ConnectivityService.java revision 62d308033f6d5fc6247430a755774bd89ce4b4ee
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.annotations.VisibleForTesting; 104import com.android.internal.app.IBatteryStats; 105import com.android.internal.net.LegacyVpnInfo; 106import com.android.internal.net.NetworkStatsFactory; 107import com.android.internal.net.VpnConfig; 108import com.android.internal.net.VpnInfo; 109import com.android.internal.net.VpnProfile; 110import com.android.internal.telephony.DctConstants; 111import com.android.internal.util.AsyncChannel; 112import com.android.internal.util.IndentingPrintWriter; 113import com.android.internal.util.XmlUtils; 114import com.android.server.am.BatteryStatsService; 115import com.android.server.connectivity.DataConnectionStats; 116import com.android.server.connectivity.NetworkDiagnostics; 117import com.android.server.connectivity.Nat464Xlat; 118import com.android.server.connectivity.NetworkAgentInfo; 119import com.android.server.connectivity.NetworkMonitor; 120import com.android.server.connectivity.PacManager; 121import com.android.server.connectivity.PermissionMonitor; 122import com.android.server.connectivity.Tethering; 123import com.android.server.connectivity.Vpn; 124import com.android.server.net.BaseNetworkObserver; 125import com.android.server.net.LockdownVpnTracker; 126import com.google.android.collect.Lists; 127import com.google.android.collect.Sets; 128 129import org.xmlpull.v1.XmlPullParser; 130import org.xmlpull.v1.XmlPullParserException; 131 132import java.io.File; 133import java.io.FileDescriptor; 134import java.io.FileNotFoundException; 135import java.io.FileReader; 136import java.io.IOException; 137import java.io.PrintWriter; 138import java.net.Inet4Address; 139import java.net.InetAddress; 140import java.net.UnknownHostException; 141import java.util.ArrayList; 142import java.util.Arrays; 143import java.util.Collection; 144import java.util.HashMap; 145import java.util.HashSet; 146import java.util.Iterator; 147import java.util.List; 148import java.util.Map; 149import java.util.Objects; 150import java.util.concurrent.atomic.AtomicInteger; 151 152/** 153 * @hide 154 */ 155public class ConnectivityService extends IConnectivityManager.Stub 156 implements PendingIntent.OnFinished { 157 private static final String TAG = "ConnectivityService"; 158 159 private static final boolean DBG = true; 160 private static final boolean VDBG = false; 161 162 private static final boolean LOGD_RULES = false; 163 164 // TODO: create better separation between radio types and network types 165 166 // how long to wait before switching back to a radio's default network 167 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 168 // system property that can override the above value 169 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 170 "android.telephony.apn-restore"; 171 172 // How long to wait before putting up a "This network doesn't have an Internet connection, 173 // connect anyway?" dialog after the user selects a network that doesn't validate. 174 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 175 176 // How long to delay to removal of a pending intent based request. 177 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 178 private final int mReleasePendingIntentDelayMs; 179 180 private Tethering mTethering; 181 182 private final PermissionMonitor mPermissionMonitor; 183 184 private KeyStore mKeyStore; 185 186 @GuardedBy("mVpns") 187 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 188 189 private boolean mLockdownEnabled; 190 private LockdownVpnTracker mLockdownTracker; 191 192 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 193 private Object mRulesLock = new Object(); 194 /** Currently active network rules by UID. */ 195 private SparseIntArray mUidRules = new SparseIntArray(); 196 /** Set of ifaces that are costly. */ 197 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 198 199 final private Context mContext; 200 private int mNetworkPreference; 201 // 0 is full bad, 100 is full good 202 private int mDefaultInetConditionPublished = 0; 203 204 private int mNumDnsEntries; 205 206 private boolean mTestMode; 207 private static ConnectivityService sServiceInstance; 208 209 private INetworkManagementService mNetd; 210 private INetworkStatsService mStatsService; 211 private INetworkPolicyManager mPolicyManager; 212 213 private String mCurrentTcpBufferSizes; 214 215 private static final int ENABLED = 1; 216 private static final int DISABLED = 0; 217 218 // Arguments to rematchNetworkAndRequests() 219 private enum NascentState { 220 // Indicates a network was just validated for the first time. If the network is found to 221 // be unwanted (i.e. not satisfy any NetworkRequests) it is torn down. 222 JUST_VALIDATED, 223 // Indicates a network was not validated for the first time immediately prior to this call. 224 NOT_JUST_VALIDATED 225 }; 226 private enum ReapUnvalidatedNetworks { 227 // Tear down unvalidated networks that have no chance (i.e. even if validated) of becoming 228 // the highest scoring network satisfying a NetworkRequest. This should be passed when it's 229 // known that there may be unvalidated networks that could potentially be reaped, and when 230 // all networks have been rematched against all NetworkRequests. 231 REAP, 232 // Don't reap unvalidated networks. This should be passed when it's known that there are 233 // no unvalidated networks that could potentially be reaped, and when some networks have 234 // not yet been rematched against all NetworkRequests. 235 DONT_REAP 236 }; 237 238 /** 239 * used internally to change our mobile data enabled flag 240 */ 241 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 242 243 /** 244 * used internally to clear a wakelock when transitioning 245 * from one net to another. Clear happens when we get a new 246 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 247 * after a timeout if no network is found (typically 1 min). 248 */ 249 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 250 251 /** 252 * used internally to reload global proxy settings 253 */ 254 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 255 256 /** 257 * used internally to send a sticky broadcast delayed. 258 */ 259 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 260 261 /** 262 * PAC manager has received new port. 263 */ 264 private static final int EVENT_PROXY_HAS_CHANGED = 16; 265 266 /** 267 * used internally when registering NetworkFactories 268 * obj = NetworkFactoryInfo 269 */ 270 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 271 272 /** 273 * used internally when registering NetworkAgents 274 * obj = Messenger 275 */ 276 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 277 278 /** 279 * used to add a network request 280 * includes a NetworkRequestInfo 281 */ 282 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 283 284 /** 285 * indicates a timeout period is over - check if we had a network yet or not 286 * and if not, call the timeout calback (but leave the request live until they 287 * cancel it. 288 * includes a NetworkRequestInfo 289 */ 290 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 291 292 /** 293 * used to add a network listener - no request 294 * includes a NetworkRequestInfo 295 */ 296 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 297 298 /** 299 * used to remove a network request, either a listener or a real request 300 * arg1 = UID of caller 301 * obj = NetworkRequest 302 */ 303 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 304 305 /** 306 * used internally when registering NetworkFactories 307 * obj = Messenger 308 */ 309 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 310 311 /** 312 * used internally to expire a wakelock when transitioning 313 * from one net to another. Expire happens when we fail to find 314 * a new network (typically after 1 minute) - 315 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 316 * a replacement network. 317 */ 318 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 319 320 /** 321 * Used internally to indicate the system is ready. 322 */ 323 private static final int EVENT_SYSTEM_READY = 25; 324 325 /** 326 * used to add a network request with a pending intent 327 * includes a NetworkRequestInfo 328 */ 329 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 330 331 /** 332 * used to remove a pending intent and its associated network request. 333 * arg1 = UID of caller 334 * obj = PendingIntent 335 */ 336 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 337 338 /** 339 * used to specify whether a network should be used even if unvalidated. 340 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 341 * arg2 = whether to remember this choice in the future (1 or 0) 342 * obj = network 343 */ 344 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 345 346 /** 347 * used to ask the user to confirm a connection to an unvalidated network. 348 * obj = network 349 */ 350 private static final int EVENT_PROMPT_UNVALIDATED = 29; 351 352 /** 353 * used internally to (re)configure mobile data always-on settings. 354 */ 355 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 356 357 /** Handler used for internal events. */ 358 final private InternalHandler mHandler; 359 /** Handler used for incoming {@link NetworkStateTracker} events. */ 360 final private NetworkStateTrackerHandler mTrackerHandler; 361 362 private boolean mSystemReady; 363 private Intent mInitialBroadcast; 364 365 private PowerManager.WakeLock mNetTransitionWakeLock; 366 private String mNetTransitionWakeLockCausedBy = ""; 367 private int mNetTransitionWakeLockSerialNumber; 368 private int mNetTransitionWakeLockTimeout; 369 private final PowerManager.WakeLock mPendingIntentWakeLock; 370 371 private InetAddress mDefaultDns; 372 373 // used in DBG mode to track inet condition reports 374 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 375 private ArrayList mInetLog; 376 377 // track the current default http proxy - tell the world if we get a new one (real change) 378 private volatile ProxyInfo mDefaultProxy = null; 379 private Object mProxyLock = new Object(); 380 private boolean mDefaultProxyDisabled = false; 381 382 // track the global proxy. 383 private ProxyInfo mGlobalProxy = null; 384 385 private PacManager mPacManager = null; 386 387 final private SettingsObserver mSettingsObserver; 388 389 private UserManager mUserManager; 390 391 NetworkConfig[] mNetConfigs; 392 int mNetworksDefined; 393 394 // the set of network types that can only be enabled by system/sig apps 395 List mProtectedNetworks; 396 397 private DataConnectionStats mDataConnectionStats; 398 399 TelephonyManager mTelephonyManager; 400 401 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 402 private final static int MIN_NET_ID = 100; // some reserved marks 403 private final static int MAX_NET_ID = 65535; 404 private int mNextNetId = MIN_NET_ID; 405 406 // sequence number of NetworkRequests 407 private int mNextNetworkRequestId = 1; 408 409 /** 410 * Implements support for the legacy "one network per network type" model. 411 * 412 * We used to have a static array of NetworkStateTrackers, one for each 413 * network type, but that doesn't work any more now that we can have, 414 * for example, more that one wifi network. This class stores all the 415 * NetworkAgentInfo objects that support a given type, but the legacy 416 * API will only see the first one. 417 * 418 * It serves two main purposes: 419 * 420 * 1. Provide information about "the network for a given type" (since this 421 * API only supports one). 422 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 423 * the first network for a given type changes, or if the default network 424 * changes. 425 */ 426 private class LegacyTypeTracker { 427 428 private static final boolean DBG = true; 429 private static final boolean VDBG = false; 430 private static final String TAG = "CSLegacyTypeTracker"; 431 432 /** 433 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 434 * Each list holds references to all NetworkAgentInfos that are used to 435 * satisfy requests for that network type. 436 * 437 * This array is built out at startup such that an unsupported network 438 * doesn't get an ArrayList instance, making this a tristate: 439 * unsupported, supported but not active and active. 440 * 441 * The actual lists are populated when we scan the network types that 442 * are supported on this device. 443 */ 444 private ArrayList<NetworkAgentInfo> mTypeLists[]; 445 446 public LegacyTypeTracker() { 447 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 448 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 449 } 450 451 public void addSupportedType(int type) { 452 if (mTypeLists[type] != null) { 453 throw new IllegalStateException( 454 "legacy list for type " + type + "already initialized"); 455 } 456 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 457 } 458 459 public boolean isTypeSupported(int type) { 460 return isNetworkTypeValid(type) && mTypeLists[type] != null; 461 } 462 463 public NetworkAgentInfo getNetworkForType(int type) { 464 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 465 return mTypeLists[type].get(0); 466 } else { 467 return null; 468 } 469 } 470 471 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type, 472 boolean isDefaultNetwork) { 473 if (DBG) { 474 log("Sending " + (connected ? "connected" : "disconnected") + 475 " broadcast for type " + type + " " + nai.name() + 476 " isDefaultNetwork=" + isDefaultNetwork); 477 } 478 } 479 480 /** Adds the given network to the specified legacy type list. */ 481 public void add(int type, NetworkAgentInfo nai) { 482 if (!isTypeSupported(type)) { 483 return; // Invalid network type. 484 } 485 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 486 487 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 488 if (list.contains(nai)) { 489 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 490 return; 491 } 492 493 list.add(nai); 494 495 // Send a broadcast if this is the first network of its type or if it's the default. 496 final boolean isDefaultNetwork = isDefaultNetwork(nai); 497 if (list.size() == 1 || isDefaultNetwork) { 498 maybeLogBroadcast(nai, true, type, isDefaultNetwork); 499 sendLegacyNetworkBroadcast(nai, true, type); 500 } 501 } 502 503 /** Removes the given network from the specified legacy type list. */ 504 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 505 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 506 if (list == null || list.isEmpty()) { 507 return; 508 } 509 510 final boolean wasFirstNetwork = list.get(0).equals(nai); 511 512 if (!list.remove(nai)) { 513 return; 514 } 515 516 if (wasFirstNetwork || wasDefault) { 517 maybeLogBroadcast(nai, false, type, wasDefault); 518 sendLegacyNetworkBroadcast(nai, false, type); 519 } 520 521 if (!list.isEmpty() && wasFirstNetwork) { 522 if (DBG) log("Other network available for type " + type + 523 ", sending connected broadcast"); 524 final NetworkAgentInfo replacement = list.get(0); 525 maybeLogBroadcast(replacement, false, type, isDefaultNetwork(replacement)); 526 sendLegacyNetworkBroadcast(replacement, false, type); 527 } 528 } 529 530 /** Removes the given network from all legacy type lists. */ 531 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 532 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 533 for (int type = 0; type < mTypeLists.length; type++) { 534 remove(type, nai, wasDefault); 535 } 536 } 537 538 private String naiToString(NetworkAgentInfo nai) { 539 String name = (nai != null) ? nai.name() : "null"; 540 String state = (nai.networkInfo != null) ? 541 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 542 "???/???"; 543 return name + " " + state; 544 } 545 546 public void dump(IndentingPrintWriter pw) { 547 pw.println("mLegacyTypeTracker:"); 548 pw.increaseIndent(); 549 pw.print("Supported types:"); 550 for (int type = 0; type < mTypeLists.length; type++) { 551 if (mTypeLists[type] != null) pw.print(" " + type); 552 } 553 pw.println(); 554 pw.println("Current state:"); 555 pw.increaseIndent(); 556 for (int type = 0; type < mTypeLists.length; type++) { 557 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 558 for (NetworkAgentInfo nai : mTypeLists[type]) { 559 pw.println(type + " " + naiToString(nai)); 560 } 561 } 562 pw.decreaseIndent(); 563 pw.decreaseIndent(); 564 pw.println(); 565 } 566 567 // This class needs its own log method because it has a different TAG. 568 private void log(String s) { 569 Slog.d(TAG, s); 570 } 571 572 } 573 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 574 575 public ConnectivityService(Context context, INetworkManagementService netManager, 576 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 577 if (DBG) log("ConnectivityService starting up"); 578 579 mDefaultRequest = createInternetRequestForTransport(-1); 580 mNetworkRequests.put(mDefaultRequest, new NetworkRequestInfo( 581 null, mDefaultRequest, new Binder(), NetworkRequestInfo.REQUEST)); 582 583 mDefaultMobileDataRequest = createInternetRequestForTransport( 584 NetworkCapabilities.TRANSPORT_CELLULAR); 585 586 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 587 handlerThread.start(); 588 mHandler = new InternalHandler(handlerThread.getLooper()); 589 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 590 591 // setup our unique device name 592 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 593 String id = Settings.Secure.getString(context.getContentResolver(), 594 Settings.Secure.ANDROID_ID); 595 if (id != null && id.length() > 0) { 596 String name = new String("android-").concat(id); 597 SystemProperties.set("net.hostname", name); 598 } 599 } 600 601 // read our default dns server ip 602 String dns = Settings.Global.getString(context.getContentResolver(), 603 Settings.Global.DEFAULT_DNS_SERVER); 604 if (dns == null || dns.length() == 0) { 605 dns = context.getResources().getString( 606 com.android.internal.R.string.config_default_dns_server); 607 } 608 try { 609 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 610 } catch (IllegalArgumentException e) { 611 loge("Error setting defaultDns using " + dns); 612 } 613 614 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 615 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 616 617 mContext = checkNotNull(context, "missing Context"); 618 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 619 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 620 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 621 mKeyStore = KeyStore.getInstance(); 622 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 623 624 try { 625 mPolicyManager.registerListener(mPolicyListener); 626 } catch (RemoteException e) { 627 // ouch, no rules updates means some processes may never get network 628 loge("unable to register INetworkPolicyListener" + e.toString()); 629 } 630 631 final PowerManager powerManager = (PowerManager) context.getSystemService( 632 Context.POWER_SERVICE); 633 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 634 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 635 com.android.internal.R.integer.config_networkTransitionTimeout); 636 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 637 638 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 639 640 // TODO: What is the "correct" way to do determine if this is a wifi only device? 641 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 642 log("wifiOnly=" + wifiOnly); 643 String[] naStrings = context.getResources().getStringArray( 644 com.android.internal.R.array.networkAttributes); 645 for (String naString : naStrings) { 646 try { 647 NetworkConfig n = new NetworkConfig(naString); 648 if (VDBG) log("naString=" + naString + " config=" + n); 649 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 650 loge("Error in networkAttributes - ignoring attempt to define type " + 651 n.type); 652 continue; 653 } 654 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 655 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 656 n.type); 657 continue; 658 } 659 if (mNetConfigs[n.type] != null) { 660 loge("Error in networkAttributes - ignoring attempt to redefine type " + 661 n.type); 662 continue; 663 } 664 mLegacyTypeTracker.addSupportedType(n.type); 665 666 mNetConfigs[n.type] = n; 667 mNetworksDefined++; 668 } catch(Exception e) { 669 // ignore it - leave the entry null 670 } 671 } 672 673 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 674 if (mNetConfigs[TYPE_VPN] == null) { 675 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 676 // don't need to add TYPE_VPN to mNetConfigs. 