ConnectivityService.java revision 8d48252b80cdb261cd2fa7372a01e6197f95efa6
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 // Arguments to rematchNetworkAndRequests() 224 private enum NascentState { 225 // Indicates a network was just validated for the first time. If the network is found to 226 // be unwanted (i.e. not satisfy any NetworkRequests) it is torn down. 227 JUST_VALIDATED, 228 // Indicates a network was not validated for the first time immediately prior to this call. 229 NOT_JUST_VALIDATED 230 }; 231 private enum ReapUnvalidatedNetworks { 232 // Tear down unvalidated networks that have no chance (i.e. even if validated) of becoming 233 // the highest scoring network satisfying a NetworkRequest. This should be passed when it's 234 // known that there may be unvalidated networks that could potentially be reaped, and when 235 // all networks have been rematched against all NetworkRequests. 236 REAP, 237 // Don't reap unvalidated networks. This should be passed when it's known that there are 238 // no unvalidated networks that could potentially be reaped, and when some networks have 239 // not yet been rematched against all NetworkRequests. 240 DONT_REAP 241 }; 242 243 /** 244 * used internally to change our mobile data enabled flag 245 */ 246 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 247 248 /** 249 * used internally to clear a wakelock when transitioning 250 * from one net to another. Clear happens when we get a new 251 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 252 * after a timeout if no network is found (typically 1 min). 253 */ 254 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 255 256 /** 257 * used internally to reload global proxy settings 258 */ 259 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 260 261 /** 262 * used internally to send a sticky broadcast delayed. 263 */ 264 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 265 266 /** 267 * PAC manager has received new port. 268 */ 269 private static final int EVENT_PROXY_HAS_CHANGED = 16; 270 271 /** 272 * used internally when registering NetworkFactories 273 * obj = NetworkFactoryInfo 274 */ 275 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 276 277 /** 278 * used internally when registering NetworkAgents 279 * obj = Messenger 280 */ 281 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 282 283 /** 284 * used to add a network request 285 * includes a NetworkRequestInfo 286 */ 287 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 288 289 /** 290 * indicates a timeout period is over - check if we had a network yet or not 291 * and if not, call the timeout calback (but leave the request live until they 292 * cancel it. 293 * includes a NetworkRequestInfo 294 */ 295 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 296 297 /** 298 * used to add a network listener - no request 299 * includes a NetworkRequestInfo 300 */ 301 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 302 303 /** 304 * used to remove a network request, either a listener or a real request 305 * arg1 = UID of caller 306 * obj = NetworkRequest 307 */ 308 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 309 310 /** 311 * used internally when registering NetworkFactories 312 * obj = Messenger 313 */ 314 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 315 316 /** 317 * used internally to expire a wakelock when transitioning 318 * from one net to another. Expire happens when we fail to find 319 * a new network (typically after 1 minute) - 320 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 321 * a replacement network. 322 */ 323 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 324 325 /** 326 * Used internally to indicate the system is ready. 327 */ 328 private static final int EVENT_SYSTEM_READY = 25; 329 330 /** 331 * used to add a network request with a pending intent 332 * obj = NetworkRequestInfo 333 */ 334 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 335 336 /** 337 * used to remove a pending intent and its associated network request. 338 * arg1 = UID of caller 339 * obj = PendingIntent 340 */ 341 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 342 343 /** 344 * used to specify whether a network should be used even if unvalidated. 345 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 346 * arg2 = whether to remember this choice in the future (1 or 0) 347 * obj = network 348 */ 349 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 350 351 /** 352 * used to ask the user to confirm a connection to an unvalidated network. 353 * obj = network 354 */ 355 private static final int EVENT_PROMPT_UNVALIDATED = 29; 356 357 /** 358 * used internally to (re)configure mobile data always-on settings. 359 */ 360 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 361 362 /** 363 * used to add a network listener with a pending intent 364 * obj = NetworkRequestInfo 365 */ 366 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 367 368 /** Handler used for internal events. */ 369 final private InternalHandler mHandler; 370 /** Handler used for incoming {@link NetworkStateTracker} events. */ 371 final private NetworkStateTrackerHandler mTrackerHandler; 372 373 private boolean mSystemReady; 374 private Intent mInitialBroadcast; 375 376 private PowerManager.WakeLock mNetTransitionWakeLock; 377 private String mNetTransitionWakeLockCausedBy = ""; 378 private int mNetTransitionWakeLockSerialNumber; 379 private int mNetTransitionWakeLockTimeout; 380 private final PowerManager.WakeLock mPendingIntentWakeLock; 381 382 private InetAddress mDefaultDns; 383 384 // used in DBG mode to track inet condition reports 385 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 386 private ArrayList mInetLog; 387 388 // track the current default http proxy - tell the world if we get a new one (real change) 389 private volatile ProxyInfo mDefaultProxy = null; 390 private Object mProxyLock = new Object(); 391 private boolean mDefaultProxyDisabled = false; 392 393 // track the global proxy. 394 private ProxyInfo mGlobalProxy = null; 395 396 private PacManager mPacManager = null; 397 398 final private SettingsObserver mSettingsObserver; 399 400 private UserManager mUserManager; 401 402 NetworkConfig[] mNetConfigs; 403 int mNetworksDefined; 404 405 // the set of network types that can only be enabled by system/sig apps 406 List mProtectedNetworks; 407 408 private DataConnectionStats mDataConnectionStats; 409 410 TelephonyManager mTelephonyManager; 411 412 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 413 private final static int MIN_NET_ID = 100; // some reserved marks 414 private final static int MAX_NET_ID = 65535; 415 private int mNextNetId = MIN_NET_ID; 416 417 // sequence number of NetworkRequests 418 private int mNextNetworkRequestId = 1; 419 420 // Array of <Network,ReadOnlyLocalLogs> tracking network validation and results 421 private static final int MAX_VALIDATION_LOGS = 10; 422 private final ArrayDeque<Pair<Network,ReadOnlyLocalLog>> mValidationLogs = 423 new ArrayDeque<Pair<Network,ReadOnlyLocalLog>>(MAX_VALIDATION_LOGS); 424 425 private void addValidationLogs(ReadOnlyLocalLog log, Network network) { 426 synchronized(mValidationLogs) { 427 while (mValidationLogs.size() >= MAX_VALIDATION_LOGS) { 428 mValidationLogs.removeLast(); 429 } 430 mValidationLogs.addFirst(new Pair(network, log)); 431 } 432 } 433 434 /** 435 * Implements support for the legacy "one network per network type" model. 436 * 437 * We used to have a static array of NetworkStateTrackers, one for each 438 * network type, but that doesn't work any more now that we can have, 439 * for example, more that one wifi network. This class stores all the 440 * NetworkAgentInfo objects that support a given type, but the legacy 441 * API will only see the first one. 442 * 443 * It serves two main purposes: 444 * 445 * 1. Provide information about "the network for a given type" (since this 446 * API only supports one). 447 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 448 * the first network for a given type changes, or if the default network 449 * changes. 450 */ 451 private class LegacyTypeTracker { 452 453 private static final boolean DBG = true; 454 private static final boolean VDBG = false; 455 private static final String TAG = "CSLegacyTypeTracker"; 456 457 /** 458 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 459 * Each list holds references to all NetworkAgentInfos that are used to 460 * satisfy requests for that network type. 461 * 462 * This array is built out at startup such that an unsupported network 463 * doesn't get an ArrayList instance, making this a tristate: 464 * unsupported, supported but not active and active. 465 * 466 * The actual lists are populated when we scan the network types that 467 * are supported on this device. 468 */ 469 private ArrayList<NetworkAgentInfo> mTypeLists[]; 470 471 public LegacyTypeTracker() { 472 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 473 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 474 } 475 476 public void addSupportedType(int type) { 477 if (mTypeLists[type] != null) { 478 throw new IllegalStateException( 479 "legacy list for type " + type + "already initialized"); 480 } 481 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 482 } 483 484 public boolean isTypeSupported(int type) { 485 return isNetworkTypeValid(type) && mTypeLists[type] != null; 486 } 487 488 public NetworkAgentInfo getNetworkForType(int type) { 489 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 490 return mTypeLists[type].get(0); 491 } else { 492 return null; 493 } 494 } 495 496 private void maybeLogBroadcast(NetworkAgentInfo nai, DetailedState state, int type, 497 boolean isDefaultNetwork) { 498 if (DBG) { 499 log("Sending " + state + 500 " broadcast for type " + type + " " + nai.name() + 501 " isDefaultNetwork=" + isDefaultNetwork); 502 } 503 } 504 505 /** Adds the given network to the specified legacy type list. */ 506 public void add(int type, NetworkAgentInfo nai) { 507 if (!isTypeSupported(type)) { 508 return; // Invalid network type. 509 } 510 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 511 512 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 513 if (list.contains(nai)) { 514 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 515 return; 516 } 517 518 list.add(nai); 519 520 // Send a broadcast if this is the first network of its type or if it's the default. 521 final boolean isDefaultNetwork = isDefaultNetwork(nai); 522 if (list.size() == 1 || isDefaultNetwork) { 523 maybeLogBroadcast(nai, DetailedState.CONNECTED, type, isDefaultNetwork); 524 sendLegacyNetworkBroadcast(nai, DetailedState.CONNECTED, type); 525 } 526 } 527 528 /** Removes the given network from the specified legacy type list. */ 529 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 530 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 531 if (list == null || list.isEmpty()) { 532 return; 533 } 534 535 final boolean wasFirstNetwork = list.get(0).equals(nai); 536 537 if (!list.remove(nai)) { 538 return; 539 } 540 541 final DetailedState state = DetailedState.DISCONNECTED; 542 543 if (wasFirstNetwork || wasDefault) { 544 maybeLogBroadcast(nai, state, type, wasDefault); 545 sendLegacyNetworkBroadcast(nai, state, type); 546 } 547 548 if (!list.isEmpty() && wasFirstNetwork) { 549 if (DBG) log("Other network available for type " + type + 550 ", sending connected broadcast"); 551 final NetworkAgentInfo replacement = list.get(0); 552 maybeLogBroadcast(replacement, state, type, isDefaultNetwork(replacement)); 553 sendLegacyNetworkBroadcast(replacement, state, type); 554 } 555 } 556 557 /** Removes the given network from all legacy type lists. */ 558 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 559 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 560 for (int type = 0; type < mTypeLists.length; type++) { 561 remove(type, nai, wasDefault); 562 } 563 } 564 565 // send out another legacy broadcast - currently only used for suspend/unsuspend 566 // toggle 567 public void update(NetworkAgentInfo nai) { 568 final boolean isDefault = isDefaultNetwork(nai); 569 final DetailedState state = nai.networkInfo.getDetailedState(); 570 for (int type = 0; type < mTypeLists.length; type++) { 571 final ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 572 final boolean isFirst = (list != null && list.size() > 0 && nai == list.get(0)); 573 if (isFirst || isDefault) { 574 maybeLogBroadcast(nai, state, type, isDefault); 575 sendLegacyNetworkBroadcast(nai, state, type); 576 } 577 } 578 } 579 580 private String naiToString(NetworkAgentInfo nai) { 581 String name = (nai != null) ? nai.name() : "null"; 582 String state = (nai.networkInfo != null) ? 583 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 584 "???/???"; 585 return name + " " + state; 586 } 587 588 public void dump(IndentingPrintWriter pw) { 589 pw.println("mLegacyTypeTracker:"); 590 pw.increaseIndent(); 591 pw.print("Supported types:"); 592 for (int type = 0; type < mTypeLists.length; type++) { 593 if (mTypeLists[type] != null) pw.print(" " + type); 594 } 595 pw.println(); 596 pw.println("Current state:"); 597 pw.increaseIndent(); 598 for (int type = 0; type < mTypeLists.length; type++) { 599 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 600 for (NetworkAgentInfo nai : mTypeLists[type]) { 601 pw.println(type + " " + naiToString(nai)); 602 } 603 } 604 pw.decreaseIndent(); 605 pw.decreaseIndent(); 606 pw.println(); 607 } 608 609 // This class needs its own log method because it has a different TAG. 610 private void log(String s) { 611 Slog.d(TAG, s); 612 } 613 614 } 615 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 616 617 public ConnectivityService(Context context, INetworkManagementService netManager, 618 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 619 if (DBG) log("ConnectivityService starting up"); 620 621 mDefaultRequest = createInternetRequestForTransport(-1); 622 mNetworkRequests.put(mDefaultRequest, new NetworkRequestInfo( 623 null, mDefaultRequest, new Binder(), NetworkRequestInfo.REQUEST)); 624 625 mDefaultMobileDataRequest = createInternetRequestForTransport( 626 NetworkCapabilities.TRANSPORT_CELLULAR); 627 628 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 629 handlerThread.start(); 630 mHandler = new InternalHandler(handlerThread.getLooper()); 631 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 632 633 // setup our unique device name 634 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 635 String id = Settings.Secure.getString(context.getContentResolver(), 636 Settings.Secure.ANDROID_ID); 637 if (id != null && id.length() > 0) { 638 String name = new String("android-").concat(id); 639 SystemProperties.set("net.hostname", name); 640 } 641 } 642 643 // read our default dns server ip 644 String dns = Settings.Global.getString(context.getContentResolver(), 645 Settings.Global.DEFAULT_DNS_SERVER); 646 if (dns == null || dns.length() == 0) { 647 dns = context.getResources().getString( 648 com.android.internal.R.string.config_default_dns_server); 649 } 650 try { 651 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 652 } catch (IllegalArgumentException e) { 653 loge("Error setting defaultDns using " + dns); 654 } 655 656 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 657 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 658 659 mContext = checkNotNull(context, "missing Context"); 660 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 661 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 662 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 663 mKeyStore = KeyStore.getInstance(); 664 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 665 666 try { 667 mPolicyManager.registerListener(mPolicyListener); 668 } catch (RemoteException e) { 669 // ouch, no rules updates means some processes may never get network 670 loge("unable to register INetworkPolicyListener" + e.toString()); 671 } 672 673 final PowerManager powerManager = (PowerManager) context.getSystemService( 674 Context.POWER_SERVICE); 675 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 676 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 677 com.android.internal.R.integer.config_networkTransitionTimeout); 678 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 679 680 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 681 682 // TODO: What is the "correct" way to do determine if this is a wifi only device? 683 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 684 log("wifiOnly=" + wifiOnly); 685 String[] naStrings = context.getResources().getStringArray( 686 com.android.internal.R.array.networkAttributes); 687 for (String naString : naStrings) { 688 try { 689 NetworkConfig n = new NetworkConfig(naString); 690 if (VDBG) log("naString=" + naString + " config=" + n); 691 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 692 loge("Error in networkAttributes - ignoring attempt to define type " + 693 n.type); 694 continue; 695 } 696 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 697 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 698 n.type); 699 continue; 700 } 701 if (mNetConfigs[n.type] != null) { 702 loge("Error in networkAttributes - ignoring attempt to redefine type " + 703 n.type); 704 continue; 705 } 706 mLegacyTypeTracker.addSupportedType(n.type); 707 708 mNetConfigs[n.type] = n; 709 mNetworksDefined++; 710 } catch(Exception e) { 711 // ignore it - leave the entry null 712 } 713 } 714 715 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 716 if (mNetConfigs[TYPE_VPN] == null) { 717 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 718 // don't need to add TYPE_VPN to mNetConfigs. 719 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 720 mNetworksDefined++; // used only in the log() statement below. 721 } 722 723 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 724 725 mProtectedNetworks = new ArrayList<Integer>(); 726 int[] protectedNetworks = context.getResources().getIntArray( 727 com.android.internal.R.array.config_protectedNetworks); 728 for (int p : protectedNetworks) { 729 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 730 mProtectedNetworks.add(p); 731 } else { 732 if (DBG) loge("Ignoring protectedNetwork " + p); 733 } 734 } 735 736 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 737 && SystemProperties.get("ro.build.type").equals("eng"); 738 739 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 740 741 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 742 743 //set up the listener for user state for creating user VPNs 744 IntentFilter intentFilter = new IntentFilter(); 745 intentFilter.addAction(Intent.ACTION_USER_STARTING); 746 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 747 mContext.registerReceiverAsUser( 748 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 749 750 try { 751 mNetd.registerObserver(mTethering); 752 mNetd.registerObserver(mDataActivityObserver); 753 } catch (RemoteException e) { 754 loge("Error registering observer :" + e); 755 } 756 757 if (DBG) { 758 mInetLog = new ArrayList(); 759 } 760 761 mSettingsObserver = new SettingsObserver(mContext, mHandler); 762 registerSettingsCallbacks(); 763 764 mDataConnectionStats = new DataConnectionStats(mContext); 765 mDataConnectionStats.startMonitoring(); 766 767 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 768 769 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 770 } 771 772 private NetworkRequest createInternetRequestForTransport(int transportType) { 773 NetworkCapabilities netCap = new NetworkCapabilities(); 774 netCap.addCapability(NET_CAPABILITY_INTERNET); 775 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 776 if (transportType > -1) { 777 netCap.addTransportType(transportType); 778 } 779 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 780 } 781 782 private void handleMobileDataAlwaysOn() { 783 final boolean enable = (Settings.Global.getInt( 784 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 785 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 786 if (enable == isEnabled) { 787 return; // Nothing to do. 788 } 789 790 if (enable) { 791 handleRegisterNetworkRequest(new NetworkRequestInfo( 792 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestInfo.REQUEST)); 793 } else { 794 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 795 } 796 } 797 798 private void registerSettingsCallbacks() { 799 // Watch for global HTTP proxy changes. 