ConnectivityService.java revision 8e3f4fbdf6e562f4f5731b98e327e8af33b75c4c
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_MMS; 27import static android.net.ConnectivityManager.TYPE_MOBILE_SUPL; 28import static android.net.ConnectivityManager.TYPE_MOBILE_DUN; 29import static android.net.ConnectivityManager.TYPE_MOBILE_FOTA; 30import static android.net.ConnectivityManager.TYPE_MOBILE_IMS; 31import static android.net.ConnectivityManager.TYPE_MOBILE_CBS; 32import static android.net.ConnectivityManager.TYPE_MOBILE_IA; 33import static android.net.ConnectivityManager.TYPE_MOBILE_HIPRI; 34import static android.net.ConnectivityManager.TYPE_NONE; 35import static android.net.ConnectivityManager.TYPE_WIFI; 36import static android.net.ConnectivityManager.TYPE_WIMAX; 37import static android.net.ConnectivityManager.TYPE_PROXY; 38import static android.net.ConnectivityManager.getNetworkTypeName; 39import static android.net.ConnectivityManager.isNetworkTypeValid; 40import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 41import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 42 43import android.app.AlarmManager; 44import android.app.Notification; 45import android.app.NotificationManager; 46import android.app.PendingIntent; 47import android.content.ActivityNotFoundException; 48import android.content.BroadcastReceiver; 49import android.content.ContentResolver; 50import android.content.Context; 51import android.content.ContextWrapper; 52import android.content.Intent; 53import android.content.IntentFilter; 54import android.content.pm.PackageManager; 55import android.content.res.Configuration; 56import android.content.res.Resources; 57import android.database.ContentObserver; 58import android.net.ConnectivityManager; 59import android.net.IConnectivityManager; 60import android.net.INetworkManagementEventObserver; 61import android.net.INetworkPolicyListener; 62import android.net.INetworkPolicyManager; 63import android.net.INetworkStatsService; 64import android.net.LinkAddress; 65import android.net.LinkProperties; 66import android.net.LinkProperties.CompareResult; 67import android.net.LinkQualityInfo; 68import android.net.MobileDataStateTracker; 69import android.net.Network; 70import android.net.NetworkAgent; 71import android.net.NetworkCapabilities; 72import android.net.NetworkConfig; 73import android.net.NetworkInfo; 74import android.net.NetworkInfo.DetailedState; 75import android.net.NetworkFactory; 76import android.net.NetworkMisc; 77import android.net.NetworkQuotaInfo; 78import android.net.NetworkRequest; 79import android.net.NetworkState; 80import android.net.NetworkStateTracker; 81import android.net.NetworkUtils; 82import android.net.Proxy; 83import android.net.ProxyDataTracker; 84import android.net.ProxyInfo; 85import android.net.RouteInfo; 86import android.net.SamplingDataTracker; 87import android.net.UidRange; 88import android.net.Uri; 89import android.net.wimax.WimaxManagerConstants; 90import android.os.AsyncTask; 91import android.os.Binder; 92import android.os.Build; 93import android.os.Bundle; 94import android.os.FileUtils; 95import android.os.Handler; 96import android.os.HandlerThread; 97import android.os.IBinder; 98import android.os.INetworkManagementService; 99import android.os.Looper; 100import android.os.Message; 101import android.os.Messenger; 102import android.os.ParcelFileDescriptor; 103import android.os.PowerManager; 104import android.os.Process; 105import android.os.RemoteException; 106import android.os.ServiceManager; 107import android.os.SystemClock; 108import android.os.SystemProperties; 109import android.os.UserHandle; 110import android.os.UserManager; 111import android.provider.Settings; 112import android.security.Credentials; 113import android.security.KeyStore; 114import android.telephony.TelephonyManager; 115import android.text.TextUtils; 116import android.util.Slog; 117import android.util.SparseArray; 118import android.util.SparseIntArray; 119import android.util.Xml; 120 121import com.android.internal.R; 122import com.android.internal.annotations.GuardedBy; 123import com.android.internal.app.IBatteryStats; 124import com.android.internal.net.LegacyVpnInfo; 125import com.android.internal.net.NetworkStatsFactory; 126import com.android.internal.net.VpnConfig; 127import com.android.internal.net.VpnProfile; 128import com.android.internal.telephony.DctConstants; 129import com.android.internal.telephony.Phone; 130import com.android.internal.telephony.PhoneConstants; 131import com.android.internal.telephony.TelephonyIntents; 132import com.android.internal.util.AsyncChannel; 133import com.android.internal.util.IndentingPrintWriter; 134import com.android.internal.util.XmlUtils; 135import com.android.server.am.BatteryStatsService; 136import com.android.server.connectivity.DataConnectionStats; 137import com.android.server.connectivity.Nat464Xlat; 138import com.android.server.connectivity.NetworkAgentInfo; 139import com.android.server.connectivity.NetworkMonitor; 140import com.android.server.connectivity.PacManager; 141import com.android.server.connectivity.PermissionMonitor; 142import com.android.server.connectivity.Tethering; 143import com.android.server.connectivity.Vpn; 144import com.android.server.net.BaseNetworkObserver; 145import com.android.server.net.LockdownVpnTracker; 146import com.google.android.collect.Lists; 147import com.google.android.collect.Sets; 148 149import dalvik.system.DexClassLoader; 150 151import org.xmlpull.v1.XmlPullParser; 152import org.xmlpull.v1.XmlPullParserException; 153 154import java.io.File; 155import java.io.FileDescriptor; 156import java.io.FileNotFoundException; 157import java.io.FileReader; 158import java.io.IOException; 159import java.io.PrintWriter; 160import java.lang.reflect.Constructor; 161import java.net.HttpURLConnection; 162import java.net.Inet4Address; 163import java.net.Inet6Address; 164import java.net.InetAddress; 165import java.net.URL; 166import java.net.UnknownHostException; 167import java.util.ArrayList; 168import java.util.Arrays; 169import java.util.Collection; 170import java.util.GregorianCalendar; 171import java.util.HashMap; 172import java.util.HashSet; 173import java.util.List; 174import java.util.Map; 175import java.util.Objects; 176import java.util.Random; 177import java.util.concurrent.atomic.AtomicBoolean; 178import java.util.concurrent.atomic.AtomicInteger; 179 180import javax.net.ssl.HostnameVerifier; 181import javax.net.ssl.HttpsURLConnection; 182import javax.net.ssl.SSLSession; 183 184/** 185 * @hide 186 */ 187public class ConnectivityService extends IConnectivityManager.Stub { 188 private static final String TAG = "ConnectivityService"; 189 190 private static final boolean DBG = true; 191 private static final boolean VDBG = false; 192 193 // network sampling debugging 194 private static final boolean SAMPLE_DBG = false; 195 196 private static final boolean LOGD_RULES = false; 197 198 // TODO: create better separation between radio types and network types 199 200 // how long to wait before switching back to a radio's default network 201 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 202 // system property that can override the above value 203 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 204 "android.telephony.apn-restore"; 205 206 // Default value if FAIL_FAST_TIME_MS is not set 207 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 208 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 209 private static final String FAIL_FAST_TIME_MS = 210 "persist.radio.fail_fast_time_ms"; 211 212 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 213 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 214 215 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 216 217 private PendingIntent mSampleIntervalElapsedIntent; 218 219 // Set network sampling interval at 12 minutes, this way, even if the timers get 220 // aggregated, it will fire at around 15 minutes, which should allow us to 221 // aggregate this timer with other timers (specially the socket keep alive timers) 222 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 12 * 60); 223 224 // start network sampling a minute after booting ... 225 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 60); 226 227 AlarmManager mAlarmManager; 228 229 private Tethering mTethering; 230 231 private final PermissionMonitor mPermissionMonitor; 232 233 private KeyStore mKeyStore; 234 235 @GuardedBy("mVpns") 236 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 237 238 private boolean mLockdownEnabled; 239 private LockdownVpnTracker mLockdownTracker; 240 241 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 242 private Object mRulesLock = new Object(); 243 /** Currently active network rules by UID. */ 244 private SparseIntArray mUidRules = new SparseIntArray(); 245 /** Set of ifaces that are costly. */ 246 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 247 248 /** 249 * Sometimes we want to refer to the individual network state 250 * trackers separately, and sometimes we just want to treat them 251 * abstractly. 252 */ 253 private NetworkStateTracker mNetTrackers[]; 254 255 private Context mContext; 256 private int mNetworkPreference; 257 private int mActiveDefaultNetwork = TYPE_NONE; 258 // 0 is full bad, 100 is full good 259 private int mDefaultInetConditionPublished = 0; 260 261 private Object mDnsLock = new Object(); 262 private int mNumDnsEntries; 263 264 private boolean mTestMode; 265 private static ConnectivityService sServiceInstance; 266 267 private INetworkManagementService mNetd; 268 private INetworkPolicyManager mPolicyManager; 269 270 private String mCurrentTcpBufferSizes; 271 272 private static final int ENABLED = 1; 273 private static final int DISABLED = 0; 274 275 /** 276 * used internally to change our mobile data enabled flag 277 */ 278 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 279 280 /** 281 * used internally to clear a wakelock when transitioning 282 * from one net to another. Clear happens when we get a new 283 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 284 * after a timeout if no network is found (typically 1 min). 285 */ 286 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 287 288 /** 289 * used internally to reload global proxy settings 290 */ 291 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 292 293 /** 294 * used internally to set external dependency met/unmet 295 * arg1 = ENABLED (met) or DISABLED (unmet) 296 * arg2 = NetworkType 297 */ 298 private static final int EVENT_SET_DEPENDENCY_MET = 10; 299 300 /** 301 * used internally to send a sticky broadcast delayed. 302 */ 303 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 304 305 /** 306 * Used internally to 307 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 308 */ 309 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 310 311 /** 312 * Used internally to disable fail fast of mobile data 313 */ 314 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 315 316 /** 317 * used internally to indicate that data sampling interval is up 318 */ 319 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 320 321 /** 322 * PAC manager has received new port. 323 */ 324 private static final int EVENT_PROXY_HAS_CHANGED = 16; 325 326 /** 327 * used internally when registering NetworkFactories 328 * obj = NetworkFactoryInfo 329 */ 330 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 331 332 /** 333 * used internally when registering NetworkAgents 334 * obj = Messenger 335 */ 336 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 337 338 /** 339 * used to add a network request 340 * includes a NetworkRequestInfo 341 */ 342 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 343 344 /** 345 * indicates a timeout period is over - check if we had a network yet or not 346 * and if not, call the timeout calback (but leave the request live until they 347 * cancel it. 348 * includes a NetworkRequestInfo 349 */ 350 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 351 352 /** 353 * used to add a network listener - no request 354 * includes a NetworkRequestInfo 355 */ 356 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 357 358 /** 359 * used to remove a network request, either a listener or a real request 360 * arg1 = UID of caller 361 * obj = NetworkRequest 362 */ 363 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 364 365 /** 366 * used internally when registering NetworkFactories 367 * obj = Messenger 368 */ 369 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 370 371 /** 372 * used internally to expire a wakelock when transitioning 373 * from one net to another. Expire happens when we fail to find 374 * a new network (typically after 1 minute) - 375 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 376 * a replacement network. 377 */ 378 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 379 380 /** 381 * Used internally to indicate the system is ready. 382 */ 383 private static final int EVENT_SYSTEM_READY = 25; 384 385 386 /** Handler used for internal events. */ 387 final private InternalHandler mHandler; 388 /** Handler used for incoming {@link NetworkStateTracker} events. */ 389 final private NetworkStateTrackerHandler mTrackerHandler; 390 391 private boolean mSystemReady; 392 private Intent mInitialBroadcast; 393 394 private PowerManager.WakeLock mNetTransitionWakeLock; 395 private String mNetTransitionWakeLockCausedBy = ""; 396 private int mNetTransitionWakeLockSerialNumber; 397 private int mNetTransitionWakeLockTimeout; 398 399 private InetAddress mDefaultDns; 400 401 // used in DBG mode to track inet condition reports 402 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 403 private ArrayList mInetLog; 404 405 // track the current default http proxy - tell the world if we get a new one (real change) 406 private volatile ProxyInfo mDefaultProxy = null; 407 private Object mProxyLock = new Object(); 408 private boolean mDefaultProxyDisabled = false; 409 410 // track the global proxy. 411 private ProxyInfo mGlobalProxy = null; 412 413 private PacManager mPacManager = null; 414 415 private SettingsObserver mSettingsObserver; 416 417 private UserManager mUserManager; 418 419 NetworkConfig[] mNetConfigs; 420 int mNetworksDefined; 421 422 // the set of network types that can only be enabled by system/sig apps 423 List mProtectedNetworks; 424 425 private DataConnectionStats mDataConnectionStats; 426 427 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 428 429 TelephonyManager mTelephonyManager; 430 431 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 432 private final static int MIN_NET_ID = 100; // some reserved marks 433 private final static int MAX_NET_ID = 65535; 434 private int mNextNetId = MIN_NET_ID; 435 436 // sequence number of NetworkRequests 437 private int mNextNetworkRequestId = 1; 438 439 /** 440 * Implements support for the legacy "one network per network type" model. 441 * 442 * We used to have a static array of NetworkStateTrackers, one for each 443 * network type, but that doesn't work any more now that we can have, 444 * for example, more that one wifi network. This class stores all the 445 * NetworkAgentInfo objects that support a given type, but the legacy 446 * API will only see the first one. 447 * 448 * It serves two main purposes: 449 * 450 * 1. Provide information about "the network for a given type" (since this 451 * API only supports one). 452 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 453 * the first network for a given type changes, or if the default network 454 * changes. 455 */ 456 private class LegacyTypeTracker { 457 458 private static final boolean DBG = true; 459 private static final boolean VDBG = false; 460 private static final String TAG = "CSLegacyTypeTracker"; 461 462 /** 463 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 464 * Each list holds references to all NetworkAgentInfos that are used to 465 * satisfy requests for that network type. 466 * 467 * This array is built out at startup such that an unsupported network 468 * doesn't get an ArrayList instance, making this a tristate: 469 * unsupported, supported but not active and active. 470 * 471 * The actual lists are populated when we scan the network types that 472 * are supported on this device. 473 */ 474 private ArrayList<NetworkAgentInfo> mTypeLists[]; 475 476 public LegacyTypeTracker() { 477 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 478 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 479 } 480 481 public void addSupportedType(int type) { 482 if (mTypeLists[type] != null) { 483 throw new IllegalStateException( 484 "legacy list for type " + type + "already initialized"); 485 } 486 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 487 } 488 489 public boolean isTypeSupported(int type) { 490 return isNetworkTypeValid(type) && mTypeLists[type] != null; 491 } 492 493 public NetworkAgentInfo getNetworkForType(int type) { 494 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 495 return mTypeLists[type].get(0); 496 } else { 497 return null; 498 } 499 } 500 501 private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 502 if (DBG) { 503 log("Sending " + (connected ? "connected" : "disconnected") + 504 " broadcast for type " + type + " " + nai.name() + 505 " isDefaultNetwork=" + isDefaultNetwork(nai)); 506 } 507 } 508 509 /** Adds the given network to the specified legacy type list. */ 510 public void add(int type, NetworkAgentInfo nai) { 511 if (!isTypeSupported(type)) { 512 return; // Invalid network type. 513 } 514 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 515 516 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 517 if (list.contains(nai)) { 518 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 519 return; 520 } 521 522 list.add(nai); 523 524 // Send a broadcast if this is the first network of its type or if it's the default. 