ConnectivityService.java revision 0653f508b58eab994089ae2da783852a5c1b4a8a
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.LinkQualityInfo; 69import android.net.MobileDataStateTracker; 70import android.net.Network; 71import android.net.NetworkAgent; 72import android.net.NetworkCapabilities; 73import android.net.NetworkConfig; 74import android.net.NetworkInfo; 75import android.net.NetworkInfo.DetailedState; 76import android.net.NetworkFactory; 77import android.net.NetworkMisc; 78import android.net.NetworkQuotaInfo; 79import android.net.NetworkRequest; 80import android.net.NetworkState; 81import android.net.NetworkStateTracker; 82import android.net.NetworkUtils; 83import android.net.Proxy; 84import android.net.ProxyDataTracker; 85import android.net.ProxyInfo; 86import android.net.RouteInfo; 87import android.net.SamplingDataTracker; 88import android.net.UidRange; 89import android.net.Uri; 90import android.net.wimax.WimaxManagerConstants; 91import android.os.AsyncTask; 92import android.os.Binder; 93import android.os.Build; 94import android.os.Bundle; 95import android.os.FileUtils; 96import android.os.Handler; 97import android.os.HandlerThread; 98import android.os.IBinder; 99import android.os.INetworkManagementService; 100import android.os.Looper; 101import android.os.Message; 102import android.os.Messenger; 103import android.os.ParcelFileDescriptor; 104import android.os.PowerManager; 105import android.os.Process; 106import android.os.RemoteException; 107import android.os.ServiceManager; 108import android.os.SystemClock; 109import android.os.SystemProperties; 110import android.os.UserHandle; 111import android.os.UserManager; 112import android.provider.Settings; 113import android.security.Credentials; 114import android.security.KeyStore; 115import android.telephony.TelephonyManager; 116import android.text.TextUtils; 117import android.util.Slog; 118import android.util.SparseArray; 119import android.util.SparseIntArray; 120import android.util.Xml; 121 122import com.android.internal.R; 123import com.android.internal.annotations.GuardedBy; 124import com.android.internal.app.IBatteryStats; 125import com.android.internal.net.LegacyVpnInfo; 126import com.android.internal.net.NetworkStatsFactory; 127import com.android.internal.net.VpnConfig; 128import com.android.internal.net.VpnProfile; 129import com.android.internal.telephony.DctConstants; 130import com.android.internal.telephony.Phone; 131import com.android.internal.telephony.PhoneConstants; 132import com.android.internal.telephony.TelephonyIntents; 133import com.android.internal.util.AsyncChannel; 134import com.android.internal.util.IndentingPrintWriter; 135import com.android.internal.util.XmlUtils; 136import com.android.server.am.BatteryStatsService; 137import com.android.server.connectivity.DataConnectionStats; 138import com.android.server.connectivity.Nat464Xlat; 139import com.android.server.connectivity.NetworkAgentInfo; 140import com.android.server.connectivity.NetworkMonitor; 141import com.android.server.connectivity.PacManager; 142import com.android.server.connectivity.PermissionMonitor; 143import com.android.server.connectivity.Tethering; 144import com.android.server.connectivity.Vpn; 145import com.android.server.net.BaseNetworkObserver; 146import com.android.server.net.LockdownVpnTracker; 147import com.google.android.collect.Lists; 148import com.google.android.collect.Sets; 149 150import dalvik.system.DexClassLoader; 151 152import org.xmlpull.v1.XmlPullParser; 153import org.xmlpull.v1.XmlPullParserException; 154 155import java.io.File; 156import java.io.FileDescriptor; 157import java.io.FileNotFoundException; 158import java.io.FileReader; 159import java.io.IOException; 160import java.io.PrintWriter; 161import java.lang.reflect.Constructor; 162import java.net.HttpURLConnection; 163import java.net.Inet4Address; 164import java.net.Inet6Address; 165import java.net.InetAddress; 166import java.net.URL; 167import java.net.UnknownHostException; 168import java.util.ArrayList; 169import java.util.Arrays; 170import java.util.Collection; 171import java.util.GregorianCalendar; 172import java.util.HashMap; 173import java.util.HashSet; 174import java.util.List; 175import java.util.Map; 176import java.util.Objects; 177import java.util.Random; 178import java.util.concurrent.atomic.AtomicBoolean; 179import java.util.concurrent.atomic.AtomicInteger; 180 181import javax.net.ssl.HostnameVerifier; 182import javax.net.ssl.HttpsURLConnection; 183import javax.net.ssl.SSLSession; 184 185/** 186 * @hide 187 */ 188public class ConnectivityService extends IConnectivityManager.Stub 189 implements PendingIntent.OnFinished { 190 private static final String TAG = "ConnectivityService"; 191 192 private static final boolean DBG = true; 193 private static final boolean VDBG = false; 194 195 // network sampling debugging 196 private static final boolean SAMPLE_DBG = false; 197 198 private static final boolean LOGD_RULES = false; 199 200 // TODO: create better separation between radio types and network types 201 202 // how long to wait before switching back to a radio's default network 203 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 204 // system property that can override the above value 205 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 206 "android.telephony.apn-restore"; 207 208 // Default value if FAIL_FAST_TIME_MS is not set 209 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 210 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 211 private static final String FAIL_FAST_TIME_MS = 212 "persist.radio.fail_fast_time_ms"; 213 214 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 215 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 216 217 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 218 219 private PendingIntent mSampleIntervalElapsedIntent; 220 221 // Set network sampling interval at 12 minutes, this way, even if the timers get 222 // aggregated, it will fire at around 15 minutes, which should allow us to 223 // aggregate this timer with other timers (specially the socket keep alive timers) 224 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 12 * 60); 225 226 // start network sampling a minute after booting ... 227 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 60); 228 229 AlarmManager mAlarmManager; 230 231 private Tethering mTethering; 232 233 private final PermissionMonitor mPermissionMonitor; 234 235 private KeyStore mKeyStore; 236 237 @GuardedBy("mVpns") 238 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 239 240 private boolean mLockdownEnabled; 241 private LockdownVpnTracker mLockdownTracker; 242 243 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 244 private Object mRulesLock = new Object(); 245 /** Currently active network rules by UID. */ 246 private SparseIntArray mUidRules = new SparseIntArray(); 247 /** Set of ifaces that are costly. */ 248 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 249 250 /** 251 * Sometimes we want to refer to the individual network state 252 * trackers separately, and sometimes we just want to treat them 253 * abstractly. 254 */ 255 private NetworkStateTracker mNetTrackers[]; 256 257 private Context mContext; 258 private int mNetworkPreference; 259 private int mActiveDefaultNetwork = TYPE_NONE; 260 // 0 is full bad, 100 is full good 261 private int mDefaultInetConditionPublished = 0; 262 263 private Object mDnsLock = new Object(); 264 private int mNumDnsEntries; 265 266 private boolean mTestMode; 267 private static ConnectivityService sServiceInstance; 268 269 private INetworkManagementService mNetd; 270 private INetworkPolicyManager mPolicyManager; 271 272 private String mCurrentTcpBufferSizes; 273 274 private static final int ENABLED = 1; 275 private static final int DISABLED = 0; 276 277 /** 278 * used internally to change our mobile data enabled flag 279 */ 280 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 281 282 /** 283 * used internally to clear a wakelock when transitioning 284 * from one net to another. Clear happens when we get a new 285 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 286 * after a timeout if no network is found (typically 1 min). 287 */ 288 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 289 290 /** 291 * used internally to reload global proxy settings 292 */ 293 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 294 295 /** 296 * used internally to set external dependency met/unmet 297 * arg1 = ENABLED (met) or DISABLED (unmet) 298 * arg2 = NetworkType 299 */ 300 private static final int EVENT_SET_DEPENDENCY_MET = 10; 301 302 /** 303 * used internally to send a sticky broadcast delayed. 304 */ 305 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 306 307 /** 308 * Used internally to 309 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 310 */ 311 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 312 313 /** 314 * Used internally to disable fail fast of mobile data 315 */ 316 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 317 318 /** 319 * used internally to indicate that data sampling interval is up 320 */ 321 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 322 323 /** 324 * PAC manager has received new port. 325 */ 326 private static final int EVENT_PROXY_HAS_CHANGED = 16; 327 328 /** 329 * used internally when registering NetworkFactories 330 * obj = NetworkFactoryInfo 331 */ 332 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 333 334 /** 335 * used internally when registering NetworkAgents 336 * obj = Messenger 337 */ 338 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 339 340 /** 341 * used to add a network request 342 * includes a NetworkRequestInfo 343 */ 344 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 345 346 /** 347 * indicates a timeout period is over - check if we had a network yet or not 348 * and if not, call the timeout calback (but leave the request live until they 349 * cancel it. 350 * includes a NetworkRequestInfo 351 */ 352 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 353 354 /** 355 * used to add a network listener - no request 356 * includes a NetworkRequestInfo 357 */ 358 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 359 360 /** 361 * used to remove a network request, either a listener or a real request 362 * arg1 = UID of caller 363 * obj = NetworkRequest 364 */ 365 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 366 367 /** 368 * used internally when registering NetworkFactories 369 * obj = Messenger 370 */ 371 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 372 373 /** 374 * used internally to expire a wakelock when transitioning 375 * from one net to another. Expire happens when we fail to find 376 * a new network (typically after 1 minute) - 377 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 378 * a replacement network. 379 */ 380 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 381 382 /** 383 * Used internally to indicate the system is ready. 384 */ 385 private static final int EVENT_SYSTEM_READY = 25; 386 387 /** 388 * used to add a network request with a pending intent 389 * includes a NetworkRequestInfo 390 */ 391 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 392 393 /** 394 * used to remove a pending intent and its associated network request. 395 * arg1 = UID of caller 396 * obj = PendingIntent 397 */ 398 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 399 400 401 /** Handler used for internal events. */ 402 final private InternalHandler mHandler; 403 /** Handler used for incoming {@link NetworkStateTracker} events. */ 404 final private NetworkStateTrackerHandler mTrackerHandler; 405 406 private boolean mSystemReady; 407 private Intent mInitialBroadcast; 408 409 private PowerManager.WakeLock mNetTransitionWakeLock; 410 private String mNetTransitionWakeLockCausedBy = ""; 411 private int mNetTransitionWakeLockSerialNumber; 412 private int mNetTransitionWakeLockTimeout; 413 private final PowerManager.WakeLock mPendingIntentWakeLock; 414 415 private InetAddress mDefaultDns; 416 417 // used in DBG mode to track inet condition reports 418 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 419 private ArrayList mInetLog; 420 421 // track the current default http proxy - tell the world if we get a new one (real change) 422 private volatile ProxyInfo mDefaultProxy = null; 423 private Object mProxyLock = new Object(); 424 private boolean mDefaultProxyDisabled = false; 425 426 // track the global proxy. 427 private ProxyInfo mGlobalProxy = null; 428 429 private PacManager mPacManager = null; 430 431 private SettingsObserver mSettingsObserver; 432 433 private UserManager mUserManager; 434 435 NetworkConfig[] mNetConfigs; 436 int mNetworksDefined; 437 438 // the set of network types that can only be enabled by system/sig apps 439 List mProtectedNetworks; 440 441 private DataConnectionStats mDataConnectionStats; 442 443 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 444 445 TelephonyManager mTelephonyManager; 446 447 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 448 private final static int MIN_NET_ID = 100; // some reserved marks 449 private final static int MAX_NET_ID = 65535; 450 private int mNextNetId = MIN_NET_ID; 451 452 // sequence number of NetworkRequests 453 private int mNextNetworkRequestId = 1; 454 455 /** 456 * Implements support for the legacy "one network per network type" model. 457 * 458 * We used to have a static array of NetworkStateTrackers, one for each 459 * network type, but that doesn't work any more now that we can have, 460 * for example, more that one wifi network. This class stores all the 461 * NetworkAgentInfo objects that support a given type, but the legacy 462 * API will only see the first one. 463 * 464 * It serves two main purposes: 465 * 466 * 1. Provide information about "the network for a given type" (since this 467 * API only supports one). 468 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 469 * the first network for a given type changes, or if the default network 470 * changes. 471 */ 472 private class LegacyTypeTracker { 473 474 private static final boolean DBG = true; 475 private static final boolean VDBG = false; 476 private static final String TAG = "CSLegacyTypeTracker"; 477 478 /** 479 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 480 * Each list holds references to all NetworkAgentInfos that are used to 481 * satisfy requests for that network type. 482 * 483 * This array is built out at startup such that an unsupported network 484 * doesn't get an ArrayList instance, making this a tristate: 485 * unsupported, supported but not active and active. 486 * 487 * The actual lists are populated when we scan the network types that 488 * are supported on this device. 489 */ 490 private ArrayList<NetworkAgentInfo> mTypeLists[]; 491 492 public LegacyTypeTracker() { 493 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 494 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 495 } 496 497 public void addSupportedType(int type) { 498 if (mTypeLists[type] != null) { 499 throw new IllegalStateException( 500 "legacy list for type " + type + "already initialized"); 501 } 502 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 503 } 504 505 public boolean isTypeSupported(int type) { 506 return isNetworkTypeValid(type) && mTypeLists[type] != null; 507 } 508 509 public NetworkAgentInfo getNetworkForType(int type) { 510 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 511 return mTypeLists[type].get(0); 512 } else { 513 return null; 514 } 515 } 516 517 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 518 if (DBG) { 519 log("Sending " + (connected ? "connected" : "disconnected") + 520 " broadcast for type " + type + " " + nai.name() + 521 " isDefaultNetwork=" + isDefaultNetwork(nai)); 522 } 523 } 524 525 /** Adds the given network to the specified legacy type list. */ 526 public void add(int type, NetworkAgentInfo nai) { 527 if (!isTypeSupported(type)) { 528 return; // Invalid network type. 529 } 530 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 531 532 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 533 if (list.contains(nai)) { 534 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 535 return; 536 } 537 538 list.add(nai); 539 540 // Send a broadcast if this is the first network of its type or if it's the default. 541 if (list.size() == 1 || isDefaultNetwork(nai)) { 542 maybeLogBroadcast(nai, true, type); 543 sendLegacyNetworkBroadcast(nai, true, type); 544 } 545 } 546 547 /** Removes the given network from the specified legacy type list. */ 548 public void remove(int type, NetworkAgentInfo nai) { 549 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 550 if (list == null || list.isEmpty()) { 551 return; 552 } 553 554 boolean wasFirstNetwork = list.get(0).equals(nai); 555 556 if (!list.remove(nai)) { 557 return; 558 } 559 560 if (wasFirstNetwork || isDefaultNetwork(nai)) { 561 maybeLogBroadcast(nai, false, type); 562 sendLegacyNetworkBroadcast(nai, false, type); 563 } 564 565 if (!list.isEmpty() && wasFirstNetwork) { 566 if (DBG) log("Other network available for type " + type + 567 ", sending connected broadcast"); 568 maybeLogBroadcast(list.get(0), false, type); 569 sendLegacyNetworkBroadcast(list.get(0), false, type); 570 } 571 } 572 573 /** Removes the given network from all legacy type lists. */ 574 public void remove(NetworkAgentInfo nai) { 575 if (VDBG) log("Removing agent " + nai); 576 for (int type = 0; type < mTypeLists.length; type++) { 577 remove(type, nai); 578 } 579 } 580 581 private String naiToString(NetworkAgentInfo nai) { 582 String name = (nai != null) ? nai.name() : "null"; 583 String state = (nai.networkInfo != null) ? 584 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 585 "???