ConnectivityService.java revision 1e01d16982e6b22ec4c0e2d6dc1e261eb6f92c8e
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.List; 174import java.util.Map; 175import java.util.Objects; 176import java.util.Random; 177import java.util.concurrent.atomic.AtomicBoolean; 178import java.util.concurrent.atomic.AtomicInteger; 179 180import javax.net.ssl.HostnameVerifier; 181import javax.net.ssl.HttpsURLConnection; 182import javax.net.ssl.SSLSession; 183 184/** 185 * @hide 186 */ 187public class ConnectivityService extends IConnectivityManager.Stub 188 implements PendingIntent.OnFinished { 189 private static final String TAG = "ConnectivityService"; 190 191 private static final boolean DBG = true; 192 private static final boolean VDBG = false; 193 194 // network sampling debugging 195 private static final boolean SAMPLE_DBG = false; 196 197 private static final boolean LOGD_RULES = false; 198 199 // TODO: create better separation between radio types and network types 200 201 // how long to wait before switching back to a radio's default network 202 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 203 // system property that can override the above value 204 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 205 "android.telephony.apn-restore"; 206 207 // Default value if FAIL_FAST_TIME_MS is not set 208 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 209 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 210 private static final String FAIL_FAST_TIME_MS = 211 "persist.radio.fail_fast_time_ms"; 212 213 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 214 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 215 216 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 217 218 private PendingIntent mSampleIntervalElapsedIntent; 219 220 // Set network sampling interval at 12 minutes, this way, even if the timers get 221 // aggregated, it will fire at around 15 minutes, which should allow us to 222 // aggregate this timer with other timers (specially the socket keep alive timers) 223 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 12 * 60); 224 225 // start network sampling a minute after booting ... 226 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 60); 227 228 AlarmManager mAlarmManager; 229 230 private Tethering mTethering; 231 232 private final PermissionMonitor mPermissionMonitor; 233 234 private KeyStore mKeyStore; 235 236 @GuardedBy("mVpns") 237 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 238 239 private boolean mLockdownEnabled; 240 private LockdownVpnTracker mLockdownTracker; 241 242 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 243 private Object mRulesLock = new Object(); 244 /** Currently active network rules by UID. */ 245 private SparseIntArray mUidRules = new SparseIntArray(); 246 /** Set of ifaces that are costly. */ 247 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 248 249 /** 250 * Sometimes we want to refer to the individual network state 251 * trackers separately, and sometimes we just want to treat them 252 * abstractly. 253 */ 254 private NetworkStateTracker mNetTrackers[]; 255 256 private Context mContext; 257 private int mNetworkPreference; 258 // 0 is full bad, 100 is full good 259 private int mDefaultInetConditionPublished = 0; 260 261 private Object mDnsLock = new Object(); 262 private int mNumDnsEntries; 263 264 private boolean mTestMode; 265 private static ConnectivityService sServiceInstance; 266 267 private INetworkManagementService mNetd; 268 private INetworkPolicyManager mPolicyManager; 269 270 private String mCurrentTcpBufferSizes; 271 272 private static final int ENABLED = 1; 273 private static final int DISABLED = 0; 274 275 /** 276 * used internally to change our mobile data enabled flag 277 */ 278 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 279 280 /** 281 * used internally to clear a wakelock when transitioning 282 * from one net to another. Clear happens when we get a new 283 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 284 * after a timeout if no network is found (typically 1 min). 285 */ 286 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 287 288 /** 289 * used internally to reload global proxy settings 290 */ 291 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 292 293 /** 294 * used internally to set external dependency met/unmet 295 * arg1 = ENABLED (met) or DISABLED (unmet) 296 * arg2 = NetworkType 297 */ 298 private static final int EVENT_SET_DEPENDENCY_MET = 10; 299 300 /** 301 * used internally to send a sticky broadcast delayed. 302 */ 303 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 304 305 /** 306 * Used internally to 307 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 308 */ 309 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 310 311 /** 312 * Used internally to disable fail fast of mobile data 313 */ 314 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 315 316 /** 317 * used internally to indicate that data sampling interval is up 318 */ 319 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 320 321 /** 322 * PAC manager has received new port. 323 */ 324 private static final int EVENT_PROXY_HAS_CHANGED = 16; 325 326 /** 327 * used internally when registering NetworkFactories 328 * obj = NetworkFactoryInfo 329 */ 330 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 331 332 /** 333 * used internally when registering NetworkAgents 334 * obj = Messenger 335 */ 336 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 337 338 /** 339 * used to add a network request 340 * includes a NetworkRequestInfo 341 */ 342 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 343 344 /** 345 * indicates a timeout period is over - check if we had a network yet or not 346 * and if not, call the timeout calback (but leave the request live until they 347 * cancel it. 348 * includes a NetworkRequestInfo 349 */ 350 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 351 352 /** 353 * used to add a network listener - no request 354 * includes a NetworkRequestInfo 355 */ 356 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 357 358 /** 359 * used to remove a network request, either a listener or a real request 360 * arg1 = UID of caller 361 * obj = NetworkRequest 362 */ 363 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 364 365 /** 366 * used internally when registering NetworkFactories 367 * obj = Messenger 368 */ 369 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 370 371 /** 372 * used internally to expire a wakelock when transitioning 373 * from one net to another. Expire happens when we fail to find 374 * a new network (typically after 1 minute) - 375 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 376 * a replacement network. 377 */ 378 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 379 380 /** 381 * Used internally to indicate the system is ready. 382 */ 383 private static final int EVENT_SYSTEM_READY = 25; 384 385 /** 386 * used to add a network request with a pending intent 387 * includes a NetworkRequestInfo 388 */ 389 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 390 391 /** 392 * used to remove a pending intent and its associated network request. 393 * arg1 = UID of caller 394 * obj = PendingIntent 395 */ 396 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 397 398 399 /** Handler used for internal events. */ 400 final private InternalHandler mHandler; 401 /** Handler used for incoming {@link NetworkStateTracker} events. */ 402 final private NetworkStateTrackerHandler mTrackerHandler; 403 404 private boolean mSystemReady; 405 private Intent mInitialBroadcast; 406 407 private PowerManager.WakeLock mNetTransitionWakeLock; 408 private String mNetTransitionWakeLockCausedBy = ""; 409 private int mNetTransitionWakeLockSerialNumber; 410 private int mNetTransitionWakeLockTimeout; 411 private final PowerManager.WakeLock mPendingIntentWakeLock; 412 413 private InetAddress mDefaultDns; 414 415 // used in DBG mode to track inet condition reports 416 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 417 private ArrayList mInetLog; 418 419 // track the current default http proxy - tell the world if we get a new one (real change) 420 private volatile ProxyInfo mDefaultProxy = null; 421 private Object mProxyLock = new Object(); 422 private boolean mDefaultProxyDisabled = false; 423 424 // track the global proxy. 425 private ProxyInfo mGlobalProxy = null; 426 427 private PacManager mPacManager = null; 428 429 private SettingsObserver mSettingsObserver; 430 431 private UserManager mUserManager; 432 433 NetworkConfig[] mNetConfigs; 434 int mNetworksDefined; 435 436 // the set of network types that can only be enabled by system/sig apps 437 List mProtectedNetworks; 438 439 private DataConnectionStats mDataConnectionStats; 440 441 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 442 443 TelephonyManager mTelephonyManager; 444 445 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 446 private final static int MIN_NET_ID = 100; // some reserved marks 447 private final static int MAX_NET_ID = 65535; 448 private int mNextNetId = MIN_NET_ID; 449 450 // sequence number of NetworkRequests 451 private int mNextNetworkRequestId = 1; 452 453 /** 454 * Implements support for the legacy "one network per network type" model. 455 * 456 * We used to have a static array of NetworkStateTrackers, one for each 457 * network type, but that doesn't work any more now that we can have, 458 * for example, more that one wifi network. This class stores all the 459 * NetworkAgentInfo objects that support a given type, but the legacy 460 * API will only see the first one. 461 * 462 * It serves two main purposes: 463 * 464 * 1. Provide information about "the network for a given type" (since this 465 * API only supports one). 466 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 467 * the first network for a given type changes, or if the default network 468 * changes. 469 */ 470 private class LegacyTypeTracker { 471 472 private static final boolean DBG = true; 473 private static final boolean VDBG = false; 474 private static final String TAG = "CSLegacyTypeTracker"; 475 476 /** 477 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 478 * Each list holds references to all NetworkAgentInfos that are used to 479 * satisfy requests for that network type. 480 * 481 * This array is built out at startup such that an unsupported network 482 * doesn't get an ArrayList instance, making this a tristate: 483 * unsupported, supported but not active and active. 484 * 485 * The actual lists are populated when we scan the network types that 486 * are supported on this device. 487 */ 488 private ArrayList<NetworkAgentInfo> mTypeLists[]; 489 490 public LegacyTypeTracker() { 491 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 492 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 493 } 494 495 public void addSupportedType(int type) { 496 if (mTypeLists[type] != null) { 497 throw new IllegalStateException( 498 "legacy list for type " + type + "already initialized"); 499 } 500 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 501 } 502 503 public boolean isTypeSupported(int type) { 504 return isNetworkTypeValid(type) && mTypeLists[type] != null; 505 } 506 507 public NetworkAgentInfo getNetworkForType(int type) { 508 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 509 return mTypeLists[type].get(0); 510 } else { 511 return null; 512 } 513 } 514 515 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 516 if (DBG) { 517 log("Sending " + (connected ? "connected" : "disconnected") + 518 " broadcast for type " + type + " " + nai.name() + 519 " isDefaultNetwork=" + isDefaultNetwork(nai)); 520 } 521 } 522 523 /** Adds the given network to the specified legacy type list. */ 524 public void add(int type, NetworkAgentInfo nai) { 525 if (!isTypeSupported(type)) { 526 return; // Invalid network type. 527 } 528 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 529 530 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 531 if (list.contains(nai)) { 532 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 533 return; 534 } 535 536 list.add(nai); 537 538 // Send a broadcast if this is the first network of its type or if it's the default. 539 if (list.size() == 1 || isDefaultNetwork(nai)) { 540 maybeLogBroadcast(nai, true, type); 541 sendLegacyNetworkBroadcast(nai, true, type); 542 } 543 } 544 545 /** Removes the given network from the specified legacy type list. */ 546 public void remove(int type, NetworkAgentInfo nai) { 547 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 548 if (list == null || list.isEmpty()) { 549 return; 550 } 551 552 boolean wasFirstNetwork = list.get(0).equals(nai); 553 554 if (!list.remove(nai)) { 555 return; 556 } 557 558 if (wasFirstNetwork || isDefaultNetwork(nai)) { 559 maybeLogBroadcast(nai, false, type); 560 sendLegacyNetworkBroadcast(nai, false, type); 561 } 562 563 if (!list.isEmpty() && wasFirstNetwork) { 564 if (DBG) log("Other network available for type " + type + 565 ", sending connected broadcast"); 566 maybeLogBroadcast(list.get(0), false, type); 567 sendLegacyNetworkBroadcast(list.get(0), false, type); 568 } 569 } 570 571 /** Removes the given network from all legacy type lists. */ 572 public void remove(NetworkAgentInfo nai) { 573 if (VDBG) log("Removing agent " + nai); 574 for (int type = 0; type < mTypeLists.length; type++) { 575 remove(type, nai); 576 } 577 } 578 579 private String naiToString(NetworkAgentInfo nai) { 580 String name = (nai != null) ? nai.name() : "null"; 581 String state = (nai.networkInfo != null) ? 582 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 583 "???/???"; 584 return name + " " + state; 585 } 586 587 public void dump(IndentingPrintWriter pw) { 588 for (int type = 0; type < mTypeLists.length; type++) { 589 if (mTypeLists[type] == null) continue; 590 pw.print(type + " "); 591 pw.increaseIndent(); 592 if (mTypeLists[type].size() == 0) pw.println("none"); 593 for (NetworkAgentInfo nai : mTypeLists[type]) { 594 pw.println(naiToString(nai)); 595 } 596 pw.decreaseIndent(); 597 } 598 } 599 600 // This class needs its own log method because it has a different TAG. 601 private void log(String s) { 602 Slog.d(TAG, s); 603 } 604 605 } 606 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 607 608 public ConnectivityService(Context context, INetworkManagementService netManager, 609 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 610 if (DBG) log("ConnectivityService starting up"); 611 612 NetworkCapabilities netCap = new NetworkCapabilities(); 613 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 614 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 615 mDefaultRequest = new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 616 NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(), 617 NetworkRequestInfo.REQUEST); 618 mNetworkRequests.put(mDefaultRequest, nri); 619 620 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 621 handlerThread.start(); 622 mHandler = new InternalHandler(handlerThread.getLooper()); 623 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 624 625 // setup our unique device name 626 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 627 String id = Settings.Secure.getString(context.getContentResolver(), 628 Settings.Secure.ANDROID_ID); 629 if (id != null && id.length() > 0) { 630 String name = new String("android-").concat(id); 631 SystemProperties.set("net.hostname", name); 632 } 633 } 634 635 // read our default dns server ip 636 String dns = Settings.Global.getString(context.getContentResolver(), 637 Settings.Global.DEFAULT_DNS_SERVER); 638 if (dns == null || dns.length() == 0) { 639 dns = context.getResources().getString( 640 com.android.internal.R.string.config_default_dns_server); 641 } 642 try { 643 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 644 } catch (IllegalArgumentException e) { 645 loge("Error setting defaultDns using " + dns); 646 } 647 648 mContext = checkNotNull(context, "missing Context"); 649 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 650 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 651 mKeyStore = KeyStore.getInstance(); 652 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 653 654 try { 655 mPolicyManager.registerListener(mPolicyListener); 656 } catch (RemoteException e) { 657 // ouch, no rules updates means some processes may never get network 658 loge("unable to register INetworkPolicyListener" + e.toString()); 659 } 660 661 final PowerManager powerManager = (PowerManager) context.getSystemService( 662 Context.POWER_SERVICE); 663 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 664 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 665 com.android.internal.R.integer.config_networkTransitionTimeout); 666 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 667 668 mNetTrackers = new NetworkStateTracker[ 669 ConnectivityManager.MAX_NETWORK_TYPE+1]; 670 671 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 672 673 // TODO: What is the "correct" way to do determine if this is a wifi only device? 674 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 675 log("wifiOnly=" + wifiOnly); 676 String[] naStrings = context.getResources().getStringArray( 677 com.android.internal.R.array.networkAttributes); 678 for (String naString : naStrings) { 679 try { 680 NetworkConfig n = new NetworkConfig(naString); 681 if (VDBG) log("naString=" + naString + " config=" + n); 682 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 683 loge("Error in networkAttributes - ignoring attempt to define type " + 684 n.type); 685 continue; 686 } 687 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 688 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 689 n.type); 690 continue; 691 } 692 if (mNetConfigs[n.type] != null) { 693 loge("Error in networkAttributes - ignoring attempt to redefine type " + 694 n.type); 695 continue; 696 } 697 mLegacyTypeTracker.addSupportedType(n.type); 698 699 mNetConfigs[n.type] = n; 700 mNetworksDefined++; 701 } catch(Exception e) { 702 // ignore it - leave the entry null 703 } 704 } 705 706 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 707 if (mNetConfigs[TYPE_VPN] == null) { 708 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 709 // don't need to add TYPE_VPN to mNetConfigs. 