677 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 678 mNetworksDefined++; // used only in the log() statement below. 679 } 680 681 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 682 683 mProtectedNetworks = new ArrayList<Integer>(); 684 int[] protectedNetworks = context.getResources().getIntArray( 685 com.android.internal.R.array.config_protectedNetworks); 686 for (int p : protectedNetworks) { 687 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 688 mProtectedNetworks.add(p); 689 } else { 690 if (DBG) loge("Ignoring protectedNetwork " + p); 691 } 692 } 693 694 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 695 && SystemProperties.get("ro.build.type").equals("eng"); 696 697 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 698 699 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 700 701 //set up the listener for user state for creating user VPNs 702 IntentFilter intentFilter = new IntentFilter(); 703 intentFilter.addAction(Intent.ACTION_USER_STARTING); 704 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 705 mContext.registerReceiverAsUser( 706 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 707 708 try { 709 mNetd.registerObserver(mTethering); 710 mNetd.registerObserver(mDataActivityObserver); 711 } catch (RemoteException e) { 712 loge("Error registering observer :" + e); 713 } 714 715 if (DBG) { 716 mInetLog = new ArrayList(); 717 } 718 719 mSettingsObserver = new SettingsObserver(mContext, mHandler); 720 registerSettingsCallbacks(); 721 722 mDataConnectionStats = new DataConnectionStats(mContext); 723 mDataConnectionStats.startMonitoring(); 724 725 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 726 727 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 728 } 729 730 private NetworkRequest createInternetRequestForTransport(int transportType) { 731 NetworkCapabilities netCap = new NetworkCapabilities(); 732 netCap.addCapability(NET_CAPABILITY_INTERNET); 733 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 734 if (transportType > -1) { 735 netCap.addTransportType(transportType); 736 } 737 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 738 } 739 740 private void handleMobileDataAlwaysOn() { 741 final boolean enable = (Settings.Global.getInt( 742 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 743 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 744 if (enable == isEnabled) { 745 return; // Nothing to do. 746 } 747 748 if (enable) { 749 handleRegisterNetworkRequest(new NetworkRequestInfo( 750 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestInfo.REQUEST)); 751 } else { 752 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 753 } 754 } 755 756 private void registerSettingsCallbacks() { 757 // Watch for global HTTP proxy changes. 758 mSettingsObserver.observe( 759 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 760 EVENT_APPLY_GLOBAL_HTTP_PROXY); 761 762 // Watch for whether or not to keep mobile data always on. 763 mSettingsObserver.observe( 764 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 765 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 766 } 767 768 private synchronized int nextNetworkRequestId() { 769 return mNextNetworkRequestId++; 770 } 771 772 @VisibleForTesting 773 protected int reserveNetId() { 774 synchronized (mNetworkForNetId) { 775 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 776 int netId = mNextNetId; 777 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 778 // Make sure NetID unused. http://b/16815182 779 if (!mNetIdInUse.get(netId)) { 780 mNetIdInUse.put(netId, true); 781 return netId; 782 } 783 } 784 } 785 throw new IllegalStateException("No free netIds"); 786 } 787 788 private NetworkState getFilteredNetworkState(int networkType, int uid) { 789 NetworkInfo info = null; 790 LinkProperties lp = null; 791 NetworkCapabilities nc = null; 792 Network network = null; 793 String subscriberId = null; 794 795 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 796 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 797 if (nai != null) { 798 synchronized (nai) { 799 info = new NetworkInfo(nai.networkInfo); 800 lp = new LinkProperties(nai.linkProperties); 801 nc = new NetworkCapabilities(nai.networkCapabilities); 802 // Network objects are outwardly immutable so there is no point to duplicating. 803 // Duplicating also precludes sharing socket factories and connection pools. 804 network = nai.network; 805 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 806 } 807 info.setType(networkType); 808 } else { 809 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 810 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 811 info.setIsAvailable(true); 812 lp = new LinkProperties(); 813 nc = new NetworkCapabilities(); 814 network = null; 815 } 816 info = getFilteredNetworkInfo(info, lp, uid); 817 } 818 819 return new NetworkState(info, lp, nc, network, subscriberId, null); 820 } 821 822 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 823 if (network == null) { 824 return null; 825 } 826 synchronized (mNetworkForNetId) { 827 return mNetworkForNetId.get(network.netId); 828 } 829 }; 830 831 private Network[] getVpnUnderlyingNetworks(int uid) { 832 if (!mLockdownEnabled) { 833 int user = UserHandle.getUserId(uid); 834 synchronized (mVpns) { 835 Vpn vpn = mVpns.get(user); 836 if (vpn != null && vpn.appliesToUid(uid)) { 837 return vpn.getUnderlyingNetworks(); 838 } 839 } 840 } 841 return null; 842 } 843 844 private NetworkState getUnfilteredActiveNetworkState(int uid) { 845 NetworkInfo info = null; 846 LinkProperties lp = null; 847 NetworkCapabilities nc = null; 848 Network network = null; 849 String subscriberId = null; 850 851 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 852 853 final Network[] networks = getVpnUnderlyingNetworks(uid); 854 if (networks != null) { 855 // getUnderlyingNetworks() returns: 856 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 857 // empty array => the VPN explicitly said "no default network". 858 // non-empty array => the VPN specified one or more default networks; we use the 859 // first one. 860 if (networks.length > 0) { 861 nai = getNetworkAgentInfoForNetwork(networks[0]); 862 } else { 863 nai = null; 864 } 865 } 866 867 if (nai != null) { 868 synchronized (nai) { 869 info = new NetworkInfo(nai.networkInfo); 870 lp = new LinkProperties(nai.linkProperties); 871 nc = new NetworkCapabilities(nai.networkCapabilities); 872 // Network objects are outwardly immutable so there is no point to duplicating. 873 // Duplicating also precludes sharing socket factories and connection pools. 874 network = nai.network; 875 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 876 } 877 } 878 879 return new NetworkState(info, lp, nc, network, subscriberId, null); 880 } 881 882 /** 883 * Check if UID should be blocked from using the network with the given LinkProperties. 884 */ 885 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 886 final boolean networkCostly; 887 final int uidRules; 888 889 final String iface = (lp == null ? "" : lp.getInterfaceName()); 890 synchronized (mRulesLock) { 891 networkCostly = mMeteredIfaces.contains(iface); 892 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 893 } 894 895 if ((uidRules & RULE_REJECT_ALL) != 0 896 || (networkCostly && (uidRules & RULE_REJECT_METERED) != 0)) { 897 return true; 898 } 899 900 // no restrictive rules; network is visible 901 return false; 902 } 903 904 /** 905 * Return a filtered {@link NetworkInfo}, potentially marked 906 * {@link DetailedState#BLOCKED} based on 907 * {@link #isNetworkWithLinkPropertiesBlocked}. 908 */ 909 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 910 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 911 // network is blocked; clone and override state 912 info = new NetworkInfo(info); 913 info.setDetailedState(DetailedState.BLOCKED, null, null); 914 if (VDBG) { 915 log("returning Blocked NetworkInfo for ifname=" + 916 lp.getInterfaceName() + ", uid=" + uid); 917 } 918 } 919 if (info != null && mLockdownTracker != null) { 920 info = mLockdownTracker.augmentNetworkInfo(info); 921 if (VDBG) log("returning Locked NetworkInfo"); 922 } 923 return info; 924 } 925 926 /** 927 * Return NetworkInfo for the active (i.e., connected) network interface. 928 * It is assumed that at most one network is active at a time. If more 929 * than one is active, it is indeterminate which will be returned. 930 * @return the info for the active network, or {@code null} if none is 931 * active 932 */ 933 @Override 934 public NetworkInfo getActiveNetworkInfo() { 935 enforceAccessPermission(); 936 final int uid = Binder.getCallingUid(); 937 NetworkState state = getUnfilteredActiveNetworkState(uid); 938 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 939 } 940 941 @Override 942 public Network getActiveNetwork() { 943 enforceAccessPermission(); 944 final int uid = Binder.getCallingUid(); 945 final int user = UserHandle.getUserId(uid); 946 int vpnNetId = NETID_UNSET; 947 synchronized (mVpns) { 948 final Vpn vpn = mVpns.get(user); 949 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 950 } 951 NetworkAgentInfo nai; 952 if (vpnNetId != NETID_UNSET) { 953 synchronized (mNetworkForNetId) { 954 nai = mNetworkForNetId.get(vpnNetId); 955 } 956 if (nai != null) return nai.network; 957 } 958 nai = getDefaultNetwork(); 959 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 960 return nai != null ? nai.network : null; 961 } 962 963 /** 964 * Find the first Provisioning network. 965 * 966 * @return NetworkInfo or null if none. 967 */ 968 private NetworkInfo getProvisioningNetworkInfo() { 969 enforceAccessPermission(); 970 971 // Find the first Provisioning Network 972 NetworkInfo provNi = null; 973 for (NetworkInfo ni : getAllNetworkInfo()) { 974 if (ni.isConnectedToProvisioningNetwork()) { 975 provNi = ni; 976 break; 977 } 978 } 979 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 980 return provNi; 981 } 982 983 /** 984 * Find the first Provisioning network or the ActiveDefaultNetwork 985 * if there is no Provisioning network 986 * 987 * @return NetworkInfo or null if none. 988 */ 989 @Override 990 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 991 enforceAccessPermission(); 992 993 NetworkInfo provNi = getProvisioningNetworkInfo(); 994 if (provNi == null) { 995 provNi = getActiveNetworkInfo(); 996 } 997 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 998 return provNi; 999 } 1000 1001 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1002 enforceAccessPermission(); 1003 final int uid = Binder.getCallingUid(); 1004 NetworkState state = getUnfilteredActiveNetworkState(uid); 1005 return state.networkInfo; 1006 } 1007 1008 @Override 1009 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1010 enforceConnectivityInternalPermission(); 1011 NetworkState state = getUnfilteredActiveNetworkState(uid); 1012 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1013 } 1014 1015 @Override 1016 public NetworkInfo getNetworkInfo(int networkType) { 1017 enforceAccessPermission(); 1018 final int uid = Binder.getCallingUid(); 1019 if (getVpnUnderlyingNetworks(uid) != null) { 1020 // A VPN is active, so we may need to return one of its underlying networks. This 1021 // information is not available in LegacyTypeTracker, so we have to get it from 1022 // getUnfilteredActiveNetworkState. 1023 NetworkState state = getUnfilteredActiveNetworkState(uid); 1024 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1025 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1026 } 1027 } 1028 NetworkState state = getFilteredNetworkState(networkType, uid); 1029 return state.networkInfo; 1030 } 1031 1032 @Override 1033 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1034 enforceAccessPermission(); 1035 final int uid = Binder.getCallingUid(); 1036 NetworkInfo info = null; 1037 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1038 if (nai != null) { 1039 synchronized (nai) { 1040 info = new NetworkInfo(nai.networkInfo); 1041 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1042 } 1043 } 1044 return info; 1045 } 1046 1047 @Override 1048 public NetworkInfo[] getAllNetworkInfo() { 1049 enforceAccessPermission(); 1050 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1051 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1052 networkType++) { 1053 NetworkInfo info = getNetworkInfo(networkType); 1054 if (info != null) { 1055 result.add(info); 1056 } 1057 } 1058 return result.toArray(new NetworkInfo[result.size()]); 1059 } 1060 1061 @Override 1062 public Network getNetworkForType(int networkType) { 1063 enforceAccessPermission(); 1064 final int uid = Binder.getCallingUid(); 1065 NetworkState state = getFilteredNetworkState(networkType, uid); 1066 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1067 return state.network; 1068 } 1069 return null; 1070 } 1071 1072 @Override 1073 public Network[] getAllNetworks() { 1074 enforceAccessPermission(); 1075 synchronized (mNetworkForNetId) { 1076 final Network[] result = new Network[mNetworkForNetId.size()]; 1077 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1078 result[i] = mNetworkForNetId.valueAt(i).network; 1079 } 1080 return result; 1081 } 1082 } 1083 1084 @Override 1085 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1086 // The basic principle is: if an app's traffic could possibly go over a 1087 // network, without the app doing anything multinetwork-specific, 1088 // (hence, by "default"), then include that network's capabilities in 1089 // the array. 1090 // 1091 // In the normal case, app traffic only goes over the system's default 1092 // network connection, so that's the only network returned. 1093 // 1094 // With a VPN in force, some app traffic may go into the VPN, and thus 1095 // over whatever underlying networks the VPN specifies, while other app 1096 // traffic may go over the system default network (e.g.: a split-tunnel 1097 // VPN, or an app disallowed by the VPN), so the set of networks 1098 // returned includes the VPN's underlying networks and the system 1099 // default. 1100 enforceAccessPermission(); 1101 1102 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1103 1104 NetworkAgentInfo nai = getDefaultNetwork(); 1105 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1106 if (nc != null) { 1107 result.put(nai.network, nc); 1108 } 1109 1110 if (!mLockdownEnabled) { 1111 synchronized (mVpns) { 1112 Vpn vpn = mVpns.get(userId); 1113 if (vpn != null) { 1114 Network[] networks = vpn.getUnderlyingNetworks(); 1115 if (networks != null) { 1116 for (Network network : networks) { 1117 nai = getNetworkAgentInfoForNetwork(network); 1118 nc = getNetworkCapabilitiesInternal(nai); 1119 if (nc != null) { 1120 result.put(network, nc); 1121 } 1122 } 1123 } 1124 } 1125 } 1126 } 1127 1128 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1129 out = result.values().toArray(out); 1130 return out; 1131 } 1132 1133 @Override 1134 public boolean isNetworkSupported(int networkType) { 1135 enforceAccessPermission(); 1136 return mLegacyTypeTracker.isTypeSupported(networkType); 1137 } 1138 1139 /** 1140 * Return LinkProperties for the active (i.e., connected) default 1141 * network interface. It is assumed that at most one default network 1142 * is active at a time. If more than one is active, it is indeterminate 1143 * which will be returned. 1144 * @return the ip properties for the active network, or {@code null} if 1145 * none is active 1146 */ 1147 @Override 1148 public LinkProperties getActiveLinkProperties() { 1149 enforceAccessPermission(); 1150 final int uid = Binder.getCallingUid(); 1151 NetworkState state = getUnfilteredActiveNetworkState(uid); 1152 return state.linkProperties; 1153 } 1154 1155 @Override 1156 public LinkProperties getLinkPropertiesForType(int networkType) { 1157 enforceAccessPermission(); 1158 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1159 if (nai != null) { 1160 synchronized (nai) { 1161 return new LinkProperties(nai.linkProperties); 1162 } 1163 } 1164 return null; 1165 } 1166 1167 // TODO - this should be ALL networks 1168 @Override 1169 public LinkProperties getLinkProperties(Network network) { 1170 enforceAccessPermission(); 1171 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1172 if (nai != null) { 1173 synchronized (nai) { 1174 return new LinkProperties(nai.linkProperties); 1175 } 1176 } 1177 return null; 1178 } 1179 1180 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1181 if (nai != null) { 1182 synchronized (nai) { 1183 if (nai.networkCapabilities != null) { 1184 return new NetworkCapabilities(nai.networkCapabilities); 1185 } 1186 } 1187 } 1188 return null; 1189 } 1190 1191 @Override 1192 public NetworkCapabilities getNetworkCapabilities(Network network) { 1193 enforceAccessPermission(); 1194 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1195 } 1196 1197 @Override 1198 public NetworkState[] getAllNetworkState() { 1199 // Require internal since we're handing out IMSI details 1200 enforceConnectivityInternalPermission(); 1201 1202 final ArrayList<NetworkState> result = Lists.newArrayList(); 1203 for (Network network : getAllNetworks()) { 1204 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1205 if (nai != null) { 1206 synchronized (nai) { 1207 final String subscriberId = (nai.networkMisc != null) 1208 ? nai.networkMisc.subscriberId : null; 1209 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1210 nai.networkCapabilities, network, subscriberId, null)); 1211 } 1212 } 1213 } 1214 return result.toArray(new NetworkState[result.size()]); 1215 } 1216 1217 @Override 1218 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1219 enforceAccessPermission(); 1220 final int uid = Binder.getCallingUid(); 1221 final long token = Binder.clearCallingIdentity(); 1222 try { 1223 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1224 if (state.networkInfo != null) { 1225 try { 1226 return mPolicyManager.getNetworkQuotaInfo(state); 1227 } catch (RemoteException e) { 1228 } 1229 } 1230 return null; 1231 } finally { 1232 Binder.restoreCallingIdentity(token); 1233 } 1234 } 1235 1236 @Override 1237 public boolean isActiveNetworkMetered() { 1238 enforceAccessPermission(); 1239 final int uid = Binder.getCallingUid(); 1240 final long token = Binder.clearCallingIdentity(); 1241 try { 1242 return isActiveNetworkMeteredUnchecked(uid); 1243 } finally { 1244 Binder.restoreCallingIdentity(token); 1245 } 1246 } 1247 1248 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1249 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1250 if (state.networkInfo != null) { 1251 try { 1252 return mPolicyManager.isNetworkMetered(state); 1253 } catch (RemoteException e) { 1254 } 1255 } 1256 return false; 1257 } 1258 1259 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1260 @Override 1261 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1262 int deviceType = Integer.parseInt(label); 1263 sendDataActivityBroadcast(deviceType, active, tsNanos); 1264 } 1265 }; 1266 1267 /** 1268 * Ensure that a network route exists to deliver traffic to the specified 1269 * host via the specified network interface. 