ConnectivityService.java revision 829dfa7cd80faa61b3f63c455f81411571144f82
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 int getConnectivityChangeDelay() { 801 final ContentResolver cr = mContext.getContentResolver(); 802 803 /** Check system properties for the default value then use secure settings value, if any. */ 804 int defaultDelay = SystemProperties.getInt( 805 "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY, 806 ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT); 807 return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY, 808 defaultDelay); 809 } 810 811 private boolean teardown(NetworkStateTracker netTracker) { 812 if (netTracker.teardown()) { 813 netTracker.setTeardownRequested(true); 814 return true; 815 } else { 816 return false; 817 } 818 } 819 820 private NetworkState getFilteredNetworkState(int networkType, int uid) { 821 NetworkInfo info = null; 822 LinkProperties lp = null; 823 NetworkCapabilities nc = null; 824 Network network = null; 825 826 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 827 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 828 if (nai != null) { 829 synchronized (nai) { 830 info = new NetworkInfo(nai.networkInfo); 831 lp = new LinkProperties(nai.linkProperties); 832 nc = new NetworkCapabilities(nai.networkCapabilities); 833 network = new Network(nai.network); 834 } 835 info.setType(networkType); 836 } else { 837 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 838 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 839 info.setIsAvailable(true); 840 lp = new LinkProperties(); 841 nc = new NetworkCapabilities(); 842 network = null; 843 } 844 info = getFilteredNetworkInfo(info, lp, uid); 845 } 846 847 return new NetworkState(info, lp, nc, network); 848 } 849 850 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 851 if (network == null) { 852 return null; 853 } 854 synchronized (mNetworkForNetId) { 855 return mNetworkForNetId.get(network.netId); 856 } 857 }; 858 859 private NetworkState getUnfilteredActiveNetworkState(int uid) { 860 NetworkInfo info = null; 861 LinkProperties lp = null; 862 NetworkCapabilities nc = null; 863 Network network = null; 864 865 NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId); 866 867 if (!mLockdownEnabled) { 868 int user = UserHandle.getUserId(uid); 869 synchronized (mVpns) { 870 Vpn vpn = mVpns.get(user); 871 if (vpn != null && vpn.appliesToUid(uid)) { 872 // getUnderlyingNetworks() returns: 873 // null => the VPN didn't specify anything, so we use the default. 874 // empty array => the VPN explicitly said "no default network". 875 // non-empty array => the VPN specified one or more default networks; we use the 876 // first one. 877 Network[] networks = vpn.getUnderlyingNetworks(); 878 if (networks != null) { 879 if (networks.length > 0) { 880 nai = getNetworkAgentInfoForNetwork(networks[0]); 881 } else { 882 nai = null; 883 } 884 } 885 } 886 } 887 } 888 889 if (nai != null) { 890 synchronized (nai) { 891 info = new NetworkInfo(nai.networkInfo); 892 lp = new LinkProperties(nai.linkProperties); 893 nc = new NetworkCapabilities(nai.networkCapabilities); 894 network = new Network(nai.network); 895 } 896 } 897 898 return new NetworkState(info, lp, nc, network); 899 } 900 901 /** 902 * Check if UID should be blocked from using the network with the given LinkProperties. 903 */ 904 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 905 final boolean networkCostly; 906 final int uidRules; 907 908 final String iface = (lp == null ? "" : lp.getInterfaceName()); 909 synchronized (mRulesLock) { 910 networkCostly = mMeteredIfaces.contains(iface); 911 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 912 } 913 914 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 915 return true; 916 } 917 918 // no restrictive rules; network is visible 919 return false; 920 } 921 922 /** 923 * Return a filtered {@link NetworkInfo}, potentially marked 924 * {@link DetailedState#BLOCKED} based on 925 * {@link #isNetworkWithLinkPropertiesBlocked}. 926 */ 927 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 928 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 929 // network is blocked; clone and override state 930 info = new NetworkInfo(info); 931 info.setDetailedState(DetailedState.BLOCKED, null, null); 932 if (DBG) log("returning Blocked NetworkInfo"); 933 } 934 if (info != null && mLockdownTracker != null) { 935 info = mLockdownTracker.augmentNetworkInfo(info); 936 if (DBG) log("returning Locked NetworkInfo"); 937 } 938 return info; 939 } 940 941 /** 942 * Return NetworkInfo for the active (i.e., connected) network interface. 943 * It is assumed that at most one network is active at a time. If more 944 * than one is active, it is indeterminate which will be returned. 945 * @return the info for the active network, or {@code null} if none is 946 * active 947 */ 948 @Override 949 public NetworkInfo getActiveNetworkInfo() { 950 enforceAccessPermission(); 951 final int uid = Binder.getCallingUid(); 952 NetworkState state = getUnfilteredActiveNetworkState(uid); 953 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 954 } 955 956 /** 957 * Find the first Provisioning network. 958 * 959 * @return NetworkInfo or null if none. 960 */ 961 private NetworkInfo getProvisioningNetworkInfo() { 962 enforceAccessPermission(); 963 964 // Find the first Provisioning Network 965 NetworkInfo provNi = null; 966 for (NetworkInfo ni : getAllNetworkInfo()) { 967 if (ni.isConnectedToProvisioningNetwork()) { 968 provNi = ni; 969 break; 970 } 971 } 972 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 973 return provNi; 974 } 975 976 /** 977 * Find the first Provisioning network or the ActiveDefaultNetwork 978 * if there is no Provisioning network 979 * 980 * @return NetworkInfo or null if none. 981 */ 982 @Override 983 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 984 enforceAccessPermission(); 985 986 NetworkInfo provNi = getProvisioningNetworkInfo(); 987 if (provNi == null) { 988 provNi = getActiveNetworkInfo(); 989 } 990 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 991 return provNi; 992 } 993 994 public NetworkInfo getActiveNetworkInfoUnfiltered() { 995 enforceAccessPermission(); 996 final int uid = Binder.getCallingUid(); 997 NetworkState state = getUnfilteredActiveNetworkState(uid); 998 return state.networkInfo; 999 } 1000 1001 @Override 1002 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1003 enforceConnectivityInternalPermission(); 1004 NetworkState state = getUnfilteredActiveNetworkState(uid); 1005 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1006 } 1007 1008 @Override 1009 public NetworkInfo getNetworkInfo(int networkType) { 1010 enforceAccessPermission(); 1011 final int uid = Binder.getCallingUid(); 1012 NetworkState state = getFilteredNetworkState(networkType, uid); 1013 return state.networkInfo; 1014 } 1015 1016 @Override 1017 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1018 enforceAccessPermission(); 1019 final int uid = Binder.getCallingUid(); 1020 NetworkInfo info = null; 1021 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1022 if (nai != null) { 1023 synchronized (nai) { 1024 info = new NetworkInfo(nai.networkInfo); 1025 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1026 } 1027 } 1028 return info; 1029 } 1030 1031 @Override 1032 public NetworkInfo[] getAllNetworkInfo() { 1033 enforceAccessPermission(); 1034 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1035 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1036 networkType++) { 1037 NetworkInfo info = getNetworkInfo(networkType); 1038 if (info != null) { 1039 result.add(info); 1040 } 1041 } 1042 return result.toArray(new NetworkInfo[result.size()]); 1043 } 1044 1045 @Override 1046 public Network getNetworkForType(int networkType) { 1047 enforceAccessPermission(); 1048 final int uid = Binder.getCallingUid(); 1049 NetworkState state = getFilteredNetworkState(networkType, uid); 1050 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1051 return state.network; 1052 } 1053 return null; 1054 } 1055 1056 @Override 1057 public Network[] getAllNetworks() { 1058 enforceAccessPermission(); 1059 final ArrayList<Network> result = new ArrayList(); 1060 synchronized (mNetworkForNetId) { 1061 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1062 result.add(new Network(mNetworkForNetId.valueAt(i).network)); 1063 } 1064 } 1065 return result.toArray(new Network[result.size()]); 1066 } 1067 1068 @Override 1069 public boolean isNetworkSupported(int networkType) { 1070 enforceAccessPermission(); 1071 return mLegacyTypeTracker.isTypeSupported(networkType); 1072 } 1073 1074 /** 1075 * Return LinkProperties for the active (i.e., connected) default 1076 * network interface. It is assumed that at most one default network 1077 * is active at a time. If more than one is active, it is indeterminate 1078 * which will be returned. 1079 * @return the ip properties for the active network, or {@code null} if 1080 * none is active 1081 */ 1082 @Override 1083 public LinkProperties getActiveLinkProperties() { 1084 enforceAccessPermission(); 1085 final int uid = Binder.getCallingUid(); 1086 NetworkState state = getUnfilteredActiveNetworkState(uid); 1087 return state.linkProperties; 1088 } 1089 1090 @Override 1091 public LinkProperties getLinkPropertiesForType(int networkType) { 1092 enforceAccessPermission(); 1093 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1094 if (nai != null) { 1095 synchronized (nai) { 1096 return new LinkProperties(nai.linkProperties); 1097 } 1098 } 1099 return null; 1100 } 1101 1102 // TODO - this should be ALL networks 1103 @Override 1104 public LinkProperties getLinkProperties(Network network) { 1105 enforceAccessPermission(); 1106 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1107 if (nai != null) { 1108 synchronized (nai) { 1109 return new LinkProperties(nai.linkProperties); 1110 } 1111 } 1112 return null; 1113 } 1114 1115 @Override 1116 public NetworkCapabilities getNetworkCapabilities(Network network) { 1117 enforceAccessPermission(); 1118 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1119 if (nai != null) { 1120 synchronized (nai) { 1121 return new NetworkCapabilities(nai.networkCapabilities); 1122 } 1123 } 1124 return null; 1125 } 1126 1127 @Override 1128 public NetworkState[] getAllNetworkState() { 1129 enforceAccessPermission(); 1130 final int uid = Binder.getCallingUid(); 1131 final ArrayList<NetworkState> result = Lists.newArrayList(); 1132 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1133 networkType++) { 1134 NetworkState state = getFilteredNetworkState(networkType, uid); 1135 if (state.networkInfo != null) { 1136 result.add(state); 1137 } 1138 } 1139 return result.toArray(new NetworkState[result.size()]); 1140 } 1141 1142 @Override 1143 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1144 enforceAccessPermission(); 1145 final int uid = Binder.getCallingUid(); 1146 final long token = Binder.clearCallingIdentity(); 1147 try { 1148 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1149 if (state.networkInfo != null) { 1150 try { 1151 return mPolicyManager.getNetworkQuotaInfo(state); 1152 } catch (RemoteException e) { 1153 } 1154 } 1155 return null; 1156 } finally { 1157 Binder.restoreCallingIdentity(token); 1158 } 1159 } 1160 1161 @Override 1162 public boolean isActiveNetworkMetered() { 1163 enforceAccessPermission(); 1164 final int uid = Binder.getCallingUid(); 1165 final long token = Binder.clearCallingIdentity(); 1166 try { 1167 return isActiveNetworkMeteredUnchecked(uid); 1168 } finally { 1169 Binder.restoreCallingIdentity(token); 1170 } 1171 } 1172 1173 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1174 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1175 if (state.networkInfo != null) { 1176 try { 1177 return mPolicyManager.isNetworkMetered(state); 1178 } catch (RemoteException e) { 1179 } 1180 } 1181 return false; 1182 } 1183 1184 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1185 @Override 1186 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1187 int deviceType = Integer.parseInt(label); 1188 sendDataActivityBroadcast(deviceType, active, tsNanos); 1189 } 1190 }; 1191 1192 /** 1193 * Ensure that a network route exists to deliver traffic to the specified 1194 * host via the specified network interface. 1195 * @param networkType the type of the network over which traffic to the 1196 * specified host is to be routed 1197 * @param hostAddress the IP address of the host to which the route is 1198 * desired 1199 * @return {@code true} on success, {@code false} on failure 1200 */ 1201 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1202 enforceChangePermission(); 1203 if (mProtectedNetworks.contains(networkType)) { 1204 enforceConnectivityInternalPermission(); 1205 } 1206 1207 InetAddress addr; 1208 try { 1209 addr = InetAddress.getByAddress(hostAddress); 1210 } catch (UnknownHostException e) { 1211 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1212 return false; 1213 } 1214 1215 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1216 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1217 return false; 1218 } 1219 1220 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1221 if (nai == null) { 1222 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1223 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1224 } else { 1225 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1226 } 1227 return false; 1228 } 1229 1230 DetailedState netState; 1231 synchronized (nai) { 1232 netState = nai.networkInfo.getDetailedState(); 1233 } 1234 1235 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1236 if (VDBG) { 1237 log("requestRouteToHostAddress on down network " 1238 + "(" + networkType + ") - dropped" 1239 + " netState=" + netState); 1240 } 1241 return false; 1242 } 1243 1244 final int uid = Binder.getCallingUid(); 1245 final long token = Binder.clearCallingIdentity(); 1246 try { 1247 LinkProperties lp; 1248 int netId; 1249 synchronized (nai) { 1250 lp = nai.linkProperties; 1251 netId = nai.network.netId; 1252 } 1253 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1254 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1255 return ok; 1256 } finally { 1257 Binder.restoreCallingIdentity(token); 1258 } 1259 } 1260 1261 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1262 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1263 if (bestRoute == null) { 1264 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1265 } else { 1266 String iface = bestRoute.getInterface(); 1267 if (bestRoute.getGateway().equals(addr)) { 1268 // if there is no better route, add the implied hostroute for our gateway 1269 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1270 } else { 1271 // if we will connect to this through another route, add a direct route 1272 // to it's gateway 1273 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1274 } 1275 } 1276 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1277 try { 1278 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1279 } catch (Exception e) { 1280 // never crash - catch them all 1281 if (DBG) loge("Exception trying to add a route: " + e); 1282 return false; 1283 } 1284 return true; 1285 } 1286 1287 public void setDataDependency(int networkType, boolean met) { 1288 enforceConnectivityInternalPermission(); 1289 1290 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1291 (met ? ENABLED : DISABLED), networkType)); 1292 } 1293 1294 private void handleSetDependencyMet(int networkType, boolean met) { 1295 if (mNetTrackers[networkType] != null) { 1296 if (DBG) { 1297 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1298 } 1299 mNetTrackers[networkType].setDependencyMet(met); 1300 } 1301 } 1302 1303 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1304 @Override 1305 public void onUidRulesChanged(int uid, int uidRules) { 1306 // caller is NPMS, since we only register with them 1307 if (LOGD_RULES) { 1308 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1309 } 1310 1311 synchronized (mRulesLock) { 1312 // skip update when we've already applied rules 1313 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1314 if (oldRules == uidRules) return; 1315 1316 mUidRules.put(uid, uidRules); 1317 } 1318 1319 // TODO: notify UID when it has requested targeted updates 1320 } 1321 1322 @Override 1323 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1324 // caller is NPMS, since we only register with them 1325 if (LOGD_RULES) { 1326 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1327 } 1328 1329 synchronized (mRulesLock) { 1330 mMeteredIfaces.clear(); 1331 for (String iface : meteredIfaces) { 1332 mMeteredIfaces.add(iface); 1333 } 1334 } 1335 } 1336 1337 @Override 1338 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1339 // caller is NPMS, since we only register with them 1340 if (LOGD_RULES) { 1341 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1342 } 1343 1344 // kick off connectivity change broadcast for active network, since 1345 // global background policy change is radical. 