ConnectivityService.java revision 6a5c0e10b192fe70e237c83bc752e2cbf66ffe0e
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 int mNumDnsEntries; 203 204 private boolean mTestMode; 205 private static ConnectivityService sServiceInstance; 206 207 private INetworkManagementService mNetd; 208 private INetworkStatsService mStatsService; 209 private INetworkPolicyManager mPolicyManager; 210 211 private String mCurrentTcpBufferSizes; 212 213 private static final int ENABLED = 1; 214 private static final int DISABLED = 0; 215 216 // Arguments to rematchNetworkAndRequests() 217 private enum NascentState { 218 // Indicates a network was just validated for the first time. If the network is found to 219 // be unwanted (i.e. not satisfy any NetworkRequests) it is torn down. 220 JUST_VALIDATED, 221 // Indicates a network was not validated for the first time immediately prior to this call. 222 NOT_JUST_VALIDATED 223 }; 224 private enum ReapUnvalidatedNetworks { 225 // Tear down unvalidated networks that have no chance (i.e. even if validated) of becoming 226 // the highest scoring network satisfying a NetworkRequest. This should be passed when it's 227 // known that there may be unvalidated networks that could potentially be reaped, and when 228 // all networks have been rematched against all NetworkRequests. 229 REAP, 230 // Don't reap unvalidated networks. This should be passed when it's known that there are 231 // no unvalidated networks that could potentially be reaped, and when some networks have 232 // not yet been rematched against all NetworkRequests. 233 DONT_REAP 234 }; 235 236 /** 237 * used internally to change our mobile data enabled flag 238 */ 239 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 240 241 /** 242 * used internally to clear a wakelock when transitioning 243 * from one net to another. Clear happens when we get a new 244 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 245 * after a timeout if no network is found (typically 1 min). 246 */ 247 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 248 249 /** 250 * used internally to reload global proxy settings 251 */ 252 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 253 254 /** 255 * used internally to send a sticky broadcast delayed. 256 */ 257 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 258 259 /** 260 * PAC manager has received new port. 261 */ 262 private static final int EVENT_PROXY_HAS_CHANGED = 16; 263 264 /** 265 * used internally when registering NetworkFactories 266 * obj = NetworkFactoryInfo 267 */ 268 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 269 270 /** 271 * used internally when registering NetworkAgents 272 * obj = Messenger 273 */ 274 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 275 276 /** 277 * used to add a network request 278 * includes a NetworkRequestInfo 279 */ 280 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 281 282 /** 283 * indicates a timeout period is over - check if we had a network yet or not 284 * and if not, call the timeout calback (but leave the request live until they 285 * cancel it. 286 * includes a NetworkRequestInfo 287 */ 288 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 289 290 /** 291 * used to add a network listener - no request 292 * includes a NetworkRequestInfo 293 */ 294 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 295 296 /** 297 * used to remove a network request, either a listener or a real request 298 * arg1 = UID of caller 299 * obj = NetworkRequest 300 */ 301 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 302 303 /** 304 * used internally when registering NetworkFactories 305 * obj = Messenger 306 */ 307 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 308 309 /** 310 * used internally to expire a wakelock when transitioning 311 * from one net to another. Expire happens when we fail to find 312 * a new network (typically after 1 minute) - 313 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 314 * a replacement network. 315 */ 316 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 317 318 /** 319 * Used internally to indicate the system is ready. 320 */ 321 private static final int EVENT_SYSTEM_READY = 25; 322 323 /** 324 * used to add a network request with a pending intent 325 * includes a NetworkRequestInfo 326 */ 327 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 328 329 /** 330 * used to remove a pending intent and its associated network request. 331 * arg1 = UID of caller 332 * obj = PendingIntent 333 */ 334 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 335 336 /** 337 * used to specify whether a network should be used even if unvalidated. 338 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 339 * arg2 = whether to remember this choice in the future (1 or 0) 340 * obj = network 341 */ 342 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 343 344 /** 345 * used to ask the user to confirm a connection to an unvalidated network. 346 * obj = network 347 */ 348 private static final int EVENT_PROMPT_UNVALIDATED = 29; 349 350 /** 351 * used internally to (re)configure mobile data always-on settings. 352 */ 353 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 354 355 /** Handler used for internal events. */ 356 final private InternalHandler mHandler; 357 /** Handler used for incoming {@link NetworkStateTracker} events. */ 358 final private NetworkStateTrackerHandler mTrackerHandler; 359 360 private boolean mSystemReady; 361 private Intent mInitialBroadcast; 362 363 private PowerManager.WakeLock mNetTransitionWakeLock; 364 private String mNetTransitionWakeLockCausedBy = ""; 365 private int mNetTransitionWakeLockSerialNumber; 366 private int mNetTransitionWakeLockTimeout; 367 private final PowerManager.WakeLock mPendingIntentWakeLock; 368 369 private InetAddress mDefaultDns; 370 371 // used in DBG mode to track inet condition reports 372 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 373 private ArrayList mInetLog; 374 375 // track the current default http proxy - tell the world if we get a new one (real change) 376 private volatile ProxyInfo mDefaultProxy = null; 377 private Object mProxyLock = new Object(); 378 private boolean mDefaultProxyDisabled = false; 379 380 // track the global proxy. 381 private ProxyInfo mGlobalProxy = null; 382 383 private PacManager mPacManager = null; 384 385 final private SettingsObserver mSettingsObserver; 386 387 private UserManager mUserManager; 388 389 NetworkConfig[] mNetConfigs; 390 int mNetworksDefined; 391 392 // the set of network types that can only be enabled by system/sig apps 393 List mProtectedNetworks; 394 395 private DataConnectionStats mDataConnectionStats; 396 397 TelephonyManager mTelephonyManager; 398 399 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 400 private final static int MIN_NET_ID = 100; // some reserved marks 401 private final static int MAX_NET_ID = 65535; 402 private int mNextNetId = MIN_NET_ID; 403 404 // sequence number of NetworkRequests 405 private int mNextNetworkRequestId = 1; 406 407 /** 408 * Implements support for the legacy "one network per network type" model. 409 * 410 * We used to have a static array of NetworkStateTrackers, one for each 411 * network type, but that doesn't work any more now that we can have, 412 * for example, more that one wifi network. This class stores all the 413 * NetworkAgentInfo objects that support a given type, but the legacy 414 * API will only see the first one. 415 * 416 * It serves two main purposes: 417 * 418 * 1. Provide information about "the network for a given type" (since this 419 * API only supports one). 420 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 421 * the first network for a given type changes, or if the default network 422 * changes. 423 */ 424 private class LegacyTypeTracker { 425 426 private static final boolean DBG = true; 427 private static final boolean VDBG = false; 428 private static final String TAG = "CSLegacyTypeTracker"; 429 430 /** 431 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 432 * Each list holds references to all NetworkAgentInfos that are used to 433 * satisfy requests for that network type. 434 * 435 * This array is built out at startup such that an unsupported network 436 * doesn't get an ArrayList instance, making this a tristate: 437 * unsupported, supported but not active and active. 438 * 439 * The actual lists are populated when we scan the network types that 440 * are supported on this device. 441 */ 442 private ArrayList<NetworkAgentInfo> mTypeLists[]; 443 444 public LegacyTypeTracker() { 445 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 446 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 447 } 448 449 public void addSupportedType(int type) { 450 if (mTypeLists[type] != null) { 451 throw new IllegalStateException( 452 "legacy list for type " + type + "already initialized"); 453 } 454 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 455 } 456 457 public boolean isTypeSupported(int type) { 458 return isNetworkTypeValid(type) && mTypeLists[type] != null; 459 } 460 461 public NetworkAgentInfo getNetworkForType(int type) { 462 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 463 return mTypeLists[type].get(0); 464 } else { 465 return null; 466 } 467 } 468 469 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type, 470 boolean isDefaultNetwork) { 471 if (DBG) { 472 log("Sending " + (connected ? "connected" : "disconnected") + 473 " broadcast for type " + type + " " + nai.name() + 474 " isDefaultNetwork=" + isDefaultNetwork); 475 } 476 } 477 478 /** Adds the given network to the specified legacy type list. */ 479 public void add(int type, NetworkAgentInfo nai) { 480 if (!isTypeSupported(type)) { 481 return; // Invalid network type. 482 } 483 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 484 485 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 486 if (list.contains(nai)) { 487 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 488 return; 489 } 490 491 list.add(nai); 492 493 // Send a broadcast if this is the first network of its type or if it's the default. 494 final boolean isDefaultNetwork = isDefaultNetwork(nai); 495 if (list.size() == 1 || isDefaultNetwork) { 496 maybeLogBroadcast(nai, true, type, isDefaultNetwork); 497 sendLegacyNetworkBroadcast(nai, true, type); 498 } 499 } 500 501 /** Removes the given network from the specified legacy type list. */ 502 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 503 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 504 if (list == null || list.isEmpty()) { 505 return; 506 } 507 508 final boolean wasFirstNetwork = list.get(0).equals(nai); 509 510 if (!list.remove(nai)) { 511 return; 512 } 513 514 if (wasFirstNetwork || wasDefault) { 515 maybeLogBroadcast(nai, false, type, wasDefault); 516 sendLegacyNetworkBroadcast(nai, false, type); 517 } 518 519 if (!list.isEmpty() && wasFirstNetwork) { 520 if (DBG) log("Other network available for type " + type + 521 ", sending connected broadcast"); 522 final NetworkAgentInfo replacement = list.get(0); 523 maybeLogBroadcast(replacement, false, type, isDefaultNetwork(replacement)); 524 sendLegacyNetworkBroadcast(replacement, false, type); 525 } 526 } 527 528 /** Removes the given network from all legacy type lists. */ 529 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 530 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 531 for (int type = 0; type < mTypeLists.length; type++) { 532 remove(type, nai, wasDefault); 533 } 534 } 535 536 private String naiToString(NetworkAgentInfo nai) { 537 String name = (nai != null) ? nai.name() : "null"; 538 String state = (nai.networkInfo != null) ? 539 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 540 "???/???"; 541 return name + " " + state; 542 } 543 544 public void dump(IndentingPrintWriter pw) { 545 pw.println("mLegacyTypeTracker:"); 546 pw.increaseIndent(); 547 pw.print("Supported types:"); 548 for (int type = 0; type < mTypeLists.length; type++) { 549 if (mTypeLists[type] != null) pw.print(" " + type); 550 } 551 pw.println(); 552 pw.println("Current state:"); 553 pw.increaseIndent(); 554 for (int type = 0; type < mTypeLists.length; type++) { 555 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 556 for (NetworkAgentInfo nai : mTypeLists[type]) { 557 pw.println(type + " " + naiToString(nai)); 558 } 559 } 560 pw.decreaseIndent(); 561 pw.decreaseIndent(); 562 pw.println(); 563 } 564 565 // This class needs its own log method because it has a different TAG. 566 private void log(String s) { 567 Slog.d(TAG, s); 568 } 569 570 } 571 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 572 573 public ConnectivityService(Context context, INetworkManagementService netManager, 574 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 575 if (DBG) log("ConnectivityService starting up"); 576 577 mDefaultRequest = createInternetRequestForTransport(-1); 578 mNetworkRequests.put(mDefaultRequest, new NetworkRequestInfo( 579 null, mDefaultRequest, new Binder(), NetworkRequestInfo.REQUEST)); 580 581 mDefaultMobileDataRequest = createInternetRequestForTransport( 582 NetworkCapabilities.TRANSPORT_CELLULAR); 583 584 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 585 handlerThread.start(); 586 mHandler = new InternalHandler(handlerThread.getLooper()); 587 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 588 589 // setup our unique device name 590 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 591 String id = Settings.Secure.getString(context.getContentResolver(), 592 Settings.Secure.ANDROID_ID); 593 if (id != null && id.length() > 0) { 594 String name = new String("android-").concat(id); 595 SystemProperties.set("net.hostname", name); 596 } 597 } 598 599 // read our default dns server ip 600 String dns = Settings.Global.getString(context.getContentResolver(), 601 Settings.Global.DEFAULT_DNS_SERVER); 602 if (dns == null || dns.length() == 0) { 603 dns = context.getResources().getString( 604 com.android.internal.R.string.config_default_dns_server); 605 } 606 try { 607 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 608 } catch (IllegalArgumentException e) { 609 loge("Error setting defaultDns using " + dns); 610 } 611 612 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 613 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 614 615 mContext = checkNotNull(context, "missing Context"); 616 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 617 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 618 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 619 mKeyStore = KeyStore.getInstance(); 620 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 621 622 try { 623 mPolicyManager.registerListener(mPolicyListener); 624 } catch (RemoteException e) { 625 // ouch, no rules updates means some processes may never get network 626 loge("unable to register INetworkPolicyListener" + e.toString()); 627 } 628 629 final PowerManager powerManager = (PowerManager) context.getSystemService( 630 Context.POWER_SERVICE); 631 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 632 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 633 com.android.internal.R.integer.config_networkTransitionTimeout); 634 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 635 636 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 637 638 // TODO: What is the "correct" way to do determine if this is a wifi only device? 639 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 640 log("wifiOnly=" + wifiOnly); 641 String[] naStrings = context.getResources().getStringArray( 642 com.android.internal.R.array.networkAttributes); 643 for (String naString : naStrings) { 644 try { 645 NetworkConfig n = new NetworkConfig(naString); 646 if (VDBG) log("naString=" + naString + " config=" + n); 647 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 648 loge("Error in networkAttributes - ignoring attempt to define type " + 649 n.type); 650 continue; 651 } 652 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 653 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 654 n.type); 655 continue; 656 } 657 if (mNetConfigs[n.type] != null) { 658 loge("Error in networkAttributes - ignoring attempt to redefine type " + 659 n.type); 660 continue; 661 } 662 mLegacyTypeTracker.addSupportedType(n.type); 663 664 mNetConfigs[n.type] = n; 665 mNetworksDefined++; 666 } catch(Exception e) { 667 // ignore it - leave the entry null 668 } 669 } 670 671 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 672 if (mNetConfigs[TYPE_VPN] == null) { 673 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 674 // don't need to add TYPE_VPN to mNetConfigs. 675 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 676 mNetworksDefined++; // used only in the log() statement below. 677 } 678 679 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 680 681 mProtectedNetworks = new ArrayList<Integer>(); 682 int[] protectedNetworks = context.getResources().getIntArray( 683 com.android.internal.R.array.config_protectedNetworks); 684 for (int p : protectedNetworks) { 685 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 686 mProtectedNetworks.add(p); 687 } else { 688 if (DBG) loge("Ignoring protectedNetwork " + p); 689 } 690 } 691 692 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 693 && SystemProperties.get("ro.build.type").equals("eng"); 694 695 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 696 697 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 698 699 //set up the listener for user state for creating user VPNs 700 IntentFilter intentFilter = new IntentFilter(); 701 intentFilter.addAction(Intent.ACTION_USER_STARTING); 702 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 703 mContext.registerReceiverAsUser( 704 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 705 706 try { 707 mNetd.registerObserver(mTethering); 708 mNetd.registerObserver(mDataActivityObserver); 709 } catch (RemoteException e) { 710 loge("Error registering observer :" + e); 711 } 712 713 if (DBG) { 714 mInetLog = new ArrayList(); 715 } 716 717 mSettingsObserver = new SettingsObserver(mContext, mHandler); 718 registerSettingsCallbacks(); 719 720 mDataConnectionStats = new DataConnectionStats(mContext); 721 mDataConnectionStats.startMonitoring(); 722 723 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 724 725 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 726 } 727 728 private NetworkRequest createInternetRequestForTransport(int transportType) { 729 NetworkCapabilities netCap = new NetworkCapabilities(); 730 netCap.addCapability(NET_CAPABILITY_INTERNET); 731 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 732 if (transportType > -1) { 733 netCap.addTransportType(transportType); 734 } 735 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 736 } 737 738 private void handleMobileDataAlwaysOn() { 739 final boolean enable = (Settings.Global.getInt( 740 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 741 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 742 if (enable == isEnabled) { 743 return; // Nothing to do. 744 } 745 746 if (enable) { 747 handleRegisterNetworkRequest(new NetworkRequestInfo( 748 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestInfo.REQUEST)); 749 } else { 750 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 751 } 752 } 753 754 private void registerSettingsCallbacks() { 755 // Watch for global HTTP proxy changes. 