ConnectivityService.java revision 12acbd7836e989150d73b04452d8ee300d54bcf6
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.BroadcastOptions; 37import android.app.Notification; 38import android.app.NotificationManager; 39import android.app.PendingIntent; 40import android.content.BroadcastReceiver; 41import android.content.ContentResolver; 42import android.content.Context; 43import android.content.Intent; 44import android.content.IntentFilter; 45import android.content.pm.PackageManager; 46import android.content.res.Configuration; 47import android.content.res.Resources; 48import android.database.ContentObserver; 49import android.net.ConnectivityManager; 50import android.net.ConnectivityManager.PacketKeepalive; 51import android.net.IConnectivityManager; 52import android.net.INetworkManagementEventObserver; 53import android.net.INetworkPolicyListener; 54import android.net.INetworkPolicyManager; 55import android.net.INetworkStatsService; 56import android.net.LinkProperties; 57import android.net.LinkProperties.CompareResult; 58import android.net.Network; 59import android.net.NetworkAgent; 60import android.net.NetworkCapabilities; 61import android.net.NetworkConfig; 62import android.net.NetworkInfo; 63import android.net.NetworkInfo.DetailedState; 64import android.net.NetworkMisc; 65import android.net.NetworkQuotaInfo; 66import android.net.NetworkRequest; 67import android.net.NetworkState; 68import android.net.NetworkUtils; 69import android.net.Proxy; 70import android.net.ProxyInfo; 71import android.net.RouteInfo; 72import android.net.UidRange; 73import android.net.Uri; 74import android.os.Binder; 75import android.os.Build; 76import android.os.Bundle; 77import android.os.FileUtils; 78import android.os.Handler; 79import android.os.HandlerThread; 80import android.os.IBinder; 81import android.os.INetworkManagementService; 82import android.os.Looper; 83import android.os.Message; 84import android.os.Messenger; 85import android.os.ParcelFileDescriptor; 86import android.os.PowerManager; 87import android.os.Process; 88import android.os.RemoteException; 89import android.os.ResultReceiver; 90import android.os.SystemProperties; 91import android.os.UserHandle; 92import android.os.UserManager; 93import android.provider.Settings; 94import android.security.Credentials; 95import android.security.KeyStore; 96import android.telephony.TelephonyManager; 97import android.text.TextUtils; 98import android.util.LocalLog; 99import android.util.LocalLog.ReadOnlyLocalLog; 100import android.util.Pair; 101import android.util.Slog; 102import android.util.SparseArray; 103import android.util.SparseBooleanArray; 104import android.util.SparseIntArray; 105import android.util.Xml; 106 107import com.android.internal.R; 108import com.android.internal.annotations.GuardedBy; 109import com.android.internal.annotations.VisibleForTesting; 110import com.android.internal.app.IBatteryStats; 111import com.android.internal.net.LegacyVpnInfo; 112import com.android.internal.net.NetworkStatsFactory; 113import com.android.internal.net.VpnConfig; 114import com.android.internal.net.VpnInfo; 115import com.android.internal.net.VpnProfile; 116import com.android.internal.util.AsyncChannel; 117import com.android.internal.util.IndentingPrintWriter; 118import com.android.internal.util.XmlUtils; 119import com.android.server.am.BatteryStatsService; 120import com.android.server.connectivity.DataConnectionStats; 121import com.android.server.connectivity.KeepaliveTracker; 122import com.android.server.connectivity.NetworkDiagnostics; 123import com.android.server.connectivity.Nat464Xlat; 124import com.android.server.connectivity.NetworkAgentInfo; 125import com.android.server.connectivity.NetworkMonitor; 126import com.android.server.connectivity.PacManager; 127import com.android.server.connectivity.PermissionMonitor; 128import com.android.server.connectivity.ApfFilter; 129import com.android.server.connectivity.Tethering; 130import com.android.server.connectivity.Vpn; 131import com.android.server.net.BaseNetworkObserver; 132import com.android.server.net.LockdownVpnTracker; 133import com.google.android.collect.Lists; 134import com.google.android.collect.Sets; 135 136import org.xmlpull.v1.XmlPullParser; 137import org.xmlpull.v1.XmlPullParserException; 138 139import java.io.File; 140import java.io.FileDescriptor; 141import java.io.FileNotFoundException; 142import java.io.FileReader; 143import java.io.IOException; 144import java.io.PrintWriter; 145import java.net.Inet4Address; 146import java.net.InetAddress; 147import java.net.UnknownHostException; 148import java.util.ArrayDeque; 149import java.util.ArrayList; 150import java.util.Arrays; 151import java.util.Collection; 152import java.util.HashMap; 153import java.util.HashSet; 154import java.util.SortedSet; 155import java.util.TreeSet; 156import java.util.List; 157import java.util.Map; 158import java.util.Objects; 159 160/** 161 * @hide 162 */ 163public class ConnectivityService extends IConnectivityManager.Stub 164 implements PendingIntent.OnFinished { 165 private static final String TAG = "ConnectivityService"; 166 167 private static final boolean DBG = false; 168 private static final boolean VDBG = false; 169 170 private static final boolean LOGD_RULES = false; 171 private static final boolean LOGD_BLOCKED_NETWORKINFO = true; 172 173 // TODO: create better separation between radio types and network types 174 175 // how long to wait before switching back to a radio's default network 176 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 177 // system property that can override the above value 178 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 179 "android.telephony.apn-restore"; 180 181 // How long to wait before putting up a "This network doesn't have an Internet connection, 182 // connect anyway?" dialog after the user selects a network that doesn't validate. 183 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 184 185 // How long to delay to removal of a pending intent based request. 186 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 187 private final int mReleasePendingIntentDelayMs; 188 189 private Tethering mTethering; 190 191 private final PermissionMonitor mPermissionMonitor; 192 193 private KeyStore mKeyStore; 194 195 @GuardedBy("mVpns") 196 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 197 198 private boolean mLockdownEnabled; 199 private LockdownVpnTracker mLockdownTracker; 200 201 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 202 private Object mRulesLock = new Object(); 203 /** Currently active network rules by UID. */ 204 private SparseIntArray mUidRules = new SparseIntArray(); 205 /** Set of ifaces that are costly. */ 206 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 207 208 final private Context mContext; 209 private int mNetworkPreference; 210 // 0 is full bad, 100 is full good 211 private int mDefaultInetConditionPublished = 0; 212 213 private int mNumDnsEntries; 214 215 private boolean mTestMode; 216 private static ConnectivityService sServiceInstance; 217 218 private INetworkManagementService mNetd; 219 private INetworkStatsService mStatsService; 220 private INetworkPolicyManager mPolicyManager; 221 222 private String mCurrentTcpBufferSizes; 223 224 private static final int ENABLED = 1; 225 private static final int DISABLED = 0; 226 227 private enum ReapUnvalidatedNetworks { 228 // Tear down networks that have no chance (e.g. even if validated) of becoming 229 // the highest scoring network satisfying a NetworkRequest. This should be passed when 230 // all networks have been rematched against all NetworkRequests. 231 REAP, 232 // Don't reap networks. This should be passed when some networks have not yet been 233 // rematched against all NetworkRequests. 234 DONT_REAP 235 }; 236 237 /** 238 * used internally to change our mobile data enabled flag 239 */ 240 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 241 242 /** 243 * used internally to clear a wakelock when transitioning 244 * from one net to another. Clear happens when we get a new 245 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 246 * after a timeout if no network is found (typically 1 min). 247 */ 248 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 249 250 /** 251 * used internally to reload global proxy settings 252 */ 253 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 254 255 /** 256 * PAC manager has received new port. 257 */ 258 private static final int EVENT_PROXY_HAS_CHANGED = 16; 259 260 /** 261 * used internally when registering NetworkFactories 262 * obj = NetworkFactoryInfo 263 */ 264 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 265 266 /** 267 * used internally when registering NetworkAgents 268 * obj = Messenger 269 */ 270 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 271 272 /** 273 * used to add a network request 274 * includes a NetworkRequestInfo 275 */ 276 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 277 278 /** 279 * indicates a timeout period is over - check if we had a network yet or not 280 * and if not, call the timeout calback (but leave the request live until they 281 * cancel it. 282 * includes a NetworkRequestInfo 283 */ 284 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 285 286 /** 287 * used to add a network listener - no request 288 * includes a NetworkRequestInfo 289 */ 290 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 291 292 /** 293 * used to remove a network request, either a listener or a real request 294 * arg1 = UID of caller 295 * obj = NetworkRequest 296 */ 297 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 298 299 /** 300 * used internally when registering NetworkFactories 301 * obj = Messenger 302 */ 303 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 304 305 /** 306 * used internally to expire a wakelock when transitioning 307 * from one net to another. Expire happens when we fail to find 308 * a new network (typically after 1 minute) - 309 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 310 * a replacement network. 311 */ 312 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 313 314 /** 315 * Used internally to indicate the system is ready. 316 */ 317 private static final int EVENT_SYSTEM_READY = 25; 318 319 /** 320 * used to add a network request with a pending intent 321 * obj = NetworkRequestInfo 322 */ 323 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 324 325 /** 326 * used to remove a pending intent and its associated network request. 327 * arg1 = UID of caller 328 * obj = PendingIntent 329 */ 330 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 331 332 /** 333 * used to specify whether a network should be used even if unvalidated. 334 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 335 * arg2 = whether to remember this choice in the future (1 or 0) 336 * obj = network 337 */ 338 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 339 340 /** 341 * used to ask the user to confirm a connection to an unvalidated network. 342 * obj = network 343 */ 344 private static final int EVENT_PROMPT_UNVALIDATED = 29; 345 346 /** 347 * used internally to (re)configure mobile data always-on settings. 348 */ 349 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 350 351 /** 352 * used to add a network listener with a pending intent 353 * obj = NetworkRequestInfo 354 */ 355 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 356 357 /** 358 * used to push APF program to NetworkAgent 359 * replyTo = NetworkAgent message handler 360 * obj = byte[] of APF program 361 */ 362 private static final int EVENT_PUSH_APF_PROGRAM_TO_NETWORK = 32; 363 364 /** Handler thread used for both of the handlers below. */ 365 @VisibleForTesting 366 protected final HandlerThread mHandlerThread; 367 /** Handler used for internal events. */ 368 final private InternalHandler mHandler; 369 /** Handler used for incoming {@link NetworkStateTracker} events. */ 370 final private NetworkStateTrackerHandler mTrackerHandler; 371 372 private boolean mSystemReady; 373 private Intent mInitialBroadcast; 374 375 private PowerManager.WakeLock mNetTransitionWakeLock; 376 private String mNetTransitionWakeLockCausedBy = ""; 377 private int mNetTransitionWakeLockSerialNumber; 378 private int mNetTransitionWakeLockTimeout; 379 private final PowerManager.WakeLock mPendingIntentWakeLock; 380 381 private InetAddress mDefaultDns; 382 383 // used in DBG mode to track inet condition reports 384 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 385 private ArrayList mInetLog; 386 387 // track the current default http proxy - tell the world if we get a new one (real change) 388 private volatile ProxyInfo mDefaultProxy = null; 389 private Object mProxyLock = new Object(); 390 private boolean mDefaultProxyDisabled = false; 391 392 // track the global proxy. 393 private ProxyInfo mGlobalProxy = null; 394 395 private PacManager mPacManager = null; 396 397 final private SettingsObserver mSettingsObserver; 398 399 private UserManager mUserManager; 400 401 NetworkConfig[] mNetConfigs; 402 int mNetworksDefined; 403 404 // the set of network types that can only be enabled by system/sig apps 405 List mProtectedNetworks; 406 407 private DataConnectionStats mDataConnectionStats; 408 409 TelephonyManager mTelephonyManager; 410 411 private KeepaliveTracker mKeepaliveTracker; 412 413 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 414 private final static int MIN_NET_ID = 100; // some reserved marks 415 private final static int MAX_NET_ID = 65535; 416 private int mNextNetId = MIN_NET_ID; 417 418 // sequence number of NetworkRequests 419 private int mNextNetworkRequestId = 1; 420 421 // NetworkRequest activity String log entries. 422 private static final int MAX_NETWORK_REQUEST_LOGS = 20; 423 private final LocalLog mNetworkRequestInfoLogs = new LocalLog(MAX_NETWORK_REQUEST_LOGS); 424 425 // Array of <Network,ReadOnlyLocalLogs> tracking network validation and results 426 private static final int MAX_VALIDATION_LOGS = 10; 427 private final ArrayDeque<Pair<Network,ReadOnlyLocalLog>> mValidationLogs = 428 new ArrayDeque<Pair<Network,ReadOnlyLocalLog>>(MAX_VALIDATION_LOGS); 429 430 private void addValidationLogs(ReadOnlyLocalLog log, Network network) { 431 synchronized(mValidationLogs) { 432 while (mValidationLogs.size() >= MAX_VALIDATION_LOGS) { 433 mValidationLogs.removeLast(); 434 } 435 mValidationLogs.addFirst(new Pair(network, log)); 436 } 437 } 438 439 /** 440 * Implements support for the legacy "one network per network type" model. 441 * 442 * We used to have a static array of NetworkStateTrackers, one for each 443 * network type, but that doesn't work any more now that we can have, 444 * for example, more that one wifi network. This class stores all the 445 * NetworkAgentInfo objects that support a given type, but the legacy 446 * API will only see the first one. 447 * 448 * It serves two main purposes: 449 * 450 * 1. Provide information about "the network for a given type" (since this 451 * API only supports one). 452 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 453 * the first network for a given type changes, or if the default network 454 * changes. 455 */ 456 private class LegacyTypeTracker { 457 458 private static final boolean DBG = false; 459 private static final boolean VDBG = false; 460 private static final String TAG = "CSLegacyTypeTracker"; 461 462 /** 463 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 464 * Each list holds references to all NetworkAgentInfos that are used to 465 * satisfy requests for that network type. 466 * 467 * This array is built out at startup such that an unsupported network 468 * doesn't get an ArrayList instance, making this a tristate: 469 * unsupported, supported but not active and active. 470 * 471 * The actual lists are populated when we scan the network types that 472 * are supported on this device. 473 */ 474 private ArrayList<NetworkAgentInfo> mTypeLists[]; 475 476 public LegacyTypeTracker() { 477 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 478 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 479 } 480 481 public void addSupportedType(int type) { 482 if (mTypeLists[type] != null) { 483 throw new IllegalStateException( 484 "legacy list for type " + type + "already initialized"); 485 } 486 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 487 } 488 489 public boolean isTypeSupported(int type) { 490 return isNetworkTypeValid(type) && mTypeLists[type] != null; 491 } 492 493 public NetworkAgentInfo getNetworkForType(int type) { 494 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 495 return mTypeLists[type].get(0); 496 } else { 497 return null; 498 } 499 } 500 501 private void maybeLogBroadcast(NetworkAgentInfo nai, DetailedState state, int type, 502 boolean isDefaultNetwork) { 503 if (DBG) { 504 log("Sending " + state + 505 " broadcast for type " + type + " " + nai.name() + 506 " isDefaultNetwork=" + isDefaultNetwork); 507 } 508 } 509 510 /** Adds the given network to the specified legacy type list. */ 511 public void add(int type, NetworkAgentInfo nai) { 512 if (!isTypeSupported(type)) { 513 return; // Invalid network type. 514 } 515 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 516 517 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 518 if (list.contains(nai)) { 519 return; 520 } 521 522 list.add(nai); 523 524 // Send a broadcast if this is the first network of its type or if it's the default. 525 final boolean isDefaultNetwork = isDefaultNetwork(nai); 526 if (list.size() == 1 || isDefaultNetwork) { 527 maybeLogBroadcast(nai, DetailedState.CONNECTED, type, isDefaultNetwork); 528 sendLegacyNetworkBroadcast(nai, DetailedState.CONNECTED, type); 529 } 530 } 531 532 /** Removes the given network from the specified legacy type list. */ 533 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 534 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 535 if (list == null || list.isEmpty()) { 536 return; 537 } 538 539 final boolean wasFirstNetwork = list.get(0).equals(nai); 540 541 if (!list.remove(nai)) { 542 return; 543 } 544 545 final DetailedState state = DetailedState.DISCONNECTED; 546 547 if (wasFirstNetwork || wasDefault) { 548 maybeLogBroadcast(nai, state, type, wasDefault); 549 sendLegacyNetworkBroadcast(nai, state, type); 550 } 551 552 if (!list.isEmpty() && wasFirstNetwork) { 553 if (DBG) log("Other network available for type " + type + 554 ", sending connected broadcast"); 555 final NetworkAgentInfo replacement = list.get(0); 556 maybeLogBroadcast(replacement, state, type, isDefaultNetwork(replacement)); 557 sendLegacyNetworkBroadcast(replacement, state, type); 558 } 559 } 560 561 /** Removes the given network from all legacy type lists. */ 562 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 563 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 564 for (int type = 0; type < mTypeLists.length; type++) { 565 remove(type, nai, wasDefault); 566 } 567 } 568 569 // send out another legacy broadcast - currently only used for suspend/unsuspend 570 // toggle 571 public void update(NetworkAgentInfo nai) { 572 final boolean isDefault = isDefaultNetwork(nai); 573 final DetailedState state = nai.networkInfo.getDetailedState(); 574 for (int type = 0; type < mTypeLists.length; type++) { 575 final ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 576 final boolean contains = (list != null && list.contains(nai)); 577 final boolean isFirst = (list != null && list.size() > 0 && nai == list.get(0)); 578 if (isFirst || (contains && isDefault)) { 579 maybeLogBroadcast(nai, state, type, isDefault); 580 sendLegacyNetworkBroadcast(nai, state, type); 581 } 582 } 583 } 584 585 private String naiToString(NetworkAgentInfo nai) { 586 String name = (nai != null) ? nai.name() : "null"; 587 String state = (nai.networkInfo != null) ? 588 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 589 "???/???"; 590 return name + " " + state; 591 } 592 593 public void dump(IndentingPrintWriter pw) { 594 pw.println("mLegacyTypeTracker:"); 595 pw.increaseIndent(); 596 pw.print("Supported types:"); 597 for (int type = 0; type < mTypeLists.length; type++) { 598 if (mTypeLists[type] != null) pw.print(" " + type); 599 } 600 pw.println(); 601 pw.println("Current state:"); 602 pw.increaseIndent(); 603 for (int type = 0; type < mTypeLists.length; type++) { 604 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 605 for (NetworkAgentInfo nai : mTypeLists[type]) { 606 pw.println(type + " " + naiToString(nai)); 607 } 608 } 609 pw.decreaseIndent(); 610 pw.decreaseIndent(); 611 pw.println(); 612 } 613 614 // This class needs its own log method because it has a different TAG. 615 private void log(String s) { 616 Slog.d(TAG, s); 617 } 618 619 } 620 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 621 622 @VisibleForTesting 623 protected HandlerThread createHandlerThread() { 624 return new HandlerThread("ConnectivityServiceThread"); 625 } 626 627 public ConnectivityService(Context context, INetworkManagementService netManager, 628 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 629 if (DBG) log("ConnectivityService starting up"); 630 631 mDefaultRequest = createInternetRequestForTransport(-1); 632 NetworkRequestInfo defaultNRI = new NetworkRequestInfo(null, mDefaultRequest, 633 new Binder(), NetworkRequestInfo.REQUEST); 634 mNetworkRequests.put(mDefaultRequest, defaultNRI); 635 mNetworkRequestInfoLogs.log("REGISTER " + defaultNRI); 636 637 mDefaultMobileDataRequest = createInternetRequestForTransport( 638 NetworkCapabilities.TRANSPORT_CELLULAR); 639 640 mHandlerThread = createHandlerThread(); 641 mHandlerThread.start(); 642 mHandler = new InternalHandler(mHandlerThread.getLooper()); 643 mTrackerHandler = new NetworkStateTrackerHandler(mHandlerThread.getLooper()); 644 645 // setup our unique device name 646 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 647 String id = Settings.Secure.getString(context.getContentResolver(), 648 Settings.Secure.ANDROID_ID); 649 if (id != null && id.length() > 0) { 650 String name = new String("android-").concat(id); 651 SystemProperties.set("net.hostname", name); 652 } 653 } 654 655 // read our default dns server ip 656 String dns = Settings.Global.getString(context.getContentResolver(), 657 Settings.Global.DEFAULT_DNS_SERVER); 658 if (dns == null || dns.length() == 0) { 659 dns = context.getResources().getString( 660 com.android.internal.R.string.config_default_dns_server); 661 } 662 try { 663 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 664 } catch (IllegalArgumentException e) { 665 loge("Error setting defaultDns using " + dns); 666 } 667 668 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 669 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 670 671 mContext = checkNotNull(context, "missing Context"); 672 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 673 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 674 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 675 mKeyStore = KeyStore.getInstance(); 676 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 677 678 try { 679 mPolicyManager.registerListener(mPolicyListener); 680 } catch (RemoteException e) { 681 // ouch, no rules updates means some processes may never get network 682 loge("unable to register INetworkPolicyListener" + e.toString()); 683 } 684 685 final PowerManager powerManager = (PowerManager) context.getSystemService( 686 Context.POWER_SERVICE); 687 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 688 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 689 com.android.internal.R.integer.config_networkTransitionTimeout); 690 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 691 692 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 693 694 // TODO: What is the "correct" way to do determine if this is a wifi only device? 