800 mSettingsObserver.observe( 801 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 802 EVENT_APPLY_GLOBAL_HTTP_PROXY); 803 804 // Watch for whether or not to keep mobile data always on. 805 mSettingsObserver.observe( 806 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 807 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 808 } 809 810 private synchronized int nextNetworkRequestId() { 811 return mNextNetworkRequestId++; 812 } 813 814 @VisibleForTesting 815 protected int reserveNetId() { 816 synchronized (mNetworkForNetId) { 817 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 818 int netId = mNextNetId; 819 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 820 // Make sure NetID unused. http://b/16815182 821 if (!mNetIdInUse.get(netId)) { 822 mNetIdInUse.put(netId, true); 823 return netId; 824 } 825 } 826 } 827 throw new IllegalStateException("No free netIds"); 828 } 829 830 private NetworkState getFilteredNetworkState(int networkType, int uid) { 831 NetworkInfo info = null; 832 LinkProperties lp = null; 833 NetworkCapabilities nc = null; 834 Network network = null; 835 String subscriberId = null; 836 837 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 838 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 839 if (nai != null) { 840 synchronized (nai) { 841 info = new NetworkInfo(nai.networkInfo); 842 lp = new LinkProperties(nai.linkProperties); 843 nc = new NetworkCapabilities(nai.networkCapabilities); 844 // Network objects are outwardly immutable so there is no point to duplicating. 845 // Duplicating also precludes sharing socket factories and connection pools. 846 network = nai.network; 847 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 848 } 849 info.setType(networkType); 850 } else { 851 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 852 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 853 info.setIsAvailable(true); 854 lp = new LinkProperties(); 855 nc = new NetworkCapabilities(); 856 network = null; 857 } 858 info = getFilteredNetworkInfo(info, lp, uid); 859 } 860 861 return new NetworkState(info, lp, nc, network, subscriberId, null); 862 } 863 864 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 865 if (network == null) { 866 return null; 867 } 868 synchronized (mNetworkForNetId) { 869 return mNetworkForNetId.get(network.netId); 870 } 871 }; 872 873 private Network[] getVpnUnderlyingNetworks(int uid) { 874 if (!mLockdownEnabled) { 875 int user = UserHandle.getUserId(uid); 876 synchronized (mVpns) { 877 Vpn vpn = mVpns.get(user); 878 if (vpn != null && vpn.appliesToUid(uid)) { 879 return vpn.getUnderlyingNetworks(); 880 } 881 } 882 } 883 return null; 884 } 885 886 private NetworkState getUnfilteredActiveNetworkState(int uid) { 887 NetworkInfo info = null; 888 LinkProperties lp = null; 889 NetworkCapabilities nc = null; 890 Network network = null; 891 String subscriberId = null; 892 893 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 894 895 final Network[] networks = getVpnUnderlyingNetworks(uid); 896 if (networks != null) { 897 // getUnderlyingNetworks() returns: 898 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 899 // empty array => the VPN explicitly said "no default network". 900 // non-empty array => the VPN specified one or more default networks; we use the 901 // first one. 902 if (networks.length > 0) { 903 nai = getNetworkAgentInfoForNetwork(networks[0]); 904 } else { 905 nai = null; 906 } 907 } 908 909 if (nai != null) { 910 synchronized (nai) { 911 info = new NetworkInfo(nai.networkInfo); 912 lp = new LinkProperties(nai.linkProperties); 913 nc = new NetworkCapabilities(nai.networkCapabilities); 914 // Network objects are outwardly immutable so there is no point to duplicating. 915 // Duplicating also precludes sharing socket factories and connection pools. 916 network = nai.network; 917 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 918 } 919 } 920 921 return new NetworkState(info, lp, nc, network, subscriberId, null); 922 } 923 924 /** 925 * Check if UID should be blocked from using the network with the given LinkProperties. 926 */ 927 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 928 final boolean networkCostly; 929 final int uidRules; 930 931 final String iface = (lp == null ? "" : lp.getInterfaceName()); 932 synchronized (mRulesLock) { 933 networkCostly = mMeteredIfaces.contains(iface); 934 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 935 } 936 937 if ((uidRules & RULE_REJECT_ALL) != 0 938 || (networkCostly && (uidRules & RULE_REJECT_METERED) != 0)) { 939 return true; 940 } 941 942 // no restrictive rules; network is visible 943 return false; 944 } 945 946 /** 947 * Return a filtered {@link NetworkInfo}, potentially marked 948 * {@link DetailedState#BLOCKED} based on 949 * {@link #isNetworkWithLinkPropertiesBlocked}. 950 */ 951 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 952 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 953 // network is blocked; clone and override state 954 info = new NetworkInfo(info); 955 info.setDetailedState(DetailedState.BLOCKED, null, null); 956 if (VDBG) { 957 log("returning Blocked NetworkInfo for ifname=" + 958 lp.getInterfaceName() + ", uid=" + uid); 959 } 960 } 961 if (info != null && mLockdownTracker != null) { 962 info = mLockdownTracker.augmentNetworkInfo(info); 963 if (VDBG) log("returning Locked NetworkInfo"); 964 } 965 return info; 966 } 967 968 /** 969 * Return NetworkInfo for the active (i.e., connected) network interface. 970 * It is assumed that at most one network is active at a time. If more 971 * than one is active, it is indeterminate which will be returned. 972 * @return the info for the active network, or {@code null} if none is 973 * active 974 */ 975 @Override 976 public NetworkInfo getActiveNetworkInfo() { 977 enforceAccessPermission(); 978 final int uid = Binder.getCallingUid(); 979 NetworkState state = getUnfilteredActiveNetworkState(uid); 980 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 981 } 982 983 @Override 984 public Network getActiveNetwork() { 985 enforceAccessPermission(); 986 final int uid = Binder.getCallingUid(); 987 final int user = UserHandle.getUserId(uid); 988 int vpnNetId = NETID_UNSET; 989 synchronized (mVpns) { 990 final Vpn vpn = mVpns.get(user); 991 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 992 } 993 NetworkAgentInfo nai; 994 if (vpnNetId != NETID_UNSET) { 995 synchronized (mNetworkForNetId) { 996 nai = mNetworkForNetId.get(vpnNetId); 997 } 998 if (nai != null) return nai.network; 999 } 1000 nai = getDefaultNetwork(); 1001 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 1002 return nai != null ? nai.network : null; 1003 } 1004 1005 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1006 enforceAccessPermission(); 1007 final int uid = Binder.getCallingUid(); 1008 NetworkState state = getUnfilteredActiveNetworkState(uid); 1009 return state.networkInfo; 1010 } 1011 1012 @Override 1013 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1014 enforceConnectivityInternalPermission(); 1015 NetworkState state = getUnfilteredActiveNetworkState(uid); 1016 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1017 } 1018 1019 @Override 1020 public NetworkInfo getNetworkInfo(int networkType) { 1021 enforceAccessPermission(); 1022 final int uid = Binder.getCallingUid(); 1023 if (getVpnUnderlyingNetworks(uid) != null) { 1024 // A VPN is active, so we may need to return one of its underlying networks. This 1025 // information is not available in LegacyTypeTracker, so we have to get it from 1026 // getUnfilteredActiveNetworkState. 1027 NetworkState state = getUnfilteredActiveNetworkState(uid); 1028 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1029 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1030 } 1031 } 1032 NetworkState state = getFilteredNetworkState(networkType, uid); 1033 return state.networkInfo; 1034 } 1035 1036 @Override 1037 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1038 enforceAccessPermission(); 1039 final int uid = Binder.getCallingUid(); 1040 NetworkInfo info = null; 1041 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1042 if (nai != null) { 1043 synchronized (nai) { 1044 info = new NetworkInfo(nai.networkInfo); 1045 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1046 } 1047 } 1048 return info; 1049 } 1050 1051 @Override 1052 public NetworkInfo[] getAllNetworkInfo() { 1053 enforceAccessPermission(); 1054 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1055 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1056 networkType++) { 1057 NetworkInfo info = getNetworkInfo(networkType); 1058 if (info != null) { 1059 result.add(info); 1060 } 1061 } 1062 return result.toArray(new NetworkInfo[result.size()]); 1063 } 1064 1065 @Override 1066 public Network getNetworkForType(int networkType) { 1067 enforceAccessPermission(); 1068 final int uid = Binder.getCallingUid(); 1069 NetworkState state = getFilteredNetworkState(networkType, uid); 1070 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1071 return state.network; 1072 } 1073 return null; 1074 } 1075 1076 @Override 1077 public Network[] getAllNetworks() { 1078 enforceAccessPermission(); 1079 synchronized (mNetworkForNetId) { 1080 final Network[] result = new Network[mNetworkForNetId.size()]; 1081 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1082 result[i] = mNetworkForNetId.valueAt(i).network; 1083 } 1084 return result; 1085 } 1086 } 1087 1088 @Override 1089 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1090 // The basic principle is: if an app's traffic could possibly go over a 1091 // network, without the app doing anything multinetwork-specific, 1092 // (hence, by "default"), then include that network's capabilities in 1093 // the array. 1094 // 1095 // In the normal case, app traffic only goes over the system's default 1096 // network connection, so that's the only network returned. 1097 // 1098 // With a VPN in force, some app traffic may go into the VPN, and thus 1099 // over whatever underlying networks the VPN specifies, while other app 1100 // traffic may go over the system default network (e.g.: a split-tunnel 1101 // VPN, or an app disallowed by the VPN), so the set of networks 1102 // returned includes the VPN's underlying networks and the system 1103 // default. 1104 enforceAccessPermission(); 1105 1106 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1107 1108 NetworkAgentInfo nai = getDefaultNetwork(); 1109 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1110 if (nc != null) { 1111 result.put(nai.network, nc); 1112 } 1113 1114 if (!mLockdownEnabled) { 1115 synchronized (mVpns) { 1116 Vpn vpn = mVpns.get(userId); 1117 if (vpn != null) { 1118 Network[] networks = vpn.getUnderlyingNetworks(); 1119 if (networks != null) { 1120 for (Network network : networks) { 1121 nai = getNetworkAgentInfoForNetwork(network); 1122 nc = getNetworkCapabilitiesInternal(nai); 1123 if (nc != null) { 1124 result.put(network, nc); 1125 } 1126 } 1127 } 1128 } 1129 } 1130 } 1131 1132 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1133 out = result.values().toArray(out); 1134 return out; 1135 } 1136 1137 @Override 1138 public boolean isNetworkSupported(int networkType) { 1139 enforceAccessPermission(); 1140 return mLegacyTypeTracker.isTypeSupported(networkType); 1141 } 1142 1143 /** 1144 * Return LinkProperties for the active (i.e., connected) default 1145 * network interface. It is assumed that at most one default network 1146 * is active at a time. If more than one is active, it is indeterminate 1147 * which will be returned. 1148 * @return the ip properties for the active network, or {@code null} if 1149 * none is active 1150 */ 1151 @Override 1152 public LinkProperties getActiveLinkProperties() { 1153 enforceAccessPermission(); 1154 final int uid = Binder.getCallingUid(); 1155 NetworkState state = getUnfilteredActiveNetworkState(uid); 1156 return state.linkProperties; 1157 } 1158 1159 @Override 1160 public LinkProperties getLinkPropertiesForType(int networkType) { 1161 enforceAccessPermission(); 1162 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1163 if (nai != null) { 1164 synchronized (nai) { 1165 return new LinkProperties(nai.linkProperties); 1166 } 1167 } 1168 return null; 1169 } 1170 1171 // TODO - this should be ALL networks 1172 @Override 1173 public LinkProperties getLinkProperties(Network network) { 1174 enforceAccessPermission(); 1175 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1176 if (nai != null) { 1177 synchronized (nai) { 1178 return new LinkProperties(nai.linkProperties); 1179 } 1180 } 1181 return null; 1182 } 1183 1184 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1185 if (nai != null) { 1186 synchronized (nai) { 1187 if (nai.networkCapabilities != null) { 1188 return new NetworkCapabilities(nai.networkCapabilities); 1189 } 1190 } 1191 } 1192 return null; 1193 } 1194 1195 @Override 1196 public NetworkCapabilities getNetworkCapabilities(Network network) { 1197 enforceAccessPermission(); 1198 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1199 } 1200 1201 @Override 1202 public NetworkState[] getAllNetworkState() { 1203 // Require internal since we're handing out IMSI details 1204 enforceConnectivityInternalPermission(); 1205 1206 final ArrayList<NetworkState> result = Lists.newArrayList(); 1207 for (Network network : getAllNetworks()) { 1208 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1209 if (nai != null) { 1210 synchronized (nai) { 1211 final String subscriberId = (nai.networkMisc != null) 1212 ? nai.networkMisc.subscriberId : null; 1213 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1214 nai.networkCapabilities, network, subscriberId, null)); 1215 } 1216 } 1217 } 1218 return result.toArray(new NetworkState[result.size()]); 1219 } 1220 1221 @Override 1222 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1223 enforceAccessPermission(); 1224 final int uid = Binder.getCallingUid(); 1225 final long token = Binder.clearCallingIdentity(); 1226 try { 1227 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1228 if (state.networkInfo != null) { 1229 try { 1230 return mPolicyManager.getNetworkQuotaInfo(state); 1231 } catch (RemoteException e) { 1232 } 1233 } 1234 return null; 1235 } finally { 1236 Binder.restoreCallingIdentity(token); 1237 } 1238 } 1239 1240 @Override 1241 public boolean isActiveNetworkMetered() { 1242 enforceAccessPermission(); 1243 final int uid = Binder.getCallingUid(); 1244 final long token = Binder.clearCallingIdentity(); 1245 try { 1246 return isActiveNetworkMeteredUnchecked(uid); 1247 } finally { 1248 Binder.restoreCallingIdentity(token); 1249 } 1250 } 1251 1252 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1253 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1254 if (state.networkInfo != null) { 1255 try { 1256 return mPolicyManager.isNetworkMetered(state); 1257 } catch (RemoteException e) { 1258 } 1259 } 1260 return false; 1261 } 1262 1263 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1264 @Override 1265 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1266 int deviceType = Integer.parseInt(label); 1267 sendDataActivityBroadcast(deviceType, active, tsNanos); 1268 } 1269 }; 1270 1271 /** 1272 * Ensure that a network route exists to deliver traffic to the specified 1273 * host via the specified network interface. 1274 * @param networkType the type of the network over which traffic to the 1275 * specified host is to be routed 1276 * @param hostAddress the IP address of the host to which the route is 1277 * desired 1278 * @return {@code true} on success, {@code false} on failure 1279 */ 1280 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1281 enforceChangePermission(); 1282 if (mProtectedNetworks.contains(networkType)) { 1283 enforceConnectivityInternalPermission(); 1284 } 1285 1286 InetAddress addr; 1287 try { 1288 addr = InetAddress.getByAddress(hostAddress); 1289 } catch (UnknownHostException e) { 1290 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1291 return false; 1292 } 1293 1294 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1295 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1296 return false; 1297 } 1298 1299 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1300 if (nai == null) { 1301 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1302 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1303 } else { 1304 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1305 } 1306 return false; 1307 } 1308 1309 DetailedState netState; 1310 synchronized (nai) { 1311 netState = nai.networkInfo.getDetailedState(); 1312 } 1313 1314 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1315 if (VDBG) { 1316 log("requestRouteToHostAddress on down network " 1317 + "(" + networkType + ") - dropped" 1318 + " netState=" + netState); 1319 } 1320 return false; 1321 } 1322 1323 final int uid = Binder.getCallingUid(); 1324 final long token = Binder.clearCallingIdentity(); 1325 try { 1326 LinkProperties lp; 1327 int netId; 1328 synchronized (nai) { 1329 lp = nai.linkProperties; 1330 netId = nai.network.netId; 1331 } 1332 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1333 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1334 return ok; 1335 } finally { 1336 Binder.restoreCallingIdentity(token); 1337 } 1338 } 1339 1340 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1341 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1342 if (bestRoute == null) { 1343 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1344 } else { 1345 String iface = bestRoute.getInterface(); 1346 if (bestRoute.getGateway().equals(addr)) { 1347 // if there is no better route, add the implied hostroute for our gateway 1348 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1349 } else { 1350 // if we will connect to this through another route, add a direct route 1351 // to it's gateway 1352 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1353 } 1354 } 1355 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1356 try { 1357 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1358 } catch (Exception e) { 1359 // never crash - catch them all 1360 if (DBG) loge("Exception trying to add a route: " + e); 1361 return false; 1362 } 1363 return true; 1364 } 1365 1366 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1367 @Override 1368 public void onUidRulesChanged(int uid, int uidRules) { 1369 // caller is NPMS, since we only register with them 1370 if (LOGD_RULES) { 1371 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1372 } 1373 1374 synchronized (mRulesLock) { 1375 // skip update when we've already applied rules 1376 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1377 if (oldRules == uidRules) return; 1378 1379 mUidRules.put(uid, uidRules); 1380 } 1381 1382 // TODO: notify UID when it has requested targeted updates 1383 } 1384 1385 @Override 1386 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1387 // caller is NPMS, since we only register with them 1388 if (LOGD_RULES) { 1389 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1390 } 1391 1392 synchronized (mRulesLock) { 1393 mMeteredIfaces.clear(); 1394 for (String iface : meteredIfaces) { 1395 mMeteredIfaces.add(iface); 1396 } 1397 } 1398 } 1399 1400 @Override 1401 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1402 // caller is NPMS, since we only register with them 1403 if (LOGD_RULES) { 1404 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1405 } 1406 } 1407 }; 1408 1409 /** 1410 * Require that the caller is either in the same user or has appropriate permission to interact 1411 * across users. 