may go over the system default network (e.g.: a split-tunnel 1112 // VPN, or an app disallowed by the VPN), so the set of networks 1113 // returned includes the VPN's underlying networks and the system 1114 // default. 1115 enforceAccessPermission(); 1116 1117 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1118 1119 NetworkAgentInfo nai = getDefaultNetwork(); 1120 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1121 if (nc != null) { 1122 result.put(nai.network, nc); 1123 } 1124 1125 if (!mLockdownEnabled) { 1126 synchronized (mVpns) { 1127 Vpn vpn = mVpns.get(userId); 1128 if (vpn != null) { 1129 Network[] networks = vpn.getUnderlyingNetworks(); 1130 if (networks != null) { 1131 for (Network network : networks) { 1132 nai = getNetworkAgentInfoForNetwork(network); 1133 nc = getNetworkCapabilitiesInternal(nai); 1134 if (nc != null) { 1135 result.put(network, nc); 1136 } 1137 } 1138 } 1139 } 1140 } 1141 } 1142 1143 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1144 out = result.values().toArray(out); 1145 return out; 1146 } 1147 1148 @Override 1149 public boolean isNetworkSupported(int networkType) { 1150 enforceAccessPermission(); 1151 return mLegacyTypeTracker.isTypeSupported(networkType); 1152 } 1153 1154 /** 1155 * Return LinkProperties for the active (i.e., connected) default 1156 * network interface. It is assumed that at most one default network 1157 * is active at a time. If more than one is active, it is indeterminate 1158 * which will be returned. 1159 * @return the ip properties for the active network, or {@code null} if 1160 * none is active 1161 */ 1162 @Override 1163 public LinkProperties getActiveLinkProperties() { 1164 enforceAccessPermission(); 1165 final int uid = Binder.getCallingUid(); 1166 NetworkState state = getUnfilteredActiveNetworkState(uid); 1167 return state.linkProperties; 1168 } 1169 1170 @Override 1171 public LinkProperties getLinkPropertiesForType(int networkType) { 1172 enforceAccessPermission(); 1173 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1174 if (nai != null) { 1175 synchronized (nai) { 1176 return new LinkProperties(nai.linkProperties); 1177 } 1178 } 1179 return null; 1180 } 1181 1182 // TODO - this should be ALL networks 1183 @Override 1184 public LinkProperties getLinkProperties(Network network) { 1185 enforceAccessPermission(); 1186 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1187 if (nai != null) { 1188 synchronized (nai) { 1189 return new LinkProperties(nai.linkProperties); 1190 } 1191 } 1192 return null; 1193 } 1194 1195 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1196 if (nai != null) { 1197 synchronized (nai) { 1198 if (nai.networkCapabilities != null) { 1199 return new NetworkCapabilities(nai.networkCapabilities); 1200 } 1201 } 1202 } 1203 return null; 1204 } 1205 1206 @Override 1207 public NetworkCapabilities getNetworkCapabilities(Network network) { 1208 enforceAccessPermission(); 1209 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1210 } 1211 1212 @Override 1213 public NetworkState[] getAllNetworkState() { 1214 // Require internal since we're handing out IMSI details 1215 enforceConnectivityInternalPermission(); 1216 1217 final ArrayList<NetworkState> result = Lists.newArrayList(); 1218 for (Network network : getAllNetworks()) { 1219 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1220 if (nai != null) { 1221 synchronized (nai) { 1222 final String subscriberId = (nai.networkMisc != null) 1223 ? nai.networkMisc.subscriberId : null; 1224 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1225 nai.networkCapabilities, network, subscriberId, null)); 1226 } 1227 } 1228 } 1229 return result.toArray(new NetworkState[result.size()]); 1230 } 1231 1232 @Override 1233 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1234 enforceAccessPermission(); 1235 final int uid = Binder.getCallingUid(); 1236 final long token = Binder.clearCallingIdentity(); 1237 try { 1238 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1239 if (state.networkInfo != null) { 1240 try { 1241 return mPolicyManager.getNetworkQuotaInfo(state); 1242 } catch (RemoteException e) { 1243 } 1244 } 1245 return null; 1246 } finally { 1247 Binder.restoreCallingIdentity(token); 1248 } 1249 } 1250 1251 @Override 1252 public boolean isActiveNetworkMetered() { 1253 enforceAccessPermission(); 1254 final int uid = Binder.getCallingUid(); 1255 final long token = Binder.clearCallingIdentity(); 1256 try { 1257 return isActiveNetworkMeteredUnchecked(uid); 1258 } finally { 1259 Binder.restoreCallingIdentity(token); 1260 } 1261 } 1262 1263 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1264 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1265 if (state.networkInfo != null) { 1266 try { 1267 return mPolicyManager.isNetworkMetered(state); 1268 } catch (RemoteException e) { 1269 } 1270 } 1271 return false; 1272 } 1273 1274 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1275 @Override 1276 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1277 int deviceType = Integer.parseInt(label); 1278 sendDataActivityBroadcast(deviceType, active, tsNanos); 1279 } 1280 }; 1281 1282 /** 1283 * Ensure that a network route exists to deliver traffic to the specified 1284 * host via the specified network interface. 1285 * @param networkType the type of the network over which traffic to the 1286 * specified host is to be routed 1287 * @param hostAddress the IP address of the host to which the route is 1288 * desired 1289 * @return {@code true} on success, {@code false} on failure 1290 */ 1291 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1292 enforceChangePermission(); 1293 if (mProtectedNetworks.contains(networkType)) { 1294 enforceConnectivityInternalPermission(); 1295 } 1296 1297 InetAddress addr; 1298 try { 1299 addr = InetAddress.getByAddress(hostAddress); 1300 } catch (UnknownHostException e) { 1301 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1302 return false; 1303 } 1304 1305 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1306 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1307 return false; 1308 } 1309 1310 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1311 if (nai == null) { 1312 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1313 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1314 } else { 1315 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1316 } 1317 return false; 1318 } 1319 1320 DetailedState netState; 1321 synchronized (nai) { 1322 netState = nai.networkInfo.getDetailedState(); 1323 } 1324 1325 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1326 if (VDBG) { 1327 log("requestRouteToHostAddress on down network " 1328 + "(" + networkType + ") - dropped" 1329 + " netState=" + netState); 1330 } 1331 return false; 1332 } 1333 1334 final int uid = Binder.getCallingUid(); 1335 final long token = Binder.clearCallingIdentity(); 1336 try { 1337 LinkProperties lp; 1338 int netId; 1339 synchronized (nai) { 1340 lp = nai.linkProperties; 1341 netId = nai.network.netId; 1342 } 1343 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1344 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1345 return ok; 1346 } finally { 1347 Binder.restoreCallingIdentity(token); 1348 } 1349 } 1350 1351 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1352 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1353 if (bestRoute == null) { 1354 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1355 } else { 1356 String iface = bestRoute.getInterface(); 1357 if (bestRoute.getGateway().equals(addr)) { 1358 // if there is no better route, add the implied hostroute for our gateway 1359 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1360 } else { 1361 // if we will connect to this through another route, add a direct route 1362 // to it's gateway 1363 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1364 } 1365 } 1366 if (DBG) log("Adding legacy route " + bestRoute + 1367 " for UID/PID " + uid + "/" + Binder.getCallingPid()); 1368 try { 1369 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1370 } catch (Exception e) { 1371 // never crash - catch them all 1372 if (DBG) loge("Exception trying to add a route: " + e); 1373 return false; 1374 } 1375 return true; 1376 } 1377 1378 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1379 @Override 1380 public void onUidRulesChanged(int uid, int uidRules) { 1381 // caller is NPMS, since we only register with them 1382 if (LOGD_RULES) { 1383 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1384 } 1385 1386 synchronized (mRulesLock) { 1387 // skip update when we've already applied rules 1388 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1389 if (oldRules == uidRules) return; 1390 1391 mUidRules.put(uid, uidRules); 1392 } 1393 1394 // TODO: notify UID when it has requested targeted updates 1395 } 1396 1397 @Override 1398 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1399 // caller is NPMS, since we only register with them 1400 if (LOGD_RULES) { 1401 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1402 } 1403 1404 synchronized (mRulesLock) { 1405 mMeteredIfaces.clear(); 1406 for (String iface : meteredIfaces) { 1407 mMeteredIfaces.add(iface); 1408 } 1409 } 1410 } 1411 1412 @Override 1413 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1414 // caller is NPMS, since we only register with them 1415 if (LOGD_RULES) { 1416 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1417 } 1418 } 1419 }; 1420 1421 /** 1422 * Require that the caller is either in the same user or has appropriate permission to interact 1423 * across users. 1424 * 1425 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1426 */ 1427 private void enforceCrossUserPermission(int userId) { 1428 if (userId == UserHandle.getCallingUserId()) { 1429 // Not a cross-user call. 1430 return; 1431 } 1432 mContext.enforceCallingOrSelfPermission( 1433 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1434 "ConnectivityService"); 1435 } 1436 1437 private void enforceInternetPermission() { 1438 mContext.enforceCallingOrSelfPermission( 1439 android.Manifest.permission.INTERNET, 1440 "ConnectivityService"); 1441 } 1442 1443 private void enforceAccessPermission() { 1444 mContext.enforceCallingOrSelfPermission( 1445 android.Manifest.permission.ACCESS_NETWORK_STATE, 1446 "ConnectivityService"); 1447 } 1448 1449 private void enforceChangePermission() { 1450 ConnectivityManager.enforceChangePermission(mContext); 1451 } 1452 1453 private void enforceTetherAccessPermission() { 1454 mContext.enforceCallingOrSelfPermission( 1455 android.Manifest.permission.ACCESS_NETWORK_STATE, 1456 "ConnectivityService"); 1457 } 1458 1459 private void enforceConnectivityInternalPermission() { 1460 mContext.enforceCallingOrSelfPermission( 1461 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1462 "ConnectivityService"); 1463 } 1464 1465 private void enforceKeepalivePermission() { 1466 mContext.enforceCallingOrSelfPermission(KeepaliveTracker.PERMISSION, "ConnectivityService"); 1467 } 1468 1469 public void sendConnectedBroadcast(NetworkInfo info) { 1470 enforceConnectivityInternalPermission(); 1471 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1472 } 1473 1474 private void sendInetConditionBroadcast(NetworkInfo info) { 1475 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1476 } 1477 1478 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1479 if (mLockdownTracker != null) { 1480 info = mLockdownTracker.augmentNetworkInfo(info); 1481 } 1482 1483 Intent intent = new Intent(bcastType); 1484 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1485 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1486 if (info.isFailover()) { 1487 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1488 info.setFailover(false); 1489 } 1490 if (info.getReason() != null) { 1491 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1492 } 1493 if (info.getExtraInfo() != null) { 1494 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1495 info.getExtraInfo()); 1496 } 1497 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1498 return intent; 1499 } 1500 1501 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1502 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1503 } 1504 1505 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1506 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1507 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1508 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1509 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1510 final long ident = Binder.clearCallingIdentity(); 1511 try { 1512 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1513 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1514 } finally { 1515 Binder.restoreCallingIdentity(ident); 1516 } 1517 } 1518 1519 private void sendStickyBroadcast(Intent intent) { 1520 synchronized(this) { 1521 if (!mSystemReady) { 1522 mInitialBroadcast = new Intent(intent); 1523 } 1524 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1525 if (DBG) { 1526 log("sendStickyBroadcast: action=" + intent.getAction()); 1527 } 1528 1529 Bundle options = null; 1530 final long ident = Binder.clearCallingIdentity(); 1531 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1532 final NetworkInfo ni = intent.getParcelableExtra( 1533 ConnectivityManager.EXTRA_NETWORK_INFO); 1534 if (ni.getType() == ConnectivityManager.TYPE_MOBILE_SUPL) { 1535 intent.setAction(ConnectivityManager.CONNECTIVITY_ACTION_SUPL); 1536 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1537 } else { 1538 BroadcastOptions opts = BroadcastOptions.makeBasic(); 1539 opts.setMaxManifestReceiverApiLevel(Build.VERSION_CODES.M); 1540 options = opts.toBundle(); 1541 } 1542 final IBatteryStats bs = BatteryStatsService.getService(); 1543 try { 1544 bs.noteConnectivityChanged(intent.getIntExtra( 1545 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1546 ni != null ? ni.getState().toString() : "?"); 1547 } catch (RemoteException e) { 1548 } 1549 } 1550 try { 1551 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL, options); 1552 } finally { 1553 Binder.restoreCallingIdentity(ident); 1554 } 1555 } 1556 } 1557 1558 void systemReady() { 1559 loadGlobalProxy(); 1560 1561 synchronized(this) { 1562 mSystemReady = true; 1563 if (mInitialBroadcast != null) { 1564 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1565 mInitialBroadcast = null; 1566 } 1567 } 1568 // load the global proxy at startup 1569 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1570 1571 // Try bringing up tracker, but KeyStore won't be ready yet for secondary users so wait 1572 // for user to unlock device too. 1573 updateLockdownVpn(); 1574 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1575 mContext.registerReceiverAsUser(mUserPresentReceiver, UserHandle.ALL, filter, null, null); 1576 1577 // Configure whether mobile data is always on. 1578 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1579 1580 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1581 1582 mPermissionMonitor.startMonitoring(); 1583 } 1584 1585 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1586 @Override 1587 public void onReceive(Context context, Intent intent) { 1588 // User that sent this intent = user that was just unlocked 1589 final int unlockedUser = getSendingUserId(); 1590 1591 // Try creating lockdown tracker, since user present usually means 1592 // unlocked keystore. 1593 if (mUserManager.getUserInfo(unlockedUser).isPrimary() && 1594 LockdownVpnTracker.isEnabled()) { 1595 updateLockdownVpn(); 1596 } else { 1597 updateAlwaysOnVpn(unlockedUser); 1598 } 1599 } 1600 }; 1601 1602 /** 1603 * Setup data activity tracking for the given network. 1604 * 1605 * Every {@code setupDataActivityTracking} should be paired with a 1606 * {@link #removeDataActivityTracking} for cleanup. 1607 */ 1608 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1609 final String iface = networkAgent.linkProperties.getInterfaceName(); 1610 1611 final int timeout; 1612 int type = ConnectivityManager.TYPE_NONE; 1613 1614 if (networkAgent.networkCapabilities.hasTransport( 1615 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1616 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1617 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1618 10); 1619 type = ConnectivityManager.TYPE_MOBILE; 1620 } else if (networkAgent.networkCapabilities.hasTransport( 1621 NetworkCapabilities.TRANSPORT_WIFI)) { 1622 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1623 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1624 15); 1625 type = ConnectivityManager.TYPE_WIFI; 1626 } else { 1627 // do not track any other networks 1628 timeout = 0; 1629 } 1630 1631 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1632 try { 1633 mNetd.addIdleTimer(iface, timeout, type); 1634 } catch (Exception e) { 1635 // You shall not crash! 1636 loge("Exception in setupDataActivityTracking " + e); 1637 } 1638 } 1639 } 1640 1641 /** 1642 * Remove data activity tracking when network disconnects. 