ConnectivityService.java revision f9b5c26309c9d6c2e5ad5116d8e0e055bc5818a2
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.CaptivePortalTracker; 59import android.net.ConnectivityManager; 60import android.net.IConnectivityManager; 61import android.net.INetworkManagementEventObserver; 62import android.net.INetworkPolicyListener; 63import android.net.INetworkPolicyManager; 64import android.net.INetworkStatsService; 65import android.net.LinkAddress; 66import android.net.LinkProperties; 67import android.net.LinkProperties.CompareResult; 68import android.net.LinkQualityInfo; 69import android.net.MobileDataStateTracker; 70import android.net.Network; 71import android.net.NetworkAgent; 72import android.net.NetworkCapabilities; 73import android.net.NetworkConfig; 74import android.net.NetworkInfo; 75import android.net.NetworkInfo.DetailedState; 76import android.net.NetworkFactory; 77import android.net.NetworkMisc; 78import android.net.NetworkQuotaInfo; 79import android.net.NetworkRequest; 80import android.net.NetworkState; 81import android.net.NetworkStateTracker; 82import android.net.NetworkUtils; 83import android.net.Proxy; 84import android.net.ProxyDataTracker; 85import android.net.ProxyInfo; 86import android.net.RouteInfo; 87import android.net.SamplingDataTracker; 88import android.net.UidRange; 89import android.net.Uri; 90import android.net.wimax.WimaxManagerConstants; 91import android.os.AsyncTask; 92import android.os.Binder; 93import android.os.Build; 94import android.os.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.net.LegacyVpnInfo; 124import com.android.internal.net.VpnConfig; 125import com.android.internal.net.VpnProfile; 126import com.android.internal.telephony.DctConstants; 127import com.android.internal.telephony.Phone; 128import com.android.internal.telephony.PhoneConstants; 129import com.android.internal.telephony.TelephonyIntents; 130import com.android.internal.util.AsyncChannel; 131import com.android.internal.util.IndentingPrintWriter; 132import com.android.internal.util.XmlUtils; 133import com.android.server.am.BatteryStatsService; 134import com.android.server.connectivity.DataConnectionStats; 135import com.android.server.connectivity.Nat464Xlat; 136import com.android.server.connectivity.NetworkAgentInfo; 137import com.android.server.connectivity.NetworkMonitor; 138import com.android.server.connectivity.PacManager; 139import com.android.server.connectivity.Tethering; 140import com.android.server.connectivity.Vpn; 141import com.android.server.net.BaseNetworkObserver; 142import com.android.server.net.LockdownVpnTracker; 143import com.google.android.collect.Lists; 144import com.google.android.collect.Sets; 145 146import dalvik.system.DexClassLoader; 147 148import org.xmlpull.v1.XmlPullParser; 149import org.xmlpull.v1.XmlPullParserException; 150 151import java.io.File; 152import java.io.FileDescriptor; 153import java.io.FileNotFoundException; 154import java.io.FileReader; 155import java.io.IOException; 156import java.io.PrintWriter; 157import java.lang.reflect.Constructor; 158import java.net.HttpURLConnection; 159import java.net.Inet4Address; 160import java.net.Inet6Address; 161import java.net.InetAddress; 162import java.net.URL; 163import java.net.UnknownHostException; 164import java.util.ArrayList; 165import java.util.Arrays; 166import java.util.Collection; 167import java.util.GregorianCalendar; 168import java.util.HashMap; 169import java.util.HashSet; 170import java.util.List; 171import java.util.Map; 172import java.util.Random; 173import java.util.concurrent.atomic.AtomicBoolean; 174import java.util.concurrent.atomic.AtomicInteger; 175 176import javax.net.ssl.HostnameVerifier; 177import javax.net.ssl.HttpsURLConnection; 178import javax.net.ssl.SSLSession; 179 180/** 181 * @hide 182 */ 183public class ConnectivityService extends IConnectivityManager.Stub { 184 private static final String TAG = "ConnectivityService"; 185 186 private static final boolean DBG = true; 187 private static final boolean VDBG = true; // STOPSHIP 188 189 // network sampling debugging 190 private static final boolean SAMPLE_DBG = false; 191 192 private static final boolean LOGD_RULES = false; 193 194 // TODO: create better separation between radio types and network types 195 196 // how long to wait before switching back to a radio's default network 197 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 198 // system property that can override the above value 199 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 200 "android.telephony.apn-restore"; 201 202 // Default value if FAIL_FAST_TIME_MS is not set 203 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 204 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 205 private static final String FAIL_FAST_TIME_MS = 206 "persist.radio.fail_fast_time_ms"; 207 208 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 209 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 210 211 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 212 213 private PendingIntent mSampleIntervalElapsedIntent; 214 215 // Set network sampling interval at 12 minutes, this way, even if the timers get 216 // aggregated, it will fire at around 15 minutes, which should allow us to 217 // aggregate this timer with other timers (specially the socket keep alive timers) 218 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 12 * 60); 219 220 // start network sampling a minute after booting ... 221 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 60); 222 223 AlarmManager mAlarmManager; 224 225 private Tethering mTethering; 226 227 private KeyStore mKeyStore; 228 229 @GuardedBy("mVpns") 230 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 231 232 private boolean mLockdownEnabled; 233 private LockdownVpnTracker mLockdownTracker; 234 235 private Nat464Xlat mClat; 236 237 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 238 private Object mRulesLock = new Object(); 239 /** Currently active network rules by UID. */ 240 private SparseIntArray mUidRules = new SparseIntArray(); 241 /** Set of ifaces that are costly. */ 242 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 243 244 /** 245 * Sometimes we want to refer to the individual network state 246 * trackers separately, and sometimes we just want to treat them 247 * abstractly. 248 */ 249 private NetworkStateTracker mNetTrackers[]; 250 251 /* 252 * Handles captive portal check on a network. 253 * Only set if device has {@link PackageManager#FEATURE_WIFI}. 254 */ 255 private CaptivePortalTracker mCaptivePortalTracker; 256 257 /** 258 * A per Net list of the PID's that requested access to the net 259 * used both as a refcount and for per-PID DNS selection 260 */ 261 private List<Integer> mNetRequestersPids[]; 262 263 // priority order of the nettrackers 264 // (excluding dynamically set mNetworkPreference) 265 // TODO - move mNetworkTypePreference into this 266 private int[] mPriorityList; 267 268 private Context mContext; 269 private int mNetworkPreference; 270 private int mActiveDefaultNetwork = -1; 271 // 0 is full bad, 100 is full good 272 private int mDefaultInetCondition = 0; 273 private int mDefaultInetConditionPublished = 0; 274 private boolean mInetConditionChangeInFlight = false; 275 private int mDefaultConnectionSequence = 0; 276 277 private Object mDnsLock = new Object(); 278 private int mNumDnsEntries; 279 280 private boolean mTestMode; 281 private static ConnectivityService sServiceInstance; 282 283 private INetworkManagementService mNetd; 284 private INetworkPolicyManager mPolicyManager; 285 286 private static final int ENABLED = 1; 287 private static final int DISABLED = 0; 288 289 /** 290 * used internally as a delayed event to make us switch back to the 291 * default network 292 */ 293 private static final int EVENT_RESTORE_DEFAULT_NETWORK = 1; 294 295 /** 296 * used internally to change our mobile data enabled flag 297 */ 298 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 299 300 /** 301 * used internally to synchronize inet condition reports 302 * arg1 = networkType 303 * arg2 = condition (0 bad, 100 good) 304 */ 305 private static final int EVENT_INET_CONDITION_CHANGE = 4; 306 307 /** 308 * used internally to mark the end of inet condition hold periods 309 * arg1 = networkType 310 */ 311 private static final int EVENT_INET_CONDITION_HOLD_END = 5; 312 313 /** 314 * used internally to clear a wakelock when transitioning 315 * from one net to another. Clear happens when we get a new 316 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 317 * after a timeout if no network is found (typically 1 min). 318 */ 319 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 320 321 /** 322 * used internally to reload global proxy settings 323 */ 324 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 325 326 /** 327 * used internally to set external dependency met/unmet 328 * arg1 = ENABLED (met) or DISABLED (unmet) 329 * arg2 = NetworkType 330 */ 331 private static final int EVENT_SET_DEPENDENCY_MET = 10; 332 333 /** 334 * used internally to send a sticky broadcast delayed. 335 */ 336 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 337 338 /** 339 * Used internally to 340 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 341 */ 342 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 343 344 /** 345 * Used internally to disable fail fast of mobile data 346 */ 347 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 348 349 /** 350 * used internally to indicate that data sampling interval is up 351 */ 352 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 353 354 /** 355 * PAC manager has received new port. 356 */ 357 private static final int EVENT_PROXY_HAS_CHANGED = 16; 358 359 /** 360 * used internally when registering NetworkFactories 361 * obj = NetworkFactoryInfo 362 */ 363 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 364 365 /** 366 * used internally when registering NetworkAgents 367 * obj = Messenger 368 */ 369 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 370 371 /** 372 * used to add a network request 373 * includes a NetworkRequestInfo 374 */ 375 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 376 377 /** 378 * indicates a timeout period is over - check if we had a network yet or not 379 * and if not, call the timeout calback (but leave the request live until they 380 * cancel it. 381 * includes a NetworkRequestInfo 382 */ 383 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 384 385 /** 386 * used to add a network listener - no request 387 * includes a NetworkRequestInfo 388 */ 389 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 390 391 /** 392 * used to remove a network request, either a listener or a real request 393 * arg1 = UID of caller 394 * obj = NetworkRequest 395 */ 396 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 397 398 /** 399 * used internally when registering NetworkFactories 400 * obj = Messenger 401 */ 402 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 403 404 /** 405 * used internally to expire a wakelock when transitioning 406 * from one net to another. Expire happens when we fail to find 407 * a new network (typically after 1 minute) - 408 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 409 * a replacement network. 410 */ 411 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 412 413 414 /** Handler used for internal events. */ 415 final private InternalHandler mHandler; 416 /** Handler used for incoming {@link NetworkStateTracker} events. */ 417 final private NetworkStateTrackerHandler mTrackerHandler; 418 419 // list of DeathRecipients used to make sure features are turned off when 420 // a process dies 421 private List<FeatureUser> mFeatureUsers; 422 423 private boolean mSystemReady; 424 private Intent mInitialBroadcast; 425 426 private PowerManager.WakeLock mNetTransitionWakeLock; 427 private String mNetTransitionWakeLockCausedBy = ""; 428 private int mNetTransitionWakeLockSerialNumber; 429 private int mNetTransitionWakeLockTimeout; 430 431 private InetAddress mDefaultDns; 432 433 // used in DBG mode to track inet condition reports 434 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 435 private ArrayList mInetLog; 436 437 // track the current default http proxy - tell the world if we get a new one (real change) 438 private ProxyInfo mDefaultProxy = null; 439 private Object mProxyLock = new Object(); 440 private boolean mDefaultProxyDisabled = false; 441 442 // track the global proxy. 443 private ProxyInfo mGlobalProxy = null; 444 445 private PacManager mPacManager = null; 446 447 private SettingsObserver mSettingsObserver; 448 449 private UserManager mUserManager; 450 451 NetworkConfig[] mNetConfigs; 452 int mNetworksDefined; 453 454 private static class RadioAttributes { 455 public int mSimultaneity; 456 public int mType; 457 public RadioAttributes(String init) { 458 String fragments[] = init.split(","); 459 mType = Integer.parseInt(fragments[0]); 460 mSimultaneity = Integer.parseInt(fragments[1]); 461 } 462 } 463 RadioAttributes[] mRadioAttributes; 464 465 // the set of network types that can only be enabled by system/sig apps 466 List mProtectedNetworks; 467 468 private DataConnectionStats mDataConnectionStats; 469 470 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 471 472 TelephonyManager mTelephonyManager; 473 474 // sequence number for Networks 475 private final static int MIN_NET_ID = 10; // some reserved marks 476 private final static int MAX_NET_ID = 65535; 477 private int mNextNetId = MIN_NET_ID; 478 479 // sequence number of NetworkRequests 480 private int mNextNetworkRequestId = 1; 481 482 /** 483 * Implements support for the legacy "one network per network type" model. 484 * 485 * We used to have a static array of NetworkStateTrackers, one for each 486 * network type, but that doesn't work any more now that we can have, 487 * for example, more that one wifi network. This class stores all the 488 * NetworkAgentInfo objects that support a given type, but the legacy 489 * API will only see the first one. 490 * 491 * It serves two main purposes: 492 * 493 * 1. Provide information about "the network for a given type" (since this 494 * API only supports one). 495 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 496 * the first network for a given type changes, or if the default network 497 * changes. 498 */ 499 private class LegacyTypeTracker { 500 /** 501 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 502 * Each list holds references to all NetworkAgentInfos that are used to 503 * satisfy requests for that network type. 504 * 505 * This array is built out at startup such that an unsupported network 506 * doesn't get an ArrayList instance, making this a tristate: 507 * unsupported, supported but not active and active. 508 * 509 * The actual lists are populated when we scan the network types that 510 * are supported on this device. 511 */ 512 private ArrayList<NetworkAgentInfo> mTypeLists[]; 513 514 public LegacyTypeTracker() { 515 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 516 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 517 } 518 519 public void addSupportedType(int type) { 520 if (mTypeLists[type] != null) { 521 throw new IllegalStateException( 522 "legacy list for type " + type + "already initialized"); 523 } 524 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 525 } 526 527 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 528 return mNetworkForRequestId.get(mDefaultRequest.requestId) == nai; 529 } 530 531 public boolean isTypeSupported(int type) { 532 return isNetworkTypeValid(type) && mTypeLists[type] != null; 533 } 534 535 public NetworkAgentInfo getNetworkForType(int type) { 536 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 537 return mTypeLists[type].get(0); 538 } else { 539 return null; 540 } 541 } 542 543 public void add(int type, NetworkAgentInfo nai) { 544 if (!isTypeSupported(type)) { 545 return; // Invalid network type. 546 } 547 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 548 549 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 550 if (list.contains(nai)) { 551 loge("Attempting to register duplicate agent for type " + type + ": " + nai); 552 return; 553 } 554 555 if (list.isEmpty() || isDefaultNetwork(nai)) { 556 if (VDBG) log("Sending connected broadcast for type " + type + 557 "isDefaultNetwork=" + isDefaultNetwork(nai)); 558 sendLegacyNetworkBroadcast(nai, true, type); 559 } 560 list.add(nai); 561 } 562 563 public void remove(NetworkAgentInfo nai) { 564 if (VDBG) log("Removing agent " + nai); 565 for (int type = 0; type < mTypeLists.length; type++) { 566 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 567 if (list == null || list.isEmpty()) { 568 continue; 569 } 570 571 boolean wasFirstNetwork = false; 572 if (list.get(0).equals(nai)) { 573 // This network was the first in the list. Send broadcast. 574 wasFirstNetwork = true; 575 } 576 list.remove(nai); 577 578 if (wasFirstNetwork || isDefaultNetwork(nai)) { 579 if (VDBG) log("Sending disconnected broadcast for type " + type + 580 "isDefaultNetwork=" + isDefaultNetwork(nai)); 581 sendLegacyNetworkBroadcast(nai, false, type); 582 } 583 584 if (!list.isEmpty() && wasFirstNetwork) { 585 if (VDBG) log("Other network available for type " + type + 586 ", sending connected broadcast"); 587 sendLegacyNetworkBroadcast(list.get(0), false, type); 588 } 589 } 590 } 591 } 592 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 593 594 public ConnectivityService(Context context, INetworkManagementService netd, 595 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 596 // Currently, omitting a NetworkFactory will create one internally 597 // TODO: create here when we have cleaner WiMAX support 598 this(context, netd, statsService, policyManager, null); 599 } 600 601 public ConnectivityService(Context context, INetworkManagementService netManager, 602 INetworkStatsService statsService, INetworkPolicyManager policyManager, 603 NetworkFactory netFactory) { 604 if (DBG) log("ConnectivityService starting up"); 605 606 NetworkCapabilities netCap = new NetworkCapabilities(); 607 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 608 netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 609 mDefaultRequest = new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 610 NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(), 611 NetworkRequestInfo.REQUEST); 612 mNetworkRequests.put(mDefaultRequest, nri); 613 614 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 615 handlerThread.start(); 616 mHandler = new InternalHandler(handlerThread.getLooper()); 617 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 618 619 if (netFactory == null) { 620 netFactory = new DefaultNetworkFactory(context, mTrackerHandler); 621 } 622 623 // setup our unique device name 624 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 625 String id = Settings.Secure.getString(context.getContentResolver(), 626 Settings.Secure.ANDROID_ID); 627 if (id != null && id.length() > 0) { 628 String name = new String("android-").concat(id); 629 SystemProperties.set("net.hostname", name); 630 } 631 } 632 633 // read our default dns server ip 634 String dns = Settings.Global.getString(context.getContentResolver(), 635 Settings.Global.DEFAULT_DNS_SERVER); 636 if (dns == null || dns.length() == 0) { 637 dns = context.getResources().getString( 638 com.android.internal.R.string.config_default_dns_server); 639 } 640 try { 641 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 642 } catch (IllegalArgumentException e) { 643 loge("Error setting defaultDns using " + dns); 644 } 645 646 mContext = checkNotNull(context, "missing Context"); 647 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 648 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 649 mKeyStore = KeyStore.getInstance(); 650 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 651 652 try { 653 mPolicyManager.registerListener(mPolicyListener); 654 } catch (RemoteException e) { 655 // ouch, no rules updates means some processes may never get network 656 loge("unable to register INetworkPolicyListener" + e.toString()); 657 } 658 659 final PowerManager powerManager = (PowerManager) context.getSystemService( 660 Context.POWER_SERVICE); 661 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 662 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 663 com.android.internal.R.integer.config_networkTransitionTimeout); 664 665 mNetTrackers = new NetworkStateTracker[ 666 ConnectivityManager.MAX_NETWORK_TYPE+1]; 667 668 mRadioAttributes = new RadioAttributes[ConnectivityManager.MAX_RADIO_TYPE+1]; 669 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 670 671 // Load device network attributes from resources 672 String[] raStrings = context.getResources().getStringArray( 673 com.android.internal.R.array.radioAttributes); 674 for (String raString : raStrings) { 675 RadioAttributes r = new RadioAttributes(raString); 676 if (VDBG) log("raString=" + raString + " r=" + r); 677 if (r.mType > ConnectivityManager.MAX_RADIO_TYPE) { 678 loge("Error in radioAttributes - ignoring attempt to define type " + r.mType); 679 continue; 680 } 681 if (mRadioAttributes[r.mType] != null) { 682 loge("Error in radioAttributes - ignoring attempt to redefine type " + 683 r.mType); 684 continue; 685 } 686 mRadioAttributes[r.mType] = r; 687 } 688 689 // TODO: What is the "correct" way to do determine if this is a wifi only device? 690 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 691 log("wifiOnly=" + wifiOnly); 692 String[] naStrings = context.getResources().getStringArray( 693 com.android.internal.R.array.networkAttributes); 694 for (String naString : naStrings) { 695 try { 696 NetworkConfig n = new NetworkConfig(naString); 697 if (VDBG) log("naString=" + naString + " config=" + n); 698 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 699 loge("Error in networkAttributes - ignoring attempt to define type " + 700 n.type); 701 continue; 702 } 703 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 704 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 705 n.type); 706 continue; 707 } 708 if (mNetConfigs[n.type] != null) { 709 loge("Error in networkAttributes - ignoring attempt to redefine type " + 710 n.type); 711 continue; 712 } 713 if (mRadioAttributes[n.radio] == null) { 714 loge("Error in networkAttributes - ignoring attempt to use undefined " + 715 "radio " + n.radio + " in network type " + n.type); 716 continue; 717 } 718 mLegacyTypeTracker.addSupportedType(n.type); 719 720 mNetConfigs[n.type] = n; 721 mNetworksDefined++; 722 } catch(Exception e) { 723 // ignore it - leave the entry null 724 } 725 } 726 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 727 728 mProtectedNetworks = new ArrayList<Integer>(); 729 int[] protectedNetworks = context.getResources().getIntArray( 730 com.android.internal.R.array.config_protectedNetworks); 731 for (int p : protectedNetworks) { 732 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 733 mProtectedNetworks.add(p); 734 } else { 735 if (DBG) loge("Ignoring protectedNetwork " + p); 736 } 737 } 738 739 // high priority first 740 mPriorityList = new int[mNetworksDefined]; 741 { 742 int insertionPoint = mNetworksDefined-1; 743 int currentLowest = 0; 744 int nextLowest = 0; 745 while (insertionPoint > -1) { 746 for (NetworkConfig na : mNetConfigs) { 747 if (na == null) continue; 748 if (na.priority < currentLowest) continue; 749 if (na.priority > currentLowest) { 750 if (na.priority < nextLowest || nextLowest == 0) { 751 nextLowest = na.priority; 752 } 753 continue; 754 } 755 mPriorityList[insertionPoint--] = na.type; 756 } 757 currentLowest = nextLowest; 758 nextLowest = 0; 759 } 760 } 761 762 mNetRequestersPids = 763 (List<Integer> [])new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE+1]; 764 for (int i : mPriorityList) { 765 mNetRequestersPids[i] = new ArrayList<Integer>(); 766 } 767 768 mFeatureUsers = new ArrayList<FeatureUser>(); 769 770 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 771 && SystemProperties.get("ro.build.type").equals("eng"); 772 773 // Create and start trackers for hard-coded networks 774 for (int targetNetworkType : mPriorityList) { 775 final NetworkConfig config = mNetConfigs[targetNetworkType]; 776 final NetworkStateTracker tracker; 777 try { 778 tracker = netFactory.createTracker(targetNetworkType, config); 779 mNetTrackers[targetNetworkType] = tracker; 780 } catch (IllegalArgumentException e) { 781 Slog.e(TAG, "Problem creating " + getNetworkTypeName(targetNetworkType) 782 + " tracker: " + e); 783 continue; 784 } 785 786 tracker.startMonitoring(context, mTrackerHandler); 787 if (config.isDefault()) { 788 tracker.reconnect(); 789 } 790 } 791 792 mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); 793 794 //set up the listener for user state for creating user VPNs 795 IntentFilter intentFilter = new IntentFilter(); 796 intentFilter.addAction(Intent.ACTION_USER_STARTING); 797 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 798 mContext.registerReceiverAsUser( 799 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 800 mClat = new Nat464Xlat(mContext, mNetd, this, mTrackerHandler); 801 802 try { 803 mNetd.registerObserver(mTethering); 804 mNetd.registerObserver(mDataActivityObserver); 805 mNetd.registerObserver(mClat); 806 } catch (RemoteException e) { 807 loge("Error registering observer :" + e); 808 } 809 810 if (DBG) { 811 mInetLog = new ArrayList(); 812 } 813 814 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 815 mSettingsObserver.observe(mContext); 816 817 mDataConnectionStats = new DataConnectionStats(mContext); 818 mDataConnectionStats.startMonitoring(); 819 820 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 821 822 IntentFilter filter = new IntentFilter(); 823 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 824 mContext.registerReceiver( 825 new BroadcastReceiver() { 826 @Override 827 public void onReceive(Context context, Intent intent) { 828 String action = intent.getAction(); 829 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 830 mHandler.sendMessage(mHandler.obtainMessage 831 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 832 } 833 } 834 }, 835 new IntentFilter(filter)); 836 837 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 838 839 filter = new IntentFilter(); 840 filter.addAction(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 841 mContext.registerReceiver(mProvisioningReceiver, filter); 842 843 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 844 } 845 846 private synchronized int nextNetworkRequestId() { 847 return mNextNetworkRequestId++; 848 } 849 850 private synchronized int nextNetId() { 851 int netId = mNextNetId; 852 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 853 return netId; 854 } 855 856 /** 857 * Factory that creates {@link NetworkStateTracker} instances using given 858 * {@link NetworkConfig}. 