ConnectivityService.java revision b10e37fd1c3a95f7e621eed234c2491eb71241e2
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.MANAGE_NETWORK_POLICY; 20import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE; 21import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; 22import static android.net.ConnectivityManager.CONNECTIVITY_ACTION_IMMEDIATE; 23import static android.net.ConnectivityManager.TYPE_BLUETOOTH; 24import static android.net.ConnectivityManager.TYPE_DUMMY; 25import static android.net.ConnectivityManager.TYPE_MOBILE; 26import static android.net.ConnectivityManager.TYPE_MOBILE_CBS; 27import static android.net.ConnectivityManager.TYPE_MOBILE_DUN; 28import static android.net.ConnectivityManager.TYPE_MOBILE_FOTA; 29import static android.net.ConnectivityManager.TYPE_MOBILE_HIPRI; 30import static android.net.ConnectivityManager.TYPE_MOBILE_IA; 31import static android.net.ConnectivityManager.TYPE_MOBILE_IMS; 32import static android.net.ConnectivityManager.TYPE_MOBILE_MMS; 33import static android.net.ConnectivityManager.TYPE_MOBILE_SUPL; 34import static android.net.ConnectivityManager.TYPE_NONE; 35import static android.net.ConnectivityManager.TYPE_PROXY; 36import static android.net.ConnectivityManager.TYPE_VPN; 37import static android.net.ConnectivityManager.TYPE_WIFI; 38import static android.net.ConnectivityManager.TYPE_WIMAX; 39import static android.net.ConnectivityManager.getNetworkTypeName; 40import static android.net.ConnectivityManager.isNetworkTypeValid; 41import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 42import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 43 44import android.app.AlarmManager; 45import android.app.Notification; 46import android.app.NotificationManager; 47import android.app.PendingIntent; 48import android.content.ActivityNotFoundException; 49import android.content.BroadcastReceiver; 50import android.content.ContentResolver; 51import android.content.Context; 52import android.content.ContextWrapper; 53import android.content.Intent; 54import android.content.IntentFilter; 55import android.content.pm.PackageManager; 56import android.content.res.Configuration; 57import android.content.res.Resources; 58import android.database.ContentObserver; 59import android.net.ConnectivityManager; 60import android.net.IConnectivityManager; 61import android.net.INetworkManagementEventObserver; 62import android.net.INetworkPolicyListener; 63import android.net.INetworkPolicyManager; 64import android.net.INetworkStatsService; 65import android.net.LinkAddress; 66import android.net.LinkProperties; 67import android.net.LinkProperties.CompareResult; 68import android.net.MobileDataStateTracker; 69import android.net.Network; 70import android.net.NetworkAgent; 71import android.net.NetworkCapabilities; 72import android.net.NetworkConfig; 73import android.net.NetworkInfo; 74import android.net.NetworkInfo.DetailedState; 75import android.net.NetworkFactory; 76import android.net.NetworkMisc; 77import android.net.NetworkQuotaInfo; 78import android.net.NetworkRequest; 79import android.net.NetworkState; 80import android.net.NetworkStateTracker; 81import android.net.NetworkUtils; 82import android.net.Proxy; 83import android.net.ProxyDataTracker; 84import android.net.ProxyInfo; 85import android.net.RouteInfo; 86import android.net.SamplingDataTracker; 87import android.net.UidRange; 88import android.net.Uri; 89import android.net.wimax.WimaxManagerConstants; 90import android.os.AsyncTask; 91import android.os.Binder; 92import android.os.Build; 93import android.os.Bundle; 94import android.os.FileUtils; 95import android.os.Handler; 96import android.os.HandlerThread; 97import android.os.IBinder; 98import android.os.INetworkManagementService; 99import android.os.Looper; 100import android.os.Message; 101import android.os.Messenger; 102import android.os.ParcelFileDescriptor; 103import android.os.PowerManager; 104import android.os.Process; 105import android.os.RemoteException; 106import android.os.ServiceManager; 107import android.os.SystemClock; 108import android.os.SystemProperties; 109import android.os.UserHandle; 110import android.os.UserManager; 111import android.provider.Settings; 112import android.security.Credentials; 113import android.security.KeyStore; 114import android.telephony.TelephonyManager; 115import android.text.TextUtils; 116import android.util.Slog; 117import android.util.SparseArray; 118import android.util.SparseIntArray; 119import android.util.Xml; 120 121import com.android.internal.R; 122import com.android.internal.annotations.GuardedBy; 123import com.android.internal.app.IBatteryStats; 124import com.android.internal.net.LegacyVpnInfo; 125import com.android.internal.net.NetworkStatsFactory; 126import com.android.internal.net.VpnConfig; 127import com.android.internal.net.VpnProfile; 128import com.android.internal.telephony.DctConstants; 129import com.android.internal.telephony.Phone; 130import com.android.internal.telephony.PhoneConstants; 131import com.android.internal.telephony.TelephonyIntents; 132import com.android.internal.util.AsyncChannel; 133import com.android.internal.util.IndentingPrintWriter; 134import com.android.internal.util.XmlUtils; 135import com.android.server.am.BatteryStatsService; 136import com.android.server.connectivity.DataConnectionStats; 137import com.android.server.connectivity.Nat464Xlat; 138import com.android.server.connectivity.NetworkAgentInfo; 139import com.android.server.connectivity.NetworkMonitor; 140import com.android.server.connectivity.PacManager; 141import com.android.server.connectivity.PermissionMonitor; 142import com.android.server.connectivity.Tethering; 143import com.android.server.connectivity.Vpn; 144import com.android.server.net.BaseNetworkObserver; 145import com.android.server.net.LockdownVpnTracker; 146import com.google.android.collect.Lists; 147import com.google.android.collect.Sets; 148 149import dalvik.system.DexClassLoader; 150 151import org.xmlpull.v1.XmlPullParser; 152import org.xmlpull.v1.XmlPullParserException; 153 154import java.io.File; 155import java.io.FileDescriptor; 156import java.io.FileNotFoundException; 157import java.io.FileReader; 158import java.io.IOException; 159import java.io.PrintWriter; 160import java.lang.reflect.Constructor; 161import java.net.HttpURLConnection; 162import java.net.Inet4Address; 163import java.net.Inet6Address; 164import java.net.InetAddress; 165import java.net.URL; 166import java.net.UnknownHostException; 167import java.util.ArrayList; 168import java.util.Arrays; 169import java.util.Collection; 170import java.util.GregorianCalendar; 171import java.util.HashMap; 172import java.util.HashSet; 173import java.util.Iterator; 174import java.util.List; 175import java.util.Map; 176import java.util.Objects; 177import java.util.Random; 178import java.util.concurrent.atomic.AtomicBoolean; 179import java.util.concurrent.atomic.AtomicInteger; 180 181import javax.net.ssl.HostnameVerifier; 182import javax.net.ssl.HttpsURLConnection; 183import javax.net.ssl.SSLSession; 184 185/** 186 * @hide 187 */ 188public class ConnectivityService extends IConnectivityManager.Stub 189 implements PendingIntent.OnFinished { 190 private static final String TAG = "ConnectivityService"; 191 192 private static final boolean DBG = true; 193 private static final boolean VDBG = false; 194 195 // network sampling debugging 196 private static final boolean SAMPLE_DBG = false; 197 198 private static final boolean LOGD_RULES = false; 199 200 // TODO: create better separation between radio types and network types 201 202 // how long to wait before switching back to a radio's default network 203 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 204 // system property that can override the above value 205 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 206 "android.telephony.apn-restore"; 207 208 // Default value if FAIL_FAST_TIME_MS is not set 209 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 210 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 211 private static final String FAIL_FAST_TIME_MS = 212 "persist.radio.fail_fast_time_ms"; 213 214 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 215 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 216 217 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 218 219 private PendingIntent mSampleIntervalElapsedIntent; 220 221 // Set network sampling interval at 12 minutes, this way, even if the timers get 222 // aggregated, it will fire at around 15 minutes, which should allow us to 223 // aggregate this timer with other timers (specially the socket keep alive timers) 224 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 12 * 60); 225 226 // start network sampling a minute after booting ... 227 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 60); 228 229 AlarmManager mAlarmManager; 230 231 private Tethering mTethering; 232 233 private final PermissionMonitor mPermissionMonitor; 234 235 private KeyStore mKeyStore; 236 237 @GuardedBy("mVpns") 238 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 239 240 private boolean mLockdownEnabled; 241 private LockdownVpnTracker mLockdownTracker; 242 243 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 244 private Object mRulesLock = new Object(); 245 /** Currently active network rules by UID. */ 246 private SparseIntArray mUidRules = new SparseIntArray(); 247 /** Set of ifaces that are costly. */ 248 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 249 250 /** 251 * Sometimes we want to refer to the individual network state 252 * trackers separately, and sometimes we just want to treat them 253 * abstractly. 254 */ 255 private NetworkStateTracker mNetTrackers[]; 256 257 private Context mContext; 258 private int mNetworkPreference; 259 // 0 is full bad, 100 is full good 260 private int mDefaultInetConditionPublished = 0; 261 262 private Object mDnsLock = new Object(); 263 private int mNumDnsEntries; 264 265 private boolean mTestMode; 266 private static ConnectivityService sServiceInstance; 267 268 private INetworkManagementService mNetd; 269 private INetworkPolicyManager mPolicyManager; 270 271 private String mCurrentTcpBufferSizes; 272 273 private static final int ENABLED = 1; 274 private static final int DISABLED = 0; 275 276 // Arguments to rematchNetworkAndRequests() 277 private enum NascentState { 278 // Indicates a network was just validated for the first time. If the network is found to 279 // be unwanted (i.e. not satisfy any NetworkRequests) it is torn down. 280 JUST_VALIDATED, 281 // Indicates a network was not validated for the first time immediately prior to this call. 282 NOT_JUST_VALIDATED 283 }; 284 private enum ReapUnvalidatedNetworks { 285 // Tear down unvalidated networks that have no chance (i.e. even if validated) of becoming 286 // the highest scoring network satisfying a NetworkRequest. This should be passed when it's 287 // known that there may be unvalidated networks that could potentially be reaped, and when 288 // all networks have been rematched against all NetworkRequests. 289 REAP, 290 // Don't reap unvalidated networks. This should be passed when it's known that there are 291 // no unvalidated networks that could potentially be reaped, and when some networks have 292 // not yet been rematched against all NetworkRequests. 293 DONT_REAP 294 }; 295 296 /** 297 * used internally to change our mobile data enabled flag 298 */ 299 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 300 301 /** 302 * used internally to clear a wakelock when transitioning 303 * from one net to another. Clear happens when we get a new 304 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 305 * after a timeout if no network is found (typically 1 min). 306 */ 307 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 308 309 /** 310 * used internally to reload global proxy settings 311 */ 312 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 313 314 /** 315 * used internally to set external dependency met/unmet 316 * arg1 = ENABLED (met) or DISABLED (unmet) 317 * arg2 = NetworkType 318 */ 319 private static final int EVENT_SET_DEPENDENCY_MET = 10; 320 321 /** 322 * used internally to send a sticky broadcast delayed. 323 */ 324 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 325 326 /** 327 * Used internally to 328 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 329 */ 330 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 331 332 /** 333 * Used internally to disable fail fast of mobile data 334 */ 335 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 336 337 /** 338 * used internally to indicate that data sampling interval is up 339 */ 340 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 341 342 /** 343 * PAC manager has received new port. 344 */ 345 private static final int EVENT_PROXY_HAS_CHANGED = 16; 346 347 /** 348 * used internally when registering NetworkFactories 349 * obj = NetworkFactoryInfo 350 */ 351 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 352 353 /** 354 * used internally when registering NetworkAgents 355 * obj = Messenger 356 */ 357 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 358 359 /** 360 * used to add a network request 361 * includes a NetworkRequestInfo 362 */ 363 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 364 365 /** 366 * indicates a timeout period is over - check if we had a network yet or not 367 * and if not, call the timeout calback (but leave the request live until they 368 * cancel it. 369 * includes a NetworkRequestInfo 370 */ 371 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 372 373 /** 374 * used to add a network listener - no request 375 * includes a NetworkRequestInfo 376 */ 377 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 378 379 /** 380 * used to remove a network request, either a listener or a real request 381 * arg1 = UID of caller 382 * obj = NetworkRequest 383 */ 384 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 385 386 /** 387 * used internally when registering NetworkFactories 388 * obj = Messenger 389 */ 390 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 391 392 /** 393 * used internally to expire a wakelock when transitioning 394 * from one net to another. Expire happens when we fail to find 395 * a new network (typically after 1 minute) - 396 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 397 * a replacement network. 398 */ 399 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 400 401 /** 402 * Used internally to indicate the system is ready. 403 */ 404 private static final int EVENT_SYSTEM_READY = 25; 405 406 /** 407 * used to add a network request with a pending intent 408 * includes a NetworkRequestInfo 409 */ 410 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 411 412 /** 413 * used to remove a pending intent and its associated network request. 414 * arg1 = UID of caller 415 * obj = PendingIntent 416 */ 417 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 418 419 420 /** Handler used for internal events. */ 421 final private InternalHandler mHandler; 422 /** Handler used for incoming {@link NetworkStateTracker} events. */ 423 final private NetworkStateTrackerHandler mTrackerHandler; 424 425 private boolean mSystemReady; 426 private Intent mInitialBroadcast; 427 428 private PowerManager.WakeLock mNetTransitionWakeLock; 429 private String mNetTransitionWakeLockCausedBy = ""; 430 private int mNetTransitionWakeLockSerialNumber; 431 private int mNetTransitionWakeLockTimeout; 432 private final PowerManager.WakeLock mPendingIntentWakeLock; 433 434 private InetAddress mDefaultDns; 435 436 // used in DBG mode to track inet condition reports 437 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 438 private ArrayList mInetLog; 439 440 // track the current default http proxy - tell the world if we get a new one (real change) 441 private volatile ProxyInfo mDefaultProxy = null; 442 private Object mProxyLock = new Object(); 443 private boolean mDefaultProxyDisabled = false; 444 445 // track the global proxy. 446 private ProxyInfo mGlobalProxy = null; 447 448 private PacManager mPacManager = null; 449 450 private SettingsObserver mSettingsObserver; 451 452 private UserManager mUserManager; 453 454 NetworkConfig[] mNetConfigs; 455 int mNetworksDefined; 456 457 // the set of network types that can only be enabled by system/sig apps 458 List mProtectedNetworks; 459 460 private DataConnectionStats mDataConnectionStats; 461 462 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 463 464 TelephonyManager mTelephonyManager; 465 466 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 467 private final static int MIN_NET_ID = 100; // some reserved marks 468 private final static int MAX_NET_ID = 65535; 469 private int mNextNetId = MIN_NET_ID; 470 471 // sequence number of NetworkRequests 472 private int mNextNetworkRequestId = 1; 473 474 /** 475 * Implements support for the legacy "one network per network type" model. 476 * 477 * We used to have a static array of NetworkStateTrackers, one for each 478 * network type, but that doesn't work any more now that we can have, 479 * for example, more that one wifi network. This class stores all the 480 * NetworkAgentInfo objects that support a given type, but the legacy 481 * API will only see the first one. 482 * 483 * It serves two main purposes: 484 * 485 * 1. Provide information about "the network for a given type" (since this 486 * API only supports one). 487 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 488 * the first network for a given type changes, or if the default network 489 * changes. 490 */ 491 private class LegacyTypeTracker { 492 493 private static final boolean DBG = true; 494 private static final boolean VDBG = false; 495 private static final String TAG = "CSLegacyTypeTracker"; 496 497 /** 498 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 499 * Each list holds references to all NetworkAgentInfos that are used to 500 * satisfy requests for that network type. 501 * 502 * This array is built out at startup such that an unsupported network 503 * doesn't get an ArrayList instance, making this a tristate: 504 * unsupported, supported but not active and active. 505 * 506 * The actual lists are populated when we scan the network types that 507 * are supported on this device. 