1346 // TODO: Dead code; remove. 1347 // 1348 // final int networkType = mActiveDefaultNetwork; 1349 // if (isNetworkTypeValid(networkType)) { 1350 // final NetworkStateTracker tracker = mNetTrackers[networkType]; 1351 // if (tracker != null) { 1352 // final NetworkInfo info = tracker.getNetworkInfo(); 1353 // if (info != null && info.isConnected()) { 1354 // sendConnectedBroadcast(info); 1355 // } 1356 // } 1357 // } 1358 } 1359 }; 1360 1361 @Override 1362 public void setPolicyDataEnable(int networkType, boolean enabled) { 1363 // only someone like NPMS should only be calling us 1364 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1365 1366 mHandler.sendMessage(mHandler.obtainMessage( 1367 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1368 } 1369 1370 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1371 // TODO - handle this passing to factories 1372// if (isNetworkTypeValid(networkType)) { 1373// final NetworkStateTracker tracker = mNetTrackers[networkType]; 1374// if (tracker != null) { 1375// tracker.setPolicyDataEnable(enabled); 1376// } 1377// } 1378 } 1379 1380 private void enforceInternetPermission() { 1381 mContext.enforceCallingOrSelfPermission( 1382 android.Manifest.permission.INTERNET, 1383 "ConnectivityService"); 1384 } 1385 1386 private void enforceAccessPermission() { 1387 mContext.enforceCallingOrSelfPermission( 1388 android.Manifest.permission.ACCESS_NETWORK_STATE, 1389 "ConnectivityService"); 1390 } 1391 1392 private void enforceChangePermission() { 1393 mContext.enforceCallingOrSelfPermission( 1394 android.Manifest.permission.CHANGE_NETWORK_STATE, 1395 "ConnectivityService"); 1396 } 1397 1398 private void enforceTetherAccessPermission() { 1399 mContext.enforceCallingOrSelfPermission( 1400 android.Manifest.permission.ACCESS_NETWORK_STATE, 1401 "ConnectivityService"); 1402 } 1403 1404 private void enforceConnectivityInternalPermission() { 1405 mContext.enforceCallingOrSelfPermission( 1406 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1407 "ConnectivityService"); 1408 } 1409 1410 public void sendConnectedBroadcast(NetworkInfo info) { 1411 enforceConnectivityInternalPermission(); 1412 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1413 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1414 } 1415 1416 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 1417 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1418 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 1419 } 1420 1421 private void sendInetConditionBroadcast(NetworkInfo info) { 1422 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1423 } 1424 1425 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1426 if (mLockdownTracker != null) { 1427 info = mLockdownTracker.augmentNetworkInfo(info); 1428 } 1429 1430 Intent intent = new Intent(bcastType); 1431 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1432 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1433 if (info.isFailover()) { 1434 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1435 info.setFailover(false); 1436 } 1437 if (info.getReason() != null) { 1438 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1439 } 1440 if (info.getExtraInfo() != null) { 1441 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1442 info.getExtraInfo()); 1443 } 1444 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1445 return intent; 1446 } 1447 1448 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1449 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1450 } 1451 1452 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 1453 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 1454 } 1455 1456 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1457 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1458 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1459 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1460 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1461 final long ident = Binder.clearCallingIdentity(); 1462 try { 1463 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1464 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1465 } finally { 1466 Binder.restoreCallingIdentity(ident); 1467 } 1468 } 1469 1470 private void sendStickyBroadcast(Intent intent) { 1471 synchronized(this) { 1472 if (!mSystemReady) { 1473 mInitialBroadcast = new Intent(intent); 1474 } 1475 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1476 if (DBG) { 1477 log("sendStickyBroadcast: action=" + intent.getAction()); 1478 } 1479 1480 final long ident = Binder.clearCallingIdentity(); 1481 try { 1482 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1483 } finally { 1484 Binder.restoreCallingIdentity(ident); 1485 } 1486 } 1487 } 1488 1489 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 1490 if (delayMs <= 0) { 1491 sendStickyBroadcast(intent); 1492 } else { 1493 if (VDBG) { 1494 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 1495 + intent.getAction()); 1496 } 1497 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1498 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 1499 } 1500 } 1501 1502 void systemReady() { 1503 // start network sampling .. 1504 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 1505 intent.setPackage(mContext.getPackageName()); 1506 1507 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 1508 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 1509 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 1510 1511 loadGlobalProxy(); 1512 1513 synchronized(this) { 1514 mSystemReady = true; 1515 if (mInitialBroadcast != null) { 1516 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1517 mInitialBroadcast = null; 1518 } 1519 } 1520 // load the global proxy at startup 1521 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1522 1523 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1524 // for user to unlock device. 1525 if (!updateLockdownVpn()) { 1526 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1527 mContext.registerReceiver(mUserPresentReceiver, filter); 1528 } 1529 1530 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1531 1532 mPermissionMonitor.startMonitoring(); 1533 } 1534 1535 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1536 @Override 1537 public void onReceive(Context context, Intent intent) { 1538 // Try creating lockdown tracker, since user present usually means 1539 // unlocked keystore. 1540 if (updateLockdownVpn()) { 1541 mContext.unregisterReceiver(this); 1542 } 1543 } 1544 }; 1545 1546 /** @hide */ 1547 @Override 1548 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1549 enforceConnectivityInternalPermission(); 1550 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1551// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1552 } 1553 1554 /** 1555 * Setup data activity tracking for the given network. 1556 * 1557 * Every {@code setupDataActivityTracking} should be paired with a 1558 * {@link #removeDataActivityTracking} for cleanup. 1559 */ 1560 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1561 final String iface = networkAgent.linkProperties.getInterfaceName(); 1562 1563 final int timeout; 1564 int type = ConnectivityManager.TYPE_NONE; 1565 1566 if (networkAgent.networkCapabilities.hasTransport( 1567 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1568 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1569 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1570 5); 1571 type = ConnectivityManager.TYPE_MOBILE; 1572 } else if (networkAgent.networkCapabilities.hasTransport( 1573 NetworkCapabilities.TRANSPORT_WIFI)) { 1574 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1575 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1576 0); 1577 type = ConnectivityManager.TYPE_WIFI; 1578 } else { 1579 // do not track any other networks 1580 timeout = 0; 1581 } 1582 1583 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1584 try { 1585 mNetd.addIdleTimer(iface, timeout, type); 1586 } catch (Exception e) { 1587 // You shall not crash! 1588 loge("Exception in setupDataActivityTracking " + e); 1589 } 1590 } 1591 } 1592 1593 /** 1594 * Remove data activity tracking when network disconnects. 1595 */ 1596 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1597 final String iface = networkAgent.linkProperties.getInterfaceName(); 1598 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1599 1600 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1601 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1602 try { 1603 // the call fails silently if no idletimer setup for this interface 1604 mNetd.removeIdleTimer(iface); 1605 } catch (Exception e) { 1606 loge("Exception in removeDataActivityTracking " + e); 1607 } 1608 } 1609 } 1610 1611 /** 1612 * Reads the network specific MTU size from reources. 1613 * and set it on it's iface. 1614 */ 1615 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1616 final String iface = newLp.getInterfaceName(); 1617 final int mtu = newLp.getMtu(); 1618 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1619 if (VDBG) log("identical MTU - not setting"); 1620 return; 1621 } 1622 1623 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1624 loge("Unexpected mtu value: " + mtu + ", " + iface); 1625 return; 1626 } 1627 1628 // Cannot set MTU without interface name 1629 if (TextUtils.isEmpty(iface)) { 1630 loge("Setting MTU size with null iface."); 1631 return; 1632 } 1633 1634 try { 1635 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1636 mNetd.setMtu(iface, mtu); 1637 } catch (Exception e) { 1638 Slog.e(TAG, "exception in setMtu()" + e); 1639 } 1640 } 1641 1642 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1643 1644 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1645 if (isDefaultNetwork(nai) == false) { 1646 return; 1647 } 1648 1649 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1650 String[] values = null; 1651 if (tcpBufferSizes != null) { 1652 values = tcpBufferSizes.split(","); 1653 } 1654 1655 if (values == null || values.length != 6) { 1656 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1657 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1658 values = tcpBufferSizes.split(","); 1659 } 1660 1661 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1662 1663 try { 1664 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1665 1666 final String prefix = "/sys/kernel/ipv4/tcp_"; 1667 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1668 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1669 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1670 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1671 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1672 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1673 mCurrentTcpBufferSizes = tcpBufferSizes; 1674 } catch (IOException e) { 1675 loge("Can't set TCP buffer sizes:" + e); 1676 } 1677 1678 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 1679 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 1680 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1681 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 1682 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1683 if (rwndValue != 0) { 1684 SystemProperties.set(sysctlKey, rwndValue.toString()); 1685 } 1686 } 1687 1688 private void flushVmDnsCache() { 1689 /* 1690 * Tell the VMs to toss their DNS caches 1691 */ 1692 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1693 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1694 /* 1695 * Connectivity events can happen before boot has completed ... 