ConnectivityService.java revision 3e5484d452cdf9f98e3c0e1abfe4a7297753cb5e
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_INTERNET; 27import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED; 28import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED; 29import static android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED; 30import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 31import static android.net.NetworkPolicyManager.RULE_REJECT_ALL; 32import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 33 34import android.annotation.Nullable; 35import android.app.AlarmManager; 36import android.app.Notification; 37import android.app.NotificationManager; 38import android.app.PendingIntent; 39import android.content.BroadcastReceiver; 40import android.content.ContentResolver; 41import android.content.Context; 42import android.content.Intent; 43import android.content.IntentFilter; 44import android.content.pm.PackageManager; 45import android.content.res.Configuration; 46import android.content.res.Resources; 47import android.database.ContentObserver; 48import android.net.ConnectivityManager; 49import android.net.IConnectivityManager; 50import android.net.INetworkManagementEventObserver; 51import android.net.INetworkPolicyListener; 52import android.net.INetworkPolicyManager; 53import android.net.INetworkStatsService; 54import android.net.LinkProperties; 55import android.net.LinkProperties.CompareResult; 56import android.net.Network; 57import android.net.NetworkAgent; 58import android.net.NetworkCapabilities; 59import android.net.NetworkConfig; 60import android.net.NetworkInfo; 61import android.net.NetworkInfo.DetailedState; 62import android.net.NetworkMisc; 63import android.net.NetworkQuotaInfo; 64import android.net.NetworkRequest; 65import android.net.NetworkState; 66import android.net.NetworkUtils; 67import android.net.Proxy; 68import android.net.ProxyInfo; 69import android.net.RouteInfo; 70import android.net.UidRange; 71import android.net.Uri; 72import android.os.Binder; 73import android.os.Bundle; 74import android.os.FileUtils; 75import android.os.Handler; 76import android.os.HandlerThread; 77import android.os.IBinder; 78import android.os.INetworkManagementService; 79import android.os.Looper; 80import android.os.Message; 81import android.os.Messenger; 82import android.os.ParcelFileDescriptor; 83import android.os.PowerManager; 84import android.os.Process; 85import android.os.RemoteException; 86import android.os.SystemClock; 87import android.os.SystemProperties; 88import android.os.UserHandle; 89import android.os.UserManager; 90import android.provider.Settings; 91import android.security.Credentials; 92import android.security.KeyStore; 93import android.telephony.TelephonyManager; 94import android.text.TextUtils; 95import android.util.Slog; 96import android.util.SparseArray; 97import android.util.SparseBooleanArray; 98import android.util.SparseIntArray; 99import android.util.Xml; 100 101import com.android.internal.R; 102import com.android.internal.annotations.GuardedBy; 103import com.android.internal.app.IBatteryStats; 104import com.android.internal.net.LegacyVpnInfo; 105import com.android.internal.net.NetworkStatsFactory; 106import com.android.internal.net.VpnConfig; 107import com.android.internal.net.VpnInfo; 108import com.android.internal.net.VpnProfile; 109import com.android.internal.telephony.DctConstants; 110import com.android.internal.util.AsyncChannel; 111import com.android.internal.util.IndentingPrintWriter; 112import com.android.internal.util.XmlUtils; 113import com.android.server.am.BatteryStatsService; 114import com.android.server.connectivity.DataConnectionStats; 115import com.android.server.connectivity.Nat464Xlat; 116import com.android.server.connectivity.NetworkAgentInfo; 117import com.android.server.connectivity.NetworkMonitor; 118import com.android.server.connectivity.PacManager; 119import com.android.server.connectivity.PermissionMonitor; 120import com.android.server.connectivity.Tethering; 121import com.android.server.connectivity.Vpn; 122import com.android.server.net.BaseNetworkObserver; 123import com.android.server.net.LockdownVpnTracker; 124import com.google.android.collect.Lists; 125import com.google.android.collect.Sets; 126 127import org.xmlpull.v1.XmlPullParser; 128import org.xmlpull.v1.XmlPullParserException; 129 130import java.io.File; 131import java.io.FileDescriptor; 132import java.io.FileNotFoundException; 133import java.io.FileReader; 134import java.io.IOException; 135import java.io.PrintWriter; 136import java.net.Inet4Address; 137import java.net.InetAddress; 138import java.net.UnknownHostException; 139import java.util.ArrayList; 140import java.util.Arrays; 141import java.util.Collection; 142import java.util.HashMap; 143import java.util.HashSet; 144import java.util.Iterator; 145import java.util.List; 146import java.util.Map; 147import java.util.Objects; 148import java.util.concurrent.atomic.AtomicInteger; 149 150/** 151 * @hide 152 */ 153public class ConnectivityService extends IConnectivityManager.Stub 154 implements PendingIntent.OnFinished { 155 private static final String TAG = "ConnectivityService"; 156 157 private static final boolean DBG = true; 158 private static final boolean VDBG = false; 159 160 private static final boolean LOGD_RULES = false; 161 162 // TODO: create better separation between radio types and network types 163 164 // how long to wait before switching back to a radio's default network 165 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 166 // system property that can override the above value 167 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 168 "android.telephony.apn-restore"; 169 170 // How long to wait before putting up a "This network doesn't have an Internet connection, 171 // connect anyway?" dialog after the user selects a network that doesn't validate. 172 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 173 174 // How long to delay to removal of a pending intent based request. 175 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 176 private final int mReleasePendingIntentDelayMs; 177 178 private Tethering mTethering; 179 180 private final PermissionMonitor mPermissionMonitor; 181 182 private KeyStore mKeyStore; 183 184 @GuardedBy("mVpns") 185 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 186 187 private boolean mLockdownEnabled; 188 private LockdownVpnTracker mLockdownTracker; 189 190 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 191 private Object mRulesLock = new Object(); 192 /** Currently active network rules by UID. */ 193 private SparseIntArray mUidRules = new SparseIntArray(); 194 /** Set of ifaces that are costly. */ 195 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 196 197 final private Context mContext; 198 private int mNetworkPreference; 199 // 0 is full bad, 100 is full good 200 private int mDefaultInetConditionPublished = 0; 201 202 private Object mDnsLock = new Object(); 203 private int mNumDnsEntries; 204 205 private boolean mTestMode; 206 private static ConnectivityService sServiceInstance; 207 208 private INetworkManagementService mNetd; 209 private INetworkStatsService mStatsService; 210 private INetworkPolicyManager mPolicyManager; 211 212 private String mCurrentTcpBufferSizes; 213 214 private static final int ENABLED = 1; 215 private static final int DISABLED = 0; 216 217 // Arguments to rematchNetworkAndRequests() 218 private enum NascentState { 219 // Indicates a network was just validated for the first time. If the network is found to 220 // be unwanted (i.e. not satisfy any NetworkRequests) it is torn down. 221 JUST_VALIDATED, 222 // Indicates a network was not validated for the first time immediately prior to this call. 223 NOT_JUST_VALIDATED 224 }; 225 private enum ReapUnvalidatedNetworks { 226 // Tear down unvalidated networks that have no chance (i.e. even if validated) of becoming 227 // the highest scoring network satisfying a NetworkRequest. This should be passed when it's 228 // known that there may be unvalidated networks that could potentially be reaped, and when 229 // all networks have been rematched against all NetworkRequests. 230 REAP, 231 // Don't reap unvalidated networks. This should be passed when it's known that there are 232 // no unvalidated networks that could potentially be reaped, and when some networks have 233 // not yet been rematched against all NetworkRequests. 234 DONT_REAP 235 }; 236 237 /** 238 * used internally to change our mobile data enabled flag 239 */ 240 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 241 242 /** 243 * used internally to clear a wakelock when transitioning 244 * from one net to another. Clear happens when we get a new 245 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 246 * after a timeout if no network is found (typically 1 min). 247 */ 248 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 249 250 /** 251 * used internally to reload global proxy settings 252 */ 253 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 254 255 /** 256 * used internally to send a sticky broadcast delayed. 257 */ 258 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 259 260 /** 261 * PAC manager has received new port. 262 */ 263 private static final int EVENT_PROXY_HAS_CHANGED = 16; 264 265 /** 266 * used internally when registering NetworkFactories 267 * obj = NetworkFactoryInfo 268 */ 269 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 270 271 /** 272 * used internally when registering NetworkAgents 273 * obj = Messenger 274 */ 275 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 276 277 /** 278 * used to add a network request 279 * includes a NetworkRequestInfo 280 */ 281 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 282 283 /** 284 * indicates a timeout period is over - check if we had a network yet or not 285 * and if not, call the timeout calback (but leave the request live until they 286 * cancel it. 287 * includes a NetworkRequestInfo 288 */ 289 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 290 291 /** 292 * used to add a network listener - no request 293 * includes a NetworkRequestInfo 294 */ 295 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 296 297 /** 298 * used to remove a network request, either a listener or a real request 299 * arg1 = UID of caller 300 * obj = NetworkRequest 301 */ 302 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 303 304 /** 305 * used internally when registering NetworkFactories 306 * obj = Messenger 307 */ 308 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 309 310 /** 311 * used internally to expire a wakelock when transitioning 312 * from one net to another. Expire happens when we fail to find 313 * a new network (typically after 1 minute) - 314 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 315 * a replacement network. 316 */ 317 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 318 319 /** 320 * Used internally to indicate the system is ready. 321 */ 322 private static final int EVENT_SYSTEM_READY = 25; 323 324 /** 325 * used to add a network request with a pending intent 326 * includes a NetworkRequestInfo 327 */ 328 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 329 330 /** 331 * used to remove a pending intent and its associated network request. 332 * arg1 = UID of caller 333 * obj = PendingIntent 334 */ 335 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 336 337 /** 338 * used to specify whether a network should be used even if unvalidated. 339 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 340 * arg2 = whether to remember this choice in the future (1 or 0) 341 * obj = network 342 */ 343 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 344 345 /** 346 * used to ask the user to confirm a connection to an unvalidated network. 347 * obj = network 348 */ 349 private static final int EVENT_PROMPT_UNVALIDATED = 29; 350 351 /** 352 * used internally to (re)configure mobile data always-on settings. 353 */ 354 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 355 356 /** Handler used for internal events. */ 357 final private InternalHandler mHandler; 358 /** Handler used for incoming {@link NetworkStateTracker} events. */ 359 final private NetworkStateTrackerHandler mTrackerHandler; 360 361 private boolean mSystemReady; 362 private Intent mInitialBroadcast; 363 364 private PowerManager.WakeLock mNetTransitionWakeLock; 365 private String mNetTransitionWakeLockCausedBy = ""; 366 private int mNetTransitionWakeLockSerialNumber; 367 private int mNetTransitionWakeLockTimeout; 368 private final PowerManager.WakeLock mPendingIntentWakeLock; 369 370 private InetAddress mDefaultDns; 371 372 // used in DBG mode to track inet condition reports 373 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 374 private ArrayList mInetLog; 375 376 // track the current default http proxy - tell the world if we get a new one (real change) 377 private volatile ProxyInfo mDefaultProxy = null; 378 private Object mProxyLock = new Object(); 379 private boolean mDefaultProxyDisabled = false; 380 381 // track the global proxy. 382 private ProxyInfo mGlobalProxy = null; 383 384 private PacManager mPacManager = null; 385 386 final private SettingsObserver mSettingsObserver; 387 388 private UserManager mUserManager; 389 390 NetworkConfig[] mNetConfigs; 391 int mNetworksDefined; 392 393 // the set of network types that can only be enabled by system/sig apps 394 List mProtectedNetworks; 395 396 private DataConnectionStats mDataConnectionStats; 397 398 TelephonyManager mTelephonyManager; 399 400 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 401 private final static int MIN_NET_ID = 100; // some reserved marks 402 private final static int MAX_NET_ID = 65535; 403 private int mNextNetId = MIN_NET_ID; 404 405 // sequence number of NetworkRequests 406 private int mNextNetworkRequestId = 1; 407 408 /** 409 * Implements support for the legacy "one network per network type" model. 410 * 411 * We used to have a static array of NetworkStateTrackers, one for each 412 * network type, but that doesn't work any more now that we can have, 413 * for example, more that one wifi network. This class stores all the 414 * NetworkAgentInfo objects that support a given type, but the legacy 415 * API will only see the first one. 416 * 417 * It serves two main purposes: 418 * 419 * 1. Provide information about "the network for a given type" (since this 420 * API only supports one). 421 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 422 * the first network for a given type changes, or if the default network 423 * changes. 424 */ 425 private class LegacyTypeTracker { 426 427 private static final boolean DBG = true; 428 private static final boolean VDBG = false; 429 private static final String TAG = "CSLegacyTypeTracker"; 430 431 /** 432 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 433 * Each list holds references to all NetworkAgentInfos that are used to 434 * satisfy requests for that network type. 435 * 436 * This array is built out at startup such that an unsupported network 437 * doesn't get an ArrayList instance, making this a tristate: 438 * unsupported, supported but not active and active. 439 * 440 * The actual lists are populated when we scan the network types that 441 * are supported on this device. 442 */ 443 private ArrayList<NetworkAgentInfo> mTypeLists[]; 444 445 public LegacyTypeTracker() { 446 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 447 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 448 } 449 450 public void addSupportedType(int type) { 451 if (mTypeLists[type] != null) { 452 throw new IllegalStateException( 453 "legacy list for type " + type + "already initialized"); 454 } 455 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 456 } 457 458 public boolean isTypeSupported(int type) { 459 return isNetworkTypeValid(type) && mTypeLists[type] != null; 460 } 461 462 public NetworkAgentInfo getNetworkForType(int type) { 463 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 464 return mTypeLists[type].get(0); 465 } else { 466 return null; 467 } 468 } 469 470 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type, 471 boolean isDefaultNetwork) { 472 if (DBG) { 473 log("Sending " + (connected ? "connected" : "disconnected") + 474 " broadcast for type " + type + " " + nai.name() + 475 " isDefaultNetwork=" + isDefaultNetwork); 476 } 477 } 478 479 /** Adds the given network to the specified legacy type list. */ 480 public void add(int type, NetworkAgentInfo nai) { 481 if (!isTypeSupported(type)) { 482 return; // Invalid network type. 483 } 484 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 485 486 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 487 if (list.contains(nai)) { 488 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 489 return; 490 } 491 492 list.add(nai); 493 494 // Send a broadcast if this is the first network of its type or if it's the default. 495 final boolean isDefaultNetwork = isDefaultNetwork(nai); 496 if (list.size() == 1 || isDefaultNetwork) { 497 maybeLogBroadcast(nai, true, type, isDefaultNetwork); 498 sendLegacyNetworkBroadcast(nai, true, type); 499 } 500 } 501 502 /** Removes the given network from the specified legacy type list. */ 503 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 504 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 505 if (list == null || list.isEmpty()) { 506 return; 507 } 508 509 final boolean wasFirstNetwork = list.get(0).equals(nai); 510 511 if (!list.remove(nai)) { 512 return; 513 } 514 515 if (wasFirstNetwork || wasDefault) { 516 maybeLogBroadcast(nai, false, type, wasDefault); 517 sendLegacyNetworkBroadcast(nai, false, type); 518 } 519 520 if (!list.isEmpty() && wasFirstNetwork) { 521 if (DBG) log("Other network available for type " + type + 522 ", sending connected broadcast"); 523 final NetworkAgentInfo replacement = list.get(0); 524 maybeLogBroadcast(replacement, false, type, isDefaultNetwork(replacement)); 525 sendLegacyNetworkBroadcast(replacement, false, type); 526 } 527 } 528 529 /** Removes the given network from all legacy type lists. */ 530 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 531 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 532 for (int type = 0; type < mTypeLists.length; type++) { 533 remove(type, nai, wasDefault); 534 } 535 } 536 537 private String naiToString(NetworkAgentInfo nai) { 538 String name = (nai != null) ? nai.name() : "null"; 539 String state = (nai.networkInfo != null) ? 540 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 541 "???