508 */ 509 private ArrayList<NetworkAgentInfo> mTypeLists[]; 510 511 public LegacyTypeTracker() { 512 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 513 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 514 } 515 516 public void addSupportedType(int type) { 517 if (mTypeLists[type] != null) { 518 throw new IllegalStateException( 519 "legacy list for type " + type + "already initialized"); 520 } 521 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 522 } 523 524 public boolean isTypeSupported(int type) { 525 return isNetworkTypeValid(type) && mTypeLists[type] != null; 526 } 527 528 public NetworkAgentInfo getNetworkForType(int type) { 529 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 530 return mTypeLists[type].get(0); 531 } else { 532 return null; 533 } 534 } 535 536 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 537 if (DBG) { 538 log("Sending " + (connected ? "connected" : "disconnected") + 539 " broadcast for type " + type + " " + nai.name() + 540 " isDefaultNetwork=" + isDefaultNetwork(nai)); 541 } 542 } 543 544 /** Adds the given network to the specified legacy type list. */ 545 public void add(int type, NetworkAgentInfo nai) { 546 if (!isTypeSupported(type)) { 547 return; // Invalid network type. 548 } 549 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 550 551 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 552 if (list.contains(nai)) { 553 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 554 return; 555 } 556 557 list.add(nai); 558 559 // Send a broadcast if this is the first network of its type or if it's the default. 560 if (list.size() == 1 || isDefaultNetwork(nai)) { 561 maybeLogBroadcast(nai, true, type); 562 sendLegacyNetworkBroadcast(nai, true, type); 563 } 564 } 565 566 /** Removes the given network from the specified legacy type list. */ 567 public void remove(int type, NetworkAgentInfo nai) { 568 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 569 if (list == null || list.isEmpty()) { 570 return; 571 } 572 573 boolean wasFirstNetwork = list.get(0).equals(nai); 574 575 if (!list.remove(nai)) { 576 return; 577 } 578 579 if (wasFirstNetwork || isDefaultNetwork(nai)) { 580 maybeLogBroadcast(nai, false, type); 581 sendLegacyNetworkBroadcast(nai, false, type); 582 } 583 584 if (!list.isEmpty() && wasFirstNetwork) { 585 if (DBG) log("Other network available for type " + type + 586 ", sending connected broadcast"); 587 maybeLogBroadcast(list.get(0), false, type); 588 sendLegacyNetworkBroadcast(list.get(0), false, type); 589 } 590 } 591 592 /** Removes the given network from all legacy type lists. */ 593 public void remove(NetworkAgentInfo nai) { 594 if (VDBG) log("Removing agent " + nai); 595 for (int type = 0; type < mTypeLists.length; type++) { 596 remove(type, nai); 597 } 598 } 599 600 private String naiToString(NetworkAgentInfo nai) { 601 String name = (nai != null) ? nai.name() : "null"; 602 String state = (nai.networkInfo != null) ? 603 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 604 "???/???"; 605 return name + " " + state; 606 } 607 608 public void dump(IndentingPrintWriter pw) { 609 for (int type = 0; type < mTypeLists.length; type++) { 610 if (mTypeLists[type] == null) continue; 611 pw.print(type + " "); 612 pw.increaseIndent(); 613 if (mTypeLists[type].size() == 0) pw.println("none"); 614 for (NetworkAgentInfo nai : mTypeLists[type]) { 615 pw.println(naiToString(nai)); 616 } 617 pw.decreaseIndent(); 618 } 619 } 620 621 // This class needs its own log method because it has a different TAG. 622 private void log(String s) { 623 Slog.d(TAG, s); 624 } 625 626 } 627 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 628 629 public ConnectivityService(Context context, INetworkManagementService netManager, 630 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 631 if (DBG) log("ConnectivityService starting up"); 632 633 NetworkCapabilities netCap = new NetworkCapabilities(); 634 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 635 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 636 mDefaultRequest = new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 637 NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(), 638 NetworkRequestInfo.REQUEST); 639 mNetworkRequests.put(mDefaultRequest, nri); 640 641 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 642 handlerThread.start(); 643 mHandler = new InternalHandler(handlerThread.getLooper()); 644 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 645 646 // setup our unique device name 647 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 648 String id = Settings.Secure.getString(context.getContentResolver(), 649 Settings.Secure.ANDROID_ID); 650 if (id != null && id.length() > 0) { 651 String name = new String("android-").concat(id); 652 SystemProperties.set("net.hostname", name); 653 } 654 } 655 656 // read our default dns server ip 657 String dns = Settings.Global.getString(context.getContentResolver(), 658 Settings.Global.DEFAULT_DNS_SERVER); 659 if (dns == null || dns.length() == 0) { 660 dns = context.getResources().getString( 661 com.android.internal.R.string.config_default_dns_server); 662 } 663 try { 664 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 665 } catch (IllegalArgumentException e) { 666 loge("Error setting defaultDns using " + dns); 667 } 668 669 mContext = checkNotNull(context, "missing Context"); 670 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 671 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 672 mKeyStore = KeyStore.getInstance(); 673 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 674 675 try { 676 mPolicyManager.registerListener(mPolicyListener); 677 } catch (RemoteException e) { 678 // ouch, no rules updates means some processes may never get network 679 loge("unable to register INetworkPolicyListener" + e.toString()); 680 } 681 682 final PowerManager powerManager = (PowerManager) context.getSystemService( 683 Context.POWER_SERVICE); 684 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 685 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 686 com.android.internal.R.integer.config_networkTransitionTimeout); 687 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 688 689 mNetTrackers = new NetworkStateTracker[ 690 ConnectivityManager.MAX_NETWORK_TYPE+1]; 691 692 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 693 694 // TODO: What is the "correct" way to do determine if this is a wifi only device? 695 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 696 log("wifiOnly=" + wifiOnly); 697 String[] naStrings = context.getResources().getStringArray( 698 com.android.internal.R.array.networkAttributes); 699 for (String naString : naStrings) { 700 try { 701 NetworkConfig n = new NetworkConfig(naString); 702 if (VDBG) log("naString=" + naString + " config=" + n); 703 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 704 loge("Error in networkAttributes - ignoring attempt to define type " + 705 n.type); 706 continue; 707 } 708 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 709 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 710 n.type); 711 continue; 712 } 713 if (mNetConfigs[n.type] != null) { 714 loge("Error in networkAttributes - ignoring attempt to redefine type " + 715 n.type); 716 continue; 717 } 718 mLegacyTypeTracker.addSupportedType(n.type); 719 720 mNetConfigs[n.type] = n; 721 mNetworksDefined++; 722 } catch(Exception e) { 723 // ignore it - leave the entry null 724 } 725 } 726 727 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 728 if (mNetConfigs[TYPE_VPN] == null) { 729 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 730 // don't need to add TYPE_VPN to mNetConfigs. 731 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 732 mNetworksDefined++; // used only in the log() statement below. 733 } 734 735 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 736 737 mProtectedNetworks = new ArrayList<Integer>(); 738 int[] protectedNetworks = context.getResources().getIntArray( 739 com.android.internal.R.array.config_protectedNetworks); 740 for (int p : protectedNetworks) { 741 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 742 mProtectedNetworks.add(p); 743 } else { 744 if (DBG) loge("Ignoring protectedNetwork " + p); 745 } 746 } 747 748 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 749 && SystemProperties.get("ro.build.type").equals("eng"); 750 751 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 752 753 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 754 755 //set up the listener for user state for creating user VPNs 756 IntentFilter intentFilter = new IntentFilter(); 757 intentFilter.addAction(Intent.ACTION_USER_STARTING); 758 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 759 mContext.registerReceiverAsUser( 760 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 761 762 try { 763 mNetd.registerObserver(mTethering); 764 mNetd.registerObserver(mDataActivityObserver); 765 } catch (RemoteException e) { 766 loge("Error registering observer :" + e); 767 } 768 769 if (DBG) { 770 mInetLog = new ArrayList(); 771 } 772 773 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 774 mSettingsObserver.observe(mContext); 775 776 mDataConnectionStats = new DataConnectionStats(mContext); 777 mDataConnectionStats.startMonitoring(); 778 779 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 780 781 IntentFilter filter = new IntentFilter(); 782 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 783 mContext.registerReceiver( 784 new BroadcastReceiver() { 785 @Override 786 public void onReceive(Context context, Intent intent) { 787 String action = intent.getAction(); 788 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 789 mHandler.sendMessage(mHandler.obtainMessage 790 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 791 } 792 } 793 }, 794 new IntentFilter(filter)); 795 796 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 797 798 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 799 } 800 801 private synchronized int nextNetworkRequestId() { 802 return mNextNetworkRequestId++; 803 } 804 805 private void assignNextNetId(NetworkAgentInfo nai) { 806 synchronized (mNetworkForNetId) { 807 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 808 int netId = mNextNetId; 809 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 810 // Make sure NetID unused. http://b/16815182 811 if (mNetworkForNetId.get(netId) == null) { 812 nai.network = new Network(netId); 813 mNetworkForNetId.put(netId, nai); 814 return; 815 } 816 } 817 } 818 throw new IllegalStateException("No free netIds"); 819 } 820 821 private int getConnectivityChangeDelay() { 822 final ContentResolver cr = mContext.getContentResolver(); 823 824 /** Check system properties for the default value then use secure settings value, if any. */ 825 int defaultDelay = SystemProperties.getInt( 826 "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY, 827 ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT); 828 return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY, 829 defaultDelay); 830 } 831 832 private boolean teardown(NetworkStateTracker netTracker) { 833 if (netTracker.teardown()) { 834 netTracker.setTeardownRequested(true); 835 return true; 836 } else { 837 return false; 838 } 839 } 840 841 private NetworkState getFilteredNetworkState(int networkType, int uid) { 842 NetworkInfo info = null; 843 LinkProperties lp = null; 844 NetworkCapabilities nc = null; 845 Network network = null; 846 847 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 848 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 849 if (nai != null) { 850 synchronized (nai) { 851 info = new NetworkInfo(nai.networkInfo); 852 lp = new LinkProperties(nai.linkProperties); 853 nc = new NetworkCapabilities(nai.networkCapabilities); 854 network = new Network(nai.network); 855 } 856 info.setType(networkType); 857 } else { 858 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 859 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 860 info.setIsAvailable(true); 861 lp = new LinkProperties(); 862 nc = new NetworkCapabilities(); 863 network = null; 864 } 865 info = getFilteredNetworkInfo(info, lp, uid); 866 } 867 868 return new NetworkState(info, lp, nc, network); 869 } 870 871 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 872 if (network == null) { 873 return null; 874 } 875 synchronized (mNetworkForNetId) { 876 return mNetworkForNetId.get(network.netId); 877 } 878 }; 879 880 private NetworkState getUnfilteredActiveNetworkState(int uid) { 881 NetworkInfo info = null; 882 LinkProperties lp = null; 883 NetworkCapabilities nc = null; 884 Network network = null; 885 886 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 887 888 if (!mLockdownEnabled) { 889 int user = UserHandle.getUserId(uid); 890 synchronized (mVpns) { 891 Vpn vpn = mVpns.get(user); 892 if (vpn != null && vpn.appliesToUid(uid)) { 893 // getUnderlyingNetworks() returns: 894 // null => the VPN didn't specify anything, so we use the default. 895 // empty array => the VPN explicitly said "no default network". 896 // non-empty array => the VPN specified one or more default networks; we use the 897 // first one. 898 Network[] networks = vpn.getUnderlyingNetworks(); 899 if (networks != null) { 900 if (networks.length > 0) { 901 nai = getNetworkAgentInfoForNetwork(networks[0]); 902 } else { 903 nai = null; 904 } 905 } 906 } 907 } 908 } 909 910 if (nai != null) { 911 synchronized (nai) { 912 info = new NetworkInfo(nai.networkInfo); 913 lp = new LinkProperties(nai.linkProperties); 914 nc = new NetworkCapabilities(nai.networkCapabilities); 915 network = new Network(nai.network); 916 } 917 } 918 919 return new NetworkState(info, lp, nc, network); 920 } 921 922 /** 923 * Check if UID should be blocked from using the network with the given LinkProperties. 924 */ 925 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 926 final boolean networkCostly; 927 final int uidRules; 928 929 final String iface = (lp == null ? "" : lp.getInterfaceName()); 930 synchronized (mRulesLock) { 931 networkCostly = mMeteredIfaces.contains(iface); 932 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 933 } 934 935 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 936 return true; 937 } 938 939 // no restrictive rules; network is visible 940 return false; 941 } 942 943 /** 944 * Return a filtered {@link NetworkInfo}, potentially marked 945 * {@link DetailedState#BLOCKED} based on 946 * {@link #isNetworkWithLinkPropertiesBlocked}. 947 */ 948 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 949 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 950 // network is blocked; clone and override state 951 info = new NetworkInfo(info); 952 info.setDetailedState(DetailedState.BLOCKED, null, null); 953 if (DBG) log("returning Blocked NetworkInfo"); 954 } 955 if (info != null && mLockdownTracker != null) { 956 info = mLockdownTracker.augmentNetworkInfo(info); 957 if (DBG) log("returning Locked NetworkInfo"); 958 } 959 return info; 960 } 961 962 /** 963 * Return NetworkInfo for the active (i.e., connected) network interface. 964 * It is assumed that at most one network is active at a time. If more 965 * than one is active, it is indeterminate which will be returned. 966 * @return the info for the active network, or {@code null} if none is 967 * active 968 */ 969 @Override 970 public NetworkInfo getActiveNetworkInfo() { 971 enforceAccessPermission(); 972 final int uid = Binder.getCallingUid(); 973 NetworkState state = getUnfilteredActiveNetworkState(uid); 974 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 975 } 976 977 /** 978 * Find the first Provisioning network. 979 * 980 * @return NetworkInfo or null if none. 981 */ 982 private NetworkInfo getProvisioningNetworkInfo() { 983 enforceAccessPermission(); 984 985 // Find the first Provisioning Network 986 NetworkInfo provNi = null; 987 for (NetworkInfo ni : getAllNetworkInfo()) { 988 if (ni.isConnectedToProvisioningNetwork()) { 989 provNi = ni; 990 break; 991 } 992 } 993 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 994 return provNi; 995 } 996 997 /** 998 * Find the first Provisioning network or the ActiveDefaultNetwork 999 * if there is no Provisioning network 1000 * 1001 * @return NetworkInfo or null if none. 1002 */ 1003 @Override 1004 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 1005 enforceAccessPermission(); 1006 1007 NetworkInfo provNi = getProvisioningNetworkInfo(); 1008 if (provNi == null) { 1009 provNi = getActiveNetworkInfo(); 1010 } 1011 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 1012 return provNi; 1013 } 1014 1015 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1016 enforceAccessPermission(); 1017 final int uid = Binder.getCallingUid(); 1018 NetworkState state = getUnfilteredActiveNetworkState(uid); 1019 return state.networkInfo; 1020 } 1021 1022 @Override 1023 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1024 enforceConnectivityInternalPermission(); 1025 NetworkState state = getUnfilteredActiveNetworkState(uid); 1026 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1027 } 1028 1029 @Override 1030 public NetworkInfo getNetworkInfo(int networkType) { 1031 enforceAccessPermission(); 1032 final int uid = Binder.getCallingUid(); 1033 NetworkState state = getFilteredNetworkState(networkType, uid); 1034 return state.networkInfo; 1035 } 1036 1037 @Override 1038 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1039 enforceAccessPermission(); 1040 final int uid = Binder.getCallingUid(); 1041 NetworkInfo info = null; 1042 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1043 if (nai != null) { 1044 synchronized (nai) { 1045 info = new NetworkInfo(nai.networkInfo); 1046 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1047 } 1048 } 1049 return info; 1050 } 1051 1052 @Override 1053 public NetworkInfo[] getAllNetworkInfo() { 1054 enforceAccessPermission(); 1055 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1056 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1057 networkType++) { 1058 NetworkInfo info = getNetworkInfo(networkType); 1059 if (info != null) { 1060 result.add(info); 1061 } 1062 } 1063 return result.toArray(new NetworkInfo[result.size()]); 1064 } 1065 1066 @Override 1067 public Network getNetworkForType(int networkType) { 1068 enforceAccessPermission(); 1069 final int uid = Binder.getCallingUid(); 1070 NetworkState state = getFilteredNetworkState(networkType, uid); 1071 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1072 return state.network; 1073 } 1074 return null; 1075 } 1076 1077 @Override 1078 public Network[] getAllNetworks() { 1079 enforceAccessPermission(); 1080 final ArrayList<Network> result = new ArrayList(); 1081 synchronized (mNetworkForNetId) { 1082 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1083 result.add(new Network(mNetworkForNetId.valueAt(i).network)); 1084 } 1085 } 1086 return result.toArray(new Network[result.size()]); 1087 } 1088 1089 @Override 1090 public boolean isNetworkSupported(int networkType) { 1091 enforceAccessPermission(); 1092 return mLegacyTypeTracker.isTypeSupported(networkType); 1093 } 1094 1095 /** 1096 * Return LinkProperties for the active (i.e., connected) default 1097 * network interface. It is assumed that at most one default network 1098 * is active at a time. If more than one is active, it is indeterminate 1099 * which will be returned. 