1270 * @param networkType the type of the network over which traffic to the 1271 * specified host is to be routed 1272 * @param hostAddress the IP address of the host to which the route is 1273 * desired 1274 * @return {@code true} on success, {@code false} on failure 1275 */ 1276 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1277 enforceChangePermission(); 1278 if (mProtectedNetworks.contains(networkType)) { 1279 enforceConnectivityInternalPermission(); 1280 } 1281 1282 InetAddress addr; 1283 try { 1284 addr = InetAddress.getByAddress(hostAddress); 1285 } catch (UnknownHostException e) { 1286 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1287 return false; 1288 } 1289 1290 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1291 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1292 return false; 1293 } 1294 1295 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1296 if (nai == null) { 1297 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1298 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1299 } else { 1300 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1301 } 1302 return false; 1303 } 1304 1305 DetailedState netState; 1306 synchronized (nai) { 1307 netState = nai.networkInfo.getDetailedState(); 1308 } 1309 1310 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1311 if (VDBG) { 1312 log("requestRouteToHostAddress on down network " 1313 + "(" + networkType + ") - dropped" 1314 + " netState=" + netState); 1315 } 1316 return false; 1317 } 1318 1319 final int uid = Binder.getCallingUid(); 1320 final long token = Binder.clearCallingIdentity(); 1321 try { 1322 LinkProperties lp; 1323 int netId; 1324 synchronized (nai) { 1325 lp = nai.linkProperties; 1326 netId = nai.network.netId; 1327 } 1328 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1329 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1330 return ok; 1331 } finally { 1332 Binder.restoreCallingIdentity(token); 1333 } 1334 } 1335 1336 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1337 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1338 if (bestRoute == null) { 1339 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1340 } else { 1341 String iface = bestRoute.getInterface(); 1342 if (bestRoute.getGateway().equals(addr)) { 1343 // if there is no better route, add the implied hostroute for our gateway 1344 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1345 } else { 1346 // if we will connect to this through another route, add a direct route 1347 // to it's gateway 1348 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1349 } 1350 } 1351 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1352 try { 1353 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1354 } catch (Exception e) { 1355 // never crash - catch them all 1356 if (DBG) loge("Exception trying to add a route: " + e); 1357 return false; 1358 } 1359 return true; 1360 } 1361 1362 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1363 @Override 1364 public void onUidRulesChanged(int uid, int uidRules) { 1365 // caller is NPMS, since we only register with them 1366 if (LOGD_RULES) { 1367 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1368 } 1369 1370 synchronized (mRulesLock) { 1371 // skip update when we've already applied rules 1372 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1373 if (oldRules == uidRules) return; 1374 1375 mUidRules.put(uid, uidRules); 1376 } 1377 1378 // TODO: notify UID when it has requested targeted updates 1379 } 1380 1381 @Override 1382 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1383 // caller is NPMS, since we only register with them 1384 if (LOGD_RULES) { 1385 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1386 } 1387 1388 synchronized (mRulesLock) { 1389 mMeteredIfaces.clear(); 1390 for (String iface : meteredIfaces) { 1391 mMeteredIfaces.add(iface); 1392 } 1393 } 1394 } 1395 1396 @Override 1397 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1398 // caller is NPMS, since we only register with them 1399 if (LOGD_RULES) { 1400 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1401 } 1402 } 1403 }; 1404 1405 /** 1406 * Require that the caller is either in the same user or has appropriate permission to interact 1407 * across users. 1408 * 1409 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1410 */ 1411 private void enforceCrossUserPermission(int userId) { 1412 if (userId == UserHandle.getCallingUserId()) { 1413 // Not a cross-user call. 1414 return; 1415 } 1416 mContext.enforceCallingOrSelfPermission( 1417 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1418 "ConnectivityService"); 1419 } 1420 1421 private void enforceInternetPermission() { 1422 mContext.enforceCallingOrSelfPermission( 1423 android.Manifest.permission.INTERNET, 1424 "ConnectivityService"); 1425 } 1426 1427 private void enforceAccessPermission() { 1428 mContext.enforceCallingOrSelfPermission( 1429 android.Manifest.permission.ACCESS_NETWORK_STATE, 1430 "ConnectivityService"); 1431 } 1432 1433 private void enforceChangePermission() { 1434 mContext.enforceCallingOrSelfPermission( 1435 android.Manifest.permission.CHANGE_NETWORK_STATE, 1436 "ConnectivityService"); 1437 } 1438 1439 private void enforceTetherAccessPermission() { 1440 mContext.enforceCallingOrSelfPermission( 1441 android.Manifest.permission.ACCESS_NETWORK_STATE, 1442 "ConnectivityService"); 1443 } 1444 1445 private void enforceConnectivityInternalPermission() { 1446 mContext.enforceCallingOrSelfPermission( 1447 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1448 "ConnectivityService"); 1449 } 1450 1451 public void sendConnectedBroadcast(NetworkInfo info) { 1452 enforceConnectivityInternalPermission(); 1453 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1454 } 1455 1456 private void sendInetConditionBroadcast(NetworkInfo info) { 1457 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1458 } 1459 1460 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1461 if (mLockdownTracker != null) { 1462 info = mLockdownTracker.augmentNetworkInfo(info); 1463 } 1464 1465 Intent intent = new Intent(bcastType); 1466 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1467 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1468 if (info.isFailover()) { 1469 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1470 info.setFailover(false); 1471 } 1472 if (info.getReason() != null) { 1473 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1474 } 1475 if (info.getExtraInfo() != null) { 1476 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1477 info.getExtraInfo()); 1478 } 1479 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1480 return intent; 1481 } 1482 1483 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1484 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1485 } 1486 1487 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1488 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1489 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1490 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1491 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1492 final long ident = Binder.clearCallingIdentity(); 1493 try { 1494 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1495 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1496 } finally { 1497 Binder.restoreCallingIdentity(ident); 1498 } 1499 } 1500 1501 private void sendStickyBroadcast(Intent intent) { 1502 synchronized(this) { 1503 if (!mSystemReady) { 1504 mInitialBroadcast = new Intent(intent); 1505 } 1506 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1507 if (DBG) { 1508 log("sendStickyBroadcast: action=" + intent.getAction()); 1509 } 1510 1511 final long ident = Binder.clearCallingIdentity(); 1512 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1513 final IBatteryStats bs = BatteryStatsService.getService(); 1514 try { 1515 NetworkInfo ni = intent.getParcelableExtra( 1516 ConnectivityManager.EXTRA_NETWORK_INFO); 1517 bs.noteConnectivityChanged(intent.getIntExtra( 1518 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1519 ni != null ? ni.getState().toString() : "?"); 1520 } catch (RemoteException e) { 1521 } 1522 } 1523 try { 1524 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1525 } finally { 1526 Binder.restoreCallingIdentity(ident); 1527 } 1528 } 1529 } 1530 1531 void systemReady() { 1532 loadGlobalProxy(); 1533 1534 synchronized(this) { 1535 mSystemReady = true; 1536 if (mInitialBroadcast != null) { 1537 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1538 mInitialBroadcast = null; 1539 } 1540 } 1541 // load the global proxy at startup 1542 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1543 1544 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1545 // for user to unlock device. 1546 if (!updateLockdownVpn()) { 1547 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1548 mContext.registerReceiver(mUserPresentReceiver, filter); 1549 } 1550 1551 // Configure whether mobile data is always on. 1552 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1553 1554 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1555 1556 mPermissionMonitor.startMonitoring(); 1557 } 1558 1559 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1560 @Override 1561 public void onReceive(Context context, Intent intent) { 1562 // Try creating lockdown tracker, since user present usually means 1563 // unlocked keystore. 1564 if (updateLockdownVpn()) { 1565 mContext.unregisterReceiver(this); 1566 } 1567 } 1568 }; 1569 1570 /** @hide */ 1571 @Override 1572 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1573 enforceConnectivityInternalPermission(); 1574 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1575// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1576 } 1577 1578 /** 1579 * Setup data activity tracking for the given network. 1580 * 1581 * Every {@code setupDataActivityTracking} should be paired with a 1582 * {@link #removeDataActivityTracking} for cleanup. 1583 */ 1584 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1585 final String iface = networkAgent.linkProperties.getInterfaceName(); 1586 1587 final int timeout; 1588 int type = ConnectivityManager.TYPE_NONE; 1589 1590 if (networkAgent.networkCapabilities.hasTransport( 1591 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1592 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1593 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1594 5); 1595 type = ConnectivityManager.TYPE_MOBILE; 1596 } else if (networkAgent.networkCapabilities.hasTransport( 1597 NetworkCapabilities.TRANSPORT_WIFI)) { 1598 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1599 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1600 5); 1601 type = ConnectivityManager.TYPE_WIFI; 1602 } else { 1603 // do not track any other networks 1604 timeout = 0; 1605 } 1606 1607 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1608 try { 1609 mNetd.addIdleTimer(iface, timeout, type); 1610 } catch (Exception e) { 1611 // You shall not crash! 1612 loge("Exception in setupDataActivityTracking " + e); 1613 } 1614 } 1615 } 1616 1617 /** 1618 * Remove data activity tracking when network disconnects. 1619 */ 1620 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1621 final String iface = networkAgent.linkProperties.getInterfaceName(); 1622 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1623 1624 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1625 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1626 try { 1627 // the call fails silently if no idletimer setup for this interface 1628 mNetd.removeIdleTimer(iface); 1629 } catch (Exception e) { 1630 loge("Exception in removeDataActivityTracking " + e); 1631 } 1632 } 1633 } 1634 1635 /** 1636 * Reads the network specific MTU size from reources. 1637 * and set it on it's iface. 1638 */ 1639 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1640 final String iface = newLp.getInterfaceName(); 1641 final int mtu = newLp.getMtu(); 1642 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1643 if (VDBG) log("identical MTU - not setting"); 1644 return; 1645 } 1646 1647 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1648 loge("Unexpected mtu value: " + mtu + ", " + iface); 1649 return; 1650 } 1651 1652 // Cannot set MTU without interface name 1653 if (TextUtils.isEmpty(iface)) { 1654 loge("Setting MTU size with null iface."); 1655 return; 1656 } 1657 1658 try { 1659 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1660 mNetd.setMtu(iface, mtu); 1661 } catch (Exception e) { 1662 Slog.e(TAG, "exception in setMtu()" + e); 1663 } 1664 } 1665 1666 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1667 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1668 1669 // Overridden for testing purposes to avoid writing to SystemProperties. 1670 @VisibleForTesting 1671 protected int getDefaultTcpRwnd() { 1672 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1673 } 1674 1675 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1676 if (isDefaultNetwork(nai) == false) { 1677 return; 1678 } 1679 1680 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1681 String[] values = null; 1682 if (tcpBufferSizes != null) { 1683 values = tcpBufferSizes.split(","); 1684 } 1685 1686 if (values == null || values.length != 6) { 1687 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1688 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1689 values = tcpBufferSizes.split(","); 1690 } 1691 1692 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1693 1694 try { 1695 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1696 1697 final String prefix = "/sys/kernel/ipv4/tcp_"; 1698 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1699 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1700 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1701 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1702 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1703 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1704 mCurrentTcpBufferSizes = tcpBufferSizes; 1705 } catch (IOException e) { 1706 loge("Can't set TCP buffer sizes:" + e); 1707 } 1708 1709 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1710 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1711 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1712 if (rwndValue != 0) { 1713 SystemProperties.set(sysctlKey, rwndValue.toString()); 1714 } 1715 } 1716 1717 private void flushVmDnsCache() { 1718 /* 1719 * Tell the VMs to toss their DNS caches 1720 */ 1721 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1722 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1723 /* 1724 * Connectivity events can happen before boot has completed ... 1725 */ 1726 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1727 final long ident = Binder.clearCallingIdentity(); 1728 try { 1729 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1730 } finally { 1731 Binder.restoreCallingIdentity(ident); 1732 } 1733 } 1734 1735 @Override 1736 public int getRestoreDefaultNetworkDelay(int networkType) { 1737 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1738 NETWORK_RESTORE_DELAY_PROP_NAME); 1739 if(restoreDefaultNetworkDelayStr != null && 1740 restoreDefaultNetworkDelayStr.length() != 0) { 1741 try { 1742 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1743 } catch (NumberFormatException e) { 1744 } 1745 } 1746 // if the system property isn't set, use the value for the apn type 1747 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1748 1749 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1750 (mNetConfigs[networkType] != null)) { 1751 ret = mNetConfigs[networkType].restoreTime; 1752 } 1753 return ret; 1754 } 1755 1756 private boolean shouldPerformDiagnostics(String[] args) { 1757 for (String arg : args) { 1758 if (arg.equals("--diag")) { 1759 return true; 1760 } 1761 } 1762 return false; 1763 } 1764 1765 @Override 1766 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1767 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1768 if (mContext.checkCallingOrSelfPermission( 1769 android.Manifest.permission.DUMP) 1770 != PackageManager.PERMISSION_GRANTED) { 1771 pw.println("Permission Denial: can't dump ConnectivityService " + 1772 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1773 Binder.getCallingUid()); 1774 return; 1775 } 1776 1777 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1778 if (shouldPerformDiagnostics(args)) { 1779 final long DIAG_TIME_MS = 5000; 1780 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1781 // Start gathering diagnostic information. 1782 netDiags.add(new NetworkDiagnostics( 1783 nai.network, 1784 new LinkProperties(nai.linkProperties), 1785 DIAG_TIME_MS)); 1786 } 1787 1788 for (NetworkDiagnostics netDiag : netDiags) { 1789 pw.println(); 1790 netDiag.waitForMeasurements(); 1791 netDiag.dump(pw); 1792 } 1793 1794 return; 1795 } 1796 1797 pw.print("NetworkFactories for:"); 1798 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1799 pw.print(" " + nfi.name); 1800 } 1801 pw.println(); 1802 pw.println(); 1803 1804 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1805 pw.print("Active default network: "); 1806 if (defaultNai == null) { 1807 pw.println("none"); 1808 } else { 1809 pw.println(defaultNai.network.netId); 1810 } 1811 pw.println(); 1812 1813 pw.println("Current Networks:"); 1814 pw.increaseIndent(); 1815 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1816 pw.println(nai.toString()); 1817 pw.increaseIndent(); 1818 pw.println("Requests:"); 1819 pw.increaseIndent(); 1820 for (int i = 0; i < nai.networkRequests.size(); i++) { 1821 pw.println(nai.networkRequests.valueAt(i).toString()); 1822 } 1823 pw.decreaseIndent(); 1824 pw.println("Lingered:"); 1825 pw.increaseIndent(); 1826 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1827 pw.decreaseIndent(); 1828 pw.decreaseIndent(); 1829 } 1830 pw.decreaseIndent(); 1831 pw.println(); 1832 1833 pw.println("Network Requests:"); 1834 pw.increaseIndent(); 1835 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1836 pw.println(nri.toString()); 1837 } 1838 pw.println(); 1839 pw.decreaseIndent(); 1840 1841 mLegacyTypeTracker.dump(pw); 1842 1843 synchronized (this) { 1844 pw.print("mNetTransitionWakeLock: currently " + 1845 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1846 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1847 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1848 } else { 1849 pw.println(", last requested never"); 1850 } 1851 } 1852 pw.println(); 1853 1854 mTethering.dump(fd, pw, args); 1855 1856 if (mInetLog != null && mInetLog.size() > 0) { 1857 pw.println(); 1858 pw.println("Inet condition reports:"); 1859 pw.increaseIndent(); 1860 for(int i = 0; i < mInetLog.size(); i++) { 1861 pw.println(mInetLog.get(i)); 1862 } 1863 pw.decreaseIndent(); 1864 } 1865 } 1866 1867 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1868 if (nai.network == null) return false; 1869 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1870 if (officialNai != null && officialNai.equals(nai)) return true; 1871 if (officialNai != null || VDBG) { 1872 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1873 " - " + nai); 1874 } 1875 return false; 1876 } 1877 1878 private boolean isRequest(NetworkRequest request) { 1879 return mNetworkRequests.get(request).isRequest; 1880 } 1881 1882 // must be stateless - things change under us. 1883 private class NetworkStateTrackerHandler extends Handler { 1884 public NetworkStateTrackerHandler(Looper looper) { 1885 super(looper); 1886 } 1887 1888 @Override 1889 public void handleMessage(Message msg) { 1890 NetworkInfo info; 1891 switch (msg.what) { 1892 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1893 handleAsyncChannelHalfConnect(msg); 1894 break; 1895 } 1896 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1897 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1898 if (nai != null) nai.asyncChannel.disconnect(); 1899 break; 1900 } 1901 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1902 handleAsyncChannelDisconnected(msg); 1903 break; 1904 } 1905 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1906 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1907 if (nai == null) { 1908 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1909 } else { 1910 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1911 } 1912 break; 1913 } 1914 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1915 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1916 if (nai == null) { 1917 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1918 } else { 1919 if (VDBG) { 1920 log("Update of LinkProperties for " + nai.name() + 1921 "; created=" + nai.created); 1922 } 1923 LinkProperties oldLp = nai.linkProperties; 1924 synchronized (nai) { 1925 nai.linkProperties = (LinkProperties)msg.obj; 1926 } 1927 if (nai.created) updateLinkProperties(nai, oldLp); 1928 } 1929 break; 1930 } 1931 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1932 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1933 if (nai == null) { 1934 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1935 break; 1936 } 1937 info = (NetworkInfo) msg.obj; 1938 updateNetworkInfo(nai, info); 1939 break; 1940 } 1941 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1942 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1943 if (nai == null) { 1944 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1945 break; 1946 } 1947 Integer score = (Integer) msg.obj; 1948 if (score != null) updateNetworkScore(nai, score.intValue()); 1949 break; 1950 } 1951 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1952 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1953 if (nai == null) { 1954 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1955 break; 1956 } 1957 try { 1958 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1959 } catch (Exception e) { 1960 // Never crash! 