695 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 696 log("wifiOnly=" + wifiOnly); 697 String[] naStrings = context.getResources().getStringArray( 698 com.android.internal.R.array.networkAttributes); 699 for (String naString : naStrings) { 700 try { 701 NetworkConfig n = new NetworkConfig(naString); 702 if (VDBG) log("naString=" + naString + " config=" + n); 703 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 704 loge("Error in networkAttributes - ignoring attempt to define type " + 705 n.type); 706 continue; 707 } 708 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 709 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 710 n.type); 711 continue; 712 } 713 if (mNetConfigs[n.type] != null) { 714 loge("Error in networkAttributes - ignoring attempt to redefine type " + 715 n.type); 716 continue; 717 } 718 mLegacyTypeTracker.addSupportedType(n.type); 719 720 mNetConfigs[n.type] = n; 721 mNetworksDefined++; 722 } catch(Exception e) { 723 // ignore it - leave the entry null 724 } 725 } 726 727 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 728 if (mNetConfigs[TYPE_VPN] == null) { 729 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 730 // don't need to add TYPE_VPN to mNetConfigs. 731 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 732 mNetworksDefined++; // used only in the log() statement below. 733 } 734 735 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 736 737 mProtectedNetworks = new ArrayList<Integer>(); 738 int[] protectedNetworks = context.getResources().getIntArray( 739 com.android.internal.R.array.config_protectedNetworks); 740 for (int p : protectedNetworks) { 741 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 742 mProtectedNetworks.add(p); 743 } else { 744 if (DBG) loge("Ignoring protectedNetwork " + p); 745 } 746 } 747 748 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 749 && SystemProperties.get("ro.build.type").equals("eng"); 750 751 mTethering = new Tethering(mContext, mNetd, statsService); 752 753 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 754 755 //set up the listener for user state for creating user VPNs 756 IntentFilter intentFilter = new IntentFilter(); 757 intentFilter.addAction(Intent.ACTION_USER_STARTING); 758 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 759 intentFilter.addAction(Intent.ACTION_USER_ADDED); 760 intentFilter.addAction(Intent.ACTION_USER_REMOVED); 761 intentFilter.addAction(Intent.ACTION_USER_UNLOCKED); 762 mContext.registerReceiverAsUser( 763 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 764 765 try { 766 mNetd.registerObserver(mTethering); 767 mNetd.registerObserver(mDataActivityObserver); 768 } catch (RemoteException e) { 769 loge("Error registering observer :" + e); 770 } 771 772 if (DBG) { 773 mInetLog = new ArrayList(); 774 } 775 776 mSettingsObserver = new SettingsObserver(mContext, mHandler); 777 registerSettingsCallbacks(); 778 779 mDataConnectionStats = new DataConnectionStats(mContext); 780 mDataConnectionStats.startMonitoring(); 781 782 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 783 784 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 785 786 mKeepaliveTracker = new KeepaliveTracker(mHandler); 787 } 788 789 private NetworkRequest createInternetRequestForTransport(int transportType) { 790 NetworkCapabilities netCap = new NetworkCapabilities(); 791 netCap.addCapability(NET_CAPABILITY_INTERNET); 792 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 793 if (transportType > -1) { 794 netCap.addTransportType(transportType); 795 } 796 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 797 } 798 799 private void handleMobileDataAlwaysOn() { 800 final boolean enable = (Settings.Global.getInt( 801 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 802 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 803 if (enable == isEnabled) { 804 return; // Nothing to do. 805 } 806 807 if (enable) { 808 handleRegisterNetworkRequest(new NetworkRequestInfo( 809 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestInfo.REQUEST)); 810 } else { 811 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 812 } 813 } 814 815 private void registerSettingsCallbacks() { 816 // Watch for global HTTP proxy changes. 817 mSettingsObserver.observe( 818 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 819 EVENT_APPLY_GLOBAL_HTTP_PROXY); 820 821 // Watch for whether or not to keep mobile data always on. 822 mSettingsObserver.observe( 823 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 824 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 825 } 826 827 private synchronized int nextNetworkRequestId() { 828 return mNextNetworkRequestId++; 829 } 830 831 @VisibleForTesting 832 protected int reserveNetId() { 833 synchronized (mNetworkForNetId) { 834 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 835 int netId = mNextNetId; 836 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 837 // Make sure NetID unused. http://b/16815182 838 if (!mNetIdInUse.get(netId)) { 839 mNetIdInUse.put(netId, true); 840 return netId; 841 } 842 } 843 } 844 throw new IllegalStateException("No free netIds"); 845 } 846 847 private NetworkState getFilteredNetworkState(int networkType, int uid) { 848 NetworkInfo info = null; 849 LinkProperties lp = null; 850 NetworkCapabilities nc = null; 851 Network network = null; 852 String subscriberId = null; 853 854 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 855 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 856 if (nai != null) { 857 synchronized (nai) { 858 info = new NetworkInfo(nai.networkInfo); 859 lp = new LinkProperties(nai.linkProperties); 860 nc = new NetworkCapabilities(nai.networkCapabilities); 861 // Network objects are outwardly immutable so there is no point to duplicating. 862 // Duplicating also precludes sharing socket factories and connection pools. 863 network = nai.network; 864 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 865 } 866 info.setType(networkType); 867 } else { 868 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 869 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 870 info.setIsAvailable(true); 871 lp = new LinkProperties(); 872 nc = new NetworkCapabilities(); 873 network = null; 874 } 875 info = getFilteredNetworkInfo(info, lp, uid); 876 } 877 878 return new NetworkState(info, lp, nc, network, subscriberId, null); 879 } 880 881 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 882 if (network == null) { 883 return null; 884 } 885 synchronized (mNetworkForNetId) { 886 return mNetworkForNetId.get(network.netId); 887 } 888 }; 889 890 private Network[] getVpnUnderlyingNetworks(int uid) { 891 if (!mLockdownEnabled) { 892 int user = UserHandle.getUserId(uid); 893 synchronized (mVpns) { 894 Vpn vpn = mVpns.get(user); 895 if (vpn != null && vpn.appliesToUid(uid)) { 896 return vpn.getUnderlyingNetworks(); 897 } 898 } 899 } 900 return null; 901 } 902 903 private NetworkState getUnfilteredActiveNetworkState(int uid) { 904 NetworkInfo info = null; 905 LinkProperties lp = null; 906 NetworkCapabilities nc = null; 907 Network network = null; 908 String subscriberId = null; 909 910 NetworkAgentInfo nai = getDefaultNetwork(); 911 912 final Network[] networks = getVpnUnderlyingNetworks(uid); 913 if (networks != null) { 914 // getUnderlyingNetworks() returns: 915 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 916 // empty array => the VPN explicitly said "no default network". 917 // non-empty array => the VPN specified one or more default networks; we use the 918 // first one. 919 if (networks.length > 0) { 920 nai = getNetworkAgentInfoForNetwork(networks[0]); 921 } else { 922 nai = null; 923 } 924 } 925 926 if (nai != null) { 927 synchronized (nai) { 928 info = new NetworkInfo(nai.networkInfo); 929 lp = new LinkProperties(nai.linkProperties); 930 nc = new NetworkCapabilities(nai.networkCapabilities); 931 // Network objects are outwardly immutable so there is no point to duplicating. 932 // Duplicating also precludes sharing socket factories and connection pools. 933 network = nai.network; 934 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 935 } 936 } 937 938 return new NetworkState(info, lp, nc, network, subscriberId, null); 939 } 940 941 /** 942 * Check if UID should be blocked from using the network with the given LinkProperties. 943 */ 944 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 945 final boolean networkCostly; 946 final int uidRules; 947 948 final String iface = (lp == null ? "" : lp.getInterfaceName()); 949 synchronized (mRulesLock) { 950 networkCostly = mMeteredIfaces.contains(iface); 951 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 952 } 953 954 if (uidRules == RULE_REJECT_ALL) { 955 return true; 956 } else if ((uidRules == RULE_REJECT_METERED) && networkCostly) { 957 return true; 958 } else { 959 return false; 960 } 961 } 962 963 private void maybeLogBlockedNetworkInfo(NetworkInfo ni, int uid) { 964 if (ni == null || !LOGD_BLOCKED_NETWORKINFO) return; 965 boolean removed = false; 966 boolean added = false; 967 synchronized (mBlockedAppUids) { 968 if (ni.getDetailedState() == DetailedState.BLOCKED && mBlockedAppUids.add(uid)) { 969 added = true; 970 } else if (ni.isConnected() && mBlockedAppUids.remove(uid)) { 971 removed = true; 972 } 973 } 974 if (added) log("Returning blocked NetworkInfo to uid=" + uid); 975 else if (removed) log("Returning unblocked NetworkInfo to uid=" + uid); 976 } 977 978 /** 979 * Return a filtered {@link NetworkInfo}, potentially marked 980 * {@link DetailedState#BLOCKED} based on 981 * {@link #isNetworkWithLinkPropertiesBlocked}. 982 */ 983 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 984 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 985 // network is blocked; clone and override state 986 info = new NetworkInfo(info); 987 info.setDetailedState(DetailedState.BLOCKED, null, null); 988 } 989 if (info != null && mLockdownTracker != null) { 990 info = mLockdownTracker.augmentNetworkInfo(info); 991 if (VDBG) log("returning Locked NetworkInfo"); 992 } 993 return info; 994 } 995 996 /** 997 * Return NetworkInfo for the active (i.e., connected) network interface. 998 * It is assumed that at most one network is active at a time. If more 999 * than one is active, it is indeterminate which will be returned. 1000 * @return the info for the active network, or {@code null} if none is 1001 * active 1002 */ 1003 @Override 1004 public NetworkInfo getActiveNetworkInfo() { 1005 enforceAccessPermission(); 1006 final int uid = Binder.getCallingUid(); 1007 NetworkState state = getUnfilteredActiveNetworkState(uid); 1008 NetworkInfo ni = getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1009 maybeLogBlockedNetworkInfo(ni, uid); 1010 return ni; 1011 } 1012 1013 @Override 1014 public Network getActiveNetwork() { 1015 enforceAccessPermission(); 1016 final int uid = Binder.getCallingUid(); 1017 final int user = UserHandle.getUserId(uid); 1018 int vpnNetId = NETID_UNSET; 1019 synchronized (mVpns) { 1020 final Vpn vpn = mVpns.get(user); 1021 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 1022 } 1023 NetworkAgentInfo nai; 1024 if (vpnNetId != NETID_UNSET) { 1025 synchronized (mNetworkForNetId) { 1026 nai = mNetworkForNetId.get(vpnNetId); 1027 } 1028 if (nai != null) return nai.network; 1029 } 1030 nai = getDefaultNetwork(); 1031 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 1032 return nai != null ? nai.network : null; 1033 } 1034 1035 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1036 enforceAccessPermission(); 1037 final int uid = Binder.getCallingUid(); 1038 NetworkState state = getUnfilteredActiveNetworkState(uid); 1039 return state.networkInfo; 1040 } 1041 1042 @Override 1043 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1044 enforceConnectivityInternalPermission(); 1045 NetworkState state = getUnfilteredActiveNetworkState(uid); 1046 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1047 } 1048 1049 @Override 1050 public NetworkInfo getNetworkInfo(int networkType) { 1051 enforceAccessPermission(); 1052 final int uid = Binder.getCallingUid(); 1053 if (getVpnUnderlyingNetworks(uid) != null) { 1054 // A VPN is active, so we may need to return one of its underlying networks. This 1055 // information is not available in LegacyTypeTracker, so we have to get it from 1056 // getUnfilteredActiveNetworkState. 1057 NetworkState state = getUnfilteredActiveNetworkState(uid); 1058 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1059 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1060 } 1061 } 1062 NetworkState state = getFilteredNetworkState(networkType, uid); 1063 return state.networkInfo; 1064 } 1065 1066 @Override 1067 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1068 enforceAccessPermission(); 1069 final int uid = Binder.getCallingUid(); 1070 NetworkInfo info = null; 1071 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1072 if (nai != null) { 1073 synchronized (nai) { 1074 info = new NetworkInfo(nai.networkInfo); 1075 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1076 } 1077 } 1078 return info; 1079 } 1080 1081 @Override 1082 public NetworkInfo[] getAllNetworkInfo() { 1083 enforceAccessPermission(); 1084 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1085 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1086 networkType++) { 1087 NetworkInfo info = getNetworkInfo(networkType); 1088 if (info != null) { 1089 result.add(info); 1090 } 1091 } 1092 return result.toArray(new NetworkInfo[result.size()]); 1093 } 1094 1095 @Override 1096 public Network getNetworkForType(int networkType) { 1097 enforceAccessPermission(); 1098 final int uid = Binder.getCallingUid(); 1099 NetworkState state = getFilteredNetworkState(networkType, uid); 1100 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1101 return state.network; 1102 } 1103 return null; 1104 } 1105 1106 @Override 1107 public Network[] getAllNetworks() { 1108 enforceAccessPermission(); 1109 synchronized (mNetworkForNetId) { 1110 final Network[] result = new Network[mNetworkForNetId.size()]; 1111 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1112 result[i] = mNetworkForNetId.valueAt(i).network; 1113 } 1114 return result; 1115 } 1116 } 1117 1118 @Override 1119 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1120 // The basic principle is: if an app's traffic could possibly go over a 1121 // network, without the app doing anything multinetwork-specific, 1122 // (hence, by "default"), then include that network's capabilities in 1123 // the array. 1124 // 1125 // In the normal case, app traffic only goes over the system's default 1126 // network connection, so that's the only network returned. 1127 // 1128 // With a VPN in force, some app traffic may go into the VPN, and thus 1129 // over whatever underlying networks the VPN specifies, while other app 1130 // traffic may go over the system default network (e.g.: a split-tunnel 1131 // VPN, or an app disallowed by the VPN), so the set of networks 1132 // returned includes the VPN's underlying networks and the system 1133 // default. 1134 enforceAccessPermission(); 1135 1136 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1137 1138 NetworkAgentInfo nai = getDefaultNetwork(); 1139 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1140 if (nc != null) { 1141 result.put(nai.network, nc); 1142 } 1143 1144 if (!mLockdownEnabled) { 1145 synchronized (mVpns) { 1146 Vpn vpn = mVpns.get(userId); 1147 if (vpn != null) { 1148 Network[] networks = vpn.getUnderlyingNetworks(); 1149 if (networks != null) { 1150 for (Network network : networks) { 1151 nai = getNetworkAgentInfoForNetwork(network); 1152 nc = getNetworkCapabilitiesInternal(nai); 1153 if (nc != null) { 1154 result.put(network, nc); 1155 } 1156 } 1157 } 1158 } 1159 } 1160 } 1161 1162 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1163 out = result.values().toArray(out); 1164 return out; 1165 } 1166 1167 @Override 1168 public boolean isNetworkSupported(int networkType) { 1169 enforceAccessPermission(); 1170 return mLegacyTypeTracker.isTypeSupported(networkType); 1171 } 1172 1173 /** 1174 * Return LinkProperties for the active (i.e., connected) default 1175 * network interface. It is assumed that at most one default network 1176 * is active at a time. If more than one is active, it is indeterminate 1177 * which will be returned. 1178 * @return the ip properties for the active network, or {@code null} if 1179 * none is active 1180 */ 1181 @Override 1182 public LinkProperties getActiveLinkProperties() { 1183 enforceAccessPermission(); 1184 final int uid = Binder.getCallingUid(); 1185 NetworkState state = getUnfilteredActiveNetworkState(uid); 1186 return state.linkProperties; 1187 } 1188 1189 @Override 1190 public LinkProperties getLinkPropertiesForType(int networkType) { 1191 enforceAccessPermission(); 1192 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1193 if (nai != null) { 1194 synchronized (nai) { 1195 return new LinkProperties(nai.linkProperties); 1196 } 1197 } 1198 return null; 1199 } 1200 1201 // TODO - this should be ALL networks 1202 @Override 1203 public LinkProperties getLinkProperties(Network network) { 1204 enforceAccessPermission(); 1205 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1206 if (nai != null) { 1207 synchronized (nai) { 1208 return new LinkProperties(nai.linkProperties); 1209 } 1210 } 1211 return null; 1212 } 1213 1214 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1215 if (nai != null) { 1216 synchronized (nai) { 1217 if (nai.networkCapabilities != null) { 1218 return new NetworkCapabilities(nai.networkCapabilities); 1219 } 1220 } 1221 } 1222 return null; 1223 } 1224 1225 @Override 1226 public NetworkCapabilities getNetworkCapabilities(Network network) { 1227 enforceAccessPermission(); 1228 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1229 } 1230 1231 @Override 1232 public NetworkState[] getAllNetworkState() { 1233 // Require internal since we're handing out IMSI details 1234 enforceConnectivityInternalPermission(); 1235 1236 final ArrayList<NetworkState> result = Lists.newArrayList(); 1237 for (Network network : getAllNetworks()) { 1238 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1239 if (nai != null) { 1240 synchronized (nai) { 1241 final String subscriberId = (nai.networkMisc != null) 1242 ? nai.networkMisc.subscriberId : null; 1243 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1244 nai.networkCapabilities, network, subscriberId, null)); 1245 } 1246 } 1247 } 1248 return result.toArray(new NetworkState[result.size()]); 1249 } 1250 1251 @Override 1252 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1253 enforceAccessPermission(); 1254 final int uid = Binder.getCallingUid(); 1255 final long token = Binder.clearCallingIdentity(); 1256 try { 1257 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1258 if (state.networkInfo != null) { 1259 try { 1260 return mPolicyManager.getNetworkQuotaInfo(state); 1261 } catch (RemoteException e) { 1262 } 1263 } 1264 return null; 1265 } finally { 1266 Binder.restoreCallingIdentity(token); 1267 } 1268 } 1269 1270 @Override 1271 public boolean isActiveNetworkMetered() { 1272 enforceAccessPermission(); 1273 final int uid = Binder.getCallingUid(); 1274 final long token = Binder.clearCallingIdentity(); 1275 try { 1276 return isActiveNetworkMeteredUnchecked(uid); 1277 } finally { 1278 Binder.restoreCallingIdentity(token); 1279 } 1280 } 1281 1282 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1283 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1284 if (state.networkInfo != null) { 1285 try { 1286 return mPolicyManager.isNetworkMetered(state); 1287 } catch (RemoteException e) { 1288 } 1289 } 1290 return false; 1291 } 1292 1293 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1294 @Override 1295 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1296 int deviceType = Integer.parseInt(label); 1297 sendDataActivityBroadcast(deviceType, active, tsNanos); 1298 } 1299 }; 1300 1301 /** 1302 * Ensure that a network route exists to deliver traffic to the specified 1303 * host via the specified network interface. 