710 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 711 mNetworksDefined++; // used only in the log() statement below. 712 } 713 714 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 715 716 mProtectedNetworks = new ArrayList<Integer>(); 717 int[] protectedNetworks = context.getResources().getIntArray( 718 com.android.internal.R.array.config_protectedNetworks); 719 for (int p : protectedNetworks) { 720 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 721 mProtectedNetworks.add(p); 722 } else { 723 if (DBG) loge("Ignoring protectedNetwork " + p); 724 } 725 } 726 727 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 728 && SystemProperties.get("ro.build.type").equals("eng"); 729 730 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 731 732 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 733 734 //set up the listener for user state for creating user VPNs 735 IntentFilter intentFilter = new IntentFilter(); 736 intentFilter.addAction(Intent.ACTION_USER_STARTING); 737 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 738 mContext.registerReceiverAsUser( 739 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 740 741 try { 742 mNetd.registerObserver(mTethering); 743 mNetd.registerObserver(mDataActivityObserver); 744 } catch (RemoteException e) { 745 loge("Error registering observer :" + e); 746 } 747 748 if (DBG) { 749 mInetLog = new ArrayList(); 750 } 751 752 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 753 mSettingsObserver.observe(mContext); 754 755 mDataConnectionStats = new DataConnectionStats(mContext); 756 mDataConnectionStats.startMonitoring(); 757 758 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 759 760 IntentFilter filter = new IntentFilter(); 761 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 762 mContext.registerReceiver( 763 new BroadcastReceiver() { 764 @Override 765 public void onReceive(Context context, Intent intent) { 766 String action = intent.getAction(); 767 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 768 mHandler.sendMessage(mHandler.obtainMessage 769 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 770 } 771 } 772 }, 773 new IntentFilter(filter)); 774 775 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 776 777 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 778 } 779 780 private synchronized int nextNetworkRequestId() { 781 return mNextNetworkRequestId++; 782 } 783 784 private void assignNextNetId(NetworkAgentInfo nai) { 785 synchronized (mNetworkForNetId) { 786 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 787 int netId = mNextNetId; 788 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 789 // Make sure NetID unused. http://b/16815182 790 if (mNetworkForNetId.get(netId) == null) { 791 nai.network = new Network(netId); 792 mNetworkForNetId.put(netId, nai); 793 return; 794 } 795 } 796 } 797 throw new IllegalStateException("No free netIds"); 798 } 799 800 private boolean teardown(NetworkStateTracker netTracker) { 801 if (netTracker.teardown()) { 802 netTracker.setTeardownRequested(true); 803 return true; 804 } else { 805 return false; 806 } 807 } 808 809 private NetworkState getFilteredNetworkState(int networkType, int uid) { 810 NetworkInfo info = null; 811 LinkProperties lp = null; 812 NetworkCapabilities nc = null; 813 Network network = null; 814 815 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 816 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 817 if (nai != null) { 818 synchronized (nai) { 819 info = new NetworkInfo(nai.networkInfo); 820 lp = new LinkProperties(nai.linkProperties); 821 nc = new NetworkCapabilities(nai.networkCapabilities); 822 network = new Network(nai.network); 823 } 824 info.setType(networkType); 825 } else { 826 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 827 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 828 info.setIsAvailable(true); 829 lp = new LinkProperties(); 830 nc = new NetworkCapabilities(); 831 network = null; 832 } 833 info = getFilteredNetworkInfo(info, lp, uid); 834 } 835 836 return new NetworkState(info, lp, nc, network); 837 } 838 839 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 840 if (network == null) { 841 return null; 842 } 843 synchronized (mNetworkForNetId) { 844 return mNetworkForNetId.get(network.netId); 845 } 846 }; 847 848 private NetworkState getUnfilteredActiveNetworkState(int uid) { 849 NetworkInfo info = null; 850 LinkProperties lp = null; 851 NetworkCapabilities nc = null; 852 Network network = null; 853 854 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 855 856 if (!mLockdownEnabled) { 857 int user = UserHandle.getUserId(uid); 858 synchronized (mVpns) { 859 Vpn vpn = mVpns.get(user); 860 if (vpn != null && vpn.appliesToUid(uid)) { 861 // getUnderlyingNetworks() returns: 862 // null => the VPN didn't specify anything, so we use the default. 863 // empty array => the VPN explicitly said "no default network". 864 // non-empty array => the VPN specified one or more default networks; we use the 865 // first one. 866 Network[] networks = vpn.getUnderlyingNetworks(); 867 if (networks != null) { 868 if (networks.length > 0) { 869 nai = getNetworkAgentInfoForNetwork(networks[0]); 870 } else { 871 nai = null; 872 } 873 } 874 } 875 } 876 } 877 878 if (nai != null) { 879 synchronized (nai) { 880 info = new NetworkInfo(nai.networkInfo); 881 lp = new LinkProperties(nai.linkProperties); 882 nc = new NetworkCapabilities(nai.networkCapabilities); 883 network = new Network(nai.network); 884 } 885 } 886 887 return new NetworkState(info, lp, nc, network); 888 } 889 890 /** 891 * Check if UID should be blocked from using the network with the given LinkProperties. 892 */ 893 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 894 final boolean networkCostly; 895 final int uidRules; 896 897 final String iface = (lp == null ? "" : lp.getInterfaceName()); 898 synchronized (mRulesLock) { 899 networkCostly = mMeteredIfaces.contains(iface); 900 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 901 } 902 903 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 904 return true; 905 } 906 907 // no restrictive rules; network is visible 908 return false; 909 } 910 911 /** 912 * Return a filtered {@link NetworkInfo}, potentially marked 913 * {@link DetailedState#BLOCKED} based on 914 * {@link #isNetworkWithLinkPropertiesBlocked}. 915 */ 916 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 917 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 918 // network is blocked; clone and override state 919 info = new NetworkInfo(info); 920 info.setDetailedState(DetailedState.BLOCKED, null, null); 921 if (DBG) log("returning Blocked NetworkInfo"); 922 } 923 if (info != null && mLockdownTracker != null) { 924 info = mLockdownTracker.augmentNetworkInfo(info); 925 if (DBG) log("returning Locked NetworkInfo"); 926 } 927 return info; 928 } 929 930 /** 931 * Return NetworkInfo for the active (i.e., connected) network interface. 932 * It is assumed that at most one network is active at a time. If more 933 * than one is active, it is indeterminate which will be returned. 934 * @return the info for the active network, or {@code null} if none is 935 * active 936 */ 937 @Override 938 public NetworkInfo getActiveNetworkInfo() { 939 enforceAccessPermission(); 940 final int uid = Binder.getCallingUid(); 941 NetworkState state = getUnfilteredActiveNetworkState(uid); 942 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 943 } 944 945 /** 946 * Find the first Provisioning network. 947 * 948 * @return NetworkInfo or null if none. 949 */ 950 private NetworkInfo getProvisioningNetworkInfo() { 951 enforceAccessPermission(); 952 953 // Find the first Provisioning Network 954 NetworkInfo provNi = null; 955 for (NetworkInfo ni : getAllNetworkInfo()) { 956 if (ni.isConnectedToProvisioningNetwork()) { 957 provNi = ni; 958 break; 959 } 960 } 961 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 962 return provNi; 963 } 964 965 /** 966 * Find the first Provisioning network or the ActiveDefaultNetwork 967 * if there is no Provisioning network 968 * 969 * @return NetworkInfo or null if none. 970 */ 971 @Override 972 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 973 enforceAccessPermission(); 974 975 NetworkInfo provNi = getProvisioningNetworkInfo(); 976 if (provNi == null) { 977 provNi = getActiveNetworkInfo(); 978 } 979 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 980 return provNi; 981 } 982 983 public NetworkInfo getActiveNetworkInfoUnfiltered() { 984 enforceAccessPermission(); 985 final int uid = Binder.getCallingUid(); 986 NetworkState state = getUnfilteredActiveNetworkState(uid); 987 return state.networkInfo; 988 } 989 990 @Override 991 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 992 enforceConnectivityInternalPermission(); 993 NetworkState state = getUnfilteredActiveNetworkState(uid); 994 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 995 } 996 997 @Override 998 public NetworkInfo getNetworkInfo(int networkType) { 999 enforceAccessPermission(); 1000 final int uid = Binder.getCallingUid(); 1001 NetworkState state = getFilteredNetworkState(networkType, uid); 1002 return state.networkInfo; 1003 } 1004 1005 @Override 1006 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1007 enforceAccessPermission(); 1008 final int uid = Binder.getCallingUid(); 1009 NetworkInfo info = null; 1010 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1011 if (nai != null) { 1012 synchronized (nai) { 1013 info = new NetworkInfo(nai.networkInfo); 1014 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1015 } 1016 } 1017 return info; 1018 } 1019 1020 @Override 1021 public NetworkInfo[] getAllNetworkInfo() { 1022 enforceAccessPermission(); 1023 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1024 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1025 networkType++) { 1026 NetworkInfo info = getNetworkInfo(networkType); 1027 if (info != null) { 1028 result.add(info); 1029 } 1030 } 1031 return result.toArray(new NetworkInfo[result.size()]); 1032 } 1033 1034 @Override 1035 public Network getNetworkForType(int networkType) { 1036 enforceAccessPermission(); 1037 final int uid = Binder.getCallingUid(); 1038 NetworkState state = getFilteredNetworkState(networkType, uid); 1039 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1040 return state.network; 1041 } 1042 return null; 1043 } 1044 1045 @Override 1046 public Network[] getAllNetworks() { 1047 enforceAccessPermission(); 1048 final ArrayList<Network> result = new ArrayList(); 1049 synchronized (mNetworkForNetId) { 1050 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1051 result.add(new Network(mNetworkForNetId.valueAt(i).network)); 1052 } 1053 } 1054 return result.toArray(new Network[result.size()]); 1055 } 1056 1057 private NetworkCapabilities getNetworkCapabilitiesAndValidation(NetworkAgentInfo nai) { 1058 if (nai != null) { 1059 synchronized (nai) { 1060 if (nai.created) { 1061 NetworkCapabilities nc = new NetworkCapabilities(nai.networkCapabilities); 1062 if (nai.validated) { 1063 nc.addCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED); 1064 } else { 1065 nc.removeCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED); 1066 } 1067 return nc; 1068 } 1069 } 1070 } 1071 return null; 1072 } 1073 1074 @Override 1075 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1076 // The basic principle is: if an app's traffic could possibly go over a 1077 // network, without the app doing anything multinetwork-specific, 1078 // (hence, by "default"), then include that network's capabilities in 1079 // the array. 1080 // 1081 // In the normal case, app traffic only goes over the system's default 1082 // network connection, so that's the only network returned. 1083 // 1084 // With a VPN in force, some app traffic may go into the VPN, and thus 1085 // over whatever underlying networks the VPN specifies, while other app 1086 // traffic may go over the system default network (e.g.: a split-tunnel 1087 // VPN, or an app disallowed by the VPN), so the set of networks 1088 // returned includes the VPN's underlying networks and the system 1089 // default. 1090 enforceAccessPermission(); 1091 1092 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1093 1094 NetworkAgentInfo nai = getDefaultNetwork(); 1095 NetworkCapabilities nc = getNetworkCapabilitiesAndValidation(getDefaultNetwork()); 1096 if (nc != null) { 1097 result.put(nai.network, nc); 1098 } 1099 1100 if (!mLockdownEnabled) { 1101 synchronized (mVpns) { 1102 Vpn vpn = mVpns.get(userId); 1103 if (vpn != null) { 1104 Network[] networks = vpn.getUnderlyingNetworks(); 1105 if (networks != null) { 1106 for (Network network : networks) { 1107 nai = getNetworkAgentInfoForNetwork(network); 1108 nc = getNetworkCapabilitiesAndValidation(nai); 1109 if (nc != null) { 1110 result.put(nai.network, nc); 1111 } 1112 } 1113 } 1114 } 1115 } 1116 } 1117 1118 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1119 out = result.values().toArray(out); 1120 return out; 1121 } 1122 1123 @Override 1124 public boolean isNetworkSupported(int networkType) { 1125 enforceAccessPermission(); 1126 return mLegacyTypeTracker.isTypeSupported(networkType); 1127 } 1128 1129 /** 1130 * Return LinkProperties for the active (i.e., connected) default 1131 * network interface. It is assumed that at most one default network 1132 * is active at a time. If more than one is active, it is indeterminate 1133 * which will be returned. 1134 * @return the ip properties for the active network, or {@code null} if 1135 * none is active 1136 */ 1137 @Override 1138 public LinkProperties getActiveLinkProperties() { 1139 enforceAccessPermission(); 1140 final int uid = Binder.getCallingUid(); 1141 NetworkState state = getUnfilteredActiveNetworkState(uid); 1142 return state.linkProperties; 1143 } 1144 1145 @Override 1146 public LinkProperties getLinkPropertiesForType(int networkType) { 1147 enforceAccessPermission(); 1148 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1149 if (nai != null) { 1150 synchronized (nai) { 1151 return new LinkProperties(nai.linkProperties); 1152 } 1153 } 1154 return null; 1155 } 1156 1157 // TODO - this should be ALL networks 1158 @Override 1159 public LinkProperties getLinkProperties(Network network) { 1160 enforceAccessPermission(); 1161 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1162 if (nai != null) { 1163 synchronized (nai) { 1164 return new LinkProperties(nai.linkProperties); 1165 } 1166 } 1167 return null; 1168 } 1169 1170 @Override 1171 public NetworkCapabilities getNetworkCapabilities(Network network) { 1172 enforceAccessPermission(); 1173 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1174 if (nai != null) { 1175 synchronized (nai) { 1176 return new NetworkCapabilities(nai.networkCapabilities); 1177 } 1178 } 1179 return null; 1180 } 1181 1182 @Override 1183 public NetworkState[] getAllNetworkState() { 1184 enforceAccessPermission(); 1185 final int uid = Binder.getCallingUid(); 1186 final ArrayList<NetworkState> result = Lists.newArrayList(); 1187 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1188 networkType++) { 1189 NetworkState state = getFilteredNetworkState(networkType, uid); 1190 if (state.networkInfo != null) { 1191 result.add(state); 1192 } 1193 } 1194 return result.toArray(new NetworkState[result.size()]); 1195 } 1196 1197 @Override 1198 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1199 enforceAccessPermission(); 1200 final int uid = Binder.getCallingUid(); 1201 final long token = Binder.clearCallingIdentity(); 1202 try { 1203 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1204 if (state.networkInfo != null) { 1205 try { 1206 return mPolicyManager.getNetworkQuotaInfo(state); 1207 } catch (RemoteException e) { 1208 } 1209 } 1210 return null; 1211 } finally { 1212 Binder.restoreCallingIdentity(token); 1213 } 1214 } 1215 1216 @Override 1217 public boolean isActiveNetworkMetered() { 1218 enforceAccessPermission(); 1219 final int uid = Binder.getCallingUid(); 1220 final long token = Binder.clearCallingIdentity(); 1221 try { 1222 return isActiveNetworkMeteredUnchecked(uid); 1223 } finally { 1224 Binder.restoreCallingIdentity(token); 1225 } 1226 } 1227 1228 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1229 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1230 if (state.networkInfo != null) { 1231 try { 1232 return mPolicyManager.isNetworkMetered(state); 1233 } catch (RemoteException e) { 1234 } 1235 } 1236 return false; 1237 } 1238 1239 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1240 @Override 1241 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1242 int deviceType = Integer.parseInt(label); 1243 sendDataActivityBroadcast(deviceType, active, tsNanos); 1244 } 1245 }; 1246 1247 /** 1248 * Ensure that a network route exists to deliver traffic to the specified 1249 * host via the specified network interface. 