ConnectivityService.java revision 515350a5e2b3fcac79f4ecfbd3d4d7485c04eff5
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 clear a wakelock when transitioning 347 * from one net to another 348 */ 349 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 350 351 /** 352 * used internally to reload global proxy settings 353 */ 354 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 355 356 /** 357 * used internally to set external dependency met/unmet 358 * arg1 = ENABLED (met) or DISABLED (unmet) 359 * arg2 = NetworkType 360 */ 361 private static final int EVENT_SET_DEPENDENCY_MET = 10; 362 363 /** 364 * used internally to send a sticky broadcast delayed. 365 */ 366 private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; 367 368 /** 369 * Used internally to 370 * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. 371 */ 372 private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; 373 374 private static final int EVENT_VPN_STATE_CHANGED = 13; 375 376 /** 377 * Used internally to disable fail fast of mobile data 378 */ 379 private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; 380 381 /** 382 * used internally to indicate that data sampling interval is up 383 */ 384 private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; 385 386 /** 387 * PAC manager has received new port. 388 */ 389 private static final int EVENT_PROXY_HAS_CHANGED = 16; 390 391 /** 392 * used internally when registering NetworkFactories 393 * obj = NetworkFactoryInfo 394 */ 395 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 396 397 /** 398 * used internally when registering NetworkAgents 399 * obj = Messenger 400 */ 401 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 402 403 /** 404 * used to add a network request 405 * includes a NetworkRequestInfo 406 */ 407 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 408 409 /** 410 * indicates a timeout period is over - check if we had a network yet or not 411 * and if not, call the timeout calback (but leave the request live until they 412 * cancel it. 413 * includes a NetworkRequestInfo 414 */ 415 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 416 417 /** 418 * used to add a network listener - no request 419 * includes a NetworkRequestInfo 420 */ 421 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 422 423 /** 424 * used to remove a network request, either a listener or a real request 425 * includes a NetworkRequest 426 */ 427 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 428 429 /** 430 * used internally when registering NetworkFactories 431 * obj = Messenger 432 */ 433 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 434 435 436 /** Handler used for internal events. */ 437 final private InternalHandler mHandler; 438 /** Handler used for incoming {@link NetworkStateTracker} events. */ 439 final private NetworkStateTrackerHandler mTrackerHandler; 440 441 // list of DeathRecipients used to make sure features are turned off when 442 // a process dies 443 private List<FeatureUser> mFeatureUsers; 444 445 private boolean mSystemReady; 446 private Intent mInitialBroadcast; 447 448 private PowerManager.WakeLock mNetTransitionWakeLock; 449 private String mNetTransitionWakeLockCausedBy = ""; 450 private int mNetTransitionWakeLockSerialNumber; 451 private int mNetTransitionWakeLockTimeout; 452 453 private InetAddress mDefaultDns; 454 455 // Lock for protecting access to mAddedRoutes and mExemptAddresses 456 private final Object mRoutesLock = new Object(); 457 458 // this collection is used to refcount the added routes - if there are none left 459 // it's time to remove the route from the route table 460 @GuardedBy("mRoutesLock") 461 private Collection<RouteInfo> mAddedRoutes = new ArrayList<RouteInfo>(); 462 463 // this collection corresponds to the entries of mAddedRoutes that have routing exemptions 464 // used to handle cleanup of exempt rules 465 @GuardedBy("mRoutesLock") 466 private Collection<LinkAddress> mExemptAddresses = new ArrayList<LinkAddress>(); 467 468 // used in DBG mode to track inet condition reports 469 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 470 private ArrayList mInetLog; 471 472 // track the current default http proxy - tell the world if we get a new one (real change) 473 private ProxyInfo mDefaultProxy = null; 474 private Object mProxyLock = new Object(); 475 private boolean mDefaultProxyDisabled = false; 476 477 // track the global proxy. 478 private ProxyInfo mGlobalProxy = null; 479 480 private PacManager mPacManager = null; 481 482 private SettingsObserver mSettingsObserver; 483 484 private AppOpsManager mAppOpsManager; 485 486 NetworkConfig[] mNetConfigs; 487 int mNetworksDefined; 488 489 private static class RadioAttributes { 490 public int mSimultaneity; 491 public int mType; 492 public RadioAttributes(String init) { 493 String fragments[] = init.split(","); 494 mType = Integer.parseInt(fragments[0]); 495 mSimultaneity = Integer.parseInt(fragments[1]); 496 } 497 } 498 RadioAttributes[] mRadioAttributes; 499 500 // the set of network types that can only be enabled by system/sig apps 501 List mProtectedNetworks; 502 503 private DataConnectionStats mDataConnectionStats; 504 505 private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); 506 507 TelephonyManager mTelephonyManager; 508 509 // sequence number for Networks 510 private final static int MIN_NET_ID = 10; // some reserved marks 511 private final static int MAX_NET_ID = 65535; 512 private int mNextNetId = MIN_NET_ID; 513 514 // sequence number of NetworkRequests 515 private int mNextNetworkRequestId = 1; 516 517 private static final int UID_UNUSED = -1; 518 519 public ConnectivityService(Context context, INetworkManagementService netd, 520 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 521 // Currently, omitting a NetworkFactory will create one internally 522 // TODO: create here when we have cleaner WiMAX support 523 this(context, netd, statsService, policyManager, null); 524 } 525 526 public ConnectivityService(Context context, INetworkManagementService netManager, 527 INetworkStatsService statsService, INetworkPolicyManager policyManager, 528 NetworkFactory netFactory) { 529 if (DBG) log("ConnectivityService starting up"); 530 531 NetworkCapabilities netCap = new NetworkCapabilities(); 532 netCap.addNetworkCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); 533 netCap.addNetworkCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); 534 mDefaultRequest = new NetworkRequest(netCap, true, nextNetworkRequestId()); 535 NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(), 536 NetworkRequestInfo.REQUEST); 537 mNetworkRequests.put(mDefaultRequest, nri); 538 539 HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); 540 handlerThread.start(); 541 mHandler = new InternalHandler(handlerThread.getLooper()); 542 mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); 543 544 if (netFactory == null) { 545 netFactory = new DefaultNetworkFactory(context, mTrackerHandler); 546 } 547 548 // setup our unique device name 549 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 550 String id = Settings.Secure.getString(context.getContentResolver(), 551 Settings.Secure.ANDROID_ID); 552 if (id != null && id.length() > 0) { 553 String name = new String("android-").concat(id); 554 SystemProperties.set("net.hostname", name); 555 } 556 } 557 558 // read our default dns server ip 559 String dns = Settings.Global.getString(context.getContentResolver(), 560 Settings.Global.DEFAULT_DNS_SERVER); 561 if (dns == null || dns.length() == 0) { 562 dns = context.getResources().getString( 563 com.android.internal.R.string.config_default_dns_server); 564 } 565 try { 566 mDefaultDns = NetworkUtils.numericToInetAddress(dns); 567 } catch (IllegalArgumentException e) { 568 loge("Error setting defaultDns using " + dns); 569 } 570 571 mContext = checkNotNull(context, "missing Context"); 572 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 573 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 574 mKeyStore = KeyStore.getInstance(); 575 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 576 577 try { 578 mPolicyManager.registerListener(mPolicyListener); 579 } catch (RemoteException e) { 580 // ouch, no rules updates means some processes may never get network 581 loge("unable to register INetworkPolicyListener" + e.toString()); 582 } 583 584 final PowerManager powerManager = (PowerManager) context.getSystemService( 585 Context.POWER_SERVICE); 586 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 587 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 588 com.android.internal.R.integer.config_networkTransitionTimeout); 589 590 mNetworkAgentInfoForType = (ArrayList<NetworkAgentInfo>[]) 591 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 592 593 mNetTrackers = new NetworkStateTracker[ 594 ConnectivityManager.MAX_NETWORK_TYPE+1]; 595 mCurrentLinkProperties = new LinkProperties[ConnectivityManager.MAX_NETWORK_TYPE+1]; 596 597 mRadioAttributes = new RadioAttributes[ConnectivityManager.MAX_RADIO_TYPE+1]; 598 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 599 600 // Load device network attributes from resources 601 String[] raStrings = context.getResources().getStringArray( 602 com.android.internal.R.array.radioAttributes); 603 for (String raString : raStrings) { 604 RadioAttributes r = new RadioAttributes(raString); 605 if (VDBG) log("raString=" + raString + " r=" + r); 606 if (r.mType > ConnectivityManager.MAX_RADIO_TYPE) { 607 loge("Error in radioAttributes - ignoring attempt to define type " + r.mType); 608 continue; 609 } 610 if (mRadioAttributes[r.mType] != null) { 611 loge("Error in radioAttributes - ignoring attempt to redefine type " + 612 r.mType); 613 continue; 614 } 615 mRadioAttributes[r.mType] = r; 616 } 617 618 // TODO: What is the "correct" way to do determine if this is a wifi only device? 619 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 620 log("wifiOnly=" + wifiOnly); 621 String[] naStrings = context.getResources().getStringArray( 622 com.android.internal.R.array.networkAttributes); 623 for (String naString : naStrings) { 624 try { 625 NetworkConfig n = new NetworkConfig(naString); 626 if (VDBG) log("naString=" + naString + " config=" + n); 627 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 628 loge("Error in networkAttributes - ignoring attempt to define type " + 629 n.type); 630 continue; 631 } 632 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 633 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 634 n.type); 635 continue; 636 } 637 if (mNetConfigs[n.type] != null) { 638 loge("Error in networkAttributes - ignoring attempt to redefine type " + 639 n.type); 640 continue; 641 } 642 if (mRadioAttributes[n.radio] == null) { 643 loge("Error in networkAttributes - ignoring attempt to use undefined " + 644 "radio " + n.radio + " in network type " + n.type); 645 continue; 646 } 647 mNetworkAgentInfoForType[n.type] = new ArrayList<NetworkAgentInfo>(); 648 649 mNetConfigs[n.type] = n; 650 mNetworksDefined++; 651 } catch(Exception e) { 652 // ignore it - leave the entry null 653 } 654 } 655 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 656 657 mProtectedNetworks = new ArrayList<Integer>(); 658 int[] protectedNetworks = context.getResources().getIntArray( 659 com.android.internal.R.array.config_protectedNetworks); 660 for (int p : protectedNetworks) { 661 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 662 mProtectedNetworks.add(p); 663 } else { 664 if (DBG) loge("Ignoring protectedNetwork " + p); 665 } 666 } 667 668 // high priority first 669 mPriorityList = new int[mNetworksDefined]; 670 { 671 int insertionPoint = mNetworksDefined-1; 672 int currentLowest = 0; 673 int nextLowest = 0; 674 while (insertionPoint > -1) { 675 for (NetworkConfig na : mNetConfigs) { 676 if (na == null) continue; 677 if (na.priority < currentLowest) continue; 678 if (na.priority > currentLowest) { 679 if (na.priority < nextLowest || nextLowest == 0) { 680 nextLowest = na.priority; 681 } 682 continue; 683 } 684 mPriorityList[insertionPoint--] = na.type; 685 } 686 currentLowest = nextLowest; 687 nextLowest = 0; 688 } 689 } 690 691 mNetRequestersPids = 692 (List<Integer> [])new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE+1]; 693 for (int i : mPriorityList) { 694 mNetRequestersPids[i] = new ArrayList<Integer>(); 695 } 696 697 mFeatureUsers = new ArrayList<FeatureUser>(); 698 699 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 700 && SystemProperties.get("ro.build.type").equals("eng"); 701 702 // Create and start trackers for hard-coded networks 703 for (int targetNetworkType : mPriorityList) { 704 final NetworkConfig config = mNetConfigs[targetNetworkType]; 705 final NetworkStateTracker tracker; 706 try { 707 tracker = netFactory.createTracker(targetNetworkType, config); 708 mNetTrackers[targetNetworkType] = tracker; 709 } catch (IllegalArgumentException e) { 710 Slog.e(TAG, "Problem creating " + getNetworkTypeName(targetNetworkType) 711 + " tracker: " + e); 712 continue; 713 } 714 715 tracker.startMonitoring(context, mTrackerHandler); 716 if (config.isDefault()) { 717 tracker.reconnect(); 718 } 719 } 720 721 mTethering = new Tethering(mContext, mNetd, statsService, this, mHandler.getLooper()); 722 723 //set up the listener for user state for creating user VPNs 724 IntentFilter intentFilter = new IntentFilter(); 725 intentFilter.addAction(Intent.ACTION_USER_STARTING); 726 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 727 mContext.registerReceiverAsUser( 728 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 729 mClat = new Nat464Xlat(mContext, mNetd, this, mTrackerHandler); 730 731 try { 732 mNetd.registerObserver(mTethering); 733 mNetd.registerObserver(mDataActivityObserver); 734 mNetd.registerObserver(mClat); 735 } catch (RemoteException e) { 736 loge("Error registering observer :" + e); 737 } 738 739 if (DBG) { 740 mInetLog = new ArrayList(); 741 } 742 743 mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY); 744 mSettingsObserver.observe(mContext); 745 746 mDataConnectionStats = new DataConnectionStats(mContext); 747 mDataConnectionStats.startMonitoring(); 748 749 // start network sampling .. 750 Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED, null); 751 mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, 752 SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); 753 754 mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); 755 setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); 756 757 IntentFilter filter = new IntentFilter(); 758 filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); 759 mContext.registerReceiver( 760 new BroadcastReceiver() { 761 @Override 762 public void onReceive(Context context, Intent intent) { 763 String action = intent.getAction(); 764 if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { 765 mHandler.sendMessage(mHandler.obtainMessage 766 (EVENT_SAMPLE_INTERVAL_ELAPSED)); 767 } 768 } 769 }, 770 new IntentFilter(filter)); 771 772 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 773 774 filter = new IntentFilter(); 775 filter.addAction(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 776 mContext.registerReceiver(mProvisioningReceiver, filter); 777 778 mAppOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE); 779 } 780 781 private synchronized int nextNetworkRequestId() { 782 return mNextNetworkRequestId++; 783 } 784 785 private synchronized int nextNetId() { 786 int netId = mNextNetId; 787 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 788 return netId; 789 } 790 791 /** 792 * Factory that creates {@link NetworkStateTracker} instances using given 793 * {@link NetworkConfig}. 794 * 795 * TODO - this is obsolete and will be deleted. It's replaced by the 796 * registerNetworkFactory call and protocol. 797 * @Deprecated in favor of registerNetworkFactory dynamic bindings 798 */ 799 public interface NetworkFactory { 800 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config); 801 } 802 803 private static class DefaultNetworkFactory implements NetworkFactory { 804 private final Context mContext; 805 private final Handler mTrackerHandler; 806 807 public DefaultNetworkFactory(Context context, Handler trackerHandler) { 808 mContext = context; 809 mTrackerHandler = trackerHandler; 810 } 811 812 @Override 813 public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config) { 814 switch (config.radio) { 815 case TYPE_DUMMY: 816 return new DummyDataStateTracker(targetNetworkType, config.name); 817 case TYPE_BLUETOOTH: 818 return BluetoothTetheringDataTracker.getInstance(); 819 case TYPE_WIMAX: 820 return makeWimaxStateTracker(mContext, mTrackerHandler); 821 case TYPE_PROXY: 822 return new ProxyDataTracker(); 823 default: 824 throw new IllegalArgumentException( 825 "Trying to create a NetworkStateTracker for an unknown radio type: " 826 + config.radio); 827 } 828 } 829 } 830 831 /** 832 * Loads external WiMAX library and registers as system service, returning a 833 * {@link NetworkStateTracker} for WiMAX. Caller is still responsible for 834 * invoking {@link NetworkStateTracker#startMonitoring(Context, Handler)}. 835 */ 836 private static NetworkStateTracker makeWimaxStateTracker( 837 Context context, Handler trackerHandler) { 838 // Initialize Wimax 839 DexClassLoader wimaxClassLoader; 840 Class wimaxStateTrackerClass = null; 841 Class wimaxServiceClass = null; 842 Class wimaxManagerClass; 843 String wimaxJarLocation; 844 String wimaxLibLocation; 845 String wimaxManagerClassName; 846 String wimaxServiceClassName; 847 String wimaxStateTrackerClassName; 848 849 NetworkStateTracker wimaxStateTracker = null; 850 851 boolean isWimaxEnabled = context.getResources().getBoolean( 852 com.android.internal.R.bool.config_wimaxEnabled); 853 854 if (isWimaxEnabled) { 855 try { 856 wimaxJarLocation = context.getResources().getString( 857 com.android.internal.R.string.config_wimaxServiceJarLocation); 858 wimaxLibLocation = context.getResources().getString( 859 com.android.internal.R.string.config_wimaxNativeLibLocation); 860 wimaxManagerClassName = context.getResources().getString( 861 com.android.internal.R.string.config_wimaxManagerClassname); 862 wimaxServiceClassName = context.getResources().getString( 863 com.android.internal.R.string.config_wimaxServiceClassname); 864 wimaxStateTrackerClassName = context.getResources().getString( 865 com.android.internal.R.string.config_wimaxStateTrackerClassname); 866 867 if (DBG) log("wimaxJarLocation: " + wimaxJarLocation); 868 wimaxClassLoader = new DexClassLoader(wimaxJarLocation, 869 new ContextWrapper(context).getCacheDir().getAbsolutePath(), 870 wimaxLibLocation, ClassLoader.getSystemClassLoader()); 871 872 try { 873 wimaxManagerClass = wimaxClassLoader.loadClass(wimaxManagerClassName); 874 wimaxStateTrackerClass = wimaxClassLoader.loadClass(wimaxStateTrackerClassName); 875 wimaxServiceClass = wimaxClassLoader.loadClass(wimaxServiceClassName); 876 } catch (ClassNotFoundException ex) { 877 loge("Exception finding Wimax classes: " + ex.toString()); 878 return null; 879 } 880 } catch(Resources.NotFoundException ex) { 881 loge("Wimax Resources does not exist!!! "); 882 return null; 883 } 884 885 try { 886 if (DBG) log("Starting Wimax Service... "); 887 888 Constructor wmxStTrkrConst = wimaxStateTrackerClass.getConstructor 889 (new Class[] {Context.class, Handler.class}); 890 wimaxStateTracker = (NetworkStateTracker) wmxStTrkrConst.newInstance( 891 context, trackerHandler); 892 893 Constructor wmxSrvConst = wimaxServiceClass.getDeclaredConstructor 894 (new Class[] {Context.class, wimaxStateTrackerClass}); 895 wmxSrvConst.setAccessible(true); 896 IBinder svcInvoker = (IBinder)wmxSrvConst.newInstance(context, wimaxStateTracker); 897 wmxSrvConst.setAccessible(false); 898 899 ServiceManager.addService(WimaxManagerConstants.WIMAX_SERVICE, svcInvoker); 900 901 } catch(Exception ex) { 902 loge("Exception creating Wimax classes: " + ex.toString()); 903 return null; 904 } 905 } else { 906 loge("Wimax is not enabled or not added to the network attributes!!! "); 907 return null; 908 } 909 910 return wimaxStateTracker; 911 } 912 913 private int getConnectivityChangeDelay() { 914 final ContentResolver cr = mContext.getContentResolver(); 915 916 /** Check system properties for the default value then use secure settings value, if any. */ 917 int defaultDelay = SystemProperties.getInt( 918 "conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY, 919 ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT); 920 return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY, 921 defaultDelay); 922 } 923 924 private boolean teardown(NetworkStateTracker netTracker) { 925 if (netTracker.teardown()) { 926 netTracker.setTeardownRequested(true); 927 return true; 928 } else { 929 return false; 930 } 931 } 932 933 /** 934 * Check if UID should be blocked from using the network represented by the 935 * given {@link NetworkStateTracker}. 936 */ 937 private boolean isNetworkBlocked(int networkType, int uid) { 938 final boolean networkCostly; 939 final int uidRules; 940 941 LinkProperties lp = getLinkPropertiesForType(networkType); 942 final String iface = (lp == null ? "" : lp.getInterfaceName()); 943 synchronized (mRulesLock) { 944 networkCostly = mMeteredIfaces.contains(iface); 945 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 946 } 947 948 if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { 949 return true; 950 } 951 952 // no restrictive rules; network is visible 953 return false; 954 } 955 956 /** 957 * Return a filtered {@link NetworkInfo}, potentially marked 958 * {@link DetailedState#BLOCKED} based on 959 * {@link #isNetworkBlocked}. 960 */ 961 private NetworkInfo getFilteredNetworkInfo(int networkType, int uid) { 962 NetworkInfo info = getNetworkInfoForType(networkType); 963 if (isNetworkBlocked(networkType, uid)) { 964 // network is blocked; clone and override state 965 info = new NetworkInfo(info); 966 info.setDetailedState(DetailedState.BLOCKED, null, null); 967 } 968 if (mLockdownTracker != null) { 969 info = mLockdownTracker.augmentNetworkInfo(info); 970 } 971 return info; 972 } 973 974 /** 975 * Return NetworkInfo for the active (i.e., connected) network interface. 976 * It is assumed that at most one network is active at a time. If more 977 * than one is active, it is indeterminate which will be returned. 978 * @return the info for the active network, or {@code null} if none is 979 * active 980 */ 981 @Override 982 public NetworkInfo getActiveNetworkInfo() { 983 enforceAccessPermission(); 984 final int uid = Binder.getCallingUid(); 985 return getNetworkInfo(mActiveDefaultNetwork, uid); 986 } 987 988 // only called when the default request is satisfied 989 private void updateActiveDefaultNetwork(NetworkAgentInfo nai) { 990 if (nai != null) { 991 mActiveDefaultNetwork = nai.networkInfo.getType(); 992 } else { 993 mActiveDefaultNetwork = TYPE_NONE; 994 } 995 } 996 997 /** 998 * Find the first Provisioning network. 