/???"; 586 return name + " " + state; 587 } 588 589 public void dump(IndentingPrintWriter pw) { 590 for (int type = 0; type < mTypeLists.length; type++) { 591 if (mTypeLists[type] == null) continue; 592 pw.print(type + " "); 593 pw.increaseIndent(); 594 if (mTypeLists[type].size() == 0) pw.println("none"); 595 for (NetworkAgentInfo nai : mTypeLists[type]) { 596 pw.println(naiToString(nai)); 597 } 598 pw.decreaseIndent(); 599 } 600 } 601 602 // This class needs its own log method because it has a different TAG. 603 private void log(String s) { 604 Slog.d(TAG, s); 605 } 606 607 } 608 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 609 610 public ConnectivityService(Context context, INetworkManagementService netManager, 611 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 612 if (DBG) log("ConnectivityService starting up"); 613 614 NetworkCapabilities netCap = new NetworkCapabilities(); 615 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 616 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 617 mDefaultRequest = new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 618 NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(), 619 NetworkRequestInfo.REQUEST); 620 mNetworkRequests.put(mDefaultRequest, nri); 621 622 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 623 handlerThread.start(); 624 mHandler = new InternalHandler(handlerThread.getLooper()); 625 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 626 627 // setup our unique device name 628 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 629 String id = Settings.Secure.getString(context.getContentResolver(), 630 Settings.Secure.ANDROID_ID); 631 if (id != null && id.length() > 0) { 632 String name = new String("android-").concat(id); 633 SystemProperties.set("net.hostname", name); 634 } 635 } 636 637 // read our default dns server ip 638 String dns = Settings.Global.getString(context.getContentResolver(), 639 Settings.Global.DEFAULT_DNS_SERVER); 640 if (dns == null || dns.length() == 0) { 641 dns = context.getResources().getString( 642 com.android.internal.R.string.config_default_dns_server); 643 } 644 try { 645 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 646 } catch (IllegalArgumentException e) { 647 loge("Error setting defaultDns using " + dns); 648 } 649 650 mContext = checkNotNull(context, "missing Context"); 651 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 652 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 653 mKeyStore = KeyStore.getInstance(); 654 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 655 656 try { 657 mPolicyManager.registerListener(mPolicyListener); 658 } catch (RemoteException e) { 659 // ouch, no rules updates means some processes may never get network 660 loge("unable to register INetworkPolicyListener" + e.toString()); 661 } 662 663 final PowerManager powerManager = (PowerManager) context.getSystemService( 664 Context.POWER_SERVICE); 665 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 666 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 667 com.android.internal.R.integer.config_networkTransitionTimeout); 668 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 669 670 mNetTrackers = new NetworkStateTracker[ 671 ConnectivityManager.MAX_NETWORK_TYPE+1]; 672 673 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 674 675 // TODO: What is the "correct" way to do determine if this is a wifi only device? 676 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 677 log("wifiOnly=" + wifiOnly); 678 String[] naStrings = context.getResources().getStringArray( 679 com.android.internal.R.array.networkAttributes); 680 for (String naString : naStrings) { 681 try { 682 NetworkConfig n = new NetworkConfig(naString); 683 if (VDBG) log("naString=" + naString + " config=" + n); 684 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 685 loge("Error in networkAttributes - ignoring attempt to define type " + 686 n.type); 687 continue; 688 } 689 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 690 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 691 n.type); 692 continue; 693 } 694 if (mNetConfigs[n.type] != null) { 695 loge("Error in networkAttributes - ignoring attempt to redefine type " + 696 n.type); 697 continue; 698 } 699 mLegacyTypeTracker.addSupportedType(n.type); 700 701 mNetConfigs[n.type] = n; 702 mNetworksDefined++; 703 } catch(Exception e) { 704 // ignore it - leave the entry null 705 } 706 } 707 708 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 709 if (mNetConfigs[TYPE_VPN] == null) { 710 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 711 // don't need to add TYPE_VPN to mNetConfigs. 712 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 713 mNetworksDefined++; // used only in the log() statement below. 714 } 715 716 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 717 718 mProtectedNetworks = new ArrayList<Integer>(); 719 int[] protectedNetworks = context.getResources().getIntArray( 720 com.android.internal.R.array.config_protectedNetworks); 721 for (int p : protectedNetworks) { 722 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 723 mProtectedNetworks.add(p); 724 } else { 725 if (DBG) loge("Ignoring protectedNetwork " + p); 726 } 727 } 728 729 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 730 && SystemProperties.get("ro.build.type").equals("eng"); 731 732 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 733 734 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 735 736 //set up the listener for user state for creating user VPNs 737 IntentFilter intentFilter = new IntentFilter(); 738 intentFilter.addAction(Intent.ACTION_USER_STARTING); 739 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 740 mContext.registerReceiverAsUser( 741 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 742 743 try { 744 mNetd.registerObserver(mTethering); 745 mNetd.registerObserver(mDataActivityObserver); 746 } catch (RemoteException e) { 747 loge("Error registering observer :" + e); 748 } 749 750 if (DBG) { 751 mInetLog = new ArrayList(); 752 } 753 754 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 755 mSettingsObserver.observe(mContext); 756 757 mDataConnectionStats = new DataConnectionStats(mContext); 758 mDataConnectionStats.startMonitoring(); 759 760 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 761 762 IntentFilter filter = new IntentFilter(); 763 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 764 mContext.registerReceiver( 765 new BroadcastReceiver() { 766 @Override 767 public void onReceive(Context context, Intent intent) { 768 String action = intent.getAction(); 769 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 770 mHandler.sendMessage(mHandler.obtainMessage 771 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 772 } 773 } 774 }, 775 new IntentFilter(filter)); 776 777 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 778 779 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 780 } 781 782 private synchronized int nextNetworkRequestId() { 783 return mNextNetworkRequestId++; 784 } 785 786 private void assignNextNetId(NetworkAgentInfo nai) { 787 synchronized (mNetworkForNetId) { 788 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 789 int netId = mNextNetId; 790 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 791 // Make sure NetID unused. http://b/16815182 792 if (mNetworkForNetId.get(netId) == null) { 793 nai.network = new Network(netId); 794 mNetworkForNetId.put(netId, nai); 795 return; 796 } 797 } 798 } 799 throw new IllegalStateException("No free netIds"); 800 } 801 802 private int getConnectivityChangeDelay() { 803 final ContentResolver cr = mContext.getContentResolver(); 804 805 /** Check system properties for the default value then use secure settings value, if any. */ 806 int defaultDelay = SystemProperties.getInt( 807 "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY, 808 ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT); 809 return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY, 810 defaultDelay); 811 } 812 813 private boolean teardown(NetworkStateTracker netTracker) { 814 if (netTracker.teardown()) { 815 netTracker.setTeardownRequested(true); 816 return true; 817 } else { 818 return false; 819 } 820 } 821 822 /** 823 * Check if UID should be blocked from using the network represented by the given networkType. 824 * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type. 825 */ 826 private boolean isNetworkBlocked(int networkType, int uid) { 827 return isNetworkWithLinkPropertiesBlocked(getLinkPropertiesForType(networkType), uid); 828 } 829 830 /** 831 * Check if UID should be blocked from using the network represented by the given 832 * NetworkAgentInfo. 833 */ 834 private boolean isNetworkBlocked(NetworkAgentInfo nai, int uid) { 835 return isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid); 836 } 837 838 /** 839 * Check if UID should be blocked from using the network with the given LinkProperties. 840 */ 841 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 842 final boolean networkCostly; 843 final int uidRules; 844 845 final String iface = (lp == null ? "" : lp.getInterfaceName()); 846 synchronized (mRulesLock) { 847 networkCostly = mMeteredIfaces.contains(iface); 848 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 849 } 850 851 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 852 return true; 853 } 854 855 // no restrictive rules; network is visible 856 return false; 857 } 858 859 /** 860 * Return a filtered {@link NetworkInfo}, potentially marked 861 * {@link DetailedState#BLOCKED} based on 862 * {@link #isNetworkBlocked}. 863 * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type. 864 */ 865 private NetworkInfo getFilteredNetworkInfo(int networkType, int uid) { 866 NetworkInfo info = getNetworkInfoForType(networkType); 867 return getFilteredNetworkInfo(info, networkType, uid); 868 } 869 870 /* 871 * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type. 872 */ 873 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, int networkType, int uid) { 874 if (isNetworkBlocked(networkType, uid)) { 875 // network is blocked; clone and override state 876 info = new NetworkInfo(info); 877 info.setDetailedState(DetailedState.BLOCKED, null, null); 878 if (VDBG) log("returning Blocked NetworkInfo"); 879 } 880 if (mLockdownTracker != null) { 881 info = mLockdownTracker.augmentNetworkInfo(info); 882 if (VDBG) log("returning Locked NetworkInfo"); 883 } 884 return info; 885 } 886 887 private NetworkInfo getFilteredNetworkInfo(NetworkAgentInfo nai, int uid) { 888 NetworkInfo info = nai.networkInfo; 889 if (isNetworkBlocked(nai, uid)) { 890 // network is blocked; clone and override state 891 info = new NetworkInfo(info); 892 info.setDetailedState(DetailedState.BLOCKED, null, null); 893 if (DBG) log("returning Blocked NetworkInfo"); 894 } 895 if (mLockdownTracker != null) { 896 info = mLockdownTracker.augmentNetworkInfo(info); 897 if (DBG) log("returning Locked NetworkInfo"); 898 } 899 return info; 900 } 901 902 /** 903 * Return NetworkInfo for the active (i.e., connected) network interface. 904 * It is assumed that at most one network is active at a time. If more 905 * than one is active, it is indeterminate which will be returned. 906 * @return the info for the active network, or {@code null} if none is 907 * active 908 */ 909 @Override 910 public NetworkInfo getActiveNetworkInfo() { 911 enforceAccessPermission(); 912 final int uid = Binder.getCallingUid(); 913 return getNetworkInfo(mActiveDefaultNetwork, uid); 914 } 915 916 /** 917 * Find the first Provisioning network. 918 * 919 * @return NetworkInfo or null if none. 920 */ 921 private NetworkInfo getProvisioningNetworkInfo() { 922 enforceAccessPermission(); 923 924 // Find the first Provisioning Network 925 NetworkInfo provNi = null; 926 for (NetworkInfo ni : getAllNetworkInfo()) { 927 if (ni.isConnectedToProvisioningNetwork()) { 928 provNi = ni; 929 break; 930 } 931 } 932 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 933 return provNi; 934 } 935 936 /** 937 * Find the first Provisioning network or the ActiveDefaultNetwork 938 * if there is no Provisioning network 939 * 940 * @return NetworkInfo or null if none. 941 */ 942 @Override 943 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 944 enforceAccessPermission(); 945 946 NetworkInfo provNi = getProvisioningNetworkInfo(); 947 if (provNi == null) { 948 final int uid = Binder.getCallingUid(); 949 provNi = getNetworkInfo(mActiveDefaultNetwork, uid); 950 } 951 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 952 return provNi; 953 } 954 955 public NetworkInfo getActiveNetworkInfoUnfiltered() { 956 enforceAccessPermission(); 957 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 958 return getNetworkInfoForType(mActiveDefaultNetwork); 959 } 960 return null; 961 } 962 963 @Override 964 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 965 enforceConnectivityInternalPermission(); 966 return getNetworkInfo(mActiveDefaultNetwork, uid); 967 } 968 969 @Override 970 public NetworkInfo getNetworkInfo(int networkType) { 971 enforceAccessPermission(); 972 final int uid = Binder.getCallingUid(); 973 return getNetworkInfo(networkType, uid); 974 } 975 976 private NetworkInfo getNetworkInfo(int networkType, int uid) { 977 NetworkInfo info = null; 978 if (isNetworkTypeValid(networkType)) { 979 if (getNetworkInfoForType(networkType) != null) { 980 info = getFilteredNetworkInfo(networkType, uid); 981 } 982 } 983 return info; 984 } 985 986 @Override 987 public NetworkInfo getNetworkInfoForNetwork(Network network) { 988 enforceAccessPermission(); 989 if (network == null) return null; 990 991 final int uid = Binder.getCallingUid(); 992 NetworkAgentInfo nai = null; 993 synchronized (mNetworkForNetId) { 994 nai = mNetworkForNetId.get(network.netId); 995 } 996 if (nai == null) return null; 997 synchronized (nai) { 998 if (nai.networkInfo == null) return null; 999 1000 return getFilteredNetworkInfo(nai, uid); 1001 } 1002 } 1003 1004 @Override 1005 public NetworkInfo[] getAllNetworkInfo() { 1006 enforceAccessPermission(); 1007 final int uid = Binder.getCallingUid(); 1008 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1009 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1010 networkType++) { 1011 if (getNetworkInfoForType(networkType) != null) { 1012 result.add(getFilteredNetworkInfo(networkType, uid)); 1013 } 1014 } 1015 return result.toArray(new NetworkInfo[result.size()]); 1016 } 1017 1018 @Override 1019 public Network getNetworkForType(int networkType) { 1020 enforceAccessPermission(); 1021 final int uid = Binder.getCallingUid(); 1022 if (isNetworkBlocked(networkType, uid)) { 1023 return null; 1024 } 1025 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1026 return (nai == null) ? null : nai.network; 1027 } 1028 1029 @Override 1030 public Network[] getAllNetworks() { 1031 enforceAccessPermission(); 1032 final ArrayList<Network> result = new ArrayList(); 1033 synchronized (mNetworkForNetId) { 1034 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1035 result.add(new Network(mNetworkForNetId.valueAt(i).network)); 1036 } 1037 } 1038 return result.toArray(new Network[result.size()]); 1039 } 1040 1041 @Override 1042 public boolean isNetworkSupported(int networkType) { 1043 enforceAccessPermission(); 1044 return (isNetworkTypeValid(networkType) && (getNetworkInfoForType(networkType) != null)); 1045 } 1046 1047 /** 1048 * Return LinkProperties for the active (i.e., connected) default 1049 * network interface. It is assumed that at most one default network 1050 * is active at a time. If more than one is active, it is indeterminate 1051 * which will be returned. 1052 * @return the ip properties for the active network, or {@code null} if 1053 * none is active 1054 */ 1055 @Override 1056 public LinkProperties getActiveLinkProperties() { 1057 return getLinkPropertiesForType(mActiveDefaultNetwork); 1058 } 1059 1060 @Override 1061 public LinkProperties getLinkPropertiesForType(int networkType) { 1062 enforceAccessPermission(); 1063 if (isNetworkTypeValid(networkType)) { 1064 return getLinkPropertiesForTypeInternal(networkType); 1065 } 1066 return null; 1067 } 1068 1069 // TODO - this should be ALL networks 1070 @Override 1071 public LinkProperties getLinkProperties(Network network) { 1072 enforceAccessPermission(); 1073 NetworkAgentInfo nai = null; 1074 synchronized (mNetworkForNetId) { 1075 nai = mNetworkForNetId.get(network.netId); 1076 } 1077 1078 if (nai != null) { 1079 synchronized (nai) { 1080 return new LinkProperties(nai.linkProperties); 1081 } 1082 } 1083 return null; 1084 } 1085 1086 @Override 1087 public NetworkCapabilities getNetworkCapabilities(Network network) { 1088 enforceAccessPermission(); 1089 NetworkAgentInfo nai = null; 1090 synchronized (mNetworkForNetId) { 1091 nai = mNetworkForNetId.get(network.netId); 1092 } 1093 if (nai != null) { 1094 synchronized (nai) { 1095 return new NetworkCapabilities(nai.networkCapabilities); 1096 } 1097 } 1098 return null; 1099 } 1100 1101 @Override 1102 public NetworkState[] getAllNetworkState() { 1103 enforceAccessPermission(); 1104 final int uid = Binder.getCallingUid(); 1105 final ArrayList<NetworkState> result = Lists.newArrayList(); 1106 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1107 networkType++) { 1108 if (getNetworkInfoForType(networkType) != null) { 1109 final NetworkInfo info = getFilteredNetworkInfo(networkType, uid); 1110 final LinkProperties lp = getLinkPropertiesForTypeInternal(networkType); 1111 final NetworkCapabilities netcap = getNetworkCapabilitiesForType(networkType); 1112 result.add(new NetworkState(info, lp, netcap)); 1113 } 1114 } 1115 return result.toArray(new NetworkState[result.size()]); 1116 } 1117 1118 private NetworkState getNetworkStateUnchecked(int networkType) { 1119 if (isNetworkTypeValid(networkType)) { 1120 NetworkInfo info = getNetworkInfoForType(networkType); 1121 if (info != null) { 1122 return new NetworkState(info, 1123 getLinkPropertiesForTypeInternal(networkType), 1124 getNetworkCapabilitiesForType(networkType)); 1125 } 1126 } 1127 return null; 1128 } 1129 1130 @Override 1131 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1132 enforceAccessPermission(); 1133 1134 final long token = Binder.clearCallingIdentity(); 1135 try { 1136 final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork); 1137 if (state != null) { 1138 try { 1139 return mPolicyManager.getNetworkQuotaInfo(state); 1140 } catch (RemoteException e) { 1141 } 1142 } 1143 return null; 1144 } finally { 1145 Binder.restoreCallingIdentity(token); 1146 } 1147 } 1148 1149 @Override 1150 public boolean isActiveNetworkMetered() { 1151 enforceAccessPermission(); 1152 final long token = Binder.clearCallingIdentity(); 1153 try { 1154 return isNetworkMeteredUnchecked(mActiveDefaultNetwork); 1155 } finally { 1156 Binder.restoreCallingIdentity(token); 1157 } 1158 } 1159 1160 private boolean isNetworkMeteredUnchecked(int networkType) { 1161 final NetworkState state = getNetworkStateUnchecked(networkType); 1162 if (state != null) { 1163 try { 1164 return mPolicyManager.isNetworkMetered(state); 1165 } catch (RemoteException e) { 1166 } 1167 } 1168 return false; 1169 } 1170 1171 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1172 @Override 1173 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1174 int deviceType = Integer.parseInt(label); 1175 sendDataActivityBroadcast(deviceType, active, tsNanos); 1176 } 1177 }; 1178 1179 /** 1180 * Ensure that a network route exists to deliver traffic to the specified 1181 * host via the specified network interface. 