859 * 860 * TODO - this is obsolete and will be deleted. It's replaced by the 861 * registerNetworkFactory call and protocol. 862 * @Deprecated in favor of registerNetworkFactory dynamic bindings 863 */ 864 public interface NetworkFactory { 865 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config); 866 } 867 868 private static class DefaultNetworkFactory implements NetworkFactory { 869 private final Context mContext; 870 private final Handler mTrackerHandler; 871 872 public DefaultNetworkFactory(Context context, Handler trackerHandler) { 873 mContext = context; 874 mTrackerHandler = trackerHandler; 875 } 876 877 @Override 878 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config) { 879 switch (config.radio) { 880 case TYPE_WIMAX: 881 return makeWimaxStateTracker(mContext, mTrackerHandler); 882 case TYPE_PROXY: 883 return new ProxyDataTracker(); 884 default: 885 throw new IllegalArgumentException( 886 "Trying to create a NetworkStateTracker for an unknown radio type: " 887 + config.radio); 888 } 889 } 890 } 891 892 /** 893 * Loads external WiMAX library and registers as system service, returning a 894 * {@link NetworkStateTracker} for WiMAX. Caller is still responsible for 895 * invoking {@link NetworkStateTracker#startMonitoring(Context, Handler)}. 896 */ 897 private static NetworkStateTracker makeWimaxStateTracker( 898 Context context, Handler trackerHandler) { 899 // Initialize Wimax 900 DexClassLoader wimaxClassLoader; 901 Class wimaxStateTrackerClass = null; 902 Class wimaxServiceClass = null; 903 Class wimaxManagerClass; 904 String wimaxJarLocation; 905 String wimaxLibLocation; 906 String wimaxManagerClassName; 907 String wimaxServiceClassName; 908 String wimaxStateTrackerClassName; 909 910 NetworkStateTracker wimaxStateTracker = null; 911 912 boolean isWimaxEnabled = context.getResources().getBoolean( 913 com.android.internal.R.bool.config_wimaxEnabled); 914 915 if (isWimaxEnabled) { 916 try { 917 wimaxJarLocation = context.getResources().getString( 918 com.android.internal.R.string.config_wimaxServiceJarLocation); 919 wimaxLibLocation = context.getResources().getString( 920 com.android.internal.R.string.config_wimaxNativeLibLocation); 921 wimaxManagerClassName = context.getResources().getString( 922 com.android.internal.R.string.config_wimaxManagerClassname); 923 wimaxServiceClassName = context.getResources().getString( 924 com.android.internal.R.string.config_wimaxServiceClassname); 925 wimaxStateTrackerClassName = context.getResources().getString( 926 com.android.internal.R.string.config_wimaxStateTrackerClassname); 927 928 if (DBG) log("wimaxJarLocation: " + wimaxJarLocation); 929 wimaxClassLoader = new DexClassLoader(wimaxJarLocation, 930 new ContextWrapper(context).getCacheDir().getAbsolutePath(), 931 wimaxLibLocation, ClassLoader.getSystemClassLoader()); 932 933 try { 934 wimaxManagerClass = wimaxClassLoader.loadClass(wimaxManagerClassName); 935 wimaxStateTrackerClass = wimaxClassLoader.loadClass(wimaxStateTrackerClassName); 936 wimaxServiceClass = wimaxClassLoader.loadClass(wimaxServiceClassName); 937 } catch (ClassNotFoundException ex) { 938 loge("Exception finding Wimax classes: " + ex.toString()); 939 return null; 940 } 941 } catch(Resources.NotFoundException ex) { 942 loge("Wimax Resources does not exist!!! "); 943 return null; 944 } 945 946 try { 947 if (DBG) log("Starting Wimax Service... "); 948 949 Constructor wmxStTrkrConst = wimaxStateTrackerClass.getConstructor 950 (new Class[] {Context.class, Handler.class}); 951 wimaxStateTracker = (NetworkStateTracker) wmxStTrkrConst.newInstance( 952 context, trackerHandler); 953 954 Constructor wmxSrvConst = wimaxServiceClass.getDeclaredConstructor 955 (new Class[] {Context.class, wimaxStateTrackerClass}); 956 wmxSrvConst.setAccessible(true); 957 IBinder svcInvoker = (IBinder)wmxSrvConst.newInstance(context, wimaxStateTracker); 958 wmxSrvConst.setAccessible(false); 959 960 ServiceManager.addService(WimaxManagerConstants.WIMAX_SERVICE, svcInvoker); 961 962 } catch(Exception ex) { 963 loge("Exception creating Wimax classes: " + ex.toString()); 964 return null; 965 } 966 } else { 967 loge("Wimax is not enabled or not added to the network attributes!!! "); 968 return null; 969 } 970 971 return wimaxStateTracker; 972 } 973 974 private int getConnectivityChangeDelay() { 975 final ContentResolver cr = mContext.getContentResolver(); 976 977 /** Check system properties for the default value then use secure settings value, if any. */ 978 int defaultDelay = SystemProperties.getInt( 979 "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY, 980 ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT); 981 return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY, 982 defaultDelay); 983 } 984 985 private boolean teardown(NetworkStateTracker netTracker) { 986 if (netTracker.teardown()) { 987 netTracker.setTeardownRequested(true); 988 return true; 989 } else { 990 return false; 991 } 992 } 993 994 /** 995 * Check if UID should be blocked from using the network represented by the 996 * given {@link NetworkStateTracker}. 997 */ 998 private boolean isNetworkBlocked(int networkType, int uid) { 999 final boolean networkCostly; 1000 final int uidRules; 1001 1002 LinkProperties lp = getLinkPropertiesForType(networkType); 1003 final String iface = (lp == null ? "" : lp.getInterfaceName()); 1004 synchronized (mRulesLock) { 1005 networkCostly = mMeteredIfaces.contains(iface); 1006 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1007 } 1008 1009 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 1010 return true; 1011 } 1012 1013 // no restrictive rules; network is visible 1014 return false; 1015 } 1016 1017 /** 1018 * Return a filtered {@link NetworkInfo}, potentially marked 1019 * {@link DetailedState#BLOCKED} based on 1020 * {@link #isNetworkBlocked}. 1021 */ 1022 private NetworkInfo getFilteredNetworkInfo(int networkType, int uid) { 1023 NetworkInfo info = getNetworkInfoForType(networkType); 1024 return getFilteredNetworkInfo(info, networkType, uid); 1025 } 1026 1027 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, int networkType, int uid) { 1028 if (isNetworkBlocked(networkType, uid)) { 1029 // network is blocked; clone and override state 1030 info = new NetworkInfo(info); 1031 info.setDetailedState(DetailedState.BLOCKED, null, null); 1032 } 1033 if (mLockdownTracker != null) { 1034 info = mLockdownTracker.augmentNetworkInfo(info); 1035 } 1036 return info; 1037 } 1038 1039 /** 1040 * Return NetworkInfo for the active (i.e., connected) network interface. 1041 * It is assumed that at most one network is active at a time. If more 1042 * than one is active, it is indeterminate which will be returned. 1043 * @return the info for the active network, or {@code null} if none is 1044 * active 1045 */ 1046 @Override 1047 public NetworkInfo getActiveNetworkInfo() { 1048 enforceAccessPermission(); 1049 final int uid = Binder.getCallingUid(); 1050 return getNetworkInfo(mActiveDefaultNetwork, uid); 1051 } 1052 1053 // only called when the default request is satisfied 1054 private void updateActiveDefaultNetwork(NetworkAgentInfo nai) { 1055 if (nai != null) { 1056 mActiveDefaultNetwork = nai.networkInfo.getType(); 1057 } else { 1058 mActiveDefaultNetwork = TYPE_NONE; 1059 } 1060 } 1061 1062 /** 1063 * Find the first Provisioning network. 1064 * 1065 * @return NetworkInfo or null if none. 1066 */ 1067 private NetworkInfo getProvisioningNetworkInfo() { 1068 enforceAccessPermission(); 1069 1070 // Find the first Provisioning Network 1071 NetworkInfo provNi = null; 1072 for (NetworkInfo ni : getAllNetworkInfo()) { 1073 if (ni.isConnectedToProvisioningNetwork()) { 1074 provNi = ni; 1075 break; 1076 } 1077 } 1078 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 1079 return provNi; 1080 } 1081 1082 /** 1083 * Find the first Provisioning network or the ActiveDefaultNetwork 1084 * if there is no Provisioning network 1085 * 1086 * @return NetworkInfo or null if none. 1087 */ 1088 @Override 1089 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 1090 enforceAccessPermission(); 1091 1092 NetworkInfo provNi = getProvisioningNetworkInfo(); 1093 if (provNi == null) { 1094 final int uid = Binder.getCallingUid(); 1095 provNi = getNetworkInfo(mActiveDefaultNetwork, uid); 1096 } 1097 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 1098 return provNi; 1099 } 1100 1101 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1102 enforceAccessPermission(); 1103 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 1104 return getNetworkInfoForType(mActiveDefaultNetwork); 1105 } 1106 return null; 1107 } 1108 1109 @Override 1110 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1111 enforceConnectivityInternalPermission(); 1112 return getNetworkInfo(mActiveDefaultNetwork, uid); 1113 } 1114 1115 @Override 1116 public NetworkInfo getNetworkInfo(int networkType) { 1117 enforceAccessPermission(); 1118 final int uid = Binder.getCallingUid(); 1119 return getNetworkInfo(networkType, uid); 1120 } 1121 1122 private NetworkInfo getNetworkInfo(int networkType, int uid) { 1123 NetworkInfo info = null; 1124 if (isNetworkTypeValid(networkType)) { 1125 if (getNetworkInfoForType(networkType) != null) { 1126 info = getFilteredNetworkInfo(networkType, uid); 1127 } 1128 } 1129 return info; 1130 } 1131 1132 @Override 1133 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1134 enforceAccessPermission(); 1135 if (network == null) return null; 1136 1137 final int uid = Binder.getCallingUid(); 1138 NetworkAgentInfo nai = null; 1139 synchronized (mNetworkForNetId) { 1140 nai = mNetworkForNetId.get(network.netId); 1141 } 1142 if (nai == null) return null; 1143 synchronized (nai) { 1144 if (nai.networkInfo == null) return null; 1145 1146 return getFilteredNetworkInfo(nai.networkInfo, nai.networkInfo.getType(), uid); 1147 } 1148 } 1149 1150 @Override 1151 public NetworkInfo[] getAllNetworkInfo() { 1152 enforceAccessPermission(); 1153 final int uid = Binder.getCallingUid(); 1154 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1155 synchronized (mRulesLock) { 1156 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1157 networkType++) { 1158 if (getNetworkInfoForType(networkType) != null) { 1159 result.add(getFilteredNetworkInfo(networkType, uid)); 1160 } 1161 } 1162 } 1163 return result.toArray(new NetworkInfo[result.size()]); 1164 } 1165 1166 @Override 1167 public Network[] getAllNetworks() { 1168 enforceAccessPermission(); 1169 final ArrayList<Network> result = new ArrayList(); 1170 synchronized (mNetworkForNetId) { 1171 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1172 result.add(new Network(mNetworkForNetId.valueAt(i).network)); 1173 } 1174 } 1175 return result.toArray(new Network[result.size()]); 1176 } 1177 1178 @Override 1179 public boolean isNetworkSupported(int networkType) { 1180 enforceAccessPermission(); 1181 return (isNetworkTypeValid(networkType) && (getNetworkInfoForType(networkType) != null)); 1182 } 1183 1184 /** 1185 * Return LinkProperties for the active (i.e., connected) default 1186 * network interface. It is assumed that at most one default network 1187 * is active at a time. If more than one is active, it is indeterminate 1188 * which will be returned. 1189 * @return the ip properties for the active network, or {@code null} if 1190 * none is active 1191 */ 1192 @Override 1193 public LinkProperties getActiveLinkProperties() { 1194 return getLinkPropertiesForType(mActiveDefaultNetwork); 1195 } 1196 1197 @Override 1198 public LinkProperties getLinkPropertiesForType(int networkType) { 1199 enforceAccessPermission(); 1200 if (isNetworkTypeValid(networkType)) { 1201 return getLinkPropertiesForTypeInternal(networkType); 1202 } 1203 return null; 1204 } 1205 1206 // TODO - this should be ALL networks 1207 @Override 1208 public LinkProperties getLinkProperties(Network network) { 1209 enforceAccessPermission(); 1210 NetworkAgentInfo nai = null; 1211 synchronized (mNetworkForNetId) { 1212 nai = mNetworkForNetId.get(network.netId); 1213 } 1214 1215 if (nai != null) { 1216 synchronized (nai) { 1217 return new LinkProperties(nai.linkProperties); 1218 } 1219 } 1220 return null; 1221 } 1222 1223 @Override 1224 public NetworkCapabilities getNetworkCapabilities(Network network) { 1225 enforceAccessPermission(); 1226 NetworkAgentInfo nai = null; 1227 synchronized (mNetworkForNetId) { 1228 nai = mNetworkForNetId.get(network.netId); 1229 } 1230 if (nai != null) { 1231 synchronized (nai) { 1232 return new NetworkCapabilities(nai.networkCapabilities); 1233 } 1234 } 1235 return null; 1236 } 1237 1238 @Override 1239 public NetworkState[] getAllNetworkState() { 1240 enforceAccessPermission(); 1241 final int uid = Binder.getCallingUid(); 1242 final ArrayList<NetworkState> result = Lists.newArrayList(); 1243 synchronized (mRulesLock) { 1244 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1245 networkType++) { 1246 if (getNetworkInfoForType(networkType) != null) { 1247 final NetworkInfo info = getFilteredNetworkInfo(networkType, uid); 1248 final LinkProperties lp = getLinkPropertiesForTypeInternal(networkType); 1249 final NetworkCapabilities netcap = getNetworkCapabilitiesForType(networkType); 1250 result.add(new NetworkState(info, lp, netcap)); 1251 } 1252 } 1253 } 1254 return result.toArray(new NetworkState[result.size()]); 1255 } 1256 1257 private NetworkState getNetworkStateUnchecked(int networkType) { 1258 if (isNetworkTypeValid(networkType)) { 1259 NetworkInfo info = getNetworkInfoForType(networkType); 1260 if (info != null) { 1261 return new NetworkState(info, 1262 getLinkPropertiesForTypeInternal(networkType), 1263 getNetworkCapabilitiesForType(networkType)); 1264 } 1265 } 1266 return null; 1267 } 1268 1269 @Override 1270 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1271 enforceAccessPermission(); 1272 1273 final long token = Binder.clearCallingIdentity(); 1274 try { 1275 final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork); 1276 if (state != null) { 1277 try { 1278 return mPolicyManager.getNetworkQuotaInfo(state); 1279 } catch (RemoteException e) { 1280 } 1281 } 1282 return null; 1283 } finally { 1284 Binder.restoreCallingIdentity(token); 1285 } 1286 } 1287 1288 @Override 1289 public boolean isActiveNetworkMetered() { 1290 enforceAccessPermission(); 1291 final long token = Binder.clearCallingIdentity(); 1292 try { 1293 return isNetworkMeteredUnchecked(mActiveDefaultNetwork); 1294 } finally { 1295 Binder.restoreCallingIdentity(token); 1296 } 1297 } 1298 1299 private boolean isNetworkMeteredUnchecked(int networkType) { 1300 final NetworkState state = getNetworkStateUnchecked(networkType); 1301 if (state != null) { 1302 try { 1303 return mPolicyManager.isNetworkMetered(state); 1304 } catch (RemoteException e) { 1305 } 1306 } 1307 return false; 1308 } 1309 1310 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1311 @Override 1312 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1313 int deviceType = Integer.parseInt(label); 1314 sendDataActivityBroadcast(deviceType, active, tsNanos); 1315 } 1316 }; 1317 1318 /** 1319 * Used to notice when the calling process dies so we can self-expire 1320 * 1321 * Also used to know if the process has cleaned up after itself when 1322 * our auto-expire timer goes off. The timer has a link to an object. 1323 * 1324 */ 1325 private class FeatureUser implements IBinder.DeathRecipient { 1326 int mNetworkType; 1327 String mFeature; 1328 IBinder mBinder; 1329 int mPid; 1330 int mUid; 1331 long mCreateTime; 1332 1333 FeatureUser(int type, String feature, IBinder binder) { 1334 super(); 1335 mNetworkType = type; 1336 mFeature = feature; 1337 mBinder = binder; 1338 mPid = getCallingPid(); 1339 mUid = getCallingUid(); 1340 mCreateTime = System.currentTimeMillis(); 1341 1342 try { 1343 mBinder.linkToDeath(this, 0); 1344 } catch (RemoteException e) { 1345 binderDied(); 1346 } 1347 } 1348 1349 void unlinkDeathRecipient() { 1350 mBinder.unlinkToDeath(this, 0); 1351 } 1352 1353 public void binderDied() { 1354 log("ConnectivityService FeatureUser binderDied(" + 1355 mNetworkType + ", " + mFeature + ", " + mBinder + "), created " + 1356 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1357 stopUsingNetworkFeature(this, false); 1358 } 1359 1360 public void expire() { 1361 if (VDBG) { 1362 log("ConnectivityService FeatureUser expire(" + 1363 mNetworkType + ", " + mFeature + ", " + mBinder +"), created " + 1364 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1365 } 1366 stopUsingNetworkFeature(this, false); 1367 } 1368 1369 public boolean isSameUser(FeatureUser u) { 1370 if (u == null) return false; 1371 1372 return isSameUser(u.mPid, u.mUid, u.mNetworkType, u.mFeature); 1373 } 1374 1375 public boolean isSameUser(int pid, int uid, int networkType, String feature) { 1376 if ((mPid == pid) && (mUid == uid) && (mNetworkType == networkType) && 1377 TextUtils.equals(mFeature, feature)) { 1378 return true; 1379 } 1380 return false; 1381 } 1382 1383 public String toString() { 1384 return "FeatureUser("+mNetworkType+","+mFeature+","+mPid+","+mUid+"), created " + 1385 (System.currentTimeMillis() - mCreateTime) + " mSec ago"; 1386 } 1387 } 1388 1389 // javadoc from interface 1390 public int startUsingNetworkFeature(int networkType, String feature, 1391 IBinder binder) { 1392 long startTime = 0; 1393 if (DBG) { 1394 startTime = SystemClock.elapsedRealtime(); 1395 } 1396 if (VDBG) { 1397 log("startUsingNetworkFeature for net " + networkType + ": " + feature + ", uid=" 1398 + Binder.getCallingUid()); 1399 } 1400 enforceChangePermission(); 1401 try { 1402 if (!ConnectivityManager.isNetworkTypeValid(networkType) || 1403 mNetConfigs[networkType] == null) { 1404 return PhoneConstants.APN_REQUEST_FAILED; 1405 } 1406 1407 FeatureUser f = new FeatureUser(networkType, feature, binder); 1408 1409 // TODO - move this into individual networktrackers 1410 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1411 1412 if (mLockdownEnabled) { 1413 // Since carrier APNs usually aren't available from VPN 1414 // endpoint, mark them as unavailable. 1415 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1416 } 1417 1418 if (mProtectedNetworks.contains(usedNetworkType)) { 1419 enforceConnectivityInternalPermission(); 1420 } 1421 1422 // if UID is restricted, don't allow them to bring up metered APNs 1423 final boolean networkMetered = isNetworkMeteredUnchecked(usedNetworkType); 1424 final int uidRules; 1425 synchronized (mRulesLock) { 1426 uidRules = mUidRules.get(Binder.getCallingUid(), RULE_ALLOW_ALL); 1427 } 1428 if (networkMetered && (uidRules & RULE_REJECT_METERED) != 0) { 1429 return PhoneConstants.APN_REQUEST_FAILED; 1430 } 1431 1432 NetworkStateTracker network = mNetTrackers[usedNetworkType]; 1433 if (network != null) { 1434 Integer currentPid = new Integer(getCallingPid()); 1435 if (usedNetworkType != networkType) { 1436 NetworkInfo ni = network.getNetworkInfo(); 1437 1438 if (ni.isAvailable() == false) { 1439 if (!TextUtils.equals(feature,Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 1440 if (DBG) log("special network not available ni=" + ni.getTypeName()); 1441 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1442 } else { 1443 // else make the attempt anyway - probably giving REQUEST_STARTED below 1444 if (DBG) { 1445 log("special network not available, but try anyway ni=" + 1446 ni.getTypeName()); 1447 } 1448 } 1449 } 1450 1451 int restoreTimer = getRestoreDefaultNetworkDelay(usedNetworkType); 1452 1453 synchronized(this) { 1454 boolean addToList = true; 1455 if (restoreTimer < 0) { 1456 // In case there is no timer is specified for the feature, 1457 // make sure we don't add duplicate entry with the same request. 1458 for (FeatureUser u : mFeatureUsers) { 1459 if (u.isSameUser(f)) { 1460 // Duplicate user is found. Do not add. 1461 addToList = false; 1462 break; 1463 } 1464 } 1465 } 1466 1467 if (addToList) mFeatureUsers.add(f); 1468 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1469 // this gets used for per-pid dns when connected 1470 mNetRequestersPids[usedNetworkType].add(currentPid); 1471 } 1472 } 1473 1474 if (restoreTimer >= 0) { 1475 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1476 EVENT_RESTORE_DEFAULT_NETWORK, f), restoreTimer); 1477 } 1478 1479 if ((ni.isConnectedOrConnecting() == true) && 1480 !network.isTeardownRequested()) { 1481 if (ni.isConnected() == true) { 1482 final long token = Binder.clearCallingIdentity(); 1483 try { 1484 // add the pid-specific dns 1485 handleDnsConfigurationChange(usedNetworkType); 1486 if (VDBG) log("special network already active"); 1487 } finally { 1488 Binder.restoreCallingIdentity(token); 1489 } 1490 return PhoneConstants.APN_ALREADY_ACTIVE; 1491 } 1492 if (VDBG) log("special network already connecting"); 1493 return PhoneConstants.APN_REQUEST_STARTED; 1494 } 1495 1496 // check if the radio in play can make another contact 1497 // assume if cannot for now 1498 1499 if (DBG) { 1500 log("startUsingNetworkFeature reconnecting to " + networkType + ": " + 1501 feature); 1502 } 1503 if (network.reconnect()) { 1504 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_STARTED"); 1505 return PhoneConstants.APN_REQUEST_STARTED; 1506 } else { 1507 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_FAILED"); 1508 return PhoneConstants.APN_REQUEST_FAILED; 1509 } 1510 } else { 1511 // need to remember this unsupported request so we respond appropriately on stop 1512 synchronized(this) { 1513 mFeatureUsers.add(f); 1514 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1515 // this gets used for per-pid dns when connected 1516 mNetRequestersPids[usedNetworkType].add(currentPid); 1517 } 1518 } 1519 if (DBG) log("startUsingNetworkFeature X: return -1 unsupported feature."); 1520 return -1; 1521 } 1522 } 1523 if (DBG) log("startUsingNetworkFeature X: return APN_TYPE_NOT_AVAILABLE"); 1524 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1525 } finally { 1526 if (DBG) { 1527 final long execTime = SystemClock.elapsedRealtime() - startTime; 1528 if (execTime > 250) { 1529 loge("startUsingNetworkFeature took too long: " + execTime + "ms"); 1530 } else { 1531 if (VDBG) log("startUsingNetworkFeature took " + execTime + "ms"); 1532 } 1533 } 1534 } 1535 } 1536 1537 // javadoc from interface 1538 public int stopUsingNetworkFeature(int networkType, String feature) { 1539 enforceChangePermission(); 1540 1541 int pid = getCallingPid(); 1542 int uid = getCallingUid(); 1543 1544 FeatureUser u = null; 1545 boolean found = false; 1546 1547 synchronized(this) { 1548 for (FeatureUser x : mFeatureUsers) { 1549 if (x.isSameUser(pid, uid, networkType, feature)) { 1550 u = x; 1551 found = true; 1552 break; 1553 } 1554 } 1555 } 1556 if (found && u != null) { 1557 if (VDBG) log("stopUsingNetworkFeature: X"); 1558 // stop regardless of how many other time this proc had called start 1559 return stopUsingNetworkFeature(u, true); 1560 } else { 1561 // none found! 