999 * 1000 * @return NetworkInfo or null if none. 1001 */ 1002 private NetworkInfo getProvisioningNetworkInfo() { 1003 enforceAccessPermission(); 1004 1005 // Find the first Provisioning Network 1006 NetworkInfo provNi = null; 1007 for (NetworkInfo ni : getAllNetworkInfo()) { 1008 if (ni.isConnectedToProvisioningNetwork()) { 1009 provNi = ni; 1010 break; 1011 } 1012 } 1013 if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi); 1014 return provNi; 1015 } 1016 1017 /** 1018 * Find the first Provisioning network or the ActiveDefaultNetwork 1019 * if there is no Provisioning network 1020 * 1021 * @return NetworkInfo or null if none. 1022 */ 1023 @Override 1024 public NetworkInfo getProvisioningOrActiveNetworkInfo() { 1025 enforceAccessPermission(); 1026 1027 NetworkInfo provNi = getProvisioningNetworkInfo(); 1028 if (provNi == null) { 1029 final int uid = Binder.getCallingUid(); 1030 provNi = getNetworkInfo(mActiveDefaultNetwork, uid); 1031 } 1032 if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi); 1033 return provNi; 1034 } 1035 1036 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1037 enforceAccessPermission(); 1038 if (isNetworkTypeValid(mActiveDefaultNetwork)) { 1039 return getNetworkInfoForType(mActiveDefaultNetwork); 1040 } 1041 return null; 1042 } 1043 1044 @Override 1045 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1046 enforceConnectivityInternalPermission(); 1047 return getNetworkInfo(mActiveDefaultNetwork, uid); 1048 } 1049 1050 @Override 1051 public NetworkInfo getNetworkInfo(int networkType) { 1052 enforceAccessPermission(); 1053 final int uid = Binder.getCallingUid(); 1054 return getNetworkInfo(networkType, uid); 1055 } 1056 1057 private NetworkInfo getNetworkInfo(int networkType, int uid) { 1058 NetworkInfo info = null; 1059 if (isNetworkTypeValid(networkType)) { 1060 if (getNetworkInfoForType(networkType) != null) { 1061 info = getFilteredNetworkInfo(networkType, uid); 1062 } 1063 } 1064 return info; 1065 } 1066 1067 @Override 1068 public NetworkInfo[] getAllNetworkInfo() { 1069 enforceAccessPermission(); 1070 final int uid = Binder.getCallingUid(); 1071 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1072 synchronized (mRulesLock) { 1073 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1074 networkType++) { 1075 if (getNetworkInfoForType(networkType) != null) { 1076 result.add(getFilteredNetworkInfo(networkType, uid)); 1077 } 1078 } 1079 } 1080 return result.toArray(new NetworkInfo[result.size()]); 1081 } 1082 1083 @Override 1084 public boolean isNetworkSupported(int networkType) { 1085 enforceAccessPermission(); 1086 return (isNetworkTypeValid(networkType) && (getNetworkInfoForType(networkType) != null)); 1087 } 1088 1089 /** 1090 * Return LinkProperties for the active (i.e., connected) default 1091 * network interface. It is assumed that at most one default network 1092 * is active at a time. If more than one is active, it is indeterminate 1093 * which will be returned. 1094 * @return the ip properties for the active network, or {@code null} if 1095 * none is active 1096 */ 1097 @Override 1098 public LinkProperties getActiveLinkProperties() { 1099 return getLinkPropertiesForType(mActiveDefaultNetwork); 1100 } 1101 1102 @Override 1103 public LinkProperties getLinkPropertiesForType(int networkType) { 1104 enforceAccessPermission(); 1105 if (isNetworkTypeValid(networkType)) { 1106 return getLinkPropertiesForTypeInternal(networkType); 1107 } 1108 return null; 1109 } 1110 1111 // TODO - this should be ALL networks 1112 @Override 1113 public LinkProperties getLinkProperties(Network network) { 1114 enforceAccessPermission(); 1115 NetworkAgentInfo nai = mNetworkForNetId.get(network.netId); 1116 if (nai != null) return new LinkProperties(nai.linkProperties); 1117 return null; 1118 } 1119 1120 @Override 1121 public NetworkCapabilities getNetworkCapabilities(Network network) { 1122 enforceAccessPermission(); 1123 NetworkAgentInfo nai = mNetworkForNetId.get(network.netId); 1124 if (nai != null) return new NetworkCapabilities(nai.networkCapabilities); 1125 return null; 1126 } 1127 1128 @Override 1129 public NetworkState[] getAllNetworkState() { 1130 enforceAccessPermission(); 1131 final int uid = Binder.getCallingUid(); 1132 final ArrayList<NetworkState> result = Lists.newArrayList(); 1133 synchronized (mRulesLock) { 1134 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1135 networkType++) { 1136 if (getNetworkInfoForType(networkType) != null) { 1137 final NetworkInfo info = getFilteredNetworkInfo(networkType, uid); 1138 final LinkProperties lp = getLinkPropertiesForTypeInternal(networkType); 1139 final NetworkCapabilities netcap = getNetworkCapabilitiesForType(networkType); 1140 result.add(new NetworkState(info, lp, netcap)); 1141 } 1142 } 1143 } 1144 return result.toArray(new NetworkState[result.size()]); 1145 } 1146 1147 private NetworkState getNetworkStateUnchecked(int networkType) { 1148 if (isNetworkTypeValid(networkType)) { 1149 NetworkInfo info = getNetworkInfoForType(networkType); 1150 if (info != null) { 1151 return new NetworkState(info, 1152 getLinkPropertiesForTypeInternal(networkType), 1153 getNetworkCapabilitiesForType(networkType)); 1154 } 1155 } 1156 return null; 1157 } 1158 1159 @Override 1160 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1161 enforceAccessPermission(); 1162 1163 final long token = Binder.clearCallingIdentity(); 1164 try { 1165 final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork); 1166 if (state != null) { 1167 try { 1168 return mPolicyManager.getNetworkQuotaInfo(state); 1169 } catch (RemoteException e) { 1170 } 1171 } 1172 return null; 1173 } finally { 1174 Binder.restoreCallingIdentity(token); 1175 } 1176 } 1177 1178 @Override 1179 public boolean isActiveNetworkMetered() { 1180 enforceAccessPermission(); 1181 final long token = Binder.clearCallingIdentity(); 1182 try { 1183 return isNetworkMeteredUnchecked(mActiveDefaultNetwork); 1184 } finally { 1185 Binder.restoreCallingIdentity(token); 1186 } 1187 } 1188 1189 private boolean isNetworkMeteredUnchecked(int networkType) { 1190 final NetworkState state = getNetworkStateUnchecked(networkType); 1191 if (state != null) { 1192 try { 1193 return mPolicyManager.isNetworkMetered(state); 1194 } catch (RemoteException e) { 1195 } 1196 } 1197 return false; 1198 } 1199 1200 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1201 @Override 1202 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1203 int deviceType = Integer.parseInt(label); 1204 sendDataActivityBroadcast(deviceType, active, tsNanos); 1205 } 1206 }; 1207 1208 /** 1209 * Used to notice when the calling process dies so we can self-expire 1210 * 1211 * Also used to know if the process has cleaned up after itself when 1212 * our auto-expire timer goes off. The timer has a link to an object. 1213 * 1214 */ 1215 private class FeatureUser implements IBinder.DeathRecipient { 1216 int mNetworkType; 1217 String mFeature; 1218 IBinder mBinder; 1219 int mPid; 1220 int mUid; 1221 long mCreateTime; 1222 1223 FeatureUser(int type, String feature, IBinder binder) { 1224 super(); 1225 mNetworkType = type; 1226 mFeature = feature; 1227 mBinder = binder; 1228 mPid = getCallingPid(); 1229 mUid = getCallingUid(); 1230 mCreateTime = System.currentTimeMillis(); 1231 1232 try { 1233 mBinder.linkToDeath(this, 0); 1234 } catch (RemoteException e) { 1235 binderDied(); 1236 } 1237 } 1238 1239 void unlinkDeathRecipient() { 1240 mBinder.unlinkToDeath(this, 0); 1241 } 1242 1243 public void binderDied() { 1244 log("ConnectivityService FeatureUser binderDied(" + 1245 mNetworkType + ", " + mFeature + ", " + mBinder + "), created " + 1246 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1247 stopUsingNetworkFeature(this, false); 1248 } 1249 1250 public void expire() { 1251 if (VDBG) { 1252 log("ConnectivityService FeatureUser expire(" + 1253 mNetworkType + ", " + mFeature + ", " + mBinder +"), created " + 1254 (System.currentTimeMillis() - mCreateTime) + " mSec ago"); 1255 } 1256 stopUsingNetworkFeature(this, false); 1257 } 1258 1259 public boolean isSameUser(FeatureUser u) { 1260 if (u == null) return false; 1261 1262 return isSameUser(u.mPid, u.mUid, u.mNetworkType, u.mFeature); 1263 } 1264 1265 public boolean isSameUser(int pid, int uid, int networkType, String feature) { 1266 if ((mPid == pid) && (mUid == uid) && (mNetworkType == networkType) && 1267 TextUtils.equals(mFeature, feature)) { 1268 return true; 1269 } 1270 return false; 1271 } 1272 1273 public String toString() { 1274 return "FeatureUser("+mNetworkType+","+mFeature+","+mPid+","+mUid+"), created " + 1275 (System.currentTimeMillis() - mCreateTime) + " mSec ago"; 1276 } 1277 } 1278 1279 // javadoc from interface 1280 public int startUsingNetworkFeature(int networkType, String feature, 1281 IBinder binder) { 1282 long startTime = 0; 1283 if (DBG) { 1284 startTime = SystemClock.elapsedRealtime(); 1285 } 1286 if (VDBG) { 1287 log("startUsingNetworkFeature for net " + networkType + ": " + feature + ", uid=" 1288 + Binder.getCallingUid()); 1289 } 1290 enforceChangePermission(); 1291 try { 1292 if (!ConnectivityManager.isNetworkTypeValid(networkType) || 1293 mNetConfigs[networkType] == null) { 1294 return PhoneConstants.APN_REQUEST_FAILED; 1295 } 1296 1297 FeatureUser f = new FeatureUser(networkType, feature, binder); 1298 1299 // TODO - move this into individual networktrackers 1300 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1301 1302 if (mLockdownEnabled) { 1303 // Since carrier APNs usually aren't available from VPN 1304 // endpoint, mark them as unavailable. 1305 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1306 } 1307 1308 if (mProtectedNetworks.contains(usedNetworkType)) { 1309 enforceConnectivityInternalPermission(); 1310 } 1311 1312 // if UID is restricted, don't allow them to bring up metered APNs 1313 final boolean networkMetered = isNetworkMeteredUnchecked(usedNetworkType); 1314 final int uidRules; 1315 synchronized (mRulesLock) { 1316 uidRules = mUidRules.get(Binder.getCallingUid(), RULE_ALLOW_ALL); 1317 } 1318 if (networkMetered && (uidRules & RULE_REJECT_METERED) != 0) { 1319 return PhoneConstants.APN_REQUEST_FAILED; 1320 } 1321 1322 NetworkStateTracker network = mNetTrackers[usedNetworkType]; 1323 if (network != null) { 1324 Integer currentPid = new Integer(getCallingPid()); 1325 if (usedNetworkType != networkType) { 1326 NetworkInfo ni = network.getNetworkInfo(); 1327 1328 if (ni.isAvailable() == false) { 1329 if (!TextUtils.equals(feature,Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 1330 if (DBG) log("special network not available ni=" + ni.getTypeName()); 1331 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1332 } else { 1333 // else make the attempt anyway - probably giving REQUEST_STARTED below 1334 if (DBG) { 1335 log("special network not available, but try anyway ni=" + 1336 ni.getTypeName()); 1337 } 1338 } 1339 } 1340 1341 int restoreTimer = getRestoreDefaultNetworkDelay(usedNetworkType); 1342 1343 synchronized(this) { 1344 boolean addToList = true; 1345 if (restoreTimer < 0) { 1346 // In case there is no timer is specified for the feature, 1347 // make sure we don't add duplicate entry with the same request. 1348 for (FeatureUser u : mFeatureUsers) { 1349 if (u.isSameUser(f)) { 1350 // Duplicate user is found. Do not add. 1351 addToList = false; 1352 break; 1353 } 1354 } 1355 } 1356 1357 if (addToList) mFeatureUsers.add(f); 1358 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1359 // this gets used for per-pid dns when connected 1360 mNetRequestersPids[usedNetworkType].add(currentPid); 1361 } 1362 } 1363 1364 if (restoreTimer >= 0) { 1365 mHandler.sendMessageDelayed(mHandler.obtainMessage( 1366 EVENT_RESTORE_DEFAULT_NETWORK, f), restoreTimer); 1367 } 1368 1369 if ((ni.isConnectedOrConnecting() == true) && 1370 !network.isTeardownRequested()) { 1371 if (ni.isConnected() == true) { 1372 final long token = Binder.clearCallingIdentity(); 1373 try { 1374 // add the pid-specific dns 1375 handleDnsConfigurationChange(usedNetworkType); 1376 if (VDBG) log("special network already active"); 1377 } finally { 1378 Binder.restoreCallingIdentity(token); 1379 } 1380 return PhoneConstants.APN_ALREADY_ACTIVE; 1381 } 1382 if (VDBG) log("special network already connecting"); 1383 return PhoneConstants.APN_REQUEST_STARTED; 1384 } 1385 1386 // check if the radio in play can make another contact 1387 // assume if cannot for now 1388 1389 if (DBG) { 1390 log("startUsingNetworkFeature reconnecting to " + networkType + ": " + 1391 feature); 1392 } 1393 if (network.reconnect()) { 1394 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_STARTED"); 1395 return PhoneConstants.APN_REQUEST_STARTED; 1396 } else { 1397 if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_FAILED"); 1398 return PhoneConstants.APN_REQUEST_FAILED; 1399 } 1400 } else { 1401 // need to remember this unsupported request so we respond appropriately on stop 1402 synchronized(this) { 1403 mFeatureUsers.add(f); 1404 if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) { 1405 // this gets used for per-pid dns when connected 1406 mNetRequestersPids[usedNetworkType].add(currentPid); 1407 } 1408 } 1409 if (DBG) log("startUsingNetworkFeature X: return -1 unsupported feature."); 1410 return -1; 1411 } 1412 } 1413 if (DBG) log("startUsingNetworkFeature X: return APN_TYPE_NOT_AVAILABLE"); 1414 return PhoneConstants.APN_TYPE_NOT_AVAILABLE; 1415 } finally { 1416 if (DBG) { 1417 final long execTime = SystemClock.elapsedRealtime() - startTime; 1418 if (execTime > 250) { 1419 loge("startUsingNetworkFeature took too long: " + execTime + "ms"); 1420 } else { 1421 if (VDBG) log("startUsingNetworkFeature took " + execTime + "ms"); 1422 } 1423 } 1424 } 1425 } 1426 1427 // javadoc from interface 1428 public int stopUsingNetworkFeature(int networkType, String feature) { 1429 enforceChangePermission(); 1430 1431 int pid = getCallingPid(); 1432 int uid = getCallingUid(); 1433 1434 FeatureUser u = null; 1435 boolean found = false; 1436 1437 synchronized(this) { 1438 for (FeatureUser x : mFeatureUsers) { 1439 if (x.isSameUser(pid, uid, networkType, feature)) { 1440 u = x; 1441 found = true; 1442 break; 1443 } 1444 } 1445 } 1446 if (found && u != null) { 1447 if (VDBG) log("stopUsingNetworkFeature: X"); 1448 // stop regardless of how many other time this proc had called start 1449 return stopUsingNetworkFeature(u, true); 1450 } else { 1451 // none found! 1452 if (VDBG) log("stopUsingNetworkFeature: X not a live request, ignoring"); 1453 return 1; 1454 } 1455 } 1456 1457 private int stopUsingNetworkFeature(FeatureUser u, boolean ignoreDups) { 1458 int networkType = u.mNetworkType; 1459 String feature = u.mFeature; 1460 int pid = u.mPid; 1461 int uid = u.mUid; 1462 1463 NetworkStateTracker tracker = null; 1464 boolean callTeardown = false; // used to carry our decision outside of sync block 1465 1466 if (VDBG) { 1467 log("stopUsingNetworkFeature: net " + networkType + ": " + feature); 1468 } 1469 1470 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1471 if (DBG) { 1472 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1473 ", net is invalid"); 1474 } 1475 return -1; 1476 } 1477 1478 // need to link the mFeatureUsers list with the mNetRequestersPids state in this 1479 // sync block 1480 synchronized(this) { 1481 // check if this process still has an outstanding start request 1482 if (!mFeatureUsers.contains(u)) { 1483 if (VDBG) { 1484 log("stopUsingNetworkFeature: this process has no outstanding requests" + 1485 ", ignoring"); 1486 } 1487 return 1; 1488 } 1489 u.unlinkDeathRecipient(); 1490 mFeatureUsers.remove(mFeatureUsers.indexOf(u)); 1491 // If we care about duplicate requests, check for that here. 1492 // 1493 // This is done to support the extension of a request - the app 1494 // can request we start the network feature again and renew the 1495 // auto-shutoff delay. Normal "stop" calls from the app though 1496 // do not pay attention to duplicate requests - in effect the 1497 // API does not refcount and a single stop will counter multiple starts. 1498 if (ignoreDups == false) { 1499 for (FeatureUser x : mFeatureUsers) { 1500 if (x.isSameUser(u)) { 1501 if (VDBG) log("stopUsingNetworkFeature: dup is found, ignoring"); 1502 return 1; 1503 } 1504 } 1505 } 1506 1507 // TODO - move to individual network trackers 1508 int usedNetworkType = convertFeatureToNetworkType(networkType, feature); 1509 1510 tracker = mNetTrackers[usedNetworkType]; 1511 if (tracker == null) { 1512 if (DBG) { 1513 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1514 " no known tracker for used net type " + usedNetworkType); 1515 } 1516 return -1; 1517 } 1518 if (usedNetworkType != networkType) { 1519 Integer currentPid = new Integer(pid); 1520 mNetRequestersPids[usedNetworkType].remove(currentPid); 1521 1522 final long token = Binder.clearCallingIdentity(); 1523 try { 1524 reassessPidDns(pid, true); 1525 } finally { 1526 Binder.restoreCallingIdentity(token); 1527 } 1528 flushVmDnsCache(); 1529 if (mNetRequestersPids[usedNetworkType].size() != 0) { 1530 if (VDBG) { 1531 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1532 " others still using it"); 1533 } 1534 return 1; 1535 } 1536 callTeardown = true; 1537 } else { 1538 if (DBG) { 1539 log("stopUsingNetworkFeature: net " + networkType + ": " + feature + 1540 " not a known feature - dropping"); 1541 } 1542 } 1543 } 1544 1545 if (callTeardown) { 1546 if (DBG) { 1547 log("stopUsingNetworkFeature: teardown net " + networkType + ": " + feature); 1548 } 1549 tracker.teardown(); 1550 return 1; 1551 } else { 1552 return -1; 1553 } 1554 } 1555 1556 /** 1557 * Check if the address falls into any of currently running VPN's route's. 1558 */ 1559 private boolean isAddressUnderVpn(InetAddress address) { 1560 synchronized (mVpns) { 1561 synchronized (mRoutesLock) { 1562 int uid = UserHandle.getCallingUserId(); 1563 Vpn vpn = mVpns.get(uid); 1564 if (vpn == null) { 1565 return false; 1566 } 1567 1568 // Check if an exemption exists for this address. 1569 for (LinkAddress destination : mExemptAddresses) { 1570 if (!NetworkUtils.addressTypeMatches(address, destination.getAddress())) { 1571 continue; 1572 } 1573 1574 int prefix = destination.getNetworkPrefixLength(); 1575 InetAddress addrMasked = NetworkUtils.getNetworkPart(address, prefix); 1576 InetAddress destMasked = NetworkUtils.getNetworkPart(destination.getAddress(), 1577 prefix); 1578 1579 if (addrMasked.equals(destMasked)) { 1580 return false; 1581 } 1582 } 1583 1584 // Finally check if the address is covered by the VPN. 1585 return vpn.isAddressCovered(address); 1586 } 1587 } 1588 } 1589 1590 /** 1591 * @deprecated use requestRouteToHostAddress instead 1592 * 1593 * Ensure that a network route exists to deliver traffic to the specified 1594 * host via the specified network interface. 1595 * @param networkType the type of the network over which traffic to the 1596 * specified host is to be routed 1597 * @param hostAddress the IP address of the host to which the route is 1598 * desired 1599 * @return {@code true} on success, {@code false} on failure 1600 */ 1601 public boolean requestRouteToHost(int networkType, int hostAddress, String packageName) { 1602 InetAddress inetAddress = NetworkUtils.intToInetAddress(hostAddress); 1603 1604 if (inetAddress == null) { 1605 return false; 1606 } 1607 1608 return requestRouteToHostAddress(networkType, inetAddress.getAddress(), packageName); 1609 } 1610 1611 /** 1612 * Ensure that a network route exists to deliver traffic to the specified 1613 * host via the specified network interface. 1614 * @param networkType the type of the network over which traffic to the 1615 * specified host is to be routed 1616 * @param hostAddress the IP address of the host to which the route is 1617 * desired 1618 * @return {@code true} on success, {@code false} on failure 1619 */ 1620 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress, 1621 String packageName) { 1622 enforceChangePermission(); 1623 if (mProtectedNetworks.contains(networkType)) { 1624 enforceConnectivityInternalPermission(); 1625 } 1626 boolean exempt; 1627 InetAddress addr; 1628 try { 1629 addr = InetAddress.getByAddress(hostAddress); 1630 } catch (UnknownHostException e) { 1631 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1632 return false; 1633 } 1634 // System apps may request routes bypassing the VPN to keep other networks working. 1635 if (Binder.getCallingUid() == Process.SYSTEM_UID) { 1636 exempt = true; 1637 } else { 1638 mAppOpsManager.checkPackage(Binder.getCallingUid(), packageName); 1639 try { 1640 ApplicationInfo info = mContext.getPackageManager().getApplicationInfo(packageName, 1641 0); 1642 exempt = (info.flags & ApplicationInfo.FLAG_SYSTEM) != 0; 1643 } catch (NameNotFoundException e) { 1644 throw new IllegalArgumentException("Failed to find calling package details", e); 1645 } 1646 } 1647 1648 // Non-exempt routeToHost's can only be added if the host is not covered by the VPN. 1649 // This can be either because the VPN's routes do not cover the destination or a 1650 // system application added an exemption that covers this destination. 1651 if (!exempt && isAddressUnderVpn(addr)) { 1652 return false; 1653 } 1654 1655 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1656 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1657 return false; 1658 } 1659 NetworkStateTracker tracker = mNetTrackers[networkType]; 1660 DetailedState netState = DetailedState.DISCONNECTED; 1661 if (tracker != null) { 1662 netState = tracker.getNetworkInfo().getDetailedState(); 1663 } 1664 1665 if ((netState != DetailedState.CONNECTED && 1666 netState != DetailedState.CAPTIVE_PORTAL_CHECK) || 1667 tracker.isTeardownRequested()) { 1668 if (VDBG) { 1669 log("requestRouteToHostAddress on down network " 1670 + "(" + networkType + ") - dropped" 1671 + " tracker=" + tracker 1672 + " netState=" + netState 1673 + " isTeardownRequested=" 1674 + ((tracker != null) ? tracker.isTeardownRequested() : "tracker:null")); 1675 } 1676 return false; 1677 } 1678 final int uid = Binder.getCallingUid(); 1679 final long token = Binder.clearCallingIdentity(); 1680 try { 1681 LinkProperties lp = tracker.getLinkProperties(); 1682 boolean ok = modifyRouteToAddress(lp, addr, ADD, TO_DEFAULT_TABLE, exempt, 1683 tracker.getNetwork().netId, uid); 1684 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1685 return ok; 1686 } finally { 1687 Binder.restoreCallingIdentity(token); 1688 } 1689 } 1690 1691 private boolean addRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, 1692 boolean exempt, int netId) { 1693 return modifyRoute(p, r, 0, ADD, toDefaultTable, exempt, netId, false, UID_UNUSED); 1694 } 1695 1696 private boolean removeRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable, int netId) { 1697 return modifyRoute(p, r, 0, REMOVE, toDefaultTable, UNEXEMPT, netId, false, UID_UNUSED); 1698 } 1699 1700 private boolean modifyRouteToAddress(LinkProperties lp, InetAddress addr, boolean doAdd, 1701 boolean toDefaultTable, boolean exempt, int netId, int uid) { 1702 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1703 if (bestRoute == null) { 1704 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1705 } else { 1706 String iface = bestRoute.getInterface(); 1707 if (bestRoute.getGateway().equals(addr)) { 1708 // if there is no better route, add the implied hostroute for our gateway 1709 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1710 } else { 1711 // if we will connect to this through another route, add a direct route 1712 // to it's gateway 1713 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1714 } 1715 } 1716 return modifyRoute(lp, bestRoute, 0, doAdd, toDefaultTable, exempt, netId, true, uid); 1717 } 1718 1719 /* 1720 * TODO: Clean all this stuff up. Once we have UID-based routing, stuff will break due to 1721 * incorrect tracking of mAddedRoutes, so a cleanup becomes necessary and urgent. But at 1722 * the same time, there'll be no more need to track mAddedRoutes or mExemptAddresses, 1723 * or even have the concept of an exempt address, or do things like "selectBestRoute", or 1724 * determine "default" vs "secondary" table, etc., so the cleanup becomes possible. 