ConnectivityService.java revision 379747a4040118130ca35947aef6942b2cd1cd67
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.NetworkDiagnostics; 116import com.android.server.connectivity.Nat464Xlat; 117import com.android.server.connectivity.NetworkAgentInfo; 118import com.android.server.connectivity.NetworkMonitor; 119import com.android.server.connectivity.PacManager; 120import com.android.server.connectivity.PermissionMonitor; 121import com.android.server.connectivity.Tethering; 122import com.android.server.connectivity.Vpn; 123import com.android.server.net.BaseNetworkObserver; 124import com.android.server.net.LockdownVpnTracker; 125import com.google.android.collect.Lists; 126import com.google.android.collect.Sets; 127 128import org.xmlpull.v1.XmlPullParser; 129import org.xmlpull.v1.XmlPullParserException; 130 131import java.io.File; 132import java.io.FileDescriptor; 133import java.io.FileNotFoundException; 134import java.io.FileReader; 135import java.io.IOException; 136import java.io.PrintWriter; 137import java.net.Inet4Address; 138import java.net.InetAddress; 139import java.net.UnknownHostException; 140import java.util.ArrayList; 141import java.util.Arrays; 142import java.util.Collection; 143import java.util.HashMap; 144import java.util.HashSet; 145import java.util.Iterator; 146import java.util.List; 147import java.util.Map; 148import java.util.Objects; 149import java.util.concurrent.atomic.AtomicInteger; 150 151/** 152 * @hide 153 */ 154public class ConnectivityService extends IConnectivityManager.Stub 155 implements PendingIntent.OnFinished { 156 private static final String TAG = "ConnectivityService"; 157 158 private static final boolean DBG = true; 159 private static final boolean VDBG = false; 160 161 private static final boolean LOGD_RULES = false; 162 163 // TODO: create better separation between radio types and network types 164 165 // how long to wait before switching back to a radio's default network 166 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 167 // system property that can override the above value 168 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 169 "android.telephony.apn-restore"; 170 171 // How long to wait before putting up a "This network doesn't have an Internet connection, 172 // connect anyway?" dialog after the user selects a network that doesn't validate. 173 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 174 175 // How long to delay to removal of a pending intent based request. 176 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 177 private final int mReleasePendingIntentDelayMs; 178 179 private Tethering mTethering; 180 181 private final PermissionMonitor mPermissionMonitor; 182 183 private KeyStore mKeyStore; 184 185 @GuardedBy("mVpns") 186 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 187 188 private boolean mLockdownEnabled; 189 private LockdownVpnTracker mLockdownTracker; 190 191 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 192 private Object mRulesLock = new Object(); 193 /** Currently active network rules by UID. */ 194 private SparseIntArray mUidRules = new SparseIntArray(); 195 /** Set of ifaces that are costly. */ 196 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 197 198 final private Context mContext; 199 private int mNetworkPreference; 200 // 0 is full bad, 100 is full good 201 private int mDefaultInetConditionPublished = 0; 202 203 private int mNumDnsEntries; 204 205 private boolean mTestMode; 206 private static ConnectivityService sServiceInstance; 207 208 private INetworkManagementService mNetd; 209 private INetworkStatsService mStatsService; 210 private INetworkPolicyManager mPolicyManager; 211 212 private String mCurrentTcpBufferSizes; 213 214 private static final int ENABLED = 1; 215 private static final int DISABLED = 0; 216 217 // Arguments to rematchNetworkAndRequests() 218 private enum NascentState { 219 // Indicates a network was just validated for the first time. If the network is found to 220 // be unwanted (i.e. not satisfy any NetworkRequests) it is torn down. 221 JUST_VALIDATED, 222 // Indicates a network was not validated for the first time immediately prior to this call. 223 NOT_JUST_VALIDATED 224 }; 225 private enum ReapUnvalidatedNetworks { 226 // Tear down unvalidated networks that have no chance (i.e. even if validated) of becoming 227 // the highest scoring network satisfying a NetworkRequest. This should be passed when it's 228 // known that there may be unvalidated networks that could potentially be reaped, and when 229 // all networks have been rematched against all NetworkRequests. 230 REAP, 231 // Don't reap unvalidated networks. This should be passed when it's known that there are 232 // no unvalidated networks that could potentially be reaped, and when some networks have 233 // not yet been rematched against all NetworkRequests. 234 DONT_REAP 235 }; 236 237 /** 238 * used internally to change our mobile data enabled flag 239 */ 240 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 241 242 /** 243 * used internally to clear a wakelock when transitioning 244 * from one net to another. Clear happens when we get a new 245 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 246 * after a timeout if no network is found (typically 1 min). 247 */ 248 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 249 250 /** 251 * used internally to reload global proxy settings 252 */ 253 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 254 255 /** 256 * used internally to send a sticky broadcast delayed. 257 */ 258 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 259 260 /** 261 * PAC manager has received new port. 262 */ 263 private static final int EVENT_PROXY_HAS_CHANGED = 16; 264 265 /** 266 * used internally when registering NetworkFactories 267 * obj = NetworkFactoryInfo 268 */ 269 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 270 271 /** 272 * used internally when registering NetworkAgents 273 * obj = Messenger 274 */ 275 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 276 277 /** 278 * used to add a network request 279 * includes a NetworkRequestInfo 280 */ 281 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 282 283 /** 284 * indicates a timeout period is over - check if we had a network yet or not 285 * and if not, call the timeout calback (but leave the request live until they 286 * cancel it. 287 * includes a NetworkRequestInfo 288 */ 289 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 290 291 /** 292 * used to add a network listener - no request 293 * includes a NetworkRequestInfo 294 */ 295 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 296 297 /** 298 * used to remove a network request, either a listener or a real request 299 * arg1 = UID of caller 300 * obj = NetworkRequest 301 */ 302 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 303 304 /** 305 * used internally when registering NetworkFactories 306 * obj = Messenger 307 */ 308 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 309 310 /** 311 * used internally to expire a wakelock when transitioning 312 * from one net to another. Expire happens when we fail to find 313 * a new network (typically after 1 minute) - 314 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 315 * a replacement network. 316 */ 317 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 318 319 /** 320 * Used internally to indicate the system is ready. 321 */ 322 private static final int EVENT_SYSTEM_READY = 25; 323 324 /** 325 * used to add a network request with a pending intent 326 * includes a NetworkRequestInfo 327 */ 328 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 329 330 /** 331 * used to remove a pending intent and its associated network request. 332 * arg1 = UID of caller 333 * obj = PendingIntent 334 */ 335 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 336 337 /** 338 * used to specify whether a network should be used even if unvalidated. 339 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 340 * arg2 = whether to remember this choice in the future (1 or 0) 341 * obj = network 342 */ 343 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 344 345 /** 346 * used to ask the user to confirm a connection to an unvalidated network. 347 * obj = network 348 */ 349 private static final int EVENT_PROMPT_UNVALIDATED = 29; 350 351 /** 352 * used internally to (re)configure mobile data always-on settings. 353 */ 354 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 355 356 /** Handler used for internal events. */ 357 final private InternalHandler mHandler; 358 /** Handler used for incoming {@link NetworkStateTracker} events. */ 359 final private NetworkStateTrackerHandler mTrackerHandler; 360 361 private boolean mSystemReady; 362 private Intent mInitialBroadcast; 363 364 private PowerManager.WakeLock mNetTransitionWakeLock; 365 private String mNetTransitionWakeLockCausedBy = ""; 366 private int mNetTransitionWakeLockSerialNumber; 367 private int mNetTransitionWakeLockTimeout; 368 private final PowerManager.WakeLock mPendingIntentWakeLock; 369 370 private InetAddress mDefaultDns; 371 372 // used in DBG mode to track inet condition reports 373 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 374 private ArrayList mInetLog; 375 376 // track the current default http proxy - tell the world if we get a new one (real change) 377 private volatile ProxyInfo mDefaultProxy = null; 378 private Object mProxyLock = new Object(); 379 private boolean mDefaultProxyDisabled = false; 380 381 // track the global proxy. 382 private ProxyInfo mGlobalProxy = null; 383 384 private PacManager mPacManager = null; 385 386 final private SettingsObserver mSettingsObserver; 387 388 private UserManager mUserManager; 389 390 NetworkConfig[] mNetConfigs; 391 int mNetworksDefined; 392 393 // the set of network types that can only be enabled by system/sig apps 394 List mProtectedNetworks; 395 396 private DataConnectionStats mDataConnectionStats; 397 398 TelephonyManager mTelephonyManager; 399 400 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 401 private final static int MIN_NET_ID = 100; // some reserved marks 402 private final static int MAX_NET_ID = 65535; 403 private int mNextNetId = MIN_NET_ID; 404 405 // sequence number of NetworkRequests 406 private int mNextNetworkRequestId = 1; 407 408 /** 409 * Implements support for the legacy "one network per network type" model. 410 * 411 * We used to have a static array of NetworkStateTrackers, one for each 412 * network type, but that doesn't work any more now that we can have, 413 * for example, more that one wifi network. This class stores all the 414 * NetworkAgentInfo objects that support a given type, but the legacy 415 * API will only see the first one. 416 * 417 * It serves two main purposes: 418 * 419 * 1. Provide information about "the network for a given type" (since this 420 * API only supports one). 421 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 422 * the first network for a given type changes, or if the default network 423 * changes. 424 */ 425 private class LegacyTypeTracker { 426 427 private static final boolean DBG = true; 428 private static final boolean VDBG = false; 429 private static final String TAG = "CSLegacyTypeTracker"; 430 431 /** 432 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 433 * Each list holds references to all NetworkAgentInfos that are used to 434 * satisfy requests for that network type. 435 * 436 * This array is built out at startup such that an unsupported network 437 * doesn't get an ArrayList instance, making this a tristate: 438 * unsupported, supported but not active and active. 439 * 440 * The actual lists are populated when we scan the network types that 441 * are supported on this device. 442 */ 443 private ArrayList<NetworkAgentInfo> mTypeLists[]; 444 445 public LegacyTypeTracker() { 446 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 447 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 448 } 449 450 public void addSupportedType(int type) { 451 if (mTypeLists[type] != null) { 452 throw new IllegalStateException( 453 "legacy list for type " + type + "already initialized"); 454 } 455 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 456 } 457 458 public boolean isTypeSupported(int type) { 459 return isNetworkTypeValid(type) && mTypeLists[type] != null; 460 } 461 462 public NetworkAgentInfo getNetworkForType(int type) { 463 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 464 return mTypeLists[type].get(0); 465 } else { 466 return null; 467 } 468 } 469 470 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type, 471 boolean isDefaultNetwork) { 472 if (DBG) { 473 log("Sending " + (connected ? "connected" : "disconnected") + 474 " broadcast for type " + type + " " + nai.name() + 475 " isDefaultNetwork=" + isDefaultNetwork); 476 } 477 } 478 479 /** Adds the given network to the specified legacy type list. */ 480 public void add(int type, NetworkAgentInfo nai) { 481 if (!isTypeSupported(type)) { 482 return; // Invalid network type. 483 } 484 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 485 486 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 487 if (list.contains(nai)) { 488 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 489 return; 490 } 491 492 list.add(nai); 493 494 // Send a broadcast if this is the first network of its type or if it's the default. 495 final boolean isDefaultNetwork = isDefaultNetwork(nai); 496 if (list.size() == 1 || isDefaultNetwork) { 497 maybeLogBroadcast(nai, true, type, isDefaultNetwork); 498 sendLegacyNetworkBroadcast(nai, true, type); 499 } 500 } 501 502 /** Removes the given network from the specified legacy type list. */ 503 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 504 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 505 if (list == null || list.isEmpty()) { 506 return; 507 } 508 509 final boolean wasFirstNetwork = list.get(0).equals(nai); 510 511 if (!list.remove(nai)) { 512 return; 513 } 514 515 if (wasFirstNetwork || wasDefault) { 516 maybeLogBroadcast(nai, false, type, wasDefault); 517 sendLegacyNetworkBroadcast(nai, false, type); 518 } 519 520 if (!list.isEmpty() && wasFirstNetwork) { 521 if (DBG) log("Other network available for type " + type + 522 ", sending connected broadcast"); 523 final NetworkAgentInfo replacement = list.get(0); 524 maybeLogBroadcast(replacement, false, type, isDefaultNetwork(replacement)); 525 sendLegacyNetworkBroadcast(replacement, false, type); 526 } 527 } 528 529 /** Removes the given network from all legacy type lists. */ 530 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 531 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 532 for (int type = 0; type < mTypeLists.length; type++) { 533 remove(type, nai, wasDefault); 534 } 535 } 536 537 private String naiToString(NetworkAgentInfo nai) { 538 String name = (nai != null) ? nai.name() : "null"; 539 String state = (nai.networkInfo != null) ? 540 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 541 "???/???"; 542 return name + " " + state; 543 } 544 545 public void dump(IndentingPrintWriter pw) { 546 pw.println("mLegacyTypeTracker:"); 547 pw.increaseIndent(); 548 pw.print("Supported types:"); 549 for (int type = 0; type < mTypeLists.length; type++) { 550 if (mTypeLists[type] != null) pw.print(" " + type); 551 } 552 pw.println(); 553 pw.println("Current state:"); 554 pw.increaseIndent(); 555 for (int type = 0; type < mTypeLists.length; type++) { 556 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 557 for (NetworkAgentInfo nai : mTypeLists[type]) { 558 pw.println(type + " " + naiToString(nai)); 559 } 560 } 561 pw.decreaseIndent(); 562 pw.decreaseIndent(); 563 pw.println(); 564 } 565 566 // This class needs its own log method because it has a different TAG. 567 private void log(String s) { 568 Slog.d(TAG, s); 569 } 570 571 } 572 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 573 574 public ConnectivityService(Context context, INetworkManagementService netManager, 575 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 576 if (DBG) log("ConnectivityService starting up"); 577 578 mDefaultRequest = createInternetRequestForTransport(-1); 579 mNetworkRequests.put(mDefaultRequest, new NetworkRequestInfo( 580 null, mDefaultRequest, new Binder(), NetworkRequestInfo.REQUEST)); 581 582 mDefaultMobileDataRequest = createInternetRequestForTransport( 583 NetworkCapabilities.TRANSPORT_CELLULAR); 584 585 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 586 handlerThread.start(); 587 mHandler = new InternalHandler(handlerThread.getLooper()); 588 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 589 590 // setup our unique device name 591 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 592 String id = Settings.Secure.getString(context.getContentResolver(), 593 Settings.Secure.ANDROID_ID); 594 if (id != null && id.length() > 0) { 595 String name = new String("android-").concat(id); 596 SystemProperties.set("net.hostname", name); 597 } 598 } 599 600 // read our default dns server ip 601 String dns = Settings.Global.getString(context.getContentResolver(), 602 Settings.Global.DEFAULT_DNS_SERVER); 603 if (dns == null || dns.length() == 0) { 604 dns = context.getResources().getString( 605 com.android.internal.R.string.config_default_dns_server); 606 } 607 try { 608 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 609 } catch (IllegalArgumentException e) { 610 loge("Error setting defaultDns using " + dns); 611 } 612 613 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 614 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 615 616 mContext = checkNotNull(context, "missing Context"); 617 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 618 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 619 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 620 mKeyStore = KeyStore.getInstance(); 621 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 622 623 try { 624 mPolicyManager.registerListener(mPolicyListener); 625 } catch (RemoteException e) { 626 // ouch, no rules updates means some processes may never get network 627 loge("unable to register INetworkPolicyListener" + e.toString()); 628 } 629 630 final PowerManager powerManager = (PowerManager) context.getSystemService( 631 Context.POWER_SERVICE); 632 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 633 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 634 com.android.internal.R.integer.config_networkTransitionTimeout); 635 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 636 637 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 638 639 // TODO: What is the "correct" way to do determine if this is a wifi only device? 640 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 641 log("wifiOnly=" + wifiOnly); 642 String[] naStrings = context.getResources().getStringArray( 643 com.android.internal.R.array.networkAttributes); 644 for (String naString : naStrings) { 645 try { 646 NetworkConfig n = new NetworkConfig(naString); 647 if (VDBG) log("naString=" + naString + " config=" + n); 648 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 649 loge("Error in networkAttributes - ignoring attempt to define type " + 650 n.type); 651 continue; 652 } 653 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 654 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 655 n.type); 656 continue; 657 } 658 if (mNetConfigs[n.type] != null) { 659 loge("Error in networkAttributes - ignoring attempt to redefine type " + 660 n.type); 661 continue; 662 } 663 mLegacyTypeTracker.addSupportedType(n.type); 664 665 mNetConfigs[n.type] = n; 666 mNetworksDefined++; 667 } catch(Exception e) { 668 // ignore it - leave the entry null 669 } 670 } 671 672 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 673 if (mNetConfigs[TYPE_VPN] == null) { 674 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 675 // don't need to add TYPE_VPN to mNetConfigs. 