756 mSettingsObserver.observe( 757 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 758 EVENT_APPLY_GLOBAL_HTTP_PROXY); 759 760 // Watch for whether or not to keep mobile data always on. 761 mSettingsObserver.observe( 762 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 763 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 764 } 765 766 private synchronized int nextNetworkRequestId() { 767 return mNextNetworkRequestId++; 768 } 769 770 private int reserveNetId() { 771 synchronized (mNetworkForNetId) { 772 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 773 int netId = mNextNetId; 774 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 775 // Make sure NetID unused. http://b/16815182 776 if (!mNetIdInUse.get(netId)) { 777 mNetIdInUse.put(netId, true); 778 return netId; 779 } 780 } 781 } 782 throw new IllegalStateException("No free netIds"); 783 } 784 785 private NetworkState getFilteredNetworkState(int networkType, int uid) { 786 NetworkInfo info = null; 787 LinkProperties lp = null; 788 NetworkCapabilities nc = null; 789 Network network = null; 790 String subscriberId = null; 791 792 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 793 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 794 if (nai != null) { 795 synchronized (nai) { 796 info = new NetworkInfo(nai.networkInfo); 797 lp = new LinkProperties(nai.linkProperties); 798 nc = new NetworkCapabilities(nai.networkCapabilities); 799 // Network objects are outwardly immutable so there is no point to duplicating. 800 // Duplicating also precludes sharing socket factories and connection pools. 801 network = nai.network; 802 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 803 } 804 info.setType(networkType); 805 } else { 806 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 807 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 808 info.setIsAvailable(true); 809 lp = new LinkProperties(); 810 nc = new NetworkCapabilities(); 811 network = null; 812 } 813 info = getFilteredNetworkInfo(info, lp, uid); 814 } 815 816 return new NetworkState(info, lp, nc, network, subscriberId, null); 817 } 818 819 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 820 if (network == null) { 821 return null; 822 } 823 synchronized (mNetworkForNetId) { 824 return mNetworkForNetId.get(network.netId); 825 } 826 }; 827 828 private Network[] getVpnUnderlyingNetworks(int uid) { 829 if (!mLockdownEnabled) { 830 int user = UserHandle.getUserId(uid); 831 synchronized (mVpns) { 832 Vpn vpn = mVpns.get(user); 833 if (vpn != null && vpn.appliesToUid(uid)) { 834 return vpn.getUnderlyingNetworks(); 835 } 836 } 837 } 838 return null; 839 } 840 841 private NetworkState getUnfilteredActiveNetworkState(int uid) { 842 NetworkInfo info = null; 843 LinkProperties lp = null; 844 NetworkCapabilities nc = null; 845 Network network = null; 846 String subscriberId = null; 847 848 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 849 850 final Network[] networks = getVpnUnderlyingNetworks(uid); 851 if (networks != null) { 852 // getUnderlyingNetworks() returns: 853 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 854 // empty array => the VPN explicitly said "no default network". 855 // non-empty array => the VPN specified one or more default networks; we use the 856 // first one. 857 if (networks.length > 0) { 858 nai = getNetworkAgentInfoForNetwork(networks[0]); 859 } else { 860 nai = null; 861 } 862 } 863 864 if (nai != null) { 865 synchronized (nai) { 866 info = new NetworkInfo(nai.networkInfo); 867 lp = new LinkProperties(nai.linkProperties); 868 nc = new NetworkCapabilities(nai.networkCapabilities); 869 // Network objects are outwardly immutable so there is no point to duplicating. 870 // Duplicating also precludes sharing socket factories and connection pools. 871 network = nai.network; 872 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 873 } 874 } 875 876 return new NetworkState(info, lp, nc, network, subscriberId, null); 877 } 878 879 /** 880 * Check if UID should be blocked from using the network with the given LinkProperties. 881 */ 882 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 883 final boolean networkCostly; 884 final int uidRules; 885 886 final String iface = (lp == null ? "" : lp.getInterfaceName()); 887 synchronized (mRulesLock) { 888 networkCostly = mMeteredIfaces.contains(iface); 889 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 890 } 891 892 if ((uidRules & RULE_REJECT_ALL) != 0 893 || (networkCostly && (uidRules & RULE_REJECT_METERED) != 0)) { 894 return true; 895 } 896 897 // no restrictive rules; network is visible 898 return false; 899 } 900 901 /** 902 * Return a filtered {@link NetworkInfo}, potentially marked 903 * {@link DetailedState#BLOCKED} based on 904 * {@link #isNetworkWithLinkPropertiesBlocked}. 905 */ 906 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 907 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 908 // network is blocked; clone and override state 909 info = new NetworkInfo(info); 910 info.setDetailedState(DetailedState.BLOCKED, null, null); 911 if (DBG) { 912 log("returning Blocked NetworkInfo for ifname=" + 913 lp.getInterfaceName() + ", uid=" + uid); 914 } 915 } 916 if (info != null && mLockdownTracker != null) { 917 info = mLockdownTracker.augmentNetworkInfo(info); 918 if (DBG) log("returning Locked NetworkInfo"); 919 } 920 return info; 921 } 922 923 /** 924 * Return NetworkInfo for the active (i.e., connected) network interface. 925 * It is assumed that at most one network is active at a time. If more 926 * than one is active, it is indeterminate which will be returned. 927 * @return the info for the active network, or {@code null} if none is 928 * active 929 */ 930 @Override 931 public NetworkInfo getActiveNetworkInfo() { 932 enforceAccessPermission(); 933 final int uid = Binder.getCallingUid(); 934 NetworkState state = getUnfilteredActiveNetworkState(uid); 935 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 936 } 937 938 @Override 939 public Network getActiveNetwork() { 940 enforceAccessPermission(); 941 final int uid = Binder.getCallingUid(); 942 final int user = UserHandle.getUserId(uid); 943 int vpnNetId = NETID_UNSET; 944 synchronized (mVpns) { 945 final Vpn vpn = mVpns.get(user); 946 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 947 } 948 NetworkAgentInfo nai; 949 if (vpnNetId != NETID_UNSET) { 950 synchronized (mNetworkForNetId) { 951 nai = mNetworkForNetId.get(vpnNetId); 952 } 953 if (nai != null) return nai.network; 954 } 955 nai = getDefaultNetwork(); 956 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 957 return nai != null ? nai.network : null; 958 } 959 960 /** 961 * Find the first Provisioning network. 962 * 963 * @return NetworkInfo or null if none. 964 */ 965 private NetworkInfo getProvisioningNetworkInfo() { 966 enforceAccessPermission(); 967 968 // Find the first Provisioning Network 969 NetworkInfo provNi = null; 970 for (NetworkInfo ni : getAllNetworkInfo()) { 971 if (ni.isConnectedToProvisioningNetwork()) { 972 provNi = ni; 973 break; 974 } 975 } 976 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 977 return provNi; 978 } 979 980 /** 981 * Find the first Provisioning network or the ActiveDefaultNetwork 982 * if there is no Provisioning network 983 * 984 * @return NetworkInfo or null if none. 985 */ 986 @Override 987 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 988 enforceAccessPermission(); 989 990 NetworkInfo provNi = getProvisioningNetworkInfo(); 991 if (provNi == null) { 992 provNi = getActiveNetworkInfo(); 993 } 994 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 995 return provNi; 996 } 997 998 public NetworkInfo getActiveNetworkInfoUnfiltered() { 999 enforceAccessPermission(); 1000 final int uid = Binder.getCallingUid(); 1001 NetworkState state = getUnfilteredActiveNetworkState(uid); 1002 return state.networkInfo; 1003 } 1004 1005 @Override 1006 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1007 enforceConnectivityInternalPermission(); 1008 NetworkState state = getUnfilteredActiveNetworkState(uid); 1009 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1010 } 1011 1012 @Override 1013 public NetworkInfo getNetworkInfo(int networkType) { 1014 enforceAccessPermission(); 1015 final int uid = Binder.getCallingUid(); 1016 if (getVpnUnderlyingNetworks(uid) != null) { 1017 // A VPN is active, so we may need to return one of its underlying networks. This 1018 // information is not available in LegacyTypeTracker, so we have to get it from 1019 // getUnfilteredActiveNetworkState. 1020 NetworkState state = getUnfilteredActiveNetworkState(uid); 1021 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1022 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1023 } 1024 } 1025 NetworkState state = getFilteredNetworkState(networkType, uid); 1026 return state.networkInfo; 1027 } 1028 1029 @Override 1030 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1031 enforceAccessPermission(); 1032 final int uid = Binder.getCallingUid(); 1033 NetworkInfo info = null; 1034 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1035 if (nai != null) { 1036 synchronized (nai) { 1037 info = new NetworkInfo(nai.networkInfo); 1038 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1039 } 1040 } 1041 return info; 1042 } 1043 1044 @Override 1045 public NetworkInfo[] getAllNetworkInfo() { 1046 enforceAccessPermission(); 1047 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1048 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1049 networkType++) { 1050 NetworkInfo info = getNetworkInfo(networkType); 1051 if (info != null) { 1052 result.add(info); 1053 } 1054 } 1055 return result.toArray(new NetworkInfo[result.size()]); 1056 } 1057 1058 @Override 1059 public Network getNetworkForType(int networkType) { 1060 enforceAccessPermission(); 1061 final int uid = Binder.getCallingUid(); 1062 NetworkState state = getFilteredNetworkState(networkType, uid); 1063 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1064 return state.network; 1065 } 1066 return null; 1067 } 1068 1069 @Override 1070 public Network[] getAllNetworks() { 1071 enforceAccessPermission(); 1072 synchronized (mNetworkForNetId) { 1073 final Network[] result = new Network[mNetworkForNetId.size()]; 1074 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1075 result[i] = mNetworkForNetId.valueAt(i).network; 1076 } 1077 return result; 1078 } 1079 } 1080 1081 @Override 1082 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1083 // The basic principle is: if an app's traffic could possibly go over a 1084 // network, without the app doing anything multinetwork-specific, 1085 // (hence, by "default"), then include that network's capabilities in 1086 // the array. 1087 // 1088 // In the normal case, app traffic only goes over the system's default 1089 // network connection, so that's the only network returned. 1090 // 1091 // With a VPN in force, some app traffic may go into the VPN, and thus 1092 // over whatever underlying networks the VPN specifies, while other app 1093 // traffic may go over the system default network (e.g.: a split-tunnel 1094 // VPN, or an app disallowed by the VPN), so the set of networks 1095 // returned includes the VPN's underlying networks and the system 1096 // default. 1097 enforceAccessPermission(); 1098 1099 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1100 1101 NetworkAgentInfo nai = getDefaultNetwork(); 1102 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1103 if (nc != null) { 1104 result.put(nai.network, nc); 1105 } 1106 1107 if (!mLockdownEnabled) { 1108 synchronized (mVpns) { 1109 Vpn vpn = mVpns.get(userId); 1110 if (vpn != null) { 1111 Network[] networks = vpn.getUnderlyingNetworks(); 1112 if (networks != null) { 1113 for (Network network : networks) { 1114 nai = getNetworkAgentInfoForNetwork(network); 1115 nc = getNetworkCapabilitiesInternal(nai); 1116 if (nc != null) { 1117 result.put(network, nc); 1118 } 1119 } 1120 } 1121 } 1122 } 1123 } 1124 1125 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1126 out = result.values().toArray(out); 1127 return out; 1128 } 1129 1130 @Override 1131 public boolean isNetworkSupported(int networkType) { 1132 enforceAccessPermission(); 1133 return mLegacyTypeTracker.isTypeSupported(networkType); 1134 } 1135 1136 /** 1137 * Return LinkProperties for the active (i.e., connected) default 1138 * network interface. It is assumed that at most one default network 1139 * is active at a time. If more than one is active, it is indeterminate 1140 * which will be returned. 1141 * @return the ip properties for the active network, or {@code null} if 1142 * none is active 1143 */ 1144 @Override 1145 public LinkProperties getActiveLinkProperties() { 1146 enforceAccessPermission(); 1147 final int uid = Binder.getCallingUid(); 1148 NetworkState state = getUnfilteredActiveNetworkState(uid); 1149 return state.linkProperties; 1150 } 1151 1152 @Override 1153 public LinkProperties getLinkPropertiesForType(int networkType) { 1154 enforceAccessPermission(); 1155 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1156 if (nai != null) { 1157 synchronized (nai) { 1158 return new LinkProperties(nai.linkProperties); 1159 } 1160 } 1161 return null; 1162 } 1163 1164 // TODO - this should be ALL networks 1165 @Override 1166 public LinkProperties getLinkProperties(Network network) { 1167 enforceAccessPermission(); 1168 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1169 if (nai != null) { 1170 synchronized (nai) { 1171 return new LinkProperties(nai.linkProperties); 1172 } 1173 } 1174 return null; 1175 } 1176 1177 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1178 if (nai != null) { 1179 synchronized (nai) { 1180 if (nai.networkCapabilities != null) { 1181 return new NetworkCapabilities(nai.networkCapabilities); 1182 } 1183 } 1184 } 1185 return null; 1186 } 1187 1188 @Override 1189 public NetworkCapabilities getNetworkCapabilities(Network network) { 1190 enforceAccessPermission(); 1191 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1192 } 1193 1194 @Override 1195 public NetworkState[] getAllNetworkState() { 1196 // Require internal since we're handing out IMSI details 1197 enforceConnectivityInternalPermission(); 1198 1199 final ArrayList<NetworkState> result = Lists.newArrayList(); 1200 for (Network network : getAllNetworks()) { 1201 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1202 if (nai != null) { 1203 synchronized (nai) { 1204 final String subscriberId = (nai.networkMisc != null) 1205 ? nai.networkMisc.subscriberId : null; 1206 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1207 nai.networkCapabilities, network, subscriberId, null)); 1208 } 1209 } 1210 } 1211 return result.toArray(new NetworkState[result.size()]); 1212 } 1213 1214 @Override 1215 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1216 enforceAccessPermission(); 1217 final int uid = Binder.getCallingUid(); 1218 final long token = Binder.clearCallingIdentity(); 1219 try { 1220 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1221 if (state.networkInfo != null) { 1222 try { 1223 return mPolicyManager.getNetworkQuotaInfo(state); 1224 } catch (RemoteException e) { 1225 } 1226 } 1227 return null; 1228 } finally { 1229 Binder.restoreCallingIdentity(token); 1230 } 1231 } 1232 1233 @Override 1234 public boolean isActiveNetworkMetered() { 1235 enforceAccessPermission(); 1236 final int uid = Binder.getCallingUid(); 1237 final long token = Binder.clearCallingIdentity(); 1238 try { 1239 return isActiveNetworkMeteredUnchecked(uid); 1240 } finally { 1241 Binder.restoreCallingIdentity(token); 1242 } 1243 } 1244 1245 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1246 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1247 if (state.networkInfo != null) { 1248 try { 1249 return mPolicyManager.isNetworkMetered(state); 1250 } catch (RemoteException e) { 1251 } 1252 } 1253 return false; 1254 } 1255 1256 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1257 @Override 1258 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1259 int deviceType = Integer.parseInt(label); 1260 sendDataActivityBroadcast(deviceType, active, tsNanos); 1261 } 1262 }; 1263 1264 /** 1265 * Ensure that a network route exists to deliver traffic to the specified 1266 * host via the specified network interface. 1267 * @param networkType the type of the network over which traffic to the 1268 * specified host is to be routed 1269 * @param hostAddress the IP address of the host to which the route is 1270 * desired 1271 * @return {@code true} on success, {@code false} on failure 1272 */ 1273 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1274 enforceChangePermission(); 1275 if (mProtectedNetworks.contains(networkType)) { 1276 enforceConnectivityInternalPermission(); 1277 } 1278 1279 InetAddress addr; 1280 try { 1281 addr = InetAddress.getByAddress(hostAddress); 1282 } catch (UnknownHostException e) { 1283 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1284 return false; 1285 } 1286 1287 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1288 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1289 return false; 1290 } 1291 1292 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1293 if (nai == null) { 1294 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1295 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1296 } else { 1297 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1298 } 1299 return false; 1300 } 1301 1302 DetailedState netState; 1303 synchronized (nai) { 1304 netState = nai.networkInfo.getDetailedState(); 1305 } 1306 1307 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1308 if (VDBG) { 1309 log("requestRouteToHostAddress on down network " 1310 + "(" + networkType + ") - dropped" 1311 + " netState=" + netState); 1312 } 1313 return false; 1314 } 1315 1316 final int uid = Binder.getCallingUid(); 1317 final long token = Binder.clearCallingIdentity(); 1318 try { 1319 LinkProperties lp; 1320 int netId; 1321 synchronized (nai) { 1322 lp = nai.linkProperties; 1323 netId = nai.network.netId; 1324 } 1325 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1326 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1327 return ok; 1328 } finally { 1329 Binder.restoreCallingIdentity(token); 1330 } 1331 } 1332 1333 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1334 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1335 if (bestRoute == null) { 1336 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1337 } else { 1338 String iface = bestRoute.getInterface(); 1339 if (bestRoute.getGateway().equals(addr)) { 1340 // if there is no better route, add the implied hostroute for our gateway 1341 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1342 } else { 1343 // if we will connect to this through another route, add a direct route 1344 // to it's gateway 1345 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1346 } 1347 } 1348 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1349 try { 1350 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1351 } catch (Exception e) { 1352 // never crash - catch them all 1353 if (DBG) loge("Exception trying to add a route: " + e); 1354 return false; 1355 } 1356 return true; 1357 } 1358 1359 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1360 @Override 1361 public void onUidRulesChanged(int uid, int uidRules) { 1362 // caller is NPMS, since we only register with them 1363 if (LOGD_RULES) { 1364 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1365 } 1366 1367 synchronized (mRulesLock) { 1368 // skip update when we've already applied rules 1369 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1370 if (oldRules == uidRules) return; 1371 1372 mUidRules.put(uid, uidRules); 1373 } 1374 1375 // TODO: notify UID when it has requested targeted updates 1376 } 1377 1378 @Override 1379 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1380 // caller is NPMS, since we only register with them 1381 if (LOGD_RULES) { 1382 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1383 } 1384 1385 synchronized (mRulesLock) { 1386 mMeteredIfaces.clear(); 1387 for (String iface : meteredIfaces) { 1388 mMeteredIfaces.add(iface); 1389 } 1390 } 1391 } 1392 1393 @Override 1394 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1395 // caller is NPMS, since we only register with them 1396 if (LOGD_RULES) { 1397 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1398 } 1399 } 1400 }; 1401 1402 /** 1403 * Require that the caller is either in the same user or has appropriate permission to interact 1404 * across users. 