/???"; 542 return name + " " + state; 543 } 544 545 public void dump(IndentingPrintWriter pw) { 546 for (int type = 0; type < mTypeLists.length; type++) { 547 if (mTypeLists[type] == null) continue; 548 pw.print(type + " "); 549 pw.increaseIndent(); 550 if (mTypeLists[type].size() == 0) pw.println("none"); 551 for (NetworkAgentInfo nai : mTypeLists[type]) { 552 pw.println(naiToString(nai)); 553 } 554 pw.decreaseIndent(); 555 } 556 } 557 558 // This class needs its own log method because it has a different TAG. 559 private void log(String s) { 560 Slog.d(TAG, s); 561 } 562 563 } 564 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 565 566 public ConnectivityService(Context context, INetworkManagementService netManager, 567 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 568 if (DBG) log("ConnectivityService starting up"); 569 570 mDefaultRequest = createInternetRequestForTransport(-1); 571 mNetworkRequests.put(mDefaultRequest, new NetworkRequestInfo( 572 null, mDefaultRequest, new Binder(), NetworkRequestInfo.REQUEST)); 573 574 mDefaultMobileDataRequest = createInternetRequestForTransport( 575 NetworkCapabilities.TRANSPORT_CELLULAR); 576 577 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 578 handlerThread.start(); 579 mHandler = new InternalHandler(handlerThread.getLooper()); 580 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 581 582 // setup our unique device name 583 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 584 String id = Settings.Secure.getString(context.getContentResolver(), 585 Settings.Secure.ANDROID_ID); 586 if (id != null && id.length() > 0) { 587 String name = new String("android-").concat(id); 588 SystemProperties.set("net.hostname", name); 589 } 590 } 591 592 // read our default dns server ip 593 String dns = Settings.Global.getString(context.getContentResolver(), 594 Settings.Global.DEFAULT_DNS_SERVER); 595 if (dns == null || dns.length() == 0) { 596 dns = context.getResources().getString( 597 com.android.internal.R.string.config_default_dns_server); 598 } 599 try { 600 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 601 } catch (IllegalArgumentException e) { 602 loge("Error setting defaultDns using " + dns); 603 } 604 605 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 606 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 607 608 mContext = checkNotNull(context, "missing Context"); 609 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 610 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 611 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 612 mKeyStore = KeyStore.getInstance(); 613 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 614 615 try { 616 mPolicyManager.registerListener(mPolicyListener); 617 } catch (RemoteException e) { 618 // ouch, no rules updates means some processes may never get network 619 loge("unable to register INetworkPolicyListener" + e.toString()); 620 } 621 622 final PowerManager powerManager = (PowerManager) context.getSystemService( 623 Context.POWER_SERVICE); 624 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 625 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 626 com.android.internal.R.integer.config_networkTransitionTimeout); 627 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 628 629 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 630 631 // TODO: What is the "correct" way to do determine if this is a wifi only device? 632 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 633 log("wifiOnly=" + wifiOnly); 634 String[] naStrings = context.getResources().getStringArray( 635 com.android.internal.R.array.networkAttributes); 636 for (String naString : naStrings) { 637 try { 638 NetworkConfig n = new NetworkConfig(naString); 639 if (VDBG) log("naString=" + naString + " config=" + n); 640 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 641 loge("Error in networkAttributes - ignoring attempt to define type " + 642 n.type); 643 continue; 644 } 645 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 646 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 647 n.type); 648 continue; 649 } 650 if (mNetConfigs[n.type] != null) { 651 loge("Error in networkAttributes - ignoring attempt to redefine type " + 652 n.type); 653 continue; 654 } 655 mLegacyTypeTracker.addSupportedType(n.type); 656 657 mNetConfigs[n.type] = n; 658 mNetworksDefined++; 659 } catch(Exception e) { 660 // ignore it - leave the entry null 661 } 662 } 663 664 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 665 if (mNetConfigs[TYPE_VPN] == null) { 666 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 667 // don't need to add TYPE_VPN to mNetConfigs. 668 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 669 mNetworksDefined++; // used only in the log() statement below. 670 } 671 672 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 673 674 mProtectedNetworks = new ArrayList<Integer>(); 675 int[] protectedNetworks = context.getResources().getIntArray( 676 com.android.internal.R.array.config_protectedNetworks); 677 for (int p : protectedNetworks) { 678 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 679 mProtectedNetworks.add(p); 680 } else { 681 if (DBG) loge("Ignoring protectedNetwork " + p); 682 } 683 } 684 685 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 686 && SystemProperties.get("ro.build.type").equals("eng"); 687 688 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 689 690 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 691 692 //set up the listener for user state for creating user VPNs 693 IntentFilter intentFilter = new IntentFilter(); 694 intentFilter.addAction(Intent.ACTION_USER_STARTING); 695 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 696 mContext.registerReceiverAsUser( 697 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 698 699 try { 700 mNetd.registerObserver(mTethering); 701 mNetd.registerObserver(mDataActivityObserver); 702 } catch (RemoteException e) { 703 loge("Error registering observer :" + e); 704 } 705 706 if (DBG) { 707 mInetLog = new ArrayList(); 708 } 709 710 mSettingsObserver = new SettingsObserver(mContext, mHandler); 711 registerSettingsCallbacks(); 712 713 mDataConnectionStats = new DataConnectionStats(mContext); 714 mDataConnectionStats.startMonitoring(); 715 716 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 717 718 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 719 } 720 721 private NetworkRequest createInternetRequestForTransport(int transportType) { 722 NetworkCapabilities netCap = new NetworkCapabilities(); 723 netCap.addCapability(NET_CAPABILITY_INTERNET); 724 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 725 if (transportType > -1) { 726 netCap.addTransportType(transportType); 727 } 728 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 729 } 730 731 private void handleMobileDataAlwaysOn() { 732 final boolean enable = (Settings.Global.getInt( 733 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 734 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 735 if (enable == isEnabled) { 736 return; // Nothing to do. 737 } 738 739 if (enable) { 740 handleRegisterNetworkRequest(new NetworkRequestInfo( 741 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestInfo.REQUEST)); 742 } else { 743 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 744 } 745 } 746 747 private void registerSettingsCallbacks() { 748 // Watch for global HTTP proxy changes. 749 mSettingsObserver.observe( 750 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 751 EVENT_APPLY_GLOBAL_HTTP_PROXY); 752 753 // Watch for whether or not to keep mobile data always on. 754 mSettingsObserver.observe( 755 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 756 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 757 } 758 759 private synchronized int nextNetworkRequestId() { 760 return mNextNetworkRequestId++; 761 } 762 763 private int reserveNetId() { 764 synchronized (mNetworkForNetId) { 765 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 766 int netId = mNextNetId; 767 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 768 // Make sure NetID unused. http://b/16815182 769 if (!mNetIdInUse.get(netId)) { 770 mNetIdInUse.put(netId, true); 771 return netId; 772 } 773 } 774 } 775 throw new IllegalStateException("No free netIds"); 776 } 777 778 private NetworkState getFilteredNetworkState(int networkType, int uid) { 779 NetworkInfo info = null; 780 LinkProperties lp = null; 781 NetworkCapabilities nc = null; 782 Network network = null; 783 String subscriberId = null; 784 785 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 786 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 787 if (nai != null) { 788 synchronized (nai) { 789 info = new NetworkInfo(nai.networkInfo); 790 lp = new LinkProperties(nai.linkProperties); 791 nc = new NetworkCapabilities(nai.networkCapabilities); 792 // Network objects are outwardly immutable so there is no point to duplicating. 793 // Duplicating also precludes sharing socket factories and connection pools. 794 network = nai.network; 795 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 796 } 797 info.setType(networkType); 798 } else { 799 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 800 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 801 info.setIsAvailable(true); 802 lp = new LinkProperties(); 803 nc = new NetworkCapabilities(); 804 network = null; 805 } 806 info = getFilteredNetworkInfo(info, lp, uid); 807 } 808 809 return new NetworkState(info, lp, nc, network, subscriberId, null); 810 } 811 812 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 813 if (network == null) { 814 return null; 815 } 816 synchronized (mNetworkForNetId) { 817 return mNetworkForNetId.get(network.netId); 818 } 819 }; 820 821 private Network[] getVpnUnderlyingNetworks(int uid) { 822 if (!mLockdownEnabled) { 823 int user = UserHandle.getUserId(uid); 824 synchronized (mVpns) { 825 Vpn vpn = mVpns.get(user); 826 if (vpn != null && vpn.appliesToUid(uid)) { 827 return vpn.getUnderlyingNetworks(); 828 } 829 } 830 } 831 return null; 832 } 833 834 private NetworkState getUnfilteredActiveNetworkState(int uid) { 835 NetworkInfo info = null; 836 LinkProperties lp = null; 837 NetworkCapabilities nc = null; 838 Network network = null; 839 String subscriberId = null; 840 841 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 842 843 final Network[] networks = getVpnUnderlyingNetworks(uid); 844 if (networks != null) { 845 // getUnderlyingNetworks() returns: 846 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 847 // empty array => the VPN explicitly said "no default network". 848 // non-empty array => the VPN specified one or more default networks; we use the 849 // first one. 850 if (networks.length > 0) { 851 nai = getNetworkAgentInfoForNetwork(networks[0]); 852 } else { 853 nai = null; 854 } 855 } 856 857 if (nai != null) { 858 synchronized (nai) { 859 info = new NetworkInfo(nai.networkInfo); 860 lp = new LinkProperties(nai.linkProperties); 861 nc = new NetworkCapabilities(nai.networkCapabilities); 862 // Network objects are outwardly immutable so there is no point to duplicating. 863 // Duplicating also precludes sharing socket factories and connection pools. 864 network = nai.network; 865 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 866 } 867 } 868 869 return new NetworkState(info, lp, nc, network, subscriberId, null); 870 } 871 872 /** 873 * Check if UID should be blocked from using the network with the given LinkProperties. 874 */ 875 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 876 final boolean networkCostly; 877 final int uidRules; 878 879 final String iface = (lp == null ? "" : lp.getInterfaceName()); 880 synchronized (mRulesLock) { 881 networkCostly = mMeteredIfaces.contains(iface); 882 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 883 } 884 885 if ((uidRules & RULE_REJECT_ALL) != 0 886 || (networkCostly && (uidRules & RULE_REJECT_METERED) != 0)) { 887 return true; 888 } 889 890 // no restrictive rules; network is visible 891 return false; 892 } 893 894 /** 895 * Return a filtered {@link NetworkInfo}, potentially marked 896 * {@link DetailedState#BLOCKED} based on 897 * {@link #isNetworkWithLinkPropertiesBlocked}. 898 */ 899 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 900 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 901 // network is blocked; clone and override state 902 info = new NetworkInfo(info); 903 info.setDetailedState(DetailedState.BLOCKED, null, null); 904 if (DBG) { 905 log("returning Blocked NetworkInfo for ifname=" + 906 lp.getInterfaceName() + ", uid=" + uid); 907 } 908 } 909 if (info != null && mLockdownTracker != null) { 910 info = mLockdownTracker.augmentNetworkInfo(info); 911 if (DBG) log("returning Locked NetworkInfo"); 912 } 913 return info; 914 } 915 916 /** 917 * Return NetworkInfo for the active (i.e., connected) network interface. 918 * It is assumed that at most one network is active at a time. If more 919 * than one is active, it is indeterminate which will be returned. 920 * @return the info for the active network, or {@code null} if none is 921 * active 922 */ 923 @Override 924 public NetworkInfo getActiveNetworkInfo() { 925 enforceAccessPermission(); 926 final int uid = Binder.getCallingUid(); 927 NetworkState state = getUnfilteredActiveNetworkState(uid); 928 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 929 } 930 931 @Override 932 public Network getActiveNetwork() { 933 enforceAccessPermission(); 934 final int uid = Binder.getCallingUid(); 935 final int user = UserHandle.getUserId(uid); 936 int vpnNetId = NETID_UNSET; 937 synchronized (mVpns) { 938 final Vpn vpn = mVpns.get(user); 939 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 940 } 941 NetworkAgentInfo nai; 942 if (vpnNetId != NETID_UNSET) { 943 synchronized (mNetworkForNetId) { 944 nai = mNetworkForNetId.get(vpnNetId); 945 } 946 if (nai != null) return nai.network; 947 } 948 nai = getDefaultNetwork(); 949 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 950 return nai != null ? nai.network : null; 951 } 952 953 /** 954 * Find the first Provisioning network. 955 * 956 * @return NetworkInfo or null if none. 957 */ 958 private NetworkInfo getProvisioningNetworkInfo() { 959 enforceAccessPermission(); 960 961 // Find the first Provisioning Network 962 NetworkInfo provNi = null; 963 for (NetworkInfo ni : getAllNetworkInfo()) { 964 if (ni.isConnectedToProvisioningNetwork()) { 965 provNi = ni; 966 break; 967 } 968 } 969 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 970 return provNi; 971 } 972 973 /** 974 * Find the first Provisioning network or the ActiveDefaultNetwork 975 * if there is no Provisioning network 976 * 977 * @return NetworkInfo or null if none. 978 */ 979 @Override 980 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 981 enforceAccessPermission(); 982 983 NetworkInfo provNi = getProvisioningNetworkInfo(); 984 if (provNi == null) { 985 provNi = getActiveNetworkInfo(); 986 } 987 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 988 return provNi; 989 } 990 991 public NetworkInfo getActiveNetworkInfoUnfiltered() { 992 enforceAccessPermission(); 993 final int uid = Binder.getCallingUid(); 994 NetworkState state = getUnfilteredActiveNetworkState(uid); 995 return state.networkInfo; 996 } 997 998 @Override 999 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1000 enforceConnectivityInternalPermission(); 1001 NetworkState state = getUnfilteredActiveNetworkState(uid); 1002 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1003 } 1004 1005 @Override 1006 public NetworkInfo getNetworkInfo(int networkType) { 1007 enforceAccessPermission(); 1008 final int uid = Binder.getCallingUid(); 1009 if (getVpnUnderlyingNetworks(uid) != null) { 1010 // A VPN is active, so we may need to return one of its underlying networks. This 1011 // information is not available in LegacyTypeTracker, so we have to get it from 1012 // getUnfilteredActiveNetworkState. 1013 NetworkState state = getUnfilteredActiveNetworkState(uid); 1014 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1015 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1016 } 1017 } 1018 NetworkState state = getFilteredNetworkState(networkType, uid); 1019 return state.networkInfo; 1020 } 1021 1022 @Override 1023 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1024 enforceAccessPermission(); 1025 final int uid = Binder.getCallingUid(); 1026 NetworkInfo info = null; 1027 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1028 if (nai != null) { 1029 synchronized (nai) { 1030 info = new NetworkInfo(nai.networkInfo); 1031 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1032 } 1033 } 1034 return info; 1035 } 1036 1037 @Override 1038 public NetworkInfo[] getAllNetworkInfo() { 1039 enforceAccessPermission(); 1040 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1041 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1042 networkType++) { 1043 NetworkInfo info = getNetworkInfo(networkType); 1044 if (info != null) { 1045 result.add(info); 1046 } 1047 } 1048 return result.toArray(new NetworkInfo[result.size()]); 1049 } 1050 1051 @Override 1052 public Network getNetworkForType(int networkType) { 1053 enforceAccessPermission(); 1054 final int uid = Binder.getCallingUid(); 1055 NetworkState state = getFilteredNetworkState(networkType, uid); 1056 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1057 return state.network; 1058 } 1059 return null; 1060 } 1061 1062 @Override 1063 public Network[] getAllNetworks() { 1064 enforceAccessPermission(); 1065 synchronized (mNetworkForNetId) { 1066 final Network[] result = new Network[mNetworkForNetId.size()]; 1067 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1068 result[i] = mNetworkForNetId.valueAt(i).network; 1069 } 1070 return result; 1071 } 1072 } 1073 1074 private NetworkCapabilities getNetworkCapabilitiesAndValidation(NetworkAgentInfo nai) { 1075 if (nai != null) { 1076 synchronized (nai) { 1077 if (nai.created) { 1078 NetworkCapabilities nc = new NetworkCapabilities(nai.networkCapabilities); 1079 if (nai.lastValidated) { 1080 nc.addCapability(NET_CAPABILITY_VALIDATED); 1081 } else { 1082 nc.removeCapability(NET_CAPABILITY_VALIDATED); 1083 } 1084 return nc; 1085 } 1086 } 1087 } 1088 return null; 1089 } 1090 1091 @Override 1092 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1093 // The basic principle is: if an app's traffic could possibly go over a 1094 // network, without the app doing anything multinetwork-specific, 1095 // (hence, by "default"), then include that network's capabilities in 1096 // the array. 1097 // 1098 // In the normal case, app traffic only goes over the system's default 1099 // network connection, so that's the only network returned. 1100 // 1101 // With a VPN in force, some app traffic may go into the VPN, and thus 1102 // over whatever underlying networks the VPN specifies, while other app 1103 // traffic may go over the system default network (e.g.: a split-tunnel 1104 // VPN, or an app disallowed by the VPN), so the set of networks 1105 // returned includes the VPN's underlying networks and the system 1106 // default. 1107 enforceAccessPermission(); 1108 1109 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1110 1111 NetworkAgentInfo nai = getDefaultNetwork(); 1112 NetworkCapabilities nc = getNetworkCapabilitiesAndValidation(getDefaultNetwork()); 1113 if (nc != null) { 1114 result.put(nai.network, nc); 1115 } 1116 1117 if (!mLockdownEnabled) { 1118 synchronized (mVpns) { 1119 Vpn vpn = mVpns.get(userId); 1120 if (vpn != null) { 1121 Network[] networks = vpn.getUnderlyingNetworks(); 1122 if (networks != null) { 1123 for (Network network : networks) { 1124 nai = getNetworkAgentInfoForNetwork(network); 1125 nc = getNetworkCapabilitiesAndValidation(nai); 1126 if (nc != null) { 1127 result.put(nai.network, nc); 1128 } 1129 } 1130 } 1131 } 1132 } 1133 } 1134 1135 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1136 out = result.values().toArray(out); 1137 return out; 1138 } 1139 1140 @Override 1141 public boolean isNetworkSupported(int networkType) { 1142 enforceAccessPermission(); 1143 return mLegacyTypeTracker.isTypeSupported(networkType); 1144 } 1145 1146 /** 1147 * Return LinkProperties for the active (i.e., connected) default 1148 * network interface. It is assumed that at most one default network 1149 * is active at a time. If more than one is active, it is indeterminate 1150 * which will be returned. 