525 if (list.size() == 1 || isDefaultNetwork(nai)) { 526 maybeLogBroadcast(nai, true, type); 527 sendLegacyNetworkBroadcast(nai, true, type); 528 } 529 } 530 531 /** Removes the given network from the specified legacy type list. */ 532 public void remove(int type, NetworkAgentInfo nai) { 533 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 534 if (list == null || list.isEmpty()) { 535 return; 536 } 537 538 boolean wasFirstNetwork = list.get(0).equals(nai); 539 540 if (!list.remove(nai)) { 541 return; 542 } 543 544 if (wasFirstNetwork || isDefaultNetwork(nai)) { 545 maybeLogBroadcast(nai, false, type); 546 sendLegacyNetworkBroadcast(nai, false, type); 547 } 548 549 if (!list.isEmpty() && wasFirstNetwork) { 550 if (DBG) log("Other network available for type " + type + 551 ", sending connected broadcast"); 552 maybeLogBroadcast(list.get(0), false, type); 553 sendLegacyNetworkBroadcast(list.get(0), false, type); 554 } 555 } 556 557 /** Removes the given network from all legacy type lists. */ 558 public void remove(NetworkAgentInfo nai) { 559 if (VDBG) log("Removing agent " + nai); 560 for (int type = 0; type < mTypeLists.length; type++) { 561 remove(type, nai); 562 } 563 } 564 565 private String naiToString(NetworkAgentInfo nai) { 566 String name = (nai != null) ? nai.name() : "null"; 567 String state = (nai.networkInfo != null) ? 568 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 569 "???/???"; 570 return name + " " + state; 571 } 572 573 public void dump(IndentingPrintWriter pw) { 574 for (int type = 0; type < mTypeLists.length; type++) { 575 if (mTypeLists[type] == null) continue; 576 pw.print(type + " "); 577 pw.increaseIndent(); 578 if (mTypeLists[type].size() == 0) pw.println("none"); 579 for (NetworkAgentInfo nai : mTypeLists[type]) { 580 pw.println(naiToString(nai)); 581 } 582 pw.decreaseIndent(); 583 } 584 } 585 586 // This class needs its own log method because it has a different TAG. 587 private void log(String s) { 588 Slog.d(TAG, s); 589 } 590 591 } 592 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 593 594 public ConnectivityService(Context context, INetworkManagementService netManager, 595 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 596 if (DBG) log("ConnectivityService starting up"); 597 598 NetworkCapabilities netCap = new NetworkCapabilities(); 599 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 600 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 601 mDefaultRequest = new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 602 NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(), 603 NetworkRequestInfo.REQUEST); 604 mNetworkRequests.put(mDefaultRequest, nri); 605 606 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 607 handlerThread.start(); 608 mHandler = new InternalHandler(handlerThread.getLooper()); 609 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 610 611 // setup our unique device name 612 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 613 String id = Settings.Secure.getString(context.getContentResolver(), 614 Settings.Secure.ANDROID_ID); 615 if (id != null && id.length() > 0) { 616 String name = new String("android-").concat(id); 617 SystemProperties.set("net.hostname", name); 618 } 619 } 620 621 // read our default dns server ip 622 String dns = Settings.Global.getString(context.getContentResolver(), 623 Settings.Global.DEFAULT_DNS_SERVER); 624 if (dns == null || dns.length() == 0) { 625 dns = context.getResources().getString( 626 com.android.internal.R.string.config_default_dns_server); 627 } 628 try { 629 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 630 } catch (IllegalArgumentException e) { 631 loge("Error setting defaultDns using " + dns); 632 } 633 634 mContext = checkNotNull(context, "missing Context"); 635 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 636 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 637 mKeyStore = KeyStore.getInstance(); 638 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 639 640 try { 641 mPolicyManager.registerListener(mPolicyListener); 642 } catch (RemoteException e) { 643 // ouch, no rules updates means some processes may never get network 644 loge("unable to register INetworkPolicyListener" + e.toString()); 645 } 646 647 final PowerManager powerManager = (PowerManager) context.getSystemService( 648 Context.POWER_SERVICE); 649 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 650 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 651 com.android.internal.R.integer.config_networkTransitionTimeout); 652 653 mNetTrackers = new NetworkStateTracker[ 654 ConnectivityManager.MAX_NETWORK_TYPE+1]; 655 656 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 657 658 // TODO: What is the "correct" way to do determine if this is a wifi only device? 659 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 660 log("wifiOnly=" + wifiOnly); 661 String[] naStrings = context.getResources().getStringArray( 662 com.android.internal.R.array.networkAttributes); 663 for (String naString : naStrings) { 664 try { 665 NetworkConfig n = new NetworkConfig(naString); 666 if (VDBG) log("naString=" + naString + " config=" + n); 667 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 668 loge("Error in networkAttributes - ignoring attempt to define type " + 669 n.type); 670 continue; 671 } 672 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 673 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 674 n.type); 675 continue; 676 } 677 if (mNetConfigs[n.type] != null) { 678 loge("Error in networkAttributes - ignoring attempt to redefine type " + 679 n.type); 680 continue; 681 } 682 mLegacyTypeTracker.addSupportedType(n.type); 683 684 mNetConfigs[n.type] = n; 685 mNetworksDefined++; 686 } catch(Exception e) { 687 // ignore it - leave the entry null 688 } 689 } 690 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 691 692 mProtectedNetworks = new ArrayList<Integer>(); 693 int[] protectedNetworks = context.getResources().getIntArray( 694 com.android.internal.R.array.config_protectedNetworks); 695 for (int p : protectedNetworks) { 696 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 697 mProtectedNetworks.add(p); 698 } else { 699 if (DBG) loge("Ignoring protectedNetwork " + p); 700 } 701 } 702 703 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 704 && SystemProperties.get("ro.build.type").equals("eng"); 705 706 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 707 708 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 709 710 //set up the listener for user state for creating user VPNs 711 IntentFilter intentFilter = new IntentFilter(); 712 intentFilter.addAction(Intent.ACTION_USER_STARTING); 713 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 714 mContext.registerReceiverAsUser( 715 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 716 717 try { 718 mNetd.registerObserver(mTethering); 719 mNetd.registerObserver(mDataActivityObserver); 720 } catch (RemoteException e) { 721 loge("Error registering observer :" + e); 722 } 723 724 if (DBG) { 725 mInetLog = new ArrayList(); 726 } 727 728 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 729 mSettingsObserver.observe(mContext); 730 731 mDataConnectionStats = new DataConnectionStats(mContext); 732 mDataConnectionStats.startMonitoring(); 733 734 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 735 736 IntentFilter filter = new IntentFilter(); 737 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 738 mContext.registerReceiver( 739 new BroadcastReceiver() { 740 @Override 741 public void onReceive(Context context, Intent intent) { 742 String action = intent.getAction(); 743 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 744 mHandler.sendMessage(mHandler.obtainMessage 745 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 746 } 747 } 748 }, 749 new IntentFilter(filter)); 750 751 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 752 753 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 754 } 755 756 private synchronized int nextNetworkRequestId() { 757 return mNextNetworkRequestId++; 758 } 759 760 private void assignNextNetId(NetworkAgentInfo nai) { 761 synchronized (mNetworkForNetId) { 762 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 763 int netId = mNextNetId; 764 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 765 // Make sure NetID unused. http://b/16815182 766 if (mNetworkForNetId.get(netId) == null) { 767 nai.network = new Network(netId); 768 mNetworkForNetId.put(netId, nai); 769 return; 770 } 771 } 772 } 773 throw new IllegalStateException("No free netIds"); 774 } 775 776 private boolean teardown(NetworkStateTracker netTracker) { 777 if (netTracker.teardown()) { 778 netTracker.setTeardownRequested(true); 779 return true; 780 } else { 781 return false; 782 } 783 } 784 785 /** 786 * Check if UID should be blocked from using the network represented by the given networkType. 787 * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type. 788 */ 789 private boolean isNetworkBlocked(int networkType, int uid) { 790 return isNetworkWithLinkPropertiesBlocked(getLinkPropertiesForType(networkType), uid); 791 } 792 793 /** 794 * Check if UID should be blocked from using the network represented by the given 795 * NetworkAgentInfo. 796 */ 797 private boolean isNetworkBlocked(NetworkAgentInfo nai, int uid) { 798 return isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid); 799 } 800 801 /** 802 * Check if UID should be blocked from using the network with the given LinkProperties. 803 */ 804 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 805 final boolean networkCostly; 806 final int uidRules; 807 808 final String iface = (lp == null ? "" : lp.getInterfaceName()); 809 synchronized (mRulesLock) { 810 networkCostly = mMeteredIfaces.contains(iface); 811 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 812 } 813 814 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 815 return true; 816 } 817 818 // no restrictive rules; network is visible 819 return false; 820 } 821 822 /** 823 * Return a filtered {@link NetworkInfo}, potentially marked 824 * {@link DetailedState#BLOCKED} based on 825 * {@link #isNetworkBlocked}. 826 * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type. 827 */ 828 private NetworkInfo getFilteredNetworkInfo(int networkType, int uid) { 829 NetworkInfo info = getNetworkInfoForType(networkType); 830 return getFilteredNetworkInfo(info, networkType, uid); 831 } 832 833 /* 834 * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type. 835 */ 836 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, int networkType, int uid) { 837 if (isNetworkBlocked(networkType, uid)) { 838 // network is blocked; clone and override state 839 info = new NetworkInfo(info); 840 info.setDetailedState(DetailedState.BLOCKED, null, null); 841 if (VDBG) log("returning Blocked NetworkInfo"); 842 } 843 if (mLockdownTracker != null) { 844 info = mLockdownTracker.augmentNetworkInfo(info); 845 if (VDBG) log("returning Locked NetworkInfo"); 846 } 847 return info; 848 } 849 850 private NetworkInfo getFilteredNetworkInfo(NetworkAgentInfo nai, int uid) { 851 NetworkInfo info = nai.networkInfo; 852 if (isNetworkBlocked(nai, uid)) { 853 // network is blocked; clone and override state 854 info = new NetworkInfo(info); 855 info.setDetailedState(DetailedState.BLOCKED, null, null); 856 if (DBG) log("returning Blocked NetworkInfo"); 857 } 858 if (mLockdownTracker != null) { 859 info = mLockdownTracker.augmentNetworkInfo(info); 860 if (DBG) log("returning Locked NetworkInfo"); 861 } 862 return info; 863 } 864 865 /** 866 * Return NetworkInfo for the active (i.e., connected) network interface. 867 * It is assumed that at most one network is active at a time. If more 868 * than one is active, it is indeterminate which will be returned. 869 * @return the info for the active network, or {@code null} if none is 870 * active 871 */ 872 @Override 873 public NetworkInfo getActiveNetworkInfo() { 874 enforceAccessPermission(); 875 final int uid = Binder.getCallingUid(); 876 return getNetworkInfo(mActiveDefaultNetwork, uid); 877 } 878 879 /** 880 * Find the first Provisioning network. 881 * 882 * @return NetworkInfo or null if none. 883 */ 884 private NetworkInfo getProvisioningNetworkInfo() { 885 enforceAccessPermission(); 886 887 // Find the first Provisioning Network 888 NetworkInfo provNi = null; 889 for (NetworkInfo ni : getAllNetworkInfo()) { 890 if (ni.isConnectedToProvisioningNetwork()) { 891 provNi = ni; 892 break; 893 } 894 } 895 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 896 return provNi; 897 } 898 899 /** 900 * Find the first Provisioning network or the ActiveDefaultNetwork 901 * if there is no Provisioning network 902 * 903 * @return NetworkInfo or null if none. 904 */ 905 @Override 906 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 907 enforceAccessPermission(); 908 909 NetworkInfo provNi = getProvisioningNetworkInfo(); 910 if (provNi == null) { 911 final int uid = Binder.getCallingUid(); 912 provNi = getNetworkInfo(mActiveDefaultNetwork, uid); 913 } 914 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 915 return provNi; 916 } 917 918 public NetworkInfo getActiveNetworkInfoUnfiltered() { 919 enforceAccessPermission(); 920 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 921 return getNetworkInfoForType(mActiveDefaultNetwork); 922 } 923 return null; 924 } 925 926 @Override 927 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 928 enforceConnectivityInternalPermission(); 929 return getNetworkInfo(mActiveDefaultNetwork, uid); 930 } 931 932 @Override 933 public NetworkInfo getNetworkInfo(int networkType) { 934 enforceAccessPermission(); 935 final int uid = Binder.getCallingUid(); 936 return getNetworkInfo(networkType, uid); 937 } 938 939 private NetworkInfo getNetworkInfo(int networkType, int uid) { 940 NetworkInfo info = null; 941 if (isNetworkTypeValid(networkType)) { 942 if (getNetworkInfoForType(networkType) != null) { 943 info = getFilteredNetworkInfo(networkType, uid); 944 } 945 } 946 return info; 947 } 948 949 @Override 950 public NetworkInfo getNetworkInfoForNetwork(Network network) { 951 enforceAccessPermission(); 952 if (network == null) return null; 953 954 final int uid = Binder.getCallingUid(); 955 NetworkAgentInfo nai = null; 956 synchronized (mNetworkForNetId) { 957 nai = mNetworkForNetId.get(network.netId); 958 } 959 if (nai == null) return null; 960 synchronized (nai) { 961 if (nai.networkInfo == null) return null; 962 963 return getFilteredNetworkInfo(nai, uid); 964 } 965 } 966 967 @Override 968 public NetworkInfo[] getAllNetworkInfo() { 969 enforceAccessPermission(); 970 final int uid = Binder.getCallingUid(); 971 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 972 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 973 networkType++) { 974 if (getNetworkInfoForType(networkType) != null) { 975 result.add(getFilteredNetworkInfo(networkType, uid)); 976 } 977 } 978 return result.toArray(new NetworkInfo[result.size()]); 979 } 980 981 @Override 982 public Network getNetworkForType(int networkType) { 983 enforceAccessPermission(); 984 final int uid = Binder.getCallingUid(); 985 if (isNetworkBlocked(networkType, uid)) { 986 return null; 987 } 988 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 989 return (nai == null) ? null : nai.network; 990 } 991 992 @Override 993 public Network[] getAllNetworks() { 994 enforceAccessPermission(); 995 final ArrayList<Network> result = new ArrayList(); 996 synchronized (mNetworkForNetId) { 997 for (int i = 0; i < mNetworkForNetId.size(); i++) { 998 result.add(new Network(mNetworkForNetId.valueAt(i).network)); 999 } 1000 } 1001 return result.toArray(new Network[result.size()]); 1002 } 1003 1004 @Override 1005 public boolean isNetworkSupported(int networkType) { 1006 enforceAccessPermission(); 1007 return (isNetworkTypeValid(networkType) && (getNetworkInfoForType(networkType) != null)); 1008 } 1009 1010 /** 1011 * Return LinkProperties for the active (i.e., connected) default 1012 * network interface. It is assumed that at most one default network 1013 * is active at a time. If more than one is active, it is indeterminate 1014 * which will be returned. 1015 * @return the ip properties for the active network, or {@code null} if 1016 * none is active 1017 */ 1018 @Override 1019 public LinkProperties getActiveLinkProperties() { 1020 return getLinkPropertiesForType(mActiveDefaultNetwork); 1021 } 1022 1023 @Override 1024 public LinkProperties getLinkPropertiesForType(int networkType) { 1025 enforceAccessPermission(); 1026 if (isNetworkTypeValid(networkType)) { 1027 return getLinkPropertiesForTypeInternal(networkType); 1028 } 1029 return null; 1030 } 1031 1032 // TODO - this should be ALL networks 1033 @Override 1034 public LinkProperties getLinkProperties(Network network) { 1035 enforceAccessPermission(); 1036 NetworkAgentInfo nai = null; 1037 synchronized (mNetworkForNetId) { 1038 nai = mNetworkForNetId.get(network.netId); 1039 } 1040 1041 if (nai != null) { 1042 synchronized (nai) { 1043 return new LinkProperties(nai.linkProperties); 1044 } 1045 } 1046 return null; 1047 } 1048 1049 @Override 1050 public NetworkCapabilities getNetworkCapabilities(Network network) { 1051 enforceAccessPermission(); 1052 NetworkAgentInfo nai = null; 1053 synchronized (mNetworkForNetId) { 1054 nai = mNetworkForNetId.get(network.netId); 1055 } 1056 if (nai != null) { 1057 synchronized (nai) { 1058 return new NetworkCapabilities(nai.networkCapabilities); 1059 } 1060 } 1061 return null; 1062 } 1063 1064 @Override 1065 public NetworkState[] getAllNetworkState() { 1066 enforceAccessPermission(); 1067 final int uid = Binder.getCallingUid(); 1068 final ArrayList<NetworkState> result = Lists.newArrayList(); 1069 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1070 networkType++) { 1071 if (getNetworkInfoForType(networkType) != null) { 1072 final NetworkInfo info = getFilteredNetworkInfo(networkType, uid); 1073 final LinkProperties lp = getLinkPropertiesForTypeInternal(networkType); 1074 final NetworkCapabilities netcap = getNetworkCapabilitiesForType(networkType); 1075 result.add(new NetworkState(info, lp, netcap)); 1076 } 1077 } 1078 return result.toArray(new NetworkState[result.size()]); 1079 } 1080 1081 private NetworkState getNetworkStateUnchecked(int networkType) { 1082 if (isNetworkTypeValid(networkType)) { 1083 NetworkInfo info = getNetworkInfoForType(networkType); 1084 if (info != null) { 1085 return new NetworkState(info, 1086 getLinkPropertiesForTypeInternal(networkType), 1087 getNetworkCapabilitiesForType(networkType)); 1088 } 1089 } 1090 return null; 1091 } 1092 1093 @Override 1094 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1095 enforceAccessPermission(); 1096 1097 final long token = Binder.clearCallingIdentity(); 1098 try { 1099 final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork); 1100 if (state != null) { 1101 try { 1102 return mPolicyManager.getNetworkQuotaInfo(state); 1103 } catch (RemoteException e) { 1104 } 1105 } 1106 return null; 1107 } finally { 1108 Binder.restoreCallingIdentity(token); 1109 } 1110 } 1111 1112 @Override 1113 public boolean isActiveNetworkMetered() { 1114 enforceAccessPermission(); 1115 final long token = Binder.clearCallingIdentity(); 1116 try { 1117 return isNetworkMeteredUnchecked(mActiveDefaultNetwork); 1118 } finally { 1119 Binder.restoreCallingIdentity(token); 1120 } 1121 } 1122 1123 private boolean isNetworkMeteredUnchecked(int networkType) { 1124 final NetworkState state = getNetworkStateUnchecked(networkType); 1125 if (state != null) { 1126 try { 1127 return mPolicyManager.isNetworkMetered(state); 1128 } catch (RemoteException e) { 1129 } 1130 } 1131 return false; 1132 } 1133 1134 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1135 @Override 1136 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1137 int deviceType = Integer.parseInt(label); 1138 sendDataActivityBroadcast(deviceType, active, tsNanos); 1139 } 1140 }; 1141 1142 /** 1143 * Ensure that a network route exists to deliver traffic to the specified 1144 * host via the specified network interface. 