ConnectivityService.java revision 3c44c99af500601fbb8ba6b8f71e5d930ca5e269
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.NetworkCallbackListener; 24import static android.net.ConnectivityManager.TYPE_BLUETOOTH; 25import static android.net.ConnectivityManager.TYPE_DUMMY; 26import static android.net.ConnectivityManager.TYPE_MOBILE; 27import static android.net.ConnectivityManager.TYPE_MOBILE_MMS; 28import static android.net.ConnectivityManager.TYPE_MOBILE_SUPL; 29import static android.net.ConnectivityManager.TYPE_MOBILE_DUN; 30import static android.net.ConnectivityManager.TYPE_MOBILE_FOTA; 31import static android.net.ConnectivityManager.TYPE_MOBILE_IMS; 32import static android.net.ConnectivityManager.TYPE_MOBILE_CBS; 33import static android.net.ConnectivityManager.TYPE_MOBILE_IA; 34import static android.net.ConnectivityManager.TYPE_MOBILE_HIPRI; 35import static android.net.ConnectivityManager.TYPE_NONE; 36import static android.net.ConnectivityManager.TYPE_WIFI; 37import static android.net.ConnectivityManager.TYPE_WIMAX; 38import static android.net.ConnectivityManager.TYPE_PROXY; 39import static android.net.ConnectivityManager.getNetworkTypeName; 40import static android.net.ConnectivityManager.isNetworkTypeValid; 41import static android.net.ConnectivityServiceProtocol.NetworkFactoryProtocol; 42import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 43import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 44 45import android.app.AlarmManager; 46import android.app.AppOpsManager; 47import android.app.Notification; 48import android.app.NotificationManager; 49import android.app.PendingIntent; 50import android.bluetooth.BluetoothTetheringDataTracker; 51import android.content.ActivityNotFoundException; 52import android.content.BroadcastReceiver; 53import android.content.ContentResolver; 54import android.content.Context; 55import android.content.ContextWrapper; 56import android.content.Intent; 57import android.content.IntentFilter; 58import android.content.pm.ApplicationInfo; 59import android.content.pm.PackageManager; 60import android.content.pm.PackageManager.NameNotFoundException; 61import android.content.res.Configuration; 62import android.content.res.Resources; 63import android.database.ContentObserver; 64import android.net.CaptivePortalTracker; 65import android.net.ConnectivityManager; 66import android.net.DummyDataStateTracker; 67import android.net.IConnectivityManager; 68import android.net.INetworkManagementEventObserver; 69import android.net.INetworkPolicyListener; 70import android.net.INetworkPolicyManager; 71import android.net.INetworkStatsService; 72import android.net.LinkAddress; 73import android.net.LinkProperties; 74import android.net.LinkProperties.CompareResult; 75import android.net.LinkQualityInfo; 76import android.net.MobileDataStateTracker; 77import android.net.Network; 78import android.net.NetworkAgent; 79import android.net.NetworkCapabilities; 80import android.net.NetworkConfig; 81import android.net.NetworkInfo; 82import android.net.NetworkInfo.DetailedState; 83import android.net.NetworkQuotaInfo; 84import android.net.NetworkRequest; 85import android.net.NetworkState; 86import android.net.NetworkStateTracker; 87import android.net.NetworkUtils; 88import android.net.Proxy; 89import android.net.ProxyDataTracker; 90import android.net.ProxyInfo; 91import android.net.RouteInfo; 92import android.net.SamplingDataTracker; 93import android.net.Uri; 94import android.net.wimax.WimaxManagerConstants; 95import android.os.AsyncTask; 96import android.os.Binder; 97import android.os.Build; 98import android.os.FileUtils; 99import android.os.Handler; 100import android.os.HandlerThread; 101import android.os.IBinder; 102import android.os.INetworkManagementService; 103import android.os.Looper; 104import android.os.Message; 105import android.os.Messenger; 106import android.os.ParcelFileDescriptor; 107import android.os.PowerManager; 108import android.os.Process; 109import android.os.RemoteException; 110import android.os.ServiceManager; 111import android.os.SystemClock; 112import android.os.SystemProperties; 113import android.os.UserHandle; 114import android.provider.Settings; 115import android.security.Credentials; 116import android.security.KeyStore; 117import android.telephony.TelephonyManager; 118import android.text.TextUtils; 119import android.util.Slog; 120import android.util.SparseArray; 121import android.util.SparseIntArray; 122import android.util.Xml; 123 124import com.android.internal.R; 125import com.android.internal.annotations.GuardedBy; 126import com.android.internal.net.LegacyVpnInfo; 127import com.android.internal.net.VpnConfig; 128import com.android.internal.net.VpnProfile; 129import com.android.internal.telephony.DctConstants; 130import com.android.internal.telephony.Phone; 131import com.android.internal.telephony.PhoneConstants; 132import com.android.internal.telephony.TelephonyIntents; 133import com.android.internal.util.AsyncChannel; 134import com.android.internal.util.IndentingPrintWriter; 135import com.android.internal.util.XmlUtils; 136import com.android.server.am.BatteryStatsService; 137import com.android.server.connectivity.DataConnectionStats; 138import com.android.server.connectivity.Nat464Xlat; 139import com.android.server.connectivity.NetworkAgentInfo; 140import com.android.server.connectivity.NetworkMonitor; 141import com.android.server.connectivity.PacManager; 142import com.android.server.connectivity.Tethering; 143import com.android.server.connectivity.Vpn; 144import com.android.server.net.BaseNetworkObserver; 145import com.android.server.net.LockdownVpnTracker; 146import com.google.android.collect.Lists; 147import com.google.android.collect.Sets; 148 149import dalvik.system.DexClassLoader; 150 151import org.xmlpull.v1.XmlPullParser; 152import org.xmlpull.v1.XmlPullParserException; 153 154import java.io.File; 155import java.io.FileDescriptor; 156import java.io.FileNotFoundException; 157import java.io.FileReader; 158import java.io.IOException; 159import java.io.PrintWriter; 160import java.lang.reflect.Constructor; 161import java.net.HttpURLConnection; 162import java.net.Inet4Address; 163import java.net.Inet6Address; 164import java.net.InetAddress; 165import java.net.URL; 166import java.net.UnknownHostException; 167import java.util.ArrayList; 168import java.util.Arrays; 169import java.util.Collection; 170import java.util.GregorianCalendar; 171import java.util.HashMap; 172import java.util.HashSet; 173import java.util.List; 174import java.util.Map; 175import java.util.Random; 176import java.util.concurrent.atomic.AtomicBoolean; 177import java.util.concurrent.atomic.AtomicInteger; 178 179import javax.net.ssl.HostnameVerifier; 180import javax.net.ssl.HttpsURLConnection; 181import javax.net.ssl.SSLSession; 182 183import static android.net.ConnectivityManager.INVALID_NET_ID; 184 185/** 186 * @hide 187 */ 188public class ConnectivityService extends IConnectivityManager.Stub { 189 private static final String TAG = "ConnectivityService"; 190 191 private static final boolean DBG = true; 192 private static final boolean VDBG = true; // STOPSHIP 193 194 // network sampling debugging 195 private static final boolean SAMPLE_DBG = false; 196 197 private static final boolean LOGD_RULES = false; 198 199 // TODO: create better separation between radio types and network types 200 201 // how long to wait before switching back to a radio's default network 202 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 203 // system property that can override the above value 204 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 205 "android.telephony.apn-restore"; 206 207 // Default value if FAIL_FAST_TIME_MS is not set 208 private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; 209 // system property that can override DEFAULT_FAIL_FAST_TIME_MS 210 private static final String FAIL_FAST_TIME_MS = 211 "persist.radio.fail_fast_time_ms"; 212 213 private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = 214 "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; 215 216 private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; 217 218 private PendingIntent mSampleIntervalElapsedIntent; 219 220 // Set network sampling interval at 12 minutes, this way, even if the timers get 221 // aggregated, it will fire at around 15 minutes, which should allow us to 222 // aggregate this timer with other timers (specially the socket keep alive timers) 223 private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 12 * 60); 224 225 // start network sampling a minute after booting ... 226 private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 60); 227 228 AlarmManager mAlarmManager; 229 230 // used in recursive route setting to add gateways for the host for which 231 // a host route was requested. 232 private static final int MAX_HOSTROUTE_CYCLE_COUNT = 10; 233 234 private Tethering mTethering; 235 236 private KeyStore mKeyStore; 237 238 @GuardedBy("mVpns") 239 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 240 private VpnCallback mVpnCallback = new VpnCallback(); 241 242 private boolean mLockdownEnabled; 243 private LockdownVpnTracker mLockdownTracker; 244 245 private Nat464Xlat mClat; 246 247 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 248 private Object mRulesLock = new Object(); 249 /** Currently active network rules by UID. */ 250 private SparseIntArray mUidRules = new SparseIntArray(); 251 /** Set of ifaces that are costly. */ 252 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 253 254 /** 255 * Sometimes we want to refer to the individual network state 256 * trackers separately, and sometimes we just want to treat them 257 * abstractly. 258 */ 259 private NetworkStateTracker mNetTrackers[]; 260 261 /** 262 * Holds references to all NetworkAgentInfos claiming to support the legacy 263 * NetworkType. We used to have a static set of of NetworkStateTrackers 264 * for each network type. This is the new model. 265 * Supports synchronous inspection of state. 266 * These are built out at startup such that an unsupported network 267 * doesn't get an ArrayList instance, making this a tristate: 268 * unsupported, supported but not active and active. 269 */ 270 private ArrayList<NetworkAgentInfo> mNetworkAgentInfoForType[]; 271 272 /* Handles captive portal check on a network */ 273 private CaptivePortalTracker mCaptivePortalTracker; 274 275 /** 276 * The link properties that define the current links 277 */ 278 private LinkProperties mCurrentLinkProperties[]; 279 280 /** 281 * A per Net list of the PID's that requested access to the net 282 * used both as a refcount and for per-PID DNS selection 283 */ 284 private List<Integer> mNetRequestersPids[]; 285 286 // priority order of the nettrackers 287 // (excluding dynamically set mNetworkPreference) 288 // TODO - move mNetworkTypePreference into this 289 private int[] mPriorityList; 290 291 private Context mContext; 292 private int mNetworkPreference; 293 private int mActiveDefaultNetwork = -1; 294 // 0 is full bad, 100 is full good 295 private int mDefaultInetCondition = 0; 296 private int mDefaultInetConditionPublished = 0; 297 private boolean mInetConditionChangeInFlight = false; 298 private int mDefaultConnectionSequence = 0; 299 300 private Object mDnsLock = new Object(); 301 private int mNumDnsEntries; 302 303 private boolean mTestMode; 304 private static ConnectivityService sServiceInstance; 305 306 private INetworkManagementService mNetd; 307 private INetworkPolicyManager mPolicyManager; 308 309 private static final int ENABLED = 1; 310 private static final int DISABLED = 0; 311 312 private static final boolean ADD = true; 313 private static final boolean REMOVE = false; 314 315 private static final boolean TO_DEFAULT_TABLE = true; 316 private static final boolean TO_SECONDARY_TABLE = false; 317 318 private static final boolean EXEMPT = true; 319 private static final boolean UNEXEMPT = false; 320 321 /** 322 * used internally as a delayed event to make us switch back to the 323 * default network 324 */ 325 private static final int EVENT_RESTORE_DEFAULT_NETWORK = 1; 326 327 /** 328 * used internally to change our mobile data enabled flag 329 */ 330 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 331 332 /** 333 * used internally to synchronize inet condition reports 334 * arg1 = networkType 335 * arg2 = condition (0 bad, 100 good) 336 */ 337 private static final int EVENT_INET_CONDITION_CHANGE = 4; 338 339 /** 340 * used internally to mark the end of inet condition hold periods 341 * arg1 = networkType 342 */ 343 private static final int EVENT_INET_CONDITION_HOLD_END = 5; 344 345 /** 346 * used internally to set enable/disable cellular data 347 * arg1 = ENBALED or DISABLED 348 */ 349 private static final int EVENT_SET_MOBILE_DATA = 7; 350 351 /** 352 * used internally to clear a wakelock when transitioning 353 * from one net to another 354 */ 355 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 356 357 /** 358 * used internally to reload global proxy settings 359 */ 360 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 361 362 /** 363 * used internally to set external dependency met/unmet 364 * arg1 = ENABLED (met) or DISABLED (unmet) 365 * arg2 = NetworkType 366 */ 367 private static final int EVENT_SET_DEPENDENCY_MET = 10; 368 369 /** 370 * used internally to send a sticky broadcast delayed. 371 */ 372 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 373 374 /** 375 * Used internally to 376 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 377 */ 378 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 379 380 private static final int EVENT_VPN_STATE_CHANGED = 13; 381 382 /** 383 * Used internally to disable fail fast of mobile data 384 */ 385 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 386 387 /** 388 * used internally to indicate that data sampling interval is up 389 */ 390 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 391 392 /** 393 * PAC manager has received new port. 394 */ 395 private static final int EVENT_PROXY_HAS_CHANGED = 16; 396 397 /** 398 * used internally when registering NetworkFactories 399 * obj = NetworkFactoryInfo 400 */ 401 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 402 403 /** 404 * used internally when registering NetworkAgents 405 * obj = Messenger 406 */ 407 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 408 409 /** 410 * used to add a network request 411 * includes a NetworkRequestInfo 412 */ 413 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 414 415 /** 416 * indicates a timeout period is over - check if we had a network yet or not 417 * and if not, call the timeout calback (but leave the request live until they 418 * cancel it. 419 * includes a NetworkRequestInfo 420 */ 421 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 422 423 /** 424 * used to add a network listener - no request 425 * includes a NetworkRequestInfo 426 */ 427 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 428 429 /** 430 * used to remove a network request, either a listener or a real request 431 * includes a NetworkRequest 432 */ 433 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 434 435 /** 436 * used internally when registering NetworkFactories 437 * obj = Messenger 438 */ 439 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 440 441 442 /** Handler used for internal events. */ 443 final private InternalHandler mHandler; 444 /** Handler used for incoming {@link NetworkStateTracker} events. */ 445 final private NetworkStateTrackerHandler mTrackerHandler; 446 447 // list of DeathRecipients used to make sure features are turned off when 448 // a process dies 449 private List<FeatureUser> mFeatureUsers; 450 451 private boolean mSystemReady; 452 private Intent mInitialBroadcast; 453 454 private PowerManager.WakeLock mNetTransitionWakeLock; 455 private String mNetTransitionWakeLockCausedBy = ""; 456 private int mNetTransitionWakeLockSerialNumber; 457 private int mNetTransitionWakeLockTimeout; 458 459 private InetAddress mDefaultDns; 460 461 // Lock for protecting access to mAddedRoutes and mExemptAddresses 462 private final Object mRoutesLock = new Object(); 463 464 // this collection is used to refcount the added routes - if there are none left 465 // it's time to remove the route from the route table 466 @GuardedBy("mRoutesLock") 467 private Collection<RouteInfo> mAddedRoutes = new ArrayList<RouteInfo>(); 468 469 // this collection corresponds to the entries of mAddedRoutes that have routing exemptions 470 // used to handle cleanup of exempt rules 471 @GuardedBy("mRoutesLock") 472 private Collection<LinkAddress> mExemptAddresses = new ArrayList<LinkAddress>(); 473 474 // used in DBG mode to track inet condition reports 475 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 476 private ArrayList mInetLog; 477 478 // track the current default http proxy - tell the world if we get a new one (real change) 479 private ProxyInfo mDefaultProxy = null; 480 private Object mProxyLock = new Object(); 481 private boolean mDefaultProxyDisabled = false; 482 483 // track the global proxy. 484 private ProxyInfo mGlobalProxy = null; 485 486 private PacManager mPacManager = null; 487 488 private SettingsObserver mSettingsObserver; 489 490 private AppOpsManager mAppOpsManager; 491 492 NetworkConfig[] mNetConfigs; 493 int mNetworksDefined; 494 495 private static class RadioAttributes { 496 public int mSimultaneity; 497 public int mType; 498 public RadioAttributes(String init) { 499 String fragments[] = init.split(","); 500 mType = Integer.parseInt(fragments[0]); 501 mSimultaneity = Integer.parseInt(fragments[1]); 502 } 503 } 504 RadioAttributes[] mRadioAttributes; 505 506 // the set of network types that can only be enabled by system/sig apps 507 List mProtectedNetworks; 508 509 private DataConnectionStats mDataConnectionStats; 510 511 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 512 513 TelephonyManager mTelephonyManager; 514 515 // sequence number for Networks 516 private final static int MIN_NET_ID = 10; // some reserved marks 517 private final static int MAX_NET_ID = 65535; 518 private int mNextNetId = MIN_NET_ID; 519 520 // sequence number of NetworkRequests 521 private int mNextNetworkRequestId = 1; 522 523 public ConnectivityService(Context context, INetworkManagementService netd, 524 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 525 // Currently, omitting a NetworkFactory will create one internally 526 // TODO: create here when we have cleaner WiMAX support 527 this(context, netd, statsService, policyManager, null); 528 } 529 530 public ConnectivityService(Context context, INetworkManagementService netManager, 531 INetworkStatsService statsService, INetworkPolicyManager policyManager, 532 NetworkFactory netFactory) { 533 if (DBG) log("ConnectivityService starting up"); 534 535 NetworkCapabilities netCap = new NetworkCapabilities(); 536 netCap.addNetworkCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 537 netCap.addNetworkCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 538 mDefaultRequest = new NetworkRequest(netCap, true, nextNetworkRequestId()); 539 NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(), 540 NetworkRequestInfo.REQUEST); 541 mNetworkRequests.put(mDefaultRequest, nri); 542 543 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 544 handlerThread.start(); 545 mHandler = new InternalHandler(handlerThread.getLooper()); 546 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 547 548 if (netFactory == null) { 549 netFactory = new DefaultNetworkFactory(context, mTrackerHandler); 550 } 551 552 // setup our unique device name 553 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 554 String id = Settings.Secure.getString(context.getContentResolver(), 555 Settings.Secure.ANDROID_ID); 556 if (id != null && id.length() > 0) { 557 String name = new String("android-").concat(id); 558 SystemProperties.set("net.hostname", name); 559 } 560 } 561 562 // read our default dns server ip 563 String dns = Settings.Global.getString(context.getContentResolver(), 564 Settings.Global.DEFAULT_DNS_SERVER); 565 if (dns == null || dns.length() == 0) { 566 dns = context.getResources().getString( 567 com.android.internal.R.string.config_default_dns_server); 568 } 569 try { 570 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 571 } catch (IllegalArgumentException e) { 572 loge("Error setting defaultDns using " + dns); 573 } 574 575 mContext = checkNotNull(context, "missing Context"); 576 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 577 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 578 mKeyStore = KeyStore.getInstance(); 579 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 580 581 try { 582 mPolicyManager.registerListener(mPolicyListener); 583 } catch (RemoteException e) { 584 // ouch, no rules updates means some processes may never get network 585 loge("unable to register INetworkPolicyListener" + e.toString()); 586 } 587 588 final PowerManager powerManager = (PowerManager) context.getSystemService( 589 Context.POWER_SERVICE); 590 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 591 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 592 com.android.internal.R.integer.config_networkTransitionTimeout); 593 594 mNetworkAgentInfoForType = (ArrayList<NetworkAgentInfo>[]) 595 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 596 597 mNetTrackers = new NetworkStateTracker[ 598 ConnectivityManager.MAX_NETWORK_TYPE+1]; 599 mCurrentLinkProperties = new LinkProperties[ConnectivityManager.MAX_NETWORK_TYPE+1]; 600 601 mRadioAttributes = new RadioAttributes[ConnectivityManager.MAX_RADIO_TYPE+1]; 602 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 603 604 // Load device network attributes from resources 605 String[] raStrings = context.getResources().getStringArray( 606 com.android.internal.R.array.radioAttributes); 607 for (String raString : raStrings) { 608 RadioAttributes r = new RadioAttributes(raString); 609 if (VDBG) log("raString=" + raString + " r=" + r); 610 if (r.mType > ConnectivityManager.MAX_RADIO_TYPE) { 611 loge("Error in radioAttributes - ignoring attempt to define type " + r.mType); 612 continue; 613 } 614 if (mRadioAttributes[r.mType] != null) { 615 loge("Error in radioAttributes - ignoring attempt to redefine type " + 616 r.mType); 617 continue; 618 } 619 mRadioAttributes[r.mType] = r; 620 } 621 622 // TODO: What is the "correct" way to do determine if this is a wifi only device? 623 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 624 log("wifiOnly=" + wifiOnly); 625 String[] naStrings = context.getResources().getStringArray( 626 com.android.internal.R.array.networkAttributes); 627 for (String naString : naStrings) { 628 try { 629 NetworkConfig n = new NetworkConfig(naString); 630 if (VDBG) log("naString=" + naString + " config=" + n); 631 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 632 loge("Error in networkAttributes - ignoring attempt to define type " + 633 n.type); 634 continue; 635 } 636 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 637 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 638 n.type); 639 continue; 640 } 641 if (mNetConfigs[n.type] != null) { 642 loge("Error in networkAttributes - ignoring attempt to redefine type " + 643 n.type); 644 continue; 645 } 646 if (mRadioAttributes[n.radio] == null) { 647 loge("Error in networkAttributes - ignoring attempt to use undefined " + 648 "radio " + n.radio + " in network type " + n.type); 649 continue; 650 } 651 mNetworkAgentInfoForType[n.type] = new ArrayList<NetworkAgentInfo>(); 652 653 mNetConfigs[n.type] = n; 654 mNetworksDefined++; 655 } catch(Exception e) { 656 // ignore it - leave the entry null 657 } 658 } 659 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 660 661 mProtectedNetworks = new ArrayList<Integer>(); 662 int[] protectedNetworks = context.getResources().getIntArray( 663 com.android.internal.R.array.config_protectedNetworks); 664 for (int p : protectedNetworks) { 665 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 666 mProtectedNetworks.add(p); 667 } else { 668 if (DBG) loge("Ignoring protectedNetwork " + p); 669 } 670 } 671 672 // high priority first 673 mPriorityList = new int[mNetworksDefined]; 674 { 675 int insertionPoint = mNetworksDefined-1; 676 int currentLowest = 0; 677 int nextLowest = 0; 678 while (insertionPoint > -1) { 679 for (NetworkConfig na : mNetConfigs) { 680 if (na == null) continue; 681 if (na.priority < currentLowest) continue; 682 if (na.priority > currentLowest) { 683 if (na.priority < nextLowest || nextLowest == 0) { 684 nextLowest = na.priority; 685 } 686 continue; 687 } 688 mPriorityList[insertionPoint--] = na.type; 689 } 690 currentLowest = nextLowest; 691 nextLowest = 0; 692 } 693 } 694 695 mNetRequestersPids = 696 (List<Integer> [])new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE+1]; 697 for (int i : mPriorityList) { 698 mNetRequestersPids[i] = new ArrayList<Integer>(); 699 } 700 701 mFeatureUsers = new ArrayList<FeatureUser>(); 702 703 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 704 && SystemProperties.get("ro.build.type").equals("eng"); 705 706 // Create and start trackers for hard-coded networks 707 for (int targetNetworkType : mPriorityList) { 708 final NetworkConfig config = mNetConfigs[targetNetworkType]; 709 final NetworkStateTracker tracker; 710 try { 711 tracker = netFactory.createTracker(targetNetworkType, config); 712 mNetTrackers[targetNetworkType] = tracker; 713 } catch (IllegalArgumentException e) { 714 Slog.e(TAG, "Problem creating " + getNetworkTypeName(targetNetworkType) 715 + " tracker: " + e); 716 continue; 717 } 718 719 tracker.startMonitoring(context, mTrackerHandler); 720 if (config.isDefault()) { 721 tracker.reconnect(); 722 } 723 } 724 725 mTethering = new Tethering(mContext, mNetd, statsService, this, mHandler.getLooper()); 726 727 //set up the listener for user state for creating user VPNs 728 IntentFilter intentFilter = new IntentFilter(); 729 intentFilter.addAction(Intent.ACTION_USER_STARTING); 730 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 731 mContext.registerReceiverAsUser( 732 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 733 mClat = new Nat464Xlat(mContext, mNetd, this, mTrackerHandler); 734 735 try { 736 mNetd.registerObserver(mTethering); 737 mNetd.registerObserver(mDataActivityObserver); 738 mNetd.registerObserver(mClat); 739 } catch (RemoteException e) { 740 loge("Error registering observer :" + e); 741 } 742 743 if (DBG) { 744 mInetLog = new ArrayList(); 745 } 746 747 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 748 mSettingsObserver.observe(mContext); 749 750 mDataConnectionStats = new DataConnectionStats(mContext); 751 mDataConnectionStats.startMonitoring(); 752 753 // start network sampling .. 