1961 loge("Exception in addVpnUidRanges: " + e); 1962 } 1963 break; 1964 } 1965 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1966 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1967 if (nai == null) { 1968 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1969 break; 1970 } 1971 try { 1972 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1973 } catch (Exception e) { 1974 // Never crash! 1975 loge("Exception in removeVpnUidRanges: " + e); 1976 } 1977 break; 1978 } 1979 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1980 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1981 if (nai == null) { 1982 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1983 break; 1984 } 1985 if (nai.created && !nai.networkMisc.explicitlySelected) { 1986 loge("ERROR: created network explicitly selected."); 1987 } 1988 nai.networkMisc.explicitlySelected = true; 1989 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 1990 break; 1991 } 1992 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1993 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1994 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_TESTED")) { 1995 final boolean valid = 1996 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1997 final boolean validationChanged = (valid != nai.lastValidated); 1998 nai.lastValidated = valid; 1999 if (valid) { 2000 if (DBG) log("Validated " + nai.name()); 2001 nai.networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 2002 if (!nai.everValidated) { 2003 nai.everValidated = true; 2004 rematchNetworkAndRequests(nai, NascentState.JUST_VALIDATED, 2005 ReapUnvalidatedNetworks.REAP); 2006 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2007 sendUpdatedScoreToFactories(nai); 2008 } 2009 } else { 2010 nai.networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 2011 } 2012 updateInetCondition(nai); 2013 // Let the NetworkAgent know the state of its network 2014 nai.asyncChannel.sendMessage( 2015 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2016 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2017 0, null); 2018 2019 if (validationChanged) { 2020 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 2021 } 2022 } 2023 break; 2024 } 2025 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2026 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2027 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 2028 handleLingerComplete(nai); 2029 } 2030 break; 2031 } 2032 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2033 final int netId = msg.arg2; 2034 if (msg.arg1 == 0) { 2035 setProvNotificationVisibleIntent(false, netId, null, 0, null, null); 2036 } else { 2037 final NetworkAgentInfo nai; 2038 synchronized (mNetworkForNetId) { 2039 nai = mNetworkForNetId.get(netId); 2040 } 2041 if (nai == null) { 2042 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2043 break; 2044 } 2045 nai.captivePortalDetected = true; 2046 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2047 nai.networkInfo.getType(),nai.networkInfo.getExtraInfo(), 2048 (PendingIntent)msg.obj); 2049 } 2050 break; 2051 } 2052 } 2053 } 2054 } 2055 2056 // Cancel any lingering so the linger timeout doesn't teardown a network. 2057 // This should be called when a network begins satisfying a NetworkRequest. 2058 // Note: depending on what state the NetworkMonitor is in (e.g., 2059 // if it's awaiting captive portal login, or if validation failed), this 2060 // may trigger a re-evaluation of the network. 2061 private void unlinger(NetworkAgentInfo nai) { 2062 if (VDBG) log("Canceling linger of " + nai.name()); 2063 // If network has never been validated, it cannot have been lingered, so don't bother 2064 // needlessly triggering a re-evaluation. 2065 if (!nai.everValidated) return; 2066 nai.networkLingered.clear(); 2067 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2068 } 2069 2070 private void handleAsyncChannelHalfConnect(Message msg) { 2071 AsyncChannel ac = (AsyncChannel) msg.obj; 2072 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2073 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2074 if (VDBG) log("NetworkFactory connected"); 2075 // A network factory has connected. Send it all current NetworkRequests. 2076 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2077 if (nri.isRequest == false) continue; 2078 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2079 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2080 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2081 } 2082 } else { 2083 loge("Error connecting NetworkFactory"); 2084 mNetworkFactoryInfos.remove(msg.obj); 2085 } 2086 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2087 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2088 if (VDBG) log("NetworkAgent connected"); 2089 // A network agent has requested a connection. Establish the connection. 2090 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2091 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2092 } else { 2093 loge("Error connecting NetworkAgent"); 2094 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2095 if (nai != null) { 2096 final boolean wasDefault = isDefaultNetwork(nai); 2097 synchronized (mNetworkForNetId) { 2098 mNetworkForNetId.remove(nai.network.netId); 2099 mNetIdInUse.delete(nai.network.netId); 2100 } 2101 // Just in case. 2102 mLegacyTypeTracker.remove(nai, wasDefault); 2103 } 2104 } 2105 } 2106 } 2107 2108 private void handleAsyncChannelDisconnected(Message msg) { 2109 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2110 if (nai != null) { 2111 if (DBG) { 2112 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2113 } 2114 // A network agent has disconnected. 2115 // TODO - if we move the logic to the network agent (have them disconnect 2116 // because they lost all their requests or because their score isn't good) 2117 // then they would disconnect organically, report their new state and then 2118 // disconnect the channel. 2119 if (nai.networkInfo.isConnected()) { 2120 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2121 null, null); 2122 } 2123 final boolean wasDefault = isDefaultNetwork(nai); 2124 if (wasDefault) { 2125 mDefaultInetConditionPublished = 0; 2126 } 2127 notifyIfacesChanged(); 2128 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2129 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2130 mNetworkAgentInfos.remove(msg.replyTo); 2131 updateClat(null, nai.linkProperties, nai); 2132 synchronized (mNetworkForNetId) { 2133 // Remove the NetworkAgent, but don't mark the netId as 2134 // available until we've told netd to delete it below. 2135 mNetworkForNetId.remove(nai.network.netId); 2136 } 2137 // Since we've lost the network, go through all the requests that 2138 // it was satisfying and see if any other factory can satisfy them. 2139 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2140 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2141 for (int i = 0; i < nai.networkRequests.size(); i++) { 2142 NetworkRequest request = nai.networkRequests.valueAt(i); 2143 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2144 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2145 if (DBG) { 2146 log("Checking for replacement network to handle request " + request ); 2147 } 2148 mNetworkForRequestId.remove(request.requestId); 2149 sendUpdatedScoreToFactories(request, 0); 2150 NetworkAgentInfo alternative = null; 2151 for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) { 2152 if (existing.satisfies(request) && 2153 (alternative == null || 2154 alternative.getCurrentScore() < existing.getCurrentScore())) { 2155 alternative = existing; 2156 } 2157 } 2158 if (alternative != null) { 2159 if (DBG) log(" found replacement in " + alternative.name()); 2160 if (!toActivate.contains(alternative)) { 2161 toActivate.add(alternative); 2162 } 2163 } 2164 } 2165 } 2166 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2167 removeDataActivityTracking(nai); 2168 notifyLockdownVpn(nai); 2169 requestNetworkTransitionWakelock(nai.name()); 2170 } 2171 mLegacyTypeTracker.remove(nai, wasDefault); 2172 for (NetworkAgentInfo networkToActivate : toActivate) { 2173 unlinger(networkToActivate); 2174 rematchNetworkAndRequests(networkToActivate, NascentState.NOT_JUST_VALIDATED, 2175 ReapUnvalidatedNetworks.DONT_REAP); 2176 } 2177 if (nai.created) { 2178 // Tell netd to clean up the configuration for this network 2179 // (routing rules, DNS, etc). 2180 // This may be slow as it requires a lot of netd shelling out to ip and 2181 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2182 // after we've rematched networks with requests which should make a potential 2183 // fallback network the default or requested a new network from the 2184 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2185 // long time. 2186 try { 2187 mNetd.removeNetwork(nai.network.netId); 2188 } catch (Exception e) { 2189 loge("Exception removing network: " + e); 2190 } 2191 } 2192 synchronized (mNetworkForNetId) { 2193 mNetIdInUse.delete(nai.network.netId); 2194 } 2195 } else { 2196 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2197 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2198 } 2199 } 2200 2201 // If this method proves to be too slow then we can maintain a separate 2202 // pendingIntent => NetworkRequestInfo map. 2203 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2204 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2205 Intent intent = pendingIntent.getIntent(); 2206 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2207 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2208 if (existingPendingIntent != null && 2209 existingPendingIntent.getIntent().filterEquals(intent)) { 2210 return entry.getValue(); 2211 } 2212 } 2213 return null; 2214 } 2215 2216 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2217 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2218 2219 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2220 if (existingRequest != null) { // remove the existing request. 2221 if (DBG) log("Replacing " + existingRequest.request + " with " 2222 + nri.request + " because their intents matched."); 2223 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2224 } 2225 handleRegisterNetworkRequest(nri); 2226 } 2227 2228 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2229 mNetworkRequests.put(nri.request, nri); 2230 2231 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2232 2233 // Check for the best currently alive network that satisfies this request 2234 NetworkAgentInfo bestNetwork = null; 2235 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2236 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2237 if (network.satisfies(nri.request)) { 2238 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2239 if (!nri.isRequest) { 2240 // Not setting bestNetwork here as a listening NetworkRequest may be 2241 // satisfied by multiple Networks. Instead the request is added to 2242 // each satisfying Network and notified about each. 2243 network.addRequest(nri.request); 2244 notifyNetworkCallback(network, nri); 2245 } else if (bestNetwork == null || 2246 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2247 bestNetwork = network; 2248 } 2249 } 2250 } 2251 if (bestNetwork != null) { 2252 if (DBG) log("using " + bestNetwork.name()); 2253 unlinger(bestNetwork); 2254 bestNetwork.addRequest(nri.request); 2255 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2256 notifyNetworkCallback(bestNetwork, nri); 2257 if (nri.request.legacyType != TYPE_NONE) { 2258 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2259 } 2260 } 2261 2262 if (nri.isRequest) { 2263 if (DBG) log("sending new NetworkRequest to factories"); 2264 final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore(); 2265 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2266 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2267 0, nri.request); 2268 } 2269 } 2270 } 2271 2272 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2273 int callingUid) { 2274 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2275 if (nri != null) { 2276 handleReleaseNetworkRequest(nri.request, callingUid); 2277 } 2278 } 2279 2280 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2281 // For validated Networks this is simply whether it is satsifying any NetworkRequests. 2282 // For unvalidated Networks this is whether it is satsifying any NetworkRequests or 2283 // were it to become validated, would it have a chance of satisfying any NetworkRequests. 2284 private boolean unneeded(NetworkAgentInfo nai) { 2285 if (!nai.created || nai.isVPN()) return false; 2286 boolean unneeded = true; 2287 if (nai.everValidated) { 2288 for (int i = 0; i < nai.networkRequests.size() && unneeded; i++) { 2289 final NetworkRequest nr = nai.networkRequests.valueAt(i); 2290 try { 2291 if (isRequest(nr)) unneeded = false; 2292 } catch (Exception e) { 2293 loge("Request " + nr + " not found in mNetworkRequests."); 2294 loge(" it came from request list of " + nai.name()); 2295 } 2296 } 2297 } else { 2298 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2299 // If this Network is already the highest scoring Network for a request, or if 2300 // there is hope for it to become one if it validated, then it is needed. 2301 if (nri.isRequest && nai.satisfies(nri.request) && 2302 (nai.networkRequests.get(nri.request.requestId) != null || 2303 // Note that this catches two important cases: 2304 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2305 // is currently satisfying the request. This is desirable when 2306 // cellular ends up validating but WiFi does not. 2307 // 2. Unvalidated WiFi will not be reaped when validated cellular 2308 // is currently satsifying the request. This is desirable when 2309 // WiFi ends up validating and out scoring cellular. 2310 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2311 nai.getCurrentScoreAsValidated())) { 2312 unneeded = false; 2313 break; 2314 } 2315 } 2316 } 2317 return unneeded; 2318 } 2319 2320 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2321 NetworkRequestInfo nri = mNetworkRequests.get(request); 2322 if (nri != null) { 2323 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2324 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2325 return; 2326 } 2327 if (DBG) log("releasing NetworkRequest " + request); 2328 nri.unlinkDeathRecipient(); 2329 mNetworkRequests.remove(request); 2330 if (nri.isRequest) { 2331 // Find all networks that are satisfying this request and remove the request 2332 // from their request lists. 2333 // TODO - it's my understanding that for a request there is only a single 2334 // network satisfying it, so this loop is wasteful 2335 boolean wasKept = false; 2336 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2337 if (nai.networkRequests.get(nri.request.requestId) != null) { 2338 nai.networkRequests.remove(nri.request.requestId); 2339 if (DBG) { 2340 log(" Removing from current network " + nai.name() + 2341 ", leaving " + nai.networkRequests.size() + 2342 " requests."); 2343 } 2344 if (unneeded(nai)) { 2345 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2346 teardownUnneededNetwork(nai); 2347 } else { 2348 // suspect there should only be one pass through here 2349 // but if any were kept do the check below 2350 wasKept |= true; 2351 } 2352 } 2353 } 2354 2355 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2356 if (nai != null) { 2357 mNetworkForRequestId.remove(nri.request.requestId); 2358 } 2359 // Maintain the illusion. When this request arrived, we might have pretended 2360 // that a network connected to serve it, even though the network was already 2361 // connected. Now that this request has gone away, we might have to pretend 2362 // that the network disconnected. LegacyTypeTracker will generate that 2363 // phantom disconnect for this type. 2364 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2365 boolean doRemove = true; 2366 if (wasKept) { 2367 // check if any of the remaining requests for this network are for the 2368 // same legacy type - if so, don't remove the nai 2369 for (int i = 0; i < nai.networkRequests.size(); i++) { 2370 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2371 if (otherRequest.legacyType == nri.request.legacyType && 2372 isRequest(otherRequest)) { 2373 if (DBG) log(" still have other legacy request - leaving"); 2374 doRemove = false; 2375 } 2376 } 2377 } 2378 2379 if (doRemove) { 2380 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2381 } 2382 } 2383 2384 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2385 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2386 nri.request); 2387 } 2388 } else { 2389 // listens don't have a singular affectedNetwork. Check all networks to see 2390 // if this listen request applies and remove it. 2391 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2392 nai.networkRequests.remove(nri.request.requestId); 2393 } 2394 } 2395 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2396 } 2397 } 2398 2399 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2400 enforceConnectivityInternalPermission(); 2401 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2402 accept ? 1 : 0, always ? 1: 0, network)); 2403 } 2404 2405 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2406 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2407 " accept=" + accept + " always=" + always); 2408 2409 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2410 if (nai == null) { 2411 // Nothing to do. 2412 return; 2413 } 2414 2415 if (nai.everValidated) { 2416 // The network validated while the dialog box was up. Take no action. 2417 return; 2418 } 2419 2420 if (!nai.networkMisc.explicitlySelected) { 2421 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2422 } 2423 2424 if (accept != nai.networkMisc.acceptUnvalidated) { 2425 int oldScore = nai.getCurrentScore(); 2426 nai.networkMisc.acceptUnvalidated = accept; 2427 rematchAllNetworksAndRequests(nai, oldScore); 2428 sendUpdatedScoreToFactories(nai); 2429 } 2430 2431 if (always) { 2432 nai.asyncChannel.sendMessage( 2433 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2434 } 2435 2436 if (!accept) { 2437 // Tell the NetworkAgent that the network does not have Internet access (because that's 2438 // what we just told the user). This will hint to Wi-Fi not to autojoin this network in 2439 // the future. We do this now because NetworkMonitor might not yet have finished 2440 // validating and thus we might not yet have received an EVENT_NETWORK_TESTED. 