1725 */ 1726 private boolean modifyRoute(LinkProperties lp, RouteInfo r, int cycleCount, boolean doAdd, 1727 boolean toDefaultTable, boolean exempt, int netId, boolean legacy, int uid) { 1728 if ((lp == null) || (r == null)) { 1729 if (DBG) log("modifyRoute got unexpected null: " + lp + ", " + r); 1730 return false; 1731 } 1732 1733 if (cycleCount > MAX_HOSTROUTE_CYCLE_COUNT) { 1734 loge("Error modifying route - too much recursion"); 1735 return false; 1736 } 1737 1738 String ifaceName = r.getInterface(); 1739 if(ifaceName == null) { 1740 loge("Error modifying route - no interface name"); 1741 return false; 1742 } 1743 if (r.hasGateway()) { 1744 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), r.getGateway()); 1745 if (bestRoute != null) { 1746 if (bestRoute.getGateway().equals(r.getGateway())) { 1747 // if there is no better route, add the implied hostroute for our gateway 1748 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), ifaceName); 1749 } else { 1750 // if we will connect to our gateway through another route, add a direct 1751 // route to it's gateway 1752 bestRoute = RouteInfo.makeHostRoute(r.getGateway(), 1753 bestRoute.getGateway(), 1754 ifaceName); 1755 } 1756 modifyRoute(lp, bestRoute, cycleCount+1, doAdd, toDefaultTable, exempt, netId, 1757 legacy, uid); 1758 } 1759 } 1760 if (doAdd) { 1761 if (VDBG) log("Adding " + r + " for interface " + ifaceName); 1762 try { 1763 if (toDefaultTable) { 1764 synchronized (mRoutesLock) { 1765 // only track default table - only one apps can effect 1766 mAddedRoutes.add(r); 1767 if (legacy) { 1768 mNetd.addLegacyRouteForNetId(netId, r, uid); 1769 } else { 1770 mNetd.addRoute(netId, r); 1771 } 1772 if (exempt) { 1773 LinkAddress dest = r.getDestination(); 1774 if (!mExemptAddresses.contains(dest)) { 1775 mNetd.setHostExemption(dest); 1776 mExemptAddresses.add(dest); 1777 } 1778 } 1779 } 1780 } else { 1781 if (legacy) { 1782 mNetd.addLegacyRouteForNetId(netId, r, uid); 1783 } else { 1784 mNetd.addRoute(netId, r); 1785 } 1786 } 1787 } catch (Exception e) { 1788 // never crash - catch them all 1789 if (DBG) loge("Exception trying to add a route: " + e); 1790 return false; 1791 } 1792 } else { 1793 // if we remove this one and there are no more like it, then refcount==0 and 1794 // we can remove it from the table 1795 if (toDefaultTable) { 1796 synchronized (mRoutesLock) { 1797 mAddedRoutes.remove(r); 1798 if (mAddedRoutes.contains(r) == false) { 1799 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1800 try { 1801 if (legacy) { 1802 mNetd.removeLegacyRouteForNetId(netId, r, uid); 1803 } else { 1804 mNetd.removeRoute(netId, r); 1805 } 1806 LinkAddress dest = r.getDestination(); 1807 if (mExemptAddresses.contains(dest)) { 1808 mNetd.clearHostExemption(dest); 1809 mExemptAddresses.remove(dest); 1810 } 1811 } catch (Exception e) { 1812 // never crash - catch them all 1813 if (VDBG) loge("Exception trying to remove a route: " + e); 1814 return false; 1815 } 1816 } else { 1817 if (VDBG) log("not removing " + r + " as it's still in use"); 1818 } 1819 } 1820 } else { 1821 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 1822 try { 1823 if (legacy) { 1824 mNetd.removeLegacyRouteForNetId(netId, r, uid); 1825 } else { 1826 mNetd.removeRoute(netId, r); 1827 } 1828 } catch (Exception e) { 1829 // never crash - catch them all 1830 if (VDBG) loge("Exception trying to remove a route: " + e); 1831 return false; 1832 } 1833 } 1834 } 1835 return true; 1836 } 1837 1838 public void setDataDependency(int networkType, boolean met) { 1839 enforceConnectivityInternalPermission(); 1840 1841 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, 1842 (met ? ENABLED : DISABLED), networkType)); 1843 } 1844 1845 private void handleSetDependencyMet(int networkType, boolean met) { 1846 if (mNetTrackers[networkType] != null) { 1847 if (DBG) { 1848 log("handleSetDependencyMet(" + networkType + ", " + met + ")"); 1849 } 1850 mNetTrackers[networkType].setDependencyMet(met); 1851 } 1852 } 1853 1854 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1855 @Override 1856 public void onUidRulesChanged(int uid, int uidRules) { 1857 // caller is NPMS, since we only register with them 1858 if (LOGD_RULES) { 1859 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1860 } 1861 1862 synchronized (mRulesLock) { 1863 // skip update when we've already applied rules 1864 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1865 if (oldRules == uidRules) return; 1866 1867 mUidRules.put(uid, uidRules); 1868 } 1869 1870 // TODO: notify UID when it has requested targeted updates 1871 } 1872 1873 @Override 1874 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1875 // caller is NPMS, since we only register with them 1876 if (LOGD_RULES) { 1877 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1878 } 1879 1880 synchronized (mRulesLock) { 1881 mMeteredIfaces.clear(); 1882 for (String iface : meteredIfaces) { 1883 mMeteredIfaces.add(iface); 1884 } 1885 } 1886 } 1887 1888 @Override 1889 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1890 // caller is NPMS, since we only register with them 1891 if (LOGD_RULES) { 1892 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1893 } 1894 1895 // kick off connectivity change broadcast for active network, since 1896 // global background policy change is radical. 1897 final int networkType = mActiveDefaultNetwork; 1898 if (isNetworkTypeValid(networkType)) { 1899 final NetworkStateTracker tracker = mNetTrackers[networkType]; 1900 if (tracker != null) { 1901 final NetworkInfo info = tracker.getNetworkInfo(); 1902 if (info != null && info.isConnected()) { 1903 sendConnectedBroadcast(info); 1904 } 1905 } 1906 } 1907 } 1908 }; 1909 1910 @Override 1911 public void setPolicyDataEnable(int networkType, boolean enabled) { 1912 // only someone like NPMS should only be calling us 1913 mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); 1914 1915 mHandler.sendMessage(mHandler.obtainMessage( 1916 EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED))); 1917 } 1918 1919 private void handleSetPolicyDataEnable(int networkType, boolean enabled) { 1920 // TODO - handle this passing to factories 1921// if (isNetworkTypeValid(networkType)) { 1922// final NetworkStateTracker tracker = mNetTrackers[networkType]; 1923// if (tracker != null) { 1924// tracker.setPolicyDataEnable(enabled); 1925// } 1926// } 1927 } 1928 1929 private void enforceAccessPermission() { 1930 mContext.enforceCallingOrSelfPermission( 1931 android.Manifest.permission.ACCESS_NETWORK_STATE, 1932 "ConnectivityService"); 1933 } 1934 1935 private void enforceChangePermission() { 1936 mContext.enforceCallingOrSelfPermission( 1937 android.Manifest.permission.CHANGE_NETWORK_STATE, 1938 "ConnectivityService"); 1939 } 1940 1941 // TODO Make this a special check when it goes public 1942 private void enforceTetherChangePermission() { 1943 mContext.enforceCallingOrSelfPermission( 1944 android.Manifest.permission.CHANGE_NETWORK_STATE, 1945 "ConnectivityService"); 1946 } 1947 1948 private void enforceTetherAccessPermission() { 1949 mContext.enforceCallingOrSelfPermission( 1950 android.Manifest.permission.ACCESS_NETWORK_STATE, 1951 "ConnectivityService"); 1952 } 1953 1954 private void enforceConnectivityInternalPermission() { 1955 mContext.enforceCallingOrSelfPermission( 1956 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1957 "ConnectivityService"); 1958 } 1959 1960 private void enforceMarkNetworkSocketPermission() { 1961 //Media server special case 1962 if (Binder.getCallingUid() == Process.MEDIA_UID) { 1963 return; 1964 } 1965 mContext.enforceCallingOrSelfPermission( 1966 android.Manifest.permission.MARK_NETWORK_SOCKET, 1967 "ConnectivityService"); 1968 } 1969 1970 /** 1971 * Handle a {@code DISCONNECTED} event. If this pertains to the non-active 1972 * network, we ignore it. If it is for the active network, we send out a 1973 * broadcast. But first, we check whether it might be possible to connect 1974 * to a different network. 1975 * @param info the {@code NetworkInfo} for the network 1976 */ 1977 private void handleDisconnect(NetworkInfo info) { 1978 1979 int prevNetType = info.getType(); 1980 1981 mNetTrackers[prevNetType].setTeardownRequested(false); 1982 int thisNetId = mNetTrackers[prevNetType].getNetwork().netId; 1983 1984 // Remove idletimer previously setup in {@code handleConnect} 1985// Already in place in new function. This is dead code. 1986// if (mNetConfigs[prevNetType].isDefault()) { 1987// removeDataActivityTracking(prevNetType); 1988// } 1989 1990 /* 1991 * If the disconnected network is not the active one, then don't report 1992 * this as a loss of connectivity. What probably happened is that we're 1993 * getting the disconnect for a network that we explicitly disabled 1994 * in accordance with network preference policies. 1995 */ 1996 if (!mNetConfigs[prevNetType].isDefault()) { 1997 List<Integer> pids = mNetRequestersPids[prevNetType]; 1998 for (Integer pid : pids) { 1999 // will remove them because the net's no longer connected 2000 // need to do this now as only now do we know the pids and 2001 // can properly null things that are no longer referenced. 2002 reassessPidDns(pid.intValue(), false); 2003 } 2004 } 2005 2006 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 2007 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2008 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2009 if (info.isFailover()) { 2010 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2011 info.setFailover(false); 2012 } 2013 if (info.getReason() != null) { 2014 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2015 } 2016 if (info.getExtraInfo() != null) { 2017 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2018 info.getExtraInfo()); 2019 } 2020 2021 if (mNetConfigs[prevNetType].isDefault()) { 2022 tryFailover(prevNetType); 2023 if (mActiveDefaultNetwork != -1) { 2024 NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(); 2025 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo); 2026 } else { 2027 mDefaultInetConditionPublished = 0; // we're not connected anymore 2028 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 2029 } 2030 } 2031 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2032 2033 // Reset interface if no other connections are using the same interface 2034 boolean doReset = true; 2035 LinkProperties linkProperties = mNetTrackers[prevNetType].getLinkProperties(); 2036 if (linkProperties != null) { 2037 String oldIface = linkProperties.getInterfaceName(); 2038 if (TextUtils.isEmpty(oldIface) == false) { 2039 for (NetworkStateTracker networkStateTracker : mNetTrackers) { 2040 if (networkStateTracker == null) continue; 2041 NetworkInfo networkInfo = networkStateTracker.getNetworkInfo(); 2042 if (networkInfo.isConnected() && networkInfo.getType() != prevNetType) { 2043 LinkProperties l = networkStateTracker.getLinkProperties(); 2044 if (l == null) continue; 2045 if (oldIface.equals(l.getInterfaceName())) { 2046 doReset = false; 2047 break; 2048 } 2049 } 2050 } 2051 } 2052 } 2053 2054 // do this before we broadcast the change 2055// Already done in new function. This is dead code. 2056// handleConnectivityChange(prevNetType, doReset); 2057 2058 final Intent immediateIntent = new Intent(intent); 2059 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 2060 sendStickyBroadcast(immediateIntent); 2061 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 2062 /* 2063 * If the failover network is already connected, then immediately send 2064 * out a followup broadcast indicating successful failover 2065 */ 2066 if (mActiveDefaultNetwork != -1) { 2067 sendConnectedBroadcastDelayed(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(), 2068 getConnectivityChangeDelay()); 2069 } 2070 try { 2071// mNetd.removeNetwork(thisNetId); 2072 } catch (Exception e) { 2073 loge("Exception removing network: " + e); 2074 } finally { 2075 mNetTrackers[prevNetType].setNetId(INVALID_NET_ID); 2076 } 2077 } 2078 2079 private void tryFailover(int prevNetType) { 2080 /* 2081 * If this is a default network, check if other defaults are available. 2082 * Try to reconnect on all available and let them hash it out when 2083 * more than one connects. 2084 */ 2085 if (mNetConfigs[prevNetType].isDefault()) { 2086 if (mActiveDefaultNetwork == prevNetType) { 2087 if (DBG) { 2088 log("tryFailover: set mActiveDefaultNetwork=-1, prevNetType=" + prevNetType); 2089 } 2090 mActiveDefaultNetwork = -1; 2091 try { 2092 mNetd.clearDefaultNetId(); 2093 } catch (Exception e) { 2094 loge("Exception clearing default network :" + e); 2095 } 2096 } 2097 2098 // don't signal a reconnect for anything lower or equal priority than our 2099 // current connected default 2100 // TODO - don't filter by priority now - nice optimization but risky 2101// int currentPriority = -1; 2102// if (mActiveDefaultNetwork != -1) { 2103// currentPriority = mNetConfigs[mActiveDefaultNetwork].mPriority; 2104// } 2105 2106 for (int checkType=0; checkType <= ConnectivityManager.MAX_NETWORK_TYPE; checkType++) { 2107 if (checkType == prevNetType) continue; 2108 if (mNetConfigs[checkType] == null) continue; 2109 if (!mNetConfigs[checkType].isDefault()) continue; 2110 if (mNetTrackers[checkType] == null) continue; 2111 2112// Enabling the isAvailable() optimization caused mobile to not get 2113// selected if it was in the middle of error handling. Specifically 2114// a moble connection that took 30 seconds to complete the DEACTIVATE_DATA_CALL 2115// would not be available and we wouldn't get connected to anything. 2116// So removing the isAvailable() optimization below for now. TODO: This 2117// optimization should work and we need to investigate why it doesn't work. 2118// This could be related to how DEACTIVATE_DATA_CALL is reporting its 2119// complete before it is really complete. 2120 2121// if (!mNetTrackers[checkType].isAvailable()) continue; 2122 2123// if (currentPriority >= mNetConfigs[checkType].mPriority) continue; 2124 2125 NetworkStateTracker checkTracker = mNetTrackers[checkType]; 2126 NetworkInfo checkInfo = checkTracker.getNetworkInfo(); 2127 if (!checkInfo.isConnectedOrConnecting() || checkTracker.isTeardownRequested()) { 2128 checkInfo.setFailover(true); 2129 checkTracker.reconnect(); 2130 } 2131 if (DBG) log("Attempting to switch to " + checkInfo.getTypeName()); 2132 } 2133 } 2134 } 2135 2136 public void sendConnectedBroadcast(NetworkInfo info) { 2137 enforceConnectivityInternalPermission(); 2138 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2139 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 2140 } 2141 2142 private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) { 2143 sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); 2144 sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs); 2145 } 2146 2147 private void sendInetConditionBroadcast(NetworkInfo info) { 2148 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 2149 } 2150 2151 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 2152 if (mLockdownTracker != null) { 2153 info = mLockdownTracker.augmentNetworkInfo(info); 2154 } 2155 2156 Intent intent = new Intent(bcastType); 2157 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 2158 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 2159 if (info.isFailover()) { 2160 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 2161 info.setFailover(false); 2162 } 2163 if (info.getReason() != null) { 2164 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 2165 } 2166 if (info.getExtraInfo() != null) { 2167 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 2168 info.getExtraInfo()); 2169 } 2170 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 2171 return intent; 2172 } 2173 2174 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 2175 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 2176 } 2177 2178 private void sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) { 2179 sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs); 2180 } 2181 2182 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 2183 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 2184 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 2185 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 2186 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 2187 final long ident = Binder.clearCallingIdentity(); 2188 try { 2189 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 2190 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 2191 } finally { 2192 Binder.restoreCallingIdentity(ident); 2193 } 2194 } 2195 2196 private void sendStickyBroadcast(Intent intent) { 2197 synchronized(this) { 2198 if (!mSystemReady) { 2199 mInitialBroadcast = new Intent(intent); 2200 } 2201 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2202 if (VDBG) { 2203 log("sendStickyBroadcast: action=" + intent.getAction()); 2204 } 2205 2206 final long ident = Binder.clearCallingIdentity(); 2207 try { 2208 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2209 } finally { 2210 Binder.restoreCallingIdentity(ident); 2211 } 2212 } 2213 } 2214 2215 private void sendStickyBroadcastDelayed(Intent intent, int delayMs) { 2216 if (delayMs <= 0) { 2217 sendStickyBroadcast(intent); 2218 } else { 2219 if (VDBG) { 2220 log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action=" 2221 + intent.getAction()); 2222 } 2223 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2224 EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs); 2225 } 2226 } 2227 2228 void systemReady() { 2229 mCaptivePortalTracker = CaptivePortalTracker.makeCaptivePortalTracker(mContext, this); 2230 loadGlobalProxy(); 2231 2232 synchronized(this) { 2233 mSystemReady = true; 2234 if (mInitialBroadcast != null) { 2235 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 2236 mInitialBroadcast = null; 2237 } 2238 } 2239 // load the global proxy at startup 2240 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 2241 2242 // Try bringing up tracker, but if KeyStore isn't ready yet, wait 2243 // for user to unlock device. 2244 if (!updateLockdownVpn()) { 2245 final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); 2246 mContext.registerReceiver(mUserPresentReceiver, filter); 2247 } 2248 } 2249 2250 private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { 2251 @Override 2252 public void onReceive(Context context, Intent intent) { 2253 // Try creating lockdown tracker, since user present usually means 2254 // unlocked keystore. 2255 if (updateLockdownVpn()) { 2256 mContext.unregisterReceiver(this); 2257 } 2258 } 2259 }; 2260 2261 private boolean isNewNetTypePreferredOverCurrentNetType(int type) { 2262 if (((type != mNetworkPreference) 2263 && (mNetConfigs[mActiveDefaultNetwork].priority > mNetConfigs[type].priority)) 2264 || (mNetworkPreference == mActiveDefaultNetwork)) { 2265 return false; 2266 } 2267 return true; 2268 } 2269 2270 private void handleConnect(NetworkInfo info) { 2271 final int newNetType = info.getType(); 2272 2273 // snapshot isFailover, because sendConnectedBroadcast() resets it 2274 boolean isFailover = info.isFailover(); 2275 final NetworkStateTracker thisNet = mNetTrackers[newNetType]; 2276 final String thisIface = thisNet.getLinkProperties().getInterfaceName(); 2277 2278 if (VDBG) { 2279 log("handleConnect: E newNetType=" + newNetType + " thisIface=" + thisIface 2280 + " isFailover" + isFailover); 2281 } 2282 2283 // if this is a default net and other default is running 2284 // kill the one not preferred 2285 if (mNetConfigs[newNetType].isDefault()) { 2286 if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != newNetType) { 2287 if (isNewNetTypePreferredOverCurrentNetType(newNetType)) { 2288 String teardownPolicy = SystemProperties.get("net.teardownPolicy"); 2289 if (TextUtils.equals(teardownPolicy, "keep") == false) { 2290 // tear down the other 2291 NetworkStateTracker otherNet = 2292 mNetTrackers[mActiveDefaultNetwork]; 2293 if (DBG) { 2294 log("Policy requires " + otherNet.getNetworkInfo().getTypeName() + 2295 " teardown"); 2296 } 2297 if (!teardown(otherNet)) { 2298 loge("Network declined teardown request"); 2299 teardown(thisNet); 2300 return; 2301 } 2302 } else { 2303 //TODO - remove 2304 loge("network teardown skipped due to net.teardownPolicy setting"); 2305 } 2306 } else { 2307 // don't accept this one 2308 if (VDBG) { 2309 log("Not broadcasting CONNECT_ACTION " + 2310 "to torn down network " + info.getTypeName()); 2311 } 2312 teardown(thisNet); 2313 return; 2314 } 2315 } 2316 int thisNetId = nextNetId(); 2317 thisNet.setNetId(thisNetId); 2318 try { 2319// mNetd.createNetwork(thisNetId, thisIface); 2320 } catch (Exception e) { 2321 loge("Exception creating network :" + e); 2322 teardown(thisNet); 2323 return; 2324 } 2325// Already in place in new function. This is dead code. 2326// setupDataActivityTracking(newNetType); 2327 synchronized (ConnectivityService.this) { 2328 // have a new default network, release the transition wakelock in a second 2329 // if it's held. The second pause is to allow apps to reconnect over the 2330 // new network 2331 if (mNetTransitionWakeLock.isHeld()) { 2332 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2333 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 2334 mNetTransitionWakeLockSerialNumber, 0), 2335 1000); 2336 } 2337 } 2338 mActiveDefaultNetwork = newNetType; 2339 try { 2340 mNetd.setDefaultNetId(thisNetId); 2341 } catch (Exception e) { 2342 loge("Exception setting default network :" + e); 2343 } 2344 // this will cause us to come up initially as unconnected and switching 2345 // to connected after our normal pause unless somebody reports us as reall 2346 // disconnected 2347 mDefaultInetConditionPublished = 0; 2348 mDefaultConnectionSequence++; 2349 mInetConditionChangeInFlight = false; 2350 // Don't do this - if we never sign in stay, grey 2351 //reportNetworkCondition(mActiveDefaultNetwork, 100); 2352 updateNetworkSettings(thisNet); 2353 } else { 2354 int thisNetId = nextNetId(); 2355 thisNet.setNetId(thisNetId); 2356 try { 2357// mNetd.createNetwork(thisNetId, thisIface); 2358 } catch (Exception e) { 2359 loge("Exception creating network :" + e); 2360 teardown(thisNet); 2361 return; 2362 } 2363 } 2364 thisNet.setTeardownRequested(false); 2365// Already in place in new function. This is dead code. 2366// updateMtuSizeSettings(thisNet); 2367// handleConnectivityChange(newNetType, false); 2368 sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); 2369 2370 // notify battery stats service about this network 2371 if (thisIface != null) { 2372 try { 2373 BatteryStatsService.getService().noteNetworkInterfaceType(thisIface, newNetType); 2374 } catch (RemoteException e) { 2375 // ignored; service lives in system_server 2376 } 2377 } 2378 } 2379 2380 /** @hide */ 2381 @Override 2382 public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { 2383 enforceConnectivityInternalPermission(); 2384 if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); 2385// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); 2386 } 2387 2388 /** 2389 * Setup data activity tracking for the given network. 2390 * 2391 * Every {@code setupDataActivityTracking} should be paired with a 2392 * {@link #removeDataActivityTracking} for cleanup. 2393 */ 2394 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 2395 final String iface = networkAgent.linkProperties.getInterfaceName(); 2396 2397 final int timeout; 2398 int type = ConnectivityManager.TYPE_NONE; 2399 2400 if (networkAgent.networkCapabilities.hasTransport( 2401 NetworkCapabilities.TRANSPORT_CELLULAR)) { 2402 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2403 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 2404 5); 2405 type = ConnectivityManager.TYPE_MOBILE; 2406 } else if (networkAgent.networkCapabilities.hasTransport( 2407 NetworkCapabilities.TRANSPORT_WIFI)) { 2408 timeout = Settings.Global.getInt(mContext.getContentResolver(), 2409 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 2410 0); 2411 type = ConnectivityManager.TYPE_WIFI; 2412 } else { 2413 // do not track any other networks 2414 timeout = 0; 2415 } 2416 2417 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 2418 try { 2419 mNetd.addIdleTimer(iface, timeout, type); 2420 } catch (Exception e) { 2421 // You shall not crash! 2422 loge("Exception in setupDataActivityTracking " + e); 2423 } 2424 } 2425 } 2426 2427 /** 2428 * Remove data activity tracking when network disconnects. 2429 */ 2430 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 2431 final String iface = networkAgent.linkProperties.getInterfaceName(); 2432 final NetworkCapabilities caps = networkAgent.networkCapabilities; 2433 2434 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 2435 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 2436 try { 2437 // the call fails silently if no idletimer setup for this interface 2438 mNetd.removeIdleTimer(iface); 2439 } catch (Exception e) { 2440 loge("Exception in removeDataActivityTracking " + e); 2441 } 2442 } 2443 } 2444 2445 /** 2446 * After a change in the connectivity state of a network. We're mainly 2447 * concerned with making sure that the list of DNS servers is set up 2448 * according to which networks are connected, and ensuring that the 2449 * right routing table entries exist. 