ConnectivityService.java revision 85cf78edc92b85ec90e91de42b14b84e202260f3
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server; 18 19import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE; 20import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; 21import static android.net.ConnectivityManager.NETID_UNSET; 22import static android.net.ConnectivityManager.TYPE_NONE; 23import static android.net.ConnectivityManager.TYPE_VPN; 24import static android.net.ConnectivityManager.getNetworkTypeName; 25import static android.net.ConnectivityManager.isNetworkTypeValid; 26import static android.net.NetworkCapabilities.NET_CAPABILITY_CAPTIVE_PORTAL; 27import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET; 28import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED; 29import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED; 30import static android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED; 31import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 32import static android.net.NetworkPolicyManager.RULE_REJECT_ALL; 33import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 34 35import android.annotation.Nullable; 36import android.app.AlarmManager; 37import android.app.Notification; 38import android.app.NotificationManager; 39import android.app.PendingIntent; 40import android.content.BroadcastReceiver; 41import android.content.ContentResolver; 42import android.content.Context; 43import android.content.Intent; 44import android.content.IntentFilter; 45import android.content.pm.PackageManager; 46import android.content.res.Configuration; 47import android.content.res.Resources; 48import android.database.ContentObserver; 49import android.net.ConnectivityManager; 50import android.net.IConnectivityManager; 51import android.net.INetworkManagementEventObserver; 52import android.net.INetworkPolicyListener; 53import android.net.INetworkPolicyManager; 54import android.net.INetworkStatsService; 55import android.net.LinkProperties; 56import android.net.LinkProperties.CompareResult; 57import android.net.Network; 58import android.net.NetworkAgent; 59import android.net.NetworkCapabilities; 60import android.net.NetworkConfig; 61import android.net.NetworkInfo; 62import android.net.NetworkInfo.DetailedState; 63import android.net.NetworkMisc; 64import android.net.NetworkQuotaInfo; 65import android.net.NetworkRequest; 66import android.net.NetworkState; 67import android.net.NetworkUtils; 68import android.net.Proxy; 69import android.net.ProxyInfo; 70import android.net.RouteInfo; 71import android.net.UidRange; 72import android.net.Uri; 73import android.os.Binder; 74import android.os.Bundle; 75import android.os.FileUtils; 76import android.os.Handler; 77import android.os.HandlerThread; 78import android.os.IBinder; 79import android.os.INetworkManagementService; 80import android.os.Looper; 81import android.os.Message; 82import android.os.Messenger; 83import android.os.ParcelFileDescriptor; 84import android.os.PowerManager; 85import android.os.Process; 86import android.os.RemoteException; 87import android.os.SystemClock; 88import android.os.SystemProperties; 89import android.os.UserHandle; 90import android.os.UserManager; 91import android.provider.Settings; 92import android.security.Credentials; 93import android.security.KeyStore; 94import android.telephony.TelephonyManager; 95import android.text.TextUtils; 96import android.util.LocalLog; 97import android.util.LocalLog.ReadOnlyLocalLog; 98import android.util.Pair; 99import android.util.Slog; 100import android.util.SparseArray; 101import android.util.SparseBooleanArray; 102import android.util.SparseIntArray; 103import android.util.Xml; 104 105import com.android.internal.R; 106import com.android.internal.annotations.GuardedBy; 107import com.android.internal.annotations.VisibleForTesting; 108import com.android.internal.app.IBatteryStats; 109import com.android.internal.net.LegacyVpnInfo; 110import com.android.internal.net.NetworkStatsFactory; 111import com.android.internal.net.VpnConfig; 112import com.android.internal.net.VpnInfo; 113import com.android.internal.net.VpnProfile; 114import com.android.internal.telephony.DctConstants; 115import com.android.internal.util.AsyncChannel; 116import com.android.internal.util.IndentingPrintWriter; 117import com.android.internal.util.XmlUtils; 118import com.android.server.am.BatteryStatsService; 119import com.android.server.connectivity.DataConnectionStats; 120import com.android.server.connectivity.NetworkDiagnostics; 121import com.android.server.connectivity.Nat464Xlat; 122import com.android.server.connectivity.NetworkAgentInfo; 123import com.android.server.connectivity.NetworkMonitor; 124import com.android.server.connectivity.PacManager; 125import com.android.server.connectivity.PermissionMonitor; 126import com.android.server.connectivity.Tethering; 127import com.android.server.connectivity.Vpn; 128import com.android.server.net.BaseNetworkObserver; 129import com.android.server.net.LockdownVpnTracker; 130import com.google.android.collect.Lists; 131import com.google.android.collect.Sets; 132 133import org.xmlpull.v1.XmlPullParser; 134import org.xmlpull.v1.XmlPullParserException; 135 136import java.io.File; 137import java.io.FileDescriptor; 138import java.io.FileNotFoundException; 139import java.io.FileReader; 140import java.io.IOException; 141import java.io.PrintWriter; 142import java.net.Inet4Address; 143import java.net.InetAddress; 144import java.net.UnknownHostException; 145import java.util.ArrayDeque; 146import java.util.ArrayList; 147import java.util.Arrays; 148import java.util.Collection; 149import java.util.HashMap; 150import java.util.HashSet; 151import java.util.Iterator; 152import java.util.List; 153import java.util.Map; 154import java.util.Objects; 155import java.util.concurrent.atomic.AtomicInteger; 156 157/** 158 * @hide 159 */ 160public class ConnectivityService extends IConnectivityManager.Stub 161 implements PendingIntent.OnFinished { 162 private static final String TAG = "ConnectivityService"; 163 164 private static final boolean DBG = true; 165 private static final boolean VDBG = false; 166 167 private static final boolean LOGD_RULES = false; 168 169 // TODO: create better separation between radio types and network types 170 171 // how long to wait before switching back to a radio's default network 172 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 173 // system property that can override the above value 174 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 175 "android.telephony.apn-restore"; 176 177 // How long to wait before putting up a "This network doesn't have an Internet connection, 178 // connect anyway?" dialog after the user selects a network that doesn't validate. 179 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 180 181 // How long to delay to removal of a pending intent based request. 182 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 183 private final int mReleasePendingIntentDelayMs; 184 185 private Tethering mTethering; 186 187 private final PermissionMonitor mPermissionMonitor; 188 189 private KeyStore mKeyStore; 190 191 @GuardedBy("mVpns") 192 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 193 194 private boolean mLockdownEnabled; 195 private LockdownVpnTracker mLockdownTracker; 196 197 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 198 private Object mRulesLock = new Object(); 199 /** Currently active network rules by UID. */ 200 private SparseIntArray mUidRules = new SparseIntArray(); 201 /** Set of ifaces that are costly. */ 202 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 203 204 final private Context mContext; 205 private int mNetworkPreference; 206 // 0 is full bad, 100 is full good 207 private int mDefaultInetConditionPublished = 0; 208 209 private int mNumDnsEntries; 210 211 private boolean mTestMode; 212 private static ConnectivityService sServiceInstance; 213 214 private INetworkManagementService mNetd; 215 private INetworkStatsService mStatsService; 216 private INetworkPolicyManager mPolicyManager; 217 218 private String mCurrentTcpBufferSizes; 219 220 private static final int ENABLED = 1; 221 private static final int DISABLED = 0; 222 223 private enum ReapUnvalidatedNetworks { 224 // Tear down networks that have no chance (e.g. even if validated) of becoming 225 // the highest scoring network satisfying a NetworkRequest. This should be passed when 226 // all networks have been rematched against all NetworkRequests. 227 REAP, 228 // Don't reap networks. This should be passed when some networks have not yet been 229 // rematched against all NetworkRequests. 230 DONT_REAP 231 }; 232 233 /** 234 * used internally to change our mobile data enabled flag 235 */ 236 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 237 238 /** 239 * used internally to clear a wakelock when transitioning 240 * from one net to another. Clear happens when we get a new 241 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 242 * after a timeout if no network is found (typically 1 min). 243 */ 244 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 245 246 /** 247 * used internally to reload global proxy settings 248 */ 249 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 250 251 /** 252 * used internally to send a sticky broadcast delayed. 253 */ 254 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 255 256 /** 257 * PAC manager has received new port. 258 */ 259 private static final int EVENT_PROXY_HAS_CHANGED = 16; 260 261 /** 262 * used internally when registering NetworkFactories 263 * obj = NetworkFactoryInfo 264 */ 265 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 266 267 /** 268 * used internally when registering NetworkAgents 269 * obj = Messenger 270 */ 271 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 272 273 /** 274 * used to add a network request 275 * includes a NetworkRequestInfo 276 */ 277 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 278 279 /** 280 * indicates a timeout period is over - check if we had a network yet or not 281 * and if not, call the timeout calback (but leave the request live until they 282 * cancel it. 283 * includes a NetworkRequestInfo 284 */ 285 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 286 287 /** 288 * used to add a network listener - no request 289 * includes a NetworkRequestInfo 290 */ 291 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 292 293 /** 294 * used to remove a network request, either a listener or a real request 295 * arg1 = UID of caller 296 * obj = NetworkRequest 297 */ 298 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 299 300 /** 301 * used internally when registering NetworkFactories 302 * obj = Messenger 303 */ 304 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 305 306 /** 307 * used internally to expire a wakelock when transitioning 308 * from one net to another. Expire happens when we fail to find 309 * a new network (typically after 1 minute) - 310 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 311 * a replacement network. 312 */ 313 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 314 315 /** 316 * Used internally to indicate the system is ready. 317 */ 318 private static final int EVENT_SYSTEM_READY = 25; 319 320 /** 321 * used to add a network request with a pending intent 322 * obj = NetworkRequestInfo 323 */ 324 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 325 326 /** 327 * used to remove a pending intent and its associated network request. 328 * arg1 = UID of caller 329 * obj = PendingIntent 330 */ 331 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 332 333 /** 334 * used to specify whether a network should be used even if unvalidated. 335 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 336 * arg2 = whether to remember this choice in the future (1 or 0) 337 * obj = network 338 */ 339 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 340 341 /** 342 * used to ask the user to confirm a connection to an unvalidated network. 343 * obj = network 344 */ 345 private static final int EVENT_PROMPT_UNVALIDATED = 29; 346 347 /** 348 * used internally to (re)configure mobile data always-on settings. 349 */ 350 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 351 352 /** 353 * used to add a network listener with a pending intent 354 * obj = NetworkRequestInfo 355 */ 356 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 357 358 /** Handler used for internal events. */ 359 final private InternalHandler mHandler; 360 /** Handler used for incoming {@link NetworkStateTracker} events. */ 361 final private NetworkStateTrackerHandler mTrackerHandler; 362 363 private boolean mSystemReady; 364 private Intent mInitialBroadcast; 365 366 private PowerManager.WakeLock mNetTransitionWakeLock; 367 private String mNetTransitionWakeLockCausedBy = ""; 368 private int mNetTransitionWakeLockSerialNumber; 369 private int mNetTransitionWakeLockTimeout; 370 private final PowerManager.WakeLock mPendingIntentWakeLock; 371 372 private InetAddress mDefaultDns; 373 374 // used in DBG mode to track inet condition reports 375 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 376 private ArrayList mInetLog; 377 378 // track the current default http proxy - tell the world if we get a new one (real change) 379 private volatile ProxyInfo mDefaultProxy = null; 380 private Object mProxyLock = new Object(); 381 private boolean mDefaultProxyDisabled = false; 382 383 // track the global proxy. 384 private ProxyInfo mGlobalProxy = null; 385 386 private PacManager mPacManager = null; 387 388 final private SettingsObserver mSettingsObserver; 389 390 private UserManager mUserManager; 391 392 NetworkConfig[] mNetConfigs; 393 int mNetworksDefined; 394 395 // the set of network types that can only be enabled by system/sig apps 396 List mProtectedNetworks; 397 398 private DataConnectionStats mDataConnectionStats; 399 400 TelephonyManager mTelephonyManager; 401 402 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 403 private final static int MIN_NET_ID = 100; // some reserved marks 404 private final static int MAX_NET_ID = 65535; 405 private int mNextNetId = MIN_NET_ID; 406 407 // sequence number of NetworkRequests 408 private int mNextNetworkRequestId = 1; 409 410 // Array of <Network,ReadOnlyLocalLogs> tracking network validation and results 411 private static final int MAX_VALIDATION_LOGS = 10; 412 private final ArrayDeque<Pair<Network,ReadOnlyLocalLog>> mValidationLogs = 413 new ArrayDeque<Pair<Network,ReadOnlyLocalLog>>(MAX_VALIDATION_LOGS); 414 415 private void addValidationLogs(ReadOnlyLocalLog log, Network network) { 416 synchronized(mValidationLogs) { 417 while (mValidationLogs.size() >= MAX_VALIDATION_LOGS) { 418 mValidationLogs.removeLast(); 419 } 420 mValidationLogs.addFirst(new Pair(network, log)); 421 } 422 } 423 424 /** 425 * Implements support for the legacy "one network per network type" model. 426 * 427 * We used to have a static array of NetworkStateTrackers, one for each 428 * network type, but that doesn't work any more now that we can have, 429 * for example, more that one wifi network. This class stores all the 430 * NetworkAgentInfo objects that support a given type, but the legacy 431 * API will only see the first one. 432 * 433 * It serves two main purposes: 434 * 435 * 1. Provide information about "the network for a given type" (since this 436 * API only supports one). 437 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 438 * the first network for a given type changes, or if the default network 439 * changes. 440 */ 441 private class LegacyTypeTracker { 442 443 private static final boolean DBG = true; 444 private static final boolean VDBG = false; 445 private static final String TAG = "CSLegacyTypeTracker"; 446 447 /** 448 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 449 * Each list holds references to all NetworkAgentInfos that are used to 450 * satisfy requests for that network type. 451 * 452 * This array is built out at startup such that an unsupported network 453 * doesn't get an ArrayList instance, making this a tristate: 454 * unsupported, supported but not active and active. 455 * 456 * The actual lists are populated when we scan the network types that 457 * are supported on this device. 458 */ 459 private ArrayList<NetworkAgentInfo> mTypeLists[]; 460 461 public LegacyTypeTracker() { 462 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 463 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 464 } 465 466 public void addSupportedType(int type) { 467 if (mTypeLists[type] != null) { 468 throw new IllegalStateException( 469 "legacy list for type " + type + "already initialized"); 470 } 471 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 472 } 473 474 public boolean isTypeSupported(int type) { 475 return isNetworkTypeValid(type) && mTypeLists[type] != null; 476 } 477 478 public NetworkAgentInfo getNetworkForType(int type) { 479 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 480 return mTypeLists[type].get(0); 481 } else { 482 return null; 483 } 484 } 485 486 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type, 487 boolean isDefaultNetwork) { 488 if (DBG) { 489 log("Sending " + (connected ? "connected" : "disconnected") + 490 " broadcast for type " + type + " " + nai.name() + 491 " isDefaultNetwork=" + isDefaultNetwork); 492 } 493 } 494 495 /** Adds the given network to the specified legacy type list. */ 496 public void add(int type, NetworkAgentInfo nai) { 497 if (!isTypeSupported(type)) { 498 return; // Invalid network type. 499 } 500 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 501 502 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 503 if (list.contains(nai)) { 504 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 505 return; 506 } 507 508 list.add(nai); 509 510 // Send a broadcast if this is the first network of its type or if it's the default. 511 final boolean isDefaultNetwork = isDefaultNetwork(nai); 512 if (list.size() == 1 || isDefaultNetwork) { 513 maybeLogBroadcast(nai, true, type, isDefaultNetwork); 514 sendLegacyNetworkBroadcast(nai, true, type); 515 } 516 } 517 518 /** Removes the given network from the specified legacy type list. */ 519 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 520 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 521 if (list == null || list.isEmpty()) { 522 return; 523 } 524 525 final boolean wasFirstNetwork = list.get(0).equals(nai); 526 527 if (!list.remove(nai)) { 528 return; 529 } 530 531 if (wasFirstNetwork || wasDefault) { 532 maybeLogBroadcast(nai, false, type, wasDefault); 533 sendLegacyNetworkBroadcast(nai, false, type); 534 } 535 536 if (!list.isEmpty() && wasFirstNetwork) { 537 if (DBG) log("Other network available for type " + type + 538 ", sending connected broadcast"); 539 final NetworkAgentInfo replacement = list.get(0); 540 maybeLogBroadcast(replacement, false, type, isDefaultNetwork(replacement)); 541 sendLegacyNetworkBroadcast(replacement, false, type); 542 } 543 } 544 545 /** Removes the given network from all legacy type lists. */ 546 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 547 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 548 for (int type = 0; type < mTypeLists.length; type++) { 549 remove(type, nai, wasDefault); 550 } 551 } 552 553 private String naiToString(NetworkAgentInfo nai) { 554 String name = (nai != null) ? nai.name() : "null"; 555 String state = (nai.networkInfo != null) ? 556 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 557 "???