2441 nai.asyncChannel.sendMessage(NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2442 NetworkAgent.INVALID_NETWORK, 0, null); 2443 // TODO: Tear the network down once we have determined how to tell WifiStateMachine not 2444 // to reconnect to it immediately. http://b/20739299 2445 } 2446 2447 } 2448 2449 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2450 if (DBG) log("scheduleUnvalidatedPrompt " + nai.network); 2451 mHandler.sendMessageDelayed( 2452 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2453 PROMPT_UNVALIDATED_DELAY_MS); 2454 } 2455 2456 private void handlePromptUnvalidated(Network network) { 2457 if (DBG) log("handlePromptUnvalidated " + network); 2458 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2459 2460 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2461 // we haven't already been told to switch to it regardless of whether it validated or not. 2462 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2463 if (nai == null || nai.everValidated || nai.captivePortalDetected || 2464 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2465 return; 2466 } 2467 2468 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2469 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2470 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2471 intent.setClassName("com.android.settings", 2472 "com.android.settings.wifi.WifiNoInternetDialog"); 2473 2474 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2475 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2476 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2477 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent); 2478 } 2479 2480 private class InternalHandler extends Handler { 2481 public InternalHandler(Looper looper) { 2482 super(looper); 2483 } 2484 2485 @Override 2486 public void handleMessage(Message msg) { 2487 switch (msg.what) { 2488 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2489 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2490 String causedBy = null; 2491 synchronized (ConnectivityService.this) { 2492 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2493 mNetTransitionWakeLock.isHeld()) { 2494 mNetTransitionWakeLock.release(); 2495 causedBy = mNetTransitionWakeLockCausedBy; 2496 } else { 2497 break; 2498 } 2499 } 2500 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2501 log("Failed to find a new network - expiring NetTransition Wakelock"); 2502 } else { 2503 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2504 " cleared because we found a replacement network"); 2505 } 2506 break; 2507 } 2508 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2509 handleDeprecatedGlobalHttpProxy(); 2510 break; 2511 } 2512 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2513 Intent intent = (Intent)msg.obj; 2514 sendStickyBroadcast(intent); 2515 break; 2516 } 2517 case EVENT_PROXY_HAS_CHANGED: { 2518 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2519 break; 2520 } 2521 case EVENT_REGISTER_NETWORK_FACTORY: { 2522 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2523 break; 2524 } 2525 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2526 handleUnregisterNetworkFactory((Messenger)msg.obj); 2527 break; 2528 } 2529 case EVENT_REGISTER_NETWORK_AGENT: { 2530 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2531 break; 2532 } 2533 case EVENT_REGISTER_NETWORK_REQUEST: 2534 case EVENT_REGISTER_NETWORK_LISTENER: { 2535 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2536 break; 2537 } 2538 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: { 2539 handleRegisterNetworkRequestWithIntent(msg); 2540 break; 2541 } 2542 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2543 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2544 break; 2545 } 2546 case EVENT_RELEASE_NETWORK_REQUEST: { 2547 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2548 break; 2549 } 2550 case EVENT_SET_ACCEPT_UNVALIDATED: { 2551 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2552 break; 2553 } 2554 case EVENT_PROMPT_UNVALIDATED: { 2555 handlePromptUnvalidated((Network) msg.obj); 2556 break; 2557 } 2558 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2559 handleMobileDataAlwaysOn(); 2560 break; 2561 } 2562 case EVENT_SYSTEM_READY: { 2563 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2564 nai.networkMonitor.systemReady = true; 2565 } 2566 break; 2567 } 2568 } 2569 } 2570 } 2571 2572 // javadoc from interface 2573 public int tether(String iface) { 2574 ConnectivityManager.enforceTetherChangePermission(mContext); 2575 if (isTetheringSupported()) { 2576 return mTethering.tether(iface); 2577 } else { 2578 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2579 } 2580 } 2581 2582 // javadoc from interface 2583 public int untether(String iface) { 2584 ConnectivityManager.enforceTetherChangePermission(mContext); 2585 2586 if (isTetheringSupported()) { 2587 return mTethering.untether(iface); 2588 } else { 2589 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2590 } 2591 } 2592 2593 // javadoc from interface 2594 public int getLastTetherError(String iface) { 2595 enforceTetherAccessPermission(); 2596 2597 if (isTetheringSupported()) { 2598 return mTethering.getLastTetherError(iface); 2599 } else { 2600 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2601 } 2602 } 2603 2604 // TODO - proper iface API for selection by property, inspection, etc 2605 public String[] getTetherableUsbRegexs() { 2606 enforceTetherAccessPermission(); 2607 if (isTetheringSupported()) { 2608 return mTethering.getTetherableUsbRegexs(); 2609 } else { 2610 return new String[0]; 2611 } 2612 } 2613 2614 public String[] getTetherableWifiRegexs() { 2615 enforceTetherAccessPermission(); 2616 if (isTetheringSupported()) { 2617 return mTethering.getTetherableWifiRegexs(); 2618 } else { 2619 return new String[0]; 2620 } 2621 } 2622 2623 public String[] getTetherableBluetoothRegexs() { 2624 enforceTetherAccessPermission(); 2625 if (isTetheringSupported()) { 2626 return mTethering.getTetherableBluetoothRegexs(); 2627 } else { 2628 return new String[0]; 2629 } 2630 } 2631 2632 public int setUsbTethering(boolean enable) { 2633 ConnectivityManager.enforceTetherChangePermission(mContext); 2634 if (isTetheringSupported()) { 2635 return mTethering.setUsbTethering(enable); 2636 } else { 2637 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2638 } 2639 } 2640 2641 // TODO - move iface listing, queries, etc to new module 2642 // javadoc from interface 2643 public String[] getTetherableIfaces() { 2644 enforceTetherAccessPermission(); 2645 return mTethering.getTetherableIfaces(); 2646 } 2647 2648 public String[] getTetheredIfaces() { 2649 enforceTetherAccessPermission(); 2650 return mTethering.getTetheredIfaces(); 2651 } 2652 2653 public String[] getTetheringErroredIfaces() { 2654 enforceTetherAccessPermission(); 2655 return mTethering.getErroredIfaces(); 2656 } 2657 2658 public String[] getTetheredDhcpRanges() { 2659 enforceConnectivityInternalPermission(); 2660 return mTethering.getTetheredDhcpRanges(); 2661 } 2662 2663 // if ro.tether.denied = true we default to no tethering 2664 // gservices could set the secure setting to 1 though to enable it on a build where it 2665 // had previously been turned off. 2666 public boolean isTetheringSupported() { 2667 enforceTetherAccessPermission(); 2668 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2669 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2670 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2671 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2672 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2673 mTethering.getTetherableWifiRegexs().length != 0 || 2674 mTethering.getTetherableBluetoothRegexs().length != 0) && 2675 mTethering.getUpstreamIfaceTypes().length != 0); 2676 } 2677 2678 // Called when we lose the default network and have no replacement yet. 2679 // This will automatically be cleared after X seconds or a new default network 2680 // becomes CONNECTED, whichever happens first. The timer is started by the 2681 // first caller and not restarted by subsequent callers. 2682 private void requestNetworkTransitionWakelock(String forWhom) { 2683 int serialNum = 0; 2684 synchronized (this) { 2685 if (mNetTransitionWakeLock.isHeld()) return; 2686 serialNum = ++mNetTransitionWakeLockSerialNumber; 2687 mNetTransitionWakeLock.acquire(); 2688 mNetTransitionWakeLockCausedBy = forWhom; 2689 } 2690 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2691 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2692 mNetTransitionWakeLockTimeout); 2693 return; 2694 } 2695 2696 // 100 percent is full good, 0 is full bad. 2697 public void reportInetCondition(int networkType, int percentage) { 2698 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2699 if (nai == null) return; 2700 reportNetworkConnectivity(nai.network, percentage > 50); 2701 } 2702 2703 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2704 enforceAccessPermission(); 2705 enforceInternetPermission(); 2706 2707 NetworkAgentInfo nai; 2708 if (network == null) { 2709 nai = getDefaultNetwork(); 2710 } else { 2711 nai = getNetworkAgentInfoForNetwork(network); 2712 } 2713 if (nai == null) return; 2714 // Revalidate if the app report does not match our current validated state. 2715 if (hasConnectivity == nai.lastValidated) return; 2716 final int uid = Binder.getCallingUid(); 2717 if (DBG) { 2718 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2719 ") by " + uid); 2720 } 2721 synchronized (nai) { 2722 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2723 // which isn't meant to work on uncreated networks. 2724 if (!nai.created) return; 2725 2726 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2727 2728 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2729 } 2730 } 2731 2732 public void captivePortalAppResponse(Network network, int response, String actionToken) { 2733 if (response == ConnectivityManager.CAPTIVE_PORTAL_APP_RETURN_WANTED_AS_IS) { 2734 enforceConnectivityInternalPermission(); 2735 } 2736 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2737 if (nai == null) return; 2738 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_CAPTIVE_PORTAL_APP_FINISHED, response, 0, 2739 actionToken); 2740 } 2741 2742 private ProxyInfo getDefaultProxy() { 2743 // this information is already available as a world read/writable jvm property 2744 // so this API change wouldn't have a benifit. It also breaks the passing 2745 // of proxy info to all the JVMs. 2746 // enforceAccessPermission(); 2747 synchronized (mProxyLock) { 2748 ProxyInfo ret = mGlobalProxy; 2749 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2750 return ret; 2751 } 2752 } 2753 2754 public ProxyInfo getProxyForNetwork(Network network) { 2755 if (network == null) return getDefaultProxy(); 2756 final ProxyInfo globalProxy = getGlobalProxy(); 2757 if (globalProxy != null) return globalProxy; 2758 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2759 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2760 // caller may not have. 2761 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2762 if (nai == null) return null; 2763 synchronized (nai) { 2764 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2765 if (proxyInfo == null) return null; 2766 return new ProxyInfo(proxyInfo); 2767 } 2768 } 2769 2770 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2771 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2772 // proxy is null then there is no proxy in place). 2773 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2774 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2775 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2776 proxy = null; 2777 } 2778 return proxy; 2779 } 2780 2781 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2782 // better for determining if a new proxy broadcast is necessary: 2783 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2784 // avoid unnecessary broadcasts. 2785 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2786 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2787 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2788 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2789 // all set. 2790 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2791 a = canonicalizeProxyInfo(a); 2792 b = canonicalizeProxyInfo(b); 2793 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2794 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2795 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2796 } 2797 2798 public void setGlobalProxy(ProxyInfo proxyProperties) { 2799 enforceConnectivityInternalPermission(); 2800 2801 synchronized (mProxyLock) { 2802 if (proxyProperties == mGlobalProxy) return; 2803 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2804 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2805 2806 String host = ""; 2807 int port = 0; 2808 String exclList = ""; 2809 String pacFileUrl = ""; 2810 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2811 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2812 if (!proxyProperties.isValid()) { 2813 if (DBG) 2814 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2815 return; 2816 } 2817 mGlobalProxy = new ProxyInfo(proxyProperties); 2818 host = mGlobalProxy.getHost(); 2819 port = mGlobalProxy.getPort(); 2820 exclList = mGlobalProxy.getExclusionListAsString(); 2821 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2822 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2823 } 2824 } else { 2825 mGlobalProxy = null; 2826 } 2827 ContentResolver res = mContext.getContentResolver(); 2828 final long token = Binder.clearCallingIdentity(); 2829 try { 2830 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2831 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2832 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2833 exclList); 2834 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2835 } finally { 2836 Binder.restoreCallingIdentity(token); 2837 } 2838 2839 if (mGlobalProxy == null) { 2840 proxyProperties = mDefaultProxy; 2841 } 2842 sendProxyBroadcast(proxyProperties); 2843 } 2844 } 2845 2846 private void loadGlobalProxy() { 2847 ContentResolver res = mContext.getContentResolver(); 2848 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2849 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2850 String exclList = Settings.Global.getString(res, 2851 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2852 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2853 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2854 ProxyInfo proxyProperties; 2855 if (!TextUtils.isEmpty(pacFileUrl)) { 2856 proxyProperties = new ProxyInfo(pacFileUrl); 2857 } else { 2858 proxyProperties = new ProxyInfo(host, port, exclList); 2859 } 2860 if (!proxyProperties.isValid()) { 2861 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2862 return; 2863 } 2864 2865 synchronized (mProxyLock) { 2866 mGlobalProxy = proxyProperties; 2867 } 2868 } 2869 } 2870 2871 public ProxyInfo getGlobalProxy() { 2872 // this information is already available as a world read/writable jvm property 2873 // so this API change wouldn't have a benifit. It also breaks the passing 2874 // of proxy info to all the JVMs. 2875 // enforceAccessPermission(); 2876 synchronized (mProxyLock) { 2877 return mGlobalProxy; 2878 } 2879 } 2880 2881 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2882 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2883 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2884 proxy = null; 2885 } 2886 synchronized (mProxyLock) { 2887 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2888 if (mDefaultProxy == proxy) return; // catches repeated nulls 2889 if (proxy != null && !proxy.isValid()) { 2890 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2891 return; 2892 } 2893 2894 // This call could be coming from the PacManager, containing the port of the local 2895 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2896 // global (to get the correct local port), and send a broadcast. 2897 // TODO: Switch PacManager to have its own message to send back rather than 2898 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2899 if ((mGlobalProxy != null) && (proxy != null) 2900 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2901 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2902 mGlobalProxy = proxy; 2903 sendProxyBroadcast(mGlobalProxy); 2904 return; 2905 } 2906 mDefaultProxy = proxy; 2907 2908 if (mGlobalProxy != null) return; 2909 if (!mDefaultProxyDisabled) { 2910 sendProxyBroadcast(proxy); 2911 } 2912 } 2913 } 2914 2915 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2916 // This method gets called when any network changes proxy, but the broadcast only ever contains 2917 // the default proxy (even if it hasn't changed). 2918 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2919 // world where an app might be bound to a non-default network. 2920 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2921 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2922 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2923 2924 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2925 sendProxyBroadcast(getDefaultProxy()); 2926 } 2927 } 2928 2929 private void handleDeprecatedGlobalHttpProxy() { 2930 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2931 Settings.Global.HTTP_PROXY); 2932 if (!TextUtils.isEmpty(proxy)) { 2933 String data[] = proxy.split(":"); 2934 if (data.length == 0) { 2935 return; 2936 } 2937 2938 String proxyHost = data[0]; 2939 int proxyPort = 8080; 2940 if (data.length > 1) { 2941 try { 2942 proxyPort = Integer.parseInt(data[1]); 2943 } catch (NumberFormatException e) { 2944 return; 2945 } 2946 } 2947 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2948 setGlobalProxy(p); 2949 } 2950 } 2951 2952 private void sendProxyBroadcast(ProxyInfo proxy) { 2953 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2954 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2955 if (DBG) log("sending Proxy Broadcast for " + proxy); 2956 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2957 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2958 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2959 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2960 final long ident = Binder.clearCallingIdentity(); 2961 try { 2962 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2963 } finally { 2964 Binder.restoreCallingIdentity(ident); 2965 } 2966 } 2967 2968 private static class SettingsObserver extends ContentObserver { 2969 final private HashMap<Uri, Integer> mUriEventMap; 2970 final private Context mContext; 2971 final private Handler mHandler; 2972 2973 SettingsObserver(Context context, Handler handler) { 2974 super(null); 2975 mUriEventMap = new HashMap<Uri, Integer>(); 2976 mContext = context; 2977 mHandler = handler; 2978 } 2979 2980 void observe(Uri uri, int what) { 2981 mUriEventMap.put(uri, what); 2982 final ContentResolver resolver = mContext.getContentResolver(); 2983 resolver.registerContentObserver(uri, false, this); 2984 } 2985 2986 @Override 2987 public void onChange(boolean selfChange) { 2988 Slog.wtf(TAG, "Should never be reached."); 2989 } 2990 2991 @Override 2992 public void onChange(boolean selfChange, Uri uri) { 2993 final Integer what = mUriEventMap.get(uri); 2994 if (what != null) { 2995 mHandler.obtainMessage(what.intValue()).sendToTarget(); 2996 } else { 2997 loge("No matching event to send for URI=" + uri); 2998 } 2999 } 3000 } 3001 3002 private static void log(String s) { 3003 Slog.d(TAG, s); 3004 } 3005 3006 private static void loge(String s) { 3007 Slog.e(TAG, s); 3008 } 3009 3010 private static <T> T checkNotNull(T value, String message) { 3011 if (value == null) { 3012 throw new NullPointerException(message); 3013 } 3014 return value; 3015 } 3016 3017 /** 3018 * Prepare for a VPN application. 3019 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3020 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3021 * 3022 * @param oldPackage Package name of the application which currently controls VPN, which will 3023 * be replaced. If there is no such application, this should should either be 3024 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3025 * @param newPackage Package name of the application which should gain control of VPN, or 3026 * {@code null} to disable. 