2450 * 2451 * TODO - delete when we're sure all this functionallity is captured. 2452 */ 2453 private void handleConnectivityChange(int netType, LinkProperties curLp, boolean doReset) { 2454 int resetMask = doReset ? NetworkUtils.RESET_ALL_ADDRESSES : 0; 2455 boolean exempt = ConnectivityManager.isNetworkTypeExempt(netType); 2456 if (VDBG) { 2457 log("handleConnectivityChange: netType=" + netType + " doReset=" + doReset 2458 + " resetMask=" + resetMask); 2459 } 2460 2461 /* 2462 * If a non-default network is enabled, add the host routes that 2463 * will allow it's DNS servers to be accessed. 2464 */ 2465 handleDnsConfigurationChange(netType); 2466 2467 LinkProperties newLp = null; 2468 2469 if (mNetTrackers[netType].getNetworkInfo().isConnected()) { 2470 newLp = mNetTrackers[netType].getLinkProperties(); 2471 if (VDBG) { 2472 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2473 " doReset=" + doReset + " resetMask=" + resetMask + 2474 "\n curLp=" + curLp + 2475 "\n newLp=" + newLp); 2476 } 2477 2478 if (curLp != null) { 2479 if (curLp.isIdenticalInterfaceName(newLp)) { 2480 CompareResult<LinkAddress> car = curLp.compareAddresses(newLp); 2481 if ((car.removed.size() != 0) || (car.added.size() != 0)) { 2482 for (LinkAddress linkAddr : car.removed) { 2483 if (linkAddr.getAddress() instanceof Inet4Address) { 2484 resetMask |= NetworkUtils.RESET_IPV4_ADDRESSES; 2485 } 2486 if (linkAddr.getAddress() instanceof Inet6Address) { 2487 resetMask |= NetworkUtils.RESET_IPV6_ADDRESSES; 2488 } 2489 } 2490 if (DBG) { 2491 log("handleConnectivityChange: addresses changed" + 2492 " linkProperty[" + netType + "]:" + " resetMask=" + resetMask + 2493 "\n car=" + car); 2494 } 2495 } else { 2496 if (VDBG) { 2497 log("handleConnectivityChange: addresses are the same reset per" + 2498 " doReset linkProperty[" + netType + "]:" + 2499 " resetMask=" + resetMask); 2500 } 2501 } 2502 } else { 2503 resetMask = NetworkUtils.RESET_ALL_ADDRESSES; 2504 if (DBG) { 2505 log("handleConnectivityChange: interface not not equivalent reset both" + 2506 " linkProperty[" + netType + "]:" + 2507 " resetMask=" + resetMask); 2508 } 2509 } 2510 } 2511 if (mNetConfigs[netType].isDefault()) { 2512 handleApplyDefaultProxy(newLp.getHttpProxy()); 2513 } 2514 } else { 2515 if (VDBG) { 2516 log("handleConnectivityChange: changed linkProperty[" + netType + "]:" + 2517 " doReset=" + doReset + " resetMask=" + resetMask + 2518 "\n curLp=" + curLp + 2519 "\n newLp= null"); 2520 } 2521 } 2522 mCurrentLinkProperties[netType] = newLp; 2523 boolean resetDns = updateRoutes(newLp, curLp, mNetConfigs[netType].isDefault(), exempt, 2524 mNetTrackers[netType].getNetwork().netId); 2525 2526 if (resetMask != 0 || resetDns) { 2527 if (VDBG) log("handleConnectivityChange: resetting"); 2528 if (curLp != null) { 2529 if (VDBG) log("handleConnectivityChange: resetting curLp=" + curLp); 2530 for (String iface : curLp.getAllInterfaceNames()) { 2531 if (TextUtils.isEmpty(iface) == false) { 2532 if (resetMask != 0) { 2533 if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")"); 2534 NetworkUtils.resetConnections(iface, resetMask); 2535 2536 // Tell VPN the interface is down. It is a temporary 2537 // but effective fix to make VPN aware of the change. 2538 if ((resetMask & NetworkUtils.RESET_IPV4_ADDRESSES) != 0) { 2539 synchronized(mVpns) { 2540 for (int i = 0; i < mVpns.size(); i++) { 2541 mVpns.valueAt(i).interfaceStatusChanged(iface, false); 2542 } 2543 } 2544 } 2545 } 2546 } else { 2547 loge("Can't reset connection for type "+netType); 2548 } 2549 } 2550 if (resetDns) { 2551 flushVmDnsCache(); 2552 if (VDBG) log("resetting DNS cache for type " + netType); 2553 try { 2554 mNetd.flushNetworkDnsCache(mNetTrackers[netType].getNetwork().netId); 2555 } catch (Exception e) { 2556 // never crash - catch them all 2557 if (DBG) loge("Exception resetting dns cache: " + e); 2558 } 2559 } 2560 } 2561 } 2562 2563 // TODO: Temporary notifying upstread change to Tethering. 2564 // @see bug/4455071 2565 /** Notify TetheringService if interface name has been changed. */ 2566 if (TextUtils.equals(mNetTrackers[netType].getNetworkInfo().getReason(), 2567 PhoneConstants.REASON_LINK_PROPERTIES_CHANGED)) { 2568 if (isTetheringSupported()) { 2569 mTethering.handleTetherIfaceChange(); 2570 } 2571 } 2572 } 2573 2574 /** 2575 * Add and remove routes using the old properties (null if not previously connected), 2576 * new properties (null if becoming disconnected). May even be double null, which 2577 * is a noop. 2578 * Uses isLinkDefault to determine if default routes should be set or conversely if 2579 * host routes should be set to the dns servers 2580 * returns a boolean indicating the routes changed 2581 */ 2582 private boolean updateRoutes(LinkProperties newLp, LinkProperties curLp, 2583 boolean isLinkDefault, boolean exempt, int netId) { 2584 Collection<RouteInfo> routesToAdd = null; 2585 CompareResult<InetAddress> dnsDiff = new CompareResult<InetAddress>(); 2586 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 2587 if (curLp != null) { 2588 // check for the delta between the current set and the new 2589 routeDiff = curLp.compareAllRoutes(newLp); 2590 dnsDiff = curLp.compareDnses(newLp); 2591 } else if (newLp != null) { 2592 routeDiff.added = newLp.getAllRoutes(); 2593 dnsDiff.added = newLp.getDnses(); 2594 } 2595 2596 boolean routesChanged = (routeDiff.removed.size() != 0 || routeDiff.added.size() != 0); 2597 2598 for (RouteInfo r : routeDiff.removed) { 2599 if (isLinkDefault || ! r.isDefaultRoute()) { 2600 if (VDBG) log("updateRoutes: default remove route r=" + r); 2601 removeRoute(curLp, r, TO_DEFAULT_TABLE, netId); 2602 } 2603 if (isLinkDefault == false) { 2604 // remove from a secondary route table 2605 removeRoute(curLp, r, TO_SECONDARY_TABLE, netId); 2606 } 2607 } 2608 2609 for (RouteInfo r : routeDiff.added) { 2610 if (isLinkDefault || ! r.isDefaultRoute()) { 2611 addRoute(newLp, r, TO_DEFAULT_TABLE, exempt, netId); 2612 } else { 2613 // add to a secondary route table 2614 addRoute(newLp, r, TO_SECONDARY_TABLE, UNEXEMPT, netId); 2615 2616 // many radios add a default route even when we don't want one. 2617 // remove the default route unless somebody else has asked for it 2618 String ifaceName = newLp.getInterfaceName(); 2619 synchronized (mRoutesLock) { 2620 if (!TextUtils.isEmpty(ifaceName) && !mAddedRoutes.contains(r)) { 2621 if (VDBG) log("Removing " + r + " for interface " + ifaceName); 2622 try { 2623 mNetd.removeRoute(netId, r); 2624 } catch (Exception e) { 2625 // never crash - catch them all 2626 if (DBG) loge("Exception trying to remove a route: " + e); 2627 } 2628 } 2629 } 2630 } 2631 } 2632 2633 return routesChanged; 2634 } 2635 2636 /** 2637 * Reads the network specific MTU size from reources. 2638 * and set it on it's iface. 2639 */ 2640 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 2641 final String iface = newLp.getInterfaceName(); 2642 final int mtu = newLp.getMtu(); 2643 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 2644 if (VDBG) log("identical MTU - not setting"); 2645 return; 2646 } 2647 2648 if (mtu < 68 || mtu > 10000) { 2649 loge("Unexpected mtu value: " + mtu + ", " + iface); 2650 return; 2651 } 2652 2653 try { 2654 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 2655 mNetd.setMtu(iface, mtu); 2656 } catch (Exception e) { 2657 Slog.e(TAG, "exception in setMtu()" + e); 2658 } 2659 } 2660 2661 /** 2662 * Reads the network specific TCP buffer sizes from SystemProperties 2663 * net.tcp.buffersize.[default|wifi|umts|edge|gprs] and set them for system 2664 * wide use 2665 */ 2666 private void updateNetworkSettings(NetworkStateTracker nt) { 2667 String key = nt.getTcpBufferSizesPropName(); 2668 String bufferSizes = key == null ? null : SystemProperties.get(key); 2669 2670 if (TextUtils.isEmpty(bufferSizes)) { 2671 if (VDBG) log(key + " not found in system properties. Using defaults"); 2672 2673 // Setting to default values so we won't be stuck to previous values 2674 key = "net.tcp.buffersize.default"; 2675 bufferSizes = SystemProperties.get(key); 2676 } 2677 2678 // Set values in kernel 2679 if (bufferSizes.length() != 0) { 2680 if (VDBG) { 2681 log("Setting TCP values: [" + bufferSizes 2682 + "] which comes from [" + key + "]"); 2683 } 2684 setBufferSize(bufferSizes); 2685 } 2686 2687 final String defaultRwndKey = "net.tcp.default_init_rwnd"; 2688 int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); 2689 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 2690 Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); 2691 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 2692 if (rwndValue != 0) { 2693 SystemProperties.set(sysctlKey, rwndValue.toString()); 2694 } 2695 } 2696 2697 /** 2698 * Writes TCP buffer sizes to /sys/kernel/ipv4/tcp_[r/w]mem_[min/def/max] 2699 * which maps to /proc/sys/net/ipv4/tcp_rmem and tcpwmem 2700 * 2701 * @param bufferSizes in the format of "readMin, readInitial, readMax, 2702 * writeMin, writeInitial, writeMax" 2703 */ 2704 private void setBufferSize(String bufferSizes) { 2705 try { 2706 String[] values = bufferSizes.split(","); 2707 2708 if (values.length == 6) { 2709 final String prefix = "/sys/kernel/ipv4/tcp_"; 2710 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 2711 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 2712 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 2713 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 2714 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 2715 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 2716 } else { 2717 loge("Invalid buffersize string: " + bufferSizes); 2718 } 2719 } catch (IOException e) { 2720 loge("Can't set tcp buffer sizes:" + e); 2721 } 2722 } 2723 2724 /** 2725 * Adjust the per-process dns entries (net.dns<x>.<pid>) based 2726 * on the highest priority active net which this process requested. 2727 * If there aren't any, clear it out 2728 */ 2729 private void reassessPidDns(int pid, boolean doBump) 2730 { 2731 if (VDBG) log("reassessPidDns for pid " + pid); 2732 Integer myPid = new Integer(pid); 2733 for(int i : mPriorityList) { 2734 if (mNetConfigs[i].isDefault()) { 2735 continue; 2736 } 2737 NetworkStateTracker nt = mNetTrackers[i]; 2738 if (nt.getNetworkInfo().isConnected() && 2739 !nt.isTeardownRequested()) { 2740 LinkProperties p = nt.getLinkProperties(); 2741 if (p == null) continue; 2742 if (mNetRequestersPids[i].contains(myPid)) { 2743 try { 2744 // TODO: Reimplement this via local variable in bionic. 2745 // mNetd.setDnsNetworkForPid(nt.getNetwork().netId, pid); 2746 } catch (Exception e) { 2747 Slog.e(TAG, "exception reasseses pid dns: " + e); 2748 } 2749 return; 2750 } 2751 } 2752 } 2753 // nothing found - delete 2754 try { 2755 // TODO: Reimplement this via local variable in bionic. 2756 // mNetd.clearDnsNetworkForPid(pid); 2757 } catch (Exception e) { 2758 Slog.e(TAG, "exception clear interface from pid: " + e); 2759 } 2760 } 2761 2762 private void flushVmDnsCache() { 2763 /* 2764 * Tell the VMs to toss their DNS caches 2765 */ 2766 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 2767 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 2768 /* 2769 * Connectivity events can happen before boot has completed ... 2770 */ 2771 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2772 final long ident = Binder.clearCallingIdentity(); 2773 try { 2774 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 2775 } finally { 2776 Binder.restoreCallingIdentity(ident); 2777 } 2778 } 2779 2780 // Caller must grab mDnsLock. 2781 private void updateDnsLocked(String network, int netId, 2782 Collection<InetAddress> dnses, String domains) { 2783 int last = 0; 2784 if (dnses.size() == 0 && mDefaultDns != null) { 2785 dnses = new ArrayList(); 2786 dnses.add(mDefaultDns); 2787 if (DBG) { 2788 loge("no dns provided for " + network + " - using " + mDefaultDns.getHostAddress()); 2789 } 2790 } 2791 2792 try { 2793 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), domains); 2794 2795 for (InetAddress dns : dnses) { 2796 ++last; 2797 String key = "net.dns" + last; 2798 String value = dns.getHostAddress(); 2799 SystemProperties.set(key, value); 2800 } 2801 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 2802 String key = "net.dns" + i; 2803 SystemProperties.set(key, ""); 2804 } 2805 mNumDnsEntries = last; 2806 } catch (Exception e) { 2807 loge("exception setting default dns interface: " + e); 2808 } 2809 } 2810 2811 private void handleDnsConfigurationChange(int netType) { 2812 // add default net's dns entries 2813 NetworkStateTracker nt = mNetTrackers[netType]; 2814 if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) { 2815 LinkProperties p = nt.getLinkProperties(); 2816 if (p == null) return; 2817 Collection<InetAddress> dnses = p.getDnses(); 2818 int netId = nt.getNetwork().netId; 2819 if (mNetConfigs[netType].isDefault()) { 2820 String network = nt.getNetworkInfo().getTypeName(); 2821 synchronized (mDnsLock) { 2822 updateDnsLocked(network, netId, dnses, p.getDomains()); 2823 } 2824 } else { 2825 try { 2826 mNetd.setDnsServersForNetwork(netId, 2827 NetworkUtils.makeStrings(dnses), p.getDomains()); 2828 } catch (Exception e) { 2829 if (DBG) loge("exception setting dns servers: " + e); 2830 } 2831 // set per-pid dns for attached secondary nets 2832 List<Integer> pids = mNetRequestersPids[netType]; 2833 for (Integer pid : pids) { 2834 try { 2835 // TODO: Reimplement this via local variable in bionic. 2836 // mNetd.setDnsNetworkForPid(netId, pid); 2837 } catch (Exception e) { 2838 Slog.e(TAG, "exception setting interface for pid: " + e); 2839 } 2840 } 2841 } 2842 flushVmDnsCache(); 2843 } 2844 } 2845 2846 private int getRestoreDefaultNetworkDelay(int networkType) { 2847 String restoreDefaultNetworkDelayStr = SystemProperties.get( 2848 NETWORK_RESTORE_DELAY_PROP_NAME); 2849 if(restoreDefaultNetworkDelayStr != null && 2850 restoreDefaultNetworkDelayStr.length() != 0) { 2851 try { 2852 return Integer.valueOf(restoreDefaultNetworkDelayStr); 2853 } catch (NumberFormatException e) { 2854 } 2855 } 2856 // if the system property isn't set, use the value for the apn type 2857 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 2858 2859 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 2860 (mNetConfigs[networkType] != null)) { 2861 ret = mNetConfigs[networkType].restoreTime; 2862 } 2863 return ret; 2864 } 2865 2866 @Override 2867 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 2868 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 2869 if (mContext.checkCallingOrSelfPermission( 2870 android.Manifest.permission.DUMP) 2871 != PackageManager.PERMISSION_GRANTED) { 2872 pw.println("Permission Denial: can't dump ConnectivityService " + 2873 "from from pid=" + Binder.getCallingPid() + ", uid=" + 2874 Binder.getCallingUid()); 2875 return; 2876 } 2877 2878 pw.println("NetworkFactories for:"); 2879 pw.increaseIndent(); 2880 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2881 pw.println(nfi.name); 2882 } 2883 pw.decreaseIndent(); 2884 pw.println(); 2885 2886 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 2887 pw.print("Active default network: "); 2888 if (defaultNai == null) { 2889 pw.println("none"); 2890 } else { 2891 pw.println(defaultNai.network.netId); 2892 } 2893 pw.println(); 2894 2895 pw.println("Current Networks:"); 2896 pw.increaseIndent(); 2897 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2898 pw.println(nai.toString()); 2899 pw.increaseIndent(); 2900 pw.println("Requests:"); 2901 pw.increaseIndent(); 2902 for (int i = 0; i < nai.networkRequests.size(); i++) { 2903 pw.println(nai.networkRequests.valueAt(i).toString()); 2904 } 2905 pw.decreaseIndent(); 2906 pw.println("Lingered:"); 2907 pw.increaseIndent(); 2908 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 2909 pw.decreaseIndent(); 2910 pw.decreaseIndent(); 2911 } 2912 pw.decreaseIndent(); 2913 pw.println(); 2914 2915 pw.println("Network Requests:"); 2916 pw.increaseIndent(); 2917 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2918 pw.println(nri.toString()); 2919 } 2920 pw.println(); 2921 pw.decreaseIndent(); 2922 2923 synchronized (this) { 2924 pw.println("NetworkTranstionWakeLock is currently " + 2925 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); 2926 pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); 2927 } 2928 pw.println(); 2929 2930 mTethering.dump(fd, pw, args); 2931 2932 if (mInetLog != null) { 2933 pw.println(); 2934 pw.println("Inet condition reports:"); 2935 pw.increaseIndent(); 2936 for(int i = 0; i < mInetLog.size(); i++) { 2937 pw.println(mInetLog.get(i)); 2938 } 2939 pw.decreaseIndent(); 2940 } 2941 } 2942 2943 // must be stateless - things change under us. 2944 private class NetworkStateTrackerHandler extends Handler { 2945 public NetworkStateTrackerHandler(Looper looper) { 2946 super(looper); 2947 } 2948 2949 @Override 2950 public void handleMessage(Message msg) { 2951 NetworkInfo info; 2952 switch (msg.what) { 2953 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 2954 handleAsyncChannelHalfConnect(msg); 2955 break; 2956 } 2957 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 2958 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2959 if (nai != null) nai.asyncChannel.disconnect(); 2960 break; 2961 } 2962 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 2963 handleAsyncChannelDisconnected(msg); 2964 break; 2965 } 2966 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 2967 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2968 if (nai == null) { 2969 loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); 2970 } else { 2971 updateCapabilities(nai, (NetworkCapabilities)msg.obj); 2972 } 2973 break; 2974 } 2975 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 2976 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2977 if (nai == null) { 2978 loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); 2979 } else { 2980 if (VDBG) log("Update of Linkproperties for " + nai.name()); 2981 LinkProperties oldLp = nai.linkProperties; 2982 nai.linkProperties = (LinkProperties)msg.obj; 2983 updateLinkProperties(nai, oldLp); 2984 } 2985 break; 2986 } 2987 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 2988 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2989 if (nai == null) { 2990 loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); 2991 break; 2992 } 2993 info = (NetworkInfo) msg.obj; 2994 updateNetworkInfo(nai, info); 2995 break; 2996 } 2997 case NetworkMonitor.EVENT_NETWORK_VALIDATED: { 2998 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2999 handleConnectionValidated(nai); 3000 break; 3001 } 3002 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 3003 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 3004 handleLingerComplete(nai); 3005 break; 3006 } 3007 case NetworkStateTracker.EVENT_STATE_CHANGED: { 3008 info = (NetworkInfo) msg.obj; 3009 NetworkInfo.State state = info.getState(); 3010 3011 if (VDBG || (state == NetworkInfo.State.CONNECTED) || 3012 (state == NetworkInfo.State.DISCONNECTED) || 3013 (state == NetworkInfo.State.SUSPENDED)) { 3014 log("ConnectivityChange for " + 3015 info.getTypeName() + ": " + 3016 state + "/" + info.getDetailedState()); 3017 } 3018 3019 // Since mobile has the notion of a network/apn that can be used for 3020 // provisioning we need to check every time we're connected as 3021 // CaptiveProtalTracker won't detected it because DCT doesn't report it 3022 // as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its 3023 // reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which 3024 // is received by MDST and sent here as EVENT_STATE_CHANGED. 3025 if (ConnectivityManager.isNetworkTypeMobile(info.getType()) 3026 && (0 != Settings.Global.getInt(mContext.getContentResolver(), 3027 Settings.Global.DEVICE_PROVISIONED, 0)) 3028 && (((state == NetworkInfo.State.CONNECTED) 3029 && (info.getType() == ConnectivityManager.TYPE_MOBILE)) 3030 || info.isConnectedToProvisioningNetwork())) { 3031 log("ConnectivityChange checkMobileProvisioning for" 3032 + " TYPE_MOBILE or ProvisioningNetwork"); 3033 checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS); 3034 } 3035 3036 EventLogTags.writeConnectivityStateChanged( 3037 info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); 3038 3039 if (info.isConnectedToProvisioningNetwork()) { 3040 /** 3041 * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING 3042 * for now its an in between network, its a network that 3043 * is actually a default network but we don't want it to be 3044 * announced as such to keep background applications from 3045 * trying to use it. It turns out that some still try so we 3046 * take the additional step of clearing any default routes 3047 * to the link that may have incorrectly setup by the lower 3048 * levels. 3049 */ 3050 LinkProperties lp = getLinkPropertiesForTypeInternal(info.getType()); 3051 if (DBG) { 3052 log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); 3053 } 3054 3055 // Clear any default routes setup by the radio so 3056 // any activity by applications trying to use this 3057 // connection will fail until the provisioning network 3058 // is enabled. 3059 for (RouteInfo r : lp.getRoutes()) { 3060 removeRoute(lp, r, TO_DEFAULT_TABLE, 3061 mNetTrackers[info.getType()].getNetwork().netId); 3062 } 3063 } else if (state == NetworkInfo.State.DISCONNECTED) { 3064 } else if (state == NetworkInfo.State.SUSPENDED) { 3065 } else if (state == NetworkInfo.State.CONNECTED) { 3066 // handleConnect(info); 3067 } 3068 if (mLockdownTracker != null) { 3069 mLockdownTracker.onNetworkInfoChanged(info); 3070 } 3071 break; 3072 } 3073 case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { 3074 info = (NetworkInfo) msg.obj; 3075 // TODO: Temporary allowing network configuration 3076 // change not resetting sockets. 3077 // @see bug/4455071 3078 handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], 3079 false); 3080 break; 3081 } 3082 case NetworkStateTracker.EVENT_NETWORK_SUBTYPE_CHANGED: { 3083 info = (NetworkInfo) msg.obj; 3084 int type = info.getType(); 3085 if (mNetConfigs[type].isDefault()) updateNetworkSettings(mNetTrackers[type]); 3086 break; 3087 } 3088 } 3089 } 3090 } 3091 3092 private void handleAsyncChannelHalfConnect(Message msg) { 3093 AsyncChannel ac = (AsyncChannel) msg.obj; 3094 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 3095 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3096 if (VDBG) log("NetworkFactory connected"); 3097 // A network factory has connected. Send it all current NetworkRequests. 3098 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3099 if (nri.isRequest == false) continue; 3100 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 3101 ac.sendMessage(NetworkFactoryProtocol.CMD_REQUEST_NETWORK, 3102 (nai != null ? nai.currentScore : 0), 0, nri.request); 3103 } 3104 } else { 3105 loge("Error connecting NetworkFactory"); 3106 mNetworkFactoryInfos.remove(msg.obj); 3107 } 3108 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 3109 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 3110 if (VDBG) log("NetworkAgent connected"); 3111 // A network agent has requested a connection. Establish the connection. 3112 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 3113 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 3114 } else { 3115 loge("Error connecting NetworkAgent"); 3116 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 3117 try { 3118 mNetworkAgentInfoForType[nai.networkInfo.getType()].remove(nai); 3119 } catch (NullPointerException e) {} 3120 if (nai != null) { 3121 mNetworkForNetId.remove(nai.network.netId); 3122 } 3123 } 3124 } 3125 } 3126 private void handleAsyncChannelDisconnected(Message msg) { 3127 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 3128 if (nai != null) { 3129 if (DBG) { 3130 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 3131 } 3132 // A network agent has disconnected. 