1304 * @param networkType the type of the network over which traffic to the 1305 * specified host is to be routed 1306 * @param hostAddress the IP address of the host to which the route is 1307 * desired 1308 * @return {@code true} on success, {@code false} on failure 1309 */ 1310 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1311 enforceChangePermission(); 1312 if (mProtectedNetworks.contains(networkType)) { 1313 enforceConnectivityInternalPermission(); 1314 } 1315 1316 InetAddress addr; 1317 try { 1318 addr = InetAddress.getByAddress(hostAddress); 1319 } catch (UnknownHostException e) { 1320 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1321 return false; 1322 } 1323 1324 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1325 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1326 return false; 1327 } 1328 1329 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1330 if (nai == null) { 1331 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1332 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1333 } else { 1334 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1335 } 1336 return false; 1337 } 1338 1339 DetailedState netState; 1340 synchronized (nai) { 1341 netState = nai.networkInfo.getDetailedState(); 1342 } 1343 1344 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1345 if (VDBG) { 1346 log("requestRouteToHostAddress on down network " 1347 + "(" + networkType + ") - dropped" 1348 + " netState=" + netState); 1349 } 1350 return false; 1351 } 1352 1353 final int uid = Binder.getCallingUid(); 1354 final long token = Binder.clearCallingIdentity(); 1355 try { 1356 LinkProperties lp; 1357 int netId; 1358 synchronized (nai) { 1359 lp = nai.linkProperties; 1360 netId = nai.network.netId; 1361 } 1362 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1363 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1364 return ok; 1365 } finally { 1366 Binder.restoreCallingIdentity(token); 1367 } 1368 } 1369 1370 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1371 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1372 if (bestRoute == null) { 1373 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1374 } else { 1375 String iface = bestRoute.getInterface(); 1376 if (bestRoute.getGateway().equals(addr)) { 1377 // if there is no better route, add the implied hostroute for our gateway 1378 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1379 } else { 1380 // if we will connect to this through another route, add a direct route 1381 // to it's gateway 1382 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1383 } 1384 } 1385 if (DBG) log("Adding legacy route " + bestRoute + 1386 " for UID/PID " + uid + "/" + Binder.getCallingPid()); 1387 try { 1388 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1389 } catch (Exception e) { 1390 // never crash - catch them all 1391 if (DBG) loge("Exception trying to add a route: " + e); 1392 return false; 1393 } 1394 return true; 1395 } 1396 1397 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1398 @Override 1399 public void onUidRulesChanged(int uid, int uidRules) { 1400 // caller is NPMS, since we only register with them 1401 if (LOGD_RULES) { 1402 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1403 } 1404 1405 synchronized (mRulesLock) { 1406 // skip update when we've already applied rules 1407 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1408 if (oldRules == uidRules) return; 1409 1410 mUidRules.put(uid, uidRules); 1411 } 1412 1413 // TODO: notify UID when it has requested targeted updates 1414 } 1415 1416 @Override 1417 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1418 // caller is NPMS, since we only register with them 1419 if (LOGD_RULES) { 1420 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1421 } 1422 1423 synchronized (mRulesLock) { 1424 mMeteredIfaces.clear(); 1425 for (String iface : meteredIfaces) { 1426 mMeteredIfaces.add(iface); 1427 } 1428 } 1429 } 1430 1431 @Override 1432 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1433 // caller is NPMS, since we only register with them 1434 if (LOGD_RULES) { 1435 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1436 } 1437 } 1438 }; 1439 1440 /** 1441 * Require that the caller is either in the same user or has appropriate permission to interact 1442 * across users. 1443 * 1444 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1445 */ 1446 private void enforceCrossUserPermission(int userId) { 1447 if (userId == UserHandle.getCallingUserId()) { 1448 // Not a cross-user call. 1449 return; 1450 } 1451 mContext.enforceCallingOrSelfPermission( 1452 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1453 "ConnectivityService"); 1454 } 1455 1456 private void enforceInternetPermission() { 1457 mContext.enforceCallingOrSelfPermission( 1458 android.Manifest.permission.INTERNET, 1459 "ConnectivityService"); 1460 } 1461 1462 private void enforceAccessPermission() { 1463 mContext.enforceCallingOrSelfPermission( 1464 android.Manifest.permission.ACCESS_NETWORK_STATE, 1465 "ConnectivityService"); 1466 } 1467 1468 private void enforceChangePermission() { 1469 ConnectivityManager.enforceChangePermission(mContext); 1470 } 1471 1472 private void enforceTetherAccessPermission() { 1473 mContext.enforceCallingOrSelfPermission( 1474 android.Manifest.permission.ACCESS_NETWORK_STATE, 1475 "ConnectivityService"); 1476 } 1477 1478 private void enforceConnectivityInternalPermission() { 1479 mContext.enforceCallingOrSelfPermission( 1480 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1481 "ConnectivityService"); 1482 } 1483 1484 private void enforceKeepalivePermission() { 1485 mContext.enforceCallingOrSelfPermission(KeepaliveTracker.PERMISSION, "ConnectivityService"); 1486 } 1487 1488 public void sendConnectedBroadcast(NetworkInfo info) { 1489 enforceConnectivityInternalPermission(); 1490 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1491 } 1492 1493 private void sendInetConditionBroadcast(NetworkInfo info) { 1494 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1495 } 1496 1497 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1498 if (mLockdownTracker != null) { 1499 info = mLockdownTracker.augmentNetworkInfo(info); 1500 } 1501 1502 Intent intent = new Intent(bcastType); 1503 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1504 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1505 if (info.isFailover()) { 1506 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1507 info.setFailover(false); 1508 } 1509 if (info.getReason() != null) { 1510 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1511 } 1512 if (info.getExtraInfo() != null) { 1513 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1514 info.getExtraInfo()); 1515 } 1516 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1517 return intent; 1518 } 1519 1520 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1521 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1522 } 1523 1524 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1525 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1526 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1527 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1528 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1529 final long ident = Binder.clearCallingIdentity(); 1530 try { 1531 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1532 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1533 } finally { 1534 Binder.restoreCallingIdentity(ident); 1535 } 1536 } 1537 1538 private void sendStickyBroadcast(Intent intent) { 1539 synchronized(this) { 1540 if (!mSystemReady) { 1541 mInitialBroadcast = new Intent(intent); 1542 } 1543 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1544 if (DBG) { 1545 log("sendStickyBroadcast: action=" + intent.getAction()); 1546 } 1547 1548 Bundle options = null; 1549 final long ident = Binder.clearCallingIdentity(); 1550 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1551 final NetworkInfo ni = intent.getParcelableExtra( 1552 ConnectivityManager.EXTRA_NETWORK_INFO); 1553 if (ni.getType() == ConnectivityManager.TYPE_MOBILE_SUPL) { 1554 intent.setAction(ConnectivityManager.CONNECTIVITY_ACTION_SUPL); 1555 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1556 } else { 1557 BroadcastOptions opts = BroadcastOptions.makeBasic(); 1558 opts.setMaxManifestReceiverApiLevel(Build.VERSION_CODES.M); 1559 options = opts.toBundle(); 1560 } 1561 final IBatteryStats bs = BatteryStatsService.getService(); 1562 try { 1563 bs.noteConnectivityChanged(intent.getIntExtra( 1564 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1565 ni != null ? ni.getState().toString() : "?"); 1566 } catch (RemoteException e) { 1567 } 1568 } 1569 try { 1570 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL, options); 1571 } finally { 1572 Binder.restoreCallingIdentity(ident); 1573 } 1574 } 1575 } 1576 1577 void systemReady() { 1578 loadGlobalProxy(); 1579 1580 synchronized(this) { 1581 mSystemReady = true; 1582 if (mInitialBroadcast != null) { 1583 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1584 mInitialBroadcast = null; 1585 } 1586 } 1587 // load the global proxy at startup 1588 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1589 1590 // Try bringing up tracker, but KeyStore won't be ready yet for secondary users so wait 1591 // for user to unlock device too. 1592 updateLockdownVpn(); 1593 1594 // Configure whether mobile data is always on. 1595 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1596 1597 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1598 1599 mPermissionMonitor.startMonitoring(); 1600 } 1601 1602 /** 1603 * Setup data activity tracking for the given network. 1604 * 1605 * Every {@code setupDataActivityTracking} should be paired with a 1606 * {@link #removeDataActivityTracking} for cleanup. 1607 */ 1608 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1609 final String iface = networkAgent.linkProperties.getInterfaceName(); 1610 1611 final int timeout; 1612 int type = ConnectivityManager.TYPE_NONE; 1613 1614 if (networkAgent.networkCapabilities.hasTransport( 1615 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1616 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1617 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1618 10); 1619 type = ConnectivityManager.TYPE_MOBILE; 1620 } else if (networkAgent.networkCapabilities.hasTransport( 1621 NetworkCapabilities.TRANSPORT_WIFI)) { 1622 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1623 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1624 15); 1625 type = ConnectivityManager.TYPE_WIFI; 1626 } else { 1627 // do not track any other networks 1628 timeout = 0; 1629 } 1630 1631 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1632 try { 1633 mNetd.addIdleTimer(iface, timeout, type); 1634 } catch (Exception e) { 1635 // You shall not crash! 1636 loge("Exception in setupDataActivityTracking " + e); 1637 } 1638 } 1639 } 1640 1641 /** 1642 * Remove data activity tracking when network disconnects. 1643 */ 1644 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1645 final String iface = networkAgent.linkProperties.getInterfaceName(); 1646 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1647 1648 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1649 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1650 try { 1651 // the call fails silently if no idletimer setup for this interface 1652 mNetd.removeIdleTimer(iface); 1653 } catch (Exception e) { 1654 loge("Exception in removeDataActivityTracking " + e); 1655 } 1656 } 1657 } 1658 1659 /** 1660 * Reads the network specific MTU size from reources. 1661 * and set it on it's iface. 1662 */ 1663 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1664 final String iface = newLp.getInterfaceName(); 1665 final int mtu = newLp.getMtu(); 1666 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1667 if (VDBG) log("identical MTU - not setting"); 1668 return; 1669 } 1670 1671 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1672 loge("Unexpected mtu value: " + mtu + ", " + iface); 1673 return; 1674 } 1675 1676 // Cannot set MTU without interface name 1677 if (TextUtils.isEmpty(iface)) { 1678 loge("Setting MTU size with null iface."); 1679 return; 1680 } 1681 1682 try { 1683 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1684 mNetd.setMtu(iface, mtu); 1685 } catch (Exception e) { 1686 Slog.e(TAG, "exception in setMtu()" + e); 1687 } 1688 } 1689 1690 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1691 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1692 1693 // Overridden for testing purposes to avoid writing to SystemProperties. 1694 @VisibleForTesting 1695 protected int getDefaultTcpRwnd() { 1696 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1697 } 1698 1699 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1700 if (isDefaultNetwork(nai) == false) { 1701 return; 1702 } 1703 1704 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1705 String[] values = null; 1706 if (tcpBufferSizes != null) { 1707 values = tcpBufferSizes.split(","); 1708 } 1709 1710 if (values == null || values.length != 6) { 1711 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1712 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1713 values = tcpBufferSizes.split(","); 1714 } 1715 1716 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1717 1718 try { 1719 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1720 1721 final String prefix = "/sys/kernel/ipv4/tcp_"; 1722 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1723 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1724 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1725 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1726 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1727 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1728 mCurrentTcpBufferSizes = tcpBufferSizes; 1729 } catch (IOException e) { 1730 loge("Can't set TCP buffer sizes:" + e); 1731 } 1732 1733 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1734 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1735 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1736 if (rwndValue != 0) { 1737 SystemProperties.set(sysctlKey, rwndValue.toString()); 1738 } 1739 } 1740 1741 private void flushVmDnsCache() { 1742 /* 1743 * Tell the VMs to toss their DNS caches 1744 */ 1745 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1746 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1747 /* 1748 * Connectivity events can happen before boot has completed ... 1749 */ 1750 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1751 final long ident = Binder.clearCallingIdentity(); 1752 try { 1753 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1754 } finally { 1755 Binder.restoreCallingIdentity(ident); 1756 } 1757 } 1758 1759 @Override 1760 public int getRestoreDefaultNetworkDelay(int networkType) { 1761 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1762 NETWORK_RESTORE_DELAY_PROP_NAME); 1763 if(restoreDefaultNetworkDelayStr != null && 1764 restoreDefaultNetworkDelayStr.length() != 0) { 1765 try { 1766 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1767 } catch (NumberFormatException e) { 1768 } 1769 } 1770 // if the system property isn't set, use the value for the apn type 1771 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1772 1773 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1774 (mNetConfigs[networkType] != null)) { 1775 ret = mNetConfigs[networkType].restoreTime; 1776 } 1777 return ret; 1778 } 1779 1780 private boolean argsContain(String[] args, String target) { 1781 for (String arg : args) { 1782 if (arg.equals(target)) return true; 1783 } 1784 return false; 1785 } 1786 1787 @Override 1788 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1789 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1790 if (mContext.checkCallingOrSelfPermission( 1791 android.Manifest.permission.DUMP) 1792 != PackageManager.PERMISSION_GRANTED) { 1793 pw.println("Permission Denial: can't dump ConnectivityService " + 1794 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1795 Binder.getCallingUid()); 1796 return; 1797 } 1798 1799 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1800 if (argsContain(args, "--diag")) { 1801 final long DIAG_TIME_MS = 5000; 1802 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1803 // Start gathering diagnostic information. 1804 netDiags.add(new NetworkDiagnostics( 1805 nai.network, 1806 new LinkProperties(nai.linkProperties), // Must be a copy. 1807 DIAG_TIME_MS)); 1808 } 1809 1810 for (NetworkDiagnostics netDiag : netDiags) { 1811 pw.println(); 1812 netDiag.waitForMeasurements(); 1813 netDiag.dump(pw); 1814 } 1815 1816 return; 1817 } 1818 1819 pw.print("NetworkFactories for:"); 1820 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1821 pw.print(" " + nfi.name); 1822 } 1823 pw.println(); 1824 pw.println(); 1825 1826 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 1827 pw.print("Active default network: "); 1828 if (defaultNai == null) { 1829 pw.println("none"); 1830 } else { 1831 pw.println(defaultNai.network.netId); 1832 } 1833 pw.println(); 1834 1835 pw.println("Current Networks:"); 1836 pw.increaseIndent(); 1837 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1838 pw.println(nai.toString()); 1839 pw.increaseIndent(); 1840 pw.println("Requests:"); 1841 pw.increaseIndent(); 1842 for (int i = 0; i < nai.networkRequests.size(); i++) { 1843 pw.println(nai.networkRequests.valueAt(i).toString()); 1844 } 1845 pw.decreaseIndent(); 1846 pw.println("Lingered:"); 1847 pw.increaseIndent(); 1848 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1849 pw.decreaseIndent(); 1850 pw.decreaseIndent(); 1851 } 1852 pw.decreaseIndent(); 1853 pw.println(); 1854 1855 pw.println("Network Requests:"); 1856 pw.increaseIndent(); 1857 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1858 pw.println(nri.toString()); 1859 } 1860 pw.println(); 1861 pw.decreaseIndent(); 1862 1863 mLegacyTypeTracker.dump(pw); 1864 1865 synchronized (this) { 1866 pw.print("mNetTransitionWakeLock: currently " + 1867 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1868 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1869 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1870 } else { 1871 pw.println(", last requested never"); 1872 } 1873 } 1874 1875 pw.println(); 1876 mTethering.dump(fd, pw, args); 1877 1878 pw.println(); 1879 mKeepaliveTracker.dump(pw); 1880 1881 if (mInetLog != null && mInetLog.size() > 0) { 1882 pw.println(); 1883 pw.println("Inet condition reports:"); 1884 pw.increaseIndent(); 1885 for(int i = 0; i < mInetLog.size(); i++) { 1886 pw.println(mInetLog.get(i)); 1887 } 1888 pw.decreaseIndent(); 1889 } 1890 1891 if (argsContain(args, "--short") == false) { 1892 pw.println(); 1893 synchronized (mValidationLogs) { 1894 pw.println("mValidationLogs (most recent first):"); 1895 for (Pair<Network,ReadOnlyLocalLog> p : mValidationLogs) { 1896 pw.println(p.first); 1897 pw.increaseIndent(); 1898 p.second.dump(fd, pw, args); 1899 pw.decreaseIndent(); 1900 } 1901 } 1902 1903 pw.println(); 1904 pw.println("mNetworkRequestInfoLogs (most recent first):"); 1905 pw.increaseIndent(); 1906 mNetworkRequestInfoLogs.reverseDump(fd, pw, args); 1907 pw.decreaseIndent(); 1908 } 1909 } 1910 1911 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1912 if (nai.network == null) return false; 1913 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1914 if (officialNai != null && officialNai.equals(nai)) return true; 1915 if (officialNai != null || VDBG) { 1916 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1917 " - " + nai); 1918 } 1919 return false; 1920 } 1921 1922 private boolean isRequest(NetworkRequest request) { 1923 return mNetworkRequests.get(request).isRequest; 1924 } 1925 1926 // must be stateless - things change under us. 1927 private class NetworkStateTrackerHandler extends Handler { 1928 public NetworkStateTrackerHandler(Looper looper) { 1929 super(looper); 1930 } 1931 1932 @Override 1933 public void handleMessage(Message msg) { 1934 NetworkInfo info; 1935 switch (msg.what) { 1936 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1937 handleAsyncChannelHalfConnect(msg); 1938 break; 1939 } 1940 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1941 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1942 if (nai != null) nai.asyncChannel.disconnect(); 1943 break; 1944 } 1945 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1946 handleAsyncChannelDisconnected(msg); 1947 break; 1948 } 1949 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1950 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1951 if (nai == null) { 1952 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1953 } else { 1954 final NetworkCapabilities networkCapabilities = 1955 (NetworkCapabilities)msg.obj; 1956 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL) || 1957 networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 1958 Slog.wtf(TAG, "BUG: " + nai + " has CS-managed capability."); 1959 } 1960 if (nai.created && !nai.networkCapabilities.equalImmutableCapabilities( 1961 networkCapabilities)) { 1962 Slog.wtf(TAG, "BUG: " + nai + " changed immutable capabilities: " 1963 + nai.networkCapabilities + " -> " + networkCapabilities); 1964 } 1965 updateCapabilities(nai, networkCapabilities); 1966 } 1967 break; 1968 } 1969 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1970 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1971 if (nai == null) { 1972 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1973 } else { 1974 if (VDBG) { 1975 log("Update of LinkProperties for " + nai.name() + 1976 "; created=" + nai.created); 1977 } 1978 LinkProperties oldLp = nai.linkProperties; 1979 synchronized (nai) { 1980 nai.linkProperties = (LinkProperties)msg.obj; 1981 } 1982 if (nai.created) updateLinkProperties(nai, oldLp); 1983 } 1984 break; 1985 } 1986 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1987 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1988 if (nai == null) { 1989 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1990 break; 1991 } 1992 info = (NetworkInfo) msg.obj; 1993 updateNetworkInfo(nai, info); 1994 break; 1995 } 1996 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1997 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1998 if (nai == null) { 1999 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 2000 break; 2001 } 2002 Integer score = (Integer) msg.obj; 2003 if (score != null) updateNetworkScore(nai, score.intValue()); 2004 break; 2005 } 2006 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 2007 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2008 if (nai == null) { 2009 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 2010 break; 2011 } 2012 try { 2013 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2014 } catch (Exception e) { 2015 // Never crash! 