1145 * @param networkType the type of the network over which traffic to the 1146 * specified host is to be routed 1147 * @param hostAddress the IP address of the host to which the route is 1148 * desired 1149 * @return {@code true} on success, {@code false} on failure 1150 */ 1151 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1152 enforceChangePermission(); 1153 if (mProtectedNetworks.contains(networkType)) { 1154 enforceConnectivityInternalPermission(); 1155 } 1156 1157 InetAddress addr; 1158 try { 1159 addr = InetAddress.getByAddress(hostAddress); 1160 } catch (UnknownHostException e) { 1161 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1162 return false; 1163 } 1164 1165 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1166 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1167 return false; 1168 } 1169 1170 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1171 if (nai == null) { 1172 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1173 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1174 } else { 1175 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1176 } 1177 return false; 1178 } 1179 1180 DetailedState netState; 1181 synchronized (nai) { 1182 netState = nai.networkInfo.getDetailedState(); 1183 } 1184 1185 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1186 if (VDBG) { 1187 log("requestRouteToHostAddress on down network " 1188 + "(" + networkType + ") - dropped" 1189 + " netState=" + netState); 1190 } 1191 return false; 1192 } 1193 1194 final int uid = Binder.getCallingUid(); 1195 final long token = Binder.clearCallingIdentity(); 1196 try { 1197 LinkProperties lp; 1198 int netId; 1199 synchronized (nai) { 1200 lp = nai.linkProperties; 1201 netId = nai.network.netId; 1202 } 1203 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1204 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1205 return ok; 1206 } finally { 1207 Binder.restoreCallingIdentity(token); 1208 } 1209 } 1210 1211 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1212 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1213 if (bestRoute == null) { 1214 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1215 } else { 1216 String iface = bestRoute.getInterface(); 1217 if (bestRoute.getGateway().equals(addr)) { 1218 // if there is no better route, add the implied hostroute for our gateway 1219 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1220 } else { 1221 // if we will connect to this through another route, add a direct route 1222 // to it's gateway 1223 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1224 } 1225 } 1226 if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1227 try { 1228 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1229 } catch (Exception e) { 1230 // never crash - catch them all 1231 if (DBG) loge("Exception trying to add a route: " + e); 1232 return false; 1233 } 1234 return true; 1235 } 1236 1237 public void setDataDependency(int networkType, boolean met) { 1238 enforceConnectivityInternalPermission(); 1239 1240 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1241 (met ? ENABLED : DISABLED), networkType)); 1242 } 1243 1244 private void handleSetDependencyMet(int networkType, boolean met) { 1245 if (mNetTrackers[networkType] != null) { 1246 if (DBG) { 1247 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1248 } 1249 mNetTrackers[networkType].setDependencyMet(met); 1250 } 1251 } 1252 1253 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1254 @Override 1255 public void onUidRulesChanged(int uid, int uidRules) { 1256 // caller is NPMS, since we only register with them 1257 if (LOGD_RULES) { 1258 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1259 } 1260 1261 synchronized (mRulesLock) { 1262 // skip update when we've already applied rules 1263 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1264 if (oldRules == uidRules) return; 1265 1266 mUidRules.put(uid, uidRules); 1267 } 1268 1269 // TODO: notify UID when it has requested targeted updates 1270 } 1271 1272 @Override 1273 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1274 // caller is NPMS, since we only register with them 1275 if (LOGD_RULES) { 1276 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1277 } 1278 1279 synchronized (mRulesLock) { 1280 mMeteredIfaces.clear(); 1281 for (String iface : meteredIfaces) { 1282 mMeteredIfaces.add(iface); 1283 } 1284 } 1285 } 1286 1287 @Override 1288 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1289 // caller is NPMS, since we only register with them 1290 if (LOGD_RULES) { 1291 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1292 } 1293 1294 // kick off connectivity change broadcast for active network, since 1295 // global background policy change is radical. 1296 final int networkType = mActiveDefaultNetwork; 1297 if (isNetworkTypeValid(networkType)) { 1298 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1299 if (tracker != null) { 1300 final NetworkInfo info = tracker.getNetworkInfo(); 1301 if (info != null && info.isConnected()) { 1302 sendConnectedBroadcast(info); 1303 } 1304 } 1305 } 1306 } 1307 }; 1308 1309 @Override 1310 public void setPolicyDataEnable(int networkType, boolean enabled) { 1311 // only someone like NPMS should only be calling us 1312 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1313 1314 mHandler.sendMessage(mHandler.obtainMessage( 1315 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1316 } 1317 1318 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1319 // TODO - handle this passing to factories 1320// if (isNetworkTypeValid(networkType)) { 1321// final NetworkStateTracker tracker = mNetTrackers[networkType]; 1322// if (tracker != null) { 1323// tracker.setPolicyDataEnable(enabled); 1324// } 1325// } 1326 } 1327 1328 private void enforceInternetPermission() { 1329 mContext.enforceCallingOrSelfPermission( 1330 android.Manifest.permission.INTERNET, 1331 "ConnectivityService"); 1332 } 1333 1334 private void enforceAccessPermission() { 1335 mContext.enforceCallingOrSelfPermission( 1336 android.Manifest.permission.ACCESS_NETWORK_STATE, 1337 "ConnectivityService"); 1338 } 1339 1340 private void enforceChangePermission() { 1341 mContext.enforceCallingOrSelfPermission( 1342 android.Manifest.permission.CHANGE_NETWORK_STATE, 1343 "ConnectivityService"); 1344 } 1345 1346 private void enforceTetherAccessPermission() { 1347 mContext.enforceCallingOrSelfPermission( 1348 android.Manifest.permission.ACCESS_NETWORK_STATE, 1349 "ConnectivityService"); 1350 } 1351 1352 private void enforceConnectivityInternalPermission() { 1353 mContext.enforceCallingOrSelfPermission( 1354 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1355 "ConnectivityService"); 1356 } 1357 1358 public void sendConnectedBroadcast(NetworkInfo info) { 1359 enforceConnectivityInternalPermission(); 1360 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 1361 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1362 } 1363 1364 private void sendInetConditionBroadcast(NetworkInfo info) { 1365 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1366 } 1367 1368 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1369 if (mLockdownTracker != null) { 1370 info = mLockdownTracker.augmentNetworkInfo(info); 1371 } 1372 1373 Intent intent = new Intent(bcastType); 1374 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1375 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1376 if (info.isFailover()) { 1377 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1378 info.setFailover(false); 1379 } 1380 if (info.getReason() != null) { 1381 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1382 } 1383 if (info.getExtraInfo() != null) { 1384 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1385 info.getExtraInfo()); 1386 } 1387 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1388 return intent; 1389 } 1390 1391 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1392 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1393 } 1394 1395 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1396 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1397 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1398 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1399 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1400 final long ident = Binder.clearCallingIdentity(); 1401 try { 1402 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1403 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1404 } finally { 1405 Binder.restoreCallingIdentity(ident); 1406 } 1407 } 1408 1409 private void sendStickyBroadcast(Intent intent) { 1410 synchronized(this) { 1411 if (!mSystemReady) { 1412 mInitialBroadcast = new Intent(intent); 1413 } 1414 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1415 if (DBG) { 1416 log("sendStickyBroadcast: action=" + intent.getAction()); 1417 } 1418 1419 final long ident = Binder.clearCallingIdentity(); 1420 try { 1421 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 1422 } finally { 1423 Binder.restoreCallingIdentity(ident); 1424 } 1425 } 1426 } 1427 1428 void systemReady() { 1429 // start network sampling .. 1430 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 1431 intent.setPackage(mContext.getPackageName()); 1432 1433 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 1434 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 1435 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 1436 1437 loadGlobalProxy(); 1438 1439 synchronized(this) { 1440 mSystemReady = true; 1441 if (mInitialBroadcast != null) { 1442 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1443 mInitialBroadcast = null; 1444 } 1445 } 1446 // load the global proxy at startup 1447 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1448 1449 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 1450 // for user to unlock device. 1451 if (!updateLockdownVpn()) { 1452 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 1453 mContext.registerReceiver(mUserPresentReceiver, filter); 1454 } 1455 1456 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1457 1458 mPermissionMonitor.startMonitoring(); 1459 } 1460 1461 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 1462 @Override 1463 public void onReceive(Context context, Intent intent) { 1464 // Try creating lockdown tracker, since user present usually means 1465 // unlocked keystore. 1466 if (updateLockdownVpn()) { 1467 mContext.unregisterReceiver(this); 1468 } 1469 } 1470 }; 1471 1472 /** @hide */ 1473 @Override 1474 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 1475 enforceConnectivityInternalPermission(); 1476 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 1477// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 1478 } 1479 1480 /** 1481 * Setup data activity tracking for the given network. 1482 * 1483 * Every {@code setupDataActivityTracking} should be paired with a 1484 * {@link #removeDataActivityTracking} for cleanup. 1485 */ 1486 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1487 final String iface = networkAgent.linkProperties.getInterfaceName(); 1488 1489 final int timeout; 1490 int type = ConnectivityManager.TYPE_NONE; 1491 1492 if (networkAgent.networkCapabilities.hasTransport( 1493 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1494 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1495 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1496 5); 1497 type = ConnectivityManager.TYPE_MOBILE; 1498 } else if (networkAgent.networkCapabilities.hasTransport( 1499 NetworkCapabilities.TRANSPORT_WIFI)) { 1500 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1501 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1502 0); 1503 type = ConnectivityManager.TYPE_WIFI; 1504 } else { 1505 // do not track any other networks 1506 timeout = 0; 1507 } 1508 1509 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1510 try { 1511 mNetd.addIdleTimer(iface, timeout, type); 1512 } catch (Exception e) { 1513 // You shall not crash! 1514 loge("Exception in setupDataActivityTracking " + e); 1515 } 1516 } 1517 } 1518 1519 /** 1520 * Remove data activity tracking when network disconnects. 1521 */ 1522 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1523 final String iface = networkAgent.linkProperties.getInterfaceName(); 1524 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1525 1526 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1527 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1528 try { 1529 // the call fails silently if no idletimer setup for this interface 1530 mNetd.removeIdleTimer(iface); 1531 } catch (Exception e) { 1532 loge("Exception in removeDataActivityTracking " + e); 1533 } 1534 } 1535 } 1536 1537 /** 1538 * Reads the network specific MTU size from reources. 1539 * and set it on it's iface. 1540 */ 1541 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1542 final String iface = newLp.getInterfaceName(); 1543 final int mtu = newLp.getMtu(); 1544 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1545 if (VDBG) log("identical MTU - not setting"); 1546 return; 1547 } 1548 1549 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1550 loge("Unexpected mtu value: " + mtu + ", " + iface); 1551 return; 1552 } 1553 1554 // Cannot set MTU without interface name 1555 if (TextUtils.isEmpty(iface)) { 1556 loge("Setting MTU size with null iface."); 1557 return; 1558 } 1559 1560 try { 1561 if (DBG) log("Setting MTU size: " + iface + ", " + mtu); 1562 mNetd.setMtu(iface, mtu); 1563 } catch (Exception e) { 1564 Slog.e(TAG, "exception in setMtu()" + e); 1565 } 1566 } 1567 1568 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1569 1570 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1571 if (isDefaultNetwork(nai) == false) { 1572 return; 1573 } 1574 1575 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1576 String[] values = null; 1577 if (tcpBufferSizes != null) { 1578 values = tcpBufferSizes.split(","); 1579 } 1580 1581 if (values == null || values.length != 6) { 1582 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1583 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1584 values = tcpBufferSizes.split(","); 1585 } 1586 1587 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1588 1589 try { 1590 if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1591 1592 final String prefix = "/sys/kernel/ipv4/tcp_"; 1593 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1594 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1595 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1596 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1597 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1598 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1599 mCurrentTcpBufferSizes = tcpBufferSizes; 1600 } catch (IOException e) { 1601 loge("Can't set TCP buffer sizes:" + e); 1602 } 1603 1604 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 1605 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 1606 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1607 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 1608 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1609 if (rwndValue != 0) { 1610 SystemProperties.set(sysctlKey, rwndValue.toString()); 1611 } 1612 } 1613 1614 private void flushVmDnsCache() { 1615 /* 1616 * Tell the VMs to toss their DNS caches 1617 */ 1618 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1619 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1620 /* 1621 * Connectivity events can happen before boot has completed ... 