1182 * @param networkType the type of the network over which traffic to the 1183 * specified host is to be routed 1184 * @param hostAddress the IP address of the host to which the route is 1185 * desired 1186 * @return {@code true} on success, {@code false} on failure 1187 */ 1188 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1189 enforceChangePermission(); 1190 if (mProtectedNetworks.contains(networkType)) { 1191 enforceConnectivityInternalPermission(); 1192 } 1193 1194 InetAddress addr; 1195 try { 1196 addr = InetAddress.getByAddress(hostAddress); 1197 } catch (UnknownHostException e) { 1198 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1199 return false; 1200 } 1201 1202 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1203 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1204 return false; 1205 } 1206 1207 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1208 if (nai == null) { 1209 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1210 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1211 } else { 1212 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1213 } 1214 return false; 1215 } 1216 1217 DetailedState netState; 1218 synchronized (nai) { 1219 netState = nai.networkInfo.getDetailedState(); 1220 } 1221 1222 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1223 if (VDBG) { 1224 log("requestRouteToHostAddress on down network " 1225 + "(" + networkType + ") - dropped" 1226 + " netState=" + netState); 1227 } 1228 return false; 1229 } 1230 1231 final int uid = Binder.getCallingUid(); 1232 final long token = Binder.clearCallingIdentity(); 1233 try { 1234 LinkProperties lp; 1235 int netId; 1236 synchronized (nai) { 1237 lp = nai.linkProperties; 1238 netId = nai.network.netId; 1239 } 1240 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1241 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1242 return ok; 1243 } finally { 1244 Binder.restoreCallingIdentity(token); 1245 } 1246 } 1247 1248 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1249 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1250 if (bestRoute == null) { 1251 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1252 } else { 1253 String iface = bestRoute.getInterface(); 1254 if (bestRoute.getGateway().equals(addr)) { 1255 // if there is no better route, add the implied hostroute for our gateway 1256 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1257 } else { 1258 // if we will connect to this through another route, add a direct route 1259 // to it's gateway 1260 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1261 } 1262 } 1263 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1264 try { 1265 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1266 } catch (Exception e) { 1267 // never crash - catch them all 1268 if (DBG) loge("Exception trying to add a route: " + e); 1269 return false; 1270 } 1271 return true; 1272 } 1273 1274 public void setDataDependency(int networkType, boolean met) { 1275 enforceConnectivityInternalPermission(); 1276 1277 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1278 (met ? ENABLED : DISABLED), networkType)); 1279 } 1280 1281 private void handleSetDependencyMet(int networkType, boolean met) { 1282 if (mNetTrackers[networkType] != null) { 1283 if (DBG) { 1284 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1285 } 1286 mNetTrackers[networkType].setDependencyMet(met); 1287 } 1288 } 1289 1290 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1291 @Override 1292 public void onUidRulesChanged(int uid, int uidRules) { 1293 // caller is NPMS, since we only register with them 1294 if (LOGD_RULES) { 1295 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1296 } 1297 1298 synchronized (mRulesLock) { 1299 // skip update when we've already applied rules 1300 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1301 if (oldRules == uidRules) return; 1302 1303 mUidRules.put(uid, uidRules); 1304 } 1305 1306 // TODO: notify UID when it has requested targeted updates 1307 } 1308 1309 @Override 1310 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1311 // caller is NPMS, since we only register with them 1312 if (LOGD_RULES) { 1313 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1314 } 1315 1316 synchronized (mRulesLock) { 1317 mMeteredIfaces.clear(); 1318 for (String iface : meteredIfaces) { 1319 mMeteredIfaces.add(iface); 1320 } 1321 } 1322 } 1323 1324 @Override 1325 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1326 // caller is NPMS, since we only register with them 1327 if (LOGD_RULES) { 1328 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1329 } 1330 1331 // kick off connectivity change broadcast for active network, since 1332 // global background policy change is radical. 1333 final int networkType = mActiveDefaultNetwork; 1334 if (isNetworkTypeValid(networkType)) { 1335 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1336 if (tracker != null) { 1337 final NetworkInfo info = tracker.getNetworkInfo(); 1338 if (info != null && info.isConnected()) { 1339 sendConnectedBroadcast(info); 1340 } 1341 } 1342 } 1343 } 1344 }; 1345 1346 @Override 1347 public void setPolicyDataEnable(int networkType, boolean enabled) { 1348 // only someone like NPMS should only be calling us 1349 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1350 1351 mHandler.sendMessage(mHandler.obtainMessage( 1352 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1353 } 1354 1355 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1356 // TODO - handle this passing to factories 1357// if (isNetworkTypeValid(networkType)) { 1358// final NetworkStateTracker tracker = mNetTrackers[networkType]; 1359// if (tracker != null) { 1360// tracker.setPolicyDataEnable(enabled); 1361// } 1362// } 1363 } 1364 1365 private void enforceInternetPermission() { 1366 mContext.enforceCallingOrSelfPermission( 1367 android.Manifest.permission.INTERNET, 1368 "ConnectivityService"); 1369 } 1370 1371 private void enforceAccessPermission() { 1372 mContext.enforceCallingOrSelfPermission( 1373 android.Manifest.permission.ACCESS_NETWORK_STATE, 1374 "ConnectivityService"); 1375 } 1376 1377 private void enforceChangePermission() { 1378 mContext.enforceCallingOrSelfPermission( 1379 android.Manifest.permission.CHANGE_NETWORK_STATE, 1380 "ConnectivityService"); 1381 } 1382 1383 private void enforceTetherAccessPermission() { 1384 mContext.enforceCallingOrSelfPermission( 1385 android.Manifest.permission.ACCESS_NETWORK_STATE, 1386 "ConnectivityService"); 1387 } 1388 1389 private void enforceConnectivityInternalPermission() { 1390 mContext.enforceCallingOrSelfPermission( 1391 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1392 "ConnectivityService"); 1393 } 1394 1395 public void sendConnectedBroadcast(NetworkInfo info) { 1396 enforceConnectivityInternalPermission(); 1397 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1398 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1399 } 1400 1401 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 1402 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1403 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 1404 } 1405 1406 private void sendInetConditionBroadcast(NetworkInfo info) { 1407 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1408 } 1409 1410 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1411 if (mLockdownTracker != null) { 1412 info = mLockdownTracker.augmentNetworkInfo(info); 1413 } 1414 1415 Intent intent = new Intent(bcastType); 1416 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1417 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1418 if (info.isFailover()) { 1419 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1420 info.setFailover(false); 1421 } 1422 if (info.getReason() != null) { 1423 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1424 } 1425 if (info.getExtraInfo() != null) { 1426 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1427 info.getExtraInfo()); 1428 } 1429 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1430 return intent; 1431 } 1432 1433 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1434 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1435 } 1436 1437 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 1438 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 1439 } 1440 1441 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1442 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1443 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1444 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1445 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1446 final long ident = Binder.clearCallingIdentity(); 1447 try { 1448 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1449 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1450 } finally { 1451 Binder.restoreCallingIdentity(ident); 1452 } 1453 } 1454 1455 private void sendStickyBroadcast(Intent intent) { 1456 synchronized(this) { 1457 if (!mSystemReady) { 1458 mInitialBroadcast = new Intent(intent); 1459 } 1460 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1461 if (DBG) { 1462 log("sendStickyBroadcast: action=" + intent.getAction()); 1463 } 1464 1465 final long ident = Binder.clearCallingIdentity(); 1466 try { 1467 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1468 } finally { 1469 Binder.restoreCallingIdentity(ident); 1470 } 1471 } 1472 } 1473 1474 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 1475 if (delayMs <= 0) { 1476 sendStickyBroadcast(intent); 1477 } else { 1478 if (VDBG) { 1479 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 1480 + intent.getAction()); 1481 } 1482 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1483 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 1484 } 1485 } 1486 1487 void systemReady() { 1488 // start network sampling .. 1489 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 1490 intent.setPackage(mContext.getPackageName()); 1491 1492 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 1493 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 1494 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 1495 1496 loadGlobalProxy(); 1497 1498 synchronized(this) { 1499 mSystemReady = true; 1500 if (mInitialBroadcast != null) { 1501 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1502 mInitialBroadcast = null; 1503 } 1504 } 1505 // load the global proxy at startup 1506 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1507 1508 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1509 // for user to unlock device. 1510 if (!updateLockdownVpn()) { 1511 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1512 mContext.registerReceiver(mUserPresentReceiver, filter); 1513 } 1514 1515 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1516 1517 mPermissionMonitor.startMonitoring(); 1518 } 1519 1520 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1521 @Override 1522 public void onReceive(Context context, Intent intent) { 1523 // Try creating lockdown tracker, since user present usually means 1524 // unlocked keystore. 1525 if (updateLockdownVpn()) { 1526 mContext.unregisterReceiver(this); 1527 } 1528 } 1529 }; 1530 1531 /** @hide */ 1532 @Override 1533 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1534 enforceConnectivityInternalPermission(); 1535 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1536// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1537 } 1538 1539 /** 1540 * Setup data activity tracking for the given network. 1541 * 1542 * Every {@code setupDataActivityTracking} should be paired with a 1543 * {@link #removeDataActivityTracking} for cleanup. 1544 */ 1545 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1546 final String iface = networkAgent.linkProperties.getInterfaceName(); 1547 1548 final int timeout; 1549 int type = ConnectivityManager.TYPE_NONE; 1550 1551 if (networkAgent.networkCapabilities.hasTransport( 1552 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1553 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1554 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1555 5); 1556 type = ConnectivityManager.TYPE_MOBILE; 1557 } else if (networkAgent.networkCapabilities.hasTransport( 1558 NetworkCapabilities.TRANSPORT_WIFI)) { 1559 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1560 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1561 0); 1562 type = ConnectivityManager.TYPE_WIFI; 1563 } else { 1564 // do not track any other networks 1565 timeout = 0; 1566 } 1567 1568 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1569 try { 1570 mNetd.addIdleTimer(iface, timeout, type); 1571 } catch (Exception e) { 1572 // You shall not crash! 1573 loge("Exception in setupDataActivityTracking " + e); 1574 } 1575 } 1576 } 1577 1578 /** 1579 * Remove data activity tracking when network disconnects. 1580 */ 1581 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1582 final String iface = networkAgent.linkProperties.getInterfaceName(); 1583 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1584 1585 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1586 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1587 try { 1588 // the call fails silently if no idletimer setup for this interface 1589 mNetd.removeIdleTimer(iface); 1590 } catch (Exception e) { 1591 loge("Exception in removeDataActivityTracking " + e); 1592 } 1593 } 1594 } 1595 1596 /** 1597 * Reads the network specific MTU size from reources. 1598 * and set it on it's iface. 1599 */ 1600 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1601 final String iface = newLp.getInterfaceName(); 1602 final int mtu = newLp.getMtu(); 1603 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1604 if (VDBG) log("identical MTU - not setting"); 1605 return; 1606 } 1607 1608 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1609 loge("Unexpected mtu value: " + mtu + ", " + iface); 1610 return; 1611 } 1612 1613 // Cannot set MTU without interface name 1614 if (TextUtils.isEmpty(iface)) { 1615 loge("Setting MTU size with null iface."); 1616 return; 1617 } 1618 1619 try { 1620 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1621 mNetd.setMtu(iface, mtu); 1622 } catch (Exception e) { 1623 Slog.e(TAG, "exception in setMtu()" + e); 1624 } 1625 } 1626 1627 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1628 1629 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1630 if (isDefaultNetwork(nai) == false) { 1631 return; 1632 } 1633 1634 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1635 String[] values = null; 1636 if (tcpBufferSizes != null) { 1637 values = tcpBufferSizes.split(","); 1638 } 1639 1640 if (values == null || values.length != 6) { 1641 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1642 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1643 values = tcpBufferSizes.split(","); 1644 } 1645 1646 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1647 1648 try { 1649 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1650 1651 final String prefix = "/sys/kernel/ipv4/tcp_"; 1652 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1653 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1654 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1655 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1656 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1657 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1658 mCurrentTcpBufferSizes = tcpBufferSizes; 1659 } catch (IOException e) { 1660 loge("Can't set TCP buffer sizes:" + e); 1661 } 1662 1663 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 1664 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 1665 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1666 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 1667 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1668 if (rwndValue != 0) { 1669 SystemProperties.set(sysctlKey, rwndValue.toString()); 1670 } 1671 } 1672 1673 private void flushVmDnsCache() { 1674 /* 1675 * Tell the VMs to toss their DNS caches 1676 */ 1677 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1678 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1679 /* 1680 * Connectivity events can happen before boot has completed ... 