676 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 677 mNetworksDefined++; // used only in the log() statement below. 678 } 679 680 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 681 682 mProtectedNetworks = new ArrayList<Integer>(); 683 int[] protectedNetworks = context.getResources().getIntArray( 684 com.android.internal.R.array.config_protectedNetworks); 685 for (int p : protectedNetworks) { 686 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 687 mProtectedNetworks.add(p); 688 } else { 689 if (DBG) loge("Ignoring protectedNetwork " + p); 690 } 691 } 692 693 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 694 && SystemProperties.get("ro.build.type").equals("eng"); 695 696 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 697 698 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 699 700 //set up the listener for user state for creating user VPNs 701 IntentFilter intentFilter = new IntentFilter(); 702 intentFilter.addAction(Intent.ACTION_USER_STARTING); 703 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 704 mContext.registerReceiverAsUser( 705 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 706 707 try { 708 mNetd.registerObserver(mTethering); 709 mNetd.registerObserver(mDataActivityObserver); 710 } catch (RemoteException e) { 711 loge("Error registering observer :" + e); 712 } 713 714 if (DBG) { 715 mInetLog = new ArrayList(); 716 } 717 718 mSettingsObserver = new SettingsObserver(mContext, mHandler); 719 registerSettingsCallbacks(); 720 721 mDataConnectionStats = new DataConnectionStats(mContext); 722 mDataConnectionStats.startMonitoring(); 723 724 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 725 726 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 727 } 728 729 private NetworkRequest createInternetRequestForTransport(int transportType) { 730 NetworkCapabilities netCap = new NetworkCapabilities(); 731 netCap.addCapability(NET_CAPABILITY_INTERNET); 732 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 733 if (transportType > -1) { 734 netCap.addTransportType(transportType); 735 } 736 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 737 } 738 739 private void handleMobileDataAlwaysOn() { 740 final boolean enable = (Settings.Global.getInt( 741 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 742 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 743 if (enable == isEnabled) { 744 return; // Nothing to do. 745 } 746 747 if (enable) { 748 handleRegisterNetworkRequest(new NetworkRequestInfo( 749 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestInfo.REQUEST)); 750 } else { 751 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 752 } 753 } 754 755 private void registerSettingsCallbacks() { 756 // Watch for global HTTP proxy changes. 757 mSettingsObserver.observe( 758 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 759 EVENT_APPLY_GLOBAL_HTTP_PROXY); 760 761 // Watch for whether or not to keep mobile data always on. 762 mSettingsObserver.observe( 763 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 764 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 765 } 766 767 private synchronized int nextNetworkRequestId() { 768 return mNextNetworkRequestId++; 769 } 770 771 private int reserveNetId() { 772 synchronized (mNetworkForNetId) { 773 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 774 int netId = mNextNetId; 775 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 776 // Make sure NetID unused. http://b/16815182 777 if (!mNetIdInUse.get(netId)) { 778 mNetIdInUse.put(netId, true); 779 return netId; 780 } 781 } 782 } 783 throw new IllegalStateException("No free netIds"); 784 } 785 786 private NetworkState getFilteredNetworkState(int networkType, int uid) { 787 NetworkInfo info = null; 788 LinkProperties lp = null; 789 NetworkCapabilities nc = null; 790 Network network = null; 791 String subscriberId = null; 792 793 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 794 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 795 if (nai != null) { 796 synchronized (nai) { 797 info = new NetworkInfo(nai.networkInfo); 798 lp = new LinkProperties(nai.linkProperties); 799 nc = new NetworkCapabilities(nai.networkCapabilities); 800 // Network objects are outwardly immutable so there is no point to duplicating. 801 // Duplicating also precludes sharing socket factories and connection pools. 802 network = nai.network; 803 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 804 } 805 info.setType(networkType); 806 } else { 807 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 808 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 809 info.setIsAvailable(true); 810 lp = new LinkProperties(); 811 nc = new NetworkCapabilities(); 812 network = null; 813 } 814 info = getFilteredNetworkInfo(info, lp, uid); 815 } 816 817 return new NetworkState(info, lp, nc, network, subscriberId, null); 818 } 819 820 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 821 if (network == null) { 822 return null; 823 } 824 synchronized (mNetworkForNetId) { 825 return mNetworkForNetId.get(network.netId); 826 } 827 }; 828 829 private Network[] getVpnUnderlyingNetworks(int uid) { 830 if (!mLockdownEnabled) { 831 int user = UserHandle.getUserId(uid); 832 synchronized (mVpns) { 833 Vpn vpn = mVpns.get(user); 834 if (vpn != null && vpn.appliesToUid(uid)) { 835 return vpn.getUnderlyingNetworks(); 836 } 837 } 838 } 839 return null; 840 } 841 842 private NetworkState getUnfilteredActiveNetworkState(int uid) { 843 NetworkInfo info = null; 844 LinkProperties lp = null; 845 NetworkCapabilities nc = null; 846 Network network = null; 847 String subscriberId = null; 848 849 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 850 851 final Network[] networks = getVpnUnderlyingNetworks(uid); 852 if (networks != null) { 853 // getUnderlyingNetworks() returns: 854 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 855 // empty array => the VPN explicitly said "no default network". 856 // non-empty array => the VPN specified one or more default networks; we use the 857 // first one. 858 if (networks.length > 0) { 859 nai = getNetworkAgentInfoForNetwork(networks[0]); 860 } else { 861 nai = null; 862 } 863 } 864 865 if (nai != null) { 866 synchronized (nai) { 867 info = new NetworkInfo(nai.networkInfo); 868 lp = new LinkProperties(nai.linkProperties); 869 nc = new NetworkCapabilities(nai.networkCapabilities); 870 // Network objects are outwardly immutable so there is no point to duplicating. 871 // Duplicating also precludes sharing socket factories and connection pools. 872 network = nai.network; 873 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 874 } 875 } 876 877 return new NetworkState(info, lp, nc, network, subscriberId, null); 878 } 879 880 /** 881 * Check if UID should be blocked from using the network with the given LinkProperties. 882 */ 883 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 884 final boolean networkCostly; 885 final int uidRules; 886 887 final String iface = (lp == null ? "" : lp.getInterfaceName()); 888 synchronized (mRulesLock) { 889 networkCostly = mMeteredIfaces.contains(iface); 890 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 891 } 892 893 if ((uidRules & RULE_REJECT_ALL) != 0 894 || (networkCostly && (uidRules & RULE_REJECT_METERED) != 0)) { 895 return true; 896 } 897 898 // no restrictive rules; network is visible 899 return false; 900 } 901 902 /** 903 * Return a filtered {@link NetworkInfo}, potentially marked 904 * {@link DetailedState#BLOCKED} based on 905 * {@link #isNetworkWithLinkPropertiesBlocked}. 906 */ 907 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 908 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 909 // network is blocked; clone and override state 910 info = new NetworkInfo(info); 911 info.setDetailedState(DetailedState.BLOCKED, null, null); 912 if (VDBG) { 913 log("returning Blocked NetworkInfo for ifname=" + 914 lp.getInterfaceName() + ", uid=" + uid); 915 } 916 } 917 if (info != null && mLockdownTracker != null) { 918 info = mLockdownTracker.augmentNetworkInfo(info); 919 if (VDBG) log("returning Locked NetworkInfo"); 920 } 921 return info; 922 } 923 924 /** 925 * Return NetworkInfo for the active (i.e., connected) network interface. 926 * It is assumed that at most one network is active at a time. If more 927 * than one is active, it is indeterminate which will be returned. 928 * @return the info for the active network, or {@code null} if none is 929 * active 930 */ 931 @Override 932 public NetworkInfo getActiveNetworkInfo() { 933 enforceAccessPermission(); 934 final int uid = Binder.getCallingUid(); 935 NetworkState state = getUnfilteredActiveNetworkState(uid); 936 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 937 } 938 939 @Override 940 public Network getActiveNetwork() { 941 enforceAccessPermission(); 942 final int uid = Binder.getCallingUid(); 943 final int user = UserHandle.getUserId(uid); 944 int vpnNetId = NETID_UNSET; 945 synchronized (mVpns) { 946 final Vpn vpn = mVpns.get(user); 947 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 948 } 949 NetworkAgentInfo nai; 950 if (vpnNetId != NETID_UNSET) { 951 synchronized (mNetworkForNetId) { 952 nai = mNetworkForNetId.get(vpnNetId); 953 } 954 if (nai != null) return nai.network; 955 } 956 nai = getDefaultNetwork(); 957 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 958 return nai != null ? nai.network : null; 959 } 960 961 /** 962 * Find the first Provisioning network. 963 * 964 * @return NetworkInfo or null if none. 965 */ 966 private NetworkInfo getProvisioningNetworkInfo() { 967 enforceAccessPermission(); 968 969 // Find the first Provisioning Network 970 NetworkInfo provNi = null; 971 for (NetworkInfo ni : getAllNetworkInfo()) { 972 if (ni.isConnectedToProvisioningNetwork()) { 973 provNi = ni; 974 break; 975 } 976 } 977 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 978 return provNi; 979 } 980 981 /** 982 * Find the first Provisioning network or the ActiveDefaultNetwork 983 * if there is no Provisioning network 984 * 985 * @return NetworkInfo or null if none. 986 */ 987 @Override 988 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 989 enforceAccessPermission(); 990 991 NetworkInfo provNi = getProvisioningNetworkInfo(); 992 if (provNi == null) { 993 provNi = getActiveNetworkInfo(); 994 } 995 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 996 return provNi; 997 } 998 999 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1000 enforceAccessPermission(); 1001 final int uid = Binder.getCallingUid(); 1002 NetworkState state = getUnfilteredActiveNetworkState(uid); 1003 return state.networkInfo; 1004 } 1005 1006 @Override 1007 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1008 enforceConnectivityInternalPermission(); 1009 NetworkState state = getUnfilteredActiveNetworkState(uid); 1010 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1011 } 1012 1013 @Override 1014 public NetworkInfo getNetworkInfo(int networkType) { 1015 enforceAccessPermission(); 1016 final int uid = Binder.getCallingUid(); 1017 if (getVpnUnderlyingNetworks(uid) != null) { 1018 // A VPN is active, so we may need to return one of its underlying networks. This 1019 // information is not available in LegacyTypeTracker, so we have to get it from 1020 // getUnfilteredActiveNetworkState. 1021 NetworkState state = getUnfilteredActiveNetworkState(uid); 1022 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1023 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1024 } 1025 } 1026 NetworkState state = getFilteredNetworkState(networkType, uid); 1027 return state.networkInfo; 1028 } 1029 1030 @Override 1031 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1032 enforceAccessPermission(); 1033 final int uid = Binder.getCallingUid(); 1034 NetworkInfo info = null; 1035 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1036 if (nai != null) { 1037 synchronized (nai) { 1038 info = new NetworkInfo(nai.networkInfo); 1039 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1040 } 1041 } 1042 return info; 1043 } 1044 1045 @Override 1046 public NetworkInfo[] getAllNetworkInfo() { 1047 enforceAccessPermission(); 1048 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1049 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1050 networkType++) { 1051 NetworkInfo info = getNetworkInfo(networkType); 1052 if (info != null) { 1053 result.add(info); 1054 } 1055 } 1056 return result.toArray(new NetworkInfo[result.size()]); 1057 } 1058 1059 @Override 1060 public Network getNetworkForType(int networkType) { 1061 enforceAccessPermission(); 1062 final int uid = Binder.getCallingUid(); 1063 NetworkState state = getFilteredNetworkState(networkType, uid); 1064 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1065 return state.network; 1066 } 1067 return null; 1068 } 1069 1070 @Override 1071 public Network[] getAllNetworks() { 1072 enforceAccessPermission(); 1073 synchronized (mNetworkForNetId) { 1074 final Network[] result = new Network[mNetworkForNetId.size()]; 1075 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1076 result[i] = mNetworkForNetId.valueAt(i).network; 1077 } 1078 return result; 1079 } 1080 } 1081 1082 @Override 1083 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1084 // The basic principle is: if an app's traffic could possibly go over a 1085 // network, without the app doing anything multinetwork-specific, 1086 // (hence, by "default"), then include that network's capabilities in 1087 // the array. 1088 // 1089 // In the normal case, app traffic only goes over the system's default 1090 // network connection, so that's the only network returned. 1091 // 1092 // With a VPN in force, some app traffic may go into the VPN, and thus 1093 // over whatever underlying networks the VPN specifies, while other app 1094 // traffic may go over the system default network (e.g.: a split-tunnel 1095 // VPN, or an app disallowed by the VPN), so the set of networks 1096 // returned includes the VPN's underlying networks and the system 1097 // default. 1098 enforceAccessPermission(); 1099 1100 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1101 1102 NetworkAgentInfo nai = getDefaultNetwork(); 1103 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1104 if (nc != null) { 1105 result.put(nai.network, nc); 1106 } 1107 1108 if (!mLockdownEnabled) { 1109 synchronized (mVpns) { 1110 Vpn vpn = mVpns.get(userId); 1111 if (vpn != null) { 1112 Network[] networks = vpn.getUnderlyingNetworks(); 1113 if (networks != null) { 1114 for (Network network : networks) { 1115 nai = getNetworkAgentInfoForNetwork(network); 1116 nc = getNetworkCapabilitiesInternal(nai); 1117 if (nc != null) { 1118 result.put(network, nc); 1119 } 1120 } 1121 } 1122 } 1123 } 1124 } 1125 1126 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1127 out = result.values().toArray(out); 1128 return out; 1129 } 1130 1131 @Override 1132 public boolean isNetworkSupported(int networkType) { 1133 enforceAccessPermission(); 1134 return mLegacyTypeTracker.isTypeSupported(networkType); 1135 } 1136 1137 /** 1138 * Return LinkProperties for the active (i.e., connected) default 1139 * network interface. It is assumed that at most one default network 1140 * is active at a time. If more than one is active, it is indeterminate 1141 * which will be returned. 1142 * @return the ip properties for the active network, or {@code null} if 1143 * none is active 1144 */ 1145 @Override 1146 public LinkProperties getActiveLinkProperties() { 1147 enforceAccessPermission(); 1148 final int uid = Binder.getCallingUid(); 1149 NetworkState state = getUnfilteredActiveNetworkState(uid); 1150 return state.linkProperties; 1151 } 1152 1153 @Override 1154 public LinkProperties getLinkPropertiesForType(int networkType) { 1155 enforceAccessPermission(); 1156 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1157 if (nai != null) { 1158 synchronized (nai) { 1159 return new LinkProperties(nai.linkProperties); 1160 } 1161 } 1162 return null; 1163 } 1164 1165 // TODO - this should be ALL networks 1166 @Override 1167 public LinkProperties getLinkProperties(Network network) { 1168 enforceAccessPermission(); 1169 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1170 if (nai != null) { 1171 synchronized (nai) { 1172 return new LinkProperties(nai.linkProperties); 1173 } 1174 } 1175 return null; 1176 } 1177 1178 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1179 if (nai != null) { 1180 synchronized (nai) { 1181 if (nai.networkCapabilities != null) { 1182 return new NetworkCapabilities(nai.networkCapabilities); 1183 } 1184 } 1185 } 1186 return null; 1187 } 1188 1189 @Override 1190 public NetworkCapabilities getNetworkCapabilities(Network network) { 1191 enforceAccessPermission(); 1192 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1193 } 1194 1195 @Override 1196 public NetworkState[] getAllNetworkState() { 1197 // Require internal since we're handing out IMSI details 1198 enforceConnectivityInternalPermission(); 1199 1200 final ArrayList<NetworkState> result = Lists.newArrayList(); 1201 for (Network network : getAllNetworks()) { 1202 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1203 if (nai != null) { 1204 synchronized (nai) { 1205 final String subscriberId = (nai.networkMisc != null) 1206 ? nai.networkMisc.subscriberId : null; 1207 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1208 nai.networkCapabilities, network, subscriberId, null)); 1209 } 1210 } 1211 } 1212 return result.toArray(new NetworkState[result.size()]); 1213 } 1214 1215 @Override 1216 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1217 enforceAccessPermission(); 1218 final int uid = Binder.getCallingUid(); 1219 final long token = Binder.clearCallingIdentity(); 1220 try { 1221 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1222 if (state.networkInfo != null) { 1223 try { 1224 return mPolicyManager.getNetworkQuotaInfo(state); 1225 } catch (RemoteException e) { 1226 } 1227 } 1228 return null; 1229 } finally { 1230 Binder.restoreCallingIdentity(token); 1231 } 1232 } 1233 1234 @Override 1235 public boolean isActiveNetworkMetered() { 1236 enforceAccessPermission(); 1237 final int uid = Binder.getCallingUid(); 1238 final long token = Binder.clearCallingIdentity(); 1239 try { 1240 return isActiveNetworkMeteredUnchecked(uid); 1241 } finally { 1242 Binder.restoreCallingIdentity(token); 1243 } 1244 } 1245 1246 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1247 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1248 if (state.networkInfo != null) { 1249 try { 1250 return mPolicyManager.isNetworkMetered(state); 1251 } catch (RemoteException e) { 1252 } 1253 } 1254 return false; 1255 } 1256 1257 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1258 @Override 1259 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1260 int deviceType = Integer.parseInt(label); 1261 sendDataActivityBroadcast(deviceType, active, tsNanos); 1262 } 1263 }; 1264 1265 /** 1266 * Ensure that a network route exists to deliver traffic to the specified 1267 * host via the specified network interface. 