1250 * @param networkType the type of the network over which traffic to the 1251 * specified host is to be routed 1252 * @param hostAddress the IP address of the host to which the route is 1253 * desired 1254 * @return {@code true} on success, {@code false} on failure 1255 */ 1256 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1257 enforceChangePermission(); 1258 if (mProtectedNetworks.contains(networkType)) { 1259 enforceConnectivityInternalPermission(); 1260 } 1261 1262 InetAddress addr; 1263 try { 1264 addr = InetAddress.getByAddress(hostAddress); 1265 } catch (UnknownHostException e) { 1266 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1267 return false; 1268 } 1269 1270 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1271 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1272 return false; 1273 } 1274 1275 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1276 if (nai == null) { 1277 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1278 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1279 } else { 1280 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1281 } 1282 return false; 1283 } 1284 1285 DetailedState netState; 1286 synchronized (nai) { 1287 netState = nai.networkInfo.getDetailedState(); 1288 } 1289 1290 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1291 if (VDBG) { 1292 log("requestRouteToHostAddress on down network " 1293 + "(" + networkType + ") - dropped" 1294 + " netState=" + netState); 1295 } 1296 return false; 1297 } 1298 1299 final int uid = Binder.getCallingUid(); 1300 final long token = Binder.clearCallingIdentity(); 1301 try { 1302 LinkProperties lp; 1303 int netId; 1304 synchronized (nai) { 1305 lp = nai.linkProperties; 1306 netId = nai.network.netId; 1307 } 1308 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1309 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1310 return ok; 1311 } finally { 1312 Binder.restoreCallingIdentity(token); 1313 } 1314 } 1315 1316 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1317 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1318 if (bestRoute == null) { 1319 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1320 } else { 1321 String iface = bestRoute.getInterface(); 1322 if (bestRoute.getGateway().equals(addr)) { 1323 // if there is no better route, add the implied hostroute for our gateway 1324 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1325 } else { 1326 // if we will connect to this through another route, add a direct route 1327 // to it's gateway 1328 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1329 } 1330 } 1331 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1332 try { 1333 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1334 } catch (Exception e) { 1335 // never crash - catch them all 1336 if (DBG) loge("Exception trying to add a route: " + e); 1337 return false; 1338 } 1339 return true; 1340 } 1341 1342 public void setDataDependency(int networkType, boolean met) { 1343 enforceConnectivityInternalPermission(); 1344 1345 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1346 (met ? ENABLED : DISABLED), networkType)); 1347 } 1348 1349 private void handleSetDependencyMet(int networkType, boolean met) { 1350 if (mNetTrackers[networkType] != null) { 1351 if (DBG) { 1352 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1353 } 1354 mNetTrackers[networkType].setDependencyMet(met); 1355 } 1356 } 1357 1358 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1359 @Override 1360 public void onUidRulesChanged(int uid, int uidRules) { 1361 // caller is NPMS, since we only register with them 1362 if (LOGD_RULES) { 1363 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1364 } 1365 1366 synchronized (mRulesLock) { 1367 // skip update when we've already applied rules 1368 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1369 if (oldRules == uidRules) return; 1370 1371 mUidRules.put(uid, uidRules); 1372 } 1373 1374 // TODO: notify UID when it has requested targeted updates 1375 } 1376 1377 @Override 1378 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1379 // caller is NPMS, since we only register with them 1380 if (LOGD_RULES) { 1381 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1382 } 1383 1384 synchronized (mRulesLock) { 1385 mMeteredIfaces.clear(); 1386 for (String iface : meteredIfaces) { 1387 mMeteredIfaces.add(iface); 1388 } 1389 } 1390 } 1391 1392 @Override 1393 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1394 // caller is NPMS, since we only register with them 1395 if (LOGD_RULES) { 1396 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1397 } 1398 1399 // kick off connectivity change broadcast for active network, since 1400 // global background policy change is radical. 1401 // TODO: Dead code; remove. 1402 // 1403 // final int networkType = mActiveDefaultNetwork; 1404 // if (isNetworkTypeValid(networkType)) { 1405 // final NetworkStateTracker tracker = mNetTrackers[networkType]; 1406 // if (tracker != null) { 1407 // final NetworkInfo info = tracker.getNetworkInfo(); 1408 // if (info != null && info.isConnected()) { 1409 // sendConnectedBroadcast(info); 1410 // } 1411 // } 1412 // } 1413 } 1414 }; 1415 1416 @Override 1417 public void setPolicyDataEnable(int networkType, boolean enabled) { 1418 // only someone like NPMS should only be calling us 1419 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1420 1421 mHandler.sendMessage(mHandler.obtainMessage( 1422 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1423 } 1424 1425 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1426 // TODO - handle this passing to factories 1427// if (isNetworkTypeValid(networkType)) { 1428// final NetworkStateTracker tracker = mNetTrackers[networkType]; 1429// if (tracker != null) { 1430// tracker.setPolicyDataEnable(enabled); 1431// } 1432// } 1433 } 1434 1435 private void enforceInternetPermission() { 1436 mContext.enforceCallingOrSelfPermission( 1437 android.Manifest.permission.INTERNET, 1438 "ConnectivityService"); 1439 } 1440 1441 private void enforceAccessPermission() { 1442 mContext.enforceCallingOrSelfPermission( 1443 android.Manifest.permission.ACCESS_NETWORK_STATE, 1444 "ConnectivityService"); 1445 } 1446 1447 private void enforceChangePermission() { 1448 mContext.enforceCallingOrSelfPermission( 1449 android.Manifest.permission.CHANGE_NETWORK_STATE, 1450 "ConnectivityService"); 1451 } 1452 1453 private void enforceTetherAccessPermission() { 1454 mContext.enforceCallingOrSelfPermission( 1455 android.Manifest.permission.ACCESS_NETWORK_STATE, 1456 "ConnectivityService"); 1457 } 1458 1459 private void enforceConnectivityInternalPermission() { 1460 mContext.enforceCallingOrSelfPermission( 1461 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1462 "ConnectivityService"); 1463 } 1464 1465 public void sendConnectedBroadcast(NetworkInfo info) { 1466 enforceConnectivityInternalPermission(); 1467 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1468 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1469 } 1470 1471 private void sendInetConditionBroadcast(NetworkInfo info) { 1472 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1473 } 1474 1475 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1476 if (mLockdownTracker != null) { 1477 info = mLockdownTracker.augmentNetworkInfo(info); 1478 } 1479 1480 Intent intent = new Intent(bcastType); 1481 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1482 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1483 if (info.isFailover()) { 1484 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1485 info.setFailover(false); 1486 } 1487 if (info.getReason() != null) { 1488 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1489 } 1490 if (info.getExtraInfo() != null) { 1491 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1492 info.getExtraInfo()); 1493 } 1494 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1495 return intent; 1496 } 1497 1498 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1499 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1500 } 1501 1502 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1503 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1504 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1505 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1506 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1507 final long ident = Binder.clearCallingIdentity(); 1508 try { 1509 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1510 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1511 } finally { 1512 Binder.restoreCallingIdentity(ident); 1513 } 1514 } 1515 1516 private void sendStickyBroadcast(Intent intent) { 1517 synchronized(this) { 1518 if (!mSystemReady) { 1519 mInitialBroadcast = new Intent(intent); 1520 } 1521 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1522 if (DBG) { 1523 log("sendStickyBroadcast: action=" + intent.getAction()); 1524 } 1525 1526 final long ident = Binder.clearCallingIdentity(); 1527 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1528 final IBatteryStats bs = BatteryStatsService.getService(); 1529 try { 1530 NetworkInfo ni = intent.getParcelableExtra( 1531 ConnectivityManager.EXTRA_NETWORK_INFO); 1532 bs.noteConnectivityChanged(intent.getIntExtra( 1533 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1534 ni != null ? ni.getState().toString() : "?"); 1535 } catch (RemoteException e) { 1536 } 1537 } 1538 try { 1539 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1540 } finally { 1541 Binder.restoreCallingIdentity(ident); 1542 } 1543 } 1544 } 1545 1546 void systemReady() { 1547 // start network sampling .. 1548 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 1549 intent.setPackage(mContext.getPackageName()); 1550 1551 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 1552 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 1553 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 1554 1555 loadGlobalProxy(); 1556 1557 synchronized(this) { 1558 mSystemReady = true; 1559 if (mInitialBroadcast != null) { 1560 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1561 mInitialBroadcast = null; 1562 } 1563 } 1564 // load the global proxy at startup 1565 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1566 1567 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1568 // for user to unlock device. 1569 if (!updateLockdownVpn()) { 1570 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1571 mContext.registerReceiver(mUserPresentReceiver, filter); 1572 } 1573 1574 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1575 1576 mPermissionMonitor.startMonitoring(); 1577 } 1578 1579 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1580 @Override 1581 public void onReceive(Context context, Intent intent) { 1582 // Try creating lockdown tracker, since user present usually means 1583 // unlocked keystore. 1584 if (updateLockdownVpn()) { 1585 mContext.unregisterReceiver(this); 1586 } 1587 } 1588 }; 1589 1590 /** @hide */ 1591 @Override 1592 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1593 enforceConnectivityInternalPermission(); 1594 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1595// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1596 } 1597 1598 /** 1599 * Setup data activity tracking for the given network. 1600 * 1601 * Every {@code setupDataActivityTracking} should be paired with a 1602 * {@link #removeDataActivityTracking} for cleanup. 1603 */ 1604 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1605 final String iface = networkAgent.linkProperties.getInterfaceName(); 1606 1607 final int timeout; 1608 int type = ConnectivityManager.TYPE_NONE; 1609 1610 if (networkAgent.networkCapabilities.hasTransport( 1611 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1612 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1613 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1614 5); 1615 type = ConnectivityManager.TYPE_MOBILE; 1616 } else if (networkAgent.networkCapabilities.hasTransport( 1617 NetworkCapabilities.TRANSPORT_WIFI)) { 1618 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1619 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1620 0); 1621 type = ConnectivityManager.TYPE_WIFI; 1622 } else { 1623 // do not track any other networks 1624 timeout = 0; 1625 } 1626 1627 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1628 try { 1629 mNetd.addIdleTimer(iface, timeout, type); 1630 } catch (Exception e) { 1631 // You shall not crash! 1632 loge("Exception in setupDataActivityTracking " + e); 1633 } 1634 } 1635 } 1636 1637 /** 1638 * Remove data activity tracking when network disconnects. 1639 */ 1640 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1641 final String iface = networkAgent.linkProperties.getInterfaceName(); 1642 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1643 1644 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1645 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1646 try { 1647 // the call fails silently if no idletimer setup for this interface 1648 mNetd.removeIdleTimer(iface); 1649 } catch (Exception e) { 1650 loge("Exception in removeDataActivityTracking " + e); 1651 } 1652 } 1653 } 1654 1655 /** 1656 * Reads the network specific MTU size from reources. 1657 * and set it on it's iface. 1658 */ 1659 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1660 final String iface = newLp.getInterfaceName(); 1661 final int mtu = newLp.getMtu(); 1662 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1663 if (VDBG) log("identical MTU - not setting"); 1664 return; 1665 } 1666 1667 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1668 loge("Unexpected mtu value: " + mtu + ", " + iface); 1669 return; 1670 } 1671 1672 // Cannot set MTU without interface name 1673 if (TextUtils.isEmpty(iface)) { 1674 loge("Setting MTU size with null iface."); 1675 return; 1676 } 1677 1678 try { 1679 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1680 mNetd.setMtu(iface, mtu); 1681 } catch (Exception e) { 1682 Slog.e(TAG, "exception in setMtu()" + e); 1683 } 1684 } 1685 1686 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1687 1688 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1689 if (isDefaultNetwork(nai) == false) { 1690 return; 1691 } 1692 1693 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1694 String[] values = null; 1695 if (tcpBufferSizes != null) { 1696 values = tcpBufferSizes.split(","); 1697 } 1698 1699 if (values == null || values.length != 6) { 1700 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1701 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1702 values = tcpBufferSizes.split(","); 1703 } 1704 1705 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1706 1707 try { 1708 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1709 1710 final String prefix = "/sys/kernel/ipv4/tcp_"; 1711 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1712 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1713 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1714 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1715 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1716 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1717 mCurrentTcpBufferSizes = tcpBufferSizes; 1718 } catch (IOException e) { 1719 loge("Can't set TCP buffer sizes:" + e); 1720 } 1721 1722 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 1723 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 1724 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1725 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 1726 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1727 if (rwndValue != 0) { 1728 SystemProperties.set(sysctlKey, rwndValue.toString()); 1729 } 1730 } 1731 1732 private void flushVmDnsCache() { 1733 /* 1734 * Tell the VMs to toss their DNS caches 1735 */ 1736 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1737 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1738 /* 1739 * Connectivity events can happen before boot has completed ... 