1151 * @return the ip properties for the active network, or {@code null} if 1152 * none is active 1153 */ 1154 @Override 1155 public LinkProperties getActiveLinkProperties() { 1156 enforceAccessPermission(); 1157 final int uid = Binder.getCallingUid(); 1158 NetworkState state = getUnfilteredActiveNetworkState(uid); 1159 return state.linkProperties; 1160 } 1161 1162 @Override 1163 public LinkProperties getLinkPropertiesForType(int networkType) { 1164 enforceAccessPermission(); 1165 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1166 if (nai != null) { 1167 synchronized (nai) { 1168 return new LinkProperties(nai.linkProperties); 1169 } 1170 } 1171 return null; 1172 } 1173 1174 // TODO - this should be ALL networks 1175 @Override 1176 public LinkProperties getLinkProperties(Network network) { 1177 enforceAccessPermission(); 1178 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1179 if (nai != null) { 1180 synchronized (nai) { 1181 return new LinkProperties(nai.linkProperties); 1182 } 1183 } 1184 return null; 1185 } 1186 1187 @Override 1188 public NetworkCapabilities getNetworkCapabilities(Network network) { 1189 enforceAccessPermission(); 1190 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1191 if (nai != null) { 1192 synchronized (nai) { 1193 NetworkCapabilities nc = new NetworkCapabilities(nai.networkCapabilities); 1194 if (nai.lastValidated) { 1195 nc.addCapability(NET_CAPABILITY_VALIDATED); 1196 } else { 1197 nc.removeCapability(NET_CAPABILITY_VALIDATED); 1198 } 1199 return nc; 1200 } 1201 } 1202 return null; 1203 } 1204 1205 @Override 1206 public NetworkState[] getAllNetworkState() { 1207 // Require internal since we're handing out IMSI details 1208 enforceConnectivityInternalPermission(); 1209 1210 final ArrayList<NetworkState> result = Lists.newArrayList(); 1211 for (Network network : getAllNetworks()) { 1212 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1213 if (nai != null) { 1214 synchronized (nai) { 1215 final String subscriberId = (nai.networkMisc != null) 1216 ? nai.networkMisc.subscriberId : null; 1217 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1218 nai.networkCapabilities, network, subscriberId, null)); 1219 } 1220 } 1221 } 1222 return result.toArray(new NetworkState[result.size()]); 1223 } 1224 1225 @Override 1226 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1227 enforceAccessPermission(); 1228 final int uid = Binder.getCallingUid(); 1229 final long token = Binder.clearCallingIdentity(); 1230 try { 1231 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1232 if (state.networkInfo != null) { 1233 try { 1234 return mPolicyManager.getNetworkQuotaInfo(state); 1235 } catch (RemoteException e) { 1236 } 1237 } 1238 return null; 1239 } finally { 1240 Binder.restoreCallingIdentity(token); 1241 } 1242 } 1243 1244 @Override 1245 public boolean isActiveNetworkMetered() { 1246 enforceAccessPermission(); 1247 final int uid = Binder.getCallingUid(); 1248 final long token = Binder.clearCallingIdentity(); 1249 try { 1250 return isActiveNetworkMeteredUnchecked(uid); 1251 } finally { 1252 Binder.restoreCallingIdentity(token); 1253 } 1254 } 1255 1256 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1257 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1258 if (state.networkInfo != null) { 1259 try { 1260 return mPolicyManager.isNetworkMetered(state); 1261 } catch (RemoteException e) { 1262 } 1263 } 1264 return false; 1265 } 1266 1267 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1268 @Override 1269 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1270 int deviceType = Integer.parseInt(label); 1271 sendDataActivityBroadcast(deviceType, active, tsNanos); 1272 } 1273 }; 1274 1275 /** 1276 * Ensure that a network route exists to deliver traffic to the specified 1277 * host via the specified network interface. 1278 * @param networkType the type of the network over which traffic to the 1279 * specified host is to be routed 1280 * @param hostAddress the IP address of the host to which the route is 1281 * desired 1282 * @return {@code true} on success, {@code false} on failure 1283 */ 1284 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1285 enforceChangePermission(); 1286 if (mProtectedNetworks.contains(networkType)) { 1287 enforceConnectivityInternalPermission(); 1288 } 1289 1290 InetAddress addr; 1291 try { 1292 addr = InetAddress.getByAddress(hostAddress); 1293 } catch (UnknownHostException e) { 1294 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1295 return false; 1296 } 1297 1298 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1299 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1300 return false; 1301 } 1302 1303 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1304 if (nai == null) { 1305 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1306 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1307 } else { 1308 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1309 } 1310 return false; 1311 } 1312 1313 DetailedState netState; 1314 synchronized (nai) { 1315 netState = nai.networkInfo.getDetailedState(); 1316 } 1317 1318 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1319 if (VDBG) { 1320 log("requestRouteToHostAddress on down network " 1321 + "(" + networkType + ") - dropped" 1322 + " netState=" + netState); 1323 } 1324 return false; 1325 } 1326 1327 final int uid = Binder.getCallingUid(); 1328 final long token = Binder.clearCallingIdentity(); 1329 try { 1330 LinkProperties lp; 1331 int netId; 1332 synchronized (nai) { 1333 lp = nai.linkProperties; 1334 netId = nai.network.netId; 1335 } 1336 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1337 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1338 return ok; 1339 } finally { 1340 Binder.restoreCallingIdentity(token); 1341 } 1342 } 1343 1344 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1345 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1346 if (bestRoute == null) { 1347 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1348 } else { 1349 String iface = bestRoute.getInterface(); 1350 if (bestRoute.getGateway().equals(addr)) { 1351 // if there is no better route, add the implied hostroute for our gateway 1352 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1353 } else { 1354 // if we will connect to this through another route, add a direct route 1355 // to it's gateway 1356 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1357 } 1358 } 1359 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1360 try { 1361 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1362 } catch (Exception e) { 1363 // never crash - catch them all 1364 if (DBG) loge("Exception trying to add a route: " + e); 1365 return false; 1366 } 1367 return true; 1368 } 1369 1370 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1371 @Override 1372 public void onUidRulesChanged(int uid, int uidRules) { 1373 // caller is NPMS, since we only register with them 1374 if (LOGD_RULES) { 1375 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1376 } 1377 1378 synchronized (mRulesLock) { 1379 // skip update when we've already applied rules 1380 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1381 if (oldRules == uidRules) return; 1382 1383 mUidRules.put(uid, uidRules); 1384 } 1385 1386 // TODO: notify UID when it has requested targeted updates 1387 } 1388 1389 @Override 1390 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1391 // caller is NPMS, since we only register with them 1392 if (LOGD_RULES) { 1393 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1394 } 1395 1396 synchronized (mRulesLock) { 1397 mMeteredIfaces.clear(); 1398 for (String iface : meteredIfaces) { 1399 mMeteredIfaces.add(iface); 1400 } 1401 } 1402 } 1403 1404 @Override 1405 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1406 // caller is NPMS, since we only register with them 1407 if (LOGD_RULES) { 1408 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1409 } 1410 } 1411 }; 1412 1413 /** 1414 * Require that the caller is either in the same user or has appropriate permission to interact 1415 * across users. 1416 * 1417 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1418 */ 1419 private void enforceCrossUserPermission(int userId) { 1420 if (userId == UserHandle.getCallingUserId()) { 1421 // Not a cross-user call. 1422 return; 1423 } 1424 mContext.enforceCallingOrSelfPermission( 1425 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1426 "ConnectivityService"); 1427 } 1428 1429 private void enforceInternetPermission() { 1430 mContext.enforceCallingOrSelfPermission( 1431 android.Manifest.permission.INTERNET, 1432 "ConnectivityService"); 1433 } 1434 1435 private void enforceAccessPermission() { 1436 mContext.enforceCallingOrSelfPermission( 1437 android.Manifest.permission.ACCESS_NETWORK_STATE, 1438 "ConnectivityService"); 1439 } 1440 1441 private void enforceChangePermission() { 1442 mContext.enforceCallingOrSelfPermission( 1443 android.Manifest.permission.CHANGE_NETWORK_STATE, 1444 "ConnectivityService"); 1445 } 1446 1447 private void enforceTetherAccessPermission() { 1448 mContext.enforceCallingOrSelfPermission( 1449 android.Manifest.permission.ACCESS_NETWORK_STATE, 1450 "ConnectivityService"); 1451 } 1452 1453 private void enforceConnectivityInternalPermission() { 1454 mContext.enforceCallingOrSelfPermission( 1455 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1456 "ConnectivityService"); 1457 } 1458 1459 public void sendConnectedBroadcast(NetworkInfo info) { 1460 enforceConnectivityInternalPermission(); 1461 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1462 } 1463 1464 private void sendInetConditionBroadcast(NetworkInfo info) { 1465 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1466 } 1467 1468 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1469 if (mLockdownTracker != null) { 1470 info = mLockdownTracker.augmentNetworkInfo(info); 1471 } 1472 1473 Intent intent = new Intent(bcastType); 1474 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1475 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1476 if (info.isFailover()) { 1477 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1478 info.setFailover(false); 1479 } 1480 if (info.getReason() != null) { 1481 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1482 } 1483 if (info.getExtraInfo() != null) { 1484 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1485 info.getExtraInfo()); 1486 } 1487 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1488 return intent; 1489 } 1490 1491 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1492 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1493 } 1494 1495 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1496 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1497 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1498 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1499 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1500 final long ident = Binder.clearCallingIdentity(); 1501 try { 1502 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1503 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1504 } finally { 1505 Binder.restoreCallingIdentity(ident); 1506 } 1507 } 1508 1509 private void sendStickyBroadcast(Intent intent) { 1510 synchronized(this) { 1511 if (!mSystemReady) { 1512 mInitialBroadcast = new Intent(intent); 1513 } 1514 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1515 if (DBG) { 1516 log("sendStickyBroadcast: action=" + intent.getAction()); 1517 } 1518 1519 final long ident = Binder.clearCallingIdentity(); 1520 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1521 final IBatteryStats bs = BatteryStatsService.getService(); 1522 try { 1523 NetworkInfo ni = intent.getParcelableExtra( 1524 ConnectivityManager.EXTRA_NETWORK_INFO); 1525 bs.noteConnectivityChanged(intent.getIntExtra( 1526 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1527 ni != null ? ni.getState().toString() : "?"); 1528 } catch (RemoteException e) { 1529 } 1530 } 1531 try { 1532 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1533 } finally { 1534 Binder.restoreCallingIdentity(ident); 1535 } 1536 } 1537 } 1538 1539 void systemReady() { 1540 loadGlobalProxy(); 1541 1542 synchronized(this) { 1543 mSystemReady = true; 1544 if (mInitialBroadcast != null) { 1545 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1546 mInitialBroadcast = null; 1547 } 1548 } 1549 // load the global proxy at startup 1550 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1551 1552 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1553 // for user to unlock device. 1554 if (!updateLockdownVpn()) { 1555 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1556 mContext.registerReceiver(mUserPresentReceiver, filter); 1557 } 1558 1559 // Configure whether mobile data is always on. 1560 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1561 1562 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1563 1564 mPermissionMonitor.startMonitoring(); 1565 } 1566 1567 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1568 @Override 1569 public void onReceive(Context context, Intent intent) { 1570 // Try creating lockdown tracker, since user present usually means 1571 // unlocked keystore. 1572 if (updateLockdownVpn()) { 1573 mContext.unregisterReceiver(this); 1574 } 1575 } 1576 }; 1577 1578 /** @hide */ 1579 @Override 1580 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1581 enforceConnectivityInternalPermission(); 1582 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1583// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 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 5); 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 5); 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 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 (DBG) 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 1676 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1677 if (isDefaultNetwork(nai) == false) { 1678 return; 1679 } 1680 1681 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1682 String[] values = null; 1683 if (tcpBufferSizes != null) { 1684 values = tcpBufferSizes.split(","); 1685 } 1686 1687 if (values == null || values.length != 6) { 1688 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1689 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1690 values = tcpBufferSizes.split(","); 1691 } 1692 1693 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1694 1695 try { 1696 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1697 1698 final String prefix = "/sys/kernel/ipv4/tcp_"; 1699 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1700 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1701 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1702 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1703 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1704 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1705 mCurrentTcpBufferSizes = tcpBufferSizes; 1706 } catch (IOException e) { 1707 loge("Can't set TCP buffer sizes:" + e); 1708 } 1709 1710 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 1711 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 1712 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1713 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 1714 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1715 if (rwndValue != 0) { 1716 SystemProperties.set(sysctlKey, rwndValue.toString()); 1717 } 1718 } 1719 1720 private void flushVmDnsCache() { 1721 /* 1722 * Tell the VMs to toss their DNS caches 1723 */ 1724 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1725 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1726 /* 1727 * Connectivity events can happen before boot has completed ... 1728 */ 1729 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1730 final long ident = Binder.clearCallingIdentity(); 1731 try { 1732 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1733 } finally { 1734 Binder.restoreCallingIdentity(ident); 1735 } 1736 } 1737 1738 @Override 1739 public int getRestoreDefaultNetworkDelay(int networkType) { 1740 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1741 NETWORK_RESTORE_DELAY_PROP_NAME); 1742 if(restoreDefaultNetworkDelayStr != null && 1743 restoreDefaultNetworkDelayStr.length() != 0) { 1744 try { 1745 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1746 } catch (NumberFormatException e) { 1747 } 1748 } 1749 // if the system property isn't set, use the value for the apn type 1750 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1751 1752 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1753 (mNetConfigs[networkType] != null)) { 1754 ret = mNetConfigs[networkType].restoreTime; 1755 } 1756 return ret; 1757 } 1758 1759 @Override 1760 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1761 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1762 if (mContext.checkCallingOrSelfPermission( 1763 android.Manifest.permission.DUMP) 1764 != PackageManager.PERMISSION_GRANTED) { 1765 pw.println("Permission Denial: can't dump ConnectivityService " + 1766 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1767 Binder.getCallingUid()); 1768 return; 1769 } 1770 1771 pw.println("NetworkFactories for:"); 1772 pw.increaseIndent(); 1773 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1774 pw.println(nfi.name); 1775 } 1776 pw.decreaseIndent(); 1777 pw.println(); 1778 1779 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1780 pw.print("Active default network: "); 1781 if (defaultNai == null) { 1782 pw.println("none"); 1783 } else { 1784 pw.println(defaultNai.network.netId); 1785 } 1786 pw.println(); 1787 1788 pw.println("Current Networks:"); 1789 pw.increaseIndent(); 1790 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1791 pw.println(nai.toString()); 1792 pw.increaseIndent(); 1793 pw.println("Requests:"); 1794 pw.increaseIndent(); 1795 for (int i = 0; i < nai.networkRequests.size(); i++) { 1796 pw.println(nai.networkRequests.valueAt(i).toString()); 1797 } 1798 pw.decreaseIndent(); 1799 pw.println("Lingered:"); 1800 pw.increaseIndent(); 1801 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1802 pw.decreaseIndent(); 1803 pw.decreaseIndent(); 1804 } 1805 pw.decreaseIndent(); 1806 pw.println(); 1807 1808 pw.println("Network Requests:"); 1809 pw.increaseIndent(); 1810 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1811 pw.println(nri.toString()); 1812 } 1813 pw.println(); 1814 pw.decreaseIndent(); 1815 1816 pw.println("mLegacyTypeTracker:"); 1817 pw.increaseIndent(); 1818 mLegacyTypeTracker.dump(pw); 1819 pw.decreaseIndent(); 1820 pw.println(); 1821 1822 synchronized (this) { 1823 pw.println("NetworkTransitionWakeLock is currently " + 1824 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 1825 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 1826 } 1827 pw.println(); 1828 1829 mTethering.dump(fd, pw, args); 1830 1831 if (mInetLog != null) { 1832 pw.println(); 1833 pw.println("Inet condition reports:"); 1834 pw.increaseIndent(); 1835 for(int i = 0; i < mInetLog.size(); i++) { 1836 pw.println(mInetLog.get(i)); 1837 } 1838 pw.decreaseIndent(); 1839 } 1840 } 1841 1842 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1843 if (nai.network == null) return false; 1844 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1845 if (officialNai != null && officialNai.equals(nai)) return true; 1846 if (officialNai != null || VDBG) { 1847 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1848 " - " + nai); 1849 } 1850 return false; 1851 } 1852 1853 private boolean isRequest(NetworkRequest request) { 1854 return mNetworkRequests.get(request).isRequest; 1855 } 1856 1857 // must be stateless - things change under us. 1858 private class NetworkStateTrackerHandler extends Handler { 1859 public NetworkStateTrackerHandler(Looper looper) { 1860 super(looper); 1861 } 1862 1863 @Override 1864 public void handleMessage(Message msg) { 1865 NetworkInfo info; 1866 switch (msg.what) { 1867 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1868 handleAsyncChannelHalfConnect(msg); 1869 break; 1870 } 1871 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1872 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1873 if (nai != null) nai.asyncChannel.disconnect(); 1874 break; 1875 } 1876 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1877 handleAsyncChannelDisconnected(msg); 1878 break; 1879 } 1880 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1881 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1882 if (nai == null) { 1883 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1884 } else { 1885 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1886 } 1887 break; 1888 } 1889 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1890 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1891 if (nai == null) { 1892 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1893 } else { 1894 if (VDBG) { 1895 log("Update of LinkProperties for " + nai.name() + 1896 "; created=" + nai.created); 1897 } 1898 LinkProperties oldLp = nai.linkProperties; 1899 synchronized (nai) { 1900 nai.linkProperties = (LinkProperties)msg.obj; 1901 } 1902 if (nai.created) updateLinkProperties(nai, oldLp); 1903 } 1904 break; 1905 } 1906 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1907 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1908 if (nai == null) { 1909 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1910 break; 1911 } 1912 info = (NetworkInfo) msg.obj; 1913 updateNetworkInfo(nai, info); 1914 break; 1915 } 1916 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1917 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1918 if (nai == null) { 1919 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1920 break; 1921 } 1922 Integer score = (Integer) msg.obj; 1923 if (score != null) updateNetworkScore(nai, score.intValue()); 1924 break; 1925 } 1926 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1927 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1928 if (nai == null) { 1929 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1930 break; 1931 } 1932 try { 1933 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1934 } catch (Exception e) { 1935 // Never crash! 