2016 loge("Exception in addVpnUidRanges: " + e); 2017 } 2018 break; 2019 } 2020 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 2021 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2022 if (nai == null) { 2023 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 2024 break; 2025 } 2026 try { 2027 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2028 } catch (Exception e) { 2029 // Never crash! 2030 loge("Exception in removeVpnUidRanges: " + e); 2031 } 2032 break; 2033 } 2034 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 2035 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2036 if (nai == null) { 2037 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 2038 break; 2039 } 2040 if (nai.created && !nai.networkMisc.explicitlySelected) { 2041 loge("ERROR: created network explicitly selected."); 2042 } 2043 nai.networkMisc.explicitlySelected = true; 2044 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 2045 break; 2046 } 2047 case NetworkAgent.EVENT_PACKET_KEEPALIVE: { 2048 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2049 if (nai == null) { 2050 loge("EVENT_PACKET_KEEPALIVE from unknown NetworkAgent"); 2051 break; 2052 } 2053 mKeepaliveTracker.handleEventPacketKeepalive(nai, msg); 2054 break; 2055 } 2056 case NetworkMonitor.EVENT_NETWORK_TESTED: { 2057 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2058 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_TESTED")) { 2059 final boolean valid = 2060 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2061 if (DBG) log(nai.name() + " validation " + (valid ? " passed" : "failed")); 2062 if (valid != nai.lastValidated) { 2063 final int oldScore = nai.getCurrentScore(); 2064 nai.lastValidated = valid; 2065 nai.everValidated |= valid; 2066 updateCapabilities(nai, nai.networkCapabilities); 2067 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2068 if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); 2069 } 2070 updateInetCondition(nai); 2071 // Let the NetworkAgent know the state of its network 2072 nai.asyncChannel.sendMessage( 2073 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2074 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2075 0, null); 2076 } 2077 break; 2078 } 2079 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2080 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2081 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 2082 handleLingerComplete(nai); 2083 } 2084 break; 2085 } 2086 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2087 final int netId = msg.arg2; 2088 final boolean visible = (msg.arg1 != 0); 2089 final NetworkAgentInfo nai; 2090 synchronized (mNetworkForNetId) { 2091 nai = mNetworkForNetId.get(netId); 2092 } 2093 // If captive portal status has changed, update capabilities. 2094 if (nai != null && (visible != nai.lastCaptivePortalDetected)) { 2095 nai.lastCaptivePortalDetected = visible; 2096 nai.everCaptivePortalDetected |= visible; 2097 updateCapabilities(nai, nai.networkCapabilities); 2098 } 2099 if (!visible) { 2100 setProvNotificationVisibleIntent(false, netId, null, 0, null, null, false); 2101 } else { 2102 if (nai == null) { 2103 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2104 break; 2105 } 2106 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2107 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), 2108 (PendingIntent)msg.obj, nai.networkMisc.explicitlySelected); 2109 } 2110 break; 2111 } 2112 } 2113 } 2114 } 2115 2116 private void linger(NetworkAgentInfo nai) { 2117 nai.lingering = true; 2118 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 2119 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 2120 } 2121 2122 // Cancel any lingering so the linger timeout doesn't teardown a network. 2123 // This should be called when a network begins satisfying a NetworkRequest. 2124 // Note: depending on what state the NetworkMonitor is in (e.g., 2125 // if it's awaiting captive portal login, or if validation failed), this 2126 // may trigger a re-evaluation of the network. 2127 private void unlinger(NetworkAgentInfo nai) { 2128 nai.networkLingered.clear(); 2129 if (!nai.lingering) return; 2130 nai.lingering = false; 2131 if (VDBG) log("Canceling linger of " + nai.name()); 2132 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2133 } 2134 2135 private void handleAsyncChannelHalfConnect(Message msg) { 2136 AsyncChannel ac = (AsyncChannel) msg.obj; 2137 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2138 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2139 if (VDBG) log("NetworkFactory connected"); 2140 // A network factory has connected. Send it all current NetworkRequests. 2141 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2142 if (nri.isRequest == false) continue; 2143 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2144 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2145 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2146 } 2147 } else { 2148 loge("Error connecting NetworkFactory"); 2149 mNetworkFactoryInfos.remove(msg.obj); 2150 } 2151 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2152 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2153 if (VDBG) log("NetworkAgent connected"); 2154 // A network agent has requested a connection. Establish the connection. 2155 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2156 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2157 } else { 2158 loge("Error connecting NetworkAgent"); 2159 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2160 if (nai != null) { 2161 final boolean wasDefault = isDefaultNetwork(nai); 2162 synchronized (mNetworkForNetId) { 2163 mNetworkForNetId.remove(nai.network.netId); 2164 mNetIdInUse.delete(nai.network.netId); 2165 } 2166 // Just in case. 2167 mLegacyTypeTracker.remove(nai, wasDefault); 2168 } 2169 } 2170 } 2171 } 2172 2173 private void handleAsyncChannelDisconnected(Message msg) { 2174 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2175 if (nai != null) { 2176 if (DBG) { 2177 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2178 } 2179 // A network agent has disconnected. 2180 // TODO - if we move the logic to the network agent (have them disconnect 2181 // because they lost all their requests or because their score isn't good) 2182 // then they would disconnect organically, report their new state and then 2183 // disconnect the channel. 2184 if (nai.networkInfo.isConnected()) { 2185 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2186 null, null); 2187 } 2188 final boolean wasDefault = isDefaultNetwork(nai); 2189 if (wasDefault) { 2190 mDefaultInetConditionPublished = 0; 2191 } 2192 notifyIfacesChangedForNetworkStats(); 2193 // TODO - we shouldn't send CALLBACK_LOST to requests that can be satisfied 2194 // by other networks that are already connected. Perhaps that can be done by 2195 // sending all CALLBACK_LOST messages (for requests, not listens) at the end 2196 // of rematchAllNetworksAndRequests 2197 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2198 mKeepaliveTracker.handleStopAllKeepalives(nai, 2199 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 2200 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2201 if (nai.apfFilter != null) nai.apfFilter.shutdown(); 2202 mNetworkAgentInfos.remove(msg.replyTo); 2203 updateClat(null, nai.linkProperties, nai); 2204 synchronized (mNetworkForNetId) { 2205 // Remove the NetworkAgent, but don't mark the netId as 2206 // available until we've told netd to delete it below. 2207 mNetworkForNetId.remove(nai.network.netId); 2208 } 2209 // Remove all previously satisfied requests. 2210 for (int i = 0; i < nai.networkRequests.size(); i++) { 2211 NetworkRequest request = nai.networkRequests.valueAt(i); 2212 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2213 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2214 mNetworkForRequestId.remove(request.requestId); 2215 sendUpdatedScoreToFactories(request, 0); 2216 } 2217 } 2218 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2219 removeDataActivityTracking(nai); 2220 notifyLockdownVpn(nai); 2221 requestNetworkTransitionWakelock(nai.name()); 2222 } 2223 mLegacyTypeTracker.remove(nai, wasDefault); 2224 rematchAllNetworksAndRequests(null, 0); 2225 if (nai.created) { 2226 // Tell netd to clean up the configuration for this network 2227 // (routing rules, DNS, etc). 2228 // This may be slow as it requires a lot of netd shelling out to ip and 2229 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2230 // after we've rematched networks with requests which should make a potential 2231 // fallback network the default or requested a new network from the 2232 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2233 // long time. 2234 try { 2235 mNetd.removeNetwork(nai.network.netId); 2236 } catch (Exception e) { 2237 loge("Exception removing network: " + e); 2238 } 2239 } 2240 synchronized (mNetworkForNetId) { 2241 mNetIdInUse.delete(nai.network.netId); 2242 } 2243 } else { 2244 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2245 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2246 } 2247 } 2248 2249 // If this method proves to be too slow then we can maintain a separate 2250 // pendingIntent => NetworkRequestInfo map. 2251 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2252 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2253 Intent intent = pendingIntent.getIntent(); 2254 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2255 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2256 if (existingPendingIntent != null && 2257 existingPendingIntent.getIntent().filterEquals(intent)) { 2258 return entry.getValue(); 2259 } 2260 } 2261 return null; 2262 } 2263 2264 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2265 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2266 2267 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2268 if (existingRequest != null) { // remove the existing request. 2269 if (DBG) log("Replacing " + existingRequest.request + " with " 2270 + nri.request + " because their intents matched."); 2271 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2272 } 2273 handleRegisterNetworkRequest(nri); 2274 } 2275 2276 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2277 mNetworkRequests.put(nri.request, nri); 2278 mNetworkRequestInfoLogs.log("REGISTER " + nri); 2279 if (!nri.isRequest) { 2280 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2281 if (nri.request.networkCapabilities.hasSignalStrength() && 2282 network.satisfiesImmutableCapabilitiesOf(nri.request)) { 2283 updateSignalStrengthThresholds(network, "REGISTER", nri.request); 2284 } 2285 } 2286 } 2287 rematchAllNetworksAndRequests(null, 0); 2288 if (nri.isRequest && mNetworkForRequestId.get(nri.request.requestId) == null) { 2289 sendUpdatedScoreToFactories(nri.request, 0); 2290 } 2291 } 2292 2293 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2294 int callingUid) { 2295 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2296 if (nri != null) { 2297 handleReleaseNetworkRequest(nri.request, callingUid); 2298 } 2299 } 2300 2301 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2302 // This is whether it is satisfying any NetworkRequests or were it to become validated, 2303 // would it have a chance of satisfying any NetworkRequests. 2304 private boolean unneeded(NetworkAgentInfo nai) { 2305 if (!nai.created || nai.isVPN() || nai.lingering) return false; 2306 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2307 // If this Network is already the highest scoring Network for a request, or if 2308 // there is hope for it to become one if it validated, then it is needed. 2309 if (nri.isRequest && nai.satisfies(nri.request) && 2310 (nai.networkRequests.get(nri.request.requestId) != null || 2311 // Note that this catches two important cases: 2312 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2313 // is currently satisfying the request. This is desirable when 2314 // cellular ends up validating but WiFi does not. 2315 // 2. Unvalidated WiFi will not be reaped when validated cellular 2316 // is currently satisfying the request. This is desirable when 2317 // WiFi ends up validating and out scoring cellular. 2318 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2319 nai.getCurrentScoreAsValidated())) { 2320 return false; 2321 } 2322 } 2323 return true; 2324 } 2325 2326 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2327 NetworkRequestInfo nri = mNetworkRequests.get(request); 2328 if (nri != null) { 2329 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2330 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2331 return; 2332 } 2333 if (DBG) log("releasing NetworkRequest " + request); 2334 nri.unlinkDeathRecipient(); 2335 mNetworkRequests.remove(request); 2336 mNetworkRequestInfoLogs.log("RELEASE " + nri); 2337 if (nri.isRequest) { 2338 // Find all networks that are satisfying this request and remove the request 2339 // from their request lists. 2340 // TODO - it's my understanding that for a request there is only a single 2341 // network satisfying it, so this loop is wasteful 2342 boolean wasKept = false; 2343 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2344 if (nai.networkRequests.get(nri.request.requestId) != null) { 2345 nai.networkRequests.remove(nri.request.requestId); 2346 if (DBG) { 2347 log(" Removing from current network " + nai.name() + 2348 ", leaving " + nai.networkRequests.size() + 2349 " requests."); 2350 } 2351 if (unneeded(nai)) { 2352 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2353 teardownUnneededNetwork(nai); 2354 } else { 2355 // suspect there should only be one pass through here 2356 // but if any were kept do the check below 2357 wasKept |= true; 2358 } 2359 } 2360 } 2361 2362 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2363 if (nai != null) { 2364 mNetworkForRequestId.remove(nri.request.requestId); 2365 } 2366 // Maintain the illusion. When this request arrived, we might have pretended 2367 // that a network connected to serve it, even though the network was already 2368 // connected. Now that this request has gone away, we might have to pretend 2369 // that the network disconnected. LegacyTypeTracker will generate that 2370 // phantom disconnect for this type. 2371 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2372 boolean doRemove = true; 2373 if (wasKept) { 2374 // check if any of the remaining requests for this network are for the 2375 // same legacy type - if so, don't remove the nai 2376 for (int i = 0; i < nai.networkRequests.size(); i++) { 2377 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2378 if (otherRequest.legacyType == nri.request.legacyType && 2379 isRequest(otherRequest)) { 2380 if (DBG) log(" still have other legacy request - leaving"); 2381 doRemove = false; 2382 } 2383 } 2384 } 2385 2386 if (doRemove) { 2387 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2388 } 2389 } 2390 2391 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2392 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2393 nri.request); 2394 } 2395 } else { 2396 // listens don't have a singular affectedNetwork. Check all networks to see 2397 // if this listen request applies and remove it. 2398 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2399 nai.networkRequests.remove(nri.request.requestId); 2400 if (nri.request.networkCapabilities.hasSignalStrength() && 2401 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 2402 updateSignalStrengthThresholds(nai, "RELEASE", nri.request); 2403 } 2404 } 2405 } 2406 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2407 } 2408 } 2409 2410 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2411 enforceConnectivityInternalPermission(); 2412 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2413 accept ? 1 : 0, always ? 1: 0, network)); 2414 } 2415 2416 public void pushApfProgramToNetwork(NetworkAgentInfo nai, byte[] program) { 2417 enforceConnectivityInternalPermission(); 2418 Message msg = mHandler.obtainMessage(EVENT_PUSH_APF_PROGRAM_TO_NETWORK, program); 2419 msg.replyTo = nai.messenger; 2420 mHandler.sendMessage(msg); 2421 } 2422 2423 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2424 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2425 " accept=" + accept + " always=" + always); 2426 2427 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2428 if (nai == null) { 2429 // Nothing to do. 2430 return; 2431 } 2432 2433 if (nai.everValidated) { 2434 // The network validated while the dialog box was up. Take no action. 2435 return; 2436 } 2437 2438 if (!nai.networkMisc.explicitlySelected) { 2439 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2440 } 2441 2442 if (accept != nai.networkMisc.acceptUnvalidated) { 2443 int oldScore = nai.getCurrentScore(); 2444 nai.networkMisc.acceptUnvalidated = accept; 2445 rematchAllNetworksAndRequests(nai, oldScore); 2446 sendUpdatedScoreToFactories(nai); 2447 } 2448 2449 if (always) { 2450 nai.asyncChannel.sendMessage( 2451 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2452 } 2453 2454 if (!accept) { 2455 // Tell the NetworkAgent to not automatically reconnect to the network. 2456 nai.asyncChannel.sendMessage(NetworkAgent.CMD_PREVENT_AUTOMATIC_RECONNECT); 2457 // Teardown the nework. 2458 teardownUnneededNetwork(nai); 2459 } 2460 2461 } 2462 2463 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2464 if (DBG) log("scheduleUnvalidatedPrompt " + nai.network); 2465 mHandler.sendMessageDelayed( 2466 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2467 PROMPT_UNVALIDATED_DELAY_MS); 2468 } 2469 2470 private void handlePromptUnvalidated(Network network) { 2471 if (DBG) log("handlePromptUnvalidated " + network); 2472 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2473 2474 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2475 // we haven't already been told to switch to it regardless of whether it validated or not. 2476 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2477 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2478 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2479 return; 2480 } 2481 2482 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2483 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2484 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2485 intent.setClassName("com.android.settings", 2486 "com.android.settings.wifi.WifiNoInternetDialog"); 2487 2488 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2489 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2490 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2491 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent, true); 2492 } 2493 2494 private class InternalHandler extends Handler { 2495 public InternalHandler(Looper looper) { 2496 super(looper); 2497 } 2498 2499 @Override 2500 public void handleMessage(Message msg) { 2501 switch (msg.what) { 2502 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2503 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2504 String causedBy = null; 2505 synchronized (ConnectivityService.this) { 2506 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2507 mNetTransitionWakeLock.isHeld()) { 2508 mNetTransitionWakeLock.release(); 2509 causedBy = mNetTransitionWakeLockCausedBy; 2510 } else { 2511 break; 2512 } 2513 } 2514 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2515 log("Failed to find a new network - expiring NetTransition Wakelock"); 2516 } else { 2517 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2518 " cleared because we found a replacement network"); 2519 } 2520 break; 2521 } 2522 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2523 handleDeprecatedGlobalHttpProxy(); 2524 break; 2525 } 2526 case EVENT_PROXY_HAS_CHANGED: { 2527 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2528 break; 2529 } 2530 case EVENT_REGISTER_NETWORK_FACTORY: { 2531 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2532 break; 2533 } 2534 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2535 handleUnregisterNetworkFactory((Messenger)msg.obj); 2536 break; 2537 } 2538 case EVENT_REGISTER_NETWORK_AGENT: { 2539 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2540 break; 2541 } 2542 case EVENT_REGISTER_NETWORK_REQUEST: 2543 case EVENT_REGISTER_NETWORK_LISTENER: { 2544 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2545 break; 2546 } 2547 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2548 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2549 handleRegisterNetworkRequestWithIntent(msg); 2550 break; 2551 } 2552 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2553 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2554 break; 2555 } 2556 case EVENT_RELEASE_NETWORK_REQUEST: { 2557 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2558 break; 2559 } 2560 case EVENT_SET_ACCEPT_UNVALIDATED: { 2561 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2562 break; 2563 } 2564 case EVENT_PROMPT_UNVALIDATED: { 2565 handlePromptUnvalidated((Network) msg.obj); 2566 break; 2567 } 2568 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2569 handleMobileDataAlwaysOn(); 2570 break; 2571 } 2572 case EVENT_PUSH_APF_PROGRAM_TO_NETWORK: { 2573 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2574 if (nai == null) { 2575 loge("EVENT_PUSH_APF_PROGRAM_TO_NETWORK from unknown NetworkAgent"); 2576 } else { 2577 nai.asyncChannel.sendMessage(NetworkAgent.CMD_PUSH_APF_PROGRAM, 2578 (byte[]) msg.obj); 2579 } 2580 break; 2581 } 2582 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2583 case NetworkAgent.CMD_START_PACKET_KEEPALIVE: { 2584 mKeepaliveTracker.handleStartKeepalive(msg); 2585 