1405 * 1406 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1407 */ 1408 private void enforceCrossUserPermission(int userId) { 1409 if (userId == UserHandle.getCallingUserId()) { 1410 // Not a cross-user call. 1411 return; 1412 } 1413 mContext.enforceCallingOrSelfPermission( 1414 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1415 "ConnectivityService"); 1416 } 1417 1418 private void enforceInternetPermission() { 1419 mContext.enforceCallingOrSelfPermission( 1420 android.Manifest.permission.INTERNET, 1421 "ConnectivityService"); 1422 } 1423 1424 private void enforceAccessPermission() { 1425 mContext.enforceCallingOrSelfPermission( 1426 android.Manifest.permission.ACCESS_NETWORK_STATE, 1427 "ConnectivityService"); 1428 } 1429 1430 private void enforceChangePermission() { 1431 mContext.enforceCallingOrSelfPermission( 1432 android.Manifest.permission.CHANGE_NETWORK_STATE, 1433 "ConnectivityService"); 1434 } 1435 1436 private void enforceTetherAccessPermission() { 1437 mContext.enforceCallingOrSelfPermission( 1438 android.Manifest.permission.ACCESS_NETWORK_STATE, 1439 "ConnectivityService"); 1440 } 1441 1442 private void enforceConnectivityInternalPermission() { 1443 mContext.enforceCallingOrSelfPermission( 1444 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1445 "ConnectivityService"); 1446 } 1447 1448 public void sendConnectedBroadcast(NetworkInfo info) { 1449 enforceConnectivityInternalPermission(); 1450 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1451 } 1452 1453 private void sendInetConditionBroadcast(NetworkInfo info) { 1454 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1455 } 1456 1457 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1458 if (mLockdownTracker != null) { 1459 info = mLockdownTracker.augmentNetworkInfo(info); 1460 } 1461 1462 Intent intent = new Intent(bcastType); 1463 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1464 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1465 if (info.isFailover()) { 1466 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1467 info.setFailover(false); 1468 } 1469 if (info.getReason() != null) { 1470 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1471 } 1472 if (info.getExtraInfo() != null) { 1473 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1474 info.getExtraInfo()); 1475 } 1476 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1477 return intent; 1478 } 1479 1480 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1481 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1482 } 1483 1484 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1485 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1486 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1487 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1488 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1489 final long ident = Binder.clearCallingIdentity(); 1490 try { 1491 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1492 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1493 } finally { 1494 Binder.restoreCallingIdentity(ident); 1495 } 1496 } 1497 1498 private void sendStickyBroadcast(Intent intent) { 1499 synchronized(this) { 1500 if (!mSystemReady) { 1501 mInitialBroadcast = new Intent(intent); 1502 } 1503 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1504 if (DBG) { 1505 log("sendStickyBroadcast: action=" + intent.getAction()); 1506 } 1507 1508 final long ident = Binder.clearCallingIdentity(); 1509 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1510 final IBatteryStats bs = BatteryStatsService.getService(); 1511 try { 1512 NetworkInfo ni = intent.getParcelableExtra( 1513 ConnectivityManager.EXTRA_NETWORK_INFO); 1514 bs.noteConnectivityChanged(intent.getIntExtra( 1515 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1516 ni != null ? ni.getState().toString() : "?"); 1517 } catch (RemoteException e) { 1518 } 1519 } 1520 try { 1521 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1522 } finally { 1523 Binder.restoreCallingIdentity(ident); 1524 } 1525 } 1526 } 1527 1528 void systemReady() { 1529 loadGlobalProxy(); 1530 1531 synchronized(this) { 1532 mSystemReady = true; 1533 if (mInitialBroadcast != null) { 1534 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1535 mInitialBroadcast = null; 1536 } 1537 } 1538 // load the global proxy at startup 1539 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1540 1541 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1542 // for user to unlock device. 1543 if (!updateLockdownVpn()) { 1544 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1545 mContext.registerReceiver(mUserPresentReceiver, filter); 1546 } 1547 1548 // Configure whether mobile data is always on. 1549 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1550 1551 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1552 1553 mPermissionMonitor.startMonitoring(); 1554 } 1555 1556 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1557 @Override 1558 public void onReceive(Context context, Intent intent) { 1559 // Try creating lockdown tracker, since user present usually means 1560 // unlocked keystore. 1561 if (updateLockdownVpn()) { 1562 mContext.unregisterReceiver(this); 1563 } 1564 } 1565 }; 1566 1567 /** @hide */ 1568 @Override 1569 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1570 enforceConnectivityInternalPermission(); 1571 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1572// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1573 } 1574 1575 /** 1576 * Setup data activity tracking for the given network. 1577 * 1578 * Every {@code setupDataActivityTracking} should be paired with a 1579 * {@link #removeDataActivityTracking} for cleanup. 1580 */ 1581 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1582 final String iface = networkAgent.linkProperties.getInterfaceName(); 1583 1584 final int timeout; 1585 int type = ConnectivityManager.TYPE_NONE; 1586 1587 if (networkAgent.networkCapabilities.hasTransport( 1588 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1589 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1590 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1591 5); 1592 type = ConnectivityManager.TYPE_MOBILE; 1593 } else if (networkAgent.networkCapabilities.hasTransport( 1594 NetworkCapabilities.TRANSPORT_WIFI)) { 1595 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1596 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1597 5); 1598 type = ConnectivityManager.TYPE_WIFI; 1599 } else { 1600 // do not track any other networks 1601 timeout = 0; 1602 } 1603 1604 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1605 try { 1606 mNetd.addIdleTimer(iface, timeout, type); 1607 } catch (Exception e) { 1608 // You shall not crash! 1609 loge("Exception in setupDataActivityTracking " + e); 1610 } 1611 } 1612 } 1613 1614 /** 1615 * Remove data activity tracking when network disconnects. 1616 */ 1617 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1618 final String iface = networkAgent.linkProperties.getInterfaceName(); 1619 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1620 1621 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1622 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1623 try { 1624 // the call fails silently if no idletimer setup for this interface 1625 mNetd.removeIdleTimer(iface); 1626 } catch (Exception e) { 1627 loge("Exception in removeDataActivityTracking " + e); 1628 } 1629 } 1630 } 1631 1632 /** 1633 * Reads the network specific MTU size from reources. 1634 * and set it on it's iface. 1635 */ 1636 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1637 final String iface = newLp.getInterfaceName(); 1638 final int mtu = newLp.getMtu(); 1639 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1640 if (VDBG) log("identical MTU - not setting"); 1641 return; 1642 } 1643 1644 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1645 loge("Unexpected mtu value: " + mtu + ", " + iface); 1646 return; 1647 } 1648 1649 // Cannot set MTU without interface name 1650 if (TextUtils.isEmpty(iface)) { 1651 loge("Setting MTU size with null iface."); 1652 return; 1653 } 1654 1655 try { 1656 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1657 mNetd.setMtu(iface, mtu); 1658 } catch (Exception e) { 1659 Slog.e(TAG, "exception in setMtu()" + e); 1660 } 1661 } 1662 1663 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1664 1665 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1666 if (isDefaultNetwork(nai) == false) { 1667 return; 1668 } 1669 1670 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1671 String[] values = null; 1672 if (tcpBufferSizes != null) { 1673 values = tcpBufferSizes.split(","); 1674 } 1675 1676 if (values == null || values.length != 6) { 1677 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1678 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1679 values = tcpBufferSizes.split(","); 1680 } 1681 1682 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1683 1684 try { 1685 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1686 1687 final String prefix = "/sys/kernel/ipv4/tcp_"; 1688 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1689 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1690 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1691 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1692 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1693 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1694 mCurrentTcpBufferSizes = tcpBufferSizes; 1695 } catch (IOException e) { 1696 loge("Can't set TCP buffer sizes:" + e); 1697 } 1698 1699 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 1700 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 1701 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1702 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 1703 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1704 if (rwndValue != 0) { 1705 SystemProperties.set(sysctlKey, rwndValue.toString()); 1706 } 1707 } 1708 1709 private void flushVmDnsCache() { 1710 /* 1711 * Tell the VMs to toss their DNS caches 1712 */ 1713 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1714 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1715 /* 1716 * Connectivity events can happen before boot has completed ... 1717 */ 1718 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1719 final long ident = Binder.clearCallingIdentity(); 1720 try { 1721 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1722 } finally { 1723 Binder.restoreCallingIdentity(ident); 1724 } 1725 } 1726 1727 @Override 1728 public int getRestoreDefaultNetworkDelay(int networkType) { 1729 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1730 NETWORK_RESTORE_DELAY_PROP_NAME); 1731 if(restoreDefaultNetworkDelayStr != null && 1732 restoreDefaultNetworkDelayStr.length() != 0) { 1733 try { 1734 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1735 } catch (NumberFormatException e) { 1736 } 1737 } 1738 // if the system property isn't set, use the value for the apn type 1739 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1740 1741 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1742 (mNetConfigs[networkType] != null)) { 1743 ret = mNetConfigs[networkType].restoreTime; 1744 } 1745 return ret; 1746 } 1747 1748 @Override 1749 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1750 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1751 if (mContext.checkCallingOrSelfPermission( 1752 android.Manifest.permission.DUMP) 1753 != PackageManager.PERMISSION_GRANTED) { 1754 pw.println("Permission Denial: can't dump ConnectivityService " + 1755 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1756 Binder.getCallingUid()); 1757 return; 1758 } 1759 1760 pw.print("NetworkFactories for:"); 1761 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1762 pw.print(" " + nfi.name); 1763 } 1764 pw.println(); 1765 pw.println(); 1766 1767 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1768 pw.print("Active default network: "); 1769 if (defaultNai == null) { 1770 pw.println("none"); 1771 } else { 1772 pw.println(defaultNai.network.netId); 1773 } 1774 pw.println(); 1775 1776 pw.println("Current Networks:"); 1777 pw.increaseIndent(); 1778 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1779 pw.println(nai.toString()); 1780 pw.increaseIndent(); 1781 pw.println("Requests:"); 1782 pw.increaseIndent(); 1783 for (int i = 0; i < nai.networkRequests.size(); i++) { 1784 pw.println(nai.networkRequests.valueAt(i).toString()); 1785 } 1786 pw.decreaseIndent(); 1787 pw.println("Lingered:"); 1788 pw.increaseIndent(); 1789 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1790 pw.decreaseIndent(); 1791 pw.decreaseIndent(); 1792 } 1793 pw.decreaseIndent(); 1794 pw.println(); 1795 1796 pw.println("Network Requests:"); 1797 pw.increaseIndent(); 1798 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1799 pw.println(nri.toString()); 1800 } 1801 pw.println(); 1802 pw.decreaseIndent(); 1803 1804 mLegacyTypeTracker.dump(pw); 1805 1806 synchronized (this) { 1807 pw.print("mNetTransitionWakeLock: currently " + 1808 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1809 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1810 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1811 } else { 1812 pw.println(", last requested never"); 1813 } 1814 } 1815 pw.println(); 1816 1817 mTethering.dump(fd, pw, args); 1818 1819 if (mInetLog != null && mInetLog.size() > 0) { 1820 pw.println(); 1821 pw.println("Inet condition reports:"); 1822 pw.increaseIndent(); 1823 for(int i = 0; i < mInetLog.size(); i++) { 1824 pw.println(mInetLog.get(i)); 1825 } 1826 pw.decreaseIndent(); 1827 } 1828 } 1829 1830 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1831 if (nai.network == null) return false; 1832 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1833 if (officialNai != null && officialNai.equals(nai)) return true; 1834 if (officialNai != null || VDBG) { 1835 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1836 " - " + nai); 1837 } 1838 return false; 1839 } 1840 1841 private boolean isRequest(NetworkRequest request) { 1842 return mNetworkRequests.get(request).isRequest; 1843 } 1844 1845 // must be stateless - things change under us. 1846 private class NetworkStateTrackerHandler extends Handler { 1847 public NetworkStateTrackerHandler(Looper looper) { 1848 super(looper); 1849 } 1850 1851 @Override 1852 public void handleMessage(Message msg) { 1853 NetworkInfo info; 1854 switch (msg.what) { 1855 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1856 handleAsyncChannelHalfConnect(msg); 1857 break; 1858 } 1859 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1860 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1861 if (nai != null) nai.asyncChannel.disconnect(); 1862 break; 1863 } 1864 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1865 handleAsyncChannelDisconnected(msg); 1866 break; 1867 } 1868 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1869 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1870 if (nai == null) { 1871 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1872 } else { 1873 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1874 } 1875 break; 1876 } 1877 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1878 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1879 if (nai == null) { 1880 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1881 } else { 1882 if (VDBG) { 1883 log("Update of LinkProperties for " + nai.name() + 1884 "; created=" + nai.created); 1885 } 1886 LinkProperties oldLp = nai.linkProperties; 1887 synchronized (nai) { 1888 nai.linkProperties = (LinkProperties)msg.obj; 1889 } 1890 if (nai.created) updateLinkProperties(nai, oldLp); 1891 } 1892 break; 1893 } 1894 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1895 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1896 if (nai == null) { 1897 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1898 break; 1899 } 1900 info = (NetworkInfo) msg.obj; 1901 updateNetworkInfo(nai, info); 1902 break; 1903 } 1904 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1905 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1906 if (nai == null) { 1907 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1908 break; 1909 } 1910 Integer score = (Integer) msg.obj; 1911 if (score != null) updateNetworkScore(nai, score.intValue()); 1912 break; 1913 } 1914 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1915 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1916 if (nai == null) { 1917 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1918 break; 1919 } 1920 try { 1921 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1922 } catch (Exception e) { 1923 // Never crash! 1924 loge("Exception in addVpnUidRanges: " + e); 1925 } 1926 break; 1927 } 1928 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1929 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1930 if (nai == null) { 1931 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1932 break; 1933 } 1934 try { 1935 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1936 } catch (Exception e) { 1937 // Never crash! 