1268 * @param networkType the type of the network over which traffic to the 1269 * specified host is to be routed 1270 * @param hostAddress the IP address of the host to which the route is 1271 * desired 1272 * @return {@code true} on success, {@code false} on failure 1273 */ 1274 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1275 enforceChangePermission(); 1276 if (mProtectedNetworks.contains(networkType)) { 1277 enforceConnectivityInternalPermission(); 1278 } 1279 1280 InetAddress addr; 1281 try { 1282 addr = InetAddress.getByAddress(hostAddress); 1283 } catch (UnknownHostException e) { 1284 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1285 return false; 1286 } 1287 1288 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1289 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1290 return false; 1291 } 1292 1293 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1294 if (nai == null) { 1295 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1296 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1297 } else { 1298 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1299 } 1300 return false; 1301 } 1302 1303 DetailedState netState; 1304 synchronized (nai) { 1305 netState = nai.networkInfo.getDetailedState(); 1306 } 1307 1308 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1309 if (VDBG) { 1310 log("requestRouteToHostAddress on down network " 1311 + "(" + networkType + ") - dropped" 1312 + " netState=" + netState); 1313 } 1314 return false; 1315 } 1316 1317 final int uid = Binder.getCallingUid(); 1318 final long token = Binder.clearCallingIdentity(); 1319 try { 1320 LinkProperties lp; 1321 int netId; 1322 synchronized (nai) { 1323 lp = nai.linkProperties; 1324 netId = nai.network.netId; 1325 } 1326 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1327 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1328 return ok; 1329 } finally { 1330 Binder.restoreCallingIdentity(token); 1331 } 1332 } 1333 1334 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1335 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1336 if (bestRoute == null) { 1337 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1338 } else { 1339 String iface = bestRoute.getInterface(); 1340 if (bestRoute.getGateway().equals(addr)) { 1341 // if there is no better route, add the implied hostroute for our gateway 1342 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1343 } else { 1344 // if we will connect to this through another route, add a direct route 1345 // to it's gateway 1346 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1347 } 1348 } 1349 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1350 try { 1351 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1352 } catch (Exception e) { 1353 // never crash - catch them all 1354 if (DBG) loge("Exception trying to add a route: " + e); 1355 return false; 1356 } 1357 return true; 1358 } 1359 1360 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1361 @Override 1362 public void onUidRulesChanged(int uid, int uidRules) { 1363 // caller is NPMS, since we only register with them 1364 if (LOGD_RULES) { 1365 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1366 } 1367 1368 synchronized (mRulesLock) { 1369 // skip update when we've already applied rules 1370 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1371 if (oldRules == uidRules) return; 1372 1373 mUidRules.put(uid, uidRules); 1374 } 1375 1376 // TODO: notify UID when it has requested targeted updates 1377 } 1378 1379 @Override 1380 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1381 // caller is NPMS, since we only register with them 1382 if (LOGD_RULES) { 1383 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1384 } 1385 1386 synchronized (mRulesLock) { 1387 mMeteredIfaces.clear(); 1388 for (String iface : meteredIfaces) { 1389 mMeteredIfaces.add(iface); 1390 } 1391 } 1392 } 1393 1394 @Override 1395 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1396 // caller is NPMS, since we only register with them 1397 if (LOGD_RULES) { 1398 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1399 } 1400 } 1401 }; 1402 1403 /** 1404 * Require that the caller is either in the same user or has appropriate permission to interact 1405 * across users. 1406 * 1407 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1408 */ 1409 private void enforceCrossUserPermission(int userId) { 1410 if (userId == UserHandle.getCallingUserId()) { 1411 // Not a cross-user call. 1412 return; 1413 } 1414 mContext.enforceCallingOrSelfPermission( 1415 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1416 "ConnectivityService"); 1417 } 1418 1419 private void enforceInternetPermission() { 1420 mContext.enforceCallingOrSelfPermission( 1421 android.Manifest.permission.INTERNET, 1422 "ConnectivityService"); 1423 } 1424 1425 private void enforceAccessPermission() { 1426 mContext.enforceCallingOrSelfPermission( 1427 android.Manifest.permission.ACCESS_NETWORK_STATE, 1428 "ConnectivityService"); 1429 } 1430 1431 private void enforceChangePermission() { 1432 mContext.enforceCallingOrSelfPermission( 1433 android.Manifest.permission.CHANGE_NETWORK_STATE, 1434 "ConnectivityService"); 1435 } 1436 1437 private void enforceTetherAccessPermission() { 1438 mContext.enforceCallingOrSelfPermission( 1439 android.Manifest.permission.ACCESS_NETWORK_STATE, 1440 "ConnectivityService"); 1441 } 1442 1443 private void enforceConnectivityInternalPermission() { 1444 mContext.enforceCallingOrSelfPermission( 1445 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1446 "ConnectivityService"); 1447 } 1448 1449 public void sendConnectedBroadcast(NetworkInfo info) { 1450 enforceConnectivityInternalPermission(); 1451 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1452 } 1453 1454 private void sendInetConditionBroadcast(NetworkInfo info) { 1455 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1456 } 1457 1458 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1459 if (mLockdownTracker != null) { 1460 info = mLockdownTracker.augmentNetworkInfo(info); 1461 } 1462 1463 Intent intent = new Intent(bcastType); 1464 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1465 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1466 if (info.isFailover()) { 1467 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1468 info.setFailover(false); 1469 } 1470 if (info.getReason() != null) { 1471 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1472 } 1473 if (info.getExtraInfo() != null) { 1474 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1475 info.getExtraInfo()); 1476 } 1477 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1478 return intent; 1479 } 1480 1481 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1482 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1483 } 1484 1485 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1486 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1487 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1488 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1489 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1490 final long ident = Binder.clearCallingIdentity(); 1491 try { 1492 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1493 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1494 } finally { 1495 Binder.restoreCallingIdentity(ident); 1496 } 1497 } 1498 1499 private void sendStickyBroadcast(Intent intent) { 1500 synchronized(this) { 1501 if (!mSystemReady) { 1502 mInitialBroadcast = new Intent(intent); 1503 } 1504 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1505 if (DBG) { 1506 log("sendStickyBroadcast: action=" + intent.getAction()); 1507 } 1508 1509 final long ident = Binder.clearCallingIdentity(); 1510 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1511 final IBatteryStats bs = BatteryStatsService.getService(); 1512 try { 1513 NetworkInfo ni = intent.getParcelableExtra( 1514 ConnectivityManager.EXTRA_NETWORK_INFO); 1515 bs.noteConnectivityChanged(intent.getIntExtra( 1516 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1517 ni != null ? ni.getState().toString() : "?"); 1518 } catch (RemoteException e) { 1519 } 1520 } 1521 try { 1522 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1523 } finally { 1524 Binder.restoreCallingIdentity(ident); 1525 } 1526 } 1527 } 1528 1529 void systemReady() { 1530 loadGlobalProxy(); 1531 1532 synchronized(this) { 1533 mSystemReady = true; 1534 if (mInitialBroadcast != null) { 1535 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1536 mInitialBroadcast = null; 1537 } 1538 } 1539 // load the global proxy at startup 1540 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1541 1542 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1543 // for user to unlock device. 1544 if (!updateLockdownVpn()) { 1545 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1546 mContext.registerReceiver(mUserPresentReceiver, filter); 1547 } 1548 1549 // Configure whether mobile data is always on. 1550 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1551 1552 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1553 1554 mPermissionMonitor.startMonitoring(); 1555 } 1556 1557 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1558 @Override 1559 public void onReceive(Context context, Intent intent) { 1560 // Try creating lockdown tracker, since user present usually means 1561 // unlocked keystore. 1562 if (updateLockdownVpn()) { 1563 mContext.unregisterReceiver(this); 1564 } 1565 } 1566 }; 1567 1568 /** @hide */ 1569 @Override 1570 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1571 enforceConnectivityInternalPermission(); 1572 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1573// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1574 } 1575 1576 /** 1577 * Setup data activity tracking for the given network. 1578 * 1579 * Every {@code setupDataActivityTracking} should be paired with a 1580 * {@link #removeDataActivityTracking} for cleanup. 1581 */ 1582 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1583 final String iface = networkAgent.linkProperties.getInterfaceName(); 1584 1585 final int timeout; 1586 int type = ConnectivityManager.TYPE_NONE; 1587 1588 if (networkAgent.networkCapabilities.hasTransport( 1589 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1590 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1591 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1592 5); 1593 type = ConnectivityManager.TYPE_MOBILE; 1594 } else if (networkAgent.networkCapabilities.hasTransport( 1595 NetworkCapabilities.TRANSPORT_WIFI)) { 1596 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1597 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1598 5); 1599 type = ConnectivityManager.TYPE_WIFI; 1600 } else { 1601 // do not track any other networks 1602 timeout = 0; 1603 } 1604 1605 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1606 try { 1607 mNetd.addIdleTimer(iface, timeout, type); 1608 } catch (Exception e) { 1609 // You shall not crash! 1610 loge("Exception in setupDataActivityTracking " + e); 1611 } 1612 } 1613 } 1614 1615 /** 1616 * Remove data activity tracking when network disconnects. 1617 */ 1618 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1619 final String iface = networkAgent.linkProperties.getInterfaceName(); 1620 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1621 1622 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1623 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1624 try { 1625 // the call fails silently if no idletimer setup for this interface 1626 mNetd.removeIdleTimer(iface); 1627 } catch (Exception e) { 1628 loge("Exception in removeDataActivityTracking " + e); 1629 } 1630 } 1631 } 1632 1633 /** 1634 * Reads the network specific MTU size from reources. 1635 * and set it on it's iface. 1636 */ 1637 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1638 final String iface = newLp.getInterfaceName(); 1639 final int mtu = newLp.getMtu(); 1640 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1641 if (VDBG) log("identical MTU - not setting"); 1642 return; 1643 } 1644 1645 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1646 loge("Unexpected mtu value: " + mtu + ", " + iface); 1647 return; 1648 } 1649 1650 // Cannot set MTU without interface name 1651 if (TextUtils.isEmpty(iface)) { 1652 loge("Setting MTU size with null iface."); 1653 return; 1654 } 1655 1656 try { 1657 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1658 mNetd.setMtu(iface, mtu); 1659 } catch (Exception e) { 1660 Slog.e(TAG, "exception in setMtu()" + e); 1661 } 1662 } 1663 1664 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1665 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1666 1667 // Overridden for testing purposes to avoid writing to SystemProperties. 1668 protected int getDefaultTcpRwnd() { 1669 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1670 } 1671 1672 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1673 if (isDefaultNetwork(nai) == false) { 1674 return; 1675 } 1676 1677 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1678 String[] values = null; 1679 if (tcpBufferSizes != null) { 1680 values = tcpBufferSizes.split(","); 1681 } 1682 1683 if (values == null || values.length != 6) { 1684 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1685 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1686 values = tcpBufferSizes.split(","); 1687 } 1688 1689 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1690 1691 try { 1692 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1693 1694 final String prefix = "/sys/kernel/ipv4/tcp_"; 1695 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1696 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1697 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1698 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1699 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1700 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1701 mCurrentTcpBufferSizes = tcpBufferSizes; 1702 } catch (IOException e) { 1703 loge("Can't set TCP buffer sizes:" + e); 1704 } 1705 1706 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1707 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1708 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1709 if (rwndValue != 0) { 1710 SystemProperties.set(sysctlKey, rwndValue.toString()); 1711 } 1712 } 1713 1714 private void flushVmDnsCache() { 1715 /* 1716 * Tell the VMs to toss their DNS caches 1717 */ 1718 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1719 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1720 /* 1721 * Connectivity events can happen before boot has completed ... 1722 */ 1723 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1724 final long ident = Binder.clearCallingIdentity(); 1725 try { 1726 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1727 } finally { 1728 Binder.restoreCallingIdentity(ident); 1729 } 1730 } 1731 1732 @Override 1733 public int getRestoreDefaultNetworkDelay(int networkType) { 1734 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1735 NETWORK_RESTORE_DELAY_PROP_NAME); 1736 if(restoreDefaultNetworkDelayStr != null && 1737 restoreDefaultNetworkDelayStr.length() != 0) { 1738 try { 1739 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1740 } catch (NumberFormatException e) { 1741 } 1742 } 1743 // if the system property isn't set, use the value for the apn type 1744 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1745 1746 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1747 (mNetConfigs[networkType] != null)) { 1748 ret = mNetConfigs[networkType].restoreTime; 1749 } 1750 return ret; 1751 } 1752 1753 private boolean shouldPerformDiagnostics(String[] args) { 1754 for (String arg : args) { 1755 if (arg.equals("--diag")) { 1756 return true; 1757 } 1758 } 1759 return false; 1760 } 1761 1762 @Override 1763 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1764 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1765 if (mContext.checkCallingOrSelfPermission( 1766 android.Manifest.permission.DUMP) 1767 != PackageManager.PERMISSION_GRANTED) { 1768 pw.println("Permission Denial: can't dump ConnectivityService " + 1769 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1770 Binder.getCallingUid()); 1771 return; 1772 } 1773 1774 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1775 if (shouldPerformDiagnostics(args)) { 1776 final long DIAG_TIME_MS = 5000; 1777 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1778 // Start gathering diagnostic information. 1779 netDiags.add(new NetworkDiagnostics( 1780 nai.network, 1781 new LinkProperties(nai.linkProperties), 1782 DIAG_TIME_MS)); 1783 } 1784 1785 for (NetworkDiagnostics netDiag : netDiags) { 1786 pw.println(); 1787 netDiag.waitForMeasurements(); 1788 netDiag.dump(pw); 1789 } 1790 1791 return; 1792 } 1793 1794 pw.print("NetworkFactories for:"); 1795 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1796 pw.print(" " + nfi.name); 1797 } 1798 pw.println(); 1799 pw.println(); 1800 1801 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1802 pw.print("Active default network: "); 1803 if (defaultNai == null) { 1804 pw.println("none"); 1805 } else { 1806 pw.println(defaultNai.network.netId); 1807 } 1808 pw.println(); 1809 1810 pw.println("Current Networks:"); 1811 pw.increaseIndent(); 1812 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1813 pw.println(nai.toString()); 1814 pw.increaseIndent(); 1815 pw.println("Requests:"); 1816 pw.increaseIndent(); 1817 for (int i = 0; i < nai.networkRequests.size(); i++) { 1818 pw.println(nai.networkRequests.valueAt(i).toString()); 1819 } 1820 pw.decreaseIndent(); 1821 pw.println("Lingered:"); 1822 pw.increaseIndent(); 1823 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1824 pw.decreaseIndent(); 1825 pw.decreaseIndent(); 1826 } 1827 pw.decreaseIndent(); 1828 pw.println(); 1829 1830 pw.println("Network Requests:"); 1831 pw.increaseIndent(); 1832 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1833 pw.println(nri.toString()); 1834 } 1835 pw.println(); 1836 pw.decreaseIndent(); 1837 1838 mLegacyTypeTracker.dump(pw); 1839 1840 synchronized (this) { 1841 pw.print("mNetTransitionWakeLock: currently " + 1842 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1843 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1844 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1845 } else { 1846 pw.println(", last requested never"); 1847 } 1848 } 1849 pw.println(); 1850 1851 mTethering.dump(fd, pw, args); 1852 1853 if (mInetLog != null && mInetLog.size() > 0) { 1854 pw.println(); 1855 pw.println("Inet condition reports:"); 1856 pw.increaseIndent(); 1857 for(int i = 0; i < mInetLog.size(); i++) { 1858 pw.println(mInetLog.get(i)); 1859 } 1860 pw.decreaseIndent(); 1861 } 1862 } 1863 1864 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1865 if (nai.network == null) return false; 1866 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1867 if (officialNai != null && officialNai.equals(nai)) return true; 1868 if (officialNai != null || VDBG) { 1869 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1870 " - " + nai); 1871 } 1872 return false; 1873 } 1874 1875 private boolean isRequest(NetworkRequest request) { 1876 return mNetworkRequests.get(request).isRequest; 1877 } 1878 1879 // must be stateless - things change under us. 1880 private class NetworkStateTrackerHandler extends Handler { 1881 public NetworkStateTrackerHandler(Looper looper) { 1882 super(looper); 1883 } 1884 1885 @Override 1886 public void handleMessage(Message msg) { 1887 NetworkInfo info; 1888 switch (msg.what) { 1889 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1890 handleAsyncChannelHalfConnect(msg); 1891 break; 1892 } 1893 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1894 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1895 if (nai != null) nai.asyncChannel.disconnect(); 1896 break; 1897 } 1898 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1899 handleAsyncChannelDisconnected(msg); 1900 break; 1901 } 1902 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1903 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1904 if (nai == null) { 1905 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1906 } else { 1907 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1908 } 1909 break; 1910 } 1911 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1912 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1913 if (nai == null) { 1914 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1915 } else { 1916 if (VDBG) { 1917 log("Update of LinkProperties for " + nai.name() + 1918 "; created=" + nai.created); 1919 } 1920 LinkProperties oldLp = nai.linkProperties; 1921 synchronized (nai) { 1922 nai.linkProperties = (LinkProperties)msg.obj; 1923 } 1924 if (nai.created) updateLinkProperties(nai, oldLp); 1925 } 1926 break; 1927 } 1928 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1929 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1930 if (nai == null) { 1931 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1932 break; 1933 } 1934 info = (NetworkInfo) msg.obj; 1935 updateNetworkInfo(nai, info); 1936 break; 1937 } 1938 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1939 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1940 if (nai == null) { 1941 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1942 break; 1943 } 1944 Integer score = (Integer) msg.obj; 1945 if (score != null) updateNetworkScore(nai, score.intValue()); 1946 break; 1947 } 1948 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1949 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1950 if (nai == null) { 1951 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1952 break; 1953 } 1954 try { 1955 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1956 } catch (Exception e) { 1957 // Never crash! 