1100 * @return the ip properties for the active network, or {@code null} if 1101 * none is active 1102 */ 1103 @Override 1104 public LinkProperties getActiveLinkProperties() { 1105 enforceAccessPermission(); 1106 final int uid = Binder.getCallingUid(); 1107 NetworkState state = getUnfilteredActiveNetworkState(uid); 1108 return state.linkProperties; 1109 } 1110 1111 @Override 1112 public LinkProperties getLinkPropertiesForType(int networkType) { 1113 enforceAccessPermission(); 1114 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1115 if (nai != null) { 1116 synchronized (nai) { 1117 return new LinkProperties(nai.linkProperties); 1118 } 1119 } 1120 return null; 1121 } 1122 1123 // TODO - this should be ALL networks 1124 @Override 1125 public LinkProperties getLinkProperties(Network network) { 1126 enforceAccessPermission(); 1127 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1128 if (nai != null) { 1129 synchronized (nai) { 1130 return new LinkProperties(nai.linkProperties); 1131 } 1132 } 1133 return null; 1134 } 1135 1136 @Override 1137 public NetworkCapabilities getNetworkCapabilities(Network network) { 1138 enforceAccessPermission(); 1139 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1140 if (nai != null) { 1141 synchronized (nai) { 1142 return new NetworkCapabilities(nai.networkCapabilities); 1143 } 1144 } 1145 return null; 1146 } 1147 1148 @Override 1149 public NetworkState[] getAllNetworkState() { 1150 enforceAccessPermission(); 1151 final int uid = Binder.getCallingUid(); 1152 final ArrayList<NetworkState> result = Lists.newArrayList(); 1153 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1154 networkType++) { 1155 NetworkState state = getFilteredNetworkState(networkType, uid); 1156 if (state.networkInfo != null) { 1157 result.add(state); 1158 } 1159 } 1160 return result.toArray(new NetworkState[result.size()]); 1161 } 1162 1163 @Override 1164 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1165 enforceAccessPermission(); 1166 final int uid = Binder.getCallingUid(); 1167 final long token = Binder.clearCallingIdentity(); 1168 try { 1169 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1170 if (state.networkInfo != null) { 1171 try { 1172 return mPolicyManager.getNetworkQuotaInfo(state); 1173 } catch (RemoteException e) { 1174 } 1175 } 1176 return null; 1177 } finally { 1178 Binder.restoreCallingIdentity(token); 1179 } 1180 } 1181 1182 @Override 1183 public boolean isActiveNetworkMetered() { 1184 enforceAccessPermission(); 1185 final int uid = Binder.getCallingUid(); 1186 final long token = Binder.clearCallingIdentity(); 1187 try { 1188 return isActiveNetworkMeteredUnchecked(uid); 1189 } finally { 1190 Binder.restoreCallingIdentity(token); 1191 } 1192 } 1193 1194 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1195 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1196 if (state.networkInfo != null) { 1197 try { 1198 return mPolicyManager.isNetworkMetered(state); 1199 } catch (RemoteException e) { 1200 } 1201 } 1202 return false; 1203 } 1204 1205 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1206 @Override 1207 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1208 int deviceType = Integer.parseInt(label); 1209 sendDataActivityBroadcast(deviceType, active, tsNanos); 1210 } 1211 }; 1212 1213 /** 1214 * Ensure that a network route exists to deliver traffic to the specified 1215 * host via the specified network interface. 1216 * @param networkType the type of the network over which traffic to the 1217 * specified host is to be routed 1218 * @param hostAddress the IP address of the host to which the route is 1219 * desired 1220 * @return {@code true} on success, {@code false} on failure 1221 */ 1222 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1223 enforceChangePermission(); 1224 if (mProtectedNetworks.contains(networkType)) { 1225 enforceConnectivityInternalPermission(); 1226 } 1227 1228 InetAddress addr; 1229 try { 1230 addr = InetAddress.getByAddress(hostAddress); 1231 } catch (UnknownHostException e) { 1232 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1233 return false; 1234 } 1235 1236 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1237 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1238 return false; 1239 } 1240 1241 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1242 if (nai == null) { 1243 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1244 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1245 } else { 1246 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1247 } 1248 return false; 1249 } 1250 1251 DetailedState netState; 1252 synchronized (nai) { 1253 netState = nai.networkInfo.getDetailedState(); 1254 } 1255 1256 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1257 if (VDBG) { 1258 log("requestRouteToHostAddress on down network " 1259 + "(" + networkType + ") - dropped" 1260 + " netState=" + netState); 1261 } 1262 return false; 1263 } 1264 1265 final int uid = Binder.getCallingUid(); 1266 final long token = Binder.clearCallingIdentity(); 1267 try { 1268 LinkProperties lp; 1269 int netId; 1270 synchronized (nai) { 1271 lp = nai.linkProperties; 1272 netId = nai.network.netId; 1273 } 1274 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1275 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1276 return ok; 1277 } finally { 1278 Binder.restoreCallingIdentity(token); 1279 } 1280 } 1281 1282 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1283 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1284 if (bestRoute == null) { 1285 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1286 } else { 1287 String iface = bestRoute.getInterface(); 1288 if (bestRoute.getGateway().equals(addr)) { 1289 // if there is no better route, add the implied hostroute for our gateway 1290 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1291 } else { 1292 // if we will connect to this through another route, add a direct route 1293 // to it's gateway 1294 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1295 } 1296 } 1297 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1298 try { 1299 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1300 } catch (Exception e) { 1301 // never crash - catch them all 1302 if (DBG) loge("Exception trying to add a route: " + e); 1303 return false; 1304 } 1305 return true; 1306 } 1307 1308 public void setDataDependency(int networkType, boolean met) { 1309 enforceConnectivityInternalPermission(); 1310 1311 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1312 (met ? ENABLED : DISABLED), networkType)); 1313 } 1314 1315 private void handleSetDependencyMet(int networkType, boolean met) { 1316 if (mNetTrackers[networkType] != null) { 1317 if (DBG) { 1318 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1319 } 1320 mNetTrackers[networkType].setDependencyMet(met); 1321 } 1322 } 1323 1324 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1325 @Override 1326 public void onUidRulesChanged(int uid, int uidRules) { 1327 // caller is NPMS, since we only register with them 1328 if (LOGD_RULES) { 1329 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1330 } 1331 1332 synchronized (mRulesLock) { 1333 // skip update when we've already applied rules 1334 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1335 if (oldRules == uidRules) return; 1336 1337 mUidRules.put(uid, uidRules); 1338 } 1339 1340 // TODO: notify UID when it has requested targeted updates 1341 } 1342 1343 @Override 1344 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1345 // caller is NPMS, since we only register with them 1346 if (LOGD_RULES) { 1347 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1348 } 1349 1350 synchronized (mRulesLock) { 1351 mMeteredIfaces.clear(); 1352 for (String iface : meteredIfaces) { 1353 mMeteredIfaces.add(iface); 1354 } 1355 } 1356 } 1357 1358 @Override 1359 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1360 // caller is NPMS, since we only register with them 1361 if (LOGD_RULES) { 1362 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1363 } 1364 1365 // kick off connectivity change broadcast for active network, since 1366 // global background policy change is radical. 1367 // TODO: Dead code; remove. 1368 // 1369 // final int networkType = mActiveDefaultNetwork; 1370 // if (isNetworkTypeValid(networkType)) { 1371 // final NetworkStateTracker tracker = mNetTrackers[networkType]; 1372 // if (tracker != null) { 1373 // final NetworkInfo info = tracker.getNetworkInfo(); 1374 // if (info != null && info.isConnected()) { 1375 // sendConnectedBroadcast(info); 1376 // } 1377 // } 1378 // } 1379 } 1380 }; 1381 1382 @Override 1383 public void setPolicyDataEnable(int networkType, boolean enabled) { 1384 // only someone like NPMS should only be calling us 1385 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1386 1387 mHandler.sendMessage(mHandler.obtainMessage( 1388 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1389 } 1390 1391 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1392 // TODO - handle this passing to factories 1393// if (isNetworkTypeValid(networkType)) { 1394// final NetworkStateTracker tracker = mNetTrackers[networkType]; 1395// if (tracker != null) { 1396// tracker.setPolicyDataEnable(enabled); 1397// } 1398// } 1399 } 1400 1401 private void enforceInternetPermission() { 1402 mContext.enforceCallingOrSelfPermission( 1403 android.Manifest.permission.INTERNET, 1404 "ConnectivityService"); 1405 } 1406 1407 private void enforceAccessPermission() { 1408 mContext.enforceCallingOrSelfPermission( 1409 android.Manifest.permission.ACCESS_NETWORK_STATE, 1410 "ConnectivityService"); 1411 } 1412 1413 private void enforceChangePermission() { 1414 mContext.enforceCallingOrSelfPermission( 1415 android.Manifest.permission.CHANGE_NETWORK_STATE, 1416 "ConnectivityService"); 1417 } 1418 1419 private void enforceTetherAccessPermission() { 1420 mContext.enforceCallingOrSelfPermission( 1421 android.Manifest.permission.ACCESS_NETWORK_STATE, 1422 "ConnectivityService"); 1423 } 1424 1425 private void enforceConnectivityInternalPermission() { 1426 mContext.enforceCallingOrSelfPermission( 1427 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1428 "ConnectivityService"); 1429 } 1430 1431 public void sendConnectedBroadcast(NetworkInfo info) { 1432 enforceConnectivityInternalPermission(); 1433 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1434 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1435 } 1436 1437 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 1438 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1439 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 1440 } 1441 1442 private void sendInetConditionBroadcast(NetworkInfo info) { 1443 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1444 } 1445 1446 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1447 if (mLockdownTracker != null) { 1448 info = mLockdownTracker.augmentNetworkInfo(info); 1449 } 1450 1451 Intent intent = new Intent(bcastType); 1452 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1453 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1454 if (info.isFailover()) { 1455 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1456 info.setFailover(false); 1457 } 1458 if (info.getReason() != null) { 1459 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1460 } 1461 if (info.getExtraInfo() != null) { 1462 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1463 info.getExtraInfo()); 1464 } 1465 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1466 return intent; 1467 } 1468 1469 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1470 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1471 } 1472 1473 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 1474 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 1475 } 1476 1477 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1478 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1479 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1480 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1481 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1482 final long ident = Binder.clearCallingIdentity(); 1483 try { 1484 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1485 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1486 } finally { 1487 Binder.restoreCallingIdentity(ident); 1488 } 1489 } 1490 1491 private void sendStickyBroadcast(Intent intent) { 1492 synchronized(this) { 1493 if (!mSystemReady) { 1494 mInitialBroadcast = new Intent(intent); 1495 } 1496 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1497 if (DBG) { 1498 log("sendStickyBroadcast: action=" + intent.getAction()); 1499 } 1500 1501 final long ident = Binder.clearCallingIdentity(); 1502 try { 1503 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1504 } finally { 1505 Binder.restoreCallingIdentity(ident); 1506 } 1507 } 1508 } 1509 1510 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 1511 if (delayMs <= 0) { 1512 sendStickyBroadcast(intent); 1513 } else { 1514 if (VDBG) { 1515 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 1516 + intent.getAction()); 1517 } 1518 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1519 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 1520 } 1521 } 1522 1523 void systemReady() { 1524 // start network sampling .. 1525 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 1526 intent.setPackage(mContext.getPackageName()); 1527 1528 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 1529 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 1530 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 1531 1532 loadGlobalProxy(); 1533 1534 synchronized(this) { 1535 mSystemReady = true; 1536 if (mInitialBroadcast != null) { 1537 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1538 mInitialBroadcast = null; 1539 } 1540 } 1541 // load the global proxy at startup 1542 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1543 1544 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1545 // for user to unlock device. 1546 if (!updateLockdownVpn()) { 1547 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1548 mContext.registerReceiver(mUserPresentReceiver, filter); 1549 } 1550 1551 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1552 1553 mPermissionMonitor.startMonitoring(); 1554 } 1555 1556 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1557 @Override 1558 public void onReceive(Context context, Intent intent) { 1559 // Try creating lockdown tracker, since user present usually means 1560 // unlocked keystore. 1561 if (updateLockdownVpn()) { 1562 mContext.unregisterReceiver(this); 1563 } 1564 } 1565 }; 1566 1567 /** @hide */ 1568 @Override 1569 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1570 enforceConnectivityInternalPermission(); 1571 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1572// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1573 } 1574 1575 /** 1576 * Setup data activity tracking for the given network. 1577 * 1578 * Every {@code setupDataActivityTracking} should be paired with a 1579 * {@link #removeDataActivityTracking} for cleanup. 1580 */ 1581 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1582 final String iface = networkAgent.linkProperties.getInterfaceName(); 1583 1584 final int timeout; 1585 int type = ConnectivityManager.TYPE_NONE; 1586 1587 if (networkAgent.networkCapabilities.hasTransport( 1588 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1589 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1590 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1591 5); 1592 type = ConnectivityManager.TYPE_MOBILE; 1593 } else if (networkAgent.networkCapabilities.hasTransport( 1594 NetworkCapabilities.TRANSPORT_WIFI)) { 1595 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1596 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1597 0); 1598 type = ConnectivityManager.TYPE_WIFI; 1599 } else { 1600 // do not track any other networks 1601 timeout = 0; 1602 } 1603 1604 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1605 try { 1606 mNetd.addIdleTimer(iface, timeout, type); 1607 } catch (Exception e) { 1608 // You shall not crash! 1609 loge("Exception in setupDataActivityTracking " + e); 1610 } 1611 } 1612 } 1613 1614 /** 1615 * Remove data activity tracking when network disconnects. 1616 */ 1617 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1618 final String iface = networkAgent.linkProperties.getInterfaceName(); 1619 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1620 1621 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1622 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1623 try { 1624 // the call fails silently if no idletimer setup for this interface 1625 mNetd.removeIdleTimer(iface); 1626 } catch (Exception e) { 1627 loge("Exception in removeDataActivityTracking " + e); 1628 } 1629 } 1630 } 1631 1632 /** 1633 * Reads the network specific MTU size from reources. 1634 * and set it on it's iface. 1635 */ 1636 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1637 final String iface = newLp.getInterfaceName(); 1638 final int mtu = newLp.getMtu(); 1639 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1640 if (VDBG) log("identical MTU - not setting"); 1641 return; 1642 } 1643 1644 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1645 loge("Unexpected mtu value: " + mtu + ", " + iface); 1646 return; 1647 } 1648 1649 // Cannot set MTU without interface name 1650 if (TextUtils.isEmpty(iface)) { 1651 loge("Setting MTU size with null iface."); 1652 return; 1653 } 1654 1655 try { 1656 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1657 mNetd.setMtu(iface, mtu); 1658 } catch (Exception e) { 1659 Slog.e(TAG, "exception in setMtu()" + e); 1660 } 1661 } 1662 1663 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1664 1665 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1666 if (isDefaultNetwork(nai) == false) { 1667 return; 1668 } 1669 1670 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1671 String[] values = null; 1672 if (tcpBufferSizes != null) { 1673 values = tcpBufferSizes.split(","); 1674 } 1675 1676 if (values == null || values.length != 6) { 1677 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1678 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1679 values = tcpBufferSizes.split(","); 1680 } 1681 1682 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1683 1684 try { 1685 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1686 1687 final String prefix = "/sys/kernel/ipv4/tcp_"; 1688 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1689 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1690 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1691 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1692 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1693 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1694 mCurrentTcpBufferSizes = tcpBufferSizes; 1695 } catch (IOException e) { 1696 loge("Can't set TCP buffer sizes:" + e); 1697 } 1698 1699 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 1700 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 1701 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1702 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 1703 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1704 if (rwndValue != 0) { 1705 SystemProperties.set(sysctlKey, rwndValue.toString()); 1706 } 1707 } 1708 1709 private void flushVmDnsCache() { 1710 /* 1711 * Tell the VMs to toss their DNS caches 1712 */ 1713 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1714 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1715 /* 1716 * Connectivity events can happen before boot has completed ... 