ConnectivityService.java revision 4136850b80865141e554b61068c51f1d525b2600
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.Inet6Address; 140import java.net.InetAddress; 141import java.net.UnknownHostException; 142import java.util.ArrayList; 143import java.util.Arrays; 144import java.util.Collection; 145import java.util.Collections; 146import java.util.HashMap; 147import java.util.HashSet; 148import java.util.Iterator; 149import java.util.List; 150import java.util.Map; 151import java.util.Objects; 152import java.util.concurrent.atomic.AtomicInteger; 153 154/** 155 * @hide 156 */ 157public class ConnectivityService extends IConnectivityManager.Stub 158 implements PendingIntent.OnFinished { 159 private static final String TAG = "ConnectivityService"; 160 161 private static final boolean DBG = true; 162 private static final boolean VDBG = false; 163 164 private static final boolean LOGD_RULES = false; 165 166 // TODO: create better separation between radio types and network types 167 168 // how long to wait before switching back to a radio's default network 169 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 170 // system property that can override the above value 171 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 172 "android.telephony.apn-restore"; 173 174 // How long to wait before putting up a "This network doesn't have an Internet connection, 175 // connect anyway?" dialog after the user selects a network that doesn't validate. 176 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 177 178 // How long to delay to removal of a pending intent based request. 179 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 180 private final int mReleasePendingIntentDelayMs; 181 182 private Tethering mTethering; 183 184 private final PermissionMonitor mPermissionMonitor; 185 186 private KeyStore mKeyStore; 187 188 @GuardedBy("mVpns") 189 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 190 191 private boolean mLockdownEnabled; 192 private LockdownVpnTracker mLockdownTracker; 193 194 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 195 private Object mRulesLock = new Object(); 196 /** Currently active network rules by UID. */ 197 private SparseIntArray mUidRules = new SparseIntArray(); 198 /** Set of ifaces that are costly. */ 199 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 200 201 final private Context mContext; 202 private int mNetworkPreference; 203 // 0 is full bad, 100 is full good 204 private int mDefaultInetConditionPublished = 0; 205 206 private int mNumDnsEntries; 207 208 private boolean mTestMode; 209 private static ConnectivityService sServiceInstance; 210 211 private INetworkManagementService mNetd; 212 private INetworkStatsService mStatsService; 213 private INetworkPolicyManager mPolicyManager; 214 215 private String mCurrentTcpBufferSizes; 216 217 private static final int ENABLED = 1; 218 private static final int DISABLED = 0; 219 220 // Arguments to rematchNetworkAndRequests() 221 private enum NascentState { 222 // Indicates a network was just validated for the first time. If the network is found to 223 // be unwanted (i.e. not satisfy any NetworkRequests) it is torn down. 224 JUST_VALIDATED, 225 // Indicates a network was not validated for the first time immediately prior to this call. 226 NOT_JUST_VALIDATED 227 }; 228 private enum ReapUnvalidatedNetworks { 229 // Tear down unvalidated networks that have no chance (i.e. even if validated) of becoming 230 // the highest scoring network satisfying a NetworkRequest. This should be passed when it's 231 // known that there may be unvalidated networks that could potentially be reaped, and when 232 // all networks have been rematched against all NetworkRequests. 233 REAP, 234 // Don't reap unvalidated networks. This should be passed when it's known that there are 235 // no unvalidated networks that could potentially be reaped, and when some networks have 236 // not yet been rematched against all NetworkRequests. 237 DONT_REAP 238 }; 239 240 /** 241 * used internally to change our mobile data enabled flag 242 */ 243 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 244 245 /** 246 * used internally to clear a wakelock when transitioning 247 * from one net to another. Clear happens when we get a new 248 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 249 * after a timeout if no network is found (typically 1 min). 250 */ 251 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 252 253 /** 254 * used internally to reload global proxy settings 255 */ 256 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 257 258 /** 259 * used internally to send a sticky broadcast delayed. 260 */ 261 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 262 263 /** 264 * PAC manager has received new port. 265 */ 266 private static final int EVENT_PROXY_HAS_CHANGED = 16; 267 268 /** 269 * used internally when registering NetworkFactories 270 * obj = NetworkFactoryInfo 271 */ 272 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 273 274 /** 275 * used internally when registering NetworkAgents 276 * obj = Messenger 277 */ 278 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 279 280 /** 281 * used to add a network request 282 * includes a NetworkRequestInfo 283 */ 284 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 285 286 /** 287 * indicates a timeout period is over - check if we had a network yet or not 288 * and if not, call the timeout calback (but leave the request live until they 289 * cancel it. 290 * includes a NetworkRequestInfo 291 */ 292 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 293 294 /** 295 * used to add a network listener - no request 296 * includes a NetworkRequestInfo 297 */ 298 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 299 300 /** 301 * used to remove a network request, either a listener or a real request 302 * arg1 = UID of caller 303 * obj = NetworkRequest 304 */ 305 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 306 307 /** 308 * used internally when registering NetworkFactories 309 * obj = Messenger 310 */ 311 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 312 313 /** 314 * used internally to expire a wakelock when transitioning 315 * from one net to another. Expire happens when we fail to find 316 * a new network (typically after 1 minute) - 317 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 318 * a replacement network. 319 */ 320 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 321 322 /** 323 * Used internally to indicate the system is ready. 324 */ 325 private static final int EVENT_SYSTEM_READY = 25; 326 327 /** 328 * used to add a network request with a pending intent 329 * includes a NetworkRequestInfo 330 */ 331 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 332 333 /** 334 * used to remove a pending intent and its associated network request. 335 * arg1 = UID of caller 336 * obj = PendingIntent 337 */ 338 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 339 340 /** 341 * used to specify whether a network should be used even if unvalidated. 342 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 343 * arg2 = whether to remember this choice in the future (1 or 0) 344 * obj = network 345 */ 346 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 347 348 /** 349 * used to ask the user to confirm a connection to an unvalidated network. 350 * obj = network 351 */ 352 private static final int EVENT_PROMPT_UNVALIDATED = 29; 353 354 /** 355 * used internally to (re)configure mobile data always-on settings. 356 */ 357 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 358 359 /** Handler used for internal events. */ 360 final private InternalHandler mHandler; 361 /** Handler used for incoming {@link NetworkStateTracker} events. */ 362 final private NetworkStateTrackerHandler mTrackerHandler; 363 364 private boolean mSystemReady; 365 private Intent mInitialBroadcast; 366 367 private PowerManager.WakeLock mNetTransitionWakeLock; 368 private String mNetTransitionWakeLockCausedBy = ""; 369 private int mNetTransitionWakeLockSerialNumber; 370 private int mNetTransitionWakeLockTimeout; 371 private final PowerManager.WakeLock mPendingIntentWakeLock; 372 373 private InetAddress mDefaultDns; 374 375 // used in DBG mode to track inet condition reports 376 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 377 private ArrayList mInetLog; 378 379 // track the current default http proxy - tell the world if we get a new one (real change) 380 private volatile ProxyInfo mDefaultProxy = null; 381 private Object mProxyLock = new Object(); 382 private boolean mDefaultProxyDisabled = false; 383 384 // track the global proxy. 385 private ProxyInfo mGlobalProxy = null; 386 387 private PacManager mPacManager = null; 388 389 final private SettingsObserver mSettingsObserver; 390 391 private UserManager mUserManager; 392 393 NetworkConfig[] mNetConfigs; 394 int mNetworksDefined; 395 396 // the set of network types that can only be enabled by system/sig apps 397 List mProtectedNetworks; 398 399 private DataConnectionStats mDataConnectionStats; 400 401 TelephonyManager mTelephonyManager; 402 403 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 404 private final static int MIN_NET_ID = 100; // some reserved marks 405 private final static int MAX_NET_ID = 65535; 406 private int mNextNetId = MIN_NET_ID; 407 408 // sequence number of NetworkRequests 409 private int mNextNetworkRequestId = 1; 410 411 /** 412 * Implements support for the legacy "one network per network type" model. 413 * 414 * We used to have a static array of NetworkStateTrackers, one for each 415 * network type, but that doesn't work any more now that we can have, 416 * for example, more that one wifi network. This class stores all the 417 * NetworkAgentInfo objects that support a given type, but the legacy 418 * API will only see the first one. 419 * 420 * It serves two main purposes: 421 * 422 * 1. Provide information about "the network for a given type" (since this 423 * API only supports one). 424 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 425 * the first network for a given type changes, or if the default network 426 * changes. 427 */ 428 private class LegacyTypeTracker { 429 430 private static final boolean DBG = true; 431 private static final boolean VDBG = false; 432 private static final String TAG = "CSLegacyTypeTracker"; 433 434 /** 435 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 436 * Each list holds references to all NetworkAgentInfos that are used to 437 * satisfy requests for that network type. 438 * 439 * This array is built out at startup such that an unsupported network 440 * doesn't get an ArrayList instance, making this a tristate: 441 * unsupported, supported but not active and active. 442 * 443 * The actual lists are populated when we scan the network types that 444 * are supported on this device. 445 */ 446 private ArrayList<NetworkAgentInfo> mTypeLists[]; 447 448 public LegacyTypeTracker() { 449 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 450 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 451 } 452 453 public void addSupportedType(int type) { 454 if (mTypeLists[type] != null) { 455 throw new IllegalStateException( 456 "legacy list for type " + type + "already initialized"); 457 } 458 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 459 } 460 461 public boolean isTypeSupported(int type) { 462 return isNetworkTypeValid(type) && mTypeLists[type] != null; 463 } 464 465 public NetworkAgentInfo getNetworkForType(int type) { 466 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 467 return mTypeLists[type].get(0); 468 } else { 469 return null; 470 } 471 } 472 473 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type, 474 boolean isDefaultNetwork) { 475 if (DBG) { 476 log("Sending " + (connected ? "connected" : "disconnected") + 477 " broadcast for type " + type + " " + nai.name() + 478 " isDefaultNetwork=" + isDefaultNetwork); 479 } 480 } 481 482 /** Adds the given network to the specified legacy type list. */ 483 public void add(int type, NetworkAgentInfo nai) { 484 if (!isTypeSupported(type)) { 485 return; // Invalid network type. 486 } 487 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 488 489 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 490 if (list.contains(nai)) { 491 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 492 return; 493 } 494 495 list.add(nai); 496 497 // Send a broadcast if this is the first network of its type or if it's the default. 498 final boolean isDefaultNetwork = isDefaultNetwork(nai); 499 if (list.size() == 1 || isDefaultNetwork) { 500 maybeLogBroadcast(nai, true, type, isDefaultNetwork); 501 sendLegacyNetworkBroadcast(nai, true, type); 502 } 503 } 504 505 /** Removes the given network from the specified legacy type list. */ 506 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 507 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 508 if (list == null || list.isEmpty()) { 509 return; 510 } 511 512 final boolean wasFirstNetwork = list.get(0).equals(nai); 513 514 if (!list.remove(nai)) { 515 return; 516 } 517 518 if (wasFirstNetwork || wasDefault) { 519 maybeLogBroadcast(nai, false, type, wasDefault); 520 sendLegacyNetworkBroadcast(nai, false, type); 521 } 522 523 if (!list.isEmpty() && wasFirstNetwork) { 524 if (DBG) log("Other network available for type " + type + 525 ", sending connected broadcast"); 526 final NetworkAgentInfo replacement = list.get(0); 527 maybeLogBroadcast(replacement, false, type, isDefaultNetwork(replacement)); 528 sendLegacyNetworkBroadcast(replacement, false, type); 529 } 530 } 531 532 /** Removes the given network from all legacy type lists. */ 533 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 534 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 535 for (int type = 0; type < mTypeLists.length; type++) { 536 remove(type, nai, wasDefault); 537 } 538 } 539 540 private String naiToString(NetworkAgentInfo nai) { 541 String name = (nai != null) ? nai.name() : "null"; 542 String state = (nai.networkInfo != null) ? 543 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 544 "???/???"; 545 return name + " " + state; 546 } 547 548 public void dump(IndentingPrintWriter pw) { 549 pw.println("mLegacyTypeTracker:"); 550 pw.increaseIndent(); 551 pw.print("Supported types:"); 552 for (int type = 0; type < mTypeLists.length; type++) { 553 if (mTypeLists[type] != null) pw.print(" " + type); 554 } 555 pw.println(); 556 pw.println("Current state:"); 557 pw.increaseIndent(); 558 for (int type = 0; type < mTypeLists.length; type++) { 559 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 560 for (NetworkAgentInfo nai : mTypeLists[type]) { 561 pw.println(type + " " + naiToString(nai)); 562 } 563 } 564 pw.decreaseIndent(); 565 pw.decreaseIndent(); 566 pw.println(); 567 } 568 569 // This class needs its own log method because it has a different TAG. 570 private void log(String s) { 571 Slog.d(TAG, s); 572 } 573 574 } 575 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 576 577 public ConnectivityService(Context context, INetworkManagementService netManager, 578 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 579 if (DBG) log("ConnectivityService starting up"); 580 581 mDefaultRequest = createInternetRequestForTransport(-1); 582 mNetworkRequests.put(mDefaultRequest, new NetworkRequestInfo( 583 null, mDefaultRequest, new Binder(), NetworkRequestInfo.REQUEST)); 584 585 mDefaultMobileDataRequest = createInternetRequestForTransport( 586 NetworkCapabilities.TRANSPORT_CELLULAR); 587 588 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 589 handlerThread.start(); 590 mHandler = new InternalHandler(handlerThread.getLooper()); 591 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 592 593 // setup our unique device name 594 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 595 String id = Settings.Secure.getString(context.getContentResolver(), 596 Settings.Secure.ANDROID_ID); 597 if (id != null && id.length() > 0) { 598 String name = new String("android-").concat(id); 599 SystemProperties.set("net.hostname", name); 600 } 601 } 602 603 // read our default dns server ip 604 String dns = Settings.Global.getString(context.getContentResolver(), 605 Settings.Global.DEFAULT_DNS_SERVER); 606 if (dns == null || dns.length() == 0) { 607 dns = context.getResources().getString( 608 com.android.internal.R.string.config_default_dns_server); 609 } 610 try { 611 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 612 } catch (IllegalArgumentException e) { 613 loge("Error setting defaultDns using " + dns); 614 } 615 616 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 617 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 618 619 mContext = checkNotNull(context, "missing Context"); 620 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 621 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 622 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 623 mKeyStore = KeyStore.getInstance(); 624 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 625 626 try { 627 mPolicyManager.registerListener(mPolicyListener); 628 } catch (RemoteException e) { 629 // ouch, no rules updates means some processes may never get network 630 loge("unable to register INetworkPolicyListener" + e.toString()); 631 } 632 633 final PowerManager powerManager = (PowerManager) context.getSystemService( 634 Context.POWER_SERVICE); 635 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 636 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 637 com.android.internal.R.integer.config_networkTransitionTimeout); 638 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 639 640 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 641 642 // TODO: What is the "correct" way to do determine if this is a wifi only device? 643 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 644 log("wifiOnly=" + wifiOnly); 645 String[] naStrings = context.getResources().getStringArray( 646 com.android.internal.R.array.networkAttributes); 647 for (String naString : naStrings) { 648 try { 649 NetworkConfig n = new NetworkConfig(naString); 650 if (VDBG) log("naString=" + naString + " config=" + n); 651 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 652 loge("Error in networkAttributes - ignoring attempt to define type " + 653 n.type); 654 continue; 655 } 656 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 657 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 658 n.type); 659 continue; 660 } 661 if (mNetConfigs[n.type] != null) { 662 loge("Error in networkAttributes - ignoring attempt to redefine type " + 663 n.type); 664 continue; 665 } 666 mLegacyTypeTracker.addSupportedType(n.type); 667 668 mNetConfigs[n.type] = n; 669 mNetworksDefined++; 670 } catch(Exception e) { 671 // ignore it - leave the entry null 672 } 673 } 674 675 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 676 if (mNetConfigs[TYPE_VPN] == null) { 677 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 678 // don't need to add TYPE_VPN to mNetConfigs. 679 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 680 mNetworksDefined++; // used only in the log() statement below. 