ConnectivityService.java revision 2324373124f0ba4e59ba6d3de9e274f2fa28cff0
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.net.metrics.ConnectivityServiceChangeEvent; 75import android.os.Binder; 76import android.os.Build; 77import android.os.Bundle; 78import android.os.FileUtils; 79import android.os.Handler; 80import android.os.HandlerThread; 81import android.os.IBinder; 82import android.os.INetworkManagementService; 83import android.os.Looper; 84import android.os.Message; 85import android.os.Messenger; 86import android.os.ParcelFileDescriptor; 87import android.os.PowerManager; 88import android.os.Process; 89import android.os.RemoteException; 90import android.os.ResultReceiver; 91import android.os.SystemProperties; 92import android.os.UserHandle; 93import android.os.UserManager; 94import android.provider.Settings; 95import android.security.Credentials; 96import android.security.KeyStore; 97import android.telephony.TelephonyManager; 98import android.text.TextUtils; 99import android.util.LocalLog; 100import android.util.LocalLog.ReadOnlyLocalLog; 101import android.util.Pair; 102import android.util.Slog; 103import android.util.SparseArray; 104import android.util.SparseBooleanArray; 105import android.util.SparseIntArray; 106import android.util.Xml; 107 108import com.android.internal.R; 109import com.android.internal.annotations.GuardedBy; 110import com.android.internal.annotations.VisibleForTesting; 111import com.android.internal.app.IBatteryStats; 112import com.android.internal.net.LegacyVpnInfo; 113import com.android.internal.net.NetworkStatsFactory; 114import com.android.internal.net.VpnConfig; 115import com.android.internal.net.VpnInfo; 116import com.android.internal.net.VpnProfile; 117import com.android.internal.util.AsyncChannel; 118import com.android.internal.util.IndentingPrintWriter; 119import com.android.internal.util.MessageUtils; 120import com.android.internal.util.XmlUtils; 121import com.android.server.am.BatteryStatsService; 122import com.android.server.connectivity.DataConnectionStats; 123import com.android.server.connectivity.KeepaliveTracker; 124import com.android.server.connectivity.NetworkDiagnostics; 125import com.android.server.connectivity.Nat464Xlat; 126import com.android.server.connectivity.NetworkAgentInfo; 127import com.android.server.connectivity.NetworkMonitor; 128import com.android.server.connectivity.PacManager; 129import com.android.server.connectivity.PermissionMonitor; 130import com.android.server.connectivity.Tethering; 131import com.android.server.connectivity.Vpn; 132import com.android.server.net.BaseNetworkObserver; 133import com.android.server.net.LockdownVpnTracker; 134import com.google.android.collect.Lists; 135import com.google.android.collect.Sets; 136 137import org.xmlpull.v1.XmlPullParser; 138import org.xmlpull.v1.XmlPullParserException; 139 140import java.io.File; 141import java.io.FileDescriptor; 142import java.io.FileNotFoundException; 143import java.io.FileReader; 144import java.io.IOException; 145import java.io.PrintWriter; 146import java.net.Inet4Address; 147import java.net.InetAddress; 148import java.net.UnknownHostException; 149import java.util.ArrayDeque; 150import java.util.ArrayList; 151import java.util.Arrays; 152import java.util.Collection; 153import java.util.HashMap; 154import java.util.HashSet; 155import java.util.SortedSet; 156import java.util.TreeSet; 157import java.util.List; 158import java.util.Map; 159import java.util.Objects; 160 161/** 162 * @hide 163 */ 164public class ConnectivityService extends IConnectivityManager.Stub 165 implements PendingIntent.OnFinished { 166 private static final String TAG = "ConnectivityService"; 167 168 private static final boolean DBG = true; 169 private static final boolean VDBG = false; 170 171 private static final boolean LOGD_RULES = false; 172 private static final boolean LOGD_BLOCKED_NETWORKINFO = true; 173 174 // TODO: create better separation between radio types and network types 175 176 // how long to wait before switching back to a radio's default network 177 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 178 // system property that can override the above value 179 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 180 "android.telephony.apn-restore"; 181 182 // How long to wait before putting up a "This network doesn't have an Internet connection, 183 // connect anyway?" dialog after the user selects a network that doesn't validate. 184 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 185 186 // How long to delay to removal of a pending intent based request. 187 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 188 private final int mReleasePendingIntentDelayMs; 189 190 private Tethering mTethering; 191 192 private final PermissionMonitor mPermissionMonitor; 193 194 private KeyStore mKeyStore; 195 196 @GuardedBy("mVpns") 197 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 198 199 private boolean mLockdownEnabled; 200 private LockdownVpnTracker mLockdownTracker; 201 202 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 203 private Object mRulesLock = new Object(); 204 /** Currently active network rules by UID. */ 205 private SparseIntArray mUidRules = new SparseIntArray(); 206 /** Set of ifaces that are costly. */ 207 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 208 209 final private Context mContext; 210 private int mNetworkPreference; 211 // 0 is full bad, 100 is full good 212 private int mDefaultInetConditionPublished = 0; 213 214 private int mNumDnsEntries; 215 216 private boolean mTestMode; 217 private static ConnectivityService sServiceInstance; 218 219 private INetworkManagementService mNetd; 220 private INetworkStatsService mStatsService; 221 private INetworkPolicyManager mPolicyManager; 222 223 private String mCurrentTcpBufferSizes; 224 225 private static final int ENABLED = 1; 226 private static final int DISABLED = 0; 227 228 private static final SparseArray<String> sMagicDecoderRing = MessageUtils.findMessageNames( 229 new Class[] { AsyncChannel.class, ConnectivityService.class, NetworkAgent.class }); 230 231 private enum ReapUnvalidatedNetworks { 232 // Tear down networks that have no chance (e.g. even if validated) of becoming 233 // the highest scoring network satisfying a NetworkRequest. This should be passed when 234 // all networks have been rematched against all NetworkRequests. 235 REAP, 236 // Don't reap networks. This should be passed when some networks have not yet been 237 // rematched against all NetworkRequests. 238 DONT_REAP 239 }; 240 241 /** 242 * used internally to change our mobile data enabled flag 243 */ 244 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 245 246 /** 247 * used internally to clear a wakelock when transitioning 248 * from one net to another. Clear happens when we get a new 249 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 250 * after a timeout if no network is found (typically 1 min). 251 */ 252 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 253 254 /** 255 * used internally to reload global proxy settings 256 */ 257 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 258 259 /** 260 * PAC manager has received new port. 261 */ 262 private static final int EVENT_PROXY_HAS_CHANGED = 16; 263 264 /** 265 * used internally when registering NetworkFactories 266 * obj = NetworkFactoryInfo 267 */ 268 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 269 270 /** 271 * used internally when registering NetworkAgents 272 * obj = Messenger 273 */ 274 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 275 276 /** 277 * used to add a network request 278 * includes a NetworkRequestInfo 279 */ 280 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 281 282 /** 283 * indicates a timeout period is over - check if we had a network yet or not 284 * and if not, call the timeout calback (but leave the request live until they 285 * cancel it. 286 * includes a NetworkRequestInfo 287 */ 288 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 289 290 /** 291 * used to add a network listener - no request 292 * includes a NetworkRequestInfo 293 */ 294 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 295 296 /** 297 * used to remove a network request, either a listener or a real request 298 * arg1 = UID of caller 299 * obj = NetworkRequest 300 */ 301 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 302 303 /** 304 * used internally when registering NetworkFactories 305 * obj = Messenger 306 */ 307 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 308 309 /** 310 * used internally to expire a wakelock when transitioning 311 * from one net to another. Expire happens when we fail to find 312 * a new network (typically after 1 minute) - 313 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 314 * a replacement network. 315 */ 316 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 317 318 /** 319 * Used internally to indicate the system is ready. 320 */ 321 private static final int EVENT_SYSTEM_READY = 25; 322 323 /** 324 * used to add a network request with a pending intent 325 * obj = NetworkRequestInfo 326 */ 327 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 328 329 /** 330 * used to remove a pending intent and its associated network request. 331 * arg1 = UID of caller 332 * obj = PendingIntent 333 */ 334 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 335 336 /** 337 * used to specify whether a network should be used even if unvalidated. 338 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 339 * arg2 = whether to remember this choice in the future (1 or 0) 340 * obj = network 341 */ 342 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 343 344 /** 345 * used to ask the user to confirm a connection to an unvalidated network. 346 * obj = network 347 */ 348 private static final int EVENT_PROMPT_UNVALIDATED = 29; 349 350 /** 351 * used internally to (re)configure mobile data always-on settings. 352 */ 353 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 354 355 /** 356 * used to add a network listener with a pending intent 357 * obj = NetworkRequestInfo 358 */ 359 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 360 361 /** Handler thread used for both of the handlers below. */ 362 @VisibleForTesting 363 protected final HandlerThread mHandlerThread; 364 /** Handler used for internal events. */ 365 final private InternalHandler mHandler; 366 /** Handler used for incoming {@link NetworkStateTracker} events. */ 367 final private NetworkStateTrackerHandler mTrackerHandler; 368 369 private boolean mSystemReady; 370 private Intent mInitialBroadcast; 371 372 private PowerManager.WakeLock mNetTransitionWakeLock; 373 private String mNetTransitionWakeLockCausedBy = ""; 374 private int mNetTransitionWakeLockSerialNumber; 375 private int mNetTransitionWakeLockTimeout; 376 private final PowerManager.WakeLock mPendingIntentWakeLock; 377 378 // used in DBG mode to track inet condition reports 379 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 380 private ArrayList mInetLog; 381 382 // track the current default http proxy - tell the world if we get a new one (real change) 383 private volatile ProxyInfo mDefaultProxy = null; 384 private Object mProxyLock = new Object(); 385 private boolean mDefaultProxyDisabled = false; 386 387 // track the global proxy. 388 private ProxyInfo mGlobalProxy = null; 389 390 private PacManager mPacManager = null; 391 392 final private SettingsObserver mSettingsObserver; 393 394 private UserManager mUserManager; 395 396 NetworkConfig[] mNetConfigs; 397 int mNetworksDefined; 398 399 // the set of network types that can only be enabled by system/sig apps 400 List mProtectedNetworks; 401 402 private DataConnectionStats mDataConnectionStats; 403 404 TelephonyManager mTelephonyManager; 405 406 private KeepaliveTracker mKeepaliveTracker; 407 408 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 409 private final static int MIN_NET_ID = 100; // some reserved marks 410 private final static int MAX_NET_ID = 65535; 411 private int mNextNetId = MIN_NET_ID; 412 413 // sequence number of NetworkRequests 414 private int mNextNetworkRequestId = 1; 415 416 // NetworkRequest activity String log entries. 417 private static final int MAX_NETWORK_REQUEST_LOGS = 20; 418 private final LocalLog mNetworkRequestInfoLogs = new LocalLog(MAX_NETWORK_REQUEST_LOGS); 419 420 // Array of <Network,ReadOnlyLocalLogs> tracking network validation and results 421 private static final int MAX_VALIDATION_LOGS = 10; 422 private final ArrayDeque<Pair<Network,ReadOnlyLocalLog>> mValidationLogs = 423 new ArrayDeque<Pair<Network,ReadOnlyLocalLog>>(MAX_VALIDATION_LOGS); 424 425 private void addValidationLogs(ReadOnlyLocalLog log, Network network) { 426 synchronized(mValidationLogs) { 427 while (mValidationLogs.size() >= MAX_VALIDATION_LOGS) { 428 mValidationLogs.removeLast(); 429 } 430 mValidationLogs.addFirst(new Pair(network, log)); 431 } 432 } 433 434 /** 435 * Implements support for the legacy "one network per network type" model. 436 * 437 * We used to have a static array of NetworkStateTrackers, one for each 438 * network type, but that doesn't work any more now that we can have, 439 * for example, more that one wifi network. This class stores all the 440 * NetworkAgentInfo objects that support a given type, but the legacy 441 * API will only see the first one. 442 * 443 * It serves two main purposes: 444 * 445 * 1. Provide information about "the network for a given type" (since this 446 * API only supports one). 447 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 448 * the first network for a given type changes, or if the default network 449 * changes. 450 */ 451 private class LegacyTypeTracker { 452 453 private static final boolean DBG = true; 454 private static final boolean VDBG = false; 455 456 /** 457 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 458 * Each list holds references to all NetworkAgentInfos that are used to 459 * satisfy requests for that network type. 460 * 461 * This array is built out at startup such that an unsupported network 462 * doesn't get an ArrayList instance, making this a tristate: 463 * unsupported, supported but not active and active. 464 * 465 * The actual lists are populated when we scan the network types that 466 * are supported on this device. 467 */ 468 private ArrayList<NetworkAgentInfo> mTypeLists[]; 469 470 public LegacyTypeTracker() { 471 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 472 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 473 } 474 475 public void addSupportedType(int type) { 476 if (mTypeLists[type] != null) { 477 throw new IllegalStateException( 478 "legacy list for type " + type + "already initialized"); 479 } 480 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 481 } 482 483 public boolean isTypeSupported(int type) { 484 return isNetworkTypeValid(type) && mTypeLists[type] != null; 485 } 486 487 public NetworkAgentInfo getNetworkForType(int type) { 488 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 489 return mTypeLists[type].get(0); 490 } else { 491 return null; 492 } 493 } 494 495 private void maybeLogBroadcast(NetworkAgentInfo nai, DetailedState state, int type, 496 boolean isDefaultNetwork) { 497 if (DBG) { 498 log("Sending " + state + 499 " broadcast for type " + type + " " + nai.name() + 500 " isDefaultNetwork=" + isDefaultNetwork); 501 } 502 } 503 504 /** Adds the given network to the specified legacy type list. */ 505 public void add(int type, NetworkAgentInfo nai) { 506 if (!isTypeSupported(type)) { 507 return; // Invalid network type. 508 } 509 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 510 511 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 512 if (list.contains(nai)) { 513 return; 514 } 515 516 list.add(nai); 517 518 // Send a broadcast if this is the first network of its type or if it's the default. 519 final boolean isDefaultNetwork = isDefaultNetwork(nai); 520 if (list.size() == 1 || isDefaultNetwork) { 521 maybeLogBroadcast(nai, DetailedState.CONNECTED, type, isDefaultNetwork); 522 sendLegacyNetworkBroadcast(nai, DetailedState.CONNECTED, type); 523 } 524 } 525 526 /** Removes the given network from the specified legacy type list. */ 527 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 528 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 529 if (list == null || list.isEmpty()) { 530 return; 531 } 532 533 final boolean wasFirstNetwork = list.get(0).equals(nai); 534 535 if (!list.remove(nai)) { 536 return; 537 } 538 539 final DetailedState state = DetailedState.DISCONNECTED; 540 541 if (wasFirstNetwork || wasDefault) { 542 maybeLogBroadcast(nai, state, type, wasDefault); 543 sendLegacyNetworkBroadcast(nai, state, type); 544 } 545 546 if (!list.isEmpty() && wasFirstNetwork) { 547 if (DBG) log("Other network available for type " + type + 548 ", sending connected broadcast"); 549 final NetworkAgentInfo replacement = list.get(0); 550 maybeLogBroadcast(replacement, state, type, isDefaultNetwork(replacement)); 551 sendLegacyNetworkBroadcast(replacement, state, type); 552 } 553 } 554 555 /** Removes the given network from all legacy type lists. */ 556 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 557 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 558 for (int type = 0; type < mTypeLists.length; type++) { 559 remove(type, nai, wasDefault); 560 } 561 } 562 563 // send out another legacy broadcast - currently only used for suspend/unsuspend 564 // toggle 565 public void update(NetworkAgentInfo nai) { 566 final boolean isDefault = isDefaultNetwork(nai); 567 final DetailedState state = nai.networkInfo.getDetailedState(); 568 for (int type = 0; type < mTypeLists.length; type++) { 569 final ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 570 final boolean contains = (list != null && list.contains(nai)); 571 final boolean isFirst = (list != null && list.size() > 0 && nai == list.get(0)); 572 if (isFirst || (contains && isDefault)) { 573 maybeLogBroadcast(nai, state, type, isDefault); 574 sendLegacyNetworkBroadcast(nai, state, type); 575 } 576 } 577 } 578 579 private String naiToString(NetworkAgentInfo nai) { 580 String name = (nai != null) ? nai.name() : "null"; 581 String state = (nai.networkInfo != null) ? 582 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 583 "???/???"; 584 return name + " " + state; 585 } 586 587 public void dump(IndentingPrintWriter pw) { 588 pw.println("mLegacyTypeTracker:"); 589 pw.increaseIndent(); 590 pw.print("Supported types:"); 591 for (int type = 0; type < mTypeLists.length; type++) { 592 if (mTypeLists[type] != null) pw.print(" " + type); 593 } 594 pw.println(); 595 pw.println("Current state:"); 596 pw.increaseIndent(); 597 for (int type = 0; type < mTypeLists.length; type++) { 598 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 599 for (NetworkAgentInfo nai : mTypeLists[type]) { 600 pw.println(type + " " + naiToString(nai)); 601 } 602 } 603 pw.decreaseIndent(); 604 pw.decreaseIndent(); 605 pw.println(); 606 } 607 } 608 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 609 610 @VisibleForTesting 611 protected HandlerThread createHandlerThread() { 612 return new HandlerThread("ConnectivityServiceThread"); 613 } 614 615 public ConnectivityService(Context context, INetworkManagementService netManager, 616 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 617 if (DBG) log("ConnectivityService starting up"); 618 619 mDefaultRequest = createInternetRequestForTransport(-1); 620 NetworkRequestInfo defaultNRI = new NetworkRequestInfo(null, mDefaultRequest, 621 new Binder(), NetworkRequestType.REQUEST); 622 mNetworkRequests.put(mDefaultRequest, defaultNRI); 623 mNetworkRequestInfoLogs.log("REGISTER " + defaultNRI); 624 625 mDefaultMobileDataRequest = createInternetRequestForTransport( 626 NetworkCapabilities.TRANSPORT_CELLULAR); 627 628 mHandlerThread = createHandlerThread(); 629 mHandlerThread.start(); 630 mHandler = new InternalHandler(mHandlerThread.getLooper()); 631 mTrackerHandler = new NetworkStateTrackerHandler(mHandlerThread.getLooper()); 632 633 // setup our unique device name 634 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 635 String id = Settings.Secure.getString(context.getContentResolver(), 636 Settings.Secure.ANDROID_ID); 637 if (id != null && id.length() > 0) { 638 String name = new String("android-").concat(id); 639 SystemProperties.set("net.hostname", name); 640 } 641 } 642 643 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 644 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 645 646 mContext = checkNotNull(context, "missing Context"); 647 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 648 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 649 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 650 mKeyStore = KeyStore.getInstance(); 651 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 652 653 try { 654 mPolicyManager.registerListener(mPolicyListener); 655 } catch (RemoteException e) { 656 // ouch, no rules updates means some processes may never get network 657 loge("unable to register INetworkPolicyListener" + e.toString()); 658 } 659 660 final PowerManager powerManager = (PowerManager) context.getSystemService( 661 Context.POWER_SERVICE); 662 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 663 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 664 com.android.internal.R.integer.config_networkTransitionTimeout); 665 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 666 667 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 668 669 // TODO: What is the "correct" way to do determine if this is a wifi only device? 