754 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED, null); 755 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 756 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 757 758 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 759 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 760 761 IntentFilter filter = new IntentFilter(); 762 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 763 mContext.registerReceiver( 764 new BroadcastReceiver() { 765 @Override 766 public void onReceive(Context context, Intent intent) { 767 String action = intent.getAction(); 768 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 769 mHandler.sendMessage(mHandler.obtainMessage 770 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 771 } 772 } 773 }, 774 new IntentFilter(filter)); 775 776 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 777 778 filter = new IntentFilter(); 779 filter.addAction(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 780 mContext.registerReceiver(mProvisioningReceiver, filter); 781 782 mAppOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE); 783 } 784 785 private synchronized int nextNetworkRequestId() { 786 return mNextNetworkRequestId++; 787 } 788 789 private synchronized int nextNetId() { 790 int netId = mNextNetId; 791 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 792 return netId; 793 } 794 795 /** 796 * Factory that creates {@link NetworkStateTracker} instances using given 797 * {@link NetworkConfig}. 798 * 799 * TODO - this is obsolete and will be deleted. It's replaced by the 800 * registerNetworkFactory call and protocol. 801 * @Deprecated in favor of registerNetworkFactory dynamic bindings 802 */ 803 public interface NetworkFactory { 804 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config); 805 } 806 807 private static class DefaultNetworkFactory implements NetworkFactory { 808 private final Context mContext; 809 private final Handler mTrackerHandler; 810 811 public DefaultNetworkFactory(Context context, Handler trackerHandler) { 812 mContext = context; 813 mTrackerHandler = trackerHandler; 814 } 815 816 @Override 817 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config) { 818 switch (config.radio) { 819 case TYPE_DUMMY: 820 return new DummyDataStateTracker(targetNetworkType, config.name); 821 case TYPE_BLUETOOTH: 822 return BluetoothTetheringDataTracker.getInstance(); 823 case TYPE_WIMAX: 824 return makeWimaxStateTracker(mContext, mTrackerHandler); 825 case TYPE_PROXY: 826 return new ProxyDataTracker(); 827 default: 828 throw new IllegalArgumentException( 829 "Trying to create a NetworkStateTracker for an unknown radio type: " 830 + config.radio); 831 } 832 } 833 } 834 835 /** 836 * Loads external WiMAX library and registers as system service, returning a 837 * {@link NetworkStateTracker} for WiMAX. Caller is still responsible for 838 * invoking {@link NetworkStateTracker#startMonitoring(Context, Handler)}. 839 */ 840 private static NetworkStateTracker makeWimaxStateTracker( 841 Context context, Handler trackerHandler) { 842 // Initialize Wimax 843 DexClassLoader wimaxClassLoader; 844 Class wimaxStateTrackerClass = null; 845 Class wimaxServiceClass = null; 846 Class wimaxManagerClass; 847 String wimaxJarLocation; 848 String wimaxLibLocation; 849 String wimaxManagerClassName; 850 String wimaxServiceClassName; 851 String wimaxStateTrackerClassName; 852 853 NetworkStateTracker wimaxStateTracker = null; 854 855 boolean isWimaxEnabled = context.getResources().getBoolean( 856 com.android.internal.R.bool.config_wimaxEnabled); 857 858 if (isWimaxEnabled) { 859 try { 860 wimaxJarLocation = context.getResources().getString( 861 com.android.internal.R.string.config_wimaxServiceJarLocation); 862 wimaxLibLocation = context.getResources().getString( 863 com.android.internal.R.string.config_wimaxNativeLibLocation); 864 wimaxManagerClassName = context.getResources().getString( 865 com.android.internal.R.string.config_wimaxManagerClassname); 866 wimaxServiceClassName = context.getResources().getString( 867 com.android.internal.R.string.config_wimaxServiceClassname); 868 wimaxStateTrackerClassName = context.getResources().getString( 869 com.android.internal.R.string.config_wimaxStateTrackerClassname); 870 871 if (DBG) log("wimaxJarLocation: " + wimaxJarLocation); 872 wimaxClassLoader = new DexClassLoader(wimaxJarLocation, 873 new ContextWrapper(context).getCacheDir().getAbsolutePath(), 874 wimaxLibLocation, ClassLoader.getSystemClassLoader()); 875 876 try { 877 wimaxManagerClass = wimaxClassLoader.loadClass(wimaxManagerClassName); 878 wimaxStateTrackerClass = wimaxClassLoader.loadClass(wimaxStateTrackerClassName); 879 wimaxServiceClass = wimaxClassLoader.loadClass(wimaxServiceClassName); 880 } catch (ClassNotFoundException ex) { 881 loge("Exception finding Wimax classes: " + ex.toString()); 882 return null; 883 } 884 } catch(Resources.NotFoundException ex) { 885 loge("Wimax Resources does not exist!!! "); 886 return null; 887 } 888 889 try { 890 if (DBG) log("Starting Wimax Service... "); 891 892 Constructor wmxStTrkrConst = wimaxStateTrackerClass.getConstructor 893 (new Class[] {Context.class, Handler.class}); 894 wimaxStateTracker = (NetworkStateTracker) wmxStTrkrConst.newInstance( 895 context, trackerHandler); 896 897 Constructor wmxSrvConst = wimaxServiceClass.getDeclaredConstructor 898 (new Class[] {Context.class, wimaxStateTrackerClass}); 899 wmxSrvConst.setAccessible(true); 900 IBinder svcInvoker = (IBinder)wmxSrvConst.newInstance(context, wimaxStateTracker); 901 wmxSrvConst.setAccessible(false); 902 903 ServiceManager.addService(WimaxManagerConstants.WIMAX_SERVICE, svcInvoker); 904 905 } catch(Exception ex) { 906 loge("Exception creating Wimax classes: " + ex.toString()); 907 return null; 908 } 909 } else { 910 loge("Wimax is not enabled or not added to the network attributes!!! "); 911 return null; 912 } 913 914 return wimaxStateTracker; 915 } 916 917 private int getConnectivityChangeDelay() { 918 final ContentResolver cr = mContext.getContentResolver(); 919 920 /** Check system properties for the default value then use secure settings value, if any. */ 921 int defaultDelay = SystemProperties.getInt( 922 "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY, 923 ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT); 924 return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY, 925 defaultDelay); 926 } 927 928 private boolean teardown(NetworkStateTracker netTracker) { 929 if (netTracker.teardown()) { 930 netTracker.setTeardownRequested(true); 931 return true; 932 } else { 933 return false; 934 } 935 } 936 937 /** 938 * Check if UID should be blocked from using the network represented by the 939 * given {@link NetworkStateTracker}. 940 */ 941 private boolean isNetworkBlocked(int networkType, int uid) { 942 final boolean networkCostly; 943 final int uidRules; 944 945 LinkProperties lp = getLinkPropertiesForType(networkType); 946 final String iface = (lp == null ? "" : lp.getInterfaceName()); 947 synchronized (mRulesLock) { 948 networkCostly = mMeteredIfaces.contains(iface); 949 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 950 } 951 952 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 953 return true; 954 } 955 956 // no restrictive rules; network is visible 957 return false; 958 } 959 960 /** 961 * Return a filtered {@link NetworkInfo}, potentially marked 962 * {@link DetailedState#BLOCKED} based on 963 * {@link #isNetworkBlocked}. 964 */ 965 private NetworkInfo getFilteredNetworkInfo(int networkType, int uid) { 966 NetworkInfo info = getNetworkInfoForType(networkType); 967 if (isNetworkBlocked(networkType, uid)) { 968 // network is blocked; clone and override state 969 info = new NetworkInfo(info); 970 info.setDetailedState(DetailedState.BLOCKED, null, null); 971 } 972 if (mLockdownTracker != null) { 973 info = mLockdownTracker.augmentNetworkInfo(info); 974 } 975 return info; 976 } 977 978 /** 979 * Return NetworkInfo for the active (i.e., connected) network interface. 980 * It is assumed that at most one network is active at a time. If more 981 * than one is active, it is indeterminate which will be returned. 982 * @return the info for the active network, or {@code null} if none is 983 * active 984 */ 985 @Override 986 public NetworkInfo getActiveNetworkInfo() { 987 enforceAccessPermission(); 988 final int uid = Binder.getCallingUid(); 989 return getNetworkInfo(mActiveDefaultNetwork, uid); 990 } 991 992 // only called when the default request is satisfied 993 private void updateActiveDefaultNetwork(NetworkAgentInfo nai) { 994 if (nai != null) { 995 mActiveDefaultNetwork = nai.networkInfo.getType(); 996 } else { 997 mActiveDefaultNetwork = TYPE_NONE; 998 } 999 } 1000 1001 /** 1002 * Find the first Provisioning network. 1003 * 1004 * @return NetworkInfo or null if none. 1005 */ 1006 private NetworkInfo getProvisioningNetworkInfo() { 1007 enforceAccessPermission(); 1008 1009 // Find the first Provisioning Network 1010 NetworkInfo provNi = null; 1011 for (NetworkInfo ni : getAllNetworkInfo()) { 1012 if (ni.isConnectedToProvisioningNetwork()) { 1013 provNi = ni; 1014 break; 1015 } 1016 } 1017 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 1018 return provNi; 1019 } 1020 1021 /** 1022 * Find the first Provisioning network or the ActiveDefaultNetwork 1023 * if there is no Provisioning network 1024 * 1025 * @return NetworkInfo or null if none. 1026 */ 1027 @Override 1028 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 1029 enforceAccessPermission(); 1030 1031 NetworkInfo provNi = getProvisioningNetworkInfo(); 1032 if (provNi == null) { 1033 final int uid = Binder.getCallingUid(); 1034 provNi = getNetworkInfo(mActiveDefaultNetwork, uid); 1035 } 1036 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 1037 return provNi; 1038 } 1039 1040 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1041 enforceAccessPermission(); 1042 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 1043 return getNetworkInfoForType(mActiveDefaultNetwork); 1044 } 1045 return null; 1046 } 1047 1048 @Override 1049 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1050 enforceConnectivityInternalPermission(); 1051 return getNetworkInfo(mActiveDefaultNetwork, uid); 1052 } 1053 1054 @Override 1055 public NetworkInfo getNetworkInfo(int networkType) { 1056 enforceAccessPermission(); 1057 final int uid = Binder.getCallingUid(); 1058 return getNetworkInfo(networkType, uid); 1059 } 1060 1061 private NetworkInfo getNetworkInfo(int networkType, int uid) { 1062 NetworkInfo info = null; 1063 if (isNetworkTypeValid(networkType)) { 1064 if (getNetworkInfoForType(networkType) != null) { 1065 info = getFilteredNetworkInfo(networkType, uid); 1066 } 1067 } 1068 return info; 1069 } 1070 1071 @Override 1072 public NetworkInfo[] getAllNetworkInfo() { 1073 enforceAccessPermission(); 1074 final int uid = Binder.getCallingUid(); 1075 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1076 synchronized (mRulesLock) { 1077 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1078 networkType++) { 1079 if (getNetworkInfoForType(networkType) != null) { 1080 result.add(getFilteredNetworkInfo(networkType, uid)); 1081 } 1082 } 1083 } 1084 return result.toArray(new NetworkInfo[result.size()]); 1085 } 1086 1087 @Override 1088 public boolean isNetworkSupported(int networkType) { 1089 enforceAccessPermission(); 1090 return (isNetworkTypeValid(networkType) && (getNetworkInfoForType(networkType) != null)); 1091 } 1092 1093 /** 1094 * Return LinkProperties for the active (i.e., connected) default 1095 * network interface. It is assumed that at most one default network 1096 * is active at a time. If more than one is active, it is indeterminate 1097 * which will be returned. 1098 * @return the ip properties for the active network, or {@code null} if 1099 * none is active 1100 */ 1101 @Override 1102 public LinkProperties getActiveLinkProperties() { 1103 return getLinkPropertiesForType(mActiveDefaultNetwork); 1104 } 1105 1106 @Override 1107 public LinkProperties getLinkPropertiesForType(int networkType) { 1108 enforceAccessPermission(); 1109 if (isNetworkTypeValid(networkType)) { 1110 return getLinkPropertiesForTypeInternal(networkType); 1111 } 1112 return null; 1113 } 1114 1115 // TODO - this should be ALL networks 1116 @Override 1117 public LinkProperties getLinkProperties(Network network) { 1118 enforceAccessPermission(); 1119 NetworkAgentInfo nai = mNetworkForNetId.get(network.netId); 1120 if (nai != null) return new LinkProperties(nai.linkProperties); 1121 return null; 1122 } 1123 1124 @Override 1125 public NetworkCapabilities getNetworkCapabilities(Network network) { 1126 enforceAccessPermission(); 1127 NetworkAgentInfo nai = mNetworkForNetId.get(network.netId); 1128 if (nai != null) return new NetworkCapabilities(nai.networkCapabilities); 1129 return null; 1130 } 1131 1132 @Override 1133 public NetworkState[] getAllNetworkState() { 1134 enforceAccessPermission(); 1135 final int uid = Binder.getCallingUid(); 1136 final ArrayList<NetworkState> result = Lists.newArrayList(); 1137 synchronized (mRulesLock) { 1138 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1139 networkType++) { 1140 if (getNetworkInfoForType(networkType) != null) { 1141 final NetworkInfo info = getFilteredNetworkInfo(networkType, uid); 1142 final LinkProperties lp = getLinkPropertiesForTypeInternal(networkType); 1143 final NetworkCapabilities netcap = getNetworkCapabilitiesForType(networkType); 1144 result.add(new NetworkState(info, lp, netcap)); 1145 } 1146 } 1147 } 1148 return result.toArray(new NetworkState[result.size()]); 1149 } 1150 1151 private NetworkState getNetworkStateUnchecked(int networkType) { 1152 if (isNetworkTypeValid(networkType)) { 1153 NetworkInfo info = getNetworkInfoForType(networkType); 1154 if (info != null) { 1155 return new NetworkState(info, 1156 getLinkPropertiesForTypeInternal(networkType), 1157 getNetworkCapabilitiesForType(networkType)); 1158 } 1159 } 1160 return null; 1161 } 1162 1163 @Override 1164 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1165 enforceAccessPermission(); 1166 1167 final long token = Binder.clearCallingIdentity(); 1168 try { 1169 final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork); 1170 if (state != null) { 1171 try { 1172 return mPolicyManager.getNetworkQuotaInfo(state); 1173 } catch (RemoteException e) { 1174 } 1175 } 1176 return null; 1177 } finally { 1178 Binder.restoreCallingIdentity(token); 1179 } 1180 } 1181 1182 @Override 1183 public boolean isActiveNetworkMetered() { 1184 enforceAccessPermission(); 1185 final long token = Binder.clearCallingIdentity(); 1186 try { 1187 return isNetworkMeteredUnchecked(mActiveDefaultNetwork); 1188 } finally { 1189 Binder.restoreCallingIdentity(token); 1190 } 1191 } 1192 1193 private boolean isNetworkMeteredUnchecked(int networkType) { 1194 final NetworkState state = getNetworkStateUnchecked(networkType); 1195 if (state != null) { 1196 try { 1197 return mPolicyManager.isNetworkMetered(state); 1198 } catch (RemoteException e) { 1199 } 1200 } 1201 return false; 1202 } 1203 1204 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1205 @Override 1206 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1207 int deviceType = Integer.parseInt(label); 1208 sendDataActivityBroadcast(deviceType, active, tsNanos); 1209 } 1210 }; 1211 1212 /** 1213 * Used to notice when the calling process dies so we can self-expire 1214 * 1215 * Also used to know if the process has cleaned up after itself when 1216 * our auto-expire timer goes off. The timer has a link to an object. 1217 * 1218 */ 1219 private class FeatureUser implements IBinder.DeathRecipient { 1220 int mNetworkType; 1221 String mFeature; 1222 IBinder mBinder; 1223 int mPid; 1224 int mUid; 1225 long mCreateTime; 1226 1227 FeatureUser(int type, String feature, IBinder binder) { 1228 super(); 1229 mNetworkType = type; 1230 mFeature = feature; 1231 mBinder = binder; 1232 mPid = getCallingPid(); 1233 mUid = getCallingUid(); 1234 mCreateTime = System.currentTimeMillis(); 1235 1236 try { 1237 mBinder.linkToDeath(this, 0); 1238 } catch (RemoteException e) { 1239 binderDied(); 1240 } 1241 } 1242 1243 void unlinkDeathRecipient() { 1244 mBinder.unlinkToDeath(this, 0); 1245 } 1246 1247 public void binderDied() { 1248 log("ConnectivityService FeatureUser binderDied(" + 1249 mNetworkType + ", " + mFeature + ", " + mBinder + "), created " + 1250 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1251 stopUsingNetworkFeature(this, false); 1252 } 1253 1254 public void expire() { 1255 if (VDBG) { 1256 log("ConnectivityService FeatureUser expire(" + 1257 mNetworkType + ", " + mFeature + ", " + mBinder +"), created " + 1258 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1259 } 1260 stopUsingNetworkFeature(this, false); 1261 } 1262 1263 public boolean isSameUser(FeatureUser u) { 1264 if (u == null) return false; 1265 1266 return isSameUser(u.mPid, u.mUid, u.mNetworkType, u.mFeature); 1267 } 1268 1269 public boolean isSameUser(int pid, int uid, int networkType, String feature) { 1270 if ((mPid == pid) && (mUid == uid) && (mNetworkType == networkType) && 1271 TextUtils.equals(mFeature, feature)) { 1272 return true; 1273 } 1274 return false; 1275 } 1276 1277 public String toString() { 1278 return "FeatureUser("+mNetworkType+","+mFeature+","+mPid+","+mUid+"), created " + 1279 (System.currentTimeMillis() - mCreateTime) + " mSec ago"; 1280 } 1281 } 1282 1283 // javadoc from interface 1284 public int startUsingNetworkFeature(int networkType, String feature, 1285 IBinder binder) { 1286 long startTime = 0; 1287 if (DBG) { 1288 startTime = SystemClock.elapsedRealtime(); 1289 } 1290 if (VDBG) { 1291 log("startUsingNetworkFeature for net " + networkType + ": " + feature + ", uid=" 1292 + Binder.getCallingUid()); 1293 } 1294 enforceChangePermission(); 1295 try { 1296 if (!ConnectivityManager.isNetworkTypeValid(networkType) || 1297 mNetConfigs[networkType] == null) { 1298 return PhoneConstants.APN_REQUEST_FAILED; 1299 } 1300 1301 FeatureUser f = new FeatureUser(networkType, feature, binder); 1302 1303 // TODO - move this into individual networktrackers 1304 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1305 1306 if (mLockdownEnabled) { 1307 // Since carrier APNs usually aren't available from VPN 1308 // endpoint, mark them as unavailable. 1309 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1310 } 1311 1312 if (mProtectedNetworks.contains(usedNetworkType)) { 1313 enforceConnectivityInternalPermission(); 1314 } 1315 1316 // if UID is restricted, don't allow them to bring up metered APNs 1317 final boolean networkMetered = isNetworkMeteredUnchecked(usedNetworkType); 1318 final int uidRules; 1319 synchronized (mRulesLock) { 1320 uidRules = mUidRules.get(Binder.getCallingUid(), RULE_ALLOW_ALL); 1321 } 1322 if (networkMetered && (uidRules & RULE_REJECT_METERED) != 0) { 1323 return PhoneConstants.APN_REQUEST_FAILED; 1324 } 1325 1326 NetworkStateTracker network = mNetTrackers[usedNetworkType]; 1327 if (network != null) { 1328 Integer currentPid = new Integer(getCallingPid()); 1329 if (usedNetworkType != networkType) { 1330 NetworkInfo ni = network.getNetworkInfo(); 1331 1332 if (ni.isAvailable() == false) { 1333 if (!TextUtils.equals(feature,Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 1334 if (DBG) log("special network not available ni=" + ni.getTypeName()); 1335 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1336 } else { 1337 // else make the attempt anyway - probably giving REQUEST_STARTED below 1338 if (DBG) { 1339 log("special network not available, but try anyway ni=" + 1340 ni.getTypeName()); 1341 } 1342 } 1343 } 1344 1345 int restoreTimer = getRestoreDefaultNetworkDelay(usedNetworkType); 1346 1347 synchronized(this) { 1348 boolean addToList = true; 1349 if (restoreTimer < 0) { 1350 // In case there is no timer is specified for the feature, 1351 // make sure we don't add duplicate entry with the same request. 1352 for (FeatureUser u : mFeatureUsers) { 1353 if (u.isSameUser(f)) { 1354 // Duplicate user is found. Do not add. 1355 addToList = false; 1356 break; 1357 } 1358 } 1359 } 1360 1361 if (addToList) mFeatureUsers.add(f); 1362 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1363 // this gets used for per-pid dns when connected 1364 mNetRequestersPids[usedNetworkType].add(currentPid); 1365 } 1366 } 1367 1368 if (restoreTimer >= 0) { 1369 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1370 EVENT_RESTORE_DEFAULT_NETWORK, f), restoreTimer); 1371 } 1372 1373 if ((ni.isConnectedOrConnecting() == true) && 1374 !network.isTeardownRequested()) { 1375 if (ni.isConnected() == true) { 1376 final long token = Binder.clearCallingIdentity(); 1377 try { 1378 // add the pid-specific dns 1379 handleDnsConfigurationChange(usedNetworkType); 1380 if (VDBG) log("special network already active"); 1381 } finally { 1382 Binder.restoreCallingIdentity(token); 1383 } 1384 return PhoneConstants.APN_ALREADY_ACTIVE; 1385 } 1386 if (VDBG) log("special network already connecting"); 1387 return PhoneConstants.APN_REQUEST_STARTED; 1388 } 1389 1390 // check if the radio in play can make another contact 1391 // assume if cannot for now 1392 1393 if (DBG) { 1394 log("startUsingNetworkFeature reconnecting to " + networkType + ": " + 1395 feature); 1396 } 1397 if (network.reconnect()) { 1398 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_STARTED"); 1399 return PhoneConstants.APN_REQUEST_STARTED; 1400 } else { 1401 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_FAILED"); 1402 return PhoneConstants.APN_REQUEST_FAILED; 1403 } 1404 } else { 1405 // need to remember this unsupported request so we respond appropriately on stop 1406 synchronized(this) { 1407 mFeatureUsers.add(f); 1408 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1409 // this gets used for per-pid dns when connected 1410 mNetRequestersPids[usedNetworkType].add(currentPid); 1411 } 1412 } 1413 if (DBG) log("startUsingNetworkFeature X: return -1 unsupported feature."); 1414 return -1; 1415 } 1416 } 1417 if (DBG) log("startUsingNetworkFeature X: return APN_TYPE_NOT_AVAILABLE"); 1418 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1419 } finally { 1420 if (DBG) { 1421 final long execTime = SystemClock.elapsedRealtime() - startTime; 1422 if (execTime > 250) { 1423 loge("startUsingNetworkFeature took too long: " + execTime + "ms"); 1424 } else { 1425 if (VDBG) log("startUsingNetworkFeature took " + execTime + "ms"); 1426 } 1427 } 1428 } 1429 } 1430 1431 // javadoc from interface 1432 public int stopUsingNetworkFeature(int networkType, String feature) { 1433 enforceChangePermission(); 1434 1435 int pid = getCallingPid(); 1436 int uid = getCallingUid(); 1437 1438 FeatureUser u = null; 1439 boolean found = false; 1440 1441 synchronized(this) { 1442 for (FeatureUser x : mFeatureUsers) { 1443 if (x.isSameUser(pid, uid, networkType, feature)) { 1444 u = x; 1445 found = true; 1446 break; 1447 } 1448 } 1449 } 1450 if (found && u != null) { 1451 if (VDBG) log("stopUsingNetworkFeature: X"); 1452 // stop regardless of how many other time this proc had called start 1453 return stopUsingNetworkFeature(u, true); 1454 } else { 1455 // none found! 1456 if (VDBG) log("stopUsingNetworkFeature: X not a live request, ignoring"); 1457 return 1; 1458 } 1459 } 1460 1461 private int stopUsingNetworkFeature(FeatureUser u, boolean ignoreDups) { 1462 int networkType = u.mNetworkType; 1463 String feature = u.mFeature; 1464 int pid = u.mPid; 1465 int uid = u.mUid; 1466 1467 NetworkStateTracker tracker = null; 1468 boolean callTeardown = false; // used to carry our decision outside of sync block 1469 1470 if (VDBG) { 1471 log("stopUsingNetworkFeature: net " + networkType + ": " + feature); 1472 } 1473 1474 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1475 if (DBG) { 1476 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1477 ", net is invalid"); 1478 } 1479 return -1; 1480 } 1481 1482 // need to link the mFeatureUsers list with the mNetRequestersPids state in this 1483 // sync block 1484 synchronized(this) { 1485 // check if this process still has an outstanding start request 1486 if (!mFeatureUsers.contains(u)) { 1487 if (VDBG) { 1488 log("stopUsingNetworkFeature: this process has no outstanding requests" + 1489 ", ignoring"); 1490 } 1491 return 1; 1492 } 1493 u.unlinkDeathRecipient(); 1494 mFeatureUsers.remove(mFeatureUsers.indexOf(u)); 1495 // If we care about duplicate requests, check for that here. 1496 // 1497 // This is done to support the extension of a request - the app 1498 // can request we start the network feature again and renew the 1499 // auto-shutoff delay. Normal "stop" calls from the app though 1500 // do not pay attention to duplicate requests - in effect the 1501 // API does not refcount and a single stop will counter multiple starts. 