3133 // Tell netd to clean up the configuration for this network 3134 // (routing rules, DNS, etc). 3135 try { 3136 mNetd.removeNetwork(nai.network.netId); 3137 } catch (Exception e) { 3138 loge("Exception removing network: " + e); 3139 } 3140 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 3141 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 3142 mNetworkAgentInfos.remove(msg.replyTo); 3143 updateClat(null, nai.linkProperties, nai); 3144 try { 3145 mNetworkAgentInfoForType[nai.networkInfo.getType()].remove(nai); 3146 } catch (NullPointerException e) {} 3147 3148 mNetworkForNetId.remove(nai.network.netId); 3149 // Since we've lost the network, go through all the requests that 3150 // it was satisfying and see if any other factory can satisfy them. 3151 final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>(); 3152 for (int i = 0; i < nai.networkRequests.size(); i++) { 3153 NetworkRequest request = nai.networkRequests.valueAt(i); 3154 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 3155 if (VDBG) { 3156 log(" checking request " + request + ", currentNetwork = " + 3157 currentNetwork != null ? currentNetwork.name() : "null"); 3158 } 3159 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 3160 mNetworkForRequestId.remove(request.requestId); 3161 sendUpdatedScoreToFactories(request, 0); 3162 NetworkAgentInfo alternative = null; 3163 for (Map.Entry entry : mNetworkAgentInfos.entrySet()) { 3164 NetworkAgentInfo existing = (NetworkAgentInfo)entry.getValue(); 3165 if (existing.networkInfo.isConnected() && 3166 request.networkCapabilities.satisfiedByNetworkCapabilities( 3167 existing.networkCapabilities) && 3168 (alternative == null || 3169 alternative.currentScore < existing.currentScore)) { 3170 alternative = existing; 3171 } 3172 } 3173 if (alternative != null && !toActivate.contains(alternative)) { 3174 toActivate.add(alternative); 3175 } 3176 } 3177 } 3178 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 3179 removeDataActivityTracking(nai); 3180 mActiveDefaultNetwork = ConnectivityManager.TYPE_NONE; 3181 } 3182 for (NetworkAgentInfo networkToActivate : toActivate) { 3183 networkToActivate.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 3184 } 3185 } 3186 } 3187 3188 private void handleRegisterNetworkRequest(Message msg) { 3189 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 3190 final NetworkCapabilities newCap = nri.request.networkCapabilities; 3191 int score = 0; 3192 3193 // Check for the best currently alive network that satisfies this request 3194 NetworkAgentInfo bestNetwork = null; 3195 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 3196 if (VDBG) log("handleRegisterNetworkRequest checking " + network.name()); 3197 if (newCap.satisfiedByNetworkCapabilities(network.networkCapabilities)) { 3198 if (VDBG) log("apparently satisfied. currentScore=" + network.currentScore); 3199 if ((bestNetwork == null) || bestNetwork.currentScore < network.currentScore) { 3200 bestNetwork = network; 3201 } 3202 } 3203 } 3204 if (bestNetwork != null) { 3205 if (VDBG) log("using " + bestNetwork.name()); 3206 bestNetwork.networkRequests.put(nri.request.requestId, nri.request); 3207 notifyNetworkCallback(bestNetwork, nri); 3208 score = bestNetwork.currentScore; 3209 } 3210 mNetworkRequests.put(nri.request, nri); 3211 if (msg.what == EVENT_REGISTER_NETWORK_REQUEST) { 3212 if (DBG) log("sending new NetworkRequest to factories"); 3213 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3214 nfi.asyncChannel.sendMessage(NetworkFactoryProtocol.CMD_REQUEST_NETWORK, score, 0, nri.request); 3215 } 3216 } 3217 } 3218 3219 private void handleReleaseNetworkRequest(NetworkRequest request) { 3220 if (DBG) log("releasing NetworkRequest " + request); 3221 NetworkRequestInfo nri = mNetworkRequests.remove(request); 3222 if (nri != null) { 3223 // tell the network currently servicing this that it's no longer interested 3224 NetworkAgentInfo affectedNetwork = mNetworkForRequestId.get(nri.request.requestId); 3225 if (affectedNetwork != null) { 3226 mNetworkForRequestId.remove(nri.request.requestId); 3227 affectedNetwork.networkRequests.remove(nri.request.requestId); 3228 if (VDBG) { 3229 log(" Removing from current network " + affectedNetwork.name() + ", leaving " + 3230 affectedNetwork.networkRequests.size() + " requests."); 3231 } 3232 } 3233 3234 if (nri.isRequest) { 3235 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 3236 nfi.asyncChannel.sendMessage(NetworkFactoryProtocol.CMD_CANCEL_REQUEST, nri.request); 3237 } 3238 3239 if (affectedNetwork != null) { 3240 // check if this network still has live requests - otherwise, tear down 3241 // TODO - probably push this to the NF/NA 3242 boolean keep = false; 3243 for (int i = 0; i < affectedNetwork.networkRequests.size(); i++) { 3244 NetworkRequest r = affectedNetwork.networkRequests.valueAt(i); 3245 if (mNetworkRequests.get(r).isRequest) { 3246 keep = true; 3247 break; 3248 } 3249 } 3250 if (keep == false) { 3251 if (DBG) log("no live requests for " + affectedNetwork.name() + 3252 "; disconnecting"); 3253 affectedNetwork.asyncChannel.disconnect(); 3254 } 3255 } 3256 } 3257 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 3258 } 3259 } 3260 3261 private class InternalHandler extends Handler { 3262 public InternalHandler(Looper looper) { 3263 super(looper); 3264 } 3265 3266 @Override 3267 public void handleMessage(Message msg) { 3268 NetworkInfo info; 3269 switch (msg.what) { 3270 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 3271 String causedBy = null; 3272 synchronized (ConnectivityService.this) { 3273 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 3274 mNetTransitionWakeLock.isHeld()) { 3275 mNetTransitionWakeLock.release(); 3276 causedBy = mNetTransitionWakeLockCausedBy; 3277 } 3278 } 3279 if (causedBy != null) { 3280 log("NetTransition Wakelock for " + causedBy + " released by timeout"); 3281 } 3282 break; 3283 } 3284 case EVENT_RESTORE_DEFAULT_NETWORK: { 3285 FeatureUser u = (FeatureUser)msg.obj; 3286 u.expire(); 3287 break; 3288 } 3289 case EVENT_INET_CONDITION_CHANGE: { 3290 int netType = msg.arg1; 3291 int condition = msg.arg2; 3292 handleInetConditionChange(netType, condition); 3293 break; 3294 } 3295 case EVENT_INET_CONDITION_HOLD_END: { 3296 int netType = msg.arg1; 3297 int sequence = msg.arg2; 3298 handleInetConditionHoldEnd(netType, sequence); 3299 break; 3300 } 3301 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 3302 handleDeprecatedGlobalHttpProxy(); 3303 break; 3304 } 3305 case EVENT_SET_DEPENDENCY_MET: { 3306 boolean met = (msg.arg1 == ENABLED); 3307 handleSetDependencyMet(msg.arg2, met); 3308 break; 3309 } 3310 case EVENT_SEND_STICKY_BROADCAST_INTENT: { 3311 Intent intent = (Intent)msg.obj; 3312 sendStickyBroadcast(intent); 3313 break; 3314 } 3315 case EVENT_SET_POLICY_DATA_ENABLE: { 3316 final int networkType = msg.arg1; 3317 final boolean enabled = msg.arg2 == ENABLED; 3318 handleSetPolicyDataEnable(networkType, enabled); 3319 break; 3320 } 3321 case EVENT_VPN_STATE_CHANGED: { 3322 if (mLockdownTracker != null) { 3323 mLockdownTracker.onVpnStateChanged((NetworkInfo) msg.obj); 3324 } 3325 break; 3326 } 3327 case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { 3328 int tag = mEnableFailFastMobileDataTag.get(); 3329 if (msg.arg1 == tag) { 3330 MobileDataStateTracker mobileDst = 3331 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 3332 if (mobileDst != null) { 3333 mobileDst.setEnableFailFastMobileData(msg.arg2); 3334 } 3335 } else { 3336 log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 3337 + " != tag:" + tag); 3338 } 3339 break; 3340 } 3341 case EVENT_SAMPLE_INTERVAL_ELAPSED: { 3342 handleNetworkSamplingTimeout(); 3343 break; 3344 } 3345 case EVENT_PROXY_HAS_CHANGED: { 3346 handleApplyDefaultProxy((ProxyInfo)msg.obj); 3347 break; 3348 } 3349 case EVENT_REGISTER_NETWORK_FACTORY: { 3350 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 3351 break; 3352 } 3353 case EVENT_UNREGISTER_NETWORK_FACTORY: { 3354 handleUnregisterNetworkFactory((Messenger)msg.obj); 3355 break; 3356 } 3357 case EVENT_REGISTER_NETWORK_AGENT: { 3358 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 3359 break; 3360 } 3361 case EVENT_REGISTER_NETWORK_REQUEST: 3362 case EVENT_REGISTER_NETWORK_LISTENER: { 3363 handleRegisterNetworkRequest(msg); 3364 break; 3365 } 3366 case EVENT_RELEASE_NETWORK_REQUEST: { 3367 handleReleaseNetworkRequest((NetworkRequest) msg.obj); 3368 break; 3369 } 3370 } 3371 } 3372 } 3373 3374 // javadoc from interface 3375 public int tether(String iface) { 3376 enforceTetherChangePermission(); 3377 3378 if (isTetheringSupported()) { 3379 return mTethering.tether(iface); 3380 } else { 3381 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3382 } 3383 } 3384 3385 // javadoc from interface 3386 public int untether(String iface) { 3387 enforceTetherChangePermission(); 3388 3389 if (isTetheringSupported()) { 3390 return mTethering.untether(iface); 3391 } else { 3392 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3393 } 3394 } 3395 3396 // javadoc from interface 3397 public int getLastTetherError(String iface) { 3398 enforceTetherAccessPermission(); 3399 3400 if (isTetheringSupported()) { 3401 return mTethering.getLastTetherError(iface); 3402 } else { 3403 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3404 } 3405 } 3406 3407 // TODO - proper iface API for selection by property, inspection, etc 3408 public String[] getTetherableUsbRegexs() { 3409 enforceTetherAccessPermission(); 3410 if (isTetheringSupported()) { 3411 return mTethering.getTetherableUsbRegexs(); 3412 } else { 3413 return new String[0]; 3414 } 3415 } 3416 3417 public String[] getTetherableWifiRegexs() { 3418 enforceTetherAccessPermission(); 3419 if (isTetheringSupported()) { 3420 return mTethering.getTetherableWifiRegexs(); 3421 } else { 3422 return new String[0]; 3423 } 3424 } 3425 3426 public String[] getTetherableBluetoothRegexs() { 3427 enforceTetherAccessPermission(); 3428 if (isTetheringSupported()) { 3429 return mTethering.getTetherableBluetoothRegexs(); 3430 } else { 3431 return new String[0]; 3432 } 3433 } 3434 3435 public int setUsbTethering(boolean enable) { 3436 enforceTetherChangePermission(); 3437 if (isTetheringSupported()) { 3438 return mTethering.setUsbTethering(enable); 3439 } else { 3440 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 3441 } 3442 } 3443 3444 // TODO - move iface listing, queries, etc to new module 3445 // javadoc from interface 3446 public String[] getTetherableIfaces() { 3447 enforceTetherAccessPermission(); 3448 return mTethering.getTetherableIfaces(); 3449 } 3450 3451 public String[] getTetheredIfaces() { 3452 enforceTetherAccessPermission(); 3453 return mTethering.getTetheredIfaces(); 3454 } 3455 3456 public String[] getTetheringErroredIfaces() { 3457 enforceTetherAccessPermission(); 3458 return mTethering.getErroredIfaces(); 3459 } 3460 3461 // if ro.tether.denied = true we default to no tethering 3462 // gservices could set the secure setting to 1 though to enable it on a build where it 3463 // had previously been turned off. 3464 public boolean isTetheringSupported() { 3465 enforceTetherAccessPermission(); 3466 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 3467 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 3468 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0); 3469 return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || 3470 mTethering.getTetherableWifiRegexs().length != 0 || 3471 mTethering.getTetherableBluetoothRegexs().length != 0) && 3472 mTethering.getUpstreamIfaceTypes().length != 0); 3473 } 3474 3475 // An API NetworkStateTrackers can call when they lose their network. 3476 // This will automatically be cleared after X seconds or a network becomes CONNECTED, 3477 // whichever happens first. The timer is started by the first caller and not 3478 // restarted by subsequent callers. 3479 public void requestNetworkTransitionWakelock(String forWhom) { 3480 enforceConnectivityInternalPermission(); 3481 synchronized (this) { 3482 if (mNetTransitionWakeLock.isHeld()) return; 3483 mNetTransitionWakeLockSerialNumber++; 3484 mNetTransitionWakeLock.acquire(); 3485 mNetTransitionWakeLockCausedBy = forWhom; 3486 } 3487 mHandler.sendMessageDelayed(mHandler.obtainMessage( 3488 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 3489 mNetTransitionWakeLockSerialNumber, 0), 3490 mNetTransitionWakeLockTimeout); 3491 return; 3492 } 3493 3494 // 100 percent is full good, 0 is full bad. 3495 public void reportInetCondition(int networkType, int percentage) { 3496 if (VDBG) log("reportNetworkCondition(" + networkType + ", " + percentage + ")"); 3497 mContext.enforceCallingOrSelfPermission( 3498 android.Manifest.permission.STATUS_BAR, 3499 "ConnectivityService"); 3500 3501 if (DBG) { 3502 int pid = getCallingPid(); 3503 int uid = getCallingUid(); 3504 String s = pid + "(" + uid + ") reports inet is " + 3505 (percentage > 50 ? "connected" : "disconnected") + " (" + percentage + ") on " + 3506 "network Type " + networkType + " at " + GregorianCalendar.getInstance().getTime(); 3507 mInetLog.add(s); 3508 while(mInetLog.size() > INET_CONDITION_LOG_MAX_SIZE) { 3509 mInetLog.remove(0); 3510 } 3511 } 3512 mHandler.sendMessage(mHandler.obtainMessage( 3513 EVENT_INET_CONDITION_CHANGE, networkType, percentage)); 3514 } 3515 3516 public void reportBadNetwork(Network network) { 3517 //TODO 3518 } 3519 3520 private void handleInetConditionChange(int netType, int condition) { 3521 if (mActiveDefaultNetwork == -1) { 3522 if (DBG) log("handleInetConditionChange: no active default network - ignore"); 3523 return; 3524 } 3525 if (mActiveDefaultNetwork != netType) { 3526 if (DBG) log("handleInetConditionChange: net=" + netType + 3527 " != default=" + mActiveDefaultNetwork + " - ignore"); 3528 return; 3529 } 3530 if (VDBG) { 3531 log("handleInetConditionChange: net=" + 3532 netType + ", condition=" + condition + 3533 ",mActiveDefaultNetwork=" + mActiveDefaultNetwork); 3534 } 3535 mDefaultInetCondition = condition; 3536 int delay; 3537 if (mInetConditionChangeInFlight == false) { 3538 if (VDBG) log("handleInetConditionChange: starting a change hold"); 3539 // setup a new hold to debounce this 3540 if (mDefaultInetCondition > 50) { 3541 delay = Settings.Global.getInt(mContext.getContentResolver(), 3542 Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY, 500); 3543 } else { 3544 delay = Settings.Global.getInt(mContext.getContentResolver(), 3545 Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 3000); 3546 } 3547 mInetConditionChangeInFlight = true; 3548 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_INET_CONDITION_HOLD_END, 3549 mActiveDefaultNetwork, mDefaultConnectionSequence), delay); 3550 } else { 3551 // we've set the new condition, when this hold ends that will get picked up 3552 if (VDBG) log("handleInetConditionChange: currently in hold - not setting new end evt"); 3553 } 3554 } 3555 3556 private void handleInetConditionHoldEnd(int netType, int sequence) { 3557 if (DBG) { 3558 log("handleInetConditionHoldEnd: net=" + netType + 3559 ", condition=" + mDefaultInetCondition + 3560 ", published condition=" + mDefaultInetConditionPublished); 3561 } 3562 mInetConditionChangeInFlight = false; 3563 3564 if (mActiveDefaultNetwork == -1) { 3565 if (DBG) log("handleInetConditionHoldEnd: no active default network - ignoring"); 3566 return; 3567 } 3568 if (mDefaultConnectionSequence != sequence) { 3569 if (DBG) log("handleInetConditionHoldEnd: event hold for obsolete network - ignoring"); 3570 return; 3571 } 3572 // TODO: Figure out why this optimization sometimes causes a 3573 // change in mDefaultInetCondition to be missed and the 3574 // UI to not be updated. 3575 //if (mDefaultInetConditionPublished == mDefaultInetCondition) { 3576 // if (DBG) log("no change in condition - aborting"); 3577 // return; 3578 //} 3579 NetworkInfo networkInfo = getNetworkInfoForType(mActiveDefaultNetwork); 3580 if (networkInfo.isConnected() == false) { 3581 if (DBG) log("handleInetConditionHoldEnd: default network not connected - ignoring"); 3582 return; 3583 } 3584 mDefaultInetConditionPublished = mDefaultInetCondition; 3585 sendInetConditionBroadcast(networkInfo); 3586 return; 3587 } 3588 3589 public ProxyInfo getProxy() { 3590 // this information is already available as a world read/writable jvm property 3591 // so this API change wouldn't have a benifit. It also breaks the passing 3592 // of proxy info to all the JVMs. 3593 // enforceAccessPermission(); 3594 synchronized (mProxyLock) { 3595 ProxyInfo ret = mGlobalProxy; 3596 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 3597 return ret; 3598 } 3599 } 3600 3601 public void setGlobalProxy(ProxyInfo proxyProperties) { 3602 enforceConnectivityInternalPermission(); 3603 3604 synchronized (mProxyLock) { 3605 if (proxyProperties == mGlobalProxy) return; 3606 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 3607 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 3608 3609 String host = ""; 3610 int port = 0; 3611 String exclList = ""; 3612 String pacFileUrl = ""; 3613 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 3614 (proxyProperties.getPacFileUrl() != null))) { 3615 if (!proxyProperties.isValid()) { 3616 if (DBG) 3617 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3618 return; 3619 } 3620 mGlobalProxy = new ProxyInfo(proxyProperties); 3621 host = mGlobalProxy.getHost(); 3622 port = mGlobalProxy.getPort(); 3623 exclList = mGlobalProxy.getExclusionListAsString(); 3624 if (proxyProperties.getPacFileUrl() != null) { 3625 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 3626 } 3627 } else { 3628 mGlobalProxy = null; 3629 } 3630 ContentResolver res = mContext.getContentResolver(); 3631 final long token = Binder.clearCallingIdentity(); 3632 try { 3633 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 3634 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 3635 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 3636 exclList); 3637 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 3638 } finally { 3639 Binder.restoreCallingIdentity(token); 3640 } 3641 } 3642 3643 if (mGlobalProxy == null) { 3644 proxyProperties = mDefaultProxy; 3645 } 3646 sendProxyBroadcast(proxyProperties); 3647 } 3648 3649 private void loadGlobalProxy() { 3650 ContentResolver res = mContext.getContentResolver(); 3651 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 3652 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 3653 String exclList = Settings.Global.getString(res, 3654 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 3655 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 3656 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 3657 ProxyInfo proxyProperties; 3658 if (!TextUtils.isEmpty(pacFileUrl)) { 3659 proxyProperties = new ProxyInfo(pacFileUrl); 3660 } else { 3661 proxyProperties = new ProxyInfo(host, port, exclList); 3662 } 3663 if (!proxyProperties.isValid()) { 3664 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 3665 return; 3666 } 3667 3668 synchronized (mProxyLock) { 3669 mGlobalProxy = proxyProperties; 3670 } 3671 } 3672 } 3673 3674 public ProxyInfo getGlobalProxy() { 3675 // this information is already available as a world read/writable jvm property 3676 // so this API change wouldn't have a benifit. It also breaks the passing 3677 // of proxy info to all the JVMs. 3678 // enforceAccessPermission(); 3679 synchronized (mProxyLock) { 3680 return mGlobalProxy; 3681 } 3682 } 3683 3684 private void handleApplyDefaultProxy(ProxyInfo proxy) { 3685 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 3686 && (proxy.getPacFileUrl() == null)) { 3687 proxy = null; 3688 } 3689 synchronized (mProxyLock) { 3690 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 3691 if (mDefaultProxy == proxy) return; // catches repeated nulls 3692 if (proxy != null && !proxy.isValid()) { 3693 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 3694 return; 3695 } 3696 3697 // This call could be coming from the PacManager, containing the port of the local 3698 // proxy. If this new proxy matches the global proxy then copy this proxy to the 3699 // global (to get the correct local port), and send a broadcast. 3700 // TODO: Switch PacManager to have its own message to send back rather than 3701 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 3702 if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null) 3703 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 3704 mGlobalProxy = proxy; 3705 sendProxyBroadcast(mGlobalProxy); 3706 return; 3707 } 3708 mDefaultProxy = proxy; 3709 3710 if (mGlobalProxy != null) return; 3711 if (!mDefaultProxyDisabled) { 3712 sendProxyBroadcast(proxy); 3713 } 3714 } 3715 } 3716 3717 private void handleDeprecatedGlobalHttpProxy() { 3718 String proxy = Settings.Global.getString(mContext.getContentResolver(), 3719 Settings.Global.HTTP_PROXY); 3720 if (!TextUtils.isEmpty(proxy)) { 3721 String data[] = proxy.split(":"); 3722 if (data.length == 0) { 3723 return; 3724 } 3725 3726 String proxyHost = data[0]; 3727 int proxyPort = 8080; 3728 if (data.length > 1) { 3729 try { 3730 proxyPort = Integer.parseInt(data[1]); 3731 } catch (NumberFormatException e) { 3732 return; 3733 } 3734 } 3735 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 3736 setGlobalProxy(p); 3737 } 3738 } 3739 3740 private void sendProxyBroadcast(ProxyInfo proxy) { 3741 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 3742 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 3743 if (DBG) log("sending Proxy Broadcast for " + proxy); 3744 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 3745 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 3746 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 3747 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 3748 final long ident = Binder.clearCallingIdentity(); 3749 try { 3750 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 3751 } finally { 3752 Binder.restoreCallingIdentity(ident); 3753 } 3754 } 3755 3756 private static class SettingsObserver extends ContentObserver { 3757 private int mWhat; 3758 private Handler mHandler; 3759 SettingsObserver(Handler handler, int what) { 3760 super(handler); 3761 mHandler = handler; 3762 mWhat = what; 3763 } 3764 3765 void observe(Context context) { 3766 ContentResolver resolver = context.getContentResolver(); 3767 resolver.registerContentObserver(Settings.Global.getUriFor( 3768 Settings.Global.HTTP_PROXY), false, this); 3769 } 3770 3771 @Override 3772 public void onChange(boolean selfChange) { 3773 mHandler.obtainMessage(mWhat).sendToTarget(); 3774 } 3775 } 3776 3777 private static void log(String s) { 3778 Slog.d(TAG, s); 3779 } 3780 3781 private static void loge(String s) { 3782 Slog.e(TAG, s); 3783 } 3784 3785 int convertFeatureToNetworkType(int networkType, String feature) { 3786 int usedNetworkType = networkType; 3787 3788 if(networkType == ConnectivityManager.TYPE_MOBILE) { 3789 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) { 3790 usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS; 3791 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) { 3792 usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL; 3793 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) || 3794 TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) { 3795 usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN; 3796 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) { 3797 usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI; 3798 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) { 3799 usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA; 3800 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) { 3801 usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS; 3802 } else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) { 3803 usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS; 3804 } else { 3805 Slog.e(TAG, "Can't match any mobile netTracker!"); 3806 } 3807 } else if (networkType == ConnectivityManager.TYPE_WIFI) { 3808 if (TextUtils.equals(feature, "p2p")) { 3809 usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P; 3810 } else { 3811 Slog.e(TAG, "Can't match any wifi netTracker!"); 3812 } 3813 } else { 3814 Slog.e(TAG, "Unexpected network type"); 3815 } 3816 return usedNetworkType; 3817 } 3818 3819 private static <T> T checkNotNull(T value, String message) { 3820 if (value == null) { 3821 throw new NullPointerException(message); 3822 } 3823 return value; 3824 } 3825 3826 /** 3827 * Protect a socket from VPN routing rules. This method is used by 3828 * VpnBuilder and not available in ConnectivityManager. Permissions 3829 * are checked in Vpn class. 