1717 */ 1718 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1719 final long ident = Binder.clearCallingIdentity(); 1720 try { 1721 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1722 } finally { 1723 Binder.restoreCallingIdentity(ident); 1724 } 1725 } 1726 1727 @Override 1728 public int getRestoreDefaultNetworkDelay(int networkType) { 1729 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1730 NETWORK_RESTORE_DELAY_PROP_NAME); 1731 if(restoreDefaultNetworkDelayStr != null && 1732 restoreDefaultNetworkDelayStr.length() != 0) { 1733 try { 1734 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1735 } catch (NumberFormatException e) { 1736 } 1737 } 1738 // if the system property isn't set, use the value for the apn type 1739 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1740 1741 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1742 (mNetConfigs[networkType] != null)) { 1743 ret = mNetConfigs[networkType].restoreTime; 1744 } 1745 return ret; 1746 } 1747 1748 @Override 1749 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1750 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1751 if (mContext.checkCallingOrSelfPermission( 1752 android.Manifest.permission.DUMP) 1753 != PackageManager.PERMISSION_GRANTED) { 1754 pw.println("Permission Denial: can't dump ConnectivityService " + 1755 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1756 Binder.getCallingUid()); 1757 return; 1758 } 1759 1760 pw.println("NetworkFactories for:"); 1761 pw.increaseIndent(); 1762 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1763 pw.println(nfi.name); 1764 } 1765 pw.decreaseIndent(); 1766 pw.println(); 1767 1768 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1769 pw.print("Active default network: "); 1770 if (defaultNai == null) { 1771 pw.println("none"); 1772 } else { 1773 pw.println(defaultNai.network.netId); 1774 } 1775 pw.println(); 1776 1777 pw.println("Current Networks:"); 1778 pw.increaseIndent(); 1779 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1780 pw.println(nai.toString()); 1781 pw.increaseIndent(); 1782 pw.println("Requests:"); 1783 pw.increaseIndent(); 1784 for (int i = 0; i < nai.networkRequests.size(); i++) { 1785 pw.println(nai.networkRequests.valueAt(i).toString()); 1786 } 1787 pw.decreaseIndent(); 1788 pw.println("Lingered:"); 1789 pw.increaseIndent(); 1790 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1791 pw.decreaseIndent(); 1792 pw.decreaseIndent(); 1793 } 1794 pw.decreaseIndent(); 1795 pw.println(); 1796 1797 pw.println("Network Requests:"); 1798 pw.increaseIndent(); 1799 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1800 pw.println(nri.toString()); 1801 } 1802 pw.println(); 1803 pw.decreaseIndent(); 1804 1805 pw.println("mLegacyTypeTracker:"); 1806 pw.increaseIndent(); 1807 mLegacyTypeTracker.dump(pw); 1808 pw.decreaseIndent(); 1809 pw.println(); 1810 1811 synchronized (this) { 1812 pw.println("NetworkTransitionWakeLock is currently " + 1813 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 1814 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 1815 } 1816 pw.println(); 1817 1818 mTethering.dump(fd, pw, args); 1819 1820 if (mInetLog != null) { 1821 pw.println(); 1822 pw.println("Inet condition reports:"); 1823 pw.increaseIndent(); 1824 for(int i = 0; i < mInetLog.size(); i++) { 1825 pw.println(mInetLog.get(i)); 1826 } 1827 pw.decreaseIndent(); 1828 } 1829 } 1830 1831 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1832 if (nai.network == null) return false; 1833 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1834 if (officialNai != null && officialNai.equals(nai)) return true; 1835 if (officialNai != null || VDBG) { 1836 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1837 " - " + nai); 1838 } 1839 return false; 1840 } 1841 1842 private boolean isRequest(NetworkRequest request) { 1843 return mNetworkRequests.get(request).isRequest; 1844 } 1845 1846 // must be stateless - things change under us. 1847 private class NetworkStateTrackerHandler extends Handler { 1848 public NetworkStateTrackerHandler(Looper looper) { 1849 super(looper); 1850 } 1851 1852 @Override 1853 public void handleMessage(Message msg) { 1854 NetworkInfo info; 1855 switch (msg.what) { 1856 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1857 handleAsyncChannelHalfConnect(msg); 1858 break; 1859 } 1860 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1861 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1862 if (nai != null) nai.asyncChannel.disconnect(); 1863 break; 1864 } 1865 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1866 handleAsyncChannelDisconnected(msg); 1867 break; 1868 } 1869 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1870 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1871 if (nai == null) { 1872 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1873 } else { 1874 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1875 } 1876 break; 1877 } 1878 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1879 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1880 if (nai == null) { 1881 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1882 } else { 1883 if (VDBG) { 1884 log("Update of LinkProperties for " + nai.name() + 1885 "; created=" + nai.created); 1886 } 1887 LinkProperties oldLp = nai.linkProperties; 1888 synchronized (nai) { 1889 nai.linkProperties = (LinkProperties)msg.obj; 1890 } 1891 if (nai.created) updateLinkProperties(nai, oldLp); 1892 } 1893 break; 1894 } 1895 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1896 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1897 if (nai == null) { 1898 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1899 break; 1900 } 1901 info = (NetworkInfo) msg.obj; 1902 updateNetworkInfo(nai, info); 1903 break; 1904 } 1905 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1906 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1907 if (nai == null) { 1908 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1909 break; 1910 } 1911 Integer score = (Integer) msg.obj; 1912 if (score != null) updateNetworkScore(nai, score.intValue()); 1913 break; 1914 } 1915 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1916 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1917 if (nai == null) { 1918 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1919 break; 1920 } 1921 try { 1922 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1923 } catch (Exception e) { 1924 // Never crash! 1925 loge("Exception in addVpnUidRanges: " + e); 1926 } 1927 break; 1928 } 1929 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1930 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1931 if (nai == null) { 1932 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1933 break; 1934 } 1935 try { 1936 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1937 } catch (Exception e) { 1938 // Never crash! 1939 loge("Exception in removeVpnUidRanges: " + e); 1940 } 1941 break; 1942 } 1943 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1944 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1945 if (nai == null) { 1946 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1947 break; 1948 } 1949 if (nai.created && !nai.networkMisc.explicitlySelected) { 1950 loge("ERROR: created network explicitly selected."); 1951 } 1952 nai.networkMisc.explicitlySelected = true; 1953 break; 1954 } 1955 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1956 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1957 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_VALIDATED")) { 1958 boolean valid = (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1959 if (valid) { 1960 if (DBG) log("Validated " + nai.name()); 1961 if (!nai.validated) { 1962 nai.validated = true; 1963 rematchNetworkAndRequests(nai, NascentState.JUST_VALIDATED, 1964 ReapUnvalidatedNetworks.REAP); 1965 // If score has changed, rebroadcast to NetworkFactories. b/17726566 1966 sendUpdatedScoreToFactories(nai); 1967 } 1968 } 1969 updateInetCondition(nai, valid); 1970 // Let the NetworkAgent know the state of its network 1971 nai.asyncChannel.sendMessage( 1972 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 1973 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 1974 0, null); 1975 } 1976 break; 1977 } 1978 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 1979 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1980 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 1981 handleLingerComplete(nai); 1982 } 1983 break; 1984 } 1985 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 1986 if (msg.arg1 == 0) { 1987 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 1988 } else { 1989 NetworkAgentInfo nai = null; 1990 synchronized (mNetworkForNetId) { 1991 nai = mNetworkForNetId.get(msg.arg2); 1992 } 1993 if (nai == null) { 1994 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 1995 break; 1996 } 1997 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 1998 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 1999 } 2000 break; 2001 } 2002 case NetworkStateTracker.EVENT_STATE_CHANGED: { 2003 info = (NetworkInfo) msg.obj; 2004 NetworkInfo.State state = info.getState(); 2005 2006 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 2007 (state == NetworkInfo.State.DISCONNECTED) || 2008 (state == NetworkInfo.State.SUSPENDED)) { 2009 log("ConnectivityChange for " + 2010 info.getTypeName() + ": " + 2011 state + "/" + info.getDetailedState()); 2012 } 2013 2014 EventLogTags.writeConnectivityStateChanged( 2015 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 2016 2017 if (info.isConnectedToProvisioningNetwork()) { 2018 /** 2019 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 2020 * for now its an in between network, its a network that 2021 * is actually a default network but we don't want it to be 2022 * announced as such to keep background applications from 2023 * trying to use it. It turns out that some still try so we 2024 * take the additional step of clearing any default routes 2025 * to the link that may have incorrectly setup by the lower 2026 * levels. 2027 */ 2028 LinkProperties lp = getLinkPropertiesForType(info.getType()); 2029 if (DBG) { 2030 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 2031 } 2032 2033 // Clear any default routes setup by the radio so 2034 // any activity by applications trying to use this 2035 // connection will fail until the provisioning network 2036 // is enabled. 2037 /* 2038 for (RouteInfo r : lp.getRoutes()) { 2039 removeRoute(lp, r, TO_DEFAULT_TABLE, 2040 mNetTrackers[info.getType()].getNetwork().netId); 2041 } 2042 */ 2043 } else if (state == NetworkInfo.State.DISCONNECTED) { 2044 } else if (state == NetworkInfo.State.SUSPENDED) { 2045 } else if (state == NetworkInfo.State.CONNECTED) { 2046 // handleConnect(info); 2047 } 2048 notifyLockdownVpn(null); 2049 break; 2050 } 2051 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 2052 info = (NetworkInfo) msg.obj; 2053 // TODO: Temporary allowing network configuration 2054 // change not resetting sockets. 2055 // @see bug/4455071 2056 /* 2057 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 2058 false); 2059 */ 2060 break; 2061 } 2062 } 2063 } 2064 } 2065 2066 // Cancel any lingering so the linger timeout doesn't teardown a network. 2067 // This should be called when a network begins satisfying a NetworkRequest. 2068 // Note: depending on what state the NetworkMonitor is in (e.g., 2069 // if it's awaiting captive portal login, or if validation failed), this 2070 // may trigger a re-evaluation of the network. 2071 private void unlinger(NetworkAgentInfo nai) { 2072 if (VDBG) log("Canceling linger of " + nai.name()); 2073 nai.networkLingered.clear(); 2074 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2075 } 2076 2077 private void handleAsyncChannelHalfConnect(Message msg) { 2078 AsyncChannel ac = (AsyncChannel) msg.obj; 2079 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2080 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2081 if (VDBG) log("NetworkFactory connected"); 2082 // A network factory has connected. Send it all current NetworkRequests. 2083 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2084 if (nri.isRequest == false) continue; 2085 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2086 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2087 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2088 } 2089 } else { 2090 loge("Error connecting NetworkFactory"); 2091 mNetworkFactoryInfos.remove(msg.obj); 2092 } 2093 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2094 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2095 if (VDBG) log("NetworkAgent connected"); 2096 // A network agent has requested a connection. Establish the connection. 2097 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2098 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2099 } else { 2100 loge("Error connecting NetworkAgent"); 2101 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2102 if (nai != null) { 2103 synchronized (mNetworkForNetId) { 2104 mNetworkForNetId.remove(nai.network.netId); 2105 } 2106 // Just in case. 2107 mLegacyTypeTracker.remove(nai); 2108 } 2109 } 2110 } 2111 } 2112 2113 private void handleAsyncChannelDisconnected(Message msg) { 2114 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2115 if (nai != null) { 2116 if (DBG) { 2117 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2118 } 2119 // A network agent has disconnected. 2120 if (nai.created) { 2121 // Tell netd to clean up the configuration for this network 2122 // (routing rules, DNS, etc). 2123 try { 2124 mNetd.removeNetwork(nai.network.netId); 2125 } catch (Exception e) { 2126 loge("Exception removing network: " + e); 2127 } 2128 } 2129 // TODO - if we move the logic to the network agent (have them disconnect 2130 // because they lost all their requests or because their score isn't good) 2131 // then they would disconnect organically, report their new state and then 2132 // disconnect the channel. 2133 if (nai.networkInfo.isConnected()) { 2134 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2135 null, null); 2136 } 2137 if (isDefaultNetwork(nai)) { 2138 mDefaultInetConditionPublished = 0; 2139 } 2140 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2141 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2142 mNetworkAgentInfos.remove(msg.replyTo); 2143 updateClat(null, nai.linkProperties, nai); 2144 mLegacyTypeTracker.remove(nai); 2145 synchronized (mNetworkForNetId) { 2146 mNetworkForNetId.remove(nai.network.netId); 2147 } 2148 // Since we've lost the network, go through all the requests that 2149 // it was satisfying and see if any other factory can satisfy them. 2150 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2151 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2152 for (int i = 0; i < nai.networkRequests.size(); i++) { 2153 NetworkRequest request = nai.networkRequests.valueAt(i); 2154 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2155 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2156 if (DBG) { 2157 log("Checking for replacement network to handle request " + request ); 2158 } 2159 mNetworkForRequestId.remove(request.requestId); 2160 sendUpdatedScoreToFactories(request, 0); 2161 NetworkAgentInfo alternative = null; 2162 for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) { 2163 if (existing.satisfies(request) && 2164 (alternative == null || 2165 alternative.getCurrentScore() < existing.getCurrentScore())) { 2166 alternative = existing; 2167 } 2168 } 2169 if (alternative != null) { 2170 if (DBG) log(" found replacement in " + alternative.name()); 2171 if (!toActivate.contains(alternative)) { 2172 toActivate.add(alternative); 2173 } 2174 } 2175 } 2176 } 2177 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2178 removeDataActivityTracking(nai); 2179 notifyLockdownVpn(nai); 2180 requestNetworkTransitionWakelock(nai.name()); 2181 } 2182 for (NetworkAgentInfo networkToActivate : toActivate) { 2183 unlinger(networkToActivate); 2184 rematchNetworkAndRequests(networkToActivate, NascentState.NOT_JUST_VALIDATED, 2185 ReapUnvalidatedNetworks.DONT_REAP); 2186 } 2187 } 2188 } 2189 2190 // If this method proves to be too slow then we can maintain a separate 2191 // pendingIntent => NetworkRequestInfo map. 2192 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2193 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2194 Intent intent = pendingIntent.getIntent(); 2195 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2196 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2197 if (existingPendingIntent != null && 2198 existingPendingIntent.getIntent().filterEquals(intent)) { 2199 return entry.getValue(); 2200 } 2201 } 2202 return null; 2203 } 2204 2205 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2206 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2207 2208 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2209 if (existingRequest != null) { // remove the existing request. 