670 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 671 log("wifiOnly=" + wifiOnly); 672 String[] naStrings = context.getResources().getStringArray( 673 com.android.internal.R.array.networkAttributes); 674 for (String naString : naStrings) { 675 try { 676 NetworkConfig n = new NetworkConfig(naString); 677 if (VDBG) log("naString=" + naString + " config=" + n); 678 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 679 loge("Error in networkAttributes - ignoring attempt to define type " + 680 n.type); 681 continue; 682 } 683 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 684 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 685 n.type); 686 continue; 687 } 688 if (mNetConfigs[n.type] != null) { 689 loge("Error in networkAttributes - ignoring attempt to redefine type " + 690 n.type); 691 continue; 692 } 693 mLegacyTypeTracker.addSupportedType(n.type); 694 695 mNetConfigs[n.type] = n; 696 mNetworksDefined++; 697 } catch(Exception e) { 698 // ignore it - leave the entry null 699 } 700 } 701 702 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 703 if (mNetConfigs[TYPE_VPN] == null) { 704 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 705 // don't need to add TYPE_VPN to mNetConfigs. 706 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 707 mNetworksDefined++; // used only in the log() statement below. 708 } 709 710 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 711 712 mProtectedNetworks = new ArrayList<Integer>(); 713 int[] protectedNetworks = context.getResources().getIntArray( 714 com.android.internal.R.array.config_protectedNetworks); 715 for (int p : protectedNetworks) { 716 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 717 mProtectedNetworks.add(p); 718 } else { 719 if (DBG) loge("Ignoring protectedNetwork " + p); 720 } 721 } 722 723 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 724 && SystemProperties.get("ro.build.type").equals("eng"); 725 726 mTethering = new Tethering(mContext, mNetd, statsService); 727 728 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 729 730 //set up the listener for user state for creating user VPNs 731 IntentFilter intentFilter = new IntentFilter(); 732 intentFilter.addAction(Intent.ACTION_USER_STARTING); 733 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 734 intentFilter.addAction(Intent.ACTION_USER_ADDED); 735 intentFilter.addAction(Intent.ACTION_USER_REMOVED); 736 intentFilter.addAction(Intent.ACTION_USER_UNLOCKED); 737 mContext.registerReceiverAsUser( 738 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 739 740 try { 741 mNetd.registerObserver(mTethering); 742 mNetd.registerObserver(mDataActivityObserver); 743 } catch (RemoteException e) { 744 loge("Error registering observer :" + e); 745 } 746 747 if (DBG) { 748 mInetLog = new ArrayList(); 749 } 750 751 mSettingsObserver = new SettingsObserver(mContext, mHandler); 752 registerSettingsCallbacks(); 753 754 mDataConnectionStats = new DataConnectionStats(mContext); 755 mDataConnectionStats.startMonitoring(); 756 757 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 758 759 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 760 761 mKeepaliveTracker = new KeepaliveTracker(mHandler); 762 } 763 764 private NetworkRequest createInternetRequestForTransport(int transportType) { 765 NetworkCapabilities netCap = new NetworkCapabilities(); 766 netCap.addCapability(NET_CAPABILITY_INTERNET); 767 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 768 if (transportType > -1) { 769 netCap.addTransportType(transportType); 770 } 771 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 772 } 773 774 private void handleMobileDataAlwaysOn() { 775 final boolean enable = (Settings.Global.getInt( 776 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 777 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 778 if (enable == isEnabled) { 779 return; // Nothing to do. 780 } 781 782 if (enable) { 783 handleRegisterNetworkRequest(new NetworkRequestInfo( 784 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestType.REQUEST)); 785 } else { 786 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 787 } 788 } 789 790 private void registerSettingsCallbacks() { 791 // Watch for global HTTP proxy changes. 792 mSettingsObserver.observe( 793 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 794 EVENT_APPLY_GLOBAL_HTTP_PROXY); 795 796 // Watch for whether or not to keep mobile data always on. 797 mSettingsObserver.observe( 798 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 799 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 800 } 801 802 private synchronized int nextNetworkRequestId() { 803 return mNextNetworkRequestId++; 804 } 805 806 @VisibleForTesting 807 protected int reserveNetId() { 808 synchronized (mNetworkForNetId) { 809 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 810 int netId = mNextNetId; 811 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 812 // Make sure NetID unused. http://b/16815182 813 if (!mNetIdInUse.get(netId)) { 814 mNetIdInUse.put(netId, true); 815 return netId; 816 } 817 } 818 } 819 throw new IllegalStateException("No free netIds"); 820 } 821 822 private NetworkState getFilteredNetworkState(int networkType, int uid) { 823 NetworkInfo info = null; 824 LinkProperties lp = null; 825 NetworkCapabilities nc = null; 826 Network network = null; 827 String subscriberId = null; 828 829 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 830 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 831 if (nai != null) { 832 synchronized (nai) { 833 info = new NetworkInfo(nai.networkInfo); 834 lp = new LinkProperties(nai.linkProperties); 835 nc = new NetworkCapabilities(nai.networkCapabilities); 836 // Network objects are outwardly immutable so there is no point to duplicating. 837 // Duplicating also precludes sharing socket factories and connection pools. 838 network = nai.network; 839 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 840 } 841 info.setType(networkType); 842 } else { 843 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 844 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 845 info.setIsAvailable(true); 846 lp = new LinkProperties(); 847 nc = new NetworkCapabilities(); 848 network = null; 849 } 850 info = getFilteredNetworkInfo(info, lp, uid); 851 } 852 853 return new NetworkState(info, lp, nc, network, subscriberId, null); 854 } 855 856 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 857 if (network == null) { 858 return null; 859 } 860 synchronized (mNetworkForNetId) { 861 return mNetworkForNetId.get(network.netId); 862 } 863 }; 864 865 private Network[] getVpnUnderlyingNetworks(int uid) { 866 if (!mLockdownEnabled) { 867 int user = UserHandle.getUserId(uid); 868 synchronized (mVpns) { 869 Vpn vpn = mVpns.get(user); 870 if (vpn != null && vpn.appliesToUid(uid)) { 871 return vpn.getUnderlyingNetworks(); 872 } 873 } 874 } 875 return null; 876 } 877 878 private NetworkState getUnfilteredActiveNetworkState(int uid) { 879 NetworkInfo info = null; 880 LinkProperties lp = null; 881 NetworkCapabilities nc = null; 882 Network network = null; 883 String subscriberId = null; 884 885 NetworkAgentInfo nai = getDefaultNetwork(); 886 887 final Network[] networks = getVpnUnderlyingNetworks(uid); 888 if (networks != null) { 889 // getUnderlyingNetworks() returns: 890 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 891 // empty array => the VPN explicitly said "no default network". 892 // non-empty array => the VPN specified one or more default networks; we use the 893 // first one. 894 if (networks.length > 0) { 895 nai = getNetworkAgentInfoForNetwork(networks[0]); 896 } else { 897 nai = null; 898 } 899 } 900 901 if (nai != null) { 902 synchronized (nai) { 903 info = new NetworkInfo(nai.networkInfo); 904 lp = new LinkProperties(nai.linkProperties); 905 nc = new NetworkCapabilities(nai.networkCapabilities); 906 // Network objects are outwardly immutable so there is no point to duplicating. 907 // Duplicating also precludes sharing socket factories and connection pools. 908 network = nai.network; 909 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 910 } 911 } 912 913 return new NetworkState(info, lp, nc, network, subscriberId, null); 914 } 915 916 /** 917 * Check if UID should be blocked from using the network with the given LinkProperties. 918 */ 919 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 920 final boolean networkCostly; 921 final int uidRules; 922 923 final String iface = (lp == null ? "" : lp.getInterfaceName()); 924 synchronized (mRulesLock) { 925 networkCostly = mMeteredIfaces.contains(iface); 926 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 927 } 928 929 if (uidRules == RULE_REJECT_ALL) { 930 return true; 931 } else if ((uidRules == RULE_REJECT_METERED) && networkCostly) { 932 return true; 933 } else { 934 return false; 935 } 936 } 937 938 private void maybeLogBlockedNetworkInfo(NetworkInfo ni, int uid) { 939 if (ni == null || !LOGD_BLOCKED_NETWORKINFO) return; 940 boolean removed = false; 941 boolean added = false; 942 synchronized (mBlockedAppUids) { 943 if (ni.getDetailedState() == DetailedState.BLOCKED && mBlockedAppUids.add(uid)) { 944 added = true; 945 } else if (ni.isConnected() && mBlockedAppUids.remove(uid)) { 946 removed = true; 947 } 948 } 949 if (added) log("Returning blocked NetworkInfo to uid=" + uid); 950 else if (removed) log("Returning unblocked NetworkInfo to uid=" + uid); 951 } 952 953 /** 954 * Return a filtered {@link NetworkInfo}, potentially marked 955 * {@link DetailedState#BLOCKED} based on 956 * {@link #isNetworkWithLinkPropertiesBlocked}. 957 */ 958 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 959 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 960 // network is blocked; clone and override state 961 info = new NetworkInfo(info); 962 info.setDetailedState(DetailedState.BLOCKED, null, null); 963 } 964 if (info != null && mLockdownTracker != null) { 965 info = mLockdownTracker.augmentNetworkInfo(info); 966 if (VDBG) log("returning Locked NetworkInfo"); 967 } 968 return info; 969 } 970 971 /** 972 * Return NetworkInfo for the active (i.e., connected) network interface. 973 * It is assumed that at most one network is active at a time. If more 974 * than one is active, it is indeterminate which will be returned. 975 * @return the info for the active network, or {@code null} if none is 976 * active 977 */ 978 @Override 979 public NetworkInfo getActiveNetworkInfo() { 980 enforceAccessPermission(); 981 final int uid = Binder.getCallingUid(); 982 NetworkState state = getUnfilteredActiveNetworkState(uid); 983 NetworkInfo ni = getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 984 maybeLogBlockedNetworkInfo(ni, uid); 985 return ni; 986 } 987 988 @Override 989 public Network getActiveNetwork() { 990 enforceAccessPermission(); 991 return getActiveNetworkForUidInternal(Binder.getCallingUid()); 992 } 993 994 @Override 995 public Network getActiveNetworkForUid(int uid) { 996 enforceConnectivityInternalPermission(); 997 return getActiveNetworkForUidInternal(uid); 998 } 999 1000 private Network getActiveNetworkForUidInternal(final int uid) { 1001 final int user = UserHandle.getUserId(uid); 1002 int vpnNetId = NETID_UNSET; 1003 synchronized (mVpns) { 1004 final Vpn vpn = mVpns.get(user); 1005 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 1006 } 1007 NetworkAgentInfo nai; 1008 if (vpnNetId != NETID_UNSET) { 1009 synchronized (mNetworkForNetId) { 1010 nai = mNetworkForNetId.get(vpnNetId); 1011 } 1012 if (nai != null) return nai.network; 1013 } 1014 nai = getDefaultNetwork(); 1015 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 1016 return nai != null ? nai.network : null; 1017 } 1018 1019 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1020 enforceAccessPermission(); 1021 final int uid = Binder.getCallingUid(); 1022 NetworkState state = getUnfilteredActiveNetworkState(uid); 1023 return state.networkInfo; 1024 } 1025 1026 @Override 1027 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1028 enforceConnectivityInternalPermission(); 1029 NetworkState state = getUnfilteredActiveNetworkState(uid); 1030 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1031 } 1032 1033 @Override 1034 public NetworkInfo getNetworkInfo(int networkType) { 1035 enforceAccessPermission(); 1036 final int uid = Binder.getCallingUid(); 1037 if (getVpnUnderlyingNetworks(uid) != null) { 1038 // A VPN is active, so we may need to return one of its underlying networks. This 1039 // information is not available in LegacyTypeTracker, so we have to get it from 1040 // getUnfilteredActiveNetworkState. 1041 NetworkState state = getUnfilteredActiveNetworkState(uid); 1042 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1043 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1044 } 1045 } 1046 NetworkState state = getFilteredNetworkState(networkType, uid); 1047 return state.networkInfo; 1048 } 1049 1050 @Override 1051 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1052 enforceAccessPermission(); 1053 final int uid = Binder.getCallingUid(); 1054 NetworkInfo info = null; 1055 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1056 if (nai != null) { 1057 synchronized (nai) { 1058 info = new NetworkInfo(nai.networkInfo); 1059 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1060 } 1061 } 1062 return info; 1063 } 1064 1065 @Override 1066 public NetworkInfo[] getAllNetworkInfo() { 1067 enforceAccessPermission(); 1068 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1069 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1070 networkType++) { 1071 NetworkInfo info = getNetworkInfo(networkType); 1072 if (info != null) { 1073 result.add(info); 1074 } 1075 } 1076 return result.toArray(new NetworkInfo[result.size()]); 1077 } 1078 1079 @Override 1080 public Network getNetworkForType(int networkType) { 1081 enforceAccessPermission(); 1082 final int uid = Binder.getCallingUid(); 1083 NetworkState state = getFilteredNetworkState(networkType, uid); 1084 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1085 return state.network; 1086 } 1087 return null; 1088 } 1089 1090 @Override 1091 public Network[] getAllNetworks() { 1092 enforceAccessPermission(); 1093 synchronized (mNetworkForNetId) { 1094 final Network[] result = new Network[mNetworkForNetId.size()]; 1095 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1096 result[i] = mNetworkForNetId.valueAt(i).network; 1097 } 1098 return result; 1099 } 1100 } 1101 1102 @Override 1103 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1104 // The basic principle is: if an app's traffic could possibly go over a 1105 // network, without the app doing anything multinetwork-specific, 1106 // (hence, by "default"), then include that network's capabilities in 1107 // the array. 1108 // 1109 // In the normal case, app traffic only goes over the system's default 1110 // network connection, so that's the only network returned. 1111 // 1112 // With a VPN in force, some app traffic may go into the VPN, and thus 1113 // over whatever underlying networks the VPN specifies, while other app 1114 // traffic may go over the system default network (e.g.: a split-tunnel 1115 // VPN, or an app disallowed by the VPN), so the set of networks 1116 // returned includes the VPN's underlying networks and the system 1117 // default. 1118 enforceAccessPermission(); 1119 1120 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1121 1122 NetworkAgentInfo nai = getDefaultNetwork(); 1123 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1124 if (nc != null) { 1125 result.put(nai.network, nc); 1126 } 1127 1128 if (!mLockdownEnabled) { 1129 synchronized (mVpns) { 1130 Vpn vpn = mVpns.get(userId); 1131 if (vpn != null) { 1132 Network[] networks = vpn.getUnderlyingNetworks(); 1133 if (networks != null) { 1134 for (Network network : networks) { 1135 nai = getNetworkAgentInfoForNetwork(network); 1136 nc = getNetworkCapabilitiesInternal(nai); 1137 if (nc != null) { 1138 result.put(network, nc); 1139 } 1140 } 1141 } 1142 } 1143 } 1144 } 1145 1146 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1147 out = result.values().toArray(out); 1148 return out; 1149 } 1150 1151 @Override 1152 public boolean isNetworkSupported(int networkType) { 1153 enforceAccessPermission(); 1154 return mLegacyTypeTracker.isTypeSupported(networkType); 1155 } 1156 1157 /** 1158 * Return LinkProperties for the active (i.e., connected) default 1159 * network interface. It is assumed that at most one default network 1160 * is active at a time. If more than one is active, it is indeterminate 1161 * which will be returned. 1162 * @return the ip properties for the active network, or {@code null} if 1163 * none is active 1164 */ 1165 @Override 1166 public LinkProperties getActiveLinkProperties() { 1167 enforceAccessPermission(); 1168 final int uid = Binder.getCallingUid(); 1169 NetworkState state = getUnfilteredActiveNetworkState(uid); 1170 return state.linkProperties; 1171 } 1172 1173 @Override 1174 public LinkProperties getLinkPropertiesForType(int networkType) { 1175 enforceAccessPermission(); 1176 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1177 if (nai != null) { 1178 synchronized (nai) { 1179 return new LinkProperties(nai.linkProperties); 1180 } 1181 } 1182 return null; 1183 } 1184 1185 // TODO - this should be ALL networks 1186 @Override 1187 public LinkProperties getLinkProperties(Network network) { 1188 enforceAccessPermission(); 1189 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1190 if (nai != null) { 1191 synchronized (nai) { 1192 return new LinkProperties(nai.linkProperties); 1193 } 1194 } 1195 return null; 1196 } 1197 1198 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1199 if (nai != null) { 1200 synchronized (nai) { 1201 if (nai.networkCapabilities != null) { 1202 return new NetworkCapabilities(nai.networkCapabilities); 1203 } 1204 } 1205 } 1206 return null; 1207 } 1208 1209 @Override 1210 public NetworkCapabilities getNetworkCapabilities(Network network) { 1211 enforceAccessPermission(); 1212 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1213 } 1214 1215 @Override 1216 public NetworkState[] getAllNetworkState() { 1217 // Require internal since we're handing out IMSI details 1218 enforceConnectivityInternalPermission(); 1219 1220 final ArrayList<NetworkState> result = Lists.newArrayList(); 1221 for (Network network : getAllNetworks()) { 1222 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1223 if (nai != null) { 1224 synchronized (nai) { 1225 final String subscriberId = (nai.networkMisc != null) 1226 ? nai.networkMisc.subscriberId : null; 1227 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1228 nai.networkCapabilities, network, subscriberId, null)); 1229 } 1230 } 1231 } 1232 return result.toArray(new NetworkState[result.size()]); 1233 } 1234 1235 @Override 1236 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1237 enforceAccessPermission(); 1238 final int uid = Binder.getCallingUid(); 1239 final long token = Binder.clearCallingIdentity(); 1240 try { 1241 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1242 if (state.networkInfo != null) { 1243 try { 1244 return mPolicyManager.getNetworkQuotaInfo(state); 1245 } catch (RemoteException e) { 1246 } 1247 } 1248 return null; 1249 } finally { 1250 Binder.restoreCallingIdentity(token); 1251 } 1252 } 1253 1254 @Override 1255 public boolean isActiveNetworkMetered() { 1256 enforceAccessPermission(); 1257 final int uid = Binder.getCallingUid(); 1258 final long token = Binder.clearCallingIdentity(); 1259 try { 1260 return isActiveNetworkMeteredUnchecked(uid); 1261 } finally { 1262 Binder.restoreCallingIdentity(token); 1263 } 1264 } 1265 1266 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1267 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1268 if (state.networkInfo != null) { 1269 try { 1270 return mPolicyManager.isNetworkMetered(state); 1271 } catch (RemoteException e) { 1272 } 1273 } 1274 return false; 1275 } 1276 1277 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1278 @Override 1279 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1280 int deviceType = Integer.parseInt(label); 1281 sendDataActivityBroadcast(deviceType, active, tsNanos); 1282 } 1283 }; 1284 1285 /** 1286 * Ensure that a network route exists to deliver traffic to the specified 1287 * host via the specified network interface. 