1681 */ 1682 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1683 final long ident = Binder.clearCallingIdentity(); 1684 try { 1685 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1686 } finally { 1687 Binder.restoreCallingIdentity(ident); 1688 } 1689 } 1690 1691 @Override 1692 public int getRestoreDefaultNetworkDelay(int networkType) { 1693 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1694 NETWORK_RESTORE_DELAY_PROP_NAME); 1695 if(restoreDefaultNetworkDelayStr != null && 1696 restoreDefaultNetworkDelayStr.length() != 0) { 1697 try { 1698 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1699 } catch (NumberFormatException e) { 1700 } 1701 } 1702 // if the system property isn't set, use the value for the apn type 1703 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1704 1705 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1706 (mNetConfigs[networkType] != null)) { 1707 ret = mNetConfigs[networkType].restoreTime; 1708 } 1709 return ret; 1710 } 1711 1712 @Override 1713 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1714 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1715 if (mContext.checkCallingOrSelfPermission( 1716 android.Manifest.permission.DUMP) 1717 != PackageManager.PERMISSION_GRANTED) { 1718 pw.println("Permission Denial: can't dump ConnectivityService " + 1719 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1720 Binder.getCallingUid()); 1721 return; 1722 } 1723 1724 pw.println("NetworkFactories for:"); 1725 pw.increaseIndent(); 1726 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1727 pw.println(nfi.name); 1728 } 1729 pw.decreaseIndent(); 1730 pw.println(); 1731 1732 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1733 pw.print("Active default network: "); 1734 if (defaultNai == null) { 1735 pw.println("none"); 1736 } else { 1737 pw.println(defaultNai.network.netId); 1738 } 1739 pw.println(); 1740 1741 pw.println("Current Networks:"); 1742 pw.increaseIndent(); 1743 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1744 pw.println(nai.toString()); 1745 pw.increaseIndent(); 1746 pw.println("Requests:"); 1747 pw.increaseIndent(); 1748 for (int i = 0; i < nai.networkRequests.size(); i++) { 1749 pw.println(nai.networkRequests.valueAt(i).toString()); 1750 } 1751 pw.decreaseIndent(); 1752 pw.println("Lingered:"); 1753 pw.increaseIndent(); 1754 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1755 pw.decreaseIndent(); 1756 pw.decreaseIndent(); 1757 } 1758 pw.decreaseIndent(); 1759 pw.println(); 1760 1761 pw.println("Network Requests:"); 1762 pw.increaseIndent(); 1763 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1764 pw.println(nri.toString()); 1765 } 1766 pw.println(); 1767 pw.decreaseIndent(); 1768 1769 pw.print("mActiveDefaultNetwork: " + mActiveDefaultNetwork); 1770 if (mActiveDefaultNetwork != TYPE_NONE) { 1771 NetworkInfo activeNetworkInfo = getActiveNetworkInfo(); 1772 if (activeNetworkInfo != null) { 1773 pw.print(" " + activeNetworkInfo.getState() + 1774 "/" + activeNetworkInfo.getDetailedState()); 1775 } 1776 } 1777 pw.println(); 1778 1779 pw.println("mLegacyTypeTracker:"); 1780 pw.increaseIndent(); 1781 mLegacyTypeTracker.dump(pw); 1782 pw.decreaseIndent(); 1783 pw.println(); 1784 1785 synchronized (this) { 1786 pw.println("NetworkTransitionWakeLock is currently " + 1787 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 1788 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 1789 } 1790 pw.println(); 1791 1792 mTethering.dump(fd, pw, args); 1793 1794 if (mInetLog != null) { 1795 pw.println(); 1796 pw.println("Inet condition reports:"); 1797 pw.increaseIndent(); 1798 for(int i = 0; i < mInetLog.size(); i++) { 1799 pw.println(mInetLog.get(i)); 1800 } 1801 pw.decreaseIndent(); 1802 } 1803 } 1804 1805 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1806 if (nai.network == null) return false; 1807 final NetworkAgentInfo officialNai; 1808 synchronized (mNetworkForNetId) { 1809 officialNai = mNetworkForNetId.get(nai.network.netId); 1810 } 1811 if (officialNai != null && officialNai.equals(nai)) return true; 1812 if (officialNai != null || VDBG) { 1813 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1814 " - " + nai); 1815 } 1816 return false; 1817 } 1818 1819 private boolean isRequest(NetworkRequest request) { 1820 return mNetworkRequests.get(request).isRequest; 1821 } 1822 1823 // must be stateless - things change under us. 1824 private class NetworkStateTrackerHandler extends Handler { 1825 public NetworkStateTrackerHandler(Looper looper) { 1826 super(looper); 1827 } 1828 1829 @Override 1830 public void handleMessage(Message msg) { 1831 NetworkInfo info; 1832 switch (msg.what) { 1833 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1834 handleAsyncChannelHalfConnect(msg); 1835 break; 1836 } 1837 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1838 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1839 if (nai != null) nai.asyncChannel.disconnect(); 1840 break; 1841 } 1842 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1843 handleAsyncChannelDisconnected(msg); 1844 break; 1845 } 1846 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1847 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1848 if (nai == null) { 1849 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1850 } else { 1851 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1852 } 1853 break; 1854 } 1855 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1856 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1857 if (nai == null) { 1858 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1859 } else { 1860 if (VDBG) { 1861 log("Update of LinkProperties for " + nai.name() + 1862 "; created=" + nai.created); 1863 } 1864 LinkProperties oldLp = nai.linkProperties; 1865 synchronized (nai) { 1866 nai.linkProperties = (LinkProperties)msg.obj; 1867 } 1868 if (nai.created) updateLinkProperties(nai, oldLp); 1869 } 1870 break; 1871 } 1872 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1873 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1874 if (nai == null) { 1875 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1876 break; 1877 } 1878 info = (NetworkInfo) msg.obj; 1879 updateNetworkInfo(nai, info); 1880 break; 1881 } 1882 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1883 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1884 if (nai == null) { 1885 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1886 break; 1887 } 1888 Integer score = (Integer) msg.obj; 1889 if (score != null) updateNetworkScore(nai, score.intValue()); 1890 break; 1891 } 1892 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1893 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1894 if (nai == null) { 1895 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1896 break; 1897 } 1898 try { 1899 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1900 } catch (Exception e) { 1901 // Never crash! 1902 loge("Exception in addVpnUidRanges: " + e); 1903 } 1904 break; 1905 } 1906 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1907 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1908 if (nai == null) { 1909 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1910 break; 1911 } 1912 try { 1913 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1914 } catch (Exception e) { 1915 // Never crash! 1916 loge("Exception in removeVpnUidRanges: " + e); 1917 } 1918 break; 1919 } 1920 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1921 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1922 if (nai == null) { 1923 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1924 break; 1925 } 1926 if (nai.created && !nai.networkMisc.explicitlySelected) { 1927 loge("ERROR: created network explicitly selected."); 1928 } 1929 nai.networkMisc.explicitlySelected = true; 1930 break; 1931 } 1932 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1933 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1934 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_VALIDATED")) { 1935 boolean valid = (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1936 if (valid) { 1937 if (DBG) log("Validated " + nai.name()); 1938 final boolean previouslyValidated = nai.validated; 1939 final int previousScore = nai.getCurrentScore(); 1940 nai.validated = true; 1941 rematchNetworkAndRequests(nai, !previouslyValidated); 1942 // If score has changed, rebroadcast to NetworkFactories. b/17726566 1943 if (nai.getCurrentScore() != previousScore) { 1944 sendUpdatedScoreToFactories(nai); 1945 } 1946 } 1947 updateInetCondition(nai, valid); 1948 // Let the NetworkAgent know the state of its network 1949 nai.asyncChannel.sendMessage( 1950 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 1951 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 1952 0, null); 1953 } 1954 break; 1955 } 1956 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 1957 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1958 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 1959 handleLingerComplete(nai); 1960 } 1961 break; 1962 } 1963 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 1964 if (msg.arg1 == 0) { 1965 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 1966 } else { 1967 NetworkAgentInfo nai = null; 1968 synchronized (mNetworkForNetId) { 1969 nai = mNetworkForNetId.get(msg.arg2); 1970 } 1971 if (nai == null) { 1972 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 1973 break; 1974 } 1975 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 1976 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 1977 } 1978 break; 1979 } 1980 case NetworkStateTracker.EVENT_STATE_CHANGED: { 1981 info = (NetworkInfo) msg.obj; 1982 NetworkInfo.State state = info.getState(); 1983 1984 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 1985 (state == NetworkInfo.State.DISCONNECTED) || 1986 (state == NetworkInfo.State.SUSPENDED)) { 1987 log("ConnectivityChange for " + 1988 info.getTypeName() + ": " + 1989 state + "/" + info.getDetailedState()); 1990 } 1991 1992 EventLogTags.writeConnectivityStateChanged( 1993 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 1994 1995 if (info.isConnectedToProvisioningNetwork()) { 1996 /** 1997 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 1998 * for now its an in between network, its a network that 1999 * is actually a default network but we don't want it to be 2000 * announced as such to keep background applications from 2001 * trying to use it. It turns out that some still try so we 2002 * take the additional step of clearing any default routes 2003 * to the link that may have incorrectly setup by the lower 2004 * levels. 2005 */ 2006 LinkProperties lp = getLinkPropertiesForTypeInternal(info.getType()); 2007 if (DBG) { 2008 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 2009 } 2010 2011 // Clear any default routes setup by the radio so 2012 // any activity by applications trying to use this 2013 // connection will fail until the provisioning network 2014 // is enabled. 2015 /* 2016 for (RouteInfo r : lp.getRoutes()) { 2017 removeRoute(lp, r, TO_DEFAULT_TABLE, 2018 mNetTrackers[info.getType()].getNetwork().netId); 2019 } 2020 */ 2021 } else if (state == NetworkInfo.State.DISCONNECTED) { 2022 } else if (state == NetworkInfo.State.SUSPENDED) { 2023 } else if (state == NetworkInfo.State.CONNECTED) { 2024 // handleConnect(info); 2025 } 2026 notifyLockdownVpn(null); 2027 break; 2028 } 2029 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 2030 info = (NetworkInfo) msg.obj; 2031 // TODO: Temporary allowing network configuration 2032 // change not resetting sockets. 2033 // @see bug/4455071 2034 /* 2035 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 2036 false); 2037 */ 2038 break; 2039 } 2040 } 2041 } 2042 } 2043 2044 private void handleAsyncChannelHalfConnect(Message msg) { 2045 AsyncChannel ac = (AsyncChannel) msg.obj; 2046 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2047 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2048 if (VDBG) log("NetworkFactory connected"); 2049 // A network factory has connected. Send it all current NetworkRequests. 2050 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2051 if (nri.isRequest == false) continue; 2052 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2053 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2054 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2055 } 2056 } else { 2057 loge("Error connecting NetworkFactory"); 2058 mNetworkFactoryInfos.remove(msg.obj); 2059 } 2060 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2061 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2062 if (VDBG) log("NetworkAgent connected"); 2063 // A network agent has requested a connection. Establish the connection. 2064 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2065 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2066 } else { 2067 loge("Error connecting NetworkAgent"); 2068 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2069 if (nai != null) { 2070 synchronized (mNetworkForNetId) { 2071 mNetworkForNetId.remove(nai.network.netId); 2072 } 2073 // Just in case. 2074 mLegacyTypeTracker.remove(nai); 2075 } 2076 } 2077 } 2078 } 2079 private void handleAsyncChannelDisconnected(Message msg) { 2080 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2081 if (nai != null) { 2082 if (DBG) { 2083 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2084 } 2085 // A network agent has disconnected. 2086 if (nai.created) { 2087 // Tell netd to clean up the configuration for this network 2088 // (routing rules, DNS, etc). 2089 try { 2090 mNetd.removeNetwork(nai.network.netId); 2091 } catch (Exception e) { 2092 loge("Exception removing network: " + e); 2093 } 2094 } 2095 // TODO - if we move the logic to the network agent (have them disconnect 2096 // because they lost all their requests or because their score isn't good) 2097 // then they would disconnect organically, report their new state and then 2098 // disconnect the channel. 2099 if (nai.networkInfo.isConnected()) { 2100 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2101 null, null); 2102 } 2103 if (isDefaultNetwork(nai)) { 2104 mDefaultInetConditionPublished = 0; 2105 } 2106 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2107 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2108 mNetworkAgentInfos.remove(msg.replyTo); 2109 updateClat(null, nai.linkProperties, nai); 2110 mLegacyTypeTracker.remove(nai); 2111 synchronized (mNetworkForNetId) { 2112 mNetworkForNetId.remove(nai.network.netId); 2113 } 2114 // Since we've lost the network, go through all the requests that 2115 // it was satisfying and see if any other factory can satisfy them. 2116 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2117 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2118 for (int i = 0; i < nai.networkRequests.size(); i++) { 2119 NetworkRequest request = nai.networkRequests.valueAt(i); 2120 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2121 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2122 if (DBG) { 2123 log("Checking for replacement network to handle request " + request ); 2124 } 2125 mNetworkForRequestId.remove(request.requestId); 2126 sendUpdatedScoreToFactories(request, 0); 2127 NetworkAgentInfo alternative = null; 2128 for (Map.Entry entry : mNetworkAgentInfos.entrySet()) { 2129 NetworkAgentInfo existing = (NetworkAgentInfo)entry.getValue(); 2130 if (existing.networkInfo.isConnected() && 2131 request.networkCapabilities.satisfiedByNetworkCapabilities( 2132 existing.networkCapabilities) && 2133 (alternative == null || 2134 alternative.getCurrentScore() < existing.getCurrentScore())) { 2135 alternative = existing; 2136 } 2137 } 2138 if (alternative != null) { 2139 if (DBG) log(" found replacement in " + alternative.name()); 2140 if (!toActivate.contains(alternative)) { 2141 toActivate.add(alternative); 2142 } 2143 } 2144 } 2145 } 2146 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2147 removeDataActivityTracking(nai); 2148 mActiveDefaultNetwork = ConnectivityManager.TYPE_NONE; 2149 notifyLockdownVpn(nai); 2150 requestNetworkTransitionWakelock(nai.name()); 2151 } 2152 for (NetworkAgentInfo networkToActivate : toActivate) { 2153 networkToActivate.networkLingered.clear(); 2154 networkToActivate.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2155 rematchNetworkAndRequests(networkToActivate, false); 2156 } 2157 } 2158 } 2159 2160 // If this method proves to be too slow then we can maintain a separate 2161 // pendingIntent => NetworkRequestInfo map. 2162 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2163 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2164 Intent intent = pendingIntent.getIntent(); 2165 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2166 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2167 if (existingPendingIntent != null && 2168 existingPendingIntent.getIntent().filterEquals(intent)) { 2169 return entry.getValue(); 2170 } 2171 } 2172 return null; 2173 } 2174 2175 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2176 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2177 2178 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2179 if (existingRequest != null) { // remove the existing request. 2180 if (DBG) log("Replacing " + existingRequest.request + " with " 2181 + nri.request + " because their intents matched."); 2182 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2183 } 2184 handleRegisterNetworkRequest(msg); 2185 } 2186 2187 private void handleRegisterNetworkRequest(Message msg) { 2188 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2189 final NetworkCapabilities newCap = nri.request.networkCapabilities; 2190 int score = 0; 2191 2192 mNetworkRequests.put(nri.request, nri); 2193 2194 // Check for the best currently alive network that satisfies this request 2195 NetworkAgentInfo bestNetwork = null; 2196 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2197 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2198 if (newCap.satisfiedByNetworkCapabilities(network.networkCapabilities)) { 2199 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2200 if ((bestNetwork == null) || 2201 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2202 if (!nri.isRequest) { 2203 // Not setting bestNetwork here as a listening NetworkRequest may be 2204 // satisfied by multiple Networks. Instead the request is added to 2205 // each satisfying Network and notified about each. 2206 network.addRequest(nri.request); 2207 notifyNetworkCallback(network, nri); 2208 } else { 2209 bestNetwork = network; 2210 } 2211 } 2212 } 2213 } 2214 if (bestNetwork != null) { 2215 if (DBG) log("using " + bestNetwork.name()); 2216 if (bestNetwork.networkInfo.isConnected()) { 2217 // Cancel any lingering so the linger timeout doesn't teardown this network 2218 // even though we have a request for it. 2219 bestNetwork.networkLingered.clear(); 2220 bestNetwork.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2221 } 2222 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2223 bestNetwork.addRequest(nri.request); 2224 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2225 notifyNetworkCallback(bestNetwork, nri); 2226 score = bestNetwork.getCurrentScore(); 2227 if (nri.request.legacyType != TYPE_NONE) { 2228 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2229 } 2230 } 2231 2232 if (nri.isRequest) { 2233 if (DBG) log("sending new NetworkRequest to factories"); 2234 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2235 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2236 0, nri.request); 2237 } 2238 } 2239 } 2240 2241 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2242 int callingUid) { 2243 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2244 if (nri != null) { 2245 handleReleaseNetworkRequest(nri.request, callingUid); 2246 } 2247 } 2248 2249 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2250 NetworkRequestInfo nri = mNetworkRequests.get(request); 2251 if (nri != null) { 2252 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2253 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2254 return; 2255 } 2256 if (DBG) log("releasing NetworkRequest " + request); 2257 nri.unlinkDeathRecipient(); 2258 mNetworkRequests.remove(request); 2259 if (nri.isRequest) { 2260 // Find all networks that are satisfying this request and remove the request 2261 // from their request lists. 2262 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2263 if (nai.networkRequests.get(nri.request.requestId) != null) { 2264 nai.networkRequests.remove(nri.request.requestId); 2265 if (DBG) { 2266 log(" Removing from current network " + nai.name() + 2267 ", leaving " + nai.networkRequests.size() + 2268 " requests."); 2269 } 2270 // check if has any requests remaining and if not, 2271 // disconnect (unless it's a VPN). 