1412 * 1413 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1414 */ 1415 private void enforceCrossUserPermission(int userId) { 1416 if (userId == UserHandle.getCallingUserId()) { 1417 // Not a cross-user call. 1418 return; 1419 } 1420 mContext.enforceCallingOrSelfPermission( 1421 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1422 "ConnectivityService"); 1423 } 1424 1425 private void enforceInternetPermission() { 1426 mContext.enforceCallingOrSelfPermission( 1427 android.Manifest.permission.INTERNET, 1428 "ConnectivityService"); 1429 } 1430 1431 private void enforceAccessPermission() { 1432 mContext.enforceCallingOrSelfPermission( 1433 android.Manifest.permission.ACCESS_NETWORK_STATE, 1434 "ConnectivityService"); 1435 } 1436 1437 private void enforceChangePermission() { 1438 mContext.enforceCallingOrSelfPermission( 1439 android.Manifest.permission.CHANGE_NETWORK_STATE, 1440 "ConnectivityService"); 1441 } 1442 1443 private void enforceTetherAccessPermission() { 1444 mContext.enforceCallingOrSelfPermission( 1445 android.Manifest.permission.ACCESS_NETWORK_STATE, 1446 "ConnectivityService"); 1447 } 1448 1449 private void enforceConnectivityInternalPermission() { 1450 mContext.enforceCallingOrSelfPermission( 1451 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1452 "ConnectivityService"); 1453 } 1454 1455 public void sendConnectedBroadcast(NetworkInfo info) { 1456 enforceConnectivityInternalPermission(); 1457 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1458 } 1459 1460 private void sendInetConditionBroadcast(NetworkInfo info) { 1461 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1462 } 1463 1464 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1465 if (mLockdownTracker != null) { 1466 info = mLockdownTracker.augmentNetworkInfo(info); 1467 } 1468 1469 Intent intent = new Intent(bcastType); 1470 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1471 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1472 if (info.isFailover()) { 1473 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1474 info.setFailover(false); 1475 } 1476 if (info.getReason() != null) { 1477 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1478 } 1479 if (info.getExtraInfo() != null) { 1480 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1481 info.getExtraInfo()); 1482 } 1483 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1484 return intent; 1485 } 1486 1487 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1488 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1489 } 1490 1491 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1492 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1493 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1494 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1495 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1496 final long ident = Binder.clearCallingIdentity(); 1497 try { 1498 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1499 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1500 } finally { 1501 Binder.restoreCallingIdentity(ident); 1502 } 1503 } 1504 1505 private void sendStickyBroadcast(Intent intent) { 1506 synchronized(this) { 1507 if (!mSystemReady) { 1508 mInitialBroadcast = new Intent(intent); 1509 } 1510 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1511 if (DBG) { 1512 log("sendStickyBroadcast: action=" + intent.getAction()); 1513 } 1514 1515 final long ident = Binder.clearCallingIdentity(); 1516 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1517 final IBatteryStats bs = BatteryStatsService.getService(); 1518 try { 1519 NetworkInfo ni = intent.getParcelableExtra( 1520 ConnectivityManager.EXTRA_NETWORK_INFO); 1521 bs.noteConnectivityChanged(intent.getIntExtra( 1522 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1523 ni != null ? ni.getState().toString() : "?"); 1524 } catch (RemoteException e) { 1525 } 1526 } 1527 try { 1528 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1529 } finally { 1530 Binder.restoreCallingIdentity(ident); 1531 } 1532 } 1533 } 1534 1535 void systemReady() { 1536 loadGlobalProxy(); 1537 1538 synchronized(this) { 1539 mSystemReady = true; 1540 if (mInitialBroadcast != null) { 1541 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1542 mInitialBroadcast = null; 1543 } 1544 } 1545 // load the global proxy at startup 1546 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1547 1548 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1549 // for user to unlock device. 1550 if (!updateLockdownVpn()) { 1551 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1552 mContext.registerReceiver(mUserPresentReceiver, filter); 1553 } 1554 1555 // Configure whether mobile data is always on. 1556 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1557 1558 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1559 1560 mPermissionMonitor.startMonitoring(); 1561 } 1562 1563 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1564 @Override 1565 public void onReceive(Context context, Intent intent) { 1566 // Try creating lockdown tracker, since user present usually means 1567 // unlocked keystore. 1568 if (updateLockdownVpn()) { 1569 mContext.unregisterReceiver(this); 1570 } 1571 } 1572 }; 1573 1574 /** 1575 * Setup data activity tracking for the given network. 1576 * 1577 * Every {@code setupDataActivityTracking} should be paired with a 1578 * {@link #removeDataActivityTracking} for cleanup. 1579 */ 1580 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1581 final String iface = networkAgent.linkProperties.getInterfaceName(); 1582 1583 final int timeout; 1584 int type = ConnectivityManager.TYPE_NONE; 1585 1586 if (networkAgent.networkCapabilities.hasTransport( 1587 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1588 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1589 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1590 5); 1591 type = ConnectivityManager.TYPE_MOBILE; 1592 } else if (networkAgent.networkCapabilities.hasTransport( 1593 NetworkCapabilities.TRANSPORT_WIFI)) { 1594 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1595 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1596 15); 1597 type = ConnectivityManager.TYPE_WIFI; 1598 } else { 1599 // do not track any other networks 1600 timeout = 0; 1601 } 1602 1603 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1604 try { 1605 mNetd.addIdleTimer(iface, timeout, type); 1606 } catch (Exception e) { 1607 // You shall not crash! 1608 loge("Exception in setupDataActivityTracking " + e); 1609 } 1610 } 1611 } 1612 1613 /** 1614 * Remove data activity tracking when network disconnects. 1615 */ 1616 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1617 final String iface = networkAgent.linkProperties.getInterfaceName(); 1618 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1619 1620 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1621 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1622 try { 1623 // the call fails silently if no idletimer setup for this interface 1624 mNetd.removeIdleTimer(iface); 1625 } catch (Exception e) { 1626 loge("Exception in removeDataActivityTracking " + e); 1627 } 1628 } 1629 } 1630 1631 /** 1632 * Reads the network specific MTU size from reources. 1633 * and set it on it's iface. 1634 */ 1635 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1636 final String iface = newLp.getInterfaceName(); 1637 final int mtu = newLp.getMtu(); 1638 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1639 if (VDBG) log("identical MTU - not setting"); 1640 return; 1641 } 1642 1643 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1644 loge("Unexpected mtu value: " + mtu + ", " + iface); 1645 return; 1646 } 1647 1648 // Cannot set MTU without interface name 1649 if (TextUtils.isEmpty(iface)) { 1650 loge("Setting MTU size with null iface."); 1651 return; 1652 } 1653 1654 try { 1655 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1656 mNetd.setMtu(iface, mtu); 1657 } catch (Exception e) { 1658 Slog.e(TAG, "exception in setMtu()" + e); 1659 } 1660 } 1661 1662 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1663 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1664 1665 // Overridden for testing purposes to avoid writing to SystemProperties. 1666 @VisibleForTesting 1667 protected int getDefaultTcpRwnd() { 1668 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1669 } 1670 1671 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1672 if (isDefaultNetwork(nai) == false) { 1673 return; 1674 } 1675 1676 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1677 String[] values = null; 1678 if (tcpBufferSizes != null) { 1679 values = tcpBufferSizes.split(","); 1680 } 1681 1682 if (values == null || values.length != 6) { 1683 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1684 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1685 values = tcpBufferSizes.split(","); 1686 } 1687 1688 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1689 1690 try { 1691 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1692 1693 final String prefix = "/sys/kernel/ipv4/tcp_"; 1694 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1695 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1696 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1697 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1698 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1699 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1700 mCurrentTcpBufferSizes = tcpBufferSizes; 1701 } catch (IOException e) { 1702 loge("Can't set TCP buffer sizes:" + e); 1703 } 1704 1705 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1706 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1707 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1708 if (rwndValue != 0) { 1709 SystemProperties.set(sysctlKey, rwndValue.toString()); 1710 } 1711 } 1712 1713 private void flushVmDnsCache() { 1714 /* 1715 * Tell the VMs to toss their DNS caches 1716 */ 1717 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1718 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1719 /* 1720 * Connectivity events can happen before boot has completed ... 1721 */ 1722 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1723 final long ident = Binder.clearCallingIdentity(); 1724 try { 1725 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1726 } finally { 1727 Binder.restoreCallingIdentity(ident); 1728 } 1729 } 1730 1731 @Override 1732 public int getRestoreDefaultNetworkDelay(int networkType) { 1733 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1734 NETWORK_RESTORE_DELAY_PROP_NAME); 1735 if(restoreDefaultNetworkDelayStr != null && 1736 restoreDefaultNetworkDelayStr.length() != 0) { 1737 try { 1738 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1739 } catch (NumberFormatException e) { 1740 } 1741 } 1742 // if the system property isn't set, use the value for the apn type 1743 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1744 1745 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1746 (mNetConfigs[networkType] != null)) { 1747 ret = mNetConfigs[networkType].restoreTime; 1748 } 1749 return ret; 1750 } 1751 1752 private boolean argsContain(String[] args, String target) { 1753 for (String arg : args) { 1754 if (arg.equals(target)) return true; 1755 } 1756 return false; 1757 } 1758 1759 @Override 1760 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1761 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1762 if (mContext.checkCallingOrSelfPermission( 1763 android.Manifest.permission.DUMP) 1764 != PackageManager.PERMISSION_GRANTED) { 1765 pw.println("Permission Denial: can't dump ConnectivityService " + 1766 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1767 Binder.getCallingUid()); 1768 return; 1769 } 1770 1771 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1772 if (argsContain(args, "--diag")) { 1773 final long DIAG_TIME_MS = 5000; 1774 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1775 // Start gathering diagnostic information. 1776 netDiags.add(new NetworkDiagnostics( 1777 nai.network, 1778 new LinkProperties(nai.linkProperties), 1779 DIAG_TIME_MS)); 1780 } 1781 1782 for (NetworkDiagnostics netDiag : netDiags) { 1783 pw.println(); 1784 netDiag.waitForMeasurements(); 1785 netDiag.dump(pw); 1786 } 1787 1788 return; 1789 } 1790 1791 pw.print("NetworkFactories for:"); 1792 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1793 pw.print(" " + nfi.name); 1794 } 1795 pw.println(); 1796 pw.println(); 1797 1798 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1799 pw.print("Active default network: "); 1800 if (defaultNai == null) { 1801 pw.println("none"); 1802 } else { 1803 pw.println(defaultNai.network.netId); 1804 } 1805 pw.println(); 1806 1807 pw.println("Current Networks:"); 1808 pw.increaseIndent(); 1809 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1810 pw.println(nai.toString()); 1811 pw.increaseIndent(); 1812 pw.println("Requests:"); 1813 pw.increaseIndent(); 1814 for (int i = 0; i < nai.networkRequests.size(); i++) { 1815 pw.println(nai.networkRequests.valueAt(i).toString()); 1816 } 1817 pw.decreaseIndent(); 1818 pw.println("Lingered:"); 1819 pw.increaseIndent(); 1820 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1821 pw.decreaseIndent(); 1822 pw.decreaseIndent(); 1823 } 1824 pw.decreaseIndent(); 1825 pw.println(); 1826 1827 pw.println("Network Requests:"); 1828 pw.increaseIndent(); 1829 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1830 pw.println(nri.toString()); 1831 } 1832 pw.println(); 1833 pw.decreaseIndent(); 1834 1835 mLegacyTypeTracker.dump(pw); 1836 1837 synchronized (this) { 1838 pw.print("mNetTransitionWakeLock: currently " + 1839 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1840 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1841 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1842 } else { 1843 pw.println(", last requested never"); 1844 } 1845 } 1846 pw.println(); 1847 1848 mTethering.dump(fd, pw, args); 1849 1850 if (mInetLog != null && mInetLog.size() > 0) { 1851 pw.println(); 1852 pw.println("Inet condition reports:"); 1853 pw.increaseIndent(); 1854 for(int i = 0; i < mInetLog.size(); i++) { 1855 pw.println(mInetLog.get(i)); 1856 } 1857 pw.decreaseIndent(); 1858 } 1859 1860 if (argsContain(args, "--short") == false) { 1861 pw.println(); 1862 synchronized (mValidationLogs) { 1863 pw.println("mValidationLogs (most recent first):"); 1864 for (Pair<Network,ReadOnlyLocalLog> p : mValidationLogs) { 1865 pw.println(p.first); 1866 pw.increaseIndent(); 1867 p.second.dump(fd, pw, args); 1868 pw.decreaseIndent(); 1869 } 1870 } 1871 } 1872 } 1873 1874 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1875 if (nai.network == null) return false; 1876 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1877 if (officialNai != null && officialNai.equals(nai)) return true; 1878 if (officialNai != null || VDBG) { 1879 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1880 " - " + nai); 1881 } 1882 return false; 1883 } 1884 1885 private boolean isRequest(NetworkRequest request) { 1886 return mNetworkRequests.get(request).isRequest; 1887 } 1888 1889 // must be stateless - things change under us. 1890 private class NetworkStateTrackerHandler extends Handler { 1891 public NetworkStateTrackerHandler(Looper looper) { 1892 super(looper); 1893 } 1894 1895 @Override 1896 public void handleMessage(Message msg) { 1897 NetworkInfo info; 1898 switch (msg.what) { 1899 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1900 handleAsyncChannelHalfConnect(msg); 1901 break; 1902 } 1903 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1904 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1905 if (nai != null) nai.asyncChannel.disconnect(); 1906 break; 1907 } 1908 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1909 handleAsyncChannelDisconnected(msg); 1910 break; 1911 } 1912 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1913 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1914 if (nai == null) { 1915 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1916 } else { 1917 final NetworkCapabilities networkCapabilities = 1918 (NetworkCapabilities)msg.obj; 1919 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL) || 1920 networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 1921 Slog.wtf(TAG, "BUG: " + nai + " has stateful capability."); 1922 } 1923 updateCapabilities(nai, networkCapabilities, 1924 NascentState.NOT_JUST_VALIDATED); 1925 } 1926 break; 1927 } 1928 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1929 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1930 if (nai == null) { 1931 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1932 } else { 1933 if (VDBG) { 1934 log("Update of LinkProperties for " + nai.name() + 1935 "; created=" + nai.created); 1936 } 1937 LinkProperties oldLp = nai.linkProperties; 1938 synchronized (nai) { 1939 nai.linkProperties = (LinkProperties)msg.obj; 1940 } 1941 if (nai.created) updateLinkProperties(nai, oldLp); 1942 } 1943 break; 1944 } 1945 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1946 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1947 if (nai == null) { 1948 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1949 break; 1950 } 1951 info = (NetworkInfo) msg.obj; 1952 updateNetworkInfo(nai, info); 1953 break; 1954 } 1955 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1956 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1957 if (nai == null) { 1958 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1959 break; 1960 } 1961 Integer score = (Integer) msg.obj; 1962 if (score != null) updateNetworkScore(nai, score.intValue()); 1963 break; 1964 } 1965 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1966 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1967 if (nai == null) { 1968 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1969 break; 1970 } 1971 try { 1972 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1973 } catch (Exception e) { 1974 // Never crash! 1975 loge("Exception in addVpnUidRanges: " + e); 1976 } 1977 break; 1978 } 1979 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1980 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1981 if (nai == null) { 1982 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1983 break; 1984 } 1985 try { 1986 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1987 } catch (Exception e) { 1988 // Never crash! 1989 loge("Exception in removeVpnUidRanges: " + e); 1990 } 1991 break; 1992 } 1993 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1994 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1995 if (nai == null) { 1996 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1997 break; 1998 } 1999 if (nai.created && !nai.networkMisc.explicitlySelected) { 2000 loge("ERROR: created network explicitly selected."); 2001 } 2002 nai.networkMisc.explicitlySelected = true; 2003 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 2004 break; 2005 } 2006 case NetworkMonitor.EVENT_NETWORK_TESTED: { 2007 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2008 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_TESTED")) { 2009 final boolean valid = 2010 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2011 if (DBG) log(nai.name() + " validation " + (valid ? " passed" : "failed")); 2012 if (valid != nai.lastValidated) { 2013 final int oldScore = nai.getCurrentScore(); 2014 final NascentState nascent = (valid && !nai.everValidated) ? 