/???"; 558 return name + " " + state; 559 } 560 561 public void dump(IndentingPrintWriter pw) { 562 pw.println("mLegacyTypeTracker:"); 563 pw.increaseIndent(); 564 pw.print("Supported types:"); 565 for (int type = 0; type < mTypeLists.length; type++) { 566 if (mTypeLists[type] != null) pw.print(" " + type); 567 } 568 pw.println(); 569 pw.println("Current state:"); 570 pw.increaseIndent(); 571 for (int type = 0; type < mTypeLists.length; type++) { 572 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 573 for (NetworkAgentInfo nai : mTypeLists[type]) { 574 pw.println(type + " " + naiToString(nai)); 575 } 576 } 577 pw.decreaseIndent(); 578 pw.decreaseIndent(); 579 pw.println(); 580 } 581 582 // This class needs its own log method because it has a different TAG. 583 private void log(String s) { 584 Slog.d(TAG, s); 585 } 586 587 } 588 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 589 590 public ConnectivityService(Context context, INetworkManagementService netManager, 591 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 592 if (DBG) log("ConnectivityService starting up"); 593 594 mDefaultRequest = createInternetRequestForTransport(-1); 595 mNetworkRequests.put(mDefaultRequest, new NetworkRequestInfo( 596 null, mDefaultRequest, new Binder(), NetworkRequestInfo.REQUEST)); 597 598 mDefaultMobileDataRequest = createInternetRequestForTransport( 599 NetworkCapabilities.TRANSPORT_CELLULAR); 600 601 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 602 handlerThread.start(); 603 mHandler = new InternalHandler(handlerThread.getLooper()); 604 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 605 606 // setup our unique device name 607 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 608 String id = Settings.Secure.getString(context.getContentResolver(), 609 Settings.Secure.ANDROID_ID); 610 if (id != null && id.length() > 0) { 611 String name = new String("android-").concat(id); 612 SystemProperties.set("net.hostname", name); 613 } 614 } 615 616 // read our default dns server ip 617 String dns = Settings.Global.getString(context.getContentResolver(), 618 Settings.Global.DEFAULT_DNS_SERVER); 619 if (dns == null || dns.length() == 0) { 620 dns = context.getResources().getString( 621 com.android.internal.R.string.config_default_dns_server); 622 } 623 try { 624 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 625 } catch (IllegalArgumentException e) { 626 loge("Error setting defaultDns using " + dns); 627 } 628 629 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 630 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 631 632 mContext = checkNotNull(context, "missing Context"); 633 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 634 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 635 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 636 mKeyStore = KeyStore.getInstance(); 637 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 638 639 try { 640 mPolicyManager.registerListener(mPolicyListener); 641 } catch (RemoteException e) { 642 // ouch, no rules updates means some processes may never get network 643 loge("unable to register INetworkPolicyListener" + e.toString()); 644 } 645 646 final PowerManager powerManager = (PowerManager) context.getSystemService( 647 Context.POWER_SERVICE); 648 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 649 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 650 com.android.internal.R.integer.config_networkTransitionTimeout); 651 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 652 653 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 654 655 // TODO: What is the "correct" way to do determine if this is a wifi only device? 656 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 657 log("wifiOnly=" + wifiOnly); 658 String[] naStrings = context.getResources().getStringArray( 659 com.android.internal.R.array.networkAttributes); 660 for (String naString : naStrings) { 661 try { 662 NetworkConfig n = new NetworkConfig(naString); 663 if (VDBG) log("naString=" + naString + " config=" + n); 664 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 665 loge("Error in networkAttributes - ignoring attempt to define type " + 666 n.type); 667 continue; 668 } 669 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 670 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 671 n.type); 672 continue; 673 } 674 if (mNetConfigs[n.type] != null) { 675 loge("Error in networkAttributes - ignoring attempt to redefine type " + 676 n.type); 677 continue; 678 } 679 mLegacyTypeTracker.addSupportedType(n.type); 680 681 mNetConfigs[n.type] = n; 682 mNetworksDefined++; 683 } catch(Exception e) { 684 // ignore it - leave the entry null 685 } 686 } 687 688 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 689 if (mNetConfigs[TYPE_VPN] == null) { 690 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 691 // don't need to add TYPE_VPN to mNetConfigs. 692 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 693 mNetworksDefined++; // used only in the log() statement below. 694 } 695 696 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 697 698 mProtectedNetworks = new ArrayList<Integer>(); 699 int[] protectedNetworks = context.getResources().getIntArray( 700 com.android.internal.R.array.config_protectedNetworks); 701 for (int p : protectedNetworks) { 702 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 703 mProtectedNetworks.add(p); 704 } else { 705 if (DBG) loge("Ignoring protectedNetwork " + p); 706 } 707 } 708 709 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 710 && SystemProperties.get("ro.build.type").equals("eng"); 711 712 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 713 714 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 715 716 //set up the listener for user state for creating user VPNs 717 IntentFilter intentFilter = new IntentFilter(); 718 intentFilter.addAction(Intent.ACTION_USER_STARTING); 719 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 720 mContext.registerReceiverAsUser( 721 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 722 723 try { 724 mNetd.registerObserver(mTethering); 725 mNetd.registerObserver(mDataActivityObserver); 726 } catch (RemoteException e) { 727 loge("Error registering observer :" + e); 728 } 729 730 if (DBG) { 731 mInetLog = new ArrayList(); 732 } 733 734 mSettingsObserver = new SettingsObserver(mContext, mHandler); 735 registerSettingsCallbacks(); 736 737 mDataConnectionStats = new DataConnectionStats(mContext); 738 mDataConnectionStats.startMonitoring(); 739 740 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 741 742 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 743 } 744 745 private NetworkRequest createInternetRequestForTransport(int transportType) { 746 NetworkCapabilities netCap = new NetworkCapabilities(); 747 netCap.addCapability(NET_CAPABILITY_INTERNET); 748 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 749 if (transportType > -1) { 750 netCap.addTransportType(transportType); 751 } 752 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 753 } 754 755 private void handleMobileDataAlwaysOn() { 756 final boolean enable = (Settings.Global.getInt( 757 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 758 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 759 if (enable == isEnabled) { 760 return; // Nothing to do. 761 } 762 763 if (enable) { 764 handleRegisterNetworkRequest(new NetworkRequestInfo( 765 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestInfo.REQUEST)); 766 } else { 767 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 768 } 769 } 770 771 private void registerSettingsCallbacks() { 772 // Watch for global HTTP proxy changes. 773 mSettingsObserver.observe( 774 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 775 EVENT_APPLY_GLOBAL_HTTP_PROXY); 776 777 // Watch for whether or not to keep mobile data always on. 778 mSettingsObserver.observe( 779 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 780 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 781 } 782 783 private synchronized int nextNetworkRequestId() { 784 return mNextNetworkRequestId++; 785 } 786 787 @VisibleForTesting 788 protected int reserveNetId() { 789 synchronized (mNetworkForNetId) { 790 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 791 int netId = mNextNetId; 792 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 793 // Make sure NetID unused. http://b/16815182 794 if (!mNetIdInUse.get(netId)) { 795 mNetIdInUse.put(netId, true); 796 return netId; 797 } 798 } 799 } 800 throw new IllegalStateException("No free netIds"); 801 } 802 803 private NetworkState getFilteredNetworkState(int networkType, int uid) { 804 NetworkInfo info = null; 805 LinkProperties lp = null; 806 NetworkCapabilities nc = null; 807 Network network = null; 808 String subscriberId = null; 809 810 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 811 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 812 if (nai != null) { 813 synchronized (nai) { 814 info = new NetworkInfo(nai.networkInfo); 815 lp = new LinkProperties(nai.linkProperties); 816 nc = new NetworkCapabilities(nai.networkCapabilities); 817 // Network objects are outwardly immutable so there is no point to duplicating. 818 // Duplicating also precludes sharing socket factories and connection pools. 819 network = nai.network; 820 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 821 } 822 info.setType(networkType); 823 } else { 824 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 825 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 826 info.setIsAvailable(true); 827 lp = new LinkProperties(); 828 nc = new NetworkCapabilities(); 829 network = null; 830 } 831 info = getFilteredNetworkInfo(info, lp, uid); 832 } 833 834 return new NetworkState(info, lp, nc, network, subscriberId, null); 835 } 836 837 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 838 if (network == null) { 839 return null; 840 } 841 synchronized (mNetworkForNetId) { 842 return mNetworkForNetId.get(network.netId); 843 } 844 }; 845 846 private Network[] getVpnUnderlyingNetworks(int uid) { 847 if (!mLockdownEnabled) { 848 int user = UserHandle.getUserId(uid); 849 synchronized (mVpns) { 850 Vpn vpn = mVpns.get(user); 851 if (vpn != null && vpn.appliesToUid(uid)) { 852 return vpn.getUnderlyingNetworks(); 853 } 854 } 855 } 856 return null; 857 } 858 859 private NetworkState getUnfilteredActiveNetworkState(int uid) { 860 NetworkInfo info = null; 861 LinkProperties lp = null; 862 NetworkCapabilities nc = null; 863 Network network = null; 864 String subscriberId = null; 865 866 NetworkAgentInfo nai = getDefaultNetwork(); 867 868 final Network[] networks = getVpnUnderlyingNetworks(uid); 869 if (networks != null) { 870 // getUnderlyingNetworks() returns: 871 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 872 // empty array => the VPN explicitly said "no default network". 873 // non-empty array => the VPN specified one or more default networks; we use the 874 // first one. 875 if (networks.length > 0) { 876 nai = getNetworkAgentInfoForNetwork(networks[0]); 877 } else { 878 nai = null; 879 } 880 } 881 882 if (nai != null) { 883 synchronized (nai) { 884 info = new NetworkInfo(nai.networkInfo); 885 lp = new LinkProperties(nai.linkProperties); 886 nc = new NetworkCapabilities(nai.networkCapabilities); 887 // Network objects are outwardly immutable so there is no point to duplicating. 888 // Duplicating also precludes sharing socket factories and connection pools. 889 network = nai.network; 890 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 891 } 892 } 893 894 return new NetworkState(info, lp, nc, network, subscriberId, null); 895 } 896 897 /** 898 * Check if UID should be blocked from using the network with the given LinkProperties. 899 */ 900 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 901 final boolean networkCostly; 902 final int uidRules; 903 904 final String iface = (lp == null ? "" : lp.getInterfaceName()); 905 synchronized (mRulesLock) { 906 networkCostly = mMeteredIfaces.contains(iface); 907 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 908 } 909 910 if ((uidRules & RULE_REJECT_ALL) != 0 911 || (networkCostly && (uidRules & RULE_REJECT_METERED) != 0)) { 912 return true; 913 } 914 915 // no restrictive rules; network is visible 916 return false; 917 } 918 919 /** 920 * Return a filtered {@link NetworkInfo}, potentially marked 921 * {@link DetailedState#BLOCKED} based on 922 * {@link #isNetworkWithLinkPropertiesBlocked}. 923 */ 924 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 925 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 926 // network is blocked; clone and override state 927 info = new NetworkInfo(info); 928 info.setDetailedState(DetailedState.BLOCKED, null, null); 929 if (VDBG) { 930 log("returning Blocked NetworkInfo for ifname=" + 931 lp.getInterfaceName() + ", uid=" + uid); 932 } 933 } 934 if (info != null && mLockdownTracker != null) { 935 info = mLockdownTracker.augmentNetworkInfo(info); 936 if (VDBG) log("returning Locked NetworkInfo"); 937 } 938 return info; 939 } 940 941 /** 942 * Return NetworkInfo for the active (i.e., connected) network interface. 943 * It is assumed that at most one network is active at a time. If more 944 * than one is active, it is indeterminate which will be returned. 945 * @return the info for the active network, or {@code null} if none is 946 * active 947 */ 948 @Override 949 public NetworkInfo getActiveNetworkInfo() { 950 enforceAccessPermission(); 951 final int uid = Binder.getCallingUid(); 952 NetworkState state = getUnfilteredActiveNetworkState(uid); 953 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 954 } 955 956 @Override 957 public Network getActiveNetwork() { 958 enforceAccessPermission(); 959 final int uid = Binder.getCallingUid(); 960 final int user = UserHandle.getUserId(uid); 961 int vpnNetId = NETID_UNSET; 962 synchronized (mVpns) { 963 final Vpn vpn = mVpns.get(user); 964 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 965 } 966 NetworkAgentInfo nai; 967 if (vpnNetId != NETID_UNSET) { 968 synchronized (mNetworkForNetId) { 969 nai = mNetworkForNetId.get(vpnNetId); 970 } 971 if (nai != null) return nai.network; 972 } 973 nai = getDefaultNetwork(); 974 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 975 return nai != null ? nai.network : null; 976 } 977 978 public NetworkInfo getActiveNetworkInfoUnfiltered() { 979 enforceAccessPermission(); 980 final int uid = Binder.getCallingUid(); 981 NetworkState state = getUnfilteredActiveNetworkState(uid); 982 return state.networkInfo; 983 } 984 985 @Override 986 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 987 enforceConnectivityInternalPermission(); 988 NetworkState state = getUnfilteredActiveNetworkState(uid); 989 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 990 } 991 992 @Override 993 public NetworkInfo getNetworkInfo(int networkType) { 994 enforceAccessPermission(); 995 final int uid = Binder.getCallingUid(); 996 if (getVpnUnderlyingNetworks(uid) != null) { 997 // A VPN is active, so we may need to return one of its underlying networks. This 998 // information is not available in LegacyTypeTracker, so we have to get it from 999 // getUnfilteredActiveNetworkState. 1000 NetworkState state = getUnfilteredActiveNetworkState(uid); 1001 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1002 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1003 } 1004 } 1005 NetworkState state = getFilteredNetworkState(networkType, uid); 1006 return state.networkInfo; 1007 } 1008 1009 @Override 1010 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1011 enforceAccessPermission(); 1012 final int uid = Binder.getCallingUid(); 1013 NetworkInfo info = null; 1014 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1015 if (nai != null) { 1016 synchronized (nai) { 1017 info = new NetworkInfo(nai.networkInfo); 1018 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1019 } 1020 } 1021 return info; 1022 } 1023 1024 @Override 1025 public NetworkInfo[] getAllNetworkInfo() { 1026 enforceAccessPermission(); 1027 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1028 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1029 networkType++) { 1030 NetworkInfo info = getNetworkInfo(networkType); 1031 if (info != null) { 1032 result.add(info); 1033 } 1034 } 1035 return result.toArray(new NetworkInfo[result.size()]); 1036 } 1037 1038 @Override 1039 public Network getNetworkForType(int networkType) { 1040 enforceAccessPermission(); 1041 final int uid = Binder.getCallingUid(); 1042 NetworkState state = getFilteredNetworkState(networkType, uid); 1043 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1044 return state.network; 1045 } 1046 return null; 1047 } 1048 1049 @Override 1050 public Network[] getAllNetworks() { 1051 enforceAccessPermission(); 1052 synchronized (mNetworkForNetId) { 1053 final Network[] result = new Network[mNetworkForNetId.size()]; 1054 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1055 result[i] = mNetworkForNetId.valueAt(i).network; 1056 } 1057 return result; 1058 } 1059 } 1060 1061 @Override 1062 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1063 // The basic principle is: if an app's traffic could possibly go over a 1064 // network, without the app doing anything multinetwork-specific, 1065 // (hence, by "default"), then include that network's capabilities in 1066 // the array. 1067 // 1068 // In the normal case, app traffic only goes over the system's default 1069 // network connection, so that's the only network returned. 1070 // 1071 // With a VPN in force, some app traffic may go into the VPN, and thus 1072 // over whatever underlying networks the VPN specifies, while other app 1073 // traffic may go over the system default network (e.g.: a split-tunnel 1074 // VPN, or an app disallowed by the VPN), so the set of networks 1075 // returned includes the VPN's underlying networks and the system 1076 // default. 1077 enforceAccessPermission(); 1078 1079 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1080 1081 NetworkAgentInfo nai = getDefaultNetwork(); 1082 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1083 if (nc != null) { 1084 result.put(nai.network, nc); 1085 } 1086 1087 if (!mLockdownEnabled) { 1088 synchronized (mVpns) { 1089 Vpn vpn = mVpns.get(userId); 1090 if (vpn != null) { 1091 Network[] networks = vpn.getUnderlyingNetworks(); 1092 if (networks != null) { 1093 for (Network network : networks) { 1094 nai = getNetworkAgentInfoForNetwork(network); 1095 nc = getNetworkCapabilitiesInternal(nai); 1096 if (nc != null) { 1097 result.put(network, nc); 1098 } 1099 } 1100 } 1101 } 1102 } 1103 } 1104 1105 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1106 out = result.values().toArray(out); 1107 return out; 1108 } 1109 1110 @Override 1111 public boolean isNetworkSupported(int networkType) { 1112 enforceAccessPermission(); 1113 return mLegacyTypeTracker.isTypeSupported(networkType); 1114 } 1115 1116 /** 1117 * Return LinkProperties for the active (i.e., connected) default 1118 * network interface. It is assumed that at most one default network 1119 * is active at a time. If more than one is active, it is indeterminate 1120 * which will be returned. 1121 * @return the ip properties for the active network, or {@code null} if 1122 * none is active 1123 */ 1124 @Override 1125 public LinkProperties getActiveLinkProperties() { 1126 enforceAccessPermission(); 1127 final int uid = Binder.getCallingUid(); 1128 NetworkState state = getUnfilteredActiveNetworkState(uid); 1129 return state.linkProperties; 1130 } 1131 1132 @Override 1133 public LinkProperties getLinkPropertiesForType(int networkType) { 1134 enforceAccessPermission(); 1135 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1136 if (nai != null) { 1137 synchronized (nai) { 1138 return new LinkProperties(nai.linkProperties); 1139 } 1140 } 1141 return null; 1142 } 1143 1144 // TODO - this should be ALL networks 1145 @Override 1146 public LinkProperties getLinkProperties(Network network) { 1147 enforceAccessPermission(); 1148 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1149 if (nai != null) { 1150 synchronized (nai) { 1151 return new LinkProperties(nai.linkProperties); 1152 } 1153 } 1154 return null; 1155 } 1156 1157 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1158 if (nai != null) { 1159 synchronized (nai) { 1160 if (nai.networkCapabilities != null) { 1161 return new NetworkCapabilities(nai.networkCapabilities); 1162 } 1163 } 1164 } 1165 return null; 1166 } 1167 1168 @Override 1169 public NetworkCapabilities getNetworkCapabilities(Network network) { 1170 enforceAccessPermission(); 1171 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1172 } 1173 1174 @Override 1175 public NetworkState[] getAllNetworkState() { 1176 // Require internal since we're handing out IMSI details 1177 enforceConnectivityInternalPermission(); 1178 1179 final ArrayList<NetworkState> result = Lists.newArrayList(); 1180 for (Network network : getAllNetworks()) { 1181 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1182 if (nai != null) { 1183 synchronized (nai) { 1184 final String subscriberId = (nai.networkMisc != null) 1185 ? nai.networkMisc.subscriberId : null; 1186 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1187 nai.networkCapabilities, network, subscriberId, null)); 1188 } 1189 } 1190 } 1191 return result.toArray(new NetworkState[result.size()]); 1192 } 1193 1194 @Override 1195 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1196 enforceAccessPermission(); 1197 final int uid = Binder.getCallingUid(); 1198 final long token = Binder.clearCallingIdentity(); 1199 try { 1200 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1201 if (state.networkInfo != null) { 1202 try { 1203 return mPolicyManager.getNetworkQuotaInfo(state); 1204 } catch (RemoteException e) { 1205 } 1206 } 1207 return null; 1208 } finally { 1209 Binder.restoreCallingIdentity(token); 1210 } 1211 } 1212 1213 @Override 1214 public boolean isActiveNetworkMetered() { 1215 enforceAccessPermission(); 1216 final int uid = Binder.getCallingUid(); 1217 final long token = Binder.clearCallingIdentity(); 1218 try { 1219 return isActiveNetworkMeteredUnchecked(uid); 1220 } finally { 1221 Binder.restoreCallingIdentity(token); 1222 } 1223 } 1224 1225 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1226 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1227 if (state.networkInfo != null) { 1228 try { 1229 return mPolicyManager.isNetworkMetered(state); 1230 } catch (RemoteException e) { 1231 } 1232 } 1233 return false; 1234 } 1235 1236 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1237 @Override 1238 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1239 int deviceType = Integer.parseInt(label); 1240 sendDataActivityBroadcast(deviceType, active, tsNanos); 1241 } 1242 }; 1243 1244 /** 1245 * Ensure that a network route exists to deliver traffic to the specified 1246 * host via the specified network interface. 