1643 */ 1644 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1645 final String iface = networkAgent.linkProperties.getInterfaceName(); 1646 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1647 1648 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1649 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1650 try { 1651 // the call fails silently if no idletimer setup for this interface 1652 mNetd.removeIdleTimer(iface); 1653 } catch (Exception e) { 1654 loge("Exception in removeDataActivityTracking " + e); 1655 } 1656 } 1657 } 1658 1659 /** 1660 * Reads the network specific MTU size from reources. 1661 * and set it on it's iface. 1662 */ 1663 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1664 final String iface = newLp.getInterfaceName(); 1665 final int mtu = newLp.getMtu(); 1666 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1667 if (VDBG) log("identical MTU - not setting"); 1668 return; 1669 } 1670 1671 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1672 loge("Unexpected mtu value: " + mtu + ", " + iface); 1673 return; 1674 } 1675 1676 // Cannot set MTU without interface name 1677 if (TextUtils.isEmpty(iface)) { 1678 loge("Setting MTU size with null iface."); 1679 return; 1680 } 1681 1682 try { 1683 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1684 mNetd.setMtu(iface, mtu); 1685 } catch (Exception e) { 1686 Slog.e(TAG, "exception in setMtu()" + e); 1687 } 1688 } 1689 1690 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1691 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1692 1693 // Overridden for testing purposes to avoid writing to SystemProperties. 1694 @VisibleForTesting 1695 protected int getDefaultTcpRwnd() { 1696 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1697 } 1698 1699 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1700 if (isDefaultNetwork(nai) == false) { 1701 return; 1702 } 1703 1704 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1705 String[] values = null; 1706 if (tcpBufferSizes != null) { 1707 values = tcpBufferSizes.split(","); 1708 } 1709 1710 if (values == null || values.length != 6) { 1711 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1712 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1713 values = tcpBufferSizes.split(","); 1714 } 1715 1716 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1717 1718 try { 1719 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1720 1721 final String prefix = "/sys/kernel/ipv4/tcp_"; 1722 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1723 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1724 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1725 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1726 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1727 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1728 mCurrentTcpBufferSizes = tcpBufferSizes; 1729 } catch (IOException e) { 1730 loge("Can't set TCP buffer sizes:" + e); 1731 } 1732 1733 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1734 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1735 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1736 if (rwndValue != 0) { 1737 SystemProperties.set(sysctlKey, rwndValue.toString()); 1738 } 1739 } 1740 1741 private void flushVmDnsCache() { 1742 /* 1743 * Tell the VMs to toss their DNS caches 1744 */ 1745 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1746 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1747 /* 1748 * Connectivity events can happen before boot has completed ... 1749 */ 1750 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1751 final long ident = Binder.clearCallingIdentity(); 1752 try { 1753 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1754 } finally { 1755 Binder.restoreCallingIdentity(ident); 1756 } 1757 } 1758 1759 @Override 1760 public int getRestoreDefaultNetworkDelay(int networkType) { 1761 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1762 NETWORK_RESTORE_DELAY_PROP_NAME); 1763 if(restoreDefaultNetworkDelayStr != null && 1764 restoreDefaultNetworkDelayStr.length() != 0) { 1765 try { 1766 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1767 } catch (NumberFormatException e) { 1768 } 1769 } 1770 // if the system property isn't set, use the value for the apn type 1771 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1772 1773 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1774 (mNetConfigs[networkType] != null)) { 1775 ret = mNetConfigs[networkType].restoreTime; 1776 } 1777 return ret; 1778 } 1779 1780 private boolean argsContain(String[] args, String target) { 1781 for (String arg : args) { 1782 if (arg.equals(target)) return true; 1783 } 1784 return false; 1785 } 1786 1787 @Override 1788 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1789 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1790 if (mContext.checkCallingOrSelfPermission( 1791 android.Manifest.permission.DUMP) 1792 != PackageManager.PERMISSION_GRANTED) { 1793 pw.println("Permission Denial: can't dump ConnectivityService " + 1794 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1795 Binder.getCallingUid()); 1796 return; 1797 } 1798 1799 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1800 if (argsContain(args, "--diag")) { 1801 final long DIAG_TIME_MS = 5000; 1802 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1803 // Start gathering diagnostic information. 1804 netDiags.add(new NetworkDiagnostics( 1805 nai.network, 1806 new LinkProperties(nai.linkProperties), // Must be a copy. 1807 DIAG_TIME_MS)); 1808 } 1809 1810 for (NetworkDiagnostics netDiag : netDiags) { 1811 pw.println(); 1812 netDiag.waitForMeasurements(); 1813 netDiag.dump(pw); 1814 } 1815 1816 return; 1817 } 1818 1819 pw.print("NetworkFactories for:"); 1820 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1821 pw.print(" " + nfi.name); 1822 } 1823 pw.println(); 1824 pw.println(); 1825 1826 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 1827 pw.print("Active default network: "); 1828 if (defaultNai == null) { 1829 pw.println("none"); 1830 } else { 1831 pw.println(defaultNai.network.netId); 1832 } 1833 pw.println(); 1834 1835 pw.println("Current Networks:"); 1836 pw.increaseIndent(); 1837 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1838 pw.println(nai.toString()); 1839 pw.increaseIndent(); 1840 pw.println("Requests:"); 1841 pw.increaseIndent(); 1842 for (int i = 0; i < nai.networkRequests.size(); i++) { 1843 pw.println(nai.networkRequests.valueAt(i).toString()); 1844 } 1845 pw.decreaseIndent(); 1846 pw.println("Lingered:"); 1847 pw.increaseIndent(); 1848 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1849 pw.decreaseIndent(); 1850 pw.decreaseIndent(); 1851 } 1852 pw.decreaseIndent(); 1853 pw.println(); 1854 1855 pw.println("Network Requests:"); 1856 pw.increaseIndent(); 1857 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1858 pw.println(nri.toString()); 1859 } 1860 pw.println(); 1861 pw.decreaseIndent(); 1862 1863 mLegacyTypeTracker.dump(pw); 1864 1865 synchronized (this) { 1866 pw.print("mNetTransitionWakeLock: currently " + 1867 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1868 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1869 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1870 } else { 1871 pw.println(", last requested never"); 1872 } 1873 } 1874 1875 pw.println(); 1876 mTethering.dump(fd, pw, args); 1877 1878 pw.println(); 1879 mKeepaliveTracker.dump(pw); 1880 1881 if (mInetLog != null && mInetLog.size() > 0) { 1882 pw.println(); 1883 pw.println("Inet condition reports:"); 1884 pw.increaseIndent(); 1885 for(int i = 0; i < mInetLog.size(); i++) { 1886 pw.println(mInetLog.get(i)); 1887 } 1888 pw.decreaseIndent(); 1889 } 1890 1891 if (argsContain(args, "--short") == false) { 1892 pw.println(); 1893 synchronized (mValidationLogs) { 1894 pw.println("mValidationLogs (most recent first):"); 1895 for (Pair<Network,ReadOnlyLocalLog> p : mValidationLogs) { 1896 pw.println(p.first); 1897 pw.increaseIndent(); 1898 p.second.dump(fd, pw, args); 1899 pw.decreaseIndent(); 1900 } 1901 } 1902 1903 pw.println(); 1904 pw.println("mNetworkRequestInfoLogs (most recent first):"); 1905 pw.increaseIndent(); 1906 mNetworkRequestInfoLogs.reverseDump(fd, pw, args); 1907 pw.decreaseIndent(); 1908 } 1909 } 1910 1911 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1912 if (nai.network == null) return false; 1913 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1914 if (officialNai != null && officialNai.equals(nai)) return true; 1915 if (officialNai != null || VDBG) { 1916 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1917 " - " + nai); 1918 } 1919 return false; 1920 } 1921 1922 private boolean isRequest(NetworkRequest request) { 1923 return mNetworkRequests.get(request).isRequest; 1924 } 1925 1926 // must be stateless - things change under us. 1927 private class NetworkStateTrackerHandler extends Handler { 1928 public NetworkStateTrackerHandler(Looper looper) { 1929 super(looper); 1930 } 1931 1932 @Override 1933 public void handleMessage(Message msg) { 1934 NetworkInfo info; 1935 switch (msg.what) { 1936 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1937 handleAsyncChannelHalfConnect(msg); 1938 break; 1939 } 1940 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1941 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1942 if (nai != null) nai.asyncChannel.disconnect(); 1943 break; 1944 } 1945 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1946 handleAsyncChannelDisconnected(msg); 1947 break; 1948 } 1949 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1950 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1951 if (nai == null) { 1952 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1953 } else { 1954 final NetworkCapabilities networkCapabilities = 1955 (NetworkCapabilities)msg.obj; 1956 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL) || 1957 networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 1958 Slog.wtf(TAG, "BUG: " + nai + " has CS-managed capability."); 1959 } 1960 if (nai.created && !nai.networkCapabilities.equalImmutableCapabilities( 1961 networkCapabilities)) { 1962 Slog.wtf(TAG, "BUG: " + nai + " changed immutable capabilities: " 1963 + nai.networkCapabilities + " -> " + networkCapabilities); 1964 } 1965 updateCapabilities(nai, networkCapabilities); 1966 } 1967 break; 1968 } 1969 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1970 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1971 if (nai == null) { 1972 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1973 } else { 1974 if (VDBG) { 1975 log("Update of LinkProperties for " + nai.name() + 1976 "; created=" + nai.created); 1977 } 1978 LinkProperties oldLp = nai.linkProperties; 1979 synchronized (nai) { 1980 nai.linkProperties = (LinkProperties)msg.obj; 1981 } 1982 if (nai.created) updateLinkProperties(nai, oldLp); 1983 } 1984 break; 1985 } 1986 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1987 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1988 if (nai == null) { 1989 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1990 break; 1991 } 1992 info = (NetworkInfo) msg.obj; 1993 updateNetworkInfo(nai, info); 1994 break; 1995 } 1996 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1997 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1998 if (nai == null) { 1999 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 2000 break; 2001 } 2002 Integer score = (Integer) msg.obj; 2003 if (score != null) updateNetworkScore(nai, score.intValue()); 2004 break; 2005 } 2006 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 2007 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2008 if (nai == null) { 2009 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 2010 break; 2011 } 2012 try { 2013 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2014 } catch (Exception e) { 2015 // Never crash! 2016 loge("Exception in addVpnUidRanges: " + e); 2017 } 2018 break; 2019 } 2020 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 2021 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2022 if (nai == null) { 2023 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 2024 break; 2025 } 2026 try { 2027 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2028 } catch (Exception e) { 2029 // Never crash! 2030 loge("Exception in removeVpnUidRanges: " + e); 2031 } 2032 break; 2033 } 2034 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 2035 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2036 if (nai == null) { 2037 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 2038 break; 2039 } 2040 if (nai.created && !nai.networkMisc.explicitlySelected) { 2041 loge("ERROR: created network explicitly selected."); 2042 } 2043 nai.networkMisc.explicitlySelected = true; 2044 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 2045 break; 2046 } 2047 case NetworkAgent.EVENT_PACKET_KEEPALIVE: { 2048 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2049 if (nai == null) { 2050 loge("EVENT_PACKET_KEEPALIVE from unknown NetworkAgent"); 2051 break; 2052 } 2053 mKeepaliveTracker.handleEventPacketKeepalive(nai, msg); 2054 break; 2055 } 2056 case NetworkMonitor.EVENT_NETWORK_TESTED: { 2057 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2058 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_TESTED")) { 2059 final boolean valid = 2060 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2061 if (DBG) log(nai.name() + " validation " + (valid ? " passed" : "failed")); 2062 if (valid != nai.lastValidated) { 2063 final int oldScore = nai.getCurrentScore(); 2064 nai.lastValidated = valid; 2065 nai.everValidated |= valid; 2066 updateCapabilities(nai, nai.networkCapabilities); 2067 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2068 if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); 2069 } 2070 updateInetCondition(nai); 2071 // Let the NetworkAgent know the state of its network 2072 nai.asyncChannel.sendMessage( 2073 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2074 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2075 0, null); 2076 } 2077 break; 2078 } 2079 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2080 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2081 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 2082 handleLingerComplete(nai); 2083 } 2084 break; 2085 } 2086 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2087 final int netId = msg.arg2; 2088 final boolean visible = (msg.arg1 != 0); 2089 final NetworkAgentInfo nai; 2090 synchronized (mNetworkForNetId) { 2091 nai = mNetworkForNetId.get(netId); 2092 } 2093 // If captive portal status has changed, update capabilities. 2094 if (nai != null && (visible != nai.lastCaptivePortalDetected)) { 2095 nai.lastCaptivePortalDetected = visible; 2096 nai.everCaptivePortalDetected |= visible; 2097 updateCapabilities(nai, nai.networkCapabilities); 2098 } 2099 if (!visible) { 2100 setProvNotificationVisibleIntent(false, netId, null, 0, null, null, false); 2101 } else { 2102 if (nai == null) { 2103 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2104 break; 2105 } 2106 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2107 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), 2108 (PendingIntent)msg.obj, nai.networkMisc.explicitlySelected); 2109 } 2110 break; 2111 } 2112 } 2113 } 2114 } 2115 2116 private void linger(NetworkAgentInfo nai) { 2117 nai.lingering = true; 2118 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 2119 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 2120 } 2121 2122 // Cancel any lingering so the linger timeout doesn't teardown a network. 2123 // This should be called when a network begins satisfying a NetworkRequest. 2124 // Note: depending on what state the NetworkMonitor is in (e.g., 2125 // if it's awaiting captive portal login, or if validation failed), this 2126 // may trigger a re-evaluation of the network. 2127 private void unlinger(NetworkAgentInfo nai) { 2128 nai.networkLingered.clear(); 2129 if (!nai.lingering) return; 2130 nai.lingering = false; 2131 if (VDBG) log("Canceling linger of " + nai.name()); 2132 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2133 } 2134 2135 private void handleAsyncChannelHalfConnect(Message msg) { 2136 AsyncChannel ac = (AsyncChannel) msg.obj; 2137 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2138 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2139 if (VDBG) log("NetworkFactory connected"); 2140 // A network factory has connected. Send it all current NetworkRequests. 2141 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2142 if (nri.isRequest == false) continue; 2143 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2144 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2145 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2146 } 2147 } else { 2148 loge("Error connecting NetworkFactory"); 2149 mNetworkFactoryInfos.remove(msg.obj); 2150 } 2151 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2152 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2153 if (VDBG) log("NetworkAgent connected"); 2154 // A network agent has requested a connection. Establish the connection. 