1622 */ 1623 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1624 final long ident = Binder.clearCallingIdentity(); 1625 try { 1626 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1627 } finally { 1628 Binder.restoreCallingIdentity(ident); 1629 } 1630 } 1631 1632 @Override 1633 public int getRestoreDefaultNetworkDelay(int networkType) { 1634 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1635 NETWORK_RESTORE_DELAY_PROP_NAME); 1636 if(restoreDefaultNetworkDelayStr != null && 1637 restoreDefaultNetworkDelayStr.length() != 0) { 1638 try { 1639 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1640 } catch (NumberFormatException e) { 1641 } 1642 } 1643 // if the system property isn't set, use the value for the apn type 1644 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1645 1646 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1647 (mNetConfigs[networkType] != null)) { 1648 ret = mNetConfigs[networkType].restoreTime; 1649 } 1650 return ret; 1651 } 1652 1653 @Override 1654 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1655 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1656 if (mContext.checkCallingOrSelfPermission( 1657 android.Manifest.permission.DUMP) 1658 != PackageManager.PERMISSION_GRANTED) { 1659 pw.println("Permission Denial: can't dump ConnectivityService " + 1660 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1661 Binder.getCallingUid()); 1662 return; 1663 } 1664 1665 pw.println("NetworkFactories for:"); 1666 pw.increaseIndent(); 1667 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1668 pw.println(nfi.name); 1669 } 1670 pw.decreaseIndent(); 1671 pw.println(); 1672 1673 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 1674 pw.print("Active default network: "); 1675 if (defaultNai == null) { 1676 pw.println("none"); 1677 } else { 1678 pw.println(defaultNai.network.netId); 1679 } 1680 pw.println(); 1681 1682 pw.println("Current Networks:"); 1683 pw.increaseIndent(); 1684 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1685 pw.println(nai.toString()); 1686 pw.increaseIndent(); 1687 pw.println("Requests:"); 1688 pw.increaseIndent(); 1689 for (int i = 0; i < nai.networkRequests.size(); i++) { 1690 pw.println(nai.networkRequests.valueAt(i).toString()); 1691 } 1692 pw.decreaseIndent(); 1693 pw.println("Lingered:"); 1694 pw.increaseIndent(); 1695 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1696 pw.decreaseIndent(); 1697 pw.decreaseIndent(); 1698 } 1699 pw.decreaseIndent(); 1700 pw.println(); 1701 1702 pw.println("Network Requests:"); 1703 pw.increaseIndent(); 1704 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1705 pw.println(nri.toString()); 1706 } 1707 pw.println(); 1708 pw.decreaseIndent(); 1709 1710 pw.print("mActiveDefaultNetwork: " + mActiveDefaultNetwork); 1711 if (mActiveDefaultNetwork != TYPE_NONE) { 1712 NetworkInfo activeNetworkInfo = getActiveNetworkInfo(); 1713 if (activeNetworkInfo != null) { 1714 pw.print(" " + activeNetworkInfo.getState() + 1715 "/" + activeNetworkInfo.getDetailedState()); 1716 } 1717 } 1718 pw.println(); 1719 1720 pw.println("mLegacyTypeTracker:"); 1721 pw.increaseIndent(); 1722 mLegacyTypeTracker.dump(pw); 1723 pw.decreaseIndent(); 1724 pw.println(); 1725 1726 synchronized (this) { 1727 pw.println("NetworkTransitionWakeLock is currently " + 1728 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 1729 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 1730 } 1731 pw.println(); 1732 1733 mTethering.dump(fd, pw, args); 1734 1735 if (mInetLog != null) { 1736 pw.println(); 1737 pw.println("Inet condition reports:"); 1738 pw.increaseIndent(); 1739 for(int i = 0; i < mInetLog.size(); i++) { 1740 pw.println(mInetLog.get(i)); 1741 } 1742 pw.decreaseIndent(); 1743 } 1744 } 1745 1746 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { 1747 if (nai.network == null) return false; 1748 final NetworkAgentInfo officialNai; 1749 synchronized (mNetworkForNetId) { 1750 officialNai = mNetworkForNetId.get(nai.network.netId); 1751 } 1752 if (officialNai != null && officialNai.equals(nai)) return true; 1753 if (officialNai != null || VDBG) { 1754 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1755 " - " + nai); 1756 } 1757 return false; 1758 } 1759 1760 private boolean isRequest(NetworkRequest request) { 1761 return mNetworkRequests.get(request).isRequest; 1762 } 1763 1764 // must be stateless - things change under us. 1765 private class NetworkStateTrackerHandler extends Handler { 1766 public NetworkStateTrackerHandler(Looper looper) { 1767 super(looper); 1768 } 1769 1770 @Override 1771 public void handleMessage(Message msg) { 1772 NetworkInfo info; 1773 switch (msg.what) { 1774 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1775 handleAsyncChannelHalfConnect(msg); 1776 break; 1777 } 1778 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1779 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1780 if (nai != null) nai.asyncChannel.disconnect(); 1781 break; 1782 } 1783 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1784 handleAsyncChannelDisconnected(msg); 1785 break; 1786 } 1787 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1788 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1789 if (nai == null) { 1790 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 1791 } else { 1792 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 1793 } 1794 break; 1795 } 1796 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1797 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1798 if (nai == null) { 1799 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 1800 } else { 1801 if (VDBG) { 1802 log("Update of LinkProperties for " + nai.name() + 1803 "; created=" + nai.created); 1804 } 1805 LinkProperties oldLp = nai.linkProperties; 1806 synchronized (nai) { 1807 nai.linkProperties = (LinkProperties)msg.obj; 1808 } 1809 if (nai.created) updateLinkProperties(nai, oldLp); 1810 } 1811 break; 1812 } 1813 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1814 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1815 if (nai == null) { 1816 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 1817 break; 1818 } 1819 info = (NetworkInfo) msg.obj; 1820 updateNetworkInfo(nai, info); 1821 break; 1822 } 1823 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1824 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1825 if (nai == null) { 1826 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 1827 break; 1828 } 1829 Integer score = (Integer) msg.obj; 1830 if (score != null) updateNetworkScore(nai, score.intValue()); 1831 break; 1832 } 1833 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1834 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1835 if (nai == null) { 1836 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 1837 break; 1838 } 1839 try { 1840 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1841 } catch (Exception e) { 1842 // Never crash! 1843 loge("Exception in addVpnUidRanges: " + e); 1844 } 1845 break; 1846 } 1847 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 1848 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1849 if (nai == null) { 1850 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 1851 break; 1852 } 1853 try { 1854 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1855 } catch (Exception e) { 1856 // Never crash! 1857 loge("Exception in removeVpnUidRanges: " + e); 1858 } 1859 break; 1860 } 1861 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 1862 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1863 if (nai == null) { 1864 loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); 1865 break; 1866 } 1867 if (nai.created && !nai.networkMisc.explicitlySelected) { 1868 loge("ERROR: created network explicitly selected."); 1869 } 1870 nai.networkMisc.explicitlySelected = true; 1871 break; 1872 } 1873 case NetworkMonitor.EVENT_NETWORK_TESTED: { 1874 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1875 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_VALIDATED")) { 1876 boolean valid = (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 1877 if (valid) { 1878 if (DBG) log("Validated " + nai.name()); 1879 final boolean previouslyValidated = nai.validated; 1880 final int previousScore = nai.getCurrentScore(); 1881 nai.validated = true; 1882 rematchNetworkAndRequests(nai, !previouslyValidated); 1883 // If score has changed, rebroadcast to NetworkFactories. b/17726566 1884 if (nai.getCurrentScore() != previousScore) { 1885 sendUpdatedScoreToFactories(nai); 1886 } 1887 } 1888 updateInetCondition(nai, valid); 1889 // Let the NetworkAgent know the state of its network 1890 nai.asyncChannel.sendMessage( 1891 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 1892 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 1893 0, null); 1894 } 1895 break; 1896 } 1897 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 1898 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 1899 if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { 1900 handleLingerComplete(nai); 1901 } 1902 break; 1903 } 1904 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 1905 if (msg.arg1 == 0) { 1906 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 1907 } else { 1908 NetworkAgentInfo nai = null; 1909 synchronized (mNetworkForNetId) { 1910 nai = mNetworkForNetId.get(msg.arg2); 1911 } 1912 if (nai == null) { 1913 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 1914 break; 1915 } 1916 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 1917 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 1918 } 1919 break; 1920 } 1921 case NetworkStateTracker.EVENT_STATE_CHANGED: { 1922 info = (NetworkInfo) msg.obj; 1923 NetworkInfo.State state = info.getState(); 1924 1925 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 1926 (state == NetworkInfo.State.DISCONNECTED) || 1927 (state == NetworkInfo.State.SUSPENDED)) { 1928 log("ConnectivityChange for " + 1929 info.getTypeName() + ": " + 1930 state + "/" + info.getDetailedState()); 1931 } 1932 1933 EventLogTags.writeConnectivityStateChanged( 1934 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 1935 1936 if (info.isConnectedToProvisioningNetwork()) { 1937 /** 1938 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 1939 * for now its an in between network, its a network that 1940 * is actually a default network but we don't want it to be 1941 * announced as such to keep background applications from 1942 * trying to use it. It turns out that some still try so we 1943 * take the additional step of clearing any default routes 1944 * to the link that may have incorrectly setup by the lower 1945 * levels. 1946 */ 1947 LinkProperties lp = getLinkPropertiesForTypeInternal(info.getType()); 1948 if (DBG) { 1949 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 1950 } 1951 1952 // Clear any default routes setup by the radio so 1953 // any activity by applications trying to use this 1954 // connection will fail until the provisioning network 1955 // is enabled. 1956 /* 1957 for (RouteInfo r : lp.getRoutes()) { 1958 removeRoute(lp, r, TO_DEFAULT_TABLE, 1959 mNetTrackers[info.getType()].getNetwork().netId); 1960 } 1961 */ 1962 } else if (state == NetworkInfo.State.DISCONNECTED) { 1963 } else if (state == NetworkInfo.State.SUSPENDED) { 1964 } else if (state == NetworkInfo.State.CONNECTED) { 1965 // handleConnect(info); 1966 } 1967 notifyLockdownVpn(null); 1968 break; 1969 } 1970 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 1971 info = (NetworkInfo) msg.obj; 1972 // TODO: Temporary allowing network configuration 1973 // change not resetting sockets. 1974 // @see bug/4455071 1975 /* 1976 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 1977 false); 1978 */ 1979 break; 1980 } 1981 } 1982 } 1983 } 1984 1985 private void handleAsyncChannelHalfConnect(Message msg) { 1986 AsyncChannel ac = (AsyncChannel) msg.obj; 1987 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 1988 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 1989 if (VDBG) log("NetworkFactory connected"); 1990 // A network factory has connected. Send it all current NetworkRequests. 1991 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1992 if (nri.isRequest == false) continue; 1993 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 1994 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 1995 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 1996 } 1997 } else { 1998 loge("Error connecting NetworkFactory"); 1999 mNetworkFactoryInfos.remove(msg.obj); 2000 } 2001 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2002 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2003 if (VDBG) log("NetworkAgent connected"); 2004 // A network agent has requested a connection. Establish the connection. 2005 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2006 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2007 } else { 2008 loge("Error connecting NetworkAgent"); 2009 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2010 if (nai != null) { 2011 synchronized (mNetworkForNetId) { 2012 mNetworkForNetId.remove(nai.network.netId); 2013 } 2014 // Just in case. 2015 mLegacyTypeTracker.remove(nai); 2016 } 2017 } 2018 } 2019 } 2020 private void handleAsyncChannelDisconnected(Message msg) { 2021 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2022 if (nai != null) { 2023 if (DBG) { 2024 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2025 } 2026 // A network agent has disconnected. 2027 if (nai.created) { 2028 // Tell netd to clean up the configuration for this network 2029 // (routing rules, DNS, etc). 2030 try { 2031 mNetd.removeNetwork(nai.network.netId); 2032 } catch (Exception e) { 2033 loge("Exception removing network: " + e); 2034 } 2035 } 2036 // TODO - if we move the logic to the network agent (have them disconnect 2037 // because they lost all their requests or because their score isn't good) 2038 // then they would disconnect organically, report their new state and then 2039 // disconnect the channel. 2040 if (nai.networkInfo.isConnected()) { 2041 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2042 null, null); 2043 } 2044 if (isDefaultNetwork(nai)) { 2045 mDefaultInetConditionPublished = 0; 2046 } 2047 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2048 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2049 mNetworkAgentInfos.remove(msg.replyTo); 2050 updateClat(null, nai.linkProperties, nai); 2051 mLegacyTypeTracker.remove(nai); 2052 synchronized (mNetworkForNetId) { 2053 mNetworkForNetId.remove(nai.network.netId); 2054 } 2055 // Since we've lost the network, go through all the requests that 2056 // it was satisfying and see if any other factory can satisfy them. 2057 // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests 2058 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 2059 for (int i = 0; i < nai.networkRequests.size(); i++) { 2060 NetworkRequest request = nai.networkRequests.valueAt(i); 2061 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2062 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2063 if (DBG) { 2064 log("Checking for replacement network to handle request " + request ); 2065 } 2066 mNetworkForRequestId.remove(request.requestId); 2067 sendUpdatedScoreToFactories(request, 0); 2068 NetworkAgentInfo alternative = null; 2069 for (Map.Entry entry : mNetworkAgentInfos.entrySet()) { 2070 NetworkAgentInfo existing = (NetworkAgentInfo)entry.getValue(); 2071 if (existing.networkInfo.isConnected() && 2072 request.networkCapabilities.satisfiedByNetworkCapabilities( 2073 existing.networkCapabilities) && 2074 (alternative == null || 2075 alternative.getCurrentScore() < existing.getCurrentScore())) { 2076 alternative = existing; 2077 } 2078 } 2079 if (alternative != null) { 2080 if (DBG) log(" found replacement in " + alternative.name()); 2081 if (!toActivate.contains(alternative)) { 2082 toActivate.add(alternative); 2083 } 2084 } 2085 } 2086 } 2087 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2088 removeDataActivityTracking(nai); 2089 mActiveDefaultNetwork = ConnectivityManager.TYPE_NONE; 2090 notifyLockdownVpn(nai); 2091 requestNetworkTransitionWakelock(nai.name()); 2092 } 2093 for (NetworkAgentInfo networkToActivate : toActivate) { 2094 networkToActivate.networkLingered.clear(); 2095 networkToActivate.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2096 rematchNetworkAndRequests(networkToActivate, false); 2097 } 2098 } 2099 } 2100 2101 private void handleRegisterNetworkRequest(Message msg) { 2102 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2103 final NetworkCapabilities newCap = nri.request.networkCapabilities; 2104 int score = 0; 2105 2106 // Check for the best currently alive network that satisfies this request 2107 NetworkAgentInfo bestNetwork = null; 2108 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2109 if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); 2110 if (newCap.satisfiedByNetworkCapabilities(network.networkCapabilities)) { 2111 if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); 2112 if ((bestNetwork == null) || 2113 bestNetwork.getCurrentScore() < network.getCurrentScore()) { 2114 if (!nri.isRequest) { 2115 // Not setting bestNetwork here as a listening NetworkRequest may be 2116 // satisfied by multiple Networks. Instead the request is added to 2117 // each satisfying Network and notified about each. 2118 network.addRequest(nri.request); 2119 notifyNetworkCallback(network, nri); 2120 } else { 2121 bestNetwork = network; 2122 } 2123 } 2124 } 2125 } 2126 if (bestNetwork != null) { 2127 if (DBG) log("using " + bestNetwork.name()); 2128 if (bestNetwork.networkInfo.isConnected()) { 2129 // Cancel any lingering so the linger timeout doesn't teardown this network 2130 // even though we have a request for it. 2131 bestNetwork.networkLingered.clear(); 2132 bestNetwork.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2133 } 2134 // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests 2135 bestNetwork.addRequest(nri.request); 2136 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 2137 notifyNetworkCallback(bestNetwork, nri); 2138 score = bestNetwork.getCurrentScore(); 2139 if (nri.request.legacyType != TYPE_NONE) { 2140 mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); 2141 } 2142 } 2143 mNetworkRequests.put(nri.request, nri); 2144 if (nri.isRequest) { 2145 if (DBG) log("sending new NetworkRequest to factories"); 2146 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2147 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 2148 0, nri.request); 2149 } 2150 } 2151 } 2152 2153 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2154 NetworkRequestInfo nri = mNetworkRequests.get(request); 2155 if (nri != null) { 2156 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2157 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2158 return; 2159 } 2160 if (DBG) log("releasing NetworkRequest " + request); 2161 nri.unlinkDeathRecipient(); 2162 mNetworkRequests.remove(request); 2163 if (nri.isRequest) { 2164 // Find all networks that are satisfying this request and remove the request 2165 // from their request lists. 