1562 if (VDBG) log("stopUsingNetworkFeature: X not a live request, ignoring"); 1563 return 1; 1564 } 1565 } 1566 1567 private int stopUsingNetworkFeature(FeatureUser u, boolean ignoreDups) { 1568 int networkType = u.mNetworkType; 1569 String feature = u.mFeature; 1570 int pid = u.mPid; 1571 int uid = u.mUid; 1572 1573 NetworkStateTracker tracker = null; 1574 boolean callTeardown = false; // used to carry our decision outside of sync block 1575 1576 if (VDBG) { 1577 log("stopUsingNetworkFeature: net " + networkType + ": " + feature); 1578 } 1579 1580 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1581 if (DBG) { 1582 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1583 ", net is invalid"); 1584 } 1585 return -1; 1586 } 1587 1588 // need to link the mFeatureUsers list with the mNetRequestersPids state in this 1589 // sync block 1590 synchronized(this) { 1591 // check if this process still has an outstanding start request 1592 if (!mFeatureUsers.contains(u)) { 1593 if (VDBG) { 1594 log("stopUsingNetworkFeature: this process has no outstanding requests" + 1595 ", ignoring"); 1596 } 1597 return 1; 1598 } 1599 u.unlinkDeathRecipient(); 1600 mFeatureUsers.remove(mFeatureUsers.indexOf(u)); 1601 // If we care about duplicate requests, check for that here. 1602 // 1603 // This is done to support the extension of a request - the app 1604 // can request we start the network feature again and renew the 1605 // auto-shutoff delay. Normal "stop" calls from the app though 1606 // do not pay attention to duplicate requests - in effect the 1607 // API does not refcount and a single stop will counter multiple starts. 1608 if (ignoreDups == false) { 1609 for (FeatureUser x : mFeatureUsers) { 1610 if (x.isSameUser(u)) { 1611 if (VDBG) log("stopUsingNetworkFeature: dup is found, ignoring"); 1612 return 1; 1613 } 1614 } 1615 } 1616 1617 // TODO - move to individual network trackers 1618 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1619 1620 tracker = mNetTrackers[usedNetworkType]; 1621 if (tracker == null) { 1622 if (DBG) { 1623 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1624 " no known tracker for used net type " + usedNetworkType); 1625 } 1626 return -1; 1627 } 1628 if (usedNetworkType != networkType) { 1629 Integer currentPid = new Integer(pid); 1630 mNetRequestersPids[usedNetworkType].remove(currentPid); 1631 1632 final long token = Binder.clearCallingIdentity(); 1633 try { 1634 reassessPidDns(pid, true); 1635 } finally { 1636 Binder.restoreCallingIdentity(token); 1637 } 1638 flushVmDnsCache(); 1639 if (mNetRequestersPids[usedNetworkType].size() != 0) { 1640 if (VDBG) { 1641 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1642 " others still using it"); 1643 } 1644 return 1; 1645 } 1646 callTeardown = true; 1647 } else { 1648 if (DBG) { 1649 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1650 " not a known feature - dropping"); 1651 } 1652 } 1653 } 1654 1655 if (callTeardown) { 1656 if (DBG) { 1657 log("stopUsingNetworkFeature: teardown net " + networkType + ": " + feature); 1658 } 1659 tracker.teardown(); 1660 return 1; 1661 } else { 1662 return -1; 1663 } 1664 } 1665 1666 /** 1667 * Ensure that a network route exists to deliver traffic to the specified 1668 * host via the specified network interface. 1669 * @param networkType the type of the network over which traffic to the 1670 * specified host is to be routed 1671 * @param hostAddress the IP address of the host to which the route is 1672 * desired 1673 * @return {@code true} on success, {@code false} on failure 1674 */ 1675 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1676 enforceChangePermission(); 1677 if (mProtectedNetworks.contains(networkType)) { 1678 enforceConnectivityInternalPermission(); 1679 } 1680 1681 InetAddress addr; 1682 try { 1683 addr = InetAddress.getByAddress(hostAddress); 1684 } catch (UnknownHostException e) { 1685 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1686 return false; 1687 } 1688 1689 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1690 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1691 return false; 1692 } 1693 1694 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1695 if (nai == null) { 1696 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1697 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1698 } else { 1699 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1700 } 1701 return false; 1702 } 1703 1704 DetailedState netState; 1705 synchronized (nai) { 1706 netState = nai.networkInfo.getDetailedState(); 1707 } 1708 1709 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1710 if (VDBG) { 1711 log("requestRouteToHostAddress on down network " 1712 + "(" + networkType + ") - dropped" 1713 + " netState=" + netState); 1714 } 1715 return false; 1716 } 1717 1718 final int uid = Binder.getCallingUid(); 1719 final long token = Binder.clearCallingIdentity(); 1720 try { 1721 LinkProperties lp; 1722 int netId; 1723 synchronized (nai) { 1724 lp = nai.linkProperties; 1725 netId = nai.network.netId; 1726 } 1727 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1728 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1729 return ok; 1730 } finally { 1731 Binder.restoreCallingIdentity(token); 1732 } 1733 } 1734 1735 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1736 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1737 if (bestRoute == null) { 1738 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1739 } else { 1740 String iface = bestRoute.getInterface(); 1741 if (bestRoute.getGateway().equals(addr)) { 1742 // if there is no better route, add the implied hostroute for our gateway 1743 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1744 } else { 1745 // if we will connect to this through another route, add a direct route 1746 // to it's gateway 1747 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1748 } 1749 } 1750 if (VDBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); 1751 try { 1752 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1753 } catch (Exception e) { 1754 // never crash - catch them all 1755 if (DBG) loge("Exception trying to add a route: " + e); 1756 return false; 1757 } 1758 return true; 1759 } 1760 1761 public void setDataDependency(int networkType, boolean met) { 1762 enforceConnectivityInternalPermission(); 1763 1764 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1765 (met ? ENABLED : DISABLED), networkType)); 1766 } 1767 1768 private void handleSetDependencyMet(int networkType, boolean met) { 1769 if (mNetTrackers[networkType] != null) { 1770 if (DBG) { 1771 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1772 } 1773 mNetTrackers[networkType].setDependencyMet(met); 1774 } 1775 } 1776 1777 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1778 @Override 1779 public void onUidRulesChanged(int uid, int uidRules) { 1780 // caller is NPMS, since we only register with them 1781 if (LOGD_RULES) { 1782 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1783 } 1784 1785 synchronized (mRulesLock) { 1786 // skip update when we've already applied rules 1787 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1788 if (oldRules == uidRules) return; 1789 1790 mUidRules.put(uid, uidRules); 1791 } 1792 1793 // TODO: notify UID when it has requested targeted updates 1794 } 1795 1796 @Override 1797 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1798 // caller is NPMS, since we only register with them 1799 if (LOGD_RULES) { 1800 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1801 } 1802 1803 synchronized (mRulesLock) { 1804 mMeteredIfaces.clear(); 1805 for (String iface : meteredIfaces) { 1806 mMeteredIfaces.add(iface); 1807 } 1808 } 1809 } 1810 1811 @Override 1812 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1813 // caller is NPMS, since we only register with them 1814 if (LOGD_RULES) { 1815 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1816 } 1817 1818 // kick off connectivity change broadcast for active network, since 1819 // global background policy change is radical. 1820 final int networkType = mActiveDefaultNetwork; 1821 if (isNetworkTypeValid(networkType)) { 1822 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1823 if (tracker != null) { 1824 final NetworkInfo info = tracker.getNetworkInfo(); 1825 if (info != null && info.isConnected()) { 1826 sendConnectedBroadcast(info); 1827 } 1828 } 1829 } 1830 } 1831 }; 1832 1833 @Override 1834 public void setPolicyDataEnable(int networkType, boolean enabled) { 1835 // only someone like NPMS should only be calling us 1836 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1837 1838 mHandler.sendMessage(mHandler.obtainMessage( 1839 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1840 } 1841 1842 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1843 // TODO - handle this passing to factories 1844// if (isNetworkTypeValid(networkType)) { 1845// final NetworkStateTracker tracker = mNetTrackers[networkType]; 1846// if (tracker != null) { 1847// tracker.setPolicyDataEnable(enabled); 1848// } 1849// } 1850 } 1851 1852 private void enforceAccessPermission() { 1853 mContext.enforceCallingOrSelfPermission( 1854 android.Manifest.permission.ACCESS_NETWORK_STATE, 1855 "ConnectivityService"); 1856 } 1857 1858 private void enforceChangePermission() { 1859 mContext.enforceCallingOrSelfPermission( 1860 android.Manifest.permission.CHANGE_NETWORK_STATE, 1861 "ConnectivityService"); 1862 } 1863 1864 // TODO Make this a special check when it goes public 1865 private void enforceTetherChangePermission() { 1866 mContext.enforceCallingOrSelfPermission( 1867 android.Manifest.permission.CHANGE_NETWORK_STATE, 1868 "ConnectivityService"); 1869 } 1870 1871 private void enforceTetherAccessPermission() { 1872 mContext.enforceCallingOrSelfPermission( 1873 android.Manifest.permission.ACCESS_NETWORK_STATE, 1874 "ConnectivityService"); 1875 } 1876 1877 private void enforceConnectivityInternalPermission() { 1878 mContext.enforceCallingOrSelfPermission( 1879 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1880 "ConnectivityService"); 1881 } 1882 1883 /** 1884 * Handle a {@code DISCONNECTED} event. If this pertains to the non-active 1885 * network, we ignore it. If it is for the active network, we send out a 1886 * broadcast. But first, we check whether it might be possible to connect 1887 * to a different network. 1888 * @param info the {@code NetworkInfo} for the network 1889 */ 1890 private void handleDisconnect(NetworkInfo info) { 1891 1892 int prevNetType = info.getType(); 1893 1894 mNetTrackers[prevNetType].setTeardownRequested(false); 1895 int thisNetId = mNetTrackers[prevNetType].getNetwork().netId; 1896 1897 // Remove idletimer previously setup in {@code handleConnect} 1898// Already in place in new function. This is dead code. 1899// if (mNetConfigs[prevNetType].isDefault()) { 1900// removeDataActivityTracking(prevNetType); 1901// } 1902 1903 /* 1904 * If the disconnected network is not the active one, then don't report 1905 * this as a loss of connectivity. What probably happened is that we're 1906 * getting the disconnect for a network that we explicitly disabled 1907 * in accordance with network preference policies. 1908 */ 1909 if (!mNetConfigs[prevNetType].isDefault()) { 1910 List<Integer> pids = mNetRequestersPids[prevNetType]; 1911 for (Integer pid : pids) { 1912 // will remove them because the net's no longer connected 1913 // need to do this now as only now do we know the pids and 1914 // can properly null things that are no longer referenced. 1915 reassessPidDns(pid.intValue(), false); 1916 } 1917 } 1918 1919 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 1920 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1921 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1922 if (info.isFailover()) { 1923 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1924 info.setFailover(false); 1925 } 1926 if (info.getReason() != null) { 1927 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1928 } 1929 if (info.getExtraInfo() != null) { 1930 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1931 info.getExtraInfo()); 1932 } 1933 1934 if (mNetConfigs[prevNetType].isDefault()) { 1935 tryFailover(prevNetType); 1936 if (mActiveDefaultNetwork != -1) { 1937 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 1938 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 1939 } else { 1940 mDefaultInetConditionPublished = 0; // we're not connected anymore 1941 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 1942 } 1943 } 1944 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1945 1946 // Reset interface if no other connections are using the same interface 1947 boolean doReset = true; 1948 LinkProperties linkProperties = mNetTrackers[prevNetType].getLinkProperties(); 1949 if (linkProperties != null) { 1950 String oldIface = linkProperties.getInterfaceName(); 1951 if (TextUtils.isEmpty(oldIface) == false) { 1952 for (NetworkStateTracker networkStateTracker : mNetTrackers) { 1953 if (networkStateTracker == null) continue; 1954 NetworkInfo networkInfo = networkStateTracker.getNetworkInfo(); 1955 if (networkInfo.isConnected() && networkInfo.getType() != prevNetType) { 1956 LinkProperties l = networkStateTracker.getLinkProperties(); 1957 if (l == null) continue; 1958 if (oldIface.equals(l.getInterfaceName())) { 1959 doReset = false; 1960 break; 1961 } 1962 } 1963 } 1964 } 1965 } 1966 1967 // do this before we broadcast the change 1968// Already done in new function. This is dead code. 1969// handleConnectivityChange(prevNetType, doReset); 1970 1971 final Intent immediateIntent = new Intent(intent); 1972 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 1973 sendStickyBroadcast(immediateIntent); 1974 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 1975 /* 1976 * If the failover network is already connected, then immediately send 1977 * out a followup broadcast indicating successful failover 1978 */ 1979 if (mActiveDefaultNetwork != -1) { 1980 sendConnectedBroadcastDelayed(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(), 1981 getConnectivityChangeDelay()); 1982 } 1983 try { 1984// mNetd.removeNetwork(thisNetId); 1985 } catch (Exception e) { 1986 loge("Exception removing network: " + e); 1987 } finally { 1988// mNetTrackers[prevNetType].setNetId(INVALID_NET_ID); 1989 } 1990 } 1991 1992 private void tryFailover(int prevNetType) { 1993 /* 1994 * If this is a default network, check if other defaults are available. 1995 * Try to reconnect on all available and let them hash it out when 1996 * more than one connects. 1997 */ 1998 if (mNetConfigs[prevNetType].isDefault()) { 1999 if (mActiveDefaultNetwork == prevNetType) { 2000 if (DBG) { 2001 log("tryFailover: set mActiveDefaultNetwork=-1, prevNetType=" + prevNetType); 2002 } 2003 mActiveDefaultNetwork = -1; 2004 try { 2005 mNetd.clearDefaultNetId(); 2006 } catch (Exception e) { 2007 loge("Exception clearing default network :" + e); 2008 } 2009 } 2010 2011 // don't signal a reconnect for anything lower or equal priority than our 2012 // current connected default 2013 // TODO - don't filter by priority now - nice optimization but risky 2014// int currentPriority = -1; 2015// if (mActiveDefaultNetwork != -1) { 2016// currentPriority = mNetConfigs[mActiveDefaultNetwork].mPriority; 2017// } 2018 2019 for (int checkType=0; checkType <= ConnectivityManager.MAX_NETWORK_TYPE; checkType++) { 2020 if (checkType == prevNetType) continue; 2021 if (mNetConfigs[checkType] == null) continue; 2022 if (!mNetConfigs[checkType].isDefault()) continue; 2023 if (mNetTrackers[checkType] == null) continue; 2024 2025// Enabling the isAvailable() optimization caused mobile to not get 2026// selected if it was in the middle of error handling. Specifically 2027// a moble connection that took 30 seconds to complete the DEACTIVATE_DATA_CALL 2028// would not be available and we wouldn't get connected to anything. 2029// So removing the isAvailable() optimization below for now. TODO: This 2030// optimization should work and we need to investigate why it doesn't work. 2031// This could be related to how DEACTIVATE_DATA_CALL is reporting its 2032// complete before it is really complete. 2033 2034// if (!mNetTrackers[checkType].isAvailable()) continue; 2035 2036// if (currentPriority >= mNetConfigs[checkType].mPriority) continue; 2037 2038 NetworkStateTracker checkTracker = mNetTrackers[checkType]; 2039 NetworkInfo checkInfo = checkTracker.getNetworkInfo(); 2040 if (!checkInfo.isConnectedOrConnecting() || checkTracker.isTeardownRequested()) { 2041 checkInfo.setFailover(true); 2042 checkTracker.reconnect(); 2043 } 2044 if (DBG) log("Attempting to switch to " + checkInfo.getTypeName()); 2045 } 2046 } 2047 } 2048 2049 public void sendConnectedBroadcast(NetworkInfo info) { 2050 enforceConnectivityInternalPermission(); 2051 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2052 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 2053 } 2054 2055 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 2056 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2057 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 2058 } 2059 2060 private void sendInetConditionBroadcast(NetworkInfo info) { 2061 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 2062 } 2063 2064 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 2065 if (mLockdownTracker != null) { 2066 info = mLockdownTracker.augmentNetworkInfo(info); 2067 } 2068 2069 Intent intent = new Intent(bcastType); 2070 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2071 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2072 if (info.isFailover()) { 2073 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2074 info.setFailover(false); 2075 } 2076 if (info.getReason() != null) { 2077 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2078 } 2079 if (info.getExtraInfo() != null) { 2080 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2081 info.getExtraInfo()); 2082 } 2083 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2084 return intent; 2085 } 2086 2087 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 2088 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 2089 } 2090 2091 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 2092 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 2093 } 2094 2095 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 2096 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 2097 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 2098 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 2099 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 2100 final long ident = Binder.clearCallingIdentity(); 2101 try { 2102 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 2103 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 2104 } finally { 2105 Binder.restoreCallingIdentity(ident); 2106 } 2107 } 2108 2109 private void sendStickyBroadcast(Intent intent) { 2110 synchronized(this) { 2111 if (!mSystemReady) { 2112 mInitialBroadcast = new Intent(intent); 2113 } 2114 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2115 if (VDBG) { 2116 log("sendStickyBroadcast: action=" + intent.getAction()); 2117 } 2118 2119 final long ident = Binder.clearCallingIdentity(); 2120 try { 2121 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2122 } finally { 2123 Binder.restoreCallingIdentity(ident); 2124 } 2125 } 2126 } 2127 2128 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 2129 if (delayMs <= 0) { 2130 sendStickyBroadcast(intent); 2131 } else { 2132 if (VDBG) { 2133 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 2134 + intent.getAction()); 2135 } 2136 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2137 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 2138 } 2139 } 2140 2141 void systemReady() { 2142 // start network sampling .. 2143 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 2144 intent.setPackage(mContext.getPackageName()); 2145 2146 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 2147 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 2148 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 2149 2150 if (mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_WIFI)) { 2151 mCaptivePortalTracker = CaptivePortalTracker.makeCaptivePortalTracker(mContext, this); 2152 } 2153 loadGlobalProxy(); 2154 2155 synchronized(this) { 2156 mSystemReady = true; 2157 if (mInitialBroadcast != null) { 2158 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 2159 mInitialBroadcast = null; 2160 } 2161 } 2162 // load the global proxy at startup 2163 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 2164 2165 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 2166 // for user to unlock device. 2167 if (!updateLockdownVpn()) { 2168 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 2169 mContext.registerReceiver(mUserPresentReceiver, filter); 2170 } 2171 } 2172 2173 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 2174 @Override 2175 public void onReceive(Context context, Intent intent) { 2176 // Try creating lockdown tracker, since user present usually means 2177 // unlocked keystore. 2178 if (updateLockdownVpn()) { 2179 mContext.unregisterReceiver(this); 2180 } 2181 } 2182 }; 2183 2184 private boolean isNewNetTypePreferredOverCurrentNetType(int type) { 2185 if (((type != mNetworkPreference) 2186 && (mNetConfigs[mActiveDefaultNetwork].priority > mNetConfigs[type].priority)) 2187 || (mNetworkPreference == mActiveDefaultNetwork)) { 2188 return false; 2189 } 2190 return true; 2191 } 2192 2193 private void handleConnect(NetworkInfo info) { 2194 final int newNetType = info.getType(); 2195 2196 // snapshot isFailover, because sendConnectedBroadcast() resets it 2197 boolean isFailover = info.isFailover(); 2198 final NetworkStateTracker thisNet = mNetTrackers[newNetType]; 2199 final String thisIface = thisNet.getLinkProperties().getInterfaceName(); 2200 2201 if (VDBG) { 2202 log("handleConnect: E newNetType=" + newNetType + " thisIface=" + thisIface 2203 + " isFailover" + isFailover); 2204 } 2205 2206 // if this is a default net and other default is running 2207 // kill the one not preferred 2208 if (mNetConfigs[newNetType].isDefault()) { 2209 if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != newNetType) { 2210 if (isNewNetTypePreferredOverCurrentNetType(newNetType)) { 2211 String teardownPolicy = SystemProperties.get("net.teardownPolicy"); 2212 if (TextUtils.equals(teardownPolicy, "keep") == false) { 2213 // tear down the other 2214 NetworkStateTracker otherNet = 2215 mNetTrackers[mActiveDefaultNetwork]; 2216 if (DBG) { 2217 log("Policy requires " + otherNet.getNetworkInfo().getTypeName() + 2218 " teardown"); 2219 } 2220 if (!teardown(otherNet)) { 2221 loge("Network declined teardown request"); 2222 teardown(thisNet); 2223 return; 2224 } 2225 } else { 2226 //TODO - remove 2227 loge("network teardown skipped due to net.teardownPolicy setting"); 2228 } 2229 } else { 2230 // don't accept this one 2231 if (VDBG) { 2232 log("Not broadcasting CONNECT_ACTION " + 2233 "to torn down network " + info.getTypeName()); 2234 } 2235 teardown(thisNet); 2236 return; 2237 } 2238 } 2239 int thisNetId = nextNetId(); 2240 thisNet.setNetId(thisNetId); 2241 try { 2242// mNetd.createNetwork(thisNetId, thisIface); 2243 } catch (Exception e) { 2244 loge("Exception creating network :" + e); 2245 teardown(thisNet); 2246 return; 2247 } 2248// Already in place in new function. This is dead code. 2249// setupDataActivityTracking(newNetType); 2250 synchronized (ConnectivityService.this) { 2251 // have a new default network, release the transition wakelock in a second 2252 // if it's held. The second pause is to allow apps to reconnect over the 2253 // new network 2254 if (mNetTransitionWakeLock.isHeld()) { 2255 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2256 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 2257 mNetTransitionWakeLockSerialNumber, 0), 2258 1000); 2259 } 2260 } 2261 mActiveDefaultNetwork = newNetType; 2262 try { 2263 mNetd.setDefaultNetId(thisNetId); 2264 } catch (Exception e) { 2265 loge("Exception setting default network :" + e); 2266 } 2267 // this will cause us to come up initially as unconnected and switching 2268 // to connected after our normal pause unless somebody reports us as reall 2269 // disconnected 2270 mDefaultInetConditionPublished = 0; 2271 mDefaultConnectionSequence++; 2272 mInetConditionChangeInFlight = false; 2273 // Don't do this - if we never sign in stay, grey 2274 //reportNetworkCondition(mActiveDefaultNetwork, 100); 2275 updateNetworkSettings(thisNet); 2276 } else { 2277 int thisNetId = nextNetId(); 2278 thisNet.setNetId(thisNetId); 2279 try { 2280// mNetd.createNetwork(thisNetId, thisIface); 2281 } catch (Exception e) { 2282 loge("Exception creating network :" + e); 2283 teardown(thisNet); 2284 return; 2285 } 2286 } 2287 thisNet.setTeardownRequested(false); 2288// Already in place in new function. This is dead code. 2289// updateMtuSizeSettings(thisNet); 2290// handleConnectivityChange(newNetType, false); 2291 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 2292 2293 // notify battery stats service about this network 2294 if (thisIface != null) { 2295 try { 2296 BatteryStatsService.getService().noteNetworkInterfaceType(thisIface, newNetType); 2297 } catch (RemoteException e) { 2298 // ignored; service lives in system_server 2299 } 2300 } 2301 } 2302 2303 /** @hide */ 2304 @Override 2305 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 2306 enforceConnectivityInternalPermission(); 2307 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 2308// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 2309 } 2310 2311 /** 2312 * Setup data activity tracking for the given network. 