1938 loge("Exception in removeVpnUidRanges: " + e); 1939 } 1940 break; 1941 } 1942 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1943 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1944 if (nai == null) { 1945 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1946 break; 1947 } 1948 if (nai.created && !nai.networkMisc.explicitlySelected) { 1949 loge("ERROR: created network explicitly selected."); 1950 } 1951 nai.networkMisc.explicitlySelected = true; 1952 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 1953 break; 1954 } 1955 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1956 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1957 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_TESTED")) { 1958 final boolean valid = 1959 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1960 final boolean validationChanged = (valid != nai.lastValidated); 1961 nai.lastValidated = valid; 1962 if (valid) { 1963 if (DBG) log("Validated " + nai.name()); 1964 nai.networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 1965 if (!nai.everValidated) { 1966 nai.everValidated = true; 1967 rematchNetworkAndRequests(nai, NascentState.JUST_VALIDATED, 1968 ReapUnvalidatedNetworks.REAP); 1969 // If score has changed, rebroadcast to NetworkFactories. b/17726566 1970 sendUpdatedScoreToFactories(nai); 1971 } 1972 } else { 1973 nai.networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 1974 } 1975 updateInetCondition(nai); 1976 // Let the NetworkAgent know the state of its network 1977 nai.asyncChannel.sendMessage( 1978 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 1979 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 1980 0, null); 1981 1982 if (validationChanged) { 1983 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 1984 } 1985 } 1986 break; 1987 } 1988 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 1989 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1990 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 1991 handleLingerComplete(nai); 1992 } 1993 break; 1994 } 1995 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 1996 if (msg.arg1 == 0) { 1997 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 1998 } else { 1999 final NetworkAgentInfo nai; 2000 synchronized (mNetworkForNetId) { 2001 nai = mNetworkForNetId.get(msg.arg2); 2002 } 2003 if (nai == null) { 2004 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2005 break; 2006 } 2007 nai.captivePortalDetected = true; 2008 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 2009 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 2010 } 2011 break; 2012 } 2013 } 2014 } 2015 } 2016 2017 // Cancel any lingering so the linger timeout doesn't teardown a network. 2018 // This should be called when a network begins satisfying a NetworkRequest. 2019 // Note: depending on what state the NetworkMonitor is in (e.g., 2020 // if it's awaiting captive portal login, or if validation failed), this 2021 // may trigger a re-evaluation of the network. 2022 private void unlinger(NetworkAgentInfo nai) { 2023 if (VDBG) log("Canceling linger of " + nai.name()); 2024 // If network has never been validated, it cannot have been lingered, so don't bother 2025 // needlessly triggering a re-evaluation. 2026 if (!nai.everValidated) return; 2027 nai.networkLingered.clear(); 2028 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2029 } 2030 2031 private void handleAsyncChannelHalfConnect(Message msg) { 2032 AsyncChannel ac = (AsyncChannel) msg.obj; 2033 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2034 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2035 if (VDBG) log("NetworkFactory connected"); 2036 // A network factory has connected. Send it all current NetworkRequests. 2037 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2038 if (nri.isRequest == false) continue; 2039 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2040 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2041 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2042 } 2043 } else { 2044 loge("Error connecting NetworkFactory"); 2045 mNetworkFactoryInfos.remove(msg.obj); 2046 } 2047 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2048 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2049 if (VDBG) log("NetworkAgent connected"); 2050 // A network agent has requested a connection. Establish the connection. 2051 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2052 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2053 } else { 2054 loge("Error connecting NetworkAgent"); 2055 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2056 if (nai != null) { 2057 final boolean wasDefault = isDefaultNetwork(nai); 2058 synchronized (mNetworkForNetId) { 2059 mNetworkForNetId.remove(nai.network.netId); 2060 mNetIdInUse.delete(nai.network.netId); 2061 } 2062 // Just in case. 2063 mLegacyTypeTracker.remove(nai, wasDefault); 2064 } 2065 } 2066 } 2067 } 2068 2069 private void handleAsyncChannelDisconnected(Message msg) { 2070 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2071 if (nai != null) { 2072 if (DBG) { 2073 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2074 } 2075 // A network agent has disconnected. 2076 if (nai.created) { 2077 // Tell netd to clean up the configuration for this network 2078 // (routing rules, DNS, etc). 2079 try { 2080 mNetd.removeNetwork(nai.network.netId); 2081 } catch (Exception e) { 2082 loge("Exception removing network: " + e); 2083 } 2084 } 2085 // TODO - if we move the logic to the network agent (have them disconnect 2086 // because they lost all their requests or because their score isn't good) 2087 // then they would disconnect organically, report their new state and then 2088 // disconnect the channel. 2089 if (nai.networkInfo.isConnected()) { 2090 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2091 null, null); 2092 } 2093 final boolean wasDefault = isDefaultNetwork(nai); 2094 if (wasDefault) { 2095 mDefaultInetConditionPublished = 0; 2096 } 2097 notifyIfacesChanged(); 2098 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2099 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2100 mNetworkAgentInfos.remove(msg.replyTo); 2101 updateClat(null, nai.linkProperties, nai); 2102 synchronized (mNetworkForNetId) { 2103 mNetworkForNetId.remove(nai.network.netId); 2104 mNetIdInUse.delete(nai.network.netId); 2105 } 2106 // Since we've lost the network, go through all the requests that 2107 // it was satisfying and see if any other factory can satisfy them. 2108 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2109 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2110 for (int i = 0; i < nai.networkRequests.size(); i++) { 2111 NetworkRequest request = nai.networkRequests.valueAt(i); 2112 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2113 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2114 if (DBG) { 2115 log("Checking for replacement network to handle request " + request ); 2116 } 2117 mNetworkForRequestId.remove(request.requestId); 2118 sendUpdatedScoreToFactories(request, 0); 2119 NetworkAgentInfo alternative = null; 2120 for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) { 2121 if (existing.satisfies(request) && 2122 (alternative == null || 2123 alternative.getCurrentScore() < existing.getCurrentScore())) { 2124 alternative = existing; 2125 } 2126 } 2127 if (alternative != null) { 2128 if (DBG) log(" found replacement in " + alternative.name()); 2129 if (!toActivate.contains(alternative)) { 2130 toActivate.add(alternative); 2131 } 2132 } 2133 } 2134 } 2135 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2136 removeDataActivityTracking(nai); 2137 notifyLockdownVpn(nai); 2138 requestNetworkTransitionWakelock(nai.name()); 2139 } 2140 mLegacyTypeTracker.remove(nai, wasDefault); 2141 for (NetworkAgentInfo networkToActivate : toActivate) { 2142 unlinger(networkToActivate); 2143 rematchNetworkAndRequests(networkToActivate, NascentState.NOT_JUST_VALIDATED, 2144 ReapUnvalidatedNetworks.DONT_REAP); 2145 } 2146 } 2147 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2148 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2149 } 2150 2151 // If this method proves to be too slow then we can maintain a separate 2152 // pendingIntent => NetworkRequestInfo map. 2153 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2154 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2155 Intent intent = pendingIntent.getIntent(); 2156 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2157 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2158 if (existingPendingIntent != null && 2159 existingPendingIntent.getIntent().filterEquals(intent)) { 2160 return entry.getValue(); 2161 } 2162 } 2163 return null; 2164 } 2165 2166 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2167 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2168 2169 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2170 if (existingRequest != null) { // remove the existing request. 2171 if (DBG) log("Replacing " + existingRequest.request + " with " 2172 + nri.request + " because their intents matched."); 2173 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2174 } 2175 handleRegisterNetworkRequest(nri); 2176 } 2177 2178 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2179 mNetworkRequests.put(nri.request, nri); 2180 2181 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2182 2183 // Check for the best currently alive network that satisfies this request 2184 NetworkAgentInfo bestNetwork = null; 2185 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2186 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2187 if (network.satisfies(nri.request)) { 2188 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2189 if (!nri.isRequest) { 2190 // Not setting bestNetwork here as a listening NetworkRequest may be 2191 // satisfied by multiple Networks. Instead the request is added to 2192 // each satisfying Network and notified about each. 2193 network.addRequest(nri.request); 2194 notifyNetworkCallback(network, nri); 2195 } else if (bestNetwork == null || 2196 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2197 bestNetwork = network; 2198 } 2199 } 2200 } 2201 if (bestNetwork != null) { 2202 if (DBG) log("using " + bestNetwork.name()); 2203 unlinger(bestNetwork); 2204 bestNetwork.addRequest(nri.request); 2205 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2206 notifyNetworkCallback(bestNetwork, nri); 2207 if (nri.request.legacyType != TYPE_NONE) { 2208 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2209 } 2210 } 2211 2212 if (nri.isRequest) { 2213 if (DBG) log("sending new NetworkRequest to factories"); 2214 final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore(); 2215 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2216 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2217 0, nri.request); 2218 } 2219 } 2220 } 2221 2222 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2223 int callingUid) { 2224 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2225 if (nri != null) { 2226 handleReleaseNetworkRequest(nri.request, callingUid); 2227 } 2228 } 2229 2230 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2231 // For validated Networks this is simply whether it is satsifying any NetworkRequests. 2232 // For unvalidated Networks this is whether it is satsifying any NetworkRequests or 2233 // were it to become validated, would it have a chance of satisfying any NetworkRequests. 2234 private boolean unneeded(NetworkAgentInfo nai) { 2235 if (!nai.created || nai.isVPN()) return false; 2236 boolean unneeded = true; 2237 if (nai.everValidated) { 2238 for (int i = 0; i < nai.networkRequests.size() && unneeded; i++) { 2239 final NetworkRequest nr = nai.networkRequests.valueAt(i); 2240 try { 2241 if (isRequest(nr)) unneeded = false; 2242 } catch (Exception e) { 2243 loge("Request " + nr + " not found in mNetworkRequests."); 2244 loge(" it came from request list of " + nai.name()); 2245 } 2246 } 2247 } else { 2248 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2249 // If this Network is already the highest scoring Network for a request, or if 2250 // there is hope for it to become one if it validated, then it is needed. 2251 if (nri.isRequest && nai.satisfies(nri.request) && 2252 (nai.networkRequests.get(nri.request.requestId) != null || 2253 // Note that this catches two important cases: 2254 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2255 // is currently satisfying the request. This is desirable when 2256 // cellular ends up validating but WiFi does not. 2257 // 2. Unvalidated WiFi will not be reaped when validated cellular 2258 // is currently satsifying the request. This is desirable when 2259 // WiFi ends up validating and out scoring cellular. 2260 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2261 nai.getCurrentScoreAsValidated())) { 2262 unneeded = false; 2263 break; 2264 } 2265 } 2266 } 2267 return unneeded; 2268 } 2269 2270 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2271 NetworkRequestInfo nri = mNetworkRequests.get(request); 2272 if (nri != null) { 2273 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2274 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2275 return; 2276 } 2277 if (DBG) log("releasing NetworkRequest " + request); 2278 nri.unlinkDeathRecipient(); 2279 mNetworkRequests.remove(request); 2280 if (nri.isRequest) { 2281 // Find all networks that are satisfying this request and remove the request 2282 // from their request lists. 2283 // TODO - it's my understanding that for a request there is only a single 2284 // network satisfying it, so this loop is wasteful 2285 boolean wasKept = false; 2286 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2287 if (nai.networkRequests.get(nri.request.requestId) != null) { 2288 nai.networkRequests.remove(nri.request.requestId); 2289 if (DBG) { 2290 log(" Removing from current network " + nai.name() + 2291 ", leaving " + nai.networkRequests.size() + 2292 " requests."); 2293 } 2294 if (unneeded(nai)) { 2295 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2296 teardownUnneededNetwork(nai); 2297 } else { 2298 // suspect there should only be one pass through here 2299 // but if any were kept do the check below 2300 wasKept |= true; 2301 } 2302 } 2303 } 2304 2305 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2306 if (nai != null) { 2307 mNetworkForRequestId.remove(nri.request.requestId); 2308 } 2309 // Maintain the illusion. When this request arrived, we might have pretended 2310 // that a network connected to serve it, even though the network was already 2311 // connected. Now that this request has gone away, we might have to pretend 2312 // that the network disconnected. LegacyTypeTracker will generate that 2313 // phantom disconnect for this type. 2314 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2315 boolean doRemove = true; 2316 if (wasKept) { 2317 // check if any of the remaining requests for this network are for the 2318 // same legacy type - if so, don't remove the nai 2319 for (int i = 0; i < nai.networkRequests.size(); i++) { 2320 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2321 if (otherRequest.legacyType == nri.request.legacyType && 2322 isRequest(otherRequest)) { 2323 if (DBG) log(" still have other legacy request - leaving"); 2324 doRemove = false; 2325 } 2326 } 2327 } 2328 2329 if (doRemove) { 2330 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2331 } 2332 } 2333 2334 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2335 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2336 nri.request); 2337 } 2338 } else { 2339 // listens don't have a singular affectedNetwork. Check all networks to see 2340 // if this listen request applies and remove it. 2341 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2342 nai.networkRequests.remove(nri.request.requestId); 2343 } 2344 } 2345 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2346 } 2347 } 2348 2349 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2350 enforceConnectivityInternalPermission(); 2351 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2352 accept ? 1 : 0, always ? 1: 0, network)); 2353 } 2354 2355 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2356 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2357 " accept=" + accept + " always=" + always); 2358 2359 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2360 if (nai == null) { 2361 // Nothing to do. 2362 return; 2363 } 2364 2365 if (nai.everValidated) { 2366 // The network validated while the dialog box was up. Don't make any changes. There's a 2367 // TODO in the dialog code to make it go away if the network validates; once that's 2368 // implemented, taking action here will be confusing. 2369 return; 2370 } 2371 2372 if (!nai.networkMisc.explicitlySelected) { 2373 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2374 } 2375 2376 if (accept != nai.networkMisc.acceptUnvalidated) { 2377 int oldScore = nai.getCurrentScore(); 2378 nai.networkMisc.acceptUnvalidated = accept; 2379 rematchAllNetworksAndRequests(nai, oldScore); 2380 sendUpdatedScoreToFactories(nai); 2381 } 2382 2383 if (always) { 2384 nai.asyncChannel.sendMessage( 2385 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2386 } 2387 2388 // TODO: should we also disconnect from the network if accept is false? 2389 } 2390 2391 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2392 mHandler.sendMessageDelayed( 2393 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2394 PROMPT_UNVALIDATED_DELAY_MS); 2395 } 2396 2397 private void handlePromptUnvalidated(Network network) { 2398 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2399 2400 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2401 // we haven't already been told to switch to it regardless of whether it validated or not. 2402 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2403 if (nai == null || nai.everValidated || nai.captivePortalDetected || 2404 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2405 return; 2406 } 2407 2408 // TODO: What should we do if we've already switched to this network because we had no 2409 // better option? There are two obvious alternatives. 2410 // 2411 // 1. Decide that there's no point prompting because this is our only usable network. 2412 // However, because we didn't prompt, if later on a validated network comes along, we'll 2413 // either a) silently switch to it - bad if the user wanted to connect to stay on this 2414 // unvalidated network - or b) prompt the user at that later time - bad because the user 2415 // might not understand why they are now being prompted. 2416 // 2417 // 2. Always prompt the user, even if we have no other network to use. The user could then 2418 // try to find an alternative network to join (remember, if we got here, then the user 2419 // selected this network manually). This is bad because the prompt isn't really very 2420 // useful. 2421 // 2422 // For now we do #1, but we can revisit that later. 