1936 loge("Exception in addVpnUidRanges: " + e); 1937 } 1938 break; 1939 } 1940 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1941 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1942 if (nai == null) { 1943 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1944 break; 1945 } 1946 try { 1947 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1948 } catch (Exception e) { 1949 // Never crash! 1950 loge("Exception in removeVpnUidRanges: " + e); 1951 } 1952 break; 1953 } 1954 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1955 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1956 if (nai == null) { 1957 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1958 break; 1959 } 1960 if (nai.created && !nai.networkMisc.explicitlySelected) { 1961 loge("ERROR: created network explicitly selected."); 1962 } 1963 nai.networkMisc.explicitlySelected = true; 1964 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 1965 break; 1966 } 1967 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1968 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1969 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_VALIDATED")) { 1970 boolean valid = (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1971 nai.lastValidated = valid; 1972 if (valid) { 1973 if (DBG) log("Validated " + nai.name()); 1974 if (!nai.everValidated) { 1975 nai.everValidated = true; 1976 rematchNetworkAndRequests(nai, NascentState.JUST_VALIDATED, 1977 ReapUnvalidatedNetworks.REAP); 1978 // If score has changed, rebroadcast to NetworkFactories. b/17726566 1979 sendUpdatedScoreToFactories(nai); 1980 } 1981 } 1982 updateInetCondition(nai); 1983 // Let the NetworkAgent know the state of its network 1984 nai.asyncChannel.sendMessage( 1985 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 1986 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 1987 0, null); 1988 1989 // TODO: trigger a NetworkCapabilities update so that the dialog can know 1990 // that the network is now validated and close itself. 1991 } 1992 break; 1993 } 1994 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 1995 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1996 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 1997 handleLingerComplete(nai); 1998 } 1999 break; 2000 } 2001 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2002 if (msg.arg1 == 0) { 2003 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 2004 } else { 2005 final NetworkAgentInfo nai; 2006 synchronized (mNetworkForNetId) { 2007 nai = mNetworkForNetId.get(msg.arg2); 2008 } 2009 if (nai == null) { 2010 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2011 break; 2012 } 2013 nai.captivePortalDetected = true; 2014 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 2015 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 2016 } 2017 break; 2018 } 2019 } 2020 } 2021 } 2022 2023 // Cancel any lingering so the linger timeout doesn't teardown a network. 2024 // This should be called when a network begins satisfying a NetworkRequest. 2025 // Note: depending on what state the NetworkMonitor is in (e.g., 2026 // if it's awaiting captive portal login, or if validation failed), this 2027 // may trigger a re-evaluation of the network. 2028 private void unlinger(NetworkAgentInfo nai) { 2029 if (VDBG) log("Canceling linger of " + nai.name()); 2030 // If network has never been validated, it cannot have been lingered, so don't bother 2031 // needlessly triggering a re-evaluation. 2032 if (!nai.everValidated) return; 2033 nai.networkLingered.clear(); 2034 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2035 } 2036 2037 private void handleAsyncChannelHalfConnect(Message msg) { 2038 AsyncChannel ac = (AsyncChannel) msg.obj; 2039 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2040 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2041 if (VDBG) log("NetworkFactory connected"); 2042 // A network factory has connected. Send it all current NetworkRequests. 2043 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2044 if (nri.isRequest == false) continue; 2045 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2046 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2047 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2048 } 2049 } else { 2050 loge("Error connecting NetworkFactory"); 2051 mNetworkFactoryInfos.remove(msg.obj); 2052 } 2053 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2054 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2055 if (VDBG) log("NetworkAgent connected"); 2056 // A network agent has requested a connection. Establish the connection. 2057 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2058 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2059 } else { 2060 loge("Error connecting NetworkAgent"); 2061 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2062 if (nai != null) { 2063 final boolean wasDefault = isDefaultNetwork(nai); 2064 synchronized (mNetworkForNetId) { 2065 mNetworkForNetId.remove(nai.network.netId); 2066 mNetIdInUse.delete(nai.network.netId); 2067 } 2068 // Just in case. 2069 mLegacyTypeTracker.remove(nai, wasDefault); 2070 } 2071 } 2072 } 2073 } 2074 2075 private void handleAsyncChannelDisconnected(Message msg) { 2076 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2077 if (nai != null) { 2078 if (DBG) { 2079 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2080 } 2081 // A network agent has disconnected. 2082 if (nai.created) { 2083 // Tell netd to clean up the configuration for this network 2084 // (routing rules, DNS, etc). 2085 try { 2086 mNetd.removeNetwork(nai.network.netId); 2087 } catch (Exception e) { 2088 loge("Exception removing network: " + e); 2089 } 2090 } 2091 // TODO - if we move the logic to the network agent (have them disconnect 2092 // because they lost all their requests or because their score isn't good) 2093 // then they would disconnect organically, report their new state and then 2094 // disconnect the channel. 2095 if (nai.networkInfo.isConnected()) { 2096 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2097 null, null); 2098 } 2099 final boolean wasDefault = isDefaultNetwork(nai); 2100 if (wasDefault) { 2101 mDefaultInetConditionPublished = 0; 2102 } 2103 notifyIfacesChanged(); 2104 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2105 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2106 mNetworkAgentInfos.remove(msg.replyTo); 2107 updateClat(null, nai.linkProperties, nai); 2108 synchronized (mNetworkForNetId) { 2109 mNetworkForNetId.remove(nai.network.netId); 2110 mNetIdInUse.delete(nai.network.netId); 2111 } 2112 // Since we've lost the network, go through all the requests that 2113 // it was satisfying and see if any other factory can satisfy them. 2114 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2115 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2116 for (int i = 0; i < nai.networkRequests.size(); i++) { 2117 NetworkRequest request = nai.networkRequests.valueAt(i); 2118 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2119 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2120 if (DBG) { 2121 log("Checking for replacement network to handle request " + request ); 2122 } 2123 mNetworkForRequestId.remove(request.requestId); 2124 sendUpdatedScoreToFactories(request, 0); 2125 NetworkAgentInfo alternative = null; 2126 for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) { 2127 if (existing.satisfies(request) && 2128 (alternative == null || 2129 alternative.getCurrentScore() < existing.getCurrentScore())) { 2130 alternative = existing; 2131 } 2132 } 2133 if (alternative != null) { 2134 if (DBG) log(" found replacement in " + alternative.name()); 2135 if (!toActivate.contains(alternative)) { 2136 toActivate.add(alternative); 2137 } 2138 } 2139 } 2140 } 2141 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2142 removeDataActivityTracking(nai); 2143 notifyLockdownVpn(nai); 2144 requestNetworkTransitionWakelock(nai.name()); 2145 } 2146 mLegacyTypeTracker.remove(nai, wasDefault); 2147 for (NetworkAgentInfo networkToActivate : toActivate) { 2148 unlinger(networkToActivate); 2149 rematchNetworkAndRequests(networkToActivate, NascentState.NOT_JUST_VALIDATED, 2150 ReapUnvalidatedNetworks.DONT_REAP); 2151 } 2152 } 2153 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2154 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2155 } 2156 2157 // If this method proves to be too slow then we can maintain a separate 2158 // pendingIntent => NetworkRequestInfo map. 2159 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2160 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2161 Intent intent = pendingIntent.getIntent(); 2162 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2163 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2164 if (existingPendingIntent != null && 2165 existingPendingIntent.getIntent().filterEquals(intent)) { 2166 return entry.getValue(); 2167 } 2168 } 2169 return null; 2170 } 2171 2172 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2173 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2174 2175 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2176 if (existingRequest != null) { // remove the existing request. 2177 if (DBG) log("Replacing " + existingRequest.request + " with " 2178 + nri.request + " because their intents matched."); 2179 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2180 } 2181 handleRegisterNetworkRequest(nri); 2182 } 2183 2184 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2185 mNetworkRequests.put(nri.request, nri); 2186 2187 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2188 2189 // Check for the best currently alive network that satisfies this request 2190 NetworkAgentInfo bestNetwork = null; 2191 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2192 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2193 if (network.satisfies(nri.request)) { 2194 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2195 if (!nri.isRequest) { 2196 // Not setting bestNetwork here as a listening NetworkRequest may be 2197 // satisfied by multiple Networks. Instead the request is added to 2198 // each satisfying Network and notified about each. 2199 network.addRequest(nri.request); 2200 notifyNetworkCallback(network, nri); 2201 } else if (bestNetwork == null || 2202 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2203 bestNetwork = network; 2204 } 2205 } 2206 } 2207 if (bestNetwork != null) { 2208 if (DBG) log("using " + bestNetwork.name()); 2209 unlinger(bestNetwork); 2210 bestNetwork.addRequest(nri.request); 2211 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2212 notifyNetworkCallback(bestNetwork, nri); 2213 if (nri.request.legacyType != TYPE_NONE) { 2214 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2215 } 2216 } 2217 2218 if (nri.isRequest) { 2219 if (DBG) log("sending new NetworkRequest to factories"); 2220 final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore(); 2221 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2222 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2223 0, nri.request); 2224 } 2225 } 2226 } 2227 2228 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2229 int callingUid) { 2230 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2231 if (nri != null) { 2232 handleReleaseNetworkRequest(nri.request, callingUid); 2233 } 2234 } 2235 2236 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2237 // For validated Networks this is simply whether it is satsifying any NetworkRequests. 2238 // For unvalidated Networks this is whether it is satsifying any NetworkRequests or 2239 // were it to become validated, would it have a chance of satisfying any NetworkRequests. 2240 private boolean unneeded(NetworkAgentInfo nai) { 2241 if (!nai.created || nai.isVPN()) return false; 2242 boolean unneeded = true; 2243 if (nai.everValidated) { 2244 for (int i = 0; i < nai.networkRequests.size() && unneeded; i++) { 2245 final NetworkRequest nr = nai.networkRequests.valueAt(i); 2246 try { 2247 if (isRequest(nr)) unneeded = false; 2248 } catch (Exception e) { 2249 loge("Request " + nr + " not found in mNetworkRequests."); 2250 loge(" it came from request list of " + nai.name()); 2251 } 2252 } 2253 } else { 2254 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2255 // If this Network is already the highest scoring Network for a request, or if 2256 // there is hope for it to become one if it validated, then it is needed. 2257 if (nri.isRequest && nai.satisfies(nri.request) && 2258 (nai.networkRequests.get(nri.request.requestId) != null || 2259 // Note that this catches two important cases: 2260 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2261 // is currently satisfying the request. This is desirable when 2262 // cellular ends up validating but WiFi does not. 2263 // 2. Unvalidated WiFi will not be reaped when validated cellular 2264 // is currently satsifying the request. This is desirable when 2265 // WiFi ends up validating and out scoring cellular. 2266 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2267 nai.getCurrentScoreAsValidated())) { 2268 unneeded = false; 2269 break; 2270 } 2271 } 2272 } 2273 return unneeded; 2274 } 2275 2276 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2277 NetworkRequestInfo nri = mNetworkRequests.get(request); 2278 if (nri != null) { 2279 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2280 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2281 return; 2282 } 2283 if (DBG) log("releasing NetworkRequest " + request); 2284 nri.unlinkDeathRecipient(); 2285 mNetworkRequests.remove(request); 2286 if (nri.isRequest) { 2287 // Find all networks that are satisfying this request and remove the request 2288 // from their request lists. 2289 // TODO - it's my understanding that for a request there is only a single 2290 // network satisfying it, so this loop is wasteful 2291 boolean wasKept = false; 2292 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2293 if (nai.networkRequests.get(nri.request.requestId) != null) { 2294 nai.networkRequests.remove(nri.request.requestId); 2295 if (DBG) { 2296 log(" Removing from current network " + nai.name() + 2297 ", leaving " + nai.networkRequests.size() + 2298 " requests."); 2299 } 2300 if (unneeded(nai)) { 2301 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2302 teardownUnneededNetwork(nai); 2303 } else { 2304 // suspect there should only be one pass through here 2305 // but if any were kept do the check below 2306 wasKept |= true; 2307 } 2308 } 2309 } 2310 2311 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2312 if (nai != null) { 2313 mNetworkForRequestId.remove(nri.request.requestId); 2314 } 2315 // Maintain the illusion. When this request arrived, we might have pretended 2316 // that a network connected to serve it, even though the network was already 2317 // connected. Now that this request has gone away, we might have to pretend 2318 // that the network disconnected. LegacyTypeTracker will generate that 2319 // phantom disconnect for this type. 2320 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2321 boolean doRemove = true; 2322 if (wasKept) { 2323 // check if any of the remaining requests for this network are for the 2324 // same legacy type - if so, don't remove the nai 2325 for (int i = 0; i < nai.networkRequests.size(); i++) { 2326 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2327 if (otherRequest.legacyType == nri.request.legacyType && 2328 isRequest(otherRequest)) { 2329 if (DBG) log(" still have other legacy request - leaving"); 2330 doRemove = false; 2331 } 2332 } 2333 } 2334 2335 if (doRemove) { 2336 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2337 } 2338 } 2339 2340 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2341 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2342 nri.request); 2343 } 2344 } else { 2345 // listens don't have a singular affectedNetwork. Check all networks to see 2346 // if this listen request applies and remove it. 2347 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2348 nai.networkRequests.remove(nri.request.requestId); 2349 } 2350 } 2351 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2352 } 2353 } 2354 2355 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2356 enforceConnectivityInternalPermission(); 2357 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2358 accept ? 1 : 0, always ? 1: 0, network)); 2359 } 2360 2361 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2362 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2363 " accept=" + accept + " always=" + always); 2364 2365 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2366 if (nai == null) { 2367 // Nothing to do. 2368 return; 2369 } 2370 2371 if (nai.everValidated) { 2372 // The network validated while the dialog box was up. Don't make any changes. There's a 2373 // TODO in the dialog code to make it go away if the network validates; once that's 2374 // implemented, taking action here will be confusing. 2375 return; 2376 } 2377 2378 if (!nai.networkMisc.explicitlySelected) { 2379 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2380 } 2381 2382 if (accept != nai.networkMisc.acceptUnvalidated) { 2383 int oldScore = nai.getCurrentScore(); 2384 nai.networkMisc.acceptUnvalidated = accept; 2385 rematchAllNetworksAndRequests(nai, oldScore); 2386 sendUpdatedScoreToFactories(nai); 2387 } 2388 2389 if (always) { 2390 nai.asyncChannel.sendMessage( 2391 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2392 } 2393 2394 // TODO: should we also disconnect from the network if accept is false? 