break; 2586 } 2587 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2588 case NetworkAgent.CMD_STOP_PACKET_KEEPALIVE: { 2589 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork((Network) msg.obj); 2590 int slot = msg.arg1; 2591 int reason = msg.arg2; 2592 mKeepaliveTracker.handleStopKeepalive(nai, slot, reason); 2593 break; 2594 } 2595 case EVENT_SYSTEM_READY: { 2596 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2597 nai.networkMonitor.systemReady = true; 2598 } 2599 break; 2600 } 2601 } 2602 } 2603 } 2604 2605 // javadoc from interface 2606 public int tether(String iface) { 2607 ConnectivityManager.enforceTetherChangePermission(mContext); 2608 if (isTetheringSupported()) { 2609 return mTethering.tether(iface); 2610 } else { 2611 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2612 } 2613 } 2614 2615 // javadoc from interface 2616 public int untether(String iface) { 2617 ConnectivityManager.enforceTetherChangePermission(mContext); 2618 2619 if (isTetheringSupported()) { 2620 return mTethering.untether(iface); 2621 } else { 2622 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2623 } 2624 } 2625 2626 // javadoc from interface 2627 public int getLastTetherError(String iface) { 2628 enforceTetherAccessPermission(); 2629 2630 if (isTetheringSupported()) { 2631 return mTethering.getLastTetherError(iface); 2632 } else { 2633 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2634 } 2635 } 2636 2637 // TODO - proper iface API for selection by property, inspection, etc 2638 public String[] getTetherableUsbRegexs() { 2639 enforceTetherAccessPermission(); 2640 if (isTetheringSupported()) { 2641 return mTethering.getTetherableUsbRegexs(); 2642 } else { 2643 return new String[0]; 2644 } 2645 } 2646 2647 public String[] getTetherableWifiRegexs() { 2648 enforceTetherAccessPermission(); 2649 if (isTetheringSupported()) { 2650 return mTethering.getTetherableWifiRegexs(); 2651 } else { 2652 return new String[0]; 2653 } 2654 } 2655 2656 public String[] getTetherableBluetoothRegexs() { 2657 enforceTetherAccessPermission(); 2658 if (isTetheringSupported()) { 2659 return mTethering.getTetherableBluetoothRegexs(); 2660 } else { 2661 return new String[0]; 2662 } 2663 } 2664 2665 public int setUsbTethering(boolean enable) { 2666 ConnectivityManager.enforceTetherChangePermission(mContext); 2667 if (isTetheringSupported()) { 2668 return mTethering.setUsbTethering(enable); 2669 } else { 2670 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2671 } 2672 } 2673 2674 // TODO - move iface listing, queries, etc to new module 2675 // javadoc from interface 2676 public String[] getTetherableIfaces() { 2677 enforceTetherAccessPermission(); 2678 return mTethering.getTetherableIfaces(); 2679 } 2680 2681 public String[] getTetheredIfaces() { 2682 enforceTetherAccessPermission(); 2683 return mTethering.getTetheredIfaces(); 2684 } 2685 2686 public String[] getTetheringErroredIfaces() { 2687 enforceTetherAccessPermission(); 2688 return mTethering.getErroredIfaces(); 2689 } 2690 2691 public String[] getTetheredDhcpRanges() { 2692 enforceConnectivityInternalPermission(); 2693 return mTethering.getTetheredDhcpRanges(); 2694 } 2695 2696 // if ro.tether.denied = true we default to no tethering 2697 // gservices could set the secure setting to 1 though to enable it on a build where it 2698 // had previously been turned off. 2699 @Override 2700 public boolean isTetheringSupported() { 2701 enforceTetherAccessPermission(); 2702 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2703 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2704 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2705 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2706 return tetherEnabledInSettings && mUserManager.isAdminUser() && 2707 ((mTethering.getTetherableUsbRegexs().length != 0 || 2708 mTethering.getTetherableWifiRegexs().length != 0 || 2709 mTethering.getTetherableBluetoothRegexs().length != 0) && 2710 mTethering.getUpstreamIfaceTypes().length != 0); 2711 } 2712 2713 @Override 2714 public void startTethering(int type, ResultReceiver receiver, 2715 boolean showProvisioningUi) { 2716 ConnectivityManager.enforceTetherChangePermission(mContext); 2717 if (!isTetheringSupported()) { 2718 receiver.send(ConnectivityManager.TETHER_ERROR_UNSUPPORTED, null); 2719 return; 2720 } 2721 mTethering.startTethering(type, receiver, showProvisioningUi); 2722 } 2723 2724 @Override 2725 public void stopTethering(int type) { 2726 ConnectivityManager.enforceTetherChangePermission(mContext); 2727 mTethering.stopTethering(type); 2728 } 2729 2730 // Called when we lose the default network and have no replacement yet. 2731 // This will automatically be cleared after X seconds or a new default network 2732 // becomes CONNECTED, whichever happens first. The timer is started by the 2733 // first caller and not restarted by subsequent callers. 2734 private void requestNetworkTransitionWakelock(String forWhom) { 2735 int serialNum = 0; 2736 synchronized (this) { 2737 if (mNetTransitionWakeLock.isHeld()) return; 2738 serialNum = ++mNetTransitionWakeLockSerialNumber; 2739 mNetTransitionWakeLock.acquire(); 2740 mNetTransitionWakeLockCausedBy = forWhom; 2741 } 2742 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2743 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2744 mNetTransitionWakeLockTimeout); 2745 return; 2746 } 2747 2748 // 100 percent is full good, 0 is full bad. 2749 public void reportInetCondition(int networkType, int percentage) { 2750 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2751 if (nai == null) return; 2752 reportNetworkConnectivity(nai.network, percentage > 50); 2753 } 2754 2755 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2756 enforceAccessPermission(); 2757 enforceInternetPermission(); 2758 2759 NetworkAgentInfo nai; 2760 if (network == null) { 2761 nai = getDefaultNetwork(); 2762 } else { 2763 nai = getNetworkAgentInfoForNetwork(network); 2764 } 2765 if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || 2766 nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { 2767 return; 2768 } 2769 // Revalidate if the app report does not match our current validated state. 2770 if (hasConnectivity == nai.lastValidated) return; 2771 final int uid = Binder.getCallingUid(); 2772 if (DBG) { 2773 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2774 ") by " + uid); 2775 } 2776 synchronized (nai) { 2777 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2778 // which isn't meant to work on uncreated networks. 2779 if (!nai.created) return; 2780 2781 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2782 2783 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2784 } 2785 } 2786 2787 private ProxyInfo getDefaultProxy() { 2788 // this information is already available as a world read/writable jvm property 2789 // so this API change wouldn't have a benifit. It also breaks the passing 2790 // of proxy info to all the JVMs. 2791 // enforceAccessPermission(); 2792 synchronized (mProxyLock) { 2793 ProxyInfo ret = mGlobalProxy; 2794 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2795 return ret; 2796 } 2797 } 2798 2799 public ProxyInfo getProxyForNetwork(Network network) { 2800 if (network == null) return getDefaultProxy(); 2801 final ProxyInfo globalProxy = getGlobalProxy(); 2802 if (globalProxy != null) return globalProxy; 2803 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2804 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2805 // caller may not have. 2806 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2807 if (nai == null) return null; 2808 synchronized (nai) { 2809 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2810 if (proxyInfo == null) return null; 2811 return new ProxyInfo(proxyInfo); 2812 } 2813 } 2814 2815 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2816 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2817 // proxy is null then there is no proxy in place). 2818 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2819 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2820 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2821 proxy = null; 2822 } 2823 return proxy; 2824 } 2825 2826 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2827 // better for determining if a new proxy broadcast is necessary: 2828 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2829 // avoid unnecessary broadcasts. 2830 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2831 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2832 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2833 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2834 // all set. 2835 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2836 a = canonicalizeProxyInfo(a); 2837 b = canonicalizeProxyInfo(b); 2838 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2839 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2840 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2841 } 2842 2843 public void setGlobalProxy(ProxyInfo proxyProperties) { 2844 enforceConnectivityInternalPermission(); 2845 2846 synchronized (mProxyLock) { 2847 if (proxyProperties == mGlobalProxy) return; 2848 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2849 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2850 2851 String host = ""; 2852 int port = 0; 2853 String exclList = ""; 2854 String pacFileUrl = ""; 2855 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2856 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2857 if (!proxyProperties.isValid()) { 2858 if (DBG) 2859 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2860 return; 2861 } 2862 mGlobalProxy = new ProxyInfo(proxyProperties); 2863 host = mGlobalProxy.getHost(); 2864 port = mGlobalProxy.getPort(); 2865 exclList = mGlobalProxy.getExclusionListAsString(); 2866 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2867 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2868 } 2869 } else { 2870 mGlobalProxy = null; 2871 } 2872 ContentResolver res = mContext.getContentResolver(); 2873 final long token = Binder.clearCallingIdentity(); 2874 try { 2875 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2876 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2877 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2878 exclList); 2879 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2880 } finally { 2881 Binder.restoreCallingIdentity(token); 2882 } 2883 2884 if (mGlobalProxy == null) { 2885 proxyProperties = mDefaultProxy; 2886 } 2887 sendProxyBroadcast(proxyProperties); 2888 } 2889 } 2890 2891 private void loadGlobalProxy() { 2892 ContentResolver res = mContext.getContentResolver(); 2893 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2894 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2895 String exclList = Settings.Global.getString(res, 2896 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2897 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2898 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2899 ProxyInfo proxyProperties; 2900 if (!TextUtils.isEmpty(pacFileUrl)) { 2901 proxyProperties = new ProxyInfo(pacFileUrl); 2902 } else { 2903 proxyProperties = new ProxyInfo(host, port, exclList); 2904 } 2905 if (!proxyProperties.isValid()) { 2906 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2907 return; 2908 } 2909 2910 synchronized (mProxyLock) { 2911 mGlobalProxy = proxyProperties; 2912 } 2913 } 2914 } 2915 2916 public ProxyInfo getGlobalProxy() { 2917 // this information is already available as a world read/writable jvm property 2918 // so this API change wouldn't have a benifit. It also breaks the passing 2919 // of proxy info to all the JVMs. 2920 // enforceAccessPermission(); 2921 synchronized (mProxyLock) { 2922 return mGlobalProxy; 2923 } 2924 } 2925 2926 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2927 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2928 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2929 proxy = null; 2930 } 2931 synchronized (mProxyLock) { 2932 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2933 if (mDefaultProxy == proxy) return; // catches repeated nulls 2934 if (proxy != null && !proxy.isValid()) { 2935 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2936 return; 2937 } 2938 2939 // This call could be coming from the PacManager, containing the port of the local 2940 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2941 // global (to get the correct local port), and send a broadcast. 2942 // TODO: Switch PacManager to have its own message to send back rather than 2943 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2944 if ((mGlobalProxy != null) && (proxy != null) 2945 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2946 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2947 mGlobalProxy = proxy; 2948 sendProxyBroadcast(mGlobalProxy); 2949 return; 2950 } 2951 mDefaultProxy = proxy; 2952 2953 if (mGlobalProxy != null) return; 2954 if (!mDefaultProxyDisabled) { 2955 sendProxyBroadcast(proxy); 2956 } 2957 } 2958 } 2959 2960 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2961 // This method gets called when any network changes proxy, but the broadcast only ever contains 2962 // the default proxy (even if it hasn't changed). 2963 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2964 // world where an app might be bound to a non-default network. 2965 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2966 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2967 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2968 2969 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2970 sendProxyBroadcast(getDefaultProxy()); 2971 } 2972 } 2973 2974 private void handleDeprecatedGlobalHttpProxy() { 2975 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2976 Settings.Global.HTTP_PROXY); 2977 if (!TextUtils.isEmpty(proxy)) { 2978 String data[] = proxy.split(":"); 2979 if (data.length == 0) { 2980 return; 2981 } 2982 2983 String proxyHost = data[0]; 2984 int proxyPort = 8080; 2985 if (data.length > 1) { 2986 try { 2987 proxyPort = Integer.parseInt(data[1]); 2988 } catch (NumberFormatException e) { 2989 return; 2990 } 2991 } 2992 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2993 setGlobalProxy(p); 2994 } 2995 } 2996 2997 private void sendProxyBroadcast(ProxyInfo proxy) { 2998 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2999 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3000 if (DBG) log("sending Proxy Broadcast for " + proxy); 3001 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3002 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3003 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3004 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3005 final long ident = Binder.clearCallingIdentity(); 3006 try { 3007 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3008 } finally { 3009 Binder.restoreCallingIdentity(ident); 3010 } 3011 } 3012 3013 private static class SettingsObserver extends ContentObserver { 3014 final private HashMap<Uri, Integer> mUriEventMap; 3015 final private Context mContext; 3016 final private Handler mHandler; 3017 3018 SettingsObserver(Context context, Handler handler) { 3019 super(null); 3020 mUriEventMap = new HashMap<Uri, Integer>(); 3021 mContext = context; 3022 mHandler = handler; 3023 } 3024 3025 void observe(Uri uri, int what) { 3026 mUriEventMap.put(uri, what); 3027 final ContentResolver resolver = mContext.getContentResolver(); 3028 resolver.registerContentObserver(uri, false, this); 3029 } 3030 3031 @Override 3032 public void onChange(boolean selfChange) { 3033 Slog.wtf(TAG, "Should never be reached."); 3034 } 3035 3036 @Override 3037 public void onChange(boolean selfChange, Uri uri) { 3038 final Integer what = mUriEventMap.get(uri); 3039 if (what != null) { 3040 mHandler.obtainMessage(what.intValue()).sendToTarget(); 3041 } else { 3042 loge("No matching event to send for URI=" + uri); 3043 } 3044 } 3045 } 3046 3047 private static void log(String s) { 3048 Slog.d(TAG, s); 3049 } 3050 3051 private static void loge(String s) { 3052 Slog.e(TAG, s); 3053 } 3054 3055 private static <T> T checkNotNull(T value, String message) { 3056 if (value == null) { 3057 throw new NullPointerException(message); 3058 } 3059 return value; 3060 } 3061 3062 /** 3063 * Prepare for a VPN application. 3064 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3065 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3066 * 3067 * @param oldPackage Package name of the application which currently controls VPN, which will 3068 * be replaced. If there is no such application, this should should either be 3069 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3070 * @param newPackage Package name of the application which should gain control of VPN, or 3071 * {@code null} to disable. 3072 * @param userId User for whom to prepare the new VPN. 3073 * 3074 * @hide 3075 */ 3076 @Override 3077 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3078 int userId) { 3079 enforceCrossUserPermission(userId); 3080 throwIfLockdownEnabled(); 3081 3082 synchronized(mVpns) { 3083 Vpn vpn = mVpns.get(userId); 3084 if (vpn != null) { 3085 return vpn.prepare(oldPackage, newPackage); 3086 } else { 3087 return false; 3088 } 3089 } 3090 } 3091 3092 /** 3093 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3094 * This method is used by system-privileged apps. 3095 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3096 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3097 * 3098 * @param packageName The package for which authorization state should change. 3099 * @param userId User for whom {@code packageName} is installed. 3100 * @param authorized {@code true} if this app should be able to start a VPN connection without 3101 * explicit user approval, {@code false} if not. 3102 * 3103 * @hide 3104 */ 3105 @Override 3106 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3107 enforceCrossUserPermission(userId); 3108 3109 synchronized(mVpns) { 3110 Vpn vpn = mVpns.get(userId); 3111 if (vpn != null) { 3112 vpn.setPackageAuthorization(packageName, authorized); 3113 } 3114 } 3115 } 3116 3117 /** 3118 * Configure a TUN interface and return its file descriptor. Parameters 3119 * are encoded and opaque to this class. This method is used by VpnBuilder 3120 * and not available in ConnectivityManager. Permissions are checked in 3121 * Vpn class. 3122 * @hide 3123 */ 3124 @Override 3125 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3126 throwIfLockdownEnabled(); 3127 int user = UserHandle.getUserId(Binder.getCallingUid()); 3128 synchronized(mVpns) { 3129 return mVpns.get(user).establish(config); 3130 } 3131 } 3132 3133 /** 3134 * Start legacy VPN, controlling native daemons as needed. Creates a 3135 * secondary thread to perform connection work, returning quickly. 3136 */ 3137 @Override 3138 public void startLegacyVpn(VpnProfile profile) { 3139 throwIfLockdownEnabled(); 3140 final LinkProperties egress = getActiveLinkProperties(); 3141 if (egress == null) { 3142 throw new IllegalStateException("Missing active network connection"); 3143 } 3144 int user = UserHandle.getUserId(Binder.getCallingUid()); 3145 synchronized(mVpns) { 3146 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3147 } 3148 } 3149 3150 /** 3151 * Return the information of the ongoing legacy VPN. This method is used 3152 * by VpnSettings and not available in ConnectivityManager. Permissions 3153 * are checked in Vpn class. 3154 */ 3155 @Override 3156 public LegacyVpnInfo getLegacyVpnInfo(int userId) { 3157 enforceCrossUserPermission(userId); 3158 if (mLockdownEnabled) { 3159 return null; 3160 } 3161 3162 synchronized(mVpns) { 3163 return mVpns.get(userId).getLegacyVpnInfo(); 3164 } 3165 } 3166 3167 /** 3168 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3169 * and not available in ConnectivityManager. 3170 */ 3171 @Override 3172 public VpnInfo[] getAllVpnInfo() { 3173 enforceConnectivityInternalPermission(); 3174 if (mLockdownEnabled) { 3175 return new VpnInfo[0]; 3176 } 3177 3178 synchronized(mVpns) { 3179 List<VpnInfo> infoList = new ArrayList<>(); 3180 for (int i = 0; i < mVpns.size(); i++) { 3181 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3182 if (info != null) { 3183 infoList.add(info); 3184 } 3185 } 3186 return infoList.toArray(new VpnInfo[infoList.size()]); 3187 } 3188 } 3189 3190 /** 3191 * @return VPN information for accounting, or null if we can't retrieve all required 3192 * information, e.g primary underlying iface. 3193 */ 3194 @Nullable 3195 private VpnInfo createVpnInfo(Vpn vpn) { 3196 VpnInfo info = vpn.getVpnInfo(); 3197 if (info == null) { 3198 return null; 3199 } 3200 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3201 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3202 // the underlyingNetworks list. 3203 if (underlyingNetworks == null) { 3204 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3205 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3206 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3207 } 3208 } else if (underlyingNetworks.length > 0) { 3209 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3210 if (linkProperties != null) { 3211 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3212 } 3213 } 3214 return info.primaryUnderlyingIface == null ? null : info; 3215 } 3216 3217 /** 3218 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3219 * VpnDialogs and not available in ConnectivityManager. 3220 * Permissions are checked in Vpn class. 