1958 loge("Exception in addVpnUidRanges: " + e); 1959 } 1960 break; 1961 } 1962 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1963 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1964 if (nai == null) { 1965 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1966 break; 1967 } 1968 try { 1969 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1970 } catch (Exception e) { 1971 // Never crash! 1972 loge("Exception in removeVpnUidRanges: " + e); 1973 } 1974 break; 1975 } 1976 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1977 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1978 if (nai == null) { 1979 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1980 break; 1981 } 1982 if (nai.created && !nai.networkMisc.explicitlySelected) { 1983 loge("ERROR: created network explicitly selected."); 1984 } 1985 nai.networkMisc.explicitlySelected = true; 1986 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 1987 break; 1988 } 1989 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1990 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1991 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_TESTED")) { 1992 final boolean valid = 1993 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1994 final boolean validationChanged = (valid != nai.lastValidated); 1995 nai.lastValidated = valid; 1996 if (valid) { 1997 if (DBG) log("Validated " + nai.name()); 1998 nai.networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 1999 if (!nai.everValidated) { 2000 nai.everValidated = true; 2001 rematchNetworkAndRequests(nai, NascentState.JUST_VALIDATED, 2002 ReapUnvalidatedNetworks.REAP); 2003 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2004 sendUpdatedScoreToFactories(nai); 2005 } 2006 } else { 2007 nai.networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 2008 } 2009 updateInetCondition(nai); 2010 // Let the NetworkAgent know the state of its network 2011 nai.asyncChannel.sendMessage( 2012 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2013 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2014 0, null); 2015 2016 if (validationChanged) { 2017 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 2018 } 2019 } 2020 break; 2021 } 2022 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2023 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2024 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 2025 handleLingerComplete(nai); 2026 } 2027 break; 2028 } 2029 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2030 if (msg.arg1 == 0) { 2031 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 2032 } else { 2033 final NetworkAgentInfo nai; 2034 synchronized (mNetworkForNetId) { 2035 nai = mNetworkForNetId.get(msg.arg2); 2036 } 2037 if (nai == null) { 2038 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2039 break; 2040 } 2041 nai.captivePortalDetected = true; 2042 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 2043 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 2044 } 2045 break; 2046 } 2047 } 2048 } 2049 } 2050 2051 // Cancel any lingering so the linger timeout doesn't teardown a network. 2052 // This should be called when a network begins satisfying a NetworkRequest. 2053 // Note: depending on what state the NetworkMonitor is in (e.g., 2054 // if it's awaiting captive portal login, or if validation failed), this 2055 // may trigger a re-evaluation of the network. 2056 private void unlinger(NetworkAgentInfo nai) { 2057 if (VDBG) log("Canceling linger of " + nai.name()); 2058 // If network has never been validated, it cannot have been lingered, so don't bother 2059 // needlessly triggering a re-evaluation. 2060 if (!nai.everValidated) return; 2061 nai.networkLingered.clear(); 2062 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2063 } 2064 2065 private void handleAsyncChannelHalfConnect(Message msg) { 2066 AsyncChannel ac = (AsyncChannel) msg.obj; 2067 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2068 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2069 if (VDBG) log("NetworkFactory connected"); 2070 // A network factory has connected. Send it all current NetworkRequests. 2071 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2072 if (nri.isRequest == false) continue; 2073 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2074 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2075 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2076 } 2077 } else { 2078 loge("Error connecting NetworkFactory"); 2079 mNetworkFactoryInfos.remove(msg.obj); 2080 } 2081 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2082 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2083 if (VDBG) log("NetworkAgent connected"); 2084 // A network agent has requested a connection. Establish the connection. 2085 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2086 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2087 } else { 2088 loge("Error connecting NetworkAgent"); 2089 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2090 if (nai != null) { 2091 final boolean wasDefault = isDefaultNetwork(nai); 2092 synchronized (mNetworkForNetId) { 2093 mNetworkForNetId.remove(nai.network.netId); 2094 mNetIdInUse.delete(nai.network.netId); 2095 } 2096 // Just in case. 2097 mLegacyTypeTracker.remove(nai, wasDefault); 2098 } 2099 } 2100 } 2101 } 2102 2103 private void handleAsyncChannelDisconnected(Message msg) { 2104 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2105 if (nai != null) { 2106 if (DBG) { 2107 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2108 } 2109 // A network agent has disconnected. 2110 if (nai.created) { 2111 // Tell netd to clean up the configuration for this network 2112 // (routing rules, DNS, etc). 2113 try { 2114 mNetd.removeNetwork(nai.network.netId); 2115 } catch (Exception e) { 2116 loge("Exception removing network: " + e); 2117 } 2118 } 2119 // TODO - if we move the logic to the network agent (have them disconnect 2120 // because they lost all their requests or because their score isn't good) 2121 // then they would disconnect organically, report their new state and then 2122 // disconnect the channel. 2123 if (nai.networkInfo.isConnected()) { 2124 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2125 null, null); 2126 } 2127 final boolean wasDefault = isDefaultNetwork(nai); 2128 if (wasDefault) { 2129 mDefaultInetConditionPublished = 0; 2130 } 2131 notifyIfacesChanged(); 2132 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2133 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2134 mNetworkAgentInfos.remove(msg.replyTo); 2135 updateClat(null, nai.linkProperties, nai); 2136 synchronized (mNetworkForNetId) { 2137 mNetworkForNetId.remove(nai.network.netId); 2138 mNetIdInUse.delete(nai.network.netId); 2139 } 2140 // Since we've lost the network, go through all the requests that 2141 // it was satisfying and see if any other factory can satisfy them. 2142 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2143 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2144 for (int i = 0; i < nai.networkRequests.size(); i++) { 2145 NetworkRequest request = nai.networkRequests.valueAt(i); 2146 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2147 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2148 if (DBG) { 2149 log("Checking for replacement network to handle request " + request ); 2150 } 2151 mNetworkForRequestId.remove(request.requestId); 2152 sendUpdatedScoreToFactories(request, 0); 2153 NetworkAgentInfo alternative = null; 2154 for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) { 2155 if (existing.satisfies(request) && 2156 (alternative == null || 2157 alternative.getCurrentScore() < existing.getCurrentScore())) { 2158 alternative = existing; 2159 } 2160 } 2161 if (alternative != null) { 2162 if (DBG) log(" found replacement in " + alternative.name()); 2163 if (!toActivate.contains(alternative)) { 2164 toActivate.add(alternative); 2165 } 2166 } 2167 } 2168 } 2169 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2170 removeDataActivityTracking(nai); 2171 notifyLockdownVpn(nai); 2172 requestNetworkTransitionWakelock(nai.name()); 2173 } 2174 mLegacyTypeTracker.remove(nai, wasDefault); 2175 for (NetworkAgentInfo networkToActivate : toActivate) { 2176 unlinger(networkToActivate); 2177 rematchNetworkAndRequests(networkToActivate, NascentState.NOT_JUST_VALIDATED, 2178 ReapUnvalidatedNetworks.DONT_REAP); 2179 } 2180 } 2181 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2182 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2183 } 2184 2185 // If this method proves to be too slow then we can maintain a separate 2186 // pendingIntent => NetworkRequestInfo map. 2187 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2188 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2189 Intent intent = pendingIntent.getIntent(); 2190 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2191 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2192 if (existingPendingIntent != null && 2193 existingPendingIntent.getIntent().filterEquals(intent)) { 2194 return entry.getValue(); 2195 } 2196 } 2197 return null; 2198 } 2199 2200 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2201 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2202 2203 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2204 if (existingRequest != null) { // remove the existing request. 2205 if (DBG) log("Replacing " + existingRequest.request + " with " 2206 + nri.request + " because their intents matched."); 2207 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2208 } 2209 handleRegisterNetworkRequest(nri); 2210 } 2211 2212 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2213 mNetworkRequests.put(nri.request, nri); 2214 2215 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2216 2217 // Check for the best currently alive network that satisfies this request 2218 NetworkAgentInfo bestNetwork = null; 2219 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2220 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2221 if (network.satisfies(nri.request)) { 2222 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2223 if (!nri.isRequest) { 2224 // Not setting bestNetwork here as a listening NetworkRequest may be 2225 // satisfied by multiple Networks. Instead the request is added to 2226 // each satisfying Network and notified about each. 2227 network.addRequest(nri.request); 2228 notifyNetworkCallback(network, nri); 2229 } else if (bestNetwork == null || 2230 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2231 bestNetwork = network; 2232 } 2233 } 2234 } 2235 if (bestNetwork != null) { 2236 if (DBG) log("using " + bestNetwork.name()); 2237 unlinger(bestNetwork); 2238 bestNetwork.addRequest(nri.request); 2239 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2240 notifyNetworkCallback(bestNetwork, nri); 2241 if (nri.request.legacyType != TYPE_NONE) { 2242 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2243 } 2244 } 2245 2246 if (nri.isRequest) { 2247 if (DBG) log("sending new NetworkRequest to factories"); 2248 final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore(); 2249 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2250 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2251 0, nri.request); 2252 } 2253 } 2254 } 2255 2256 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2257 int callingUid) { 2258 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2259 if (nri != null) { 2260 handleReleaseNetworkRequest(nri.request, callingUid); 2261 } 2262 } 2263 2264 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2265 // For validated Networks this is simply whether it is satsifying any NetworkRequests. 2266 // For unvalidated Networks this is whether it is satsifying any NetworkRequests or 2267 // were it to become validated, would it have a chance of satisfying any NetworkRequests. 2268 private boolean unneeded(NetworkAgentInfo nai) { 2269 if (!nai.created || nai.isVPN()) return false; 2270 boolean unneeded = true; 2271 if (nai.everValidated) { 2272 for (int i = 0; i < nai.networkRequests.size() && unneeded; i++) { 2273 final NetworkRequest nr = nai.networkRequests.valueAt(i); 2274 try { 2275 if (isRequest(nr)) unneeded = false; 2276 } catch (Exception e) { 2277 loge("Request " + nr + " not found in mNetworkRequests."); 2278 loge(" it came from request list of " + nai.name()); 2279 } 2280 } 2281 } else { 2282 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2283 // If this Network is already the highest scoring Network for a request, or if 2284 // there is hope for it to become one if it validated, then it is needed. 2285 if (nri.isRequest && nai.satisfies(nri.request) && 2286 (nai.networkRequests.get(nri.request.requestId) != null || 2287 // Note that this catches two important cases: 2288 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2289 // is currently satisfying the request. This is desirable when 2290 // cellular ends up validating but WiFi does not. 2291 // 2. Unvalidated WiFi will not be reaped when validated cellular 2292 // is currently satsifying the request. This is desirable when 2293 // WiFi ends up validating and out scoring cellular. 2294 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2295 nai.getCurrentScoreAsValidated())) { 2296 unneeded = false; 2297 break; 2298 } 2299 } 2300 } 2301 return unneeded; 2302 } 2303 2304 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2305 NetworkRequestInfo nri = mNetworkRequests.get(request); 2306 if (nri != null) { 2307 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2308 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2309 return; 2310 } 2311 if (DBG) log("releasing NetworkRequest " + request); 2312 nri.unlinkDeathRecipient(); 2313 mNetworkRequests.remove(request); 2314 if (nri.isRequest) { 2315 // Find all networks that are satisfying this request and remove the request 2316 // from their request lists. 2317 // TODO - it's my understanding that for a request there is only a single 2318 // network satisfying it, so this loop is wasteful 2319 boolean wasKept = false; 2320 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2321 if (nai.networkRequests.get(nri.request.requestId) != null) { 2322 nai.networkRequests.remove(nri.request.requestId); 2323 if (DBG) { 2324 log(" Removing from current network " + nai.name() + 2325 ", leaving " + nai.networkRequests.size() + 2326 " requests."); 2327 } 2328 if (unneeded(nai)) { 2329 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2330 teardownUnneededNetwork(nai); 2331 } else { 2332 // suspect there should only be one pass through here 2333 // but if any were kept do the check below 2334 wasKept |= true; 2335 } 2336 } 2337 } 2338 2339 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2340 if (nai != null) { 2341 mNetworkForRequestId.remove(nri.request.requestId); 2342 } 2343 // Maintain the illusion. When this request arrived, we might have pretended 2344 // that a network connected to serve it, even though the network was already 2345 // connected. Now that this request has gone away, we might have to pretend 2346 // that the network disconnected. LegacyTypeTracker will generate that 2347 // phantom disconnect for this type. 2348 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2349 boolean doRemove = true; 2350 if (wasKept) { 2351 // check if any of the remaining requests for this network are for the 2352 // same legacy type - if so, don't remove the nai 2353 for (int i = 0; i < nai.networkRequests.size(); i++) { 2354 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2355 if (otherRequest.legacyType == nri.request.legacyType && 2356 isRequest(otherRequest)) { 2357 if (DBG) log(" still have other legacy request - leaving"); 2358 doRemove = false; 2359 } 2360 } 2361 } 2362 2363 if (doRemove) { 2364 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2365 } 2366 } 2367 2368 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2369 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2370 nri.request); 2371 } 2372 } else { 2373 // listens don't have a singular affectedNetwork. Check all networks to see 2374 // if this listen request applies and remove it. 2375 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2376 nai.networkRequests.remove(nri.request.requestId); 2377 } 2378 } 2379 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2380 } 2381 } 2382 2383 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2384 enforceConnectivityInternalPermission(); 2385 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2386 accept ? 1 : 0, always ? 1: 0, network)); 2387 } 2388 2389 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2390 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2391 " accept=" + accept + " always=" + always); 2392 2393 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2394 if (nai == null) { 2395 // Nothing to do. 2396 return; 2397 } 2398 2399 if (nai.everValidated) { 2400 // The network validated while the dialog box was up. Don't make any changes. There's a 2401 // TODO in the dialog code to make it go away if the network validates; once that's 2402 // implemented, taking action here will be confusing. 2403 return; 2404 } 2405 2406 if (!nai.networkMisc.explicitlySelected) { 2407 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2408 } 2409 2410 if (accept != nai.networkMisc.acceptUnvalidated) { 2411 int oldScore = nai.getCurrentScore(); 2412 nai.networkMisc.acceptUnvalidated = accept; 2413 rematchAllNetworksAndRequests(nai, oldScore); 2414 sendUpdatedScoreToFactories(nai); 2415 } 2416 2417 if (always) { 2418 nai.asyncChannel.sendMessage( 2419 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2420 } 2421 2422 // TODO: should we also disconnect from the network if accept is false? 2423 } 2424 2425 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2426 mHandler.sendMessageDelayed( 2427 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2428 PROMPT_UNVALIDATED_DELAY_MS); 2429 } 2430 2431 private void handlePromptUnvalidated(Network network) { 2432 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2433 2434 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2435 // we haven't already been told to switch to it regardless of whether it validated or not. 2436 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2437 if (nai == null || nai.everValidated || nai.captivePortalDetected || 2438 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2439 return; 2440 } 2441 2442 // TODO: What should we do if we've already switched to this network because we had no 2443 // better option? There are two obvious alternatives. 