1288 * @param networkType the type of the network over which traffic to the 1289 * specified host is to be routed 1290 * @param hostAddress the IP address of the host to which the route is 1291 * desired 1292 * @return {@code true} on success, {@code false} on failure 1293 */ 1294 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1295 enforceChangePermission(); 1296 if (mProtectedNetworks.contains(networkType)) { 1297 enforceConnectivityInternalPermission(); 1298 } 1299 1300 InetAddress addr; 1301 try { 1302 addr = InetAddress.getByAddress(hostAddress); 1303 } catch (UnknownHostException e) { 1304 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1305 return false; 1306 } 1307 1308 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1309 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1310 return false; 1311 } 1312 1313 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1314 if (nai == null) { 1315 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1316 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1317 } else { 1318 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1319 } 1320 return false; 1321 } 1322 1323 DetailedState netState; 1324 synchronized (nai) { 1325 netState = nai.networkInfo.getDetailedState(); 1326 } 1327 1328 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1329 if (VDBG) { 1330 log("requestRouteToHostAddress on down network " 1331 + "(" + networkType + ") - dropped" 1332 + " netState=" + netState); 1333 } 1334 return false; 1335 } 1336 1337 final int uid = Binder.getCallingUid(); 1338 final long token = Binder.clearCallingIdentity(); 1339 try { 1340 LinkProperties lp; 1341 int netId; 1342 synchronized (nai) { 1343 lp = nai.linkProperties; 1344 netId = nai.network.netId; 1345 } 1346 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1347 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1348 return ok; 1349 } finally { 1350 Binder.restoreCallingIdentity(token); 1351 } 1352 } 1353 1354 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1355 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1356 if (bestRoute == null) { 1357 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1358 } else { 1359 String iface = bestRoute.getInterface(); 1360 if (bestRoute.getGateway().equals(addr)) { 1361 // if there is no better route, add the implied hostroute for our gateway 1362 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1363 } else { 1364 // if we will connect to this through another route, add a direct route 1365 // to it's gateway 1366 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1367 } 1368 } 1369 if (DBG) log("Adding legacy route " + bestRoute + 1370 " for UID/PID " + uid + "/" + Binder.getCallingPid()); 1371 try { 1372 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1373 } catch (Exception e) { 1374 // never crash - catch them all 1375 if (DBG) loge("Exception trying to add a route: " + e); 1376 return false; 1377 } 1378 return true; 1379 } 1380 1381 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1382 @Override 1383 public void onUidRulesChanged(int uid, int uidRules) { 1384 // caller is NPMS, since we only register with them 1385 if (LOGD_RULES) { 1386 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1387 } 1388 1389 synchronized (mRulesLock) { 1390 // skip update when we've already applied rules 1391 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1392 if (oldRules == uidRules) return; 1393 1394 mUidRules.put(uid, uidRules); 1395 } 1396 1397 // TODO: notify UID when it has requested targeted updates 1398 } 1399 1400 @Override 1401 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1402 // caller is NPMS, since we only register with them 1403 if (LOGD_RULES) { 1404 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1405 } 1406 1407 synchronized (mRulesLock) { 1408 mMeteredIfaces.clear(); 1409 for (String iface : meteredIfaces) { 1410 mMeteredIfaces.add(iface); 1411 } 1412 } 1413 } 1414 1415 @Override 1416 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1417 // caller is NPMS, since we only register with them 1418 if (LOGD_RULES) { 1419 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1420 } 1421 } 1422 }; 1423 1424 /** 1425 * Require that the caller is either in the same user or has appropriate permission to interact 1426 * across users. 1427 * 1428 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1429 */ 1430 private void enforceCrossUserPermission(int userId) { 1431 if (userId == UserHandle.getCallingUserId()) { 1432 // Not a cross-user call. 1433 return; 1434 } 1435 mContext.enforceCallingOrSelfPermission( 1436 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1437 "ConnectivityService"); 1438 } 1439 1440 private void enforceInternetPermission() { 1441 mContext.enforceCallingOrSelfPermission( 1442 android.Manifest.permission.INTERNET, 1443 "ConnectivityService"); 1444 } 1445 1446 private void enforceAccessPermission() { 1447 mContext.enforceCallingOrSelfPermission( 1448 android.Manifest.permission.ACCESS_NETWORK_STATE, 1449 "ConnectivityService"); 1450 } 1451 1452 private void enforceChangePermission() { 1453 ConnectivityManager.enforceChangePermission(mContext); 1454 } 1455 1456 private void enforceTetherAccessPermission() { 1457 mContext.enforceCallingOrSelfPermission( 1458 android.Manifest.permission.ACCESS_NETWORK_STATE, 1459 "ConnectivityService"); 1460 } 1461 1462 private void enforceConnectivityInternalPermission() { 1463 mContext.enforceCallingOrSelfPermission( 1464 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1465 "ConnectivityService"); 1466 } 1467 1468 private void enforceKeepalivePermission() { 1469 mContext.enforceCallingOrSelfPermission(KeepaliveTracker.PERMISSION, "ConnectivityService"); 1470 } 1471 1472 public void sendConnectedBroadcast(NetworkInfo info) { 1473 enforceConnectivityInternalPermission(); 1474 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1475 } 1476 1477 private void sendInetConditionBroadcast(NetworkInfo info) { 1478 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1479 } 1480 1481 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1482 if (mLockdownTracker != null) { 1483 info = mLockdownTracker.augmentNetworkInfo(info); 1484 } 1485 1486 Intent intent = new Intent(bcastType); 1487 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1488 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1489 if (info.isFailover()) { 1490 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1491 info.setFailover(false); 1492 } 1493 if (info.getReason() != null) { 1494 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1495 } 1496 if (info.getExtraInfo() != null) { 1497 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1498 info.getExtraInfo()); 1499 } 1500 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1501 return intent; 1502 } 1503 1504 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1505 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1506 } 1507 1508 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1509 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1510 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1511 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1512 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1513 final long ident = Binder.clearCallingIdentity(); 1514 try { 1515 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1516 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1517 } finally { 1518 Binder.restoreCallingIdentity(ident); 1519 } 1520 } 1521 1522 private void sendStickyBroadcast(Intent intent) { 1523 synchronized(this) { 1524 if (!mSystemReady) { 1525 mInitialBroadcast = new Intent(intent); 1526 } 1527 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1528 if (VDBG) { 1529 log("sendStickyBroadcast: action=" + intent.getAction()); 1530 } 1531 1532 Bundle options = null; 1533 final long ident = Binder.clearCallingIdentity(); 1534 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1535 final NetworkInfo ni = intent.getParcelableExtra( 1536 ConnectivityManager.EXTRA_NETWORK_INFO); 1537 if (ni.getType() == ConnectivityManager.TYPE_MOBILE_SUPL) { 1538 intent.setAction(ConnectivityManager.CONNECTIVITY_ACTION_SUPL); 1539 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1540 } else { 1541 BroadcastOptions opts = BroadcastOptions.makeBasic(); 1542 opts.setMaxManifestReceiverApiLevel(Build.VERSION_CODES.M); 1543 options = opts.toBundle(); 1544 } 1545 final IBatteryStats bs = BatteryStatsService.getService(); 1546 try { 1547 bs.noteConnectivityChanged(intent.getIntExtra( 1548 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1549 ni != null ? ni.getState().toString() : "?"); 1550 } catch (RemoteException e) { 1551 } 1552 } 1553 try { 1554 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL, options); 1555 } finally { 1556 Binder.restoreCallingIdentity(ident); 1557 } 1558 } 1559 } 1560 1561 void systemReady() { 1562 loadGlobalProxy(); 1563 1564 synchronized(this) { 1565 mSystemReady = true; 1566 if (mInitialBroadcast != null) { 1567 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1568 mInitialBroadcast = null; 1569 } 1570 } 1571 // load the global proxy at startup 1572 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1573 1574 // Try bringing up tracker, but KeyStore won't be ready yet for secondary users so wait 1575 // for user to unlock device too. 1576 updateLockdownVpn(); 1577 1578 // Configure whether mobile data is always on. 1579 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1580 1581 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1582 1583 mPermissionMonitor.startMonitoring(); 1584 } 1585 1586 /** 1587 * Setup data activity tracking for the given network. 1588 * 1589 * Every {@code setupDataActivityTracking} should be paired with a 1590 * {@link #removeDataActivityTracking} for cleanup. 1591 */ 1592 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1593 final String iface = networkAgent.linkProperties.getInterfaceName(); 1594 1595 final int timeout; 1596 int type = ConnectivityManager.TYPE_NONE; 1597 1598 if (networkAgent.networkCapabilities.hasTransport( 1599 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1600 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1601 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1602 10); 1603 type = ConnectivityManager.TYPE_MOBILE; 1604 } else if (networkAgent.networkCapabilities.hasTransport( 1605 NetworkCapabilities.TRANSPORT_WIFI)) { 1606 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1607 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1608 15); 1609 type = ConnectivityManager.TYPE_WIFI; 1610 } else { 1611 // do not track any other networks 1612 timeout = 0; 1613 } 1614 1615 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1616 try { 1617 mNetd.addIdleTimer(iface, timeout, type); 1618 } catch (Exception e) { 1619 // You shall not crash! 1620 loge("Exception in setupDataActivityTracking " + e); 1621 } 1622 } 1623 } 1624 1625 /** 1626 * Remove data activity tracking when network disconnects. 1627 */ 1628 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1629 final String iface = networkAgent.linkProperties.getInterfaceName(); 1630 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1631 1632 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1633 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1634 try { 1635 // the call fails silently if no idletimer setup for this interface 1636 mNetd.removeIdleTimer(iface); 1637 } catch (Exception e) { 1638 loge("Exception in removeDataActivityTracking " + e); 1639 } 1640 } 1641 } 1642 1643 /** 1644 * Reads the network specific MTU size from reources. 1645 * and set it on it's iface. 1646 */ 1647 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1648 final String iface = newLp.getInterfaceName(); 1649 final int mtu = newLp.getMtu(); 1650 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1651 if (VDBG) log("identical MTU - not setting"); 1652 return; 1653 } 1654 1655 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1656 if (mtu != 0) loge("Unexpected mtu value: " + mtu + ", " + iface); 1657 return; 1658 } 1659 1660 // Cannot set MTU without interface name 1661 if (TextUtils.isEmpty(iface)) { 1662 loge("Setting MTU size with null iface."); 1663 return; 1664 } 1665 1666 try { 1667 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 1668 mNetd.setMtu(iface, mtu); 1669 } catch (Exception e) { 1670 Slog.e(TAG, "exception in setMtu()" + e); 1671 } 1672 } 1673 1674 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1675 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1676 1677 // Overridden for testing purposes to avoid writing to SystemProperties. 1678 @VisibleForTesting 1679 protected int getDefaultTcpRwnd() { 1680 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1681 } 1682 1683 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1684 if (isDefaultNetwork(nai) == false) { 1685 return; 1686 } 1687 1688 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1689 String[] values = null; 1690 if (tcpBufferSizes != null) { 1691 values = tcpBufferSizes.split(","); 1692 } 1693 1694 if (values == null || values.length != 6) { 1695 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1696 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1697 values = tcpBufferSizes.split(","); 1698 } 1699 1700 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1701 1702 try { 1703 if (VDBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1704 1705 final String prefix = "/sys/kernel/ipv4/tcp_"; 1706 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1707 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1708 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1709 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1710 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1711 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1712 mCurrentTcpBufferSizes = tcpBufferSizes; 1713 } catch (IOException e) { 1714 loge("Can't set TCP buffer sizes:" + e); 1715 } 1716 1717 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1718 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1719 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1720 if (rwndValue != 0) { 1721 SystemProperties.set(sysctlKey, rwndValue.toString()); 1722 } 1723 } 1724 1725 private void flushVmDnsCache() { 1726 /* 1727 * Tell the VMs to toss their DNS caches 1728 */ 1729 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1730 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1731 /* 1732 * Connectivity events can happen before boot has completed ... 1733 */ 1734 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1735 final long ident = Binder.clearCallingIdentity(); 1736 try { 1737 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1738 } finally { 1739 Binder.restoreCallingIdentity(ident); 1740 } 1741 } 1742 1743 @Override 1744 public int getRestoreDefaultNetworkDelay(int networkType) { 1745 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1746 NETWORK_RESTORE_DELAY_PROP_NAME); 1747 if(restoreDefaultNetworkDelayStr != null && 1748 restoreDefaultNetworkDelayStr.length() != 0) { 1749 try { 1750 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1751 } catch (NumberFormatException e) { 1752 } 1753 } 1754 // if the system property isn't set, use the value for the apn type 1755 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1756 1757 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1758 (mNetConfigs[networkType] != null)) { 1759 ret = mNetConfigs[networkType].restoreTime; 1760 } 1761 return ret; 1762 } 1763 1764 private boolean argsContain(String[] args, String target) { 1765 for (String arg : args) { 1766 if (arg.equals(target)) return true; 1767 } 1768 return false; 1769 } 1770 1771 private void dumpNetworkDiagnostics(IndentingPrintWriter pw) { 1772 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1773 final long DIAG_TIME_MS = 5000; 1774 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1775 // Start gathering diagnostic information. 1776 netDiags.add(new NetworkDiagnostics( 1777 nai.network, 1778 new LinkProperties(nai.linkProperties), // Must be a copy. 1779 DIAG_TIME_MS)); 1780 } 1781 1782 for (NetworkDiagnostics netDiag : netDiags) { 1783 pw.println(); 1784 netDiag.waitForMeasurements(); 1785 netDiag.dump(pw); 1786 } 1787 } 1788 1789 @Override 1790 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1791 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1792 if (mContext.checkCallingOrSelfPermission( 1793 android.Manifest.permission.DUMP) 1794 != PackageManager.PERMISSION_GRANTED) { 1795 pw.println("Permission Denial: can't dump ConnectivityService " + 1796 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1797 Binder.getCallingUid()); 1798 return; 1799 } 1800 1801 if (argsContain(args, "--diag")) { 1802 dumpNetworkDiagnostics(pw); 1803 return; 1804 } 1805 1806 pw.print("NetworkFactories for:"); 1807 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1808 pw.print(" " + nfi.name); 1809 } 1810 pw.println(); 1811 pw.println(); 1812 1813 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 1814 pw.print("Active default network: "); 1815 if (defaultNai == null) { 1816 pw.println("none"); 1817 } else { 1818 pw.println(defaultNai.network.netId); 1819 } 1820 pw.println(); 1821 1822 pw.println("Current Networks:"); 1823 pw.increaseIndent(); 1824 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1825 pw.println(nai.toString()); 1826 pw.increaseIndent(); 1827 pw.println("Requests:"); 1828 pw.increaseIndent(); 1829 for (int i = 0; i < nai.networkRequests.size(); i++) { 1830 pw.println(nai.networkRequests.valueAt(i).toString()); 1831 } 1832 pw.decreaseIndent(); 1833 pw.println("Lingered:"); 1834 pw.increaseIndent(); 1835 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1836 pw.decreaseIndent(); 1837 pw.decreaseIndent(); 1838 } 1839 pw.decreaseIndent(); 1840 pw.println(); 1841 1842 pw.println("Network Requests:"); 1843 pw.increaseIndent(); 1844 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1845 pw.println(nri.toString()); 1846 } 1847 pw.println(); 1848 pw.decreaseIndent(); 1849 1850 mLegacyTypeTracker.dump(pw); 1851 1852 synchronized (this) { 1853 pw.print("mNetTransitionWakeLock: currently " + 1854 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1855 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1856 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1857 } else { 1858 pw.println(", last requested never"); 1859 } 1860 } 1861 1862 pw.println(); 1863 mTethering.dump(fd, pw, args); 1864 1865 pw.println(); 1866 mKeepaliveTracker.dump(pw); 1867 1868 pw.println(); 1869 1870 if (mInetLog != null && mInetLog.size() > 0) { 1871 pw.println(); 1872 pw.println("Inet condition reports:"); 1873 pw.increaseIndent(); 1874 for(int i = 0; i < mInetLog.size(); i++) { 1875 pw.println(mInetLog.get(i)); 1876 } 1877 pw.decreaseIndent(); 1878 } 1879 1880 if (argsContain(args, "--short") == false) { 1881 pw.println(); 1882 synchronized (mValidationLogs) { 1883 pw.println("mValidationLogs (most recent first):"); 1884 for (Pair<Network,ReadOnlyLocalLog> p : mValidationLogs) { 1885 pw.println(p.first); 1886 pw.increaseIndent(); 1887 p.second.dump(fd, pw, args); 1888 pw.decreaseIndent(); 1889 } 1890 } 1891 1892 pw.println(); 1893 pw.println("mNetworkRequestInfoLogs (most recent first):"); 1894 pw.increaseIndent(); 1895 mNetworkRequestInfoLogs.reverseDump(fd, pw, args); 1896 pw.decreaseIndent(); 1897 } 1898 } 1899 1900 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, int what) { 1901 if (nai.network == null) return false; 1902 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1903 if (officialNai != null && officialNai.equals(nai)) return true; 1904 if (officialNai != null || VDBG) { 1905 final String msg = sMagicDecoderRing.get(what, Integer.toString(what)); 1906 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1907 " - " + nai); 1908 } 1909 return false; 1910 } 1911 1912 private boolean isRequest(NetworkRequest request) { 1913 return mNetworkRequests.get(request).isRequest(); 1914 } 1915 1916 // must be stateless - things change under us. 1917 private class NetworkStateTrackerHandler extends Handler { 1918 public NetworkStateTrackerHandler(Looper looper) { 1919 super(looper); 1920 } 1921 1922 private boolean maybeHandleAsyncChannelMessage(Message msg) { 1923 switch (msg.what) { 1924 default: 1925 return false; 1926 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1927 handleAsyncChannelHalfConnect(msg); 1928 break; 1929 } 1930 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1931 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1932 if (nai != null) nai.asyncChannel.disconnect(); 1933 break; 1934 } 1935 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1936 handleAsyncChannelDisconnected(msg); 1937 break; 1938 } 1939 } 1940 return true; 1941 } 1942 1943 private void maybeHandleNetworkAgentMessage(Message msg) { 1944 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1945 if (nai == null) { 1946 if (VDBG) { 1947 final String what = sMagicDecoderRing.get(msg.what, Integer.toString(msg.what)); 1948 log(String.format("%s from unknown NetworkAgent", what)); 1949 } 1950 return; 1951 } 1952 1953 switch (msg.what) { 1954 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1955 final NetworkCapabilities networkCapabilities = (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 break; 1967 } 1968 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1969 if (VDBG) { 1970 log("Update of LinkProperties for " + nai.name() + 1971 "; created=" + nai.created); 1972 } 1973 LinkProperties oldLp = nai.linkProperties; 1974 synchronized (nai) { 1975 nai.linkProperties = (LinkProperties)msg.obj; 1976 } 1977 if (nai.created) updateLinkProperties(nai, oldLp); 1978 break; 1979 } 1980 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1981 NetworkInfo info = (NetworkInfo) msg.obj; 1982 updateNetworkInfo(nai, info); 1983 break; 1984 } 1985 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1986 Integer score = (Integer) msg.obj; 1987 if (score != null) updateNetworkScore(nai, score.intValue()); 1988 break; 1989 } 1990 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1991 try { 1992 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1993 } catch (Exception e) { 1994 // Never crash! 1995 loge("Exception in addVpnUidRanges: " + e); 1996 } 1997 break; 1998 } 1999 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 2000 try { 2001 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2002 } catch (Exception e) { 2003 // Never crash! 2004 loge("Exception in removeVpnUidRanges: " + e); 2005 } 2006 break; 2007 } 2008 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 2009 if (nai.created && !nai.networkMisc.explicitlySelected) { 2010 loge("ERROR: created network explicitly selected."); 2011 } 2012 nai.networkMisc.explicitlySelected = true; 2013 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 2014 break; 2015 } 2016 case NetworkAgent.EVENT_PACKET_KEEPALIVE: { 2017 mKeepaliveTracker.handleEventPacketKeepalive(nai, msg); 2018 break; 2019 } 2020 } 2021 } 2022 2023 private boolean maybeHandleNetworkMonitorMessage(Message msg) { 2024 switch (msg.what) { 2025 default: 2026 return false; 2027 case NetworkMonitor.EVENT_NETWORK_TESTED: { 2028 final NetworkAgentInfo nai; 2029 synchronized (mNetworkForNetId) { 2030 nai = mNetworkForNetId.get(msg.arg2); 2031 } 2032 if (nai != null) { 2033 final boolean valid = 2034 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2035 if (DBG) log(nai.name() + " validation " + (valid ? "passed" : "failed") + 2036 (msg.obj == null ? "" : " with redirect to " + (String)msg.obj)); 2037 if (valid != nai.lastValidated) { 2038 final int oldScore = nai.getCurrentScore(); 2039 nai.lastValidated = valid; 2040 nai.everValidated |= valid; 2041 updateCapabilities(nai, nai.networkCapabilities); 2042 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2043 if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); 2044 } 2045 updateInetCondition(nai); 2046 // Let the NetworkAgent know the state of its network 2047 Bundle redirectUrlBundle = new Bundle(); 2048 redirectUrlBundle.putString(NetworkAgent.REDIRECT_URL_KEY, (String)msg.obj); 2049 nai.asyncChannel.sendMessage( 2050 NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2051 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2052 0, redirectUrlBundle); 2053 } 2054 break; 2055 } 2056 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2057 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2058 if (isLiveNetworkAgent(nai, msg.what)) { 2059 handleLingerComplete(nai); 2060 } 2061 break; 2062 } 2063 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2064 final int netId = msg.arg2; 2065 final boolean visible = (msg.arg1 != 0); 2066 final NetworkAgentInfo nai; 2067 synchronized (mNetworkForNetId) { 2068 nai = mNetworkForNetId.get(netId); 2069 } 2070 // If captive portal status has changed, update capabilities. 