1247 * @param networkType the type of the network over which traffic to the 1248 * specified host is to be routed 1249 * @param hostAddress the IP address of the host to which the route is 1250 * desired 1251 * @return {@code true} on success, {@code false} on failure 1252 */ 1253 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1254 enforceChangePermission(); 1255 if (mProtectedNetworks.contains(networkType)) { 1256 enforceConnectivityInternalPermission(); 1257 } 1258 1259 InetAddress addr; 1260 try { 1261 addr = InetAddress.getByAddress(hostAddress); 1262 } catch (UnknownHostException e) { 1263 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1264 return false; 1265 } 1266 1267 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1268 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1269 return false; 1270 } 1271 1272 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1273 if (nai == null) { 1274 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1275 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1276 } else { 1277 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1278 } 1279 return false; 1280 } 1281 1282 DetailedState netState; 1283 synchronized (nai) { 1284 netState = nai.networkInfo.getDetailedState(); 1285 } 1286 1287 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1288 if (VDBG) { 1289 log("requestRouteToHostAddress on down network " 1290 + "(" + networkType + ") - dropped" 1291 + " netState=" + netState); 1292 } 1293 return false; 1294 } 1295 1296 final int uid = Binder.getCallingUid(); 1297 final long token = Binder.clearCallingIdentity(); 1298 try { 1299 LinkProperties lp; 1300 int netId; 1301 synchronized (nai) { 1302 lp = nai.linkProperties; 1303 netId = nai.network.netId; 1304 } 1305 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1306 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1307 return ok; 1308 } finally { 1309 Binder.restoreCallingIdentity(token); 1310 } 1311 } 1312 1313 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1314 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1315 if (bestRoute == null) { 1316 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1317 } else { 1318 String iface = bestRoute.getInterface(); 1319 if (bestRoute.getGateway().equals(addr)) { 1320 // if there is no better route, add the implied hostroute for our gateway 1321 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1322 } else { 1323 // if we will connect to this through another route, add a direct route 1324 // to it's gateway 1325 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1326 } 1327 } 1328 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1329 try { 1330 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1331 } catch (Exception e) { 1332 // never crash - catch them all 1333 if (DBG) loge("Exception trying to add a route: " + e); 1334 return false; 1335 } 1336 return true; 1337 } 1338 1339 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1340 @Override 1341 public void onUidRulesChanged(int uid, int uidRules) { 1342 // caller is NPMS, since we only register with them 1343 if (LOGD_RULES) { 1344 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1345 } 1346 1347 synchronized (mRulesLock) { 1348 // skip update when we've already applied rules 1349 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1350 if (oldRules == uidRules) return; 1351 1352 mUidRules.put(uid, uidRules); 1353 } 1354 1355 // TODO: notify UID when it has requested targeted updates 1356 } 1357 1358 @Override 1359 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1360 // caller is NPMS, since we only register with them 1361 if (LOGD_RULES) { 1362 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1363 } 1364 1365 synchronized (mRulesLock) { 1366 mMeteredIfaces.clear(); 1367 for (String iface : meteredIfaces) { 1368 mMeteredIfaces.add(iface); 1369 } 1370 } 1371 } 1372 1373 @Override 1374 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1375 // caller is NPMS, since we only register with them 1376 if (LOGD_RULES) { 1377 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1378 } 1379 } 1380 }; 1381 1382 /** 1383 * Require that the caller is either in the same user or has appropriate permission to interact 1384 * across users. 1385 * 1386 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1387 */ 1388 private void enforceCrossUserPermission(int userId) { 1389 if (userId == UserHandle.getCallingUserId()) { 1390 // Not a cross-user call. 1391 return; 1392 } 1393 mContext.enforceCallingOrSelfPermission( 1394 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1395 "ConnectivityService"); 1396 } 1397 1398 private void enforceInternetPermission() { 1399 mContext.enforceCallingOrSelfPermission( 1400 android.Manifest.permission.INTERNET, 1401 "ConnectivityService"); 1402 } 1403 1404 private void enforceAccessPermission() { 1405 mContext.enforceCallingOrSelfPermission( 1406 android.Manifest.permission.ACCESS_NETWORK_STATE, 1407 "ConnectivityService"); 1408 } 1409 1410 private void enforceChangePermission() { 1411 mContext.enforceCallingOrSelfPermission( 1412 android.Manifest.permission.CHANGE_NETWORK_STATE, 1413 "ConnectivityService"); 1414 } 1415 1416 private void enforceTetherAccessPermission() { 1417 mContext.enforceCallingOrSelfPermission( 1418 android.Manifest.permission.ACCESS_NETWORK_STATE, 1419 "ConnectivityService"); 1420 } 1421 1422 private void enforceConnectivityInternalPermission() { 1423 mContext.enforceCallingOrSelfPermission( 1424 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1425 "ConnectivityService"); 1426 } 1427 1428 public void sendConnectedBroadcast(NetworkInfo info) { 1429 enforceConnectivityInternalPermission(); 1430 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1431 } 1432 1433 private void sendInetConditionBroadcast(NetworkInfo info) { 1434 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1435 } 1436 1437 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1438 if (mLockdownTracker != null) { 1439 info = mLockdownTracker.augmentNetworkInfo(info); 1440 } 1441 1442 Intent intent = new Intent(bcastType); 1443 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1444 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1445 if (info.isFailover()) { 1446 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1447 info.setFailover(false); 1448 } 1449 if (info.getReason() != null) { 1450 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1451 } 1452 if (info.getExtraInfo() != null) { 1453 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1454 info.getExtraInfo()); 1455 } 1456 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1457 return intent; 1458 } 1459 1460 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1461 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1462 } 1463 1464 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1465 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1466 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1467 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1468 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1469 final long ident = Binder.clearCallingIdentity(); 1470 try { 1471 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1472 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1473 } finally { 1474 Binder.restoreCallingIdentity(ident); 1475 } 1476 } 1477 1478 private void sendStickyBroadcast(Intent intent) { 1479 synchronized(this) { 1480 if (!mSystemReady) { 1481 mInitialBroadcast = new Intent(intent); 1482 } 1483 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1484 if (DBG) { 1485 log("sendStickyBroadcast: action=" + intent.getAction()); 1486 } 1487 1488 final long ident = Binder.clearCallingIdentity(); 1489 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1490 final IBatteryStats bs = BatteryStatsService.getService(); 1491 try { 1492 NetworkInfo ni = intent.getParcelableExtra( 1493 ConnectivityManager.EXTRA_NETWORK_INFO); 1494 bs.noteConnectivityChanged(intent.getIntExtra( 1495 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1496 ni != null ? ni.getState().toString() : "?"); 1497 } catch (RemoteException e) { 1498 } 1499 } 1500 try { 1501 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1502 } finally { 1503 Binder.restoreCallingIdentity(ident); 1504 } 1505 } 1506 } 1507 1508 void systemReady() { 1509 loadGlobalProxy(); 1510 1511 synchronized(this) { 1512 mSystemReady = true; 1513 if (mInitialBroadcast != null) { 1514 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1515 mInitialBroadcast = null; 1516 } 1517 } 1518 // load the global proxy at startup 1519 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1520 1521 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1522 // for user to unlock device. 1523 if (!updateLockdownVpn()) { 1524 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1525 mContext.registerReceiver(mUserPresentReceiver, filter); 1526 } 1527 1528 // Configure whether mobile data is always on. 1529 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1530 1531 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1532 1533 mPermissionMonitor.startMonitoring(); 1534 } 1535 1536 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1537 @Override 1538 public void onReceive(Context context, Intent intent) { 1539 // Try creating lockdown tracker, since user present usually means 1540 // unlocked keystore. 1541 if (updateLockdownVpn()) { 1542 mContext.unregisterReceiver(this); 1543 } 1544 } 1545 }; 1546 1547 /** 1548 * Setup data activity tracking for the given network. 1549 * 1550 * Every {@code setupDataActivityTracking} should be paired with a 1551 * {@link #removeDataActivityTracking} for cleanup. 1552 */ 1553 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1554 final String iface = networkAgent.linkProperties.getInterfaceName(); 1555 1556 final int timeout; 1557 int type = ConnectivityManager.TYPE_NONE; 1558 1559 if (networkAgent.networkCapabilities.hasTransport( 1560 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1561 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1562 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1563 5); 1564 type = ConnectivityManager.TYPE_MOBILE; 1565 } else if (networkAgent.networkCapabilities.hasTransport( 1566 NetworkCapabilities.TRANSPORT_WIFI)) { 1567 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1568 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1569 15); 1570 type = ConnectivityManager.TYPE_WIFI; 1571 } else { 1572 // do not track any other networks 1573 timeout = 0; 1574 } 1575 1576 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1577 try { 1578 mNetd.addIdleTimer(iface, timeout, type); 1579 } catch (Exception e) { 1580 // You shall not crash! 1581 loge("Exception in setupDataActivityTracking " + e); 1582 } 1583 } 1584 } 1585 1586 /** 1587 * Remove data activity tracking when network disconnects. 1588 */ 1589 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1590 final String iface = networkAgent.linkProperties.getInterfaceName(); 1591 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1592 1593 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1594 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1595 try { 1596 // the call fails silently if no idletimer setup for this interface 1597 mNetd.removeIdleTimer(iface); 1598 } catch (Exception e) { 1599 loge("Exception in removeDataActivityTracking " + e); 1600 } 1601 } 1602 } 1603 1604 /** 1605 * Reads the network specific MTU size from reources. 1606 * and set it on it's iface. 1607 */ 1608 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1609 final String iface = newLp.getInterfaceName(); 1610 final int mtu = newLp.getMtu(); 1611 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1612 if (VDBG) log("identical MTU - not setting"); 1613 return; 1614 } 1615 1616 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1617 loge("Unexpected mtu value: " + mtu + ", " + iface); 1618 return; 1619 } 1620 1621 // Cannot set MTU without interface name 1622 if (TextUtils.isEmpty(iface)) { 1623 loge("Setting MTU size with null iface."); 1624 return; 1625 } 1626 1627 try { 1628 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1629 mNetd.setMtu(iface, mtu); 1630 } catch (Exception e) { 1631 Slog.e(TAG, "exception in setMtu()" + e); 1632 } 1633 } 1634 1635 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1636 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1637 1638 // Overridden for testing purposes to avoid writing to SystemProperties. 1639 @VisibleForTesting 1640 protected int getDefaultTcpRwnd() { 1641 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1642 } 1643 1644 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1645 if (isDefaultNetwork(nai) == false) { 1646 return; 1647 } 1648 1649 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1650 String[] values = null; 1651 if (tcpBufferSizes != null) { 1652 values = tcpBufferSizes.split(","); 1653 } 1654 1655 if (values == null || values.length != 6) { 1656 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1657 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1658 values = tcpBufferSizes.split(","); 1659 } 1660 1661 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1662 1663 try { 1664 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1665 1666 final String prefix = "/sys/kernel/ipv4/tcp_"; 1667 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1668 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1669 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1670 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1671 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1672 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1673 mCurrentTcpBufferSizes = tcpBufferSizes; 1674 } catch (IOException e) { 1675 loge("Can't set TCP buffer sizes:" + e); 1676 } 1677 1678 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1679 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1680 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1681 if (rwndValue != 0) { 1682 SystemProperties.set(sysctlKey, rwndValue.toString()); 1683 } 1684 } 1685 1686 private void flushVmDnsCache() { 1687 /* 1688 * Tell the VMs to toss their DNS caches 1689 */ 1690 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1691 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1692 /* 1693 * Connectivity events can happen before boot has completed ... 1694 */ 1695 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1696 final long ident = Binder.clearCallingIdentity(); 1697 try { 1698 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1699 } finally { 1700 Binder.restoreCallingIdentity(ident); 1701 } 1702 } 1703 1704 @Override 1705 public int getRestoreDefaultNetworkDelay(int networkType) { 1706 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1707 NETWORK_RESTORE_DELAY_PROP_NAME); 1708 if(restoreDefaultNetworkDelayStr != null && 1709 restoreDefaultNetworkDelayStr.length() != 0) { 1710 try { 1711 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1712 } catch (NumberFormatException e) { 1713 } 1714 } 1715 // if the system property isn't set, use the value for the apn type 1716 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1717 1718 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1719 (mNetConfigs[networkType] != null)) { 1720 ret = mNetConfigs[networkType].restoreTime; 1721 } 1722 return ret; 1723 } 1724 1725 private boolean argsContain(String[] args, String target) { 1726 for (String arg : args) { 1727 if (arg.equals(target)) return true; 1728 } 1729 return false; 1730 } 1731 1732 @Override 1733 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1734 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1735 if (mContext.checkCallingOrSelfPermission( 1736 android.Manifest.permission.DUMP) 1737 != PackageManager.PERMISSION_GRANTED) { 1738 pw.println("Permission Denial: can't dump ConnectivityService " + 1739 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1740 Binder.getCallingUid()); 1741 return; 1742 } 1743 1744 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1745 if (argsContain(args, "--diag")) { 1746 final long DIAG_TIME_MS = 5000; 1747 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1748 // Start gathering diagnostic information. 