3221 * @hide 3222 */ 3223 @Override 3224 public VpnConfig getVpnConfig(int userId) { 3225 enforceCrossUserPermission(userId); 3226 synchronized(mVpns) { 3227 Vpn vpn = mVpns.get(userId); 3228 if (vpn != null) { 3229 return vpn.getVpnConfig(); 3230 } else { 3231 return null; 3232 } 3233 } 3234 } 3235 3236 @Override 3237 public boolean updateLockdownVpn() { 3238 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3239 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3240 return false; 3241 } 3242 3243 // Tear down existing lockdown if profile was removed 3244 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3245 if (mLockdownEnabled) { 3246 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3247 final VpnProfile profile = VpnProfile.decode( 3248 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3249 if (profile == null) { 3250 Slog.e(TAG, "Lockdown VPN configured invalid profile " + profileName); 3251 setLockdownTracker(null); 3252 return true; 3253 } 3254 int user = UserHandle.getUserId(Binder.getCallingUid()); 3255 synchronized(mVpns) { 3256 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3257 profile)); 3258 } 3259 } else { 3260 setLockdownTracker(null); 3261 } 3262 3263 return true; 3264 } 3265 3266 /** 3267 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3268 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3269 */ 3270 private void setLockdownTracker(LockdownVpnTracker tracker) { 3271 // Shutdown any existing tracker 3272 final LockdownVpnTracker existing = mLockdownTracker; 3273 mLockdownTracker = null; 3274 if (existing != null) { 3275 existing.shutdown(); 3276 } 3277 3278 try { 3279 if (tracker != null) { 3280 mNetd.setFirewallEnabled(true); 3281 mNetd.setFirewallInterfaceRule("lo", true); 3282 mLockdownTracker = tracker; 3283 mLockdownTracker.init(); 3284 } else { 3285 mNetd.setFirewallEnabled(false); 3286 } 3287 } catch (RemoteException e) { 3288 // ignored; NMS lives inside system_server 3289 } 3290 } 3291 3292 private void throwIfLockdownEnabled() { 3293 if (mLockdownEnabled) { 3294 throw new IllegalStateException("Unavailable in lockdown mode"); 3295 } 3296 } 3297 3298 /** 3299 * Sets up or tears down the always-on VPN for user {@param user} as appropriate. 3300 * 3301 * @return {@code false} in case of errors; {@code true} otherwise. 3302 */ 3303 private boolean updateAlwaysOnVpn(int user) { 3304 final String lockdownPackage = getAlwaysOnVpnPackage(user); 3305 if (lockdownPackage == null) { 3306 return true; 3307 } 3308 3309 // Create an intent to start the VPN service declared in the app's manifest. 3310 Intent serviceIntent = new Intent(VpnConfig.SERVICE_INTERFACE); 3311 serviceIntent.setPackage(lockdownPackage); 3312 3313 try { 3314 return mContext.startServiceAsUser(serviceIntent, UserHandle.of(user)) != null; 3315 } catch (RuntimeException e) { 3316 return false; 3317 } 3318 } 3319 3320 @Override 3321 public boolean setAlwaysOnVpnPackage(int userId, String packageName) { 3322 enforceConnectivityInternalPermission(); 3323 enforceCrossUserPermission(userId); 3324 3325 // Can't set always-on VPN if legacy VPN is already in lockdown mode. 3326 if (LockdownVpnTracker.isEnabled()) { 3327 return false; 3328 } 3329 3330 // If the current VPN package is the same as the new one, this is a no-op 3331 final String oldPackage = getAlwaysOnVpnPackage(userId); 3332 if (TextUtils.equals(oldPackage, packageName)) { 3333 return true; 3334 } 3335 3336 synchronized (mVpns) { 3337 Vpn vpn = mVpns.get(userId); 3338 if (vpn == null) { 3339 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3340 return false; 3341 } 3342 if (!vpn.setAlwaysOnPackage(packageName)) { 3343 return false; 3344 } 3345 if (!updateAlwaysOnVpn(userId)) { 3346 vpn.setAlwaysOnPackage(null); 3347 return false; 3348 } 3349 } 3350 return true; 3351 } 3352 3353 @Override 3354 public String getAlwaysOnVpnPackage(int userId) { 3355 enforceConnectivityInternalPermission(); 3356 enforceCrossUserPermission(userId); 3357 3358 synchronized (mVpns) { 3359 Vpn vpn = mVpns.get(userId); 3360 if (vpn == null) { 3361 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3362 return null; 3363 } 3364 return vpn.getAlwaysOnPackage(); 3365 } 3366 } 3367 3368 @Override 3369 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3370 // TODO: Remove? Any reason to trigger a provisioning check? 3371 return -1; 3372 } 3373 3374 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3375 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3376 3377 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3378 if (DBG) { 3379 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3380 + " action=" + action); 3381 } 3382 Intent intent = new Intent(action); 3383 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3384 // Concatenate the range of types onto the range of NetIDs. 3385 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3386 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3387 networkType, null, pendingIntent, false); 3388 } 3389 3390 /** 3391 * Show or hide network provisioning notifications. 3392 * 3393 * We use notifications for two purposes: to notify that a network requires sign in 3394 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3395 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3396 * particular network we can display the notification type that was most recently requested. 3397 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3398 * might first display NO_INTERNET, and then when the captive portal check completes, display 3399 * SIGN_IN. 3400 * 3401 * @param id an identifier that uniquely identifies this notification. This must match 3402 * between show and hide calls. We use the NetID value but for legacy callers 3403 * we concatenate the range of types with the range of NetIDs. 3404 */ 3405 private void setProvNotificationVisibleIntent(boolean visible, int id, 3406 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent, 3407 boolean highPriority) { 3408 if (DBG) { 3409 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3410 + " networkType=" + getNetworkTypeName(networkType) 3411 + " extraInfo=" + extraInfo + " highPriority=" + highPriority); 3412 } 3413 3414 Resources r = Resources.getSystem(); 3415 NotificationManager notificationManager = (NotificationManager) mContext 3416 .getSystemService(Context.NOTIFICATION_SERVICE); 3417 3418 if (visible) { 3419 CharSequence title; 3420 CharSequence details; 3421 int icon; 3422 if (notifyType == NotificationType.NO_INTERNET && 3423 networkType == ConnectivityManager.TYPE_WIFI) { 3424 title = r.getString(R.string.wifi_no_internet, 0); 3425 details = r.getString(R.string.wifi_no_internet_detailed); 3426 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3427 } else if (notifyType == NotificationType.SIGN_IN) { 3428 switch (networkType) { 3429 case ConnectivityManager.TYPE_WIFI: 3430 title = r.getString(R.string.wifi_available_sign_in, 0); 3431 details = r.getString(R.string.network_available_sign_in_detailed, 3432 extraInfo); 3433 icon = R.drawable.stat_notify_wifi_in_range; 3434 break; 3435 case ConnectivityManager.TYPE_MOBILE: 3436 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3437 title = r.getString(R.string.network_available_sign_in, 0); 3438 // TODO: Change this to pull from NetworkInfo once a printable 3439 // name has been added to it 3440 details = mTelephonyManager.getNetworkOperatorName(); 3441 icon = R.drawable.stat_notify_rssi_in_range; 3442 break; 3443 default: 3444 title = r.getString(R.string.network_available_sign_in, 0); 3445 details = r.getString(R.string.network_available_sign_in_detailed, 3446 extraInfo); 3447 icon = R.drawable.stat_notify_rssi_in_range; 3448 break; 3449 } 3450 } else { 3451 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3452 + getNetworkTypeName(networkType)); 3453 return; 3454 } 3455 3456 Notification notification = new Notification.Builder(mContext) 3457 .setWhen(0) 3458 .setSmallIcon(icon) 3459 .setAutoCancel(true) 3460 .setTicker(title) 3461 .setColor(mContext.getColor( 3462 com.android.internal.R.color.system_notification_accent_color)) 3463 .setContentTitle(title) 3464 .setContentText(details) 3465 .setContentIntent(intent) 3466 .setLocalOnly(true) 3467 .setPriority(highPriority ? 3468 Notification.PRIORITY_HIGH : 3469 Notification.PRIORITY_DEFAULT) 3470 .setDefaults(highPriority ? Notification.DEFAULT_ALL : 0) 3471 .setOnlyAlertOnce(true) 3472 .build(); 3473 3474 try { 3475 notificationManager.notify(NOTIFICATION_ID, id, notification); 3476 } catch (NullPointerException npe) { 3477 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3478 npe.printStackTrace(); 3479 } 3480 } else { 3481 try { 3482 notificationManager.cancel(NOTIFICATION_ID, id); 3483 } catch (NullPointerException npe) { 3484 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3485 npe.printStackTrace(); 3486 } 3487 } 3488 } 3489 3490 /** Location to an updatable file listing carrier provisioning urls. 3491 * An example: 3492 * 3493 * <?xml version="1.0" encoding="utf-8"?> 3494 * <provisioningUrls> 3495 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3496 * </provisioningUrls> 3497 */ 3498 private static final String PROVISIONING_URL_PATH = 3499 "/data/misc/radio/provisioning_urls.xml"; 3500 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3501 3502 /** XML tag for root element. */ 3503 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3504 /** XML tag for individual url */ 3505 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3506 /** XML attribute for mcc */ 3507 private static final String ATTR_MCC = "mcc"; 3508 /** XML attribute for mnc */ 3509 private static final String ATTR_MNC = "mnc"; 3510 3511 private String getProvisioningUrlBaseFromFile() { 3512 FileReader fileReader = null; 3513 XmlPullParser parser = null; 3514 Configuration config = mContext.getResources().getConfiguration(); 3515 3516 try { 3517 fileReader = new FileReader(mProvisioningUrlFile); 3518 parser = Xml.newPullParser(); 3519 parser.setInput(fileReader); 3520 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3521 3522 while (true) { 3523 XmlUtils.nextElement(parser); 3524 3525 String element = parser.getName(); 3526 if (element == null) break; 3527 3528 if (element.equals(TAG_PROVISIONING_URL)) { 3529 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3530 try { 3531 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3532 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3533 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3534 parser.next(); 3535 if (parser.getEventType() == XmlPullParser.TEXT) { 3536 return parser.getText(); 3537 } 3538 } 3539 } 3540 } catch (NumberFormatException e) { 3541 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3542 } 3543 } 3544 } 3545 return null; 3546 } catch (FileNotFoundException e) { 3547 loge("Carrier Provisioning Urls file not found"); 3548 } catch (XmlPullParserException e) { 3549 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3550 } catch (IOException e) { 3551 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3552 } finally { 3553 if (fileReader != null) { 3554 try { 3555 fileReader.close(); 3556 } catch (IOException e) {} 3557 } 3558 } 3559 return null; 3560 } 3561 3562 @Override 3563 public String getMobileProvisioningUrl() { 3564 enforceConnectivityInternalPermission(); 3565 String url = getProvisioningUrlBaseFromFile(); 3566 if (TextUtils.isEmpty(url)) { 3567 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3568 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3569 } else { 3570 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3571 } 3572 // populate the iccid, imei and phone number in the provisioning url. 3573 if (!TextUtils.isEmpty(url)) { 3574 String phoneNumber = mTelephonyManager.getLine1Number(); 3575 if (TextUtils.isEmpty(phoneNumber)) { 3576 phoneNumber = "0000000000"; 3577 } 3578 url = String.format(url, 3579 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3580 mTelephonyManager.getDeviceId() /* IMEI */, 3581 phoneNumber /* Phone numer */); 3582 } 3583 3584 return url; 3585 } 3586 3587 @Override 3588 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3589 String action) { 3590 enforceConnectivityInternalPermission(); 3591 final long ident = Binder.clearCallingIdentity(); 3592 try { 3593 setProvNotificationVisible(visible, networkType, action); 3594 } finally { 3595 Binder.restoreCallingIdentity(ident); 3596 } 3597 } 3598 3599 @Override 3600 public void setAirplaneMode(boolean enable) { 3601 enforceConnectivityInternalPermission(); 3602 final long ident = Binder.clearCallingIdentity(); 3603 try { 3604 final ContentResolver cr = mContext.getContentResolver(); 3605 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3606 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3607 intent.putExtra("state", enable); 3608 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3609 } finally { 3610 Binder.restoreCallingIdentity(ident); 3611 } 3612 } 3613 3614 private void onUserStart(int userId) { 3615 synchronized(mVpns) { 3616 Vpn userVpn = mVpns.get(userId); 3617 if (userVpn != null) { 3618 loge("Starting user already has a VPN"); 3619 return; 3620 } 3621 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3622 mVpns.put(userId, userVpn); 3623 } 3624 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3625 updateLockdownVpn(); 3626 } else { 3627 updateAlwaysOnVpn(userId); 3628 } 3629 } 3630 3631 private void onUserStop(int userId) { 3632 synchronized(mVpns) { 3633 Vpn userVpn = mVpns.get(userId); 3634 if (userVpn == null) { 3635 loge("Stopping user has no VPN"); 3636 return; 3637 } 3638 mVpns.delete(userId); 3639 } 3640 } 3641 3642 private void onUserAdded(int userId) { 3643 synchronized(mVpns) { 3644 final int vpnsSize = mVpns.size(); 3645 for (int i = 0; i < vpnsSize; i++) { 3646 Vpn vpn = mVpns.valueAt(i); 3647 vpn.onUserAdded(userId); 3648 } 3649 } 3650 } 3651 3652 private void onUserRemoved(int userId) { 3653 synchronized(mVpns) { 3654 final int vpnsSize = mVpns.size(); 3655 for (int i = 0; i < vpnsSize; i++) { 3656 Vpn vpn = mVpns.valueAt(i); 3657 vpn.onUserRemoved(userId); 3658 } 3659 } 3660 } 3661 3662 private void onUserUnlocked(int userId) { 3663 // User present may be sent because of an unlock, which might mean an unlocked keystore. 3664 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3665 updateLockdownVpn(); 3666 } else { 3667 updateAlwaysOnVpn(userId); 3668 } 3669 } 3670 3671 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3672 @Override 3673 public void onReceive(Context context, Intent intent) { 3674 final String action = intent.getAction(); 3675 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3676 if (userId == UserHandle.USER_NULL) return; 3677 3678 if (Intent.ACTION_USER_STARTING.equals(action)) { 3679 onUserStart(userId); 3680 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3681 onUserStop(userId); 3682 } else if (Intent.ACTION_USER_ADDED.equals(action)) { 3683 onUserAdded(userId); 3684 } else if (Intent.ACTION_USER_REMOVED.equals(action)) { 3685 onUserRemoved(userId); 3686 } else if (Intent.ACTION_USER_UNLOCKED.equals(action)) { 3687 onUserUnlocked(userId); 3688 } 3689 } 3690 }; 3691 3692 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3693 new HashMap<Messenger, NetworkFactoryInfo>(); 3694 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3695 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3696 3697 private static class NetworkFactoryInfo { 3698 public final String name; 3699 public final Messenger messenger; 3700 public final AsyncChannel asyncChannel; 3701 3702 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3703 this.name = name; 3704 this.messenger = messenger; 3705 this.asyncChannel = asyncChannel; 3706 } 3707 } 3708 3709 /** 3710 * Tracks info about the requester. 3711 * Also used to notice when the calling process dies so we can self-expire 3712 */ 3713 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3714 static final boolean REQUEST = true; 3715 static final boolean LISTEN = false; 3716 3717 final NetworkRequest request; 3718 final PendingIntent mPendingIntent; 3719 boolean mPendingIntentSent; 3720 private final IBinder mBinder; 3721 final int mPid; 3722 final int mUid; 3723 final Messenger messenger; 3724 final boolean isRequest; 3725 3726 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3727 request = r; 3728 mPendingIntent = pi; 3729 messenger = null; 3730 mBinder = null; 3731 mPid = getCallingPid(); 3732 mUid = getCallingUid(); 3733 this.isRequest = isRequest; 3734 } 3735 3736 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3737 super(); 3738 messenger = m; 3739 request = r; 3740 mBinder = binder; 3741 mPid = getCallingPid(); 3742 mUid = getCallingUid(); 3743 this.isRequest = isRequest; 3744 mPendingIntent = null; 3745 3746 try { 3747 mBinder.linkToDeath(this, 0); 3748 } catch (RemoteException e) { 3749 binderDied(); 3750 } 3751 } 3752 3753 void unlinkDeathRecipient() { 3754 if (mBinder != null) { 3755 mBinder.unlinkToDeath(this, 0); 3756 } 3757 } 3758 3759 public void binderDied() { 3760 log("ConnectivityService NetworkRequestInfo binderDied(" + 3761 request + ", " + mBinder + ")"); 3762 releaseNetworkRequest(request); 3763 } 3764 3765 public String toString() { 3766 return (isRequest ? "Request" : "Listen") + 3767 " from uid/pid:" + mUid + "/" + mPid + 3768 " for " + request + 3769 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3770 } 3771 } 3772 3773 private void ensureRequestableCapabilities(NetworkCapabilities networkCapabilities) { 3774 final String badCapability = networkCapabilities.describeFirstNonRequestableCapability(); 3775 if (badCapability != null) { 3776 throw new IllegalArgumentException("Cannot request network with " + badCapability); 3777 } 3778 } 3779 3780 private ArrayList<Integer> getSignalStrengthThresholds(NetworkAgentInfo nai) { 3781 final SortedSet<Integer> thresholds = new TreeSet(); 3782 synchronized (nai) { 3783 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3784 if (nri.request.networkCapabilities.hasSignalStrength() && 3785 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 3786 thresholds.add(nri.request.networkCapabilities.getSignalStrength()); 3787 } 3788 } 3789 } 3790 return new ArrayList<Integer>(thresholds); 3791 } 3792 3793 private void updateSignalStrengthThresholds( 3794 NetworkAgentInfo nai, String reason, NetworkRequest request) { 3795 ArrayList<Integer> thresholdsArray = getSignalStrengthThresholds(nai); 3796 Bundle thresholds = new Bundle(); 3797 thresholds.putIntegerArrayList("thresholds", thresholdsArray); 3798 3799 // TODO: Switch to VDBG. 3800 if (DBG) { 3801 String detail; 3802 if (request != null && request.networkCapabilities.hasSignalStrength()) { 3803 detail = reason + " " + request.networkCapabilities.getSignalStrength(); 3804 } else { 3805 detail = reason; 3806 } 3807 log(String.format("updateSignalStrengthThresholds: %s, sending %s to %s", 3808 detail, Arrays.toString(thresholdsArray.toArray()), nai.name())); 3809 } 3810 3811 nai.asyncChannel.sendMessage( 3812 android.net.NetworkAgent.CMD_SET_SIGNAL_STRENGTH_THRESHOLDS, 3813 0, 0, thresholds); 3814 } 3815 3816 @Override 3817 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3818 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3819 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3820 enforceNetworkRequestPermissions(networkCapabilities); 3821 enforceMeteredApnPolicy(networkCapabilities); 3822 ensureRequestableCapabilities(networkCapabilities); 3823 3824 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3825 throw new IllegalArgumentException("Bad timeout specified"); 3826 } 3827 3828 if (NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER 3829 .equals(networkCapabilities.getNetworkSpecifier())) { 3830 throw new IllegalArgumentException("Invalid network specifier - must not be '" 3831 + NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER + "'"); 3832 } 3833 3834 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3835 nextNetworkRequestId()); 3836 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3837 NetworkRequestInfo.REQUEST); 3838 if (DBG) log("requestNetwork for " + nri); 3839 3840 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3841 if (timeoutMs > 0) { 3842 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3843 nri), timeoutMs); 3844 } 3845 return networkRequest; 3846 } 3847 3848 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3849 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3850 enforceConnectivityInternalPermission(); 3851 } else { 3852 enforceChangePermission(); 3853 } 3854 } 3855 3856 @Override 3857 public boolean requestBandwidthUpdate(Network network) { 3858 enforceAccessPermission(); 3859 NetworkAgentInfo nai = null; 3860 if (network == null) { 3861 return false; 3862 } 3863 synchronized (mNetworkForNetId) { 3864 nai = mNetworkForNetId.get(network.netId); 3865 } 3866 if (nai != null) { 3867 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3868 return true; 3869 } 3870 return false; 3871 } 3872 3873 3874 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3875 // if UID is restricted, don't allow them to bring up metered APNs 3876 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3877 final int uidRules; 3878 final int uid = Binder.getCallingUid(); 3879 synchronized(mRulesLock) { 3880 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3881 } 3882 if (uidRules != RULE_ALLOW_ALL) { 3883 // we could silently fail or we can filter the available nets to only give 3884 // them those they have access to. Chose the more useful 3885 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3886 } 3887 } 3888 } 3889 3890 @Override 3891 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3892 PendingIntent operation) { 3893 checkNotNull(operation, "PendingIntent cannot be null."); 3894 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3895 enforceNetworkRequestPermissions(networkCapabilities); 3896 enforceMeteredApnPolicy(networkCapabilities); 3897 ensureRequestableCapabilities(networkCapabilities); 3898 3899 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3900 nextNetworkRequestId()); 3901 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3902 NetworkRequestInfo.REQUEST); 3903 if (DBG) log("pendingRequest for " + nri); 3904 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3905 nri)); 3906 return networkRequest; 3907 } 3908 3909 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3910 mHandler.sendMessageDelayed( 3911 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3912 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3913 } 3914 3915 @Override 3916 public void releasePendingNetworkRequest(PendingIntent operation) { 3917 