681 } 682 683 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 684 685 mProtectedNetworks = new ArrayList<Integer>(); 686 int[] protectedNetworks = context.getResources().getIntArray( 687 com.android.internal.R.array.config_protectedNetworks); 688 for (int p : protectedNetworks) { 689 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 690 mProtectedNetworks.add(p); 691 } else { 692 if (DBG) loge("Ignoring protectedNetwork " + p); 693 } 694 } 695 696 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 697 && SystemProperties.get("ro.build.type").equals("eng"); 698 699 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 700 701 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 702 703 //set up the listener for user state for creating user VPNs 704 IntentFilter intentFilter = new IntentFilter(); 705 intentFilter.addAction(Intent.ACTION_USER_STARTING); 706 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 707 mContext.registerReceiverAsUser( 708 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 709 710 try { 711 mNetd.registerObserver(mTethering); 712 mNetd.registerObserver(mDataActivityObserver); 713 } catch (RemoteException e) { 714 loge("Error registering observer :" + e); 715 } 716 717 if (DBG) { 718 mInetLog = new ArrayList(); 719 } 720 721 mSettingsObserver = new SettingsObserver(mContext, mHandler); 722 registerSettingsCallbacks(); 723 724 mDataConnectionStats = new DataConnectionStats(mContext); 725 mDataConnectionStats.startMonitoring(); 726 727 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 728 729 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 730 } 731 732 private NetworkRequest createInternetRequestForTransport(int transportType) { 733 NetworkCapabilities netCap = new NetworkCapabilities(); 734 netCap.addCapability(NET_CAPABILITY_INTERNET); 735 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 736 if (transportType > -1) { 737 netCap.addTransportType(transportType); 738 } 739 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 740 } 741 742 private void handleMobileDataAlwaysOn() { 743 final boolean enable = (Settings.Global.getInt( 744 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 745 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 746 if (enable == isEnabled) { 747 return; // Nothing to do. 748 } 749 750 if (enable) { 751 handleRegisterNetworkRequest(new NetworkRequestInfo( 752 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestInfo.REQUEST)); 753 } else { 754 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 755 } 756 } 757 758 private void registerSettingsCallbacks() { 759 // Watch for global HTTP proxy changes. 760 mSettingsObserver.observe( 761 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 762 EVENT_APPLY_GLOBAL_HTTP_PROXY); 763 764 // Watch for whether or not to keep mobile data always on. 765 mSettingsObserver.observe( 766 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 767 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 768 } 769 770 private synchronized int nextNetworkRequestId() { 771 return mNextNetworkRequestId++; 772 } 773 774 @VisibleForTesting 775 protected int reserveNetId() { 776 synchronized (mNetworkForNetId) { 777 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 778 int netId = mNextNetId; 779 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 780 // Make sure NetID unused. http://b/16815182 781 if (!mNetIdInUse.get(netId)) { 782 mNetIdInUse.put(netId, true); 783 return netId; 784 } 785 } 786 } 787 throw new IllegalStateException("No free netIds"); 788 } 789 790 private NetworkState getFilteredNetworkState(int networkType, int uid) { 791 NetworkInfo info = null; 792 LinkProperties lp = null; 793 NetworkCapabilities nc = null; 794 Network network = null; 795 String subscriberId = null; 796 797 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 798 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 799 if (nai != null) { 800 synchronized (nai) { 801 info = new NetworkInfo(nai.networkInfo); 802 lp = new LinkProperties(nai.linkProperties); 803 nc = new NetworkCapabilities(nai.networkCapabilities); 804 // Network objects are outwardly immutable so there is no point to duplicating. 805 // Duplicating also precludes sharing socket factories and connection pools. 806 network = nai.network; 807 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 808 } 809 info.setType(networkType); 810 } else { 811 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 812 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 813 info.setIsAvailable(true); 814 lp = new LinkProperties(); 815 nc = new NetworkCapabilities(); 816 network = null; 817 } 818 info = getFilteredNetworkInfo(info, lp, uid); 819 } 820 821 return new NetworkState(info, lp, nc, network, subscriberId, null); 822 } 823 824 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 825 if (network == null) { 826 return null; 827 } 828 synchronized (mNetworkForNetId) { 829 return mNetworkForNetId.get(network.netId); 830 } 831 }; 832 833 private Network[] getVpnUnderlyingNetworks(int uid) { 834 if (!mLockdownEnabled) { 835 int user = UserHandle.getUserId(uid); 836 synchronized (mVpns) { 837 Vpn vpn = mVpns.get(user); 838 if (vpn != null && vpn.appliesToUid(uid)) { 839 return vpn.getUnderlyingNetworks(); 840 } 841 } 842 } 843 return null; 844 } 845 846 private NetworkState getUnfilteredActiveNetworkState(int uid) { 847 NetworkInfo info = null; 848 LinkProperties lp = null; 849 NetworkCapabilities nc = null; 850 Network network = null; 851 String subscriberId = null; 852 853 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 854 855 final Network[] networks = getVpnUnderlyingNetworks(uid); 856 if (networks != null) { 857 // getUnderlyingNetworks() returns: 858 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 859 // empty array => the VPN explicitly said "no default network". 860 // non-empty array => the VPN specified one or more default networks; we use the 861 // first one. 862 if (networks.length > 0) { 863 nai = getNetworkAgentInfoForNetwork(networks[0]); 864 } else { 865 nai = null; 866 } 867 } 868 869 if (nai != null) { 870 synchronized (nai) { 871 info = new NetworkInfo(nai.networkInfo); 872 lp = new LinkProperties(nai.linkProperties); 873 nc = new NetworkCapabilities(nai.networkCapabilities); 874 // Network objects are outwardly immutable so there is no point to duplicating. 875 // Duplicating also precludes sharing socket factories and connection pools. 876 network = nai.network; 877 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 878 } 879 } 880 881 return new NetworkState(info, lp, nc, network, subscriberId, null); 882 } 883 884 /** 885 * Check if UID should be blocked from using the network with the given LinkProperties. 886 */ 887 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 888 final boolean networkCostly; 889 final int uidRules; 890 891 final String iface = (lp == null ? "" : lp.getInterfaceName()); 892 synchronized (mRulesLock) { 893 networkCostly = mMeteredIfaces.contains(iface); 894 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 895 } 896 897 if ((uidRules & RULE_REJECT_ALL) != 0 898 || (networkCostly && (uidRules & RULE_REJECT_METERED) != 0)) { 899 return true; 900 } 901 902 // no restrictive rules; network is visible 903 return false; 904 } 905 906 /** 907 * Return a filtered {@link NetworkInfo}, potentially marked 908 * {@link DetailedState#BLOCKED} based on 909 * {@link #isNetworkWithLinkPropertiesBlocked}. 910 */ 911 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 912 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 913 // network is blocked; clone and override state 914 info = new NetworkInfo(info); 915 info.setDetailedState(DetailedState.BLOCKED, null, null); 916 if (VDBG) { 917 log("returning Blocked NetworkInfo for ifname=" + 918 lp.getInterfaceName() + ", uid=" + uid); 919 } 920 } 921 if (info != null && mLockdownTracker != null) { 922 info = mLockdownTracker.augmentNetworkInfo(info); 923 if (VDBG) log("returning Locked NetworkInfo"); 924 } 925 return info; 926 } 927 928 /** 929 * Return NetworkInfo for the active (i.e., connected) network interface. 930 * It is assumed that at most one network is active at a time. If more 931 * than one is active, it is indeterminate which will be returned. 932 * @return the info for the active network, or {@code null} if none is 933 * active 934 */ 935 @Override 936 public NetworkInfo getActiveNetworkInfo() { 937 enforceAccessPermission(); 938 final int uid = Binder.getCallingUid(); 939 NetworkState state = getUnfilteredActiveNetworkState(uid); 940 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 941 } 942 943 @Override 944 public Network getActiveNetwork() { 945 enforceAccessPermission(); 946 final int uid = Binder.getCallingUid(); 947 final int user = UserHandle.getUserId(uid); 948 int vpnNetId = NETID_UNSET; 949 synchronized (mVpns) { 950 final Vpn vpn = mVpns.get(user); 951 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 952 } 953 NetworkAgentInfo nai; 954 if (vpnNetId != NETID_UNSET) { 955 synchronized (mNetworkForNetId) { 956 nai = mNetworkForNetId.get(vpnNetId); 957 } 958 if (nai != null) return nai.network; 959 } 960 nai = getDefaultNetwork(); 961 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 962 return nai != null ? nai.network : null; 963 } 964 965 public NetworkInfo getActiveNetworkInfoUnfiltered() { 966 enforceAccessPermission(); 967 final int uid = Binder.getCallingUid(); 968 NetworkState state = getUnfilteredActiveNetworkState(uid); 969 return state.networkInfo; 970 } 971 972 @Override 973 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 974 enforceConnectivityInternalPermission(); 975 NetworkState state = getUnfilteredActiveNetworkState(uid); 976 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 977 } 978 979 @Override 980 public NetworkInfo getNetworkInfo(int networkType) { 981 enforceAccessPermission(); 982 final int uid = Binder.getCallingUid(); 983 if (getVpnUnderlyingNetworks(uid) != null) { 984 // A VPN is active, so we may need to return one of its underlying networks. This 985 // information is not available in LegacyTypeTracker, so we have to get it from 986 // getUnfilteredActiveNetworkState. 987 NetworkState state = getUnfilteredActiveNetworkState(uid); 988 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 989 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 990 } 991 } 992 NetworkState state = getFilteredNetworkState(networkType, uid); 993 return state.networkInfo; 994 } 995 996 @Override 997 public NetworkInfo getNetworkInfoForNetwork(Network network) { 998 enforceAccessPermission(); 999 final int uid = Binder.getCallingUid(); 1000 NetworkInfo info = null; 1001 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1002 if (nai != null) { 1003 synchronized (nai) { 1004 info = new NetworkInfo(nai.networkInfo); 1005 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1006 } 1007 } 1008 return info; 1009 } 1010 1011 @Override 1012 public NetworkInfo[] getAllNetworkInfo() { 1013 enforceAccessPermission(); 1014 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1015 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1016 networkType++) { 1017 NetworkInfo info = getNetworkInfo(networkType); 1018 if (info != null) { 1019 result.add(info); 1020 } 1021 } 1022 return result.toArray(new NetworkInfo[result.size()]); 1023 } 1024 1025 @Override 1026 public Network getNetworkForType(int networkType) { 1027 enforceAccessPermission(); 1028 final int uid = Binder.getCallingUid(); 1029 NetworkState state = getFilteredNetworkState(networkType, uid); 1030 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1031 return state.network; 1032 } 1033 return null; 1034 } 1035 1036 @Override 1037 public Network[] getAllNetworks() { 1038 enforceAccessPermission(); 1039 synchronized (mNetworkForNetId) { 1040 final Network[] result = new Network[mNetworkForNetId.size()]; 1041 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1042 result[i] = mNetworkForNetId.valueAt(i).network; 1043 } 1044 return result; 1045 } 1046 } 1047 1048 @Override 1049 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1050 // The basic principle is: if an app's traffic could possibly go over a 1051 // network, without the app doing anything multinetwork-specific, 1052 // (hence, by "default"), then include that network's capabilities in 1053 // the array. 1054 // 1055 // In the normal case, app traffic only goes over the system's default 1056 // network connection, so that's the only network returned. 1057 // 1058 // With a VPN in force, some app traffic may go into the VPN, and thus 1059 // over whatever underlying networks the VPN specifies, while other app 1060 // traffic may go over the system default network (e.g.: a split-tunnel 1061 // VPN, or an app disallowed by the VPN), so the set of networks 1062 // returned includes the VPN's underlying networks and the system 1063 // default. 1064 enforceAccessPermission(); 1065 1066 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1067 1068 NetworkAgentInfo nai = getDefaultNetwork(); 1069 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1070 if (nc != null) { 1071 result.put(nai.network, nc); 1072 } 1073 1074 if (!mLockdownEnabled) { 1075 synchronized (mVpns) { 1076 Vpn vpn = mVpns.get(userId); 1077 if (vpn != null) { 1078 Network[] networks = vpn.getUnderlyingNetworks(); 1079 if (networks != null) { 1080 for (Network network : networks) { 1081 nai = getNetworkAgentInfoForNetwork(network); 1082 nc = getNetworkCapabilitiesInternal(nai); 1083 if (nc != null) { 1084 result.put(network, nc); 1085 } 1086 } 1087 } 1088 } 1089 } 1090 } 1091 1092 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1093 out = result.values().toArray(out); 1094 return out; 1095 } 1096 1097 @Override 1098 public boolean isNetworkSupported(int networkType) { 1099 enforceAccessPermission(); 1100 return mLegacyTypeTracker.isTypeSupported(networkType); 1101 } 1102 1103 /** 1104 * Return LinkProperties for the active (i.e., connected) default 1105 * network interface. It is assumed that at most one default network 1106 * is active at a time. If more than one is active, it is indeterminate 1107 * which will be returned. 1108 * @return the ip properties for the active network, or {@code null} if 1109 * none is active 1110 */ 1111 @Override 1112 public LinkProperties getActiveLinkProperties() { 1113 enforceAccessPermission(); 1114 final int uid = Binder.getCallingUid(); 1115 NetworkState state = getUnfilteredActiveNetworkState(uid); 1116 return state.linkProperties; 1117 } 1118 1119 @Override 1120 public LinkProperties getLinkPropertiesForType(int networkType) { 1121 enforceAccessPermission(); 1122 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1123 if (nai != null) { 1124 synchronized (nai) { 1125 return new LinkProperties(nai.linkProperties); 1126 } 1127 } 1128 return null; 1129 } 1130 1131 // TODO - this should be ALL networks 1132 @Override 1133 public LinkProperties getLinkProperties(Network network) { 1134 enforceAccessPermission(); 1135 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1136 if (nai != null) { 1137 synchronized (nai) { 1138 return new LinkProperties(nai.linkProperties); 1139 } 1140 } 1141 return null; 1142 } 1143 1144 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1145 if (nai != null) { 1146 synchronized (nai) { 1147 if (nai.networkCapabilities != null) { 1148 return new NetworkCapabilities(nai.networkCapabilities); 1149 } 1150 } 1151 } 1152 return null; 1153 } 1154 1155 @Override 1156 public NetworkCapabilities getNetworkCapabilities(Network network) { 1157 enforceAccessPermission(); 1158 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1159 } 1160 1161 @Override 1162 public NetworkState[] getAllNetworkState() { 1163 // Require internal since we're handing out IMSI details 1164 enforceConnectivityInternalPermission(); 1165 1166 final ArrayList<NetworkState> result = Lists.newArrayList(); 1167 for (Network network : getAllNetworks()) { 1168 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1169 if (nai != null) { 1170 synchronized (nai) { 1171 final String subscriberId = (nai.networkMisc != null) 1172 ? nai.networkMisc.subscriberId : null; 1173 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1174 nai.networkCapabilities, network, subscriberId, null)); 1175 } 1176 } 1177 } 1178 return result.toArray(new NetworkState[result.size()]); 1179 } 1180 1181 @Override 1182 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1183 enforceAccessPermission(); 1184 final int uid = Binder.getCallingUid(); 1185 final long token = Binder.clearCallingIdentity(); 1186 try { 1187 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1188 if (state.networkInfo != null) { 1189 try { 1190 return mPolicyManager.getNetworkQuotaInfo(state); 1191 } catch (RemoteException e) { 1192 } 1193 } 1194 return null; 1195 } finally { 1196 Binder.restoreCallingIdentity(token); 1197 } 1198 } 1199 1200 @Override 1201 public boolean isActiveNetworkMetered() { 1202 enforceAccessPermission(); 1203 final int uid = Binder.getCallingUid(); 1204 final long token = Binder.clearCallingIdentity(); 1205 try { 1206 return isActiveNetworkMeteredUnchecked(uid); 1207 } finally { 1208 Binder.restoreCallingIdentity(token); 1209 } 1210 } 1211 1212 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1213 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1214 if (state.networkInfo != null) { 1215 try { 1216 return mPolicyManager.isNetworkMetered(state); 1217 } catch (RemoteException e) { 1218 } 1219 } 1220 return false; 1221 } 1222 1223 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1224 @Override 1225 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1226 int deviceType = Integer.parseInt(label); 1227 sendDataActivityBroadcast(deviceType, active, tsNanos); 1228 } 1229 }; 1230 1231 /** 1232 * Ensure that a network route exists to deliver traffic to the specified 1233 * host via the specified network interface. 1234 * @param networkType the type of the network over which traffic to the 1235 * specified host is to be routed 1236 * @param hostAddress the IP address of the host to which the route is 1237 * desired 1238 * @return {@code true} on success, {@code false} on failure 1239 */ 1240 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1241 enforceChangePermission(); 1242 if (mProtectedNetworks.contains(networkType)) { 1243 enforceConnectivityInternalPermission(); 1244 } 1245 1246 InetAddress addr; 1247 try { 1248 addr = InetAddress.getByAddress(hostAddress); 1249 } catch (UnknownHostException e) { 1250 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1251 return false; 1252 } 1253 1254 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1255 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1256 return false; 1257 } 1258 1259 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1260 if (nai == null) { 1261 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1262 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1263 } else { 1264 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1265 } 1266 return false; 1267 } 1268 1269 DetailedState netState; 1270 synchronized (nai) { 1271 netState = nai.networkInfo.getDetailedState(); 1272 } 1273 1274 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1275 if (VDBG) { 1276 log("requestRouteToHostAddress on down network " 1277 + "(" + networkType + ") - dropped" 1278 + " netState=" + netState); 1279 } 1280 return false; 1281 } 1282 1283 final int uid = Binder.getCallingUid(); 1284 final long token = Binder.clearCallingIdentity(); 1285 try { 1286 LinkProperties lp; 1287 int netId; 1288 synchronized (nai) { 1289 lp = nai.linkProperties; 1290 netId = nai.network.netId; 1291 } 1292 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1293 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1294 return ok; 1295 } finally { 1296 Binder.restoreCallingIdentity(token); 1297 } 1298 } 1299 1300 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1301 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1302 if (bestRoute == null) { 1303 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1304 } else { 1305 String iface = bestRoute.getInterface(); 1306 if (bestRoute.getGateway().equals(addr)) { 1307 // if there is no better route, add the implied hostroute for our gateway 1308 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1309 } else { 1310 // if we will connect to this through another route, add a direct route 1311 // to it's gateway 1312 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1313 } 1314 } 1315 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1316 try { 1317 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1318 } catch (Exception e) { 1319 // never crash - catch them all 1320 if (DBG) loge("Exception trying to add a route: " + e); 1321 return false; 1322 } 1323 return true; 1324 } 1325 1326 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1327 @Override 1328 public void onUidRulesChanged(int uid, int uidRules) { 1329 // caller is NPMS, since we only register with them 1330 if (LOGD_RULES) { 1331 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1332 } 1333 1334 synchronized (mRulesLock) { 1335 // skip update when we've already applied rules 1336 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1337 if (oldRules == uidRules) return; 1338 1339 mUidRules.put(uid, uidRules); 1340 } 1341 1342 // TODO: notify UID when it has requested targeted updates 1343 } 1344 1345 @Override 1346 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1347 // caller is NPMS, since we only register with them 1348 if (LOGD_RULES) { 1349 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1350 } 1351 1352 synchronized (mRulesLock) { 1353 mMeteredIfaces.clear(); 1354 for (String iface : meteredIfaces) { 1355 mMeteredIfaces.add(iface); 1356 } 1357 } 1358 } 1359 1360 @Override 1361 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1362 // caller is NPMS, since we only register with them 1363 if (LOGD_RULES) { 1364 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1365 } 1366 } 1367 }; 1368 1369 /** 1370 * Require that the caller is either in the same user or has appropriate permission to interact 1371 * across users. 