2210 if (DBG) log("Replacing " + existingRequest.request + " with " 2211 + nri.request + " because their intents matched."); 2212 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2213 } 2214 handleRegisterNetworkRequest(msg); 2215 } 2216 2217 private void handleRegisterNetworkRequest(Message msg) { 2218 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2219 2220 mNetworkRequests.put(nri.request, nri); 2221 2222 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2223 2224 // Check for the best currently alive network that satisfies this request 2225 NetworkAgentInfo bestNetwork = null; 2226 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2227 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2228 if (network.satisfies(nri.request)) { 2229 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2230 if (!nri.isRequest) { 2231 // Not setting bestNetwork here as a listening NetworkRequest may be 2232 // satisfied by multiple Networks. Instead the request is added to 2233 // each satisfying Network and notified about each. 2234 network.addRequest(nri.request); 2235 notifyNetworkCallback(network, nri); 2236 } else if (bestNetwork == null || 2237 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2238 bestNetwork = network; 2239 } 2240 } 2241 } 2242 if (bestNetwork != null) { 2243 if (DBG) log("using " + bestNetwork.name()); 2244 unlinger(bestNetwork); 2245 bestNetwork.addRequest(nri.request); 2246 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2247 notifyNetworkCallback(bestNetwork, nri); 2248 if (nri.request.legacyType != TYPE_NONE) { 2249 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2250 } 2251 } 2252 2253 if (nri.isRequest) { 2254 if (DBG) log("sending new NetworkRequest to factories"); 2255 final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore(); 2256 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2257 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2258 0, nri.request); 2259 } 2260 } 2261 } 2262 2263 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2264 int callingUid) { 2265 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2266 if (nri != null) { 2267 handleReleaseNetworkRequest(nri.request, callingUid); 2268 } 2269 } 2270 2271 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2272 NetworkRequestInfo nri = mNetworkRequests.get(request); 2273 if (nri != null) { 2274 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2275 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2276 return; 2277 } 2278 if (DBG) log("releasing NetworkRequest " + request); 2279 nri.unlinkDeathRecipient(); 2280 mNetworkRequests.remove(request); 2281 if (nri.isRequest) { 2282 // Find all networks that are satisfying this request and remove the request 2283 // from their request lists. 2284 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2285 if (nai.networkRequests.get(nri.request.requestId) != null) { 2286 nai.networkRequests.remove(nri.request.requestId); 2287 if (DBG) { 2288 log(" Removing from current network " + nai.name() + 2289 ", leaving " + nai.networkRequests.size() + 2290 " requests."); 2291 } 2292 // check if has any requests remaining and if not, 2293 // disconnect (unless it's a VPN). 2294 boolean keep = nai.isVPN(); 2295 for (int i = 0; i < nai.networkRequests.size() && !keep; i++) { 2296 NetworkRequest r = nai.networkRequests.valueAt(i); 2297 if (isRequest(r)) keep = true; 2298 } 2299 if (!keep) { 2300 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2301 nai.asyncChannel.disconnect(); 2302 } 2303 } 2304 } 2305 2306 // Maintain the illusion. When this request arrived, we might have pretended 2307 // that a network connected to serve it, even though the network was already 2308 // connected. Now that this request has gone away, we might have to pretend 2309 // that the network disconnected. LegacyTypeTracker will generate that 2310 // phantom disconnect for this type. 2311 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2312 if (nai != null) { 2313 mNetworkForRequestId.remove(nri.request.requestId); 2314 if (nri.request.legacyType != TYPE_NONE) { 2315 mLegacyTypeTracker.remove(nri.request.legacyType, nai); 2316 } 2317 } 2318 2319 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2320 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2321 nri.request); 2322 } 2323 } else { 2324 // listens don't have a singular affectedNetwork. Check all networks to see 2325 // if this listen request applies and remove it. 2326 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2327 nai.networkRequests.remove(nri.request.requestId); 2328 } 2329 } 2330 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2331 } 2332 } 2333 2334 private class InternalHandler extends Handler { 2335 public InternalHandler(Looper looper) { 2336 super(looper); 2337 } 2338 2339 @Override 2340 public void handleMessage(Message msg) { 2341 switch (msg.what) { 2342 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2343 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2344 String causedBy = null; 2345 synchronized (ConnectivityService.this) { 2346 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2347 mNetTransitionWakeLock.isHeld()) { 2348 mNetTransitionWakeLock.release(); 2349 causedBy = mNetTransitionWakeLockCausedBy; 2350 } else { 2351 break; 2352 } 2353 } 2354 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2355 log("Failed to find a new network - expiring NetTransition Wakelock"); 2356 } else { 2357 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2358 " cleared because we found a replacement network"); 2359 } 2360 break; 2361 } 2362 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2363 handleDeprecatedGlobalHttpProxy(); 2364 break; 2365 } 2366 case EVENT_SET_DEPENDENCY_MET: { 2367 boolean met = (msg.arg1 == ENABLED); 2368 handleSetDependencyMet(msg.arg2, met); 2369 break; 2370 } 2371 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2372 Intent intent = (Intent)msg.obj; 2373 sendStickyBroadcast(intent); 2374 break; 2375 } 2376 case EVENT_SET_POLICY_DATA_ENABLE: { 2377 final int networkType = msg.arg1; 2378 final boolean enabled = msg.arg2 == ENABLED; 2379 handleSetPolicyDataEnable(networkType, enabled); 2380 break; 2381 } 2382 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 2383 int tag = mEnableFailFastMobileDataTag.get(); 2384 if (msg.arg1 == tag) { 2385 MobileDataStateTracker mobileDst = 2386 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 2387 if (mobileDst != null) { 2388 mobileDst.setEnableFailFastMobileData(msg.arg2); 2389 } 2390 } else { 2391 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 2392 + " != tag:" + tag); 2393 } 2394 break; 2395 } 2396 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 2397 handleNetworkSamplingTimeout(); 2398 break; 2399 } 2400 case EVENT_PROXY_HAS_CHANGED: { 2401 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2402 break; 2403 } 2404 case EVENT_REGISTER_NETWORK_FACTORY: { 2405 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2406 break; 2407 } 2408 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2409 handleUnregisterNetworkFactory((Messenger)msg.obj); 2410 break; 2411 } 2412 case EVENT_REGISTER_NETWORK_AGENT: { 2413 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2414 break; 2415 } 2416 case EVENT_REGISTER_NETWORK_REQUEST: 2417 case EVENT_REGISTER_NETWORK_LISTENER: { 2418 handleRegisterNetworkRequest(msg); 2419 break; 2420 } 2421 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: { 2422 handleRegisterNetworkRequestWithIntent(msg); 2423 break; 2424 } 2425 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2426 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2427 break; 2428 } 2429 case EVENT_RELEASE_NETWORK_REQUEST: { 2430 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2431 break; 2432 } 2433 case EVENT_SYSTEM_READY: { 2434 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2435 nai.networkMonitor.systemReady = true; 2436 } 2437 break; 2438 } 2439 } 2440 } 2441 } 2442 2443 // javadoc from interface 2444 public int tether(String iface) { 2445 ConnectivityManager.enforceTetherChangePermission(mContext); 2446 if (isTetheringSupported()) { 2447 return mTethering.tether(iface); 2448 } else { 2449 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2450 } 2451 } 2452 2453 // javadoc from interface 2454 public int untether(String iface) { 2455 ConnectivityManager.enforceTetherChangePermission(mContext); 2456 2457 if (isTetheringSupported()) { 2458 return mTethering.untether(iface); 2459 } else { 2460 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2461 } 2462 } 2463 2464 // javadoc from interface 2465 public int getLastTetherError(String iface) { 2466 enforceTetherAccessPermission(); 2467 2468 if (isTetheringSupported()) { 2469 return mTethering.getLastTetherError(iface); 2470 } else { 2471 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2472 } 2473 } 2474 2475 // TODO - proper iface API for selection by property, inspection, etc 2476 public String[] getTetherableUsbRegexs() { 2477 enforceTetherAccessPermission(); 2478 if (isTetheringSupported()) { 2479 return mTethering.getTetherableUsbRegexs(); 2480 } else { 2481 return new String[0]; 2482 } 2483 } 2484 2485 public String[] getTetherableWifiRegexs() { 2486 enforceTetherAccessPermission(); 2487 if (isTetheringSupported()) { 2488 return mTethering.getTetherableWifiRegexs(); 2489 } else { 2490 return new String[0]; 2491 } 2492 } 2493 2494 public String[] getTetherableBluetoothRegexs() { 2495 enforceTetherAccessPermission(); 2496 if (isTetheringSupported()) { 2497 return mTethering.getTetherableBluetoothRegexs(); 2498 } else { 2499 return new String[0]; 2500 } 2501 } 2502 2503 public int setUsbTethering(boolean enable) { 2504 ConnectivityManager.enforceTetherChangePermission(mContext); 2505 if (isTetheringSupported()) { 2506 return mTethering.setUsbTethering(enable); 2507 } else { 2508 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2509 } 2510 } 2511 2512 // TODO - move iface listing, queries, etc to new module 2513 // javadoc from interface 2514 public String[] getTetherableIfaces() { 2515 enforceTetherAccessPermission(); 2516 return mTethering.getTetherableIfaces(); 2517 } 2518 2519 public String[] getTetheredIfaces() { 2520 enforceTetherAccessPermission(); 2521 return mTethering.getTetheredIfaces(); 2522 } 2523 2524 public String[] getTetheringErroredIfaces() { 2525 enforceTetherAccessPermission(); 2526 return mTethering.getErroredIfaces(); 2527 } 2528 2529 public String[] getTetheredDhcpRanges() { 2530 enforceConnectivityInternalPermission(); 2531 return mTethering.getTetheredDhcpRanges(); 2532 } 2533 2534 // if ro.tether.denied = true we default to no tethering 2535 // gservices could set the secure setting to 1 though to enable it on a build where it 2536 // had previously been turned off. 2537 public boolean isTetheringSupported() { 2538 enforceTetherAccessPermission(); 2539 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2540 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2541 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2542 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2543 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2544 mTethering.getTetherableWifiRegexs().length != 0 || 2545 mTethering.getTetherableBluetoothRegexs().length != 0) && 2546 mTethering.getUpstreamIfaceTypes().length != 0); 2547 } 2548 2549 // Called when we lose the default network and have no replacement yet. 2550 // This will automatically be cleared after X seconds or a new default network 2551 // becomes CONNECTED, whichever happens first. The timer is started by the 2552 // first caller and not restarted by subsequent callers. 2553 private void requestNetworkTransitionWakelock(String forWhom) { 2554 int serialNum = 0; 2555 synchronized (this) { 2556 if (mNetTransitionWakeLock.isHeld()) return; 2557 serialNum = ++mNetTransitionWakeLockSerialNumber; 2558 mNetTransitionWakeLock.acquire(); 2559 mNetTransitionWakeLockCausedBy = forWhom; 2560 } 2561 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2562 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2563 mNetTransitionWakeLockTimeout); 2564 return; 2565 } 2566 2567 // 100 percent is full good, 0 is full bad. 2568 public void reportInetCondition(int networkType, int percentage) { 2569 if (percentage > 50) return; // don't handle good network reports 2570 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2571 if (nai != null) reportBadNetwork(nai.network); 2572 } 2573 2574 public void reportBadNetwork(Network network) { 2575 enforceAccessPermission(); 2576 enforceInternetPermission(); 2577 2578 if (network == null) return; 2579 2580 final int uid = Binder.getCallingUid(); 2581 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2582 if (nai == null) return; 2583 if (DBG) log("reportBadNetwork(" + nai.name() + ") by " + uid); 2584 synchronized (nai) { 2585 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2586 // which isn't meant to work on uncreated networks. 2587 if (!nai.created) return; 2588 2589 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2590 2591 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2592 } 2593 } 2594 2595 public ProxyInfo getProxy() { 2596 // this information is already available as a world read/writable jvm property 2597 // so this API change wouldn't have a benifit. It also breaks the passing 2598 // of proxy info to all the JVMs. 2599 // enforceAccessPermission(); 2600 synchronized (mProxyLock) { 2601 ProxyInfo ret = mGlobalProxy; 2602 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2603 return ret; 2604 } 2605 } 2606 2607 public void setGlobalProxy(ProxyInfo proxyProperties) { 2608 enforceConnectivityInternalPermission(); 2609 2610 synchronized (mProxyLock) { 2611 if (proxyProperties == mGlobalProxy) return; 2612 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2613 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2614 2615 String host = ""; 2616 int port = 0; 2617 String exclList = ""; 2618 String pacFileUrl = ""; 2619 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2620 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2621 if (!proxyProperties.isValid()) { 2622 if (DBG) 2623 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2624 return; 2625 } 2626 mGlobalProxy = new ProxyInfo(proxyProperties); 2627 host = mGlobalProxy.getHost(); 2628 port = mGlobalProxy.getPort(); 2629 exclList = mGlobalProxy.getExclusionListAsString(); 2630 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2631 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2632 } 2633 } else { 2634 mGlobalProxy = null; 2635 } 2636 ContentResolver res = mContext.getContentResolver(); 2637 final long token = Binder.clearCallingIdentity(); 2638 try { 2639 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2640 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2641 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2642 exclList); 2643 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2644 } finally { 2645 Binder.restoreCallingIdentity(token); 2646 } 2647 2648 if (mGlobalProxy == null) { 2649 proxyProperties = mDefaultProxy; 2650 } 2651 sendProxyBroadcast(proxyProperties); 2652 } 2653 } 2654 2655 private void loadGlobalProxy() { 2656 ContentResolver res = mContext.getContentResolver(); 2657 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2658 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2659 String exclList = Settings.Global.getString(res, 2660 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2661 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2662 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2663 ProxyInfo proxyProperties; 2664 if (!TextUtils.isEmpty(pacFileUrl)) { 2665 proxyProperties = new ProxyInfo(pacFileUrl); 2666 } else { 2667 proxyProperties = new ProxyInfo(host, port, exclList); 2668 } 2669 if (!proxyProperties.isValid()) { 2670 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2671 return; 2672 } 2673 2674 synchronized (mProxyLock) { 2675 mGlobalProxy = proxyProperties; 2676 } 2677 } 2678 } 2679 2680 public ProxyInfo getGlobalProxy() { 2681 // this information is already available as a world read/writable jvm property 2682 // so this API change wouldn't have a benifit. It also breaks the passing 2683 // of proxy info to all the JVMs. 2684 // enforceAccessPermission(); 2685 synchronized (mProxyLock) { 2686 return mGlobalProxy; 2687 } 2688 } 2689 2690 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2691 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2692 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2693 proxy = null; 2694 } 2695 synchronized (mProxyLock) { 2696 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2697 if (mDefaultProxy == proxy) return; // catches repeated nulls 2698 if (proxy != null && !proxy.isValid()) { 2699 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2700 return; 2701 } 2702 2703 // This call could be coming from the PacManager, containing the port of the local 2704 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2705 // global (to get the correct local port), and send a broadcast. 2706 // TODO: Switch PacManager to have its own message to send back rather than 2707 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2708 if ((mGlobalProxy != null) && (proxy != null) 2709 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2710 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2711 mGlobalProxy = proxy; 2712 sendProxyBroadcast(mGlobalProxy); 2713 return; 2714 } 2715 mDefaultProxy = proxy; 2716 2717 if (mGlobalProxy != null) return; 2718 if (!mDefaultProxyDisabled) { 2719 sendProxyBroadcast(proxy); 2720 } 2721 } 2722 } 2723 2724 private void handleDeprecatedGlobalHttpProxy() { 2725 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2726 Settings.Global.HTTP_PROXY); 2727 if (!TextUtils.isEmpty(proxy)) { 2728 String data[] = proxy.split(":"); 2729 if (data.length == 0) { 2730 return; 2731 } 2732 2733 String proxyHost = data[0]; 2734 int proxyPort = 8080; 2735 if (data.length > 1) { 2736 try { 2737 proxyPort = Integer.parseInt(data[1]); 2738 } catch (NumberFormatException e) { 2739 return; 2740 } 2741 } 2742 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2743 setGlobalProxy(p); 2744 } 2745 } 2746 2747 private void sendProxyBroadcast(ProxyInfo proxy) { 2748 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2749 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2750 if (DBG) log("sending Proxy Broadcast for " + proxy); 2751 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2752 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2753 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2754 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2755 final long ident = Binder.clearCallingIdentity(); 2756 try { 2757 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2758 } finally { 2759 Binder.restoreCallingIdentity(ident); 2760 } 2761 } 2762 2763 private static class SettingsObserver extends ContentObserver { 2764 private int mWhat; 2765 private Handler mHandler; 2766 SettingsObserver(Handler handler, int what) { 2767 super(handler); 2768 mHandler = handler; 2769 mWhat = what; 2770 } 2771 2772 void observe(Context context) { 2773 ContentResolver resolver = context.getContentResolver(); 2774 resolver.registerContentObserver(Settings.Global.getUriFor( 2775 Settings.Global.HTTP_PROXY), false, this); 2776 } 2777 2778 @Override 2779 public void onChange(boolean selfChange) { 2780 mHandler.obtainMessage(mWhat).sendToTarget(); 2781 } 2782 } 2783 2784 private static void log(String s) { 2785 Slog.d(TAG, s); 2786 } 2787 2788 private static void loge(String s) { 2789 Slog.e(TAG, s); 2790 } 2791 2792 private static <T> T checkNotNull(T value, String message) { 2793 if (value == null) { 2794 throw new NullPointerException(message); 2795 } 2796 return value; 2797 } 2798 2799 /** 2800 * Prepare for a VPN application. 