checkNotNull(operation, "PendingIntent cannot be null."); 3918 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3919 getCallingUid(), 0, operation)); 3920 } 3921 3922 // In order to implement the compatibility measure for pre-M apps that call 3923 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3924 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3925 // This ensures it has permission to do so. 3926 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3927 if (nc == null) { 3928 return false; 3929 } 3930 int[] transportTypes = nc.getTransportTypes(); 3931 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3932 return false; 3933 } 3934 try { 3935 mContext.enforceCallingOrSelfPermission( 3936 android.Manifest.permission.ACCESS_WIFI_STATE, 3937 "ConnectivityService"); 3938 } catch (SecurityException e) { 3939 return false; 3940 } 3941 return true; 3942 } 3943 3944 @Override 3945 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3946 Messenger messenger, IBinder binder) { 3947 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3948 enforceAccessPermission(); 3949 } 3950 3951 NetworkRequest networkRequest = new NetworkRequest( 3952 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3953 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3954 NetworkRequestInfo.LISTEN); 3955 if (DBG) log("listenForNetwork for " + nri); 3956 3957 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3958 return networkRequest; 3959 } 3960 3961 @Override 3962 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3963 PendingIntent operation) { 3964 checkNotNull(operation, "PendingIntent cannot be null."); 3965 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3966 enforceAccessPermission(); 3967 } 3968 3969 NetworkRequest networkRequest = new NetworkRequest( 3970 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3971 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3972 NetworkRequestInfo.LISTEN); 3973 if (DBG) log("pendingListenForNetwork for " + nri); 3974 3975 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3976 } 3977 3978 @Override 3979 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3980 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3981 0, networkRequest)); 3982 } 3983 3984 @Override 3985 public void registerNetworkFactory(Messenger messenger, String name) { 3986 enforceConnectivityInternalPermission(); 3987 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3988 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3989 } 3990 3991 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3992 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3993 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3994 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3995 } 3996 3997 @Override 3998 public void unregisterNetworkFactory(Messenger messenger) { 3999 enforceConnectivityInternalPermission(); 4000 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 4001 } 4002 4003 private void handleUnregisterNetworkFactory(Messenger messenger) { 4004 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 4005 if (nfi == null) { 4006 loge("Failed to find Messenger in unregisterNetworkFactory"); 4007 return; 4008 } 4009 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 4010 } 4011 4012 /** 4013 * NetworkAgentInfo supporting a request by requestId. 4014 * These have already been vetted (their Capabilities satisfy the request) 4015 * and the are the highest scored network available. 4016 * the are keyed off the Requests requestId. 4017 */ 4018 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 4019 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 4020 new SparseArray<NetworkAgentInfo>(); 4021 4022 // NOTE: Accessed on multiple threads, must be synchronized on itself. 4023 @GuardedBy("mNetworkForNetId") 4024 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 4025 new SparseArray<NetworkAgentInfo>(); 4026 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 4027 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 4028 // there may not be a strict 1:1 correlation between the two. 4029 @GuardedBy("mNetworkForNetId") 4030 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 4031 4032 // NetworkAgentInfo keyed off its connecting messenger 4033 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 4034 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 4035 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 4036 new HashMap<Messenger, NetworkAgentInfo>(); 4037 4038 @GuardedBy("mBlockedAppUids") 4039 private final HashSet<Integer> mBlockedAppUids = new HashSet(); 4040 4041 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 4042 private final NetworkRequest mDefaultRequest; 4043 4044 // Request used to optionally keep mobile data active even when higher 4045 // priority networks like Wi-Fi are active. 4046 private final NetworkRequest mDefaultMobileDataRequest; 4047 4048 private NetworkAgentInfo getDefaultNetwork() { 4049 return mNetworkForRequestId.get(mDefaultRequest.requestId); 4050 } 4051 4052 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 4053 return nai == getDefaultNetwork(); 4054 } 4055 4056 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 4057 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 4058 int currentScore, NetworkMisc networkMisc) { 4059 enforceConnectivityInternalPermission(); 4060 4061 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 4062 // satisfies mDefaultRequest. 4063 final NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 4064 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 4065 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 4066 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest, this); 4067 synchronized (this) { 4068 nai.networkMonitor.systemReady = mSystemReady; 4069 } 4070 addValidationLogs(nai.networkMonitor.getValidationLogs(), nai.network); 4071 if (DBG) log("registerNetworkAgent " + nai); 4072 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 4073 return nai.network.netId; 4074 } 4075 4076 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 4077 if (VDBG) log("Got NetworkAgent Messenger"); 4078 mNetworkAgentInfos.put(na.messenger, na); 4079 synchronized (mNetworkForNetId) { 4080 mNetworkForNetId.put(na.network.netId, na); 4081 } 4082 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 4083 NetworkInfo networkInfo = na.networkInfo; 4084 na.networkInfo = null; 4085 updateNetworkInfo(na, networkInfo); 4086 } 4087 4088 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 4089 LinkProperties newLp = networkAgent.linkProperties; 4090 int netId = networkAgent.network.netId; 4091 4092 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 4093 // we do anything else, make sure its LinkProperties are accurate. 4094 if (networkAgent.clatd != null) { 4095 networkAgent.clatd.fixupLinkProperties(oldLp); 4096 } 4097 if (networkAgent.apfFilter != null) { 4098 networkAgent.apfFilter.updateFilter(); 4099 } 4100 4101 updateInterfaces(newLp, oldLp, netId); 4102 updateMtu(newLp, oldLp); 4103 // TODO - figure out what to do for clat 4104// for (LinkProperties lp : newLp.getStackedLinks()) { 4105// updateMtu(lp, null); 4106// } 4107 updateTcpBufferSizes(networkAgent); 4108 4109 // TODO: deprecate and remove mDefaultDns when we can do so safely. See http://b/18327075 4110 // In L, we used it only when the network had Internet access but provided no DNS servers. 4111 // For now, just disable it, and if disabling it doesn't break things, remove it. 4112 // final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 4113 // NET_CAPABILITY_INTERNET); 4114 final boolean useDefaultDns = false; 4115 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 4116 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 4117 4118 updateClat(newLp, oldLp, networkAgent); 4119 if (isDefaultNetwork(networkAgent)) { 4120 handleApplyDefaultProxy(newLp.getHttpProxy()); 4121 } else { 4122 updateProxy(newLp, oldLp, networkAgent); 4123 } 4124 // TODO - move this check to cover the whole function 4125 if (!Objects.equals(newLp, oldLp)) { 4126 notifyIfacesChangedForNetworkStats(); 4127 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 4128 } 4129 4130 mKeepaliveTracker.handleCheckKeepalivesStillValid(networkAgent); 4131 } 4132 4133 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 4134 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 4135 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 4136 4137 if (!wasRunningClat && shouldRunClat) { 4138 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 4139 nai.clatd.start(); 4140 } else if (wasRunningClat && !shouldRunClat) { 4141 nai.clatd.stop(); 4142 } 4143 } 4144 4145 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 4146 CompareResult<String> interfaceDiff = new CompareResult<String>(); 4147 if (oldLp != null) { 4148 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 4149 } else if (newLp != null) { 4150 interfaceDiff.added = newLp.getAllInterfaceNames(); 4151 } 4152 for (String iface : interfaceDiff.added) { 4153 try { 4154 if (DBG) log("Adding iface " + iface + " to network " + netId); 4155 mNetd.addInterfaceToNetwork(iface, netId); 4156 } catch (Exception e) { 4157 loge("Exception adding interface: " + e); 4158 } 4159 } 4160 for (String iface : interfaceDiff.removed) { 4161 try { 4162 if (DBG) log("Removing iface " + iface + " from network " + netId); 4163 mNetd.removeInterfaceFromNetwork(iface, netId); 4164 } catch (Exception e) { 4165 loge("Exception removing interface: " + e); 4166 } 4167 } 4168 } 4169 4170 /** 4171 * Have netd update routes from oldLp to newLp. 4172 * @return true if routes changed between oldLp and newLp 4173 */ 4174 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 4175 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 4176 if (oldLp != null) { 4177 routeDiff = oldLp.compareAllRoutes(newLp); 4178 } else if (newLp != null) { 4179 routeDiff.added = newLp.getAllRoutes(); 4180 } 4181 4182 // add routes before removing old in case it helps with continuous connectivity 4183 4184 // do this twice, adding non-nexthop routes first, then routes they are dependent on 4185 for (RouteInfo route : routeDiff.added) { 4186 if (route.hasGateway()) continue; 4187 if (DBG) log("Adding Route [" + route + "] to network " + netId); 4188 try { 4189 mNetd.addRoute(netId, route); 4190 } catch (Exception e) { 4191 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 4192 loge("Exception in addRoute for non-gateway: " + e); 4193 } 4194 } 4195 } 4196 for (RouteInfo route : routeDiff.added) { 4197 if (route.hasGateway() == false) continue; 4198 if (DBG) log("Adding Route [" + route + "] to network " + netId); 4199 try { 4200 mNetd.addRoute(netId, route); 4201 } catch (Exception e) { 4202 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4203 loge("Exception in addRoute for gateway: " + e); 4204 } 4205 } 4206 } 4207 4208 for (RouteInfo route : routeDiff.removed) { 4209 if (DBG) log("Removing Route [" + route + "] from network " + netId); 4210 try { 4211 mNetd.removeRoute(netId, route); 4212 } catch (Exception e) { 4213 loge("Exception in removeRoute: " + e); 4214 } 4215 } 4216 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4217 } 4218 4219 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 4220 boolean flush, boolean useDefaultDns) { 4221 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 4222 Collection<InetAddress> dnses = newLp.getDnsServers(); 4223 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 4224 dnses = new ArrayList(); 4225 dnses.add(mDefaultDns); 4226 if (DBG) { 4227 loge("no dns provided for netId " + netId + ", so using defaults"); 4228 } 4229 } 4230 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 4231 try { 4232 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 4233 newLp.getDomains()); 4234 } catch (Exception e) { 4235 loge("Exception in setDnsServersForNetwork: " + e); 4236 } 4237 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 4238 if (defaultNai != null && defaultNai.network.netId == netId) { 4239 setDefaultDnsSystemProperties(dnses); 4240 } 4241 flushVmDnsCache(); 4242 } else if (flush) { 4243 try { 4244 mNetd.flushNetworkDnsCache(netId); 4245 } catch (Exception e) { 4246 loge("Exception in flushNetworkDnsCache: " + e); 4247 } 4248 flushVmDnsCache(); 4249 } 4250 } 4251 4252 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4253 int last = 0; 4254 for (InetAddress dns : dnses) { 4255 ++last; 4256 String key = "net.dns" + last; 4257 String value = dns.getHostAddress(); 4258 SystemProperties.set(key, value); 4259 } 4260 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4261 String key = "net.dns" + i; 4262 SystemProperties.set(key, ""); 4263 } 4264 mNumDnsEntries = last; 4265 } 4266 4267 /** 4268 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 4269 * augmented with any stateful capabilities implied from {@code networkAgent} 4270 * (e.g., validated status and captive portal status). 4271 * 4272 * @param nai the network having its capabilities updated. 4273 * @param networkCapabilities the new network capabilities. 4274 */ 4275 private void updateCapabilities(NetworkAgentInfo nai, NetworkCapabilities networkCapabilities) { 4276 // Don't modify caller's NetworkCapabilities. 4277 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4278 if (nai.lastValidated) { 4279 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4280 } else { 4281 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4282 } 4283 if (nai.lastCaptivePortalDetected) { 4284 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4285 } else { 4286 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4287 } 4288 if (!Objects.equals(nai.networkCapabilities, networkCapabilities)) { 4289 final int oldScore = nai.getCurrentScore(); 4290 if (nai.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) != 4291 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED)) { 4292 try { 4293 mNetd.setNetworkPermission(nai.network.netId, 4294 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) ? 4295 null : NetworkManagementService.PERMISSION_SYSTEM); 4296 } catch (RemoteException e) { 4297 loge("Exception in setNetworkPermission: " + e); 4298 } 4299 } 4300 synchronized (nai) { 4301 nai.networkCapabilities = networkCapabilities; 4302 } 4303 rematchAllNetworksAndRequests(nai, oldScore); 4304 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 4305 } 4306 } 4307 4308 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4309 for (int i = 0; i < nai.networkRequests.size(); i++) { 4310 NetworkRequest nr = nai.networkRequests.valueAt(i); 4311 // Don't send listening requests to factories. b/17393458 4312 if (!isRequest(nr)) continue; 4313 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4314 } 4315 } 4316 4317 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4318 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4319 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4320 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4321 networkRequest); 4322 } 4323 } 4324 4325 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4326 int notificationType) { 4327 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4328 Intent intent = new Intent(); 4329 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4330 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4331 nri.mPendingIntentSent = true; 4332 sendIntent(nri.mPendingIntent, intent); 4333 } 4334 // else not handled 4335 } 4336 4337 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4338 mPendingIntentWakeLock.acquire(); 4339 try { 4340 if (DBG) log("Sending " + pendingIntent); 4341 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4342 } catch (PendingIntent.CanceledException e) { 4343 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4344 mPendingIntentWakeLock.release(); 4345 releasePendingNetworkRequest(pendingIntent); 4346 } 4347 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4348 } 4349 4350 @Override 4351 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4352 String resultData, Bundle resultExtras) { 4353 if (DBG) log("Finished sending " + pendingIntent); 4354 mPendingIntentWakeLock.release(); 4355 // Release with a delay so the receiving client has an opportunity to put in its 4356 // own request. 4357 releasePendingNetworkRequestWithDelay(pendingIntent); 4358 } 4359 4360 private void callCallbackForRequest(NetworkRequestInfo nri, 4361 NetworkAgentInfo networkAgent, int notificationType) { 4362 if (nri.messenger == null) return; // Default request has no msgr 4363 Bundle bundle = new Bundle(); 4364 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4365 new NetworkRequest(nri.request)); 4366 Message msg = Message.obtain(); 4367 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4368 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4369 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4370 } 4371 switch (notificationType) { 4372 case ConnectivityManager.CALLBACK_LOSING: { 4373 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4374 break; 4375 } 4376 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4377 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4378 new NetworkCapabilities(networkAgent.networkCapabilities)); 4379 break; 4380 } 4381 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4382 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4383 new LinkProperties(networkAgent.linkProperties)); 4384 break; 4385 } 4386 } 4387 msg.what = notificationType; 4388 msg.setData(bundle); 4389 try { 4390 if (VDBG) { 4391 log("sending notification " + notifyTypeToName(notificationType) + 4392 " for " + nri.request); 4393 } 4394 nri.messenger.send(msg); 4395 } catch (RemoteException e) { 4396 // may occur naturally in the race of binder death. 4397 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4398 } 4399 } 4400 4401 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4402 for (int i = 0; i < nai.networkRequests.size(); i++) { 4403 NetworkRequest nr = nai.networkRequests.valueAt(i); 4404 // Ignore listening requests. 4405 if (!isRequest(nr)) continue; 4406 loge("Dead network still had at least " + nr); 4407 break; 4408 } 4409 nai.asyncChannel.disconnect(); 4410 } 4411 4412 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4413 if (oldNetwork == null) { 4414 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4415 return; 4416 } 4417 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4418 teardownUnneededNetwork(oldNetwork); 4419 } 4420 4421 private void makeDefault(NetworkAgentInfo newNetwork) { 4422 if (DBG) log("Switching to new default network: " + newNetwork); 4423 setupDataActivityTracking(newNetwork); 4424 try { 4425 mNetd.setDefaultNetId(newNetwork.network.netId); 4426 } catch (Exception e) { 4427 loge("Exception setting default network :" + e); 4428 } 4429 notifyLockdownVpn(newNetwork); 4430 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4431 updateTcpBufferSizes(newNetwork); 4432 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4433 } 4434 4435 // Handles a network appearing or improving its score. 4436 // 4437 // - Evaluates all current NetworkRequests that can be 4438 // satisfied by newNetwork, and reassigns to newNetwork 4439 // any such requests for which newNetwork is the best. 4440 // 4441 // - Lingers any validated Networks that as a result are no longer 4442 // needed. A network is needed if it is the best network for 4443 // one or more NetworkRequests, or if it is a VPN. 4444 // 4445 // - Tears down newNetwork if it just became validated 4446 // but turns out to be unneeded. 4447 // 4448 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4449 // networks that have no chance (i.e. even if validated) 4450 // of becoming the highest scoring network. 4451 // 4452 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4453 // it does not remove NetworkRequests that other Networks could better satisfy. 4454 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4455 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4456 // as it performs better by a factor of the number of Networks. 4457 // 4458 // @param newNetwork is the network to be matched against NetworkRequests. 4459 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4460 // performed to tear down unvalidated networks that have no chance (i.e. even if 4461 // validated) of becoming the highest scoring network. 4462 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, 4463 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4464 if (!newNetwork.created) return; 4465 boolean keep = newNetwork.isVPN(); 4466 boolean isNewDefault = false; 4467 NetworkAgentInfo oldDefaultNetwork = null; 4468 if (VDBG) log("rematching " + newNetwork.name()); 4469 // Find and migrate to this Network any NetworkRequests for 4470 // which this network is now the best. 4471 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4472 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4473 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4474 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4475 final NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4476 final boolean satisfies = newNetwork.satisfies(nri.request); 4477 if (newNetwork == currentNetwork && satisfies) { 4478 if (VDBG) { 4479 log("Network " + newNetwork.name() + " was already satisfying" + 4480 " request " + nri.request.requestId + ". No change."); 4481 } 4482 keep = true; 4483 continue; 4484 } 4485 4486 // check if it satisfies the NetworkCapabilities 4487 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4488 if (satisfies) { 4489 if (!nri.isRequest) { 4490 // This is not a request, it's a callback listener. 4491 // Add it to newNetwork regardless of score. 