1749 netDiags.add(new NetworkDiagnostics( 1750 nai.network, 1751 new LinkProperties(nai.linkProperties), 1752 DIAG_TIME_MS)); 1753 } 1754 1755 for (NetworkDiagnostics netDiag : netDiags) { 1756 pw.println(); 1757 netDiag.waitForMeasurements(); 1758 netDiag.dump(pw); 1759 } 1760 1761 return; 1762 } 1763 1764 pw.print("NetworkFactories for:"); 1765 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1766 pw.print(" " + nfi.name); 1767 } 1768 pw.println(); 1769 pw.println(); 1770 1771 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 1772 pw.print("Active default network: "); 1773 if (defaultNai == null) { 1774 pw.println("none"); 1775 } else { 1776 pw.println(defaultNai.network.netId); 1777 } 1778 pw.println(); 1779 1780 pw.println("Current Networks:"); 1781 pw.increaseIndent(); 1782 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1783 pw.println(nai.toString()); 1784 pw.increaseIndent(); 1785 pw.println("Requests:"); 1786 pw.increaseIndent(); 1787 for (int i = 0; i < nai.networkRequests.size(); i++) { 1788 pw.println(nai.networkRequests.valueAt(i).toString()); 1789 } 1790 pw.decreaseIndent(); 1791 pw.println("Lingered:"); 1792 pw.increaseIndent(); 1793 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1794 pw.decreaseIndent(); 1795 pw.decreaseIndent(); 1796 } 1797 pw.decreaseIndent(); 1798 pw.println(); 1799 1800 pw.println("Network Requests:"); 1801 pw.increaseIndent(); 1802 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1803 pw.println(nri.toString()); 1804 } 1805 pw.println(); 1806 pw.decreaseIndent(); 1807 1808 mLegacyTypeTracker.dump(pw); 1809 1810 synchronized (this) { 1811 pw.print("mNetTransitionWakeLock: currently " + 1812 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1813 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1814 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1815 } else { 1816 pw.println(", last requested never"); 1817 } 1818 } 1819 pw.println(); 1820 1821 mTethering.dump(fd, pw, args); 1822 1823 if (mInetLog != null && mInetLog.size() > 0) { 1824 pw.println(); 1825 pw.println("Inet condition reports:"); 1826 pw.increaseIndent(); 1827 for(int i = 0; i < mInetLog.size(); i++) { 1828 pw.println(mInetLog.get(i)); 1829 } 1830 pw.decreaseIndent(); 1831 } 1832 1833 if (argsContain(args, "--short") == false) { 1834 pw.println(); 1835 synchronized (mValidationLogs) { 1836 pw.println("mValidationLogs (most recent first):"); 1837 for (Pair<Network,ReadOnlyLocalLog> p : mValidationLogs) { 1838 pw.println(p.first); 1839 pw.increaseIndent(); 1840 p.second.dump(fd, pw, args); 1841 pw.decreaseIndent(); 1842 } 1843 } 1844 } 1845 } 1846 1847 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1848 if (nai.network == null) return false; 1849 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1850 if (officialNai != null && officialNai.equals(nai)) return true; 1851 if (officialNai != null || VDBG) { 1852 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1853 " - " + nai); 1854 } 1855 return false; 1856 } 1857 1858 private boolean isRequest(NetworkRequest request) { 1859 return mNetworkRequests.get(request).isRequest; 1860 } 1861 1862 // must be stateless - things change under us. 1863 private class NetworkStateTrackerHandler extends Handler { 1864 public NetworkStateTrackerHandler(Looper looper) { 1865 super(looper); 1866 } 1867 1868 @Override 1869 public void handleMessage(Message msg) { 1870 NetworkInfo info; 1871 switch (msg.what) { 1872 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1873 handleAsyncChannelHalfConnect(msg); 1874 break; 1875 } 1876 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1877 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1878 if (nai != null) nai.asyncChannel.disconnect(); 1879 break; 1880 } 1881 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1882 handleAsyncChannelDisconnected(msg); 1883 break; 1884 } 1885 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1886 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1887 if (nai == null) { 1888 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1889 } else { 1890 final NetworkCapabilities networkCapabilities = 1891 (NetworkCapabilities)msg.obj; 1892 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL) || 1893 networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 1894 Slog.wtf(TAG, "BUG: " + nai + " has stateful capability."); 1895 } 1896 updateCapabilities(nai, networkCapabilities); 1897 } 1898 break; 1899 } 1900 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1901 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1902 if (nai == null) { 1903 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1904 } else { 1905 if (VDBG) { 1906 log("Update of LinkProperties for " + nai.name() + 1907 "; created=" + nai.created); 1908 } 1909 LinkProperties oldLp = nai.linkProperties; 1910 synchronized (nai) { 1911 nai.linkProperties = (LinkProperties)msg.obj; 1912 } 1913 if (nai.created) updateLinkProperties(nai, oldLp); 1914 } 1915 break; 1916 } 1917 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1918 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1919 if (nai == null) { 1920 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1921 break; 1922 } 1923 info = (NetworkInfo) msg.obj; 1924 updateNetworkInfo(nai, info); 1925 break; 1926 } 1927 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1928 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1929 if (nai == null) { 1930 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1931 break; 1932 } 1933 Integer score = (Integer) msg.obj; 1934 if (score != null) updateNetworkScore(nai, score.intValue()); 1935 break; 1936 } 1937 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1938 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1939 if (nai == null) { 1940 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1941 break; 1942 } 1943 try { 1944 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1945 } catch (Exception e) { 1946 // Never crash! 1947 loge("Exception in addVpnUidRanges: " + e); 1948 } 1949 break; 1950 } 1951 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1952 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1953 if (nai == null) { 1954 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1955 break; 1956 } 1957 try { 1958 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1959 } catch (Exception e) { 1960 // Never crash! 1961 loge("Exception in removeVpnUidRanges: " + e); 1962 } 1963 break; 1964 } 1965 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1966 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1967 if (nai == null) { 1968 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1969 break; 1970 } 1971 if (nai.created && !nai.networkMisc.explicitlySelected) { 1972 loge("ERROR: created network explicitly selected."); 1973 } 1974 nai.networkMisc.explicitlySelected = true; 1975 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 1976 break; 1977 } 1978 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1979 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1980 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_TESTED")) { 1981 final boolean valid = 1982 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1983 if (DBG) log(nai.name() + " validation " + (valid ? " passed" : "failed")); 1984 if (valid != nai.lastValidated) { 1985 final int oldScore = nai.getCurrentScore(); 1986 nai.lastValidated = valid; 1987 nai.everValidated |= valid; 1988 updateCapabilities(nai, nai.networkCapabilities); 1989 // If score has changed, rebroadcast to NetworkFactories. b/17726566 1990 if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); 1991 } 1992 updateInetCondition(nai); 1993 // Let the NetworkAgent know the state of its network 1994 nai.asyncChannel.sendMessage( 1995 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 1996 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 1997 0, null); 1998 } 1999 break; 2000 } 2001 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2002 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2003 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 2004 handleLingerComplete(nai); 2005 } 2006 break; 2007 } 2008 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2009 final int netId = msg.arg2; 2010 final boolean visible = (msg.arg1 != 0); 2011 final NetworkAgentInfo nai; 2012 synchronized (mNetworkForNetId) { 2013 nai = mNetworkForNetId.get(netId); 2014 } 2015 // If captive portal status has changed, update capabilities. 2016 if (nai != null && (visible != nai.lastCaptivePortalDetected)) { 2017 nai.lastCaptivePortalDetected = visible; 2018 nai.everCaptivePortalDetected |= visible; 2019 updateCapabilities(nai, nai.networkCapabilities); 2020 } 2021 if (!visible) { 2022 setProvNotificationVisibleIntent(false, netId, null, 0, null, null, false); 2023 } else { 2024 if (nai == null) { 2025 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2026 break; 2027 } 2028 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2029 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), 2030 (PendingIntent)msg.obj, nai.networkMisc.explicitlySelected); 2031 } 2032 break; 2033 } 2034 } 2035 } 2036 } 2037 2038 private void linger(NetworkAgentInfo nai) { 2039 nai.lingering = true; 2040 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 2041 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 2042 } 2043 2044 // Cancel any lingering so the linger timeout doesn't teardown a network. 2045 // This should be called when a network begins satisfying a NetworkRequest. 2046 // Note: depending on what state the NetworkMonitor is in (e.g., 2047 // if it's awaiting captive portal login, or if validation failed), this 2048 // may trigger a re-evaluation of the network. 2049 private void unlinger(NetworkAgentInfo nai) { 2050 nai.lingering = false; 2051 if (VDBG) log("Canceling linger of " + nai.name()); 2052 // If network has never been validated, it cannot have been lingered, so don't bother 2053 // needlessly triggering a re-evaluation. 2054 if (!nai.everValidated) return; 2055 nai.networkLingered.clear(); 2056 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2057 } 2058 2059 private void handleAsyncChannelHalfConnect(Message msg) { 2060 AsyncChannel ac = (AsyncChannel) msg.obj; 2061 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2062 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2063 if (VDBG) log("NetworkFactory connected"); 2064 // A network factory has connected. Send it all current NetworkRequests. 2065 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2066 if (nri.isRequest == false) continue; 2067 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2068 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2069 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2070 } 2071 } else { 2072 loge("Error connecting NetworkFactory"); 2073 mNetworkFactoryInfos.remove(msg.obj); 2074 } 2075 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2076 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2077 if (VDBG) log("NetworkAgent connected"); 2078 // A network agent has requested a connection. Establish the connection. 2079 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2080 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2081 } else { 2082 loge("Error connecting NetworkAgent"); 2083 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2084 if (nai != null) { 2085 final boolean wasDefault = isDefaultNetwork(nai); 2086 synchronized (mNetworkForNetId) { 2087 mNetworkForNetId.remove(nai.network.netId); 2088 mNetIdInUse.delete(nai.network.netId); 2089 } 2090 // Just in case. 2091 mLegacyTypeTracker.remove(nai, wasDefault); 2092 } 2093 } 2094 } 2095 } 2096 2097 private void handleAsyncChannelDisconnected(Message msg) { 2098 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2099 if (nai != null) { 2100 if (DBG) { 2101 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2102 } 2103 // A network agent has disconnected. 2104 // TODO - if we move the logic to the network agent (have them disconnect 2105 // because they lost all their requests or because their score isn't good) 2106 // then they would disconnect organically, report their new state and then 2107 // disconnect the channel. 2108 if (nai.networkInfo.isConnected()) { 2109 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2110 null, null); 2111 } 2112 final boolean wasDefault = isDefaultNetwork(nai); 2113 if (wasDefault) { 2114 mDefaultInetConditionPublished = 0; 2115 } 2116 notifyIfacesChanged(); 2117 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2118 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2119 mNetworkAgentInfos.remove(msg.replyTo); 2120 updateClat(null, nai.linkProperties, nai); 2121 synchronized (mNetworkForNetId) { 2122 // Remove the NetworkAgent, but don't mark the netId as 2123 // available until we've told netd to delete it below. 2124 mNetworkForNetId.remove(nai.network.netId); 2125 } 2126 // Remove all previously satisfied requests. 2127 for (int i = 0; i < nai.networkRequests.size(); i++) { 2128 NetworkRequest request = nai.networkRequests.valueAt(i); 2129 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2130 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2131 mNetworkForRequestId.remove(request.requestId); 2132 sendUpdatedScoreToFactories(request, 0); 2133 } 2134 } 2135 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2136 removeDataActivityTracking(nai); 2137 notifyLockdownVpn(nai); 2138 requestNetworkTransitionWakelock(nai.name()); 2139 } 2140 mLegacyTypeTracker.remove(nai, wasDefault); 2141 rematchAllNetworksAndRequests(null, 0); 2142 if (nai.created) { 2143 // Tell netd to clean up the configuration for this network 2144 // (routing rules, DNS, etc). 2145 // This may be slow as it requires a lot of netd shelling out to ip and 2146 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2147 // after we've rematched networks with requests which should make a potential 2148 // fallback network the default or requested a new network from the 2149 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2150 // long time. 2151 try { 2152 mNetd.removeNetwork(nai.network.netId); 2153 } catch (Exception e) { 2154 loge("Exception removing network: " + e); 2155 } 2156 } 2157 synchronized (mNetworkForNetId) { 2158 mNetIdInUse.delete(nai.network.netId); 2159 } 2160 } else { 2161 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2162 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2163 } 2164 } 2165 2166 // If this method proves to be too slow then we can maintain a separate 2167 // pendingIntent => NetworkRequestInfo map. 2168 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2169 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2170 Intent intent = pendingIntent.getIntent(); 2171 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2172 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2173 if (existingPendingIntent != null && 2174 existingPendingIntent.getIntent().filterEquals(intent)) { 2175 return entry.getValue(); 2176 } 2177 } 2178 return null; 2179 } 2180 2181 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2182 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2183 2184 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2185 if (existingRequest != null) { // remove the existing request. 2186 if (DBG) log("Replacing " + existingRequest.request + " with " 2187 + nri.request + " because their intents matched."); 2188 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2189 } 2190 handleRegisterNetworkRequest(nri); 2191 } 2192 2193 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2194 mNetworkRequests.put(nri.request, nri); 2195 rematchAllNetworksAndRequests(null, 0); 2196 if (nri.isRequest && mNetworkForRequestId.get(nri.request.requestId) == null) { 2197 sendUpdatedScoreToFactories(nri.request, 0); 2198 } 2199 } 2200 2201 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2202 int callingUid) { 2203 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2204 if (nri != null) { 2205 handleReleaseNetworkRequest(nri.request, callingUid); 2206 } 2207 } 2208 2209 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2210 // For validated Networks this is simply whether it is satsifying any NetworkRequests. 2211 // For unvalidated Networks this is whether it is satsifying any NetworkRequests or 2212 // were it to become validated, would it have a chance of satisfying any NetworkRequests. 2213 private boolean unneeded(NetworkAgentInfo nai) { 2214 if (!nai.created || nai.isVPN() || nai.lingering) return false; 2215 boolean unneeded = true; 2216 if (nai.everValidated) { 2217 for (int i = 0; i < nai.networkRequests.size() && unneeded; i++) { 2218 final NetworkRequest nr = nai.networkRequests.valueAt(i); 2219 try { 2220 if (isRequest(nr)) unneeded = false; 2221 } catch (Exception e) { 2222 loge("Request " + nr + " not found in mNetworkRequests."); 2223 loge(" it came from request list of " + nai.name()); 2224 } 2225 } 2226 } else { 2227 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2228 // If this Network is already the highest scoring Network for a request, or if 2229 // there is hope for it to become one if it validated, then it is needed. 2230 if (nri.isRequest && nai.satisfies(nri.request) && 2231 (nai.networkRequests.get(nri.request.requestId) != null || 2232 // Note that this catches two important cases: 2233 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2234 // is currently satisfying the request. This is desirable when 2235 // cellular ends up validating but WiFi does not. 2236 // 2. Unvalidated WiFi will not be reaped when validated cellular 2237 // is currently satsifying the request. This is desirable when 2238 // WiFi ends up validating and out scoring cellular. 2239 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2240 nai.getCurrentScoreAsValidated())) { 2241 unneeded = false; 2242 break; 2243 } 2244 } 2245 } 2246 return unneeded; 2247 } 2248 2249 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2250 NetworkRequestInfo nri = mNetworkRequests.get(request); 2251 if (nri != null) { 2252 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2253 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2254 return; 2255 } 2256 if (DBG) log("releasing NetworkRequest " + request); 2257 nri.unlinkDeathRecipient(); 2258 mNetworkRequests.remove(request); 2259 if (nri.isRequest) { 2260 // Find all networks that are satisfying this request and remove the request 2261 // from their request lists. 2262 // TODO - it's my understanding that for a request there is only a single 2263 // network satisfying it, so this loop is wasteful 2264 boolean wasKept = false; 2265 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2266 if (nai.networkRequests.get(nri.request.requestId) != null) { 2267 nai.networkRequests.remove(nri.request.requestId); 2268 if (DBG) { 2269 log(" Removing from current network " + nai.name() + 2270 ", leaving " + nai.networkRequests.size() + 2271 " requests."); 2272 } 2273 if (unneeded(nai)) { 2274 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2275 teardownUnneededNetwork(nai); 2276 } else { 2277 // suspect there should only be one pass through here 2278 // but if any were kept do the check below 2279 wasKept |= true; 2280 } 2281 } 2282 } 2283 2284 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2285 if (nai != null) { 2286 mNetworkForRequestId.remove(nri.request.requestId); 2287 } 2288 // Maintain the illusion. When this request arrived, we might have pretended 2289 // that a network connected to serve it, even though the network was already 2290 // connected. Now that this request has gone away, we might have to pretend 2291 // that the network disconnected. LegacyTypeTracker will generate that 2292 // phantom disconnect for this type. 2293 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2294 boolean doRemove = true; 2295 if (wasKept) { 2296 // check if any of the remaining requests for this network are for the 2297 // same legacy type - if so, don't remove the nai 2298 for (int i = 0; i < nai.networkRequests.size(); i++) { 2299 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2300 if (otherRequest.legacyType == nri.request.legacyType && 2301 isRequest(otherRequest)) { 2302 if (DBG) log(" still have other legacy request - leaving"); 2303 doRemove = false; 2304 } 2305 } 2306 } 2307 2308 if (doRemove) { 2309 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2310 } 2311 } 2312 2313 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2314 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2315 nri.request); 2316 } 2317 } else { 2318 // listens don't have a singular affectedNetwork. Check all networks to see 2319 // if this listen request applies and remove it. 2320 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2321 nai.networkRequests.remove(nri.request.requestId); 2322 } 2323 } 2324 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2325 } 2326 } 2327 2328 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2329 enforceConnectivityInternalPermission(); 2330 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2331 accept ? 1 : 0, always ? 1: 0, network)); 2332 } 2333 2334 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2335 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2336 " accept=" + accept + " always=" + always); 2337 2338 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2339 if (nai == null) { 2340 // Nothing to do. 2341 return; 2342 } 2343 2344 if (nai.everValidated) { 2345 // The network validated while the dialog box was up. Take no action. 2346 return; 2347 } 2348 2349 if (!nai.networkMisc.explicitlySelected) { 2350 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2351 } 2352 2353 if (accept != nai.networkMisc.acceptUnvalidated) { 2354 int oldScore = nai.getCurrentScore(); 2355 nai.networkMisc.acceptUnvalidated = accept; 2356 rematchAllNetworksAndRequests(nai, oldScore); 2357 sendUpdatedScoreToFactories(nai); 2358 } 2359 2360 if (always) { 2361 nai.asyncChannel.sendMessage( 2362 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2363 } 2364 2365 if (!accept) { 2366 // Tell the NetworkAgent that the network does not have Internet access (because that's 2367 // what we just told the user). This will hint to Wi-Fi not to autojoin this network in 2368 // the future. We do this now because NetworkMonitor might not yet have finished 2369 // validating and thus we might not yet have received an EVENT_NETWORK_TESTED. 