2313 * 2314 * Every {@code setupDataActivityTracking} should be paired with a 2315 * {@link #removeDataActivityTracking} for cleanup. 2316 */ 2317 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 2318 final String iface = networkAgent.linkProperties.getInterfaceName(); 2319 2320 final int timeout; 2321 int type = ConnectivityManager.TYPE_NONE; 2322 2323 if (networkAgent.networkCapabilities.hasTransport( 2324 NetworkCapabilities.TRANSPORT_CELLULAR)) { 2325 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2326 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 2327 5); 2328 type = ConnectivityManager.TYPE_MOBILE; 2329 } else if (networkAgent.networkCapabilities.hasTransport( 2330 NetworkCapabilities.TRANSPORT_WIFI)) { 2331 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2332 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 2333 0); 2334 type = ConnectivityManager.TYPE_WIFI; 2335 } else { 2336 // do not track any other networks 2337 timeout = 0; 2338 } 2339 2340 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 2341 try { 2342 mNetd.addIdleTimer(iface, timeout, type); 2343 } catch (Exception e) { 2344 // You shall not crash! 2345 loge("Exception in setupDataActivityTracking " + e); 2346 } 2347 } 2348 } 2349 2350 /** 2351 * Remove data activity tracking when network disconnects. 2352 */ 2353 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 2354 final String iface = networkAgent.linkProperties.getInterfaceName(); 2355 final NetworkCapabilities caps = networkAgent.networkCapabilities; 2356 2357 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 2358 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 2359 try { 2360 // the call fails silently if no idletimer setup for this interface 2361 mNetd.removeIdleTimer(iface); 2362 } catch (Exception e) { 2363 loge("Exception in removeDataActivityTracking " + e); 2364 } 2365 } 2366 } 2367 2368 /** 2369 * After a change in the connectivity state of a network. We're mainly 2370 * concerned with making sure that the list of DNS servers is set up 2371 * according to which networks are connected, and ensuring that the 2372 * right routing table entries exist. 2373 * 2374 * TODO - delete when we're sure all this functionallity is captured. 2375 */ 2376 /* 2377 private void handleConnectivityChange(int netType, LinkProperties curLp, boolean doReset) { 2378 int resetMask = doReset ? NetworkUtils.RESET_ALL_ADDRESSES : 0; 2379 boolean exempt = ConnectivityManager.isNetworkTypeExempt(netType); 2380 if (VDBG) { 2381 log("handleConnectivityChange: netType=" + netType + " doReset=" + doReset 2382 + " resetMask=" + resetMask); 2383 } 2384 2385 // If a non-default network is enabled, add the host routes that 2386 // will allow it's DNS servers to be accessed. 2387 handleDnsConfigurationChange(netType); 2388 2389 LinkProperties newLp = null; 2390 2391 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2392 newLp = mNetTrackers[netType].getLinkProperties(); 2393 if (VDBG) { 2394 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2395 " doReset=" + doReset + " resetMask=" + resetMask + 2396 "\n curLp=" + curLp + 2397 "\n newLp=" + newLp); 2398 } 2399 2400 if (curLp != null) { 2401 if (curLp.isIdenticalInterfaceName(newLp)) { 2402 CompareResult<LinkAddress> car = curLp.compareAddresses(newLp); 2403 if ((car.removed.size() != 0) || (car.added.size() != 0)) { 2404 for (LinkAddress linkAddr : car.removed) { 2405 if (linkAddr.getAddress() instanceof Inet4Address) { 2406 resetMask |= NetworkUtils.RESET_IPV4_ADDRESSES; 2407 } 2408 if (linkAddr.getAddress() instanceof Inet6Address) { 2409 resetMask |= NetworkUtils.RESET_IPV6_ADDRESSES; 2410 } 2411 } 2412 if (DBG) { 2413 log("handleConnectivityChange: addresses changed" + 2414 " linkProperty[" + netType + "]:" + " resetMask=" + resetMask + 2415 "\n car=" + car); 2416 } 2417 } else { 2418 if (VDBG) { 2419 log("handleConnectivityChange: addresses are the same reset per" + 2420 " doReset linkProperty[" + netType + "]:" + 2421 " resetMask=" + resetMask); 2422 } 2423 } 2424 } else { 2425 resetMask = NetworkUtils.RESET_ALL_ADDRESSES; 2426 if (DBG) { 2427 log("handleConnectivityChange: interface not not equivalent reset both" + 2428 " linkProperty[" + netType + "]:" + 2429 " resetMask=" + resetMask); 2430 } 2431 } 2432 } 2433 if (mNetConfigs[netType].isDefault()) { 2434 handleApplyDefaultProxy(newLp.getHttpProxy()); 2435 } 2436 } else { 2437 if (VDBG) { 2438 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2439 " doReset=" + doReset + " resetMask=" + resetMask + 2440 "\n curLp=" + curLp + 2441 "\n newLp= null"); 2442 } 2443 } 2444 mCurrentLinkProperties[netType] = newLp; 2445 boolean resetDns = updateRoutes(newLp, curLp, mNetConfigs[netType].isDefault(), exempt, 2446 mNetTrackers[netType].getNetwork().netId); 2447 2448 if (resetMask != 0 || resetDns) { 2449 if (VDBG) log("handleConnectivityChange: resetting"); 2450 if (curLp != null) { 2451 if (VDBG) log("handleConnectivityChange: resetting curLp=" + curLp); 2452 for (String iface : curLp.getAllInterfaceNames()) { 2453 if (TextUtils.isEmpty(iface) == false) { 2454 if (resetMask != 0) { 2455 if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")"); 2456 NetworkUtils.resetConnections(iface, resetMask); 2457 2458 // Tell VPN the interface is down. It is a temporary 2459 // but effective fix to make VPN aware of the change. 2460 if ((resetMask & NetworkUtils.RESET_IPV4_ADDRESSES) != 0) { 2461 synchronized(mVpns) { 2462 for (int i = 0; i < mVpns.size(); i++) { 2463 mVpns.valueAt(i).interfaceStatusChanged(iface, false); 2464 } 2465 } 2466 } 2467 } 2468 } else { 2469 loge("Can't reset connection for type "+netType); 2470 } 2471 } 2472 if (resetDns) { 2473 flushVmDnsCache(); 2474 if (VDBG) log("resetting DNS cache for type " + netType); 2475 try { 2476 mNetd.flushNetworkDnsCache(mNetTrackers[netType].getNetwork().netId); 2477 } catch (Exception e) { 2478 // never crash - catch them all 2479 if (DBG) loge("Exception resetting dns cache: " + e); 2480 } 2481 } 2482 } 2483 } 2484 2485 // TODO: Temporary notifying upstread change to Tethering. 2486 // @see bug/4455071 2487 // Notify TetheringService if interface name has been changed. 2488 if (TextUtils.equals(mNetTrackers[netType].getNetworkInfo().getReason(), 2489 PhoneConstants.REASON_LINK_PROPERTIES_CHANGED)) { 2490 if (isTetheringSupported()) { 2491 mTethering.handleTetherIfaceChange(); 2492 } 2493 } 2494 } 2495 */ 2496 2497 /** 2498 * Add and remove routes using the old properties (null if not previously connected), 2499 * new properties (null if becoming disconnected). May even be double null, which 2500 * is a noop. 2501 * Uses isLinkDefault to determine if default routes should be set or conversely if 2502 * host routes should be set to the dns servers 2503 * returns a boolean indicating the routes changed 2504 */ 2505 /* 2506 private boolean updateRoutes(LinkProperties newLp, LinkProperties curLp, 2507 boolean isLinkDefault, boolean exempt, int netId) { 2508 Collection<RouteInfo> routesToAdd = null; 2509 CompareResult<InetAddress> dnsDiff = new CompareResult<InetAddress>(); 2510 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 2511 if (curLp != null) { 2512 // check for the delta between the current set and the new 2513 routeDiff = curLp.compareAllRoutes(newLp); 2514 dnsDiff = curLp.compareDnses(newLp); 2515 } else if (newLp != null) { 2516 routeDiff.added = newLp.getAllRoutes(); 2517 dnsDiff.added = newLp.getDnsServers(); 2518 } 2519 2520 boolean routesChanged = (routeDiff.removed.size() != 0 || routeDiff.added.size() != 0); 2521 2522 for (RouteInfo r : routeDiff.removed) { 2523 if (isLinkDefault || ! r.isDefaultRoute()) { 2524 if (VDBG) log("updateRoutes: default remove route r=" + r); 2525 removeRoute(curLp, r, TO_DEFAULT_TABLE, netId); 2526 } 2527 if (isLinkDefault == false) { 2528 // remove from a secondary route table 2529 removeRoute(curLp, r, TO_SECONDARY_TABLE, netId); 2530 } 2531 } 2532 2533 for (RouteInfo r : routeDiff.added) { 2534 if (isLinkDefault || ! r.isDefaultRoute()) { 2535 addRoute(newLp, r, TO_DEFAULT_TABLE, exempt, netId); 2536 } else { 2537 // add to a secondary route table 2538 addRoute(newLp, r, TO_SECONDARY_TABLE, UNEXEMPT, netId); 2539 2540 // many radios add a default route even when we don't want one. 2541 // remove the default route unless somebody else has asked for it 2542 String ifaceName = newLp.getInterfaceName(); 2543 synchronized (mRoutesLock) { 2544 if (!TextUtils.isEmpty(ifaceName) && !mAddedRoutes.contains(r)) { 2545 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 2546 try { 2547 mNetd.removeRoute(netId, r); 2548 } catch (Exception e) { 2549 // never crash - catch them all 2550 if (DBG) loge("Exception trying to remove a route: " + e); 2551 } 2552 } 2553 } 2554 } 2555 } 2556 2557 return routesChanged; 2558 } 2559 */ 2560 2561 /** 2562 * Reads the network specific MTU size from reources. 2563 * and set it on it's iface. 2564 */ 2565 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 2566 final String iface = newLp.getInterfaceName(); 2567 final int mtu = newLp.getMtu(); 2568 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 2569 if (VDBG) log("identical MTU - not setting"); 2570 return; 2571 } 2572 2573 if (mtu < 68 || mtu > 10000) { 2574 loge("Unexpected mtu value: " + mtu + ", " + iface); 2575 return; 2576 } 2577 2578 try { 2579 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 2580 mNetd.setMtu(iface, mtu); 2581 } catch (Exception e) { 2582 Slog.e(TAG, "exception in setMtu()" + e); 2583 } 2584 } 2585 2586 /** 2587 * Reads the network specific TCP buffer sizes from SystemProperties 2588 * net.tcp.buffersize.[default|wifi|umts|edge|gprs] and set them for system 2589 * wide use 2590 */ 2591 private void updateNetworkSettings(NetworkStateTracker nt) { 2592 String key = nt.getTcpBufferSizesPropName(); 2593 String bufferSizes = key == null ? null : SystemProperties.get(key); 2594 2595 if (TextUtils.isEmpty(bufferSizes)) { 2596 if (VDBG) log(key + " not found in system properties. Using defaults"); 2597 2598 // Setting to default values so we won't be stuck to previous values 2599 key = "net.tcp.buffersize.default"; 2600 bufferSizes = SystemProperties.get(key); 2601 } 2602 2603 // Set values in kernel 2604 if (bufferSizes.length() != 0) { 2605 if (VDBG) { 2606 log("Setting TCP values: [" + bufferSizes 2607 + "] which comes from [" + key + "]"); 2608 } 2609 setBufferSize(bufferSizes); 2610 } 2611 2612 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 2613 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 2614 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 2615 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 2616 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 2617 if (rwndValue != 0) { 2618 SystemProperties.set(sysctlKey, rwndValue.toString()); 2619 } 2620 } 2621 2622 /** 2623 * Writes TCP buffer sizes to /sys/kernel/ipv4/tcp_[r/w]mem_[min/def/max] 2624 * which maps to /proc/sys/net/ipv4/tcp_rmem and tcpwmem 2625 * 2626 * @param bufferSizes in the format of "readMin, readInitial, readMax, 2627 * writeMin, writeInitial, writeMax" 2628 */ 2629 private void setBufferSize(String bufferSizes) { 2630 try { 2631 String[] values = bufferSizes.split(","); 2632 2633 if (values.length == 6) { 2634 final String prefix = "/sys/kernel/ipv4/tcp_"; 2635 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 2636 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 2637 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 2638 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 2639 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 2640 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 2641 } else { 2642 loge("Invalid buffersize string: " + bufferSizes); 2643 } 2644 } catch (IOException e) { 2645 loge("Can't set tcp buffer sizes:" + e); 2646 } 2647 } 2648 2649 /** 2650 * Adjust the per-process dns entries (net.dns<x>.<pid>) based 2651 * on the highest priority active net which this process requested. 2652 * If there aren't any, clear it out 2653 */ 2654 private void reassessPidDns(int pid, boolean doBump) 2655 { 2656 if (VDBG) log("reassessPidDns for pid " + pid); 2657 Integer myPid = new Integer(pid); 2658 for(int i : mPriorityList) { 2659 if (mNetConfigs[i].isDefault()) { 2660 continue; 2661 } 2662 NetworkStateTracker nt = mNetTrackers[i]; 2663 if (nt.getNetworkInfo().isConnected() && 2664 !nt.isTeardownRequested()) { 2665 LinkProperties p = nt.getLinkProperties(); 2666 if (p == null) continue; 2667 if (mNetRequestersPids[i].contains(myPid)) { 2668 try { 2669 // TODO: Reimplement this via local variable in bionic. 2670 // mNetd.setDnsNetworkForPid(nt.getNetwork().netId, pid); 2671 } catch (Exception e) { 2672 Slog.e(TAG, "exception reasseses pid dns: " + e); 2673 } 2674 return; 2675 } 2676 } 2677 } 2678 // nothing found - delete 2679 try { 2680 // TODO: Reimplement this via local variable in bionic. 2681 // mNetd.clearDnsNetworkForPid(pid); 2682 } catch (Exception e) { 2683 Slog.e(TAG, "exception clear interface from pid: " + e); 2684 } 2685 } 2686 2687 private void flushVmDnsCache() { 2688 /* 2689 * Tell the VMs to toss their DNS caches 2690 */ 2691 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 2692 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 2693 /* 2694 * Connectivity events can happen before boot has completed ... 2695 */ 2696 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2697 final long ident = Binder.clearCallingIdentity(); 2698 try { 2699 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 2700 } finally { 2701 Binder.restoreCallingIdentity(ident); 2702 } 2703 } 2704 2705 // Caller must grab mDnsLock. 2706 private void updateDnsLocked(String network, int netId, 2707 Collection<InetAddress> dnses, String domains) { 2708 int last = 0; 2709 if (dnses.size() == 0 && mDefaultDns != null) { 2710 dnses = new ArrayList(); 2711 dnses.add(mDefaultDns); 2712 if (DBG) { 2713 loge("no dns provided for " + network + " - using " + mDefaultDns.getHostAddress()); 2714 } 2715 } 2716 2717 try { 2718 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), domains); 2719 2720 for (InetAddress dns : dnses) { 2721 ++last; 2722 String key = "net.dns" + last; 2723 String value = dns.getHostAddress(); 2724 SystemProperties.set(key, value); 2725 } 2726 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 2727 String key = "net.dns" + i; 2728 SystemProperties.set(key, ""); 2729 } 2730 mNumDnsEntries = last; 2731 } catch (Exception e) { 2732 loge("exception setting default dns interface: " + e); 2733 } 2734 } 2735 2736 private void handleDnsConfigurationChange(int netType) { 2737 // add default net's dns entries 2738 NetworkStateTracker nt = mNetTrackers[netType]; 2739 if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) { 2740 LinkProperties p = nt.getLinkProperties(); 2741 if (p == null) return; 2742 Collection<InetAddress> dnses = p.getDnsServers(); 2743 int netId = nt.getNetwork().netId; 2744 if (mNetConfigs[netType].isDefault()) { 2745 String network = nt.getNetworkInfo().getTypeName(); 2746 synchronized (mDnsLock) { 2747 updateDnsLocked(network, netId, dnses, p.getDomains()); 2748 } 2749 } else { 2750 try { 2751 mNetd.setDnsServersForNetwork(netId, 2752 NetworkUtils.makeStrings(dnses), p.getDomains()); 2753 } catch (Exception e) { 2754 if (DBG) loge("exception setting dns servers: " + e); 2755 } 2756 // set per-pid dns for attached secondary nets 2757 List<Integer> pids = mNetRequestersPids[netType]; 2758 for (Integer pid : pids) { 2759 try { 2760 // TODO: Reimplement this via local variable in bionic. 2761 // mNetd.setDnsNetworkForPid(netId, pid); 2762 } catch (Exception e) { 2763 Slog.e(TAG, "exception setting interface for pid: " + e); 2764 } 2765 } 2766 } 2767 flushVmDnsCache(); 2768 } 2769 } 2770 2771 @Override 2772 public int getRestoreDefaultNetworkDelay(int networkType) { 2773 String restoreDefaultNetworkDelayStr = SystemProperties.get( 2774 NETWORK_RESTORE_DELAY_PROP_NAME); 2775 if(restoreDefaultNetworkDelayStr != null && 2776 restoreDefaultNetworkDelayStr.length() != 0) { 2777 try { 2778 return Integer.valueOf(restoreDefaultNetworkDelayStr); 2779 } catch (NumberFormatException e) { 2780 } 2781 } 2782 // if the system property isn't set, use the value for the apn type 2783 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 2784 2785 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 2786 (mNetConfigs[networkType] != null)) { 2787 ret = mNetConfigs[networkType].restoreTime; 2788 } 2789 return ret; 2790 } 2791 2792 @Override 2793 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 2794 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 2795 if (mContext.checkCallingOrSelfPermission( 2796 android.Manifest.permission.DUMP) 2797 != PackageManager.PERMISSION_GRANTED) { 2798 pw.println("Permission Denial: can't dump ConnectivityService " + 2799 "from from pid=" + Binder.getCallingPid() + ", uid=" + 2800 Binder.getCallingUid()); 2801 return; 2802 } 2803 2804 pw.println("NetworkFactories for:"); 2805 pw.increaseIndent(); 2806 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2807 pw.println(nfi.name); 2808 } 2809 pw.decreaseIndent(); 2810 pw.println(); 2811 2812 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 2813 pw.print("Active default network: "); 2814 if (defaultNai == null) { 2815 pw.println("none"); 2816 } else { 2817 pw.println(defaultNai.network.netId); 2818 } 2819 pw.println(); 2820 2821 pw.println("Current Networks:"); 2822 pw.increaseIndent(); 2823 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2824 pw.println(nai.toString()); 2825 pw.increaseIndent(); 2826 pw.println("Requests:"); 2827 pw.increaseIndent(); 2828 for (int i = 0; i < nai.networkRequests.size(); i++) { 2829 pw.println(nai.networkRequests.valueAt(i).toString()); 2830 } 2831 pw.decreaseIndent(); 2832 pw.println("Lingered:"); 2833 pw.increaseIndent(); 2834 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 2835 pw.decreaseIndent(); 2836 pw.decreaseIndent(); 2837 } 2838 pw.decreaseIndent(); 2839 pw.println(); 2840 2841 pw.println("Network Requests:"); 2842 pw.increaseIndent(); 2843 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2844 pw.println(nri.toString()); 2845 } 2846 pw.println(); 2847 pw.decreaseIndent(); 2848 2849 synchronized (this) { 2850 pw.println("NetworkTranstionWakeLock is currently " + 2851 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 2852 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 2853 } 2854 pw.println(); 2855 2856 mTethering.dump(fd, pw, args); 2857 2858 if (mInetLog != null) { 2859 pw.println(); 2860 pw.println("Inet condition reports:"); 2861 pw.increaseIndent(); 2862 for(int i = 0; i < mInetLog.size(); i++) { 2863 pw.println(mInetLog.get(i)); 2864 } 2865 pw.decreaseIndent(); 2866 } 2867 } 2868 2869 // must be stateless - things change under us. 2870 private class NetworkStateTrackerHandler extends Handler { 2871 public NetworkStateTrackerHandler(Looper looper) { 2872 super(looper); 2873 } 2874 2875 @Override 2876 public void handleMessage(Message msg) { 2877 NetworkInfo info; 2878 switch (msg.what) { 2879 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 2880 handleAsyncChannelHalfConnect(msg); 2881 break; 2882 } 2883 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 2884 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2885 if (nai != null) nai.asyncChannel.disconnect(); 2886 break; 2887 } 2888 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 2889 handleAsyncChannelDisconnected(msg); 2890 break; 2891 } 2892 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 2893 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2894 if (nai == null) { 2895 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 2896 } else { 2897 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 2898 } 2899 break; 2900 } 2901 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 2902 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2903 if (nai == null) { 2904 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 2905 } else { 2906 if (VDBG) log("Update of Linkproperties for " + nai.name()); 2907 LinkProperties oldLp = nai.linkProperties; 2908 synchronized (nai) { 2909 nai.linkProperties = (LinkProperties)msg.obj; 2910 } 2911 updateLinkProperties(nai, oldLp); 2912 } 2913 break; 2914 } 2915 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 2916 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2917 if (nai == null) { 2918 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 2919 break; 2920 } 2921 info = (NetworkInfo) msg.obj; 2922 updateNetworkInfo(nai, info); 2923 break; 2924 } 2925 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 2926 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2927 if (nai == null) { 2928 loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); 2929 break; 2930 } 2931 Integer score = (Integer) msg.obj; 2932 if (score != null) updateNetworkScore(nai, score.intValue()); 2933 break; 2934 } 2935 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 2936 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2937 if (nai == null) { 2938 loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); 2939 break; 2940 } 2941 try { 2942 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2943 } catch (RemoteException e) { 2944 } 2945 break; 2946 } 2947 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 2948 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2949 if (nai == null) { 2950 loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); 2951 break; 2952 } 2953 try { 2954 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2955 } catch (RemoteException e) { 2956 } 2957 break; 2958 } 2959 case NetworkMonitor.EVENT_NETWORK_VALIDATED: { 2960 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2961 handleConnectionValidated(nai); 2962 break; 2963 } 2964 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2965 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2966 handleLingerComplete(nai); 2967 break; 2968 } 2969 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2970 if (msg.arg1 == 0) { 2971 setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); 2972 } else { 2973 NetworkAgentInfo nai = mNetworkForNetId.get(msg.arg2); 2974 if (nai == null) { 2975 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2976 break; 2977 } 2978 setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), 2979 nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); 2980 } 2981 break; 2982 } 2983 case NetworkStateTracker.EVENT_STATE_CHANGED: { 2984 info = (NetworkInfo) msg.obj; 2985 NetworkInfo.State state = info.getState(); 2986 2987 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 2988 (state == NetworkInfo.State.DISCONNECTED) || 2989 (state == NetworkInfo.State.SUSPENDED)) { 2990 log("ConnectivityChange for " + 2991 info.getTypeName() + ": " + 2992 state + "/" + info.getDetailedState()); 2993 } 2994 2995 // Since mobile has the notion of a network/apn that can be used for 2996 // provisioning we need to check every time we're connected as 2997 // CaptiveProtalTracker won't detected it because DCT doesn't report it 2998 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 2999 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 3000 // is received by MDST and sent here as EVENT_STATE_CHANGED. 