1372 * 1373 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1374 */ 1375 private void enforceCrossUserPermission(int userId) { 1376 if (userId == UserHandle.getCallingUserId()) { 1377 // Not a cross-user call. 1378 return; 1379 } 1380 mContext.enforceCallingOrSelfPermission( 1381 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1382 "ConnectivityService"); 1383 } 1384 1385 private void enforceInternetPermission() { 1386 mContext.enforceCallingOrSelfPermission( 1387 android.Manifest.permission.INTERNET, 1388 "ConnectivityService"); 1389 } 1390 1391 private void enforceAccessPermission() { 1392 mContext.enforceCallingOrSelfPermission( 1393 android.Manifest.permission.ACCESS_NETWORK_STATE, 1394 "ConnectivityService"); 1395 } 1396 1397 private void enforceChangePermission() { 1398 mContext.enforceCallingOrSelfPermission( 1399 android.Manifest.permission.CHANGE_NETWORK_STATE, 1400 "ConnectivityService"); 1401 } 1402 1403 private void enforceTetherAccessPermission() { 1404 mContext.enforceCallingOrSelfPermission( 1405 android.Manifest.permission.ACCESS_NETWORK_STATE, 1406 "ConnectivityService"); 1407 } 1408 1409 private void enforceConnectivityInternalPermission() { 1410 mContext.enforceCallingOrSelfPermission( 1411 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1412 "ConnectivityService"); 1413 } 1414 1415 public void sendConnectedBroadcast(NetworkInfo info) { 1416 enforceConnectivityInternalPermission(); 1417 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1418 } 1419 1420 private void sendInetConditionBroadcast(NetworkInfo info) { 1421 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1422 } 1423 1424 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1425 if (mLockdownTracker != null) { 1426 info = mLockdownTracker.augmentNetworkInfo(info); 1427 } 1428 1429 Intent intent = new Intent(bcastType); 1430 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1431 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1432 if (info.isFailover()) { 1433 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1434 info.setFailover(false); 1435 } 1436 if (info.getReason() != null) { 1437 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1438 } 1439 if (info.getExtraInfo() != null) { 1440 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1441 info.getExtraInfo()); 1442 } 1443 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1444 return intent; 1445 } 1446 1447 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1448 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1449 } 1450 1451 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1452 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1453 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1454 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1455 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1456 final long ident = Binder.clearCallingIdentity(); 1457 try { 1458 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1459 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1460 } finally { 1461 Binder.restoreCallingIdentity(ident); 1462 } 1463 } 1464 1465 private void sendStickyBroadcast(Intent intent) { 1466 synchronized(this) { 1467 if (!mSystemReady) { 1468 mInitialBroadcast = new Intent(intent); 1469 } 1470 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1471 if (DBG) { 1472 log("sendStickyBroadcast: action=" + intent.getAction()); 1473 } 1474 1475 final long ident = Binder.clearCallingIdentity(); 1476 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1477 final IBatteryStats bs = BatteryStatsService.getService(); 1478 try { 1479 NetworkInfo ni = intent.getParcelableExtra( 1480 ConnectivityManager.EXTRA_NETWORK_INFO); 1481 bs.noteConnectivityChanged(intent.getIntExtra( 1482 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1483 ni != null ? ni.getState().toString() : "?"); 1484 } catch (RemoteException e) { 1485 } 1486 } 1487 try { 1488 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1489 } finally { 1490 Binder.restoreCallingIdentity(ident); 1491 } 1492 } 1493 } 1494 1495 void systemReady() { 1496 loadGlobalProxy(); 1497 1498 synchronized(this) { 1499 mSystemReady = true; 1500 if (mInitialBroadcast != null) { 1501 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1502 mInitialBroadcast = null; 1503 } 1504 } 1505 // load the global proxy at startup 1506 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1507 1508 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1509 // for user to unlock device. 1510 if (!updateLockdownVpn()) { 1511 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1512 mContext.registerReceiver(mUserPresentReceiver, filter); 1513 } 1514 1515 // Configure whether mobile data is always on. 1516 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1517 1518 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1519 1520 mPermissionMonitor.startMonitoring(); 1521 } 1522 1523 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1524 @Override 1525 public void onReceive(Context context, Intent intent) { 1526 // Try creating lockdown tracker, since user present usually means 1527 // unlocked keystore. 1528 if (updateLockdownVpn()) { 1529 mContext.unregisterReceiver(this); 1530 } 1531 } 1532 }; 1533 1534 /** 1535 * Setup data activity tracking for the given network. 1536 * 1537 * Every {@code setupDataActivityTracking} should be paired with a 1538 * {@link #removeDataActivityTracking} for cleanup. 1539 */ 1540 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1541 final String iface = networkAgent.linkProperties.getInterfaceName(); 1542 1543 final int timeout; 1544 int type = ConnectivityManager.TYPE_NONE; 1545 1546 if (networkAgent.networkCapabilities.hasTransport( 1547 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1548 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1549 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1550 5); 1551 type = ConnectivityManager.TYPE_MOBILE; 1552 } else if (networkAgent.networkCapabilities.hasTransport( 1553 NetworkCapabilities.TRANSPORT_WIFI)) { 1554 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1555 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1556 5); 1557 type = ConnectivityManager.TYPE_WIFI; 1558 } else { 1559 // do not track any other networks 1560 timeout = 0; 1561 } 1562 1563 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1564 try { 1565 mNetd.addIdleTimer(iface, timeout, type); 1566 } catch (Exception e) { 1567 // You shall not crash! 1568 loge("Exception in setupDataActivityTracking " + e); 1569 } 1570 } 1571 } 1572 1573 /** 1574 * Remove data activity tracking when network disconnects. 1575 */ 1576 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1577 final String iface = networkAgent.linkProperties.getInterfaceName(); 1578 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1579 1580 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1581 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1582 try { 1583 // the call fails silently if no idletimer setup for this interface 1584 mNetd.removeIdleTimer(iface); 1585 } catch (Exception e) { 1586 loge("Exception in removeDataActivityTracking " + e); 1587 } 1588 } 1589 } 1590 1591 /** 1592 * Reads the network specific MTU size from reources. 1593 * and set it on it's iface. 1594 */ 1595 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1596 final String iface = newLp.getInterfaceName(); 1597 final int mtu = newLp.getMtu(); 1598 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1599 if (VDBG) log("identical MTU - not setting"); 1600 return; 1601 } 1602 1603 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1604 loge("Unexpected mtu value: " + mtu + ", " + iface); 1605 return; 1606 } 1607 1608 // Cannot set MTU without interface name 1609 if (TextUtils.isEmpty(iface)) { 1610 loge("Setting MTU size with null iface."); 1611 return; 1612 } 1613 1614 try { 1615 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1616 mNetd.setMtu(iface, mtu); 1617 } catch (Exception e) { 1618 Slog.e(TAG, "exception in setMtu()" + e); 1619 } 1620 } 1621 1622 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1623 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1624 1625 // Overridden for testing purposes to avoid writing to SystemProperties. 1626 @VisibleForTesting 1627 protected int getDefaultTcpRwnd() { 1628 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1629 } 1630 1631 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1632 if (isDefaultNetwork(nai) == false) { 1633 return; 1634 } 1635 1636 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1637 String[] values = null; 1638 if (tcpBufferSizes != null) { 1639 values = tcpBufferSizes.split(","); 1640 } 1641 1642 if (values == null || values.length != 6) { 1643 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1644 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1645 values = tcpBufferSizes.split(","); 1646 } 1647 1648 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1649 1650 try { 1651 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1652 1653 final String prefix = "/sys/kernel/ipv4/tcp_"; 1654 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1655 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1656 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1657 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1658 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1659 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1660 mCurrentTcpBufferSizes = tcpBufferSizes; 1661 } catch (IOException e) { 1662 loge("Can't set TCP buffer sizes:" + e); 1663 } 1664 1665 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1666 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1667 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1668 if (rwndValue != 0) { 1669 SystemProperties.set(sysctlKey, rwndValue.toString()); 1670 } 1671 } 1672 1673 private void flushVmDnsCache() { 1674 /* 1675 * Tell the VMs to toss their DNS caches 1676 */ 1677 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1678 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1679 /* 1680 * Connectivity events can happen before boot has completed ... 1681 */ 1682 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1683 final long ident = Binder.clearCallingIdentity(); 1684 try { 1685 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1686 } finally { 1687 Binder.restoreCallingIdentity(ident); 1688 } 1689 } 1690 1691 @Override 1692 public int getRestoreDefaultNetworkDelay(int networkType) { 1693 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1694 NETWORK_RESTORE_DELAY_PROP_NAME); 1695 if(restoreDefaultNetworkDelayStr != null && 1696 restoreDefaultNetworkDelayStr.length() != 0) { 1697 try { 1698 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1699 } catch (NumberFormatException e) { 1700 } 1701 } 1702 // if the system property isn't set, use the value for the apn type 1703 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1704 1705 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1706 (mNetConfigs[networkType] != null)) { 1707 ret = mNetConfigs[networkType].restoreTime; 1708 } 1709 return ret; 1710 } 1711 1712 private boolean shouldPerformDiagnostics(String[] args) { 1713 for (String arg : args) { 1714 if (arg.equals("--diag")) { 1715 return true; 1716 } 1717 } 1718 return false; 1719 } 1720 1721 @Override 1722 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1723 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1724 if (mContext.checkCallingOrSelfPermission( 1725 android.Manifest.permission.DUMP) 1726 != PackageManager.PERMISSION_GRANTED) { 1727 pw.println("Permission Denial: can't dump ConnectivityService " + 1728 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1729 Binder.getCallingUid()); 1730 return; 1731 } 1732 1733 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1734 if (shouldPerformDiagnostics(args)) { 1735 final long DIAG_TIME_MS = 5000; 1736 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1737 // Start gathering diagnostic information. 1738 netDiags.add(new NetworkDiagnostics( 1739 nai.network, 1740 new LinkProperties(nai.linkProperties), 1741 DIAG_TIME_MS)); 1742 } 1743 1744 for (NetworkDiagnostics netDiag : netDiags) { 1745 pw.println(); 1746 netDiag.waitForMeasurements(); 1747 netDiag.dump(pw); 1748 } 1749 1750 return; 1751 } 1752 1753 pw.print("NetworkFactories for:"); 1754 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1755 pw.print(" " + nfi.name); 1756 } 1757 pw.println(); 1758 pw.println(); 1759 1760 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1761 pw.print("Active default network: "); 1762 if (defaultNai == null) { 1763 pw.println("none"); 1764 } else { 1765 pw.println(defaultNai.network.netId); 1766 } 1767 pw.println(); 1768 1769 pw.println("Current Networks:"); 1770 pw.increaseIndent(); 1771 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1772 pw.println(nai.toString()); 1773 pw.increaseIndent(); 1774 pw.println("Requests:"); 1775 pw.increaseIndent(); 1776 for (int i = 0; i < nai.networkRequests.size(); i++) { 1777 pw.println(nai.networkRequests.valueAt(i).toString()); 1778 } 1779 pw.decreaseIndent(); 1780 pw.println("Lingered:"); 1781 pw.increaseIndent(); 1782 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1783 pw.decreaseIndent(); 1784 pw.decreaseIndent(); 1785 } 1786 pw.decreaseIndent(); 1787 pw.println(); 1788 1789 pw.println("Network Requests:"); 1790 pw.increaseIndent(); 1791 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1792 pw.println(nri.toString()); 1793 } 1794 pw.println(); 1795 pw.decreaseIndent(); 1796 1797 mLegacyTypeTracker.dump(pw); 1798 1799 synchronized (this) { 1800 pw.print("mNetTransitionWakeLock: currently " + 1801 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1802 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1803 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1804 } else { 1805 pw.println(", last requested never"); 1806 } 1807 } 1808 pw.println(); 1809 1810 mTethering.dump(fd, pw, args); 1811 1812 if (mInetLog != null && mInetLog.size() > 0) { 1813 pw.println(); 1814 pw.println("Inet condition reports:"); 1815 pw.increaseIndent(); 1816 for(int i = 0; i < mInetLog.size(); i++) { 1817 pw.println(mInetLog.get(i)); 1818 } 1819 pw.decreaseIndent(); 1820 } 1821 } 1822 1823 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1824 if (nai.network == null) return false; 1825 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1826 if (officialNai != null && officialNai.equals(nai)) return true; 1827 if (officialNai != null || VDBG) { 1828 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1829 " - " + nai); 1830 } 1831 return false; 1832 } 1833 1834 private boolean isRequest(NetworkRequest request) { 1835 return mNetworkRequests.get(request).isRequest; 1836 } 1837 1838 // must be stateless - things change under us. 1839 private class NetworkStateTrackerHandler extends Handler { 1840 public NetworkStateTrackerHandler(Looper looper) { 1841 super(looper); 1842 } 1843 1844 @Override 1845 public void handleMessage(Message msg) { 1846 NetworkInfo info; 1847 switch (msg.what) { 1848 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1849 handleAsyncChannelHalfConnect(msg); 1850 break; 1851 } 1852 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1853 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1854 if (nai != null) nai.asyncChannel.disconnect(); 1855 break; 1856 } 1857 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1858 handleAsyncChannelDisconnected(msg); 1859 break; 1860 } 1861 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1862 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1863 if (nai == null) { 1864 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1865 } else { 1866 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1867 } 1868 break; 1869 } 1870 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1871 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1872 if (nai == null) { 1873 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1874 } else { 1875 if (VDBG) { 1876 log("Update of LinkProperties for " + nai.name() + 1877 "; created=" + nai.created); 1878 } 1879 LinkProperties oldLp = nai.linkProperties; 1880 synchronized (nai) { 1881 nai.linkProperties = (LinkProperties)msg.obj; 1882 } 1883 if (nai.created) updateLinkProperties(nai, oldLp); 1884 } 1885 break; 1886 } 1887 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1888 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1889 if (nai == null) { 1890 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1891 break; 1892 } 1893 info = (NetworkInfo) msg.obj; 1894 updateNetworkInfo(nai, info); 1895 break; 1896 } 1897 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1898 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1899 if (nai == null) { 1900 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1901 break; 1902 } 1903 Integer score = (Integer) msg.obj; 1904 if (score != null) updateNetworkScore(nai, score.intValue()); 1905 break; 1906 } 1907 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1908 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1909 if (nai == null) { 1910 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1911 break; 1912 } 1913 try { 1914 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1915 } catch (Exception e) { 1916 // Never crash! 1917 loge("Exception in addVpnUidRanges: " + e); 1918 } 1919 break; 1920 } 1921 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1922 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1923 if (nai == null) { 1924 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1925 break; 1926 } 1927 try { 1928 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1929 } catch (Exception e) { 1930 // Never crash! 