2370 nai.asyncChannel.sendMessage(NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2371 NetworkAgent.INVALID_NETWORK, 0, null); 2372 // TODO: Tear the network down once we have determined how to tell WifiStateMachine not 2373 // to reconnect to it immediately. http://b/20739299 2374 } 2375 2376 } 2377 2378 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2379 if (DBG) log("scheduleUnvalidatedPrompt " + nai.network); 2380 mHandler.sendMessageDelayed( 2381 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2382 PROMPT_UNVALIDATED_DELAY_MS); 2383 } 2384 2385 private void handlePromptUnvalidated(Network network) { 2386 if (DBG) log("handlePromptUnvalidated " + network); 2387 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2388 2389 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2390 // we haven't already been told to switch to it regardless of whether it validated or not. 2391 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2392 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2393 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2394 return; 2395 } 2396 2397 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2398 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2399 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2400 intent.setClassName("com.android.settings", 2401 "com.android.settings.wifi.WifiNoInternetDialog"); 2402 2403 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2404 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2405 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2406 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent, true); 2407 } 2408 2409 private class InternalHandler extends Handler { 2410 public InternalHandler(Looper looper) { 2411 super(looper); 2412 } 2413 2414 @Override 2415 public void handleMessage(Message msg) { 2416 switch (msg.what) { 2417 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2418 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2419 String causedBy = null; 2420 synchronized (ConnectivityService.this) { 2421 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2422 mNetTransitionWakeLock.isHeld()) { 2423 mNetTransitionWakeLock.release(); 2424 causedBy = mNetTransitionWakeLockCausedBy; 2425 } else { 2426 break; 2427 } 2428 } 2429 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2430 log("Failed to find a new network - expiring NetTransition Wakelock"); 2431 } else { 2432 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2433 " cleared because we found a replacement network"); 2434 } 2435 break; 2436 } 2437 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2438 handleDeprecatedGlobalHttpProxy(); 2439 break; 2440 } 2441 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2442 Intent intent = (Intent)msg.obj; 2443 sendStickyBroadcast(intent); 2444 break; 2445 } 2446 case EVENT_PROXY_HAS_CHANGED: { 2447 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2448 break; 2449 } 2450 case EVENT_REGISTER_NETWORK_FACTORY: { 2451 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2452 break; 2453 } 2454 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2455 handleUnregisterNetworkFactory((Messenger)msg.obj); 2456 break; 2457 } 2458 case EVENT_REGISTER_NETWORK_AGENT: { 2459 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2460 break; 2461 } 2462 case EVENT_REGISTER_NETWORK_REQUEST: 2463 case EVENT_REGISTER_NETWORK_LISTENER: { 2464 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2465 break; 2466 } 2467 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2468 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2469 handleRegisterNetworkRequestWithIntent(msg); 2470 break; 2471 } 2472 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2473 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2474 break; 2475 } 2476 case EVENT_RELEASE_NETWORK_REQUEST: { 2477 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2478 break; 2479 } 2480 case EVENT_SET_ACCEPT_UNVALIDATED: { 2481 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2482 break; 2483 } 2484 case EVENT_PROMPT_UNVALIDATED: { 2485 handlePromptUnvalidated((Network) msg.obj); 2486 break; 2487 } 2488 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2489 handleMobileDataAlwaysOn(); 2490 break; 2491 } 2492 case EVENT_SYSTEM_READY: { 2493 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2494 nai.networkMonitor.systemReady = true; 2495 } 2496 break; 2497 } 2498 } 2499 } 2500 } 2501 2502 // javadoc from interface 2503 public int tether(String iface) { 2504 ConnectivityManager.enforceTetherChangePermission(mContext); 2505 if (isTetheringSupported()) { 2506 return mTethering.tether(iface); 2507 } else { 2508 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2509 } 2510 } 2511 2512 // javadoc from interface 2513 public int untether(String iface) { 2514 ConnectivityManager.enforceTetherChangePermission(mContext); 2515 2516 if (isTetheringSupported()) { 2517 return mTethering.untether(iface); 2518 } else { 2519 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2520 } 2521 } 2522 2523 // javadoc from interface 2524 public int getLastTetherError(String iface) { 2525 enforceTetherAccessPermission(); 2526 2527 if (isTetheringSupported()) { 2528 return mTethering.getLastTetherError(iface); 2529 } else { 2530 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2531 } 2532 } 2533 2534 // TODO - proper iface API for selection by property, inspection, etc 2535 public String[] getTetherableUsbRegexs() { 2536 enforceTetherAccessPermission(); 2537 if (isTetheringSupported()) { 2538 return mTethering.getTetherableUsbRegexs(); 2539 } else { 2540 return new String[0]; 2541 } 2542 } 2543 2544 public String[] getTetherableWifiRegexs() { 2545 enforceTetherAccessPermission(); 2546 if (isTetheringSupported()) { 2547 return mTethering.getTetherableWifiRegexs(); 2548 } else { 2549 return new String[0]; 2550 } 2551 } 2552 2553 public String[] getTetherableBluetoothRegexs() { 2554 enforceTetherAccessPermission(); 2555 if (isTetheringSupported()) { 2556 return mTethering.getTetherableBluetoothRegexs(); 2557 } else { 2558 return new String[0]; 2559 } 2560 } 2561 2562 public int setUsbTethering(boolean enable) { 2563 ConnectivityManager.enforceTetherChangePermission(mContext); 2564 if (isTetheringSupported()) { 2565 return mTethering.setUsbTethering(enable); 2566 } else { 2567 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2568 } 2569 } 2570 2571 // TODO - move iface listing, queries, etc to new module 2572 // javadoc from interface 2573 public String[] getTetherableIfaces() { 2574 enforceTetherAccessPermission(); 2575 return mTethering.getTetherableIfaces(); 2576 } 2577 2578 public String[] getTetheredIfaces() { 2579 enforceTetherAccessPermission(); 2580 return mTethering.getTetheredIfaces(); 2581 } 2582 2583 public String[] getTetheringErroredIfaces() { 2584 enforceTetherAccessPermission(); 2585 return mTethering.getErroredIfaces(); 2586 } 2587 2588 public String[] getTetheredDhcpRanges() { 2589 enforceConnectivityInternalPermission(); 2590 return mTethering.getTetheredDhcpRanges(); 2591 } 2592 2593 // if ro.tether.denied = true we default to no tethering 2594 // gservices could set the secure setting to 1 though to enable it on a build where it 2595 // had previously been turned off. 2596 public boolean isTetheringSupported() { 2597 enforceTetherAccessPermission(); 2598 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2599 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2600 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2601 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2602 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2603 mTethering.getTetherableWifiRegexs().length != 0 || 2604 mTethering.getTetherableBluetoothRegexs().length != 0) && 2605 mTethering.getUpstreamIfaceTypes().length != 0); 2606 } 2607 2608 // Called when we lose the default network and have no replacement yet. 2609 // This will automatically be cleared after X seconds or a new default network 2610 // becomes CONNECTED, whichever happens first. The timer is started by the 2611 // first caller and not restarted by subsequent callers. 2612 private void requestNetworkTransitionWakelock(String forWhom) { 2613 int serialNum = 0; 2614 synchronized (this) { 2615 if (mNetTransitionWakeLock.isHeld()) return; 2616 serialNum = ++mNetTransitionWakeLockSerialNumber; 2617 mNetTransitionWakeLock.acquire(); 2618 mNetTransitionWakeLockCausedBy = forWhom; 2619 } 2620 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2621 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2622 mNetTransitionWakeLockTimeout); 2623 return; 2624 } 2625 2626 // 100 percent is full good, 0 is full bad. 2627 public void reportInetCondition(int networkType, int percentage) { 2628 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2629 if (nai == null) return; 2630 reportNetworkConnectivity(nai.network, percentage > 50); 2631 } 2632 2633 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2634 enforceAccessPermission(); 2635 enforceInternetPermission(); 2636 2637 NetworkAgentInfo nai; 2638 if (network == null) { 2639 nai = getDefaultNetwork(); 2640 } else { 2641 nai = getNetworkAgentInfoForNetwork(network); 2642 } 2643 if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || 2644 nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { 2645 return; 2646 } 2647 // Revalidate if the app report does not match our current validated state. 2648 if (hasConnectivity == nai.lastValidated) return; 2649 final int uid = Binder.getCallingUid(); 2650 if (DBG) { 2651 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2652 ") by " + uid); 2653 } 2654 synchronized (nai) { 2655 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2656 // which isn't meant to work on uncreated networks. 2657 if (!nai.created) return; 2658 2659 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2660 2661 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2662 } 2663 } 2664 2665 public void captivePortalAppResponse(Network network, int response, String actionToken) { 2666 if (response == ConnectivityManager.CAPTIVE_PORTAL_APP_RETURN_WANTED_AS_IS) { 2667 enforceConnectivityInternalPermission(); 2668 } 2669 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2670 if (nai == null) return; 2671 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_CAPTIVE_PORTAL_APP_FINISHED, response, 0, 2672 actionToken); 2673 } 2674 2675 private ProxyInfo getDefaultProxy() { 2676 // this information is already available as a world read/writable jvm property 2677 // so this API change wouldn't have a benifit. It also breaks the passing 2678 // of proxy info to all the JVMs. 2679 // enforceAccessPermission(); 2680 synchronized (mProxyLock) { 2681 ProxyInfo ret = mGlobalProxy; 2682 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2683 return ret; 2684 } 2685 } 2686 2687 public ProxyInfo getProxyForNetwork(Network network) { 2688 if (network == null) return getDefaultProxy(); 2689 final ProxyInfo globalProxy = getGlobalProxy(); 2690 if (globalProxy != null) return globalProxy; 2691 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2692 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2693 // caller may not have. 2694 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2695 if (nai == null) return null; 2696 synchronized (nai) { 2697 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2698 if (proxyInfo == null) return null; 2699 return new ProxyInfo(proxyInfo); 2700 } 2701 } 2702 2703 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2704 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2705 // proxy is null then there is no proxy in place). 2706 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2707 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2708 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2709 proxy = null; 2710 } 2711 return proxy; 2712 } 2713 2714 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2715 // better for determining if a new proxy broadcast is necessary: 2716 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2717 // avoid unnecessary broadcasts. 2718 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2719 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2720 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2721 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2722 // all set. 2723 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2724 a = canonicalizeProxyInfo(a); 2725 b = canonicalizeProxyInfo(b); 2726 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2727 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2728 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2729 } 2730 2731 public void setGlobalProxy(ProxyInfo proxyProperties) { 2732 enforceConnectivityInternalPermission(); 2733 2734 synchronized (mProxyLock) { 2735 if (proxyProperties == mGlobalProxy) return; 2736 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2737 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2738 2739 String host = ""; 2740 int port = 0; 2741 String exclList = ""; 2742 String pacFileUrl = ""; 2743 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2744 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2745 if (!proxyProperties.isValid()) { 2746 if (DBG) 2747 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2748 return; 2749 } 2750 mGlobalProxy = new ProxyInfo(proxyProperties); 2751 host = mGlobalProxy.getHost(); 2752 port = mGlobalProxy.getPort(); 2753 exclList = mGlobalProxy.getExclusionListAsString(); 2754 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2755 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2756 } 2757 } else { 2758 mGlobalProxy = null; 2759 } 2760 ContentResolver res = mContext.getContentResolver(); 2761 final long token = Binder.clearCallingIdentity(); 2762 try { 2763 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2764 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2765 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2766 exclList); 2767 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2768 } finally { 2769 Binder.restoreCallingIdentity(token); 2770 } 2771 2772 if (mGlobalProxy == null) { 2773 proxyProperties = mDefaultProxy; 2774 } 2775 sendProxyBroadcast(proxyProperties); 2776 } 2777 } 2778 2779 private void loadGlobalProxy() { 2780 ContentResolver res = mContext.getContentResolver(); 2781 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2782 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2783 String exclList = Settings.Global.getString(res, 2784 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2785 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2786 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2787 ProxyInfo proxyProperties; 2788 if (!TextUtils.isEmpty(pacFileUrl)) { 2789 proxyProperties = new ProxyInfo(pacFileUrl); 2790 } else { 2791 proxyProperties = new ProxyInfo(host, port, exclList); 2792 } 2793 if (!proxyProperties.isValid()) { 2794 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2795 return; 2796 } 2797 2798 synchronized (mProxyLock) { 2799 mGlobalProxy = proxyProperties; 2800 } 2801 } 2802 } 2803 2804 public ProxyInfo getGlobalProxy() { 2805 // this information is already available as a world read/writable jvm property 2806 // so this API change wouldn't have a benifit. It also breaks the passing 2807 // of proxy info to all the JVMs. 2808 // enforceAccessPermission(); 2809 synchronized (mProxyLock) { 2810 return mGlobalProxy; 2811 } 2812 } 2813 2814 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2815 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2816 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2817 proxy = null; 2818 } 2819 synchronized (mProxyLock) { 2820 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2821 if (mDefaultProxy == proxy) return; // catches repeated nulls 2822 if (proxy != null && !proxy.isValid()) { 2823 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2824 return; 2825 } 2826 2827 // This call could be coming from the PacManager, containing the port of the local 2828 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2829 // global (to get the correct local port), and send a broadcast. 2830 // TODO: Switch PacManager to have its own message to send back rather than 2831 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2832 if ((mGlobalProxy != null) && (proxy != null) 2833 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2834 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2835 mGlobalProxy = proxy; 2836 sendProxyBroadcast(mGlobalProxy); 2837 return; 2838 } 2839 mDefaultProxy = proxy; 2840 2841 if (mGlobalProxy != null) return; 2842 if (!mDefaultProxyDisabled) { 2843 sendProxyBroadcast(proxy); 2844 } 2845 } 2846 } 2847 2848 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2849 // This method gets called when any network changes proxy, but the broadcast only ever contains 2850 // the default proxy (even if it hasn't changed). 2851 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2852 // world where an app might be bound to a non-default network. 2853 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2854 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2855 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2856 2857 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2858 sendProxyBroadcast(getDefaultProxy()); 2859 } 2860 } 2861 2862 private void handleDeprecatedGlobalHttpProxy() { 2863 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2864 Settings.Global.HTTP_PROXY); 2865 if (!TextUtils.isEmpty(proxy)) { 2866 String data[] = proxy.split(":"); 2867 if (data.length == 0) { 2868 return; 2869 } 2870 2871 String proxyHost = data[0]; 2872 int proxyPort = 8080; 2873 if (data.length > 1) { 2874 try { 2875 proxyPort = Integer.parseInt(data[1]); 2876 } catch (NumberFormatException e) { 2877 return; 2878 } 2879 } 2880 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2881 setGlobalProxy(p); 2882 } 2883 } 2884 2885 private void sendProxyBroadcast(ProxyInfo proxy) { 2886 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2887 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2888 if (DBG) log("sending Proxy Broadcast for " + proxy); 2889 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2890 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2891 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2892 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2893 final long ident = Binder.clearCallingIdentity(); 2894 try { 2895 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2896 } finally { 2897 Binder.restoreCallingIdentity(ident); 2898 } 2899 } 2900 2901 private static class SettingsObserver extends ContentObserver { 2902 final private HashMap<Uri, Integer> mUriEventMap; 2903 final private Context mContext; 2904 final private Handler mHandler; 2905 2906 SettingsObserver(Context context, Handler handler) { 2907 super(null); 2908 mUriEventMap = new HashMap<Uri, Integer>(); 2909 mContext = context; 2910 mHandler = handler; 2911 } 2912 2913 void observe(Uri uri, int what) { 2914 mUriEventMap.put(uri, what); 2915 final ContentResolver resolver = mContext.getContentResolver(); 2916 resolver.registerContentObserver(uri, false, this); 2917 } 2918 2919 @Override 2920 public void onChange(boolean selfChange) { 2921 Slog.wtf(TAG, "Should never be reached."); 2922 } 2923 2924 @Override 2925 public void onChange(boolean selfChange, Uri uri) { 2926 final Integer what = mUriEventMap.get(uri); 2927 if (what != null) { 2928 mHandler.obtainMessage(what.intValue()).sendToTarget(); 2929 } else { 2930 loge("No matching event to send for URI=" + uri); 2931 } 2932 } 2933 } 2934 2935 private static void log(String s) { 2936 Slog.d(TAG, s); 2937 } 2938 2939 private static void loge(String s) { 2940 Slog.e(TAG, s); 2941 } 2942 2943 private static <T> T checkNotNull(T value, String message) { 2944 if (value == null) { 2945 throw new NullPointerException(message); 2946 } 2947 return value; 2948 } 2949 2950 /** 2951 * Prepare for a VPN application. 2952 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 2953 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 2954 * 2955 * @param oldPackage Package name of the application which currently controls VPN, which will 2956 * be replaced. If there is no such application, this should should either be 2957 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 2958 * @param newPackage Package name of the application which should gain control of VPN, or 2959 * {@code null} to disable. 