2015 NascentState.JUST_VALIDATED : NascentState.NOT_JUST_VALIDATED; 2016 nai.lastValidated = valid; 2017 nai.everValidated |= valid; 2018 updateCapabilities(nai, nai.networkCapabilities, nascent); 2019 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2020 if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); 2021 } 2022 updateInetCondition(nai); 2023 // Let the NetworkAgent know the state of its network 2024 nai.asyncChannel.sendMessage( 2025 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2026 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2027 0, null); 2028 } 2029 break; 2030 } 2031 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2032 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2033 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 2034 handleLingerComplete(nai); 2035 } 2036 break; 2037 } 2038 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2039 final int netId = msg.arg2; 2040 final boolean visible = (msg.arg1 != 0); 2041 final NetworkAgentInfo nai; 2042 synchronized (mNetworkForNetId) { 2043 nai = mNetworkForNetId.get(netId); 2044 } 2045 // If captive portal status has changed, update capabilities. 2046 if (nai != null && (visible != nai.lastCaptivePortalDetected)) { 2047 nai.lastCaptivePortalDetected = visible; 2048 nai.everCaptivePortalDetected |= visible; 2049 updateCapabilities(nai, nai.networkCapabilities, 2050 NascentState.NOT_JUST_VALIDATED); 2051 } 2052 if (!visible) { 2053 setProvNotificationVisibleIntent(false, netId, null, 0, null, null, false); 2054 } else { 2055 if (nai == null) { 2056 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2057 break; 2058 } 2059 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2060 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), 2061 (PendingIntent)msg.obj, nai.networkMisc.explicitlySelected); 2062 } 2063 break; 2064 } 2065 } 2066 } 2067 } 2068 2069 // Cancel any lingering so the linger timeout doesn't teardown a network. 2070 // This should be called when a network begins satisfying a NetworkRequest. 2071 // Note: depending on what state the NetworkMonitor is in (e.g., 2072 // if it's awaiting captive portal login, or if validation failed), this 2073 // may trigger a re-evaluation of the network. 2074 private void unlinger(NetworkAgentInfo nai) { 2075 if (VDBG) log("Canceling linger of " + nai.name()); 2076 // If network has never been validated, it cannot have been lingered, so don't bother 2077 // needlessly triggering a re-evaluation. 2078 if (!nai.everValidated) return; 2079 nai.networkLingered.clear(); 2080 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2081 } 2082 2083 private void handleAsyncChannelHalfConnect(Message msg) { 2084 AsyncChannel ac = (AsyncChannel) msg.obj; 2085 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2086 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2087 if (VDBG) log("NetworkFactory connected"); 2088 // A network factory has connected. Send it all current NetworkRequests. 2089 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2090 if (nri.isRequest == false) continue; 2091 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2092 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2093 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2094 } 2095 } else { 2096 loge("Error connecting NetworkFactory"); 2097 mNetworkFactoryInfos.remove(msg.obj); 2098 } 2099 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2100 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2101 if (VDBG) log("NetworkAgent connected"); 2102 // A network agent has requested a connection. Establish the connection. 2103 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2104 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2105 } else { 2106 loge("Error connecting NetworkAgent"); 2107 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2108 if (nai != null) { 2109 final boolean wasDefault = isDefaultNetwork(nai); 2110 synchronized (mNetworkForNetId) { 2111 mNetworkForNetId.remove(nai.network.netId); 2112 mNetIdInUse.delete(nai.network.netId); 2113 } 2114 // Just in case. 2115 mLegacyTypeTracker.remove(nai, wasDefault); 2116 } 2117 } 2118 } 2119 } 2120 2121 private void handleAsyncChannelDisconnected(Message msg) { 2122 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2123 if (nai != null) { 2124 if (DBG) { 2125 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2126 } 2127 // A network agent has disconnected. 2128 // TODO - if we move the logic to the network agent (have them disconnect 2129 // because they lost all their requests or because their score isn't good) 2130 // then they would disconnect organically, report their new state and then 2131 // disconnect the channel. 2132 if (nai.networkInfo.isConnected()) { 2133 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2134 null, null); 2135 } 2136 final boolean wasDefault = isDefaultNetwork(nai); 2137 if (wasDefault) { 2138 mDefaultInetConditionPublished = 0; 2139 } 2140 notifyIfacesChanged(); 2141 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2142 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2143 mNetworkAgentInfos.remove(msg.replyTo); 2144 updateClat(null, nai.linkProperties, nai); 2145 synchronized (mNetworkForNetId) { 2146 // Remove the NetworkAgent, but don't mark the netId as 2147 // available until we've told netd to delete it below. 2148 mNetworkForNetId.remove(nai.network.netId); 2149 } 2150 // Since we've lost the network, go through all the requests that 2151 // it was satisfying and see if any other factory can satisfy them. 2152 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2153 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2154 for (int i = 0; i < nai.networkRequests.size(); i++) { 2155 NetworkRequest request = nai.networkRequests.valueAt(i); 2156 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2157 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2158 if (DBG) { 2159 log("Checking for replacement network to handle request " + request ); 2160 } 2161 mNetworkForRequestId.remove(request.requestId); 2162 sendUpdatedScoreToFactories(request, 0); 2163 NetworkAgentInfo alternative = null; 2164 for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) { 2165 if (existing.satisfies(request) && 2166 (alternative == null || 2167 alternative.getCurrentScore() < existing.getCurrentScore())) { 2168 alternative = existing; 2169 } 2170 } 2171 if (alternative != null) { 2172 if (DBG) log(" found replacement in " + alternative.name()); 2173 if (!toActivate.contains(alternative)) { 2174 toActivate.add(alternative); 2175 } 2176 } 2177 } 2178 } 2179 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2180 removeDataActivityTracking(nai); 2181 notifyLockdownVpn(nai); 2182 requestNetworkTransitionWakelock(nai.name()); 2183 } 2184 mLegacyTypeTracker.remove(nai, wasDefault); 2185 for (NetworkAgentInfo networkToActivate : toActivate) { 2186 unlinger(networkToActivate); 2187 rematchNetworkAndRequests(networkToActivate, NascentState.NOT_JUST_VALIDATED, 2188 ReapUnvalidatedNetworks.DONT_REAP); 2189 } 2190 if (nai.created) { 2191 // Tell netd to clean up the configuration for this network 2192 // (routing rules, DNS, etc). 2193 // This may be slow as it requires a lot of netd shelling out to ip and 2194 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2195 // after we've rematched networks with requests which should make a potential 2196 // fallback network the default or requested a new network from the 2197 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2198 // long time. 2199 try { 2200 mNetd.removeNetwork(nai.network.netId); 2201 } catch (Exception e) { 2202 loge("Exception removing network: " + e); 2203 } 2204 } 2205 synchronized (mNetworkForNetId) { 2206 mNetIdInUse.delete(nai.network.netId); 2207 } 2208 } else { 2209 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2210 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2211 } 2212 } 2213 2214 // If this method proves to be too slow then we can maintain a separate 2215 // pendingIntent => NetworkRequestInfo map. 2216 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2217 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2218 Intent intent = pendingIntent.getIntent(); 2219 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2220 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2221 if (existingPendingIntent != null && 2222 existingPendingIntent.getIntent().filterEquals(intent)) { 2223 return entry.getValue(); 2224 } 2225 } 2226 return null; 2227 } 2228 2229 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2230 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2231 2232 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2233 if (existingRequest != null) { // remove the existing request. 2234 if (DBG) log("Replacing " + existingRequest.request + " with " 2235 + nri.request + " because their intents matched."); 2236 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2237 } 2238 handleRegisterNetworkRequest(nri); 2239 } 2240 2241 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2242 mNetworkRequests.put(nri.request, nri); 2243 2244 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2245 2246 // Check for the best currently alive network that satisfies this request 2247 NetworkAgentInfo bestNetwork = null; 2248 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2249 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2250 if (network.satisfies(nri.request)) { 2251 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2252 if (!nri.isRequest) { 2253 // Not setting bestNetwork here as a listening NetworkRequest may be 2254 // satisfied by multiple Networks. Instead the request is added to 2255 // each satisfying Network and notified about each. 2256 if (!network.addRequest(nri.request)) { 2257 Slog.wtf(TAG, "BUG: " + network.name() + " already has " + nri.request); 2258 } 2259 notifyNetworkCallback(network, nri); 2260 } else if (bestNetwork == null || 2261 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2262 bestNetwork = network; 2263 } 2264 } 2265 } 2266 if (bestNetwork != null) { 2267 if (DBG) log("using " + bestNetwork.name()); 2268 unlinger(bestNetwork); 2269 if (!bestNetwork.addRequest(nri.request)) { 2270 Slog.wtf(TAG, "BUG: " + bestNetwork.name() + " already has " + nri.request); 2271 } 2272 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2273 notifyNetworkCallback(bestNetwork, nri); 2274 if (nri.request.legacyType != TYPE_NONE) { 2275 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2276 } 2277 } 2278 2279 if (nri.isRequest) { 2280 if (DBG) log("sending new NetworkRequest to factories"); 2281 final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore(); 2282 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2283 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2284 0, nri.request); 2285 } 2286 } 2287 } 2288 2289 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2290 int callingUid) { 2291 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2292 if (nri != null) { 2293 handleReleaseNetworkRequest(nri.request, callingUid); 2294 } 2295 } 2296 2297 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2298 // For validated Networks this is simply whether it is satsifying any NetworkRequests. 2299 // For unvalidated Networks this is whether it is satsifying any NetworkRequests or 2300 // were it to become validated, would it have a chance of satisfying any NetworkRequests. 2301 private boolean unneeded(NetworkAgentInfo nai) { 2302 if (!nai.created || nai.isVPN()) return false; 2303 boolean unneeded = true; 2304 if (nai.everValidated) { 2305 for (int i = 0; i < nai.networkRequests.size() && unneeded; i++) { 2306 final NetworkRequest nr = nai.networkRequests.valueAt(i); 2307 try { 2308 if (isRequest(nr)) unneeded = false; 2309 } catch (Exception e) { 2310 loge("Request " + nr + " not found in mNetworkRequests."); 2311 loge(" it came from request list of " + nai.name()); 2312 } 2313 } 2314 } else { 2315 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2316 // If this Network is already the highest scoring Network for a request, or if 2317 // there is hope for it to become one if it validated, then it is needed. 2318 if (nri.isRequest && nai.satisfies(nri.request) && 2319 (nai.networkRequests.get(nri.request.requestId) != null || 2320 // Note that this catches two important cases: 2321 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2322 // is currently satisfying the request. This is desirable when 2323 // cellular ends up validating but WiFi does not. 2324 // 2. Unvalidated WiFi will not be reaped when validated cellular 2325 // is currently satsifying the request. This is desirable when 2326 // WiFi ends up validating and out scoring cellular. 2327 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2328 nai.getCurrentScoreAsValidated())) { 2329 unneeded = false; 2330 break; 2331 } 2332 } 2333 } 2334 return unneeded; 2335 } 2336 2337 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2338 NetworkRequestInfo nri = mNetworkRequests.get(request); 2339 if (nri != null) { 2340 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2341 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2342 return; 2343 } 2344 if (DBG) log("releasing NetworkRequest " + request); 2345 nri.unlinkDeathRecipient(); 2346 mNetworkRequests.remove(request); 2347 if (nri.isRequest) { 2348 // Find all networks that are satisfying this request and remove the request 2349 // from their request lists. 2350 // TODO - it's my understanding that for a request there is only a single 2351 // network satisfying it, so this loop is wasteful 2352 boolean wasKept = false; 2353 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2354 if (nai.networkRequests.get(nri.request.requestId) != null) { 2355 nai.networkRequests.remove(nri.request.requestId); 2356 if (DBG) { 2357 log(" Removing from current network " + nai.name() + 2358 ", leaving " + nai.networkRequests.size() + 2359 " requests."); 2360 } 2361 if (unneeded(nai)) { 2362 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2363 teardownUnneededNetwork(nai); 2364 } else { 2365 // suspect there should only be one pass through here 2366 // but if any were kept do the check below 2367 wasKept |= true; 2368 } 2369 } 2370 } 2371 2372 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2373 if (nai != null) { 2374 mNetworkForRequestId.remove(nri.request.requestId); 2375 } 2376 // Maintain the illusion. When this request arrived, we might have pretended 2377 // that a network connected to serve it, even though the network was already 2378 // connected. Now that this request has gone away, we might have to pretend 2379 // that the network disconnected. LegacyTypeTracker will generate that 2380 // phantom disconnect for this type. 2381 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2382 boolean doRemove = true; 2383 if (wasKept) { 2384 // check if any of the remaining requests for this network are for the 2385 // same legacy type - if so, don't remove the nai 2386 for (int i = 0; i < nai.networkRequests.size(); i++) { 2387 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2388 if (otherRequest.legacyType == nri.request.legacyType && 2389 isRequest(otherRequest)) { 2390 if (DBG) log(" still have other legacy request - leaving"); 2391 doRemove = false; 2392 } 2393 } 2394 } 2395 2396 if (doRemove) { 2397 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2398 } 2399 } 2400 2401 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2402 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2403 nri.request); 2404 } 2405 } else { 2406 // listens don't have a singular affectedNetwork. Check all networks to see 2407 // if this listen request applies and remove it. 2408 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2409 nai.networkRequests.remove(nri.request.requestId); 2410 } 2411 } 2412 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2413 } 2414 } 2415 2416 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2417 enforceConnectivityInternalPermission(); 2418 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2419 accept ? 1 : 0, always ? 1: 0, network)); 2420 } 2421 2422 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2423 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2424 " accept=" + accept + " always=" + always); 2425 2426 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2427 if (nai == null) { 2428 // Nothing to do. 2429 return; 2430 } 2431 2432 if (nai.everValidated) { 2433 // The network validated while the dialog box was up. Take no action. 2434 return; 2435 } 2436 2437 if (!nai.networkMisc.explicitlySelected) { 2438 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2439 } 2440 2441 if (accept != nai.networkMisc.acceptUnvalidated) { 2442 int oldScore = nai.getCurrentScore(); 2443 nai.networkMisc.acceptUnvalidated = accept; 2444 rematchAllNetworksAndRequests(nai, oldScore, NascentState.NOT_JUST_VALIDATED); 2445 sendUpdatedScoreToFactories(nai); 2446 } 2447 2448 if (always) { 2449 nai.asyncChannel.sendMessage( 2450 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2451 } 2452 2453 if (!accept) { 2454 // Tell the NetworkAgent that the network does not have Internet access (because that's 2455 // what we just told the user). This will hint to Wi-Fi not to autojoin this network in 2456 // the future. We do this now because NetworkMonitor might not yet have finished 2457 // validating and thus we might not yet have received an EVENT_NETWORK_TESTED. 2458 nai.asyncChannel.sendMessage(NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2459 NetworkAgent.INVALID_NETWORK, 0, null); 2460 // TODO: Tear the network down once we have determined how to tell WifiStateMachine not 2461 // to reconnect to it immediately. http://b/20739299 2462 } 2463 2464 } 2465 2466 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2467 if (DBG) log("scheduleUnvalidatedPrompt " + nai.network); 2468 mHandler.sendMessageDelayed( 2469 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2470 PROMPT_UNVALIDATED_DELAY_MS); 2471 } 2472 2473 private void handlePromptUnvalidated(Network network) { 2474 if (DBG) log("handlePromptUnvalidated " + network); 2475 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2476 2477 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2478 // we haven't already been told to switch to it regardless of whether it validated or not. 2479 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2480 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2481 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2482 return; 2483 } 2484 2485 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2486 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2487 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2488 intent.setClassName("com.android.settings", 2489 "com.android.settings.wifi.WifiNoInternetDialog"); 2490 2491 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2492 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2493 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2494 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent, true); 2495 } 2496 2497 private class InternalHandler extends Handler { 2498 public InternalHandler(Looper looper) { 2499 super(looper); 2500 } 2501 2502 @Override 2503 public void handleMessage(Message msg) { 2504 switch (msg.what) { 2505 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2506 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2507 String causedBy = null; 2508 synchronized (ConnectivityService.this) { 2509 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2510 mNetTransitionWakeLock.isHeld()) { 2511 mNetTransitionWakeLock.release(); 2512 causedBy = mNetTransitionWakeLockCausedBy; 2513 } else { 2514 break; 2515 } 2516 } 2517 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2518 log("Failed to find a new network - expiring NetTransition Wakelock"); 2519 } else { 2520 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2521 " cleared because we found a replacement network"); 2522 } 2523 break; 2524 } 2525 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2526 handleDeprecatedGlobalHttpProxy(); 2527 break; 2528 } 2529 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2530 Intent intent = (Intent)msg.obj; 2531 sendStickyBroadcast(intent); 2532 break; 2533 } 2534 case EVENT_PROXY_HAS_CHANGED: { 2535 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2536 break; 2537 } 2538 case EVENT_REGISTER_NETWORK_FACTORY: { 2539 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2540 break; 2541 } 2542 