1502 if (ignoreDups == false) { 1503 for (FeatureUser x : mFeatureUsers) { 1504 if (x.isSameUser(u)) { 1505 if (VDBG) log("stopUsingNetworkFeature: dup is found, ignoring"); 1506 return 1; 1507 } 1508 } 1509 } 1510 1511 // TODO - move to individual network trackers 1512 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1513 1514 tracker = mNetTrackers[usedNetworkType]; 1515 if (tracker == null) { 1516 if (DBG) { 1517 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1518 " no known tracker for used net type " + usedNetworkType); 1519 } 1520 return -1; 1521 } 1522 if (usedNetworkType != networkType) { 1523 Integer currentPid = new Integer(pid); 1524 mNetRequestersPids[usedNetworkType].remove(currentPid); 1525 1526 final long token = Binder.clearCallingIdentity(); 1527 try { 1528 reassessPidDns(pid, true); 1529 } finally { 1530 Binder.restoreCallingIdentity(token); 1531 } 1532 flushVmDnsCache(); 1533 if (mNetRequestersPids[usedNetworkType].size() != 0) { 1534 if (VDBG) { 1535 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1536 " others still using it"); 1537 } 1538 return 1; 1539 } 1540 callTeardown = true; 1541 } else { 1542 if (DBG) { 1543 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1544 " not a known feature - dropping"); 1545 } 1546 } 1547 } 1548 1549 if (callTeardown) { 1550 if (DBG) { 1551 log("stopUsingNetworkFeature: teardown net " + networkType + ": " + feature); 1552 } 1553 tracker.teardown(); 1554 return 1; 1555 } else { 1556 return -1; 1557 } 1558 } 1559 1560 /** 1561 * Check if the address falls into any of currently running VPN's route's. 1562 */ 1563 private boolean isAddressUnderVpn(InetAddress address) { 1564 synchronized (mVpns) { 1565 synchronized (mRoutesLock) { 1566 int uid = UserHandle.getCallingUserId(); 1567 Vpn vpn = mVpns.get(uid); 1568 if (vpn == null) { 1569 return false; 1570 } 1571 1572 // Check if an exemption exists for this address. 1573 for (LinkAddress destination : mExemptAddresses) { 1574 if (!NetworkUtils.addressTypeMatches(address, destination.getAddress())) { 1575 continue; 1576 } 1577 1578 int prefix = destination.getNetworkPrefixLength(); 1579 InetAddress addrMasked = NetworkUtils.getNetworkPart(address, prefix); 1580 InetAddress destMasked = NetworkUtils.getNetworkPart(destination.getAddress(), 1581 prefix); 1582 1583 if (addrMasked.equals(destMasked)) { 1584 return false; 1585 } 1586 } 1587 1588 // Finally check if the address is covered by the VPN. 1589 return vpn.isAddressCovered(address); 1590 } 1591 } 1592 } 1593 1594 /** 1595 * @deprecated use requestRouteToHostAddress instead 1596 * 1597 * Ensure that a network route exists to deliver traffic to the specified 1598 * host via the specified network interface. 1599 * @param networkType the type of the network over which traffic to the 1600 * specified host is to be routed 1601 * @param hostAddress the IP address of the host to which the route is 1602 * desired 1603 * @return {@code true} on success, {@code false} on failure 1604 */ 1605 public boolean requestRouteToHost(int networkType, int hostAddress, String packageName) { 1606 InetAddress inetAddress = NetworkUtils.intToInetAddress(hostAddress); 1607 1608 if (inetAddress == null) { 1609 return false; 1610 } 1611 1612 return requestRouteToHostAddress(networkType, inetAddress.getAddress(), packageName); 1613 } 1614 1615 /** 1616 * Ensure that a network route exists to deliver traffic to the specified 1617 * host via the specified network interface. 1618 * @param networkType the type of the network over which traffic to the 1619 * specified host is to be routed 1620 * @param hostAddress the IP address of the host to which the route is 1621 * desired 1622 * @return {@code true} on success, {@code false} on failure 1623 */ 1624 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress, 1625 String packageName) { 1626 enforceChangePermission(); 1627 if (mProtectedNetworks.contains(networkType)) { 1628 enforceConnectivityInternalPermission(); 1629 } 1630 boolean exempt; 1631 InetAddress addr; 1632 try { 1633 addr = InetAddress.getByAddress(hostAddress); 1634 } catch (UnknownHostException e) { 1635 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1636 return false; 1637 } 1638 // System apps may request routes bypassing the VPN to keep other networks working. 1639 if (Binder.getCallingUid() == Process.SYSTEM_UID) { 1640 exempt = true; 1641 } else { 1642 mAppOpsManager.checkPackage(Binder.getCallingUid(), packageName); 1643 try { 1644 ApplicationInfo info = mContext.getPackageManager().getApplicationInfo(packageName, 1645 0); 1646 exempt = (info.flags & ApplicationInfo.FLAG_SYSTEM) != 0; 1647 } catch (NameNotFoundException e) { 1648 throw new IllegalArgumentException("Failed to find calling package details", e); 1649 } 1650 } 1651 1652 // Non-exempt routeToHost's can only be added if the host is not covered by the VPN. 1653 // This can be either because the VPN's routes do not cover the destination or a 1654 // system application added an exemption that covers this destination. 1655 if (!exempt && isAddressUnderVpn(addr)) { 1656 return false; 1657 } 1658 1659 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1660 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1661 return false; 1662 } 1663 NetworkStateTracker tracker = mNetTrackers[networkType]; 1664 DetailedState netState = DetailedState.DISCONNECTED; 1665 if (tracker != null) { 1666 netState = tracker.getNetworkInfo().getDetailedState(); 1667 } 1668 1669 if ((netState != DetailedState.CONNECTED && 1670 netState != DetailedState.CAPTIVE_PORTAL_CHECK) || 1671 tracker.isTeardownRequested()) { 1672 if (VDBG) { 1673 log("requestRouteToHostAddress on down network " 1674 + "(" + networkType + ") - dropped" 1675 + " tracker=" + tracker 1676 + " netState=" + netState 1677 + " isTeardownRequested=" 1678 + ((tracker != null) ? tracker.isTeardownRequested() : "tracker:null")); 1679 } 1680 return false; 1681 } 1682 final long token = Binder.clearCallingIdentity(); 1683 try { 1684 LinkProperties lp = tracker.getLinkProperties(); 1685 boolean ok = addRouteToAddress(lp, addr, exempt, tracker.getNetwork().netId); 1686 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1687 return ok; 1688 } finally { 1689 Binder.restoreCallingIdentity(token); 1690 } 1691 } 1692 1693 private boolean addRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, 1694 boolean exempt, int netId) { 1695 return modifyRoute(p, r, 0, ADD, toDefaultTable, exempt, netId); 1696 } 1697 1698 private boolean removeRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, int netId) { 1699 return modifyRoute(p, r, 0, REMOVE, toDefaultTable, UNEXEMPT, netId); 1700 } 1701 1702 private boolean addRouteToAddress(LinkProperties lp, InetAddress addr, boolean exempt, 1703 int netId) { 1704 return modifyRouteToAddress(lp, addr, ADD, TO_DEFAULT_TABLE, exempt, netId); 1705 } 1706 1707 private boolean removeRouteToAddress(LinkProperties lp, InetAddress addr, int netId) { 1708 return modifyRouteToAddress(lp, addr, REMOVE, TO_DEFAULT_TABLE, UNEXEMPT, netId); 1709 } 1710 1711 private boolean modifyRouteToAddress(LinkProperties lp, InetAddress addr, boolean doAdd, 1712 boolean toDefaultTable, boolean exempt, int netId) { 1713 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1714 if (bestRoute == null) { 1715 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1716 } else { 1717 String iface = bestRoute.getInterface(); 1718 if (bestRoute.getGateway().equals(addr)) { 1719 // if there is no better route, add the implied hostroute for our gateway 1720 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1721 } else { 1722 // if we will connect to this through another route, add a direct route 1723 // to it's gateway 1724 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1725 } 1726 } 1727 return modifyRoute(lp, bestRoute, 0, doAdd, toDefaultTable, exempt, netId); 1728 } 1729 1730 private boolean modifyRoute(LinkProperties lp, RouteInfo r, int cycleCount, boolean doAdd, 1731 boolean toDefaultTable, boolean exempt, int netId) { 1732 if ((lp == null) || (r == null)) { 1733 if (DBG) log("modifyRoute got unexpected null: " + lp + ", " + r); 1734 return false; 1735 } 1736 1737 if (cycleCount > MAX_HOSTROUTE_CYCLE_COUNT) { 1738 loge("Error modifying route - too much recursion"); 1739 return false; 1740 } 1741 1742 String ifaceName = r.getInterface(); 1743 if(ifaceName == null) { 1744 loge("Error modifying route - no interface name"); 1745 return false; 1746 } 1747 if (r.hasGateway()) { 1748 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), r.getGateway()); 1749 if (bestRoute != null) { 1750 if (bestRoute.getGateway().equals(r.getGateway())) { 1751 // if there is no better route, add the implied hostroute for our gateway 1752 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), ifaceName); 1753 } else { 1754 // if we will connect to our gateway through another route, add a direct 1755 // route to it's gateway 1756 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), 1757 bestRoute.getGateway(), 1758 ifaceName); 1759 } 1760 modifyRoute(lp, bestRoute, cycleCount+1, doAdd, toDefaultTable, exempt, netId); 1761 } 1762 } 1763 if (doAdd) { 1764 if (VDBG) log("Adding " + r + " for interface " + ifaceName); 1765 try { 1766 if (toDefaultTable) { 1767 synchronized (mRoutesLock) { 1768 // only track default table - only one apps can effect 1769 mAddedRoutes.add(r); 1770 mNetd.addRoute(netId, r); 1771 if (exempt) { 1772 LinkAddress dest = r.getDestination(); 1773 if (!mExemptAddresses.contains(dest)) { 1774 mNetd.setHostExemption(dest); 1775 mExemptAddresses.add(dest); 1776 } 1777 } 1778 } 1779 } else { 1780 mNetd.addRoute(netId, r); 1781 } 1782 } catch (Exception e) { 1783 // never crash - catch them all 1784 if (DBG) loge("Exception trying to add a route: " + e); 1785 return false; 1786 } 1787 } else { 1788 // if we remove this one and there are no more like it, then refcount==0 and 1789 // we can remove it from the table 1790 if (toDefaultTable) { 1791 synchronized (mRoutesLock) { 1792 mAddedRoutes.remove(r); 1793 if (mAddedRoutes.contains(r) == false) { 1794 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1795 try { 1796 mNetd.removeRoute(netId, r); 1797 LinkAddress dest = r.getDestination(); 1798 if (mExemptAddresses.contains(dest)) { 1799 mNetd.clearHostExemption(dest); 1800 mExemptAddresses.remove(dest); 1801 } 1802 } catch (Exception e) { 1803 // never crash - catch them all 1804 if (VDBG) loge("Exception trying to remove a route: " + e); 1805 return false; 1806 } 1807 } else { 1808 if (VDBG) log("not removing " + r + " as it's still in use"); 1809 } 1810 } 1811 } else { 1812 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1813 try { 1814 mNetd.removeRoute(netId, r); 1815 } catch (Exception e) { 1816 // never crash - catch them all 1817 if (VDBG) loge("Exception trying to remove a route: " + e); 1818 return false; 1819 } 1820 } 1821 } 1822 return true; 1823 } 1824 1825 /** 1826 * @see ConnectivityManager#getMobileDataEnabled() 1827 */ 1828 public boolean getMobileDataEnabled() { 1829 // TODO: This detail should probably be in DataConnectionTracker's 1830 // which is where we store the value and maybe make this 1831 // asynchronous. 1832 enforceAccessPermission(); 1833 boolean retVal = Settings.Global.getInt(mContext.getContentResolver(), 1834 Settings.Global.MOBILE_DATA, 1) == 1; 1835 if (VDBG) log("getMobileDataEnabled returning " + retVal); 1836 return retVal; 1837 } 1838 1839 public void setDataDependency(int networkType, boolean met) { 1840 enforceConnectivityInternalPermission(); 1841 1842 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1843 (met ? ENABLED : DISABLED), networkType)); 1844 } 1845 1846 private void handleSetDependencyMet(int networkType, boolean met) { 1847 if (mNetTrackers[networkType] != null) { 1848 if (DBG) { 1849 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1850 } 1851 mNetTrackers[networkType].setDependencyMet(met); 1852 } 1853 } 1854 1855 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1856 @Override 1857 public void onUidRulesChanged(int uid, int uidRules) { 1858 // caller is NPMS, since we only register with them 1859 if (LOGD_RULES) { 1860 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1861 } 1862 1863 synchronized (mRulesLock) { 1864 // skip update when we've already applied rules 1865 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1866 if (oldRules == uidRules) return; 1867 1868 mUidRules.put(uid, uidRules); 1869 } 1870 1871 // TODO: notify UID when it has requested targeted updates 1872 } 1873 1874 @Override 1875 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1876 // caller is NPMS, since we only register with them 1877 if (LOGD_RULES) { 1878 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1879 } 1880 1881 synchronized (mRulesLock) { 1882 mMeteredIfaces.clear(); 1883 for (String iface : meteredIfaces) { 1884 mMeteredIfaces.add(iface); 1885 } 1886 } 1887 } 1888 1889 @Override 1890 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1891 // caller is NPMS, since we only register with them 1892 if (LOGD_RULES) { 1893 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1894 } 1895 1896 // kick off connectivity change broadcast for active network, since 1897 // global background policy change is radical. 1898 final int networkType = mActiveDefaultNetwork; 1899 if (isNetworkTypeValid(networkType)) { 1900 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1901 if (tracker != null) { 1902 final NetworkInfo info = tracker.getNetworkInfo(); 1903 if (info != null && info.isConnected()) { 1904 sendConnectedBroadcast(info); 1905 } 1906 } 1907 } 1908 } 1909 }; 1910 1911 /** 1912 * @see ConnectivityManager#setMobileDataEnabled(boolean) 1913 */ 1914 public void setMobileDataEnabled(boolean enabled) { 1915 enforceChangePermission(); 1916 if (DBG) log("setMobileDataEnabled(" + enabled + ")"); 1917 1918 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_MOBILE_DATA, 1919 (enabled ? ENABLED : DISABLED), 0)); 1920 } 1921 1922 private void handleSetMobileData(boolean enabled) { 1923 // TODO - handle this - probably generalize passing in a transport type and send to the 1924 // factories? 1925 } 1926 1927 @Override 1928 public void setPolicyDataEnable(int networkType, boolean enabled) { 1929 // only someone like NPMS should only be calling us 1930 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1931 1932 mHandler.sendMessage(mHandler.obtainMessage( 1933 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1934 } 1935 1936 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1937 // TODO - handle this passing to factories 1938// if (isNetworkTypeValid(networkType)) { 1939// final NetworkStateTracker tracker = mNetTrackers[networkType]; 1940// if (tracker != null) { 1941// tracker.setPolicyDataEnable(enabled); 1942// } 1943// } 1944 } 1945 1946 private void enforceAccessPermission() { 1947 mContext.enforceCallingOrSelfPermission( 1948 android.Manifest.permission.ACCESS_NETWORK_STATE, 1949 "ConnectivityService"); 1950 } 1951 1952 private void enforceChangePermission() { 1953 mContext.enforceCallingOrSelfPermission( 1954 android.Manifest.permission.CHANGE_NETWORK_STATE, 1955 "ConnectivityService"); 1956 } 1957 1958 // TODO Make this a special check when it goes public 1959 private void enforceTetherChangePermission() { 1960 mContext.enforceCallingOrSelfPermission( 1961 android.Manifest.permission.CHANGE_NETWORK_STATE, 1962 "ConnectivityService"); 1963 } 1964 1965 private void enforceTetherAccessPermission() { 1966 mContext.enforceCallingOrSelfPermission( 1967 android.Manifest.permission.ACCESS_NETWORK_STATE, 1968 "ConnectivityService"); 1969 } 1970 1971 private void enforceConnectivityInternalPermission() { 1972 mContext.enforceCallingOrSelfPermission( 1973 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1974 "ConnectivityService"); 1975 } 1976 1977 private void enforceMarkNetworkSocketPermission() { 1978 //Media server special case 1979 if (Binder.getCallingUid() == Process.MEDIA_UID) { 1980 return; 1981 } 1982 mContext.enforceCallingOrSelfPermission( 1983 android.Manifest.permission.MARK_NETWORK_SOCKET, 1984 "ConnectivityService"); 1985 } 1986 1987 /** 1988 * Handle a {@code DISCONNECTED} event. If this pertains to the non-active 1989 * network, we ignore it. If it is for the active network, we send out a 1990 * broadcast. But first, we check whether it might be possible to connect 1991 * to a different network. 1992 * @param info the {@code NetworkInfo} for the network 1993 */ 1994 private void handleDisconnect(NetworkInfo info) { 1995 1996 int prevNetType = info.getType(); 1997 1998 mNetTrackers[prevNetType].setTeardownRequested(false); 1999 int thisNetId = mNetTrackers[prevNetType].getNetwork().netId; 2000 2001 // Remove idletimer previously setup in {@code handleConnect} 2002// Already in place in new function. This is dead code. 2003// if (mNetConfigs[prevNetType].isDefault()) { 2004// removeDataActivityTracking(prevNetType); 2005// } 2006 2007 /* 2008 * If the disconnected network is not the active one, then don't report 2009 * this as a loss of connectivity. What probably happened is that we're 2010 * getting the disconnect for a network that we explicitly disabled 2011 * in accordance with network preference policies. 2012 */ 2013 if (!mNetConfigs[prevNetType].isDefault()) { 2014 List<Integer> pids = mNetRequestersPids[prevNetType]; 2015 for (Integer pid : pids) { 2016 // will remove them because the net's no longer connected 2017 // need to do this now as only now do we know the pids and 2018 // can properly null things that are no longer referenced. 2019 reassessPidDns(pid.intValue(), false); 2020 } 2021 } 2022 2023 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 2024 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2025 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2026 if (info.isFailover()) { 2027 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2028 info.setFailover(false); 2029 } 2030 if (info.getReason() != null) { 2031 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2032 } 2033 if (info.getExtraInfo() != null) { 2034 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2035 info.getExtraInfo()); 2036 } 2037 2038 if (mNetConfigs[prevNetType].isDefault()) { 2039 tryFailover(prevNetType); 2040 if (mActiveDefaultNetwork != -1) { 2041 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2042 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 2043 } else { 2044 mDefaultInetConditionPublished = 0; // we're not connected anymore 2045 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2046 } 2047 } 2048 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2049 2050 // Reset interface if no other connections are using the same interface 2051 boolean doReset = true; 2052 LinkProperties linkProperties = mNetTrackers[prevNetType].getLinkProperties(); 2053 if (linkProperties != null) { 2054 String oldIface = linkProperties.getInterfaceName(); 2055 if (TextUtils.isEmpty(oldIface) == false) { 2056 for (NetworkStateTracker networkStateTracker : mNetTrackers) { 2057 if (networkStateTracker == null) continue; 2058 NetworkInfo networkInfo = networkStateTracker.getNetworkInfo(); 2059 if (networkInfo.isConnected() && networkInfo.getType() != prevNetType) { 2060 LinkProperties l = networkStateTracker.getLinkProperties(); 2061 if (l == null) continue; 2062 if (oldIface.equals(l.getInterfaceName())) { 2063 doReset = false; 2064 break; 2065 } 2066 } 2067 } 2068 } 2069 } 2070 2071 // do this before we broadcast the change 2072// Already done in new function. This is dead code. 2073// handleConnectivityChange(prevNetType, doReset); 2074 2075 final Intent immediateIntent = new Intent(intent); 2076 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 2077 sendStickyBroadcast(immediateIntent); 2078 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 2079 /* 2080 * If the failover network is already connected, then immediately send 2081 * out a followup broadcast indicating successful failover 2082 */ 2083 if (mActiveDefaultNetwork != -1) { 2084 sendConnectedBroadcastDelayed(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(), 2085 getConnectivityChangeDelay()); 2086 } 2087 try { 2088// mNetd.removeNetwork(thisNetId); 2089 } catch (Exception e) { 2090 loge("Exception removing network: " + e); 2091 } finally { 2092 mNetTrackers[prevNetType].setNetId(INVALID_NET_ID); 2093 } 2094 } 2095 2096 private void tryFailover(int prevNetType) { 2097 /* 2098 * If this is a default network, check if other defaults are available. 2099 * Try to reconnect on all available and let them hash it out when 2100 * more than one connects. 2101 */ 2102 if (mNetConfigs[prevNetType].isDefault()) { 2103 if (mActiveDefaultNetwork == prevNetType) { 2104 if (DBG) { 2105 log("tryFailover: set mActiveDefaultNetwork=-1, prevNetType=" + prevNetType); 2106 } 2107 mActiveDefaultNetwork = -1; 2108 try { 2109 mNetd.clearDefaultNetId(); 2110 } catch (Exception e) { 2111 loge("Exception clearing default network :" + e); 2112 } 2113 } 2114 2115 // don't signal a reconnect for anything lower or equal priority than our 2116 // current connected default 2117 // TODO - don't filter by priority now - nice optimization but risky 2118// int currentPriority = -1; 2119// if (mActiveDefaultNetwork != -1) { 2120// currentPriority = mNetConfigs[mActiveDefaultNetwork].mPriority; 2121// } 2122 2123 for (int checkType=0; checkType <= ConnectivityManager.MAX_NETWORK_TYPE; checkType++) { 2124 if (checkType == prevNetType) continue; 2125 if (mNetConfigs[checkType] == null) continue; 2126 if (!mNetConfigs[checkType].isDefault()) continue; 2127 if (mNetTrackers[checkType] == null) continue; 2128 2129// Enabling the isAvailable() optimization caused mobile to not get 2130// selected if it was in the middle of error handling. Specifically 2131// a moble connection that took 30 seconds to complete the DEACTIVATE_DATA_CALL 2132// would not be available and we wouldn't get connected to anything. 2133// So removing the isAvailable() optimization below for now. TODO: This 2134// optimization should work and we need to investigate why it doesn't work. 2135// This could be related to how DEACTIVATE_DATA_CALL is reporting its 2136// complete before it is really complete. 2137 2138// if (!mNetTrackers[checkType].isAvailable()) continue; 2139 2140// if (currentPriority >= mNetConfigs[checkType].mPriority) continue; 2141 2142 NetworkStateTracker checkTracker = mNetTrackers[checkType]; 2143 NetworkInfo checkInfo = checkTracker.getNetworkInfo(); 2144 if (!checkInfo.isConnectedOrConnecting() || checkTracker.isTeardownRequested()) { 2145 checkInfo.setFailover(true); 2146 checkTracker.reconnect(); 2147 } 2148 if (DBG) log("Attempting to switch to " + checkInfo.getTypeName()); 2149 } 2150 } 2151 } 2152 2153 public void sendConnectedBroadcast(NetworkInfo info) { 2154 enforceConnectivityInternalPermission(); 2155 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2156 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 2157 } 2158 2159 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 2160 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2161 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 2162 } 2163 2164 private void sendInetConditionBroadcast(NetworkInfo info) { 2165 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 2166 } 2167 2168 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 2169 if (mLockdownTracker != null) { 2170 info = mLockdownTracker.augmentNetworkInfo(info); 2171 } 2172 2173 Intent intent = new Intent(bcastType); 2174 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2175 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2176 if (info.isFailover()) { 2177 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2178 info.setFailover(false); 2179 } 2180 if (info.getReason() != null) { 2181 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2182 } 2183 if (info.getExtraInfo() != null) { 2184 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2185 info.getExtraInfo()); 2186 } 2187 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2188 return intent; 2189 } 2190 2191 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 2192 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 2193 } 2194 2195 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 2196 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 2197 } 2198 2199 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 2200 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 2201 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 2202 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 2203 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 2204 final long ident = Binder.clearCallingIdentity(); 2205 try { 2206 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 2207 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 2208 } finally { 2209 Binder.restoreCallingIdentity(ident); 2210 } 2211 } 2212 2213 private void sendStickyBroadcast(Intent intent) { 2214 synchronized(this) { 2215 if (!mSystemReady) { 2216 mInitialBroadcast = new Intent(intent); 2217 } 2218 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2219 if (VDBG) { 2220 log("sendStickyBroadcast: action=" + intent.getAction()); 2221 } 2222 2223 final long ident = Binder.clearCallingIdentity(); 2224 try { 2225 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2226 } finally { 2227 Binder.restoreCallingIdentity(ident); 2228 } 2229 } 2230 } 2231 2232 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 2233 if (delayMs <= 0) { 2234 sendStickyBroadcast(intent); 2235 } else { 2236 if (VDBG) { 2237 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 2238 + intent.getAction()); 2239 } 2240 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2241 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 2242 } 2243 } 2244 2245 void systemReady() { 2246 mCaptivePortalTracker = CaptivePortalTracker.makeCaptivePortalTracker(mContext, this); 2247 loadGlobalProxy(); 2248 2249 synchronized(this) { 2250 mSystemReady = true; 2251 if (mInitialBroadcast != null) { 2252 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 2253 mInitialBroadcast = null; 2254 } 2255 } 2256 // load the global proxy at startup 2257 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 2258 2259 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 2260 // for user to unlock device. 