1696 */ 1697 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1698 final long ident = Binder.clearCallingIdentity(); 1699 try { 1700 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1701 } finally { 1702 Binder.restoreCallingIdentity(ident); 1703 } 1704 } 1705 1706 @Override 1707 public int getRestoreDefaultNetworkDelay(int networkType) { 1708 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1709 NETWORK_RESTORE_DELAY_PROP_NAME); 1710 if(restoreDefaultNetworkDelayStr != null && 1711 restoreDefaultNetworkDelayStr.length() != 0) { 1712 try { 1713 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1714 } catch (NumberFormatException e) { 1715 } 1716 } 1717 // if the system property isn't set, use the value for the apn type 1718 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1719 1720 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1721 (mNetConfigs[networkType] != null)) { 1722 ret = mNetConfigs[networkType].restoreTime; 1723 } 1724 return ret; 1725 } 1726 1727 @Override 1728 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1729 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1730 if (mContext.checkCallingOrSelfPermission( 1731 android.Manifest.permission.DUMP) 1732 != PackageManager.PERMISSION_GRANTED) { 1733 pw.println("Permission Denial: can't dump ConnectivityService " + 1734 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1735 Binder.getCallingUid()); 1736 return; 1737 } 1738 1739 pw.println("NetworkFactories for:"); 1740 pw.increaseIndent(); 1741 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1742 pw.println(nfi.name); 1743 } 1744 pw.decreaseIndent(); 1745 pw.println(); 1746 1747 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1748 pw.print("Active default network: "); 1749 if (defaultNai == null) { 1750 pw.println("none"); 1751 } else { 1752 pw.println(defaultNai.network.netId); 1753 } 1754 pw.println(); 1755 1756 pw.println("Current Networks:"); 1757 pw.increaseIndent(); 1758 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1759 pw.println(nai.toString()); 1760 pw.increaseIndent(); 1761 pw.println("Requests:"); 1762 pw.increaseIndent(); 1763 for (int i = 0; i < nai.networkRequests.size(); i++) { 1764 pw.println(nai.networkRequests.valueAt(i).toString()); 1765 } 1766 pw.decreaseIndent(); 1767 pw.println("Lingered:"); 1768 pw.increaseIndent(); 1769 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1770 pw.decreaseIndent(); 1771 pw.decreaseIndent(); 1772 } 1773 pw.decreaseIndent(); 1774 pw.println(); 1775 1776 pw.println("Network Requests:"); 1777 pw.increaseIndent(); 1778 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1779 pw.println(nri.toString()); 1780 } 1781 pw.println(); 1782 pw.decreaseIndent(); 1783 1784 pw.println("mLegacyTypeTracker:"); 1785 pw.increaseIndent(); 1786 mLegacyTypeTracker.dump(pw); 1787 pw.decreaseIndent(); 1788 pw.println(); 1789 1790 synchronized (this) { 1791 pw.println("NetworkTransitionWakeLock is currently " + 1792 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 1793 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 1794 } 1795 pw.println(); 1796 1797 mTethering.dump(fd, pw, args); 1798 1799 if (mInetLog != null) { 1800 pw.println(); 1801 pw.println("Inet condition reports:"); 1802 pw.increaseIndent(); 1803 for(int i = 0; i < mInetLog.size(); i++) { 1804 pw.println(mInetLog.get(i)); 1805 } 1806 pw.decreaseIndent(); 1807 } 1808 } 1809 1810 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1811 if (nai.network == null) return false; 1812 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1813 if (officialNai != null && officialNai.equals(nai)) return true; 1814 if (officialNai != null || VDBG) { 1815 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1816 " - " + nai); 1817 } 1818 return false; 1819 } 1820 1821 private boolean isRequest(NetworkRequest request) { 1822 return mNetworkRequests.get(request).isRequest; 1823 } 1824 1825 // must be stateless - things change under us. 1826 private class NetworkStateTrackerHandler extends Handler { 1827 public NetworkStateTrackerHandler(Looper looper) { 1828 super(looper); 1829 } 1830 1831 @Override 1832 public void handleMessage(Message msg) { 1833 NetworkInfo info; 1834 switch (msg.what) { 1835 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1836 handleAsyncChannelHalfConnect(msg); 1837 break; 1838 } 1839 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1840 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1841 if (nai != null) nai.asyncChannel.disconnect(); 1842 break; 1843 } 1844 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1845 handleAsyncChannelDisconnected(msg); 1846 break; 1847 } 1848 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1849 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1850 if (nai == null) { 1851 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1852 } else { 1853 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1854 } 1855 break; 1856 } 1857 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1858 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1859 if (nai == null) { 1860 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1861 } else { 1862 if (VDBG) { 1863 log("Update of LinkProperties for " + nai.name() + 1864 "; created=" + nai.created); 1865 } 1866 LinkProperties oldLp = nai.linkProperties; 1867 synchronized (nai) { 1868 nai.linkProperties = (LinkProperties)msg.obj; 1869 } 1870 if (nai.created) updateLinkProperties(nai, oldLp); 1871 } 1872 break; 1873 } 1874 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1875 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1876 if (nai == null) { 1877 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1878 break; 1879 } 1880 info = (NetworkInfo) msg.obj; 1881 updateNetworkInfo(nai, info); 1882 break; 1883 } 1884 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1885 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1886 if (nai == null) { 1887 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1888 break; 1889 } 1890 Integer score = (Integer) msg.obj; 1891 if (score != null) updateNetworkScore(nai, score.intValue()); 1892 break; 1893 } 1894 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1895 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1896 if (nai == null) { 1897 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1898 break; 1899 } 1900 try { 1901 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1902 } catch (Exception e) { 1903 // Never crash! 1904 loge("Exception in addVpnUidRanges: " + e); 1905 } 1906 break; 1907 } 1908 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1909 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1910 if (nai == null) { 1911 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1912 break; 1913 } 1914 try { 1915 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1916 } catch (Exception e) { 1917 // Never crash! 1918 loge("Exception in removeVpnUidRanges: " + e); 1919 } 1920 break; 1921 } 1922 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1923 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1924 if (nai == null) { 1925 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1926 break; 1927 } 1928 if (nai.created && !nai.networkMisc.explicitlySelected) { 1929 loge("ERROR: created network explicitly selected."); 1930 } 1931 nai.networkMisc.explicitlySelected = true; 1932 break; 1933 } 1934 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1935 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1936 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_VALIDATED")) { 1937 boolean valid = (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1938 if (valid) { 1939 if (DBG) log("Validated " + nai.name()); 1940 final boolean previouslyValidated = nai.validated; 1941 final int previousScore = nai.getCurrentScore(); 1942 nai.validated = true; 1943 rematchNetworkAndRequests(nai, !previouslyValidated); 1944 // If score has changed, rebroadcast to NetworkFactories. b/17726566 1945 if (nai.getCurrentScore() != previousScore) { 1946 sendUpdatedScoreToFactories(nai); 1947 } 1948 } 1949 updateInetCondition(nai, valid); 1950 // Let the NetworkAgent know the state of its network 1951 nai.asyncChannel.sendMessage( 1952 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 1953 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 1954 0, null); 1955 } 1956 break; 1957 } 1958 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 1959 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1960 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 1961 handleLingerComplete(nai); 1962 } 1963 break; 1964 } 1965 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 1966 if (msg.arg1 == 0) { 1967 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 1968 } else { 1969 NetworkAgentInfo nai = null; 1970 synchronized (mNetworkForNetId) { 1971 nai = mNetworkForNetId.get(msg.arg2); 1972 } 1973 if (nai == null) { 1974 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 1975 break; 1976 } 1977 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 1978 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 1979 } 1980 break; 1981 } 1982 case NetworkStateTracker.EVENT_STATE_CHANGED: { 1983 info = (NetworkInfo) msg.obj; 1984 NetworkInfo.State state = info.getState(); 1985 1986 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 1987 (state == NetworkInfo.State.DISCONNECTED) || 1988 (state == NetworkInfo.State.SUSPENDED)) { 1989 log("ConnectivityChange for " + 1990 info.getTypeName() + ": " + 1991 state + "/" + info.getDetailedState()); 1992 } 1993 1994 EventLogTags.writeConnectivityStateChanged( 1995 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 1996 1997 if (info.isConnectedToProvisioningNetwork()) { 1998 /** 1999 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 2000 * for now its an in between network, its a network that 2001 * is actually a default network but we don't want it to be 2002 * announced as such to keep background applications from 2003 * trying to use it. It turns out that some still try so we 2004 * take the additional step of clearing any default routes 2005 * to the link that may have incorrectly setup by the lower 2006 * levels. 2007 */ 2008 LinkProperties lp = getLinkPropertiesForType(info.getType()); 2009 if (DBG) { 2010 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 2011 } 2012 2013 // Clear any default routes setup by the radio so 2014 // any activity by applications trying to use this 2015 // connection will fail until the provisioning network 2016 // is enabled. 2017 /* 2018 for (RouteInfo r : lp.getRoutes()) { 2019 removeRoute(lp, r, TO_DEFAULT_TABLE, 2020 mNetTrackers[info.getType()].getNetwork().netId); 2021 } 2022 */ 2023 } else if (state == NetworkInfo.State.DISCONNECTED) { 2024 } else if (state == NetworkInfo.State.SUSPENDED) { 2025 } else if (state == NetworkInfo.State.CONNECTED) { 2026 // handleConnect(info); 2027 } 2028 notifyLockdownVpn(null); 2029 break; 2030 } 2031 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 2032 info = (NetworkInfo) msg.obj; 2033 // TODO: Temporary allowing network configuration 2034 // change not resetting sockets. 2035 // @see bug/4455071 2036 /* 2037 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 2038 false); 2039 */ 2040 break; 2041 } 2042 } 2043 } 2044 } 2045 2046 private void handleAsyncChannelHalfConnect(Message msg) { 2047 AsyncChannel ac = (AsyncChannel) msg.obj; 2048 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2049 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2050 if (VDBG) log("NetworkFactory connected"); 2051 // A network factory has connected. Send it all current NetworkRequests. 2052 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2053 if (nri.isRequest == false) continue; 2054 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2055 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2056 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2057 } 2058 } else { 2059 loge("Error connecting NetworkFactory"); 2060 mNetworkFactoryInfos.remove(msg.obj); 2061 } 2062 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2063 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2064 if (VDBG) log("NetworkAgent connected"); 2065 // A network agent has requested a connection. Establish the connection. 2066 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2067 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2068 } else { 2069 loge("Error connecting NetworkAgent"); 2070 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2071 if (nai != null) { 2072 synchronized (mNetworkForNetId) { 2073 mNetworkForNetId.remove(nai.network.netId); 2074 } 2075 // Just in case. 2076 mLegacyTypeTracker.remove(nai); 2077 } 2078 } 2079 } 2080 } 2081 private void handleAsyncChannelDisconnected(Message msg) { 2082 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2083 if (nai != null) { 2084 if (DBG) { 2085 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2086 } 2087 // A network agent has disconnected. 2088 if (nai.created) { 2089 // Tell netd to clean up the configuration for this network 2090 // (routing rules, DNS, etc). 2091 try { 2092 mNetd.removeNetwork(nai.network.netId); 2093 } catch (Exception e) { 2094 loge("Exception removing network: " + e); 2095 } 2096 } 2097 // TODO - if we move the logic to the network agent (have them disconnect 2098 // because they lost all their requests or because their score isn't good) 2099 // then they would disconnect organically, report their new state and then 2100 // disconnect the channel. 2101 if (nai.networkInfo.isConnected()) { 2102 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2103 null, null); 2104 } 2105 if (isDefaultNetwork(nai)) { 2106 mDefaultInetConditionPublished = 0; 2107 } 2108 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2109 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2110 mNetworkAgentInfos.remove(msg.replyTo); 2111 updateClat(null, nai.linkProperties, nai); 2112 mLegacyTypeTracker.remove(nai); 2113 synchronized (mNetworkForNetId) { 2114 mNetworkForNetId.remove(nai.network.netId); 2115 } 2116 // Since we've lost the network, go through all the requests that 2117 // it was satisfying and see if any other factory can satisfy them. 2118 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2119 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2120 for (int i = 0; i < nai.networkRequests.size(); i++) { 2121 NetworkRequest request = nai.networkRequests.valueAt(i); 2122 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2123 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2124 if (DBG) { 2125 log("Checking for replacement network to handle request " + request ); 2126 } 2127 mNetworkForRequestId.remove(request.requestId); 2128 sendUpdatedScoreToFactories(request, 0); 2129 NetworkAgentInfo alternative = null; 2130 for (Map.Entry entry : mNetworkAgentInfos.entrySet()) { 2131 NetworkAgentInfo existing = (NetworkAgentInfo)entry.getValue(); 2132 if (existing.networkInfo.isConnected() && 2133 request.networkCapabilities.satisfiedByNetworkCapabilities( 2134 existing.networkCapabilities) && 2135 (alternative == null || 2136 alternative.getCurrentScore() < existing.getCurrentScore())) { 2137 alternative = existing; 2138 } 2139 } 2140 if (alternative != null) { 2141 if (DBG) log(" found replacement in " + alternative.name()); 2142 if (!toActivate.contains(alternative)) { 2143 toActivate.add(alternative); 2144 } 2145 } 2146 } 2147 } 2148 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2149 removeDataActivityTracking(nai); 2150 notifyLockdownVpn(nai); 2151 requestNetworkTransitionWakelock(nai.name()); 2152 } 2153 for (NetworkAgentInfo networkToActivate : toActivate) { 2154 networkToActivate.networkLingered.clear(); 2155 networkToActivate.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2156 rematchNetworkAndRequests(networkToActivate, false); 2157 } 2158 } 2159 } 2160 2161 // If this method proves to be too slow then we can maintain a separate 2162 // pendingIntent => NetworkRequestInfo map. 2163 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2164 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2165 Intent intent = pendingIntent.getIntent(); 2166 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2167 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2168 if (existingPendingIntent != null && 2169 existingPendingIntent.getIntent().filterEquals(intent)) { 2170 return entry.getValue(); 2171 } 2172 } 2173 return null; 2174 } 2175 2176 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2177 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2178 2179 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2180 if (existingRequest != null) { // remove the existing request. 