2155 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2156 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2157 } else { 2158 loge("Error connecting NetworkAgent"); 2159 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2160 if (nai != null) { 2161 final boolean wasDefault = isDefaultNetwork(nai); 2162 synchronized (mNetworkForNetId) { 2163 mNetworkForNetId.remove(nai.network.netId); 2164 mNetIdInUse.delete(nai.network.netId); 2165 } 2166 // Just in case. 2167 mLegacyTypeTracker.remove(nai, wasDefault); 2168 } 2169 } 2170 } 2171 } 2172 2173 private void handleAsyncChannelDisconnected(Message msg) { 2174 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2175 if (nai != null) { 2176 if (DBG) { 2177 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2178 } 2179 // A network agent has disconnected. 2180 // TODO - if we move the logic to the network agent (have them disconnect 2181 // because they lost all their requests or because their score isn't good) 2182 // then they would disconnect organically, report their new state and then 2183 // disconnect the channel. 2184 if (nai.networkInfo.isConnected()) { 2185 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2186 null, null); 2187 } 2188 final boolean wasDefault = isDefaultNetwork(nai); 2189 if (wasDefault) { 2190 mDefaultInetConditionPublished = 0; 2191 } 2192 notifyIfacesChanged(); 2193 // TODO - we shouldn't send CALLBACK_LOST to requests that can be satisfied 2194 // by other networks that are already connected. Perhaps that can be done by 2195 // sending all CALLBACK_LOST messages (for requests, not listens) at the end 2196 // of rematchAllNetworksAndRequests 2197 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2198 mKeepaliveTracker.handleStopAllKeepalives(nai, 2199 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 2200 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2201 mNetworkAgentInfos.remove(msg.replyTo); 2202 updateClat(null, nai.linkProperties, nai); 2203 synchronized (mNetworkForNetId) { 2204 // Remove the NetworkAgent, but don't mark the netId as 2205 // available until we've told netd to delete it below. 2206 mNetworkForNetId.remove(nai.network.netId); 2207 } 2208 // Remove all previously satisfied requests. 2209 for (int i = 0; i < nai.networkRequests.size(); i++) { 2210 NetworkRequest request = nai.networkRequests.valueAt(i); 2211 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2212 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2213 mNetworkForRequestId.remove(request.requestId); 2214 sendUpdatedScoreToFactories(request, 0); 2215 } 2216 } 2217 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2218 removeDataActivityTracking(nai); 2219 notifyLockdownVpn(nai); 2220 requestNetworkTransitionWakelock(nai.name()); 2221 } 2222 mLegacyTypeTracker.remove(nai, wasDefault); 2223 rematchAllNetworksAndRequests(null, 0); 2224 if (nai.created) { 2225 // Tell netd to clean up the configuration for this network 2226 // (routing rules, DNS, etc). 2227 // This may be slow as it requires a lot of netd shelling out to ip and 2228 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2229 // after we've rematched networks with requests which should make a potential 2230 // fallback network the default or requested a new network from the 2231 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2232 // long time. 2233 try { 2234 mNetd.removeNetwork(nai.network.netId); 2235 } catch (Exception e) { 2236 loge("Exception removing network: " + e); 2237 } 2238 } 2239 synchronized (mNetworkForNetId) { 2240 mNetIdInUse.delete(nai.network.netId); 2241 } 2242 } else { 2243 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2244 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2245 } 2246 } 2247 2248 // If this method proves to be too slow then we can maintain a separate 2249 // pendingIntent => NetworkRequestInfo map. 2250 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2251 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2252 Intent intent = pendingIntent.getIntent(); 2253 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2254 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2255 if (existingPendingIntent != null && 2256 existingPendingIntent.getIntent().filterEquals(intent)) { 2257 return entry.getValue(); 2258 } 2259 } 2260 return null; 2261 } 2262 2263 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2264 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2265 2266 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2267 if (existingRequest != null) { // remove the existing request. 2268 if (DBG) log("Replacing " + existingRequest.request + " with " 2269 + nri.request + " because their intents matched."); 2270 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2271 } 2272 handleRegisterNetworkRequest(nri); 2273 } 2274 2275 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2276 mNetworkRequests.put(nri.request, nri); 2277 mNetworkRequestInfoLogs.log("REGISTER " + nri); 2278 if (!nri.isRequest) { 2279 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2280 if (nri.request.networkCapabilities.hasSignalStrength() && 2281 network.satisfiesImmutableCapabilitiesOf(nri.request)) { 2282 updateSignalStrengthThresholds(network, "REGISTER", nri.request); 2283 } 2284 } 2285 } 2286 rematchAllNetworksAndRequests(null, 0); 2287 if (nri.isRequest && mNetworkForRequestId.get(nri.request.requestId) == null) { 2288 sendUpdatedScoreToFactories(nri.request, 0); 2289 } 2290 } 2291 2292 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2293 int callingUid) { 2294 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2295 if (nri != null) { 2296 handleReleaseNetworkRequest(nri.request, callingUid); 2297 } 2298 } 2299 2300 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2301 // This is whether it is satisfying any NetworkRequests or were it to become validated, 2302 // would it have a chance of satisfying any NetworkRequests. 2303 private boolean unneeded(NetworkAgentInfo nai) { 2304 if (!nai.created || nai.isVPN() || nai.lingering) return false; 2305 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2306 // If this Network is already the highest scoring Network for a request, or if 2307 // there is hope for it to become one if it validated, then it is needed. 2308 if (nri.isRequest && nai.satisfies(nri.request) && 2309 (nai.networkRequests.get(nri.request.requestId) != null || 2310 // Note that this catches two important cases: 2311 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2312 // is currently satisfying the request. This is desirable when 2313 // cellular ends up validating but WiFi does not. 2314 // 2. Unvalidated WiFi will not be reaped when validated cellular 2315 // is currently satisfying the request. This is desirable when 2316 // WiFi ends up validating and out scoring cellular. 2317 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2318 nai.getCurrentScoreAsValidated())) { 2319 return false; 2320 } 2321 } 2322 return true; 2323 } 2324 2325 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2326 NetworkRequestInfo nri = mNetworkRequests.get(request); 2327 if (nri != null) { 2328 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2329 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2330 return; 2331 } 2332 if (DBG) log("releasing NetworkRequest " + request); 2333 nri.unlinkDeathRecipient(); 2334 mNetworkRequests.remove(request); 2335 mNetworkRequestInfoLogs.log("RELEASE " + nri); 2336 if (nri.isRequest) { 2337 // Find all networks that are satisfying this request and remove the request 2338 // from their request lists. 2339 // TODO - it's my understanding that for a request there is only a single 2340 // network satisfying it, so this loop is wasteful 2341 boolean wasKept = false; 2342 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2343 if (nai.networkRequests.get(nri.request.requestId) != null) { 2344 nai.networkRequests.remove(nri.request.requestId); 2345 if (DBG) { 2346 log(" Removing from current network " + nai.name() + 2347 ", leaving " + nai.networkRequests.size() + 2348 " requests."); 2349 } 2350 if (unneeded(nai)) { 2351 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2352 teardownUnneededNetwork(nai); 2353 } else { 2354 // suspect there should only be one pass through here 2355 // but if any were kept do the check below 2356 wasKept |= true; 2357 } 2358 } 2359 } 2360 2361 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2362 if (nai != null) { 2363 mNetworkForRequestId.remove(nri.request.requestId); 2364 } 2365 // Maintain the illusion. When this request arrived, we might have pretended 2366 // that a network connected to serve it, even though the network was already 2367 // connected. Now that this request has gone away, we might have to pretend 2368 // that the network disconnected. LegacyTypeTracker will generate that 2369 // phantom disconnect for this type. 2370 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2371 boolean doRemove = true; 2372 if (wasKept) { 2373 // check if any of the remaining requests for this network are for the 2374 // same legacy type - if so, don't remove the nai 2375 for (int i = 0; i < nai.networkRequests.size(); i++) { 2376 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2377 if (otherRequest.legacyType == nri.request.legacyType && 2378 isRequest(otherRequest)) { 2379 if (DBG) log(" still have other legacy request - leaving"); 2380 doRemove = false; 2381 } 2382 } 2383 } 2384 2385 if (doRemove) { 2386 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2387 } 2388 } 2389 2390 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2391 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2392 nri.request); 2393 } 2394 } else { 2395 // listens don't have a singular affectedNetwork. Check all networks to see 2396 // if this listen request applies and remove it. 2397 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2398 nai.networkRequests.remove(nri.request.requestId); 2399 if (nri.request.networkCapabilities.hasSignalStrength() && 2400 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 2401 updateSignalStrengthThresholds(nai, "RELEASE", nri.request); 2402 } 2403 } 2404 } 2405 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2406 } 2407 } 2408 2409 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2410 enforceConnectivityInternalPermission(); 2411 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2412 accept ? 1 : 0, always ? 1: 0, network)); 2413 } 2414 2415 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2416 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2417 " accept=" + accept + " always=" + always); 2418 2419 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2420 if (nai == null) { 2421 // Nothing to do. 2422 return; 2423 } 2424 2425 if (nai.everValidated) { 2426 // The network validated while the dialog box was up. Take no action. 2427 return; 2428 } 2429 2430 if (!nai.networkMisc.explicitlySelected) { 2431 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2432 } 2433 2434 if (accept != nai.networkMisc.acceptUnvalidated) { 2435 int oldScore = nai.getCurrentScore(); 2436 nai.networkMisc.acceptUnvalidated = accept; 2437 rematchAllNetworksAndRequests(nai, oldScore); 2438 sendUpdatedScoreToFactories(nai); 2439 } 2440 2441 if (always) { 2442 nai.asyncChannel.sendMessage( 2443 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2444 } 2445 2446 if (!accept) { 2447 // Tell the NetworkAgent to not automatically reconnect to the network. 2448 nai.asyncChannel.sendMessage(NetworkAgent.CMD_PREVENT_AUTOMATIC_RECONNECT); 2449 // Teardown the nework. 2450 teardownUnneededNetwork(nai); 2451 } 2452 2453 } 2454 2455 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2456 if (DBG) log("scheduleUnvalidatedPrompt " + nai.network); 2457 mHandler.sendMessageDelayed( 2458 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2459 PROMPT_UNVALIDATED_DELAY_MS); 2460 } 2461 2462 private void handlePromptUnvalidated(Network network) { 2463 if (DBG) log("handlePromptUnvalidated " + network); 2464 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2465 2466 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2467 // we haven't already been told to switch to it regardless of whether it validated or not. 2468 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2469 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2470 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2471 return; 2472 } 2473 2474 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2475 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2476 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2477 intent.setClassName("com.android.settings", 2478 "com.android.settings.wifi.WifiNoInternetDialog"); 2479 2480 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2481 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2482 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2483 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent, true); 2484 } 2485 2486 private class InternalHandler extends Handler { 2487 public InternalHandler(Looper looper) { 2488 super(looper); 2489 } 2490 2491 @Override 2492 public void handleMessage(Message msg) { 2493 switch (msg.what) { 2494 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2495 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2496 String causedBy = null; 2497 synchronized (ConnectivityService.this) { 2498 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2499 mNetTransitionWakeLock.isHeld()) { 2500 mNetTransitionWakeLock.release(); 2501 causedBy = mNetTransitionWakeLockCausedBy; 2502 } else { 2503 break; 2504 } 2505 } 2506 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2507 log("Failed to find a new network - expiring NetTransition Wakelock"); 2508 } else { 2509 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2510 " cleared because we found a replacement network"); 2511 } 2512 break; 2513 } 2514 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2515 handleDeprecatedGlobalHttpProxy(); 2516 break; 2517 } 2518 case EVENT_PROXY_HAS_CHANGED: { 2519 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2520 break; 2521 } 2522 case EVENT_REGISTER_NETWORK_FACTORY: { 2523 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2524 break; 2525 } 2526 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2527 handleUnregisterNetworkFactory((Messenger)msg.obj); 2528 break; 2529 } 2530 case EVENT_REGISTER_NETWORK_AGENT: { 2531 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2532 break; 2533 } 2534 case EVENT_REGISTER_NETWORK_REQUEST: 2535 case EVENT_REGISTER_NETWORK_LISTENER: { 2536 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2537 break; 2538 } 2539 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2540 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2541 handleRegisterNetworkRequestWithIntent(msg); 2542 break; 2543 } 2544 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2545 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2546 break; 2547 } 2548 case EVENT_RELEASE_NETWORK_REQUEST: { 2549 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2550 break; 2551 } 2552 case EVENT_SET_ACCEPT_UNVALIDATED: { 2553 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2554 break; 2555 } 2556 case EVENT_PROMPT_UNVALIDATED: { 2557 handlePromptUnvalidated((Network) msg.obj); 2558 break; 2559 } 2560 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2561 handleMobileDataAlwaysOn(); 2562 break; 2563 } 2564 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2565 case NetworkAgent.CMD_START_PACKET_KEEPALIVE: { 2566 mKeepaliveTracker.handleStartKeepalive(msg); 2567 break; 2568 } 2569 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2570 case NetworkAgent.CMD_STOP_PACKET_KEEPALIVE: { 2571 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork((Network) msg.obj); 2572 int slot = msg.arg1; 2573 int reason = msg.arg2; 2574 mKeepaliveTracker.handleStopKeepalive(nai, slot, reason); 2575 break; 2576 } 2577 case EVENT_SYSTEM_READY: { 2578 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2579 nai.networkMonitor.systemReady = true; 2580 } 2581 break; 2582 } 2583 } 2584 } 2585 } 2586 2587 // javadoc from interface 2588 public int tether(String iface) { 2589 ConnectivityManager.enforceTetherChangePermission(mContext); 2590 if (isTetheringSupported()) { 2591 return mTethering.tether(iface); 2592 } else { 2593 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2594 } 2595 } 2596 2597 // javadoc from interface 2598 public int untether(String iface) { 2599 ConnectivityManager.enforceTetherChangePermission(mContext); 2600 2601 if (isTetheringSupported()) { 2602 return mTethering.untether(iface); 2603 } else { 2604 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2605 } 2606 } 2607 2608 // javadoc from interface 2609 public int getLastTetherError(String iface) { 2610 enforceTetherAccessPermission(); 2611 2612 if (isTetheringSupported()) { 2613 