2261 if (!updateLockdownVpn()) { 2262 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 2263 mContext.registerReceiver(mUserPresentReceiver, filter); 2264 } 2265 } 2266 2267 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 2268 @Override 2269 public void onReceive(Context context, Intent intent) { 2270 // Try creating lockdown tracker, since user present usually means 2271 // unlocked keystore. 2272 if (updateLockdownVpn()) { 2273 mContext.unregisterReceiver(this); 2274 } 2275 } 2276 }; 2277 2278 private boolean isNewNetTypePreferredOverCurrentNetType(int type) { 2279 if (((type != mNetworkPreference) 2280 && (mNetConfigs[mActiveDefaultNetwork].priority > mNetConfigs[type].priority)) 2281 || (mNetworkPreference == mActiveDefaultNetwork)) { 2282 return false; 2283 } 2284 return true; 2285 } 2286 2287 private void handleConnect(NetworkInfo info) { 2288 final int newNetType = info.getType(); 2289 2290 // snapshot isFailover, because sendConnectedBroadcast() resets it 2291 boolean isFailover = info.isFailover(); 2292 final NetworkStateTracker thisNet = mNetTrackers[newNetType]; 2293 final String thisIface = thisNet.getLinkProperties().getInterfaceName(); 2294 2295 if (VDBG) { 2296 log("handleConnect: E newNetType=" + newNetType + " thisIface=" + thisIface 2297 + " isFailover" + isFailover); 2298 } 2299 2300 // if this is a default net and other default is running 2301 // kill the one not preferred 2302 if (mNetConfigs[newNetType].isDefault()) { 2303 if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != newNetType) { 2304 if (isNewNetTypePreferredOverCurrentNetType(newNetType)) { 2305 String teardownPolicy = SystemProperties.get("net.teardownPolicy"); 2306 if (TextUtils.equals(teardownPolicy, "keep") == false) { 2307 // tear down the other 2308 NetworkStateTracker otherNet = 2309 mNetTrackers[mActiveDefaultNetwork]; 2310 if (DBG) { 2311 log("Policy requires " + otherNet.getNetworkInfo().getTypeName() + 2312 " teardown"); 2313 } 2314 if (!teardown(otherNet)) { 2315 loge("Network declined teardown request"); 2316 teardown(thisNet); 2317 return; 2318 } 2319 } else { 2320 //TODO - remove 2321 loge("network teardown skipped due to net.teardownPolicy setting"); 2322 } 2323 } else { 2324 // don't accept this one 2325 if (VDBG) { 2326 log("Not broadcasting CONNECT_ACTION " + 2327 "to torn down network " + info.getTypeName()); 2328 } 2329 teardown(thisNet); 2330 return; 2331 } 2332 } 2333 int thisNetId = nextNetId(); 2334 thisNet.setNetId(thisNetId); 2335 try { 2336// mNetd.createNetwork(thisNetId, thisIface); 2337 } catch (Exception e) { 2338 loge("Exception creating network :" + e); 2339 teardown(thisNet); 2340 return; 2341 } 2342// Already in place in new function. This is dead code. 2343// setupDataActivityTracking(newNetType); 2344 synchronized (ConnectivityService.this) { 2345 // have a new default network, release the transition wakelock in a second 2346 // if it's held. The second pause is to allow apps to reconnect over the 2347 // new network 2348 if (mNetTransitionWakeLock.isHeld()) { 2349 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2350 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 2351 mNetTransitionWakeLockSerialNumber, 0), 2352 1000); 2353 } 2354 } 2355 mActiveDefaultNetwork = newNetType; 2356 try { 2357 mNetd.setDefaultNetId(thisNetId); 2358 } catch (Exception e) { 2359 loge("Exception setting default network :" + e); 2360 } 2361 // this will cause us to come up initially as unconnected and switching 2362 // to connected after our normal pause unless somebody reports us as reall 2363 // disconnected 2364 mDefaultInetConditionPublished = 0; 2365 mDefaultConnectionSequence++; 2366 mInetConditionChangeInFlight = false; 2367 // Don't do this - if we never sign in stay, grey 2368 //reportNetworkCondition(mActiveDefaultNetwork, 100); 2369 updateNetworkSettings(thisNet); 2370 } else { 2371 int thisNetId = nextNetId(); 2372 thisNet.setNetId(thisNetId); 2373 try { 2374// mNetd.createNetwork(thisNetId, thisIface); 2375 } catch (Exception e) { 2376 loge("Exception creating network :" + e); 2377 teardown(thisNet); 2378 return; 2379 } 2380 } 2381 thisNet.setTeardownRequested(false); 2382// Already in place in new function. This is dead code. 2383// updateMtuSizeSettings(thisNet); 2384// handleConnectivityChange(newNetType, false); 2385 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 2386 2387 // notify battery stats service about this network 2388 if (thisIface != null) { 2389 try { 2390 BatteryStatsService.getService().noteNetworkInterfaceType(thisIface, newNetType); 2391 } catch (RemoteException e) { 2392 // ignored; service lives in system_server 2393 } 2394 } 2395 } 2396 2397 /** @hide */ 2398 @Override 2399 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 2400 enforceConnectivityInternalPermission(); 2401 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 2402// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 2403 } 2404 2405 /** 2406 * Setup data activity tracking for the given network. 2407 * 2408 * Every {@code setupDataActivityTracking} should be paired with a 2409 * {@link #removeDataActivityTracking} for cleanup. 2410 */ 2411 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 2412 final String iface = networkAgent.linkProperties.getInterfaceName(); 2413 2414 final int timeout; 2415 int type = ConnectivityManager.TYPE_NONE; 2416 2417 if (networkAgent.networkCapabilities.hasTransport( 2418 NetworkCapabilities.TRANSPORT_CELLULAR)) { 2419 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2420 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 2421 5); 2422 type = ConnectivityManager.TYPE_MOBILE; 2423 } else if (networkAgent.networkCapabilities.hasTransport( 2424 NetworkCapabilities.TRANSPORT_WIFI)) { 2425 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2426 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 2427 0); 2428 type = ConnectivityManager.TYPE_WIFI; 2429 } else { 2430 // do not track any other networks 2431 timeout = 0; 2432 } 2433 2434 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 2435 try { 2436 mNetd.addIdleTimer(iface, timeout, type); 2437 } catch (Exception e) { 2438 // You shall not crash! 2439 loge("Exception in setupDataActivityTracking " + e); 2440 } 2441 } 2442 } 2443 2444 /** 2445 * Remove data activity tracking when network disconnects. 2446 */ 2447 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 2448 final String iface = networkAgent.linkProperties.getInterfaceName(); 2449 final NetworkCapabilities caps = networkAgent.networkCapabilities; 2450 2451 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 2452 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 2453 try { 2454 // the call fails silently if no idletimer setup for this interface 2455 mNetd.removeIdleTimer(iface); 2456 } catch (Exception e) { 2457 loge("Exception in removeDataActivityTracking " + e); 2458 } 2459 } 2460 } 2461 2462 /** 2463 * After a change in the connectivity state of a network. We're mainly 2464 * concerned with making sure that the list of DNS servers is set up 2465 * according to which networks are connected, and ensuring that the 2466 * right routing table entries exist. 2467 * 2468 * TODO - delete when we're sure all this functionallity is captured. 2469 */ 2470 private void handleConnectivityChange(int netType, LinkProperties curLp, boolean doReset) { 2471 int resetMask = doReset ? NetworkUtils.RESET_ALL_ADDRESSES : 0; 2472 boolean exempt = ConnectivityManager.isNetworkTypeExempt(netType); 2473 if (VDBG) { 2474 log("handleConnectivityChange: netType=" + netType + " doReset=" + doReset 2475 + " resetMask=" + resetMask); 2476 } 2477 2478 /* 2479 * If a non-default network is enabled, add the host routes that 2480 * will allow it's DNS servers to be accessed. 2481 */ 2482 handleDnsConfigurationChange(netType); 2483 2484 LinkProperties newLp = null; 2485 2486 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2487 newLp = mNetTrackers[netType].getLinkProperties(); 2488 if (VDBG) { 2489 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2490 " doReset=" + doReset + " resetMask=" + resetMask + 2491 "\n curLp=" + curLp + 2492 "\n newLp=" + newLp); 2493 } 2494 2495 if (curLp != null) { 2496 if (curLp.isIdenticalInterfaceName(newLp)) { 2497 CompareResult<LinkAddress> car = curLp.compareAddresses(newLp); 2498 if ((car.removed.size() != 0) || (car.added.size() != 0)) { 2499 for (LinkAddress linkAddr : car.removed) { 2500 if (linkAddr.getAddress() instanceof Inet4Address) { 2501 resetMask |= NetworkUtils.RESET_IPV4_ADDRESSES; 2502 } 2503 if (linkAddr.getAddress() instanceof Inet6Address) { 2504 resetMask |= NetworkUtils.RESET_IPV6_ADDRESSES; 2505 } 2506 } 2507 if (DBG) { 2508 log("handleConnectivityChange: addresses changed" + 2509 " linkProperty[" + netType + "]:" + " resetMask=" + resetMask + 2510 "\n car=" + car); 2511 } 2512 } else { 2513 if (VDBG) { 2514 log("handleConnectivityChange: addresses are the same reset per" + 2515 " doReset linkProperty[" + netType + "]:" + 2516 " resetMask=" + resetMask); 2517 } 2518 } 2519 } else { 2520 resetMask = NetworkUtils.RESET_ALL_ADDRESSES; 2521 if (DBG) { 2522 log("handleConnectivityChange: interface not not equivalent reset both" + 2523 " linkProperty[" + netType + "]:" + 2524 " resetMask=" + resetMask); 2525 } 2526 } 2527 } 2528 if (mNetConfigs[netType].isDefault()) { 2529 handleApplyDefaultProxy(newLp.getHttpProxy()); 2530 } 2531 } else { 2532 if (VDBG) { 2533 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2534 " doReset=" + doReset + " resetMask=" + resetMask + 2535 "\n curLp=" + curLp + 2536 "\n newLp= null"); 2537 } 2538 } 2539 mCurrentLinkProperties[netType] = newLp; 2540 boolean resetDns = updateRoutes(newLp, curLp, mNetConfigs[netType].isDefault(), exempt, 2541 mNetTrackers[netType].getNetwork().netId); 2542 2543 if (resetMask != 0 || resetDns) { 2544 if (VDBG) log("handleConnectivityChange: resetting"); 2545 if (curLp != null) { 2546 if (VDBG) log("handleConnectivityChange: resetting curLp=" + curLp); 2547 for (String iface : curLp.getAllInterfaceNames()) { 2548 if (TextUtils.isEmpty(iface) == false) { 2549 if (resetMask != 0) { 2550 if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")"); 2551 NetworkUtils.resetConnections(iface, resetMask); 2552 2553 // Tell VPN the interface is down. It is a temporary 2554 // but effective fix to make VPN aware of the change. 2555 if ((resetMask & NetworkUtils.RESET_IPV4_ADDRESSES) != 0) { 2556 synchronized(mVpns) { 2557 for (int i = 0; i < mVpns.size(); i++) { 2558 mVpns.valueAt(i).interfaceStatusChanged(iface, false); 2559 } 2560 } 2561 } 2562 } 2563 } else { 2564 loge("Can't reset connection for type "+netType); 2565 } 2566 } 2567 if (resetDns) { 2568 flushVmDnsCache(); 2569 if (VDBG) log("resetting DNS cache for type " + netType); 2570 try { 2571 mNetd.flushNetworkDnsCache(mNetTrackers[netType].getNetwork().netId); 2572 } catch (Exception e) { 2573 // never crash - catch them all 2574 if (DBG) loge("Exception resetting dns cache: " + e); 2575 } 2576 } 2577 } 2578 } 2579 2580 // TODO: Temporary notifying upstread change to Tethering. 2581 // @see bug/4455071 2582 /** Notify TetheringService if interface name has been changed. */ 2583 if (TextUtils.equals(mNetTrackers[netType].getNetworkInfo().getReason(), 2584 PhoneConstants.REASON_LINK_PROPERTIES_CHANGED)) { 2585 if (isTetheringSupported()) { 2586 mTethering.handleTetherIfaceChange(); 2587 } 2588 } 2589 } 2590 2591 /** 2592 * Add and remove routes using the old properties (null if not previously connected), 2593 * new properties (null if becoming disconnected). May even be double null, which 2594 * is a noop. 2595 * Uses isLinkDefault to determine if default routes should be set or conversely if 2596 * host routes should be set to the dns servers 2597 * returns a boolean indicating the routes changed 2598 */ 2599 private boolean updateRoutes(LinkProperties newLp, LinkProperties curLp, 2600 boolean isLinkDefault, boolean exempt, int netId) { 2601 Collection<RouteInfo> routesToAdd = null; 2602 CompareResult<InetAddress> dnsDiff = new CompareResult<InetAddress>(); 2603 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 2604 if (curLp != null) { 2605 // check for the delta between the current set and the new 2606 routeDiff = curLp.compareAllRoutes(newLp); 2607 dnsDiff = curLp.compareDnses(newLp); 2608 } else if (newLp != null) { 2609 routeDiff.added = newLp.getAllRoutes(); 2610 dnsDiff.added = newLp.getDnses(); 2611 } 2612 2613 boolean routesChanged = (routeDiff.removed.size() != 0 || routeDiff.added.size() != 0); 2614 2615 for (RouteInfo r : routeDiff.removed) { 2616 if (isLinkDefault || ! r.isDefaultRoute()) { 2617 if (VDBG) log("updateRoutes: default remove route r=" + r); 2618 removeRoute(curLp, r, TO_DEFAULT_TABLE, netId); 2619 } 2620 if (isLinkDefault == false) { 2621 // remove from a secondary route table 2622 removeRoute(curLp, r, TO_SECONDARY_TABLE, netId); 2623 } 2624 } 2625 2626 for (RouteInfo r : routeDiff.added) { 2627 if (isLinkDefault || ! r.isDefaultRoute()) { 2628 addRoute(newLp, r, TO_DEFAULT_TABLE, exempt, netId); 2629 } else { 2630 // add to a secondary route table 2631 addRoute(newLp, r, TO_SECONDARY_TABLE, UNEXEMPT, netId); 2632 2633 // many radios add a default route even when we don't want one. 2634 // remove the default route unless somebody else has asked for it 2635 String ifaceName = newLp.getInterfaceName(); 2636 synchronized (mRoutesLock) { 2637 if (!TextUtils.isEmpty(ifaceName) && !mAddedRoutes.contains(r)) { 2638 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 2639 try { 2640 mNetd.removeRoute(netId, r); 2641 } catch (Exception e) { 2642 // never crash - catch them all 2643 if (DBG) loge("Exception trying to remove a route: " + e); 2644 } 2645 } 2646 } 2647 } 2648 } 2649 2650 return routesChanged; 2651 } 2652 2653 /** 2654 * Reads the network specific MTU size from reources. 2655 * and set it on it's iface. 2656 */ 2657 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 2658 final String iface = newLp.getInterfaceName(); 2659 final int mtu = newLp.getMtu(); 2660 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 2661 if (VDBG) log("identical MTU - not setting"); 2662 return; 2663 } 2664 2665 if (mtu < 68 || mtu > 10000) { 2666 loge("Unexpected mtu value: " + mtu + ", " + iface); 2667 return; 2668 } 2669 2670 try { 2671 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 2672 mNetd.setMtu(iface, mtu); 2673 } catch (Exception e) { 2674 Slog.e(TAG, "exception in setMtu()" + e); 2675 } 2676 } 2677 2678 /** 2679 * Reads the network specific TCP buffer sizes from SystemProperties 2680 * net.tcp.buffersize.[default|wifi|umts|edge|gprs] and set them for system 2681 * wide use 2682 */ 2683 private void updateNetworkSettings(NetworkStateTracker nt) { 2684 String key = nt.getTcpBufferSizesPropName(); 2685 String bufferSizes = key == null ? null : SystemProperties.get(key); 2686 2687 if (TextUtils.isEmpty(bufferSizes)) { 2688 if (VDBG) log(key + " not found in system properties. Using defaults"); 2689 2690 // Setting to default values so we won't be stuck to previous values 2691 key = "net.tcp.buffersize.default"; 2692 bufferSizes = SystemProperties.get(key); 2693 } 2694 2695 // Set values in kernel 2696 if (bufferSizes.length() != 0) { 2697 if (VDBG) { 2698 log("Setting TCP values: [" + bufferSizes 2699 + "] which comes from [" + key + "]"); 2700 } 2701 setBufferSize(bufferSizes); 2702 } 2703 2704 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 2705 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 2706 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 2707 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 2708 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 2709 if (rwndValue != 0) { 2710 SystemProperties.set(sysctlKey, rwndValue.toString()); 2711 } 2712 } 2713 2714 /** 2715 * Writes TCP buffer sizes to /sys/kernel/ipv4/tcp_[r/w]mem_[min/def/max] 2716 * which maps to /proc/sys/net/ipv4/tcp_rmem and tcpwmem 2717 * 2718 * @param bufferSizes in the format of "readMin, readInitial, readMax, 2719 * writeMin, writeInitial, writeMax" 2720 */ 2721 private void setBufferSize(String bufferSizes) { 2722 try { 2723 String[] values = bufferSizes.split(","); 2724 2725 if (values.length == 6) { 2726 final String prefix = "/sys/kernel/ipv4/tcp_"; 2727 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 2728 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 2729 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 2730 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 2731 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 2732 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 2733 } else { 2734 loge("Invalid buffersize string: " + bufferSizes); 2735 } 2736 } catch (IOException e) { 2737 loge("Can't set tcp buffer sizes:" + e); 2738 } 2739 } 2740 2741 /** 2742 * Adjust the per-process dns entries (net.dns<x>.<pid>) based 2743 * on the highest priority active net which this process requested. 2744 * If there aren't any, clear it out 2745 */ 2746 private void reassessPidDns(int pid, boolean doBump) 2747 { 2748 if (VDBG) log("reassessPidDns for pid " + pid); 2749 Integer myPid = new Integer(pid); 2750 for(int i : mPriorityList) { 2751 if (mNetConfigs[i].isDefault()) { 2752 continue; 2753 } 2754 NetworkStateTracker nt = mNetTrackers[i]; 2755 if (nt.getNetworkInfo().isConnected() && 2756 !nt.isTeardownRequested()) { 2757 LinkProperties p = nt.getLinkProperties(); 2758 if (p == null) continue; 2759 if (mNetRequestersPids[i].contains(myPid)) { 2760 try { 2761 // TODO: Reimplement this via local variable in bionic. 2762 // mNetd.setDnsNetworkForPid(nt.getNetwork().netId, pid); 2763 } catch (Exception e) { 2764 Slog.e(TAG, "exception reasseses pid dns: " + e); 2765 } 2766 return; 2767 } 2768 } 2769 } 2770 // nothing found - delete 2771 try { 2772 // TODO: Reimplement this via local variable in bionic. 2773 // mNetd.clearDnsNetworkForPid(pid); 2774 } catch (Exception e) { 2775 Slog.e(TAG, "exception clear interface from pid: " + e); 2776 } 2777 } 2778 2779 private void flushVmDnsCache() { 2780 /* 2781 * Tell the VMs to toss their DNS caches 2782 */ 2783 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 2784 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 2785 /* 2786 * Connectivity events can happen before boot has completed ... 2787 */ 2788 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2789 final long ident = Binder.clearCallingIdentity(); 2790 try { 2791 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 2792 } finally { 2793 Binder.restoreCallingIdentity(ident); 2794 } 2795 } 2796 2797 // Caller must grab mDnsLock. 2798 private void updateDnsLocked(String network, int netId, 2799 Collection<InetAddress> dnses, String domains) { 2800 int last = 0; 2801 if (dnses.size() == 0 && mDefaultDns != null) { 2802 dnses = new ArrayList(); 2803 dnses.add(mDefaultDns); 2804 if (DBG) { 2805 loge("no dns provided for " + network + " - using " + mDefaultDns.getHostAddress()); 2806 } 2807 } 2808 2809 try { 2810 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), domains); 2811 2812 for (InetAddress dns : dnses) { 2813 ++last; 2814 String key = "net.dns" + last; 2815 String value = dns.getHostAddress(); 2816 SystemProperties.set(key, value); 2817 } 2818 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 2819 String key = "net.dns" + i; 2820 SystemProperties.set(key, ""); 2821 } 2822 mNumDnsEntries = last; 2823 } catch (Exception e) { 2824 loge("exception setting default dns interface: " + e); 2825 } 2826 } 2827 2828 private void handleDnsConfigurationChange(int netType) { 2829 // add default net's dns entries 2830 NetworkStateTracker nt = mNetTrackers[netType]; 2831 if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) { 2832 LinkProperties p = nt.getLinkProperties(); 2833 if (p == null) return; 2834 Collection<InetAddress> dnses = p.getDnses(); 2835 int netId = nt.getNetwork().netId; 2836 if (mNetConfigs[netType].isDefault()) { 2837 String network = nt.getNetworkInfo().getTypeName(); 2838 synchronized (mDnsLock) { 2839 updateDnsLocked(network, netId, dnses, p.getDomains()); 2840 } 2841 } else { 2842 try { 2843 mNetd.setDnsServersForNetwork(netId, 2844 NetworkUtils.makeStrings(dnses), p.getDomains()); 2845 } catch (Exception e) { 2846 if (DBG) loge("exception setting dns servers: " + e); 2847 } 2848 // set per-pid dns for attached secondary nets 2849 List<Integer> pids = mNetRequestersPids[netType]; 2850 for (Integer pid : pids) { 2851 try { 2852 // TODO: Reimplement this via local variable in bionic. 2853 // mNetd.setDnsNetworkForPid(netId, pid); 2854 } catch (Exception e) { 2855 Slog.e(TAG, "exception setting interface for pid: " + e); 2856 } 2857 } 2858 } 2859 flushVmDnsCache(); 2860 } 2861 } 2862 2863 private int getRestoreDefaultNetworkDelay(int networkType) { 2864 String restoreDefaultNetworkDelayStr = SystemProperties.get( 2865 NETWORK_RESTORE_DELAY_PROP_NAME); 2866 if(restoreDefaultNetworkDelayStr != null && 2867 restoreDefaultNetworkDelayStr.length() != 0) { 2868 try { 2869 return Integer.valueOf(restoreDefaultNetworkDelayStr); 2870 } catch (NumberFormatException e) { 2871 } 2872 } 2873 // if the system property isn't set, use the value for the apn type 2874 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 2875 2876 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 2877 (mNetConfigs[networkType] != null)) { 2878 ret = mNetConfigs[networkType].restoreTime; 2879 } 2880 return ret; 2881 } 2882 2883 @Override 2884 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 2885 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 2886 if (mContext.checkCallingOrSelfPermission( 2887 android.Manifest.permission.DUMP) 2888 != PackageManager.PERMISSION_GRANTED) { 2889 pw.println("Permission Denial: can't dump ConnectivityService " + 2890 "from from pid=" + Binder.getCallingPid() + ", uid=" + 2891 Binder.getCallingUid()); 2892 return; 2893 } 2894 2895 pw.println("NetworkFactories for:"); 2896 pw.increaseIndent(); 2897 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2898 pw.println(nfi.name); 2899 } 2900 pw.decreaseIndent(); 2901 pw.println(); 2902 2903 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 2904 pw.print("Active default network: "); 2905 if (defaultNai == null) { 2906 pw.println("none"); 2907 } else { 2908 pw.println(defaultNai.network.netId); 2909 } 2910 pw.println(); 2911 2912 pw.println("Current Networks:"); 2913 pw.increaseIndent(); 2914 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2915 pw.println(nai.toString()); 2916 pw.increaseIndent(); 2917 pw.println("Requests:"); 2918 pw.increaseIndent(); 2919 for (int i = 0; i < nai.networkRequests.size(); i++) { 2920 pw.println(nai.networkRequests.valueAt(i).toString()); 2921 } 2922 pw.decreaseIndent(); 2923 pw.println("Lingered:"); 2924 pw.increaseIndent(); 2925 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 2926 pw.decreaseIndent(); 2927 pw.decreaseIndent(); 2928 } 2929 pw.decreaseIndent(); 2930 pw.println(); 2931 2932 pw.println("Network Requests:"); 2933 pw.increaseIndent(); 2934 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2935 pw.println(nri.toString()); 2936 } 2937 pw.println(); 2938 pw.decreaseIndent(); 2939 2940 synchronized (this) { 2941 pw.println("NetworkTranstionWakeLock is currently " + 2942 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 2943 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 2944 } 2945 pw.println(); 2946 2947 mTethering.dump(fd, pw, args); 2948 2949 if (mInetLog != null) { 2950 pw.println(); 2951 pw.println("Inet condition reports:"); 2952 pw.increaseIndent(); 2953 for(int i = 0; i < mInetLog.size(); i++) { 2954 pw.println(mInetLog.get(i)); 2955 } 2956 pw.decreaseIndent(); 2957 } 2958 } 2959 2960 // must be stateless - things change under us. 2961 private class NetworkStateTrackerHandler extends Handler { 2962 public NetworkStateTrackerHandler(Looper looper) { 2963 super(looper); 2964 } 2965 2966 @Override 2967 public void handleMessage(Message msg) { 2968 NetworkInfo info; 2969 switch (msg.what) { 2970 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 2971 handleAsyncChannelHalfConnect(msg); 2972 break; 2973 } 2974 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 2975 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2976 if (nai != null) nai.asyncChannel.disconnect(); 2977 break; 2978 } 2979 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 2980 handleAsyncChannelDisconnected(msg); 2981 break; 2982 } 2983 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 2984 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2985 if (nai == null) { 2986 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 2987 } else { 2988 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 2989 } 2990 break; 2991 } 2992 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 2993 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2994 if (nai == null) { 2995 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 2996 } else { 2997 if (VDBG) log("Update of Linkproperties for " + nai.name()); 2998 LinkProperties oldLp = nai.linkProperties; 2999 nai.linkProperties = (LinkProperties)msg.obj; 3000 updateLinkProperties(nai, oldLp); 3001 } 3002 break; 3003 } 3004 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 3005 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3006 if (nai == null) { 3007 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 3008 break; 3009 } 3010 info = (NetworkInfo) msg.obj; 3011 updateNetworkInfo(nai, info); 3012 break; 3013 } 3014 case NetworkMonitor.EVENT_NETWORK_VALIDATED: { 3015 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 3016 handleConnectionValidated(nai); 3017 break; 3018 } 3019 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 3020 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 3021 handleLingerComplete(nai); 3022 break; 3023 } 3024 case NetworkStateTracker.EVENT_STATE_CHANGED: { 3025 info = (NetworkInfo) msg.obj; 3026 NetworkInfo.State state = info.getState(); 3027 3028 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 3029 (state == NetworkInfo.State.DISCONNECTED) || 3030 (state == NetworkInfo.State.SUSPENDED)) { 3031 log("ConnectivityChange for " + 3032 info.getTypeName() + ": " + 3033 state + "/" + info.getDetailedState()); 3034 } 3035 3036 // Since mobile has the notion of a network/apn that can be used for 3037 // provisioning we need to check every time we're connected as 3038 // CaptiveProtalTracker won't detected it because DCT doesn't report it 3039 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 3040 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 3041 // is received by MDST and sent here as EVENT_STATE_CHANGED. 