2960 * @param userId User for whom to prepare the new VPN. 2961 * 2962 * @hide 2963 */ 2964 @Override 2965 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 2966 int userId) { 2967 enforceCrossUserPermission(userId); 2968 throwIfLockdownEnabled(); 2969 2970 synchronized(mVpns) { 2971 Vpn vpn = mVpns.get(userId); 2972 if (vpn != null) { 2973 return vpn.prepare(oldPackage, newPackage); 2974 } else { 2975 return false; 2976 } 2977 } 2978 } 2979 2980 /** 2981 * Set whether the VPN package has the ability to launch VPNs without user intervention. 2982 * This method is used by system-privileged apps. 2983 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 2984 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 2985 * 2986 * @param packageName The package for which authorization state should change. 2987 * @param userId User for whom {@code packageName} is installed. 2988 * @param authorized {@code true} if this app should be able to start a VPN connection without 2989 * explicit user approval, {@code false} if not. 2990 * 2991 * @hide 2992 */ 2993 @Override 2994 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 2995 enforceCrossUserPermission(userId); 2996 2997 synchronized(mVpns) { 2998 Vpn vpn = mVpns.get(userId); 2999 if (vpn != null) { 3000 vpn.setPackageAuthorization(packageName, authorized); 3001 } 3002 } 3003 } 3004 3005 /** 3006 * Configure a TUN interface and return its file descriptor. Parameters 3007 * are encoded and opaque to this class. This method is used by VpnBuilder 3008 * and not available in ConnectivityManager. Permissions are checked in 3009 * Vpn class. 3010 * @hide 3011 */ 3012 @Override 3013 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3014 throwIfLockdownEnabled(); 3015 int user = UserHandle.getUserId(Binder.getCallingUid()); 3016 synchronized(mVpns) { 3017 return mVpns.get(user).establish(config); 3018 } 3019 } 3020 3021 /** 3022 * Start legacy VPN, controlling native daemons as needed. Creates a 3023 * secondary thread to perform connection work, returning quickly. 3024 */ 3025 @Override 3026 public void startLegacyVpn(VpnProfile profile) { 3027 throwIfLockdownEnabled(); 3028 final LinkProperties egress = getActiveLinkProperties(); 3029 if (egress == null) { 3030 throw new IllegalStateException("Missing active network connection"); 3031 } 3032 int user = UserHandle.getUserId(Binder.getCallingUid()); 3033 synchronized(mVpns) { 3034 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3035 } 3036 } 3037 3038 /** 3039 * Return the information of the ongoing legacy VPN. This method is used 3040 * by VpnSettings and not available in ConnectivityManager. Permissions 3041 * are checked in Vpn class. 3042 */ 3043 @Override 3044 public LegacyVpnInfo getLegacyVpnInfo() { 3045 throwIfLockdownEnabled(); 3046 int user = UserHandle.getUserId(Binder.getCallingUid()); 3047 synchronized(mVpns) { 3048 return mVpns.get(user).getLegacyVpnInfo(); 3049 } 3050 } 3051 3052 /** 3053 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3054 * and not available in ConnectivityManager. 3055 */ 3056 @Override 3057 public VpnInfo[] getAllVpnInfo() { 3058 enforceConnectivityInternalPermission(); 3059 if (mLockdownEnabled) { 3060 return new VpnInfo[0]; 3061 } 3062 3063 synchronized(mVpns) { 3064 List<VpnInfo> infoList = new ArrayList<>(); 3065 for (int i = 0; i < mVpns.size(); i++) { 3066 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3067 if (info != null) { 3068 infoList.add(info); 3069 } 3070 } 3071 return infoList.toArray(new VpnInfo[infoList.size()]); 3072 } 3073 } 3074 3075 /** 3076 * @return VPN information for accounting, or null if we can't retrieve all required 3077 * information, e.g primary underlying iface. 3078 */ 3079 @Nullable 3080 private VpnInfo createVpnInfo(Vpn vpn) { 3081 VpnInfo info = vpn.getVpnInfo(); 3082 if (info == null) { 3083 return null; 3084 } 3085 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3086 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3087 // the underlyingNetworks list. 3088 if (underlyingNetworks == null) { 3089 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3090 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3091 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3092 } 3093 } else if (underlyingNetworks.length > 0) { 3094 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3095 if (linkProperties != null) { 3096 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3097 } 3098 } 3099 return info.primaryUnderlyingIface == null ? null : info; 3100 } 3101 3102 /** 3103 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3104 * VpnDialogs and not available in ConnectivityManager. 3105 * Permissions are checked in Vpn class. 3106 * @hide 3107 */ 3108 @Override 3109 public VpnConfig getVpnConfig(int userId) { 3110 enforceCrossUserPermission(userId); 3111 synchronized(mVpns) { 3112 Vpn vpn = mVpns.get(userId); 3113 if (vpn != null) { 3114 return vpn.getVpnConfig(); 3115 } else { 3116 return null; 3117 } 3118 } 3119 } 3120 3121 @Override 3122 public boolean updateLockdownVpn() { 3123 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3124 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3125 return false; 3126 } 3127 3128 // Tear down existing lockdown if profile was removed 3129 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3130 if (mLockdownEnabled) { 3131 if (!mKeyStore.isUnlocked()) { 3132 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3133 return false; 3134 } 3135 3136 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3137 final VpnProfile profile = VpnProfile.decode( 3138 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3139 int user = UserHandle.getUserId(Binder.getCallingUid()); 3140 synchronized(mVpns) { 3141 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3142 profile)); 3143 } 3144 } else { 3145 setLockdownTracker(null); 3146 } 3147 3148 return true; 3149 } 3150 3151 /** 3152 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3153 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3154 */ 3155 private void setLockdownTracker(LockdownVpnTracker tracker) { 3156 // Shutdown any existing tracker 3157 final LockdownVpnTracker existing = mLockdownTracker; 3158 mLockdownTracker = null; 3159 if (existing != null) { 3160 existing.shutdown(); 3161 } 3162 3163 try { 3164 if (tracker != null) { 3165 mNetd.setFirewallEnabled(true); 3166 mNetd.setFirewallInterfaceRule("lo", true); 3167 mLockdownTracker = tracker; 3168 mLockdownTracker.init(); 3169 } else { 3170 mNetd.setFirewallEnabled(false); 3171 } 3172 } catch (RemoteException e) { 3173 // ignored; NMS lives inside system_server 3174 } 3175 } 3176 3177 private void throwIfLockdownEnabled() { 3178 if (mLockdownEnabled) { 3179 throw new IllegalStateException("Unavailable in lockdown mode"); 3180 } 3181 } 3182 3183 @Override 3184 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3185 // TODO: Remove? Any reason to trigger a provisioning check? 3186 return -1; 3187 } 3188 3189 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3190 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3191 3192 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3193 if (DBG) { 3194 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3195 + " action=" + action); 3196 } 3197 Intent intent = new Intent(action); 3198 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3199 // Concatenate the range of types onto the range of NetIDs. 3200 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3201 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3202 networkType, null, pendingIntent, false); 3203 } 3204 3205 /** 3206 * Show or hide network provisioning notifications. 3207 * 3208 * We use notifications for two purposes: to notify that a network requires sign in 3209 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3210 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3211 * particular network we can display the notification type that was most recently requested. 3212 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3213 * might first display NO_INTERNET, and then when the captive portal check completes, display 3214 * SIGN_IN. 3215 * 3216 * @param id an identifier that uniquely identifies this notification. This must match 3217 * between show and hide calls. We use the NetID value but for legacy callers 3218 * we concatenate the range of types with the range of NetIDs. 3219 */ 3220 private void setProvNotificationVisibleIntent(boolean visible, int id, 3221 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent, 3222 boolean highPriority) { 3223 if (DBG) { 3224 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3225 + " networkType=" + getNetworkTypeName(networkType) 3226 + " extraInfo=" + extraInfo + " highPriority=" + highPriority); 3227 } 3228 3229 Resources r = Resources.getSystem(); 3230 NotificationManager notificationManager = (NotificationManager) mContext 3231 .getSystemService(Context.NOTIFICATION_SERVICE); 3232 3233 if (visible) { 3234 CharSequence title; 3235 CharSequence details; 3236 int icon; 3237 if (notifyType == NotificationType.NO_INTERNET && 3238 networkType == ConnectivityManager.TYPE_WIFI) { 3239 title = r.getString(R.string.wifi_no_internet, 0); 3240 details = r.getString(R.string.wifi_no_internet_detailed); 3241 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3242 } else if (notifyType == NotificationType.SIGN_IN) { 3243 switch (networkType) { 3244 case ConnectivityManager.TYPE_WIFI: 3245 title = r.getString(R.string.wifi_available_sign_in, 0); 3246 details = r.getString(R.string.network_available_sign_in_detailed, 3247 extraInfo); 3248 icon = R.drawable.stat_notify_wifi_in_range; 3249 break; 3250 case ConnectivityManager.TYPE_MOBILE: 3251 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3252 title = r.getString(R.string.network_available_sign_in, 0); 3253 // TODO: Change this to pull from NetworkInfo once a printable 3254 // name has been added to it 3255 details = mTelephonyManager.getNetworkOperatorName(); 3256 icon = R.drawable.stat_notify_rssi_in_range; 3257 break; 3258 default: 3259 title = r.getString(R.string.network_available_sign_in, 0); 3260 details = r.getString(R.string.network_available_sign_in_detailed, 3261 extraInfo); 3262 icon = R.drawable.stat_notify_rssi_in_range; 3263 break; 3264 } 3265 } else { 3266 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3267 + getNetworkTypeName(networkType)); 3268 return; 3269 } 3270 3271 Notification notification = new Notification.Builder(mContext) 3272 .setWhen(0) 3273 .setSmallIcon(icon) 3274 .setAutoCancel(true) 3275 .setTicker(title) 3276 .setColor(mContext.getColor( 3277 com.android.internal.R.color.system_notification_accent_color)) 3278 .setContentTitle(title) 3279 .setContentText(details) 3280 .setContentIntent(intent) 3281 .setLocalOnly(true) 3282 .setPriority(highPriority ? 3283 Notification.PRIORITY_HIGH : 3284 Notification.PRIORITY_DEFAULT) 3285 .setDefaults(Notification.DEFAULT_ALL) 3286 .setOnlyAlertOnce(true) 3287 .build(); 3288 3289 try { 3290 notificationManager.notify(NOTIFICATION_ID, id, notification); 3291 } catch (NullPointerException npe) { 3292 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3293 npe.printStackTrace(); 3294 } 3295 } else { 3296 try { 3297 notificationManager.cancel(NOTIFICATION_ID, id); 3298 } catch (NullPointerException npe) { 3299 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3300 npe.printStackTrace(); 3301 } 3302 } 3303 } 3304 3305 /** Location to an updatable file listing carrier provisioning urls. 3306 * An example: 3307 * 3308 * <?xml version="1.0" encoding="utf-8"?> 3309 * <provisioningUrls> 3310 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3311 * </provisioningUrls> 3312 */ 3313 private static final String PROVISIONING_URL_PATH = 3314 "/data/misc/radio/provisioning_urls.xml"; 3315 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3316 3317 /** XML tag for root element. */ 3318 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3319 /** XML tag for individual url */ 3320 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3321 /** XML attribute for mcc */ 3322 private static final String ATTR_MCC = "mcc"; 3323 /** XML attribute for mnc */ 3324 private static final String ATTR_MNC = "mnc"; 3325 3326 private String getProvisioningUrlBaseFromFile() { 3327 FileReader fileReader = null; 3328 XmlPullParser parser = null; 3329 Configuration config = mContext.getResources().getConfiguration(); 3330 3331 try { 3332 fileReader = new FileReader(mProvisioningUrlFile); 3333 parser = Xml.newPullParser(); 3334 parser.setInput(fileReader); 3335 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3336 3337 while (true) { 3338 XmlUtils.nextElement(parser); 3339 3340 String element = parser.getName(); 3341 if (element == null) break; 3342 3343 if (element.equals(TAG_PROVISIONING_URL)) { 3344 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3345 try { 3346 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3347 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3348 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3349 parser.next(); 3350 if (parser.getEventType() == XmlPullParser.TEXT) { 3351 return parser.getText(); 3352 } 3353 } 3354 } 3355 } catch (NumberFormatException e) { 3356 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3357 } 3358 } 3359 } 3360 return null; 3361 } catch (FileNotFoundException e) { 3362 loge("Carrier Provisioning Urls file not found"); 3363 } catch (XmlPullParserException e) { 3364 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3365 } catch (IOException e) { 3366 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3367 } finally { 3368 if (fileReader != null) { 3369 try { 3370 fileReader.close(); 3371 } catch (IOException e) {} 3372 } 3373 } 3374 return null; 3375 } 3376 3377 @Override 3378 public String getMobileProvisioningUrl() { 3379 enforceConnectivityInternalPermission(); 3380 String url = getProvisioningUrlBaseFromFile(); 3381 if (TextUtils.isEmpty(url)) { 3382 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3383 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3384 } else { 3385 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3386 } 3387 // populate the iccid, imei and phone number in the provisioning url. 3388 if (!TextUtils.isEmpty(url)) { 3389 String phoneNumber = mTelephonyManager.getLine1Number(); 3390 if (TextUtils.isEmpty(phoneNumber)) { 3391 phoneNumber = "0000000000"; 3392 } 3393 url = String.format(url, 3394 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3395 mTelephonyManager.getDeviceId() /* IMEI */, 3396 phoneNumber /* Phone numer */); 3397 } 3398 3399 return url; 3400 } 3401 3402 @Override 3403 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3404 String action) { 3405 enforceConnectivityInternalPermission(); 3406 final long ident = Binder.clearCallingIdentity(); 3407 try { 3408 setProvNotificationVisible(visible, networkType, action); 3409 } finally { 3410 Binder.restoreCallingIdentity(ident); 3411 } 3412 } 3413 3414 @Override 3415 public void setAirplaneMode(boolean enable) { 3416 enforceConnectivityInternalPermission(); 3417 final long ident = Binder.clearCallingIdentity(); 3418 try { 3419 final ContentResolver cr = mContext.getContentResolver(); 3420 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3421 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3422 intent.putExtra("state", enable); 3423 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3424 } finally { 3425 Binder.restoreCallingIdentity(ident); 3426 } 3427 } 3428 3429 private void onUserStart(int userId) { 3430 synchronized(mVpns) { 3431 Vpn userVpn = mVpns.get(userId); 3432 if (userVpn != null) { 3433 loge("Starting user already has a VPN"); 3434 return; 3435 } 3436 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3437 mVpns.put(userId, userVpn); 3438 } 3439 } 3440 3441 private void onUserStop(int userId) { 3442 synchronized(mVpns) { 3443 Vpn userVpn = mVpns.get(userId); 3444 if (userVpn == null) { 3445 loge("Stopping user has no VPN"); 3446 return; 3447 } 3448 mVpns.delete(userId); 3449 } 3450 } 3451 3452 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3453 @Override 3454 public void onReceive(Context context, Intent intent) { 3455 final String action = intent.getAction(); 3456 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3457 if (userId == UserHandle.USER_NULL) return; 3458 3459 if (Intent.ACTION_USER_STARTING.equals(action)) { 3460 onUserStart(userId); 3461 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3462 onUserStop(userId); 3463 } 3464 } 3465 }; 3466 3467 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3468 new HashMap<Messenger, NetworkFactoryInfo>(); 3469 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3470 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3471 3472 private static class NetworkFactoryInfo { 3473 public final String name; 3474 public final Messenger messenger; 3475 public final AsyncChannel asyncChannel; 3476 3477 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3478 this.name = name; 3479 this.messenger = messenger; 3480 this.asyncChannel = asyncChannel; 3481 } 3482 } 3483 3484 /** 3485 * Tracks info about the requester. 