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2543 handleUnregisterNetworkFactory((Messenger)msg.obj); 2544 break; 2545 } 2546 case EVENT_REGISTER_NETWORK_AGENT: { 2547 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2548 break; 2549 } 2550 case EVENT_REGISTER_NETWORK_REQUEST: 2551 case EVENT_REGISTER_NETWORK_LISTENER: { 2552 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2553 break; 2554 } 2555 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2556 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2557 handleRegisterNetworkRequestWithIntent(msg); 2558 break; 2559 } 2560 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2561 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2562 break; 2563 } 2564 case EVENT_RELEASE_NETWORK_REQUEST: { 2565 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2566 break; 2567 } 2568 case EVENT_SET_ACCEPT_UNVALIDATED: { 2569 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2570 break; 2571 } 2572 case EVENT_PROMPT_UNVALIDATED: { 2573 handlePromptUnvalidated((Network) msg.obj); 2574 break; 2575 } 2576 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2577 handleMobileDataAlwaysOn(); 2578 break; 2579 } 2580 case EVENT_SYSTEM_READY: { 2581 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2582 nai.networkMonitor.systemReady = true; 2583 } 2584 break; 2585 } 2586 } 2587 } 2588 } 2589 2590 // javadoc from interface 2591 public int tether(String iface) { 2592 ConnectivityManager.enforceTetherChangePermission(mContext); 2593 if (isTetheringSupported()) { 2594 return mTethering.tether(iface); 2595 } else { 2596 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2597 } 2598 } 2599 2600 // javadoc from interface 2601 public int untether(String iface) { 2602 ConnectivityManager.enforceTetherChangePermission(mContext); 2603 2604 if (isTetheringSupported()) { 2605 return mTethering.untether(iface); 2606 } else { 2607 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2608 } 2609 } 2610 2611 // javadoc from interface 2612 public int getLastTetherError(String iface) { 2613 enforceTetherAccessPermission(); 2614 2615 if (isTetheringSupported()) { 2616 return mTethering.getLastTetherError(iface); 2617 } else { 2618 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2619 } 2620 } 2621 2622 // TODO - proper iface API for selection by property, inspection, etc 2623 public String[] getTetherableUsbRegexs() { 2624 enforceTetherAccessPermission(); 2625 if (isTetheringSupported()) { 2626 return mTethering.getTetherableUsbRegexs(); 2627 } else { 2628 return new String[0]; 2629 } 2630 } 2631 2632 public String[] getTetherableWifiRegexs() { 2633 enforceTetherAccessPermission(); 2634 if (isTetheringSupported()) { 2635 return mTethering.getTetherableWifiRegexs(); 2636 } else { 2637 return new String[0]; 2638 } 2639 } 2640 2641 public String[] getTetherableBluetoothRegexs() { 2642 enforceTetherAccessPermission(); 2643 if (isTetheringSupported()) { 2644 return mTethering.getTetherableBluetoothRegexs(); 2645 } else { 2646 return new String[0]; 2647 } 2648 } 2649 2650 public int setUsbTethering(boolean enable) { 2651 ConnectivityManager.enforceTetherChangePermission(mContext); 2652 if (isTetheringSupported()) { 2653 return mTethering.setUsbTethering(enable); 2654 } else { 2655 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2656 } 2657 } 2658 2659 // TODO - move iface listing, queries, etc to new module 2660 // javadoc from interface 2661 public String[] getTetherableIfaces() { 2662 enforceTetherAccessPermission(); 2663 return mTethering.getTetherableIfaces(); 2664 } 2665 2666 public String[] getTetheredIfaces() { 2667 enforceTetherAccessPermission(); 2668 return mTethering.getTetheredIfaces(); 2669 } 2670 2671 public String[] getTetheringErroredIfaces() { 2672 enforceTetherAccessPermission(); 2673 return mTethering.getErroredIfaces(); 2674 } 2675 2676 public String[] getTetheredDhcpRanges() { 2677 enforceConnectivityInternalPermission(); 2678 return mTethering.getTetheredDhcpRanges(); 2679 } 2680 2681 // if ro.tether.denied = true we default to no tethering 2682 // gservices could set the secure setting to 1 though to enable it on a build where it 2683 // had previously been turned off. 2684 public boolean isTetheringSupported() { 2685 enforceTetherAccessPermission(); 2686 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2687 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2688 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2689 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2690 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2691 mTethering.getTetherableWifiRegexs().length != 0 || 2692 mTethering.getTetherableBluetoothRegexs().length != 0) && 2693 mTethering.getUpstreamIfaceTypes().length != 0); 2694 } 2695 2696 // Called when we lose the default network and have no replacement yet. 2697 // This will automatically be cleared after X seconds or a new default network 2698 // becomes CONNECTED, whichever happens first. The timer is started by the 2699 // first caller and not restarted by subsequent callers. 2700 private void requestNetworkTransitionWakelock(String forWhom) { 2701 int serialNum = 0; 2702 synchronized (this) { 2703 if (mNetTransitionWakeLock.isHeld()) return; 2704 serialNum = ++mNetTransitionWakeLockSerialNumber; 2705 mNetTransitionWakeLock.acquire(); 2706 mNetTransitionWakeLockCausedBy = forWhom; 2707 } 2708 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2709 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2710 mNetTransitionWakeLockTimeout); 2711 return; 2712 } 2713 2714 // 100 percent is full good, 0 is full bad. 2715 public void reportInetCondition(int networkType, int percentage) { 2716 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2717 if (nai == null) return; 2718 reportNetworkConnectivity(nai.network, percentage > 50); 2719 } 2720 2721 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2722 enforceAccessPermission(); 2723 enforceInternetPermission(); 2724 2725 NetworkAgentInfo nai; 2726 if (network == null) { 2727 nai = getDefaultNetwork(); 2728 } else { 2729 nai = getNetworkAgentInfoForNetwork(network); 2730 } 2731 if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || 2732 nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { 2733 return; 2734 } 2735 // Revalidate if the app report does not match our current validated state. 2736 if (hasConnectivity == nai.lastValidated) return; 2737 final int uid = Binder.getCallingUid(); 2738 if (DBG) { 2739 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2740 ") by " + uid); 2741 } 2742 synchronized (nai) { 2743 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2744 // which isn't meant to work on uncreated networks. 2745 if (!nai.created) return; 2746 2747 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2748 2749 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2750 } 2751 } 2752 2753 public void captivePortalAppResponse(Network network, int response, String actionToken) { 2754 if (response == ConnectivityManager.CAPTIVE_PORTAL_APP_RETURN_WANTED_AS_IS) { 2755 enforceConnectivityInternalPermission(); 2756 } 2757 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2758 if (nai == null) return; 2759 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_CAPTIVE_PORTAL_APP_FINISHED, response, 0, 2760 actionToken); 2761 } 2762 2763 private ProxyInfo getDefaultProxy() { 2764 // this information is already available as a world read/writable jvm property 2765 // so this API change wouldn't have a benifit. It also breaks the passing 2766 // of proxy info to all the JVMs. 2767 // enforceAccessPermission(); 2768 synchronized (mProxyLock) { 2769 ProxyInfo ret = mGlobalProxy; 2770 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2771 return ret; 2772 } 2773 } 2774 2775 public ProxyInfo getProxyForNetwork(Network network) { 2776 if (network == null) return getDefaultProxy(); 2777 final ProxyInfo globalProxy = getGlobalProxy(); 2778 if (globalProxy != null) return globalProxy; 2779 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2780 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2781 // caller may not have. 2782 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2783 if (nai == null) return null; 2784 synchronized (nai) { 2785 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2786 if (proxyInfo == null) return null; 2787 return new ProxyInfo(proxyInfo); 2788 } 2789 } 2790 2791 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2792 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2793 // proxy is null then there is no proxy in place). 2794 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2795 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2796 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2797 proxy = null; 2798 } 2799 return proxy; 2800 } 2801 2802 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2803 // better for determining if a new proxy broadcast is necessary: 2804 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2805 // avoid unnecessary broadcasts. 2806 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2807 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2808 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2809 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2810 // all set. 2811 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2812 a = canonicalizeProxyInfo(a); 2813 b = canonicalizeProxyInfo(b); 2814 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2815 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2816 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2817 } 2818 2819 public void setGlobalProxy(ProxyInfo proxyProperties) { 2820 enforceConnectivityInternalPermission(); 2821 2822 synchronized (mProxyLock) { 2823 if (proxyProperties == mGlobalProxy) return; 2824 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2825 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2826 2827 String host = ""; 2828 int port = 0; 2829 String exclList = ""; 2830 String pacFileUrl = ""; 2831 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2832 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2833 if (!proxyProperties.isValid()) { 2834 if (DBG) 2835 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2836 return; 2837 } 2838 mGlobalProxy = new ProxyInfo(proxyProperties); 2839 host = mGlobalProxy.getHost(); 2840 port = mGlobalProxy.getPort(); 2841 exclList = mGlobalProxy.getExclusionListAsString(); 2842 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2843 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2844 } 2845 } else { 2846 mGlobalProxy = null; 2847 } 2848 ContentResolver res = mContext.getContentResolver(); 2849 final long token = Binder.clearCallingIdentity(); 2850 try { 2851 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2852 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2853 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2854 exclList); 2855 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2856 } finally { 2857 Binder.restoreCallingIdentity(token); 2858 } 2859 2860 if (mGlobalProxy == null) { 2861 proxyProperties = mDefaultProxy; 2862 } 2863 sendProxyBroadcast(proxyProperties); 2864 } 2865 } 2866 2867 private void loadGlobalProxy() { 2868 ContentResolver res = mContext.getContentResolver(); 2869 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2870 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2871 String exclList = Settings.Global.getString(res, 2872 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2873 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2874 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2875 ProxyInfo proxyProperties; 2876 if (!TextUtils.isEmpty(pacFileUrl)) { 2877 proxyProperties = new ProxyInfo(pacFileUrl); 2878 } else { 2879 proxyProperties = new ProxyInfo(host, port, exclList); 2880 } 2881 if (!proxyProperties.isValid()) { 2882 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2883 return; 2884 } 2885 2886 synchronized (mProxyLock) { 2887 mGlobalProxy = proxyProperties; 2888 } 2889 } 2890 } 2891 2892 public ProxyInfo getGlobalProxy() { 2893 // this information is already available as a world read/writable jvm property 2894 // so this API change wouldn't have a benifit. It also breaks the passing 2895 // of proxy info to all the JVMs. 2896 // enforceAccessPermission(); 2897 synchronized (mProxyLock) { 2898 return mGlobalProxy; 2899 } 2900 } 2901 2902 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2903 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2904 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2905 proxy = null; 2906 } 2907 synchronized (mProxyLock) { 2908 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2909 if (mDefaultProxy == proxy) return; // catches repeated nulls 2910 if (proxy != null && !proxy.isValid()) { 2911 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2912 return; 2913 } 2914 2915 // This call could be coming from the PacManager, containing the port of the local 2916 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2917 // global (to get the correct local port), and send a broadcast. 2918 // TODO: Switch PacManager to have its own message to send back rather than 2919 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2920 if ((mGlobalProxy != null) && (proxy != null) 2921 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2922 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2923 mGlobalProxy = proxy; 2924 sendProxyBroadcast(mGlobalProxy); 2925 return; 2926 } 2927 mDefaultProxy = proxy; 2928 2929 if (mGlobalProxy != null) return; 2930 if (!mDefaultProxyDisabled) { 2931 sendProxyBroadcast(proxy); 2932 } 2933 } 2934 } 2935 2936 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2937 // This method gets called when any network changes proxy, but the broadcast only ever contains 2938 // the default proxy (even if it hasn't changed). 2939 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2940 // world where an app might be bound to a non-default network. 2941 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2942 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2943 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2944 2945 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2946 sendProxyBroadcast(getDefaultProxy()); 2947 } 2948 } 2949 2950 private void handleDeprecatedGlobalHttpProxy() { 2951 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2952 Settings.Global.HTTP_PROXY); 2953 if (!TextUtils.isEmpty(proxy)) { 2954 String data[] = proxy.split(":"); 2955 if (data.length == 0) { 2956 return; 2957 } 2958 2959 String proxyHost = data[0]; 2960 int proxyPort = 8080; 2961 if (data.length > 1) { 2962 try { 2963 proxyPort = Integer.parseInt(data[1]); 2964 } catch (NumberFormatException e) { 2965 return; 2966 } 2967 } 2968 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2969 setGlobalProxy(p); 2970 } 2971 } 2972 2973 private void sendProxyBroadcast(ProxyInfo proxy) { 2974 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2975 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2976 if (DBG) log("sending Proxy Broadcast for " + proxy); 2977 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2978 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2979 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2980 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2981 final long ident = Binder.clearCallingIdentity(); 2982 try { 2983 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2984 } finally { 2985 Binder.restoreCallingIdentity(ident); 2986 } 2987 } 2988 2989 private static class SettingsObserver extends ContentObserver { 2990 final private HashMap<Uri, Integer> mUriEventMap; 2991 final private Context mContext; 2992 final private Handler mHandler; 2993 2994 SettingsObserver(Context context, Handler handler) { 2995 super(null); 2996 mUriEventMap = new HashMap<Uri, Integer>(); 2997 mContext = context; 2998 mHandler = handler; 2999 } 3000 3001 void observe(Uri uri, int what) { 3002 mUriEventMap.put(uri, what); 3003 final ContentResolver resolver = mContext.getContentResolver(); 3004 resolver.registerContentObserver(uri, false, this); 3005 } 3006 3007 @Override 3008 public void onChange(boolean selfChange) { 3009 Slog.wtf(TAG, "Should never be reached."); 3010 } 3011 3012 @Override 3013 public void onChange(boolean selfChange, Uri uri) { 3014 final Integer what = mUriEventMap.get(uri); 3015 if (what != null) { 3016 mHandler.obtainMessage(what.intValue()).sendToTarget(); 3017 } else { 3018 loge("No matching event to send for URI=" + uri); 3019 } 3020 } 3021 } 3022 3023 private static void log(String s) { 3024 Slog.d(TAG, s); 3025 } 3026 3027 private static void loge(String s) { 3028 Slog.e(TAG, s); 3029 } 3030 3031 private static <T> T checkNotNull(T value, String message) { 3032 if (value == null) { 3033 throw new NullPointerException(message); 3034 } 3035 return value; 3036 } 3037 3038 /** 3039 * Prepare for a VPN application. 3040 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3041 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3042 * 3043 * @param oldPackage Package name of the application which currently controls VPN, which will 3044 * be replaced. If there is no such application, this should should either be 3045 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3046 * @param newPackage Package name of the application which should gain control of VPN, or 3047 * {@code null} to disable. 3048 * @param userId User for whom to prepare the new VPN. 3049 * 3050 * @hide 3051 */ 3052 @Override 3053 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3054 int userId) { 3055 enforceCrossUserPermission(userId); 3056 throwIfLockdownEnabled(); 3057 3058 synchronized(mVpns) { 3059 Vpn vpn = mVpns.get(userId); 3060 if (vpn != null) { 3061 return vpn.prepare(oldPackage, newPackage); 3062 } else { 3063 return false; 3064 } 3065 } 3066 } 3067 3068 /** 3069 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3070 * This method is used by system-privileged apps. 3071 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3072 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3073 * 3074 * @param packageName The package for which authorization state should change. 3075 * @param userId User for whom {@code packageName} is installed. 3076 * @param authorized {@code true} if this app should be able to start a VPN connection without 3077 * explicit user approval, {@code false} if not. 3078 * 3079 * @hide 3080 */ 3081 @Override 3082 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3083 enforceCrossUserPermission(userId); 3084 3085 synchronized(mVpns) { 3086 Vpn vpn = mVpns.get(userId); 3087 if (vpn != null) { 3088 vpn.setPackageAuthorization(packageName, authorized); 3089 } 3090 } 3091 } 3092 3093 /** 3094 * Configure a TUN interface and return its file descriptor. Parameters 3095 * are encoded and opaque to this class. This method is used by VpnBuilder 3096 * and not available in ConnectivityManager. Permissions are checked in 3097 * Vpn class. 3098 * @hide 3099 */ 3100 @Override 3101 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3102 throwIfLockdownEnabled(); 3103 int user = UserHandle.getUserId(Binder.getCallingUid()); 3104 synchronized(mVpns) { 3105 return mVpns.get(user).establish(config); 3106 } 3107 } 3108 3109 /** 3110 * Start legacy VPN, controlling native daemons as needed. Creates a 3111 * secondary thread to perform connection work, returning quickly. 3112 */ 3113 @Override 3114 public void startLegacyVpn(VpnProfile profile) { 3115 throwIfLockdownEnabled(); 3116 final LinkProperties egress = getActiveLinkProperties(); 3117 if (egress == null) { 3118 throw new IllegalStateException("Missing active network connection"); 3119 } 3120 int user = UserHandle.getUserId(Binder.getCallingUid()); 3121 synchronized(mVpns) { 3122 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3123 } 3124 } 3125 3126 /** 3127 * Return the information of the ongoing legacy VPN. This method is used 3128 * by VpnSettings and not available in ConnectivityManager. Permissions 3129 * are checked in Vpn class. 