3042 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 3043 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 3044 Settings.Global.DEVICE_PROVISIONED, 0)) 3045 && (((state == NetworkInfo.State.CONNECTED) 3046 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 3047 || info.isConnectedToProvisioningNetwork())) { 3048 log("ConnectivityChange checkMobileProvisioning for" 3049 + " TYPE_MOBILE or ProvisioningNetwork"); 3050 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 3051 } 3052 3053 EventLogTags.writeConnectivityStateChanged( 3054 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 3055 3056 if (info.isConnectedToProvisioningNetwork()) { 3057 /** 3058 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 3059 * for now its an in between network, its a network that 3060 * is actually a default network but we don't want it to be 3061 * announced as such to keep background applications from 3062 * trying to use it. It turns out that some still try so we 3063 * take the additional step of clearing any default routes 3064 * to the link that may have incorrectly setup by the lower 3065 * levels. 3066 */ 3067 LinkProperties lp = getLinkPropertiesForTypeInternal(info.getType()); 3068 if (DBG) { 3069 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 3070 } 3071 3072 // Clear any default routes setup by the radio so 3073 // any activity by applications trying to use this 3074 // connection will fail until the provisioning network 3075 // is enabled. 3076 for (RouteInfo r : lp.getRoutes()) { 3077 removeRoute(lp, r, TO_DEFAULT_TABLE, 3078 mNetTrackers[info.getType()].getNetwork().netId); 3079 } 3080 } else if (state == NetworkInfo.State.DISCONNECTED) { 3081 } else if (state == NetworkInfo.State.SUSPENDED) { 3082 } else if (state == NetworkInfo.State.CONNECTED) { 3083 // handleConnect(info); 3084 } 3085 if (mLockdownTracker != null) { 3086 mLockdownTracker.onNetworkInfoChanged(info); 3087 } 3088 break; 3089 } 3090 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 3091 info = (NetworkInfo) msg.obj; 3092 // TODO: Temporary allowing network configuration 3093 // change not resetting sockets. 3094 // @see bug/4455071 3095 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 3096 false); 3097 break; 3098 } 3099 case NetworkStateTracker.EVENT_NETWORK_SUBTYPE_CHANGED: { 3100 info = (NetworkInfo) msg.obj; 3101 int type = info.getType(); 3102 if (mNetConfigs[type].isDefault()) updateNetworkSettings(mNetTrackers[type]); 3103 break; 3104 } 3105 } 3106 } 3107 } 3108 3109 private void handleAsyncChannelHalfConnect(Message msg) { 3110 AsyncChannel ac = (AsyncChannel) msg.obj; 3111 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 3112 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3113 if (VDBG) log("NetworkFactory connected"); 3114 // A network factory has connected. Send it all current NetworkRequests. 3115 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3116 if (nri.isRequest == false) continue; 3117 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 3118 ac.sendMessage(NetworkFactoryProtocol.CMD_REQUEST_NETWORK, 3119 (nai != null ? nai.currentScore : 0), 0, nri.request); 3120 } 3121 } else { 3122 loge("Error connecting NetworkFactory"); 3123 mNetworkFactoryInfos.remove(msg.obj); 3124 } 3125 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 3126 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3127 if (VDBG) log("NetworkAgent connected"); 3128 // A network agent has requested a connection. Establish the connection. 3129 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 3130 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 3131 } else { 3132 loge("Error connecting NetworkAgent"); 3133 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 3134 try { 3135 mNetworkAgentInfoForType[nai.networkInfo.getType()].remove(nai); 3136 } catch (NullPointerException e) {} 3137 if (nai != null) { 3138 mNetworkForNetId.remove(nai.network.netId); 3139 } 3140 } 3141 } 3142 } 3143 private void handleAsyncChannelDisconnected(Message msg) { 3144 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3145 if (nai != null) { 3146 if (DBG) { 3147 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 3148 } 3149 // A network agent has disconnected. 3150 // Tell netd to clean up the configuration for this network 3151 // (routing rules, DNS, etc). 3152 try { 3153 mNetd.removeNetwork(nai.network.netId); 3154 } catch (Exception e) { 3155 loge("Exception removing network: " + e); 3156 } 3157 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 3158 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 3159 mNetworkAgentInfos.remove(msg.replyTo); 3160 updateClat(null, nai.linkProperties, nai); 3161 try { 3162 mNetworkAgentInfoForType[nai.networkInfo.getType()].remove(nai); 3163 } catch (NullPointerException e) {} 3164 3165 mNetworkForNetId.remove(nai.network.netId); 3166 // Since we've lost the network, go through all the requests that 3167 // it was satisfying and see if any other factory can satisfy them. 3168 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 3169 for (int i = 0; i < nai.networkRequests.size(); i++) { 3170 NetworkRequest request = nai.networkRequests.valueAt(i); 3171 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 3172 if (VDBG) { 3173 log(" checking request " + request + ", currentNetwork = " + 3174 currentNetwork != null ? currentNetwork.name() : "null"); 3175 } 3176 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 3177 mNetworkForRequestId.remove(request.requestId); 3178 sendUpdatedScoreToFactories(request, 0); 3179 NetworkAgentInfo alternative = null; 3180 for (Map.Entry entry : mNetworkAgentInfos.entrySet()) { 3181 NetworkAgentInfo existing = (NetworkAgentInfo)entry.getValue(); 3182 if (existing.networkInfo.isConnected() && 3183 request.networkCapabilities.satisfiedByNetworkCapabilities( 3184 existing.networkCapabilities) && 3185 (alternative == null || 3186 alternative.currentScore < existing.currentScore)) { 3187 alternative = existing; 3188 } 3189 } 3190 if (alternative != null && !toActivate.contains(alternative)) { 3191 toActivate.add(alternative); 3192 } 3193 } 3194 } 3195 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 3196 removeDataActivityTracking(nai); 3197 mActiveDefaultNetwork = ConnectivityManager.TYPE_NONE; 3198 } 3199 for (NetworkAgentInfo networkToActivate : toActivate) { 3200 networkToActivate.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 3201 } 3202 } 3203 } 3204 3205 private void handleRegisterNetworkRequest(Message msg) { 3206 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 3207 final NetworkCapabilities newCap = nri.request.networkCapabilities; 3208 int score = 0; 3209 3210 // Check for the best currently alive network that satisfies this request 3211 NetworkAgentInfo bestNetwork = null; 3212 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 3213 if (VDBG) log("handleRegisterNetworkRequest checking " + network.name()); 3214 if (newCap.satisfiedByNetworkCapabilities(network.networkCapabilities)) { 3215 if (VDBG) log("apparently satisfied. currentScore=" + network.currentScore); 3216 if ((bestNetwork == null) || bestNetwork.currentScore < network.currentScore) { 3217 bestNetwork = network; 3218 } 3219 } 3220 } 3221 if (bestNetwork != null) { 3222 if (VDBG) log("using " + bestNetwork.name()); 3223 bestNetwork.networkRequests.put(nri.request.requestId, nri.request); 3224 notifyNetworkCallback(bestNetwork, nri); 3225 score = bestNetwork.currentScore; 3226 } 3227 mNetworkRequests.put(nri.request, nri); 3228 if (msg.what == EVENT_REGISTER_NETWORK_REQUEST) { 3229 if (DBG) log("sending new NetworkRequest to factories"); 3230 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3231 nfi.asyncChannel.sendMessage(NetworkFactoryProtocol.CMD_REQUEST_NETWORK, score, 0, nri.request); 3232 } 3233 } 3234 } 3235 3236 private void handleReleaseNetworkRequest(NetworkRequest request) { 3237 if (DBG) log("releasing NetworkRequest " + request); 3238 NetworkRequestInfo nri = mNetworkRequests.remove(request); 3239 if (nri != null) { 3240 // tell the network currently servicing this that it's no longer interested 3241 NetworkAgentInfo affectedNetwork = mNetworkForRequestId.get(nri.request.requestId); 3242 if (affectedNetwork != null) { 3243 mNetworkForRequestId.remove(nri.request.requestId); 3244 affectedNetwork.networkRequests.remove(nri.request.requestId); 3245 if (VDBG) { 3246 log(" Removing from current network " + affectedNetwork.name() + ", leaving " + 3247 affectedNetwork.networkRequests.size() + " requests."); 3248 } 3249 } 3250 3251 if (nri.isRequest) { 3252 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3253 nfi.asyncChannel.sendMessage(NetworkFactoryProtocol.CMD_CANCEL_REQUEST, nri.request); 3254 } 3255 3256 if (affectedNetwork != null) { 3257 // check if this network still has live requests - otherwise, tear down 3258 // TODO - probably push this to the NF/NA 3259 boolean keep = false; 3260 for (int i = 0; i < affectedNetwork.networkRequests.size(); i++) { 3261 NetworkRequest r = affectedNetwork.networkRequests.valueAt(i); 3262 if (mNetworkRequests.get(r).isRequest) { 3263 keep = true; 3264 break; 3265 } 3266 } 3267 if (keep == false) { 3268 if (DBG) log("no live requests for " + affectedNetwork.name() + 3269 "; disconnecting"); 3270 affectedNetwork.asyncChannel.disconnect(); 3271 } 3272 } 3273 } 3274 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 3275 } 3276 } 3277 3278 private class InternalHandler extends Handler { 3279 public InternalHandler(Looper looper) { 3280 super(looper); 3281 } 3282 3283 @Override 3284 public void handleMessage(Message msg) { 3285 NetworkInfo info; 3286 switch (msg.what) { 3287 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 3288 String causedBy = null; 3289 synchronized (ConnectivityService.this) { 3290 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 3291 mNetTransitionWakeLock.isHeld()) { 3292 mNetTransitionWakeLock.release(); 3293 causedBy = mNetTransitionWakeLockCausedBy; 3294 } 3295 } 3296 if (causedBy != null) { 3297 log("NetTransition Wakelock for " + causedBy + " released by timeout"); 3298 } 3299 break; 3300 } 3301 case EVENT_RESTORE_DEFAULT_NETWORK: { 3302 FeatureUser u = (FeatureUser)msg.obj; 3303 u.expire(); 3304 break; 3305 } 3306 case EVENT_INET_CONDITION_CHANGE: { 3307 int netType = msg.arg1; 3308 int condition = msg.arg2; 3309 handleInetConditionChange(netType, condition); 3310 break; 3311 } 3312 case EVENT_INET_CONDITION_HOLD_END: { 3313 int netType = msg.arg1; 3314 int sequence = msg.arg2; 3315 handleInetConditionHoldEnd(netType, sequence); 3316 break; 3317 } 3318 case EVENT_SET_MOBILE_DATA: { 3319 boolean enabled = (msg.arg1 == ENABLED); 3320 handleSetMobileData(enabled); 3321 break; 3322 } 3323 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 3324 handleDeprecatedGlobalHttpProxy(); 3325 break; 3326 } 3327 case EVENT_SET_DEPENDENCY_MET: { 3328 boolean met = (msg.arg1 == ENABLED); 3329 handleSetDependencyMet(msg.arg2, met); 3330 break; 3331 } 3332 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 3333 Intent intent = (Intent)msg.obj; 3334 sendStickyBroadcast(intent); 3335 break; 3336 } 3337 case EVENT_SET_POLICY_DATA_ENABLE: { 3338 final int networkType = msg.arg1; 3339 final boolean enabled = msg.arg2 == ENABLED; 3340 handleSetPolicyDataEnable(networkType, enabled); 3341 break; 3342 } 3343 case EVENT_VPN_STATE_CHANGED: { 3344 if (mLockdownTracker != null) { 3345 mLockdownTracker.onVpnStateChanged((NetworkInfo) msg.obj); 3346 } 3347 break; 3348 } 3349 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 3350 int tag = mEnableFailFastMobileDataTag.get(); 3351 if (msg.arg1 == tag) { 3352 MobileDataStateTracker mobileDst = 3353 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3354 if (mobileDst != null) { 3355 mobileDst.setEnableFailFastMobileData(msg.arg2); 3356 } 3357 } else { 3358 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 3359 + " != tag:" + tag); 3360 } 3361 break; 3362 } 3363 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 3364 handleNetworkSamplingTimeout(); 3365 break; 3366 } 3367 case EVENT_PROXY_HAS_CHANGED: { 3368 handleApplyDefaultProxy((ProxyInfo)msg.obj); 3369 break; 3370 } 3371 case EVENT_REGISTER_NETWORK_FACTORY: { 3372 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 3373 break; 3374 } 3375 case EVENT_UNREGISTER_NETWORK_FACTORY: { 3376 handleUnregisterNetworkFactory((Messenger)msg.obj); 3377 break; 3378 } 3379 case EVENT_REGISTER_NETWORK_AGENT: { 3380 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 3381 break; 3382 } 3383 case EVENT_REGISTER_NETWORK_REQUEST: 3384 case EVENT_REGISTER_NETWORK_LISTENER: { 3385 handleRegisterNetworkRequest(msg); 3386 break; 3387 } 3388 case EVENT_RELEASE_NETWORK_REQUEST: { 3389 handleReleaseNetworkRequest((NetworkRequest) msg.obj); 3390 break; 3391 } 3392 } 3393 } 3394 } 3395 3396 // javadoc from interface 3397 public int tether(String iface) { 3398 enforceTetherChangePermission(); 3399 3400 if (isTetheringSupported()) { 3401 return mTethering.tether(iface); 3402 } else { 3403 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3404 } 3405 } 3406 3407 // javadoc from interface 3408 public int untether(String iface) { 3409 enforceTetherChangePermission(); 3410 3411 if (isTetheringSupported()) { 3412 return mTethering.untether(iface); 3413 } else { 3414 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3415 } 3416 } 3417 3418 // javadoc from interface 3419 public int getLastTetherError(String iface) { 3420 enforceTetherAccessPermission(); 3421 3422 if (isTetheringSupported()) { 3423 return mTethering.getLastTetherError(iface); 3424 } else { 3425 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3426 } 3427 } 3428 3429 // TODO - proper iface API for selection by property, inspection, etc 3430 public String[] getTetherableUsbRegexs() { 3431 enforceTetherAccessPermission(); 3432 if (isTetheringSupported()) { 3433 return mTethering.getTetherableUsbRegexs(); 3434 } else { 3435 return new String[0]; 3436 } 3437 } 3438 3439 public String[] getTetherableWifiRegexs() { 3440 enforceTetherAccessPermission(); 3441 if (isTetheringSupported()) { 3442 return mTethering.getTetherableWifiRegexs(); 3443 } else { 3444 return new String[0]; 3445 } 3446 } 3447 3448 public String[] getTetherableBluetoothRegexs() { 3449 enforceTetherAccessPermission(); 3450 if (isTetheringSupported()) { 3451 return mTethering.getTetherableBluetoothRegexs(); 3452 } else { 3453 return new String[0]; 3454 } 3455 } 3456 3457 public int setUsbTethering(boolean enable) { 3458 enforceTetherChangePermission(); 3459 if (isTetheringSupported()) { 3460 return mTethering.setUsbTethering(enable); 3461 } else { 3462 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3463 } 3464 } 3465 3466 // TODO - move iface listing, queries, etc to new module 3467 // javadoc from interface 3468 public String[] getTetherableIfaces() { 3469 enforceTetherAccessPermission(); 3470 return mTethering.getTetherableIfaces(); 3471 } 3472 3473 public String[] getTetheredIfaces() { 3474 enforceTetherAccessPermission(); 3475 return mTethering.getTetheredIfaces(); 3476 } 3477 3478 public String[] getTetheringErroredIfaces() { 3479 enforceTetherAccessPermission(); 3480 return mTethering.getErroredIfaces(); 3481 } 3482 3483 // if ro.tether.denied = true we default to no tethering 3484 // gservices could set the secure setting to 1 though to enable it on a build where it 3485 // had previously been turned off. 3486 public boolean isTetheringSupported() { 3487 enforceTetherAccessPermission(); 3488 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 3489 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 3490 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0); 3491 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 3492 mTethering.getTetherableWifiRegexs().length != 0 || 3493 mTethering.getTetherableBluetoothRegexs().length != 0) && 3494 mTethering.getUpstreamIfaceTypes().length != 0); 3495 } 3496 3497 // An API NetworkStateTrackers can call when they lose their network. 3498 // This will automatically be cleared after X seconds or a network becomes CONNECTED, 3499 // whichever happens first. The timer is started by the first caller and not 3500 // restarted by subsequent callers. 3501 public void requestNetworkTransitionWakelock(String forWhom) { 3502 enforceConnectivityInternalPermission(); 3503 synchronized (this) { 3504 if (mNetTransitionWakeLock.isHeld()) return; 3505 mNetTransitionWakeLockSerialNumber++; 3506 mNetTransitionWakeLock.acquire(); 3507 mNetTransitionWakeLockCausedBy = forWhom; 3508 } 3509 mHandler.sendMessageDelayed(mHandler.obtainMessage( 3510 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 3511 mNetTransitionWakeLockSerialNumber, 0), 3512 mNetTransitionWakeLockTimeout); 3513 return; 3514 } 3515 3516 // 100 percent is full good, 0 is full bad. 3517 public void reportInetCondition(int networkType, int percentage) { 3518 if (VDBG) log("reportNetworkCondition(" + networkType + ", " + percentage + ")"); 3519 mContext.enforceCallingOrSelfPermission( 3520 android.Manifest.permission.STATUS_BAR, 3521 "ConnectivityService"); 3522 3523 if (DBG) { 3524 int pid = getCallingPid(); 3525 int uid = getCallingUid(); 3526 String s = pid + "(" + uid + ") reports inet is " + 3527 (percentage > 50 ? "connected" : "disconnected") + " (" + percentage + ") on " + 3528 "network Type " + networkType + " at " + GregorianCalendar.getInstance().getTime(); 3529 mInetLog.add(s); 3530 while(mInetLog.size() > INET_CONDITION_LOG_MAX_SIZE) { 3531 mInetLog.remove(0); 3532 } 3533 } 3534 mHandler.sendMessage(mHandler.obtainMessage( 3535 EVENT_INET_CONDITION_CHANGE, networkType, percentage)); 3536 } 3537 3538 public void reportBadNetwork(Network network) { 3539 //TODO 3540 } 3541 3542 private void handleInetConditionChange(int netType, int condition) { 3543 if (mActiveDefaultNetwork == -1) { 3544 if (DBG) log("handleInetConditionChange: no active default network - ignore"); 3545 return; 3546 } 3547 if (mActiveDefaultNetwork != netType) { 3548 if (DBG) log("handleInetConditionChange: net=" + netType + 3549 " != default=" + mActiveDefaultNetwork + " - ignore"); 3550 return; 3551 } 3552 if (VDBG) { 3553 log("handleInetConditionChange: net=" + 3554 netType + ", condition=" + condition + 3555 ",mActiveDefaultNetwork=" + mActiveDefaultNetwork); 3556 } 3557 mDefaultInetCondition = condition; 3558 int delay; 3559 if (mInetConditionChangeInFlight == false) { 3560 if (VDBG) log("handleInetConditionChange: starting a change hold"); 3561 // setup a new hold to debounce this 3562 if (mDefaultInetCondition > 50) { 3563 delay = Settings.Global.getInt(mContext.getContentResolver(), 3564 Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY, 500); 3565 } else { 3566 delay = Settings.Global.getInt(mContext.getContentResolver(), 3567 Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 3000); 3568 } 3569 mInetConditionChangeInFlight = true; 3570 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_INET_CONDITION_HOLD_END, 3571 mActiveDefaultNetwork, mDefaultConnectionSequence), delay); 3572 } else { 3573 // we've set the new condition, when this hold ends that will get picked up 3574 if (VDBG) log("handleInetConditionChange: currently in hold - not setting new end evt"); 3575 } 3576 } 3577 3578 private void handleInetConditionHoldEnd(int netType, int sequence) { 3579 if (DBG) { 3580 log("handleInetConditionHoldEnd: net=" + netType + 3581 ", condition=" + mDefaultInetCondition + 3582 ", published condition=" + mDefaultInetConditionPublished); 3583 } 3584 mInetConditionChangeInFlight = false; 3585 3586 if (mActiveDefaultNetwork == -1) { 3587 if (DBG) log("handleInetConditionHoldEnd: no active default network - ignoring"); 3588 return; 3589 } 3590 if (mDefaultConnectionSequence != sequence) { 3591 if (DBG) log("handleInetConditionHoldEnd: event hold for obsolete network - ignoring"); 3592 return; 3593 } 3594 // TODO: Figure out why this optimization sometimes causes a 3595 // change in mDefaultInetCondition to be missed and the 3596 // UI to not be updated. 3597 //if (mDefaultInetConditionPublished == mDefaultInetCondition) { 3598 // if (DBG) log("no change in condition - aborting"); 3599 // return; 3600 //} 3601 NetworkInfo networkInfo = getNetworkInfoForType(mActiveDefaultNetwork); 3602 if (networkInfo.isConnected() == false) { 3603 if (DBG) log("handleInetConditionHoldEnd: default network not connected - ignoring"); 3604 return; 3605 } 3606 mDefaultInetConditionPublished = mDefaultInetCondition; 3607 sendInetConditionBroadcast(networkInfo); 3608 return; 3609 } 3610 3611 public ProxyInfo getProxy() { 3612 // this information is already available as a world read/writable jvm property 3613 // so this API change wouldn't have a benifit. It also breaks the passing 3614 // of proxy info to all the JVMs. 3615 // enforceAccessPermission(); 3616 synchronized (mProxyLock) { 3617 ProxyInfo ret = mGlobalProxy; 3618 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 3619 return ret; 3620 } 3621 } 3622 3623 public void setGlobalProxy(ProxyInfo proxyProperties) { 3624 enforceConnectivityInternalPermission(); 3625 3626 synchronized (mProxyLock) { 3627 if (proxyProperties == mGlobalProxy) return; 3628 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 3629 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 3630 3631 String host = ""; 3632 int port = 0; 3633 String exclList = ""; 3634 String pacFileUrl = ""; 3635 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 3636 (proxyProperties.getPacFileUrl() != null))) { 3637 if (!proxyProperties.isValid()) { 3638 if (DBG) 3639 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3640 return; 3641 } 3642 mGlobalProxy = new ProxyInfo(proxyProperties); 3643 host = mGlobalProxy.getHost(); 3644 port = mGlobalProxy.getPort(); 3645 exclList = mGlobalProxy.getExclusionListAsString(); 3646 if (proxyProperties.getPacFileUrl() != null) { 3647 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 3648 } 3649 } else { 3650 mGlobalProxy = null; 3651 } 3652 ContentResolver res = mContext.getContentResolver(); 3653 final long token = Binder.clearCallingIdentity(); 3654 try { 3655 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 3656 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 3657 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 3658 exclList); 3659 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 3660 } finally { 3661 Binder.restoreCallingIdentity(token); 3662 } 3663 } 3664 3665 if (mGlobalProxy == null) { 3666 proxyProperties = mDefaultProxy; 3667 } 3668 sendProxyBroadcast(proxyProperties); 3669 } 3670 3671 private void loadGlobalProxy() { 3672 ContentResolver res = mContext.getContentResolver(); 3673 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 3674 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 3675 String exclList = Settings.Global.getString(res, 3676 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 3677 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 3678 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 3679 ProxyInfo proxyProperties; 3680 if (!TextUtils.isEmpty(pacFileUrl)) { 3681 proxyProperties = new ProxyInfo(pacFileUrl); 3682 } else { 3683 proxyProperties = new ProxyInfo(host, port, exclList); 3684 } 3685 if (!proxyProperties.isValid()) { 3686 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3687 return; 3688 } 3689 3690 synchronized (mProxyLock) { 3691 mGlobalProxy = proxyProperties; 3692 } 3693 } 3694 } 3695 3696 public ProxyInfo getGlobalProxy() { 3697 // this information is already available as a world read/writable jvm property 3698 // so this API change wouldn't have a benifit. It also breaks the passing 3699 // of proxy info to all the JVMs. 3700 // enforceAccessPermission(); 3701 synchronized (mProxyLock) { 3702 return mGlobalProxy; 3703 } 3704 } 3705 3706 private void handleApplyDefaultProxy(ProxyInfo proxy) { 3707 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3708 && (proxy.getPacFileUrl() == null)) { 3709 proxy = null; 3710 } 3711 synchronized (mProxyLock) { 3712 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3713 if (mDefaultProxy == proxy) return; // catches repeated nulls 3714 if (proxy != null && !proxy.isValid()) { 3715 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3716 return; 3717 } 3718 3719 // This call could be coming from the PacManager, containing the port of the local 3720 // proxy. If this new proxy matches the global proxy then copy this proxy to the 3721 // global (to get the correct local port), and send a broadcast. 