2395 } 2396 2397 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2398 mHandler.sendMessageDelayed( 2399 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2400 PROMPT_UNVALIDATED_DELAY_MS); 2401 } 2402 2403 private void handlePromptUnvalidated(Network network) { 2404 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2405 2406 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2407 // we haven't already been told to switch to it regardless of whether it validated or not. 2408 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2409 if (nai == null || nai.everValidated || nai.captivePortalDetected || 2410 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2411 return; 2412 } 2413 2414 // TODO: What should we do if we've already switched to this network because we had no 2415 // better option? There are two obvious alternatives. 2416 // 2417 // 1. Decide that there's no point prompting because this is our only usable network. 2418 // However, because we didn't prompt, if later on a validated network comes along, we'll 2419 // either a) silently switch to it - bad if the user wanted to connect to stay on this 2420 // unvalidated network - or b) prompt the user at that later time - bad because the user 2421 // might not understand why they are now being prompted. 2422 // 2423 // 2. Always prompt the user, even if we have no other network to use. The user could then 2424 // try to find an alternative network to join (remember, if we got here, then the user 2425 // selected this network manually). This is bad because the prompt isn't really very 2426 // useful. 2427 // 2428 // For now we do #1, but we can revisit that later. 2429 if (isDefaultNetwork(nai)) { 2430 return; 2431 } 2432 2433 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2434 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, network); 2435 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2436 intent.setClassName("com.android.settings", 2437 "com.android.settings.wifi.WifiNoInternetDialog"); 2438 mContext.startActivityAsUser(intent, UserHandle.CURRENT); 2439 } 2440 2441 private class InternalHandler extends Handler { 2442 public InternalHandler(Looper looper) { 2443 super(looper); 2444 } 2445 2446 @Override 2447 public void handleMessage(Message msg) { 2448 switch (msg.what) { 2449 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2450 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2451 String causedBy = null; 2452 synchronized (ConnectivityService.this) { 2453 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2454 mNetTransitionWakeLock.isHeld()) { 2455 mNetTransitionWakeLock.release(); 2456 causedBy = mNetTransitionWakeLockCausedBy; 2457 } else { 2458 break; 2459 } 2460 } 2461 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2462 log("Failed to find a new network - expiring NetTransition Wakelock"); 2463 } else { 2464 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2465 " cleared because we found a replacement network"); 2466 } 2467 break; 2468 } 2469 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2470 handleDeprecatedGlobalHttpProxy(); 2471 break; 2472 } 2473 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2474 Intent intent = (Intent)msg.obj; 2475 sendStickyBroadcast(intent); 2476 break; 2477 } 2478 case EVENT_PROXY_HAS_CHANGED: { 2479 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2480 break; 2481 } 2482 case EVENT_REGISTER_NETWORK_FACTORY: { 2483 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2484 break; 2485 } 2486 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2487 handleUnregisterNetworkFactory((Messenger)msg.obj); 2488 break; 2489 } 2490 case EVENT_REGISTER_NETWORK_AGENT: { 2491 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2492 break; 2493 } 2494 case EVENT_REGISTER_NETWORK_REQUEST: 2495 case EVENT_REGISTER_NETWORK_LISTENER: { 2496 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2497 break; 2498 } 2499 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: { 2500 handleRegisterNetworkRequestWithIntent(msg); 2501 break; 2502 } 2503 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2504 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2505 break; 2506 } 2507 case EVENT_RELEASE_NETWORK_REQUEST: { 2508 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2509 break; 2510 } 2511 case EVENT_SET_ACCEPT_UNVALIDATED: { 2512 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2513 break; 2514 } 2515 case EVENT_PROMPT_UNVALIDATED: { 2516 handlePromptUnvalidated((Network) msg.obj); 2517 break; 2518 } 2519 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2520 handleMobileDataAlwaysOn(); 2521 break; 2522 } 2523 case EVENT_SYSTEM_READY: { 2524 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2525 nai.networkMonitor.systemReady = true; 2526 } 2527 break; 2528 } 2529 } 2530 } 2531 } 2532 2533 // javadoc from interface 2534 public int tether(String iface) { 2535 ConnectivityManager.enforceTetherChangePermission(mContext); 2536 if (isTetheringSupported()) { 2537 return mTethering.tether(iface); 2538 } else { 2539 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2540 } 2541 } 2542 2543 // javadoc from interface 2544 public int untether(String iface) { 2545 ConnectivityManager.enforceTetherChangePermission(mContext); 2546 2547 if (isTetheringSupported()) { 2548 return mTethering.untether(iface); 2549 } else { 2550 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2551 } 2552 } 2553 2554 // javadoc from interface 2555 public int getLastTetherError(String iface) { 2556 enforceTetherAccessPermission(); 2557 2558 if (isTetheringSupported()) { 2559 return mTethering.getLastTetherError(iface); 2560 } else { 2561 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2562 } 2563 } 2564 2565 // TODO - proper iface API for selection by property, inspection, etc 2566 public String[] getTetherableUsbRegexs() { 2567 enforceTetherAccessPermission(); 2568 if (isTetheringSupported()) { 2569 return mTethering.getTetherableUsbRegexs(); 2570 } else { 2571 return new String[0]; 2572 } 2573 } 2574 2575 public String[] getTetherableWifiRegexs() { 2576 enforceTetherAccessPermission(); 2577 if (isTetheringSupported()) { 2578 return mTethering.getTetherableWifiRegexs(); 2579 } else { 2580 return new String[0]; 2581 } 2582 } 2583 2584 public String[] getTetherableBluetoothRegexs() { 2585 enforceTetherAccessPermission(); 2586 if (isTetheringSupported()) { 2587 return mTethering.getTetherableBluetoothRegexs(); 2588 } else { 2589 return new String[0]; 2590 } 2591 } 2592 2593 public int setUsbTethering(boolean enable) { 2594 ConnectivityManager.enforceTetherChangePermission(mContext); 2595 if (isTetheringSupported()) { 2596 return mTethering.setUsbTethering(enable); 2597 } else { 2598 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2599 } 2600 } 2601 2602 // TODO - move iface listing, queries, etc to new module 2603 // javadoc from interface 2604 public String[] getTetherableIfaces() { 2605 enforceTetherAccessPermission(); 2606 return mTethering.getTetherableIfaces(); 2607 } 2608 2609 public String[] getTetheredIfaces() { 2610 enforceTetherAccessPermission(); 2611 return mTethering.getTetheredIfaces(); 2612 } 2613 2614 public String[] getTetheringErroredIfaces() { 2615 enforceTetherAccessPermission(); 2616 return mTethering.getErroredIfaces(); 2617 } 2618 2619 public String[] getTetheredDhcpRanges() { 2620 enforceConnectivityInternalPermission(); 2621 return mTethering.getTetheredDhcpRanges(); 2622 } 2623 2624 // if ro.tether.denied = true we default to no tethering 2625 // gservices could set the secure setting to 1 though to enable it on a build where it 2626 // had previously been turned off. 2627 public boolean isTetheringSupported() { 2628 enforceTetherAccessPermission(); 2629 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2630 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2631 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2632 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2633 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2634 mTethering.getTetherableWifiRegexs().length != 0 || 2635 mTethering.getTetherableBluetoothRegexs().length != 0) && 2636 mTethering.getUpstreamIfaceTypes().length != 0); 2637 } 2638 2639 // Called when we lose the default network and have no replacement yet. 2640 // This will automatically be cleared after X seconds or a new default network 2641 // becomes CONNECTED, whichever happens first. The timer is started by the 2642 // first caller and not restarted by subsequent callers. 2643 private void requestNetworkTransitionWakelock(String forWhom) { 2644 int serialNum = 0; 2645 synchronized (this) { 2646 if (mNetTransitionWakeLock.isHeld()) return; 2647 serialNum = ++mNetTransitionWakeLockSerialNumber; 2648 mNetTransitionWakeLock.acquire(); 2649 mNetTransitionWakeLockCausedBy = forWhom; 2650 } 2651 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2652 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2653 mNetTransitionWakeLockTimeout); 2654 return; 2655 } 2656 2657 // 100 percent is full good, 0 is full bad. 2658 public void reportInetCondition(int networkType, int percentage) { 2659 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2660 if (nai == null) return; 2661 reportNetworkConnectivity(nai.network, percentage > 50); 2662 } 2663 2664 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2665 enforceAccessPermission(); 2666 enforceInternetPermission(); 2667 2668 NetworkAgentInfo nai; 2669 if (network == null) { 2670 nai = getDefaultNetwork(); 2671 } else { 2672 nai = getNetworkAgentInfoForNetwork(network); 2673 } 2674 if (nai == null) return; 2675 // Revalidate if the app report does not match our current validated state. 2676 if (hasConnectivity == nai.lastValidated) return; 2677 final int uid = Binder.getCallingUid(); 2678 if (DBG) { 2679 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2680 ") by " + uid); 2681 } 2682 synchronized (nai) { 2683 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2684 // which isn't meant to work on uncreated networks. 2685 if (!nai.created) return; 2686 2687 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2688 2689 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2690 } 2691 } 2692 2693 public void captivePortalAppResponse(Network network, int response, String actionToken) { 2694 if (response == ConnectivityManager.CAPTIVE_PORTAL_APP_RETURN_WANTED_AS_IS) { 2695 enforceConnectivityInternalPermission(); 2696 } 2697 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2698 if (nai == null) return; 2699 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_CAPTIVE_PORTAL_APP_FINISHED, response, 0, 2700 actionToken); 2701 } 2702 2703 public ProxyInfo getDefaultProxy() { 2704 // this information is already available as a world read/writable jvm property 2705 // so this API change wouldn't have a benifit. It also breaks the passing 2706 // of proxy info to all the JVMs. 2707 // enforceAccessPermission(); 2708 synchronized (mProxyLock) { 2709 ProxyInfo ret = mGlobalProxy; 2710 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2711 return ret; 2712 } 2713 } 2714 2715 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2716 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2717 // proxy is null then there is no proxy in place). 2718 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2719 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2720 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2721 proxy = null; 2722 } 2723 return proxy; 2724 } 2725 2726 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2727 // better for determining if a new proxy broadcast is necessary: 2728 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2729 // avoid unnecessary broadcasts. 2730 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2731 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2732 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2733 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2734 // all set. 2735 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2736 a = canonicalizeProxyInfo(a); 2737 b = canonicalizeProxyInfo(b); 2738 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2739 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2740 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2741 } 2742 2743 public void setGlobalProxy(ProxyInfo proxyProperties) { 2744 enforceConnectivityInternalPermission(); 2745 2746 synchronized (mProxyLock) { 2747 if (proxyProperties == mGlobalProxy) return; 2748 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2749 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2750 2751 String host = ""; 2752 int port = 0; 2753 String exclList = ""; 2754 String pacFileUrl = ""; 2755 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2756 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2757 if (!proxyProperties.isValid()) { 2758 if (DBG) 2759 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2760 return; 2761 } 2762 mGlobalProxy = new ProxyInfo(proxyProperties); 2763 host = mGlobalProxy.getHost(); 2764 port = mGlobalProxy.getPort(); 2765 exclList = mGlobalProxy.getExclusionListAsString(); 2766 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2767 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2768 } 2769 } else { 2770 mGlobalProxy = null; 2771 } 2772 ContentResolver res = mContext.getContentResolver(); 2773 final long token = Binder.clearCallingIdentity(); 2774 try { 2775 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2776 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2777 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2778 exclList); 2779 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2780 } finally { 2781 Binder.restoreCallingIdentity(token); 2782 } 2783 2784 if (mGlobalProxy == null) { 2785 proxyProperties = mDefaultProxy; 2786 } 2787 sendProxyBroadcast(proxyProperties); 2788 } 2789 } 2790 2791 private void loadGlobalProxy() { 2792 ContentResolver res = mContext.getContentResolver(); 2793 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2794 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2795 String exclList = Settings.Global.getString(res, 2796 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2797 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2798 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2799 ProxyInfo proxyProperties; 2800 if (!TextUtils.isEmpty(pacFileUrl)) { 2801 proxyProperties = new ProxyInfo(pacFileUrl); 2802 } else { 2803 proxyProperties = new ProxyInfo(host, port, exclList); 2804 } 2805 if (!proxyProperties.isValid()) { 2806 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2807 return; 2808 } 2809 2810 synchronized (mProxyLock) { 2811 mGlobalProxy = proxyProperties; 2812 } 2813 } 2814 } 2815 2816 public ProxyInfo getGlobalProxy() { 2817 // this information is already available as a world read/writable jvm property 2818 // so this API change wouldn't have a benifit. It also breaks the passing 2819 // of proxy info to all the JVMs. 2820 // enforceAccessPermission(); 2821 synchronized (mProxyLock) { 2822 return mGlobalProxy; 2823 } 2824 } 2825 2826 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2827 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2828 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2829 proxy = null; 2830 } 2831 synchronized (mProxyLock) { 2832 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2833 if (mDefaultProxy == proxy) return; // catches repeated nulls 2834 if (proxy != null && !proxy.isValid()) { 2835 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2836 return; 2837 } 2838 2839 // This call could be coming from the PacManager, containing the port of the local 2840 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2841 // global (to get the correct local port), and send a broadcast. 2842 // TODO: Switch PacManager to have its own message to send back rather than 2843 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2844 if ((mGlobalProxy != null) && (proxy != null) 2845 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2846 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2847 mGlobalProxy = proxy; 2848 sendProxyBroadcast(mGlobalProxy); 2849 return; 2850 } 2851 mDefaultProxy = proxy; 2852 2853 if (mGlobalProxy != null) return; 2854 if (!mDefaultProxyDisabled) { 2855 sendProxyBroadcast(proxy); 2856 } 2857 } 2858 } 2859 2860 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2861 // This method gets called when any network changes proxy, but the broadcast only ever contains 2862 // the default proxy (even if it hasn't changed). 2863 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2864 // world where an app might be bound to a non-default network. 2865 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2866 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2867 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2868 2869 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2870 sendProxyBroadcast(getDefaultProxy()); 2871 } 2872 } 2873 2874 private void handleDeprecatedGlobalHttpProxy() { 2875 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2876 Settings.Global.HTTP_PROXY); 2877 if (!TextUtils.isEmpty(proxy)) { 2878 String data[] = proxy.split(":"); 2879 if (data.length == 0) { 2880 return; 2881 } 2882 2883 String proxyHost = data[0]; 2884 int proxyPort = 8080; 2885 if (data.length > 1) { 2886 try { 2887 proxyPort = Integer.parseInt(data[1]); 2888 } catch (NumberFormatException e) { 2889 return; 2890 } 2891 } 2892 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2893 setGlobalProxy(p); 2894 } 2895 } 2896 2897 private void sendProxyBroadcast(ProxyInfo proxy) { 2898 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2899 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2900 if (DBG) log("sending Proxy Broadcast for " + proxy); 2901 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2902 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2903 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2904 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2905 final long ident = Binder.clearCallingIdentity(); 2906 try { 2907 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2908 } finally { 2909 Binder.restoreCallingIdentity(ident); 2910 } 2911 } 2912 2913 private static class SettingsObserver extends ContentObserver { 2914 final private HashMap<Uri, Integer> mUriEventMap; 2915 final private Context mContext; 2916 final private Handler mHandler; 2917 2918 SettingsObserver(Context context, Handler handler) { 2919 super(null); 2920 mUriEventMap = new HashMap<Uri, Integer>(); 2921 mContext = context; 2922 mHandler = handler; 2923 } 2924 2925 void observe(Uri uri, int what) { 2926 mUriEventMap.put(uri, what); 2927 final ContentResolver resolver = mContext.getContentResolver(); 2928 resolver.registerContentObserver(uri, false, this); 2929 } 2930 2931 @Override 2932 public void onChange(boolean selfChange) { 2933 Slog.wtf(TAG, "Should never be reached."); 2934 } 2935 2936 @Override 2937 public void onChange(boolean selfChange, Uri uri) { 2938 final Integer what = mUriEventMap.get(uri); 2939 if (what != null) { 2940 mHandler.obtainMessage(what.intValue()).sendToTarget(); 2941 } else { 2942 loge("No matching event to send for URI=" + uri); 2943 } 2944 } 2945 } 2946 2947 private static void log(String s) { 2948 Slog.d(TAG, s); 2949 } 2950 2951 private static void loge(String s) { 2952 Slog.e(TAG, s); 2953 } 2954 2955 private static <T> T checkNotNull(T value, String message) { 2956 if (value == null) { 2957 throw new NullPointerException(message); 2958 } 2959 return value; 2960 } 2961 2962 /** 2963 * Prepare for a VPN application. 