2423 if (isDefaultNetwork(nai)) { 2424 return; 2425 } 2426 2427 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2428 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, network); 2429 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2430 intent.setClassName("com.android.settings", 2431 "com.android.settings.wifi.WifiNoInternetDialog"); 2432 mContext.startActivityAsUser(intent, UserHandle.CURRENT); 2433 } 2434 2435 private class InternalHandler extends Handler { 2436 public InternalHandler(Looper looper) { 2437 super(looper); 2438 } 2439 2440 @Override 2441 public void handleMessage(Message msg) { 2442 switch (msg.what) { 2443 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2444 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2445 String causedBy = null; 2446 synchronized (ConnectivityService.this) { 2447 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2448 mNetTransitionWakeLock.isHeld()) { 2449 mNetTransitionWakeLock.release(); 2450 causedBy = mNetTransitionWakeLockCausedBy; 2451 } else { 2452 break; 2453 } 2454 } 2455 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2456 log("Failed to find a new network - expiring NetTransition Wakelock"); 2457 } else { 2458 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2459 " cleared because we found a replacement network"); 2460 } 2461 break; 2462 } 2463 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2464 handleDeprecatedGlobalHttpProxy(); 2465 break; 2466 } 2467 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2468 Intent intent = (Intent)msg.obj; 2469 sendStickyBroadcast(intent); 2470 break; 2471 } 2472 case EVENT_PROXY_HAS_CHANGED: { 2473 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2474 break; 2475 } 2476 case EVENT_REGISTER_NETWORK_FACTORY: { 2477 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2478 break; 2479 } 2480 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2481 handleUnregisterNetworkFactory((Messenger)msg.obj); 2482 break; 2483 } 2484 case EVENT_REGISTER_NETWORK_AGENT: { 2485 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2486 break; 2487 } 2488 case EVENT_REGISTER_NETWORK_REQUEST: 2489 case EVENT_REGISTER_NETWORK_LISTENER: { 2490 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2491 break; 2492 } 2493 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: { 2494 handleRegisterNetworkRequestWithIntent(msg); 2495 break; 2496 } 2497 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2498 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2499 break; 2500 } 2501 case EVENT_RELEASE_NETWORK_REQUEST: { 2502 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2503 break; 2504 } 2505 case EVENT_SET_ACCEPT_UNVALIDATED: { 2506 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2507 break; 2508 } 2509 case EVENT_PROMPT_UNVALIDATED: { 2510 handlePromptUnvalidated((Network) msg.obj); 2511 break; 2512 } 2513 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2514 handleMobileDataAlwaysOn(); 2515 break; 2516 } 2517 case EVENT_SYSTEM_READY: { 2518 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2519 nai.networkMonitor.systemReady = true; 2520 } 2521 break; 2522 } 2523 } 2524 } 2525 } 2526 2527 // javadoc from interface 2528 public int tether(String iface) { 2529 ConnectivityManager.enforceTetherChangePermission(mContext); 2530 if (isTetheringSupported()) { 2531 return mTethering.tether(iface); 2532 } else { 2533 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2534 } 2535 } 2536 2537 // javadoc from interface 2538 public int untether(String iface) { 2539 ConnectivityManager.enforceTetherChangePermission(mContext); 2540 2541 if (isTetheringSupported()) { 2542 return mTethering.untether(iface); 2543 } else { 2544 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2545 } 2546 } 2547 2548 // javadoc from interface 2549 public int getLastTetherError(String iface) { 2550 enforceTetherAccessPermission(); 2551 2552 if (isTetheringSupported()) { 2553 return mTethering.getLastTetherError(iface); 2554 } else { 2555 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2556 } 2557 } 2558 2559 // TODO - proper iface API for selection by property, inspection, etc 2560 public String[] getTetherableUsbRegexs() { 2561 enforceTetherAccessPermission(); 2562 if (isTetheringSupported()) { 2563 return mTethering.getTetherableUsbRegexs(); 2564 } else { 2565 return new String[0]; 2566 } 2567 } 2568 2569 public String[] getTetherableWifiRegexs() { 2570 enforceTetherAccessPermission(); 2571 if (isTetheringSupported()) { 2572 return mTethering.getTetherableWifiRegexs(); 2573 } else { 2574 return new String[0]; 2575 } 2576 } 2577 2578 public String[] getTetherableBluetoothRegexs() { 2579 enforceTetherAccessPermission(); 2580 if (isTetheringSupported()) { 2581 return mTethering.getTetherableBluetoothRegexs(); 2582 } else { 2583 return new String[0]; 2584 } 2585 } 2586 2587 public int setUsbTethering(boolean enable) { 2588 ConnectivityManager.enforceTetherChangePermission(mContext); 2589 if (isTetheringSupported()) { 2590 return mTethering.setUsbTethering(enable); 2591 } else { 2592 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2593 } 2594 } 2595 2596 // TODO - move iface listing, queries, etc to new module 2597 // javadoc from interface 2598 public String[] getTetherableIfaces() { 2599 enforceTetherAccessPermission(); 2600 return mTethering.getTetherableIfaces(); 2601 } 2602 2603 public String[] getTetheredIfaces() { 2604 enforceTetherAccessPermission(); 2605 return mTethering.getTetheredIfaces(); 2606 } 2607 2608 public String[] getTetheringErroredIfaces() { 2609 enforceTetherAccessPermission(); 2610 return mTethering.getErroredIfaces(); 2611 } 2612 2613 public String[] getTetheredDhcpRanges() { 2614 enforceConnectivityInternalPermission(); 2615 return mTethering.getTetheredDhcpRanges(); 2616 } 2617 2618 // if ro.tether.denied = true we default to no tethering 2619 // gservices could set the secure setting to 1 though to enable it on a build where it 2620 // had previously been turned off. 2621 public boolean isTetheringSupported() { 2622 enforceTetherAccessPermission(); 2623 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2624 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2625 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2626 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2627 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2628 mTethering.getTetherableWifiRegexs().length != 0 || 2629 mTethering.getTetherableBluetoothRegexs().length != 0) && 2630 mTethering.getUpstreamIfaceTypes().length != 0); 2631 } 2632 2633 // Called when we lose the default network and have no replacement yet. 2634 // This will automatically be cleared after X seconds or a new default network 2635 // becomes CONNECTED, whichever happens first. The timer is started by the 2636 // first caller and not restarted by subsequent callers. 2637 private void requestNetworkTransitionWakelock(String forWhom) { 2638 int serialNum = 0; 2639 synchronized (this) { 2640 if (mNetTransitionWakeLock.isHeld()) return; 2641 serialNum = ++mNetTransitionWakeLockSerialNumber; 2642 mNetTransitionWakeLock.acquire(); 2643 mNetTransitionWakeLockCausedBy = forWhom; 2644 } 2645 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2646 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2647 mNetTransitionWakeLockTimeout); 2648 return; 2649 } 2650 2651 // 100 percent is full good, 0 is full bad. 2652 public void reportInetCondition(int networkType, int percentage) { 2653 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2654 if (nai == null) return; 2655 reportNetworkConnectivity(nai.network, percentage > 50); 2656 } 2657 2658 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2659 enforceAccessPermission(); 2660 enforceInternetPermission(); 2661 2662 NetworkAgentInfo nai; 2663 if (network == null) { 2664 nai = getDefaultNetwork(); 2665 } else { 2666 nai = getNetworkAgentInfoForNetwork(network); 2667 } 2668 if (nai == null) return; 2669 // Revalidate if the app report does not match our current validated state. 2670 if (hasConnectivity == nai.lastValidated) return; 2671 final int uid = Binder.getCallingUid(); 2672 if (DBG) { 2673 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2674 ") by " + uid); 2675 } 2676 synchronized (nai) { 2677 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2678 // which isn't meant to work on uncreated networks. 2679 if (!nai.created) return; 2680 2681 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2682 2683 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2684 } 2685 } 2686 2687 public void captivePortalAppResponse(Network network, int response, String actionToken) { 2688 if (response == ConnectivityManager.CAPTIVE_PORTAL_APP_RETURN_WANTED_AS_IS) { 2689 enforceConnectivityInternalPermission(); 2690 } 2691 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2692 if (nai == null) return; 2693 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_CAPTIVE_PORTAL_APP_FINISHED, response, 0, 2694 actionToken); 2695 } 2696 2697 private ProxyInfo getDefaultProxy() { 2698 // this information is already available as a world read/writable jvm property 2699 // so this API change wouldn't have a benifit. It also breaks the passing 2700 // of proxy info to all the JVMs. 2701 // enforceAccessPermission(); 2702 synchronized (mProxyLock) { 2703 ProxyInfo ret = mGlobalProxy; 2704 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2705 return ret; 2706 } 2707 } 2708 2709 public ProxyInfo getProxyForNetwork(Network network) { 2710 if (network == null) return getDefaultProxy(); 2711 final ProxyInfo globalProxy = getGlobalProxy(); 2712 if (globalProxy != null) return globalProxy; 2713 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2714 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2715 // caller may not have. 2716 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2717 if (nai == null) return null; 2718 synchronized (nai) { 2719 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2720 if (proxyInfo == null) return null; 2721 return new ProxyInfo(proxyInfo); 2722 } 2723 } 2724 2725 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2726 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2727 // proxy is null then there is no proxy in place). 2728 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2729 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2730 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2731 proxy = null; 2732 } 2733 return proxy; 2734 } 2735 2736 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2737 // better for determining if a new proxy broadcast is necessary: 2738 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2739 // avoid unnecessary broadcasts. 2740 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2741 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2742 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2743 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2744 // all set. 2745 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2746 a = canonicalizeProxyInfo(a); 2747 b = canonicalizeProxyInfo(b); 2748 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2749 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2750 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2751 } 2752 2753 public void setGlobalProxy(ProxyInfo proxyProperties) { 2754 enforceConnectivityInternalPermission(); 2755 2756 synchronized (mProxyLock) { 2757 if (proxyProperties == mGlobalProxy) return; 2758 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2759 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2760 2761 String host = ""; 2762 int port = 0; 2763 String exclList = ""; 2764 String pacFileUrl = ""; 2765 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2766 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2767 if (!proxyProperties.isValid()) { 2768 if (DBG) 2769 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2770 return; 2771 } 2772 mGlobalProxy = new ProxyInfo(proxyProperties); 2773 host = mGlobalProxy.getHost(); 2774 port = mGlobalProxy.getPort(); 2775 exclList = mGlobalProxy.getExclusionListAsString(); 2776 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2777 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2778 } 2779 } else { 2780 mGlobalProxy = null; 2781 } 2782 ContentResolver res = mContext.getContentResolver(); 2783 final long token = Binder.clearCallingIdentity(); 2784 try { 2785 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2786 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2787 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2788 exclList); 2789 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2790 } finally { 2791 Binder.restoreCallingIdentity(token); 2792 } 2793 2794 if (mGlobalProxy == null) { 2795 proxyProperties = mDefaultProxy; 2796 } 2797 sendProxyBroadcast(proxyProperties); 2798 } 2799 } 2800 2801 private void loadGlobalProxy() { 2802 ContentResolver res = mContext.getContentResolver(); 2803 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2804 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2805 String exclList = Settings.Global.getString(res, 2806 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2807 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2808 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2809 ProxyInfo proxyProperties; 2810 if (!TextUtils.isEmpty(pacFileUrl)) { 2811 proxyProperties = new ProxyInfo(pacFileUrl); 2812 } else { 2813 proxyProperties = new ProxyInfo(host, port, exclList); 2814 } 2815 if (!proxyProperties.isValid()) { 2816 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2817 return; 2818 } 2819 2820 synchronized (mProxyLock) { 2821 mGlobalProxy = proxyProperties; 2822 } 2823 } 2824 } 2825 2826 public ProxyInfo getGlobalProxy() { 2827 // this information is already available as a world read/writable jvm property 2828 // so this API change wouldn't have a benifit. It also breaks the passing 2829 // of proxy info to all the JVMs. 2830 // enforceAccessPermission(); 2831 synchronized (mProxyLock) { 2832 return mGlobalProxy; 2833 } 2834 } 2835 2836 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2837 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2838 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2839 proxy = null; 2840 } 2841 synchronized (mProxyLock) { 2842 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2843 if (mDefaultProxy == proxy) return; // catches repeated nulls 2844 if (proxy != null && !proxy.isValid()) { 2845 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2846 return; 2847 } 2848 2849 // This call could be coming from the PacManager, containing the port of the local 2850 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2851 // global (to get the correct local port), and send a broadcast. 2852 // TODO: Switch PacManager to have its own message to send back rather than 2853 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2854 if ((mGlobalProxy != null) && (proxy != null) 2855 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2856 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2857 mGlobalProxy = proxy; 2858 sendProxyBroadcast(mGlobalProxy); 2859 return; 2860 } 2861 mDefaultProxy = proxy; 2862 2863 if (mGlobalProxy != null) return; 2864 if (!mDefaultProxyDisabled) { 2865 sendProxyBroadcast(proxy); 2866 } 2867 } 2868 } 2869 2870 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2871 // This method gets called when any network changes proxy, but the broadcast only ever contains 2872 // the default proxy (even if it hasn't changed). 2873 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2874 // world where an app might be bound to a non-default network. 2875 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2876 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2877 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2878 2879 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2880 sendProxyBroadcast(getDefaultProxy()); 2881 } 2882 } 2883 2884 private void handleDeprecatedGlobalHttpProxy() { 2885 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2886 Settings.Global.HTTP_PROXY); 2887 if (!TextUtils.isEmpty(proxy)) { 2888 String data[] = proxy.split(":"); 2889 if (data.length == 0) { 2890 return; 2891 } 2892 2893 String proxyHost = data[0]; 2894 int proxyPort = 8080; 2895 if (data.length > 1) { 2896 try { 2897 proxyPort = Integer.parseInt(data[1]); 2898 } catch (NumberFormatException e) { 2899 return; 2900 } 2901 } 2902 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2903 setGlobalProxy(p); 2904 } 2905 } 2906 2907 private void sendProxyBroadcast(ProxyInfo proxy) { 2908 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2909 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2910 if (DBG) log("sending Proxy Broadcast for " + proxy); 2911 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2912 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2913 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2914 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2915 final long ident = Binder.clearCallingIdentity(); 2916 try { 2917 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2918 } finally { 2919 Binder.restoreCallingIdentity(ident); 2920 } 2921 } 2922 2923 private static class SettingsObserver extends ContentObserver { 2924 final private HashMap<Uri, Integer> mUriEventMap; 2925 final private Context mContext; 2926 final private Handler mHandler; 2927 2928 SettingsObserver(Context context, Handler handler) { 2929 super(null); 2930 mUriEventMap = new HashMap<Uri, Integer>(); 2931 mContext = context; 2932 mHandler = handler; 2933 } 2934 2935 void observe(Uri uri, int what) { 2936 mUriEventMap.put(uri, what); 2937 final ContentResolver resolver = mContext.getContentResolver(); 2938 resolver.registerContentObserver(uri, false, this); 2939 } 2940 2941 @Override 2942 public void onChange(boolean selfChange) { 2943 Slog.wtf(TAG, "Should never be reached."); 2944 } 2945 2946 @Override 2947 public void onChange(boolean selfChange, Uri uri) { 2948 final Integer what = mUriEventMap.get(uri); 2949 if (what != null) { 2950 mHandler.obtainMessage(what.intValue()).sendToTarget(); 2951 } else { 2952 loge("No matching event to send for URI=" + uri); 2953 } 2954 } 2955 } 2956 2957 private static void log(String s) { 2958 Slog.d(TAG, s); 2959 } 2960 2961 private static void loge(String s) { 2962 Slog.e(TAG, s); 2963 } 2964 2965 private static <T> T checkNotNull(T value, String message) { 2966 if (value == null) { 2967 throw new NullPointerException(message); 2968 } 2969 return value; 2970 } 2971 2972 /** 2973 * Prepare for a VPN application. 2974 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 2975 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 2976 * 2977 * @param oldPackage Package name of the application which currently controls VPN, which will 2978 * be replaced. If there is no such application, this should should either be 2979 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 2980 * @param newPackage Package name of the application which should gain control of VPN, or 2981 * {@code null} to disable. 2982 * @param userId User for whom to prepare the new VPN. 2983 * 2984 * @hide 2985 */ 2986 @Override 2987 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 2988 int userId) { 2989 enforceCrossUserPermission(userId); 2990 throwIfLockdownEnabled(); 2991 2992 synchronized(mVpns) { 2993 return mVpns.get(userId).prepare(oldPackage, newPackage); 2994 } 2995 } 2996 2997 /** 2998 * Set whether the VPN package has the ability to launch VPNs without user intervention. 2999 * This method is used by system-privileged apps. 3000 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3001 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3002 * 3003 * @param packageName The package for which authorization state should change. 3004 * @param userId User for whom {@code packageName} is installed. 