3722 // TODO: Switch PacManager to have its own message to send back rather than 3723 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 3724 if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null) 3725 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 3726 mGlobalProxy = proxy; 3727 sendProxyBroadcast(mGlobalProxy); 3728 return; 3729 } 3730 mDefaultProxy = proxy; 3731 3732 if (mGlobalProxy != null) return; 3733 if (!mDefaultProxyDisabled) { 3734 sendProxyBroadcast(proxy); 3735 } 3736 } 3737 } 3738 3739 private void handleDeprecatedGlobalHttpProxy() { 3740 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3741 Settings.Global.HTTP_PROXY); 3742 if (!TextUtils.isEmpty(proxy)) { 3743 String data[] = proxy.split(":"); 3744 if (data.length == 0) { 3745 return; 3746 } 3747 3748 String proxyHost = data[0]; 3749 int proxyPort = 8080; 3750 if (data.length > 1) { 3751 try { 3752 proxyPort = Integer.parseInt(data[1]); 3753 } catch (NumberFormatException e) { 3754 return; 3755 } 3756 } 3757 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 3758 setGlobalProxy(p); 3759 } 3760 } 3761 3762 private void sendProxyBroadcast(ProxyInfo proxy) { 3763 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 3764 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3765 if (DBG) log("sending Proxy Broadcast for " + proxy); 3766 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3767 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3768 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3769 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3770 final long ident = Binder.clearCallingIdentity(); 3771 try { 3772 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3773 } finally { 3774 Binder.restoreCallingIdentity(ident); 3775 } 3776 } 3777 3778 private static class SettingsObserver extends ContentObserver { 3779 private int mWhat; 3780 private Handler mHandler; 3781 SettingsObserver(Handler handler, int what) { 3782 super(handler); 3783 mHandler = handler; 3784 mWhat = what; 3785 } 3786 3787 void observe(Context context) { 3788 ContentResolver resolver = context.getContentResolver(); 3789 resolver.registerContentObserver(Settings.Global.getUriFor( 3790 Settings.Global.HTTP_PROXY), false, this); 3791 } 3792 3793 @Override 3794 public void onChange(boolean selfChange) { 3795 mHandler.obtainMessage(mWhat).sendToTarget(); 3796 } 3797 } 3798 3799 private static void log(String s) { 3800 Slog.d(TAG, s); 3801 } 3802 3803 private static void loge(String s) { 3804 Slog.e(TAG, s); 3805 } 3806 3807 int convertFeatureToNetworkType(int networkType, String feature) { 3808 int usedNetworkType = networkType; 3809 3810 if(networkType == ConnectivityManager.TYPE_MOBILE) { 3811 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 3812 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 3813 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 3814 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 3815 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 3816 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 3817 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 3818 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 3819 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 3820 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 3821 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 3822 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 3823 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 3824 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 3825 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 3826 } else { 3827 Slog.e(TAG, "Can't match any mobile netTracker!"); 3828 } 3829 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 3830 if (TextUtils.equals(feature, "p2p")) { 3831 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 3832 } else { 3833 Slog.e(TAG, "Can't match any wifi netTracker!"); 3834 } 3835 } else { 3836 Slog.e(TAG, "Unexpected network type"); 3837 } 3838 return usedNetworkType; 3839 } 3840 3841 private static <T> T checkNotNull(T value, String message) { 3842 if (value == null) { 3843 throw new NullPointerException(message); 3844 } 3845 return value; 3846 } 3847 3848 /** 3849 * Protect a socket from VPN routing rules. This method is used by 3850 * VpnBuilder and not available in ConnectivityManager. Permissions 3851 * are checked in Vpn class. 3852 * @hide 3853 */ 3854 @Override 3855 public boolean protectVpn(ParcelFileDescriptor socket) { 3856 throwIfLockdownEnabled(); 3857 try { 3858 int type = mActiveDefaultNetwork; 3859 int user = UserHandle.getUserId(Binder.getCallingUid()); 3860 if (ConnectivityManager.isNetworkTypeValid(type) && mNetTrackers[type] != null) { 3861 synchronized(mVpns) { 3862 mVpns.get(user).protect(socket); 3863 } 3864 return true; 3865 } 3866 } catch (Exception e) { 3867 // ignore 3868 } finally { 3869 try { 3870 socket.close(); 3871 } catch (Exception e) { 3872 // ignore 3873 } 3874 } 3875 return false; 3876 } 3877 3878 /** 3879 * Prepare for a VPN application. This method is used by VpnDialogs 3880 * and not available in ConnectivityManager. Permissions are checked 3881 * in Vpn class. 3882 * @hide 3883 */ 3884 @Override 3885 public boolean prepareVpn(String oldPackage, String newPackage) { 3886 throwIfLockdownEnabled(); 3887 int user = UserHandle.getUserId(Binder.getCallingUid()); 3888 synchronized(mVpns) { 3889 return mVpns.get(user).prepare(oldPackage, newPackage); 3890 } 3891 } 3892 3893 @Override 3894 public void markSocketAsUser(ParcelFileDescriptor socket, int uid) { 3895 enforceMarkNetworkSocketPermission(); 3896 final long token = Binder.clearCallingIdentity(); 3897 try { 3898 int mark = mNetd.getMarkForUid(uid); 3899 // Clear the mark on the socket if no mark is needed to prevent socket reuse issues 3900 if (mark == -1) { 3901 mark = 0; 3902 } 3903 NetworkUtils.markSocket(socket.getFd(), mark); 3904 } catch (RemoteException e) { 3905 } finally { 3906 Binder.restoreCallingIdentity(token); 3907 } 3908 } 3909 3910 /** 3911 * Configure a TUN interface and return its file descriptor. Parameters 3912 * are encoded and opaque to this class. This method is used by VpnBuilder 3913 * and not available in ConnectivityManager. Permissions are checked in 3914 * Vpn class. 3915 * @hide 3916 */ 3917 @Override 3918 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3919 throwIfLockdownEnabled(); 3920 int user = UserHandle.getUserId(Binder.getCallingUid()); 3921 synchronized(mVpns) { 3922 return mVpns.get(user).establish(config); 3923 } 3924 } 3925 3926 /** 3927 * Start legacy VPN, controlling native daemons as needed. Creates a 3928 * secondary thread to perform connection work, returning quickly. 3929 */ 3930 @Override 3931 public void startLegacyVpn(VpnProfile profile) { 3932 throwIfLockdownEnabled(); 3933 final LinkProperties egress = getActiveLinkProperties(); 3934 if (egress == null) { 3935 throw new IllegalStateException("Missing active network connection"); 3936 } 3937 int user = UserHandle.getUserId(Binder.getCallingUid()); 3938 synchronized(mVpns) { 3939 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3940 } 3941 } 3942 3943 /** 3944 * Return the information of the ongoing legacy VPN. This method is used 3945 * by VpnSettings and not available in ConnectivityManager. Permissions 3946 * are checked in Vpn class. 3947 * @hide 3948 */ 3949 @Override 3950 public LegacyVpnInfo getLegacyVpnInfo() { 3951 throwIfLockdownEnabled(); 3952 int user = UserHandle.getUserId(Binder.getCallingUid()); 3953 synchronized(mVpns) { 3954 return mVpns.get(user).getLegacyVpnInfo(); 3955 } 3956 } 3957 3958 /** 3959 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 3960 * not available in ConnectivityManager. 3961 * Permissions are checked in Vpn class. 3962 * @hide 3963 */ 3964 @Override 3965 public VpnConfig getVpnConfig() { 3966 int user = UserHandle.getUserId(Binder.getCallingUid()); 3967 synchronized(mVpns) { 3968 return mVpns.get(user).getVpnConfig(); 3969 } 3970 } 3971 3972 /** 3973 * Callback for VPN subsystem. Currently VPN is not adapted to the service 3974 * through NetworkStateTracker since it works differently. For example, it 3975 * needs to override DNS servers but never takes the default routes. It 3976 * relies on another data network, and it could keep existing connections 3977 * alive after reconnecting, switching between networks, or even resuming 3978 * from deep sleep. Calls from applications should be done synchronously 3979 * to avoid race conditions. As these are all hidden APIs, refactoring can 3980 * be done whenever a better abstraction is developed. 3981 */ 3982 public class VpnCallback { 3983 private VpnCallback() { 3984 } 3985 3986 public void onStateChanged(NetworkInfo info) { 3987 mHandler.obtainMessage(EVENT_VPN_STATE_CHANGED, info).sendToTarget(); 3988 } 3989 3990 public void override(String iface, List<String> dnsServers, List<String> searchDomains) { 3991 if (dnsServers == null) { 3992 restore(); 3993 return; 3994 } 3995 3996 // Convert DNS servers into addresses. 3997 List<InetAddress> addresses = new ArrayList<InetAddress>(); 3998 for (String address : dnsServers) { 3999 // Double check the addresses and remove invalid ones. 4000 try { 4001 addresses.add(InetAddress.parseNumericAddress(address)); 4002 } catch (Exception e) { 4003 // ignore 4004 } 4005 } 4006 if (addresses.isEmpty()) { 4007 restore(); 4008 return; 4009 } 4010 4011 // Concatenate search domains into a string. 4012 StringBuilder buffer = new StringBuilder(); 4013 if (searchDomains != null) { 4014 for (String domain : searchDomains) { 4015 buffer.append(domain).append(' '); 4016 } 4017 } 4018 String domains = buffer.toString().trim(); 4019 4020 // Apply DNS changes. 4021 synchronized (mDnsLock) { 4022 // TODO: Re-enable this when the netId of the VPN is known. 4023 // updateDnsLocked("VPN", netId, addresses, domains); 4024 } 4025 4026 // Temporarily disable the default proxy (not global). 4027 synchronized (mProxyLock) { 4028 mDefaultProxyDisabled = true; 4029 if (mGlobalProxy == null && mDefaultProxy != null) { 4030 sendProxyBroadcast(null); 4031 } 4032 } 4033 4034 // TODO: support proxy per network. 4035 } 4036 4037 public void restore() { 4038 synchronized (mProxyLock) { 4039 mDefaultProxyDisabled = false; 4040 if (mGlobalProxy == null && mDefaultProxy != null) { 4041 sendProxyBroadcast(mDefaultProxy); 4042 } 4043 } 4044 } 4045 4046 public void protect(ParcelFileDescriptor socket) { 4047 try { 4048 final int mark = mNetd.getMarkForProtect(); 4049 NetworkUtils.markSocket(socket.getFd(), mark); 4050 } catch (RemoteException e) { 4051 } 4052 } 4053 4054 public void setRoutes(String interfaze, List<RouteInfo> routes) { 4055 for (RouteInfo route : routes) { 4056 try { 4057 mNetd.setMarkedForwardingRoute(interfaze, route); 4058 } catch (RemoteException e) { 4059 } 4060 } 4061 } 4062 4063 public void setMarkedForwarding(String interfaze) { 4064 try { 4065 mNetd.setMarkedForwarding(interfaze); 4066 } catch (RemoteException e) { 4067 } 4068 } 4069 4070 public void clearMarkedForwarding(String interfaze) { 4071 try { 4072 mNetd.clearMarkedForwarding(interfaze); 4073 } catch (RemoteException e) { 4074 } 4075 } 4076 4077 public void addUserForwarding(String interfaze, int uid, boolean forwardDns) { 4078 int uidStart = uid * UserHandle.PER_USER_RANGE; 4079 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 4080 addUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 4081 } 4082 4083 public void clearUserForwarding(String interfaze, int uid, boolean forwardDns) { 4084 int uidStart = uid * UserHandle.PER_USER_RANGE; 4085 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 4086 clearUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 4087 } 4088 4089 public void addUidForwarding(String interfaze, int uidStart, int uidEnd, 4090 boolean forwardDns) { 4091 // TODO: Re-enable this when the netId of the VPN is known. 4092 // try { 4093 // mNetd.setUidRangeRoute(netId, uidStart, uidEnd, forwardDns); 4094 // } catch (RemoteException e) { 4095 // } 4096 4097 } 4098 4099 public void clearUidForwarding(String interfaze, int uidStart, int uidEnd, 4100 boolean forwardDns) { 4101 // TODO: Re-enable this when the netId of the VPN is known. 4102 // try { 4103 // mNetd.clearUidRangeRoute(interfaze, uidStart, uidEnd); 4104 // } catch (RemoteException e) { 4105 // } 4106 4107 } 4108 } 4109 4110 @Override 4111 public boolean updateLockdownVpn() { 4112 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 4113 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 4114 return false; 4115 } 4116 4117 // Tear down existing lockdown if profile was removed 4118 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 4119 if (mLockdownEnabled) { 4120 if (!mKeyStore.isUnlocked()) { 4121 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 4122 return false; 4123 } 4124 4125 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 4126 final VpnProfile profile = VpnProfile.decode( 4127 profileName, mKeyStore.get(Credentials.VPN + profileName)); 4128 int user = UserHandle.getUserId(Binder.getCallingUid()); 4129 synchronized(mVpns) { 4130 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 4131 profile)); 4132 } 4133 } else { 4134 setLockdownTracker(null); 4135 } 4136 4137 return true; 4138 } 4139 4140 /** 4141 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 4142 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 4143 */ 4144 private void setLockdownTracker(LockdownVpnTracker tracker) { 4145 // Shutdown any existing tracker 4146 final LockdownVpnTracker existing = mLockdownTracker; 4147 mLockdownTracker = null; 4148 if (existing != null) { 4149 existing.shutdown(); 4150 } 4151 4152 try { 4153 if (tracker != null) { 4154 mNetd.setFirewallEnabled(true); 4155 mNetd.setFirewallInterfaceRule("lo", true); 4156 mLockdownTracker = tracker; 4157 mLockdownTracker.init(); 4158 } else { 4159 mNetd.setFirewallEnabled(false); 4160 } 4161 } catch (RemoteException e) { 4162 // ignored; NMS lives inside system_server 4163 } 4164 } 4165 4166 private void throwIfLockdownEnabled() { 4167 if (mLockdownEnabled) { 4168 throw new IllegalStateException("Unavailable in lockdown mode"); 4169 } 4170 } 4171 4172 public void supplyMessenger(int networkType, Messenger messenger) { 4173 enforceConnectivityInternalPermission(); 4174 4175 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 4176 mNetTrackers[networkType].supplyMessenger(messenger); 4177 } 4178 } 4179 4180 public int findConnectionTypeForIface(String iface) { 4181 enforceConnectivityInternalPermission(); 4182 4183 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 4184 for (NetworkStateTracker tracker : mNetTrackers) { 4185 if (tracker != null) { 4186 LinkProperties lp = tracker.getLinkProperties(); 4187 if (lp != null && iface.equals(lp.getInterfaceName())) { 4188 return tracker.getNetworkInfo().getType(); 4189 } 4190 } 4191 } 4192 return ConnectivityManager.TYPE_NONE; 4193 } 4194 4195 /** 4196 * Have mobile data fail fast if enabled. 4197 * 4198 * @param enabled DctConstants.ENABLED/DISABLED 4199 */ 4200 private void setEnableFailFastMobileData(int enabled) { 4201 int tag; 4202 4203 if (enabled == DctConstants.ENABLED) { 4204 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 4205 } else { 4206 tag = mEnableFailFastMobileDataTag.get(); 4207 } 4208 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 4209 enabled)); 4210 } 4211 4212 private boolean isMobileDataStateTrackerReady() { 4213 MobileDataStateTracker mdst = 4214 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4215 return (mdst != null) && (mdst.isReady()); 4216 } 4217 4218 /** 4219 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 4220 */ 4221 4222 /** 4223 * No connection was possible to the network. 4224 * This is NOT a warm sim. 4225 */ 4226 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 4227 4228 /** 4229 * A connection was made to the internet, all is well. 4230 * This is NOT a warm sim. 4231 */ 4232 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 4233 4234 /** 4235 * A connection was made but no dns server was available to resolve a name to address. 4236 * This is NOT a warm sim since provisioning network is supported. 4237 */ 4238 private static final int CMP_RESULT_CODE_NO_DNS = 2; 4239 4240 /** 4241 * A connection was made but could not open a TCP connection. 4242 * This is NOT a warm sim since provisioning network is supported. 4243 */ 4244 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 4245 4246 /** 4247 * A connection was made but there was a redirection, we appear to be in walled garden. 4248 * This is an indication of a warm sim on a mobile network such as T-Mobile. 4249 */ 4250 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 4251 4252 /** 4253 * The mobile network is a provisioning network. 4254 * This is an indication of a warm sim on a mobile network such as AT&T. 4255 */ 4256 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 4257 4258 /** 4259 * The mobile network is provisioning 4260 */ 4261 private static final int CMP_RESULT_CODE_IS_PROVISIONING = 6; 4262 4263 private AtomicBoolean mIsProvisioningNetwork = new AtomicBoolean(false); 4264 private AtomicBoolean mIsStartingProvisioning = new AtomicBoolean(false); 4265 4266 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 4267 4268 @Override 4269 public int checkMobileProvisioning(int suggestedTimeOutMs) { 4270 int timeOutMs = -1; 4271 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 4272 enforceConnectivityInternalPermission(); 4273 4274 final long token = Binder.clearCallingIdentity(); 4275 try { 4276 timeOutMs = suggestedTimeOutMs; 4277 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 4278 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 4279 } 4280 4281 // Check that mobile networks are supported 4282 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 4283 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 4284 if (DBG) log("checkMobileProvisioning: X no mobile network"); 4285 return timeOutMs; 4286 } 4287 4288 // If we're already checking don't do it again 4289 // TODO: Add a queue of results... 4290 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 4291 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 4292 return timeOutMs; 4293 } 4294 4295 // Start off with mobile notification off 4296 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4297 4298 CheckMp checkMp = new CheckMp(mContext, this); 4299 CheckMp.CallBack cb = new CheckMp.CallBack() { 4300 @Override 4301 void onComplete(Integer result) { 4302 if (DBG) log("CheckMp.onComplete: result=" + result); 4303 NetworkInfo ni = 4304 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 4305 switch(result) { 4306 case CMP_RESULT_CODE_CONNECTABLE: 4307 case CMP_RESULT_CODE_NO_CONNECTION: 4308 case CMP_RESULT_CODE_NO_DNS: 4309 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 4310 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 4311 break; 4312 } 4313 case CMP_RESULT_CODE_REDIRECTED: { 4314 if (DBG) log("CheckMp.onComplete: warm sim"); 4315 String url = getMobileProvisioningUrl(); 4316 if (TextUtils.isEmpty(url)) { 4317 url = getMobileRedirectedProvisioningUrl(); 4318 } 4319 if (TextUtils.isEmpty(url) == false) { 4320 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 4321 setProvNotificationVisible(true, 4322 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4323 url); 4324 } else { 4325 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 4326 } 4327 break; 4328 } 4329 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 4330 String url = getMobileProvisioningUrl(); 4331 if (TextUtils.isEmpty(url) == false) { 4332 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 4333 setProvNotificationVisible(true, 4334 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4335 url); 4336 // Mark that we've got a provisioning network and 4337 // Disable Mobile Data until user actually starts provisioning. 4338 mIsProvisioningNetwork.set(true); 4339 MobileDataStateTracker mdst = (MobileDataStateTracker) 4340 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4341 mdst.setInternalDataEnable(false); 4342 } else { 4343 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 4344 } 4345 break; 4346 } 4347 case CMP_RESULT_CODE_IS_PROVISIONING: { 4348 // FIXME: Need to know when provisioning is done. Probably we can 4349 // check the completion status if successful we're done if we 4350 // "timedout" or still connected to provisioning APN turn off data? 4351 if (DBG) log("CheckMp.onComplete: provisioning started"); 4352 mIsStartingProvisioning.set(false); 4353 break; 4354 } 4355 default: { 4356 loge("CheckMp.onComplete: ignore unexpected result=" + result); 4357 break; 4358 } 4359 } 4360 mIsCheckingMobileProvisioning.set(false); 4361 } 4362 }; 4363 CheckMp.Params params = 4364 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 4365 if (DBG) log("checkMobileProvisioning: params=" + params); 4366 // TODO: Reenable when calls to the now defunct 4367 // MobileDataStateTracker.isProvisioningNetwork() are removed. 4368 // This code should be moved to the Telephony code. 4369 // checkMp.execute(params); 4370 } finally { 4371 Binder.restoreCallingIdentity(token); 4372 if (DBG) log("checkMobileProvisioning: X"); 4373 } 4374 return timeOutMs; 4375 } 4376 4377 static class CheckMp extends 4378 AsyncTask<CheckMp.Params, Void, Integer> { 4379 private static final String CHECKMP_TAG = "CheckMp"; 4380 4381 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 4382 private static boolean mTestingFailures; 4383 4384 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 4385 private static final int MAX_LOOPS = 4; 4386 4387 // Number of milli-seconds to complete all of the retires 4388 public static final int MAX_TIMEOUT_MS = 60000; 4389 4390 // The socket should retry only 5 seconds, the default is longer 4391 private static final int SOCKET_TIMEOUT_MS = 5000; 4392 4393 // Sleep time for network errors 4394 private static final int NET_ERROR_SLEEP_SEC = 3; 4395 4396 // Sleep time for network route establishment 4397 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 4398 4399 // Short sleep time for polling :( 4400 private static final int POLLING_SLEEP_SEC = 1; 4401 4402 private Context mContext; 4403 private ConnectivityService mCs; 4404 private TelephonyManager mTm; 4405 private Params mParams; 4406 4407 /** 4408 * Parameters for AsyncTask.execute 4409 */ 4410 static class Params { 4411 private String mUrl; 4412 private long mTimeOutMs; 4413 private CallBack mCb; 4414 4415 Params(String url, long timeOutMs, CallBack cb) { 4416 mUrl = url; 4417 mTimeOutMs = timeOutMs; 4418 mCb = cb; 4419 } 4420 4421 @Override 4422 public String toString() { 4423 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 4424 } 4425 } 4426 4427 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 4428 // issued by name or ip address, for Google its by name so when we construct 4429 // this HostnameVerifier we'll pass the original Uri and use it to verify 4430 // the host. If the host name in the original uril fails we'll test the 4431 // hostname parameter just incase things change. 4432 static class CheckMpHostnameVerifier implements HostnameVerifier { 4433 Uri mOrgUri; 4434 4435 CheckMpHostnameVerifier(Uri orgUri) { 4436 mOrgUri = orgUri; 4437 } 4438 4439 @Override 4440 public boolean verify(String hostname, SSLSession session) { 4441 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 4442 String orgUriHost = mOrgUri.getHost(); 4443 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 4444 if (DBG) { 4445 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 4446 + " orgUriHost=" + orgUriHost); 4447 } 4448 return retVal; 4449 } 4450 } 4451 4452 /** 4453 * The call back object passed in Params. onComplete will be called 4454 * on the main thread. 