2444 // 2445 // 1. Decide that there's no point prompting because this is our only usable network. 2446 // However, because we didn't prompt, if later on a validated network comes along, we'll 2447 // either a) silently switch to it - bad if the user wanted to connect to stay on this 2448 // unvalidated network - or b) prompt the user at that later time - bad because the user 2449 // might not understand why they are now being prompted. 2450 // 2451 // 2. Always prompt the user, even if we have no other network to use. The user could then 2452 // try to find an alternative network to join (remember, if we got here, then the user 2453 // selected this network manually). This is bad because the prompt isn't really very 2454 // useful. 2455 // 2456 // For now we do #1, but we can revisit that later. 2457 if (isDefaultNetwork(nai)) { 2458 return; 2459 } 2460 2461 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2462 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, network); 2463 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2464 intent.setClassName("com.android.settings", 2465 "com.android.settings.wifi.WifiNoInternetDialog"); 2466 mContext.startActivityAsUser(intent, UserHandle.CURRENT); 2467 } 2468 2469 private class InternalHandler extends Handler { 2470 public InternalHandler(Looper looper) { 2471 super(looper); 2472 } 2473 2474 @Override 2475 public void handleMessage(Message msg) { 2476 switch (msg.what) { 2477 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2478 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2479 String causedBy = null; 2480 synchronized (ConnectivityService.this) { 2481 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2482 mNetTransitionWakeLock.isHeld()) { 2483 mNetTransitionWakeLock.release(); 2484 causedBy = mNetTransitionWakeLockCausedBy; 2485 } else { 2486 break; 2487 } 2488 } 2489 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2490 log("Failed to find a new network - expiring NetTransition Wakelock"); 2491 } else { 2492 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2493 " cleared because we found a replacement network"); 2494 } 2495 break; 2496 } 2497 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2498 handleDeprecatedGlobalHttpProxy(); 2499 break; 2500 } 2501 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2502 Intent intent = (Intent)msg.obj; 2503 sendStickyBroadcast(intent); 2504 break; 2505 } 2506 case EVENT_PROXY_HAS_CHANGED: { 2507 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2508 break; 2509 } 2510 case EVENT_REGISTER_NETWORK_FACTORY: { 2511 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2512 break; 2513 } 2514 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2515 handleUnregisterNetworkFactory((Messenger)msg.obj); 2516 break; 2517 } 2518 case EVENT_REGISTER_NETWORK_AGENT: { 2519 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2520 break; 2521 } 2522 case EVENT_REGISTER_NETWORK_REQUEST: 2523 case EVENT_REGISTER_NETWORK_LISTENER: { 2524 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2525 break; 2526 } 2527 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: { 2528 handleRegisterNetworkRequestWithIntent(msg); 2529 break; 2530 } 2531 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2532 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2533 break; 2534 } 2535 case EVENT_RELEASE_NETWORK_REQUEST: { 2536 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2537 break; 2538 } 2539 case EVENT_SET_ACCEPT_UNVALIDATED: { 2540 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2541 break; 2542 } 2543 case EVENT_PROMPT_UNVALIDATED: { 2544 handlePromptUnvalidated((Network) msg.obj); 2545 break; 2546 } 2547 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2548 handleMobileDataAlwaysOn(); 2549 break; 2550 } 2551 case EVENT_SYSTEM_READY: { 2552 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2553 nai.networkMonitor.systemReady = true; 2554 } 2555 break; 2556 } 2557 } 2558 } 2559 } 2560 2561 // javadoc from interface 2562 public int tether(String iface) { 2563 ConnectivityManager.enforceTetherChangePermission(mContext); 2564 if (isTetheringSupported()) { 2565 return mTethering.tether(iface); 2566 } else { 2567 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2568 } 2569 } 2570 2571 // javadoc from interface 2572 public int untether(String iface) { 2573 ConnectivityManager.enforceTetherChangePermission(mContext); 2574 2575 if (isTetheringSupported()) { 2576 return mTethering.untether(iface); 2577 } else { 2578 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2579 } 2580 } 2581 2582 // javadoc from interface 2583 public int getLastTetherError(String iface) { 2584 enforceTetherAccessPermission(); 2585 2586 if (isTetheringSupported()) { 2587 return mTethering.getLastTetherError(iface); 2588 } else { 2589 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2590 } 2591 } 2592 2593 // TODO - proper iface API for selection by property, inspection, etc 2594 public String[] getTetherableUsbRegexs() { 2595 enforceTetherAccessPermission(); 2596 if (isTetheringSupported()) { 2597 return mTethering.getTetherableUsbRegexs(); 2598 } else { 2599 return new String[0]; 2600 } 2601 } 2602 2603 public String[] getTetherableWifiRegexs() { 2604 enforceTetherAccessPermission(); 2605 if (isTetheringSupported()) { 2606 return mTethering.getTetherableWifiRegexs(); 2607 } else { 2608 return new String[0]; 2609 } 2610 } 2611 2612 public String[] getTetherableBluetoothRegexs() { 2613 enforceTetherAccessPermission(); 2614 if (isTetheringSupported()) { 2615 return mTethering.getTetherableBluetoothRegexs(); 2616 } else { 2617 return new String[0]; 2618 } 2619 } 2620 2621 public int setUsbTethering(boolean enable) { 2622 ConnectivityManager.enforceTetherChangePermission(mContext); 2623 if (isTetheringSupported()) { 2624 return mTethering.setUsbTethering(enable); 2625 } else { 2626 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2627 } 2628 } 2629 2630 // TODO - move iface listing, queries, etc to new module 2631 // javadoc from interface 2632 public String[] getTetherableIfaces() { 2633 enforceTetherAccessPermission(); 2634 return mTethering.getTetherableIfaces(); 2635 } 2636 2637 public String[] getTetheredIfaces() { 2638 enforceTetherAccessPermission(); 2639 return mTethering.getTetheredIfaces(); 2640 } 2641 2642 public String[] getTetheringErroredIfaces() { 2643 enforceTetherAccessPermission(); 2644 return mTethering.getErroredIfaces(); 2645 } 2646 2647 public String[] getTetheredDhcpRanges() { 2648 enforceConnectivityInternalPermission(); 2649 return mTethering.getTetheredDhcpRanges(); 2650 } 2651 2652 // if ro.tether.denied = true we default to no tethering 2653 // gservices could set the secure setting to 1 though to enable it on a build where it 2654 // had previously been turned off. 2655 public boolean isTetheringSupported() { 2656 enforceTetherAccessPermission(); 2657 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2658 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2659 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2660 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2661 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2662 mTethering.getTetherableWifiRegexs().length != 0 || 2663 mTethering.getTetherableBluetoothRegexs().length != 0) && 2664 mTethering.getUpstreamIfaceTypes().length != 0); 2665 } 2666 2667 // Called when we lose the default network and have no replacement yet. 2668 // This will automatically be cleared after X seconds or a new default network 2669 // becomes CONNECTED, whichever happens first. The timer is started by the 2670 // first caller and not restarted by subsequent callers. 2671 private void requestNetworkTransitionWakelock(String forWhom) { 2672 int serialNum = 0; 2673 synchronized (this) { 2674 if (mNetTransitionWakeLock.isHeld()) return; 2675 serialNum = ++mNetTransitionWakeLockSerialNumber; 2676 mNetTransitionWakeLock.acquire(); 2677 mNetTransitionWakeLockCausedBy = forWhom; 2678 } 2679 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2680 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2681 mNetTransitionWakeLockTimeout); 2682 return; 2683 } 2684 2685 // 100 percent is full good, 0 is full bad. 2686 public void reportInetCondition(int networkType, int percentage) { 2687 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2688 if (nai == null) return; 2689 reportNetworkConnectivity(nai.network, percentage > 50); 2690 } 2691 2692 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2693 enforceAccessPermission(); 2694 enforceInternetPermission(); 2695 2696 NetworkAgentInfo nai; 2697 if (network == null) { 2698 nai = getDefaultNetwork(); 2699 } else { 2700 nai = getNetworkAgentInfoForNetwork(network); 2701 } 2702 if (nai == null) return; 2703 // Revalidate if the app report does not match our current validated state. 2704 if (hasConnectivity == nai.lastValidated) return; 2705 final int uid = Binder.getCallingUid(); 2706 if (DBG) { 2707 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2708 ") by " + uid); 2709 } 2710 synchronized (nai) { 2711 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2712 // which isn't meant to work on uncreated networks. 2713 if (!nai.created) return; 2714 2715 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2716 2717 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2718 } 2719 } 2720 2721 public void captivePortalAppResponse(Network network, int response, String actionToken) { 2722 if (response == ConnectivityManager.CAPTIVE_PORTAL_APP_RETURN_WANTED_AS_IS) { 2723 enforceConnectivityInternalPermission(); 2724 } 2725 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2726 if (nai == null) return; 2727 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_CAPTIVE_PORTAL_APP_FINISHED, response, 0, 2728 actionToken); 2729 } 2730 2731 private ProxyInfo getDefaultProxy() { 2732 // this information is already available as a world read/writable jvm property 2733 // so this API change wouldn't have a benifit. It also breaks the passing 2734 // of proxy info to all the JVMs. 2735 // enforceAccessPermission(); 2736 synchronized (mProxyLock) { 2737 ProxyInfo ret = mGlobalProxy; 2738 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2739 return ret; 2740 } 2741 } 2742 2743 public ProxyInfo getProxyForNetwork(Network network) { 2744 if (network == null) return getDefaultProxy(); 2745 final ProxyInfo globalProxy = getGlobalProxy(); 2746 if (globalProxy != null) return globalProxy; 2747 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2748 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2749 // caller may not have. 2750 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2751 if (nai == null) return null; 2752 synchronized (nai) { 2753 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2754 if (proxyInfo == null) return null; 2755 return new ProxyInfo(proxyInfo); 2756 } 2757 } 2758 2759 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2760 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2761 // proxy is null then there is no proxy in place). 2762 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2763 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2764 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2765 proxy = null; 2766 } 2767 return proxy; 2768 } 2769 2770 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2771 // better for determining if a new proxy broadcast is necessary: 2772 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2773 // avoid unnecessary broadcasts. 2774 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2775 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2776 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2777 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2778 // all set. 2779 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2780 a = canonicalizeProxyInfo(a); 2781 b = canonicalizeProxyInfo(b); 2782 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2783 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2784 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2785 } 2786 2787 public void setGlobalProxy(ProxyInfo proxyProperties) { 2788 enforceConnectivityInternalPermission(); 2789 2790 synchronized (mProxyLock) { 2791 if (proxyProperties == mGlobalProxy) return; 2792 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2793 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2794 2795 String host = ""; 2796 int port = 0; 2797 String exclList = ""; 2798 String pacFileUrl = ""; 2799 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2800 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2801 if (!proxyProperties.isValid()) { 2802 if (DBG) 2803 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2804 return; 2805 } 2806 mGlobalProxy = new ProxyInfo(proxyProperties); 2807 host = mGlobalProxy.getHost(); 2808 port = mGlobalProxy.getPort(); 2809 exclList = mGlobalProxy.getExclusionListAsString(); 2810 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2811 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2812 } 2813 } else { 2814 mGlobalProxy = null; 2815 } 2816 ContentResolver res = mContext.getContentResolver(); 2817 final long token = Binder.clearCallingIdentity(); 2818 try { 2819 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2820 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2821 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2822 exclList); 2823 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2824 } finally { 2825 Binder.restoreCallingIdentity(token); 2826 } 2827 2828 if (mGlobalProxy == null) { 2829 proxyProperties = mDefaultProxy; 2830 } 2831 sendProxyBroadcast(proxyProperties); 2832 } 2833 } 2834 2835 private void loadGlobalProxy() { 2836 ContentResolver res = mContext.getContentResolver(); 2837 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2838 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2839 String exclList = Settings.Global.getString(res, 2840 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2841 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2842 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2843 ProxyInfo proxyProperties; 2844 if (!TextUtils.isEmpty(pacFileUrl)) { 2845 proxyProperties = new ProxyInfo(pacFileUrl); 2846 } else { 2847 proxyProperties = new ProxyInfo(host, port, exclList); 2848 } 2849 if (!proxyProperties.isValid()) { 2850 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2851 return; 2852 } 2853 2854 synchronized (mProxyLock) { 2855 mGlobalProxy = proxyProperties; 2856 } 2857 } 2858 } 2859 2860 public ProxyInfo getGlobalProxy() { 2861 // this information is already available as a world read/writable jvm property 2862 // so this API change wouldn't have a benifit. It also breaks the passing 2863 // of proxy info to all the JVMs. 2864 // enforceAccessPermission(); 2865 synchronized (mProxyLock) { 2866 return mGlobalProxy; 2867 } 2868 } 2869 2870 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2871 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2872 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2873 proxy = null; 2874 } 2875 synchronized (mProxyLock) { 2876 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2877 if (mDefaultProxy == proxy) return; // catches repeated nulls 2878 if (proxy != null && !proxy.isValid()) { 2879 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2880 return; 2881 } 2882 2883 // This call could be coming from the PacManager, containing the port of the local 2884 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2885 // global (to get the correct local port), and send a broadcast. 2886 // TODO: Switch PacManager to have its own message to send back rather than 2887 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2888 if ((mGlobalProxy != null) && (proxy != null) 2889 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2890 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2891 mGlobalProxy = proxy; 2892 sendProxyBroadcast(mGlobalProxy); 2893 return; 2894 } 2895 mDefaultProxy = proxy; 2896 2897 if (mGlobalProxy != null) return; 2898 if (!mDefaultProxyDisabled) { 2899 sendProxyBroadcast(proxy); 2900 } 2901 } 2902 } 2903 2904 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2905 // This method gets called when any network changes proxy, but the broadcast only ever contains 2906 // the default proxy (even if it hasn't changed). 2907 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2908 // world where an app might be bound to a non-default network. 2909 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2910 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2911 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2912 2913 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2914 sendProxyBroadcast(getDefaultProxy()); 2915 } 2916 } 2917 2918 private void handleDeprecatedGlobalHttpProxy() { 2919 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2920 Settings.Global.HTTP_PROXY); 2921 if (!TextUtils.isEmpty(proxy)) { 2922 String data[] = proxy.split(":"); 2923 if (data.length == 0) { 2924 return; 2925 } 2926 2927 String proxyHost = data[0]; 2928 int proxyPort = 8080; 2929 if (data.length > 1) { 2930 try { 2931 proxyPort = Integer.parseInt(data[1]); 2932 } catch (NumberFormatException e) { 2933 return; 2934 } 2935 } 2936 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2937 setGlobalProxy(p); 2938 } 2939 } 2940 2941 private void sendProxyBroadcast(ProxyInfo proxy) { 2942 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2943 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2944 if (DBG) log("sending Proxy Broadcast for " + proxy); 2945 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2946 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2947 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2948 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2949 final long ident = Binder.clearCallingIdentity(); 2950 try { 2951 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2952 } finally { 2953 Binder.restoreCallingIdentity(ident); 2954 } 2955 } 2956 2957 private static class SettingsObserver extends ContentObserver { 2958 final private HashMap<Uri, Integer> mUriEventMap; 2959 final private Context mContext; 2960 final private Handler mHandler; 2961 2962 SettingsObserver(Context context, Handler handler) { 2963 super(null); 2964 mUriEventMap = new HashMap<Uri, Integer>(); 2965 mContext = context; 2966 mHandler = handler; 2967 } 2968 2969 void observe(Uri uri, int what) { 2970 mUriEventMap.put(uri, what); 2971 final ContentResolver resolver = mContext.getContentResolver(); 2972 resolver.registerContentObserver(uri, false, this); 2973 } 2974 2975 @Override 2976 public void onChange(boolean selfChange) { 2977 Slog.wtf(TAG, "Should never be reached."); 2978 } 2979 2980 @Override 2981 public void onChange(boolean selfChange, Uri uri) { 2982 final Integer what = mUriEventMap.get(uri); 2983 if (what != null) { 2984 mHandler.obtainMessage(what.intValue()).sendToTarget(); 2985 } else { 2986 loge("No matching event to send for URI=" + uri); 2987 } 2988 } 2989 } 2990 2991 private static void log(String s) { 2992 Slog.d(TAG, s); 2993 } 2994 2995 private static void loge(String s) { 2996 Slog.e(TAG, s); 2997 } 2998 2999 private static <T> T checkNotNull(T value, String message) { 3000 if (value == null) { 3001 throw new NullPointerException(message); 3002 } 3003 return value; 3004 } 3005 3006 /** 3007 * Prepare for a VPN application. 