3830 * @hide 3831 */ 3832 @Override 3833 public boolean protectVpn(ParcelFileDescriptor socket) { 3834 throwIfLockdownEnabled(); 3835 try { 3836 int type = mActiveDefaultNetwork; 3837 int user = UserHandle.getUserId(Binder.getCallingUid()); 3838 if (ConnectivityManager.isNetworkTypeValid(type) && mNetTrackers[type] != null) { 3839 synchronized(mVpns) { 3840 mVpns.get(user).protect(socket); 3841 } 3842 return true; 3843 } 3844 } catch (Exception e) { 3845 // ignore 3846 } finally { 3847 try { 3848 socket.close(); 3849 } catch (Exception e) { 3850 // ignore 3851 } 3852 } 3853 return false; 3854 } 3855 3856 /** 3857 * Prepare for a VPN application. This method is used by VpnDialogs 3858 * and not available in ConnectivityManager. Permissions are checked 3859 * in Vpn class. 3860 * @hide 3861 */ 3862 @Override 3863 public boolean prepareVpn(String oldPackage, String newPackage) { 3864 throwIfLockdownEnabled(); 3865 int user = UserHandle.getUserId(Binder.getCallingUid()); 3866 synchronized(mVpns) { 3867 return mVpns.get(user).prepare(oldPackage, newPackage); 3868 } 3869 } 3870 3871 @Override 3872 public void markSocketAsUser(ParcelFileDescriptor socket, int uid) { 3873 enforceMarkNetworkSocketPermission(); 3874 final long token = Binder.clearCallingIdentity(); 3875 try { 3876 int mark = mNetd.getMarkForUid(uid); 3877 // Clear the mark on the socket if no mark is needed to prevent socket reuse issues 3878 if (mark == -1) { 3879 mark = 0; 3880 } 3881 NetworkUtils.markSocket(socket.getFd(), mark); 3882 } catch (RemoteException e) { 3883 } finally { 3884 Binder.restoreCallingIdentity(token); 3885 } 3886 } 3887 3888 /** 3889 * Configure a TUN interface and return its file descriptor. Parameters 3890 * are encoded and opaque to this class. This method is used by VpnBuilder 3891 * and not available in ConnectivityManager. Permissions are checked in 3892 * Vpn class. 3893 * @hide 3894 */ 3895 @Override 3896 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3897 throwIfLockdownEnabled(); 3898 int user = UserHandle.getUserId(Binder.getCallingUid()); 3899 synchronized(mVpns) { 3900 return mVpns.get(user).establish(config); 3901 } 3902 } 3903 3904 /** 3905 * Start legacy VPN, controlling native daemons as needed. Creates a 3906 * secondary thread to perform connection work, returning quickly. 3907 */ 3908 @Override 3909 public void startLegacyVpn(VpnProfile profile) { 3910 throwIfLockdownEnabled(); 3911 final LinkProperties egress = getActiveLinkProperties(); 3912 if (egress == null) { 3913 throw new IllegalStateException("Missing active network connection"); 3914 } 3915 int user = UserHandle.getUserId(Binder.getCallingUid()); 3916 synchronized(mVpns) { 3917 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3918 } 3919 } 3920 3921 /** 3922 * Return the information of the ongoing legacy VPN. This method is used 3923 * by VpnSettings and not available in ConnectivityManager. Permissions 3924 * are checked in Vpn class. 3925 * @hide 3926 */ 3927 @Override 3928 public LegacyVpnInfo getLegacyVpnInfo() { 3929 throwIfLockdownEnabled(); 3930 int user = UserHandle.getUserId(Binder.getCallingUid()); 3931 synchronized(mVpns) { 3932 return mVpns.get(user).getLegacyVpnInfo(); 3933 } 3934 } 3935 3936 /** 3937 * Returns the information of the ongoing VPN. This method is used by VpnDialogs and 3938 * not available in ConnectivityManager. 3939 * Permissions are checked in Vpn class. 3940 * @hide 3941 */ 3942 @Override 3943 public VpnConfig getVpnConfig() { 3944 int user = UserHandle.getUserId(Binder.getCallingUid()); 3945 synchronized(mVpns) { 3946 return mVpns.get(user).getVpnConfig(); 3947 } 3948 } 3949 3950 /** 3951 * Callback for VPN subsystem. Currently VPN is not adapted to the service 3952 * through NetworkStateTracker since it works differently. For example, it 3953 * needs to override DNS servers but never takes the default routes. It 3954 * relies on another data network, and it could keep existing connections 3955 * alive after reconnecting, switching between networks, or even resuming 3956 * from deep sleep. Calls from applications should be done synchronously 3957 * to avoid race conditions. As these are all hidden APIs, refactoring can 3958 * be done whenever a better abstraction is developed. 3959 */ 3960 public class VpnCallback { 3961 private VpnCallback() { 3962 } 3963 3964 public void onStateChanged(NetworkInfo info) { 3965 mHandler.obtainMessage(EVENT_VPN_STATE_CHANGED, info).sendToTarget(); 3966 } 3967 3968 public void override(String iface, List<String> dnsServers, List<String> searchDomains) { 3969 if (dnsServers == null) { 3970 restore(); 3971 return; 3972 } 3973 3974 // Convert DNS servers into addresses. 3975 List<InetAddress> addresses = new ArrayList<InetAddress>(); 3976 for (String address : dnsServers) { 3977 // Double check the addresses and remove invalid ones. 3978 try { 3979 addresses.add(InetAddress.parseNumericAddress(address)); 3980 } catch (Exception e) { 3981 // ignore 3982 } 3983 } 3984 if (addresses.isEmpty()) { 3985 restore(); 3986 return; 3987 } 3988 3989 // Concatenate search domains into a string. 3990 StringBuilder buffer = new StringBuilder(); 3991 if (searchDomains != null) { 3992 for (String domain : searchDomains) { 3993 buffer.append(domain).append(' '); 3994 } 3995 } 3996 String domains = buffer.toString().trim(); 3997 3998 // Apply DNS changes. 3999 synchronized (mDnsLock) { 4000 // TODO: Re-enable this when the netId of the VPN is known. 4001 // updateDnsLocked("VPN", netId, addresses, domains); 4002 } 4003 4004 // Temporarily disable the default proxy (not global). 4005 synchronized (mProxyLock) { 4006 mDefaultProxyDisabled = true; 4007 if (mGlobalProxy == null && mDefaultProxy != null) { 4008 sendProxyBroadcast(null); 4009 } 4010 } 4011 4012 // TODO: support proxy per network. 4013 } 4014 4015 public void restore() { 4016 synchronized (mProxyLock) { 4017 mDefaultProxyDisabled = false; 4018 if (mGlobalProxy == null && mDefaultProxy != null) { 4019 sendProxyBroadcast(mDefaultProxy); 4020 } 4021 } 4022 } 4023 4024 public void protect(ParcelFileDescriptor socket) { 4025 try { 4026 final int mark = mNetd.getMarkForProtect(); 4027 NetworkUtils.markSocket(socket.getFd(), mark); 4028 } catch (RemoteException e) { 4029 } 4030 } 4031 4032 public void setRoutes(String interfaze, List<RouteInfo> routes) { 4033 for (RouteInfo route : routes) { 4034 try { 4035 mNetd.setMarkedForwardingRoute(interfaze, route); 4036 } catch (RemoteException e) { 4037 } 4038 } 4039 } 4040 4041 public void setMarkedForwarding(String interfaze) { 4042 try { 4043 mNetd.setMarkedForwarding(interfaze); 4044 } catch (RemoteException e) { 4045 } 4046 } 4047 4048 public void clearMarkedForwarding(String interfaze) { 4049 try { 4050 mNetd.clearMarkedForwarding(interfaze); 4051 } catch (RemoteException e) { 4052 } 4053 } 4054 4055 public void addUserForwarding(String interfaze, int uid, boolean forwardDns) { 4056 int uidStart = uid * UserHandle.PER_USER_RANGE; 4057 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 4058 addUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 4059 } 4060 4061 public void clearUserForwarding(String interfaze, int uid, boolean forwardDns) { 4062 int uidStart = uid * UserHandle.PER_USER_RANGE; 4063 int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1; 4064 clearUidForwarding(interfaze, uidStart, uidEnd, forwardDns); 4065 } 4066 4067 public void addUidForwarding(String interfaze, int uidStart, int uidEnd, 4068 boolean forwardDns) { 4069 // TODO: Re-enable this when the netId of the VPN is known. 4070 // try { 4071 // mNetd.setUidRangeRoute(netId, uidStart, uidEnd, forwardDns); 4072 // } catch (RemoteException e) { 4073 // } 4074 4075 } 4076 4077 public void clearUidForwarding(String interfaze, int uidStart, int uidEnd, 4078 boolean forwardDns) { 4079 // TODO: Re-enable this when the netId of the VPN is known. 4080 // try { 4081 // mNetd.clearUidRangeRoute(interfaze, uidStart, uidEnd); 4082 // } catch (RemoteException e) { 4083 // } 4084 4085 } 4086 } 4087 4088 @Override 4089 public boolean updateLockdownVpn() { 4090 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 4091 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 4092 return false; 4093 } 4094 4095 // Tear down existing lockdown if profile was removed 4096 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 4097 if (mLockdownEnabled) { 4098 if (!mKeyStore.isUnlocked()) { 4099 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); 4100 return false; 4101 } 4102 4103 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 4104 final VpnProfile profile = VpnProfile.decode( 4105 profileName, mKeyStore.get(Credentials.VPN + profileName)); 4106 int user = UserHandle.getUserId(Binder.getCallingUid()); 4107 synchronized(mVpns) { 4108 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), 4109 profile)); 4110 } 4111 } else { 4112 setLockdownTracker(null); 4113 } 4114 4115 return true; 4116 } 4117 4118 /** 4119 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 4120 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 4121 */ 4122 private void setLockdownTracker(LockdownVpnTracker tracker) { 4123 // Shutdown any existing tracker 4124 final LockdownVpnTracker existing = mLockdownTracker; 4125 mLockdownTracker = null; 4126 if (existing != null) { 4127 existing.shutdown(); 4128 } 4129 4130 try { 4131 if (tracker != null) { 4132 mNetd.setFirewallEnabled(true); 4133 mNetd.setFirewallInterfaceRule("lo", true); 4134 mLockdownTracker = tracker; 4135 mLockdownTracker.init(); 4136 } else { 4137 mNetd.setFirewallEnabled(false); 4138 } 4139 } catch (RemoteException e) { 4140 // ignored; NMS lives inside system_server 4141 } 4142 } 4143 4144 private void throwIfLockdownEnabled() { 4145 if (mLockdownEnabled) { 4146 throw new IllegalStateException("Unavailable in lockdown mode"); 4147 } 4148 } 4149 4150 public void supplyMessenger(int networkType, Messenger messenger) { 4151 enforceConnectivityInternalPermission(); 4152 4153 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 4154 mNetTrackers[networkType].supplyMessenger(messenger); 4155 } 4156 } 4157 4158 public int findConnectionTypeForIface(String iface) { 4159 enforceConnectivityInternalPermission(); 4160 4161 if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; 4162 for (NetworkStateTracker tracker : mNetTrackers) { 4163 if (tracker != null) { 4164 LinkProperties lp = tracker.getLinkProperties(); 4165 if (lp != null && iface.equals(lp.getInterfaceName())) { 4166 return tracker.getNetworkInfo().getType(); 4167 } 4168 } 4169 } 4170 return ConnectivityManager.TYPE_NONE; 4171 } 4172 4173 /** 4174 * Have mobile data fail fast if enabled. 4175 * 4176 * @param enabled DctConstants.ENABLED/DISABLED 4177 */ 4178 private void setEnableFailFastMobileData(int enabled) { 4179 int tag; 4180 4181 if (enabled == DctConstants.ENABLED) { 4182 tag = mEnableFailFastMobileDataTag.incrementAndGet(); 4183 } else { 4184 tag = mEnableFailFastMobileDataTag.get(); 4185 } 4186 mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, 4187 enabled)); 4188 } 4189 4190 private boolean isMobileDataStateTrackerReady() { 4191 MobileDataStateTracker mdst = 4192 (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4193 return (mdst != null) && (mdst.isReady()); 4194 } 4195 4196 /** 4197 * The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE) 4198 */ 4199 4200 /** 4201 * No connection was possible to the network. 4202 * This is NOT a warm sim. 4203 */ 4204 private static final int CMP_RESULT_CODE_NO_CONNECTION = 0; 4205 4206 /** 4207 * A connection was made to the internet, all is well. 4208 * This is NOT a warm sim. 4209 */ 4210 private static final int CMP_RESULT_CODE_CONNECTABLE = 1; 4211 4212 /** 4213 * A connection was made but no dns server was available to resolve a name to address. 4214 * This is NOT a warm sim since provisioning network is supported. 4215 */ 4216 private static final int CMP_RESULT_CODE_NO_DNS = 2; 4217 4218 /** 4219 * A connection was made but could not open a TCP connection. 4220 * This is NOT a warm sim since provisioning network is supported. 4221 */ 4222 private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3; 4223 4224 /** 4225 * A connection was made but there was a redirection, we appear to be in walled garden. 4226 * This is an indication of a warm sim on a mobile network such as T-Mobile. 4227 */ 4228 private static final int CMP_RESULT_CODE_REDIRECTED = 4; 4229 4230 /** 4231 * The mobile network is a provisioning network. 4232 * This is an indication of a warm sim on a mobile network such as AT&T. 4233 */ 4234 private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5; 4235 4236 /** 4237 * The mobile network is provisioning 4238 */ 4239 private static final int CMP_RESULT_CODE_IS_PROVISIONING = 6; 4240 4241 private AtomicBoolean mIsProvisioningNetwork = new AtomicBoolean(false); 4242 private AtomicBoolean mIsStartingProvisioning = new AtomicBoolean(false); 4243 4244 private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false); 4245 4246 @Override 4247 public int checkMobileProvisioning(int suggestedTimeOutMs) { 4248 int timeOutMs = -1; 4249 if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs); 4250 enforceConnectivityInternalPermission(); 4251 4252 final long token = Binder.clearCallingIdentity(); 4253 try { 4254 timeOutMs = suggestedTimeOutMs; 4255 if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) { 4256 timeOutMs = CheckMp.MAX_TIMEOUT_MS; 4257 } 4258 4259 // Check that mobile networks are supported 4260 if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE) 4261 || !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) { 4262 if (DBG) log("checkMobileProvisioning: X no mobile network"); 4263 return timeOutMs; 4264 } 4265 4266 // If we're already checking don't do it again 4267 // TODO: Add a queue of results... 4268 if (mIsCheckingMobileProvisioning.getAndSet(true)) { 4269 if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment"); 4270 return timeOutMs; 4271 } 4272 4273 // Start off with mobile notification off 4274 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4275 4276 CheckMp checkMp = new CheckMp(mContext, this); 4277 CheckMp.CallBack cb = new CheckMp.CallBack() { 4278 @Override 4279 void onComplete(Integer result) { 4280 if (DBG) log("CheckMp.onComplete: result=" + result); 4281 NetworkInfo ni = 4282 mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo(); 4283 switch(result) { 4284 case CMP_RESULT_CODE_CONNECTABLE: 4285 case CMP_RESULT_CODE_NO_CONNECTION: 4286 case CMP_RESULT_CODE_NO_DNS: 4287 case CMP_RESULT_CODE_NO_TCP_CONNECTION: { 4288 if (DBG) log("CheckMp.onComplete: ignore, connected or no connection"); 4289 break; 4290 } 4291 case CMP_RESULT_CODE_REDIRECTED: { 4292 if (DBG) log("CheckMp.onComplete: warm sim"); 4293 String url = getMobileProvisioningUrl(); 4294 if (TextUtils.isEmpty(url)) { 4295 url = getMobileRedirectedProvisioningUrl(); 4296 } 4297 if (TextUtils.isEmpty(url) == false) { 4298 if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url); 4299 setProvNotificationVisible(true, 4300 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4301 url); 4302 } else { 4303 if (DBG) log("CheckMp.onComplete: warm (redirected), no url"); 4304 } 4305 break; 4306 } 4307 case CMP_RESULT_CODE_PROVISIONING_NETWORK: { 4308 String url = getMobileProvisioningUrl(); 4309 if (TextUtils.isEmpty(url) == false) { 4310 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url); 4311 setProvNotificationVisible(true, 4312 ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(), 4313 url); 4314 // Mark that we've got a provisioning network and 4315 // Disable Mobile Data until user actually starts provisioning. 4316 mIsProvisioningNetwork.set(true); 4317 MobileDataStateTracker mdst = (MobileDataStateTracker) 4318 mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4319 mdst.setInternalDataEnable(false); 4320 } else { 4321 if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url"); 4322 } 4323 break; 4324 } 4325 case CMP_RESULT_CODE_IS_PROVISIONING: { 4326 // FIXME: Need to know when provisioning is done. Probably we can 4327 // check the completion status if successful we're done if we 4328 // "timedout" or still connected to provisioning APN turn off data? 4329 if (DBG) log("CheckMp.onComplete: provisioning started"); 4330 mIsStartingProvisioning.set(false); 4331 break; 4332 } 4333 default: { 4334 loge("CheckMp.onComplete: ignore unexpected result=" + result); 4335 break; 4336 } 4337 } 4338 mIsCheckingMobileProvisioning.set(false); 4339 } 4340 }; 4341 CheckMp.Params params = 4342 new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb); 4343 if (DBG) log("checkMobileProvisioning: params=" + params); 4344 // TODO: Reenable when calls to the now defunct 4345 // MobileDataStateTracker.isProvisioningNetwork() are removed. 4346 // This code should be moved to the Telephony code. 4347 // checkMp.execute(params); 4348 } finally { 4349 Binder.restoreCallingIdentity(token); 4350 if (DBG) log("checkMobileProvisioning: X"); 4351 } 4352 return timeOutMs; 4353 } 4354 4355 static class CheckMp extends 4356 AsyncTask<CheckMp.Params, Void, Integer> { 4357 private static final String CHECKMP_TAG = "CheckMp"; 4358 4359 // adb shell setprop persist.checkmp.testfailures 1 to enable testing failures 4360 private static boolean mTestingFailures; 4361 4362 // Choosing 4 loops as half of them will use HTTPS and the other half HTTP 4363 private static final int MAX_LOOPS = 4; 4364 4365 // Number of milli-seconds to complete all of the retires 4366 public static final int MAX_TIMEOUT_MS = 60000; 4367 4368 // The socket should retry only 5 seconds, the default is longer 4369 private static final int SOCKET_TIMEOUT_MS = 5000; 4370 4371 // Sleep time for network errors 4372 private static final int NET_ERROR_SLEEP_SEC = 3; 4373 4374 // Sleep time for network route establishment 4375 private static final int NET_ROUTE_ESTABLISHMENT_SLEEP_SEC = 3; 4376 4377 // Short sleep time for polling :( 4378 private static final int POLLING_SLEEP_SEC = 1; 4379 4380 private Context mContext; 4381 private ConnectivityService mCs; 4382 private TelephonyManager mTm; 4383 private Params mParams; 4384 4385 /** 4386 * Parameters for AsyncTask.execute 4387 */ 4388 static class Params { 4389 private String mUrl; 4390 private long mTimeOutMs; 4391 private CallBack mCb; 4392 4393 Params(String url, long timeOutMs, CallBack cb) { 4394 mUrl = url; 4395 mTimeOutMs = timeOutMs; 4396 mCb = cb; 4397 } 4398 4399 @Override 4400 public String toString() { 4401 return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}"; 4402 } 4403 } 4404 4405 // As explained to me by Brian Carlstrom and Kenny Root, Certificates can be 4406 // issued by name or ip address, for Google its by name so when we construct 4407 // this HostnameVerifier we'll pass the original Uri and use it to verify 4408 // the host. If the host name in the original uril fails we'll test the 4409 // hostname parameter just incase things change. 4410 static class CheckMpHostnameVerifier implements HostnameVerifier { 4411 Uri mOrgUri; 4412 4413 CheckMpHostnameVerifier(Uri orgUri) { 4414 mOrgUri = orgUri; 4415 } 4416 4417 @Override 4418 public boolean verify(String hostname, SSLSession session) { 4419 HostnameVerifier hv = HttpsURLConnection.getDefaultHostnameVerifier(); 4420 String orgUriHost = mOrgUri.getHost(); 4421 boolean retVal = hv.verify(orgUriHost, session) || hv.verify(hostname, session); 4422 if (DBG) { 4423 log("isMobileOk: hostnameVerify retVal=" + retVal + " hostname=" + hostname 4424 + " orgUriHost=" + orgUriHost); 4425 } 4426 return retVal; 4427 } 4428 } 4429 4430 /** 4431 * The call back object passed in Params. onComplete will be called 4432 * on the main thread. 4433 */ 4434 abstract static class CallBack { 4435 // Called on the main thread. 4436 abstract void onComplete(Integer result); 4437 } 4438 4439 public CheckMp(Context context, ConnectivityService cs) { 4440 if (Build.IS_DEBUGGABLE) { 4441 mTestingFailures = 4442 SystemProperties.getInt("persist.checkmp.testfailures", 0) == 1; 4443 } else { 4444 mTestingFailures = false; 4445 } 4446 4447 mContext = context; 4448 mCs = cs; 4449 4450 // Setup access to TelephonyService we'll be using. 4451 mTm = (TelephonyManager) mContext.getSystemService( 4452 Context.TELEPHONY_SERVICE); 4453 } 4454 4455 /** 4456 * Get the default url to use for the test. 4457 */ 4458 public String getDefaultUrl() { 4459 // See http://go/clientsdns for usage approval 4460 String server = Settings.Global.getString(mContext.getContentResolver(), 4461 Settings.Global.CAPTIVE_PORTAL_SERVER); 4462 if (server == null) { 4463 server = "clients3.google.com"; 4464 } 4465 return "http://" + server + "/generate_204"; 4466 } 4467 4468 /** 4469 * Detect if its possible to connect to the http url. DNS based detection techniques 4470 * do not work at all hotspots. The best way to check is to perform a request to 4471 * a known address that fetches the data we expect. 4472 */ 4473 private synchronized Integer isMobileOk(Params params) { 4474 Integer result = CMP_RESULT_CODE_NO_CONNECTION; 4475 Uri orgUri = Uri.parse(params.mUrl); 4476 Random rand = new Random(); 4477 mParams = params; 4478 4479 if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) { 4480 result = CMP_RESULT_CODE_NO_CONNECTION; 4481 log("isMobileOk: X not mobile capable result=" + result); 4482 return result; 4483 } 4484 4485 if (mCs.mIsStartingProvisioning.get()) { 4486 result = CMP_RESULT_CODE_IS_PROVISIONING; 4487 log("isMobileOk: X is provisioning result=" + result); 4488 return result; 4489 } 4490 4491 // See if we've already determined we've got a provisioning connection, 4492 // if so we don't need to do anything active. 4493 MobileDataStateTracker mdstDefault = (MobileDataStateTracker) 4494 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4495 boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork(); 4496 log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning); 4497 4498 MobileDataStateTracker mdstHipri = (MobileDataStateTracker) 4499 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4500 boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork(); 4501 log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning); 4502 4503 if (isDefaultProvisioning || isHipriProvisioning) { 4504 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4505 log("isMobileOk: X default || hipri is provisioning result=" + result); 4506 return result; 4507 } 4508 4509 try { 4510 // Continue trying to connect until time has run out 4511 long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs; 4512 4513 if (!mCs.isMobileDataStateTrackerReady()) { 4514 // Wait for MobileDataStateTracker to be ready. 4515 if (DBG) log("isMobileOk: mdst is not ready"); 4516 while(SystemClock.elapsedRealtime() < endTime) { 4517 if (mCs.isMobileDataStateTrackerReady()) { 4518 // Enable fail fast as we'll do retries here and use a 4519 // hipri connection so the default connection stays active. 4520 if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data"); 4521 mCs.setEnableFailFastMobileData(DctConstants.ENABLED); 4522 break; 4523 } 4524 sleep(POLLING_SLEEP_SEC); 4525 } 4526 } 4527 4528 log("isMobileOk: start hipri url=" + params.mUrl); 4529 4530 // First wait until we can start using hipri 4531 Binder binder = new Binder(); 4532 while(SystemClock.elapsedRealtime() < endTime) { 4533 int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4534 Phone.FEATURE_ENABLE_HIPRI, binder); 4535 if ((ret == PhoneConstants.APN_ALREADY_ACTIVE) 4536 || (ret == PhoneConstants.APN_REQUEST_STARTED)) { 4537 log("isMobileOk: hipri started"); 4538 break; 4539 } 4540 if (VDBG) log("isMobileOk: hipri not started yet"); 4541 result = CMP_RESULT_CODE_NO_CONNECTION; 4542 sleep(POLLING_SLEEP_SEC); 4543 } 4544 4545 // Continue trying to connect until time has run out 4546 while(SystemClock.elapsedRealtime() < endTime) { 4547 try { 4548 // Wait for hipri to connect. 