1931 loge("Exception in removeVpnUidRanges: " + e); 1932 } 1933 break; 1934 } 1935 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1936 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1937 if (nai == null) { 1938 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1939 break; 1940 } 1941 if (nai.created && !nai.networkMisc.explicitlySelected) { 1942 loge("ERROR: created network explicitly selected."); 1943 } 1944 nai.networkMisc.explicitlySelected = true; 1945 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 1946 break; 1947 } 1948 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1949 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1950 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_TESTED")) { 1951 final boolean valid = 1952 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1953 final boolean validationChanged = (valid != nai.lastValidated); 1954 nai.lastValidated = valid; 1955 if (valid) { 1956 if (DBG) log("Validated " + nai.name()); 1957 nai.networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 1958 if (!nai.everValidated) { 1959 nai.everValidated = true; 1960 rematchNetworkAndRequests(nai, NascentState.JUST_VALIDATED, 1961 ReapUnvalidatedNetworks.REAP); 1962 // If score has changed, rebroadcast to NetworkFactories. b/17726566 1963 sendUpdatedScoreToFactories(nai); 1964 } 1965 } else { 1966 nai.networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 1967 } 1968 updateInetCondition(nai); 1969 // Let the NetworkAgent know the state of its network 1970 nai.asyncChannel.sendMessage( 1971 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 1972 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 1973 0, null); 1974 1975 if (validationChanged) { 1976 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 1977 } 1978 } 1979 break; 1980 } 1981 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 1982 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1983 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 1984 handleLingerComplete(nai); 1985 } 1986 break; 1987 } 1988 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 1989 final int netId = msg.arg2; 1990 if (msg.arg1 == 0) { 1991 setProvNotificationVisibleIntent(false, netId, null, 0, null, null); 1992 } else { 1993 final NetworkAgentInfo nai; 1994 synchronized (mNetworkForNetId) { 1995 nai = mNetworkForNetId.get(netId); 1996 } 1997 if (nai == null) { 1998 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 1999 break; 2000 } 2001 nai.captivePortalDetected = true; 2002 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2003 nai.networkInfo.getType(),nai.networkInfo.getExtraInfo(), 2004 (PendingIntent)msg.obj); 2005 } 2006 break; 2007 } 2008 } 2009 } 2010 } 2011 2012 // Cancel any lingering so the linger timeout doesn't teardown a network. 2013 // This should be called when a network begins satisfying a NetworkRequest. 2014 // Note: depending on what state the NetworkMonitor is in (e.g., 2015 // if it's awaiting captive portal login, or if validation failed), this 2016 // may trigger a re-evaluation of the network. 2017 private void unlinger(NetworkAgentInfo nai) { 2018 if (VDBG) log("Canceling linger of " + nai.name()); 2019 // If network has never been validated, it cannot have been lingered, so don't bother 2020 // needlessly triggering a re-evaluation. 2021 if (!nai.everValidated) return; 2022 nai.networkLingered.clear(); 2023 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2024 } 2025 2026 private void handleAsyncChannelHalfConnect(Message msg) { 2027 AsyncChannel ac = (AsyncChannel) msg.obj; 2028 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2029 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2030 if (VDBG) log("NetworkFactory connected"); 2031 // A network factory has connected. Send it all current NetworkRequests. 2032 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2033 if (nri.isRequest == false) continue; 2034 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2035 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2036 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2037 } 2038 } else { 2039 loge("Error connecting NetworkFactory"); 2040 mNetworkFactoryInfos.remove(msg.obj); 2041 } 2042 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2043 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2044 if (VDBG) log("NetworkAgent connected"); 2045 // A network agent has requested a connection. Establish the connection. 2046 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2047 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2048 } else { 2049 loge("Error connecting NetworkAgent"); 2050 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2051 if (nai != null) { 2052 final boolean wasDefault = isDefaultNetwork(nai); 2053 synchronized (mNetworkForNetId) { 2054 mNetworkForNetId.remove(nai.network.netId); 2055 mNetIdInUse.delete(nai.network.netId); 2056 } 2057 // Just in case. 2058 mLegacyTypeTracker.remove(nai, wasDefault); 2059 } 2060 } 2061 } 2062 } 2063 2064 private void handleAsyncChannelDisconnected(Message msg) { 2065 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2066 if (nai != null) { 2067 if (DBG) { 2068 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2069 } 2070 // A network agent has disconnected. 2071 if (nai.created) { 2072 // Tell netd to clean up the configuration for this network 2073 // (routing rules, DNS, etc). 2074 try { 2075 mNetd.removeNetwork(nai.network.netId); 2076 } catch (Exception e) { 2077 loge("Exception removing network: " + e); 2078 } 2079 } 2080 // TODO - if we move the logic to the network agent (have them disconnect 2081 // because they lost all their requests or because their score isn't good) 2082 // then they would disconnect organically, report their new state and then 2083 // disconnect the channel. 2084 if (nai.networkInfo.isConnected()) { 2085 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2086 null, null); 2087 } 2088 final boolean wasDefault = isDefaultNetwork(nai); 2089 if (wasDefault) { 2090 mDefaultInetConditionPublished = 0; 2091 } 2092 notifyIfacesChanged(); 2093 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2094 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2095 mNetworkAgentInfos.remove(msg.replyTo); 2096 updateClat(null, nai.linkProperties, nai); 2097 synchronized (mNetworkForNetId) { 2098 mNetworkForNetId.remove(nai.network.netId); 2099 mNetIdInUse.delete(nai.network.netId); 2100 } 2101 // Since we've lost the network, go through all the requests that 2102 // it was satisfying and see if any other factory can satisfy them. 2103 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2104 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2105 for (int i = 0; i < nai.networkRequests.size(); i++) { 2106 NetworkRequest request = nai.networkRequests.valueAt(i); 2107 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2108 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2109 if (DBG) { 2110 log("Checking for replacement network to handle request " + request ); 2111 } 2112 mNetworkForRequestId.remove(request.requestId); 2113 sendUpdatedScoreToFactories(request, 0); 2114 NetworkAgentInfo alternative = null; 2115 for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) { 2116 if (existing.satisfies(request) && 2117 (alternative == null || 2118 alternative.getCurrentScore() < existing.getCurrentScore())) { 2119 alternative = existing; 2120 } 2121 } 2122 if (alternative != null) { 2123 if (DBG) log(" found replacement in " + alternative.name()); 2124 if (!toActivate.contains(alternative)) { 2125 toActivate.add(alternative); 2126 } 2127 } 2128 } 2129 } 2130 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2131 removeDataActivityTracking(nai); 2132 notifyLockdownVpn(nai); 2133 requestNetworkTransitionWakelock(nai.name()); 2134 } 2135 mLegacyTypeTracker.remove(nai, wasDefault); 2136 for (NetworkAgentInfo networkToActivate : toActivate) { 2137 unlinger(networkToActivate); 2138 rematchNetworkAndRequests(networkToActivate, NascentState.NOT_JUST_VALIDATED, 2139 ReapUnvalidatedNetworks.DONT_REAP); 2140 } 2141 } 2142 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2143 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2144 } 2145 2146 // If this method proves to be too slow then we can maintain a separate 2147 // pendingIntent => NetworkRequestInfo map. 2148 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2149 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2150 Intent intent = pendingIntent.getIntent(); 2151 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2152 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2153 if (existingPendingIntent != null && 2154 existingPendingIntent.getIntent().filterEquals(intent)) { 2155 return entry.getValue(); 2156 } 2157 } 2158 return null; 2159 } 2160 2161 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2162 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2163 2164 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2165 if (existingRequest != null) { // remove the existing request. 2166 if (DBG) log("Replacing " + existingRequest.request + " with " 2167 + nri.request + " because their intents matched."); 2168 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2169 } 2170 handleRegisterNetworkRequest(nri); 2171 } 2172 2173 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2174 mNetworkRequests.put(nri.request, nri); 2175 2176 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2177 2178 // Check for the best currently alive network that satisfies this request 2179 NetworkAgentInfo bestNetwork = null; 2180 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2181 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2182 if (network.satisfies(nri.request)) { 2183 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2184 if (!nri.isRequest) { 2185 // Not setting bestNetwork here as a listening NetworkRequest may be 2186 // satisfied by multiple Networks. Instead the request is added to 2187 // each satisfying Network and notified about each. 2188 network.addRequest(nri.request); 2189 notifyNetworkCallback(network, nri); 2190 } else if (bestNetwork == null || 2191 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2192 bestNetwork = network; 2193 } 2194 } 2195 } 2196 if (bestNetwork != null) { 2197 if (DBG) log("using " + bestNetwork.name()); 2198 unlinger(bestNetwork); 2199 bestNetwork.addRequest(nri.request); 2200 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2201 notifyNetworkCallback(bestNetwork, nri); 2202 if (nri.request.legacyType != TYPE_NONE) { 2203 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2204 } 2205 } 2206 2207 if (nri.isRequest) { 2208 if (DBG) log("sending new NetworkRequest to factories"); 2209 final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore(); 2210 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2211 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2212 0, nri.request); 2213 } 2214 } 2215 } 2216 2217 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2218 int callingUid) { 2219 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2220 if (nri != null) { 2221 handleReleaseNetworkRequest(nri.request, callingUid); 2222 } 2223 } 2224 2225 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2226 // For validated Networks this is simply whether it is satsifying any NetworkRequests. 2227 // For unvalidated Networks this is whether it is satsifying any NetworkRequests or 2228 // were it to become validated, would it have a chance of satisfying any NetworkRequests. 2229 private boolean unneeded(NetworkAgentInfo nai) { 2230 if (!nai.created || nai.isVPN()) return false; 2231 boolean unneeded = true; 2232 if (nai.everValidated) { 2233 for (int i = 0; i < nai.networkRequests.size() && unneeded; i++) { 2234 final NetworkRequest nr = nai.networkRequests.valueAt(i); 2235 try { 2236 if (isRequest(nr)) unneeded = false; 2237 } catch (Exception e) { 2238 loge("Request " + nr + " not found in mNetworkRequests."); 2239 loge(" it came from request list of " + nai.name()); 2240 } 2241 } 2242 } else { 2243 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2244 // If this Network is already the highest scoring Network for a request, or if 2245 // there is hope for it to become one if it validated, then it is needed. 2246 if (nri.isRequest && nai.satisfies(nri.request) && 2247 (nai.networkRequests.get(nri.request.requestId) != null || 2248 // Note that this catches two important cases: 2249 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2250 // is currently satisfying the request. This is desirable when 2251 // cellular ends up validating but WiFi does not. 2252 // 2. Unvalidated WiFi will not be reaped when validated cellular 2253 // is currently satsifying the request. This is desirable when 2254 // WiFi ends up validating and out scoring cellular. 2255 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2256 nai.getCurrentScoreAsValidated())) { 2257 unneeded = false; 2258 break; 2259 } 2260 } 2261 } 2262 return unneeded; 2263 } 2264 2265 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2266 NetworkRequestInfo nri = mNetworkRequests.get(request); 2267 if (nri != null) { 2268 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2269 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2270 return; 2271 } 2272 if (DBG) log("releasing NetworkRequest " + request); 2273 nri.unlinkDeathRecipient(); 2274 mNetworkRequests.remove(request); 2275 if (nri.isRequest) { 2276 // Find all networks that are satisfying this request and remove the request 2277 // from their request lists. 2278 // TODO - it's my understanding that for a request there is only a single 2279 // network satisfying it, so this loop is wasteful 2280 boolean wasKept = false; 2281 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2282 if (nai.networkRequests.get(nri.request.requestId) != null) { 2283 nai.networkRequests.remove(nri.request.requestId); 2284 if (DBG) { 2285 log(" Removing from current network " + nai.name() + 2286 ", leaving " + nai.networkRequests.size() + 2287 " requests."); 2288 } 2289 if (unneeded(nai)) { 2290 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2291 teardownUnneededNetwork(nai); 2292 } else { 2293 // suspect there should only be one pass through here 2294 // but if any were kept do the check below 2295 wasKept |= true; 2296 } 2297 } 2298 } 2299 2300 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2301 if (nai != null) { 2302 mNetworkForRequestId.remove(nri.request.requestId); 2303 } 2304 // Maintain the illusion. When this request arrived, we might have pretended 2305 // that a network connected to serve it, even though the network was already 2306 // connected. Now that this request has gone away, we might have to pretend 2307 // that the network disconnected. LegacyTypeTracker will generate that 2308 // phantom disconnect for this type. 2309 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2310 boolean doRemove = true; 2311 if (wasKept) { 2312 // check if any of the remaining requests for this network are for the 2313 // same legacy type - if so, don't remove the nai 2314 for (int i = 0; i < nai.networkRequests.size(); i++) { 2315 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2316 if (otherRequest.legacyType == nri.request.legacyType && 2317 isRequest(otherRequest)) { 2318 if (DBG) log(" still have other legacy request - leaving"); 2319 doRemove = false; 2320 } 2321 } 2322 } 2323 2324 if (doRemove) { 2325 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2326 } 2327 } 2328 2329 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2330 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2331 nri.request); 2332 } 2333 } else { 2334 // listens don't have a singular affectedNetwork. Check all networks to see 2335 // if this listen request applies and remove it. 2336 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2337 nai.networkRequests.remove(nri.request.requestId); 2338 } 2339 } 2340 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2341 } 2342 } 2343 2344 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2345 enforceConnectivityInternalPermission(); 2346 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2347 accept ? 1 : 0, always ? 1: 0, network)); 2348 } 2349 2350 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2351 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2352 " accept=" + accept + " always=" + always); 2353 2354 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2355 if (nai == null) { 2356 // Nothing to do. 2357 return; 2358 } 2359 2360 if (nai.everValidated) { 2361 // The network validated while the dialog box was up. Take no action. 2362 return; 2363 } 2364 2365 if (!nai.networkMisc.explicitlySelected) { 2366 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2367 } 2368 2369 if (accept != nai.networkMisc.acceptUnvalidated) { 2370 int oldScore = nai.getCurrentScore(); 2371 nai.networkMisc.acceptUnvalidated = accept; 2372 rematchAllNetworksAndRequests(nai, oldScore); 2373 sendUpdatedScoreToFactories(nai); 2374 } 2375 2376 if (always) { 2377 nai.asyncChannel.sendMessage( 2378 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2379 } 2380 2381 if (!accept) { 2382 // Tell the NetworkAgent that the network does not have Internet access (because that's 2383 // what we just told the user). This will hint to Wi-Fi not to autojoin this network in 2384 // the future. We do this now because NetworkMonitor might not yet have finished 2385 // validating and thus we might not yet have received an EVENT_NETWORK_TESTED. 