3008 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3009 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3010 * 3011 * @param oldPackage Package name of the application which currently controls VPN, which will 3012 * be replaced. If there is no such application, this should should either be 3013 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3014 * @param newPackage Package name of the application which should gain control of VPN, or 3015 * {@code null} to disable. 3016 * @param userId User for whom to prepare the new VPN. 3017 * 3018 * @hide 3019 */ 3020 @Override 3021 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3022 int userId) { 3023 enforceCrossUserPermission(userId); 3024 throwIfLockdownEnabled(); 3025 3026 synchronized(mVpns) { 3027 return mVpns.get(userId).prepare(oldPackage, newPackage); 3028 } 3029 } 3030 3031 /** 3032 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3033 * This method is used by system-privileged apps. 3034 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3035 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3036 * 3037 * @param packageName The package for which authorization state should change. 3038 * @param userId User for whom {@code packageName} is installed. 3039 * @param authorized {@code true} if this app should be able to start a VPN connection without 3040 * explicit user approval, {@code false} if not. 3041 * 3042 * @hide 3043 */ 3044 @Override 3045 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3046 enforceCrossUserPermission(userId); 3047 3048 synchronized(mVpns) { 3049 mVpns.get(userId).setPackageAuthorization(packageName, authorized); 3050 } 3051 } 3052 3053 /** 3054 * Configure a TUN interface and return its file descriptor. Parameters 3055 * are encoded and opaque to this class. This method is used by VpnBuilder 3056 * and not available in ConnectivityManager. Permissions are checked in 3057 * Vpn class. 3058 * @hide 3059 */ 3060 @Override 3061 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3062 throwIfLockdownEnabled(); 3063 int user = UserHandle.getUserId(Binder.getCallingUid()); 3064 synchronized(mVpns) { 3065 return mVpns.get(user).establish(config); 3066 } 3067 } 3068 3069 /** 3070 * Start legacy VPN, controlling native daemons as needed. Creates a 3071 * secondary thread to perform connection work, returning quickly. 3072 */ 3073 @Override 3074 public void startLegacyVpn(VpnProfile profile) { 3075 throwIfLockdownEnabled(); 3076 final LinkProperties egress = getActiveLinkProperties(); 3077 if (egress == null) { 3078 throw new IllegalStateException("Missing active network connection"); 3079 } 3080 int user = UserHandle.getUserId(Binder.getCallingUid()); 3081 synchronized(mVpns) { 3082 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3083 } 3084 } 3085 3086 /** 3087 * Return the information of the ongoing legacy VPN. This method is used 3088 * by VpnSettings and not available in ConnectivityManager. Permissions 3089 * are checked in Vpn class. 3090 */ 3091 @Override 3092 public LegacyVpnInfo getLegacyVpnInfo() { 3093 throwIfLockdownEnabled(); 3094 int user = UserHandle.getUserId(Binder.getCallingUid()); 3095 synchronized(mVpns) { 3096 return mVpns.get(user).getLegacyVpnInfo(); 3097 } 3098 } 3099 3100 /** 3101 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3102 * and not available in ConnectivityManager. 3103 */ 3104 @Override 3105 public VpnInfo[] getAllVpnInfo() { 3106 enforceConnectivityInternalPermission(); 3107 if (mLockdownEnabled) { 3108 return new VpnInfo[0]; 3109 } 3110 3111 synchronized(mVpns) { 3112 List<VpnInfo> infoList = new ArrayList<>(); 3113 for (int i = 0; i < mVpns.size(); i++) { 3114 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3115 if (info != null) { 3116 infoList.add(info); 3117 } 3118 } 3119 return infoList.toArray(new VpnInfo[infoList.size()]); 3120 } 3121 } 3122 3123 /** 3124 * @return VPN information for accounting, or null if we can't retrieve all required 3125 * information, e.g primary underlying iface. 3126 */ 3127 @Nullable 3128 private VpnInfo createVpnInfo(Vpn vpn) { 3129 VpnInfo info = vpn.getVpnInfo(); 3130 if (info == null) { 3131 return null; 3132 } 3133 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3134 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3135 // the underlyingNetworks list. 3136 if (underlyingNetworks == null) { 3137 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3138 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3139 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3140 } 3141 } else if (underlyingNetworks.length > 0) { 3142 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3143 if (linkProperties != null) { 3144 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3145 } 3146 } 3147 return info.primaryUnderlyingIface == null ? null : info; 3148 } 3149 3150 /** 3151 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3152 * VpnDialogs and not available in ConnectivityManager. 3153 * Permissions are checked in Vpn class. 3154 * @hide 3155 */ 3156 @Override 3157 public VpnConfig getVpnConfig(int userId) { 3158 enforceCrossUserPermission(userId); 3159 synchronized(mVpns) { 3160 return mVpns.get(userId).getVpnConfig(); 3161 } 3162 } 3163 3164 @Override 3165 public boolean updateLockdownVpn() { 3166 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3167 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3168 return false; 3169 } 3170 3171 // Tear down existing lockdown if profile was removed 3172 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3173 if (mLockdownEnabled) { 3174 if (!mKeyStore.isUnlocked()) { 3175 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3176 return false; 3177 } 3178 3179 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3180 final VpnProfile profile = VpnProfile.decode( 3181 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3182 int user = UserHandle.getUserId(Binder.getCallingUid()); 3183 synchronized(mVpns) { 3184 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3185 profile)); 3186 } 3187 } else { 3188 setLockdownTracker(null); 3189 } 3190 3191 return true; 3192 } 3193 3194 /** 3195 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3196 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3197 */ 3198 private void setLockdownTracker(LockdownVpnTracker tracker) { 3199 // Shutdown any existing tracker 3200 final LockdownVpnTracker existing = mLockdownTracker; 3201 mLockdownTracker = null; 3202 if (existing != null) { 3203 existing.shutdown(); 3204 } 3205 3206 try { 3207 if (tracker != null) { 3208 mNetd.setFirewallEnabled(true); 3209 mNetd.setFirewallInterfaceRule("lo", true); 3210 mLockdownTracker = tracker; 3211 mLockdownTracker.init(); 3212 } else { 3213 mNetd.setFirewallEnabled(false); 3214 } 3215 } catch (RemoteException e) { 3216 // ignored; NMS lives inside system_server 3217 } 3218 } 3219 3220 private void throwIfLockdownEnabled() { 3221 if (mLockdownEnabled) { 3222 throw new IllegalStateException("Unavailable in lockdown mode"); 3223 } 3224 } 3225 3226 @Override 3227 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3228 // TODO: Remove? Any reason to trigger a provisioning check? 3229 return -1; 3230 } 3231 3232 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3233 private volatile boolean mIsNotificationVisible = false; 3234 3235 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3236 if (DBG) { 3237 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3238 + " action=" + action); 3239 } 3240 Intent intent = new Intent(action); 3241 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3242 // Concatenate the range of types onto the range of NetIDs. 3243 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3244 setProvNotificationVisibleIntent(visible, id, networkType, null, pendingIntent); 3245 } 3246 3247 /** 3248 * Show or hide network provisioning notificaitons. 3249 * 3250 * @param id an identifier that uniquely identifies this notification. This must match 3251 * between show and hide calls. We use the NetID value but for legacy callers 3252 * we concatenate the range of types with the range of NetIDs. 3253 */ 3254 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 3255 String extraInfo, PendingIntent intent) { 3256 if (DBG) { 3257 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 3258 networkType + " extraInfo=" + extraInfo); 3259 } 3260 3261 Resources r = Resources.getSystem(); 3262 NotificationManager notificationManager = (NotificationManager) mContext 3263 .getSystemService(Context.NOTIFICATION_SERVICE); 3264 3265 if (visible) { 3266 CharSequence title; 3267 CharSequence details; 3268 int icon; 3269 Notification notification = new Notification(); 3270 switch (networkType) { 3271 case ConnectivityManager.TYPE_WIFI: 3272 title = r.getString(R.string.wifi_available_sign_in, 0); 3273 details = r.getString(R.string.network_available_sign_in_detailed, 3274 extraInfo); 3275 icon = R.drawable.stat_notify_wifi_in_range; 3276 break; 3277 case ConnectivityManager.TYPE_MOBILE: 3278 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3279 title = r.getString(R.string.network_available_sign_in, 0); 3280 // TODO: Change this to pull from NetworkInfo once a printable 3281 // name has been added to it 3282 details = mTelephonyManager.getNetworkOperatorName(); 3283 icon = R.drawable.stat_notify_rssi_in_range; 3284 break; 3285 default: 3286 title = r.getString(R.string.network_available_sign_in, 0); 3287 details = r.getString(R.string.network_available_sign_in_detailed, 3288 extraInfo); 3289 icon = R.drawable.stat_notify_rssi_in_range; 3290 break; 3291 } 3292 3293 notification.when = 0; 3294 notification.icon = icon; 3295 notification.flags = Notification.FLAG_AUTO_CANCEL; 3296 notification.tickerText = title; 3297 notification.color = mContext.getColor( 3298 com.android.internal.R.color.system_notification_accent_color); 3299 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3300 notification.contentIntent = intent; 3301 3302 try { 3303 notificationManager.notify(NOTIFICATION_ID, id, notification); 3304 } catch (NullPointerException npe) { 3305 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 3306 npe.printStackTrace(); 3307 } 3308 } else { 3309 try { 3310 notificationManager.cancel(NOTIFICATION_ID, id); 3311 } catch (NullPointerException npe) { 3312 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 3313 npe.printStackTrace(); 3314 } 3315 } 3316 mIsNotificationVisible = visible; 3317 } 3318 3319 /** Location to an updatable file listing carrier provisioning urls. 3320 * An example: 3321 * 3322 * <?xml version="1.0" encoding="utf-8"?> 3323 * <provisioningUrls> 3324 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3325 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3326 * </provisioningUrls> 3327 */ 3328 private static final String PROVISIONING_URL_PATH = 3329 "/data/misc/radio/provisioning_urls.xml"; 3330 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3331 3332 /** XML tag for root element. */ 3333 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3334 /** XML tag for individual url */ 3335 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3336 /** XML tag for redirected url */ 3337 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3338 /** XML attribute for mcc */ 3339 private static final String ATTR_MCC = "mcc"; 3340 /** XML attribute for mnc */ 3341 private static final String ATTR_MNC = "mnc"; 3342 3343 private static final int REDIRECTED_PROVISIONING = 1; 3344 private static final int PROVISIONING = 2; 3345 3346 private String getProvisioningUrlBaseFromFile(int type) { 3347 FileReader fileReader = null; 3348 XmlPullParser parser = null; 3349 Configuration config = mContext.getResources().getConfiguration(); 3350 String tagType; 3351 3352 switch (type) { 3353 case PROVISIONING: 3354 tagType = TAG_PROVISIONING_URL; 3355 break; 3356 case REDIRECTED_PROVISIONING: 3357 tagType = TAG_REDIRECTED_URL; 3358 break; 3359 default: 3360 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3361 type); 3362 } 3363 3364 try { 3365 fileReader = new FileReader(mProvisioningUrlFile); 3366 parser = Xml.newPullParser(); 3367 parser.setInput(fileReader); 3368 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3369 3370 while (true) { 3371 XmlUtils.nextElement(parser); 3372 3373 String element = parser.getName(); 3374 if (element == null) break; 3375 3376 if (element.equals(tagType)) { 3377 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3378 try { 3379 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3380 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3381 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3382 parser.next(); 3383 if (parser.getEventType() == XmlPullParser.TEXT) { 3384 return parser.getText(); 3385 } 3386 } 3387 } 3388 } catch (NumberFormatException e) { 3389 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3390 } 3391 } 3392 } 3393 return null; 3394 } catch (FileNotFoundException e) { 3395 loge("Carrier Provisioning Urls file not found"); 3396 } catch (XmlPullParserException e) { 3397 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3398 } catch (IOException e) { 3399 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3400 } finally { 3401 if (fileReader != null) { 3402 try { 3403 fileReader.close(); 3404 } catch (IOException e) {} 3405 } 3406 } 3407 return null; 3408 } 3409 3410 @Override 3411 public String getMobileRedirectedProvisioningUrl() { 3412 enforceConnectivityInternalPermission(); 3413 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3414 if (TextUtils.isEmpty(url)) { 3415 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3416 } 3417 return url; 3418 } 3419 3420 @Override 3421 public String getMobileProvisioningUrl() { 3422 enforceConnectivityInternalPermission(); 3423 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3424 if (TextUtils.isEmpty(url)) { 3425 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3426 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3427 } else { 3428 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3429 } 3430 // populate the iccid, imei and phone number in the provisioning url. 3431 if (!TextUtils.isEmpty(url)) { 3432 String phoneNumber = mTelephonyManager.getLine1Number(); 3433 if (TextUtils.isEmpty(phoneNumber)) { 3434 phoneNumber = "0000000000"; 3435 } 3436 url = String.format(url, 3437 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3438 mTelephonyManager.getDeviceId() /* IMEI */, 3439 phoneNumber /* Phone numer */); 3440 } 3441 3442 return url; 3443 } 3444 3445 @Override 3446 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3447 String action) { 3448 enforceConnectivityInternalPermission(); 3449 final long ident = Binder.clearCallingIdentity(); 3450 try { 3451 setProvNotificationVisible(visible, networkType, action); 3452 } finally { 3453 Binder.restoreCallingIdentity(ident); 3454 } 3455 } 3456 3457 @Override 3458 public void setAirplaneMode(boolean enable) { 3459 enforceConnectivityInternalPermission(); 3460 final long ident = Binder.clearCallingIdentity(); 3461 try { 3462 final ContentResolver cr = mContext.getContentResolver(); 3463 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3464 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3465 intent.putExtra("state", enable); 3466 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3467 } finally { 3468 Binder.restoreCallingIdentity(ident); 3469 } 3470 } 3471 3472 private void onUserStart(int userId) { 3473 synchronized(mVpns) { 3474 Vpn userVpn = mVpns.get(userId); 3475 if (userVpn != null) { 3476 loge("Starting user already has a VPN"); 3477 return; 3478 } 3479 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3480 mVpns.put(userId, userVpn); 3481 } 3482 } 3483 3484 private void onUserStop(int userId) { 3485 synchronized(mVpns) { 3486 Vpn userVpn = mVpns.get(userId); 3487 if (userVpn == null) { 3488 loge("Stopping user has no VPN"); 3489 return; 3490 } 3491 mVpns.delete(userId); 3492 } 3493 } 3494 3495 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3496 @Override 3497 public void onReceive(Context context, Intent intent) { 3498 final String action = intent.getAction(); 3499 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3500 if (userId == UserHandle.USER_NULL) return; 3501 3502 if (Intent.ACTION_USER_STARTING.equals(action)) { 3503 onUserStart(userId); 3504 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3505 onUserStop(userId); 3506 } 3507 } 3508 }; 3509 3510 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3511 new HashMap<Messenger, NetworkFactoryInfo>(); 3512 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3513 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3514 3515 private static class NetworkFactoryInfo { 3516 public final String name; 3517 public final Messenger messenger; 3518 public final AsyncChannel asyncChannel; 3519 3520 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3521 this.name = name; 3522 this.messenger = messenger; 3523 this.asyncChannel = asyncChannel; 3524 } 3525 } 3526 3527 /** 3528 * Tracks info about the requester. 