2272 boolean keep = nai.isVPN(); 2273 for (int i = 0; i < nai.networkRequests.size() && !keep; i++) { 2274 NetworkRequest r = nai.networkRequests.valueAt(i); 2275 if (isRequest(r)) keep = true; 2276 } 2277 if (!keep) { 2278 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2279 nai.asyncChannel.disconnect(); 2280 } 2281 } 2282 } 2283 2284 // Maintain the illusion. When this request arrived, we might have pretended 2285 // that a network connected to serve it, even though the network was already 2286 // connected. Now that this request has gone away, we might have to pretend 2287 // that the network disconnected. LegacyTypeTracker will generate that 2288 // phantom disconnect for this type. 2289 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2290 if (nai != null) { 2291 mNetworkForRequestId.remove(nri.request.requestId); 2292 if (nri.request.legacyType != TYPE_NONE) { 2293 mLegacyTypeTracker.remove(nri.request.legacyType, nai); 2294 } 2295 } 2296 2297 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2298 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2299 nri.request); 2300 } 2301 } else { 2302 // listens don't have a singular affectedNetwork. Check all networks to see 2303 // if this listen request applies and remove it. 2304 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2305 nai.networkRequests.remove(nri.request.requestId); 2306 } 2307 } 2308 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2309 } 2310 } 2311 2312 private class InternalHandler extends Handler { 2313 public InternalHandler(Looper looper) { 2314 super(looper); 2315 } 2316 2317 @Override 2318 public void handleMessage(Message msg) { 2319 switch (msg.what) { 2320 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2321 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2322 String causedBy = null; 2323 synchronized (ConnectivityService.this) { 2324 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2325 mNetTransitionWakeLock.isHeld()) { 2326 mNetTransitionWakeLock.release(); 2327 causedBy = mNetTransitionWakeLockCausedBy; 2328 } else { 2329 break; 2330 } 2331 } 2332 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2333 log("Failed to find a new network - expiring NetTransition Wakelock"); 2334 } else { 2335 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2336 " cleared because we found a replacement network"); 2337 } 2338 break; 2339 } 2340 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2341 handleDeprecatedGlobalHttpProxy(); 2342 break; 2343 } 2344 case EVENT_SET_DEPENDENCY_MET: { 2345 boolean met = (msg.arg1 == ENABLED); 2346 handleSetDependencyMet(msg.arg2, met); 2347 break; 2348 } 2349 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2350 Intent intent = (Intent)msg.obj; 2351 sendStickyBroadcast(intent); 2352 break; 2353 } 2354 case EVENT_SET_POLICY_DATA_ENABLE: { 2355 final int networkType = msg.arg1; 2356 final boolean enabled = msg.arg2 == ENABLED; 2357 handleSetPolicyDataEnable(networkType, enabled); 2358 break; 2359 } 2360 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 2361 int tag = mEnableFailFastMobileDataTag.get(); 2362 if (msg.arg1 == tag) { 2363 MobileDataStateTracker mobileDst = 2364 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 2365 if (mobileDst != null) { 2366 mobileDst.setEnableFailFastMobileData(msg.arg2); 2367 } 2368 } else { 2369 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 2370 + " != tag:" + tag); 2371 } 2372 break; 2373 } 2374 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 2375 handleNetworkSamplingTimeout(); 2376 break; 2377 } 2378 case EVENT_PROXY_HAS_CHANGED: { 2379 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2380 break; 2381 } 2382 case EVENT_REGISTER_NETWORK_FACTORY: { 2383 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2384 break; 2385 } 2386 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2387 handleUnregisterNetworkFactory((Messenger)msg.obj); 2388 break; 2389 } 2390 case EVENT_REGISTER_NETWORK_AGENT: { 2391 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2392 break; 2393 } 2394 case EVENT_REGISTER_NETWORK_REQUEST: 2395 case EVENT_REGISTER_NETWORK_LISTENER: { 2396 handleRegisterNetworkRequest(msg); 2397 break; 2398 } 2399 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: { 2400 handleRegisterNetworkRequestWithIntent(msg); 2401 break; 2402 } 2403 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2404 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2405 break; 2406 } 2407 case EVENT_RELEASE_NETWORK_REQUEST: { 2408 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2409 break; 2410 } 2411 case EVENT_SYSTEM_READY: { 2412 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2413 nai.networkMonitor.systemReady = true; 2414 } 2415 break; 2416 } 2417 } 2418 } 2419 } 2420 2421 // javadoc from interface 2422 public int tether(String iface) { 2423 ConnectivityManager.enforceTetherChangePermission(mContext); 2424 if (isTetheringSupported()) { 2425 return mTethering.tether(iface); 2426 } else { 2427 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2428 } 2429 } 2430 2431 // javadoc from interface 2432 public int untether(String iface) { 2433 ConnectivityManager.enforceTetherChangePermission(mContext); 2434 2435 if (isTetheringSupported()) { 2436 return mTethering.untether(iface); 2437 } else { 2438 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2439 } 2440 } 2441 2442 // javadoc from interface 2443 public int getLastTetherError(String iface) { 2444 enforceTetherAccessPermission(); 2445 2446 if (isTetheringSupported()) { 2447 return mTethering.getLastTetherError(iface); 2448 } else { 2449 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2450 } 2451 } 2452 2453 // TODO - proper iface API for selection by property, inspection, etc 2454 public String[] getTetherableUsbRegexs() { 2455 enforceTetherAccessPermission(); 2456 if (isTetheringSupported()) { 2457 return mTethering.getTetherableUsbRegexs(); 2458 } else { 2459 return new String[0]; 2460 } 2461 } 2462 2463 public String[] getTetherableWifiRegexs() { 2464 enforceTetherAccessPermission(); 2465 if (isTetheringSupported()) { 2466 return mTethering.getTetherableWifiRegexs(); 2467 } else { 2468 return new String[0]; 2469 } 2470 } 2471 2472 public String[] getTetherableBluetoothRegexs() { 2473 enforceTetherAccessPermission(); 2474 if (isTetheringSupported()) { 2475 return mTethering.getTetherableBluetoothRegexs(); 2476 } else { 2477 return new String[0]; 2478 } 2479 } 2480 2481 public int setUsbTethering(boolean enable) { 2482 ConnectivityManager.enforceTetherChangePermission(mContext); 2483 if (isTetheringSupported()) { 2484 return mTethering.setUsbTethering(enable); 2485 } else { 2486 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2487 } 2488 } 2489 2490 // TODO - move iface listing, queries, etc to new module 2491 // javadoc from interface 2492 public String[] getTetherableIfaces() { 2493 enforceTetherAccessPermission(); 2494 return mTethering.getTetherableIfaces(); 2495 } 2496 2497 public String[] getTetheredIfaces() { 2498 enforceTetherAccessPermission(); 2499 return mTethering.getTetheredIfaces(); 2500 } 2501 2502 public String[] getTetheringErroredIfaces() { 2503 enforceTetherAccessPermission(); 2504 return mTethering.getErroredIfaces(); 2505 } 2506 2507 public String[] getTetheredDhcpRanges() { 2508 enforceConnectivityInternalPermission(); 2509 return mTethering.getTetheredDhcpRanges(); 2510 } 2511 2512 // if ro.tether.denied = true we default to no tethering 2513 // gservices could set the secure setting to 1 though to enable it on a build where it 2514 // had previously been turned off. 2515 public boolean isTetheringSupported() { 2516 enforceTetherAccessPermission(); 2517 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2518 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2519 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2520 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2521 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2522 mTethering.getTetherableWifiRegexs().length != 0 || 2523 mTethering.getTetherableBluetoothRegexs().length != 0) && 2524 mTethering.getUpstreamIfaceTypes().length != 0); 2525 } 2526 2527 // Called when we lose the default network and have no replacement yet. 2528 // This will automatically be cleared after X seconds or a new default network 2529 // becomes CONNECTED, whichever happens first. The timer is started by the 2530 // first caller and not restarted by subsequent callers. 2531 private void requestNetworkTransitionWakelock(String forWhom) { 2532 int serialNum = 0; 2533 synchronized (this) { 2534 if (mNetTransitionWakeLock.isHeld()) return; 2535 serialNum = ++mNetTransitionWakeLockSerialNumber; 2536 mNetTransitionWakeLock.acquire(); 2537 mNetTransitionWakeLockCausedBy = forWhom; 2538 } 2539 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2540 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2541 mNetTransitionWakeLockTimeout); 2542 return; 2543 } 2544 2545 // 100 percent is full good, 0 is full bad. 2546 public void reportInetCondition(int networkType, int percentage) { 2547 if (percentage > 50) return; // don't handle good network reports 2548 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2549 if (nai != null) reportBadNetwork(nai.network); 2550 } 2551 2552 public void reportBadNetwork(Network network) { 2553 enforceAccessPermission(); 2554 enforceInternetPermission(); 2555 2556 if (network == null) return; 2557 2558 final int uid = Binder.getCallingUid(); 2559 NetworkAgentInfo nai = null; 2560 synchronized (mNetworkForNetId) { 2561 nai = mNetworkForNetId.get(network.netId); 2562 } 2563 if (nai == null) return; 2564 if (DBG) log("reportBadNetwork(" + nai.name() + ") by " + uid); 2565 synchronized (nai) { 2566 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2567 // which isn't meant to work on uncreated networks. 2568 if (!nai.created) return; 2569 2570 if (isNetworkBlocked(nai, uid)) return; 2571 2572 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2573 } 2574 } 2575 2576 public ProxyInfo getProxy() { 2577 // this information is already available as a world read/writable jvm property 2578 // so this API change wouldn't have a benifit. It also breaks the passing 2579 // of proxy info to all the JVMs. 2580 // enforceAccessPermission(); 2581 synchronized (mProxyLock) { 2582 ProxyInfo ret = mGlobalProxy; 2583 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2584 return ret; 2585 } 2586 } 2587 2588 public void setGlobalProxy(ProxyInfo proxyProperties) { 2589 enforceConnectivityInternalPermission(); 2590 2591 synchronized (mProxyLock) { 2592 if (proxyProperties == mGlobalProxy) return; 2593 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2594 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2595 2596 String host = ""; 2597 int port = 0; 2598 String exclList = ""; 2599 String pacFileUrl = ""; 2600 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2601 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2602 if (!proxyProperties.isValid()) { 2603 if (DBG) 2604 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2605 return; 2606 } 2607 mGlobalProxy = new ProxyInfo(proxyProperties); 2608 host = mGlobalProxy.getHost(); 2609 port = mGlobalProxy.getPort(); 2610 exclList = mGlobalProxy.getExclusionListAsString(); 2611 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2612 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2613 } 2614 } else { 2615 mGlobalProxy = null; 2616 } 2617 ContentResolver res = mContext.getContentResolver(); 2618 final long token = Binder.clearCallingIdentity(); 2619 try { 2620 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2621 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2622 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2623 exclList); 2624 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2625 } finally { 2626 Binder.restoreCallingIdentity(token); 2627 } 2628 2629 if (mGlobalProxy == null) { 2630 proxyProperties = mDefaultProxy; 2631 } 2632 sendProxyBroadcast(proxyProperties); 2633 } 2634 } 2635 2636 private void loadGlobalProxy() { 2637 ContentResolver res = mContext.getContentResolver(); 2638 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2639 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2640 String exclList = Settings.Global.getString(res, 2641 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2642 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2643 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2644 ProxyInfo proxyProperties; 2645 if (!TextUtils.isEmpty(pacFileUrl)) { 2646 proxyProperties = new ProxyInfo(pacFileUrl); 2647 } else { 2648 proxyProperties = new ProxyInfo(host, port, exclList); 2649 } 2650 if (!proxyProperties.isValid()) { 2651 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2652 return; 2653 } 2654 2655 synchronized (mProxyLock) { 2656 mGlobalProxy = proxyProperties; 2657 } 2658 } 2659 } 2660 2661 public ProxyInfo getGlobalProxy() { 2662 // this information is already available as a world read/writable jvm property 2663 // so this API change wouldn't have a benifit. It also breaks the passing 2664 // of proxy info to all the JVMs. 2665 // enforceAccessPermission(); 2666 synchronized (mProxyLock) { 2667 return mGlobalProxy; 2668 } 2669 } 2670 2671 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2672 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2673 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2674 proxy = null; 2675 } 2676 synchronized (mProxyLock) { 2677 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2678 if (mDefaultProxy == proxy) return; // catches repeated nulls 2679 if (proxy != null && !proxy.isValid()) { 2680 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2681 return; 2682 } 2683 2684 // This call could be coming from the PacManager, containing the port of the local 2685 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2686 // global (to get the correct local port), and send a broadcast. 2687 // TODO: Switch PacManager to have its own message to send back rather than 2688 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2689 if ((mGlobalProxy != null) && (proxy != null) 2690 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2691 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2692 mGlobalProxy = proxy; 2693 sendProxyBroadcast(mGlobalProxy); 2694 return; 2695 } 2696 mDefaultProxy = proxy; 2697 2698 if (mGlobalProxy != null) return; 2699 if (!mDefaultProxyDisabled) { 2700 sendProxyBroadcast(proxy); 2701 } 2702 } 2703 } 2704 2705 private void handleDeprecatedGlobalHttpProxy() { 2706 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2707 Settings.Global.HTTP_PROXY); 2708 if (!TextUtils.isEmpty(proxy)) { 2709 String data[] = proxy.split(":"); 2710 if (data.length == 0) { 2711 return; 2712 } 2713 2714 String proxyHost = data[0]; 2715 int proxyPort = 8080; 2716 if (data.length > 1) { 2717 try { 2718 proxyPort = Integer.parseInt(data[1]); 2719 } catch (NumberFormatException e) { 2720 return; 2721 } 2722 } 2723 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2724 setGlobalProxy(p); 2725 } 2726 } 2727 2728 private void sendProxyBroadcast(ProxyInfo proxy) { 2729 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2730 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2731 if (DBG) log("sending Proxy Broadcast for " + proxy); 2732 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2733 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2734 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2735 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2736 final long ident = Binder.clearCallingIdentity(); 2737 try { 2738 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2739 } finally { 2740 Binder.restoreCallingIdentity(ident); 2741 } 2742 } 2743 2744 private static class SettingsObserver extends ContentObserver { 2745 private int mWhat; 2746 private Handler mHandler; 2747 SettingsObserver(Handler handler, int what) { 2748 super(handler); 2749 mHandler = handler; 2750 mWhat = what; 2751 } 2752 2753 void observe(Context context) { 2754 ContentResolver resolver = context.getContentResolver(); 2755 resolver.registerContentObserver(Settings.Global.getUriFor( 2756 Settings.Global.HTTP_PROXY), false, this); 2757 } 2758 2759 @Override 2760 public void onChange(boolean selfChange) { 2761 mHandler.obtainMessage(mWhat).sendToTarget(); 2762 } 2763 } 2764 2765 private static void log(String s) { 2766 Slog.d(TAG, s); 2767 } 2768 2769 private static void loge(String s) { 2770 Slog.e(TAG, s); 2771 } 2772 2773 int convertFeatureToNetworkType(int networkType, String feature) { 2774 int usedNetworkType = networkType; 2775 2776 if(networkType == ConnectivityManager.TYPE_MOBILE) { 2777 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 2778 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 2779 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 2780 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 2781 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 2782 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 2783 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 2784 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 2785 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 2786 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 2787 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 2788 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 2789 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 2790 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 2791 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 2792 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_EMERGENCY)) { 2793 usedNetworkType = ConnectivityManager.TYPE_MOBILE_EMERGENCY; 2794 } else { 2795 Slog.e(TAG, "Can't match any mobile netTracker!"); 2796 } 2797 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 2798 if (TextUtils.equals(feature, "p2p")) { 2799 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 2800 } else { 2801 Slog.e(TAG, "Can't match any wifi netTracker!"); 2802 } 2803 } else { 2804 Slog.e(TAG, "Unexpected network type"); 2805 } 2806 return usedNetworkType; 2807 } 2808 2809 private static <T> T checkNotNull(T value, String message) { 2810 if (value == null) { 2811 throw new NullPointerException(message); 2812 } 2813 return value; 2814 } 2815 2816 /** 2817 * Prepare for a VPN application. This method is used by system-privileged apps. 2818 * Permissions are checked in Vpn class. 2819 * @hide 2820 */ 2821 @Override 2822 public boolean prepareVpn(String oldPackage, String newPackage) { 2823 throwIfLockdownEnabled(); 2824 int user = UserHandle.getUserId(Binder.getCallingUid()); 2825 synchronized(mVpns) { 2826 return mVpns.get(user).prepare(oldPackage, newPackage); 2827 } 2828 } 2829 2830 /** 2831 * Set whether the current VPN package has the ability to launch VPNs without 2832 * user intervention. This method is used by system-privileged apps. 2833 * Permissions are checked in Vpn class. 