2386 nai.asyncChannel.sendMessage(NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2387 NetworkAgent.INVALID_NETWORK, 0, null); 2388 // TODO: Tear the network down once we have determined how to tell WifiStateMachine not 2389 // to reconnect to it immediately. http://b/20739299 2390 } 2391 2392 } 2393 2394 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2395 if (DBG) log("scheduleUnvalidatedPrompt " + nai.network); 2396 mHandler.sendMessageDelayed( 2397 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2398 PROMPT_UNVALIDATED_DELAY_MS); 2399 } 2400 2401 private void handlePromptUnvalidated(Network network) { 2402 if (DBG) log("handlePromptUnvalidated " + network); 2403 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2404 2405 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2406 // we haven't already been told to switch to it regardless of whether it validated or not. 2407 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2408 if (nai == null || nai.everValidated || nai.captivePortalDetected || 2409 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2410 return; 2411 } 2412 2413 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2414 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2415 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2416 intent.setClassName("com.android.settings", 2417 "com.android.settings.wifi.WifiNoInternetDialog"); 2418 2419 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2420 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2421 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2422 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent); 2423 } 2424 2425 private class InternalHandler extends Handler { 2426 public InternalHandler(Looper looper) { 2427 super(looper); 2428 } 2429 2430 @Override 2431 public void handleMessage(Message msg) { 2432 switch (msg.what) { 2433 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2434 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2435 String causedBy = null; 2436 synchronized (ConnectivityService.this) { 2437 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2438 mNetTransitionWakeLock.isHeld()) { 2439 mNetTransitionWakeLock.release(); 2440 causedBy = mNetTransitionWakeLockCausedBy; 2441 } else { 2442 break; 2443 } 2444 } 2445 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2446 log("Failed to find a new network - expiring NetTransition Wakelock"); 2447 } else { 2448 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2449 " cleared because we found a replacement network"); 2450 } 2451 break; 2452 } 2453 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2454 handleDeprecatedGlobalHttpProxy(); 2455 break; 2456 } 2457 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2458 Intent intent = (Intent)msg.obj; 2459 sendStickyBroadcast(intent); 2460 break; 2461 } 2462 case EVENT_PROXY_HAS_CHANGED: { 2463 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2464 break; 2465 } 2466 case EVENT_REGISTER_NETWORK_FACTORY: { 2467 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2468 break; 2469 } 2470 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2471 handleUnregisterNetworkFactory((Messenger)msg.obj); 2472 break; 2473 } 2474 case EVENT_REGISTER_NETWORK_AGENT: { 2475 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2476 break; 2477 } 2478 case EVENT_REGISTER_NETWORK_REQUEST: 2479 case EVENT_REGISTER_NETWORK_LISTENER: { 2480 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2481 break; 2482 } 2483 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: { 2484 handleRegisterNetworkRequestWithIntent(msg); 2485 break; 2486 } 2487 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2488 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2489 break; 2490 } 2491 case EVENT_RELEASE_NETWORK_REQUEST: { 2492 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2493 break; 2494 } 2495 case EVENT_SET_ACCEPT_UNVALIDATED: { 2496 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2497 break; 2498 } 2499 case EVENT_PROMPT_UNVALIDATED: { 2500 handlePromptUnvalidated((Network) msg.obj); 2501 break; 2502 } 2503 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2504 handleMobileDataAlwaysOn(); 2505 break; 2506 } 2507 case EVENT_SYSTEM_READY: { 2508 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2509 nai.networkMonitor.systemReady = true; 2510 } 2511 break; 2512 } 2513 } 2514 } 2515 } 2516 2517 // javadoc from interface 2518 public int tether(String iface) { 2519 ConnectivityManager.enforceTetherChangePermission(mContext); 2520 if (isTetheringSupported()) { 2521 return mTethering.tether(iface); 2522 } else { 2523 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2524 } 2525 } 2526 2527 // javadoc from interface 2528 public int untether(String iface) { 2529 ConnectivityManager.enforceTetherChangePermission(mContext); 2530 2531 if (isTetheringSupported()) { 2532 return mTethering.untether(iface); 2533 } else { 2534 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2535 } 2536 } 2537 2538 // javadoc from interface 2539 public int getLastTetherError(String iface) { 2540 enforceTetherAccessPermission(); 2541 2542 if (isTetheringSupported()) { 2543 return mTethering.getLastTetherError(iface); 2544 } else { 2545 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2546 } 2547 } 2548 2549 // TODO - proper iface API for selection by property, inspection, etc 2550 public String[] getTetherableUsbRegexs() { 2551 enforceTetherAccessPermission(); 2552 if (isTetheringSupported()) { 2553 return mTethering.getTetherableUsbRegexs(); 2554 } else { 2555 return new String[0]; 2556 } 2557 } 2558 2559 public String[] getTetherableWifiRegexs() { 2560 enforceTetherAccessPermission(); 2561 if (isTetheringSupported()) { 2562 return mTethering.getTetherableWifiRegexs(); 2563 } else { 2564 return new String[0]; 2565 } 2566 } 2567 2568 public String[] getTetherableBluetoothRegexs() { 2569 enforceTetherAccessPermission(); 2570 if (isTetheringSupported()) { 2571 return mTethering.getTetherableBluetoothRegexs(); 2572 } else { 2573 return new String[0]; 2574 } 2575 } 2576 2577 public int setUsbTethering(boolean enable) { 2578 ConnectivityManager.enforceTetherChangePermission(mContext); 2579 if (isTetheringSupported()) { 2580 return mTethering.setUsbTethering(enable); 2581 } else { 2582 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2583 } 2584 } 2585 2586 // TODO - move iface listing, queries, etc to new module 2587 // javadoc from interface 2588 public String[] getTetherableIfaces() { 2589 enforceTetherAccessPermission(); 2590 return mTethering.getTetherableIfaces(); 2591 } 2592 2593 public String[] getTetheredIfaces() { 2594 enforceTetherAccessPermission(); 2595 return mTethering.getTetheredIfaces(); 2596 } 2597 2598 public String[] getTetheringErroredIfaces() { 2599 enforceTetherAccessPermission(); 2600 return mTethering.getErroredIfaces(); 2601 } 2602 2603 public String[] getTetheredDhcpRanges() { 2604 enforceConnectivityInternalPermission(); 2605 return mTethering.getTetheredDhcpRanges(); 2606 } 2607 2608 // if ro.tether.denied = true we default to no tethering 2609 // gservices could set the secure setting to 1 though to enable it on a build where it 2610 // had previously been turned off. 2611 public boolean isTetheringSupported() { 2612 enforceTetherAccessPermission(); 2613 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2614 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2615 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2616 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2617 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2618 mTethering.getTetherableWifiRegexs().length != 0 || 2619 mTethering.getTetherableBluetoothRegexs().length != 0) && 2620 mTethering.getUpstreamIfaceTypes().length != 0); 2621 } 2622 2623 // Called when we lose the default network and have no replacement yet. 2624 // This will automatically be cleared after X seconds or a new default network 2625 // becomes CONNECTED, whichever happens first. The timer is started by the 2626 // first caller and not restarted by subsequent callers. 2627 private void requestNetworkTransitionWakelock(String forWhom) { 2628 int serialNum = 0; 2629 synchronized (this) { 2630 if (mNetTransitionWakeLock.isHeld()) return; 2631 serialNum = ++mNetTransitionWakeLockSerialNumber; 2632 mNetTransitionWakeLock.acquire(); 2633 mNetTransitionWakeLockCausedBy = forWhom; 2634 } 2635 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2636 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2637 mNetTransitionWakeLockTimeout); 2638 return; 2639 } 2640 2641 // 100 percent is full good, 0 is full bad. 2642 public void reportInetCondition(int networkType, int percentage) { 2643 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2644 if (nai == null) return; 2645 reportNetworkConnectivity(nai.network, percentage > 50); 2646 } 2647 2648 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2649 enforceAccessPermission(); 2650 enforceInternetPermission(); 2651 2652 NetworkAgentInfo nai; 2653 if (network == null) { 2654 nai = getDefaultNetwork(); 2655 } else { 2656 nai = getNetworkAgentInfoForNetwork(network); 2657 } 2658 if (nai == null) return; 2659 // Revalidate if the app report does not match our current validated state. 2660 if (hasConnectivity == nai.lastValidated) return; 2661 final int uid = Binder.getCallingUid(); 2662 if (DBG) { 2663 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2664 ") by " + uid); 2665 } 2666 synchronized (nai) { 2667 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2668 // which isn't meant to work on uncreated networks. 2669 if (!nai.created) return; 2670 2671 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2672 2673 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2674 } 2675 } 2676 2677 public void captivePortalAppResponse(Network network, int response, String actionToken) { 2678 if (response == ConnectivityManager.CAPTIVE_PORTAL_APP_RETURN_WANTED_AS_IS) { 2679 enforceConnectivityInternalPermission(); 2680 } 2681 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2682 if (nai == null) return; 2683 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_CAPTIVE_PORTAL_APP_FINISHED, response, 0, 2684 actionToken); 2685 } 2686 2687 private ProxyInfo getDefaultProxy() { 2688 // this information is already available as a world read/writable jvm property 2689 // so this API change wouldn't have a benifit. It also breaks the passing 2690 // of proxy info to all the JVMs. 2691 // enforceAccessPermission(); 2692 synchronized (mProxyLock) { 2693 ProxyInfo ret = mGlobalProxy; 2694 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2695 return ret; 2696 } 2697 } 2698 2699 public ProxyInfo getProxyForNetwork(Network network) { 2700 if (network == null) return getDefaultProxy(); 2701 final ProxyInfo globalProxy = getGlobalProxy(); 2702 if (globalProxy != null) return globalProxy; 2703 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2704 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2705 // caller may not have. 2706 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2707 if (nai == null) return null; 2708 synchronized (nai) { 2709 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2710 if (proxyInfo == null) return null; 2711 return new ProxyInfo(proxyInfo); 2712 } 2713 } 2714 2715 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2716 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2717 // proxy is null then there is no proxy in place). 2718 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2719 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2720 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2721 proxy = null; 2722 } 2723 return proxy; 2724 } 2725 2726 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2727 // better for determining if a new proxy broadcast is necessary: 2728 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2729 // avoid unnecessary broadcasts. 2730 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2731 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2732 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2733 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2734 // all set. 2735 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2736 a = canonicalizeProxyInfo(a); 2737 b = canonicalizeProxyInfo(b); 2738 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2739 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2740 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2741 } 2742 2743 public void setGlobalProxy(ProxyInfo proxyProperties) { 2744 enforceConnectivityInternalPermission(); 2745 2746 synchronized (mProxyLock) { 2747 if (proxyProperties == mGlobalProxy) return; 2748 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2749 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2750 2751 String host = ""; 2752 int port = 0; 2753 String exclList = ""; 2754 String pacFileUrl = ""; 2755 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2756 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2757 if (!proxyProperties.isValid()) { 2758 if (DBG) 2759 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2760 return; 2761 } 2762 mGlobalProxy = new ProxyInfo(proxyProperties); 2763 host = mGlobalProxy.getHost(); 2764 port = mGlobalProxy.getPort(); 2765 exclList = mGlobalProxy.getExclusionListAsString(); 2766 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2767 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2768 } 2769 } else { 2770 mGlobalProxy = null; 2771 } 2772 ContentResolver res = mContext.getContentResolver(); 2773 final long token = Binder.clearCallingIdentity(); 2774 try { 2775 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2776 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2777 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2778 exclList); 2779 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2780 } finally { 2781 Binder.restoreCallingIdentity(token); 2782 } 2783 2784 if (mGlobalProxy == null) { 2785 proxyProperties = mDefaultProxy; 2786 } 2787 sendProxyBroadcast(proxyProperties); 2788 } 2789 } 2790 2791 private void loadGlobalProxy() { 2792 ContentResolver res = mContext.getContentResolver(); 2793 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2794 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2795 String exclList = Settings.Global.getString(res, 2796 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2797 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2798 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2799 ProxyInfo proxyProperties; 2800 if (!TextUtils.isEmpty(pacFileUrl)) { 2801 proxyProperties = new ProxyInfo(pacFileUrl); 2802 } else { 2803 proxyProperties = new ProxyInfo(host, port, exclList); 2804 } 2805 if (!proxyProperties.isValid()) { 2806 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2807 return; 2808 } 2809 2810 synchronized (mProxyLock) { 2811 mGlobalProxy = proxyProperties; 2812 } 2813 } 2814 } 2815 2816 public ProxyInfo getGlobalProxy() { 2817 // this information is already available as a world read/writable jvm property 2818 // so this API change wouldn't have a benifit. It also breaks the passing 2819 // of proxy info to all the JVMs. 2820 // enforceAccessPermission(); 2821 synchronized (mProxyLock) { 2822 return mGlobalProxy; 2823 } 2824 } 2825 2826 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2827 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2828 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2829 proxy = null; 2830 } 2831 synchronized (mProxyLock) { 2832 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2833 if (mDefaultProxy == proxy) return; // catches repeated nulls 2834 if (proxy != null && !proxy.isValid()) { 2835 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2836 return; 2837 } 2838 2839 // This call could be coming from the PacManager, containing the port of the local 2840 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2841 // global (to get the correct local port), and send a broadcast. 2842 // TODO: Switch PacManager to have its own message to send back rather than 2843 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2844 if ((mGlobalProxy != null) && (proxy != null) 2845 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2846 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2847 mGlobalProxy = proxy; 2848 sendProxyBroadcast(mGlobalProxy); 2849 return; 2850 } 2851 mDefaultProxy = proxy; 2852 2853 if (mGlobalProxy != null) return; 2854 if (!mDefaultProxyDisabled) { 2855 sendProxyBroadcast(proxy); 2856 } 2857 } 2858 } 2859 2860 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2861 // This method gets called when any network changes proxy, but the broadcast only ever contains 2862 // the default proxy (even if it hasn't changed). 2863 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2864 // world where an app might be bound to a non-default network. 2865 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2866 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2867 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2868 2869 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2870 sendProxyBroadcast(getDefaultProxy()); 2871 } 2872 } 2873 2874 private void handleDeprecatedGlobalHttpProxy() { 2875 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2876 Settings.Global.HTTP_PROXY); 2877 if (!TextUtils.isEmpty(proxy)) { 2878 String data[] = proxy.split(":"); 2879 if (data.length == 0) { 2880 return; 2881 } 2882 2883 String proxyHost = data[0]; 2884 int proxyPort = 8080; 2885 if (data.length > 1) { 2886 try { 2887 proxyPort = Integer.parseInt(data[1]); 2888 } catch (NumberFormatException e) { 2889 return; 2890 } 2891 } 2892 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2893 setGlobalProxy(p); 2894 } 2895 } 2896 2897 private void sendProxyBroadcast(ProxyInfo proxy) { 2898 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2899 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2900 if (DBG) log("sending Proxy Broadcast for " + proxy); 2901 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2902 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2903 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2904 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2905 final long ident = Binder.clearCallingIdentity(); 2906 try { 2907 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2908 } finally { 2909 Binder.restoreCallingIdentity(ident); 2910 } 2911 } 2912 2913 private static class SettingsObserver extends ContentObserver { 2914 final private HashMap<Uri, Integer> mUriEventMap; 2915 final private Context mContext; 2916 final private Handler mHandler; 2917 2918 SettingsObserver(Context context, Handler handler) { 2919 super(null); 2920 mUriEventMap = new HashMap<Uri, Integer>(); 2921 mContext = context; 2922 mHandler = handler; 2923 } 2924 2925 void observe(Uri uri, int what) { 2926 mUriEventMap.put(uri, what); 2927 final ContentResolver resolver = mContext.getContentResolver(); 2928 resolver.registerContentObserver(uri, false, this); 2929 } 2930 2931 @Override 2932 public void onChange(boolean selfChange) { 2933 Slog.wtf(TAG, "Should never be reached."); 2934 } 2935 2936 @Override 2937 public void onChange(boolean selfChange, Uri uri) { 2938 final Integer what = mUriEventMap.get(uri); 2939 if (what != null) { 2940 mHandler.obtainMessage(what.intValue()).sendToTarget(); 2941 } else { 2942 loge("No matching event to send for URI=" + uri); 2943 } 2944 } 2945 } 2946 2947 private static void log(String s) { 2948 Slog.d(TAG, s); 2949 } 2950 2951 private static void loge(String s) { 2952 Slog.e(TAG, s); 2953 } 2954 2955 private static <T> T checkNotNull(T value, String message) { 2956 if (value == null) { 2957 throw new NullPointerException(message); 2958 } 2959 return value; 2960 } 2961 2962 /** 2963 * Prepare for a VPN application. 2964 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 2965 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 2966 * 2967 * @param oldPackage Package name of the application which currently controls VPN, which will 2968 * be replaced. If there is no such application, this should should either be 2969 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 2970 * @param newPackage Package name of the application which should gain control of VPN, or 2971 * {@code null} to disable. 2972 * @param userId User for whom to prepare the new VPN. 2973 * 2974 * @hide 2975 */ 2976 @Override 2977 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 2978 int userId) { 2979 enforceCrossUserPermission(userId); 2980 throwIfLockdownEnabled(); 2981 2982 synchronized(mVpns) { 2983 Vpn vpn = mVpns.get(userId); 2984 if (vpn != null) { 2985 return vpn.prepare(oldPackage, newPackage); 2986 } else { 2987 return false; 2988 } 2989 } 2990 } 2991 2992 /** 2993 * Set whether the VPN package has the ability to launch VPNs without user intervention. 2994 * This method is used by system-privileged apps. 2995 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 2996 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 2997 * 2998 * @param packageName The package for which authorization state should change. 2999 * @param userId User for whom {@code packageName} is installed. 3000 * @param authorized {@code true} if this app should be able to start a VPN connection without 3001 * explicit user approval, {@code false} if not. 3002 * 3003 * @hide 3004 */ 3005 @Override 3006 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3007 enforceCrossUserPermission(userId); 3008 3009 synchronized(mVpns) { 3010 Vpn vpn = mVpns.get(userId); 3011 if (vpn != null) { 3012 vpn.setPackageAuthorization(packageName, authorized); 3013 } 3014 } 3015 } 3016 3017 /** 3018 * Configure a TUN interface and return its file descriptor. Parameters 3019 * are encoded and opaque to this class. This method is used by VpnBuilder 3020 * and not available in ConnectivityManager. Permissions are checked in 3021 * Vpn class. 