3001 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 3002 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 3003 Settings.Global.DEVICE_PROVISIONED, 0)) 3004 && (((state == NetworkInfo.State.CONNECTED) 3005 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 3006 || info.isConnectedToProvisioningNetwork())) { 3007 log("ConnectivityChange checkMobileProvisioning for" 3008 + " TYPE_MOBILE or ProvisioningNetwork"); 3009 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 3010 } 3011 3012 EventLogTags.writeConnectivityStateChanged( 3013 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 3014 3015 if (info.isConnectedToProvisioningNetwork()) { 3016 /** 3017 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 3018 * for now its an in between network, its a network that 3019 * is actually a default network but we don't want it to be 3020 * announced as such to keep background applications from 3021 * trying to use it. It turns out that some still try so we 3022 * take the additional step of clearing any default routes 3023 * to the link that may have incorrectly setup by the lower 3024 * levels. 3025 */ 3026 LinkProperties lp = getLinkPropertiesForTypeInternal(info.getType()); 3027 if (DBG) { 3028 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 3029 } 3030 3031 // Clear any default routes setup by the radio so 3032 // any activity by applications trying to use this 3033 // connection will fail until the provisioning network 3034 // is enabled. 3035 /* 3036 for (RouteInfo r : lp.getRoutes()) { 3037 removeRoute(lp, r, TO_DEFAULT_TABLE, 3038 mNetTrackers[info.getType()].getNetwork().netId); 3039 } 3040 */ 3041 } else if (state == NetworkInfo.State.DISCONNECTED) { 3042 } else if (state == NetworkInfo.State.SUSPENDED) { 3043 } else if (state == NetworkInfo.State.CONNECTED) { 3044 // handleConnect(info); 3045 } 3046 if (mLockdownTracker != null) { 3047 mLockdownTracker.onNetworkInfoChanged(info); 3048 } 3049 break; 3050 } 3051 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 3052 info = (NetworkInfo) msg.obj; 3053 // TODO: Temporary allowing network configuration 3054 // change not resetting sockets. 3055 // @see bug/4455071 3056 /* 3057 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 3058 false); 3059 */ 3060 break; 3061 } 3062 case NetworkStateTracker.EVENT_NETWORK_SUBTYPE_CHANGED: { 3063 info = (NetworkInfo) msg.obj; 3064 int type = info.getType(); 3065 if (mNetConfigs[type].isDefault()) updateNetworkSettings(mNetTrackers[type]); 3066 break; 3067 } 3068 } 3069 } 3070 } 3071 3072 private void handleAsyncChannelHalfConnect(Message msg) { 3073 AsyncChannel ac = (AsyncChannel) msg.obj; 3074 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 3075 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3076 if (VDBG) log("NetworkFactory connected"); 3077 // A network factory has connected. Send it all current NetworkRequests. 3078 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3079 if (nri.isRequest == false) continue; 3080 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 3081 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 3082 (nai != null ? nai.currentScore : 0), 0, nri.request); 3083 } 3084 } else { 3085 loge("Error connecting NetworkFactory"); 3086 mNetworkFactoryInfos.remove(msg.obj); 3087 } 3088 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 3089 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3090 if (VDBG) log("NetworkAgent connected"); 3091 // A network agent has requested a connection. Establish the connection. 3092 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 3093 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 3094 } else { 3095 loge("Error connecting NetworkAgent"); 3096 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 3097 if (nai != null) { 3098 synchronized (mNetworkForNetId) { 3099 mNetworkForNetId.remove(nai.network.netId); 3100 } 3101 mLegacyTypeTracker.remove(nai); 3102 } 3103 } 3104 } 3105 } 3106 private void handleAsyncChannelDisconnected(Message msg) { 3107 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3108 if (nai != null) { 3109 if (DBG) { 3110 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 3111 } 3112 // A network agent has disconnected. 3113 // Tell netd to clean up the configuration for this network 3114 // (routing rules, DNS, etc). 3115 try { 3116 mNetd.removeNetwork(nai.network.netId); 3117 } catch (Exception e) { 3118 loge("Exception removing network: " + e); 3119 } 3120 // TODO - if we move the logic to the network agent (have them disconnect 3121 // because they lost all their requests or because their score isn't good) 3122 // then they would disconnect organically, report their new state and then 3123 // disconnect the channel. 3124 if (nai.networkInfo.isConnected()) { 3125 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 3126 null, null); 3127 } 3128 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 3129 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 3130 mNetworkAgentInfos.remove(msg.replyTo); 3131 updateClat(null, nai.linkProperties, nai); 3132 mLegacyTypeTracker.remove(nai); 3133 synchronized (mNetworkForNetId) { 3134 mNetworkForNetId.remove(nai.network.netId); 3135 } 3136 // Since we've lost the network, go through all the requests that 3137 // it was satisfying and see if any other factory can satisfy them. 3138 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 3139 for (int i = 0; i < nai.networkRequests.size(); i++) { 3140 NetworkRequest request = nai.networkRequests.valueAt(i); 3141 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 3142 if (VDBG) { 3143 log(" checking request " + request + ", currentNetwork = " + 3144 (currentNetwork != null ? currentNetwork.name() : "null")); 3145 } 3146 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 3147 mNetworkForRequestId.remove(request.requestId); 3148 sendUpdatedScoreToFactories(request, 0); 3149 NetworkAgentInfo alternative = null; 3150 for (Map.Entry entry : mNetworkAgentInfos.entrySet()) { 3151 NetworkAgentInfo existing = (NetworkAgentInfo)entry.getValue(); 3152 if (existing.networkInfo.isConnected() && 3153 request.networkCapabilities.satisfiedByNetworkCapabilities( 3154 existing.networkCapabilities) && 3155 (alternative == null || 3156 alternative.currentScore < existing.currentScore)) { 3157 alternative = existing; 3158 } 3159 } 3160 if (alternative != null && !toActivate.contains(alternative)) { 3161 toActivate.add(alternative); 3162 } 3163 } 3164 } 3165 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 3166 removeDataActivityTracking(nai); 3167 mActiveDefaultNetwork = ConnectivityManager.TYPE_NONE; 3168 requestNetworkTransitionWakelock(nai.name()); 3169 } 3170 for (NetworkAgentInfo networkToActivate : toActivate) { 3171 networkToActivate.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 3172 } 3173 } 3174 } 3175 3176 private void handleRegisterNetworkRequest(Message msg) { 3177 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 3178 final NetworkCapabilities newCap = nri.request.networkCapabilities; 3179 int score = 0; 3180 3181 // Check for the best currently alive network that satisfies this request 3182 NetworkAgentInfo bestNetwork = null; 3183 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 3184 if (VDBG) log("handleRegisterNetworkRequest checking " + network.name()); 3185 if (newCap.satisfiedByNetworkCapabilities(network.networkCapabilities)) { 3186 if (VDBG) log("apparently satisfied. currentScore=" + network.currentScore); 3187 if ((bestNetwork == null) || bestNetwork.currentScore < network.currentScore) { 3188 bestNetwork = network; 3189 } 3190 } 3191 } 3192 if (bestNetwork != null) { 3193 if (VDBG) log("using " + bestNetwork.name()); 3194 if (nri.isRequest && bestNetwork.networkInfo.isConnected()) { 3195 // Cancel any lingering so the linger timeout doesn't teardown this network 3196 // even though we have a request for it. 3197 bestNetwork.networkLingered.clear(); 3198 bestNetwork.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 3199 } 3200 bestNetwork.addRequest(nri.request); 3201 mNetworkForRequestId.put(nri.request.requestId, bestNetwork); 3202 int legacyType = nri.request.legacyType; 3203 if (legacyType != TYPE_NONE) { 3204 mLegacyTypeTracker.add(legacyType, bestNetwork); 3205 } 3206 notifyNetworkCallback(bestNetwork, nri); 3207 score = bestNetwork.currentScore; 3208 } 3209 mNetworkRequests.put(nri.request, nri); 3210 if (msg.what == EVENT_REGISTER_NETWORK_REQUEST) { 3211 if (DBG) log("sending new NetworkRequest to factories"); 3212 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3213 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 3214 0, nri.request); 3215 } 3216 } 3217 } 3218 3219 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 3220 NetworkRequestInfo nri = mNetworkRequests.get(request); 3221 if (nri != null) { 3222 if (nri.mUid != callingUid) { 3223 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 3224 return; 3225 } 3226 if (DBG) log("releasing NetworkRequest " + request); 3227 mNetworkRequests.remove(request); 3228 // tell the network currently servicing this that it's no longer interested 3229 NetworkAgentInfo affectedNetwork = mNetworkForRequestId.get(nri.request.requestId); 3230 if (affectedNetwork != null) { 3231 mNetworkForRequestId.remove(nri.request.requestId); 3232 affectedNetwork.networkRequests.remove(nri.request.requestId); 3233 if (VDBG) { 3234 log(" Removing from current network " + affectedNetwork.name() + ", leaving " + 3235 affectedNetwork.networkRequests.size() + " requests."); 3236 } 3237 } 3238 3239 if (nri.isRequest) { 3240 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3241 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 3242 nri.request); 3243 } 3244 3245 if (affectedNetwork != null) { 3246 // check if this network still has live requests - otherwise, tear down 3247 // TODO - probably push this to the NF/NA 3248 boolean keep = affectedNetwork.isVPN(); 3249 for (int i = 0; i < affectedNetwork.networkRequests.size() && !keep; i++) { 3250 NetworkRequest r = affectedNetwork.networkRequests.valueAt(i); 3251 if (mNetworkRequests.get(r).isRequest) { 3252 keep = true; 3253 } 3254 } 3255 if (keep == false) { 3256 if (DBG) log("no live requests for " + affectedNetwork.name() + 3257 "; disconnecting"); 3258 affectedNetwork.asyncChannel.disconnect(); 3259 } 3260 } 3261 } 3262 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 3263 } 3264 } 3265 3266 private class InternalHandler extends Handler { 3267 public InternalHandler(Looper looper) { 3268 super(looper); 3269 } 3270 3271 @Override 3272 public void handleMessage(Message msg) { 3273 NetworkInfo info; 3274 switch (msg.what) { 3275 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 3276 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 3277 String causedBy = null; 3278 synchronized (ConnectivityService.this) { 3279 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 3280 mNetTransitionWakeLock.isHeld()) { 3281 mNetTransitionWakeLock.release(); 3282 causedBy = mNetTransitionWakeLockCausedBy; 3283 } else { 3284 break; 3285 } 3286 } 3287 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 3288 log("Failed to find a new network - expiring NetTransition Wakelock"); 3289 } else { 3290 log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + 3291 " cleared because we found a replacement network"); 3292 } 3293 break; 3294 } 3295 case EVENT_RESTORE_DEFAULT_NETWORK: { 3296 FeatureUser u = (FeatureUser)msg.obj; 3297 u.expire(); 3298 break; 3299 } 3300 case EVENT_INET_CONDITION_CHANGE: { 3301 int netType = msg.arg1; 3302 int condition = msg.arg2; 3303 handleInetConditionChange(netType, condition); 3304 break; 3305 } 3306 case EVENT_INET_CONDITION_HOLD_END: { 3307 int netType = msg.arg1; 3308 int sequence = msg.arg2; 3309 handleInetConditionHoldEnd(netType, sequence); 3310 break; 3311 } 3312 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 3313 handleDeprecatedGlobalHttpProxy(); 3314 break; 3315 } 3316 case EVENT_SET_DEPENDENCY_MET: { 3317 boolean met = (msg.arg1 == ENABLED); 3318 handleSetDependencyMet(msg.arg2, met); 3319 break; 3320 } 3321 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 3322 Intent intent = (Intent)msg.obj; 3323 sendStickyBroadcast(intent); 3324 break; 3325 } 3326 case EVENT_SET_POLICY_DATA_ENABLE: { 3327 final int networkType = msg.arg1; 3328 final boolean enabled = msg.arg2 == ENABLED; 3329 handleSetPolicyDataEnable(networkType, enabled); 3330 break; 3331 } 3332 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 3333 int tag = mEnableFailFastMobileDataTag.get(); 3334 if (msg.arg1 == tag) { 3335 MobileDataStateTracker mobileDst = 3336 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3337 if (mobileDst != null) { 3338 mobileDst.setEnableFailFastMobileData(msg.arg2); 3339 } 3340 } else { 3341 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 3342 + " != tag:" + tag); 3343 } 3344 break; 3345 } 3346 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 3347 handleNetworkSamplingTimeout(); 3348 break; 3349 } 3350 case EVENT_PROXY_HAS_CHANGED: { 3351 handleApplyDefaultProxy((ProxyInfo)msg.obj); 3352 break; 3353 } 3354 case EVENT_REGISTER_NETWORK_FACTORY: { 3355 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 3356 break; 3357 } 3358 case EVENT_UNREGISTER_NETWORK_FACTORY: { 3359 handleUnregisterNetworkFactory((Messenger)msg.obj); 3360 break; 3361 } 3362 case EVENT_REGISTER_NETWORK_AGENT: { 3363 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 3364 break; 3365 } 3366 case EVENT_REGISTER_NETWORK_REQUEST: 3367 case EVENT_REGISTER_NETWORK_LISTENER: { 3368 handleRegisterNetworkRequest(msg); 3369 break; 3370 } 3371 case EVENT_RELEASE_NETWORK_REQUEST: { 3372 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 3373 break; 3374 } 3375 } 3376 } 3377 } 3378 3379 // javadoc from interface 3380 public int tether(String iface) { 3381 enforceTetherChangePermission(); 3382 3383 if (isTetheringSupported()) { 3384 return mTethering.tether(iface); 3385 } else { 3386 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3387 } 3388 } 3389 3390 // javadoc from interface 3391 public int untether(String iface) { 3392 enforceTetherChangePermission(); 3393 3394 if (isTetheringSupported()) { 3395 return mTethering.untether(iface); 3396 } else { 3397 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3398 } 3399 } 3400 3401 // javadoc from interface 3402 public int getLastTetherError(String iface) { 3403 enforceTetherAccessPermission(); 3404 3405 if (isTetheringSupported()) { 3406 return mTethering.getLastTetherError(iface); 3407 } else { 3408 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3409 } 3410 } 3411 3412 // TODO - proper iface API for selection by property, inspection, etc 3413 public String[] getTetherableUsbRegexs() { 3414 enforceTetherAccessPermission(); 3415 if (isTetheringSupported()) { 3416 return mTethering.getTetherableUsbRegexs(); 3417 } else { 3418 return new String[0]; 3419 } 3420 } 3421 3422 public String[] getTetherableWifiRegexs() { 3423 enforceTetherAccessPermission(); 3424 if (isTetheringSupported()) { 3425 return mTethering.getTetherableWifiRegexs(); 3426 } else { 3427 return new String[0]; 3428 } 3429 } 3430 3431 public String[] getTetherableBluetoothRegexs() { 3432 enforceTetherAccessPermission(); 3433 if (isTetheringSupported()) { 3434 return mTethering.getTetherableBluetoothRegexs(); 3435 } else { 3436 return new String[0]; 3437 } 3438 } 3439 3440 public int setUsbTethering(boolean enable) { 3441 enforceTetherChangePermission(); 3442 if (isTetheringSupported()) { 3443 return mTethering.setUsbTethering(enable); 3444 } else { 3445 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3446 } 3447 } 3448 3449 // TODO - move iface listing, queries, etc to new module 3450 // javadoc from interface 3451 public String[] getTetherableIfaces() { 3452 enforceTetherAccessPermission(); 3453 return mTethering.getTetherableIfaces(); 3454 } 3455 3456 public String[] getTetheredIfaces() { 3457 enforceTetherAccessPermission(); 3458 return mTethering.getTetheredIfaces(); 3459 } 3460 3461 public String[] getTetheringErroredIfaces() { 3462 enforceTetherAccessPermission(); 3463 return mTethering.getErroredIfaces(); 3464 } 3465 3466 public String[] getTetheredDhcpRanges() { 3467 enforceConnectivityInternalPermission(); 3468 return mTethering.getTetheredDhcpRanges(); 3469 } 3470 3471 // if ro.tether.denied = true we default to no tethering 3472 // gservices could set the secure setting to 1 though to enable it on a build where it 3473 // had previously been turned off. 3474 public boolean isTetheringSupported() { 3475 enforceTetherAccessPermission(); 3476 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 3477 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 3478 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 3479 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 3480 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 3481 mTethering.getTetherableWifiRegexs().length != 0 || 3482 mTethering.getTetherableBluetoothRegexs().length != 0) && 3483 mTethering.getUpstreamIfaceTypes().length != 0); 3484 } 3485 3486 // Called when we lose the default network and have no replacement yet. 3487 // This will automatically be cleared after X seconds or a new default network 3488 // becomes CONNECTED, whichever happens first. The timer is started by the 3489 // first caller and not restarted by subsequent callers. 3490 private void requestNetworkTransitionWakelock(String forWhom) { 3491 int serialNum = 0; 3492 synchronized (this) { 3493 if (mNetTransitionWakeLock.isHeld()) return; 3494 serialNum = ++mNetTransitionWakeLockSerialNumber; 3495 mNetTransitionWakeLock.acquire(); 3496 mNetTransitionWakeLockCausedBy = forWhom; 3497 } 3498 mHandler.sendMessageDelayed(mHandler.obtainMessage( 3499 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 3500 mNetTransitionWakeLockTimeout); 3501 return; 3502 } 3503 3504 // 100 percent is full good, 0 is full bad. 3505 public void reportInetCondition(int networkType, int percentage) { 3506 if (VDBG) log("reportNetworkCondition(" + networkType + ", " + percentage + ")"); 3507 mContext.enforceCallingOrSelfPermission( 3508 android.Manifest.permission.STATUS_BAR, 3509 "ConnectivityService"); 3510 3511 if (DBG) { 3512 int pid = getCallingPid(); 3513 int uid = getCallingUid(); 3514 String s = pid + "(" + uid + ") reports inet is " + 3515 (percentage > 50 ? "connected" : "disconnected") + " (" + percentage + ") on " + 3516 "network Type " + networkType + " at " + GregorianCalendar.getInstance().getTime(); 3517 mInetLog.add(s); 3518 while(mInetLog.size() > INET_CONDITION_LOG_MAX_SIZE) { 3519 mInetLog.remove(0); 3520 } 3521 } 3522 mHandler.sendMessage(mHandler.obtainMessage( 3523 EVENT_INET_CONDITION_CHANGE, networkType, percentage)); 3524 } 3525 3526 public void reportBadNetwork(Network network) { 3527 //TODO 3528 } 3529 3530 private void handleInetConditionChange(int netType, int condition) { 3531 if (mActiveDefaultNetwork == -1) { 3532 if (DBG) log("handleInetConditionChange: no active default network - ignore"); 3533 return; 3534 } 3535 if (mActiveDefaultNetwork != netType) { 3536 if (DBG) log("handleInetConditionChange: net=" + netType + 3537 " != default=" + mActiveDefaultNetwork + " - ignore"); 3538 return; 3539 } 3540 if (VDBG) { 3541 log("handleInetConditionChange: net=" + 3542 netType + ", condition=" + condition + 3543 ",mActiveDefaultNetwork=" + mActiveDefaultNetwork); 3544 } 3545 mDefaultInetCondition = condition; 3546 int delay; 3547 if (mInetConditionChangeInFlight == false) { 3548 if (VDBG) log("handleInetConditionChange: starting a change hold"); 3549 // setup a new hold to debounce this 3550 if (mDefaultInetCondition > 50) { 3551 delay = Settings.Global.getInt(mContext.getContentResolver(), 3552 Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY, 500); 3553 } else { 3554 delay = Settings.Global.getInt(mContext.getContentResolver(), 3555 Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 3000); 3556 } 3557 mInetConditionChangeInFlight = true; 3558 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_INET_CONDITION_HOLD_END, 3559 mActiveDefaultNetwork, mDefaultConnectionSequence), delay); 3560 } else { 3561 // we've set the new condition, when this hold ends that will get picked up 3562 if (VDBG) log("handleInetConditionChange: currently in hold - not setting new end evt"); 3563 } 3564 } 3565 3566 private void handleInetConditionHoldEnd(int netType, int sequence) { 3567 if (DBG) { 3568 log("handleInetConditionHoldEnd: net=" + netType + 3569 ", condition=" + mDefaultInetCondition + 3570 ", published condition=" + mDefaultInetConditionPublished); 3571 } 3572 mInetConditionChangeInFlight = false; 3573 3574 if (mActiveDefaultNetwork == -1) { 3575 if (DBG) log("handleInetConditionHoldEnd: no active default network - ignoring"); 3576 return; 3577 } 3578 if (mDefaultConnectionSequence != sequence) { 3579 if (DBG) log("handleInetConditionHoldEnd: event hold for obsolete network - ignoring"); 3580 return; 3581 } 3582 // TODO: Figure out why this optimization sometimes causes a 3583 // change in mDefaultInetCondition to be missed and the 3584 // UI to not be updated. 3585 //if (mDefaultInetConditionPublished == mDefaultInetCondition) { 3586 // if (DBG) log("no change in condition - aborting"); 3587 // return; 3588 //} 3589 NetworkInfo networkInfo = getNetworkInfoForType(mActiveDefaultNetwork); 3590 if (networkInfo.isConnected() == false) { 3591 if (DBG) log("handleInetConditionHoldEnd: default network not connected - ignoring"); 3592 return; 3593 } 3594 mDefaultInetConditionPublished = mDefaultInetCondition; 3595 sendInetConditionBroadcast(networkInfo); 3596 return; 3597 } 3598 3599 public ProxyInfo getProxy() { 3600 // this information is already available as a world read/writable jvm property 3601 // so this API change wouldn't have a benifit. It also breaks the passing 3602 // of proxy info to all the JVMs. 3603 // enforceAccessPermission(); 3604 synchronized (mProxyLock) { 3605 ProxyInfo ret = mGlobalProxy; 3606 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 3607 return ret; 3608 } 3609 } 3610 3611 public void setGlobalProxy(ProxyInfo proxyProperties) { 3612 enforceConnectivityInternalPermission(); 3613 3614 synchronized (mProxyLock) { 3615 if (proxyProperties == mGlobalProxy) return; 3616 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 3617 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 3618 3619 String host = ""; 3620 int port = 0; 3621 String exclList = ""; 3622 String pacFileUrl = ""; 3623 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 3624 (proxyProperties.getPacFileUrl() != null))) { 3625 if (!proxyProperties.isValid()) { 3626 if (DBG) 3627 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3628 return; 3629 } 3630 mGlobalProxy = new ProxyInfo(proxyProperties); 3631 host = mGlobalProxy.getHost(); 3632 port = mGlobalProxy.getPort(); 3633 exclList = mGlobalProxy.getExclusionListAsString(); 3634 if (proxyProperties.getPacFileUrl() != null) { 3635 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 3636 } 3637 } else { 3638 mGlobalProxy = null; 3639 } 3640 ContentResolver res = mContext.getContentResolver(); 3641 final long token = Binder.clearCallingIdentity(); 3642 try { 3643 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 3644 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 3645 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 3646 exclList); 3647 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 3648 } finally { 3649 Binder.restoreCallingIdentity(token); 3650 } 3651 } 3652 3653 if (mGlobalProxy == null) { 3654 proxyProperties = mDefaultProxy; 3655 } 3656 sendProxyBroadcast(proxyProperties); 3657 } 3658 3659 private void loadGlobalProxy() { 3660 ContentResolver res = mContext.getContentResolver(); 3661 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 3662 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 3663 String exclList = Settings.Global.getString(res, 3664 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 3665 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 3666 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 3667 ProxyInfo proxyProperties; 3668 if (!TextUtils.isEmpty(pacFileUrl)) { 3669 proxyProperties = new ProxyInfo(pacFileUrl); 3670 } else { 3671 proxyProperties = new ProxyInfo(host, port, exclList); 3672 } 3673 if (!proxyProperties.isValid()) { 3674 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3675 return; 3676 } 3677 3678 synchronized (mProxyLock) { 3679 mGlobalProxy = proxyProperties; 3680 } 3681 } 3682 } 3683 3684 public ProxyInfo getGlobalProxy() { 3685 // this information is already available as a world read/writable jvm property 3686 // so this API change wouldn't have a benifit. It also breaks the passing 3687 // of proxy info to all the JVMs. 3688 // enforceAccessPermission(); 3689 synchronized (mProxyLock) { 3690 return mGlobalProxy; 3691 } 3692 } 3693 3694 private void handleApplyDefaultProxy(ProxyInfo proxy) { 3695 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3696 && (proxy.getPacFileUrl() == null)) { 3697 proxy = null; 3698 } 3699 synchronized (mProxyLock) { 3700 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3701 if (mDefaultProxy == proxy) return; // catches repeated nulls 3702 if (proxy != null && !proxy.isValid()) { 3703 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3704 return; 3705 } 3706 3707 // This call could be coming from the PacManager, containing the port of the local 3708 // proxy. If this new proxy matches the global proxy then copy this proxy to the 3709 // global (to get the correct local port), and send a broadcast. 