2834 * @hide 2835 */ 2836 @Override 2837 public void setVpnPackageAuthorization(boolean authorized) { 2838 int user = UserHandle.getUserId(Binder.getCallingUid()); 2839 synchronized(mVpns) { 2840 mVpns.get(user).setPackageAuthorization(authorized); 2841 } 2842 } 2843 2844 /** 2845 * Configure a TUN interface and return its file descriptor. Parameters 2846 * are encoded and opaque to this class. This method is used by VpnBuilder 2847 * and not available in ConnectivityManager. Permissions are checked in 2848 * Vpn class. 2849 * @hide 2850 */ 2851 @Override 2852 public ParcelFileDescriptor establishVpn(VpnConfig config) { 2853 throwIfLockdownEnabled(); 2854 int user = UserHandle.getUserId(Binder.getCallingUid()); 2855 synchronized(mVpns) { 2856 return mVpns.get(user).establish(config); 2857 } 2858 } 2859 2860 /** 2861 * Start legacy VPN, controlling native daemons as needed. Creates a 2862 * secondary thread to perform connection work, returning quickly. 2863 */ 2864 @Override 2865 public void startLegacyVpn(VpnProfile profile) { 2866 throwIfLockdownEnabled(); 2867 final LinkProperties egress = getActiveLinkProperties(); 2868 if (egress == null) { 2869 throw new IllegalStateException("Missing active network connection"); 2870 } 2871 int user = UserHandle.getUserId(Binder.getCallingUid()); 2872 synchronized(mVpns) { 2873 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 2874 } 2875 } 2876 2877 /** 2878 * Return the information of the ongoing legacy VPN. This method is used 2879 * by VpnSettings and not available in ConnectivityManager. Permissions 2880 * are checked in Vpn class. 2881 * @hide 2882 */ 2883 @Override 2884 public LegacyVpnInfo getLegacyVpnInfo() { 2885 throwIfLockdownEnabled(); 2886 int user = UserHandle.getUserId(Binder.getCallingUid()); 2887 synchronized(mVpns) { 2888 return mVpns.get(user).getLegacyVpnInfo(); 2889 } 2890 } 2891 2892 /** 2893 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 2894 * not available in ConnectivityManager. 2895 * Permissions are checked in Vpn class. 2896 * @hide 2897 */ 2898 @Override 2899 public VpnConfig getVpnConfig() { 2900 int user = UserHandle.getUserId(Binder.getCallingUid()); 2901 synchronized(mVpns) { 2902 return mVpns.get(user).getVpnConfig(); 2903 } 2904 } 2905 2906 @Override 2907 public boolean updateLockdownVpn() { 2908 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 2909 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 2910 return false; 2911 } 2912 2913 // Tear down existing lockdown if profile was removed 2914 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 2915 if (mLockdownEnabled) { 2916 if (!mKeyStore.isUnlocked()) { 2917 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 2918 return false; 2919 } 2920 2921 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 2922 final VpnProfile profile = VpnProfile.decode( 2923 profileName, mKeyStore.get(Credentials.VPN + profileName)); 2924 int user = UserHandle.getUserId(Binder.getCallingUid()); 2925 synchronized(mVpns) { 2926 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 2927 profile)); 2928 } 2929 } else { 2930 setLockdownTracker(null); 2931 } 2932 2933 return true; 2934 } 2935 2936 /** 2937 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 2938 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 2939 */ 2940 private void setLockdownTracker(LockdownVpnTracker tracker) { 2941 // Shutdown any existing tracker 2942 final LockdownVpnTracker existing = mLockdownTracker; 2943 mLockdownTracker = null; 2944 if (existing != null) { 2945 existing.shutdown(); 2946 } 2947 2948 try { 2949 if (tracker != null) { 2950 mNetd.setFirewallEnabled(true); 2951 mNetd.setFirewallInterfaceRule("lo", true); 2952 mLockdownTracker = tracker; 2953 mLockdownTracker.init(); 2954 } else { 2955 mNetd.setFirewallEnabled(false); 2956 } 2957 } catch (RemoteException e) { 2958 // ignored; NMS lives inside system_server 2959 } 2960 } 2961 2962 private void throwIfLockdownEnabled() { 2963 if (mLockdownEnabled) { 2964 throw new IllegalStateException("Unavailable in lockdown mode"); 2965 } 2966 } 2967 2968 public void supplyMessenger(int networkType, Messenger messenger) { 2969 enforceConnectivityInternalPermission(); 2970 2971 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 2972 mNetTrackers[networkType].supplyMessenger(messenger); 2973 } 2974 } 2975 2976 public int findConnectionTypeForIface(String iface) { 2977 enforceConnectivityInternalPermission(); 2978 2979 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 2980 2981 synchronized(mNetworkForNetId) { 2982 for (int i = 0; i < mNetworkForNetId.size(); i++) { 2983 NetworkAgentInfo nai = mNetworkForNetId.valueAt(i); 2984 LinkProperties lp = nai.linkProperties; 2985 if (lp != null && iface.equals(lp.getInterfaceName()) && nai.networkInfo != null) { 2986 return nai.networkInfo.getType(); 2987 } 2988 } 2989 } 2990 return ConnectivityManager.TYPE_NONE; 2991 } 2992 2993 /** 2994 * Have mobile data fail fast if enabled. 2995 * 2996 * @param enabled DctConstants.ENABLED/DISABLED 2997 */ 2998 private void setEnableFailFastMobileData(int enabled) { 2999 int tag; 3000 3001 if (enabled == DctConstants.ENABLED) { 3002 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 3003 } else { 3004 tag = mEnableFailFastMobileDataTag.get(); 3005 } 3006 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 3007 enabled)); 3008 } 3009 3010 @Override 3011 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3012 // TODO: Remove? Any reason to trigger a provisioning check? 3013 return -1; 3014 } 3015 3016 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3017 private volatile boolean mIsNotificationVisible = false; 3018 3019 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3020 if (DBG) { 3021 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 3022 + " action=" + action); 3023 } 3024 Intent intent = new Intent(action); 3025 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3026 // Concatenate the range of types onto the range of NetIDs. 3027 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3028 setProvNotificationVisibleIntent(visible, id, networkType, null, pendingIntent); 3029 } 3030 3031 /** 3032 * Show or hide network provisioning notificaitons. 3033 * 3034 * @param id an identifier that uniquely identifies this notification. This must match 3035 * between show and hide calls. We use the NetID value but for legacy callers 3036 * we concatenate the range of types with the range of NetIDs. 3037 */ 3038 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 3039 String extraInfo, PendingIntent intent) { 3040 if (DBG) { 3041 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 3042 networkType + " extraInfo=" + extraInfo); 3043 } 3044 3045 Resources r = Resources.getSystem(); 3046 NotificationManager notificationManager = (NotificationManager) mContext 3047 .getSystemService(Context.NOTIFICATION_SERVICE); 3048 3049 if (visible) { 3050 CharSequence title; 3051 CharSequence details; 3052 int icon; 3053 Notification notification = new Notification(); 3054 switch (networkType) { 3055 case ConnectivityManager.TYPE_WIFI: 3056 title = r.getString(R.string.wifi_available_sign_in, 0); 3057 details = r.getString(R.string.network_available_sign_in_detailed, 3058 extraInfo); 3059 icon = R.drawable.stat_notify_wifi_in_range; 3060 break; 3061 case ConnectivityManager.TYPE_MOBILE: 3062 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3063 title = r.getString(R.string.network_available_sign_in, 0); 3064 // TODO: Change this to pull from NetworkInfo once a printable 3065 // name has been added to it 3066 details = mTelephonyManager.getNetworkOperatorName(); 3067 icon = R.drawable.stat_notify_rssi_in_range; 3068 break; 3069 default: 3070 title = r.getString(R.string.network_available_sign_in, 0); 3071 details = r.getString(R.string.network_available_sign_in_detailed, 3072 extraInfo); 3073 icon = R.drawable.stat_notify_rssi_in_range; 3074 break; 3075 } 3076 3077 notification.when = 0; 3078 notification.icon = icon; 3079 notification.flags = Notification.FLAG_AUTO_CANCEL; 3080 notification.tickerText = title; 3081 notification.color = mContext.getResources().getColor( 3082 com.android.internal.R.color.system_notification_accent_color); 3083 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 3084 notification.contentIntent = intent; 3085 3086 try { 3087 notificationManager.notify(NOTIFICATION_ID, id, notification); 3088 } catch (NullPointerException npe) { 3089 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 3090 npe.printStackTrace(); 3091 } 3092 } else { 3093 try { 3094 notificationManager.cancel(NOTIFICATION_ID, id); 3095 } catch (NullPointerException npe) { 3096 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 3097 npe.printStackTrace(); 3098 } 3099 } 3100 mIsNotificationVisible = visible; 3101 } 3102 3103 /** Location to an updatable file listing carrier provisioning urls. 3104 * An example: 3105 * 3106 * <?xml version="1.0" encoding="utf-8"?> 3107 * <provisioningUrls> 3108 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3109 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3110 * </provisioningUrls> 3111 */ 3112 private static final String PROVISIONING_URL_PATH = 3113 "/data/misc/radio/provisioning_urls.xml"; 3114 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3115 3116 /** XML tag for root element. */ 3117 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3118 /** XML tag for individual url */ 3119 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3120 /** XML tag for redirected url */ 3121 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3122 /** XML attribute for mcc */ 3123 private static final String ATTR_MCC = "mcc"; 3124 /** XML attribute for mnc */ 3125 private static final String ATTR_MNC = "mnc"; 3126 3127 private static final int REDIRECTED_PROVISIONING = 1; 3128 private static final int PROVISIONING = 2; 3129 3130 private String getProvisioningUrlBaseFromFile(int type) { 3131 FileReader fileReader = null; 3132 XmlPullParser parser = null; 3133 Configuration config = mContext.getResources().getConfiguration(); 3134 String tagType; 3135 3136 switch (type) { 3137 case PROVISIONING: 3138 tagType = TAG_PROVISIONING_URL; 3139 break; 3140 case REDIRECTED_PROVISIONING: 3141 tagType = TAG_REDIRECTED_URL; 3142 break; 3143 default: 3144 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3145 type); 3146 } 3147 3148 try { 3149 fileReader = new FileReader(mProvisioningUrlFile); 3150 parser = Xml.newPullParser(); 3151 parser.setInput(fileReader); 3152 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3153 3154 while (true) { 3155 XmlUtils.nextElement(parser); 3156 3157 String element = parser.getName(); 3158 if (element == null) break; 3159 3160 if (element.equals(tagType)) { 3161 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3162 try { 3163 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3164 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3165 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3166 parser.next(); 3167 if (parser.getEventType() == XmlPullParser.TEXT) { 3168 return parser.getText(); 3169 } 3170 } 3171 } 3172 } catch (NumberFormatException e) { 3173 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3174 } 3175 } 3176 } 3177 return null; 3178 } catch (FileNotFoundException e) { 3179 loge("Carrier Provisioning Urls file not found"); 3180 } catch (XmlPullParserException e) { 3181 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3182 } catch (IOException e) { 3183 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3184 } finally { 3185 if (fileReader != null) { 3186 try { 3187 fileReader.close(); 3188 } catch (IOException e) {} 3189 } 3190 } 3191 return null; 3192 } 3193 3194 @Override 3195 public String getMobileRedirectedProvisioningUrl() { 3196 enforceConnectivityInternalPermission(); 3197 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3198 if (TextUtils.isEmpty(url)) { 3199 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3200 } 3201 return url; 3202 } 3203 3204 @Override 3205 public String getMobileProvisioningUrl() { 3206 enforceConnectivityInternalPermission(); 3207 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3208 if (TextUtils.isEmpty(url)) { 3209 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3210 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3211 } else { 3212 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3213 } 3214 // populate the iccid, imei and phone number in the provisioning url. 3215 if (!TextUtils.isEmpty(url)) { 3216 String phoneNumber = mTelephonyManager.getLine1Number(); 3217 if (TextUtils.isEmpty(phoneNumber)) { 3218 phoneNumber = "0000000000"; 3219 } 3220 url = String.format(url, 3221 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3222 mTelephonyManager.getDeviceId() /* IMEI */, 3223 phoneNumber /* Phone numer */); 3224 } 3225 3226 return url; 3227 } 3228 3229 @Override 3230 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3231 String action) { 3232 enforceConnectivityInternalPermission(); 3233 final long ident = Binder.clearCallingIdentity(); 3234 try { 3235 setProvNotificationVisible(visible, networkType, action); 3236 } finally { 3237 Binder.restoreCallingIdentity(ident); 3238 } 3239 } 3240 3241 @Override 3242 public void setAirplaneMode(boolean enable) { 3243 enforceConnectivityInternalPermission(); 3244 final long ident = Binder.clearCallingIdentity(); 3245 try { 3246 final ContentResolver cr = mContext.getContentResolver(); 3247 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3248 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3249 intent.putExtra("state", enable); 3250 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3251 } finally { 3252 Binder.restoreCallingIdentity(ident); 3253 } 3254 } 3255 3256 private void onUserStart(int userId) { 3257 synchronized(mVpns) { 3258 Vpn userVpn = mVpns.get(userId); 3259 if (userVpn != null) { 3260 loge("Starting user already has a VPN"); 3261 return; 3262 } 3263 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, this, userId); 3264 mVpns.put(userId, userVpn); 3265 } 3266 } 3267 3268 private void onUserStop(int userId) { 3269 synchronized(mVpns) { 3270 Vpn userVpn = mVpns.get(userId); 3271 if (userVpn == null) { 3272 loge("Stopping user has no VPN"); 3273 return; 3274 } 3275 mVpns.delete(userId); 3276 } 3277 } 3278 3279 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3280 @Override 3281 public void onReceive(Context context, Intent intent) { 3282 final String action = intent.getAction(); 3283 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3284 if (userId == UserHandle.USER_NULL) return; 3285 3286 if (Intent.ACTION_USER_STARTING.equals(action)) { 3287 onUserStart(userId); 3288 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3289 onUserStop(userId); 3290 } 3291 } 3292 }; 3293 3294 @Override 3295 public LinkQualityInfo getLinkQualityInfo(int networkType) { 3296 enforceAccessPermission(); 3297 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 3298 return mNetTrackers[networkType].getLinkQualityInfo(); 3299 } else { 3300 return null; 3301 } 3302 } 3303 3304 @Override 3305 public LinkQualityInfo getActiveLinkQualityInfo() { 3306 enforceAccessPermission(); 3307 if (isNetworkTypeValid(mActiveDefaultNetwork) && 3308 mNetTrackers[mActiveDefaultNetwork] != null) { 3309 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 3310 } else { 3311 return null; 3312 } 3313 } 3314 3315 @Override 3316 public LinkQualityInfo[] getAllLinkQualityInfo() { 3317 enforceAccessPermission(); 3318 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 3319 for (NetworkStateTracker tracker : mNetTrackers) { 3320 if (tracker != null) { 3321 LinkQualityInfo li = tracker.getLinkQualityInfo(); 3322 if (li != null) { 3323 result.add(li); 3324 } 3325 } 3326 } 3327 3328 return result.toArray(new LinkQualityInfo[result.size()]); 3329 } 3330 3331 /* Infrastructure for network sampling */ 3332 3333 private void handleNetworkSamplingTimeout() { 3334 3335 if (SAMPLE_DBG) log("Sampling interval elapsed, updating statistics .."); 3336 3337 // initialize list of interfaces .. 3338 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 3339 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 3340 for (NetworkStateTracker tracker : mNetTrackers) { 3341 if (tracker != null) { 3342 String ifaceName = tracker.getNetworkInterfaceName(); 3343 if (ifaceName != null) { 3344 mapIfaceToSample.put(ifaceName, null); 3345 } 3346 } 3347 } 3348 3349 // Read samples for all interfaces 3350 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 3351 3352 // process samples for all networks 3353 for (NetworkStateTracker tracker : mNetTrackers) { 3354 if (tracker != null) { 3355 String ifaceName = tracker.getNetworkInterfaceName(); 3356 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 3357 if (ss != null) { 3358 // end the previous sampling cycle 3359 tracker.stopSampling(ss); 3360 // start a new sampling cycle .. 3361 tracker.startSampling(ss); 3362 } 3363 } 3364 } 3365 3366 if (SAMPLE_DBG) log("Done."); 3367 3368 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 3369 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 3370 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 3371 3372 if (SAMPLE_DBG) { 3373 log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 3374 } 3375 3376 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 3377 } 3378 3379 /** 3380 * Sets a network sampling alarm. 3381 */ 3382 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 3383 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 3384 int alarmType; 3385 if (Resources.getSystem().getBoolean( 3386 R.bool.config_networkSamplingWakesDevice)) { 3387 alarmType = AlarmManager.ELAPSED_REALTIME_WAKEUP; 3388 } else { 3389 alarmType = AlarmManager.ELAPSED_REALTIME; 3390 } 3391 mAlarmManager.set(alarmType, wakeupTime, intent); 3392 } 3393 3394 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3395 new HashMap<Messenger, NetworkFactoryInfo>(); 3396 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3397 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3398 3399 private static class NetworkFactoryInfo { 3400 public final String name; 3401 public final Messenger messenger; 3402 public final AsyncChannel asyncChannel; 3403 3404 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3405 this.name = name; 3406 this.messenger = messenger; 3407 this.asyncChannel = asyncChannel; 3408 } 3409 } 3410 3411 /** 3412 * Tracks info about the requester. 