3529 * Also used to notice when the calling process dies so we can self-expire 3530 */ 3531 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3532 static final boolean REQUEST = true; 3533 static final boolean LISTEN = false; 3534 3535 final NetworkRequest request; 3536 final PendingIntent mPendingIntent; 3537 boolean mPendingIntentSent; 3538 private final IBinder mBinder; 3539 final int mPid; 3540 final int mUid; 3541 final Messenger messenger; 3542 final boolean isRequest; 3543 3544 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3545 request = r; 3546 mPendingIntent = pi; 3547 messenger = null; 3548 mBinder = null; 3549 mPid = getCallingPid(); 3550 mUid = getCallingUid(); 3551 this.isRequest = isRequest; 3552 } 3553 3554 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3555 super(); 3556 messenger = m; 3557 request = r; 3558 mBinder = binder; 3559 mPid = getCallingPid(); 3560 mUid = getCallingUid(); 3561 this.isRequest = isRequest; 3562 mPendingIntent = null; 3563 3564 try { 3565 mBinder.linkToDeath(this, 0); 3566 } catch (RemoteException e) { 3567 binderDied(); 3568 } 3569 } 3570 3571 void unlinkDeathRecipient() { 3572 if (mBinder != null) { 3573 mBinder.unlinkToDeath(this, 0); 3574 } 3575 } 3576 3577 public void binderDied() { 3578 log("ConnectivityService NetworkRequestInfo binderDied(" + 3579 request + ", " + mBinder + ")"); 3580 releaseNetworkRequest(request); 3581 } 3582 3583 public String toString() { 3584 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3585 mPid + " for " + request + 3586 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3587 } 3588 } 3589 3590 @Override 3591 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3592 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3593 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3594 enforceNetworkRequestPermissions(networkCapabilities); 3595 enforceMeteredApnPolicy(networkCapabilities); 3596 3597 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3598 throw new IllegalArgumentException("Bad timeout specified"); 3599 } 3600 3601 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3602 nextNetworkRequestId()); 3603 if (DBG) log("requestNetwork for " + networkRequest); 3604 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3605 NetworkRequestInfo.REQUEST); 3606 3607 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3608 if (timeoutMs > 0) { 3609 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3610 nri), timeoutMs); 3611 } 3612 return networkRequest; 3613 } 3614 3615 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3616 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3617 enforceConnectivityInternalPermission(); 3618 } else { 3619 enforceChangePermission(); 3620 } 3621 } 3622 3623 @Override 3624 public boolean requestBandwidthUpdate(Network network) { 3625 enforceAccessPermission(); 3626 NetworkAgentInfo nai = null; 3627 if (network == null) { 3628 return false; 3629 } 3630 synchronized (mNetworkForNetId) { 3631 nai = mNetworkForNetId.get(network.netId); 3632 } 3633 if (nai != null) { 3634 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3635 return true; 3636 } 3637 return false; 3638 } 3639 3640 3641 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3642 // if UID is restricted, don't allow them to bring up metered APNs 3643 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3644 final int uidRules; 3645 final int uid = Binder.getCallingUid(); 3646 synchronized(mRulesLock) { 3647 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3648 } 3649 if ((uidRules & (RULE_REJECT_METERED | RULE_REJECT_ALL)) != 0) { 3650 // we could silently fail or we can filter the available nets to only give 3651 // them those they have access to. Chose the more useful 3652 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3653 } 3654 } 3655 } 3656 3657 @Override 3658 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3659 PendingIntent operation) { 3660 checkNotNull(operation, "PendingIntent cannot be null."); 3661 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3662 enforceNetworkRequestPermissions(networkCapabilities); 3663 enforceMeteredApnPolicy(networkCapabilities); 3664 3665 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3666 nextNetworkRequestId()); 3667 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3668 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3669 NetworkRequestInfo.REQUEST); 3670 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3671 nri)); 3672 return networkRequest; 3673 } 3674 3675 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3676 mHandler.sendMessageDelayed( 3677 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3678 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3679 } 3680 3681 @Override 3682 public void releasePendingNetworkRequest(PendingIntent operation) { 3683 checkNotNull(operation, "PendingIntent cannot be null."); 3684 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3685 getCallingUid(), 0, operation)); 3686 } 3687 3688 // In order to implement the compatibility measure for pre-M apps that call 3689 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3690 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3691 // This ensures it has permission to do so. 3692 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3693 if (nc == null) { 3694 return false; 3695 } 3696 int[] transportTypes = nc.getTransportTypes(); 3697 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3698 return false; 3699 } 3700 try { 3701 mContext.enforceCallingOrSelfPermission( 3702 android.Manifest.permission.ACCESS_WIFI_STATE, 3703 "ConnectivityService"); 3704 } catch (SecurityException e) { 3705 return false; 3706 } 3707 return true; 3708 } 3709 3710 @Override 3711 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3712 Messenger messenger, IBinder binder) { 3713 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3714 enforceAccessPermission(); 3715 } 3716 3717 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3718 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3719 if (DBG) log("listenForNetwork for " + networkRequest); 3720 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3721 NetworkRequestInfo.LISTEN); 3722 3723 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3724 return networkRequest; 3725 } 3726 3727 @Override 3728 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3729 PendingIntent operation) { 3730 } 3731 3732 @Override 3733 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3734 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3735 0, networkRequest)); 3736 } 3737 3738 @Override 3739 public void registerNetworkFactory(Messenger messenger, String name) { 3740 enforceConnectivityInternalPermission(); 3741 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3742 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3743 } 3744 3745 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3746 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3747 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3748 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3749 } 3750 3751 @Override 3752 public void unregisterNetworkFactory(Messenger messenger) { 3753 enforceConnectivityInternalPermission(); 3754 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3755 } 3756 3757 private void handleUnregisterNetworkFactory(Messenger messenger) { 3758 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3759 if (nfi == null) { 3760 loge("Failed to find Messenger in unregisterNetworkFactory"); 3761 return; 3762 } 3763 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3764 } 3765 3766 /** 3767 * NetworkAgentInfo supporting a request by requestId. 3768 * These have already been vetted (their Capabilities satisfy the request) 3769 * and the are the highest scored network available. 3770 * the are keyed off the Requests requestId. 3771 */ 3772 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 3773 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3774 new SparseArray<NetworkAgentInfo>(); 3775 3776 // NOTE: Accessed on multiple threads, must be synchronized on itself. 3777 @GuardedBy("mNetworkForNetId") 3778 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3779 new SparseArray<NetworkAgentInfo>(); 3780 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 3781 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 3782 // there may not be a strict 1:1 correlation between the two. 3783 @GuardedBy("mNetworkForNetId") 3784 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 3785 3786 // NetworkAgentInfo keyed off its connecting messenger 3787 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3788 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 3789 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3790 new HashMap<Messenger, NetworkAgentInfo>(); 3791 3792 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3793 private final NetworkRequest mDefaultRequest; 3794 3795 // Request used to optionally keep mobile data active even when higher 3796 // priority networks like Wi-Fi are active. 3797 private final NetworkRequest mDefaultMobileDataRequest; 3798 3799 private NetworkAgentInfo getDefaultNetwork() { 3800 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3801 } 3802 3803 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3804 return nai == getDefaultNetwork(); 3805 } 3806 3807 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3808 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3809 int currentScore, NetworkMisc networkMisc) { 3810 enforceConnectivityInternalPermission(); 3811 3812 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3813 // satisfies mDefaultRequest. 3814 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3815 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 3816 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 3817 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest); 3818 synchronized (this) { 3819 nai.networkMonitor.systemReady = mSystemReady; 3820 } 3821 if (DBG) log("registerNetworkAgent " + nai); 3822 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3823 return nai.network.netId; 3824 } 3825 3826 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3827 if (VDBG) log("Got NetworkAgent Messenger"); 3828 mNetworkAgentInfos.put(na.messenger, na); 3829 synchronized (mNetworkForNetId) { 3830 mNetworkForNetId.put(na.network.netId, na); 3831 } 3832 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3833 NetworkInfo networkInfo = na.networkInfo; 3834 na.networkInfo = null; 3835 updateNetworkInfo(na, networkInfo); 3836 } 3837 3838 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3839 LinkProperties newLp = networkAgent.linkProperties; 3840 int netId = networkAgent.network.netId; 3841 3842 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3843 // we do anything else, make sure its LinkProperties are accurate. 3844 if (networkAgent.clatd != null) { 3845 networkAgent.clatd.fixupLinkProperties(oldLp); 3846 } 3847 3848 updateInterfaces(newLp, oldLp, netId); 3849 updateMtu(newLp, oldLp); 3850 // TODO - figure out what to do for clat 3851// for (LinkProperties lp : newLp.getStackedLinks()) { 3852// updateMtu(lp, null); 3853// } 3854 updateTcpBufferSizes(networkAgent); 3855 3856 // TODO: deprecate and remove mDefaultDns when we can do so safely. See http://b/18327075 3857 // In L, we used it only when the network had Internet access but provided no DNS servers. 3858 // For now, just disable it, and if disabling it doesn't break things, remove it. 3859 // final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3860 // NET_CAPABILITY_INTERNET); 3861 final boolean useDefaultDns = false; 3862 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3863 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3864 3865 updateClat(newLp, oldLp, networkAgent); 3866 if (isDefaultNetwork(networkAgent)) { 3867 handleApplyDefaultProxy(newLp.getHttpProxy()); 3868 } else { 3869 updateProxy(newLp, oldLp, networkAgent); 3870 } 3871 // TODO - move this check to cover the whole function 3872 if (!Objects.equals(newLp, oldLp)) { 3873 notifyIfacesChanged(); 3874 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3875 } 3876 } 3877 3878 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3879 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3880 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3881 3882 if (!wasRunningClat && shouldRunClat) { 3883 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3884 nai.clatd.start(); 3885 } else if (wasRunningClat && !shouldRunClat) { 3886 nai.clatd.stop(); 3887 } 3888 } 3889 3890 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3891 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3892 if (oldLp != null) { 3893 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3894 } else if (newLp != null) { 3895 interfaceDiff.added = newLp.getAllInterfaceNames(); 3896 } 3897 for (String iface : interfaceDiff.added) { 3898 try { 3899 if (DBG) log("Adding iface " + iface + " to network " + netId); 3900 mNetd.addInterfaceToNetwork(iface, netId); 3901 } catch (Exception e) { 3902 loge("Exception adding interface: " + e); 3903 } 3904 } 3905 for (String iface : interfaceDiff.removed) { 3906 try { 3907 if (DBG) log("Removing iface " + iface + " from network " + netId); 3908 mNetd.removeInterfaceFromNetwork(iface, netId); 3909 } catch (Exception e) { 3910 loge("Exception removing interface: " + e); 3911 } 3912 } 3913 } 3914 3915 /** 3916 * Have netd update routes from oldLp to newLp. 3917 * @return true if routes changed between oldLp and newLp 3918 */ 3919 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3920 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3921 if (oldLp != null) { 3922 routeDiff = oldLp.compareAllRoutes(newLp); 3923 } else if (newLp != null) { 3924 routeDiff.added = newLp.getAllRoutes(); 3925 } 3926 3927 // add routes before removing old in case it helps with continuous connectivity 3928 3929 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3930 for (RouteInfo route : routeDiff.added) { 3931 if (route.hasGateway()) continue; 3932 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3933 try { 3934 mNetd.addRoute(netId, route); 3935 } catch (Exception e) { 3936 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3937 loge("Exception in addRoute for non-gateway: " + e); 3938 } 3939 } 3940 } 3941 for (RouteInfo route : routeDiff.added) { 3942 if (route.hasGateway() == false) continue; 3943 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3944 try { 3945 mNetd.addRoute(netId, route); 3946 } catch (Exception e) { 3947 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3948 loge("Exception in addRoute for gateway: " + e); 3949 } 3950 } 3951 } 3952 3953 for (RouteInfo route : routeDiff.removed) { 3954 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3955 try { 3956 mNetd.removeRoute(netId, route); 3957 } catch (Exception e) { 3958 loge("Exception in removeRoute: " + e); 3959 } 3960 } 3961 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3962 } 3963 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 3964 boolean flush, boolean useDefaultDns) { 3965 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 3966 Collection<InetAddress> dnses = newLp.getDnsServers(); 3967 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 3968 dnses = new ArrayList(); 3969 dnses.add(mDefaultDns); 3970 if (DBG) { 3971 loge("no dns provided for netId " + netId + ", so using defaults"); 3972 } 3973 } 3974 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 3975 try { 3976 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 3977 newLp.getDomains()); 3978 } catch (Exception e) { 3979 loge("Exception in setDnsServersForNetwork: " + e); 3980 } 3981 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 3982 if (defaultNai != null && defaultNai.network.netId == netId) { 3983 setDefaultDnsSystemProperties(dnses); 3984 } 3985 flushVmDnsCache(); 3986 } else if (flush) { 3987 try { 3988 mNetd.flushNetworkDnsCache(netId); 3989 } catch (Exception e) { 3990 loge("Exception in flushNetworkDnsCache: " + e); 3991 } 3992 flushVmDnsCache(); 3993 } 3994 } 3995 3996 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 3997 int last = 0; 3998 for (InetAddress dns : dnses) { 3999 ++last; 4000 String key = "net.dns" + last; 4001 String value = dns.getHostAddress(); 4002 SystemProperties.set(key, value); 4003 } 4004 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4005 String key = "net.dns" + i; 4006 SystemProperties.set(key, ""); 4007 } 4008 mNumDnsEntries = last; 4009 } 4010 4011 private void updateCapabilities(NetworkAgentInfo networkAgent, 4012 NetworkCapabilities networkCapabilities) { 4013 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 4014 synchronized (networkAgent) { 4015 networkAgent.networkCapabilities = networkCapabilities; 4016 } 4017 if (networkAgent.lastValidated) { 4018 networkAgent.networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4019 // There's no need to remove the capability if we think the network is unvalidated, 4020 // because NetworkAgents don't set the validated capability. 4021 } 4022 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 4023 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 4024 } 4025 } 4026 4027 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4028 for (int i = 0; i < nai.networkRequests.size(); i++) { 4029 NetworkRequest nr = nai.networkRequests.valueAt(i); 4030 // Don't send listening requests to factories. b/17393458 4031 if (!isRequest(nr)) continue; 4032 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4033 } 4034 } 4035 4036 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4037 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4038 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4039 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4040 networkRequest); 4041 } 4042 } 4043 4044 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4045 int notificationType) { 4046 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4047 Intent intent = new Intent(); 4048 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4049 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4050 nri.mPendingIntentSent = true; 4051 sendIntent(nri.mPendingIntent, intent); 4052 } 4053 // else not handled 4054 } 4055 4056 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4057 mPendingIntentWakeLock.acquire(); 4058 try { 4059 if (DBG) log("Sending " + pendingIntent); 4060 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4061 } catch (PendingIntent.CanceledException e) { 4062 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4063 mPendingIntentWakeLock.release(); 4064 releasePendingNetworkRequest(pendingIntent); 4065 } 4066 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4067 } 4068 4069 @Override 4070 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4071 String resultData, Bundle resultExtras) { 4072 if (DBG) log("Finished sending " + pendingIntent); 4073 mPendingIntentWakeLock.release(); 4074 // Release with a delay so the receiving client has an opportunity to put in its 4075 // own request. 4076 releasePendingNetworkRequestWithDelay(pendingIntent); 4077 } 4078 4079 private void callCallbackForRequest(NetworkRequestInfo nri, 4080 NetworkAgentInfo networkAgent, int notificationType) { 4081 if (nri.messenger == null) return; // Default request has no msgr 4082 Bundle bundle = new Bundle(); 4083 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4084 new NetworkRequest(nri.request)); 4085 Message msg = Message.obtain(); 4086 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4087 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4088 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4089 } 4090 switch (notificationType) { 4091 case ConnectivityManager.CALLBACK_LOSING: { 4092 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4093 break; 4094 } 4095 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4096 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4097 new NetworkCapabilities(networkAgent.networkCapabilities)); 4098 break; 4099 } 4100 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4101 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4102 new LinkProperties(networkAgent.linkProperties)); 4103 break; 4104 } 4105 } 4106 msg.what = notificationType; 4107 msg.setData(bundle); 4108 try { 4109 if (VDBG) { 4110 log("sending notification " + notifyTypeToName(notificationType) + 4111 " for " + nri.request); 4112 } 4113 nri.messenger.send(msg); 4114 } catch (RemoteException e) { 4115 // may occur naturally in the race of binder death. 4116 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4117 } 4118 } 4119 4120 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4121 for (int i = 0; i < nai.networkRequests.size(); i++) { 4122 NetworkRequest nr = nai.networkRequests.valueAt(i); 4123 // Ignore listening requests. 4124 if (!isRequest(nr)) continue; 4125 loge("Dead network still had at least " + nr); 4126 break; 4127 } 4128 nai.asyncChannel.disconnect(); 4129 } 4130 4131 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4132 if (oldNetwork == null) { 4133 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4134 return; 4135 } 4136 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4137 teardownUnneededNetwork(oldNetwork); 4138 } 4139 4140 private void makeDefault(NetworkAgentInfo newNetwork) { 4141 if (DBG) log("Switching to new default network: " + newNetwork); 4142 setupDataActivityTracking(newNetwork); 4143 try { 4144 mNetd.setDefaultNetId(newNetwork.network.netId); 4145 } catch (Exception e) { 4146 loge("Exception setting default network :" + e); 4147 } 4148 notifyLockdownVpn(newNetwork); 4149 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4150 updateTcpBufferSizes(newNetwork); 4151 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4152 } 4153 4154 // Handles a network appearing or improving its score. 4155 // 4156 // - Evaluates all current NetworkRequests that can be 4157 // satisfied by newNetwork, and reassigns to newNetwork 4158 // any such requests for which newNetwork is the best. 4159 // 4160 // - Lingers any validated Networks that as a result are no longer 4161 // needed. A network is needed if it is the best network for 4162 // one or more NetworkRequests, or if it is a VPN. 4163 // 4164 // - Tears down newNetwork if it just became validated 4165 // (i.e. nascent==JUST_VALIDATED) but turns out to be unneeded. 4166 // 4167 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4168 // networks that have no chance (i.e. even if validated) 4169 // of becoming the highest scoring network. 