3027 * @param userId User for whom to prepare the new VPN. 3028 * 3029 * @hide 3030 */ 3031 @Override 3032 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3033 int userId) { 3034 enforceCrossUserPermission(userId); 3035 throwIfLockdownEnabled(); 3036 3037 synchronized(mVpns) { 3038 Vpn vpn = mVpns.get(userId); 3039 if (vpn != null) { 3040 return vpn.prepare(oldPackage, newPackage); 3041 } else { 3042 return false; 3043 } 3044 } 3045 } 3046 3047 /** 3048 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3049 * This method is used by system-privileged apps. 3050 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3051 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3052 * 3053 * @param packageName The package for which authorization state should change. 3054 * @param userId User for whom {@code packageName} is installed. 3055 * @param authorized {@code true} if this app should be able to start a VPN connection without 3056 * explicit user approval, {@code false} if not. 3057 * 3058 * @hide 3059 */ 3060 @Override 3061 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3062 enforceCrossUserPermission(userId); 3063 3064 synchronized(mVpns) { 3065 Vpn vpn = mVpns.get(userId); 3066 if (vpn != null) { 3067 vpn.setPackageAuthorization(packageName, authorized); 3068 } 3069 } 3070 } 3071 3072 /** 3073 * Configure a TUN interface and return its file descriptor. Parameters 3074 * are encoded and opaque to this class. This method is used by VpnBuilder 3075 * and not available in ConnectivityManager. Permissions are checked in 3076 * Vpn class. 3077 * @hide 3078 */ 3079 @Override 3080 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3081 throwIfLockdownEnabled(); 3082 int user = UserHandle.getUserId(Binder.getCallingUid()); 3083 synchronized(mVpns) { 3084 return mVpns.get(user).establish(config); 3085 } 3086 } 3087 3088 /** 3089 * Start legacy VPN, controlling native daemons as needed. Creates a 3090 * secondary thread to perform connection work, returning quickly. 3091 */ 3092 @Override 3093 public void startLegacyVpn(VpnProfile profile) { 3094 throwIfLockdownEnabled(); 3095 final LinkProperties egress = getActiveLinkProperties(); 3096 if (egress == null) { 3097 throw new IllegalStateException("Missing active network connection"); 3098 } 3099 int user = UserHandle.getUserId(Binder.getCallingUid()); 3100 synchronized(mVpns) { 3101 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3102 } 3103 } 3104 3105 /** 3106 * Return the information of the ongoing legacy VPN. This method is used 3107 * by VpnSettings and not available in ConnectivityManager. Permissions 3108 * are checked in Vpn class. 3109 */ 3110 @Override 3111 public LegacyVpnInfo getLegacyVpnInfo() { 3112 throwIfLockdownEnabled(); 3113 int user = UserHandle.getUserId(Binder.getCallingUid()); 3114 synchronized(mVpns) { 3115 return mVpns.get(user).getLegacyVpnInfo(); 3116 } 3117 } 3118 3119 /** 3120 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3121 * and not available in ConnectivityManager. 3122 */ 3123 @Override 3124 public VpnInfo[] getAllVpnInfo() { 3125 enforceConnectivityInternalPermission(); 3126 if (mLockdownEnabled) { 3127 return new VpnInfo[0]; 3128 } 3129 3130 synchronized(mVpns) { 3131 List<VpnInfo> infoList = new ArrayList<>(); 3132 for (int i = 0; i < mVpns.size(); i++) { 3133 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3134 if (info != null) { 3135 infoList.add(info); 3136 } 3137 } 3138 return infoList.toArray(new VpnInfo[infoList.size()]); 3139 } 3140 } 3141 3142 /** 3143 * @return VPN information for accounting, or null if we can't retrieve all required 3144 * information, e.g primary underlying iface. 3145 */ 3146 @Nullable 3147 private VpnInfo createVpnInfo(Vpn vpn) { 3148 VpnInfo info = vpn.getVpnInfo(); 3149 if (info == null) { 3150 return null; 3151 } 3152 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3153 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3154 // the underlyingNetworks list. 3155 if (underlyingNetworks == null) { 3156 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3157 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3158 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3159 } 3160 } else if (underlyingNetworks.length > 0) { 3161 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3162 if (linkProperties != null) { 3163 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3164 } 3165 } 3166 return info.primaryUnderlyingIface == null ? null : info; 3167 } 3168 3169 /** 3170 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3171 * VpnDialogs and not available in ConnectivityManager. 3172 * Permissions are checked in Vpn class. 3173 * @hide 3174 */ 3175 @Override 3176 public VpnConfig getVpnConfig(int userId) { 3177 enforceCrossUserPermission(userId); 3178 synchronized(mVpns) { 3179 Vpn vpn = mVpns.get(userId); 3180 if (vpn != null) { 3181 return vpn.getVpnConfig(); 3182 } else { 3183 return null; 3184 } 3185 } 3186 } 3187 3188 @Override 3189 public boolean updateLockdownVpn() { 3190 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3191 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3192 return false; 3193 } 3194 3195 // Tear down existing lockdown if profile was removed 3196 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3197 if (mLockdownEnabled) { 3198 if (!mKeyStore.isUnlocked()) { 3199 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3200 return false; 3201 } 3202 3203 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3204 final VpnProfile profile = VpnProfile.decode( 3205 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3206 int user = UserHandle.getUserId(Binder.getCallingUid()); 3207 synchronized(mVpns) { 3208 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3209 profile)); 3210 } 3211 } else { 3212 setLockdownTracker(null); 3213 } 3214 3215 return true; 3216 } 3217 3218 /** 3219 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3220 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3221 */ 3222 private void setLockdownTracker(LockdownVpnTracker tracker) { 3223 // Shutdown any existing tracker 3224 final LockdownVpnTracker existing = mLockdownTracker; 3225 mLockdownTracker = null; 3226 if (existing != null) { 3227 existing.shutdown(); 3228 } 3229 3230 try { 3231 if (tracker != null) { 3232 mNetd.setFirewallEnabled(true); 3233 mNetd.setFirewallInterfaceRule("lo", true); 3234 mLockdownTracker = tracker; 3235 mLockdownTracker.init(); 3236 } else { 3237 mNetd.setFirewallEnabled(false); 3238 } 3239 } catch (RemoteException e) { 3240 // ignored; NMS lives inside system_server 3241 } 3242 } 3243 3244 private void throwIfLockdownEnabled() { 3245 if (mLockdownEnabled) { 3246 throw new IllegalStateException("Unavailable in lockdown mode"); 3247 } 3248 } 3249 3250 @Override 3251 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3252 // TODO: Remove? Any reason to trigger a provisioning check? 3253 return -1; 3254 } 3255 3256 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3257 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3258 3259 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3260 if (DBG) { 3261 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3262 + " action=" + action); 3263 } 3264 Intent intent = new Intent(action); 3265 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3266 // Concatenate the range of types onto the range of NetIDs. 3267 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3268 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3269 networkType, null, pendingIntent); 3270 } 3271 3272 /** 3273 * Show or hide network provisioning notifications. 3274 * 3275 * We use notifications for two purposes: to notify that a network requires sign in 3276 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3277 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3278 * particular network we can display the notification type that was most recently requested. 3279 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3280 * might first display NO_INTERNET, and then when the captive portal check completes, display 3281 * SIGN_IN. 3282 * 3283 * @param id an identifier that uniquely identifies this notification. This must match 3284 * between show and hide calls. We use the NetID value but for legacy callers 3285 * we concatenate the range of types with the range of NetIDs. 3286 */ 3287 private void setProvNotificationVisibleIntent(boolean visible, int id, 3288 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent) { 3289 if (DBG) { 3290 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3291 + " networkType=" + getNetworkTypeName(networkType) 3292 + " extraInfo=" + extraInfo); 3293 } 3294 3295 Resources r = Resources.getSystem(); 3296 NotificationManager notificationManager = (NotificationManager) mContext 3297 .getSystemService(Context.NOTIFICATION_SERVICE); 3298 3299 if (visible) { 3300 CharSequence title; 3301 CharSequence details; 3302 int icon; 3303 Notification notification = new Notification(); 3304 if (notifyType == NotificationType.NO_INTERNET && 3305 networkType == ConnectivityManager.TYPE_WIFI) { 3306 title = r.getString(R.string.wifi_no_internet, 0); 3307 details = r.getString(R.string.wifi_no_internet_detailed); 3308 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3309 } else if (notifyType == NotificationType.SIGN_IN) { 3310 switch (networkType) { 3311 case ConnectivityManager.TYPE_WIFI: 3312 title = r.getString(R.string.wifi_available_sign_in, 0); 3313 details = r.getString(R.string.network_available_sign_in_detailed, 3314 extraInfo); 3315 icon = R.drawable.stat_notify_wifi_in_range; 3316 break; 3317 case ConnectivityManager.TYPE_MOBILE: 3318 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3319 title = r.getString(R.string.network_available_sign_in, 0); 3320 // TODO: Change this to pull from NetworkInfo once a printable 3321 // name has been added to it 3322 details = mTelephonyManager.getNetworkOperatorName(); 3323 icon = R.drawable.stat_notify_rssi_in_range; 3324 break; 3325 default: 3326 title = r.getString(R.string.network_available_sign_in, 0); 3327 details = r.getString(R.string.network_available_sign_in_detailed, 3328 extraInfo); 3329 icon = R.drawable.stat_notify_rssi_in_range; 3330 break; 3331 } 3332 } else { 3333 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3334 + getNetworkTypeName(networkType)); 3335 return; 3336 } 3337 3338 notification.when = 0; 3339 notification.icon = icon; 3340 notification.flags = Notification.FLAG_AUTO_CANCEL; 3341 notification.tickerText = title; 3342 notification.color = mContext.getColor( 3343 com.android.internal.R.color.system_notification_accent_color); 3344 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3345 notification.contentIntent = intent; 3346 3347 try { 3348 notificationManager.notify(NOTIFICATION_ID, id, notification); 3349 } catch (NullPointerException npe) { 3350 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3351 npe.printStackTrace(); 3352 } 3353 } else { 3354 try { 3355 notificationManager.cancel(NOTIFICATION_ID, id); 3356 } catch (NullPointerException npe) { 3357 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3358 npe.printStackTrace(); 3359 } 3360 } 3361 } 3362 3363 /** Location to an updatable file listing carrier provisioning urls. 3364 * An example: 3365 * 3366 * <?xml version="1.0" encoding="utf-8"?> 3367 * <provisioningUrls> 3368 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3369 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3370 * </provisioningUrls> 3371 */ 3372 private static final String PROVISIONING_URL_PATH = 3373 "/data/misc/radio/provisioning_urls.xml"; 3374 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3375 3376 /** XML tag for root element. */ 3377 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3378 /** XML tag for individual url */ 3379 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3380 /** XML tag for redirected url */ 3381 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3382 /** XML attribute for mcc */ 3383 private static final String ATTR_MCC = "mcc"; 3384 /** XML attribute for mnc */ 3385 private static final String ATTR_MNC = "mnc"; 3386 3387 private static final int REDIRECTED_PROVISIONING = 1; 3388 private static final int PROVISIONING = 2; 3389 3390 private String getProvisioningUrlBaseFromFile(int type) { 3391 FileReader fileReader = null; 3392 XmlPullParser parser = null; 3393 Configuration config = mContext.getResources().getConfiguration(); 3394 String tagType; 3395 3396 switch (type) { 3397 case PROVISIONING: 3398 tagType = TAG_PROVISIONING_URL; 3399 break; 3400 case REDIRECTED_PROVISIONING: 3401 tagType = TAG_REDIRECTED_URL; 3402 break; 3403 default: 3404 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3405 type); 3406 } 3407 3408 try { 3409 fileReader = new FileReader(mProvisioningUrlFile); 3410 parser = Xml.newPullParser(); 3411 parser.setInput(fileReader); 3412 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3413 3414 while (true) { 3415 XmlUtils.nextElement(parser); 3416 3417 String element = parser.getName(); 3418 if (element == null) break; 3419 3420 if (element.equals(tagType)) { 3421 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3422 try { 3423 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3424 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3425 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3426 parser.next(); 3427 if (parser.getEventType() == XmlPullParser.TEXT) { 3428 return parser.getText(); 3429 } 3430 } 3431 } 3432 } catch (NumberFormatException e) { 3433 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3434 } 3435 } 3436 } 3437 return null; 3438 } catch (FileNotFoundException e) { 3439 loge("Carrier Provisioning Urls file not found"); 3440 } catch (XmlPullParserException e) { 3441 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3442 } catch (IOException e) { 3443 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3444 } finally { 3445 if (fileReader != null) { 3446 try { 3447 fileReader.close(); 3448 } catch (IOException e) {} 3449 } 3450 } 3451 return null; 3452 } 3453 3454 @Override 3455 public String getMobileRedirectedProvisioningUrl() { 3456 enforceConnectivityInternalPermission(); 3457 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3458 if (TextUtils.isEmpty(url)) { 3459 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3460 } 3461 return url; 3462 } 3463 3464 @Override 3465 public String getMobileProvisioningUrl() { 3466 enforceConnectivityInternalPermission(); 3467 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3468 if (TextUtils.isEmpty(url)) { 3469 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3470 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3471 } else { 3472 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3473 } 3474 // populate the iccid, imei and phone number in the provisioning url. 3475 if (!TextUtils.isEmpty(url)) { 3476 String phoneNumber = mTelephonyManager.getLine1Number(); 3477 if (TextUtils.isEmpty(phoneNumber)) { 3478 phoneNumber = "0000000000"; 3479 } 3480 url = String.format(url, 3481 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3482 mTelephonyManager.getDeviceId() /* IMEI */, 3483 phoneNumber /* Phone numer */); 3484 } 3485 3486 return url; 3487 } 3488 3489 @Override 3490 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3491 String action) { 3492 enforceConnectivityInternalPermission(); 3493 final long ident = Binder.clearCallingIdentity(); 3494 try { 3495 setProvNotificationVisible(visible, networkType, action); 3496 } finally { 3497 Binder.restoreCallingIdentity(ident); 3498 } 3499 } 3500 3501 @Override 3502 public void setAirplaneMode(boolean enable) { 3503 enforceConnectivityInternalPermission(); 3504 final long ident = Binder.clearCallingIdentity(); 3505 try { 3506 final ContentResolver cr = mContext.getContentResolver(); 3507 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3508 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3509 intent.putExtra("state", enable); 3510 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3511 } finally { 3512 Binder.restoreCallingIdentity(ident); 3513 } 3514 } 3515 3516 private void onUserStart(int userId) { 3517 synchronized(mVpns) { 3518 Vpn userVpn = mVpns.get(userId); 3519 if (userVpn != null) { 3520 loge("Starting user already has a VPN"); 3521 return; 3522 } 3523 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3524 mVpns.put(userId, userVpn); 3525 } 3526 } 3527 3528 private void onUserStop(int userId) { 3529 synchronized(mVpns) { 3530 Vpn userVpn = mVpns.get(userId); 3531 if (userVpn == null) { 3532 loge("Stopping user has no VPN"); 3533 return; 3534 } 3535 mVpns.delete(userId); 3536 } 3537 } 3538 3539 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3540 @Override 3541 public void onReceive(Context context, Intent intent) { 3542 final String action = intent.getAction(); 3543 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3544 if (userId == UserHandle.USER_NULL) return; 3545 3546 if (Intent.ACTION_USER_STARTING.equals(action)) { 3547 onUserStart(userId); 3548 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3549 onUserStop(userId); 3550 } 3551 } 3552 }; 3553 3554 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3555 new HashMap<Messenger, NetworkFactoryInfo>(); 3556 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3557 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3558 3559 private static class NetworkFactoryInfo { 3560 public final String name; 3561 public final Messenger messenger; 3562 public final AsyncChannel asyncChannel; 3563 3564 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3565 this.name = name; 3566 this.messenger = messenger; 3567 this.asyncChannel = asyncChannel; 3568 } 3569 } 3570 3571 /** 3572 * Tracks info about the requester. 