2071 if (nai != null && (visible != nai.lastCaptivePortalDetected)) { 2072 nai.lastCaptivePortalDetected = visible; 2073 nai.everCaptivePortalDetected |= visible; 2074 updateCapabilities(nai, nai.networkCapabilities); 2075 } 2076 if (!visible) { 2077 setProvNotificationVisibleIntent(false, netId, null, 0, null, null, false); 2078 } else { 2079 if (nai == null) { 2080 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2081 break; 2082 } 2083 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2084 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), 2085 (PendingIntent)msg.obj, nai.networkMisc.explicitlySelected); 2086 } 2087 break; 2088 } 2089 } 2090 return true; 2091 } 2092 2093 @Override 2094 public void handleMessage(Message msg) { 2095 if (!maybeHandleAsyncChannelMessage(msg) && !maybeHandleNetworkMonitorMessage(msg)) { 2096 maybeHandleNetworkAgentMessage(msg); 2097 } 2098 } 2099 } 2100 2101 private void linger(NetworkAgentInfo nai) { 2102 nai.lingering = true; 2103 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 2104 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 2105 } 2106 2107 // Cancel any lingering so the linger timeout doesn't teardown a network. 2108 // This should be called when a network begins satisfying a NetworkRequest. 2109 // Note: depending on what state the NetworkMonitor is in (e.g., 2110 // if it's awaiting captive portal login, or if validation failed), this 2111 // may trigger a re-evaluation of the network. 2112 private void unlinger(NetworkAgentInfo nai) { 2113 nai.networkLingered.clear(); 2114 if (!nai.lingering) return; 2115 nai.lingering = false; 2116 if (VDBG) log("Canceling linger of " + nai.name()); 2117 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2118 } 2119 2120 private void handleAsyncChannelHalfConnect(Message msg) { 2121 AsyncChannel ac = (AsyncChannel) msg.obj; 2122 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2123 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2124 if (VDBG) log("NetworkFactory connected"); 2125 // A network factory has connected. Send it all current NetworkRequests. 2126 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2127 if (!nri.isRequest()) continue; 2128 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2129 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2130 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2131 } 2132 } else { 2133 loge("Error connecting NetworkFactory"); 2134 mNetworkFactoryInfos.remove(msg.obj); 2135 } 2136 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2137 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2138 if (VDBG) log("NetworkAgent connected"); 2139 // A network agent has requested a connection. Establish the connection. 2140 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2141 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2142 } else { 2143 loge("Error connecting NetworkAgent"); 2144 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2145 if (nai != null) { 2146 final boolean wasDefault = isDefaultNetwork(nai); 2147 synchronized (mNetworkForNetId) { 2148 mNetworkForNetId.remove(nai.network.netId); 2149 mNetIdInUse.delete(nai.network.netId); 2150 } 2151 // Just in case. 2152 mLegacyTypeTracker.remove(nai, wasDefault); 2153 } 2154 } 2155 } 2156 } 2157 2158 private void handleAsyncChannelDisconnected(Message msg) { 2159 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2160 if (nai != null) { 2161 if (DBG) { 2162 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2163 } 2164 // A network agent has disconnected. 2165 // TODO - if we move the logic to the network agent (have them disconnect 2166 // because they lost all their requests or because their score isn't good) 2167 // then they would disconnect organically, report their new state and then 2168 // disconnect the channel. 2169 if (nai.networkInfo.isConnected()) { 2170 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2171 null, null); 2172 } 2173 final boolean wasDefault = isDefaultNetwork(nai); 2174 if (wasDefault) { 2175 mDefaultInetConditionPublished = 0; 2176 } 2177 notifyIfacesChangedForNetworkStats(); 2178 // TODO - we shouldn't send CALLBACK_LOST to requests that can be satisfied 2179 // by other networks that are already connected. Perhaps that can be done by 2180 // sending all CALLBACK_LOST messages (for requests, not listens) at the end 2181 // of rematchAllNetworksAndRequests 2182 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2183 mKeepaliveTracker.handleStopAllKeepalives(nai, 2184 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 2185 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2186 mNetworkAgentInfos.remove(msg.replyTo); 2187 updateClat(null, nai.linkProperties, nai); 2188 synchronized (mNetworkForNetId) { 2189 // Remove the NetworkAgent, but don't mark the netId as 2190 // available until we've told netd to delete it below. 2191 mNetworkForNetId.remove(nai.network.netId); 2192 } 2193 // Remove all previously satisfied requests. 2194 for (int i = 0; i < nai.networkRequests.size(); i++) { 2195 NetworkRequest request = nai.networkRequests.valueAt(i); 2196 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2197 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2198 mNetworkForRequestId.remove(request.requestId); 2199 sendUpdatedScoreToFactories(request, 0); 2200 } 2201 } 2202 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2203 removeDataActivityTracking(nai); 2204 notifyLockdownVpn(nai); 2205 requestNetworkTransitionWakelock(nai.name()); 2206 } 2207 mLegacyTypeTracker.remove(nai, wasDefault); 2208 rematchAllNetworksAndRequests(null, 0); 2209 if (nai.created) { 2210 // Tell netd to clean up the configuration for this network 2211 // (routing rules, DNS, etc). 2212 // This may be slow as it requires a lot of netd shelling out to ip and 2213 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2214 // after we've rematched networks with requests which should make a potential 2215 // fallback network the default or requested a new network from the 2216 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2217 // long time. 2218 try { 2219 mNetd.removeNetwork(nai.network.netId); 2220 } catch (Exception e) { 2221 loge("Exception removing network: " + e); 2222 } 2223 } 2224 synchronized (mNetworkForNetId) { 2225 mNetIdInUse.delete(nai.network.netId); 2226 } 2227 } else { 2228 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2229 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2230 } 2231 } 2232 2233 // If this method proves to be too slow then we can maintain a separate 2234 // pendingIntent => NetworkRequestInfo map. 2235 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2236 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2237 Intent intent = pendingIntent.getIntent(); 2238 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2239 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2240 if (existingPendingIntent != null && 2241 existingPendingIntent.getIntent().filterEquals(intent)) { 2242 return entry.getValue(); 2243 } 2244 } 2245 return null; 2246 } 2247 2248 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2249 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2250 2251 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2252 if (existingRequest != null) { // remove the existing request. 2253 if (DBG) log("Replacing " + existingRequest.request + " with " 2254 + nri.request + " because their intents matched."); 2255 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2256 } 2257 handleRegisterNetworkRequest(nri); 2258 } 2259 2260 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2261 mNetworkRequests.put(nri.request, nri); 2262 mNetworkRequestInfoLogs.log("REGISTER " + nri); 2263 if (!nri.isRequest()) { 2264 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2265 if (nri.request.networkCapabilities.hasSignalStrength() && 2266 network.satisfiesImmutableCapabilitiesOf(nri.request)) { 2267 updateSignalStrengthThresholds(network, "REGISTER", nri.request); 2268 } 2269 } 2270 } 2271 rematchAllNetworksAndRequests(null, 0); 2272 if (nri.isRequest() && mNetworkForRequestId.get(nri.request.requestId) == null) { 2273 sendUpdatedScoreToFactories(nri.request, 0); 2274 } 2275 } 2276 2277 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2278 int callingUid) { 2279 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2280 if (nri != null) { 2281 handleReleaseNetworkRequest(nri.request, callingUid); 2282 } 2283 } 2284 2285 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2286 // This is whether it is satisfying any NetworkRequests or were it to become validated, 2287 // would it have a chance of satisfying any NetworkRequests. 2288 private boolean unneeded(NetworkAgentInfo nai) { 2289 if (!nai.created || nai.isVPN() || nai.lingering) return false; 2290 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2291 // If this Network is already the highest scoring Network for a request, or if 2292 // there is hope for it to become one if it validated, then it is needed. 2293 if (nri.isRequest() && nai.satisfies(nri.request) && 2294 (nai.networkRequests.get(nri.request.requestId) != null || 2295 // Note that this catches two important cases: 2296 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2297 // is currently satisfying the request. This is desirable when 2298 // cellular ends up validating but WiFi does not. 2299 // 2. Unvalidated WiFi will not be reaped when validated cellular 2300 // is currently satisfying the request. This is desirable when 2301 // WiFi ends up validating and out scoring cellular. 2302 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2303 nai.getCurrentScoreAsValidated())) { 2304 return false; 2305 } 2306 } 2307 return true; 2308 } 2309 2310 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2311 NetworkRequestInfo nri = mNetworkRequests.get(request); 2312 if (nri != null) { 2313 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2314 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2315 return; 2316 } 2317 if (VDBG || (DBG && nri.isRequest())) log("releasing NetworkRequest " + request); 2318 nri.unlinkDeathRecipient(); 2319 mNetworkRequests.remove(request); 2320 mNetworkRequestInfoLogs.log("RELEASE " + nri); 2321 if (nri.isRequest()) { 2322 // Find all networks that are satisfying this request and remove the request 2323 // from their request lists. 2324 // TODO - it's my understanding that for a request there is only a single 2325 // network satisfying it, so this loop is wasteful 2326 boolean wasKept = false; 2327 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2328 if (nai.networkRequests.get(nri.request.requestId) != null) { 2329 nai.networkRequests.remove(nri.request.requestId); 2330 if (VDBG) { 2331 log(" Removing from current network " + nai.name() + 2332 ", leaving " + nai.networkRequests.size() + 2333 " requests."); 2334 } 2335 if (unneeded(nai)) { 2336 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2337 teardownUnneededNetwork(nai); 2338 } else { 2339 // suspect there should only be one pass through here 2340 // but if any were kept do the check below 2341 wasKept |= true; 2342 } 2343 } 2344 } 2345 2346 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2347 if (nai != null) { 2348 mNetworkForRequestId.remove(nri.request.requestId); 2349 } 2350 // Maintain the illusion. When this request arrived, we might have pretended 2351 // that a network connected to serve it, even though the network was already 2352 // connected. Now that this request has gone away, we might have to pretend 2353 // that the network disconnected. LegacyTypeTracker will generate that 2354 // phantom disconnect for this type. 2355 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2356 boolean doRemove = true; 2357 if (wasKept) { 2358 // check if any of the remaining requests for this network are for the 2359 // same legacy type - if so, don't remove the nai 2360 for (int i = 0; i < nai.networkRequests.size(); i++) { 2361 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2362 if (otherRequest.legacyType == nri.request.legacyType && 2363 isRequest(otherRequest)) { 2364 if (DBG) log(" still have other legacy request - leaving"); 2365 doRemove = false; 2366 } 2367 } 2368 } 2369 2370 if (doRemove) { 2371 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2372 } 2373 } 2374 2375 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2376 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2377 nri.request); 2378 } 2379 } else { 2380 // listens don't have a singular affectedNetwork. Check all networks to see 2381 // if this listen request applies and remove it. 2382 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2383 nai.networkRequests.remove(nri.request.requestId); 2384 if (nri.request.networkCapabilities.hasSignalStrength() && 2385 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 2386 updateSignalStrengthThresholds(nai, "RELEASE", nri.request); 2387 } 2388 } 2389 } 2390 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2391 } 2392 } 2393 2394 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2395 enforceConnectivityInternalPermission(); 2396 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2397 accept ? 1 : 0, always ? 1: 0, network)); 2398 } 2399 2400 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2401 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2402 " accept=" + accept + " always=" + always); 2403 2404 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2405 if (nai == null) { 2406 // Nothing to do. 2407 return; 2408 } 2409 2410 if (nai.everValidated) { 2411 // The network validated while the dialog box was up. Take no action. 2412 return; 2413 } 2414 2415 if (!nai.networkMisc.explicitlySelected) { 2416 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2417 } 2418 2419 if (accept != nai.networkMisc.acceptUnvalidated) { 2420 int oldScore = nai.getCurrentScore(); 2421 nai.networkMisc.acceptUnvalidated = accept; 2422 rematchAllNetworksAndRequests(nai, oldScore); 2423 sendUpdatedScoreToFactories(nai); 2424 } 2425 2426 if (always) { 2427 nai.asyncChannel.sendMessage( 2428 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2429 } 2430 2431 if (!accept) { 2432 // Tell the NetworkAgent to not automatically reconnect to the network. 2433 nai.asyncChannel.sendMessage(NetworkAgent.CMD_PREVENT_AUTOMATIC_RECONNECT); 2434 // Teardown the nework. 2435 teardownUnneededNetwork(nai); 2436 } 2437 2438 } 2439 2440 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2441 if (VDBG) log("scheduleUnvalidatedPrompt " + nai.network); 2442 mHandler.sendMessageDelayed( 2443 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2444 PROMPT_UNVALIDATED_DELAY_MS); 2445 } 2446 2447 private void handlePromptUnvalidated(Network network) { 2448 if (VDBG) log("handlePromptUnvalidated " + network); 2449 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2450 2451 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2452 // we haven't already been told to switch to it regardless of whether it validated or not. 2453 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2454 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2455 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2456 return; 2457 } 2458 2459 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2460 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2461 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2462 intent.setClassName("com.android.settings", 2463 "com.android.settings.wifi.WifiNoInternetDialog"); 2464 2465 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2466 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2467 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2468 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent, true); 2469 } 2470 2471 private class InternalHandler extends Handler { 2472 public InternalHandler(Looper looper) { 2473 super(looper); 2474 } 2475 2476 @Override 2477 public void handleMessage(Message msg) { 2478 switch (msg.what) { 2479 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2480 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2481 String causedBy = null; 2482 synchronized (ConnectivityService.this) { 2483 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2484 mNetTransitionWakeLock.isHeld()) { 2485 mNetTransitionWakeLock.release(); 2486 causedBy = mNetTransitionWakeLockCausedBy; 2487 } else { 2488 break; 2489 } 2490 } 2491 if (VDBG) { 2492 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2493 log("Failed to find a new network - expiring NetTransition Wakelock"); 2494 } else { 2495 log("NetTransition Wakelock (" + 2496 (causedBy == null ? "unknown" : causedBy) + 2497 " cleared because we found a replacement network"); 2498 } 2499 } 2500 break; 2501 } 2502 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2503 handleDeprecatedGlobalHttpProxy(); 2504 break; 2505 } 2506 case EVENT_PROXY_HAS_CHANGED: { 2507 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2508 break; 2509 } 2510 case EVENT_REGISTER_NETWORK_FACTORY: { 2511 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2512 break; 2513 } 2514 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2515 handleUnregisterNetworkFactory((Messenger)msg.obj); 2516 break; 2517 } 2518 case EVENT_REGISTER_NETWORK_AGENT: { 2519 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2520 break; 2521 } 2522 case EVENT_REGISTER_NETWORK_REQUEST: 2523 case EVENT_REGISTER_NETWORK_LISTENER: { 2524 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2525 break; 2526 } 2527 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2528 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2529 handleRegisterNetworkRequestWithIntent(msg); 2530 break; 2531 } 2532 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2533 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2534 break; 2535 } 2536 case EVENT_RELEASE_NETWORK_REQUEST: { 2537 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2538 break; 2539 } 2540 case EVENT_SET_ACCEPT_UNVALIDATED: { 2541 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2542 break; 2543 } 2544 case EVENT_PROMPT_UNVALIDATED: { 2545 handlePromptUnvalidated((Network) msg.obj); 2546 break; 2547 } 2548 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2549 handleMobileDataAlwaysOn(); 2550 break; 2551 } 2552 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2553 case NetworkAgent.CMD_START_PACKET_KEEPALIVE: { 2554 mKeepaliveTracker.handleStartKeepalive(msg); 2555 break; 2556 } 2557 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2558 case NetworkAgent.CMD_STOP_PACKET_KEEPALIVE: { 2559 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork((Network) msg.obj); 2560 int slot = msg.arg1; 2561 int reason = msg.arg2; 2562 mKeepaliveTracker.handleStopKeepalive(nai, slot, reason); 2563 break; 2564 } 2565 case EVENT_SYSTEM_READY: { 2566 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2567 nai.networkMonitor.systemReady = true; 2568 } 2569 break; 2570 } 2571 } 2572 } 2573 } 2574 2575 // javadoc from interface 2576 public int tether(String iface) { 2577 ConnectivityManager.enforceTetherChangePermission(mContext); 2578 if (isTetheringSupported()) { 2579 return mTethering.tether(iface); 2580 } else { 2581 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2582 } 2583 } 2584 2585 // javadoc from interface 2586 public int untether(String iface) { 2587 ConnectivityManager.enforceTetherChangePermission(mContext); 2588 2589 if (isTetheringSupported()) { 2590 return mTethering.untether(iface); 2591 } else { 2592 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2593 } 2594 } 2595 2596 // javadoc from interface 2597 public int getLastTetherError(String iface) { 2598 enforceTetherAccessPermission(); 2599 2600 if (isTetheringSupported()) { 2601 return mTethering.getLastTetherError(iface); 2602 } else { 2603 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2604 } 2605 } 2606 2607 // TODO - proper iface API for selection by property, inspection, etc 2608 public String[] getTetherableUsbRegexs() { 2609 enforceTetherAccessPermission(); 2610 if (isTetheringSupported()) { 2611 return mTethering.getTetherableUsbRegexs(); 2612 } else { 2613 return new String[0]; 2614 } 2615 } 2616 2617 public String[] getTetherableWifiRegexs() { 2618 enforceTetherAccessPermission(); 2619 if (isTetheringSupported()) { 2620 return mTethering.getTetherableWifiRegexs(); 2621 } else { 2622 return new String[0]; 2623 } 2624 } 2625 2626 public String[] getTetherableBluetoothRegexs() { 2627 enforceTetherAccessPermission(); 2628 if (isTetheringSupported()) { 2629 return mTethering.getTetherableBluetoothRegexs(); 2630 } else { 2631 return new String[0]; 2632 } 2633 } 2634 2635 public int setUsbTethering(boolean enable) { 2636 ConnectivityManager.enforceTetherChangePermission(mContext); 2637 if (isTetheringSupported()) { 2638 return mTethering.setUsbTethering(enable); 2639 } else { 2640 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2641 } 2642 } 2643 2644 // TODO - move iface listing, queries, etc to new module 2645 // javadoc from interface 2646 public String[] getTetherableIfaces() { 2647 enforceTetherAccessPermission(); 2648 return mTethering.getTetherableIfaces(); 2649 } 2650 2651 public String[] getTetheredIfaces() { 2652 enforceTetherAccessPermission(); 2653 return mTethering.getTetheredIfaces(); 2654 } 2655 2656 public String[] getTetheringErroredIfaces() { 2657 enforceTetherAccessPermission(); 2658 return mTethering.getErroredIfaces(); 2659 } 2660 2661 public String[] getTetheredDhcpRanges() { 2662 enforceConnectivityInternalPermission(); 2663 return mTethering.getTetheredDhcpRanges(); 2664 } 2665 2666 // if ro.tether.denied = true we default to no tethering 2667 // gservices could set the secure setting to 1 though to enable it on a build where it 2668 // had previously been turned off. 2669 @Override 2670 public boolean isTetheringSupported() { 2671 enforceTetherAccessPermission(); 2672 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2673 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2674 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2675 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2676 return tetherEnabledInSettings && mUserManager.isAdminUser() && 2677 ((mTethering.getTetherableUsbRegexs().length != 0 || 2678 mTethering.getTetherableWifiRegexs().length != 0 || 2679 mTethering.getTetherableBluetoothRegexs().length != 0) && 2680 mTethering.getUpstreamIfaceTypes().length != 0); 2681 } 2682 2683 @Override 2684 public void startTethering(int type, ResultReceiver receiver, 2685 boolean showProvisioningUi) { 2686 ConnectivityManager.enforceTetherChangePermission(mContext); 2687 if (!isTetheringSupported()) { 2688 receiver.send(ConnectivityManager.TETHER_ERROR_UNSUPPORTED, null); 2689 return; 2690 } 2691 mTethering.startTethering(type, receiver, showProvisioningUi); 2692 } 2693 2694 @Override 2695 public void stopTethering(int type) { 2696 ConnectivityManager.enforceTetherChangePermission(mContext); 2697 mTethering.stopTethering(type); 2698 } 2699 2700 // Called when we lose the default network and have no replacement yet. 2701 // This will automatically be cleared after X seconds or a new default network 2702 // becomes CONNECTED, whichever happens first. The timer is started by the 2703 // first caller and not restarted by subsequent callers. 