1740 */ 1741 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1742 final long ident = Binder.clearCallingIdentity(); 1743 try { 1744 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1745 } finally { 1746 Binder.restoreCallingIdentity(ident); 1747 } 1748 } 1749 1750 @Override 1751 public int getRestoreDefaultNetworkDelay(int networkType) { 1752 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1753 NETWORK_RESTORE_DELAY_PROP_NAME); 1754 if(restoreDefaultNetworkDelayStr != null && 1755 restoreDefaultNetworkDelayStr.length() != 0) { 1756 try { 1757 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1758 } catch (NumberFormatException e) { 1759 } 1760 } 1761 // if the system property isn't set, use the value for the apn type 1762 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1763 1764 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1765 (mNetConfigs[networkType] != null)) { 1766 ret = mNetConfigs[networkType].restoreTime; 1767 } 1768 return ret; 1769 } 1770 1771 @Override 1772 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1773 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1774 if (mContext.checkCallingOrSelfPermission( 1775 android.Manifest.permission.DUMP) 1776 != PackageManager.PERMISSION_GRANTED) { 1777 pw.println("Permission Denial: can't dump ConnectivityService " + 1778 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1779 Binder.getCallingUid()); 1780 return; 1781 } 1782 1783 pw.println("NetworkFactories for:"); 1784 pw.increaseIndent(); 1785 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1786 pw.println(nfi.name); 1787 } 1788 pw.decreaseIndent(); 1789 pw.println(); 1790 1791 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1792 pw.print("Active default network: "); 1793 if (defaultNai == null) { 1794 pw.println("none"); 1795 } else { 1796 pw.println(defaultNai.network.netId); 1797 } 1798 pw.println(); 1799 1800 pw.println("Current Networks:"); 1801 pw.increaseIndent(); 1802 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1803 pw.println(nai.toString()); 1804 pw.increaseIndent(); 1805 pw.println("Requests:"); 1806 pw.increaseIndent(); 1807 for (int i = 0; i < nai.networkRequests.size(); i++) { 1808 pw.println(nai.networkRequests.valueAt(i).toString()); 1809 } 1810 pw.decreaseIndent(); 1811 pw.println("Lingered:"); 1812 pw.increaseIndent(); 1813 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1814 pw.decreaseIndent(); 1815 pw.decreaseIndent(); 1816 } 1817 pw.decreaseIndent(); 1818 pw.println(); 1819 1820 pw.println("Network Requests:"); 1821 pw.increaseIndent(); 1822 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1823 pw.println(nri.toString()); 1824 } 1825 pw.println(); 1826 pw.decreaseIndent(); 1827 1828 pw.println("mLegacyTypeTracker:"); 1829 pw.increaseIndent(); 1830 mLegacyTypeTracker.dump(pw); 1831 pw.decreaseIndent(); 1832 pw.println(); 1833 1834 synchronized (this) { 1835 pw.println("NetworkTransitionWakeLock is currently " + 1836 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 1837 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 1838 } 1839 pw.println(); 1840 1841 mTethering.dump(fd, pw, args); 1842 1843 if (mInetLog != null) { 1844 pw.println(); 1845 pw.println("Inet condition reports:"); 1846 pw.increaseIndent(); 1847 for(int i = 0; i < mInetLog.size(); i++) { 1848 pw.println(mInetLog.get(i)); 1849 } 1850 pw.decreaseIndent(); 1851 } 1852 } 1853 1854 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1855 if (nai.network == null) return false; 1856 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1857 if (officialNai != null && officialNai.equals(nai)) return true; 1858 if (officialNai != null || VDBG) { 1859 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1860 " - " + nai); 1861 } 1862 return false; 1863 } 1864 1865 private boolean isRequest(NetworkRequest request) { 1866 return mNetworkRequests.get(request).isRequest; 1867 } 1868 1869 // must be stateless - things change under us. 1870 private class NetworkStateTrackerHandler extends Handler { 1871 public NetworkStateTrackerHandler(Looper looper) { 1872 super(looper); 1873 } 1874 1875 @Override 1876 public void handleMessage(Message msg) { 1877 NetworkInfo info; 1878 switch (msg.what) { 1879 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1880 handleAsyncChannelHalfConnect(msg); 1881 break; 1882 } 1883 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1884 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1885 if (nai != null) nai.asyncChannel.disconnect(); 1886 break; 1887 } 1888 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1889 handleAsyncChannelDisconnected(msg); 1890 break; 1891 } 1892 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1893 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1894 if (nai == null) { 1895 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1896 } else { 1897 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1898 } 1899 break; 1900 } 1901 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1902 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1903 if (nai == null) { 1904 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1905 } else { 1906 if (VDBG) { 1907 log("Update of LinkProperties for " + nai.name() + 1908 "; created=" + nai.created); 1909 } 1910 LinkProperties oldLp = nai.linkProperties; 1911 synchronized (nai) { 1912 nai.linkProperties = (LinkProperties)msg.obj; 1913 } 1914 if (nai.created) updateLinkProperties(nai, oldLp); 1915 } 1916 break; 1917 } 1918 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1919 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1920 if (nai == null) { 1921 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1922 break; 1923 } 1924 info = (NetworkInfo) msg.obj; 1925 updateNetworkInfo(nai, info); 1926 break; 1927 } 1928 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1929 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1930 if (nai == null) { 1931 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1932 break; 1933 } 1934 Integer score = (Integer) msg.obj; 1935 if (score != null) updateNetworkScore(nai, score.intValue()); 1936 break; 1937 } 1938 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1939 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1940 if (nai == null) { 1941 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1942 break; 1943 } 1944 try { 1945 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1946 } catch (Exception e) { 1947 // Never crash! 1948 loge("Exception in addVpnUidRanges: " + e); 1949 } 1950 break; 1951 } 1952 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1953 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1954 if (nai == null) { 1955 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1956 break; 1957 } 1958 try { 1959 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1960 } catch (Exception e) { 1961 // Never crash! 1962 loge("Exception in removeVpnUidRanges: " + e); 1963 } 1964 break; 1965 } 1966 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1967 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1968 if (nai == null) { 1969 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1970 break; 1971 } 1972 if (nai.created && !nai.networkMisc.explicitlySelected) { 1973 loge("ERROR: created network explicitly selected."); 1974 } 1975 nai.networkMisc.explicitlySelected = true; 1976 break; 1977 } 1978 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1979 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1980 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_VALIDATED")) { 1981 boolean valid = (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1982 if (valid) { 1983 if (DBG) log("Validated " + nai.name()); 1984 final boolean previouslyValidated = nai.validated; 1985 final int previousScore = nai.getCurrentScore(); 1986 nai.validated = true; 1987 rematchNetworkAndRequests(nai, !previouslyValidated); 1988 // If score has changed, rebroadcast to NetworkFactories. b/17726566 1989 if (nai.getCurrentScore() != previousScore) { 1990 sendUpdatedScoreToFactories(nai); 1991 } 1992 } 1993 updateInetCondition(nai, valid); 1994 // Let the NetworkAgent know the state of its network 1995 nai.asyncChannel.sendMessage( 1996 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 1997 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 1998 0, null); 1999 } 2000 break; 2001 } 2002 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2003 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2004 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 2005 handleLingerComplete(nai); 2006 } 2007 break; 2008 } 2009 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2010 if (msg.arg1 == 0) { 2011 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 2012 } else { 2013 NetworkAgentInfo nai = null; 2014 synchronized (mNetworkForNetId) { 2015 nai = mNetworkForNetId.get(msg.arg2); 2016 } 2017 if (nai == null) { 2018 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2019 break; 2020 } 2021 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 2022 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 2023 } 2024 break; 2025 } 2026 case NetworkStateTracker.EVENT_STATE_CHANGED: { 2027 info = (NetworkInfo) msg.obj; 2028 NetworkInfo.State state = info.getState(); 2029 2030 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 2031 (state == NetworkInfo.State.DISCONNECTED) || 2032 (state == NetworkInfo.State.SUSPENDED)) { 2033 log("ConnectivityChange for " + 2034 info.getTypeName() + ": " + 2035 state + "/" + info.getDetailedState()); 2036 } 2037 2038 EventLogTags.writeConnectivityStateChanged( 2039 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 2040 2041 if (info.isConnectedToProvisioningNetwork()) { 2042 /** 2043 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 2044 * for now its an in between network, its a network that 2045 * is actually a default network but we don't want it to be 2046 * announced as such to keep background applications from 2047 * trying to use it. It turns out that some still try so we 2048 * take the additional step of clearing any default routes 2049 * to the link that may have incorrectly setup by the lower 2050 * levels. 2051 */ 2052 LinkProperties lp = getLinkPropertiesForType(info.getType()); 2053 if (DBG) { 2054 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 2055 } 2056 2057 // Clear any default routes setup by the radio so 2058 // any activity by applications trying to use this 2059 // connection will fail until the provisioning network 2060 // is enabled. 2061 /* 2062 for (RouteInfo r : lp.getRoutes()) { 2063 removeRoute(lp, r, TO_DEFAULT_TABLE, 2064 mNetTrackers[info.getType()].getNetwork().netId); 2065 } 2066 */ 2067 } else if (state == NetworkInfo.State.DISCONNECTED) { 2068 } else if (state == NetworkInfo.State.SUSPENDED) { 2069 } else if (state == NetworkInfo.State.CONNECTED) { 2070 // handleConnect(info); 2071 } 2072 notifyLockdownVpn(null); 2073 break; 2074 } 2075 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 2076 info = (NetworkInfo) msg.obj; 2077 // TODO: Temporary allowing network configuration 2078 // change not resetting sockets. 2079 // @see bug/4455071 2080 /* 2081 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 2082 false); 2083 */ 2084 break; 2085 } 2086 } 2087 } 2088 } 2089 2090 // Cancel any lingering so the linger timeout doesn't teardown a network. 2091 // This should be called when a network begins satisfying a NetworkRequest. 2092 // Note: depending on what state the NetworkMonitor is in (e.g., 2093 // if it's awaiting captive portal login, or if validation failed), this 2094 // may trigger a re-evaluation of the network. 2095 private void unlinger(NetworkAgentInfo nai) { 2096 if (VDBG) log("Canceling linger of " + nai.name()); 2097 nai.networkLingered.clear(); 2098 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2099 } 2100 2101 private void handleAsyncChannelHalfConnect(Message msg) { 2102 AsyncChannel ac = (AsyncChannel) msg.obj; 2103 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2104 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2105 if (VDBG) log("NetworkFactory connected"); 2106 // A network factory has connected. Send it all current NetworkRequests. 2107 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2108 if (nri.isRequest == false) continue; 2109 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2110 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2111 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2112 } 2113 } else { 2114 loge("Error connecting NetworkFactory"); 2115 mNetworkFactoryInfos.remove(msg.obj); 2116 } 2117 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2118 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2119 if (VDBG) log("NetworkAgent connected"); 2120 // A network agent has requested a connection. Establish the connection. 2121 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2122 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2123 } else { 2124 loge("Error connecting NetworkAgent"); 2125 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2126 if (nai != null) { 2127 synchronized (mNetworkForNetId) { 2128 mNetworkForNetId.remove(nai.network.netId); 2129 } 2130 // Just in case. 2131 mLegacyTypeTracker.remove(nai); 2132 } 2133 } 2134 } 2135 } 2136 2137 private void handleAsyncChannelDisconnected(Message msg) { 2138 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2139 if (nai != null) { 2140 if (DBG) { 2141 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2142 } 2143 // A network agent has disconnected. 2144 if (nai.created) { 2145 // Tell netd to clean up the configuration for this network 2146 // (routing rules, DNS, etc). 2147 try { 2148 mNetd.removeNetwork(nai.network.netId); 2149 } catch (Exception e) { 2150 loge("Exception removing network: " + e); 2151 } 2152 } 2153 // TODO - if we move the logic to the network agent (have them disconnect 2154 // because they lost all their requests or because their score isn't good) 2155 // then they would disconnect organically, report their new state and then 2156 // disconnect the channel. 2157 if (nai.networkInfo.isConnected()) { 2158 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2159 null, null); 2160 } 2161 if (isDefaultNetwork(nai)) { 2162 mDefaultInetConditionPublished = 0; 2163 } 2164 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2165 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2166 mNetworkAgentInfos.remove(msg.replyTo); 2167 updateClat(null, nai.linkProperties, nai); 2168 mLegacyTypeTracker.remove(nai); 2169 synchronized (mNetworkForNetId) { 2170 mNetworkForNetId.remove(nai.network.netId); 2171 } 2172 // Since we've lost the network, go through all the requests that 2173 // it was satisfying and see if any other factory can satisfy them. 2174 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2175 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2176 for (int i = 0; i < nai.networkRequests.size(); i++) { 2177 NetworkRequest request = nai.networkRequests.valueAt(i); 2178 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2179 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2180 if (DBG) { 2181 log("Checking for replacement network to handle request " + request ); 2182 } 2183 mNetworkForRequestId.remove(request.requestId); 2184 sendUpdatedScoreToFactories(request, 0); 2185 NetworkAgentInfo alternative = null; 2186 for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) { 2187 if (existing.satisfies(request) && 2188 (alternative == null || 2189 alternative.getCurrentScore() < existing.getCurrentScore())) { 2190 alternative = existing; 2191 } 2192 } 2193 if (alternative != null) { 2194 if (DBG) log(" found replacement in " + alternative.name()); 2195 if (!toActivate.contains(alternative)) { 2196 toActivate.add(alternative); 2197 } 2198 } 2199 } 2200 } 2201 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2202 removeDataActivityTracking(nai); 2203 notifyLockdownVpn(nai); 2204 requestNetworkTransitionWakelock(nai.name()); 2205 } 2206 for (NetworkAgentInfo networkToActivate : toActivate) { 2207 unlinger(networkToActivate); 2208 rematchNetworkAndRequests(networkToActivate, false); 2209 } 2210 } 2211 } 2212 2213 // If this method proves to be too slow then we can maintain a separate 2214 // pendingIntent => NetworkRequestInfo map. 2215 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2216 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2217 Intent intent = pendingIntent.getIntent(); 2218 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2219 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2220 if (existingPendingIntent != null && 2221 existingPendingIntent.getIntent().filterEquals(intent)) { 2222 return entry.getValue(); 2223 } 2224 } 2225 return null; 2226 } 2227 2228 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2229 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2230 2231 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2232 if (existingRequest != null) { // remove the existing request. 2233 if (DBG) log("Replacing " + existingRequest.request + " with " 2234 + nri.request + " because their intents matched."); 2235 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2236 } 2237 handleRegisterNetworkRequest(msg); 2238 } 2239 2240 private void handleRegisterNetworkRequest(Message msg) { 2241 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2242 2243 mNetworkRequests.put(nri.request, nri); 2244 2245 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2246 2247 // Check for the best currently alive network that satisfies this request 2248 NetworkAgentInfo bestNetwork = null; 2249 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2250 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2251 if (network.satisfies(nri.request)) { 2252 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2253 if (!nri.isRequest) { 2254 // Not setting bestNetwork here as a listening NetworkRequest may be 2255 // satisfied by multiple Networks. Instead the request is added to 2256 // each satisfying Network and notified about each. 2257 network.addRequest(nri.request); 2258 notifyNetworkCallback(network, nri); 2259 } else if (bestNetwork == null || 2260 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2261 bestNetwork = network; 2262 } 2263 } 2264 } 2265 if (bestNetwork != null) { 2266 if (DBG) log("using " + bestNetwork.name()); 2267 unlinger(bestNetwork); 2268 bestNetwork.addRequest(nri.request); 2269 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2270 notifyNetworkCallback(bestNetwork, nri); 2271 if (nri.request.legacyType != TYPE_NONE) { 2272 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2273 } 2274 } 2275 2276 if (nri.isRequest) { 2277 if (DBG) log("sending new NetworkRequest to factories"); 2278 final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore(); 2279 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2280 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2281 0, nri.request); 2282 } 2283 } 2284 } 2285 2286 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2287 int callingUid) { 2288 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2289 if (nri != null) { 2290 handleReleaseNetworkRequest(nri.request, callingUid); 2291 } 2292 } 2293 2294 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2295 NetworkRequestInfo nri = mNetworkRequests.get(request); 2296 if (nri != null) { 2297 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2298 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2299 return; 2300 } 2301 if (DBG) log("releasing NetworkRequest " + request); 2302 nri.unlinkDeathRecipient(); 2303 mNetworkRequests.remove(request); 2304 if (nri.isRequest) { 2305 // Find all networks that are satisfying this request and remove the request 2306 // from their request lists. 2307 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2308 if (nai.networkRequests.get(nri.request.requestId) != null) { 2309 nai.networkRequests.remove(nri.request.requestId); 2310 if (DBG) { 2311 log(" Removing from current network " + nai.name() + 2312 ", leaving " + nai.networkRequests.size() + 2313 " requests."); 2314 } 2315 // check if has any requests remaining and if not, 2316 // disconnect (unless it's a VPN). 