2166 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2167 if (nai.networkRequests.get(nri.request.requestId) != null) { 2168 nai.networkRequests.remove(nri.request.requestId); 2169 if (DBG) { 2170 log(" Removing from current network " + nai.name() + 2171 ", leaving " + nai.networkRequests.size() + 2172 " requests."); 2173 } 2174 // check if has any requests remaining and if not, 2175 // disconnect (unless it's a VPN). 2176 boolean keep = nai.isVPN(); 2177 for (int i = 0; i < nai.networkRequests.size() && !keep; i++) { 2178 NetworkRequest r = nai.networkRequests.valueAt(i); 2179 if (isRequest(r)) keep = true; 2180 } 2181 if (!keep) { 2182 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2183 nai.asyncChannel.disconnect(); 2184 } 2185 } 2186 } 2187 2188 // Maintain the illusion. When this request arrived, we might have preteneded 2189 // that a network connected to serve it, even though the network was already 2190 // connected. Now that this request has gone away, we might have to pretend 2191 // that the network disconnected. LegacyTypeTracker will generate that 2192 // phatom disconnect for this type. 2193 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2194 if (nai != null) { 2195 mNetworkForRequestId.remove(nri.request.requestId); 2196 if (nri.request.legacyType != TYPE_NONE) { 2197 mLegacyTypeTracker.remove(nri.request.legacyType, nai); 2198 } 2199 } 2200 2201 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2202 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2203 nri.request); 2204 } 2205 } else { 2206 // listens don't have a singular affectedNetwork. Check all networks to see 2207 // if this listen request applies and remove it. 2208 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2209 nai.networkRequests.remove(nri.request.requestId); 2210 } 2211 } 2212 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2213 } 2214 } 2215 2216 private class InternalHandler extends Handler { 2217 public InternalHandler(Looper looper) { 2218 super(looper); 2219 } 2220 2221 @Override 2222 public void handleMessage(Message msg) { 2223 NetworkInfo info; 2224 switch (msg.what) { 2225 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2226 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2227 String causedBy = null; 2228 synchronized (ConnectivityService.this) { 2229 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2230 mNetTransitionWakeLock.isHeld()) { 2231 mNetTransitionWakeLock.release(); 2232 causedBy = mNetTransitionWakeLockCausedBy; 2233 } else { 2234 break; 2235 } 2236 } 2237 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2238 log("Failed to find a new network - expiring NetTransition Wakelock"); 2239 } else { 2240 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 2241 " cleared because we found a replacement network"); 2242 } 2243 break; 2244 } 2245 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2246 handleDeprecatedGlobalHttpProxy(); 2247 break; 2248 } 2249 case EVENT_SET_DEPENDENCY_MET: { 2250 boolean met = (msg.arg1 == ENABLED); 2251 handleSetDependencyMet(msg.arg2, met); 2252 break; 2253 } 2254 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 2255 Intent intent = (Intent)msg.obj; 2256 sendStickyBroadcast(intent); 2257 break; 2258 } 2259 case EVENT_SET_POLICY_DATA_ENABLE: { 2260 final int networkType = msg.arg1; 2261 final boolean enabled = msg.arg2 == ENABLED; 2262 handleSetPolicyDataEnable(networkType, enabled); 2263 break; 2264 } 2265 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 2266 int tag = mEnableFailFastMobileDataTag.get(); 2267 if (msg.arg1 == tag) { 2268 MobileDataStateTracker mobileDst = 2269 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 2270 if (mobileDst != null) { 2271 mobileDst.setEnableFailFastMobileData(msg.arg2); 2272 } 2273 } else { 2274 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 2275 + " != tag:" + tag); 2276 } 2277 break; 2278 } 2279 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 2280 handleNetworkSamplingTimeout(); 2281 break; 2282 } 2283 case EVENT_PROXY_HAS_CHANGED: { 2284 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2285 break; 2286 } 2287 case EVENT_REGISTER_NETWORK_FACTORY: { 2288 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2289 break; 2290 } 2291 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2292 handleUnregisterNetworkFactory((Messenger)msg.obj); 2293 break; 2294 } 2295 case EVENT_REGISTER_NETWORK_AGENT: { 2296 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2297 break; 2298 } 2299 case EVENT_REGISTER_NETWORK_REQUEST: 2300 case EVENT_REGISTER_NETWORK_LISTENER: { 2301 handleRegisterNetworkRequest(msg); 2302 break; 2303 } 2304 case EVENT_RELEASE_NETWORK_REQUEST: { 2305 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2306 break; 2307 } 2308 case EVENT_SYSTEM_READY: { 2309 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2310 nai.networkMonitor.systemReady = true; 2311 } 2312 break; 2313 } 2314 } 2315 } 2316 } 2317 2318 // javadoc from interface 2319 public int tether(String iface) { 2320 ConnectivityManager.enforceTetherChangePermission(mContext); 2321 if (isTetheringSupported()) { 2322 return mTethering.tether(iface); 2323 } else { 2324 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2325 } 2326 } 2327 2328 // javadoc from interface 2329 public int untether(String iface) { 2330 ConnectivityManager.enforceTetherChangePermission(mContext); 2331 2332 if (isTetheringSupported()) { 2333 return mTethering.untether(iface); 2334 } else { 2335 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2336 } 2337 } 2338 2339 // javadoc from interface 2340 public int getLastTetherError(String iface) { 2341 enforceTetherAccessPermission(); 2342 2343 if (isTetheringSupported()) { 2344 return mTethering.getLastTetherError(iface); 2345 } else { 2346 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2347 } 2348 } 2349 2350 // TODO - proper iface API for selection by property, inspection, etc 2351 public String[] getTetherableUsbRegexs() { 2352 enforceTetherAccessPermission(); 2353 if (isTetheringSupported()) { 2354 return mTethering.getTetherableUsbRegexs(); 2355 } else { 2356 return new String[0]; 2357 } 2358 } 2359 2360 public String[] getTetherableWifiRegexs() { 2361 enforceTetherAccessPermission(); 2362 if (isTetheringSupported()) { 2363 return mTethering.getTetherableWifiRegexs(); 2364 } else { 2365 return new String[0]; 2366 } 2367 } 2368 2369 public String[] getTetherableBluetoothRegexs() { 2370 enforceTetherAccessPermission(); 2371 if (isTetheringSupported()) { 2372 return mTethering.getTetherableBluetoothRegexs(); 2373 } else { 2374 return new String[0]; 2375 } 2376 } 2377 2378 public int setUsbTethering(boolean enable) { 2379 ConnectivityManager.enforceTetherChangePermission(mContext); 2380 if (isTetheringSupported()) { 2381 return mTethering.setUsbTethering(enable); 2382 } else { 2383 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2384 } 2385 } 2386 2387 // TODO - move iface listing, queries, etc to new module 2388 // javadoc from interface 2389 public String[] getTetherableIfaces() { 2390 enforceTetherAccessPermission(); 2391 return mTethering.getTetherableIfaces(); 2392 } 2393 2394 public String[] getTetheredIfaces() { 2395 enforceTetherAccessPermission(); 2396 return mTethering.getTetheredIfaces(); 2397 } 2398 2399 public String[] getTetheringErroredIfaces() { 2400 enforceTetherAccessPermission(); 2401 return mTethering.getErroredIfaces(); 2402 } 2403 2404 public String[] getTetheredDhcpRanges() { 2405 enforceConnectivityInternalPermission(); 2406 return mTethering.getTetheredDhcpRanges(); 2407 } 2408 2409 // if ro.tether.denied = true we default to no tethering 2410 // gservices could set the secure setting to 1 though to enable it on a build where it 2411 // had previously been turned off. 2412 public boolean isTetheringSupported() { 2413 enforceTetherAccessPermission(); 2414 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2415 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2416 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2417 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2418 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 2419 mTethering.getTetherableWifiRegexs().length != 0 || 2420 mTethering.getTetherableBluetoothRegexs().length != 0) && 2421 mTethering.getUpstreamIfaceTypes().length != 0); 2422 } 2423 2424 // Called when we lose the default network and have no replacement yet. 2425 // This will automatically be cleared after X seconds or a new default network 2426 // becomes CONNECTED, whichever happens first. The timer is started by the 2427 // first caller and not restarted by subsequent callers. 2428 private void requestNetworkTransitionWakelock(String forWhom) { 2429 int serialNum = 0; 2430 synchronized (this) { 2431 if (mNetTransitionWakeLock.isHeld()) return; 2432 serialNum = ++mNetTransitionWakeLockSerialNumber; 2433 mNetTransitionWakeLock.acquire(); 2434 mNetTransitionWakeLockCausedBy = forWhom; 2435 } 2436 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2437 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2438 mNetTransitionWakeLockTimeout); 2439 return; 2440 } 2441 2442 // 100 percent is full good, 0 is full bad. 2443 public void reportInetCondition(int networkType, int percentage) { 2444 if (percentage > 50) return; // don't handle good network reports 2445 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2446 if (nai != null) reportBadNetwork(nai.network); 2447 } 2448 2449 public void reportBadNetwork(Network network) { 2450 enforceAccessPermission(); 2451 enforceInternetPermission(); 2452 2453 if (network == null) return; 2454 2455 final int uid = Binder.getCallingUid(); 2456 NetworkAgentInfo nai = null; 2457 synchronized (mNetworkForNetId) { 2458 nai = mNetworkForNetId.get(network.netId); 2459 } 2460 if (nai == null) return; 2461 if (DBG) log("reportBadNetwork(" + nai.name() + ") by " + uid); 2462 synchronized (nai) { 2463 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2464 // which isn't meant to work on uncreated networks. 2465 if (!nai.created) return; 2466 2467 if (isNetworkBlocked(nai, uid)) return; 2468 2469 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2470 } 2471 } 2472 2473 public ProxyInfo getProxy() { 2474 // this information is already available as a world read/writable jvm property 2475 // so this API change wouldn't have a benifit. It also breaks the passing 2476 // of proxy info to all the JVMs. 2477 // enforceAccessPermission(); 2478 synchronized (mProxyLock) { 2479 ProxyInfo ret = mGlobalProxy; 2480 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2481 return ret; 2482 } 2483 } 2484 2485 public void setGlobalProxy(ProxyInfo proxyProperties) { 2486 enforceConnectivityInternalPermission(); 2487 2488 synchronized (mProxyLock) { 2489 if (proxyProperties == mGlobalProxy) return; 2490 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2491 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2492 2493 String host = ""; 2494 int port = 0; 2495 String exclList = ""; 2496 String pacFileUrl = ""; 2497 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2498 (proxyProperties.getPacFileUrl() != null))) { 2499 if (!proxyProperties.isValid()) { 2500 if (DBG) 2501 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2502 return; 2503 } 2504 mGlobalProxy = new ProxyInfo(proxyProperties); 2505 host = mGlobalProxy.getHost(); 2506 port = mGlobalProxy.getPort(); 2507 exclList = mGlobalProxy.getExclusionListAsString(); 2508 if (proxyProperties.getPacFileUrl() != null) { 2509 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2510 } 2511 } else { 2512 mGlobalProxy = null; 2513 } 2514 ContentResolver res = mContext.getContentResolver(); 2515 final long token = Binder.clearCallingIdentity(); 2516 try { 2517 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2518 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2519 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2520 exclList); 2521 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2522 } finally { 2523 Binder.restoreCallingIdentity(token); 2524 } 2525 2526 if (mGlobalProxy == null) { 2527 proxyProperties = mDefaultProxy; 2528 } 2529 sendProxyBroadcast(proxyProperties); 2530 } 2531 } 2532 2533 private void loadGlobalProxy() { 2534 ContentResolver res = mContext.getContentResolver(); 2535 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2536 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2537 String exclList = Settings.Global.getString(res, 2538 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2539 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2540 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2541 ProxyInfo proxyProperties; 2542 if (!TextUtils.isEmpty(pacFileUrl)) { 2543 proxyProperties = new ProxyInfo(pacFileUrl); 2544 } else { 2545 proxyProperties = new ProxyInfo(host, port, exclList); 2546 } 2547 if (!proxyProperties.isValid()) { 2548 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2549 return; 2550 } 2551 2552 synchronized (mProxyLock) { 2553 mGlobalProxy = proxyProperties; 2554 } 2555 } 2556 } 2557 2558 public ProxyInfo getGlobalProxy() { 2559 // this information is already available as a world read/writable jvm property 2560 // so this API change wouldn't have a benifit. It also breaks the passing 2561 // of proxy info to all the JVMs. 2562 // enforceAccessPermission(); 2563 synchronized (mProxyLock) { 2564 return mGlobalProxy; 2565 } 2566 } 2567 2568 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2569 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2570 && (proxy.getPacFileUrl() == null)) { 2571 proxy = null; 2572 } 2573 synchronized (mProxyLock) { 2574 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2575 if (mDefaultProxy == proxy) return; // catches repeated nulls 2576 if (proxy != null && !proxy.isValid()) { 2577 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2578 return; 2579 } 2580 2581 // This call could be coming from the PacManager, containing the port of the local 2582 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2583 // global (to get the correct local port), and send a broadcast. 2584 // TODO: Switch PacManager to have its own message to send back rather than 2585 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2586 if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null) 2587 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2588 mGlobalProxy = proxy; 2589 sendProxyBroadcast(mGlobalProxy); 2590 return; 2591 } 2592 mDefaultProxy = proxy; 2593 2594 if (mGlobalProxy != null) return; 2595 if (!mDefaultProxyDisabled) { 2596 sendProxyBroadcast(proxy); 2597 } 2598 } 2599 } 2600 2601 private void handleDeprecatedGlobalHttpProxy() { 2602 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2603 Settings.Global.HTTP_PROXY); 2604 if (!TextUtils.isEmpty(proxy)) { 2605 String data[] = proxy.split(":"); 2606 if (data.length == 0) { 2607 return; 2608 } 2609 2610 String proxyHost = data[0]; 2611 int proxyPort = 8080; 2612 if (data.length > 1) { 2613 try { 2614 proxyPort = Integer.parseInt(data[1]); 2615 } catch (NumberFormatException e) { 2616 return; 2617 } 2618 } 2619 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2620 setGlobalProxy(p); 2621 } 2622 } 2623 2624 private void sendProxyBroadcast(ProxyInfo proxy) { 2625 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2626 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2627 if (DBG) log("sending Proxy Broadcast for " + proxy); 2628 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2629 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2630 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2631 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2632 final long ident = Binder.clearCallingIdentity(); 2633 try { 2634 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2635 } finally { 2636 Binder.restoreCallingIdentity(ident); 2637 } 2638 } 2639 2640 private static class SettingsObserver extends ContentObserver { 2641 private int mWhat; 2642 private Handler mHandler; 2643 SettingsObserver(Handler handler, int what) { 2644 super(handler); 2645 mHandler = handler; 2646 mWhat = what; 2647 } 2648 2649 void observe(Context context) { 2650 ContentResolver resolver = context.getContentResolver(); 2651 resolver.registerContentObserver(Settings.Global.getUriFor( 2652 Settings.Global.HTTP_PROXY), false, this); 2653 } 2654 2655 @Override 2656 public void onChange(boolean selfChange) { 2657 mHandler.obtainMessage(mWhat).sendToTarget(); 2658 } 2659 } 2660 2661 private static void log(String s) { 2662 Slog.d(TAG, s); 2663 } 2664 2665 private static void loge(String s) { 2666 Slog.e(TAG, s); 2667 } 2668 2669 int convertFeatureToNetworkType(int networkType, String feature) { 2670 int usedNetworkType = networkType; 2671 2672 if(networkType == ConnectivityManager.TYPE_MOBILE) { 2673 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 2674 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 2675 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 2676 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 2677 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 2678 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 2679 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 2680 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 2681 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 2682 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 2683 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 2684 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 2685 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 2686 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 2687 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 2688 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_EMERGENCY)) { 2689 usedNetworkType = ConnectivityManager.TYPE_MOBILE_EMERGENCY; 2690 } else { 2691 Slog.e(TAG, "Can't match any mobile netTracker!"); 2692 } 2693 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 2694 if (TextUtils.equals(feature, "p2p")) { 2695 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 2696 } else { 2697 Slog.e(TAG, "Can't match any wifi netTracker!"); 2698 } 2699 } else { 2700 Slog.e(TAG, "Unexpected network type"); 2701 } 2702 return usedNetworkType; 2703 } 2704 2705 private static <T> T checkNotNull(T value, String message) { 2706 if (value == null) { 2707 throw new NullPointerException(message); 2708 } 2709 return value; 2710 } 2711 2712 /** 2713 * Prepare for a VPN application. This method is used by VpnDialogs 2714 * and not available in ConnectivityManager. Permissions are checked 2715 * in Vpn class. 