2704 private void requestNetworkTransitionWakelock(String forWhom) { 2705 int serialNum = 0; 2706 synchronized (this) { 2707 if (mNetTransitionWakeLock.isHeld()) return; 2708 serialNum = ++mNetTransitionWakeLockSerialNumber; 2709 mNetTransitionWakeLock.acquire(); 2710 mNetTransitionWakeLockCausedBy = forWhom; 2711 } 2712 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2713 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2714 mNetTransitionWakeLockTimeout); 2715 return; 2716 } 2717 2718 // 100 percent is full good, 0 is full bad. 2719 public void reportInetCondition(int networkType, int percentage) { 2720 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2721 if (nai == null) return; 2722 reportNetworkConnectivity(nai.network, percentage > 50); 2723 } 2724 2725 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2726 enforceAccessPermission(); 2727 enforceInternetPermission(); 2728 2729 NetworkAgentInfo nai; 2730 if (network == null) { 2731 nai = getDefaultNetwork(); 2732 } else { 2733 nai = getNetworkAgentInfoForNetwork(network); 2734 } 2735 if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || 2736 nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { 2737 return; 2738 } 2739 // Revalidate if the app report does not match our current validated state. 2740 if (hasConnectivity == nai.lastValidated) return; 2741 final int uid = Binder.getCallingUid(); 2742 if (DBG) { 2743 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2744 ") by " + uid); 2745 } 2746 synchronized (nai) { 2747 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2748 // which isn't meant to work on uncreated networks. 2749 if (!nai.created) return; 2750 2751 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2752 2753 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2754 } 2755 } 2756 2757 private ProxyInfo getDefaultProxy() { 2758 // this information is already available as a world read/writable jvm property 2759 // so this API change wouldn't have a benifit. It also breaks the passing 2760 // of proxy info to all the JVMs. 2761 // enforceAccessPermission(); 2762 synchronized (mProxyLock) { 2763 ProxyInfo ret = mGlobalProxy; 2764 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2765 return ret; 2766 } 2767 } 2768 2769 public ProxyInfo getProxyForNetwork(Network network) { 2770 if (network == null) return getDefaultProxy(); 2771 final ProxyInfo globalProxy = getGlobalProxy(); 2772 if (globalProxy != null) return globalProxy; 2773 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2774 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2775 // caller may not have. 2776 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2777 if (nai == null) return null; 2778 synchronized (nai) { 2779 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2780 if (proxyInfo == null) return null; 2781 return new ProxyInfo(proxyInfo); 2782 } 2783 } 2784 2785 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2786 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2787 // proxy is null then there is no proxy in place). 2788 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2789 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2790 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2791 proxy = null; 2792 } 2793 return proxy; 2794 } 2795 2796 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2797 // better for determining if a new proxy broadcast is necessary: 2798 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2799 // avoid unnecessary broadcasts. 2800 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2801 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2802 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2803 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2804 // all set. 2805 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2806 a = canonicalizeProxyInfo(a); 2807 b = canonicalizeProxyInfo(b); 2808 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2809 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2810 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2811 } 2812 2813 public void setGlobalProxy(ProxyInfo proxyProperties) { 2814 enforceConnectivityInternalPermission(); 2815 2816 synchronized (mProxyLock) { 2817 if (proxyProperties == mGlobalProxy) return; 2818 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2819 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2820 2821 String host = ""; 2822 int port = 0; 2823 String exclList = ""; 2824 String pacFileUrl = ""; 2825 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2826 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2827 if (!proxyProperties.isValid()) { 2828 if (DBG) 2829 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2830 return; 2831 } 2832 mGlobalProxy = new ProxyInfo(proxyProperties); 2833 host = mGlobalProxy.getHost(); 2834 port = mGlobalProxy.getPort(); 2835 exclList = mGlobalProxy.getExclusionListAsString(); 2836 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2837 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2838 } 2839 } else { 2840 mGlobalProxy = null; 2841 } 2842 ContentResolver res = mContext.getContentResolver(); 2843 final long token = Binder.clearCallingIdentity(); 2844 try { 2845 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2846 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2847 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2848 exclList); 2849 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2850 } finally { 2851 Binder.restoreCallingIdentity(token); 2852 } 2853 2854 if (mGlobalProxy == null) { 2855 proxyProperties = mDefaultProxy; 2856 } 2857 sendProxyBroadcast(proxyProperties); 2858 } 2859 } 2860 2861 private void loadGlobalProxy() { 2862 ContentResolver res = mContext.getContentResolver(); 2863 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2864 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2865 String exclList = Settings.Global.getString(res, 2866 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2867 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2868 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2869 ProxyInfo proxyProperties; 2870 if (!TextUtils.isEmpty(pacFileUrl)) { 2871 proxyProperties = new ProxyInfo(pacFileUrl); 2872 } else { 2873 proxyProperties = new ProxyInfo(host, port, exclList); 2874 } 2875 if (!proxyProperties.isValid()) { 2876 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2877 return; 2878 } 2879 2880 synchronized (mProxyLock) { 2881 mGlobalProxy = proxyProperties; 2882 } 2883 } 2884 } 2885 2886 public ProxyInfo getGlobalProxy() { 2887 // this information is already available as a world read/writable jvm property 2888 // so this API change wouldn't have a benifit. It also breaks the passing 2889 // of proxy info to all the JVMs. 2890 // enforceAccessPermission(); 2891 synchronized (mProxyLock) { 2892 return mGlobalProxy; 2893 } 2894 } 2895 2896 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2897 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2898 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2899 proxy = null; 2900 } 2901 synchronized (mProxyLock) { 2902 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2903 if (mDefaultProxy == proxy) return; // catches repeated nulls 2904 if (proxy != null && !proxy.isValid()) { 2905 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2906 return; 2907 } 2908 2909 // This call could be coming from the PacManager, containing the port of the local 2910 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2911 // global (to get the correct local port), and send a broadcast. 2912 // TODO: Switch PacManager to have its own message to send back rather than 2913 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2914 if ((mGlobalProxy != null) && (proxy != null) 2915 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2916 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2917 mGlobalProxy = proxy; 2918 sendProxyBroadcast(mGlobalProxy); 2919 return; 2920 } 2921 mDefaultProxy = proxy; 2922 2923 if (mGlobalProxy != null) return; 2924 if (!mDefaultProxyDisabled) { 2925 sendProxyBroadcast(proxy); 2926 } 2927 } 2928 } 2929 2930 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2931 // This method gets called when any network changes proxy, but the broadcast only ever contains 2932 // the default proxy (even if it hasn't changed). 2933 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2934 // world where an app might be bound to a non-default network. 2935 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2936 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2937 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2938 2939 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2940 sendProxyBroadcast(getDefaultProxy()); 2941 } 2942 } 2943 2944 private void handleDeprecatedGlobalHttpProxy() { 2945 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2946 Settings.Global.HTTP_PROXY); 2947 if (!TextUtils.isEmpty(proxy)) { 2948 String data[] = proxy.split(":"); 2949 if (data.length == 0) { 2950 return; 2951 } 2952 2953 String proxyHost = data[0]; 2954 int proxyPort = 8080; 2955 if (data.length > 1) { 2956 try { 2957 proxyPort = Integer.parseInt(data[1]); 2958 } catch (NumberFormatException e) { 2959 return; 2960 } 2961 } 2962 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2963 setGlobalProxy(p); 2964 } 2965 } 2966 2967 private void sendProxyBroadcast(ProxyInfo proxy) { 2968 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2969 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2970 if (DBG) log("sending Proxy Broadcast for " + proxy); 2971 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2972 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2973 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2974 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2975 final long ident = Binder.clearCallingIdentity(); 2976 try { 2977 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2978 } finally { 2979 Binder.restoreCallingIdentity(ident); 2980 } 2981 } 2982 2983 private static class SettingsObserver extends ContentObserver { 2984 final private HashMap<Uri, Integer> mUriEventMap; 2985 final private Context mContext; 2986 final private Handler mHandler; 2987 2988 SettingsObserver(Context context, Handler handler) { 2989 super(null); 2990 mUriEventMap = new HashMap<Uri, Integer>(); 2991 mContext = context; 2992 mHandler = handler; 2993 } 2994 2995 void observe(Uri uri, int what) { 2996 mUriEventMap.put(uri, what); 2997 final ContentResolver resolver = mContext.getContentResolver(); 2998 resolver.registerContentObserver(uri, false, this); 2999 } 3000 3001 @Override 3002 public void onChange(boolean selfChange) { 3003 Slog.wtf(TAG, "Should never be reached."); 3004 } 3005 3006 @Override 3007 public void onChange(boolean selfChange, Uri uri) { 3008 final Integer what = mUriEventMap.get(uri); 3009 if (what != null) { 3010 mHandler.obtainMessage(what.intValue()).sendToTarget(); 3011 } else { 3012 loge("No matching event to send for URI=" + uri); 3013 } 3014 } 3015 } 3016 3017 private static void log(String s) { 3018 Slog.d(TAG, s); 3019 } 3020 3021 private static void loge(String s) { 3022 Slog.e(TAG, s); 3023 } 3024 3025 private static <T> T checkNotNull(T value, String message) { 3026 if (value == null) { 3027 throw new NullPointerException(message); 3028 } 3029 return value; 3030 } 3031 3032 /** 3033 * Prepare for a VPN application. 3034 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3035 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3036 * 3037 * @param oldPackage Package name of the application which currently controls VPN, which will 3038 * be replaced. If there is no such application, this should should either be 3039 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3040 * @param newPackage Package name of the application which should gain control of VPN, or 3041 * {@code null} to disable. 3042 * @param userId User for whom to prepare the new VPN. 3043 * 3044 * @hide 3045 */ 3046 @Override 3047 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3048 int userId) { 3049 enforceCrossUserPermission(userId); 3050 throwIfLockdownEnabled(); 3051 3052 synchronized(mVpns) { 3053 Vpn vpn = mVpns.get(userId); 3054 if (vpn != null) { 3055 return vpn.prepare(oldPackage, newPackage); 3056 } else { 3057 return false; 3058 } 3059 } 3060 } 3061 3062 /** 3063 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3064 * This method is used by system-privileged apps. 3065 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3066 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3067 * 3068 * @param packageName The package for which authorization state should change. 3069 * @param userId User for whom {@code packageName} is installed. 3070 * @param authorized {@code true} if this app should be able to start a VPN connection without 3071 * explicit user approval, {@code false} if not. 3072 * 3073 * @hide 3074 */ 3075 @Override 3076 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3077 enforceCrossUserPermission(userId); 3078 3079 synchronized(mVpns) { 3080 Vpn vpn = mVpns.get(userId); 3081 if (vpn != null) { 3082 vpn.setPackageAuthorization(packageName, authorized); 3083 } 3084 } 3085 } 3086 3087 /** 3088 * Configure a TUN interface and return its file descriptor. Parameters 3089 * are encoded and opaque to this class. This method is used by VpnBuilder 3090 * and not available in ConnectivityManager. Permissions are checked in 3091 * Vpn class. 3092 * @hide 3093 */ 3094 @Override 3095 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3096 throwIfLockdownEnabled(); 3097 int user = UserHandle.getUserId(Binder.getCallingUid()); 3098 synchronized(mVpns) { 3099 return mVpns.get(user).establish(config); 3100 } 3101 } 3102 3103 /** 3104 * Start legacy VPN, controlling native daemons as needed. Creates a 3105 * secondary thread to perform connection work, returning quickly. 3106 */ 3107 @Override 3108 public void startLegacyVpn(VpnProfile profile) { 3109 throwIfLockdownEnabled(); 3110 final LinkProperties egress = getActiveLinkProperties(); 3111 if (egress == null) { 3112 throw new IllegalStateException("Missing active network connection"); 3113 } 3114 int user = UserHandle.getUserId(Binder.getCallingUid()); 3115 synchronized(mVpns) { 3116 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3117 } 3118 } 3119 3120 /** 3121 * Return the information of the ongoing legacy VPN. This method is used 3122 * by VpnSettings and not available in ConnectivityManager. Permissions 3123 * are checked in Vpn class. 3124 */ 3125 @Override 3126 public LegacyVpnInfo getLegacyVpnInfo(int userId) { 3127 enforceCrossUserPermission(userId); 3128 if (mLockdownEnabled) { 3129 return null; 3130 } 3131 3132 synchronized(mVpns) { 3133 return mVpns.get(userId).getLegacyVpnInfo(); 3134 } 3135 } 3136 3137 /** 3138 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3139 * and not available in ConnectivityManager. 3140 */ 3141 @Override 3142 public VpnInfo[] getAllVpnInfo() { 3143 enforceConnectivityInternalPermission(); 3144 if (mLockdownEnabled) { 3145 return new VpnInfo[0]; 3146 } 3147 3148 synchronized(mVpns) { 3149 List<VpnInfo> infoList = new ArrayList<>(); 3150 for (int i = 0; i < mVpns.size(); i++) { 3151 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3152 if (info != null) { 3153 infoList.add(info); 3154 } 3155 } 3156 return infoList.toArray(new VpnInfo[infoList.size()]); 3157 } 3158 } 3159 3160 /** 3161 * @return VPN information for accounting, or null if we can't retrieve all required 3162 * information, e.g primary underlying iface. 3163 */ 3164 @Nullable 3165 private VpnInfo createVpnInfo(Vpn vpn) { 3166 VpnInfo info = vpn.getVpnInfo(); 3167 if (info == null) { 3168 return null; 3169 } 3170 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3171 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3172 // the underlyingNetworks list. 3173 if (underlyingNetworks == null) { 3174 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3175 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3176 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3177 } 3178 } else if (underlyingNetworks.length > 0) { 3179 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3180 if (linkProperties != null) { 3181 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3182 } 3183 } 3184 return info.primaryUnderlyingIface == null ? null : info; 3185 } 3186 3187 /** 3188 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3189 * VpnDialogs and not available in ConnectivityManager. 3190 * Permissions are checked in Vpn class. 3191 * @hide 3192 */ 3193 @Override 3194 public VpnConfig getVpnConfig(int userId) { 3195 enforceCrossUserPermission(userId); 3196 synchronized(mVpns) { 3197 Vpn vpn = mVpns.get(userId); 3198 if (vpn != null) { 3199 return vpn.getVpnConfig(); 3200 } else { 3201 return null; 3202 } 3203 } 3204 } 3205 3206 @Override 3207 public boolean updateLockdownVpn() { 3208 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3209 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3210 return false; 3211 } 3212 3213 // Tear down existing lockdown if profile was removed 3214 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3215 if (mLockdownEnabled) { 3216 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3217 final VpnProfile profile = VpnProfile.decode( 3218 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3219 if (profile == null) { 3220 Slog.e(TAG, "Lockdown VPN configured invalid profile " + profileName); 3221 setLockdownTracker(null); 3222 return true; 3223 } 3224 int user = UserHandle.getUserId(Binder.getCallingUid()); 3225 synchronized(mVpns) { 3226 Vpn vpn = mVpns.get(user); 3227 if (vpn == null) { 3228 Slog.w(TAG, "VPN for user " + user + " not ready yet. Skipping lockdown"); 3229 return false; 3230 } 3231 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, vpn, profile)); 3232 } 3233 } else { 3234 setLockdownTracker(null); 3235 } 3236 3237 return true; 3238 } 3239 3240 /** 3241 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3242 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3243 */ 3244 private void setLockdownTracker(LockdownVpnTracker tracker) { 3245 // Shutdown any existing tracker 3246 final LockdownVpnTracker existing = mLockdownTracker; 3247 mLockdownTracker = null; 3248 if (existing != null) { 3249 existing.shutdown(); 3250 } 3251 3252 try { 3253 if (tracker != null) { 3254 mNetd.setFirewallEnabled(true); 3255 mNetd.setFirewallInterfaceRule("lo", true); 3256 mLockdownTracker = tracker; 3257 mLockdownTracker.init(); 3258 } else { 3259 mNetd.setFirewallEnabled(false); 3260 } 3261 } catch (RemoteException e) { 3262 // ignored; NMS lives inside system_server 3263 } 3264 } 3265 3266 private void throwIfLockdownEnabled() { 3267 if (mLockdownEnabled) { 3268 throw new IllegalStateException("Unavailable in lockdown mode"); 3269 } 3270 } 3271 3272 /** 3273 * Sets up or tears down the always-on VPN for user {@param user} as appropriate. 3274 * 3275 * @return {@code false} in case of errors; {@code true} otherwise. 3276 */ 3277 private boolean updateAlwaysOnVpn(int user) { 3278 final String lockdownPackage = getAlwaysOnVpnPackage(user); 3279 if (lockdownPackage == null) { 3280 return true; 3281 } 3282 3283 // Create an intent to start the VPN service declared in the app's manifest. 