4170 // 4171 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4172 // it does not remove NetworkRequests that other Networks could better satisfy. 4173 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4174 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4175 // as it performs better by a factor of the number of Networks. 4176 // 4177 // @param newNetwork is the network to be matched against NetworkRequests. 4178 // @param nascent indicates if newNetwork just became validated, in which case it should be 4179 // torn down if unneeded. 4180 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4181 // performed to tear down unvalidated networks that have no chance (i.e. even if 4182 // validated) of becoming the highest scoring network. 4183 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, NascentState nascent, 4184 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4185 if (!newNetwork.created) return; 4186 if (nascent == NascentState.JUST_VALIDATED && !newNetwork.everValidated) { 4187 loge("ERROR: nascent network not validated."); 4188 } 4189 boolean keep = newNetwork.isVPN(); 4190 boolean isNewDefault = false; 4191 NetworkAgentInfo oldDefaultNetwork = null; 4192 if (DBG) log("rematching " + newNetwork.name()); 4193 // Find and migrate to this Network any NetworkRequests for 4194 // which this network is now the best. 4195 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4196 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4197 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4198 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4199 if (newNetwork == currentNetwork) { 4200 if (DBG) { 4201 log("Network " + newNetwork.name() + " was already satisfying" + 4202 " request " + nri.request.requestId + ". No change."); 4203 } 4204 keep = true; 4205 continue; 4206 } 4207 4208 // check if it satisfies the NetworkCapabilities 4209 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4210 if (newNetwork.satisfies(nri.request)) { 4211 if (!nri.isRequest) { 4212 // This is not a request, it's a callback listener. 4213 // Add it to newNetwork regardless of score. 4214 newNetwork.addRequest(nri.request); 4215 continue; 4216 } 4217 4218 // next check if it's better than any current network we're using for 4219 // this request 4220 if (VDBG) { 4221 log("currentScore = " + 4222 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4223 ", newScore = " + newNetwork.getCurrentScore()); 4224 } 4225 if (currentNetwork == null || 4226 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4227 if (currentNetwork != null) { 4228 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4229 currentNetwork.networkRequests.remove(nri.request.requestId); 4230 currentNetwork.networkLingered.add(nri.request); 4231 affectedNetworks.add(currentNetwork); 4232 } else { 4233 if (DBG) log(" accepting network in place of null"); 4234 } 4235 unlinger(newNetwork); 4236 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4237 newNetwork.addRequest(nri.request); 4238 keep = true; 4239 // Tell NetworkFactories about the new score, so they can stop 4240 // trying to connect if they know they cannot match it. 4241 // TODO - this could get expensive if we have alot of requests for this 4242 // network. Think about if there is a way to reduce this. Push 4243 // netid->request mapping to each factory? 4244 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4245 if (mDefaultRequest.requestId == nri.request.requestId) { 4246 isNewDefault = true; 4247 oldDefaultNetwork = currentNetwork; 4248 } 4249 } 4250 } 4251 } 4252 // Linger any networks that are no longer needed. 4253 for (NetworkAgentInfo nai : affectedNetworks) { 4254 if (nai.everValidated && unneeded(nai)) { 4255 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4256 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4257 } else { 4258 unlinger(nai); 4259 } 4260 } 4261 if (keep) { 4262 if (isNewDefault) { 4263 // Notify system services that this network is up. 4264 makeDefault(newNetwork); 4265 synchronized (ConnectivityService.this) { 4266 // have a new default network, release the transition wakelock in 4267 // a second if it's held. The second pause is to allow apps 4268 // to reconnect over the new network 4269 if (mNetTransitionWakeLock.isHeld()) { 4270 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4271 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4272 mNetTransitionWakeLockSerialNumber, 0), 4273 1000); 4274 } 4275 } 4276 } 4277 4278 // do this after the default net is switched, but 4279 // before LegacyTypeTracker sends legacy broadcasts 4280 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4281 4282 if (isNewDefault) { 4283 // Maintain the illusion: since the legacy API only 4284 // understands one network at a time, we must pretend 4285 // that the current default network disconnected before 4286 // the new one connected. 4287 if (oldDefaultNetwork != null) { 4288 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4289 oldDefaultNetwork, true); 4290 } 4291 mDefaultInetConditionPublished = newNetwork.everValidated ? 100 : 0; 4292 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4293 notifyLockdownVpn(newNetwork); 4294 } 4295 4296 // Notify battery stats service about this network, both the normal 4297 // interface and any stacked links. 4298 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4299 try { 4300 final IBatteryStats bs = BatteryStatsService.getService(); 4301 final int type = newNetwork.networkInfo.getType(); 4302 4303 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4304 bs.noteNetworkInterfaceType(baseIface, type); 4305 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4306 final String stackedIface = stacked.getInterfaceName(); 4307 bs.noteNetworkInterfaceType(stackedIface, type); 4308 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4309 } 4310 } catch (RemoteException ignored) { 4311 } 4312 4313 // This has to happen after the notifyNetworkCallbacks as that tickles each 4314 // ConnectivityManager instance so that legacy requests correctly bind dns 4315 // requests to this network. The legacy users are listening for this bcast 4316 // and will generally do a dns request so they can ensureRouteToHost and if 4317 // they do that before the callbacks happen they'll use the default network. 4318 // 4319 // TODO: Is there still a race here? We send the broadcast 4320 // after sending the callback, but if the app can receive the 4321 // broadcast before the callback, it might still break. 4322 // 4323 // This *does* introduce a race where if the user uses the new api 4324 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4325 // they may get old info. Reverse this after the old startUsing api is removed. 4326 // This is on top of the multiple intent sequencing referenced in the todo above. 4327 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4328 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4329 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4330 // legacy type tracker filters out repeat adds 4331 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4332 } 4333 } 4334 4335 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4336 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4337 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4338 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4339 if (newNetwork.isVPN()) { 4340 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4341 } 4342 } else if (nascent == NascentState.JUST_VALIDATED) { 4343 // Only tear down newly validated networks here. Leave unvalidated to either become 4344 // validated (and get evaluated against peers, one losing here), or get reaped (see 4345 // reapUnvalidatedNetworks) if they have no chance of becoming the highest scoring 4346 // network. Networks that have been up for a while and are validated should be torn 4347 // down via the lingering process so communication on that network is given time to 4348 // wrap up. 4349 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4350 teardownUnneededNetwork(newNetwork); 4351 } 4352 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4353 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4354 if (!nai.everValidated && unneeded(nai)) { 4355 if (DBG) log("Reaping " + nai.name()); 4356 teardownUnneededNetwork(nai); 4357 } 4358 } 4359 } 4360 } 4361 4362 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4363 // being disconnected. 4364 // If only one Network's score or capabilities have been modified since the last time 4365 // this function was called, pass this Network in via the "changed" arugment, otherwise 4366 // pass null. 4367 // If only one Network has been changed but its NetworkCapabilities have not changed, 4368 // pass in the Network's score (from getCurrentScore()) prior to the change via 4369 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4370 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4371 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4372 // to avoid the slowness. It is not simply enough to process just "changed", for 4373 // example in the case where "changed"'s score decreases and another network should begin 4374 // satifying a NetworkRequest that "changed" currently satisfies. 4375 4376 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4377 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4378 // rematchNetworkAndRequests() handles. 4379 if (changed != null && oldScore < changed.getCurrentScore()) { 4380 rematchNetworkAndRequests(changed, NascentState.NOT_JUST_VALIDATED, 4381 ReapUnvalidatedNetworks.REAP); 4382 } else { 4383 for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) { 4384 rematchNetworkAndRequests((NetworkAgentInfo)i.next(), 4385 NascentState.NOT_JUST_VALIDATED, 4386 // Only reap the last time through the loop. Reaping before all rematching 4387 // is complete could incorrectly teardown a network that hasn't yet been 4388 // rematched. 4389 i.hasNext() ? ReapUnvalidatedNetworks.DONT_REAP 4390 : ReapUnvalidatedNetworks.REAP); 4391 } 4392 } 4393 } 4394 4395 private void updateInetCondition(NetworkAgentInfo nai) { 4396 // Don't bother updating until we've graduated to validated at least once. 4397 if (!nai.everValidated) return; 4398 // For now only update icons for default connection. 4399 // TODO: Update WiFi and cellular icons separately. b/17237507 4400 if (!isDefaultNetwork(nai)) return; 4401 4402 int newInetCondition = nai.lastValidated ? 100 : 0; 4403 // Don't repeat publish. 4404 if (newInetCondition == mDefaultInetConditionPublished) return; 4405 4406 mDefaultInetConditionPublished = newInetCondition; 4407 sendInetConditionBroadcast(nai.networkInfo); 4408 } 4409 4410 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4411 if (mLockdownTracker != null) { 4412 if (nai != null && nai.isVPN()) { 4413 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4414 } else { 4415 mLockdownTracker.onNetworkInfoChanged(); 4416 } 4417 } 4418 } 4419 4420 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4421 NetworkInfo.State state = newInfo.getState(); 4422 NetworkInfo oldInfo = null; 4423 synchronized (networkAgent) { 4424 oldInfo = networkAgent.networkInfo; 4425 networkAgent.networkInfo = newInfo; 4426 } 4427 notifyLockdownVpn(networkAgent); 4428 4429 if (oldInfo != null && oldInfo.getState() == state) { 4430 if (VDBG) log("ignoring duplicate network state non-change"); 4431 return; 4432 } 4433 if (DBG) { 4434 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4435 (oldInfo == null ? "null" : oldInfo.getState()) + 4436 " to " + state); 4437 } 4438 4439 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4440 try { 4441 // This should never fail. Specifying an already in use NetID will cause failure. 4442 if (networkAgent.isVPN()) { 4443 mNetd.createVirtualNetwork(networkAgent.network.netId, 4444 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4445 (networkAgent.networkMisc == null || 4446 !networkAgent.networkMisc.allowBypass)); 4447 } else { 4448 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4449 } 4450 } catch (Exception e) { 4451 loge("Error creating network " + networkAgent.network.netId + ": " 4452 + e.getMessage()); 4453 return; 4454 } 4455 networkAgent.created = true; 4456 updateLinkProperties(networkAgent, null); 4457 notifyIfacesChanged(); 4458 4459 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4460 scheduleUnvalidatedPrompt(networkAgent); 4461 4462 if (networkAgent.isVPN()) { 4463 // Temporarily disable the default proxy (not global). 4464 synchronized (mProxyLock) { 4465 if (!mDefaultProxyDisabled) { 4466 mDefaultProxyDisabled = true; 4467 if (mGlobalProxy == null && mDefaultProxy != null) { 4468 sendProxyBroadcast(null); 4469 } 4470 } 4471 } 4472 // TODO: support proxy per network. 4473 } 4474 4475 // Consider network even though it is not yet validated. 4476 rematchNetworkAndRequests(networkAgent, NascentState.NOT_JUST_VALIDATED, 4477 ReapUnvalidatedNetworks.REAP); 4478 4479 // This has to happen after matching the requests, because callbacks are just requests. 4480 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4481 } else if (state == NetworkInfo.State.DISCONNECTED || 4482 state == NetworkInfo.State.SUSPENDED) { 4483 networkAgent.asyncChannel.disconnect(); 4484 if (networkAgent.isVPN()) { 4485 synchronized (mProxyLock) { 4486 if (mDefaultProxyDisabled) { 4487 mDefaultProxyDisabled = false; 4488 if (mGlobalProxy == null && mDefaultProxy != null) { 4489 sendProxyBroadcast(mDefaultProxy); 4490 } 4491 } 4492 } 4493 } 4494 } 4495 } 4496 4497 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4498 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4499 if (score < 0) { 4500 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4501 "). Bumping score to min of 0"); 4502 score = 0; 4503 } 4504 4505 final int oldScore = nai.getCurrentScore(); 4506 nai.setCurrentScore(score); 4507 4508 rematchAllNetworksAndRequests(nai, oldScore); 4509 4510 sendUpdatedScoreToFactories(nai); 4511 } 4512 4513 // notify only this one new request of the current state 4514 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4515 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4516 // TODO - read state from monitor to decide what to send. 4517// if (nai.networkMonitor.isLingering()) { 4518// notifyType = NetworkCallbacks.LOSING; 4519// } else if (nai.networkMonitor.isEvaluating()) { 4520// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4521// } 4522 if (nri.mPendingIntent == null) { 4523 callCallbackForRequest(nri, nai, notifyType); 4524 } else { 4525 sendPendingIntentForRequest(nri, nai, notifyType); 4526 } 4527 } 4528 4529 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4530 // The NetworkInfo we actually send out has no bearing on the real 4531 // state of affairs. For example, if the default connection is mobile, 4532 // and a request for HIPRI has just gone away, we need to pretend that 4533 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4534 // the state to DISCONNECTED, even though the network is of type MOBILE 4535 // and is still connected. 4536 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4537 info.setType(type); 4538 if (connected) { 4539 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4540 sendConnectedBroadcast(info); 4541 } else { 4542 info.setDetailedState(DetailedState.DISCONNECTED, info.getReason(), info.getExtraInfo()); 4543 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4544 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4545 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4546 if (info.isFailover()) { 4547 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4548 nai.networkInfo.setFailover(false); 4549 } 4550 if (info.getReason() != null) { 4551 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4552 } 4553 if (info.getExtraInfo() != null) { 4554 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4555 } 4556 NetworkAgentInfo newDefaultAgent = null; 4557 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4558 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4559 if (newDefaultAgent != null) { 4560 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4561 newDefaultAgent.networkInfo); 4562 } else { 4563 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4564 } 4565 } 4566 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4567 mDefaultInetConditionPublished); 4568 sendStickyBroadcast(intent); 4569 if (newDefaultAgent != null) { 4570 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4571 } 4572 } 4573 } 4574 4575 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4576 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4577 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4578 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4579 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4580 if (VDBG) log(" sending notification for " + nr); 4581 if (nri.mPendingIntent == null) { 4582 callCallbackForRequest(nri, networkAgent, notifyType); 4583 } else { 4584 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4585 } 4586 } 4587 } 4588 4589 private String notifyTypeToName(int notifyType) { 4590 switch (notifyType) { 4591 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4592 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4593 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4594 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4595 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4596 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4597 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4598 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4599 } 4600 return "UNKNOWN"; 4601 } 4602 4603 /** 4604 * Notify other system services that set of active ifaces has changed. 4605 */ 4606 private void notifyIfacesChanged() { 4607 try { 4608 mStatsService.forceUpdateIfaces(); 4609 } catch (Exception ignored) { 4610 } 4611 } 4612 4613 @Override 4614 public boolean addVpnAddress(String address, int prefixLength) { 4615 throwIfLockdownEnabled(); 4616 int user = UserHandle.getUserId(Binder.getCallingUid()); 4617 synchronized (mVpns) { 4618 return mVpns.get(user).addAddress(address, prefixLength); 4619 } 4620 } 4621 4622 @Override 4623 public boolean removeVpnAddress(String address, int prefixLength) { 4624 throwIfLockdownEnabled(); 4625 int user = UserHandle.getUserId(Binder.getCallingUid()); 4626 synchronized (mVpns) { 4627 return mVpns.get(user).removeAddress(address, prefixLength); 4628 } 4629 } 4630 4631 @Override 4632 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4633 throwIfLockdownEnabled(); 4634 int user = UserHandle.getUserId(Binder.getCallingUid()); 4635 boolean success; 4636 synchronized (mVpns) { 4637 success = mVpns.get(user).setUnderlyingNetworks(networks); 4638 } 4639 if (success) { 4640 notifyIfacesChanged(); 4641 } 4642 return success; 4643 } 4644 4645 @Override 4646 public void factoryReset() { 4647 enforceConnectivityInternalPermission(); 4648 4649 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 4650 return; 4651 } 4652 4653 final int userId = UserHandle.getCallingUserId(); 4654 4655 // Turn airplane mode off 4656 setAirplaneMode(false); 4657 4658 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 4659 // Untether 4660 for (String tether : getTetheredIfaces()) { 4661 untether(tether); 4662 } 4663 } 4664 4665 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 4666 // Turn VPN off 4667 VpnConfig vpnConfig = getVpnConfig(userId); 4668 if (vpnConfig != null) { 4669 if (vpnConfig.legacy) { 4670 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 4671 } else { 4672 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 4673 // in the future without user intervention. 4674 setVpnPackageAuthorization(vpnConfig.user, userId, false); 4675 4676 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 4677 } 4678 } 4679 } 4680 } 4681} 4682