3022 * @hide 3023 */ 3024 @Override 3025 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3026 throwIfLockdownEnabled(); 3027 int user = UserHandle.getUserId(Binder.getCallingUid()); 3028 synchronized(mVpns) { 3029 return mVpns.get(user).establish(config); 3030 } 3031 } 3032 3033 /** 3034 * Start legacy VPN, controlling native daemons as needed. Creates a 3035 * secondary thread to perform connection work, returning quickly. 3036 */ 3037 @Override 3038 public void startLegacyVpn(VpnProfile profile) { 3039 throwIfLockdownEnabled(); 3040 final LinkProperties egress = getActiveLinkProperties(); 3041 if (egress == null) { 3042 throw new IllegalStateException("Missing active network connection"); 3043 } 3044 int user = UserHandle.getUserId(Binder.getCallingUid()); 3045 synchronized(mVpns) { 3046 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3047 } 3048 } 3049 3050 /** 3051 * Return the information of the ongoing legacy VPN. This method is used 3052 * by VpnSettings and not available in ConnectivityManager. Permissions 3053 * are checked in Vpn class. 3054 */ 3055 @Override 3056 public LegacyVpnInfo getLegacyVpnInfo() { 3057 throwIfLockdownEnabled(); 3058 int user = UserHandle.getUserId(Binder.getCallingUid()); 3059 synchronized(mVpns) { 3060 return mVpns.get(user).getLegacyVpnInfo(); 3061 } 3062 } 3063 3064 /** 3065 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3066 * and not available in ConnectivityManager. 3067 */ 3068 @Override 3069 public VpnInfo[] getAllVpnInfo() { 3070 enforceConnectivityInternalPermission(); 3071 if (mLockdownEnabled) { 3072 return new VpnInfo[0]; 3073 } 3074 3075 synchronized(mVpns) { 3076 List<VpnInfo> infoList = new ArrayList<>(); 3077 for (int i = 0; i < mVpns.size(); i++) { 3078 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3079 if (info != null) { 3080 infoList.add(info); 3081 } 3082 } 3083 return infoList.toArray(new VpnInfo[infoList.size()]); 3084 } 3085 } 3086 3087 /** 3088 * @return VPN information for accounting, or null if we can't retrieve all required 3089 * information, e.g primary underlying iface. 3090 */ 3091 @Nullable 3092 private VpnInfo createVpnInfo(Vpn vpn) { 3093 VpnInfo info = vpn.getVpnInfo(); 3094 if (info == null) { 3095 return null; 3096 } 3097 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3098 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3099 // the underlyingNetworks list. 3100 if (underlyingNetworks == null) { 3101 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3102 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3103 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3104 } 3105 } else if (underlyingNetworks.length > 0) { 3106 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3107 if (linkProperties != null) { 3108 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3109 } 3110 } 3111 return info.primaryUnderlyingIface == null ? null : info; 3112 } 3113 3114 /** 3115 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3116 * VpnDialogs and not available in ConnectivityManager. 3117 * Permissions are checked in Vpn class. 3118 * @hide 3119 */ 3120 @Override 3121 public VpnConfig getVpnConfig(int userId) { 3122 enforceCrossUserPermission(userId); 3123 synchronized(mVpns) { 3124 Vpn vpn = mVpns.get(userId); 3125 if (vpn != null) { 3126 return vpn.getVpnConfig(); 3127 } else { 3128 return null; 3129 } 3130 } 3131 } 3132 3133 @Override 3134 public boolean updateLockdownVpn() { 3135 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3136 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3137 return false; 3138 } 3139 3140 // Tear down existing lockdown if profile was removed 3141 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3142 if (mLockdownEnabled) { 3143 if (!mKeyStore.isUnlocked()) { 3144 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3145 return false; 3146 } 3147 3148 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3149 final VpnProfile profile = VpnProfile.decode( 3150 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3151 int user = UserHandle.getUserId(Binder.getCallingUid()); 3152 synchronized(mVpns) { 3153 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3154 profile)); 3155 } 3156 } else { 3157 setLockdownTracker(null); 3158 } 3159 3160 return true; 3161 } 3162 3163 /** 3164 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3165 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3166 */ 3167 private void setLockdownTracker(LockdownVpnTracker tracker) { 3168 // Shutdown any existing tracker 3169 final LockdownVpnTracker existing = mLockdownTracker; 3170 mLockdownTracker = null; 3171 if (existing != null) { 3172 existing.shutdown(); 3173 } 3174 3175 try { 3176 if (tracker != null) { 3177 mNetd.setFirewallEnabled(true); 3178 mNetd.setFirewallInterfaceRule("lo", true); 3179 mLockdownTracker = tracker; 3180 mLockdownTracker.init(); 3181 } else { 3182 mNetd.setFirewallEnabled(false); 3183 } 3184 } catch (RemoteException e) { 3185 // ignored; NMS lives inside system_server 3186 } 3187 } 3188 3189 private void throwIfLockdownEnabled() { 3190 if (mLockdownEnabled) { 3191 throw new IllegalStateException("Unavailable in lockdown mode"); 3192 } 3193 } 3194 3195 @Override 3196 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3197 // TODO: Remove? Any reason to trigger a provisioning check? 3198 return -1; 3199 } 3200 3201 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3202 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3203 3204 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3205 if (DBG) { 3206 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3207 + " action=" + action); 3208 } 3209 Intent intent = new Intent(action); 3210 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3211 // Concatenate the range of types onto the range of NetIDs. 3212 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3213 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3214 networkType, null, pendingIntent); 3215 } 3216 3217 /** 3218 * Show or hide network provisioning notifications. 3219 * 3220 * We use notifications for two purposes: to notify that a network requires sign in 3221 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3222 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3223 * particular network we can display the notification type that was most recently requested. 3224 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3225 * might first display NO_INTERNET, and then when the captive portal check completes, display 3226 * SIGN_IN. 3227 * 3228 * @param id an identifier that uniquely identifies this notification. This must match 3229 * between show and hide calls. We use the NetID value but for legacy callers 3230 * we concatenate the range of types with the range of NetIDs. 3231 */ 3232 private void setProvNotificationVisibleIntent(boolean visible, int id, 3233 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent) { 3234 if (DBG) { 3235 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3236 + " networkType=" + getNetworkTypeName(networkType) 3237 + " extraInfo=" + extraInfo); 3238 } 3239 3240 Resources r = Resources.getSystem(); 3241 NotificationManager notificationManager = (NotificationManager) mContext 3242 .getSystemService(Context.NOTIFICATION_SERVICE); 3243 3244 if (visible) { 3245 CharSequence title; 3246 CharSequence details; 3247 int icon; 3248 if (notifyType == NotificationType.NO_INTERNET && 3249 networkType == ConnectivityManager.TYPE_WIFI) { 3250 title = r.getString(R.string.wifi_no_internet, 0); 3251 details = r.getString(R.string.wifi_no_internet_detailed); 3252 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3253 } else if (notifyType == NotificationType.SIGN_IN) { 3254 switch (networkType) { 3255 case ConnectivityManager.TYPE_WIFI: 3256 title = r.getString(R.string.wifi_available_sign_in, 0); 3257 details = r.getString(R.string.network_available_sign_in_detailed, 3258 extraInfo); 3259 icon = R.drawable.stat_notify_wifi_in_range; 3260 break; 3261 case ConnectivityManager.TYPE_MOBILE: 3262 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3263 title = r.getString(R.string.network_available_sign_in, 0); 3264 // TODO: Change this to pull from NetworkInfo once a printable 3265 // name has been added to it 3266 details = mTelephonyManager.getNetworkOperatorName(); 3267 icon = R.drawable.stat_notify_rssi_in_range; 3268 break; 3269 default: 3270 title = r.getString(R.string.network_available_sign_in, 0); 3271 details = r.getString(R.string.network_available_sign_in_detailed, 3272 extraInfo); 3273 icon = R.drawable.stat_notify_rssi_in_range; 3274 break; 3275 } 3276 } else { 3277 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3278 + getNetworkTypeName(networkType)); 3279 return; 3280 } 3281 3282 Notification notification = new Notification.Builder(mContext) 3283 .setWhen(0) 3284 .setSmallIcon(icon) 3285 .setAutoCancel(true) 3286 .setTicker(title) 3287 .setColor(mContext.getColor( 3288 com.android.internal.R.color.system_notification_accent_color)) 3289 .setContentTitle(title) 3290 .setContentText(details) 3291 .setContentIntent(intent) 3292 .build(); 3293 3294 try { 3295 notificationManager.notify(NOTIFICATION_ID, id, notification); 3296 } catch (NullPointerException npe) { 3297 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3298 npe.printStackTrace(); 3299 } 3300 } else { 3301 try { 3302 notificationManager.cancel(NOTIFICATION_ID, id); 3303 } catch (NullPointerException npe) { 3304 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3305 npe.printStackTrace(); 3306 } 3307 } 3308 } 3309 3310 /** Location to an updatable file listing carrier provisioning urls. 3311 * An example: 3312 * 3313 * <?xml version="1.0" encoding="utf-8"?> 3314 * <provisioningUrls> 3315 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3316 * </provisioningUrls> 3317 */ 3318 private static final String PROVISIONING_URL_PATH = 3319 "/data/misc/radio/provisioning_urls.xml"; 3320 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3321 3322 /** XML tag for root element. */ 3323 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3324 /** XML tag for individual url */ 3325 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3326 /** XML attribute for mcc */ 3327 private static final String ATTR_MCC = "mcc"; 3328 /** XML attribute for mnc */ 3329 private static final String ATTR_MNC = "mnc"; 3330 3331 private String getProvisioningUrlBaseFromFile() { 3332 FileReader fileReader = null; 3333 XmlPullParser parser = null; 3334 Configuration config = mContext.getResources().getConfiguration(); 3335 3336 try { 3337 fileReader = new FileReader(mProvisioningUrlFile); 3338 parser = Xml.newPullParser(); 3339 parser.setInput(fileReader); 3340 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3341 3342 while (true) { 3343 XmlUtils.nextElement(parser); 3344 3345 String element = parser.getName(); 3346 if (element == null) break; 3347 3348 if (element.equals(TAG_PROVISIONING_URL)) { 3349 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3350 try { 3351 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3352 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3353 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3354 parser.next(); 3355 if (parser.getEventType() == XmlPullParser.TEXT) { 3356 return parser.getText(); 3357 } 3358 } 3359 } 3360 } catch (NumberFormatException e) { 3361 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3362 } 3363 } 3364 } 3365 return null; 3366 } catch (FileNotFoundException e) { 3367 loge("Carrier Provisioning Urls file not found"); 3368 } catch (XmlPullParserException e) { 3369 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3370 } catch (IOException e) { 3371 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3372 } finally { 3373 if (fileReader != null) { 3374 try { 3375 fileReader.close(); 3376 } catch (IOException e) {} 3377 } 3378 } 3379 return null; 3380 } 3381 3382 @Override 3383 public String getMobileProvisioningUrl() { 3384 enforceConnectivityInternalPermission(); 3385 String url = getProvisioningUrlBaseFromFile(); 3386 if (TextUtils.isEmpty(url)) { 3387 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3388 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3389 } else { 3390 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3391 } 3392 // populate the iccid, imei and phone number in the provisioning url. 3393 if (!TextUtils.isEmpty(url)) { 3394 String phoneNumber = mTelephonyManager.getLine1Number(); 3395 if (TextUtils.isEmpty(phoneNumber)) { 3396 phoneNumber = "0000000000"; 3397 } 3398 url = String.format(url, 3399 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3400 mTelephonyManager.getDeviceId() /* IMEI */, 3401 phoneNumber /* Phone numer */); 3402 } 3403 3404 return url; 3405 } 3406 3407 @Override 3408 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3409 String action) { 3410 enforceConnectivityInternalPermission(); 3411 final long ident = Binder.clearCallingIdentity(); 3412 try { 3413 setProvNotificationVisible(visible, networkType, action); 3414 } finally { 3415 Binder.restoreCallingIdentity(ident); 3416 } 3417 } 3418 3419 @Override 3420 public void setAirplaneMode(boolean enable) { 3421 enforceConnectivityInternalPermission(); 3422 final long ident = Binder.clearCallingIdentity(); 3423 try { 3424 final ContentResolver cr = mContext.getContentResolver(); 3425 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3426 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3427 intent.putExtra("state", enable); 3428 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3429 } finally { 3430 Binder.restoreCallingIdentity(ident); 3431 } 3432 } 3433 3434 private void onUserStart(int userId) { 3435 synchronized(mVpns) { 3436 Vpn userVpn = mVpns.get(userId); 3437 if (userVpn != null) { 3438 loge("Starting user already has a VPN"); 3439 return; 3440 } 3441 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3442 mVpns.put(userId, userVpn); 3443 } 3444 } 3445 3446 private void onUserStop(int userId) { 3447 synchronized(mVpns) { 3448 Vpn userVpn = mVpns.get(userId); 3449 if (userVpn == null) { 3450 loge("Stopping user has no VPN"); 3451 return; 3452 } 3453 mVpns.delete(userId); 3454 } 3455 } 3456 3457 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3458 @Override 3459 public void onReceive(Context context, Intent intent) { 3460 final String action = intent.getAction(); 3461 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3462 if (userId == UserHandle.USER_NULL) return; 3463 3464 if (Intent.ACTION_USER_STARTING.equals(action)) { 3465 onUserStart(userId); 3466 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3467 onUserStop(userId); 3468 } 3469 } 3470 }; 3471 3472 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3473 new HashMap<Messenger, NetworkFactoryInfo>(); 3474 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3475 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3476 3477 private static class NetworkFactoryInfo { 3478 public final String name; 3479 public final Messenger messenger; 3480 public final AsyncChannel asyncChannel; 3481 3482 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3483 this.name = name; 3484 this.messenger = messenger; 3485 this.asyncChannel = asyncChannel; 3486 } 3487 } 3488 3489 /** 3490 * Tracks info about the requester. 3491 * Also used to notice when the calling process dies so we can self-expire 3492 */ 3493 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3494 static final boolean REQUEST = true; 3495 static final boolean LISTEN = false; 3496 3497 final NetworkRequest request; 3498 final PendingIntent mPendingIntent; 3499 boolean mPendingIntentSent; 3500 private final IBinder mBinder; 3501 final int mPid; 3502 final int mUid; 3503 final Messenger messenger; 3504 final boolean isRequest; 3505 3506 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3507 request = r; 3508 mPendingIntent = pi; 3509 messenger = null; 3510 mBinder = null; 3511 mPid = getCallingPid(); 3512 mUid = getCallingUid(); 3513 this.isRequest = isRequest; 3514 } 3515 3516 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3517 super(); 3518 messenger = m; 3519 request = r; 3520 mBinder = binder; 3521 mPid = getCallingPid(); 3522 mUid = getCallingUid(); 3523 this.isRequest = isRequest; 3524 mPendingIntent = null; 3525 3526 try { 3527 mBinder.linkToDeath(this, 0); 3528 } catch (RemoteException e) { 3529 binderDied(); 3530 } 3531 } 3532 3533 void unlinkDeathRecipient() { 3534 if (mBinder != null) { 3535 mBinder.unlinkToDeath(this, 0); 3536 } 3537 } 3538 3539 public void binderDied() { 3540 log("ConnectivityService NetworkRequestInfo binderDied(" + 3541 request + ", " + mBinder + ")"); 3542 releaseNetworkRequest(request); 3543 } 3544 3545 public String toString() { 3546 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3547 mPid + " for " + request + 3548 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3549 } 3550 } 3551 3552 @Override 3553 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3554 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3555 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3556 enforceNetworkRequestPermissions(networkCapabilities); 3557 enforceMeteredApnPolicy(networkCapabilities); 3558 3559 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3560 throw new IllegalArgumentException("Bad timeout specified"); 3561 } 3562 3563 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3564 nextNetworkRequestId()); 3565 if (DBG) log("requestNetwork for " + networkRequest); 3566 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3567 NetworkRequestInfo.REQUEST); 3568 3569 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3570 if (timeoutMs > 0) { 3571 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3572 nri), timeoutMs); 3573 } 3574 return networkRequest; 3575 } 3576 3577 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3578 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3579 enforceConnectivityInternalPermission(); 3580 } else { 3581 enforceChangePermission(); 3582 } 3583 } 3584 3585 @Override 3586 public boolean requestBandwidthUpdate(Network network) { 3587 enforceAccessPermission(); 3588 NetworkAgentInfo nai = null; 3589 if (network == null) { 3590 return false; 3591 } 3592 synchronized (mNetworkForNetId) { 3593 nai = mNetworkForNetId.get(network.netId); 3594 } 3595 if (nai != null) { 3596 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3597 return true; 3598 } 3599 return false; 3600 } 3601 3602 3603 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3604 // if UID is restricted, don't allow them to bring up metered APNs 3605 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3606 final int uidRules; 3607 final int uid = Binder.getCallingUid(); 3608 synchronized(mRulesLock) { 3609 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3610 } 3611 if ((uidRules & (RULE_REJECT_METERED | RULE_REJECT_ALL)) != 0) { 3612 // we could silently fail or we can filter the available nets to only give 3613 // them those they have access to. Chose the more useful 3614 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3615 } 3616 } 3617 } 3618 3619 @Override 3620 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3621 PendingIntent operation) { 3622 checkNotNull(operation, "PendingIntent cannot be null."); 3623 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3624 enforceNetworkRequestPermissions(networkCapabilities); 3625 enforceMeteredApnPolicy(networkCapabilities); 3626 3627 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3628 nextNetworkRequestId()); 3629 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3630 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3631 NetworkRequestInfo.REQUEST); 3632 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3633 nri)); 3634 return networkRequest; 3635 } 3636 3637 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3638 mHandler.sendMessageDelayed( 3639 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3640 