4492 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4493 continue; 4494 } 4495 4496 // next check if it's better than any current network we're using for 4497 // this request 4498 if (VDBG) { 4499 log("currentScore = " + 4500 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4501 ", newScore = " + newNetwork.getCurrentScore()); 4502 } 4503 if (currentNetwork == null || 4504 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4505 if (DBG) log("rematch for " + newNetwork.name()); 4506 if (currentNetwork != null) { 4507 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4508 currentNetwork.networkRequests.remove(nri.request.requestId); 4509 currentNetwork.networkLingered.add(nri.request); 4510 affectedNetworks.add(currentNetwork); 4511 } else { 4512 if (DBG) log(" accepting network in place of null"); 4513 } 4514 unlinger(newNetwork); 4515 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4516 if (!newNetwork.addRequest(nri.request)) { 4517 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4518 } 4519 addedRequests.add(nri); 4520 keep = true; 4521 // Tell NetworkFactories about the new score, so they can stop 4522 // trying to connect if they know they cannot match it. 4523 // TODO - this could get expensive if we have alot of requests for this 4524 // network. Think about if there is a way to reduce this. Push 4525 // netid->request mapping to each factory? 4526 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4527 if (mDefaultRequest.requestId == nri.request.requestId) { 4528 isNewDefault = true; 4529 oldDefaultNetwork = currentNetwork; 4530 } 4531 } 4532 } else if (newNetwork.networkRequests.get(nri.request.requestId) != null) { 4533 // If "newNetwork" is listed as satisfying "nri" but no longer satisfies "nri", 4534 // mark it as no longer satisfying "nri". Because networks are processed by 4535 // rematchAllNetworkAndRequests() in descending score order, "currentNetwork" will 4536 // match "newNetwork" before this loop will encounter a "currentNetwork" with higher 4537 // score than "newNetwork" and where "currentNetwork" no longer satisfies "nri". 4538 // This means this code doesn't have to handle the case where "currentNetwork" no 4539 // longer satisfies "nri" when "currentNetwork" does not equal "newNetwork". 4540 if (DBG) { 4541 log("Network " + newNetwork.name() + " stopped satisfying" + 4542 " request " + nri.request.requestId); 4543 } 4544 newNetwork.networkRequests.remove(nri.request.requestId); 4545 if (currentNetwork == newNetwork) { 4546 mNetworkForRequestId.remove(nri.request.requestId); 4547 sendUpdatedScoreToFactories(nri.request, 0); 4548 } else { 4549 if (nri.isRequest == true) { 4550 Slog.wtf(TAG, "BUG: Removing request " + nri.request.requestId + " from " + 4551 newNetwork.name() + 4552 " without updating mNetworkForRequestId or factories!"); 4553 } 4554 } 4555 // TODO: technically, sending CALLBACK_LOST here is 4556 // incorrect if nri is a request (not a listen) and there 4557 // is a replacement network currently connected that can 4558 // satisfy it. However, the only capability that can both 4559 // a) be requested and b) change is NET_CAPABILITY_TRUSTED, 4560 // so this code is only incorrect for a network that loses 4561 // the TRUSTED capability, which is a rare case. 4562 callCallbackForRequest(nri, newNetwork, ConnectivityManager.CALLBACK_LOST); 4563 } 4564 } 4565 // Linger any networks that are no longer needed. 4566 for (NetworkAgentInfo nai : affectedNetworks) { 4567 if (nai.lingering) { 4568 // Already lingered. Nothing to do. This can only happen if "nai" is in 4569 // "affectedNetworks" twice. The reasoning being that to get added to 4570 // "affectedNetworks", "nai" must have been satisfying a NetworkRequest 4571 // (i.e. not lingered) so it could have only been lingered by this loop. 4572 // unneeded(nai) will be false and we'll call unlinger() below which would 4573 // be bad, so handle it here. 4574 } else if (unneeded(nai)) { 4575 linger(nai); 4576 } else { 4577 // Clear nai.networkLingered we might have added above. 4578 unlinger(nai); 4579 } 4580 } 4581 if (isNewDefault) { 4582 // Notify system services that this network is up. 4583 makeDefault(newNetwork); 4584 synchronized (ConnectivityService.this) { 4585 // have a new default network, release the transition wakelock in 4586 // a second if it's held. The second pause is to allow apps 4587 // to reconnect over the new network 4588 if (mNetTransitionWakeLock.isHeld()) { 4589 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4590 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4591 mNetTransitionWakeLockSerialNumber, 0), 4592 1000); 4593 } 4594 } 4595 } 4596 4597 // do this after the default net is switched, but 4598 // before LegacyTypeTracker sends legacy broadcasts 4599 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4600 4601 if (isNewDefault) { 4602 // Maintain the illusion: since the legacy API only 4603 // understands one network at a time, we must pretend 4604 // that the current default network disconnected before 4605 // the new one connected. 4606 if (oldDefaultNetwork != null) { 4607 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4608 oldDefaultNetwork, true); 4609 } 4610 mDefaultInetConditionPublished = newNetwork.lastValidated ? 100 : 0; 4611 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4612 notifyLockdownVpn(newNetwork); 4613 } 4614 4615 if (keep) { 4616 // Notify battery stats service about this network, both the normal 4617 // interface and any stacked links. 4618 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4619 try { 4620 final IBatteryStats bs = BatteryStatsService.getService(); 4621 final int type = newNetwork.networkInfo.getType(); 4622 4623 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4624 bs.noteNetworkInterfaceType(baseIface, type); 4625 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4626 final String stackedIface = stacked.getInterfaceName(); 4627 bs.noteNetworkInterfaceType(stackedIface, type); 4628 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4629 } 4630 } catch (RemoteException ignored) { 4631 } 4632 4633 // This has to happen after the notifyNetworkCallbacks as that tickles each 4634 // ConnectivityManager instance so that legacy requests correctly bind dns 4635 // requests to this network. The legacy users are listening for this bcast 4636 // and will generally do a dns request so they can ensureRouteToHost and if 4637 // they do that before the callbacks happen they'll use the default network. 4638 // 4639 // TODO: Is there still a race here? We send the broadcast 4640 // after sending the callback, but if the app can receive the 4641 // broadcast before the callback, it might still break. 4642 // 4643 // This *does* introduce a race where if the user uses the new api 4644 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4645 // they may get old info. Reverse this after the old startUsing api is removed. 4646 // This is on top of the multiple intent sequencing referenced in the todo above. 4647 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4648 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4649 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4650 // legacy type tracker filters out repeat adds 4651 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4652 } 4653 } 4654 4655 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4656 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4657 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4658 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4659 if (newNetwork.isVPN()) { 4660 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4661 } 4662 } 4663 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4664 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4665 if (unneeded(nai)) { 4666 if (DBG) log("Reaping " + nai.name()); 4667 teardownUnneededNetwork(nai); 4668 } 4669 } 4670 } 4671 } 4672 4673 /** 4674 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4675 * being disconnected. 4676 * @param changed If only one Network's score or capabilities have been modified since the last 4677 * time this function was called, pass this Network in this argument, otherwise pass 4678 * null. 4679 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4680 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4681 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4682 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4683 * network's score. 4684 */ 4685 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4686 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4687 // to avoid the slowness. It is not simply enough to process just "changed", for 4688 // example in the case where "changed"'s score decreases and another network should begin 4689 // satifying a NetworkRequest that "changed" currently satisfies. 4690 4691 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4692 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4693 // rematchNetworkAndRequests() handles. 4694 if (changed != null && oldScore < changed.getCurrentScore()) { 4695 rematchNetworkAndRequests(changed, ReapUnvalidatedNetworks.REAP); 4696 } else { 4697 final NetworkAgentInfo[] nais = mNetworkAgentInfos.values().toArray( 4698 new NetworkAgentInfo[mNetworkAgentInfos.size()]); 4699 // Rematch higher scoring networks first to prevent requests first matching a lower 4700 // scoring network and then a higher scoring network, which could produce multiple 4701 // callbacks and inadvertently unlinger networks. 4702 Arrays.sort(nais); 4703 for (NetworkAgentInfo nai : nais) { 4704 rematchNetworkAndRequests(nai, 4705 // Only reap the last time through the loop. Reaping before all rematching 4706 // is complete could incorrectly teardown a network that hasn't yet been 4707 // rematched. 4708 (nai != nais[nais.length-1]) ? ReapUnvalidatedNetworks.DONT_REAP 4709 : ReapUnvalidatedNetworks.REAP); 4710 } 4711 } 4712 } 4713 4714 private void updateInetCondition(NetworkAgentInfo nai) { 4715 // Don't bother updating until we've graduated to validated at least once. 4716 if (!nai.everValidated) return; 4717 // For now only update icons for default connection. 4718 // TODO: Update WiFi and cellular icons separately. b/17237507 4719 if (!isDefaultNetwork(nai)) return; 4720 4721 int newInetCondition = nai.lastValidated ? 100 : 0; 4722 // Don't repeat publish. 4723 if (newInetCondition == mDefaultInetConditionPublished) return; 4724 4725 mDefaultInetConditionPublished = newInetCondition; 4726 sendInetConditionBroadcast(nai.networkInfo); 4727 } 4728 4729 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4730 if (mLockdownTracker != null) { 4731 if (nai != null && nai.isVPN()) { 4732 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4733 } else { 4734 mLockdownTracker.onNetworkInfoChanged(); 4735 } 4736 } 4737 } 4738 4739 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4740 NetworkInfo.State state = newInfo.getState(); 4741 NetworkInfo oldInfo = null; 4742 final int oldScore = networkAgent.getCurrentScore(); 4743 synchronized (networkAgent) { 4744 oldInfo = networkAgent.networkInfo; 4745 networkAgent.networkInfo = newInfo; 4746 } 4747 notifyLockdownVpn(networkAgent); 4748 4749 if (oldInfo != null && oldInfo.getState() == state) { 4750 if (oldInfo.isRoaming() != newInfo.isRoaming()) { 4751 if (VDBG) log("roaming status changed, notifying NetworkStatsService"); 4752 notifyIfacesChangedForNetworkStats(); 4753 } else if (VDBG) log("ignoring duplicate network state non-change"); 4754 // In either case, no further work should be needed. 4755 return; 4756 } 4757 if (DBG) { 4758 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4759 (oldInfo == null ? "null" : oldInfo.getState()) + 4760 " to " + state); 4761 } 4762 4763 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4764 try { 4765 // This should never fail. Specifying an already in use NetID will cause failure. 4766 if (networkAgent.isVPN()) { 4767 mNetd.createVirtualNetwork(networkAgent.network.netId, 4768 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4769 (networkAgent.networkMisc == null || 4770 !networkAgent.networkMisc.allowBypass)); 4771 } else { 4772 mNetd.createPhysicalNetwork(networkAgent.network.netId, 4773 networkAgent.networkCapabilities.hasCapability( 4774 NET_CAPABILITY_NOT_RESTRICTED) ? 4775 null : NetworkManagementService.PERMISSION_SYSTEM); 4776 } 4777 } catch (Exception e) { 4778 loge("Error creating network " + networkAgent.network.netId + ": " 4779 + e.getMessage()); 4780 return; 4781 } 4782 networkAgent.created = true; 4783 updateLinkProperties(networkAgent, null); 4784 notifyIfacesChangedForNetworkStats(); 4785 4786 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4787 scheduleUnvalidatedPrompt(networkAgent); 4788 4789 if (networkAgent.isVPN()) { 4790 // Temporarily disable the default proxy (not global). 4791 synchronized (mProxyLock) { 4792 if (!mDefaultProxyDisabled) { 4793 mDefaultProxyDisabled = true; 4794 if (mGlobalProxy == null && mDefaultProxy != null) { 4795 sendProxyBroadcast(null); 4796 } 4797 } 4798 } 4799 // TODO: support proxy per network. 4800 } 4801 4802 // Whether a particular NetworkRequest listen should cause signal strength thresholds to 4803 // be communicated to a particular NetworkAgent depends only on the network's immutable, 4804 // capabilities, so it only needs to be done once on initial connect, not every time the 4805 // network's capabilities change. Note that we do this before rematching the network, 4806 // so we could decide to tear it down immediately afterwards. That's fine though - on 4807 // disconnection NetworkAgents should stop any signal strength monitoring they have been 4808 // doing. 4809 updateSignalStrengthThresholds(networkAgent, "CONNECT", null); 4810 4811 // Consider network even though it is not yet validated. 4812 rematchNetworkAndRequests(networkAgent, ReapUnvalidatedNetworks.REAP); 4813 4814 // This has to happen after matching the requests, because callbacks are just requests. 4815 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4816 } else if (state == NetworkInfo.State.DISCONNECTED) { 4817 networkAgent.asyncChannel.disconnect(); 4818 if (networkAgent.isVPN()) { 4819 synchronized (mProxyLock) { 4820 if (mDefaultProxyDisabled) { 4821 mDefaultProxyDisabled = false; 4822 if (mGlobalProxy == null && mDefaultProxy != null) { 4823 sendProxyBroadcast(mDefaultProxy); 4824 } 4825 } 4826 } 4827 } 4828 } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) || 4829 state == NetworkInfo.State.SUSPENDED) { 4830 // going into or coming out of SUSPEND: rescore and notify 4831 if (networkAgent.getCurrentScore() != oldScore) { 4832 rematchAllNetworksAndRequests(networkAgent, oldScore); 4833 } 4834 notifyNetworkCallbacks(networkAgent, (state == NetworkInfo.State.SUSPENDED ? 4835 ConnectivityManager.CALLBACK_SUSPENDED : 4836 ConnectivityManager.CALLBACK_RESUMED)); 4837 mLegacyTypeTracker.update(networkAgent); 4838 } 4839 } 4840 4841 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4842 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4843 if (score < 0) { 4844 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4845 "). Bumping score to min of 0"); 4846 score = 0; 4847 } 4848 4849 final int oldScore = nai.getCurrentScore(); 4850 nai.setCurrentScore(score); 4851 4852 rematchAllNetworksAndRequests(nai, oldScore); 4853 4854 sendUpdatedScoreToFactories(nai); 4855 } 4856 4857 // notify only this one new request of the current state 4858 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4859 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4860 // TODO - read state from monitor to decide what to send. 4861// if (nai.networkMonitor.isLingering()) { 4862// notifyType = NetworkCallbacks.LOSING; 4863// } else if (nai.networkMonitor.isEvaluating()) { 4864// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4865// } 4866 if (nri.mPendingIntent == null) { 4867 callCallbackForRequest(nri, nai, notifyType); 4868 } else { 4869 sendPendingIntentForRequest(nri, nai, notifyType); 4870 } 4871 } 4872 4873 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, DetailedState state, int type) { 4874 // The NetworkInfo we actually send out has no bearing on the real 4875 // state of affairs. For example, if the default connection is mobile, 4876 // and a request for HIPRI has just gone away, we need to pretend that 4877 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4878 // the state to DISCONNECTED, even though the network is of type MOBILE 4879 // and is still connected. 4880 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4881 info.setType(type); 4882 if (state != DetailedState.DISCONNECTED) { 4883 info.setDetailedState(state, null, info.getExtraInfo()); 4884 sendConnectedBroadcast(info); 4885 } else { 4886 info.setDetailedState(state, info.getReason(), info.getExtraInfo()); 4887 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4888 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4889 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4890 if (info.isFailover()) { 4891 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4892 nai.networkInfo.setFailover(false); 4893 } 4894 if (info.getReason() != null) { 4895 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4896 } 4897 if (info.getExtraInfo() != null) { 4898 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4899 } 4900 NetworkAgentInfo newDefaultAgent = null; 4901 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4902 newDefaultAgent = getDefaultNetwork(); 4903 if (newDefaultAgent != null) { 4904 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4905 newDefaultAgent.networkInfo); 4906 } else { 4907 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4908 } 4909 } 4910 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4911 mDefaultInetConditionPublished); 4912 sendStickyBroadcast(intent); 4913 if (newDefaultAgent != null) { 4914 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4915 } 4916 } 4917 } 4918 4919 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4920 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4921 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4922 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4923 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4924 if (VDBG) log(" sending notification for " + nr); 4925 if (nri.mPendingIntent == null) { 4926 callCallbackForRequest(nri, networkAgent, notifyType); 4927 } else { 4928 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4929 } 4930 } 4931 } 4932 4933 private String notifyTypeToName(int notifyType) { 4934 switch (notifyType) { 4935 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4936 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4937 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4938 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4939 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4940 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4941 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4942 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4943 } 4944 return "UNKNOWN"; 4945 } 4946 4947 /** 4948 * Notify NetworkStatsService that the set of active ifaces has changed, or that one of the 4949 * properties tracked by NetworkStatsService on an active iface has changed. 4950 */ 4951 private void notifyIfacesChangedForNetworkStats() { 4952 try { 4953 mStatsService.forceUpdateIfaces(); 4954 } catch (Exception ignored) { 4955 } 4956 } 4957 4958 @Override 4959 public boolean addVpnAddress(String address, int prefixLength) { 4960 throwIfLockdownEnabled(); 4961 int user = UserHandle.getUserId(Binder.getCallingUid()); 4962 synchronized (mVpns) { 4963 return mVpns.get(user).addAddress(address, prefixLength); 4964 } 4965 } 4966 4967 @Override 4968 public boolean removeVpnAddress(String address, int prefixLength) { 4969 throwIfLockdownEnabled(); 4970 int user = UserHandle.getUserId(Binder.getCallingUid()); 4971 synchronized (mVpns) { 4972 return mVpns.get(user).removeAddress(address, prefixLength); 4973 } 4974 } 4975 4976 @Override 4977 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4978 throwIfLockdownEnabled(); 4979 int user = UserHandle.getUserId(Binder.getCallingUid()); 4980 boolean success; 4981 synchronized (mVpns) { 4982 success = mVpns.get(user).setUnderlyingNetworks(networks); 4983 } 4984 if (success) { 4985 notifyIfacesChangedForNetworkStats(); 4986 } 4987 return success; 4988 } 4989 4990 @Override 4991 public String getCaptivePortalServerUrl() { 4992 return NetworkMonitor.getCaptivePortalServerUrl(mContext); 4993 } 4994 4995 @Override 4996 public void startNattKeepalive(Network network, int intervalSeconds, Messenger messenger, 4997 IBinder binder, String srcAddr, int srcPort, String dstAddr) { 4998 enforceKeepalivePermission(); 4999 mKeepaliveTracker.startNattKeepalive( 5000 getNetworkAgentInfoForNetwork(network), 5001 intervalSeconds, messenger, binder, 5002 srcAddr, srcPort, dstAddr, ConnectivityManager.PacketKeepalive.NATT_PORT); 5003 } 5004 5005 @Override 5006 public void stopKeepalive(Network network, int slot) { 5007 mHandler.sendMessage(mHandler.obtainMessage( 5008 NetworkAgent.CMD_STOP_PACKET_KEEPALIVE, slot, PacketKeepalive.SUCCESS, network)); 5009 } 5010 5011 @Override 5012 public void factoryReset() { 5013 enforceConnectivityInternalPermission(); 5014 5015 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 5016 return; 5017 } 5018 5019 final int userId = UserHandle.getCallingUserId(); 5020 5021 // Turn airplane mode off 5022 setAirplaneMode(false); 5023 5024 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 5025 // Untether 5026 for (String tether : getTetheredIfaces()) { 5027 untether(tether); 5028 } 5029 } 5030 5031 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 5032 // Turn VPN off 5033 VpnConfig vpnConfig = getVpnConfig(userId); 5034 if (vpnConfig != null) { 5035 if (vpnConfig.legacy) { 5036 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 5037 } else { 5038 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 5039 // in the future without user intervention. 5040 setVpnPackageAuthorization(vpnConfig.user, userId, false); 5041 5042 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 5043 } 5044 } 5045 } 5046 } 5047 5048 @VisibleForTesting 5049 public NetworkMonitor createNetworkMonitor(Context context, Handler handler, 5050 NetworkAgentInfo nai, NetworkRequest defaultRequest) { 5051 return new NetworkMonitor(context, handler, nai, defaultRequest); 5052 } 5053 5054} 5055