2964 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 2965 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 2966 * 2967 * @param oldPackage Package name of the application which currently controls VPN, which will 2968 * be replaced. If there is no such application, this should should either be 2969 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 2970 * @param newPackage Package name of the application which should gain control of VPN, or 2971 * {@code null} to disable. 2972 * @param userId User for whom to prepare the new VPN. 2973 * 2974 * @hide 2975 */ 2976 @Override 2977 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 2978 int userId) { 2979 enforceCrossUserPermission(userId); 2980 throwIfLockdownEnabled(); 2981 2982 synchronized(mVpns) { 2983 return mVpns.get(userId).prepare(oldPackage, newPackage); 2984 } 2985 } 2986 2987 /** 2988 * Set whether the VPN package has the ability to launch VPNs without user intervention. 2989 * This method is used by system-privileged apps. 2990 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 2991 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 2992 * 2993 * @param packageName The package for which authorization state should change. 2994 * @param userId User for whom {@code packageName} is installed. 2995 * @param authorized {@code true} if this app should be able to start a VPN connection without 2996 * explicit user approval, {@code false} if not. 2997 * 2998 * @hide 2999 */ 3000 @Override 3001 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3002 enforceCrossUserPermission(userId); 3003 3004 synchronized(mVpns) { 3005 mVpns.get(userId).setPackageAuthorization(packageName, authorized); 3006 } 3007 } 3008 3009 /** 3010 * Configure a TUN interface and return its file descriptor. Parameters 3011 * are encoded and opaque to this class. This method is used by VpnBuilder 3012 * and not available in ConnectivityManager. Permissions are checked in 3013 * Vpn class. 3014 * @hide 3015 */ 3016 @Override 3017 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3018 throwIfLockdownEnabled(); 3019 int user = UserHandle.getUserId(Binder.getCallingUid()); 3020 synchronized(mVpns) { 3021 return mVpns.get(user).establish(config); 3022 } 3023 } 3024 3025 /** 3026 * Start legacy VPN, controlling native daemons as needed. Creates a 3027 * secondary thread to perform connection work, returning quickly. 3028 */ 3029 @Override 3030 public void startLegacyVpn(VpnProfile profile) { 3031 throwIfLockdownEnabled(); 3032 final LinkProperties egress = getActiveLinkProperties(); 3033 if (egress == null) { 3034 throw new IllegalStateException("Missing active network connection"); 3035 } 3036 int user = UserHandle.getUserId(Binder.getCallingUid()); 3037 synchronized(mVpns) { 3038 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3039 } 3040 } 3041 3042 /** 3043 * Return the information of the ongoing legacy VPN. This method is used 3044 * by VpnSettings and not available in ConnectivityManager. Permissions 3045 * are checked in Vpn class. 3046 */ 3047 @Override 3048 public LegacyVpnInfo getLegacyVpnInfo() { 3049 throwIfLockdownEnabled(); 3050 int user = UserHandle.getUserId(Binder.getCallingUid()); 3051 synchronized(mVpns) { 3052 return mVpns.get(user).getLegacyVpnInfo(); 3053 } 3054 } 3055 3056 /** 3057 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3058 * and not available in ConnectivityManager. 3059 */ 3060 @Override 3061 public VpnInfo[] getAllVpnInfo() { 3062 enforceConnectivityInternalPermission(); 3063 if (mLockdownEnabled) { 3064 return new VpnInfo[0]; 3065 } 3066 3067 synchronized(mVpns) { 3068 List<VpnInfo> infoList = new ArrayList<>(); 3069 for (int i = 0; i < mVpns.size(); i++) { 3070 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3071 if (info != null) { 3072 infoList.add(info); 3073 } 3074 } 3075 return infoList.toArray(new VpnInfo[infoList.size()]); 3076 } 3077 } 3078 3079 /** 3080 * @return VPN information for accounting, or null if we can't retrieve all required 3081 * information, e.g primary underlying iface. 3082 */ 3083 @Nullable 3084 private VpnInfo createVpnInfo(Vpn vpn) { 3085 VpnInfo info = vpn.getVpnInfo(); 3086 if (info == null) { 3087 return null; 3088 } 3089 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3090 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3091 // the underlyingNetworks list. 3092 if (underlyingNetworks == null) { 3093 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3094 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3095 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3096 } 3097 } else if (underlyingNetworks.length > 0) { 3098 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3099 if (linkProperties != null) { 3100 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3101 } 3102 } 3103 return info.primaryUnderlyingIface == null ? null : info; 3104 } 3105 3106 /** 3107 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3108 * VpnDialogs and not available in ConnectivityManager. 3109 * Permissions are checked in Vpn class. 3110 * @hide 3111 */ 3112 @Override 3113 public VpnConfig getVpnConfig(int userId) { 3114 enforceCrossUserPermission(userId); 3115 synchronized(mVpns) { 3116 return mVpns.get(userId).getVpnConfig(); 3117 } 3118 } 3119 3120 @Override 3121 public boolean updateLockdownVpn() { 3122 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3123 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3124 return false; 3125 } 3126 3127 // Tear down existing lockdown if profile was removed 3128 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3129 if (mLockdownEnabled) { 3130 if (!mKeyStore.isUnlocked()) { 3131 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3132 return false; 3133 } 3134 3135 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3136 final VpnProfile profile = VpnProfile.decode( 3137 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3138 int user = UserHandle.getUserId(Binder.getCallingUid()); 3139 synchronized(mVpns) { 3140 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3141 profile)); 3142 } 3143 } else { 3144 setLockdownTracker(null); 3145 } 3146 3147 return true; 3148 } 3149 3150 /** 3151 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3152 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3153 */ 3154 private void setLockdownTracker(LockdownVpnTracker tracker) { 3155 // Shutdown any existing tracker 3156 final LockdownVpnTracker existing = mLockdownTracker; 3157 mLockdownTracker = null; 3158 if (existing != null) { 3159 existing.shutdown(); 3160 } 3161 3162 try { 3163 if (tracker != null) { 3164 mNetd.setFirewallEnabled(true); 3165 mNetd.setFirewallInterfaceRule("lo", true); 3166 mLockdownTracker = tracker; 3167 mLockdownTracker.init(); 3168 } else { 3169 mNetd.setFirewallEnabled(false); 3170 } 3171 } catch (RemoteException e) { 3172 // ignored; NMS lives inside system_server 3173 } 3174 } 3175 3176 private void throwIfLockdownEnabled() { 3177 if (mLockdownEnabled) { 3178 throw new IllegalStateException("Unavailable in lockdown mode"); 3179 } 3180 } 3181 3182 @Override 3183 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3184 // TODO: Remove? Any reason to trigger a provisioning check? 3185 return -1; 3186 } 3187 3188 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3189 private volatile boolean mIsNotificationVisible = false; 3190 3191 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3192 if (DBG) { 3193 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3194 + " action=" + action); 3195 } 3196 Intent intent = new Intent(action); 3197 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3198 // Concatenate the range of types onto the range of NetIDs. 3199 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3200 setProvNotificationVisibleIntent(visible, id, networkType, null, pendingIntent); 3201 } 3202 3203 /** 3204 * Show or hide network provisioning notificaitons. 3205 * 3206 * @param id an identifier that uniquely identifies this notification. This must match 3207 * between show and hide calls. We use the NetID value but for legacy callers 3208 * we concatenate the range of types with the range of NetIDs. 3209 */ 3210 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 3211 String extraInfo, PendingIntent intent) { 3212 if (DBG) { 3213 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 3214 networkType + " extraInfo=" + extraInfo); 3215 } 3216 3217 Resources r = Resources.getSystem(); 3218 NotificationManager notificationManager = (NotificationManager) mContext 3219 .getSystemService(Context.NOTIFICATION_SERVICE); 3220 3221 if (visible) { 3222 CharSequence title; 3223 CharSequence details; 3224 int icon; 3225 Notification notification = new Notification(); 3226 switch (networkType) { 3227 case ConnectivityManager.TYPE_WIFI: 3228 title = r.getString(R.string.wifi_available_sign_in, 0); 3229 details = r.getString(R.string.network_available_sign_in_detailed, 3230 extraInfo); 3231 icon = R.drawable.stat_notify_wifi_in_range; 3232 break; 3233 case ConnectivityManager.TYPE_MOBILE: 3234 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3235 title = r.getString(R.string.network_available_sign_in, 0); 3236 // TODO: Change this to pull from NetworkInfo once a printable 3237 // name has been added to it 3238 details = mTelephonyManager.getNetworkOperatorName(); 3239 icon = R.drawable.stat_notify_rssi_in_range; 3240 break; 3241 default: 3242 title = r.getString(R.string.network_available_sign_in, 0); 3243 details = r.getString(R.string.network_available_sign_in_detailed, 3244 extraInfo); 3245 icon = R.drawable.stat_notify_rssi_in_range; 3246 break; 3247 } 3248 3249 notification.when = 0; 3250 notification.icon = icon; 3251 notification.flags = Notification.FLAG_AUTO_CANCEL; 3252 notification.tickerText = title; 3253 notification.color = mContext.getColor( 3254 com.android.internal.R.color.system_notification_accent_color); 3255 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3256 notification.contentIntent = intent; 3257 3258 try { 3259 notificationManager.notify(NOTIFICATION_ID, id, notification); 3260 } catch (NullPointerException npe) { 3261 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 3262 npe.printStackTrace(); 3263 } 3264 } else { 3265 try { 3266 notificationManager.cancel(NOTIFICATION_ID, id); 3267 } catch (NullPointerException npe) { 3268 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 3269 npe.printStackTrace(); 3270 } 3271 } 3272 mIsNotificationVisible = visible; 3273 } 3274 3275 /** Location to an updatable file listing carrier provisioning urls. 3276 * An example: 3277 * 3278 * <?xml version="1.0" encoding="utf-8"?> 3279 * <provisioningUrls> 3280 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3281 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3282 * </provisioningUrls> 3283 */ 3284 private static final String PROVISIONING_URL_PATH = 3285 "/data/misc/radio/provisioning_urls.xml"; 3286 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3287 3288 /** XML tag for root element. */ 3289 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3290 /** XML tag for individual url */ 3291 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3292 /** XML tag for redirected url */ 3293 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3294 /** XML attribute for mcc */ 3295 private static final String ATTR_MCC = "mcc"; 3296 /** XML attribute for mnc */ 3297 private static final String ATTR_MNC = "mnc"; 3298 3299 private static final int REDIRECTED_PROVISIONING = 1; 3300 private static final int PROVISIONING = 2; 3301 3302 private String getProvisioningUrlBaseFromFile(int type) { 3303 FileReader fileReader = null; 3304 XmlPullParser parser = null; 3305 Configuration config = mContext.getResources().getConfiguration(); 3306 String tagType; 3307 3308 switch (type) { 3309 case PROVISIONING: 3310 tagType = TAG_PROVISIONING_URL; 3311 break; 3312 case REDIRECTED_PROVISIONING: 3313 tagType = TAG_REDIRECTED_URL; 3314 break; 3315 default: 3316 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3317 type); 3318 } 3319 3320 try { 3321 fileReader = new FileReader(mProvisioningUrlFile); 3322 parser = Xml.newPullParser(); 3323 parser.setInput(fileReader); 3324 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3325 3326 while (true) { 3327 XmlUtils.nextElement(parser); 3328 3329 String element = parser.getName(); 3330 if (element == null) break; 3331 3332 if (element.equals(tagType)) { 3333 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3334 try { 3335 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3336 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3337 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3338 parser.next(); 3339 if (parser.getEventType() == XmlPullParser.TEXT) { 3340 return parser.getText(); 3341 } 3342 } 3343 } 3344 } catch (NumberFormatException e) { 3345 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3346 } 3347 } 3348 } 3349 return null; 3350 } catch (FileNotFoundException e) { 3351 loge("Carrier Provisioning Urls file not found"); 3352 } catch (XmlPullParserException e) { 3353 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3354 } catch (IOException e) { 3355 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3356 } finally { 3357 if (fileReader != null) { 3358 try { 3359 fileReader.close(); 3360 } catch (IOException e) {} 3361 } 3362 } 3363 return null; 3364 } 3365 3366 @Override 3367 public String getMobileRedirectedProvisioningUrl() { 3368 enforceConnectivityInternalPermission(); 3369 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3370 if (TextUtils.isEmpty(url)) { 3371 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3372 } 3373 return url; 3374 } 3375 3376 @Override 3377 public String getMobileProvisioningUrl() { 3378 enforceConnectivityInternalPermission(); 3379 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3380 if (TextUtils.isEmpty(url)) { 3381 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3382 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3383 } else { 3384 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3385 } 3386 // populate the iccid, imei and phone number in the provisioning url. 3387 if (!TextUtils.isEmpty(url)) { 3388 String phoneNumber = mTelephonyManager.getLine1Number(); 3389 if (TextUtils.isEmpty(phoneNumber)) { 3390 phoneNumber = "0000000000"; 3391 } 3392 url = String.format(url, 3393 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3394 mTelephonyManager.getDeviceId() /* IMEI */, 3395 phoneNumber /* Phone numer */); 3396 } 3397 3398 return url; 3399 } 3400 3401 @Override 3402 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3403 String action) { 3404 enforceConnectivityInternalPermission(); 3405 final long ident = Binder.clearCallingIdentity(); 3406 try { 3407 setProvNotificationVisible(visible, networkType, action); 3408 } finally { 3409 Binder.restoreCallingIdentity(ident); 3410 } 3411 } 3412 3413 @Override 3414 public void setAirplaneMode(boolean enable) { 3415 enforceConnectivityInternalPermission(); 3416 final long ident = Binder.clearCallingIdentity(); 3417 try { 3418 final ContentResolver cr = mContext.getContentResolver(); 3419 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3420 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3421 intent.putExtra("state", enable); 3422 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3423 } finally { 3424 Binder.restoreCallingIdentity(ident); 3425 } 3426 } 3427 3428 private void onUserStart(int userId) { 3429 synchronized(mVpns) { 3430 Vpn userVpn = mVpns.get(userId); 3431 if (userVpn != null) { 3432 loge("Starting user already has a VPN"); 3433 return; 3434 } 3435 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3436 mVpns.put(userId, userVpn); 3437 } 3438 } 3439 3440 private void onUserStop(int userId) { 3441 synchronized(mVpns) { 3442 Vpn userVpn = mVpns.get(userId); 3443 if (userVpn == null) { 3444 loge("Stopping user has no VPN"); 3445 return; 3446 } 3447 mVpns.delete(userId); 3448 } 3449 } 3450 3451 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3452 @Override 3453 public void onReceive(Context context, Intent intent) { 3454 final String action = intent.getAction(); 3455 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3456 if (userId == UserHandle.USER_NULL) return; 3457 3458 if (Intent.ACTION_USER_STARTING.equals(action)) { 3459 onUserStart(userId); 3460 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3461 onUserStop(userId); 3462 } 3463 } 3464 }; 3465 3466 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3467 new HashMap<Messenger, NetworkFactoryInfo>(); 3468 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3469 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3470 3471 private static class NetworkFactoryInfo { 3472 public final String name; 3473 public final Messenger messenger; 3474 public final AsyncChannel asyncChannel; 3475 3476 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3477 this.name = name; 3478 this.messenger = messenger; 3479 this.asyncChannel = asyncChannel; 3480 } 3481 } 3482 3483 /** 3484 * Tracks info about the requester. 