2317 boolean keep = nai.isVPN(); 2318 for (int i = 0; i < nai.networkRequests.size() && !keep; i++) { 2319 NetworkRequest r = nai.networkRequests.valueAt(i); 2320 if (isRequest(r)) keep = true; 2321 } 2322 if (!keep) { 2323 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2324 nai.asyncChannel.disconnect(); 2325 } 2326 } 2327 } 2328 2329 // Maintain the illusion. When this request arrived, we might have pretended 2330 // that a network connected to serve it, even though the network was already 2331 // connected. Now that this request has gone away, we might have to pretend 2332 // that the network disconnected. LegacyTypeTracker will generate that 2333 // phantom disconnect for this type. 2334 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2335 if (nai != null) { 2336 mNetworkForRequestId.remove(nri.request.requestId); 2337 if (nri.request.legacyType != TYPE_NONE) { 2338 mLegacyTypeTracker.remove(nri.request.legacyType, nai); 2339 } 2340 } 2341 2342 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2343 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2344 nri.request); 2345 } 2346 } else { 2347 // listens don't have a singular affectedNetwork. Check all networks to see 2348 // if this listen request applies and remove it. 2349 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2350 nai.networkRequests.remove(nri.request.requestId); 2351 } 2352 } 2353 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2354 } 2355 } 2356 2357 private class InternalHandler extends Handler { 2358 public InternalHandler(Looper looper) { 2359 super(looper); 2360 } 2361 2362 @Override 2363 public void handleMessage(Message msg) { 2364 switch (msg.what) { 2365 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2366 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2367 String causedBy = null; 2368 synchronized (ConnectivityService.this) { 2369 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2370 mNetTransitionWakeLock.isHeld()) { 2371 mNetTransitionWakeLock.release(); 2372 causedBy = mNetTransitionWakeLockCausedBy; 2373 } else { 2374 break; 2375 } 2376 } 2377 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2378 log("Failed to find a new network - expiring NetTransition Wakelock"); 2379 } else { 2380 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2381 " cleared because we found a replacement network"); 2382 } 2383 break; 2384 } 2385 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2386 handleDeprecatedGlobalHttpProxy(); 2387 break; 2388 } 2389 case EVENT_SET_DEPENDENCY_MET: { 2390 boolean met = (msg.arg1 == ENABLED); 2391 handleSetDependencyMet(msg.arg2, met); 2392 break; 2393 } 2394 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2395 Intent intent = (Intent)msg.obj; 2396 sendStickyBroadcast(intent); 2397 break; 2398 } 2399 case EVENT_SET_POLICY_DATA_ENABLE: { 2400 final int networkType = msg.arg1; 2401 final boolean enabled = msg.arg2 == ENABLED; 2402 handleSetPolicyDataEnable(networkType, enabled); 2403 break; 2404 } 2405 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 2406 int tag = mEnableFailFastMobileDataTag.get(); 2407 if (msg.arg1 == tag) { 2408 MobileDataStateTracker mobileDst = 2409 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 2410 if (mobileDst != null) { 2411 mobileDst.setEnableFailFastMobileData(msg.arg2); 2412 } 2413 } else { 2414 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 2415 + " != tag:" + tag); 2416 } 2417 break; 2418 } 2419 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 2420 handleNetworkSamplingTimeout(); 2421 break; 2422 } 2423 case EVENT_PROXY_HAS_CHANGED: { 2424 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2425 break; 2426 } 2427 case EVENT_REGISTER_NETWORK_FACTORY: { 2428 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2429 break; 2430 } 2431 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2432 handleUnregisterNetworkFactory((Messenger)msg.obj); 2433 break; 2434 } 2435 case EVENT_REGISTER_NETWORK_AGENT: { 2436 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2437 break; 2438 } 2439 case EVENT_REGISTER_NETWORK_REQUEST: 2440 case EVENT_REGISTER_NETWORK_LISTENER: { 2441 handleRegisterNetworkRequest(msg); 2442 break; 2443 } 2444 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: { 2445 handleRegisterNetworkRequestWithIntent(msg); 2446 break; 2447 } 2448 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2449 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2450 break; 2451 } 2452 case EVENT_RELEASE_NETWORK_REQUEST: { 2453 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2454 break; 2455 } 2456 case EVENT_SYSTEM_READY: { 2457 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2458 nai.networkMonitor.systemReady = true; 2459 } 2460 break; 2461 } 2462 } 2463 } 2464 } 2465 2466 // javadoc from interface 2467 public int tether(String iface) { 2468 ConnectivityManager.enforceTetherChangePermission(mContext); 2469 if (isTetheringSupported()) { 2470 return mTethering.tether(iface); 2471 } else { 2472 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2473 } 2474 } 2475 2476 // javadoc from interface 2477 public int untether(String iface) { 2478 ConnectivityManager.enforceTetherChangePermission(mContext); 2479 2480 if (isTetheringSupported()) { 2481 return mTethering.untether(iface); 2482 } else { 2483 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2484 } 2485 } 2486 2487 // javadoc from interface 2488 public int getLastTetherError(String iface) { 2489 enforceTetherAccessPermission(); 2490 2491 if (isTetheringSupported()) { 2492 return mTethering.getLastTetherError(iface); 2493 } else { 2494 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2495 } 2496 } 2497 2498 // TODO - proper iface API for selection by property, inspection, etc 2499 public String[] getTetherableUsbRegexs() { 2500 enforceTetherAccessPermission(); 2501 if (isTetheringSupported()) { 2502 return mTethering.getTetherableUsbRegexs(); 2503 } else { 2504 return new String[0]; 2505 } 2506 } 2507 2508 public String[] getTetherableWifiRegexs() { 2509 enforceTetherAccessPermission(); 2510 if (isTetheringSupported()) { 2511 return mTethering.getTetherableWifiRegexs(); 2512 } else { 2513 return new String[0]; 2514 } 2515 } 2516 2517 public String[] getTetherableBluetoothRegexs() { 2518 enforceTetherAccessPermission(); 2519 if (isTetheringSupported()) { 2520 return mTethering.getTetherableBluetoothRegexs(); 2521 } else { 2522 return new String[0]; 2523 } 2524 } 2525 2526 public int setUsbTethering(boolean enable) { 2527 ConnectivityManager.enforceTetherChangePermission(mContext); 2528 if (isTetheringSupported()) { 2529 return mTethering.setUsbTethering(enable); 2530 } else { 2531 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2532 } 2533 } 2534 2535 // TODO - move iface listing, queries, etc to new module 2536 // javadoc from interface 2537 public String[] getTetherableIfaces() { 2538 enforceTetherAccessPermission(); 2539 return mTethering.getTetherableIfaces(); 2540 } 2541 2542 public String[] getTetheredIfaces() { 2543 enforceTetherAccessPermission(); 2544 return mTethering.getTetheredIfaces(); 2545 } 2546 2547 public String[] getTetheringErroredIfaces() { 2548 enforceTetherAccessPermission(); 2549 return mTethering.getErroredIfaces(); 2550 } 2551 2552 public String[] getTetheredDhcpRanges() { 2553 enforceConnectivityInternalPermission(); 2554 return mTethering.getTetheredDhcpRanges(); 2555 } 2556 2557 // if ro.tether.denied = true we default to no tethering 2558 // gservices could set the secure setting to 1 though to enable it on a build where it 2559 // had previously been turned off. 2560 public boolean isTetheringSupported() { 2561 enforceTetherAccessPermission(); 2562 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2563 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2564 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2565 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2566 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2567 mTethering.getTetherableWifiRegexs().length != 0 || 2568 mTethering.getTetherableBluetoothRegexs().length != 0) && 2569 mTethering.getUpstreamIfaceTypes().length != 0); 2570 } 2571 2572 // Called when we lose the default network and have no replacement yet. 2573 // This will automatically be cleared after X seconds or a new default network 2574 // becomes CONNECTED, whichever happens first. The timer is started by the 2575 // first caller and not restarted by subsequent callers. 2576 private void requestNetworkTransitionWakelock(String forWhom) { 2577 int serialNum = 0; 2578 synchronized (this) { 2579 if (mNetTransitionWakeLock.isHeld()) return; 2580 serialNum = ++mNetTransitionWakeLockSerialNumber; 2581 mNetTransitionWakeLock.acquire(); 2582 mNetTransitionWakeLockCausedBy = forWhom; 2583 } 2584 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2585 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2586 mNetTransitionWakeLockTimeout); 2587 return; 2588 } 2589 2590 // 100 percent is full good, 0 is full bad. 2591 public void reportInetCondition(int networkType, int percentage) { 2592 if (percentage > 50) return; // don't handle good network reports 2593 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2594 if (nai != null) reportBadNetwork(nai.network); 2595 } 2596 2597 public void reportBadNetwork(Network network) { 2598 enforceAccessPermission(); 2599 enforceInternetPermission(); 2600 2601 if (network == null) return; 2602 2603 final int uid = Binder.getCallingUid(); 2604 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2605 if (nai == null) return; 2606 if (DBG) log("reportBadNetwork(" + nai.name() + ") by " + uid); 2607 synchronized (nai) { 2608 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2609 // which isn't meant to work on uncreated networks. 2610 if (!nai.created) return; 2611 2612 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2613 2614 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2615 } 2616 } 2617 2618 public ProxyInfo getProxy() { 2619 // this information is already available as a world read/writable jvm property 2620 // so this API change wouldn't have a benifit. It also breaks the passing 2621 // of proxy info to all the JVMs. 2622 // enforceAccessPermission(); 2623 synchronized (mProxyLock) { 2624 ProxyInfo ret = mGlobalProxy; 2625 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2626 return ret; 2627 } 2628 } 2629 2630 public void setGlobalProxy(ProxyInfo proxyProperties) { 2631 enforceConnectivityInternalPermission(); 2632 2633 synchronized (mProxyLock) { 2634 if (proxyProperties == mGlobalProxy) return; 2635 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2636 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2637 2638 String host = ""; 2639 int port = 0; 2640 String exclList = ""; 2641 String pacFileUrl = ""; 2642 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2643 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2644 if (!proxyProperties.isValid()) { 2645 if (DBG) 2646 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2647 return; 2648 } 2649 mGlobalProxy = new ProxyInfo(proxyProperties); 2650 host = mGlobalProxy.getHost(); 2651 port = mGlobalProxy.getPort(); 2652 exclList = mGlobalProxy.getExclusionListAsString(); 2653 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2654 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2655 } 2656 } else { 2657 mGlobalProxy = null; 2658 } 2659 ContentResolver res = mContext.getContentResolver(); 2660 final long token = Binder.clearCallingIdentity(); 2661 try { 2662 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2663 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2664 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2665 exclList); 2666 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2667 } finally { 2668 Binder.restoreCallingIdentity(token); 2669 } 2670 2671 if (mGlobalProxy == null) { 2672 proxyProperties = mDefaultProxy; 2673 } 2674 sendProxyBroadcast(proxyProperties); 2675 } 2676 } 2677 2678 private void loadGlobalProxy() { 2679 ContentResolver res = mContext.getContentResolver(); 2680 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2681 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2682 String exclList = Settings.Global.getString(res, 2683 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2684 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2685 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2686 ProxyInfo proxyProperties; 2687 if (!TextUtils.isEmpty(pacFileUrl)) { 2688 proxyProperties = new ProxyInfo(pacFileUrl); 2689 } else { 2690 proxyProperties = new ProxyInfo(host, port, exclList); 2691 } 2692 if (!proxyProperties.isValid()) { 2693 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2694 return; 2695 } 2696 2697 synchronized (mProxyLock) { 2698 mGlobalProxy = proxyProperties; 2699 } 2700 } 2701 } 2702 2703 public ProxyInfo getGlobalProxy() { 2704 // this information is already available as a world read/writable jvm property 2705 // so this API change wouldn't have a benifit. It also breaks the passing 2706 // of proxy info to all the JVMs. 2707 // enforceAccessPermission(); 2708 synchronized (mProxyLock) { 2709 return mGlobalProxy; 2710 } 2711 } 2712 2713 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2714 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2715 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2716 proxy = null; 2717 } 2718 synchronized (mProxyLock) { 2719 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2720 if (mDefaultProxy == proxy) return; // catches repeated nulls 2721 if (proxy != null && !proxy.isValid()) { 2722 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2723 return; 2724 } 2725 2726 // This call could be coming from the PacManager, containing the port of the local 2727 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2728 // global (to get the correct local port), and send a broadcast. 2729 // TODO: Switch PacManager to have its own message to send back rather than 2730 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2731 if ((mGlobalProxy != null) && (proxy != null) 2732 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2733 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2734 mGlobalProxy = proxy; 2735 sendProxyBroadcast(mGlobalProxy); 2736 return; 2737 } 2738 mDefaultProxy = proxy; 2739 2740 if (mGlobalProxy != null) return; 2741 if (!mDefaultProxyDisabled) { 2742 sendProxyBroadcast(proxy); 2743 } 2744 } 2745 } 2746 2747 private void handleDeprecatedGlobalHttpProxy() { 2748 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2749 Settings.Global.HTTP_PROXY); 2750 if (!TextUtils.isEmpty(proxy)) { 2751 String data[] = proxy.split(":"); 2752 if (data.length == 0) { 2753 return; 2754 } 2755 2756 String proxyHost = data[0]; 2757 int proxyPort = 8080; 2758 if (data.length > 1) { 2759 try { 2760 proxyPort = Integer.parseInt(data[1]); 2761 } catch (NumberFormatException e) { 2762 return; 2763 } 2764 } 2765 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2766 setGlobalProxy(p); 2767 } 2768 } 2769 2770 private void sendProxyBroadcast(ProxyInfo proxy) { 2771 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2772 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2773 if (DBG) log("sending Proxy Broadcast for " + proxy); 2774 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2775 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2776 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2777 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2778 final long ident = Binder.clearCallingIdentity(); 2779 try { 2780 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2781 } finally { 2782 Binder.restoreCallingIdentity(ident); 2783 } 2784 } 2785 2786 private static class SettingsObserver extends ContentObserver { 2787 private int mWhat; 2788 private Handler mHandler; 2789 SettingsObserver(Handler handler, int what) { 2790 super(handler); 2791 mHandler = handler; 2792 mWhat = what; 2793 } 2794 2795 void observe(Context context) { 2796 ContentResolver resolver = context.getContentResolver(); 2797 resolver.registerContentObserver(Settings.Global.getUriFor( 2798 Settings.Global.HTTP_PROXY), false, this); 2799 } 2800 2801 @Override 2802 public void onChange(boolean selfChange) { 2803 mHandler.obtainMessage(mWhat).sendToTarget(); 2804 } 2805 } 2806 2807 private static void log(String s) { 2808 Slog.d(TAG, s); 2809 } 2810 2811 private static void loge(String s) { 2812 Slog.e(TAG, s); 2813 } 2814 2815 private static <T> T checkNotNull(T value, String message) { 2816 if (value == null) { 2817 throw new NullPointerException(message); 2818 } 2819 return value; 2820 } 2821 2822 /** 2823 * Prepare for a VPN application. 2824 * Permissions are checked in Vpn class. 2825 * @hide 2826 */ 2827 @Override 2828 public boolean prepareVpn(String oldPackage, String newPackage) { 2829 throwIfLockdownEnabled(); 2830 int user = UserHandle.getUserId(Binder.getCallingUid()); 2831 synchronized(mVpns) { 2832 return mVpns.get(user).prepare(oldPackage, newPackage); 2833 } 2834 } 2835 2836 /** 2837 * Set whether the current VPN package has the ability to launch VPNs without 2838 * user intervention. This method is used by system-privileged apps. 2839 * Permissions are checked in Vpn class. 2840 * @hide 2841 */ 2842 @Override 2843 public void setVpnPackageAuthorization(boolean authorized) { 2844 int user = UserHandle.getUserId(Binder.getCallingUid()); 2845 synchronized(mVpns) { 2846 mVpns.get(user).setPackageAuthorization(authorized); 2847 } 2848 } 2849 2850 /** 2851 * Configure a TUN interface and return its file descriptor. Parameters 2852 * are encoded and opaque to this class. This method is used by VpnBuilder 2853 * and not available in ConnectivityManager. Permissions are checked in 2854 * Vpn class. 