return mTethering.getLastTetherError(iface); 2614 } else { 2615 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2616 } 2617 } 2618 2619 // TODO - proper iface API for selection by property, inspection, etc 2620 public String[] getTetherableUsbRegexs() { 2621 enforceTetherAccessPermission(); 2622 if (isTetheringSupported()) { 2623 return mTethering.getTetherableUsbRegexs(); 2624 } else { 2625 return new String[0]; 2626 } 2627 } 2628 2629 public String[] getTetherableWifiRegexs() { 2630 enforceTetherAccessPermission(); 2631 if (isTetheringSupported()) { 2632 return mTethering.getTetherableWifiRegexs(); 2633 } else { 2634 return new String[0]; 2635 } 2636 } 2637 2638 public String[] getTetherableBluetoothRegexs() { 2639 enforceTetherAccessPermission(); 2640 if (isTetheringSupported()) { 2641 return mTethering.getTetherableBluetoothRegexs(); 2642 } else { 2643 return new String[0]; 2644 } 2645 } 2646 2647 public int setUsbTethering(boolean enable) { 2648 ConnectivityManager.enforceTetherChangePermission(mContext); 2649 if (isTetheringSupported()) { 2650 return mTethering.setUsbTethering(enable); 2651 } else { 2652 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2653 } 2654 } 2655 2656 // TODO - move iface listing, queries, etc to new module 2657 // javadoc from interface 2658 public String[] getTetherableIfaces() { 2659 enforceTetherAccessPermission(); 2660 return mTethering.getTetherableIfaces(); 2661 } 2662 2663 public String[] getTetheredIfaces() { 2664 enforceTetherAccessPermission(); 2665 return mTethering.getTetheredIfaces(); 2666 } 2667 2668 public String[] getTetheringErroredIfaces() { 2669 enforceTetherAccessPermission(); 2670 return mTethering.getErroredIfaces(); 2671 } 2672 2673 public String[] getTetheredDhcpRanges() { 2674 enforceConnectivityInternalPermission(); 2675 return mTethering.getTetheredDhcpRanges(); 2676 } 2677 2678 // if ro.tether.denied = true we default to no tethering 2679 // gservices could set the secure setting to 1 though to enable it on a build where it 2680 // had previously been turned off. 2681 public boolean isTetheringSupported() { 2682 enforceTetherAccessPermission(); 2683 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2684 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2685 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2686 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2687 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2688 mTethering.getTetherableWifiRegexs().length != 0 || 2689 mTethering.getTetherableBluetoothRegexs().length != 0) && 2690 mTethering.getUpstreamIfaceTypes().length != 0); 2691 } 2692 2693 // Called when we lose the default network and have no replacement yet. 2694 // This will automatically be cleared after X seconds or a new default network 2695 // becomes CONNECTED, whichever happens first. The timer is started by the 2696 // first caller and not restarted by subsequent callers. 2697 private void requestNetworkTransitionWakelock(String forWhom) { 2698 int serialNum = 0; 2699 synchronized (this) { 2700 if (mNetTransitionWakeLock.isHeld()) return; 2701 serialNum = ++mNetTransitionWakeLockSerialNumber; 2702 mNetTransitionWakeLock.acquire(); 2703 mNetTransitionWakeLockCausedBy = forWhom; 2704 } 2705 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2706 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2707 mNetTransitionWakeLockTimeout); 2708 return; 2709 } 2710 2711 // 100 percent is full good, 0 is full bad. 2712 public void reportInetCondition(int networkType, int percentage) { 2713 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2714 if (nai == null) return; 2715 reportNetworkConnectivity(nai.network, percentage > 50); 2716 } 2717 2718 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2719 enforceAccessPermission(); 2720 enforceInternetPermission(); 2721 2722 NetworkAgentInfo nai; 2723 if (network == null) { 2724 nai = getDefaultNetwork(); 2725 } else { 2726 nai = getNetworkAgentInfoForNetwork(network); 2727 } 2728 if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || 2729 nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { 2730 return; 2731 } 2732 // Revalidate if the app report does not match our current validated state. 2733 if (hasConnectivity == nai.lastValidated) return; 2734 final int uid = Binder.getCallingUid(); 2735 if (DBG) { 2736 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2737 ") by " + uid); 2738 } 2739 synchronized (nai) { 2740 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2741 // which isn't meant to work on uncreated networks. 2742 if (!nai.created) return; 2743 2744 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2745 2746 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2747 } 2748 } 2749 2750 private ProxyInfo getDefaultProxy() { 2751 // this information is already available as a world read/writable jvm property 2752 // so this API change wouldn't have a benifit. It also breaks the passing 2753 // of proxy info to all the JVMs. 2754 // enforceAccessPermission(); 2755 synchronized (mProxyLock) { 2756 ProxyInfo ret = mGlobalProxy; 2757 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2758 return ret; 2759 } 2760 } 2761 2762 public ProxyInfo getProxyForNetwork(Network network) { 2763 if (network == null) return getDefaultProxy(); 2764 final ProxyInfo globalProxy = getGlobalProxy(); 2765 if (globalProxy != null) return globalProxy; 2766 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2767 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2768 // caller may not have. 2769 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2770 if (nai == null) return null; 2771 synchronized (nai) { 2772 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2773 if (proxyInfo == null) return null; 2774 return new ProxyInfo(proxyInfo); 2775 } 2776 } 2777 2778 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2779 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2780 // proxy is null then there is no proxy in place). 2781 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2782 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2783 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2784 proxy = null; 2785 } 2786 return proxy; 2787 } 2788 2789 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2790 // better for determining if a new proxy broadcast is necessary: 2791 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2792 // avoid unnecessary broadcasts. 2793 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2794 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2795 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2796 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2797 // all set. 2798 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2799 a = canonicalizeProxyInfo(a); 2800 b = canonicalizeProxyInfo(b); 2801 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2802 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2803 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2804 } 2805 2806 public void setGlobalProxy(ProxyInfo proxyProperties) { 2807 enforceConnectivityInternalPermission(); 2808 2809 synchronized (mProxyLock) { 2810 if (proxyProperties == mGlobalProxy) return; 2811 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2812 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2813 2814 String host = ""; 2815 int port = 0; 2816 String exclList = ""; 2817 String pacFileUrl = ""; 2818 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2819 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2820 if (!proxyProperties.isValid()) { 2821 if (DBG) 2822 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2823 return; 2824 } 2825 mGlobalProxy = new ProxyInfo(proxyProperties); 2826 host = mGlobalProxy.getHost(); 2827 port = mGlobalProxy.getPort(); 2828 exclList = mGlobalProxy.getExclusionListAsString(); 2829 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2830 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2831 } 2832 } else { 2833 mGlobalProxy = null; 2834 } 2835 ContentResolver res = mContext.getContentResolver(); 2836 final long token = Binder.clearCallingIdentity(); 2837 try { 2838 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2839 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2840 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2841 exclList); 2842 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2843 } finally { 2844 Binder.restoreCallingIdentity(token); 2845 } 2846 2847 if (mGlobalProxy == null) { 2848 proxyProperties = mDefaultProxy; 2849 } 2850 sendProxyBroadcast(proxyProperties); 2851 } 2852 } 2853 2854 private void loadGlobalProxy() { 2855 ContentResolver res = mContext.getContentResolver(); 2856 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2857 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2858 String exclList = Settings.Global.getString(res, 2859 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2860 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2861 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2862 ProxyInfo proxyProperties; 2863 if (!TextUtils.isEmpty(pacFileUrl)) { 2864 proxyProperties = new ProxyInfo(pacFileUrl); 2865 } else { 2866 proxyProperties = new ProxyInfo(host, port, exclList); 2867 } 2868 if (!proxyProperties.isValid()) { 2869 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2870 return; 2871 } 2872 2873 synchronized (mProxyLock) { 2874 mGlobalProxy = proxyProperties; 2875 } 2876 } 2877 } 2878 2879 public ProxyInfo getGlobalProxy() { 2880 // this information is already available as a world read/writable jvm property 2881 // so this API change wouldn't have a benifit. It also breaks the passing 2882 // of proxy info to all the JVMs. 2883 // enforceAccessPermission(); 2884 synchronized (mProxyLock) { 2885 return mGlobalProxy; 2886 } 2887 } 2888 2889 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2890 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2891 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2892 proxy = null; 2893 } 2894 synchronized (mProxyLock) { 2895 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2896 if (mDefaultProxy == proxy) return; // catches repeated nulls 2897 if (proxy != null && !proxy.isValid()) { 2898 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2899 return; 2900 } 2901 2902 // This call could be coming from the PacManager, containing the port of the local 2903 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2904 // global (to get the correct local port), and send a broadcast. 2905 // TODO: Switch PacManager to have its own message to send back rather than 2906 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2907 if ((mGlobalProxy != null) && (proxy != null) 2908 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2909 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2910 mGlobalProxy = proxy; 2911 sendProxyBroadcast(mGlobalProxy); 2912 return; 2913 } 2914 mDefaultProxy = proxy; 2915 2916 if (mGlobalProxy != null) return; 2917 if (!mDefaultProxyDisabled) { 2918 sendProxyBroadcast(proxy); 2919 } 2920 } 2921 } 2922 2923 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2924 // This method gets called when any network changes proxy, but the broadcast only ever contains 2925 // the default proxy (even if it hasn't changed). 2926 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2927 // world where an app might be bound to a non-default network. 2928 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2929 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2930 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2931 2932 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2933 sendProxyBroadcast(getDefaultProxy()); 2934 } 2935 } 2936 2937 private void handleDeprecatedGlobalHttpProxy() { 2938 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2939 Settings.Global.HTTP_PROXY); 2940 if (!TextUtils.isEmpty(proxy)) { 2941 String data[] = proxy.split(":"); 2942 if (data.length == 0) { 2943 return; 2944 } 2945 2946 String proxyHost = data[0]; 2947 int proxyPort = 8080; 2948 if (data.length > 1) { 2949 try { 2950 proxyPort = Integer.parseInt(data[1]); 2951 } catch (NumberFormatException e) { 2952 return; 2953 } 2954 } 2955 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2956 setGlobalProxy(p); 2957 } 2958 } 2959 2960 private void sendProxyBroadcast(ProxyInfo proxy) { 2961 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2962 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2963 if (DBG) log("sending Proxy Broadcast for " + proxy); 2964 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2965 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2966 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2967 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2968 final long ident = Binder.clearCallingIdentity(); 2969 try { 2970 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2971 } finally { 2972 Binder.restoreCallingIdentity(ident); 2973 } 2974 } 2975 2976 private static class SettingsObserver extends ContentObserver { 2977 final private HashMap<Uri, Integer> mUriEventMap; 2978 final private Context mContext; 2979 final private Handler mHandler; 2980 2981 SettingsObserver(Context context, Handler handler) { 2982 super(null); 2983 mUriEventMap = new HashMap<Uri, Integer>(); 2984 mContext = context; 2985 mHandler = handler; 2986 } 2987 2988 void observe(Uri uri, int what) { 2989 mUriEventMap.put(uri, what); 2990 final ContentResolver resolver = mContext.getContentResolver(); 2991 resolver.registerContentObserver(uri, false, this); 2992 } 2993 2994 @Override 2995 public void onChange(boolean selfChange) { 2996 Slog.wtf(TAG, "Should never be reached."); 2997 } 2998 2999 @Override 3000 public void onChange(boolean selfChange, Uri uri) { 3001 final Integer what = mUriEventMap.get(uri); 3002 if (what != null) { 3003 mHandler.obtainMessage(what.intValue()).sendToTarget(); 3004 } else { 3005 loge("No matching event to send for URI=" + uri); 3006 } 3007 } 3008 } 3009 3010 private static void log(String s) { 3011 Slog.d(TAG, s); 3012 } 3013 3014 private static void loge(String s) { 3015 Slog.e(TAG, s); 3016 } 3017 3018 private static <T> T checkNotNull(T value, String message) { 3019 if (value == null) { 3020 throw new NullPointerException(message); 3021 } 3022 return value; 3023 } 3024 3025 /** 3026 * Prepare for a VPN application. 3027 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3028 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3029 * 3030 * @param oldPackage Package name of the application which currently controls VPN, which will 3031 * be replaced. If there is no such application, this should should either be 3032 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3033 * @param newPackage Package name of the application which should gain control of VPN, or 3034 * {@code null} to disable. 3035 * @param userId User for whom to prepare the new VPN. 3036 * 3037 * @hide 3038 */ 3039 @Override 3040 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3041 int userId) { 3042 enforceCrossUserPermission(userId); 3043 throwIfLockdownEnabled(); 3044 3045 synchronized(mVpns) { 3046 Vpn vpn = mVpns.get(userId); 3047 if (vpn != null) { 3048 return vpn.prepare(oldPackage, newPackage); 3049 } else { 3050 return false; 3051 } 3052 } 3053 } 3054 3055 /** 3056 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3057 * This method is used by system-privileged apps. 3058 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3059 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3060 * 3061 * @param packageName The package for which authorization state should change. 3062 * @param userId User for whom {@code packageName} is installed. 3063 * @param authorized {@code true} if this app should be able to start a VPN connection without 3064 * explicit user approval, {@code false} if not. 3065 * 3066 * @hide 3067 */ 3068 @Override 3069 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3070 enforceCrossUserPermission(userId); 3071 3072 synchronized(mVpns) { 3073 Vpn vpn = mVpns.get(userId); 3074 if (vpn != null) { 3075 vpn.setPackageAuthorization(packageName, authorized); 3076 } 3077 } 3078 } 3079 3080 /** 3081 * Configure a TUN interface and return its file descriptor. Parameters 3082 * are encoded and opaque to this class. This method is used by VpnBuilder 3083 * and not available in ConnectivityManager. Permissions are checked in 3084 * Vpn class. 3085 * @hide 3086 */ 3087 @Override 3088 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3089 throwIfLockdownEnabled(); 3090 int user = UserHandle.getUserId(Binder.getCallingUid()); 3091 synchronized(mVpns) { 3092 return mVpns.get(user).establish(config); 3093 } 3094 } 3095 3096 /** 3097 * Start legacy VPN, controlling native daemons as needed. Creates a 3098 * secondary thread to perform connection work, returning quickly. 