2716 * @hide 2717 */ 2718 @Override 2719 public boolean prepareVpn(String oldPackage, String newPackage) { 2720 throwIfLockdownEnabled(); 2721 int user = UserHandle.getUserId(Binder.getCallingUid()); 2722 synchronized(mVpns) { 2723 return mVpns.get(user).prepare(oldPackage, newPackage); 2724 } 2725 } 2726 2727 /** 2728 * Set whether the current VPN package has the ability to launch VPNs without 2729 * user intervention. This method is used by system UIs and not available 2730 * in ConnectivityManager. Permissions are checked in Vpn class. 2731 * @hide 2732 */ 2733 @Override 2734 public void setVpnPackageAuthorization(boolean authorized) { 2735 int user = UserHandle.getUserId(Binder.getCallingUid()); 2736 synchronized(mVpns) { 2737 mVpns.get(user).setPackageAuthorization(authorized); 2738 } 2739 } 2740 2741 /** 2742 * Configure a TUN interface and return its file descriptor. Parameters 2743 * are encoded and opaque to this class. This method is used by VpnBuilder 2744 * and not available in ConnectivityManager. Permissions are checked in 2745 * Vpn class. 2746 * @hide 2747 */ 2748 @Override 2749 public ParcelFileDescriptor establishVpn(VpnConfig config) { 2750 throwIfLockdownEnabled(); 2751 int user = UserHandle.getUserId(Binder.getCallingUid()); 2752 synchronized(mVpns) { 2753 return mVpns.get(user).establish(config); 2754 } 2755 } 2756 2757 /** 2758 * Start legacy VPN, controlling native daemons as needed. Creates a 2759 * secondary thread to perform connection work, returning quickly. 2760 */ 2761 @Override 2762 public void startLegacyVpn(VpnProfile profile) { 2763 throwIfLockdownEnabled(); 2764 final LinkProperties egress = getActiveLinkProperties(); 2765 if (egress == null) { 2766 throw new IllegalStateException("Missing active network connection"); 2767 } 2768 int user = UserHandle.getUserId(Binder.getCallingUid()); 2769 synchronized(mVpns) { 2770 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 2771 } 2772 } 2773 2774 /** 2775 * Return the information of the ongoing legacy VPN. This method is used 2776 * by VpnSettings and not available in ConnectivityManager. Permissions 2777 * are checked in Vpn class. 2778 * @hide 2779 */ 2780 @Override 2781 public LegacyVpnInfo getLegacyVpnInfo() { 2782 throwIfLockdownEnabled(); 2783 int user = UserHandle.getUserId(Binder.getCallingUid()); 2784 synchronized(mVpns) { 2785 return mVpns.get(user).getLegacyVpnInfo(); 2786 } 2787 } 2788 2789 /** 2790 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 2791 * not available in ConnectivityManager. 2792 * Permissions are checked in Vpn class. 2793 * @hide 2794 */ 2795 @Override 2796 public VpnConfig getVpnConfig() { 2797 int user = UserHandle.getUserId(Binder.getCallingUid()); 2798 synchronized(mVpns) { 2799 return mVpns.get(user).getVpnConfig(); 2800 } 2801 } 2802 2803 @Override 2804 public boolean updateLockdownVpn() { 2805 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 2806 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 2807 return false; 2808 } 2809 2810 // Tear down existing lockdown if profile was removed 2811 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 2812 if (mLockdownEnabled) { 2813 if (!mKeyStore.isUnlocked()) { 2814 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 2815 return false; 2816 } 2817 2818 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 2819 final VpnProfile profile = VpnProfile.decode( 2820 profileName, mKeyStore.get(Credentials.VPN + profileName)); 2821 int user = UserHandle.getUserId(Binder.getCallingUid()); 2822 synchronized(mVpns) { 2823 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 2824 profile)); 2825 } 2826 } else { 2827 setLockdownTracker(null); 2828 } 2829 2830 return true; 2831 } 2832 2833 /** 2834 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 2835 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 2836 */ 2837 private void setLockdownTracker(LockdownVpnTracker tracker) { 2838 // Shutdown any existing tracker 2839 final LockdownVpnTracker existing = mLockdownTracker; 2840 mLockdownTracker = null; 2841 if (existing != null) { 2842 existing.shutdown(); 2843 } 2844 2845 try { 2846 if (tracker != null) { 2847 mNetd.setFirewallEnabled(true); 2848 mNetd.setFirewallInterfaceRule("lo", true); 2849 mLockdownTracker = tracker; 2850 mLockdownTracker.init(); 2851 } else { 2852 mNetd.setFirewallEnabled(false); 2853 } 2854 } catch (RemoteException e) { 2855 // ignored; NMS lives inside system_server 2856 } 2857 } 2858 2859 private void throwIfLockdownEnabled() { 2860 if (mLockdownEnabled) { 2861 throw new IllegalStateException("Unavailable in lockdown mode"); 2862 } 2863 } 2864 2865 public void supplyMessenger(int networkType, Messenger messenger) { 2866 enforceConnectivityInternalPermission(); 2867 2868 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 2869 mNetTrackers[networkType].supplyMessenger(messenger); 2870 } 2871 } 2872 2873 public int findConnectionTypeForIface(String iface) { 2874 enforceConnectivityInternalPermission(); 2875 2876 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 2877 2878 synchronized(mNetworkForNetId) { 2879 for (int i = 0; i < mNetworkForNetId.size(); i++) { 2880 NetworkAgentInfo nai = mNetworkForNetId.valueAt(i); 2881 LinkProperties lp = nai.linkProperties; 2882 if (lp != null && iface.equals(lp.getInterfaceName()) && nai.networkInfo != null) { 2883 return nai.networkInfo.getType(); 2884 } 2885 } 2886 } 2887 return ConnectivityManager.TYPE_NONE; 2888 } 2889 2890 /** 2891 * Have mobile data fail fast if enabled. 2892 * 2893 * @param enabled DctConstants.ENABLED/DISABLED 2894 */ 2895 private void setEnableFailFastMobileData(int enabled) { 2896 int tag; 2897 2898 if (enabled == DctConstants.ENABLED) { 2899 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 2900 } else { 2901 tag = mEnableFailFastMobileDataTag.get(); 2902 } 2903 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 2904 enabled)); 2905 } 2906 2907 @Override 2908 public int checkMobileProvisioning(int suggestedTimeOutMs) { 2909 // TODO: Remove? Any reason to trigger a provisioning check? 2910 return -1; 2911 } 2912 2913 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 2914 private volatile boolean mIsNotificationVisible = false; 2915 2916 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 2917 if (DBG) { 2918 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 2919 + " action=" + action); 2920 } 2921 Intent intent = new Intent(action); 2922 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 2923 // Concatenate the range of types onto the range of NetIDs. 2924 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 2925 setProvNotificationVisibleIntent(visible, id, networkType, null, pendingIntent); 2926 } 2927 2928 /** 2929 * Show or hide network provisioning notificaitons. 2930 * 2931 * @param id an identifier that uniquely identifies this notification. This must match 2932 * between show and hide calls. We use the NetID value but for legacy callers 2933 * we concatenate the range of types with the range of NetIDs. 2934 */ 2935 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 2936 String extraInfo, PendingIntent intent) { 2937 if (DBG) { 2938 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 2939 networkType + " extraInfo=" + extraInfo); 2940 } 2941 2942 Resources r = Resources.getSystem(); 2943 NotificationManager notificationManager = (NotificationManager) mContext 2944 .getSystemService(Context.NOTIFICATION_SERVICE); 2945 2946 if (visible) { 2947 CharSequence title; 2948 CharSequence details; 2949 int icon; 2950 Notification notification = new Notification(); 2951 switch (networkType) { 2952 case ConnectivityManager.TYPE_WIFI: 2953 title = r.getString(R.string.wifi_available_sign_in, 0); 2954 details = r.getString(R.string.network_available_sign_in_detailed, 2955 extraInfo); 2956 icon = R.drawable.stat_notify_wifi_in_range; 2957 break; 2958 case ConnectivityManager.TYPE_MOBILE: 2959 case ConnectivityManager.TYPE_MOBILE_HIPRI: 2960 title = r.getString(R.string.network_available_sign_in, 0); 2961 // TODO: Change this to pull from NetworkInfo once a printable 2962 // name has been added to it 2963 details = mTelephonyManager.getNetworkOperatorName(); 2964 icon = R.drawable.stat_notify_rssi_in_range; 2965 break; 2966 default: 2967 title = r.getString(R.string.network_available_sign_in, 0); 2968 details = r.getString(R.string.network_available_sign_in_detailed, 2969 extraInfo); 2970 icon = R.drawable.stat_notify_rssi_in_range; 2971 break; 2972 } 2973 2974 notification.when = 0; 2975 notification.icon = icon; 2976 notification.flags = Notification.FLAG_AUTO_CANCEL; 2977 notification.tickerText = title; 2978 notification.color = mContext.getResources().getColor( 2979 com.android.internal.R.color.system_notification_accent_color); 2980 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 2981 notification.contentIntent = intent; 2982 2983 try { 2984 notificationManager.notify(NOTIFICATION_ID, id, notification); 2985 } catch (NullPointerException npe) { 2986 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 2987 npe.printStackTrace(); 2988 } 2989 } else { 2990 try { 2991 notificationManager.cancel(NOTIFICATION_ID, id); 2992 } catch (NullPointerException npe) { 2993 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 2994 npe.printStackTrace(); 2995 } 2996 } 2997 mIsNotificationVisible = visible; 2998 } 2999 3000 /** Location to an updatable file listing carrier provisioning urls. 3001 * An example: 3002 * 3003 * <?xml version="1.0" encoding="utf-8"?> 3004 * <provisioningUrls> 3005 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3006 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 3007 * </provisioningUrls> 3008 */ 3009 private static final String PROVISIONING_URL_PATH = 3010 "/data/misc/radio/provisioning_urls.xml"; 3011 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3012 3013 /** XML tag for root element. */ 3014 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3015 /** XML tag for individual url */ 3016 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3017 /** XML tag for redirected url */ 3018 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 3019 /** XML attribute for mcc */ 3020 private static final String ATTR_MCC = "mcc"; 3021 /** XML attribute for mnc */ 3022 private static final String ATTR_MNC = "mnc"; 3023 3024 private static final int REDIRECTED_PROVISIONING = 1; 3025 private static final int PROVISIONING = 2; 3026 3027 private String getProvisioningUrlBaseFromFile(int type) { 3028 FileReader fileReader = null; 3029 XmlPullParser parser = null; 3030 Configuration config = mContext.getResources().getConfiguration(); 3031 String tagType; 3032 3033 switch (type) { 3034 case PROVISIONING: 3035 tagType = TAG_PROVISIONING_URL; 3036 break; 3037 case REDIRECTED_PROVISIONING: 3038 tagType = TAG_REDIRECTED_URL; 3039 break; 3040 default: 3041 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 3042 type); 3043 } 3044 3045 try { 3046 fileReader = new FileReader(mProvisioningUrlFile); 3047 parser = Xml.newPullParser(); 3048 parser.setInput(fileReader); 3049 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3050 3051 while (true) { 3052 XmlUtils.nextElement(parser); 3053 3054 String element = parser.getName(); 3055 if (element == null) break; 3056 3057 if (element.equals(tagType)) { 3058 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3059 try { 3060 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3061 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3062 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3063 parser.next(); 3064 if (parser.getEventType() == XmlPullParser.TEXT) { 3065 return parser.getText(); 3066 } 3067 } 3068 } 3069 } catch (NumberFormatException e) { 3070 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3071 } 3072 } 3073 } 3074 return null; 3075 } catch (FileNotFoundException e) { 3076 loge("Carrier Provisioning Urls file not found"); 3077 } catch (XmlPullParserException e) { 3078 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3079 } catch (IOException e) { 3080 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3081 } finally { 3082 if (fileReader != null) { 3083 try { 3084 fileReader.close(); 3085 } catch (IOException e) {} 3086 } 3087 } 3088 return null; 3089 } 3090 3091 @Override 3092 public String getMobileRedirectedProvisioningUrl() { 3093 enforceConnectivityInternalPermission(); 3094 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 3095 if (TextUtils.isEmpty(url)) { 3096 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 3097 } 3098 return url; 3099 } 3100 3101 @Override 3102 public String getMobileProvisioningUrl() { 3103 enforceConnectivityInternalPermission(); 3104 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 3105 if (TextUtils.isEmpty(url)) { 3106 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3107 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3108 } else { 3109 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3110 } 3111 // populate the iccid, imei and phone number in the provisioning url. 3112 if (!TextUtils.isEmpty(url)) { 3113 String phoneNumber = mTelephonyManager.getLine1Number(); 3114 if (TextUtils.isEmpty(phoneNumber)) { 3115 phoneNumber = "0000000000"; 3116 } 3117 url = String.format(url, 3118 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3119 mTelephonyManager.getDeviceId() /* IMEI */, 3120 phoneNumber /* Phone numer */); 3121 } 3122 3123 return url; 3124 } 3125 3126 @Override 3127 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3128 String action) { 3129 enforceConnectivityInternalPermission(); 3130 final long ident = Binder.clearCallingIdentity(); 3131 try { 3132 setProvNotificationVisible(visible, networkType, action); 3133 } finally { 3134 Binder.restoreCallingIdentity(ident); 3135 } 3136 } 3137 3138 @Override 3139 public void setAirplaneMode(boolean enable) { 3140 enforceConnectivityInternalPermission(); 3141 final long ident = Binder.clearCallingIdentity(); 3142 try { 3143 final ContentResolver cr = mContext.getContentResolver(); 3144 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3145 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3146 intent.putExtra("state", enable); 3147 mContext.sendBroadcast(intent); 3148 } finally { 3149 Binder.restoreCallingIdentity(ident); 3150 } 3151 } 3152 3153 private void onUserStart(int userId) { 3154 synchronized(mVpns) { 3155 Vpn userVpn = mVpns.get(userId); 3156 if (userVpn != null) { 3157 loge("Starting user already has a VPN"); 3158 return; 3159 } 3160 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, this, userId); 3161 mVpns.put(userId, userVpn); 3162 } 3163 } 3164 3165 private void onUserStop(int userId) { 3166 synchronized(mVpns) { 3167 Vpn userVpn = mVpns.get(userId); 3168 if (userVpn == null) { 3169 loge("Stopping user has no VPN"); 3170 return; 3171 } 3172 mVpns.delete(userId); 3173 } 3174 } 3175 3176 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3177 @Override 3178 public void onReceive(Context context, Intent intent) { 3179 final String action = intent.getAction(); 3180 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3181 if (userId == UserHandle.USER_NULL) return; 3182 3183 if (Intent.ACTION_USER_STARTING.equals(action)) { 3184 onUserStart(userId); 3185 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3186 onUserStop(userId); 3187 } 3188 } 3189 }; 3190 3191 @Override 3192 public LinkQualityInfo getLinkQualityInfo(int networkType) { 3193 enforceAccessPermission(); 3194 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 3195 return mNetTrackers[networkType].getLinkQualityInfo(); 3196 } else { 3197 return null; 3198 } 3199 } 3200 3201 @Override 3202 public LinkQualityInfo getActiveLinkQualityInfo() { 3203 enforceAccessPermission(); 3204 if (isNetworkTypeValid(mActiveDefaultNetwork) && 3205 mNetTrackers[mActiveDefaultNetwork] != null) { 3206 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 3207 } else { 3208 return null; 3209 } 3210 } 3211 3212 @Override 3213 public LinkQualityInfo[] getAllLinkQualityInfo() { 3214 enforceAccessPermission(); 3215 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 3216 for (NetworkStateTracker tracker : mNetTrackers) { 3217 if (tracker != null) { 3218 LinkQualityInfo li = tracker.getLinkQualityInfo(); 3219 if (li != null) { 3220 result.add(li); 3221 } 3222 } 3223 } 3224 3225 return result.toArray(new LinkQualityInfo[result.size()]); 3226 } 3227 3228 /* Infrastructure for network sampling */ 3229 3230 private void handleNetworkSamplingTimeout() { 3231 3232 if (SAMPLE_DBG) log("Sampling interval elapsed, updating statistics .."); 3233 3234 // initialize list of interfaces .. 3235 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 3236 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 3237 for (NetworkStateTracker tracker : mNetTrackers) { 3238 if (tracker != null) { 3239 String ifaceName = tracker.getNetworkInterfaceName(); 3240 if (ifaceName != null) { 3241 mapIfaceToSample.put(ifaceName, null); 3242 } 3243 } 3244 } 3245 3246 // Read samples for all interfaces 3247 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 3248 3249 // process samples for all networks 3250 for (NetworkStateTracker tracker : mNetTrackers) { 3251 if (tracker != null) { 3252 String ifaceName = tracker.getNetworkInterfaceName(); 3253 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 3254 if (ss != null) { 3255 // end the previous sampling cycle 3256 tracker.stopSampling(ss); 3257 // start a new sampling cycle .. 