4549 // TODO: Don't poll and handle situation where hipri fails 4550 // because default is retrying. See b/9569540 4551 NetworkInfo.State state = mCs 4552 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4553 if (state != NetworkInfo.State.CONNECTED) { 4554 if (true/*VDBG*/) { 4555 log("isMobileOk: not connected ni=" + 4556 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4557 } 4558 sleep(POLLING_SLEEP_SEC); 4559 result = CMP_RESULT_CODE_NO_CONNECTION; 4560 continue; 4561 } 4562 4563 // Hipri has started check if this is a provisioning url 4564 MobileDataStateTracker mdst = (MobileDataStateTracker) 4565 mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI]; 4566 if (mdst.isProvisioningNetwork()) { 4567 result = CMP_RESULT_CODE_PROVISIONING_NETWORK; 4568 if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result); 4569 return result; 4570 } else { 4571 if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue"); 4572 } 4573 4574 // Get of the addresses associated with the url host. We need to use the 4575 // address otherwise HttpURLConnection object will use the name to get 4576 // the addresses and will try every address but that will bypass the 4577 // route to host we setup and the connection could succeed as the default 4578 // interface might be connected to the internet via wifi or other interface. 4579 InetAddress[] addresses; 4580 try { 4581 addresses = InetAddress.getAllByName(orgUri.getHost()); 4582 } catch (UnknownHostException e) { 4583 result = CMP_RESULT_CODE_NO_DNS; 4584 log("isMobileOk: X UnknownHostException result=" + result); 4585 return result; 4586 } 4587 log("isMobileOk: addresses=" + inetAddressesToString(addresses)); 4588 4589 // Get the type of addresses supported by this link 4590 LinkProperties lp = mCs.getLinkPropertiesForTypeInternal( 4591 ConnectivityManager.TYPE_MOBILE_HIPRI); 4592 boolean linkHasIpv4 = lp.hasIPv4Address(); 4593 boolean linkHasIpv6 = lp.hasIPv6Address(); 4594 log("isMobileOk: linkHasIpv4=" + linkHasIpv4 4595 + " linkHasIpv6=" + linkHasIpv6); 4596 4597 final ArrayList<InetAddress> validAddresses = 4598 new ArrayList<InetAddress>(addresses.length); 4599 4600 for (InetAddress addr : addresses) { 4601 if (((addr instanceof Inet4Address) && linkHasIpv4) || 4602 ((addr instanceof Inet6Address) && linkHasIpv6)) { 4603 validAddresses.add(addr); 4604 } 4605 } 4606 4607 if (validAddresses.size() == 0) { 4608 return CMP_RESULT_CODE_NO_CONNECTION; 4609 } 4610 4611 int addrTried = 0; 4612 while (true) { 4613 // Loop through at most MAX_LOOPS valid addresses or until 4614 // we run out of time 4615 if (addrTried++ >= MAX_LOOPS) { 4616 log("isMobileOk: too many loops tried - giving up"); 4617 break; 4618 } 4619 if (SystemClock.elapsedRealtime() >= endTime) { 4620 log("isMobileOk: spend too much time - giving up"); 4621 break; 4622 } 4623 4624 InetAddress hostAddr = validAddresses.get(rand.nextInt( 4625 validAddresses.size())); 4626 4627 // Make a route to host so we check the specific interface. 4628 if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI, 4629 hostAddr.getAddress(), null)) { 4630 // Wait a short time to be sure the route is established ?? 4631 log("isMobileOk:" 4632 + " wait to establish route to hostAddr=" + hostAddr); 4633 sleep(NET_ROUTE_ESTABLISHMENT_SLEEP_SEC); 4634 } else { 4635 log("isMobileOk:" 4636 + " could not establish route to hostAddr=" + hostAddr); 4637 // Wait a short time before the next attempt 4638 sleep(NET_ERROR_SLEEP_SEC); 4639 continue; 4640 } 4641 4642 // Rewrite the url to have numeric address to use the specific route 4643 // using http for half the attempts and https for the other half. 4644 // Doing https first and http second as on a redirected walled garden 4645 // such as t-mobile uses we get a SocketTimeoutException: "SSL 4646 // handshake timed out" which we declare as 4647 // CMP_RESULT_CODE_NO_TCP_CONNECTION. We could change this, but by 4648 // having http second we will be using logic used for some time. 4649 URL newUrl; 4650 String scheme = (addrTried <= (MAX_LOOPS/2)) ? "https" : "http"; 4651 newUrl = new URL(scheme, hostAddr.getHostAddress(), 4652 orgUri.getPath()); 4653 log("isMobileOk: newUrl=" + newUrl); 4654 4655 HttpURLConnection urlConn = null; 4656 try { 4657 // Open the connection set the request headers and get the response 4658 urlConn = (HttpURLConnection)newUrl.openConnection( 4659 java.net.Proxy.NO_PROXY); 4660 if (scheme.equals("https")) { 4661 ((HttpsURLConnection)urlConn).setHostnameVerifier( 4662 new CheckMpHostnameVerifier(orgUri)); 4663 } 4664 urlConn.setInstanceFollowRedirects(false); 4665 urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS); 4666 urlConn.setReadTimeout(SOCKET_TIMEOUT_MS); 4667 urlConn.setUseCaches(false); 4668 urlConn.setAllowUserInteraction(false); 4669 // Set the "Connection" to "Close" as by default "Keep-Alive" 4670 // is used which is useless in this case. 4671 urlConn.setRequestProperty("Connection", "close"); 4672 int responseCode = urlConn.getResponseCode(); 4673 4674 // For debug display the headers 4675 Map<String, List<String>> headers = urlConn.getHeaderFields(); 4676 log("isMobileOk: headers=" + headers); 4677 4678 // Close the connection 4679 urlConn.disconnect(); 4680 urlConn = null; 4681 4682 if (mTestingFailures) { 4683 // Pretend no connection, this tests using http and https 4684 result = CMP_RESULT_CODE_NO_CONNECTION; 4685 log("isMobileOk: TESTING_FAILURES, pretend no connction"); 4686 continue; 4687 } 4688 4689 if (responseCode == 204) { 4690 // Return 4691 result = CMP_RESULT_CODE_CONNECTABLE; 4692 log("isMobileOk: X got expected responseCode=" + responseCode 4693 + " result=" + result); 4694 return result; 4695 } else { 4696 // Retry to be sure this was redirected, we've gotten 4697 // occasions where a server returned 200 even though 4698 // the device didn't have a "warm" sim. 4699 log("isMobileOk: not expected responseCode=" + responseCode); 4700 // TODO - it would be nice in the single-address case to do 4701 // another DNS resolve here, but flushing the cache is a bit 4702 // heavy-handed. 4703 result = CMP_RESULT_CODE_REDIRECTED; 4704 } 4705 } catch (Exception e) { 4706 log("isMobileOk: HttpURLConnection Exception" + e); 4707 result = CMP_RESULT_CODE_NO_TCP_CONNECTION; 4708 if (urlConn != null) { 4709 urlConn.disconnect(); 4710 urlConn = null; 4711 } 4712 sleep(NET_ERROR_SLEEP_SEC); 4713 continue; 4714 } 4715 } 4716 log("isMobileOk: X loops|timed out result=" + result); 4717 return result; 4718 } catch (Exception e) { 4719 log("isMobileOk: Exception e=" + e); 4720 continue; 4721 } 4722 } 4723 log("isMobileOk: timed out"); 4724 } finally { 4725 log("isMobileOk: F stop hipri"); 4726 mCs.setEnableFailFastMobileData(DctConstants.DISABLED); 4727 mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE, 4728 Phone.FEATURE_ENABLE_HIPRI); 4729 4730 // Wait for hipri to disconnect. 4731 long endTime = SystemClock.elapsedRealtime() + 5000; 4732 4733 while(SystemClock.elapsedRealtime() < endTime) { 4734 NetworkInfo.State state = mCs 4735 .getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState(); 4736 if (state != NetworkInfo.State.DISCONNECTED) { 4737 if (VDBG) { 4738 log("isMobileOk: connected ni=" + 4739 mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI)); 4740 } 4741 sleep(POLLING_SLEEP_SEC); 4742 continue; 4743 } 4744 } 4745 4746 log("isMobileOk: X result=" + result); 4747 } 4748 return result; 4749 } 4750 4751 @Override 4752 protected Integer doInBackground(Params... params) { 4753 return isMobileOk(params[0]); 4754 } 4755 4756 @Override 4757 protected void onPostExecute(Integer result) { 4758 log("onPostExecute: result=" + result); 4759 if ((mParams != null) && (mParams.mCb != null)) { 4760 mParams.mCb.onComplete(result); 4761 } 4762 } 4763 4764 private String inetAddressesToString(InetAddress[] addresses) { 4765 StringBuffer sb = new StringBuffer(); 4766 boolean firstTime = true; 4767 for(InetAddress addr : addresses) { 4768 if (firstTime) { 4769 firstTime = false; 4770 } else { 4771 sb.append(","); 4772 } 4773 sb.append(addr); 4774 } 4775 return sb.toString(); 4776 } 4777 4778 private void printNetworkInfo() { 4779 boolean hasIccCard = mTm.hasIccCard(); 4780 int simState = mTm.getSimState(); 4781 log("hasIccCard=" + hasIccCard 4782 + " simState=" + simState); 4783 NetworkInfo[] ni = mCs.getAllNetworkInfo(); 4784 if (ni != null) { 4785 log("ni.length=" + ni.length); 4786 for (NetworkInfo netInfo: ni) { 4787 log("netInfo=" + netInfo.toString()); 4788 } 4789 } else { 4790 log("no network info ni=null"); 4791 } 4792 } 4793 4794 /** 4795 * Sleep for a few seconds then return. 4796 * @param seconds 4797 */ 4798 private static void sleep(int seconds) { 4799 long stopTime = System.nanoTime() + (seconds * 1000000000); 4800 long sleepTime; 4801 while ((sleepTime = stopTime - System.nanoTime()) > 0) { 4802 try { 4803 Thread.sleep(sleepTime / 1000000); 4804 } catch (InterruptedException ignored) { 4805 } 4806 } 4807 } 4808 4809 private static void log(String s) { 4810 Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s); 4811 } 4812 } 4813 4814 // TODO: Move to ConnectivityManager and make public? 4815 private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION = 4816 "com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION"; 4817 4818 private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() { 4819 @Override 4820 public void onReceive(Context context, Intent intent) { 4821 if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) { 4822 handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL")); 4823 } 4824 } 4825 }; 4826 4827 private void handleMobileProvisioningAction(String url) { 4828 // Mark notification as not visible 4829 setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null); 4830 4831 // If provisioning network handle as a special case, 4832 // otherwise launch browser with the intent directly. 4833 if (mIsProvisioningNetwork.get()) { 4834 if (DBG) log("handleMobileProvisioningAction: on prov network enable then launch"); 4835// mIsStartingProvisioning.set(true); 4836// MobileDataStateTracker mdst = (MobileDataStateTracker) 4837// mNetTrackers[ConnectivityManager.TYPE_MOBILE]; 4838// mdst.setEnableFailFastMobileData(DctConstants.ENABLED); 4839// mdst.enableMobileProvisioning(url); 4840 } else { 4841 if (DBG) log("handleMobileProvisioningAction: not prov network"); 4842 // Check for apps that can handle provisioning first 4843 Intent provisioningIntent = new Intent(TelephonyIntents.ACTION_CARRIER_SETUP); 4844 provisioningIntent.addCategory(TelephonyIntents.CATEGORY_MCCMNC_PREFIX 4845 + mTelephonyManager.getSimOperator()); 4846 if (mContext.getPackageManager().resolveActivity(provisioningIntent, 0 /* flags */) 4847 != null) { 4848 provisioningIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4849 Intent.FLAG_ACTIVITY_NEW_TASK); 4850 mContext.startActivity(provisioningIntent); 4851 } else { 4852 // If no apps exist, use standard URL ACTION_VIEW method 4853 Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN, 4854 Intent.CATEGORY_APP_BROWSER); 4855 newIntent.setData(Uri.parse(url)); 4856 newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4857 Intent.FLAG_ACTIVITY_NEW_TASK); 4858 try { 4859 mContext.startActivity(newIntent); 4860 } catch (ActivityNotFoundException e) { 4861 loge("handleMobileProvisioningAction: startActivity failed" + e); 4862 } 4863 } 4864 } 4865 } 4866 4867 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 4868 private volatile boolean mIsNotificationVisible = false; 4869 4870 private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo, 4871 String url) { 4872 if (DBG) { 4873 log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType 4874 + " extraInfo=" + extraInfo + " url=" + url); 4875 } 4876 4877 Resources r = Resources.getSystem(); 4878 NotificationManager notificationManager = (NotificationManager) mContext 4879 .getSystemService(Context.NOTIFICATION_SERVICE); 4880 4881 if (visible) { 4882 CharSequence title; 4883 CharSequence details; 4884 int icon; 4885 Intent intent; 4886 Notification notification = new Notification(); 4887 switch (networkType) { 4888 case ConnectivityManager.TYPE_WIFI: 4889 title = r.getString(R.string.wifi_available_sign_in, 0); 4890 details = r.getString(R.string.network_available_sign_in_detailed, 4891 extraInfo); 4892 icon = R.drawable.stat_notify_wifi_in_range; 4893 intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 4894 intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | 4895 Intent.FLAG_ACTIVITY_NEW_TASK); 4896 notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0); 4897 break; 4898 case ConnectivityManager.TYPE_MOBILE: 4899 case ConnectivityManager.TYPE_MOBILE_HIPRI: 4900 title = r.getString(R.string.network_available_sign_in, 0); 4901 // TODO: Change this to pull from NetworkInfo once a printable 4902 // name has been added to it 4903 details = mTelephonyManager.getNetworkOperatorName(); 4904 icon = R.drawable.stat_notify_rssi_in_range; 4905 intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION); 4906 intent.putExtra("EXTRA_URL", url); 4907 intent.setFlags(0); 4908 notification.contentIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 4909 break; 4910 default: 4911 title = r.getString(R.string.network_available_sign_in, 0); 4912 details = r.getString(R.string.network_available_sign_in_detailed, 4913 extraInfo); 4914 icon = R.drawable.stat_notify_rssi_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 } 4921 4922 notification.when = 0; 4923 notification.icon = icon; 4924 notification.flags = Notification.FLAG_AUTO_CANCEL; 4925 notification.tickerText = title; 4926 notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); 4927 4928 try { 4929 notificationManager.notify(NOTIFICATION_ID, networkType, notification); 4930 } catch (NullPointerException npe) { 4931 loge("setNotificaitionVisible: visible notificationManager npe=" + npe); 4932 npe.printStackTrace(); 4933 } 4934 } else { 4935 try { 4936 notificationManager.cancel(NOTIFICATION_ID, networkType); 4937 } catch (NullPointerException npe) { 4938 loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); 4939 npe.printStackTrace(); 4940 } 4941 } 4942 mIsNotificationVisible = visible; 4943 } 4944 4945 /** Location to an updatable file listing carrier provisioning urls. 4946 * An example: 4947 * 4948 * <?xml version="1.0" encoding="utf-8"?> 4949 * <provisioningUrls> 4950 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 4951 * <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl> 4952 * </provisioningUrls> 4953 */ 4954 private static final String PROVISIONING_URL_PATH = 4955 "/data/misc/radio/provisioning_urls.xml"; 4956 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 4957 4958 /** XML tag for root element. */ 4959 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 4960 /** XML tag for individual url */ 4961 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 4962 /** XML tag for redirected url */ 4963 private static final String TAG_REDIRECTED_URL = "redirectedUrl"; 4964 /** XML attribute for mcc */ 4965 private static final String ATTR_MCC = "mcc"; 4966 /** XML attribute for mnc */ 4967 private static final String ATTR_MNC = "mnc"; 4968 4969 private static final int REDIRECTED_PROVISIONING = 1; 4970 private static final int PROVISIONING = 2; 4971 4972 private String getProvisioningUrlBaseFromFile(int type) { 4973 FileReader fileReader = null; 4974 XmlPullParser parser = null; 4975 Configuration config = mContext.getResources().getConfiguration(); 4976 String tagType; 4977 4978 switch (type) { 4979 case PROVISIONING: 4980 tagType = TAG_PROVISIONING_URL; 4981 break; 4982 case REDIRECTED_PROVISIONING: 4983 tagType = TAG_REDIRECTED_URL; 4984 break; 4985 default: 4986 throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + 4987 type); 4988 } 4989 4990 try { 4991 fileReader = new FileReader(mProvisioningUrlFile); 4992 parser = Xml.newPullParser(); 4993 parser.setInput(fileReader); 4994 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 4995 4996 while (true) { 4997 XmlUtils.nextElement(parser); 4998 4999 String element = parser.getName(); 5000 if (element == null) break; 5001 5002 if (element.equals(tagType)) { 5003 String mcc = parser.getAttributeValue(null, ATTR_MCC); 5004 try { 5005 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 5006 String mnc = parser.getAttributeValue(null, ATTR_MNC); 5007 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 5008 parser.next(); 5009 if (parser.getEventType() == XmlPullParser.TEXT) { 5010 return parser.getText(); 5011 } 5012 } 5013 } 5014 } catch (NumberFormatException e) { 5015 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 5016 } 5017 } 5018 } 5019 return null; 5020 } catch (FileNotFoundException e) { 5021 loge("Carrier Provisioning Urls file not found"); 5022 } catch (XmlPullParserException e) { 5023 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 5024 } catch (IOException e) { 5025 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 5026 } finally { 5027 if (fileReader != null) { 5028 try { 5029 fileReader.close(); 5030 } catch (IOException e) {} 5031 } 5032 } 5033 return null; 5034 } 5035 5036 @Override 5037 public String getMobileRedirectedProvisioningUrl() { 5038 enforceConnectivityInternalPermission(); 5039 String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); 5040 if (TextUtils.isEmpty(url)) { 5041 url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); 5042 } 5043 return url; 5044 } 5045 5046 @Override 5047 public String getMobileProvisioningUrl() { 5048 enforceConnectivityInternalPermission(); 5049 String url = getProvisioningUrlBaseFromFile(PROVISIONING); 5050 if (TextUtils.isEmpty(url)) { 5051 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 5052 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 5053 } else { 5054 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 5055 } 5056 // populate the iccid, imei and phone number in the provisioning url. 5057 if (!TextUtils.isEmpty(url)) { 5058 String phoneNumber = mTelephonyManager.getLine1Number(); 5059 if (TextUtils.isEmpty(phoneNumber)) { 5060 phoneNumber = "0000000000"; 5061 } 5062 url = String.format(url, 5063 mTelephonyManager.getSimSerialNumber() /* ICCID */, 5064 mTelephonyManager.getDeviceId() /* IMEI */, 5065 phoneNumber /* Phone numer */); 5066 } 5067 5068 return url; 5069 } 5070 5071 @Override 5072 public void setProvisioningNotificationVisible(boolean visible, int networkType, 5073 String extraInfo, String url) { 5074 enforceConnectivityInternalPermission(); 5075 setProvNotificationVisible(visible, networkType, extraInfo, url); 5076 } 5077 5078 @Override 5079 public void setAirplaneMode(boolean enable) { 5080 enforceConnectivityInternalPermission(); 5081 final long ident = Binder.clearCallingIdentity(); 5082 try { 5083 final ContentResolver cr = mContext.getContentResolver(); 5084 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 5085 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 5086 intent.putExtra("state", enable); 5087 mContext.sendBroadcast(intent); 5088 } finally { 5089 Binder.restoreCallingIdentity(ident); 5090 } 5091 } 5092 5093 private void onUserStart(int userId) { 5094 synchronized(mVpns) { 5095 Vpn userVpn = mVpns.get(userId); 5096 if (userVpn != null) { 5097 loge("Starting user already has a VPN"); 5098 return; 5099 } 5100 userVpn = new Vpn(mContext, mVpnCallback, mNetd, this, userId); 5101 mVpns.put(userId, userVpn); 5102 userVpn.startMonitoring(mContext, mTrackerHandler); 5103 } 5104 } 5105 5106 private void onUserStop(int userId) { 5107 synchronized(mVpns) { 5108 Vpn userVpn = mVpns.get(userId); 5109 if (userVpn == null) { 5110 loge("Stopping user has no VPN"); 5111 return; 5112 } 5113 mVpns.delete(userId); 5114 } 5115 } 5116 5117 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 5118 @Override 5119 public void onReceive(Context context, Intent intent) { 5120 final String action = intent.getAction(); 5121 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 5122 if (userId == UserHandle.USER_NULL) return; 5123 5124 if (Intent.ACTION_USER_STARTING.equals(action)) { 5125 onUserStart(userId); 5126 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 5127 onUserStop(userId); 5128 } 5129 } 5130 }; 5131 5132 @Override 5133 public LinkQualityInfo getLinkQualityInfo(int networkType) { 5134 enforceAccessPermission(); 5135 if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { 5136 return mNetTrackers[networkType].getLinkQualityInfo(); 5137 } else { 5138 return null; 5139 } 5140 } 5141 5142 @Override 5143 public LinkQualityInfo getActiveLinkQualityInfo() { 5144 enforceAccessPermission(); 5145 if (isNetworkTypeValid(mActiveDefaultNetwork) && 5146 mNetTrackers[mActiveDefaultNetwork] != null) { 5147 return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); 5148 } else { 5149 return null; 5150 } 5151 } 5152 5153 @Override 5154 public LinkQualityInfo[] getAllLinkQualityInfo() { 5155 enforceAccessPermission(); 5156 final ArrayList<LinkQualityInfo> result = Lists.newArrayList(); 5157 for (NetworkStateTracker tracker : mNetTrackers) { 5158 if (tracker != null) { 5159 LinkQualityInfo li = tracker.getLinkQualityInfo(); 5160 if (li != null) { 5161 result.add(li); 5162 } 5163 } 5164 } 5165 5166 return result.toArray(new LinkQualityInfo[result.size()]); 5167 } 5168 5169 /* Infrastructure for network sampling */ 5170 5171 private void handleNetworkSamplingTimeout() { 5172 5173 log("Sampling interval elapsed, updating statistics .."); 5174 5175 // initialize list of interfaces .. 5176 Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample = 5177 new HashMap<String, SamplingDataTracker.SamplingSnapshot>(); 5178 for (NetworkStateTracker tracker : mNetTrackers) { 5179 if (tracker != null) { 5180 String ifaceName = tracker.getNetworkInterfaceName(); 5181 if (ifaceName != null) { 5182 mapIfaceToSample.put(ifaceName, null); 5183 } 5184 } 5185 } 5186 5187 // Read samples for all interfaces 5188 SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); 5189 5190 // process samples for all networks 5191 for (NetworkStateTracker tracker : mNetTrackers) { 5192 if (tracker != null) { 5193 String ifaceName = tracker.getNetworkInterfaceName(); 5194 SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); 5195 if (ss != null) { 5196 // end the previous sampling cycle 5197 tracker.stopSampling(ss); 5198 // start a new sampling cycle .. 