3099 */ 3100 @Override 3101 public void startLegacyVpn(VpnProfile profile) { 3102 throwIfLockdownEnabled(); 3103 final LinkProperties egress = getActiveLinkProperties(); 3104 if (egress == null) { 3105 throw new IllegalStateException("Missing active network connection"); 3106 } 3107 int user = UserHandle.getUserId(Binder.getCallingUid()); 3108 synchronized(mVpns) { 3109 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3110 } 3111 } 3112 3113 /** 3114 * Return the information of the ongoing legacy VPN. This method is used 3115 * by VpnSettings and not available in ConnectivityManager. Permissions 3116 * are checked in Vpn class. 3117 */ 3118 @Override 3119 public LegacyVpnInfo getLegacyVpnInfo(int userId) { 3120 enforceCrossUserPermission(userId); 3121 if (mLockdownEnabled) { 3122 return null; 3123 } 3124 3125 synchronized(mVpns) { 3126 return mVpns.get(userId).getLegacyVpnInfo(); 3127 } 3128 } 3129 3130 /** 3131 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3132 * and not available in ConnectivityManager. 3133 */ 3134 @Override 3135 public VpnInfo[] getAllVpnInfo() { 3136 enforceConnectivityInternalPermission(); 3137 if (mLockdownEnabled) { 3138 return new VpnInfo[0]; 3139 } 3140 3141 synchronized(mVpns) { 3142 List<VpnInfo> infoList = new ArrayList<>(); 3143 for (int i = 0; i < mVpns.size(); i++) { 3144 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3145 if (info != null) { 3146 infoList.add(info); 3147 } 3148 } 3149 return infoList.toArray(new VpnInfo[infoList.size()]); 3150 } 3151 } 3152 3153 /** 3154 * @return VPN information for accounting, or null if we can't retrieve all required 3155 * information, e.g primary underlying iface. 3156 */ 3157 @Nullable 3158 private VpnInfo createVpnInfo(Vpn vpn) { 3159 VpnInfo info = vpn.getVpnInfo(); 3160 if (info == null) { 3161 return null; 3162 } 3163 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3164 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3165 // the underlyingNetworks list. 3166 if (underlyingNetworks == null) { 3167 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3168 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3169 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3170 } 3171 } else if (underlyingNetworks.length > 0) { 3172 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3173 if (linkProperties != null) { 3174 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3175 } 3176 } 3177 return info.primaryUnderlyingIface == null ? null : info; 3178 } 3179 3180 /** 3181 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3182 * VpnDialogs and not available in ConnectivityManager. 3183 * Permissions are checked in Vpn class. 3184 * @hide 3185 */ 3186 @Override 3187 public VpnConfig getVpnConfig(int userId) { 3188 enforceCrossUserPermission(userId); 3189 synchronized(mVpns) { 3190 Vpn vpn = mVpns.get(userId); 3191 if (vpn != null) { 3192 return vpn.getVpnConfig(); 3193 } else { 3194 return null; 3195 } 3196 } 3197 } 3198 3199 @Override 3200 public boolean updateLockdownVpn() { 3201 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3202 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3203 return false; 3204 } 3205 3206 // Tear down existing lockdown if profile was removed 3207 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3208 if (mLockdownEnabled) { 3209 if (!mKeyStore.isUnlocked()) { 3210 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3211 return false; 3212 } 3213 3214 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3215 final VpnProfile profile = VpnProfile.decode( 3216 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3217 if (profile == null) { 3218 Slog.e(TAG, "Lockdown VPN configured invalid profile " + profileName); 3219 setLockdownTracker(null); 3220 return true; 3221 } 3222 int user = UserHandle.getUserId(Binder.getCallingUid()); 3223 synchronized(mVpns) { 3224 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3225 profile)); 3226 } 3227 } else { 3228 setLockdownTracker(null); 3229 } 3230 3231 return true; 3232 } 3233 3234 /** 3235 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3236 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3237 */ 3238 private void setLockdownTracker(LockdownVpnTracker tracker) { 3239 // Shutdown any existing tracker 3240 final LockdownVpnTracker existing = mLockdownTracker; 3241 mLockdownTracker = null; 3242 if (existing != null) { 3243 existing.shutdown(); 3244 } 3245 3246 try { 3247 if (tracker != null) { 3248 mNetd.setFirewallEnabled(true); 3249 mNetd.setFirewallInterfaceRule("lo", true); 3250 mLockdownTracker = tracker; 3251 mLockdownTracker.init(); 3252 } else { 3253 mNetd.setFirewallEnabled(false); 3254 } 3255 } catch (RemoteException e) { 3256 // ignored; NMS lives inside system_server 3257 } 3258 } 3259 3260 private void throwIfLockdownEnabled() { 3261 if (mLockdownEnabled) { 3262 throw new IllegalStateException("Unavailable in lockdown mode"); 3263 } 3264 } 3265 3266 /** 3267 * Sets up or tears down the always-on VPN for user {@param user} as appropriate. 3268 * 3269 * @return {@code false} in case of errors; {@code true} otherwise. 3270 */ 3271 private boolean updateAlwaysOnVpn(int user) { 3272 final String lockdownPackage = getAlwaysOnVpnPackage(user); 3273 if (lockdownPackage == null) { 3274 return true; 3275 } 3276 3277 // Create an intent to start the VPN service declared in the app's manifest. 3278 Intent serviceIntent = new Intent(VpnConfig.SERVICE_INTERFACE); 3279 serviceIntent.setPackage(lockdownPackage); 3280 3281 try { 3282 return mContext.startServiceAsUser(serviceIntent, UserHandle.of(user)) != null; 3283 } catch (RuntimeException e) { 3284 return false; 3285 } 3286 } 3287 3288 @Override 3289 public boolean setAlwaysOnVpnPackage(int userId, String packageName) { 3290 enforceConnectivityInternalPermission(); 3291 enforceCrossUserPermission(userId); 3292 3293 // Can't set always-on VPN if legacy VPN is already in lockdown mode. 3294 if (LockdownVpnTracker.isEnabled()) { 3295 return false; 3296 } 3297 3298 // If the current VPN package is the same as the new one, this is a no-op 3299 final String oldPackage = getAlwaysOnVpnPackage(userId); 3300 if (TextUtils.equals(oldPackage, packageName)) { 3301 return true; 3302 } 3303 3304 synchronized (mVpns) { 3305 Vpn vpn = mVpns.get(userId); 3306 if (vpn == null) { 3307 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3308 return false; 3309 } 3310 if (!vpn.setAlwaysOnPackage(packageName)) { 3311 return false; 3312 } 3313 if (!updateAlwaysOnVpn(userId)) { 3314 vpn.setAlwaysOnPackage(null); 3315 return false; 3316 } 3317 } 3318 return true; 3319 } 3320 3321 @Override 3322 public String getAlwaysOnVpnPackage(int userId) { 3323 enforceConnectivityInternalPermission(); 3324 enforceCrossUserPermission(userId); 3325 3326 synchronized (mVpns) { 3327 Vpn vpn = mVpns.get(userId); 3328 if (vpn == null) { 3329 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3330 return null; 3331 } 3332 return vpn.getAlwaysOnPackage(); 3333 } 3334 } 3335 3336 @Override 3337 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3338 // TODO: Remove? Any reason to trigger a provisioning check? 3339 return -1; 3340 } 3341 3342 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3343 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3344 3345 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3346 if (DBG) { 3347 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3348 + " action=" + action); 3349 } 3350 Intent intent = new Intent(action); 3351 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3352 // Concatenate the range of types onto the range of NetIDs. 3353 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3354 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3355 networkType, null, pendingIntent, false); 3356 } 3357 3358 /** 3359 * Show or hide network provisioning notifications. 3360 * 3361 * We use notifications for two purposes: to notify that a network requires sign in 3362 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3363 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3364 * particular network we can display the notification type that was most recently requested. 3365 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3366 * might first display NO_INTERNET, and then when the captive portal check completes, display 3367 * SIGN_IN. 3368 * 3369 * @param id an identifier that uniquely identifies this notification. This must match 3370 * between show and hide calls. We use the NetID value but for legacy callers 3371 * we concatenate the range of types with the range of NetIDs. 3372 */ 3373 private void setProvNotificationVisibleIntent(boolean visible, int id, 3374 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent, 3375 boolean highPriority) { 3376 if (DBG) { 3377 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3378 + " networkType=" + getNetworkTypeName(networkType) 3379 + " extraInfo=" + extraInfo + " highPriority=" + highPriority); 3380 } 3381 3382 Resources r = Resources.getSystem(); 3383 NotificationManager notificationManager = (NotificationManager) mContext 3384 .getSystemService(Context.NOTIFICATION_SERVICE); 3385 3386 if (visible) { 3387 CharSequence title; 3388 CharSequence details; 3389 int icon; 3390 if (notifyType == NotificationType.NO_INTERNET && 3391 networkType == ConnectivityManager.TYPE_WIFI) { 3392 title = r.getString(R.string.wifi_no_internet, 0); 3393 details = r.getString(R.string.wifi_no_internet_detailed); 3394 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3395 } else if (notifyType == NotificationType.SIGN_IN) { 3396 switch (networkType) { 3397 case ConnectivityManager.TYPE_WIFI: 3398 title = r.getString(R.string.wifi_available_sign_in, 0); 3399 details = r.getString(R.string.network_available_sign_in_detailed, 3400 extraInfo); 3401 icon = R.drawable.stat_notify_wifi_in_range; 3402 break; 3403 case ConnectivityManager.TYPE_MOBILE: 3404 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3405 title = r.getString(R.string.network_available_sign_in, 0); 3406 // TODO: Change this to pull from NetworkInfo once a printable 3407 // name has been added to it 3408 details = mTelephonyManager.getNetworkOperatorName(); 3409 icon = R.drawable.stat_notify_rssi_in_range; 3410 break; 3411 default: 3412 title = r.getString(R.string.network_available_sign_in, 0); 3413 details = r.getString(R.string.network_available_sign_in_detailed, 3414 extraInfo); 3415 icon = R.drawable.stat_notify_rssi_in_range; 3416 break; 3417 } 3418 } else { 3419 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3420 + getNetworkTypeName(networkType)); 3421 return; 3422 } 3423 3424 Notification notification = new Notification.Builder(mContext) 3425 .setWhen(0) 3426 .setSmallIcon(icon) 3427 .setAutoCancel(true) 3428 .setTicker(title) 3429 .setColor(mContext.getColor( 3430 com.android.internal.R.color.system_notification_accent_color)) 3431 .setContentTitle(title) 3432 .setContentText(details) 3433 .setContentIntent(intent) 3434 .setLocalOnly(true) 3435 .setPriority(highPriority ? 3436 Notification.PRIORITY_HIGH : 3437 Notification.PRIORITY_DEFAULT) 3438 .setDefaults(highPriority ? Notification.DEFAULT_ALL : 0) 3439 .setOnlyAlertOnce(true) 3440 .build(); 3441 3442 try { 3443 notificationManager.notify(NOTIFICATION_ID, id, notification); 3444 } catch (NullPointerException npe) { 3445 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3446 npe.printStackTrace(); 3447 } 3448 } else { 3449 try { 3450 notificationManager.cancel(NOTIFICATION_ID, id); 3451 } catch (NullPointerException npe) { 3452 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3453 npe.printStackTrace(); 3454 } 3455 } 3456 } 3457 3458 /** Location to an updatable file listing carrier provisioning urls. 3459 * An example: 3460 * 3461 * <?xml version="1.0" encoding="utf-8"?> 3462 * <provisioningUrls> 3463 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3464 * </provisioningUrls> 3465 */ 3466 private static final String PROVISIONING_URL_PATH = 3467 "/data/misc/radio/provisioning_urls.xml"; 3468 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3469 3470 /** XML tag for root element. */ 3471 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3472 /** XML tag for individual url */ 3473 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3474 /** XML attribute for mcc */ 3475 private static final String ATTR_MCC = "mcc"; 3476 /** XML attribute for mnc */ 3477 private static final String ATTR_MNC = "mnc"; 3478 3479 private String getProvisioningUrlBaseFromFile() { 3480 FileReader fileReader = null; 3481 XmlPullParser parser = null; 3482 Configuration config = mContext.getResources().getConfiguration(); 3483 3484 try { 3485 fileReader = new FileReader(mProvisioningUrlFile); 3486 parser = Xml.newPullParser(); 3487 parser.setInput(fileReader); 3488 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3489 3490 while (true) { 3491 XmlUtils.nextElement(parser); 3492 3493 String element = parser.getName(); 3494 if (element == null) break; 3495 3496 if (element.equals(TAG_PROVISIONING_URL)) { 3497 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3498 try { 3499 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3500 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3501 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3502 parser.next(); 3503 if (parser.getEventType() == XmlPullParser.TEXT) { 3504 return parser.getText(); 3505 } 3506 } 3507 } 3508 } catch (NumberFormatException e) { 3509 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3510 } 3511 } 3512 } 3513 return null; 3514 } catch (FileNotFoundException e) { 3515 loge("Carrier Provisioning Urls file not found"); 3516 } catch (XmlPullParserException e) { 3517 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3518 } catch (IOException e) { 3519 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3520 } finally { 3521 if (fileReader != null) { 3522 try { 3523 fileReader.close(); 3524 } catch (IOException e) {} 3525 } 3526 } 3527 return null; 3528 } 3529 3530 @Override 3531 public String getMobileProvisioningUrl() { 3532 enforceConnectivityInternalPermission(); 3533 String url = getProvisioningUrlBaseFromFile(); 3534 if (TextUtils.isEmpty(url)) { 3535 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3536 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3537 } else { 3538 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3539 } 3540 // populate the iccid, imei and phone number in the provisioning url. 3541 if (!TextUtils.isEmpty(url)) { 3542 String phoneNumber = mTelephonyManager.getLine1Number(); 3543 if (TextUtils.isEmpty(phoneNumber)) { 3544 phoneNumber = "0000000000"; 3545 } 3546 url = String.format(url, 3547 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3548 mTelephonyManager.getDeviceId() /* IMEI */, 3549 phoneNumber /* Phone numer */); 3550 } 3551 3552 return url; 3553 } 3554 3555 @Override 3556 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3557 String action) { 3558 enforceConnectivityInternalPermission(); 3559 final long ident = Binder.clearCallingIdentity(); 3560 try { 3561 setProvNotificationVisible(visible, networkType, action); 3562 } finally { 3563 Binder.restoreCallingIdentity(ident); 3564 } 3565 } 3566 3567 @Override 3568 public void setAirplaneMode(boolean enable) { 3569 enforceConnectivityInternalPermission(); 3570 final long ident = Binder.clearCallingIdentity(); 3571 try { 3572 final ContentResolver cr = mContext.getContentResolver(); 3573 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3574 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3575 intent.putExtra("state", enable); 3576 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3577 } finally { 3578 Binder.restoreCallingIdentity(ident); 3579 } 3580 } 3581 3582 private void onUserStart(int userId) { 3583 synchronized(mVpns) { 3584 Vpn userVpn = mVpns.get(userId); 3585 if (userVpn != null) { 3586 loge("Starting user already has a VPN"); 3587 return; 3588 } 3589 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3590 mVpns.put(userId, userVpn); 3591 } 3592 } 3593 3594 private void onUserStop(int userId) { 3595 synchronized(mVpns) { 3596 Vpn userVpn = mVpns.get(userId); 3597 if (userVpn == null) { 3598 loge("Stopping user has no VPN"); 3599 return; 3600 } 3601 mVpns.delete(userId); 3602 } 3603 } 3604 3605 private void onUserAdded(int userId) { 3606 synchronized(mVpns) { 3607 final int vpnsSize = mVpns.size(); 3608 for (int i = 0; i < vpnsSize; i++) { 3609 Vpn vpn = mVpns.valueAt(i); 3610 vpn.onUserAdded(userId); 3611 } 3612 } 3613 } 3614 3615 private void onUserRemoved(int userId) { 3616 synchronized(mVpns) { 3617 final int vpnsSize = mVpns.size(); 3618 for (int i = 0; i < vpnsSize; i++) { 3619 Vpn vpn = mVpns.valueAt(i); 3620 vpn.onUserRemoved(userId); 3621 } 3622 } 3623 } 3624 3625 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3626 @Override 3627 public void onReceive(Context context, Intent intent) { 3628 final String action = intent.getAction(); 3629 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3630 if (userId == UserHandle.USER_NULL) return; 3631 3632 if (Intent.ACTION_USER_STARTING.equals(action)) { 3633 onUserStart(userId); 3634 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3635 onUserStop(userId); 3636 } else if (Intent.ACTION_USER_ADDED.equals(action)) { 3637 onUserAdded(userId); 3638 } else if (Intent.ACTION_USER_REMOVED.equals(action)) { 3639 onUserRemoved(userId); 3640 } 3641 } 3642 }; 3643 3644 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3645 new HashMap<Messenger, NetworkFactoryInfo>(); 3646 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3647 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3648 3649 private static class NetworkFactoryInfo { 3650 public final String name; 3651 public final Messenger messenger; 3652 public final AsyncChannel asyncChannel; 3653 3654 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3655 this.name = name; 3656 this.messenger = messenger; 3657 this.asyncChannel = asyncChannel; 3658 } 3659 } 3660 3661 /** 3662 * Tracks info about the requester. 