3258 tracker.startSampling(ss); 3259 } 3260 } 3261 } 3262 3263 if (SAMPLE_DBG) log("Done."); 3264 3265 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 3266 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 3267 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 3268 3269 if (SAMPLE_DBG) { 3270 log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 3271 } 3272 3273 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 3274 } 3275 3276 /** 3277 * Sets a network sampling alarm. 3278 */ 3279 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 3280 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 3281 int alarmType; 3282 if (Resources.getSystem().getBoolean( 3283 R.bool.config_networkSamplingWakesDevice)) { 3284 alarmType = AlarmManager.ELAPSED_REALTIME_WAKEUP; 3285 } else { 3286 alarmType = AlarmManager.ELAPSED_REALTIME; 3287 } 3288 mAlarmManager.set(alarmType, wakeupTime, intent); 3289 } 3290 3291 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3292 new HashMap<Messenger, NetworkFactoryInfo>(); 3293 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3294 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3295 3296 private static class NetworkFactoryInfo { 3297 public final String name; 3298 public final Messenger messenger; 3299 public final AsyncChannel asyncChannel; 3300 3301 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3302 this.name = name; 3303 this.messenger = messenger; 3304 this.asyncChannel = asyncChannel; 3305 } 3306 } 3307 3308 /** 3309 * Tracks info about the requester. 3310 * Also used to notice when the calling process dies so we can self-expire 3311 */ 3312 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3313 static final boolean REQUEST = true; 3314 static final boolean LISTEN = false; 3315 3316 final NetworkRequest request; 3317 IBinder mBinder; 3318 final int mPid; 3319 final int mUid; 3320 final Messenger messenger; 3321 final boolean isRequest; 3322 3323 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 3324 super(); 3325 messenger = m; 3326 request = r; 3327 mBinder = binder; 3328 mPid = getCallingPid(); 3329 mUid = getCallingUid(); 3330 this.isRequest = isRequest; 3331 3332 try { 3333 mBinder.linkToDeath(this, 0); 3334 } catch (RemoteException e) { 3335 binderDied(); 3336 } 3337 } 3338 3339 void unlinkDeathRecipient() { 3340 mBinder.unlinkToDeath(this, 0); 3341 } 3342 3343 public void binderDied() { 3344 log("ConnectivityService NetworkRequestInfo binderDied(" + 3345 request + ", " + mBinder + ")"); 3346 releaseNetworkRequest(request); 3347 } 3348 3349 public String toString() { 3350 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 3351 mPid + " for " + request; 3352 } 3353 } 3354 3355 @Override 3356 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3357 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3358 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 3359 == false) { 3360 enforceConnectivityInternalPermission(); 3361 } else { 3362 enforceChangePermission(); 3363 } 3364 3365 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3366 3367 // if UID is restricted, don't allow them to bring up metered APNs 3368 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED) 3369 == false) { 3370 final int uidRules; 3371 final int uid = Binder.getCallingUid(); 3372 synchronized(mRulesLock) { 3373 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3374 } 3375 if ((uidRules & RULE_REJECT_METERED) != 0) { 3376 // we could silently fail or we can filter the available nets to only give 3377 // them those they have access to. Chose the more useful 3378 networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED); 3379 } 3380 } 3381 3382 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3383 throw new IllegalArgumentException("Bad timeout specified"); 3384 } 3385 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3386 nextNetworkRequestId()); 3387 if (DBG) log("requestNetwork for " + networkRequest); 3388 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3389 NetworkRequestInfo.REQUEST); 3390 3391 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3392 if (timeoutMs > 0) { 3393 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3394 nri), timeoutMs); 3395 } 3396 return networkRequest; 3397 } 3398 3399 @Override 3400 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3401 PendingIntent operation) { 3402 // TODO 3403 return null; 3404 } 3405 3406 @Override 3407 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3408 Messenger messenger, IBinder binder) { 3409 enforceAccessPermission(); 3410 3411 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 3412 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3413 if (DBG) log("listenForNetwork for " + networkRequest); 3414 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3415 NetworkRequestInfo.LISTEN); 3416 3417 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3418 return networkRequest; 3419 } 3420 3421 @Override 3422 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3423 PendingIntent operation) { 3424 } 3425 3426 @Override 3427 public void releaseNetworkRequest(NetworkRequest networkRequest) { 3428 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 3429 0, networkRequest)); 3430 } 3431 3432 @Override 3433 public void registerNetworkFactory(Messenger messenger, String name) { 3434 enforceConnectivityInternalPermission(); 3435 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 3436 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 3437 } 3438 3439 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 3440 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 3441 mNetworkFactoryInfos.put(nfi.messenger, nfi); 3442 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 3443 } 3444 3445 @Override 3446 public void unregisterNetworkFactory(Messenger messenger) { 3447 enforceConnectivityInternalPermission(); 3448 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 3449 } 3450 3451 private void handleUnregisterNetworkFactory(Messenger messenger) { 3452 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 3453 if (nfi == null) { 3454 loge("Failed to find Messenger in unregisterNetworkFactory"); 3455 return; 3456 } 3457 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 3458 } 3459 3460 /** 3461 * NetworkAgentInfo supporting a request by requestId. 3462 * These have already been vetted (their Capabilities satisfy the request) 3463 * and the are the highest scored network available. 3464 * the are keyed off the Requests requestId. 3465 */ 3466 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 3467 new SparseArray<NetworkAgentInfo>(); 3468 3469 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 3470 new SparseArray<NetworkAgentInfo>(); 3471 3472 // NetworkAgentInfo keyed off its connecting messenger 3473 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 3474 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 3475 new HashMap<Messenger, NetworkAgentInfo>(); 3476 3477 private final NetworkRequest mDefaultRequest; 3478 3479 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 3480 return mNetworkForRequestId.get(mDefaultRequest.requestId) == nai; 3481 } 3482 3483 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 3484 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 3485 int currentScore, NetworkMisc networkMisc) { 3486 enforceConnectivityInternalPermission(); 3487 3488 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 3489 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 3490 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler, 3491 new NetworkMisc(networkMisc)); 3492 synchronized (this) { 3493 nai.networkMonitor.systemReady = mSystemReady; 3494 } 3495 if (DBG) log("registerNetworkAgent " + nai); 3496 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 3497 } 3498 3499 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 3500 if (VDBG) log("Got NetworkAgent Messenger"); 3501 mNetworkAgentInfos.put(na.messenger, na); 3502 assignNextNetId(na); 3503 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 3504 NetworkInfo networkInfo = na.networkInfo; 3505 na.networkInfo = null; 3506 updateNetworkInfo(na, networkInfo); 3507 } 3508 3509 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 3510 LinkProperties newLp = networkAgent.linkProperties; 3511 int netId = networkAgent.network.netId; 3512 3513 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 3514 // we do anything else, make sure its LinkProperties are accurate. 3515 if (networkAgent.clatd != null) { 3516 networkAgent.clatd.fixupLinkProperties(oldLp); 3517 } 3518 3519 updateInterfaces(newLp, oldLp, netId); 3520 updateMtu(newLp, oldLp); 3521 // TODO - figure out what to do for clat 3522// for (LinkProperties lp : newLp.getStackedLinks()) { 3523// updateMtu(lp, null); 3524// } 3525 updateTcpBufferSizes(networkAgent); 3526 final boolean flushDns = updateRoutes(newLp, oldLp, netId); 3527 updateDnses(newLp, oldLp, netId, flushDns); 3528 updateClat(newLp, oldLp, networkAgent); 3529 if (isDefaultNetwork(networkAgent)) handleApplyDefaultProxy(newLp.getHttpProxy()); 3530 // TODO - move this check to cover the whole function 3531 if (!Objects.equals(newLp, oldLp)) { 3532 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 3533 } 3534 } 3535 3536 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 3537 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 3538 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 3539 3540 if (!wasRunningClat && shouldRunClat) { 3541 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 3542 nai.clatd.start(); 3543 } else if (wasRunningClat && !shouldRunClat) { 3544 nai.clatd.stop(); 3545 } 3546 } 3547 3548 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 3549 CompareResult<String> interfaceDiff = new CompareResult<String>(); 3550 if (oldLp != null) { 3551 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 3552 } else if (newLp != null) { 3553 interfaceDiff.added = newLp.getAllInterfaceNames(); 3554 } 3555 for (String iface : interfaceDiff.added) { 3556 try { 3557 if (DBG) log("Adding iface " + iface + " to network " + netId); 3558 mNetd.addInterfaceToNetwork(iface, netId); 3559 } catch (Exception e) { 3560 loge("Exception adding interface: " + e); 3561 } 3562 } 3563 for (String iface : interfaceDiff.removed) { 3564 try { 3565 if (DBG) log("Removing iface " + iface + " from network " + netId); 3566 mNetd.removeInterfaceFromNetwork(iface, netId); 3567 } catch (Exception e) { 3568 loge("Exception removing interface: " + e); 3569 } 3570 } 3571 } 3572 3573 /** 3574 * Have netd update routes from oldLp to newLp. 3575 * @return true if routes changed between oldLp and newLp 3576 */ 3577 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 3578 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 3579 if (oldLp != null) { 3580 routeDiff = oldLp.compareAllRoutes(newLp); 3581 } else if (newLp != null) { 3582 routeDiff.added = newLp.getAllRoutes(); 3583 } 3584 3585 // add routes before removing old in case it helps with continuous connectivity 3586 3587 // do this twice, adding non-nexthop routes first, then routes they are dependent on 3588 for (RouteInfo route : routeDiff.added) { 3589 if (route.hasGateway()) continue; 3590 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3591 try { 3592 mNetd.addRoute(netId, route); 3593 } catch (Exception e) { 3594 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 3595 loge("Exception in addRoute for non-gateway: " + e); 3596 } 3597 } 3598 } 3599 for (RouteInfo route : routeDiff.added) { 3600 if (route.hasGateway() == false) continue; 3601 if (DBG) log("Adding Route [" + route + "] to network " + netId); 3602 try { 3603 mNetd.addRoute(netId, route); 3604 } catch (Exception e) { 3605 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 3606 loge("Exception in addRoute for gateway: " + e); 3607 } 3608 } 3609 } 3610 3611 for (RouteInfo route : routeDiff.removed) { 3612 if (DBG) log("Removing Route [" + route + "] from network " + netId); 3613 try { 3614 mNetd.removeRoute(netId, route); 3615 } catch (Exception e) { 3616 loge("Exception in removeRoute: " + e); 3617 } 3618 } 3619 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 3620 } 3621 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, boolean flush) { 3622 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 3623 Collection<InetAddress> dnses = newLp.getDnsServers(); 3624 if (dnses.size() == 0 && mDefaultDns != null) { 3625 dnses = new ArrayList(); 3626 dnses.add(mDefaultDns); 3627 if (DBG) { 3628 loge("no dns provided for netId " + netId + ", so using defaults"); 3629 } 3630 } 3631 if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); 3632 try { 3633 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 3634 newLp.getDomains()); 3635 } catch (Exception e) { 3636 loge("Exception in setDnsServersForNetwork: " + e); 3637 } 3638 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 3639 if (defaultNai != null && defaultNai.network.netId == netId) { 3640 setDefaultDnsSystemProperties(dnses); 3641 } 3642 flushVmDnsCache(); 3643 } else if (flush) { 3644 try { 3645 mNetd.flushNetworkDnsCache(netId); 3646 } catch (Exception e) { 3647 loge("Exception in flushNetworkDnsCache: " + e); 3648 } 3649 flushVmDnsCache(); 3650 } 3651 } 3652 3653 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 3654 int last = 0; 3655 for (InetAddress dns : dnses) { 3656 ++last; 3657 String key = "net.dns" + last; 3658 String value = dns.getHostAddress(); 3659 SystemProperties.set(key, value); 3660 } 3661 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 3662 String key = "net.dns" + i; 3663 SystemProperties.set(key, ""); 3664 } 3665 mNumDnsEntries = last; 3666 } 3667 3668 3669 private void updateCapabilities(NetworkAgentInfo networkAgent, 3670 NetworkCapabilities networkCapabilities) { 3671 // TODO - turn this on in MR1 when we have more dogfooding time. 3672 // rematchAllNetworksAndRequests(); 3673 if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { 3674 synchronized (networkAgent) { 3675 networkAgent.networkCapabilities = networkCapabilities; 3676 } 3677 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); 3678 } 3679 } 3680 3681 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 3682 for (int i = 0; i < nai.networkRequests.size(); i++) { 3683 NetworkRequest nr = nai.networkRequests.valueAt(i); 3684 // Don't send listening requests to factories. b/17393458 3685 if (!isRequest(nr)) continue; 3686 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 3687 } 3688 } 3689 3690 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 3691 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 3692 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3693 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 3694 networkRequest); 3695 } 3696 } 3697 3698 private void callCallbackForRequest(NetworkRequestInfo nri, 3699 NetworkAgentInfo networkAgent, int notificationType) { 3700 if (nri.messenger == null) return; // Default request has no msgr 3701 Bundle bundle = new Bundle(); 3702 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 3703 new NetworkRequest(nri.request)); 3704 Message msg = Message.obtain(); 3705 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 3706 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 3707 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 3708 } 3709 switch (notificationType) { 3710 case ConnectivityManager.CALLBACK_LOSING: { 3711 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 3712 break; 3713 } 3714 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 3715 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 3716 new NetworkCapabilities(networkAgent.networkCapabilities)); 3717 break; 3718 } 3719 case ConnectivityManager.CALLBACK_IP_CHANGED: { 3720 bundle.putParcelable(LinkProperties.class.getSimpleName(), 3721 new LinkProperties(networkAgent.linkProperties)); 3722 break; 3723 } 3724 } 3725 msg.what = notificationType; 3726 msg.setData(bundle); 3727 try { 3728 if (VDBG) { 3729 log("sending notification " + notifyTypeToName(notificationType) + 3730 " for " + nri.request); 3731 } 3732 nri.messenger.send(msg); 3733 } catch (RemoteException e) { 3734 // may occur naturally in the race of binder death. 3735 loge("RemoteException caught trying to send a callback msg for " + nri.request); 3736 } 3737 } 3738 3739 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 3740 for (int i = 0; i < nai.networkRequests.size(); i++) { 3741 NetworkRequest nr = nai.networkRequests.valueAt(i); 3742 // Ignore listening requests. 3743 if (!isRequest(nr)) continue; 3744 loge("Dead network still had at least " + nr); 3745 break; 3746 } 3747 nai.asyncChannel.disconnect(); 3748 } 3749 3750 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 3751 if (oldNetwork == null) { 3752 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 3753 return; 3754 } 3755 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 3756 teardownUnneededNetwork(oldNetwork); 3757 } 3758 3759 private void makeDefault(NetworkAgentInfo newNetwork) { 3760 if (DBG) log("Switching to new default network: " + newNetwork); 3761 mActiveDefaultNetwork = newNetwork.networkInfo.getType(); 3762 setupDataActivityTracking(newNetwork); 3763 try { 3764 mNetd.setDefaultNetId(newNetwork.network.netId); 3765 } catch (Exception e) { 3766 loge("Exception setting default network :" + e); 3767 } 3768 notifyLockdownVpn(newNetwork); 3769 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 3770 updateTcpBufferSizes(newNetwork); 3771 } 3772 3773 // Handles a network appearing or improving its score. 3774 // 3775 // - Evaluates all current NetworkRequests that can be 3776 // satisfied by newNetwork, and reassigns to newNetwork 3777 // any such requests for which newNetwork is the best. 3778 // 3779 // - Lingers any Networks that as a result are no longer 3780 // needed. A network is needed if it is the best network for 3781 // one or more NetworkRequests, or if it is a VPN. 3782 // 3783 // - Tears down newNetwork if it just became validated 3784 // (i.e. nascent==true) but turns out to be unneeded. 3785 // Does not tear down newNetwork if it is unvalidated, 3786 // because future validation may improve newNetwork's 3787 // score enough that it is needed. 3788 // 3789 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 3790 // it does not remove NetworkRequests that other Networks could better satisfy. 