3413 * Also used to notice when the calling process dies so we can self-expire 3414 */ 3415 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3416 static final boolean REQUEST = true; 3417 static final boolean LISTEN = false; 3418 3419 final NetworkRequest request; 3420 final PendingIntent mPendingIntent; 3421 private final IBinder mBinder; 3422 final int mPid; 3423 final int mUid; 3424 final Messenger messenger; 3425 final boolean isRequest; 3426 3427 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) { 3428 request = r; 3429 mPendingIntent = pi; 3430 messenger = null; 3431 mBinder = null; 3432 mPid = getCallingPid(); 3433 mUid = getCallingUid(); 3434 this.isRequest = isRequest; 3435 } 3436 3437 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3438 super(); 3439 messenger = m; 3440 request = r; 3441 mBinder = binder; 3442 mPid = getCallingPid(); 3443 mUid = getCallingUid(); 3444 this.isRequest = isRequest; 3445 mPendingIntent = null; 3446 3447 try { 3448 mBinder.linkToDeath(this, 0); 3449 } catch (RemoteException e) { 3450 binderDied(); 3451 } 3452 } 3453 3454 void unlinkDeathRecipient() { 3455 if (mBinder != null) { 3456 mBinder.unlinkToDeath(this, 0); 3457 } 3458 } 3459 3460 public void binderDied() { 3461 log("ConnectivityService NetworkRequestInfo binderDied(" + 3462 request + ", " + mBinder + ")"); 3463 releaseNetworkRequest(request); 3464 } 3465 3466 public String toString() { 3467 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3468 mPid + " for " + request + 3469 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3470 } 3471 } 3472 3473 @Override 3474 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3475 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3476 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3477 enforceNetworkRequestPermissions(networkCapabilities); 3478 enforceMeteredApnPolicy(networkCapabilities); 3479 3480 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3481 throw new IllegalArgumentException("Bad timeout specified"); 3482 } 3483 3484 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3485 nextNetworkRequestId()); 3486 if (DBG) log("requestNetwork for " + networkRequest); 3487 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3488 NetworkRequestInfo.REQUEST); 3489 3490 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3491 if (timeoutMs > 0) { 3492 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3493 nri), timeoutMs); 3494 } 3495 return networkRequest; 3496 } 3497 3498 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3499 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 3500 == false) { 3501 enforceConnectivityInternalPermission(); 3502 } else { 3503 enforceChangePermission(); 3504 } 3505 } 3506 3507 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3508 // if UID is restricted, don't allow them to bring up metered APNs 3509 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED) 3510 == false) { 3511 final int uidRules; 3512 final int uid = Binder.getCallingUid(); 3513 synchronized(mRulesLock) { 3514 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3515 } 3516 if ((uidRules & RULE_REJECT_METERED) != 0) { 3517 // we could silently fail or we can filter the available nets to only give 3518 // them those they have access to. Chose the more useful 3519 networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED); 3520 } 3521 } 3522 } 3523 3524 @Override 3525 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3526 PendingIntent operation) { 3527 checkNotNull(operation, "PendingIntent cannot be null."); 3528 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3529 enforceNetworkRequestPermissions(networkCapabilities); 3530 enforceMeteredApnPolicy(networkCapabilities); 3531 3532 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3533 nextNetworkRequestId()); 3534 if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation); 3535 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3536 NetworkRequestInfo.REQUEST); 3537 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3538 nri)); 3539 return networkRequest; 3540 } 3541 3542 @Override 3543 public void releasePendingNetworkRequest(PendingIntent operation) { 3544 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3545 getCallingUid(), 0, operation)); 3546 } 3547 3548 @Override 3549 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3550 Messenger messenger, IBinder binder) { 3551 enforceAccessPermission(); 3552 3553 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3554 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3555 if (DBG) log("listenForNetwork for " + networkRequest); 3556 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3557 NetworkRequestInfo.LISTEN); 3558 3559 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3560 return networkRequest; 3561 } 3562 3563 @Override 3564 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3565 PendingIntent operation) { 3566 } 3567 3568 @Override 3569 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3570 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3571 0, networkRequest)); 3572 } 3573 3574 @Override 3575 public void registerNetworkFactory(Messenger messenger, String name) { 3576 enforceConnectivityInternalPermission(); 3577 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3578 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3579 } 3580 3581 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3582 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3583 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3584 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3585 } 3586 3587 @Override 3588 public void unregisterNetworkFactory(Messenger messenger) { 3589 enforceConnectivityInternalPermission(); 3590 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3591 } 3592 3593 private void handleUnregisterNetworkFactory(Messenger messenger) { 3594 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3595 if (nfi == null) { 3596 loge("Failed to find Messenger in unregisterNetworkFactory"); 3597 return; 3598 } 3599 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3600 } 3601 3602 /** 3603 * NetworkAgentInfo supporting a request by requestId. 3604 * These have already been vetted (their Capabilities satisfy the request) 3605 * and the are the highest scored network available. 3606 * the are keyed off the Requests requestId. 3607 */ 3608 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3609 new SparseArray<NetworkAgentInfo>(); 3610 3611 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3612 new SparseArray<NetworkAgentInfo>(); 3613 3614 // NetworkAgentInfo keyed off its connecting messenger 3615 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3616 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3617 new HashMap<Messenger, NetworkAgentInfo>(); 3618 3619 private final NetworkRequest mDefaultRequest; 3620 3621 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3622 return mNetworkForRequestId.get(mDefaultRequest.requestId) == nai; 3623 } 3624 3625 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3626 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3627 int currentScore, NetworkMisc networkMisc) { 3628 enforceConnectivityInternalPermission(); 3629 3630 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3631 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 3632 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler, 3633 new NetworkMisc(networkMisc)); 3634 synchronized (this) { 3635 nai.networkMonitor.systemReady = mSystemReady; 3636 } 3637 if (DBG) log("registerNetworkAgent " + nai); 3638 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3639 } 3640 3641 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3642 if (VDBG) log("Got NetworkAgent Messenger"); 3643 mNetworkAgentInfos.put(na.messenger, na); 3644 assignNextNetId(na); 3645 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3646 NetworkInfo networkInfo = na.networkInfo; 3647 na.networkInfo = null; 3648 updateNetworkInfo(na, networkInfo); 3649 } 3650 3651 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3652 LinkProperties newLp = networkAgent.linkProperties; 3653 int netId = networkAgent.network.netId; 3654 3655 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3656 // we do anything else, make sure its LinkProperties are accurate. 3657 if (networkAgent.clatd != null) { 3658 networkAgent.clatd.fixupLinkProperties(oldLp); 3659 } 3660 3661 updateInterfaces(newLp, oldLp, netId); 3662 updateMtu(newLp, oldLp); 3663 // TODO - figure out what to do for clat 3664// for (LinkProperties lp : newLp.getStackedLinks()) { 3665// updateMtu(lp, null); 3666// } 3667 updateTcpBufferSizes(networkAgent); 3668 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3669 updateDnses(newLp, oldLp, netId, flushDns); 3670 updateClat(newLp, oldLp, networkAgent); 3671 if (isDefaultNetwork(networkAgent)) handleApplyDefaultProxy(newLp.getHttpProxy()); 3672 // TODO - move this check to cover the whole function 3673 if (!Objects.equals(newLp, oldLp)) { 3674 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3675 } 3676 } 3677 3678 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3679 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3680 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3681 3682 if (!wasRunningClat && shouldRunClat) { 3683 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3684 nai.clatd.start(); 3685 } else if (wasRunningClat && !shouldRunClat) { 3686 nai.clatd.stop(); 3687 } 3688 } 3689 3690 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3691 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3692 if (oldLp != null) { 3693 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3694 } else if (newLp != null) { 3695 interfaceDiff.added = newLp.getAllInterfaceNames(); 3696 } 3697 for (String iface : interfaceDiff.added) { 3698 try { 3699 if (DBG) log("Adding iface " + iface + " to network " + netId); 3700 mNetd.addInterfaceToNetwork(iface, netId); 3701 } catch (Exception e) { 3702 loge("Exception adding interface: " + e); 3703 } 3704 } 3705 for (String iface : interfaceDiff.removed) { 3706 try { 3707 if (DBG) log("Removing iface " + iface + " from network " + netId); 3708 mNetd.removeInterfaceFromNetwork(iface, netId); 3709 } catch (Exception e) { 3710 loge("Exception removing interface: " + e); 3711 } 3712 } 3713 } 3714 3715 /** 3716 * Have netd update routes from oldLp to newLp. 3717 * @return true if routes changed between oldLp and newLp 3718 */ 3719 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3720 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3721 if (oldLp != null) { 3722 routeDiff = oldLp.compareAllRoutes(newLp); 3723 } else if (newLp != null) { 3724 routeDiff.added = newLp.getAllRoutes(); 3725 } 3726 3727 // add routes before removing old in case it helps with continuous connectivity 3728 3729 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3730 for (RouteInfo route : routeDiff.added) { 3731 if (route.hasGateway()) continue; 3732 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3733 try { 3734 mNetd.addRoute(netId, route); 3735 } catch (Exception e) { 3736 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3737 loge("Exception in addRoute for non-gateway: " + e); 3738 } 3739 } 3740 } 3741 for (RouteInfo route : routeDiff.added) { 3742 if (route.hasGateway() == false) continue; 3743 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3744 try { 3745 mNetd.addRoute(netId, route); 3746 } catch (Exception e) { 3747 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3748 loge("Exception in addRoute for gateway: " + e); 3749 } 3750 } 3751 } 3752 3753 for (RouteInfo route : routeDiff.removed) { 3754 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3755 try { 3756 mNetd.removeRoute(netId, route); 3757 } catch (Exception e) { 3758 loge("Exception in removeRoute: " + e); 3759 } 3760 } 3761 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3762 } 3763 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, boolean flush) { 3764 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 3765 Collection<InetAddress> dnses = newLp.getDnsServers(); 3766 if (dnses.size() == 0 && mDefaultDns != null) { 3767 dnses = new ArrayList(); 3768 dnses.add(mDefaultDns); 3769 if (DBG) { 3770 loge("no dns provided for netId " + netId + ", so using defaults"); 3771 } 3772 } 3773 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 3774 try { 3775 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 3776 newLp.getDomains()); 3777 } catch (Exception e) { 3778 loge("Exception in setDnsServersForNetwork: " + e); 3779 } 3780 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 3781 if (defaultNai != null && defaultNai.network.netId == netId) { 3782 setDefaultDnsSystemProperties(dnses); 3783 } 3784 flushVmDnsCache(); 3785 } else if (flush) { 3786 try { 3787 mNetd.flushNetworkDnsCache(netId); 3788 } catch (Exception e) { 3789 loge("Exception in flushNetworkDnsCache: " + e); 3790 } 3791 flushVmDnsCache(); 3792 } 3793 } 3794 3795 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 3796 int last = 0; 3797 for (InetAddress dns : dnses) { 3798 ++last; 3799 String key = "net.dns" + last; 3800 String value = dns.getHostAddress(); 3801 SystemProperties.set(key, value); 3802 } 3803 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 3804 String key = "net.dns" + i; 3805 SystemProperties.set(key, ""); 3806 } 3807 mNumDnsEntries = last; 3808 } 3809 3810 3811 private void updateCapabilities(NetworkAgentInfo networkAgent, 3812 NetworkCapabilities networkCapabilities) { 3813 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 3814 synchronized (networkAgent) { 3815 networkAgent.networkCapabilities = networkCapabilities; 3816 } 3817 rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore()); 3818 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 3819 } 3820 } 3821 3822 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 3823 for (int i = 0; i < nai.networkRequests.size(); i++) { 3824 NetworkRequest nr = nai.networkRequests.valueAt(i); 3825 // Don't send listening requests to factories. b/17393458 3826 if (!isRequest(nr)) continue; 3827 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 3828 } 3829 } 3830 3831 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 3832 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 3833 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3834 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 3835 networkRequest); 3836 } 3837 } 3838 3839 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 3840 int notificationType) { 3841 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE) { 3842 Intent intent = new Intent(); 3843 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, nri.request); 3844 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, networkAgent.network); 3845 sendIntent(nri.mPendingIntent, intent); 3846 } 3847 // else not handled 3848 } 3849 3850 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 3851 mPendingIntentWakeLock.acquire(); 3852 try { 3853 if (DBG) log("Sending " + pendingIntent); 3854 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 3855 } catch (PendingIntent.CanceledException e) { 3856 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 3857 mPendingIntentWakeLock.release(); 3858 releasePendingNetworkRequest(pendingIntent); 3859 } 3860 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 3861 } 3862 3863 @Override 3864 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 3865 String resultData, Bundle resultExtras) { 3866 if (DBG) log("Finished sending " + pendingIntent); 3867 mPendingIntentWakeLock.release(); 3868 releasePendingNetworkRequest(pendingIntent); 3869 } 3870 3871 private void callCallbackForRequest(NetworkRequestInfo nri, 3872 NetworkAgentInfo networkAgent, int notificationType) { 3873 if (nri.messenger == null) return; // Default request has no msgr 3874 Bundle bundle = new Bundle(); 3875 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 3876 new NetworkRequest(nri.request)); 3877 Message msg = Message.obtain(); 3878 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 3879 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 3880 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 3881 } 3882 switch (notificationType) { 3883 case ConnectivityManager.CALLBACK_LOSING: { 3884 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 3885 break; 3886 } 3887 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 3888 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 3889 new NetworkCapabilities(networkAgent.networkCapabilities)); 3890 break; 3891 } 3892 case ConnectivityManager.CALLBACK_IP_CHANGED: { 3893 bundle.putParcelable(LinkProperties.class.getSimpleName(), 3894 new LinkProperties(networkAgent.linkProperties)); 3895 break; 3896 } 3897 } 3898 msg.what = notificationType; 3899 msg.setData(bundle); 3900 try { 3901 if (VDBG) { 3902 log("sending notification " + notifyTypeToName(notificationType) + 3903 " for " + nri.request); 3904 } 3905 nri.messenger.send(msg); 3906 } catch (RemoteException e) { 3907 // may occur naturally in the race of binder death. 3908 loge("RemoteException caught trying to send a callback msg for " + nri.request); 3909 } 3910 } 3911 3912 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 3913 for (int i = 0; i < nai.networkRequests.size(); i++) { 3914 NetworkRequest nr = nai.networkRequests.valueAt(i); 3915 // Ignore listening requests. 3916 if (!isRequest(nr)) continue; 3917 loge("Dead network still had at least " + nr); 3918 break; 3919 } 3920 nai.asyncChannel.disconnect(); 3921 } 3922 3923 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 3924 if (oldNetwork == null) { 3925 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 3926 return; 3927 } 3928 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 3929 teardownUnneededNetwork(oldNetwork); 3930 } 3931 3932 private void makeDefault(NetworkAgentInfo newNetwork) { 3933 if (DBG) log("Switching to new default network: " + newNetwork); 3934 mActiveDefaultNetwork = newNetwork.networkInfo.getType(); 3935 setupDataActivityTracking(newNetwork); 3936 try { 3937 mNetd.setDefaultNetId(newNetwork.network.netId); 3938 } catch (Exception e) { 3939 loge("Exception setting default network :" + e); 3940 } 3941 notifyLockdownVpn(newNetwork); 3942 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 3943 updateTcpBufferSizes(newNetwork); 3944 } 3945 3946 // Handles a network appearing or improving its score. 3947 // 3948 // - Evaluates all current NetworkRequests that can be 3949 // satisfied by newNetwork, and reassigns to newNetwork 3950 // any such requests for which newNetwork is the best. 3951 // 3952 // - Lingers any Networks that as a result are no longer 3953 // needed. A network is needed if it is the best network for 3954 // one or more NetworkRequests, or if it is a VPN. 3955 // 3956 // - Tears down newNetwork if it just became validated 3957 // (i.e. nascent==true) but turns out to be unneeded. 3958 // Does not tear down newNetwork if it is unvalidated, 3959 // because future validation may improve newNetwork's 3960 // score enough that it is needed. 