2181 if (DBG) log("Replacing " + existingRequest.request + " with " 2182 + nri.request + " because their intents matched."); 2183 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2184 } 2185 handleRegisterNetworkRequest(msg); 2186 } 2187 2188 private void handleRegisterNetworkRequest(Message msg) { 2189 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2190 final NetworkCapabilities newCap = nri.request.networkCapabilities; 2191 int score = 0; 2192 2193 mNetworkRequests.put(nri.request, nri); 2194 2195 // Check for the best currently alive network that satisfies this request 2196 NetworkAgentInfo bestNetwork = null; 2197 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2198 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2199 if (newCap.satisfiedByNetworkCapabilities(network.networkCapabilities)) { 2200 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2201 if ((bestNetwork == null) || 2202 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2203 if (!nri.isRequest) { 2204 // Not setting bestNetwork here as a listening NetworkRequest may be 2205 // satisfied by multiple Networks. Instead the request is added to 2206 // each satisfying Network and notified about each. 2207 network.addRequest(nri.request); 2208 notifyNetworkCallback(network, nri); 2209 } else { 2210 bestNetwork = network; 2211 } 2212 } 2213 } 2214 } 2215 if (bestNetwork != null) { 2216 if (DBG) log("using " + bestNetwork.name()); 2217 if (bestNetwork.networkInfo.isConnected()) { 2218 // Cancel any lingering so the linger timeout doesn't teardown this network 2219 // even though we have a request for it. 2220 bestNetwork.networkLingered.clear(); 2221 bestNetwork.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2222 } 2223 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2224 bestNetwork.addRequest(nri.request); 2225 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2226 notifyNetworkCallback(bestNetwork, nri); 2227 score = bestNetwork.getCurrentScore(); 2228 if (nri.request.legacyType != TYPE_NONE) { 2229 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2230 } 2231 } 2232 2233 if (nri.isRequest) { 2234 if (DBG) log("sending new NetworkRequest to factories"); 2235 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2236 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2237 0, nri.request); 2238 } 2239 } 2240 } 2241 2242 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2243 int callingUid) { 2244 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2245 if (nri != null) { 2246 handleReleaseNetworkRequest(nri.request, callingUid); 2247 } 2248 } 2249 2250 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2251 NetworkRequestInfo nri = mNetworkRequests.get(request); 2252 if (nri != null) { 2253 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2254 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2255 return; 2256 } 2257 if (DBG) log("releasing NetworkRequest " + request); 2258 nri.unlinkDeathRecipient(); 2259 mNetworkRequests.remove(request); 2260 if (nri.isRequest) { 2261 // Find all networks that are satisfying this request and remove the request 2262 // from their request lists. 2263 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2264 if (nai.networkRequests.get(nri.request.requestId) != null) { 2265 nai.networkRequests.remove(nri.request.requestId); 2266 if (DBG) { 2267 log(" Removing from current network " + nai.name() + 2268 ", leaving " + nai.networkRequests.size() + 2269 " requests."); 2270 } 2271 // check if has any requests remaining and if not, 2272 // disconnect (unless it's a VPN). 2273 boolean keep = nai.isVPN(); 2274 for (int i = 0; i < nai.networkRequests.size() && !keep; i++) { 2275 NetworkRequest r = nai.networkRequests.valueAt(i); 2276 if (isRequest(r)) keep = true; 2277 } 2278 if (!keep) { 2279 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2280 nai.asyncChannel.disconnect(); 2281 } 2282 } 2283 } 2284 2285 // Maintain the illusion. When this request arrived, we might have pretended 2286 // that a network connected to serve it, even though the network was already 2287 // connected. Now that this request has gone away, we might have to pretend 2288 // that the network disconnected. LegacyTypeTracker will generate that 2289 // phantom disconnect for this type. 2290 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2291 if (nai != null) { 2292 mNetworkForRequestId.remove(nri.request.requestId); 2293 if (nri.request.legacyType != TYPE_NONE) { 2294 mLegacyTypeTracker.remove(nri.request.legacyType, nai); 2295 } 2296 } 2297 2298 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2299 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2300 nri.request); 2301 } 2302 } else { 2303 // listens don't have a singular affectedNetwork. Check all networks to see 2304 // if this listen request applies and remove it. 2305 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2306 nai.networkRequests.remove(nri.request.requestId); 2307 } 2308 } 2309 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2310 } 2311 } 2312 2313 private class InternalHandler extends Handler { 2314 public InternalHandler(Looper looper) { 2315 super(looper); 2316 } 2317 2318 @Override 2319 public void handleMessage(Message msg) { 2320 switch (msg.what) { 2321 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2322 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2323 String causedBy = null; 2324 synchronized (ConnectivityService.this) { 2325 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2326 mNetTransitionWakeLock.isHeld()) { 2327 mNetTransitionWakeLock.release(); 2328 causedBy = mNetTransitionWakeLockCausedBy; 2329 } else { 2330 break; 2331 } 2332 } 2333 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2334 log("Failed to find a new network - expiring NetTransition Wakelock"); 2335 } else { 2336 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2337 " cleared because we found a replacement network"); 2338 } 2339 break; 2340 } 2341 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2342 handleDeprecatedGlobalHttpProxy(); 2343 break; 2344 } 2345 case EVENT_SET_DEPENDENCY_MET: { 2346 boolean met = (msg.arg1 == ENABLED); 2347 handleSetDependencyMet(msg.arg2, met); 2348 break; 2349 } 2350 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2351 Intent intent = (Intent)msg.obj; 2352 sendStickyBroadcast(intent); 2353 break; 2354 } 2355 case EVENT_SET_POLICY_DATA_ENABLE: { 2356 final int networkType = msg.arg1; 2357 final boolean enabled = msg.arg2 == ENABLED; 2358 handleSetPolicyDataEnable(networkType, enabled); 2359 break; 2360 } 2361 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 2362 int tag = mEnableFailFastMobileDataTag.get(); 2363 if (msg.arg1 == tag) { 2364 MobileDataStateTracker mobileDst = 2365 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 2366 if (mobileDst != null) { 2367 mobileDst.setEnableFailFastMobileData(msg.arg2); 2368 } 2369 } else { 2370 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 2371 + " != tag:" + tag); 2372 } 2373 break; 2374 } 2375 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 2376 handleNetworkSamplingTimeout(); 2377 break; 2378 } 2379 case EVENT_PROXY_HAS_CHANGED: { 2380 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2381 break; 2382 } 2383 case EVENT_REGISTER_NETWORK_FACTORY: { 2384 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2385 break; 2386 } 2387 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2388 handleUnregisterNetworkFactory((Messenger)msg.obj); 2389 break; 2390 } 2391 case EVENT_REGISTER_NETWORK_AGENT: { 2392 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2393 break; 2394 } 2395 case EVENT_REGISTER_NETWORK_REQUEST: 2396 case EVENT_REGISTER_NETWORK_LISTENER: { 2397 handleRegisterNetworkRequest(msg); 2398 break; 2399 } 2400 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: { 2401 handleRegisterNetworkRequestWithIntent(msg); 2402 break; 2403 } 2404 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2405 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2406 break; 2407 } 2408 case EVENT_RELEASE_NETWORK_REQUEST: { 2409 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2410 break; 2411 } 2412 case EVENT_SYSTEM_READY: { 2413 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2414 nai.networkMonitor.systemReady = true; 2415 } 2416 break; 2417 } 2418 } 2419 } 2420 } 2421 2422 // javadoc from interface 2423 public int tether(String iface) { 2424 ConnectivityManager.enforceTetherChangePermission(mContext); 2425 if (isTetheringSupported()) { 2426 return mTethering.tether(iface); 2427 } else { 2428 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2429 } 2430 } 2431 2432 // javadoc from interface 2433 public int untether(String iface) { 2434 ConnectivityManager.enforceTetherChangePermission(mContext); 2435 2436 if (isTetheringSupported()) { 2437 return mTethering.untether(iface); 2438 } else { 2439 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2440 } 2441 } 2442 2443 // javadoc from interface 2444 public int getLastTetherError(String iface) { 2445 enforceTetherAccessPermission(); 2446 2447 if (isTetheringSupported()) { 2448 return mTethering.getLastTetherError(iface); 2449 } else { 2450 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2451 } 2452 } 2453 2454 // TODO - proper iface API for selection by property, inspection, etc 2455 public String[] getTetherableUsbRegexs() { 2456 enforceTetherAccessPermission(); 2457 if (isTetheringSupported()) { 2458 return mTethering.getTetherableUsbRegexs(); 2459 } else { 2460 return new String[0]; 2461 } 2462 } 2463 2464 public String[] getTetherableWifiRegexs() { 2465 enforceTetherAccessPermission(); 2466 if (isTetheringSupported()) { 2467 return mTethering.getTetherableWifiRegexs(); 2468 } else { 2469 return new String[0]; 2470 } 2471 } 2472 2473 public String[] getTetherableBluetoothRegexs() { 2474 enforceTetherAccessPermission(); 2475 if (isTetheringSupported()) { 2476 return mTethering.getTetherableBluetoothRegexs(); 2477 } else { 2478 return new String[0]; 2479 } 2480 } 2481 2482 public int setUsbTethering(boolean enable) { 2483 ConnectivityManager.enforceTetherChangePermission(mContext); 2484 if (isTetheringSupported()) { 2485 return mTethering.setUsbTethering(enable); 2486 } else { 2487 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2488 } 2489 } 2490 2491 // TODO - move iface listing, queries, etc to new module 2492 // javadoc from interface 2493 public String[] getTetherableIfaces() { 2494 enforceTetherAccessPermission(); 2495 return mTethering.getTetherableIfaces(); 2496 } 2497 2498 public String[] getTetheredIfaces() { 2499 enforceTetherAccessPermission(); 2500 return mTethering.getTetheredIfaces(); 2501 } 2502 2503 public String[] getTetheringErroredIfaces() { 2504 enforceTetherAccessPermission(); 2505 return mTethering.getErroredIfaces(); 2506 } 2507 2508 public String[] getTetheredDhcpRanges() { 2509 enforceConnectivityInternalPermission(); 2510 return mTethering.getTetheredDhcpRanges(); 2511 } 2512 2513 // if ro.tether.denied = true we default to no tethering 2514 // gservices could set the secure setting to 1 though to enable it on a build where it 2515 // had previously been turned off. 2516 public boolean isTetheringSupported() { 2517 enforceTetherAccessPermission(); 2518 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2519 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2520 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2521 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2522 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2523 mTethering.getTetherableWifiRegexs().length != 0 || 2524 mTethering.getTetherableBluetoothRegexs().length != 0) && 2525 mTethering.getUpstreamIfaceTypes().length != 0); 2526 } 2527 2528 // Called when we lose the default network and have no replacement yet. 2529 // This will automatically be cleared after X seconds or a new default network 2530 // becomes CONNECTED, whichever happens first. The timer is started by the 2531 // first caller and not restarted by subsequent callers. 2532 private void requestNetworkTransitionWakelock(String forWhom) { 2533 int serialNum = 0; 2534 synchronized (this) { 2535 if (mNetTransitionWakeLock.isHeld()) return; 2536 serialNum = ++mNetTransitionWakeLockSerialNumber; 2537 mNetTransitionWakeLock.acquire(); 2538 mNetTransitionWakeLockCausedBy = forWhom; 2539 } 2540 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2541 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2542 mNetTransitionWakeLockTimeout); 2543 return; 2544 } 2545 2546 // 100 percent is full good, 0 is full bad. 2547 public void reportInetCondition(int networkType, int percentage) { 2548 if (percentage > 50) return; // don't handle good network reports 2549 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2550 if (nai != null) reportBadNetwork(nai.network); 2551 } 2552 2553 public void reportBadNetwork(Network network) { 2554 enforceAccessPermission(); 2555 enforceInternetPermission(); 2556 2557 if (network == null) return; 2558 2559 final int uid = Binder.getCallingUid(); 2560 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2561 if (nai == null) return; 2562 if (DBG) log("reportBadNetwork(" + nai.name() + ") by " + uid); 2563 synchronized (nai) { 2564 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2565 // which isn't meant to work on uncreated networks. 