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3641 } 3642 3643 @Override 3644 public void releasePendingNetworkRequest(PendingIntent operation) { 3645 checkNotNull(operation, "PendingIntent cannot be null."); 3646 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3647 getCallingUid(), 0, operation)); 3648 } 3649 3650 // In order to implement the compatibility measure for pre-M apps that call 3651 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3652 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3653 // This ensures it has permission to do so. 3654 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3655 if (nc == null) { 3656 return false; 3657 } 3658 int[] transportTypes = nc.getTransportTypes(); 3659 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3660 return false; 3661 } 3662 try { 3663 mContext.enforceCallingOrSelfPermission( 3664 android.Manifest.permission.ACCESS_WIFI_STATE, 3665 "ConnectivityService"); 3666 } catch (SecurityException e) { 3667 return false; 3668 } 3669 return true; 3670 } 3671 3672 @Override 3673 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3674 Messenger messenger, IBinder binder) { 3675 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3676 enforceAccessPermission(); 3677 } 3678 3679 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3680 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3681 if (DBG) log("listenForNetwork for " + networkRequest); 3682 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3683 NetworkRequestInfo.LISTEN); 3684 3685 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3686 return networkRequest; 3687 } 3688 3689 @Override 3690 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3691 PendingIntent operation) { 3692 } 3693 3694 @Override 3695 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3696 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3697 0, networkRequest)); 3698 } 3699 3700 @Override 3701 public void registerNetworkFactory(Messenger messenger, String name) { 3702 enforceConnectivityInternalPermission(); 3703 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3704 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3705 } 3706 3707 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3708 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3709 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3710 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3711 } 3712 3713 @Override 3714 public void unregisterNetworkFactory(Messenger messenger) { 3715 enforceConnectivityInternalPermission(); 3716 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3717 } 3718 3719 private void handleUnregisterNetworkFactory(Messenger messenger) { 3720 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3721 if (nfi == null) { 3722 loge("Failed to find Messenger in unregisterNetworkFactory"); 3723 return; 3724 } 3725 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3726 } 3727 3728 /** 3729 * NetworkAgentInfo supporting a request by requestId. 3730 * These have already been vetted (their Capabilities satisfy the request) 3731 * and the are the highest scored network available. 3732 * the are keyed off the Requests requestId. 3733 */ 3734 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 3735 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3736 new SparseArray<NetworkAgentInfo>(); 3737 3738 // NOTE: Accessed on multiple threads, must be synchronized on itself. 3739 @GuardedBy("mNetworkForNetId") 3740 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3741 new SparseArray<NetworkAgentInfo>(); 3742 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 3743 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 3744 // there may not be a strict 1:1 correlation between the two. 3745 @GuardedBy("mNetworkForNetId") 3746 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 3747 3748 // NetworkAgentInfo keyed off its connecting messenger 3749 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3750 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 3751 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3752 new HashMap<Messenger, NetworkAgentInfo>(); 3753 3754 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3755 private final NetworkRequest mDefaultRequest; 3756 3757 // Request used to optionally keep mobile data active even when higher 3758 // priority networks like Wi-Fi are active. 3759 private final NetworkRequest mDefaultMobileDataRequest; 3760 3761 private NetworkAgentInfo getDefaultNetwork() { 3762 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3763 } 3764 3765 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3766 return nai == getDefaultNetwork(); 3767 } 3768 3769 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3770 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3771 int currentScore, NetworkMisc networkMisc) { 3772 enforceConnectivityInternalPermission(); 3773 3774 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3775 // satisfies mDefaultRequest. 3776 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3777 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 3778 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 3779 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest); 3780 synchronized (this) { 3781 nai.networkMonitor.systemReady = mSystemReady; 3782 } 3783 if (DBG) log("registerNetworkAgent " + nai); 3784 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3785 return nai.network.netId; 3786 } 3787 3788 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3789 if (VDBG) log("Got NetworkAgent Messenger"); 3790 mNetworkAgentInfos.put(na.messenger, na); 3791 synchronized (mNetworkForNetId) { 3792 mNetworkForNetId.put(na.network.netId, na); 3793 } 3794 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3795 NetworkInfo networkInfo = na.networkInfo; 3796 na.networkInfo = null; 3797 updateNetworkInfo(na, networkInfo); 3798 } 3799 3800 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3801 LinkProperties newLp = networkAgent.linkProperties; 3802 int netId = networkAgent.network.netId; 3803 3804 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3805 // we do anything else, make sure its LinkProperties are accurate. 3806 if (networkAgent.clatd != null) { 3807 networkAgent.clatd.fixupLinkProperties(oldLp); 3808 } 3809 3810 updateInterfaces(newLp, oldLp, netId); 3811 updateMtu(newLp, oldLp); 3812 // TODO - figure out what to do for clat 3813// for (LinkProperties lp : newLp.getStackedLinks()) { 3814// updateMtu(lp, null); 3815// } 3816 updateTcpBufferSizes(networkAgent); 3817 3818 // TODO: deprecate and remove mDefaultDns when we can do so safely. See http://b/18327075 3819 // In L, we used it only when the network had Internet access but provided no DNS servers. 3820 // For now, just disable it, and if disabling it doesn't break things, remove it. 3821 // final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3822 // NET_CAPABILITY_INTERNET); 3823 final boolean useDefaultDns = false; 3824 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3825 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3826 3827 updateClat(newLp, oldLp, networkAgent); 3828 if (isDefaultNetwork(networkAgent)) { 3829 handleApplyDefaultProxy(newLp.getHttpProxy()); 3830 } else { 3831 updateProxy(newLp, oldLp, networkAgent); 3832 } 3833 // TODO - move this check to cover the whole function 3834 if (!Objects.equals(newLp, oldLp)) { 3835 notifyIfacesChanged(); 3836 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3837 } 3838 } 3839 3840 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3841 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3842 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3843 3844 if (!wasRunningClat && shouldRunClat) { 3845 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3846 nai.clatd.start(); 3847 } else if (wasRunningClat && !shouldRunClat) { 3848 nai.clatd.stop(); 3849 } 3850 } 3851 3852 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3853 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3854 if (oldLp != null) { 3855 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3856 } else if (newLp != null) { 3857 interfaceDiff.added = newLp.getAllInterfaceNames(); 3858 } 3859 for (String iface : interfaceDiff.added) { 3860 try { 3861 if (DBG) log("Adding iface " + iface + " to network " + netId); 3862 mNetd.addInterfaceToNetwork(iface, netId); 3863 } catch (Exception e) { 3864 loge("Exception adding interface: " + e); 3865 } 3866 } 3867 for (String iface : interfaceDiff.removed) { 3868 try { 3869 if (DBG) log("Removing iface " + iface + " from network " + netId); 3870 mNetd.removeInterfaceFromNetwork(iface, netId); 3871 } catch (Exception e) { 3872 loge("Exception removing interface: " + e); 3873 } 3874 } 3875 } 3876 3877 /** 3878 * Have netd update routes from oldLp to newLp. 3879 * @return true if routes changed between oldLp and newLp 3880 */ 3881 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3882 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3883 if (oldLp != null) { 3884 routeDiff = oldLp.compareAllRoutes(newLp); 3885 } else if (newLp != null) { 3886 routeDiff.added = newLp.getAllRoutes(); 3887 } 3888 3889 // add routes before removing old in case it helps with continuous connectivity 3890 3891 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3892 for (RouteInfo route : routeDiff.added) { 3893 if (route.hasGateway()) continue; 3894 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3895 try { 3896 mNetd.addRoute(netId, route); 3897 } catch (Exception e) { 3898 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3899 loge("Exception in addRoute for non-gateway: " + e); 3900 } 3901 } 3902 } 3903 for (RouteInfo route : routeDiff.added) { 3904 if (route.hasGateway() == false) continue; 3905 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3906 try { 3907 mNetd.addRoute(netId, route); 3908 } catch (Exception e) { 3909 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3910 loge("Exception in addRoute for gateway: " + e); 3911 } 3912 } 3913 } 3914 3915 for (RouteInfo route : routeDiff.removed) { 3916 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3917 try { 3918 mNetd.removeRoute(netId, route); 3919 } catch (Exception e) { 3920 loge("Exception in removeRoute: " + e); 3921 } 3922 } 3923 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3924 } 3925 3926 // TODO: investigate moving this into LinkProperties, if only to make more accurate 3927 // the isProvisioned() checks. 3928 private static Collection<InetAddress> getLikelyReachableDnsServers(LinkProperties lp) { 3929 final ArrayList<InetAddress> dnsServers = new ArrayList<InetAddress>(); 3930 final List<RouteInfo> allRoutes = lp.getAllRoutes(); 3931 for (InetAddress nameserver : lp.getDnsServers()) { 3932 // If the LinkProperties doesn't include a route to the nameserver, ignore it. 3933 final RouteInfo bestRoute = RouteInfo.selectBestRoute(allRoutes, nameserver); 3934 if (bestRoute == null) { 3935 continue; 3936 } 3937 3938 // TODO: better source address evaluation for destination addresses. 3939 if (nameserver instanceof Inet4Address) { 3940 if (!lp.hasIPv4Address()) { 3941 continue; 3942 } 3943 } else if (nameserver instanceof Inet6Address) { 3944 if (nameserver.isLinkLocalAddress()) { 3945 if (((Inet6Address)nameserver).getScopeId() == 0) { 3946 // For now, just make sure link-local DNS servers have 3947 // scopedIds set, since DNS lookups will fail otherwise. 3948 // TODO: verify the scopeId matches that of lp's interface. 3949 continue; 3950 } 3951 } else { 3952 if (bestRoute.isIPv6Default() && !lp.hasGlobalIPv6Address()) { 3953 // TODO: reconsider all corner cases (disconnected ULA networks, ...). 3954 continue; 3955 } 3956 } 3957 } 3958 3959 dnsServers.add(nameserver); 3960 } 3961 return Collections.unmodifiableList(dnsServers); 3962 } 3963 3964 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 3965 boolean flush, boolean useDefaultDns) { 3966 // TODO: consider comparing the getLikelyReachableDnsServers() lists, in case the 3967 // route to a DNS server has been removed (only really applicable in special cases 3968 // where there is no default route). 3969 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 3970 Collection<InetAddress> dnses = getLikelyReachableDnsServers(newLp); 3971 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 3972 dnses = new ArrayList(); 3973 dnses.add(mDefaultDns); 3974 if (DBG) { 3975 loge("no dns provided for netId " + netId + ", so using defaults"); 3976 } 3977 } 3978 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 3979 try { 3980 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 3981 newLp.getDomains()); 3982 } catch (Exception e) { 3983 loge("Exception in setDnsServersForNetwork: " + e); 3984 } 3985 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 3986 if (defaultNai != null && defaultNai.network.netId == netId) { 3987 setDefaultDnsSystemProperties(dnses); 3988 } 3989 flushVmDnsCache(); 3990 } else if (flush) { 3991 try { 3992 mNetd.flushNetworkDnsCache(netId); 3993 } catch (Exception e) { 3994 loge("Exception in flushNetworkDnsCache: " + e); 3995 } 3996 flushVmDnsCache(); 3997 } 3998 } 3999 4000 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4001 int last = 0; 4002 for (InetAddress dns : dnses) { 4003 ++last; 4004 String key = "net.dns" + last; 4005 String value = dns.getHostAddress(); 4006 SystemProperties.set(key, value); 4007 } 4008 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4009 String key = "net.dns" + i; 4010 SystemProperties.set(key, ""); 4011 } 4012 mNumDnsEntries = last; 4013 } 4014 4015 private void updateCapabilities(NetworkAgentInfo networkAgent, 4016 NetworkCapabilities networkCapabilities) { 4017 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 4018 synchronized (networkAgent) { 4019 networkAgent.networkCapabilities = networkCapabilities; 4020 } 4021 if (networkAgent.lastValidated) { 4022 networkAgent.networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4023 // There's no need to remove the capability if we think the network is unvalidated, 4024 // because NetworkAgents don't set the validated capability. 4025 } 4026 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 4027 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 4028 } 4029 } 4030 4031 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4032 for (int i = 0; i < nai.networkRequests.size(); i++) { 4033 NetworkRequest nr = nai.networkRequests.valueAt(i); 4034 // Don't send listening requests to factories. b/17393458 4035 if (!isRequest(nr)) continue; 4036 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4037 } 4038 } 4039 4040 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4041 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4042 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4043 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4044 networkRequest); 4045 } 4046 } 4047 4048 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4049 int notificationType) { 4050 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4051 Intent intent = new Intent(); 4052 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4053 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4054 nri.mPendingIntentSent = true; 4055 sendIntent(nri.mPendingIntent, intent); 4056 } 4057 // else not handled 4058 } 4059 4060 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4061 mPendingIntentWakeLock.acquire(); 4062 try { 4063 if (DBG) log("Sending " + pendingIntent); 4064 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4065 } catch (PendingIntent.CanceledException e) { 4066 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4067 mPendingIntentWakeLock.release(); 4068 releasePendingNetworkRequest(pendingIntent); 4069 } 4070 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4071 } 4072 4073 @Override 4074 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4075 String resultData, Bundle resultExtras) { 4076 if (DBG) log("Finished sending " + pendingIntent); 4077 mPendingIntentWakeLock.release(); 4078 // Release with a delay so the receiving client has an opportunity to put in its 4079 // own request. 4080 releasePendingNetworkRequestWithDelay(pendingIntent); 4081 } 4082 4083 private void callCallbackForRequest(NetworkRequestInfo nri, 4084 NetworkAgentInfo networkAgent, int notificationType) { 4085 if (nri.messenger == null) return; // Default request has no msgr 4086 Bundle bundle = new Bundle(); 4087 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4088 new NetworkRequest(nri.request)); 4089 Message msg = Message.obtain(); 4090 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4091 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4092 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4093 } 4094 switch (notificationType) { 4095 case ConnectivityManager.CALLBACK_LOSING: { 4096 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4097 break; 4098 } 4099 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4100 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4101 new NetworkCapabilities(networkAgent.networkCapabilities)); 4102 break; 4103 } 4104 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4105 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4106 new LinkProperties(networkAgent.linkProperties)); 4107 break; 4108 } 4109 } 4110 msg.what = notificationType; 4111 msg.setData(bundle); 4112 try { 4113 if (VDBG) { 4114 log("sending notification " + notifyTypeToName(notificationType) + 4115 " for " + nri.request); 4116 } 4117 nri.messenger.send(msg); 4118 } catch (RemoteException e) { 4119 // may occur naturally in the race of binder death. 4120 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4121 } 4122 } 4123 4124 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4125 for (int i = 0; i < nai.networkRequests.size(); i++) { 4126 NetworkRequest nr = nai.networkRequests.valueAt(i); 4127 // Ignore listening requests. 4128 if (!isRequest(nr)) continue; 4129 loge("Dead network still had at least " + nr); 4130 break; 4131 } 4132 nai.asyncChannel.disconnect(); 4133 } 4134 4135 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4136 if (oldNetwork == null) { 4137 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4138 return; 4139 } 4140 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4141 teardownUnneededNetwork(oldNetwork); 4142 } 4143 4144 private void makeDefault(NetworkAgentInfo newNetwork) { 4145 if (DBG) log("Switching to new default network: " + newNetwork); 4146 setupDataActivityTracking(newNetwork); 4147 try { 4148 mNetd.setDefaultNetId(newNetwork.network.netId); 4149 } catch (Exception e) { 4150 loge("Exception setting default network :" + e); 4151 } 4152 notifyLockdownVpn(newNetwork); 4153 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4154 updateTcpBufferSizes(newNetwork); 4155 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4156 } 4157 4158 // Handles a network appearing or improving its score. 4159 // 4160 // - Evaluates all current NetworkRequests that can be 4161 // satisfied by newNetwork, and reassigns to newNetwork 4162 // any such requests for which newNetwork is the best. 4163 // 4164 // - Lingers any validated Networks that as a result are no longer 4165 // needed. A network is needed if it is the best network for 4166 // one or more NetworkRequests, or if it is a VPN. 4167 // 4168 // - Tears down newNetwork if it just became validated 4169 // (i.e. nascent==JUST_VALIDATED) but turns out to be unneeded. 4170 // 4171 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4172 // networks that have no chance (i.e. even if validated) 4173 // of becoming the highest scoring network. 4174 // 4175 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4176 // it does not remove NetworkRequests that other Networks could better satisfy. 