3284 Intent serviceIntent = new Intent(VpnConfig.SERVICE_INTERFACE); 3285 serviceIntent.setPackage(lockdownPackage); 3286 3287 try { 3288 return mContext.startServiceAsUser(serviceIntent, UserHandle.of(user)) != null; 3289 } catch (RuntimeException e) { 3290 return false; 3291 } 3292 } 3293 3294 @Override 3295 public boolean setAlwaysOnVpnPackage(int userId, String packageName) { 3296 enforceConnectivityInternalPermission(); 3297 enforceCrossUserPermission(userId); 3298 3299 // Can't set always-on VPN if legacy VPN is already in lockdown mode. 3300 if (LockdownVpnTracker.isEnabled()) { 3301 return false; 3302 } 3303 3304 // If the current VPN package is the same as the new one, this is a no-op 3305 final String oldPackage = getAlwaysOnVpnPackage(userId); 3306 if (TextUtils.equals(oldPackage, packageName)) { 3307 return true; 3308 } 3309 3310 synchronized (mVpns) { 3311 Vpn vpn = mVpns.get(userId); 3312 if (vpn == null) { 3313 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3314 return false; 3315 } 3316 if (!vpn.setAlwaysOnPackage(packageName)) { 3317 return false; 3318 } 3319 if (!updateAlwaysOnVpn(userId)) { 3320 vpn.setAlwaysOnPackage(null); 3321 return false; 3322 } 3323 } 3324 return true; 3325 } 3326 3327 @Override 3328 public String getAlwaysOnVpnPackage(int userId) { 3329 enforceConnectivityInternalPermission(); 3330 enforceCrossUserPermission(userId); 3331 3332 synchronized (mVpns) { 3333 Vpn vpn = mVpns.get(userId); 3334 if (vpn == null) { 3335 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3336 return null; 3337 } 3338 return vpn.getAlwaysOnPackage(); 3339 } 3340 } 3341 3342 @Override 3343 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3344 // TODO: Remove? Any reason to trigger a provisioning check? 3345 return -1; 3346 } 3347 3348 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3349 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3350 3351 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3352 Intent intent = new Intent(action); 3353 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3354 // Concatenate the range of types onto the range of NetIDs. 3355 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3356 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3357 networkType, null, pendingIntent, false); 3358 } 3359 3360 /** 3361 * Show or hide network provisioning notifications. 3362 * 3363 * We use notifications for two purposes: to notify that a network requires sign in 3364 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3365 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3366 * particular network we can display the notification type that was most recently requested. 3367 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3368 * might first display NO_INTERNET, and then when the captive portal check completes, display 3369 * SIGN_IN. 3370 * 3371 * @param id an identifier that uniquely identifies this notification. This must match 3372 * between show and hide calls. We use the NetID value but for legacy callers 3373 * we concatenate the range of types with the range of NetIDs. 3374 */ 3375 private void setProvNotificationVisibleIntent(boolean visible, int id, 3376 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent, 3377 boolean highPriority) { 3378 if (VDBG || (DBG && visible)) { 3379 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3380 + " networkType=" + getNetworkTypeName(networkType) 3381 + " extraInfo=" + extraInfo + " highPriority=" + highPriority); 3382 } 3383 3384 Resources r = Resources.getSystem(); 3385 NotificationManager notificationManager = (NotificationManager) mContext 3386 .getSystemService(Context.NOTIFICATION_SERVICE); 3387 3388 if (visible) { 3389 CharSequence title; 3390 CharSequence details; 3391 int icon; 3392 if (notifyType == NotificationType.NO_INTERNET && 3393 networkType == ConnectivityManager.TYPE_WIFI) { 3394 title = r.getString(R.string.wifi_no_internet, 0); 3395 details = r.getString(R.string.wifi_no_internet_detailed); 3396 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3397 } else if (notifyType == NotificationType.SIGN_IN) { 3398 switch (networkType) { 3399 case ConnectivityManager.TYPE_WIFI: 3400 title = r.getString(R.string.wifi_available_sign_in, 0); 3401 details = r.getString(R.string.network_available_sign_in_detailed, 3402 extraInfo); 3403 icon = R.drawable.stat_notify_wifi_in_range; 3404 break; 3405 case ConnectivityManager.TYPE_MOBILE: 3406 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3407 title = r.getString(R.string.network_available_sign_in, 0); 3408 // TODO: Change this to pull from NetworkInfo once a printable 3409 // name has been added to it 3410 details = mTelephonyManager.getNetworkOperatorName(); 3411 icon = R.drawable.stat_notify_rssi_in_range; 3412 break; 3413 default: 3414 title = r.getString(R.string.network_available_sign_in, 0); 3415 details = r.getString(R.string.network_available_sign_in_detailed, 3416 extraInfo); 3417 icon = R.drawable.stat_notify_rssi_in_range; 3418 break; 3419 } 3420 } else { 3421 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3422 + getNetworkTypeName(networkType)); 3423 return; 3424 } 3425 3426 Notification notification = new Notification.Builder(mContext) 3427 .setWhen(0) 3428 .setSmallIcon(icon) 3429 .setAutoCancel(true) 3430 .setTicker(title) 3431 .setColor(mContext.getColor( 3432 com.android.internal.R.color.system_notification_accent_color)) 3433 .setContentTitle(title) 3434 .setContentText(details) 3435 .setContentIntent(intent) 3436 .setLocalOnly(true) 3437 .setPriority(highPriority ? 3438 Notification.PRIORITY_HIGH : 3439 Notification.PRIORITY_DEFAULT) 3440 .setDefaults(highPriority ? Notification.DEFAULT_ALL : 0) 3441 .setOnlyAlertOnce(true) 3442 .build(); 3443 3444 try { 3445 notificationManager.notify(NOTIFICATION_ID, id, notification); 3446 } catch (NullPointerException npe) { 3447 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3448 npe.printStackTrace(); 3449 } 3450 } else { 3451 try { 3452 notificationManager.cancel(NOTIFICATION_ID, id); 3453 } catch (NullPointerException npe) { 3454 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3455 npe.printStackTrace(); 3456 } 3457 } 3458 } 3459 3460 /** Location to an updatable file listing carrier provisioning urls. 3461 * An example: 3462 * 3463 * <?xml version="1.0" encoding="utf-8"?> 3464 * <provisioningUrls> 3465 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3466 * </provisioningUrls> 3467 */ 3468 private static final String PROVISIONING_URL_PATH = 3469 "/data/misc/radio/provisioning_urls.xml"; 3470 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3471 3472 /** XML tag for root element. */ 3473 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3474 /** XML tag for individual url */ 3475 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3476 /** XML attribute for mcc */ 3477 private static final String ATTR_MCC = "mcc"; 3478 /** XML attribute for mnc */ 3479 private static final String ATTR_MNC = "mnc"; 3480 3481 private String getProvisioningUrlBaseFromFile() { 3482 FileReader fileReader = null; 3483 XmlPullParser parser = null; 3484 Configuration config = mContext.getResources().getConfiguration(); 3485 3486 try { 3487 fileReader = new FileReader(mProvisioningUrlFile); 3488 parser = Xml.newPullParser(); 3489 parser.setInput(fileReader); 3490 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3491 3492 while (true) { 3493 XmlUtils.nextElement(parser); 3494 3495 String element = parser.getName(); 3496 if (element == null) break; 3497 3498 if (element.equals(TAG_PROVISIONING_URL)) { 3499 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3500 try { 3501 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3502 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3503 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3504 parser.next(); 3505 if (parser.getEventType() == XmlPullParser.TEXT) { 3506 return parser.getText(); 3507 } 3508 } 3509 } 3510 } catch (NumberFormatException e) { 3511 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3512 } 3513 } 3514 } 3515 return null; 3516 } catch (FileNotFoundException e) { 3517 loge("Carrier Provisioning Urls file not found"); 3518 } catch (XmlPullParserException e) { 3519 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3520 } catch (IOException e) { 3521 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3522 } finally { 3523 if (fileReader != null) { 3524 try { 3525 fileReader.close(); 3526 } catch (IOException e) {} 3527 } 3528 } 3529 return null; 3530 } 3531 3532 @Override 3533 public String getMobileProvisioningUrl() { 3534 enforceConnectivityInternalPermission(); 3535 String url = getProvisioningUrlBaseFromFile(); 3536 if (TextUtils.isEmpty(url)) { 3537 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3538 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3539 } else { 3540 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3541 } 3542 // populate the iccid, imei and phone number in the provisioning url. 3543 if (!TextUtils.isEmpty(url)) { 3544 String phoneNumber = mTelephonyManager.getLine1Number(); 3545 if (TextUtils.isEmpty(phoneNumber)) { 3546 phoneNumber = "0000000000"; 3547 } 3548 url = String.format(url, 3549 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3550 mTelephonyManager.getDeviceId() /* IMEI */, 3551 phoneNumber /* Phone numer */); 3552 } 3553 3554 return url; 3555 } 3556 3557 @Override 3558 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3559 String action) { 3560 enforceConnectivityInternalPermission(); 3561 final long ident = Binder.clearCallingIdentity(); 3562 try { 3563 setProvNotificationVisible(visible, networkType, action); 3564 } finally { 3565 Binder.restoreCallingIdentity(ident); 3566 } 3567 } 3568 3569 @Override 3570 public void setAirplaneMode(boolean enable) { 3571 enforceConnectivityInternalPermission(); 3572 final long ident = Binder.clearCallingIdentity(); 3573 try { 3574 final ContentResolver cr = mContext.getContentResolver(); 3575 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3576 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3577 intent.putExtra("state", enable); 3578 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3579 } finally { 3580 Binder.restoreCallingIdentity(ident); 3581 } 3582 } 3583 3584 private void onUserStart(int userId) { 3585 synchronized(mVpns) { 3586 Vpn userVpn = mVpns.get(userId); 3587 if (userVpn != null) { 3588 loge("Starting user already has a VPN"); 3589 return; 3590 } 3591 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3592 mVpns.put(userId, userVpn); 3593 } 3594 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3595 updateLockdownVpn(); 3596 } else { 3597 updateAlwaysOnVpn(userId); 3598 } 3599 } 3600 3601 private void onUserStop(int userId) { 3602 synchronized(mVpns) { 3603 Vpn userVpn = mVpns.get(userId); 3604 if (userVpn == null) { 3605 loge("Stopping user has no VPN"); 3606 return; 3607 } 3608 mVpns.delete(userId); 3609 } 3610 } 3611 3612 private void onUserAdded(int userId) { 3613 synchronized(mVpns) { 3614 final int vpnsSize = mVpns.size(); 3615 for (int i = 0; i < vpnsSize; i++) { 3616 Vpn vpn = mVpns.valueAt(i); 3617 vpn.onUserAdded(userId); 3618 } 3619 } 3620 } 3621 3622 private void onUserRemoved(int userId) { 3623 synchronized(mVpns) { 3624 final int vpnsSize = mVpns.size(); 3625 for (int i = 0; i < vpnsSize; i++) { 3626 Vpn vpn = mVpns.valueAt(i); 3627 vpn.onUserRemoved(userId); 3628 } 3629 } 3630 } 3631 3632 private void onUserUnlocked(int userId) { 3633 // User present may be sent because of an unlock, which might mean an unlocked keystore. 3634 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3635 updateLockdownVpn(); 3636 } else { 3637 updateAlwaysOnVpn(userId); 3638 } 3639 } 3640 3641 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3642 @Override 3643 public void onReceive(Context context, Intent intent) { 3644 final String action = intent.getAction(); 3645 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3646 if (userId == UserHandle.USER_NULL) return; 3647 3648 if (Intent.ACTION_USER_STARTING.equals(action)) { 3649 onUserStart(userId); 3650 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3651 onUserStop(userId); 3652 } else if (Intent.ACTION_USER_ADDED.equals(action)) { 3653 onUserAdded(userId); 3654 } else if (Intent.ACTION_USER_REMOVED.equals(action)) { 3655 onUserRemoved(userId); 3656 } else if (Intent.ACTION_USER_UNLOCKED.equals(action)) { 3657 onUserUnlocked(userId); 3658 } 3659 } 3660 }; 3661 3662 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3663 new HashMap<Messenger, NetworkFactoryInfo>(); 3664 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3665 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3666 3667 private static class NetworkFactoryInfo { 3668 public final String name; 3669 public final Messenger messenger; 3670 public final AsyncChannel asyncChannel; 3671 3672 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3673 this.name = name; 3674 this.messenger = messenger; 3675 this.asyncChannel = asyncChannel; 3676 } 3677 } 3678 3679 /** 3680 * A NetworkRequest as registered by an application can be one of three 3681 * types: 3682 * 3683 * - "listen", for which the framework will issue callbacks about any 3684 * and all networks that match the specified NetworkCapabilities, 3685 * 3686 * - "request", capable of causing a specific network to be created 3687 * first (e.g. a telephony DUN request), the framework will issue 3688 * callbacks about the single, highest scoring current network 3689 * (if any) that matches the specified NetworkCapabilities, or 3690 * 3691 * - "track the default network", a hybrid of the two designed such 3692 * that the framework will issue callbacks for the single, highest 3693 * scoring current network (if any) that matches the capabilities of 3694 * the default Internet request (mDefaultRequest), but which cannot 3695 * cause the framework to either create or retain the existence of 3696 * any specific network. 3697 * 3698 */ 3699 private static enum NetworkRequestType { 3700 LISTEN, 3701 TRACK_DEFAULT, 3702 REQUEST 3703 }; 3704 3705 /** 3706 * Tracks info about the requester. 3707 * Also used to notice when the calling process dies so we can self-expire 3708 */ 3709 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3710 final NetworkRequest request; 3711 final PendingIntent mPendingIntent; 3712 boolean mPendingIntentSent; 3713 private final IBinder mBinder; 3714 final int mPid; 3715 final int mUid; 3716 final Messenger messenger; 3717 private final NetworkRequestType mType; 3718 3719 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, NetworkRequestType type) { 3720 request = r; 3721 mPendingIntent = pi; 3722 messenger = null; 3723 mBinder = null; 3724 mPid = getCallingPid(); 3725 mUid = getCallingUid(); 3726 mType = type; 3727 } 3728 3729 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, NetworkRequestType type) { 3730 super(); 3731 messenger = m; 3732 request = r; 3733 mBinder = binder; 3734 mPid = getCallingPid(); 3735 mUid = getCallingUid(); 3736 mType = type; 3737 mPendingIntent = null; 3738 3739 try { 3740 mBinder.linkToDeath(this, 0); 3741 } catch (RemoteException e) { 3742 binderDied(); 3743 } 3744 } 3745 3746 private String typeString() { 3747 switch (mType) { 3748 case LISTEN: return "Listen"; 3749 case REQUEST: return "Request"; 3750 case TRACK_DEFAULT: return "Track default"; 3751 default: 3752 return "unknown type"; 3753 } 3754 } 3755 3756 void unlinkDeathRecipient() { 3757 if (mBinder != null) { 3758 mBinder.unlinkToDeath(this, 0); 3759 } 3760 } 3761 3762 public void binderDied() { 3763 log("ConnectivityService NetworkRequestInfo binderDied(" + 3764 request + ", " + mBinder + ")"); 3765 releaseNetworkRequest(request); 3766 } 3767 3768 /** 3769 * Returns true iff. the contained NetworkRequest is one that: 3770 * 3771 * - should be associated with at most one satisfying network 3772 * at a time; 3773 * 3774 * - should cause a network to be kept up if it is the only network 3775 * which can satisfy the NetworkReqeust. 3776 * 3777 * For full detail of how isRequest() is used for pairing Networks with 3778 * NetworkRequests read rematchNetworkAndRequests(). 3779 * 3780 * TODO: Rename to something more properly descriptive. 3781 */ 3782 public boolean isRequest() { 3783 return (mType == NetworkRequestType.TRACK_DEFAULT) || 3784 (mType == NetworkRequestType.REQUEST); 3785 } 3786 3787 public String toString() { 3788 return typeString() + 3789 " from uid/pid:" + mUid + "/" + mPid + 3790 " for " + request + 3791 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3792 } 3793 } 3794 3795 private void ensureRequestableCapabilities(NetworkCapabilities networkCapabilities) { 3796 final String badCapability = networkCapabilities.describeFirstNonRequestableCapability(); 3797 if (badCapability != null) { 3798 throw new IllegalArgumentException("Cannot request network with " + badCapability); 3799 } 3800 } 3801 3802 private ArrayList<Integer> getSignalStrengthThresholds(NetworkAgentInfo nai) { 3803 final SortedSet<Integer> thresholds = new TreeSet(); 3804 synchronized (nai) { 3805 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3806 if (nri.request.networkCapabilities.hasSignalStrength() && 3807 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 3808 thresholds.add(nri.request.networkCapabilities.getSignalStrength()); 3809 } 3810 } 3811 } 3812 return new ArrayList<Integer>(thresholds); 3813 } 3814 3815 private void updateSignalStrengthThresholds( 3816 NetworkAgentInfo nai, String reason, NetworkRequest request) { 3817 ArrayList<Integer> thresholdsArray = getSignalStrengthThresholds(nai); 3818 Bundle thresholds = new Bundle(); 3819 thresholds.putIntegerArrayList("thresholds", thresholdsArray); 3820 3821 if (VDBG || (DBG && !"CONNECT".equals(reason))) { 3822 String detail; 3823 if (request != null && request.networkCapabilities.hasSignalStrength()) { 3824 detail = reason + " " + request.networkCapabilities.getSignalStrength(); 3825 } else { 3826 detail = reason; 3827 } 3828 log(String.format("updateSignalStrengthThresholds: %s, sending %s to %s", 3829 detail, Arrays.toString(thresholdsArray.toArray()), nai.name())); 3830 } 3831 3832 nai.asyncChannel.sendMessage( 3833 android.net.NetworkAgent.CMD_SET_SIGNAL_STRENGTH_THRESHOLDS, 3834 0, 0, thresholds); 3835 } 3836 3837 @Override 3838 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3839 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3840 final NetworkRequestType type = (networkCapabilities == null) 3841 ? NetworkRequestType.TRACK_DEFAULT 3842 : NetworkRequestType.REQUEST; 3843 // If the requested networkCapabilities is null, take them instead from 3844 // the default network request. This allows callers to keep track of 3845 // the system default network. 