2566 if (!nai.created) return; 2567 2568 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2569 2570 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2571 } 2572 } 2573 2574 public ProxyInfo getProxy() { 2575 // this information is already available as a world read/writable jvm property 2576 // so this API change wouldn't have a benifit. It also breaks the passing 2577 // of proxy info to all the JVMs. 2578 // enforceAccessPermission(); 2579 synchronized (mProxyLock) { 2580 ProxyInfo ret = mGlobalProxy; 2581 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2582 return ret; 2583 } 2584 } 2585 2586 public void setGlobalProxy(ProxyInfo proxyProperties) { 2587 enforceConnectivityInternalPermission(); 2588 2589 synchronized (mProxyLock) { 2590 if (proxyProperties == mGlobalProxy) return; 2591 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2592 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2593 2594 String host = ""; 2595 int port = 0; 2596 String exclList = ""; 2597 String pacFileUrl = ""; 2598 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2599 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2600 if (!proxyProperties.isValid()) { 2601 if (DBG) 2602 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2603 return; 2604 } 2605 mGlobalProxy = new ProxyInfo(proxyProperties); 2606 host = mGlobalProxy.getHost(); 2607 port = mGlobalProxy.getPort(); 2608 exclList = mGlobalProxy.getExclusionListAsString(); 2609 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2610 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2611 } 2612 } else { 2613 mGlobalProxy = null; 2614 } 2615 ContentResolver res = mContext.getContentResolver(); 2616 final long token = Binder.clearCallingIdentity(); 2617 try { 2618 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2619 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2620 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2621 exclList); 2622 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2623 } finally { 2624 Binder.restoreCallingIdentity(token); 2625 } 2626 2627 if (mGlobalProxy == null) { 2628 proxyProperties = mDefaultProxy; 2629 } 2630 sendProxyBroadcast(proxyProperties); 2631 } 2632 } 2633 2634 private void loadGlobalProxy() { 2635 ContentResolver res = mContext.getContentResolver(); 2636 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2637 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2638 String exclList = Settings.Global.getString(res, 2639 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2640 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2641 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2642 ProxyInfo proxyProperties; 2643 if (!TextUtils.isEmpty(pacFileUrl)) { 2644 proxyProperties = new ProxyInfo(pacFileUrl); 2645 } else { 2646 proxyProperties = new ProxyInfo(host, port, exclList); 2647 } 2648 if (!proxyProperties.isValid()) { 2649 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2650 return; 2651 } 2652 2653 synchronized (mProxyLock) { 2654 mGlobalProxy = proxyProperties; 2655 } 2656 } 2657 } 2658 2659 public ProxyInfo getGlobalProxy() { 2660 // this information is already available as a world read/writable jvm property 2661 // so this API change wouldn't have a benifit. It also breaks the passing 2662 // of proxy info to all the JVMs. 2663 // enforceAccessPermission(); 2664 synchronized (mProxyLock) { 2665 return mGlobalProxy; 2666 } 2667 } 2668 2669 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2670 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2671 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2672 proxy = null; 2673 } 2674 synchronized (mProxyLock) { 2675 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2676 if (mDefaultProxy == proxy) return; // catches repeated nulls 2677 if (proxy != null && !proxy.isValid()) { 2678 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2679 return; 2680 } 2681 2682 // This call could be coming from the PacManager, containing the port of the local 2683 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2684 // global (to get the correct local port), and send a broadcast. 2685 // TODO: Switch PacManager to have its own message to send back rather than 2686 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2687 if ((mGlobalProxy != null) && (proxy != null) 2688 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2689 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2690 mGlobalProxy = proxy; 2691 sendProxyBroadcast(mGlobalProxy); 2692 return; 2693 } 2694 mDefaultProxy = proxy; 2695 2696 if (mGlobalProxy != null) return; 2697 if (!mDefaultProxyDisabled) { 2698 sendProxyBroadcast(proxy); 2699 } 2700 } 2701 } 2702 2703 private void handleDeprecatedGlobalHttpProxy() { 2704 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2705 Settings.Global.HTTP_PROXY); 2706 if (!TextUtils.isEmpty(proxy)) { 2707 String data[] = proxy.split(":"); 2708 if (data.length == 0) { 2709 return; 2710 } 2711 2712 String proxyHost = data[0]; 2713 int proxyPort = 8080; 2714 if (data.length > 1) { 2715 try { 2716 proxyPort = Integer.parseInt(data[1]); 2717 } catch (NumberFormatException e) { 2718 return; 2719 } 2720 } 2721 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2722 setGlobalProxy(p); 2723 } 2724 } 2725 2726 private void sendProxyBroadcast(ProxyInfo proxy) { 2727 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2728 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2729 if (DBG) log("sending Proxy Broadcast for " + proxy); 2730 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2731 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2732 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2733 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2734 final long ident = Binder.clearCallingIdentity(); 2735 try { 2736 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2737 } finally { 2738 Binder.restoreCallingIdentity(ident); 2739 } 2740 } 2741 2742 private static class SettingsObserver extends ContentObserver { 2743 private int mWhat; 2744 private Handler mHandler; 2745 SettingsObserver(Handler handler, int what) { 2746 super(handler); 2747 mHandler = handler; 2748 mWhat = what; 2749 } 2750 2751 void observe(Context context) { 2752 ContentResolver resolver = context.getContentResolver(); 2753 resolver.registerContentObserver(Settings.Global.getUriFor( 2754 Settings.Global.HTTP_PROXY), false, this); 2755 } 2756 2757 @Override 2758 public void onChange(boolean selfChange) { 2759 mHandler.obtainMessage(mWhat).sendToTarget(); 2760 } 2761 } 2762 2763 private static void log(String s) { 2764 Slog.d(TAG, s); 2765 } 2766 2767 private static void loge(String s) { 2768 Slog.e(TAG, s); 2769 } 2770 2771 private static <T> T checkNotNull(T value, String message) { 2772 if (value == null) { 2773 throw new NullPointerException(message); 2774 } 2775 return value; 2776 } 2777 2778 /** 2779 * Prepare for a VPN application. 2780 * Permissions are checked in Vpn class. 2781 * @hide 2782 */ 2783 @Override 2784 public boolean prepareVpn(String oldPackage, String newPackage) { 2785 throwIfLockdownEnabled(); 2786 int user = UserHandle.getUserId(Binder.getCallingUid()); 2787 synchronized(mVpns) { 2788 return mVpns.get(user).prepare(oldPackage, newPackage); 2789 } 2790 } 2791 2792 /** 2793 * Set whether the current VPN package has the ability to launch VPNs without 2794 * user intervention. This method is used by system-privileged apps. 2795 * Permissions are checked in Vpn class. 2796 * @hide 2797 */ 2798 @Override 2799 public void setVpnPackageAuthorization(boolean authorized) { 2800 int user = UserHandle.getUserId(Binder.getCallingUid()); 2801 synchronized(mVpns) { 2802 mVpns.get(user).setPackageAuthorization(authorized); 2803 } 2804 } 2805 2806 /** 2807 * Configure a TUN interface and return its file descriptor. Parameters 2808 * are encoded and opaque to this class. This method is used by VpnBuilder 2809 * and not available in ConnectivityManager. Permissions are checked in 2810 * Vpn class. 2811 * @hide 2812 */ 2813 @Override 2814 public ParcelFileDescriptor establishVpn(VpnConfig config) { 2815 throwIfLockdownEnabled(); 2816 int user = UserHandle.getUserId(Binder.getCallingUid()); 2817 synchronized(mVpns) { 2818 return mVpns.get(user).establish(config); 2819 } 2820 } 2821 2822 /** 2823 * Start legacy VPN, controlling native daemons as needed. Creates a 2824 * secondary thread to perform connection work, returning quickly. 2825 */ 2826 @Override 2827 public void startLegacyVpn(VpnProfile profile) { 2828 throwIfLockdownEnabled(); 2829 final LinkProperties egress = getActiveLinkProperties(); 2830 if (egress == null) { 2831 throw new IllegalStateException("Missing active network connection"); 2832 } 2833 int user = UserHandle.getUserId(Binder.getCallingUid()); 2834 synchronized(mVpns) { 2835 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 2836 } 2837 } 2838 2839 /** 2840 * Return the information of the ongoing legacy VPN. This method is used 2841 * by VpnSettings and not available in ConnectivityManager. Permissions 2842 * are checked in Vpn class. 2843 * @hide 2844 */ 2845 @Override 2846 public LegacyVpnInfo getLegacyVpnInfo() { 2847 throwIfLockdownEnabled(); 2848 int user = UserHandle.getUserId(Binder.getCallingUid()); 2849 synchronized(mVpns) { 2850 return mVpns.get(user).getLegacyVpnInfo(); 2851 } 2852 } 2853 2854 /** 2855 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 2856 * not available in ConnectivityManager. 2857 * Permissions are checked in Vpn class. 2858 * @hide 2859 */ 2860 @Override 2861 public VpnConfig getVpnConfig() { 2862 int user = UserHandle.getUserId(Binder.getCallingUid()); 2863 synchronized(mVpns) { 2864 return mVpns.get(user).getVpnConfig(); 2865 } 2866 } 2867 2868 @Override 2869 public boolean updateLockdownVpn() { 2870 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 2871 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 2872 return false; 2873 } 2874 2875 // Tear down existing lockdown if profile was removed 2876 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 2877 if (mLockdownEnabled) { 2878 if (!mKeyStore.isUnlocked()) { 2879 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 2880 return false; 2881 } 2882 2883 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 2884 final VpnProfile profile = VpnProfile.decode( 2885 profileName, mKeyStore.get(Credentials.VPN + profileName)); 2886 int user = UserHandle.getUserId(Binder.getCallingUid()); 2887 synchronized(mVpns) { 2888 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 2889 profile)); 2890 } 2891 } else { 2892 setLockdownTracker(null); 2893 } 2894 2895 return true; 2896 } 2897 2898 /** 2899 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 2900 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 2901 */ 2902 private void setLockdownTracker(LockdownVpnTracker tracker) { 2903 // Shutdown any existing tracker 2904 final LockdownVpnTracker existing = mLockdownTracker; 2905 mLockdownTracker = null; 2906 if (existing != null) { 2907 existing.shutdown(); 2908 } 2909 2910 try { 2911 if (tracker != null) { 2912 mNetd.setFirewallEnabled(true); 2913 mNetd.setFirewallInterfaceRule("lo", true); 2914 mLockdownTracker = tracker; 2915 mLockdownTracker.init(); 2916 } else { 2917 mNetd.setFirewallEnabled(false); 2918 } 2919 } catch (RemoteException e) { 2920 // ignored; NMS lives inside system_server 2921 } 2922 } 2923 2924 private void throwIfLockdownEnabled() { 2925 if (mLockdownEnabled) { 2926 throw new IllegalStateException("Unavailable in lockdown mode"); 2927 } 2928 } 2929 2930 public void supplyMessenger(int networkType, Messenger messenger) { 2931 enforceConnectivityInternalPermission(); 2932 2933 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 2934 mNetTrackers[networkType].supplyMessenger(messenger); 2935 } 2936 } 2937 2938 public int findConnectionTypeForIface(String iface) { 2939 enforceConnectivityInternalPermission(); 2940 2941 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 2942 2943 synchronized(mNetworkForNetId) { 2944 for (int i = 0; i < mNetworkForNetId.size(); i++) { 2945 NetworkAgentInfo nai = mNetworkForNetId.valueAt(i); 2946 LinkProperties lp = nai.linkProperties; 2947 if (lp != null && iface.equals(lp.getInterfaceName()) && nai.networkInfo != null) { 2948 return nai.networkInfo.getType(); 2949 } 2950 } 2951 } 2952 return ConnectivityManager.TYPE_NONE; 2953 } 2954 2955 /** 2956 * Have mobile data fail fast if enabled. 2957 * 2958 * @param enabled DctConstants.ENABLED/DISABLED 2959 */ 2960 private void setEnableFailFastMobileData(int enabled) { 2961 int tag; 2962 2963 if (enabled == DctConstants.ENABLED) { 2964 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 2965 } else { 2966 tag = mEnableFailFastMobileDataTag.get(); 2967 } 2968 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 2969 enabled)); 2970 } 2971 2972 @Override 2973 public int checkMobileProvisioning(int suggestedTimeOutMs) { 2974 // TODO: Remove? Any reason to trigger a provisioning check? 2975 return -1; 2976 } 2977 2978 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 2979 private volatile boolean mIsNotificationVisible = false; 2980 2981 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 2982 if (DBG) { 2983 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 2984 + " action=" + action); 2985 } 2986 Intent intent = new Intent(action); 2987 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 2988 // Concatenate the range of types onto the range of NetIDs. 2989 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 2990 setProvNotificationVisibleIntent(visible, id, networkType, null, pendingIntent); 2991 } 2992 2993 /** 2994 * Show or hide network provisioning notificaitons. 2995 * 2996 * @param id an identifier that uniquely identifies this notification. This must match 2997 * between show and hide calls. We use the NetID value but for legacy callers 2998 * we concatenate the range of types with the range of NetIDs. 2999 */ 3000 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 3001 String extraInfo, PendingIntent intent) { 3002 if (DBG) { 3003 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 3004 networkType + " extraInfo=" + extraInfo); 3005 } 3006 3007 Resources r = Resources.getSystem(); 3008 NotificationManager notificationManager = (NotificationManager) mContext 3009 .getSystemService(Context.NOTIFICATION_SERVICE); 3010 3011 if (visible) { 3012 CharSequence title; 3013 CharSequence details; 3014 int icon; 3015 Notification notification = new Notification(); 3016 switch (networkType) { 3017 case ConnectivityManager.TYPE_WIFI: 3018 title = r.getString(R.string.wifi_available_sign_in, 0); 3019 details = r.getString(R.string.network_available_sign_in_detailed, 3020 extraInfo); 3021 icon = R.drawable.stat_notify_wifi_in_range; 3022 break; 3023 case ConnectivityManager.TYPE_MOBILE: 3024 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3025 title = r.getString(R.string.network_available_sign_in, 0); 3026 // TODO: Change this to pull from NetworkInfo once a printable 3027 // name has been added to it 3028 details = mTelephonyManager.getNetworkOperatorName(); 3029 icon = R.drawable.stat_notify_rssi_in_range; 3030 break; 3031 default: 3032 title = r.getString(R.string.network_available_sign_in, 0); 3033 details = r.getString(R.string.network_available_sign_in_detailed, 3034 extraInfo); 3035 icon = R.drawable.stat_notify_rssi_in_range; 3036 break; 3037 } 3038 3039 notification.when = 0; 3040 notification.icon = icon; 3041 notification.flags = Notification.FLAG_AUTO_CANCEL; 3042 notification.tickerText = title; 3043 notification.color = mContext.getResources().getColor( 3044 com.android.internal.R.color.system_notification_accent_color); 3045 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3046 notification.contentIntent = intent; 3047 3048 try { 3049 notificationManager.notify(NOTIFICATION_ID, id, notification); 3050 } catch (NullPointerException npe) { 3051 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 3052 npe.printStackTrace(); 3053 } 3054 } else { 3055 try { 3056 notificationManager.cancel(NOTIFICATION_ID, id); 3057 } catch (NullPointerException npe) { 3058 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 3059 npe.printStackTrace(); 3060 } 3061 } 3062 mIsNotificationVisible = visible; 3063 } 3064 3065 /** Location to an updatable file listing carrier provisioning urls. 3066 * An example: 3067 * 3068 * <?xml version="1.0" encoding="utf-8"?