4455 */ 4456 abstract static class CallBack { 4457 // Called on the main thread. 4458 abstract void onComplete(Integer result); 4459 } 4460 4461 public CheckMp(Context context, ConnectivityService cs) { 4462 if (Build.IS_DEBUGGABLE) { 4463 mTestingFailures = 4464 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 4465 } else { 4466 mTestingFailures = false; 4467 } 4468 4469 mContext = context; 4470 mCs = cs; 4471 4472 // Setup access to TelephonyService we'll be using. 4473 mTm = (TelephonyManager) mContext.getSystemService( 4474 Context.TELEPHONY_SERVICE); 4475 } 4476 4477 /** 4478 * Get the default url to use for the test. 4479 */ 4480 public String getDefaultUrl() { 4481 // See http://go/clientsdns for usage approval 4482 String server = Settings.Global.getString(mContext.getContentResolver(), 4483 Settings.Global.CAPTIVE_PORTAL_SERVER); 4484 if (server == null) { 4485 server = "clients3.google.com"; 4486 } 4487 return "http://" + server + "/generate_204"; 4488 } 4489 4490 /** 4491 * Detect if its possible to connect to the http url. DNS based detection techniques 4492 * do not work at all hotspots. The best way to check is to perform a request to 4493 * a known address that fetches the data we expect. 4494 */ 4495 private synchronized Integer isMobileOk(Params params) { 4496 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 4497 Uri orgUri = Uri.parse(params.mUrl); 4498 Random rand = new Random(); 4499 mParams = params; 4500 4501 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 4502 result = CMP_RESULT_CODE_NO_CONNECTION; 4503 log("isMobileOk: X not mobile capable result=" + result); 4504 return result; 4505 } 4506 4507 if (mCs.mIsStartingProvisioning.get()) { 4508 result = CMP_RESULT_CODE_IS_PROVISIONING; 4509 log("isMobileOk: X is provisioning result=" + result); 4510 return result; 4511 } 4512 4513 // See if we've already determined we've got a provisioning connection, 4514 // if so we don't need to do anything active. 4515 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 4516 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4517 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 4518 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 4519 4520 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 4521 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4522 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 4523 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 4524 4525 if (isDefaultProvisioning || isHipriProvisioning) { 4526 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4527 log("isMobileOk: X default || hipri is provisioning result=" + result); 4528 return result; 4529 } 4530 4531 try { 4532 // Continue trying to connect until time has run out 4533 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 4534 4535 if (!mCs.isMobileDataStateTrackerReady()) { 4536 // Wait for MobileDataStateTracker to be ready. 4537 if (DBG) log("isMobileOk: mdst is not ready"); 4538 while(SystemClock.elapsedRealtime() < endTime) { 4539 if (mCs.isMobileDataStateTrackerReady()) { 4540 // Enable fail fast as we'll do retries here and use a 4541 // hipri connection so the default connection stays active. 4542 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 4543 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 4544 break; 4545 } 4546 sleep(POLLING_SLEEP_SEC); 4547 } 4548 } 4549 4550 log("isMobileOk: start hipri url=" + params.mUrl); 4551 4552 // First wait until we can start using hipri 4553 Binder binder = new Binder(); 4554 while(SystemClock.elapsedRealtime() < endTime) { 4555 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4556 Phone.FEATURE_ENABLE_HIPRI, binder); 4557 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 4558 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 4559 log("isMobileOk: hipri started"); 4560 break; 4561 } 4562 if (VDBG) log("isMobileOk: hipri not started yet"); 4563 result = CMP_RESULT_CODE_NO_CONNECTION; 4564 sleep(POLLING_SLEEP_SEC); 4565 } 4566 4567 // Continue trying to connect until time has run out 4568 while(SystemClock.elapsedRealtime() < endTime) { 4569 try { 4570 // Wait for hipri to connect. 4571 // TODO: Don't poll and handle situation where hipri fails 4572 // because default is retrying. See b/9569540 4573 NetworkInfo.State state = mCs 4574 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4575 if (state != NetworkInfo.State.CONNECTED) { 4576 if (true/*VDBG*/) { 4577 log("isMobileOk: not connected ni=" + 4578 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4579 } 4580 sleep(POLLING_SLEEP_SEC); 4581 result = CMP_RESULT_CODE_NO_CONNECTION; 4582 continue; 4583 } 4584 4585 // Hipri has started check if this is a provisioning url 4586 MobileDataStateTracker mdst = (MobileDataStateTracker) 4587 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4588 if (mdst.isProvisioningNetwork()) { 4589 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4590 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 4591 return result; 4592 } else { 4593 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 4594 } 4595 4596 // Get of the addresses associated with the url host. We need to use the 4597 // address otherwise HttpURLConnection object will use the name to get 4598 // the addresses and will try every address but that will bypass the 4599 // route to host we setup and the connection could succeed as the default 4600 // interface might be connected to the internet via wifi or other interface. 4601 InetAddress[] addresses; 4602 try { 4603 addresses = InetAddress.getAllByName(orgUri.getHost()); 4604 } catch (UnknownHostException e) { 4605 result = CMP_RESULT_CODE_NO_DNS; 4606 log("isMobileOk: X UnknownHostException result=" + result); 4607 return result; 4608 } 4609 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 4610 4611 // Get the type of addresses supported by this link 4612 LinkProperties lp = mCs.getLinkPropertiesForTypeInternal( 4613 ConnectivityManager.TYPE_MOBILE_HIPRI); 4614 boolean linkHasIpv4 = lp.hasIPv4Address(); 4615 boolean linkHasIpv6 = lp.hasIPv6Address(); 4616 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 4617 + " linkHasIpv6=" + linkHasIpv6); 4618 4619 final ArrayList<InetAddress> validAddresses = 4620 new ArrayList<InetAddress>(addresses.length); 4621 4622 for (InetAddress addr : addresses) { 4623 if (((addr instanceof Inet4Address) && linkHasIpv4) || 4624 ((addr instanceof Inet6Address) && linkHasIpv6)) { 4625 validAddresses.add(addr); 4626 } 4627 } 4628 4629 if (validAddresses.size() == 0) { 4630 return CMP_RESULT_CODE_NO_CONNECTION; 4631 } 4632 4633 int addrTried = 0; 4634 while (true) { 4635 // Loop through at most MAX_LOOPS valid addresses or until 4636 // we run out of time 4637 if (addrTried++ >= MAX_LOOPS) { 4638 log("isMobileOk: too many loops tried - giving up"); 4639 break; 4640 } 4641 if (SystemClock.elapsedRealtime() >= endTime) { 4642 log("isMobileOk: spend too much time - giving up"); 4643 break; 4644 } 4645 4646 InetAddress hostAddr = validAddresses.get(rand.nextInt( 4647 validAddresses.size())); 4648 4649 // Make a route to host so we check the specific interface. 4650 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 4651 hostAddr.getAddress(), null)) { 4652 // Wait a short time to be sure the route is established ?? 4653 log("isMobileOk:" 4654 + " wait to establish route to hostAddr=" + hostAddr); 4655 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 4656 } else { 4657 log("isMobileOk:" 4658 + " could not establish route to hostAddr=" + hostAddr); 4659 // Wait a short time before the next attempt 4660 sleep(NET_ERROR_SLEEP_SEC); 4661 continue; 4662 } 4663 4664 // Rewrite the url to have numeric address to use the specific route 4665 // using http for half the attempts and https for the other half. 4666 // Doing https first and http second as on a redirected walled garden 4667 // such as t-mobile uses we get a SocketTimeoutException: "SSL 4668 // handshake timed out" which we declare as 4669 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 4670 // having http second we will be using logic used for some time. 4671 URL newUrl; 4672 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 4673 newUrl = new URL(scheme, hostAddr.getHostAddress(), 4674 orgUri.getPath()); 4675 log("isMobileOk: newUrl=" + newUrl); 4676 4677 HttpURLConnection urlConn = null; 4678 try { 4679 // Open the connection set the request headers and get the response 4680 urlConn = (HttpURLConnection)newUrl.openConnection( 4681 java.net.Proxy.NO_PROXY); 4682 if (scheme.equals("https")) { 4683 ((HttpsURLConnection)urlConn).setHostnameVerifier( 4684 new CheckMpHostnameVerifier(orgUri)); 4685 } 4686 urlConn.setInstanceFollowRedirects(false); 4687 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 4688 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 4689 urlConn.setUseCaches(false); 4690 urlConn.setAllowUserInteraction(false); 4691 // Set the "Connection" to "Close" as by default "Keep-Alive" 4692 // is used which is useless in this case. 4693 urlConn.setRequestProperty("Connection", "close"); 4694 int responseCode = urlConn.getResponseCode(); 4695 4696 // For debug display the headers 4697 Map<String, List<String>> headers = urlConn.getHeaderFields(); 4698 log("isMobileOk: headers=" + headers); 4699 4700 // Close the connection 4701 urlConn.disconnect(); 4702 urlConn = null; 4703 4704 if (mTestingFailures) { 4705 // Pretend no connection, this tests using http and https 4706 result = CMP_RESULT_CODE_NO_CONNECTION; 4707 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 4708 continue; 4709 } 4710 4711 if (responseCode == 204) { 4712 // Return 4713 result = CMP_RESULT_CODE_CONNECTABLE; 4714 log("isMobileOk: X got expected responseCode=" + responseCode 4715 + " result=" + result); 4716 return result; 4717 } else { 4718 // Retry to be sure this was redirected, we've gotten 4719 // occasions where a server returned 200 even though 4720 // the device didn't have a "warm" sim. 4721 log("isMobileOk: not expected responseCode=" + responseCode); 4722 // TODO - it would be nice in the single-address case to do 4723 // another DNS resolve here, but flushing the cache is a bit 4724 // heavy-handed. 4725 result = CMP_RESULT_CODE_REDIRECTED; 4726 } 4727 } catch (Exception e) { 4728 log("isMobileOk: HttpURLConnection Exception" + e); 4729 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 4730 if (urlConn != null) { 4731 urlConn.disconnect(); 4732 urlConn = null; 4733 } 4734 sleep(NET_ERROR_SLEEP_SEC); 4735 continue; 4736 } 4737 } 4738 log("isMobileOk: X loops|timed out result=" + result); 4739 return result; 4740 } catch (Exception e) { 4741 log("isMobileOk: Exception e=" + e); 4742 continue; 4743 } 4744 } 4745 log("isMobileOk: timed out"); 4746 } finally { 4747 log("isMobileOk: F stop hipri"); 4748 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 4749 mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4750 Phone.FEATURE_ENABLE_HIPRI); 4751 4752 // Wait for hipri to disconnect. 4753 long endTime = SystemClock.elapsedRealtime() + 5000; 4754 4755 while(SystemClock.elapsedRealtime() < endTime) { 4756 NetworkInfo.State state = mCs 4757 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4758 if (state != NetworkInfo.State.DISCONNECTED) { 4759 if (VDBG) { 4760 log("isMobileOk: connected ni=" + 4761 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4762 } 4763 sleep(POLLING_SLEEP_SEC); 4764 continue; 4765 } 4766 } 4767 4768 log("isMobileOk: X result=" + result); 4769 } 4770 return result; 4771 } 4772 4773 @Override 4774 protected Integer doInBackground(Params... params) { 4775 return isMobileOk(params[0]); 4776 } 4777 4778 @Override 4779 protected void onPostExecute(Integer result) { 4780 log("onPostExecute: result=" + result); 4781 if ((mParams != null) && (mParams.mCb != null)) { 4782 mParams.mCb.onComplete(result); 4783 } 4784 } 4785 4786 private String inetAddressesToString(InetAddress[] addresses) { 4787 StringBuffer sb = new StringBuffer(); 4788 boolean firstTime = true; 4789 for(InetAddress addr : addresses) { 4790 if (firstTime) { 4791 firstTime = false; 4792 } else { 4793 sb.append(","); 4794 } 4795 sb.append(addr); 4796 } 4797 return sb.toString(); 4798 } 4799 4800 private void printNetworkInfo() { 4801 boolean hasIccCard = mTm.hasIccCard(); 4802 int simState = mTm.getSimState(); 4803 log("hasIccCard=" + hasIccCard 4804 + " simState=" + simState); 4805 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 4806 if (ni != null) { 4807 log("ni.length=" + ni.length); 4808 for (NetworkInfo netInfo: ni) { 4809 log("netInfo=" + netInfo.toString()); 4810 } 4811 } else { 4812 log("no network info ni=null"); 4813 } 4814 } 4815 4816 /** 4817 * Sleep for a few seconds then return. 4818 * @param seconds 4819 */ 4820 private static void sleep(int seconds) { 4821 long stopTime = System.nanoTime() + (seconds * 1000000000); 4822 long sleepTime; 4823 while ((sleepTime = stopTime - System.nanoTime()) > 0) { 4824 try { 4825 Thread.sleep(sleepTime / 1000000); 4826 } catch (InterruptedException ignored) { 4827 } 4828 } 4829 } 4830 4831 private static void log(String s) { 4832 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 4833 } 4834 } 4835 4836 // TODO: Move to ConnectivityManager and make public? 4837 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 4838 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 4839 4840 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 4841 @Override 4842 public void onReceive(Context context, Intent intent) { 4843 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 4844 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 4845 } 4846 } 4847 }; 4848 4849 private void handleMobileProvisioningAction(String url) { 4850 // Mark notification as not visible 4851 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4852 4853 // If provisioning network handle as a special case, 4854 // otherwise launch browser with the intent directly. 4855 if (mIsProvisioningNetwork.get()) { 4856 if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch"); 4857// mIsStartingProvisioning.set(true); 4858// MobileDataStateTracker mdst = (MobileDataStateTracker) 4859// mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4860// mdst.setEnableFailFastMobileData(DctConstants.ENABLED); 4861// mdst.enableMobileProvisioning(url); 4862 } else { 4863 if (DBG) log("handleMobileProvisioningAction: not prov network"); 4864 // Check for apps that can handle provisioning first 4865 Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP); 4866 provisioningIntent.addCategory(TelephonyIntents.CATEGORY_MCCMNC_PREFIX 4867 + mTelephonyManager.getSimOperator()); 4868 if (mContext.getPackageManager().resolveActivity(provisioningIntent, 0 /* flags */) 4869 != null) { 4870 provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4871 Intent.FLAG_ACTIVITY_NEW_TASK); 4872 mContext.startActivity(provisioningIntent); 4873 } else { 4874 // If no apps exist, use standard URL ACTION_VIEW method 4875 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 4876 Intent.CATEGORY_APP_BROWSER); 4877 newIntent.setData(Uri.parse(url)); 4878 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4879 Intent.FLAG_ACTIVITY_NEW_TASK); 4880 try { 4881 mContext.startActivity(newIntent); 4882 } catch (ActivityNotFoundException e) { 4883 loge("handleMobileProvisioningAction: startActivity failed" + e); 4884 } 4885 } 4886 } 4887 } 4888 4889 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 4890 private volatile boolean mIsNotificationVisible = false; 4891 4892 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 4893 String url) { 4894 if (DBG) { 4895 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 4896 + " extraInfo=" + extraInfo + " url=" + url); 4897 } 4898 4899 Resources r = Resources.getSystem(); 4900 NotificationManager notificationManager = (NotificationManager) mContext 4901 .getSystemService(Context.NOTIFICATION_SERVICE); 4902 4903 if (visible) { 4904 CharSequence title; 4905 CharSequence details; 4906 int icon; 4907 Intent intent; 4908 Notification notification = new Notification(); 4909 switch (networkType) { 4910 case ConnectivityManager.TYPE_WIFI: 4911 title = r.getString(R.string.wifi_available_sign_in, 0); 4912 details = r.getString(R.string.network_available_sign_in_detailed, 4913 extraInfo); 4914 icon = R.drawable.stat_notify_wifi_in_range; 4915 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4916 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4917 Intent.FLAG_ACTIVITY_NEW_TASK); 4918 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4919 break; 4920 case ConnectivityManager.TYPE_MOBILE: 4921 case ConnectivityManager.TYPE_MOBILE_HIPRI: 4922 title = r.getString(R.string.network_available_sign_in, 0); 4923 // TODO: Change this to pull from NetworkInfo once a printable 4924 // name has been added to it 4925 details = mTelephonyManager.getNetworkOperatorName(); 4926 icon = R.drawable.stat_notify_rssi_in_range; 4927 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 4928 intent.putExtra("EXTRA_URL", url); 4929 intent.setFlags(0); 4930 notification.contentIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 4931 break; 4932 default: 4933 title = r.getString(R.string.network_available_sign_in, 0); 4934 details = r.getString(R.string.network_available_sign_in_detailed, 4935 extraInfo); 4936 icon = R.drawable.stat_notify_rssi_in_range; 4937 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4938 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4939 Intent.FLAG_ACTIVITY_NEW_TASK); 4940 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4941 break; 4942 } 4943 4944 notification.when = 0; 4945 notification.icon = icon; 4946 notification.flags = Notification.FLAG_AUTO_CANCEL; 4947 notification.tickerText = title; 4948 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 4949 4950 try { 4951 notificationManager.notify(NOTIFICATION_ID, networkType, notification); 4952 } catch (NullPointerException npe) { 4953 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 4954 npe.printStackTrace(); 4955 } 4956 } else { 4957 try { 4958 notificationManager.cancel(NOTIFICATION_ID, networkType); 4959 } catch (NullPointerException npe) { 4960 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 4961 npe.printStackTrace(); 4962 } 4963 } 4964 mIsNotificationVisible = visible; 4965 } 4966 4967 /** Location to an updatable file listing carrier provisioning urls. 4968 * An example: 4969 * 4970 * <?xml version="1.0" encoding="utf-8"?> 4971 * <provisioningUrls> 4972 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 4973 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 4974 * </provisioningUrls> 4975 */ 4976 private static final String PROVISIONING_URL_PATH = 4977 "/data/misc/radio/provisioning_urls.xml"; 4978 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 4979 4980 /** XML tag for root element. */ 4981 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 4982 /** XML tag for individual url */ 4983 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 4984 /** XML tag for redirected url */ 4985 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 4986 /** XML attribute for mcc */ 4987 private static final String ATTR_MCC = "mcc"; 4988 /** XML attribute for mnc */ 4989 private static final String ATTR_MNC = "mnc"; 4990 4991 private static final int REDIRECTED_PROVISIONING = 1; 4992 private static final int PROVISIONING = 2; 4993 4994 private String getProvisioningUrlBaseFromFile(int type) { 4995 FileReader fileReader = null; 4996 XmlPullParser parser = null; 4997 Configuration config = mContext.getResources().getConfiguration(); 4998 String tagType; 4999 5000 switch (type) { 5001 case PROVISIONING: 5002 tagType = TAG_PROVISIONING_URL; 5003 break; 5004 case REDIRECTED_PROVISIONING: 5005 tagType = TAG_REDIRECTED_URL; 5006 break; 5007 default: 5008 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 5009 type); 5010 } 5011 5012 try { 5013 fileReader = new FileReader(mProvisioningUrlFile); 5014 parser = Xml.newPullParser(); 5015 parser.setInput(fileReader); 5016 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 5017 5018 while (true) { 5019 XmlUtils.nextElement(parser); 5020 5021 String element = parser.getName(); 5022 if (element == null) break; 5023 5024 if (element.equals(tagType)) { 5025 String mcc = parser.getAttributeValue(null, ATTR_MCC); 5026 try { 5027 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 5028 String mnc = parser.getAttributeValue(null, ATTR_MNC); 5029 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 5030 parser.next(); 5031 if (parser.getEventType() == XmlPullParser.TEXT) { 5032 return parser.getText(); 5033 } 5034 } 5035 } 5036 } catch (NumberFormatException e) { 5037 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 5038 } 5039 } 5040 } 5041 return null; 5042 } catch (FileNotFoundException e) { 5043 loge("Carrier Provisioning Urls file not found"); 5044 } catch (XmlPullParserException e) { 5045 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 5046 } catch (IOException e) { 5047 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 5048 } finally { 5049 if (fileReader != null) { 5050 try { 5051 fileReader.close(); 5052 } catch (IOException e) {} 5053 } 5054 } 5055 return null; 5056 } 5057 5058 @Override 5059 public String getMobileRedirectedProvisioningUrl() { 5060 enforceConnectivityInternalPermission(); 5061 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 5062 if (TextUtils.isEmpty(url)) { 5063 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 5064 } 5065 return url; 5066 } 5067 5068 @Override 5069 public String getMobileProvisioningUrl() { 5070 enforceConnectivityInternalPermission(); 5071 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 5072 if (TextUtils.isEmpty(url)) { 5073 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 5074 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 5075 } else { 5076 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 5077 } 5078 // populate the iccid, imei and phone number in the provisioning url. 5079 if (!TextUtils.isEmpty(url)) { 5080 String phoneNumber = mTelephonyManager.getLine1Number(); 5081 if (TextUtils.isEmpty(phoneNumber)) { 5082 phoneNumber = "0000000000"; 5083 } 5084 url = String.format(url, 5085 mTelephonyManager.getSimSerialNumber() /* ICCID */, 5086 mTelephonyManager.getDeviceId() /* IMEI */, 5087 phoneNumber /* Phone numer */); 5088 } 5089 5090 return url; 5091 } 5092 5093 @Override 5094 public void setProvisioningNotificationVisible(boolean visible, int networkType, 5095 String extraInfo, String url) { 5096 enforceConnectivityInternalPermission(); 5097 setProvNotificationVisible(visible, networkType, extraInfo, url); 5098 } 5099 5100 @Override 5101 public void setAirplaneMode(boolean enable) { 5102 enforceConnectivityInternalPermission(); 5103 final long ident = Binder.clearCallingIdentity(); 5104 try { 5105 final ContentResolver cr = mContext.getContentResolver(); 5106 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 5107 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 5108 intent.putExtra("state", enable); 5109 mContext.sendBroadcast(intent); 5110 } finally { 5111 Binder.restoreCallingIdentity(ident); 5112 } 5113 } 5114 5115 private void onUserStart(int userId) { 5116 synchronized(mVpns) { 5117 Vpn userVpn = mVpns.get(userId); 5118 if (userVpn != null) { 5119 loge("Starting user already has a VPN"); 5120 return; 5121 } 5122 userVpn = new Vpn(mContext, mVpnCallback, mNetd, this, userId); 5123 mVpns.put(userId, userVpn); 5124 userVpn.startMonitoring(mContext, mTrackerHandler); 5125 } 5126 } 5127 5128 private void onUserStop(int userId) { 5129 synchronized(mVpns) { 5130 Vpn userVpn = mVpns.get(userId); 5131 if (userVpn == null) { 5132 loge("Stopping user has no VPN"); 5133 return; 5134 } 5135 mVpns.delete(userId); 5136 } 5137 } 5138 5139 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 5140 @Override 5141 public void onReceive(Context context, Intent intent) { 5142 final String action = intent.getAction(); 5143 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 5144 if (userId == UserHandle.USER_NULL) return; 5145 5146 if (Intent.ACTION_USER_STARTING.equals(action)) { 5147 onUserStart(userId); 5148 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 5149 onUserStop(userId); 5150 } 5151 } 5152 }; 5153 5154 @Override 5155 public LinkQualityInfo getLinkQualityInfo(int networkType) { 5156 enforceAccessPermission(); 5157 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 5158 return mNetTrackers[networkType].getLinkQualityInfo(); 5159 } else { 5160 return null; 5161 } 5162 } 5163 5164 @Override 5165 public LinkQualityInfo getActiveLinkQualityInfo() { 5166 enforceAccessPermission(); 5167 if (isNetworkTypeValid(mActiveDefaultNetwork) && 5168 mNetTrackers[mActiveDefaultNetwork] != null) { 5169 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 5170 } else { 5171 return null; 5172 } 5173 } 5174 5175 @Override 5176 public LinkQualityInfo[] getAllLinkQualityInfo() { 5177 enforceAccessPermission(); 5178 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 5179 for (NetworkStateTracker tracker : mNetTrackers) { 5180 if (tracker != null) { 5181 LinkQualityInfo li = tracker.getLinkQualityInfo(); 5182 if (li != null) { 5183 result.add(li); 5184 } 5185 } 5186 } 5187 5188 return result.toArray(new LinkQualityInfo[result.size()]); 5189 } 5190 5191 /* Infrastructure for network sampling */ 5192 5193 private void handleNetworkSamplingTimeout() { 5194 5195 log("Sampling interval elapsed, updating statistics .."); 5196 5197 // initialize list of interfaces .. 