3846 if (type == NetworkRequestType.TRACK_DEFAULT) { 3847 networkCapabilities = new NetworkCapabilities(mDefaultRequest.networkCapabilities); 3848 enforceAccessPermission(); 3849 } else { 3850 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3851 enforceNetworkRequestPermissions(networkCapabilities); 3852 } 3853 enforceMeteredApnPolicy(networkCapabilities); 3854 ensureRequestableCapabilities(networkCapabilities); 3855 3856 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3857 throw new IllegalArgumentException("Bad timeout specified"); 3858 } 3859 3860 if (NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER 3861 .equals(networkCapabilities.getNetworkSpecifier())) { 3862 throw new IllegalArgumentException("Invalid network specifier - must not be '" 3863 + NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER + "'"); 3864 } 3865 3866 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3867 nextNetworkRequestId()); 3868 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, type); 3869 if (DBG) log("requestNetwork for " + nri); 3870 3871 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3872 if (timeoutMs > 0) { 3873 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3874 nri), timeoutMs); 3875 } 3876 return networkRequest; 3877 } 3878 3879 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3880 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3881 enforceConnectivityInternalPermission(); 3882 } else { 3883 enforceChangePermission(); 3884 } 3885 } 3886 3887 @Override 3888 public boolean requestBandwidthUpdate(Network network) { 3889 enforceAccessPermission(); 3890 NetworkAgentInfo nai = null; 3891 if (network == null) { 3892 return false; 3893 } 3894 synchronized (mNetworkForNetId) { 3895 nai = mNetworkForNetId.get(network.netId); 3896 } 3897 if (nai != null) { 3898 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3899 return true; 3900 } 3901 return false; 3902 } 3903 3904 3905 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3906 // if UID is restricted, don't allow them to bring up metered APNs 3907 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3908 final int uidRules; 3909 final int uid = Binder.getCallingUid(); 3910 synchronized(mRulesLock) { 3911 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3912 } 3913 if (uidRules != RULE_ALLOW_ALL) { 3914 // we could silently fail or we can filter the available nets to only give 3915 // them those they have access to. Chose the more useful 3916 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3917 } 3918 } 3919 } 3920 3921 @Override 3922 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3923 PendingIntent operation) { 3924 checkNotNull(operation, "PendingIntent cannot be null."); 3925 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3926 enforceNetworkRequestPermissions(networkCapabilities); 3927 enforceMeteredApnPolicy(networkCapabilities); 3928 ensureRequestableCapabilities(networkCapabilities); 3929 3930 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3931 nextNetworkRequestId()); 3932 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3933 NetworkRequestType.REQUEST); 3934 if (DBG) log("pendingRequest for " + nri); 3935 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3936 nri)); 3937 return networkRequest; 3938 } 3939 3940 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3941 mHandler.sendMessageDelayed( 3942 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3943 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3944 } 3945 3946 @Override 3947 public void releasePendingNetworkRequest(PendingIntent operation) { 3948 checkNotNull(operation, "PendingIntent cannot be null."); 3949 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3950 getCallingUid(), 0, operation)); 3951 } 3952 3953 // In order to implement the compatibility measure for pre-M apps that call 3954 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3955 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3956 // This ensures it has permission to do so. 3957 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3958 if (nc == null) { 3959 return false; 3960 } 3961 int[] transportTypes = nc.getTransportTypes(); 3962 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3963 return false; 3964 } 3965 try { 3966 mContext.enforceCallingOrSelfPermission( 3967 android.Manifest.permission.ACCESS_WIFI_STATE, 3968 "ConnectivityService"); 3969 } catch (SecurityException e) { 3970 return false; 3971 } 3972 return true; 3973 } 3974 3975 @Override 3976 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3977 Messenger messenger, IBinder binder) { 3978 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3979 enforceAccessPermission(); 3980 } 3981 3982 NetworkRequest networkRequest = new NetworkRequest( 3983 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3984 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3985 NetworkRequestType.LISTEN); 3986 if (VDBG) log("listenForNetwork for " + nri); 3987 3988 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3989 return networkRequest; 3990 } 3991 3992 @Override 3993 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3994 PendingIntent operation) { 3995 checkNotNull(operation, "PendingIntent cannot be null."); 3996 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3997 enforceAccessPermission(); 3998 } 3999 4000 NetworkRequest networkRequest = new NetworkRequest( 4001 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 4002 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 4003 NetworkRequestType.LISTEN); 4004 if (VDBG) log("pendingListenForNetwork for " + nri); 4005 4006 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4007 } 4008 4009 @Override 4010 public void releaseNetworkRequest(NetworkRequest networkRequest) { 4011 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 4012 0, networkRequest)); 4013 } 4014 4015 @Override 4016 public void registerNetworkFactory(Messenger messenger, String name) { 4017 enforceConnectivityInternalPermission(); 4018 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 4019 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 4020 } 4021 4022 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 4023 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 4024 mNetworkFactoryInfos.put(nfi.messenger, nfi); 4025 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 4026 } 4027 4028 @Override 4029 public void unregisterNetworkFactory(Messenger messenger) { 4030 enforceConnectivityInternalPermission(); 4031 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 4032 } 4033 4034 private void handleUnregisterNetworkFactory(Messenger messenger) { 4035 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 4036 if (nfi == null) { 4037 loge("Failed to find Messenger in unregisterNetworkFactory"); 4038 return; 4039 } 4040 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 4041 } 4042 4043 /** 4044 * NetworkAgentInfo supporting a request by requestId. 4045 * These have already been vetted (their Capabilities satisfy the request) 4046 * and the are the highest scored network available. 4047 * the are keyed off the Requests requestId. 4048 */ 4049 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 4050 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 4051 new SparseArray<NetworkAgentInfo>(); 4052 4053 // NOTE: Accessed on multiple threads, must be synchronized on itself. 4054 @GuardedBy("mNetworkForNetId") 4055 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 4056 new SparseArray<NetworkAgentInfo>(); 4057 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 4058 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 4059 // there may not be a strict 1:1 correlation between the two. 4060 @GuardedBy("mNetworkForNetId") 4061 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 4062 4063 // NetworkAgentInfo keyed off its connecting messenger 4064 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 4065 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 4066 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 4067 new HashMap<Messenger, NetworkAgentInfo>(); 4068 4069 @GuardedBy("mBlockedAppUids") 4070 private final HashSet<Integer> mBlockedAppUids = new HashSet(); 4071 4072 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 4073 private final NetworkRequest mDefaultRequest; 4074 4075 // Request used to optionally keep mobile data active even when higher 4076 // priority networks like Wi-Fi are active. 4077 private final NetworkRequest mDefaultMobileDataRequest; 4078 4079 private NetworkAgentInfo getDefaultNetwork() { 4080 return mNetworkForRequestId.get(mDefaultRequest.requestId); 4081 } 4082 4083 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 4084 return nai == getDefaultNetwork(); 4085 } 4086 4087 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 4088 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 4089 int currentScore, NetworkMisc networkMisc) { 4090 enforceConnectivityInternalPermission(); 4091 4092 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 4093 // satisfies mDefaultRequest. 4094 final NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 4095 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 4096 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 4097 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest, this); 4098 synchronized (this) { 4099 nai.networkMonitor.systemReady = mSystemReady; 4100 } 4101 addValidationLogs(nai.networkMonitor.getValidationLogs(), nai.network); 4102 if (DBG) log("registerNetworkAgent " + nai); 4103 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 4104 return nai.network.netId; 4105 } 4106 4107 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 4108 if (VDBG) log("Got NetworkAgent Messenger"); 4109 mNetworkAgentInfos.put(na.messenger, na); 4110 synchronized (mNetworkForNetId) { 4111 mNetworkForNetId.put(na.network.netId, na); 4112 } 4113 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 4114 NetworkInfo networkInfo = na.networkInfo; 4115 na.networkInfo = null; 4116 updateNetworkInfo(na, networkInfo); 4117 } 4118 4119 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 4120 LinkProperties newLp = networkAgent.linkProperties; 4121 int netId = networkAgent.network.netId; 4122 4123 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 4124 // we do anything else, make sure its LinkProperties are accurate. 4125 if (networkAgent.clatd != null) { 4126 networkAgent.clatd.fixupLinkProperties(oldLp); 4127 } 4128 4129 updateInterfaces(newLp, oldLp, netId); 4130 updateMtu(newLp, oldLp); 4131 // TODO - figure out what to do for clat 4132// for (LinkProperties lp : newLp.getStackedLinks()) { 4133// updateMtu(lp, null); 4134// } 4135 updateTcpBufferSizes(networkAgent); 4136 4137 updateRoutes(newLp, oldLp, netId); 4138 updateDnses(newLp, oldLp, netId); 4139 4140 updateClat(newLp, oldLp, networkAgent); 4141 if (isDefaultNetwork(networkAgent)) { 4142 handleApplyDefaultProxy(newLp.getHttpProxy()); 4143 } else { 4144 updateProxy(newLp, oldLp, networkAgent); 4145 } 4146 // TODO - move this check to cover the whole function 4147 if (!Objects.equals(newLp, oldLp)) { 4148 notifyIfacesChangedForNetworkStats(); 4149 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 4150 } 4151 4152 mKeepaliveTracker.handleCheckKeepalivesStillValid(networkAgent); 4153 } 4154 4155 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 4156 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 4157 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 4158 4159 if (!wasRunningClat && shouldRunClat) { 4160 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 4161 nai.clatd.start(); 4162 } else if (wasRunningClat && !shouldRunClat) { 4163 nai.clatd.stop(); 4164 } 4165 } 4166 4167 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 4168 CompareResult<String> interfaceDiff = new CompareResult<String>(); 4169 if (oldLp != null) { 4170 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 4171 } else if (newLp != null) { 4172 interfaceDiff.added = newLp.getAllInterfaceNames(); 4173 } 4174 for (String iface : interfaceDiff.added) { 4175 try { 4176 if (DBG) log("Adding iface " + iface + " to network " + netId); 4177 mNetd.addInterfaceToNetwork(iface, netId); 4178 } catch (Exception e) { 4179 loge("Exception adding interface: " + e); 4180 } 4181 } 4182 for (String iface : interfaceDiff.removed) { 4183 try { 4184 if (DBG) log("Removing iface " + iface + " from network " + netId); 4185 mNetd.removeInterfaceFromNetwork(iface, netId); 4186 } catch (Exception e) { 4187 loge("Exception removing interface: " + e); 4188 } 4189 } 4190 } 4191 4192 /** 4193 * Have netd update routes from oldLp to newLp. 4194 * @return true if routes changed between oldLp and newLp 4195 */ 4196 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 4197 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 4198 if (oldLp != null) { 4199 routeDiff = oldLp.compareAllRoutes(newLp); 4200 } else if (newLp != null) { 4201 routeDiff.added = newLp.getAllRoutes(); 4202 } 4203 4204 // add routes before removing old in case it helps with continuous connectivity 4205 4206 // do this twice, adding non-nexthop routes first, then routes they are dependent on 4207 for (RouteInfo route : routeDiff.added) { 4208 if (route.hasGateway()) continue; 4209 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4210 try { 4211 mNetd.addRoute(netId, route); 4212 } catch (Exception e) { 4213 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 4214 loge("Exception in addRoute for non-gateway: " + e); 4215 } 4216 } 4217 } 4218 for (RouteInfo route : routeDiff.added) { 4219 if (route.hasGateway() == false) continue; 4220 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4221 try { 4222 mNetd.addRoute(netId, route); 4223 } catch (Exception e) { 4224 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4225 loge("Exception in addRoute for gateway: " + e); 4226 } 4227 } 4228 } 4229 4230 for (RouteInfo route : routeDiff.removed) { 4231 if (VDBG) log("Removing Route [" + route + "] from network " + netId); 4232 try { 4233 mNetd.removeRoute(netId, route); 4234 } catch (Exception e) { 4235 loge("Exception in removeRoute: " + e); 4236 } 4237 } 4238 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4239 } 4240 4241 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId) { 4242 if (oldLp != null && newLp.isIdenticalDnses(oldLp)) { 4243 return; // no updating necessary 4244 } 4245 4246 Collection<InetAddress> dnses = newLp.getDnsServers(); 4247 if (DBG) log("Setting DNS servers for network " + netId + " to " + dnses); 4248 try { 4249 mNetd.setDnsServersForNetwork( 4250 netId, NetworkUtils.makeStrings(dnses), newLp.getDomains()); 4251 } catch (Exception e) { 4252 loge("Exception in setDnsServersForNetwork: " + e); 4253 } 4254 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 4255 if (defaultNai != null && defaultNai.network.netId == netId) { 4256 setDefaultDnsSystemProperties(dnses); 4257 } 4258 flushVmDnsCache(); 4259 } 4260 4261 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4262 int last = 0; 4263 for (InetAddress dns : dnses) { 4264 ++last; 4265 String key = "net.dns" + last; 4266 String value = dns.getHostAddress(); 4267 SystemProperties.set(key, value); 4268 } 4269 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4270 String key = "net.dns" + i; 4271 SystemProperties.set(key, ""); 4272 } 4273 mNumDnsEntries = last; 4274 } 4275 4276 /** 4277 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 4278 * augmented with any stateful capabilities implied from {@code networkAgent} 4279 * (e.g., validated status and captive portal status). 4280 * 4281 * @param nai the network having its capabilities updated. 4282 * @param networkCapabilities the new network capabilities. 4283 */ 4284 private void updateCapabilities(NetworkAgentInfo nai, NetworkCapabilities networkCapabilities) { 4285 // Don't modify caller's NetworkCapabilities. 4286 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4287 if (nai.lastValidated) { 4288 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4289 } else { 4290 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4291 } 4292 if (nai.lastCaptivePortalDetected) { 4293 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4294 } else { 4295 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4296 } 4297 if (!Objects.equals(nai.networkCapabilities, networkCapabilities)) { 4298 final int oldScore = nai.getCurrentScore(); 4299 if (nai.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) != 4300 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED)) { 4301 try { 4302 mNetd.setNetworkPermission(nai.network.netId, 4303 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) ? 4304 null : NetworkManagementService.PERMISSION_SYSTEM); 4305 } catch (RemoteException e) { 4306 loge("Exception in setNetworkPermission: " + e); 4307 } 4308 } 4309 synchronized (nai) { 4310 nai.networkCapabilities = networkCapabilities; 4311 } 4312 rematchAllNetworksAndRequests(nai, oldScore); 4313 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 4314 } 4315 } 4316 4317 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4318 for (int i = 0; i < nai.networkRequests.size(); i++) { 4319 NetworkRequest nr = nai.networkRequests.valueAt(i); 4320 // Don't send listening requests to factories. b/17393458 4321 if (!isRequest(nr)) continue; 4322 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4323 } 4324 } 4325 4326 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4327 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4328 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4329 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4330 networkRequest); 4331 } 4332 } 4333 4334 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4335 int notificationType) { 4336 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4337 Intent intent = new Intent(); 4338 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4339 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4340 nri.mPendingIntentSent = true; 4341 sendIntent(nri.mPendingIntent, intent); 4342 } 4343 // else not handled 4344 } 4345 4346 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4347 mPendingIntentWakeLock.acquire(); 4348 try { 4349 if (DBG) log("Sending " + pendingIntent); 4350 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4351 } catch (PendingIntent.CanceledException e) { 4352 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4353 mPendingIntentWakeLock.release(); 4354 releasePendingNetworkRequest(pendingIntent); 4355 } 4356 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4357 } 4358 4359 @Override 4360 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4361 String resultData, Bundle resultExtras) { 4362 if (DBG) log("Finished sending " + pendingIntent); 4363 mPendingIntentWakeLock.release(); 4364 // Release with a delay so the receiving client has an opportunity to put in its 4365 // own request. 4366 releasePendingNetworkRequestWithDelay(pendingIntent); 4367 } 4368 4369 private void callCallbackForRequest(NetworkRequestInfo nri, 4370 NetworkAgentInfo networkAgent, int notificationType) { 4371 if (nri.messenger == null) return; // Default request has no msgr 4372 Bundle bundle = new Bundle(); 4373 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4374 new NetworkRequest(nri.request)); 4375 Message msg = Message.obtain(); 4376 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4377 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4378 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4379 } 4380 switch (notificationType) { 4381 case ConnectivityManager.CALLBACK_LOSING: { 4382 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4383 break; 4384 } 4385 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4386 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4387 new NetworkCapabilities(networkAgent.networkCapabilities)); 4388 break; 4389 } 4390 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4391 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4392 new LinkProperties(networkAgent.linkProperties)); 4393 break; 4394 } 4395 } 4396 msg.what = notificationType; 4397 msg.setData(bundle); 4398 try { 4399 if (VDBG) { 4400 log("sending notification " + notifyTypeToName(notificationType) + 4401 " for " + nri.request); 4402 } 4403 nri.messenger.send(msg); 4404 } catch (RemoteException e) { 4405 // may occur naturally in the race of binder death. 4406 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4407 } 4408 } 4409 4410 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4411 for (int i = 0; i < nai.networkRequests.size(); i++) { 4412 NetworkRequest nr = nai.networkRequests.valueAt(i); 4413 // Ignore listening requests. 4414 if (!isRequest(nr)) continue; 4415 loge("Dead network still had at least " + nr); 4416 break; 4417 } 4418 nai.asyncChannel.disconnect(); 4419 } 4420 4421 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4422 if (oldNetwork == null) { 4423 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4424 return; 4425 } 4426 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4427 teardownUnneededNetwork(oldNetwork); 4428 } 4429 4430 private void makeDefault(NetworkAgentInfo newNetwork) { 4431 if (DBG) log("Switching to new default network: " + newNetwork); 4432 ConnectivityServiceChangeEvent.logEvent(newNetwork.network.netId); 4433 setupDataActivityTracking(newNetwork); 4434 try { 4435 mNetd.setDefaultNetId(newNetwork.network.netId); 4436 } catch (Exception e) { 4437 loge("Exception setting default network :" + e); 4438 } 4439 notifyLockdownVpn(newNetwork); 4440 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4441 updateTcpBufferSizes(newNetwork); 4442 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4443 } 4444 4445 // Handles a network appearing or improving its score. 4446 // 4447 // - Evaluates all current NetworkRequests that can be 4448 // satisfied by newNetwork, and reassigns to newNetwork 4449 // any such requests for which newNetwork is the best. 4450 // 4451 // - Lingers any validated Networks that as a result are no longer 4452 // needed. A network is needed if it is the best network for 4453 // one or more NetworkRequests, or if it is a VPN. 4454 // 4455 // - Tears down newNetwork if it just became validated 4456 // but turns out to be unneeded. 4457 // 4458 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4459 // networks that have no chance (i.e. even if validated) 4460 // of becoming the highest scoring network. 4461 // 4462 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4463 // it does not remove NetworkRequests that other Networks could better satisfy. 4464 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4465 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4466 // as it performs better by a factor of the number of Networks. 4467 // 4468 // @param newNetwork is the network to be matched against NetworkRequests. 4469 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4470 // performed to tear down unvalidated networks that have no chance (i.e. even if 4471 // validated) of becoming the highest scoring network. 4472 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, 4473 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4474 if (!newNetwork.created) return; 4475 boolean keep = newNetwork.isVPN(); 4476 boolean isNewDefault = false; 4477 NetworkAgentInfo oldDefaultNetwork = null; 4478 if (VDBG) log("rematching " + newNetwork.name()); 4479 // Find and migrate to this Network any NetworkRequests for 4480 // which this network is now the best. 4481 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4482 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4483 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4484 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4485 final NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4486 final boolean satisfies = newNetwork.satisfies(nri.request); 4487 if (newNetwork == currentNetwork && satisfies) { 4488 if (VDBG) { 4489 log("Network " + newNetwork.name() + " was already satisfying" + 4490 " request " + nri.request.requestId + ". No change."); 4491 } 4492 keep = true; 4493 continue; 4494 } 4495 4496 // check if it satisfies the NetworkCapabilities 4497 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4498 if (satisfies) { 4499 if (!nri.isRequest()) { 4500 // This is not a request, it's a callback listener. 4501 // Add it to newNetwork regardless of score. 