> 3069 * <provisioningUrls> 3070 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3071 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3072 * </provisioningUrls> 3073 */ 3074 private static final String PROVISIONING_URL_PATH = 3075 "/data/misc/radio/provisioning_urls.xml"; 3076 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3077 3078 /** XML tag for root element. */ 3079 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3080 /** XML tag for individual url */ 3081 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3082 /** XML tag for redirected url */ 3083 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3084 /** XML attribute for mcc */ 3085 private static final String ATTR_MCC = "mcc"; 3086 /** XML attribute for mnc */ 3087 private static final String ATTR_MNC = "mnc"; 3088 3089 private static final int REDIRECTED_PROVISIONING = 1; 3090 private static final int PROVISIONING = 2; 3091 3092 private String getProvisioningUrlBaseFromFile(int type) { 3093 FileReader fileReader = null; 3094 XmlPullParser parser = null; 3095 Configuration config = mContext.getResources().getConfiguration(); 3096 String tagType; 3097 3098 switch (type) { 3099 case PROVISIONING: 3100 tagType = TAG_PROVISIONING_URL; 3101 break; 3102 case REDIRECTED_PROVISIONING: 3103 tagType = TAG_REDIRECTED_URL; 3104 break; 3105 default: 3106 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3107 type); 3108 } 3109 3110 try { 3111 fileReader = new FileReader(mProvisioningUrlFile); 3112 parser = Xml.newPullParser(); 3113 parser.setInput(fileReader); 3114 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3115 3116 while (true) { 3117 XmlUtils.nextElement(parser); 3118 3119 String element = parser.getName(); 3120 if (element == null) break; 3121 3122 if (element.equals(tagType)) { 3123 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3124 try { 3125 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3126 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3127 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3128 parser.next(); 3129 if (parser.getEventType() == XmlPullParser.TEXT) { 3130 return parser.getText(); 3131 } 3132 } 3133 } 3134 } catch (NumberFormatException e) { 3135 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3136 } 3137 } 3138 } 3139 return null; 3140 } catch (FileNotFoundException e) { 3141 loge("Carrier Provisioning Urls file not found"); 3142 } catch (XmlPullParserException e) { 3143 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3144 } catch (IOException e) { 3145 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3146 } finally { 3147 if (fileReader != null) { 3148 try { 3149 fileReader.close(); 3150 } catch (IOException e) {} 3151 } 3152 } 3153 return null; 3154 } 3155 3156 @Override 3157 public String getMobileRedirectedProvisioningUrl() { 3158 enforceConnectivityInternalPermission(); 3159 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3160 if (TextUtils.isEmpty(url)) { 3161 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3162 } 3163 return url; 3164 } 3165 3166 @Override 3167 public String getMobileProvisioningUrl() { 3168 enforceConnectivityInternalPermission(); 3169 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3170 if (TextUtils.isEmpty(url)) { 3171 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3172 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3173 } else { 3174 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3175 } 3176 // populate the iccid, imei and phone number in the provisioning url. 3177 if (!TextUtils.isEmpty(url)) { 3178 String phoneNumber = mTelephonyManager.getLine1Number(); 3179 if (TextUtils.isEmpty(phoneNumber)) { 3180 phoneNumber = "0000000000"; 3181 } 3182 url = String.format(url, 3183 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3184 mTelephonyManager.getDeviceId() /* IMEI */, 3185 phoneNumber /* Phone numer */); 3186 } 3187 3188 return url; 3189 } 3190 3191 @Override 3192 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3193 String action) { 3194 enforceConnectivityInternalPermission(); 3195 final long ident = Binder.clearCallingIdentity(); 3196 try { 3197 setProvNotificationVisible(visible, networkType, action); 3198 } finally { 3199 Binder.restoreCallingIdentity(ident); 3200 } 3201 } 3202 3203 @Override 3204 public void setAirplaneMode(boolean enable) { 3205 enforceConnectivityInternalPermission(); 3206 final long ident = Binder.clearCallingIdentity(); 3207 try { 3208 final ContentResolver cr = mContext.getContentResolver(); 3209 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3210 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3211 intent.putExtra("state", enable); 3212 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3213 } finally { 3214 Binder.restoreCallingIdentity(ident); 3215 } 3216 } 3217 3218 private void onUserStart(int userId) { 3219 synchronized(mVpns) { 3220 Vpn userVpn = mVpns.get(userId); 3221 if (userVpn != null) { 3222 loge("Starting user already has a VPN"); 3223 return; 3224 } 3225 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, this, userId); 3226 mVpns.put(userId, userVpn); 3227 } 3228 } 3229 3230 private void onUserStop(int userId) { 3231 synchronized(mVpns) { 3232 Vpn userVpn = mVpns.get(userId); 3233 if (userVpn == null) { 3234 loge("Stopping user has no VPN"); 3235 return; 3236 } 3237 mVpns.delete(userId); 3238 } 3239 } 3240 3241 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3242 @Override 3243 public void onReceive(Context context, Intent intent) { 3244 final String action = intent.getAction(); 3245 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3246 if (userId == UserHandle.USER_NULL) return; 3247 3248 if (Intent.ACTION_USER_STARTING.equals(action)) { 3249 onUserStart(userId); 3250 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3251 onUserStop(userId); 3252 } 3253 } 3254 }; 3255 3256 /* Infrastructure for network sampling */ 3257 3258 private void handleNetworkSamplingTimeout() { 3259 3260 if (SAMPLE_DBG) log("Sampling interval elapsed, updating statistics .."); 3261 3262 // initialize list of interfaces .. 3263 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 3264 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 3265 for (NetworkStateTracker tracker : mNetTrackers) { 3266 if (tracker != null) { 3267 String ifaceName = tracker.getNetworkInterfaceName(); 3268 if (ifaceName != null) { 3269 mapIfaceToSample.put(ifaceName, null); 3270 } 3271 } 3272 } 3273 3274 // Read samples for all interfaces 3275 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 3276 3277 // process samples for all networks 3278 for (NetworkStateTracker tracker : mNetTrackers) { 3279 if (tracker != null) { 3280 String ifaceName = tracker.getNetworkInterfaceName(); 3281 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 3282 if (ss != null) { 3283 // end the previous sampling cycle 3284 tracker.stopSampling(ss); 3285 // start a new sampling cycle .. 3286 tracker.startSampling(ss); 3287 } 3288 } 3289 } 3290 3291 if (SAMPLE_DBG) log("Done."); 3292 3293 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 3294 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 3295 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 3296 3297 if (SAMPLE_DBG) { 3298 log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 3299 } 3300 3301 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 3302 } 3303 3304 /** 3305 * Sets a network sampling alarm. 3306 */ 3307 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 3308 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 3309 int alarmType; 3310 if (Resources.getSystem().getBoolean( 3311 R.bool.config_networkSamplingWakesDevice)) { 3312 alarmType = AlarmManager.ELAPSED_REALTIME_WAKEUP; 3313 } else { 3314 alarmType = AlarmManager.ELAPSED_REALTIME; 3315 } 3316 mAlarmManager.set(alarmType, wakeupTime, intent); 3317 } 3318 3319 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3320 new HashMap<Messenger, NetworkFactoryInfo>(); 3321 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3322 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3323 3324 private static class NetworkFactoryInfo { 3325 public final String name; 3326 public final Messenger messenger; 3327 public final AsyncChannel asyncChannel; 3328 3329 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3330 this.name = name; 3331 this.messenger = messenger; 3332 this.asyncChannel = asyncChannel; 3333 } 3334 } 3335 3336 /** 3337 * Tracks info about the requester. 3338 * Also used to notice when the calling process dies so we can self-expire 3339 */ 3340 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3341 static final boolean REQUEST = true; 3342 static final boolean LISTEN = false; 3343 3344 final NetworkRequest request; 3345 final PendingIntent mPendingIntent; 3346 private final IBinder mBinder; 3347 final int mPid; 3348 final int mUid; 3349 final Messenger messenger; 3350 final boolean isRequest; 3351 3352 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3353 request = r; 3354 mPendingIntent = pi; 3355 messenger = null; 3356 mBinder = null; 3357 mPid = getCallingPid(); 3358 mUid = getCallingUid(); 3359 this.isRequest = isRequest; 3360 } 3361 3362 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3363 super(); 3364 messenger = m; 3365 request = r; 3366 mBinder = binder; 3367 mPid = getCallingPid(); 3368 mUid = getCallingUid(); 3369 this.isRequest = isRequest; 3370 mPendingIntent = null; 3371 3372 try { 3373 mBinder.linkToDeath(this, 0); 3374 } catch (RemoteException e) { 3375 binderDied(); 3376 } 3377 } 3378 3379 void unlinkDeathRecipient() { 3380 if (mBinder != null) { 3381 mBinder.unlinkToDeath(this, 0); 3382 } 3383 } 3384 3385 public void binderDied() { 3386 log("ConnectivityService NetworkRequestInfo binderDied(" + 3387 request + ", " + mBinder + ")"); 3388 releaseNetworkRequest(request); 3389 } 3390 3391 public String toString() { 3392 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3393 mPid + " for " + request + 3394 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3395 } 3396 } 3397 3398 @Override 3399 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3400 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3401 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3402 enforceNetworkRequestPermissions(networkCapabilities); 3403 enforceMeteredApnPolicy(networkCapabilities); 3404 3405 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3406 throw new IllegalArgumentException("Bad timeout specified"); 3407 } 3408 3409 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3410 nextNetworkRequestId()); 3411 if (DBG) log("requestNetwork for " + networkRequest); 3412 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3413 NetworkRequestInfo.REQUEST); 3414 3415 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3416 if (timeoutMs > 0) { 3417 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3418 nri), timeoutMs); 3419 } 3420 return networkRequest; 3421 } 3422 3423 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3424 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 3425 == false) { 3426 enforceConnectivityInternalPermission(); 3427 } else { 3428 enforceChangePermission(); 3429 } 3430 } 3431 3432 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3433 // if UID is restricted, don't allow them to bring up metered APNs 3434 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED) 3435 == false) { 3436 final int uidRules; 3437 final int uid = Binder.getCallingUid(); 3438 synchronized(mRulesLock) { 3439 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3440 } 3441 if ((uidRules & RULE_REJECT_METERED) != 0) { 3442 // we could silently fail or we can filter the available nets to only give 3443 // them those they have access to. Chose the more useful 3444 networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED); 3445 } 3446 } 3447 } 3448 3449 @Override 3450 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3451 PendingIntent operation) { 3452 checkNotNull(operation, "PendingIntent cannot be null."); 3453 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3454 enforceNetworkRequestPermissions(networkCapabilities); 3455 enforceMeteredApnPolicy(networkCapabilities); 3456 3457 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3458 nextNetworkRequestId()); 3459 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3460 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3461 NetworkRequestInfo.REQUEST); 3462 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3463 nri)); 3464 return networkRequest; 3465 } 3466 3467 @Override 3468 public void releasePendingNetworkRequest(PendingIntent operation) { 3469 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3470 getCallingUid(), 0, operation)); 3471 } 3472 3473 @Override 3474 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3475 Messenger messenger, IBinder binder) { 3476 enforceAccessPermission(); 3477 3478 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3479 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3480 if (DBG) log("listenForNetwork for " + networkRequest); 3481 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3482 NetworkRequestInfo.LISTEN); 3483 3484 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3485 return networkRequest; 3486 } 3487 3488 @Override 3489 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3490 PendingIntent operation) { 3491 } 3492 3493 @Override 3494 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3495 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3496 0, networkRequest)); 3497 } 3498 3499 @Override 3500 public void registerNetworkFactory(Messenger messenger, String name) { 3501 enforceConnectivityInternalPermission(); 3502 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3503 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3504 } 3505 3506 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3507 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3508 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3509 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3510 } 3511 3512 @Override 3513 public void unregisterNetworkFactory(Messenger messenger) { 3514 enforceConnectivityInternalPermission(); 3515 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3516 } 3517 3518 private void handleUnregisterNetworkFactory(Messenger messenger) { 3519 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3520 if (nfi == null) { 3521 loge("Failed to find Messenger in unregisterNetworkFactory"); 3522 return; 3523 } 3524 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3525 } 3526 3527 /** 3528 * NetworkAgentInfo supporting a request by requestId. 3529 * These have already been vetted (their Capabilities satisfy the request) 3530 * and the are the highest scored network available. 3531 * the are keyed off the Requests requestId. 3532 */ 3533 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3534 new SparseArray<NetworkAgentInfo>(); 3535 3536 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3537 new SparseArray<NetworkAgentInfo>(); 3538 3539 // NetworkAgentInfo keyed off its connecting messenger 3540 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3541 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3542 new HashMap<Messenger, NetworkAgentInfo>(); 3543 3544 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 3545 private final NetworkRequest mDefaultRequest; 3546 3547 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3548 return mNetworkForRequestId.get(mDefaultRequest.requestId) == nai; 3549 } 3550 3551 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3552 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3553 int currentScore, NetworkMisc networkMisc) { 3554 enforceConnectivityInternalPermission(); 3555 3556 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 3557 // satisfies mDefaultRequest. 