3791 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 3792 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 3793 // as it performs better by a factor of the number of Networks. 3794 // 3795 // @param nascent indicates if newNetwork just became validated, in which case it should be 3796 // torn down if unneeded. If nascent is false, no action is taken if newNetwork 3797 // is found to be unneeded by this call. Presumably, in this case, either: 3798 // - newNetwork is unvalidated (and left alive), or 3799 // - the NetworkRequests keeping newNetwork alive have been transitioned to 3800 // another higher scoring network by another call to rematchNetworkAndRequests() 3801 // and this other call also lingered newNetwork. 3802 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, boolean nascent) { 3803 if (!newNetwork.created) loge("ERROR: uncreated network being rematched."); 3804 if (nascent && !newNetwork.validated) loge("ERROR: nascent network not validated."); 3805 boolean keep = newNetwork.isVPN(); 3806 boolean isNewDefault = false; 3807 if (DBG) log("rematching " + newNetwork.name()); 3808 // Find and migrate to this Network any NetworkRequests for 3809 // which this network is now the best. 3810 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 3811 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 3812 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3813 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 3814 if (newNetwork == currentNetwork) { 3815 if (DBG) { 3816 log("Network " + newNetwork.name() + " was already satisfying" + 3817 " request " + nri.request.requestId + ". No change."); 3818 } 3819 keep = true; 3820 continue; 3821 } 3822 3823 // check if it satisfies the NetworkCapabilities 3824 if (VDBG) log(" checking if request is satisfied: " + nri.request); 3825 if (nri.request.networkCapabilities.satisfiedByNetworkCapabilities( 3826 newNetwork.networkCapabilities)) { 3827 if (!nri.isRequest) { 3828 // This is not a request, it's a callback listener. 3829 // Add it to newNetwork regardless of score. 3830 newNetwork.addRequest(nri.request); 3831 continue; 3832 } 3833 3834 // next check if it's better than any current network we're using for 3835 // this request 3836 if (VDBG) { 3837 log("currentScore = " + 3838 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 3839 ", newScore = " + newNetwork.getCurrentScore()); 3840 } 3841 if (currentNetwork == null || 3842 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 3843 if (currentNetwork != null) { 3844 if (DBG) log(" accepting network in place of " + currentNetwork.name()); 3845 currentNetwork.networkRequests.remove(nri.request.requestId); 3846 currentNetwork.networkLingered.add(nri.request); 3847 affectedNetworks.add(currentNetwork); 3848 } else { 3849 if (DBG) log(" accepting network in place of null"); 3850 } 3851 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 3852 newNetwork.addRequest(nri.request); 3853 if (nri.isRequest && nri.request.legacyType != TYPE_NONE) { 3854 mLegacyTypeTracker.add(nri.request.legacyType, newNetwork); 3855 } 3856 keep = true; 3857 // Tell NetworkFactories about the new score, so they can stop 3858 // trying to connect if they know they cannot match it. 3859 // TODO - this could get expensive if we have alot of requests for this 3860 // network. Think about if there is a way to reduce this. Push 3861 // netid->request mapping to each factory? 3862 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 3863 if (mDefaultRequest.requestId == nri.request.requestId) { 3864 isNewDefault = true; 3865 // TODO: Remove following line. It's redundant with makeDefault call. 3866 mActiveDefaultNetwork = newNetwork.networkInfo.getType(); 3867 if (newNetwork.linkProperties != null) { 3868 updateTcpBufferSizes(newNetwork); 3869 setDefaultDnsSystemProperties( 3870 newNetwork.linkProperties.getDnsServers()); 3871 } else { 3872 setDefaultDnsSystemProperties(new ArrayList<InetAddress>()); 3873 } 3874 // Maintain the illusion: since the legacy API only 3875 // understands one network at a time, we must pretend 3876 // that the current default network disconnected before 3877 // the new one connected. 3878 if (currentNetwork != null) { 3879 mLegacyTypeTracker.remove(currentNetwork.networkInfo.getType(), 3880 currentNetwork); 3881 } 3882 mDefaultInetConditionPublished = newNetwork.validated ? 100 : 0; 3883 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 3884 notifyLockdownVpn(newNetwork); 3885 } 3886 } 3887 } 3888 } 3889 // Linger any networks that are no longer needed. 3890 for (NetworkAgentInfo nai : affectedNetworks) { 3891 boolean teardown = !nai.isVPN() && nai.validated; 3892 for (int i = 0; i < nai.networkRequests.size() && teardown; i++) { 3893 NetworkRequest nr = nai.networkRequests.valueAt(i); 3894 try { 3895 if (isRequest(nr)) { 3896 teardown = false; 3897 } 3898 } catch (Exception e) { 3899 loge("Request " + nr + " not found in mNetworkRequests."); 3900 loge(" it came from request list of " + nai.name()); 3901 } 3902 } 3903 if (teardown) { 3904 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 3905 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 3906 } else { 3907 // not going to linger, so kill the list of linger networks.. only 3908 // notify them of linger if it happens as the result of gaining another, 3909 // but if they transition and old network stays up, don't tell them of linger 3910 // or very delayed loss 3911 nai.networkLingered.clear(); 3912 if (VDBG) log("Lingered for " + nai.name() + " cleared"); 3913 } 3914 } 3915 if (keep) { 3916 if (isNewDefault) { 3917 // Notify system services that this network is up. 3918 makeDefault(newNetwork); 3919 synchronized (ConnectivityService.this) { 3920 // have a new default network, release the transition wakelock in 3921 // a second if it's held. The second pause is to allow apps 3922 // to reconnect over the new network 3923 if (mNetTransitionWakeLock.isHeld()) { 3924 mHandler.sendMessageDelayed(mHandler.obtainMessage( 3925 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 3926 mNetTransitionWakeLockSerialNumber, 0), 3927 1000); 3928 } 3929 } 3930 } 3931 3932 // Notify battery stats service about this network, both the normal 3933 // interface and any stacked links. 3934 // TODO: Avoid redoing this; this must only be done once when a network comes online. 3935 try { 3936 final IBatteryStats bs = BatteryStatsService.getService(); 3937 final int type = newNetwork.networkInfo.getType(); 3938 3939 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 3940 bs.noteNetworkInterfaceType(baseIface, type); 3941 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 3942 final String stackedIface = stacked.getInterfaceName(); 3943 bs.noteNetworkInterfaceType(stackedIface, type); 3944 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 3945 } 3946 } catch (RemoteException ignored) { 3947 } 3948 3949 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 3950 } else if (nascent) { 3951 // Only tear down newly validated networks here. Leave unvalidated to either become 3952 // validated (and get evaluated against peers, one losing here) or 3953 // NetworkMonitor reports a bad network and we tear it down then. 3954 // Networks that have been up for a while and are validated should be torn down via 3955 // the lingering process so communication on that network is given time to wrap up. 3956 // TODO: Could teardown unvalidated networks when their NetworkCapabilities 3957 // satisfy no NetworkRequests. 3958 if (DBG) log("Validated network turns out to be unwanted. Tear it down."); 3959 teardownUnneededNetwork(newNetwork); 3960 } 3961 } 3962 3963 // Attempt to rematch all Networks with NetworkRequests. This may result in Networks 3964 // being disconnected. 3965 // If only one Network's score or capabilities have been modified since the last time 3966 // this function was called, pass this Network in via the "changed" arugment, otherwise 3967 // pass null. 3968 // If only one Network has been changed but its NetworkCapabilities have not changed, 3969 // pass in the Network's score (from getCurrentScore()) prior to the change via 3970 // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. 3971 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 3972 // TODO: This may get slow. The "changed" parameter is provided for future optimization 3973 // to avoid the slowness. It is not simply enough to process just "changed", for 3974 // example in the case where "changed"'s score decreases and another network should begin 3975 // satifying a NetworkRequest that "changed" currently satisfies. 3976 3977 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 3978 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 3979 // rematchNetworkAndRequests() handles. 3980 if (changed != null && oldScore < changed.getCurrentScore()) { 3981 rematchNetworkAndRequests(changed, false); 3982 } else { 3983 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 3984 rematchNetworkAndRequests(nai, false); 3985 } 3986 } 3987 } 3988 3989 private void updateInetCondition(NetworkAgentInfo nai, boolean valid) { 3990 // Don't bother updating until we've graduated to validated at least once. 3991 if (!nai.validated) return; 3992 // For now only update icons for default connection. 3993 // TODO: Update WiFi and cellular icons separately. b/17237507 3994 if (!isDefaultNetwork(nai)) return; 3995 3996 int newInetCondition = valid ? 100 : 0; 3997 // Don't repeat publish. 3998 if (newInetCondition == mDefaultInetConditionPublished) return; 3999 4000 mDefaultInetConditionPublished = newInetCondition; 4001 sendInetConditionBroadcast(nai.networkInfo); 4002 } 4003 4004 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4005 if (mLockdownTracker != null) { 4006 if (nai != null && nai.isVPN()) { 4007 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4008 } else { 4009 mLockdownTracker.onNetworkInfoChanged(); 4010 } 4011 } 4012 } 4013 4014 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4015 NetworkInfo.State state = newInfo.getState(); 4016 NetworkInfo oldInfo = null; 4017 synchronized (networkAgent) { 4018 oldInfo = networkAgent.networkInfo; 4019 networkAgent.networkInfo = newInfo; 4020 } 4021 notifyLockdownVpn(networkAgent); 4022 4023 if (oldInfo != null && oldInfo.getState() == state) { 4024 if (VDBG) log("ignoring duplicate network state non-change"); 4025 return; 4026 } 4027 if (DBG) { 4028 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4029 (oldInfo == null ? "null" : oldInfo.getState()) + 4030 " to " + state); 4031 } 4032 4033 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4034 try { 4035 // This should never fail. Specifying an already in use NetID will cause failure. 4036 if (networkAgent.isVPN()) { 4037 mNetd.createVirtualNetwork(networkAgent.network.netId, 4038 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4039 (networkAgent.networkMisc == null || 4040 !networkAgent.networkMisc.allowBypass)); 4041 } else { 4042 mNetd.createPhysicalNetwork(networkAgent.network.netId); 4043 } 4044 } catch (Exception e) { 4045 loge("Error creating network " + networkAgent.network.netId + ": " 4046 + e.getMessage()); 4047 return; 4048 } 4049 networkAgent.created = true; 4050 updateLinkProperties(networkAgent, null); 4051 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4052 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4053 if (networkAgent.isVPN()) { 4054 // Temporarily disable the default proxy (not global). 4055 synchronized (mProxyLock) { 4056 if (!mDefaultProxyDisabled) { 4057 mDefaultProxyDisabled = true; 4058 if (mGlobalProxy == null && mDefaultProxy != null) { 4059 sendProxyBroadcast(null); 4060 } 4061 } 4062 } 4063 // TODO: support proxy per network. 4064 } 4065 // Consider network even though it is not yet validated. 4066 rematchNetworkAndRequests(networkAgent, false); 4067 } else if (state == NetworkInfo.State.DISCONNECTED || 4068 state == NetworkInfo.State.SUSPENDED) { 4069 networkAgent.asyncChannel.disconnect(); 4070 if (networkAgent.isVPN()) { 4071 synchronized (mProxyLock) { 4072 if (mDefaultProxyDisabled) { 4073 mDefaultProxyDisabled = false; 4074 if (mGlobalProxy == null && mDefaultProxy != null) { 4075 sendProxyBroadcast(mDefaultProxy); 4076 } 4077 } 4078 } 4079 } 4080 } 4081 } 4082 4083 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4084 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4085 if (score < 0) { 4086 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4087 "). Bumping score to min of 0"); 4088 score = 0; 4089 } 4090 4091 final int oldScore = nai.getCurrentScore(); 4092 nai.setCurrentScore(score); 4093 4094 if (nai.created) rematchAllNetworksAndRequests(nai, oldScore); 4095 4096 sendUpdatedScoreToFactories(nai); 4097 } 4098 4099 // notify only this one new request of the current state 4100 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4101 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4102 // TODO - read state from monitor to decide what to send. 4103// if (nai.networkMonitor.isLingering()) { 4104// notifyType = NetworkCallbacks.LOSING; 4105// } else if (nai.networkMonitor.isEvaluating()) { 4106// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4107// } 4108 callCallbackForRequest(nri, nai, notifyType); 4109 } 4110 4111 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 4112 // The NetworkInfo we actually send out has no bearing on the real 4113 // state of affairs. For example, if the default connection is mobile, 4114 // and a request for HIPRI has just gone away, we need to pretend that 4115 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4116 // the state to DISCONNECTED, even though the network is of type MOBILE 4117 // and is still connected. 4118 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4119 info.setType(type); 4120 if (connected) { 4121 info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); 4122 sendConnectedBroadcast(info); 4123 } else { 4124 info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo()); 4125 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4126 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4127 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4128 if (info.isFailover()) { 4129 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4130 nai.networkInfo.setFailover(false); 4131 } 4132 if (info.getReason() != null) { 4133 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4134 } 4135 if (info.getExtraInfo() != null) { 4136 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4137 } 4138 NetworkAgentInfo newDefaultAgent = null; 4139 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4140 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 4141 if (newDefaultAgent != null) { 4142 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4143 newDefaultAgent.networkInfo); 4144 } else { 4145 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4146 } 4147 } 4148 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4149 mDefaultInetConditionPublished); 4150 final Intent immediateIntent = new Intent(intent); 4151 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 4152 sendStickyBroadcast(immediateIntent); 4153 sendStickyBroadcast(intent); 4154 if (newDefaultAgent != null) { 4155 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4156 } 4157 } 4158 } 4159 4160 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4161 if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4162 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4163 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4164 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4165 if (VDBG) log(" sending notification for " + nr); 4166 callCallbackForRequest(nri, networkAgent, notifyType); 4167 } 4168 } 4169 4170 private String notifyTypeToName(int notifyType) { 4171 switch (notifyType) { 4172 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4173 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4174 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4175 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4176 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4177 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4178 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4179 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4180 } 4181 return "UNKNOWN"; 4182 } 4183 4184 private LinkProperties getLinkPropertiesForTypeInternal(int networkType) { 4185 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 4186 if (nai != null) { 4187 synchronized (nai) { 4188 return new LinkProperties(nai.linkProperties); 4189 } 4190 } 4191 return new LinkProperties(); 4192 } 4193 4194 private NetworkInfo getNetworkInfoForType(int networkType) { 4195 if (!mLegacyTypeTracker.isTypeSupported(networkType)) 4196 return null; 4197 4198 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 4199 if (nai != null) { 4200 NetworkInfo result = new NetworkInfo(nai.networkInfo); 4201 result.setType(networkType); 4202 return result; 4203 } else { 4204 NetworkInfo result = new NetworkInfo( 4205 networkType, 0, ConnectivityManager.getNetworkTypeName(networkType), ""); 4206 result.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 4207 result.setIsAvailable(true); 4208 return result; 4209 } 4210 } 4211 4212 private NetworkCapabilities getNetworkCapabilitiesForType(int networkType) { 4213 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 4214 if (nai != null) { 4215 synchronized (nai) { 4216 return new NetworkCapabilities(nai.networkCapabilities); 4217 } 4218 } 4219 return new NetworkCapabilities(); 4220 } 4221 4222 @Override 4223 public boolean addVpnAddress(String address, int prefixLength) { 4224 throwIfLockdownEnabled(); 4225 int user = UserHandle.getUserId(Binder.getCallingUid()); 4226 synchronized (mVpns) { 4227 return mVpns.get(user).addAddress(address, prefixLength); 4228 } 4229 } 4230 4231 @Override 4232 public boolean removeVpnAddress(String address, int prefixLength) { 4233 throwIfLockdownEnabled(); 4234 int user = UserHandle.getUserId(Binder.getCallingUid()); 4235 synchronized (mVpns) { 4236 return mVpns.get(user).removeAddress(address, prefixLength); 4237 } 4238 } 4239} 4240