5199 tracker.startSampling(ss); 5200 } 5201 } 5202 } 5203 5204 log("Done."); 5205 5206 int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), 5207 Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, 5208 DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); 5209 5210 if (DBG) log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); 5211 5212 setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); 5213 } 5214 5215 void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { 5216 long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; 5217 mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, wakeupTime, intent); 5218 } 5219 5220 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 5221 new HashMap<Messenger, NetworkFactoryInfo>(); 5222 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 5223 new HashMap<NetworkRequest, NetworkRequestInfo>(); 5224 5225 private static class NetworkFactoryInfo { 5226 public final String name; 5227 public final Messenger messenger; 5228 public final AsyncChannel asyncChannel; 5229 5230 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 5231 this.name = name; 5232 this.messenger = messenger; 5233 this.asyncChannel = asyncChannel; 5234 } 5235 } 5236 5237 private class NetworkRequestInfo implements IBinder.DeathRecipient { 5238 static final boolean REQUEST = true; 5239 static final boolean LISTEN = false; 5240 5241 final NetworkRequest request; 5242 IBinder mBinder; 5243 final int mPid; 5244 final int mUid; 5245 final Messenger messenger; 5246 final boolean isRequest; 5247 5248 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { 5249 super(); 5250 messenger = m; 5251 request = r; 5252 mBinder = binder; 5253 mPid = getCallingPid(); 5254 mUid = getCallingUid(); 5255 this.isRequest = isRequest; 5256 5257 try { 5258 mBinder.linkToDeath(this, 0); 5259 } catch (RemoteException e) { 5260 binderDied(); 5261 } 5262 } 5263 5264 void unlinkDeathRecipient() { 5265 mBinder.unlinkToDeath(this, 0); 5266 } 5267 5268 public void binderDied() { 5269 log("ConnectivityService NetworkRequestInfo binderDied(" + 5270 request + ", " + mBinder + ")"); 5271 releaseNetworkRequest(request); 5272 } 5273 5274 public String toString() { 5275 return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + 5276 mPid + " for " + request; 5277 } 5278 } 5279 5280 @Override 5281 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 5282 Messenger messenger, int timeoutSec, IBinder binder) { 5283 if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) 5284 == false) { 5285 enforceConnectivityInternalPermission(); 5286 } else { 5287 enforceChangePermission(); 5288 } 5289 5290 if (timeoutSec < 0 || timeoutSec > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_SEC) { 5291 throw new IllegalArgumentException("Bad timeout specified"); 5292 } 5293 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 5294 networkCapabilities), false, nextNetworkRequestId()); 5295 if (DBG) log("requestNetwork for " + networkRequest); 5296 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 5297 NetworkRequestInfo.REQUEST); 5298 5299 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 5300 if (timeoutSec > 0) { 5301 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 5302 nri), timeoutSec * 1000); 5303 } 5304 return networkRequest; 5305 } 5306 5307 @Override 5308 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 5309 PendingIntent operation) { 5310 // TODO 5311 return null; 5312 } 5313 5314 @Override 5315 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 5316 Messenger messenger, IBinder binder) { 5317 enforceAccessPermission(); 5318 5319 NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( 5320 networkCapabilities), false, nextNetworkRequestId()); 5321 if (DBG) log("listenForNetwork for " + networkRequest); 5322 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 5323 NetworkRequestInfo.LISTEN); 5324 5325 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 5326 return networkRequest; 5327 } 5328 5329 @Override 5330 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 5331 PendingIntent operation) { 5332 } 5333 5334 @Override 5335 public void releaseNetworkRequest(NetworkRequest networkRequest) { 5336 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, 5337 networkRequest)); 5338 } 5339 5340 @Override 5341 public void registerNetworkFactory(Messenger messenger, String name) { 5342 enforceConnectivityInternalPermission(); 5343 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 5344 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 5345 } 5346 5347 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 5348 if (VDBG) log("Got NetworkFactory Messenger for " + nfi.name); 5349 mNetworkFactoryInfos.put(nfi.messenger, nfi); 5350 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 5351 } 5352 5353 @Override 5354 public void unregisterNetworkFactory(Messenger messenger) { 5355 enforceConnectivityInternalPermission(); 5356 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 5357 } 5358 5359 private void handleUnregisterNetworkFactory(Messenger messenger) { 5360 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 5361 if (nfi == null) { 5362 if (VDBG) log("Failed to find Messenger in unregisterNetworkFactory"); 5363 return; 5364 } 5365 if (VDBG) log("unregisterNetworkFactory for " + nfi.name); 5366 } 5367 5368 /** 5369 * NetworkAgentInfo supporting a request by requestId. 5370 * These have already been vetted (their Capabilities satisfy the request) 5371 * and the are the highest scored network available. 5372 * the are keyed off the Requests requestId. 5373 */ 5374 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 5375 new SparseArray<NetworkAgentInfo>(); 5376 5377 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 5378 new SparseArray<NetworkAgentInfo>(); 5379 5380 // NetworkAgentInfo keyed off its connecting messenger 5381 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 5382 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 5383 new HashMap<Messenger, NetworkAgentInfo>(); 5384 5385 private final NetworkRequest mDefaultRequest; 5386 5387 public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 5388 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 5389 int currentScore) { 5390 enforceConnectivityInternalPermission(); 5391 5392 NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), nextNetId(), 5393 new NetworkInfo(networkInfo), new LinkProperties(linkProperties), 5394 new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler); 5395 5396 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 5397 } 5398 5399 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 5400 if (VDBG) log("Got NetworkAgent Messenger"); 5401 mNetworkAgentInfos.put(na.messenger, na); 5402 try { 5403 mNetworkAgentInfoForType[na.networkInfo.getType()].add(na); 5404 } catch (NullPointerException e) { 5405 loge("registered NetworkAgent for unsupported type: " + na); 5406 } 5407 mNetworkForNetId.put(na.network.netId, na); 5408 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 5409 NetworkInfo networkInfo = na.networkInfo; 5410 na.networkInfo = null; 5411 updateNetworkInfo(na, networkInfo); 5412 } 5413 5414 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 5415 LinkProperties newLp = networkAgent.linkProperties; 5416 int netId = networkAgent.network.netId; 5417 5418 updateInterfaces(newLp, oldLp, netId); 5419 updateMtu(newLp, oldLp); 5420 // TODO - figure out what to do for clat 5421// for (LinkProperties lp : newLp.getStackedLinks()) { 5422// updateMtu(lp, null); 5423// } 5424 updateRoutes(newLp, oldLp, netId); 5425 updateDnses(newLp, oldLp, netId); 5426 updateClat(newLp, oldLp, networkAgent); 5427 } 5428 5429 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo na) { 5430 // Update 464xlat state. 5431 if (mClat.requiresClat(na)) { 5432 5433 // If the connection was previously using clat, but is not using it now, stop the clat 5434 // daemon. Normally, this happens automatically when the connection disconnects, but if 5435 // the disconnect is not reported, or if the connection's LinkProperties changed for 5436 // some other reason (e.g., handoff changes the IP addresses on the link), it would 5437 // still be running. If it's not running, then stopping it is a no-op. 5438 if (Nat464Xlat.isRunningClat(oldLp) && !Nat464Xlat.isRunningClat(newLp)) { 5439 mClat.stopClat(); 5440 } 5441 // If the link requires clat to be running, then start the daemon now. 5442 if (newLp != null && na.networkInfo.isConnected()) { 5443 mClat.startClat(na); 5444 } else { 5445 mClat.stopClat(); 5446 } 5447 } 5448 } 5449 5450 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 5451 CompareResult<String> interfaceDiff = new CompareResult<String>(); 5452 if (oldLp != null) { 5453 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 5454 } else if (newLp != null) { 5455 interfaceDiff.added = newLp.getAllInterfaceNames(); 5456 } 5457 for (String iface : interfaceDiff.added) { 5458 try { 5459 mNetd.addInterfaceToNetwork(iface, netId); 5460 } catch (Exception e) { 5461 loge("Exception adding interface: " + e); 5462 } 5463 } 5464 for (String iface : interfaceDiff.removed) { 5465 try { 5466 mNetd.removeInterfaceFromNetwork(iface, netId); 5467 } catch (Exception e) { 5468 loge("Exception removing interface: " + e); 5469 } 5470 } 5471 } 5472 5473 private void updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 5474 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 5475 if (oldLp != null) { 5476 routeDiff = oldLp.compareAllRoutes(newLp); 5477 } else if (newLp != null) { 5478 routeDiff.added = newLp.getAllRoutes(); 5479 } 5480 5481 // add routes before removing old in case it helps with continuous connectivity 5482 5483 // do this twice, adding non-nexthop routes first, then routes they are dependent on 5484 for (RouteInfo route : routeDiff.added) { 5485 if (route.hasGateway()) continue; 5486 try { 5487 mNetd.addRoute(netId, route); 5488 } catch (Exception e) { 5489 loge("Exception in addRoute for non-gateway: " + e); 5490 } 5491 } 5492 for (RouteInfo route : routeDiff.added) { 5493 if (route.hasGateway() == false) continue; 5494 try { 5495 mNetd.addRoute(netId, route); 5496 } catch (Exception e) { 5497 loge("Exception in addRoute for gateway: " + e); 5498 } 5499 } 5500 5501 for (RouteInfo route : routeDiff.removed) { 5502 try { 5503 mNetd.removeRoute(netId, route); 5504 } catch (Exception e) { 5505 loge("Exception in removeRoute: " + e); 5506 } 5507 } 5508 } 5509 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId) { 5510 if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { 5511 Collection<InetAddress> dnses = newLp.getDnses(); 5512 if (dnses.size() == 0 && mDefaultDns != null) { 5513 dnses = new ArrayList(); 5514 dnses.add(mDefaultDns); 5515 if (DBG) { 5516 loge("no dns provided for netId " + netId + ", so using defaults"); 5517 } 5518 } 5519 try { 5520 mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), 5521 newLp.getDomains()); 5522 } catch (Exception e) { 5523 loge("Exception in setDnsServersForNetwork: " + e); 5524 } 5525 NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); 5526 if (defaultNai != null && defaultNai.network.netId == netId) { 5527 setDefaultDnsSystemProperties(dnses); 5528 } 5529 } 5530 } 5531 5532 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 5533 int last = 0; 5534 for (InetAddress dns : dnses) { 5535 ++last; 5536 String key = "net.dns" + last; 5537 String value = dns.getHostAddress(); 5538 SystemProperties.set(key, value); 5539 } 5540 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 5541 String key = "net.dns" + i; 5542 SystemProperties.set(key, ""); 5543 } 5544 mNumDnsEntries = last; 5545 } 5546 5547 5548 private void updateCapabilities(NetworkAgentInfo networkAgent, 5549 NetworkCapabilities networkCapabilities) { 5550 // TODO - what else here? Verify still satisfies everybody? 5551 // Check if satisfies somebody new? call callbacks? 5552 networkAgent.networkCapabilities = networkCapabilities; 5553 } 5554 5555 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 5556 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 5557 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 5558 nfi.asyncChannel.sendMessage(NetworkFactoryProtocol.CMD_REQUEST_NETWORK, score, 0, networkRequest); 5559 } 5560 } 5561 5562 private void callCallbackForRequest(NetworkRequestInfo nri, 5563 NetworkAgentInfo networkAgent, int notificationType) { 5564 if (nri.messenger == null) return; // Default request has no msgr 5565 Object o; 5566 int a1 = 0; 5567 int a2 = 0; 5568 switch (notificationType) { 5569 case ConnectivityManager.CALLBACK_LOSING: 5570 a1 = 30; // TODO - read this from NetworkMonitor 5571 // fall through 5572 case ConnectivityManager.CALLBACK_PRECHECK: 5573 case ConnectivityManager.CALLBACK_AVAILABLE: 5574 case ConnectivityManager.CALLBACK_LOST: 5575 case ConnectivityManager.CALLBACK_CAP_CHANGED: 5576 case ConnectivityManager.CALLBACK_IP_CHANGED: { 5577 o = new NetworkRequest(nri.request); 5578 a2 = networkAgent.network.netId; 5579 break; 5580 } 5581 case ConnectivityManager.CALLBACK_UNAVAIL: 5582 case ConnectivityManager.CALLBACK_RELEASED: { 5583 o = new NetworkRequest(nri.request); 5584 break; 5585 } 5586 default: { 5587 loge("Unknown notificationType " + notificationType); 5588 return; 5589 } 5590 } 5591 Message msg = Message.obtain(); 5592 msg.arg1 = a1; 5593 msg.arg2 = a2; 5594 msg.obj = o; 5595 msg.what = notificationType; 5596 try { 5597 if (VDBG) log("sending notification " + notificationType + " for " + nri.request); 5598 nri.messenger.send(msg); 5599 } catch (RemoteException e) { 5600 // may occur naturally in the race of binder death. 5601 loge("RemoteException caught trying to send a callback msg for " + nri.request); 5602 } 5603 } 5604 5605 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 5606 if (oldNetwork == null) { 5607 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 5608 return; 5609 } 5610 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 5611 if (DBG) { 5612 if (oldNetwork.networkRequests.size() != 0) { 5613 loge("Dead network still had " + oldNetwork.networkRequests.size() + " requests"); 5614 } 5615 } 5616 oldNetwork.asyncChannel.disconnect(); 5617 } 5618 5619 private void handleConnectionValidated(NetworkAgentInfo newNetwork) { 5620 if (newNetwork == null) { 5621 loge("Unknown NetworkAgentInfo in handleConnectionValidated"); 5622 return; 5623 } 5624 boolean keep = false; 5625 boolean isNewDefault = false; 5626 if (DBG) log("handleConnectionValidated for "+newNetwork.name()); 5627 // check if any NetworkRequest wants this NetworkAgent 5628 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 5629 if (VDBG) log(" new Network has: " + newNetwork.networkCapabilities); 5630 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 5631 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 5632 if (newNetwork == currentNetwork) { 5633 if (VDBG) log("Network " + newNetwork.name() + " was already satisfying" + 5634 " request " + nri.request.requestId + ". No change."); 5635 keep = true; 5636 continue; 5637 } 5638 5639 // check if it satisfies the NetworkCapabilities 5640 if (VDBG) log(" checking if request is satisfied: " + nri.request); 5641 if (nri.request.networkCapabilities.satisfiedByNetworkCapabilities( 5642 newNetwork.networkCapabilities)) { 5643 // next check if it's better than any current network we're using for 5644 // this request 5645 if (VDBG) { 5646 log("currentScore = " + 5647 (currentNetwork != null ? currentNetwork.currentScore : 0) + 5648 ", newScore = " + newNetwork.currentScore); 5649 } 5650 if (currentNetwork == null || 5651 currentNetwork.currentScore < newNetwork.currentScore) { 5652 if (currentNetwork != null) { 5653 if (VDBG) log(" accepting network in place of " + currentNetwork.name()); 5654 currentNetwork.networkRequests.remove(nri.request.requestId); 5655 currentNetwork.networkLingered.add(nri.request); 5656 affectedNetworks.add(currentNetwork); 5657 } else { 5658 if (VDBG) log(" accepting network in place of null"); 5659 } 5660 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 5661 newNetwork.networkRequests.put(nri.request.requestId, nri.request); 5662 keep = true; 5663 // TODO - this could get expensive if we have alot of requests for this 5664 // network. Think about if there is a way to reduce this. Push 5665 // netid->request mapping to each factory? 5666 sendUpdatedScoreToFactories(nri.request, newNetwork.currentScore); 5667 if (mDefaultRequest.requestId == nri.request.requestId) { 5668 isNewDefault = true; 5669 updateActiveDefaultNetwork(newNetwork); 5670 if (newNetwork.linkProperties != null) { 5671 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnses()); 5672 } else { 5673 setDefaultDnsSystemProperties(new ArrayList<InetAddress>()); 5674 } 5675 } 5676 } 5677 } 5678 } 5679 for (NetworkAgentInfo nai : affectedNetworks) { 5680 boolean teardown = true; 5681 for (int i = 0; i < nai.networkRequests.size(); i++) { 5682 NetworkRequest nr = nai.networkRequests.valueAt(i); 5683 try { 5684 if (mNetworkRequests.get(nr).isRequest) { 5685 teardown = false; 5686 } 5687 } catch (Exception e) { 5688 loge("Request " + nr + " not found in mNetworkRequests."); 5689 loge(" it came from request list of " + nai.name()); 5690 } 5691 } 5692 if (teardown) { 5693 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 5694 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 5695 } else { 5696 // not going to linger, so kill the list of linger networks.. only 5697 // notify them of linger if it happens as the result of gaining another, 5698 // but if they transition and old network stays up, don't tell them of linger 5699 // or very delayed loss 5700 nai.networkLingered.clear(); 5701 if (VDBG) log("Lingered for " + nai.name() + " cleared"); 5702 } 5703 } 5704 if (keep) { 5705 if (isNewDefault) { 5706 if (VDBG) log("Switching to new default network: " + newNetwork); 5707 setupDataActivityTracking(newNetwork); 5708 try { 5709 mNetd.setDefaultNetId(newNetwork.network.netId); 5710 } catch (Exception e) { 5711 loge("Exception setting default network :" + e); 5712 } 5713 if (newNetwork.equals(mNetworkForRequestId.get(mDefaultRequest.requestId))) { 5714 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 5715 } 5716 synchronized (ConnectivityService.this) { 5717 // have a new default network, release the transition wakelock in 5718 // a second if it's held. The second pause is to allow apps 5719 // to reconnect over the new network 5720 if (mNetTransitionWakeLock.isHeld()) { 5721 mHandler.sendMessageDelayed(mHandler.obtainMessage( 5722 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 5723 mNetTransitionWakeLockSerialNumber, 0), 5724 1000); 5725 } 5726 } 5727 5728 // this will cause us to come up initially as unconnected and switching 5729 // to connected after our normal pause unless somebody reports us as 5730 // really disconnected 5731 mDefaultInetConditionPublished = 0; 5732 mDefaultConnectionSequence++; 5733 mInetConditionChangeInFlight = false; 5734 // TODO - read the tcp buffer size config string from somewhere 5735 // updateNetworkSettings(); 5736 } 5737 // notify battery stats service about this network 5738 try { 5739 BatteryStatsService.getService().noteNetworkInterfaceType( 5740 newNetwork.linkProperties.getInterfaceName(), 5741 newNetwork.networkInfo.getType()); 5742 } catch (RemoteException e) { } 5743 notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); 5744 } else { 5745 if (DBG && newNetwork.networkRequests.size() != 0) { 5746 loge("tearing down network with live requests:"); 5747 for (int i=0; i < newNetwork.networkRequests.size(); i++) { 5748 loge(" " + newNetwork.networkRequests.valueAt(i)); 5749 } 5750 } 5751 if (VDBG) log("Validated network turns out to be unwanted. Tear it down."); 5752 newNetwork.asyncChannel.disconnect(); 5753 } 5754 } 5755 5756 5757 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 5758 NetworkInfo.State state = newInfo.getState(); 5759 NetworkInfo oldInfo = networkAgent.networkInfo; 5760 networkAgent.networkInfo = newInfo; 5761 5762 if (oldInfo != null && oldInfo.getState() == state) { 5763 if (VDBG) log("ignoring duplicate network state non-change"); 5764 return; 5765 } 5766 if (DBG) { 5767 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 5768 (oldInfo == null ? "null" : oldInfo.getState()) + 5769 " to " + state); 5770 } 5771 5772 if (state == NetworkInfo.State.CONNECTED) { 5773 try { 5774 // This is likely caused by the fact that this network already 5775 // exists. An example is when a network goes from CONNECTED to 5776 // CONNECTING and back (like wifi on DHCP renew). 5777 // TODO: keep track of which networks we've created, or ask netd 5778 // to tell us whether we've already created this network or not. 5779 mNetd.createNetwork(networkAgent.network.netId); 5780 } catch (Exception e) { 5781 loge("Error creating network " + networkAgent.network.netId + ": " 5782 + e.getMessage()); 5783 return; 5784 } 5785 5786 updateLinkProperties(networkAgent, null); 5787 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 5788 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 5789 } else if (state == NetworkInfo.State.DISCONNECTED || 5790 state == NetworkInfo.State.SUSPENDED) { 5791 networkAgent.asyncChannel.disconnect(); 5792 } 5793 } 5794 5795 // notify only this one new request of the current state 5796 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 5797 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 5798 // TODO - read state from monitor to decide what to send. 5799// if (nai.networkMonitor.isLingering()) { 5800// notifyType = NetworkCallbacks.LOSING; 5801// } else if (nai.networkMonitor.isEvaluating()) { 5802// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 5803// } 5804 if (nri.request.needsBroadcasts) { 5805 // TODO 5806// sendNetworkBroadcast(nai, notifyType); 5807 } 5808 callCallbackForRequest(nri, nai, notifyType); 5809 } 5810 5811 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 5812 if (VDBG) log("notifyType " + notifyType + " for " + networkAgent.name()); 5813 boolean needsBroadcasts = false; 5814 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 5815 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 5816 NetworkRequestInfo nri = mNetworkRequests.get(nr); 5817 if (VDBG) log(" sending notification for " + nr); 5818 if (nr.needsBroadcasts) needsBroadcasts = true; 5819 callCallbackForRequest(nri, networkAgent, notifyType); 5820 } 5821 if (needsBroadcasts) { 5822 if (notifyType == ConnectivityManager.CALLBACK_AVAILABLE) { 5823 sendConnectedBroadcastDelayed(networkAgent.networkInfo, 5824 getConnectivityChangeDelay()); 5825 } else if (notifyType == ConnectivityManager.CALLBACK_LOST) { 5826 NetworkInfo info = new NetworkInfo(networkAgent.networkInfo); 5827 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 5828 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 5829 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 5830 if (info.isFailover()) { 5831 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 5832 networkAgent.networkInfo.setFailover(false); 5833 } 5834 if (info.getReason() != null) { 5835 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 5836 } 5837 if (info.getExtraInfo() != null) { 5838 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 5839 } 5840 NetworkAgentInfo newDefaultAgent = null; 5841 if (networkAgent.networkRequests.get(mDefaultRequest.requestId) != null) { 5842 newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); 5843 if (newDefaultAgent != null) { 5844 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 5845 newDefaultAgent.networkInfo); 5846 } else { 5847 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 5848 } 5849 } 5850 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 5851 mDefaultInetConditionPublished); 5852 final Intent immediateIntent = new Intent(intent); 5853 immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); 5854 sendStickyBroadcast(immediateIntent); 5855 sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); 5856 if (newDefaultAgent != null) { 5857 sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo, 5858 getConnectivityChangeDelay()); 5859 } 5860 } 5861 } 5862 } 5863 5864 private LinkProperties getLinkPropertiesForTypeInternal(int networkType) { 5865 ArrayList<NetworkAgentInfo> list = mNetworkAgentInfoForType[networkType]; 5866 if (list == null) return null; 5867 try { 5868 return new LinkProperties(list.get(0).linkProperties); 5869 } catch (IndexOutOfBoundsException e) { 5870 return new LinkProperties(); 5871 } 5872 } 5873 5874 private NetworkInfo getNetworkInfoForType(int networkType) { 5875 ArrayList<NetworkAgentInfo> list = mNetworkAgentInfoForType[networkType]; 5876 if (list == null) return null; 5877 try { 5878 return new NetworkInfo(list.get(0).networkInfo); 5879 } catch (IndexOutOfBoundsException e) { 5880 return new NetworkInfo(networkType, 0, "Unknown", ""); 5881 } 5882 } 5883 5884 private NetworkCapabilities getNetworkCapabilitiesForType(int networkType) { 5885 ArrayList<NetworkAgentInfo> list = mNetworkAgentInfoForType[networkType]; 5886 if (list == null) return null; 5887 try { 5888 return new NetworkCapabilities(list.get(0).networkCapabilities); 5889 } catch (IndexOutOfBoundsException e) { 5890 return new NetworkCapabilities(); 5891 } 5892 } 5893} 5894