3005 * @param authorized {@code true} if this app should be able to start a VPN connection without 3006 * explicit user approval, {@code false} if not. 3007 * 3008 * @hide 3009 */ 3010 @Override 3011 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3012 enforceCrossUserPermission(userId); 3013 3014 synchronized(mVpns) { 3015 mVpns.get(userId).setPackageAuthorization(packageName, authorized); 3016 } 3017 } 3018 3019 /** 3020 * Configure a TUN interface and return its file descriptor. Parameters 3021 * are encoded and opaque to this class. This method is used by VpnBuilder 3022 * and not available in ConnectivityManager. Permissions are checked in 3023 * Vpn class. 3024 * @hide 3025 */ 3026 @Override 3027 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3028 throwIfLockdownEnabled(); 3029 int user = UserHandle.getUserId(Binder.getCallingUid()); 3030 synchronized(mVpns) { 3031 return mVpns.get(user).establish(config); 3032 } 3033 } 3034 3035 /** 3036 * Start legacy VPN, controlling native daemons as needed. Creates a 3037 * secondary thread to perform connection work, returning quickly. 3038 */ 3039 @Override 3040 public void startLegacyVpn(VpnProfile profile) { 3041 throwIfLockdownEnabled(); 3042 final LinkProperties egress = getActiveLinkProperties(); 3043 if (egress == null) { 3044 throw new IllegalStateException("Missing active network connection"); 3045 } 3046 int user = UserHandle.getUserId(Binder.getCallingUid()); 3047 synchronized(mVpns) { 3048 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3049 } 3050 } 3051 3052 /** 3053 * Return the information of the ongoing legacy VPN. This method is used 3054 * by VpnSettings and not available in ConnectivityManager. Permissions 3055 * are checked in Vpn class. 3056 */ 3057 @Override 3058 public LegacyVpnInfo getLegacyVpnInfo() { 3059 throwIfLockdownEnabled(); 3060 int user = UserHandle.getUserId(Binder.getCallingUid()); 3061 synchronized(mVpns) { 3062 return mVpns.get(user).getLegacyVpnInfo(); 3063 } 3064 } 3065 3066 /** 3067 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3068 * and not available in ConnectivityManager. 3069 */ 3070 @Override 3071 public VpnInfo[] getAllVpnInfo() { 3072 enforceConnectivityInternalPermission(); 3073 if (mLockdownEnabled) { 3074 return new VpnInfo[0]; 3075 } 3076 3077 synchronized(mVpns) { 3078 List<VpnInfo> infoList = new ArrayList<>(); 3079 for (int i = 0; i < mVpns.size(); i++) { 3080 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3081 if (info != null) { 3082 infoList.add(info); 3083 } 3084 } 3085 return infoList.toArray(new VpnInfo[infoList.size()]); 3086 } 3087 } 3088 3089 /** 3090 * @return VPN information for accounting, or null if we can't retrieve all required 3091 * information, e.g primary underlying iface. 3092 */ 3093 @Nullable 3094 private VpnInfo createVpnInfo(Vpn vpn) { 3095 VpnInfo info = vpn.getVpnInfo(); 3096 if (info == null) { 3097 return null; 3098 } 3099 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3100 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3101 // the underlyingNetworks list. 3102 if (underlyingNetworks == null) { 3103 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3104 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3105 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3106 } 3107 } else if (underlyingNetworks.length > 0) { 3108 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3109 if (linkProperties != null) { 3110 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3111 } 3112 } 3113 return info.primaryUnderlyingIface == null ? null : info; 3114 } 3115 3116 /** 3117 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3118 * VpnDialogs and not available in ConnectivityManager. 3119 * Permissions are checked in Vpn class. 3120 * @hide 3121 */ 3122 @Override 3123 public VpnConfig getVpnConfig(int userId) { 3124 enforceCrossUserPermission(userId); 3125 synchronized(mVpns) { 3126 return mVpns.get(userId).getVpnConfig(); 3127 } 3128 } 3129 3130 @Override 3131 public boolean updateLockdownVpn() { 3132 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3133 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3134 return false; 3135 } 3136 3137 // Tear down existing lockdown if profile was removed 3138 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3139 if (mLockdownEnabled) { 3140 if (!mKeyStore.isUnlocked()) { 3141 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3142 return false; 3143 } 3144 3145 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3146 final VpnProfile profile = VpnProfile.decode( 3147 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3148 int user = UserHandle.getUserId(Binder.getCallingUid()); 3149 synchronized(mVpns) { 3150 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3151 profile)); 3152 } 3153 } else { 3154 setLockdownTracker(null); 3155 } 3156 3157 return true; 3158 } 3159 3160 /** 3161 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3162 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3163 */ 3164 private void setLockdownTracker(LockdownVpnTracker tracker) { 3165 // Shutdown any existing tracker 3166 final LockdownVpnTracker existing = mLockdownTracker; 3167 mLockdownTracker = null; 3168 if (existing != null) { 3169 existing.shutdown(); 3170 } 3171 3172 try { 3173 if (tracker != null) { 3174 mNetd.setFirewallEnabled(true); 3175 mNetd.setFirewallInterfaceRule("lo", true); 3176 mLockdownTracker = tracker; 3177 mLockdownTracker.init(); 3178 } else { 3179 mNetd.setFirewallEnabled(false); 3180 } 3181 } catch (RemoteException e) { 3182 // ignored; NMS lives inside system_server 3183 } 3184 } 3185 3186 private void throwIfLockdownEnabled() { 3187 if (mLockdownEnabled) { 3188 throw new IllegalStateException("Unavailable in lockdown mode"); 3189 } 3190 } 3191 3192 @Override 3193 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3194 // TODO: Remove? Any reason to trigger a provisioning check? 3195 return -1; 3196 } 3197 3198 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3199 private volatile boolean mIsNotificationVisible = false; 3200 3201 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3202 if (DBG) { 3203 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3204 + " action=" + action); 3205 } 3206 Intent intent = new Intent(action); 3207 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3208 // Concatenate the range of types onto the range of NetIDs. 3209 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3210 setProvNotificationVisibleIntent(visible, id, networkType, null, pendingIntent); 3211 } 3212 3213 /** 3214 * Show or hide network provisioning notificaitons. 3215 * 3216 * @param id an identifier that uniquely identifies this notification. This must match 3217 * between show and hide calls. We use the NetID value but for legacy callers 3218 * we concatenate the range of types with the range of NetIDs. 3219 */ 3220 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 3221 String extraInfo, PendingIntent intent) { 3222 if (DBG) { 3223 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 3224 networkType + " extraInfo=" + extraInfo); 3225 } 3226 3227 Resources r = Resources.getSystem(); 3228 NotificationManager notificationManager = (NotificationManager) mContext 3229 .getSystemService(Context.NOTIFICATION_SERVICE); 3230 3231 if (visible) { 3232 CharSequence title; 3233 CharSequence details; 3234 int icon; 3235 Notification notification = new Notification(); 3236 switch (networkType) { 3237 case ConnectivityManager.TYPE_WIFI: 3238 title = r.getString(R.string.wifi_available_sign_in, 0); 3239 details = r.getString(R.string.network_available_sign_in_detailed, 3240 extraInfo); 3241 icon = R.drawable.stat_notify_wifi_in_range; 3242 break; 3243 case ConnectivityManager.TYPE_MOBILE: 3244 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3245 title = r.getString(R.string.network_available_sign_in, 0); 3246 // TODO: Change this to pull from NetworkInfo once a printable 3247 // name has been added to it 3248 details = mTelephonyManager.getNetworkOperatorName(); 3249 icon = R.drawable.stat_notify_rssi_in_range; 3250 break; 3251 default: 3252 title = r.getString(R.string.network_available_sign_in, 0); 3253 details = r.getString(R.string.network_available_sign_in_detailed, 3254 extraInfo); 3255 icon = R.drawable.stat_notify_rssi_in_range; 3256 break; 3257 } 3258 3259 notification.when = 0; 3260 notification.icon = icon; 3261 notification.flags = Notification.FLAG_AUTO_CANCEL; 3262 notification.tickerText = title; 3263 notification.color = mContext.getColor( 3264 com.android.internal.R.color.system_notification_accent_color); 3265 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3266 notification.contentIntent = intent; 3267 3268 try { 3269 notificationManager.notify(NOTIFICATION_ID, id, notification); 3270 } catch (NullPointerException npe) { 3271 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 3272 npe.printStackTrace(); 3273 } 3274 } else { 3275 try { 3276 notificationManager.cancel(NOTIFICATION_ID, id); 3277 } catch (NullPointerException npe) { 3278 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 3279 npe.printStackTrace(); 3280 } 3281 } 3282 mIsNotificationVisible = visible; 3283 } 3284 3285 /** Location to an updatable file listing carrier provisioning urls. 3286 * An example: 3287 * 3288 * <?xml version="1.0" encoding="utf-8"?> 3289 * <provisioningUrls> 3290 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3291 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3292 * </provisioningUrls> 3293 */ 3294 private static final String PROVISIONING_URL_PATH = 3295 "/data/misc/radio/provisioning_urls.xml"; 3296 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3297 3298 /** XML tag for root element. */ 3299 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3300 /** XML tag for individual url */ 3301 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3302 /** XML tag for redirected url */ 3303 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3304 /** XML attribute for mcc */ 3305 private static final String ATTR_MCC = "mcc"; 3306 /** XML attribute for mnc */ 3307 private static final String ATTR_MNC = "mnc"; 3308 3309 private static final int REDIRECTED_PROVISIONING = 1; 3310 private static final int PROVISIONING = 2; 3311 3312 private String getProvisioningUrlBaseFromFile(int type) { 3313 FileReader fileReader = null; 3314 XmlPullParser parser = null; 3315 Configuration config = mContext.getResources().getConfiguration(); 3316 String tagType; 3317 3318 switch (type) { 3319 case PROVISIONING: 3320 tagType = TAG_PROVISIONING_URL; 3321 break; 3322 case REDIRECTED_PROVISIONING: 3323 tagType = TAG_REDIRECTED_URL; 3324 break; 3325 default: 3326 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3327 type); 3328 } 3329 3330 try { 3331 fileReader = new FileReader(mProvisioningUrlFile); 3332 parser = Xml.newPullParser(); 3333 parser.setInput(fileReader); 3334 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3335 3336 while (true) { 3337 XmlUtils.nextElement(parser); 3338 3339 String element = parser.getName(); 3340 if (element == null) break; 3341 3342 if (element.equals(tagType)) { 3343 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3344 try { 3345 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3346 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3347 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3348 parser.next(); 3349 if (parser.getEventType() == XmlPullParser.TEXT) { 3350 return parser.getText(); 3351 } 3352 } 3353 } 3354 } catch (NumberFormatException e) { 3355 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3356 } 3357 } 3358 } 3359 return null; 3360 } catch (FileNotFoundException e) { 3361 loge("Carrier Provisioning Urls file not found"); 3362 } catch (XmlPullParserException e) { 3363 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3364 } catch (IOException e) { 3365 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3366 } finally { 3367 if (fileReader != null) { 3368 try { 3369 fileReader.close(); 3370 } catch (IOException e) {} 3371 } 3372 } 3373 return null; 3374 } 3375 3376 @Override 3377 public String getMobileRedirectedProvisioningUrl() { 3378 enforceConnectivityInternalPermission(); 3379 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3380 if (TextUtils.isEmpty(url)) { 3381 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3382 } 3383 return url; 3384 } 3385 3386 @Override 3387 public String getMobileProvisioningUrl() { 3388 enforceConnectivityInternalPermission(); 3389 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3390 if (TextUtils.isEmpty(url)) { 3391 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3392 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3393 } else { 3394 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3395 } 3396 // populate the iccid, imei and phone number in the provisioning url. 3397 if (!TextUtils.isEmpty(url)) { 3398 String phoneNumber = mTelephonyManager.getLine1Number(); 3399 if (TextUtils.isEmpty(phoneNumber)) { 3400 phoneNumber = "0000000000"; 3401 } 3402 url = String.format(url, 3403 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3404 mTelephonyManager.getDeviceId() /* IMEI */, 3405 phoneNumber /* Phone numer */); 3406 } 3407 3408 return url; 3409 } 3410 3411 @Override 3412 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3413 String action) { 3414 enforceConnectivityInternalPermission(); 3415 final long ident = Binder.clearCallingIdentity(); 3416 try { 3417 setProvNotificationVisible(visible, networkType, action); 3418 } finally { 3419 Binder.restoreCallingIdentity(ident); 3420 } 3421 } 3422 3423 @Override 3424 public void setAirplaneMode(boolean enable) { 3425 enforceConnectivityInternalPermission(); 3426 final long ident = Binder.clearCallingIdentity(); 3427 try { 3428 final ContentResolver cr = mContext.getContentResolver(); 3429 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3430 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3431 intent.putExtra("state", enable); 3432 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3433 } finally { 3434 Binder.restoreCallingIdentity(ident); 3435 } 3436 } 3437 3438 private void onUserStart(int userId) { 3439 synchronized(mVpns) { 3440 Vpn userVpn = mVpns.get(userId); 3441 if (userVpn != null) { 3442 loge("Starting user already has a VPN"); 3443 return; 3444 } 3445 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3446 mVpns.put(userId, userVpn); 3447 } 3448 } 3449 3450 private void onUserStop(int userId) { 3451 synchronized(mVpns) { 3452 Vpn userVpn = mVpns.get(userId); 3453 if (userVpn == null) { 3454 loge("Stopping user has no VPN"); 3455 return; 3456 } 3457 mVpns.delete(userId); 3458 } 3459 } 3460 3461 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3462 @Override 3463 public void onReceive(Context context, Intent intent) { 3464 final String action = intent.getAction(); 3465 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3466 if (userId == UserHandle.USER_NULL) return; 3467 3468 if (Intent.ACTION_USER_STARTING.equals(action)) { 3469 onUserStart(userId); 3470 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3471 onUserStop(userId); 3472 } 3473 } 3474 }; 3475 3476 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3477 new HashMap<Messenger, NetworkFactoryInfo>(); 3478 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3479 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3480 3481 private static class NetworkFactoryInfo { 3482 public final String name; 3483 public final Messenger messenger; 3484 public final AsyncChannel asyncChannel; 3485 3486 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3487 this.name = name; 3488 this.messenger = messenger; 3489 this.asyncChannel = asyncChannel; 3490 } 3491 } 3492 3493 /** 3494 * Tracks info about the requester. 3495 * Also used to notice when the calling process dies so we can self-expire 3496 */ 3497 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3498 static final boolean REQUEST = true; 3499 static final boolean LISTEN = false; 3500 3501 final NetworkRequest request; 3502 final PendingIntent mPendingIntent; 3503 boolean mPendingIntentSent; 3504 private final IBinder mBinder; 3505 final int mPid; 3506 final int mUid; 3507 final Messenger messenger; 3508 final boolean isRequest; 3509 3510 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3511 request = r; 3512 mPendingIntent = pi; 3513 messenger = null; 3514 mBinder = null; 3515 mPid = getCallingPid(); 3516 mUid = getCallingUid(); 3517 this.isRequest = isRequest; 3518 } 3519 3520 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3521 super(); 3522 messenger = m; 3523 request = r; 3524 mBinder = binder; 3525 mPid = getCallingPid(); 3526 mUid = getCallingUid(); 3527 this.isRequest = isRequest; 3528 mPendingIntent = null; 3529 3530 try { 3531 mBinder.linkToDeath(this, 0); 3532 } catch (RemoteException e) { 3533 binderDied(); 3534 } 3535 } 3536 3537 void unlinkDeathRecipient() { 3538 if (mBinder != null) { 3539 mBinder.unlinkToDeath(this, 0); 3540 } 3541 } 3542 3543 public void binderDied() { 3544 log("ConnectivityService NetworkRequestInfo binderDied(" + 3545 request + ", " + mBinder + ")"); 3546 releaseNetworkRequest(request); 3547 } 3548 3549 public String toString() { 3550 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3551 mPid + " for " + request + 3552 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3553 } 3554 } 3555 3556 @Override 3557 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3558 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3559 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3560 enforceNetworkRequestPermissions(networkCapabilities); 3561 enforceMeteredApnPolicy(networkCapabilities); 3562 3563 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3564 throw new IllegalArgumentException("Bad timeout specified"); 3565 } 3566 3567 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3568 nextNetworkRequestId()); 3569 if (DBG) log("requestNetwork for " + networkRequest); 3570 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3571 NetworkRequestInfo.REQUEST); 3572 3573 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3574 if (timeoutMs > 0) { 3575 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3576 nri), timeoutMs); 3577 } 3578 return networkRequest; 3579 } 3580 3581 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3582 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3583 enforceConnectivityInternalPermission(); 3584 } else { 3585 enforceChangePermission(); 3586 } 3587 } 3588 3589 @Override 3590 public boolean requestBandwidthUpdate(Network network) { 3591 enforceAccessPermission(); 3592 NetworkAgentInfo nai = null; 3593 if (network == null) { 3594 return false; 3595 } 3596 synchronized (mNetworkForNetId) { 3597 nai = mNetworkForNetId.get(network.netId); 3598 } 3599 if (nai != null) { 3600 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3601 return true; 3602 } 3603 return false; 3604 } 3605 3606 3607 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3608 // if UID is restricted, don't allow them to bring up metered APNs 3609 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3610 final int uidRules; 3611 final int uid = Binder.getCallingUid(); 3612 synchronized(mRulesLock) { 3613 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3614 } 3615 if ((uidRules & (RULE_REJECT_METERED | RULE_REJECT_ALL)) != 0) { 3616 // we could silently fail or we can filter the available nets to only give 3617 // them those they have access to. Chose the more useful 3618 