3663 * Also used to notice when the calling process dies so we can self-expire 3664 */ 3665 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3666 static final boolean REQUEST = true; 3667 static final boolean LISTEN = false; 3668 3669 final NetworkRequest request; 3670 final PendingIntent mPendingIntent; 3671 boolean mPendingIntentSent; 3672 private final IBinder mBinder; 3673 final int mPid; 3674 final int mUid; 3675 final Messenger messenger; 3676 final boolean isRequest; 3677 3678 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3679 request = r; 3680 mPendingIntent = pi; 3681 messenger = null; 3682 mBinder = null; 3683 mPid = getCallingPid(); 3684 mUid = getCallingUid(); 3685 this.isRequest = isRequest; 3686 } 3687 3688 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3689 super(); 3690 messenger = m; 3691 request = r; 3692 mBinder = binder; 3693 mPid = getCallingPid(); 3694 mUid = getCallingUid(); 3695 this.isRequest = isRequest; 3696 mPendingIntent = null; 3697 3698 try { 3699 mBinder.linkToDeath(this, 0); 3700 } catch (RemoteException e) { 3701 binderDied(); 3702 } 3703 } 3704 3705 void unlinkDeathRecipient() { 3706 if (mBinder != null) { 3707 mBinder.unlinkToDeath(this, 0); 3708 } 3709 } 3710 3711 public void binderDied() { 3712 log("ConnectivityService NetworkRequestInfo binderDied(" + 3713 request + ", " + mBinder + ")"); 3714 releaseNetworkRequest(request); 3715 } 3716 3717 public String toString() { 3718 return (isRequest ? "Request" : "Listen") + 3719 " from uid/pid:" + mUid + "/" + mPid + 3720 " for " + request + 3721 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3722 } 3723 } 3724 3725 private void ensureRequestableCapabilities(NetworkCapabilities networkCapabilities) { 3726 final String badCapability = networkCapabilities.describeFirstNonRequestableCapability(); 3727 if (badCapability != null) { 3728 throw new IllegalArgumentException("Cannot request network with " + badCapability); 3729 } 3730 } 3731 3732 private ArrayList<Integer> getSignalStrengthThresholds(NetworkAgentInfo nai) { 3733 final SortedSet<Integer> thresholds = new TreeSet(); 3734 synchronized (nai) { 3735 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3736 if (nri.request.networkCapabilities.hasSignalStrength() && 3737 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 3738 thresholds.add(nri.request.networkCapabilities.getSignalStrength()); 3739 } 3740 } 3741 } 3742 return new ArrayList<Integer>(thresholds); 3743 } 3744 3745 private void updateSignalStrengthThresholds( 3746 NetworkAgentInfo nai, String reason, NetworkRequest request) { 3747 ArrayList<Integer> thresholdsArray = getSignalStrengthThresholds(nai); 3748 Bundle thresholds = new Bundle(); 3749 thresholds.putIntegerArrayList("thresholds", thresholdsArray); 3750 3751 // TODO: Switch to VDBG. 3752 if (DBG) { 3753 String detail; 3754 if (request != null && request.networkCapabilities.hasSignalStrength()) { 3755 detail = reason + " " + request.networkCapabilities.getSignalStrength(); 3756 } else { 3757 detail = reason; 3758 } 3759 log(String.format("updateSignalStrengthThresholds: %s, sending %s to %s", 3760 detail, Arrays.toString(thresholdsArray.toArray()), nai.name())); 3761 } 3762 3763 nai.asyncChannel.sendMessage( 3764 android.net.NetworkAgent.CMD_SET_SIGNAL_STRENGTH_THRESHOLDS, 3765 0, 0, thresholds); 3766 } 3767 3768 @Override 3769 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3770 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3771 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3772 enforceNetworkRequestPermissions(networkCapabilities); 3773 enforceMeteredApnPolicy(networkCapabilities); 3774 ensureRequestableCapabilities(networkCapabilities); 3775 3776 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3777 throw new IllegalArgumentException("Bad timeout specified"); 3778 } 3779 3780 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3781 nextNetworkRequestId()); 3782 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3783 NetworkRequestInfo.REQUEST); 3784 if (DBG) log("requestNetwork for " + nri); 3785 3786 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3787 if (timeoutMs > 0) { 3788 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3789 nri), timeoutMs); 3790 } 3791 return networkRequest; 3792 } 3793 3794 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3795 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3796 enforceConnectivityInternalPermission(); 3797 } else { 3798 enforceChangePermission(); 3799 } 3800 } 3801 3802 @Override 3803 public boolean requestBandwidthUpdate(Network network) { 3804 enforceAccessPermission(); 3805 NetworkAgentInfo nai = null; 3806 if (network == null) { 3807 return false; 3808 } 3809 synchronized (mNetworkForNetId) { 3810 nai = mNetworkForNetId.get(network.netId); 3811 } 3812 if (nai != null) { 3813 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3814 return true; 3815 } 3816 return false; 3817 } 3818 3819 3820 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3821 // if UID is restricted, don't allow them to bring up metered APNs 3822 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3823 final int uidRules; 3824 final int uid = Binder.getCallingUid(); 3825 synchronized(mRulesLock) { 3826 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3827 } 3828 if (uidRules != RULE_ALLOW_ALL) { 3829 // we could silently fail or we can filter the available nets to only give 3830 // them those they have access to. Chose the more useful 3831 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3832 } 3833 } 3834 } 3835 3836 @Override 3837 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3838 PendingIntent operation) { 3839 checkNotNull(operation, "PendingIntent cannot be null."); 3840 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3841 enforceNetworkRequestPermissions(networkCapabilities); 3842 enforceMeteredApnPolicy(networkCapabilities); 3843 ensureRequestableCapabilities(networkCapabilities); 3844 3845 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3846 nextNetworkRequestId()); 3847 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3848 NetworkRequestInfo.REQUEST); 3849 if (DBG) log("pendingRequest for " + nri); 3850 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3851 nri)); 3852 return networkRequest; 3853 } 3854 3855 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3856 mHandler.sendMessageDelayed( 3857 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3858 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3859 } 3860 3861 @Override 3862 public void releasePendingNetworkRequest(PendingIntent operation) { 3863 checkNotNull(operation, "PendingIntent cannot be null."); 3864 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3865 getCallingUid(), 0, operation)); 3866 } 3867 3868 // In order to implement the compatibility measure for pre-M apps that call 3869 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3870 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3871 // This ensures it has permission to do so. 3872 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3873 if (nc == null) { 3874 return false; 3875 } 3876 int[] transportTypes = nc.getTransportTypes(); 3877 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3878 return false; 3879 } 3880 try { 3881 mContext.enforceCallingOrSelfPermission( 3882 android.Manifest.permission.ACCESS_WIFI_STATE, 3883 "ConnectivityService"); 3884 } catch (SecurityException e) { 3885 return false; 3886 } 3887 return true; 3888 } 3889 3890 @Override 3891 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3892 Messenger messenger, IBinder binder) { 3893 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3894 enforceAccessPermission(); 3895 } 3896 3897 NetworkRequest networkRequest = new NetworkRequest( 3898 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3899 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3900 NetworkRequestInfo.LISTEN); 3901 if (DBG) log("listenForNetwork for " + nri); 3902 3903 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3904 return networkRequest; 3905 } 3906 3907 @Override 3908 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3909 PendingIntent operation) { 3910 checkNotNull(operation, "PendingIntent cannot be null."); 3911 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3912 enforceAccessPermission(); 3913 } 3914 3915 NetworkRequest networkRequest = new NetworkRequest( 3916 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3917 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3918 NetworkRequestInfo.LISTEN); 3919 if (DBG) log("pendingListenForNetwork for " + nri); 3920 3921 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3922 } 3923 3924 @Override 3925 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3926 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3927 0, networkRequest)); 3928 } 3929 3930 @Override 3931 public void registerNetworkFactory(Messenger messenger, String name) { 3932 enforceConnectivityInternalPermission(); 3933 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3934 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3935 } 3936 3937 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3938 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3939 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3940 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3941 } 3942 3943 @Override 3944 public void unregisterNetworkFactory(Messenger messenger) { 3945 enforceConnectivityInternalPermission(); 3946 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3947 } 3948 3949 private void handleUnregisterNetworkFactory(Messenger messenger) { 3950 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3951 if (nfi == null) { 3952 loge("Failed to find Messenger in unregisterNetworkFactory"); 3953 return; 3954 } 3955 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3956 } 3957 3958 /** 3959 * NetworkAgentInfo supporting a request by requestId. 3960 * These have already been vetted (their Capabilities satisfy the request) 3961 * and the are the highest scored network available. 3962 * the are keyed off the Requests requestId. 3963 */ 3964 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 3965 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3966 new SparseArray<NetworkAgentInfo>(); 3967 3968 // NOTE: Accessed on multiple threads, must be synchronized on itself. 3969 @GuardedBy("mNetworkForNetId") 3970 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3971 new SparseArray<NetworkAgentInfo>(); 3972 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 3973 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 3974 // there may not be a strict 1:1 correlation between the two. 3975 @GuardedBy("mNetworkForNetId") 3976 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 3977 3978 // NetworkAgentInfo keyed off its connecting messenger 3979 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3980 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 3981 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3982 new HashMap<Messenger, NetworkAgentInfo>(); 3983 3984 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3985 private final NetworkRequest mDefaultRequest; 3986 3987 // Request used to optionally keep mobile data active even when higher 3988 // priority networks like Wi-Fi are active. 3989 private final NetworkRequest mDefaultMobileDataRequest; 3990 3991 private NetworkAgentInfo getDefaultNetwork() { 3992 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3993 } 3994 3995 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3996 return nai == getDefaultNetwork(); 3997 } 3998 3999 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 4000 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 4001 int currentScore, NetworkMisc networkMisc) { 4002 enforceConnectivityInternalPermission(); 4003 4004 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 4005 // satisfies mDefaultRequest. 4006 final NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 4007 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 4008 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 4009 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest, this); 4010 synchronized (this) { 4011 nai.networkMonitor.systemReady = mSystemReady; 4012 } 4013 addValidationLogs(nai.networkMonitor.getValidationLogs(), nai.network); 4014 if (DBG) log("registerNetworkAgent " + nai); 4015 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 4016 return nai.network.netId; 4017 } 4018 4019 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 4020 if (VDBG) log("Got NetworkAgent Messenger"); 4021 mNetworkAgentInfos.put(na.messenger, na); 4022 synchronized (mNetworkForNetId) { 4023 mNetworkForNetId.put(na.network.netId, na); 4024 } 4025 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 4026 NetworkInfo networkInfo = na.networkInfo; 4027 na.networkInfo = null; 4028 updateNetworkInfo(na, networkInfo); 4029 } 4030 4031 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 4032 LinkProperties newLp = networkAgent.linkProperties; 4033 int netId = networkAgent.network.netId; 4034 4035 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 4036 // we do anything else, make sure its LinkProperties are accurate. 4037 if (networkAgent.clatd != null) { 4038 networkAgent.clatd.fixupLinkProperties(oldLp); 4039 } 4040 4041 updateInterfaces(newLp, oldLp, netId); 4042 updateMtu(newLp, oldLp); 4043 // TODO - figure out what to do for clat 4044// for (LinkProperties lp : newLp.getStackedLinks()) { 4045// updateMtu(lp, null); 4046// } 4047 updateTcpBufferSizes(networkAgent); 4048 4049 // TODO: deprecate and remove mDefaultDns when we can do so safely. See http://b/18327075 4050 // In L, we used it only when the network had Internet access but provided no DNS servers. 4051 // For now, just disable it, and if disabling it doesn't break things, remove it. 4052 // final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 4053 // NET_CAPABILITY_INTERNET); 4054 final boolean useDefaultDns = false; 4055 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 4056 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 4057 4058 updateClat(newLp, oldLp, networkAgent); 4059 if (isDefaultNetwork(networkAgent)) { 4060 handleApplyDefaultProxy(newLp.getHttpProxy()); 4061 } else { 4062 updateProxy(newLp, oldLp, networkAgent); 4063 } 4064 // TODO - move this check to cover the whole function 4065 if (!Objects.equals(newLp, oldLp)) { 4066 notifyIfacesChanged(); 4067 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 4068 } 4069 4070 mKeepaliveTracker.handleCheckKeepalivesStillValid(networkAgent); 4071 } 4072 4073 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 4074 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 4075 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 4076 4077 if (!wasRunningClat && shouldRunClat) { 4078 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 4079 nai.clatd.start(); 4080 } else if (wasRunningClat && !shouldRunClat) { 4081 nai.clatd.stop(); 4082 } 4083 } 4084 4085 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 4086 CompareResult<String> interfaceDiff = new CompareResult<String>(); 4087 if (oldLp != null) { 4088 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 4089 } else if (newLp != null) { 4090 interfaceDiff.added = newLp.getAllInterfaceNames(); 4091 } 4092 for (String iface : interfaceDiff.added) { 4093 try { 4094 if (DBG) log("Adding iface " + iface + " to network " + netId); 4095 mNetd.addInterfaceToNetwork(iface, netId); 4096 } catch (Exception e) { 4097 loge("Exception adding interface: " + e); 4098 } 4099 } 4100 for (String iface : interfaceDiff.removed) { 4101 try { 4102 if (DBG) log("Removing iface " + iface + " from network " + netId); 4103 mNetd.removeInterfaceFromNetwork(iface, netId); 4104 } catch (Exception e) { 4105 loge("Exception removing interface: " + e); 4106 } 4107 } 4108 } 4109 4110 /** 4111 * Have netd update routes from oldLp to newLp. 