5198 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 5199 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 5200 for (NetworkStateTracker tracker : mNetTrackers) { 5201 if (tracker != null) { 5202 String ifaceName = tracker.getNetworkInterfaceName(); 5203 if (ifaceName != null) { 5204 mapIfaceToSample.put(ifaceName, null); 5205 } 5206 } 5207 } 5208 5209 // Read samples for all interfaces 5210 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 5211 5212 // process samples for all networks 5213 for (NetworkStateTracker tracker : mNetTrackers) { 5214 if (tracker != null) { 5215 String ifaceName = tracker.getNetworkInterfaceName(); 5216 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 5217 if (ss != null) { 5218 // end the previous sampling cycle 5219 tracker.stopSampling(ss); 5220 // start a new sampling cycle .. 5221 tracker.startSampling(ss); 5222 } 5223 } 5224 } 5225 5226 log("Done."); 5227 5228 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 5229 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 5230 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 5231 5232 if (DBG) log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 5233 5234 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 5235 } 5236 5237 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 5238 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 5239 mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, wakeupTime, intent); 5240 } 5241 5242 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 5243 new HashMap<Messenger, NetworkFactoryInfo>(); 5244 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 5245 new HashMap<NetworkRequest, NetworkRequestInfo>(); 5246 5247 private static class NetworkFactoryInfo { 5248 public final String name; 5249 public final Messenger messenger; 5250 public final AsyncChannel asyncChannel; 5251 5252 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 5253 this.name = name; 5254 this.messenger = messenger; 5255 this.asyncChannel = asyncChannel; 5256 } 5257 } 5258 5259 private class NetworkRequestInfo implements IBinder.DeathRecipient { 5260 static final boolean REQUEST = true; 5261 static final boolean LISTEN = false; 5262 5263 final NetworkRequest request; 5264 IBinder mBinder; 5265 final int mPid; 5266 final int mUid; 5267 final Messenger messenger; 5268 final boolean isRequest; 5269 5270 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 5271 super(); 5272 messenger = m; 5273 request = r; 5274 mBinder = binder; 5275 mPid = getCallingPid(); 5276 mUid = getCallingUid(); 5277 this.isRequest = isRequest; 5278 5279 try { 5280 mBinder.linkToDeath(this, 0); 5281 } catch (RemoteException e) { 5282 binderDied(); 5283 } 5284 } 5285 5286 void unlinkDeathRecipient() { 5287 mBinder.unlinkToDeath(this, 0); 5288 } 5289 5290 public void binderDied() { 5291 log("ConnectivityService NetworkRequestInfo binderDied(" + 5292 request + ", " + mBinder + ")"); 5293 releaseNetworkRequest(request); 5294 } 5295 5296 public String toString() { 5297 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 5298 mPid + " for " + request; 5299 } 5300 } 5301 5302 @Override 5303 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 5304 Messenger messenger, int timeoutSec, IBinder binder) { 5305 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 5306 == false) { 5307 enforceConnectivityInternalPermission(); 5308 } else { 5309 enforceChangePermission(); 5310 } 5311 5312 if (timeoutSec < 0 || timeoutSec > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_SEC) { 5313 throw new IllegalArgumentException("Bad timeout specified"); 5314 } 5315 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 5316 networkCapabilities), false, nextNetworkRequestId()); 5317 if (DBG) log("requestNetwork for " + networkRequest); 5318 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 5319 NetworkRequestInfo.REQUEST); 5320 5321 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 5322 if (timeoutSec > 0) { 5323 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 5324 nri), timeoutSec * 1000); 5325 } 5326 return networkRequest; 5327 } 5328 5329 @Override 5330 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 5331 PendingIntent operation) { 5332 // TODO 5333 return null; 5334 } 5335 5336 @Override 5337 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 5338 Messenger messenger, IBinder binder) { 5339 enforceAccessPermission(); 5340 5341 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 5342 networkCapabilities), false, nextNetworkRequestId()); 5343 if (DBG) log("listenForNetwork for " + networkRequest); 5344 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 5345 NetworkRequestInfo.LISTEN); 5346 5347 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 5348 return networkRequest; 5349 } 5350 5351 @Override 5352 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 5353 PendingIntent operation) { 5354 } 5355 5356 @Override 5357 public void releaseNetworkRequest(NetworkRequest networkRequest) { 5358 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, 5359 networkRequest)); 5360 } 5361 5362 @Override 5363 public void registerNetworkFactory(Messenger messenger, String name) { 5364 enforceConnectivityInternalPermission(); 5365 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 5366 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 5367 } 5368 5369 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 5370 if (VDBG) log("Got NetworkFactory Messenger for " + nfi.name); 5371 mNetworkFactoryInfos.put(nfi.messenger, nfi); 5372 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 5373 } 5374 5375 @Override 5376 public void unregisterNetworkFactory(Messenger messenger) { 5377 enforceConnectivityInternalPermission(); 5378 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 5379 } 5380 5381 private void handleUnregisterNetworkFactory(Messenger messenger) { 5382 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 5383 if (nfi == null) { 5384 if (VDBG) log("Failed to find Messenger in unregisterNetworkFactory"); 5385 return; 5386 } 5387 if (VDBG) log("unregisterNetworkFactory for " + nfi.name); 5388 } 5389 5390 /** 5391 * NetworkAgentInfo supporting a request by requestId. 5392 * These have already been vetted (their Capabilities satisfy the request) 5393 * and the are the highest scored network available. 5394 * the are keyed off the Requests requestId. 5395 */ 5396 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 5397 new SparseArray<NetworkAgentInfo>(); 5398 5399 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 5400 new SparseArray<NetworkAgentInfo>(); 5401 5402 // NetworkAgentInfo keyed off its connecting messenger 5403 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 5404 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 5405 new HashMap<Messenger, NetworkAgentInfo>(); 5406 5407 private final NetworkRequest mDefaultRequest; 5408 5409 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 5410 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 5411 int currentScore) { 5412 enforceConnectivityInternalPermission(); 5413 5414 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), nextNetId(), 5415 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 5416 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler); 5417 5418 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 5419 } 5420 5421 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 5422 if (VDBG) log("Got NetworkAgent Messenger"); 5423 mNetworkAgentInfos.put(na.messenger, na); 5424 try { 5425 mNetworkAgentInfoForType[na.networkInfo.getType()].add(na); 5426 } catch (NullPointerException e) { 5427 loge("registered NetworkAgent for unsupported type: " + na); 5428 } 5429 mNetworkForNetId.put(na.network.netId, na); 5430 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 5431 NetworkInfo networkInfo = na.networkInfo; 5432 na.networkInfo = null; 5433 updateNetworkInfo(na, networkInfo); 5434 } 5435 5436 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 5437 LinkProperties newLp = networkAgent.linkProperties; 5438 int netId = networkAgent.network.netId; 5439 5440 updateInterfaces(newLp, oldLp, netId); 5441 updateMtu(newLp, oldLp); 5442 // TODO - figure out what to do for clat 5443// for (LinkProperties lp : newLp.getStackedLinks()) { 5444// updateMtu(lp, null); 5445// } 5446 updateRoutes(newLp, oldLp, netId); 5447 updateDnses(newLp, oldLp, netId); 5448 updateClat(newLp, oldLp, networkAgent); 5449 } 5450 5451 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo na) { 5452 // Update 464xlat state. 5453 if (mClat.requiresClat(na)) { 5454 5455 // If the connection was previously using clat, but is not using it now, stop the clat 5456 // daemon. Normally, this happens automatically when the connection disconnects, but if 5457 // the disconnect is not reported, or if the connection's LinkProperties changed for 5458 // some other reason (e.g., handoff changes the IP addresses on the link), it would 5459 // still be running. If it's not running, then stopping it is a no-op. 5460 if (Nat464Xlat.isRunningClat(oldLp) && !Nat464Xlat.isRunningClat(newLp)) { 5461 mClat.stopClat(); 5462 } 5463 // If the link requires clat to be running, then start the daemon now. 5464 if (newLp != null && na.networkInfo.isConnected()) { 5465 mClat.startClat(na); 5466 } else { 5467 mClat.stopClat(); 5468 } 5469 } 5470 } 5471 5472 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 5473 CompareResult<String> interfaceDiff = new CompareResult<String>(); 5474 if (oldLp != null) { 5475 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 5476 } else if (newLp != null) { 5477 interfaceDiff.added = newLp.getAllInterfaceNames(); 5478 } 5479 for (String iface : interfaceDiff.added) { 5480 try { 5481 mNetd.addInterfaceToNetwork(iface, netId); 5482 } catch (Exception e) { 5483 loge("Exception adding interface: " + e); 5484 } 5485 } 5486 for (String iface : interfaceDiff.removed) { 5487 try { 5488 mNetd.removeInterfaceFromNetwork(iface, netId); 5489 } catch (Exception e) { 5490 loge("Exception removing interface: " + e); 5491 } 5492 } 5493 } 5494 5495 private void updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 5496 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 5497 if (oldLp != null) { 5498 routeDiff = oldLp.compareAllRoutes(newLp); 5499 } else if (newLp != null) { 5500 routeDiff.added = newLp.getAllRoutes(); 5501 } 5502 5503 // add routes before removing old in case it helps with continuous connectivity 5504 5505 // do this twice, adding non-nexthop routes first, then routes they are dependent on 5506 for (RouteInfo route : routeDiff.added) { 5507 if (route.hasGateway()) continue; 5508 try { 5509 mNetd.addRoute(netId, route); 5510 } catch (Exception e) { 5511 loge("Exception in addRoute for non-gateway: " + e); 5512 } 5513 } 5514 for (RouteInfo route : routeDiff.added) { 5515 if (route.hasGateway() == false) continue; 5516 try { 5517 mNetd.addRoute(netId, route); 5518 } catch (Exception e) { 5519 loge("Exception in addRoute for gateway: " + e); 5520 } 5521 } 5522 5523 for (RouteInfo route : routeDiff.removed) { 5524 try { 5525 mNetd.removeRoute(netId, route); 5526 } catch (Exception e) { 5527 loge("Exception in removeRoute: " + e); 5528 } 5529 } 5530 } 5531 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId) { 5532 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 5533 Collection<InetAddress> dnses = newLp.getDnses(); 5534 if (dnses.size() == 0 && mDefaultDns != null) { 5535 dnses = new ArrayList(); 5536 dnses.add(mDefaultDns); 5537 if (DBG) { 5538 loge("no dns provided for netId " + netId + ", so using defaults"); 5539 } 5540 } 5541 try { 5542 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 5543 newLp.getDomains()); 5544 } catch (Exception e) { 5545 loge("Exception in setDnsServersForNetwork: " + e); 5546 } 5547 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 5548 if (defaultNai != null && defaultNai.network.netId == netId) { 5549 setDefaultDnsSystemProperties(dnses); 5550 } 5551 } 5552 } 5553 5554 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 5555 int last = 0; 5556 for (InetAddress dns : dnses) { 5557 ++last; 5558 String key = "net.dns" + last; 5559 String value = dns.getHostAddress(); 5560 SystemProperties.set(key, value); 5561 } 5562 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 5563 String key = "net.dns" + i; 5564 SystemProperties.set(key, ""); 5565 } 5566 mNumDnsEntries = last; 5567 } 5568 5569 5570 private void updateCapabilities(NetworkAgentInfo networkAgent, 5571 NetworkCapabilities networkCapabilities) { 5572 // TODO - what else here? Verify still satisfies everybody? 5573 // Check if satisfies somebody new? call callbacks? 5574 networkAgent.networkCapabilities = networkCapabilities; 5575 } 5576 5577 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 5578 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 5579 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 5580 nfi.asyncChannel.sendMessage(NetworkFactoryProtocol.CMD_REQUEST_NETWORK, score, 0, networkRequest); 5581 } 5582 } 5583 5584 private void callCallbackForRequest(NetworkRequestInfo nri, 5585 NetworkAgentInfo networkAgent, int notificationType) { 5586 if (nri.messenger == null) return; // Default request has no msgr 5587 Object o; 5588 int a1 = 0; 5589 int a2 = 0; 5590 switch (notificationType) { 5591 case ConnectivityManager.CALLBACK_LOSING: 5592 a1 = 30; // TODO - read this from NetworkMonitor 5593 // fall through 5594 case ConnectivityManager.CALLBACK_PRECHECK: 5595 case ConnectivityManager.CALLBACK_AVAILABLE: 5596 case ConnectivityManager.CALLBACK_LOST: 5597 case ConnectivityManager.CALLBACK_CAP_CHANGED: 5598 case ConnectivityManager.CALLBACK_IP_CHANGED: { 5599 o = new NetworkRequest(nri.request); 5600 a2 = networkAgent.network.netId; 5601 break; 5602 } 5603 case ConnectivityManager.CALLBACK_UNAVAIL: 5604 case ConnectivityManager.CALLBACK_RELEASED: { 5605 o = new NetworkRequest(nri.request); 5606 break; 5607 } 5608 default: { 5609 loge("Unknown notificationType " + notificationType); 5610 return; 5611 } 5612 } 5613 Message msg = Message.obtain(); 5614 msg.arg1 = a1; 5615 msg.arg2 = a2; 5616 msg.obj = o; 5617 msg.what = notificationType; 5618 try { 5619 if (VDBG) log("sending notification " + notificationType + " for " + nri.request); 5620 nri.messenger.send(msg); 5621 } catch (RemoteException e) { 5622 // may occur naturally in the race of binder death. 5623 loge("RemoteException caught trying to send a callback msg for " + nri.request); 5624 } 5625 } 5626 5627 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 5628 if (oldNetwork == null) { 5629 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 5630 return; 5631 } 5632 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 5633 if (DBG) { 5634 if (oldNetwork.networkRequests.size() != 0) { 5635 loge("Dead network still had " + oldNetwork.networkRequests.size() + " requests"); 5636 } 5637 } 5638 oldNetwork.asyncChannel.disconnect(); 5639 } 5640 5641 private void handleConnectionValidated(NetworkAgentInfo newNetwork) { 5642 if (newNetwork == null) { 5643 loge("Unknown NetworkAgentInfo in handleConnectionValidated"); 5644 return; 5645 } 5646 boolean keep = false; 5647 boolean isNewDefault = false; 5648 if (DBG) log("handleConnectionValidated for "+newNetwork.name()); 5649 // check if any NetworkRequest wants this NetworkAgent 5650 // first check if it satisfies the NetworkCapabilities 5651 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 5652 if (VDBG) log(" new Network has: " + newNetwork.networkCapabilities); 5653 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 5654 if (VDBG) log(" checking if request is satisfied: " + nri.request); 5655 if (nri.request.networkCapabilities.satisfiedByNetworkCapabilities( 5656 newNetwork.networkCapabilities)) { 5657 // next check if it's better than any current network we're using for 5658 // this request 5659 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 5660 if (VDBG) { 5661 log("currentScore = " + 5662 (currentNetwork != null ? currentNetwork.currentScore : 0) + 5663 ", newScore = " + newNetwork.currentScore); 5664 } 5665 if (currentNetwork == null || 5666 currentNetwork.currentScore < newNetwork.currentScore) { 5667 if (currentNetwork != null) { 5668 if (VDBG) log(" accepting network in place of " + currentNetwork.name()); 5669 currentNetwork.networkRequests.remove(nri.request.requestId); 5670 currentNetwork.networkLingered.add(nri.request); 5671 affectedNetworks.add(currentNetwork); 5672 } else { 5673 if (VDBG) log(" accepting network in place of null"); 5674 } 5675 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 5676 newNetwork.networkRequests.put(nri.request.requestId, nri.request); 5677 keep = true; 5678 // TODO - this could get expensive if we have alot of requests for this 5679 // network. Think about if there is a way to reduce this. Push 5680 // netid->request mapping to each factory? 5681 sendUpdatedScoreToFactories(nri.request, newNetwork.currentScore); 5682 if (mDefaultRequest.requestId == nri.request.requestId) { 5683 isNewDefault = true; 5684 updateActiveDefaultNetwork(newNetwork); 5685 if (newNetwork.linkProperties != null) { 5686 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnses()); 5687 } else { 5688 setDefaultDnsSystemProperties(new ArrayList<InetAddress>()); 5689 } 5690 } 5691 } 5692 } 5693 } 5694 for (NetworkAgentInfo nai : affectedNetworks) { 5695 boolean teardown = true; 5696 for (int i = 0; i < nai.networkRequests.size(); i++) { 5697 NetworkRequest nr = nai.networkRequests.valueAt(i); 5698 try { 5699 if (mNetworkRequests.get(nr).isRequest) { 5700 teardown = false; 5701 } 5702 } catch (Exception e) { 5703 loge("Request " + nr + " not found in mNetworkRequests."); 5704 loge(" it came from request list of " + nai.name()); 5705 } 5706 } 5707 if (teardown) { 5708 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 5709 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 5710 } else { 5711 // not going to linger, so kill the list of linger networks.. only 5712 // notify them of linger if it happens as the result of gaining another, 5713 // but if they transition and old network stays up, don't tell them of linger 5714 // or very delayed loss 5715 nai.networkLingered.clear(); 5716 if (VDBG) log("Lingered for " + nai.name() + " cleared"); 5717 } 5718 } 5719 if (keep) { 5720 if (isNewDefault) { 5721 if (VDBG) log("Switching to new default network: " + newNetwork); 5722 setupDataActivityTracking(newNetwork); 5723 try { 5724 mNetd.setDefaultNetId(newNetwork.network.netId); 5725 } catch (Exception e) { 5726 loge("Exception setting default network :" + e); 5727 } 5728 if (newNetwork.equals(mNetworkForRequestId.get(mDefaultRequest.requestId))) { 5729 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 5730 } 5731 synchronized (ConnectivityService.this) { 5732 // have a new default network, release the transition wakelock in 5733 // a second if it's held. The second pause is to allow apps 5734 // to reconnect over the new network 5735 if (mNetTransitionWakeLock.isHeld()) { 5736 mHandler.sendMessageDelayed(mHandler.obtainMessage( 5737 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 5738 mNetTransitionWakeLockSerialNumber, 0), 5739 1000); 5740 } 5741 } 5742 5743 // this will cause us to come up initially as unconnected and switching 5744 // to connected after our normal pause unless somebody reports us as 5745 // really disconnected 5746 mDefaultInetConditionPublished = 0; 5747 mDefaultConnectionSequence++; 5748 mInetConditionChangeInFlight = false; 5749 // TODO - read the tcp buffer size config string from somewhere 5750 // updateNetworkSettings(); 5751 } 5752 // notify battery stats service about this network 5753// try { 5754 // TODO 5755 //BatteryStatsService.getService().noteNetworkInterfaceType(iface, netType); 5756// } catch (RemoteException e) { } 5757 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 5758 } else { 5759 if (DBG && newNetwork.networkRequests.size() != 0) { 5760 loge("tearing down network with live requests:"); 5761 for (int i=0; i < newNetwork.networkRequests.size(); i++) { 5762 loge(" " + newNetwork.networkRequests.valueAt(i)); 5763 } 5764 } 5765 if (VDBG) log("Validated network turns out to be unwanted. Tear it down."); 5766 newNetwork.asyncChannel.disconnect(); 5767 } 5768 } 5769 5770 5771 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 5772 NetworkInfo.State state = newInfo.getState(); 5773 NetworkInfo oldInfo = networkAgent.networkInfo; 5774 networkAgent.networkInfo = newInfo; 5775 5776 if (oldInfo != null && oldInfo.getState() == state) { 5777 if (VDBG) log("ignoring duplicate network state non-change"); 5778 return; 5779 } 5780 if (DBG) { 5781 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 5782 (oldInfo == null ? "null" : oldInfo.getState()) + 5783 " to " + state); 5784 } 5785 5786 if (state == NetworkInfo.State.CONNECTED) { 5787 // TODO - check if we want it (optimization) 5788 try { 5789 mNetd.createNetwork(networkAgent.network.netId); 5790 } catch (Exception e) { 5791 loge("Error creating Network " + networkAgent.network.netId); 5792 } 5793 updateLinkProperties(networkAgent, null); 5794 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 5795 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 5796 } else if (state == NetworkInfo.State.DISCONNECTED || 5797 state == NetworkInfo.State.SUSPENDED) { 5798 networkAgent.asyncChannel.disconnect(); 5799 } 5800 } 5801 5802 // notify only this one new request of the current state 5803 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 5804 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 5805 // TODO - read state from monitor to decide what to send. 5806// if (nai.networkMonitor.isLingering()) { 5807// notifyType = NetworkCallbacks.LOSING; 5808// } else if (nai.networkMonitor.isEvaluating()) { 5809// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 5810// } 5811 if (nri.request.needsBroadcasts) { 5812 // TODO 5813// sendNetworkBroadcast(nai, notifyType); 5814 } 5815 callCallbackForRequest(nri, nai, notifyType); 5816 } 5817 5818 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 5819 if (VDBG) log("notifyType " + notifyType + " for " + networkAgent.name()); 5820 boolean needsBroadcasts = false; 5821 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 5822 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 5823 NetworkRequestInfo nri = mNetworkRequests.get(nr); 5824 if (VDBG) log(" sending notification for " + nr); 5825 if (nr.needsBroadcasts) needsBroadcasts = true; 5826 callCallbackForRequest(nri, networkAgent, notifyType); 5827 } 5828 if (needsBroadcasts) { 5829 if (notifyType == ConnectivityManager.CALLBACK_AVAILABLE) { 5830 sendConnectedBroadcastDelayed(networkAgent.networkInfo, 5831 getConnectivityChangeDelay()); 5832 } else if (notifyType == ConnectivityManager.CALLBACK_LOST) { 5833 NetworkInfo info = new NetworkInfo(networkAgent.networkInfo); 5834 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 5835 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 5836 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 5837 if (info.isFailover()) { 5838 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 5839 networkAgent.networkInfo.setFailover(false); 5840 } 5841 if (info.getReason() != null) { 5842 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 5843 } 5844 if (info.getExtraInfo() != null) { 5845 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 5846 } 5847 NetworkAgentInfo newDefaultAgent = null; 5848 if (networkAgent.networkRequests.get(mDefaultRequest.requestId) != null) { 5849 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 5850 if (newDefaultAgent != null) { 5851 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 5852 newDefaultAgent.networkInfo); 5853 } else { 5854 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 5855 } 5856 } 5857 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 5858 mDefaultInetConditionPublished); 5859 final Intent immediateIntent = new Intent(intent); 5860 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 5861 sendStickyBroadcast(immediateIntent); 5862 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 5863 if (newDefaultAgent != null) { 5864 sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo, 5865 getConnectivityChangeDelay()); 5866 } 5867 } 5868 } 5869 } 5870 5871 private LinkProperties getLinkPropertiesForTypeInternal(int networkType) { 5872 ArrayList<NetworkAgentInfo> list = mNetworkAgentInfoForType[networkType]; 5873 if (list == null) return null; 5874 try { 5875 return new LinkProperties(list.get(0).linkProperties); 5876 } catch (IndexOutOfBoundsException e) { 5877 return new LinkProperties(); 5878 } 5879 } 5880 5881 private NetworkInfo getNetworkInfoForType(int networkType) { 5882 ArrayList<NetworkAgentInfo> list = mNetworkAgentInfoForType[networkType]; 5883 if (list == null) return null; 5884 try { 5885 return new NetworkInfo(list.get(0).networkInfo); 5886 } catch (IndexOutOfBoundsException e) { 5887 return new NetworkInfo(networkType, 0, "Unknown", ""); 5888 } 5889 } 5890 5891 private NetworkCapabilities getNetworkCapabilitiesForType(int networkType) { 5892 ArrayList<NetworkAgentInfo> list = mNetworkAgentInfoForType[networkType]; 5893 if (list == null) return null; 5894 try { 5895 return new NetworkCapabilities(list.get(0).networkCapabilities); 5896 } catch (IndexOutOfBoundsException e) { 5897 return new NetworkCapabilities(); 5898 } 5899 } 5900} 5901