4502 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4503 continue; 4504 } 4505 4506 // next check if it's better than any current network we're using for 4507 // this request 4508 if (VDBG) { 4509 log("currentScore = " + 4510 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4511 ", newScore = " + newNetwork.getCurrentScore()); 4512 } 4513 if (currentNetwork == null || 4514 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4515 if (VDBG) log("rematch for " + newNetwork.name()); 4516 if (currentNetwork != null) { 4517 if (VDBG) log(" accepting network in place of " + currentNetwork.name()); 4518 currentNetwork.networkRequests.remove(nri.request.requestId); 4519 currentNetwork.networkLingered.add(nri.request); 4520 affectedNetworks.add(currentNetwork); 4521 } else { 4522 if (VDBG) log(" accepting network in place of null"); 4523 } 4524 unlinger(newNetwork); 4525 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4526 if (!newNetwork.addRequest(nri.request)) { 4527 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4528 } 4529 addedRequests.add(nri); 4530 keep = true; 4531 // Tell NetworkFactories about the new score, so they can stop 4532 // trying to connect if they know they cannot match it. 4533 // TODO - this could get expensive if we have alot of requests for this 4534 // network. Think about if there is a way to reduce this. Push 4535 // netid->request mapping to each factory? 4536 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4537 if (mDefaultRequest.requestId == nri.request.requestId) { 4538 isNewDefault = true; 4539 oldDefaultNetwork = currentNetwork; 4540 } 4541 } 4542 } else if (newNetwork.networkRequests.get(nri.request.requestId) != null) { 4543 // If "newNetwork" is listed as satisfying "nri" but no longer satisfies "nri", 4544 // mark it as no longer satisfying "nri". Because networks are processed by 4545 // rematchAllNetworkAndRequests() in descending score order, "currentNetwork" will 4546 // match "newNetwork" before this loop will encounter a "currentNetwork" with higher 4547 // score than "newNetwork" and where "currentNetwork" no longer satisfies "nri". 4548 // This means this code doesn't have to handle the case where "currentNetwork" no 4549 // longer satisfies "nri" when "currentNetwork" does not equal "newNetwork". 4550 if (DBG) { 4551 log("Network " + newNetwork.name() + " stopped satisfying" + 4552 " request " + nri.request.requestId); 4553 } 4554 newNetwork.networkRequests.remove(nri.request.requestId); 4555 if (currentNetwork == newNetwork) { 4556 mNetworkForRequestId.remove(nri.request.requestId); 4557 sendUpdatedScoreToFactories(nri.request, 0); 4558 } else { 4559 if (nri.isRequest()) { 4560 Slog.wtf(TAG, "BUG: Removing request " + nri.request.requestId + " from " + 4561 newNetwork.name() + 4562 " without updating mNetworkForRequestId or factories!"); 4563 } 4564 } 4565 // TODO: technically, sending CALLBACK_LOST here is 4566 // incorrect if nri is a request (not a listen) and there 4567 // is a replacement network currently connected that can 4568 // satisfy it. However, the only capability that can both 4569 // a) be requested and b) change is NET_CAPABILITY_TRUSTED, 4570 // so this code is only incorrect for a network that loses 4571 // the TRUSTED capability, which is a rare case. 4572 callCallbackForRequest(nri, newNetwork, ConnectivityManager.CALLBACK_LOST); 4573 } 4574 } 4575 // Linger any networks that are no longer needed. 4576 for (NetworkAgentInfo nai : affectedNetworks) { 4577 if (nai.lingering) { 4578 // Already lingered. Nothing to do. This can only happen if "nai" is in 4579 // "affectedNetworks" twice. The reasoning being that to get added to 4580 // "affectedNetworks", "nai" must have been satisfying a NetworkRequest 4581 // (i.e. not lingered) so it could have only been lingered by this loop. 4582 // unneeded(nai) will be false and we'll call unlinger() below which would 4583 // be bad, so handle it here. 4584 } else if (unneeded(nai)) { 4585 linger(nai); 4586 } else { 4587 // Clear nai.networkLingered we might have added above. 4588 unlinger(nai); 4589 } 4590 } 4591 if (isNewDefault) { 4592 // Notify system services that this network is up. 4593 makeDefault(newNetwork); 4594 synchronized (ConnectivityService.this) { 4595 // have a new default network, release the transition wakelock in 4596 // a second if it's held. The second pause is to allow apps 4597 // to reconnect over the new network 4598 if (mNetTransitionWakeLock.isHeld()) { 4599 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4600 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4601 mNetTransitionWakeLockSerialNumber, 0), 4602 1000); 4603 } 4604 } 4605 } 4606 4607 // do this after the default net is switched, but 4608 // before LegacyTypeTracker sends legacy broadcasts 4609 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4610 4611 if (isNewDefault) { 4612 // Maintain the illusion: since the legacy API only 4613 // understands one network at a time, we must pretend 4614 // that the current default network disconnected before 4615 // the new one connected. 4616 if (oldDefaultNetwork != null) { 4617 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4618 oldDefaultNetwork, true); 4619 } 4620 mDefaultInetConditionPublished = newNetwork.lastValidated ? 100 : 0; 4621 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4622 notifyLockdownVpn(newNetwork); 4623 } 4624 4625 if (keep) { 4626 // Notify battery stats service about this network, both the normal 4627 // interface and any stacked links. 4628 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4629 try { 4630 final IBatteryStats bs = BatteryStatsService.getService(); 4631 final int type = newNetwork.networkInfo.getType(); 4632 4633 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4634 bs.noteNetworkInterfaceType(baseIface, type); 4635 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4636 final String stackedIface = stacked.getInterfaceName(); 4637 bs.noteNetworkInterfaceType(stackedIface, type); 4638 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4639 } 4640 } catch (RemoteException ignored) { 4641 } 4642 4643 // This has to happen after the notifyNetworkCallbacks as that tickles each 4644 // ConnectivityManager instance so that legacy requests correctly bind dns 4645 // requests to this network. The legacy users are listening for this bcast 4646 // and will generally do a dns request so they can ensureRouteToHost and if 4647 // they do that before the callbacks happen they'll use the default network. 4648 // 4649 // TODO: Is there still a race here? We send the broadcast 4650 // after sending the callback, but if the app can receive the 4651 // broadcast before the callback, it might still break. 4652 // 4653 // This *does* introduce a race where if the user uses the new api 4654 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4655 // they may get old info. Reverse this after the old startUsing api is removed. 4656 // This is on top of the multiple intent sequencing referenced in the todo above. 4657 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4658 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4659 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4660 // legacy type tracker filters out repeat adds 4661 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4662 } 4663 } 4664 4665 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4666 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4667 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4668 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4669 if (newNetwork.isVPN()) { 4670 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4671 } 4672 } 4673 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4674 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4675 if (unneeded(nai)) { 4676 if (DBG) log("Reaping " + nai.name()); 4677 teardownUnneededNetwork(nai); 4678 } 4679 } 4680 } 4681 } 4682 4683 /** 4684 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4685 * being disconnected. 4686 * @param changed If only one Network's score or capabilities have been modified since the last 4687 * time this function was called, pass this Network in this argument, otherwise pass 4688 * null. 4689 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4690 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4691 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4692 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4693 * network's score. 4694 */ 4695 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4696 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4697 // to avoid the slowness. It is not simply enough to process just "changed", for 4698 // example in the case where "changed"'s score decreases and another network should begin 4699 // satifying a NetworkRequest that "changed" currently satisfies. 4700 4701 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4702 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4703 // rematchNetworkAndRequests() handles. 4704 if (changed != null && oldScore < changed.getCurrentScore()) { 4705 rematchNetworkAndRequests(changed, ReapUnvalidatedNetworks.REAP); 4706 } else { 4707 final NetworkAgentInfo[] nais = mNetworkAgentInfos.values().toArray( 4708 new NetworkAgentInfo[mNetworkAgentInfos.size()]); 4709 // Rematch higher scoring networks first to prevent requests first matching a lower 4710 // scoring network and then a higher scoring network, which could produce multiple 4711 // callbacks and inadvertently unlinger networks. 4712 Arrays.sort(nais); 4713 for (NetworkAgentInfo nai : nais) { 4714 rematchNetworkAndRequests(nai, 4715 // Only reap the last time through the loop. Reaping before all rematching 4716 // is complete could incorrectly teardown a network that hasn't yet been 4717 // rematched. 4718 (nai != nais[nais.length-1]) ? ReapUnvalidatedNetworks.DONT_REAP 4719 : ReapUnvalidatedNetworks.REAP); 4720 } 4721 } 4722 } 4723 4724 private void updateInetCondition(NetworkAgentInfo nai) { 4725 // Don't bother updating until we've graduated to validated at least once. 4726 if (!nai.everValidated) return; 4727 // For now only update icons for default connection. 4728 // TODO: Update WiFi and cellular icons separately. b/17237507 4729 if (!isDefaultNetwork(nai)) return; 4730 4731 int newInetCondition = nai.lastValidated ? 100 : 0; 4732 // Don't repeat publish. 4733 if (newInetCondition == mDefaultInetConditionPublished) return; 4734 4735 mDefaultInetConditionPublished = newInetCondition; 4736 sendInetConditionBroadcast(nai.networkInfo); 4737 } 4738 4739 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4740 if (mLockdownTracker != null) { 4741 if (nai != null && nai.isVPN()) { 4742 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4743 } else { 4744 mLockdownTracker.onNetworkInfoChanged(); 4745 } 4746 } 4747 } 4748 4749 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4750 NetworkInfo.State state = newInfo.getState(); 4751 NetworkInfo oldInfo = null; 4752 final int oldScore = networkAgent.getCurrentScore(); 4753 synchronized (networkAgent) { 4754 oldInfo = networkAgent.networkInfo; 4755 networkAgent.networkInfo = newInfo; 4756 } 4757 notifyLockdownVpn(networkAgent); 4758 4759 if (oldInfo != null && oldInfo.getState() == state) { 4760 if (oldInfo.isRoaming() != newInfo.isRoaming()) { 4761 if (VDBG) log("roaming status changed, notifying NetworkStatsService"); 4762 notifyIfacesChangedForNetworkStats(); 4763 } else if (VDBG) log("ignoring duplicate network state non-change"); 4764 // In either case, no further work should be needed. 4765 return; 4766 } 4767 if (DBG) { 4768 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4769 (oldInfo == null ? "null" : oldInfo.getState()) + 4770 " to " + state); 4771 } 4772 4773 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4774 try { 4775 // This should never fail. Specifying an already in use NetID will cause failure. 4776 if (networkAgent.isVPN()) { 4777 mNetd.createVirtualNetwork(networkAgent.network.netId, 4778 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4779 (networkAgent.networkMisc == null || 4780 !networkAgent.networkMisc.allowBypass)); 4781 } else { 4782 mNetd.createPhysicalNetwork(networkAgent.network.netId, 4783 networkAgent.networkCapabilities.hasCapability( 4784 NET_CAPABILITY_NOT_RESTRICTED) ? 4785 null : NetworkManagementService.PERMISSION_SYSTEM); 4786 } 4787 } catch (Exception e) { 4788 loge("Error creating network " + networkAgent.network.netId + ": " 4789 + e.getMessage()); 4790 return; 4791 } 4792 networkAgent.created = true; 4793 updateLinkProperties(networkAgent, null); 4794 notifyIfacesChangedForNetworkStats(); 4795 4796 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4797 scheduleUnvalidatedPrompt(networkAgent); 4798 4799 if (networkAgent.isVPN()) { 4800 // Temporarily disable the default proxy (not global). 4801 synchronized (mProxyLock) { 4802 if (!mDefaultProxyDisabled) { 4803 mDefaultProxyDisabled = true; 4804 if (mGlobalProxy == null && mDefaultProxy != null) { 4805 sendProxyBroadcast(null); 4806 } 4807 } 4808 } 4809 // TODO: support proxy per network. 4810 } 4811 4812 // Whether a particular NetworkRequest listen should cause signal strength thresholds to 4813 // be communicated to a particular NetworkAgent depends only on the network's immutable, 4814 // capabilities, so it only needs to be done once on initial connect, not every time the 4815 // network's capabilities change. Note that we do this before rematching the network, 4816 // so we could decide to tear it down immediately afterwards. That's fine though - on 4817 // disconnection NetworkAgents should stop any signal strength monitoring they have been 4818 // doing. 4819 updateSignalStrengthThresholds(networkAgent, "CONNECT", null); 4820 4821 // Consider network even though it is not yet validated. 4822 rematchNetworkAndRequests(networkAgent, ReapUnvalidatedNetworks.REAP); 4823 4824 // This has to happen after matching the requests, because callbacks are just requests. 4825 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4826 } else if (state == NetworkInfo.State.DISCONNECTED) { 4827 networkAgent.asyncChannel.disconnect(); 4828 if (networkAgent.isVPN()) { 4829 synchronized (mProxyLock) { 4830 if (mDefaultProxyDisabled) { 4831 mDefaultProxyDisabled = false; 4832 if (mGlobalProxy == null && mDefaultProxy != null) { 4833 sendProxyBroadcast(mDefaultProxy); 4834 } 4835 } 4836 } 4837 } 4838 } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) || 4839 state == NetworkInfo.State.SUSPENDED) { 4840 // going into or coming out of SUSPEND: rescore and notify 4841 if (networkAgent.getCurrentScore() != oldScore) { 4842 rematchAllNetworksAndRequests(networkAgent, oldScore); 4843 } 4844 notifyNetworkCallbacks(networkAgent, (state == NetworkInfo.State.SUSPENDED ? 4845 ConnectivityManager.CALLBACK_SUSPENDED : 4846 ConnectivityManager.CALLBACK_RESUMED)); 4847 mLegacyTypeTracker.update(networkAgent); 4848 } 4849 } 4850 4851 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4852 if (VDBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4853 if (score < 0) { 4854 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4855 "). Bumping score to min of 0"); 4856 score = 0; 4857 } 4858 4859 final int oldScore = nai.getCurrentScore(); 4860 nai.setCurrentScore(score); 4861 4862 rematchAllNetworksAndRequests(nai, oldScore); 4863 4864 sendUpdatedScoreToFactories(nai); 4865 } 4866 4867 // notify only this one new request of the current state 4868 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4869 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4870 // TODO - read state from monitor to decide what to send. 4871// if (nai.networkMonitor.isLingering()) { 4872// notifyType = NetworkCallbacks.LOSING; 4873// } else if (nai.networkMonitor.isEvaluating()) { 4874// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4875// } 4876 if (nri.mPendingIntent == null) { 4877 callCallbackForRequest(nri, nai, notifyType); 4878 } else { 4879 sendPendingIntentForRequest(nri, nai, notifyType); 4880 } 4881 } 4882 4883 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, DetailedState state, int type) { 4884 // The NetworkInfo we actually send out has no bearing on the real 4885 // state of affairs. For example, if the default connection is mobile, 4886 // and a request for HIPRI has just gone away, we need to pretend that 4887 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4888 // the state to DISCONNECTED, even though the network is of type MOBILE 4889 // and is still connected. 4890 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4891 info.setType(type); 4892 if (state != DetailedState.DISCONNECTED) { 4893 info.setDetailedState(state, null, info.getExtraInfo()); 4894 sendConnectedBroadcast(info); 4895 } else { 4896 info.setDetailedState(state, info.getReason(), info.getExtraInfo()); 4897 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4898 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4899 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4900 if (info.isFailover()) { 4901 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4902 nai.networkInfo.setFailover(false); 4903 } 4904 if (info.getReason() != null) { 4905 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4906 } 4907 if (info.getExtraInfo() != null) { 4908 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4909 } 4910 NetworkAgentInfo newDefaultAgent = null; 4911 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4912 newDefaultAgent = getDefaultNetwork(); 4913 if (newDefaultAgent != null) { 4914 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4915 newDefaultAgent.networkInfo); 4916 } else { 4917 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4918 } 4919 } 4920 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4921 mDefaultInetConditionPublished); 4922 sendStickyBroadcast(intent); 4923 if (newDefaultAgent != null) { 4924 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4925 } 4926 } 4927 } 4928 4929 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4930 if (VDBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4931 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4932 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4933 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4934 if (VDBG) log(" sending notification for " + nr); 4935 if (nri.mPendingIntent == null) { 4936 callCallbackForRequest(nri, networkAgent, notifyType); 4937 } else { 4938 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4939 } 4940 } 4941 } 4942 4943 private String notifyTypeToName(int notifyType) { 4944 switch (notifyType) { 4945 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4946 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4947 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4948 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4949 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4950 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4951 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4952 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4953 } 4954 return "UNKNOWN"; 4955 } 4956 4957 /** 4958 * Notify NetworkStatsService that the set of active ifaces has changed, or that one of the 4959 * properties tracked by NetworkStatsService on an active iface has changed. 4960 */ 4961 private void notifyIfacesChangedForNetworkStats() { 4962 try { 4963 mStatsService.forceUpdateIfaces(); 4964 } catch (Exception ignored) { 4965 } 4966 } 4967 4968 @Override 4969 public boolean addVpnAddress(String address, int prefixLength) { 4970 throwIfLockdownEnabled(); 4971 int user = UserHandle.getUserId(Binder.getCallingUid()); 4972 synchronized (mVpns) { 4973 return mVpns.get(user).addAddress(address, prefixLength); 4974 } 4975 } 4976 4977 @Override 4978 public boolean removeVpnAddress(String address, int prefixLength) { 4979 throwIfLockdownEnabled(); 4980 int user = UserHandle.getUserId(Binder.getCallingUid()); 4981 synchronized (mVpns) { 4982 return mVpns.get(user).removeAddress(address, prefixLength); 4983 } 4984 } 4985 4986 @Override 4987 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4988 throwIfLockdownEnabled(); 4989 int user = UserHandle.getUserId(Binder.getCallingUid()); 4990 boolean success; 4991 synchronized (mVpns) { 4992 success = mVpns.get(user).setUnderlyingNetworks(networks); 4993 } 4994 if (success) { 4995 notifyIfacesChangedForNetworkStats(); 4996 } 4997 return success; 4998 } 4999 5000 @Override 5001 public String getCaptivePortalServerUrl() { 5002 return NetworkMonitor.getCaptivePortalServerUrl(mContext); 5003 } 5004 5005 @Override 5006 public void startNattKeepalive(Network network, int intervalSeconds, Messenger messenger, 5007 IBinder binder, String srcAddr, int srcPort, String dstAddr) { 5008 enforceKeepalivePermission(); 5009 mKeepaliveTracker.startNattKeepalive( 5010 getNetworkAgentInfoForNetwork(network), 5011 intervalSeconds, messenger, binder, 5012 srcAddr, srcPort, dstAddr, ConnectivityManager.PacketKeepalive.NATT_PORT); 5013 } 5014 5015 @Override 5016 public void stopKeepalive(Network network, int slot) { 5017 mHandler.sendMessage(mHandler.obtainMessage( 5018 NetworkAgent.CMD_STOP_PACKET_KEEPALIVE, slot, PacketKeepalive.SUCCESS, network)); 5019 } 5020 5021 @Override 5022 public void factoryReset() { 5023 enforceConnectivityInternalPermission(); 5024 5025 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 5026 return; 5027 } 5028 5029 final int userId = UserHandle.getCallingUserId(); 5030 5031 // Turn airplane mode off 5032 setAirplaneMode(false); 5033 5034 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 5035 // Untether 5036 for (String tether : getTetheredIfaces()) { 5037 untether(tether); 5038 } 5039 } 5040 5041 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 5042 // Turn VPN off 5043 VpnConfig vpnConfig = getVpnConfig(userId); 5044 if (vpnConfig != null) { 5045 if (vpnConfig.legacy) { 5046 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 5047 } else { 5048 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 5049 // in the future without user intervention. 5050 setVpnPackageAuthorization(vpnConfig.user, userId, false); 5051 5052 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 5053 } 5054 } 5055 } 5056 } 5057 5058 @VisibleForTesting 5059 public NetworkMonitor createNetworkMonitor(Context context, Handler handler, 5060 NetworkAgentInfo nai, NetworkRequest defaultRequest) { 5061 return new NetworkMonitor(context, handler, nai, defaultRequest); 5062 } 5063} 5064