4112 * @return true if routes changed between oldLp and newLp 4113 */ 4114 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 4115 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 4116 if (oldLp != null) { 4117 routeDiff = oldLp.compareAllRoutes(newLp); 4118 } else if (newLp != null) { 4119 routeDiff.added = newLp.getAllRoutes(); 4120 } 4121 4122 // add routes before removing old in case it helps with continuous connectivity 4123 4124 // do this twice, adding non-nexthop routes first, then routes they are dependent on 4125 for (RouteInfo route : routeDiff.added) { 4126 if (route.hasGateway()) continue; 4127 if (DBG) log("Adding Route [" + route + "] to network " + netId); 4128 try { 4129 mNetd.addRoute(netId, route); 4130 } catch (Exception e) { 4131 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 4132 loge("Exception in addRoute for non-gateway: " + e); 4133 } 4134 } 4135 } 4136 for (RouteInfo route : routeDiff.added) { 4137 if (route.hasGateway() == false) continue; 4138 if (DBG) log("Adding Route [" + route + "] to network " + netId); 4139 try { 4140 mNetd.addRoute(netId, route); 4141 } catch (Exception e) { 4142 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4143 loge("Exception in addRoute for gateway: " + e); 4144 } 4145 } 4146 } 4147 4148 for (RouteInfo route : routeDiff.removed) { 4149 if (DBG) log("Removing Route [" + route + "] from network " + netId); 4150 try { 4151 mNetd.removeRoute(netId, route); 4152 } catch (Exception e) { 4153 loge("Exception in removeRoute: " + e); 4154 } 4155 } 4156 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4157 } 4158 4159 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 4160 boolean flush, boolean useDefaultDns) { 4161 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 4162 Collection<InetAddress> dnses = newLp.getDnsServers(); 4163 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 4164 dnses = new ArrayList(); 4165 dnses.add(mDefaultDns); 4166 if (DBG) { 4167 loge("no dns provided for netId " + netId + ", so using defaults"); 4168 } 4169 } 4170 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 4171 try { 4172 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 4173 newLp.getDomains()); 4174 } catch (Exception e) { 4175 loge("Exception in setDnsServersForNetwork: " + e); 4176 } 4177 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 4178 if (defaultNai != null && defaultNai.network.netId == netId) { 4179 setDefaultDnsSystemProperties(dnses); 4180 } 4181 flushVmDnsCache(); 4182 } else if (flush) { 4183 try { 4184 mNetd.flushNetworkDnsCache(netId); 4185 } catch (Exception e) { 4186 loge("Exception in flushNetworkDnsCache: " + e); 4187 } 4188 flushVmDnsCache(); 4189 } 4190 } 4191 4192 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4193 int last = 0; 4194 for (InetAddress dns : dnses) { 4195 ++last; 4196 String key = "net.dns" + last; 4197 String value = dns.getHostAddress(); 4198 SystemProperties.set(key, value); 4199 } 4200 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4201 String key = "net.dns" + i; 4202 SystemProperties.set(key, ""); 4203 } 4204 mNumDnsEntries = last; 4205 } 4206 4207 /** 4208 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 4209 * augmented with any stateful capabilities implied from {@code networkAgent} 4210 * (e.g., validated status and captive portal status). 4211 * 4212 * @param nai the network having its capabilities updated. 4213 * @param networkCapabilities the new network capabilities. 4214 */ 4215 private void updateCapabilities(NetworkAgentInfo nai, NetworkCapabilities networkCapabilities) { 4216 // Don't modify caller's NetworkCapabilities. 4217 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4218 if (nai.lastValidated) { 4219 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4220 } else { 4221 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4222 } 4223 if (nai.lastCaptivePortalDetected) { 4224 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4225 } else { 4226 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4227 } 4228 if (!Objects.equals(nai.networkCapabilities, networkCapabilities)) { 4229 final int oldScore = nai.getCurrentScore(); 4230 if (nai.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) != 4231 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED)) { 4232 try { 4233 mNetd.setNetworkPermission(nai.network.netId, 4234 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) ? 4235 null : NetworkManagementService.PERMISSION_SYSTEM); 4236 } catch (RemoteException e) { 4237 loge("Exception in setNetworkPermission: " + e); 4238 } 4239 } 4240 synchronized (nai) { 4241 nai.networkCapabilities = networkCapabilities; 4242 } 4243 rematchAllNetworksAndRequests(nai, oldScore); 4244 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 4245 } 4246 } 4247 4248 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4249 for (int i = 0; i < nai.networkRequests.size(); i++) { 4250 NetworkRequest nr = nai.networkRequests.valueAt(i); 4251 // Don't send listening requests to factories. b/17393458 4252 if (!isRequest(nr)) continue; 4253 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4254 } 4255 } 4256 4257 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4258 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4259 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4260 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4261 networkRequest); 4262 } 4263 } 4264 4265 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4266 int notificationType) { 4267 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4268 Intent intent = new Intent(); 4269 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4270 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4271 nri.mPendingIntentSent = true; 4272 sendIntent(nri.mPendingIntent, intent); 4273 } 4274 // else not handled 4275 } 4276 4277 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4278 mPendingIntentWakeLock.acquire(); 4279 try { 4280 if (DBG) log("Sending " + pendingIntent); 4281 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4282 } catch (PendingIntent.CanceledException e) { 4283 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4284 mPendingIntentWakeLock.release(); 4285 releasePendingNetworkRequest(pendingIntent); 4286 } 4287 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4288 } 4289 4290 @Override 4291 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4292 String resultData, Bundle resultExtras) { 4293 if (DBG) log("Finished sending " + pendingIntent); 4294 mPendingIntentWakeLock.release(); 4295 // Release with a delay so the receiving client has an opportunity to put in its 4296 // own request. 4297 releasePendingNetworkRequestWithDelay(pendingIntent); 4298 } 4299 4300 private void callCallbackForRequest(NetworkRequestInfo nri, 4301 NetworkAgentInfo networkAgent, int notificationType) { 4302 if (nri.messenger == null) return; // Default request has no msgr 4303 Bundle bundle = new Bundle(); 4304 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4305 new NetworkRequest(nri.request)); 4306 Message msg = Message.obtain(); 4307 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4308 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4309 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4310 } 4311 switch (notificationType) { 4312 case ConnectivityManager.CALLBACK_LOSING: { 4313 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4314 break; 4315 } 4316 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4317 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4318 new NetworkCapabilities(networkAgent.networkCapabilities)); 4319 break; 4320 } 4321 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4322 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4323 new LinkProperties(networkAgent.linkProperties)); 4324 break; 4325 } 4326 } 4327 msg.what = notificationType; 4328 msg.setData(bundle); 4329 try { 4330 if (VDBG) { 4331 log("sending notification " + notifyTypeToName(notificationType) + 4332 " for " + nri.request); 4333 } 4334 nri.messenger.send(msg); 4335 } catch (RemoteException e) { 4336 // may occur naturally in the race of binder death. 4337 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4338 } 4339 } 4340 4341 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4342 for (int i = 0; i < nai.networkRequests.size(); i++) { 4343 NetworkRequest nr = nai.networkRequests.valueAt(i); 4344 // Ignore listening requests. 4345 if (!isRequest(nr)) continue; 4346 loge("Dead network still had at least " + nr); 4347 break; 4348 } 4349 nai.asyncChannel.disconnect(); 4350 } 4351 4352 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4353 if (oldNetwork == null) { 4354 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4355 return; 4356 } 4357 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4358 teardownUnneededNetwork(oldNetwork); 4359 } 4360 4361 private void makeDefault(NetworkAgentInfo newNetwork) { 4362 if (DBG) log("Switching to new default network: " + newNetwork); 4363 setupDataActivityTracking(newNetwork); 4364 try { 4365 mNetd.setDefaultNetId(newNetwork.network.netId); 4366 } catch (Exception e) { 4367 loge("Exception setting default network :" + e); 4368 } 4369 notifyLockdownVpn(newNetwork); 4370 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4371 updateTcpBufferSizes(newNetwork); 4372 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4373 } 4374 4375 // Handles a network appearing or improving its score. 4376 // 4377 // - Evaluates all current NetworkRequests that can be 4378 // satisfied by newNetwork, and reassigns to newNetwork 4379 // any such requests for which newNetwork is the best. 4380 // 4381 // - Lingers any validated Networks that as a result are no longer 4382 // needed. A network is needed if it is the best network for 4383 // one or more NetworkRequests, or if it is a VPN. 4384 // 4385 // - Tears down newNetwork if it just became validated 4386 // but turns out to be unneeded. 4387 // 4388 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4389 // networks that have no chance (i.e. even if validated) 4390 // of becoming the highest scoring network. 4391 // 4392 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4393 // it does not remove NetworkRequests that other Networks could better satisfy. 4394 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4395 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4396 // as it performs better by a factor of the number of Networks. 4397 // 4398 // @param newNetwork is the network to be matched against NetworkRequests. 4399 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4400 // performed to tear down unvalidated networks that have no chance (i.e. even if 4401 // validated) of becoming the highest scoring network. 4402 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, 4403 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4404 if (!newNetwork.created) return; 4405 boolean keep = newNetwork.isVPN(); 4406 boolean isNewDefault = false; 4407 NetworkAgentInfo oldDefaultNetwork = null; 4408 if (VDBG) log("rematching " + newNetwork.name()); 4409 // Find and migrate to this Network any NetworkRequests for 4410 // which this network is now the best. 4411 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4412 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4413 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4414 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4415 final NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4416 final boolean satisfies = newNetwork.satisfies(nri.request); 4417 if (newNetwork == currentNetwork && satisfies) { 4418 if (VDBG) { 4419 log("Network " + newNetwork.name() + " was already satisfying" + 4420 " request " + nri.request.requestId + ". No change."); 4421 } 4422 keep = true; 4423 continue; 4424 } 4425 4426 // check if it satisfies the NetworkCapabilities 4427 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4428 if (satisfies) { 4429 if (!nri.isRequest) { 4430 // This is not a request, it's a callback listener. 4431 // Add it to newNetwork regardless of score. 4432 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4433 continue; 4434 } 4435 4436 // next check if it's better than any current network we're using for 4437 // this request 4438 if (VDBG) { 4439 log("currentScore = " + 4440 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4441 ", newScore = " + newNetwork.getCurrentScore()); 4442 } 4443 if (currentNetwork == null || 4444 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4445 if (DBG) log("rematch for " + newNetwork.name()); 4446 if (currentNetwork != null) { 4447 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4448 currentNetwork.networkRequests.remove(nri.request.requestId); 4449 currentNetwork.networkLingered.add(nri.request); 4450 affectedNetworks.add(currentNetwork); 4451 } else { 4452 if (DBG) log(" accepting network in place of null"); 4453 } 4454 unlinger(newNetwork); 4455 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4456 if (!newNetwork.addRequest(nri.request)) { 4457 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4458 } 4459 addedRequests.add(nri); 4460 keep = true; 4461 // Tell NetworkFactories about the new score, so they can stop 4462 // trying to connect if they know they cannot match it. 4463 // TODO - this could get expensive if we have alot of requests for this 4464 // network. Think about if there is a way to reduce this. Push 4465 // netid->request mapping to each factory? 4466 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4467 if (mDefaultRequest.requestId == nri.request.requestId) { 4468 isNewDefault = true; 4469 oldDefaultNetwork = currentNetwork; 4470 } 4471 } 4472 } else if (newNetwork.networkRequests.get(nri.request.requestId) != null) { 4473 // If "newNetwork" is listed as satisfying "nri" but no longer satisfies "nri", 4474 // mark it as no longer satisfying "nri". Because networks are processed by 4475 // rematchAllNetworkAndRequests() in descending score order, "currentNetwork" will 4476 // match "newNetwork" before this loop will encounter a "currentNetwork" with higher 4477 // score than "newNetwork" and where "currentNetwork" no longer satisfies "nri". 4478 // This means this code doesn't have to handle the case where "currentNetwork" no 4479 // longer satisfies "nri" when "currentNetwork" does not equal "newNetwork". 4480 if (DBG) { 4481 log("Network " + newNetwork.name() + " stopped satisfying" + 4482 " request " + nri.request.requestId); 4483 } 4484 newNetwork.networkRequests.remove(nri.request.requestId); 4485 if (currentNetwork == newNetwork) { 4486 mNetworkForRequestId.remove(nri.request.requestId); 4487 sendUpdatedScoreToFactories(nri.request, 0); 4488 } else { 4489 if (nri.isRequest == true) { 4490 Slog.wtf(TAG, "BUG: Removing request " + nri.request.requestId + " from " + 4491 newNetwork.name() + 4492 " without updating mNetworkForRequestId or factories!"); 4493 } 4494 } 4495 // TODO: technically, sending CALLBACK_LOST here is 4496 // incorrect if nri is a request (not a listen) and there 4497 // is a replacement network currently connected that can 4498 // satisfy it. However, the only capability that can both 4499 // a) be requested and b) change is NET_CAPABILITY_TRUSTED, 4500 // so this code is only incorrect for a network that loses 4501 // the TRUSTED capability, which is a rare case. 4502 callCallbackForRequest(nri, newNetwork, ConnectivityManager.CALLBACK_LOST); 4503 } 4504 } 4505 // Linger any networks that are no longer needed. 4506 for (NetworkAgentInfo nai : affectedNetworks) { 4507 if (nai.lingering) { 4508 // Already lingered. Nothing to do. This can only happen if "nai" is in 4509 // "affectedNetworks" twice. The reasoning being that to get added to 4510 // "affectedNetworks", "nai" must have been satisfying a NetworkRequest 4511 // (i.e. not lingered) so it could have only been lingered by this loop. 4512 // unneeded(nai) will be false and we'll call unlinger() below which would 4513 // be bad, so handle it here. 4514 } else if (unneeded(nai)) { 4515 linger(nai); 4516 } else { 4517 // Clear nai.networkLingered we might have added above. 4518 unlinger(nai); 4519 } 4520 } 4521 if (isNewDefault) { 4522 // Notify system services that this network is up. 4523 makeDefault(newNetwork); 4524 synchronized (ConnectivityService.this) { 4525 // have a new default network, release the transition wakelock in 4526 // a second if it's held. The second pause is to allow apps 4527 // to reconnect over the new network 4528 if (mNetTransitionWakeLock.isHeld()) { 4529 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4530 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4531 mNetTransitionWakeLockSerialNumber, 0), 4532 1000); 4533 } 4534 } 4535 } 4536 4537 // do this after the default net is switched, but 4538 // before LegacyTypeTracker sends legacy broadcasts 4539 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4540 4541 if (isNewDefault) { 4542 // Maintain the illusion: since the legacy API only 4543 // understands one network at a time, we must pretend 4544 // that the current default network disconnected before 4545 // the new one connected. 