3573 * Also used to notice when the calling process dies so we can self-expire 3574 */ 3575 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3576 static final boolean REQUEST = true; 3577 static final boolean LISTEN = false; 3578 3579 final NetworkRequest request; 3580 final PendingIntent mPendingIntent; 3581 boolean mPendingIntentSent; 3582 private final IBinder mBinder; 3583 final int mPid; 3584 final int mUid; 3585 final Messenger messenger; 3586 final boolean isRequest; 3587 3588 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3589 request = r; 3590 mPendingIntent = pi; 3591 messenger = null; 3592 mBinder = null; 3593 mPid = getCallingPid(); 3594 mUid = getCallingUid(); 3595 this.isRequest = isRequest; 3596 } 3597 3598 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3599 super(); 3600 messenger = m; 3601 request = r; 3602 mBinder = binder; 3603 mPid = getCallingPid(); 3604 mUid = getCallingUid(); 3605 this.isRequest = isRequest; 3606 mPendingIntent = null; 3607 3608 try { 3609 mBinder.linkToDeath(this, 0); 3610 } catch (RemoteException e) { 3611 binderDied(); 3612 } 3613 } 3614 3615 void unlinkDeathRecipient() { 3616 if (mBinder != null) { 3617 mBinder.unlinkToDeath(this, 0); 3618 } 3619 } 3620 3621 public void binderDied() { 3622 log("ConnectivityService NetworkRequestInfo binderDied(" + 3623 request + ", " + mBinder + ")"); 3624 releaseNetworkRequest(request); 3625 } 3626 3627 public String toString() { 3628 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3629 mPid + " for " + request + 3630 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3631 } 3632 } 3633 3634 @Override 3635 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3636 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3637 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3638 enforceNetworkRequestPermissions(networkCapabilities); 3639 enforceMeteredApnPolicy(networkCapabilities); 3640 3641 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3642 throw new IllegalArgumentException("Bad timeout specified"); 3643 } 3644 3645 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3646 nextNetworkRequestId()); 3647 if (DBG) log("requestNetwork for " + networkRequest); 3648 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3649 NetworkRequestInfo.REQUEST); 3650 3651 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3652 if (timeoutMs > 0) { 3653 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3654 nri), timeoutMs); 3655 } 3656 return networkRequest; 3657 } 3658 3659 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3660 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3661 enforceConnectivityInternalPermission(); 3662 } else { 3663 enforceChangePermission(); 3664 } 3665 } 3666 3667 @Override 3668 public boolean requestBandwidthUpdate(Network network) { 3669 enforceAccessPermission(); 3670 NetworkAgentInfo nai = null; 3671 if (network == null) { 3672 return false; 3673 } 3674 synchronized (mNetworkForNetId) { 3675 nai = mNetworkForNetId.get(network.netId); 3676 } 3677 if (nai != null) { 3678 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3679 return true; 3680 } 3681 return false; 3682 } 3683 3684 3685 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3686 // if UID is restricted, don't allow them to bring up metered APNs 3687 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3688 final int uidRules; 3689 final int uid = Binder.getCallingUid(); 3690 synchronized(mRulesLock) { 3691 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3692 } 3693 if ((uidRules & (RULE_REJECT_METERED | RULE_REJECT_ALL)) != 0) { 3694 // we could silently fail or we can filter the available nets to only give 3695 // them those they have access to. Chose the more useful 3696 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3697 } 3698 } 3699 } 3700 3701 @Override 3702 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3703 PendingIntent operation) { 3704 checkNotNull(operation, "PendingIntent cannot be null."); 3705 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3706 enforceNetworkRequestPermissions(networkCapabilities); 3707 enforceMeteredApnPolicy(networkCapabilities); 3708 3709 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3710 nextNetworkRequestId()); 3711 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3712 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3713 NetworkRequestInfo.REQUEST); 3714 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3715 nri)); 3716 return networkRequest; 3717 } 3718 3719 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3720 mHandler.sendMessageDelayed( 3721 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3722 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3723 } 3724 3725 @Override 3726 public void releasePendingNetworkRequest(PendingIntent operation) { 3727 checkNotNull(operation, "PendingIntent cannot be null."); 3728 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3729 getCallingUid(), 0, operation)); 3730 } 3731 3732 // In order to implement the compatibility measure for pre-M apps that call 3733 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3734 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3735 // This ensures it has permission to do so. 3736 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3737 if (nc == null) { 3738 return false; 3739 } 3740 int[] transportTypes = nc.getTransportTypes(); 3741 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3742 return false; 3743 } 3744 try { 3745 mContext.enforceCallingOrSelfPermission( 3746 android.Manifest.permission.ACCESS_WIFI_STATE, 3747 "ConnectivityService"); 3748 } catch (SecurityException e) { 3749 return false; 3750 } 3751 return true; 3752 } 3753 3754 @Override 3755 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3756 Messenger messenger, IBinder binder) { 3757 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3758 enforceAccessPermission(); 3759 } 3760 3761 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3762 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3763 if (DBG) log("listenForNetwork for " + networkRequest); 3764 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3765 NetworkRequestInfo.LISTEN); 3766 3767 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3768 return networkRequest; 3769 } 3770 3771 @Override 3772 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3773 PendingIntent operation) { 3774 } 3775 3776 @Override 3777 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3778 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3779 0, networkRequest)); 3780 } 3781 3782 @Override 3783 public void registerNetworkFactory(Messenger messenger, String name) { 3784 enforceConnectivityInternalPermission(); 3785 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3786 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3787 } 3788 3789 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3790 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3791 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3792 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3793 } 3794 3795 @Override 3796 public void unregisterNetworkFactory(Messenger messenger) { 3797 enforceConnectivityInternalPermission(); 3798 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3799 } 3800 3801 private void handleUnregisterNetworkFactory(Messenger messenger) { 3802 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3803 if (nfi == null) { 3804 loge("Failed to find Messenger in unregisterNetworkFactory"); 3805 return; 3806 } 3807 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3808 } 3809 3810 /** 3811 * NetworkAgentInfo supporting a request by requestId. 3812 * These have already been vetted (their Capabilities satisfy the request) 3813 * and the are the highest scored network available. 3814 * the are keyed off the Requests requestId. 3815 */ 3816 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 3817 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3818 new SparseArray<NetworkAgentInfo>(); 3819 3820 // NOTE: Accessed on multiple threads, must be synchronized on itself. 3821 @GuardedBy("mNetworkForNetId") 3822 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3823 new SparseArray<NetworkAgentInfo>(); 3824 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 3825 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 3826 // there may not be a strict 1:1 correlation between the two. 3827 @GuardedBy("mNetworkForNetId") 3828 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 3829 3830 // NetworkAgentInfo keyed off its connecting messenger 3831 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3832 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 3833 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3834 new HashMap<Messenger, NetworkAgentInfo>(); 3835 3836 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3837 private final NetworkRequest mDefaultRequest; 3838 3839 // Request used to optionally keep mobile data active even when higher 3840 // priority networks like Wi-Fi are active. 3841 private final NetworkRequest mDefaultMobileDataRequest; 3842 3843 private NetworkAgentInfo getDefaultNetwork() { 3844 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3845 } 3846 3847 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3848 return nai == getDefaultNetwork(); 3849 } 3850 3851 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3852 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3853 int currentScore, NetworkMisc networkMisc) { 3854 enforceConnectivityInternalPermission(); 3855 3856 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3857 // satisfies mDefaultRequest. 3858 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3859 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 3860 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 3861 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest); 3862 synchronized (this) { 3863 nai.networkMonitor.systemReady = mSystemReady; 3864 } 3865 if (DBG) log("registerNetworkAgent " + nai); 3866 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3867 return nai.network.netId; 3868 } 3869 3870 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3871 if (VDBG) log("Got NetworkAgent Messenger"); 3872 mNetworkAgentInfos.put(na.messenger, na); 3873 synchronized (mNetworkForNetId) { 3874 mNetworkForNetId.put(na.network.netId, na); 3875 } 3876 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3877 NetworkInfo networkInfo = na.networkInfo; 3878 na.networkInfo = null; 3879 updateNetworkInfo(na, networkInfo); 3880 } 3881 3882 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3883 LinkProperties newLp = networkAgent.linkProperties; 3884 int netId = networkAgent.network.netId; 3885 3886 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3887 // we do anything else, make sure its LinkProperties are accurate. 3888 if (networkAgent.clatd != null) { 3889 networkAgent.clatd.fixupLinkProperties(oldLp); 3890 } 3891 3892 updateInterfaces(newLp, oldLp, netId); 3893 updateMtu(newLp, oldLp); 3894 // TODO - figure out what to do for clat 3895// for (LinkProperties lp : newLp.getStackedLinks()) { 3896// updateMtu(lp, null); 3897// } 3898 updateTcpBufferSizes(networkAgent); 3899 3900 // TODO: deprecate and remove mDefaultDns when we can do so safely. See http://b/18327075 3901 // In L, we used it only when the network had Internet access but provided no DNS servers. 3902 // For now, just disable it, and if disabling it doesn't break things, remove it. 3903 // final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3904 // NET_CAPABILITY_INTERNET); 3905 final boolean useDefaultDns = false; 3906 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3907 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3908 3909 updateClat(newLp, oldLp, networkAgent); 3910 if (isDefaultNetwork(networkAgent)) { 3911 handleApplyDefaultProxy(newLp.getHttpProxy()); 3912 } else { 3913 updateProxy(newLp, oldLp, networkAgent); 3914 } 3915 // TODO - move this check to cover the whole function 3916 if (!Objects.equals(newLp, oldLp)) { 3917 notifyIfacesChanged(); 3918 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3919 } 3920 } 3921 3922 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3923 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3924 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3925 3926 if (!wasRunningClat && shouldRunClat) { 3927 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3928 nai.clatd.start(); 3929 } else if (wasRunningClat && !shouldRunClat) { 3930 nai.clatd.stop(); 3931 } 3932 } 3933 3934 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3935 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3936 if (oldLp != null) { 3937 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3938 } else if (newLp != null) { 3939 interfaceDiff.added = newLp.getAllInterfaceNames(); 3940 } 3941 for (String iface : interfaceDiff.added) { 3942 try { 3943 if (DBG) log("Adding iface " + iface + " to network " + netId); 3944 mNetd.addInterfaceToNetwork(iface, netId); 3945 } catch (Exception e) { 3946 loge("Exception adding interface: " + e); 3947 } 3948 } 3949 for (String iface : interfaceDiff.removed) { 3950 try { 3951 if (DBG) log("Removing iface " + iface + " from network " + netId); 3952 mNetd.removeInterfaceFromNetwork(iface, netId); 3953 } catch (Exception e) { 3954 loge("Exception removing interface: " + e); 3955 } 3956 } 3957 } 3958 3959 /** 3960 * Have netd update routes from oldLp to newLp. 3961 * @return true if routes changed between oldLp and newLp 3962 */ 3963 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3964 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3965 if (oldLp != null) { 3966 routeDiff = oldLp.compareAllRoutes(newLp); 3967 } else if (newLp != null) { 3968 routeDiff.added = newLp.getAllRoutes(); 3969 } 3970 3971 // add routes before removing old in case it helps with continuous connectivity 3972 3973 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3974 for (RouteInfo route : routeDiff.added) { 3975 if (route.hasGateway()) continue; 3976 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3977 try { 3978 mNetd.addRoute(netId, route); 3979 } catch (Exception e) { 3980 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3981 loge("Exception in addRoute for non-gateway: " + e); 3982 } 3983 } 3984 } 3985 for (RouteInfo route : routeDiff.added) { 3986 if (route.hasGateway() == false) continue; 3987 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3988 try { 3989 mNetd.addRoute(netId, route); 3990 } catch (Exception e) { 3991 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3992 loge("Exception in addRoute for gateway: " + e); 3993 } 3994 } 3995 } 3996 3997 for (RouteInfo route : routeDiff.removed) { 3998 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3999 try { 4000 mNetd.removeRoute(netId, route); 4001 } catch (Exception e) { 4002 loge("Exception in removeRoute: " + e); 4003 } 4004 } 4005 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4006 } 4007 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 4008 boolean flush, boolean useDefaultDns) { 4009 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 4010 Collection<InetAddress> dnses = newLp.getDnsServers(); 4011 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 4012 dnses = new ArrayList(); 4013 dnses.add(mDefaultDns); 4014 if (DBG) { 4015 loge("no dns provided for netId " + netId + ", so using defaults"); 4016 } 4017 } 4018 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 4019 try { 4020 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 4021 newLp.getDomains()); 4022 } catch (Exception e) { 4023 loge("Exception in setDnsServersForNetwork: " + e); 4024 } 4025 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 4026 if (defaultNai != null && defaultNai.network.netId == netId) { 4027 setDefaultDnsSystemProperties(dnses); 4028 } 4029 flushVmDnsCache(); 4030 } else if (flush) { 4031 try { 4032 mNetd.flushNetworkDnsCache(netId); 4033 } catch (Exception e) { 4034 loge("Exception in flushNetworkDnsCache: " + e); 4035 } 4036 flushVmDnsCache(); 4037 } 4038 } 4039 4040 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4041 int last = 0; 4042 for (InetAddress dns : dnses) { 4043 ++last; 4044 String key = "net.dns" + last; 4045 String value = dns.getHostAddress(); 4046 SystemProperties.set(key, value); 4047 } 4048 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4049 String key = "net.dns" + i; 4050 SystemProperties.set(key, ""); 4051 } 4052 mNumDnsEntries = last; 4053 } 4054 4055 private void updateCapabilities(NetworkAgentInfo networkAgent, 4056 NetworkCapabilities networkCapabilities) { 4057 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 4058 synchronized (networkAgent) { 4059 networkAgent.networkCapabilities = networkCapabilities; 4060 } 4061 if (networkAgent.lastValidated) { 4062 networkAgent.networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4063 // There's no need to remove the capability if we think the network is unvalidated, 4064 // because NetworkAgents don't set the validated capability. 4065 } 4066 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 4067 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 4068 } 4069 } 4070 4071 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4072 for (int i = 0; i < nai.networkRequests.size(); i++) { 4073 NetworkRequest nr = nai.networkRequests.valueAt(i); 4074 // Don't send listening requests to factories. b/17393458 4075 if (!isRequest(nr)) continue; 4076 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4077 } 4078 } 4079 4080 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4081 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4082 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4083 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4084 networkRequest); 4085 } 4086 } 4087 4088 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4089 int notificationType) { 4090 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4091 Intent intent = new Intent(); 4092 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4093 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4094 nri.mPendingIntentSent = true; 4095 sendIntent(nri.mPendingIntent, intent); 4096 } 4097 // else not handled 4098 } 4099 4100 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4101 mPendingIntentWakeLock.acquire(); 4102 try { 4103 if (DBG) log("Sending " + pendingIntent); 4104 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4105 } catch (PendingIntent.CanceledException e) { 4106 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4107 mPendingIntentWakeLock.release(); 4108 releasePendingNetworkRequest(pendingIntent); 4109 } 4110 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4111 } 4112 4113 @Override 4114 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4115 String resultData, Bundle resultExtras) { 4116 if (DBG) log("Finished sending " + pendingIntent); 4117 mPendingIntentWakeLock.release(); 4118 // Release with a delay so the receiving client has an opportunity to put in its 4119 // own request. 4120 releasePendingNetworkRequestWithDelay(pendingIntent); 4121 } 4122 4123 private void callCallbackForRequest(NetworkRequestInfo nri, 4124 NetworkAgentInfo networkAgent, int notificationType) { 4125 if (nri.messenger == null) return; // Default request has no msgr 4126 Bundle bundle = new Bundle(); 4127 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4128 new NetworkRequest(nri.request)); 4129 Message msg = Message.obtain(); 4130 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4131 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4132 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4133 } 4134 switch (notificationType) { 4135 case ConnectivityManager.CALLBACK_LOSING: { 4136 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4137 break; 4138 } 4139 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4140 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4141 new NetworkCapabilities(networkAgent.networkCapabilities)); 4142 break; 4143 } 4144 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4145 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4146 new LinkProperties(networkAgent.linkProperties)); 4147 break; 4148 } 4149 } 4150 msg.what = notificationType; 4151 msg.setData(bundle); 4152 try { 4153 if (VDBG) { 4154 log("sending notification " + notifyTypeToName(notificationType) + 4155 " for " + nri.request); 4156 } 4157 nri.messenger.send(msg); 4158 } catch (RemoteException e) { 4159 // may occur naturally in the race of binder death. 4160 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4161 } 4162 } 4163 4164 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4165 for (int i = 0; i < nai.networkRequests.size(); i++) { 4166 NetworkRequest nr = nai.networkRequests.valueAt(i); 4167 // Ignore listening requests. 4168 if (!isRequest(nr)) continue; 4169 loge("Dead network still had at least " + nr); 4170 break; 4171 } 4172 nai.asyncChannel.disconnect(); 4173 } 4174 4175 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4176 if (oldNetwork == null) { 4177 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4178 return; 4179 } 4180 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4181 teardownUnneededNetwork(oldNetwork); 4182 } 4183 4184 private void makeDefault(NetworkAgentInfo newNetwork) { 4185 if (DBG) log("Switching to new default network: " + newNetwork); 4186 setupDataActivityTracking(newNetwork); 4187 try { 4188 mNetd.setDefaultNetId(newNetwork.network.netId); 4189 } catch (Exception e) { 4190 loge("Exception setting default network :" + e); 4191 } 4192 notifyLockdownVpn(newNetwork); 4193 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4194 updateTcpBufferSizes(newNetwork); 4195 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4196 } 4197 4198 // Handles a network appearing or improving its score. 4199 // 4200 // - Evaluates all current NetworkRequests that can be 4201 // satisfied by newNetwork, and reassigns to newNetwork 4202 // any such requests for which newNetwork is the best. 4203 // 4204 // - Lingers any validated Networks that as a result are no longer 4205 // needed. A network is needed if it is the best network for 4206 // one or more NetworkRequests, or if it is a VPN. 4207 // 4208 // - Tears down newNetwork if it just became validated 4209 // (i.e. nascent==JUST_VALIDATED) but turns out to be unneeded. 