3710 // TODO: Switch PacManager to have its own message to send back rather than 3711 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 3712 if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null) 3713 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 3714 mGlobalProxy = proxy; 3715 sendProxyBroadcast(mGlobalProxy); 3716 return; 3717 } 3718 mDefaultProxy = proxy; 3719 3720 if (mGlobalProxy != null) return; 3721 if (!mDefaultProxyDisabled) { 3722 sendProxyBroadcast(proxy); 3723 } 3724 } 3725 } 3726 3727 private void handleDeprecatedGlobalHttpProxy() { 3728 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3729 Settings.Global.HTTP_PROXY); 3730 if (!TextUtils.isEmpty(proxy)) { 3731 String data[] = proxy.split(":"); 3732 if (data.length == 0) { 3733 return; 3734 } 3735 3736 String proxyHost = data[0]; 3737 int proxyPort = 8080; 3738 if (data.length > 1) { 3739 try { 3740 proxyPort = Integer.parseInt(data[1]); 3741 } catch (NumberFormatException e) { 3742 return; 3743 } 3744 } 3745 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 3746 setGlobalProxy(p); 3747 } 3748 } 3749 3750 private void sendProxyBroadcast(ProxyInfo proxy) { 3751 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 3752 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3753 if (DBG) log("sending Proxy Broadcast for " + proxy); 3754 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3755 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3756 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3757 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3758 final long ident = Binder.clearCallingIdentity(); 3759 try { 3760 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3761 } finally { 3762 Binder.restoreCallingIdentity(ident); 3763 } 3764 } 3765 3766 private static class SettingsObserver extends ContentObserver { 3767 private int mWhat; 3768 private Handler mHandler; 3769 SettingsObserver(Handler handler, int what) { 3770 super(handler); 3771 mHandler = handler; 3772 mWhat = what; 3773 } 3774 3775 void observe(Context context) { 3776 ContentResolver resolver = context.getContentResolver(); 3777 resolver.registerContentObserver(Settings.Global.getUriFor( 3778 Settings.Global.HTTP_PROXY), false, this); 3779 } 3780 3781 @Override 3782 public void onChange(boolean selfChange) { 3783 mHandler.obtainMessage(mWhat).sendToTarget(); 3784 } 3785 } 3786 3787 private static void log(String s) { 3788 Slog.d(TAG, s); 3789 } 3790 3791 private static void loge(String s) { 3792 Slog.e(TAG, s); 3793 } 3794 3795 int convertFeatureToNetworkType(int networkType, String feature) { 3796 int usedNetworkType = networkType; 3797 3798 if(networkType == ConnectivityManager.TYPE_MOBILE) { 3799 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 3800 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 3801 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 3802 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 3803 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 3804 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 3805 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 3806 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 3807 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 3808 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 3809 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 3810 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 3811 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 3812 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 3813 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 3814 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_EMERGENCY)) { 3815 usedNetworkType = ConnectivityManager.TYPE_MOBILE_EMERGENCY; 3816 } else { 3817 Slog.e(TAG, "Can't match any mobile netTracker!"); 3818 } 3819 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 3820 if (TextUtils.equals(feature, "p2p")) { 3821 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 3822 } else { 3823 Slog.e(TAG, "Can't match any wifi netTracker!"); 3824 } 3825 } else { 3826 Slog.e(TAG, "Unexpected network type"); 3827 } 3828 return usedNetworkType; 3829 } 3830 3831 private static <T> T checkNotNull(T value, String message) { 3832 if (value == null) { 3833 throw new NullPointerException(message); 3834 } 3835 return value; 3836 } 3837 3838 /** 3839 * Prepare for a VPN application. This method is used by VpnDialogs 3840 * and not available in ConnectivityManager. Permissions are checked 3841 * in Vpn class. 3842 * @hide 3843 */ 3844 @Override 3845 public boolean prepareVpn(String oldPackage, String newPackage) { 3846 throwIfLockdownEnabled(); 3847 int user = UserHandle.getUserId(Binder.getCallingUid()); 3848 synchronized(mVpns) { 3849 return mVpns.get(user).prepare(oldPackage, newPackage); 3850 } 3851 } 3852 3853 /** 3854 * Configure a TUN interface and return its file descriptor. Parameters 3855 * are encoded and opaque to this class. This method is used by VpnBuilder 3856 * and not available in ConnectivityManager. Permissions are checked in 3857 * Vpn class. 3858 * @hide 3859 */ 3860 @Override 3861 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3862 throwIfLockdownEnabled(); 3863 int user = UserHandle.getUserId(Binder.getCallingUid()); 3864 synchronized(mVpns) { 3865 return mVpns.get(user).establish(config); 3866 } 3867 } 3868 3869 /** 3870 * Start legacy VPN, controlling native daemons as needed. Creates a 3871 * secondary thread to perform connection work, returning quickly. 3872 */ 3873 @Override 3874 public void startLegacyVpn(VpnProfile profile) { 3875 throwIfLockdownEnabled(); 3876 final LinkProperties egress = getActiveLinkProperties(); 3877 if (egress == null) { 3878 throw new IllegalStateException("Missing active network connection"); 3879 } 3880 int user = UserHandle.getUserId(Binder.getCallingUid()); 3881 synchronized(mVpns) { 3882 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3883 } 3884 } 3885 3886 /** 3887 * Return the information of the ongoing legacy VPN. This method is used 3888 * by VpnSettings and not available in ConnectivityManager. Permissions 3889 * are checked in Vpn class. 3890 * @hide 3891 */ 3892 @Override 3893 public LegacyVpnInfo getLegacyVpnInfo() { 3894 throwIfLockdownEnabled(); 3895 int user = UserHandle.getUserId(Binder.getCallingUid()); 3896 synchronized(mVpns) { 3897 return mVpns.get(user).getLegacyVpnInfo(); 3898 } 3899 } 3900 3901 /** 3902 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 3903 * not available in ConnectivityManager. 3904 * Permissions are checked in Vpn class. 3905 * @hide 3906 */ 3907 @Override 3908 public VpnConfig getVpnConfig() { 3909 int user = UserHandle.getUserId(Binder.getCallingUid()); 3910 synchronized(mVpns) { 3911 return mVpns.get(user).getVpnConfig(); 3912 } 3913 } 3914 3915 @Override 3916 public boolean updateLockdownVpn() { 3917 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3918 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3919 return false; 3920 } 3921 3922 // Tear down existing lockdown if profile was removed 3923 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3924 if (mLockdownEnabled) { 3925 if (!mKeyStore.isUnlocked()) { 3926 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 3927 return false; 3928 } 3929 3930 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3931 final VpnProfile profile = VpnProfile.decode( 3932 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3933 int user = UserHandle.getUserId(Binder.getCallingUid()); 3934 synchronized(mVpns) { 3935 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 3936 profile)); 3937 } 3938 } else { 3939 setLockdownTracker(null); 3940 } 3941 3942 return true; 3943 } 3944 3945 /** 3946 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3947 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3948 */ 3949 private void setLockdownTracker(LockdownVpnTracker tracker) { 3950 // Shutdown any existing tracker 3951 final LockdownVpnTracker existing = mLockdownTracker; 3952 mLockdownTracker = null; 3953 if (existing != null) { 3954 existing.shutdown(); 3955 } 3956 3957 try { 3958 if (tracker != null) { 3959 mNetd.setFirewallEnabled(true); 3960 mNetd.setFirewallInterfaceRule("lo", true); 3961 mLockdownTracker = tracker; 3962 mLockdownTracker.init(); 3963 } else { 3964 mNetd.setFirewallEnabled(false); 3965 } 3966 } catch (RemoteException e) { 3967 // ignored; NMS lives inside system_server 3968 } 3969 } 3970 3971 private void throwIfLockdownEnabled() { 3972 if (mLockdownEnabled) { 3973 throw new IllegalStateException("Unavailable in lockdown mode"); 3974 } 3975 } 3976 3977 public void supplyMessenger(int networkType, Messenger messenger) { 3978 enforceConnectivityInternalPermission(); 3979 3980 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 3981 mNetTrackers[networkType].supplyMessenger(messenger); 3982 } 3983 } 3984 3985 public int findConnectionTypeForIface(String iface) { 3986 enforceConnectivityInternalPermission(); 3987 3988 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 3989 for (NetworkStateTracker tracker : mNetTrackers) { 3990 if (tracker != null) { 3991 LinkProperties lp = tracker.getLinkProperties(); 3992 if (lp != null && iface.equals(lp.getInterfaceName())) { 3993 return tracker.getNetworkInfo().getType(); 3994 } 3995 } 3996 } 3997 return ConnectivityManager.TYPE_NONE; 3998 } 3999 4000 /** 4001 * Have mobile data fail fast if enabled. 4002 * 4003 * @param enabled DctConstants.ENABLED/DISABLED 4004 */ 4005 private void setEnableFailFastMobileData(int enabled) { 4006 int tag; 4007 4008 if (enabled == DctConstants.ENABLED) { 4009 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 4010 } else { 4011 tag = mEnableFailFastMobileDataTag.get(); 4012 } 4013 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 4014 enabled)); 4015 } 4016 4017 private boolean isMobileDataStateTrackerReady() { 4018 MobileDataStateTracker mdst = 4019 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4020 return (mdst != null) && (mdst.isReady()); 4021 } 4022 4023 /** 4024 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 4025 */ 4026 4027 /** 4028 * No connection was possible to the network. 4029 * This is NOT a warm sim. 4030 */ 4031 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 4032 4033 /** 4034 * A connection was made to the internet, all is well. 4035 * This is NOT a warm sim. 4036 */ 4037 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 4038 4039 /** 4040 * A connection was made but no dns server was available to resolve a name to address. 4041 * This is NOT a warm sim since provisioning network is supported. 4042 */ 4043 private static final int CMP_RESULT_CODE_NO_DNS = 2; 4044 4045 /** 4046 * A connection was made but could not open a TCP connection. 4047 * This is NOT a warm sim since provisioning network is supported. 4048 */ 4049 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 4050 4051 /** 4052 * A connection was made but there was a redirection, we appear to be in walled garden. 4053 * This is an indication of a warm sim on a mobile network such as T-Mobile. 4054 */ 4055 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 4056 4057 /** 4058 * The mobile network is a provisioning network. 4059 * This is an indication of a warm sim on a mobile network such as AT&T. 4060 */ 4061 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 4062 4063 /** 4064 * The mobile network is provisioning 4065 */ 4066 private static final int CMP_RESULT_CODE_IS_PROVISIONING = 6; 4067 4068 private AtomicBoolean mIsProvisioningNetwork = new AtomicBoolean(false); 4069 private AtomicBoolean mIsStartingProvisioning = new AtomicBoolean(false); 4070 4071 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 4072 4073 @Override 4074 public int checkMobileProvisioning(int suggestedTimeOutMs) { 4075 int timeOutMs = -1; 4076 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 4077 enforceConnectivityInternalPermission(); 4078 4079 final long token = Binder.clearCallingIdentity(); 4080 try { 4081 timeOutMs = suggestedTimeOutMs; 4082 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 4083 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 4084 } 4085 4086 // Check that mobile networks are supported 4087 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 4088 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 4089 if (DBG) log("checkMobileProvisioning: X no mobile network"); 4090 return timeOutMs; 4091 } 4092 4093 // If we're already checking don't do it again 4094 // TODO: Add a queue of results... 4095 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 4096 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 4097 return timeOutMs; 4098 } 4099 4100 // Start off with mobile notification off 4101 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4102 4103 CheckMp checkMp = new CheckMp(mContext, this); 4104 CheckMp.CallBack cb = new CheckMp.CallBack() { 4105 @Override 4106 void onComplete(Integer result) { 4107 if (DBG) log("CheckMp.onComplete: result=" + result); 4108 NetworkInfo ni = 4109 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 4110 switch(result) { 4111 case CMP_RESULT_CODE_CONNECTABLE: 4112 case CMP_RESULT_CODE_NO_CONNECTION: 4113 case CMP_RESULT_CODE_NO_DNS: 4114 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 4115 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 4116 break; 4117 } 4118 case CMP_RESULT_CODE_REDIRECTED: { 4119 if (DBG) log("CheckMp.onComplete: warm sim"); 4120 String url = getMobileProvisioningUrl(); 4121 if (TextUtils.isEmpty(url)) { 4122 url = getMobileRedirectedProvisioningUrl(); 4123 } 4124 if (TextUtils.isEmpty(url) == false) { 4125 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 4126 setProvNotificationVisible(true, 4127 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4128 url); 4129 } else { 4130 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 4131 } 4132 break; 4133 } 4134 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 4135 String url = getMobileProvisioningUrl(); 4136 if (TextUtils.isEmpty(url) == false) { 4137 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 4138 setProvNotificationVisible(true, 4139 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4140 url); 4141 // Mark that we've got a provisioning network and 4142 // Disable Mobile Data until user actually starts provisioning. 4143 mIsProvisioningNetwork.set(true); 4144 MobileDataStateTracker mdst = (MobileDataStateTracker) 4145 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4146 4147 // Disable radio until user starts provisioning 4148 mdst.setRadio(false); 4149 } else { 4150 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 4151 } 4152 break; 4153 } 4154 case CMP_RESULT_CODE_IS_PROVISIONING: { 4155 // FIXME: Need to know when provisioning is done. Probably we can 4156 // check the completion status if successful we're done if we 4157 // "timedout" or still connected to provisioning APN turn off data? 4158 if (DBG) log("CheckMp.onComplete: provisioning started"); 4159 mIsStartingProvisioning.set(false); 4160 break; 4161 } 4162 default: { 4163 loge("CheckMp.onComplete: ignore unexpected result=" + result); 4164 break; 4165 } 4166 } 4167 mIsCheckingMobileProvisioning.set(false); 4168 } 4169 }; 4170 CheckMp.Params params = 4171 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 4172 if (DBG) log("checkMobileProvisioning: params=" + params); 4173 // TODO: Reenable when calls to the now defunct 4174 // MobileDataStateTracker.isProvisioningNetwork() are removed. 4175 // This code should be moved to the Telephony code. 4176 // checkMp.execute(params); 4177 } finally { 4178 Binder.restoreCallingIdentity(token); 4179 if (DBG) log("checkMobileProvisioning: X"); 4180 } 4181 return timeOutMs; 4182 } 4183 4184 static class CheckMp extends 4185 AsyncTask<CheckMp.Params, Void, Integer> { 4186 private static final String CHECKMP_TAG = "CheckMp"; 4187 4188 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 4189 private static boolean mTestingFailures; 4190 4191 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 4192 private static final int MAX_LOOPS = 4; 4193 4194 // Number of milli-seconds to complete all of the retires 4195 public static final int MAX_TIMEOUT_MS = 60000; 4196 4197 // The socket should retry only 5 seconds, the default is longer 4198 private static final int SOCKET_TIMEOUT_MS = 5000; 4199 4200 // Sleep time for network errors 4201 private static final int NET_ERROR_SLEEP_SEC = 3; 4202 4203 // Sleep time for network route establishment 4204 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 4205 4206 // Short sleep time for polling :( 4207 private static final int POLLING_SLEEP_SEC = 1; 4208 4209 private Context mContext; 4210 private ConnectivityService mCs; 4211 private TelephonyManager mTm; 4212 private Params mParams; 4213 4214 /** 4215 * Parameters for AsyncTask.execute 4216 */ 4217 static class Params { 4218 private String mUrl; 4219 private long mTimeOutMs; 4220 private CallBack mCb; 4221 4222 Params(String url, long timeOutMs, CallBack cb) { 4223 mUrl = url; 4224 mTimeOutMs = timeOutMs; 4225 mCb = cb; 4226 } 4227 4228 @Override 4229 public String toString() { 4230 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 4231 } 4232 } 4233 4234 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 4235 // issued by name or ip address, for Google its by name so when we construct 4236 // this HostnameVerifier we'll pass the original Uri and use it to verify 4237 // the host. If the host name in the original uril fails we'll test the 4238 // hostname parameter just incase things change. 4239 static class CheckMpHostnameVerifier implements HostnameVerifier { 4240 Uri mOrgUri; 4241 4242 CheckMpHostnameVerifier(Uri orgUri) { 4243 mOrgUri = orgUri; 4244 } 4245 4246 @Override 4247 public boolean verify(String hostname, SSLSession session) { 4248 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 4249 String orgUriHost = mOrgUri.getHost(); 4250 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 4251 if (DBG) { 4252 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 4253 + " orgUriHost=" + orgUriHost); 4254 } 4255 return retVal; 4256 } 4257 } 4258 4259 /** 4260 * The call back object passed in Params. onComplete will be called 4261 * on the main thread. 4262 */ 4263 abstract static class CallBack { 4264 // Called on the main thread. 4265 abstract void onComplete(Integer result); 4266 } 4267 4268 public CheckMp(Context context, ConnectivityService cs) { 4269 if (Build.IS_DEBUGGABLE) { 4270 mTestingFailures = 4271 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 4272 } else { 4273 mTestingFailures = false; 4274 } 4275 4276 mContext = context; 4277 mCs = cs; 4278 4279 // Setup access to TelephonyService we'll be using. 4280 mTm = (TelephonyManager) mContext.getSystemService( 4281 Context.TELEPHONY_SERVICE); 4282 } 4283 4284 /** 4285 * Get the default url to use for the test. 4286 */ 4287 public String getDefaultUrl() { 4288 // See http://go/clientsdns for usage approval 4289 String server = Settings.Global.getString(mContext.getContentResolver(), 4290 Settings.Global.CAPTIVE_PORTAL_SERVER); 4291 if (server == null) { 4292 server = "clients3.google.com"; 4293 } 4294 return "http://" + server + "/generate_204"; 4295 } 4296 4297 /** 4298 * Detect if its possible to connect to the http url. DNS based detection techniques 4299 * do not work at all hotspots. The best way to check is to perform a request to 4300 * a known address that fetches the data we expect. 4301 */ 4302 private synchronized Integer isMobileOk(Params params) { 4303 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 4304 Uri orgUri = Uri.parse(params.mUrl); 4305 Random rand = new Random(); 4306 mParams = params; 4307 4308 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 4309 result = CMP_RESULT_CODE_NO_CONNECTION; 4310 log("isMobileOk: X not mobile capable result=" + result); 4311 return result; 4312 } 4313 4314 if (mCs.mIsStartingProvisioning.get()) { 4315 result = CMP_RESULT_CODE_IS_PROVISIONING; 4316 log("isMobileOk: X is provisioning result=" + result); 4317 return result; 4318 } 4319 4320 // See if we've already determined we've got a provisioning connection, 4321 // if so we don't need to do anything active. 4322 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 4323 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4324 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 4325 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 4326 4327 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 4328 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4329 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 4330 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 4331 4332 if (isDefaultProvisioning || isHipriProvisioning) { 4333 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4334 log("isMobileOk: X default || hipri is provisioning result=" + result); 4335 return result; 4336 } 4337 4338 try { 4339 // Continue trying to connect until time has run out 4340 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 4341 4342 if (!mCs.isMobileDataStateTrackerReady()) { 4343 // Wait for MobileDataStateTracker to be ready. 4344 if (DBG) log("isMobileOk: mdst is not ready"); 4345 while(SystemClock.elapsedRealtime() < endTime) { 4346 if (mCs.isMobileDataStateTrackerReady()) { 4347 // Enable fail fast as we'll do retries here and use a 4348 // hipri connection so the default connection stays active. 4349 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 4350 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 4351 break; 4352 } 4353 sleep(POLLING_SLEEP_SEC); 4354 } 4355 } 4356 4357 log("isMobileOk: start hipri url=" + params.mUrl); 4358 4359 // First wait until we can start using hipri 4360 Binder binder = new Binder(); 4361 while(SystemClock.elapsedRealtime() < endTime) { 4362 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4363 Phone.FEATURE_ENABLE_HIPRI, binder); 4364 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 4365 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 4366 log("isMobileOk: hipri started"); 4367 break; 4368 } 4369 if (VDBG) log("isMobileOk: hipri not started yet"); 4370 result = CMP_RESULT_CODE_NO_CONNECTION; 4371 sleep(POLLING_SLEEP_SEC); 4372 } 4373 4374 // Continue trying to connect until time has run out 4375 while(SystemClock.elapsedRealtime() < endTime) { 4376 try { 4377 // Wait for hipri to connect. 4378 // TODO: Don't poll and handle situation where hipri fails 4379 // because default is retrying. See b/9569540 4380 NetworkInfo.State state = mCs 4381 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4382 if (state != NetworkInfo.State.CONNECTED) { 4383 if (true/*VDBG*/) { 4384 log("isMobileOk: not connected ni=" + 4385 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4386 } 4387 sleep(POLLING_SLEEP_SEC); 4388 result = CMP_RESULT_CODE_NO_CONNECTION; 4389 continue; 4390 } 4391 4392 // Hipri has started check if this is a provisioning url 4393 MobileDataStateTracker mdst = (MobileDataStateTracker) 4394 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4395 if (mdst.isProvisioningNetwork()) { 4396 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4397 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 4398 return result; 4399 } else { 4400 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 4401 } 4402 4403 // Get of the addresses associated with the url host. We need to use the 4404 // address otherwise HttpURLConnection object will use the name to get 4405 // the addresses and will try every address but that will bypass the 4406 // route to host we setup and the connection could succeed as the default 4407 // interface might be connected to the internet via wifi or other interface. 