2801 * Permissions are checked in Vpn class. 2802 * @hide 2803 */ 2804 @Override 2805 public boolean prepareVpn(String oldPackage, String newPackage) { 2806 throwIfLockdownEnabled(); 2807 int user = UserHandle.getUserId(Binder.getCallingUid()); 2808 synchronized(mVpns) { 2809 return mVpns.get(user).prepare(oldPackage, newPackage); 2810 } 2811 } 2812 2813 /** 2814 * Set whether the current VPN package has the ability to launch VPNs without 2815 * user intervention. This method is used by system-privileged apps. 2816 * Permissions are checked in Vpn class. 2817 * @hide 2818 */ 2819 @Override 2820 public void setVpnPackageAuthorization(boolean authorized) { 2821 int user = UserHandle.getUserId(Binder.getCallingUid()); 2822 synchronized(mVpns) { 2823 mVpns.get(user).setPackageAuthorization(authorized); 2824 } 2825 } 2826 2827 /** 2828 * Configure a TUN interface and return its file descriptor. Parameters 2829 * are encoded and opaque to this class. This method is used by VpnBuilder 2830 * and not available in ConnectivityManager. Permissions are checked in 2831 * Vpn class. 2832 * @hide 2833 */ 2834 @Override 2835 public ParcelFileDescriptor establishVpn(VpnConfig config) { 2836 throwIfLockdownEnabled(); 2837 int user = UserHandle.getUserId(Binder.getCallingUid()); 2838 synchronized(mVpns) { 2839 return mVpns.get(user).establish(config); 2840 } 2841 } 2842 2843 /** 2844 * Start legacy VPN, controlling native daemons as needed. Creates a 2845 * secondary thread to perform connection work, returning quickly. 2846 */ 2847 @Override 2848 public void startLegacyVpn(VpnProfile profile) { 2849 throwIfLockdownEnabled(); 2850 final LinkProperties egress = getActiveLinkProperties(); 2851 if (egress == null) { 2852 throw new IllegalStateException("Missing active network connection"); 2853 } 2854 int user = UserHandle.getUserId(Binder.getCallingUid()); 2855 synchronized(mVpns) { 2856 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 2857 } 2858 } 2859 2860 /** 2861 * Return the information of the ongoing legacy VPN. This method is used 2862 * by VpnSettings and not available in ConnectivityManager. Permissions 2863 * are checked in Vpn class. 2864 * @hide 2865 */ 2866 @Override 2867 public LegacyVpnInfo getLegacyVpnInfo() { 2868 throwIfLockdownEnabled(); 2869 int user = UserHandle.getUserId(Binder.getCallingUid()); 2870 synchronized(mVpns) { 2871 return mVpns.get(user).getLegacyVpnInfo(); 2872 } 2873 } 2874 2875 /** 2876 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 2877 * not available in ConnectivityManager. 2878 * Permissions are checked in Vpn class. 2879 * @hide 2880 */ 2881 @Override 2882 public VpnConfig getVpnConfig() { 2883 int user = UserHandle.getUserId(Binder.getCallingUid()); 2884 synchronized(mVpns) { 2885 return mVpns.get(user).getVpnConfig(); 2886 } 2887 } 2888 2889 @Override 2890 public boolean updateLockdownVpn() { 2891 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 2892 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 2893 return false; 2894 } 2895 2896 // Tear down existing lockdown if profile was removed 2897 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 2898 if (mLockdownEnabled) { 2899 if (!mKeyStore.isUnlocked()) { 2900 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 2901 return false; 2902 } 2903 2904 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 2905 final VpnProfile profile = VpnProfile.decode( 2906 profileName, mKeyStore.get(Credentials.VPN + profileName)); 2907 int user = UserHandle.getUserId(Binder.getCallingUid()); 2908 synchronized(mVpns) { 2909 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 2910 profile)); 2911 } 2912 } else { 2913 setLockdownTracker(null); 2914 } 2915 2916 return true; 2917 } 2918 2919 /** 2920 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 2921 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 2922 */ 2923 private void setLockdownTracker(LockdownVpnTracker tracker) { 2924 // Shutdown any existing tracker 2925 final LockdownVpnTracker existing = mLockdownTracker; 2926 mLockdownTracker = null; 2927 if (existing != null) { 2928 existing.shutdown(); 2929 } 2930 2931 try { 2932 if (tracker != null) { 2933 mNetd.setFirewallEnabled(true); 2934 mNetd.setFirewallInterfaceRule("lo", true); 2935 mLockdownTracker = tracker; 2936 mLockdownTracker.init(); 2937 } else { 2938 mNetd.setFirewallEnabled(false); 2939 } 2940 } catch (RemoteException e) { 2941 // ignored; NMS lives inside system_server 2942 } 2943 } 2944 2945 private void throwIfLockdownEnabled() { 2946 if (mLockdownEnabled) { 2947 throw new IllegalStateException("Unavailable in lockdown mode"); 2948 } 2949 } 2950 2951 public void supplyMessenger(int networkType, Messenger messenger) { 2952 enforceConnectivityInternalPermission(); 2953 2954 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 2955 mNetTrackers[networkType].supplyMessenger(messenger); 2956 } 2957 } 2958 2959 public int findConnectionTypeForIface(String iface) { 2960 enforceConnectivityInternalPermission(); 2961 2962 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 2963 2964 synchronized(mNetworkForNetId) { 2965 for (int i = 0; i < mNetworkForNetId.size(); i++) { 2966 NetworkAgentInfo nai = mNetworkForNetId.valueAt(i); 2967 LinkProperties lp = nai.linkProperties; 2968 if (lp != null && iface.equals(lp.getInterfaceName()) && nai.networkInfo != null) { 2969 return nai.networkInfo.getType(); 2970 } 2971 } 2972 } 2973 return ConnectivityManager.TYPE_NONE; 2974 } 2975 2976 /** 2977 * Have mobile data fail fast if enabled. 2978 * 2979 * @param enabled DctConstants.ENABLED/DISABLED 2980 */ 2981 private void setEnableFailFastMobileData(int enabled) { 2982 int tag; 2983 2984 if (enabled == DctConstants.ENABLED) { 2985 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 2986 } else { 2987 tag = mEnableFailFastMobileDataTag.get(); 2988 } 2989 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 2990 enabled)); 2991 } 2992 2993 @Override 2994 public int checkMobileProvisioning(int suggestedTimeOutMs) { 2995 // TODO: Remove? Any reason to trigger a provisioning check? 2996 return -1; 2997 } 2998 2999 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3000 private volatile boolean mIsNotificationVisible = false; 3001 3002 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3003 if (DBG) { 3004 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3005 + " action=" + action); 3006 } 3007 Intent intent = new Intent(action); 3008 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3009 // Concatenate the range of types onto the range of NetIDs. 3010 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3011 setProvNotificationVisibleIntent(visible, id, networkType, null, pendingIntent); 3012 } 3013 3014 /** 3015 * Show or hide network provisioning notificaitons. 3016 * 3017 * @param id an identifier that uniquely identifies this notification. This must match 3018 * between show and hide calls. We use the NetID value but for legacy callers 3019 * we concatenate the range of types with the range of NetIDs. 3020 */ 3021 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 3022 String extraInfo, PendingIntent intent) { 3023 if (DBG) { 3024 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 3025 networkType + " extraInfo=" + extraInfo); 3026 } 3027 3028 Resources r = Resources.getSystem(); 3029 NotificationManager notificationManager = (NotificationManager) mContext 3030 .getSystemService(Context.NOTIFICATION_SERVICE); 3031 3032 if (visible) { 3033 CharSequence title; 3034 CharSequence details; 3035 int icon; 3036 Notification notification = new Notification(); 3037 switch (networkType) { 3038 case ConnectivityManager.TYPE_WIFI: 3039 title = r.getString(R.string.wifi_available_sign_in, 0); 3040 details = r.getString(R.string.network_available_sign_in_detailed, 3041 extraInfo); 3042 icon = R.drawable.stat_notify_wifi_in_range; 3043 break; 3044 case ConnectivityManager.TYPE_MOBILE: 3045 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3046 title = r.getString(R.string.network_available_sign_in, 0); 3047 // TODO: Change this to pull from NetworkInfo once a printable 3048 // name has been added to it 3049 details = mTelephonyManager.getNetworkOperatorName(); 3050 icon = R.drawable.stat_notify_rssi_in_range; 3051 break; 3052 default: 3053 title = r.getString(R.string.network_available_sign_in, 0); 3054 details = r.getString(R.string.network_available_sign_in_detailed, 3055 extraInfo); 3056 icon = R.drawable.stat_notify_rssi_in_range; 3057 break; 3058 } 3059 3060 notification.when = 0; 3061 notification.icon = icon; 3062 notification.flags = Notification.FLAG_AUTO_CANCEL; 3063 notification.tickerText = title; 3064 notification.color = mContext.getResources().getColor( 3065 com.android.internal.R.color.system_notification_accent_color); 3066 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3067 notification.contentIntent = intent; 3068 3069 try { 3070 notificationManager.notify(NOTIFICATION_ID, id, notification); 3071 } catch (NullPointerException npe) { 3072 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 3073 npe.printStackTrace(); 3074 } 3075 } else { 3076 try { 3077 notificationManager.cancel(NOTIFICATION_ID, id); 3078 } catch (NullPointerException npe) { 3079 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 3080 npe.printStackTrace(); 3081 } 3082 } 3083 mIsNotificationVisible = visible; 3084 } 3085 3086 /** Location to an updatable file listing carrier provisioning urls. 3087 * An example: 3088 * 3089 * <?xml version="1.0" encoding="utf-8"?> 3090 * <provisioningUrls> 3091 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3092 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3093 * </provisioningUrls> 3094 */ 3095 private static final String PROVISIONING_URL_PATH = 3096 "/data/misc/radio/provisioning_urls.xml"; 3097 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3098 3099 /** XML tag for root element. */ 3100 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3101 /** XML tag for individual url */ 3102 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3103 /** XML tag for redirected url */ 3104 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3105 /** XML attribute for mcc */ 3106 private static final String ATTR_MCC = "mcc"; 3107 /** XML attribute for mnc */ 3108 private static final String ATTR_MNC = "mnc"; 3109 3110 private static final int REDIRECTED_PROVISIONING = 1; 3111 private static final int PROVISIONING = 2; 3112 3113 private String getProvisioningUrlBaseFromFile(int type) { 3114 FileReader fileReader = null; 3115 XmlPullParser parser = null; 3116 Configuration config = mContext.getResources().getConfiguration(); 3117 String tagType; 3118 3119 switch (type) { 3120 case PROVISIONING: 3121 tagType = TAG_PROVISIONING_URL; 3122 break; 3123 case REDIRECTED_PROVISIONING: 3124 tagType = TAG_REDIRECTED_URL; 3125 break; 3126 default: 3127 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3128 type); 3129 } 3130 3131 try { 3132 fileReader = new FileReader(mProvisioningUrlFile); 3133 parser = Xml.newPullParser(); 3134 parser.setInput(fileReader); 3135 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3136 3137 while (true) { 3138 XmlUtils.nextElement(parser); 3139 3140 String element = parser.getName(); 3141 if (element == null) break; 3142 3143 if (element.equals(tagType)) { 3144 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3145 try { 3146 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3147 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3148 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3149 parser.next(); 3150 if (parser.getEventType() == XmlPullParser.TEXT) { 3151 return parser.getText(); 3152 } 3153 } 3154 } 3155 } catch (NumberFormatException e) { 3156 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3157 } 3158 } 3159 } 3160 return null; 3161 } catch (FileNotFoundException e) { 3162 loge("Carrier Provisioning Urls file not found"); 3163 } catch (XmlPullParserException e) { 3164 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3165 } catch (IOException e) { 3166 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3167 } finally { 3168 if (fileReader != null) { 3169 try { 3170 fileReader.close(); 3171 } catch (IOException e) {} 3172 } 3173 } 3174 return null; 3175 } 3176 3177 @Override 3178 public String getMobileRedirectedProvisioningUrl() { 3179 enforceConnectivityInternalPermission(); 3180 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3181 if (TextUtils.isEmpty(url)) { 3182 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3183 } 3184 return url; 3185 } 3186 3187 @Override 3188 public String getMobileProvisioningUrl() { 3189 enforceConnectivityInternalPermission(); 3190 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3191 if (TextUtils.isEmpty(url)) { 3192 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3193 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3194 } else { 3195 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3196 } 3197 // populate the iccid, imei and phone number in the provisioning url. 3198 if (!TextUtils.isEmpty(url)) { 3199 String phoneNumber = mTelephonyManager.getLine1Number(); 3200 if (TextUtils.isEmpty(phoneNumber)) { 3201 phoneNumber = "0000000000"; 3202 } 3203 url = String.format(url, 3204 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3205 mTelephonyManager.getDeviceId() /* IMEI */, 3206 phoneNumber /* Phone numer */); 3207 } 3208 3209 return url; 3210 } 3211 3212 @Override 3213 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3214 String action) { 3215 enforceConnectivityInternalPermission(); 3216 final long ident = Binder.clearCallingIdentity(); 3217 try { 3218 setProvNotificationVisible(visible, networkType, action); 3219 } finally { 3220 Binder.restoreCallingIdentity(ident); 3221 } 3222 } 3223 3224 @Override 3225 public void setAirplaneMode(boolean enable) { 3226 enforceConnectivityInternalPermission(); 3227 final long ident = Binder.clearCallingIdentity(); 3228 try { 3229 final ContentResolver cr = mContext.getContentResolver(); 3230 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3231 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3232 intent.putExtra("state", enable); 3233 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3234 } finally { 3235 Binder.restoreCallingIdentity(ident); 3236 } 3237 } 3238 3239 private void onUserStart(int userId) { 3240 synchronized(mVpns) { 3241 Vpn userVpn = mVpns.get(userId); 3242 if (userVpn != null) { 3243 loge("Starting user already has a VPN"); 3244 return; 3245 } 3246 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, this, userId); 3247 mVpns.put(userId, userVpn); 3248 } 3249 } 3250 3251 private void onUserStop(int userId) { 3252 synchronized(mVpns) { 3253 Vpn userVpn = mVpns.get(userId); 3254 if (userVpn == null) { 3255 loge("Stopping user has no VPN"); 3256 return; 3257 } 3258 mVpns.delete(userId); 3259 } 3260 } 3261 3262 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3263 @Override 3264 public void onReceive(Context context, Intent intent) { 3265 final String action = intent.getAction(); 3266 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3267 if (userId == UserHandle.USER_NULL) return; 3268 3269 if (Intent.ACTION_USER_STARTING.equals(action)) { 3270 onUserStart(userId); 3271 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3272 onUserStop(userId); 3273 } 3274 } 3275 }; 3276 3277 /* Infrastructure for network sampling */ 3278 3279 private void handleNetworkSamplingTimeout() { 3280 3281 if (SAMPLE_DBG) log("Sampling interval elapsed, updating statistics .."); 3282 3283 // initialize list of interfaces .. 3284 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 3285 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 3286 for (NetworkStateTracker tracker : mNetTrackers) { 3287 if (tracker != null) { 3288 String ifaceName = tracker.getNetworkInterfaceName(); 3289 if (ifaceName != null) { 3290 mapIfaceToSample.put(ifaceName, null); 3291 } 3292 } 3293 } 3294 3295 // Read samples for all interfaces 3296 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 3297 3298 // process samples for all networks 3299 for (NetworkStateTracker tracker : mNetTrackers) { 3300 if (tracker != null) { 3301 String ifaceName = tracker.getNetworkInterfaceName(); 3302 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 3303 if (ss != null) { 3304 // end the previous sampling cycle 3305 tracker.stopSampling(ss); 3306 // start a new sampling cycle .. 3307 tracker.startSampling(ss); 3308 } 3309 } 3310 } 3311 3312 if (SAMPLE_DBG) log("Done."); 3313 3314 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 3315 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 3316 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 3317 3318 if (SAMPLE_DBG) { 3319 log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 3320 } 3321 3322 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 3323 } 3324 3325 /** 3326 * Sets a network sampling alarm. 3327 */ 3328 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 3329 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 3330 int alarmType; 3331 if (Resources.getSystem().getBoolean( 3332 R.bool.config_networkSamplingWakesDevice)) { 3333 alarmType = AlarmManager.ELAPSED_REALTIME_WAKEUP; 3334 } else { 3335 alarmType = AlarmManager.ELAPSED_REALTIME; 3336 } 3337 mAlarmManager.set(alarmType, wakeupTime, intent); 3338 } 3339 3340 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3341 new HashMap<Messenger, NetworkFactoryInfo>(); 3342 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3343 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3344 3345 private static class NetworkFactoryInfo { 3346 public final String name; 3347 public final Messenger messenger; 3348 public final AsyncChannel asyncChannel; 3349 3350 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3351 this.name = name; 3352 this.messenger = messenger; 3353 this.asyncChannel = asyncChannel; 3354 } 3355 } 3356 3357 /** 3358 * Tracks info about the requester. 