4210 // 4211 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4212 // networks that have no chance (i.e. even if validated) 4213 // of becoming the highest scoring network. 4214 // 4215 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4216 // it does not remove NetworkRequests that other Networks could better satisfy. 4217 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4218 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4219 // as it performs better by a factor of the number of Networks. 4220 // 4221 // @param newNetwork is the network to be matched against NetworkRequests. 4222 // @param nascent indicates if newNetwork just became validated, in which case it should be 4223 // torn down if unneeded. 4224 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4225 // performed to tear down unvalidated networks that have no chance (i.e. even if 4226 // validated) of becoming the highest scoring network. 4227 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, NascentState nascent, 4228 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4229 if (!newNetwork.created) return; 4230 if (nascent == NascentState.JUST_VALIDATED && !newNetwork.everValidated) { 4231 loge("ERROR: nascent network not validated."); 4232 } 4233 boolean keep = newNetwork.isVPN(); 4234 boolean isNewDefault = false; 4235 NetworkAgentInfo oldDefaultNetwork = null; 4236 if (DBG) log("rematching " + newNetwork.name()); 4237 // Find and migrate to this Network any NetworkRequests for 4238 // which this network is now the best. 4239 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4240 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4241 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4242 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4243 if (newNetwork == currentNetwork) { 4244 if (DBG) { 4245 log("Network " + newNetwork.name() + " was already satisfying" + 4246 " request " + nri.request.requestId + ". No change."); 4247 } 4248 keep = true; 4249 continue; 4250 } 4251 4252 // check if it satisfies the NetworkCapabilities 4253 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4254 if (newNetwork.satisfies(nri.request)) { 4255 if (!nri.isRequest) { 4256 // This is not a request, it's a callback listener. 4257 // Add it to newNetwork regardless of score. 4258 newNetwork.addRequest(nri.request); 4259 continue; 4260 } 4261 4262 // next check if it's better than any current network we're using for 4263 // this request 4264 if (VDBG) { 4265 log("currentScore = " + 4266 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4267 ", newScore = " + newNetwork.getCurrentScore()); 4268 } 4269 if (currentNetwork == null || 4270 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4271 if (currentNetwork != null) { 4272 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4273 currentNetwork.networkRequests.remove(nri.request.requestId); 4274 currentNetwork.networkLingered.add(nri.request); 4275 affectedNetworks.add(currentNetwork); 4276 } else { 4277 if (DBG) log(" accepting network in place of null"); 4278 } 4279 unlinger(newNetwork); 4280 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4281 newNetwork.addRequest(nri.request); 4282 keep = true; 4283 // Tell NetworkFactories about the new score, so they can stop 4284 // trying to connect if they know they cannot match it. 4285 // TODO - this could get expensive if we have alot of requests for this 4286 // network. Think about if there is a way to reduce this. Push 4287 // netid->request mapping to each factory? 4288 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4289 if (mDefaultRequest.requestId == nri.request.requestId) { 4290 isNewDefault = true; 4291 oldDefaultNetwork = currentNetwork; 4292 } 4293 } 4294 } 4295 } 4296 // Linger any networks that are no longer needed. 4297 for (NetworkAgentInfo nai : affectedNetworks) { 4298 if (nai.everValidated && unneeded(nai)) { 4299 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4300 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4301 } else { 4302 unlinger(nai); 4303 } 4304 } 4305 if (keep) { 4306 if (isNewDefault) { 4307 // Notify system services that this network is up. 4308 makeDefault(newNetwork); 4309 synchronized (ConnectivityService.this) { 4310 // have a new default network, release the transition wakelock in 4311 // a second if it's held. The second pause is to allow apps 4312 // to reconnect over the new network 4313 if (mNetTransitionWakeLock.isHeld()) { 4314 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4315 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4316 mNetTransitionWakeLockSerialNumber, 0), 4317 1000); 4318 } 4319 } 4320 } 4321 4322 // do this after the default net is switched, but 4323 // before LegacyTypeTracker sends legacy broadcasts 4324 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4325 4326 if (isNewDefault) { 4327 // Maintain the illusion: since the legacy API only 4328 // understands one network at a time, we must pretend 4329 // that the current default network disconnected before 4330 // the new one connected. 4331 if (oldDefaultNetwork != null) { 4332 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4333 oldDefaultNetwork, true); 4334 } 4335 mDefaultInetConditionPublished = newNetwork.everValidated ? 100 : 0; 4336 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4337 notifyLockdownVpn(newNetwork); 4338 } 4339 4340 // Notify battery stats service about this network, both the normal 4341 // interface and any stacked links. 4342 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4343 try { 4344 final IBatteryStats bs = BatteryStatsService.getService(); 4345 final int type = newNetwork.networkInfo.getType(); 4346 4347 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4348 bs.noteNetworkInterfaceType(baseIface, type); 4349 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4350 final String stackedIface = stacked.getInterfaceName(); 4351 bs.noteNetworkInterfaceType(stackedIface, type); 4352 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4353 } 4354 } catch (RemoteException ignored) { 4355 } 4356 4357 // This has to happen after the notifyNetworkCallbacks as that tickles each 4358 // ConnectivityManager instance so that legacy requests correctly bind dns 4359 // requests to this network. The legacy users are listening for this bcast 4360 // and will generally do a dns request so they can ensureRouteToHost and if 4361 // they do that before the callbacks happen they'll use the default network. 4362 // 4363 // TODO: Is there still a race here? We send the broadcast 4364 // after sending the callback, but if the app can receive the 4365 // broadcast before the callback, it might still break. 4366 // 4367 // This *does* introduce a race where if the user uses the new api 4368 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4369 // they may get old info. Reverse this after the old startUsing api is removed. 4370 // This is on top of the multiple intent sequencing referenced in the todo above. 4371 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4372 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4373 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4374 // legacy type tracker filters out repeat adds 4375 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4376 } 4377 } 4378 4379 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4380 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4381 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4382 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4383 if (newNetwork.isVPN()) { 4384 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4385 } 4386 } else if (nascent == NascentState.JUST_VALIDATED) { 4387 // Only tear down newly validated networks here. Leave unvalidated to either become 4388 // validated (and get evaluated against peers, one losing here), or get reaped (see 4389 // reapUnvalidatedNetworks) if they have no chance of becoming the highest scoring 4390 // network. Networks that have been up for a while and are validated should be torn 4391 // down via the lingering process so communication on that network is given time to 4392 // wrap up. 4393 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4394 teardownUnneededNetwork(newNetwork); 4395 } 4396 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4397 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4398 if (!nai.everValidated && unneeded(nai)) { 4399 if (DBG) log("Reaping " + nai.name()); 4400 teardownUnneededNetwork(nai); 4401 } 4402 } 4403 } 4404 } 4405 4406 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4407 // being disconnected. 4408 // If only one Network's score or capabilities have been modified since the last time 4409 // this function was called, pass this Network in via the "changed" arugment, otherwise 4410 // pass null. 4411 // If only one Network has been changed but its NetworkCapabilities have not changed, 4412 // pass in the Network's score (from getCurrentScore()) prior to the change via 4413 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4414 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4415 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4416 // to avoid the slowness. It is not simply enough to process just "changed", for 4417 // example in the case where "changed"'s score decreases and another network should begin 4418 // satifying a NetworkRequest that "changed" currently satisfies. 4419 4420 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4421 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4422 // rematchNetworkAndRequests() handles. 4423 if (changed != null && oldScore < changed.getCurrentScore()) { 4424 rematchNetworkAndRequests(changed, NascentState.NOT_JUST_VALIDATED, 4425 ReapUnvalidatedNetworks.REAP); 4426 } else { 4427 for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) { 4428 rematchNetworkAndRequests((NetworkAgentInfo)i.next(), 4429 NascentState.NOT_JUST_VALIDATED, 4430 // Only reap the last time through the loop. Reaping before all rematching 4431 // is complete could incorrectly teardown a network that hasn't yet been 4432 // rematched. 4433 i.hasNext() ? ReapUnvalidatedNetworks.DONT_REAP 4434 : ReapUnvalidatedNetworks.REAP); 4435 } 4436 } 4437 } 4438 4439 private void updateInetCondition(NetworkAgentInfo nai) { 4440 // Don't bother updating until we've graduated to validated at least once. 4441 if (!nai.everValidated) return; 4442 // For now only update icons for default connection. 4443 // TODO: Update WiFi and cellular icons separately. b/17237507 4444 if (!isDefaultNetwork(nai)) return; 4445 4446 int newInetCondition = nai.lastValidated ? 100 : 0; 4447 // Don't repeat publish. 4448 if (newInetCondition == mDefaultInetConditionPublished) return; 4449 4450 mDefaultInetConditionPublished = newInetCondition; 4451 sendInetConditionBroadcast(nai.networkInfo); 4452 } 4453 4454 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4455 if (mLockdownTracker != null) { 4456 if (nai != null && nai.isVPN()) { 4457 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4458 } else { 4459 mLockdownTracker.onNetworkInfoChanged(); 4460 } 4461 } 4462 } 4463 4464 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4465 NetworkInfo.State state = newInfo.getState(); 4466 NetworkInfo oldInfo = null; 4467 synchronized (networkAgent) { 4468 oldInfo = networkAgent.networkInfo; 4469 networkAgent.networkInfo = newInfo; 4470 } 4471 notifyLockdownVpn(networkAgent); 4472 4473 if (oldInfo != null && oldInfo.getState() == state) { 4474 if (VDBG) log("ignoring duplicate network state non-change"); 4475 return; 4476 } 4477 if (DBG) { 4478 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4479 (oldInfo == null ? "null" : oldInfo.getState()) + 4480 " to " + state); 4481 } 4482 4483 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4484 try { 4485 // This should never fail. Specifying an already in use NetID will cause failure. 4486 if (networkAgent.isVPN()) { 4487 mNetd.createVirtualNetwork(networkAgent.network.netId, 4488 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4489 (networkAgent.networkMisc == null || 4490 !networkAgent.networkMisc.allowBypass)); 4491 } else { 4492 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4493 } 4494 } catch (Exception e) { 4495 loge("Error creating network " + networkAgent.network.netId + ": " 4496 + e.getMessage()); 4497 return; 4498 } 4499 networkAgent.created = true; 4500 updateLinkProperties(networkAgent, null); 4501 notifyIfacesChanged(); 4502 4503 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4504 scheduleUnvalidatedPrompt(networkAgent); 4505 4506 if (networkAgent.isVPN()) { 4507 // Temporarily disable the default proxy (not global). 4508 synchronized (mProxyLock) { 4509 if (!mDefaultProxyDisabled) { 4510 mDefaultProxyDisabled = true; 4511 if (mGlobalProxy == null && mDefaultProxy != null) { 4512 sendProxyBroadcast(null); 4513 } 4514 } 4515 } 4516 // TODO: support proxy per network. 4517 } 4518 4519 // Consider network even though it is not yet validated. 4520 rematchNetworkAndRequests(networkAgent, NascentState.NOT_JUST_VALIDATED, 4521 ReapUnvalidatedNetworks.REAP); 4522 4523 // This has to happen after matching the requests, because callbacks are just requests. 4524 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4525 } else if (state == NetworkInfo.State.DISCONNECTED || 4526 state == NetworkInfo.State.SUSPENDED) { 4527 networkAgent.asyncChannel.disconnect(); 4528 if (networkAgent.isVPN()) { 4529 synchronized (mProxyLock) { 4530 if (mDefaultProxyDisabled) { 4531 mDefaultProxyDisabled = false; 4532 if (mGlobalProxy == null && mDefaultProxy != null) { 4533 sendProxyBroadcast(mDefaultProxy); 4534 } 4535 } 4536 } 4537 } 4538 } 4539 } 4540 4541 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4542 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4543 if (score < 0) { 4544 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4545 "). Bumping score to min of 0"); 4546 score = 0; 4547 } 4548 4549 final int oldScore = nai.getCurrentScore(); 4550 nai.setCurrentScore(score); 4551 4552 rematchAllNetworksAndRequests(nai, oldScore); 4553 4554 sendUpdatedScoreToFactories(nai); 4555 } 4556 4557 // notify only this one new request of the current state 4558 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4559 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4560 // TODO - read state from monitor to decide what to send. 4561// if (nai.networkMonitor.isLingering()) { 4562// notifyType = NetworkCallbacks.LOSING; 4563// } else if (nai.networkMonitor.isEvaluating()) { 4564// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4565// } 4566 if (nri.mPendingIntent == null) { 4567 callCallbackForRequest(nri, nai, notifyType); 4568 } else { 4569 sendPendingIntentForRequest(nri, nai, notifyType); 4570 } 4571 } 4572 4573 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4574 // The NetworkInfo we actually send out has no bearing on the real 4575 // state of affairs. For example, if the default connection is mobile, 4576 // and a request for HIPRI has just gone away, we need to pretend that 4577 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4578 // the state to DISCONNECTED, even though the network is of type MOBILE 4579 // and is still connected. 4580 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4581 info.setType(type); 4582 if (connected) { 4583 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4584 sendConnectedBroadcast(info); 4585 } else { 4586 info.setDetailedState(DetailedState.DISCONNECTED, info.getReason(), info.getExtraInfo()); 4587 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4588 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4589 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4590 if (info.isFailover()) { 4591 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4592 nai.networkInfo.setFailover(false); 4593 } 4594 if (info.getReason() != null) { 4595 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4596 } 4597 if (info.getExtraInfo() != null) { 4598 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4599 } 4600 NetworkAgentInfo newDefaultAgent = null; 4601 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4602 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4603 if (newDefaultAgent != null) { 4604 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4605 newDefaultAgent.networkInfo); 4606 } else { 4607 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4608 } 4609 } 4610 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4611 mDefaultInetConditionPublished); 4612 sendStickyBroadcast(intent); 4613 if (newDefaultAgent != null) { 4614 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4615 } 4616 } 4617 } 4618 4619 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4620 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4621 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4622 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4623 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4624 if (VDBG) log(" sending notification for " + nr); 4625 if (nri.mPendingIntent == null) { 4626 callCallbackForRequest(nri, networkAgent, notifyType); 4627 } else { 4628 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4629 } 4630 } 4631 } 4632 4633 private String notifyTypeToName(int notifyType) { 4634 switch (notifyType) { 4635 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4636 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4637 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4638 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4639 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4640 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4641 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4642 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4643 } 4644 return "UNKNOWN"; 4645 } 4646 4647 /** 4648 * Notify other system services that set of active ifaces has changed. 4649 */ 4650 private void notifyIfacesChanged() { 4651 try { 4652 mStatsService.forceUpdateIfaces(); 4653 } catch (Exception ignored) { 4654 } 4655 } 4656 4657 @Override 4658 public boolean addVpnAddress(String address, int prefixLength) { 4659 throwIfLockdownEnabled(); 4660 int user = UserHandle.getUserId(Binder.getCallingUid()); 4661 synchronized (mVpns) { 4662 return mVpns.get(user).addAddress(address, prefixLength); 4663 } 4664 } 4665 4666 @Override 4667 public boolean removeVpnAddress(String address, int prefixLength) { 4668 throwIfLockdownEnabled(); 4669 int user = UserHandle.getUserId(Binder.getCallingUid()); 4670 synchronized (mVpns) { 4671 return mVpns.get(user).removeAddress(address, prefixLength); 4672 } 4673 } 4674 4675 @Override 4676 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4677 throwIfLockdownEnabled(); 4678 int user = UserHandle.getUserId(Binder.getCallingUid()); 4679 boolean success; 4680 synchronized (mVpns) { 4681 success = mVpns.get(user).setUnderlyingNetworks(networks); 4682 } 4683 if (success) { 4684 notifyIfacesChanged(); 4685 } 4686 return success; 4687 } 4688 4689 @Override 4690 public void factoryReset() { 4691 enforceConnectivityInternalPermission(); 4692 4693 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 4694 return; 4695 } 4696 4697 final int userId = UserHandle.getCallingUserId(); 4698 4699 // Turn airplane mode off 4700 setAirplaneMode(false); 4701 4702 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 4703 // Untether 4704 for (String tether : getTetheredIfaces()) { 4705 untether(tether); 4706 } 4707 } 4708 4709 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 4710 // Turn VPN off 4711 VpnConfig vpnConfig = getVpnConfig(userId); 4712 if (vpnConfig != null) { 4713 if (vpnConfig.legacy) { 4714 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 4715 } else { 4716 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 4717 // in the future without user intervention. 4718 setVpnPackageAuthorization(vpnConfig.user, userId, false); 4719 4720 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 4721 } 4722 } 4723 } 4724 } 4725} 4726