3485 * Also used to notice when the calling process dies so we can self-expire 3486 */ 3487 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3488 static final boolean REQUEST = true; 3489 static final boolean LISTEN = false; 3490 3491 final NetworkRequest request; 3492 final PendingIntent mPendingIntent; 3493 boolean mPendingIntentSent; 3494 private final IBinder mBinder; 3495 final int mPid; 3496 final int mUid; 3497 final Messenger messenger; 3498 final boolean isRequest; 3499 3500 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3501 request = r; 3502 mPendingIntent = pi; 3503 messenger = null; 3504 mBinder = null; 3505 mPid = getCallingPid(); 3506 mUid = getCallingUid(); 3507 this.isRequest = isRequest; 3508 } 3509 3510 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3511 super(); 3512 messenger = m; 3513 request = r; 3514 mBinder = binder; 3515 mPid = getCallingPid(); 3516 mUid = getCallingUid(); 3517 this.isRequest = isRequest; 3518 mPendingIntent = null; 3519 3520 try { 3521 mBinder.linkToDeath(this, 0); 3522 } catch (RemoteException e) { 3523 binderDied(); 3524 } 3525 } 3526 3527 void unlinkDeathRecipient() { 3528 if (mBinder != null) { 3529 mBinder.unlinkToDeath(this, 0); 3530 } 3531 } 3532 3533 public void binderDied() { 3534 log("ConnectivityService NetworkRequestInfo binderDied(" + 3535 request + ", " + mBinder + ")"); 3536 releaseNetworkRequest(request); 3537 } 3538 3539 public String toString() { 3540 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3541 mPid + " for " + request + 3542 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3543 } 3544 } 3545 3546 @Override 3547 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3548 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3549 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3550 enforceNetworkRequestPermissions(networkCapabilities); 3551 enforceMeteredApnPolicy(networkCapabilities); 3552 3553 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3554 throw new IllegalArgumentException("Bad timeout specified"); 3555 } 3556 3557 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3558 nextNetworkRequestId()); 3559 if (DBG) log("requestNetwork for " + networkRequest); 3560 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3561 NetworkRequestInfo.REQUEST); 3562 3563 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3564 if (timeoutMs > 0) { 3565 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3566 nri), timeoutMs); 3567 } 3568 return networkRequest; 3569 } 3570 3571 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3572 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) 3573 == false) { 3574 enforceConnectivityInternalPermission(); 3575 } else { 3576 enforceChangePermission(); 3577 } 3578 } 3579 3580 @Override 3581 public boolean requestBandwidthUpdate(Network network) { 3582 enforceAccessPermission(); 3583 NetworkAgentInfo nai = null; 3584 if (network == null) { 3585 return false; 3586 } 3587 synchronized (mNetworkForNetId) { 3588 nai = mNetworkForNetId.get(network.netId); 3589 } 3590 if (nai != null) { 3591 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3592 return true; 3593 } 3594 return false; 3595 } 3596 3597 3598 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3599 // if UID is restricted, don't allow them to bring up metered APNs 3600 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) 3601 == false) { 3602 final int uidRules; 3603 final int uid = Binder.getCallingUid(); 3604 synchronized(mRulesLock) { 3605 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3606 } 3607 if ((uidRules & (RULE_REJECT_METERED | RULE_REJECT_ALL)) != 0) { 3608 // we could silently fail or we can filter the available nets to only give 3609 // them those they have access to. Chose the more useful 3610 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3611 } 3612 } 3613 } 3614 3615 @Override 3616 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3617 PendingIntent operation) { 3618 checkNotNull(operation, "PendingIntent cannot be null."); 3619 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3620 enforceNetworkRequestPermissions(networkCapabilities); 3621 enforceMeteredApnPolicy(networkCapabilities); 3622 3623 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3624 nextNetworkRequestId()); 3625 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3626 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3627 NetworkRequestInfo.REQUEST); 3628 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3629 nri)); 3630 return networkRequest; 3631 } 3632 3633 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3634 mHandler.sendMessageDelayed( 3635 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3636 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3637 } 3638 3639 @Override 3640 public void releasePendingNetworkRequest(PendingIntent operation) { 3641 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3642 getCallingUid(), 0, operation)); 3643 } 3644 3645 // In order to implement the compatibility measure for pre-M apps that call 3646 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3647 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3648 // This ensures it has permission to do so. 3649 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3650 if (nc == null) { 3651 return false; 3652 } 3653 int[] transportTypes = nc.getTransportTypes(); 3654 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3655 return false; 3656 } 3657 try { 3658 mContext.enforceCallingOrSelfPermission( 3659 android.Manifest.permission.ACCESS_WIFI_STATE, 3660 "ConnectivityService"); 3661 } catch (SecurityException e) { 3662 return false; 3663 } 3664 return true; 3665 } 3666 3667 @Override 3668 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3669 Messenger messenger, IBinder binder) { 3670 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3671 enforceAccessPermission(); 3672 } 3673 3674 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3675 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3676 if (DBG) log("listenForNetwork for " + networkRequest); 3677 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3678 NetworkRequestInfo.LISTEN); 3679 3680 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3681 return networkRequest; 3682 } 3683 3684 @Override 3685 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3686 PendingIntent operation) { 3687 } 3688 3689 @Override 3690 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3691 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3692 0, networkRequest)); 3693 } 3694 3695 @Override 3696 public void registerNetworkFactory(Messenger messenger, String name) { 3697 enforceConnectivityInternalPermission(); 3698 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3699 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3700 } 3701 3702 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3703 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3704 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3705 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3706 } 3707 3708 @Override 3709 public void unregisterNetworkFactory(Messenger messenger) { 3710 enforceConnectivityInternalPermission(); 3711 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3712 } 3713 3714 private void handleUnregisterNetworkFactory(Messenger messenger) { 3715 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3716 if (nfi == null) { 3717 loge("Failed to find Messenger in unregisterNetworkFactory"); 3718 return; 3719 } 3720 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3721 } 3722 3723 /** 3724 * NetworkAgentInfo supporting a request by requestId. 3725 * These have already been vetted (their Capabilities satisfy the request) 3726 * and the are the highest scored network available. 3727 * the are keyed off the Requests requestId. 3728 */ 3729 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 3730 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3731 new SparseArray<NetworkAgentInfo>(); 3732 3733 // NOTE: Accessed on multiple threads, must be synchronized on itself. 3734 @GuardedBy("mNetworkForNetId") 3735 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3736 new SparseArray<NetworkAgentInfo>(); 3737 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 3738 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 3739 // there may not be a strict 1:1 correlation between the two. 3740 @GuardedBy("mNetworkForNetId") 3741 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 3742 3743 // NetworkAgentInfo keyed off its connecting messenger 3744 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3745 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 3746 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3747 new HashMap<Messenger, NetworkAgentInfo>(); 3748 3749 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3750 private final NetworkRequest mDefaultRequest; 3751 3752 // Request used to optionally keep mobile data active even when higher 3753 // priority networks like Wi-Fi are active. 3754 private final NetworkRequest mDefaultMobileDataRequest; 3755 3756 private NetworkAgentInfo getDefaultNetwork() { 3757 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3758 } 3759 3760 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3761 return nai == getDefaultNetwork(); 3762 } 3763 3764 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3765 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3766 int currentScore, NetworkMisc networkMisc) { 3767 enforceConnectivityInternalPermission(); 3768 3769 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3770 // satisfies mDefaultRequest. 3771 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3772 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 3773 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 3774 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest); 3775 synchronized (this) { 3776 nai.networkMonitor.systemReady = mSystemReady; 3777 } 3778 if (DBG) log("registerNetworkAgent " + nai); 3779 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3780 return nai.network.netId; 3781 } 3782 3783 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3784 if (VDBG) log("Got NetworkAgent Messenger"); 3785 mNetworkAgentInfos.put(na.messenger, na); 3786 synchronized (mNetworkForNetId) { 3787 mNetworkForNetId.put(na.network.netId, na); 3788 } 3789 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3790 NetworkInfo networkInfo = na.networkInfo; 3791 na.networkInfo = null; 3792 updateNetworkInfo(na, networkInfo); 3793 } 3794 3795 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3796 LinkProperties newLp = networkAgent.linkProperties; 3797 int netId = networkAgent.network.netId; 3798 3799 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3800 // we do anything else, make sure its LinkProperties are accurate. 3801 if (networkAgent.clatd != null) { 3802 networkAgent.clatd.fixupLinkProperties(oldLp); 3803 } 3804 3805 updateInterfaces(newLp, oldLp, netId); 3806 updateMtu(newLp, oldLp); 3807 // TODO - figure out what to do for clat 3808// for (LinkProperties lp : newLp.getStackedLinks()) { 3809// updateMtu(lp, null); 3810// } 3811 updateTcpBufferSizes(networkAgent); 3812 3813 // TODO: deprecate and remove mDefaultDns when we can do so safely. 3814 // For now, use it only when the network has Internet access. http://b/18327075 3815 final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3816 NET_CAPABILITY_INTERNET); 3817 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3818 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3819 3820 updateClat(newLp, oldLp, networkAgent); 3821 if (isDefaultNetwork(networkAgent)) { 3822 handleApplyDefaultProxy(newLp.getHttpProxy()); 3823 } else { 3824 updateProxy(newLp, oldLp, networkAgent); 3825 } 3826 // TODO - move this check to cover the whole function 3827 if (!Objects.equals(newLp, oldLp)) { 3828 notifyIfacesChanged(); 3829 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3830 } 3831 } 3832 3833 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3834 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3835 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3836 3837 if (!wasRunningClat && shouldRunClat) { 3838 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3839 nai.clatd.start(); 3840 } else if (wasRunningClat && !shouldRunClat) { 3841 nai.clatd.stop(); 3842 } 3843 } 3844 3845 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3846 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3847 if (oldLp != null) { 3848 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3849 } else if (newLp != null) { 3850 interfaceDiff.added = newLp.getAllInterfaceNames(); 3851 } 3852 for (String iface : interfaceDiff.added) { 3853 try { 3854 if (DBG) log("Adding iface " + iface + " to network " + netId); 3855 mNetd.addInterfaceToNetwork(iface, netId); 3856 } catch (Exception e) { 3857 loge("Exception adding interface: " + e); 3858 } 3859 } 3860 for (String iface : interfaceDiff.removed) { 3861 try { 3862 if (DBG) log("Removing iface " + iface + " from network " + netId); 3863 mNetd.removeInterfaceFromNetwork(iface, netId); 3864 } catch (Exception e) { 3865 loge("Exception removing interface: " + e); 3866 } 3867 } 3868 } 3869 3870 /** 3871 * Have netd update routes from oldLp to newLp. 3872 * @return true if routes changed between oldLp and newLp 3873 */ 3874 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3875 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3876 if (oldLp != null) { 3877 routeDiff = oldLp.compareAllRoutes(newLp); 3878 } else if (newLp != null) { 3879 routeDiff.added = newLp.getAllRoutes(); 3880 } 3881 3882 // add routes before removing old in case it helps with continuous connectivity 3883 3884 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3885 for (RouteInfo route : routeDiff.added) { 3886 if (route.hasGateway()) continue; 3887 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3888 try { 3889 mNetd.addRoute(netId, route); 3890 } catch (Exception e) { 3891 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3892 loge("Exception in addRoute for non-gateway: " + e); 3893 } 3894 } 3895 } 3896 for (RouteInfo route : routeDiff.added) { 3897 if (route.hasGateway() == false) continue; 3898 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3899 try { 3900 mNetd.addRoute(netId, route); 3901 } catch (Exception e) { 3902 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3903 loge("Exception in addRoute for gateway: " + e); 3904 } 3905 } 3906 } 3907 3908 for (RouteInfo route : routeDiff.removed) { 3909 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3910 try { 3911 mNetd.removeRoute(netId, route); 3912 } catch (Exception e) { 3913 loge("Exception in removeRoute: " + e); 3914 } 3915 } 3916 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3917 } 3918 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 3919 boolean flush, boolean useDefaultDns) { 3920 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 3921 Collection<InetAddress> dnses = newLp.getDnsServers(); 3922 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 3923 dnses = new ArrayList(); 3924 dnses.add(mDefaultDns); 3925 if (DBG) { 3926 loge("no dns provided for netId " + netId + ", so using defaults"); 3927 } 3928 } 3929 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 3930 try { 3931 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 3932 newLp.getDomains()); 3933 } catch (Exception e) { 3934 loge("Exception in setDnsServersForNetwork: " + e); 3935 } 3936 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 3937 if (defaultNai != null && defaultNai.network.netId == netId) { 3938 setDefaultDnsSystemProperties(dnses); 3939 } 3940 flushVmDnsCache(); 3941 } else if (flush) { 3942 try { 3943 mNetd.flushNetworkDnsCache(netId); 3944 } catch (Exception e) { 3945 loge("Exception in flushNetworkDnsCache: " + e); 3946 } 3947 flushVmDnsCache(); 3948 } 3949 } 3950 3951 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 3952 int last = 0; 3953 for (InetAddress dns : dnses) { 3954 ++last; 3955 String key = "net.dns" + last; 3956 String value = dns.getHostAddress(); 3957 SystemProperties.set(key, value); 3958 } 3959 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 3960 String key = "net.dns" + i; 3961 SystemProperties.set(key, ""); 3962 } 3963 mNumDnsEntries = last; 3964 } 3965 3966 private void updateCapabilities(NetworkAgentInfo networkAgent, 3967 NetworkCapabilities networkCapabilities) { 3968 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 3969 synchronized (networkAgent) { 3970 networkAgent.networkCapabilities = networkCapabilities; 3971 } 3972 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 3973 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 3974 } 3975 } 3976 3977 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 3978 for (int i = 0; i < nai.networkRequests.size(); i++) { 3979 NetworkRequest nr = nai.networkRequests.valueAt(i); 3980 // Don't send listening requests to factories. b/17393458 3981 if (!isRequest(nr)) continue; 3982 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 3983 } 3984 } 3985 3986 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 3987 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 3988 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3989 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 3990 networkRequest); 3991 } 3992 } 3993 3994 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 3995 int notificationType) { 3996 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 3997 Intent intent = new Intent(); 3998 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 3999 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4000 nri.mPendingIntentSent = true; 4001 sendIntent(nri.mPendingIntent, intent); 4002 } 4003 // else not handled 4004 } 4005 4006 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4007 mPendingIntentWakeLock.acquire(); 4008 try { 4009 if (DBG) log("Sending " + pendingIntent); 4010 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4011 } catch (PendingIntent.CanceledException e) { 4012 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4013 mPendingIntentWakeLock.release(); 4014 releasePendingNetworkRequest(pendingIntent); 4015 } 4016 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4017 } 4018 4019 @Override 4020 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4021 String resultData, Bundle resultExtras) { 4022 if (DBG) log("Finished sending " + pendingIntent); 4023 mPendingIntentWakeLock.release(); 4024 // Release with a delay so the receiving client has an opportunity to put in its 4025 // own request. 4026 releasePendingNetworkRequestWithDelay(pendingIntent); 4027 } 4028 4029 private void callCallbackForRequest(NetworkRequestInfo nri, 4030 NetworkAgentInfo networkAgent, int notificationType) { 4031 if (nri.messenger == null) return; // Default request has no msgr 4032 Bundle bundle = new Bundle(); 4033 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4034 new NetworkRequest(nri.request)); 4035 Message msg = Message.obtain(); 4036 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4037 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4038 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4039 } 4040 switch (notificationType) { 4041 case ConnectivityManager.CALLBACK_LOSING: { 4042 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4043 break; 4044 } 4045 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4046 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4047 new NetworkCapabilities(networkAgent.networkCapabilities)); 4048 break; 4049 } 4050 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4051 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4052 new LinkProperties(networkAgent.linkProperties)); 4053 break; 4054 } 4055 } 4056 msg.what = notificationType; 4057 msg.setData(bundle); 4058 try { 4059 if (VDBG) { 4060 log("sending notification " + notifyTypeToName(notificationType) + 4061 " for " + nri.request); 4062 } 4063 nri.messenger.send(msg); 4064 } catch (RemoteException e) { 4065 // may occur naturally in the race of binder death. 4066 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4067 } 4068 } 4069 4070 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4071 for (int i = 0; i < nai.networkRequests.size(); i++) { 4072 NetworkRequest nr = nai.networkRequests.valueAt(i); 4073 // Ignore listening requests. 4074 if (!isRequest(nr)) continue; 4075 loge("Dead network still had at least " + nr); 4076 break; 4077 } 4078 nai.asyncChannel.disconnect(); 4079 } 4080 4081 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4082 if (oldNetwork == null) { 4083 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4084 return; 4085 } 4086 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4087 teardownUnneededNetwork(oldNetwork); 4088 } 4089 4090 private void makeDefault(NetworkAgentInfo newNetwork) { 4091 if (DBG) log("Switching to new default network: " + newNetwork); 4092 setupDataActivityTracking(newNetwork); 4093 try { 4094 mNetd.setDefaultNetId(newNetwork.network.netId); 4095 } catch (Exception e) { 4096 loge("Exception setting default network :" + e); 4097 } 4098 notifyLockdownVpn(newNetwork); 4099 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4100 updateTcpBufferSizes(newNetwork); 4101 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4102 } 4103 4104 // Handles a network appearing or improving its score. 4105 // 4106 // - Evaluates all current NetworkRequests that can be 4107 // satisfied by newNetwork, and reassigns to newNetwork 4108 // any such requests for which newNetwork is the best. 4109 // 4110 // - Lingers any validated Networks that as a result are no longer 4111 // needed. A network is needed if it is the best network for 4112 // one or more NetworkRequests, or if it is a VPN. 4113 // 4114 // - Tears down newNetwork if it just became validated 4115 // (i.e. nascent==JUST_VALIDATED) but turns out to be unneeded. 4116 // 4117 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4118 // networks that have no chance (i.e. even if validated) 4119 // of becoming the highest scoring network. 