3130 */ 3131 @Override 3132 public LegacyVpnInfo getLegacyVpnInfo() { 3133 throwIfLockdownEnabled(); 3134 int user = UserHandle.getUserId(Binder.getCallingUid()); 3135 synchronized(mVpns) { 3136 return mVpns.get(user).getLegacyVpnInfo(); 3137 } 3138 } 3139 3140 /** 3141 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3142 * and not available in ConnectivityManager. 3143 */ 3144 @Override 3145 public VpnInfo[] getAllVpnInfo() { 3146 enforceConnectivityInternalPermission(); 3147 if (mLockdownEnabled) { 3148 return new VpnInfo[0]; 3149 } 3150 3151 synchronized(mVpns) { 3152 List<VpnInfo> infoList = new ArrayList<>(); 3153 for (int i = 0; i < mVpns.size(); i++) { 3154 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3155 if (info != null) { 3156 infoList.add(info); 3157 } 3158 } 3159 return infoList.toArray(new VpnInfo[infoList.size()]); 3160 } 3161 } 3162 3163 /** 3164 * @return VPN information for accounting, or null if we can't retrieve all required 3165 * information, e.g primary underlying iface. 3166 */ 3167 @Nullable 3168 private VpnInfo createVpnInfo(Vpn vpn) { 3169 VpnInfo info = vpn.getVpnInfo(); 3170 if (info == null) { 3171 return null; 3172 } 3173 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3174 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3175 // the underlyingNetworks list. 3176 if (underlyingNetworks == null) { 3177 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3178 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3179 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3180 } 3181 } else if (underlyingNetworks.length > 0) { 3182 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3183 if (linkProperties != null) { 3184 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3185 } 3186 } 3187 return info.primaryUnderlyingIface == null ? null : info; 3188 } 3189 3190 /** 3191 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3192 * VpnDialogs and not available in ConnectivityManager. 3193 * Permissions are checked in Vpn class. 3194 * @hide 3195 */ 3196 @Override 3197 public VpnConfig getVpnConfig(int userId) { 3198 enforceCrossUserPermission(userId); 3199 synchronized(mVpns) { 3200 Vpn vpn = mVpns.get(userId); 3201 if (vpn != null) { 3202 return vpn.getVpnConfig(); 3203 } else { 3204 return null; 3205 } 3206 } 3207 } 3208 3209 @Override 3210 public boolean updateLockdownVpn() { 3211 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3212 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3213 return false; 3214 } 3215 3216 // Tear down existing lockdown if profile was removed 3217 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3218 if (mLockdownEnabled) { 3219 if (!mKeyStore.isUnlocked()) { 3220 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3221 return false; 3222 } 3223 3224 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3225 final VpnProfile profile = VpnProfile.decode( 3226 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3227 int user = UserHandle.getUserId(Binder.getCallingUid()); 3228 synchronized(mVpns) { 3229 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3230 profile)); 3231 } 3232 } else { 3233 setLockdownTracker(null); 3234 } 3235 3236 return true; 3237 } 3238 3239 /** 3240 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3241 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3242 */ 3243 private void setLockdownTracker(LockdownVpnTracker tracker) { 3244 // Shutdown any existing tracker 3245 final LockdownVpnTracker existing = mLockdownTracker; 3246 mLockdownTracker = null; 3247 if (existing != null) { 3248 existing.shutdown(); 3249 } 3250 3251 try { 3252 if (tracker != null) { 3253 mNetd.setFirewallEnabled(true); 3254 mNetd.setFirewallInterfaceRule("lo", true); 3255 mLockdownTracker = tracker; 3256 mLockdownTracker.init(); 3257 } else { 3258 mNetd.setFirewallEnabled(false); 3259 } 3260 } catch (RemoteException e) { 3261 // ignored; NMS lives inside system_server 3262 } 3263 } 3264 3265 private void throwIfLockdownEnabled() { 3266 if (mLockdownEnabled) { 3267 throw new IllegalStateException("Unavailable in lockdown mode"); 3268 } 3269 } 3270 3271 @Override 3272 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3273 // TODO: Remove? Any reason to trigger a provisioning check? 3274 return -1; 3275 } 3276 3277 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3278 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3279 3280 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3281 if (DBG) { 3282 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3283 + " action=" + action); 3284 } 3285 Intent intent = new Intent(action); 3286 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3287 // Concatenate the range of types onto the range of NetIDs. 3288 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3289 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3290 networkType, null, pendingIntent, false); 3291 } 3292 3293 /** 3294 * Show or hide network provisioning notifications. 3295 * 3296 * We use notifications for two purposes: to notify that a network requires sign in 3297 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3298 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3299 * particular network we can display the notification type that was most recently requested. 3300 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3301 * might first display NO_INTERNET, and then when the captive portal check completes, display 3302 * SIGN_IN. 3303 * 3304 * @param id an identifier that uniquely identifies this notification. This must match 3305 * between show and hide calls. We use the NetID value but for legacy callers 3306 * we concatenate the range of types with the range of NetIDs. 3307 */ 3308 private void setProvNotificationVisibleIntent(boolean visible, int id, 3309 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent, 3310 boolean highPriority) { 3311 if (DBG) { 3312 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3313 + " networkType=" + getNetworkTypeName(networkType) 3314 + " extraInfo=" + extraInfo + " highPriority=" + highPriority); 3315 } 3316 3317 Resources r = Resources.getSystem(); 3318 NotificationManager notificationManager = (NotificationManager) mContext 3319 .getSystemService(Context.NOTIFICATION_SERVICE); 3320 3321 if (visible) { 3322 CharSequence title; 3323 CharSequence details; 3324 int icon; 3325 if (notifyType == NotificationType.NO_INTERNET && 3326 networkType == ConnectivityManager.TYPE_WIFI) { 3327 title = r.getString(R.string.wifi_no_internet, 0); 3328 details = r.getString(R.string.wifi_no_internet_detailed); 3329 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3330 } else if (notifyType == NotificationType.SIGN_IN) { 3331 switch (networkType) { 3332 case ConnectivityManager.TYPE_WIFI: 3333 title = r.getString(R.string.wifi_available_sign_in, 0); 3334 details = r.getString(R.string.network_available_sign_in_detailed, 3335 extraInfo); 3336 icon = R.drawable.stat_notify_wifi_in_range; 3337 break; 3338 case ConnectivityManager.TYPE_MOBILE: 3339 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3340 title = r.getString(R.string.network_available_sign_in, 0); 3341 // TODO: Change this to pull from NetworkInfo once a printable 3342 // name has been added to it 3343 details = mTelephonyManager.getNetworkOperatorName(); 3344 icon = R.drawable.stat_notify_rssi_in_range; 3345 break; 3346 default: 3347 title = r.getString(R.string.network_available_sign_in, 0); 3348 details = r.getString(R.string.network_available_sign_in_detailed, 3349 extraInfo); 3350 icon = R.drawable.stat_notify_rssi_in_range; 3351 break; 3352 } 3353 } else { 3354 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3355 + getNetworkTypeName(networkType)); 3356 return; 3357 } 3358 3359 Notification notification = new Notification.Builder(mContext) 3360 .setWhen(0) 3361 .setSmallIcon(icon) 3362 .setAutoCancel(true) 3363 .setTicker(title) 3364 .setColor(mContext.getColor( 3365 com.android.internal.R.color.system_notification_accent_color)) 3366 .setContentTitle(title) 3367 .setContentText(details) 3368 .setContentIntent(intent) 3369 .setLocalOnly(true) 3370 .setPriority(highPriority ? 3371 Notification.PRIORITY_HIGH : 3372 Notification.PRIORITY_DEFAULT) 3373 .setDefaults(Notification.DEFAULT_ALL) 3374 .setOnlyAlertOnce(true) 3375 .build(); 3376 3377 try { 3378 notificationManager.notify(NOTIFICATION_ID, id, notification); 3379 } catch (NullPointerException npe) { 3380 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3381 npe.printStackTrace(); 3382 } 3383 } else { 3384 try { 3385 notificationManager.cancel(NOTIFICATION_ID, id); 3386 } catch (NullPointerException npe) { 3387 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3388 npe.printStackTrace(); 3389 } 3390 } 3391 } 3392 3393 /** Location to an updatable file listing carrier provisioning urls. 3394 * An example: 3395 * 3396 * <?xml version="1.0" encoding="utf-8"?> 3397 * <provisioningUrls> 3398 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3399 * </provisioningUrls> 3400 */ 3401 private static final String PROVISIONING_URL_PATH = 3402 "/data/misc/radio/provisioning_urls.xml"; 3403 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3404 3405 /** XML tag for root element. */ 3406 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3407 /** XML tag for individual url */ 3408 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3409 /** XML attribute for mcc */ 3410 private static final String ATTR_MCC = "mcc"; 3411 /** XML attribute for mnc */ 3412 private static final String ATTR_MNC = "mnc"; 3413 3414 private String getProvisioningUrlBaseFromFile() { 3415 FileReader fileReader = null; 3416 XmlPullParser parser = null; 3417 Configuration config = mContext.getResources().getConfiguration(); 3418 3419 try { 3420 fileReader = new FileReader(mProvisioningUrlFile); 3421 parser = Xml.newPullParser(); 3422 parser.setInput(fileReader); 3423 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3424 3425 while (true) { 3426 XmlUtils.nextElement(parser); 3427 3428 String element = parser.getName(); 3429 if (element == null) break; 3430 3431 if (element.equals(TAG_PROVISIONING_URL)) { 3432 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3433 try { 3434 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3435 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3436 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3437 parser.next(); 3438 if (parser.getEventType() == XmlPullParser.TEXT) { 3439 return parser.getText(); 3440 } 3441 } 3442 } 3443 } catch (NumberFormatException e) { 3444 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3445 } 3446 } 3447 } 3448 return null; 3449 } catch (FileNotFoundException e) { 3450 loge("Carrier Provisioning Urls file not found"); 3451 } catch (XmlPullParserException e) { 3452 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3453 } catch (IOException e) { 3454 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3455 } finally { 3456 if (fileReader != null) { 3457 try { 3458 fileReader.close(); 3459 } catch (IOException e) {} 3460 } 3461 } 3462 return null; 3463 } 3464 3465 @Override 3466 public String getMobileProvisioningUrl() { 3467 enforceConnectivityInternalPermission(); 3468 String url = getProvisioningUrlBaseFromFile(); 3469 if (TextUtils.isEmpty(url)) { 3470 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3471 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3472 } else { 3473 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3474 } 3475 // populate the iccid, imei and phone number in the provisioning url. 3476 if (!TextUtils.isEmpty(url)) { 3477 String phoneNumber = mTelephonyManager.getLine1Number(); 3478 if (TextUtils.isEmpty(phoneNumber)) { 3479 phoneNumber = "0000000000"; 3480 } 3481 url = String.format(url, 3482 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3483 mTelephonyManager.getDeviceId() /* IMEI */, 3484 phoneNumber /* Phone numer */); 3485 } 3486 3487 return url; 3488 } 3489 3490 @Override 3491 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3492 String action) { 3493 enforceConnectivityInternalPermission(); 3494 final long ident = Binder.clearCallingIdentity(); 3495 try { 3496 setProvNotificationVisible(visible, networkType, action); 3497 } finally { 3498 Binder.restoreCallingIdentity(ident); 3499 } 3500 } 3501 3502 @Override 3503 public void setAirplaneMode(boolean enable) { 3504 enforceConnectivityInternalPermission(); 3505 final long ident = Binder.clearCallingIdentity(); 3506 try { 3507 final ContentResolver cr = mContext.getContentResolver(); 3508 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3509 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3510 intent.putExtra("state", enable); 3511 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3512 } finally { 3513 Binder.restoreCallingIdentity(ident); 3514 } 3515 } 3516 3517 private void onUserStart(int userId) { 3518 synchronized(mVpns) { 3519 Vpn userVpn = mVpns.get(userId); 3520 if (userVpn != null) { 3521 loge("Starting user already has a VPN"); 3522 return; 3523 } 3524 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3525 mVpns.put(userId, userVpn); 3526 } 3527 } 3528 3529 private void onUserStop(int userId) { 3530 synchronized(mVpns) { 3531 Vpn userVpn = mVpns.get(userId); 3532 if (userVpn == null) { 3533 loge("Stopping user has no VPN"); 3534 return; 3535 } 3536 mVpns.delete(userId); 3537 } 3538 } 3539 3540 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3541 @Override 3542 public void onReceive(Context context, Intent intent) { 3543 final String action = intent.getAction(); 3544 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3545 if (userId == UserHandle.USER_NULL) return; 3546 3547 if (Intent.ACTION_USER_STARTING.equals(action)) { 3548 onUserStart(userId); 3549 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3550 onUserStop(userId); 3551 } 3552 } 3553 }; 3554 3555 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3556 new HashMap<Messenger, NetworkFactoryInfo>(); 3557 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3558 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3559 3560 private static class NetworkFactoryInfo { 3561 public final String name; 3562 public final Messenger messenger; 3563 public final AsyncChannel asyncChannel; 3564 3565 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3566 this.name = name; 3567 this.messenger = messenger; 3568 this.asyncChannel = asyncChannel; 3569 } 3570 } 3571 3572 /** 3573 * Tracks info about the requester. 3574 * Also used to notice when the calling process dies so we can self-expire 3575 */ 3576 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3577 static final boolean REQUEST = true; 3578 static final boolean LISTEN = false; 3579 3580 final NetworkRequest request; 3581 final PendingIntent mPendingIntent; 3582 boolean mPendingIntentSent; 3583 private final IBinder mBinder; 3584 final int mPid; 3585 final int mUid; 3586 final Messenger messenger; 3587 final boolean isRequest; 3588 3589 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3590 request = r; 3591 mPendingIntent = pi; 3592 messenger = null; 3593 mBinder = null; 3594 mPid = getCallingPid(); 3595 mUid = getCallingUid(); 3596 this.isRequest = isRequest; 3597 } 3598 3599 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3600 super(); 3601 messenger = m; 3602 request = r; 3603 mBinder = binder; 3604 mPid = getCallingPid(); 3605 mUid = getCallingUid(); 3606 this.isRequest = isRequest; 3607 mPendingIntent = null; 3608 3609 try { 3610 mBinder.linkToDeath(this, 0); 3611 } catch (RemoteException e) { 3612 binderDied(); 3613 } 3614 } 3615 3616 void unlinkDeathRecipient() { 3617 if (mBinder != null) { 3618 mBinder.unlinkToDeath(this, 0); 3619 } 3620 } 3621 3622 public void binderDied() { 3623 log("ConnectivityService NetworkRequestInfo binderDied(" + 3624 request + ", " + mBinder + ")"); 3625 releaseNetworkRequest(request); 3626 } 3627 3628 public String toString() { 3629 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3630 mPid + " for " + request + 3631 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3632 } 3633 } 3634 3635 private void ensureImmutableCapabilities(NetworkCapabilities networkCapabilities) { 3636 if (networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 3637 throw new IllegalArgumentException( 3638 "Cannot request network with NET_CAPABILITY_VALIDATED"); 3639 } 3640 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL)) { 3641 throw new IllegalArgumentException( 3642 "Cannot request network with NET_CAPABILITY_CAPTIVE_PORTAL"); 3643 } 3644 } 3645 3646 @Override 3647 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3648 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3649 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3650 enforceNetworkRequestPermissions(networkCapabilities); 3651 enforceMeteredApnPolicy(networkCapabilities); 3652 ensureImmutableCapabilities(networkCapabilities); 3653 3654 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3655 throw new IllegalArgumentException("Bad timeout specified"); 3656 } 3657 3658 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3659 nextNetworkRequestId()); 3660 if (DBG) log("requestNetwork for " + networkRequest); 3661 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3662 NetworkRequestInfo.REQUEST); 3663 3664 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3665 if (timeoutMs > 0) { 3666 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3667 nri), timeoutMs); 3668 } 3669 return networkRequest; 3670 } 3671 3672 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3673 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3674 enforceConnectivityInternalPermission(); 3675 } else { 3676 enforceChangePermission(); 3677 } 3678 } 3679 3680 @Override 3681 public boolean requestBandwidthUpdate(Network network) { 3682 enforceAccessPermission(); 3683 NetworkAgentInfo nai = null; 3684 if (network == null) { 3685 return false; 3686 } 3687 synchronized (mNetworkForNetId) { 3688 nai = mNetworkForNetId.get(network.netId); 3689 } 3690 if (nai != null) { 3691 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3692 return true; 3693 } 3694 return false; 3695 } 3696 3697 3698 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3699 // if UID is restricted, don't allow them to bring up metered APNs 3700 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3701 final int uidRules; 3702 final int uid = Binder.getCallingUid(); 3703 synchronized(mRulesLock) { 3704 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3705 } 3706 if ((uidRules & (RULE_REJECT_METERED | RULE_REJECT_ALL)) != 0) { 3707 // we could silently fail or we can filter the available nets to only give 3708 // them those they have access to. Chose the more useful 3709 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3710 } 3711 } 3712 } 3713 3714 @Override 3715 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3716 PendingIntent operation) { 3717 checkNotNull(operation, "PendingIntent cannot be null."); 3718 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3719 enforceNetworkRequestPermissions(networkCapabilities); 3720 enforceMeteredApnPolicy(networkCapabilities); 3721 ensureImmutableCapabilities(networkCapabilities); 3722 3723 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3724 nextNetworkRequestId()); 3725 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3726 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3727 NetworkRequestInfo.REQUEST); 3728 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3729 nri)); 3730 return networkRequest; 3731 } 3732 3733 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3734 mHandler.sendMessageDelayed( 3735 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3736 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3737 } 3738 3739 @Override 3740 public void releasePendingNetworkRequest(PendingIntent operation) { 3741 checkNotNull(operation, "PendingIntent cannot