3558 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3559 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 3560 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler, 3561 new NetworkMisc(networkMisc), mDefaultRequest); 3562 synchronized (this) { 3563 nai.networkMonitor.systemReady = mSystemReady; 3564 } 3565 if (DBG) log("registerNetworkAgent " + nai); 3566 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3567 } 3568 3569 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3570 if (VDBG) log("Got NetworkAgent Messenger"); 3571 mNetworkAgentInfos.put(na.messenger, na); 3572 assignNextNetId(na); 3573 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3574 NetworkInfo networkInfo = na.networkInfo; 3575 na.networkInfo = null; 3576 updateNetworkInfo(na, networkInfo); 3577 } 3578 3579 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3580 LinkProperties newLp = networkAgent.linkProperties; 3581 int netId = networkAgent.network.netId; 3582 3583 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3584 // we do anything else, make sure its LinkProperties are accurate. 3585 if (networkAgent.clatd != null) { 3586 networkAgent.clatd.fixupLinkProperties(oldLp); 3587 } 3588 3589 updateInterfaces(newLp, oldLp, netId); 3590 updateMtu(newLp, oldLp); 3591 // TODO - figure out what to do for clat 3592// for (LinkProperties lp : newLp.getStackedLinks()) { 3593// updateMtu(lp, null); 3594// } 3595 updateTcpBufferSizes(networkAgent); 3596 3597 // TODO: deprecate and remove mDefaultDns when we can do so safely. 3598 // For now, use it only when the network has Internet access. http://b/18327075 3599 final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability( 3600 NetworkCapabilities.NET_CAPABILITY_INTERNET); 3601 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3602 updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns); 3603 3604 updateClat(newLp, oldLp, networkAgent); 3605 if (isDefaultNetwork(networkAgent)) handleApplyDefaultProxy(newLp.getHttpProxy()); 3606 // TODO - move this check to cover the whole function 3607 if (!Objects.equals(newLp, oldLp)) { 3608 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3609 } 3610 } 3611 3612 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3613 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3614 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3615 3616 if (!wasRunningClat && shouldRunClat) { 3617 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3618 nai.clatd.start(); 3619 } else if (wasRunningClat && !shouldRunClat) { 3620 nai.clatd.stop(); 3621 } 3622 } 3623 3624 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3625 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3626 if (oldLp != null) { 3627 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3628 } else if (newLp != null) { 3629 interfaceDiff.added = newLp.getAllInterfaceNames(); 3630 } 3631 for (String iface : interfaceDiff.added) { 3632 try { 3633 if (DBG) log("Adding iface " + iface + " to network " + netId); 3634 mNetd.addInterfaceToNetwork(iface, netId); 3635 } catch (Exception e) { 3636 loge("Exception adding interface: " + e); 3637 } 3638 } 3639 for (String iface : interfaceDiff.removed) { 3640 try { 3641 if (DBG) log("Removing iface " + iface + " from network " + netId); 3642 mNetd.removeInterfaceFromNetwork(iface, netId); 3643 } catch (Exception e) { 3644 loge("Exception removing interface: " + e); 3645 } 3646 } 3647 } 3648 3649 /** 3650 * Have netd update routes from oldLp to newLp. 3651 * @return true if routes changed between oldLp and newLp 3652 */ 3653 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3654 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3655 if (oldLp != null) { 3656 routeDiff = oldLp.compareAllRoutes(newLp); 3657 } else if (newLp != null) { 3658 routeDiff.added = newLp.getAllRoutes(); 3659 } 3660 3661 // add routes before removing old in case it helps with continuous connectivity 3662 3663 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3664 for (RouteInfo route : routeDiff.added) { 3665 if (route.hasGateway()) continue; 3666 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3667 try { 3668 mNetd.addRoute(netId, route); 3669 } catch (Exception e) { 3670 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3671 loge("Exception in addRoute for non-gateway: " + e); 3672 } 3673 } 3674 } 3675 for (RouteInfo route : routeDiff.added) { 3676 if (route.hasGateway() == false) continue; 3677 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3678 try { 3679 mNetd.addRoute(netId, route); 3680 } catch (Exception e) { 3681 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3682 loge("Exception in addRoute for gateway: " + e); 3683 } 3684 } 3685 } 3686 3687 for (RouteInfo route : routeDiff.removed) { 3688 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3689 try { 3690 mNetd.removeRoute(netId, route); 3691 } catch (Exception e) { 3692 loge("Exception in removeRoute: " + e); 3693 } 3694 } 3695 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3696 } 3697 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, 3698 boolean flush, boolean useDefaultDns) { 3699 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 3700 Collection<InetAddress> dnses = newLp.getDnsServers(); 3701 if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) { 3702 dnses = new ArrayList(); 3703 dnses.add(mDefaultDns); 3704 if (DBG) { 3705 loge("no dns provided for netId " + netId + ", so using defaults"); 3706 } 3707 } 3708 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 3709 try { 3710 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 3711 newLp.getDomains()); 3712 } catch (Exception e) { 3713 loge("Exception in setDnsServersForNetwork: " + e); 3714 } 3715 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 3716 if (defaultNai != null && defaultNai.network.netId == netId) { 3717 setDefaultDnsSystemProperties(dnses); 3718 } 3719 flushVmDnsCache(); 3720 } else if (flush) { 3721 try { 3722 mNetd.flushNetworkDnsCache(netId); 3723 } catch (Exception e) { 3724 loge("Exception in flushNetworkDnsCache: " + e); 3725 } 3726 flushVmDnsCache(); 3727 } 3728 } 3729 3730 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 3731 int last = 0; 3732 for (InetAddress dns : dnses) { 3733 ++last; 3734 String key = "net.dns" + last; 3735 String value = dns.getHostAddress(); 3736 SystemProperties.set(key, value); 3737 } 3738 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 3739 String key = "net.dns" + i; 3740 SystemProperties.set(key, ""); 3741 } 3742 mNumDnsEntries = last; 3743 } 3744 3745 3746 private void updateCapabilities(NetworkAgentInfo networkAgent, 3747 NetworkCapabilities networkCapabilities) { 3748 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 3749 synchronized (networkAgent) { 3750 networkAgent.networkCapabilities = networkCapabilities; 3751 } 3752 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 3753 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 3754 } 3755 } 3756 3757 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 3758 for (int i = 0; i < nai.networkRequests.size(); i++) { 3759 NetworkRequest nr = nai.networkRequests.valueAt(i); 3760 // Don't send listening requests to factories. b/17393458 3761 if (!isRequest(nr)) continue; 3762 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 3763 } 3764 } 3765 3766 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 3767 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 3768 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3769 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 3770 networkRequest); 3771 } 3772 } 3773 3774 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 3775 int notificationType) { 3776 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE) { 3777 Intent intent = new Intent(); 3778 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, nri.request); 3779 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, networkAgent.network); 3780 sendIntent(nri.mPendingIntent, intent); 3781 } 3782 // else not handled 3783 } 3784 3785 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 3786 mPendingIntentWakeLock.acquire(); 3787 try { 3788 if (DBG) log("Sending " + pendingIntent); 3789 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 3790 } catch (PendingIntent.CanceledException e) { 3791 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 3792 mPendingIntentWakeLock.release(); 3793 releasePendingNetworkRequest(pendingIntent); 3794 } 3795 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 3796 } 3797 3798 @Override 3799 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 3800 String resultData, Bundle resultExtras) { 3801 if (DBG) log("Finished sending " + pendingIntent); 3802 mPendingIntentWakeLock.release(); 3803 releasePendingNetworkRequest(pendingIntent); 3804 } 3805 3806 private void callCallbackForRequest(NetworkRequestInfo nri, 3807 NetworkAgentInfo networkAgent, int notificationType) { 3808 if (nri.messenger == null) return; // Default request has no msgr 3809 Bundle bundle = new Bundle(); 3810 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 3811 new NetworkRequest(nri.request)); 3812 Message msg = Message.obtain(); 3813 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 3814 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 3815 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 3816 } 3817 switch (notificationType) { 3818 case ConnectivityManager.CALLBACK_LOSING: { 3819 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 3820 break; 3821 } 3822 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 3823 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 3824 new NetworkCapabilities(networkAgent.networkCapabilities)); 3825 break; 3826 } 3827 case ConnectivityManager.CALLBACK_IP_CHANGED: { 3828 bundle.putParcelable(LinkProperties.class.getSimpleName(), 3829 new LinkProperties(networkAgent.linkProperties)); 3830 break; 3831 } 3832 } 3833 msg.what = notificationType; 3834 msg.setData(bundle); 3835 try { 3836 if (VDBG) { 3837 log("sending notification " + notifyTypeToName(notificationType) + 3838 " for " + nri.request); 3839 } 3840 nri.messenger.send(msg); 3841 } catch (RemoteException e) { 3842 // may occur naturally in the race of binder death. 3843 loge("RemoteException caught trying to send a callback msg for " + nri.request); 3844 } 3845 } 3846 3847 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 3848 for (int i = 0; i < nai.networkRequests.size(); i++) { 3849 NetworkRequest nr = nai.networkRequests.valueAt(i); 3850 // Ignore listening requests. 3851 if (!isRequest(nr)) continue; 3852 loge("Dead network still had at least " + nr); 3853 break; 3854 } 3855 nai.asyncChannel.disconnect(); 3856 } 3857 3858 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 3859 if (oldNetwork == null) { 3860 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 3861 return; 3862 } 3863 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 3864 teardownUnneededNetwork(oldNetwork); 3865 } 3866 3867 private void makeDefault(NetworkAgentInfo newNetwork) { 3868 if (DBG) log("Switching to new default network: " + newNetwork); 3869 setupDataActivityTracking(newNetwork); 3870 try { 3871 mNetd.setDefaultNetId(newNetwork.network.netId); 3872 } catch (Exception e) { 3873 loge("Exception setting default network :" + e); 3874 } 3875 notifyLockdownVpn(newNetwork); 3876 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 3877 updateTcpBufferSizes(newNetwork); 3878 } 3879 3880 // Handles a network appearing or improving its score. 3881 // 3882 // - Evaluates all current NetworkRequests that can be 3883 // satisfied by newNetwork, and reassigns to newNetwork 3884 // any such requests for which newNetwork is the best. 3885 // 3886 // - Lingers any Networks that as a result are no longer 3887 // needed. A network is needed if it is the best network for 3888 // one or more NetworkRequests, or if it is a VPN. 3889 // 3890 // - Tears down newNetwork if it just became validated 3891 // (i.e. nascent==true) but turns out to be unneeded. 3892 // Does not tear down newNetwork if it is unvalidated, 3893 // because future validation may improve newNetwork's 3894 // score enough that it is needed. 3895 // 3896 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 3897 // it does not remove NetworkRequests that other Networks could better satisfy. 3898 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 3899 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 3900 // as it performs better by a factor of the number of Networks. 3901 // 3902 // @param nascent indicates if newNetwork just became validated, in which case it should be 3903 // torn down if unneeded. If nascent is false, no action is taken if newNetwork 3904 // is found to be unneeded by this call. Presumably, in this case, either: 3905 // - newNetwork is unvalidated (and left alive), or 3906 // - the NetworkRequests keeping newNetwork alive have been transitioned to 3907 // another higher scoring network by another call to rematchNetworkAndRequests() 3908 // and this other call also lingered newNetwork. 3909 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, boolean nascent) { 3910 if (!newNetwork.created) return; 3911 if (nascent && !newNetwork.validated) loge("ERROR: nascent network not validated."); 3912 boolean keep = newNetwork.isVPN(); 3913 boolean isNewDefault = false; 3914 if (DBG) log("rematching " + newNetwork.name()); 3915 // Find and migrate to this Network any NetworkRequests for 3916 // which this network is now the best. 3917 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 3918 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 3919 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3920 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 3921 if (newNetwork == currentNetwork) { 3922 if (DBG) { 3923 log("Network " + newNetwork.name() + " was already satisfying" + 3924 " request " + nri.request.requestId + ". No change."); 3925 } 3926 keep = true; 3927 continue; 3928 } 3929 3930 // check if it satisfies the NetworkCapabilities 3931 if (VDBG) log(" checking if request is satisfied: " + nri.request); 3932 if (nri.request.networkCapabilities.satisfiedByNetworkCapabilities( 3933 newNetwork.networkCapabilities)) { 3934 if (!nri.isRequest) { 3935 // This is not a request, it's a callback listener. 3936 // Add it to newNetwork regardless of score. 