4408 InetAddress[] addresses; 4409 try { 4410 addresses = InetAddress.getAllByName(orgUri.getHost()); 4411 } catch (UnknownHostException e) { 4412 result = CMP_RESULT_CODE_NO_DNS; 4413 log("isMobileOk: X UnknownHostException result=" + result); 4414 return result; 4415 } 4416 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 4417 4418 // Get the type of addresses supported by this link 4419 LinkProperties lp = mCs.getLinkPropertiesForTypeInternal( 4420 ConnectivityManager.TYPE_MOBILE_HIPRI); 4421 boolean linkHasIpv4 = lp.hasIPv4Address(); 4422 boolean linkHasIpv6 = lp.hasGlobalIPv6Address(); 4423 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 4424 + " linkHasIpv6=" + linkHasIpv6); 4425 4426 final ArrayList<InetAddress> validAddresses = 4427 new ArrayList<InetAddress>(addresses.length); 4428 4429 for (InetAddress addr : addresses) { 4430 if (((addr instanceof Inet4Address) && linkHasIpv4) || 4431 ((addr instanceof Inet6Address) && linkHasIpv6)) { 4432 validAddresses.add(addr); 4433 } 4434 } 4435 4436 if (validAddresses.size() == 0) { 4437 return CMP_RESULT_CODE_NO_CONNECTION; 4438 } 4439 4440 int addrTried = 0; 4441 while (true) { 4442 // Loop through at most MAX_LOOPS valid addresses or until 4443 // we run out of time 4444 if (addrTried++ >= MAX_LOOPS) { 4445 log("isMobileOk: too many loops tried - giving up"); 4446 break; 4447 } 4448 if (SystemClock.elapsedRealtime() >= endTime) { 4449 log("isMobileOk: spend too much time - giving up"); 4450 break; 4451 } 4452 4453 InetAddress hostAddr = validAddresses.get(rand.nextInt( 4454 validAddresses.size())); 4455 4456 // Make a route to host so we check the specific interface. 4457 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 4458 hostAddr.getAddress())) { 4459 // Wait a short time to be sure the route is established ?? 4460 log("isMobileOk:" 4461 + " wait to establish route to hostAddr=" + hostAddr); 4462 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 4463 } else { 4464 log("isMobileOk:" 4465 + " could not establish route to hostAddr=" + hostAddr); 4466 // Wait a short time before the next attempt 4467 sleep(NET_ERROR_SLEEP_SEC); 4468 continue; 4469 } 4470 4471 // Rewrite the url to have numeric address to use the specific route 4472 // using http for half the attempts and https for the other half. 4473 // Doing https first and http second as on a redirected walled garden 4474 // such as t-mobile uses we get a SocketTimeoutException: "SSL 4475 // handshake timed out" which we declare as 4476 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 4477 // having http second we will be using logic used for some time. 4478 URL newUrl; 4479 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 4480 newUrl = new URL(scheme, hostAddr.getHostAddress(), 4481 orgUri.getPath()); 4482 log("isMobileOk: newUrl=" + newUrl); 4483 4484 HttpURLConnection urlConn = null; 4485 try { 4486 // Open the connection set the request headers and get the response 4487 urlConn = (HttpURLConnection)newUrl.openConnection( 4488 java.net.Proxy.NO_PROXY); 4489 if (scheme.equals("https")) { 4490 ((HttpsURLConnection)urlConn).setHostnameVerifier( 4491 new CheckMpHostnameVerifier(orgUri)); 4492 } 4493 urlConn.setInstanceFollowRedirects(false); 4494 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 4495 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 4496 urlConn.setUseCaches(false); 4497 urlConn.setAllowUserInteraction(false); 4498 // Set the "Connection" to "Close" as by default "Keep-Alive" 4499 // is used which is useless in this case. 4500 urlConn.setRequestProperty("Connection", "close"); 4501 int responseCode = urlConn.getResponseCode(); 4502 4503 // For debug display the headers 4504 Map<String, List<String>> headers = urlConn.getHeaderFields(); 4505 log("isMobileOk: headers=" + headers); 4506 4507 // Close the connection 4508 urlConn.disconnect(); 4509 urlConn = null; 4510 4511 if (mTestingFailures) { 4512 // Pretend no connection, this tests using http and https 4513 result = CMP_RESULT_CODE_NO_CONNECTION; 4514 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 4515 continue; 4516 } 4517 4518 if (responseCode == 204) { 4519 // Return 4520 result = CMP_RESULT_CODE_CONNECTABLE; 4521 log("isMobileOk: X got expected responseCode=" + responseCode 4522 + " result=" + result); 4523 return result; 4524 } else { 4525 // Retry to be sure this was redirected, we've gotten 4526 // occasions where a server returned 200 even though 4527 // the device didn't have a "warm" sim. 4528 log("isMobileOk: not expected responseCode=" + responseCode); 4529 // TODO - it would be nice in the single-address case to do 4530 // another DNS resolve here, but flushing the cache is a bit 4531 // heavy-handed. 4532 result = CMP_RESULT_CODE_REDIRECTED; 4533 } 4534 } catch (Exception e) { 4535 log("isMobileOk: HttpURLConnection Exception" + e); 4536 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 4537 if (urlConn != null) { 4538 urlConn.disconnect(); 4539 urlConn = null; 4540 } 4541 sleep(NET_ERROR_SLEEP_SEC); 4542 continue; 4543 } 4544 } 4545 log("isMobileOk: X loops|timed out result=" + result); 4546 return result; 4547 } catch (Exception e) { 4548 log("isMobileOk: Exception e=" + e); 4549 continue; 4550 } 4551 } 4552 log("isMobileOk: timed out"); 4553 } finally { 4554 log("isMobileOk: F stop hipri"); 4555 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 4556 mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4557 Phone.FEATURE_ENABLE_HIPRI); 4558 4559 // Wait for hipri to disconnect. 4560 long endTime = SystemClock.elapsedRealtime() + 5000; 4561 4562 while(SystemClock.elapsedRealtime() < endTime) { 4563 NetworkInfo.State state = mCs 4564 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4565 if (state != NetworkInfo.State.DISCONNECTED) { 4566 if (VDBG) { 4567 log("isMobileOk: connected ni=" + 4568 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4569 } 4570 sleep(POLLING_SLEEP_SEC); 4571 continue; 4572 } 4573 } 4574 4575 log("isMobileOk: X result=" + result); 4576 } 4577 return result; 4578 } 4579 4580 @Override 4581 protected Integer doInBackground(Params... params) { 4582 return isMobileOk(params[0]); 4583 } 4584 4585 @Override 4586 protected void onPostExecute(Integer result) { 4587 log("onPostExecute: result=" + result); 4588 if ((mParams != null) && (mParams.mCb != null)) { 4589 mParams.mCb.onComplete(result); 4590 } 4591 } 4592 4593 private String inetAddressesToString(InetAddress[] addresses) { 4594 StringBuffer sb = new StringBuffer(); 4595 boolean firstTime = true; 4596 for(InetAddress addr : addresses) { 4597 if (firstTime) { 4598 firstTime = false; 4599 } else { 4600 sb.append(","); 4601 } 4602 sb.append(addr); 4603 } 4604 return sb.toString(); 4605 } 4606 4607 private void printNetworkInfo() { 4608 boolean hasIccCard = mTm.hasIccCard(); 4609 int simState = mTm.getSimState(); 4610 log("hasIccCard=" + hasIccCard 4611 + " simState=" + simState); 4612 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 4613 if (ni != null) { 4614 log("ni.length=" + ni.length); 4615 for (NetworkInfo netInfo: ni) { 4616 log("netInfo=" + netInfo.toString()); 4617 } 4618 } else { 4619 log("no network info ni=null"); 4620 } 4621 } 4622 4623 /** 4624 * Sleep for a few seconds then return. 4625 * @param seconds 4626 */ 4627 private static void sleep(int seconds) { 4628 long stopTime = System.nanoTime() + (seconds * 1000000000); 4629 long sleepTime; 4630 while ((sleepTime = stopTime - System.nanoTime()) > 0) { 4631 try { 4632 Thread.sleep(sleepTime / 1000000); 4633 } catch (InterruptedException ignored) { 4634 } 4635 } 4636 } 4637 4638 private static void log(String s) { 4639 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 4640 } 4641 } 4642 4643 // TODO: Move to ConnectivityManager and make public? 4644 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 4645 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 4646 4647 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 4648 @Override 4649 public void onReceive(Context context, Intent intent) { 4650 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 4651 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 4652 } 4653 } 4654 }; 4655 4656 private void handleMobileProvisioningAction(String url) { 4657 // Mark notification as not visible 4658 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4659 4660 // Check airplane mode 4661 boolean isAirplaneModeOn = Settings.System.getInt(mContext.getContentResolver(), 4662 Settings.Global.AIRPLANE_MODE_ON, 0) == 1; 4663 // If provisioning network and not in airplane mode handle as a special case, 4664 // otherwise launch browser with the intent directly. 4665 if (mIsProvisioningNetwork.get() && !isAirplaneModeOn) { 4666 if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch"); 4667 mIsProvisioningNetwork.set(false); 4668// mIsStartingProvisioning.set(true); 4669// MobileDataStateTracker mdst = (MobileDataStateTracker) 4670// mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4671 // Radio was disabled on CMP_RESULT_CODE_PROVISIONING_NETWORK, enable it here 4672// mdst.setRadio(true); 4673// mdst.setEnableFailFastMobileData(DctConstants.ENABLED); 4674// mdst.enableMobileProvisioning(url); 4675 } else { 4676 if (DBG) log("handleMobileProvisioningAction: not prov network"); 4677 mIsProvisioningNetwork.set(false); 4678 // Check for apps that can handle provisioning first 4679 Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP); 4680 provisioningIntent.addCategory(TelephonyIntents.CATEGORY_MCCMNC_PREFIX 4681 + mTelephonyManager.getSimOperator()); 4682 if (mContext.getPackageManager().resolveActivity(provisioningIntent, 0 /* flags */) 4683 != null) { 4684 provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4685 Intent.FLAG_ACTIVITY_NEW_TASK); 4686 mContext.startActivity(provisioningIntent); 4687 } else { 4688 // If no apps exist, use standard URL ACTION_VIEW method 4689 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 4690 Intent.CATEGORY_APP_BROWSER); 4691 newIntent.setData(Uri.parse(url)); 4692 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4693 Intent.FLAG_ACTIVITY_NEW_TASK); 4694 try { 4695 mContext.startActivity(newIntent); 4696 } catch (ActivityNotFoundException e) { 4697 loge("handleMobileProvisioningAction: startActivity failed" + e); 4698 } 4699 } 4700 } 4701 } 4702 4703 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 4704 private volatile boolean mIsNotificationVisible = false; 4705 4706 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 4707 String url) { 4708 if (DBG) { 4709 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 4710 + " extraInfo=" + extraInfo + " url=" + url); 4711 } 4712 Intent intent = null; 4713 PendingIntent pendingIntent = null; 4714 if (visible) { 4715 switch (networkType) { 4716 case ConnectivityManager.TYPE_WIFI: 4717 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4718 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4719 Intent.FLAG_ACTIVITY_NEW_TASK); 4720 pendingIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4721 break; 4722 case ConnectivityManager.TYPE_MOBILE: 4723 case ConnectivityManager.TYPE_MOBILE_HIPRI: 4724 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 4725 intent.putExtra("EXTRA_URL", url); 4726 intent.setFlags(0); 4727 pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 4728 break; 4729 default: 4730 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4731 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4732 Intent.FLAG_ACTIVITY_NEW_TASK); 4733 pendingIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4734 break; 4735 } 4736 } 4737 // Concatenate the range of types onto the range of NetIDs. 4738 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 4739 setProvNotificationVisibleIntent(visible, id, networkType, extraInfo, pendingIntent); 4740 } 4741 4742 /** 4743 * Show or hide network provisioning notificaitons. 4744 * 4745 * @param id an identifier that uniquely identifies this notification. This must match 4746 * between show and hide calls. We use the NetID value but for legacy callers 4747 * we concatenate the range of types with the range of NetIDs. 4748 */ 4749 private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, 4750 String extraInfo, PendingIntent intent) { 4751 if (DBG) { 4752 log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + 4753 networkType + " extraInfo=" + extraInfo); 4754 } 4755 4756 Resources r = Resources.getSystem(); 4757 NotificationManager notificationManager = (NotificationManager) mContext 4758 .getSystemService(Context.NOTIFICATION_SERVICE); 4759 4760 if (visible) { 4761 CharSequence title; 4762 CharSequence details; 4763 int icon; 4764 Notification notification = new Notification(); 4765 switch (networkType) { 4766 case ConnectivityManager.TYPE_WIFI: 4767 title = r.getString(R.string.wifi_available_sign_in, 0); 4768 details = r.getString(R.string.network_available_sign_in_detailed, 4769 extraInfo); 4770 icon = R.drawable.stat_notify_wifi_in_range; 4771 break; 4772 case ConnectivityManager.TYPE_MOBILE: 4773 case ConnectivityManager.TYPE_MOBILE_HIPRI: 4774 title = r.getString(R.string.network_available_sign_in, 0); 4775 // TODO: Change this to pull from NetworkInfo once a printable 4776 // name has been added to it 4777 details = mTelephonyManager.getNetworkOperatorName(); 4778 icon = R.drawable.stat_notify_rssi_in_range; 4779 break; 4780 default: 4781 title = r.getString(R.string.network_available_sign_in, 0); 4782 details = r.getString(R.string.network_available_sign_in_detailed, 4783 extraInfo); 4784 icon = R.drawable.stat_notify_rssi_in_range; 4785 break; 4786 } 4787 4788 notification.when = 0; 4789 notification.icon = icon; 4790 notification.flags = Notification.FLAG_AUTO_CANCEL; 4791 notification.tickerText = title; 4792 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 4793 notification.contentIntent = intent; 4794 4795 try { 4796 notificationManager.notify(NOTIFICATION_ID, id, notification); 4797 } catch (NullPointerException npe) { 4798 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 4799 npe.printStackTrace(); 4800 } 4801 } else { 4802 try { 4803 notificationManager.cancel(NOTIFICATION_ID, id); 4804 } catch (NullPointerException npe) { 4805 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 4806 npe.printStackTrace(); 4807 } 4808 } 4809 mIsNotificationVisible = visible; 4810 } 4811 4812 /** Location to an updatable file listing carrier provisioning urls. 4813 * An example: 4814 * 4815 * <?xml version="1.0" encoding="utf-8"?> 4816 * <provisioningUrls> 4817 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 4818 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 4819 * </provisioningUrls> 4820 */ 4821 private static final String PROVISIONING_URL_PATH = 4822 "/data/misc/radio/provisioning_urls.xml"; 4823 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 4824 4825 /** XML tag for root element. */ 4826 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 4827 /** XML tag for individual url */ 4828 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 4829 /** XML tag for redirected url */ 4830 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 4831 /** XML attribute for mcc */ 4832 private static final String ATTR_MCC = "mcc"; 4833 /** XML attribute for mnc */ 4834 private static final String ATTR_MNC = "mnc"; 4835 4836 private static final int REDIRECTED_PROVISIONING = 1; 4837 private static final int PROVISIONING = 2; 4838 4839 private String getProvisioningUrlBaseFromFile(int type) { 4840 FileReader fileReader = null; 4841 XmlPullParser parser = null; 4842 Configuration config = mContext.getResources().getConfiguration(); 4843 String tagType; 4844 4845 switch (type) { 4846 case PROVISIONING: 4847 tagType = TAG_PROVISIONING_URL; 4848 break; 4849 case REDIRECTED_PROVISIONING: 4850 tagType = TAG_REDIRECTED_URL; 4851 break; 4852 default: 4853 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 4854 type); 4855 } 4856 4857 try { 4858 fileReader = new FileReader(mProvisioningUrlFile); 4859 parser = Xml.newPullParser(); 4860 parser.setInput(fileReader); 4861 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 4862 4863 while (true) { 4864 XmlUtils.nextElement(parser); 4865 4866 String element = parser.getName(); 4867 if (element == null) break; 4868 4869 if (element.equals(tagType)) { 4870 String mcc = parser.getAttributeValue(null, ATTR_MCC); 4871 try { 4872 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 4873 String mnc = parser.getAttributeValue(null, ATTR_MNC); 4874 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 4875 parser.next(); 4876 if (parser.getEventType() == XmlPullParser.TEXT) { 4877 return parser.getText(); 4878 } 4879 } 4880 } 4881 } catch (NumberFormatException e) { 4882 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 4883 } 4884 } 4885 } 4886 return null; 4887 } catch (FileNotFoundException e) { 4888 loge("Carrier Provisioning Urls file not found"); 4889 } catch (XmlPullParserException e) { 4890 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 4891 } catch (IOException e) { 4892 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 4893 } finally { 4894 if (fileReader != null) { 4895 try { 4896 fileReader.close(); 4897 } catch (IOException e) {} 4898 } 4899 } 4900 return null; 4901 } 4902 4903 @Override 4904 public String getMobileRedirectedProvisioningUrl() { 4905 enforceConnectivityInternalPermission(); 4906 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 4907 if (TextUtils.isEmpty(url)) { 4908 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 4909 } 4910 return url; 4911 } 4912 4913 @Override 4914 public String getMobileProvisioningUrl() { 4915 enforceConnectivityInternalPermission(); 4916 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 4917 if (TextUtils.isEmpty(url)) { 4918 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 4919 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 4920 } else { 4921 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 4922 } 4923 // populate the iccid, imei and phone number in the provisioning url. 4924 if (!TextUtils.isEmpty(url)) { 4925 String phoneNumber = mTelephonyManager.getLine1Number(); 4926 if (TextUtils.isEmpty(phoneNumber)) { 4927 phoneNumber = "0000000000"; 4928 } 4929 url = String.format(url, 4930 mTelephonyManager.getSimSerialNumber() /* ICCID */, 4931 mTelephonyManager.getDeviceId() /* IMEI */, 4932 phoneNumber /* Phone numer */); 4933 } 4934 4935 return url; 4936 } 4937 4938 @Override 4939 public void setProvisioningNotificationVisible(boolean visible, int networkType, 4940 String extraInfo, String url) { 4941 enforceConnectivityInternalPermission(); 4942 setProvNotificationVisible(visible, networkType, extraInfo, url); 4943 } 4944 4945 @Override 4946 public void setAirplaneMode(boolean enable) { 4947 enforceConnectivityInternalPermission(); 4948 final long ident = Binder.clearCallingIdentity(); 4949 try { 4950 final ContentResolver cr = mContext.getContentResolver(); 4951 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 4952 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 4953 intent.putExtra("state", enable); 4954 mContext.sendBroadcast(intent); 4955 } finally { 4956 Binder.restoreCallingIdentity(ident); 4957 } 4958 } 4959 4960 private void onUserStart(int userId) { 4961 synchronized(mVpns) { 4962 Vpn userVpn = mVpns.get(userId); 4963 if (userVpn != null) { 4964 loge("Starting user already has a VPN"); 4965 return; 4966 } 4967 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, this, userId); 4968 mVpns.put(userId, userVpn); 4969 } 4970 } 4971 4972 private void onUserStop(int userId) { 4973 synchronized(mVpns) { 4974 Vpn userVpn = mVpns.get(userId); 4975 if (userVpn == null) { 4976 loge("Stopping user has no VPN"); 4977 return; 4978 } 4979 mVpns.delete(userId); 4980 } 4981 } 4982 4983 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 4984 @Override 4985 public void onReceive(Context context, Intent intent) { 4986 final String action = intent.getAction(); 4987 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 4988 if (userId == UserHandle.USER_NULL) return; 4989 4990 if (Intent.ACTION_USER_STARTING.equals(action)) { 4991 onUserStart(userId); 4992 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 4993 onUserStop(userId); 4994 } 4995 } 4996 }; 4997 4998 @Override 4999 public LinkQualityInfo getLinkQualityInfo(int networkType) { 5000 enforceAccessPermission(); 5001 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 5002 return mNetTrackers[networkType].getLinkQualityInfo(); 5003 } else { 5004 return null; 5005 } 5006 } 5007 5008 @Override 5009 public LinkQualityInfo getActiveLinkQualityInfo() { 5010 enforceAccessPermission(); 5011 if (isNetworkTypeValid(mActiveDefaultNetwork) && 5012 mNetTrackers[mActiveDefaultNetwork] != null) { 5013 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 5014 } else { 5015 return null; 5016 } 5017 } 5018 5019 @Override 5020 public LinkQualityInfo[] getAllLinkQualityInfo() { 5021 enforceAccessPermission(); 5022 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 5023 for (NetworkStateTracker tracker : mNetTrackers) { 5024 if (tracker != null) { 5025 LinkQualityInfo li = tracker.getLinkQualityInfo(); 5026 if (li != null) { 5027 result.add(li); 5028 } 5029 } 5030 } 5031 5032 return result.toArray(new LinkQualityInfo[result.size()]); 5033 } 5034 5035 /* Infrastructure for network sampling */ 5036 5037 private void handleNetworkSamplingTimeout() { 5038 5039 log("Sampling interval elapsed, updating statistics .."); 5040 5041 // initialize list of interfaces .. 5042 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 5043 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 5044 for (NetworkStateTracker tracker : mNetTrackers) { 5045 if (tracker != null) { 5046 String ifaceName = tracker.getNetworkInterfaceName(); 5047 if (ifaceName != null) { 5048 mapIfaceToSample.put(ifaceName, null); 5049 } 5050 } 5051 } 5052 5053 // Read samples for all interfaces 5054 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 5055 5056 // process samples for all networks 5057 for (NetworkStateTracker tracker : mNetTrackers) { 5058 if (tracker != null) { 5059 String ifaceName = tracker.getNetworkInterfaceName(); 5060 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 5061 if (ss != null) { 5062 // end the previous sampling cycle 5063 tracker.stopSampling(ss); 5064 // start a new sampling cycle .. 5065 tracker.startSampling(ss); 5066 } 5067 } 5068 } 5069 5070 log("Done."); 5071 5072 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 5073 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 5074 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 5075 5076 if (DBG) log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 5077 5078 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 5079 } 5080 5081 /** 5082 * Sets a network sampling alarm. 5083 */ 5084 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 5085 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 5086 int alarmType; 5087 if (Resources.getSystem().getBoolean( 5088 R.bool.config_networkSamplingWakesDevice)) { 5089 alarmType = AlarmManager.ELAPSED_REALTIME_WAKEUP; 5090 } else { 5091 alarmType = AlarmManager.ELAPSED_REALTIME; 5092 } 5093 mAlarmManager.set(alarmType, wakeupTime, intent); 5094 } 5095 5096 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 5097 new HashMap<Messenger, NetworkFactoryInfo>(); 5098 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 5099 new HashMap<NetworkRequest, NetworkRequestInfo>(); 5100 5101 private static class NetworkFactoryInfo { 5102 public final String name; 5103 public final Messenger messenger; 5104 public final AsyncChannel asyncChannel; 5105 5106 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 5107 this.name = name; 5108 this.messenger = messenger; 5109 this.asyncChannel = asyncChannel; 5110 } 5111 } 5112 5113 private class NetworkRequestInfo implements IBinder.DeathRecipient { 5114 static final boolean REQUEST = true; 5115 static final boolean LISTEN = false; 5116 5117 final NetworkRequest request; 5118 IBinder mBinder; 5119 final int mPid; 5120 final int mUid; 5121 final Messenger messenger; 5122 final boolean isRequest; 5123 5124 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 5125 super(); 5126 messenger = m; 5127 request = r; 5128 mBinder = binder; 5129 mPid = getCallingPid(); 5130 mUid = getCallingUid(); 5131 this.isRequest = isRequest; 5132 5133 try { 5134 mBinder.linkToDeath(this, 0); 5135 } catch (RemoteException e) { 5136 binderDied(); 5137 } 5138 } 5139 5140 void unlinkDeathRecipient() { 5141 mBinder.unlinkToDeath(this, 0); 5142 } 5143 5144 public void binderDied() { 5145 log("ConnectivityService NetworkRequestInfo binderDied(" + 5146 request + ", " + mBinder + ")"); 5147 releaseNetworkRequest(request); 5148 } 5149 5150 public String toString() { 5151 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 5152 mPid + " for " + request; 5153 } 5154 } 5155 5156 @Override 5157 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 5158 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 5159 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 5160 == false) { 5161 enforceConnectivityInternalPermission(); 5162 } else { 5163 enforceChangePermission(); 5164 } 5165 5166 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 5167 throw new IllegalArgumentException("Bad timeout specified"); 5168 } 5169 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 5170 networkCapabilities), legacyType, nextNetworkRequestId()); 5171 if (DBG) log("requestNetwork for " + networkRequest); 5172 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 5173 NetworkRequestInfo.REQUEST); 5174 5175 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 5176 if (timeoutMs > 0) { 5177 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 5178 nri), timeoutMs); 5179 } 5180 return networkRequest; 5181 } 5182 5183 @Override 5184 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 5185 PendingIntent operation) { 5186 // TODO 5187 return null; 5188 } 5189 5190 @Override 5191 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 5192 Messenger messenger, IBinder binder) { 5193 enforceAccessPermission(); 5194 5195 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 5196 networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 5197 if (DBG) log("listenForNetwork for " + networkRequest); 5198 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 5199 NetworkRequestInfo.LISTEN); 5200 5201 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 5202 return networkRequest; 5203 } 5204 5205 @Override 5206 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 5207 PendingIntent operation) { 5208 } 5209 5210 @Override 5211 public void releaseNetworkRequest(NetworkRequest networkRequest) { 5212 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 5213 0, networkRequest)); 5214 } 5215 5216 @Override 5217 public void registerNetworkFactory(Messenger messenger, String name) { 5218 enforceConnectivityInternalPermission(); 5219 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 5220 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 5221 } 5222 5223 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 5224 if (VDBG) log("Got NetworkFactory Messenger for " + nfi.name); 5225 mNetworkFactoryInfos.put(nfi.messenger, nfi); 5226 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 5227 } 5228 5229 @Override 5230 public void unregisterNetworkFactory(Messenger messenger) { 5231 enforceConnectivityInternalPermission(); 5232 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 5233 } 5234 5235 private void handleUnregisterNetworkFactory(Messenger messenger) { 5236 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 5237 if (nfi == null) { 5238 if (VDBG) log("Failed to find Messenger in unregisterNetworkFactory"); 5239 return; 5240 } 5241 if (VDBG) log("unregisterNetworkFactory for " + nfi.name); 5242 } 5243 5244 /** 5245 * NetworkAgentInfo supporting a request by requestId. 