2855 * @hide 2856 */ 2857 @Override 2858 public ParcelFileDescriptor establishVpn(VpnConfig config) { 2859 throwIfLockdownEnabled(); 2860 int user = UserHandle.getUserId(Binder.getCallingUid()); 2861 synchronized(mVpns) { 2862 return mVpns.get(user).establish(config); 2863 } 2864 } 2865 2866 /** 2867 * Start legacy VPN, controlling native daemons as needed. Creates a 2868 * secondary thread to perform connection work, returning quickly. 2869 */ 2870 @Override 2871 public void startLegacyVpn(VpnProfile profile) { 2872 throwIfLockdownEnabled(); 2873 final LinkProperties egress = getActiveLinkProperties(); 2874 if (egress == null) { 2875 throw new IllegalStateException("Missing active network connection"); 2876 } 2877 int user = UserHandle.getUserId(Binder.getCallingUid()); 2878 synchronized(mVpns) { 2879 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 2880 } 2881 } 2882 2883 /** 2884 * Return the information of the ongoing legacy VPN. This method is used 2885 * by VpnSettings and not available in ConnectivityManager. Permissions 2886 * are checked in Vpn class. 2887 * @hide 2888 */ 2889 @Override 2890 public LegacyVpnInfo getLegacyVpnInfo() { 2891 throwIfLockdownEnabled(); 2892 int user = UserHandle.getUserId(Binder.getCallingUid()); 2893 synchronized(mVpns) { 2894 return mVpns.get(user).getLegacyVpnInfo(); 2895 } 2896 } 2897 2898 /** 2899 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 2900 * not available in ConnectivityManager. 2901 * Permissions are checked in Vpn class. 2902 * @hide 2903 */ 2904 @Override 2905 public VpnConfig getVpnConfig() { 2906 int user = UserHandle.getUserId(Binder.getCallingUid()); 2907 synchronized(mVpns) { 2908 return mVpns.get(user).getVpnConfig(); 2909 } 2910 } 2911 2912 @Override 2913 public boolean updateLockdownVpn() { 2914 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 2915 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 2916 return false; 2917 } 2918 2919 // Tear down existing lockdown if profile was removed 2920 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 2921 if (mLockdownEnabled) { 2922 if (!mKeyStore.isUnlocked()) { 2923 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 2924 return false; 2925 } 2926 2927 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 2928 final VpnProfile profile = VpnProfile.decode( 2929 profileName, mKeyStore.get(Credentials.VPN + profileName)); 2930 int user = UserHandle.getUserId(Binder.getCallingUid()); 2931 synchronized(mVpns) { 2932 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 2933 profile)); 2934 } 2935 } else { 2936 setLockdownTracker(null); 2937 } 2938 2939 return true; 2940 } 2941 2942 /** 2943 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 2944 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 2945 */ 2946 private void setLockdownTracker(LockdownVpnTracker tracker) { 2947 // Shutdown any existing tracker 2948 final LockdownVpnTracker existing = mLockdownTracker; 2949 mLockdownTracker = null; 2950 if (existing != null) { 2951 existing.shutdown(); 2952 } 2953 2954 try { 2955 if (tracker != null) { 2956 mNetd.setFirewallEnabled(true); 2957 mNetd.setFirewallInterfaceRule("lo", true); 2958 mLockdownTracker = tracker; 2959 mLockdownTracker.init(); 2960 } else { 2961 mNetd.setFirewallEnabled(false); 2962 } 2963 } catch (RemoteException e) { 2964 // ignored; NMS lives inside system_server 2965 } 2966 } 2967 2968 private void throwIfLockdownEnabled() { 2969 if (mLockdownEnabled) { 2970 throw new IllegalStateException("Unavailable in lockdown mode"); 2971 } 2972 } 2973 2974 public void supplyMessenger(int networkType, Messenger messenger) { 2975 enforceConnectivityInternalPermission(); 2976 2977 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 2978 mNetTrackers[networkType].supplyMessenger(messenger); 2979 } 2980 } 2981 2982 public int findConnectionTypeForIface(String iface) { 2983 enforceConnectivityInternalPermission(); 2984 2985 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 2986 2987 synchronized(mNetworkForNetId) { 2988 for (int i = 0; i < mNetworkForNetId.size(); i++) { 2989 NetworkAgentInfo nai = mNetworkForNetId.valueAt(i); 2990 LinkProperties lp = nai.linkProperties; 2991 if (lp != null && iface.equals(lp.getInterfaceName()) && nai.networkInfo != null) { 2992 return nai.networkInfo.getType(); 2993 } 2994 } 2995 } 2996 return ConnectivityManager.TYPE_NONE; 2997 } 2998 2999 /** 3000 * Have mobile data fail fast if enabled. 3001 * 3002 * @param enabled DctConstants.ENABLED/DISABLED 3003 */ 3004 private void setEnableFailFastMobileData(int enabled) { 3005 int tag; 3006 3007 if (enabled == DctConstants.ENABLED) { 3008 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 3009 } else { 3010 tag = mEnableFailFastMobileDataTag.get(); 3011 } 3012 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 3013 enabled)); 3014 } 3015 3016 @Override 3017 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3018 // TODO: Remove? Any reason to trigger a provisioning check? 3019 return -1; 3020 } 3021 3022 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3023 private volatile boolean mIsNotificationVisible = false; 3024 3025 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3026 if (DBG) { 3027 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3028 + " action=" + action); 3029 } 3030 Intent intent = new Intent(action); 3031 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3032 // Concatenate the range of types onto the range of NetIDs. 3033 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3034 setProvNotificationVisibleIntent(visible, id, networkType, null, pendingIntent); 3035 } 3036 3037 /** 3038 * Show or hide network provisioning notificaitons. 3039 * 3040 * @param id an identifier that uniquely identifies this notification. This must match 3041 * between show and hide calls. We use the NetID value but for legacy callers 3042 * we concatenate the range of types with the range of NetIDs. 3043 */ 3044 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 3045 String extraInfo, PendingIntent intent) { 3046 if (DBG) { 3047 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 3048 networkType + " extraInfo=" + extraInfo); 3049 } 3050 3051 Resources r = Resources.getSystem(); 3052 NotificationManager notificationManager = (NotificationManager) mContext 3053 .getSystemService(Context.NOTIFICATION_SERVICE); 3054 3055 if (visible) { 3056 CharSequence title; 3057 CharSequence details; 3058 int icon; 3059 Notification notification = new Notification(); 3060 switch (networkType) { 3061 case ConnectivityManager.TYPE_WIFI: 3062 title = r.getString(R.string.wifi_available_sign_in, 0); 3063 details = r.getString(R.string.network_available_sign_in_detailed, 3064 extraInfo); 3065 icon = R.drawable.stat_notify_wifi_in_range; 3066 break; 3067 case ConnectivityManager.TYPE_MOBILE: 3068 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3069 title = r.getString(R.string.network_available_sign_in, 0); 3070 // TODO: Change this to pull from NetworkInfo once a printable 3071 // name has been added to it 3072 details = mTelephonyManager.getNetworkOperatorName(); 3073 icon = R.drawable.stat_notify_rssi_in_range; 3074 break; 3075 default: 3076 title = r.getString(R.string.network_available_sign_in, 0); 3077 details = r.getString(R.string.network_available_sign_in_detailed, 3078 extraInfo); 3079 icon = R.drawable.stat_notify_rssi_in_range; 3080 break; 3081 } 3082 3083 notification.when = 0; 3084 notification.icon = icon; 3085 notification.flags = Notification.FLAG_AUTO_CANCEL; 3086 notification.tickerText = title; 3087 notification.color = mContext.getResources().getColor( 3088 com.android.internal.R.color.system_notification_accent_color); 3089 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3090 notification.contentIntent = intent; 3091 3092 try { 3093 notificationManager.notify(NOTIFICATION_ID, id, notification); 3094 } catch (NullPointerException npe) { 3095 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 3096 npe.printStackTrace(); 3097 } 3098 } else { 3099 try { 3100 notificationManager.cancel(NOTIFICATION_ID, id); 3101 } catch (NullPointerException npe) { 3102 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 3103 npe.printStackTrace(); 3104 } 3105 } 3106 mIsNotificationVisible = visible; 3107 } 3108 3109 /** Location to an updatable file listing carrier provisioning urls. 3110 * An example: 3111 * 3112 * <?xml version="1.0" encoding="utf-8"?> 3113 * <provisioningUrls> 3114 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3115 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3116 * </provisioningUrls> 3117 */ 3118 private static final String PROVISIONING_URL_PATH = 3119 "/data/misc/radio/provisioning_urls.xml"; 3120 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3121 3122 /** XML tag for root element. */ 3123 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3124 /** XML tag for individual url */ 3125 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3126 /** XML tag for redirected url */ 3127 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3128 /** XML attribute for mcc */ 3129 private static final String ATTR_MCC = "mcc"; 3130 /** XML attribute for mnc */ 3131 private static final String ATTR_MNC = "mnc"; 3132 3133 private static final int REDIRECTED_PROVISIONING = 1; 3134 private static final int PROVISIONING = 2; 3135 3136 private String getProvisioningUrlBaseFromFile(int type) { 3137 FileReader fileReader = null; 3138 XmlPullParser parser = null; 3139 Configuration config = mContext.getResources().getConfiguration(); 3140 String tagType; 3141 3142 switch (type) { 3143 case PROVISIONING: 3144 tagType = TAG_PROVISIONING_URL; 3145 break; 3146 case REDIRECTED_PROVISIONING: 3147 tagType = TAG_REDIRECTED_URL; 3148 break; 3149 default: 3150 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3151 type); 3152 } 3153 3154 try { 3155 fileReader = new FileReader(mProvisioningUrlFile); 3156 parser = Xml.newPullParser(); 3157 parser.setInput(fileReader); 3158 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3159 3160 while (true) { 3161 XmlUtils.nextElement(parser); 3162 3163 String element = parser.getName(); 3164 if (element == null) break; 3165 3166 if (element.equals(tagType)) { 3167 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3168 try { 3169 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3170 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3171 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3172 parser.next(); 3173 if (parser.getEventType() == XmlPullParser.TEXT) { 3174 return parser.getText(); 3175 } 3176 } 3177 } 3178 } catch (NumberFormatException e) { 3179 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3180 } 3181 } 3182 } 3183 return null; 3184 } catch (FileNotFoundException e) { 3185 loge("Carrier Provisioning Urls file not found"); 3186 } catch (XmlPullParserException e) { 3187 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3188 } catch (IOException e) { 3189 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3190 } finally { 3191 if (fileReader != null) { 3192 try { 3193 fileReader.close(); 3194 } catch (IOException e) {} 3195 } 3196 } 3197 return null; 3198 } 3199 3200 @Override 3201 public String getMobileRedirectedProvisioningUrl() { 3202 enforceConnectivityInternalPermission(); 3203 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3204 if (TextUtils.isEmpty(url)) { 3205 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3206 } 3207 return url; 3208 } 3209 3210 @Override 3211 public String getMobileProvisioningUrl() { 3212 enforceConnectivityInternalPermission(); 3213 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3214 if (TextUtils.isEmpty(url)) { 3215 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3216 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3217 } else { 3218 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3219 } 3220 // populate the iccid, imei and phone number in the provisioning url. 3221 if (!TextUtils.isEmpty(url)) { 3222 String phoneNumber = mTelephonyManager.getLine1Number(); 3223 if (TextUtils.isEmpty(phoneNumber)) { 3224 phoneNumber = "0000000000"; 3225 } 3226 url = String.format(url, 3227 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3228 mTelephonyManager.getDeviceId() /* IMEI */, 3229 phoneNumber /* Phone numer */); 3230 } 3231 3232 return url; 3233 } 3234 3235 @Override 3236 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3237 String action) { 3238 enforceConnectivityInternalPermission(); 3239 final long ident = Binder.clearCallingIdentity(); 3240 try { 3241 setProvNotificationVisible(visible, networkType, action); 3242 } finally { 3243 Binder.restoreCallingIdentity(ident); 3244 } 3245 } 3246 3247 @Override 3248 public void setAirplaneMode(boolean enable) { 3249 enforceConnectivityInternalPermission(); 3250 final long ident = Binder.clearCallingIdentity(); 3251 try { 3252 final ContentResolver cr = mContext.getContentResolver(); 3253 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3254 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3255 intent.putExtra("state", enable); 3256 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3257 } finally { 3258 Binder.restoreCallingIdentity(ident); 3259 } 3260 } 3261 3262 private void onUserStart(int userId) { 3263 synchronized(mVpns) { 3264 Vpn userVpn = mVpns.get(userId); 3265 if (userVpn != null) { 3266 loge("Starting user already has a VPN"); 3267 return; 3268 } 3269 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, this, userId); 3270 mVpns.put(userId, userVpn); 3271 } 3272 } 3273 3274 private void onUserStop(int userId) { 3275 synchronized(mVpns) { 3276 Vpn userVpn = mVpns.get(userId); 3277 if (userVpn == null) { 3278 loge("Stopping user has no VPN"); 3279 return; 3280 } 3281 mVpns.delete(userId); 3282 } 3283 } 3284 3285 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3286 @Override 3287 public void onReceive(Context context, Intent intent) { 3288 final String action = intent.getAction(); 3289 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3290 if (userId == UserHandle.USER_NULL) return; 3291 3292 if (Intent.ACTION_USER_STARTING.equals(action)) { 3293 onUserStart(userId); 3294 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3295 onUserStop(userId); 3296 } 3297 } 3298 }; 3299 3300 /* Infrastructure for network sampling */ 3301 3302 private void handleNetworkSamplingTimeout() { 3303 3304 if (SAMPLE_DBG) log("Sampling interval elapsed, updating statistics .."); 3305 3306 // initialize list of interfaces .. 3307 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 3308 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 3309 for (NetworkStateTracker tracker : mNetTrackers) { 3310 if (tracker != null) { 3311 String ifaceName = tracker.getNetworkInterfaceName(); 3312 if (ifaceName != null) { 3313 mapIfaceToSample.put(ifaceName, null); 3314 } 3315 } 3316 } 3317 3318 // Read samples for all interfaces 3319 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 3320 3321 // process samples for all networks 3322 for (NetworkStateTracker tracker : mNetTrackers) { 3323 if (tracker != null) { 3324 String ifaceName = tracker.getNetworkInterfaceName(); 3325 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 3326 if (ss != null) { 3327 // end the previous sampling cycle 3328 tracker.stopSampling(ss); 3329 // start a new sampling cycle .. 3330 tracker.startSampling(ss); 3331 } 3332 } 3333 } 3334 3335 if (SAMPLE_DBG) log("Done."); 3336 3337 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 3338 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 3339 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 3340 3341 if (SAMPLE_DBG) { 3342 log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 3343 } 3344 3345 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 3346 } 3347 3348 /** 3349 * Sets a network sampling alarm. 3350 */ 3351 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 3352 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 3353 int alarmType; 3354 if (Resources.getSystem().getBoolean( 3355 R.bool.config_networkSamplingWakesDevice)) { 3356 alarmType = AlarmManager.ELAPSED_REALTIME_WAKEUP; 3357 } else { 3358 alarmType = AlarmManager.ELAPSED_REALTIME; 3359 } 3360 mAlarmManager.set(alarmType, wakeupTime, intent); 3361 } 3362 3363 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3364 new HashMap<Messenger, NetworkFactoryInfo>(); 3365 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3366 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3367 3368 private static class NetworkFactoryInfo { 3369 public final String name; 3370 public final Messenger messenger; 3371 public final AsyncChannel asyncChannel; 3372 3373 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3374 this.name = name; 3375 this.messenger = messenger; 3376 this.asyncChannel = asyncChannel; 3377 } 3378 } 3379 3380 /** 3381 * Tracks info about the requester. 