4120 // 4121 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4122 // it does not remove NetworkRequests that other Networks could better satisfy. 4123 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4124 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4125 // as it performs better by a factor of the number of Networks. 4126 // 4127 // @param newNetwork is the network to be matched against NetworkRequests. 4128 // @param nascent indicates if newNetwork just became validated, in which case it should be 4129 // torn down if unneeded. 4130 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4131 // performed to tear down unvalidated networks that have no chance (i.e. even if 4132 // validated) of becoming the highest scoring network. 4133 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, NascentState nascent, 4134 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4135 if (!newNetwork.created) return; 4136 if (nascent == NascentState.JUST_VALIDATED && !newNetwork.everValidated) { 4137 loge("ERROR: nascent network not validated."); 4138 } 4139 boolean keep = newNetwork.isVPN(); 4140 boolean isNewDefault = false; 4141 NetworkAgentInfo oldDefaultNetwork = null; 4142 if (DBG) log("rematching " + newNetwork.name()); 4143 // Find and migrate to this Network any NetworkRequests for 4144 // which this network is now the best. 4145 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4146 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4147 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4148 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4149 if (newNetwork == currentNetwork) { 4150 if (DBG) { 4151 log("Network " + newNetwork.name() + " was already satisfying" + 4152 " request " + nri.request.requestId + ". No change."); 4153 } 4154 keep = true; 4155 continue; 4156 } 4157 4158 // check if it satisfies the NetworkCapabilities 4159 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4160 if (newNetwork.satisfies(nri.request)) { 4161 if (!nri.isRequest) { 4162 // This is not a request, it's a callback listener. 4163 // Add it to newNetwork regardless of score. 4164 newNetwork.addRequest(nri.request); 4165 continue; 4166 } 4167 4168 // next check if it's better than any current network we're using for 4169 // this request 4170 if (VDBG) { 4171 log("currentScore = " + 4172 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4173 ", newScore = " + newNetwork.getCurrentScore()); 4174 } 4175 if (currentNetwork == null || 4176 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4177 if (currentNetwork != null) { 4178 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4179 currentNetwork.networkRequests.remove(nri.request.requestId); 4180 currentNetwork.networkLingered.add(nri.request); 4181 affectedNetworks.add(currentNetwork); 4182 } else { 4183 if (DBG) log(" accepting network in place of null"); 4184 } 4185 unlinger(newNetwork); 4186 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4187 newNetwork.addRequest(nri.request); 4188 keep = true; 4189 // Tell NetworkFactories about the new score, so they can stop 4190 // trying to connect if they know they cannot match it. 4191 // TODO - this could get expensive if we have alot of requests for this 4192 // network. Think about if there is a way to reduce this. Push 4193 // netid->request mapping to each factory? 4194 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4195 if (mDefaultRequest.requestId == nri.request.requestId) { 4196 isNewDefault = true; 4197 oldDefaultNetwork = currentNetwork; 4198 } 4199 } 4200 } 4201 } 4202 // Linger any networks that are no longer needed. 4203 for (NetworkAgentInfo nai : affectedNetworks) { 4204 if (nai.everValidated && unneeded(nai)) { 4205 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4206 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4207 } else { 4208 unlinger(nai); 4209 } 4210 } 4211 if (keep) { 4212 if (isNewDefault) { 4213 // Notify system services that this network is up. 4214 makeDefault(newNetwork); 4215 synchronized (ConnectivityService.this) { 4216 // have a new default network, release the transition wakelock in 4217 // a second if it's held. The second pause is to allow apps 4218 // to reconnect over the new network 4219 if (mNetTransitionWakeLock.isHeld()) { 4220 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4221 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4222 mNetTransitionWakeLockSerialNumber, 0), 4223 1000); 4224 } 4225 } 4226 } 4227 4228 // do this after the default net is switched, but 4229 // before LegacyTypeTracker sends legacy broadcasts 4230 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4231 4232 if (isNewDefault) { 4233 // Maintain the illusion: since the legacy API only 4234 // understands one network at a time, we must pretend 4235 // that the current default network disconnected before 4236 // the new one connected. 4237 if (oldDefaultNetwork != null) { 4238 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4239 oldDefaultNetwork, true); 4240 } 4241 mDefaultInetConditionPublished = newNetwork.everValidated ? 100 : 0; 4242 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4243 notifyLockdownVpn(newNetwork); 4244 } 4245 4246 // Notify battery stats service about this network, both the normal 4247 // interface and any stacked links. 4248 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4249 try { 4250 final IBatteryStats bs = BatteryStatsService.getService(); 4251 final int type = newNetwork.networkInfo.getType(); 4252 4253 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4254 bs.noteNetworkInterfaceType(baseIface, type); 4255 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4256 final String stackedIface = stacked.getInterfaceName(); 4257 bs.noteNetworkInterfaceType(stackedIface, type); 4258 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4259 } 4260 } catch (RemoteException ignored) { 4261 } 4262 4263 // This has to happen after the notifyNetworkCallbacks as that tickles each 4264 // ConnectivityManager instance so that legacy requests correctly bind dns 4265 // requests to this network. The legacy users are listening for this bcast 4266 // and will generally do a dns request so they can ensureRouteToHost and if 4267 // they do that before the callbacks happen they'll use the default network. 4268 // 4269 // TODO: Is there still a race here? We send the broadcast 4270 // after sending the callback, but if the app can receive the 4271 // broadcast before the callback, it might still break. 4272 // 4273 // This *does* introduce a race where if the user uses the new api 4274 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4275 // they may get old info. Reverse this after the old startUsing api is removed. 4276 // This is on top of the multiple intent sequencing referenced in the todo above. 4277 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4278 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4279 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4280 // legacy type tracker filters out repeat adds 4281 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4282 } 4283 } 4284 4285 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4286 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4287 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4288 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4289 if (newNetwork.isVPN()) { 4290 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4291 } 4292 } else if (nascent == NascentState.JUST_VALIDATED) { 4293 // Only tear down newly validated networks here. Leave unvalidated to either become 4294 // validated (and get evaluated against peers, one losing here), or get reaped (see 4295 // reapUnvalidatedNetworks) if they have no chance of becoming the highest scoring 4296 // network. Networks that have been up for a while and are validated should be torn 4297 // down via the lingering process so communication on that network is given time to 4298 // wrap up. 4299 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4300 teardownUnneededNetwork(newNetwork); 4301 } 4302 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4303 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4304 if (!nai.everValidated && unneeded(nai)) { 4305 if (DBG) log("Reaping " + nai.name()); 4306 teardownUnneededNetwork(nai); 4307 } 4308 } 4309 } 4310 } 4311 4312 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4313 // being disconnected. 4314 // If only one Network's score or capabilities have been modified since the last time 4315 // this function was called, pass this Network in via the "changed" arugment, otherwise 4316 // pass null. 4317 // If only one Network has been changed but its NetworkCapabilities have not changed, 4318 // pass in the Network's score (from getCurrentScore()) prior to the change via 4319 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4320 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4321 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4322 // to avoid the slowness. It is not simply enough to process just "changed", for 4323 // example in the case where "changed"'s score decreases and another network should begin 4324 // satifying a NetworkRequest that "changed" currently satisfies. 4325 4326 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4327 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4328 // rematchNetworkAndRequests() handles. 4329 if (changed != null && oldScore < changed.getCurrentScore()) { 4330 rematchNetworkAndRequests(changed, NascentState.NOT_JUST_VALIDATED, 4331 ReapUnvalidatedNetworks.REAP); 4332 } else { 4333 for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) { 4334 rematchNetworkAndRequests((NetworkAgentInfo)i.next(), 4335 NascentState.NOT_JUST_VALIDATED, 4336 // Only reap the last time through the loop. Reaping before all rematching 4337 // is complete could incorrectly teardown a network that hasn't yet been 4338 // rematched. 4339 i.hasNext() ? ReapUnvalidatedNetworks.DONT_REAP 4340 : ReapUnvalidatedNetworks.REAP); 4341 } 4342 } 4343 } 4344 4345 private void updateInetCondition(NetworkAgentInfo nai) { 4346 // Don't bother updating until we've graduated to validated at least once. 4347 if (!nai.everValidated) return; 4348 // For now only update icons for default connection. 4349 // TODO: Update WiFi and cellular icons separately. b/17237507 4350 if (!isDefaultNetwork(nai)) return; 4351 4352 int newInetCondition = nai.lastValidated ? 100 : 0; 4353 // Don't repeat publish. 4354 if (newInetCondition == mDefaultInetConditionPublished) return; 4355 4356 mDefaultInetConditionPublished = newInetCondition; 4357 sendInetConditionBroadcast(nai.networkInfo); 4358 } 4359 4360 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4361 if (mLockdownTracker != null) { 4362 if (nai != null && nai.isVPN()) { 4363 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4364 } else { 4365 mLockdownTracker.onNetworkInfoChanged(); 4366 } 4367 } 4368 } 4369 4370 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4371 NetworkInfo.State state = newInfo.getState(); 4372 NetworkInfo oldInfo = null; 4373 synchronized (networkAgent) { 4374 oldInfo = networkAgent.networkInfo; 4375 networkAgent.networkInfo = newInfo; 4376 } 4377 notifyLockdownVpn(networkAgent); 4378 4379 if (oldInfo != null && oldInfo.getState() == state) { 4380 if (VDBG) log("ignoring duplicate network state non-change"); 4381 return; 4382 } 4383 if (DBG) { 4384 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4385 (oldInfo == null ? "null" : oldInfo.getState()) + 4386 " to " + state); 4387 } 4388 4389 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4390 try { 4391 // This should never fail. Specifying an already in use NetID will cause failure. 4392 if (networkAgent.isVPN()) { 4393 mNetd.createVirtualNetwork(networkAgent.network.netId, 4394 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4395 (networkAgent.networkMisc == null || 4396 !networkAgent.networkMisc.allowBypass)); 4397 } else { 4398 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4399 } 4400 } catch (Exception e) { 4401 loge("Error creating network " + networkAgent.network.netId + ": " 4402 + e.getMessage()); 4403 return; 4404 } 4405 networkAgent.created = true; 4406 updateLinkProperties(networkAgent, null); 4407 notifyIfacesChanged(); 4408 4409 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4410 scheduleUnvalidatedPrompt(networkAgent); 4411 4412 if (networkAgent.isVPN()) { 4413 // Temporarily disable the default proxy (not global). 4414 synchronized (mProxyLock) { 4415 if (!mDefaultProxyDisabled) { 4416 mDefaultProxyDisabled = true; 4417 if (mGlobalProxy == null && mDefaultProxy != null) { 4418 sendProxyBroadcast(null); 4419 } 4420 } 4421 } 4422 // TODO: support proxy per network. 4423 } 4424 4425 // Consider network even though it is not yet validated. 4426 rematchNetworkAndRequests(networkAgent, NascentState.NOT_JUST_VALIDATED, 4427 ReapUnvalidatedNetworks.REAP); 4428 4429 // This has to happen after matching the requests, because callbacks are just requests. 4430 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4431 } else if (state == NetworkInfo.State.DISCONNECTED || 4432 state == NetworkInfo.State.SUSPENDED) { 4433 networkAgent.asyncChannel.disconnect(); 4434 if (networkAgent.isVPN()) { 4435 synchronized (mProxyLock) { 4436 if (mDefaultProxyDisabled) { 4437 mDefaultProxyDisabled = false; 4438 if (mGlobalProxy == null && mDefaultProxy != null) { 4439 sendProxyBroadcast(mDefaultProxy); 4440 } 4441 } 4442 } 4443 } 4444 } 4445 } 4446 4447 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4448 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4449 if (score < 0) { 4450 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4451 "). Bumping score to min of 0"); 4452 score = 0; 4453 } 4454 4455 final int oldScore = nai.getCurrentScore(); 4456 nai.setCurrentScore(score); 4457 4458 rematchAllNetworksAndRequests(nai, oldScore); 4459 4460 sendUpdatedScoreToFactories(nai); 4461 } 4462 4463 // notify only this one new request of the current state 4464 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4465 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4466 // TODO - read state from monitor to decide what to send. 4467// if (nai.networkMonitor.isLingering()) { 4468// notifyType = NetworkCallbacks.LOSING; 4469// } else if (nai.networkMonitor.isEvaluating()) { 4470// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4471// } 4472 if (nri.mPendingIntent == null) { 4473 callCallbackForRequest(nri, nai, notifyType); 4474 } else { 4475 sendPendingIntentForRequest(nri, nai, notifyType); 4476 } 4477 } 4478 4479 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4480 // The NetworkInfo we actually send out has no bearing on the real 4481 // state of affairs. For example, if the default connection is mobile, 4482 // and a request for HIPRI has just gone away, we need to pretend that 4483 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4484 // the state to DISCONNECTED, even though the network is of type MOBILE 4485 // and is still connected. 4486 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4487 info.setType(type); 4488 if (connected) { 4489 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4490 sendConnectedBroadcast(info); 4491 } else { 4492 info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo()); 4493 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4494 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4495 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4496 if (info.isFailover()) { 4497 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4498 nai.networkInfo.setFailover(false); 4499 } 4500 if (info.getReason() != null) { 4501 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4502 } 4503 if (info.getExtraInfo() != null) { 4504 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4505 } 4506 NetworkAgentInfo newDefaultAgent = null; 4507 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4508 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4509 if (newDefaultAgent != null) { 4510 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4511 newDefaultAgent.networkInfo); 4512 } else { 4513 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4514 } 4515 } 4516 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4517 mDefaultInetConditionPublished); 4518 sendStickyBroadcast(intent); 4519 if (newDefaultAgent != null) { 4520 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4521 } 4522 } 4523 } 4524 4525 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4526 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4527 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4528 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4529 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4530 if (VDBG) log(" sending notification for " + nr); 4531 if (nri.mPendingIntent == null) { 4532 callCallbackForRequest(nri, networkAgent, notifyType); 4533 } else { 4534 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4535 } 4536 } 4537 } 4538 4539 private String notifyTypeToName(int notifyType) { 4540 switch (notifyType) { 4541 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4542 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4543 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4544 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4545 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4546 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4547 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4548 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4549 } 4550 return "UNKNOWN"; 4551 } 4552 4553 /** 4554 * Notify other system services that set of active ifaces has changed. 4555 */ 4556 private void notifyIfacesChanged() { 4557 try { 4558 mStatsService.forceUpdateIfaces(); 4559 } catch (Exception ignored) { 4560 } 4561 } 4562 4563 @Override 4564 public boolean addVpnAddress(String address, int prefixLength) { 4565 throwIfLockdownEnabled(); 4566 int user = UserHandle.getUserId(Binder.getCallingUid()); 4567 synchronized (mVpns) { 4568 return mVpns.get(user).addAddress(address, prefixLength); 4569 } 4570 } 4571 4572 @Override 4573 public boolean removeVpnAddress(String address, int prefixLength) { 4574 throwIfLockdownEnabled(); 4575 int user = UserHandle.getUserId(Binder.getCallingUid()); 4576 synchronized (mVpns) { 4577 return mVpns.get(user).removeAddress(address, prefixLength); 4578 } 4579 } 4580 4581 @Override 4582 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4583 throwIfLockdownEnabled(); 4584 int user = UserHandle.getUserId(Binder.getCallingUid()); 4585 boolean success; 4586 synchronized (mVpns) { 4587 success = mVpns.get(user).setUnderlyingNetworks(networks); 4588 } 4589 if (success) { 4590 notifyIfacesChanged(); 4591 } 4592 return success; 4593 } 4594 4595 @Override 4596 public void factoryReset() { 4597 enforceConnectivityInternalPermission(); 4598 final int userId = UserHandle.getCallingUserId(); 4599 4600 // Turn airplane mode off 4601 setAirplaneMode(false); 4602 4603 // Untether 4604 for (String tether : getTetheredIfaces()) { 4605 untether(tether); 4606 } 4607 4608 // Turn VPN off 4609 VpnConfig vpnConfig = getVpnConfig(userId); 4610 if (vpnConfig != null) { 4611 if (vpnConfig.legacy) { 4612 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 4613 } else { 4614 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 4615 // in the future without user intervention. 4616 setVpnPackageAuthorization(vpnConfig.user, userId, false); 4617 4618 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 4619 } 4620 } 4621 } 4622} 4623