be null."); 3742 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3743 getCallingUid(), 0, operation)); 3744 } 3745 3746 // In order to implement the compatibility measure for pre-M apps that call 3747 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3748 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3749 // This ensures it has permission to do so. 3750 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3751 if (nc == null) { 3752 return false; 3753 } 3754 int[] transportTypes = nc.getTransportTypes(); 3755 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3756 return false; 3757 } 3758 try { 3759 mContext.enforceCallingOrSelfPermission( 3760 android.Manifest.permission.ACCESS_WIFI_STATE, 3761 "ConnectivityService"); 3762 } catch (SecurityException e) { 3763 return false; 3764 } 3765 return true; 3766 } 3767 3768 @Override 3769 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3770 Messenger messenger, IBinder binder) { 3771 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3772 enforceAccessPermission(); 3773 } 3774 3775 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3776 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3777 if (DBG) log("listenForNetwork for " + networkRequest); 3778 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3779 NetworkRequestInfo.LISTEN); 3780 3781 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3782 return networkRequest; 3783 } 3784 3785 @Override 3786 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3787 PendingIntent operation) { 3788 checkNotNull(operation, "PendingIntent cannot be null."); 3789 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3790 enforceAccessPermission(); 3791 } 3792 3793 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3794 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3795 if (DBG) log("pendingListenForNetwork for " + networkRequest + " to trigger " + operation); 3796 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3797 NetworkRequestInfo.LISTEN); 3798 3799 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3800 } 3801 3802 @Override 3803 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3804 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3805 0, networkRequest)); 3806 } 3807 3808 @Override 3809 public void registerNetworkFactory(Messenger messenger, String name) { 3810 enforceConnectivityInternalPermission(); 3811 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3812 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3813 } 3814 3815 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3816 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3817 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3818 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3819 } 3820 3821 @Override 3822 public void unregisterNetworkFactory(Messenger messenger) { 3823 enforceConnectivityInternalPermission(); 3824 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3825 } 3826 3827 private void handleUnregisterNetworkFactory(Messenger messenger) { 3828 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3829 if (nfi == null) { 3830 loge("Failed to find Messenger in unregisterNetworkFactory"); 3831 return; 3832 } 3833 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3834 } 3835 3836 /** 3837 * NetworkAgentInfo supporting a request by requestId. 3838 * These have already been vetted (their Capabilities satisfy the request) 3839 * and the are the highest scored network available. 3840 * the are keyed off the Requests requestId. 3841 */ 3842 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 3843 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3844 new SparseArray<NetworkAgentInfo>(); 3845 3846 // NOTE: Accessed on multiple threads, must be synchronized on itself. 3847 @GuardedBy("mNetworkForNetId") 3848 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3849 new SparseArray<NetworkAgentInfo>(); 3850 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 3851 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 3852 // there may not be a strict 1:1 correlation between the two. 3853 @GuardedBy("mNetworkForNetId") 3854 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 3855 3856 // NetworkAgentInfo keyed off its connecting messenger 3857 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3858 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 3859 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3860 new HashMap<Messenger, NetworkAgentInfo>(); 3861 3862 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3863 private final NetworkRequest mDefaultRequest; 3864 3865 // Request used to optionally keep mobile data active even when higher 3866 // priority networks like Wi-Fi are active. 3867 private final NetworkRequest mDefaultMobileDataRequest; 3868 3869 private NetworkAgentInfo getDefaultNetwork() { 3870 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3871 } 3872 3873 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3874 return nai == getDefaultNetwork(); 3875 } 3876 3877 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3878 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3879 int currentScore, NetworkMisc networkMisc) { 3880 enforceConnectivityInternalPermission(); 3881 3882 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3883 // satisfies mDefaultRequest. 3884 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3885 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 3886 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 3887 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest); 3888 synchronized (this) { 3889 nai.networkMonitor.systemReady = mSystemReady; 3890 } 3891 addValidationLogs(nai.networkMonitor.getValidationLogs(), nai.network); 3892 if (DBG) log("registerNetworkAgent " + nai); 3893 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3894 return nai.network.netId; 3895 } 3896 3897 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3898 if (VDBG) log("Got NetworkAgent Messenger"); 3899 mNetworkAgentInfos.put(na.messenger, na); 3900 synchronized (mNetworkForNetId) { 3901 mNetworkForNetId.put(na.network.netId, na); 3902 } 3903 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3904 NetworkInfo networkInfo = na.networkInfo; 3905 na.networkInfo = null; 3906 updateNetworkInfo(na, networkInfo); 3907 } 3908 3909 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3910 LinkProperties newLp = networkAgent.linkProperties; 3911 int netId = networkAgent.network.netId; 3912 3913 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3914 // we do anything else, make sure its LinkProperties are accurate. 3915 if (networkAgent.clatd != null) { 3916 networkAgent.clatd.fixupLinkProperties(oldLp); 3917 } 3918 3919 updateInterfaces(newLp, oldLp, netId); 3920 updateMtu(newLp, oldLp); 3921 // TODO - figure out what to do for clat 3922// for (LinkProperties lp : newLp.getStackedLinks()) { 3923// updateMtu(lp, null); 3924// } 3925 updateTcpBufferSizes(networkAgent); 3926 3927 // TODO: deprecate and remove mDefaultDns when we can do so safely. See http://b/18327075 3928 // In L, we used it only when the network had Internet access but provided no DNS servers. 3929 // For now, just disable it, and if disabling it doesn't break things, remove it. 3930 // final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3931 // NET_CAPABILITY_INTERNET); 3932 final boolean useDefaultDns = false; 3933 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3934 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3935 3936 updateClat(newLp, oldLp, networkAgent); 3937 if (isDefaultNetwork(networkAgent)) { 3938 handleApplyDefaultProxy(newLp.getHttpProxy()); 3939 } else { 3940 updateProxy(newLp, oldLp, networkAgent); 3941 } 3942 // TODO - move this check to cover the whole function 3943 if (!Objects.equals(newLp, oldLp)) { 3944 notifyIfacesChanged(); 3945 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3946 } 3947 } 3948 3949 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3950 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3951 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3952 3953 if (!wasRunningClat && shouldRunClat) { 3954 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3955 nai.clatd.start(); 3956 } else if (wasRunningClat && !shouldRunClat) { 3957 nai.clatd.stop(); 3958 } 3959 } 3960 3961 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3962 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3963 if (oldLp != null) { 3964 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3965 } else if (newLp != null) { 3966 interfaceDiff.added = newLp.getAllInterfaceNames(); 3967 } 3968 for (String iface : interfaceDiff.added) { 3969 try { 3970 if (DBG) log("Adding iface " + iface + " to network " + netId); 3971 mNetd.addInterfaceToNetwork(iface, netId); 3972 } catch (Exception e) { 3973 loge("Exception adding interface: " + e); 3974 } 3975 } 3976 for (String iface : interfaceDiff.removed) { 3977 try { 3978 if (DBG) log("Removing iface " + iface + " from network " + netId); 3979 mNetd.removeInterfaceFromNetwork(iface, netId); 3980 } catch (Exception e) { 3981 loge("Exception removing interface: " + e); 3982 } 3983 } 3984 } 3985 3986 /** 3987 * Have netd update routes from oldLp to newLp. 3988 * @return true if routes changed between oldLp and newLp 3989 */ 3990 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3991 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3992 if (oldLp != null) { 3993 routeDiff = oldLp.compareAllRoutes(newLp); 3994 } else if (newLp != null) { 3995 routeDiff.added = newLp.getAllRoutes(); 3996 } 3997 3998 // add routes before removing old in case it helps with continuous connectivity 3999 4000 // do this twice, adding non-nexthop routes first, then routes they are dependent on 4001 for (RouteInfo route : routeDiff.added) { 4002 if (route.hasGateway()) continue; 4003 if (DBG) log("Adding Route [" + route + "] to network " + netId); 4004 try { 4005 mNetd.addRoute(netId, route); 4006 } catch (Exception e) { 4007 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 4008 loge("Exception in addRoute for non-gateway: " + e); 4009 } 4010 } 4011 } 4012 for (RouteInfo route : routeDiff.added) { 4013 if (route.hasGateway() == false) continue; 4014 if (DBG) log("Adding Route [" + route + "] to network " + netId); 4015 try { 4016 mNetd.addRoute(netId, route); 4017 } catch (Exception e) { 4018 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4019 loge("Exception in addRoute for gateway: " + e); 4020 } 4021 } 4022 } 4023 4024 for (RouteInfo route : routeDiff.removed) { 4025 if (DBG) log("Removing Route [" + route + "] from network " + netId); 4026 try { 4027 mNetd.removeRoute(netId, route); 4028 } catch (Exception e) { 4029 loge("Exception in removeRoute: " + e); 4030 } 4031 } 4032 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4033 } 4034 4035 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 4036 boolean flush, boolean useDefaultDns) { 4037 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 4038 Collection<InetAddress> dnses = newLp.getDnsServers(); 4039 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 4040 dnses = new ArrayList(); 4041 dnses.add(mDefaultDns); 4042 if (DBG) { 4043 loge("no dns provided for netId " + netId + ", so using defaults"); 4044 } 4045 } 4046 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 4047 try { 4048 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 4049 newLp.getDomains()); 4050 } catch (Exception e) { 4051 loge("Exception in setDnsServersForNetwork: " + e); 4052 } 4053 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 4054 if (defaultNai != null && defaultNai.network.netId == netId) { 4055 setDefaultDnsSystemProperties(dnses); 4056 } 4057 flushVmDnsCache(); 4058 } else if (flush) { 4059 try { 4060 mNetd.flushNetworkDnsCache(netId); 4061 } catch (Exception e) { 4062 loge("Exception in flushNetworkDnsCache: " + e); 4063 } 4064 flushVmDnsCache(); 4065 } 4066 } 4067 4068 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4069 int last = 0; 4070 for (InetAddress dns : dnses) { 4071 ++last; 4072 String key = "net.dns" + last; 4073 String value = dns.getHostAddress(); 4074 SystemProperties.set(key, value); 4075 } 4076 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4077 String key = "net.dns" + i; 4078 SystemProperties.set(key, ""); 4079 } 4080 mNumDnsEntries = last; 4081 } 4082 4083 /** 4084 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 4085 * augmented with any stateful capabilities implied from {@code networkAgent} 4086 * (e.g., validated status and captive portal status). 4087 * 4088 * @param networkAgent the network having its capabilities updated. 4089 * @param networkCapabilities the new network capabilities. 4090 * @param nascent indicates whether {@code networkAgent} was validated 4091 * (i.e. had everValidated set for the first time) immediately prior to this call. 4092 */ 4093 private void updateCapabilities(NetworkAgentInfo networkAgent, 4094 NetworkCapabilities networkCapabilities, NascentState nascent) { 4095 // Don't modify caller's NetworkCapabilities. 4096 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4097 if (networkAgent.lastValidated) { 4098 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4099 } else { 4100 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4101 } 4102 if (networkAgent.lastCaptivePortalDetected) { 4103 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4104 } else { 4105 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4106 } 4107 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 4108 synchronized (networkAgent) { 4109 networkAgent.networkCapabilities = networkCapabilities; 4110 } 4111 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore(), nascent); 4112 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 4113 } 4114 } 4115 4116 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4117 for (int i = 0; i < nai.networkRequests.size(); i++) { 4118 NetworkRequest nr = nai.networkRequests.valueAt(i); 4119 // Don't send listening requests to factories. b/17393458 4120 if (!isRequest(nr)) continue; 4121 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4122 } 4123 } 4124 4125 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4126 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4127 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4128 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4129 networkRequest); 4130 } 4131 } 4132 4133 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4134 int notificationType) { 4135 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4136 Intent intent = new Intent(); 4137 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4138 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4139 nri.mPendingIntentSent = true; 4140 sendIntent(nri.mPendingIntent, intent); 4141 } 4142 // else not handled 4143 } 4144 4145 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4146 mPendingIntentWakeLock.acquire(); 4147 try { 4148 if (DBG) log("Sending " + pendingIntent); 4149 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4150 } catch (PendingIntent.CanceledException e) { 4151 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4152 mPendingIntentWakeLock.release(); 4153 releasePendingNetworkRequest(pendingIntent); 4154 } 4155 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4156 } 4157 4158 @Override 4159 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4160 String resultData, Bundle resultExtras) { 4161 if (DBG) log("Finished sending " + pendingIntent); 4162 mPendingIntentWakeLock.release(); 4163 // Release with a delay so the receiving client has an opportunity to put in its 4164 // own request. 4165 releasePendingNetworkRequestWithDelay(pendingIntent); 4166 } 4167 4168 private void callCallbackForRequest(NetworkRequestInfo nri, 4169 NetworkAgentInfo networkAgent, int notificationType) { 4170 if (nri.messenger == null) return; // Default request has no msgr 4171 Bundle bundle = new Bundle(); 4172 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4173 new NetworkRequest(nri.request)); 4174 Message msg = Message.obtain(); 4175 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4176 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4177 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4178 } 4179 switch (notificationType) { 4180 case ConnectivityManager.CALLBACK_LOSING: { 4181 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4182 break; 4183 } 4184 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4185 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4186 new NetworkCapabilities(networkAgent.networkCapabilities)); 4187 break; 4188 } 4189 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4190 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4191 new LinkProperties(networkAgent.linkProperties)); 4192 break; 4193 } 4194 } 4195 msg.what = notificationType; 4196 msg.setData(bundle); 4197 try { 4198 if (VDBG) { 4199 log("sending notification " + notifyTypeToName(notificationType) + 4200 " for " + nri.request); 4201 } 4202 nri.messenger.send(msg); 4203 } catch (RemoteException e) { 4204 // may occur naturally in the race of binder death. 4205 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4206 } 4207 } 4208 4209 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4210 for (int i = 0; i < nai.networkRequests.size(); i++) { 4211 NetworkRequest nr = nai.networkRequests.valueAt(i); 4212 // Ignore listening requests. 4213 if (!isRequest(nr)) continue; 4214 loge("Dead network still had at least " + nr); 4215 break; 4216 } 4217 nai.asyncChannel.disconnect(); 4218 } 4219 4220 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4221 if (oldNetwork == null) { 4222 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4223 return; 4224 } 4225 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4226 teardownUnneededNetwork(oldNetwork); 4227 } 4228 4229 private void makeDefault(NetworkAgentInfo newNetwork) { 4230 if (DBG) log("Switching to new default network: " + newNetwork); 4231 setupDataActivityTracking(newNetwork); 4232 try { 4233 mNetd.setDefaultNetId(newNetwork.network.netId); 4234 } catch (Exception e) { 4235 loge("Exception setting default network :" + e); 4236 } 4237 notifyLockdownVpn(newNetwork); 4238 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4239 updateTcpBufferSizes(newNetwork); 4240 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4241 } 4242 4243 // Handles a network appearing or improving its score. 4244 // 4245 // - Evaluates all current NetworkRequests that can be 4246 // satisfied by newNetwork, and reassigns to newNetwork 4247 // any such requests for which newNetwork is the best. 4248 // 4249 // - Lingers any validated Networks that as a result are no longer 4250 // needed. A network is needed if it is the best network for 4251 // one or more NetworkRequests, or if it is a VPN. 4252 // 4253 // - Tears down newNetwork if it just became validated 4254 // (i.e. nascent==JUST_VALIDATED) but turns out to be unneeded. 4255 // 4256 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4257 // networks that have no chance (i.e. even if validated) 4258 // of becoming the highest scoring network. 4259 // 4260 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4261 // it does not remove NetworkRequests that other Networks could better satisfy. 4262 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4263 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4264 // as it performs better by a factor of the number of Networks. 4265 // 4266 // @param newNetwork is the network to be matched against NetworkRequests. 4267 // @param nascent indicates if newNetwork just became validated, in which case it should be 4268 // torn down if unneeded. 4269 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4270 // performed to tear down unvalidated networks that have no chance (i.e. even if 4271 // validated) of becoming the highest scoring network. 