3382 * Also used to notice when the calling process dies so we can self-expire 3383 */ 3384 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3385 static final boolean REQUEST = true; 3386 static final boolean LISTEN = false; 3387 3388 final NetworkRequest request; 3389 final PendingIntent mPendingIntent; 3390 private final IBinder mBinder; 3391 final int mPid; 3392 final int mUid; 3393 final Messenger messenger; 3394 final boolean isRequest; 3395 3396 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3397 request = r; 3398 mPendingIntent = pi; 3399 messenger = null; 3400 mBinder = null; 3401 mPid = getCallingPid(); 3402 mUid = getCallingUid(); 3403 this.isRequest = isRequest; 3404 } 3405 3406 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3407 super(); 3408 messenger = m; 3409 request = r; 3410 mBinder = binder; 3411 mPid = getCallingPid(); 3412 mUid = getCallingUid(); 3413 this.isRequest = isRequest; 3414 mPendingIntent = null; 3415 3416 try { 3417 mBinder.linkToDeath(this, 0); 3418 } catch (RemoteException e) { 3419 binderDied(); 3420 } 3421 } 3422 3423 void unlinkDeathRecipient() { 3424 if (mBinder != null) { 3425 mBinder.unlinkToDeath(this, 0); 3426 } 3427 } 3428 3429 public void binderDied() { 3430 log("ConnectivityService NetworkRequestInfo binderDied(" + 3431 request + ", " + mBinder + ")"); 3432 releaseNetworkRequest(request); 3433 } 3434 3435 public String toString() { 3436 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3437 mPid + " for " + request + 3438 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3439 } 3440 } 3441 3442 @Override 3443 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3444 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3445 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3446 enforceNetworkRequestPermissions(networkCapabilities); 3447 enforceMeteredApnPolicy(networkCapabilities); 3448 3449 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3450 throw new IllegalArgumentException("Bad timeout specified"); 3451 } 3452 3453 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3454 nextNetworkRequestId()); 3455 if (DBG) log("requestNetwork for " + networkRequest); 3456 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3457 NetworkRequestInfo.REQUEST); 3458 3459 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3460 if (timeoutMs > 0) { 3461 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3462 nri), timeoutMs); 3463 } 3464 return networkRequest; 3465 } 3466 3467 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3468 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 3469 == false) { 3470 enforceConnectivityInternalPermission(); 3471 } else { 3472 enforceChangePermission(); 3473 } 3474 } 3475 3476 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3477 // if UID is restricted, don't allow them to bring up metered APNs 3478 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED) 3479 == false) { 3480 final int uidRules; 3481 final int uid = Binder.getCallingUid(); 3482 synchronized(mRulesLock) { 3483 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3484 } 3485 if ((uidRules & RULE_REJECT_METERED) != 0) { 3486 // we could silently fail or we can filter the available nets to only give 3487 // them those they have access to. Chose the more useful 3488 networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED); 3489 } 3490 } 3491 } 3492 3493 @Override 3494 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3495 PendingIntent operation) { 3496 checkNotNull(operation, "PendingIntent cannot be null."); 3497 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3498 enforceNetworkRequestPermissions(networkCapabilities); 3499 enforceMeteredApnPolicy(networkCapabilities); 3500 3501 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3502 nextNetworkRequestId()); 3503 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3504 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3505 NetworkRequestInfo.REQUEST); 3506 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3507 nri)); 3508 return networkRequest; 3509 } 3510 3511 @Override 3512 public void releasePendingNetworkRequest(PendingIntent operation) { 3513 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3514 getCallingUid(), 0, operation)); 3515 } 3516 3517 @Override 3518 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3519 Messenger messenger, IBinder binder) { 3520 enforceAccessPermission(); 3521 3522 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3523 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3524 if (DBG) log("listenForNetwork for " + networkRequest); 3525 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3526 NetworkRequestInfo.LISTEN); 3527 3528 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3529 return networkRequest; 3530 } 3531 3532 @Override 3533 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3534 PendingIntent operation) { 3535 } 3536 3537 @Override 3538 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3539 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3540 0, networkRequest)); 3541 } 3542 3543 @Override 3544 public void registerNetworkFactory(Messenger messenger, String name) { 3545 enforceConnectivityInternalPermission(); 3546 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3547 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3548 } 3549 3550 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3551 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3552 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3553 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3554 } 3555 3556 @Override 3557 public void unregisterNetworkFactory(Messenger messenger) { 3558 enforceConnectivityInternalPermission(); 3559 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3560 } 3561 3562 private void handleUnregisterNetworkFactory(Messenger messenger) { 3563 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3564 if (nfi == null) { 3565 loge("Failed to find Messenger in unregisterNetworkFactory"); 3566 return; 3567 } 3568 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3569 } 3570 3571 /** 3572 * NetworkAgentInfo supporting a request by requestId. 3573 * These have already been vetted (their Capabilities satisfy the request) 3574 * and the are the highest scored network available. 3575 * the are keyed off the Requests requestId. 3576 */ 3577 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3578 new SparseArray<NetworkAgentInfo>(); 3579 3580 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3581 new SparseArray<NetworkAgentInfo>(); 3582 3583 // NetworkAgentInfo keyed off its connecting messenger 3584 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3585 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3586 new HashMap<Messenger, NetworkAgentInfo>(); 3587 3588 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3589 private final NetworkRequest mDefaultRequest; 3590 3591 private NetworkAgentInfo getDefaultNetwork() { 3592 return mNetworkForRequestId.get(mDefaultRequest.requestId); 3593 } 3594 3595 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3596 return nai == getDefaultNetwork(); 3597 } 3598 3599 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3600 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3601 int currentScore, NetworkMisc networkMisc) { 3602 enforceConnectivityInternalPermission(); 3603 3604 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3605 // satisfies mDefaultRequest. 3606 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3607 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 3608 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler, 3609 new NetworkMisc(networkMisc), mDefaultRequest); 3610 synchronized (this) { 3611 nai.networkMonitor.systemReady = mSystemReady; 3612 } 3613 if (DBG) log("registerNetworkAgent " + nai); 3614 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3615 } 3616 3617 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3618 if (VDBG) log("Got NetworkAgent Messenger"); 3619 mNetworkAgentInfos.put(na.messenger, na); 3620 assignNextNetId(na); 3621 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3622 NetworkInfo networkInfo = na.networkInfo; 3623 na.networkInfo = null; 3624 updateNetworkInfo(na, networkInfo); 3625 } 3626 3627 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3628 LinkProperties newLp = networkAgent.linkProperties; 3629 int netId = networkAgent.network.netId; 3630 3631 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3632 // we do anything else, make sure its LinkProperties are accurate. 3633 if (networkAgent.clatd != null) { 3634 networkAgent.clatd.fixupLinkProperties(oldLp); 3635 } 3636 3637 updateInterfaces(newLp, oldLp, netId); 3638 updateMtu(newLp, oldLp); 3639 // TODO - figure out what to do for clat 3640// for (LinkProperties lp : newLp.getStackedLinks()) { 3641// updateMtu(lp, null); 3642// } 3643 updateTcpBufferSizes(networkAgent); 3644 3645 // TODO: deprecate and remove mDefaultDns when we can do so safely. 3646 // For now, use it only when the network has Internet access. http://b/18327075 3647 final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3648 NetworkCapabilities.NET_CAPABILITY_INTERNET); 3649 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3650 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3651 3652 updateClat(newLp, oldLp, networkAgent); 3653 if (isDefaultNetwork(networkAgent)) handleApplyDefaultProxy(newLp.getHttpProxy()); 3654 // TODO - move this check to cover the whole function 3655 if (!Objects.equals(newLp, oldLp)) { 3656 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3657 } 3658 } 3659 3660 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3661 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3662 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3663 3664 if (!wasRunningClat && shouldRunClat) { 3665 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3666 nai.clatd.start(); 3667 } else if (wasRunningClat && !shouldRunClat) { 3668 nai.clatd.stop(); 3669 } 3670 } 3671 3672 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3673 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3674 if (oldLp != null) { 3675 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3676 } else if (newLp != null) { 3677 interfaceDiff.added = newLp.getAllInterfaceNames(); 3678 } 3679 for (String iface : interfaceDiff.added) { 3680 try { 3681 if (DBG) log("Adding iface " + iface + " to network " + netId); 3682 mNetd.addInterfaceToNetwork(iface, netId); 3683 } catch (Exception e) { 3684 loge("Exception adding interface: " + e); 3685 } 3686 } 3687 for (String iface : interfaceDiff.removed) { 3688 try { 3689 if (DBG) log("Removing iface " + iface + " from network " + netId); 3690 mNetd.removeInterfaceFromNetwork(iface, netId); 3691 } catch (Exception e) { 3692 loge("Exception removing interface: " + e); 3693 } 3694 } 3695 } 3696 3697 /** 3698 * Have netd update routes from oldLp to newLp. 3699 * @return true if routes changed between oldLp and newLp 3700 */ 3701 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3702 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3703 if (oldLp != null) { 3704 routeDiff = oldLp.compareAllRoutes(newLp); 3705 } else if (newLp != null) { 3706 routeDiff.added = newLp.getAllRoutes(); 3707 } 3708 3709 // add routes before removing old in case it helps with continuous connectivity 3710 3711 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3712 for (RouteInfo route : routeDiff.added) { 3713 if (route.hasGateway()) continue; 3714 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3715 try { 3716 mNetd.addRoute(netId, route); 3717 } catch (Exception e) { 3718 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3719 loge("Exception in addRoute for non-gateway: " + e); 3720 } 3721 } 3722 } 3723 for (RouteInfo route : routeDiff.added) { 3724 if (route.hasGateway() == false) continue; 3725 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3726 try { 3727 mNetd.addRoute(netId, route); 3728 } catch (Exception e) { 3729 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3730 loge("Exception in addRoute for gateway: " + e); 3731 } 3732 } 3733 } 3734 3735 for (RouteInfo route : routeDiff.removed) { 3736 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3737 try { 3738 mNetd.removeRoute(netId, route); 3739 } catch (Exception e) { 3740 loge("Exception in removeRoute: " + e); 3741 } 3742 } 3743 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3744 } 3745 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 3746 boolean flush, boolean useDefaultDns) { 3747 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 3748 Collection<InetAddress> dnses = newLp.getDnsServers(); 3749 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 3750 dnses = new ArrayList(); 3751 dnses.add(mDefaultDns); 3752 if (DBG) { 3753 loge("no dns provided for netId " + netId + ", so using defaults"); 3754 } 3755 } 3756 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 3757 try { 3758 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 3759 newLp.getDomains()); 3760 } catch (Exception e) { 3761 loge("Exception in setDnsServersForNetwork: " + e); 3762 } 3763 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 3764 if (defaultNai != null && defaultNai.network.netId == netId) { 3765 setDefaultDnsSystemProperties(dnses); 3766 } 3767 flushVmDnsCache(); 3768 } else if (flush) { 3769 try { 3770 mNetd.flushNetworkDnsCache(netId); 3771 } catch (Exception e) { 3772 loge("Exception in flushNetworkDnsCache: " + e); 3773 } 3774 flushVmDnsCache(); 3775 } 3776 } 3777 3778 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 3779 int last = 0; 3780 for (InetAddress dns : dnses) { 3781 ++last; 3782 String key = "net.dns" + last; 3783 String value = dns.getHostAddress(); 3784 SystemProperties.set(key, value); 3785 } 3786 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 3787 String key = "net.dns" + i; 3788 SystemProperties.set(key, ""); 3789 } 3790 mNumDnsEntries = last; 3791 } 3792 3793 3794 private void updateCapabilities(NetworkAgentInfo networkAgent, 3795 NetworkCapabilities networkCapabilities) { 3796 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 3797 synchronized (networkAgent) { 3798 networkAgent.networkCapabilities = networkCapabilities; 3799 } 3800 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 3801 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 3802 } 3803 } 3804 3805 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 3806 for (int i = 0; i < nai.networkRequests.size(); i++) { 3807 NetworkRequest nr = nai.networkRequests.valueAt(i); 3808 // Don't send listening requests to factories. b/17393458 3809 if (!isRequest(nr)) continue; 3810 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 3811 } 3812 } 3813 3814 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 3815 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 3816 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3817 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 3818 networkRequest); 3819 } 3820 } 3821 3822 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 3823 int notificationType) { 3824 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE) { 3825 Intent intent = new Intent(); 3826 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 3827 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 3828 sendIntent(nri.mPendingIntent, intent); 3829 } 3830 // else not handled 3831 } 3832 3833 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 3834 mPendingIntentWakeLock.acquire(); 3835 try { 3836 if (DBG) log("Sending " + pendingIntent); 3837 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 3838 } catch (PendingIntent.CanceledException e) { 3839 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 3840 mPendingIntentWakeLock.release(); 3841 releasePendingNetworkRequest(pendingIntent); 3842 } 3843 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 3844 } 3845 3846 @Override 3847 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 3848 String resultData, Bundle resultExtras) { 3849 if (DBG) log("Finished sending " + pendingIntent); 3850 mPendingIntentWakeLock.release(); 3851 releasePendingNetworkRequest(pendingIntent); 3852 } 3853 3854 private void callCallbackForRequest(NetworkRequestInfo nri, 3855 NetworkAgentInfo networkAgent, int notificationType) { 3856 if (nri.messenger == null) return; // Default request has no msgr 3857 Bundle bundle = new Bundle(); 3858 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 3859 new NetworkRequest(nri.request)); 3860 Message msg = Message.obtain(); 3861 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 3862 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 3863 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 3864 } 3865 switch (notificationType) { 3866 case ConnectivityManager.CALLBACK_LOSING: { 3867 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 3868 break; 3869 } 3870 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 3871 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 3872 new NetworkCapabilities(networkAgent.networkCapabilities)); 3873 break; 3874 } 3875 case ConnectivityManager.CALLBACK_IP_CHANGED: { 3876 bundle.putParcelable(LinkProperties.class.getSimpleName(), 3877 new LinkProperties(networkAgent.linkProperties)); 3878 break; 3879 } 3880 } 3881 msg.what = notificationType; 3882 msg.setData(bundle); 3883 try { 3884 if (VDBG) { 3885 log("sending notification " + notifyTypeToName(notificationType) + 3886 " for " + nri.request); 3887 } 3888 nri.messenger.send(msg); 3889 } catch (RemoteException e) { 3890 // may occur naturally in the race of binder death. 3891 loge("RemoteException caught trying to send a callback msg for " + nri.request); 3892 } 3893 } 3894 3895 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 3896 for (int i = 0; i < nai.networkRequests.size(); i++) { 3897 NetworkRequest nr = nai.networkRequests.valueAt(i); 3898 // Ignore listening requests. 3899 if (!isRequest(nr)) continue; 3900 loge("Dead network still had at least " + nr); 3901 break; 3902 } 3903 nai.asyncChannel.disconnect(); 3904 } 3905 3906 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 3907 if (oldNetwork == null) { 3908 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 3909 return; 3910 } 3911 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 3912 teardownUnneededNetwork(oldNetwork); 3913 } 3914 3915 private void makeDefault(NetworkAgentInfo newNetwork) { 3916 if (DBG) log("Switching to new default network: " + newNetwork); 3917 setupDataActivityTracking(newNetwork); 3918 try { 3919 mNetd.setDefaultNetId(newNetwork.network.netId); 3920 } catch (Exception e) { 3921 loge("Exception setting default network :" + e); 3922 } 3923 notifyLockdownVpn(newNetwork); 3924 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 3925 updateTcpBufferSizes(newNetwork); 3926 } 3927 3928 // Handles a network appearing or improving its score. 