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3619 } 3620 } 3621 } 3622 3623 @Override 3624 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3625 PendingIntent operation) { 3626 checkNotNull(operation, "PendingIntent cannot be null."); 3627 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3628 enforceNetworkRequestPermissions(networkCapabilities); 3629 enforceMeteredApnPolicy(networkCapabilities); 3630 3631 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3632 nextNetworkRequestId()); 3633 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3634 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3635 NetworkRequestInfo.REQUEST); 3636 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3637 nri)); 3638 return networkRequest; 3639 } 3640 3641 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3642 mHandler.sendMessageDelayed( 3643 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3644 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3645 } 3646 3647 @Override 3648 public void releasePendingNetworkRequest(PendingIntent operation) { 3649 checkNotNull(operation, "PendingIntent cannot be null."); 3650 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3651 getCallingUid(), 0, operation)); 3652 } 3653 3654 // In order to implement the compatibility measure for pre-M apps that call 3655 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3656 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3657 // This ensures it has permission to do so. 3658 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3659 if (nc == null) { 3660 return false; 3661 } 3662 int[] transportTypes = nc.getTransportTypes(); 3663 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3664 return false; 3665 } 3666 try { 3667 mContext.enforceCallingOrSelfPermission( 3668 android.Manifest.permission.ACCESS_WIFI_STATE, 3669 "ConnectivityService"); 3670 } catch (SecurityException e) { 3671 return false; 3672 } 3673 return true; 3674 } 3675 3676 @Override 3677 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3678 Messenger messenger, IBinder binder) { 3679 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3680 enforceAccessPermission(); 3681 } 3682 3683 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3684 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3685 if (DBG) log("listenForNetwork for " + networkRequest); 3686 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3687 NetworkRequestInfo.LISTEN); 3688 3689 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3690 return networkRequest; 3691 } 3692 3693 @Override 3694 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3695 PendingIntent operation) { 3696 } 3697 3698 @Override 3699 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3700 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3701 0, networkRequest)); 3702 } 3703 3704 @Override 3705 public void registerNetworkFactory(Messenger messenger, String name) { 3706 enforceConnectivityInternalPermission(); 3707 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3708 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3709 } 3710 3711 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3712 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3713 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3714 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3715 } 3716 3717 @Override 3718 public void unregisterNetworkFactory(Messenger messenger) { 3719 enforceConnectivityInternalPermission(); 3720 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3721 } 3722 3723 private void handleUnregisterNetworkFactory(Messenger messenger) { 3724 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3725 if (nfi == null) { 3726 loge("Failed to find Messenger in unregisterNetworkFactory"); 3727 return; 3728 } 3729 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3730 } 3731 3732 /** 3733 * NetworkAgentInfo supporting a request by requestId. 3734 * These have already been vetted (their Capabilities satisfy the request) 3735 * and the are the highest scored network available. 3736 * the are keyed off the Requests requestId. 3737 */ 3738 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 3739 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3740 new SparseArray<NetworkAgentInfo>(); 3741 3742 // NOTE: Accessed on multiple threads, must be synchronized on itself. 3743 @GuardedBy("mNetworkForNetId") 3744 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3745 new SparseArray<NetworkAgentInfo>(); 3746 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 3747 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 3748 // there may not be a strict 1:1 correlation between the two. 3749 @GuardedBy("mNetworkForNetId") 3750 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 3751 3752 // NetworkAgentInfo keyed off its connecting messenger 3753 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3754 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 3755 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3756 new HashMap<Messenger, NetworkAgentInfo>(); 3757 3758 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3759 private final NetworkRequest mDefaultRequest; 3760 3761 // Request used to optionally keep mobile data active even when higher 3762 // priority networks like Wi-Fi are active. 3763 private final NetworkRequest mDefaultMobileDataRequest; 3764 3765 private NetworkAgentInfo getDefaultNetwork() { 3766 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3767 } 3768 3769 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3770 return nai == getDefaultNetwork(); 3771 } 3772 3773 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3774 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3775 int currentScore, NetworkMisc networkMisc) { 3776 enforceConnectivityInternalPermission(); 3777 3778 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3779 // satisfies mDefaultRequest. 3780 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3781 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 3782 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 3783 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest); 3784 synchronized (this) { 3785 nai.networkMonitor.systemReady = mSystemReady; 3786 } 3787 if (DBG) log("registerNetworkAgent " + nai); 3788 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3789 return nai.network.netId; 3790 } 3791 3792 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3793 if (VDBG) log("Got NetworkAgent Messenger"); 3794 mNetworkAgentInfos.put(na.messenger, na); 3795 synchronized (mNetworkForNetId) { 3796 mNetworkForNetId.put(na.network.netId, na); 3797 } 3798 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3799 NetworkInfo networkInfo = na.networkInfo; 3800 na.networkInfo = null; 3801 updateNetworkInfo(na, networkInfo); 3802 } 3803 3804 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3805 LinkProperties newLp = networkAgent.linkProperties; 3806 int netId = networkAgent.network.netId; 3807 3808 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3809 // we do anything else, make sure its LinkProperties are accurate. 3810 if (networkAgent.clatd != null) { 3811 networkAgent.clatd.fixupLinkProperties(oldLp); 3812 } 3813 3814 updateInterfaces(newLp, oldLp, netId); 3815 updateMtu(newLp, oldLp); 3816 // TODO - figure out what to do for clat 3817// for (LinkProperties lp : newLp.getStackedLinks()) { 3818// updateMtu(lp, null); 3819// } 3820 updateTcpBufferSizes(networkAgent); 3821 3822 // TODO: deprecate and remove mDefaultDns when we can do so safely. 3823 // For now, use it only when the network has Internet access. http://b/18327075 3824 final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3825 NET_CAPABILITY_INTERNET); 3826 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3827 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3828 3829 updateClat(newLp, oldLp, networkAgent); 3830 if (isDefaultNetwork(networkAgent)) { 3831 handleApplyDefaultProxy(newLp.getHttpProxy()); 3832 } else { 3833 updateProxy(newLp, oldLp, networkAgent); 3834 } 3835 // TODO - move this check to cover the whole function 3836 if (!Objects.equals(newLp, oldLp)) { 3837 notifyIfacesChanged(); 3838 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3839 } 3840 } 3841 3842 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3843 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3844 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3845 3846 if (!wasRunningClat && shouldRunClat) { 3847 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3848 nai.clatd.start(); 3849 } else if (wasRunningClat && !shouldRunClat) { 3850 nai.clatd.stop(); 3851 } 3852 } 3853 3854 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3855 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3856 if (oldLp != null) { 3857 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3858 } else if (newLp != null) { 3859 interfaceDiff.added = newLp.getAllInterfaceNames(); 3860 } 3861 for (String iface : interfaceDiff.added) { 3862 try { 3863 if (DBG) log("Adding iface " + iface + " to network " + netId); 3864 mNetd.addInterfaceToNetwork(iface, netId); 3865 } catch (Exception e) { 3866 loge("Exception adding interface: " + e); 3867 } 3868 } 3869 for (String iface : interfaceDiff.removed) { 3870 try { 3871 if (DBG) log("Removing iface " + iface + " from network " + netId); 3872 mNetd.removeInterfaceFromNetwork(iface, netId); 3873 } catch (Exception e) { 3874 loge("Exception removing interface: " + e); 3875 } 3876 } 3877 } 3878 3879 /** 3880 * Have netd update routes from oldLp to newLp. 3881 * @return true if routes changed between oldLp and newLp 3882 */ 3883 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3884 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3885 if (oldLp != null) { 3886 routeDiff = oldLp.compareAllRoutes(newLp); 3887 } else if (newLp != null) { 3888 routeDiff.added = newLp.getAllRoutes(); 3889 } 3890 3891 // add routes before removing old in case it helps with continuous connectivity 3892 3893 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3894 for (RouteInfo route : routeDiff.added) { 3895 if (route.hasGateway()) continue; 3896 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3897 try { 3898 mNetd.addRoute(netId, route); 3899 } catch (Exception e) { 3900 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3901 loge("Exception in addRoute for non-gateway: " + e); 3902 } 3903 } 3904 } 3905 for (RouteInfo route : routeDiff.added) { 3906 if (route.hasGateway() == false) continue; 3907 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3908 try { 3909 mNetd.addRoute(netId, route); 3910 } catch (Exception e) { 3911 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3912 loge("Exception in addRoute for gateway: " + e); 3913 } 3914 } 3915 } 3916 3917 for (RouteInfo route : routeDiff.removed) { 3918 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3919 try { 3920 mNetd.removeRoute(netId, route); 3921 } catch (Exception e) { 3922 loge("Exception in removeRoute: " + e); 3923 } 3924 } 3925 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3926 } 3927 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 3928 boolean flush, boolean useDefaultDns) { 3929 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 3930 Collection<InetAddress> dnses = newLp.getDnsServers(); 3931 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 3932 dnses = new ArrayList(); 3933 dnses.add(mDefaultDns); 3934 if (DBG) { 3935 loge("no dns provided for netId " + netId + ", so using defaults"); 3936 } 3937 } 3938 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 3939 try { 3940 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 3941 newLp.getDomains()); 3942 } catch (Exception e) { 3943 loge("Exception in setDnsServersForNetwork: " + e); 3944 } 3945 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 3946 if (defaultNai != null && defaultNai.network.netId == netId) { 3947 setDefaultDnsSystemProperties(dnses); 3948 } 3949 flushVmDnsCache(); 3950 } else if (flush) { 3951 try { 3952 mNetd.flushNetworkDnsCache(netId); 3953 } catch (Exception e) { 3954 loge("Exception in flushNetworkDnsCache: " + e); 3955 } 3956 flushVmDnsCache(); 3957 } 3958 } 3959 3960 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 3961 int last = 0; 3962 for (InetAddress dns : dnses) { 3963 ++last; 3964 String key = "net.dns" + last; 3965 String value = dns.getHostAddress(); 3966 SystemProperties.set(key, value); 3967 } 3968 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 3969 String key = "net.dns" + i; 3970 SystemProperties.set(key, ""); 3971 } 3972 mNumDnsEntries = last; 3973 } 3974 3975 private void updateCapabilities(NetworkAgentInfo networkAgent, 3976 NetworkCapabilities networkCapabilities) { 3977 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 3978 synchronized (networkAgent) { 3979 networkAgent.networkCapabilities = networkCapabilities; 3980 } 3981 if (networkAgent.lastValidated) { 3982 networkAgent.networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 3983 // There's no need to remove the capability if we think the network is unvalidated, 3984 // because NetworkAgents don't set the validated capability. 3985 } 3986 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 3987 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 3988 } 3989 } 3990 3991 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 3992 for (int i = 0; i < nai.networkRequests.size(); i++) { 3993 NetworkRequest nr = nai.networkRequests.valueAt(i); 3994 // Don't send listening requests to factories. b/17393458 3995 if (!isRequest(nr)) continue; 3996 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 3997 } 3998 } 3999 4000 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4001 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4002 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4003 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4004 networkRequest); 4005 } 4006 } 4007 4008 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4009 int notificationType) { 4010 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4011 Intent intent = new Intent(); 4012 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4013 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4014 nri.mPendingIntentSent = true; 4015 sendIntent(nri.mPendingIntent, intent); 4016 } 4017 // else not handled 4018 } 4019 4020 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4021 mPendingIntentWakeLock.acquire(); 4022 try { 4023 if (DBG) log("Sending " + pendingIntent); 4024 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4025 } catch (PendingIntent.CanceledException e) { 4026 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4027 mPendingIntentWakeLock.release(); 4028 releasePendingNetworkRequest(pendingIntent); 4029 } 4030 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4031 } 4032 4033 @Override 4034 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4035 String resultData, Bundle resultExtras) { 4036 if (DBG) log("Finished sending " + pendingIntent); 4037 mPendingIntentWakeLock.release(); 4038 // Release with a delay so the receiving client has an opportunity to put in its 4039 // own request. 4040 releasePendingNetworkRequestWithDelay(pendingIntent); 4041 } 4042 4043 private void callCallbackForRequest(NetworkRequestInfo nri, 4044 NetworkAgentInfo networkAgent, int notificationType) { 4045 if (nri.messenger == null) return; // Default request has no msgr 4046 Bundle bundle = new Bundle(); 4047 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4048 new NetworkRequest(nri.request)); 4049 Message msg = Message.obtain(); 4050 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4051 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4052 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4053 } 4054 switch (notificationType) { 4055 case ConnectivityManager.CALLBACK_LOSING: { 4056 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4057 break; 4058 } 4059 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4060 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4061 new NetworkCapabilities(networkAgent.networkCapabilities)); 4062 break; 4063 } 4064 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4065 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4066 new LinkProperties(networkAgent.linkProperties)); 4067 break; 4068 } 4069 } 4070 msg.what = notificationType; 4071 msg.setData(bundle); 4072 try { 4073 if (VDBG) { 4074 log("sending notification " + notifyTypeToName(notificationType) + 4075 " for " + nri.request); 4076 } 4077 nri.messenger.send(msg); 4078 } catch (RemoteException e) { 4079 // may occur naturally in the race of binder death. 4080 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4081 } 4082 } 4083 4084 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4085 for (int i = 0; i < nai.networkRequests.size(); i++) { 4086 NetworkRequest nr = nai.networkRequests.valueAt(i); 4087 // Ignore listening requests. 4088 if (!isRequest(nr)) continue; 4089 loge("Dead network still had at least " + nr); 4090 break; 4091 } 4092 nai.asyncChannel.disconnect(); 4093 } 4094 4095 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4096 if (oldNetwork == null) { 4097 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4098 return; 4099 } 4100 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4101 teardownUnneededNetwork(oldNetwork); 4102 } 4103 4104 private void makeDefault(NetworkAgentInfo newNetwork) { 4105 if (DBG) log("Switching to new default network: " + newNetwork); 4106 setupDataActivityTracking(newNetwork); 4107 try { 4108 mNetd.setDefaultNetId(newNetwork.network.netId); 4109 } catch (Exception e) { 4110 loge("Exception setting default network :" + e); 4111 } 4112 notifyLockdownVpn(newNetwork); 4113 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4114 updateTcpBufferSizes(newNetwork); 4115 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4116 } 4117 4118 // Handles a network appearing or improving its score. 4119 // 4120 // - Evaluates all current NetworkRequests that can be 4121 // satisfied by newNetwork, and reassigns to newNetwork 4122 // any such requests for which newNetwork is the best. 4123 // 4124 // - Lingers any validated Networks that as a result are no longer 4125 // needed. A network is needed if it is the best network for 4126 // one or more NetworkRequests, or if it is a VPN. 4127 // 4128 // - Tears down newNetwork if it just became validated 4129 // (i.e. nascent==JUST_VALIDATED) but turns out to be unneeded. 4130 // 4131 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4132 // networks that have no chance (i.e. even if validated) 4133 // of becoming the highest scoring network. 4134 // 4135 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4136 // it does not remove NetworkRequests that other Networks could better satisfy. 4137 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4138 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4139 // as it performs better by a factor of the number of Networks. 4140 // 4141 // @param newNetwork is the network to be matched against NetworkRequests. 4142 // @param nascent indicates if newNetwork just became validated, in which case it should be 4143 // torn down if unneeded. 