4272 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, NascentState nascent, 4273 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4274 if (!newNetwork.created) return; 4275 if (nascent == NascentState.JUST_VALIDATED && !newNetwork.everValidated) { 4276 loge("ERROR: nascent network not validated."); 4277 } 4278 boolean keep = newNetwork.isVPN(); 4279 boolean isNewDefault = false; 4280 NetworkAgentInfo oldDefaultNetwork = null; 4281 if (DBG) log("rematching " + newNetwork.name()); 4282 // Find and migrate to this Network any NetworkRequests for 4283 // which this network is now the best. 4284 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4285 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4286 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4287 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4288 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4289 if (newNetwork == currentNetwork) { 4290 if (DBG) { 4291 log("Network " + newNetwork.name() + " was already satisfying" + 4292 " request " + nri.request.requestId + ". No change."); 4293 } 4294 keep = true; 4295 continue; 4296 } 4297 4298 // check if it satisfies the NetworkCapabilities 4299 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4300 if (newNetwork.satisfies(nri.request)) { 4301 if (!nri.isRequest) { 4302 // This is not a request, it's a callback listener. 4303 // Add it to newNetwork regardless of score. 4304 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4305 continue; 4306 } 4307 4308 // next check if it's better than any current network we're using for 4309 // this request 4310 if (VDBG) { 4311 log("currentScore = " + 4312 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4313 ", newScore = " + newNetwork.getCurrentScore()); 4314 } 4315 if (currentNetwork == null || 4316 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4317 if (currentNetwork != null) { 4318 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4319 currentNetwork.networkRequests.remove(nri.request.requestId); 4320 currentNetwork.networkLingered.add(nri.request); 4321 affectedNetworks.add(currentNetwork); 4322 } else { 4323 if (DBG) log(" accepting network in place of null"); 4324 } 4325 unlinger(newNetwork); 4326 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4327 if (!newNetwork.addRequest(nri.request)) { 4328 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4329 } 4330 addedRequests.add(nri); 4331 keep = true; 4332 // Tell NetworkFactories about the new score, so they can stop 4333 // trying to connect if they know they cannot match it. 4334 // TODO - this could get expensive if we have alot of requests for this 4335 // network. Think about if there is a way to reduce this. Push 4336 // netid->request mapping to each factory? 4337 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4338 if (mDefaultRequest.requestId == nri.request.requestId) { 4339 isNewDefault = true; 4340 oldDefaultNetwork = currentNetwork; 4341 } 4342 } 4343 } 4344 } 4345 // Linger any networks that are no longer needed. 4346 for (NetworkAgentInfo nai : affectedNetworks) { 4347 if (nai.everValidated && unneeded(nai)) { 4348 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4349 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4350 } else { 4351 unlinger(nai); 4352 } 4353 } 4354 if (keep) { 4355 if (isNewDefault) { 4356 // Notify system services that this network is up. 4357 makeDefault(newNetwork); 4358 synchronized (ConnectivityService.this) { 4359 // have a new default network, release the transition wakelock in 4360 // a second if it's held. The second pause is to allow apps 4361 // to reconnect over the new network 4362 if (mNetTransitionWakeLock.isHeld()) { 4363 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4364 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4365 mNetTransitionWakeLockSerialNumber, 0), 4366 1000); 4367 } 4368 } 4369 } 4370 4371 // do this after the default net is switched, but 4372 // before LegacyTypeTracker sends legacy broadcasts 4373 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4374 4375 if (isNewDefault) { 4376 // Maintain the illusion: since the legacy API only 4377 // understands one network at a time, we must pretend 4378 // that the current default network disconnected before 4379 // the new one connected. 4380 if (oldDefaultNetwork != null) { 4381 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4382 oldDefaultNetwork, true); 4383 } 4384 mDefaultInetConditionPublished = newNetwork.everValidated ? 100 : 0; 4385 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4386 notifyLockdownVpn(newNetwork); 4387 } 4388 4389 // Notify battery stats service about this network, both the normal 4390 // interface and any stacked links. 4391 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4392 try { 4393 final IBatteryStats bs = BatteryStatsService.getService(); 4394 final int type = newNetwork.networkInfo.getType(); 4395 4396 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4397 bs.noteNetworkInterfaceType(baseIface, type); 4398 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4399 final String stackedIface = stacked.getInterfaceName(); 4400 bs.noteNetworkInterfaceType(stackedIface, type); 4401 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4402 } 4403 } catch (RemoteException ignored) { 4404 } 4405 4406 // This has to happen after the notifyNetworkCallbacks as that tickles each 4407 // ConnectivityManager instance so that legacy requests correctly bind dns 4408 // requests to this network. The legacy users are listening for this bcast 4409 // and will generally do a dns request so they can ensureRouteToHost and if 4410 // they do that before the callbacks happen they'll use the default network. 4411 // 4412 // TODO: Is there still a race here? We send the broadcast 4413 // after sending the callback, but if the app can receive the 4414 // broadcast before the callback, it might still break. 4415 // 4416 // This *does* introduce a race where if the user uses the new api 4417 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4418 // they may get old info. Reverse this after the old startUsing api is removed. 4419 // This is on top of the multiple intent sequencing referenced in the todo above. 4420 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4421 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4422 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4423 // legacy type tracker filters out repeat adds 4424 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4425 } 4426 } 4427 4428 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4429 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4430 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4431 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4432 if (newNetwork.isVPN()) { 4433 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4434 } 4435 } else if (nascent == NascentState.JUST_VALIDATED) { 4436 // Only tear down newly validated networks here. Leave unvalidated to either become 4437 // validated (and get evaluated against peers, one losing here), or get reaped (see 4438 // reapUnvalidatedNetworks) if they have no chance of becoming the highest scoring 4439 // network. Networks that have been up for a while and are validated should be torn 4440 // down via the lingering process so communication on that network is given time to 4441 // wrap up. 4442 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4443 teardownUnneededNetwork(newNetwork); 4444 } 4445 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4446 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4447 if (!nai.everValidated && unneeded(nai)) { 4448 if (DBG) log("Reaping " + nai.name()); 4449 teardownUnneededNetwork(nai); 4450 } 4451 } 4452 } 4453 } 4454 4455 /** 4456 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4457 * being disconnected. 4458 * @param changed If only one Network's score or capabilities have been modified since the last 4459 * time this function was called, pass this Network in this argument, otherwise pass 4460 * null. 4461 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4462 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4463 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4464 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4465 * network's score. 4466 * @param nascent indicates if {@code changed} has just been validated. 4467 */ 4468 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore, 4469 NascentState nascent) { 4470 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4471 // to avoid the slowness. It is not simply enough to process just "changed", for 4472 // example in the case where "changed"'s score decreases and another network should begin 4473 // satifying a NetworkRequest that "changed" currently satisfies. 4474 4475 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4476 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4477 // rematchNetworkAndRequests() handles. 4478 if (changed != null && 4479 (oldScore < changed.getCurrentScore() || nascent == NascentState.JUST_VALIDATED)) { 4480 rematchNetworkAndRequests(changed, nascent, ReapUnvalidatedNetworks.REAP); 4481 } else { 4482 for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) { 4483 rematchNetworkAndRequests((NetworkAgentInfo)i.next(), 4484 NascentState.NOT_JUST_VALIDATED, 4485 // Only reap the last time through the loop. Reaping before all rematching 4486 // is complete could incorrectly teardown a network that hasn't yet been 4487 // rematched. 4488 i.hasNext() ? ReapUnvalidatedNetworks.DONT_REAP 4489 : ReapUnvalidatedNetworks.REAP); 4490 } 4491 } 4492 } 4493 4494 private void updateInetCondition(NetworkAgentInfo nai) { 4495 // Don't bother updating until we've graduated to validated at least once. 4496 if (!nai.everValidated) return; 4497 // For now only update icons for default connection. 4498 // TODO: Update WiFi and cellular icons separately. b/17237507 4499 if (!isDefaultNetwork(nai)) return; 4500 4501 int newInetCondition = nai.lastValidated ? 100 : 0; 4502 // Don't repeat publish. 4503 if (newInetCondition == mDefaultInetConditionPublished) return; 4504 4505 mDefaultInetConditionPublished = newInetCondition; 4506 sendInetConditionBroadcast(nai.networkInfo); 4507 } 4508 4509 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4510 if (mLockdownTracker != null) { 4511 if (nai != null && nai.isVPN()) { 4512 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4513 } else { 4514 mLockdownTracker.onNetworkInfoChanged(); 4515 } 4516 } 4517 } 4518 4519 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4520 NetworkInfo.State state = newInfo.getState(); 4521 NetworkInfo oldInfo = null; 4522 final int oldScore = networkAgent.getCurrentScore(); 4523 synchronized (networkAgent) { 4524 oldInfo = networkAgent.networkInfo; 4525 networkAgent.networkInfo = newInfo; 4526 } 4527 notifyLockdownVpn(networkAgent); 4528 4529 if (oldInfo != null && oldInfo.getState() == state) { 4530 if (VDBG) log("ignoring duplicate network state non-change"); 4531 return; 4532 } 4533 if (DBG) { 4534 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4535 (oldInfo == null ? "null" : oldInfo.getState()) + 4536 " to " + state); 4537 } 4538 4539 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4540 try { 4541 // This should never fail. Specifying an already in use NetID will cause failure. 4542 if (networkAgent.isVPN()) { 4543 mNetd.createVirtualNetwork(networkAgent.network.netId, 4544 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4545 (networkAgent.networkMisc == null || 4546 !networkAgent.networkMisc.allowBypass)); 4547 } else { 4548 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4549 } 4550 } catch (Exception e) { 4551 loge("Error creating network " + networkAgent.network.netId + ": " 4552 + e.getMessage()); 4553 return; 4554 } 4555 networkAgent.created = true; 4556 updateLinkProperties(networkAgent, null); 4557 notifyIfacesChanged(); 4558 4559 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4560 scheduleUnvalidatedPrompt(networkAgent); 4561 4562 if (networkAgent.isVPN()) { 4563 // Temporarily disable the default proxy (not global). 4564 synchronized (mProxyLock) { 4565 if (!mDefaultProxyDisabled) { 4566 mDefaultProxyDisabled = true; 4567 if (mGlobalProxy == null && mDefaultProxy != null) { 4568 sendProxyBroadcast(null); 4569 } 4570 } 4571 } 4572 // TODO: support proxy per network. 4573 } 4574 4575 // Consider network even though it is not yet validated. 4576 rematchNetworkAndRequests(networkAgent, NascentState.NOT_JUST_VALIDATED, 4577 ReapUnvalidatedNetworks.REAP); 4578 4579 // This has to happen after matching the requests, because callbacks are just requests. 4580 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4581 } else if (state == NetworkInfo.State.DISCONNECTED) { 4582 networkAgent.asyncChannel.disconnect(); 4583 if (networkAgent.isVPN()) { 4584 synchronized (mProxyLock) { 4585 if (mDefaultProxyDisabled) { 4586 mDefaultProxyDisabled = false; 4587 if (mGlobalProxy == null && mDefaultProxy != null) { 4588 sendProxyBroadcast(mDefaultProxy); 4589 } 4590 } 4591 } 4592 } 4593 } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) || 4594 state == NetworkInfo.State.SUSPENDED) { 4595 // going into or coming out of SUSPEND: rescore and notify 4596 if (networkAgent.getCurrentScore() != oldScore) { 4597 rematchAllNetworksAndRequests(networkAgent, oldScore, 4598 NascentState.NOT_JUST_VALIDATED); 4599 } 4600 notifyNetworkCallbacks(networkAgent, (state == NetworkInfo.State.SUSPENDED ? 4601 ConnectivityManager.CALLBACK_SUSPENDED : 4602 ConnectivityManager.CALLBACK_RESUMED)); 4603 mLegacyTypeTracker.update(networkAgent); 4604 } 4605 } 4606 4607 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4608 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4609 if (score < 0) { 4610 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4611 "). Bumping score to min of 0"); 4612 score = 0; 4613 } 4614 4615 final int oldScore = nai.getCurrentScore(); 4616 nai.setCurrentScore(score); 4617 4618 rematchAllNetworksAndRequests(nai, oldScore, NascentState.NOT_JUST_VALIDATED); 4619 4620 sendUpdatedScoreToFactories(nai); 4621 } 4622 4623 // notify only this one new request of the current state 4624 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4625 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4626 // TODO - read state from monitor to decide what to send. 4627// if (nai.networkMonitor.isLingering()) { 4628// notifyType = NetworkCallbacks.LOSING; 4629// } else if (nai.networkMonitor.isEvaluating()) { 4630// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4631// } 4632 if (nri.mPendingIntent == null) { 4633 callCallbackForRequest(nri, nai, notifyType); 4634 } else { 4635 sendPendingIntentForRequest(nri, nai, notifyType); 4636 } 4637 } 4638 4639 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, DetailedState state, int type) { 4640 // The NetworkInfo we actually send out has no bearing on the real 4641 // state of affairs. For example, if the default connection is mobile, 4642 // and a request for HIPRI has just gone away, we need to pretend that 4643 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4644 // the state to DISCONNECTED, even though the network is of type MOBILE 4645 // and is still connected. 4646 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4647 info.setType(type); 4648 if (state != DetailedState.DISCONNECTED) { 4649 info.setDetailedState(state, null, info.getExtraInfo()); 4650 sendConnectedBroadcast(info); 4651 } else { 4652 info.setDetailedState(state, info.getReason(), info.getExtraInfo()); 4653 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4654 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4655 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4656 if (info.isFailover()) { 4657 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4658 nai.networkInfo.setFailover(false); 4659 } 4660 if (info.getReason() != null) { 4661 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4662 } 4663 if (info.getExtraInfo() != null) { 4664 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4665 } 4666 NetworkAgentInfo newDefaultAgent = null; 4667 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4668 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4669 if (newDefaultAgent != null) { 4670 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4671 newDefaultAgent.networkInfo); 4672 } else { 4673 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4674 } 4675 } 4676 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4677 mDefaultInetConditionPublished); 4678 sendStickyBroadcast(intent); 4679 if (newDefaultAgent != null) { 4680 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4681 } 4682 } 4683 } 4684 4685 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4686 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4687 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4688 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4689 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4690 if (VDBG) log(" sending notification for " + nr); 4691 if (nri.mPendingIntent == null) { 4692 callCallbackForRequest(nri, networkAgent, notifyType); 4693 } else { 4694 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4695 } 4696 } 4697 } 4698 4699 private String notifyTypeToName(int notifyType) { 4700 switch (notifyType) { 4701 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4702 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4703 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4704 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4705 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4706 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4707 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4708 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4709 } 4710 return "UNKNOWN"; 4711 } 4712 4713 /** 4714 * Notify other system services that set of active ifaces has changed. 4715 */ 4716 private void notifyIfacesChanged() { 4717 try { 4718 mStatsService.forceUpdateIfaces(); 4719 } catch (Exception ignored) { 4720 } 4721 } 4722 4723 @Override 4724 public boolean addVpnAddress(String address, int prefixLength) { 4725 throwIfLockdownEnabled(); 4726 int user = UserHandle.getUserId(Binder.getCallingUid()); 4727 synchronized (mVpns) { 4728 return mVpns.get(user).addAddress(address, prefixLength); 4729 } 4730 } 4731 4732 @Override 4733 public boolean removeVpnAddress(String address, int prefixLength) { 4734 throwIfLockdownEnabled(); 4735 int user = UserHandle.getUserId(Binder.getCallingUid()); 4736 synchronized (mVpns) { 4737 return mVpns.get(user).removeAddress(address, prefixLength); 4738 } 4739 } 4740 4741 @Override 4742 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4743 throwIfLockdownEnabled(); 4744 int user = UserHandle.getUserId(Binder.getCallingUid()); 4745 boolean success; 4746 synchronized (mVpns) { 4747 success = mVpns.get(user).setUnderlyingNetworks(networks); 4748 } 4749 if (success) { 4750 notifyIfacesChanged(); 4751 } 4752 return success; 4753 } 4754 4755 @Override 4756 public void factoryReset() { 4757 enforceConnectivityInternalPermission(); 4758 4759 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 4760 return; 4761 } 4762 4763 final int userId = UserHandle.getCallingUserId(); 4764 4765 // Turn airplane mode off 4766 setAirplaneMode(false); 4767 4768 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 4769 // Untether 4770 for (String tether : getTetheredIfaces()) { 4771 untether(tether); 4772 } 4773 } 4774 4775 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 4776 // Turn VPN off 4777 VpnConfig vpnConfig = getVpnConfig(userId); 4778 if (vpnConfig != null) { 4779 if (vpnConfig.legacy) { 4780 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 4781 } else { 4782 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 4783 // in the future without user intervention. 4784 setVpnPackageAuthorization(vpnConfig.user, userId, false); 4785 4786 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 4787 } 4788 } 4789 } 4790 } 4791} 4792