3486 * Also used to notice when the calling process dies so we can self-expire 3487 */ 3488 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3489 static final boolean REQUEST = true; 3490 static final boolean LISTEN = false; 3491 3492 final NetworkRequest request; 3493 final PendingIntent mPendingIntent; 3494 boolean mPendingIntentSent; 3495 private final IBinder mBinder; 3496 final int mPid; 3497 final int mUid; 3498 final Messenger messenger; 3499 final boolean isRequest; 3500 3501 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3502 request = r; 3503 mPendingIntent = pi; 3504 messenger = null; 3505 mBinder = null; 3506 mPid = getCallingPid(); 3507 mUid = getCallingUid(); 3508 this.isRequest = isRequest; 3509 } 3510 3511 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3512 super(); 3513 messenger = m; 3514 request = r; 3515 mBinder = binder; 3516 mPid = getCallingPid(); 3517 mUid = getCallingUid(); 3518 this.isRequest = isRequest; 3519 mPendingIntent = null; 3520 3521 try { 3522 mBinder.linkToDeath(this, 0); 3523 } catch (RemoteException e) { 3524 binderDied(); 3525 } 3526 } 3527 3528 void unlinkDeathRecipient() { 3529 if (mBinder != null) { 3530 mBinder.unlinkToDeath(this, 0); 3531 } 3532 } 3533 3534 public void binderDied() { 3535 log("ConnectivityService NetworkRequestInfo binderDied(" + 3536 request + ", " + mBinder + ")"); 3537 releaseNetworkRequest(request); 3538 } 3539 3540 public String toString() { 3541 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3542 mPid + " for " + request + 3543 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3544 } 3545 } 3546 3547 private void ensureImmutableCapabilities(NetworkCapabilities networkCapabilities) { 3548 if (networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 3549 throw new IllegalArgumentException( 3550 "Cannot request network with NET_CAPABILITY_VALIDATED"); 3551 } 3552 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL)) { 3553 throw new IllegalArgumentException( 3554 "Cannot request network with NET_CAPABILITY_CAPTIVE_PORTAL"); 3555 } 3556 } 3557 3558 @Override 3559 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3560 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3561 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3562 enforceNetworkRequestPermissions(networkCapabilities); 3563 enforceMeteredApnPolicy(networkCapabilities); 3564 ensureImmutableCapabilities(networkCapabilities); 3565 3566 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3567 throw new IllegalArgumentException("Bad timeout specified"); 3568 } 3569 3570 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3571 nextNetworkRequestId()); 3572 if (DBG) log("requestNetwork for " + networkRequest); 3573 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3574 NetworkRequestInfo.REQUEST); 3575 3576 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3577 if (timeoutMs > 0) { 3578 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3579 nri), timeoutMs); 3580 } 3581 return networkRequest; 3582 } 3583 3584 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3585 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3586 enforceConnectivityInternalPermission(); 3587 } else { 3588 enforceChangePermission(); 3589 } 3590 } 3591 3592 @Override 3593 public boolean requestBandwidthUpdate(Network network) { 3594 enforceAccessPermission(); 3595 NetworkAgentInfo nai = null; 3596 if (network == null) { 3597 return false; 3598 } 3599 synchronized (mNetworkForNetId) { 3600 nai = mNetworkForNetId.get(network.netId); 3601 } 3602 if (nai != null) { 3603 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3604 return true; 3605 } 3606 return false; 3607 } 3608 3609 3610 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3611 // if UID is restricted, don't allow them to bring up metered APNs 3612 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3613 final int uidRules; 3614 final int uid = Binder.getCallingUid(); 3615 synchronized(mRulesLock) { 3616 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3617 } 3618 if ((uidRules & (RULE_REJECT_METERED | RULE_REJECT_ALL)) != 0) { 3619 // we could silently fail or we can filter the available nets to only give 3620 // them those they have access to. Chose the more useful 3621 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3622 } 3623 } 3624 } 3625 3626 @Override 3627 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3628 PendingIntent operation) { 3629 checkNotNull(operation, "PendingIntent cannot be null."); 3630 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3631 enforceNetworkRequestPermissions(networkCapabilities); 3632 enforceMeteredApnPolicy(networkCapabilities); 3633 ensureImmutableCapabilities(networkCapabilities); 3634 3635 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3636 nextNetworkRequestId()); 3637 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3638 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3639 NetworkRequestInfo.REQUEST); 3640 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3641 nri)); 3642 return networkRequest; 3643 } 3644 3645 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3646 mHandler.sendMessageDelayed( 3647 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3648 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3649 } 3650 3651 @Override 3652 public void releasePendingNetworkRequest(PendingIntent operation) { 3653 checkNotNull(operation, "PendingIntent cannot be null."); 3654 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3655 getCallingUid(), 0, operation)); 3656 } 3657 3658 // In order to implement the compatibility measure for pre-M apps that call 3659 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3660 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3661 // This ensures it has permission to do so. 3662 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3663 if (nc == null) { 3664 return false; 3665 } 3666 int[] transportTypes = nc.getTransportTypes(); 3667 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3668 return false; 3669 } 3670 try { 3671 mContext.enforceCallingOrSelfPermission( 3672 android.Manifest.permission.ACCESS_WIFI_STATE, 3673 "ConnectivityService"); 3674 } catch (SecurityException e) { 3675 return false; 3676 } 3677 return true; 3678 } 3679 3680 @Override 3681 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3682 Messenger messenger, IBinder binder) { 3683 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3684 enforceAccessPermission(); 3685 } 3686 3687 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3688 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3689 if (DBG) log("listenForNetwork for " + networkRequest); 3690 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3691 NetworkRequestInfo.LISTEN); 3692 3693 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3694 return networkRequest; 3695 } 3696 3697 @Override 3698 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3699 PendingIntent operation) { 3700 checkNotNull(operation, "PendingIntent cannot be null."); 3701 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3702 enforceAccessPermission(); 3703 } 3704 3705 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3706 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3707 if (DBG) log("pendingListenForNetwork for " + networkRequest + " to trigger " + operation); 3708 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3709 NetworkRequestInfo.LISTEN); 3710 3711 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3712 } 3713 3714 @Override 3715 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3716 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3717 0, networkRequest)); 3718 } 3719 3720 @Override 3721 public void registerNetworkFactory(Messenger messenger, String name) { 3722 enforceConnectivityInternalPermission(); 3723 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3724 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3725 } 3726 3727 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3728 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3729 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3730 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3731 } 3732 3733 @Override 3734 public void unregisterNetworkFactory(Messenger messenger) { 3735 enforceConnectivityInternalPermission(); 3736 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3737 } 3738 3739 private void handleUnregisterNetworkFactory(Messenger messenger) { 3740 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3741 if (nfi == null) { 3742 loge("Failed to find Messenger in unregisterNetworkFactory"); 3743 return; 3744 } 3745 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3746 } 3747 3748 /** 3749 * NetworkAgentInfo supporting a request by requestId. 3750 * These have already been vetted (their Capabilities satisfy the request) 3751 * and the are the highest scored network available. 3752 * the are keyed off the Requests requestId. 3753 */ 3754 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 3755 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3756 new SparseArray<NetworkAgentInfo>(); 3757 3758 // NOTE: Accessed on multiple threads, must be synchronized on itself. 3759 @GuardedBy("mNetworkForNetId") 3760 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3761 new SparseArray<NetworkAgentInfo>(); 3762 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 3763 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 3764 // there may not be a strict 1:1 correlation between the two. 3765 @GuardedBy("mNetworkForNetId") 3766 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 3767 3768 // NetworkAgentInfo keyed off its connecting messenger 3769 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3770 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 3771 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3772 new HashMap<Messenger, NetworkAgentInfo>(); 3773 3774 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3775 private final NetworkRequest mDefaultRequest; 3776 3777 // Request used to optionally keep mobile data active even when higher 3778 // priority networks like Wi-Fi are active. 3779 private final NetworkRequest mDefaultMobileDataRequest; 3780 3781 private NetworkAgentInfo getDefaultNetwork() { 3782 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3783 } 3784 3785 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3786 return nai == getDefaultNetwork(); 3787 } 3788 3789 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3790 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3791 int currentScore, NetworkMisc networkMisc) { 3792 enforceConnectivityInternalPermission(); 3793 3794 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3795 // satisfies mDefaultRequest. 3796 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3797 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 3798 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 3799 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest); 3800 synchronized (this) { 3801 nai.networkMonitor.systemReady = mSystemReady; 3802 } 3803 addValidationLogs(nai.networkMonitor.getValidationLogs(), nai.network); 3804 if (DBG) log("registerNetworkAgent " + nai); 3805 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3806 return nai.network.netId; 3807 } 3808 3809 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3810 if (VDBG) log("Got NetworkAgent Messenger"); 3811 mNetworkAgentInfos.put(na.messenger, na); 3812 synchronized (mNetworkForNetId) { 3813 mNetworkForNetId.put(na.network.netId, na); 3814 } 3815 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3816 NetworkInfo networkInfo = na.networkInfo; 3817 na.networkInfo = null; 3818 updateNetworkInfo(na, networkInfo); 3819 } 3820 3821 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3822 LinkProperties newLp = networkAgent.linkProperties; 3823 int netId = networkAgent.network.netId; 3824 3825 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3826 // we do anything else, make sure its LinkProperties are accurate. 3827 if (networkAgent.clatd != null) { 3828 networkAgent.clatd.fixupLinkProperties(oldLp); 3829 } 3830 3831 updateInterfaces(newLp, oldLp, netId); 3832 updateMtu(newLp, oldLp); 3833 // TODO - figure out what to do for clat 3834// for (LinkProperties lp : newLp.getStackedLinks()) { 3835// updateMtu(lp, null); 3836// } 3837 updateTcpBufferSizes(networkAgent); 3838 3839 // TODO: deprecate and remove mDefaultDns when we can do so safely. See http://b/18327075 3840 // In L, we used it only when the network had Internet access but provided no DNS servers. 3841 // For now, just disable it, and if disabling it doesn't break things, remove it. 3842 // final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3843 // NET_CAPABILITY_INTERNET); 3844 final boolean useDefaultDns = false; 3845 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3846 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3847 3848 updateClat(newLp, oldLp, networkAgent); 3849 if (isDefaultNetwork(networkAgent)) { 3850 handleApplyDefaultProxy(newLp.getHttpProxy()); 3851 } else { 3852 updateProxy(newLp, oldLp, networkAgent); 3853 } 3854 // TODO - move this check to cover the whole function 3855 if (!Objects.equals(newLp, oldLp)) { 3856 notifyIfacesChanged(); 3857 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3858 } 3859 } 3860 3861 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3862 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3863 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3864 3865 if (!wasRunningClat && shouldRunClat) { 3866 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3867 nai.clatd.start(); 3868 } else if (wasRunningClat && !shouldRunClat) { 3869 nai.clatd.stop(); 3870 } 3871 } 3872 3873 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3874 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3875 if (oldLp != null) { 3876 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3877 } else if (newLp != null) { 3878 interfaceDiff.added = newLp.getAllInterfaceNames(); 3879 } 3880 for (String iface : interfaceDiff.added) { 3881 try { 3882 if (DBG) log("Adding iface " + iface + " to network " + netId); 3883 mNetd.addInterfaceToNetwork(iface, netId); 3884 } catch (Exception e) { 3885 loge("Exception adding interface: " + e); 3886 } 3887 } 3888 for (String iface : interfaceDiff.removed) { 3889 try { 3890 if (DBG) log("Removing iface " + iface + " from network " + netId); 3891 mNetd.removeInterfaceFromNetwork(iface, netId); 3892 } catch (Exception e) { 3893 loge("Exception removing interface: " + e); 3894 } 3895 } 3896 } 3897 3898 /** 3899 * Have netd update routes from oldLp to newLp. 3900 * @return true if routes changed between oldLp and newLp 3901 */ 3902 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3903 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3904 if (oldLp != null) { 3905 routeDiff = oldLp.compareAllRoutes(newLp); 3906 } else if (newLp != null) { 3907 routeDiff.added = newLp.getAllRoutes(); 3908 } 3909 3910 // add routes before removing old in case it helps with continuous connectivity 3911 3912 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3913 for (RouteInfo route : routeDiff.added) { 3914 if (route.hasGateway()) continue; 3915 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3916 try { 3917 mNetd.addRoute(netId, route); 3918 } catch (Exception e) { 3919 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3920 loge("Exception in addRoute for non-gateway: " + e); 3921 } 3922 } 3923 } 3924 for (RouteInfo route : routeDiff.added) { 3925 if (route.hasGateway() == false) continue; 3926 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3927 try { 3928 mNetd.addRoute(netId, route); 3929 } catch (Exception e) { 3930 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3931 loge("Exception in addRoute for gateway: " + e); 3932 } 3933 } 3934 } 3935 3936 for (RouteInfo route : routeDiff.removed) { 3937 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3938 try { 3939 mNetd.removeRoute(netId, route); 3940 } catch (Exception e) { 3941 loge("Exception in removeRoute: " + e); 3942 } 3943 } 3944 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3945 } 3946 3947 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 3948 boolean flush, boolean useDefaultDns) { 3949 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 3950 Collection<InetAddress> dnses = newLp.getDnsServers(); 3951 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 3952 dnses = new ArrayList(); 3953 dnses.add(mDefaultDns); 3954 if (DBG) { 3955 loge("no dns provided for netId " + netId + ", so using defaults"); 3956 } 3957 } 3958 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 3959 try { 3960 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 3961 newLp.getDomains()); 3962 } catch (Exception e) { 3963 loge("Exception in setDnsServersForNetwork: " + e); 3964 } 3965 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 3966 if (defaultNai != null && defaultNai.network.netId == netId) { 3967 setDefaultDnsSystemProperties(dnses); 3968 } 3969 flushVmDnsCache(); 3970 } else if (flush) { 3971 try { 3972 mNetd.flushNetworkDnsCache(netId); 3973 } catch (Exception e) { 3974 loge("Exception in flushNetworkDnsCache: " + e); 3975 } 3976 flushVmDnsCache(); 3977 } 3978 } 3979 3980 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 3981 int last = 0; 3982 for (InetAddress dns : dnses) { 3983 ++last; 3984 String key = "net.dns" + last; 3985 String value = dns.getHostAddress(); 3986 SystemProperties.set(key, value); 3987 } 3988 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 3989 String key = "net.dns" + i; 3990 SystemProperties.set(key, ""); 3991 } 3992 mNumDnsEntries = last; 3993 } 3994 3995 /** 3996 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 3997 * augmented with any stateful capabilities implied from {@code networkAgent} 3998 * (e.g., validated status and captive portal status). 3999 * 4000 * @param networkAgent the network having its capabilities updated. 4001 * @param networkCapabilities the new network capabilities. 4002 */ 4003 private void updateCapabilities(NetworkAgentInfo networkAgent, 4004 NetworkCapabilities networkCapabilities) { 4005 // Don't modify caller's NetworkCapabilities. 4006 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4007 if (networkAgent.lastValidated) { 4008 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4009 } else { 4010 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4011 } 4012 if (networkAgent.lastCaptivePortalDetected) { 4013 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4014 } else { 4015 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4016 } 4017 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 4018 synchronized (networkAgent) { 4019 networkAgent.networkCapabilities = networkCapabilities; 4020 } 4021 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 4022 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 4023 } 4024 } 4025 4026 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4027 for (int i = 0; i < nai.networkRequests.size(); i++) { 4028 NetworkRequest nr = nai.networkRequests.valueAt(i); 4029 // Don't send listening requests to factories. b/17393458 4030 if (!isRequest(nr)) continue; 4031 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4032 } 4033 } 4034 4035 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4036 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4037 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4038 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4039 networkRequest); 4040 } 4041 } 4042 4043 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4044 int notificationType) { 4045 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4046 Intent intent = new Intent(); 4047 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4048 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4049 nri.mPendingIntentSent = true; 4050 sendIntent(nri.mPendingIntent, intent); 4051 } 4052 // else not handled 4053 } 4054 4055 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4056 mPendingIntentWakeLock.acquire(); 4057 try { 4058 if (DBG) log("Sending " + pendingIntent); 4059 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4060 } catch (PendingIntent.CanceledException e) { 4061 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4062 mPendingIntentWakeLock.release(); 4063 releasePendingNetworkRequest(pendingIntent); 4064 } 4065 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4066 } 4067 4068 @Override 4069 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4070 String resultData, Bundle resultExtras) { 4071 if (DBG) log("Finished sending " + pendingIntent); 4072 mPendingIntentWakeLock.release(); 4073 // Release with a delay so the receiving client has an opportunity to put in its 4074 // own request. 4075 releasePendingNetworkRequestWithDelay(pendingIntent); 4076 } 4077 4078 private void callCallbackForRequest(NetworkRequestInfo nri, 4079 NetworkAgentInfo networkAgent, int notificationType) { 4080 if (nri.messenger == null) return; // Default request has no msgr 4081 Bundle bundle = new Bundle(); 4082 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4083 new NetworkRequest(nri.request)); 4084 Message msg = Message.obtain(); 4085 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4086 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4087 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4088 } 4089 switch (notificationType) { 4090 case ConnectivityManager.CALLBACK_LOSING: { 4091 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4092 break; 4093 } 4094 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4095 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4096 new NetworkCapabilities(networkAgent.networkCapabilities)); 4097 break; 4098 } 4099 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4100 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4101 new LinkProperties(networkAgent.linkProperties)); 4102 break; 4103 } 4104 } 4105 msg.what = notificationType; 4106 msg.setData(bundle); 4107 try { 4108 if (VDBG) { 4109 log("sending notification " + notifyTypeToName(notificationType) + 4110 " for " + nri.request); 4111 } 4112 nri.messenger.send(msg); 4113 } catch (RemoteException e) { 4114 // may occur naturally in the race of binder death. 4115 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4116 } 4117 } 4118 4119 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4120 for (int i = 0; i < nai.networkRequests.size(); i++) { 4121 NetworkRequest nr = nai.networkRequests.valueAt(i); 4122 // Ignore listening requests. 4123 if (!isRequest(nr)) continue; 4124 loge("Dead network still had at least " + nr); 4125 break; 4126 } 4127 nai.asyncChannel.disconnect(); 4128 } 4129 4130 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4131 if (oldNetwork == null) { 4132 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4133 return; 4134 } 4135 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4136 teardownUnneededNetwork(oldNetwork); 4137 } 4138 4139 private void makeDefault(NetworkAgentInfo newNetwork) { 4140 if (DBG) log("Switching to new default network: " + newNetwork); 4141 setupDataActivityTracking(newNetwork); 4142 try { 4143 mNetd.setDefaultNetId(newNetwork.network.netId); 4144 } catch (Exception e) { 4145 loge("Exception setting default network :" + e); 4146 } 4147 notifyLockdownVpn(newNetwork); 4148 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4149 updateTcpBufferSizes(newNetwork); 4150 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4151 } 4152 4153 // Handles a network appearing or improving its score. 