4144 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4145 // performed to tear down unvalidated networks that have no chance (i.e. even if 4146 // validated) of becoming the highest scoring network. 4147 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, NascentState nascent, 4148 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4149 if (!newNetwork.created) return; 4150 if (nascent == NascentState.JUST_VALIDATED && !newNetwork.everValidated) { 4151 loge("ERROR: nascent network not validated."); 4152 } 4153 boolean keep = newNetwork.isVPN(); 4154 boolean isNewDefault = false; 4155 NetworkAgentInfo oldDefaultNetwork = null; 4156 if (DBG) log("rematching " + newNetwork.name()); 4157 // Find and migrate to this Network any NetworkRequests for 4158 // which this network is now the best. 4159 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4160 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4161 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4162 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4163 if (newNetwork == currentNetwork) { 4164 if (DBG) { 4165 log("Network " + newNetwork.name() + " was already satisfying" + 4166 " request " + nri.request.requestId + ". No change."); 4167 } 4168 keep = true; 4169 continue; 4170 } 4171 4172 // check if it satisfies the NetworkCapabilities 4173 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4174 if (newNetwork.satisfies(nri.request)) { 4175 if (!nri.isRequest) { 4176 // This is not a request, it's a callback listener. 4177 // Add it to newNetwork regardless of score. 4178 newNetwork.addRequest(nri.request); 4179 continue; 4180 } 4181 4182 // next check if it's better than any current network we're using for 4183 // this request 4184 if (VDBG) { 4185 log("currentScore = " + 4186 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4187 ", newScore = " + newNetwork.getCurrentScore()); 4188 } 4189 if (currentNetwork == null || 4190 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4191 if (currentNetwork != null) { 4192 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4193 currentNetwork.networkRequests.remove(nri.request.requestId); 4194 currentNetwork.networkLingered.add(nri.request); 4195 affectedNetworks.add(currentNetwork); 4196 } else { 4197 if (DBG) log(" accepting network in place of null"); 4198 } 4199 unlinger(newNetwork); 4200 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4201 newNetwork.addRequest(nri.request); 4202 keep = true; 4203 // Tell NetworkFactories about the new score, so they can stop 4204 // trying to connect if they know they cannot match it. 4205 // TODO - this could get expensive if we have alot of requests for this 4206 // network. Think about if there is a way to reduce this. Push 4207 // netid->request mapping to each factory? 4208 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4209 if (mDefaultRequest.requestId == nri.request.requestId) { 4210 isNewDefault = true; 4211 oldDefaultNetwork = currentNetwork; 4212 } 4213 } 4214 } 4215 } 4216 // Linger any networks that are no longer needed. 4217 for (NetworkAgentInfo nai : affectedNetworks) { 4218 if (nai.everValidated && unneeded(nai)) { 4219 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4220 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4221 } else { 4222 unlinger(nai); 4223 } 4224 } 4225 if (keep) { 4226 if (isNewDefault) { 4227 // Notify system services that this network is up. 4228 makeDefault(newNetwork); 4229 synchronized (ConnectivityService.this) { 4230 // have a new default network, release the transition wakelock in 4231 // a second if it's held. The second pause is to allow apps 4232 // to reconnect over the new network 4233 if (mNetTransitionWakeLock.isHeld()) { 4234 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4235 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4236 mNetTransitionWakeLockSerialNumber, 0), 4237 1000); 4238 } 4239 } 4240 } 4241 4242 // do this after the default net is switched, but 4243 // before LegacyTypeTracker sends legacy broadcasts 4244 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4245 4246 if (isNewDefault) { 4247 // Maintain the illusion: since the legacy API only 4248 // understands one network at a time, we must pretend 4249 // that the current default network disconnected before 4250 // the new one connected. 4251 if (oldDefaultNetwork != null) { 4252 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4253 oldDefaultNetwork, true); 4254 } 4255 mDefaultInetConditionPublished = newNetwork.everValidated ? 100 : 0; 4256 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4257 notifyLockdownVpn(newNetwork); 4258 } 4259 4260 // Notify battery stats service about this network, both the normal 4261 // interface and any stacked links. 4262 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4263 try { 4264 final IBatteryStats bs = BatteryStatsService.getService(); 4265 final int type = newNetwork.networkInfo.getType(); 4266 4267 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4268 bs.noteNetworkInterfaceType(baseIface, type); 4269 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4270 final String stackedIface = stacked.getInterfaceName(); 4271 bs.noteNetworkInterfaceType(stackedIface, type); 4272 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4273 } 4274 } catch (RemoteException ignored) { 4275 } 4276 4277 // This has to happen after the notifyNetworkCallbacks as that tickles each 4278 // ConnectivityManager instance so that legacy requests correctly bind dns 4279 // requests to this network. The legacy users are listening for this bcast 4280 // and will generally do a dns request so they can ensureRouteToHost and if 4281 // they do that before the callbacks happen they'll use the default network. 4282 // 4283 // TODO: Is there still a race here? We send the broadcast 4284 // after sending the callback, but if the app can receive the 4285 // broadcast before the callback, it might still break. 4286 // 4287 // This *does* introduce a race where if the user uses the new api 4288 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4289 // they may get old info. Reverse this after the old startUsing api is removed. 4290 // This is on top of the multiple intent sequencing referenced in the todo above. 4291 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4292 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4293 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4294 // legacy type tracker filters out repeat adds 4295 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4296 } 4297 } 4298 4299 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4300 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4301 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4302 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4303 if (newNetwork.isVPN()) { 4304 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4305 } 4306 } else if (nascent == NascentState.JUST_VALIDATED) { 4307 // Only tear down newly validated networks here. Leave unvalidated to either become 4308 // validated (and get evaluated against peers, one losing here), or get reaped (see 4309 // reapUnvalidatedNetworks) if they have no chance of becoming the highest scoring 4310 // network. Networks that have been up for a while and are validated should be torn 4311 // down via the lingering process so communication on that network is given time to 4312 // wrap up. 4313 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4314 teardownUnneededNetwork(newNetwork); 4315 } 4316 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4317 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4318 if (!nai.everValidated && unneeded(nai)) { 4319 if (DBG) log("Reaping " + nai.name()); 4320 teardownUnneededNetwork(nai); 4321 } 4322 } 4323 } 4324 } 4325 4326 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4327 // being disconnected. 4328 // If only one Network's score or capabilities have been modified since the last time 4329 // this function was called, pass this Network in via the "changed" arugment, otherwise 4330 // pass null. 4331 // If only one Network has been changed but its NetworkCapabilities have not changed, 4332 // pass in the Network's score (from getCurrentScore()) prior to the change via 4333 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4334 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4335 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4336 // to avoid the slowness. It is not simply enough to process just "changed", for 4337 // example in the case where "changed"'s score decreases and another network should begin 4338 // satifying a NetworkRequest that "changed" currently satisfies. 4339 4340 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4341 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4342 // rematchNetworkAndRequests() handles. 4343 if (changed != null && oldScore < changed.getCurrentScore()) { 4344 rematchNetworkAndRequests(changed, NascentState.NOT_JUST_VALIDATED, 4345 ReapUnvalidatedNetworks.REAP); 4346 } else { 4347 for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) { 4348 rematchNetworkAndRequests((NetworkAgentInfo)i.next(), 4349 NascentState.NOT_JUST_VALIDATED, 4350 // Only reap the last time through the loop. Reaping before all rematching 4351 // is complete could incorrectly teardown a network that hasn't yet been 4352 // rematched. 4353 i.hasNext() ? ReapUnvalidatedNetworks.DONT_REAP 4354 : ReapUnvalidatedNetworks.REAP); 4355 } 4356 } 4357 } 4358 4359 private void updateInetCondition(NetworkAgentInfo nai) { 4360 // Don't bother updating until we've graduated to validated at least once. 4361 if (!nai.everValidated) return; 4362 // For now only update icons for default connection. 4363 // TODO: Update WiFi and cellular icons separately. b/17237507 4364 if (!isDefaultNetwork(nai)) return; 4365 4366 int newInetCondition = nai.lastValidated ? 100 : 0; 4367 // Don't repeat publish. 4368 if (newInetCondition == mDefaultInetConditionPublished) return; 4369 4370 mDefaultInetConditionPublished = newInetCondition; 4371 sendInetConditionBroadcast(nai.networkInfo); 4372 } 4373 4374 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4375 if (mLockdownTracker != null) { 4376 if (nai != null && nai.isVPN()) { 4377 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4378 } else { 4379 mLockdownTracker.onNetworkInfoChanged(); 4380 } 4381 } 4382 } 4383 4384 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4385 NetworkInfo.State state = newInfo.getState(); 4386 NetworkInfo oldInfo = null; 4387 synchronized (networkAgent) { 4388 oldInfo = networkAgent.networkInfo; 4389 networkAgent.networkInfo = newInfo; 4390 } 4391 notifyLockdownVpn(networkAgent); 4392 4393 if (oldInfo != null && oldInfo.getState() == state) { 4394 if (VDBG) log("ignoring duplicate network state non-change"); 4395 return; 4396 } 4397 if (DBG) { 4398 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4399 (oldInfo == null ? "null" : oldInfo.getState()) + 4400 " to " + state); 4401 } 4402 4403 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4404 try { 4405 // This should never fail. Specifying an already in use NetID will cause failure. 4406 if (networkAgent.isVPN()) { 4407 mNetd.createVirtualNetwork(networkAgent.network.netId, 4408 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4409 (networkAgent.networkMisc == null || 4410 !networkAgent.networkMisc.allowBypass)); 4411 } else { 4412 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4413 } 4414 } catch (Exception e) { 4415 loge("Error creating network " + networkAgent.network.netId + ": " 4416 + e.getMessage()); 4417 return; 4418 } 4419 networkAgent.created = true; 4420 updateLinkProperties(networkAgent, null); 4421 notifyIfacesChanged(); 4422 4423 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4424 scheduleUnvalidatedPrompt(networkAgent); 4425 4426 if (networkAgent.isVPN()) { 4427 // Temporarily disable the default proxy (not global). 4428 synchronized (mProxyLock) { 4429 if (!mDefaultProxyDisabled) { 4430 mDefaultProxyDisabled = true; 4431 if (mGlobalProxy == null && mDefaultProxy != null) { 4432 sendProxyBroadcast(null); 4433 } 4434 } 4435 } 4436 // TODO: support proxy per network. 4437 } 4438 4439 // Consider network even though it is not yet validated. 4440 rematchNetworkAndRequests(networkAgent, NascentState.NOT_JUST_VALIDATED, 4441 ReapUnvalidatedNetworks.REAP); 4442 4443 // This has to happen after matching the requests, because callbacks are just requests. 4444 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4445 } else if (state == NetworkInfo.State.DISCONNECTED || 4446 state == NetworkInfo.State.SUSPENDED) { 4447 networkAgent.asyncChannel.disconnect(); 4448 if (networkAgent.isVPN()) { 4449 synchronized (mProxyLock) { 4450 if (mDefaultProxyDisabled) { 4451 mDefaultProxyDisabled = false; 4452 if (mGlobalProxy == null && mDefaultProxy != null) { 4453 sendProxyBroadcast(mDefaultProxy); 4454 } 4455 } 4456 } 4457 } 4458 } 4459 } 4460 4461 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4462 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4463 if (score < 0) { 4464 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4465 "). Bumping score to min of 0"); 4466 score = 0; 4467 } 4468 4469 final int oldScore = nai.getCurrentScore(); 4470 nai.setCurrentScore(score); 4471 4472 rematchAllNetworksAndRequests(nai, oldScore); 4473 4474 sendUpdatedScoreToFactories(nai); 4475 } 4476 4477 // notify only this one new request of the current state 4478 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4479 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4480 // TODO - read state from monitor to decide what to send. 4481// if (nai.networkMonitor.isLingering()) { 4482// notifyType = NetworkCallbacks.LOSING; 4483// } else if (nai.networkMonitor.isEvaluating()) { 4484// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4485// } 4486 if (nri.mPendingIntent == null) { 4487 callCallbackForRequest(nri, nai, notifyType); 4488 } else { 4489 sendPendingIntentForRequest(nri, nai, notifyType); 4490 } 4491 } 4492 4493 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4494 // The NetworkInfo we actually send out has no bearing on the real 4495 // state of affairs. For example, if the default connection is mobile, 4496 // and a request for HIPRI has just gone away, we need to pretend that 4497 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4498 // the state to DISCONNECTED, even though the network is of type MOBILE 4499 // and is still connected. 4500 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4501 info.setType(type); 4502 if (connected) { 4503 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4504 sendConnectedBroadcast(info); 4505 } else { 4506 info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo()); 4507 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4508 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4509 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4510 if (info.isFailover()) { 4511 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4512 nai.networkInfo.setFailover(false); 4513 } 4514 if (info.getReason() != null) { 4515 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4516 } 4517 if (info.getExtraInfo() != null) { 4518 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4519 } 4520 NetworkAgentInfo newDefaultAgent = null; 4521 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4522 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4523 if (newDefaultAgent != null) { 4524 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4525 newDefaultAgent.networkInfo); 4526 } else { 4527 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4528 } 4529 } 4530 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4531 mDefaultInetConditionPublished); 4532 sendStickyBroadcast(intent); 4533 if (newDefaultAgent != null) { 4534 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4535 } 4536 } 4537 } 4538 4539 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4540 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4541 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4542 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4543 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4544 if (VDBG) log(" sending notification for " + nr); 4545 if (nri.mPendingIntent == null) { 4546 callCallbackForRequest(nri, networkAgent, notifyType); 4547 } else { 4548 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4549 } 4550 } 4551 } 4552 4553 private String notifyTypeToName(int notifyType) { 4554 switch (notifyType) { 4555 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4556 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4557 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4558 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4559 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4560 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4561 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4562 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4563 } 4564 return "UNKNOWN"; 4565 } 4566 4567 /** 4568 * Notify other system services that set of active ifaces has changed. 4569 */ 4570 private void notifyIfacesChanged() { 4571 try { 4572 mStatsService.forceUpdateIfaces(); 4573 } catch (Exception ignored) { 4574 } 4575 } 4576 4577 @Override 4578 public boolean addVpnAddress(String address, int prefixLength) { 4579 throwIfLockdownEnabled(); 4580 int user = UserHandle.getUserId(Binder.getCallingUid()); 4581 synchronized (mVpns) { 4582 return mVpns.get(user).addAddress(address, prefixLength); 4583 } 4584 } 4585 4586 @Override 4587 public boolean removeVpnAddress(String address, int prefixLength) { 4588 throwIfLockdownEnabled(); 4589 int user = UserHandle.getUserId(Binder.getCallingUid()); 4590 synchronized (mVpns) { 4591 return mVpns.get(user).removeAddress(address, prefixLength); 4592 } 4593 } 4594 4595 @Override 4596 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4597 throwIfLockdownEnabled(); 4598 int user = UserHandle.getUserId(Binder.getCallingUid()); 4599 boolean success; 4600 synchronized (mVpns) { 4601 success = mVpns.get(user).setUnderlyingNetworks(networks); 4602 } 4603 if (success) { 4604 notifyIfacesChanged(); 4605 } 4606 return success; 4607 } 4608 4609 @Override 4610 public void factoryReset() { 4611 enforceConnectivityInternalPermission(); 4612 4613 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 4614 return; 4615 } 4616 4617 final int userId = UserHandle.getCallingUserId(); 4618 4619 // Turn airplane mode off 4620 setAirplaneMode(false); 4621 4622 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 4623 // Untether 4624 for (String tether : getTetheredIfaces()) { 4625 untether(tether); 4626 } 4627 } 4628 4629 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 4630 // Turn VPN off 4631 VpnConfig vpnConfig = getVpnConfig(userId); 4632 if (vpnConfig != null) { 4633 if (vpnConfig.legacy) { 4634 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 4635 } else { 4636 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 4637 // in the future without user intervention. 4638 setVpnPackageAuthorization(vpnConfig.user, userId, false); 4639 4640 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 4641 } 4642 } 4643 } 4644 } 4645} 4646