3359 * Also used to notice when the calling process dies so we can self-expire 3360 */ 3361 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3362 static final boolean REQUEST = true; 3363 static final boolean LISTEN = false; 3364 3365 final NetworkRequest request; 3366 final PendingIntent mPendingIntent; 3367 private final IBinder mBinder; 3368 final int mPid; 3369 final int mUid; 3370 final Messenger messenger; 3371 final boolean isRequest; 3372 3373 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3374 request = r; 3375 mPendingIntent = pi; 3376 messenger = null; 3377 mBinder = null; 3378 mPid = getCallingPid(); 3379 mUid = getCallingUid(); 3380 this.isRequest = isRequest; 3381 } 3382 3383 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3384 super(); 3385 messenger = m; 3386 request = r; 3387 mBinder = binder; 3388 mPid = getCallingPid(); 3389 mUid = getCallingUid(); 3390 this.isRequest = isRequest; 3391 mPendingIntent = null; 3392 3393 try { 3394 mBinder.linkToDeath(this, 0); 3395 } catch (RemoteException e) { 3396 binderDied(); 3397 } 3398 } 3399 3400 void unlinkDeathRecipient() { 3401 if (mBinder != null) { 3402 mBinder.unlinkToDeath(this, 0); 3403 } 3404 } 3405 3406 public void binderDied() { 3407 log("ConnectivityService NetworkRequestInfo binderDied(" + 3408 request + ", " + mBinder + ")"); 3409 releaseNetworkRequest(request); 3410 } 3411 3412 public String toString() { 3413 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3414 mPid + " for " + request + 3415 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3416 } 3417 } 3418 3419 @Override 3420 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3421 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3422 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3423 enforceNetworkRequestPermissions(networkCapabilities); 3424 enforceMeteredApnPolicy(networkCapabilities); 3425 3426 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3427 throw new IllegalArgumentException("Bad timeout specified"); 3428 } 3429 3430 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3431 nextNetworkRequestId()); 3432 if (DBG) log("requestNetwork for " + networkRequest); 3433 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3434 NetworkRequestInfo.REQUEST); 3435 3436 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3437 if (timeoutMs > 0) { 3438 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3439 nri), timeoutMs); 3440 } 3441 return networkRequest; 3442 } 3443 3444 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3445 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 3446 == false) { 3447 enforceConnectivityInternalPermission(); 3448 } else { 3449 enforceChangePermission(); 3450 } 3451 } 3452 3453 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3454 // if UID is restricted, don't allow them to bring up metered APNs 3455 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED) 3456 == false) { 3457 final int uidRules; 3458 final int uid = Binder.getCallingUid(); 3459 synchronized(mRulesLock) { 3460 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3461 } 3462 if ((uidRules & RULE_REJECT_METERED) != 0) { 3463 // we could silently fail or we can filter the available nets to only give 3464 // them those they have access to. Chose the more useful 3465 networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED); 3466 } 3467 } 3468 } 3469 3470 @Override 3471 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3472 PendingIntent operation) { 3473 checkNotNull(operation, "PendingIntent cannot be null."); 3474 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3475 enforceNetworkRequestPermissions(networkCapabilities); 3476 enforceMeteredApnPolicy(networkCapabilities); 3477 3478 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3479 nextNetworkRequestId()); 3480 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3481 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3482 NetworkRequestInfo.REQUEST); 3483 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3484 nri)); 3485 return networkRequest; 3486 } 3487 3488 @Override 3489 public void releasePendingNetworkRequest(PendingIntent operation) { 3490 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3491 getCallingUid(), 0, operation)); 3492 } 3493 3494 @Override 3495 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3496 Messenger messenger, IBinder binder) { 3497 enforceAccessPermission(); 3498 3499 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3500 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3501 if (DBG) log("listenForNetwork for " + networkRequest); 3502 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3503 NetworkRequestInfo.LISTEN); 3504 3505 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3506 return networkRequest; 3507 } 3508 3509 @Override 3510 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3511 PendingIntent operation) { 3512 } 3513 3514 @Override 3515 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3516 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3517 0, networkRequest)); 3518 } 3519 3520 @Override 3521 public void registerNetworkFactory(Messenger messenger, String name) { 3522 enforceConnectivityInternalPermission(); 3523 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3524 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3525 } 3526 3527 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3528 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3529 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3530 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3531 } 3532 3533 @Override 3534 public void unregisterNetworkFactory(Messenger messenger) { 3535 enforceConnectivityInternalPermission(); 3536 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3537 } 3538 3539 private void handleUnregisterNetworkFactory(Messenger messenger) { 3540 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3541 if (nfi == null) { 3542 loge("Failed to find Messenger in unregisterNetworkFactory"); 3543 return; 3544 } 3545 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3546 } 3547 3548 /** 3549 * NetworkAgentInfo supporting a request by requestId. 3550 * These have already been vetted (their Capabilities satisfy the request) 3551 * and the are the highest scored network available. 3552 * the are keyed off the Requests requestId. 3553 */ 3554 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3555 new SparseArray<NetworkAgentInfo>(); 3556 3557 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3558 new SparseArray<NetworkAgentInfo>(); 3559 3560 // NetworkAgentInfo keyed off its connecting messenger 3561 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3562 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3563 new HashMap<Messenger, NetworkAgentInfo>(); 3564 3565 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3566 private final NetworkRequest mDefaultRequest; 3567 3568 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3569 return mNetworkForRequestId.get(mDefaultRequest.requestId) == nai; 3570 } 3571 3572 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3573 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3574 int currentScore, NetworkMisc networkMisc) { 3575 enforceConnectivityInternalPermission(); 3576 3577 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3578 // satisfies mDefaultRequest. 3579 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3580 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 3581 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler, 3582 new NetworkMisc(networkMisc), mDefaultRequest); 3583 synchronized (this) { 3584 nai.networkMonitor.systemReady = mSystemReady; 3585 } 3586 if (DBG) log("registerNetworkAgent " + nai); 3587 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3588 } 3589 3590 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3591 if (VDBG) log("Got NetworkAgent Messenger"); 3592 mNetworkAgentInfos.put(na.messenger, na); 3593 assignNextNetId(na); 3594 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3595 NetworkInfo networkInfo = na.networkInfo; 3596 na.networkInfo = null; 3597 updateNetworkInfo(na, networkInfo); 3598 } 3599 3600 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3601 LinkProperties newLp = networkAgent.linkProperties; 3602 int netId = networkAgent.network.netId; 3603 3604 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3605 // we do anything else, make sure its LinkProperties are accurate. 3606 if (networkAgent.clatd != null) { 3607 networkAgent.clatd.fixupLinkProperties(oldLp); 3608 } 3609 3610 updateInterfaces(newLp, oldLp, netId); 3611 updateMtu(newLp, oldLp); 3612 // TODO - figure out what to do for clat 3613// for (LinkProperties lp : newLp.getStackedLinks()) { 3614// updateMtu(lp, null); 3615// } 3616 updateTcpBufferSizes(networkAgent); 3617 3618 // TODO: deprecate and remove mDefaultDns when we can do so safely. 3619 // For now, use it only when the network has Internet access. http://b/18327075 3620 final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3621 NetworkCapabilities.NET_CAPABILITY_INTERNET); 3622 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3623 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3624 3625 updateClat(newLp, oldLp, networkAgent); 3626 if (isDefaultNetwork(networkAgent)) handleApplyDefaultProxy(newLp.getHttpProxy()); 3627 // TODO - move this check to cover the whole function 3628 if (!Objects.equals(newLp, oldLp)) { 3629 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3630 } 3631 } 3632 3633 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3634 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3635 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3636 3637 if (!wasRunningClat && shouldRunClat) { 3638 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3639 nai.clatd.start(); 3640 } else if (wasRunningClat && !shouldRunClat) { 3641 nai.clatd.stop(); 3642 } 3643 } 3644 3645 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3646 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3647 if (oldLp != null) { 3648 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3649 } else if (newLp != null) { 3650 interfaceDiff.added = newLp.getAllInterfaceNames(); 3651 } 3652 for (String iface : interfaceDiff.added) { 3653 try { 3654 if (DBG) log("Adding iface " + iface + " to network " + netId); 3655 mNetd.addInterfaceToNetwork(iface, netId); 3656 } catch (Exception e) { 3657 loge("Exception adding interface: " + e); 3658 } 3659 } 3660 for (String iface : interfaceDiff.removed) { 3661 try { 3662 if (DBG) log("Removing iface " + iface + " from network " + netId); 3663 mNetd.removeInterfaceFromNetwork(iface, netId); 3664 } catch (Exception e) { 3665 loge("Exception removing interface: " + e); 3666 } 3667 } 3668 } 3669 3670 /** 3671 * Have netd update routes from oldLp to newLp. 3672 * @return true if routes changed between oldLp and newLp 3673 */ 3674 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3675 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3676 if (oldLp != null) { 3677 routeDiff = oldLp.compareAllRoutes(newLp); 3678 } else if (newLp != null) { 3679 routeDiff.added = newLp.getAllRoutes(); 3680 } 3681 3682 // add routes before removing old in case it helps with continuous connectivity 3683 3684 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3685 for (RouteInfo route : routeDiff.added) { 3686 if (route.hasGateway()) continue; 3687 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3688 try { 3689 mNetd.addRoute(netId, route); 3690 } catch (Exception e) { 3691 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3692 loge("Exception in addRoute for non-gateway: " + e); 3693 } 3694 } 3695 } 3696 for (RouteInfo route : routeDiff.added) { 3697 if (route.hasGateway() == false) continue; 3698 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3699 try { 3700 mNetd.addRoute(netId, route); 3701 } catch (Exception e) { 3702 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3703 loge("Exception in addRoute for gateway: " + e); 3704 } 3705 } 3706 } 3707 3708 for (RouteInfo route : routeDiff.removed) { 3709 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3710 try { 3711 mNetd.removeRoute(netId, route); 3712 } catch (Exception e) { 3713 loge("Exception in removeRoute: " + e); 3714 } 3715 } 3716 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3717 } 3718 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 3719 boolean flush, boolean useDefaultDns) { 3720 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 3721 Collection<InetAddress> dnses = newLp.getDnsServers(); 3722 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 3723 dnses = new ArrayList(); 3724 dnses.add(mDefaultDns); 3725 if (DBG) { 3726 loge("no dns provided for netId " + netId + ", so using defaults"); 3727 } 3728 } 3729 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 3730 try { 3731 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 3732 newLp.getDomains()); 3733 } catch (Exception e) { 3734 loge("Exception in setDnsServersForNetwork: " + e); 3735 } 3736 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 3737 if (defaultNai != null && defaultNai.network.netId == netId) { 3738 setDefaultDnsSystemProperties(dnses); 3739 } 3740 flushVmDnsCache(); 3741 } else if (flush) { 3742 try { 3743 mNetd.flushNetworkDnsCache(netId); 3744 } catch (Exception e) { 3745 loge("Exception in flushNetworkDnsCache: " + e); 3746 } 3747 flushVmDnsCache(); 3748 } 3749 } 3750 3751 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 3752 int last = 0; 3753 for (InetAddress dns : dnses) { 3754 ++last; 3755 String key = "net.dns" + last; 3756 String value = dns.getHostAddress(); 3757 SystemProperties.set(key, value); 3758 } 3759 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 3760 String key = "net.dns" + i; 3761 SystemProperties.set(key, ""); 3762 } 3763 mNumDnsEntries = last; 3764 } 3765 3766 3767 private void updateCapabilities(NetworkAgentInfo networkAgent, 3768 NetworkCapabilities networkCapabilities) { 3769 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 3770 synchronized (networkAgent) { 3771 networkAgent.networkCapabilities = networkCapabilities; 3772 } 3773 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 3774 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 3775 } 3776 } 3777 3778 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 3779 for (int i = 0; i < nai.networkRequests.size(); i++) { 3780 NetworkRequest nr = nai.networkRequests.valueAt(i); 3781 // Don't send listening requests to factories. b/17393458 3782 if (!isRequest(nr)) continue; 3783 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 3784 } 3785 } 3786 3787 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 3788 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 3789 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3790 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 3791 networkRequest); 3792 } 3793 } 3794 3795 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 3796 int notificationType) { 3797 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE) { 3798 Intent intent = new Intent(); 3799 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 3800 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 3801 sendIntent(nri.mPendingIntent, intent); 3802 } 3803 // else not handled 3804 } 3805 3806 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 3807 mPendingIntentWakeLock.acquire(); 3808 try { 3809 if (DBG) log("Sending " + pendingIntent); 3810 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 3811 } catch (PendingIntent.CanceledException e) { 3812 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 3813 mPendingIntentWakeLock.release(); 3814 releasePendingNetworkRequest(pendingIntent); 3815 } 3816 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 3817 } 3818 3819 @Override 3820 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 3821 String resultData, Bundle resultExtras) { 3822 if (DBG) log("Finished sending " + pendingIntent); 3823 mPendingIntentWakeLock.release(); 3824 releasePendingNetworkRequest(pendingIntent); 3825 } 3826 3827 private void callCallbackForRequest(NetworkRequestInfo nri, 3828 NetworkAgentInfo networkAgent, int notificationType) { 3829 if (nri.messenger == null) return; // Default request has no msgr 3830 Bundle bundle = new Bundle(); 3831 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 3832 new NetworkRequest(nri.request)); 3833 Message msg = Message.obtain(); 3834 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 3835 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 3836 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 3837 } 3838 switch (notificationType) { 3839 case ConnectivityManager.CALLBACK_LOSING: { 3840 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 3841 break; 3842 } 3843 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 3844 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 3845 new NetworkCapabilities(networkAgent.networkCapabilities)); 3846 break; 3847 } 3848 case ConnectivityManager.CALLBACK_IP_CHANGED: { 3849 bundle.putParcelable(LinkProperties.class.getSimpleName(), 3850 new LinkProperties(networkAgent.linkProperties)); 3851 break; 3852 } 3853 } 3854 msg.what = notificationType; 3855 msg.setData(bundle); 3856 try { 3857 if (VDBG) { 3858 log("sending notification " + notifyTypeToName(notificationType) + 3859 " for " + nri.request); 3860 } 3861 nri.messenger.send(msg); 3862 } catch (RemoteException e) { 3863 // may occur naturally in the race of binder death. 3864 loge("RemoteException caught trying to send a callback msg for " + nri.request); 3865 } 3866 } 3867 3868 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 3869 for (int i = 0; i < nai.networkRequests.size(); i++) { 3870 NetworkRequest nr = nai.networkRequests.valueAt(i); 3871 // Ignore listening requests. 3872 if (!isRequest(nr)) continue; 3873 loge("Dead network still had at least " + nr); 3874 break; 3875 } 3876 nai.asyncChannel.disconnect(); 3877 } 3878 3879 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 3880 if (oldNetwork == null) { 3881 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 3882 return; 3883 } 3884 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 3885 teardownUnneededNetwork(oldNetwork); 3886 } 3887 3888 private void makeDefault(NetworkAgentInfo newNetwork) { 3889 if (DBG) log("Switching to new default network: " + newNetwork); 3890 setupDataActivityTracking(newNetwork); 3891 try { 3892 mNetd.setDefaultNetId(newNetwork.network.netId); 3893 } catch (Exception e) { 3894 loge("Exception setting default network :" + e); 3895 } 3896 notifyLockdownVpn(newNetwork); 3897 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 3898 updateTcpBufferSizes(newNetwork); 3899 } 3900 3901 // Handles a network appearing or improving its score. 3902 // 3903 // - Evaluates all current NetworkRequests that can be 3904 // satisfied by newNetwork, and reassigns to newNetwork 3905 // any such requests for which newNetwork is the best. 3906 // 3907 // - Lingers any validated Networks that as a result are no longer 3908 // needed. A network is needed if it is the best network for 3909 // one or more NetworkRequests, or if it is a VPN. 3910 // 3911 // - Tears down newNetwork if it just became validated 3912 // (i.e. nascent==JUST_VALIDATED) but turns out to be unneeded. 3913 // 3914 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 3915 // networks that have no chance (i.e. even if validated) 3916 // of becoming the highest scoring network. 3917 // 3918 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 3919 // it does not remove NetworkRequests that other Networks could better satisfy. 