4154 // 4155 // - Evaluates all current NetworkRequests that can be 4156 // satisfied by newNetwork, and reassigns to newNetwork 4157 // any such requests for which newNetwork is the best. 4158 // 4159 // - Lingers any validated Networks that as a result are no longer 4160 // needed. A network is needed if it is the best network for 4161 // one or more NetworkRequests, or if it is a VPN. 4162 // 4163 // - Tears down newNetwork if it just became validated 4164 // but turns out to be unneeded. 4165 // 4166 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4167 // networks that have no chance (i.e. even if validated) 4168 // of becoming the highest scoring network. 4169 // 4170 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4171 // it does not remove NetworkRequests that other Networks could better satisfy. 4172 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4173 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4174 // as it performs better by a factor of the number of Networks. 4175 // 4176 // @param newNetwork is the network to be matched against NetworkRequests. 4177 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4178 // performed to tear down unvalidated networks that have no chance (i.e. even if 4179 // validated) of becoming the highest scoring network. 4180 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, 4181 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4182 if (!newNetwork.created) return; 4183 boolean keep = newNetwork.isVPN(); 4184 boolean isNewDefault = false; 4185 NetworkAgentInfo oldDefaultNetwork = null; 4186 if (DBG) log("rematching " + newNetwork.name()); 4187 // Find and migrate to this Network any NetworkRequests for 4188 // which this network is now the best. 4189 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4190 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4191 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4192 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4193 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4194 if (newNetwork == currentNetwork) { 4195 if (VDBG) { 4196 log("Network " + newNetwork.name() + " was already satisfying" + 4197 " request " + nri.request.requestId + ". No change."); 4198 } 4199 keep = true; 4200 continue; 4201 } 4202 4203 // check if it satisfies the NetworkCapabilities 4204 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4205 if (newNetwork.satisfies(nri.request)) { 4206 if (!nri.isRequest) { 4207 // This is not a request, it's a callback listener. 4208 // Add it to newNetwork regardless of score. 4209 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4210 continue; 4211 } 4212 4213 // next check if it's better than any current network we're using for 4214 // this request 4215 if (VDBG) { 4216 log("currentScore = " + 4217 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4218 ", newScore = " + newNetwork.getCurrentScore()); 4219 } 4220 if (currentNetwork == null || 4221 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4222 if (currentNetwork != null) { 4223 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4224 currentNetwork.networkRequests.remove(nri.request.requestId); 4225 currentNetwork.networkLingered.add(nri.request); 4226 affectedNetworks.add(currentNetwork); 4227 } else { 4228 if (DBG) log(" accepting network in place of null"); 4229 } 4230 unlinger(newNetwork); 4231 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4232 if (!newNetwork.addRequest(nri.request)) { 4233 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4234 } 4235 addedRequests.add(nri); 4236 keep = true; 4237 // Tell NetworkFactories about the new score, so they can stop 4238 // trying to connect if they know they cannot match it. 4239 // TODO - this could get expensive if we have alot of requests for this 4240 // network. Think about if there is a way to reduce this. Push 4241 // netid->request mapping to each factory? 4242 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4243 if (mDefaultRequest.requestId == nri.request.requestId) { 4244 isNewDefault = true; 4245 oldDefaultNetwork = currentNetwork; 4246 } 4247 } 4248 } 4249 } 4250 // Linger any networks that are no longer needed. 4251 for (NetworkAgentInfo nai : affectedNetworks) { 4252 if (nai.everValidated && unneeded(nai)) { 4253 linger(nai); 4254 } else { 4255 unlinger(nai); 4256 } 4257 } 4258 if (keep) { 4259 if (isNewDefault) { 4260 // Notify system services that this network is up. 4261 makeDefault(newNetwork); 4262 synchronized (ConnectivityService.this) { 4263 // have a new default network, release the transition wakelock in 4264 // a second if it's held. The second pause is to allow apps 4265 // to reconnect over the new network 4266 if (mNetTransitionWakeLock.isHeld()) { 4267 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4268 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4269 mNetTransitionWakeLockSerialNumber, 0), 4270 1000); 4271 } 4272 } 4273 } 4274 4275 // do this after the default net is switched, but 4276 // before LegacyTypeTracker sends legacy broadcasts 4277 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4278 4279 if (isNewDefault) { 4280 // Maintain the illusion: since the legacy API only 4281 // understands one network at a time, we must pretend 4282 // that the current default network disconnected before 4283 // the new one connected. 4284 if (oldDefaultNetwork != null) { 4285 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4286 oldDefaultNetwork, true); 4287 } 4288 mDefaultInetConditionPublished = newNetwork.everValidated ? 100 : 0; 4289 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4290 notifyLockdownVpn(newNetwork); 4291 } 4292 4293 // Notify battery stats service about this network, both the normal 4294 // interface and any stacked links. 4295 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4296 try { 4297 final IBatteryStats bs = BatteryStatsService.getService(); 4298 final int type = newNetwork.networkInfo.getType(); 4299 4300 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4301 bs.noteNetworkInterfaceType(baseIface, type); 4302 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4303 final String stackedIface = stacked.getInterfaceName(); 4304 bs.noteNetworkInterfaceType(stackedIface, type); 4305 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4306 } 4307 } catch (RemoteException ignored) { 4308 } 4309 4310 // This has to happen after the notifyNetworkCallbacks as that tickles each 4311 // ConnectivityManager instance so that legacy requests correctly bind dns 4312 // requests to this network. The legacy users are listening for this bcast 4313 // and will generally do a dns request so they can ensureRouteToHost and if 4314 // they do that before the callbacks happen they'll use the default network. 4315 // 4316 // TODO: Is there still a race here? We send the broadcast 4317 // after sending the callback, but if the app can receive the 4318 // broadcast before the callback, it might still break. 4319 // 4320 // This *does* introduce a race where if the user uses the new api 4321 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4322 // they may get old info. Reverse this after the old startUsing api is removed. 4323 // This is on top of the multiple intent sequencing referenced in the todo above. 4324 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4325 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4326 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4327 // legacy type tracker filters out repeat adds 4328 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4329 } 4330 } 4331 4332 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4333 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4334 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4335 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4336 if (newNetwork.isVPN()) { 4337 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4338 } 4339 } 4340 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4341 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4342 if (unneeded(nai)) { 4343 if (DBG) log("Reaping " + nai.name()); 4344 teardownUnneededNetwork(nai); 4345 } 4346 } 4347 } 4348 } 4349 4350 /** 4351 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4352 * being disconnected. 4353 * @param changed If only one Network's score or capabilities have been modified since the last 4354 * time this function was called, pass this Network in this argument, otherwise pass 4355 * null. 4356 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4357 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4358 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4359 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4360 * network's score. 4361 */ 4362 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4363 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4364 // to avoid the slowness. It is not simply enough to process just "changed", for 4365 // example in the case where "changed"'s score decreases and another network should begin 4366 // satifying a NetworkRequest that "changed" currently satisfies. 4367 4368 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4369 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4370 // rematchNetworkAndRequests() handles. 4371 if (changed != null && oldScore < changed.getCurrentScore()) { 4372 rematchNetworkAndRequests(changed, ReapUnvalidatedNetworks.REAP); 4373 } else { 4374 final NetworkAgentInfo[] nais = mNetworkAgentInfos.values().toArray( 4375 new NetworkAgentInfo[mNetworkAgentInfos.size()]); 4376 // Rematch higher scoring networks first to prevent requests first matching a lower 4377 // scoring network and then a higher scoring network, which could produce multiple 4378 // callbacks and inadvertently unlinger networks. 4379 Arrays.sort(nais); 4380 for (NetworkAgentInfo nai : nais) { 4381 rematchNetworkAndRequests(nai, 4382 // Only reap the last time through the loop. Reaping before all rematching 4383 // is complete could incorrectly teardown a network that hasn't yet been 4384 // rematched. 4385 (nai != nais[nais.length-1]) ? ReapUnvalidatedNetworks.DONT_REAP 4386 : ReapUnvalidatedNetworks.REAP); 4387 } 4388 } 4389 } 4390 4391 private void updateInetCondition(NetworkAgentInfo nai) { 4392 // Don't bother updating until we've graduated to validated at least once. 4393 if (!nai.everValidated) return; 4394 // For now only update icons for default connection. 4395 // TODO: Update WiFi and cellular icons separately. b/17237507 4396 if (!isDefaultNetwork(nai)) return; 4397 4398 int newInetCondition = nai.lastValidated ? 100 : 0; 4399 // Don't repeat publish. 4400 if (newInetCondition == mDefaultInetConditionPublished) return; 4401 4402 mDefaultInetConditionPublished = newInetCondition; 4403 sendInetConditionBroadcast(nai.networkInfo); 4404 } 4405 4406 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4407 if (mLockdownTracker != null) { 4408 if (nai != null && nai.isVPN()) { 4409 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4410 } else { 4411 mLockdownTracker.onNetworkInfoChanged(); 4412 } 4413 } 4414 } 4415 4416 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4417 NetworkInfo.State state = newInfo.getState(); 4418 NetworkInfo oldInfo = null; 4419 synchronized (networkAgent) { 4420 oldInfo = networkAgent.networkInfo; 4421 networkAgent.networkInfo = newInfo; 4422 } 4423 notifyLockdownVpn(networkAgent); 4424 4425 if (oldInfo != null && oldInfo.getState() == state) { 4426 if (VDBG) log("ignoring duplicate network state non-change"); 4427 return; 4428 } 4429 if (DBG) { 4430 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4431 (oldInfo == null ? "null" : oldInfo.getState()) + 4432 " to " + state); 4433 } 4434 4435 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4436 try { 4437 // This should never fail. Specifying an already in use NetID will cause failure. 4438 if (networkAgent.isVPN()) { 4439 mNetd.createVirtualNetwork(networkAgent.network.netId, 4440 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4441 (networkAgent.networkMisc == null || 4442 !networkAgent.networkMisc.allowBypass)); 4443 } else { 4444 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4445 } 4446 } catch (Exception e) { 4447 loge("Error creating network " + networkAgent.network.netId + ": " 4448 + e.getMessage()); 4449 return; 4450 } 4451 networkAgent.created = true; 4452 updateLinkProperties(networkAgent, null); 4453 notifyIfacesChanged(); 4454 4455 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4456 scheduleUnvalidatedPrompt(networkAgent); 4457 4458 if (networkAgent.isVPN()) { 4459 // Temporarily disable the default proxy (not global). 4460 synchronized (mProxyLock) { 4461 if (!mDefaultProxyDisabled) { 4462 mDefaultProxyDisabled = true; 4463 if (mGlobalProxy == null && mDefaultProxy != null) { 4464 sendProxyBroadcast(null); 4465 } 4466 } 4467 } 4468 // TODO: support proxy per network. 4469 } 4470 4471 // Consider network even though it is not yet validated. 4472 rematchNetworkAndRequests(networkAgent, ReapUnvalidatedNetworks.REAP); 4473 4474 // This has to happen after matching the requests, because callbacks are just requests. 4475 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4476 } else if (state == NetworkInfo.State.DISCONNECTED || 4477 state == NetworkInfo.State.SUSPENDED) { 4478 networkAgent.asyncChannel.disconnect(); 4479 if (networkAgent.isVPN()) { 4480 synchronized (mProxyLock) { 4481 if (mDefaultProxyDisabled) { 4482 mDefaultProxyDisabled = false; 4483 if (mGlobalProxy == null && mDefaultProxy != null) { 4484 sendProxyBroadcast(mDefaultProxy); 4485 } 4486 } 4487 } 4488 } 4489 } 4490 } 4491 4492 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4493 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4494 if (score < 0) { 4495 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4496 "). Bumping score to min of 0"); 4497 score = 0; 4498 } 4499 4500 final int oldScore = nai.getCurrentScore(); 4501 nai.setCurrentScore(score); 4502 4503 rematchAllNetworksAndRequests(nai, oldScore); 4504 4505 sendUpdatedScoreToFactories(nai); 4506 } 4507 4508 // notify only this one new request of the current state 4509 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4510 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4511 // TODO - read state from monitor to decide what to send. 4512// if (nai.networkMonitor.isLingering()) { 4513// notifyType = NetworkCallbacks.LOSING; 4514// } else if (nai.networkMonitor.isEvaluating()) { 4515// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4516// } 4517 if (nri.mPendingIntent == null) { 4518 callCallbackForRequest(nri, nai, notifyType); 4519 } else { 4520 sendPendingIntentForRequest(nri, nai, notifyType); 4521 } 4522 } 4523 4524 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4525 // The NetworkInfo we actually send out has no bearing on the real 4526 // state of affairs. For example, if the default connection is mobile, 4527 // and a request for HIPRI has just gone away, we need to pretend that 4528 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4529 // the state to DISCONNECTED, even though the network is of type MOBILE 4530 // and is still connected. 4531 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4532 info.setType(type); 4533 if (connected) { 4534 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4535 sendConnectedBroadcast(info); 4536 } else { 4537 info.setDetailedState(DetailedState.DISCONNECTED, info.getReason(), info.getExtraInfo()); 4538 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4539 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4540 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4541 if (info.isFailover()) { 4542 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4543 nai.networkInfo.setFailover(false); 4544 } 4545 if (info.getReason() != null) { 4546 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4547 } 4548 if (info.getExtraInfo() != null) { 4549 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4550 } 4551 NetworkAgentInfo newDefaultAgent = null; 4552 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4553 newDefaultAgent = getDefaultNetwork(); 4554 if (newDefaultAgent != null) { 4555 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4556 newDefaultAgent.networkInfo); 4557 } else { 4558 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4559 } 4560 } 4561 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4562 mDefaultInetConditionPublished); 4563 sendStickyBroadcast(intent); 4564 if (newDefaultAgent != null) { 4565 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4566 } 4567 } 4568 } 4569 4570 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4571 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4572 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4573 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4574 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4575 if (VDBG) log(" sending notification for " + nr); 4576 if (nri.mPendingIntent == null) { 4577 callCallbackForRequest(nri, networkAgent, notifyType); 4578 } else { 4579 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4580 } 4581 } 4582 } 4583 4584 private String notifyTypeToName(int notifyType) { 4585 switch (notifyType) { 4586 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4587 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4588 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4589 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4590 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4591 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4592 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4593 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4594 } 4595 return "UNKNOWN"; 4596 } 4597 4598 /** 4599 * Notify other system services that set of active ifaces has changed. 4600 */ 4601 private void notifyIfacesChanged() { 4602 try { 4603 mStatsService.forceUpdateIfaces(); 4604 } catch (Exception ignored) { 4605 } 4606 } 4607 4608 @Override 4609 public boolean addVpnAddress(String address, int prefixLength) { 4610 throwIfLockdownEnabled(); 4611 int user = UserHandle.getUserId(Binder.getCallingUid()); 4612 synchronized (mVpns) { 4613 return mVpns.get(user).addAddress(address, prefixLength); 4614 } 4615 } 4616 4617 @Override 4618 public boolean removeVpnAddress(String address, int prefixLength) { 4619 throwIfLockdownEnabled(); 4620 int user = UserHandle.getUserId(Binder.getCallingUid()); 4621 synchronized (mVpns) { 4622 return mVpns.get(user).removeAddress(address, prefixLength); 4623 } 4624 } 4625 4626 @Override 4627 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4628 throwIfLockdownEnabled(); 4629 int user = UserHandle.getUserId(Binder.getCallingUid()); 4630 boolean success; 4631 synchronized (mVpns) { 4632 success = mVpns.get(user).setUnderlyingNetworks(networks); 4633 } 4634 if (success) { 4635 notifyIfacesChanged(); 4636 } 4637 return success; 4638 } 4639 4640 @Override 4641 public void factoryReset() { 4642 enforceConnectivityInternalPermission(); 4643 4644 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 4645 return; 4646 } 4647 4648 final int userId = UserHandle.getCallingUserId(); 4649 4650 // Turn airplane mode off 4651 setAirplaneMode(false); 4652 4653 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 4654 // Untether 4655 for (String tether : getTetheredIfaces()) { 4656 untether(tether); 4657 } 4658 } 4659 4660 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 4661 // Turn VPN off 4662 VpnConfig vpnConfig = getVpnConfig(userId); 4663 if (vpnConfig != null) { 4664 if (vpnConfig.legacy) { 4665 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 4666 } else { 4667 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 4668 // in the future without user intervention. 4669 setVpnPackageAuthorization(vpnConfig.user, userId, false); 4670 4671 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 4672 } 4673 } 4674 } 4675 } 4676} 4677