4177 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4178 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4179 // as it performs better by a factor of the number of Networks. 4180 // 4181 // @param newNetwork is the network to be matched against NetworkRequests. 4182 // @param nascent indicates if newNetwork just became validated, in which case it should be 4183 // torn down if unneeded. 4184 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4185 // performed to tear down unvalidated networks that have no chance (i.e. even if 4186 // validated) of becoming the highest scoring network. 4187 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, NascentState nascent, 4188 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4189 if (!newNetwork.created) return; 4190 if (nascent == NascentState.JUST_VALIDATED && !newNetwork.everValidated) { 4191 loge("ERROR: nascent network not validated."); 4192 } 4193 boolean keep = newNetwork.isVPN(); 4194 boolean isNewDefault = false; 4195 NetworkAgentInfo oldDefaultNetwork = null; 4196 if (DBG) log("rematching " + newNetwork.name()); 4197 // Find and migrate to this Network any NetworkRequests for 4198 // which this network is now the best. 4199 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4200 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4201 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4202 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4203 if (newNetwork == currentNetwork) { 4204 if (DBG) { 4205 log("Network " + newNetwork.name() + " was already satisfying" + 4206 " request " + nri.request.requestId + ". No change."); 4207 } 4208 keep = true; 4209 continue; 4210 } 4211 4212 // check if it satisfies the NetworkCapabilities 4213 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4214 if (newNetwork.satisfies(nri.request)) { 4215 if (!nri.isRequest) { 4216 // This is not a request, it's a callback listener. 4217 // Add it to newNetwork regardless of score. 4218 newNetwork.addRequest(nri.request); 4219 continue; 4220 } 4221 4222 // next check if it's better than any current network we're using for 4223 // this request 4224 if (VDBG) { 4225 log("currentScore = " + 4226 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4227 ", newScore = " + newNetwork.getCurrentScore()); 4228 } 4229 if (currentNetwork == null || 4230 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4231 if (currentNetwork != null) { 4232 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4233 currentNetwork.networkRequests.remove(nri.request.requestId); 4234 currentNetwork.networkLingered.add(nri.request); 4235 affectedNetworks.add(currentNetwork); 4236 } else { 4237 if (DBG) log(" accepting network in place of null"); 4238 } 4239 unlinger(newNetwork); 4240 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4241 newNetwork.addRequest(nri.request); 4242 keep = true; 4243 // Tell NetworkFactories about the new score, so they can stop 4244 // trying to connect if they know they cannot match it. 4245 // TODO - this could get expensive if we have alot of requests for this 4246 // network. Think about if there is a way to reduce this. Push 4247 // netid->request mapping to each factory? 4248 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4249 if (mDefaultRequest.requestId == nri.request.requestId) { 4250 isNewDefault = true; 4251 oldDefaultNetwork = currentNetwork; 4252 } 4253 } 4254 } 4255 } 4256 // Linger any networks that are no longer needed. 4257 for (NetworkAgentInfo nai : affectedNetworks) { 4258 if (nai.everValidated && unneeded(nai)) { 4259 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4260 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4261 } else { 4262 unlinger(nai); 4263 } 4264 } 4265 if (keep) { 4266 if (isNewDefault) { 4267 // Notify system services that this network is up. 4268 makeDefault(newNetwork); 4269 synchronized (ConnectivityService.this) { 4270 // have a new default network, release the transition wakelock in 4271 // a second if it's held. The second pause is to allow apps 4272 // to reconnect over the new network 4273 if (mNetTransitionWakeLock.isHeld()) { 4274 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4275 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4276 mNetTransitionWakeLockSerialNumber, 0), 4277 1000); 4278 } 4279 } 4280 } 4281 4282 // do this after the default net is switched, but 4283 // before LegacyTypeTracker sends legacy broadcasts 4284 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4285 4286 if (isNewDefault) { 4287 // Maintain the illusion: since the legacy API only 4288 // understands one network at a time, we must pretend 4289 // that the current default network disconnected before 4290 // the new one connected. 4291 if (oldDefaultNetwork != null) { 4292 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4293 oldDefaultNetwork, true); 4294 } 4295 mDefaultInetConditionPublished = newNetwork.everValidated ? 100 : 0; 4296 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4297 notifyLockdownVpn(newNetwork); 4298 } 4299 4300 // Notify battery stats service about this network, both the normal 4301 // interface and any stacked links. 4302 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4303 try { 4304 final IBatteryStats bs = BatteryStatsService.getService(); 4305 final int type = newNetwork.networkInfo.getType(); 4306 4307 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4308 bs.noteNetworkInterfaceType(baseIface, type); 4309 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4310 final String stackedIface = stacked.getInterfaceName(); 4311 bs.noteNetworkInterfaceType(stackedIface, type); 4312 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4313 } 4314 } catch (RemoteException ignored) { 4315 } 4316 4317 // This has to happen after the notifyNetworkCallbacks as that tickles each 4318 // ConnectivityManager instance so that legacy requests correctly bind dns 4319 // requests to this network. The legacy users are listening for this bcast 4320 // and will generally do a dns request so they can ensureRouteToHost and if 4321 // they do that before the callbacks happen they'll use the default network. 4322 // 4323 // TODO: Is there still a race here? We send the broadcast 4324 // after sending the callback, but if the app can receive the 4325 // broadcast before the callback, it might still break. 4326 // 4327 // This *does* introduce a race where if the user uses the new api 4328 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4329 // they may get old info. Reverse this after the old startUsing api is removed. 4330 // This is on top of the multiple intent sequencing referenced in the todo above. 4331 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4332 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4333 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4334 // legacy type tracker filters out repeat adds 4335 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4336 } 4337 } 4338 4339 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4340 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4341 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4342 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4343 if (newNetwork.isVPN()) { 4344 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4345 } 4346 } else if (nascent == NascentState.JUST_VALIDATED) { 4347 // Only tear down newly validated networks here. Leave unvalidated to either become 4348 // validated (and get evaluated against peers, one losing here), or get reaped (see 4349 // reapUnvalidatedNetworks) if they have no chance of becoming the highest scoring 4350 // network. Networks that have been up for a while and are validated should be torn 4351 // down via the lingering process so communication on that network is given time to 4352 // wrap up. 4353 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4354 teardownUnneededNetwork(newNetwork); 4355 } 4356 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4357 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4358 if (!nai.everValidated && unneeded(nai)) { 4359 if (DBG) log("Reaping " + nai.name()); 4360 teardownUnneededNetwork(nai); 4361 } 4362 } 4363 } 4364 } 4365 4366 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4367 // being disconnected. 4368 // If only one Network's score or capabilities have been modified since the last time 4369 // this function was called, pass this Network in via the "changed" arugment, otherwise 4370 // pass null. 4371 // If only one Network has been changed but its NetworkCapabilities have not changed, 4372 // pass in the Network's score (from getCurrentScore()) prior to the change via 4373 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4374 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4375 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4376 // to avoid the slowness. It is not simply enough to process just "changed", for 4377 // example in the case where "changed"'s score decreases and another network should begin 4378 // satifying a NetworkRequest that "changed" currently satisfies. 4379 4380 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4381 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4382 // rematchNetworkAndRequests() handles. 4383 if (changed != null && oldScore < changed.getCurrentScore()) { 4384 rematchNetworkAndRequests(changed, NascentState.NOT_JUST_VALIDATED, 4385 ReapUnvalidatedNetworks.REAP); 4386 } else { 4387 for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) { 4388 rematchNetworkAndRequests((NetworkAgentInfo)i.next(), 4389 NascentState.NOT_JUST_VALIDATED, 4390 // Only reap the last time through the loop. Reaping before all rematching 4391 // is complete could incorrectly teardown a network that hasn't yet been 4392 // rematched. 4393 i.hasNext() ? ReapUnvalidatedNetworks.DONT_REAP 4394 : ReapUnvalidatedNetworks.REAP); 4395 } 4396 } 4397 } 4398 4399 private void updateInetCondition(NetworkAgentInfo nai) { 4400 // Don't bother updating until we've graduated to validated at least once. 4401 if (!nai.everValidated) return; 4402 // For now only update icons for default connection. 4403 // TODO: Update WiFi and cellular icons separately. b/17237507 4404 if (!isDefaultNetwork(nai)) return; 4405 4406 int newInetCondition = nai.lastValidated ? 100 : 0; 4407 // Don't repeat publish. 4408 if (newInetCondition == mDefaultInetConditionPublished) return; 4409 4410 mDefaultInetConditionPublished = newInetCondition; 4411 sendInetConditionBroadcast(nai.networkInfo); 4412 } 4413 4414 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4415 if (mLockdownTracker != null) { 4416 if (nai != null && nai.isVPN()) { 4417 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4418 } else { 4419 mLockdownTracker.onNetworkInfoChanged(); 4420 } 4421 } 4422 } 4423 4424 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4425 NetworkInfo.State state = newInfo.getState(); 4426 NetworkInfo oldInfo = null; 4427 synchronized (networkAgent) { 4428 oldInfo = networkAgent.networkInfo; 4429 networkAgent.networkInfo = newInfo; 4430 } 4431 notifyLockdownVpn(networkAgent); 4432 4433 if (oldInfo != null && oldInfo.getState() == state) { 4434 if (VDBG) log("ignoring duplicate network state non-change"); 4435 return; 4436 } 4437 if (DBG) { 4438 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4439 (oldInfo == null ? "null" : oldInfo.getState()) + 4440 " to " + state); 4441 } 4442 4443 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4444 try { 4445 // This should never fail. Specifying an already in use NetID will cause failure. 4446 if (networkAgent.isVPN()) { 4447 mNetd.createVirtualNetwork(networkAgent.network.netId, 4448 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4449 (networkAgent.networkMisc == null || 4450 !networkAgent.networkMisc.allowBypass)); 4451 } else { 4452 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4453 } 4454 } catch (Exception e) { 4455 loge("Error creating network " + networkAgent.network.netId + ": " 4456 + e.getMessage()); 4457 return; 4458 } 4459 networkAgent.created = true; 4460 updateLinkProperties(networkAgent, null); 4461 notifyIfacesChanged(); 4462 4463 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4464 scheduleUnvalidatedPrompt(networkAgent); 4465 4466 if (networkAgent.isVPN()) { 4467 // Temporarily disable the default proxy (not global). 4468 synchronized (mProxyLock) { 4469 if (!mDefaultProxyDisabled) { 4470 mDefaultProxyDisabled = true; 4471 if (mGlobalProxy == null && mDefaultProxy != null) { 4472 sendProxyBroadcast(null); 4473 } 4474 } 4475 } 4476 // TODO: support proxy per network. 4477 } 4478 4479 // Consider network even though it is not yet validated. 4480 rematchNetworkAndRequests(networkAgent, NascentState.NOT_JUST_VALIDATED, 4481 ReapUnvalidatedNetworks.REAP); 4482 4483 // This has to happen after matching the requests, because callbacks are just requests. 4484 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4485 } else if (state == NetworkInfo.State.DISCONNECTED || 4486 state == NetworkInfo.State.SUSPENDED) { 4487 networkAgent.asyncChannel.disconnect(); 4488 if (networkAgent.isVPN()) { 4489 synchronized (mProxyLock) { 4490 if (mDefaultProxyDisabled) { 4491 mDefaultProxyDisabled = false; 4492 if (mGlobalProxy == null && mDefaultProxy != null) { 4493 sendProxyBroadcast(mDefaultProxy); 4494 } 4495 } 4496 } 4497 } 4498 } 4499 } 4500 4501 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4502 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4503 if (score < 0) { 4504 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4505 "). Bumping score to min of 0"); 4506 score = 0; 4507 } 4508 4509 final int oldScore = nai.getCurrentScore(); 4510 nai.setCurrentScore(score); 4511 4512 rematchAllNetworksAndRequests(nai, oldScore); 4513 4514 sendUpdatedScoreToFactories(nai); 4515 } 4516 4517 // notify only this one new request of the current state 4518 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4519 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4520 // TODO - read state from monitor to decide what to send. 4521// if (nai.networkMonitor.isLingering()) { 4522// notifyType = NetworkCallbacks.LOSING; 4523// } else if (nai.networkMonitor.isEvaluating()) { 4524// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4525// } 4526 if (nri.mPendingIntent == null) { 4527 callCallbackForRequest(nri, nai, notifyType); 4528 } else { 4529 sendPendingIntentForRequest(nri, nai, notifyType); 4530 } 4531 } 4532 4533 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4534 // The NetworkInfo we actually send out has no bearing on the real 4535 // state of affairs. For example, if the default connection is mobile, 4536 // and a request for HIPRI has just gone away, we need to pretend that 4537 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4538 // the state to DISCONNECTED, even though the network is of type MOBILE 4539 // and is still connected. 4540 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4541 info.setType(type); 4542 if (connected) { 4543 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4544 sendConnectedBroadcast(info); 4545 } else { 4546 info.setDetailedState(DetailedState.DISCONNECTED, info.getReason(), info.getExtraInfo()); 4547 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4548 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4549 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4550 if (info.isFailover()) { 4551 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4552 nai.networkInfo.setFailover(false); 4553 } 4554 if (info.getReason() != null) { 4555 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4556 } 4557 if (info.getExtraInfo() != null) { 4558 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4559 } 4560 NetworkAgentInfo newDefaultAgent = null; 4561 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4562 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4563 if (newDefaultAgent != null) { 4564 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4565 newDefaultAgent.networkInfo); 4566 } else { 4567 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4568 } 4569 } 4570 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4571 mDefaultInetConditionPublished); 4572 sendStickyBroadcast(intent); 4573 if (newDefaultAgent != null) { 4574 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4575 } 4576 } 4577 } 4578 4579 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4580 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4581 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4582 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4583 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4584 if (VDBG) log(" sending notification for " + nr); 4585 if (nri.mPendingIntent == null) { 4586 callCallbackForRequest(nri, networkAgent, notifyType); 4587 } else { 4588 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4589 } 4590 } 4591 } 4592 4593 private String notifyTypeToName(int notifyType) { 4594 switch (notifyType) { 4595 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4596 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4597 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4598 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4599 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4600 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4601 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4602 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4603 } 4604 return "UNKNOWN"; 4605 } 4606 4607 /** 4608 * Notify other system services that set of active ifaces has changed. 4609 */ 4610 private void notifyIfacesChanged() { 4611 try { 4612 mStatsService.forceUpdateIfaces(); 4613 } catch (Exception ignored) { 4614 } 4615 } 4616 4617 @Override 4618 public boolean addVpnAddress(String address, int prefixLength) { 4619 throwIfLockdownEnabled(); 4620 int user = UserHandle.getUserId(Binder.getCallingUid()); 4621 synchronized (mVpns) { 4622 return mVpns.get(user).addAddress(address, prefixLength); 4623 } 4624 } 4625 4626 @Override 4627 public boolean removeVpnAddress(String address, int prefixLength) { 4628 throwIfLockdownEnabled(); 4629 int user = UserHandle.getUserId(Binder.getCallingUid()); 4630 synchronized (mVpns) { 4631 return mVpns.get(user).removeAddress(address, prefixLength); 4632 } 4633 } 4634 4635 @Override 4636 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4637 throwIfLockdownEnabled(); 4638 int user = UserHandle.getUserId(Binder.getCallingUid()); 4639 boolean success; 4640 synchronized (mVpns) { 4641 success = mVpns.get(user).setUnderlyingNetworks(networks); 4642 } 4643 if (success) { 4644 notifyIfacesChanged(); 4645 } 4646 return success; 4647 } 4648 4649 @Override 4650 public void factoryReset() { 4651 enforceConnectivityInternalPermission(); 4652 4653 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 4654 return; 4655 } 4656 4657 final int userId = UserHandle.getCallingUserId(); 4658 4659 // Turn airplane mode off 4660 setAirplaneMode(false); 4661 4662 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 4663 // Untether 4664 for (String tether : getTetheredIfaces()) { 4665 untether(tether); 4666 } 4667 } 4668 4669 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 4670 // Turn VPN off 4671 VpnConfig vpnConfig = getVpnConfig(userId); 4672 if (vpnConfig != null) { 4673 if (vpnConfig.legacy) { 4674 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 4675 } else { 4676 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 4677 // in the future without user intervention. 4678 setVpnPackageAuthorization(vpnConfig.user, userId, false); 4679 4680 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 4681 } 4682 } 4683 } 4684 } 4685} 4686