3929 // 3930 // - Evaluates all current NetworkRequests that can be 3931 // satisfied by newNetwork, and reassigns to newNetwork 3932 // any such requests for which newNetwork is the best. 3933 // 3934 // - Lingers any Networks that as a result are no longer 3935 // needed. A network is needed if it is the best network for 3936 // one or more NetworkRequests, or if it is a VPN. 3937 // 3938 // - Tears down newNetwork if it just became validated 3939 // (i.e. nascent==true) but turns out to be unneeded. 3940 // Does not tear down newNetwork if it is unvalidated, 3941 // because future validation may improve newNetwork's 3942 // score enough that it is needed. 3943 // 3944 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 3945 // it does not remove NetworkRequests that other Networks could better satisfy. 3946 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 3947 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 3948 // as it performs better by a factor of the number of Networks. 3949 // 3950 // @param nascent indicates if newNetwork just became validated, in which case it should be 3951 // torn down if unneeded. If nascent is false, no action is taken if newNetwork 3952 // is found to be unneeded by this call. Presumably, in this case, either: 3953 // - newNetwork is unvalidated (and left alive), or 3954 // - the NetworkRequests keeping newNetwork alive have been transitioned to 3955 // another higher scoring network by another call to rematchNetworkAndRequests() 3956 // and this other call also lingered newNetwork. 3957 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, boolean nascent) { 3958 if (!newNetwork.created) return; 3959 if (nascent && !newNetwork.validated) loge("ERROR: nascent network not validated."); 3960 boolean keep = newNetwork.isVPN(); 3961 boolean isNewDefault = false; 3962 if (DBG) log("rematching " + newNetwork.name()); 3963 // Find and migrate to this Network any NetworkRequests for 3964 // which this network is now the best. 3965 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 3966 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 3967 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3968 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 3969 if (newNetwork == currentNetwork) { 3970 if (DBG) { 3971 log("Network " + newNetwork.name() + " was already satisfying" + 3972 " request " + nri.request.requestId + ". No change."); 3973 } 3974 keep = true; 3975 continue; 3976 } 3977 3978 // check if it satisfies the NetworkCapabilities 3979 if (VDBG) log(" checking if request is satisfied: " + nri.request); 3980 if (newNetwork.satisfies(nri.request)) { 3981 if (!nri.isRequest) { 3982 // This is not a request, it's a callback listener. 3983 // Add it to newNetwork regardless of score. 3984 newNetwork.addRequest(nri.request); 3985 continue; 3986 } 3987 3988 // next check if it's better than any current network we're using for 3989 // this request 3990 if (VDBG) { 3991 log("currentScore = " + 3992 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 3993 ", newScore = " + newNetwork.getCurrentScore()); 3994 } 3995 if (currentNetwork == null || 3996 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 3997 if (currentNetwork != null) { 3998 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 3999 currentNetwork.networkRequests.remove(nri.request.requestId); 4000 currentNetwork.networkLingered.add(nri.request); 4001 affectedNetworks.add(currentNetwork); 4002 } else { 4003 if (DBG) log(" accepting network in place of null"); 4004 } 4005 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4006 newNetwork.addRequest(nri.request); 4007 if (nri.isRequest && nri.request.legacyType != TYPE_NONE) { 4008 mLegacyTypeTracker.add(nri.request.legacyType, newNetwork); 4009 } 4010 keep = true; 4011 // Tell NetworkFactories about the new score, so they can stop 4012 // trying to connect if they know they cannot match it. 4013 // TODO - this could get expensive if we have alot of requests for this 4014 // network. Think about if there is a way to reduce this. Push 4015 // netid->request mapping to each factory? 4016 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4017 if (mDefaultRequest.requestId == nri.request.requestId) { 4018 isNewDefault = true; 4019 // TODO: Remove following line. It's redundant with makeDefault call. 4020 if (newNetwork.linkProperties != null) { 4021 updateTcpBufferSizes(newNetwork); 4022 setDefaultDnsSystemProperties( 4023 newNetwork.linkProperties.getDnsServers()); 4024 } else { 4025 setDefaultDnsSystemProperties(new ArrayList<InetAddress>()); 4026 } 4027 // Maintain the illusion: since the legacy API only 4028 // understands one network at a time, we must pretend 4029 // that the current default network disconnected before 4030 // the new one connected. 4031 if (currentNetwork != null) { 4032 mLegacyTypeTracker.remove(currentNetwork.networkInfo.getType(), 4033 currentNetwork); 4034 } 4035 mDefaultInetConditionPublished = newNetwork.validated ? 100 : 0; 4036 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4037 notifyLockdownVpn(newNetwork); 4038 } 4039 } 4040 } 4041 } 4042 // Linger any networks that are no longer needed. 4043 for (NetworkAgentInfo nai : affectedNetworks) { 4044 boolean teardown = !nai.isVPN() && nai.validated; 4045 for (int i = 0; i < nai.networkRequests.size() && teardown; i++) { 4046 NetworkRequest nr = nai.networkRequests.valueAt(i); 4047 try { 4048 if (isRequest(nr)) { 4049 teardown = false; 4050 } 4051 } catch (Exception e) { 4052 loge("Request " + nr + " not found in mNetworkRequests."); 4053 loge(" it came from request list of " + nai.name()); 4054 } 4055 } 4056 if (teardown) { 4057 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4058 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4059 } else { 4060 unlinger(nai); 4061 } 4062 } 4063 if (keep) { 4064 if (isNewDefault) { 4065 // Notify system services that this network is up. 4066 makeDefault(newNetwork); 4067 synchronized (ConnectivityService.this) { 4068 // have a new default network, release the transition wakelock in 4069 // a second if it's held. The second pause is to allow apps 4070 // to reconnect over the new network 4071 if (mNetTransitionWakeLock.isHeld()) { 4072 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4073 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4074 mNetTransitionWakeLockSerialNumber, 0), 4075 1000); 4076 } 4077 } 4078 } 4079 4080 // Notify battery stats service about this network, both the normal 4081 // interface and any stacked links. 4082 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4083 try { 4084 final IBatteryStats bs = BatteryStatsService.getService(); 4085 final int type = newNetwork.networkInfo.getType(); 4086 4087 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4088 bs.noteNetworkInterfaceType(baseIface, type); 4089 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4090 final String stackedIface = stacked.getInterfaceName(); 4091 bs.noteNetworkInterfaceType(stackedIface, type); 4092 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4093 } 4094 } catch (RemoteException ignored) { 4095 } 4096 4097 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4098 4099 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4100 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4101 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4102 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4103 if (newNetwork.isVPN()) { 4104 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4105 } 4106 } else if (nascent) { 4107 // Only tear down newly validated networks here. Leave unvalidated to either become 4108 // validated (and get evaluated against peers, one losing here) or 4109 // NetworkMonitor reports a bad network and we tear it down then. 4110 // Networks that have been up for a while and are validated should be torn down via 4111 // the lingering process so communication on that network is given time to wrap up. 4112 // TODO: Could teardown unvalidated networks when their NetworkCapabilities 4113 // satisfy no NetworkRequests. 4114 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4115 teardownUnneededNetwork(newNetwork); 4116 } 4117 } 4118 4119 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4120 // being disconnected. 4121 // If only one Network's score or capabilities have been modified since the last time 4122 // this function was called, pass this Network in via the "changed" arugment, otherwise 4123 // pass null. 4124 // If only one Network has been changed but its NetworkCapabilities have not changed, 4125 // pass in the Network's score (from getCurrentScore()) prior to the change via 4126 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4127 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4128 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4129 // to avoid the slowness. It is not simply enough to process just "changed", for 4130 // example in the case where "changed"'s score decreases and another network should begin 4131 // satifying a NetworkRequest that "changed" currently satisfies. 4132 4133 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4134 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4135 // rematchNetworkAndRequests() handles. 4136 if (changed != null && oldScore < changed.getCurrentScore()) { 4137 rematchNetworkAndRequests(changed, false); 4138 } else { 4139 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4140 rematchNetworkAndRequests(nai, false); 4141 } 4142 } 4143 } 4144 4145 private void updateInetCondition(NetworkAgentInfo nai, boolean valid) { 4146 // Don't bother updating until we've graduated to validated at least once. 4147 if (!nai.validated) return; 4148 // For now only update icons for default connection. 4149 // TODO: Update WiFi and cellular icons separately. b/17237507 4150 if (!isDefaultNetwork(nai)) return; 4151 4152 int newInetCondition = valid ? 100 : 0; 4153 // Don't repeat publish. 4154 if (newInetCondition == mDefaultInetConditionPublished) return; 4155 4156 mDefaultInetConditionPublished = newInetCondition; 4157 sendInetConditionBroadcast(nai.networkInfo); 4158 } 4159 4160 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4161 if (mLockdownTracker != null) { 4162 if (nai != null && nai.isVPN()) { 4163 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4164 } else { 4165 mLockdownTracker.onNetworkInfoChanged(); 4166 } 4167 } 4168 } 4169 4170 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4171 NetworkInfo.State state = newInfo.getState(); 4172 NetworkInfo oldInfo = null; 4173 synchronized (networkAgent) { 4174 oldInfo = networkAgent.networkInfo; 4175 networkAgent.networkInfo = newInfo; 4176 } 4177 notifyLockdownVpn(networkAgent); 4178 4179 if (oldInfo != null && oldInfo.getState() == state) { 4180 if (VDBG) log("ignoring duplicate network state non-change"); 4181 return; 4182 } 4183 if (DBG) { 4184 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4185 (oldInfo == null ? "null" : oldInfo.getState()) + 4186 " to " + state); 4187 } 4188 4189 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4190 try { 4191 // This should never fail. Specifying an already in use NetID will cause failure. 4192 if (networkAgent.isVPN()) { 4193 mNetd.createVirtualNetwork(networkAgent.network.netId, 4194 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4195 (networkAgent.networkMisc == null || 4196 !networkAgent.networkMisc.allowBypass)); 4197 } else { 4198 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4199 } 4200 } catch (Exception e) { 4201 loge("Error creating network " + networkAgent.network.netId + ": " 4202 + e.getMessage()); 4203 return; 4204 } 4205 networkAgent.created = true; 4206 updateLinkProperties(networkAgent, null); 4207 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4208 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4209 if (networkAgent.isVPN()) { 4210 // Temporarily disable the default proxy (not global). 4211 synchronized (mProxyLock) { 4212 if (!mDefaultProxyDisabled) { 4213 mDefaultProxyDisabled = true; 4214 if (mGlobalProxy == null && mDefaultProxy != null) { 4215 sendProxyBroadcast(null); 4216 } 4217 } 4218 } 4219 // TODO: support proxy per network. 4220 } 4221 // Consider network even though it is not yet validated. 4222 rematchNetworkAndRequests(networkAgent, false); 4223 } else if (state == NetworkInfo.State.DISCONNECTED || 4224 state == NetworkInfo.State.SUSPENDED) { 4225 networkAgent.asyncChannel.disconnect(); 4226 if (networkAgent.isVPN()) { 4227 synchronized (mProxyLock) { 4228 if (mDefaultProxyDisabled) { 4229 mDefaultProxyDisabled = false; 4230 if (mGlobalProxy == null && mDefaultProxy != null) { 4231 sendProxyBroadcast(mDefaultProxy); 4232 } 4233 } 4234 } 4235 } 4236 } 4237 } 4238 4239 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4240 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4241 if (score < 0) { 4242 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4243 "). Bumping score to min of 0"); 4244 score = 0; 4245 } 4246 4247 final int oldScore = nai.getCurrentScore(); 4248 nai.setCurrentScore(score); 4249 4250 rematchAllNetworksAndRequests(nai, oldScore); 4251 4252 sendUpdatedScoreToFactories(nai); 4253 } 4254 4255 // notify only this one new request of the current state 4256 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4257 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4258 // TODO - read state from monitor to decide what to send. 4259// if (nai.networkMonitor.isLingering()) { 4260// notifyType = NetworkCallbacks.LOSING; 4261// } else if (nai.networkMonitor.isEvaluating()) { 4262// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4263// } 4264 if (nri.mPendingIntent == null) { 4265 callCallbackForRequest(nri, nai, notifyType); 4266 } else { 4267 sendPendingIntentForRequest(nri, nai, notifyType); 4268 } 4269 } 4270 4271 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4272 // The NetworkInfo we actually send out has no bearing on the real 4273 // state of affairs. For example, if the default connection is mobile, 4274 // and a request for HIPRI has just gone away, we need to pretend that 4275 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4276 // the state to DISCONNECTED, even though the network is of type MOBILE 4277 // and is still connected. 4278 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4279 info.setType(type); 4280 if (connected) { 4281 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4282 sendConnectedBroadcast(info); 4283 } else { 4284 info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo()); 4285 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4286 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4287 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4288 if (info.isFailover()) { 4289 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4290 nai.networkInfo.setFailover(false); 4291 } 4292 if (info.getReason() != null) { 4293 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4294 } 4295 if (info.getExtraInfo() != null) { 4296 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4297 } 4298 NetworkAgentInfo newDefaultAgent = null; 4299 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4300 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4301 if (newDefaultAgent != null) { 4302 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4303 newDefaultAgent.networkInfo); 4304 } else { 4305 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4306 } 4307 } 4308 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4309 mDefaultInetConditionPublished); 4310 final Intent immediateIntent = new Intent(intent); 4311 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 4312 sendStickyBroadcast(immediateIntent); 4313 sendStickyBroadcast(intent); 4314 if (newDefaultAgent != null) { 4315 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4316 } 4317 } 4318 } 4319 4320 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4321 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4322 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4323 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4324 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4325 if (VDBG) log(" sending notification for " + nr); 4326 if (nri.mPendingIntent == null) { 4327 callCallbackForRequest(nri, networkAgent, notifyType); 4328 } else { 4329 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4330 } 4331 } 4332 } 4333 4334 private String notifyTypeToName(int notifyType) { 4335 switch (notifyType) { 4336 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4337 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4338 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4339 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4340 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4341 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4342 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4343 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4344 } 4345 return "UNKNOWN"; 4346 } 4347 4348 @Override 4349 public boolean addVpnAddress(String address, int prefixLength) { 4350 throwIfLockdownEnabled(); 4351 int user = UserHandle.getUserId(Binder.getCallingUid()); 4352 synchronized (mVpns) { 4353 return mVpns.get(user).addAddress(address, prefixLength); 4354 } 4355 } 4356 4357 @Override 4358 public boolean removeVpnAddress(String address, int prefixLength) { 4359 throwIfLockdownEnabled(); 4360 int user = UserHandle.getUserId(Binder.getCallingUid()); 4361 synchronized (mVpns) { 4362 return mVpns.get(user).removeAddress(address, prefixLength); 4363 } 4364 } 4365 4366 @Override 4367 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4368 throwIfLockdownEnabled(); 4369 int user = UserHandle.getUserId(Binder.getCallingUid()); 4370 synchronized (mVpns) { 4371 return mVpns.get(user).setUnderlyingNetworks(networks); 4372 } 4373 } 4374} 4375