3920 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 3921 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 3922 // as it performs better by a factor of the number of Networks. 3923 // 3924 // @param newNetwork is the network to be matched against NetworkRequests. 3925 // @param nascent indicates if newNetwork just became validated, in which case it should be 3926 // torn down if unneeded. 3927 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 3928 // performed to tear down unvalidated networks that have no chance (i.e. even if 3929 // validated) of becoming the highest scoring network. 3930 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, NascentState nascent, 3931 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 3932 if (!newNetwork.created) return; 3933 if (nascent == NascentState.JUST_VALIDATED && !newNetwork.validated) { 3934 loge("ERROR: nascent network not validated."); 3935 } 3936 boolean keep = newNetwork.isVPN(); 3937 boolean isNewDefault = false; 3938 if (DBG) log("rematching " + newNetwork.name()); 3939 // Find and migrate to this Network any NetworkRequests for 3940 // which this network is now the best. 3941 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 3942 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 3943 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3944 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 3945 if (newNetwork == currentNetwork) { 3946 if (DBG) { 3947 log("Network " + newNetwork.name() + " was already satisfying" + 3948 " request " + nri.request.requestId + ". No change."); 3949 } 3950 keep = true; 3951 continue; 3952 } 3953 3954 // check if it satisfies the NetworkCapabilities 3955 if (VDBG) log(" checking if request is satisfied: " + nri.request); 3956 if (newNetwork.satisfies(nri.request)) { 3957 if (!nri.isRequest) { 3958 // This is not a request, it's a callback listener. 3959 // Add it to newNetwork regardless of score. 3960 newNetwork.addRequest(nri.request); 3961 continue; 3962 } 3963 3964 // next check if it's better than any current network we're using for 3965 // this request 3966 if (VDBG) { 3967 log("currentScore = " + 3968 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 3969 ", newScore = " + newNetwork.getCurrentScore()); 3970 } 3971 if (currentNetwork == null || 3972 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 3973 if (currentNetwork != null) { 3974 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 3975 currentNetwork.networkRequests.remove(nri.request.requestId); 3976 currentNetwork.networkLingered.add(nri.request); 3977 affectedNetworks.add(currentNetwork); 3978 } else { 3979 if (DBG) log(" accepting network in place of null"); 3980 } 3981 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 3982 newNetwork.addRequest(nri.request); 3983 if (nri.isRequest && nri.request.legacyType != TYPE_NONE) { 3984 mLegacyTypeTracker.add(nri.request.legacyType, newNetwork); 3985 } 3986 keep = true; 3987 // Tell NetworkFactories about the new score, so they can stop 3988 // trying to connect if they know they cannot match it. 3989 // TODO - this could get expensive if we have alot of requests for this 3990 // network. Think about if there is a way to reduce this. Push 3991 // netid->request mapping to each factory? 3992 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 3993 if (mDefaultRequest.requestId == nri.request.requestId) { 3994 isNewDefault = true; 3995 // TODO: Remove following line. It's redundant with makeDefault call. 3996 if (newNetwork.linkProperties != null) { 3997 updateTcpBufferSizes(newNetwork); 3998 setDefaultDnsSystemProperties( 3999 newNetwork.linkProperties.getDnsServers()); 4000 } else { 4001 setDefaultDnsSystemProperties(new ArrayList<InetAddress>()); 4002 } 4003 // Maintain the illusion: since the legacy API only 4004 // understands one network at a time, we must pretend 4005 // that the current default network disconnected before 4006 // the new one connected. 4007 if (currentNetwork != null) { 4008 mLegacyTypeTracker.remove(currentNetwork.networkInfo.getType(), 4009 currentNetwork); 4010 } 4011 mDefaultInetConditionPublished = newNetwork.validated ? 100 : 0; 4012 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4013 notifyLockdownVpn(newNetwork); 4014 } 4015 } 4016 } 4017 } 4018 // Linger any networks that are no longer needed. 4019 for (NetworkAgentInfo nai : affectedNetworks) { 4020 boolean teardown = !nai.isVPN() && nai.validated; 4021 for (int i = 0; i < nai.networkRequests.size() && teardown; i++) { 4022 NetworkRequest nr = nai.networkRequests.valueAt(i); 4023 try { 4024 if (isRequest(nr)) { 4025 teardown = false; 4026 } 4027 } catch (Exception e) { 4028 loge("Request " + nr + " not found in mNetworkRequests."); 4029 loge(" it came from request list of " + nai.name()); 4030 } 4031 } 4032 if (teardown) { 4033 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4034 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4035 } else { 4036 unlinger(nai); 4037 } 4038 } 4039 if (keep) { 4040 if (isNewDefault) { 4041 // Notify system services that this network is up. 4042 makeDefault(newNetwork); 4043 synchronized (ConnectivityService.this) { 4044 // have a new default network, release the transition wakelock in 4045 // a second if it's held. The second pause is to allow apps 4046 // to reconnect over the new network 4047 if (mNetTransitionWakeLock.isHeld()) { 4048 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4049 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4050 mNetTransitionWakeLockSerialNumber, 0), 4051 1000); 4052 } 4053 } 4054 } 4055 4056 // Notify battery stats service about this network, both the normal 4057 // interface and any stacked links. 4058 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4059 try { 4060 final IBatteryStats bs = BatteryStatsService.getService(); 4061 final int type = newNetwork.networkInfo.getType(); 4062 4063 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4064 bs.noteNetworkInterfaceType(baseIface, type); 4065 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4066 final String stackedIface = stacked.getInterfaceName(); 4067 bs.noteNetworkInterfaceType(stackedIface, type); 4068 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4069 } 4070 } catch (RemoteException ignored) { 4071 } 4072 4073 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4074 4075 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4076 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4077 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4078 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4079 if (newNetwork.isVPN()) { 4080 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4081 } 4082 } else if (nascent == NascentState.JUST_VALIDATED) { 4083 // Only tear down newly validated networks here. Leave unvalidated to either become 4084 // validated (and get evaluated against peers, one losing here), or get reaped (see 4085 // reapUnvalidatedNetworks) if they have no chance of becoming the highest scoring 4086 // network. Networks that have been up for a while and are validated should be torn 4087 // down via the lingering process so communication on that network is given time to 4088 // wrap up. 4089 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4090 teardownUnneededNetwork(newNetwork); 4091 } 4092 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4093 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4094 if (!nai.created || nai.validated || nai.isVPN()) continue; 4095 boolean reap = true; 4096 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4097 // If this Network is already the highest scoring Network for a request, or if 4098 // there is hope for it to become one if it validated, then don't reap it. 4099 if (nri.isRequest && nai.satisfies(nri.request) && 4100 (nai.networkRequests.get(nri.request.requestId) != null || 4101 // Note that this catches two important cases: 4102 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 4103 // is currently satisfying the request. This is desirable when 4104 // cellular ends up validating but WiFi does not. 4105 // 2. Unvalidated WiFi will not be reaped when validated cellular 4106 // is currently satsifying the request. This is desirable when 4107 // WiFi ends up validating and out scoring cellular. 4108 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 4109 nai.getCurrentScoreAsValidated())) { 4110 reap = false; 4111 break; 4112 } 4113 } 4114 if (reap) { 4115 if (DBG) log("Reaping " + nai.name()); 4116 teardownUnneededNetwork(nai); 4117 } 4118 } 4119 } 4120 } 4121 4122 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4123 // being disconnected. 4124 // If only one Network's score or capabilities have been modified since the last time 4125 // this function was called, pass this Network in via the "changed" arugment, otherwise 4126 // pass null. 4127 // If only one Network has been changed but its NetworkCapabilities have not changed, 4128 // pass in the Network's score (from getCurrentScore()) prior to the change via 4129 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4130 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4131 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4132 // to avoid the slowness. It is not simply enough to process just "changed", for 4133 // example in the case where "changed"'s score decreases and another network should begin 4134 // satifying a NetworkRequest that "changed" currently satisfies. 4135 4136 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4137 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4138 // rematchNetworkAndRequests() handles. 4139 if (changed != null && oldScore < changed.getCurrentScore()) { 4140 rematchNetworkAndRequests(changed, NascentState.NOT_JUST_VALIDATED, 4141 ReapUnvalidatedNetworks.REAP); 4142 } else { 4143 for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) { 4144 rematchNetworkAndRequests((NetworkAgentInfo)i.next(), 4145 NascentState.NOT_JUST_VALIDATED, 4146 // Only reap the last time through the loop. Reaping before all rematching 4147 // is complete could incorrectly teardown a network that hasn't yet been 4148 // rematched. 4149 i.hasNext() ? ReapUnvalidatedNetworks.DONT_REAP 4150 : ReapUnvalidatedNetworks.REAP); 4151 } 4152 } 4153 } 4154 4155 private void updateInetCondition(NetworkAgentInfo nai, boolean valid) { 4156 // Don't bother updating until we've graduated to validated at least once. 4157 if (!nai.validated) return; 4158 // For now only update icons for default connection. 4159 // TODO: Update WiFi and cellular icons separately. b/17237507 4160 if (!isDefaultNetwork(nai)) return; 4161 4162 int newInetCondition = valid ? 100 : 0; 4163 // Don't repeat publish. 4164 if (newInetCondition == mDefaultInetConditionPublished) return; 4165 4166 mDefaultInetConditionPublished = newInetCondition; 4167 sendInetConditionBroadcast(nai.networkInfo); 4168 } 4169 4170 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4171 if (mLockdownTracker != null) { 4172 if (nai != null && nai.isVPN()) { 4173 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4174 } else { 4175 mLockdownTracker.onNetworkInfoChanged(); 4176 } 4177 } 4178 } 4179 4180 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4181 NetworkInfo.State state = newInfo.getState(); 4182 NetworkInfo oldInfo = null; 4183 synchronized (networkAgent) { 4184 oldInfo = networkAgent.networkInfo; 4185 networkAgent.networkInfo = newInfo; 4186 } 4187 notifyLockdownVpn(networkAgent); 4188 4189 if (oldInfo != null && oldInfo.getState() == state) { 4190 if (VDBG) log("ignoring duplicate network state non-change"); 4191 return; 4192 } 4193 if (DBG) { 4194 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4195 (oldInfo == null ? "null" : oldInfo.getState()) + 4196 " to " + state); 4197 } 4198 4199 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4200 try { 4201 // This should never fail. Specifying an already in use NetID will cause failure. 4202 if (networkAgent.isVPN()) { 4203 mNetd.createVirtualNetwork(networkAgent.network.netId, 4204 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4205 (networkAgent.networkMisc == null || 4206 !networkAgent.networkMisc.allowBypass)); 4207 } else { 4208 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4209 } 4210 } catch (Exception e) { 4211 loge("Error creating network " + networkAgent.network.netId + ": " 4212 + e.getMessage()); 4213 return; 4214 } 4215 networkAgent.created = true; 4216 updateLinkProperties(networkAgent, null); 4217 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4218 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4219 if (networkAgent.isVPN()) { 4220 // Temporarily disable the default proxy (not global). 4221 synchronized (mProxyLock) { 4222 if (!mDefaultProxyDisabled) { 4223 mDefaultProxyDisabled = true; 4224 if (mGlobalProxy == null && mDefaultProxy != null) { 4225 sendProxyBroadcast(null); 4226 } 4227 } 4228 } 4229 // TODO: support proxy per network. 4230 } 4231 // Consider network even though it is not yet validated. 4232 rematchNetworkAndRequests(networkAgent, NascentState.NOT_JUST_VALIDATED, 4233 ReapUnvalidatedNetworks.REAP); 4234 } else if (state == NetworkInfo.State.DISCONNECTED || 4235 state == NetworkInfo.State.SUSPENDED) { 4236 networkAgent.asyncChannel.disconnect(); 4237 if (networkAgent.isVPN()) { 4238 synchronized (mProxyLock) { 4239 if (mDefaultProxyDisabled) { 4240 mDefaultProxyDisabled = false; 4241 if (mGlobalProxy == null && mDefaultProxy != null) { 4242 sendProxyBroadcast(mDefaultProxy); 4243 } 4244 } 4245 } 4246 } 4247 } 4248 } 4249 4250 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4251 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4252 if (score < 0) { 4253 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4254 "). Bumping score to min of 0"); 4255 score = 0; 4256 } 4257 4258 final int oldScore = nai.getCurrentScore(); 4259 nai.setCurrentScore(score); 4260 4261 rematchAllNetworksAndRequests(nai, oldScore); 4262 4263 sendUpdatedScoreToFactories(nai); 4264 } 4265 4266 // notify only this one new request of the current state 4267 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4268 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4269 // TODO - read state from monitor to decide what to send. 4270// if (nai.networkMonitor.isLingering()) { 4271// notifyType = NetworkCallbacks.LOSING; 4272// } else if (nai.networkMonitor.isEvaluating()) { 4273// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4274// } 4275 if (nri.mPendingIntent == null) { 4276 callCallbackForRequest(nri, nai, notifyType); 4277 } else { 4278 sendPendingIntentForRequest(nri, nai, notifyType); 4279 } 4280 } 4281 4282 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4283 // The NetworkInfo we actually send out has no bearing on the real 4284 // state of affairs. For example, if the default connection is mobile, 4285 // and a request for HIPRI has just gone away, we need to pretend that 4286 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4287 // the state to DISCONNECTED, even though the network is of type MOBILE 4288 // and is still connected. 4289 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4290 info.setType(type); 4291 if (connected) { 4292 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4293 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 4294 } else { 4295 info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo()); 4296 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4297 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4298 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4299 if (info.isFailover()) { 4300 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4301 nai.networkInfo.setFailover(false); 4302 } 4303 if (info.getReason() != null) { 4304 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4305 } 4306 if (info.getExtraInfo() != null) { 4307 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4308 } 4309 NetworkAgentInfo newDefaultAgent = null; 4310 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4311 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4312 if (newDefaultAgent != null) { 4313 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4314 newDefaultAgent.networkInfo); 4315 } else { 4316 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4317 } 4318 } 4319 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4320 mDefaultInetConditionPublished); 4321 final Intent immediateIntent = new Intent(intent); 4322 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 4323 sendStickyBroadcast(immediateIntent); 4324 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 4325 if (newDefaultAgent != null) { 4326 sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo, 4327 getConnectivityChangeDelay()); 4328 } 4329 } 4330 } 4331 4332 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4333 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4334 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4335 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4336 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4337 if (VDBG) log(" sending notification for " + nr); 4338 if (nri.mPendingIntent == null) { 4339 callCallbackForRequest(nri, networkAgent, notifyType); 4340 } else { 4341 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4342 } 4343 } 4344 } 4345 4346 private String notifyTypeToName(int notifyType) { 4347 switch (notifyType) { 4348 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4349 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4350 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4351 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4352 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4353 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4354 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4355 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4356 } 4357 return "UNKNOWN"; 4358 } 4359 4360 @Override 4361 public boolean addVpnAddress(String address, int prefixLength) { 4362 throwIfLockdownEnabled(); 4363 int user = UserHandle.getUserId(Binder.getCallingUid()); 4364 synchronized (mVpns) { 4365 return mVpns.get(user).addAddress(address, prefixLength); 4366 } 4367 } 4368 4369 @Override 4370 public boolean removeVpnAddress(String address, int prefixLength) { 4371 throwIfLockdownEnabled(); 4372 int user = UserHandle.getUserId(Binder.getCallingUid()); 4373 synchronized (mVpns) { 4374 return mVpns.get(user).removeAddress(address, prefixLength); 4375 } 4376 } 4377 4378 @Override 4379 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4380 throwIfLockdownEnabled(); 4381 int user = UserHandle.getUserId(Binder.getCallingUid()); 4382 synchronized (mVpns) { 4383 return mVpns.get(user).setUnderlyingNetworks(networks); 4384 } 4385 } 4386} 4387