4546 if (oldDefaultNetwork != null) { 4547 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4548 oldDefaultNetwork, true); 4549 } 4550 mDefaultInetConditionPublished = newNetwork.lastValidated ? 100 : 0; 4551 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4552 notifyLockdownVpn(newNetwork); 4553 } 4554 4555 if (keep) { 4556 // Notify battery stats service about this network, both the normal 4557 // interface and any stacked links. 4558 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4559 try { 4560 final IBatteryStats bs = BatteryStatsService.getService(); 4561 final int type = newNetwork.networkInfo.getType(); 4562 4563 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4564 bs.noteNetworkInterfaceType(baseIface, type); 4565 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4566 final String stackedIface = stacked.getInterfaceName(); 4567 bs.noteNetworkInterfaceType(stackedIface, type); 4568 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4569 } 4570 } catch (RemoteException ignored) { 4571 } 4572 4573 // This has to happen after the notifyNetworkCallbacks as that tickles each 4574 // ConnectivityManager instance so that legacy requests correctly bind dns 4575 // requests to this network. The legacy users are listening for this bcast 4576 // and will generally do a dns request so they can ensureRouteToHost and if 4577 // they do that before the callbacks happen they'll use the default network. 4578 // 4579 // TODO: Is there still a race here? We send the broadcast 4580 // after sending the callback, but if the app can receive the 4581 // broadcast before the callback, it might still break. 4582 // 4583 // This *does* introduce a race where if the user uses the new api 4584 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4585 // they may get old info. Reverse this after the old startUsing api is removed. 4586 // This is on top of the multiple intent sequencing referenced in the todo above. 4587 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4588 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4589 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4590 // legacy type tracker filters out repeat adds 4591 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4592 } 4593 } 4594 4595 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4596 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4597 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4598 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4599 if (newNetwork.isVPN()) { 4600 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4601 } 4602 } 4603 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4604 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4605 if (unneeded(nai)) { 4606 if (DBG) log("Reaping " + nai.name()); 4607 teardownUnneededNetwork(nai); 4608 } 4609 } 4610 } 4611 } 4612 4613 /** 4614 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4615 * being disconnected. 4616 * @param changed If only one Network's score or capabilities have been modified since the last 4617 * time this function was called, pass this Network in this argument, otherwise pass 4618 * null. 4619 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4620 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4621 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4622 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4623 * network's score. 4624 */ 4625 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4626 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4627 // to avoid the slowness. It is not simply enough to process just "changed", for 4628 // example in the case where "changed"'s score decreases and another network should begin 4629 // satifying a NetworkRequest that "changed" currently satisfies. 4630 4631 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4632 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4633 // rematchNetworkAndRequests() handles. 4634 if (changed != null && oldScore < changed.getCurrentScore()) { 4635 rematchNetworkAndRequests(changed, ReapUnvalidatedNetworks.REAP); 4636 } else { 4637 final NetworkAgentInfo[] nais = mNetworkAgentInfos.values().toArray( 4638 new NetworkAgentInfo[mNetworkAgentInfos.size()]); 4639 // Rematch higher scoring networks first to prevent requests first matching a lower 4640 // scoring network and then a higher scoring network, which could produce multiple 4641 // callbacks and inadvertently unlinger networks. 4642 Arrays.sort(nais); 4643 for (NetworkAgentInfo nai : nais) { 4644 rematchNetworkAndRequests(nai, 4645 // Only reap the last time through the loop. Reaping before all rematching 4646 // is complete could incorrectly teardown a network that hasn't yet been 4647 // rematched. 4648 (nai != nais[nais.length-1]) ? ReapUnvalidatedNetworks.DONT_REAP 4649 : ReapUnvalidatedNetworks.REAP); 4650 } 4651 } 4652 } 4653 4654 private void updateInetCondition(NetworkAgentInfo nai) { 4655 // Don't bother updating until we've graduated to validated at least once. 4656 if (!nai.everValidated) return; 4657 // For now only update icons for default connection. 4658 // TODO: Update WiFi and cellular icons separately. b/17237507 4659 if (!isDefaultNetwork(nai)) return; 4660 4661 int newInetCondition = nai.lastValidated ? 100 : 0; 4662 // Don't repeat publish. 4663 if (newInetCondition == mDefaultInetConditionPublished) return; 4664 4665 mDefaultInetConditionPublished = newInetCondition; 4666 sendInetConditionBroadcast(nai.networkInfo); 4667 } 4668 4669 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4670 if (mLockdownTracker != null) { 4671 if (nai != null && nai.isVPN()) { 4672 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4673 } else { 4674 mLockdownTracker.onNetworkInfoChanged(); 4675 } 4676 } 4677 } 4678 4679 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4680 NetworkInfo.State state = newInfo.getState(); 4681 NetworkInfo oldInfo = null; 4682 final int oldScore = networkAgent.getCurrentScore(); 4683 synchronized (networkAgent) { 4684 oldInfo = networkAgent.networkInfo; 4685 networkAgent.networkInfo = newInfo; 4686 } 4687 notifyLockdownVpn(networkAgent); 4688 4689 if (oldInfo != null && oldInfo.getState() == state) { 4690 if (VDBG) log("ignoring duplicate network state non-change"); 4691 return; 4692 } 4693 if (DBG) { 4694 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4695 (oldInfo == null ? "null" : oldInfo.getState()) + 4696 " to " + state); 4697 } 4698 4699 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4700 try { 4701 // This should never fail. Specifying an already in use NetID will cause failure. 4702 if (networkAgent.isVPN()) { 4703 mNetd.createVirtualNetwork(networkAgent.network.netId, 4704 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4705 (networkAgent.networkMisc == null || 4706 !networkAgent.networkMisc.allowBypass)); 4707 } else { 4708 mNetd.createPhysicalNetwork(networkAgent.network.netId, 4709 networkAgent.networkCapabilities.hasCapability( 4710 NET_CAPABILITY_NOT_RESTRICTED) ? 4711 null : NetworkManagementService.PERMISSION_SYSTEM); 4712 } 4713 } catch (Exception e) { 4714 loge("Error creating network " + networkAgent.network.netId + ": " 4715 + e.getMessage()); 4716 return; 4717 } 4718 networkAgent.created = true; 4719 updateLinkProperties(networkAgent, null); 4720 notifyIfacesChanged(); 4721 4722 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4723 scheduleUnvalidatedPrompt(networkAgent); 4724 4725 if (networkAgent.isVPN()) { 4726 // Temporarily disable the default proxy (not global). 4727 synchronized (mProxyLock) { 4728 if (!mDefaultProxyDisabled) { 4729 mDefaultProxyDisabled = true; 4730 if (mGlobalProxy == null && mDefaultProxy != null) { 4731 sendProxyBroadcast(null); 4732 } 4733 } 4734 } 4735 // TODO: support proxy per network. 4736 } 4737 4738 // Whether a particular NetworkRequest listen should cause signal strength thresholds to 4739 // be communicated to a particular NetworkAgent depends only on the network's immutable, 4740 // capabilities, so it only needs to be done once on initial connect, not every time the 4741 // network's capabilities change. Note that we do this before rematching the network, 4742 // so we could decide to tear it down immediately afterwards. That's fine though - on 4743 // disconnection NetworkAgents should stop any signal strength monitoring they have been 4744 // doing. 4745 updateSignalStrengthThresholds(networkAgent, "CONNECT", null); 4746 4747 // Consider network even though it is not yet validated. 4748 rematchNetworkAndRequests(networkAgent, ReapUnvalidatedNetworks.REAP); 4749 4750 // This has to happen after matching the requests, because callbacks are just requests. 4751 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4752 } else if (state == NetworkInfo.State.DISCONNECTED) { 4753 networkAgent.asyncChannel.disconnect(); 4754 if (networkAgent.isVPN()) { 4755 synchronized (mProxyLock) { 4756 if (mDefaultProxyDisabled) { 4757 mDefaultProxyDisabled = false; 4758 if (mGlobalProxy == null && mDefaultProxy != null) { 4759 sendProxyBroadcast(mDefaultProxy); 4760 } 4761 } 4762 } 4763 } 4764 } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) || 4765 state == NetworkInfo.State.SUSPENDED) { 4766 // going into or coming out of SUSPEND: rescore and notify 4767 if (networkAgent.getCurrentScore() != oldScore) { 4768 rematchAllNetworksAndRequests(networkAgent, oldScore); 4769 } 4770 notifyNetworkCallbacks(networkAgent, (state == NetworkInfo.State.SUSPENDED ? 4771 ConnectivityManager.CALLBACK_SUSPENDED : 4772 ConnectivityManager.CALLBACK_RESUMED)); 4773 mLegacyTypeTracker.update(networkAgent); 4774 } 4775 } 4776 4777 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4778 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4779 if (score < 0) { 4780 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4781 "). Bumping score to min of 0"); 4782 score = 0; 4783 } 4784 4785 final int oldScore = nai.getCurrentScore(); 4786 nai.setCurrentScore(score); 4787 4788 rematchAllNetworksAndRequests(nai, oldScore); 4789 4790 sendUpdatedScoreToFactories(nai); 4791 } 4792 4793 // notify only this one new request of the current state 4794 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4795 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4796 // TODO - read state from monitor to decide what to send. 4797// if (nai.networkMonitor.isLingering()) { 4798// notifyType = NetworkCallbacks.LOSING; 4799// } else if (nai.networkMonitor.isEvaluating()) { 4800// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4801// } 4802 if (nri.mPendingIntent == null) { 4803 callCallbackForRequest(nri, nai, notifyType); 4804 } else { 4805 sendPendingIntentForRequest(nri, nai, notifyType); 4806 } 4807 } 4808 4809 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, DetailedState state, int type) { 4810 // The NetworkInfo we actually send out has no bearing on the real 4811 // state of affairs. For example, if the default connection is mobile, 4812 // and a request for HIPRI has just gone away, we need to pretend that 4813 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4814 // the state to DISCONNECTED, even though the network is of type MOBILE 4815 // and is still connected. 4816 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4817 info.setType(type); 4818 if (state != DetailedState.DISCONNECTED) { 4819 info.setDetailedState(state, null, info.getExtraInfo()); 4820 sendConnectedBroadcast(info); 4821 } else { 4822 info.setDetailedState(state, info.getReason(), info.getExtraInfo()); 4823 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4824 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4825 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4826 if (info.isFailover()) { 4827 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4828 nai.networkInfo.setFailover(false); 4829 } 4830 if (info.getReason() != null) { 4831 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4832 } 4833 if (info.getExtraInfo() != null) { 4834 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4835 } 4836 NetworkAgentInfo newDefaultAgent = null; 4837 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4838 newDefaultAgent = getDefaultNetwork(); 4839 if (newDefaultAgent != null) { 4840 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4841 newDefaultAgent.networkInfo); 4842 } else { 4843 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4844 } 4845 } 4846 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4847 mDefaultInetConditionPublished); 4848 sendStickyBroadcast(intent); 4849 if (newDefaultAgent != null) { 4850 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4851 } 4852 } 4853 } 4854 4855 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4856 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4857 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4858 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4859 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4860 if (VDBG) log(" sending notification for " + nr); 4861 if (nri.mPendingIntent == null) { 4862 callCallbackForRequest(nri, networkAgent, notifyType); 4863 } else { 4864 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4865 } 4866 } 4867 } 4868 4869 private String notifyTypeToName(int notifyType) { 4870 switch (notifyType) { 4871 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4872 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4873 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4874 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4875 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4876 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4877 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4878 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4879 } 4880 return "UNKNOWN"; 4881 } 4882 4883 /** 4884 * Notify other system services that set of active ifaces has changed. 4885 */ 4886 private void notifyIfacesChanged() { 4887 try { 4888 mStatsService.forceUpdateIfaces(); 4889 } catch (Exception ignored) { 4890 } 4891 } 4892 4893 @Override 4894 public boolean addVpnAddress(String address, int prefixLength) { 4895 throwIfLockdownEnabled(); 4896 int user = UserHandle.getUserId(Binder.getCallingUid()); 4897 synchronized (mVpns) { 4898 return mVpns.get(user).addAddress(address, prefixLength); 4899 } 4900 } 4901 4902 @Override 4903 public boolean removeVpnAddress(String address, int prefixLength) { 4904 throwIfLockdownEnabled(); 4905 int user = UserHandle.getUserId(Binder.getCallingUid()); 4906 synchronized (mVpns) { 4907 return mVpns.get(user).removeAddress(address, prefixLength); 4908 } 4909 } 4910 4911 @Override 4912 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4913 throwIfLockdownEnabled(); 4914 int user = UserHandle.getUserId(Binder.getCallingUid()); 4915 boolean success; 4916 synchronized (mVpns) { 4917 success = mVpns.get(user).setUnderlyingNetworks(networks); 4918 } 4919 if (success) { 4920 notifyIfacesChanged(); 4921 } 4922 return success; 4923 } 4924 4925 @Override 4926 public String getCaptivePortalServerUrl() { 4927 return NetworkMonitor.getCaptivePortalServerUrl(mContext); 4928 } 4929 4930 @Override 4931 public void startNattKeepalive(Network network, int intervalSeconds, Messenger messenger, 4932 IBinder binder, String srcAddr, int srcPort, String dstAddr) { 4933 enforceKeepalivePermission(); 4934 mKeepaliveTracker.startNattKeepalive( 4935 getNetworkAgentInfoForNetwork(network), 4936 intervalSeconds, messenger, binder, 4937 srcAddr, srcPort, dstAddr, ConnectivityManager.PacketKeepalive.NATT_PORT); 4938 } 4939 4940 @Override 4941 public void stopKeepalive(Network network, int slot) { 4942 mHandler.sendMessage(mHandler.obtainMessage( 4943 NetworkAgent.CMD_STOP_PACKET_KEEPALIVE, slot, PacketKeepalive.SUCCESS, network)); 4944 } 4945 4946 @Override 4947 public void factoryReset() { 4948 enforceConnectivityInternalPermission(); 4949 4950 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 4951 return; 4952 } 4953 4954 final int userId = UserHandle.getCallingUserId(); 4955 4956 // Turn airplane mode off 4957 setAirplaneMode(false); 4958 4959 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 4960 // Untether 4961 for (String tether : getTetheredIfaces()) { 4962 untether(tether); 4963 } 4964 } 4965 4966 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 4967 // Turn VPN off 4968 VpnConfig vpnConfig = getVpnConfig(userId); 4969 if (vpnConfig != null) { 4970 if (vpnConfig.legacy) { 4971 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 4972 } else { 4973 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 4974 // in the future without user intervention. 4975 setVpnPackageAuthorization(vpnConfig.user, userId, false); 4976 4977 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 4978 } 4979 } 4980 } 4981 } 4982 4983 @VisibleForTesting 4984 public NetworkMonitor createNetworkMonitor(Context context, Handler handler, 4985 NetworkAgentInfo nai, NetworkRequest defaultRequest) { 4986 return new NetworkMonitor(context, handler, nai, defaultRequest); 4987 } 4988 4989} 4990