3937 newNetwork.addRequest(nri.request); 3938 continue; 3939 } 3940 3941 // next check if it's better than any current network we're using for 3942 // this request 3943 if (VDBG) { 3944 log("currentScore = " + 3945 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 3946 ", newScore = " + newNetwork.getCurrentScore()); 3947 } 3948 if (currentNetwork == null || 3949 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 3950 if (currentNetwork != null) { 3951 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 3952 currentNetwork.networkRequests.remove(nri.request.requestId); 3953 currentNetwork.networkLingered.add(nri.request); 3954 affectedNetworks.add(currentNetwork); 3955 } else { 3956 if (DBG) log(" accepting network in place of null"); 3957 } 3958 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 3959 newNetwork.addRequest(nri.request); 3960 if (nri.isRequest && nri.request.legacyType != TYPE_NONE) { 3961 mLegacyTypeTracker.add(nri.request.legacyType, newNetwork); 3962 } 3963 keep = true; 3964 // Tell NetworkFactories about the new score, so they can stop 3965 // trying to connect if they know they cannot match it. 3966 // TODO - this could get expensive if we have alot of requests for this 3967 // network. Think about if there is a way to reduce this. Push 3968 // netid->request mapping to each factory? 3969 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 3970 if (mDefaultRequest.requestId == nri.request.requestId) { 3971 isNewDefault = true; 3972 // TODO: Remove following line. It's redundant with makeDefault call. 3973 if (newNetwork.linkProperties != null) { 3974 updateTcpBufferSizes(newNetwork); 3975 setDefaultDnsSystemProperties( 3976 newNetwork.linkProperties.getDnsServers()); 3977 } else { 3978 setDefaultDnsSystemProperties(new ArrayList<InetAddress>()); 3979 } 3980 // Maintain the illusion: since the legacy API only 3981 // understands one network at a time, we must pretend 3982 // that the current default network disconnected before 3983 // the new one connected. 3984 if (currentNetwork != null) { 3985 mLegacyTypeTracker.remove(currentNetwork.networkInfo.getType(), 3986 currentNetwork); 3987 } 3988 mDefaultInetConditionPublished = newNetwork.validated ? 100 : 0; 3989 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 3990 notifyLockdownVpn(newNetwork); 3991 } 3992 } 3993 } 3994 } 3995 // Linger any networks that are no longer needed. 3996 for (NetworkAgentInfo nai : affectedNetworks) { 3997 boolean teardown = !nai.isVPN() && nai.validated; 3998 for (int i = 0; i < nai.networkRequests.size() && teardown; i++) { 3999 NetworkRequest nr = nai.networkRequests.valueAt(i); 4000 try { 4001 if (isRequest(nr)) { 4002 teardown = false; 4003 } 4004 } catch (Exception e) { 4005 loge("Request " + nr + " not found in mNetworkRequests."); 4006 loge(" it came from request list of " + nai.name()); 4007 } 4008 } 4009 if (teardown) { 4010 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4011 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4012 } else { 4013 // not going to linger, so kill the list of linger networks.. only 4014 // notify them of linger if it happens as the result of gaining another, 4015 // but if they transition and old network stays up, don't tell them of linger 4016 // or very delayed loss 4017 nai.networkLingered.clear(); 4018 if (VDBG) log("Lingered for " + nai.name() + " cleared"); 4019 } 4020 } 4021 if (keep) { 4022 if (isNewDefault) { 4023 // Notify system services that this network is up. 4024 makeDefault(newNetwork); 4025 synchronized (ConnectivityService.this) { 4026 // have a new default network, release the transition wakelock in 4027 // a second if it's held. The second pause is to allow apps 4028 // to reconnect over the new network 4029 if (mNetTransitionWakeLock.isHeld()) { 4030 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4031 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4032 mNetTransitionWakeLockSerialNumber, 0), 4033 1000); 4034 } 4035 } 4036 } 4037 4038 // Notify battery stats service about this network, both the normal 4039 // interface and any stacked links. 4040 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4041 try { 4042 final IBatteryStats bs = BatteryStatsService.getService(); 4043 final int type = newNetwork.networkInfo.getType(); 4044 4045 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4046 bs.noteNetworkInterfaceType(baseIface, type); 4047 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4048 final String stackedIface = stacked.getInterfaceName(); 4049 bs.noteNetworkInterfaceType(stackedIface, type); 4050 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4051 } 4052 } catch (RemoteException ignored) { 4053 } 4054 4055 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4056 4057 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4058 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4059 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4060 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4061 if (newNetwork.isVPN()) { 4062 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4063 } 4064 } else if (nascent) { 4065 // Only tear down newly validated networks here. Leave unvalidated to either become 4066 // validated (and get evaluated against peers, one losing here) or 4067 // NetworkMonitor reports a bad network and we tear it down then. 4068 // Networks that have been up for a while and are validated should be torn down via 4069 // the lingering process so communication on that network is given time to wrap up. 4070 // TODO: Could teardown unvalidated networks when their NetworkCapabilities 4071 // satisfy no NetworkRequests. 4072 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4073 teardownUnneededNetwork(newNetwork); 4074 } 4075 } 4076 4077 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4078 // being disconnected. 4079 // If only one Network's score or capabilities have been modified since the last time 4080 // this function was called, pass this Network in via the "changed" arugment, otherwise 4081 // pass null. 4082 // If only one Network has been changed but its NetworkCapabilities have not changed, 4083 // pass in the Network's score (from getCurrentScore()) prior to the change via 4084 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4085 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4086 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4087 // to avoid the slowness. It is not simply enough to process just "changed", for 4088 // example in the case where "changed"'s score decreases and another network should begin 4089 // satifying a NetworkRequest that "changed" currently satisfies. 4090 4091 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4092 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4093 // rematchNetworkAndRequests() handles. 4094 if (changed != null && oldScore < changed.getCurrentScore()) { 4095 rematchNetworkAndRequests(changed, false); 4096 } else { 4097 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4098 rematchNetworkAndRequests(nai, false); 4099 } 4100 } 4101 } 4102 4103 private void updateInetCondition(NetworkAgentInfo nai, boolean valid) { 4104 // Don't bother updating until we've graduated to validated at least once. 4105 if (!nai.validated) return; 4106 // For now only update icons for default connection. 4107 // TODO: Update WiFi and cellular icons separately. b/17237507 4108 if (!isDefaultNetwork(nai)) return; 4109 4110 int newInetCondition = valid ? 100 : 0; 4111 // Don't repeat publish. 4112 if (newInetCondition == mDefaultInetConditionPublished) return; 4113 4114 mDefaultInetConditionPublished = newInetCondition; 4115 sendInetConditionBroadcast(nai.networkInfo); 4116 } 4117 4118 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4119 if (mLockdownTracker != null) { 4120 if (nai != null && nai.isVPN()) { 4121 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4122 } else { 4123 mLockdownTracker.onNetworkInfoChanged(); 4124 } 4125 } 4126 } 4127 4128 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4129 NetworkInfo.State state = newInfo.getState(); 4130 NetworkInfo oldInfo = null; 4131 synchronized (networkAgent) { 4132 oldInfo = networkAgent.networkInfo; 4133 networkAgent.networkInfo = newInfo; 4134 } 4135 notifyLockdownVpn(networkAgent); 4136 4137 if (oldInfo != null && oldInfo.getState() == state) { 4138 if (VDBG) log("ignoring duplicate network state non-change"); 4139 return; 4140 } 4141 if (DBG) { 4142 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4143 (oldInfo == null ? "null" : oldInfo.getState()) + 4144 " to " + state); 4145 } 4146 4147 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4148 try { 4149 // This should never fail. Specifying an already in use NetID will cause failure. 4150 if (networkAgent.isVPN()) { 4151 mNetd.createVirtualNetwork(networkAgent.network.netId, 4152 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4153 (networkAgent.networkMisc == null || 4154 !networkAgent.networkMisc.allowBypass)); 4155 } else { 4156 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4157 } 4158 } catch (Exception e) { 4159 loge("Error creating network " + networkAgent.network.netId + ": " 4160 + e.getMessage()); 4161 return; 4162 } 4163 networkAgent.created = true; 4164 updateLinkProperties(networkAgent, null); 4165 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4166 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4167 if (networkAgent.isVPN()) { 4168 // Temporarily disable the default proxy (not global). 4169 synchronized (mProxyLock) { 4170 if (!mDefaultProxyDisabled) { 4171 mDefaultProxyDisabled = true; 4172 if (mGlobalProxy == null && mDefaultProxy != null) { 4173 sendProxyBroadcast(null); 4174 } 4175 } 4176 } 4177 // TODO: support proxy per network. 4178 } 4179 // Consider network even though it is not yet validated. 4180 rematchNetworkAndRequests(networkAgent, false); 4181 } else if (state == NetworkInfo.State.DISCONNECTED || 4182 state == NetworkInfo.State.SUSPENDED) { 4183 networkAgent.asyncChannel.disconnect(); 4184 if (networkAgent.isVPN()) { 4185 synchronized (mProxyLock) { 4186 if (mDefaultProxyDisabled) { 4187 mDefaultProxyDisabled = false; 4188 if (mGlobalProxy == null && mDefaultProxy != null) { 4189 sendProxyBroadcast(mDefaultProxy); 4190 } 4191 } 4192 } 4193 } 4194 } 4195 } 4196 4197 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4198 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4199 if (score < 0) { 4200 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4201 "). Bumping score to min of 0"); 4202 score = 0; 4203 } 4204 4205 final int oldScore = nai.getCurrentScore(); 4206 nai.setCurrentScore(score); 4207 4208 rematchAllNetworksAndRequests(nai, oldScore); 4209 4210 sendUpdatedScoreToFactories(nai); 4211 } 4212 4213 // notify only this one new request of the current state 4214 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4215 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4216 // TODO - read state from monitor to decide what to send. 4217// if (nai.networkMonitor.isLingering()) { 4218// notifyType = NetworkCallbacks.LOSING; 4219// } else if (nai.networkMonitor.isEvaluating()) { 4220// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4221// } 4222 if (nri.mPendingIntent == null) { 4223 callCallbackForRequest(nri, nai, notifyType); 4224 } else { 4225 sendPendingIntentForRequest(nri, nai, notifyType); 4226 } 4227 } 4228 4229 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4230 // The NetworkInfo we actually send out has no bearing on the real 4231 // state of affairs. For example, if the default connection is mobile, 4232 // and a request for HIPRI has just gone away, we need to pretend that 4233 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4234 // the state to DISCONNECTED, even though the network is of type MOBILE 4235 // and is still connected. 4236 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4237 info.setType(type); 4238 if (connected) { 4239 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4240 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 4241 } else { 4242 info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo()); 4243 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4244 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4245 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4246 if (info.isFailover()) { 4247 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4248 nai.networkInfo.setFailover(false); 4249 } 4250 if (info.getReason() != null) { 4251 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4252 } 4253 if (info.getExtraInfo() != null) { 4254 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4255 } 4256 NetworkAgentInfo newDefaultAgent = null; 4257 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4258 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4259 if (newDefaultAgent != null) { 4260 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4261 newDefaultAgent.networkInfo); 4262 } else { 4263 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4264 } 4265 } 4266 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4267 mDefaultInetConditionPublished); 4268 final Intent immediateIntent = new Intent(intent); 4269 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 4270 sendStickyBroadcast(immediateIntent); 4271 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 4272 if (newDefaultAgent != null) { 4273 sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo, 4274 getConnectivityChangeDelay()); 4275 } 4276 } 4277 } 4278 4279 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4280 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4281 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4282 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4283 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4284 if (VDBG) log(" sending notification for " + nr); 4285 if (nri.mPendingIntent == null) { 4286 callCallbackForRequest(nri, networkAgent, notifyType); 4287 } else { 4288 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4289 } 4290 } 4291 } 4292 4293 private String notifyTypeToName(int notifyType) { 4294 switch (notifyType) { 4295 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4296 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4297 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4298 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4299 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4300 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4301 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4302 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4303 } 4304 return "UNKNOWN"; 4305 } 4306 4307 @Override 4308 public boolean addVpnAddress(String address, int prefixLength) { 4309 throwIfLockdownEnabled(); 4310 int user = UserHandle.getUserId(Binder.getCallingUid()); 4311 synchronized (mVpns) { 4312 return mVpns.get(user).addAddress(address, prefixLength); 4313 } 4314 } 4315 4316 @Override 4317 public boolean removeVpnAddress(String address, int prefixLength) { 4318 throwIfLockdownEnabled(); 4319 int user = UserHandle.getUserId(Binder.getCallingUid()); 4320 synchronized (mVpns) { 4321 return mVpns.get(user).removeAddress(address, prefixLength); 4322 } 4323 } 4324 4325 @Override 4326 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4327 throwIfLockdownEnabled(); 4328 int user = UserHandle.getUserId(Binder.getCallingUid()); 4329 synchronized (mVpns) { 4330 return mVpns.get(user).setUnderlyingNetworks(networks); 4331 } 4332 } 4333} 4334