3961 // 3962 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 3963 // it does not remove NetworkRequests that other Networks could better satisfy. 3964 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 3965 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 3966 // as it performs better by a factor of the number of Networks. 3967 // 3968 // @param nascent indicates if newNetwork just became validated, in which case it should be 3969 // torn down if unneeded. If nascent is false, no action is taken if newNetwork 3970 // is found to be unneeded by this call. Presumably, in this case, either: 3971 // - newNetwork is unvalidated (and left alive), or 3972 // - the NetworkRequests keeping newNetwork alive have been transitioned to 3973 // another higher scoring network by another call to rematchNetworkAndRequests() 3974 // and this other call also lingered newNetwork. 3975 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, boolean nascent) { 3976 if (!newNetwork.created) return; 3977 if (nascent && !newNetwork.validated) loge("ERROR: nascent network not validated."); 3978 boolean keep = newNetwork.isVPN(); 3979 boolean isNewDefault = false; 3980 if (DBG) log("rematching " + newNetwork.name()); 3981 // Find and migrate to this Network any NetworkRequests for 3982 // which this network is now the best. 3983 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 3984 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 3985 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3986 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 3987 if (newNetwork == currentNetwork) { 3988 if (DBG) { 3989 log("Network " + newNetwork.name() + " was already satisfying" + 3990 " request " + nri.request.requestId + ". No change."); 3991 } 3992 keep = true; 3993 continue; 3994 } 3995 3996 // check if it satisfies the NetworkCapabilities 3997 if (VDBG) log(" checking if request is satisfied: " + nri.request); 3998 if (nri.request.networkCapabilities.satisfiedByNetworkCapabilities( 3999 newNetwork.networkCapabilities)) { 4000 if (!nri.isRequest) { 4001 // This is not a request, it's a callback listener. 4002 // Add it to newNetwork regardless of score. 4003 newNetwork.addRequest(nri.request); 4004 continue; 4005 } 4006 4007 // next check if it's better than any current network we're using for 4008 // this request 4009 if (VDBG) { 4010 log("currentScore = " + 4011 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4012 ", newScore = " + newNetwork.getCurrentScore()); 4013 } 4014 if (currentNetwork == null || 4015 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4016 if (currentNetwork != null) { 4017 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 4018 currentNetwork.networkRequests.remove(nri.request.requestId); 4019 currentNetwork.networkLingered.add(nri.request); 4020 affectedNetworks.add(currentNetwork); 4021 } else { 4022 if (DBG) log(" accepting network in place of null"); 4023 } 4024 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4025 newNetwork.addRequest(nri.request); 4026 if (nri.isRequest && nri.request.legacyType != TYPE_NONE) { 4027 mLegacyTypeTracker.add(nri.request.legacyType, newNetwork); 4028 } 4029 keep = true; 4030 // Tell NetworkFactories about the new score, so they can stop 4031 // trying to connect if they know they cannot match it. 4032 // TODO - this could get expensive if we have alot of requests for this 4033 // network. Think about if there is a way to reduce this. Push 4034 // netid->request mapping to each factory? 4035 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4036 if (mDefaultRequest.requestId == nri.request.requestId) { 4037 isNewDefault = true; 4038 // TODO: Remove following line. It's redundant with makeDefault call. 4039 mActiveDefaultNetwork = newNetwork.networkInfo.getType(); 4040 if (newNetwork.linkProperties != null) { 4041 updateTcpBufferSizes(newNetwork); 4042 setDefaultDnsSystemProperties( 4043 newNetwork.linkProperties.getDnsServers()); 4044 } else { 4045 setDefaultDnsSystemProperties(new ArrayList<InetAddress>()); 4046 } 4047 // Maintain the illusion: since the legacy API only 4048 // understands one network at a time, we must pretend 4049 // that the current default network disconnected before 4050 // the new one connected. 4051 if (currentNetwork != null) { 4052 mLegacyTypeTracker.remove(currentNetwork.networkInfo.getType(), 4053 currentNetwork); 4054 } 4055 mDefaultInetConditionPublished = newNetwork.validated ? 100 : 0; 4056 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4057 notifyLockdownVpn(newNetwork); 4058 } 4059 } 4060 } 4061 } 4062 // Linger any networks that are no longer needed. 4063 for (NetworkAgentInfo nai : affectedNetworks) { 4064 boolean teardown = !nai.isVPN() && nai.validated; 4065 for (int i = 0; i < nai.networkRequests.size() && teardown; i++) { 4066 NetworkRequest nr = nai.networkRequests.valueAt(i); 4067 try { 4068 if (isRequest(nr)) { 4069 teardown = false; 4070 } 4071 } catch (Exception e) { 4072 loge("Request " + nr + " not found in mNetworkRequests."); 4073 loge(" it came from request list of " + nai.name()); 4074 } 4075 } 4076 if (teardown) { 4077 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 4078 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 4079 } else { 4080 // not going to linger, so kill the list of linger networks.. only 4081 // notify them of linger if it happens as the result of gaining another, 4082 // but if they transition and old network stays up, don't tell them of linger 4083 // or very delayed loss 4084 nai.networkLingered.clear(); 4085 if (VDBG) log("Lingered for " + nai.name() + " cleared"); 4086 } 4087 } 4088 if (keep) { 4089 if (isNewDefault) { 4090 // Notify system services that this network is up. 4091 makeDefault(newNetwork); 4092 synchronized (ConnectivityService.this) { 4093 // have a new default network, release the transition wakelock in 4094 // a second if it's held. The second pause is to allow apps 4095 // to reconnect over the new network 4096 if (mNetTransitionWakeLock.isHeld()) { 4097 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4098 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4099 mNetTransitionWakeLockSerialNumber, 0), 4100 1000); 4101 } 4102 } 4103 } 4104 4105 // Notify battery stats service about this network, both the normal 4106 // interface and any stacked links. 4107 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4108 try { 4109 final IBatteryStats bs = BatteryStatsService.getService(); 4110 final int type = newNetwork.networkInfo.getType(); 4111 4112 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4113 bs.noteNetworkInterfaceType(baseIface, type); 4114 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4115 final String stackedIface = stacked.getInterfaceName(); 4116 bs.noteNetworkInterfaceType(stackedIface, type); 4117 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4118 } 4119 } catch (RemoteException ignored) { 4120 } 4121 4122 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 4123 4124 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4125 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4126 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4127 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4128 if (newNetwork.isVPN()) { 4129 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4130 } 4131 } else if (nascent) { 4132 // Only tear down newly validated networks here. Leave unvalidated to either become 4133 // validated (and get evaluated against peers, one losing here) or 4134 // NetworkMonitor reports a bad network and we tear it down then. 4135 // Networks that have been up for a while and are validated should be torn down via 4136 // the lingering process so communication on that network is given time to wrap up. 4137 // TODO: Could teardown unvalidated networks when their NetworkCapabilities 4138 // satisfy no NetworkRequests. 4139 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 4140 teardownUnneededNetwork(newNetwork); 4141 } 4142 } 4143 4144 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4145 // being disconnected. 4146 // If only one Network's score or capabilities have been modified since the last time 4147 // this function was called, pass this Network in via the "changed" arugment, otherwise 4148 // pass null. 4149 // If only one Network has been changed but its NetworkCapabilities have not changed, 4150 // pass in the Network's score (from getCurrentScore()) prior to the change via 4151 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 4152 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4153 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4154 // to avoid the slowness. It is not simply enough to process just "changed", for 4155 // example in the case where "changed"'s score decreases and another network should begin 4156 // satifying a NetworkRequest that "changed" currently satisfies. 4157 4158 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4159 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4160 // rematchNetworkAndRequests() handles. 4161 if (changed != null && oldScore < changed.getCurrentScore()) { 4162 rematchNetworkAndRequests(changed, false); 4163 } else { 4164 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4165 rematchNetworkAndRequests(nai, false); 4166 } 4167 } 4168 } 4169 4170 private void updateInetCondition(NetworkAgentInfo nai, boolean valid) { 4171 // Don't bother updating until we've graduated to validated at least once. 4172 if (!nai.validated) return; 4173 // For now only update icons for default connection. 4174 // TODO: Update WiFi and cellular icons separately. b/17237507 4175 if (!isDefaultNetwork(nai)) return; 4176 4177 int newInetCondition = valid ? 100 : 0; 4178 // Don't repeat publish. 4179 if (newInetCondition == mDefaultInetConditionPublished) return; 4180 4181 mDefaultInetConditionPublished = newInetCondition; 4182 sendInetConditionBroadcast(nai.networkInfo); 4183 } 4184 4185 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4186 if (mLockdownTracker != null) { 4187 if (nai != null && nai.isVPN()) { 4188 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4189 } else { 4190 mLockdownTracker.onNetworkInfoChanged(); 4191 } 4192 } 4193 } 4194 4195 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4196 NetworkInfo.State state = newInfo.getState(); 4197 NetworkInfo oldInfo = null; 4198 synchronized (networkAgent) { 4199 oldInfo = networkAgent.networkInfo; 4200 networkAgent.networkInfo = newInfo; 4201 } 4202 notifyLockdownVpn(networkAgent); 4203 4204 if (oldInfo != null && oldInfo.getState() == state) { 4205 if (VDBG) log("ignoring duplicate network state non-change"); 4206 return; 4207 } 4208 if (DBG) { 4209 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4210 (oldInfo == null ? "null" : oldInfo.getState()) + 4211 " to " + state); 4212 } 4213 4214 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4215 try { 4216 // This should never fail. Specifying an already in use NetID will cause failure. 4217 if (networkAgent.isVPN()) { 4218 mNetd.createVirtualNetwork(networkAgent.network.netId, 4219 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4220 (networkAgent.networkMisc == null || 4221 !networkAgent.networkMisc.allowBypass)); 4222 } else { 4223 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4224 } 4225 } catch (Exception e) { 4226 loge("Error creating network " + networkAgent.network.netId + ": " 4227 + e.getMessage()); 4228 return; 4229 } 4230 networkAgent.created = true; 4231 updateLinkProperties(networkAgent, null); 4232 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4233 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4234 if (networkAgent.isVPN()) { 4235 // Temporarily disable the default proxy (not global). 4236 synchronized (mProxyLock) { 4237 if (!mDefaultProxyDisabled) { 4238 mDefaultProxyDisabled = true; 4239 if (mGlobalProxy == null && mDefaultProxy != null) { 4240 sendProxyBroadcast(null); 4241 } 4242 } 4243 } 4244 // TODO: support proxy per network. 4245 } 4246 // Consider network even though it is not yet validated. 4247 rematchNetworkAndRequests(networkAgent, false); 4248 } else if (state == NetworkInfo.State.DISCONNECTED || 4249 state == NetworkInfo.State.SUSPENDED) { 4250 networkAgent.asyncChannel.disconnect(); 4251 if (networkAgent.isVPN()) { 4252 synchronized (mProxyLock) { 4253 if (mDefaultProxyDisabled) { 4254 mDefaultProxyDisabled = false; 4255 if (mGlobalProxy == null && mDefaultProxy != null) { 4256 sendProxyBroadcast(mDefaultProxy); 4257 } 4258 } 4259 } 4260 } 4261 } 4262 } 4263 4264 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4265 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4266 if (score < 0) { 4267 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4268 "). Bumping score to min of 0"); 4269 score = 0; 4270 } 4271 4272 final int oldScore = nai.getCurrentScore(); 4273 nai.setCurrentScore(score); 4274 4275 rematchAllNetworksAndRequests(nai, oldScore); 4276 4277 sendUpdatedScoreToFactories(nai); 4278 } 4279 4280 // notify only this one new request of the current state 4281 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4282 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4283 // TODO - read state from monitor to decide what to send. 4284// if (nai.networkMonitor.isLingering()) { 4285// notifyType = NetworkCallbacks.LOSING; 4286// } else if (nai.networkMonitor.isEvaluating()) { 4287// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4288// } 4289 if (nri.mPendingIntent == null) { 4290 callCallbackForRequest(nri, nai, notifyType); 4291 } else { 4292 sendPendingIntentForRequest(nri, nai, notifyType); 4293 } 4294 } 4295 4296 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4297 // The NetworkInfo we actually send out has no bearing on the real 4298 // state of affairs. For example, if the default connection is mobile, 4299 // and a request for HIPRI has just gone away, we need to pretend that 4300 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4301 // the state to DISCONNECTED, even though the network is of type MOBILE 4302 // and is still connected. 4303 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4304 info.setType(type); 4305 if (connected) { 4306 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4307 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 4308 } else { 4309 info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo()); 4310 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4311 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4312 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4313 if (info.isFailover()) { 4314 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4315 nai.networkInfo.setFailover(false); 4316 } 4317 if (info.getReason() != null) { 4318 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4319 } 4320 if (info.getExtraInfo() != null) { 4321 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4322 } 4323 NetworkAgentInfo newDefaultAgent = null; 4324 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4325 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4326 if (newDefaultAgent != null) { 4327 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4328 newDefaultAgent.networkInfo); 4329 } else { 4330 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4331 } 4332 } 4333 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4334 mDefaultInetConditionPublished); 4335 final Intent immediateIntent = new Intent(intent); 4336 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 4337 sendStickyBroadcast(immediateIntent); 4338 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 4339 if (newDefaultAgent != null) { 4340 sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo, 4341 getConnectivityChangeDelay()); 4342 } 4343 } 4344 } 4345 4346 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4347 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4348 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4349 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4350 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4351 if (VDBG) log(" sending notification for " + nr); 4352 if (nri.mPendingIntent == null) { 4353 callCallbackForRequest(nri, networkAgent, notifyType); 4354 } else { 4355 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4356 } 4357 } 4358 } 4359 4360 private String notifyTypeToName(int notifyType) { 4361 switch (notifyType) { 4362 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4363 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4364 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4365 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4366 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4367 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4368 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4369 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4370 } 4371 return "UNKNOWN"; 4372 } 4373 4374 private LinkProperties getLinkPropertiesForTypeInternal(int networkType) { 4375 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 4376 if (nai != null) { 4377 synchronized (nai) { 4378 return new LinkProperties(nai.linkProperties); 4379 } 4380 } 4381 return new LinkProperties(); 4382 } 4383 4384 private NetworkInfo getNetworkInfoForType(int networkType) { 4385 if (!mLegacyTypeTracker.isTypeSupported(networkType)) 4386 return null; 4387 4388 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 4389 if (nai != null) { 4390 NetworkInfo result = new NetworkInfo(nai.networkInfo); 4391 result.setType(networkType); 4392 return result; 4393 } else { 4394 NetworkInfo result = new NetworkInfo( 4395 networkType, 0, ConnectivityManager.getNetworkTypeName(networkType), ""); 4396 result.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 4397 result.setIsAvailable(true); 4398 return result; 4399 } 4400 } 4401 4402 private NetworkCapabilities getNetworkCapabilitiesForType(int networkType) { 4403 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 4404 if (nai != null) { 4405 synchronized (nai) { 4406 return new NetworkCapabilities(nai.networkCapabilities); 4407 } 4408 } 4409 return new NetworkCapabilities(); 4410 } 4411 4412 @Override 4413 public boolean addVpnAddress(String address, int prefixLength) { 4414 throwIfLockdownEnabled(); 4415 int user = UserHandle.getUserId(Binder.getCallingUid()); 4416 synchronized (mVpns) { 4417 return mVpns.get(user).addAddress(address, prefixLength); 4418 } 4419 } 4420 4421 @Override 4422 public boolean removeVpnAddress(String address, int prefixLength) { 4423 throwIfLockdownEnabled(); 4424 int user = UserHandle.getUserId(Binder.getCallingUid()); 4425 synchronized (mVpns) { 4426 return mVpns.get(user).removeAddress(address, prefixLength); 4427 } 4428 } 4429} 4430