5246 * These have already been vetted (their Capabilities satisfy the request) 5247 * and the are the highest scored network available. 5248 * the are keyed off the Requests requestId. 5249 */ 5250 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 5251 new SparseArray<NetworkAgentInfo>(); 5252 5253 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 5254 new SparseArray<NetworkAgentInfo>(); 5255 5256 // NetworkAgentInfo keyed off its connecting messenger 5257 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 5258 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 5259 new HashMap<Messenger, NetworkAgentInfo>(); 5260 5261 private final NetworkRequest mDefaultRequest; 5262 5263 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 5264 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 5265 int currentScore, NetworkMisc networkMisc) { 5266 enforceConnectivityInternalPermission(); 5267 5268 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), nextNetId(), 5269 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 5270 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler, 5271 networkMisc); 5272 if (VDBG) log("registerNetworkAgent " + nai); 5273 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 5274 } 5275 5276 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 5277 if (VDBG) log("Got NetworkAgent Messenger"); 5278 mNetworkAgentInfos.put(na.messenger, na); 5279 synchronized (mNetworkForNetId) { 5280 mNetworkForNetId.put(na.network.netId, na); 5281 } 5282 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 5283 NetworkInfo networkInfo = na.networkInfo; 5284 na.networkInfo = null; 5285 updateNetworkInfo(na, networkInfo); 5286 } 5287 5288 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 5289 LinkProperties newLp = networkAgent.linkProperties; 5290 int netId = networkAgent.network.netId; 5291 5292 updateInterfaces(newLp, oldLp, netId); 5293 updateMtu(newLp, oldLp); 5294 // TODO - figure out what to do for clat 5295// for (LinkProperties lp : newLp.getStackedLinks()) { 5296// updateMtu(lp, null); 5297// } 5298 updateRoutes(newLp, oldLp, netId); 5299 updateDnses(newLp, oldLp, netId); 5300 updateClat(newLp, oldLp, networkAgent); 5301 } 5302 5303 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo na) { 5304 // Update 464xlat state. 5305 if (mClat.requiresClat(na)) { 5306 5307 // If the connection was previously using clat, but is not using it now, stop the clat 5308 // daemon. Normally, this happens automatically when the connection disconnects, but if 5309 // the disconnect is not reported, or if the connection's LinkProperties changed for 5310 // some other reason (e.g., handoff changes the IP addresses on the link), it would 5311 // still be running. If it's not running, then stopping it is a no-op. 5312 if (Nat464Xlat.isRunningClat(oldLp) && !Nat464Xlat.isRunningClat(newLp)) { 5313 mClat.stopClat(); 5314 } 5315 // If the link requires clat to be running, then start the daemon now. 5316 if (na.networkInfo.isConnected()) { 5317 mClat.startClat(na); 5318 } else { 5319 mClat.stopClat(); 5320 } 5321 } 5322 } 5323 5324 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 5325 CompareResult<String> interfaceDiff = new CompareResult<String>(); 5326 if (oldLp != null) { 5327 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 5328 } else if (newLp != null) { 5329 interfaceDiff.added = newLp.getAllInterfaceNames(); 5330 } 5331 for (String iface : interfaceDiff.added) { 5332 try { 5333 mNetd.addInterfaceToNetwork(iface, netId); 5334 } catch (Exception e) { 5335 loge("Exception adding interface: " + e); 5336 } 5337 } 5338 for (String iface : interfaceDiff.removed) { 5339 try { 5340 mNetd.removeInterfaceFromNetwork(iface, netId); 5341 } catch (Exception e) { 5342 loge("Exception removing interface: " + e); 5343 } 5344 } 5345 } 5346 5347 private void updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 5348 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 5349 if (oldLp != null) { 5350 routeDiff = oldLp.compareAllRoutes(newLp); 5351 } else if (newLp != null) { 5352 routeDiff.added = newLp.getAllRoutes(); 5353 } 5354 5355 // add routes before removing old in case it helps with continuous connectivity 5356 5357 // do this twice, adding non-nexthop routes first, then routes they are dependent on 5358 for (RouteInfo route : routeDiff.added) { 5359 if (route.hasGateway()) continue; 5360 try { 5361 mNetd.addRoute(netId, route); 5362 } catch (Exception e) { 5363 loge("Exception in addRoute for non-gateway: " + e); 5364 } 5365 } 5366 for (RouteInfo route : routeDiff.added) { 5367 if (route.hasGateway() == false) continue; 5368 try { 5369 mNetd.addRoute(netId, route); 5370 } catch (Exception e) { 5371 loge("Exception in addRoute for gateway: " + e); 5372 } 5373 } 5374 5375 for (RouteInfo route : routeDiff.removed) { 5376 try { 5377 mNetd.removeRoute(netId, route); 5378 } catch (Exception e) { 5379 loge("Exception in removeRoute: " + e); 5380 } 5381 } 5382 } 5383 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId) { 5384 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 5385 Collection<InetAddress> dnses = newLp.getDnsServers(); 5386 if (dnses.size() == 0 && mDefaultDns != null) { 5387 dnses = new ArrayList(); 5388 dnses.add(mDefaultDns); 5389 if (DBG) { 5390 loge("no dns provided for netId " + netId + ", so using defaults"); 5391 } 5392 } 5393 try { 5394 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 5395 newLp.getDomains()); 5396 } catch (Exception e) { 5397 loge("Exception in setDnsServersForNetwork: " + e); 5398 } 5399 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 5400 if (defaultNai != null && defaultNai.network.netId == netId) { 5401 setDefaultDnsSystemProperties(dnses); 5402 } 5403 } 5404 } 5405 5406 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 5407 int last = 0; 5408 for (InetAddress dns : dnses) { 5409 ++last; 5410 String key = "net.dns" + last; 5411 String value = dns.getHostAddress(); 5412 SystemProperties.set(key, value); 5413 } 5414 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 5415 String key = "net.dns" + i; 5416 SystemProperties.set(key, ""); 5417 } 5418 mNumDnsEntries = last; 5419 } 5420 5421 5422 private void updateCapabilities(NetworkAgentInfo networkAgent, 5423 NetworkCapabilities networkCapabilities) { 5424 // TODO - what else here? Verify still satisfies everybody? 5425 // Check if satisfies somebody new? call callbacks? 5426 synchronized (networkAgent) { 5427 networkAgent.networkCapabilities = networkCapabilities; 5428 } 5429 } 5430 5431 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 5432 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 5433 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 5434 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 5435 networkRequest); 5436 } 5437 } 5438 5439 private void callCallbackForRequest(NetworkRequestInfo nri, 5440 NetworkAgentInfo networkAgent, int notificationType) { 5441 if (nri.messenger == null) return; // Default request has no msgr 5442 Object o; 5443 int a1 = 0; 5444 int a2 = 0; 5445 switch (notificationType) { 5446 case ConnectivityManager.CALLBACK_LOSING: 5447 a1 = 30 * 1000; // TODO - read this from NetworkMonitor 5448 // fall through 5449 case ConnectivityManager.CALLBACK_PRECHECK: 5450 case ConnectivityManager.CALLBACK_AVAILABLE: 5451 case ConnectivityManager.CALLBACK_LOST: 5452 case ConnectivityManager.CALLBACK_CAP_CHANGED: 5453 case ConnectivityManager.CALLBACK_IP_CHANGED: { 5454 o = new NetworkRequest(nri.request); 5455 a2 = networkAgent.network.netId; 5456 break; 5457 } 5458 case ConnectivityManager.CALLBACK_UNAVAIL: 5459 case ConnectivityManager.CALLBACK_RELEASED: { 5460 o = new NetworkRequest(nri.request); 5461 break; 5462 } 5463 default: { 5464 loge("Unknown notificationType " + notificationType); 5465 return; 5466 } 5467 } 5468 Message msg = Message.obtain(); 5469 msg.arg1 = a1; 5470 msg.arg2 = a2; 5471 msg.obj = o; 5472 msg.what = notificationType; 5473 try { 5474 if (VDBG) log("sending notification " + notificationType + " for " + nri.request); 5475 nri.messenger.send(msg); 5476 } catch (RemoteException e) { 5477 // may occur naturally in the race of binder death. 5478 loge("RemoteException caught trying to send a callback msg for " + nri.request); 5479 } 5480 } 5481 5482 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 5483 if (oldNetwork == null) { 5484 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 5485 return; 5486 } 5487 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 5488 if (DBG) { 5489 if (oldNetwork.networkRequests.size() != 0) { 5490 loge("Dead network still had " + oldNetwork.networkRequests.size() + " requests"); 5491 } 5492 } 5493 oldNetwork.asyncChannel.disconnect(); 5494 } 5495 5496 private void makeDefault(NetworkAgentInfo newNetwork) { 5497 if (VDBG) log("Switching to new default network: " + newNetwork); 5498 setupDataActivityTracking(newNetwork); 5499 try { 5500 mNetd.setDefaultNetId(newNetwork.network.netId); 5501 } catch (Exception e) { 5502 loge("Exception setting default network :" + e); 5503 } 5504 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 5505 } 5506 5507 private void handleConnectionValidated(NetworkAgentInfo newNetwork) { 5508 if (newNetwork == null) { 5509 loge("Unknown NetworkAgentInfo in handleConnectionValidated"); 5510 return; 5511 } 5512 boolean keep = newNetwork.isVPN(); 5513 boolean isNewDefault = false; 5514 if (DBG) log("handleConnectionValidated for "+newNetwork.name()); 5515 // check if any NetworkRequest wants this NetworkAgent 5516 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 5517 if (VDBG) log(" new Network has: " + newNetwork.networkCapabilities); 5518 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 5519 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 5520 if (newNetwork == currentNetwork) { 5521 if (VDBG) log("Network " + newNetwork.name() + " was already satisfying" + 5522 " request " + nri.request.requestId + ". No change."); 5523 keep = true; 5524 continue; 5525 } 5526 5527 // check if it satisfies the NetworkCapabilities 5528 if (VDBG) log(" checking if request is satisfied: " + nri.request); 5529 if (nri.request.networkCapabilities.satisfiedByNetworkCapabilities( 5530 newNetwork.networkCapabilities)) { 5531 // next check if it's better than any current network we're using for 5532 // this request 5533 if (VDBG) { 5534 log("currentScore = " + 5535 (currentNetwork != null ? currentNetwork.currentScore : 0) + 5536 ", newScore = " + newNetwork.currentScore); 5537 } 5538 if (currentNetwork == null || 5539 currentNetwork.currentScore < newNetwork.currentScore) { 5540 if (currentNetwork != null) { 5541 if (VDBG) log(" accepting network in place of " + currentNetwork.name()); 5542 currentNetwork.networkRequests.remove(nri.request.requestId); 5543 currentNetwork.networkLingered.add(nri.request); 5544 affectedNetworks.add(currentNetwork); 5545 } else { 5546 if (VDBG) log(" accepting network in place of null"); 5547 } 5548 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 5549 newNetwork.addRequest(nri.request); 5550 int legacyType = nri.request.legacyType; 5551 if (legacyType != TYPE_NONE) { 5552 mLegacyTypeTracker.add(legacyType, newNetwork); 5553 } 5554 keep = true; 5555 // TODO - this could get expensive if we have alot of requests for this 5556 // network. Think about if there is a way to reduce this. Push 5557 // netid->request mapping to each factory? 5558 sendUpdatedScoreToFactories(nri.request, newNetwork.currentScore); 5559 if (mDefaultRequest.requestId == nri.request.requestId) { 5560 isNewDefault = true; 5561 updateActiveDefaultNetwork(newNetwork); 5562 if (newNetwork.linkProperties != null) { 5563 setDefaultDnsSystemProperties( 5564 newNetwork.linkProperties.getDnsServers()); 5565 } else { 5566 setDefaultDnsSystemProperties(new ArrayList<InetAddress>()); 5567 } 5568 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 5569 } 5570 } 5571 } 5572 } 5573 for (NetworkAgentInfo nai : affectedNetworks) { 5574 boolean teardown = !nai.isVPN(); 5575 for (int i = 0; i < nai.networkRequests.size() && teardown; i++) { 5576 NetworkRequest nr = nai.networkRequests.valueAt(i); 5577 try { 5578 if (mNetworkRequests.get(nr).isRequest) { 5579 teardown = false; 5580 } 5581 } catch (Exception e) { 5582 loge("Request " + nr + " not found in mNetworkRequests."); 5583 loge(" it came from request list of " + nai.name()); 5584 } 5585 } 5586 if (teardown) { 5587 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 5588 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 5589 } else { 5590 // not going to linger, so kill the list of linger networks.. only 5591 // notify them of linger if it happens as the result of gaining another, 5592 // but if they transition and old network stays up, don't tell them of linger 5593 // or very delayed loss 5594 nai.networkLingered.clear(); 5595 if (VDBG) log("Lingered for " + nai.name() + " cleared"); 5596 } 5597 } 5598 if (keep) { 5599 if (isNewDefault) { 5600 makeDefault(newNetwork); 5601 synchronized (ConnectivityService.this) { 5602 // have a new default network, release the transition wakelock in 5603 // a second if it's held. The second pause is to allow apps 5604 // to reconnect over the new network 5605 if (mNetTransitionWakeLock.isHeld()) { 5606 mHandler.sendMessageDelayed(mHandler.obtainMessage( 5607 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 5608 mNetTransitionWakeLockSerialNumber, 0), 5609 1000); 5610 } 5611 } 5612 5613 // this will cause us to come up initially as unconnected and switching 5614 // to connected after our normal pause unless somebody reports us as 5615 // really disconnected 5616 mDefaultInetConditionPublished = 0; 5617 mDefaultConnectionSequence++; 5618 mInetConditionChangeInFlight = false; 5619 // TODO - read the tcp buffer size config string from somewhere 5620 // updateNetworkSettings(); 5621 } 5622 // notify battery stats service about this network 5623 try { 5624 BatteryStatsService.getService().noteNetworkInterfaceType( 5625 newNetwork.linkProperties.getInterfaceName(), 5626 newNetwork.networkInfo.getType()); 5627 } catch (RemoteException e) { } 5628 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 5629 } else { 5630 if (DBG && newNetwork.networkRequests.size() != 0) { 5631 loge("tearing down network with live requests:"); 5632 for (int i=0; i < newNetwork.networkRequests.size(); i++) { 5633 loge(" " + newNetwork.networkRequests.valueAt(i)); 5634 } 5635 } 5636 if (VDBG) log("Validated network turns out to be unwanted. Tear it down."); 5637 newNetwork.asyncChannel.disconnect(); 5638 } 5639 } 5640 5641 5642 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 5643 NetworkInfo.State state = newInfo.getState(); 5644 NetworkInfo oldInfo = null; 5645 synchronized (networkAgent) { 5646 oldInfo = networkAgent.networkInfo; 5647 networkAgent.networkInfo = newInfo; 5648 } 5649 if (networkAgent.isVPN() && mLockdownTracker != null) { 5650 mLockdownTracker.onVpnStateChanged(newInfo); 5651 } 5652 5653 if (oldInfo != null && oldInfo.getState() == state) { 5654 if (VDBG) log("ignoring duplicate network state non-change"); 5655 return; 5656 } 5657 if (DBG) { 5658 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 5659 (oldInfo == null ? "null" : oldInfo.getState()) + 5660 " to " + state); 5661 } 5662 5663 if (state == NetworkInfo.State.CONNECTED) { 5664 try { 5665 // This is likely caused by the fact that this network already 5666 // exists. An example is when a network goes from CONNECTED to 5667 // CONNECTING and back (like wifi on DHCP renew). 5668 // TODO: keep track of which networks we've created, or ask netd 5669 // to tell us whether we've already created this network or not. 5670 if (networkAgent.isVPN()) { 5671 mNetd.createVirtualNetwork(networkAgent.network.netId, 5672 !networkAgent.linkProperties.getDnsServers().isEmpty(), 5673 (networkAgent.networkMisc == null || 5674 !networkAgent.networkMisc.allowBypass)); 5675 } else { 5676 mNetd.createPhysicalNetwork(networkAgent.network.netId); 5677 } 5678 } catch (Exception e) { 5679 loge("Error creating network " + networkAgent.network.netId + ": " 5680 + e.getMessage()); 5681 return; 5682 } 5683 5684 updateLinkProperties(networkAgent, null); 5685 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 5686 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 5687 if (networkAgent.isVPN()) { 5688 // Temporarily disable the default proxy (not global). 5689 synchronized (mProxyLock) { 5690 if (!mDefaultProxyDisabled) { 5691 mDefaultProxyDisabled = true; 5692 if (mGlobalProxy == null && mDefaultProxy != null) { 5693 sendProxyBroadcast(null); 5694 } 5695 } 5696 } 5697 // TODO: support proxy per network. 5698 } 5699 // Make default network if we have no default. Any network is better than no network. 5700 if (mNetworkForRequestId.get(mDefaultRequest.requestId) == null && 5701 networkAgent.isVPN() == false && 5702 mDefaultRequest.networkCapabilities.satisfiedByNetworkCapabilities( 5703 networkAgent.networkCapabilities)) { 5704 makeDefault(networkAgent); 5705 } 5706 } else if (state == NetworkInfo.State.DISCONNECTED || 5707 state == NetworkInfo.State.SUSPENDED) { 5708 networkAgent.asyncChannel.disconnect(); 5709 if (networkAgent.isVPN()) { 5710 synchronized (mProxyLock) { 5711 if (mDefaultProxyDisabled) { 5712 mDefaultProxyDisabled = false; 5713 if (mGlobalProxy == null && mDefaultProxy != null) { 5714 sendProxyBroadcast(mDefaultProxy); 5715 } 5716 } 5717 } 5718 } 5719 } 5720 } 5721 5722 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 5723 if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); 5724 5725 nai.currentScore = score; 5726 5727 // TODO - This will not do the right thing if this network is lowering 5728 // its score and has requests that can be served by other 5729 // currently-active networks, or if the network is increasing its 5730 // score and other networks have requests that can be better served 5731 // by this network. 5732 // 5733 // Really we want to see if any of our requests migrate to other 5734 // active/lingered networks and if any other requests migrate to us (depending 5735 // on increasing/decreasing currentScore. That's a bit of work and probably our 5736 // score checking/network allocation code needs to be modularized so we can understand 5737 // (see handleConnectionValided for an example). 5738 // 5739 // As a first order approx, lets just advertise the new score to factories. If 5740 // somebody can beat it they will nominate a network and our normal net replacement 5741 // code will fire. 5742 for (int i = 0; i < nai.networkRequests.size(); i++) { 5743 NetworkRequest nr = nai.networkRequests.valueAt(i); 5744 sendUpdatedScoreToFactories(nr, score); 5745 } 5746 } 5747 5748 // notify only this one new request of the current state 5749 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 5750 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 5751 // TODO - read state from monitor to decide what to send. 5752// if (nai.networkMonitor.isLingering()) { 5753// notifyType = NetworkCallbacks.LOSING; 5754// } else if (nai.networkMonitor.isEvaluating()) { 5755// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 5756// } 5757 callCallbackForRequest(nri, nai, notifyType); 5758 } 5759 5760 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { 5761 if (connected) { 5762 NetworkInfo info = new NetworkInfo(nai.networkInfo); 5763 info.setType(type); 5764 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 5765 } else { 5766 NetworkInfo info = new NetworkInfo(nai.networkInfo); 5767 info.setType(type); 5768 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 5769 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 5770 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 5771 if (info.isFailover()) { 5772 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 5773 nai.networkInfo.setFailover(false); 5774 } 5775 if (info.getReason() != null) { 5776 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 5777 } 5778 if (info.getExtraInfo() != null) { 5779 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 5780 } 5781 NetworkAgentInfo newDefaultAgent = null; 5782 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 5783 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 5784 if (newDefaultAgent != null) { 5785 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 5786 newDefaultAgent.networkInfo); 5787 } else { 5788 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 5789 } 5790 } 5791 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 5792 mDefaultInetConditionPublished); 5793 final Intent immediateIntent = new Intent(intent); 5794 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 5795 sendStickyBroadcast(immediateIntent); 5796 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 5797 if (newDefaultAgent != null) { 5798 sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo, 5799 getConnectivityChangeDelay()); 5800 } 5801 } 5802 } 5803 5804 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 5805 if (VDBG) log("notifyType " + notifyType + " for " + networkAgent.name()); 5806 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 5807 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 5808 NetworkRequestInfo nri = mNetworkRequests.get(nr); 5809 if (VDBG) log(" sending notification for " + nr); 5810 callCallbackForRequest(nri, networkAgent, notifyType); 5811 } 5812 } 5813 5814 private LinkProperties getLinkPropertiesForTypeInternal(int networkType) { 5815 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 5816 if (nai != null) { 5817 synchronized (nai) { 5818 return new LinkProperties(nai.linkProperties); 5819 } 5820 } 5821 return new LinkProperties(); 5822 } 5823 5824 private NetworkInfo getNetworkInfoForType(int networkType) { 5825 if (!mLegacyTypeTracker.isTypeSupported(networkType)) 5826 return null; 5827 5828 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 5829 if (nai != null) { 5830 NetworkInfo result = new NetworkInfo(nai.networkInfo); 5831 result.setType(networkType); 5832 return result; 5833 } else { 5834 return new NetworkInfo(networkType, 0, "Unknown", ""); 5835 } 5836 } 5837 5838 private NetworkCapabilities getNetworkCapabilitiesForType(int networkType) { 5839 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 5840 if (nai != null) { 5841 synchronized (nai) { 5842 return new NetworkCapabilities(nai.networkCapabilities); 5843 } 5844 } 5845 return new NetworkCapabilities(); 5846 } 5847} 5848